1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
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_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
93 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
94 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
95 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
96 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
97 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
98 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
99 #define elf_backend_action_discarded ppc64_elf_action_discarded
100 #define elf_backend_relocate_section ppc64_elf_relocate_section
101 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
102 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
103 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
104 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
105 #define elf_backend_special_sections ppc64_elf_special_sections
107 /* The name of the dynamic interpreter. This is put in the .interp
109 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
111 /* The size in bytes of an entry in the procedure linkage table. */
112 #define PLT_ENTRY_SIZE 24
114 /* The initial size of the plt reserved for the dynamic linker. */
115 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
117 /* TOC base pointers offset from start of TOC. */
118 #define TOC_BASE_OFF 0x8000
120 /* Offset of tp and dtp pointers from start of TLS block. */
121 #define TP_OFFSET 0x7000
122 #define DTP_OFFSET 0x8000
124 /* .plt call stub instructions. The normal stub is like this, but
125 sometimes the .plt entry crosses a 64k boundary and we need to
126 insert an addis to adjust r12. */
127 #define PLT_CALL_STUB_SIZE (7*4)
128 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
129 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
130 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
131 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
132 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
133 /* ld %r11,xxx+16@l(%r12) */
134 #define BCTR 0x4e800420 /* bctr */
137 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
138 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
140 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
142 /* glink call stub instructions. We enter with the index in R0, and the
143 address of glink entry in CTR. From that, we can calculate PLT0. */
144 #define GLINK_CALL_STUB_SIZE (16*4)
145 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
146 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
147 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
148 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
149 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
150 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
151 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
152 /* sub %r12,%r12,%r11 */
153 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
154 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
155 /* ld %r11,xxx@l(%r12) */
156 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
159 /* ld %r11,16(%r12) */
163 #define NOP 0x60000000
165 /* Some other nops. */
166 #define CROR_151515 0x4def7b82
167 #define CROR_313131 0x4ffffb82
169 /* .glink entries for the first 32k functions are two instructions. */
170 #define LI_R0_0 0x38000000 /* li %r0,0 */
171 #define B_DOT 0x48000000 /* b . */
173 /* After that, we need two instructions to load the index, followed by
175 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
176 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
178 /* Instructions used by the save and restore reg functions. */
179 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
180 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
181 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
182 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
183 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
184 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
185 #define LI_R12_0 0x39800000 /* li %r12,0 */
186 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
187 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
188 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
189 #define BLR 0x4e800020 /* blr */
191 /* Since .opd is an array of descriptors and each entry will end up
192 with identical R_PPC64_RELATIVE relocs, there is really no need to
193 propagate .opd relocs; The dynamic linker should be taught to
194 relocate .opd without reloc entries. */
195 #ifndef NO_OPD_RELOCS
196 #define NO_OPD_RELOCS 0
199 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
201 /* Relocation HOWTO's. */
202 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
204 static reloc_howto_type ppc64_elf_howto_raw
[] = {
205 /* This reloc does nothing. */
206 HOWTO (R_PPC64_NONE
, /* type */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
210 FALSE
, /* pc_relative */
212 complain_overflow_dont
, /* complain_on_overflow */
213 bfd_elf_generic_reloc
, /* special_function */
214 "R_PPC64_NONE", /* name */
215 FALSE
, /* partial_inplace */
218 FALSE
), /* pcrel_offset */
220 /* A standard 32 bit relocation. */
221 HOWTO (R_PPC64_ADDR32
, /* type */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
225 FALSE
, /* pc_relative */
227 complain_overflow_bitfield
, /* complain_on_overflow */
228 bfd_elf_generic_reloc
, /* special_function */
229 "R_PPC64_ADDR32", /* name */
230 FALSE
, /* partial_inplace */
232 0xffffffff, /* dst_mask */
233 FALSE
), /* pcrel_offset */
235 /* An absolute 26 bit branch; the lower two bits must be zero.
236 FIXME: we don't check that, we just clear them. */
237 HOWTO (R_PPC64_ADDR24
, /* type */
239 2, /* size (0 = byte, 1 = short, 2 = long) */
241 FALSE
, /* pc_relative */
243 complain_overflow_bitfield
, /* complain_on_overflow */
244 bfd_elf_generic_reloc
, /* special_function */
245 "R_PPC64_ADDR24", /* name */
246 FALSE
, /* partial_inplace */
248 0x03fffffc, /* dst_mask */
249 FALSE
), /* pcrel_offset */
251 /* A standard 16 bit relocation. */
252 HOWTO (R_PPC64_ADDR16
, /* type */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
256 FALSE
, /* pc_relative */
258 complain_overflow_bitfield
, /* complain_on_overflow */
259 bfd_elf_generic_reloc
, /* special_function */
260 "R_PPC64_ADDR16", /* name */
261 FALSE
, /* partial_inplace */
263 0xffff, /* dst_mask */
264 FALSE
), /* pcrel_offset */
266 /* A 16 bit relocation without overflow. */
267 HOWTO (R_PPC64_ADDR16_LO
, /* type */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
271 FALSE
, /* pc_relative */
273 complain_overflow_dont
,/* complain_on_overflow */
274 bfd_elf_generic_reloc
, /* special_function */
275 "R_PPC64_ADDR16_LO", /* name */
276 FALSE
, /* partial_inplace */
278 0xffff, /* dst_mask */
279 FALSE
), /* pcrel_offset */
281 /* Bits 16-31 of an address. */
282 HOWTO (R_PPC64_ADDR16_HI
, /* type */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
286 FALSE
, /* pc_relative */
288 complain_overflow_dont
, /* complain_on_overflow */
289 bfd_elf_generic_reloc
, /* special_function */
290 "R_PPC64_ADDR16_HI", /* name */
291 FALSE
, /* partial_inplace */
293 0xffff, /* dst_mask */
294 FALSE
), /* pcrel_offset */
296 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
297 bits, treated as a signed number, is negative. */
298 HOWTO (R_PPC64_ADDR16_HA
, /* type */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
302 FALSE
, /* pc_relative */
304 complain_overflow_dont
, /* complain_on_overflow */
305 ppc64_elf_ha_reloc
, /* special_function */
306 "R_PPC64_ADDR16_HA", /* name */
307 FALSE
, /* partial_inplace */
309 0xffff, /* dst_mask */
310 FALSE
), /* pcrel_offset */
312 /* An absolute 16 bit branch; the lower two bits must be zero.
313 FIXME: we don't check that, we just clear them. */
314 HOWTO (R_PPC64_ADDR14
, /* type */
316 2, /* size (0 = byte, 1 = short, 2 = long) */
318 FALSE
, /* pc_relative */
320 complain_overflow_bitfield
, /* complain_on_overflow */
321 ppc64_elf_branch_reloc
, /* special_function */
322 "R_PPC64_ADDR14", /* name */
323 FALSE
, /* partial_inplace */
325 0x0000fffc, /* dst_mask */
326 FALSE
), /* pcrel_offset */
328 /* An absolute 16 bit branch, for which bit 10 should be set to
329 indicate that the branch is expected to be taken. The lower two
330 bits must be zero. */
331 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE
, /* pc_relative */
337 complain_overflow_bitfield
, /* complain_on_overflow */
338 ppc64_elf_brtaken_reloc
, /* special_function */
339 "R_PPC64_ADDR14_BRTAKEN",/* name */
340 FALSE
, /* partial_inplace */
342 0x0000fffc, /* dst_mask */
343 FALSE
), /* pcrel_offset */
345 /* An absolute 16 bit branch, for which bit 10 should be set to
346 indicate that the branch is not expected to be taken. The lower
347 two bits must be zero. */
348 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
352 FALSE
, /* pc_relative */
354 complain_overflow_bitfield
, /* complain_on_overflow */
355 ppc64_elf_brtaken_reloc
, /* special_function */
356 "R_PPC64_ADDR14_BRNTAKEN",/* name */
357 FALSE
, /* partial_inplace */
359 0x0000fffc, /* dst_mask */
360 FALSE
), /* pcrel_offset */
362 /* A relative 26 bit branch; the lower two bits must be zero. */
363 HOWTO (R_PPC64_REL24
, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 TRUE
, /* pc_relative */
369 complain_overflow_signed
, /* complain_on_overflow */
370 ppc64_elf_branch_reloc
, /* special_function */
371 "R_PPC64_REL24", /* name */
372 FALSE
, /* partial_inplace */
374 0x03fffffc, /* dst_mask */
375 TRUE
), /* pcrel_offset */
377 /* A relative 16 bit branch; the lower two bits must be zero. */
378 HOWTO (R_PPC64_REL14
, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 TRUE
, /* pc_relative */
384 complain_overflow_signed
, /* complain_on_overflow */
385 ppc64_elf_branch_reloc
, /* special_function */
386 "R_PPC64_REL14", /* name */
387 FALSE
, /* partial_inplace */
389 0x0000fffc, /* dst_mask */
390 TRUE
), /* pcrel_offset */
392 /* A relative 16 bit branch. Bit 10 should be set to indicate that
393 the branch is expected to be taken. The lower two bits must be
395 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
399 TRUE
, /* pc_relative */
401 complain_overflow_signed
, /* complain_on_overflow */
402 ppc64_elf_brtaken_reloc
, /* special_function */
403 "R_PPC64_REL14_BRTAKEN", /* name */
404 FALSE
, /* partial_inplace */
406 0x0000fffc, /* dst_mask */
407 TRUE
), /* pcrel_offset */
409 /* A relative 16 bit branch. Bit 10 should be set to indicate that
410 the branch is not expected to be taken. The lower two bits must
412 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
414 2, /* size (0 = byte, 1 = short, 2 = long) */
416 TRUE
, /* pc_relative */
418 complain_overflow_signed
, /* complain_on_overflow */
419 ppc64_elf_brtaken_reloc
, /* special_function */
420 "R_PPC64_REL14_BRNTAKEN",/* name */
421 FALSE
, /* partial_inplace */
423 0x0000fffc, /* dst_mask */
424 TRUE
), /* pcrel_offset */
426 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
428 HOWTO (R_PPC64_GOT16
, /* type */
430 1, /* size (0 = byte, 1 = short, 2 = long) */
432 FALSE
, /* pc_relative */
434 complain_overflow_signed
, /* complain_on_overflow */
435 ppc64_elf_unhandled_reloc
, /* special_function */
436 "R_PPC64_GOT16", /* name */
437 FALSE
, /* partial_inplace */
439 0xffff, /* dst_mask */
440 FALSE
), /* pcrel_offset */
442 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
444 HOWTO (R_PPC64_GOT16_LO
, /* type */
446 1, /* size (0 = byte, 1 = short, 2 = long) */
448 FALSE
, /* pc_relative */
450 complain_overflow_dont
, /* complain_on_overflow */
451 ppc64_elf_unhandled_reloc
, /* special_function */
452 "R_PPC64_GOT16_LO", /* name */
453 FALSE
, /* partial_inplace */
455 0xffff, /* dst_mask */
456 FALSE
), /* pcrel_offset */
458 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
460 HOWTO (R_PPC64_GOT16_HI
, /* type */
462 1, /* size (0 = byte, 1 = short, 2 = long) */
464 FALSE
, /* pc_relative */
466 complain_overflow_dont
,/* complain_on_overflow */
467 ppc64_elf_unhandled_reloc
, /* special_function */
468 "R_PPC64_GOT16_HI", /* name */
469 FALSE
, /* partial_inplace */
471 0xffff, /* dst_mask */
472 FALSE
), /* pcrel_offset */
474 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
476 HOWTO (R_PPC64_GOT16_HA
, /* type */
478 1, /* size (0 = byte, 1 = short, 2 = long) */
480 FALSE
, /* pc_relative */
482 complain_overflow_dont
,/* complain_on_overflow */
483 ppc64_elf_unhandled_reloc
, /* special_function */
484 "R_PPC64_GOT16_HA", /* name */
485 FALSE
, /* partial_inplace */
487 0xffff, /* dst_mask */
488 FALSE
), /* pcrel_offset */
490 /* This is used only by the dynamic linker. The symbol should exist
491 both in the object being run and in some shared library. The
492 dynamic linker copies the data addressed by the symbol from the
493 shared library into the object, because the object being
494 run has to have the data at some particular address. */
495 HOWTO (R_PPC64_COPY
, /* type */
497 0, /* this one is variable size */
499 FALSE
, /* pc_relative */
501 complain_overflow_dont
, /* complain_on_overflow */
502 ppc64_elf_unhandled_reloc
, /* special_function */
503 "R_PPC64_COPY", /* name */
504 FALSE
, /* partial_inplace */
507 FALSE
), /* pcrel_offset */
509 /* Like R_PPC64_ADDR64, but used when setting global offset table
511 HOWTO (R_PPC64_GLOB_DAT
, /* type */
513 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
515 FALSE
, /* pc_relative */
517 complain_overflow_dont
, /* complain_on_overflow */
518 ppc64_elf_unhandled_reloc
, /* special_function */
519 "R_PPC64_GLOB_DAT", /* name */
520 FALSE
, /* partial_inplace */
522 ONES (64), /* dst_mask */
523 FALSE
), /* pcrel_offset */
525 /* Created by the link editor. Marks a procedure linkage table
526 entry for a symbol. */
527 HOWTO (R_PPC64_JMP_SLOT
, /* type */
529 0, /* size (0 = byte, 1 = short, 2 = long) */
531 FALSE
, /* pc_relative */
533 complain_overflow_dont
, /* complain_on_overflow */
534 ppc64_elf_unhandled_reloc
, /* special_function */
535 "R_PPC64_JMP_SLOT", /* name */
536 FALSE
, /* partial_inplace */
539 FALSE
), /* pcrel_offset */
541 /* Used only by the dynamic linker. When the object is run, this
542 doubleword64 is set to the load address of the object, plus the
544 HOWTO (R_PPC64_RELATIVE
, /* type */
546 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
548 FALSE
, /* pc_relative */
550 complain_overflow_dont
, /* complain_on_overflow */
551 bfd_elf_generic_reloc
, /* special_function */
552 "R_PPC64_RELATIVE", /* name */
553 FALSE
, /* partial_inplace */
555 ONES (64), /* dst_mask */
556 FALSE
), /* pcrel_offset */
558 /* Like R_PPC64_ADDR32, but may be unaligned. */
559 HOWTO (R_PPC64_UADDR32
, /* type */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
563 FALSE
, /* pc_relative */
565 complain_overflow_bitfield
, /* complain_on_overflow */
566 bfd_elf_generic_reloc
, /* special_function */
567 "R_PPC64_UADDR32", /* name */
568 FALSE
, /* partial_inplace */
570 0xffffffff, /* dst_mask */
571 FALSE
), /* pcrel_offset */
573 /* Like R_PPC64_ADDR16, but may be unaligned. */
574 HOWTO (R_PPC64_UADDR16
, /* type */
576 1, /* size (0 = byte, 1 = short, 2 = long) */
578 FALSE
, /* pc_relative */
580 complain_overflow_bitfield
, /* complain_on_overflow */
581 bfd_elf_generic_reloc
, /* special_function */
582 "R_PPC64_UADDR16", /* name */
583 FALSE
, /* partial_inplace */
585 0xffff, /* dst_mask */
586 FALSE
), /* pcrel_offset */
588 /* 32-bit PC relative. */
589 HOWTO (R_PPC64_REL32
, /* type */
591 2, /* size (0 = byte, 1 = short, 2 = long) */
593 TRUE
, /* pc_relative */
595 /* FIXME: Verify. Was complain_overflow_bitfield. */
596 complain_overflow_signed
, /* complain_on_overflow */
597 bfd_elf_generic_reloc
, /* special_function */
598 "R_PPC64_REL32", /* name */
599 FALSE
, /* partial_inplace */
601 0xffffffff, /* dst_mask */
602 TRUE
), /* pcrel_offset */
604 /* 32-bit relocation to the symbol's procedure linkage table. */
605 HOWTO (R_PPC64_PLT32
, /* type */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
609 FALSE
, /* pc_relative */
611 complain_overflow_bitfield
, /* complain_on_overflow */
612 ppc64_elf_unhandled_reloc
, /* special_function */
613 "R_PPC64_PLT32", /* name */
614 FALSE
, /* partial_inplace */
616 0xffffffff, /* dst_mask */
617 FALSE
), /* pcrel_offset */
619 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
620 FIXME: R_PPC64_PLTREL32 not supported. */
621 HOWTO (R_PPC64_PLTREL32
, /* type */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
625 TRUE
, /* pc_relative */
627 complain_overflow_signed
, /* complain_on_overflow */
628 bfd_elf_generic_reloc
, /* special_function */
629 "R_PPC64_PLTREL32", /* name */
630 FALSE
, /* partial_inplace */
632 0xffffffff, /* dst_mask */
633 TRUE
), /* pcrel_offset */
635 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
637 HOWTO (R_PPC64_PLT16_LO
, /* type */
639 1, /* size (0 = byte, 1 = short, 2 = long) */
641 FALSE
, /* pc_relative */
643 complain_overflow_dont
, /* complain_on_overflow */
644 ppc64_elf_unhandled_reloc
, /* special_function */
645 "R_PPC64_PLT16_LO", /* name */
646 FALSE
, /* partial_inplace */
648 0xffff, /* dst_mask */
649 FALSE
), /* pcrel_offset */
651 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
653 HOWTO (R_PPC64_PLT16_HI
, /* type */
655 1, /* size (0 = byte, 1 = short, 2 = long) */
657 FALSE
, /* pc_relative */
659 complain_overflow_dont
, /* complain_on_overflow */
660 ppc64_elf_unhandled_reloc
, /* special_function */
661 "R_PPC64_PLT16_HI", /* name */
662 FALSE
, /* partial_inplace */
664 0xffff, /* dst_mask */
665 FALSE
), /* pcrel_offset */
667 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
669 HOWTO (R_PPC64_PLT16_HA
, /* type */
671 1, /* size (0 = byte, 1 = short, 2 = long) */
673 FALSE
, /* pc_relative */
675 complain_overflow_dont
, /* complain_on_overflow */
676 ppc64_elf_unhandled_reloc
, /* special_function */
677 "R_PPC64_PLT16_HA", /* name */
678 FALSE
, /* partial_inplace */
680 0xffff, /* dst_mask */
681 FALSE
), /* pcrel_offset */
683 /* 16-bit section relative relocation. */
684 HOWTO (R_PPC64_SECTOFF
, /* type */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
688 FALSE
, /* pc_relative */
690 complain_overflow_bitfield
, /* complain_on_overflow */
691 ppc64_elf_sectoff_reloc
, /* special_function */
692 "R_PPC64_SECTOFF", /* name */
693 FALSE
, /* partial_inplace */
695 0xffff, /* dst_mask */
696 FALSE
), /* pcrel_offset */
698 /* Like R_PPC64_SECTOFF, but no overflow warning. */
699 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_dont
, /* complain_on_overflow */
706 ppc64_elf_sectoff_reloc
, /* special_function */
707 "R_PPC64_SECTOFF_LO", /* name */
708 FALSE
, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 /* 16-bit upper half section relative relocation. */
714 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE
, /* pc_relative */
720 complain_overflow_dont
, /* complain_on_overflow */
721 ppc64_elf_sectoff_reloc
, /* special_function */
722 "R_PPC64_SECTOFF_HI", /* name */
723 FALSE
, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE
), /* pcrel_offset */
728 /* 16-bit upper half adjusted section relative relocation. */
729 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE
, /* pc_relative */
735 complain_overflow_dont
, /* complain_on_overflow */
736 ppc64_elf_sectoff_ha_reloc
, /* special_function */
737 "R_PPC64_SECTOFF_HA", /* name */
738 FALSE
, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE
), /* pcrel_offset */
743 /* Like R_PPC64_REL24 without touching the two least significant bits. */
744 HOWTO (R_PPC64_REL30
, /* type */
746 2, /* size (0 = byte, 1 = short, 2 = long) */
748 TRUE
, /* pc_relative */
750 complain_overflow_dont
, /* complain_on_overflow */
751 bfd_elf_generic_reloc
, /* special_function */
752 "R_PPC64_REL30", /* name */
753 FALSE
, /* partial_inplace */
755 0xfffffffc, /* dst_mask */
756 TRUE
), /* pcrel_offset */
758 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
760 /* A standard 64-bit relocation. */
761 HOWTO (R_PPC64_ADDR64
, /* type */
763 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
765 FALSE
, /* pc_relative */
767 complain_overflow_dont
, /* complain_on_overflow */
768 bfd_elf_generic_reloc
, /* special_function */
769 "R_PPC64_ADDR64", /* name */
770 FALSE
, /* partial_inplace */
772 ONES (64), /* dst_mask */
773 FALSE
), /* pcrel_offset */
775 /* The bits 32-47 of an address. */
776 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
778 1, /* size (0 = byte, 1 = short, 2 = long) */
780 FALSE
, /* pc_relative */
782 complain_overflow_dont
, /* complain_on_overflow */
783 bfd_elf_generic_reloc
, /* special_function */
784 "R_PPC64_ADDR16_HIGHER", /* name */
785 FALSE
, /* partial_inplace */
787 0xffff, /* dst_mask */
788 FALSE
), /* pcrel_offset */
790 /* The bits 32-47 of an address, plus 1 if the contents of the low
791 16 bits, treated as a signed number, is negative. */
792 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
794 1, /* size (0 = byte, 1 = short, 2 = long) */
796 FALSE
, /* pc_relative */
798 complain_overflow_dont
, /* complain_on_overflow */
799 ppc64_elf_ha_reloc
, /* special_function */
800 "R_PPC64_ADDR16_HIGHERA", /* name */
801 FALSE
, /* partial_inplace */
803 0xffff, /* dst_mask */
804 FALSE
), /* pcrel_offset */
806 /* The bits 48-63 of an address. */
807 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
809 1, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE
, /* pc_relative */
813 complain_overflow_dont
, /* complain_on_overflow */
814 bfd_elf_generic_reloc
, /* special_function */
815 "R_PPC64_ADDR16_HIGHEST", /* name */
816 FALSE
, /* partial_inplace */
818 0xffff, /* dst_mask */
819 FALSE
), /* pcrel_offset */
821 /* The bits 48-63 of an address, plus 1 if the contents of the low
822 16 bits, treated as a signed number, is negative. */
823 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
825 1, /* size (0 = byte, 1 = short, 2 = long) */
827 FALSE
, /* pc_relative */
829 complain_overflow_dont
, /* complain_on_overflow */
830 ppc64_elf_ha_reloc
, /* special_function */
831 "R_PPC64_ADDR16_HIGHESTA", /* name */
832 FALSE
, /* partial_inplace */
834 0xffff, /* dst_mask */
835 FALSE
), /* pcrel_offset */
837 /* Like ADDR64, but may be unaligned. */
838 HOWTO (R_PPC64_UADDR64
, /* type */
840 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
842 FALSE
, /* pc_relative */
844 complain_overflow_dont
, /* complain_on_overflow */
845 bfd_elf_generic_reloc
, /* special_function */
846 "R_PPC64_UADDR64", /* name */
847 FALSE
, /* partial_inplace */
849 ONES (64), /* dst_mask */
850 FALSE
), /* pcrel_offset */
852 /* 64-bit relative relocation. */
853 HOWTO (R_PPC64_REL64
, /* type */
855 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
857 TRUE
, /* pc_relative */
859 complain_overflow_dont
, /* complain_on_overflow */
860 bfd_elf_generic_reloc
, /* special_function */
861 "R_PPC64_REL64", /* name */
862 FALSE
, /* partial_inplace */
864 ONES (64), /* dst_mask */
865 TRUE
), /* pcrel_offset */
867 /* 64-bit relocation to the symbol's procedure linkage table. */
868 HOWTO (R_PPC64_PLT64
, /* type */
870 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
872 FALSE
, /* pc_relative */
874 complain_overflow_dont
, /* complain_on_overflow */
875 ppc64_elf_unhandled_reloc
, /* special_function */
876 "R_PPC64_PLT64", /* name */
877 FALSE
, /* partial_inplace */
879 ONES (64), /* dst_mask */
880 FALSE
), /* pcrel_offset */
882 /* 64-bit PC relative relocation to the symbol's procedure linkage
884 /* FIXME: R_PPC64_PLTREL64 not supported. */
885 HOWTO (R_PPC64_PLTREL64
, /* type */
887 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
889 TRUE
, /* pc_relative */
891 complain_overflow_dont
, /* complain_on_overflow */
892 ppc64_elf_unhandled_reloc
, /* special_function */
893 "R_PPC64_PLTREL64", /* name */
894 FALSE
, /* partial_inplace */
896 ONES (64), /* dst_mask */
897 TRUE
), /* pcrel_offset */
899 /* 16 bit TOC-relative relocation. */
901 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
902 HOWTO (R_PPC64_TOC16
, /* type */
904 1, /* size (0 = byte, 1 = short, 2 = long) */
906 FALSE
, /* pc_relative */
908 complain_overflow_signed
, /* complain_on_overflow */
909 ppc64_elf_toc_reloc
, /* special_function */
910 "R_PPC64_TOC16", /* name */
911 FALSE
, /* partial_inplace */
913 0xffff, /* dst_mask */
914 FALSE
), /* pcrel_offset */
916 /* 16 bit TOC-relative relocation without overflow. */
918 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
919 HOWTO (R_PPC64_TOC16_LO
, /* type */
921 1, /* size (0 = byte, 1 = short, 2 = long) */
923 FALSE
, /* pc_relative */
925 complain_overflow_dont
, /* complain_on_overflow */
926 ppc64_elf_toc_reloc
, /* special_function */
927 "R_PPC64_TOC16_LO", /* name */
928 FALSE
, /* partial_inplace */
930 0xffff, /* dst_mask */
931 FALSE
), /* pcrel_offset */
933 /* 16 bit TOC-relative relocation, high 16 bits. */
935 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
936 HOWTO (R_PPC64_TOC16_HI
, /* type */
938 1, /* size (0 = byte, 1 = short, 2 = long) */
940 FALSE
, /* pc_relative */
942 complain_overflow_dont
, /* complain_on_overflow */
943 ppc64_elf_toc_reloc
, /* special_function */
944 "R_PPC64_TOC16_HI", /* name */
945 FALSE
, /* partial_inplace */
947 0xffff, /* dst_mask */
948 FALSE
), /* pcrel_offset */
950 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
951 contents of the low 16 bits, treated as a signed number, is
954 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
955 HOWTO (R_PPC64_TOC16_HA
, /* type */
957 1, /* size (0 = byte, 1 = short, 2 = long) */
959 FALSE
, /* pc_relative */
961 complain_overflow_dont
, /* complain_on_overflow */
962 ppc64_elf_toc_ha_reloc
, /* special_function */
963 "R_PPC64_TOC16_HA", /* name */
964 FALSE
, /* partial_inplace */
966 0xffff, /* dst_mask */
967 FALSE
), /* pcrel_offset */
969 /* 64-bit relocation; insert value of TOC base (.TOC.). */
971 /* R_PPC64_TOC 51 doubleword64 .TOC. */
972 HOWTO (R_PPC64_TOC
, /* type */
974 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
976 FALSE
, /* pc_relative */
978 complain_overflow_bitfield
, /* complain_on_overflow */
979 ppc64_elf_toc64_reloc
, /* special_function */
980 "R_PPC64_TOC", /* name */
981 FALSE
, /* partial_inplace */
983 ONES (64), /* dst_mask */
984 FALSE
), /* pcrel_offset */
986 /* Like R_PPC64_GOT16, but also informs the link editor that the
987 value to relocate may (!) refer to a PLT entry which the link
988 editor (a) may replace with the symbol value. If the link editor
989 is unable to fully resolve the symbol, it may (b) create a PLT
990 entry and store the address to the new PLT entry in the GOT.
991 This permits lazy resolution of function symbols at run time.
992 The link editor may also skip all of this and just (c) emit a
993 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
994 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
995 HOWTO (R_PPC64_PLTGOT16
, /* type */
997 1, /* size (0 = byte, 1 = short, 2 = long) */
999 FALSE
, /* pc_relative */
1001 complain_overflow_signed
, /* complain_on_overflow */
1002 ppc64_elf_unhandled_reloc
, /* special_function */
1003 "R_PPC64_PLTGOT16", /* name */
1004 FALSE
, /* partial_inplace */
1006 0xffff, /* dst_mask */
1007 FALSE
), /* pcrel_offset */
1009 /* Like R_PPC64_PLTGOT16, but without overflow. */
1010 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1011 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1013 1, /* size (0 = byte, 1 = short, 2 = long) */
1015 FALSE
, /* pc_relative */
1017 complain_overflow_dont
, /* complain_on_overflow */
1018 ppc64_elf_unhandled_reloc
, /* special_function */
1019 "R_PPC64_PLTGOT16_LO", /* name */
1020 FALSE
, /* partial_inplace */
1022 0xffff, /* dst_mask */
1023 FALSE
), /* pcrel_offset */
1025 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1026 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1027 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1028 16, /* rightshift */
1029 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 FALSE
, /* pc_relative */
1033 complain_overflow_dont
, /* complain_on_overflow */
1034 ppc64_elf_unhandled_reloc
, /* special_function */
1035 "R_PPC64_PLTGOT16_HI", /* name */
1036 FALSE
, /* partial_inplace */
1038 0xffff, /* dst_mask */
1039 FALSE
), /* pcrel_offset */
1041 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1042 1 if the contents of the low 16 bits, treated as a signed number,
1044 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1045 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1046 16, /* rightshift */
1047 1, /* size (0 = byte, 1 = short, 2 = long) */
1049 FALSE
, /* pc_relative */
1051 complain_overflow_dont
,/* complain_on_overflow */
1052 ppc64_elf_unhandled_reloc
, /* special_function */
1053 "R_PPC64_PLTGOT16_HA", /* name */
1054 FALSE
, /* partial_inplace */
1056 0xffff, /* dst_mask */
1057 FALSE
), /* pcrel_offset */
1059 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1060 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE
, /* pc_relative */
1066 complain_overflow_bitfield
, /* complain_on_overflow */
1067 bfd_elf_generic_reloc
, /* special_function */
1068 "R_PPC64_ADDR16_DS", /* name */
1069 FALSE
, /* partial_inplace */
1071 0xfffc, /* dst_mask */
1072 FALSE
), /* pcrel_offset */
1074 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1075 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1079 FALSE
, /* pc_relative */
1081 complain_overflow_dont
,/* complain_on_overflow */
1082 bfd_elf_generic_reloc
, /* special_function */
1083 "R_PPC64_ADDR16_LO_DS",/* name */
1084 FALSE
, /* partial_inplace */
1086 0xfffc, /* dst_mask */
1087 FALSE
), /* pcrel_offset */
1089 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1090 HOWTO (R_PPC64_GOT16_DS
, /* type */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE
, /* pc_relative */
1096 complain_overflow_signed
, /* complain_on_overflow */
1097 ppc64_elf_unhandled_reloc
, /* special_function */
1098 "R_PPC64_GOT16_DS", /* name */
1099 FALSE
, /* partial_inplace */
1101 0xfffc, /* dst_mask */
1102 FALSE
), /* pcrel_offset */
1104 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1109 FALSE
, /* pc_relative */
1111 complain_overflow_dont
, /* complain_on_overflow */
1112 ppc64_elf_unhandled_reloc
, /* special_function */
1113 "R_PPC64_GOT16_LO_DS", /* name */
1114 FALSE
, /* partial_inplace */
1116 0xfffc, /* dst_mask */
1117 FALSE
), /* pcrel_offset */
1119 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 FALSE
, /* pc_relative */
1126 complain_overflow_dont
, /* complain_on_overflow */
1127 ppc64_elf_unhandled_reloc
, /* special_function */
1128 "R_PPC64_PLT16_LO_DS", /* name */
1129 FALSE
, /* partial_inplace */
1131 0xfffc, /* dst_mask */
1132 FALSE
), /* pcrel_offset */
1134 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 FALSE
, /* pc_relative */
1141 complain_overflow_bitfield
, /* complain_on_overflow */
1142 ppc64_elf_sectoff_reloc
, /* special_function */
1143 "R_PPC64_SECTOFF_DS", /* name */
1144 FALSE
, /* partial_inplace */
1146 0xfffc, /* dst_mask */
1147 FALSE
), /* pcrel_offset */
1149 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1150 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 FALSE
, /* pc_relative */
1156 complain_overflow_dont
, /* complain_on_overflow */
1157 ppc64_elf_sectoff_reloc
, /* special_function */
1158 "R_PPC64_SECTOFF_LO_DS",/* name */
1159 FALSE
, /* partial_inplace */
1161 0xfffc, /* dst_mask */
1162 FALSE
), /* pcrel_offset */
1164 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1165 HOWTO (R_PPC64_TOC16_DS
, /* type */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE
, /* pc_relative */
1171 complain_overflow_signed
, /* complain_on_overflow */
1172 ppc64_elf_toc_reloc
, /* special_function */
1173 "R_PPC64_TOC16_DS", /* name */
1174 FALSE
, /* partial_inplace */
1176 0xfffc, /* dst_mask */
1177 FALSE
), /* pcrel_offset */
1179 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1180 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1182 1, /* size (0 = byte, 1 = short, 2 = long) */
1184 FALSE
, /* pc_relative */
1186 complain_overflow_dont
, /* complain_on_overflow */
1187 ppc64_elf_toc_reloc
, /* special_function */
1188 "R_PPC64_TOC16_LO_DS", /* name */
1189 FALSE
, /* partial_inplace */
1191 0xfffc, /* dst_mask */
1192 FALSE
), /* pcrel_offset */
1194 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1195 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1196 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1198 1, /* size (0 = byte, 1 = short, 2 = long) */
1200 FALSE
, /* pc_relative */
1202 complain_overflow_signed
, /* complain_on_overflow */
1203 ppc64_elf_unhandled_reloc
, /* special_function */
1204 "R_PPC64_PLTGOT16_DS", /* name */
1205 FALSE
, /* partial_inplace */
1207 0xfffc, /* dst_mask */
1208 FALSE
), /* pcrel_offset */
1210 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1211 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1212 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE
, /* pc_relative */
1218 complain_overflow_dont
, /* complain_on_overflow */
1219 ppc64_elf_unhandled_reloc
, /* special_function */
1220 "R_PPC64_PLTGOT16_LO_DS",/* name */
1221 FALSE
, /* partial_inplace */
1223 0xfffc, /* dst_mask */
1224 FALSE
), /* pcrel_offset */
1226 /* Marker reloc for TLS. */
1229 2, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE
, /* pc_relative */
1233 complain_overflow_dont
, /* complain_on_overflow */
1234 bfd_elf_generic_reloc
, /* special_function */
1235 "R_PPC64_TLS", /* name */
1236 FALSE
, /* partial_inplace */
1239 FALSE
), /* pcrel_offset */
1241 /* Computes the load module index of the load module that contains the
1242 definition of its TLS sym. */
1243 HOWTO (R_PPC64_DTPMOD64
,
1245 4, /* size (0 = byte, 1 = short, 2 = long) */
1247 FALSE
, /* pc_relative */
1249 complain_overflow_dont
, /* complain_on_overflow */
1250 ppc64_elf_unhandled_reloc
, /* special_function */
1251 "R_PPC64_DTPMOD64", /* name */
1252 FALSE
, /* partial_inplace */
1254 ONES (64), /* dst_mask */
1255 FALSE
), /* pcrel_offset */
1257 /* Computes a dtv-relative displacement, the difference between the value
1258 of sym+add and the base address of the thread-local storage block that
1259 contains the definition of sym, minus 0x8000. */
1260 HOWTO (R_PPC64_DTPREL64
,
1262 4, /* size (0 = byte, 1 = short, 2 = long) */
1264 FALSE
, /* pc_relative */
1266 complain_overflow_dont
, /* complain_on_overflow */
1267 ppc64_elf_unhandled_reloc
, /* special_function */
1268 "R_PPC64_DTPREL64", /* name */
1269 FALSE
, /* partial_inplace */
1271 ONES (64), /* dst_mask */
1272 FALSE
), /* pcrel_offset */
1274 /* A 16 bit dtprel reloc. */
1275 HOWTO (R_PPC64_DTPREL16
,
1277 1, /* size (0 = byte, 1 = short, 2 = long) */
1279 FALSE
, /* pc_relative */
1281 complain_overflow_signed
, /* complain_on_overflow */
1282 ppc64_elf_unhandled_reloc
, /* special_function */
1283 "R_PPC64_DTPREL16", /* name */
1284 FALSE
, /* partial_inplace */
1286 0xffff, /* dst_mask */
1287 FALSE
), /* pcrel_offset */
1289 /* Like DTPREL16, but no overflow. */
1290 HOWTO (R_PPC64_DTPREL16_LO
,
1292 1, /* size (0 = byte, 1 = short, 2 = long) */
1294 FALSE
, /* pc_relative */
1296 complain_overflow_dont
, /* complain_on_overflow */
1297 ppc64_elf_unhandled_reloc
, /* special_function */
1298 "R_PPC64_DTPREL16_LO", /* name */
1299 FALSE
, /* partial_inplace */
1301 0xffff, /* dst_mask */
1302 FALSE
), /* pcrel_offset */
1304 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1305 HOWTO (R_PPC64_DTPREL16_HI
,
1306 16, /* rightshift */
1307 1, /* size (0 = byte, 1 = short, 2 = long) */
1309 FALSE
, /* pc_relative */
1311 complain_overflow_dont
, /* complain_on_overflow */
1312 ppc64_elf_unhandled_reloc
, /* special_function */
1313 "R_PPC64_DTPREL16_HI", /* name */
1314 FALSE
, /* partial_inplace */
1316 0xffff, /* dst_mask */
1317 FALSE
), /* pcrel_offset */
1319 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1320 HOWTO (R_PPC64_DTPREL16_HA
,
1321 16, /* rightshift */
1322 1, /* size (0 = byte, 1 = short, 2 = long) */
1324 FALSE
, /* pc_relative */
1326 complain_overflow_dont
, /* complain_on_overflow */
1327 ppc64_elf_unhandled_reloc
, /* special_function */
1328 "R_PPC64_DTPREL16_HA", /* name */
1329 FALSE
, /* partial_inplace */
1331 0xffff, /* dst_mask */
1332 FALSE
), /* pcrel_offset */
1334 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1335 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1336 32, /* rightshift */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 FALSE
, /* pc_relative */
1341 complain_overflow_dont
, /* complain_on_overflow */
1342 ppc64_elf_unhandled_reloc
, /* special_function */
1343 "R_PPC64_DTPREL16_HIGHER", /* name */
1344 FALSE
, /* partial_inplace */
1346 0xffff, /* dst_mask */
1347 FALSE
), /* pcrel_offset */
1349 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1350 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1351 32, /* rightshift */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 FALSE
, /* pc_relative */
1356 complain_overflow_dont
, /* complain_on_overflow */
1357 ppc64_elf_unhandled_reloc
, /* special_function */
1358 "R_PPC64_DTPREL16_HIGHERA", /* name */
1359 FALSE
, /* partial_inplace */
1361 0xffff, /* dst_mask */
1362 FALSE
), /* pcrel_offset */
1364 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1365 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1366 48, /* rightshift */
1367 1, /* size (0 = byte, 1 = short, 2 = long) */
1369 FALSE
, /* pc_relative */
1371 complain_overflow_dont
, /* complain_on_overflow */
1372 ppc64_elf_unhandled_reloc
, /* special_function */
1373 "R_PPC64_DTPREL16_HIGHEST", /* name */
1374 FALSE
, /* partial_inplace */
1376 0xffff, /* dst_mask */
1377 FALSE
), /* pcrel_offset */
1379 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1380 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1381 48, /* rightshift */
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 FALSE
, /* pc_relative */
1386 complain_overflow_dont
, /* complain_on_overflow */
1387 ppc64_elf_unhandled_reloc
, /* special_function */
1388 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1389 FALSE
, /* partial_inplace */
1391 0xffff, /* dst_mask */
1392 FALSE
), /* pcrel_offset */
1394 /* Like DTPREL16, but for insns with a DS field. */
1395 HOWTO (R_PPC64_DTPREL16_DS
,
1397 1, /* size (0 = byte, 1 = short, 2 = long) */
1399 FALSE
, /* pc_relative */
1401 complain_overflow_signed
, /* complain_on_overflow */
1402 ppc64_elf_unhandled_reloc
, /* special_function */
1403 "R_PPC64_DTPREL16_DS", /* name */
1404 FALSE
, /* partial_inplace */
1406 0xfffc, /* dst_mask */
1407 FALSE
), /* pcrel_offset */
1409 /* Like DTPREL16_DS, but no overflow. */
1410 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1412 1, /* size (0 = byte, 1 = short, 2 = long) */
1414 FALSE
, /* pc_relative */
1416 complain_overflow_dont
, /* complain_on_overflow */
1417 ppc64_elf_unhandled_reloc
, /* special_function */
1418 "R_PPC64_DTPREL16_LO_DS", /* name */
1419 FALSE
, /* partial_inplace */
1421 0xfffc, /* dst_mask */
1422 FALSE
), /* pcrel_offset */
1424 /* Computes a tp-relative displacement, the difference between the value of
1425 sym+add and the value of the thread pointer (r13). */
1426 HOWTO (R_PPC64_TPREL64
,
1428 4, /* size (0 = byte, 1 = short, 2 = long) */
1430 FALSE
, /* pc_relative */
1432 complain_overflow_dont
, /* complain_on_overflow */
1433 ppc64_elf_unhandled_reloc
, /* special_function */
1434 "R_PPC64_TPREL64", /* name */
1435 FALSE
, /* partial_inplace */
1437 ONES (64), /* dst_mask */
1438 FALSE
), /* pcrel_offset */
1440 /* A 16 bit tprel reloc. */
1441 HOWTO (R_PPC64_TPREL16
,
1443 1, /* size (0 = byte, 1 = short, 2 = long) */
1445 FALSE
, /* pc_relative */
1447 complain_overflow_signed
, /* complain_on_overflow */
1448 ppc64_elf_unhandled_reloc
, /* special_function */
1449 "R_PPC64_TPREL16", /* name */
1450 FALSE
, /* partial_inplace */
1452 0xffff, /* dst_mask */
1453 FALSE
), /* pcrel_offset */
1455 /* Like TPREL16, but no overflow. */
1456 HOWTO (R_PPC64_TPREL16_LO
,
1458 1, /* size (0 = byte, 1 = short, 2 = long) */
1460 FALSE
, /* pc_relative */
1462 complain_overflow_dont
, /* complain_on_overflow */
1463 ppc64_elf_unhandled_reloc
, /* special_function */
1464 "R_PPC64_TPREL16_LO", /* name */
1465 FALSE
, /* partial_inplace */
1467 0xffff, /* dst_mask */
1468 FALSE
), /* pcrel_offset */
1470 /* Like TPREL16_LO, but next higher group of 16 bits. */
1471 HOWTO (R_PPC64_TPREL16_HI
,
1472 16, /* rightshift */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1475 FALSE
, /* pc_relative */
1477 complain_overflow_dont
, /* complain_on_overflow */
1478 ppc64_elf_unhandled_reloc
, /* special_function */
1479 "R_PPC64_TPREL16_HI", /* name */
1480 FALSE
, /* partial_inplace */
1482 0xffff, /* dst_mask */
1483 FALSE
), /* pcrel_offset */
1485 /* Like TPREL16_HI, but adjust for low 16 bits. */
1486 HOWTO (R_PPC64_TPREL16_HA
,
1487 16, /* rightshift */
1488 1, /* size (0 = byte, 1 = short, 2 = long) */
1490 FALSE
, /* pc_relative */
1492 complain_overflow_dont
, /* complain_on_overflow */
1493 ppc64_elf_unhandled_reloc
, /* special_function */
1494 "R_PPC64_TPREL16_HA", /* name */
1495 FALSE
, /* partial_inplace */
1497 0xffff, /* dst_mask */
1498 FALSE
), /* pcrel_offset */
1500 /* Like TPREL16_HI, but next higher group of 16 bits. */
1501 HOWTO (R_PPC64_TPREL16_HIGHER
,
1502 32, /* rightshift */
1503 1, /* size (0 = byte, 1 = short, 2 = long) */
1505 FALSE
, /* pc_relative */
1507 complain_overflow_dont
, /* complain_on_overflow */
1508 ppc64_elf_unhandled_reloc
, /* special_function */
1509 "R_PPC64_TPREL16_HIGHER", /* name */
1510 FALSE
, /* partial_inplace */
1512 0xffff, /* dst_mask */
1513 FALSE
), /* pcrel_offset */
1515 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1516 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1517 32, /* rightshift */
1518 1, /* size (0 = byte, 1 = short, 2 = long) */
1520 FALSE
, /* pc_relative */
1522 complain_overflow_dont
, /* complain_on_overflow */
1523 ppc64_elf_unhandled_reloc
, /* special_function */
1524 "R_PPC64_TPREL16_HIGHERA", /* name */
1525 FALSE
, /* partial_inplace */
1527 0xffff, /* dst_mask */
1528 FALSE
), /* pcrel_offset */
1530 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1531 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1532 48, /* rightshift */
1533 1, /* size (0 = byte, 1 = short, 2 = long) */
1535 FALSE
, /* pc_relative */
1537 complain_overflow_dont
, /* complain_on_overflow */
1538 ppc64_elf_unhandled_reloc
, /* special_function */
1539 "R_PPC64_TPREL16_HIGHEST", /* name */
1540 FALSE
, /* partial_inplace */
1542 0xffff, /* dst_mask */
1543 FALSE
), /* pcrel_offset */
1545 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1546 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1547 48, /* rightshift */
1548 1, /* size (0 = byte, 1 = short, 2 = long) */
1550 FALSE
, /* pc_relative */
1552 complain_overflow_dont
, /* complain_on_overflow */
1553 ppc64_elf_unhandled_reloc
, /* special_function */
1554 "R_PPC64_TPREL16_HIGHESTA", /* name */
1555 FALSE
, /* partial_inplace */
1557 0xffff, /* dst_mask */
1558 FALSE
), /* pcrel_offset */
1560 /* Like TPREL16, but for insns with a DS field. */
1561 HOWTO (R_PPC64_TPREL16_DS
,
1563 1, /* size (0 = byte, 1 = short, 2 = long) */
1565 FALSE
, /* pc_relative */
1567 complain_overflow_signed
, /* complain_on_overflow */
1568 ppc64_elf_unhandled_reloc
, /* special_function */
1569 "R_PPC64_TPREL16_DS", /* name */
1570 FALSE
, /* partial_inplace */
1572 0xfffc, /* dst_mask */
1573 FALSE
), /* pcrel_offset */
1575 /* Like TPREL16_DS, but no overflow. */
1576 HOWTO (R_PPC64_TPREL16_LO_DS
,
1578 1, /* size (0 = byte, 1 = short, 2 = long) */
1580 FALSE
, /* pc_relative */
1582 complain_overflow_dont
, /* complain_on_overflow */
1583 ppc64_elf_unhandled_reloc
, /* special_function */
1584 "R_PPC64_TPREL16_LO_DS", /* name */
1585 FALSE
, /* partial_inplace */
1587 0xfffc, /* dst_mask */
1588 FALSE
), /* pcrel_offset */
1590 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1591 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1592 to the first entry relative to the TOC base (r2). */
1593 HOWTO (R_PPC64_GOT_TLSGD16
,
1595 1, /* size (0 = byte, 1 = short, 2 = long) */
1597 FALSE
, /* pc_relative */
1599 complain_overflow_signed
, /* complain_on_overflow */
1600 ppc64_elf_unhandled_reloc
, /* special_function */
1601 "R_PPC64_GOT_TLSGD16", /* name */
1602 FALSE
, /* partial_inplace */
1604 0xffff, /* dst_mask */
1605 FALSE
), /* pcrel_offset */
1607 /* Like GOT_TLSGD16, but no overflow. */
1608 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1610 1, /* size (0 = byte, 1 = short, 2 = long) */
1612 FALSE
, /* pc_relative */
1614 complain_overflow_dont
, /* complain_on_overflow */
1615 ppc64_elf_unhandled_reloc
, /* special_function */
1616 "R_PPC64_GOT_TLSGD16_LO", /* name */
1617 FALSE
, /* partial_inplace */
1619 0xffff, /* dst_mask */
1620 FALSE
), /* pcrel_offset */
1622 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1623 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1624 16, /* rightshift */
1625 1, /* size (0 = byte, 1 = short, 2 = long) */
1627 FALSE
, /* pc_relative */
1629 complain_overflow_dont
, /* complain_on_overflow */
1630 ppc64_elf_unhandled_reloc
, /* special_function */
1631 "R_PPC64_GOT_TLSGD16_HI", /* name */
1632 FALSE
, /* partial_inplace */
1634 0xffff, /* dst_mask */
1635 FALSE
), /* pcrel_offset */
1637 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1638 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1639 16, /* rightshift */
1640 1, /* size (0 = byte, 1 = short, 2 = long) */
1642 FALSE
, /* pc_relative */
1644 complain_overflow_dont
, /* complain_on_overflow */
1645 ppc64_elf_unhandled_reloc
, /* special_function */
1646 "R_PPC64_GOT_TLSGD16_HA", /* name */
1647 FALSE
, /* partial_inplace */
1649 0xffff, /* dst_mask */
1650 FALSE
), /* pcrel_offset */
1652 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1653 with values (sym+add)@dtpmod and zero, and computes the offset to the
1654 first entry relative to the TOC base (r2). */
1655 HOWTO (R_PPC64_GOT_TLSLD16
,
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE
, /* pc_relative */
1661 complain_overflow_signed
, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc
, /* special_function */
1663 "R_PPC64_GOT_TLSLD16", /* name */
1664 FALSE
, /* partial_inplace */
1666 0xffff, /* dst_mask */
1667 FALSE
), /* pcrel_offset */
1669 /* Like GOT_TLSLD16, but no overflow. */
1670 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE
, /* pc_relative */
1676 complain_overflow_dont
, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc
, /* special_function */
1678 "R_PPC64_GOT_TLSLD16_LO", /* name */
1679 FALSE
, /* partial_inplace */
1681 0xffff, /* dst_mask */
1682 FALSE
), /* pcrel_offset */
1684 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1685 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1686 16, /* rightshift */
1687 1, /* size (0 = byte, 1 = short, 2 = long) */
1689 FALSE
, /* pc_relative */
1691 complain_overflow_dont
, /* complain_on_overflow */
1692 ppc64_elf_unhandled_reloc
, /* special_function */
1693 "R_PPC64_GOT_TLSLD16_HI", /* name */
1694 FALSE
, /* partial_inplace */
1696 0xffff, /* dst_mask */
1697 FALSE
), /* pcrel_offset */
1699 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1700 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1701 16, /* rightshift */
1702 1, /* size (0 = byte, 1 = short, 2 = long) */
1704 FALSE
, /* pc_relative */
1706 complain_overflow_dont
, /* complain_on_overflow */
1707 ppc64_elf_unhandled_reloc
, /* special_function */
1708 "R_PPC64_GOT_TLSLD16_HA", /* name */
1709 FALSE
, /* partial_inplace */
1711 0xffff, /* dst_mask */
1712 FALSE
), /* pcrel_offset */
1714 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1715 the offset to the entry relative to the TOC base (r2). */
1716 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1718 1, /* size (0 = byte, 1 = short, 2 = long) */
1720 FALSE
, /* pc_relative */
1722 complain_overflow_signed
, /* complain_on_overflow */
1723 ppc64_elf_unhandled_reloc
, /* special_function */
1724 "R_PPC64_GOT_DTPREL16_DS", /* name */
1725 FALSE
, /* partial_inplace */
1727 0xfffc, /* dst_mask */
1728 FALSE
), /* pcrel_offset */
1730 /* Like GOT_DTPREL16_DS, but no overflow. */
1731 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1733 1, /* size (0 = byte, 1 = short, 2 = long) */
1735 FALSE
, /* pc_relative */
1737 complain_overflow_dont
, /* complain_on_overflow */
1738 ppc64_elf_unhandled_reloc
, /* special_function */
1739 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1740 FALSE
, /* partial_inplace */
1742 0xfffc, /* dst_mask */
1743 FALSE
), /* pcrel_offset */
1745 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1746 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1747 16, /* rightshift */
1748 1, /* size (0 = byte, 1 = short, 2 = long) */
1750 FALSE
, /* pc_relative */
1752 complain_overflow_dont
, /* complain_on_overflow */
1753 ppc64_elf_unhandled_reloc
, /* special_function */
1754 "R_PPC64_GOT_DTPREL16_HI", /* name */
1755 FALSE
, /* partial_inplace */
1757 0xffff, /* dst_mask */
1758 FALSE
), /* pcrel_offset */
1760 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1761 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1762 16, /* rightshift */
1763 1, /* size (0 = byte, 1 = short, 2 = long) */
1765 FALSE
, /* pc_relative */
1767 complain_overflow_dont
, /* complain_on_overflow */
1768 ppc64_elf_unhandled_reloc
, /* special_function */
1769 "R_PPC64_GOT_DTPREL16_HA", /* name */
1770 FALSE
, /* partial_inplace */
1772 0xffff, /* dst_mask */
1773 FALSE
), /* pcrel_offset */
1775 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1776 offset to the entry relative to the TOC base (r2). */
1777 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1779 1, /* size (0 = byte, 1 = short, 2 = long) */
1781 FALSE
, /* pc_relative */
1783 complain_overflow_signed
, /* complain_on_overflow */
1784 ppc64_elf_unhandled_reloc
, /* special_function */
1785 "R_PPC64_GOT_TPREL16_DS", /* name */
1786 FALSE
, /* partial_inplace */
1788 0xfffc, /* dst_mask */
1789 FALSE
), /* pcrel_offset */
1791 /* Like GOT_TPREL16_DS, but no overflow. */
1792 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1794 1, /* size (0 = byte, 1 = short, 2 = long) */
1796 FALSE
, /* pc_relative */
1798 complain_overflow_dont
, /* complain_on_overflow */
1799 ppc64_elf_unhandled_reloc
, /* special_function */
1800 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1801 FALSE
, /* partial_inplace */
1803 0xfffc, /* dst_mask */
1804 FALSE
), /* pcrel_offset */
1806 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1807 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1808 16, /* rightshift */
1809 1, /* size (0 = byte, 1 = short, 2 = long) */
1811 FALSE
, /* pc_relative */
1813 complain_overflow_dont
, /* complain_on_overflow */
1814 ppc64_elf_unhandled_reloc
, /* special_function */
1815 "R_PPC64_GOT_TPREL16_HI", /* name */
1816 FALSE
, /* partial_inplace */
1818 0xffff, /* dst_mask */
1819 FALSE
), /* pcrel_offset */
1821 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1822 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1823 16, /* rightshift */
1824 1, /* size (0 = byte, 1 = short, 2 = long) */
1826 FALSE
, /* pc_relative */
1828 complain_overflow_dont
, /* complain_on_overflow */
1829 ppc64_elf_unhandled_reloc
, /* special_function */
1830 "R_PPC64_GOT_TPREL16_HA", /* name */
1831 FALSE
, /* partial_inplace */
1833 0xffff, /* dst_mask */
1834 FALSE
), /* pcrel_offset */
1836 /* GNU extension to record C++ vtable hierarchy. */
1837 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1839 0, /* size (0 = byte, 1 = short, 2 = long) */
1841 FALSE
, /* pc_relative */
1843 complain_overflow_dont
, /* complain_on_overflow */
1844 NULL
, /* special_function */
1845 "R_PPC64_GNU_VTINHERIT", /* name */
1846 FALSE
, /* partial_inplace */
1849 FALSE
), /* pcrel_offset */
1851 /* GNU extension to record C++ vtable member usage. */
1852 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1854 0, /* size (0 = byte, 1 = short, 2 = long) */
1856 FALSE
, /* pc_relative */
1858 complain_overflow_dont
, /* complain_on_overflow */
1859 NULL
, /* special_function */
1860 "R_PPC64_GNU_VTENTRY", /* name */
1861 FALSE
, /* partial_inplace */
1864 FALSE
), /* pcrel_offset */
1868 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1872 ppc_howto_init (void)
1874 unsigned int i
, type
;
1877 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
1880 type
= ppc64_elf_howto_raw
[i
].type
;
1881 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
1882 / sizeof (ppc64_elf_howto_table
[0])));
1883 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
1887 static reloc_howto_type
*
1888 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1889 bfd_reloc_code_real_type code
)
1891 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
1893 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
1894 /* Initialize howto table if needed. */
1902 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
1904 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
1906 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
1908 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
1910 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
1912 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
1914 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
1916 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
1918 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
1920 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
1922 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
1924 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
1926 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
1928 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
1930 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
1932 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
1934 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
1936 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
1938 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
1940 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
1942 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
1944 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
1946 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
1948 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
1950 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
1952 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
1954 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
1956 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
1958 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
1960 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
1962 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
1964 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
1966 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
1968 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
1970 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
1972 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
1974 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
1976 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
1978 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
1980 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
1982 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
1984 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
1986 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
1988 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
1990 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
1992 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
1994 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
1996 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
1998 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2000 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2002 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2004 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2006 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2008 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2010 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2012 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2014 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2016 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2018 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2020 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2022 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2024 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2026 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2028 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2030 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2032 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2034 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2036 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2038 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2040 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2042 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2044 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2046 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2048 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2050 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2052 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2054 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2056 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2058 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2060 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2062 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2064 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2066 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2068 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2070 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2072 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2074 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2076 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2078 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2080 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2082 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2084 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2086 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2088 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2090 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2092 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2094 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2096 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2098 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2100 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2102 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2106 return ppc64_elf_howto_table
[r
];
2109 /* Set the howto pointer for a PowerPC ELF reloc. */
2112 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2113 Elf_Internal_Rela
*dst
)
2117 /* Initialize howto table if needed. */
2118 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2121 type
= ELF64_R_TYPE (dst
->r_info
);
2122 if (type
>= (sizeof (ppc64_elf_howto_table
)
2123 / sizeof (ppc64_elf_howto_table
[0])))
2125 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2127 type
= R_PPC64_NONE
;
2129 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2132 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2134 static bfd_reloc_status_type
2135 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2136 void *data
, asection
*input_section
,
2137 bfd
*output_bfd
, char **error_message
)
2139 /* If this is a relocatable link (output_bfd test tells us), just
2140 call the generic function. Any adjustment will be done at final
2142 if (output_bfd
!= NULL
)
2143 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2144 input_section
, output_bfd
, error_message
);
2146 /* Adjust the addend for sign extension of the low 16 bits.
2147 We won't actually be using the low 16 bits, so trashing them
2149 reloc_entry
->addend
+= 0x8000;
2150 return bfd_reloc_continue
;
2153 static bfd_reloc_status_type
2154 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2155 void *data
, asection
*input_section
,
2156 bfd
*output_bfd
, char **error_message
)
2158 if (output_bfd
!= NULL
)
2159 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2160 input_section
, output_bfd
, error_message
);
2162 if (strcmp (symbol
->section
->name
, ".opd") == 0
2163 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2165 bfd_vma dest
= opd_entry_value (symbol
->section
,
2166 symbol
->value
+ reloc_entry
->addend
,
2168 if (dest
!= (bfd_vma
) -1)
2169 reloc_entry
->addend
= dest
- (symbol
->value
2170 + symbol
->section
->output_section
->vma
2171 + symbol
->section
->output_offset
);
2173 return bfd_reloc_continue
;
2176 static bfd_reloc_status_type
2177 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2178 void *data
, asection
*input_section
,
2179 bfd
*output_bfd
, char **error_message
)
2182 enum elf_ppc64_reloc_type r_type
;
2183 bfd_size_type octets
;
2184 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2185 bfd_boolean is_power4
= FALSE
;
2187 /* If this is a relocatable link (output_bfd test tells us), just
2188 call the generic function. Any adjustment will be done at final
2190 if (output_bfd
!= NULL
)
2191 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2192 input_section
, output_bfd
, error_message
);
2194 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2195 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2196 insn
&= ~(0x01 << 21);
2197 r_type
= reloc_entry
->howto
->type
;
2198 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2199 || r_type
== R_PPC64_REL14_BRTAKEN
)
2200 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2204 /* Set 'a' bit. This is 0b00010 in BO field for branch
2205 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2206 for branch on CTR insns (BO == 1a00t or 1a01t). */
2207 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2209 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2219 if (!bfd_is_com_section (symbol
->section
))
2220 target
= symbol
->value
;
2221 target
+= symbol
->section
->output_section
->vma
;
2222 target
+= symbol
->section
->output_offset
;
2223 target
+= reloc_entry
->addend
;
2225 from
= (reloc_entry
->address
2226 + input_section
->output_offset
2227 + input_section
->output_section
->vma
);
2229 /* Invert 'y' bit if not the default. */
2230 if ((bfd_signed_vma
) (target
- from
) < 0)
2233 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2235 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2236 input_section
, output_bfd
, error_message
);
2239 static bfd_reloc_status_type
2240 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2241 void *data
, asection
*input_section
,
2242 bfd
*output_bfd
, char **error_message
)
2244 /* If this is a relocatable link (output_bfd test tells us), just
2245 call the generic function. Any adjustment will be done at final
2247 if (output_bfd
!= NULL
)
2248 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2249 input_section
, output_bfd
, error_message
);
2251 /* Subtract the symbol section base address. */
2252 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2253 return bfd_reloc_continue
;
2256 static bfd_reloc_status_type
2257 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2258 void *data
, asection
*input_section
,
2259 bfd
*output_bfd
, char **error_message
)
2261 /* If this is a relocatable link (output_bfd test tells us), just
2262 call the generic function. Any adjustment will be done at final
2264 if (output_bfd
!= NULL
)
2265 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2266 input_section
, output_bfd
, error_message
);
2268 /* Subtract the symbol section base address. */
2269 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2271 /* Adjust the addend for sign extension of the low 16 bits. */
2272 reloc_entry
->addend
+= 0x8000;
2273 return bfd_reloc_continue
;
2276 static bfd_reloc_status_type
2277 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2278 void *data
, asection
*input_section
,
2279 bfd
*output_bfd
, char **error_message
)
2283 /* If this is a relocatable link (output_bfd test tells us), just
2284 call the generic function. Any adjustment will be done at final
2286 if (output_bfd
!= NULL
)
2287 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2288 input_section
, output_bfd
, error_message
);
2290 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2292 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2294 /* Subtract the TOC base address. */
2295 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2296 return bfd_reloc_continue
;
2299 static bfd_reloc_status_type
2300 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2301 void *data
, asection
*input_section
,
2302 bfd
*output_bfd
, char **error_message
)
2306 /* If this is a relocatable link (output_bfd test tells us), just
2307 call the generic function. Any adjustment will be done at final
2309 if (output_bfd
!= NULL
)
2310 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2311 input_section
, output_bfd
, error_message
);
2313 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2315 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2317 /* Subtract the TOC base address. */
2318 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2320 /* Adjust the addend for sign extension of the low 16 bits. */
2321 reloc_entry
->addend
+= 0x8000;
2322 return bfd_reloc_continue
;
2325 static bfd_reloc_status_type
2326 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2327 void *data
, asection
*input_section
,
2328 bfd
*output_bfd
, char **error_message
)
2331 bfd_size_type octets
;
2333 /* If this is a relocatable link (output_bfd test tells us), just
2334 call the generic function. Any adjustment will be done at final
2336 if (output_bfd
!= NULL
)
2337 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2338 input_section
, output_bfd
, error_message
);
2340 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2342 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2344 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2345 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2346 return bfd_reloc_ok
;
2349 static bfd_reloc_status_type
2350 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2351 void *data
, asection
*input_section
,
2352 bfd
*output_bfd
, char **error_message
)
2354 /* If this is a relocatable link (output_bfd test tells us), just
2355 call the generic function. Any adjustment will be done at final
2357 if (output_bfd
!= NULL
)
2358 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2359 input_section
, output_bfd
, error_message
);
2361 if (error_message
!= NULL
)
2363 static char buf
[60];
2364 sprintf (buf
, "generic linker can't handle %s",
2365 reloc_entry
->howto
->name
);
2366 *error_message
= buf
;
2368 return bfd_reloc_dangerous
;
2371 struct ppc64_elf_obj_tdata
2373 struct elf_obj_tdata elf
;
2375 /* Shortcuts to dynamic linker sections. */
2380 /* Used during garbage collection. We attach global symbols defined
2381 on removed .opd entries to this section so that the sym is removed. */
2382 asection
*deleted_section
;
2384 /* Used when adding symbols. */
2385 bfd_boolean has_dotsym
;
2388 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2389 sections means we potentially need one of these for each input bfd. */
2391 bfd_signed_vma refcount
;
2395 /* A copy of relocs before they are modified for --emit-relocs. */
2396 Elf_Internal_Rela
*opd_relocs
;
2399 #define ppc64_elf_tdata(bfd) \
2400 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2402 #define ppc64_tlsld_got(bfd) \
2403 (&ppc64_elf_tdata (bfd)->tlsld_got)
2405 /* Override the generic function because we store some extras. */
2408 ppc64_elf_mkobject (bfd
*abfd
)
2410 bfd_size_type amt
= sizeof (struct ppc64_elf_obj_tdata
);
2411 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2412 if (abfd
->tdata
.any
== NULL
)
2417 /* Return 1 if target is one of ours. */
2420 is_ppc64_elf_target (const struct bfd_target
*targ
)
2422 extern const bfd_target bfd_elf64_powerpc_vec
;
2423 extern const bfd_target bfd_elf64_powerpcle_vec
;
2425 return targ
== &bfd_elf64_powerpc_vec
|| targ
== &bfd_elf64_powerpcle_vec
;
2428 /* Fix bad default arch selected for a 64 bit input bfd when the
2429 default is 32 bit. */
2432 ppc64_elf_object_p (bfd
*abfd
)
2434 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2436 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2438 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2440 /* Relies on arch after 32 bit default being 64 bit default. */
2441 abfd
->arch_info
= abfd
->arch_info
->next
;
2442 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2448 /* Support for core dump NOTE sections. */
2451 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2453 size_t offset
, size
;
2455 if (note
->descsz
!= 504)
2459 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2462 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2468 /* Make a ".reg/999" section. */
2469 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2470 size
, note
->descpos
+ offset
);
2474 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2476 if (note
->descsz
!= 136)
2479 elf_tdata (abfd
)->core_program
2480 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2481 elf_tdata (abfd
)->core_command
2482 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2487 /* Merge backend specific data from an object file to the output
2488 object file when linking. */
2491 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2493 /* Check if we have the same endianess. */
2494 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2495 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2496 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2500 if (bfd_big_endian (ibfd
))
2501 msg
= _("%B: compiled for a big endian system "
2502 "and target is little endian");
2504 msg
= _("%B: compiled for a little endian system "
2505 "and target is big endian");
2507 (*_bfd_error_handler
) (msg
, ibfd
);
2509 bfd_set_error (bfd_error_wrong_format
);
2516 /* Add extra PPC sections. */
2518 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2520 { ".plt", 4, 0, SHT_NOBITS
, 0 },
2521 { ".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2522 { ".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2523 { ".toc", 4, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2524 { ".toc1", 5, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2525 { ".tocbss", 7, 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2526 { NULL
, 0, 0, 0, 0 }
2529 struct _ppc64_elf_section_data
2531 struct bfd_elf_section_data elf
;
2533 /* An array with one entry for each opd function descriptor. */
2536 /* Points to the function code section for local opd entries. */
2537 asection
**func_sec
;
2538 /* After editing .opd, adjust references to opd local syms. */
2542 /* An array for toc sections, indexed by offset/8.
2543 Specifies the relocation symbol index used at a given toc offset. */
2547 #define ppc64_elf_section_data(sec) \
2548 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2551 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2553 if (!sec
->used_by_bfd
)
2555 struct _ppc64_elf_section_data
*sdata
;
2556 bfd_size_type amt
= sizeof (*sdata
);
2558 sdata
= bfd_zalloc (abfd
, amt
);
2561 sec
->used_by_bfd
= sdata
;
2564 return _bfd_elf_new_section_hook (abfd
, sec
);
2568 get_opd_info (asection
* sec
)
2571 && ppc64_elf_section_data (sec
) != NULL
2572 && ppc64_elf_section_data (sec
)->opd
.adjust
!= NULL
)
2573 return ppc64_elf_section_data (sec
)->opd
.adjust
;
2577 /* Parameters for the qsort hook. */
2578 static asection
*synthetic_opd
;
2579 static bfd_boolean synthetic_relocatable
;
2581 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2584 compare_symbols (const void *ap
, const void *bp
)
2586 const asymbol
*a
= * (const asymbol
**) ap
;
2587 const asymbol
*b
= * (const asymbol
**) bp
;
2589 /* Section symbols first. */
2590 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2592 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2595 /* then .opd symbols. */
2596 if (a
->section
== synthetic_opd
&& b
->section
!= synthetic_opd
)
2598 if (a
->section
!= synthetic_opd
&& b
->section
== synthetic_opd
)
2601 /* then other code symbols. */
2602 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2603 == (SEC_CODE
| SEC_ALLOC
)
2604 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2605 != (SEC_CODE
| SEC_ALLOC
))
2608 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2609 != (SEC_CODE
| SEC_ALLOC
)
2610 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2611 == (SEC_CODE
| SEC_ALLOC
))
2614 if (synthetic_relocatable
)
2616 if (a
->section
->id
< b
->section
->id
)
2619 if (a
->section
->id
> b
->section
->id
)
2623 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2626 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2629 /* For syms with the same value, prefer strong dynamic global function
2630 syms over other syms. */
2631 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2634 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2637 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2640 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2643 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2646 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2649 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2652 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2658 /* Search SYMS for a symbol of the given VALUE. */
2661 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2669 mid
= (lo
+ hi
) >> 1;
2670 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2672 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2682 mid
= (lo
+ hi
) >> 1;
2683 if (syms
[mid
]->section
->id
< id
)
2685 else if (syms
[mid
]->section
->id
> id
)
2687 else if (syms
[mid
]->value
< value
)
2689 else if (syms
[mid
]->value
> value
)
2698 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2702 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2703 long static_count
, asymbol
**static_syms
,
2704 long dyn_count
, asymbol
**dyn_syms
,
2711 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2713 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2718 opd
= bfd_get_section_by_name (abfd
, ".opd");
2722 symcount
= static_count
;
2724 symcount
+= dyn_count
;
2728 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2732 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2734 /* Use both symbol tables. */
2735 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2736 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2738 else if (!relocatable
&& static_count
== 0)
2739 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2741 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2743 synthetic_opd
= opd
;
2744 synthetic_relocatable
= relocatable
;
2745 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2747 if (!relocatable
&& symcount
> 1)
2750 /* Trim duplicate syms, since we may have merged the normal and
2751 dynamic symbols. Actually, we only care about syms that have
2752 different values, so trim any with the same value. */
2753 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2754 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
2755 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
2756 syms
[j
++] = syms
[i
];
2761 if (syms
[i
]->section
== opd
)
2765 for (; i
< symcount
; ++i
)
2766 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2767 != (SEC_CODE
| SEC_ALLOC
))
2768 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2772 for (; i
< symcount
; ++i
)
2773 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2777 for (; i
< symcount
; ++i
)
2778 if (syms
[i
]->section
!= opd
)
2782 for (; i
< symcount
; ++i
)
2783 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2784 != (SEC_CODE
| SEC_ALLOC
))
2789 if (opdsymend
== secsymend
)
2794 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2799 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2800 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
2804 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
2811 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2815 while (r
< opd
->relocation
+ relcount
2816 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2819 if (r
== opd
->relocation
+ relcount
)
2822 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2825 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2828 sym
= *r
->sym_ptr_ptr
;
2829 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2830 sym
->section
->id
, sym
->value
+ r
->addend
))
2833 size
+= sizeof (asymbol
);
2834 size
+= strlen (syms
[i
]->name
) + 2;
2838 s
= *ret
= bfd_malloc (size
);
2845 names
= (char *) (s
+ count
);
2847 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2851 while (r
< opd
->relocation
+ relcount
2852 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2855 if (r
== opd
->relocation
+ relcount
)
2858 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2861 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2864 sym
= *r
->sym_ptr_ptr
;
2865 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2866 sym
->section
->id
, sym
->value
+ r
->addend
))
2871 s
->section
= sym
->section
;
2872 s
->value
= sym
->value
+ r
->addend
;
2875 len
= strlen (syms
[i
]->name
);
2876 memcpy (names
, syms
[i
]->name
, len
+ 1);
2887 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
2891 free_contents_and_exit
:
2899 for (i
= secsymend
; i
< opdsymend
; ++i
)
2903 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2904 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2907 size
+= sizeof (asymbol
);
2908 size
+= strlen (syms
[i
]->name
) + 2;
2912 s
= *ret
= bfd_malloc (size
);
2914 goto free_contents_and_exit
;
2916 names
= (char *) (s
+ count
);
2918 for (i
= secsymend
; i
< opdsymend
; ++i
)
2922 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2923 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2927 asection
*sec
= abfd
->sections
;
2934 long mid
= (lo
+ hi
) >> 1;
2935 if (syms
[mid
]->section
->vma
< ent
)
2937 else if (syms
[mid
]->section
->vma
> ent
)
2941 sec
= syms
[mid
]->section
;
2946 if (lo
>= hi
&& lo
> codesecsym
)
2947 sec
= syms
[lo
- 1]->section
;
2949 for (; sec
!= NULL
; sec
= sec
->next
)
2953 if ((sec
->flags
& SEC_ALLOC
) == 0
2954 || (sec
->flags
& SEC_LOAD
) == 0)
2956 if ((sec
->flags
& SEC_CODE
) != 0)
2959 s
->value
= ent
- s
->section
->vma
;
2962 len
= strlen (syms
[i
]->name
);
2963 memcpy (names
, syms
[i
]->name
, len
+ 1);
2976 /* The following functions are specific to the ELF linker, while
2977 functions above are used generally. Those named ppc64_elf_* are
2978 called by the main ELF linker code. They appear in this file more
2979 or less in the order in which they are called. eg.
2980 ppc64_elf_check_relocs is called early in the link process,
2981 ppc64_elf_finish_dynamic_sections is one of the last functions
2984 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2985 functions have both a function code symbol and a function descriptor
2986 symbol. A call to foo in a relocatable object file looks like:
2993 The function definition in another object file might be:
2997 . .quad .TOC.@tocbase
3003 When the linker resolves the call during a static link, the branch
3004 unsurprisingly just goes to .foo and the .opd information is unused.
3005 If the function definition is in a shared library, things are a little
3006 different: The call goes via a plt call stub, the opd information gets
3007 copied to the plt, and the linker patches the nop.
3015 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3016 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3017 . std 2,40(1) # this is the general idea
3025 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3027 The "reloc ()" notation is supposed to indicate that the linker emits
3028 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3031 What are the difficulties here? Well, firstly, the relocations
3032 examined by the linker in check_relocs are against the function code
3033 sym .foo, while the dynamic relocation in the plt is emitted against
3034 the function descriptor symbol, foo. Somewhere along the line, we need
3035 to carefully copy dynamic link information from one symbol to the other.
3036 Secondly, the generic part of the elf linker will make .foo a dynamic
3037 symbol as is normal for most other backends. We need foo dynamic
3038 instead, at least for an application final link. However, when
3039 creating a shared library containing foo, we need to have both symbols
3040 dynamic so that references to .foo are satisfied during the early
3041 stages of linking. Otherwise the linker might decide to pull in a
3042 definition from some other object, eg. a static library.
3044 Update: As of August 2004, we support a new convention. Function
3045 calls may use the function descriptor symbol, ie. "bl foo". This
3046 behaves exactly as "bl .foo". */
3048 /* The linker needs to keep track of the number of relocs that it
3049 decides to copy as dynamic relocs in check_relocs for each symbol.
3050 This is so that it can later discard them if they are found to be
3051 unnecessary. We store the information in a field extending the
3052 regular ELF linker hash table. */
3054 struct ppc_dyn_relocs
3056 struct ppc_dyn_relocs
*next
;
3058 /* The input section of the reloc. */
3061 /* Total number of relocs copied for the input section. */
3062 bfd_size_type count
;
3064 /* Number of pc-relative relocs copied for the input section. */
3065 bfd_size_type pc_count
;
3068 /* Track GOT entries needed for a given symbol. We might need more
3069 than one got entry per symbol. */
3072 struct got_entry
*next
;
3074 /* The symbol addend that we'll be placing in the GOT. */
3077 /* Unlike other ELF targets, we use separate GOT entries for the same
3078 symbol referenced from different input files. This is to support
3079 automatic multiple TOC/GOT sections, where the TOC base can vary
3080 from one input file to another.
3082 Point to the BFD owning this GOT entry. */
3085 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3086 TLS_TPREL or TLS_DTPREL for tls entries. */
3089 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3092 bfd_signed_vma refcount
;
3097 /* The same for PLT. */
3100 struct plt_entry
*next
;
3106 bfd_signed_vma refcount
;
3111 /* Of those relocs that might be copied as dynamic relocs, this macro
3112 selects those that must be copied when linking a shared library,
3113 even when the symbol is local. */
3115 #define MUST_BE_DYN_RELOC(RTYPE) \
3116 ((RTYPE) != R_PPC64_REL32 \
3117 && (RTYPE) != R_PPC64_REL64 \
3118 && (RTYPE) != R_PPC64_REL30)
3120 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3121 copying dynamic variables from a shared lib into an app's dynbss
3122 section, and instead use a dynamic relocation to point into the
3123 shared lib. With code that gcc generates, it's vital that this be
3124 enabled; In the PowerPC64 ABI, the address of a function is actually
3125 the address of a function descriptor, which resides in the .opd
3126 section. gcc uses the descriptor directly rather than going via the
3127 GOT as some other ABI's do, which means that initialized function
3128 pointers must reference the descriptor. Thus, a function pointer
3129 initialized to the address of a function in a shared library will
3130 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3131 redefines the function descriptor symbol to point to the copy. This
3132 presents a problem as a plt entry for that function is also
3133 initialized from the function descriptor symbol and the copy reloc
3134 may not be initialized first. */
3135 #define ELIMINATE_COPY_RELOCS 1
3137 /* Section name for stubs is the associated section name plus this
3139 #define STUB_SUFFIX ".stub"
3142 ppc_stub_long_branch:
3143 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3144 destination, but a 24 bit branch in a stub section will reach.
3147 ppc_stub_plt_branch:
3148 Similar to the above, but a 24 bit branch in the stub section won't
3149 reach its destination.
3150 . addis %r12,%r2,xxx@toc@ha
3151 . ld %r11,xxx@toc@l(%r12)
3156 Used to call a function in a shared library. If it so happens that
3157 the plt entry referenced crosses a 64k boundary, then an extra
3158 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3159 xxx+16 as appropriate.
3160 . addis %r12,%r2,xxx@toc@ha
3162 . ld %r11,xxx+0@toc@l(%r12)
3163 . ld %r2,xxx+8@toc@l(%r12)
3165 . ld %r11,xxx+16@toc@l(%r12)
3168 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3169 code to adjust the value and save r2 to support multiple toc sections.
3170 A ppc_stub_long_branch with an r2 offset looks like:
3172 . addis %r2,%r2,off@ha
3173 . addi %r2,%r2,off@l
3176 A ppc_stub_plt_branch with an r2 offset looks like:
3178 . addis %r12,%r2,xxx@toc@ha
3179 . ld %r11,xxx@toc@l(%r12)
3180 . addis %r2,%r2,off@ha
3181 . addi %r2,%r2,off@l
3186 enum ppc_stub_type
{
3188 ppc_stub_long_branch
,
3189 ppc_stub_long_branch_r2off
,
3190 ppc_stub_plt_branch
,
3191 ppc_stub_plt_branch_r2off
,
3195 struct ppc_stub_hash_entry
{
3197 /* Base hash table entry structure. */
3198 struct bfd_hash_entry root
;
3200 enum ppc_stub_type stub_type
;
3202 /* The stub section. */
3205 /* Offset within stub_sec of the beginning of this stub. */
3206 bfd_vma stub_offset
;
3208 /* Given the symbol's value and its section we can determine its final
3209 value when building the stubs (so the stub knows where to jump. */
3210 bfd_vma target_value
;
3211 asection
*target_section
;
3213 /* The symbol table entry, if any, that this was derived from. */
3214 struct ppc_link_hash_entry
*h
;
3216 /* And the reloc addend that this was derived from. */
3219 /* Where this stub is being called from, or, in the case of combined
3220 stub sections, the first input section in the group. */
3224 struct ppc_branch_hash_entry
{
3226 /* Base hash table entry structure. */
3227 struct bfd_hash_entry root
;
3229 /* Offset within branch lookup table. */
3230 unsigned int offset
;
3232 /* Generation marker. */
3236 struct ppc_link_hash_entry
3238 struct elf_link_hash_entry elf
;
3240 /* A pointer to the most recently used stub hash entry against this
3242 struct ppc_stub_hash_entry
*stub_cache
;
3244 /* Track dynamic relocs copied for this symbol. */
3245 struct ppc_dyn_relocs
*dyn_relocs
;
3247 /* Link between function code and descriptor symbols. */
3248 struct ppc_link_hash_entry
*oh
;
3250 /* Flag function code and descriptor symbols. */
3251 unsigned int is_func
:1;
3252 unsigned int is_func_descriptor
:1;
3253 unsigned int fake
:1;
3255 /* Whether global opd/toc sym has been adjusted or not.
3256 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3257 should be set for all globals defined in any opd/toc section. */
3258 unsigned int adjust_done
:1;
3260 /* Set if we twiddled this symbol to weak at some stage. */
3261 unsigned int was_undefined
:1;
3263 /* Contexts in which symbol is used in the GOT (or TOC).
3264 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3265 corresponding relocs are encountered during check_relocs.
3266 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3267 indicate the corresponding GOT entry type is not needed.
3268 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3269 a TPREL one. We use a separate flag rather than setting TPREL
3270 just for convenience in distinguishing the two cases. */
3271 #define TLS_GD 1 /* GD reloc. */
3272 #define TLS_LD 2 /* LD reloc. */
3273 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3274 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3275 #define TLS_TLS 16 /* Any TLS reloc. */
3276 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3277 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3281 /* ppc64 ELF linker hash table. */
3283 struct ppc_link_hash_table
3285 struct elf_link_hash_table elf
;
3287 /* The stub hash table. */
3288 struct bfd_hash_table stub_hash_table
;
3290 /* Another hash table for plt_branch stubs. */
3291 struct bfd_hash_table branch_hash_table
;
3293 /* Linker stub bfd. */
3296 /* Linker call-backs. */
3297 asection
* (*add_stub_section
) (const char *, asection
*);
3298 void (*layout_sections_again
) (void);
3300 /* Array to keep track of which stub sections have been created, and
3301 information on stub grouping. */
3303 /* This is the section to which stubs in the group will be attached. */
3305 /* The stub section. */
3307 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3311 /* Temp used when calculating TOC pointers. */
3314 /* Highest input section id. */
3317 /* Highest output section index. */
3320 /* List of input sections for each output section. */
3321 asection
**input_list
;
3323 /* Short-cuts to get to dynamic linker sections. */
3334 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3335 struct ppc_link_hash_entry
*tls_get_addr
;
3336 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3339 unsigned long stub_count
[ppc_stub_plt_call
];
3341 /* Number of stubs against global syms. */
3342 unsigned long stub_globals
;
3344 /* Set if we should emit symbols for stubs. */
3345 unsigned int emit_stub_syms
:1;
3347 /* Support for multiple toc sections. */
3348 unsigned int no_multi_toc
:1;
3349 unsigned int multi_toc_needed
:1;
3352 unsigned int stub_error
:1;
3354 /* Flag set when small branches are detected. Used to
3355 select suitable defaults for the stub group size. */
3356 unsigned int has_14bit_branch
:1;
3358 /* Temp used by ppc64_elf_check_directives. */
3359 unsigned int twiddled_syms
:1;
3361 /* Incremented every time we size stubs. */
3362 unsigned int stub_iteration
;
3364 /* Small local sym to section mapping cache. */
3365 struct sym_sec_cache sym_sec
;
3368 /* Rename some of the generic section flags to better document how they
3370 #define has_toc_reloc has_gp_reloc
3371 #define makes_toc_func_call need_finalize_relax
3372 #define call_check_in_progress reloc_done
3374 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3376 #define ppc_hash_table(p) \
3377 ((struct ppc_link_hash_table *) ((p)->hash))
3379 #define ppc_stub_hash_lookup(table, string, create, copy) \
3380 ((struct ppc_stub_hash_entry *) \
3381 bfd_hash_lookup ((table), (string), (create), (copy)))
3383 #define ppc_branch_hash_lookup(table, string, create, copy) \
3384 ((struct ppc_branch_hash_entry *) \
3385 bfd_hash_lookup ((table), (string), (create), (copy)))
3387 /* Create an entry in the stub hash table. */
3389 static struct bfd_hash_entry
*
3390 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3391 struct bfd_hash_table
*table
,
3394 /* Allocate the structure if it has not already been allocated by a
3398 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3403 /* Call the allocation method of the superclass. */
3404 entry
= bfd_hash_newfunc (entry
, table
, string
);
3407 struct ppc_stub_hash_entry
*eh
;
3409 /* Initialize the local fields. */
3410 eh
= (struct ppc_stub_hash_entry
*) entry
;
3411 eh
->stub_type
= ppc_stub_none
;
3412 eh
->stub_sec
= NULL
;
3413 eh
->stub_offset
= 0;
3414 eh
->target_value
= 0;
3415 eh
->target_section
= NULL
;
3423 /* Create an entry in the branch hash table. */
3425 static struct bfd_hash_entry
*
3426 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3427 struct bfd_hash_table
*table
,
3430 /* Allocate the structure if it has not already been allocated by a
3434 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3439 /* Call the allocation method of the superclass. */
3440 entry
= bfd_hash_newfunc (entry
, table
, string
);
3443 struct ppc_branch_hash_entry
*eh
;
3445 /* Initialize the local fields. */
3446 eh
= (struct ppc_branch_hash_entry
*) entry
;
3454 /* Create an entry in a ppc64 ELF linker hash table. */
3456 static struct bfd_hash_entry
*
3457 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3458 struct bfd_hash_table
*table
,
3461 /* Allocate the structure if it has not already been allocated by a
3465 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3470 /* Call the allocation method of the superclass. */
3471 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3474 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3476 memset (&eh
->stub_cache
, 0,
3477 (sizeof (struct ppc_link_hash_entry
)
3478 - offsetof (struct ppc_link_hash_entry
, stub_cache
)));
3484 /* Create a ppc64 ELF linker hash table. */
3486 static struct bfd_link_hash_table
*
3487 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3489 struct ppc_link_hash_table
*htab
;
3490 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3492 htab
= bfd_zmalloc (amt
);
3496 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3497 sizeof (struct ppc_link_hash_entry
)))
3503 /* Init the stub hash table too. */
3504 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3505 sizeof (struct ppc_stub_hash_entry
)))
3508 /* And the branch hash table. */
3509 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3510 sizeof (struct ppc_branch_hash_entry
)))
3513 /* Initializing two fields of the union is just cosmetic. We really
3514 only care about glist, but when compiled on a 32-bit host the
3515 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3516 debugger inspection of these fields look nicer. */
3517 htab
->elf
.init_got_refcount
.refcount
= 0;
3518 htab
->elf
.init_got_refcount
.glist
= NULL
;
3519 htab
->elf
.init_plt_refcount
.refcount
= 0;
3520 htab
->elf
.init_plt_refcount
.glist
= NULL
;
3521 htab
->elf
.init_got_offset
.offset
= 0;
3522 htab
->elf
.init_got_offset
.glist
= NULL
;
3523 htab
->elf
.init_plt_offset
.offset
= 0;
3524 htab
->elf
.init_plt_offset
.glist
= NULL
;
3526 return &htab
->elf
.root
;
3529 /* Free the derived linker hash table. */
3532 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3534 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3536 bfd_hash_table_free (&ret
->stub_hash_table
);
3537 bfd_hash_table_free (&ret
->branch_hash_table
);
3538 _bfd_generic_link_hash_table_free (hash
);
3541 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3544 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3546 struct ppc_link_hash_table
*htab
;
3548 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3550 /* Always hook our dynamic sections into the first bfd, which is the
3551 linker created stub bfd. This ensures that the GOT header is at
3552 the start of the output TOC section. */
3553 htab
= ppc_hash_table (info
);
3554 htab
->stub_bfd
= abfd
;
3555 htab
->elf
.dynobj
= abfd
;
3558 /* Build a name for an entry in the stub hash table. */
3561 ppc_stub_name (const asection
*input_section
,
3562 const asection
*sym_sec
,
3563 const struct ppc_link_hash_entry
*h
,
3564 const Elf_Internal_Rela
*rel
)
3569 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3570 offsets from a sym as a branch target? In fact, we could
3571 probably assume the addend is always zero. */
3572 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3576 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3577 stub_name
= bfd_malloc (len
);
3578 if (stub_name
== NULL
)
3581 sprintf (stub_name
, "%08x.%s+%x",
3582 input_section
->id
& 0xffffffff,
3583 h
->elf
.root
.root
.string
,
3584 (int) rel
->r_addend
& 0xffffffff);
3588 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3589 stub_name
= bfd_malloc (len
);
3590 if (stub_name
== NULL
)
3593 sprintf (stub_name
, "%08x.%x:%x+%x",
3594 input_section
->id
& 0xffffffff,
3595 sym_sec
->id
& 0xffffffff,
3596 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3597 (int) rel
->r_addend
& 0xffffffff);
3599 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
3600 stub_name
[len
- 2] = 0;
3604 /* Look up an entry in the stub hash. Stub entries are cached because
3605 creating the stub name takes a bit of time. */
3607 static struct ppc_stub_hash_entry
*
3608 ppc_get_stub_entry (const asection
*input_section
,
3609 const asection
*sym_sec
,
3610 struct ppc_link_hash_entry
*h
,
3611 const Elf_Internal_Rela
*rel
,
3612 struct ppc_link_hash_table
*htab
)
3614 struct ppc_stub_hash_entry
*stub_entry
;
3615 const asection
*id_sec
;
3617 /* If this input section is part of a group of sections sharing one
3618 stub section, then use the id of the first section in the group.
3619 Stub names need to include a section id, as there may well be
3620 more than one stub used to reach say, printf, and we need to
3621 distinguish between them. */
3622 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3624 if (h
!= NULL
&& h
->stub_cache
!= NULL
3625 && h
->stub_cache
->h
== h
3626 && h
->stub_cache
->id_sec
== id_sec
)
3628 stub_entry
= h
->stub_cache
;
3634 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3635 if (stub_name
== NULL
)
3638 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3639 stub_name
, FALSE
, FALSE
);
3641 h
->stub_cache
= stub_entry
;
3649 /* Add a new stub entry to the stub hash. Not all fields of the new
3650 stub entry are initialised. */
3652 static struct ppc_stub_hash_entry
*
3653 ppc_add_stub (const char *stub_name
,
3655 struct ppc_link_hash_table
*htab
)
3659 struct ppc_stub_hash_entry
*stub_entry
;
3661 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3662 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3663 if (stub_sec
== NULL
)
3665 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3666 if (stub_sec
== NULL
)
3672 namelen
= strlen (link_sec
->name
);
3673 len
= namelen
+ sizeof (STUB_SUFFIX
);
3674 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3678 memcpy (s_name
, link_sec
->name
, namelen
);
3679 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3680 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3681 if (stub_sec
== NULL
)
3683 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3685 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3688 /* Enter this entry into the linker stub hash table. */
3689 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3691 if (stub_entry
== NULL
)
3693 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
3694 section
->owner
, stub_name
);
3698 stub_entry
->stub_sec
= stub_sec
;
3699 stub_entry
->stub_offset
= 0;
3700 stub_entry
->id_sec
= link_sec
;
3704 /* Create sections for linker generated code. */
3707 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3709 struct ppc_link_hash_table
*htab
;
3712 htab
= ppc_hash_table (info
);
3714 /* Create .sfpr for code to save and restore fp regs. */
3715 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3716 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3717 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
3719 if (htab
->sfpr
== NULL
3720 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3723 /* Create .glink for lazy dynamic linking support. */
3724 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
3726 if (htab
->glink
== NULL
3727 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 2))
3730 /* Create branch lookup table for plt_branch stubs. */
3733 flags
= (SEC_ALLOC
| SEC_LOAD
3734 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3736 = bfd_make_section_anyway_with_flags (dynobj
, ".data.rel.ro.brlt",
3741 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3742 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3744 = bfd_make_section_anyway_with_flags (dynobj
, ".rodata.brlt", flags
);
3747 if (htab
->brlt
== NULL
3748 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3753 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3754 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3756 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.data.rel.ro.brlt",
3759 else if (info
->emitrelocations
)
3761 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3762 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3764 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.rodata.brlt",
3771 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3777 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3778 not already done. */
3781 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3783 asection
*got
, *relgot
;
3785 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
3789 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
3792 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
3797 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3798 | SEC_LINKER_CREATED
);
3800 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
3802 || !bfd_set_section_alignment (abfd
, got
, 3))
3805 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
3806 flags
| SEC_READONLY
);
3808 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
3811 ppc64_elf_tdata (abfd
)->got
= got
;
3812 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
3816 /* Create the dynamic sections, and set up shortcuts. */
3819 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3821 struct ppc_link_hash_table
*htab
;
3823 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3826 htab
= ppc_hash_table (info
);
3828 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3829 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3830 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3831 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3833 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3835 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3836 || (!info
->shared
&& !htab
->relbss
))
3842 /* Merge PLT info on FROM with that on TO. */
3845 move_plt_plist (struct ppc_link_hash_entry
*from
,
3846 struct ppc_link_hash_entry
*to
)
3848 if (from
->elf
.plt
.plist
!= NULL
)
3850 if (to
->elf
.plt
.plist
!= NULL
)
3852 struct plt_entry
**entp
;
3853 struct plt_entry
*ent
;
3855 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3857 struct plt_entry
*dent
;
3859 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3860 if (dent
->addend
== ent
->addend
)
3862 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3869 *entp
= to
->elf
.plt
.plist
;
3872 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
3873 from
->elf
.plt
.plist
= NULL
;
3877 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3880 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3881 struct elf_link_hash_entry
*dir
,
3882 struct elf_link_hash_entry
*ind
)
3884 struct ppc_link_hash_entry
*edir
, *eind
;
3886 edir
= (struct ppc_link_hash_entry
*) dir
;
3887 eind
= (struct ppc_link_hash_entry
*) ind
;
3889 /* Copy over any dynamic relocs we may have on the indirect sym. */
3890 if (eind
->dyn_relocs
!= NULL
)
3892 if (edir
->dyn_relocs
!= NULL
)
3894 struct ppc_dyn_relocs
**pp
;
3895 struct ppc_dyn_relocs
*p
;
3897 /* Add reloc counts against the indirect sym to the direct sym
3898 list. Merge any entries against the same section. */
3899 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3901 struct ppc_dyn_relocs
*q
;
3903 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3904 if (q
->sec
== p
->sec
)
3906 q
->pc_count
+= p
->pc_count
;
3907 q
->count
+= p
->count
;
3914 *pp
= edir
->dyn_relocs
;
3917 edir
->dyn_relocs
= eind
->dyn_relocs
;
3918 eind
->dyn_relocs
= NULL
;
3921 edir
->is_func
|= eind
->is_func
;
3922 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
3923 edir
->tls_mask
|= eind
->tls_mask
;
3925 /* If called to transfer flags for a weakdef during processing
3926 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3927 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3928 if (!(ELIMINATE_COPY_RELOCS
3929 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3930 && edir
->elf
.dynamic_adjusted
))
3931 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3933 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3934 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3935 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3936 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3938 /* If we were called to copy over info for a weak sym, that's all. */
3939 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3942 /* Copy over got entries that we may have already seen to the
3943 symbol which just became indirect. */
3944 if (eind
->elf
.got
.glist
!= NULL
)
3946 if (edir
->elf
.got
.glist
!= NULL
)
3948 struct got_entry
**entp
;
3949 struct got_entry
*ent
;
3951 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
3953 struct got_entry
*dent
;
3955 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
3956 if (dent
->addend
== ent
->addend
3957 && dent
->owner
== ent
->owner
3958 && dent
->tls_type
== ent
->tls_type
)
3960 dent
->got
.refcount
+= ent
->got
.refcount
;
3967 *entp
= edir
->elf
.got
.glist
;
3970 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
3971 eind
->elf
.got
.glist
= NULL
;
3974 /* And plt entries. */
3975 move_plt_plist (eind
, edir
);
3977 if (eind
->elf
.dynindx
!= -1)
3979 if (edir
->elf
.dynindx
!= -1)
3980 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3981 edir
->elf
.dynstr_index
);
3982 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3983 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3984 eind
->elf
.dynindx
= -1;
3985 eind
->elf
.dynstr_index
= 0;
3989 /* Find the function descriptor hash entry from the given function code
3990 hash entry FH. Link the entries via their OH fields. */
3992 static struct ppc_link_hash_entry
*
3993 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
3995 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
3999 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4001 fdh
= (struct ppc_link_hash_entry
*)
4002 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4005 fdh
->is_func_descriptor
= 1;
4015 /* Make a fake function descriptor sym for the code sym FH. */
4017 static struct ppc_link_hash_entry
*
4018 make_fdh (struct bfd_link_info
*info
,
4019 struct ppc_link_hash_entry
*fh
)
4023 struct bfd_link_hash_entry
*bh
;
4024 struct ppc_link_hash_entry
*fdh
;
4026 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4027 newsym
= bfd_make_empty_symbol (abfd
);
4028 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4029 newsym
->section
= bfd_und_section_ptr
;
4031 newsym
->flags
= BSF_WEAK
;
4034 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4035 newsym
->flags
, newsym
->section
,
4036 newsym
->value
, NULL
, FALSE
, FALSE
,
4040 fdh
= (struct ppc_link_hash_entry
*) bh
;
4041 fdh
->elf
.non_elf
= 0;
4043 fdh
->is_func_descriptor
= 1;
4050 /* Hacks to support old ABI code.
4051 When making function calls, old ABI code references function entry
4052 points (dot symbols), while new ABI code references the function
4053 descriptor symbol. We need to make any combination of reference and
4054 definition work together, without breaking archive linking.
4056 For a defined function "foo" and an undefined call to "bar":
4057 An old object defines "foo" and ".foo", references ".bar" (possibly
4059 A new object defines "foo" and references "bar".
4061 A new object thus has no problem with its undefined symbols being
4062 satisfied by definitions in an old object. On the other hand, the
4063 old object won't have ".bar" satisfied by a new object. */
4065 /* Fix function descriptor symbols defined in .opd sections to be
4069 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4070 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4071 Elf_Internal_Sym
*isym
,
4073 flagword
*flags ATTRIBUTE_UNUSED
,
4075 bfd_vma
*value ATTRIBUTE_UNUSED
)
4078 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
4079 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4081 if ((*name
)[0] == '.'
4082 && ELF_ST_BIND (isym
->st_info
) == STB_GLOBAL
4083 && ELF_ST_TYPE (isym
->st_info
) < STT_SECTION
4084 && is_ppc64_elf_target (ibfd
->xvec
))
4085 ppc64_elf_tdata (ibfd
)->u
.has_dotsym
= 1;
4090 /* This function makes an old ABI object reference to ".bar" cause the
4091 inclusion of a new ABI object archive that defines "bar".
4092 NAME is a symbol defined in an archive. Return a symbol in the hash
4093 table that might be satisfied by the archive symbols. */
4095 static struct elf_link_hash_entry
*
4096 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4097 struct bfd_link_info
*info
,
4100 struct elf_link_hash_entry
*h
;
4104 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4106 /* Don't return this sym if it is a fake function descriptor
4107 created by add_symbol_adjust. */
4108 && !(h
->root
.type
== bfd_link_hash_undefweak
4109 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4115 len
= strlen (name
);
4116 dot_name
= bfd_alloc (abfd
, len
+ 2);
4117 if (dot_name
== NULL
)
4118 return (struct elf_link_hash_entry
*) 0 - 1;
4120 memcpy (dot_name
+ 1, name
, len
+ 1);
4121 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4122 bfd_release (abfd
, dot_name
);
4126 /* This function satisfies all old ABI object references to ".bar" if a
4127 new ABI object defines "bar". Well, at least, undefined dot symbols
4128 are made weak. This stops later archive searches from including an
4129 object if we already have a function descriptor definition. It also
4130 prevents the linker complaining about undefined symbols.
4131 We also check and correct mismatched symbol visibility here. The
4132 most restrictive visibility of the function descriptor and the
4133 function entry symbol is used. */
4135 struct add_symbol_adjust_data
4137 struct bfd_link_info
*info
;
4142 add_symbol_adjust (struct elf_link_hash_entry
*h
, void *inf
)
4144 struct add_symbol_adjust_data
*data
;
4145 struct ppc_link_hash_table
*htab
;
4146 struct ppc_link_hash_entry
*eh
;
4147 struct ppc_link_hash_entry
*fdh
;
4149 if (h
->root
.type
== bfd_link_hash_indirect
)
4152 if (h
->root
.type
== bfd_link_hash_warning
)
4153 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4155 if (h
->root
.root
.string
[0] != '.')
4159 htab
= ppc_hash_table (data
->info
);
4160 eh
= (struct ppc_link_hash_entry
*) h
;
4161 fdh
= get_fdh (eh
, htab
);
4163 && !data
->info
->relocatable
4164 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4165 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4166 && eh
->elf
.ref_regular
)
4168 /* Make an undefweak function descriptor sym, which is enough to
4169 pull in an --as-needed shared lib, but won't cause link
4170 errors. Archives are handled elsewhere. */
4171 fdh
= make_fdh (data
->info
, eh
);
4175 fdh
->elf
.ref_regular
= 1;
4177 else if (fdh
!= NULL
)
4179 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4180 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4181 if (entry_vis
< descr_vis
)
4182 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4183 else if (entry_vis
> descr_vis
)
4184 eh
->elf
.other
+= descr_vis
- entry_vis
;
4186 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4187 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4188 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4190 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4191 eh
->was_undefined
= 1;
4192 htab
->twiddled_syms
= 1;
4200 ppc64_elf_check_directives (bfd
*abfd
, struct bfd_link_info
*info
)
4202 struct ppc_link_hash_table
*htab
;
4203 struct add_symbol_adjust_data data
;
4205 if (!is_ppc64_elf_target (abfd
->xvec
))
4208 if (!ppc64_elf_tdata (abfd
)->u
.has_dotsym
)
4210 ppc64_elf_tdata (abfd
)->u
.deleted_section
= NULL
;
4212 htab
= ppc_hash_table (info
);
4213 if (!is_ppc64_elf_target (htab
->elf
.root
.creator
))
4218 elf_link_hash_traverse (&htab
->elf
, add_symbol_adjust
, &data
);
4220 /* We need to fix the undefs list for any syms we have twiddled to
4222 if (htab
->twiddled_syms
)
4224 bfd_link_repair_undef_list (&htab
->elf
.root
);
4225 htab
->twiddled_syms
= 0;
4231 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4232 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4234 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4235 char *local_got_tls_masks
;
4237 if (local_got_ents
== NULL
)
4239 bfd_size_type size
= symtab_hdr
->sh_info
;
4241 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
4242 local_got_ents
= bfd_zalloc (abfd
, size
);
4243 if (local_got_ents
== NULL
)
4245 elf_local_got_ents (abfd
) = local_got_ents
;
4248 if ((tls_type
& TLS_EXPLICIT
) == 0)
4250 struct got_entry
*ent
;
4252 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4253 if (ent
->addend
== r_addend
4254 && ent
->owner
== abfd
4255 && ent
->tls_type
== tls_type
)
4259 bfd_size_type amt
= sizeof (*ent
);
4260 ent
= bfd_alloc (abfd
, amt
);
4263 ent
->next
= local_got_ents
[r_symndx
];
4264 ent
->addend
= r_addend
;
4266 ent
->tls_type
= tls_type
;
4267 ent
->got
.refcount
= 0;
4268 local_got_ents
[r_symndx
] = ent
;
4270 ent
->got
.refcount
+= 1;
4273 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
4274 local_got_tls_masks
[r_symndx
] |= tls_type
;
4279 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
4281 struct plt_entry
*ent
;
4283 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4284 if (ent
->addend
== addend
)
4288 bfd_size_type amt
= sizeof (*ent
);
4289 ent
= bfd_alloc (abfd
, amt
);
4292 ent
->next
= eh
->elf
.plt
.plist
;
4293 ent
->addend
= addend
;
4294 ent
->plt
.refcount
= 0;
4295 eh
->elf
.plt
.plist
= ent
;
4297 ent
->plt
.refcount
+= 1;
4298 eh
->elf
.needs_plt
= 1;
4299 if (eh
->elf
.root
.root
.string
[0] == '.'
4300 && eh
->elf
.root
.root
.string
[1] != '\0')
4305 /* Look through the relocs for a section during the first phase, and
4306 calculate needed space in the global offset table, procedure
4307 linkage table, and dynamic reloc sections. */
4310 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4311 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4313 struct ppc_link_hash_table
*htab
;
4314 Elf_Internal_Shdr
*symtab_hdr
;
4315 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4316 const Elf_Internal_Rela
*rel
;
4317 const Elf_Internal_Rela
*rel_end
;
4319 asection
**opd_sym_map
;
4321 if (info
->relocatable
)
4324 /* Don't do anything special with non-loaded, non-alloced sections.
4325 In particular, any relocs in such sections should not affect GOT
4326 and PLT reference counting (ie. we don't allow them to create GOT
4327 or PLT entries), there's no possibility or desire to optimize TLS
4328 relocs, and there's not much point in propagating relocs to shared
4329 libs that the dynamic linker won't relocate. */
4330 if ((sec
->flags
& SEC_ALLOC
) == 0)
4333 htab
= ppc_hash_table (info
);
4334 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4336 sym_hashes
= elf_sym_hashes (abfd
);
4337 sym_hashes_end
= (sym_hashes
4338 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4339 - symtab_hdr
->sh_info
);
4343 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4345 /* Garbage collection needs some extra help with .opd sections.
4346 We don't want to necessarily keep everything referenced by
4347 relocs in .opd, as that would keep all functions. Instead,
4348 if we reference an .opd symbol (a function descriptor), we
4349 want to keep the function code symbol's section. This is
4350 easy for global symbols, but for local syms we need to keep
4351 information about the associated function section. Later, if
4352 edit_opd deletes entries, we'll use this array to adjust
4353 local syms in .opd. */
4355 asection
*func_section
;
4360 amt
= sec
->size
* sizeof (union opd_info
) / 8;
4361 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4362 if (opd_sym_map
== NULL
)
4364 ppc64_elf_section_data (sec
)->opd
.func_sec
= opd_sym_map
;
4367 if (htab
->sfpr
== NULL
4368 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4371 rel_end
= relocs
+ sec
->reloc_count
;
4372 for (rel
= relocs
; rel
< rel_end
; rel
++)
4374 unsigned long r_symndx
;
4375 struct elf_link_hash_entry
*h
;
4376 enum elf_ppc64_reloc_type r_type
;
4379 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4380 if (r_symndx
< symtab_hdr
->sh_info
)
4384 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4385 while (h
->root
.type
== bfd_link_hash_indirect
4386 || h
->root
.type
== bfd_link_hash_warning
)
4387 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4390 r_type
= ELF64_R_TYPE (rel
->r_info
);
4393 case R_PPC64_GOT_TLSLD16
:
4394 case R_PPC64_GOT_TLSLD16_LO
:
4395 case R_PPC64_GOT_TLSLD16_HI
:
4396 case R_PPC64_GOT_TLSLD16_HA
:
4397 ppc64_tlsld_got (abfd
)->refcount
+= 1;
4398 tls_type
= TLS_TLS
| TLS_LD
;
4401 case R_PPC64_GOT_TLSGD16
:
4402 case R_PPC64_GOT_TLSGD16_LO
:
4403 case R_PPC64_GOT_TLSGD16_HI
:
4404 case R_PPC64_GOT_TLSGD16_HA
:
4405 tls_type
= TLS_TLS
| TLS_GD
;
4408 case R_PPC64_GOT_TPREL16_DS
:
4409 case R_PPC64_GOT_TPREL16_LO_DS
:
4410 case R_PPC64_GOT_TPREL16_HI
:
4411 case R_PPC64_GOT_TPREL16_HA
:
4413 info
->flags
|= DF_STATIC_TLS
;
4414 tls_type
= TLS_TLS
| TLS_TPREL
;
4417 case R_PPC64_GOT_DTPREL16_DS
:
4418 case R_PPC64_GOT_DTPREL16_LO_DS
:
4419 case R_PPC64_GOT_DTPREL16_HI
:
4420 case R_PPC64_GOT_DTPREL16_HA
:
4421 tls_type
= TLS_TLS
| TLS_DTPREL
;
4423 sec
->has_tls_reloc
= 1;
4427 case R_PPC64_GOT16_DS
:
4428 case R_PPC64_GOT16_HA
:
4429 case R_PPC64_GOT16_HI
:
4430 case R_PPC64_GOT16_LO
:
4431 case R_PPC64_GOT16_LO_DS
:
4432 /* This symbol requires a global offset table entry. */
4433 sec
->has_toc_reloc
= 1;
4434 if (ppc64_elf_tdata (abfd
)->got
== NULL
4435 && !create_got_section (abfd
, info
))
4440 struct ppc_link_hash_entry
*eh
;
4441 struct got_entry
*ent
;
4443 eh
= (struct ppc_link_hash_entry
*) h
;
4444 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4445 if (ent
->addend
== rel
->r_addend
4446 && ent
->owner
== abfd
4447 && ent
->tls_type
== tls_type
)
4451 bfd_size_type amt
= sizeof (*ent
);
4452 ent
= bfd_alloc (abfd
, amt
);
4455 ent
->next
= eh
->elf
.got
.glist
;
4456 ent
->addend
= rel
->r_addend
;
4458 ent
->tls_type
= tls_type
;
4459 ent
->got
.refcount
= 0;
4460 eh
->elf
.got
.glist
= ent
;
4462 ent
->got
.refcount
+= 1;
4463 eh
->tls_mask
|= tls_type
;
4466 /* This is a global offset table entry for a local symbol. */
4467 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4468 rel
->r_addend
, tls_type
))
4472 case R_PPC64_PLT16_HA
:
4473 case R_PPC64_PLT16_HI
:
4474 case R_PPC64_PLT16_LO
:
4477 /* This symbol requires a procedure linkage table entry. We
4478 actually build the entry in adjust_dynamic_symbol,
4479 because this might be a case of linking PIC code without
4480 linking in any dynamic objects, in which case we don't
4481 need to generate a procedure linkage table after all. */
4484 /* It does not make sense to have a procedure linkage
4485 table entry for a local symbol. */
4486 bfd_set_error (bfd_error_bad_value
);
4490 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4495 /* The following relocations don't need to propagate the
4496 relocation if linking a shared object since they are
4497 section relative. */
4498 case R_PPC64_SECTOFF
:
4499 case R_PPC64_SECTOFF_LO
:
4500 case R_PPC64_SECTOFF_HI
:
4501 case R_PPC64_SECTOFF_HA
:
4502 case R_PPC64_SECTOFF_DS
:
4503 case R_PPC64_SECTOFF_LO_DS
:
4504 case R_PPC64_DTPREL16
:
4505 case R_PPC64_DTPREL16_LO
:
4506 case R_PPC64_DTPREL16_HI
:
4507 case R_PPC64_DTPREL16_HA
:
4508 case R_PPC64_DTPREL16_DS
:
4509 case R_PPC64_DTPREL16_LO_DS
:
4510 case R_PPC64_DTPREL16_HIGHER
:
4511 case R_PPC64_DTPREL16_HIGHERA
:
4512 case R_PPC64_DTPREL16_HIGHEST
:
4513 case R_PPC64_DTPREL16_HIGHESTA
:
4518 case R_PPC64_TOC16_LO
:
4519 case R_PPC64_TOC16_HI
:
4520 case R_PPC64_TOC16_HA
:
4521 case R_PPC64_TOC16_DS
:
4522 case R_PPC64_TOC16_LO_DS
:
4523 sec
->has_toc_reloc
= 1;
4526 /* This relocation describes the C++ object vtable hierarchy.
4527 Reconstruct it for later use during GC. */
4528 case R_PPC64_GNU_VTINHERIT
:
4529 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4533 /* This relocation describes which C++ vtable entries are actually
4534 used. Record for later use during GC. */
4535 case R_PPC64_GNU_VTENTRY
:
4536 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4541 case R_PPC64_REL14_BRTAKEN
:
4542 case R_PPC64_REL14_BRNTAKEN
:
4544 asection
*dest
= NULL
;
4546 /* Heuristic: If jumping outside our section, chances are
4547 we are going to need a stub. */
4550 /* If the sym is weak it may be overridden later, so
4551 don't assume we know where a weak sym lives. */
4552 if (h
->root
.type
== bfd_link_hash_defined
)
4553 dest
= h
->root
.u
.def
.section
;
4556 dest
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4559 htab
->has_14bit_branch
= 1;
4566 /* We may need a .plt entry if the function this reloc
4567 refers to is in a shared lib. */
4568 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4571 if (h
== &htab
->tls_get_addr
->elf
4572 || h
== &htab
->tls_get_addr_fd
->elf
)
4573 sec
->has_tls_reloc
= 1;
4574 else if (htab
->tls_get_addr
== NULL
4575 && !strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
4576 && (h
->root
.root
.string
[15] == 0
4577 || h
->root
.root
.string
[15] == '@'))
4579 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) h
;
4580 sec
->has_tls_reloc
= 1;
4582 else if (htab
->tls_get_addr_fd
== NULL
4583 && !strncmp (h
->root
.root
.string
, "__tls_get_addr", 14)
4584 && (h
->root
.root
.string
[14] == 0
4585 || h
->root
.root
.string
[14] == '@'))
4587 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) h
;
4588 sec
->has_tls_reloc
= 1;
4593 case R_PPC64_TPREL64
:
4594 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4596 info
->flags
|= DF_STATIC_TLS
;
4599 case R_PPC64_DTPMOD64
:
4600 if (rel
+ 1 < rel_end
4601 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4602 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4603 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4605 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4608 case R_PPC64_DTPREL64
:
4609 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4611 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4612 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4613 /* This is the second reloc of a dtpmod, dtprel pair.
4614 Don't mark with TLS_DTPREL. */
4618 sec
->has_tls_reloc
= 1;
4621 struct ppc_link_hash_entry
*eh
;
4622 eh
= (struct ppc_link_hash_entry
*) h
;
4623 eh
->tls_mask
|= tls_type
;
4626 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4627 rel
->r_addend
, tls_type
))
4630 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4632 /* One extra to simplify get_tls_mask. */
4633 bfd_size_type amt
= sec
->size
* sizeof (unsigned) / 8 + 1;
4634 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
4635 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4638 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4639 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
4641 /* Mark the second slot of a GD or LD entry.
4642 -1 to indicate GD and -2 to indicate LD. */
4643 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4644 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
4645 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4646 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
4649 case R_PPC64_TPREL16
:
4650 case R_PPC64_TPREL16_LO
:
4651 case R_PPC64_TPREL16_HI
:
4652 case R_PPC64_TPREL16_HA
:
4653 case R_PPC64_TPREL16_DS
:
4654 case R_PPC64_TPREL16_LO_DS
:
4655 case R_PPC64_TPREL16_HIGHER
:
4656 case R_PPC64_TPREL16_HIGHERA
:
4657 case R_PPC64_TPREL16_HIGHEST
:
4658 case R_PPC64_TPREL16_HIGHESTA
:
4661 info
->flags
|= DF_STATIC_TLS
;
4666 case R_PPC64_ADDR64
:
4667 if (opd_sym_map
!= NULL
4668 && rel
+ 1 < rel_end
4669 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
4673 if (h
->root
.root
.string
[0] == '.'
4674 && h
->root
.root
.string
[1] != 0
4675 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
4678 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
4684 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
4689 opd_sym_map
[rel
->r_offset
/ 8] = s
;
4697 case R_PPC64_ADDR14
:
4698 case R_PPC64_ADDR14_BRNTAKEN
:
4699 case R_PPC64_ADDR14_BRTAKEN
:
4700 case R_PPC64_ADDR16
:
4701 case R_PPC64_ADDR16_DS
:
4702 case R_PPC64_ADDR16_HA
:
4703 case R_PPC64_ADDR16_HI
:
4704 case R_PPC64_ADDR16_HIGHER
:
4705 case R_PPC64_ADDR16_HIGHERA
:
4706 case R_PPC64_ADDR16_HIGHEST
:
4707 case R_PPC64_ADDR16_HIGHESTA
:
4708 case R_PPC64_ADDR16_LO
:
4709 case R_PPC64_ADDR16_LO_DS
:
4710 case R_PPC64_ADDR24
:
4711 case R_PPC64_ADDR32
:
4712 case R_PPC64_UADDR16
:
4713 case R_PPC64_UADDR32
:
4714 case R_PPC64_UADDR64
:
4716 if (h
!= NULL
&& !info
->shared
)
4717 /* We may need a copy reloc. */
4720 /* Don't propagate .opd relocs. */
4721 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
4724 /* If we are creating a shared library, and this is a reloc
4725 against a global symbol, or a non PC relative reloc
4726 against a local symbol, then we need to copy the reloc
4727 into the shared library. However, if we are linking with
4728 -Bsymbolic, we do not need to copy a reloc against a
4729 global symbol which is defined in an object we are
4730 including in the link (i.e., DEF_REGULAR is set). At
4731 this point we have not seen all the input files, so it is
4732 possible that DEF_REGULAR is not set now but will be set
4733 later (it is never cleared). In case of a weak definition,
4734 DEF_REGULAR may be cleared later by a strong definition in
4735 a shared library. We account for that possibility below by
4736 storing information in the dyn_relocs field of the hash
4737 table entry. A similar situation occurs when creating
4738 shared libraries and symbol visibility changes render the
4741 If on the other hand, we are creating an executable, we
4742 may need to keep relocations for symbols satisfied by a
4743 dynamic library if we manage to avoid copy relocs for the
4747 && (MUST_BE_DYN_RELOC (r_type
)
4749 && (! info
->symbolic
4750 || h
->root
.type
== bfd_link_hash_defweak
4751 || !h
->def_regular
))))
4752 || (ELIMINATE_COPY_RELOCS
4755 && (h
->root
.type
== bfd_link_hash_defweak
4756 || !h
->def_regular
)))
4758 struct ppc_dyn_relocs
*p
;
4759 struct ppc_dyn_relocs
**head
;
4761 /* We must copy these reloc types into the output file.
4762 Create a reloc section in dynobj and make room for
4769 name
= (bfd_elf_string_from_elf_section
4771 elf_elfheader (abfd
)->e_shstrndx
,
4772 elf_section_data (sec
)->rel_hdr
.sh_name
));
4776 if (strncmp (name
, ".rela", 5) != 0
4777 || strcmp (bfd_get_section_name (abfd
, sec
),
4780 (*_bfd_error_handler
)
4781 (_("%B: bad relocation section name `%s\'"),
4783 bfd_set_error (bfd_error_bad_value
);
4786 dynobj
= htab
->elf
.dynobj
;
4787 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4792 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
4793 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
4794 | SEC_ALLOC
| SEC_LOAD
);
4795 sreloc
= bfd_make_section_with_flags (dynobj
,
4799 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
4802 elf_section_data (sec
)->sreloc
= sreloc
;
4805 /* If this is a global symbol, we count the number of
4806 relocations we need for this symbol. */
4809 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4813 /* Track dynamic relocs needed for local syms too.
4814 We really need local syms available to do this
4820 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4825 vpp
= &elf_section_data (s
)->local_dynrel
;
4826 head
= (struct ppc_dyn_relocs
**) vpp
;
4830 if (p
== NULL
|| p
->sec
!= sec
)
4832 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4843 if (!MUST_BE_DYN_RELOC (r_type
))
4856 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4857 of the code entry point, and its section. */
4860 opd_entry_value (asection
*opd_sec
,
4862 asection
**code_sec
,
4865 bfd
*opd_bfd
= opd_sec
->owner
;
4866 Elf_Internal_Rela
*relocs
;
4867 Elf_Internal_Rela
*lo
, *hi
, *look
;
4870 /* No relocs implies we are linking a --just-symbols object. */
4871 if (opd_sec
->reloc_count
== 0)
4875 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
4876 return (bfd_vma
) -1;
4878 if (code_sec
!= NULL
)
4880 asection
*sec
, *likely
= NULL
;
4881 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4883 && (sec
->flags
& SEC_LOAD
) != 0
4884 && (sec
->flags
& SEC_ALLOC
) != 0)
4889 if (code_off
!= NULL
)
4890 *code_off
= val
- likely
->vma
;
4896 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
4898 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
4900 /* Go find the opd reloc at the sym address. */
4902 BFD_ASSERT (lo
!= NULL
);
4903 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
4907 look
= lo
+ (hi
- lo
) / 2;
4908 if (look
->r_offset
< offset
)
4910 else if (look
->r_offset
> offset
)
4914 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (opd_bfd
)->symtab_hdr
;
4915 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
4916 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
4918 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
4921 if (symndx
< symtab_hdr
->sh_info
)
4923 Elf_Internal_Sym
*sym
;
4925 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4928 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
4929 symtab_hdr
->sh_info
,
4930 0, NULL
, NULL
, NULL
);
4933 symtab_hdr
->contents
= (bfd_byte
*) sym
;
4937 val
= sym
->st_value
;
4939 if ((sym
->st_shndx
!= SHN_UNDEF
4940 && sym
->st_shndx
< SHN_LORESERVE
)
4941 || sym
->st_shndx
> SHN_HIRESERVE
)
4942 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
4943 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
4947 struct elf_link_hash_entry
**sym_hashes
;
4948 struct elf_link_hash_entry
*rh
;
4950 sym_hashes
= elf_sym_hashes (opd_bfd
);
4951 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
4952 while (rh
->root
.type
== bfd_link_hash_indirect
4953 || rh
->root
.type
== bfd_link_hash_warning
)
4954 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
4955 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
4956 || rh
->root
.type
== bfd_link_hash_defweak
);
4957 val
= rh
->root
.u
.def
.value
;
4958 sec
= rh
->root
.u
.def
.section
;
4960 val
+= look
->r_addend
;
4961 if (code_off
!= NULL
)
4963 if (code_sec
!= NULL
)
4965 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
4966 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
4975 /* Mark sections containing dynamically referenced symbols. When
4976 building shared libraries, we must assume that any visible symbol is
4980 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
4982 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
4983 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
4985 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4986 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4988 /* Dynamic linking info is on the func descriptor sym. */
4990 && eh
->oh
->is_func_descriptor
4991 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
4992 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
4995 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
4996 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
4997 && (eh
->elf
.ref_dynamic
4998 || (!info
->executable
4999 && eh
->elf
.def_regular
5000 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5001 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5005 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5007 /* Function descriptor syms cause the associated
5008 function code sym section to be marked. */
5009 if (eh
->is_func_descriptor
5010 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5011 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5012 eh
->oh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5013 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5014 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5015 eh
->elf
.root
.u
.def
.value
,
5016 &code_sec
, NULL
) != (bfd_vma
) -1)
5017 code_sec
->flags
|= SEC_KEEP
;
5023 /* Return the section that should be marked against GC for a given
5027 ppc64_elf_gc_mark_hook (asection
*sec
,
5028 struct bfd_link_info
*info
,
5029 Elf_Internal_Rela
*rel
,
5030 struct elf_link_hash_entry
*h
,
5031 Elf_Internal_Sym
*sym
)
5035 /* First mark all our entry sym sections. */
5036 if (info
->gc_sym_list
!= NULL
)
5038 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5039 struct bfd_sym_chain
*sym
= info
->gc_sym_list
;
5041 info
->gc_sym_list
= NULL
;
5042 for (; sym
!= NULL
; sym
= sym
->next
)
5044 struct ppc_link_hash_entry
*eh
;
5046 eh
= (struct ppc_link_hash_entry
*)
5047 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
5050 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5051 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5054 if (eh
->is_func_descriptor
5055 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5056 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5057 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
5058 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5059 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5060 eh
->elf
.root
.u
.def
.value
,
5061 &rsec
, NULL
) != (bfd_vma
) -1)
5067 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
5069 rsec
= eh
->elf
.root
.u
.def
.section
;
5071 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
5075 /* Syms return NULL if we're marking .opd, so we avoid marking all
5076 function sections, as all functions are referenced in .opd. */
5078 if (get_opd_info (sec
) != NULL
)
5083 enum elf_ppc64_reloc_type r_type
;
5084 struct ppc_link_hash_entry
*eh
;
5086 r_type
= ELF64_R_TYPE (rel
->r_info
);
5089 case R_PPC64_GNU_VTINHERIT
:
5090 case R_PPC64_GNU_VTENTRY
:
5094 switch (h
->root
.type
)
5096 case bfd_link_hash_defined
:
5097 case bfd_link_hash_defweak
:
5098 eh
= (struct ppc_link_hash_entry
*) h
;
5100 && eh
->oh
->is_func_descriptor
5101 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5102 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5105 /* Function descriptor syms cause the associated
5106 function code sym section to be marked. */
5107 if (eh
->is_func_descriptor
5108 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5109 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5111 /* They also mark their opd section. */
5112 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
5113 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
5114 ppc64_elf_gc_mark_hook
);
5116 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
5118 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5119 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5120 eh
->elf
.root
.u
.def
.value
,
5121 &rsec
, NULL
) != (bfd_vma
) -1)
5123 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
5124 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
5125 ppc64_elf_gc_mark_hook
);
5128 rsec
= h
->root
.u
.def
.section
;
5131 case bfd_link_hash_common
:
5132 rsec
= h
->root
.u
.c
.p
->section
;
5142 asection
**opd_sym_section
;
5144 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5145 opd_sym_section
= get_opd_info (rsec
);
5146 if (opd_sym_section
!= NULL
)
5149 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
5151 rsec
= opd_sym_section
[(sym
->st_value
+ rel
->r_addend
) / 8];
5158 /* Update the .got, .plt. and dynamic reloc reference counts for the
5159 section being removed. */
5162 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5163 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5165 struct ppc_link_hash_table
*htab
;
5166 Elf_Internal_Shdr
*symtab_hdr
;
5167 struct elf_link_hash_entry
**sym_hashes
;
5168 struct got_entry
**local_got_ents
;
5169 const Elf_Internal_Rela
*rel
, *relend
;
5171 if ((sec
->flags
& SEC_ALLOC
) == 0)
5174 elf_section_data (sec
)->local_dynrel
= NULL
;
5176 htab
= ppc_hash_table (info
);
5177 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5178 sym_hashes
= elf_sym_hashes (abfd
);
5179 local_got_ents
= elf_local_got_ents (abfd
);
5181 relend
= relocs
+ sec
->reloc_count
;
5182 for (rel
= relocs
; rel
< relend
; rel
++)
5184 unsigned long r_symndx
;
5185 enum elf_ppc64_reloc_type r_type
;
5186 struct elf_link_hash_entry
*h
= NULL
;
5189 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5190 r_type
= ELF64_R_TYPE (rel
->r_info
);
5191 if (r_symndx
>= symtab_hdr
->sh_info
)
5193 struct ppc_link_hash_entry
*eh
;
5194 struct ppc_dyn_relocs
**pp
;
5195 struct ppc_dyn_relocs
*p
;
5197 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5198 while (h
->root
.type
== bfd_link_hash_indirect
5199 || h
->root
.type
== bfd_link_hash_warning
)
5200 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5201 eh
= (struct ppc_link_hash_entry
*) h
;
5203 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5206 /* Everything must go for SEC. */
5214 case R_PPC64_GOT_TLSLD16
:
5215 case R_PPC64_GOT_TLSLD16_LO
:
5216 case R_PPC64_GOT_TLSLD16_HI
:
5217 case R_PPC64_GOT_TLSLD16_HA
:
5218 ppc64_tlsld_got (abfd
)->refcount
-= 1;
5219 tls_type
= TLS_TLS
| TLS_LD
;
5222 case R_PPC64_GOT_TLSGD16
:
5223 case R_PPC64_GOT_TLSGD16_LO
:
5224 case R_PPC64_GOT_TLSGD16_HI
:
5225 case R_PPC64_GOT_TLSGD16_HA
:
5226 tls_type
= TLS_TLS
| TLS_GD
;
5229 case R_PPC64_GOT_TPREL16_DS
:
5230 case R_PPC64_GOT_TPREL16_LO_DS
:
5231 case R_PPC64_GOT_TPREL16_HI
:
5232 case R_PPC64_GOT_TPREL16_HA
:
5233 tls_type
= TLS_TLS
| TLS_TPREL
;
5236 case R_PPC64_GOT_DTPREL16_DS
:
5237 case R_PPC64_GOT_DTPREL16_LO_DS
:
5238 case R_PPC64_GOT_DTPREL16_HI
:
5239 case R_PPC64_GOT_DTPREL16_HA
:
5240 tls_type
= TLS_TLS
| TLS_DTPREL
;
5244 case R_PPC64_GOT16_DS
:
5245 case R_PPC64_GOT16_HA
:
5246 case R_PPC64_GOT16_HI
:
5247 case R_PPC64_GOT16_LO
:
5248 case R_PPC64_GOT16_LO_DS
:
5251 struct got_entry
*ent
;
5256 ent
= local_got_ents
[r_symndx
];
5258 for (; ent
!= NULL
; ent
= ent
->next
)
5259 if (ent
->addend
== rel
->r_addend
5260 && ent
->owner
== abfd
5261 && ent
->tls_type
== tls_type
)
5265 if (ent
->got
.refcount
> 0)
5266 ent
->got
.refcount
-= 1;
5270 case R_PPC64_PLT16_HA
:
5271 case R_PPC64_PLT16_HI
:
5272 case R_PPC64_PLT16_LO
:
5276 case R_PPC64_REL14_BRNTAKEN
:
5277 case R_PPC64_REL14_BRTAKEN
:
5281 struct plt_entry
*ent
;
5283 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5284 if (ent
->addend
== rel
->r_addend
)
5288 if (ent
->plt
.refcount
> 0)
5289 ent
->plt
.refcount
-= 1;
5300 /* The maximum size of .sfpr. */
5301 #define SFPR_MAX (218*4)
5303 struct sfpr_def_parms
5305 const char name
[12];
5306 unsigned char lo
, hi
;
5307 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5308 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5311 /* Auto-generate _save*, _rest* functions in .sfpr. */
5314 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5316 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5318 size_t len
= strlen (parm
->name
);
5319 bfd_boolean writing
= FALSE
;
5322 memcpy (sym
, parm
->name
, len
);
5325 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5327 struct elf_link_hash_entry
*h
;
5329 sym
[len
+ 0] = i
/ 10 + '0';
5330 sym
[len
+ 1] = i
% 10 + '0';
5331 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5335 h
->root
.type
= bfd_link_hash_defined
;
5336 h
->root
.u
.def
.section
= htab
->sfpr
;
5337 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5340 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5342 if (htab
->sfpr
->contents
== NULL
)
5344 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5345 if (htab
->sfpr
->contents
== NULL
)
5351 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5353 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5355 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5356 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5364 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5366 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5371 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5373 p
= savegpr0 (abfd
, p
, r
);
5374 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5376 bfd_put_32 (abfd
, BLR
, p
);
5381 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5383 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5388 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5390 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5392 p
= restgpr0 (abfd
, p
, r
);
5393 bfd_put_32 (abfd
, MTLR_R0
, p
);
5397 p
= restgpr0 (abfd
, p
, 30);
5398 p
= restgpr0 (abfd
, p
, 31);
5400 bfd_put_32 (abfd
, BLR
, p
);
5405 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5407 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5412 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5414 p
= savegpr1 (abfd
, p
, r
);
5415 bfd_put_32 (abfd
, BLR
, p
);
5420 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5422 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5427 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5429 p
= restgpr1 (abfd
, p
, r
);
5430 bfd_put_32 (abfd
, BLR
, p
);
5435 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5437 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5442 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5444 p
= savefpr (abfd
, p
, r
);
5445 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5447 bfd_put_32 (abfd
, BLR
, p
);
5452 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5454 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5459 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5461 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5463 p
= restfpr (abfd
, p
, r
);
5464 bfd_put_32 (abfd
, MTLR_R0
, p
);
5468 p
= restfpr (abfd
, p
, 30);
5469 p
= restfpr (abfd
, p
, 31);
5471 bfd_put_32 (abfd
, BLR
, p
);
5476 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5478 p
= savefpr (abfd
, p
, r
);
5479 bfd_put_32 (abfd
, BLR
, p
);
5484 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5486 p
= restfpr (abfd
, p
, r
);
5487 bfd_put_32 (abfd
, BLR
, p
);
5492 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5494 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5496 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5501 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5503 p
= savevr (abfd
, p
, r
);
5504 bfd_put_32 (abfd
, BLR
, p
);
5509 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5511 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5513 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5518 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5520 p
= restvr (abfd
, p
, r
);
5521 bfd_put_32 (abfd
, BLR
, p
);
5525 /* Called via elf_link_hash_traverse to transfer dynamic linking
5526 information on function code symbol entries to their corresponding
5527 function descriptor symbol entries. */
5530 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5532 struct bfd_link_info
*info
;
5533 struct ppc_link_hash_table
*htab
;
5534 struct plt_entry
*ent
;
5535 struct ppc_link_hash_entry
*fh
;
5536 struct ppc_link_hash_entry
*fdh
;
5537 bfd_boolean force_local
;
5539 fh
= (struct ppc_link_hash_entry
*) h
;
5540 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5543 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5544 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5547 htab
= ppc_hash_table (info
);
5549 /* Resolve undefined references to dot-symbols as the value
5550 in the function descriptor, if we have one in a regular object.
5551 This is to satisfy cases like ".quad .foo". Calls to functions
5552 in dynamic objects are handled elsewhere. */
5553 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5554 && fh
->was_undefined
5555 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5556 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5557 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5558 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5559 fh
->oh
->elf
.root
.u
.def
.value
,
5560 &fh
->elf
.root
.u
.def
.section
,
5561 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5563 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5564 fh
->elf
.forced_local
= 1;
5567 /* If this is a function code symbol, transfer dynamic linking
5568 information to the function descriptor symbol. */
5572 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5573 if (ent
->plt
.refcount
> 0)
5576 || fh
->elf
.root
.root
.string
[0] != '.'
5577 || fh
->elf
.root
.root
.string
[1] == '\0')
5580 /* Find the corresponding function descriptor symbol. Create it
5581 as undefined if necessary. */
5583 fdh
= get_fdh (fh
, htab
);
5585 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5586 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5587 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5591 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5592 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5594 fdh
= make_fdh (info
, fh
);
5599 /* Fake function descriptors are made undefweak. If the function
5600 code symbol is strong undefined, make the fake sym the same.
5601 If the function code symbol is defined, then force the fake
5602 descriptor local; We can't support overriding of symbols in a
5603 shared library on a fake descriptor. */
5607 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5609 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
5611 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
5612 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
5614 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
5615 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5617 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
5622 && !fdh
->elf
.forced_local
5624 || fdh
->elf
.def_dynamic
5625 || fdh
->elf
.ref_dynamic
5626 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5627 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5629 if (fdh
->elf
.dynindx
== -1)
5630 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5632 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
5633 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
5634 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
5635 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
5636 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5638 move_plt_plist (fh
, fdh
);
5639 fdh
->elf
.needs_plt
= 1;
5641 fdh
->is_func_descriptor
= 1;
5646 /* Now that the info is on the function descriptor, clear the
5647 function code sym info. Any function code syms for which we
5648 don't have a definition in a regular file, we force local.
5649 This prevents a shared library from exporting syms that have
5650 been imported from another library. Function code syms that
5651 are really in the library we must leave global to prevent the
5652 linker dragging in a definition from a static library. */
5653 force_local
= (!fh
->elf
.def_regular
5655 || !fdh
->elf
.def_regular
5656 || fdh
->elf
.forced_local
);
5657 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5662 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5663 this hook to a) provide some gcc support functions, and b) transfer
5664 dynamic linking information gathered so far on function code symbol
5665 entries, to their corresponding function descriptor symbol entries. */
5668 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5669 struct bfd_link_info
*info
)
5671 struct ppc_link_hash_table
*htab
;
5673 const struct sfpr_def_parms funcs
[] =
5675 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5676 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5677 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5678 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5679 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5680 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5681 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5682 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
5683 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
5684 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
5685 { "_savevr_", 20, 31, savevr
, savevr_tail
},
5686 { "_restvr_", 20, 31, restvr
, restvr_tail
}
5689 htab
= ppc_hash_table (info
);
5690 if (htab
->sfpr
== NULL
)
5691 /* We don't have any relocs. */
5694 /* Provide any missing _save* and _rest* functions. */
5695 htab
->sfpr
->size
= 0;
5696 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
5697 if (!sfpr_define (info
, &funcs
[i
]))
5700 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
5702 if (htab
->sfpr
->size
== 0)
5703 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
5708 /* Adjust a symbol defined by a dynamic object and referenced by a
5709 regular object. The current definition is in some section of the
5710 dynamic object, but we're not including those sections. We have to
5711 change the definition to something the rest of the link can
5715 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5716 struct elf_link_hash_entry
*h
)
5718 struct ppc_link_hash_table
*htab
;
5720 unsigned int power_of_two
;
5722 htab
= ppc_hash_table (info
);
5724 /* Deal with function syms. */
5725 if (h
->type
== STT_FUNC
5728 /* Clear procedure linkage table information for any symbol that
5729 won't need a .plt entry. */
5730 struct plt_entry
*ent
;
5731 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5732 if (ent
->plt
.refcount
> 0)
5735 || SYMBOL_CALLS_LOCAL (info
, h
)
5736 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5737 && h
->root
.type
== bfd_link_hash_undefweak
))
5739 h
->plt
.plist
= NULL
;
5744 h
->plt
.plist
= NULL
;
5746 /* If this is a weak symbol, and there is a real definition, the
5747 processor independent code will have arranged for us to see the
5748 real definition first, and we can just use the same value. */
5749 if (h
->u
.weakdef
!= NULL
)
5751 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5752 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5753 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5754 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5755 if (ELIMINATE_COPY_RELOCS
)
5756 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5760 /* If we are creating a shared library, we must presume that the
5761 only references to the symbol are via the global offset table.
5762 For such cases we need not do anything here; the relocations will
5763 be handled correctly by relocate_section. */
5767 /* If there are no references to this symbol that do not use the
5768 GOT, we don't need to generate a copy reloc. */
5769 if (!h
->non_got_ref
)
5772 if (ELIMINATE_COPY_RELOCS
)
5774 struct ppc_link_hash_entry
* eh
;
5775 struct ppc_dyn_relocs
*p
;
5777 eh
= (struct ppc_link_hash_entry
*) h
;
5778 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5780 s
= p
->sec
->output_section
;
5781 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5785 /* If we didn't find any dynamic relocs in read-only sections, then
5786 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5794 if (h
->plt
.plist
!= NULL
)
5796 /* We should never get here, but unfortunately there are versions
5797 of gcc out there that improperly (for this ABI) put initialized
5798 function pointers, vtable refs and suchlike in read-only
5799 sections. Allow them to proceed, but warn that this might
5800 break at runtime. */
5801 (*_bfd_error_handler
)
5802 (_("copy reloc against `%s' requires lazy plt linking; "
5803 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5804 h
->root
.root
.string
);
5807 /* This is a reference to a symbol defined by a dynamic object which
5808 is not a function. */
5812 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
5813 h
->root
.root
.string
);
5817 /* We must allocate the symbol in our .dynbss section, which will
5818 become part of the .bss section of the executable. There will be
5819 an entry for this symbol in the .dynsym section. The dynamic
5820 object will contain position independent code, so all references
5821 from the dynamic object to this symbol will go through the global
5822 offset table. The dynamic linker will use the .dynsym entry to
5823 determine the address it must put in the global offset table, so
5824 both the dynamic object and the regular object will refer to the
5825 same memory location for the variable. */
5827 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5828 to copy the initial value out of the dynamic object and into the
5829 runtime process image. We need to remember the offset into the
5830 .rela.bss section we are going to use. */
5831 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5833 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
5837 /* We need to figure out the alignment required for this symbol. I
5838 have no idea how ELF linkers handle this. */
5839 power_of_two
= bfd_log2 (h
->size
);
5840 if (power_of_two
> 4)
5843 /* Apply the required alignment. */
5845 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5846 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
5848 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
5852 /* Define the symbol as being at this point in the section. */
5853 h
->root
.u
.def
.section
= s
;
5854 h
->root
.u
.def
.value
= s
->size
;
5856 /* Increment the section size to make room for the symbol. */
5862 /* If given a function descriptor symbol, hide both the function code
5863 sym and the descriptor. */
5865 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
5866 struct elf_link_hash_entry
*h
,
5867 bfd_boolean force_local
)
5869 struct ppc_link_hash_entry
*eh
;
5870 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
5872 eh
= (struct ppc_link_hash_entry
*) h
;
5873 if (eh
->is_func_descriptor
)
5875 struct ppc_link_hash_entry
*fh
= eh
->oh
;
5880 struct ppc_link_hash_table
*htab
;
5883 /* We aren't supposed to use alloca in BFD because on
5884 systems which do not have alloca the version in libiberty
5885 calls xmalloc, which might cause the program to crash
5886 when it runs out of memory. This function doesn't have a
5887 return status, so there's no way to gracefully return an
5888 error. So cheat. We know that string[-1] can be safely
5889 accessed; It's either a string in an ELF string table,
5890 or allocated in an objalloc structure. */
5892 p
= eh
->elf
.root
.root
.string
- 1;
5895 htab
= ppc_hash_table (info
);
5896 fh
= (struct ppc_link_hash_entry
*)
5897 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5900 /* Unfortunately, if it so happens that the string we were
5901 looking for was allocated immediately before this string,
5902 then we overwrote the string terminator. That's the only
5903 reason the lookup should fail. */
5906 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
5907 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
5909 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
5910 fh
= (struct ppc_link_hash_entry
*)
5911 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5920 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5925 get_sym_h (struct elf_link_hash_entry
**hp
,
5926 Elf_Internal_Sym
**symp
,
5929 Elf_Internal_Sym
**locsymsp
,
5930 unsigned long r_symndx
,
5933 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5935 if (r_symndx
>= symtab_hdr
->sh_info
)
5937 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5938 struct elf_link_hash_entry
*h
;
5940 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5941 while (h
->root
.type
== bfd_link_hash_indirect
5942 || h
->root
.type
== bfd_link_hash_warning
)
5943 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5951 if (symsecp
!= NULL
)
5953 asection
*symsec
= NULL
;
5954 if (h
->root
.type
== bfd_link_hash_defined
5955 || h
->root
.type
== bfd_link_hash_defweak
)
5956 symsec
= h
->root
.u
.def
.section
;
5960 if (tls_maskp
!= NULL
)
5962 struct ppc_link_hash_entry
*eh
;
5964 eh
= (struct ppc_link_hash_entry
*) h
;
5965 *tls_maskp
= &eh
->tls_mask
;
5970 Elf_Internal_Sym
*sym
;
5971 Elf_Internal_Sym
*locsyms
= *locsymsp
;
5973 if (locsyms
== NULL
)
5975 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5976 if (locsyms
== NULL
)
5977 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5978 symtab_hdr
->sh_info
,
5979 0, NULL
, NULL
, NULL
);
5980 if (locsyms
== NULL
)
5982 *locsymsp
= locsyms
;
5984 sym
= locsyms
+ r_symndx
;
5992 if (symsecp
!= NULL
)
5994 asection
*symsec
= NULL
;
5995 if ((sym
->st_shndx
!= SHN_UNDEF
5996 && sym
->st_shndx
< SHN_LORESERVE
)
5997 || sym
->st_shndx
> SHN_HIRESERVE
)
5998 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6002 if (tls_maskp
!= NULL
)
6004 struct got_entry
**lgot_ents
;
6008 lgot_ents
= elf_local_got_ents (ibfd
);
6009 if (lgot_ents
!= NULL
)
6011 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
6012 tls_mask
= &lgot_masks
[r_symndx
];
6014 *tls_maskp
= tls_mask
;
6020 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6021 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6022 type suitable for optimization, and 1 otherwise. */
6025 get_tls_mask (char **tls_maskp
, unsigned long *toc_symndx
,
6026 Elf_Internal_Sym
**locsymsp
,
6027 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
6029 unsigned long r_symndx
;
6031 struct elf_link_hash_entry
*h
;
6032 Elf_Internal_Sym
*sym
;
6036 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6037 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6040 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6042 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
6045 /* Look inside a TOC section too. */
6048 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6049 off
= h
->root
.u
.def
.value
;
6052 off
= sym
->st_value
;
6053 off
+= rel
->r_addend
;
6054 BFD_ASSERT (off
% 8 == 0);
6055 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
6056 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
6057 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6059 if (toc_symndx
!= NULL
)
6060 *toc_symndx
= r_symndx
;
6062 || ((h
->root
.type
== bfd_link_hash_defined
6063 || h
->root
.type
== bfd_link_hash_defweak
)
6064 && !h
->def_dynamic
))
6065 && (next_r
== -1 || next_r
== -2))
6070 /* Adjust all global syms defined in opd sections. In gcc generated
6071 code for the old ABI, these will already have been done. */
6074 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6076 struct ppc_link_hash_entry
*eh
;
6080 if (h
->root
.type
== bfd_link_hash_indirect
)
6083 if (h
->root
.type
== bfd_link_hash_warning
)
6084 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6086 if (h
->root
.type
!= bfd_link_hash_defined
6087 && h
->root
.type
!= bfd_link_hash_defweak
)
6090 eh
= (struct ppc_link_hash_entry
*) h
;
6091 if (eh
->adjust_done
)
6094 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6095 opd_adjust
= get_opd_info (sym_sec
);
6096 if (opd_adjust
!= NULL
)
6098 long adjust
= opd_adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6101 /* This entry has been deleted. */
6102 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->u
.deleted_section
;
6105 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6106 if (elf_discarded_section (dsec
))
6108 ppc64_elf_tdata (sym_sec
->owner
)->u
.deleted_section
= dsec
;
6112 eh
->elf
.root
.u
.def
.value
= 0;
6113 eh
->elf
.root
.u
.def
.section
= dsec
;
6116 eh
->elf
.root
.u
.def
.value
+= adjust
;
6117 eh
->adjust_done
= 1;
6122 /* Handles decrementing dynamic reloc counts for the reloc specified by
6123 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6124 have already been determined. */
6127 dec_dynrel_count (bfd_vma r_info
,
6129 struct bfd_link_info
*info
,
6130 Elf_Internal_Sym
**local_syms
,
6131 struct elf_link_hash_entry
*h
,
6134 enum elf_ppc64_reloc_type r_type
;
6135 struct ppc_dyn_relocs
*p
;
6136 struct ppc_dyn_relocs
**pp
;
6138 /* Can this reloc be dynamic? This switch, and later tests here
6139 should be kept in sync with the code in check_relocs. */
6140 r_type
= ELF64_R_TYPE (r_info
);
6146 case R_PPC64_TPREL16
:
6147 case R_PPC64_TPREL16_LO
:
6148 case R_PPC64_TPREL16_HI
:
6149 case R_PPC64_TPREL16_HA
:
6150 case R_PPC64_TPREL16_DS
:
6151 case R_PPC64_TPREL16_LO_DS
:
6152 case R_PPC64_TPREL16_HIGHER
:
6153 case R_PPC64_TPREL16_HIGHERA
:
6154 case R_PPC64_TPREL16_HIGHEST
:
6155 case R_PPC64_TPREL16_HIGHESTA
:
6159 case R_PPC64_TPREL64
:
6160 case R_PPC64_DTPMOD64
:
6161 case R_PPC64_DTPREL64
:
6162 case R_PPC64_ADDR64
:
6166 case R_PPC64_ADDR14
:
6167 case R_PPC64_ADDR14_BRNTAKEN
:
6168 case R_PPC64_ADDR14_BRTAKEN
:
6169 case R_PPC64_ADDR16
:
6170 case R_PPC64_ADDR16_DS
:
6171 case R_PPC64_ADDR16_HA
:
6172 case R_PPC64_ADDR16_HI
:
6173 case R_PPC64_ADDR16_HIGHER
:
6174 case R_PPC64_ADDR16_HIGHERA
:
6175 case R_PPC64_ADDR16_HIGHEST
:
6176 case R_PPC64_ADDR16_HIGHESTA
:
6177 case R_PPC64_ADDR16_LO
:
6178 case R_PPC64_ADDR16_LO_DS
:
6179 case R_PPC64_ADDR24
:
6180 case R_PPC64_ADDR32
:
6181 case R_PPC64_UADDR16
:
6182 case R_PPC64_UADDR32
:
6183 case R_PPC64_UADDR64
:
6188 if (local_syms
!= NULL
)
6190 unsigned long r_symndx
;
6191 Elf_Internal_Sym
*sym
;
6192 bfd
*ibfd
= sec
->owner
;
6194 r_symndx
= ELF64_R_SYM (r_info
);
6195 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6200 && (MUST_BE_DYN_RELOC (r_type
)
6203 || h
->root
.type
== bfd_link_hash_defweak
6204 || !h
->def_regular
))))
6205 || (ELIMINATE_COPY_RELOCS
6208 && (h
->root
.type
== bfd_link_hash_defweak
6209 || !h
->def_regular
)))
6215 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6218 if (sym_sec
!= NULL
)
6220 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6221 pp
= (struct ppc_dyn_relocs
**) vpp
;
6225 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6226 pp
= (struct ppc_dyn_relocs
**) vpp
;
6229 /* elf_gc_sweep may have already removed all dyn relocs associated
6230 with local syms for a given section. Don't report a dynreloc
6236 while ((p
= *pp
) != NULL
)
6240 if (!MUST_BE_DYN_RELOC (r_type
))
6250 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6252 bfd_set_error (bfd_error_bad_value
);
6256 /* Remove unused Official Procedure Descriptor entries. Currently we
6257 only remove those associated with functions in discarded link-once
6258 sections, or weakly defined functions that have been overridden. It
6259 would be possible to remove many more entries for statically linked
6263 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
6264 bfd_boolean no_opd_opt
,
6265 bfd_boolean non_overlapping
)
6268 bfd_boolean some_edited
= FALSE
;
6269 asection
*need_pad
= NULL
;
6271 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6274 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6275 Elf_Internal_Shdr
*symtab_hdr
;
6276 Elf_Internal_Sym
*local_syms
;
6277 struct elf_link_hash_entry
**sym_hashes
;
6281 bfd_boolean need_edit
, add_aux_fields
;
6282 bfd_size_type cnt_16b
= 0;
6284 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6285 if (sec
== NULL
|| sec
->size
== 0)
6288 amt
= sec
->size
* sizeof (long) / 8;
6289 opd_adjust
= get_opd_info (sec
);
6290 if (opd_adjust
== NULL
)
6292 /* check_relocs hasn't been called. Must be a ld -r link
6293 or --just-symbols object. */
6294 opd_adjust
= bfd_alloc (obfd
, amt
);
6295 if (opd_adjust
== NULL
)
6297 ppc64_elf_section_data (sec
)->opd
.adjust
= opd_adjust
;
6299 memset (opd_adjust
, 0, amt
);
6304 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6307 if (sec
->output_section
== bfd_abs_section_ptr
)
6310 /* Look through the section relocs. */
6311 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6315 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6316 sym_hashes
= elf_sym_hashes (ibfd
);
6318 /* Read the relocations. */
6319 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6321 if (relstart
== NULL
)
6324 /* First run through the relocs to check they are sane, and to
6325 determine whether we need to edit this opd section. */
6329 relend
= relstart
+ sec
->reloc_count
;
6330 for (rel
= relstart
; rel
< relend
; )
6332 enum elf_ppc64_reloc_type r_type
;
6333 unsigned long r_symndx
;
6335 struct elf_link_hash_entry
*h
;
6336 Elf_Internal_Sym
*sym
;
6338 /* .opd contains a regular array of 16 or 24 byte entries. We're
6339 only interested in the reloc pointing to a function entry
6341 if (rel
->r_offset
!= offset
6342 || rel
+ 1 >= relend
6343 || (rel
+ 1)->r_offset
!= offset
+ 8)
6345 /* If someone messes with .opd alignment then after a
6346 "ld -r" we might have padding in the middle of .opd.
6347 Also, there's nothing to prevent someone putting
6348 something silly in .opd with the assembler. No .opd
6349 optimization for them! */
6351 (*_bfd_error_handler
)
6352 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6357 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6358 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6360 (*_bfd_error_handler
)
6361 (_("%B: unexpected reloc type %u in .opd section"),
6367 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6368 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6372 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6374 const char *sym_name
;
6376 sym_name
= h
->root
.root
.string
;
6378 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
6381 (*_bfd_error_handler
)
6382 (_("%B: undefined sym `%s' in .opd section"),
6388 /* opd entries are always for functions defined in the
6389 current input bfd. If the symbol isn't defined in the
6390 input bfd, then we won't be using the function in this
6391 bfd; It must be defined in a linkonce section in another
6392 bfd, or is weak. It's also possible that we are
6393 discarding the function due to a linker script /DISCARD/,
6394 which we test for via the output_section. */
6395 if (sym_sec
->owner
!= ibfd
6396 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6401 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6403 if (sec
->size
== offset
+ 24)
6408 if (rel
== relend
&& sec
->size
== offset
+ 16)
6416 if (rel
->r_offset
== offset
+ 24)
6418 else if (rel
->r_offset
!= offset
+ 16)
6420 else if (rel
+ 1 < relend
6421 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6422 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6427 else if (rel
+ 2 < relend
6428 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6429 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6438 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6440 if (need_edit
|| add_aux_fields
)
6442 Elf_Internal_Rela
*write_rel
;
6443 bfd_byte
*rptr
, *wptr
;
6444 bfd_byte
*new_contents
= NULL
;
6448 /* This seems a waste of time as input .opd sections are all
6449 zeros as generated by gcc, but I suppose there's no reason
6450 this will always be so. We might start putting something in
6451 the third word of .opd entries. */
6452 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6455 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6460 if (local_syms
!= NULL
6461 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6463 if (elf_section_data (sec
)->relocs
!= relstart
)
6467 sec
->contents
= loc
;
6468 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6471 elf_section_data (sec
)->relocs
= relstart
;
6473 new_contents
= sec
->contents
;
6476 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6477 if (new_contents
== NULL
)
6481 wptr
= new_contents
;
6482 rptr
= sec
->contents
;
6484 write_rel
= relstart
;
6488 for (rel
= relstart
; rel
< relend
; rel
++)
6490 unsigned long r_symndx
;
6492 struct elf_link_hash_entry
*h
;
6493 Elf_Internal_Sym
*sym
;
6495 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6496 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6500 if (rel
->r_offset
== offset
)
6502 struct ppc_link_hash_entry
*fdh
= NULL
;
6504 /* See if the .opd entry is full 24 byte or
6505 16 byte (with fd_aux entry overlapped with next
6508 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6509 || (rel
+ 3 < relend
6510 && rel
[2].r_offset
== offset
+ 16
6511 && rel
[3].r_offset
== offset
+ 24
6512 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6513 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6517 && h
->root
.root
.string
[0] == '.')
6519 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6520 ppc_hash_table (info
));
6522 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
6523 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6527 skip
= (sym_sec
->owner
!= ibfd
6528 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6531 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6533 /* Arrange for the function descriptor sym
6535 fdh
->elf
.root
.u
.def
.value
= 0;
6536 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6538 opd_adjust
[rel
->r_offset
/ 8] = -1;
6542 /* We'll be keeping this opd entry. */
6546 /* Redefine the function descriptor symbol to
6547 this location in the opd section. It is
6548 necessary to update the value here rather
6549 than using an array of adjustments as we do
6550 for local symbols, because various places
6551 in the generic ELF code use the value
6552 stored in u.def.value. */
6553 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6554 fdh
->adjust_done
= 1;
6557 /* Local syms are a bit tricky. We could
6558 tweak them as they can be cached, but
6559 we'd need to look through the local syms
6560 for the function descriptor sym which we
6561 don't have at the moment. So keep an
6562 array of adjustments. */
6563 opd_adjust
[rel
->r_offset
/ 8]
6564 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6567 memcpy (wptr
, rptr
, opd_ent_size
);
6568 wptr
+= opd_ent_size
;
6569 if (add_aux_fields
&& opd_ent_size
== 16)
6571 memset (wptr
, '\0', 8);
6575 rptr
+= opd_ent_size
;
6576 offset
+= opd_ent_size
;
6582 && !info
->relocatable
6583 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
6589 /* We need to adjust any reloc offsets to point to the
6590 new opd entries. While we're at it, we may as well
6591 remove redundant relocs. */
6592 rel
->r_offset
+= opd_adjust
[(offset
- opd_ent_size
) / 8];
6593 if (write_rel
!= rel
)
6594 memcpy (write_rel
, rel
, sizeof (*rel
));
6599 sec
->size
= wptr
- new_contents
;
6600 sec
->reloc_count
= write_rel
- relstart
;
6603 free (sec
->contents
);
6604 sec
->contents
= new_contents
;
6607 /* Fudge the size too, as this is used later in
6608 elf_bfd_final_link if we are emitting relocs. */
6609 elf_section_data (sec
)->rel_hdr
.sh_size
6610 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6611 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6614 else if (elf_section_data (sec
)->relocs
!= relstart
)
6617 if (local_syms
!= NULL
6618 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6620 if (!info
->keep_memory
)
6623 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6628 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6630 /* If we are doing a final link and the last .opd entry is just 16 byte
6631 long, add a 8 byte padding after it. */
6632 if (need_pad
!= NULL
&& !info
->relocatable
)
6636 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6638 BFD_ASSERT (need_pad
->size
> 0);
6640 p
= bfd_malloc (need_pad
->size
+ 8);
6644 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6645 p
, 0, need_pad
->size
))
6648 need_pad
->contents
= p
;
6649 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6653 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6657 need_pad
->contents
= p
;
6660 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6661 need_pad
->size
+= 8;
6667 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6670 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6672 struct ppc_link_hash_table
*htab
;
6674 htab
= ppc_hash_table (info
);
6675 if (htab
->tls_get_addr
!= NULL
)
6677 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr
;
6679 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6680 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6681 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6683 htab
->tls_get_addr
= h
;
6685 if (htab
->tls_get_addr_fd
== NULL
6687 && h
->oh
->is_func_descriptor
6688 && (h
->oh
->elf
.root
.type
== bfd_link_hash_defined
6689 || h
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
6690 htab
->tls_get_addr_fd
= h
->oh
;
6693 if (htab
->tls_get_addr_fd
!= NULL
)
6695 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr_fd
;
6697 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6698 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6699 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6701 htab
->tls_get_addr_fd
= h
;
6704 return _bfd_elf_tls_setup (obfd
, info
);
6707 /* Run through all the TLS relocs looking for optimization
6708 opportunities. The linker has been hacked (see ppc64elf.em) to do
6709 a preliminary section layout so that we know the TLS segment
6710 offsets. We can't optimize earlier because some optimizations need
6711 to know the tp offset, and we need to optimize before allocating
6712 dynamic relocations. */
6715 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6719 struct ppc_link_hash_table
*htab
;
6721 if (info
->relocatable
|| info
->shared
)
6724 htab
= ppc_hash_table (info
);
6725 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6727 Elf_Internal_Sym
*locsyms
= NULL
;
6728 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
6729 unsigned char *toc_ref
= NULL
;
6731 /* Look at all the sections for this file, with TOC last. */
6732 for (sec
= (ibfd
->sections
== toc
&& toc
&& toc
->next
? toc
->next
6735 sec
= (sec
== toc
? NULL
6736 : sec
->next
== NULL
? toc
6737 : sec
->next
== toc
&& toc
->next
? toc
->next
6739 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
6741 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6742 int expecting_tls_get_addr
;
6743 long toc_ref_index
= 0;
6745 /* Read the relocations. */
6746 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6748 if (relstart
== NULL
)
6751 expecting_tls_get_addr
= 0;
6752 relend
= relstart
+ sec
->reloc_count
;
6753 for (rel
= relstart
; rel
< relend
; rel
++)
6755 enum elf_ppc64_reloc_type r_type
;
6756 unsigned long r_symndx
;
6757 struct elf_link_hash_entry
*h
;
6758 Elf_Internal_Sym
*sym
;
6761 char tls_set
, tls_clear
, tls_type
= 0;
6763 bfd_boolean ok_tprel
, is_local
;
6765 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6766 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
6770 if (elf_section_data (sec
)->relocs
!= relstart
)
6772 if (toc_ref
!= NULL
)
6775 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6776 != (unsigned char *) locsyms
))
6783 if (h
->root
.type
!= bfd_link_hash_defined
6784 && h
->root
.type
!= bfd_link_hash_defweak
)
6786 value
= h
->root
.u
.def
.value
;
6789 /* Symbols referenced by TLS relocs must be of type
6790 STT_TLS. So no need for .opd local sym adjust. */
6791 value
= sym
->st_value
;
6799 value
+= sym_sec
->output_offset
;
6800 value
+= sym_sec
->output_section
->vma
;
6801 value
-= htab
->elf
.tls_sec
->vma
;
6802 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
6803 < (bfd_vma
) 1 << 32);
6806 r_type
= ELF64_R_TYPE (rel
->r_info
);
6809 case R_PPC64_GOT_TLSLD16
:
6810 case R_PPC64_GOT_TLSLD16_LO
:
6811 case R_PPC64_GOT_TLSLD16_HI
:
6812 case R_PPC64_GOT_TLSLD16_HA
:
6813 /* These relocs should never be against a symbol
6814 defined in a shared lib. Leave them alone if
6815 that turns out to be the case. */
6816 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
6823 tls_type
= TLS_TLS
| TLS_LD
;
6824 expecting_tls_get_addr
= 1;
6827 case R_PPC64_GOT_TLSGD16
:
6828 case R_PPC64_GOT_TLSGD16_LO
:
6829 case R_PPC64_GOT_TLSGD16_HI
:
6830 case R_PPC64_GOT_TLSGD16_HA
:
6836 tls_set
= TLS_TLS
| TLS_TPRELGD
;
6838 tls_type
= TLS_TLS
| TLS_GD
;
6839 expecting_tls_get_addr
= 1;
6842 case R_PPC64_GOT_TPREL16_DS
:
6843 case R_PPC64_GOT_TPREL16_LO_DS
:
6844 case R_PPC64_GOT_TPREL16_HI
:
6845 case R_PPC64_GOT_TPREL16_HA
:
6846 expecting_tls_get_addr
= 0;
6851 tls_clear
= TLS_TPREL
;
6852 tls_type
= TLS_TLS
| TLS_TPREL
;
6859 case R_PPC64_REL14_BRTAKEN
:
6860 case R_PPC64_REL14_BRNTAKEN
:
6863 && (h
== &htab
->tls_get_addr
->elf
6864 || h
== &htab
->tls_get_addr_fd
->elf
))
6866 if (!expecting_tls_get_addr
6868 && ((ELF64_R_TYPE (rel
[-1].r_info
)
6870 || (ELF64_R_TYPE (rel
[-1].r_info
)
6871 == R_PPC64_TOC16_LO
)))
6873 /* Check for toc tls entries. */
6877 retval
= get_tls_mask (&toc_tls
, NULL
, &locsyms
,
6881 if (retval
> 1 && toc_tls
!= NULL
)
6883 expecting_tls_get_addr
= 1;
6884 if (toc_ref
!= NULL
)
6885 toc_ref
[toc_ref_index
] = 1;
6889 if (expecting_tls_get_addr
)
6891 struct plt_entry
*ent
;
6892 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
6893 if (ent
->addend
== 0)
6895 if (ent
->plt
.refcount
> 0)
6896 ent
->plt
.refcount
-= 1;
6901 expecting_tls_get_addr
= 0;
6905 case R_PPC64_TOC16_LO
:
6907 expecting_tls_get_addr
= 0;
6908 if (sym_sec
== toc
&& toc
!= NULL
)
6910 /* Mark this toc entry as referenced by a TLS
6911 code sequence. We can do that now in the
6912 case of R_PPC64_TLS, and after checking for
6913 tls_get_addr for the TOC16 relocs. */
6914 if (toc_ref
== NULL
)
6916 toc_ref
= bfd_zmalloc (toc
->size
/ 8);
6917 if (toc_ref
== NULL
)
6921 value
= h
->root
.u
.def
.value
;
6923 value
= sym
->st_value
;
6924 value
+= rel
->r_addend
;
6925 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
6926 toc_ref_index
= value
/ 8;
6927 if (r_type
== R_PPC64_TLS
)
6928 toc_ref
[toc_ref_index
] = 1;
6932 case R_PPC64_TPREL64
:
6933 expecting_tls_get_addr
= 0;
6936 || !toc_ref
[rel
->r_offset
/ 8])
6941 tls_set
= TLS_EXPLICIT
;
6942 tls_clear
= TLS_TPREL
;
6948 case R_PPC64_DTPMOD64
:
6949 expecting_tls_get_addr
= 0;
6952 || !toc_ref
[rel
->r_offset
/ 8])
6954 if (rel
+ 1 < relend
6956 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
6957 && rel
[1].r_offset
== rel
->r_offset
+ 8)
6961 tls_set
= TLS_EXPLICIT
| TLS_GD
;
6964 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
6973 tls_set
= TLS_EXPLICIT
;
6979 expecting_tls_get_addr
= 0;
6983 if ((tls_set
& TLS_EXPLICIT
) == 0)
6985 struct got_entry
*ent
;
6987 /* Adjust got entry for this reloc. */
6991 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
6993 for (; ent
!= NULL
; ent
= ent
->next
)
6994 if (ent
->addend
== rel
->r_addend
6995 && ent
->owner
== ibfd
6996 && ent
->tls_type
== tls_type
)
7003 /* We managed to get rid of a got entry. */
7004 if (ent
->got
.refcount
> 0)
7005 ent
->got
.refcount
-= 1;
7010 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7011 we'll lose one or two dyn relocs. */
7012 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7016 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7018 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7024 *tls_mask
|= tls_set
;
7025 *tls_mask
&= ~tls_clear
;
7028 if (elf_section_data (sec
)->relocs
!= relstart
)
7032 if (toc_ref
!= NULL
)
7036 && (elf_tdata (ibfd
)->symtab_hdr
.contents
7037 != (unsigned char *) locsyms
))
7039 if (!info
->keep_memory
)
7042 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
7048 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7049 the values of any global symbols in a toc section that has been
7050 edited. Globals in toc sections should be a rarity, so this function
7051 sets a flag if any are found in toc sections other than the one just
7052 edited, so that futher hash table traversals can be avoided. */
7054 struct adjust_toc_info
7057 unsigned long *skip
;
7058 bfd_boolean global_toc_syms
;
7062 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7064 struct ppc_link_hash_entry
*eh
;
7065 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7067 if (h
->root
.type
== bfd_link_hash_indirect
)
7070 if (h
->root
.type
== bfd_link_hash_warning
)
7071 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7073 if (h
->root
.type
!= bfd_link_hash_defined
7074 && h
->root
.type
!= bfd_link_hash_defweak
)
7077 eh
= (struct ppc_link_hash_entry
*) h
;
7078 if (eh
->adjust_done
)
7081 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7083 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
7084 if (skip
!= (unsigned long) -1)
7085 eh
->elf
.root
.u
.def
.value
-= skip
;
7088 (*_bfd_error_handler
)
7089 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
7090 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
7091 eh
->elf
.root
.u
.def
.value
= 0;
7093 eh
->adjust_done
= 1;
7095 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7096 toc_inf
->global_toc_syms
= TRUE
;
7101 /* Examine all relocs referencing .toc sections in order to remove
7102 unused .toc entries. */
7105 ppc64_elf_edit_toc (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
7108 struct adjust_toc_info toc_inf
;
7110 toc_inf
.global_toc_syms
= TRUE
;
7111 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7113 asection
*toc
, *sec
;
7114 Elf_Internal_Shdr
*symtab_hdr
;
7115 Elf_Internal_Sym
*local_syms
;
7116 struct elf_link_hash_entry
**sym_hashes
;
7117 Elf_Internal_Rela
*relstart
, *rel
;
7118 unsigned long *skip
, *drop
;
7119 unsigned char *used
;
7120 unsigned char *keep
, last
, some_unused
;
7122 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7125 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7126 || elf_discarded_section (toc
))
7130 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7131 sym_hashes
= elf_sym_hashes (ibfd
);
7133 /* Look at sections dropped from the final link. */
7136 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7138 if (sec
->reloc_count
== 0
7139 || !elf_discarded_section (sec
)
7140 || get_opd_info (sec
)
7141 || (sec
->flags
& SEC_ALLOC
) == 0
7142 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7145 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7146 if (relstart
== NULL
)
7149 /* Run through the relocs to see which toc entries might be
7151 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7153 enum elf_ppc64_reloc_type r_type
;
7154 unsigned long r_symndx
;
7156 struct elf_link_hash_entry
*h
;
7157 Elf_Internal_Sym
*sym
;
7160 r_type
= ELF64_R_TYPE (rel
->r_info
);
7167 case R_PPC64_TOC16_LO
:
7168 case R_PPC64_TOC16_HI
:
7169 case R_PPC64_TOC16_HA
:
7170 case R_PPC64_TOC16_DS
:
7171 case R_PPC64_TOC16_LO_DS
:
7175 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7176 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7184 val
= h
->root
.u
.def
.value
;
7186 val
= sym
->st_value
;
7187 val
+= rel
->r_addend
;
7189 if (val
>= toc
->size
)
7192 /* Anything in the toc ought to be aligned to 8 bytes.
7193 If not, don't mark as unused. */
7199 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
7207 if (elf_section_data (sec
)->relocs
!= relstart
)
7214 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
7218 if (local_syms
!= NULL
7219 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7223 && elf_section_data (sec
)->relocs
!= relstart
)
7230 /* Now check all kept sections that might reference the toc.
7231 Check the toc itself last. */
7232 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
7235 sec
= (sec
== toc
? NULL
7236 : sec
->next
== NULL
? toc
7237 : sec
->next
== toc
&& toc
->next
? toc
->next
7242 if (sec
->reloc_count
== 0
7243 || elf_discarded_section (sec
)
7244 || get_opd_info (sec
)
7245 || (sec
->flags
& SEC_ALLOC
) == 0
7246 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7249 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
7250 if (relstart
== NULL
)
7253 /* Mark toc entries referenced as used. */
7256 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7258 enum elf_ppc64_reloc_type r_type
;
7259 unsigned long r_symndx
;
7261 struct elf_link_hash_entry
*h
;
7262 Elf_Internal_Sym
*sym
;
7265 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 /* In case we're taking addresses of toc entries. */
7275 case R_PPC64_ADDR64
:
7282 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7283 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7294 val
= h
->root
.u
.def
.value
;
7296 val
= sym
->st_value
;
7297 val
+= rel
->r_addend
;
7299 if (val
>= toc
->size
)
7302 /* For the toc section, we only mark as used if
7303 this entry itself isn't unused. */
7306 && (used
[rel
->r_offset
>> 3]
7307 || !skip
[rel
->r_offset
>> 3]))
7308 /* Do all the relocs again, to catch reference
7317 /* Merge the used and skip arrays. Assume that TOC
7318 doublewords not appearing as either used or unused belong
7319 to to an entry more than one doubleword in size. */
7320 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
7321 drop
< skip
+ (toc
->size
+ 7) / 8;
7342 bfd_byte
*contents
, *src
;
7345 /* Shuffle the toc contents, and at the same time convert the
7346 skip array from booleans into offsets. */
7347 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
7350 elf_section_data (toc
)->this_hdr
.contents
= contents
;
7352 for (src
= contents
, off
= 0, drop
= skip
;
7353 src
< contents
+ toc
->size
;
7358 *drop
= (unsigned long) -1;
7364 memcpy (src
- off
, src
, 8);
7367 toc
->rawsize
= toc
->size
;
7368 toc
->size
= src
- contents
- off
;
7370 if (toc
->reloc_count
!= 0)
7372 Elf_Internal_Rela
*wrel
;
7375 /* Read toc relocs. */
7376 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
7378 if (relstart
== NULL
)
7381 /* Remove unused toc relocs, and adjust those we keep. */
7383 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
7384 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
7386 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
7387 wrel
->r_info
= rel
->r_info
;
7388 wrel
->r_addend
= rel
->r_addend
;
7391 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
7392 &local_syms
, NULL
, NULL
))
7395 toc
->reloc_count
= wrel
- relstart
;
7396 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
7397 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
7398 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
7401 /* Adjust addends for relocs against the toc section sym. */
7402 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7404 if (sec
->reloc_count
== 0
7405 || elf_discarded_section (sec
))
7408 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7410 if (relstart
== NULL
)
7413 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7415 enum elf_ppc64_reloc_type r_type
;
7416 unsigned long r_symndx
;
7418 struct elf_link_hash_entry
*h
;
7419 Elf_Internal_Sym
*sym
;
7421 r_type
= ELF64_R_TYPE (rel
->r_info
);
7428 case R_PPC64_TOC16_LO
:
7429 case R_PPC64_TOC16_HI
:
7430 case R_PPC64_TOC16_HA
:
7431 case R_PPC64_TOC16_DS
:
7432 case R_PPC64_TOC16_LO_DS
:
7433 case R_PPC64_ADDR64
:
7437 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7438 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7442 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
7445 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
7449 /* We shouldn't have local or global symbols defined in the TOC,
7450 but handle them anyway. */
7451 if (local_syms
!= NULL
)
7453 Elf_Internal_Sym
*sym
;
7455 for (sym
= local_syms
;
7456 sym
< local_syms
+ symtab_hdr
->sh_info
;
7458 if (sym
->st_shndx
!= SHN_UNDEF
7459 && (sym
->st_shndx
< SHN_LORESERVE
7460 || sym
->st_shndx
> SHN_HIRESERVE
)
7461 && sym
->st_value
!= 0
7462 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
7464 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
7465 sym
->st_value
-= skip
[sym
->st_value
>> 3];
7468 (*_bfd_error_handler
)
7469 (_("%s defined in removed toc entry"),
7470 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7473 sym
->st_shndx
= SHN_ABS
;
7475 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7479 /* Finally, adjust any global syms defined in the toc. */
7480 if (toc_inf
.global_toc_syms
)
7483 toc_inf
.skip
= skip
;
7484 toc_inf
.global_toc_syms
= FALSE
;
7485 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
7490 if (local_syms
!= NULL
7491 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7493 if (!info
->keep_memory
)
7496 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7504 /* Allocate space in .plt, .got and associated reloc sections for
7508 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7510 struct bfd_link_info
*info
;
7511 struct ppc_link_hash_table
*htab
;
7513 struct ppc_link_hash_entry
*eh
;
7514 struct ppc_dyn_relocs
*p
;
7515 struct got_entry
*gent
;
7517 if (h
->root
.type
== bfd_link_hash_indirect
)
7520 if (h
->root
.type
== bfd_link_hash_warning
)
7521 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7523 info
= (struct bfd_link_info
*) inf
;
7524 htab
= ppc_hash_table (info
);
7526 if (htab
->elf
.dynamic_sections_created
7528 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
7530 struct plt_entry
*pent
;
7531 bfd_boolean doneone
= FALSE
;
7532 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7533 if (pent
->plt
.refcount
> 0)
7535 /* If this is the first .plt entry, make room for the special
7539 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
7541 pent
->plt
.offset
= s
->size
;
7543 /* Make room for this entry. */
7544 s
->size
+= PLT_ENTRY_SIZE
;
7546 /* Make room for the .glink code. */
7549 s
->size
+= GLINK_CALL_STUB_SIZE
;
7550 /* We need bigger stubs past index 32767. */
7551 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
7555 /* We also need to make an entry in the .rela.plt section. */
7557 s
->size
+= sizeof (Elf64_External_Rela
);
7561 pent
->plt
.offset
= (bfd_vma
) -1;
7564 h
->plt
.plist
= NULL
;
7570 h
->plt
.plist
= NULL
;
7574 eh
= (struct ppc_link_hash_entry
*) h
;
7575 /* Run through the TLS GD got entries first if we're changing them
7577 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
7578 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7579 if (gent
->got
.refcount
> 0
7580 && (gent
->tls_type
& TLS_GD
) != 0)
7582 /* This was a GD entry that has been converted to TPREL. If
7583 there happens to be a TPREL entry we can use that one. */
7584 struct got_entry
*ent
;
7585 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
7586 if (ent
->got
.refcount
> 0
7587 && (ent
->tls_type
& TLS_TPREL
) != 0
7588 && ent
->addend
== gent
->addend
7589 && ent
->owner
== gent
->owner
)
7591 gent
->got
.refcount
= 0;
7595 /* If not, then we'll be using our own TPREL entry. */
7596 if (gent
->got
.refcount
!= 0)
7597 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
7600 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7601 if (gent
->got
.refcount
> 0)
7605 /* Make sure this symbol is output as a dynamic symbol.
7606 Undefined weak syms won't yet be marked as dynamic,
7607 nor will all TLS symbols. */
7608 if (h
->dynindx
== -1
7609 && !h
->forced_local
)
7611 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7615 if ((gent
->tls_type
& TLS_LD
) != 0
7618 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
7622 s
= ppc64_elf_tdata (gent
->owner
)->got
;
7623 gent
->got
.offset
= s
->size
;
7625 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
7626 dyn
= htab
->elf
.dynamic_sections_created
;
7628 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
7629 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7630 || h
->root
.type
!= bfd_link_hash_undefweak
))
7631 ppc64_elf_tdata (gent
->owner
)->relgot
->size
7632 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
7633 ? 2 * sizeof (Elf64_External_Rela
)
7634 : sizeof (Elf64_External_Rela
));
7637 gent
->got
.offset
= (bfd_vma
) -1;
7639 if (eh
->dyn_relocs
== NULL
)
7642 /* In the shared -Bsymbolic case, discard space allocated for
7643 dynamic pc-relative relocs against symbols which turn out to be
7644 defined in regular objects. For the normal shared case, discard
7645 space for relocs that have become local due to symbol visibility
7650 /* Relocs that use pc_count are those that appear on a call insn,
7651 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7652 generated via assembly. We want calls to protected symbols to
7653 resolve directly to the function rather than going via the plt.
7654 If people want function pointer comparisons to work as expected
7655 then they should avoid writing weird assembly. */
7656 if (SYMBOL_CALLS_LOCAL (info
, h
))
7658 struct ppc_dyn_relocs
**pp
;
7660 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
7662 p
->count
-= p
->pc_count
;
7671 /* Also discard relocs on undefined weak syms with non-default
7673 if (eh
->dyn_relocs
!= NULL
7674 && h
->root
.type
== bfd_link_hash_undefweak
)
7676 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
7677 eh
->dyn_relocs
= NULL
;
7679 /* Make sure this symbol is output as a dynamic symbol.
7680 Undefined weak syms won't yet be marked as dynamic. */
7681 else if (h
->dynindx
== -1
7682 && !h
->forced_local
)
7684 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7689 else if (ELIMINATE_COPY_RELOCS
)
7691 /* For the non-shared case, discard space for relocs against
7692 symbols which turn out to need copy relocs or are not
7699 /* Make sure this symbol is output as a dynamic symbol.
7700 Undefined weak syms won't yet be marked as dynamic. */
7701 if (h
->dynindx
== -1
7702 && !h
->forced_local
)
7704 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7708 /* If that succeeded, we know we'll be keeping all the
7710 if (h
->dynindx
!= -1)
7714 eh
->dyn_relocs
= NULL
;
7719 /* Finally, allocate space. */
7720 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7722 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
7723 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7729 /* Find any dynamic relocs that apply to read-only sections. */
7732 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7734 struct ppc_link_hash_entry
*eh
;
7735 struct ppc_dyn_relocs
*p
;
7737 if (h
->root
.type
== bfd_link_hash_warning
)
7738 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7740 eh
= (struct ppc_link_hash_entry
*) h
;
7741 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7743 asection
*s
= p
->sec
->output_section
;
7745 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7747 struct bfd_link_info
*info
= inf
;
7749 info
->flags
|= DF_TEXTREL
;
7751 /* Not an error, just cut short the traversal. */
7758 /* Set the sizes of the dynamic sections. */
7761 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
7762 struct bfd_link_info
*info
)
7764 struct ppc_link_hash_table
*htab
;
7770 htab
= ppc_hash_table (info
);
7771 dynobj
= htab
->elf
.dynobj
;
7775 if (htab
->elf
.dynamic_sections_created
)
7777 /* Set the contents of the .interp section to the interpreter. */
7778 if (info
->executable
)
7780 s
= bfd_get_section_by_name (dynobj
, ".interp");
7783 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
7784 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
7788 /* Set up .got offsets for local syms, and space for local dynamic
7790 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7792 struct got_entry
**lgot_ents
;
7793 struct got_entry
**end_lgot_ents
;
7795 bfd_size_type locsymcount
;
7796 Elf_Internal_Shdr
*symtab_hdr
;
7799 if (!is_ppc64_elf_target (ibfd
->xvec
))
7802 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
7804 s
= ppc64_elf_tdata (ibfd
)->got
;
7805 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7809 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7810 srel
->size
+= sizeof (Elf64_External_Rela
);
7814 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
7816 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
7818 struct ppc_dyn_relocs
*p
;
7820 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
7822 if (!bfd_is_abs_section (p
->sec
)
7823 && bfd_is_abs_section (p
->sec
->output_section
))
7825 /* Input section has been discarded, either because
7826 it is a copy of a linkonce section or due to
7827 linker script /DISCARD/, so we'll be discarding
7830 else if (p
->count
!= 0)
7832 srel
= elf_section_data (p
->sec
)->sreloc
;
7833 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7834 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
7835 info
->flags
|= DF_TEXTREL
;
7840 lgot_ents
= elf_local_got_ents (ibfd
);
7844 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7845 locsymcount
= symtab_hdr
->sh_info
;
7846 end_lgot_ents
= lgot_ents
+ locsymcount
;
7847 lgot_masks
= (char *) end_lgot_ents
;
7848 s
= ppc64_elf_tdata (ibfd
)->got
;
7849 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7850 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
7852 struct got_entry
*ent
;
7854 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
7855 if (ent
->got
.refcount
> 0)
7857 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
7859 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
7861 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7864 srel
->size
+= sizeof (Elf64_External_Rela
);
7866 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
7870 ent
->got
.offset
= s
->size
;
7871 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
7875 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
7881 srel
->size
+= sizeof (Elf64_External_Rela
);
7886 ent
->got
.offset
= (bfd_vma
) -1;
7890 /* Allocate global sym .plt and .got entries, and space for global
7891 sym dynamic relocs. */
7892 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
7894 /* We now have determined the sizes of the various dynamic sections.
7895 Allocate memory for them. */
7897 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
7899 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7902 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
7903 /* These haven't been allocated yet; don't strip. */
7905 else if (s
== htab
->got
7908 || s
== htab
->dynbss
)
7910 /* Strip this section if we don't need it; see the
7913 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
7917 if (s
!= htab
->relplt
)
7920 /* We use the reloc_count field as a counter if we need
7921 to copy relocs into the output file. */
7927 /* It's not one of our sections, so don't allocate space. */
7933 /* If we don't need this section, strip it from the
7934 output file. This is mostly to handle .rela.bss and
7935 .rela.plt. We must create both sections in
7936 create_dynamic_sections, because they must be created
7937 before the linker maps input sections to output
7938 sections. The linker does that before
7939 adjust_dynamic_symbol is called, and it is that
7940 function which decides whether anything needs to go
7941 into these sections. */
7942 s
->flags
|= SEC_EXCLUDE
;
7946 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
7949 /* Allocate memory for the section contents. We use bfd_zalloc
7950 here in case unused entries are not reclaimed before the
7951 section's contents are written out. This should not happen,
7952 but this way if it does we get a R_PPC64_NONE reloc in .rela
7953 sections instead of garbage.
7954 We also rely on the section contents being zero when writing
7956 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
7957 if (s
->contents
== NULL
)
7961 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7963 if (!is_ppc64_elf_target (ibfd
->xvec
))
7966 s
= ppc64_elf_tdata (ibfd
)->got
;
7967 if (s
!= NULL
&& s
!= htab
->got
)
7970 s
->flags
|= SEC_EXCLUDE
;
7973 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7974 if (s
->contents
== NULL
)
7978 s
= ppc64_elf_tdata (ibfd
)->relgot
;
7982 s
->flags
|= SEC_EXCLUDE
;
7985 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7986 if (s
->contents
== NULL
)
7994 if (htab
->elf
.dynamic_sections_created
)
7996 /* Add some entries to the .dynamic section. We fill in the
7997 values later, in ppc64_elf_finish_dynamic_sections, but we
7998 must add the entries now so that we get the correct size for
7999 the .dynamic section. The DT_DEBUG entry is filled in by the
8000 dynamic linker and used by the debugger. */
8001 #define add_dynamic_entry(TAG, VAL) \
8002 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8004 if (info
->executable
)
8006 if (!add_dynamic_entry (DT_DEBUG
, 0))
8010 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
8012 if (!add_dynamic_entry (DT_PLTGOT
, 0)
8013 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8014 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
8015 || !add_dynamic_entry (DT_JMPREL
, 0)
8016 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
8022 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
8023 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
8029 if (!add_dynamic_entry (DT_RELA
, 0)
8030 || !add_dynamic_entry (DT_RELASZ
, 0)
8031 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
8034 /* If any dynamic relocs apply to a read-only section,
8035 then we need a DT_TEXTREL entry. */
8036 if ((info
->flags
& DF_TEXTREL
) == 0)
8037 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
8039 if ((info
->flags
& DF_TEXTREL
) != 0)
8041 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8046 #undef add_dynamic_entry
8051 /* Determine the type of stub needed, if any, for a call. */
8053 static inline enum ppc_stub_type
8054 ppc_type_of_stub (asection
*input_sec
,
8055 const Elf_Internal_Rela
*rel
,
8056 struct ppc_link_hash_entry
**hash
,
8057 bfd_vma destination
)
8059 struct ppc_link_hash_entry
*h
= *hash
;
8061 bfd_vma branch_offset
;
8062 bfd_vma max_branch_offset
;
8063 enum elf_ppc64_reloc_type r_type
;
8067 struct ppc_link_hash_entry
*fdh
= h
;
8069 && fdh
->oh
->is_func_descriptor
)
8072 if (fdh
->elf
.dynindx
!= -1)
8074 struct plt_entry
*ent
;
8076 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8077 if (ent
->addend
== rel
->r_addend
8078 && ent
->plt
.offset
!= (bfd_vma
) -1)
8081 return ppc_stub_plt_call
;
8085 /* Here, we know we don't have a plt entry. If we don't have a
8086 either a defined function descriptor or a defined entry symbol
8087 in a regular object file, then it is pointless trying to make
8088 any other type of stub. */
8089 if (!((fdh
->elf
.root
.type
== bfd_link_hash_defined
8090 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8091 && fdh
->elf
.root
.u
.def
.section
->output_section
!= NULL
)
8092 && !((h
->elf
.root
.type
== bfd_link_hash_defined
8093 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
8094 && h
->elf
.root
.u
.def
.section
->output_section
!= NULL
))
8095 return ppc_stub_none
;
8098 /* Determine where the call point is. */
8099 location
= (input_sec
->output_offset
8100 + input_sec
->output_section
->vma
8103 branch_offset
= destination
- location
;
8104 r_type
= ELF64_R_TYPE (rel
->r_info
);
8106 /* Determine if a long branch stub is needed. */
8107 max_branch_offset
= 1 << 25;
8108 if (r_type
!= R_PPC64_REL24
)
8109 max_branch_offset
= 1 << 15;
8111 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
8112 /* We need a stub. Figure out whether a long_branch or plt_branch
8114 return ppc_stub_long_branch
;
8116 return ppc_stub_none
;
8119 /* Build a .plt call stub. */
8121 static inline bfd_byte
*
8122 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
8124 #define PPC_LO(v) ((v) & 0xffff)
8125 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8126 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8128 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
8129 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
8130 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
8131 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
8132 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
8134 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
8135 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
8136 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
8138 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
8139 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
8140 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
8145 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8147 struct ppc_stub_hash_entry
*stub_entry
;
8148 struct ppc_branch_hash_entry
*br_entry
;
8149 struct bfd_link_info
*info
;
8150 struct ppc_link_hash_table
*htab
;
8154 struct plt_entry
*ent
;
8158 /* Massage our args to the form they really have. */
8159 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8162 htab
= ppc_hash_table (info
);
8164 /* Make a note of the offset within the stubs for this entry. */
8165 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
8166 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
8168 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
8169 switch (stub_entry
->stub_type
)
8171 case ppc_stub_long_branch
:
8172 case ppc_stub_long_branch_r2off
:
8173 /* Branches are relative. This is where we are going to. */
8174 off
= dest
= (stub_entry
->target_value
8175 + stub_entry
->target_section
->output_offset
8176 + stub_entry
->target_section
->output_section
->vma
);
8178 /* And this is where we are coming from. */
8179 off
-= (stub_entry
->stub_offset
8180 + stub_entry
->stub_sec
->output_offset
8181 + stub_entry
->stub_sec
->output_section
->vma
);
8183 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
8189 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8190 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8191 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8193 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8195 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8200 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
8202 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8204 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
8205 stub_entry
->root
.string
);
8206 htab
->stub_error
= TRUE
;
8210 if (info
->emitrelocations
)
8212 Elf_Internal_Rela
*relocs
, *r
;
8213 struct bfd_elf_section_data
*elfsec_data
;
8215 elfsec_data
= elf_section_data (stub_entry
->stub_sec
);
8216 relocs
= elfsec_data
->relocs
;
8219 bfd_size_type relsize
;
8220 relsize
= stub_entry
->stub_sec
->reloc_count
* sizeof (*relocs
);
8221 relocs
= bfd_alloc (htab
->stub_bfd
, relsize
);
8224 elfsec_data
->relocs
= relocs
;
8225 elfsec_data
->rel_hdr
.sh_size
= relsize
;
8226 elfsec_data
->rel_hdr
.sh_entsize
= 24;
8227 stub_entry
->stub_sec
->reloc_count
= 0;
8229 r
= relocs
+ stub_entry
->stub_sec
->reloc_count
;
8230 stub_entry
->stub_sec
->reloc_count
+= 1;
8231 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8232 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
8234 if (stub_entry
->h
!= NULL
)
8236 struct elf_link_hash_entry
**hashes
;
8237 unsigned long symndx
;
8238 struct ppc_link_hash_entry
*h
;
8240 hashes
= elf_sym_hashes (htab
->stub_bfd
);
8243 bfd_size_type hsize
;
8245 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
8246 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
8249 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
8250 htab
->stub_globals
= 1;
8252 symndx
= htab
->stub_globals
++;
8254 hashes
[symndx
] = &h
->elf
;
8255 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
8256 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
8258 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
8259 /* H is an opd symbol. The addend must be zero. */
8263 off
= (h
->elf
.root
.u
.def
.value
8264 + h
->elf
.root
.u
.def
.section
->output_offset
8265 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
8272 case ppc_stub_plt_branch
:
8273 case ppc_stub_plt_branch_r2off
:
8274 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8275 stub_entry
->root
.string
+ 9,
8277 if (br_entry
== NULL
)
8279 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
8280 stub_entry
->root
.string
);
8281 htab
->stub_error
= TRUE
;
8285 off
= (stub_entry
->target_value
8286 + stub_entry
->target_section
->output_offset
8287 + stub_entry
->target_section
->output_section
->vma
);
8289 bfd_put_64 (htab
->brlt
->owner
, off
,
8290 htab
->brlt
->contents
+ br_entry
->offset
);
8292 if (htab
->relbrlt
!= NULL
)
8294 /* Create a reloc for the branch lookup table entry. */
8295 Elf_Internal_Rela rela
;
8298 rela
.r_offset
= (br_entry
->offset
8299 + htab
->brlt
->output_offset
8300 + htab
->brlt
->output_section
->vma
);
8301 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8302 rela
.r_addend
= off
;
8304 rl
= htab
->relbrlt
->contents
;
8305 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
8306 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
8309 off
= (br_entry
->offset
8310 + htab
->brlt
->output_offset
8311 + htab
->brlt
->output_section
->vma
8312 - elf_gp (htab
->brlt
->output_section
->owner
)
8313 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8315 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8317 (*_bfd_error_handler
)
8318 (_("linkage table error against `%s'"),
8319 stub_entry
->root
.string
);
8320 bfd_set_error (bfd_error_bad_value
);
8321 htab
->stub_error
= TRUE
;
8326 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
8328 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
8330 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
8337 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8338 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8339 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8341 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
8343 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
8345 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8347 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8351 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
8353 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
8356 case ppc_stub_plt_call
:
8357 /* Do the best we can for shared libraries built without
8358 exporting ".foo" for each "foo". This can happen when symbol
8359 versioning scripts strip all bar a subset of symbols. */
8360 if (stub_entry
->h
->oh
!= NULL
8361 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
8362 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8364 /* Point the symbol at the stub. There may be multiple stubs,
8365 we don't really care; The main thing is to make this sym
8366 defined somewhere. Maybe defining the symbol in the stub
8367 section is a silly idea. If we didn't do this, htab->top_id
8369 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
8370 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
8371 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
8374 /* Now build the stub. */
8376 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8377 if (ent
->addend
== stub_entry
->addend
)
8379 off
= ent
->plt
.offset
;
8382 if (off
>= (bfd_vma
) -2)
8385 off
&= ~ (bfd_vma
) 1;
8386 off
+= (htab
->plt
->output_offset
8387 + htab
->plt
->output_section
->vma
8388 - elf_gp (htab
->plt
->output_section
->owner
)
8389 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8391 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8393 (*_bfd_error_handler
)
8394 (_("linkage table error against `%s'"),
8395 stub_entry
->h
->elf
.root
.root
.string
);
8396 bfd_set_error (bfd_error_bad_value
);
8397 htab
->stub_error
= TRUE
;
8401 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
8410 stub_entry
->stub_sec
->size
+= size
;
8412 if (htab
->emit_stub_syms
)
8414 struct elf_link_hash_entry
*h
;
8417 const char *const stub_str
[] = { "long_branch",
8418 "long_branch_r2off",
8423 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
8424 len2
= strlen (stub_entry
->root
.string
);
8425 name
= bfd_malloc (len1
+ len2
+ 2);
8428 memcpy (name
, stub_entry
->root
.string
, 9);
8429 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
8430 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
8431 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
8434 if (h
->root
.type
== bfd_link_hash_new
)
8436 h
->root
.type
= bfd_link_hash_defined
;
8437 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
8438 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
8441 h
->ref_regular_nonweak
= 1;
8442 h
->forced_local
= 1;
8450 /* As above, but don't actually build the stub. Just bump offset so
8451 we know stub section sizes, and select plt_branch stubs where
8452 long_branch stubs won't do. */
8455 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8457 struct ppc_stub_hash_entry
*stub_entry
;
8458 struct bfd_link_info
*info
;
8459 struct ppc_link_hash_table
*htab
;
8463 /* Massage our args to the form they really have. */
8464 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8467 htab
= ppc_hash_table (info
);
8469 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
8471 struct plt_entry
*ent
;
8473 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8474 if (ent
->addend
== stub_entry
->addend
)
8476 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
8479 if (off
>= (bfd_vma
) -2)
8481 off
+= (htab
->plt
->output_offset
8482 + htab
->plt
->output_section
->vma
8483 - elf_gp (htab
->plt
->output_section
->owner
)
8484 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8486 size
= PLT_CALL_STUB_SIZE
;
8487 if (PPC_HA (off
+ 16) != PPC_HA (off
))
8492 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8494 off
= (stub_entry
->target_value
8495 + stub_entry
->target_section
->output_offset
8496 + stub_entry
->target_section
->output_section
->vma
);
8497 off
-= (stub_entry
->stub_sec
->size
8498 + stub_entry
->stub_sec
->output_offset
8499 + stub_entry
->stub_sec
->output_section
->vma
);
8501 /* Reset the stub type from the plt variant in case we now
8502 can reach with a shorter stub. */
8503 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
8504 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
8507 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8513 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8514 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8516 struct ppc_branch_hash_entry
*br_entry
;
8518 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8519 stub_entry
->root
.string
+ 9,
8521 if (br_entry
== NULL
)
8523 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
8524 stub_entry
->root
.string
);
8525 htab
->stub_error
= TRUE
;
8529 if (br_entry
->iter
!= htab
->stub_iteration
)
8531 br_entry
->iter
= htab
->stub_iteration
;
8532 br_entry
->offset
= htab
->brlt
->size
;
8533 htab
->brlt
->size
+= 8;
8535 if (htab
->relbrlt
!= NULL
)
8536 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
8539 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
8541 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
8545 if (info
->emitrelocations
8546 && (stub_entry
->stub_type
== ppc_stub_long_branch
8547 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
8548 stub_entry
->stub_sec
->reloc_count
+= 1;
8551 stub_entry
->stub_sec
->size
+= size
;
8555 /* Set up various things so that we can make a list of input sections
8556 for each output section included in the link. Returns -1 on error,
8557 0 when no stubs will be needed, and 1 on success. */
8560 ppc64_elf_setup_section_lists (bfd
*output_bfd
,
8561 struct bfd_link_info
*info
,
8565 int top_id
, top_index
, id
;
8567 asection
**input_list
;
8569 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8571 htab
->no_multi_toc
= no_multi_toc
;
8573 if (htab
->brlt
== NULL
)
8576 /* Find the top input section id. */
8577 for (input_bfd
= info
->input_bfds
, top_id
= 3;
8579 input_bfd
= input_bfd
->link_next
)
8581 for (section
= input_bfd
->sections
;
8583 section
= section
->next
)
8585 if (top_id
< section
->id
)
8586 top_id
= section
->id
;
8590 htab
->top_id
= top_id
;
8591 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
8592 htab
->stub_group
= bfd_zmalloc (amt
);
8593 if (htab
->stub_group
== NULL
)
8596 /* Set toc_off for com, und, abs and ind sections. */
8597 for (id
= 0; id
< 3; id
++)
8598 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
8600 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
8602 /* We can't use output_bfd->section_count here to find the top output
8603 section index as some sections may have been removed, and
8604 strip_excluded_output_sections doesn't renumber the indices. */
8605 for (section
= output_bfd
->sections
, top_index
= 0;
8607 section
= section
->next
)
8609 if (top_index
< section
->index
)
8610 top_index
= section
->index
;
8613 htab
->top_index
= top_index
;
8614 amt
= sizeof (asection
*) * (top_index
+ 1);
8615 input_list
= bfd_zmalloc (amt
);
8616 htab
->input_list
= input_list
;
8617 if (input_list
== NULL
)
8623 /* The linker repeatedly calls this function for each TOC input section
8624 and linker generated GOT section. Group input bfds such that the toc
8625 within a group is less than 64k in size. Will break with cute linker
8626 scripts that play games with dot in the output toc section. */
8629 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
8631 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8633 if (!htab
->no_multi_toc
)
8635 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
8636 bfd_vma off
= addr
- htab
->toc_curr
;
8638 if (off
+ isec
->size
> 0x10000)
8639 htab
->toc_curr
= addr
;
8641 elf_gp (isec
->owner
) = (htab
->toc_curr
8642 - elf_gp (isec
->output_section
->owner
)
8647 /* Called after the last call to the above function. */
8650 ppc64_elf_reinit_toc (bfd
*output_bfd
, struct bfd_link_info
*info
)
8652 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8654 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (output_bfd
);
8656 /* toc_curr tracks the TOC offset used for code sections below in
8657 ppc64_elf_next_input_section. Start off at 0x8000. */
8658 htab
->toc_curr
= TOC_BASE_OFF
;
8661 /* No toc references were found in ISEC. If the code in ISEC makes no
8662 calls, then there's no need to use toc adjusting stubs when branching
8663 into ISEC. Actually, indirect calls from ISEC are OK as they will
8664 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8665 needed, and 2 if a cyclical call-graph was found but no other reason
8666 for a stub was detected. If called from the top level, a return of
8667 2 means the same as a return of 0. */
8670 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
8672 Elf_Internal_Rela
*relstart
, *rel
;
8673 Elf_Internal_Sym
*local_syms
;
8675 struct ppc_link_hash_table
*htab
;
8677 /* We know none of our code bearing sections will need toc stubs. */
8678 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
8681 if (isec
->size
== 0)
8684 if (isec
->output_section
== NULL
)
8687 /* Hack for linux kernel. .fixup contains branches, but only back to
8688 the function that hit an exception. */
8689 if (strcmp (isec
->name
, ".fixup") == 0)
8692 if (isec
->reloc_count
== 0)
8695 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
8697 if (relstart
== NULL
)
8700 /* Look for branches to outside of this section. */
8703 htab
= ppc_hash_table (info
);
8704 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
8706 enum elf_ppc64_reloc_type r_type
;
8707 unsigned long r_symndx
;
8708 struct elf_link_hash_entry
*h
;
8709 Elf_Internal_Sym
*sym
;
8715 r_type
= ELF64_R_TYPE (rel
->r_info
);
8716 if (r_type
!= R_PPC64_REL24
8717 && r_type
!= R_PPC64_REL14
8718 && r_type
!= R_PPC64_REL14_BRTAKEN
8719 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8722 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8723 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
8730 /* Calls to dynamic lib functions go through a plt call stub
8731 that uses r2. Branches to undefined symbols might be a call
8732 using old-style dot symbols that can be satisfied by a plt
8733 call into a new-style dynamic library. */
8734 if (sym_sec
== NULL
)
8736 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8739 && eh
->oh
->elf
.plt
.plist
!= NULL
)
8745 /* Ignore other undefined symbols. */
8749 /* Assume branches to other sections not included in the link need
8750 stubs too, to cover -R and absolute syms. */
8751 if (sym_sec
->output_section
== NULL
)
8758 sym_value
= sym
->st_value
;
8761 if (h
->root
.type
!= bfd_link_hash_defined
8762 && h
->root
.type
!= bfd_link_hash_defweak
)
8764 sym_value
= h
->root
.u
.def
.value
;
8766 sym_value
+= rel
->r_addend
;
8768 /* If this branch reloc uses an opd sym, find the code section. */
8769 opd_adjust
= get_opd_info (sym_sec
);
8770 if (opd_adjust
!= NULL
)
8776 adjust
= opd_adjust
[sym
->st_value
/ 8];
8778 /* Assume deleted functions won't ever be called. */
8780 sym_value
+= adjust
;
8783 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
8784 if (dest
== (bfd_vma
) -1)
8789 + sym_sec
->output_offset
8790 + sym_sec
->output_section
->vma
);
8792 /* Ignore branch to self. */
8793 if (sym_sec
== isec
)
8796 /* If the called function uses the toc, we need a stub. */
8797 if (sym_sec
->has_toc_reloc
8798 || sym_sec
->makes_toc_func_call
)
8804 /* Assume any branch that needs a long branch stub might in fact
8805 need a plt_branch stub. A plt_branch stub uses r2. */
8806 else if (dest
- (isec
->output_offset
8807 + isec
->output_section
->vma
8808 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
8814 /* If calling back to a section in the process of being tested, we
8815 can't say for sure that no toc adjusting stubs are needed, so
8816 don't return zero. */
8817 else if (sym_sec
->call_check_in_progress
)
8820 /* Branches to another section that itself doesn't have any TOC
8821 references are OK. Recursively call ourselves to check. */
8822 else if (sym_sec
->id
<= htab
->top_id
8823 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
8827 /* Mark current section as indeterminate, so that other
8828 sections that call back to current won't be marked as
8830 isec
->call_check_in_progress
= 1;
8831 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
8832 isec
->call_check_in_progress
= 0;
8836 /* An error. Exit. */
8840 else if (recur
<= 1)
8842 /* Known result. Mark as checked and set section flag. */
8843 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
8846 sym_sec
->makes_toc_func_call
= 1;
8853 /* Unknown result. Continue checking. */
8859 if (local_syms
!= NULL
8860 && (elf_tdata (isec
->owner
)->symtab_hdr
.contents
8861 != (unsigned char *) local_syms
))
8863 if (elf_section_data (isec
)->relocs
!= relstart
)
8869 /* The linker repeatedly calls this function for each input section,
8870 in the order that input sections are linked into output sections.
8871 Build lists of input sections to determine groupings between which
8872 we may insert linker stubs. */
8875 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
8877 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8879 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
8880 && isec
->output_section
->index
<= htab
->top_index
)
8882 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
8883 /* Steal the link_sec pointer for our list. */
8884 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8885 /* This happens to make the list in reverse order,
8886 which is what we want. */
8887 PREV_SEC (isec
) = *list
;
8891 if (htab
->multi_toc_needed
)
8893 /* If a code section has a function that uses the TOC then we need
8894 to use the right TOC (obviously). Also, make sure that .opd gets
8895 the correct TOC value for R_PPC64_TOC relocs that don't have or
8896 can't find their function symbol (shouldn't ever happen now). */
8897 if (isec
->has_toc_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
8899 if (elf_gp (isec
->owner
) != 0)
8900 htab
->toc_curr
= elf_gp (isec
->owner
);
8902 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
8904 int ret
= toc_adjusting_stub_needed (info
, isec
);
8908 isec
->makes_toc_func_call
= ret
& 1;
8912 /* Functions that don't use the TOC can belong in any TOC group.
8913 Use the last TOC base. This happens to make _init and _fini
8915 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
8919 /* See whether we can group stub sections together. Grouping stub
8920 sections may result in fewer stubs. More importantly, we need to
8921 put all .init* and .fini* stubs at the beginning of the .init or
8922 .fini output sections respectively, because glibc splits the
8923 _init and _fini functions into multiple parts. Putting a stub in
8924 the middle of a function is not a good idea. */
8927 group_sections (struct ppc_link_hash_table
*htab
,
8928 bfd_size_type stub_group_size
,
8929 bfd_boolean stubs_always_before_branch
)
8931 asection
**list
= htab
->input_list
+ htab
->top_index
;
8934 asection
*tail
= *list
;
8935 while (tail
!= NULL
)
8939 bfd_size_type total
;
8940 bfd_boolean big_sec
;
8945 big_sec
= total
> stub_group_size
;
8947 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
8949 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
8951 while ((prev
= PREV_SEC (curr
)) != NULL
8952 && ((total
+= curr
->output_offset
- prev
->output_offset
)
8954 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8957 /* OK, the size from the start of CURR to the end is less
8958 than stub_group_size and thus can be handled by one stub
8959 section. (or the tail section is itself larger than
8960 stub_group_size, in which case we may be toast.) We
8961 should really be keeping track of the total size of stubs
8962 added here, as stubs contribute to the final output
8963 section size. That's a little tricky, and this way will
8964 only break if stubs added make the total size more than
8965 2^25, ie. for the default stub_group_size, if stubs total
8966 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8969 prev
= PREV_SEC (tail
);
8970 /* Set up this stub group. */
8971 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8973 while (tail
!= curr
&& (tail
= prev
) != NULL
);
8975 /* But wait, there's more! Input sections up to stub_group_size
8976 bytes before the stub section can be handled by it too.
8977 Don't do this if we have a really large section after the
8978 stubs, as adding more stubs increases the chance that
8979 branches may not reach into the stub section. */
8980 if (!stubs_always_before_branch
&& !big_sec
)
8984 && ((total
+= tail
->output_offset
- prev
->output_offset
)
8986 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8989 prev
= PREV_SEC (tail
);
8990 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8996 while (list
-- != htab
->input_list
);
8997 free (htab
->input_list
);
9001 /* Determine and set the size of the stub section for a final link.
9003 The basic idea here is to examine all the relocations looking for
9004 PC-relative calls to a target that is unreachable with a "bl"
9008 ppc64_elf_size_stubs (bfd
*output_bfd
,
9009 struct bfd_link_info
*info
,
9010 bfd_signed_vma group_size
,
9011 asection
*(*add_stub_section
) (const char *, asection
*),
9012 void (*layout_sections_again
) (void))
9014 bfd_size_type stub_group_size
;
9015 bfd_boolean stubs_always_before_branch
;
9016 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9018 /* Stash our params away. */
9019 htab
->add_stub_section
= add_stub_section
;
9020 htab
->layout_sections_again
= layout_sections_again
;
9021 stubs_always_before_branch
= group_size
< 0;
9023 stub_group_size
= -group_size
;
9025 stub_group_size
= group_size
;
9026 if (stub_group_size
== 1)
9028 /* Default values. */
9029 if (stubs_always_before_branch
)
9031 stub_group_size
= 0x1e00000;
9032 if (htab
->has_14bit_branch
)
9033 stub_group_size
= 0x7800;
9037 stub_group_size
= 0x1c00000;
9038 if (htab
->has_14bit_branch
)
9039 stub_group_size
= 0x7000;
9043 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
9048 unsigned int bfd_indx
;
9051 htab
->stub_iteration
+= 1;
9053 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
9055 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
9057 Elf_Internal_Shdr
*symtab_hdr
;
9059 Elf_Internal_Sym
*local_syms
= NULL
;
9061 if (!is_ppc64_elf_target (input_bfd
->xvec
))
9064 /* We'll need the symbol table in a second. */
9065 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
9066 if (symtab_hdr
->sh_info
== 0)
9069 /* Walk over each section attached to the input bfd. */
9070 for (section
= input_bfd
->sections
;
9072 section
= section
->next
)
9074 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
9076 /* If there aren't any relocs, then there's nothing more
9078 if ((section
->flags
& SEC_RELOC
) == 0
9079 || section
->reloc_count
== 0)
9082 /* If this section is a link-once section that will be
9083 discarded, then don't create any stubs. */
9084 if (section
->output_section
== NULL
9085 || section
->output_section
->owner
!= output_bfd
)
9088 /* Get the relocs. */
9090 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
9092 if (internal_relocs
== NULL
)
9093 goto error_ret_free_local
;
9095 /* Now examine each relocation. */
9096 irela
= internal_relocs
;
9097 irelaend
= irela
+ section
->reloc_count
;
9098 for (; irela
< irelaend
; irela
++)
9100 enum elf_ppc64_reloc_type r_type
;
9101 unsigned int r_indx
;
9102 enum ppc_stub_type stub_type
;
9103 struct ppc_stub_hash_entry
*stub_entry
;
9104 asection
*sym_sec
, *code_sec
;
9106 bfd_vma destination
;
9107 bfd_boolean ok_dest
;
9108 struct ppc_link_hash_entry
*hash
;
9109 struct ppc_link_hash_entry
*fdh
;
9110 struct elf_link_hash_entry
*h
;
9111 Elf_Internal_Sym
*sym
;
9113 const asection
*id_sec
;
9116 r_type
= ELF64_R_TYPE (irela
->r_info
);
9117 r_indx
= ELF64_R_SYM (irela
->r_info
);
9119 if (r_type
>= R_PPC64_max
)
9121 bfd_set_error (bfd_error_bad_value
);
9122 goto error_ret_free_internal
;
9125 /* Only look for stubs on branch instructions. */
9126 if (r_type
!= R_PPC64_REL24
9127 && r_type
!= R_PPC64_REL14
9128 && r_type
!= R_PPC64_REL14_BRTAKEN
9129 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
9132 /* Now determine the call target, its name, value,
9134 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9136 goto error_ret_free_internal
;
9137 hash
= (struct ppc_link_hash_entry
*) h
;
9144 sym_value
= sym
->st_value
;
9147 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
9148 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
9150 sym_value
= hash
->elf
.root
.u
.def
.value
;
9151 if (sym_sec
->output_section
!= NULL
)
9154 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
9155 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
9157 /* Recognise an old ABI func code entry sym, and
9158 use the func descriptor sym instead if it is
9160 if (hash
->elf
.root
.root
.string
[0] == '.'
9161 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
9163 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
9164 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
9166 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
9167 sym_value
= fdh
->elf
.root
.u
.def
.value
;
9168 if (sym_sec
->output_section
!= NULL
)
9177 bfd_set_error (bfd_error_bad_value
);
9178 goto error_ret_free_internal
;
9184 sym_value
+= irela
->r_addend
;
9185 destination
= (sym_value
9186 + sym_sec
->output_offset
9187 + sym_sec
->output_section
->vma
);
9191 opd_adjust
= get_opd_info (sym_sec
);
9192 if (opd_adjust
!= NULL
)
9198 long adjust
= opd_adjust
[sym_value
/ 8];
9201 sym_value
+= adjust
;
9203 dest
= opd_entry_value (sym_sec
, sym_value
,
9204 &code_sec
, &sym_value
);
9205 if (dest
!= (bfd_vma
) -1)
9210 /* Fixup old ABI sym to point at code
9212 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
9213 hash
->elf
.root
.u
.def
.section
= code_sec
;
9214 hash
->elf
.root
.u
.def
.value
= sym_value
;
9219 /* Determine what (if any) linker stub is needed. */
9220 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
9223 if (stub_type
!= ppc_stub_plt_call
)
9225 /* Check whether we need a TOC adjusting stub.
9226 Since the linker pastes together pieces from
9227 different object files when creating the
9228 _init and _fini functions, it may be that a
9229 call to what looks like a local sym is in
9230 fact a call needing a TOC adjustment. */
9231 if (code_sec
!= NULL
9232 && code_sec
->output_section
!= NULL
9233 && (htab
->stub_group
[code_sec
->id
].toc_off
9234 != htab
->stub_group
[section
->id
].toc_off
)
9235 && (code_sec
->has_toc_reloc
9236 || code_sec
->makes_toc_func_call
))
9237 stub_type
= ppc_stub_long_branch_r2off
;
9240 if (stub_type
== ppc_stub_none
)
9243 /* __tls_get_addr calls might be eliminated. */
9244 if (stub_type
!= ppc_stub_plt_call
9246 && (hash
== htab
->tls_get_addr
9247 || hash
== htab
->tls_get_addr_fd
)
9248 && section
->has_tls_reloc
9249 && irela
!= internal_relocs
)
9254 if (!get_tls_mask (&tls_mask
, NULL
, &local_syms
,
9255 irela
- 1, input_bfd
))
9256 goto error_ret_free_internal
;
9261 /* Support for grouping stub sections. */
9262 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
9264 /* Get the name of this stub. */
9265 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
9267 goto error_ret_free_internal
;
9269 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
9270 stub_name
, FALSE
, FALSE
);
9271 if (stub_entry
!= NULL
)
9273 /* The proper stub has already been created. */
9278 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
9279 if (stub_entry
== NULL
)
9282 error_ret_free_internal
:
9283 if (elf_section_data (section
)->relocs
== NULL
)
9284 free (internal_relocs
);
9285 error_ret_free_local
:
9286 if (local_syms
!= NULL
9287 && (symtab_hdr
->contents
9288 != (unsigned char *) local_syms
))
9293 stub_entry
->stub_type
= stub_type
;
9294 stub_entry
->target_value
= sym_value
;
9295 stub_entry
->target_section
= code_sec
;
9296 stub_entry
->h
= hash
;
9297 stub_entry
->addend
= irela
->r_addend
;
9299 if (stub_entry
->h
!= NULL
)
9300 htab
->stub_globals
+= 1;
9303 /* We're done with the internal relocs, free them. */
9304 if (elf_section_data (section
)->relocs
!= internal_relocs
)
9305 free (internal_relocs
);
9308 if (local_syms
!= NULL
9309 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9311 if (!info
->keep_memory
)
9314 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9318 /* We may have added some stubs. Find out the new size of the
9320 for (stub_sec
= htab
->stub_bfd
->sections
;
9322 stub_sec
= stub_sec
->next
)
9323 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9325 stub_sec
->rawsize
= stub_sec
->size
;
9327 stub_sec
->reloc_count
= 0;
9330 htab
->brlt
->size
= 0;
9331 if (htab
->relbrlt
!= NULL
)
9332 htab
->relbrlt
->size
= 0;
9334 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
9336 for (stub_sec
= htab
->stub_bfd
->sections
;
9338 stub_sec
= stub_sec
->next
)
9339 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9340 && stub_sec
->rawsize
!= stub_sec
->size
)
9343 /* Exit from this loop when no stubs have been added, and no stubs
9344 have changed size. */
9345 if (stub_sec
== NULL
)
9348 /* Ask the linker to do its stuff. */
9349 (*htab
->layout_sections_again
) ();
9352 /* It would be nice to strip htab->brlt from the output if the
9353 section is empty, but it's too late. If we strip sections here,
9354 the dynamic symbol table is corrupted since the section symbol
9355 for the stripped section isn't written. */
9360 /* Called after we have determined section placement. If sections
9361 move, we'll be called again. Provide a value for TOCstart. */
9364 ppc64_elf_toc (bfd
*obfd
)
9369 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9370 order. The TOC starts where the first of these sections starts. */
9371 s
= bfd_get_section_by_name (obfd
, ".got");
9373 s
= bfd_get_section_by_name (obfd
, ".toc");
9375 s
= bfd_get_section_by_name (obfd
, ".tocbss");
9377 s
= bfd_get_section_by_name (obfd
, ".plt");
9380 /* This may happen for
9381 o references to TOC base (SYM@toc / TOC[tc0]) without a
9384 o --gc-sections and empty TOC sections
9386 FIXME: Warn user? */
9388 /* Look for a likely section. We probably won't even be
9390 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9391 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
9392 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9395 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9396 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
9397 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9400 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9401 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
9404 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9405 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
9411 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
9416 /* Build all the stubs associated with the current output file.
9417 The stubs are kept in a hash table attached to the main linker
9418 hash table. This function is called via gldelf64ppc_finish. */
9421 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
9422 struct bfd_link_info
*info
,
9425 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9428 int stub_sec_count
= 0;
9430 htab
->emit_stub_syms
= emit_stub_syms
;
9432 /* Allocate memory to hold the linker stubs. */
9433 for (stub_sec
= htab
->stub_bfd
->sections
;
9435 stub_sec
= stub_sec
->next
)
9436 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9437 && stub_sec
->size
!= 0)
9439 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
9440 if (stub_sec
->contents
== NULL
)
9442 /* We want to check that built size is the same as calculated
9443 size. rawsize is a convenient location to use. */
9444 stub_sec
->rawsize
= stub_sec
->size
;
9448 if (htab
->plt
!= NULL
)
9453 /* Build the .glink plt call stub. */
9454 plt0
= (htab
->plt
->output_section
->vma
9455 + htab
->plt
->output_offset
9456 - (htab
->glink
->output_section
->vma
9457 + htab
->glink
->output_offset
9458 + GLINK_CALL_STUB_SIZE
));
9459 if (plt0
+ 0x80008000 > 0xffffffff)
9461 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
9462 bfd_set_error (bfd_error_bad_value
);
9466 if (htab
->emit_stub_syms
)
9468 struct elf_link_hash_entry
*h
;
9469 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
9472 if (h
->root
.type
== bfd_link_hash_new
)
9474 h
->root
.type
= bfd_link_hash_defined
;
9475 h
->root
.u
.def
.section
= htab
->glink
;
9476 h
->root
.u
.def
.value
= 0;
9479 h
->ref_regular_nonweak
= 1;
9480 h
->forced_local
= 1;
9484 p
= htab
->glink
->contents
;
9485 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
9487 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
9489 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
9491 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9493 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
9495 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
9497 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
9499 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9501 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
9503 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
9505 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
9507 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
9509 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
9511 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
9513 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
9515 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
9518 /* Build the .glink lazy link call stubs. */
9520 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
9524 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
9529 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
9531 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
9534 bfd_put_32 (htab
->glink
->owner
,
9535 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
9539 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
9542 if (htab
->brlt
->size
!= 0)
9544 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
9546 if (htab
->brlt
->contents
== NULL
)
9549 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
9551 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
9552 htab
->relbrlt
->size
);
9553 if (htab
->relbrlt
->contents
== NULL
)
9557 /* Build the stubs as directed by the stub hash table. */
9558 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
9560 for (stub_sec
= htab
->stub_bfd
->sections
;
9562 stub_sec
= stub_sec
->next
)
9563 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9565 stub_sec_count
+= 1;
9566 if (stub_sec
->rawsize
!= stub_sec
->size
)
9570 if (stub_sec
!= NULL
9571 || htab
->glink
->rawsize
!= htab
->glink
->size
)
9573 htab
->stub_error
= TRUE
;
9574 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
9577 if (htab
->stub_error
)
9582 *stats
= bfd_malloc (500);
9586 sprintf (*stats
, _("linker stubs in %u group%s\n"
9589 " long branch %lu\n"
9590 " long toc adj %lu\n"
9593 stub_sec_count
== 1 ? "" : "s",
9594 htab
->stub_count
[ppc_stub_long_branch
- 1],
9595 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
9596 htab
->stub_count
[ppc_stub_plt_branch
- 1],
9597 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
9598 htab
->stub_count
[ppc_stub_plt_call
- 1]);
9603 /* This function undoes the changes made by add_symbol_adjust. */
9606 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
9608 struct ppc_link_hash_entry
*eh
;
9610 if (h
->root
.type
== bfd_link_hash_indirect
)
9613 if (h
->root
.type
== bfd_link_hash_warning
)
9614 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9616 eh
= (struct ppc_link_hash_entry
*) h
;
9617 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
9620 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
9625 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
9627 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9628 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
9631 /* What to do when ld finds relocations against symbols defined in
9632 discarded sections. */
9635 ppc64_elf_action_discarded (asection
*sec
)
9637 if (strcmp (".opd", sec
->name
) == 0)
9640 if (strcmp (".toc", sec
->name
) == 0)
9643 if (strcmp (".toc1", sec
->name
) == 0)
9646 return _bfd_elf_default_action_discarded (sec
);
9649 /* The RELOCATE_SECTION function is called by the ELF backend linker
9650 to handle the relocations for a section.
9652 The relocs are always passed as Rela structures; if the section
9653 actually uses Rel structures, the r_addend field will always be
9656 This function is responsible for adjust the section contents as
9657 necessary, and (if using Rela relocs and generating a
9658 relocatable output file) adjusting the reloc addend as
9661 This function does not have to worry about setting the reloc
9662 address or the reloc symbol index.
9664 LOCAL_SYMS is a pointer to the swapped in local symbols.
9666 LOCAL_SECTIONS is an array giving the section in the input file
9667 corresponding to the st_shndx field of each local symbol.
9669 The global hash table entry for the global symbols can be found
9670 via elf_sym_hashes (input_bfd).
9672 When generating relocatable output, this function must handle
9673 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9674 going to be the section symbol corresponding to the output
9675 section, which means that the addend must be adjusted
9679 ppc64_elf_relocate_section (bfd
*output_bfd
,
9680 struct bfd_link_info
*info
,
9682 asection
*input_section
,
9684 Elf_Internal_Rela
*relocs
,
9685 Elf_Internal_Sym
*local_syms
,
9686 asection
**local_sections
)
9688 struct ppc_link_hash_table
*htab
;
9689 Elf_Internal_Shdr
*symtab_hdr
;
9690 struct elf_link_hash_entry
**sym_hashes
;
9691 Elf_Internal_Rela
*rel
;
9692 Elf_Internal_Rela
*relend
;
9693 Elf_Internal_Rela outrel
;
9695 struct got_entry
**local_got_ents
;
9697 bfd_boolean ret
= TRUE
;
9699 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9700 bfd_boolean is_power4
= FALSE
;
9702 /* Initialize howto table if needed. */
9703 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9706 htab
= ppc_hash_table (info
);
9708 /* Don't relocate stub sections. */
9709 if (input_section
->owner
== htab
->stub_bfd
)
9712 local_got_ents
= elf_local_got_ents (input_bfd
);
9713 TOCstart
= elf_gp (output_bfd
);
9714 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
9715 sym_hashes
= elf_sym_hashes (input_bfd
);
9716 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
9719 relend
= relocs
+ input_section
->reloc_count
;
9720 for (; rel
< relend
; rel
++)
9722 enum elf_ppc64_reloc_type r_type
;
9723 bfd_vma addend
, orig_addend
;
9724 bfd_reloc_status_type r
;
9725 Elf_Internal_Sym
*sym
;
9727 struct elf_link_hash_entry
*h_elf
;
9728 struct ppc_link_hash_entry
*h
;
9729 struct ppc_link_hash_entry
*fdh
;
9730 const char *sym_name
;
9731 unsigned long r_symndx
, toc_symndx
;
9732 char tls_mask
, tls_gd
, tls_type
;
9735 bfd_boolean unresolved_reloc
;
9737 unsigned long insn
, mask
;
9738 struct ppc_stub_hash_entry
*stub_entry
;
9739 bfd_vma max_br_offset
;
9742 r_type
= ELF64_R_TYPE (rel
->r_info
);
9743 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9745 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9746 symbol of the previous ADDR64 reloc. The symbol gives us the
9747 proper TOC base to use. */
9748 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
9750 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
9752 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
9758 unresolved_reloc
= FALSE
;
9760 orig_addend
= rel
->r_addend
;
9762 if (r_symndx
< symtab_hdr
->sh_info
)
9764 /* It's a local symbol. */
9767 sym
= local_syms
+ r_symndx
;
9768 sec
= local_sections
[r_symndx
];
9769 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
9770 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
9771 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
9772 opd_adjust
= get_opd_info (sec
);
9773 if (opd_adjust
!= NULL
)
9775 long adjust
= opd_adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
9780 /* If this is a relocation against the opd section sym
9781 and we have edited .opd, adjust the reloc addend so
9782 that ld -r and ld --emit-relocs output is correct.
9783 If it is a reloc against some other .opd symbol,
9784 then the symbol value will be adjusted later. */
9785 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
9786 rel
->r_addend
+= adjust
;
9788 relocation
+= adjust
;
9791 if (info
->relocatable
)
9796 if (info
->relocatable
)
9798 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
9799 r_symndx
, symtab_hdr
, sym_hashes
,
9800 h_elf
, sec
, relocation
,
9801 unresolved_reloc
, warned
);
9802 sym_name
= h_elf
->root
.root
.string
;
9803 sym_type
= h_elf
->type
;
9805 h
= (struct ppc_link_hash_entry
*) h_elf
;
9807 /* TLS optimizations. Replace instruction sequences and relocs
9808 based on information we collected in tls_optimize. We edit
9809 RELOCS so that --emit-relocs will output something sensible
9810 for the final instruction stream. */
9814 if (IS_PPC64_TLS_RELOC (r_type
))
9817 tls_mask
= h
->tls_mask
;
9818 else if (local_got_ents
!= NULL
)
9821 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
9822 tls_mask
= lgot_masks
[r_symndx
];
9824 if (tls_mask
== 0 && r_type
== R_PPC64_TLS
)
9826 /* Check for toc tls entries. */
9829 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9834 tls_mask
= *toc_tls
;
9838 /* Check that tls relocs are used with tls syms, and non-tls
9839 relocs are used with non-tls syms. */
9841 && r_type
!= R_PPC64_NONE
9843 || h
->elf
.root
.type
== bfd_link_hash_defined
9844 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
9845 && IS_PPC64_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
9847 if (r_type
== R_PPC64_TLS
&& tls_mask
!= 0)
9848 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9851 (*_bfd_error_handler
)
9852 (sym_type
== STT_TLS
9853 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9854 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9857 (long) rel
->r_offset
,
9858 ppc64_elf_howto_table
[r_type
]->name
,
9862 /* Ensure reloc mapping code below stays sane. */
9863 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
9864 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
9865 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
9866 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
9867 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
9868 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
9869 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
9870 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
9871 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
9872 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
9881 case R_PPC64_TOC16_LO
:
9882 case R_PPC64_TOC16_DS
:
9883 case R_PPC64_TOC16_LO_DS
:
9885 /* Check for toc tls entries. */
9889 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9896 tls_mask
= *toc_tls
;
9897 if (r_type
== R_PPC64_TOC16_DS
9898 || r_type
== R_PPC64_TOC16_LO_DS
)
9901 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
9906 /* If we found a GD reloc pair, then we might be
9907 doing a GD->IE transition. */
9910 tls_gd
= TLS_TPRELGD
;
9911 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9912 goto tls_get_addr_check
;
9914 else if (retval
== 3)
9916 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9917 goto tls_get_addr_check
;
9924 case R_PPC64_GOT_TPREL16_DS
:
9925 case R_PPC64_GOT_TPREL16_LO_DS
:
9927 && (tls_mask
& TLS_TPREL
) == 0)
9930 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
9932 insn
|= 0x3c0d0000; /* addis 0,13,0 */
9933 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
9934 r_type
= R_PPC64_TPREL16_HA
;
9935 if (toc_symndx
!= 0)
9937 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9938 /* We changed the symbol. Start over in order to
9939 get h, sym, sec etc. right. */
9944 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9950 && (tls_mask
& TLS_TPREL
) == 0)
9953 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
9954 if ((insn
& ((0x3f << 26) | (31 << 11)))
9955 == ((31 << 26) | (13 << 11)))
9956 rtra
= insn
& ((1 << 26) - (1 << 16));
9957 else if ((insn
& ((0x3f << 26) | (31 << 16)))
9958 == ((31 << 26) | (13 << 16)))
9959 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
9962 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
9965 else if ((insn
& (31 << 1)) == 23 << 1
9966 && ((insn
& (31 << 6)) < 14 << 6
9967 || ((insn
& (31 << 6)) >= 16 << 6
9968 && (insn
& (31 << 6)) < 24 << 6)))
9969 /* load and store indexed -> dform. */
9970 insn
= (32 | ((insn
>> 6) & 31)) << 26;
9971 else if ((insn
& (31 << 1)) == 21 << 1
9972 && (insn
& (0x1a << 6)) == 0)
9973 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9974 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
9975 | ((insn
>> 6) & 1));
9976 else if ((insn
& (31 << 1)) == 21 << 1
9977 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
9979 insn
= (58 << 26) | 2;
9983 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9984 /* Was PPC64_TLS which sits on insn boundary, now
9985 PPC64_TPREL16_LO which is at insn+2. */
9987 r_type
= R_PPC64_TPREL16_LO
;
9988 if (toc_symndx
!= 0)
9990 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9991 /* We changed the symbol. Start over in order to
9992 get h, sym, sec etc. right. */
9997 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10001 case R_PPC64_GOT_TLSGD16_HI
:
10002 case R_PPC64_GOT_TLSGD16_HA
:
10003 tls_gd
= TLS_TPRELGD
;
10004 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10008 case R_PPC64_GOT_TLSLD16_HI
:
10009 case R_PPC64_GOT_TLSLD16_HA
:
10010 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10013 if ((tls_mask
& tls_gd
) != 0)
10014 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10015 + R_PPC64_GOT_TPREL16_DS
);
10018 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
10019 rel
->r_offset
-= 2;
10020 r_type
= R_PPC64_NONE
;
10022 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10026 case R_PPC64_GOT_TLSGD16
:
10027 case R_PPC64_GOT_TLSGD16_LO
:
10028 tls_gd
= TLS_TPRELGD
;
10029 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10030 goto tls_get_addr_check
;
10033 case R_PPC64_GOT_TLSLD16
:
10034 case R_PPC64_GOT_TLSLD16_LO
:
10035 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10037 tls_get_addr_check
:
10038 if (rel
+ 1 < relend
)
10040 enum elf_ppc64_reloc_type r_type2
;
10041 unsigned long r_symndx2
;
10042 struct elf_link_hash_entry
*h2
;
10043 bfd_vma insn1
, insn2
, insn3
;
10046 /* The next instruction should be a call to
10047 __tls_get_addr. Peek at the reloc to be sure. */
10048 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
10049 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
10050 if (r_symndx2
< symtab_hdr
->sh_info
10051 || (r_type2
!= R_PPC64_REL14
10052 && r_type2
!= R_PPC64_REL14_BRTAKEN
10053 && r_type2
!= R_PPC64_REL14_BRNTAKEN
10054 && r_type2
!= R_PPC64_REL24
))
10057 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
10058 while (h2
->root
.type
== bfd_link_hash_indirect
10059 || h2
->root
.type
== bfd_link_hash_warning
)
10060 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
10061 if (h2
== NULL
|| (h2
!= &htab
->tls_get_addr
->elf
10062 && h2
!= &htab
->tls_get_addr_fd
->elf
))
10065 /* OK, it checks out. Replace the call. */
10066 offset
= rel
[1].r_offset
;
10067 insn1
= bfd_get_32 (output_bfd
,
10068 contents
+ rel
->r_offset
- 2);
10069 insn3
= bfd_get_32 (output_bfd
,
10070 contents
+ offset
+ 4);
10071 if ((tls_mask
& tls_gd
) != 0)
10074 insn1
&= (1 << 26) - (1 << 2);
10075 insn1
|= 58 << 26; /* ld */
10076 insn2
= 0x7c636a14; /* add 3,3,13 */
10077 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
10078 if ((tls_mask
& TLS_EXPLICIT
) == 0)
10079 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10080 + R_PPC64_GOT_TPREL16_DS
);
10082 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
10083 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10088 insn1
= 0x3c6d0000; /* addis 3,13,0 */
10089 insn2
= 0x38630000; /* addi 3,3,0 */
10092 /* Was an LD reloc. */
10094 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10095 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10097 else if (toc_symndx
!= 0)
10098 r_symndx
= toc_symndx
;
10099 r_type
= R_PPC64_TPREL16_HA
;
10100 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10101 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
10102 R_PPC64_TPREL16_LO
);
10103 rel
[1].r_offset
+= 2;
10106 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
10110 rel
[1].r_offset
+= 4;
10112 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
10113 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
10114 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
10115 if (tls_gd
== 0 || toc_symndx
!= 0)
10117 /* We changed the symbol. Start over in order
10118 to get h, sym, sec etc. right. */
10126 case R_PPC64_DTPMOD64
:
10127 if (rel
+ 1 < relend
10128 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
10129 && rel
[1].r_offset
== rel
->r_offset
+ 8)
10131 if ((tls_mask
& TLS_GD
) == 0)
10133 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
10134 if ((tls_mask
& TLS_TPRELGD
) != 0)
10135 r_type
= R_PPC64_TPREL64
;
10138 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
10139 r_type
= R_PPC64_NONE
;
10141 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10146 if ((tls_mask
& TLS_LD
) == 0)
10148 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
10149 r_type
= R_PPC64_NONE
;
10150 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10155 case R_PPC64_TPREL64
:
10156 if ((tls_mask
& TLS_TPREL
) == 0)
10158 r_type
= R_PPC64_NONE
;
10159 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10164 /* Handle other relocations that tweak non-addend part of insn. */
10166 max_br_offset
= 1 << 25;
10167 addend
= rel
->r_addend
;
10173 /* Branch taken prediction relocations. */
10174 case R_PPC64_ADDR14_BRTAKEN
:
10175 case R_PPC64_REL14_BRTAKEN
:
10176 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10179 /* Branch not taken prediction relocations. */
10180 case R_PPC64_ADDR14_BRNTAKEN
:
10181 case R_PPC64_REL14_BRNTAKEN
:
10182 insn
|= bfd_get_32 (output_bfd
,
10183 contents
+ rel
->r_offset
) & ~(0x01 << 21);
10186 case R_PPC64_REL14
:
10187 max_br_offset
= 1 << 15;
10190 case R_PPC64_REL24
:
10191 /* Calls to functions with a different TOC, such as calls to
10192 shared objects, need to alter the TOC pointer. This is
10193 done using a linkage stub. A REL24 branching to these
10194 linkage stubs needs to be followed by a nop, as the nop
10195 will be replaced with an instruction to restore the TOC
10200 && (((fdh
= h
->oh
) != NULL
10201 && fdh
->elf
.plt
.plist
!= NULL
)
10202 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
10204 && sec
->output_section
!= NULL
10205 && sec
->id
<= htab
->top_id
10206 && (htab
->stub_group
[sec
->id
].toc_off
10207 != htab
->stub_group
[input_section
->id
].toc_off
)))
10208 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
10209 rel
, htab
)) != NULL
10210 && (stub_entry
->stub_type
== ppc_stub_plt_call
10211 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
10212 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
10214 bfd_boolean can_plt_call
= FALSE
;
10216 if (rel
->r_offset
+ 8 <= input_section
->size
)
10219 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
10221 || nop
== CROR_151515
|| nop
== CROR_313131
)
10223 bfd_put_32 (input_bfd
, LD_R2_40R1
,
10224 contents
+ rel
->r_offset
+ 4);
10225 can_plt_call
= TRUE
;
10231 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
10233 /* If this is a plain branch rather than a branch
10234 and link, don't require a nop. However, don't
10235 allow tail calls in a shared library as they
10236 will result in r2 being corrupted. */
10238 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
10239 if (info
->executable
&& (br
& 1) == 0)
10240 can_plt_call
= TRUE
;
10245 && strcmp (h
->elf
.root
.root
.string
,
10246 ".__libc_start_main") == 0)
10248 /* Allow crt1 branch to go via a toc adjusting stub. */
10249 can_plt_call
= TRUE
;
10253 if (strcmp (input_section
->output_section
->name
,
10255 || strcmp (input_section
->output_section
->name
,
10257 (*_bfd_error_handler
)
10258 (_("%B(%A+0x%lx): automatic multiple TOCs "
10259 "not supported using your crt files; "
10260 "recompile with -mminimal-toc or upgrade gcc"),
10263 (long) rel
->r_offset
);
10265 (*_bfd_error_handler
)
10266 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10267 "does not allow automatic multiple TOCs; "
10268 "recompile with -mminimal-toc or "
10269 "-fno-optimize-sibling-calls, "
10270 "or make `%s' extern"),
10273 (long) rel
->r_offset
,
10276 bfd_set_error (bfd_error_bad_value
);
10282 && stub_entry
->stub_type
== ppc_stub_plt_call
)
10283 unresolved_reloc
= FALSE
;
10286 if (stub_entry
== NULL
10287 && get_opd_info (sec
) != NULL
)
10289 /* The branch destination is the value of the opd entry. */
10290 bfd_vma off
= (relocation
+ addend
10291 - sec
->output_section
->vma
10292 - sec
->output_offset
);
10293 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
10294 if (dest
!= (bfd_vma
) -1)
10301 /* If the branch is out of reach we ought to have a long
10303 from
= (rel
->r_offset
10304 + input_section
->output_offset
10305 + input_section
->output_section
->vma
);
10307 if (stub_entry
== NULL
10308 && (relocation
+ addend
- from
+ max_br_offset
10309 >= 2 * max_br_offset
)
10310 && r_type
!= R_PPC64_ADDR14_BRTAKEN
10311 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
10312 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
10315 if (stub_entry
!= NULL
)
10317 /* Munge up the value and addend so that we call the stub
10318 rather than the procedure directly. */
10319 relocation
= (stub_entry
->stub_offset
10320 + stub_entry
->stub_sec
->output_offset
10321 + stub_entry
->stub_sec
->output_section
->vma
);
10329 /* Set 'a' bit. This is 0b00010 in BO field for branch
10330 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10331 for branch on CTR insns (BO == 1a00t or 1a01t). */
10332 if ((insn
& (0x14 << 21)) == (0x04 << 21))
10333 insn
|= 0x02 << 21;
10334 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
10335 insn
|= 0x08 << 21;
10341 /* Invert 'y' bit if not the default. */
10342 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
10343 insn
^= 0x01 << 21;
10346 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
10349 /* NOP out calls to undefined weak functions.
10350 We can thus call a weak function without first
10351 checking whether the function is defined. */
10353 && h
->elf
.root
.type
== bfd_link_hash_undefweak
10354 && r_type
== R_PPC64_REL24
10358 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
10364 /* Set `addend'. */
10369 (*_bfd_error_handler
)
10370 (_("%B: unknown relocation type %d for symbol %s"),
10371 input_bfd
, (int) r_type
, sym_name
);
10373 bfd_set_error (bfd_error_bad_value
);
10379 case R_PPC64_GNU_VTINHERIT
:
10380 case R_PPC64_GNU_VTENTRY
:
10383 /* GOT16 relocations. Like an ADDR16 using the symbol's
10384 address in the GOT as relocation value instead of the
10385 symbol's value itself. Also, create a GOT entry for the
10386 symbol and put the symbol value there. */
10387 case R_PPC64_GOT_TLSGD16
:
10388 case R_PPC64_GOT_TLSGD16_LO
:
10389 case R_PPC64_GOT_TLSGD16_HI
:
10390 case R_PPC64_GOT_TLSGD16_HA
:
10391 tls_type
= TLS_TLS
| TLS_GD
;
10394 case R_PPC64_GOT_TLSLD16
:
10395 case R_PPC64_GOT_TLSLD16_LO
:
10396 case R_PPC64_GOT_TLSLD16_HI
:
10397 case R_PPC64_GOT_TLSLD16_HA
:
10398 tls_type
= TLS_TLS
| TLS_LD
;
10401 case R_PPC64_GOT_TPREL16_DS
:
10402 case R_PPC64_GOT_TPREL16_LO_DS
:
10403 case R_PPC64_GOT_TPREL16_HI
:
10404 case R_PPC64_GOT_TPREL16_HA
:
10405 tls_type
= TLS_TLS
| TLS_TPREL
;
10408 case R_PPC64_GOT_DTPREL16_DS
:
10409 case R_PPC64_GOT_DTPREL16_LO_DS
:
10410 case R_PPC64_GOT_DTPREL16_HI
:
10411 case R_PPC64_GOT_DTPREL16_HA
:
10412 tls_type
= TLS_TLS
| TLS_DTPREL
;
10415 case R_PPC64_GOT16
:
10416 case R_PPC64_GOT16_LO
:
10417 case R_PPC64_GOT16_HI
:
10418 case R_PPC64_GOT16_HA
:
10419 case R_PPC64_GOT16_DS
:
10420 case R_PPC64_GOT16_LO_DS
:
10423 /* Relocation is to the entry for this symbol in the global
10428 unsigned long indx
= 0;
10430 if (tls_type
== (TLS_TLS
| TLS_LD
)
10432 || !h
->elf
.def_dynamic
))
10433 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
10436 struct got_entry
*ent
;
10440 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
10441 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
10444 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
10445 /* This is actually a static link, or it is a
10446 -Bsymbolic link and the symbol is defined
10447 locally, or the symbol was forced to be local
10448 because of a version file. */
10452 indx
= h
->elf
.dynindx
;
10453 unresolved_reloc
= FALSE
;
10455 ent
= h
->elf
.got
.glist
;
10459 if (local_got_ents
== NULL
)
10461 ent
= local_got_ents
[r_symndx
];
10464 for (; ent
!= NULL
; ent
= ent
->next
)
10465 if (ent
->addend
== orig_addend
10466 && ent
->owner
== input_bfd
10467 && ent
->tls_type
== tls_type
)
10471 offp
= &ent
->got
.offset
;
10474 got
= ppc64_elf_tdata (input_bfd
)->got
;
10478 /* The offset must always be a multiple of 8. We use the
10479 least significant bit to record whether we have already
10480 processed this entry. */
10482 if ((off
& 1) != 0)
10486 /* Generate relocs for the dynamic linker, except in
10487 the case of TLSLD where we'll use one entry per
10489 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
10492 if ((info
->shared
|| indx
!= 0)
10494 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10495 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
10497 outrel
.r_offset
= (got
->output_section
->vma
10498 + got
->output_offset
10500 outrel
.r_addend
= addend
;
10501 if (tls_type
& (TLS_LD
| TLS_GD
))
10503 outrel
.r_addend
= 0;
10504 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
10505 if (tls_type
== (TLS_TLS
| TLS_GD
))
10507 loc
= relgot
->contents
;
10508 loc
+= (relgot
->reloc_count
++
10509 * sizeof (Elf64_External_Rela
));
10510 bfd_elf64_swap_reloca_out (output_bfd
,
10512 outrel
.r_offset
+= 8;
10513 outrel
.r_addend
= addend
;
10515 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10518 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
10519 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10520 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10521 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
10522 else if (indx
== 0)
10524 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
10526 /* Write the .got section contents for the sake
10528 loc
= got
->contents
+ off
;
10529 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
10533 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
10535 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
10537 outrel
.r_addend
+= relocation
;
10538 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
10539 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
10541 loc
= relgot
->contents
;
10542 loc
+= (relgot
->reloc_count
++
10543 * sizeof (Elf64_External_Rela
));
10544 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10547 /* Init the .got section contents here if we're not
10548 emitting a reloc. */
10551 relocation
+= addend
;
10552 if (tls_type
== (TLS_TLS
| TLS_LD
))
10554 else if (tls_type
!= 0)
10556 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10557 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10558 relocation
+= DTP_OFFSET
- TP_OFFSET
;
10560 if (tls_type
== (TLS_TLS
| TLS_GD
))
10562 bfd_put_64 (output_bfd
, relocation
,
10563 got
->contents
+ off
+ 8);
10568 bfd_put_64 (output_bfd
, relocation
,
10569 got
->contents
+ off
);
10573 if (off
>= (bfd_vma
) -2)
10576 relocation
= got
->output_offset
+ off
;
10578 /* TOC base (r2) is TOC start plus 0x8000. */
10579 addend
= -TOC_BASE_OFF
;
10583 case R_PPC64_PLT16_HA
:
10584 case R_PPC64_PLT16_HI
:
10585 case R_PPC64_PLT16_LO
:
10586 case R_PPC64_PLT32
:
10587 case R_PPC64_PLT64
:
10588 /* Relocation is to the entry for this symbol in the
10589 procedure linkage table. */
10591 /* Resolve a PLT reloc against a local symbol directly,
10592 without using the procedure linkage table. */
10596 /* It's possible that we didn't make a PLT entry for this
10597 symbol. This happens when statically linking PIC code,
10598 or when using -Bsymbolic. Go find a match if there is a
10600 if (htab
->plt
!= NULL
)
10602 struct plt_entry
*ent
;
10603 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10604 if (ent
->addend
== orig_addend
10605 && ent
->plt
.offset
!= (bfd_vma
) -1)
10607 relocation
= (htab
->plt
->output_section
->vma
10608 + htab
->plt
->output_offset
10609 + ent
->plt
.offset
);
10610 unresolved_reloc
= FALSE
;
10616 /* Relocation value is TOC base. */
10617 relocation
= TOCstart
;
10619 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
10620 else if (unresolved_reloc
)
10622 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
10623 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
10625 unresolved_reloc
= TRUE
;
10628 /* TOC16 relocs. We want the offset relative to the TOC base,
10629 which is the address of the start of the TOC plus 0x8000.
10630 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10632 case R_PPC64_TOC16
:
10633 case R_PPC64_TOC16_LO
:
10634 case R_PPC64_TOC16_HI
:
10635 case R_PPC64_TOC16_DS
:
10636 case R_PPC64_TOC16_LO_DS
:
10637 case R_PPC64_TOC16_HA
:
10638 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
10641 /* Relocate against the beginning of the section. */
10642 case R_PPC64_SECTOFF
:
10643 case R_PPC64_SECTOFF_LO
:
10644 case R_PPC64_SECTOFF_HI
:
10645 case R_PPC64_SECTOFF_DS
:
10646 case R_PPC64_SECTOFF_LO_DS
:
10647 case R_PPC64_SECTOFF_HA
:
10649 addend
-= sec
->output_section
->vma
;
10652 case R_PPC64_REL14
:
10653 case R_PPC64_REL14_BRNTAKEN
:
10654 case R_PPC64_REL14_BRTAKEN
:
10655 case R_PPC64_REL24
:
10658 case R_PPC64_TPREL16
:
10659 case R_PPC64_TPREL16_LO
:
10660 case R_PPC64_TPREL16_HI
:
10661 case R_PPC64_TPREL16_HA
:
10662 case R_PPC64_TPREL16_DS
:
10663 case R_PPC64_TPREL16_LO_DS
:
10664 case R_PPC64_TPREL16_HIGHER
:
10665 case R_PPC64_TPREL16_HIGHERA
:
10666 case R_PPC64_TPREL16_HIGHEST
:
10667 case R_PPC64_TPREL16_HIGHESTA
:
10668 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10670 /* The TPREL16 relocs shouldn't really be used in shared
10671 libs as they will result in DT_TEXTREL being set, but
10672 support them anyway. */
10676 case R_PPC64_DTPREL16
:
10677 case R_PPC64_DTPREL16_LO
:
10678 case R_PPC64_DTPREL16_HI
:
10679 case R_PPC64_DTPREL16_HA
:
10680 case R_PPC64_DTPREL16_DS
:
10681 case R_PPC64_DTPREL16_LO_DS
:
10682 case R_PPC64_DTPREL16_HIGHER
:
10683 case R_PPC64_DTPREL16_HIGHERA
:
10684 case R_PPC64_DTPREL16_HIGHEST
:
10685 case R_PPC64_DTPREL16_HIGHESTA
:
10686 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10689 case R_PPC64_DTPMOD64
:
10694 case R_PPC64_TPREL64
:
10695 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10698 case R_PPC64_DTPREL64
:
10699 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10702 /* Relocations that may need to be propagated if this is a
10704 case R_PPC64_REL30
:
10705 case R_PPC64_REL32
:
10706 case R_PPC64_REL64
:
10707 case R_PPC64_ADDR14
:
10708 case R_PPC64_ADDR14_BRNTAKEN
:
10709 case R_PPC64_ADDR14_BRTAKEN
:
10710 case R_PPC64_ADDR16
:
10711 case R_PPC64_ADDR16_DS
:
10712 case R_PPC64_ADDR16_HA
:
10713 case R_PPC64_ADDR16_HI
:
10714 case R_PPC64_ADDR16_HIGHER
:
10715 case R_PPC64_ADDR16_HIGHERA
:
10716 case R_PPC64_ADDR16_HIGHEST
:
10717 case R_PPC64_ADDR16_HIGHESTA
:
10718 case R_PPC64_ADDR16_LO
:
10719 case R_PPC64_ADDR16_LO_DS
:
10720 case R_PPC64_ADDR24
:
10721 case R_PPC64_ADDR32
:
10722 case R_PPC64_ADDR64
:
10723 case R_PPC64_UADDR16
:
10724 case R_PPC64_UADDR32
:
10725 case R_PPC64_UADDR64
:
10726 /* r_symndx will be zero only for relocs against symbols
10727 from removed linkonce sections, or sections discarded by
10728 a linker script. */
10735 if ((input_section
->flags
& SEC_ALLOC
) == 0)
10738 if (NO_OPD_RELOCS
&& is_opd
)
10743 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10744 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
10745 && (MUST_BE_DYN_RELOC (r_type
)
10746 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
10747 || (ELIMINATE_COPY_RELOCS
10750 && h
->elf
.dynindx
!= -1
10751 && !h
->elf
.non_got_ref
10752 && h
->elf
.def_dynamic
10753 && !h
->elf
.def_regular
))
10755 Elf_Internal_Rela outrel
;
10756 bfd_boolean skip
, relocate
;
10761 /* When generating a dynamic object, these relocations
10762 are copied into the output file to be resolved at run
10768 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
10769 input_section
, rel
->r_offset
);
10770 if (out_off
== (bfd_vma
) -1)
10772 else if (out_off
== (bfd_vma
) -2)
10773 skip
= TRUE
, relocate
= TRUE
;
10774 out_off
+= (input_section
->output_section
->vma
10775 + input_section
->output_offset
);
10776 outrel
.r_offset
= out_off
;
10777 outrel
.r_addend
= rel
->r_addend
;
10779 /* Optimize unaligned reloc use. */
10780 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
10781 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
10782 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
10783 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
10784 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
10785 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
10786 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
10787 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
10788 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
10791 memset (&outrel
, 0, sizeof outrel
);
10792 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
10794 && r_type
!= R_PPC64_TOC
)
10795 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
10798 /* This symbol is local, or marked to become local,
10799 or this is an opd section reloc which must point
10800 at a local function. */
10801 outrel
.r_addend
+= relocation
;
10802 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
10804 if (is_opd
&& h
!= NULL
)
10806 /* Lie about opd entries. This case occurs
10807 when building shared libraries and we
10808 reference a function in another shared
10809 lib. The same thing happens for a weak
10810 definition in an application that's
10811 overridden by a strong definition in a
10812 shared lib. (I believe this is a generic
10813 bug in binutils handling of weak syms.)
10814 In these cases we won't use the opd
10815 entry in this lib. */
10816 unresolved_reloc
= FALSE
;
10818 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10820 /* We need to relocate .opd contents for ld.so.
10821 Prelink also wants simple and consistent rules
10822 for relocs. This make all RELATIVE relocs have
10823 *r_offset equal to r_addend. */
10830 if (bfd_is_abs_section (sec
))
10832 else if (sec
== NULL
|| sec
->owner
== NULL
)
10834 bfd_set_error (bfd_error_bad_value
);
10841 osec
= sec
->output_section
;
10842 indx
= elf_section_data (osec
)->dynindx
;
10844 /* We are turning this relocation into one
10845 against a section symbol, so subtract out
10846 the output section's address but not the
10847 offset of the input section in the output
10849 outrel
.r_addend
-= osec
->vma
;
10852 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
10856 sreloc
= elf_section_data (input_section
)->sreloc
;
10857 if (sreloc
== NULL
)
10860 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
10863 loc
= sreloc
->contents
;
10864 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10865 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10867 /* If this reloc is against an external symbol, it will
10868 be computed at runtime, so there's no need to do
10869 anything now. However, for the sake of prelink ensure
10870 that the section contents are a known value. */
10873 unresolved_reloc
= FALSE
;
10874 /* The value chosen here is quite arbitrary as ld.so
10875 ignores section contents except for the special
10876 case of .opd where the contents might be accessed
10877 before relocation. Choose zero, as that won't
10878 cause reloc overflow. */
10881 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10882 to improve backward compatibility with older
10884 if (r_type
== R_PPC64_ADDR64
)
10885 addend
= outrel
.r_addend
;
10886 /* Adjust pc_relative relocs to have zero in *r_offset. */
10887 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
10888 addend
= (input_section
->output_section
->vma
10889 + input_section
->output_offset
10896 case R_PPC64_GLOB_DAT
:
10897 case R_PPC64_JMP_SLOT
:
10898 case R_PPC64_RELATIVE
:
10899 /* We shouldn't ever see these dynamic relocs in relocatable
10901 /* Fall through. */
10903 case R_PPC64_PLTGOT16
:
10904 case R_PPC64_PLTGOT16_DS
:
10905 case R_PPC64_PLTGOT16_HA
:
10906 case R_PPC64_PLTGOT16_HI
:
10907 case R_PPC64_PLTGOT16_LO
:
10908 case R_PPC64_PLTGOT16_LO_DS
:
10909 case R_PPC64_PLTREL32
:
10910 case R_PPC64_PLTREL64
:
10911 /* These ones haven't been implemented yet. */
10913 (*_bfd_error_handler
)
10914 (_("%B: relocation %s is not supported for symbol %s."),
10916 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
10918 bfd_set_error (bfd_error_invalid_operation
);
10923 /* Do any further special processing. */
10929 case R_PPC64_ADDR16_HA
:
10930 case R_PPC64_ADDR16_HIGHERA
:
10931 case R_PPC64_ADDR16_HIGHESTA
:
10932 case R_PPC64_GOT16_HA
:
10933 case R_PPC64_PLTGOT16_HA
:
10934 case R_PPC64_PLT16_HA
:
10935 case R_PPC64_TOC16_HA
:
10936 case R_PPC64_SECTOFF_HA
:
10937 case R_PPC64_TPREL16_HA
:
10938 case R_PPC64_DTPREL16_HA
:
10939 case R_PPC64_GOT_TLSGD16_HA
:
10940 case R_PPC64_GOT_TLSLD16_HA
:
10941 case R_PPC64_GOT_TPREL16_HA
:
10942 case R_PPC64_GOT_DTPREL16_HA
:
10943 case R_PPC64_TPREL16_HIGHER
:
10944 case R_PPC64_TPREL16_HIGHERA
:
10945 case R_PPC64_TPREL16_HIGHEST
:
10946 case R_PPC64_TPREL16_HIGHESTA
:
10947 case R_PPC64_DTPREL16_HIGHER
:
10948 case R_PPC64_DTPREL16_HIGHERA
:
10949 case R_PPC64_DTPREL16_HIGHEST
:
10950 case R_PPC64_DTPREL16_HIGHESTA
:
10951 /* It's just possible that this symbol is a weak symbol
10952 that's not actually defined anywhere. In that case,
10953 'sec' would be NULL, and we should leave the symbol
10954 alone (it will be set to zero elsewhere in the link). */
10956 /* Add 0x10000 if sign bit in 0:15 is set.
10957 Bits 0:15 are not used. */
10961 case R_PPC64_ADDR16_DS
:
10962 case R_PPC64_ADDR16_LO_DS
:
10963 case R_PPC64_GOT16_DS
:
10964 case R_PPC64_GOT16_LO_DS
:
10965 case R_PPC64_PLT16_LO_DS
:
10966 case R_PPC64_SECTOFF_DS
:
10967 case R_PPC64_SECTOFF_LO_DS
:
10968 case R_PPC64_TOC16_DS
:
10969 case R_PPC64_TOC16_LO_DS
:
10970 case R_PPC64_PLTGOT16_DS
:
10971 case R_PPC64_PLTGOT16_LO_DS
:
10972 case R_PPC64_GOT_TPREL16_DS
:
10973 case R_PPC64_GOT_TPREL16_LO_DS
:
10974 case R_PPC64_GOT_DTPREL16_DS
:
10975 case R_PPC64_GOT_DTPREL16_LO_DS
:
10976 case R_PPC64_TPREL16_DS
:
10977 case R_PPC64_TPREL16_LO_DS
:
10978 case R_PPC64_DTPREL16_DS
:
10979 case R_PPC64_DTPREL16_LO_DS
:
10980 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
10982 /* If this reloc is against an lq insn, then the value must be
10983 a multiple of 16. This is somewhat of a hack, but the
10984 "correct" way to do this by defining _DQ forms of all the
10985 _DS relocs bloats all reloc switches in this file. It
10986 doesn't seem to make much sense to use any of these relocs
10987 in data, so testing the insn should be safe. */
10988 if ((insn
& (0x3f << 26)) == (56u << 26))
10990 if (((relocation
+ addend
) & mask
) != 0)
10992 (*_bfd_error_handler
)
10993 (_("%B: error: relocation %s not a multiple of %d"),
10995 ppc64_elf_howto_table
[r_type
]->name
,
10997 bfd_set_error (bfd_error_bad_value
);
11004 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11005 because such sections are not SEC_ALLOC and thus ld.so will
11006 not process them. */
11007 if (unresolved_reloc
11008 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
11009 && h
->elf
.def_dynamic
))
11011 (*_bfd_error_handler
)
11012 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11015 (long) rel
->r_offset
,
11016 ppc64_elf_howto_table
[(int) r_type
]->name
,
11017 h
->elf
.root
.root
.string
);
11021 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
11029 if (r
!= bfd_reloc_ok
)
11031 if (sym_name
== NULL
)
11032 sym_name
= "(null)";
11033 if (r
== bfd_reloc_overflow
)
11038 && h
->elf
.root
.type
== bfd_link_hash_undefweak
11039 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
11041 /* Assume this is a call protected by other code that
11042 detects the symbol is undefined. If this is the case,
11043 we can safely ignore the overflow. If not, the
11044 program is hosed anyway, and a little warning isn't
11050 if (!((*info
->callbacks
->reloc_overflow
)
11051 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
11052 ppc64_elf_howto_table
[r_type
]->name
,
11053 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
11058 (*_bfd_error_handler
)
11059 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11062 (long) rel
->r_offset
,
11063 ppc64_elf_howto_table
[r_type
]->name
,
11071 /* If we're emitting relocations, then shortly after this function
11072 returns, reloc offsets and addends for this section will be
11073 adjusted. Worse, reloc symbol indices will be for the output
11074 file rather than the input. Save a copy of the relocs for
11075 opd_entry_value. */
11076 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
11079 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
11080 rel
= bfd_alloc (input_bfd
, amt
);
11081 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
11082 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
11085 memcpy (rel
, relocs
, amt
);
11090 /* Adjust the value of any local symbols in opd sections. */
11093 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
11094 const char *name ATTRIBUTE_UNUSED
,
11095 Elf_Internal_Sym
*elfsym
,
11096 asection
*input_sec
,
11097 struct elf_link_hash_entry
*h
)
11099 long *opd_adjust
, adjust
;
11105 opd_adjust
= get_opd_info (input_sec
);
11106 if (opd_adjust
== NULL
)
11109 value
= elfsym
->st_value
- input_sec
->output_offset
;
11110 if (!info
->relocatable
)
11111 value
-= input_sec
->output_section
->vma
;
11113 adjust
= opd_adjust
[value
/ 8];
11115 elfsym
->st_value
= 0;
11117 elfsym
->st_value
+= adjust
;
11121 /* Finish up dynamic symbol handling. We set the contents of various
11122 dynamic sections here. */
11125 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
11126 struct bfd_link_info
*info
,
11127 struct elf_link_hash_entry
*h
,
11128 Elf_Internal_Sym
*sym
)
11130 struct ppc_link_hash_table
*htab
;
11131 struct plt_entry
*ent
;
11132 Elf_Internal_Rela rela
;
11135 htab
= ppc_hash_table (info
);
11137 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
11138 if (ent
->plt
.offset
!= (bfd_vma
) -1)
11140 /* This symbol has an entry in the procedure linkage
11141 table. Set it up. */
11143 if (htab
->plt
== NULL
11144 || htab
->relplt
== NULL
11145 || htab
->glink
== NULL
)
11148 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11149 fill in the PLT entry. */
11150 rela
.r_offset
= (htab
->plt
->output_section
->vma
11151 + htab
->plt
->output_offset
11152 + ent
->plt
.offset
);
11153 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
11154 rela
.r_addend
= ent
->addend
;
11156 loc
= htab
->relplt
->contents
;
11157 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
11158 * sizeof (Elf64_External_Rela
));
11159 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
11164 Elf_Internal_Rela rela
;
11167 /* This symbol needs a copy reloc. Set it up. */
11169 if (h
->dynindx
== -1
11170 || (h
->root
.type
!= bfd_link_hash_defined
11171 && h
->root
.type
!= bfd_link_hash_defweak
)
11172 || htab
->relbss
== NULL
)
11175 rela
.r_offset
= (h
->root
.u
.def
.value
11176 + h
->root
.u
.def
.section
->output_section
->vma
11177 + h
->root
.u
.def
.section
->output_offset
);
11178 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
11180 loc
= htab
->relbss
->contents
;
11181 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
11182 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
11185 /* Mark some specially defined symbols as absolute. */
11186 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
11187 sym
->st_shndx
= SHN_ABS
;
11192 /* Used to decide how to sort relocs in an optimal manner for the
11193 dynamic linker, before writing them out. */
11195 static enum elf_reloc_type_class
11196 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
11198 enum elf_ppc64_reloc_type r_type
;
11200 r_type
= ELF64_R_TYPE (rela
->r_info
);
11203 case R_PPC64_RELATIVE
:
11204 return reloc_class_relative
;
11205 case R_PPC64_JMP_SLOT
:
11206 return reloc_class_plt
;
11208 return reloc_class_copy
;
11210 return reloc_class_normal
;
11214 /* Finish up the dynamic sections. */
11217 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
11218 struct bfd_link_info
*info
)
11220 struct ppc_link_hash_table
*htab
;
11224 htab
= ppc_hash_table (info
);
11225 dynobj
= htab
->elf
.dynobj
;
11226 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
11228 if (htab
->elf
.dynamic_sections_created
)
11230 Elf64_External_Dyn
*dyncon
, *dynconend
;
11232 if (sdyn
== NULL
|| htab
->got
== NULL
)
11235 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
11236 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
11237 for (; dyncon
< dynconend
; dyncon
++)
11239 Elf_Internal_Dyn dyn
;
11242 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
11249 case DT_PPC64_GLINK
:
11251 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11252 /* We stupidly defined DT_PPC64_GLINK to be the start
11253 of glink rather than the first entry point, which is
11254 what ld.so needs, and now have a bigger stub to
11255 support automatic multiple TOCs. */
11256 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
11260 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11263 dyn
.d_un
.d_ptr
= s
->vma
;
11266 case DT_PPC64_OPDSZ
:
11267 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11270 dyn
.d_un
.d_val
= s
->size
;
11275 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11280 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11284 dyn
.d_un
.d_val
= htab
->relplt
->size
;
11288 /* Don't count procedure linkage table relocs in the
11289 overall reloc count. */
11293 dyn
.d_un
.d_val
-= s
->size
;
11297 /* We may not be using the standard ELF linker script.
11298 If .rela.plt is the first .rela section, we adjust
11299 DT_RELA to not include it. */
11303 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
11305 dyn
.d_un
.d_ptr
+= s
->size
;
11309 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11313 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
11315 /* Fill in the first entry in the global offset table.
11316 We use it to hold the link-time TOCbase. */
11317 bfd_put_64 (output_bfd
,
11318 elf_gp (output_bfd
) + TOC_BASE_OFF
,
11319 htab
->got
->contents
);
11321 /* Set .got entry size. */
11322 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
11325 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
11327 /* Set .plt entry size. */
11328 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
11332 /* We need to handle writing out multiple GOT sections ourselves,
11333 since we didn't add them to DYNOBJ. We know dynobj is the first
11335 while ((dynobj
= dynobj
->link_next
) != NULL
)
11339 if (!is_ppc64_elf_target (dynobj
->xvec
))
11342 s
= ppc64_elf_tdata (dynobj
)->got
;
11345 && s
->output_section
!= bfd_abs_section_ptr
11346 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
11347 s
->contents
, s
->output_offset
,
11350 s
= ppc64_elf_tdata (dynobj
)->relgot
;
11353 && s
->output_section
!= bfd_abs_section_ptr
11354 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
11355 s
->contents
, s
->output_offset
,
11363 #include "elf64-target.h"