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
)
4369 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4370 while (h
->root
.type
== bfd_link_hash_indirect
4371 || h
->root
.type
== bfd_link_hash_warning
)
4372 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4375 r_type
= ELF64_R_TYPE (rel
->r_info
);
4378 case R_PPC64_GOT_TLSLD16
:
4379 case R_PPC64_GOT_TLSLD16_LO
:
4380 case R_PPC64_GOT_TLSLD16_HI
:
4381 case R_PPC64_GOT_TLSLD16_HA
:
4382 ppc64_tlsld_got (abfd
)->refcount
+= 1;
4383 tls_type
= TLS_TLS
| TLS_LD
;
4386 case R_PPC64_GOT_TLSGD16
:
4387 case R_PPC64_GOT_TLSGD16_LO
:
4388 case R_PPC64_GOT_TLSGD16_HI
:
4389 case R_PPC64_GOT_TLSGD16_HA
:
4390 tls_type
= TLS_TLS
| TLS_GD
;
4393 case R_PPC64_GOT_TPREL16_DS
:
4394 case R_PPC64_GOT_TPREL16_LO_DS
:
4395 case R_PPC64_GOT_TPREL16_HI
:
4396 case R_PPC64_GOT_TPREL16_HA
:
4398 info
->flags
|= DF_STATIC_TLS
;
4399 tls_type
= TLS_TLS
| TLS_TPREL
;
4402 case R_PPC64_GOT_DTPREL16_DS
:
4403 case R_PPC64_GOT_DTPREL16_LO_DS
:
4404 case R_PPC64_GOT_DTPREL16_HI
:
4405 case R_PPC64_GOT_DTPREL16_HA
:
4406 tls_type
= TLS_TLS
| TLS_DTPREL
;
4408 sec
->has_tls_reloc
= 1;
4412 case R_PPC64_GOT16_DS
:
4413 case R_PPC64_GOT16_HA
:
4414 case R_PPC64_GOT16_HI
:
4415 case R_PPC64_GOT16_LO
:
4416 case R_PPC64_GOT16_LO_DS
:
4417 /* This symbol requires a global offset table entry. */
4418 sec
->has_toc_reloc
= 1;
4419 if (ppc64_elf_tdata (abfd
)->got
== NULL
4420 && !create_got_section (abfd
, info
))
4425 struct ppc_link_hash_entry
*eh
;
4426 struct got_entry
*ent
;
4428 eh
= (struct ppc_link_hash_entry
*) h
;
4429 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4430 if (ent
->addend
== rel
->r_addend
4431 && ent
->owner
== abfd
4432 && ent
->tls_type
== tls_type
)
4436 bfd_size_type amt
= sizeof (*ent
);
4437 ent
= bfd_alloc (abfd
, amt
);
4440 ent
->next
= eh
->elf
.got
.glist
;
4441 ent
->addend
= rel
->r_addend
;
4443 ent
->tls_type
= tls_type
;
4444 ent
->got
.refcount
= 0;
4445 eh
->elf
.got
.glist
= ent
;
4447 ent
->got
.refcount
+= 1;
4448 eh
->tls_mask
|= tls_type
;
4451 /* This is a global offset table entry for a local symbol. */
4452 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4453 rel
->r_addend
, tls_type
))
4457 case R_PPC64_PLT16_HA
:
4458 case R_PPC64_PLT16_HI
:
4459 case R_PPC64_PLT16_LO
:
4462 /* This symbol requires a procedure linkage table entry. We
4463 actually build the entry in adjust_dynamic_symbol,
4464 because this might be a case of linking PIC code without
4465 linking in any dynamic objects, in which case we don't
4466 need to generate a procedure linkage table after all. */
4469 /* It does not make sense to have a procedure linkage
4470 table entry for a local symbol. */
4471 bfd_set_error (bfd_error_bad_value
);
4475 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4480 /* The following relocations don't need to propagate the
4481 relocation if linking a shared object since they are
4482 section relative. */
4483 case R_PPC64_SECTOFF
:
4484 case R_PPC64_SECTOFF_LO
:
4485 case R_PPC64_SECTOFF_HI
:
4486 case R_PPC64_SECTOFF_HA
:
4487 case R_PPC64_SECTOFF_DS
:
4488 case R_PPC64_SECTOFF_LO_DS
:
4489 case R_PPC64_DTPREL16
:
4490 case R_PPC64_DTPREL16_LO
:
4491 case R_PPC64_DTPREL16_HI
:
4492 case R_PPC64_DTPREL16_HA
:
4493 case R_PPC64_DTPREL16_DS
:
4494 case R_PPC64_DTPREL16_LO_DS
:
4495 case R_PPC64_DTPREL16_HIGHER
:
4496 case R_PPC64_DTPREL16_HIGHERA
:
4497 case R_PPC64_DTPREL16_HIGHEST
:
4498 case R_PPC64_DTPREL16_HIGHESTA
:
4503 case R_PPC64_TOC16_LO
:
4504 case R_PPC64_TOC16_HI
:
4505 case R_PPC64_TOC16_HA
:
4506 case R_PPC64_TOC16_DS
:
4507 case R_PPC64_TOC16_LO_DS
:
4508 sec
->has_toc_reloc
= 1;
4511 /* This relocation describes the C++ object vtable hierarchy.
4512 Reconstruct it for later use during GC. */
4513 case R_PPC64_GNU_VTINHERIT
:
4514 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4518 /* This relocation describes which C++ vtable entries are actually
4519 used. Record for later use during GC. */
4520 case R_PPC64_GNU_VTENTRY
:
4521 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4526 case R_PPC64_REL14_BRTAKEN
:
4527 case R_PPC64_REL14_BRNTAKEN
:
4528 htab
->has_14bit_branch
= 1;
4534 /* We may need a .plt entry if the function this reloc
4535 refers to is in a shared lib. */
4536 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4539 if (h
== &htab
->tls_get_addr
->elf
4540 || h
== &htab
->tls_get_addr_fd
->elf
)
4541 sec
->has_tls_reloc
= 1;
4542 else if (htab
->tls_get_addr
== NULL
4543 && !strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
4544 && (h
->root
.root
.string
[15] == 0
4545 || h
->root
.root
.string
[15] == '@'))
4547 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) h
;
4548 sec
->has_tls_reloc
= 1;
4550 else if (htab
->tls_get_addr_fd
== NULL
4551 && !strncmp (h
->root
.root
.string
, "__tls_get_addr", 14)
4552 && (h
->root
.root
.string
[14] == 0
4553 || h
->root
.root
.string
[14] == '@'))
4555 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) h
;
4556 sec
->has_tls_reloc
= 1;
4561 case R_PPC64_TPREL64
:
4562 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4564 info
->flags
|= DF_STATIC_TLS
;
4567 case R_PPC64_DTPMOD64
:
4568 if (rel
+ 1 < rel_end
4569 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4570 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4571 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4573 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4576 case R_PPC64_DTPREL64
:
4577 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4579 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4580 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4581 /* This is the second reloc of a dtpmod, dtprel pair.
4582 Don't mark with TLS_DTPREL. */
4586 sec
->has_tls_reloc
= 1;
4589 struct ppc_link_hash_entry
*eh
;
4590 eh
= (struct ppc_link_hash_entry
*) h
;
4591 eh
->tls_mask
|= tls_type
;
4594 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4595 rel
->r_addend
, tls_type
))
4598 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4600 /* One extra to simplify get_tls_mask. */
4601 bfd_size_type amt
= sec
->size
* sizeof (unsigned) / 8 + 1;
4602 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
4603 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4606 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4607 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
4609 /* Mark the second slot of a GD or LD entry.
4610 -1 to indicate GD and -2 to indicate LD. */
4611 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4612 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
4613 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4614 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
4617 case R_PPC64_TPREL16
:
4618 case R_PPC64_TPREL16_LO
:
4619 case R_PPC64_TPREL16_HI
:
4620 case R_PPC64_TPREL16_HA
:
4621 case R_PPC64_TPREL16_DS
:
4622 case R_PPC64_TPREL16_LO_DS
:
4623 case R_PPC64_TPREL16_HIGHER
:
4624 case R_PPC64_TPREL16_HIGHERA
:
4625 case R_PPC64_TPREL16_HIGHEST
:
4626 case R_PPC64_TPREL16_HIGHESTA
:
4629 info
->flags
|= DF_STATIC_TLS
;
4634 case R_PPC64_ADDR64
:
4635 if (opd_sym_map
!= NULL
4636 && rel
+ 1 < rel_end
4637 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
4641 if (h
->root
.root
.string
[0] == '.'
4642 && h
->root
.root
.string
[1] != 0
4643 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
4646 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
4652 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
4657 opd_sym_map
[rel
->r_offset
/ 8] = s
;
4665 case R_PPC64_ADDR14
:
4666 case R_PPC64_ADDR14_BRNTAKEN
:
4667 case R_PPC64_ADDR14_BRTAKEN
:
4668 case R_PPC64_ADDR16
:
4669 case R_PPC64_ADDR16_DS
:
4670 case R_PPC64_ADDR16_HA
:
4671 case R_PPC64_ADDR16_HI
:
4672 case R_PPC64_ADDR16_HIGHER
:
4673 case R_PPC64_ADDR16_HIGHERA
:
4674 case R_PPC64_ADDR16_HIGHEST
:
4675 case R_PPC64_ADDR16_HIGHESTA
:
4676 case R_PPC64_ADDR16_LO
:
4677 case R_PPC64_ADDR16_LO_DS
:
4678 case R_PPC64_ADDR24
:
4679 case R_PPC64_ADDR32
:
4680 case R_PPC64_UADDR16
:
4681 case R_PPC64_UADDR32
:
4682 case R_PPC64_UADDR64
:
4684 if (h
!= NULL
&& !info
->shared
)
4685 /* We may need a copy reloc. */
4688 /* Don't propagate .opd relocs. */
4689 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
4692 /* If we are creating a shared library, and this is a reloc
4693 against a global symbol, or a non PC relative reloc
4694 against a local symbol, then we need to copy the reloc
4695 into the shared library. However, if we are linking with
4696 -Bsymbolic, we do not need to copy a reloc against a
4697 global symbol which is defined in an object we are
4698 including in the link (i.e., DEF_REGULAR is set). At
4699 this point we have not seen all the input files, so it is
4700 possible that DEF_REGULAR is not set now but will be set
4701 later (it is never cleared). In case of a weak definition,
4702 DEF_REGULAR may be cleared later by a strong definition in
4703 a shared library. We account for that possibility below by
4704 storing information in the dyn_relocs field of the hash
4705 table entry. A similar situation occurs when creating
4706 shared libraries and symbol visibility changes render the
4709 If on the other hand, we are creating an executable, we
4710 may need to keep relocations for symbols satisfied by a
4711 dynamic library if we manage to avoid copy relocs for the
4715 && (MUST_BE_DYN_RELOC (r_type
)
4717 && (! info
->symbolic
4718 || h
->root
.type
== bfd_link_hash_defweak
4719 || !h
->def_regular
))))
4720 || (ELIMINATE_COPY_RELOCS
4723 && (h
->root
.type
== bfd_link_hash_defweak
4724 || !h
->def_regular
)))
4726 struct ppc_dyn_relocs
*p
;
4727 struct ppc_dyn_relocs
**head
;
4729 /* We must copy these reloc types into the output file.
4730 Create a reloc section in dynobj and make room for
4737 name
= (bfd_elf_string_from_elf_section
4739 elf_elfheader (abfd
)->e_shstrndx
,
4740 elf_section_data (sec
)->rel_hdr
.sh_name
));
4744 if (strncmp (name
, ".rela", 5) != 0
4745 || strcmp (bfd_get_section_name (abfd
, sec
),
4748 (*_bfd_error_handler
)
4749 (_("%B: bad relocation section name `%s\'"),
4751 bfd_set_error (bfd_error_bad_value
);
4754 dynobj
= htab
->elf
.dynobj
;
4755 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4760 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
4761 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
4762 | SEC_ALLOC
| SEC_LOAD
);
4763 sreloc
= bfd_make_section_with_flags (dynobj
,
4767 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
4770 elf_section_data (sec
)->sreloc
= sreloc
;
4773 /* If this is a global symbol, we count the number of
4774 relocations we need for this symbol. */
4777 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4781 /* Track dynamic relocs needed for local syms too.
4782 We really need local syms available to do this
4786 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4791 head
= ((struct ppc_dyn_relocs
**)
4792 &elf_section_data (s
)->local_dynrel
);
4796 if (p
== NULL
|| p
->sec
!= sec
)
4798 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4809 if (!MUST_BE_DYN_RELOC (r_type
))
4822 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4823 of the code entry point, and its section. */
4826 opd_entry_value (asection
*opd_sec
,
4828 asection
**code_sec
,
4831 bfd
*opd_bfd
= opd_sec
->owner
;
4832 Elf_Internal_Rela
*relocs
;
4833 Elf_Internal_Rela
*lo
, *hi
, *look
;
4836 /* No relocs implies we are linking a --just-symbols object. */
4837 if (opd_sec
->reloc_count
== 0)
4841 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
4842 return (bfd_vma
) -1;
4844 if (code_sec
!= NULL
)
4846 asection
*sec
, *likely
= NULL
;
4847 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4849 && (sec
->flags
& SEC_LOAD
) != 0
4850 && (sec
->flags
& SEC_ALLOC
) != 0)
4855 if (code_off
!= NULL
)
4856 *code_off
= val
- likely
->vma
;
4862 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
4864 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
4866 /* Go find the opd reloc at the sym address. */
4868 BFD_ASSERT (lo
!= NULL
);
4869 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
4873 look
= lo
+ (hi
- lo
) / 2;
4874 if (look
->r_offset
< offset
)
4876 else if (look
->r_offset
> offset
)
4880 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (opd_bfd
)->symtab_hdr
;
4881 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
4882 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
4884 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
4887 if (symndx
< symtab_hdr
->sh_info
)
4889 Elf_Internal_Sym
*sym
;
4891 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4894 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
4895 symtab_hdr
->sh_info
,
4896 0, NULL
, NULL
, NULL
);
4899 symtab_hdr
->contents
= (bfd_byte
*) sym
;
4903 val
= sym
->st_value
;
4905 if ((sym
->st_shndx
!= SHN_UNDEF
4906 && sym
->st_shndx
< SHN_LORESERVE
)
4907 || sym
->st_shndx
> SHN_HIRESERVE
)
4908 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
4909 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
4913 struct elf_link_hash_entry
**sym_hashes
;
4914 struct elf_link_hash_entry
*rh
;
4916 sym_hashes
= elf_sym_hashes (opd_bfd
);
4917 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
4918 while (rh
->root
.type
== bfd_link_hash_indirect
4919 || rh
->root
.type
== bfd_link_hash_warning
)
4920 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
4921 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
4922 || rh
->root
.type
== bfd_link_hash_defweak
);
4923 val
= rh
->root
.u
.def
.value
;
4924 sec
= rh
->root
.u
.def
.section
;
4926 val
+= look
->r_addend
;
4927 if (code_off
!= NULL
)
4929 if (code_sec
!= NULL
)
4931 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
4932 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
4941 /* Return the section that should be marked against GC for a given
4945 ppc64_elf_gc_mark_hook (asection
*sec
,
4946 struct bfd_link_info
*info
,
4947 Elf_Internal_Rela
*rel
,
4948 struct elf_link_hash_entry
*h
,
4949 Elf_Internal_Sym
*sym
)
4953 /* First mark all our entry sym sections. */
4954 if (info
->gc_sym_list
!= NULL
)
4956 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4957 struct bfd_sym_chain
*sym
= info
->gc_sym_list
;
4959 info
->gc_sym_list
= NULL
;
4962 struct ppc_link_hash_entry
*eh
;
4964 eh
= (struct ppc_link_hash_entry
*)
4965 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
4968 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
4969 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
4972 if (eh
->is_func_descriptor
4973 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
4974 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
4975 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4976 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4977 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4978 eh
->elf
.root
.u
.def
.value
,
4979 &rsec
, NULL
) != (bfd_vma
) -1)
4985 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4987 rsec
= eh
->elf
.root
.u
.def
.section
;
4989 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4993 while (sym
!= NULL
);
4996 /* Syms return NULL if we're marking .opd, so we avoid marking all
4997 function sections, as all functions are referenced in .opd. */
4999 if (get_opd_info (sec
) != NULL
)
5004 enum elf_ppc64_reloc_type r_type
;
5005 struct ppc_link_hash_entry
*eh
;
5007 r_type
= ELF64_R_TYPE (rel
->r_info
);
5010 case R_PPC64_GNU_VTINHERIT
:
5011 case R_PPC64_GNU_VTENTRY
:
5015 switch (h
->root
.type
)
5017 case bfd_link_hash_defined
:
5018 case bfd_link_hash_defweak
:
5019 eh
= (struct ppc_link_hash_entry
*) h
;
5021 && eh
->oh
->is_func_descriptor
5022 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5023 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5026 /* Function descriptor syms cause the associated
5027 function code sym section to be marked. */
5028 if (eh
->is_func_descriptor
5029 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5030 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5032 /* They also mark their opd section. */
5033 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
5034 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
5035 ppc64_elf_gc_mark_hook
);
5037 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
5039 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5040 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5041 eh
->elf
.root
.u
.def
.value
,
5042 &rsec
, NULL
) != (bfd_vma
) -1)
5044 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
5045 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
5046 ppc64_elf_gc_mark_hook
);
5049 rsec
= h
->root
.u
.def
.section
;
5052 case bfd_link_hash_common
:
5053 rsec
= h
->root
.u
.c
.p
->section
;
5063 asection
**opd_sym_section
;
5065 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5066 opd_sym_section
= get_opd_info (rsec
);
5067 if (opd_sym_section
!= NULL
)
5070 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
5072 rsec
= opd_sym_section
[(sym
->st_value
+ rel
->r_addend
) / 8];
5079 /* Update the .got, .plt. and dynamic reloc reference counts for the
5080 section being removed. */
5083 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5084 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5086 struct ppc_link_hash_table
*htab
;
5087 Elf_Internal_Shdr
*symtab_hdr
;
5088 struct elf_link_hash_entry
**sym_hashes
;
5089 struct got_entry
**local_got_ents
;
5090 const Elf_Internal_Rela
*rel
, *relend
;
5092 if ((sec
->flags
& SEC_ALLOC
) == 0)
5095 elf_section_data (sec
)->local_dynrel
= NULL
;
5097 htab
= ppc_hash_table (info
);
5098 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5099 sym_hashes
= elf_sym_hashes (abfd
);
5100 local_got_ents
= elf_local_got_ents (abfd
);
5102 relend
= relocs
+ sec
->reloc_count
;
5103 for (rel
= relocs
; rel
< relend
; rel
++)
5105 unsigned long r_symndx
;
5106 enum elf_ppc64_reloc_type r_type
;
5107 struct elf_link_hash_entry
*h
= NULL
;
5110 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5111 r_type
= ELF64_R_TYPE (rel
->r_info
);
5112 if (r_symndx
>= symtab_hdr
->sh_info
)
5114 struct ppc_link_hash_entry
*eh
;
5115 struct ppc_dyn_relocs
**pp
;
5116 struct ppc_dyn_relocs
*p
;
5118 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5119 while (h
->root
.type
== bfd_link_hash_indirect
5120 || h
->root
.type
== bfd_link_hash_warning
)
5121 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5122 eh
= (struct ppc_link_hash_entry
*) h
;
5124 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5127 /* Everything must go for SEC. */
5135 case R_PPC64_GOT_TLSLD16
:
5136 case R_PPC64_GOT_TLSLD16_LO
:
5137 case R_PPC64_GOT_TLSLD16_HI
:
5138 case R_PPC64_GOT_TLSLD16_HA
:
5139 ppc64_tlsld_got (abfd
)->refcount
-= 1;
5140 tls_type
= TLS_TLS
| TLS_LD
;
5143 case R_PPC64_GOT_TLSGD16
:
5144 case R_PPC64_GOT_TLSGD16_LO
:
5145 case R_PPC64_GOT_TLSGD16_HI
:
5146 case R_PPC64_GOT_TLSGD16_HA
:
5147 tls_type
= TLS_TLS
| TLS_GD
;
5150 case R_PPC64_GOT_TPREL16_DS
:
5151 case R_PPC64_GOT_TPREL16_LO_DS
:
5152 case R_PPC64_GOT_TPREL16_HI
:
5153 case R_PPC64_GOT_TPREL16_HA
:
5154 tls_type
= TLS_TLS
| TLS_TPREL
;
5157 case R_PPC64_GOT_DTPREL16_DS
:
5158 case R_PPC64_GOT_DTPREL16_LO_DS
:
5159 case R_PPC64_GOT_DTPREL16_HI
:
5160 case R_PPC64_GOT_DTPREL16_HA
:
5161 tls_type
= TLS_TLS
| TLS_DTPREL
;
5165 case R_PPC64_GOT16_DS
:
5166 case R_PPC64_GOT16_HA
:
5167 case R_PPC64_GOT16_HI
:
5168 case R_PPC64_GOT16_LO
:
5169 case R_PPC64_GOT16_LO_DS
:
5172 struct got_entry
*ent
;
5177 ent
= local_got_ents
[r_symndx
];
5179 for (; ent
!= NULL
; ent
= ent
->next
)
5180 if (ent
->addend
== rel
->r_addend
5181 && ent
->owner
== abfd
5182 && ent
->tls_type
== tls_type
)
5186 if (ent
->got
.refcount
> 0)
5187 ent
->got
.refcount
-= 1;
5191 case R_PPC64_PLT16_HA
:
5192 case R_PPC64_PLT16_HI
:
5193 case R_PPC64_PLT16_LO
:
5197 case R_PPC64_REL14_BRNTAKEN
:
5198 case R_PPC64_REL14_BRTAKEN
:
5202 struct plt_entry
*ent
;
5204 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5205 if (ent
->addend
== rel
->r_addend
)
5209 if (ent
->plt
.refcount
> 0)
5210 ent
->plt
.refcount
-= 1;
5221 /* The maximum size of .sfpr. */
5222 #define SFPR_MAX (218*4)
5224 struct sfpr_def_parms
5226 const char name
[12];
5227 unsigned char lo
, hi
;
5228 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5229 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5232 /* Auto-generate _save*, _rest* functions in .sfpr. */
5235 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5237 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5239 size_t len
= strlen (parm
->name
);
5240 bfd_boolean writing
= FALSE
;
5243 memcpy (sym
, parm
->name
, len
);
5246 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5248 struct elf_link_hash_entry
*h
;
5250 sym
[len
+ 0] = i
/ 10 + '0';
5251 sym
[len
+ 1] = i
% 10 + '0';
5252 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5256 h
->root
.type
= bfd_link_hash_defined
;
5257 h
->root
.u
.def
.section
= htab
->sfpr
;
5258 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5261 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5263 if (htab
->sfpr
->contents
== NULL
)
5265 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5266 if (htab
->sfpr
->contents
== NULL
)
5272 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5274 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5276 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5277 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5285 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5287 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5292 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5294 p
= savegpr0 (abfd
, p
, r
);
5295 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5297 bfd_put_32 (abfd
, BLR
, p
);
5302 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5304 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5309 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5311 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5313 p
= restgpr0 (abfd
, p
, r
);
5314 bfd_put_32 (abfd
, MTLR_R0
, p
);
5318 p
= restgpr0 (abfd
, p
, 30);
5319 p
= restgpr0 (abfd
, p
, 31);
5321 bfd_put_32 (abfd
, BLR
, p
);
5326 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5328 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5333 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5335 p
= savegpr1 (abfd
, p
, r
);
5336 bfd_put_32 (abfd
, BLR
, p
);
5341 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5343 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5348 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5350 p
= restgpr1 (abfd
, p
, r
);
5351 bfd_put_32 (abfd
, BLR
, p
);
5356 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5358 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5363 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5365 p
= savefpr (abfd
, p
, r
);
5366 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5368 bfd_put_32 (abfd
, BLR
, p
);
5373 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5375 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5380 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5382 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5384 p
= restfpr (abfd
, p
, r
);
5385 bfd_put_32 (abfd
, MTLR_R0
, p
);
5389 p
= restfpr (abfd
, p
, 30);
5390 p
= restfpr (abfd
, p
, 31);
5392 bfd_put_32 (abfd
, BLR
, p
);
5397 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5399 p
= savefpr (abfd
, p
, r
);
5400 bfd_put_32 (abfd
, BLR
, p
);
5405 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5407 p
= restfpr (abfd
, p
, r
);
5408 bfd_put_32 (abfd
, BLR
, p
);
5413 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5415 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5417 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5422 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5424 p
= savevr (abfd
, p
, r
);
5425 bfd_put_32 (abfd
, BLR
, p
);
5430 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5432 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5434 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5439 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5441 p
= restvr (abfd
, p
, r
);
5442 bfd_put_32 (abfd
, BLR
, p
);
5446 /* Called via elf_link_hash_traverse to transfer dynamic linking
5447 information on function code symbol entries to their corresponding
5448 function descriptor symbol entries. */
5451 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5453 struct bfd_link_info
*info
;
5454 struct ppc_link_hash_table
*htab
;
5455 struct plt_entry
*ent
;
5456 struct ppc_link_hash_entry
*fh
;
5457 struct ppc_link_hash_entry
*fdh
;
5458 bfd_boolean force_local
;
5460 fh
= (struct ppc_link_hash_entry
*) h
;
5461 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5464 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5465 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5468 htab
= ppc_hash_table (info
);
5470 /* Resolve undefined references to dot-symbols as the value
5471 in the function descriptor, if we have one in a regular object.
5472 This is to satisfy cases like ".quad .foo". Calls to functions
5473 in dynamic objects are handled elsewhere. */
5474 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5475 && fh
->was_undefined
5476 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5477 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5478 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5479 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5480 fh
->oh
->elf
.root
.u
.def
.value
,
5481 &fh
->elf
.root
.u
.def
.section
,
5482 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5484 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5485 fh
->elf
.forced_local
= 1;
5488 /* If this is a function code symbol, transfer dynamic linking
5489 information to the function descriptor symbol. */
5493 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5494 if (ent
->plt
.refcount
> 0)
5497 || fh
->elf
.root
.root
.string
[0] != '.'
5498 || fh
->elf
.root
.root
.string
[1] == '\0')
5501 /* Find the corresponding function descriptor symbol. Create it
5502 as undefined if necessary. */
5504 fdh
= get_fdh (fh
, htab
);
5506 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5507 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5508 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5512 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5513 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5515 fdh
= make_fdh (info
, fh
);
5520 /* Fake function descriptors are made undefweak. If the function
5521 code symbol is strong undefined, make the fake sym the same.
5522 If the function code symbol is defined, then force the fake
5523 descriptor local; We can't support overriding of symbols in a
5524 shared library on a fake descriptor. */
5528 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5530 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
5532 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
5533 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
5535 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
5536 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5538 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
5543 && !fdh
->elf
.forced_local
5545 || fdh
->elf
.def_dynamic
5546 || fdh
->elf
.ref_dynamic
5547 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5548 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5550 if (fdh
->elf
.dynindx
== -1)
5551 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5553 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
5554 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
5555 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
5556 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
5557 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5559 move_plt_plist (fh
, fdh
);
5560 fdh
->elf
.needs_plt
= 1;
5562 fdh
->is_func_descriptor
= 1;
5567 /* Now that the info is on the function descriptor, clear the
5568 function code sym info. Any function code syms for which we
5569 don't have a definition in a regular file, we force local.
5570 This prevents a shared library from exporting syms that have
5571 been imported from another library. Function code syms that
5572 are really in the library we must leave global to prevent the
5573 linker dragging in a definition from a static library. */
5574 force_local
= (!fh
->elf
.def_regular
5576 || !fdh
->elf
.def_regular
5577 || fdh
->elf
.forced_local
);
5578 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5583 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5584 this hook to a) provide some gcc support functions, and b) transfer
5585 dynamic linking information gathered so far on function code symbol
5586 entries, to their corresponding function descriptor symbol entries. */
5589 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5590 struct bfd_link_info
*info
)
5592 struct ppc_link_hash_table
*htab
;
5594 const struct sfpr_def_parms funcs
[] =
5596 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5597 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5598 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5599 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5600 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5601 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5602 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5603 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
5604 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
5605 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
5606 { "_savevr_", 20, 31, savevr
, savevr_tail
},
5607 { "_restvr_", 20, 31, restvr
, restvr_tail
}
5610 htab
= ppc_hash_table (info
);
5611 if (htab
->sfpr
== NULL
)
5612 /* We don't have any relocs. */
5615 /* Provide any missing _save* and _rest* functions. */
5616 htab
->sfpr
->size
= 0;
5617 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
5618 if (!sfpr_define (info
, &funcs
[i
]))
5621 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
5623 if (htab
->sfpr
->size
== 0)
5624 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
5629 /* Adjust a symbol defined by a dynamic object and referenced by a
5630 regular object. The current definition is in some section of the
5631 dynamic object, but we're not including those sections. We have to
5632 change the definition to something the rest of the link can
5636 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5637 struct elf_link_hash_entry
*h
)
5639 struct ppc_link_hash_table
*htab
;
5641 unsigned int power_of_two
;
5643 htab
= ppc_hash_table (info
);
5645 /* Deal with function syms. */
5646 if (h
->type
== STT_FUNC
5649 /* Clear procedure linkage table information for any symbol that
5650 won't need a .plt entry. */
5651 struct plt_entry
*ent
;
5652 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5653 if (ent
->plt
.refcount
> 0)
5656 || SYMBOL_CALLS_LOCAL (info
, h
)
5657 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5658 && h
->root
.type
== bfd_link_hash_undefweak
))
5660 h
->plt
.plist
= NULL
;
5665 h
->plt
.plist
= NULL
;
5667 /* If this is a weak symbol, and there is a real definition, the
5668 processor independent code will have arranged for us to see the
5669 real definition first, and we can just use the same value. */
5670 if (h
->u
.weakdef
!= NULL
)
5672 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5673 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5674 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5675 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5676 if (ELIMINATE_COPY_RELOCS
)
5677 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5681 /* If we are creating a shared library, we must presume that the
5682 only references to the symbol are via the global offset table.
5683 For such cases we need not do anything here; the relocations will
5684 be handled correctly by relocate_section. */
5688 /* If there are no references to this symbol that do not use the
5689 GOT, we don't need to generate a copy reloc. */
5690 if (!h
->non_got_ref
)
5693 if (ELIMINATE_COPY_RELOCS
)
5695 struct ppc_link_hash_entry
* eh
;
5696 struct ppc_dyn_relocs
*p
;
5698 eh
= (struct ppc_link_hash_entry
*) h
;
5699 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5701 s
= p
->sec
->output_section
;
5702 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5706 /* If we didn't find any dynamic relocs in read-only sections, then
5707 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5715 if (h
->plt
.plist
!= NULL
)
5717 /* We should never get here, but unfortunately there are versions
5718 of gcc out there that improperly (for this ABI) put initialized
5719 function pointers, vtable refs and suchlike in read-only
5720 sections. Allow them to proceed, but warn that this might
5721 break at runtime. */
5722 (*_bfd_error_handler
)
5723 (_("copy reloc against `%s' requires lazy plt linking; "
5724 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5725 h
->root
.root
.string
);
5728 /* This is a reference to a symbol defined by a dynamic object which
5729 is not a function. */
5731 /* We must allocate the symbol in our .dynbss section, which will
5732 become part of the .bss section of the executable. There will be
5733 an entry for this symbol in the .dynsym section. The dynamic
5734 object will contain position independent code, so all references
5735 from the dynamic object to this symbol will go through the global
5736 offset table. The dynamic linker will use the .dynsym entry to
5737 determine the address it must put in the global offset table, so
5738 both the dynamic object and the regular object will refer to the
5739 same memory location for the variable. */
5741 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5742 to copy the initial value out of the dynamic object and into the
5743 runtime process image. We need to remember the offset into the
5744 .rela.bss section we are going to use. */
5745 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5747 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
5751 /* We need to figure out the alignment required for this symbol. I
5752 have no idea how ELF linkers handle this. */
5753 power_of_two
= bfd_log2 (h
->size
);
5754 if (power_of_two
> 4)
5757 /* Apply the required alignment. */
5759 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5760 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
5762 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
5766 /* Define the symbol as being at this point in the section. */
5767 h
->root
.u
.def
.section
= s
;
5768 h
->root
.u
.def
.value
= s
->size
;
5770 /* Increment the section size to make room for the symbol. */
5776 /* If given a function descriptor symbol, hide both the function code
5777 sym and the descriptor. */
5779 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
5780 struct elf_link_hash_entry
*h
,
5781 bfd_boolean force_local
)
5783 struct ppc_link_hash_entry
*eh
;
5784 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
5786 eh
= (struct ppc_link_hash_entry
*) h
;
5787 if (eh
->is_func_descriptor
)
5789 struct ppc_link_hash_entry
*fh
= eh
->oh
;
5794 struct ppc_link_hash_table
*htab
;
5797 /* We aren't supposed to use alloca in BFD because on
5798 systems which do not have alloca the version in libiberty
5799 calls xmalloc, which might cause the program to crash
5800 when it runs out of memory. This function doesn't have a
5801 return status, so there's no way to gracefully return an
5802 error. So cheat. We know that string[-1] can be safely
5803 accessed; It's either a string in an ELF string table,
5804 or allocated in an objalloc structure. */
5806 p
= eh
->elf
.root
.root
.string
- 1;
5809 htab
= ppc_hash_table (info
);
5810 fh
= (struct ppc_link_hash_entry
*)
5811 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5814 /* Unfortunately, if it so happens that the string we were
5815 looking for was allocated immediately before this string,
5816 then we overwrote the string terminator. That's the only
5817 reason the lookup should fail. */
5820 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
5821 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
5823 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
5824 fh
= (struct ppc_link_hash_entry
*)
5825 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5834 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5839 get_sym_h (struct elf_link_hash_entry
**hp
,
5840 Elf_Internal_Sym
**symp
,
5843 Elf_Internal_Sym
**locsymsp
,
5844 unsigned long r_symndx
,
5847 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5849 if (r_symndx
>= symtab_hdr
->sh_info
)
5851 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5852 struct elf_link_hash_entry
*h
;
5854 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5855 while (h
->root
.type
== bfd_link_hash_indirect
5856 || h
->root
.type
== bfd_link_hash_warning
)
5857 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5865 if (symsecp
!= NULL
)
5867 asection
*symsec
= NULL
;
5868 if (h
->root
.type
== bfd_link_hash_defined
5869 || h
->root
.type
== bfd_link_hash_defweak
)
5870 symsec
= h
->root
.u
.def
.section
;
5874 if (tls_maskp
!= NULL
)
5876 struct ppc_link_hash_entry
*eh
;
5878 eh
= (struct ppc_link_hash_entry
*) h
;
5879 *tls_maskp
= &eh
->tls_mask
;
5884 Elf_Internal_Sym
*sym
;
5885 Elf_Internal_Sym
*locsyms
= *locsymsp
;
5887 if (locsyms
== NULL
)
5889 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5890 if (locsyms
== NULL
)
5891 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5892 symtab_hdr
->sh_info
,
5893 0, NULL
, NULL
, NULL
);
5894 if (locsyms
== NULL
)
5896 *locsymsp
= locsyms
;
5898 sym
= locsyms
+ r_symndx
;
5906 if (symsecp
!= NULL
)
5908 asection
*symsec
= NULL
;
5909 if ((sym
->st_shndx
!= SHN_UNDEF
5910 && sym
->st_shndx
< SHN_LORESERVE
)
5911 || sym
->st_shndx
> SHN_HIRESERVE
)
5912 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
5916 if (tls_maskp
!= NULL
)
5918 struct got_entry
**lgot_ents
;
5922 lgot_ents
= elf_local_got_ents (ibfd
);
5923 if (lgot_ents
!= NULL
)
5925 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
5926 tls_mask
= &lgot_masks
[r_symndx
];
5928 *tls_maskp
= tls_mask
;
5934 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5935 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5936 type suitable for optimization, and 1 otherwise. */
5939 get_tls_mask (char **tls_maskp
, unsigned long *toc_symndx
,
5940 Elf_Internal_Sym
**locsymsp
,
5941 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
5943 unsigned long r_symndx
;
5945 struct elf_link_hash_entry
*h
;
5946 Elf_Internal_Sym
*sym
;
5950 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5951 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5954 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
5956 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
5959 /* Look inside a TOC section too. */
5962 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
5963 off
= h
->root
.u
.def
.value
;
5966 off
= sym
->st_value
;
5967 off
+= rel
->r_addend
;
5968 BFD_ASSERT (off
% 8 == 0);
5969 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
5970 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
5971 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5973 if (toc_symndx
!= NULL
)
5974 *toc_symndx
= r_symndx
;
5976 || ((h
->root
.type
== bfd_link_hash_defined
5977 || h
->root
.type
== bfd_link_hash_defweak
)
5978 && !h
->def_dynamic
))
5979 && (next_r
== -1 || next_r
== -2))
5984 /* Adjust all global syms defined in opd sections. In gcc generated
5985 code for the old ABI, these will already have been done. */
5988 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
5990 struct ppc_link_hash_entry
*eh
;
5994 if (h
->root
.type
== bfd_link_hash_indirect
)
5997 if (h
->root
.type
== bfd_link_hash_warning
)
5998 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6000 if (h
->root
.type
!= bfd_link_hash_defined
6001 && h
->root
.type
!= bfd_link_hash_defweak
)
6004 eh
= (struct ppc_link_hash_entry
*) h
;
6005 if (eh
->adjust_done
)
6008 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6009 opd_adjust
= get_opd_info (sym_sec
);
6010 if (opd_adjust
!= NULL
)
6012 long adjust
= opd_adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6015 /* This entry has been deleted. */
6016 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->u
.deleted_section
;
6019 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6020 if (elf_discarded_section (dsec
))
6022 ppc64_elf_tdata (sym_sec
->owner
)->u
.deleted_section
= dsec
;
6026 eh
->elf
.root
.u
.def
.value
= 0;
6027 eh
->elf
.root
.u
.def
.section
= dsec
;
6030 eh
->elf
.root
.u
.def
.value
+= adjust
;
6031 eh
->adjust_done
= 1;
6036 /* Handles decrementing dynamic reloc counts for the reloc specified by
6037 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6038 have already been determined. */
6041 dec_dynrel_count (bfd_vma r_info
,
6043 struct bfd_link_info
*info
,
6044 Elf_Internal_Sym
**local_syms
,
6045 struct elf_link_hash_entry
*h
,
6048 enum elf_ppc64_reloc_type r_type
;
6049 struct ppc_dyn_relocs
*p
;
6050 struct ppc_dyn_relocs
**pp
;
6052 /* Can this reloc be dynamic? This switch, and later tests here
6053 should be kept in sync with the code in check_relocs. */
6054 r_type
= ELF64_R_TYPE (r_info
);
6060 case R_PPC64_TPREL16
:
6061 case R_PPC64_TPREL16_LO
:
6062 case R_PPC64_TPREL16_HI
:
6063 case R_PPC64_TPREL16_HA
:
6064 case R_PPC64_TPREL16_DS
:
6065 case R_PPC64_TPREL16_LO_DS
:
6066 case R_PPC64_TPREL16_HIGHER
:
6067 case R_PPC64_TPREL16_HIGHERA
:
6068 case R_PPC64_TPREL16_HIGHEST
:
6069 case R_PPC64_TPREL16_HIGHESTA
:
6073 case R_PPC64_TPREL64
:
6074 case R_PPC64_DTPMOD64
:
6075 case R_PPC64_DTPREL64
:
6076 case R_PPC64_ADDR64
:
6080 case R_PPC64_ADDR14
:
6081 case R_PPC64_ADDR14_BRNTAKEN
:
6082 case R_PPC64_ADDR14_BRTAKEN
:
6083 case R_PPC64_ADDR16
:
6084 case R_PPC64_ADDR16_DS
:
6085 case R_PPC64_ADDR16_HA
:
6086 case R_PPC64_ADDR16_HI
:
6087 case R_PPC64_ADDR16_HIGHER
:
6088 case R_PPC64_ADDR16_HIGHERA
:
6089 case R_PPC64_ADDR16_HIGHEST
:
6090 case R_PPC64_ADDR16_HIGHESTA
:
6091 case R_PPC64_ADDR16_LO
:
6092 case R_PPC64_ADDR16_LO_DS
:
6093 case R_PPC64_ADDR24
:
6094 case R_PPC64_ADDR32
:
6095 case R_PPC64_UADDR16
:
6096 case R_PPC64_UADDR32
:
6097 case R_PPC64_UADDR64
:
6102 if (local_syms
!= NULL
)
6104 unsigned long r_symndx
;
6105 Elf_Internal_Sym
*sym
;
6106 bfd
*ibfd
= sec
->owner
;
6108 r_symndx
= ELF64_R_SYM (r_info
);
6109 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6114 && (MUST_BE_DYN_RELOC (r_type
)
6117 || h
->root
.type
== bfd_link_hash_defweak
6118 || !h
->def_regular
))))
6119 || (ELIMINATE_COPY_RELOCS
6122 && (h
->root
.type
== bfd_link_hash_defweak
6123 || !h
->def_regular
)))
6129 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6130 else if (sym_sec
!= NULL
)
6131 pp
= (struct ppc_dyn_relocs
**) &elf_section_data (sym_sec
)->local_dynrel
;
6133 pp
= (struct ppc_dyn_relocs
**) &elf_section_data (sec
)->local_dynrel
;
6135 while ((p
= *pp
) != NULL
)
6139 if (!MUST_BE_DYN_RELOC (r_type
))
6149 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6151 bfd_set_error (bfd_error_bad_value
);
6155 /* Remove unused Official Procedure Descriptor entries. Currently we
6156 only remove those associated with functions in discarded link-once
6157 sections, or weakly defined functions that have been overridden. It
6158 would be possible to remove many more entries for statically linked
6162 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
6163 bfd_boolean no_opd_opt
,
6164 bfd_boolean non_overlapping
)
6167 bfd_boolean some_edited
= FALSE
;
6168 asection
*need_pad
= NULL
;
6170 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6173 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6174 Elf_Internal_Shdr
*symtab_hdr
;
6175 Elf_Internal_Sym
*local_syms
;
6176 struct elf_link_hash_entry
**sym_hashes
;
6180 bfd_boolean need_edit
, add_aux_fields
;
6181 bfd_size_type cnt_16b
= 0;
6183 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6184 if (sec
== NULL
|| sec
->size
== 0)
6187 amt
= sec
->size
* sizeof (long) / 8;
6188 opd_adjust
= get_opd_info (sec
);
6189 if (opd_adjust
== NULL
)
6191 /* check_relocs hasn't been called. Must be a ld -r link
6192 or --just-symbols object. */
6193 opd_adjust
= bfd_alloc (obfd
, amt
);
6194 if (opd_adjust
== NULL
)
6196 ppc64_elf_section_data (sec
)->opd
.adjust
= opd_adjust
;
6198 memset (opd_adjust
, 0, amt
);
6203 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6206 if (sec
->output_section
== bfd_abs_section_ptr
)
6209 /* Look through the section relocs. */
6210 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6214 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6215 sym_hashes
= elf_sym_hashes (ibfd
);
6217 /* Read the relocations. */
6218 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6220 if (relstart
== NULL
)
6223 /* First run through the relocs to check they are sane, and to
6224 determine whether we need to edit this opd section. */
6228 relend
= relstart
+ sec
->reloc_count
;
6229 for (rel
= relstart
; rel
< relend
; )
6231 enum elf_ppc64_reloc_type r_type
;
6232 unsigned long r_symndx
;
6234 struct elf_link_hash_entry
*h
;
6235 Elf_Internal_Sym
*sym
;
6237 /* .opd contains a regular array of 16 or 24 byte entries. We're
6238 only interested in the reloc pointing to a function entry
6240 if (rel
->r_offset
!= offset
6241 || rel
+ 1 >= relend
6242 || (rel
+ 1)->r_offset
!= offset
+ 8)
6244 /* If someone messes with .opd alignment then after a
6245 "ld -r" we might have padding in the middle of .opd.
6246 Also, there's nothing to prevent someone putting
6247 something silly in .opd with the assembler. No .opd
6248 optimization for them! */
6250 (*_bfd_error_handler
)
6251 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6256 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6257 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6259 (*_bfd_error_handler
)
6260 (_("%B: unexpected reloc type %u in .opd section"),
6266 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6267 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6271 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6273 const char *sym_name
;
6275 sym_name
= h
->root
.root
.string
;
6277 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
6280 (*_bfd_error_handler
)
6281 (_("%B: undefined sym `%s' in .opd section"),
6287 /* opd entries are always for functions defined in the
6288 current input bfd. If the symbol isn't defined in the
6289 input bfd, then we won't be using the function in this
6290 bfd; It must be defined in a linkonce section in another
6291 bfd, or is weak. It's also possible that we are
6292 discarding the function due to a linker script /DISCARD/,
6293 which we test for via the output_section. */
6294 if (sym_sec
->owner
!= ibfd
6295 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6300 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6302 if (sec
->size
== offset
+ 24)
6307 if (rel
== relend
&& sec
->size
== offset
+ 16)
6315 if (rel
->r_offset
== offset
+ 24)
6317 else if (rel
->r_offset
!= offset
+ 16)
6319 else if (rel
+ 1 < relend
6320 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6321 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6326 else if (rel
+ 2 < relend
6327 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6328 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6337 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6339 if (need_edit
|| add_aux_fields
)
6341 Elf_Internal_Rela
*write_rel
;
6342 bfd_byte
*rptr
, *wptr
;
6343 bfd_byte
*new_contents
= NULL
;
6347 /* This seems a waste of time as input .opd sections are all
6348 zeros as generated by gcc, but I suppose there's no reason
6349 this will always be so. We might start putting something in
6350 the third word of .opd entries. */
6351 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6354 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6359 if (local_syms
!= NULL
6360 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6362 if (elf_section_data (sec
)->relocs
!= relstart
)
6366 sec
->contents
= loc
;
6367 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6370 elf_section_data (sec
)->relocs
= relstart
;
6372 new_contents
= sec
->contents
;
6375 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6376 if (new_contents
== NULL
)
6380 wptr
= new_contents
;
6381 rptr
= sec
->contents
;
6383 write_rel
= relstart
;
6387 for (rel
= relstart
; rel
< relend
; rel
++)
6389 unsigned long r_symndx
;
6391 struct elf_link_hash_entry
*h
;
6392 Elf_Internal_Sym
*sym
;
6394 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6395 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6399 if (rel
->r_offset
== offset
)
6401 struct ppc_link_hash_entry
*fdh
= NULL
;
6403 /* See if the .opd entry is full 24 byte or
6404 16 byte (with fd_aux entry overlapped with next
6407 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6408 || (rel
+ 3 < relend
6409 && rel
[2].r_offset
== offset
+ 16
6410 && rel
[3].r_offset
== offset
+ 24
6411 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6412 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6416 && h
->root
.root
.string
[0] == '.')
6418 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6419 ppc_hash_table (info
));
6421 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
6422 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6426 skip
= (sym_sec
->owner
!= ibfd
6427 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6430 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6432 /* Arrange for the function descriptor sym
6434 fdh
->elf
.root
.u
.def
.value
= 0;
6435 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6437 opd_adjust
[rel
->r_offset
/ 8] = -1;
6441 /* We'll be keeping this opd entry. */
6445 /* Redefine the function descriptor symbol to
6446 this location in the opd section. It is
6447 necessary to update the value here rather
6448 than using an array of adjustments as we do
6449 for local symbols, because various places
6450 in the generic ELF code use the value
6451 stored in u.def.value. */
6452 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6453 fdh
->adjust_done
= 1;
6456 /* Local syms are a bit tricky. We could
6457 tweak them as they can be cached, but
6458 we'd need to look through the local syms
6459 for the function descriptor sym which we
6460 don't have at the moment. So keep an
6461 array of adjustments. */
6462 opd_adjust
[rel
->r_offset
/ 8]
6463 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6466 memcpy (wptr
, rptr
, opd_ent_size
);
6467 wptr
+= opd_ent_size
;
6468 if (add_aux_fields
&& opd_ent_size
== 16)
6470 memset (wptr
, '\0', 8);
6474 rptr
+= opd_ent_size
;
6475 offset
+= opd_ent_size
;
6480 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
6486 /* We need to adjust any reloc offsets to point to the
6487 new opd entries. While we're at it, we may as well
6488 remove redundant relocs. */
6489 rel
->r_offset
+= opd_adjust
[(offset
- opd_ent_size
) / 8];
6490 if (write_rel
!= rel
)
6491 memcpy (write_rel
, rel
, sizeof (*rel
));
6496 sec
->size
= wptr
- new_contents
;
6497 sec
->reloc_count
= write_rel
- relstart
;
6500 free (sec
->contents
);
6501 sec
->contents
= new_contents
;
6504 /* Fudge the size too, as this is used later in
6505 elf_bfd_final_link if we are emitting relocs. */
6506 elf_section_data (sec
)->rel_hdr
.sh_size
6507 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6508 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6511 else if (elf_section_data (sec
)->relocs
!= relstart
)
6514 if (local_syms
!= NULL
6515 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6517 if (!info
->keep_memory
)
6520 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6525 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6527 /* If we are doing a final link and the last .opd entry is just 16 byte
6528 long, add a 8 byte padding after it. */
6529 if (need_pad
!= NULL
&& !info
->relocatable
)
6533 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6535 BFD_ASSERT (need_pad
->size
> 0);
6537 p
= bfd_malloc (need_pad
->size
+ 8);
6541 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6542 p
, 0, need_pad
->size
))
6545 need_pad
->contents
= p
;
6546 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6550 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6554 need_pad
->contents
= p
;
6557 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6558 need_pad
->size
+= 8;
6564 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6567 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6569 struct ppc_link_hash_table
*htab
;
6571 htab
= ppc_hash_table (info
);
6572 if (htab
->tls_get_addr
!= NULL
)
6574 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr
;
6576 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6577 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6578 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6580 htab
->tls_get_addr
= h
;
6582 if (htab
->tls_get_addr_fd
== NULL
6584 && h
->oh
->is_func_descriptor
6585 && (h
->oh
->elf
.root
.type
== bfd_link_hash_defined
6586 || h
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
6587 htab
->tls_get_addr_fd
= h
->oh
;
6590 if (htab
->tls_get_addr_fd
!= NULL
)
6592 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr_fd
;
6594 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6595 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6596 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6598 htab
->tls_get_addr_fd
= h
;
6601 return _bfd_elf_tls_setup (obfd
, info
);
6604 /* Run through all the TLS relocs looking for optimization
6605 opportunities. The linker has been hacked (see ppc64elf.em) to do
6606 a preliminary section layout so that we know the TLS segment
6607 offsets. We can't optimize earlier because some optimizations need
6608 to know the tp offset, and we need to optimize before allocating
6609 dynamic relocations. */
6612 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6616 struct ppc_link_hash_table
*htab
;
6618 if (info
->relocatable
|| info
->shared
)
6621 htab
= ppc_hash_table (info
);
6622 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6624 Elf_Internal_Sym
*locsyms
= NULL
;
6626 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6627 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
6629 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6630 int expecting_tls_get_addr
;
6632 /* Read the relocations. */
6633 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6635 if (relstart
== NULL
)
6638 expecting_tls_get_addr
= 0;
6639 relend
= relstart
+ sec
->reloc_count
;
6640 for (rel
= relstart
; rel
< relend
; rel
++)
6642 enum elf_ppc64_reloc_type r_type
;
6643 unsigned long r_symndx
;
6644 struct elf_link_hash_entry
*h
;
6645 Elf_Internal_Sym
*sym
;
6648 char tls_set
, tls_clear
, tls_type
= 0;
6650 bfd_boolean ok_tprel
, is_local
;
6652 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6653 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
6657 if (elf_section_data (sec
)->relocs
!= relstart
)
6660 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6661 != (unsigned char *) locsyms
))
6668 if (h
->root
.type
!= bfd_link_hash_defined
6669 && h
->root
.type
!= bfd_link_hash_defweak
)
6671 value
= h
->root
.u
.def
.value
;
6674 /* Symbols referenced by TLS relocs must be of type
6675 STT_TLS. So no need for .opd local sym adjust. */
6676 value
= sym
->st_value
;
6684 value
+= sym_sec
->output_offset
;
6685 value
+= sym_sec
->output_section
->vma
;
6686 value
-= htab
->elf
.tls_sec
->vma
;
6687 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
6688 < (bfd_vma
) 1 << 32);
6691 r_type
= ELF64_R_TYPE (rel
->r_info
);
6694 case R_PPC64_GOT_TLSLD16
:
6695 case R_PPC64_GOT_TLSLD16_LO
:
6696 case R_PPC64_GOT_TLSLD16_HI
:
6697 case R_PPC64_GOT_TLSLD16_HA
:
6698 /* These relocs should never be against a symbol
6699 defined in a shared lib. Leave them alone if
6700 that turns out to be the case. */
6701 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
6708 tls_type
= TLS_TLS
| TLS_LD
;
6709 expecting_tls_get_addr
= 1;
6712 case R_PPC64_GOT_TLSGD16
:
6713 case R_PPC64_GOT_TLSGD16_LO
:
6714 case R_PPC64_GOT_TLSGD16_HI
:
6715 case R_PPC64_GOT_TLSGD16_HA
:
6721 tls_set
= TLS_TLS
| TLS_TPRELGD
;
6723 tls_type
= TLS_TLS
| TLS_GD
;
6724 expecting_tls_get_addr
= 1;
6727 case R_PPC64_GOT_TPREL16_DS
:
6728 case R_PPC64_GOT_TPREL16_LO_DS
:
6729 case R_PPC64_GOT_TPREL16_HI
:
6730 case R_PPC64_GOT_TPREL16_HA
:
6731 expecting_tls_get_addr
= 0;
6736 tls_clear
= TLS_TPREL
;
6737 tls_type
= TLS_TLS
| TLS_TPREL
;
6744 case R_PPC64_REL14_BRTAKEN
:
6745 case R_PPC64_REL14_BRNTAKEN
:
6748 && (h
== &htab
->tls_get_addr
->elf
6749 || h
== &htab
->tls_get_addr_fd
->elf
))
6751 if (!expecting_tls_get_addr
6753 && ((ELF64_R_TYPE (rel
[-1].r_info
)
6755 || (ELF64_R_TYPE (rel
[-1].r_info
)
6756 == R_PPC64_TOC16_LO
)))
6758 /* Check for toc tls entries. */
6762 retval
= get_tls_mask (&toc_tls
, NULL
, &locsyms
,
6766 if (toc_tls
!= NULL
)
6767 expecting_tls_get_addr
= retval
> 1;
6770 if (expecting_tls_get_addr
)
6772 struct plt_entry
*ent
;
6773 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
6774 if (ent
->addend
== 0)
6776 if (ent
->plt
.refcount
> 0)
6777 ent
->plt
.refcount
-= 1;
6782 expecting_tls_get_addr
= 0;
6785 case R_PPC64_TPREL64
:
6786 expecting_tls_get_addr
= 0;
6790 tls_set
= TLS_EXPLICIT
;
6791 tls_clear
= TLS_TPREL
;
6797 case R_PPC64_DTPMOD64
:
6798 expecting_tls_get_addr
= 0;
6799 if (rel
+ 1 < relend
6801 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
6802 && rel
[1].r_offset
== rel
->r_offset
+ 8)
6806 tls_set
= TLS_EXPLICIT
| TLS_GD
;
6809 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
6818 tls_set
= TLS_EXPLICIT
;
6824 expecting_tls_get_addr
= 0;
6828 if ((tls_set
& TLS_EXPLICIT
) == 0)
6830 struct got_entry
*ent
;
6832 /* Adjust got entry for this reloc. */
6836 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
6838 for (; ent
!= NULL
; ent
= ent
->next
)
6839 if (ent
->addend
== rel
->r_addend
6840 && ent
->owner
== ibfd
6841 && ent
->tls_type
== tls_type
)
6848 /* We managed to get rid of a got entry. */
6849 if (ent
->got
.refcount
> 0)
6850 ent
->got
.refcount
-= 1;
6855 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6856 we'll lose one or two dyn relocs. */
6857 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
6861 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
6863 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
6869 *tls_mask
|= tls_set
;
6870 *tls_mask
&= ~tls_clear
;
6873 if (elf_section_data (sec
)->relocs
!= relstart
)
6878 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6879 != (unsigned char *) locsyms
))
6881 if (!info
->keep_memory
)
6884 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
6890 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6891 the values of any global symbols in a toc section that has been
6892 edited. Globals in toc sections should be a rarity, so this function
6893 sets a flag if any are found in toc sections other than the one just
6894 edited, so that futher hash table traversals can be avoided. */
6896 struct adjust_toc_info
6899 unsigned long *skip
;
6900 bfd_boolean global_toc_syms
;
6904 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
6906 struct ppc_link_hash_entry
*eh
;
6907 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
6909 if (h
->root
.type
== bfd_link_hash_indirect
)
6912 if (h
->root
.type
== bfd_link_hash_warning
)
6913 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6915 if (h
->root
.type
!= bfd_link_hash_defined
6916 && h
->root
.type
!= bfd_link_hash_defweak
)
6919 eh
= (struct ppc_link_hash_entry
*) h
;
6920 if (eh
->adjust_done
)
6923 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
6925 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
6926 if (skip
!= (unsigned long) -1)
6927 eh
->elf
.root
.u
.def
.value
-= skip
;
6930 (*_bfd_error_handler
)
6931 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
6932 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
6933 eh
->elf
.root
.u
.def
.value
= 0;
6935 eh
->adjust_done
= 1;
6937 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
6938 toc_inf
->global_toc_syms
= TRUE
;
6943 /* Examine all relocs referencing .toc sections in order to remove
6944 unused .toc entries. */
6947 ppc64_elf_edit_toc (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6950 struct adjust_toc_info toc_inf
;
6952 toc_inf
.global_toc_syms
= TRUE
;
6953 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6955 asection
*toc
, *sec
;
6956 Elf_Internal_Shdr
*symtab_hdr
;
6957 Elf_Internal_Sym
*local_syms
;
6958 struct elf_link_hash_entry
**sym_hashes
;
6959 Elf_Internal_Rela
*relstart
, *rel
;
6960 unsigned long *skip
, *drop
;
6961 unsigned char *used
;
6962 unsigned char *keep
, last
, some_unused
;
6964 toc
= bfd_get_section_by_name (ibfd
, ".toc");
6967 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
6968 || elf_discarded_section (toc
))
6972 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6973 sym_hashes
= elf_sym_hashes (ibfd
);
6975 /* Look at sections dropped from the final link. */
6978 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6980 if (sec
->reloc_count
== 0
6981 || !elf_discarded_section (sec
)
6982 || get_opd_info (sec
)
6983 || (sec
->flags
& SEC_ALLOC
) == 0
6984 || (sec
->flags
& SEC_DEBUGGING
) != 0)
6987 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
6988 if (relstart
== NULL
)
6991 /* Run through the relocs to see which toc entries might be
6993 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
6995 enum elf_ppc64_reloc_type r_type
;
6996 unsigned long r_symndx
;
6998 struct elf_link_hash_entry
*h
;
6999 Elf_Internal_Sym
*sym
;
7002 r_type
= ELF64_R_TYPE (rel
->r_info
);
7009 case R_PPC64_TOC16_LO
:
7010 case R_PPC64_TOC16_HI
:
7011 case R_PPC64_TOC16_HA
:
7012 case R_PPC64_TOC16_DS
:
7013 case R_PPC64_TOC16_LO_DS
:
7017 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7018 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7026 val
= h
->root
.u
.def
.value
;
7028 val
= sym
->st_value
;
7029 val
+= rel
->r_addend
;
7031 if (val
>= toc
->size
)
7034 /* Anything in the toc ought to be aligned to 8 bytes.
7035 If not, don't mark as unused. */
7041 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
7049 if (elf_section_data (sec
)->relocs
!= relstart
)
7056 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
7060 if (local_syms
!= NULL
7061 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7065 && elf_section_data (sec
)->relocs
!= relstart
)
7072 /* Now check all kept sections that might reference the toc. */
7073 for (sec
= ibfd
->sections
;
7075 /* Check the toc itself last. */
7076 sec
= (sec
== toc
? NULL
7077 : sec
->next
== toc
&& sec
->next
->next
? sec
->next
->next
7078 : sec
->next
== NULL
? toc
7083 if (sec
->reloc_count
== 0
7084 || elf_discarded_section (sec
)
7085 || get_opd_info (sec
)
7086 || (sec
->flags
& SEC_ALLOC
) == 0
7087 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7090 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
7091 if (relstart
== NULL
)
7094 /* Mark toc entries referenced as used. */
7097 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7099 enum elf_ppc64_reloc_type r_type
;
7100 unsigned long r_symndx
;
7102 struct elf_link_hash_entry
*h
;
7103 Elf_Internal_Sym
*sym
;
7106 r_type
= ELF64_R_TYPE (rel
->r_info
);
7110 case R_PPC64_TOC16_LO
:
7111 case R_PPC64_TOC16_HI
:
7112 case R_PPC64_TOC16_HA
:
7113 case R_PPC64_TOC16_DS
:
7114 case R_PPC64_TOC16_LO_DS
:
7115 /* In case we're taking addresses of toc entries. */
7116 case R_PPC64_ADDR64
:
7123 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7124 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7135 val
= h
->root
.u
.def
.value
;
7137 val
= sym
->st_value
;
7138 val
+= rel
->r_addend
;
7140 if (val
>= toc
->size
)
7143 /* For the toc section, we only mark as used if
7144 this entry itself isn't unused. */
7147 && (used
[rel
->r_offset
>> 3]
7148 || !skip
[rel
->r_offset
>> 3]))
7149 /* Do all the relocs again, to catch reference
7158 /* Merge the used and skip arrays. Assume that TOC
7159 doublewords not appearing as either used or unused belong
7160 to to an entry more than one doubleword in size. */
7161 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
7162 drop
< skip
+ (toc
->size
+ 7) / 8;
7183 bfd_byte
*contents
, *src
;
7186 /* Shuffle the toc contents, and at the same time convert the
7187 skip array from booleans into offsets. */
7188 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
7191 elf_section_data (toc
)->this_hdr
.contents
= contents
;
7193 for (src
= contents
, off
= 0, drop
= skip
;
7194 src
< contents
+ toc
->size
;
7199 *drop
= (unsigned long) -1;
7205 memcpy (src
- off
, src
, 8);
7208 toc
->rawsize
= toc
->size
;
7209 toc
->size
= src
- contents
- off
;
7211 if (toc
->reloc_count
!= 0)
7213 Elf_Internal_Rela
*wrel
;
7216 /* Read toc relocs. */
7217 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
7219 if (relstart
== NULL
)
7222 /* Remove unused toc relocs, and adjust those we keep. */
7224 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
7225 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
7227 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
7228 wrel
->r_info
= rel
->r_info
;
7229 wrel
->r_addend
= rel
->r_addend
;
7232 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
7233 &local_syms
, NULL
, NULL
))
7236 toc
->reloc_count
= wrel
- relstart
;
7237 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
7238 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
7239 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
7242 /* Adjust addends for relocs against the toc section sym. */
7243 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7245 if (sec
->reloc_count
== 0
7246 || elf_discarded_section (sec
))
7249 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7251 if (relstart
== NULL
)
7254 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7256 enum elf_ppc64_reloc_type r_type
;
7257 unsigned long r_symndx
;
7259 struct elf_link_hash_entry
*h
;
7260 Elf_Internal_Sym
*sym
;
7262 r_type
= ELF64_R_TYPE (rel
->r_info
);
7269 case R_PPC64_TOC16_LO
:
7270 case R_PPC64_TOC16_HI
:
7271 case R_PPC64_TOC16_HA
:
7272 case R_PPC64_TOC16_DS
:
7273 case R_PPC64_TOC16_LO_DS
:
7274 case R_PPC64_ADDR64
:
7278 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7279 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7283 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
7286 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
7290 /* We shouldn't have local or global symbols defined in the TOC,
7291 but handle them anyway. */
7292 if (local_syms
!= NULL
)
7294 Elf_Internal_Sym
*sym
;
7296 for (sym
= local_syms
;
7297 sym
< local_syms
+ symtab_hdr
->sh_info
;
7299 if (sym
->st_shndx
!= SHN_UNDEF
7300 && (sym
->st_shndx
< SHN_LORESERVE
7301 || sym
->st_shndx
> SHN_HIRESERVE
)
7302 && sym
->st_value
!= 0
7303 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
7305 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
7306 sym
->st_value
-= skip
[sym
->st_value
>> 3];
7309 (*_bfd_error_handler
)
7310 (_("%s defined in removed toc entry"),
7311 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7314 sym
->st_shndx
= SHN_ABS
;
7316 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7320 /* Finally, adjust any global syms defined in the toc. */
7321 if (toc_inf
.global_toc_syms
)
7324 toc_inf
.skip
= skip
;
7325 toc_inf
.global_toc_syms
= FALSE
;
7326 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
7331 if (local_syms
!= NULL
7332 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7334 if (!info
->keep_memory
)
7337 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7345 /* Allocate space in .plt, .got and associated reloc sections for
7349 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7351 struct bfd_link_info
*info
;
7352 struct ppc_link_hash_table
*htab
;
7354 struct ppc_link_hash_entry
*eh
;
7355 struct ppc_dyn_relocs
*p
;
7356 struct got_entry
*gent
;
7358 if (h
->root
.type
== bfd_link_hash_indirect
)
7361 if (h
->root
.type
== bfd_link_hash_warning
)
7362 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7364 info
= (struct bfd_link_info
*) inf
;
7365 htab
= ppc_hash_table (info
);
7367 if (htab
->elf
.dynamic_sections_created
7369 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
7371 struct plt_entry
*pent
;
7372 bfd_boolean doneone
= FALSE
;
7373 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7374 if (pent
->plt
.refcount
> 0)
7376 /* If this is the first .plt entry, make room for the special
7380 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
7382 pent
->plt
.offset
= s
->size
;
7384 /* Make room for this entry. */
7385 s
->size
+= PLT_ENTRY_SIZE
;
7387 /* Make room for the .glink code. */
7390 s
->size
+= GLINK_CALL_STUB_SIZE
;
7391 /* We need bigger stubs past index 32767. */
7392 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
7396 /* We also need to make an entry in the .rela.plt section. */
7398 s
->size
+= sizeof (Elf64_External_Rela
);
7402 pent
->plt
.offset
= (bfd_vma
) -1;
7405 h
->plt
.plist
= NULL
;
7411 h
->plt
.plist
= NULL
;
7415 eh
= (struct ppc_link_hash_entry
*) h
;
7416 /* Run through the TLS GD got entries first if we're changing them
7418 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
7419 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7420 if (gent
->got
.refcount
> 0
7421 && (gent
->tls_type
& TLS_GD
) != 0)
7423 /* This was a GD entry that has been converted to TPREL. If
7424 there happens to be a TPREL entry we can use that one. */
7425 struct got_entry
*ent
;
7426 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
7427 if (ent
->got
.refcount
> 0
7428 && (ent
->tls_type
& TLS_TPREL
) != 0
7429 && ent
->addend
== gent
->addend
7430 && ent
->owner
== gent
->owner
)
7432 gent
->got
.refcount
= 0;
7436 /* If not, then we'll be using our own TPREL entry. */
7437 if (gent
->got
.refcount
!= 0)
7438 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
7441 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7442 if (gent
->got
.refcount
> 0)
7446 /* Make sure this symbol is output as a dynamic symbol.
7447 Undefined weak syms won't yet be marked as dynamic,
7448 nor will all TLS symbols. */
7449 if (h
->dynindx
== -1
7450 && !h
->forced_local
)
7452 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7456 if ((gent
->tls_type
& TLS_LD
) != 0
7459 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
7463 s
= ppc64_elf_tdata (gent
->owner
)->got
;
7464 gent
->got
.offset
= s
->size
;
7466 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
7467 dyn
= htab
->elf
.dynamic_sections_created
;
7469 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
7470 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7471 || h
->root
.type
!= bfd_link_hash_undefweak
))
7472 ppc64_elf_tdata (gent
->owner
)->relgot
->size
7473 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
7474 ? 2 * sizeof (Elf64_External_Rela
)
7475 : sizeof (Elf64_External_Rela
));
7478 gent
->got
.offset
= (bfd_vma
) -1;
7480 if (eh
->dyn_relocs
== NULL
)
7483 /* In the shared -Bsymbolic case, discard space allocated for
7484 dynamic pc-relative relocs against symbols which turn out to be
7485 defined in regular objects. For the normal shared case, discard
7486 space for relocs that have become local due to symbol visibility
7491 /* Relocs that use pc_count are those that appear on a call insn,
7492 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7493 generated via assembly. We want calls to protected symbols to
7494 resolve directly to the function rather than going via the plt.
7495 If people want function pointer comparisons to work as expected
7496 then they should avoid writing weird assembly. */
7497 if (SYMBOL_CALLS_LOCAL (info
, h
))
7499 struct ppc_dyn_relocs
**pp
;
7501 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
7503 p
->count
-= p
->pc_count
;
7512 /* Also discard relocs on undefined weak syms with non-default
7514 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7515 && h
->root
.type
== bfd_link_hash_undefweak
)
7516 eh
->dyn_relocs
= NULL
;
7518 else if (ELIMINATE_COPY_RELOCS
)
7520 /* For the non-shared case, discard space for relocs against
7521 symbols which turn out to need copy relocs or are not
7528 /* Make sure this symbol is output as a dynamic symbol.
7529 Undefined weak syms won't yet be marked as dynamic. */
7530 if (h
->dynindx
== -1
7531 && !h
->forced_local
)
7533 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7537 /* If that succeeded, we know we'll be keeping all the
7539 if (h
->dynindx
!= -1)
7543 eh
->dyn_relocs
= NULL
;
7548 /* Finally, allocate space. */
7549 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7551 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
7552 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7558 /* Find any dynamic relocs that apply to read-only sections. */
7561 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7563 struct ppc_link_hash_entry
*eh
;
7564 struct ppc_dyn_relocs
*p
;
7566 if (h
->root
.type
== bfd_link_hash_warning
)
7567 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7569 eh
= (struct ppc_link_hash_entry
*) h
;
7570 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7572 asection
*s
= p
->sec
->output_section
;
7574 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7576 struct bfd_link_info
*info
= inf
;
7578 info
->flags
|= DF_TEXTREL
;
7580 /* Not an error, just cut short the traversal. */
7587 /* Set the sizes of the dynamic sections. */
7590 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
7591 struct bfd_link_info
*info
)
7593 struct ppc_link_hash_table
*htab
;
7599 htab
= ppc_hash_table (info
);
7600 dynobj
= htab
->elf
.dynobj
;
7604 if (htab
->elf
.dynamic_sections_created
)
7606 /* Set the contents of the .interp section to the interpreter. */
7607 if (info
->executable
)
7609 s
= bfd_get_section_by_name (dynobj
, ".interp");
7612 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
7613 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
7617 /* Set up .got offsets for local syms, and space for local dynamic
7619 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7621 struct got_entry
**lgot_ents
;
7622 struct got_entry
**end_lgot_ents
;
7624 bfd_size_type locsymcount
;
7625 Elf_Internal_Shdr
*symtab_hdr
;
7628 if (!is_ppc64_elf_target (ibfd
->xvec
))
7631 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
7633 s
= ppc64_elf_tdata (ibfd
)->got
;
7634 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7638 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7639 srel
->size
+= sizeof (Elf64_External_Rela
);
7643 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
7645 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
7647 struct ppc_dyn_relocs
*p
;
7649 for (p
= *((struct ppc_dyn_relocs
**)
7650 &elf_section_data (s
)->local_dynrel
);
7654 if (!bfd_is_abs_section (p
->sec
)
7655 && bfd_is_abs_section (p
->sec
->output_section
))
7657 /* Input section has been discarded, either because
7658 it is a copy of a linkonce section or due to
7659 linker script /DISCARD/, so we'll be discarding
7662 else if (p
->count
!= 0)
7664 srel
= elf_section_data (p
->sec
)->sreloc
;
7665 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7666 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
7667 info
->flags
|= DF_TEXTREL
;
7672 lgot_ents
= elf_local_got_ents (ibfd
);
7676 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7677 locsymcount
= symtab_hdr
->sh_info
;
7678 end_lgot_ents
= lgot_ents
+ locsymcount
;
7679 lgot_masks
= (char *) end_lgot_ents
;
7680 s
= ppc64_elf_tdata (ibfd
)->got
;
7681 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7682 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
7684 struct got_entry
*ent
;
7686 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
7687 if (ent
->got
.refcount
> 0)
7689 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
7691 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
7693 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7696 srel
->size
+= sizeof (Elf64_External_Rela
);
7698 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
7702 ent
->got
.offset
= s
->size
;
7703 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
7707 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
7713 srel
->size
+= sizeof (Elf64_External_Rela
);
7718 ent
->got
.offset
= (bfd_vma
) -1;
7722 /* Allocate global sym .plt and .got entries, and space for global
7723 sym dynamic relocs. */
7724 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
7726 /* We now have determined the sizes of the various dynamic sections.
7727 Allocate memory for them. */
7729 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
7731 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7734 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
7735 /* These haven't been allocated yet; don't strip. */
7737 else if (s
== htab
->got
7739 || s
== htab
->glink
)
7741 /* Strip this section if we don't need it; see the
7744 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
7748 /* If we don't need this section, strip it from the
7749 output file. This is mostly to handle .rela.bss and
7750 .rela.plt. We must create both sections in
7751 create_dynamic_sections, because they must be created
7752 before the linker maps input sections to output
7753 sections. The linker does that before
7754 adjust_dynamic_symbol is called, and it is that
7755 function which decides whether anything needs to go
7756 into these sections. */
7760 if (s
!= htab
->relplt
)
7763 /* We use the reloc_count field as a counter if we need
7764 to copy relocs into the output file. */
7770 /* It's not one of our sections, so don't allocate space. */
7776 s
->flags
|= SEC_EXCLUDE
;
7780 /* .plt is in the bss section. We don't initialise it. */
7784 /* Allocate memory for the section contents. We use bfd_zalloc
7785 here in case unused entries are not reclaimed before the
7786 section's contents are written out. This should not happen,
7787 but this way if it does we get a R_PPC64_NONE reloc in .rela
7788 sections instead of garbage.
7789 We also rely on the section contents being zero when writing
7791 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
7792 if (s
->contents
== NULL
)
7796 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7798 if (!is_ppc64_elf_target (ibfd
->xvec
))
7801 s
= ppc64_elf_tdata (ibfd
)->got
;
7802 if (s
!= NULL
&& s
!= htab
->got
)
7805 s
->flags
|= SEC_EXCLUDE
;
7808 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7809 if (s
->contents
== NULL
)
7813 s
= ppc64_elf_tdata (ibfd
)->relgot
;
7817 s
->flags
|= SEC_EXCLUDE
;
7820 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7821 if (s
->contents
== NULL
)
7829 if (htab
->elf
.dynamic_sections_created
)
7831 /* Add some entries to the .dynamic section. We fill in the
7832 values later, in ppc64_elf_finish_dynamic_sections, but we
7833 must add the entries now so that we get the correct size for
7834 the .dynamic section. The DT_DEBUG entry is filled in by the
7835 dynamic linker and used by the debugger. */
7836 #define add_dynamic_entry(TAG, VAL) \
7837 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7839 if (info
->executable
)
7841 if (!add_dynamic_entry (DT_DEBUG
, 0))
7845 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
7847 if (!add_dynamic_entry (DT_PLTGOT
, 0)
7848 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
7849 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
7850 || !add_dynamic_entry (DT_JMPREL
, 0)
7851 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
7857 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
7858 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
7864 if (!add_dynamic_entry (DT_RELA
, 0)
7865 || !add_dynamic_entry (DT_RELASZ
, 0)
7866 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
7869 /* If any dynamic relocs apply to a read-only section,
7870 then we need a DT_TEXTREL entry. */
7871 if ((info
->flags
& DF_TEXTREL
) == 0)
7872 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
7874 if ((info
->flags
& DF_TEXTREL
) != 0)
7876 if (!add_dynamic_entry (DT_TEXTREL
, 0))
7881 #undef add_dynamic_entry
7886 /* Determine the type of stub needed, if any, for a call. */
7888 static inline enum ppc_stub_type
7889 ppc_type_of_stub (asection
*input_sec
,
7890 const Elf_Internal_Rela
*rel
,
7891 struct ppc_link_hash_entry
**hash
,
7892 bfd_vma destination
)
7894 struct ppc_link_hash_entry
*h
= *hash
;
7896 bfd_vma branch_offset
;
7897 bfd_vma max_branch_offset
;
7898 enum elf_ppc64_reloc_type r_type
;
7903 && h
->oh
->is_func_descriptor
)
7906 if (h
->elf
.dynindx
!= -1)
7908 struct plt_entry
*ent
;
7910 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7911 if (ent
->addend
== rel
->r_addend
7912 && ent
->plt
.offset
!= (bfd_vma
) -1)
7915 return ppc_stub_plt_call
;
7919 if (!(h
->elf
.root
.type
== bfd_link_hash_defined
7920 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
7921 || h
->elf
.root
.u
.def
.section
->output_section
== NULL
)
7922 return ppc_stub_none
;
7925 /* Determine where the call point is. */
7926 location
= (input_sec
->output_offset
7927 + input_sec
->output_section
->vma
7930 branch_offset
= destination
- location
;
7931 r_type
= ELF64_R_TYPE (rel
->r_info
);
7933 /* Determine if a long branch stub is needed. */
7934 max_branch_offset
= 1 << 25;
7935 if (r_type
!= R_PPC64_REL24
)
7936 max_branch_offset
= 1 << 15;
7938 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
7939 /* We need a stub. Figure out whether a long_branch or plt_branch
7941 return ppc_stub_long_branch
;
7943 return ppc_stub_none
;
7946 /* Build a .plt call stub. */
7948 static inline bfd_byte
*
7949 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
7951 #define PPC_LO(v) ((v) & 0xffff)
7952 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7953 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7955 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
7956 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
7957 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7958 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7959 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7961 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
7962 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7963 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7965 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
7966 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7967 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
7972 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7974 struct ppc_stub_hash_entry
*stub_entry
;
7975 struct ppc_branch_hash_entry
*br_entry
;
7976 struct bfd_link_info
*info
;
7977 struct ppc_link_hash_table
*htab
;
7981 struct plt_entry
*ent
;
7985 /* Massage our args to the form they really have. */
7986 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
7989 htab
= ppc_hash_table (info
);
7991 /* Make a note of the offset within the stubs for this entry. */
7992 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
7993 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
7995 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
7996 switch (stub_entry
->stub_type
)
7998 case ppc_stub_long_branch
:
7999 case ppc_stub_long_branch_r2off
:
8000 /* Branches are relative. This is where we are going to. */
8001 off
= dest
= (stub_entry
->target_value
8002 + stub_entry
->target_section
->output_offset
8003 + stub_entry
->target_section
->output_section
->vma
);
8005 /* And this is where we are coming from. */
8006 off
-= (stub_entry
->stub_offset
8007 + stub_entry
->stub_sec
->output_offset
8008 + stub_entry
->stub_sec
->output_section
->vma
);
8010 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
8016 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8017 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8018 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8020 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8022 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8027 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
8029 BFD_ASSERT (off
+ (1 << 25) < (bfd_vma
) (1 << 26));
8031 if (info
->emitrelocations
)
8033 Elf_Internal_Rela
*relocs
, *r
;
8034 struct bfd_elf_section_data
*elfsec_data
;
8036 elfsec_data
= elf_section_data (stub_entry
->stub_sec
);
8037 relocs
= elfsec_data
->relocs
;
8040 bfd_size_type relsize
;
8041 relsize
= stub_entry
->stub_sec
->reloc_count
* sizeof (*relocs
);
8042 relocs
= bfd_alloc (htab
->stub_bfd
, relsize
);
8045 elfsec_data
->relocs
= relocs
;
8046 elfsec_data
->rel_hdr
.sh_size
= relsize
;
8047 elfsec_data
->rel_hdr
.sh_entsize
= 24;
8048 stub_entry
->stub_sec
->reloc_count
= 0;
8050 r
= relocs
+ stub_entry
->stub_sec
->reloc_count
;
8051 stub_entry
->stub_sec
->reloc_count
+= 1;
8052 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8053 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
8055 if (stub_entry
->h
!= NULL
)
8057 struct elf_link_hash_entry
**hashes
;
8058 unsigned long symndx
;
8059 struct ppc_link_hash_entry
*h
;
8061 hashes
= elf_sym_hashes (htab
->stub_bfd
);
8064 bfd_size_type hsize
;
8066 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
8067 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
8070 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
8071 htab
->stub_globals
= 1;
8073 symndx
= htab
->stub_globals
++;
8075 hashes
[symndx
] = &h
->elf
;
8076 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
8077 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
8079 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
8080 /* H is an opd symbol. The addend must be zero. */
8084 off
= (h
->elf
.root
.u
.def
.value
8085 + h
->elf
.root
.u
.def
.section
->output_offset
8086 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
8093 case ppc_stub_plt_branch
:
8094 case ppc_stub_plt_branch_r2off
:
8095 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8096 stub_entry
->root
.string
+ 9,
8098 if (br_entry
== NULL
)
8100 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
8101 stub_entry
->root
.string
+ 9);
8102 htab
->stub_error
= TRUE
;
8106 off
= (stub_entry
->target_value
8107 + stub_entry
->target_section
->output_offset
8108 + stub_entry
->target_section
->output_section
->vma
);
8110 bfd_put_64 (htab
->brlt
->owner
, off
,
8111 htab
->brlt
->contents
+ br_entry
->offset
);
8113 if (htab
->relbrlt
!= NULL
)
8115 /* Create a reloc for the branch lookup table entry. */
8116 Elf_Internal_Rela rela
;
8119 rela
.r_offset
= (br_entry
->offset
8120 + htab
->brlt
->output_offset
8121 + htab
->brlt
->output_section
->vma
);
8122 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8123 rela
.r_addend
= off
;
8125 rl
= htab
->relbrlt
->contents
;
8126 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
8127 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
8130 off
= (br_entry
->offset
8131 + htab
->brlt
->output_offset
8132 + htab
->brlt
->output_section
->vma
8133 - elf_gp (htab
->brlt
->output_section
->owner
)
8134 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8136 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8138 (*_bfd_error_handler
)
8139 (_("linkage table error against `%s'"),
8140 stub_entry
->root
.string
);
8141 bfd_set_error (bfd_error_bad_value
);
8142 htab
->stub_error
= TRUE
;
8147 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
8149 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
8151 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
8158 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8159 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8160 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8162 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
8164 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
8166 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8168 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8172 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
8174 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
8177 case ppc_stub_plt_call
:
8178 /* Do the best we can for shared libraries built without
8179 exporting ".foo" for each "foo". This can happen when symbol
8180 versioning scripts strip all bar a subset of symbols. */
8181 if (stub_entry
->h
->oh
!= NULL
8182 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
8183 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8185 /* Point the symbol at the stub. There may be multiple stubs,
8186 we don't really care; The main thing is to make this sym
8187 defined somewhere. Maybe defining the symbol in the stub
8188 section is a silly idea. If we didn't do this, htab->top_id
8190 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
8191 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
8192 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
8195 /* Now build the stub. */
8197 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8198 if (ent
->addend
== stub_entry
->addend
)
8200 off
= ent
->plt
.offset
;
8203 if (off
>= (bfd_vma
) -2)
8206 off
&= ~ (bfd_vma
) 1;
8207 off
+= (htab
->plt
->output_offset
8208 + htab
->plt
->output_section
->vma
8209 - elf_gp (htab
->plt
->output_section
->owner
)
8210 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8212 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8214 (*_bfd_error_handler
)
8215 (_("linkage table error against `%s'"),
8216 stub_entry
->h
->elf
.root
.root
.string
);
8217 bfd_set_error (bfd_error_bad_value
);
8218 htab
->stub_error
= TRUE
;
8222 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
8231 stub_entry
->stub_sec
->size
+= size
;
8233 if (htab
->emit_stub_syms
)
8235 struct elf_link_hash_entry
*h
;
8238 const char *const stub_str
[] = { "long_branch",
8239 "long_branch_r2off",
8244 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
8245 len2
= strlen (stub_entry
->root
.string
);
8246 name
= bfd_malloc (len1
+ len2
+ 2);
8249 memcpy (name
, stub_entry
->root
.string
, 9);
8250 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
8251 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
8252 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
8255 if (h
->root
.type
== bfd_link_hash_new
)
8257 h
->root
.type
= bfd_link_hash_defined
;
8258 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
8259 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
8262 h
->ref_regular_nonweak
= 1;
8263 h
->forced_local
= 1;
8271 /* As above, but don't actually build the stub. Just bump offset so
8272 we know stub section sizes, and select plt_branch stubs where
8273 long_branch stubs won't do. */
8276 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8278 struct ppc_stub_hash_entry
*stub_entry
;
8279 struct bfd_link_info
*info
;
8280 struct ppc_link_hash_table
*htab
;
8284 /* Massage our args to the form they really have. */
8285 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8288 htab
= ppc_hash_table (info
);
8290 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
8292 struct plt_entry
*ent
;
8294 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8295 if (ent
->addend
== stub_entry
->addend
)
8297 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
8300 if (off
>= (bfd_vma
) -2)
8302 off
+= (htab
->plt
->output_offset
8303 + htab
->plt
->output_section
->vma
8304 - elf_gp (htab
->plt
->output_section
->owner
)
8305 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8307 size
= PLT_CALL_STUB_SIZE
;
8308 if (PPC_HA (off
+ 16) != PPC_HA (off
))
8313 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8315 off
= (stub_entry
->target_value
8316 + stub_entry
->target_section
->output_offset
8317 + stub_entry
->target_section
->output_section
->vma
);
8318 off
-= (stub_entry
->stub_sec
->size
8319 + stub_entry
->stub_sec
->output_offset
8320 + stub_entry
->stub_sec
->output_section
->vma
);
8322 /* Reset the stub type from the plt variant in case we now
8323 can reach with a shorter stub. */
8324 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
8325 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
8328 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8334 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8335 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8337 struct ppc_branch_hash_entry
*br_entry
;
8339 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8340 stub_entry
->root
.string
+ 9,
8342 if (br_entry
== NULL
)
8344 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
8345 stub_entry
->root
.string
+ 9);
8346 htab
->stub_error
= TRUE
;
8350 if (br_entry
->iter
!= htab
->stub_iteration
)
8352 br_entry
->iter
= htab
->stub_iteration
;
8353 br_entry
->offset
= htab
->brlt
->size
;
8354 htab
->brlt
->size
+= 8;
8356 if (htab
->relbrlt
!= NULL
)
8357 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
8360 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
8362 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
8366 if (info
->emitrelocations
8367 && (stub_entry
->stub_type
== ppc_stub_long_branch
8368 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
8369 stub_entry
->stub_sec
->reloc_count
+= 1;
8372 stub_entry
->stub_sec
->size
+= size
;
8376 /* Set up various things so that we can make a list of input sections
8377 for each output section included in the link. Returns -1 on error,
8378 0 when no stubs will be needed, and 1 on success. */
8381 ppc64_elf_setup_section_lists (bfd
*output_bfd
,
8382 struct bfd_link_info
*info
,
8386 int top_id
, top_index
, id
;
8388 asection
**input_list
;
8390 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8392 htab
->no_multi_toc
= no_multi_toc
;
8394 if (htab
->brlt
== NULL
)
8397 /* Find the top input section id. */
8398 for (input_bfd
= info
->input_bfds
, top_id
= 3;
8400 input_bfd
= input_bfd
->link_next
)
8402 for (section
= input_bfd
->sections
;
8404 section
= section
->next
)
8406 if (top_id
< section
->id
)
8407 top_id
= section
->id
;
8411 htab
->top_id
= top_id
;
8412 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
8413 htab
->stub_group
= bfd_zmalloc (amt
);
8414 if (htab
->stub_group
== NULL
)
8417 /* Set toc_off for com, und, abs and ind sections. */
8418 for (id
= 0; id
< 3; id
++)
8419 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
8421 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
8423 /* We can't use output_bfd->section_count here to find the top output
8424 section index as some sections may have been removed, and
8425 strip_excluded_output_sections doesn't renumber the indices. */
8426 for (section
= output_bfd
->sections
, top_index
= 0;
8428 section
= section
->next
)
8430 if (top_index
< section
->index
)
8431 top_index
= section
->index
;
8434 htab
->top_index
= top_index
;
8435 amt
= sizeof (asection
*) * (top_index
+ 1);
8436 input_list
= bfd_zmalloc (amt
);
8437 htab
->input_list
= input_list
;
8438 if (input_list
== NULL
)
8444 /* The linker repeatedly calls this function for each TOC input section
8445 and linker generated GOT section. Group input bfds such that the toc
8446 within a group is less than 64k in size. Will break with cute linker
8447 scripts that play games with dot in the output toc section. */
8450 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
8452 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8454 if (!htab
->no_multi_toc
)
8456 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
8457 bfd_vma off
= addr
- htab
->toc_curr
;
8459 if (off
+ isec
->size
> 0x10000)
8460 htab
->toc_curr
= addr
;
8462 elf_gp (isec
->owner
) = (htab
->toc_curr
8463 - elf_gp (isec
->output_section
->owner
)
8468 /* Called after the last call to the above function. */
8471 ppc64_elf_reinit_toc (bfd
*output_bfd
, struct bfd_link_info
*info
)
8473 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8475 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (output_bfd
);
8477 /* toc_curr tracks the TOC offset used for code sections below in
8478 ppc64_elf_next_input_section. Start off at 0x8000. */
8479 htab
->toc_curr
= TOC_BASE_OFF
;
8482 /* No toc references were found in ISEC. If the code in ISEC makes no
8483 calls, then there's no need to use toc adjusting stubs when branching
8484 into ISEC. Actually, indirect calls from ISEC are OK as they will
8485 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8486 needed, and 2 if a cyclical call-graph was found but no other reason
8487 for a stub was detected. If called from the top level, a return of
8488 2 means the same as a return of 0. */
8491 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
8493 Elf_Internal_Rela
*relstart
, *rel
;
8494 Elf_Internal_Sym
*local_syms
;
8496 struct ppc_link_hash_table
*htab
;
8498 /* We know none of our code bearing sections will need toc stubs. */
8499 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
8502 if (isec
->size
== 0)
8505 if (isec
->output_section
== NULL
)
8508 /* Hack for linux kernel. .fixup contains branches, but only back to
8509 the function that hit an exception. */
8510 if (strcmp (isec
->name
, ".fixup") == 0)
8513 if (isec
->reloc_count
== 0)
8516 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
8518 if (relstart
== NULL
)
8521 /* Look for branches to outside of this section. */
8524 htab
= ppc_hash_table (info
);
8525 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
8527 enum elf_ppc64_reloc_type r_type
;
8528 unsigned long r_symndx
;
8529 struct elf_link_hash_entry
*h
;
8530 Elf_Internal_Sym
*sym
;
8536 r_type
= ELF64_R_TYPE (rel
->r_info
);
8537 if (r_type
!= R_PPC64_REL24
8538 && r_type
!= R_PPC64_REL14
8539 && r_type
!= R_PPC64_REL14_BRTAKEN
8540 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8543 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8544 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
8551 /* Calls to dynamic lib functions go through a plt call stub
8552 that uses r2. Branches to undefined symbols might be a call
8553 using old-style dot symbols that can be satisfied by a plt
8554 call into a new-style dynamic library. */
8555 if (sym_sec
== NULL
)
8557 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8560 && eh
->oh
->elf
.plt
.plist
!= NULL
)
8566 /* Ignore other undefined symbols. */
8570 /* Assume branches to other sections not included in the link need
8571 stubs too, to cover -R and absolute syms. */
8572 if (sym_sec
->output_section
== NULL
)
8579 sym_value
= sym
->st_value
;
8582 if (h
->root
.type
!= bfd_link_hash_defined
8583 && h
->root
.type
!= bfd_link_hash_defweak
)
8585 sym_value
= h
->root
.u
.def
.value
;
8587 sym_value
+= rel
->r_addend
;
8589 /* If this branch reloc uses an opd sym, find the code section. */
8590 opd_adjust
= get_opd_info (sym_sec
);
8591 if (opd_adjust
!= NULL
)
8597 adjust
= opd_adjust
[sym
->st_value
/ 8];
8599 /* Assume deleted functions won't ever be called. */
8601 sym_value
+= adjust
;
8604 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
8605 if (dest
== (bfd_vma
) -1)
8610 + sym_sec
->output_offset
8611 + sym_sec
->output_section
->vma
);
8613 /* Ignore branch to self. */
8614 if (sym_sec
== isec
)
8617 /* If the called function uses the toc, we need a stub. */
8618 if (sym_sec
->has_toc_reloc
8619 || sym_sec
->makes_toc_func_call
)
8625 /* Assume any branch that needs a long branch stub might in fact
8626 need a plt_branch stub. A plt_branch stub uses r2. */
8627 else if (dest
- (isec
->output_offset
8628 + isec
->output_section
->vma
8629 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
8635 /* If calling back to a section in the process of being tested, we
8636 can't say for sure that no toc adjusting stubs are needed, so
8637 don't return zero. */
8638 else if (sym_sec
->call_check_in_progress
)
8641 /* Branches to another section that itself doesn't have any TOC
8642 references are OK. Recursively call ourselves to check. */
8643 else if (sym_sec
->id
<= htab
->top_id
8644 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
8648 /* Mark current section as indeterminate, so that other
8649 sections that call back to current won't be marked as
8651 isec
->call_check_in_progress
= 1;
8652 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
8653 isec
->call_check_in_progress
= 0;
8657 /* An error. Exit. */
8661 else if (recur
<= 1)
8663 /* Known result. Mark as checked and set section flag. */
8664 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
8667 sym_sec
->makes_toc_func_call
= 1;
8674 /* Unknown result. Continue checking. */
8680 if (local_syms
!= NULL
8681 && (elf_tdata (isec
->owner
)->symtab_hdr
.contents
8682 != (unsigned char *) local_syms
))
8684 if (elf_section_data (isec
)->relocs
!= relstart
)
8690 /* The linker repeatedly calls this function for each input section,
8691 in the order that input sections are linked into output sections.
8692 Build lists of input sections to determine groupings between which
8693 we may insert linker stubs. */
8696 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
8698 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8700 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
8701 && isec
->output_section
->index
<= htab
->top_index
)
8703 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
8704 /* Steal the link_sec pointer for our list. */
8705 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8706 /* This happens to make the list in reverse order,
8707 which is what we want. */
8708 PREV_SEC (isec
) = *list
;
8712 if (htab
->multi_toc_needed
)
8714 /* If a code section has a function that uses the TOC then we need
8715 to use the right TOC (obviously). Also, make sure that .opd gets
8716 the correct TOC value for R_PPC64_TOC relocs that don't have or
8717 can't find their function symbol (shouldn't ever happen now). */
8718 if (isec
->has_toc_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
8720 if (elf_gp (isec
->owner
) != 0)
8721 htab
->toc_curr
= elf_gp (isec
->owner
);
8723 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
8725 int ret
= toc_adjusting_stub_needed (info
, isec
);
8729 isec
->makes_toc_func_call
= ret
& 1;
8733 /* Functions that don't use the TOC can belong in any TOC group.
8734 Use the last TOC base. This happens to make _init and _fini
8736 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
8740 /* See whether we can group stub sections together. Grouping stub
8741 sections may result in fewer stubs. More importantly, we need to
8742 put all .init* and .fini* stubs at the beginning of the .init or
8743 .fini output sections respectively, because glibc splits the
8744 _init and _fini functions into multiple parts. Putting a stub in
8745 the middle of a function is not a good idea. */
8748 group_sections (struct ppc_link_hash_table
*htab
,
8749 bfd_size_type stub_group_size
,
8750 bfd_boolean stubs_always_before_branch
)
8752 asection
**list
= htab
->input_list
+ htab
->top_index
;
8755 asection
*tail
= *list
;
8756 while (tail
!= NULL
)
8760 bfd_size_type total
;
8761 bfd_boolean big_sec
;
8766 big_sec
= total
>= stub_group_size
;
8767 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
8769 while ((prev
= PREV_SEC (curr
)) != NULL
8770 && ((total
+= curr
->output_offset
- prev
->output_offset
)
8772 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8775 /* OK, the size from the start of CURR to the end is less
8776 than stub_group_size and thus can be handled by one stub
8777 section. (or the tail section is itself larger than
8778 stub_group_size, in which case we may be toast.) We
8779 should really be keeping track of the total size of stubs
8780 added here, as stubs contribute to the final output
8781 section size. That's a little tricky, and this way will
8782 only break if stubs added make the total size more than
8783 2^25, ie. for the default stub_group_size, if stubs total
8784 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8787 prev
= PREV_SEC (tail
);
8788 /* Set up this stub group. */
8789 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8791 while (tail
!= curr
&& (tail
= prev
) != NULL
);
8793 /* But wait, there's more! Input sections up to stub_group_size
8794 bytes before the stub section can be handled by it too.
8795 Don't do this if we have a really large section after the
8796 stubs, as adding more stubs increases the chance that
8797 branches may not reach into the stub section. */
8798 if (!stubs_always_before_branch
&& !big_sec
)
8802 && ((total
+= tail
->output_offset
- prev
->output_offset
)
8804 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8807 prev
= PREV_SEC (tail
);
8808 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8814 while (list
-- != htab
->input_list
);
8815 free (htab
->input_list
);
8819 /* Determine and set the size of the stub section for a final link.
8821 The basic idea here is to examine all the relocations looking for
8822 PC-relative calls to a target that is unreachable with a "bl"
8826 ppc64_elf_size_stubs (bfd
*output_bfd
,
8827 struct bfd_link_info
*info
,
8828 bfd_signed_vma group_size
,
8829 asection
*(*add_stub_section
) (const char *, asection
*),
8830 void (*layout_sections_again
) (void))
8832 bfd_size_type stub_group_size
;
8833 bfd_boolean stubs_always_before_branch
;
8834 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8836 /* Stash our params away. */
8837 htab
->add_stub_section
= add_stub_section
;
8838 htab
->layout_sections_again
= layout_sections_again
;
8839 stubs_always_before_branch
= group_size
< 0;
8841 stub_group_size
= -group_size
;
8843 stub_group_size
= group_size
;
8844 if (stub_group_size
== 1)
8846 /* Default values. */
8847 if (stubs_always_before_branch
)
8849 stub_group_size
= 0x1e00000;
8850 if (htab
->has_14bit_branch
)
8851 stub_group_size
= 0x7800;
8855 stub_group_size
= 0x1c00000;
8856 if (htab
->has_14bit_branch
)
8857 stub_group_size
= 0x7000;
8861 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
8866 unsigned int bfd_indx
;
8868 bfd_boolean stub_changed
;
8870 htab
->stub_iteration
+= 1;
8871 stub_changed
= FALSE
;
8873 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
8875 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
8877 Elf_Internal_Shdr
*symtab_hdr
;
8879 Elf_Internal_Sym
*local_syms
= NULL
;
8881 /* We'll need the symbol table in a second. */
8882 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
8883 if (symtab_hdr
->sh_info
== 0)
8886 /* Walk over each section attached to the input bfd. */
8887 for (section
= input_bfd
->sections
;
8889 section
= section
->next
)
8891 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
8893 /* If there aren't any relocs, then there's nothing more
8895 if ((section
->flags
& SEC_RELOC
) == 0
8896 || section
->reloc_count
== 0)
8899 /* If this section is a link-once section that will be
8900 discarded, then don't create any stubs. */
8901 if (section
->output_section
== NULL
8902 || section
->output_section
->owner
!= output_bfd
)
8905 /* Get the relocs. */
8907 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
8909 if (internal_relocs
== NULL
)
8910 goto error_ret_free_local
;
8912 /* Now examine each relocation. */
8913 irela
= internal_relocs
;
8914 irelaend
= irela
+ section
->reloc_count
;
8915 for (; irela
< irelaend
; irela
++)
8917 enum elf_ppc64_reloc_type r_type
;
8918 unsigned int r_indx
;
8919 enum ppc_stub_type stub_type
;
8920 struct ppc_stub_hash_entry
*stub_entry
;
8921 asection
*sym_sec
, *code_sec
;
8923 bfd_vma destination
;
8924 bfd_boolean ok_dest
;
8925 struct ppc_link_hash_entry
*hash
;
8926 struct ppc_link_hash_entry
*fdh
;
8927 struct elf_link_hash_entry
*h
;
8928 Elf_Internal_Sym
*sym
;
8930 const asection
*id_sec
;
8933 r_type
= ELF64_R_TYPE (irela
->r_info
);
8934 r_indx
= ELF64_R_SYM (irela
->r_info
);
8936 if (r_type
>= R_PPC64_max
)
8938 bfd_set_error (bfd_error_bad_value
);
8939 goto error_ret_free_internal
;
8942 /* Only look for stubs on branch instructions. */
8943 if (r_type
!= R_PPC64_REL24
8944 && r_type
!= R_PPC64_REL14
8945 && r_type
!= R_PPC64_REL14_BRTAKEN
8946 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8949 /* Now determine the call target, its name, value,
8951 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8953 goto error_ret_free_internal
;
8954 hash
= (struct ppc_link_hash_entry
*) h
;
8960 sym_value
= sym
->st_value
;
8966 /* Recognise an old ABI func code entry sym, and
8967 use the func descriptor sym instead. */
8968 if (hash
->elf
.root
.root
.string
[0] == '.'
8969 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
8971 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
8972 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8974 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
8975 sym_value
= fdh
->elf
.root
.u
.def
.value
;
8976 if (sym_sec
->output_section
!= NULL
)
8982 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
8983 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
8985 sym_value
= hash
->elf
.root
.u
.def
.value
;
8986 if (sym_sec
->output_section
!= NULL
)
8989 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
8991 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
8995 bfd_set_error (bfd_error_bad_value
);
8996 goto error_ret_free_internal
;
9003 sym_value
+= irela
->r_addend
;
9004 destination
= (sym_value
9005 + sym_sec
->output_offset
9006 + sym_sec
->output_section
->vma
);
9010 opd_adjust
= get_opd_info (sym_sec
);
9011 if (opd_adjust
!= NULL
)
9017 long adjust
= opd_adjust
[sym_value
/ 8];
9020 sym_value
+= adjust
;
9022 dest
= opd_entry_value (sym_sec
, sym_value
,
9023 &code_sec
, &sym_value
);
9024 if (dest
!= (bfd_vma
) -1)
9029 /* Fixup old ABI sym to point at code
9031 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
9032 hash
->elf
.root
.u
.def
.section
= code_sec
;
9033 hash
->elf
.root
.u
.def
.value
= sym_value
;
9038 /* Determine what (if any) linker stub is needed. */
9039 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
9042 if (stub_type
!= ppc_stub_plt_call
)
9044 /* Check whether we need a TOC adjusting stub.
9045 Since the linker pastes together pieces from
9046 different object files when creating the
9047 _init and _fini functions, it may be that a
9048 call to what looks like a local sym is in
9049 fact a call needing a TOC adjustment. */
9050 if (code_sec
!= NULL
9051 && code_sec
->output_section
!= NULL
9052 && (htab
->stub_group
[code_sec
->id
].toc_off
9053 != htab
->stub_group
[section
->id
].toc_off
)
9054 && (code_sec
->has_toc_reloc
9055 || code_sec
->makes_toc_func_call
))
9056 stub_type
= ppc_stub_long_branch_r2off
;
9059 if (stub_type
== ppc_stub_none
)
9062 /* __tls_get_addr calls might be eliminated. */
9063 if (stub_type
!= ppc_stub_plt_call
9065 && (hash
== htab
->tls_get_addr
9066 || hash
== htab
->tls_get_addr_fd
)
9067 && section
->has_tls_reloc
9068 && irela
!= internal_relocs
)
9073 if (!get_tls_mask (&tls_mask
, NULL
, &local_syms
,
9074 irela
- 1, input_bfd
))
9075 goto error_ret_free_internal
;
9080 /* Support for grouping stub sections. */
9081 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
9083 /* Get the name of this stub. */
9084 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
9086 goto error_ret_free_internal
;
9088 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
9089 stub_name
, FALSE
, FALSE
);
9090 if (stub_entry
!= NULL
)
9092 /* The proper stub has already been created. */
9097 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
9098 if (stub_entry
== NULL
)
9101 error_ret_free_internal
:
9102 if (elf_section_data (section
)->relocs
== NULL
)
9103 free (internal_relocs
);
9104 error_ret_free_local
:
9105 if (local_syms
!= NULL
9106 && (symtab_hdr
->contents
9107 != (unsigned char *) local_syms
))
9112 stub_entry
->stub_type
= stub_type
;
9113 stub_entry
->target_value
= sym_value
;
9114 stub_entry
->target_section
= code_sec
;
9115 stub_entry
->h
= hash
;
9116 stub_entry
->addend
= irela
->r_addend
;
9118 if (stub_entry
->h
!= NULL
)
9119 htab
->stub_globals
+= 1;
9121 stub_changed
= TRUE
;
9124 /* We're done with the internal relocs, free them. */
9125 if (elf_section_data (section
)->relocs
!= internal_relocs
)
9126 free (internal_relocs
);
9129 if (local_syms
!= NULL
9130 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9132 if (!info
->keep_memory
)
9135 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9142 /* OK, we've added some stubs. Find out the new size of the
9144 for (stub_sec
= htab
->stub_bfd
->sections
;
9146 stub_sec
= stub_sec
->next
)
9147 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9150 stub_sec
->reloc_count
= 0;
9153 htab
->brlt
->size
= 0;
9154 if (htab
->relbrlt
!= NULL
)
9155 htab
->relbrlt
->size
= 0;
9157 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
9159 /* Ask the linker to do its stuff. */
9160 (*htab
->layout_sections_again
) ();
9163 /* It would be nice to strip .branch_lt from the output if the
9164 section is empty, but it's too late. If we strip sections here,
9165 the dynamic symbol table is corrupted since the section symbol
9166 for the stripped section isn't written. */
9171 /* Called after we have determined section placement. If sections
9172 move, we'll be called again. Provide a value for TOCstart. */
9175 ppc64_elf_toc (bfd
*obfd
)
9180 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9181 order. The TOC starts where the first of these sections starts. */
9182 s
= bfd_get_section_by_name (obfd
, ".got");
9184 s
= bfd_get_section_by_name (obfd
, ".toc");
9186 s
= bfd_get_section_by_name (obfd
, ".tocbss");
9188 s
= bfd_get_section_by_name (obfd
, ".plt");
9191 /* This may happen for
9192 o references to TOC base (SYM@toc / TOC[tc0]) without a
9195 o --gc-sections and empty TOC sections
9197 FIXME: Warn user? */
9199 /* Look for a likely section. We probably won't even be
9201 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9202 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
9203 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9206 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9207 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
9208 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9211 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9212 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
9215 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9216 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
9222 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
9227 /* Build all the stubs associated with the current output file.
9228 The stubs are kept in a hash table attached to the main linker
9229 hash table. This function is called via gldelf64ppc_finish. */
9232 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
9233 struct bfd_link_info
*info
,
9236 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9239 int stub_sec_count
= 0;
9241 htab
->emit_stub_syms
= emit_stub_syms
;
9243 /* Allocate memory to hold the linker stubs. */
9244 for (stub_sec
= htab
->stub_bfd
->sections
;
9246 stub_sec
= stub_sec
->next
)
9247 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9248 && stub_sec
->size
!= 0)
9250 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
9251 if (stub_sec
->contents
== NULL
)
9253 /* We want to check that built size is the same as calculated
9254 size. rawsize is a convenient location to use. */
9255 stub_sec
->rawsize
= stub_sec
->size
;
9259 if (htab
->plt
!= NULL
)
9264 /* Build the .glink plt call stub. */
9265 plt0
= (htab
->plt
->output_section
->vma
9266 + htab
->plt
->output_offset
9267 - (htab
->glink
->output_section
->vma
9268 + htab
->glink
->output_offset
9269 + GLINK_CALL_STUB_SIZE
));
9270 if (plt0
+ 0x80008000 > 0xffffffff)
9272 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
9273 bfd_set_error (bfd_error_bad_value
);
9277 if (htab
->emit_stub_syms
)
9279 struct elf_link_hash_entry
*h
;
9280 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
9283 if (h
->root
.type
== bfd_link_hash_new
)
9285 h
->root
.type
= bfd_link_hash_defined
;
9286 h
->root
.u
.def
.section
= htab
->glink
;
9287 h
->root
.u
.def
.value
= 0;
9290 h
->ref_regular_nonweak
= 1;
9291 h
->forced_local
= 1;
9295 p
= htab
->glink
->contents
;
9296 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
9298 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
9300 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
9302 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9304 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
9306 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
9308 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
9310 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9312 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
9314 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
9316 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
9318 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
9320 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
9322 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
9324 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
9326 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
9329 /* Build the .glink lazy link call stubs. */
9331 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
9335 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
9340 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
9342 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
9345 bfd_put_32 (htab
->glink
->owner
,
9346 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
9350 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
9353 if (htab
->brlt
->size
!= 0)
9355 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
9357 if (htab
->brlt
->contents
== NULL
)
9360 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
9362 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
9363 htab
->relbrlt
->size
);
9364 if (htab
->relbrlt
->contents
== NULL
)
9368 /* Build the stubs as directed by the stub hash table. */
9369 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
9371 for (stub_sec
= htab
->stub_bfd
->sections
;
9373 stub_sec
= stub_sec
->next
)
9374 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9376 stub_sec_count
+= 1;
9377 if (stub_sec
->rawsize
!= stub_sec
->size
)
9381 if (stub_sec
!= NULL
9382 || htab
->glink
->rawsize
!= htab
->glink
->size
)
9384 htab
->stub_error
= TRUE
;
9385 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
9388 if (htab
->stub_error
)
9393 *stats
= bfd_malloc (500);
9397 sprintf (*stats
, _("linker stubs in %u group%s\n"
9400 " long branch %lu\n"
9401 " long toc adj %lu\n"
9404 stub_sec_count
== 1 ? "" : "s",
9405 htab
->stub_count
[ppc_stub_long_branch
- 1],
9406 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
9407 htab
->stub_count
[ppc_stub_plt_branch
- 1],
9408 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
9409 htab
->stub_count
[ppc_stub_plt_call
- 1]);
9414 /* This function undoes the changes made by add_symbol_adjust. */
9417 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
9419 struct ppc_link_hash_entry
*eh
;
9421 if (h
->root
.type
== bfd_link_hash_indirect
)
9424 if (h
->root
.type
== bfd_link_hash_warning
)
9425 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9427 eh
= (struct ppc_link_hash_entry
*) h
;
9428 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
9431 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
9436 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
9438 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9439 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
9442 /* The RELOCATE_SECTION function is called by the ELF backend linker
9443 to handle the relocations for a section.
9445 The relocs are always passed as Rela structures; if the section
9446 actually uses Rel structures, the r_addend field will always be
9449 This function is responsible for adjust the section contents as
9450 necessary, and (if using Rela relocs and generating a
9451 relocatable output file) adjusting the reloc addend as
9454 This function does not have to worry about setting the reloc
9455 address or the reloc symbol index.
9457 LOCAL_SYMS is a pointer to the swapped in local symbols.
9459 LOCAL_SECTIONS is an array giving the section in the input file
9460 corresponding to the st_shndx field of each local symbol.
9462 The global hash table entry for the global symbols can be found
9463 via elf_sym_hashes (input_bfd).
9465 When generating relocatable output, this function must handle
9466 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9467 going to be the section symbol corresponding to the output
9468 section, which means that the addend must be adjusted
9472 ppc64_elf_relocate_section (bfd
*output_bfd
,
9473 struct bfd_link_info
*info
,
9475 asection
*input_section
,
9477 Elf_Internal_Rela
*relocs
,
9478 Elf_Internal_Sym
*local_syms
,
9479 asection
**local_sections
)
9481 struct ppc_link_hash_table
*htab
;
9482 Elf_Internal_Shdr
*symtab_hdr
;
9483 struct elf_link_hash_entry
**sym_hashes
;
9484 Elf_Internal_Rela
*rel
;
9485 Elf_Internal_Rela
*relend
;
9486 Elf_Internal_Rela outrel
;
9488 struct got_entry
**local_got_ents
;
9490 bfd_boolean ret
= TRUE
;
9492 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9493 bfd_boolean is_power4
= FALSE
;
9495 if (info
->relocatable
)
9498 /* Initialize howto table if needed. */
9499 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9502 htab
= ppc_hash_table (info
);
9504 /* Don't relocate stub sections. */
9505 if (input_section
->owner
== htab
->stub_bfd
)
9508 local_got_ents
= elf_local_got_ents (input_bfd
);
9509 TOCstart
= elf_gp (output_bfd
);
9510 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
9511 sym_hashes
= elf_sym_hashes (input_bfd
);
9512 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
9515 relend
= relocs
+ input_section
->reloc_count
;
9516 for (; rel
< relend
; rel
++)
9518 enum elf_ppc64_reloc_type r_type
;
9520 bfd_reloc_status_type r
;
9521 Elf_Internal_Sym
*sym
;
9523 struct elf_link_hash_entry
*h_elf
;
9524 struct ppc_link_hash_entry
*h
;
9525 struct ppc_link_hash_entry
*fdh
;
9526 const char *sym_name
;
9527 unsigned long r_symndx
, toc_symndx
;
9528 char tls_mask
, tls_gd
, tls_type
;
9531 bfd_boolean unresolved_reloc
;
9533 unsigned long insn
, mask
;
9534 struct ppc_stub_hash_entry
*stub_entry
;
9535 bfd_vma max_br_offset
;
9538 r_type
= ELF64_R_TYPE (rel
->r_info
);
9539 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9541 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9542 symbol of the previous ADDR64 reloc. The symbol gives us the
9543 proper TOC base to use. */
9544 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
9546 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
9548 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
9554 unresolved_reloc
= FALSE
;
9557 if (r_symndx
< symtab_hdr
->sh_info
)
9559 /* It's a local symbol. */
9562 sym
= local_syms
+ r_symndx
;
9563 sec
= local_sections
[r_symndx
];
9564 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
9565 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
9566 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
9567 opd_adjust
= get_opd_info (sec
);
9568 if (opd_adjust
!= NULL
)
9570 long adjust
= opd_adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
9574 relocation
+= adjust
;
9579 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
9580 r_symndx
, symtab_hdr
, sym_hashes
,
9581 h_elf
, sec
, relocation
,
9582 unresolved_reloc
, warned
);
9583 sym_name
= h_elf
->root
.root
.string
;
9584 sym_type
= h_elf
->type
;
9586 h
= (struct ppc_link_hash_entry
*) h_elf
;
9588 /* TLS optimizations. Replace instruction sequences and relocs
9589 based on information we collected in tls_optimize. We edit
9590 RELOCS so that --emit-relocs will output something sensible
9591 for the final instruction stream. */
9595 if (IS_PPC64_TLS_RELOC (r_type
))
9598 tls_mask
= h
->tls_mask
;
9599 else if (local_got_ents
!= NULL
)
9602 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
9603 tls_mask
= lgot_masks
[r_symndx
];
9605 if (tls_mask
== 0 && r_type
== R_PPC64_TLS
)
9607 /* Check for toc tls entries. */
9610 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9615 tls_mask
= *toc_tls
;
9619 /* Check that tls relocs are used with tls syms, and non-tls
9620 relocs are used with non-tls syms. */
9622 && r_type
!= R_PPC64_NONE
9624 || h
->elf
.root
.type
== bfd_link_hash_defined
9625 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
9626 && IS_PPC64_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
9628 if (r_type
== R_PPC64_TLS
&& tls_mask
!= 0)
9629 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9632 (*_bfd_error_handler
)
9633 (sym_type
== STT_TLS
9634 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9635 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9638 (long) rel
->r_offset
,
9639 ppc64_elf_howto_table
[r_type
]->name
,
9643 /* Ensure reloc mapping code below stays sane. */
9644 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
9645 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
9646 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
9647 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
9648 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
9649 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
9650 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
9651 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
9652 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
9653 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
9662 case R_PPC64_TOC16_LO
:
9663 case R_PPC64_TOC16_DS
:
9664 case R_PPC64_TOC16_LO_DS
:
9666 /* Check for toc tls entries. */
9670 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9677 tls_mask
= *toc_tls
;
9678 if (r_type
== R_PPC64_TOC16_DS
9679 || r_type
== R_PPC64_TOC16_LO_DS
)
9682 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
9687 /* If we found a GD reloc pair, then we might be
9688 doing a GD->IE transition. */
9691 tls_gd
= TLS_TPRELGD
;
9692 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9693 goto tls_get_addr_check
;
9695 else if (retval
== 3)
9697 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9698 goto tls_get_addr_check
;
9705 case R_PPC64_GOT_TPREL16_DS
:
9706 case R_PPC64_GOT_TPREL16_LO_DS
:
9708 && (tls_mask
& TLS_TPREL
) == 0)
9711 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
9713 insn
|= 0x3c0d0000; /* addis 0,13,0 */
9714 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
9715 r_type
= R_PPC64_TPREL16_HA
;
9716 if (toc_symndx
!= 0)
9718 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9719 /* We changed the symbol. Start over in order to
9720 get h, sym, sec etc. right. */
9725 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9731 && (tls_mask
& TLS_TPREL
) == 0)
9734 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
9735 if ((insn
& ((0x3f << 26) | (31 << 11)))
9736 == ((31 << 26) | (13 << 11)))
9737 rtra
= insn
& ((1 << 26) - (1 << 16));
9738 else if ((insn
& ((0x3f << 26) | (31 << 16)))
9739 == ((31 << 26) | (13 << 16)))
9740 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
9743 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
9746 else if ((insn
& (31 << 1)) == 23 << 1
9747 && ((insn
& (31 << 6)) < 14 << 6
9748 || ((insn
& (31 << 6)) >= 16 << 6
9749 && (insn
& (31 << 6)) < 24 << 6)))
9750 /* load and store indexed -> dform. */
9751 insn
= (32 | ((insn
>> 6) & 31)) << 26;
9752 else if ((insn
& (31 << 1)) == 21 << 1
9753 && (insn
& (0x1a << 6)) == 0)
9754 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9755 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
9756 | ((insn
>> 6) & 1));
9757 else if ((insn
& (31 << 1)) == 21 << 1
9758 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
9760 insn
= (58 << 26) | 2;
9764 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9765 /* Was PPC64_TLS which sits on insn boundary, now
9766 PPC64_TPREL16_LO which is at insn+2. */
9768 r_type
= R_PPC64_TPREL16_LO
;
9769 if (toc_symndx
!= 0)
9771 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9772 /* We changed the symbol. Start over in order to
9773 get h, sym, sec etc. right. */
9778 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9782 case R_PPC64_GOT_TLSGD16_HI
:
9783 case R_PPC64_GOT_TLSGD16_HA
:
9784 tls_gd
= TLS_TPRELGD
;
9785 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9789 case R_PPC64_GOT_TLSLD16_HI
:
9790 case R_PPC64_GOT_TLSLD16_HA
:
9791 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9794 if ((tls_mask
& tls_gd
) != 0)
9795 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
9796 + R_PPC64_GOT_TPREL16_DS
);
9799 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
9801 r_type
= R_PPC64_NONE
;
9803 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9807 case R_PPC64_GOT_TLSGD16
:
9808 case R_PPC64_GOT_TLSGD16_LO
:
9809 tls_gd
= TLS_TPRELGD
;
9810 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9811 goto tls_get_addr_check
;
9814 case R_PPC64_GOT_TLSLD16
:
9815 case R_PPC64_GOT_TLSLD16_LO
:
9816 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9819 if (rel
+ 1 < relend
)
9821 enum elf_ppc64_reloc_type r_type2
;
9822 unsigned long r_symndx2
;
9823 struct elf_link_hash_entry
*h2
;
9824 bfd_vma insn1
, insn2
, insn3
;
9827 /* The next instruction should be a call to
9828 __tls_get_addr. Peek at the reloc to be sure. */
9829 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
9830 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
9831 if (r_symndx2
< symtab_hdr
->sh_info
9832 || (r_type2
!= R_PPC64_REL14
9833 && r_type2
!= R_PPC64_REL14_BRTAKEN
9834 && r_type2
!= R_PPC64_REL14_BRNTAKEN
9835 && r_type2
!= R_PPC64_REL24
))
9838 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
9839 while (h2
->root
.type
== bfd_link_hash_indirect
9840 || h2
->root
.type
== bfd_link_hash_warning
)
9841 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
9842 if (h2
== NULL
|| (h2
!= &htab
->tls_get_addr
->elf
9843 && h2
!= &htab
->tls_get_addr_fd
->elf
))
9846 /* OK, it checks out. Replace the call. */
9847 offset
= rel
[1].r_offset
;
9848 insn1
= bfd_get_32 (output_bfd
,
9849 contents
+ rel
->r_offset
- 2);
9850 insn3
= bfd_get_32 (output_bfd
,
9851 contents
+ offset
+ 4);
9852 if ((tls_mask
& tls_gd
) != 0)
9855 insn1
&= (1 << 26) - (1 << 2);
9856 insn1
|= 58 << 26; /* ld */
9857 insn2
= 0x7c636a14; /* add 3,3,13 */
9858 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
9859 if ((tls_mask
& TLS_EXPLICIT
) == 0)
9860 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
9861 + R_PPC64_GOT_TPREL16_DS
);
9863 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
9864 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9869 insn1
= 0x3c6d0000; /* addis 3,13,0 */
9870 insn2
= 0x38630000; /* addi 3,3,0 */
9873 /* Was an LD reloc. */
9875 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9876 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9878 else if (toc_symndx
!= 0)
9879 r_symndx
= toc_symndx
;
9880 r_type
= R_PPC64_TPREL16_HA
;
9881 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9882 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
9883 R_PPC64_TPREL16_LO
);
9884 rel
[1].r_offset
+= 2;
9887 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
9891 rel
[1].r_offset
+= 4;
9893 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
9894 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
9895 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
9896 if (tls_gd
== 0 || toc_symndx
!= 0)
9898 /* We changed the symbol. Start over in order
9899 to get h, sym, sec etc. right. */
9907 case R_PPC64_DTPMOD64
:
9908 if (rel
+ 1 < relend
9909 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
9910 && rel
[1].r_offset
== rel
->r_offset
+ 8)
9912 if ((tls_mask
& TLS_GD
) == 0)
9914 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
9915 if ((tls_mask
& TLS_TPRELGD
) != 0)
9916 r_type
= R_PPC64_TPREL64
;
9919 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9920 r_type
= R_PPC64_NONE
;
9922 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9927 if ((tls_mask
& TLS_LD
) == 0)
9929 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9930 r_type
= R_PPC64_NONE
;
9931 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9936 case R_PPC64_TPREL64
:
9937 if ((tls_mask
& TLS_TPREL
) == 0)
9939 r_type
= R_PPC64_NONE
;
9940 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9945 /* Handle other relocations that tweak non-addend part of insn. */
9947 max_br_offset
= 1 << 25;
9948 addend
= rel
->r_addend
;
9954 /* Branch taken prediction relocations. */
9955 case R_PPC64_ADDR14_BRTAKEN
:
9956 case R_PPC64_REL14_BRTAKEN
:
9957 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9960 /* Branch not taken prediction relocations. */
9961 case R_PPC64_ADDR14_BRNTAKEN
:
9962 case R_PPC64_REL14_BRNTAKEN
:
9963 insn
|= bfd_get_32 (output_bfd
,
9964 contents
+ rel
->r_offset
) & ~(0x01 << 21);
9968 max_br_offset
= 1 << 15;
9972 /* Calls to functions with a different TOC, such as calls to
9973 shared objects, need to alter the TOC pointer. This is
9974 done using a linkage stub. A REL24 branching to these
9975 linkage stubs needs to be followed by a nop, as the nop
9976 will be replaced with an instruction to restore the TOC
9981 && (((fdh
= h
->oh
) != NULL
9982 && fdh
->elf
.plt
.plist
!= NULL
)
9983 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
9985 && sec
->output_section
!= NULL
9986 && sec
->id
<= htab
->top_id
9987 && (htab
->stub_group
[sec
->id
].toc_off
9988 != htab
->stub_group
[input_section
->id
].toc_off
)))
9989 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
9991 && (stub_entry
->stub_type
== ppc_stub_plt_call
9992 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
9993 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
9995 bfd_boolean can_plt_call
= FALSE
;
9997 if (rel
->r_offset
+ 8 <= input_section
->size
)
10000 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
10002 || nop
== CROR_151515
|| nop
== CROR_313131
)
10004 bfd_put_32 (input_bfd
, LD_R2_40R1
,
10005 contents
+ rel
->r_offset
+ 4);
10006 can_plt_call
= TRUE
;
10012 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
10014 /* If this is a plain branch rather than a branch
10015 and link, don't require a nop. */
10017 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
10019 can_plt_call
= TRUE
;
10022 && strcmp (h
->elf
.root
.root
.string
,
10023 ".__libc_start_main") == 0)
10025 /* Allow crt1 branch to go via a toc adjusting stub. */
10026 can_plt_call
= TRUE
;
10030 if (strcmp (input_section
->output_section
->name
,
10032 || strcmp (input_section
->output_section
->name
,
10034 (*_bfd_error_handler
)
10035 (_("%B(%A+0x%lx): automatic multiple TOCs "
10036 "not supported using your crt files; "
10037 "recompile with -mminimal-toc or upgrade gcc"),
10040 (long) rel
->r_offset
);
10042 (*_bfd_error_handler
)
10043 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10044 "does not allow automatic multiple TOCs; "
10045 "recompile with -mminimal-toc or "
10046 "-fno-optimize-sibling-calls, "
10047 "or make `%s' extern"),
10050 (long) rel
->r_offset
,
10053 bfd_set_error (bfd_error_bad_value
);
10059 && stub_entry
->stub_type
== ppc_stub_plt_call
)
10060 unresolved_reloc
= FALSE
;
10063 if (stub_entry
== NULL
10064 && get_opd_info (sec
) != NULL
)
10066 /* The branch destination is the value of the opd entry. */
10067 bfd_vma off
= (relocation
- sec
->output_section
->vma
10068 - sec
->output_offset
+ rel
->r_addend
);
10069 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
10070 if (dest
!= (bfd_vma
) -1)
10077 /* If the branch is out of reach we ought to have a long
10079 from
= (rel
->r_offset
10080 + input_section
->output_offset
10081 + input_section
->output_section
->vma
);
10083 if (stub_entry
== NULL
10084 && (relocation
+ rel
->r_addend
- from
+ max_br_offset
10085 >= 2 * max_br_offset
)
10086 && r_type
!= R_PPC64_ADDR14_BRTAKEN
10087 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
10088 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
10091 if (stub_entry
!= NULL
)
10093 /* Munge up the value and addend so that we call the stub
10094 rather than the procedure directly. */
10095 relocation
= (stub_entry
->stub_offset
10096 + stub_entry
->stub_sec
->output_offset
10097 + stub_entry
->stub_sec
->output_section
->vma
);
10105 /* Set 'a' bit. This is 0b00010 in BO field for branch
10106 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10107 for branch on CTR insns (BO == 1a00t or 1a01t). */
10108 if ((insn
& (0x14 << 21)) == (0x04 << 21))
10109 insn
|= 0x02 << 21;
10110 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
10111 insn
|= 0x08 << 21;
10117 /* Invert 'y' bit if not the default. */
10118 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
10119 insn
^= 0x01 << 21;
10122 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
10125 /* NOP out calls to undefined weak functions.
10126 We can thus call a weak function without first
10127 checking whether the function is defined. */
10129 && h
->elf
.root
.type
== bfd_link_hash_undefweak
10130 && r_type
== R_PPC64_REL24
10132 && rel
->r_addend
== 0)
10134 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
10140 /* Set `addend'. */
10145 (*_bfd_error_handler
)
10146 (_("%B: unknown relocation type %d for symbol %s"),
10147 input_bfd
, (int) r_type
, sym_name
);
10149 bfd_set_error (bfd_error_bad_value
);
10155 case R_PPC64_GNU_VTINHERIT
:
10156 case R_PPC64_GNU_VTENTRY
:
10159 /* GOT16 relocations. Like an ADDR16 using the symbol's
10160 address in the GOT as relocation value instead of the
10161 symbol's value itself. Also, create a GOT entry for the
10162 symbol and put the symbol value there. */
10163 case R_PPC64_GOT_TLSGD16
:
10164 case R_PPC64_GOT_TLSGD16_LO
:
10165 case R_PPC64_GOT_TLSGD16_HI
:
10166 case R_PPC64_GOT_TLSGD16_HA
:
10167 tls_type
= TLS_TLS
| TLS_GD
;
10170 case R_PPC64_GOT_TLSLD16
:
10171 case R_PPC64_GOT_TLSLD16_LO
:
10172 case R_PPC64_GOT_TLSLD16_HI
:
10173 case R_PPC64_GOT_TLSLD16_HA
:
10174 tls_type
= TLS_TLS
| TLS_LD
;
10177 case R_PPC64_GOT_TPREL16_DS
:
10178 case R_PPC64_GOT_TPREL16_LO_DS
:
10179 case R_PPC64_GOT_TPREL16_HI
:
10180 case R_PPC64_GOT_TPREL16_HA
:
10181 tls_type
= TLS_TLS
| TLS_TPREL
;
10184 case R_PPC64_GOT_DTPREL16_DS
:
10185 case R_PPC64_GOT_DTPREL16_LO_DS
:
10186 case R_PPC64_GOT_DTPREL16_HI
:
10187 case R_PPC64_GOT_DTPREL16_HA
:
10188 tls_type
= TLS_TLS
| TLS_DTPREL
;
10191 case R_PPC64_GOT16
:
10192 case R_PPC64_GOT16_LO
:
10193 case R_PPC64_GOT16_HI
:
10194 case R_PPC64_GOT16_HA
:
10195 case R_PPC64_GOT16_DS
:
10196 case R_PPC64_GOT16_LO_DS
:
10199 /* Relocation is to the entry for this symbol in the global
10204 unsigned long indx
= 0;
10206 if (tls_type
== (TLS_TLS
| TLS_LD
)
10208 || !h
->elf
.def_dynamic
))
10209 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
10212 struct got_entry
*ent
;
10216 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
10217 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
10220 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
10221 /* This is actually a static link, or it is a
10222 -Bsymbolic link and the symbol is defined
10223 locally, or the symbol was forced to be local
10224 because of a version file. */
10228 indx
= h
->elf
.dynindx
;
10229 unresolved_reloc
= FALSE
;
10231 ent
= h
->elf
.got
.glist
;
10235 if (local_got_ents
== NULL
)
10237 ent
= local_got_ents
[r_symndx
];
10240 for (; ent
!= NULL
; ent
= ent
->next
)
10241 if (ent
->addend
== rel
->r_addend
10242 && ent
->owner
== input_bfd
10243 && ent
->tls_type
== tls_type
)
10247 offp
= &ent
->got
.offset
;
10250 got
= ppc64_elf_tdata (input_bfd
)->got
;
10254 /* The offset must always be a multiple of 8. We use the
10255 least significant bit to record whether we have already
10256 processed this entry. */
10258 if ((off
& 1) != 0)
10262 /* Generate relocs for the dynamic linker, except in
10263 the case of TLSLD where we'll use one entry per
10265 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
10268 if ((info
->shared
|| indx
!= 0)
10270 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10271 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
10273 outrel
.r_offset
= (got
->output_section
->vma
10274 + got
->output_offset
10276 outrel
.r_addend
= rel
->r_addend
;
10277 if (tls_type
& (TLS_LD
| TLS_GD
))
10279 outrel
.r_addend
= 0;
10280 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
10281 if (tls_type
== (TLS_TLS
| TLS_GD
))
10283 loc
= relgot
->contents
;
10284 loc
+= (relgot
->reloc_count
++
10285 * sizeof (Elf64_External_Rela
));
10286 bfd_elf64_swap_reloca_out (output_bfd
,
10288 outrel
.r_offset
+= 8;
10289 outrel
.r_addend
= rel
->r_addend
;
10291 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10294 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
10295 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10296 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10297 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
10298 else if (indx
== 0)
10300 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
10302 /* Write the .got section contents for the sake
10304 loc
= got
->contents
+ off
;
10305 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
10309 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
10311 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
10313 outrel
.r_addend
+= relocation
;
10314 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
10315 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
10317 loc
= relgot
->contents
;
10318 loc
+= (relgot
->reloc_count
++
10319 * sizeof (Elf64_External_Rela
));
10320 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10323 /* Init the .got section contents here if we're not
10324 emitting a reloc. */
10327 relocation
+= rel
->r_addend
;
10328 if (tls_type
== (TLS_TLS
| TLS_LD
))
10330 else if (tls_type
!= 0)
10332 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10333 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10334 relocation
+= DTP_OFFSET
- TP_OFFSET
;
10336 if (tls_type
== (TLS_TLS
| TLS_GD
))
10338 bfd_put_64 (output_bfd
, relocation
,
10339 got
->contents
+ off
+ 8);
10344 bfd_put_64 (output_bfd
, relocation
,
10345 got
->contents
+ off
);
10349 if (off
>= (bfd_vma
) -2)
10352 relocation
= got
->output_offset
+ off
;
10354 /* TOC base (r2) is TOC start plus 0x8000. */
10355 addend
= -TOC_BASE_OFF
;
10359 case R_PPC64_PLT16_HA
:
10360 case R_PPC64_PLT16_HI
:
10361 case R_PPC64_PLT16_LO
:
10362 case R_PPC64_PLT32
:
10363 case R_PPC64_PLT64
:
10364 /* Relocation is to the entry for this symbol in the
10365 procedure linkage table. */
10367 /* Resolve a PLT reloc against a local symbol directly,
10368 without using the procedure linkage table. */
10372 /* It's possible that we didn't make a PLT entry for this
10373 symbol. This happens when statically linking PIC code,
10374 or when using -Bsymbolic. Go find a match if there is a
10376 if (htab
->plt
!= NULL
)
10378 struct plt_entry
*ent
;
10379 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10380 if (ent
->addend
== rel
->r_addend
10381 && ent
->plt
.offset
!= (bfd_vma
) -1)
10383 relocation
= (htab
->plt
->output_section
->vma
10384 + htab
->plt
->output_offset
10385 + ent
->plt
.offset
);
10386 unresolved_reloc
= FALSE
;
10392 /* Relocation value is TOC base. */
10393 relocation
= TOCstart
;
10395 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
10396 else if (unresolved_reloc
)
10398 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
10399 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
10401 unresolved_reloc
= TRUE
;
10404 /* TOC16 relocs. We want the offset relative to the TOC base,
10405 which is the address of the start of the TOC plus 0x8000.
10406 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10408 case R_PPC64_TOC16
:
10409 case R_PPC64_TOC16_LO
:
10410 case R_PPC64_TOC16_HI
:
10411 case R_PPC64_TOC16_DS
:
10412 case R_PPC64_TOC16_LO_DS
:
10413 case R_PPC64_TOC16_HA
:
10414 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
10417 /* Relocate against the beginning of the section. */
10418 case R_PPC64_SECTOFF
:
10419 case R_PPC64_SECTOFF_LO
:
10420 case R_PPC64_SECTOFF_HI
:
10421 case R_PPC64_SECTOFF_DS
:
10422 case R_PPC64_SECTOFF_LO_DS
:
10423 case R_PPC64_SECTOFF_HA
:
10425 addend
-= sec
->output_section
->vma
;
10428 case R_PPC64_REL14
:
10429 case R_PPC64_REL14_BRNTAKEN
:
10430 case R_PPC64_REL14_BRTAKEN
:
10431 case R_PPC64_REL24
:
10434 case R_PPC64_TPREL16
:
10435 case R_PPC64_TPREL16_LO
:
10436 case R_PPC64_TPREL16_HI
:
10437 case R_PPC64_TPREL16_HA
:
10438 case R_PPC64_TPREL16_DS
:
10439 case R_PPC64_TPREL16_LO_DS
:
10440 case R_PPC64_TPREL16_HIGHER
:
10441 case R_PPC64_TPREL16_HIGHERA
:
10442 case R_PPC64_TPREL16_HIGHEST
:
10443 case R_PPC64_TPREL16_HIGHESTA
:
10444 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10446 /* The TPREL16 relocs shouldn't really be used in shared
10447 libs as they will result in DT_TEXTREL being set, but
10448 support them anyway. */
10452 case R_PPC64_DTPREL16
:
10453 case R_PPC64_DTPREL16_LO
:
10454 case R_PPC64_DTPREL16_HI
:
10455 case R_PPC64_DTPREL16_HA
:
10456 case R_PPC64_DTPREL16_DS
:
10457 case R_PPC64_DTPREL16_LO_DS
:
10458 case R_PPC64_DTPREL16_HIGHER
:
10459 case R_PPC64_DTPREL16_HIGHERA
:
10460 case R_PPC64_DTPREL16_HIGHEST
:
10461 case R_PPC64_DTPREL16_HIGHESTA
:
10462 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10465 case R_PPC64_DTPMOD64
:
10470 case R_PPC64_TPREL64
:
10471 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10474 case R_PPC64_DTPREL64
:
10475 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10478 /* Relocations that may need to be propagated if this is a
10480 case R_PPC64_REL30
:
10481 case R_PPC64_REL32
:
10482 case R_PPC64_REL64
:
10483 case R_PPC64_ADDR14
:
10484 case R_PPC64_ADDR14_BRNTAKEN
:
10485 case R_PPC64_ADDR14_BRTAKEN
:
10486 case R_PPC64_ADDR16
:
10487 case R_PPC64_ADDR16_DS
:
10488 case R_PPC64_ADDR16_HA
:
10489 case R_PPC64_ADDR16_HI
:
10490 case R_PPC64_ADDR16_HIGHER
:
10491 case R_PPC64_ADDR16_HIGHERA
:
10492 case R_PPC64_ADDR16_HIGHEST
:
10493 case R_PPC64_ADDR16_HIGHESTA
:
10494 case R_PPC64_ADDR16_LO
:
10495 case R_PPC64_ADDR16_LO_DS
:
10496 case R_PPC64_ADDR24
:
10497 case R_PPC64_ADDR32
:
10498 case R_PPC64_ADDR64
:
10499 case R_PPC64_UADDR16
:
10500 case R_PPC64_UADDR32
:
10501 case R_PPC64_UADDR64
:
10502 /* r_symndx will be zero only for relocs against symbols
10503 from removed linkonce sections, or sections discarded by
10504 a linker script. */
10511 if ((input_section
->flags
& SEC_ALLOC
) == 0)
10514 if (NO_OPD_RELOCS
&& is_opd
)
10519 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10520 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
10521 && (MUST_BE_DYN_RELOC (r_type
)
10522 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
10523 || (ELIMINATE_COPY_RELOCS
10526 && h
->elf
.dynindx
!= -1
10527 && !h
->elf
.non_got_ref
10528 && h
->elf
.def_dynamic
10529 && !h
->elf
.def_regular
))
10531 Elf_Internal_Rela outrel
;
10532 bfd_boolean skip
, relocate
;
10537 /* When generating a dynamic object, these relocations
10538 are copied into the output file to be resolved at run
10544 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
10545 input_section
, rel
->r_offset
);
10546 if (out_off
== (bfd_vma
) -1)
10548 else if (out_off
== (bfd_vma
) -2)
10549 skip
= TRUE
, relocate
= TRUE
;
10550 out_off
+= (input_section
->output_section
->vma
10551 + input_section
->output_offset
);
10552 outrel
.r_offset
= out_off
;
10553 outrel
.r_addend
= rel
->r_addend
;
10555 /* Optimize unaligned reloc use. */
10556 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
10557 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
10558 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
10559 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
10560 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
10561 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
10562 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
10563 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
10564 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
10567 memset (&outrel
, 0, sizeof outrel
);
10568 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
10570 && r_type
!= R_PPC64_TOC
)
10571 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
10574 /* This symbol is local, or marked to become local,
10575 or this is an opd section reloc which must point
10576 at a local function. */
10577 outrel
.r_addend
+= relocation
;
10578 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
10580 if (is_opd
&& h
!= NULL
)
10582 /* Lie about opd entries. This case occurs
10583 when building shared libraries and we
10584 reference a function in another shared
10585 lib. The same thing happens for a weak
10586 definition in an application that's
10587 overridden by a strong definition in a
10588 shared lib. (I believe this is a generic
10589 bug in binutils handling of weak syms.)
10590 In these cases we won't use the opd
10591 entry in this lib. */
10592 unresolved_reloc
= FALSE
;
10594 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10596 /* We need to relocate .opd contents for ld.so.
10597 Prelink also wants simple and consistent rules
10598 for relocs. This make all RELATIVE relocs have
10599 *r_offset equal to r_addend. */
10606 if (bfd_is_abs_section (sec
))
10608 else if (sec
== NULL
|| sec
->owner
== NULL
)
10610 bfd_set_error (bfd_error_bad_value
);
10617 osec
= sec
->output_section
;
10618 indx
= elf_section_data (osec
)->dynindx
;
10620 /* We are turning this relocation into one
10621 against a section symbol, so subtract out
10622 the output section's address but not the
10623 offset of the input section in the output
10625 outrel
.r_addend
-= osec
->vma
;
10628 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
10632 sreloc
= elf_section_data (input_section
)->sreloc
;
10633 if (sreloc
== NULL
)
10636 loc
= sreloc
->contents
;
10637 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10638 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10640 /* If this reloc is against an external symbol, it will
10641 be computed at runtime, so there's no need to do
10642 anything now. However, for the sake of prelink ensure
10643 that the section contents are a known value. */
10646 unresolved_reloc
= FALSE
;
10647 /* The value chosen here is quite arbitrary as ld.so
10648 ignores section contents except for the special
10649 case of .opd where the contents might be accessed
10650 before relocation. Choose zero, as that won't
10651 cause reloc overflow. */
10654 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10655 to improve backward compatibility with older
10657 if (r_type
== R_PPC64_ADDR64
)
10658 addend
= outrel
.r_addend
;
10659 /* Adjust pc_relative relocs to have zero in *r_offset. */
10660 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
10661 addend
= (input_section
->output_section
->vma
10662 + input_section
->output_offset
10669 case R_PPC64_GLOB_DAT
:
10670 case R_PPC64_JMP_SLOT
:
10671 case R_PPC64_RELATIVE
:
10672 /* We shouldn't ever see these dynamic relocs in relocatable
10674 /* Fall through. */
10676 case R_PPC64_PLTGOT16
:
10677 case R_PPC64_PLTGOT16_DS
:
10678 case R_PPC64_PLTGOT16_HA
:
10679 case R_PPC64_PLTGOT16_HI
:
10680 case R_PPC64_PLTGOT16_LO
:
10681 case R_PPC64_PLTGOT16_LO_DS
:
10682 case R_PPC64_PLTREL32
:
10683 case R_PPC64_PLTREL64
:
10684 /* These ones haven't been implemented yet. */
10686 (*_bfd_error_handler
)
10687 (_("%B: relocation %s is not supported for symbol %s."),
10689 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
10691 bfd_set_error (bfd_error_invalid_operation
);
10696 /* Do any further special processing. */
10702 case R_PPC64_ADDR16_HA
:
10703 case R_PPC64_ADDR16_HIGHERA
:
10704 case R_PPC64_ADDR16_HIGHESTA
:
10705 case R_PPC64_GOT16_HA
:
10706 case R_PPC64_PLTGOT16_HA
:
10707 case R_PPC64_PLT16_HA
:
10708 case R_PPC64_TOC16_HA
:
10709 case R_PPC64_SECTOFF_HA
:
10710 case R_PPC64_TPREL16_HA
:
10711 case R_PPC64_DTPREL16_HA
:
10712 case R_PPC64_GOT_TLSGD16_HA
:
10713 case R_PPC64_GOT_TLSLD16_HA
:
10714 case R_PPC64_GOT_TPREL16_HA
:
10715 case R_PPC64_GOT_DTPREL16_HA
:
10716 case R_PPC64_TPREL16_HIGHER
:
10717 case R_PPC64_TPREL16_HIGHERA
:
10718 case R_PPC64_TPREL16_HIGHEST
:
10719 case R_PPC64_TPREL16_HIGHESTA
:
10720 case R_PPC64_DTPREL16_HIGHER
:
10721 case R_PPC64_DTPREL16_HIGHERA
:
10722 case R_PPC64_DTPREL16_HIGHEST
:
10723 case R_PPC64_DTPREL16_HIGHESTA
:
10724 /* It's just possible that this symbol is a weak symbol
10725 that's not actually defined anywhere. In that case,
10726 'sec' would be NULL, and we should leave the symbol
10727 alone (it will be set to zero elsewhere in the link). */
10729 /* Add 0x10000 if sign bit in 0:15 is set.
10730 Bits 0:15 are not used. */
10734 case R_PPC64_ADDR16_DS
:
10735 case R_PPC64_ADDR16_LO_DS
:
10736 case R_PPC64_GOT16_DS
:
10737 case R_PPC64_GOT16_LO_DS
:
10738 case R_PPC64_PLT16_LO_DS
:
10739 case R_PPC64_SECTOFF_DS
:
10740 case R_PPC64_SECTOFF_LO_DS
:
10741 case R_PPC64_TOC16_DS
:
10742 case R_PPC64_TOC16_LO_DS
:
10743 case R_PPC64_PLTGOT16_DS
:
10744 case R_PPC64_PLTGOT16_LO_DS
:
10745 case R_PPC64_GOT_TPREL16_DS
:
10746 case R_PPC64_GOT_TPREL16_LO_DS
:
10747 case R_PPC64_GOT_DTPREL16_DS
:
10748 case R_PPC64_GOT_DTPREL16_LO_DS
:
10749 case R_PPC64_TPREL16_DS
:
10750 case R_PPC64_TPREL16_LO_DS
:
10751 case R_PPC64_DTPREL16_DS
:
10752 case R_PPC64_DTPREL16_LO_DS
:
10753 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
10755 /* If this reloc is against an lq insn, then the value must be
10756 a multiple of 16. This is somewhat of a hack, but the
10757 "correct" way to do this by defining _DQ forms of all the
10758 _DS relocs bloats all reloc switches in this file. It
10759 doesn't seem to make much sense to use any of these relocs
10760 in data, so testing the insn should be safe. */
10761 if ((insn
& (0x3f << 26)) == (56u << 26))
10763 if (((relocation
+ addend
) & mask
) != 0)
10765 (*_bfd_error_handler
)
10766 (_("%B: error: relocation %s not a multiple of %d"),
10768 ppc64_elf_howto_table
[r_type
]->name
,
10770 bfd_set_error (bfd_error_bad_value
);
10777 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10778 because such sections are not SEC_ALLOC and thus ld.so will
10779 not process them. */
10780 if (unresolved_reloc
10781 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
10782 && h
->elf
.def_dynamic
))
10784 (*_bfd_error_handler
)
10785 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10788 (long) rel
->r_offset
,
10789 ppc64_elf_howto_table
[(int) r_type
]->name
,
10790 h
->elf
.root
.root
.string
);
10794 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
10802 if (r
!= bfd_reloc_ok
)
10804 if (sym_name
== NULL
)
10805 sym_name
= "(null)";
10806 if (r
== bfd_reloc_overflow
)
10811 && h
->elf
.root
.type
== bfd_link_hash_undefweak
10812 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
10814 /* Assume this is a call protected by other code that
10815 detects the symbol is undefined. If this is the case,
10816 we can safely ignore the overflow. If not, the
10817 program is hosed anyway, and a little warning isn't
10823 if (!((*info
->callbacks
->reloc_overflow
)
10824 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
10825 ppc64_elf_howto_table
[r_type
]->name
,
10826 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
)))
10831 (*_bfd_error_handler
)
10832 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10835 (long) rel
->r_offset
,
10836 ppc64_elf_howto_table
[r_type
]->name
,
10844 /* If we're emitting relocations, then shortly after this function
10845 returns, reloc offsets and addends for this section will be
10846 adjusted. Worse, reloc symbol indices will be for the output
10847 file rather than the input. Save a copy of the relocs for
10848 opd_entry_value. */
10849 if (is_opd
&& info
->emitrelocations
)
10852 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
10853 rel
= bfd_alloc (input_bfd
, amt
);
10854 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
10855 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
10858 memcpy (rel
, relocs
, amt
);
10863 /* Adjust the value of any local symbols in opd sections. */
10866 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
10867 const char *name ATTRIBUTE_UNUSED
,
10868 Elf_Internal_Sym
*elfsym
,
10869 asection
*input_sec
,
10870 struct elf_link_hash_entry
*h
)
10872 long *opd_adjust
, adjust
;
10878 opd_adjust
= get_opd_info (input_sec
);
10879 if (opd_adjust
== NULL
)
10882 value
= elfsym
->st_value
- input_sec
->output_offset
;
10883 if (!info
->relocatable
)
10884 value
-= input_sec
->output_section
->vma
;
10886 adjust
= opd_adjust
[value
/ 8];
10888 elfsym
->st_value
= 0;
10890 elfsym
->st_value
+= adjust
;
10894 /* Finish up dynamic symbol handling. We set the contents of various
10895 dynamic sections here. */
10898 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
10899 struct bfd_link_info
*info
,
10900 struct elf_link_hash_entry
*h
,
10901 Elf_Internal_Sym
*sym
)
10903 struct ppc_link_hash_table
*htab
;
10905 struct plt_entry
*ent
;
10906 Elf_Internal_Rela rela
;
10909 htab
= ppc_hash_table (info
);
10910 dynobj
= htab
->elf
.dynobj
;
10912 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10913 if (ent
->plt
.offset
!= (bfd_vma
) -1)
10915 /* This symbol has an entry in the procedure linkage
10916 table. Set it up. */
10918 if (htab
->plt
== NULL
10919 || htab
->relplt
== NULL
10920 || htab
->glink
== NULL
)
10923 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10924 fill in the PLT entry. */
10925 rela
.r_offset
= (htab
->plt
->output_section
->vma
10926 + htab
->plt
->output_offset
10927 + ent
->plt
.offset
);
10928 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
10929 rela
.r_addend
= ent
->addend
;
10931 loc
= htab
->relplt
->contents
;
10932 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
10933 * sizeof (Elf64_External_Rela
));
10934 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10939 Elf_Internal_Rela rela
;
10942 /* This symbol needs a copy reloc. Set it up. */
10944 if (h
->dynindx
== -1
10945 || (h
->root
.type
!= bfd_link_hash_defined
10946 && h
->root
.type
!= bfd_link_hash_defweak
)
10947 || htab
->relbss
== NULL
)
10950 rela
.r_offset
= (h
->root
.u
.def
.value
10951 + h
->root
.u
.def
.section
->output_section
->vma
10952 + h
->root
.u
.def
.section
->output_offset
);
10953 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
10955 loc
= htab
->relbss
->contents
;
10956 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10957 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10960 /* Mark some specially defined symbols as absolute. */
10961 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
10962 sym
->st_shndx
= SHN_ABS
;
10967 /* Used to decide how to sort relocs in an optimal manner for the
10968 dynamic linker, before writing them out. */
10970 static enum elf_reloc_type_class
10971 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
10973 enum elf_ppc64_reloc_type r_type
;
10975 r_type
= ELF64_R_TYPE (rela
->r_info
);
10978 case R_PPC64_RELATIVE
:
10979 return reloc_class_relative
;
10980 case R_PPC64_JMP_SLOT
:
10981 return reloc_class_plt
;
10983 return reloc_class_copy
;
10985 return reloc_class_normal
;
10989 /* Finish up the dynamic sections. */
10992 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
10993 struct bfd_link_info
*info
)
10995 struct ppc_link_hash_table
*htab
;
10999 htab
= ppc_hash_table (info
);
11000 dynobj
= htab
->elf
.dynobj
;
11001 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
11003 if (htab
->elf
.dynamic_sections_created
)
11005 Elf64_External_Dyn
*dyncon
, *dynconend
;
11007 if (sdyn
== NULL
|| htab
->got
== NULL
)
11010 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
11011 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
11012 for (; dyncon
< dynconend
; dyncon
++)
11014 Elf_Internal_Dyn dyn
;
11017 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
11024 case DT_PPC64_GLINK
:
11026 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11027 /* We stupidly defined DT_PPC64_GLINK to be the start
11028 of glink rather than the first entry point, which is
11029 what ld.so needs, and now have a bigger stub to
11030 support automatic multiple TOCs. */
11031 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
11035 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11038 dyn
.d_un
.d_ptr
= s
->vma
;
11041 case DT_PPC64_OPDSZ
:
11042 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11045 dyn
.d_un
.d_val
= s
->size
;
11050 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11055 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11059 dyn
.d_un
.d_val
= htab
->relplt
->size
;
11063 /* Don't count procedure linkage table relocs in the
11064 overall reloc count. */
11068 dyn
.d_un
.d_val
-= s
->size
;
11072 /* We may not be using the standard ELF linker script.
11073 If .rela.plt is the first .rela section, we adjust
11074 DT_RELA to not include it. */
11078 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
11080 dyn
.d_un
.d_ptr
+= s
->size
;
11084 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11088 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
11090 /* Fill in the first entry in the global offset table.
11091 We use it to hold the link-time TOCbase. */
11092 bfd_put_64 (output_bfd
,
11093 elf_gp (output_bfd
) + TOC_BASE_OFF
,
11094 htab
->got
->contents
);
11096 /* Set .got entry size. */
11097 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
11100 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
11102 /* Set .plt entry size. */
11103 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
11107 /* We need to handle writing out multiple GOT sections ourselves,
11108 since we didn't add them to DYNOBJ. We know dynobj is the first
11110 while ((dynobj
= dynobj
->link_next
) != NULL
)
11114 if (!is_ppc64_elf_target (dynobj
->xvec
))
11117 s
= ppc64_elf_tdata (dynobj
)->got
;
11120 && s
->output_section
!= bfd_abs_section_ptr
11121 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
11122 s
->contents
, s
->output_offset
,
11125 s
= ppc64_elf_tdata (dynobj
)->relgot
;
11128 && s
->output_section
!= bfd_abs_section_ptr
11129 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
11130 s
->contents
, s
->output_offset
,
11138 #include "elf64-target.h"