1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
33 #include "elf/ppc64.h"
34 #include "elf64-ppc.h"
36 static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
38 static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc64_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_vma opd_entry_value
55 (asection
*, bfd_vma
, asection
**, bfd_vma
*);
57 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58 #define TARGET_LITTLE_NAME "elf64-powerpcle"
59 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60 #define TARGET_BIG_NAME "elf64-powerpc"
61 #define ELF_ARCH bfd_arch_powerpc
62 #define ELF_MACHINE_CODE EM_PPC64
63 #define ELF_MAXPAGESIZE 0x10000
64 #define elf_info_to_howto ppc64_elf_info_to_howto
66 #define elf_backend_want_got_sym 0
67 #define elf_backend_want_plt_sym 0
68 #define elf_backend_plt_alignment 3
69 #define elf_backend_plt_not_loaded 1
70 #define elf_backend_got_header_size 8
71 #define elf_backend_can_gc_sections 1
72 #define elf_backend_can_refcount 1
73 #define elf_backend_rela_normal 1
75 #define bfd_elf64_mkobject ppc64_elf_mkobject
76 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
77 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
78 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
79 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
80 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
81 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
83 #define elf_backend_object_p ppc64_elf_object_p
84 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
85 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
86 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
87 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
88 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
89 #define elf_backend_check_directives ppc64_elf_check_directives
90 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
91 #define elf_backend_check_relocs ppc64_elf_check_relocs
92 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
93 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
94 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
95 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
96 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
97 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
98 #define elf_backend_relocate_section ppc64_elf_relocate_section
99 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
100 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
101 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
102 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
103 #define elf_backend_special_sections ppc64_elf_special_sections
105 /* The name of the dynamic interpreter. This is put in the .interp
107 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
109 /* The size in bytes of an entry in the procedure linkage table. */
110 #define PLT_ENTRY_SIZE 24
112 /* The initial size of the plt reserved for the dynamic linker. */
113 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
115 /* TOC base pointers offset from start of TOC. */
116 #define TOC_BASE_OFF 0x8000
118 /* Offset of tp and dtp pointers from start of TLS block. */
119 #define TP_OFFSET 0x7000
120 #define DTP_OFFSET 0x8000
122 /* .plt call stub instructions. The normal stub is like this, but
123 sometimes the .plt entry crosses a 64k boundary and we need to
124 insert an addis to adjust r12. */
125 #define PLT_CALL_STUB_SIZE (7*4)
126 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
127 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
128 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
129 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
130 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
131 /* ld %r11,xxx+16@l(%r12) */
132 #define BCTR 0x4e800420 /* bctr */
135 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
136 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
138 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
140 /* glink call stub instructions. We enter with the index in R0, and the
141 address of glink entry in CTR. From that, we can calculate PLT0. */
142 #define GLINK_CALL_STUB_SIZE (16*4)
143 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
144 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
145 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
146 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
147 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
148 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
149 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
150 /* sub %r12,%r12,%r11 */
151 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
152 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
153 /* ld %r11,xxx@l(%r12) */
154 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
157 /* ld %r11,16(%r12) */
161 #define NOP 0x60000000
163 /* Some other nops. */
164 #define CROR_151515 0x4def7b82
165 #define CROR_313131 0x4ffffb82
167 /* .glink entries for the first 32k functions are two instructions. */
168 #define LI_R0_0 0x38000000 /* li %r0,0 */
169 #define B_DOT 0x48000000 /* b . */
171 /* After that, we need two instructions to load the index, followed by
173 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
174 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
176 /* Instructions used by the save and restore reg functions. */
177 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
178 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
179 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
180 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
181 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
182 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
183 #define LI_R12_0 0x39800000 /* li %r12,0 */
184 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
185 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
186 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
187 #define BLR 0x4e800020 /* blr */
189 /* Since .opd is an array of descriptors and each entry will end up
190 with identical R_PPC64_RELATIVE relocs, there is really no need to
191 propagate .opd relocs; The dynamic linker should be taught to
192 relocate .opd without reloc entries. */
193 #ifndef NO_OPD_RELOCS
194 #define NO_OPD_RELOCS 0
197 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
199 /* Relocation HOWTO's. */
200 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
202 static reloc_howto_type ppc64_elf_howto_raw
[] = {
203 /* This reloc does nothing. */
204 HOWTO (R_PPC64_NONE
, /* type */
206 2, /* size (0 = byte, 1 = short, 2 = long) */
208 FALSE
, /* pc_relative */
210 complain_overflow_dont
, /* complain_on_overflow */
211 bfd_elf_generic_reloc
, /* special_function */
212 "R_PPC64_NONE", /* name */
213 FALSE
, /* partial_inplace */
216 FALSE
), /* pcrel_offset */
218 /* A standard 32 bit relocation. */
219 HOWTO (R_PPC64_ADDR32
, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE
, /* pc_relative */
225 complain_overflow_bitfield
, /* complain_on_overflow */
226 bfd_elf_generic_reloc
, /* special_function */
227 "R_PPC64_ADDR32", /* name */
228 FALSE
, /* partial_inplace */
230 0xffffffff, /* dst_mask */
231 FALSE
), /* pcrel_offset */
233 /* An absolute 26 bit branch; the lower two bits must be zero.
234 FIXME: we don't check that, we just clear them. */
235 HOWTO (R_PPC64_ADDR24
, /* type */
237 2, /* size (0 = byte, 1 = short, 2 = long) */
239 FALSE
, /* pc_relative */
241 complain_overflow_bitfield
, /* complain_on_overflow */
242 bfd_elf_generic_reloc
, /* special_function */
243 "R_PPC64_ADDR24", /* name */
244 FALSE
, /* partial_inplace */
246 0x03fffffc, /* dst_mask */
247 FALSE
), /* pcrel_offset */
249 /* A standard 16 bit relocation. */
250 HOWTO (R_PPC64_ADDR16
, /* type */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
254 FALSE
, /* pc_relative */
256 complain_overflow_bitfield
, /* complain_on_overflow */
257 bfd_elf_generic_reloc
, /* special_function */
258 "R_PPC64_ADDR16", /* name */
259 FALSE
, /* partial_inplace */
261 0xffff, /* dst_mask */
262 FALSE
), /* pcrel_offset */
264 /* A 16 bit relocation without overflow. */
265 HOWTO (R_PPC64_ADDR16_LO
, /* type */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
269 FALSE
, /* pc_relative */
271 complain_overflow_dont
,/* complain_on_overflow */
272 bfd_elf_generic_reloc
, /* special_function */
273 "R_PPC64_ADDR16_LO", /* name */
274 FALSE
, /* partial_inplace */
276 0xffff, /* dst_mask */
277 FALSE
), /* pcrel_offset */
279 /* Bits 16-31 of an address. */
280 HOWTO (R_PPC64_ADDR16_HI
, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE
, /* pc_relative */
286 complain_overflow_dont
, /* complain_on_overflow */
287 bfd_elf_generic_reloc
, /* special_function */
288 "R_PPC64_ADDR16_HI", /* name */
289 FALSE
, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE
), /* pcrel_offset */
294 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
295 bits, treated as a signed number, is negative. */
296 HOWTO (R_PPC64_ADDR16_HA
, /* type */
298 1, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE
, /* pc_relative */
302 complain_overflow_dont
, /* complain_on_overflow */
303 ppc64_elf_ha_reloc
, /* special_function */
304 "R_PPC64_ADDR16_HA", /* name */
305 FALSE
, /* partial_inplace */
307 0xffff, /* dst_mask */
308 FALSE
), /* pcrel_offset */
310 /* An absolute 16 bit branch; the lower two bits must be zero.
311 FIXME: we don't check that, we just clear them. */
312 HOWTO (R_PPC64_ADDR14
, /* type */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
316 FALSE
, /* pc_relative */
318 complain_overflow_bitfield
, /* complain_on_overflow */
319 ppc64_elf_branch_reloc
, /* special_function */
320 "R_PPC64_ADDR14", /* name */
321 FALSE
, /* partial_inplace */
323 0x0000fffc, /* dst_mask */
324 FALSE
), /* pcrel_offset */
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is expected to be taken. The lower two
328 bits must be zero. */
329 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE
, /* pc_relative */
335 complain_overflow_bitfield
, /* complain_on_overflow */
336 ppc64_elf_brtaken_reloc
, /* special_function */
337 "R_PPC64_ADDR14_BRTAKEN",/* name */
338 FALSE
, /* partial_inplace */
340 0x0000fffc, /* dst_mask */
341 FALSE
), /* pcrel_offset */
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is not expected to be taken. The lower
345 two bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE
, /* pc_relative */
352 complain_overflow_bitfield
, /* complain_on_overflow */
353 ppc64_elf_brtaken_reloc
, /* special_function */
354 "R_PPC64_ADDR14_BRNTAKEN",/* name */
355 FALSE
, /* partial_inplace */
357 0x0000fffc, /* dst_mask */
358 FALSE
), /* pcrel_offset */
360 /* A relative 26 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC64_REL24
, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 TRUE
, /* pc_relative */
367 complain_overflow_signed
, /* complain_on_overflow */
368 ppc64_elf_branch_reloc
, /* special_function */
369 "R_PPC64_REL24", /* name */
370 FALSE
, /* partial_inplace */
372 0x03fffffc, /* dst_mask */
373 TRUE
), /* pcrel_offset */
375 /* A relative 16 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL14
, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE
, /* pc_relative */
382 complain_overflow_signed
, /* complain_on_overflow */
383 ppc64_elf_branch_reloc
, /* special_function */
384 "R_PPC64_REL14", /* name */
385 FALSE
, /* partial_inplace */
387 0x0000fffc, /* dst_mask */
388 TRUE
), /* pcrel_offset */
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is expected to be taken. The lower two bits must be
393 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE
, /* pc_relative */
399 complain_overflow_signed
, /* complain_on_overflow */
400 ppc64_elf_brtaken_reloc
, /* special_function */
401 "R_PPC64_REL14_BRTAKEN", /* name */
402 FALSE
, /* partial_inplace */
404 0x0000fffc, /* dst_mask */
405 TRUE
), /* pcrel_offset */
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is not expected to be taken. The lower two bits must
410 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
414 TRUE
, /* pc_relative */
416 complain_overflow_signed
, /* complain_on_overflow */
417 ppc64_elf_brtaken_reloc
, /* special_function */
418 "R_PPC64_REL14_BRNTAKEN",/* name */
419 FALSE
, /* partial_inplace */
421 0x0000fffc, /* dst_mask */
422 TRUE
), /* pcrel_offset */
424 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
426 HOWTO (R_PPC64_GOT16
, /* type */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE
, /* pc_relative */
432 complain_overflow_signed
, /* complain_on_overflow */
433 ppc64_elf_unhandled_reloc
, /* special_function */
434 "R_PPC64_GOT16", /* name */
435 FALSE
, /* partial_inplace */
437 0xffff, /* dst_mask */
438 FALSE
), /* pcrel_offset */
440 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
442 HOWTO (R_PPC64_GOT16_LO
, /* type */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
446 FALSE
, /* pc_relative */
448 complain_overflow_dont
, /* complain_on_overflow */
449 ppc64_elf_unhandled_reloc
, /* special_function */
450 "R_PPC64_GOT16_LO", /* name */
451 FALSE
, /* partial_inplace */
453 0xffff, /* dst_mask */
454 FALSE
), /* pcrel_offset */
456 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
458 HOWTO (R_PPC64_GOT16_HI
, /* type */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE
, /* pc_relative */
464 complain_overflow_dont
,/* complain_on_overflow */
465 ppc64_elf_unhandled_reloc
, /* special_function */
466 "R_PPC64_GOT16_HI", /* name */
467 FALSE
, /* partial_inplace */
469 0xffff, /* dst_mask */
470 FALSE
), /* pcrel_offset */
472 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
474 HOWTO (R_PPC64_GOT16_HA
, /* type */
476 1, /* size (0 = byte, 1 = short, 2 = long) */
478 FALSE
, /* pc_relative */
480 complain_overflow_dont
,/* complain_on_overflow */
481 ppc64_elf_unhandled_reloc
, /* special_function */
482 "R_PPC64_GOT16_HA", /* name */
483 FALSE
, /* partial_inplace */
485 0xffff, /* dst_mask */
486 FALSE
), /* pcrel_offset */
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC64_COPY
, /* type */
495 0, /* this one is variable size */
497 FALSE
, /* pc_relative */
499 complain_overflow_dont
, /* complain_on_overflow */
500 ppc64_elf_unhandled_reloc
, /* special_function */
501 "R_PPC64_COPY", /* name */
502 FALSE
, /* partial_inplace */
505 FALSE
), /* pcrel_offset */
507 /* Like R_PPC64_ADDR64, but used when setting global offset table
509 HOWTO (R_PPC64_GLOB_DAT
, /* type */
511 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
513 FALSE
, /* pc_relative */
515 complain_overflow_dont
, /* complain_on_overflow */
516 ppc64_elf_unhandled_reloc
, /* special_function */
517 "R_PPC64_GLOB_DAT", /* name */
518 FALSE
, /* partial_inplace */
520 ONES (64), /* dst_mask */
521 FALSE
), /* pcrel_offset */
523 /* Created by the link editor. Marks a procedure linkage table
524 entry for a symbol. */
525 HOWTO (R_PPC64_JMP_SLOT
, /* type */
527 0, /* size (0 = byte, 1 = short, 2 = long) */
529 FALSE
, /* pc_relative */
531 complain_overflow_dont
, /* complain_on_overflow */
532 ppc64_elf_unhandled_reloc
, /* special_function */
533 "R_PPC64_JMP_SLOT", /* name */
534 FALSE
, /* partial_inplace */
537 FALSE
), /* pcrel_offset */
539 /* Used only by the dynamic linker. When the object is run, this
540 doubleword64 is set to the load address of the object, plus the
542 HOWTO (R_PPC64_RELATIVE
, /* type */
544 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
546 FALSE
, /* pc_relative */
548 complain_overflow_dont
, /* complain_on_overflow */
549 bfd_elf_generic_reloc
, /* special_function */
550 "R_PPC64_RELATIVE", /* name */
551 FALSE
, /* partial_inplace */
553 ONES (64), /* dst_mask */
554 FALSE
), /* pcrel_offset */
556 /* Like R_PPC64_ADDR32, but may be unaligned. */
557 HOWTO (R_PPC64_UADDR32
, /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 FALSE
, /* pc_relative */
563 complain_overflow_bitfield
, /* complain_on_overflow */
564 bfd_elf_generic_reloc
, /* special_function */
565 "R_PPC64_UADDR32", /* name */
566 FALSE
, /* partial_inplace */
568 0xffffffff, /* dst_mask */
569 FALSE
), /* pcrel_offset */
571 /* Like R_PPC64_ADDR16, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR16
, /* type */
574 1, /* size (0 = byte, 1 = short, 2 = long) */
576 FALSE
, /* pc_relative */
578 complain_overflow_bitfield
, /* complain_on_overflow */
579 bfd_elf_generic_reloc
, /* special_function */
580 "R_PPC64_UADDR16", /* name */
581 FALSE
, /* partial_inplace */
583 0xffff, /* dst_mask */
584 FALSE
), /* pcrel_offset */
586 /* 32-bit PC relative. */
587 HOWTO (R_PPC64_REL32
, /* type */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
591 TRUE
, /* pc_relative */
593 /* FIXME: Verify. Was complain_overflow_bitfield. */
594 complain_overflow_signed
, /* complain_on_overflow */
595 bfd_elf_generic_reloc
, /* special_function */
596 "R_PPC64_REL32", /* name */
597 FALSE
, /* partial_inplace */
599 0xffffffff, /* dst_mask */
600 TRUE
), /* pcrel_offset */
602 /* 32-bit relocation to the symbol's procedure linkage table. */
603 HOWTO (R_PPC64_PLT32
, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 FALSE
, /* pc_relative */
609 complain_overflow_bitfield
, /* complain_on_overflow */
610 ppc64_elf_unhandled_reloc
, /* special_function */
611 "R_PPC64_PLT32", /* name */
612 FALSE
, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 FALSE
), /* pcrel_offset */
617 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
618 FIXME: R_PPC64_PLTREL32 not supported. */
619 HOWTO (R_PPC64_PLTREL32
, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 TRUE
, /* pc_relative */
625 complain_overflow_signed
, /* complain_on_overflow */
626 bfd_elf_generic_reloc
, /* special_function */
627 "R_PPC64_PLTREL32", /* name */
628 FALSE
, /* partial_inplace */
630 0xffffffff, /* dst_mask */
631 TRUE
), /* pcrel_offset */
633 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
635 HOWTO (R_PPC64_PLT16_LO
, /* type */
637 1, /* size (0 = byte, 1 = short, 2 = long) */
639 FALSE
, /* pc_relative */
641 complain_overflow_dont
, /* complain_on_overflow */
642 ppc64_elf_unhandled_reloc
, /* special_function */
643 "R_PPC64_PLT16_LO", /* name */
644 FALSE
, /* partial_inplace */
646 0xffff, /* dst_mask */
647 FALSE
), /* pcrel_offset */
649 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
651 HOWTO (R_PPC64_PLT16_HI
, /* type */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE
, /* pc_relative */
657 complain_overflow_dont
, /* complain_on_overflow */
658 ppc64_elf_unhandled_reloc
, /* special_function */
659 "R_PPC64_PLT16_HI", /* name */
660 FALSE
, /* partial_inplace */
662 0xffff, /* dst_mask */
663 FALSE
), /* pcrel_offset */
665 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
667 HOWTO (R_PPC64_PLT16_HA
, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE
, /* pc_relative */
673 complain_overflow_dont
, /* complain_on_overflow */
674 ppc64_elf_unhandled_reloc
, /* special_function */
675 "R_PPC64_PLT16_HA", /* name */
676 FALSE
, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE
), /* pcrel_offset */
681 /* 16-bit section relative relocation. */
682 HOWTO (R_PPC64_SECTOFF
, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE
, /* pc_relative */
688 complain_overflow_bitfield
, /* complain_on_overflow */
689 ppc64_elf_sectoff_reloc
, /* special_function */
690 "R_PPC64_SECTOFF", /* name */
691 FALSE
, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE
), /* pcrel_offset */
696 /* Like R_PPC64_SECTOFF, but no overflow warning. */
697 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE
, /* pc_relative */
703 complain_overflow_dont
, /* complain_on_overflow */
704 ppc64_elf_sectoff_reloc
, /* special_function */
705 "R_PPC64_SECTOFF_LO", /* name */
706 FALSE
, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE
), /* pcrel_offset */
711 /* 16-bit upper half section relative relocation. */
712 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE
, /* pc_relative */
718 complain_overflow_dont
, /* complain_on_overflow */
719 ppc64_elf_sectoff_reloc
, /* special_function */
720 "R_PPC64_SECTOFF_HI", /* name */
721 FALSE
, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE
), /* pcrel_offset */
726 /* 16-bit upper half adjusted section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE
, /* pc_relative */
733 complain_overflow_dont
, /* complain_on_overflow */
734 ppc64_elf_sectoff_ha_reloc
, /* special_function */
735 "R_PPC64_SECTOFF_HA", /* name */
736 FALSE
, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE
), /* pcrel_offset */
741 /* Like R_PPC64_REL24 without touching the two least significant bits. */
742 HOWTO (R_PPC64_REL30
, /* type */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
746 TRUE
, /* pc_relative */
748 complain_overflow_dont
, /* complain_on_overflow */
749 bfd_elf_generic_reloc
, /* special_function */
750 "R_PPC64_REL30", /* name */
751 FALSE
, /* partial_inplace */
753 0xfffffffc, /* dst_mask */
754 TRUE
), /* pcrel_offset */
756 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
758 /* A standard 64-bit relocation. */
759 HOWTO (R_PPC64_ADDR64
, /* type */
761 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
763 FALSE
, /* pc_relative */
765 complain_overflow_dont
, /* complain_on_overflow */
766 bfd_elf_generic_reloc
, /* special_function */
767 "R_PPC64_ADDR64", /* name */
768 FALSE
, /* partial_inplace */
770 ONES (64), /* dst_mask */
771 FALSE
), /* pcrel_offset */
773 /* The bits 32-47 of an address. */
774 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
776 1, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE
, /* pc_relative */
780 complain_overflow_dont
, /* complain_on_overflow */
781 bfd_elf_generic_reloc
, /* special_function */
782 "R_PPC64_ADDR16_HIGHER", /* name */
783 FALSE
, /* partial_inplace */
785 0xffff, /* dst_mask */
786 FALSE
), /* pcrel_offset */
788 /* The bits 32-47 of an address, plus 1 if the contents of the low
789 16 bits, treated as a signed number, is negative. */
790 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE
, /* pc_relative */
796 complain_overflow_dont
, /* complain_on_overflow */
797 ppc64_elf_ha_reloc
, /* special_function */
798 "R_PPC64_ADDR16_HIGHERA", /* name */
799 FALSE
, /* partial_inplace */
801 0xffff, /* dst_mask */
802 FALSE
), /* pcrel_offset */
804 /* The bits 48-63 of an address. */
805 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE
, /* pc_relative */
811 complain_overflow_dont
, /* complain_on_overflow */
812 bfd_elf_generic_reloc
, /* special_function */
813 "R_PPC64_ADDR16_HIGHEST", /* name */
814 FALSE
, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE
), /* pcrel_offset */
819 /* The bits 48-63 of an address, plus 1 if the contents of the low
820 16 bits, treated as a signed number, is negative. */
821 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
823 1, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE
, /* pc_relative */
827 complain_overflow_dont
, /* complain_on_overflow */
828 ppc64_elf_ha_reloc
, /* special_function */
829 "R_PPC64_ADDR16_HIGHESTA", /* name */
830 FALSE
, /* partial_inplace */
832 0xffff, /* dst_mask */
833 FALSE
), /* pcrel_offset */
835 /* Like ADDR64, but may be unaligned. */
836 HOWTO (R_PPC64_UADDR64
, /* type */
838 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
840 FALSE
, /* pc_relative */
842 complain_overflow_dont
, /* complain_on_overflow */
843 bfd_elf_generic_reloc
, /* special_function */
844 "R_PPC64_UADDR64", /* name */
845 FALSE
, /* partial_inplace */
847 ONES (64), /* dst_mask */
848 FALSE
), /* pcrel_offset */
850 /* 64-bit relative relocation. */
851 HOWTO (R_PPC64_REL64
, /* type */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 TRUE
, /* pc_relative */
857 complain_overflow_dont
, /* complain_on_overflow */
858 bfd_elf_generic_reloc
, /* special_function */
859 "R_PPC64_REL64", /* name */
860 FALSE
, /* partial_inplace */
862 ONES (64), /* dst_mask */
863 TRUE
), /* pcrel_offset */
865 /* 64-bit relocation to the symbol's procedure linkage table. */
866 HOWTO (R_PPC64_PLT64
, /* type */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 FALSE
, /* pc_relative */
872 complain_overflow_dont
, /* complain_on_overflow */
873 ppc64_elf_unhandled_reloc
, /* special_function */
874 "R_PPC64_PLT64", /* name */
875 FALSE
, /* partial_inplace */
877 ONES (64), /* dst_mask */
878 FALSE
), /* pcrel_offset */
880 /* 64-bit PC relative relocation to the symbol's procedure linkage
882 /* FIXME: R_PPC64_PLTREL64 not supported. */
883 HOWTO (R_PPC64_PLTREL64
, /* type */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
887 TRUE
, /* pc_relative */
889 complain_overflow_dont
, /* complain_on_overflow */
890 ppc64_elf_unhandled_reloc
, /* special_function */
891 "R_PPC64_PLTREL64", /* name */
892 FALSE
, /* partial_inplace */
894 ONES (64), /* dst_mask */
895 TRUE
), /* pcrel_offset */
897 /* 16 bit TOC-relative relocation. */
899 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
900 HOWTO (R_PPC64_TOC16
, /* type */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
904 FALSE
, /* pc_relative */
906 complain_overflow_signed
, /* complain_on_overflow */
907 ppc64_elf_toc_reloc
, /* special_function */
908 "R_PPC64_TOC16", /* name */
909 FALSE
, /* partial_inplace */
911 0xffff, /* dst_mask */
912 FALSE
), /* pcrel_offset */
914 /* 16 bit TOC-relative relocation without overflow. */
916 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
917 HOWTO (R_PPC64_TOC16_LO
, /* type */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE
, /* pc_relative */
923 complain_overflow_dont
, /* complain_on_overflow */
924 ppc64_elf_toc_reloc
, /* special_function */
925 "R_PPC64_TOC16_LO", /* name */
926 FALSE
, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE
), /* pcrel_offset */
931 /* 16 bit TOC-relative relocation, high 16 bits. */
933 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_HI
, /* type */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE
, /* pc_relative */
940 complain_overflow_dont
, /* complain_on_overflow */
941 ppc64_elf_toc_reloc
, /* special_function */
942 "R_PPC64_TOC16_HI", /* name */
943 FALSE
, /* partial_inplace */
945 0xffff, /* dst_mask */
946 FALSE
), /* pcrel_offset */
948 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
949 contents of the low 16 bits, treated as a signed number, is
952 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
953 HOWTO (R_PPC64_TOC16_HA
, /* type */
955 1, /* size (0 = byte, 1 = short, 2 = long) */
957 FALSE
, /* pc_relative */
959 complain_overflow_dont
, /* complain_on_overflow */
960 ppc64_elf_toc_ha_reloc
, /* special_function */
961 "R_PPC64_TOC16_HA", /* name */
962 FALSE
, /* partial_inplace */
964 0xffff, /* dst_mask */
965 FALSE
), /* pcrel_offset */
967 /* 64-bit relocation; insert value of TOC base (.TOC.). */
969 /* R_PPC64_TOC 51 doubleword64 .TOC. */
970 HOWTO (R_PPC64_TOC
, /* type */
972 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
974 FALSE
, /* pc_relative */
976 complain_overflow_bitfield
, /* complain_on_overflow */
977 ppc64_elf_toc64_reloc
, /* special_function */
978 "R_PPC64_TOC", /* name */
979 FALSE
, /* partial_inplace */
981 ONES (64), /* dst_mask */
982 FALSE
), /* pcrel_offset */
984 /* Like R_PPC64_GOT16, but also informs the link editor that the
985 value to relocate may (!) refer to a PLT entry which the link
986 editor (a) may replace with the symbol value. If the link editor
987 is unable to fully resolve the symbol, it may (b) create a PLT
988 entry and store the address to the new PLT entry in the GOT.
989 This permits lazy resolution of function symbols at run time.
990 The link editor may also skip all of this and just (c) emit a
991 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
992 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
993 HOWTO (R_PPC64_PLTGOT16
, /* type */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
997 FALSE
, /* pc_relative */
999 complain_overflow_signed
, /* complain_on_overflow */
1000 ppc64_elf_unhandled_reloc
, /* special_function */
1001 "R_PPC64_PLTGOT16", /* name */
1002 FALSE
, /* partial_inplace */
1004 0xffff, /* dst_mask */
1005 FALSE
), /* pcrel_offset */
1007 /* Like R_PPC64_PLTGOT16, but without overflow. */
1008 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1009 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 FALSE
, /* pc_relative */
1015 complain_overflow_dont
, /* complain_on_overflow */
1016 ppc64_elf_unhandled_reloc
, /* special_function */
1017 "R_PPC64_PLTGOT16_LO", /* name */
1018 FALSE
, /* partial_inplace */
1020 0xffff, /* dst_mask */
1021 FALSE
), /* pcrel_offset */
1023 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1024 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1025 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 FALSE
, /* pc_relative */
1031 complain_overflow_dont
, /* complain_on_overflow */
1032 ppc64_elf_unhandled_reloc
, /* special_function */
1033 "R_PPC64_PLTGOT16_HI", /* name */
1034 FALSE
, /* partial_inplace */
1036 0xffff, /* dst_mask */
1037 FALSE
), /* pcrel_offset */
1039 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1040 1 if the contents of the low 16 bits, treated as a signed number,
1042 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1043 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 FALSE
, /* pc_relative */
1049 complain_overflow_dont
,/* complain_on_overflow */
1050 ppc64_elf_unhandled_reloc
, /* special_function */
1051 "R_PPC64_PLTGOT16_HA", /* name */
1052 FALSE
, /* partial_inplace */
1054 0xffff, /* dst_mask */
1055 FALSE
), /* pcrel_offset */
1057 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE
, /* pc_relative */
1064 complain_overflow_bitfield
, /* complain_on_overflow */
1065 bfd_elf_generic_reloc
, /* special_function */
1066 "R_PPC64_ADDR16_DS", /* name */
1067 FALSE
, /* partial_inplace */
1069 0xfffc, /* dst_mask */
1070 FALSE
), /* pcrel_offset */
1072 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE
, /* pc_relative */
1079 complain_overflow_dont
,/* complain_on_overflow */
1080 bfd_elf_generic_reloc
, /* special_function */
1081 "R_PPC64_ADDR16_LO_DS",/* name */
1082 FALSE
, /* partial_inplace */
1084 0xfffc, /* dst_mask */
1085 FALSE
), /* pcrel_offset */
1087 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_GOT16_DS
, /* type */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE
, /* pc_relative */
1094 complain_overflow_signed
, /* complain_on_overflow */
1095 ppc64_elf_unhandled_reloc
, /* special_function */
1096 "R_PPC64_GOT16_DS", /* name */
1097 FALSE
, /* partial_inplace */
1099 0xfffc, /* dst_mask */
1100 FALSE
), /* pcrel_offset */
1102 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE
, /* pc_relative */
1109 complain_overflow_dont
, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc
, /* special_function */
1111 "R_PPC64_GOT16_LO_DS", /* name */
1112 FALSE
, /* partial_inplace */
1114 0xfffc, /* dst_mask */
1115 FALSE
), /* pcrel_offset */
1117 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE
, /* pc_relative */
1124 complain_overflow_dont
, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc
, /* special_function */
1126 "R_PPC64_PLT16_LO_DS", /* name */
1127 FALSE
, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 FALSE
), /* pcrel_offset */
1132 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE
, /* pc_relative */
1139 complain_overflow_bitfield
, /* complain_on_overflow */
1140 ppc64_elf_sectoff_reloc
, /* special_function */
1141 "R_PPC64_SECTOFF_DS", /* name */
1142 FALSE
, /* partial_inplace */
1144 0xfffc, /* dst_mask */
1145 FALSE
), /* pcrel_offset */
1147 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE
, /* pc_relative */
1154 complain_overflow_dont
, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc
, /* special_function */
1156 "R_PPC64_SECTOFF_LO_DS",/* name */
1157 FALSE
, /* partial_inplace */
1159 0xfffc, /* dst_mask */
1160 FALSE
), /* pcrel_offset */
1162 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_TOC16_DS
, /* type */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE
, /* pc_relative */
1169 complain_overflow_signed
, /* complain_on_overflow */
1170 ppc64_elf_toc_reloc
, /* special_function */
1171 "R_PPC64_TOC16_DS", /* name */
1172 FALSE
, /* partial_inplace */
1174 0xfffc, /* dst_mask */
1175 FALSE
), /* pcrel_offset */
1177 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE
, /* pc_relative */
1184 complain_overflow_dont
, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc
, /* special_function */
1186 "R_PPC64_TOC16_LO_DS", /* name */
1187 FALSE
, /* partial_inplace */
1189 0xfffc, /* dst_mask */
1190 FALSE
), /* pcrel_offset */
1192 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1193 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1194 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 FALSE
, /* pc_relative */
1200 complain_overflow_signed
, /* complain_on_overflow */
1201 ppc64_elf_unhandled_reloc
, /* special_function */
1202 "R_PPC64_PLTGOT16_DS", /* name */
1203 FALSE
, /* partial_inplace */
1205 0xfffc, /* dst_mask */
1206 FALSE
), /* pcrel_offset */
1208 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1209 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1210 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1214 FALSE
, /* pc_relative */
1216 complain_overflow_dont
, /* complain_on_overflow */
1217 ppc64_elf_unhandled_reloc
, /* special_function */
1218 "R_PPC64_PLTGOT16_LO_DS",/* name */
1219 FALSE
, /* partial_inplace */
1221 0xfffc, /* dst_mask */
1222 FALSE
), /* pcrel_offset */
1224 /* Marker reloc for TLS. */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 FALSE
, /* pc_relative */
1231 complain_overflow_dont
, /* complain_on_overflow */
1232 bfd_elf_generic_reloc
, /* special_function */
1233 "R_PPC64_TLS", /* name */
1234 FALSE
, /* partial_inplace */
1237 FALSE
), /* pcrel_offset */
1239 /* Computes the load module index of the load module that contains the
1240 definition of its TLS sym. */
1241 HOWTO (R_PPC64_DTPMOD64
,
1243 4, /* size (0 = byte, 1 = short, 2 = long) */
1245 FALSE
, /* pc_relative */
1247 complain_overflow_dont
, /* complain_on_overflow */
1248 ppc64_elf_unhandled_reloc
, /* special_function */
1249 "R_PPC64_DTPMOD64", /* name */
1250 FALSE
, /* partial_inplace */
1252 ONES (64), /* dst_mask */
1253 FALSE
), /* pcrel_offset */
1255 /* Computes a dtv-relative displacement, the difference between the value
1256 of sym+add and the base address of the thread-local storage block that
1257 contains the definition of sym, minus 0x8000. */
1258 HOWTO (R_PPC64_DTPREL64
,
1260 4, /* size (0 = byte, 1 = short, 2 = long) */
1262 FALSE
, /* pc_relative */
1264 complain_overflow_dont
, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc
, /* special_function */
1266 "R_PPC64_DTPREL64", /* name */
1267 FALSE
, /* partial_inplace */
1269 ONES (64), /* dst_mask */
1270 FALSE
), /* pcrel_offset */
1272 /* A 16 bit dtprel reloc. */
1273 HOWTO (R_PPC64_DTPREL16
,
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 FALSE
, /* pc_relative */
1279 complain_overflow_signed
, /* complain_on_overflow */
1280 ppc64_elf_unhandled_reloc
, /* special_function */
1281 "R_PPC64_DTPREL16", /* name */
1282 FALSE
, /* partial_inplace */
1284 0xffff, /* dst_mask */
1285 FALSE
), /* pcrel_offset */
1287 /* Like DTPREL16, but no overflow. */
1288 HOWTO (R_PPC64_DTPREL16_LO
,
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 FALSE
, /* pc_relative */
1294 complain_overflow_dont
, /* complain_on_overflow */
1295 ppc64_elf_unhandled_reloc
, /* special_function */
1296 "R_PPC64_DTPREL16_LO", /* name */
1297 FALSE
, /* partial_inplace */
1299 0xffff, /* dst_mask */
1300 FALSE
), /* pcrel_offset */
1302 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1303 HOWTO (R_PPC64_DTPREL16_HI
,
1304 16, /* rightshift */
1305 1, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE
, /* pc_relative */
1309 complain_overflow_dont
, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc
, /* special_function */
1311 "R_PPC64_DTPREL16_HI", /* name */
1312 FALSE
, /* partial_inplace */
1314 0xffff, /* dst_mask */
1315 FALSE
), /* pcrel_offset */
1317 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1318 HOWTO (R_PPC64_DTPREL16_HA
,
1319 16, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE
, /* pc_relative */
1324 complain_overflow_dont
, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc
, /* special_function */
1326 "R_PPC64_DTPREL16_HA", /* name */
1327 FALSE
, /* partial_inplace */
1329 0xffff, /* dst_mask */
1330 FALSE
), /* pcrel_offset */
1332 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1333 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1334 32, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 FALSE
, /* pc_relative */
1339 complain_overflow_dont
, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc
, /* special_function */
1341 "R_PPC64_DTPREL16_HIGHER", /* name */
1342 FALSE
, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE
), /* pcrel_offset */
1347 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1349 32, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE
, /* pc_relative */
1354 complain_overflow_dont
, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc
, /* special_function */
1356 "R_PPC64_DTPREL16_HIGHERA", /* name */
1357 FALSE
, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE
), /* pcrel_offset */
1362 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1364 48, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE
, /* pc_relative */
1369 complain_overflow_dont
, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc
, /* special_function */
1371 "R_PPC64_DTPREL16_HIGHEST", /* name */
1372 FALSE
, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE
), /* pcrel_offset */
1377 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1379 48, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 FALSE
, /* pc_relative */
1384 complain_overflow_dont
, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc
, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1387 FALSE
, /* partial_inplace */
1389 0xffff, /* dst_mask */
1390 FALSE
), /* pcrel_offset */
1392 /* Like DTPREL16, but for insns with a DS field. */
1393 HOWTO (R_PPC64_DTPREL16_DS
,
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE
, /* pc_relative */
1399 complain_overflow_signed
, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc
, /* special_function */
1401 "R_PPC64_DTPREL16_DS", /* name */
1402 FALSE
, /* partial_inplace */
1404 0xfffc, /* dst_mask */
1405 FALSE
), /* pcrel_offset */
1407 /* Like DTPREL16_DS, but no overflow. */
1408 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 FALSE
, /* pc_relative */
1414 complain_overflow_dont
, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc
, /* special_function */
1416 "R_PPC64_DTPREL16_LO_DS", /* name */
1417 FALSE
, /* partial_inplace */
1419 0xfffc, /* dst_mask */
1420 FALSE
), /* pcrel_offset */
1422 /* Computes a tp-relative displacement, the difference between the value of
1423 sym+add and the value of the thread pointer (r13). */
1424 HOWTO (R_PPC64_TPREL64
,
1426 4, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE
, /* pc_relative */
1430 complain_overflow_dont
, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc
, /* special_function */
1432 "R_PPC64_TPREL64", /* name */
1433 FALSE
, /* partial_inplace */
1435 ONES (64), /* dst_mask */
1436 FALSE
), /* pcrel_offset */
1438 /* A 16 bit tprel reloc. */
1439 HOWTO (R_PPC64_TPREL16
,
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 FALSE
, /* pc_relative */
1445 complain_overflow_signed
, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc
, /* special_function */
1447 "R_PPC64_TPREL16", /* name */
1448 FALSE
, /* partial_inplace */
1450 0xffff, /* dst_mask */
1451 FALSE
), /* pcrel_offset */
1453 /* Like TPREL16, but no overflow. */
1454 HOWTO (R_PPC64_TPREL16_LO
,
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 FALSE
, /* pc_relative */
1460 complain_overflow_dont
, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc
, /* special_function */
1462 "R_PPC64_TPREL16_LO", /* name */
1463 FALSE
, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 FALSE
), /* pcrel_offset */
1468 /* Like TPREL16_LO, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_TPREL16_HI
,
1470 16, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE
, /* pc_relative */
1475 complain_overflow_dont
, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc
, /* special_function */
1477 "R_PPC64_TPREL16_HI", /* name */
1478 FALSE
, /* partial_inplace */
1480 0xffff, /* dst_mask */
1481 FALSE
), /* pcrel_offset */
1483 /* Like TPREL16_HI, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_TPREL16_HA
,
1485 16, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE
, /* pc_relative */
1490 complain_overflow_dont
, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc
, /* special_function */
1492 "R_PPC64_TPREL16_HA", /* name */
1493 FALSE
, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE
), /* pcrel_offset */
1498 /* Like TPREL16_HI, but next higher group of 16 bits. */
1499 HOWTO (R_PPC64_TPREL16_HIGHER
,
1500 32, /* rightshift */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE
, /* pc_relative */
1505 complain_overflow_dont
, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc
, /* special_function */
1507 "R_PPC64_TPREL16_HIGHER", /* name */
1508 FALSE
, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE
), /* pcrel_offset */
1513 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1515 32, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_dont
, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc
, /* special_function */
1522 "R_PPC64_TPREL16_HIGHERA", /* name */
1523 FALSE
, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1530 48, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 FALSE
, /* pc_relative */
1535 complain_overflow_dont
, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc
, /* special_function */
1537 "R_PPC64_TPREL16_HIGHEST", /* name */
1538 FALSE
, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE
), /* pcrel_offset */
1543 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1545 48, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 FALSE
, /* pc_relative */
1550 complain_overflow_dont
, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc
, /* special_function */
1552 "R_PPC64_TPREL16_HIGHESTA", /* name */
1553 FALSE
, /* partial_inplace */
1555 0xffff, /* dst_mask */
1556 FALSE
), /* pcrel_offset */
1558 /* Like TPREL16, but for insns with a DS field. */
1559 HOWTO (R_PPC64_TPREL16_DS
,
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE
, /* pc_relative */
1565 complain_overflow_signed
, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc
, /* special_function */
1567 "R_PPC64_TPREL16_DS", /* name */
1568 FALSE
, /* partial_inplace */
1570 0xfffc, /* dst_mask */
1571 FALSE
), /* pcrel_offset */
1573 /* Like TPREL16_DS, but no overflow. */
1574 HOWTO (R_PPC64_TPREL16_LO_DS
,
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE
, /* pc_relative */
1580 complain_overflow_dont
, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc
, /* special_function */
1582 "R_PPC64_TPREL16_LO_DS", /* name */
1583 FALSE
, /* partial_inplace */
1585 0xfffc, /* dst_mask */
1586 FALSE
), /* pcrel_offset */
1588 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1589 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1590 to the first entry relative to the TOC base (r2). */
1591 HOWTO (R_PPC64_GOT_TLSGD16
,
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1595 FALSE
, /* pc_relative */
1597 complain_overflow_signed
, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc
, /* special_function */
1599 "R_PPC64_GOT_TLSGD16", /* name */
1600 FALSE
, /* partial_inplace */
1602 0xffff, /* dst_mask */
1603 FALSE
), /* pcrel_offset */
1605 /* Like GOT_TLSGD16, but no overflow. */
1606 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1608 1, /* size (0 = byte, 1 = short, 2 = long) */
1610 FALSE
, /* pc_relative */
1612 complain_overflow_dont
, /* complain_on_overflow */
1613 ppc64_elf_unhandled_reloc
, /* special_function */
1614 "R_PPC64_GOT_TLSGD16_LO", /* name */
1615 FALSE
, /* partial_inplace */
1617 0xffff, /* dst_mask */
1618 FALSE
), /* pcrel_offset */
1620 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1621 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1622 16, /* rightshift */
1623 1, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE
, /* pc_relative */
1627 complain_overflow_dont
, /* complain_on_overflow */
1628 ppc64_elf_unhandled_reloc
, /* special_function */
1629 "R_PPC64_GOT_TLSGD16_HI", /* name */
1630 FALSE
, /* partial_inplace */
1632 0xffff, /* dst_mask */
1633 FALSE
), /* pcrel_offset */
1635 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1636 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1637 16, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE
, /* pc_relative */
1642 complain_overflow_dont
, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc
, /* special_function */
1644 "R_PPC64_GOT_TLSGD16_HA", /* name */
1645 FALSE
, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE
), /* pcrel_offset */
1650 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1651 with values (sym+add)@dtpmod and zero, and computes the offset to the
1652 first entry relative to the TOC base (r2). */
1653 HOWTO (R_PPC64_GOT_TLSLD16
,
1655 1, /* size (0 = byte, 1 = short, 2 = long) */
1657 FALSE
, /* pc_relative */
1659 complain_overflow_signed
, /* complain_on_overflow */
1660 ppc64_elf_unhandled_reloc
, /* special_function */
1661 "R_PPC64_GOT_TLSLD16", /* name */
1662 FALSE
, /* partial_inplace */
1664 0xffff, /* dst_mask */
1665 FALSE
), /* pcrel_offset */
1667 /* Like GOT_TLSLD16, but no overflow. */
1668 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1670 1, /* size (0 = byte, 1 = short, 2 = long) */
1672 FALSE
, /* pc_relative */
1674 complain_overflow_dont
, /* complain_on_overflow */
1675 ppc64_elf_unhandled_reloc
, /* special_function */
1676 "R_PPC64_GOT_TLSLD16_LO", /* name */
1677 FALSE
, /* partial_inplace */
1679 0xffff, /* dst_mask */
1680 FALSE
), /* pcrel_offset */
1682 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1683 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1684 16, /* rightshift */
1685 1, /* size (0 = byte, 1 = short, 2 = long) */
1687 FALSE
, /* pc_relative */
1689 complain_overflow_dont
, /* complain_on_overflow */
1690 ppc64_elf_unhandled_reloc
, /* special_function */
1691 "R_PPC64_GOT_TLSLD16_HI", /* name */
1692 FALSE
, /* partial_inplace */
1694 0xffff, /* dst_mask */
1695 FALSE
), /* pcrel_offset */
1697 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1698 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1699 16, /* rightshift */
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE
, /* pc_relative */
1704 complain_overflow_dont
, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc
, /* special_function */
1706 "R_PPC64_GOT_TLSLD16_HA", /* name */
1707 FALSE
, /* partial_inplace */
1709 0xffff, /* dst_mask */
1710 FALSE
), /* pcrel_offset */
1712 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1713 the offset to the entry relative to the TOC base (r2). */
1714 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1716 1, /* size (0 = byte, 1 = short, 2 = long) */
1718 FALSE
, /* pc_relative */
1720 complain_overflow_signed
, /* complain_on_overflow */
1721 ppc64_elf_unhandled_reloc
, /* special_function */
1722 "R_PPC64_GOT_DTPREL16_DS", /* name */
1723 FALSE
, /* partial_inplace */
1725 0xfffc, /* dst_mask */
1726 FALSE
), /* pcrel_offset */
1728 /* Like GOT_DTPREL16_DS, but no overflow. */
1729 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1731 1, /* size (0 = byte, 1 = short, 2 = long) */
1733 FALSE
, /* pc_relative */
1735 complain_overflow_dont
, /* complain_on_overflow */
1736 ppc64_elf_unhandled_reloc
, /* special_function */
1737 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1738 FALSE
, /* partial_inplace */
1740 0xfffc, /* dst_mask */
1741 FALSE
), /* pcrel_offset */
1743 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1744 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1745 16, /* rightshift */
1746 1, /* size (0 = byte, 1 = short, 2 = long) */
1748 FALSE
, /* pc_relative */
1750 complain_overflow_dont
, /* complain_on_overflow */
1751 ppc64_elf_unhandled_reloc
, /* special_function */
1752 "R_PPC64_GOT_DTPREL16_HI", /* name */
1753 FALSE
, /* partial_inplace */
1755 0xffff, /* dst_mask */
1756 FALSE
), /* pcrel_offset */
1758 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1759 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1760 16, /* rightshift */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE
, /* pc_relative */
1765 complain_overflow_dont
, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc
, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_HA", /* name */
1768 FALSE
, /* partial_inplace */
1770 0xffff, /* dst_mask */
1771 FALSE
), /* pcrel_offset */
1773 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1774 offset to the entry relative to the TOC base (r2). */
1775 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1779 FALSE
, /* pc_relative */
1781 complain_overflow_signed
, /* complain_on_overflow */
1782 ppc64_elf_unhandled_reloc
, /* special_function */
1783 "R_PPC64_GOT_TPREL16_DS", /* name */
1784 FALSE
, /* partial_inplace */
1786 0xfffc, /* dst_mask */
1787 FALSE
), /* pcrel_offset */
1789 /* Like GOT_TPREL16_DS, but no overflow. */
1790 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1792 1, /* size (0 = byte, 1 = short, 2 = long) */
1794 FALSE
, /* pc_relative */
1796 complain_overflow_dont
, /* complain_on_overflow */
1797 ppc64_elf_unhandled_reloc
, /* special_function */
1798 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1799 FALSE
, /* partial_inplace */
1801 0xfffc, /* dst_mask */
1802 FALSE
), /* pcrel_offset */
1804 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1805 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1806 16, /* rightshift */
1807 1, /* size (0 = byte, 1 = short, 2 = long) */
1809 FALSE
, /* pc_relative */
1811 complain_overflow_dont
, /* complain_on_overflow */
1812 ppc64_elf_unhandled_reloc
, /* special_function */
1813 "R_PPC64_GOT_TPREL16_HI", /* name */
1814 FALSE
, /* partial_inplace */
1816 0xffff, /* dst_mask */
1817 FALSE
), /* pcrel_offset */
1819 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1820 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1821 16, /* rightshift */
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE
, /* pc_relative */
1826 complain_overflow_dont
, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc
, /* special_function */
1828 "R_PPC64_GOT_TPREL16_HA", /* name */
1829 FALSE
, /* partial_inplace */
1831 0xffff, /* dst_mask */
1832 FALSE
), /* pcrel_offset */
1834 /* GNU extension to record C++ vtable hierarchy. */
1835 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1837 0, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE
, /* pc_relative */
1841 complain_overflow_dont
, /* complain_on_overflow */
1842 NULL
, /* special_function */
1843 "R_PPC64_GNU_VTINHERIT", /* name */
1844 FALSE
, /* partial_inplace */
1847 FALSE
), /* pcrel_offset */
1849 /* GNU extension to record C++ vtable member usage. */
1850 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1852 0, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE
, /* pc_relative */
1856 complain_overflow_dont
, /* complain_on_overflow */
1857 NULL
, /* special_function */
1858 "R_PPC64_GNU_VTENTRY", /* name */
1859 FALSE
, /* partial_inplace */
1862 FALSE
), /* pcrel_offset */
1866 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1870 ppc_howto_init (void)
1872 unsigned int i
, type
;
1875 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
1878 type
= ppc64_elf_howto_raw
[i
].type
;
1879 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
1880 / sizeof (ppc64_elf_howto_table
[0])));
1881 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
1885 static reloc_howto_type
*
1886 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1887 bfd_reloc_code_real_type code
)
1889 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
1891 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
1892 /* Initialize howto table if needed. */
1900 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
1902 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
1904 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
1906 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
1908 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
1910 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
1912 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
1914 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
1916 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
1918 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
1920 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
1922 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
1924 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
1926 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
1928 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
1930 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
1932 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
1934 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
1936 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
1938 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
1940 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
1942 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
1944 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
1946 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
1948 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
1950 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
1952 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
1954 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
1956 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
1958 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
1960 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
1962 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
1964 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
1966 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
1968 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
1970 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
1972 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
1974 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
1976 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
1978 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
1980 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
1982 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
1984 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
1986 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
1988 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
1990 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
1992 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
1994 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
1996 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
1998 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2000 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2002 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2004 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2006 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2008 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2010 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2012 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2014 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2016 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2018 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2020 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2022 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2024 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2026 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2028 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2030 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2032 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2034 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2036 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2038 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2040 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2042 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2044 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2046 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2048 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2050 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2052 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2054 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2056 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2058 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2060 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2062 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2064 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2066 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2068 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2070 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2072 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2074 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2076 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2078 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2080 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2082 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2084 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2086 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2088 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2090 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2092 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2094 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2096 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2098 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2100 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2104 return ppc64_elf_howto_table
[r
];
2107 /* Set the howto pointer for a PowerPC ELF reloc. */
2110 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2111 Elf_Internal_Rela
*dst
)
2115 /* Initialize howto table if needed. */
2116 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2119 type
= ELF64_R_TYPE (dst
->r_info
);
2120 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2121 / sizeof (ppc64_elf_howto_table
[0])));
2122 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2125 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2127 static bfd_reloc_status_type
2128 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2129 void *data
, asection
*input_section
,
2130 bfd
*output_bfd
, char **error_message
)
2132 /* If this is a relocatable link (output_bfd test tells us), just
2133 call the generic function. Any adjustment will be done at final
2135 if (output_bfd
!= NULL
)
2136 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2137 input_section
, output_bfd
, error_message
);
2139 /* Adjust the addend for sign extension of the low 16 bits.
2140 We won't actually be using the low 16 bits, so trashing them
2142 reloc_entry
->addend
+= 0x8000;
2143 return bfd_reloc_continue
;
2146 static bfd_reloc_status_type
2147 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2148 void *data
, asection
*input_section
,
2149 bfd
*output_bfd
, char **error_message
)
2151 if (output_bfd
!= NULL
)
2152 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2153 input_section
, output_bfd
, error_message
);
2155 if (strcmp (symbol
->section
->name
, ".opd") == 0
2156 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2158 bfd_vma dest
= opd_entry_value (symbol
->section
,
2159 symbol
->value
+ reloc_entry
->addend
,
2161 if (dest
!= (bfd_vma
) -1)
2162 reloc_entry
->addend
= dest
- (symbol
->value
2163 + symbol
->section
->output_section
->vma
2164 + symbol
->section
->output_offset
);
2166 return bfd_reloc_continue
;
2169 static bfd_reloc_status_type
2170 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2171 void *data
, asection
*input_section
,
2172 bfd
*output_bfd
, char **error_message
)
2175 enum elf_ppc64_reloc_type r_type
;
2176 bfd_size_type octets
;
2177 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2178 bfd_boolean is_power4
= FALSE
;
2180 /* If this is a relocatable link (output_bfd test tells us), just
2181 call the generic function. Any adjustment will be done at final
2183 if (output_bfd
!= NULL
)
2184 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2185 input_section
, output_bfd
, error_message
);
2187 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2188 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2189 insn
&= ~(0x01 << 21);
2190 r_type
= reloc_entry
->howto
->type
;
2191 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2192 || r_type
== R_PPC64_REL14_BRTAKEN
)
2193 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2197 /* Set 'a' bit. This is 0b00010 in BO field for branch
2198 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2199 for branch on CTR insns (BO == 1a00t or 1a01t). */
2200 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2202 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2212 if (!bfd_is_com_section (symbol
->section
))
2213 target
= symbol
->value
;
2214 target
+= symbol
->section
->output_section
->vma
;
2215 target
+= symbol
->section
->output_offset
;
2216 target
+= reloc_entry
->addend
;
2218 from
= (reloc_entry
->address
2219 + input_section
->output_offset
2220 + input_section
->output_section
->vma
);
2222 /* Invert 'y' bit if not the default. */
2223 if ((bfd_signed_vma
) (target
- from
) < 0)
2226 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2228 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2229 input_section
, output_bfd
, error_message
);
2232 static bfd_reloc_status_type
2233 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2234 void *data
, asection
*input_section
,
2235 bfd
*output_bfd
, char **error_message
)
2237 /* If this is a relocatable link (output_bfd test tells us), just
2238 call the generic function. Any adjustment will be done at final
2240 if (output_bfd
!= NULL
)
2241 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2242 input_section
, output_bfd
, error_message
);
2244 /* Subtract the symbol section base address. */
2245 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2246 return bfd_reloc_continue
;
2249 static bfd_reloc_status_type
2250 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2251 void *data
, asection
*input_section
,
2252 bfd
*output_bfd
, char **error_message
)
2254 /* If this is a relocatable link (output_bfd test tells us), just
2255 call the generic function. Any adjustment will be done at final
2257 if (output_bfd
!= NULL
)
2258 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2259 input_section
, output_bfd
, error_message
);
2261 /* Subtract the symbol section base address. */
2262 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2264 /* Adjust the addend for sign extension of the low 16 bits. */
2265 reloc_entry
->addend
+= 0x8000;
2266 return bfd_reloc_continue
;
2269 static bfd_reloc_status_type
2270 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2271 void *data
, asection
*input_section
,
2272 bfd
*output_bfd
, char **error_message
)
2276 /* If this is a relocatable link (output_bfd test tells us), just
2277 call the generic function. Any adjustment will be done at final
2279 if (output_bfd
!= NULL
)
2280 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2281 input_section
, output_bfd
, error_message
);
2283 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2285 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2287 /* Subtract the TOC base address. */
2288 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2289 return bfd_reloc_continue
;
2292 static bfd_reloc_status_type
2293 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2294 void *data
, asection
*input_section
,
2295 bfd
*output_bfd
, char **error_message
)
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2302 if (output_bfd
!= NULL
)
2303 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2304 input_section
, output_bfd
, error_message
);
2306 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2308 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2310 /* Subtract the TOC base address. */
2311 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2313 /* Adjust the addend for sign extension of the low 16 bits. */
2314 reloc_entry
->addend
+= 0x8000;
2315 return bfd_reloc_continue
;
2318 static bfd_reloc_status_type
2319 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2320 void *data
, asection
*input_section
,
2321 bfd
*output_bfd
, char **error_message
)
2324 bfd_size_type octets
;
2326 /* If this is a relocatable link (output_bfd test tells us), just
2327 call the generic function. Any adjustment will be done at final
2329 if (output_bfd
!= NULL
)
2330 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2331 input_section
, output_bfd
, error_message
);
2333 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2335 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2337 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2338 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2339 return bfd_reloc_ok
;
2342 static bfd_reloc_status_type
2343 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2344 void *data
, asection
*input_section
,
2345 bfd
*output_bfd
, char **error_message
)
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2350 if (output_bfd
!= NULL
)
2351 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2352 input_section
, output_bfd
, error_message
);
2354 if (error_message
!= NULL
)
2356 static char buf
[60];
2357 sprintf (buf
, "generic linker can't handle %s",
2358 reloc_entry
->howto
->name
);
2359 *error_message
= buf
;
2361 return bfd_reloc_dangerous
;
2364 struct ppc64_elf_obj_tdata
2366 struct elf_obj_tdata elf
;
2368 /* Shortcuts to dynamic linker sections. */
2373 /* Used during garbage collection. We attach global symbols defined
2374 on removed .opd entries to this section so that the sym is removed. */
2375 asection
*deleted_section
;
2377 /* Used when adding symbols. */
2378 bfd_boolean has_dotsym
;
2381 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2382 sections means we potentially need one of these for each input bfd. */
2384 bfd_signed_vma refcount
;
2388 /* A copy of relocs before they are modified for --emit-relocs. */
2389 Elf_Internal_Rela
*opd_relocs
;
2392 #define ppc64_elf_tdata(bfd) \
2393 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2395 #define ppc64_tlsld_got(bfd) \
2396 (&ppc64_elf_tdata (bfd)->tlsld_got)
2398 /* Override the generic function because we store some extras. */
2401 ppc64_elf_mkobject (bfd
*abfd
)
2403 bfd_size_type amt
= sizeof (struct ppc64_elf_obj_tdata
);
2404 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2405 if (abfd
->tdata
.any
== NULL
)
2410 /* Return 1 if target is one of ours. */
2413 is_ppc64_elf_target (const struct bfd_target
*targ
)
2415 extern const bfd_target bfd_elf64_powerpc_vec
;
2416 extern const bfd_target bfd_elf64_powerpcle_vec
;
2418 return targ
== &bfd_elf64_powerpc_vec
|| targ
== &bfd_elf64_powerpcle_vec
;
2421 /* Fix bad default arch selected for a 64 bit input bfd when the
2422 default is 32 bit. */
2425 ppc64_elf_object_p (bfd
*abfd
)
2427 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2429 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2431 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2433 /* Relies on arch after 32 bit default being 64 bit default. */
2434 abfd
->arch_info
= abfd
->arch_info
->next
;
2435 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2441 /* Support for core dump NOTE sections. */
2444 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2446 size_t offset
, size
;
2448 if (note
->descsz
!= 504)
2452 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2455 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2461 /* Make a ".reg/999" section. */
2462 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2463 size
, note
->descpos
+ offset
);
2467 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2469 if (note
->descsz
!= 136)
2472 elf_tdata (abfd
)->core_program
2473 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2474 elf_tdata (abfd
)->core_command
2475 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2480 /* Merge backend specific data from an object file to the output
2481 object file when linking. */
2484 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2486 /* Check if we have the same endianess. */
2487 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2488 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2489 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2493 if (bfd_big_endian (ibfd
))
2494 msg
= _("%B: compiled for a big endian system "
2495 "and target is little endian");
2497 msg
= _("%B: compiled for a little endian system "
2498 "and target is big endian");
2500 (*_bfd_error_handler
) (msg
, ibfd
);
2502 bfd_set_error (bfd_error_wrong_format
);
2509 /* Add extra PPC sections. */
2511 static struct bfd_elf_special_section
const
2512 ppc64_special_sections_p
[]=
2514 { ".plt", 4, 0, SHT_NOBITS
, 0 },
2515 { NULL
, 0, 0, 0, 0 }
2518 static struct bfd_elf_special_section
const
2519 ppc64_special_sections_s
[]=
2521 { ".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2522 { ".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2523 { NULL
, 0, 0, 0, 0 }
2526 static struct bfd_elf_special_section
const
2527 ppc64_special_sections_t
[]=
2529 { ".toc", 4, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2530 { ".toc1", 5, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2531 { ".tocbss", 7, 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2532 { NULL
, 0, 0, 0, 0 }
2535 static struct bfd_elf_special_section
const *
2536 ppc64_elf_special_sections
[27]=
2553 ppc64_special_sections_p
, /* 'p' */
2556 ppc64_special_sections_s
, /* 's' */
2557 ppc64_special_sections_t
, /* 't' */
2567 struct _ppc64_elf_section_data
2569 struct bfd_elf_section_data elf
;
2571 /* An array with one entry for each opd function descriptor. */
2574 /* Points to the function code section for local opd entries. */
2575 asection
**func_sec
;
2576 /* After editing .opd, adjust references to opd local syms. */
2580 /* An array for toc sections, indexed by offset/8.
2581 Specifies the relocation symbol index used at a given toc offset. */
2585 #define ppc64_elf_section_data(sec) \
2586 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2589 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2591 struct _ppc64_elf_section_data
*sdata
;
2592 bfd_size_type amt
= sizeof (*sdata
);
2594 sdata
= bfd_zalloc (abfd
, amt
);
2597 sec
->used_by_bfd
= sdata
;
2599 return _bfd_elf_new_section_hook (abfd
, sec
);
2603 get_opd_info (asection
* sec
)
2606 && ppc64_elf_section_data (sec
) != NULL
2607 && ppc64_elf_section_data (sec
)->opd
.adjust
!= NULL
)
2608 return ppc64_elf_section_data (sec
)->opd
.adjust
;
2612 /* Parameters for the qsort hook. */
2613 static asection
*synthetic_opd
;
2614 static bfd_boolean synthetic_relocatable
;
2616 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2619 compare_symbols (const void *ap
, const void *bp
)
2621 const asymbol
*a
= * (const asymbol
**) ap
;
2622 const asymbol
*b
= * (const asymbol
**) bp
;
2624 /* Section symbols first. */
2625 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2627 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2630 /* then .opd symbols. */
2631 if (a
->section
== synthetic_opd
&& b
->section
!= synthetic_opd
)
2633 if (a
->section
!= synthetic_opd
&& b
->section
== synthetic_opd
)
2636 /* then other code symbols. */
2637 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2638 == (SEC_CODE
| SEC_ALLOC
)
2639 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2640 != (SEC_CODE
| SEC_ALLOC
))
2643 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2644 != (SEC_CODE
| SEC_ALLOC
)
2645 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2646 == (SEC_CODE
| SEC_ALLOC
))
2649 if (synthetic_relocatable
)
2651 if (a
->section
->id
< b
->section
->id
)
2654 if (a
->section
->id
> b
->section
->id
)
2658 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2661 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2667 /* Search SYMS for a symbol of the given VALUE. */
2670 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2678 mid
= (lo
+ hi
) >> 1;
2679 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2681 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2691 mid
= (lo
+ hi
) >> 1;
2692 if (syms
[mid
]->section
->id
< id
)
2694 else if (syms
[mid
]->section
->id
> id
)
2696 else if (syms
[mid
]->value
< value
)
2698 else if (syms
[mid
]->value
> value
)
2707 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2711 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2712 long static_count
, asymbol
**static_syms
,
2713 long dyn_count
, asymbol
**dyn_syms
,
2720 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2722 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2727 opd
= bfd_get_section_by_name (abfd
, ".opd");
2731 symcount
= static_count
;
2733 symcount
+= dyn_count
;
2737 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2741 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2743 /* Use both symbol tables. */
2744 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2745 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2747 else if (!relocatable
&& static_count
== 0)
2748 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2750 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2752 synthetic_opd
= opd
;
2753 synthetic_relocatable
= relocatable
;
2754 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2756 if (!relocatable
&& symcount
> 1)
2759 /* Trim duplicate syms, since we may have merged the normal and
2760 dynamic symbols. Actually, we only care about syms that have
2761 different values, so trim any with the same value. */
2762 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2763 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
2764 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
2765 syms
[j
++] = syms
[i
];
2770 if (syms
[i
]->section
== opd
)
2774 for (; i
< symcount
; ++i
)
2775 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2776 != (SEC_CODE
| SEC_ALLOC
))
2777 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2781 for (; i
< symcount
; ++i
)
2782 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2786 for (; i
< symcount
; ++i
)
2787 if (syms
[i
]->section
!= opd
)
2791 for (; i
< symcount
; ++i
)
2792 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2793 != (SEC_CODE
| SEC_ALLOC
))
2798 if (opdsymend
== secsymend
)
2803 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2808 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2809 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
2813 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
2820 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2824 while (r
< opd
->relocation
+ relcount
2825 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2828 if (r
== opd
->relocation
+ relcount
)
2831 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2834 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2837 sym
= *r
->sym_ptr_ptr
;
2838 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2839 sym
->section
->id
, sym
->value
+ r
->addend
))
2842 size
+= sizeof (asymbol
);
2843 size
+= strlen (syms
[i
]->name
) + 2;
2847 s
= *ret
= bfd_malloc (size
);
2854 names
= (char *) (s
+ count
);
2856 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2860 while (r
< opd
->relocation
+ relcount
2861 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2864 if (r
== opd
->relocation
+ relcount
)
2867 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2870 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2873 sym
= *r
->sym_ptr_ptr
;
2874 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2875 sym
->section
->id
, sym
->value
+ r
->addend
))
2880 s
->section
= sym
->section
;
2881 s
->value
= sym
->value
+ r
->addend
;
2884 len
= strlen (syms
[i
]->name
);
2885 memcpy (names
, syms
[i
]->name
, len
+ 1);
2896 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
2900 free_contents_and_exit
:
2908 for (i
= secsymend
; i
< opdsymend
; ++i
)
2912 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2913 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2916 size
+= sizeof (asymbol
);
2917 size
+= strlen (syms
[i
]->name
) + 2;
2921 s
= *ret
= bfd_malloc (size
);
2923 goto free_contents_and_exit
;
2925 names
= (char *) (s
+ count
);
2927 for (i
= secsymend
; i
< opdsymend
; ++i
)
2931 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2932 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2936 asection
*sec
= abfd
->sections
;
2943 long mid
= (lo
+ hi
) >> 1;
2944 if (syms
[mid
]->section
->vma
< ent
)
2946 else if (syms
[mid
]->section
->vma
> ent
)
2950 sec
= syms
[mid
]->section
;
2955 if (lo
>= hi
&& lo
> codesecsym
)
2956 sec
= syms
[lo
- 1]->section
;
2958 for (; sec
!= NULL
; sec
= sec
->next
)
2962 if ((sec
->flags
& SEC_ALLOC
) == 0
2963 || (sec
->flags
& SEC_LOAD
) == 0)
2965 if ((sec
->flags
& SEC_CODE
) != 0)
2968 s
->value
= ent
- s
->section
->vma
;
2971 len
= strlen (syms
[i
]->name
);
2972 memcpy (names
, syms
[i
]->name
, len
+ 1);
2985 /* The following functions are specific to the ELF linker, while
2986 functions above are used generally. Those named ppc64_elf_* are
2987 called by the main ELF linker code. They appear in this file more
2988 or less in the order in which they are called. eg.
2989 ppc64_elf_check_relocs is called early in the link process,
2990 ppc64_elf_finish_dynamic_sections is one of the last functions
2993 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2994 functions have both a function code symbol and a function descriptor
2995 symbol. A call to foo in a relocatable object file looks like:
3002 The function definition in another object file might be:
3006 . .quad .TOC.@tocbase
3012 When the linker resolves the call during a static link, the branch
3013 unsurprisingly just goes to .foo and the .opd information is unused.
3014 If the function definition is in a shared library, things are a little
3015 different: The call goes via a plt call stub, the opd information gets
3016 copied to the plt, and the linker patches the nop.
3024 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3025 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3026 . std 2,40(1) # this is the general idea
3034 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3036 The "reloc ()" notation is supposed to indicate that the linker emits
3037 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3040 What are the difficulties here? Well, firstly, the relocations
3041 examined by the linker in check_relocs are against the function code
3042 sym .foo, while the dynamic relocation in the plt is emitted against
3043 the function descriptor symbol, foo. Somewhere along the line, we need
3044 to carefully copy dynamic link information from one symbol to the other.
3045 Secondly, the generic part of the elf linker will make .foo a dynamic
3046 symbol as is normal for most other backends. We need foo dynamic
3047 instead, at least for an application final link. However, when
3048 creating a shared library containing foo, we need to have both symbols
3049 dynamic so that references to .foo are satisfied during the early
3050 stages of linking. Otherwise the linker might decide to pull in a
3051 definition from some other object, eg. a static library.
3053 Update: As of August 2004, we support a new convention. Function
3054 calls may use the function descriptor symbol, ie. "bl foo". This
3055 behaves exactly as "bl .foo". */
3057 /* The linker needs to keep track of the number of relocs that it
3058 decides to copy as dynamic relocs in check_relocs for each symbol.
3059 This is so that it can later discard them if they are found to be
3060 unnecessary. We store the information in a field extending the
3061 regular ELF linker hash table. */
3063 struct ppc_dyn_relocs
3065 struct ppc_dyn_relocs
*next
;
3067 /* The input section of the reloc. */
3070 /* Total number of relocs copied for the input section. */
3071 bfd_size_type count
;
3073 /* Number of pc-relative relocs copied for the input section. */
3074 bfd_size_type pc_count
;
3077 /* Track GOT entries needed for a given symbol. We might need more
3078 than one got entry per symbol. */
3081 struct got_entry
*next
;
3083 /* The symbol addend that we'll be placing in the GOT. */
3086 /* Unlike other ELF targets, we use separate GOT entries for the same
3087 symbol referenced from different input files. This is to support
3088 automatic multiple TOC/GOT sections, where the TOC base can vary
3089 from one input file to another.
3091 Point to the BFD owning this GOT entry. */
3094 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3095 TLS_TPREL or TLS_DTPREL for tls entries. */
3098 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3101 bfd_signed_vma refcount
;
3106 /* The same for PLT. */
3109 struct plt_entry
*next
;
3115 bfd_signed_vma refcount
;
3120 /* Of those relocs that might be copied as dynamic relocs, this macro
3121 selects those that must be copied when linking a shared library,
3122 even when the symbol is local. */
3124 #define MUST_BE_DYN_RELOC(RTYPE) \
3125 ((RTYPE) != R_PPC64_REL32 \
3126 && (RTYPE) != R_PPC64_REL64 \
3127 && (RTYPE) != R_PPC64_REL30)
3129 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3130 copying dynamic variables from a shared lib into an app's dynbss
3131 section, and instead use a dynamic relocation to point into the
3132 shared lib. With code that gcc generates, it's vital that this be
3133 enabled; In the PowerPC64 ABI, the address of a function is actually
3134 the address of a function descriptor, which resides in the .opd
3135 section. gcc uses the descriptor directly rather than going via the
3136 GOT as some other ABI's do, which means that initialized function
3137 pointers must reference the descriptor. Thus, a function pointer
3138 initialized to the address of a function in a shared library will
3139 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3140 redefines the function descriptor symbol to point to the copy. This
3141 presents a problem as a plt entry for that function is also
3142 initialized from the function descriptor symbol and the copy reloc
3143 may not be initialized first. */
3144 #define ELIMINATE_COPY_RELOCS 1
3146 /* Section name for stubs is the associated section name plus this
3148 #define STUB_SUFFIX ".stub"
3151 ppc_stub_long_branch:
3152 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3153 destination, but a 24 bit branch in a stub section will reach.
3156 ppc_stub_plt_branch:
3157 Similar to the above, but a 24 bit branch in the stub section won't
3158 reach its destination.
3159 . addis %r12,%r2,xxx@toc@ha
3160 . ld %r11,xxx@toc@l(%r12)
3165 Used to call a function in a shared library. If it so happens that
3166 the plt entry referenced crosses a 64k boundary, then an extra
3167 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3168 xxx+16 as appropriate.
3169 . addis %r12,%r2,xxx@toc@ha
3171 . ld %r11,xxx+0@toc@l(%r12)
3172 . ld %r2,xxx+8@toc@l(%r12)
3174 . ld %r11,xxx+16@toc@l(%r12)
3177 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3178 code to adjust the value and save r2 to support multiple toc sections.
3179 A ppc_stub_long_branch with an r2 offset looks like:
3181 . addis %r2,%r2,off@ha
3182 . addi %r2,%r2,off@l
3185 A ppc_stub_plt_branch with an r2 offset looks like:
3187 . addis %r12,%r2,xxx@toc@ha
3188 . ld %r11,xxx@toc@l(%r12)
3189 . addis %r2,%r2,off@ha
3190 . addi %r2,%r2,off@l
3195 enum ppc_stub_type
{
3197 ppc_stub_long_branch
,
3198 ppc_stub_long_branch_r2off
,
3199 ppc_stub_plt_branch
,
3200 ppc_stub_plt_branch_r2off
,
3204 struct ppc_stub_hash_entry
{
3206 /* Base hash table entry structure. */
3207 struct bfd_hash_entry root
;
3209 enum ppc_stub_type stub_type
;
3211 /* The stub section. */
3214 /* Offset within stub_sec of the beginning of this stub. */
3215 bfd_vma stub_offset
;
3217 /* Given the symbol's value and its section we can determine its final
3218 value when building the stubs (so the stub knows where to jump. */
3219 bfd_vma target_value
;
3220 asection
*target_section
;
3222 /* The symbol table entry, if any, that this was derived from. */
3223 struct ppc_link_hash_entry
*h
;
3225 /* And the reloc addend that this was derived from. */
3228 /* Where this stub is being called from, or, in the case of combined
3229 stub sections, the first input section in the group. */
3233 struct ppc_branch_hash_entry
{
3235 /* Base hash table entry structure. */
3236 struct bfd_hash_entry root
;
3238 /* Offset within .branch_lt. */
3239 unsigned int offset
;
3241 /* Generation marker. */
3245 struct ppc_link_hash_entry
3247 struct elf_link_hash_entry elf
;
3249 /* A pointer to the most recently used stub hash entry against this
3251 struct ppc_stub_hash_entry
*stub_cache
;
3253 /* Track dynamic relocs copied for this symbol. */
3254 struct ppc_dyn_relocs
*dyn_relocs
;
3256 /* Link between function code and descriptor symbols. */
3257 struct ppc_link_hash_entry
*oh
;
3259 /* Flag function code and descriptor symbols. */
3260 unsigned int is_func
:1;
3261 unsigned int is_func_descriptor
:1;
3262 unsigned int fake
:1;
3264 /* Whether global opd/toc sym has been adjusted or not.
3265 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3266 should be set for all globals defined in any opd/toc section. */
3267 unsigned int adjust_done
:1;
3269 /* Set if we twiddled this symbol to weak at some stage. */
3270 unsigned int was_undefined
:1;
3272 /* Contexts in which symbol is used in the GOT (or TOC).
3273 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3274 corresponding relocs are encountered during check_relocs.
3275 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3276 indicate the corresponding GOT entry type is not needed.
3277 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3278 a TPREL one. We use a separate flag rather than setting TPREL
3279 just for convenience in distinguishing the two cases. */
3280 #define TLS_GD 1 /* GD reloc. */
3281 #define TLS_LD 2 /* LD reloc. */
3282 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3283 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3284 #define TLS_TLS 16 /* Any TLS reloc. */
3285 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3286 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3290 /* ppc64 ELF linker hash table. */
3292 struct ppc_link_hash_table
3294 struct elf_link_hash_table elf
;
3296 /* The stub hash table. */
3297 struct bfd_hash_table stub_hash_table
;
3299 /* Another hash table for plt_branch stubs. */
3300 struct bfd_hash_table branch_hash_table
;
3302 /* Linker stub bfd. */
3305 /* Linker call-backs. */
3306 asection
* (*add_stub_section
) (const char *, asection
*);
3307 void (*layout_sections_again
) (void);
3309 /* Array to keep track of which stub sections have been created, and
3310 information on stub grouping. */
3312 /* This is the section to which stubs in the group will be attached. */
3314 /* The stub section. */
3316 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3320 /* Temp used when calculating TOC pointers. */
3323 /* Highest input section id. */
3326 /* Highest output section index. */
3329 /* List of input sections for each output section. */
3330 asection
**input_list
;
3332 /* Short-cuts to get to dynamic linker sections. */
3343 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3344 struct ppc_link_hash_entry
*tls_get_addr
;
3345 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3348 unsigned long stub_count
[ppc_stub_plt_call
];
3350 /* Number of stubs against global syms. */
3351 unsigned long stub_globals
;
3353 /* Set if we should emit symbols for stubs. */
3354 unsigned int emit_stub_syms
:1;
3356 /* Support for multiple toc sections. */
3357 unsigned int no_multi_toc
:1;
3358 unsigned int multi_toc_needed
:1;
3361 unsigned int stub_error
:1;
3363 /* Flag set when small branches are detected. Used to
3364 select suitable defaults for the stub group size. */
3365 unsigned int has_14bit_branch
:1;
3367 /* Temp used by ppc64_elf_check_directives. */
3368 unsigned int twiddled_syms
:1;
3370 /* Incremented every time we size stubs. */
3371 unsigned int stub_iteration
;
3373 /* Small local sym to section mapping cache. */
3374 struct sym_sec_cache sym_sec
;
3377 /* Rename some of the generic section flags to better document how they
3379 #define has_toc_reloc has_gp_reloc
3380 #define makes_toc_func_call need_finalize_relax
3381 #define call_check_in_progress reloc_done
3383 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3385 #define ppc_hash_table(p) \
3386 ((struct ppc_link_hash_table *) ((p)->hash))
3388 #define ppc_stub_hash_lookup(table, string, create, copy) \
3389 ((struct ppc_stub_hash_entry *) \
3390 bfd_hash_lookup ((table), (string), (create), (copy)))
3392 #define ppc_branch_hash_lookup(table, string, create, copy) \
3393 ((struct ppc_branch_hash_entry *) \
3394 bfd_hash_lookup ((table), (string), (create), (copy)))
3396 /* Create an entry in the stub hash table. */
3398 static struct bfd_hash_entry
*
3399 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3400 struct bfd_hash_table
*table
,
3403 /* Allocate the structure if it has not already been allocated by a
3407 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3412 /* Call the allocation method of the superclass. */
3413 entry
= bfd_hash_newfunc (entry
, table
, string
);
3416 struct ppc_stub_hash_entry
*eh
;
3418 /* Initialize the local fields. */
3419 eh
= (struct ppc_stub_hash_entry
*) entry
;
3420 eh
->stub_type
= ppc_stub_none
;
3421 eh
->stub_sec
= NULL
;
3422 eh
->stub_offset
= 0;
3423 eh
->target_value
= 0;
3424 eh
->target_section
= NULL
;
3432 /* Create an entry in the branch hash table. */
3434 static struct bfd_hash_entry
*
3435 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3436 struct bfd_hash_table
*table
,
3439 /* Allocate the structure if it has not already been allocated by a
3443 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3448 /* Call the allocation method of the superclass. */
3449 entry
= bfd_hash_newfunc (entry
, table
, string
);
3452 struct ppc_branch_hash_entry
*eh
;
3454 /* Initialize the local fields. */
3455 eh
= (struct ppc_branch_hash_entry
*) entry
;
3463 /* Create an entry in a ppc64 ELF linker hash table. */
3465 static struct bfd_hash_entry
*
3466 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3467 struct bfd_hash_table
*table
,
3470 /* Allocate the structure if it has not already been allocated by a
3474 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3479 /* Call the allocation method of the superclass. */
3480 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3483 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3485 memset (&eh
->stub_cache
, 0,
3486 (sizeof (struct ppc_link_hash_entry
)
3487 - offsetof (struct ppc_link_hash_entry
, stub_cache
)));
3493 /* Create a ppc64 ELF linker hash table. */
3495 static struct bfd_link_hash_table
*
3496 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3498 struct ppc_link_hash_table
*htab
;
3499 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3501 htab
= bfd_zmalloc (amt
);
3505 if (! _bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
))
3511 /* Init the stub hash table too. */
3512 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
))
3515 /* And the branch hash table. */
3516 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
))
3519 /* Initializing two fields of the union is just cosmetic. We really
3520 only care about glist, but when compiled on a 32-bit host the
3521 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3522 debugger inspection of these fields look nicer. */
3523 htab
->elf
.init_got_refcount
.refcount
= 0;
3524 htab
->elf
.init_got_refcount
.glist
= NULL
;
3525 htab
->elf
.init_plt_refcount
.refcount
= 0;
3526 htab
->elf
.init_plt_refcount
.glist
= NULL
;
3527 htab
->elf
.init_got_offset
.offset
= 0;
3528 htab
->elf
.init_got_offset
.glist
= NULL
;
3529 htab
->elf
.init_plt_offset
.offset
= 0;
3530 htab
->elf
.init_plt_offset
.glist
= NULL
;
3532 return &htab
->elf
.root
;
3535 /* Free the derived linker hash table. */
3538 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3540 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3542 bfd_hash_table_free (&ret
->stub_hash_table
);
3543 bfd_hash_table_free (&ret
->branch_hash_table
);
3544 _bfd_generic_link_hash_table_free (hash
);
3547 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3550 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3552 struct ppc_link_hash_table
*htab
;
3554 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3556 /* Always hook our dynamic sections into the first bfd, which is the
3557 linker created stub bfd. This ensures that the GOT header is at
3558 the start of the output TOC section. */
3559 htab
= ppc_hash_table (info
);
3560 htab
->stub_bfd
= abfd
;
3561 htab
->elf
.dynobj
= abfd
;
3564 /* Build a name for an entry in the stub hash table. */
3567 ppc_stub_name (const asection
*input_section
,
3568 const asection
*sym_sec
,
3569 const struct ppc_link_hash_entry
*h
,
3570 const Elf_Internal_Rela
*rel
)
3575 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3576 offsets from a sym as a branch target? In fact, we could
3577 probably assume the addend is always zero. */
3578 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3582 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3583 stub_name
= bfd_malloc (len
);
3584 if (stub_name
== NULL
)
3587 sprintf (stub_name
, "%08x.%s+%x",
3588 input_section
->id
& 0xffffffff,
3589 h
->elf
.root
.root
.string
,
3590 (int) rel
->r_addend
& 0xffffffff);
3594 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3595 stub_name
= bfd_malloc (len
);
3596 if (stub_name
== NULL
)
3599 sprintf (stub_name
, "%08x.%x:%x+%x",
3600 input_section
->id
& 0xffffffff,
3601 sym_sec
->id
& 0xffffffff,
3602 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3603 (int) rel
->r_addend
& 0xffffffff);
3605 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
3606 stub_name
[len
- 2] = 0;
3610 /* Look up an entry in the stub hash. Stub entries are cached because
3611 creating the stub name takes a bit of time. */
3613 static struct ppc_stub_hash_entry
*
3614 ppc_get_stub_entry (const asection
*input_section
,
3615 const asection
*sym_sec
,
3616 struct ppc_link_hash_entry
*h
,
3617 const Elf_Internal_Rela
*rel
,
3618 struct ppc_link_hash_table
*htab
)
3620 struct ppc_stub_hash_entry
*stub_entry
;
3621 const asection
*id_sec
;
3623 /* If this input section is part of a group of sections sharing one
3624 stub section, then use the id of the first section in the group.
3625 Stub names need to include a section id, as there may well be
3626 more than one stub used to reach say, printf, and we need to
3627 distinguish between them. */
3628 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3630 if (h
!= NULL
&& h
->stub_cache
!= NULL
3631 && h
->stub_cache
->h
== h
3632 && h
->stub_cache
->id_sec
== id_sec
)
3634 stub_entry
= h
->stub_cache
;
3640 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3641 if (stub_name
== NULL
)
3644 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3645 stub_name
, FALSE
, FALSE
);
3647 h
->stub_cache
= stub_entry
;
3655 /* Add a new stub entry to the stub hash. Not all fields of the new
3656 stub entry are initialised. */
3658 static struct ppc_stub_hash_entry
*
3659 ppc_add_stub (const char *stub_name
,
3661 struct ppc_link_hash_table
*htab
)
3665 struct ppc_stub_hash_entry
*stub_entry
;
3667 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3668 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3669 if (stub_sec
== NULL
)
3671 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3672 if (stub_sec
== NULL
)
3678 namelen
= strlen (link_sec
->name
);
3679 len
= namelen
+ sizeof (STUB_SUFFIX
);
3680 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3684 memcpy (s_name
, link_sec
->name
, namelen
);
3685 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3686 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3687 if (stub_sec
== NULL
)
3689 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3691 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3694 /* Enter this entry into the linker stub hash table. */
3695 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3697 if (stub_entry
== NULL
)
3699 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
3700 section
->owner
, stub_name
);
3704 stub_entry
->stub_sec
= stub_sec
;
3705 stub_entry
->stub_offset
= 0;
3706 stub_entry
->id_sec
= link_sec
;
3710 /* Create sections for linker generated code. */
3713 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3715 struct ppc_link_hash_table
*htab
;
3718 htab
= ppc_hash_table (info
);
3720 /* Create .sfpr for code to save and restore fp regs. */
3721 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3722 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3723 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
3725 if (htab
->sfpr
== NULL
3726 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3729 /* Create .glink for lazy dynamic linking support. */
3730 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
3732 if (htab
->glink
== NULL
3733 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 2))
3736 /* Create .branch_lt for plt_branch stubs. */
3737 flags
= (SEC_ALLOC
| SEC_LOAD
3738 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3739 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
3741 if (htab
->brlt
== NULL
3742 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3745 if (info
->shared
|| info
->emitrelocations
)
3747 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3748 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3749 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
3753 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3759 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3760 not already done. */
3763 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3765 asection
*got
, *relgot
;
3767 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
3771 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
3774 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
3779 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3780 | SEC_LINKER_CREATED
);
3782 got
= bfd_make_section_with_flags (abfd
, ".got", flags
);
3784 || !bfd_set_section_alignment (abfd
, got
, 3))
3787 relgot
= bfd_make_section_with_flags (abfd
, ".rela.got",
3788 flags
| SEC_READONLY
);
3790 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
3793 ppc64_elf_tdata (abfd
)->got
= got
;
3794 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
3798 /* Create the dynamic sections, and set up shortcuts. */
3801 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3803 struct ppc_link_hash_table
*htab
;
3805 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3808 htab
= ppc_hash_table (info
);
3810 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3811 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3812 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3813 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3815 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3817 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3818 || (!info
->shared
&& !htab
->relbss
))
3824 /* Merge PLT info on FROM with that on TO. */
3827 move_plt_plist (struct ppc_link_hash_entry
*from
,
3828 struct ppc_link_hash_entry
*to
)
3830 if (from
->elf
.plt
.plist
!= NULL
)
3832 if (to
->elf
.plt
.plist
!= NULL
)
3834 struct plt_entry
**entp
;
3835 struct plt_entry
*ent
;
3837 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3839 struct plt_entry
*dent
;
3841 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3842 if (dent
->addend
== ent
->addend
)
3844 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3851 *entp
= to
->elf
.plt
.plist
;
3854 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
3855 from
->elf
.plt
.plist
= NULL
;
3859 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3862 ppc64_elf_copy_indirect_symbol
3863 (const struct elf_backend_data
*bed ATTRIBUTE_UNUSED
,
3864 struct elf_link_hash_entry
*dir
,
3865 struct elf_link_hash_entry
*ind
)
3867 struct ppc_link_hash_entry
*edir
, *eind
;
3869 edir
= (struct ppc_link_hash_entry
*) dir
;
3870 eind
= (struct ppc_link_hash_entry
*) ind
;
3872 /* Copy over any dynamic relocs we may have on the indirect sym. */
3873 if (eind
->dyn_relocs
!= NULL
)
3875 if (edir
->dyn_relocs
!= NULL
)
3877 struct ppc_dyn_relocs
**pp
;
3878 struct ppc_dyn_relocs
*p
;
3880 if (eind
->elf
.root
.type
== bfd_link_hash_indirect
)
3883 /* Add reloc counts against the weak sym to the strong sym
3884 list. Merge any entries against the same section. */
3885 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3887 struct ppc_dyn_relocs
*q
;
3889 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3890 if (q
->sec
== p
->sec
)
3892 q
->pc_count
+= p
->pc_count
;
3893 q
->count
+= p
->count
;
3900 *pp
= edir
->dyn_relocs
;
3903 edir
->dyn_relocs
= eind
->dyn_relocs
;
3904 eind
->dyn_relocs
= NULL
;
3907 edir
->is_func
|= eind
->is_func
;
3908 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
3909 edir
->tls_mask
|= eind
->tls_mask
;
3911 /* If called to transfer flags for a weakdef during processing
3912 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3913 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3914 if (!(ELIMINATE_COPY_RELOCS
3915 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3916 && edir
->elf
.dynamic_adjusted
))
3917 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3919 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3920 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3921 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3922 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3924 /* If we were called to copy over info for a weak sym, that's all. */
3925 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3928 /* Copy over got entries that we may have already seen to the
3929 symbol which just became indirect. */
3930 if (eind
->elf
.got
.glist
!= NULL
)
3932 if (edir
->elf
.got
.glist
!= NULL
)
3934 struct got_entry
**entp
;
3935 struct got_entry
*ent
;
3937 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
3939 struct got_entry
*dent
;
3941 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
3942 if (dent
->addend
== ent
->addend
3943 && dent
->owner
== ent
->owner
3944 && dent
->tls_type
== ent
->tls_type
)
3946 dent
->got
.refcount
+= ent
->got
.refcount
;
3953 *entp
= edir
->elf
.got
.glist
;
3956 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
3957 eind
->elf
.got
.glist
= NULL
;
3960 /* And plt entries. */
3961 move_plt_plist (eind
, edir
);
3963 if (edir
->elf
.dynindx
== -1)
3965 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3966 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3967 eind
->elf
.dynindx
= -1;
3968 eind
->elf
.dynstr_index
= 0;
3971 BFD_ASSERT (eind
->elf
.dynindx
== -1);
3974 /* Find the function descriptor hash entry from the given function code
3975 hash entry FH. Link the entries via their OH fields. */
3977 static struct ppc_link_hash_entry
*
3978 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
3980 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
3984 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
3986 fdh
= (struct ppc_link_hash_entry
*)
3987 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
3990 fdh
->is_func_descriptor
= 1;
4000 /* Make a fake function descriptor sym for the code sym FH. */
4002 static struct ppc_link_hash_entry
*
4003 make_fdh (struct bfd_link_info
*info
,
4004 struct ppc_link_hash_entry
*fh
)
4008 struct bfd_link_hash_entry
*bh
;
4009 struct ppc_link_hash_entry
*fdh
;
4011 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4012 newsym
= bfd_make_empty_symbol (abfd
);
4013 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4014 newsym
->section
= bfd_und_section_ptr
;
4016 newsym
->flags
= BSF_WEAK
;
4019 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4020 newsym
->flags
, newsym
->section
,
4021 newsym
->value
, NULL
, FALSE
, FALSE
,
4025 fdh
= (struct ppc_link_hash_entry
*) bh
;
4026 fdh
->elf
.non_elf
= 0;
4028 fdh
->is_func_descriptor
= 1;
4035 /* Hacks to support old ABI code.
4036 When making function calls, old ABI code references function entry
4037 points (dot symbols), while new ABI code references the function
4038 descriptor symbol. We need to make any combination of reference and
4039 definition work together, without breaking archive linking.
4041 For a defined function "foo" and an undefined call to "bar":
4042 An old object defines "foo" and ".foo", references ".bar" (possibly
4044 A new object defines "foo" and references "bar".
4046 A new object thus has no problem with its undefined symbols being
4047 satisfied by definitions in an old object. On the other hand, the
4048 old object won't have ".bar" satisfied by a new object. */
4050 /* Fix function descriptor symbols defined in .opd sections to be
4054 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4055 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4056 Elf_Internal_Sym
*isym
,
4058 flagword
*flags ATTRIBUTE_UNUSED
,
4060 bfd_vma
*value ATTRIBUTE_UNUSED
)
4063 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
4064 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4066 if ((*name
)[0] == '.'
4067 && ELF_ST_BIND (isym
->st_info
) == STB_GLOBAL
4068 && ELF_ST_TYPE (isym
->st_info
) < STT_SECTION
4069 && is_ppc64_elf_target (ibfd
->xvec
))
4070 ppc64_elf_tdata (ibfd
)->u
.has_dotsym
= 1;
4075 /* This function makes an old ABI object reference to ".bar" cause the
4076 inclusion of a new ABI object archive that defines "bar".
4077 NAME is a symbol defined in an archive. Return a symbol in the hash
4078 table that might be satisfied by the archive symbols. */
4080 static struct elf_link_hash_entry
*
4081 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4082 struct bfd_link_info
*info
,
4085 struct elf_link_hash_entry
*h
;
4089 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4091 /* Don't return this sym if it is a fake function descriptor
4092 created by add_symbol_adjust. */
4093 && !(h
->root
.type
== bfd_link_hash_undefweak
4094 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4100 len
= strlen (name
);
4101 dot_name
= bfd_alloc (abfd
, len
+ 2);
4102 if (dot_name
== NULL
)
4103 return (struct elf_link_hash_entry
*) 0 - 1;
4105 memcpy (dot_name
+ 1, name
, len
+ 1);
4106 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4107 bfd_release (abfd
, dot_name
);
4111 /* This function satisfies all old ABI object references to ".bar" if a
4112 new ABI object defines "bar". Well, at least, undefined dot symbols
4113 are made weak. This stops later archive searches from including an
4114 object if we already have a function descriptor definition. It also
4115 prevents the linker complaining about undefined symbols.
4116 We also check and correct mismatched symbol visibility here. The
4117 most restrictive visibility of the function descriptor and the
4118 function entry symbol is used. */
4120 struct add_symbol_adjust_data
4122 struct bfd_link_info
*info
;
4127 add_symbol_adjust (struct elf_link_hash_entry
*h
, void *inf
)
4129 struct add_symbol_adjust_data
*data
;
4130 struct ppc_link_hash_table
*htab
;
4131 struct ppc_link_hash_entry
*eh
;
4132 struct ppc_link_hash_entry
*fdh
;
4134 if (h
->root
.type
== bfd_link_hash_indirect
)
4137 if (h
->root
.type
== bfd_link_hash_warning
)
4138 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4140 if (h
->root
.root
.string
[0] != '.')
4144 htab
= ppc_hash_table (data
->info
);
4145 eh
= (struct ppc_link_hash_entry
*) h
;
4146 fdh
= get_fdh (eh
, htab
);
4148 && !data
->info
->relocatable
4149 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4150 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4151 && eh
->elf
.ref_regular
)
4153 /* Make an undefweak function descriptor sym, which is enough to
4154 pull in an --as-needed shared lib, but won't cause link
4155 errors. Archives are handled elsewhere. */
4156 fdh
= make_fdh (data
->info
, eh
);
4160 fdh
->elf
.ref_regular
= 1;
4162 else if (fdh
!= NULL
)
4164 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4165 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4166 if (entry_vis
< descr_vis
)
4167 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4168 else if (entry_vis
> descr_vis
)
4169 eh
->elf
.other
+= descr_vis
- entry_vis
;
4171 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4172 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4173 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4175 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4176 eh
->was_undefined
= 1;
4177 htab
->twiddled_syms
= 1;
4185 ppc64_elf_check_directives (bfd
*abfd
, struct bfd_link_info
*info
)
4187 struct ppc_link_hash_table
*htab
;
4188 struct add_symbol_adjust_data data
;
4190 if (!is_ppc64_elf_target (abfd
->xvec
))
4193 if (!ppc64_elf_tdata (abfd
)->u
.has_dotsym
)
4195 ppc64_elf_tdata (abfd
)->u
.deleted_section
= NULL
;
4197 htab
= ppc_hash_table (info
);
4198 if (!is_ppc64_elf_target (htab
->elf
.root
.creator
))
4203 elf_link_hash_traverse (&htab
->elf
, add_symbol_adjust
, &data
);
4205 /* We need to fix the undefs list for any syms we have twiddled to
4207 if (htab
->twiddled_syms
)
4209 bfd_link_repair_undef_list (&htab
->elf
.root
);
4210 htab
->twiddled_syms
= 0;
4216 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4217 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4219 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4220 char *local_got_tls_masks
;
4222 if (local_got_ents
== NULL
)
4224 bfd_size_type size
= symtab_hdr
->sh_info
;
4226 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
4227 local_got_ents
= bfd_zalloc (abfd
, size
);
4228 if (local_got_ents
== NULL
)
4230 elf_local_got_ents (abfd
) = local_got_ents
;
4233 if ((tls_type
& TLS_EXPLICIT
) == 0)
4235 struct got_entry
*ent
;
4237 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4238 if (ent
->addend
== r_addend
4239 && ent
->owner
== abfd
4240 && ent
->tls_type
== tls_type
)
4244 bfd_size_type amt
= sizeof (*ent
);
4245 ent
= bfd_alloc (abfd
, amt
);
4248 ent
->next
= local_got_ents
[r_symndx
];
4249 ent
->addend
= r_addend
;
4251 ent
->tls_type
= tls_type
;
4252 ent
->got
.refcount
= 0;
4253 local_got_ents
[r_symndx
] = ent
;
4255 ent
->got
.refcount
+= 1;
4258 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
4259 local_got_tls_masks
[r_symndx
] |= tls_type
;
4264 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
4266 struct plt_entry
*ent
;
4268 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4269 if (ent
->addend
== addend
)
4273 bfd_size_type amt
= sizeof (*ent
);
4274 ent
= bfd_alloc (abfd
, amt
);
4277 ent
->next
= eh
->elf
.plt
.plist
;
4278 ent
->addend
= addend
;
4279 ent
->plt
.refcount
= 0;
4280 eh
->elf
.plt
.plist
= ent
;
4282 ent
->plt
.refcount
+= 1;
4283 eh
->elf
.needs_plt
= 1;
4284 if (eh
->elf
.root
.root
.string
[0] == '.'
4285 && eh
->elf
.root
.root
.string
[1] != '\0')
4290 /* Look through the relocs for a section during the first phase, and
4291 calculate needed space in the global offset table, procedure
4292 linkage table, and dynamic reloc sections. */
4295 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4296 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4298 struct ppc_link_hash_table
*htab
;
4299 Elf_Internal_Shdr
*symtab_hdr
;
4300 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4301 const Elf_Internal_Rela
*rel
;
4302 const Elf_Internal_Rela
*rel_end
;
4304 asection
**opd_sym_map
;
4306 if (info
->relocatable
)
4309 /* Don't do anything special with non-loaded, non-alloced sections.
4310 In particular, any relocs in such sections should not affect GOT
4311 and PLT reference counting (ie. we don't allow them to create GOT
4312 or PLT entries), there's no possibility or desire to optimize TLS
4313 relocs, and there's not much point in propagating relocs to shared
4314 libs that the dynamic linker won't relocate. */
4315 if ((sec
->flags
& SEC_ALLOC
) == 0)
4318 htab
= ppc_hash_table (info
);
4319 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4321 sym_hashes
= elf_sym_hashes (abfd
);
4322 sym_hashes_end
= (sym_hashes
4323 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4324 - symtab_hdr
->sh_info
);
4328 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4330 /* Garbage collection needs some extra help with .opd sections.
4331 We don't want to necessarily keep everything referenced by
4332 relocs in .opd, as that would keep all functions. Instead,
4333 if we reference an .opd symbol (a function descriptor), we
4334 want to keep the function code symbol's section. This is
4335 easy for global symbols, but for local syms we need to keep
4336 information about the associated function section. Later, if
4337 edit_opd deletes entries, we'll use this array to adjust
4338 local syms in .opd. */
4340 asection
*func_section
;
4345 amt
= sec
->size
* sizeof (union opd_info
) / 8;
4346 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4347 if (opd_sym_map
== NULL
)
4349 ppc64_elf_section_data (sec
)->opd
.func_sec
= opd_sym_map
;
4352 if (htab
->sfpr
== NULL
4353 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4356 rel_end
= relocs
+ sec
->reloc_count
;
4357 for (rel
= relocs
; rel
< rel_end
; rel
++)
4359 unsigned long r_symndx
;
4360 struct elf_link_hash_entry
*h
;
4361 enum elf_ppc64_reloc_type r_type
;
4364 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4365 if (r_symndx
< symtab_hdr
->sh_info
)
4368 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4370 r_type
= ELF64_R_TYPE (rel
->r_info
);
4373 case R_PPC64_GOT_TLSLD16
:
4374 case R_PPC64_GOT_TLSLD16_LO
:
4375 case R_PPC64_GOT_TLSLD16_HI
:
4376 case R_PPC64_GOT_TLSLD16_HA
:
4377 ppc64_tlsld_got (abfd
)->refcount
+= 1;
4378 tls_type
= TLS_TLS
| TLS_LD
;
4381 case R_PPC64_GOT_TLSGD16
:
4382 case R_PPC64_GOT_TLSGD16_LO
:
4383 case R_PPC64_GOT_TLSGD16_HI
:
4384 case R_PPC64_GOT_TLSGD16_HA
:
4385 tls_type
= TLS_TLS
| TLS_GD
;
4388 case R_PPC64_GOT_TPREL16_DS
:
4389 case R_PPC64_GOT_TPREL16_LO_DS
:
4390 case R_PPC64_GOT_TPREL16_HI
:
4391 case R_PPC64_GOT_TPREL16_HA
:
4393 info
->flags
|= DF_STATIC_TLS
;
4394 tls_type
= TLS_TLS
| TLS_TPREL
;
4397 case R_PPC64_GOT_DTPREL16_DS
:
4398 case R_PPC64_GOT_DTPREL16_LO_DS
:
4399 case R_PPC64_GOT_DTPREL16_HI
:
4400 case R_PPC64_GOT_DTPREL16_HA
:
4401 tls_type
= TLS_TLS
| TLS_DTPREL
;
4403 sec
->has_tls_reloc
= 1;
4407 case R_PPC64_GOT16_DS
:
4408 case R_PPC64_GOT16_HA
:
4409 case R_PPC64_GOT16_HI
:
4410 case R_PPC64_GOT16_LO
:
4411 case R_PPC64_GOT16_LO_DS
:
4412 /* This symbol requires a global offset table entry. */
4413 sec
->has_toc_reloc
= 1;
4414 if (ppc64_elf_tdata (abfd
)->got
== NULL
4415 && !create_got_section (abfd
, info
))
4420 struct ppc_link_hash_entry
*eh
;
4421 struct got_entry
*ent
;
4423 eh
= (struct ppc_link_hash_entry
*) h
;
4424 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4425 if (ent
->addend
== rel
->r_addend
4426 && ent
->owner
== abfd
4427 && ent
->tls_type
== tls_type
)
4431 bfd_size_type amt
= sizeof (*ent
);
4432 ent
= bfd_alloc (abfd
, amt
);
4435 ent
->next
= eh
->elf
.got
.glist
;
4436 ent
->addend
= rel
->r_addend
;
4438 ent
->tls_type
= tls_type
;
4439 ent
->got
.refcount
= 0;
4440 eh
->elf
.got
.glist
= ent
;
4442 ent
->got
.refcount
+= 1;
4443 eh
->tls_mask
|= tls_type
;
4446 /* This is a global offset table entry for a local symbol. */
4447 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4448 rel
->r_addend
, tls_type
))
4452 case R_PPC64_PLT16_HA
:
4453 case R_PPC64_PLT16_HI
:
4454 case R_PPC64_PLT16_LO
:
4457 /* This symbol requires a procedure linkage table entry. We
4458 actually build the entry in adjust_dynamic_symbol,
4459 because this might be a case of linking PIC code without
4460 linking in any dynamic objects, in which case we don't
4461 need to generate a procedure linkage table after all. */
4464 /* It does not make sense to have a procedure linkage
4465 table entry for a local symbol. */
4466 bfd_set_error (bfd_error_bad_value
);
4470 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4475 /* The following relocations don't need to propagate the
4476 relocation if linking a shared object since they are
4477 section relative. */
4478 case R_PPC64_SECTOFF
:
4479 case R_PPC64_SECTOFF_LO
:
4480 case R_PPC64_SECTOFF_HI
:
4481 case R_PPC64_SECTOFF_HA
:
4482 case R_PPC64_SECTOFF_DS
:
4483 case R_PPC64_SECTOFF_LO_DS
:
4484 case R_PPC64_DTPREL16
:
4485 case R_PPC64_DTPREL16_LO
:
4486 case R_PPC64_DTPREL16_HI
:
4487 case R_PPC64_DTPREL16_HA
:
4488 case R_PPC64_DTPREL16_DS
:
4489 case R_PPC64_DTPREL16_LO_DS
:
4490 case R_PPC64_DTPREL16_HIGHER
:
4491 case R_PPC64_DTPREL16_HIGHERA
:
4492 case R_PPC64_DTPREL16_HIGHEST
:
4493 case R_PPC64_DTPREL16_HIGHESTA
:
4498 case R_PPC64_TOC16_LO
:
4499 case R_PPC64_TOC16_HI
:
4500 case R_PPC64_TOC16_HA
:
4501 case R_PPC64_TOC16_DS
:
4502 case R_PPC64_TOC16_LO_DS
:
4503 sec
->has_toc_reloc
= 1;
4506 /* This relocation describes the C++ object vtable hierarchy.
4507 Reconstruct it for later use during GC. */
4508 case R_PPC64_GNU_VTINHERIT
:
4509 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4513 /* This relocation describes which C++ vtable entries are actually
4514 used. Record for later use during GC. */
4515 case R_PPC64_GNU_VTENTRY
:
4516 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4521 case R_PPC64_REL14_BRTAKEN
:
4522 case R_PPC64_REL14_BRNTAKEN
:
4523 htab
->has_14bit_branch
= 1;
4529 /* We may need a .plt entry if the function this reloc
4530 refers to is in a shared lib. */
4531 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4534 if (h
== &htab
->tls_get_addr
->elf
4535 || h
== &htab
->tls_get_addr_fd
->elf
)
4536 sec
->has_tls_reloc
= 1;
4537 else if (htab
->tls_get_addr
== NULL
4538 && !strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
4539 && (h
->root
.root
.string
[15] == 0
4540 || h
->root
.root
.string
[15] == '@'))
4542 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) h
;
4543 sec
->has_tls_reloc
= 1;
4545 else if (htab
->tls_get_addr_fd
== NULL
4546 && !strncmp (h
->root
.root
.string
, "__tls_get_addr", 14)
4547 && (h
->root
.root
.string
[14] == 0
4548 || h
->root
.root
.string
[14] == '@'))
4550 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) h
;
4551 sec
->has_tls_reloc
= 1;
4556 case R_PPC64_TPREL64
:
4557 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4559 info
->flags
|= DF_STATIC_TLS
;
4562 case R_PPC64_DTPMOD64
:
4563 if (rel
+ 1 < rel_end
4564 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4565 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4566 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4568 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4571 case R_PPC64_DTPREL64
:
4572 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4574 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4575 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4576 /* This is the second reloc of a dtpmod, dtprel pair.
4577 Don't mark with TLS_DTPREL. */
4581 sec
->has_tls_reloc
= 1;
4584 struct ppc_link_hash_entry
*eh
;
4585 eh
= (struct ppc_link_hash_entry
*) h
;
4586 eh
->tls_mask
|= tls_type
;
4589 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4590 rel
->r_addend
, tls_type
))
4593 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4595 /* One extra to simplify get_tls_mask. */
4596 bfd_size_type amt
= sec
->size
* sizeof (unsigned) / 8 + 1;
4597 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
4598 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4601 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4602 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
4604 /* Mark the second slot of a GD or LD entry.
4605 -1 to indicate GD and -2 to indicate LD. */
4606 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4607 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
4608 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4609 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
4612 case R_PPC64_TPREL16
:
4613 case R_PPC64_TPREL16_LO
:
4614 case R_PPC64_TPREL16_HI
:
4615 case R_PPC64_TPREL16_HA
:
4616 case R_PPC64_TPREL16_DS
:
4617 case R_PPC64_TPREL16_LO_DS
:
4618 case R_PPC64_TPREL16_HIGHER
:
4619 case R_PPC64_TPREL16_HIGHERA
:
4620 case R_PPC64_TPREL16_HIGHEST
:
4621 case R_PPC64_TPREL16_HIGHESTA
:
4624 info
->flags
|= DF_STATIC_TLS
;
4629 case R_PPC64_ADDR64
:
4630 if (opd_sym_map
!= NULL
4631 && rel
+ 1 < rel_end
4632 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
4636 if (h
->root
.root
.string
[0] == '.'
4637 && h
->root
.root
.string
[1] != 0
4638 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
4641 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
4647 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
4652 opd_sym_map
[rel
->r_offset
/ 8] = s
;
4660 case R_PPC64_ADDR14
:
4661 case R_PPC64_ADDR14_BRNTAKEN
:
4662 case R_PPC64_ADDR14_BRTAKEN
:
4663 case R_PPC64_ADDR16
:
4664 case R_PPC64_ADDR16_DS
:
4665 case R_PPC64_ADDR16_HA
:
4666 case R_PPC64_ADDR16_HI
:
4667 case R_PPC64_ADDR16_HIGHER
:
4668 case R_PPC64_ADDR16_HIGHERA
:
4669 case R_PPC64_ADDR16_HIGHEST
:
4670 case R_PPC64_ADDR16_HIGHESTA
:
4671 case R_PPC64_ADDR16_LO
:
4672 case R_PPC64_ADDR16_LO_DS
:
4673 case R_PPC64_ADDR24
:
4674 case R_PPC64_ADDR32
:
4675 case R_PPC64_UADDR16
:
4676 case R_PPC64_UADDR32
:
4677 case R_PPC64_UADDR64
:
4679 if (h
!= NULL
&& !info
->shared
)
4680 /* We may need a copy reloc. */
4683 /* Don't propagate .opd relocs. */
4684 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
4687 /* If we are creating a shared library, and this is a reloc
4688 against a global symbol, or a non PC relative reloc
4689 against a local symbol, then we need to copy the reloc
4690 into the shared library. However, if we are linking with
4691 -Bsymbolic, we do not need to copy a reloc against a
4692 global symbol which is defined in an object we are
4693 including in the link (i.e., DEF_REGULAR is set). At
4694 this point we have not seen all the input files, so it is
4695 possible that DEF_REGULAR is not set now but will be set
4696 later (it is never cleared). In case of a weak definition,
4697 DEF_REGULAR may be cleared later by a strong definition in
4698 a shared library. We account for that possibility below by
4699 storing information in the dyn_relocs field of the hash
4700 table entry. A similar situation occurs when creating
4701 shared libraries and symbol visibility changes render the
4704 If on the other hand, we are creating an executable, we
4705 may need to keep relocations for symbols satisfied by a
4706 dynamic library if we manage to avoid copy relocs for the
4710 && (MUST_BE_DYN_RELOC (r_type
)
4712 && (! info
->symbolic
4713 || h
->root
.type
== bfd_link_hash_defweak
4714 || !h
->def_regular
))))
4715 || (ELIMINATE_COPY_RELOCS
4718 && (h
->root
.type
== bfd_link_hash_defweak
4719 || !h
->def_regular
)))
4721 struct ppc_dyn_relocs
*p
;
4722 struct ppc_dyn_relocs
**head
;
4724 /* We must copy these reloc types into the output file.
4725 Create a reloc section in dynobj and make room for
4732 name
= (bfd_elf_string_from_elf_section
4734 elf_elfheader (abfd
)->e_shstrndx
,
4735 elf_section_data (sec
)->rel_hdr
.sh_name
));
4739 if (strncmp (name
, ".rela", 5) != 0
4740 || strcmp (bfd_get_section_name (abfd
, sec
),
4743 (*_bfd_error_handler
)
4744 (_("%B: bad relocation section name `%s\'"),
4746 bfd_set_error (bfd_error_bad_value
);
4749 dynobj
= htab
->elf
.dynobj
;
4750 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4755 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
4756 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
4757 | SEC_ALLOC
| SEC_LOAD
);
4758 sreloc
= bfd_make_section_with_flags (dynobj
,
4762 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
4765 elf_section_data (sec
)->sreloc
= sreloc
;
4768 /* If this is a global symbol, we count the number of
4769 relocations we need for this symbol. */
4772 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4776 /* Track dynamic relocs needed for local syms too.
4777 We really need local syms available to do this
4781 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4786 head
= ((struct ppc_dyn_relocs
**)
4787 &elf_section_data (s
)->local_dynrel
);
4791 if (p
== NULL
|| p
->sec
!= sec
)
4793 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4804 if (!MUST_BE_DYN_RELOC (r_type
))
4817 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4818 of the code entry point, and its section. */
4821 opd_entry_value (asection
*opd_sec
,
4823 asection
**code_sec
,
4826 bfd
*opd_bfd
= opd_sec
->owner
;
4827 Elf_Internal_Rela
*relocs
;
4828 Elf_Internal_Rela
*lo
, *hi
, *look
;
4831 /* No relocs implies we are linking a --just-symbols object. */
4832 if (opd_sec
->reloc_count
== 0)
4836 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
4837 return (bfd_vma
) -1;
4839 if (code_sec
!= NULL
)
4841 asection
*sec
, *likely
= NULL
;
4842 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4844 && (sec
->flags
& SEC_LOAD
) != 0
4845 && (sec
->flags
& SEC_ALLOC
) != 0)
4850 if (code_off
!= NULL
)
4851 *code_off
= val
- likely
->vma
;
4857 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
4859 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
4861 /* Go find the opd reloc at the sym address. */
4863 BFD_ASSERT (lo
!= NULL
);
4864 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
4868 look
= lo
+ (hi
- lo
) / 2;
4869 if (look
->r_offset
< offset
)
4871 else if (look
->r_offset
> offset
)
4875 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (opd_bfd
)->symtab_hdr
;
4876 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
4877 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
4879 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
4882 if (symndx
< symtab_hdr
->sh_info
)
4884 Elf_Internal_Sym
*sym
;
4886 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4889 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
4890 symtab_hdr
->sh_info
,
4891 0, NULL
, NULL
, NULL
);
4894 symtab_hdr
->contents
= (bfd_byte
*) sym
;
4898 val
= sym
->st_value
;
4900 if ((sym
->st_shndx
!= SHN_UNDEF
4901 && sym
->st_shndx
< SHN_LORESERVE
)
4902 || sym
->st_shndx
> SHN_HIRESERVE
)
4903 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
4904 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
4908 struct elf_link_hash_entry
**sym_hashes
;
4909 struct elf_link_hash_entry
*rh
;
4911 sym_hashes
= elf_sym_hashes (opd_bfd
);
4912 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
4913 while (rh
->root
.type
== bfd_link_hash_indirect
4914 || rh
->root
.type
== bfd_link_hash_warning
)
4915 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
4916 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
4917 || rh
->root
.type
== bfd_link_hash_defweak
);
4918 val
= rh
->root
.u
.def
.value
;
4919 sec
= rh
->root
.u
.def
.section
;
4921 val
+= look
->r_addend
;
4922 if (code_off
!= NULL
)
4924 if (code_sec
!= NULL
)
4926 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
4927 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
4936 /* Return the section that should be marked against GC for a given
4940 ppc64_elf_gc_mark_hook (asection
*sec
,
4941 struct bfd_link_info
*info
,
4942 Elf_Internal_Rela
*rel
,
4943 struct elf_link_hash_entry
*h
,
4944 Elf_Internal_Sym
*sym
)
4948 /* First mark all our entry sym sections. */
4949 if (info
->gc_sym_list
!= NULL
)
4951 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4952 struct bfd_sym_chain
*sym
= info
->gc_sym_list
;
4954 info
->gc_sym_list
= NULL
;
4957 struct ppc_link_hash_entry
*eh
;
4959 eh
= (struct ppc_link_hash_entry
*)
4960 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
4963 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
4964 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
4967 if (eh
->is_func_descriptor
4968 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
4969 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
4970 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4971 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4972 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4973 eh
->elf
.root
.u
.def
.value
,
4974 &rsec
, NULL
) != (bfd_vma
) -1)
4980 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4982 rsec
= eh
->elf
.root
.u
.def
.section
;
4984 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4988 while (sym
!= NULL
);
4991 /* Syms return NULL if we're marking .opd, so we avoid marking all
4992 function sections, as all functions are referenced in .opd. */
4994 if (get_opd_info (sec
) != NULL
)
4999 enum elf_ppc64_reloc_type r_type
;
5000 struct ppc_link_hash_entry
*eh
;
5002 r_type
= ELF64_R_TYPE (rel
->r_info
);
5005 case R_PPC64_GNU_VTINHERIT
:
5006 case R_PPC64_GNU_VTENTRY
:
5010 switch (h
->root
.type
)
5012 case bfd_link_hash_defined
:
5013 case bfd_link_hash_defweak
:
5014 eh
= (struct ppc_link_hash_entry
*) h
;
5016 && eh
->oh
->is_func_descriptor
5017 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5018 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5021 /* Function descriptor syms cause the associated
5022 function code sym section to be marked. */
5023 if (eh
->is_func_descriptor
5024 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5025 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5027 /* They also mark their opd section. */
5028 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
5029 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
5030 ppc64_elf_gc_mark_hook
);
5032 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
5034 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5035 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5036 eh
->elf
.root
.u
.def
.value
,
5037 &rsec
, NULL
) != (bfd_vma
) -1)
5039 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
5040 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
5041 ppc64_elf_gc_mark_hook
);
5044 rsec
= h
->root
.u
.def
.section
;
5047 case bfd_link_hash_common
:
5048 rsec
= h
->root
.u
.c
.p
->section
;
5058 asection
**opd_sym_section
;
5060 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5061 opd_sym_section
= get_opd_info (rsec
);
5062 if (opd_sym_section
!= NULL
)
5065 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
5067 rsec
= opd_sym_section
[(sym
->st_value
+ rel
->r_addend
) / 8];
5074 /* Update the .got, .plt. and dynamic reloc reference counts for the
5075 section being removed. */
5078 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5079 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5081 struct ppc_link_hash_table
*htab
;
5082 Elf_Internal_Shdr
*symtab_hdr
;
5083 struct elf_link_hash_entry
**sym_hashes
;
5084 struct got_entry
**local_got_ents
;
5085 const Elf_Internal_Rela
*rel
, *relend
;
5087 if ((sec
->flags
& SEC_ALLOC
) == 0)
5090 elf_section_data (sec
)->local_dynrel
= NULL
;
5092 htab
= ppc_hash_table (info
);
5093 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5094 sym_hashes
= elf_sym_hashes (abfd
);
5095 local_got_ents
= elf_local_got_ents (abfd
);
5097 relend
= relocs
+ sec
->reloc_count
;
5098 for (rel
= relocs
; rel
< relend
; rel
++)
5100 unsigned long r_symndx
;
5101 enum elf_ppc64_reloc_type r_type
;
5102 struct elf_link_hash_entry
*h
= NULL
;
5105 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5106 r_type
= ELF64_R_TYPE (rel
->r_info
);
5107 if (r_symndx
>= symtab_hdr
->sh_info
)
5109 struct ppc_link_hash_entry
*eh
;
5110 struct ppc_dyn_relocs
**pp
;
5111 struct ppc_dyn_relocs
*p
;
5113 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5114 while (h
->root
.type
== bfd_link_hash_indirect
5115 || h
->root
.type
== bfd_link_hash_warning
)
5116 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5117 eh
= (struct ppc_link_hash_entry
*) h
;
5119 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5122 /* Everything must go for SEC. */
5130 case R_PPC64_GOT_TLSLD16
:
5131 case R_PPC64_GOT_TLSLD16_LO
:
5132 case R_PPC64_GOT_TLSLD16_HI
:
5133 case R_PPC64_GOT_TLSLD16_HA
:
5134 ppc64_tlsld_got (abfd
)->refcount
-= 1;
5135 tls_type
= TLS_TLS
| TLS_LD
;
5138 case R_PPC64_GOT_TLSGD16
:
5139 case R_PPC64_GOT_TLSGD16_LO
:
5140 case R_PPC64_GOT_TLSGD16_HI
:
5141 case R_PPC64_GOT_TLSGD16_HA
:
5142 tls_type
= TLS_TLS
| TLS_GD
;
5145 case R_PPC64_GOT_TPREL16_DS
:
5146 case R_PPC64_GOT_TPREL16_LO_DS
:
5147 case R_PPC64_GOT_TPREL16_HI
:
5148 case R_PPC64_GOT_TPREL16_HA
:
5149 tls_type
= TLS_TLS
| TLS_TPREL
;
5152 case R_PPC64_GOT_DTPREL16_DS
:
5153 case R_PPC64_GOT_DTPREL16_LO_DS
:
5154 case R_PPC64_GOT_DTPREL16_HI
:
5155 case R_PPC64_GOT_DTPREL16_HA
:
5156 tls_type
= TLS_TLS
| TLS_DTPREL
;
5160 case R_PPC64_GOT16_DS
:
5161 case R_PPC64_GOT16_HA
:
5162 case R_PPC64_GOT16_HI
:
5163 case R_PPC64_GOT16_LO
:
5164 case R_PPC64_GOT16_LO_DS
:
5167 struct got_entry
*ent
;
5172 ent
= local_got_ents
[r_symndx
];
5174 for (; ent
!= NULL
; ent
= ent
->next
)
5175 if (ent
->addend
== rel
->r_addend
5176 && ent
->owner
== abfd
5177 && ent
->tls_type
== tls_type
)
5181 if (ent
->got
.refcount
> 0)
5182 ent
->got
.refcount
-= 1;
5186 case R_PPC64_PLT16_HA
:
5187 case R_PPC64_PLT16_HI
:
5188 case R_PPC64_PLT16_LO
:
5192 case R_PPC64_REL14_BRNTAKEN
:
5193 case R_PPC64_REL14_BRTAKEN
:
5197 struct plt_entry
*ent
;
5199 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5200 if (ent
->addend
== rel
->r_addend
)
5204 if (ent
->plt
.refcount
> 0)
5205 ent
->plt
.refcount
-= 1;
5216 /* The maximum size of .sfpr. */
5217 #define SFPR_MAX (218*4)
5219 struct sfpr_def_parms
5221 const char name
[12];
5222 unsigned char lo
, hi
;
5223 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5224 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5227 /* Auto-generate _save*, _rest* functions in .sfpr. */
5230 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5232 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5234 size_t len
= strlen (parm
->name
);
5235 bfd_boolean writing
= FALSE
;
5238 memcpy (sym
, parm
->name
, len
);
5241 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5243 struct elf_link_hash_entry
*h
;
5245 sym
[len
+ 0] = i
/ 10 + '0';
5246 sym
[len
+ 1] = i
% 10 + '0';
5247 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5251 h
->root
.type
= bfd_link_hash_defined
;
5252 h
->root
.u
.def
.section
= htab
->sfpr
;
5253 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5256 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5258 if (htab
->sfpr
->contents
== NULL
)
5260 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5261 if (htab
->sfpr
->contents
== NULL
)
5267 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5269 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5271 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5272 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5280 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5282 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5287 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5289 p
= savegpr0 (abfd
, p
, r
);
5290 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5292 bfd_put_32 (abfd
, BLR
, p
);
5297 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5299 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5304 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5306 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5308 p
= restgpr0 (abfd
, p
, r
);
5309 bfd_put_32 (abfd
, MTLR_R0
, p
);
5313 p
= restgpr0 (abfd
, p
, 30);
5314 p
= restgpr0 (abfd
, p
, 31);
5316 bfd_put_32 (abfd
, BLR
, p
);
5321 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5323 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5328 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5330 p
= savegpr1 (abfd
, p
, r
);
5331 bfd_put_32 (abfd
, BLR
, p
);
5336 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5338 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5343 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5345 p
= restgpr1 (abfd
, p
, r
);
5346 bfd_put_32 (abfd
, BLR
, p
);
5351 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5353 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5358 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5360 p
= savefpr (abfd
, p
, r
);
5361 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5363 bfd_put_32 (abfd
, BLR
, p
);
5368 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5370 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5375 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5377 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5379 p
= restfpr (abfd
, p
, r
);
5380 bfd_put_32 (abfd
, MTLR_R0
, p
);
5384 p
= restfpr (abfd
, p
, 30);
5385 p
= restfpr (abfd
, p
, 31);
5387 bfd_put_32 (abfd
, BLR
, p
);
5392 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5394 p
= savefpr (abfd
, p
, r
);
5395 bfd_put_32 (abfd
, BLR
, p
);
5400 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5402 p
= restfpr (abfd
, p
, r
);
5403 bfd_put_32 (abfd
, BLR
, p
);
5408 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5410 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5412 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5417 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5419 p
= savevr (abfd
, p
, r
);
5420 bfd_put_32 (abfd
, BLR
, p
);
5425 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5427 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5429 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5434 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5436 p
= restvr (abfd
, p
, r
);
5437 bfd_put_32 (abfd
, BLR
, p
);
5441 /* Called via elf_link_hash_traverse to transfer dynamic linking
5442 information on function code symbol entries to their corresponding
5443 function descriptor symbol entries. */
5446 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5448 struct bfd_link_info
*info
;
5449 struct ppc_link_hash_table
*htab
;
5450 struct plt_entry
*ent
;
5451 struct ppc_link_hash_entry
*fh
;
5452 struct ppc_link_hash_entry
*fdh
;
5453 bfd_boolean force_local
;
5455 fh
= (struct ppc_link_hash_entry
*) h
;
5456 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5459 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5460 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5463 htab
= ppc_hash_table (info
);
5465 /* Resolve undefined references to dot-symbols as the value
5466 in the function descriptor, if we have one in a regular object.
5467 This is to satisfy cases like ".quad .foo". Calls to functions
5468 in dynamic objects are handled elsewhere. */
5469 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5470 && fh
->was_undefined
5471 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5472 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5473 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5474 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5475 fh
->oh
->elf
.root
.u
.def
.value
,
5476 &fh
->elf
.root
.u
.def
.section
,
5477 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5479 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5480 fh
->elf
.forced_local
= 1;
5483 /* If this is a function code symbol, transfer dynamic linking
5484 information to the function descriptor symbol. */
5488 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5489 if (ent
->plt
.refcount
> 0)
5492 || fh
->elf
.root
.root
.string
[0] != '.'
5493 || fh
->elf
.root
.root
.string
[1] == '\0')
5496 /* Find the corresponding function descriptor symbol. Create it
5497 as undefined if necessary. */
5499 fdh
= get_fdh (fh
, htab
);
5501 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5502 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5503 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5507 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5508 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5510 fdh
= make_fdh (info
, fh
);
5515 /* Fake function descriptors are made undefweak. If the function
5516 code symbol is strong undefined, make the fake sym the same.
5517 If the function code symbol is defined, then force the fake
5518 descriptor local; We can't support overriding of symbols in a
5519 shared library on a fake descriptor. */
5523 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5525 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
5527 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
5528 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
5530 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
5531 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5533 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
5538 && !fdh
->elf
.forced_local
5540 || fdh
->elf
.def_dynamic
5541 || fdh
->elf
.ref_dynamic
5542 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5543 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5545 if (fdh
->elf
.dynindx
== -1)
5546 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5548 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
5549 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
5550 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
5551 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
5552 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5554 move_plt_plist (fh
, fdh
);
5555 fdh
->elf
.needs_plt
= 1;
5557 fdh
->is_func_descriptor
= 1;
5562 /* Now that the info is on the function descriptor, clear the
5563 function code sym info. Any function code syms for which we
5564 don't have a definition in a regular file, we force local.
5565 This prevents a shared library from exporting syms that have
5566 been imported from another library. Function code syms that
5567 are really in the library we must leave global to prevent the
5568 linker dragging in a definition from a static library. */
5569 force_local
= (!fh
->elf
.def_regular
5571 || !fdh
->elf
.def_regular
5572 || fdh
->elf
.forced_local
);
5573 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5578 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5579 this hook to a) provide some gcc support functions, and b) transfer
5580 dynamic linking information gathered so far on function code symbol
5581 entries, to their corresponding function descriptor symbol entries. */
5584 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5585 struct bfd_link_info
*info
)
5587 struct ppc_link_hash_table
*htab
;
5589 const struct sfpr_def_parms funcs
[] =
5591 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5592 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5593 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5594 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5595 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5596 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5597 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5598 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
5599 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
5600 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
5601 { "_savevr_", 20, 31, savevr
, savevr_tail
},
5602 { "_restvr_", 20, 31, restvr
, restvr_tail
}
5605 htab
= ppc_hash_table (info
);
5606 if (htab
->sfpr
== NULL
)
5607 /* We don't have any relocs. */
5610 /* Provide any missing _save* and _rest* functions. */
5611 htab
->sfpr
->size
= 0;
5612 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
5613 if (!sfpr_define (info
, &funcs
[i
]))
5616 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
5618 if (htab
->sfpr
->size
== 0)
5619 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
5624 /* Adjust a symbol defined by a dynamic object and referenced by a
5625 regular object. The current definition is in some section of the
5626 dynamic object, but we're not including those sections. We have to
5627 change the definition to something the rest of the link can
5631 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5632 struct elf_link_hash_entry
*h
)
5634 struct ppc_link_hash_table
*htab
;
5636 unsigned int power_of_two
;
5638 htab
= ppc_hash_table (info
);
5640 /* Deal with function syms. */
5641 if (h
->type
== STT_FUNC
5644 /* Clear procedure linkage table information for any symbol that
5645 won't need a .plt entry. */
5646 struct plt_entry
*ent
;
5647 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5648 if (ent
->plt
.refcount
> 0)
5651 || SYMBOL_CALLS_LOCAL (info
, h
)
5652 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5653 && h
->root
.type
== bfd_link_hash_undefweak
))
5655 h
->plt
.plist
= NULL
;
5660 h
->plt
.plist
= NULL
;
5662 /* If this is a weak symbol, and there is a real definition, the
5663 processor independent code will have arranged for us to see the
5664 real definition first, and we can just use the same value. */
5665 if (h
->u
.weakdef
!= NULL
)
5667 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5668 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5669 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5670 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5671 if (ELIMINATE_COPY_RELOCS
)
5672 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5676 /* If we are creating a shared library, we must presume that the
5677 only references to the symbol are via the global offset table.
5678 For such cases we need not do anything here; the relocations will
5679 be handled correctly by relocate_section. */
5683 /* If there are no references to this symbol that do not use the
5684 GOT, we don't need to generate a copy reloc. */
5685 if (!h
->non_got_ref
)
5688 if (ELIMINATE_COPY_RELOCS
)
5690 struct ppc_link_hash_entry
* eh
;
5691 struct ppc_dyn_relocs
*p
;
5693 eh
= (struct ppc_link_hash_entry
*) h
;
5694 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5696 s
= p
->sec
->output_section
;
5697 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5701 /* If we didn't find any dynamic relocs in read-only sections, then
5702 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5710 if (h
->plt
.plist
!= NULL
)
5712 /* We should never get here, but unfortunately there are versions
5713 of gcc out there that improperly (for this ABI) put initialized
5714 function pointers, vtable refs and suchlike in read-only
5715 sections. Allow them to proceed, but warn that this might
5716 break at runtime. */
5717 (*_bfd_error_handler
)
5718 (_("copy reloc against `%s' requires lazy plt linking; "
5719 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5720 h
->root
.root
.string
);
5723 /* This is a reference to a symbol defined by a dynamic object which
5724 is not a function. */
5726 /* We must allocate the symbol in our .dynbss section, which will
5727 become part of the .bss section of the executable. There will be
5728 an entry for this symbol in the .dynsym section. The dynamic
5729 object will contain position independent code, so all references
5730 from the dynamic object to this symbol will go through the global
5731 offset table. The dynamic linker will use the .dynsym entry to
5732 determine the address it must put in the global offset table, so
5733 both the dynamic object and the regular object will refer to the
5734 same memory location for the variable. */
5736 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5737 to copy the initial value out of the dynamic object and into the
5738 runtime process image. We need to remember the offset into the
5739 .rela.bss section we are going to use. */
5740 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5742 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
5746 /* We need to figure out the alignment required for this symbol. I
5747 have no idea how ELF linkers handle this. */
5748 power_of_two
= bfd_log2 (h
->size
);
5749 if (power_of_two
> 4)
5752 /* Apply the required alignment. */
5754 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5755 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
5757 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
5761 /* Define the symbol as being at this point in the section. */
5762 h
->root
.u
.def
.section
= s
;
5763 h
->root
.u
.def
.value
= s
->size
;
5765 /* Increment the section size to make room for the symbol. */
5771 /* If given a function descriptor symbol, hide both the function code
5772 sym and the descriptor. */
5774 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
5775 struct elf_link_hash_entry
*h
,
5776 bfd_boolean force_local
)
5778 struct ppc_link_hash_entry
*eh
;
5779 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
5781 eh
= (struct ppc_link_hash_entry
*) h
;
5782 if (eh
->is_func_descriptor
)
5784 struct ppc_link_hash_entry
*fh
= eh
->oh
;
5789 struct ppc_link_hash_table
*htab
;
5792 /* We aren't supposed to use alloca in BFD because on
5793 systems which do not have alloca the version in libiberty
5794 calls xmalloc, which might cause the program to crash
5795 when it runs out of memory. This function doesn't have a
5796 return status, so there's no way to gracefully return an
5797 error. So cheat. We know that string[-1] can be safely
5798 accessed; It's either a string in an ELF string table,
5799 or allocated in an objalloc structure. */
5801 p
= eh
->elf
.root
.root
.string
- 1;
5804 htab
= ppc_hash_table (info
);
5805 fh
= (struct ppc_link_hash_entry
*)
5806 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5809 /* Unfortunately, if it so happens that the string we were
5810 looking for was allocated immediately before this string,
5811 then we overwrote the string terminator. That's the only
5812 reason the lookup should fail. */
5815 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
5816 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
5818 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
5819 fh
= (struct ppc_link_hash_entry
*)
5820 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5829 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5834 get_sym_h (struct elf_link_hash_entry
**hp
,
5835 Elf_Internal_Sym
**symp
,
5838 Elf_Internal_Sym
**locsymsp
,
5839 unsigned long r_symndx
,
5842 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5844 if (r_symndx
>= symtab_hdr
->sh_info
)
5846 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5847 struct elf_link_hash_entry
*h
;
5849 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5850 while (h
->root
.type
== bfd_link_hash_indirect
5851 || h
->root
.type
== bfd_link_hash_warning
)
5852 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5860 if (symsecp
!= NULL
)
5862 asection
*symsec
= NULL
;
5863 if (h
->root
.type
== bfd_link_hash_defined
5864 || h
->root
.type
== bfd_link_hash_defweak
)
5865 symsec
= h
->root
.u
.def
.section
;
5869 if (tls_maskp
!= NULL
)
5871 struct ppc_link_hash_entry
*eh
;
5873 eh
= (struct ppc_link_hash_entry
*) h
;
5874 *tls_maskp
= &eh
->tls_mask
;
5879 Elf_Internal_Sym
*sym
;
5880 Elf_Internal_Sym
*locsyms
= *locsymsp
;
5882 if (locsyms
== NULL
)
5884 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5885 if (locsyms
== NULL
)
5886 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5887 symtab_hdr
->sh_info
,
5888 0, NULL
, NULL
, NULL
);
5889 if (locsyms
== NULL
)
5891 *locsymsp
= locsyms
;
5893 sym
= locsyms
+ r_symndx
;
5901 if (symsecp
!= NULL
)
5903 asection
*symsec
= NULL
;
5904 if ((sym
->st_shndx
!= SHN_UNDEF
5905 && sym
->st_shndx
< SHN_LORESERVE
)
5906 || sym
->st_shndx
> SHN_HIRESERVE
)
5907 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
5911 if (tls_maskp
!= NULL
)
5913 struct got_entry
**lgot_ents
;
5917 lgot_ents
= elf_local_got_ents (ibfd
);
5918 if (lgot_ents
!= NULL
)
5920 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
5921 tls_mask
= &lgot_masks
[r_symndx
];
5923 *tls_maskp
= tls_mask
;
5929 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5930 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5931 type suitable for optimization, and 1 otherwise. */
5934 get_tls_mask (char **tls_maskp
, unsigned long *toc_symndx
,
5935 Elf_Internal_Sym
**locsymsp
,
5936 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
5938 unsigned long r_symndx
;
5940 struct elf_link_hash_entry
*h
;
5941 Elf_Internal_Sym
*sym
;
5945 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5946 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5949 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
5951 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
5954 /* Look inside a TOC section too. */
5957 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
5958 off
= h
->root
.u
.def
.value
;
5961 off
= sym
->st_value
;
5962 off
+= rel
->r_addend
;
5963 BFD_ASSERT (off
% 8 == 0);
5964 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
5965 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
5966 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5968 if (toc_symndx
!= NULL
)
5969 *toc_symndx
= r_symndx
;
5971 || ((h
->root
.type
== bfd_link_hash_defined
5972 || h
->root
.type
== bfd_link_hash_defweak
)
5973 && !h
->def_dynamic
))
5974 && (next_r
== -1 || next_r
== -2))
5979 /* Adjust all global syms defined in opd sections. In gcc generated
5980 code for the old ABI, these will already have been done. */
5983 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
5985 struct ppc_link_hash_entry
*eh
;
5989 if (h
->root
.type
== bfd_link_hash_indirect
)
5992 if (h
->root
.type
== bfd_link_hash_warning
)
5993 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5995 if (h
->root
.type
!= bfd_link_hash_defined
5996 && h
->root
.type
!= bfd_link_hash_defweak
)
5999 eh
= (struct ppc_link_hash_entry
*) h
;
6000 if (eh
->adjust_done
)
6003 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6004 opd_adjust
= get_opd_info (sym_sec
);
6005 if (opd_adjust
!= NULL
)
6007 long adjust
= opd_adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6010 /* This entry has been deleted. */
6011 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->u
.deleted_section
;
6014 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6015 if (elf_discarded_section (dsec
))
6017 ppc64_elf_tdata (sym_sec
->owner
)->u
.deleted_section
= dsec
;
6021 eh
->elf
.root
.u
.def
.value
= 0;
6022 eh
->elf
.root
.u
.def
.section
= dsec
;
6025 eh
->elf
.root
.u
.def
.value
+= adjust
;
6026 eh
->adjust_done
= 1;
6031 /* Handles decrementing dynamic reloc counts for the reloc specified by
6032 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6033 have already been determined. */
6036 dec_dynrel_count (bfd_vma r_info
,
6038 struct bfd_link_info
*info
,
6039 Elf_Internal_Sym
**local_syms
,
6040 struct elf_link_hash_entry
*h
,
6043 enum elf_ppc64_reloc_type r_type
;
6044 struct ppc_dyn_relocs
*p
;
6045 struct ppc_dyn_relocs
**pp
;
6047 /* Can this reloc be dynamic? This switch, and later tests here
6048 should be kept in sync with the code in check_relocs. */
6049 r_type
= ELF64_R_TYPE (r_info
);
6055 case R_PPC64_TPREL16
:
6056 case R_PPC64_TPREL16_LO
:
6057 case R_PPC64_TPREL16_HI
:
6058 case R_PPC64_TPREL16_HA
:
6059 case R_PPC64_TPREL16_DS
:
6060 case R_PPC64_TPREL16_LO_DS
:
6061 case R_PPC64_TPREL16_HIGHER
:
6062 case R_PPC64_TPREL16_HIGHERA
:
6063 case R_PPC64_TPREL16_HIGHEST
:
6064 case R_PPC64_TPREL16_HIGHESTA
:
6068 case R_PPC64_TPREL64
:
6069 case R_PPC64_DTPMOD64
:
6070 case R_PPC64_DTPREL64
:
6071 case R_PPC64_ADDR64
:
6075 case R_PPC64_ADDR14
:
6076 case R_PPC64_ADDR14_BRNTAKEN
:
6077 case R_PPC64_ADDR14_BRTAKEN
:
6078 case R_PPC64_ADDR16
:
6079 case R_PPC64_ADDR16_DS
:
6080 case R_PPC64_ADDR16_HA
:
6081 case R_PPC64_ADDR16_HI
:
6082 case R_PPC64_ADDR16_HIGHER
:
6083 case R_PPC64_ADDR16_HIGHERA
:
6084 case R_PPC64_ADDR16_HIGHEST
:
6085 case R_PPC64_ADDR16_HIGHESTA
:
6086 case R_PPC64_ADDR16_LO
:
6087 case R_PPC64_ADDR16_LO_DS
:
6088 case R_PPC64_ADDR24
:
6089 case R_PPC64_ADDR32
:
6090 case R_PPC64_UADDR16
:
6091 case R_PPC64_UADDR32
:
6092 case R_PPC64_UADDR64
:
6097 if (local_syms
!= NULL
)
6099 unsigned long r_symndx
;
6100 Elf_Internal_Sym
*sym
;
6101 bfd
*ibfd
= sec
->owner
;
6103 r_symndx
= ELF64_R_SYM (r_info
);
6104 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6109 && (MUST_BE_DYN_RELOC (r_type
)
6112 || h
->root
.type
== bfd_link_hash_defweak
6113 || !h
->def_regular
))))
6114 || (ELIMINATE_COPY_RELOCS
6117 && (h
->root
.type
== bfd_link_hash_defweak
6118 || !h
->def_regular
)))
6124 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6125 else if (sym_sec
!= NULL
)
6126 pp
= (struct ppc_dyn_relocs
**) &elf_section_data (sym_sec
)->local_dynrel
;
6128 pp
= (struct ppc_dyn_relocs
**) &elf_section_data (sec
)->local_dynrel
;
6130 while ((p
= *pp
) != NULL
)
6134 if (!MUST_BE_DYN_RELOC (r_type
))
6144 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6146 bfd_set_error (bfd_error_bad_value
);
6150 /* Remove unused Official Procedure Descriptor entries. Currently we
6151 only remove those associated with functions in discarded link-once
6152 sections, or weakly defined functions that have been overridden. It
6153 would be possible to remove many more entries for statically linked
6157 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
6158 bfd_boolean no_opd_opt
,
6159 bfd_boolean non_overlapping
)
6162 bfd_boolean some_edited
= FALSE
;
6163 asection
*need_pad
= NULL
;
6165 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6168 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6169 Elf_Internal_Shdr
*symtab_hdr
;
6170 Elf_Internal_Sym
*local_syms
;
6171 struct elf_link_hash_entry
**sym_hashes
;
6175 bfd_boolean need_edit
, add_aux_fields
;
6176 bfd_size_type cnt_16b
= 0;
6178 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6179 if (sec
== NULL
|| sec
->size
== 0)
6182 amt
= sec
->size
* sizeof (long) / 8;
6183 opd_adjust
= get_opd_info (sec
);
6184 if (opd_adjust
== NULL
)
6186 /* check_relocs hasn't been called. Must be a ld -r link
6187 or --just-symbols object. */
6188 opd_adjust
= bfd_alloc (obfd
, amt
);
6189 if (opd_adjust
== NULL
)
6191 ppc64_elf_section_data (sec
)->opd
.adjust
= opd_adjust
;
6193 memset (opd_adjust
, 0, amt
);
6198 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6201 if (sec
->output_section
== bfd_abs_section_ptr
)
6204 /* Look through the section relocs. */
6205 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6209 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6210 sym_hashes
= elf_sym_hashes (ibfd
);
6212 /* Read the relocations. */
6213 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6215 if (relstart
== NULL
)
6218 /* First run through the relocs to check they are sane, and to
6219 determine whether we need to edit this opd section. */
6223 relend
= relstart
+ sec
->reloc_count
;
6224 for (rel
= relstart
; rel
< relend
; )
6226 enum elf_ppc64_reloc_type r_type
;
6227 unsigned long r_symndx
;
6229 struct elf_link_hash_entry
*h
;
6230 Elf_Internal_Sym
*sym
;
6232 /* .opd contains a regular array of 16 or 24 byte entries. We're
6233 only interested in the reloc pointing to a function entry
6235 if (rel
->r_offset
!= offset
6236 || rel
+ 1 >= relend
6237 || (rel
+ 1)->r_offset
!= offset
+ 8)
6239 /* If someone messes with .opd alignment then after a
6240 "ld -r" we might have padding in the middle of .opd.
6241 Also, there's nothing to prevent someone putting
6242 something silly in .opd with the assembler. No .opd
6243 optimization for them! */
6245 (*_bfd_error_handler
)
6246 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6251 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6252 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6254 (*_bfd_error_handler
)
6255 (_("%B: unexpected reloc type %u in .opd section"),
6261 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6262 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6266 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6268 const char *sym_name
;
6270 sym_name
= h
->root
.root
.string
;
6272 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
6275 (*_bfd_error_handler
)
6276 (_("%B: undefined sym `%s' in .opd section"),
6282 /* opd entries are always for functions defined in the
6283 current input bfd. If the symbol isn't defined in the
6284 input bfd, then we won't be using the function in this
6285 bfd; It must be defined in a linkonce section in another
6286 bfd, or is weak. It's also possible that we are
6287 discarding the function due to a linker script /DISCARD/,
6288 which we test for via the output_section. */
6289 if (sym_sec
->owner
!= ibfd
6290 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6295 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6297 if (sec
->size
== offset
+ 24)
6302 if (rel
== relend
&& sec
->size
== offset
+ 16)
6310 if (rel
->r_offset
== offset
+ 24)
6312 else if (rel
->r_offset
!= offset
+ 16)
6314 else if (rel
+ 1 < relend
6315 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6316 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6321 else if (rel
+ 2 < relend
6322 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6323 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6332 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6334 if (need_edit
|| add_aux_fields
)
6336 Elf_Internal_Rela
*write_rel
;
6337 bfd_byte
*rptr
, *wptr
;
6338 bfd_byte
*new_contents
= NULL
;
6342 /* This seems a waste of time as input .opd sections are all
6343 zeros as generated by gcc, but I suppose there's no reason
6344 this will always be so. We might start putting something in
6345 the third word of .opd entries. */
6346 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6349 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6354 if (local_syms
!= NULL
6355 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6357 if (elf_section_data (sec
)->relocs
!= relstart
)
6361 sec
->contents
= loc
;
6362 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6365 elf_section_data (sec
)->relocs
= relstart
;
6367 new_contents
= sec
->contents
;
6370 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6371 if (new_contents
== NULL
)
6375 wptr
= new_contents
;
6376 rptr
= sec
->contents
;
6378 write_rel
= relstart
;
6382 for (rel
= relstart
; rel
< relend
; rel
++)
6384 unsigned long r_symndx
;
6386 struct elf_link_hash_entry
*h
;
6387 Elf_Internal_Sym
*sym
;
6389 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6390 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6394 if (rel
->r_offset
== offset
)
6396 struct ppc_link_hash_entry
*fdh
= NULL
;
6398 /* See if the .opd entry is full 24 byte or
6399 16 byte (with fd_aux entry overlapped with next
6402 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6403 || (rel
+ 3 < relend
6404 && rel
[2].r_offset
== offset
+ 16
6405 && rel
[3].r_offset
== offset
+ 24
6406 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6407 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6411 && h
->root
.root
.string
[0] == '.')
6413 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6414 ppc_hash_table (info
));
6416 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
6417 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6421 skip
= (sym_sec
->owner
!= ibfd
6422 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6425 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6427 /* Arrange for the function descriptor sym
6429 fdh
->elf
.root
.u
.def
.value
= 0;
6430 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6432 opd_adjust
[rel
->r_offset
/ 8] = -1;
6436 /* We'll be keeping this opd entry. */
6440 /* Redefine the function descriptor symbol to
6441 this location in the opd section. It is
6442 necessary to update the value here rather
6443 than using an array of adjustments as we do
6444 for local symbols, because various places
6445 in the generic ELF code use the value
6446 stored in u.def.value. */
6447 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6448 fdh
->adjust_done
= 1;
6451 /* Local syms are a bit tricky. We could
6452 tweak them as they can be cached, but
6453 we'd need to look through the local syms
6454 for the function descriptor sym which we
6455 don't have at the moment. So keep an
6456 array of adjustments. */
6457 opd_adjust
[rel
->r_offset
/ 8]
6458 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6461 memcpy (wptr
, rptr
, opd_ent_size
);
6462 wptr
+= opd_ent_size
;
6463 if (add_aux_fields
&& opd_ent_size
== 16)
6465 memset (wptr
, '\0', 8);
6469 rptr
+= opd_ent_size
;
6470 offset
+= opd_ent_size
;
6475 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
6481 /* We need to adjust any reloc offsets to point to the
6482 new opd entries. While we're at it, we may as well
6483 remove redundant relocs. */
6484 rel
->r_offset
+= opd_adjust
[(offset
- opd_ent_size
) / 8];
6485 if (write_rel
!= rel
)
6486 memcpy (write_rel
, rel
, sizeof (*rel
));
6491 sec
->size
= wptr
- new_contents
;
6492 sec
->reloc_count
= write_rel
- relstart
;
6495 free (sec
->contents
);
6496 sec
->contents
= new_contents
;
6499 /* Fudge the size too, as this is used later in
6500 elf_bfd_final_link if we are emitting relocs. */
6501 elf_section_data (sec
)->rel_hdr
.sh_size
6502 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6503 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6506 else if (elf_section_data (sec
)->relocs
!= relstart
)
6509 if (local_syms
!= NULL
6510 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6512 if (!info
->keep_memory
)
6515 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6520 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6522 /* If we are doing a final link and the last .opd entry is just 16 byte
6523 long, add a 8 byte padding after it. */
6524 if (need_pad
!= NULL
&& !info
->relocatable
)
6528 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6530 BFD_ASSERT (need_pad
->size
> 0);
6532 p
= bfd_malloc (need_pad
->size
+ 8);
6536 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6537 p
, 0, need_pad
->size
))
6540 need_pad
->contents
= p
;
6541 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6545 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6549 need_pad
->contents
= p
;
6552 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6553 need_pad
->size
+= 8;
6559 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6562 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6564 struct ppc_link_hash_table
*htab
;
6566 htab
= ppc_hash_table (info
);
6567 if (htab
->tls_get_addr
!= NULL
)
6569 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr
;
6571 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6572 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6573 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6575 htab
->tls_get_addr
= h
;
6577 if (htab
->tls_get_addr_fd
== NULL
6579 && h
->oh
->is_func_descriptor
6580 && (h
->oh
->elf
.root
.type
== bfd_link_hash_defined
6581 || h
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
6582 htab
->tls_get_addr_fd
= h
->oh
;
6585 if (htab
->tls_get_addr_fd
!= NULL
)
6587 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr_fd
;
6589 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6590 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6591 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6593 htab
->tls_get_addr_fd
= h
;
6596 return _bfd_elf_tls_setup (obfd
, info
);
6599 /* Run through all the TLS relocs looking for optimization
6600 opportunities. The linker has been hacked (see ppc64elf.em) to do
6601 a preliminary section layout so that we know the TLS segment
6602 offsets. We can't optimize earlier because some optimizations need
6603 to know the tp offset, and we need to optimize before allocating
6604 dynamic relocations. */
6607 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6611 struct ppc_link_hash_table
*htab
;
6613 if (info
->relocatable
|| info
->shared
)
6616 htab
= ppc_hash_table (info
);
6617 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6619 Elf_Internal_Sym
*locsyms
= NULL
;
6621 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6622 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
6624 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6625 int expecting_tls_get_addr
;
6627 /* Read the relocations. */
6628 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6630 if (relstart
== NULL
)
6633 expecting_tls_get_addr
= 0;
6634 relend
= relstart
+ sec
->reloc_count
;
6635 for (rel
= relstart
; rel
< relend
; rel
++)
6637 enum elf_ppc64_reloc_type r_type
;
6638 unsigned long r_symndx
;
6639 struct elf_link_hash_entry
*h
;
6640 Elf_Internal_Sym
*sym
;
6643 char tls_set
, tls_clear
, tls_type
= 0;
6645 bfd_boolean ok_tprel
, is_local
;
6647 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6648 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
6652 if (elf_section_data (sec
)->relocs
!= relstart
)
6655 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6656 != (unsigned char *) locsyms
))
6663 if (h
->root
.type
!= bfd_link_hash_defined
6664 && h
->root
.type
!= bfd_link_hash_defweak
)
6666 value
= h
->root
.u
.def
.value
;
6669 /* Symbols referenced by TLS relocs must be of type
6670 STT_TLS. So no need for .opd local sym adjust. */
6671 value
= sym
->st_value
;
6679 value
+= sym_sec
->output_offset
;
6680 value
+= sym_sec
->output_section
->vma
;
6681 value
-= htab
->elf
.tls_sec
->vma
;
6682 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
6683 < (bfd_vma
) 1 << 32);
6686 r_type
= ELF64_R_TYPE (rel
->r_info
);
6689 case R_PPC64_GOT_TLSLD16
:
6690 case R_PPC64_GOT_TLSLD16_LO
:
6691 case R_PPC64_GOT_TLSLD16_HI
:
6692 case R_PPC64_GOT_TLSLD16_HA
:
6693 /* These relocs should never be against a symbol
6694 defined in a shared lib. Leave them alone if
6695 that turns out to be the case. */
6696 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
6703 tls_type
= TLS_TLS
| TLS_LD
;
6704 expecting_tls_get_addr
= 1;
6707 case R_PPC64_GOT_TLSGD16
:
6708 case R_PPC64_GOT_TLSGD16_LO
:
6709 case R_PPC64_GOT_TLSGD16_HI
:
6710 case R_PPC64_GOT_TLSGD16_HA
:
6716 tls_set
= TLS_TLS
| TLS_TPRELGD
;
6718 tls_type
= TLS_TLS
| TLS_GD
;
6719 expecting_tls_get_addr
= 1;
6722 case R_PPC64_GOT_TPREL16_DS
:
6723 case R_PPC64_GOT_TPREL16_LO_DS
:
6724 case R_PPC64_GOT_TPREL16_HI
:
6725 case R_PPC64_GOT_TPREL16_HA
:
6726 expecting_tls_get_addr
= 0;
6731 tls_clear
= TLS_TPREL
;
6732 tls_type
= TLS_TLS
| TLS_TPREL
;
6739 case R_PPC64_REL14_BRTAKEN
:
6740 case R_PPC64_REL14_BRNTAKEN
:
6743 && (h
== &htab
->tls_get_addr
->elf
6744 || h
== &htab
->tls_get_addr_fd
->elf
))
6746 if (!expecting_tls_get_addr
6748 && ((ELF64_R_TYPE (rel
[-1].r_info
)
6750 || (ELF64_R_TYPE (rel
[-1].r_info
)
6751 == R_PPC64_TOC16_LO
)))
6753 /* Check for toc tls entries. */
6757 retval
= get_tls_mask (&toc_tls
, NULL
, &locsyms
,
6761 if (toc_tls
!= NULL
)
6762 expecting_tls_get_addr
= retval
> 1;
6765 if (expecting_tls_get_addr
)
6767 struct plt_entry
*ent
;
6768 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
6769 if (ent
->addend
== 0)
6771 if (ent
->plt
.refcount
> 0)
6772 ent
->plt
.refcount
-= 1;
6777 expecting_tls_get_addr
= 0;
6780 case R_PPC64_TPREL64
:
6781 expecting_tls_get_addr
= 0;
6785 tls_set
= TLS_EXPLICIT
;
6786 tls_clear
= TLS_TPREL
;
6792 case R_PPC64_DTPMOD64
:
6793 expecting_tls_get_addr
= 0;
6794 if (rel
+ 1 < relend
6796 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
6797 && rel
[1].r_offset
== rel
->r_offset
+ 8)
6801 tls_set
= TLS_EXPLICIT
| TLS_GD
;
6804 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
6813 tls_set
= TLS_EXPLICIT
;
6819 expecting_tls_get_addr
= 0;
6823 if ((tls_set
& TLS_EXPLICIT
) == 0)
6825 struct got_entry
*ent
;
6827 /* Adjust got entry for this reloc. */
6831 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
6833 for (; ent
!= NULL
; ent
= ent
->next
)
6834 if (ent
->addend
== rel
->r_addend
6835 && ent
->owner
== ibfd
6836 && ent
->tls_type
== tls_type
)
6843 /* We managed to get rid of a got entry. */
6844 if (ent
->got
.refcount
> 0)
6845 ent
->got
.refcount
-= 1;
6850 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6851 we'll lose one or two dyn relocs. */
6852 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
6856 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
6858 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
6864 *tls_mask
|= tls_set
;
6865 *tls_mask
&= ~tls_clear
;
6868 if (elf_section_data (sec
)->relocs
!= relstart
)
6873 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6874 != (unsigned char *) locsyms
))
6876 if (!info
->keep_memory
)
6879 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
6885 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6886 the values of any global symbols in a toc section that has been
6887 edited. Globals in toc sections should be a rarity, so this function
6888 sets a flag if any are found in toc sections other than the one just
6889 edited, so that futher hash table traversals can be avoided. */
6891 struct adjust_toc_info
6894 unsigned long *skip
;
6895 bfd_boolean global_toc_syms
;
6899 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
6901 struct ppc_link_hash_entry
*eh
;
6902 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
6904 if (h
->root
.type
== bfd_link_hash_indirect
)
6907 if (h
->root
.type
== bfd_link_hash_warning
)
6908 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6910 if (h
->root
.type
!= bfd_link_hash_defined
6911 && h
->root
.type
!= bfd_link_hash_defweak
)
6914 eh
= (struct ppc_link_hash_entry
*) h
;
6915 if (eh
->adjust_done
)
6918 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
6920 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
6921 if (skip
!= (unsigned long) -1)
6922 eh
->elf
.root
.u
.def
.value
-= skip
;
6925 (*_bfd_error_handler
)
6926 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
6927 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
6928 eh
->elf
.root
.u
.def
.value
= 0;
6930 eh
->adjust_done
= 1;
6932 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
6933 toc_inf
->global_toc_syms
= TRUE
;
6938 /* Examine all relocs referencing .toc sections in order to remove
6939 unused .toc entries. */
6942 ppc64_elf_edit_toc (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6945 struct adjust_toc_info toc_inf
;
6947 toc_inf
.global_toc_syms
= TRUE
;
6948 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6950 asection
*toc
, *sec
;
6951 Elf_Internal_Shdr
*symtab_hdr
;
6952 Elf_Internal_Sym
*local_syms
;
6953 struct elf_link_hash_entry
**sym_hashes
;
6954 Elf_Internal_Rela
*relstart
, *rel
;
6955 unsigned long *skip
, *drop
;
6956 unsigned char *used
;
6957 unsigned char *keep
, last
, some_unused
;
6959 toc
= bfd_get_section_by_name (ibfd
, ".toc");
6962 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
6963 || elf_discarded_section (toc
))
6967 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6968 sym_hashes
= elf_sym_hashes (ibfd
);
6970 /* Look at sections dropped from the final link. */
6973 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6975 if (sec
->reloc_count
== 0
6976 || !elf_discarded_section (sec
)
6977 || get_opd_info (sec
)
6978 || (sec
->flags
& SEC_ALLOC
) == 0
6979 || (sec
->flags
& SEC_DEBUGGING
) != 0)
6982 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
6983 if (relstart
== NULL
)
6986 /* Run through the relocs to see which toc entries might be
6988 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
6990 enum elf_ppc64_reloc_type r_type
;
6991 unsigned long r_symndx
;
6993 struct elf_link_hash_entry
*h
;
6994 Elf_Internal_Sym
*sym
;
6997 r_type
= ELF64_R_TYPE (rel
->r_info
);
7004 case R_PPC64_TOC16_LO
:
7005 case R_PPC64_TOC16_HI
:
7006 case R_PPC64_TOC16_HA
:
7007 case R_PPC64_TOC16_DS
:
7008 case R_PPC64_TOC16_LO_DS
:
7012 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7013 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7021 val
= h
->root
.u
.def
.value
;
7023 val
= sym
->st_value
;
7024 val
+= rel
->r_addend
;
7026 if (val
>= toc
->size
)
7029 /* Anything in the toc ought to be aligned to 8 bytes.
7030 If not, don't mark as unused. */
7036 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
7044 if (elf_section_data (sec
)->relocs
!= relstart
)
7051 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
7055 if (local_syms
!= NULL
7056 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7060 && elf_section_data (sec
)->relocs
!= relstart
)
7067 /* Now check all kept sections that might reference the toc. */
7068 for (sec
= ibfd
->sections
;
7070 /* Check the toc itself last. */
7071 sec
= (sec
== toc
? NULL
7072 : sec
->next
== toc
&& sec
->next
->next
? sec
->next
->next
7073 : sec
->next
== NULL
? toc
7078 if (sec
->reloc_count
== 0
7079 || elf_discarded_section (sec
)
7080 || get_opd_info (sec
)
7081 || (sec
->flags
& SEC_ALLOC
) == 0
7082 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7085 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
7086 if (relstart
== NULL
)
7089 /* Mark toc entries referenced as used. */
7092 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7094 enum elf_ppc64_reloc_type r_type
;
7095 unsigned long r_symndx
;
7097 struct elf_link_hash_entry
*h
;
7098 Elf_Internal_Sym
*sym
;
7101 r_type
= ELF64_R_TYPE (rel
->r_info
);
7105 case R_PPC64_TOC16_LO
:
7106 case R_PPC64_TOC16_HI
:
7107 case R_PPC64_TOC16_HA
:
7108 case R_PPC64_TOC16_DS
:
7109 case R_PPC64_TOC16_LO_DS
:
7110 /* In case we're taking addresses of toc entries. */
7111 case R_PPC64_ADDR64
:
7118 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7119 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7130 val
= h
->root
.u
.def
.value
;
7132 val
= sym
->st_value
;
7133 val
+= rel
->r_addend
;
7135 if (val
>= toc
->size
)
7138 /* For the toc section, we only mark as used if
7139 this entry itself isn't unused. */
7142 && (used
[rel
->r_offset
>> 3]
7143 || !skip
[rel
->r_offset
>> 3]))
7144 /* Do all the relocs again, to catch reference
7153 /* Merge the used and skip arrays. Assume that TOC
7154 doublewords not appearing as either used or unused belong
7155 to to an entry more than one doubleword in size. */
7156 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
7157 drop
< skip
+ (toc
->size
+ 7) / 8;
7178 bfd_byte
*contents
, *src
;
7181 /* Shuffle the toc contents, and at the same time convert the
7182 skip array from booleans into offsets. */
7183 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
7186 elf_section_data (toc
)->this_hdr
.contents
= contents
;
7188 for (src
= contents
, off
= 0, drop
= skip
;
7189 src
< contents
+ toc
->size
;
7194 *drop
= (unsigned long) -1;
7200 memcpy (src
- off
, src
, 8);
7203 toc
->rawsize
= toc
->size
;
7204 toc
->size
= src
- contents
- off
;
7206 if (toc
->reloc_count
!= 0)
7208 Elf_Internal_Rela
*wrel
;
7211 /* Read toc relocs. */
7212 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
7214 if (relstart
== NULL
)
7217 /* Remove unused toc relocs, and adjust those we keep. */
7219 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
7220 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
7222 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
7223 wrel
->r_info
= rel
->r_info
;
7224 wrel
->r_addend
= rel
->r_addend
;
7227 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
7228 &local_syms
, NULL
, NULL
))
7231 toc
->reloc_count
= wrel
- relstart
;
7232 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
7233 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
7234 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
7237 /* Adjust addends for relocs against the toc section sym. */
7238 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7240 if (sec
->reloc_count
== 0
7241 || elf_discarded_section (sec
))
7244 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7246 if (relstart
== NULL
)
7249 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7251 enum elf_ppc64_reloc_type r_type
;
7252 unsigned long r_symndx
;
7254 struct elf_link_hash_entry
*h
;
7255 Elf_Internal_Sym
*sym
;
7257 r_type
= ELF64_R_TYPE (rel
->r_info
);
7264 case R_PPC64_TOC16_LO
:
7265 case R_PPC64_TOC16_HI
:
7266 case R_PPC64_TOC16_HA
:
7267 case R_PPC64_TOC16_DS
:
7268 case R_PPC64_TOC16_LO_DS
:
7269 case R_PPC64_ADDR64
:
7273 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7274 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7278 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
7281 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
7285 /* We shouldn't have local or global symbols defined in the TOC,
7286 but handle them anyway. */
7287 if (local_syms
!= NULL
)
7289 Elf_Internal_Sym
*sym
;
7291 for (sym
= local_syms
;
7292 sym
< local_syms
+ symtab_hdr
->sh_info
;
7294 if (sym
->st_shndx
!= SHN_UNDEF
7295 && (sym
->st_shndx
< SHN_LORESERVE
7296 || sym
->st_shndx
> SHN_HIRESERVE
)
7297 && sym
->st_value
!= 0
7298 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
7300 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
7301 sym
->st_value
-= skip
[sym
->st_value
>> 3];
7304 (*_bfd_error_handler
)
7305 (_("%s defined in removed toc entry"),
7306 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7309 sym
->st_shndx
= SHN_ABS
;
7311 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7315 /* Finally, adjust any global syms defined in the toc. */
7316 if (toc_inf
.global_toc_syms
)
7319 toc_inf
.skip
= skip
;
7320 toc_inf
.global_toc_syms
= FALSE
;
7321 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
7326 if (local_syms
!= NULL
7327 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7329 if (!info
->keep_memory
)
7332 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7340 /* Allocate space in .plt, .got and associated reloc sections for
7344 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7346 struct bfd_link_info
*info
;
7347 struct ppc_link_hash_table
*htab
;
7349 struct ppc_link_hash_entry
*eh
;
7350 struct ppc_dyn_relocs
*p
;
7351 struct got_entry
*gent
;
7353 if (h
->root
.type
== bfd_link_hash_indirect
)
7356 if (h
->root
.type
== bfd_link_hash_warning
)
7357 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7359 info
= (struct bfd_link_info
*) inf
;
7360 htab
= ppc_hash_table (info
);
7362 if (htab
->elf
.dynamic_sections_created
7364 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
7366 struct plt_entry
*pent
;
7367 bfd_boolean doneone
= FALSE
;
7368 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7369 if (pent
->plt
.refcount
> 0)
7371 /* If this is the first .plt entry, make room for the special
7375 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
7377 pent
->plt
.offset
= s
->size
;
7379 /* Make room for this entry. */
7380 s
->size
+= PLT_ENTRY_SIZE
;
7382 /* Make room for the .glink code. */
7385 s
->size
+= GLINK_CALL_STUB_SIZE
;
7386 /* We need bigger stubs past index 32767. */
7387 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
7391 /* We also need to make an entry in the .rela.plt section. */
7393 s
->size
+= sizeof (Elf64_External_Rela
);
7397 pent
->plt
.offset
= (bfd_vma
) -1;
7400 h
->plt
.plist
= NULL
;
7406 h
->plt
.plist
= NULL
;
7410 eh
= (struct ppc_link_hash_entry
*) h
;
7411 /* Run through the TLS GD got entries first if we're changing them
7413 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
7414 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7415 if (gent
->got
.refcount
> 0
7416 && (gent
->tls_type
& TLS_GD
) != 0)
7418 /* This was a GD entry that has been converted to TPREL. If
7419 there happens to be a TPREL entry we can use that one. */
7420 struct got_entry
*ent
;
7421 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
7422 if (ent
->got
.refcount
> 0
7423 && (ent
->tls_type
& TLS_TPREL
) != 0
7424 && ent
->addend
== gent
->addend
7425 && ent
->owner
== gent
->owner
)
7427 gent
->got
.refcount
= 0;
7431 /* If not, then we'll be using our own TPREL entry. */
7432 if (gent
->got
.refcount
!= 0)
7433 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
7436 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7437 if (gent
->got
.refcount
> 0)
7441 /* Make sure this symbol is output as a dynamic symbol.
7442 Undefined weak syms won't yet be marked as dynamic,
7443 nor will all TLS symbols. */
7444 if (h
->dynindx
== -1
7445 && !h
->forced_local
)
7447 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7451 if ((gent
->tls_type
& TLS_LD
) != 0
7454 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
7458 s
= ppc64_elf_tdata (gent
->owner
)->got
;
7459 gent
->got
.offset
= s
->size
;
7461 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
7462 dyn
= htab
->elf
.dynamic_sections_created
;
7464 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
7465 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7466 || h
->root
.type
!= bfd_link_hash_undefweak
))
7467 ppc64_elf_tdata (gent
->owner
)->relgot
->size
7468 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
7469 ? 2 * sizeof (Elf64_External_Rela
)
7470 : sizeof (Elf64_External_Rela
));
7473 gent
->got
.offset
= (bfd_vma
) -1;
7475 if (eh
->dyn_relocs
== NULL
)
7478 /* In the shared -Bsymbolic case, discard space allocated for
7479 dynamic pc-relative relocs against symbols which turn out to be
7480 defined in regular objects. For the normal shared case, discard
7481 space for relocs that have become local due to symbol visibility
7486 /* Relocs that use pc_count are those that appear on a call insn,
7487 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7488 generated via assembly. We want calls to protected symbols to
7489 resolve directly to the function rather than going via the plt.
7490 If people want function pointer comparisons to work as expected
7491 then they should avoid writing weird assembly. */
7492 if (SYMBOL_CALLS_LOCAL (info
, h
))
7494 struct ppc_dyn_relocs
**pp
;
7496 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
7498 p
->count
-= p
->pc_count
;
7507 /* Also discard relocs on undefined weak syms with non-default
7509 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7510 && h
->root
.type
== bfd_link_hash_undefweak
)
7511 eh
->dyn_relocs
= NULL
;
7513 else if (ELIMINATE_COPY_RELOCS
)
7515 /* For the non-shared case, discard space for relocs against
7516 symbols which turn out to need copy relocs or are not
7523 /* Make sure this symbol is output as a dynamic symbol.
7524 Undefined weak syms won't yet be marked as dynamic. */
7525 if (h
->dynindx
== -1
7526 && !h
->forced_local
)
7528 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7532 /* If that succeeded, we know we'll be keeping all the
7534 if (h
->dynindx
!= -1)
7538 eh
->dyn_relocs
= NULL
;
7543 /* Finally, allocate space. */
7544 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7546 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
7547 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7553 /* Find any dynamic relocs that apply to read-only sections. */
7556 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7558 struct ppc_link_hash_entry
*eh
;
7559 struct ppc_dyn_relocs
*p
;
7561 if (h
->root
.type
== bfd_link_hash_warning
)
7562 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7564 eh
= (struct ppc_link_hash_entry
*) h
;
7565 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7567 asection
*s
= p
->sec
->output_section
;
7569 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7571 struct bfd_link_info
*info
= inf
;
7573 info
->flags
|= DF_TEXTREL
;
7575 /* Not an error, just cut short the traversal. */
7582 /* Set the sizes of the dynamic sections. */
7585 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
7586 struct bfd_link_info
*info
)
7588 struct ppc_link_hash_table
*htab
;
7594 htab
= ppc_hash_table (info
);
7595 dynobj
= htab
->elf
.dynobj
;
7599 if (htab
->elf
.dynamic_sections_created
)
7601 /* Set the contents of the .interp section to the interpreter. */
7602 if (info
->executable
)
7604 s
= bfd_get_section_by_name (dynobj
, ".interp");
7607 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
7608 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
7612 /* Set up .got offsets for local syms, and space for local dynamic
7614 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7616 struct got_entry
**lgot_ents
;
7617 struct got_entry
**end_lgot_ents
;
7619 bfd_size_type locsymcount
;
7620 Elf_Internal_Shdr
*symtab_hdr
;
7623 if (!is_ppc64_elf_target (ibfd
->xvec
))
7626 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
7628 s
= ppc64_elf_tdata (ibfd
)->got
;
7629 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7633 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7634 srel
->size
+= sizeof (Elf64_External_Rela
);
7638 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
7640 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
7642 struct ppc_dyn_relocs
*p
;
7644 for (p
= *((struct ppc_dyn_relocs
**)
7645 &elf_section_data (s
)->local_dynrel
);
7649 if (!bfd_is_abs_section (p
->sec
)
7650 && bfd_is_abs_section (p
->sec
->output_section
))
7652 /* Input section has been discarded, either because
7653 it is a copy of a linkonce section or due to
7654 linker script /DISCARD/, so we'll be discarding
7657 else if (p
->count
!= 0)
7659 srel
= elf_section_data (p
->sec
)->sreloc
;
7660 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7661 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
7662 info
->flags
|= DF_TEXTREL
;
7667 lgot_ents
= elf_local_got_ents (ibfd
);
7671 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7672 locsymcount
= symtab_hdr
->sh_info
;
7673 end_lgot_ents
= lgot_ents
+ locsymcount
;
7674 lgot_masks
= (char *) end_lgot_ents
;
7675 s
= ppc64_elf_tdata (ibfd
)->got
;
7676 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7677 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
7679 struct got_entry
*ent
;
7681 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
7682 if (ent
->got
.refcount
> 0)
7684 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
7686 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
7688 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7691 srel
->size
+= sizeof (Elf64_External_Rela
);
7693 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
7697 ent
->got
.offset
= s
->size
;
7698 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
7702 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
7708 srel
->size
+= sizeof (Elf64_External_Rela
);
7713 ent
->got
.offset
= (bfd_vma
) -1;
7717 /* Allocate global sym .plt and .got entries, and space for global
7718 sym dynamic relocs. */
7719 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
7721 /* We now have determined the sizes of the various dynamic sections.
7722 Allocate memory for them. */
7724 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
7726 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7729 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
7730 /* These haven't been allocated yet; don't strip. */
7732 else if (s
== htab
->got
7734 || s
== htab
->glink
)
7736 /* Strip this section if we don't need it; see the
7739 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
7743 /* If we don't need this section, strip it from the
7744 output file. This is mostly to handle .rela.bss and
7745 .rela.plt. We must create both sections in
7746 create_dynamic_sections, because they must be created
7747 before the linker maps input sections to output
7748 sections. The linker does that before
7749 adjust_dynamic_symbol is called, and it is that
7750 function which decides whether anything needs to go
7751 into these sections. */
7755 if (s
!= htab
->relplt
)
7758 /* We use the reloc_count field as a counter if we need
7759 to copy relocs into the output file. */
7765 /* It's not one of our sections, so don't allocate space. */
7771 s
->flags
|= SEC_EXCLUDE
;
7775 /* .plt is in the bss section. We don't initialise it. */
7779 /* Allocate memory for the section contents. We use bfd_zalloc
7780 here in case unused entries are not reclaimed before the
7781 section's contents are written out. This should not happen,
7782 but this way if it does we get a R_PPC64_NONE reloc in .rela
7783 sections instead of garbage.
7784 We also rely on the section contents being zero when writing
7786 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
7787 if (s
->contents
== NULL
)
7791 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7793 if (!is_ppc64_elf_target (ibfd
->xvec
))
7796 s
= ppc64_elf_tdata (ibfd
)->got
;
7797 if (s
!= NULL
&& s
!= htab
->got
)
7800 s
->flags
|= SEC_EXCLUDE
;
7803 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7804 if (s
->contents
== NULL
)
7808 s
= ppc64_elf_tdata (ibfd
)->relgot
;
7812 s
->flags
|= SEC_EXCLUDE
;
7815 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7816 if (s
->contents
== NULL
)
7824 if (htab
->elf
.dynamic_sections_created
)
7826 /* Add some entries to the .dynamic section. We fill in the
7827 values later, in ppc64_elf_finish_dynamic_sections, but we
7828 must add the entries now so that we get the correct size for
7829 the .dynamic section. The DT_DEBUG entry is filled in by the
7830 dynamic linker and used by the debugger. */
7831 #define add_dynamic_entry(TAG, VAL) \
7832 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7834 if (info
->executable
)
7836 if (!add_dynamic_entry (DT_DEBUG
, 0))
7840 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
7842 if (!add_dynamic_entry (DT_PLTGOT
, 0)
7843 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
7844 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
7845 || !add_dynamic_entry (DT_JMPREL
, 0)
7846 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
7852 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
7853 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
7859 if (!add_dynamic_entry (DT_RELA
, 0)
7860 || !add_dynamic_entry (DT_RELASZ
, 0)
7861 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
7864 /* If any dynamic relocs apply to a read-only section,
7865 then we need a DT_TEXTREL entry. */
7866 if ((info
->flags
& DF_TEXTREL
) == 0)
7867 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
7869 if ((info
->flags
& DF_TEXTREL
) != 0)
7871 if (!add_dynamic_entry (DT_TEXTREL
, 0))
7876 #undef add_dynamic_entry
7881 /* Determine the type of stub needed, if any, for a call. */
7883 static inline enum ppc_stub_type
7884 ppc_type_of_stub (asection
*input_sec
,
7885 const Elf_Internal_Rela
*rel
,
7886 struct ppc_link_hash_entry
**hash
,
7887 bfd_vma destination
)
7889 struct ppc_link_hash_entry
*h
= *hash
;
7891 bfd_vma branch_offset
;
7892 bfd_vma max_branch_offset
;
7893 enum elf_ppc64_reloc_type r_type
;
7898 && h
->oh
->is_func_descriptor
)
7901 if (h
->elf
.dynindx
!= -1)
7903 struct plt_entry
*ent
;
7905 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7906 if (ent
->addend
== rel
->r_addend
7907 && ent
->plt
.offset
!= (bfd_vma
) -1)
7910 return ppc_stub_plt_call
;
7914 if (!(h
->elf
.root
.type
== bfd_link_hash_defined
7915 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
7916 || h
->elf
.root
.u
.def
.section
->output_section
== NULL
)
7917 return ppc_stub_none
;
7920 /* Determine where the call point is. */
7921 location
= (input_sec
->output_offset
7922 + input_sec
->output_section
->vma
7925 branch_offset
= destination
- location
;
7926 r_type
= ELF64_R_TYPE (rel
->r_info
);
7928 /* Determine if a long branch stub is needed. */
7929 max_branch_offset
= 1 << 25;
7930 if (r_type
!= R_PPC64_REL24
)
7931 max_branch_offset
= 1 << 15;
7933 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
7934 /* We need a stub. Figure out whether a long_branch or plt_branch
7936 return ppc_stub_long_branch
;
7938 return ppc_stub_none
;
7941 /* Build a .plt call stub. */
7943 static inline bfd_byte
*
7944 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
7946 #define PPC_LO(v) ((v) & 0xffff)
7947 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7948 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7950 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
7951 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
7952 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7953 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7954 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7956 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
7957 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7958 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7960 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
7961 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7962 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
7967 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7969 struct ppc_stub_hash_entry
*stub_entry
;
7970 struct ppc_branch_hash_entry
*br_entry
;
7971 struct bfd_link_info
*info
;
7972 struct ppc_link_hash_table
*htab
;
7976 struct plt_entry
*ent
;
7980 /* Massage our args to the form they really have. */
7981 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
7984 htab
= ppc_hash_table (info
);
7986 /* Make a note of the offset within the stubs for this entry. */
7987 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
7988 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
7990 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
7991 switch (stub_entry
->stub_type
)
7993 case ppc_stub_long_branch
:
7994 case ppc_stub_long_branch_r2off
:
7995 /* Branches are relative. This is where we are going to. */
7996 off
= dest
= (stub_entry
->target_value
7997 + stub_entry
->target_section
->output_offset
7998 + stub_entry
->target_section
->output_section
->vma
);
8000 /* And this is where we are coming from. */
8001 off
-= (stub_entry
->stub_offset
8002 + stub_entry
->stub_sec
->output_offset
8003 + stub_entry
->stub_sec
->output_section
->vma
);
8005 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
8011 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8012 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8013 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8015 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8017 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8022 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
8024 BFD_ASSERT (off
+ (1 << 25) < (bfd_vma
) (1 << 26));
8026 if (info
->emitrelocations
)
8028 Elf_Internal_Rela
*relocs
, *r
;
8029 struct bfd_elf_section_data
*elfsec_data
;
8031 elfsec_data
= elf_section_data (stub_entry
->stub_sec
);
8032 relocs
= elfsec_data
->relocs
;
8035 bfd_size_type relsize
;
8036 relsize
= stub_entry
->stub_sec
->reloc_count
* sizeof (*relocs
);
8037 relocs
= bfd_alloc (htab
->stub_bfd
, relsize
);
8040 elfsec_data
->relocs
= relocs
;
8041 elfsec_data
->rel_hdr
.sh_size
= relsize
;
8042 elfsec_data
->rel_hdr
.sh_entsize
= 24;
8043 stub_entry
->stub_sec
->reloc_count
= 0;
8045 r
= relocs
+ stub_entry
->stub_sec
->reloc_count
;
8046 stub_entry
->stub_sec
->reloc_count
+= 1;
8047 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8048 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
8050 if (stub_entry
->h
!= NULL
)
8052 struct elf_link_hash_entry
**hashes
;
8053 unsigned long symndx
;
8054 struct ppc_link_hash_entry
*h
;
8056 hashes
= elf_sym_hashes (htab
->stub_bfd
);
8059 bfd_size_type hsize
;
8061 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
8062 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
8065 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
8066 htab
->stub_globals
= 1;
8068 symndx
= htab
->stub_globals
++;
8070 hashes
[symndx
] = &h
->elf
;
8071 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
8072 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
8074 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
8075 /* H is an opd symbol. The addend must be zero. */
8079 off
= (h
->elf
.root
.u
.def
.value
8080 + h
->elf
.root
.u
.def
.section
->output_offset
8081 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
8088 case ppc_stub_plt_branch
:
8089 case ppc_stub_plt_branch_r2off
:
8090 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8091 stub_entry
->root
.string
+ 9,
8093 if (br_entry
== NULL
)
8095 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
8096 stub_entry
->root
.string
+ 9);
8097 htab
->stub_error
= TRUE
;
8101 off
= (stub_entry
->target_value
8102 + stub_entry
->target_section
->output_offset
8103 + stub_entry
->target_section
->output_section
->vma
);
8105 bfd_put_64 (htab
->brlt
->owner
, off
,
8106 htab
->brlt
->contents
+ br_entry
->offset
);
8108 if (htab
->relbrlt
!= NULL
)
8110 /* Create a reloc for the branch lookup table entry. */
8111 Elf_Internal_Rela rela
;
8114 rela
.r_offset
= (br_entry
->offset
8115 + htab
->brlt
->output_offset
8116 + htab
->brlt
->output_section
->vma
);
8117 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8118 rela
.r_addend
= off
;
8120 rl
= htab
->relbrlt
->contents
;
8121 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
8122 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
8125 off
= (br_entry
->offset
8126 + htab
->brlt
->output_offset
8127 + htab
->brlt
->output_section
->vma
8128 - elf_gp (htab
->brlt
->output_section
->owner
)
8129 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8131 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8133 (*_bfd_error_handler
)
8134 (_("linkage table error against `%s'"),
8135 stub_entry
->root
.string
);
8136 bfd_set_error (bfd_error_bad_value
);
8137 htab
->stub_error
= TRUE
;
8142 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
8144 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
8146 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
8153 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8154 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8155 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8157 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
8159 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
8161 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8163 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8167 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
8169 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
8172 case ppc_stub_plt_call
:
8173 /* Do the best we can for shared libraries built without
8174 exporting ".foo" for each "foo". This can happen when symbol
8175 versioning scripts strip all bar a subset of symbols. */
8176 if (stub_entry
->h
->oh
!= NULL
8177 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
8178 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8180 /* Point the symbol at the stub. There may be multiple stubs,
8181 we don't really care; The main thing is to make this sym
8182 defined somewhere. Maybe defining the symbol in the stub
8183 section is a silly idea. If we didn't do this, htab->top_id
8185 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
8186 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
8187 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
8190 /* Now build the stub. */
8192 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8193 if (ent
->addend
== stub_entry
->addend
)
8195 off
= ent
->plt
.offset
;
8198 if (off
>= (bfd_vma
) -2)
8201 off
&= ~ (bfd_vma
) 1;
8202 off
+= (htab
->plt
->output_offset
8203 + htab
->plt
->output_section
->vma
8204 - elf_gp (htab
->plt
->output_section
->owner
)
8205 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8207 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8209 (*_bfd_error_handler
)
8210 (_("linkage table error against `%s'"),
8211 stub_entry
->h
->elf
.root
.root
.string
);
8212 bfd_set_error (bfd_error_bad_value
);
8213 htab
->stub_error
= TRUE
;
8217 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
8226 stub_entry
->stub_sec
->size
+= size
;
8228 if (htab
->emit_stub_syms
)
8230 struct elf_link_hash_entry
*h
;
8233 const char *const stub_str
[] = { "long_branch",
8234 "long_branch_r2off",
8239 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
8240 len2
= strlen (stub_entry
->root
.string
);
8241 name
= bfd_malloc (len1
+ len2
+ 2);
8244 memcpy (name
, stub_entry
->root
.string
, 9);
8245 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
8246 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
8247 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
8250 if (h
->root
.type
== bfd_link_hash_new
)
8252 h
->root
.type
= bfd_link_hash_defined
;
8253 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
8254 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
8257 h
->ref_regular_nonweak
= 1;
8258 h
->forced_local
= 1;
8266 /* As above, but don't actually build the stub. Just bump offset so
8267 we know stub section sizes, and select plt_branch stubs where
8268 long_branch stubs won't do. */
8271 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8273 struct ppc_stub_hash_entry
*stub_entry
;
8274 struct bfd_link_info
*info
;
8275 struct ppc_link_hash_table
*htab
;
8279 /* Massage our args to the form they really have. */
8280 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8283 htab
= ppc_hash_table (info
);
8285 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
8287 struct plt_entry
*ent
;
8289 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8290 if (ent
->addend
== stub_entry
->addend
)
8292 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
8295 if (off
>= (bfd_vma
) -2)
8297 off
+= (htab
->plt
->output_offset
8298 + htab
->plt
->output_section
->vma
8299 - elf_gp (htab
->plt
->output_section
->owner
)
8300 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8302 size
= PLT_CALL_STUB_SIZE
;
8303 if (PPC_HA (off
+ 16) != PPC_HA (off
))
8308 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8310 off
= (stub_entry
->target_value
8311 + stub_entry
->target_section
->output_offset
8312 + stub_entry
->target_section
->output_section
->vma
);
8313 off
-= (stub_entry
->stub_sec
->size
8314 + stub_entry
->stub_sec
->output_offset
8315 + stub_entry
->stub_sec
->output_section
->vma
);
8317 /* Reset the stub type from the plt variant in case we now
8318 can reach with a shorter stub. */
8319 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
8320 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
8323 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8329 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8330 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8332 struct ppc_branch_hash_entry
*br_entry
;
8334 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8335 stub_entry
->root
.string
+ 9,
8337 if (br_entry
== NULL
)
8339 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
8340 stub_entry
->root
.string
+ 9);
8341 htab
->stub_error
= TRUE
;
8345 if (br_entry
->iter
!= htab
->stub_iteration
)
8347 br_entry
->iter
= htab
->stub_iteration
;
8348 br_entry
->offset
= htab
->brlt
->size
;
8349 htab
->brlt
->size
+= 8;
8351 if (htab
->relbrlt
!= NULL
)
8352 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
8355 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
8357 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
8361 if (info
->emitrelocations
8362 && (stub_entry
->stub_type
== ppc_stub_long_branch
8363 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
8364 stub_entry
->stub_sec
->reloc_count
+= 1;
8367 stub_entry
->stub_sec
->size
+= size
;
8371 /* Set up various things so that we can make a list of input sections
8372 for each output section included in the link. Returns -1 on error,
8373 0 when no stubs will be needed, and 1 on success. */
8376 ppc64_elf_setup_section_lists (bfd
*output_bfd
,
8377 struct bfd_link_info
*info
,
8381 int top_id
, top_index
, id
;
8383 asection
**input_list
;
8385 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8387 htab
->no_multi_toc
= no_multi_toc
;
8389 if (htab
->brlt
== NULL
)
8392 /* Find the top input section id. */
8393 for (input_bfd
= info
->input_bfds
, top_id
= 3;
8395 input_bfd
= input_bfd
->link_next
)
8397 for (section
= input_bfd
->sections
;
8399 section
= section
->next
)
8401 if (top_id
< section
->id
)
8402 top_id
= section
->id
;
8406 htab
->top_id
= top_id
;
8407 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
8408 htab
->stub_group
= bfd_zmalloc (amt
);
8409 if (htab
->stub_group
== NULL
)
8412 /* Set toc_off for com, und, abs and ind sections. */
8413 for (id
= 0; id
< 3; id
++)
8414 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
8416 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
8418 /* We can't use output_bfd->section_count here to find the top output
8419 section index as some sections may have been removed, and
8420 strip_excluded_output_sections doesn't renumber the indices. */
8421 for (section
= output_bfd
->sections
, top_index
= 0;
8423 section
= section
->next
)
8425 if (top_index
< section
->index
)
8426 top_index
= section
->index
;
8429 htab
->top_index
= top_index
;
8430 amt
= sizeof (asection
*) * (top_index
+ 1);
8431 input_list
= bfd_zmalloc (amt
);
8432 htab
->input_list
= input_list
;
8433 if (input_list
== NULL
)
8439 /* The linker repeatedly calls this function for each TOC input section
8440 and linker generated GOT section. Group input bfds such that the toc
8441 within a group is less than 64k in size. Will break with cute linker
8442 scripts that play games with dot in the output toc section. */
8445 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
8447 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8449 if (!htab
->no_multi_toc
)
8451 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
8452 bfd_vma off
= addr
- htab
->toc_curr
;
8454 if (off
+ isec
->size
> 0x10000)
8455 htab
->toc_curr
= addr
;
8457 elf_gp (isec
->owner
) = (htab
->toc_curr
8458 - elf_gp (isec
->output_section
->owner
)
8463 /* Called after the last call to the above function. */
8466 ppc64_elf_reinit_toc (bfd
*output_bfd
, struct bfd_link_info
*info
)
8468 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8470 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (output_bfd
);
8472 /* toc_curr tracks the TOC offset used for code sections below in
8473 ppc64_elf_next_input_section. Start off at 0x8000. */
8474 htab
->toc_curr
= TOC_BASE_OFF
;
8477 /* No toc references were found in ISEC. If the code in ISEC makes no
8478 calls, then there's no need to use toc adjusting stubs when branching
8479 into ISEC. Actually, indirect calls from ISEC are OK as they will
8480 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8481 needed, and 2 if a cyclical call-graph was found but no other reason
8482 for a stub was detected. If called from the top level, a return of
8483 2 means the same as a return of 0. */
8486 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
8488 Elf_Internal_Rela
*relstart
, *rel
;
8489 Elf_Internal_Sym
*local_syms
;
8491 struct ppc_link_hash_table
*htab
;
8493 /* We know none of our code bearing sections will need toc stubs. */
8494 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
8497 if (isec
->size
== 0)
8500 if (isec
->output_section
== NULL
)
8503 /* Hack for linux kernel. .fixup contains branches, but only back to
8504 the function that hit an exception. */
8505 if (strcmp (isec
->name
, ".fixup") == 0)
8508 if (isec
->reloc_count
== 0)
8511 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
8513 if (relstart
== NULL
)
8516 /* Look for branches to outside of this section. */
8519 htab
= ppc_hash_table (info
);
8520 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
8522 enum elf_ppc64_reloc_type r_type
;
8523 unsigned long r_symndx
;
8524 struct elf_link_hash_entry
*h
;
8525 Elf_Internal_Sym
*sym
;
8531 r_type
= ELF64_R_TYPE (rel
->r_info
);
8532 if (r_type
!= R_PPC64_REL24
8533 && r_type
!= R_PPC64_REL14
8534 && r_type
!= R_PPC64_REL14_BRTAKEN
8535 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8538 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8539 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
8546 /* Calls to dynamic lib functions go through a plt call stub
8547 that uses r2. Branches to undefined symbols might be a call
8548 using old-style dot symbols that can be satisfied by a plt
8549 call into a new-style dynamic library. */
8550 if (sym_sec
== NULL
)
8552 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8555 && eh
->oh
->elf
.plt
.plist
!= NULL
)
8561 /* Ignore other undefined symbols. */
8565 /* Assume branches to other sections not included in the link need
8566 stubs too, to cover -R and absolute syms. */
8567 if (sym_sec
->output_section
== NULL
)
8574 sym_value
= sym
->st_value
;
8577 if (h
->root
.type
!= bfd_link_hash_defined
8578 && h
->root
.type
!= bfd_link_hash_defweak
)
8580 sym_value
= h
->root
.u
.def
.value
;
8582 sym_value
+= rel
->r_addend
;
8584 /* If this branch reloc uses an opd sym, find the code section. */
8585 opd_adjust
= get_opd_info (sym_sec
);
8586 if (opd_adjust
!= NULL
)
8592 adjust
= opd_adjust
[sym
->st_value
/ 8];
8594 /* Assume deleted functions won't ever be called. */
8596 sym_value
+= adjust
;
8599 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
8600 if (dest
== (bfd_vma
) -1)
8605 + sym_sec
->output_offset
8606 + sym_sec
->output_section
->vma
);
8608 /* Ignore branch to self. */
8609 if (sym_sec
== isec
)
8612 /* If the called function uses the toc, we need a stub. */
8613 if (sym_sec
->has_toc_reloc
8614 || sym_sec
->makes_toc_func_call
)
8620 /* Assume any branch that needs a long branch stub might in fact
8621 need a plt_branch stub. A plt_branch stub uses r2. */
8622 else if (dest
- (isec
->output_offset
8623 + isec
->output_section
->vma
8624 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
8630 /* If calling back to a section in the process of being tested, we
8631 can't say for sure that no toc adjusting stubs are needed, so
8632 don't return zero. */
8633 else if (sym_sec
->call_check_in_progress
)
8636 /* Branches to another section that itself doesn't have any TOC
8637 references are OK. Recursively call ourselves to check. */
8638 else if (sym_sec
->id
<= htab
->top_id
8639 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
8643 /* Mark current section as indeterminate, so that other
8644 sections that call back to current won't be marked as
8646 isec
->call_check_in_progress
= 1;
8647 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
8648 isec
->call_check_in_progress
= 0;
8652 /* An error. Exit. */
8656 else if (recur
<= 1)
8658 /* Known result. Mark as checked and set section flag. */
8659 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
8662 sym_sec
->makes_toc_func_call
= 1;
8669 /* Unknown result. Continue checking. */
8675 if (local_syms
!= NULL
8676 && (elf_tdata (isec
->owner
)->symtab_hdr
.contents
8677 != (unsigned char *) local_syms
))
8679 if (elf_section_data (isec
)->relocs
!= relstart
)
8685 /* The linker repeatedly calls this function for each input section,
8686 in the order that input sections are linked into output sections.
8687 Build lists of input sections to determine groupings between which
8688 we may insert linker stubs. */
8691 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
8693 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8695 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
8696 && isec
->output_section
->index
<= htab
->top_index
)
8698 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
8699 /* Steal the link_sec pointer for our list. */
8700 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8701 /* This happens to make the list in reverse order,
8702 which is what we want. */
8703 PREV_SEC (isec
) = *list
;
8707 if (htab
->multi_toc_needed
)
8709 /* If a code section has a function that uses the TOC then we need
8710 to use the right TOC (obviously). Also, make sure that .opd gets
8711 the correct TOC value for R_PPC64_TOC relocs that don't have or
8712 can't find their function symbol (shouldn't ever happen now). */
8713 if (isec
->has_toc_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
8715 if (elf_gp (isec
->owner
) != 0)
8716 htab
->toc_curr
= elf_gp (isec
->owner
);
8718 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
8720 int ret
= toc_adjusting_stub_needed (info
, isec
);
8724 isec
->makes_toc_func_call
= ret
& 1;
8728 /* Functions that don't use the TOC can belong in any TOC group.
8729 Use the last TOC base. This happens to make _init and _fini
8731 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
8735 /* See whether we can group stub sections together. Grouping stub
8736 sections may result in fewer stubs. More importantly, we need to
8737 put all .init* and .fini* stubs at the beginning of the .init or
8738 .fini output sections respectively, because glibc splits the
8739 _init and _fini functions into multiple parts. Putting a stub in
8740 the middle of a function is not a good idea. */
8743 group_sections (struct ppc_link_hash_table
*htab
,
8744 bfd_size_type stub_group_size
,
8745 bfd_boolean stubs_always_before_branch
)
8747 asection
**list
= htab
->input_list
+ htab
->top_index
;
8750 asection
*tail
= *list
;
8751 while (tail
!= NULL
)
8755 bfd_size_type total
;
8756 bfd_boolean big_sec
;
8761 big_sec
= total
>= stub_group_size
;
8762 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
8764 while ((prev
= PREV_SEC (curr
)) != NULL
8765 && ((total
+= curr
->output_offset
- prev
->output_offset
)
8767 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8770 /* OK, the size from the start of CURR to the end is less
8771 than stub_group_size and thus can be handled by one stub
8772 section. (or the tail section is itself larger than
8773 stub_group_size, in which case we may be toast.) We
8774 should really be keeping track of the total size of stubs
8775 added here, as stubs contribute to the final output
8776 section size. That's a little tricky, and this way will
8777 only break if stubs added make the total size more than
8778 2^25, ie. for the default stub_group_size, if stubs total
8779 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8782 prev
= PREV_SEC (tail
);
8783 /* Set up this stub group. */
8784 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8786 while (tail
!= curr
&& (tail
= prev
) != NULL
);
8788 /* But wait, there's more! Input sections up to stub_group_size
8789 bytes before the stub section can be handled by it too.
8790 Don't do this if we have a really large section after the
8791 stubs, as adding more stubs increases the chance that
8792 branches may not reach into the stub section. */
8793 if (!stubs_always_before_branch
&& !big_sec
)
8797 && ((total
+= tail
->output_offset
- prev
->output_offset
)
8799 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8802 prev
= PREV_SEC (tail
);
8803 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8809 while (list
-- != htab
->input_list
);
8810 free (htab
->input_list
);
8814 /* Determine and set the size of the stub section for a final link.
8816 The basic idea here is to examine all the relocations looking for
8817 PC-relative calls to a target that is unreachable with a "bl"
8821 ppc64_elf_size_stubs (bfd
*output_bfd
,
8822 struct bfd_link_info
*info
,
8823 bfd_signed_vma group_size
,
8824 asection
*(*add_stub_section
) (const char *, asection
*),
8825 void (*layout_sections_again
) (void))
8827 bfd_size_type stub_group_size
;
8828 bfd_boolean stubs_always_before_branch
;
8829 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8831 /* Stash our params away. */
8832 htab
->add_stub_section
= add_stub_section
;
8833 htab
->layout_sections_again
= layout_sections_again
;
8834 stubs_always_before_branch
= group_size
< 0;
8836 stub_group_size
= -group_size
;
8838 stub_group_size
= group_size
;
8839 if (stub_group_size
== 1)
8841 /* Default values. */
8842 if (stubs_always_before_branch
)
8844 stub_group_size
= 0x1e00000;
8845 if (htab
->has_14bit_branch
)
8846 stub_group_size
= 0x7800;
8850 stub_group_size
= 0x1c00000;
8851 if (htab
->has_14bit_branch
)
8852 stub_group_size
= 0x7000;
8856 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
8861 unsigned int bfd_indx
;
8863 bfd_boolean stub_changed
;
8865 htab
->stub_iteration
+= 1;
8866 stub_changed
= FALSE
;
8868 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
8870 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
8872 Elf_Internal_Shdr
*symtab_hdr
;
8874 Elf_Internal_Sym
*local_syms
= NULL
;
8876 /* We'll need the symbol table in a second. */
8877 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
8878 if (symtab_hdr
->sh_info
== 0)
8881 /* Walk over each section attached to the input bfd. */
8882 for (section
= input_bfd
->sections
;
8884 section
= section
->next
)
8886 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
8888 /* If there aren't any relocs, then there's nothing more
8890 if ((section
->flags
& SEC_RELOC
) == 0
8891 || section
->reloc_count
== 0)
8894 /* If this section is a link-once section that will be
8895 discarded, then don't create any stubs. */
8896 if (section
->output_section
== NULL
8897 || section
->output_section
->owner
!= output_bfd
)
8900 /* Get the relocs. */
8902 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
8904 if (internal_relocs
== NULL
)
8905 goto error_ret_free_local
;
8907 /* Now examine each relocation. */
8908 irela
= internal_relocs
;
8909 irelaend
= irela
+ section
->reloc_count
;
8910 for (; irela
< irelaend
; irela
++)
8912 enum elf_ppc64_reloc_type r_type
;
8913 unsigned int r_indx
;
8914 enum ppc_stub_type stub_type
;
8915 struct ppc_stub_hash_entry
*stub_entry
;
8916 asection
*sym_sec
, *code_sec
;
8918 bfd_vma destination
;
8919 bfd_boolean ok_dest
;
8920 struct ppc_link_hash_entry
*hash
;
8921 struct ppc_link_hash_entry
*fdh
;
8922 struct elf_link_hash_entry
*h
;
8923 Elf_Internal_Sym
*sym
;
8925 const asection
*id_sec
;
8928 r_type
= ELF64_R_TYPE (irela
->r_info
);
8929 r_indx
= ELF64_R_SYM (irela
->r_info
);
8931 if (r_type
>= R_PPC64_max
)
8933 bfd_set_error (bfd_error_bad_value
);
8934 goto error_ret_free_internal
;
8937 /* Only look for stubs on branch instructions. */
8938 if (r_type
!= R_PPC64_REL24
8939 && r_type
!= R_PPC64_REL14
8940 && r_type
!= R_PPC64_REL14_BRTAKEN
8941 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8944 /* Now determine the call target, its name, value,
8946 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8948 goto error_ret_free_internal
;
8949 hash
= (struct ppc_link_hash_entry
*) h
;
8955 sym_value
= sym
->st_value
;
8961 /* Recognise an old ABI func code entry sym, and
8962 use the func descriptor sym instead. */
8963 if (hash
->elf
.root
.root
.string
[0] == '.'
8964 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
8966 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
8967 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8969 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
8970 sym_value
= fdh
->elf
.root
.u
.def
.value
;
8971 if (sym_sec
->output_section
!= NULL
)
8977 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
8978 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
8980 sym_value
= hash
->elf
.root
.u
.def
.value
;
8981 if (sym_sec
->output_section
!= NULL
)
8984 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
8986 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
8990 bfd_set_error (bfd_error_bad_value
);
8991 goto error_ret_free_internal
;
8998 sym_value
+= irela
->r_addend
;
8999 destination
= (sym_value
9000 + sym_sec
->output_offset
9001 + sym_sec
->output_section
->vma
);
9005 opd_adjust
= get_opd_info (sym_sec
);
9006 if (opd_adjust
!= NULL
)
9012 long adjust
= opd_adjust
[sym_value
/ 8];
9015 sym_value
+= adjust
;
9017 dest
= opd_entry_value (sym_sec
, sym_value
,
9018 &code_sec
, &sym_value
);
9019 if (dest
!= (bfd_vma
) -1)
9024 /* Fixup old ABI sym to point at code
9026 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
9027 hash
->elf
.root
.u
.def
.section
= code_sec
;
9028 hash
->elf
.root
.u
.def
.value
= sym_value
;
9033 /* Determine what (if any) linker stub is needed. */
9034 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
9037 if (stub_type
!= ppc_stub_plt_call
)
9039 /* Check whether we need a TOC adjusting stub.
9040 Since the linker pastes together pieces from
9041 different object files when creating the
9042 _init and _fini functions, it may be that a
9043 call to what looks like a local sym is in
9044 fact a call needing a TOC adjustment. */
9045 if (code_sec
!= NULL
9046 && code_sec
->output_section
!= NULL
9047 && (htab
->stub_group
[code_sec
->id
].toc_off
9048 != htab
->stub_group
[section
->id
].toc_off
)
9049 && (code_sec
->has_toc_reloc
9050 || code_sec
->makes_toc_func_call
))
9051 stub_type
= ppc_stub_long_branch_r2off
;
9054 if (stub_type
== ppc_stub_none
)
9057 /* __tls_get_addr calls might be eliminated. */
9058 if (stub_type
!= ppc_stub_plt_call
9060 && (hash
== htab
->tls_get_addr
9061 || hash
== htab
->tls_get_addr_fd
)
9062 && section
->has_tls_reloc
9063 && irela
!= internal_relocs
)
9068 if (!get_tls_mask (&tls_mask
, NULL
, &local_syms
,
9069 irela
- 1, input_bfd
))
9070 goto error_ret_free_internal
;
9075 /* Support for grouping stub sections. */
9076 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
9078 /* Get the name of this stub. */
9079 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
9081 goto error_ret_free_internal
;
9083 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
9084 stub_name
, FALSE
, FALSE
);
9085 if (stub_entry
!= NULL
)
9087 /* The proper stub has already been created. */
9092 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
9093 if (stub_entry
== NULL
)
9096 error_ret_free_internal
:
9097 if (elf_section_data (section
)->relocs
== NULL
)
9098 free (internal_relocs
);
9099 error_ret_free_local
:
9100 if (local_syms
!= NULL
9101 && (symtab_hdr
->contents
9102 != (unsigned char *) local_syms
))
9107 stub_entry
->stub_type
= stub_type
;
9108 stub_entry
->target_value
= sym_value
;
9109 stub_entry
->target_section
= code_sec
;
9110 stub_entry
->h
= hash
;
9111 stub_entry
->addend
= irela
->r_addend
;
9113 if (stub_entry
->h
!= NULL
)
9114 htab
->stub_globals
+= 1;
9116 stub_changed
= TRUE
;
9119 /* We're done with the internal relocs, free them. */
9120 if (elf_section_data (section
)->relocs
!= internal_relocs
)
9121 free (internal_relocs
);
9124 if (local_syms
!= NULL
9125 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9127 if (!info
->keep_memory
)
9130 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9137 /* OK, we've added some stubs. Find out the new size of the
9139 for (stub_sec
= htab
->stub_bfd
->sections
;
9141 stub_sec
= stub_sec
->next
)
9142 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9145 stub_sec
->reloc_count
= 0;
9148 htab
->brlt
->size
= 0;
9149 if (htab
->relbrlt
!= NULL
)
9150 htab
->relbrlt
->size
= 0;
9152 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
9154 /* Ask the linker to do its stuff. */
9155 (*htab
->layout_sections_again
) ();
9158 /* It would be nice to strip .branch_lt from the output if the
9159 section is empty, but it's too late. If we strip sections here,
9160 the dynamic symbol table is corrupted since the section symbol
9161 for the stripped section isn't written. */
9166 /* Called after we have determined section placement. If sections
9167 move, we'll be called again. Provide a value for TOCstart. */
9170 ppc64_elf_toc (bfd
*obfd
)
9175 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9176 order. The TOC starts where the first of these sections starts. */
9177 s
= bfd_get_section_by_name (obfd
, ".got");
9179 s
= bfd_get_section_by_name (obfd
, ".toc");
9181 s
= bfd_get_section_by_name (obfd
, ".tocbss");
9183 s
= bfd_get_section_by_name (obfd
, ".plt");
9186 /* This may happen for
9187 o references to TOC base (SYM@toc / TOC[tc0]) without a
9190 o --gc-sections and empty TOC sections
9192 FIXME: Warn user? */
9194 /* Look for a likely section. We probably won't even be
9196 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9197 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
9198 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9201 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9202 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
9203 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9206 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9207 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
9210 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9211 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
9217 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
9222 /* Build all the stubs associated with the current output file.
9223 The stubs are kept in a hash table attached to the main linker
9224 hash table. This function is called via gldelf64ppc_finish. */
9227 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
9228 struct bfd_link_info
*info
,
9231 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9234 int stub_sec_count
= 0;
9236 htab
->emit_stub_syms
= emit_stub_syms
;
9238 /* Allocate memory to hold the linker stubs. */
9239 for (stub_sec
= htab
->stub_bfd
->sections
;
9241 stub_sec
= stub_sec
->next
)
9242 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9243 && stub_sec
->size
!= 0)
9245 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
9246 if (stub_sec
->contents
== NULL
)
9248 /* We want to check that built size is the same as calculated
9249 size. rawsize is a convenient location to use. */
9250 stub_sec
->rawsize
= stub_sec
->size
;
9254 if (htab
->plt
!= NULL
)
9259 /* Build the .glink plt call stub. */
9260 plt0
= (htab
->plt
->output_section
->vma
9261 + htab
->plt
->output_offset
9262 - (htab
->glink
->output_section
->vma
9263 + htab
->glink
->output_offset
9264 + GLINK_CALL_STUB_SIZE
));
9265 if (plt0
+ 0x80008000 > 0xffffffff)
9267 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
9268 bfd_set_error (bfd_error_bad_value
);
9272 if (htab
->emit_stub_syms
)
9274 struct elf_link_hash_entry
*h
;
9275 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
9278 if (h
->root
.type
== bfd_link_hash_new
)
9280 h
->root
.type
= bfd_link_hash_defined
;
9281 h
->root
.u
.def
.section
= htab
->glink
;
9282 h
->root
.u
.def
.value
= 0;
9285 h
->ref_regular_nonweak
= 1;
9286 h
->forced_local
= 1;
9290 p
= htab
->glink
->contents
;
9291 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
9293 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
9295 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
9297 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9299 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
9301 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
9303 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
9305 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9307 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
9309 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
9311 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
9313 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
9315 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
9317 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
9319 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
9321 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
9324 /* Build the .glink lazy link call stubs. */
9326 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
9330 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
9335 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
9337 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
9340 bfd_put_32 (htab
->glink
->owner
,
9341 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
9345 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
9348 if (htab
->brlt
->size
!= 0)
9350 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
9352 if (htab
->brlt
->contents
== NULL
)
9355 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
9357 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
9358 htab
->relbrlt
->size
);
9359 if (htab
->relbrlt
->contents
== NULL
)
9363 /* Build the stubs as directed by the stub hash table. */
9364 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
9366 for (stub_sec
= htab
->stub_bfd
->sections
;
9368 stub_sec
= stub_sec
->next
)
9369 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9371 stub_sec_count
+= 1;
9372 if (stub_sec
->rawsize
!= stub_sec
->size
)
9376 if (stub_sec
!= NULL
9377 || htab
->glink
->rawsize
!= htab
->glink
->size
)
9379 htab
->stub_error
= TRUE
;
9380 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
9383 if (htab
->stub_error
)
9388 *stats
= bfd_malloc (500);
9392 sprintf (*stats
, _("linker stubs in %u group%s\n"
9395 " long branch %lu\n"
9396 " long toc adj %lu\n"
9399 stub_sec_count
== 1 ? "" : "s",
9400 htab
->stub_count
[ppc_stub_long_branch
- 1],
9401 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
9402 htab
->stub_count
[ppc_stub_plt_branch
- 1],
9403 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
9404 htab
->stub_count
[ppc_stub_plt_call
- 1]);
9409 /* This function undoes the changes made by add_symbol_adjust. */
9412 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
9414 struct ppc_link_hash_entry
*eh
;
9416 if (h
->root
.type
== bfd_link_hash_indirect
)
9419 if (h
->root
.type
== bfd_link_hash_warning
)
9420 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9422 eh
= (struct ppc_link_hash_entry
*) h
;
9423 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
9426 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
9431 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
9433 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9434 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
9437 /* The RELOCATE_SECTION function is called by the ELF backend linker
9438 to handle the relocations for a section.
9440 The relocs are always passed as Rela structures; if the section
9441 actually uses Rel structures, the r_addend field will always be
9444 This function is responsible for adjust the section contents as
9445 necessary, and (if using Rela relocs and generating a
9446 relocatable output file) adjusting the reloc addend as
9449 This function does not have to worry about setting the reloc
9450 address or the reloc symbol index.
9452 LOCAL_SYMS is a pointer to the swapped in local symbols.
9454 LOCAL_SECTIONS is an array giving the section in the input file
9455 corresponding to the st_shndx field of each local symbol.
9457 The global hash table entry for the global symbols can be found
9458 via elf_sym_hashes (input_bfd).
9460 When generating relocatable output, this function must handle
9461 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9462 going to be the section symbol corresponding to the output
9463 section, which means that the addend must be adjusted
9467 ppc64_elf_relocate_section (bfd
*output_bfd
,
9468 struct bfd_link_info
*info
,
9470 asection
*input_section
,
9472 Elf_Internal_Rela
*relocs
,
9473 Elf_Internal_Sym
*local_syms
,
9474 asection
**local_sections
)
9476 struct ppc_link_hash_table
*htab
;
9477 Elf_Internal_Shdr
*symtab_hdr
;
9478 struct elf_link_hash_entry
**sym_hashes
;
9479 Elf_Internal_Rela
*rel
;
9480 Elf_Internal_Rela
*relend
;
9481 Elf_Internal_Rela outrel
;
9483 struct got_entry
**local_got_ents
;
9485 bfd_boolean ret
= TRUE
;
9487 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9488 bfd_boolean is_power4
= FALSE
;
9490 if (info
->relocatable
)
9493 /* Initialize howto table if needed. */
9494 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9497 htab
= ppc_hash_table (info
);
9499 /* Don't relocate stub sections. */
9500 if (input_section
->owner
== htab
->stub_bfd
)
9503 local_got_ents
= elf_local_got_ents (input_bfd
);
9504 TOCstart
= elf_gp (output_bfd
);
9505 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
9506 sym_hashes
= elf_sym_hashes (input_bfd
);
9507 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
9510 relend
= relocs
+ input_section
->reloc_count
;
9511 for (; rel
< relend
; rel
++)
9513 enum elf_ppc64_reloc_type r_type
;
9515 bfd_reloc_status_type r
;
9516 Elf_Internal_Sym
*sym
;
9518 struct elf_link_hash_entry
*h_elf
;
9519 struct ppc_link_hash_entry
*h
;
9520 struct ppc_link_hash_entry
*fdh
;
9521 const char *sym_name
;
9522 unsigned long r_symndx
, toc_symndx
;
9523 char tls_mask
, tls_gd
, tls_type
;
9526 bfd_boolean unresolved_reloc
;
9528 unsigned long insn
, mask
;
9529 struct ppc_stub_hash_entry
*stub_entry
;
9530 bfd_vma max_br_offset
;
9533 r_type
= ELF64_R_TYPE (rel
->r_info
);
9534 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9536 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9537 symbol of the previous ADDR64 reloc. The symbol gives us the
9538 proper TOC base to use. */
9539 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
9541 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
9543 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
9549 unresolved_reloc
= FALSE
;
9552 if (r_symndx
< symtab_hdr
->sh_info
)
9554 /* It's a local symbol. */
9557 sym
= local_syms
+ r_symndx
;
9558 sec
= local_sections
[r_symndx
];
9559 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
9560 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
9561 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
9562 opd_adjust
= get_opd_info (sec
);
9563 if (opd_adjust
!= NULL
)
9565 long adjust
= opd_adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
9569 relocation
+= adjust
;
9574 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
9575 r_symndx
, symtab_hdr
, sym_hashes
,
9576 h_elf
, sec
, relocation
,
9577 unresolved_reloc
, warned
);
9578 sym_name
= h_elf
->root
.root
.string
;
9579 sym_type
= h_elf
->type
;
9581 h
= (struct ppc_link_hash_entry
*) h_elf
;
9583 /* TLS optimizations. Replace instruction sequences and relocs
9584 based on information we collected in tls_optimize. We edit
9585 RELOCS so that --emit-relocs will output something sensible
9586 for the final instruction stream. */
9590 if (IS_PPC64_TLS_RELOC (r_type
))
9593 tls_mask
= h
->tls_mask
;
9594 else if (local_got_ents
!= NULL
)
9597 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
9598 tls_mask
= lgot_masks
[r_symndx
];
9600 if (tls_mask
== 0 && r_type
== R_PPC64_TLS
)
9602 /* Check for toc tls entries. */
9605 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9610 tls_mask
= *toc_tls
;
9614 /* Check that tls relocs are used with tls syms, and non-tls
9615 relocs are used with non-tls syms. */
9617 && r_type
!= R_PPC64_NONE
9619 || h
->elf
.root
.type
== bfd_link_hash_defined
9620 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
9621 && IS_PPC64_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
9623 if (r_type
== R_PPC64_TLS
&& tls_mask
!= 0)
9624 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9627 (*_bfd_error_handler
)
9628 (sym_type
== STT_TLS
9629 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9630 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9633 (long) rel
->r_offset
,
9634 ppc64_elf_howto_table
[r_type
]->name
,
9638 /* Ensure reloc mapping code below stays sane. */
9639 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
9640 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
9641 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
9642 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
9643 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
9644 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
9645 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
9646 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
9647 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
9648 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
9657 case R_PPC64_TOC16_LO
:
9658 case R_PPC64_TOC16_DS
:
9659 case R_PPC64_TOC16_LO_DS
:
9661 /* Check for toc tls entries. */
9665 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9672 tls_mask
= *toc_tls
;
9673 if (r_type
== R_PPC64_TOC16_DS
9674 || r_type
== R_PPC64_TOC16_LO_DS
)
9677 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
9682 /* If we found a GD reloc pair, then we might be
9683 doing a GD->IE transition. */
9686 tls_gd
= TLS_TPRELGD
;
9687 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9688 goto tls_get_addr_check
;
9690 else if (retval
== 3)
9692 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9693 goto tls_get_addr_check
;
9700 case R_PPC64_GOT_TPREL16_DS
:
9701 case R_PPC64_GOT_TPREL16_LO_DS
:
9703 && (tls_mask
& TLS_TPREL
) == 0)
9706 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
9708 insn
|= 0x3c0d0000; /* addis 0,13,0 */
9709 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
9710 r_type
= R_PPC64_TPREL16_HA
;
9711 if (toc_symndx
!= 0)
9713 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9714 /* We changed the symbol. Start over in order to
9715 get h, sym, sec etc. right. */
9720 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9726 && (tls_mask
& TLS_TPREL
) == 0)
9729 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
9730 if ((insn
& ((0x3f << 26) | (31 << 11)))
9731 == ((31 << 26) | (13 << 11)))
9732 rtra
= insn
& ((1 << 26) - (1 << 16));
9733 else if ((insn
& ((0x3f << 26) | (31 << 16)))
9734 == ((31 << 26) | (13 << 16)))
9735 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
9738 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
9741 else if ((insn
& (31 << 1)) == 23 << 1
9742 && ((insn
& (31 << 6)) < 14 << 6
9743 || ((insn
& (31 << 6)) >= 16 << 6
9744 && (insn
& (31 << 6)) < 24 << 6)))
9745 /* load and store indexed -> dform. */
9746 insn
= (32 | ((insn
>> 6) & 31)) << 26;
9747 else if ((insn
& (31 << 1)) == 21 << 1
9748 && (insn
& (0x1a << 6)) == 0)
9749 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9750 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
9751 | ((insn
>> 6) & 1));
9752 else if ((insn
& (31 << 1)) == 21 << 1
9753 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
9755 insn
= (58 << 26) | 2;
9759 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9760 /* Was PPC64_TLS which sits on insn boundary, now
9761 PPC64_TPREL16_LO which is at insn+2. */
9763 r_type
= R_PPC64_TPREL16_LO
;
9764 if (toc_symndx
!= 0)
9766 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9767 /* We changed the symbol. Start over in order to
9768 get h, sym, sec etc. right. */
9773 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9777 case R_PPC64_GOT_TLSGD16_HI
:
9778 case R_PPC64_GOT_TLSGD16_HA
:
9779 tls_gd
= TLS_TPRELGD
;
9780 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9784 case R_PPC64_GOT_TLSLD16_HI
:
9785 case R_PPC64_GOT_TLSLD16_HA
:
9786 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9789 if ((tls_mask
& tls_gd
) != 0)
9790 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
9791 + R_PPC64_GOT_TPREL16_DS
);
9794 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
9796 r_type
= R_PPC64_NONE
;
9798 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9802 case R_PPC64_GOT_TLSGD16
:
9803 case R_PPC64_GOT_TLSGD16_LO
:
9804 tls_gd
= TLS_TPRELGD
;
9805 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9806 goto tls_get_addr_check
;
9809 case R_PPC64_GOT_TLSLD16
:
9810 case R_PPC64_GOT_TLSLD16_LO
:
9811 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9814 if (rel
+ 1 < relend
)
9816 enum elf_ppc64_reloc_type r_type2
;
9817 unsigned long r_symndx2
;
9818 struct elf_link_hash_entry
*h2
;
9819 bfd_vma insn1
, insn2
, insn3
;
9822 /* The next instruction should be a call to
9823 __tls_get_addr. Peek at the reloc to be sure. */
9824 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
9825 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
9826 if (r_symndx2
< symtab_hdr
->sh_info
9827 || (r_type2
!= R_PPC64_REL14
9828 && r_type2
!= R_PPC64_REL14_BRTAKEN
9829 && r_type2
!= R_PPC64_REL14_BRNTAKEN
9830 && r_type2
!= R_PPC64_REL24
))
9833 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
9834 while (h2
->root
.type
== bfd_link_hash_indirect
9835 || h2
->root
.type
== bfd_link_hash_warning
)
9836 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
9837 if (h2
== NULL
|| (h2
!= &htab
->tls_get_addr
->elf
9838 && h2
!= &htab
->tls_get_addr_fd
->elf
))
9841 /* OK, it checks out. Replace the call. */
9842 offset
= rel
[1].r_offset
;
9843 insn1
= bfd_get_32 (output_bfd
,
9844 contents
+ rel
->r_offset
- 2);
9845 insn3
= bfd_get_32 (output_bfd
,
9846 contents
+ offset
+ 4);
9847 if ((tls_mask
& tls_gd
) != 0)
9850 insn1
&= (1 << 26) - (1 << 2);
9851 insn1
|= 58 << 26; /* ld */
9852 insn2
= 0x7c636a14; /* add 3,3,13 */
9853 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
9854 if ((tls_mask
& TLS_EXPLICIT
) == 0)
9855 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
9856 + R_PPC64_GOT_TPREL16_DS
);
9858 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
9859 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9864 insn1
= 0x3c6d0000; /* addis 3,13,0 */
9865 insn2
= 0x38630000; /* addi 3,3,0 */
9868 /* Was an LD reloc. */
9870 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9871 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9873 else if (toc_symndx
!= 0)
9874 r_symndx
= toc_symndx
;
9875 r_type
= R_PPC64_TPREL16_HA
;
9876 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9877 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
9878 R_PPC64_TPREL16_LO
);
9879 rel
[1].r_offset
+= 2;
9882 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
9886 rel
[1].r_offset
+= 4;
9888 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
9889 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
9890 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
9891 if (tls_gd
== 0 || toc_symndx
!= 0)
9893 /* We changed the symbol. Start over in order
9894 to get h, sym, sec etc. right. */
9902 case R_PPC64_DTPMOD64
:
9903 if (rel
+ 1 < relend
9904 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
9905 && rel
[1].r_offset
== rel
->r_offset
+ 8)
9907 if ((tls_mask
& TLS_GD
) == 0)
9909 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
9910 if ((tls_mask
& TLS_TPRELGD
) != 0)
9911 r_type
= R_PPC64_TPREL64
;
9914 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9915 r_type
= R_PPC64_NONE
;
9917 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9922 if ((tls_mask
& TLS_LD
) == 0)
9924 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9925 r_type
= R_PPC64_NONE
;
9926 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9931 case R_PPC64_TPREL64
:
9932 if ((tls_mask
& TLS_TPREL
) == 0)
9934 r_type
= R_PPC64_NONE
;
9935 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9940 /* Handle other relocations that tweak non-addend part of insn. */
9942 max_br_offset
= 1 << 25;
9943 addend
= rel
->r_addend
;
9949 /* Branch taken prediction relocations. */
9950 case R_PPC64_ADDR14_BRTAKEN
:
9951 case R_PPC64_REL14_BRTAKEN
:
9952 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9955 /* Branch not taken prediction relocations. */
9956 case R_PPC64_ADDR14_BRNTAKEN
:
9957 case R_PPC64_REL14_BRNTAKEN
:
9958 insn
|= bfd_get_32 (output_bfd
,
9959 contents
+ rel
->r_offset
) & ~(0x01 << 21);
9963 max_br_offset
= 1 << 15;
9967 /* Calls to functions with a different TOC, such as calls to
9968 shared objects, need to alter the TOC pointer. This is
9969 done using a linkage stub. A REL24 branching to these
9970 linkage stubs needs to be followed by a nop, as the nop
9971 will be replaced with an instruction to restore the TOC
9976 && (((fdh
= h
->oh
) != NULL
9977 && fdh
->elf
.plt
.plist
!= NULL
)
9978 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
9980 && sec
->output_section
!= NULL
9981 && sec
->id
<= htab
->top_id
9982 && (htab
->stub_group
[sec
->id
].toc_off
9983 != htab
->stub_group
[input_section
->id
].toc_off
)))
9984 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
9986 && (stub_entry
->stub_type
== ppc_stub_plt_call
9987 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
9988 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
9990 bfd_boolean can_plt_call
= FALSE
;
9992 if (rel
->r_offset
+ 8 <= input_section
->size
)
9995 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
9997 || nop
== CROR_151515
|| nop
== CROR_313131
)
9999 bfd_put_32 (input_bfd
, LD_R2_40R1
,
10000 contents
+ rel
->r_offset
+ 4);
10001 can_plt_call
= TRUE
;
10007 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
10009 /* If this is a plain branch rather than a branch
10010 and link, don't require a nop. */
10012 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
10014 can_plt_call
= TRUE
;
10017 && strcmp (h
->elf
.root
.root
.string
,
10018 ".__libc_start_main") == 0)
10020 /* Allow crt1 branch to go via a toc adjusting stub. */
10021 can_plt_call
= TRUE
;
10025 if (strcmp (input_section
->output_section
->name
,
10027 || strcmp (input_section
->output_section
->name
,
10029 (*_bfd_error_handler
)
10030 (_("%B(%A+0x%lx): automatic multiple TOCs "
10031 "not supported using your crt files; "
10032 "recompile with -mminimal-toc or upgrade gcc"),
10035 (long) rel
->r_offset
);
10037 (*_bfd_error_handler
)
10038 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10039 "does not allow automatic multiple TOCs; "
10040 "recompile with -mminimal-toc or "
10041 "-fno-optimize-sibling-calls, "
10042 "or make `%s' extern"),
10045 (long) rel
->r_offset
,
10048 bfd_set_error (bfd_error_bad_value
);
10054 && stub_entry
->stub_type
== ppc_stub_plt_call
)
10055 unresolved_reloc
= FALSE
;
10058 if (stub_entry
== NULL
10059 && get_opd_info (sec
) != NULL
)
10061 /* The branch destination is the value of the opd entry. */
10062 bfd_vma off
= (relocation
- sec
->output_section
->vma
10063 - sec
->output_offset
+ rel
->r_addend
);
10064 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
10065 if (dest
!= (bfd_vma
) -1)
10072 /* If the branch is out of reach we ought to have a long
10074 from
= (rel
->r_offset
10075 + input_section
->output_offset
10076 + input_section
->output_section
->vma
);
10078 if (stub_entry
== NULL
10079 && (relocation
+ rel
->r_addend
- from
+ max_br_offset
10080 >= 2 * max_br_offset
)
10081 && r_type
!= R_PPC64_ADDR14_BRTAKEN
10082 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
10083 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
10086 if (stub_entry
!= NULL
)
10088 /* Munge up the value and addend so that we call the stub
10089 rather than the procedure directly. */
10090 relocation
= (stub_entry
->stub_offset
10091 + stub_entry
->stub_sec
->output_offset
10092 + stub_entry
->stub_sec
->output_section
->vma
);
10100 /* Set 'a' bit. This is 0b00010 in BO field for branch
10101 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10102 for branch on CTR insns (BO == 1a00t or 1a01t). */
10103 if ((insn
& (0x14 << 21)) == (0x04 << 21))
10104 insn
|= 0x02 << 21;
10105 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
10106 insn
|= 0x08 << 21;
10112 /* Invert 'y' bit if not the default. */
10113 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
10114 insn
^= 0x01 << 21;
10117 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
10120 /* NOP out calls to undefined weak functions.
10121 We can thus call a weak function without first
10122 checking whether the function is defined. */
10124 && h
->elf
.root
.type
== bfd_link_hash_undefweak
10125 && r_type
== R_PPC64_REL24
10127 && rel
->r_addend
== 0)
10129 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
10135 /* Set `addend'. */
10140 (*_bfd_error_handler
)
10141 (_("%B: unknown relocation type %d for symbol %s"),
10142 input_bfd
, (int) r_type
, sym_name
);
10144 bfd_set_error (bfd_error_bad_value
);
10150 case R_PPC64_GNU_VTINHERIT
:
10151 case R_PPC64_GNU_VTENTRY
:
10154 /* GOT16 relocations. Like an ADDR16 using the symbol's
10155 address in the GOT as relocation value instead of the
10156 symbol's value itself. Also, create a GOT entry for the
10157 symbol and put the symbol value there. */
10158 case R_PPC64_GOT_TLSGD16
:
10159 case R_PPC64_GOT_TLSGD16_LO
:
10160 case R_PPC64_GOT_TLSGD16_HI
:
10161 case R_PPC64_GOT_TLSGD16_HA
:
10162 tls_type
= TLS_TLS
| TLS_GD
;
10165 case R_PPC64_GOT_TLSLD16
:
10166 case R_PPC64_GOT_TLSLD16_LO
:
10167 case R_PPC64_GOT_TLSLD16_HI
:
10168 case R_PPC64_GOT_TLSLD16_HA
:
10169 tls_type
= TLS_TLS
| TLS_LD
;
10172 case R_PPC64_GOT_TPREL16_DS
:
10173 case R_PPC64_GOT_TPREL16_LO_DS
:
10174 case R_PPC64_GOT_TPREL16_HI
:
10175 case R_PPC64_GOT_TPREL16_HA
:
10176 tls_type
= TLS_TLS
| TLS_TPREL
;
10179 case R_PPC64_GOT_DTPREL16_DS
:
10180 case R_PPC64_GOT_DTPREL16_LO_DS
:
10181 case R_PPC64_GOT_DTPREL16_HI
:
10182 case R_PPC64_GOT_DTPREL16_HA
:
10183 tls_type
= TLS_TLS
| TLS_DTPREL
;
10186 case R_PPC64_GOT16
:
10187 case R_PPC64_GOT16_LO
:
10188 case R_PPC64_GOT16_HI
:
10189 case R_PPC64_GOT16_HA
:
10190 case R_PPC64_GOT16_DS
:
10191 case R_PPC64_GOT16_LO_DS
:
10194 /* Relocation is to the entry for this symbol in the global
10199 unsigned long indx
= 0;
10201 if (tls_type
== (TLS_TLS
| TLS_LD
)
10203 || !h
->elf
.def_dynamic
))
10204 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
10207 struct got_entry
*ent
;
10211 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
10212 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
10215 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
10216 /* This is actually a static link, or it is a
10217 -Bsymbolic link and the symbol is defined
10218 locally, or the symbol was forced to be local
10219 because of a version file. */
10223 indx
= h
->elf
.dynindx
;
10224 unresolved_reloc
= FALSE
;
10226 ent
= h
->elf
.got
.glist
;
10230 if (local_got_ents
== NULL
)
10232 ent
= local_got_ents
[r_symndx
];
10235 for (; ent
!= NULL
; ent
= ent
->next
)
10236 if (ent
->addend
== rel
->r_addend
10237 && ent
->owner
== input_bfd
10238 && ent
->tls_type
== tls_type
)
10242 offp
= &ent
->got
.offset
;
10245 got
= ppc64_elf_tdata (input_bfd
)->got
;
10249 /* The offset must always be a multiple of 8. We use the
10250 least significant bit to record whether we have already
10251 processed this entry. */
10253 if ((off
& 1) != 0)
10257 /* Generate relocs for the dynamic linker, except in
10258 the case of TLSLD where we'll use one entry per
10260 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
10263 if ((info
->shared
|| indx
!= 0)
10265 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10266 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
10268 outrel
.r_offset
= (got
->output_section
->vma
10269 + got
->output_offset
10271 outrel
.r_addend
= rel
->r_addend
;
10272 if (tls_type
& (TLS_LD
| TLS_GD
))
10274 outrel
.r_addend
= 0;
10275 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
10276 if (tls_type
== (TLS_TLS
| TLS_GD
))
10278 loc
= relgot
->contents
;
10279 loc
+= (relgot
->reloc_count
++
10280 * sizeof (Elf64_External_Rela
));
10281 bfd_elf64_swap_reloca_out (output_bfd
,
10283 outrel
.r_offset
+= 8;
10284 outrel
.r_addend
= rel
->r_addend
;
10286 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10289 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
10290 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10291 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10292 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
10293 else if (indx
== 0)
10295 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
10297 /* Write the .got section contents for the sake
10299 loc
= got
->contents
+ off
;
10300 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
10304 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
10306 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
10308 outrel
.r_addend
+= relocation
;
10309 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
10310 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
10312 loc
= relgot
->contents
;
10313 loc
+= (relgot
->reloc_count
++
10314 * sizeof (Elf64_External_Rela
));
10315 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10318 /* Init the .got section contents here if we're not
10319 emitting a reloc. */
10322 relocation
+= rel
->r_addend
;
10323 if (tls_type
== (TLS_TLS
| TLS_LD
))
10325 else if (tls_type
!= 0)
10327 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10328 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10329 relocation
+= DTP_OFFSET
- TP_OFFSET
;
10331 if (tls_type
== (TLS_TLS
| TLS_GD
))
10333 bfd_put_64 (output_bfd
, relocation
,
10334 got
->contents
+ off
+ 8);
10339 bfd_put_64 (output_bfd
, relocation
,
10340 got
->contents
+ off
);
10344 if (off
>= (bfd_vma
) -2)
10347 relocation
= got
->output_offset
+ off
;
10349 /* TOC base (r2) is TOC start plus 0x8000. */
10350 addend
= -TOC_BASE_OFF
;
10354 case R_PPC64_PLT16_HA
:
10355 case R_PPC64_PLT16_HI
:
10356 case R_PPC64_PLT16_LO
:
10357 case R_PPC64_PLT32
:
10358 case R_PPC64_PLT64
:
10359 /* Relocation is to the entry for this symbol in the
10360 procedure linkage table. */
10362 /* Resolve a PLT reloc against a local symbol directly,
10363 without using the procedure linkage table. */
10367 /* It's possible that we didn't make a PLT entry for this
10368 symbol. This happens when statically linking PIC code,
10369 or when using -Bsymbolic. Go find a match if there is a
10371 if (htab
->plt
!= NULL
)
10373 struct plt_entry
*ent
;
10374 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10375 if (ent
->addend
== rel
->r_addend
10376 && ent
->plt
.offset
!= (bfd_vma
) -1)
10378 relocation
= (htab
->plt
->output_section
->vma
10379 + htab
->plt
->output_offset
10380 + ent
->plt
.offset
);
10381 unresolved_reloc
= FALSE
;
10387 /* Relocation value is TOC base. */
10388 relocation
= TOCstart
;
10390 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
10391 else if (unresolved_reloc
)
10393 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
10394 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
10396 unresolved_reloc
= TRUE
;
10399 /* TOC16 relocs. We want the offset relative to the TOC base,
10400 which is the address of the start of the TOC plus 0x8000.
10401 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10403 case R_PPC64_TOC16
:
10404 case R_PPC64_TOC16_LO
:
10405 case R_PPC64_TOC16_HI
:
10406 case R_PPC64_TOC16_DS
:
10407 case R_PPC64_TOC16_LO_DS
:
10408 case R_PPC64_TOC16_HA
:
10409 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
10412 /* Relocate against the beginning of the section. */
10413 case R_PPC64_SECTOFF
:
10414 case R_PPC64_SECTOFF_LO
:
10415 case R_PPC64_SECTOFF_HI
:
10416 case R_PPC64_SECTOFF_DS
:
10417 case R_PPC64_SECTOFF_LO_DS
:
10418 case R_PPC64_SECTOFF_HA
:
10420 addend
-= sec
->output_section
->vma
;
10423 case R_PPC64_REL14
:
10424 case R_PPC64_REL14_BRNTAKEN
:
10425 case R_PPC64_REL14_BRTAKEN
:
10426 case R_PPC64_REL24
:
10429 case R_PPC64_TPREL16
:
10430 case R_PPC64_TPREL16_LO
:
10431 case R_PPC64_TPREL16_HI
:
10432 case R_PPC64_TPREL16_HA
:
10433 case R_PPC64_TPREL16_DS
:
10434 case R_PPC64_TPREL16_LO_DS
:
10435 case R_PPC64_TPREL16_HIGHER
:
10436 case R_PPC64_TPREL16_HIGHERA
:
10437 case R_PPC64_TPREL16_HIGHEST
:
10438 case R_PPC64_TPREL16_HIGHESTA
:
10439 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10441 /* The TPREL16 relocs shouldn't really be used in shared
10442 libs as they will result in DT_TEXTREL being set, but
10443 support them anyway. */
10447 case R_PPC64_DTPREL16
:
10448 case R_PPC64_DTPREL16_LO
:
10449 case R_PPC64_DTPREL16_HI
:
10450 case R_PPC64_DTPREL16_HA
:
10451 case R_PPC64_DTPREL16_DS
:
10452 case R_PPC64_DTPREL16_LO_DS
:
10453 case R_PPC64_DTPREL16_HIGHER
:
10454 case R_PPC64_DTPREL16_HIGHERA
:
10455 case R_PPC64_DTPREL16_HIGHEST
:
10456 case R_PPC64_DTPREL16_HIGHESTA
:
10457 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10460 case R_PPC64_DTPMOD64
:
10465 case R_PPC64_TPREL64
:
10466 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10469 case R_PPC64_DTPREL64
:
10470 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10473 /* Relocations that may need to be propagated if this is a
10475 case R_PPC64_REL30
:
10476 case R_PPC64_REL32
:
10477 case R_PPC64_REL64
:
10478 case R_PPC64_ADDR14
:
10479 case R_PPC64_ADDR14_BRNTAKEN
:
10480 case R_PPC64_ADDR14_BRTAKEN
:
10481 case R_PPC64_ADDR16
:
10482 case R_PPC64_ADDR16_DS
:
10483 case R_PPC64_ADDR16_HA
:
10484 case R_PPC64_ADDR16_HI
:
10485 case R_PPC64_ADDR16_HIGHER
:
10486 case R_PPC64_ADDR16_HIGHERA
:
10487 case R_PPC64_ADDR16_HIGHEST
:
10488 case R_PPC64_ADDR16_HIGHESTA
:
10489 case R_PPC64_ADDR16_LO
:
10490 case R_PPC64_ADDR16_LO_DS
:
10491 case R_PPC64_ADDR24
:
10492 case R_PPC64_ADDR32
:
10493 case R_PPC64_ADDR64
:
10494 case R_PPC64_UADDR16
:
10495 case R_PPC64_UADDR32
:
10496 case R_PPC64_UADDR64
:
10497 /* r_symndx will be zero only for relocs against symbols
10498 from removed linkonce sections, or sections discarded by
10499 a linker script. */
10506 if ((input_section
->flags
& SEC_ALLOC
) == 0)
10509 if (NO_OPD_RELOCS
&& is_opd
)
10514 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10515 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
10516 && (MUST_BE_DYN_RELOC (r_type
)
10517 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
10518 || (ELIMINATE_COPY_RELOCS
10521 && h
->elf
.dynindx
!= -1
10522 && !h
->elf
.non_got_ref
10523 && h
->elf
.def_dynamic
10524 && !h
->elf
.def_regular
))
10526 Elf_Internal_Rela outrel
;
10527 bfd_boolean skip
, relocate
;
10532 /* When generating a dynamic object, these relocations
10533 are copied into the output file to be resolved at run
10539 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
10540 input_section
, rel
->r_offset
);
10541 if (out_off
== (bfd_vma
) -1)
10543 else if (out_off
== (bfd_vma
) -2)
10544 skip
= TRUE
, relocate
= TRUE
;
10545 out_off
+= (input_section
->output_section
->vma
10546 + input_section
->output_offset
);
10547 outrel
.r_offset
= out_off
;
10548 outrel
.r_addend
= rel
->r_addend
;
10550 /* Optimize unaligned reloc use. */
10551 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
10552 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
10553 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
10554 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
10555 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
10556 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
10557 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
10558 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
10559 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
10562 memset (&outrel
, 0, sizeof outrel
);
10563 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
10565 && r_type
!= R_PPC64_TOC
)
10566 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
10569 /* This symbol is local, or marked to become local,
10570 or this is an opd section reloc which must point
10571 at a local function. */
10572 outrel
.r_addend
+= relocation
;
10573 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
10575 if (is_opd
&& h
!= NULL
)
10577 /* Lie about opd entries. This case occurs
10578 when building shared libraries and we
10579 reference a function in another shared
10580 lib. The same thing happens for a weak
10581 definition in an application that's
10582 overridden by a strong definition in a
10583 shared lib. (I believe this is a generic
10584 bug in binutils handling of weak syms.)
10585 In these cases we won't use the opd
10586 entry in this lib. */
10587 unresolved_reloc
= FALSE
;
10589 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10591 /* We need to relocate .opd contents for ld.so.
10592 Prelink also wants simple and consistent rules
10593 for relocs. This make all RELATIVE relocs have
10594 *r_offset equal to r_addend. */
10601 if (bfd_is_abs_section (sec
))
10603 else if (sec
== NULL
|| sec
->owner
== NULL
)
10605 bfd_set_error (bfd_error_bad_value
);
10612 osec
= sec
->output_section
;
10613 indx
= elf_section_data (osec
)->dynindx
;
10615 /* We are turning this relocation into one
10616 against a section symbol, so subtract out
10617 the output section's address but not the
10618 offset of the input section in the output
10620 outrel
.r_addend
-= osec
->vma
;
10623 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
10627 sreloc
= elf_section_data (input_section
)->sreloc
;
10628 if (sreloc
== NULL
)
10631 loc
= sreloc
->contents
;
10632 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10633 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10635 /* If this reloc is against an external symbol, it will
10636 be computed at runtime, so there's no need to do
10637 anything now. However, for the sake of prelink ensure
10638 that the section contents are a known value. */
10641 unresolved_reloc
= FALSE
;
10642 /* The value chosen here is quite arbitrary as ld.so
10643 ignores section contents except for the special
10644 case of .opd where the contents might be accessed
10645 before relocation. Choose zero, as that won't
10646 cause reloc overflow. */
10649 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10650 to improve backward compatibility with older
10652 if (r_type
== R_PPC64_ADDR64
)
10653 addend
= outrel
.r_addend
;
10654 /* Adjust pc_relative relocs to have zero in *r_offset. */
10655 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
10656 addend
= (input_section
->output_section
->vma
10657 + input_section
->output_offset
10664 case R_PPC64_GLOB_DAT
:
10665 case R_PPC64_JMP_SLOT
:
10666 case R_PPC64_RELATIVE
:
10667 /* We shouldn't ever see these dynamic relocs in relocatable
10669 /* Fall through. */
10671 case R_PPC64_PLTGOT16
:
10672 case R_PPC64_PLTGOT16_DS
:
10673 case R_PPC64_PLTGOT16_HA
:
10674 case R_PPC64_PLTGOT16_HI
:
10675 case R_PPC64_PLTGOT16_LO
:
10676 case R_PPC64_PLTGOT16_LO_DS
:
10677 case R_PPC64_PLTREL32
:
10678 case R_PPC64_PLTREL64
:
10679 /* These ones haven't been implemented yet. */
10681 (*_bfd_error_handler
)
10682 (_("%B: relocation %s is not supported for symbol %s."),
10684 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
10686 bfd_set_error (bfd_error_invalid_operation
);
10691 /* Do any further special processing. */
10697 case R_PPC64_ADDR16_HA
:
10698 case R_PPC64_ADDR16_HIGHERA
:
10699 case R_PPC64_ADDR16_HIGHESTA
:
10700 case R_PPC64_GOT16_HA
:
10701 case R_PPC64_PLTGOT16_HA
:
10702 case R_PPC64_PLT16_HA
:
10703 case R_PPC64_TOC16_HA
:
10704 case R_PPC64_SECTOFF_HA
:
10705 case R_PPC64_TPREL16_HA
:
10706 case R_PPC64_DTPREL16_HA
:
10707 case R_PPC64_GOT_TLSGD16_HA
:
10708 case R_PPC64_GOT_TLSLD16_HA
:
10709 case R_PPC64_GOT_TPREL16_HA
:
10710 case R_PPC64_GOT_DTPREL16_HA
:
10711 case R_PPC64_TPREL16_HIGHER
:
10712 case R_PPC64_TPREL16_HIGHERA
:
10713 case R_PPC64_TPREL16_HIGHEST
:
10714 case R_PPC64_TPREL16_HIGHESTA
:
10715 case R_PPC64_DTPREL16_HIGHER
:
10716 case R_PPC64_DTPREL16_HIGHERA
:
10717 case R_PPC64_DTPREL16_HIGHEST
:
10718 case R_PPC64_DTPREL16_HIGHESTA
:
10719 /* It's just possible that this symbol is a weak symbol
10720 that's not actually defined anywhere. In that case,
10721 'sec' would be NULL, and we should leave the symbol
10722 alone (it will be set to zero elsewhere in the link). */
10724 /* Add 0x10000 if sign bit in 0:15 is set.
10725 Bits 0:15 are not used. */
10729 case R_PPC64_ADDR16_DS
:
10730 case R_PPC64_ADDR16_LO_DS
:
10731 case R_PPC64_GOT16_DS
:
10732 case R_PPC64_GOT16_LO_DS
:
10733 case R_PPC64_PLT16_LO_DS
:
10734 case R_PPC64_SECTOFF_DS
:
10735 case R_PPC64_SECTOFF_LO_DS
:
10736 case R_PPC64_TOC16_DS
:
10737 case R_PPC64_TOC16_LO_DS
:
10738 case R_PPC64_PLTGOT16_DS
:
10739 case R_PPC64_PLTGOT16_LO_DS
:
10740 case R_PPC64_GOT_TPREL16_DS
:
10741 case R_PPC64_GOT_TPREL16_LO_DS
:
10742 case R_PPC64_GOT_DTPREL16_DS
:
10743 case R_PPC64_GOT_DTPREL16_LO_DS
:
10744 case R_PPC64_TPREL16_DS
:
10745 case R_PPC64_TPREL16_LO_DS
:
10746 case R_PPC64_DTPREL16_DS
:
10747 case R_PPC64_DTPREL16_LO_DS
:
10748 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
10750 /* If this reloc is against an lq insn, then the value must be
10751 a multiple of 16. This is somewhat of a hack, but the
10752 "correct" way to do this by defining _DQ forms of all the
10753 _DS relocs bloats all reloc switches in this file. It
10754 doesn't seem to make much sense to use any of these relocs
10755 in data, so testing the insn should be safe. */
10756 if ((insn
& (0x3f << 26)) == (56u << 26))
10758 if (((relocation
+ addend
) & mask
) != 0)
10760 (*_bfd_error_handler
)
10761 (_("%B: error: relocation %s not a multiple of %d"),
10763 ppc64_elf_howto_table
[r_type
]->name
,
10765 bfd_set_error (bfd_error_bad_value
);
10772 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10773 because such sections are not SEC_ALLOC and thus ld.so will
10774 not process them. */
10775 if (unresolved_reloc
10776 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
10777 && h
->elf
.def_dynamic
))
10779 (*_bfd_error_handler
)
10780 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10783 (long) rel
->r_offset
,
10784 ppc64_elf_howto_table
[(int) r_type
]->name
,
10785 h
->elf
.root
.root
.string
);
10789 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
10797 if (r
!= bfd_reloc_ok
)
10799 if (sym_name
== NULL
)
10800 sym_name
= "(null)";
10801 if (r
== bfd_reloc_overflow
)
10806 && h
->elf
.root
.type
== bfd_link_hash_undefweak
10807 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
10809 /* Assume this is a call protected by other code that
10810 detects the symbol is undefined. If this is the case,
10811 we can safely ignore the overflow. If not, the
10812 program is hosed anyway, and a little warning isn't
10818 if (!((*info
->callbacks
->reloc_overflow
)
10819 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
10820 ppc64_elf_howto_table
[r_type
]->name
,
10821 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
)))
10826 (*_bfd_error_handler
)
10827 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10830 (long) rel
->r_offset
,
10831 ppc64_elf_howto_table
[r_type
]->name
,
10839 /* If we're emitting relocations, then shortly after this function
10840 returns, reloc offsets and addends for this section will be
10841 adjusted. Worse, reloc symbol indices will be for the output
10842 file rather than the input. Save a copy of the relocs for
10843 opd_entry_value. */
10844 if (is_opd
&& info
->emitrelocations
)
10847 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
10848 rel
= bfd_alloc (input_bfd
, amt
);
10849 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
10850 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
10853 memcpy (rel
, relocs
, amt
);
10858 /* Adjust the value of any local symbols in opd sections. */
10861 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
10862 const char *name ATTRIBUTE_UNUSED
,
10863 Elf_Internal_Sym
*elfsym
,
10864 asection
*input_sec
,
10865 struct elf_link_hash_entry
*h
)
10867 long *opd_adjust
, adjust
;
10873 opd_adjust
= get_opd_info (input_sec
);
10874 if (opd_adjust
== NULL
)
10877 value
= elfsym
->st_value
- input_sec
->output_offset
;
10878 if (!info
->relocatable
)
10879 value
-= input_sec
->output_section
->vma
;
10881 adjust
= opd_adjust
[value
/ 8];
10883 elfsym
->st_value
= 0;
10885 elfsym
->st_value
+= adjust
;
10889 /* Finish up dynamic symbol handling. We set the contents of various
10890 dynamic sections here. */
10893 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
10894 struct bfd_link_info
*info
,
10895 struct elf_link_hash_entry
*h
,
10896 Elf_Internal_Sym
*sym
)
10898 struct ppc_link_hash_table
*htab
;
10900 struct plt_entry
*ent
;
10901 Elf_Internal_Rela rela
;
10904 htab
= ppc_hash_table (info
);
10905 dynobj
= htab
->elf
.dynobj
;
10907 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10908 if (ent
->plt
.offset
!= (bfd_vma
) -1)
10910 /* This symbol has an entry in the procedure linkage
10911 table. Set it up. */
10913 if (htab
->plt
== NULL
10914 || htab
->relplt
== NULL
10915 || htab
->glink
== NULL
)
10918 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10919 fill in the PLT entry. */
10920 rela
.r_offset
= (htab
->plt
->output_section
->vma
10921 + htab
->plt
->output_offset
10922 + ent
->plt
.offset
);
10923 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
10924 rela
.r_addend
= ent
->addend
;
10926 loc
= htab
->relplt
->contents
;
10927 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
10928 * sizeof (Elf64_External_Rela
));
10929 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10934 Elf_Internal_Rela rela
;
10937 /* This symbol needs a copy reloc. Set it up. */
10939 if (h
->dynindx
== -1
10940 || (h
->root
.type
!= bfd_link_hash_defined
10941 && h
->root
.type
!= bfd_link_hash_defweak
)
10942 || htab
->relbss
== NULL
)
10945 rela
.r_offset
= (h
->root
.u
.def
.value
10946 + h
->root
.u
.def
.section
->output_section
->vma
10947 + h
->root
.u
.def
.section
->output_offset
);
10948 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
10950 loc
= htab
->relbss
->contents
;
10951 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10952 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10955 /* Mark some specially defined symbols as absolute. */
10956 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
10957 sym
->st_shndx
= SHN_ABS
;
10962 /* Used to decide how to sort relocs in an optimal manner for the
10963 dynamic linker, before writing them out. */
10965 static enum elf_reloc_type_class
10966 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
10968 enum elf_ppc64_reloc_type r_type
;
10970 r_type
= ELF64_R_TYPE (rela
->r_info
);
10973 case R_PPC64_RELATIVE
:
10974 return reloc_class_relative
;
10975 case R_PPC64_JMP_SLOT
:
10976 return reloc_class_plt
;
10978 return reloc_class_copy
;
10980 return reloc_class_normal
;
10984 /* Finish up the dynamic sections. */
10987 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
10988 struct bfd_link_info
*info
)
10990 struct ppc_link_hash_table
*htab
;
10994 htab
= ppc_hash_table (info
);
10995 dynobj
= htab
->elf
.dynobj
;
10996 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
10998 if (htab
->elf
.dynamic_sections_created
)
11000 Elf64_External_Dyn
*dyncon
, *dynconend
;
11002 if (sdyn
== NULL
|| htab
->got
== NULL
)
11005 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
11006 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
11007 for (; dyncon
< dynconend
; dyncon
++)
11009 Elf_Internal_Dyn dyn
;
11012 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
11019 case DT_PPC64_GLINK
:
11021 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11022 /* We stupidly defined DT_PPC64_GLINK to be the start
11023 of glink rather than the first entry point, which is
11024 what ld.so needs, and now have a bigger stub to
11025 support automatic multiple TOCs. */
11026 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
11030 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11033 dyn
.d_un
.d_ptr
= s
->vma
;
11036 case DT_PPC64_OPDSZ
:
11037 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11040 dyn
.d_un
.d_val
= s
->size
;
11045 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11050 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11054 dyn
.d_un
.d_val
= htab
->relplt
->size
;
11058 /* Don't count procedure linkage table relocs in the
11059 overall reloc count. */
11063 dyn
.d_un
.d_val
-= s
->size
;
11067 /* We may not be using the standard ELF linker script.
11068 If .rela.plt is the first .rela section, we adjust
11069 DT_RELA to not include it. */
11073 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
11075 dyn
.d_un
.d_ptr
+= s
->size
;
11079 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11083 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
11085 /* Fill in the first entry in the global offset table.
11086 We use it to hold the link-time TOCbase. */
11087 bfd_put_64 (output_bfd
,
11088 elf_gp (output_bfd
) + TOC_BASE_OFF
,
11089 htab
->got
->contents
);
11091 /* Set .got entry size. */
11092 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
11095 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
11097 /* Set .plt entry size. */
11098 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
11102 /* We need to handle writing out multiple GOT sections ourselves,
11103 since we didn't add them to DYNOBJ. We know dynobj is the first
11105 while ((dynobj
= dynobj
->link_next
) != NULL
)
11109 if (!is_ppc64_elf_target (dynobj
->xvec
))
11112 s
= ppc64_elf_tdata (dynobj
)->got
;
11115 && s
->output_section
!= bfd_abs_section_ptr
11116 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
11117 s
->contents
, s
->output_offset
,
11120 s
= ppc64_elf_tdata (dynobj
)->relgot
;
11123 && s
->output_section
!= bfd_abs_section_ptr
11124 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
11125 s
->contents
, s
->output_offset
,
11133 #include "elf64-target.h"