1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* The 64-bit PowerPC ELF ABI may be found at
23 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
24 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
31 #include "elf/ppc64.h"
32 #include "elf64-ppc.h"
34 static bfd_reloc_status_type ppc64_elf_ha_reloc
35 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
36 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
37 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
38 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_toc_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_toc64_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
53 #define TARGET_LITTLE_NAME "elf64-powerpcle"
54 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
55 #define TARGET_BIG_NAME "elf64-powerpc"
56 #define ELF_ARCH bfd_arch_powerpc
57 #define ELF_MACHINE_CODE EM_PPC64
58 #define ELF_MAXPAGESIZE 0x10000
59 #define elf_info_to_howto ppc64_elf_info_to_howto
61 #define elf_backend_want_got_sym 0
62 #define elf_backend_want_plt_sym 0
63 #define elf_backend_plt_alignment 3
64 #define elf_backend_plt_not_loaded 1
65 #define elf_backend_got_symbol_offset 0
66 #define elf_backend_got_header_size 8
67 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
68 #define elf_backend_can_gc_sections 1
69 #define elf_backend_can_refcount 1
70 #define elf_backend_rela_normal 1
72 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
73 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
74 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
75 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
76 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
78 #define elf_backend_object_p ppc64_elf_object_p
79 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
80 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
81 #define elf_backend_check_relocs ppc64_elf_check_relocs
82 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
83 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
84 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
85 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
86 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
87 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
88 #define elf_backend_relocate_section ppc64_elf_relocate_section
89 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
90 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
91 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
93 /* The name of the dynamic interpreter. This is put in the .interp
95 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
97 /* The size in bytes of an entry in the procedure linkage table. */
98 #define PLT_ENTRY_SIZE 24
100 /* The initial size of the plt reserved for the dynamic linker. */
101 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
103 /* TOC base pointers offset from start of TOC. */
104 #define TOC_BASE_OFF 0x8000
106 /* Offset of tp and dtp pointers from start of TLS block. */
107 #define TP_OFFSET 0x7000
108 #define DTP_OFFSET 0x8000
110 /* .plt call stub instructions. The normal stub is like this, but
111 sometimes the .plt entry crosses a 64k boundary and we need to
112 insert an addis to adjust r12. */
113 #define PLT_CALL_STUB_SIZE (7*4)
114 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
115 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
116 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
117 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
118 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
119 /* ld %r11,xxx+16@l(%r12) */
120 #define BCTR 0x4e800420 /* bctr */
123 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
124 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
126 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
128 /* glink call stub instructions. We enter with the index in R0, and the
129 address of glink entry in CTR. From that, we can calculate PLT0. */
130 #define GLINK_CALL_STUB_SIZE (16*4)
131 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
132 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
133 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
134 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
135 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
136 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
137 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
138 /* sub %r12,%r12,%r11 */
139 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
140 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
141 /* ld %r11,xxx@l(%r12) */
142 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
145 /* ld %r11,16(%r12) */
149 #define NOP 0x60000000
151 /* Some other nops. */
152 #define CROR_151515 0x4def7b82
153 #define CROR_313131 0x4ffffb82
155 /* .glink entries for the first 32k functions are two instructions. */
156 #define LI_R0_0 0x38000000 /* li %r0,0 */
157 #define B_DOT 0x48000000 /* b . */
159 /* After that, we need two instructions to load the index, followed by
161 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
162 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
164 /* Instructions to save and restore floating point regs. */
165 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
166 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
167 #define BLR 0x4e800020 /* blr */
169 /* Since .opd is an array of descriptors and each entry will end up
170 with identical R_PPC64_RELATIVE relocs, there is really no need to
171 propagate .opd relocs; The dynamic linker should be taught to
172 relocate .opd without reloc entries. */
173 #ifndef NO_OPD_RELOCS
174 #define NO_OPD_RELOCS 0
177 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
179 /* Relocation HOWTO's. */
180 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
182 static reloc_howto_type ppc64_elf_howto_raw
[] = {
183 /* This reloc does nothing. */
184 HOWTO (R_PPC64_NONE
, /* type */
186 2, /* size (0 = byte, 1 = short, 2 = long) */
188 FALSE
, /* pc_relative */
190 complain_overflow_dont
, /* complain_on_overflow */
191 bfd_elf_generic_reloc
, /* special_function */
192 "R_PPC64_NONE", /* name */
193 FALSE
, /* partial_inplace */
196 FALSE
), /* pcrel_offset */
198 /* A standard 32 bit relocation. */
199 HOWTO (R_PPC64_ADDR32
, /* type */
201 2, /* size (0 = byte, 1 = short, 2 = long) */
203 FALSE
, /* pc_relative */
205 complain_overflow_bitfield
, /* complain_on_overflow */
206 bfd_elf_generic_reloc
, /* special_function */
207 "R_PPC64_ADDR32", /* name */
208 FALSE
, /* partial_inplace */
210 0xffffffff, /* dst_mask */
211 FALSE
), /* pcrel_offset */
213 /* An absolute 26 bit branch; the lower two bits must be zero.
214 FIXME: we don't check that, we just clear them. */
215 HOWTO (R_PPC64_ADDR24
, /* type */
217 2, /* size (0 = byte, 1 = short, 2 = long) */
219 FALSE
, /* pc_relative */
221 complain_overflow_bitfield
, /* complain_on_overflow */
222 bfd_elf_generic_reloc
, /* special_function */
223 "R_PPC64_ADDR24", /* name */
224 FALSE
, /* partial_inplace */
226 0x03fffffc, /* dst_mask */
227 FALSE
), /* pcrel_offset */
229 /* A standard 16 bit relocation. */
230 HOWTO (R_PPC64_ADDR16
, /* type */
232 1, /* size (0 = byte, 1 = short, 2 = long) */
234 FALSE
, /* pc_relative */
236 complain_overflow_bitfield
, /* complain_on_overflow */
237 bfd_elf_generic_reloc
, /* special_function */
238 "R_PPC64_ADDR16", /* name */
239 FALSE
, /* partial_inplace */
241 0xffff, /* dst_mask */
242 FALSE
), /* pcrel_offset */
244 /* A 16 bit relocation without overflow. */
245 HOWTO (R_PPC64_ADDR16_LO
, /* type */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE
, /* pc_relative */
251 complain_overflow_dont
,/* complain_on_overflow */
252 bfd_elf_generic_reloc
, /* special_function */
253 "R_PPC64_ADDR16_LO", /* name */
254 FALSE
, /* partial_inplace */
256 0xffff, /* dst_mask */
257 FALSE
), /* pcrel_offset */
259 /* Bits 16-31 of an address. */
260 HOWTO (R_PPC64_ADDR16_HI
, /* type */
262 1, /* size (0 = byte, 1 = short, 2 = long) */
264 FALSE
, /* pc_relative */
266 complain_overflow_dont
, /* complain_on_overflow */
267 bfd_elf_generic_reloc
, /* special_function */
268 "R_PPC64_ADDR16_HI", /* name */
269 FALSE
, /* partial_inplace */
271 0xffff, /* dst_mask */
272 FALSE
), /* pcrel_offset */
274 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
275 bits, treated as a signed number, is negative. */
276 HOWTO (R_PPC64_ADDR16_HA
, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE
, /* pc_relative */
282 complain_overflow_dont
, /* complain_on_overflow */
283 ppc64_elf_ha_reloc
, /* special_function */
284 "R_PPC64_ADDR16_HA", /* name */
285 FALSE
, /* partial_inplace */
287 0xffff, /* dst_mask */
288 FALSE
), /* pcrel_offset */
290 /* An absolute 16 bit branch; the lower two bits must be zero.
291 FIXME: we don't check that, we just clear them. */
292 HOWTO (R_PPC64_ADDR14
, /* type */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
296 FALSE
, /* pc_relative */
298 complain_overflow_bitfield
, /* complain_on_overflow */
299 bfd_elf_generic_reloc
, /* special_function */
300 "R_PPC64_ADDR14", /* name */
301 FALSE
, /* partial_inplace */
303 0x0000fffc, /* dst_mask */
304 FALSE
), /* pcrel_offset */
306 /* An absolute 16 bit branch, for which bit 10 should be set to
307 indicate that the branch is expected to be taken. The lower two
308 bits must be zero. */
309 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
311 2, /* size (0 = byte, 1 = short, 2 = long) */
313 FALSE
, /* pc_relative */
315 complain_overflow_bitfield
, /* complain_on_overflow */
316 ppc64_elf_brtaken_reloc
, /* special_function */
317 "R_PPC64_ADDR14_BRTAKEN",/* name */
318 FALSE
, /* partial_inplace */
320 0x0000fffc, /* dst_mask */
321 FALSE
), /* pcrel_offset */
323 /* An absolute 16 bit branch, for which bit 10 should be set to
324 indicate that the branch is not expected to be taken. The lower
325 two bits must be zero. */
326 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
328 2, /* size (0 = byte, 1 = short, 2 = long) */
330 FALSE
, /* pc_relative */
332 complain_overflow_bitfield
, /* complain_on_overflow */
333 ppc64_elf_brtaken_reloc
, /* special_function */
334 "R_PPC64_ADDR14_BRNTAKEN",/* name */
335 FALSE
, /* partial_inplace */
337 0x0000fffc, /* dst_mask */
338 FALSE
), /* pcrel_offset */
340 /* A relative 26 bit branch; the lower two bits must be zero. */
341 HOWTO (R_PPC64_REL24
, /* type */
343 2, /* size (0 = byte, 1 = short, 2 = long) */
345 TRUE
, /* pc_relative */
347 complain_overflow_signed
, /* complain_on_overflow */
348 bfd_elf_generic_reloc
, /* special_function */
349 "R_PPC64_REL24", /* name */
350 FALSE
, /* partial_inplace */
352 0x03fffffc, /* dst_mask */
353 TRUE
), /* pcrel_offset */
355 /* A relative 16 bit branch; the lower two bits must be zero. */
356 HOWTO (R_PPC64_REL14
, /* type */
358 2, /* size (0 = byte, 1 = short, 2 = long) */
360 TRUE
, /* pc_relative */
362 complain_overflow_signed
, /* complain_on_overflow */
363 bfd_elf_generic_reloc
, /* special_function */
364 "R_PPC64_REL14", /* name */
365 FALSE
, /* partial_inplace */
367 0x0000fffc, /* dst_mask */
368 TRUE
), /* pcrel_offset */
370 /* A relative 16 bit branch. Bit 10 should be set to indicate that
371 the branch is expected to be taken. The lower two bits must be
373 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
375 2, /* size (0 = byte, 1 = short, 2 = long) */
377 TRUE
, /* pc_relative */
379 complain_overflow_signed
, /* complain_on_overflow */
380 ppc64_elf_brtaken_reloc
, /* special_function */
381 "R_PPC64_REL14_BRTAKEN", /* name */
382 FALSE
, /* partial_inplace */
384 0x0000fffc, /* dst_mask */
385 TRUE
), /* pcrel_offset */
387 /* A relative 16 bit branch. Bit 10 should be set to indicate that
388 the branch is not expected to be taken. The lower two bits must
390 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
394 TRUE
, /* pc_relative */
396 complain_overflow_signed
, /* complain_on_overflow */
397 ppc64_elf_brtaken_reloc
, /* special_function */
398 "R_PPC64_REL14_BRNTAKEN",/* name */
399 FALSE
, /* partial_inplace */
401 0x0000fffc, /* dst_mask */
402 TRUE
), /* pcrel_offset */
404 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
406 HOWTO (R_PPC64_GOT16
, /* type */
408 1, /* size (0 = byte, 1 = short, 2 = long) */
410 FALSE
, /* pc_relative */
412 complain_overflow_signed
, /* complain_on_overflow */
413 ppc64_elf_unhandled_reloc
, /* special_function */
414 "R_PPC64_GOT16", /* name */
415 FALSE
, /* partial_inplace */
417 0xffff, /* dst_mask */
418 FALSE
), /* pcrel_offset */
420 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
422 HOWTO (R_PPC64_GOT16_LO
, /* type */
424 1, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE
, /* pc_relative */
428 complain_overflow_dont
, /* complain_on_overflow */
429 ppc64_elf_unhandled_reloc
, /* special_function */
430 "R_PPC64_GOT16_LO", /* name */
431 FALSE
, /* partial_inplace */
433 0xffff, /* dst_mask */
434 FALSE
), /* pcrel_offset */
436 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
438 HOWTO (R_PPC64_GOT16_HI
, /* type */
440 1, /* size (0 = byte, 1 = short, 2 = long) */
442 FALSE
, /* pc_relative */
444 complain_overflow_dont
,/* complain_on_overflow */
445 ppc64_elf_unhandled_reloc
, /* special_function */
446 "R_PPC64_GOT16_HI", /* name */
447 FALSE
, /* partial_inplace */
449 0xffff, /* dst_mask */
450 FALSE
), /* pcrel_offset */
452 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
454 HOWTO (R_PPC64_GOT16_HA
, /* type */
456 1, /* size (0 = byte, 1 = short, 2 = long) */
458 FALSE
, /* pc_relative */
460 complain_overflow_dont
,/* complain_on_overflow */
461 ppc64_elf_unhandled_reloc
, /* special_function */
462 "R_PPC64_GOT16_HA", /* name */
463 FALSE
, /* partial_inplace */
465 0xffff, /* dst_mask */
466 FALSE
), /* pcrel_offset */
468 /* This is used only by the dynamic linker. The symbol should exist
469 both in the object being run and in some shared library. The
470 dynamic linker copies the data addressed by the symbol from the
471 shared library into the object, because the object being
472 run has to have the data at some particular address. */
473 HOWTO (R_PPC64_COPY
, /* type */
475 0, /* this one is variable size */
477 FALSE
, /* pc_relative */
479 complain_overflow_dont
, /* complain_on_overflow */
480 ppc64_elf_unhandled_reloc
, /* special_function */
481 "R_PPC64_COPY", /* name */
482 FALSE
, /* partial_inplace */
485 FALSE
), /* pcrel_offset */
487 /* Like R_PPC64_ADDR64, but used when setting global offset table
489 HOWTO (R_PPC64_GLOB_DAT
, /* type */
491 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
493 FALSE
, /* pc_relative */
495 complain_overflow_dont
, /* complain_on_overflow */
496 ppc64_elf_unhandled_reloc
, /* special_function */
497 "R_PPC64_GLOB_DAT", /* name */
498 FALSE
, /* partial_inplace */
500 ONES (64), /* dst_mask */
501 FALSE
), /* pcrel_offset */
503 /* Created by the link editor. Marks a procedure linkage table
504 entry for a symbol. */
505 HOWTO (R_PPC64_JMP_SLOT
, /* type */
507 0, /* size (0 = byte, 1 = short, 2 = long) */
509 FALSE
, /* pc_relative */
511 complain_overflow_dont
, /* complain_on_overflow */
512 ppc64_elf_unhandled_reloc
, /* special_function */
513 "R_PPC64_JMP_SLOT", /* name */
514 FALSE
, /* partial_inplace */
517 FALSE
), /* pcrel_offset */
519 /* Used only by the dynamic linker. When the object is run, this
520 doubleword64 is set to the load address of the object, plus the
522 HOWTO (R_PPC64_RELATIVE
, /* type */
524 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
526 FALSE
, /* pc_relative */
528 complain_overflow_dont
, /* complain_on_overflow */
529 bfd_elf_generic_reloc
, /* special_function */
530 "R_PPC64_RELATIVE", /* name */
531 FALSE
, /* partial_inplace */
533 ONES (64), /* dst_mask */
534 FALSE
), /* pcrel_offset */
536 /* Like R_PPC64_ADDR32, but may be unaligned. */
537 HOWTO (R_PPC64_UADDR32
, /* type */
539 2, /* size (0 = byte, 1 = short, 2 = long) */
541 FALSE
, /* pc_relative */
543 complain_overflow_bitfield
, /* complain_on_overflow */
544 bfd_elf_generic_reloc
, /* special_function */
545 "R_PPC64_UADDR32", /* name */
546 FALSE
, /* partial_inplace */
548 0xffffffff, /* dst_mask */
549 FALSE
), /* pcrel_offset */
551 /* Like R_PPC64_ADDR16, but may be unaligned. */
552 HOWTO (R_PPC64_UADDR16
, /* type */
554 1, /* size (0 = byte, 1 = short, 2 = long) */
556 FALSE
, /* pc_relative */
558 complain_overflow_bitfield
, /* complain_on_overflow */
559 bfd_elf_generic_reloc
, /* special_function */
560 "R_PPC64_UADDR16", /* name */
561 FALSE
, /* partial_inplace */
563 0xffff, /* dst_mask */
564 FALSE
), /* pcrel_offset */
566 /* 32-bit PC relative. */
567 HOWTO (R_PPC64_REL32
, /* type */
569 2, /* size (0 = byte, 1 = short, 2 = long) */
571 TRUE
, /* pc_relative */
573 /* FIXME: Verify. Was complain_overflow_bitfield. */
574 complain_overflow_signed
, /* complain_on_overflow */
575 bfd_elf_generic_reloc
, /* special_function */
576 "R_PPC64_REL32", /* name */
577 FALSE
, /* partial_inplace */
579 0xffffffff, /* dst_mask */
580 TRUE
), /* pcrel_offset */
582 /* 32-bit relocation to the symbol's procedure linkage table. */
583 HOWTO (R_PPC64_PLT32
, /* type */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
587 FALSE
, /* pc_relative */
589 complain_overflow_bitfield
, /* complain_on_overflow */
590 ppc64_elf_unhandled_reloc
, /* special_function */
591 "R_PPC64_PLT32", /* name */
592 FALSE
, /* partial_inplace */
594 0xffffffff, /* dst_mask */
595 FALSE
), /* pcrel_offset */
597 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
598 FIXME: R_PPC64_PLTREL32 not supported. */
599 HOWTO (R_PPC64_PLTREL32
, /* type */
601 2, /* size (0 = byte, 1 = short, 2 = long) */
603 TRUE
, /* pc_relative */
605 complain_overflow_signed
, /* complain_on_overflow */
606 bfd_elf_generic_reloc
, /* special_function */
607 "R_PPC64_PLTREL32", /* name */
608 FALSE
, /* partial_inplace */
610 0xffffffff, /* dst_mask */
611 TRUE
), /* pcrel_offset */
613 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
615 HOWTO (R_PPC64_PLT16_LO
, /* type */
617 1, /* size (0 = byte, 1 = short, 2 = long) */
619 FALSE
, /* pc_relative */
621 complain_overflow_dont
, /* complain_on_overflow */
622 ppc64_elf_unhandled_reloc
, /* special_function */
623 "R_PPC64_PLT16_LO", /* name */
624 FALSE
, /* partial_inplace */
626 0xffff, /* dst_mask */
627 FALSE
), /* pcrel_offset */
629 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
631 HOWTO (R_PPC64_PLT16_HI
, /* type */
633 1, /* size (0 = byte, 1 = short, 2 = long) */
635 FALSE
, /* pc_relative */
637 complain_overflow_dont
, /* complain_on_overflow */
638 ppc64_elf_unhandled_reloc
, /* special_function */
639 "R_PPC64_PLT16_HI", /* name */
640 FALSE
, /* partial_inplace */
642 0xffff, /* dst_mask */
643 FALSE
), /* pcrel_offset */
645 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
647 HOWTO (R_PPC64_PLT16_HA
, /* type */
649 1, /* size (0 = byte, 1 = short, 2 = long) */
651 FALSE
, /* pc_relative */
653 complain_overflow_dont
, /* complain_on_overflow */
654 ppc64_elf_unhandled_reloc
, /* special_function */
655 "R_PPC64_PLT16_HA", /* name */
656 FALSE
, /* partial_inplace */
658 0xffff, /* dst_mask */
659 FALSE
), /* pcrel_offset */
661 /* 16-bit section relative relocation. */
662 HOWTO (R_PPC64_SECTOFF
, /* type */
664 1, /* size (0 = byte, 1 = short, 2 = long) */
666 FALSE
, /* pc_relative */
668 complain_overflow_bitfield
, /* complain_on_overflow */
669 ppc64_elf_sectoff_reloc
, /* special_function */
670 "R_PPC64_SECTOFF", /* name */
671 FALSE
, /* partial_inplace */
673 0xffff, /* dst_mask */
674 FALSE
), /* pcrel_offset */
676 /* Like R_PPC64_SECTOFF, but no overflow warning. */
677 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE
, /* pc_relative */
683 complain_overflow_dont
, /* complain_on_overflow */
684 ppc64_elf_sectoff_reloc
, /* special_function */
685 "R_PPC64_SECTOFF_LO", /* name */
686 FALSE
, /* partial_inplace */
688 0xffff, /* dst_mask */
689 FALSE
), /* pcrel_offset */
691 /* 16-bit upper half section relative relocation. */
692 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
694 1, /* size (0 = byte, 1 = short, 2 = long) */
696 FALSE
, /* pc_relative */
698 complain_overflow_dont
, /* complain_on_overflow */
699 ppc64_elf_sectoff_reloc
, /* special_function */
700 "R_PPC64_SECTOFF_HI", /* name */
701 FALSE
, /* partial_inplace */
703 0xffff, /* dst_mask */
704 FALSE
), /* pcrel_offset */
706 /* 16-bit upper half adjusted section relative relocation. */
707 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
709 1, /* size (0 = byte, 1 = short, 2 = long) */
711 FALSE
, /* pc_relative */
713 complain_overflow_dont
, /* complain_on_overflow */
714 ppc64_elf_sectoff_ha_reloc
, /* special_function */
715 "R_PPC64_SECTOFF_HA", /* name */
716 FALSE
, /* partial_inplace */
718 0xffff, /* dst_mask */
719 FALSE
), /* pcrel_offset */
721 /* Like R_PPC64_REL24 without touching the two least significant bits. */
722 HOWTO (R_PPC64_REL30
, /* type */
724 2, /* size (0 = byte, 1 = short, 2 = long) */
726 TRUE
, /* pc_relative */
728 complain_overflow_dont
, /* complain_on_overflow */
729 bfd_elf_generic_reloc
, /* special_function */
730 "R_PPC64_REL30", /* name */
731 FALSE
, /* partial_inplace */
733 0xfffffffc, /* dst_mask */
734 TRUE
), /* pcrel_offset */
736 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
738 /* A standard 64-bit relocation. */
739 HOWTO (R_PPC64_ADDR64
, /* type */
741 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
743 FALSE
, /* pc_relative */
745 complain_overflow_dont
, /* complain_on_overflow */
746 bfd_elf_generic_reloc
, /* special_function */
747 "R_PPC64_ADDR64", /* name */
748 FALSE
, /* partial_inplace */
750 ONES (64), /* dst_mask */
751 FALSE
), /* pcrel_offset */
753 /* The bits 32-47 of an address. */
754 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
756 1, /* size (0 = byte, 1 = short, 2 = long) */
758 FALSE
, /* pc_relative */
760 complain_overflow_dont
, /* complain_on_overflow */
761 bfd_elf_generic_reloc
, /* special_function */
762 "R_PPC64_ADDR16_HIGHER", /* name */
763 FALSE
, /* partial_inplace */
765 0xffff, /* dst_mask */
766 FALSE
), /* pcrel_offset */
768 /* The bits 32-47 of an address, plus 1 if the contents of the low
769 16 bits, treated as a signed number, is negative. */
770 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
772 1, /* size (0 = byte, 1 = short, 2 = long) */
774 FALSE
, /* pc_relative */
776 complain_overflow_dont
, /* complain_on_overflow */
777 ppc64_elf_ha_reloc
, /* special_function */
778 "R_PPC64_ADDR16_HIGHERA", /* name */
779 FALSE
, /* partial_inplace */
781 0xffff, /* dst_mask */
782 FALSE
), /* pcrel_offset */
784 /* The bits 48-63 of an address. */
785 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
787 1, /* size (0 = byte, 1 = short, 2 = long) */
789 FALSE
, /* pc_relative */
791 complain_overflow_dont
, /* complain_on_overflow */
792 bfd_elf_generic_reloc
, /* special_function */
793 "R_PPC64_ADDR16_HIGHEST", /* name */
794 FALSE
, /* partial_inplace */
796 0xffff, /* dst_mask */
797 FALSE
), /* pcrel_offset */
799 /* The bits 48-63 of an address, plus 1 if the contents of the low
800 16 bits, treated as a signed number, is negative. */
801 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
803 1, /* size (0 = byte, 1 = short, 2 = long) */
805 FALSE
, /* pc_relative */
807 complain_overflow_dont
, /* complain_on_overflow */
808 ppc64_elf_ha_reloc
, /* special_function */
809 "R_PPC64_ADDR16_HIGHESTA", /* name */
810 FALSE
, /* partial_inplace */
812 0xffff, /* dst_mask */
813 FALSE
), /* pcrel_offset */
815 /* Like ADDR64, but may be unaligned. */
816 HOWTO (R_PPC64_UADDR64
, /* type */
818 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
820 FALSE
, /* pc_relative */
822 complain_overflow_dont
, /* complain_on_overflow */
823 bfd_elf_generic_reloc
, /* special_function */
824 "R_PPC64_UADDR64", /* name */
825 FALSE
, /* partial_inplace */
827 ONES (64), /* dst_mask */
828 FALSE
), /* pcrel_offset */
830 /* 64-bit relative relocation. */
831 HOWTO (R_PPC64_REL64
, /* type */
833 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
835 TRUE
, /* pc_relative */
837 complain_overflow_dont
, /* complain_on_overflow */
838 bfd_elf_generic_reloc
, /* special_function */
839 "R_PPC64_REL64", /* name */
840 FALSE
, /* partial_inplace */
842 ONES (64), /* dst_mask */
843 TRUE
), /* pcrel_offset */
845 /* 64-bit relocation to the symbol's procedure linkage table. */
846 HOWTO (R_PPC64_PLT64
, /* type */
848 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
850 FALSE
, /* pc_relative */
852 complain_overflow_dont
, /* complain_on_overflow */
853 ppc64_elf_unhandled_reloc
, /* special_function */
854 "R_PPC64_PLT64", /* name */
855 FALSE
, /* partial_inplace */
857 ONES (64), /* dst_mask */
858 FALSE
), /* pcrel_offset */
860 /* 64-bit PC relative relocation to the symbol's procedure linkage
862 /* FIXME: R_PPC64_PLTREL64 not supported. */
863 HOWTO (R_PPC64_PLTREL64
, /* type */
865 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
867 TRUE
, /* pc_relative */
869 complain_overflow_dont
, /* complain_on_overflow */
870 ppc64_elf_unhandled_reloc
, /* special_function */
871 "R_PPC64_PLTREL64", /* name */
872 FALSE
, /* partial_inplace */
874 ONES (64), /* dst_mask */
875 TRUE
), /* pcrel_offset */
877 /* 16 bit TOC-relative relocation. */
879 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
880 HOWTO (R_PPC64_TOC16
, /* type */
882 1, /* size (0 = byte, 1 = short, 2 = long) */
884 FALSE
, /* pc_relative */
886 complain_overflow_signed
, /* complain_on_overflow */
887 ppc64_elf_toc_reloc
, /* special_function */
888 "R_PPC64_TOC16", /* name */
889 FALSE
, /* partial_inplace */
891 0xffff, /* dst_mask */
892 FALSE
), /* pcrel_offset */
894 /* 16 bit TOC-relative relocation without overflow. */
896 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
897 HOWTO (R_PPC64_TOC16_LO
, /* type */
899 1, /* size (0 = byte, 1 = short, 2 = long) */
901 FALSE
, /* pc_relative */
903 complain_overflow_dont
, /* complain_on_overflow */
904 ppc64_elf_toc_reloc
, /* special_function */
905 "R_PPC64_TOC16_LO", /* name */
906 FALSE
, /* partial_inplace */
908 0xffff, /* dst_mask */
909 FALSE
), /* pcrel_offset */
911 /* 16 bit TOC-relative relocation, high 16 bits. */
913 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
914 HOWTO (R_PPC64_TOC16_HI
, /* type */
916 1, /* size (0 = byte, 1 = short, 2 = long) */
918 FALSE
, /* pc_relative */
920 complain_overflow_dont
, /* complain_on_overflow */
921 ppc64_elf_toc_reloc
, /* special_function */
922 "R_PPC64_TOC16_HI", /* name */
923 FALSE
, /* partial_inplace */
925 0xffff, /* dst_mask */
926 FALSE
), /* pcrel_offset */
928 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
929 contents of the low 16 bits, treated as a signed number, is
932 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
933 HOWTO (R_PPC64_TOC16_HA
, /* type */
935 1, /* size (0 = byte, 1 = short, 2 = long) */
937 FALSE
, /* pc_relative */
939 complain_overflow_dont
, /* complain_on_overflow */
940 ppc64_elf_toc_ha_reloc
, /* special_function */
941 "R_PPC64_TOC16_HA", /* name */
942 FALSE
, /* partial_inplace */
944 0xffff, /* dst_mask */
945 FALSE
), /* pcrel_offset */
947 /* 64-bit relocation; insert value of TOC base (.TOC.). */
949 /* R_PPC64_TOC 51 doubleword64 .TOC. */
950 HOWTO (R_PPC64_TOC
, /* type */
952 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
954 FALSE
, /* pc_relative */
956 complain_overflow_bitfield
, /* complain_on_overflow */
957 ppc64_elf_toc64_reloc
, /* special_function */
958 "R_PPC64_TOC", /* name */
959 FALSE
, /* partial_inplace */
961 ONES (64), /* dst_mask */
962 FALSE
), /* pcrel_offset */
964 /* Like R_PPC64_GOT16, but also informs the link editor that the
965 value to relocate may (!) refer to a PLT entry which the link
966 editor (a) may replace with the symbol value. If the link editor
967 is unable to fully resolve the symbol, it may (b) create a PLT
968 entry and store the address to the new PLT entry in the GOT.
969 This permits lazy resolution of function symbols at run time.
970 The link editor may also skip all of this and just (c) emit a
971 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
972 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
973 HOWTO (R_PPC64_PLTGOT16
, /* type */
975 1, /* size (0 = byte, 1 = short, 2 = long) */
977 FALSE
, /* pc_relative */
979 complain_overflow_signed
, /* complain_on_overflow */
980 ppc64_elf_unhandled_reloc
, /* special_function */
981 "R_PPC64_PLTGOT16", /* name */
982 FALSE
, /* partial_inplace */
984 0xffff, /* dst_mask */
985 FALSE
), /* pcrel_offset */
987 /* Like R_PPC64_PLTGOT16, but without overflow. */
988 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
989 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
991 1, /* size (0 = byte, 1 = short, 2 = long) */
993 FALSE
, /* pc_relative */
995 complain_overflow_dont
, /* complain_on_overflow */
996 ppc64_elf_unhandled_reloc
, /* special_function */
997 "R_PPC64_PLTGOT16_LO", /* name */
998 FALSE
, /* partial_inplace */
1000 0xffff, /* dst_mask */
1001 FALSE
), /* pcrel_offset */
1003 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1004 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1005 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1006 16, /* rightshift */
1007 1, /* size (0 = byte, 1 = short, 2 = long) */
1009 FALSE
, /* pc_relative */
1011 complain_overflow_dont
, /* complain_on_overflow */
1012 ppc64_elf_unhandled_reloc
, /* special_function */
1013 "R_PPC64_PLTGOT16_HI", /* name */
1014 FALSE
, /* partial_inplace */
1016 0xffff, /* dst_mask */
1017 FALSE
), /* pcrel_offset */
1019 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1020 1 if the contents of the low 16 bits, treated as a signed number,
1022 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1023 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1024 16, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1027 FALSE
, /* pc_relative */
1029 complain_overflow_dont
,/* complain_on_overflow */
1030 ppc64_elf_unhandled_reloc
, /* special_function */
1031 "R_PPC64_PLTGOT16_HA", /* name */
1032 FALSE
, /* partial_inplace */
1034 0xffff, /* dst_mask */
1035 FALSE
), /* pcrel_offset */
1037 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1038 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1042 FALSE
, /* pc_relative */
1044 complain_overflow_bitfield
, /* complain_on_overflow */
1045 bfd_elf_generic_reloc
, /* special_function */
1046 "R_PPC64_ADDR16_DS", /* name */
1047 FALSE
, /* partial_inplace */
1049 0xfffc, /* dst_mask */
1050 FALSE
), /* pcrel_offset */
1052 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1053 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1055 1, /* size (0 = byte, 1 = short, 2 = long) */
1057 FALSE
, /* pc_relative */
1059 complain_overflow_dont
,/* complain_on_overflow */
1060 bfd_elf_generic_reloc
, /* special_function */
1061 "R_PPC64_ADDR16_LO_DS",/* name */
1062 FALSE
, /* partial_inplace */
1064 0xfffc, /* dst_mask */
1065 FALSE
), /* pcrel_offset */
1067 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1068 HOWTO (R_PPC64_GOT16_DS
, /* type */
1070 1, /* size (0 = byte, 1 = short, 2 = long) */
1072 FALSE
, /* pc_relative */
1074 complain_overflow_signed
, /* complain_on_overflow */
1075 ppc64_elf_unhandled_reloc
, /* special_function */
1076 "R_PPC64_GOT16_DS", /* name */
1077 FALSE
, /* partial_inplace */
1079 0xfffc, /* dst_mask */
1080 FALSE
), /* pcrel_offset */
1082 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1083 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1085 1, /* size (0 = byte, 1 = short, 2 = long) */
1087 FALSE
, /* pc_relative */
1089 complain_overflow_dont
, /* complain_on_overflow */
1090 ppc64_elf_unhandled_reloc
, /* special_function */
1091 "R_PPC64_GOT16_LO_DS", /* name */
1092 FALSE
, /* partial_inplace */
1094 0xfffc, /* dst_mask */
1095 FALSE
), /* pcrel_offset */
1097 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1098 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1100 1, /* size (0 = byte, 1 = short, 2 = long) */
1102 FALSE
, /* pc_relative */
1104 complain_overflow_dont
, /* complain_on_overflow */
1105 ppc64_elf_unhandled_reloc
, /* special_function */
1106 "R_PPC64_PLT16_LO_DS", /* name */
1107 FALSE
, /* partial_inplace */
1109 0xfffc, /* dst_mask */
1110 FALSE
), /* pcrel_offset */
1112 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1113 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1115 1, /* size (0 = byte, 1 = short, 2 = long) */
1117 FALSE
, /* pc_relative */
1119 complain_overflow_bitfield
, /* complain_on_overflow */
1120 ppc64_elf_sectoff_reloc
, /* special_function */
1121 "R_PPC64_SECTOFF_DS", /* name */
1122 FALSE
, /* partial_inplace */
1124 0xfffc, /* dst_mask */
1125 FALSE
), /* pcrel_offset */
1127 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1128 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1130 1, /* size (0 = byte, 1 = short, 2 = long) */
1132 FALSE
, /* pc_relative */
1134 complain_overflow_dont
, /* complain_on_overflow */
1135 ppc64_elf_sectoff_reloc
, /* special_function */
1136 "R_PPC64_SECTOFF_LO_DS",/* name */
1137 FALSE
, /* partial_inplace */
1139 0xfffc, /* dst_mask */
1140 FALSE
), /* pcrel_offset */
1142 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1143 HOWTO (R_PPC64_TOC16_DS
, /* type */
1145 1, /* size (0 = byte, 1 = short, 2 = long) */
1147 FALSE
, /* pc_relative */
1149 complain_overflow_signed
, /* complain_on_overflow */
1150 ppc64_elf_toc_reloc
, /* special_function */
1151 "R_PPC64_TOC16_DS", /* name */
1152 FALSE
, /* partial_inplace */
1154 0xfffc, /* dst_mask */
1155 FALSE
), /* pcrel_offset */
1157 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1158 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1160 1, /* size (0 = byte, 1 = short, 2 = long) */
1162 FALSE
, /* pc_relative */
1164 complain_overflow_dont
, /* complain_on_overflow */
1165 ppc64_elf_toc_reloc
, /* special_function */
1166 "R_PPC64_TOC16_LO_DS", /* name */
1167 FALSE
, /* partial_inplace */
1169 0xfffc, /* dst_mask */
1170 FALSE
), /* pcrel_offset */
1172 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1173 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1174 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE
, /* pc_relative */
1180 complain_overflow_signed
, /* complain_on_overflow */
1181 ppc64_elf_unhandled_reloc
, /* special_function */
1182 "R_PPC64_PLTGOT16_DS", /* name */
1183 FALSE
, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE
), /* pcrel_offset */
1188 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1189 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1190 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1192 1, /* size (0 = byte, 1 = short, 2 = long) */
1194 FALSE
, /* pc_relative */
1196 complain_overflow_dont
, /* complain_on_overflow */
1197 ppc64_elf_unhandled_reloc
, /* special_function */
1198 "R_PPC64_PLTGOT16_LO_DS",/* name */
1199 FALSE
, /* partial_inplace */
1201 0xfffc, /* dst_mask */
1202 FALSE
), /* pcrel_offset */
1204 /* Marker reloc for TLS. */
1207 2, /* size (0 = byte, 1 = short, 2 = long) */
1209 FALSE
, /* pc_relative */
1211 complain_overflow_dont
, /* complain_on_overflow */
1212 bfd_elf_generic_reloc
, /* special_function */
1213 "R_PPC64_TLS", /* name */
1214 FALSE
, /* partial_inplace */
1217 FALSE
), /* pcrel_offset */
1219 /* Computes the load module index of the load module that contains the
1220 definition of its TLS sym. */
1221 HOWTO (R_PPC64_DTPMOD64
,
1223 4, /* size (0 = byte, 1 = short, 2 = long) */
1225 FALSE
, /* pc_relative */
1227 complain_overflow_dont
, /* complain_on_overflow */
1228 ppc64_elf_unhandled_reloc
, /* special_function */
1229 "R_PPC64_DTPMOD64", /* name */
1230 FALSE
, /* partial_inplace */
1232 ONES (64), /* dst_mask */
1233 FALSE
), /* pcrel_offset */
1235 /* Computes a dtv-relative displacement, the difference between the value
1236 of sym+add and the base address of the thread-local storage block that
1237 contains the definition of sym, minus 0x8000. */
1238 HOWTO (R_PPC64_DTPREL64
,
1240 4, /* size (0 = byte, 1 = short, 2 = long) */
1242 FALSE
, /* pc_relative */
1244 complain_overflow_dont
, /* complain_on_overflow */
1245 ppc64_elf_unhandled_reloc
, /* special_function */
1246 "R_PPC64_DTPREL64", /* name */
1247 FALSE
, /* partial_inplace */
1249 ONES (64), /* dst_mask */
1250 FALSE
), /* pcrel_offset */
1252 /* A 16 bit dtprel reloc. */
1253 HOWTO (R_PPC64_DTPREL16
,
1255 1, /* size (0 = byte, 1 = short, 2 = long) */
1257 FALSE
, /* pc_relative */
1259 complain_overflow_signed
, /* complain_on_overflow */
1260 ppc64_elf_unhandled_reloc
, /* special_function */
1261 "R_PPC64_DTPREL16", /* name */
1262 FALSE
, /* partial_inplace */
1264 0xffff, /* dst_mask */
1265 FALSE
), /* pcrel_offset */
1267 /* Like DTPREL16, but no overflow. */
1268 HOWTO (R_PPC64_DTPREL16_LO
,
1270 1, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE
, /* pc_relative */
1274 complain_overflow_dont
, /* complain_on_overflow */
1275 ppc64_elf_unhandled_reloc
, /* special_function */
1276 "R_PPC64_DTPREL16_LO", /* name */
1277 FALSE
, /* partial_inplace */
1279 0xffff, /* dst_mask */
1280 FALSE
), /* pcrel_offset */
1282 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1283 HOWTO (R_PPC64_DTPREL16_HI
,
1284 16, /* rightshift */
1285 1, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE
, /* pc_relative */
1289 complain_overflow_dont
, /* complain_on_overflow */
1290 ppc64_elf_unhandled_reloc
, /* special_function */
1291 "R_PPC64_DTPREL16_HI", /* name */
1292 FALSE
, /* partial_inplace */
1294 0xffff, /* dst_mask */
1295 FALSE
), /* pcrel_offset */
1297 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1298 HOWTO (R_PPC64_DTPREL16_HA
,
1299 16, /* rightshift */
1300 1, /* size (0 = byte, 1 = short, 2 = long) */
1302 FALSE
, /* pc_relative */
1304 complain_overflow_dont
, /* complain_on_overflow */
1305 ppc64_elf_unhandled_reloc
, /* special_function */
1306 "R_PPC64_DTPREL16_HA", /* name */
1307 FALSE
, /* partial_inplace */
1309 0xffff, /* dst_mask */
1310 FALSE
), /* pcrel_offset */
1312 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1313 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1314 32, /* rightshift */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE
, /* pc_relative */
1319 complain_overflow_dont
, /* complain_on_overflow */
1320 ppc64_elf_unhandled_reloc
, /* special_function */
1321 "R_PPC64_DTPREL16_HIGHER", /* name */
1322 FALSE
, /* partial_inplace */
1324 0xffff, /* dst_mask */
1325 FALSE
), /* pcrel_offset */
1327 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1328 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1329 32, /* rightshift */
1330 1, /* size (0 = byte, 1 = short, 2 = long) */
1332 FALSE
, /* pc_relative */
1334 complain_overflow_dont
, /* complain_on_overflow */
1335 ppc64_elf_unhandled_reloc
, /* special_function */
1336 "R_PPC64_DTPREL16_HIGHERA", /* name */
1337 FALSE
, /* partial_inplace */
1339 0xffff, /* dst_mask */
1340 FALSE
), /* pcrel_offset */
1342 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1343 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1344 48, /* rightshift */
1345 1, /* size (0 = byte, 1 = short, 2 = long) */
1347 FALSE
, /* pc_relative */
1349 complain_overflow_dont
, /* complain_on_overflow */
1350 ppc64_elf_unhandled_reloc
, /* special_function */
1351 "R_PPC64_DTPREL16_HIGHEST", /* name */
1352 FALSE
, /* partial_inplace */
1354 0xffff, /* dst_mask */
1355 FALSE
), /* pcrel_offset */
1357 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1358 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1359 48, /* rightshift */
1360 1, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE
, /* pc_relative */
1364 complain_overflow_dont
, /* complain_on_overflow */
1365 ppc64_elf_unhandled_reloc
, /* special_function */
1366 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1367 FALSE
, /* partial_inplace */
1369 0xffff, /* dst_mask */
1370 FALSE
), /* pcrel_offset */
1372 /* Like DTPREL16, but for insns with a DS field. */
1373 HOWTO (R_PPC64_DTPREL16_DS
,
1375 1, /* size (0 = byte, 1 = short, 2 = long) */
1377 FALSE
, /* pc_relative */
1379 complain_overflow_signed
, /* complain_on_overflow */
1380 ppc64_elf_unhandled_reloc
, /* special_function */
1381 "R_PPC64_DTPREL16_DS", /* name */
1382 FALSE
, /* partial_inplace */
1384 0xfffc, /* dst_mask */
1385 FALSE
), /* pcrel_offset */
1387 /* Like DTPREL16_DS, but no overflow. */
1388 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE
, /* pc_relative */
1394 complain_overflow_dont
, /* complain_on_overflow */
1395 ppc64_elf_unhandled_reloc
, /* special_function */
1396 "R_PPC64_DTPREL16_LO_DS", /* name */
1397 FALSE
, /* partial_inplace */
1399 0xfffc, /* dst_mask */
1400 FALSE
), /* pcrel_offset */
1402 /* Computes a tp-relative displacement, the difference between the value of
1403 sym+add and the value of the thread pointer (r13). */
1404 HOWTO (R_PPC64_TPREL64
,
1406 4, /* size (0 = byte, 1 = short, 2 = long) */
1408 FALSE
, /* pc_relative */
1410 complain_overflow_dont
, /* complain_on_overflow */
1411 ppc64_elf_unhandled_reloc
, /* special_function */
1412 "R_PPC64_TPREL64", /* name */
1413 FALSE
, /* partial_inplace */
1415 ONES (64), /* dst_mask */
1416 FALSE
), /* pcrel_offset */
1418 /* A 16 bit tprel reloc. */
1419 HOWTO (R_PPC64_TPREL16
,
1421 1, /* size (0 = byte, 1 = short, 2 = long) */
1423 FALSE
, /* pc_relative */
1425 complain_overflow_signed
, /* complain_on_overflow */
1426 ppc64_elf_unhandled_reloc
, /* special_function */
1427 "R_PPC64_TPREL16", /* name */
1428 FALSE
, /* partial_inplace */
1430 0xffff, /* dst_mask */
1431 FALSE
), /* pcrel_offset */
1433 /* Like TPREL16, but no overflow. */
1434 HOWTO (R_PPC64_TPREL16_LO
,
1436 1, /* size (0 = byte, 1 = short, 2 = long) */
1438 FALSE
, /* pc_relative */
1440 complain_overflow_dont
, /* complain_on_overflow */
1441 ppc64_elf_unhandled_reloc
, /* special_function */
1442 "R_PPC64_TPREL16_LO", /* name */
1443 FALSE
, /* partial_inplace */
1445 0xffff, /* dst_mask */
1446 FALSE
), /* pcrel_offset */
1448 /* Like TPREL16_LO, but next higher group of 16 bits. */
1449 HOWTO (R_PPC64_TPREL16_HI
,
1450 16, /* rightshift */
1451 1, /* size (0 = byte, 1 = short, 2 = long) */
1453 FALSE
, /* pc_relative */
1455 complain_overflow_dont
, /* complain_on_overflow */
1456 ppc64_elf_unhandled_reloc
, /* special_function */
1457 "R_PPC64_TPREL16_HI", /* name */
1458 FALSE
, /* partial_inplace */
1460 0xffff, /* dst_mask */
1461 FALSE
), /* pcrel_offset */
1463 /* Like TPREL16_HI, but adjust for low 16 bits. */
1464 HOWTO (R_PPC64_TPREL16_HA
,
1465 16, /* rightshift */
1466 1, /* size (0 = byte, 1 = short, 2 = long) */
1468 FALSE
, /* pc_relative */
1470 complain_overflow_dont
, /* complain_on_overflow */
1471 ppc64_elf_unhandled_reloc
, /* special_function */
1472 "R_PPC64_TPREL16_HA", /* name */
1473 FALSE
, /* partial_inplace */
1475 0xffff, /* dst_mask */
1476 FALSE
), /* pcrel_offset */
1478 /* Like TPREL16_HI, but next higher group of 16 bits. */
1479 HOWTO (R_PPC64_TPREL16_HIGHER
,
1480 32, /* rightshift */
1481 1, /* size (0 = byte, 1 = short, 2 = long) */
1483 FALSE
, /* pc_relative */
1485 complain_overflow_dont
, /* complain_on_overflow */
1486 ppc64_elf_unhandled_reloc
, /* special_function */
1487 "R_PPC64_TPREL16_HIGHER", /* name */
1488 FALSE
, /* partial_inplace */
1490 0xffff, /* dst_mask */
1491 FALSE
), /* pcrel_offset */
1493 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1494 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1495 32, /* rightshift */
1496 1, /* size (0 = byte, 1 = short, 2 = long) */
1498 FALSE
, /* pc_relative */
1500 complain_overflow_dont
, /* complain_on_overflow */
1501 ppc64_elf_unhandled_reloc
, /* special_function */
1502 "R_PPC64_TPREL16_HIGHERA", /* name */
1503 FALSE
, /* partial_inplace */
1505 0xffff, /* dst_mask */
1506 FALSE
), /* pcrel_offset */
1508 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1509 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1510 48, /* rightshift */
1511 1, /* size (0 = byte, 1 = short, 2 = long) */
1513 FALSE
, /* pc_relative */
1515 complain_overflow_dont
, /* complain_on_overflow */
1516 ppc64_elf_unhandled_reloc
, /* special_function */
1517 "R_PPC64_TPREL16_HIGHEST", /* name */
1518 FALSE
, /* partial_inplace */
1520 0xffff, /* dst_mask */
1521 FALSE
), /* pcrel_offset */
1523 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1524 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1525 48, /* rightshift */
1526 1, /* size (0 = byte, 1 = short, 2 = long) */
1528 FALSE
, /* pc_relative */
1530 complain_overflow_dont
, /* complain_on_overflow */
1531 ppc64_elf_unhandled_reloc
, /* special_function */
1532 "R_PPC64_TPREL16_HIGHESTA", /* name */
1533 FALSE
, /* partial_inplace */
1535 0xffff, /* dst_mask */
1536 FALSE
), /* pcrel_offset */
1538 /* Like TPREL16, but for insns with a DS field. */
1539 HOWTO (R_PPC64_TPREL16_DS
,
1541 1, /* size (0 = byte, 1 = short, 2 = long) */
1543 FALSE
, /* pc_relative */
1545 complain_overflow_signed
, /* complain_on_overflow */
1546 ppc64_elf_unhandled_reloc
, /* special_function */
1547 "R_PPC64_TPREL16_DS", /* name */
1548 FALSE
, /* partial_inplace */
1550 0xfffc, /* dst_mask */
1551 FALSE
), /* pcrel_offset */
1553 /* Like TPREL16_DS, but no overflow. */
1554 HOWTO (R_PPC64_TPREL16_LO_DS
,
1556 1, /* size (0 = byte, 1 = short, 2 = long) */
1558 FALSE
, /* pc_relative */
1560 complain_overflow_dont
, /* complain_on_overflow */
1561 ppc64_elf_unhandled_reloc
, /* special_function */
1562 "R_PPC64_TPREL16_LO_DS", /* name */
1563 FALSE
, /* partial_inplace */
1565 0xfffc, /* dst_mask */
1566 FALSE
), /* pcrel_offset */
1568 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1569 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1570 to the first entry relative to the TOC base (r2). */
1571 HOWTO (R_PPC64_GOT_TLSGD16
,
1573 1, /* size (0 = byte, 1 = short, 2 = long) */
1575 FALSE
, /* pc_relative */
1577 complain_overflow_signed
, /* complain_on_overflow */
1578 ppc64_elf_unhandled_reloc
, /* special_function */
1579 "R_PPC64_GOT_TLSGD16", /* name */
1580 FALSE
, /* partial_inplace */
1582 0xffff, /* dst_mask */
1583 FALSE
), /* pcrel_offset */
1585 /* Like GOT_TLSGD16, but no overflow. */
1586 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1588 1, /* size (0 = byte, 1 = short, 2 = long) */
1590 FALSE
, /* pc_relative */
1592 complain_overflow_dont
, /* complain_on_overflow */
1593 ppc64_elf_unhandled_reloc
, /* special_function */
1594 "R_PPC64_GOT_TLSGD16_LO", /* name */
1595 FALSE
, /* partial_inplace */
1597 0xffff, /* dst_mask */
1598 FALSE
), /* pcrel_offset */
1600 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1601 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1602 16, /* rightshift */
1603 1, /* size (0 = byte, 1 = short, 2 = long) */
1605 FALSE
, /* pc_relative */
1607 complain_overflow_dont
, /* complain_on_overflow */
1608 ppc64_elf_unhandled_reloc
, /* special_function */
1609 "R_PPC64_GOT_TLSGD16_HI", /* name */
1610 FALSE
, /* partial_inplace */
1612 0xffff, /* dst_mask */
1613 FALSE
), /* pcrel_offset */
1615 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1616 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1617 16, /* rightshift */
1618 1, /* size (0 = byte, 1 = short, 2 = long) */
1620 FALSE
, /* pc_relative */
1622 complain_overflow_dont
, /* complain_on_overflow */
1623 ppc64_elf_unhandled_reloc
, /* special_function */
1624 "R_PPC64_GOT_TLSGD16_HA", /* name */
1625 FALSE
, /* partial_inplace */
1627 0xffff, /* dst_mask */
1628 FALSE
), /* pcrel_offset */
1630 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1631 with values (sym+add)@dtpmod and zero, and computes the offset to the
1632 first entry relative to the TOC base (r2). */
1633 HOWTO (R_PPC64_GOT_TLSLD16
,
1635 1, /* size (0 = byte, 1 = short, 2 = long) */
1637 FALSE
, /* pc_relative */
1639 complain_overflow_signed
, /* complain_on_overflow */
1640 ppc64_elf_unhandled_reloc
, /* special_function */
1641 "R_PPC64_GOT_TLSLD16", /* name */
1642 FALSE
, /* partial_inplace */
1644 0xffff, /* dst_mask */
1645 FALSE
), /* pcrel_offset */
1647 /* Like GOT_TLSLD16, but no overflow. */
1648 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1650 1, /* size (0 = byte, 1 = short, 2 = long) */
1652 FALSE
, /* pc_relative */
1654 complain_overflow_dont
, /* complain_on_overflow */
1655 ppc64_elf_unhandled_reloc
, /* special_function */
1656 "R_PPC64_GOT_TLSLD16_LO", /* name */
1657 FALSE
, /* partial_inplace */
1659 0xffff, /* dst_mask */
1660 FALSE
), /* pcrel_offset */
1662 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1663 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1664 16, /* rightshift */
1665 1, /* size (0 = byte, 1 = short, 2 = long) */
1667 FALSE
, /* pc_relative */
1669 complain_overflow_dont
, /* complain_on_overflow */
1670 ppc64_elf_unhandled_reloc
, /* special_function */
1671 "R_PPC64_GOT_TLSLD16_HI", /* name */
1672 FALSE
, /* partial_inplace */
1674 0xffff, /* dst_mask */
1675 FALSE
), /* pcrel_offset */
1677 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1678 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1679 16, /* rightshift */
1680 1, /* size (0 = byte, 1 = short, 2 = long) */
1682 FALSE
, /* pc_relative */
1684 complain_overflow_dont
, /* complain_on_overflow */
1685 ppc64_elf_unhandled_reloc
, /* special_function */
1686 "R_PPC64_GOT_TLSLD16_HA", /* name */
1687 FALSE
, /* partial_inplace */
1689 0xffff, /* dst_mask */
1690 FALSE
), /* pcrel_offset */
1692 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1693 the offset to the entry relative to the TOC base (r2). */
1694 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1696 1, /* size (0 = byte, 1 = short, 2 = long) */
1698 FALSE
, /* pc_relative */
1700 complain_overflow_signed
, /* complain_on_overflow */
1701 ppc64_elf_unhandled_reloc
, /* special_function */
1702 "R_PPC64_GOT_DTPREL16_DS", /* name */
1703 FALSE
, /* partial_inplace */
1705 0xfffc, /* dst_mask */
1706 FALSE
), /* pcrel_offset */
1708 /* Like GOT_DTPREL16_DS, but no overflow. */
1709 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1711 1, /* size (0 = byte, 1 = short, 2 = long) */
1713 FALSE
, /* pc_relative */
1715 complain_overflow_dont
, /* complain_on_overflow */
1716 ppc64_elf_unhandled_reloc
, /* special_function */
1717 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1718 FALSE
, /* partial_inplace */
1720 0xfffc, /* dst_mask */
1721 FALSE
), /* pcrel_offset */
1723 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1724 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1725 16, /* rightshift */
1726 1, /* size (0 = byte, 1 = short, 2 = long) */
1728 FALSE
, /* pc_relative */
1730 complain_overflow_dont
, /* complain_on_overflow */
1731 ppc64_elf_unhandled_reloc
, /* special_function */
1732 "R_PPC64_GOT_DTPREL16_HI", /* name */
1733 FALSE
, /* partial_inplace */
1735 0xffff, /* dst_mask */
1736 FALSE
), /* pcrel_offset */
1738 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1739 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1740 16, /* rightshift */
1741 1, /* size (0 = byte, 1 = short, 2 = long) */
1743 FALSE
, /* pc_relative */
1745 complain_overflow_dont
, /* complain_on_overflow */
1746 ppc64_elf_unhandled_reloc
, /* special_function */
1747 "R_PPC64_GOT_DTPREL16_HA", /* name */
1748 FALSE
, /* partial_inplace */
1750 0xffff, /* dst_mask */
1751 FALSE
), /* pcrel_offset */
1753 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1754 offset to the entry relative to the TOC base (r2). */
1755 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1757 1, /* size (0 = byte, 1 = short, 2 = long) */
1759 FALSE
, /* pc_relative */
1761 complain_overflow_signed
, /* complain_on_overflow */
1762 ppc64_elf_unhandled_reloc
, /* special_function */
1763 "R_PPC64_GOT_TPREL16_DS", /* name */
1764 FALSE
, /* partial_inplace */
1766 0xfffc, /* dst_mask */
1767 FALSE
), /* pcrel_offset */
1769 /* Like GOT_TPREL16_DS, but no overflow. */
1770 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1772 1, /* size (0 = byte, 1 = short, 2 = long) */
1774 FALSE
, /* pc_relative */
1776 complain_overflow_dont
, /* complain_on_overflow */
1777 ppc64_elf_unhandled_reloc
, /* special_function */
1778 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1779 FALSE
, /* partial_inplace */
1781 0xfffc, /* dst_mask */
1782 FALSE
), /* pcrel_offset */
1784 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1785 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1786 16, /* rightshift */
1787 1, /* size (0 = byte, 1 = short, 2 = long) */
1789 FALSE
, /* pc_relative */
1791 complain_overflow_dont
, /* complain_on_overflow */
1792 ppc64_elf_unhandled_reloc
, /* special_function */
1793 "R_PPC64_GOT_TPREL16_HI", /* name */
1794 FALSE
, /* partial_inplace */
1796 0xffff, /* dst_mask */
1797 FALSE
), /* pcrel_offset */
1799 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1800 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1801 16, /* rightshift */
1802 1, /* size (0 = byte, 1 = short, 2 = long) */
1804 FALSE
, /* pc_relative */
1806 complain_overflow_dont
, /* complain_on_overflow */
1807 ppc64_elf_unhandled_reloc
, /* special_function */
1808 "R_PPC64_GOT_TPREL16_HA", /* name */
1809 FALSE
, /* partial_inplace */
1811 0xffff, /* dst_mask */
1812 FALSE
), /* pcrel_offset */
1814 /* GNU extension to record C++ vtable hierarchy. */
1815 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1817 0, /* size (0 = byte, 1 = short, 2 = long) */
1819 FALSE
, /* pc_relative */
1821 complain_overflow_dont
, /* complain_on_overflow */
1822 NULL
, /* special_function */
1823 "R_PPC64_GNU_VTINHERIT", /* name */
1824 FALSE
, /* partial_inplace */
1827 FALSE
), /* pcrel_offset */
1829 /* GNU extension to record C++ vtable member usage. */
1830 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1832 0, /* size (0 = byte, 1 = short, 2 = long) */
1834 FALSE
, /* pc_relative */
1836 complain_overflow_dont
, /* complain_on_overflow */
1837 NULL
, /* special_function */
1838 "R_PPC64_GNU_VTENTRY", /* name */
1839 FALSE
, /* partial_inplace */
1842 FALSE
), /* pcrel_offset */
1846 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1850 ppc_howto_init (void)
1852 unsigned int i
, type
;
1855 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
1858 type
= ppc64_elf_howto_raw
[i
].type
;
1859 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
1860 / sizeof (ppc64_elf_howto_table
[0])));
1861 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
1865 static reloc_howto_type
*
1866 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1867 bfd_reloc_code_real_type code
)
1869 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
1871 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
1872 /* Initialize howto table if needed. */
1880 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
1882 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
1884 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
1886 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
1888 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
1890 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
1892 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
1894 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
1896 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
1898 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
1900 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
1902 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
1904 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
1906 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
1908 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
1910 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
1912 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
1914 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
1916 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
1918 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
1920 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
1922 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
1924 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
1926 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
1928 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
1930 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
1932 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
1934 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
1936 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
1938 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
1940 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
1942 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
1944 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
1946 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
1948 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
1950 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
1952 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
1954 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
1956 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
1958 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
1960 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
1962 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
1964 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
1966 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
1968 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
1970 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
1972 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
1974 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
1976 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
1978 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
1980 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
1982 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
1984 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
1986 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
1988 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
1990 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
1992 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
1994 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
1996 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
1998 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2000 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2002 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2004 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2006 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2008 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2010 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2012 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2014 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2016 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2018 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2020 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2022 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2024 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2026 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2028 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2030 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2032 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2034 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2036 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2038 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2040 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2042 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2044 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2046 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2048 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2050 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2052 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2054 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2056 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2058 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2060 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2062 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2064 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2066 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2068 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2070 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2072 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2074 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2076 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2078 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2080 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2084 return ppc64_elf_howto_table
[r
];
2087 /* Set the howto pointer for a PowerPC ELF reloc. */
2090 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2091 Elf_Internal_Rela
*dst
)
2095 /* Initialize howto table if needed. */
2096 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2099 type
= ELF64_R_TYPE (dst
->r_info
);
2100 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2101 / sizeof (ppc64_elf_howto_table
[0])));
2102 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2105 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2107 static bfd_reloc_status_type
2108 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2109 void *data
, asection
*input_section
,
2110 bfd
*output_bfd
, char **error_message
)
2112 /* If this is a relocatable link (output_bfd test tells us), just
2113 call the generic function. Any adjustment will be done at final
2115 if (output_bfd
!= NULL
)
2116 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2117 input_section
, output_bfd
, error_message
);
2119 /* Adjust the addend for sign extension of the low 16 bits.
2120 We won't actually be using the low 16 bits, so trashing them
2122 reloc_entry
->addend
+= 0x8000;
2123 return bfd_reloc_continue
;
2126 static bfd_reloc_status_type
2127 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2128 void *data
, asection
*input_section
,
2129 bfd
*output_bfd
, char **error_message
)
2132 enum elf_ppc64_reloc_type r_type
;
2133 bfd_size_type octets
;
2134 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2135 bfd_boolean is_power4
= FALSE
;
2137 /* If this is a relocatable link (output_bfd test tells us), just
2138 call the generic function. Any adjustment will be done at final
2140 if (output_bfd
!= NULL
)
2141 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2142 input_section
, output_bfd
, error_message
);
2144 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2145 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2146 insn
&= ~(0x01 << 21);
2147 r_type
= reloc_entry
->howto
->type
;
2148 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2149 || r_type
== R_PPC64_REL14_BRTAKEN
)
2150 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2154 /* Set 'a' bit. This is 0b00010 in BO field for branch
2155 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2156 for branch on CTR insns (BO == 1a00t or 1a01t). */
2157 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2159 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2162 return bfd_reloc_continue
;
2169 if (!bfd_is_com_section (symbol
->section
))
2170 target
= symbol
->value
;
2171 target
+= symbol
->section
->output_section
->vma
;
2172 target
+= symbol
->section
->output_offset
;
2173 target
+= reloc_entry
->addend
;
2175 from
= (reloc_entry
->address
2176 + input_section
->output_offset
2177 + input_section
->output_section
->vma
);
2179 /* Invert 'y' bit if not the default. */
2180 if ((bfd_signed_vma
) (target
- from
) < 0)
2183 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2184 return bfd_reloc_continue
;
2187 static bfd_reloc_status_type
2188 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2189 void *data
, asection
*input_section
,
2190 bfd
*output_bfd
, char **error_message
)
2192 /* If this is a relocatable link (output_bfd test tells us), just
2193 call the generic function. Any adjustment will be done at final
2195 if (output_bfd
!= NULL
)
2196 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2197 input_section
, output_bfd
, error_message
);
2199 /* Subtract the symbol section base address. */
2200 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2201 return bfd_reloc_continue
;
2204 static bfd_reloc_status_type
2205 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2206 void *data
, asection
*input_section
,
2207 bfd
*output_bfd
, char **error_message
)
2209 /* If this is a relocatable link (output_bfd test tells us), just
2210 call the generic function. Any adjustment will be done at final
2212 if (output_bfd
!= NULL
)
2213 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2214 input_section
, output_bfd
, error_message
);
2216 /* Subtract the symbol section base address. */
2217 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2219 /* Adjust the addend for sign extension of the low 16 bits. */
2220 reloc_entry
->addend
+= 0x8000;
2221 return bfd_reloc_continue
;
2224 static bfd_reloc_status_type
2225 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2226 void *data
, asection
*input_section
,
2227 bfd
*output_bfd
, char **error_message
)
2231 /* If this is a relocatable link (output_bfd test tells us), just
2232 call the generic function. Any adjustment will be done at final
2234 if (output_bfd
!= NULL
)
2235 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2236 input_section
, output_bfd
, error_message
);
2238 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2240 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2242 /* Subtract the TOC base address. */
2243 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2244 return bfd_reloc_continue
;
2247 static bfd_reloc_status_type
2248 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2249 void *data
, asection
*input_section
,
2250 bfd
*output_bfd
, char **error_message
)
2254 /* If this is a relocatable link (output_bfd test tells us), just
2255 call the generic function. Any adjustment will be done at final
2257 if (output_bfd
!= NULL
)
2258 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2259 input_section
, output_bfd
, error_message
);
2261 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2263 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2265 /* Subtract the TOC base address. */
2266 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2268 /* Adjust the addend for sign extension of the low 16 bits. */
2269 reloc_entry
->addend
+= 0x8000;
2270 return bfd_reloc_continue
;
2273 static bfd_reloc_status_type
2274 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2275 void *data
, asection
*input_section
,
2276 bfd
*output_bfd
, char **error_message
)
2279 bfd_size_type octets
;
2281 /* If this is a relocatable link (output_bfd test tells us), just
2282 call the generic function. Any adjustment will be done at final
2284 if (output_bfd
!= NULL
)
2285 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2286 input_section
, output_bfd
, error_message
);
2288 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2290 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2292 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2293 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2294 return bfd_reloc_ok
;
2297 static bfd_reloc_status_type
2298 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2299 void *data
, asection
*input_section
,
2300 bfd
*output_bfd
, char **error_message
)
2302 /* If this is a relocatable link (output_bfd test tells us), just
2303 call the generic function. Any adjustment will be done at final
2305 if (output_bfd
!= NULL
)
2306 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2307 input_section
, output_bfd
, error_message
);
2309 if (error_message
!= NULL
)
2311 static char buf
[60];
2312 sprintf (buf
, "generic linker can't handle %s",
2313 reloc_entry
->howto
->name
);
2314 *error_message
= buf
;
2316 return bfd_reloc_dangerous
;
2319 /* Fix bad default arch selected for a 64 bit input bfd when the
2320 default is 32 bit. */
2323 ppc64_elf_object_p (bfd
*abfd
)
2325 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2327 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2329 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2331 /* Relies on arch after 32 bit default being 64 bit default. */
2332 abfd
->arch_info
= abfd
->arch_info
->next
;
2333 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2339 /* Merge backend specific data from an object file to the output
2340 object file when linking. */
2343 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2345 /* Check if we have the same endianess. */
2346 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2347 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2348 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2352 if (bfd_big_endian (ibfd
))
2353 msg
= _("%s: compiled for a big endian system "
2354 "and target is little endian");
2356 msg
= _("%s: compiled for a little endian system "
2357 "and target is big endian");
2359 (*_bfd_error_handler
) (msg
, bfd_archive_filename (ibfd
));
2361 bfd_set_error (bfd_error_wrong_format
);
2368 struct _ppc64_elf_section_data
2370 struct bfd_elf_section_data elf
;
2372 /* An array with one entry for each opd function descriptor. */
2375 /* Points to the function code section for local opd entries. */
2376 asection
**func_sec
;
2377 /* After editing .opd, adjust references to opd local syms. */
2381 /* An array for toc sections, indexed by offset/8.
2382 Specifies the relocation symbol index used at a given toc offset. */
2386 #define ppc64_elf_section_data(sec) \
2387 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2390 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2392 struct _ppc64_elf_section_data
*sdata
;
2393 bfd_size_type amt
= sizeof (*sdata
);
2395 sdata
= bfd_zalloc (abfd
, amt
);
2398 sec
->used_by_bfd
= sdata
;
2400 return _bfd_elf_new_section_hook (abfd
, sec
);
2403 /* The following functions are specific to the ELF linker, while
2404 functions above are used generally. Those named ppc64_elf_* are
2405 called by the main ELF linker code. They appear in this file more
2406 or less in the order in which they are called. eg.
2407 ppc64_elf_check_relocs is called early in the link process,
2408 ppc64_elf_finish_dynamic_sections is one of the last functions
2411 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2412 functions have both a function code symbol and a function descriptor
2413 symbol. A call to foo in a relocatable object file looks like:
2420 The function definition in another object file might be:
2424 . .quad .TOC.@tocbase
2430 When the linker resolves the call during a static link, the branch
2431 unsurprisingly just goes to .foo and the .opd information is unused.
2432 If the function definition is in a shared library, things are a little
2433 different: The call goes via a plt call stub, the opd information gets
2434 copied to the plt, and the linker patches the nop.
2442 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2443 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2444 . std 2,40(1) # this is the general idea
2452 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2454 The "reloc ()" notation is supposed to indicate that the linker emits
2455 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2458 What are the difficulties here? Well, firstly, the relocations
2459 examined by the linker in check_relocs are against the function code
2460 sym .foo, while the dynamic relocation in the plt is emitted against
2461 the function descriptor symbol, foo. Somewhere along the line, we need
2462 to carefully copy dynamic link information from one symbol to the other.
2463 Secondly, the generic part of the elf linker will make .foo a dynamic
2464 symbol as is normal for most other backends. We need foo dynamic
2465 instead, at least for an application final link. However, when
2466 creating a shared library containing foo, we need to have both symbols
2467 dynamic so that references to .foo are satisfied during the early
2468 stages of linking. Otherwise the linker might decide to pull in a
2469 definition from some other object, eg. a static library. */
2471 /* The linker needs to keep track of the number of relocs that it
2472 decides to copy as dynamic relocs in check_relocs for each symbol.
2473 This is so that it can later discard them if they are found to be
2474 unnecessary. We store the information in a field extending the
2475 regular ELF linker hash table. */
2477 struct ppc_dyn_relocs
2479 struct ppc_dyn_relocs
*next
;
2481 /* The input section of the reloc. */
2484 /* Total number of relocs copied for the input section. */
2485 bfd_size_type count
;
2487 /* Number of pc-relative relocs copied for the input section. */
2488 bfd_size_type pc_count
;
2491 /* Track GOT entries needed for a given symbol. We might need more
2492 than one got entry per symbol. */
2495 struct got_entry
*next
;
2497 /* The symbol addend that we'll be placing in the GOT. */
2500 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2503 bfd_signed_vma refcount
;
2507 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2508 TLS_TPREL or TLS_DTPREL for tls entries. */
2512 /* The same for PLT. */
2515 struct plt_entry
*next
;
2521 bfd_signed_vma refcount
;
2526 /* Of those relocs that might be copied as dynamic relocs, this macro
2527 selects those that must be copied when linking a shared library,
2528 even when the symbol is local. */
2530 #define MUST_BE_DYN_RELOC(RTYPE) \
2531 ((RTYPE) != R_PPC64_REL32 \
2532 && (RTYPE) != R_PPC64_REL64 \
2533 && (RTYPE) != R_PPC64_REL30)
2535 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2536 copying dynamic variables from a shared lib into an app's dynbss
2537 section, and instead use a dynamic relocation to point into the
2539 #define ELIMINATE_COPY_RELOCS 1
2541 /* Section name for stubs is the associated section name plus this
2543 #define STUB_SUFFIX ".stub"
2546 ppc_stub_long_branch:
2547 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2548 destination, but a 24 bit branch in a stub section will reach.
2551 ppc_stub_plt_branch:
2552 Similar to the above, but a 24 bit branch in the stub section won't
2553 reach its destination.
2554 . addis %r12,%r2,xxx@toc@ha
2555 . ld %r11,xxx@toc@l(%r12)
2560 Used to call a function in a shared library.
2561 . addis %r12,%r2,xxx@toc@ha
2563 . ld %r11,xxx+0@toc@l(%r12)
2564 . ld %r2,xxx+8@toc@l(%r12)
2566 . ld %r11,xxx+16@toc@l(%r12)
2569 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
2570 code to adjust the value and save r2 to support multiple toc sections.
2571 A ppc_stub_long_branch with an r2 offset looks like:
2573 . addis %r2,%r2,off@ha
2574 . addi %r2,%r2,off@l
2577 A ppc_stub_plt_branch with an r2 offset looks like:
2579 . addis %r12,%r2,xxx@toc@ha
2580 . ld %r11,xxx@toc@l(%r12)
2581 . addis %r2,%r2,off@ha
2582 . addi %r2,%r2,off@l
2587 enum ppc_stub_type
{
2589 ppc_stub_long_branch
,
2590 ppc_stub_long_branch_r2off
,
2591 ppc_stub_plt_branch
,
2592 ppc_stub_plt_branch_r2off
,
2596 struct ppc_stub_hash_entry
{
2598 /* Base hash table entry structure. */
2599 struct bfd_hash_entry root
;
2601 enum ppc_stub_type stub_type
;
2603 /* The stub section. */
2606 /* Offset within stub_sec of the beginning of this stub. */
2607 bfd_vma stub_offset
;
2609 /* Given the symbol's value and its section we can determine its final
2610 value when building the stubs (so the stub knows where to jump. */
2611 bfd_vma target_value
;
2612 asection
*target_section
;
2614 /* The symbol table entry, if any, that this was derived from. */
2615 struct ppc_link_hash_entry
*h
;
2617 /* And the reloc addend that this was derived from. */
2620 /* Where this stub is being called from, or, in the case of combined
2621 stub sections, the first input section in the group. */
2625 struct ppc_branch_hash_entry
{
2627 /* Base hash table entry structure. */
2628 struct bfd_hash_entry root
;
2630 /* Offset within .branch_lt. */
2631 unsigned int offset
;
2633 /* Generation marker. */
2637 struct ppc_link_hash_entry
2639 struct elf_link_hash_entry elf
;
2641 /* A pointer to the most recently used stub hash entry against this
2643 struct ppc_stub_hash_entry
*stub_cache
;
2645 /* Track dynamic relocs copied for this symbol. */
2646 struct ppc_dyn_relocs
*dyn_relocs
;
2648 /* Link between function code and descriptor symbols. */
2649 struct elf_link_hash_entry
*oh
;
2651 /* Flag function code and descriptor symbols. */
2652 unsigned int is_func
:1;
2653 unsigned int is_func_descriptor
:1;
2654 unsigned int is_entry
:1;
2656 /* Contexts in which symbol is used in the GOT (or TOC).
2657 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2658 corresponding relocs are encountered during check_relocs.
2659 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2660 indicate the corresponding GOT entry type is not needed.
2661 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2662 a TPREL one. We use a separate flag rather than setting TPREL
2663 just for convenience in distinguishing the two cases. */
2664 #define TLS_GD 1 /* GD reloc. */
2665 #define TLS_LD 2 /* LD reloc. */
2666 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2667 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2668 #define TLS_TLS 16 /* Any TLS reloc. */
2669 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2670 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2674 /* ppc64 ELF linker hash table. */
2676 struct ppc_link_hash_table
2678 struct elf_link_hash_table elf
;
2680 /* The stub hash table. */
2681 struct bfd_hash_table stub_hash_table
;
2683 /* Another hash table for plt_branch stubs. */
2684 struct bfd_hash_table branch_hash_table
;
2686 /* Linker stub bfd. */
2689 /* Linker call-backs. */
2690 asection
* (*add_stub_section
) (const char *, asection
*);
2691 void (*layout_sections_again
) (void);
2693 /* Array to keep track of which stub sections have been created, and
2694 information on stub grouping. */
2696 /* This is the section to which stubs in the group will be attached. */
2698 /* The stub section. */
2700 /* Along with elf_gp, specifies the TOC pointer used in this group. */
2704 /* Support for multiple toc sections. */
2705 unsigned int no_multi_toc
;
2706 unsigned int multi_toc_needed
;
2708 /* Temp used when calculating TOC pointers. */
2711 /* Highest output section index. */
2714 /* List of input sections for each output section. */
2715 asection
**input_list
;
2717 /* Short-cuts to get to dynamic linker sections. */
2729 /* Short-cut to first output tls section. */
2732 /* Shortcut to .__tls_get_addr. */
2733 struct elf_link_hash_entry
*tls_get_addr
;
2735 /* TLS local dynamic got entry handling. */
2737 bfd_signed_vma refcount
;
2742 unsigned long stub_count
[ppc_stub_plt_call
];
2744 /* Set if we should emit symbols for stubs. */
2745 unsigned int emit_stub_syms
;
2748 unsigned int stub_error
;
2750 /* Flag set when small branches are detected. Used to
2751 select suitable defaults for the stub group size. */
2752 unsigned int has_14bit_branch
;
2754 /* Set if we detect a reference undefined weak symbol. */
2755 unsigned int have_undefweak
;
2757 /* Incremented every time we size stubs. */
2758 unsigned int stub_iteration
;
2760 /* Small local sym to section mapping cache. */
2761 struct sym_sec_cache sym_sec
;
2764 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2766 #define ppc_hash_table(p) \
2767 ((struct ppc_link_hash_table *) ((p)->hash))
2769 #define ppc_stub_hash_lookup(table, string, create, copy) \
2770 ((struct ppc_stub_hash_entry *) \
2771 bfd_hash_lookup ((table), (string), (create), (copy)))
2773 #define ppc_branch_hash_lookup(table, string, create, copy) \
2774 ((struct ppc_branch_hash_entry *) \
2775 bfd_hash_lookup ((table), (string), (create), (copy)))
2777 /* Create an entry in the stub hash table. */
2779 static struct bfd_hash_entry
*
2780 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2781 struct bfd_hash_table
*table
,
2784 /* Allocate the structure if it has not already been allocated by a
2788 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
2793 /* Call the allocation method of the superclass. */
2794 entry
= bfd_hash_newfunc (entry
, table
, string
);
2797 struct ppc_stub_hash_entry
*eh
;
2799 /* Initialize the local fields. */
2800 eh
= (struct ppc_stub_hash_entry
*) entry
;
2801 eh
->stub_type
= ppc_stub_none
;
2802 eh
->stub_sec
= NULL
;
2803 eh
->stub_offset
= 0;
2804 eh
->target_value
= 0;
2805 eh
->target_section
= NULL
;
2813 /* Create an entry in the branch hash table. */
2815 static struct bfd_hash_entry
*
2816 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
2817 struct bfd_hash_table
*table
,
2820 /* Allocate the structure if it has not already been allocated by a
2824 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
2829 /* Call the allocation method of the superclass. */
2830 entry
= bfd_hash_newfunc (entry
, table
, string
);
2833 struct ppc_branch_hash_entry
*eh
;
2835 /* Initialize the local fields. */
2836 eh
= (struct ppc_branch_hash_entry
*) entry
;
2844 /* Create an entry in a ppc64 ELF linker hash table. */
2846 static struct bfd_hash_entry
*
2847 link_hash_newfunc (struct bfd_hash_entry
*entry
,
2848 struct bfd_hash_table
*table
,
2851 /* Allocate the structure if it has not already been allocated by a
2855 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
2860 /* Call the allocation method of the superclass. */
2861 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
2864 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
2866 eh
->stub_cache
= NULL
;
2867 eh
->dyn_relocs
= NULL
;
2870 eh
->is_func_descriptor
= 0;
2878 /* Create a ppc64 ELF linker hash table. */
2880 static struct bfd_link_hash_table
*
2881 ppc64_elf_link_hash_table_create (bfd
*abfd
)
2883 struct ppc_link_hash_table
*htab
;
2884 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
2886 htab
= bfd_zmalloc (amt
);
2890 if (! _bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
))
2896 /* Init the stub hash table too. */
2897 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
))
2900 /* And the branch hash table. */
2901 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
))
2904 /* Initializing two fields of the union is just cosmetic. We really
2905 only care about glist, but when compiled on a 32-bit host the
2906 bfd_vma fields are larger. Setting the bfd_vma to zero makes
2907 debugger inspection of these fields look nicer. */
2908 htab
->elf
.init_refcount
.refcount
= 0;
2909 htab
->elf
.init_refcount
.glist
= NULL
;
2910 htab
->elf
.init_offset
.offset
= 0;
2911 htab
->elf
.init_offset
.glist
= NULL
;
2913 return &htab
->elf
.root
;
2916 /* Free the derived linker hash table. */
2919 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
2921 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
2923 bfd_hash_table_free (&ret
->stub_hash_table
);
2924 bfd_hash_table_free (&ret
->branch_hash_table
);
2925 _bfd_generic_link_hash_table_free (hash
);
2928 /* Build a name for an entry in the stub hash table. */
2931 ppc_stub_name (const asection
*input_section
,
2932 const asection
*sym_sec
,
2933 const struct ppc_link_hash_entry
*h
,
2934 const Elf_Internal_Rela
*rel
)
2939 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
2940 offsets from a sym as a branch target? In fact, we could
2941 probably assume the addend is always zero. */
2942 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
2946 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
2947 stub_name
= bfd_malloc (len
);
2948 if (stub_name
!= NULL
)
2950 sprintf (stub_name
, "%08x_%s+%x",
2951 input_section
->id
& 0xffffffff,
2952 h
->elf
.root
.root
.string
,
2953 (int) rel
->r_addend
& 0xffffffff);
2958 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
2959 stub_name
= bfd_malloc (len
);
2960 if (stub_name
!= NULL
)
2962 sprintf (stub_name
, "%08x_%x:%x+%x",
2963 input_section
->id
& 0xffffffff,
2964 sym_sec
->id
& 0xffffffff,
2965 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
2966 (int) rel
->r_addend
& 0xffffffff);
2972 /* Look up an entry in the stub hash. Stub entries are cached because
2973 creating the stub name takes a bit of time. */
2975 static struct ppc_stub_hash_entry
*
2976 ppc_get_stub_entry (const asection
*input_section
,
2977 const asection
*sym_sec
,
2978 struct elf_link_hash_entry
*hash
,
2979 const Elf_Internal_Rela
*rel
,
2980 struct ppc_link_hash_table
*htab
)
2982 struct ppc_stub_hash_entry
*stub_entry
;
2983 struct ppc_link_hash_entry
*h
= (struct ppc_link_hash_entry
*) hash
;
2984 const asection
*id_sec
;
2986 /* If this input section is part of a group of sections sharing one
2987 stub section, then use the id of the first section in the group.
2988 Stub names need to include a section id, as there may well be
2989 more than one stub used to reach say, printf, and we need to
2990 distinguish between them. */
2991 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
2993 if (h
!= NULL
&& h
->stub_cache
!= NULL
2994 && h
->stub_cache
->h
== h
2995 && h
->stub_cache
->id_sec
== id_sec
)
2997 stub_entry
= h
->stub_cache
;
3003 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3004 if (stub_name
== NULL
)
3007 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3008 stub_name
, FALSE
, FALSE
);
3010 h
->stub_cache
= stub_entry
;
3018 /* Add a new stub entry to the stub hash. Not all fields of the new
3019 stub entry are initialised. */
3021 static struct ppc_stub_hash_entry
*
3022 ppc_add_stub (const char *stub_name
,
3024 struct ppc_link_hash_table
*htab
)
3028 struct ppc_stub_hash_entry
*stub_entry
;
3030 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3031 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3032 if (stub_sec
== NULL
)
3034 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3035 if (stub_sec
== NULL
)
3041 namelen
= strlen (link_sec
->name
);
3042 len
= namelen
+ sizeof (STUB_SUFFIX
);
3043 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3047 memcpy (s_name
, link_sec
->name
, namelen
);
3048 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3049 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3050 if (stub_sec
== NULL
)
3052 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3054 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3057 /* Enter this entry into the linker stub hash table. */
3058 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3060 if (stub_entry
== NULL
)
3062 (*_bfd_error_handler
) (_("%s: cannot create stub entry %s"),
3063 bfd_archive_filename (section
->owner
),
3068 stub_entry
->stub_sec
= stub_sec
;
3069 stub_entry
->stub_offset
= 0;
3070 stub_entry
->id_sec
= link_sec
;
3074 /* Create sections for linker generated code. */
3077 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3079 struct ppc_link_hash_table
*htab
;
3082 htab
= ppc_hash_table (info
);
3084 /* Create .sfpr for code to save and restore fp regs. */
3085 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3086 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3087 htab
->sfpr
= bfd_make_section_anyway (dynobj
, ".sfpr");
3088 if (htab
->sfpr
== NULL
3089 || ! bfd_set_section_flags (dynobj
, htab
->sfpr
, flags
)
3090 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3093 /* Create .glink for lazy dynamic linking support. */
3094 htab
->glink
= bfd_make_section_anyway (dynobj
, ".glink");
3095 if (htab
->glink
== NULL
3096 || ! bfd_set_section_flags (dynobj
, htab
->glink
, flags
)
3097 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 2))
3100 /* Create .branch_lt for plt_branch stubs. */
3101 flags
= (SEC_ALLOC
| SEC_LOAD
3102 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3103 htab
->brlt
= bfd_make_section_anyway (dynobj
, ".branch_lt");
3104 if (htab
->brlt
== NULL
3105 || ! bfd_set_section_flags (dynobj
, htab
->brlt
, flags
)
3106 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3111 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3112 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3113 htab
->relbrlt
= bfd_make_section_anyway (dynobj
, ".rela.branch_lt");
3115 || ! bfd_set_section_flags (dynobj
, htab
->relbrlt
, flags
)
3116 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3122 /* Create .got and .rela.got sections in DYNOBJ, and set up
3123 shortcuts to them in our hash table. */
3126 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
3128 struct ppc_link_hash_table
*htab
;
3130 if (! _bfd_elf_create_got_section (dynobj
, info
))
3133 htab
= ppc_hash_table (info
);
3134 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3138 htab
->relgot
= bfd_make_section (dynobj
, ".rela.got");
3140 || ! bfd_set_section_flags (dynobj
, htab
->relgot
,
3141 (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
3142 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
3144 || ! bfd_set_section_alignment (dynobj
, htab
->relgot
, 3))
3149 /* Create the dynamic sections, and set up shortcuts. */
3152 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3154 struct ppc_link_hash_table
*htab
;
3156 htab
= ppc_hash_table (info
);
3157 if (!htab
->got
&& !create_got_section (dynobj
, info
))
3160 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3163 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3164 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3165 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3167 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3169 if (!htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3170 || (!info
->shared
&& !htab
->relbss
))
3176 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3179 ppc64_elf_copy_indirect_symbol (struct elf_backend_data
*bed ATTRIBUTE_UNUSED
,
3180 struct elf_link_hash_entry
*dir
,
3181 struct elf_link_hash_entry
*ind
)
3183 struct ppc_link_hash_entry
*edir
, *eind
;
3186 edir
= (struct ppc_link_hash_entry
*) dir
;
3187 eind
= (struct ppc_link_hash_entry
*) ind
;
3189 /* Copy over any dynamic relocs we may have on the indirect sym. */
3190 if (eind
->dyn_relocs
!= NULL
)
3192 if (edir
->dyn_relocs
!= NULL
)
3194 struct ppc_dyn_relocs
**pp
;
3195 struct ppc_dyn_relocs
*p
;
3197 if (eind
->elf
.root
.type
== bfd_link_hash_indirect
)
3200 /* Add reloc counts against the weak sym to the strong sym
3201 list. Merge any entries against the same section. */
3202 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3204 struct ppc_dyn_relocs
*q
;
3206 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3207 if (q
->sec
== p
->sec
)
3209 q
->pc_count
+= p
->pc_count
;
3210 q
->count
+= p
->count
;
3217 *pp
= edir
->dyn_relocs
;
3220 edir
->dyn_relocs
= eind
->dyn_relocs
;
3221 eind
->dyn_relocs
= NULL
;
3224 edir
->is_func
|= eind
->is_func
;
3225 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
3226 edir
->is_entry
|= eind
->is_entry
;
3227 edir
->tls_mask
|= eind
->tls_mask
;
3229 mask
= (ELF_LINK_HASH_REF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
3230 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
| ELF_LINK_NON_GOT_REF
);
3231 /* If called to transfer flags for a weakdef during processing
3232 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3233 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3234 if (ELIMINATE_COPY_RELOCS
3235 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3236 && (edir
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DYNAMIC_ADJUSTED
) != 0)
3237 mask
&= ~ELF_LINK_NON_GOT_REF
;
3239 edir
->elf
.elf_link_hash_flags
|= eind
->elf
.elf_link_hash_flags
& mask
;
3241 /* If we were called to copy over info for a weak sym, that's all. */
3242 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3245 /* Copy over got entries that we may have already seen to the
3246 symbol which just became indirect. */
3247 if (eind
->elf
.got
.glist
!= NULL
)
3249 if (edir
->elf
.got
.glist
!= NULL
)
3251 struct got_entry
**entp
;
3252 struct got_entry
*ent
;
3254 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
3256 struct got_entry
*dent
;
3258 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
3259 if (dent
->addend
== ent
->addend
3260 && dent
->tls_type
== ent
->tls_type
)
3262 dent
->got
.refcount
+= ent
->got
.refcount
;
3269 *entp
= edir
->elf
.got
.glist
;
3272 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
3273 eind
->elf
.got
.glist
= NULL
;
3276 /* And plt entries. */
3277 if (eind
->elf
.plt
.plist
!= NULL
)
3279 if (edir
->elf
.plt
.plist
!= NULL
)
3281 struct plt_entry
**entp
;
3282 struct plt_entry
*ent
;
3284 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3286 struct plt_entry
*dent
;
3288 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3289 if (dent
->addend
== ent
->addend
)
3291 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3298 *entp
= edir
->elf
.plt
.plist
;
3301 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3302 eind
->elf
.plt
.plist
= NULL
;
3305 if (edir
->elf
.dynindx
== -1)
3307 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3308 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3309 eind
->elf
.dynindx
= -1;
3310 eind
->elf
.dynstr_index
= 0;
3313 BFD_ASSERT (eind
->elf
.dynindx
== -1);
3316 /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
3317 symbols undefined on the command-line. */
3320 ppc64_elf_mark_entry_syms (struct bfd_link_info
*info
)
3322 struct ppc_link_hash_table
*htab
;
3323 struct bfd_sym_chain
*sym
;
3325 htab
= ppc_hash_table (info
);
3326 for (sym
= info
->gc_sym_list
; sym
; sym
= sym
->next
)
3328 struct elf_link_hash_entry
*h
;
3330 h
= elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
3332 ((struct ppc_link_hash_entry
*) h
)->is_entry
= 1;
3338 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
3339 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
3341 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
3342 char *local_got_tls_masks
;
3344 if (local_got_ents
== NULL
)
3346 bfd_size_type size
= symtab_hdr
->sh_info
;
3348 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
3349 local_got_ents
= bfd_zalloc (abfd
, size
);
3350 if (local_got_ents
== NULL
)
3352 elf_local_got_ents (abfd
) = local_got_ents
;
3355 if ((tls_type
& TLS_EXPLICIT
) == 0)
3357 struct got_entry
*ent
;
3359 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
3360 if (ent
->addend
== r_addend
&& ent
->tls_type
== tls_type
)
3364 bfd_size_type amt
= sizeof (*ent
);
3365 ent
= bfd_alloc (abfd
, amt
);
3368 ent
->next
= local_got_ents
[r_symndx
];
3369 ent
->addend
= r_addend
;
3370 ent
->tls_type
= tls_type
;
3371 ent
->got
.refcount
= 0;
3372 local_got_ents
[r_symndx
] = ent
;
3374 ent
->got
.refcount
+= 1;
3377 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
3378 local_got_tls_masks
[r_symndx
] |= tls_type
;
3383 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
3385 struct plt_entry
*ent
;
3387 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
3388 if (ent
->addend
== addend
)
3392 bfd_size_type amt
= sizeof (*ent
);
3393 ent
= bfd_alloc (abfd
, amt
);
3396 ent
->next
= eh
->elf
.plt
.plist
;
3397 ent
->addend
= addend
;
3398 ent
->plt
.refcount
= 0;
3399 eh
->elf
.plt
.plist
= ent
;
3401 ent
->plt
.refcount
+= 1;
3402 eh
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
3407 /* Look through the relocs for a section during the first phase, and
3408 calculate needed space in the global offset table, procedure
3409 linkage table, and dynamic reloc sections. */
3412 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
3413 asection
*sec
, const Elf_Internal_Rela
*relocs
)
3415 struct ppc_link_hash_table
*htab
;
3416 Elf_Internal_Shdr
*symtab_hdr
;
3417 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
3418 const Elf_Internal_Rela
*rel
;
3419 const Elf_Internal_Rela
*rel_end
;
3421 asection
**opd_sym_map
;
3423 if (info
->relocateable
)
3426 htab
= ppc_hash_table (info
);
3427 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3429 sym_hashes
= elf_sym_hashes (abfd
);
3430 sym_hashes_end
= (sym_hashes
3431 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
3432 - symtab_hdr
->sh_info
);
3436 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
3438 /* Garbage collection needs some extra help with .opd sections.
3439 We don't want to necessarily keep everything referenced by
3440 relocs in .opd, as that would keep all functions. Instead,
3441 if we reference an .opd symbol (a function descriptor), we
3442 want to keep the function code symbol's section. This is
3443 easy for global symbols, but for local syms we need to keep
3444 information about the associated function section. Later, if
3445 edit_opd deletes entries, we'll use this array to adjust
3446 local syms in .opd. */
3448 asection
*func_section
;
3453 amt
= sec
->_raw_size
* sizeof (union opd_info
) / 24;
3454 opd_sym_map
= bfd_zalloc (abfd
, amt
);
3455 if (opd_sym_map
== NULL
)
3457 ppc64_elf_section_data (sec
)->opd
.func_sec
= opd_sym_map
;
3460 if (htab
->elf
.dynobj
== NULL
)
3461 htab
->elf
.dynobj
= abfd
;
3462 if (htab
->sfpr
== NULL
3463 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
3466 rel_end
= relocs
+ sec
->reloc_count
;
3467 for (rel
= relocs
; rel
< rel_end
; rel
++)
3469 unsigned long r_symndx
;
3470 struct elf_link_hash_entry
*h
;
3471 enum elf_ppc64_reloc_type r_type
;
3474 r_symndx
= ELF64_R_SYM (rel
->r_info
);
3475 if (r_symndx
< symtab_hdr
->sh_info
)
3478 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3480 r_type
= ELF64_R_TYPE (rel
->r_info
);
3483 case R_PPC64_GOT_TLSLD16
:
3484 case R_PPC64_GOT_TLSLD16_LO
:
3485 case R_PPC64_GOT_TLSLD16_HI
:
3486 case R_PPC64_GOT_TLSLD16_HA
:
3487 htab
->tlsld_got
.refcount
+= 1;
3488 tls_type
= TLS_TLS
| TLS_LD
;
3491 case R_PPC64_GOT_TLSGD16
:
3492 case R_PPC64_GOT_TLSGD16_LO
:
3493 case R_PPC64_GOT_TLSGD16_HI
:
3494 case R_PPC64_GOT_TLSGD16_HA
:
3495 tls_type
= TLS_TLS
| TLS_GD
;
3498 case R_PPC64_GOT_TPREL16_DS
:
3499 case R_PPC64_GOT_TPREL16_LO_DS
:
3500 case R_PPC64_GOT_TPREL16_HI
:
3501 case R_PPC64_GOT_TPREL16_HA
:
3503 info
->flags
|= DF_STATIC_TLS
;
3504 tls_type
= TLS_TLS
| TLS_TPREL
;
3507 case R_PPC64_GOT_DTPREL16_DS
:
3508 case R_PPC64_GOT_DTPREL16_LO_DS
:
3509 case R_PPC64_GOT_DTPREL16_HI
:
3510 case R_PPC64_GOT_DTPREL16_HA
:
3511 tls_type
= TLS_TLS
| TLS_DTPREL
;
3513 sec
->has_tls_reloc
= 1;
3517 case R_PPC64_GOT16_DS
:
3518 case R_PPC64_GOT16_HA
:
3519 case R_PPC64_GOT16_HI
:
3520 case R_PPC64_GOT16_LO
:
3521 case R_PPC64_GOT16_LO_DS
:
3522 /* This symbol requires a global offset table entry. */
3523 sec
->has_gp_reloc
= 1;
3524 if (htab
->got
== NULL
3525 && !create_got_section (htab
->elf
.dynobj
, info
))
3530 struct ppc_link_hash_entry
*eh
;
3531 struct got_entry
*ent
;
3533 eh
= (struct ppc_link_hash_entry
*) h
;
3534 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
3535 if (ent
->addend
== rel
->r_addend
3536 && ent
->tls_type
== tls_type
)
3540 bfd_size_type amt
= sizeof (*ent
);
3541 ent
= bfd_alloc (abfd
, amt
);
3544 ent
->next
= eh
->elf
.got
.glist
;
3545 ent
->addend
= rel
->r_addend
;
3546 ent
->tls_type
= tls_type
;
3547 ent
->got
.refcount
= 0;
3548 eh
->elf
.got
.glist
= ent
;
3550 ent
->got
.refcount
+= 1;
3551 eh
->tls_mask
|= tls_type
;
3554 /* This is a global offset table entry for a local symbol. */
3555 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3556 rel
->r_addend
, tls_type
))
3560 case R_PPC64_PLT16_HA
:
3561 case R_PPC64_PLT16_HI
:
3562 case R_PPC64_PLT16_LO
:
3565 /* This symbol requires a procedure linkage table entry. We
3566 actually build the entry in adjust_dynamic_symbol,
3567 because this might be a case of linking PIC code without
3568 linking in any dynamic objects, in which case we don't
3569 need to generate a procedure linkage table after all. */
3572 /* It does not make sense to have a procedure linkage
3573 table entry for a local symbol. */
3574 bfd_set_error (bfd_error_bad_value
);
3578 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
3583 /* The following relocations don't need to propagate the
3584 relocation if linking a shared object since they are
3585 section relative. */
3586 case R_PPC64_SECTOFF
:
3587 case R_PPC64_SECTOFF_LO
:
3588 case R_PPC64_SECTOFF_HI
:
3589 case R_PPC64_SECTOFF_HA
:
3590 case R_PPC64_SECTOFF_DS
:
3591 case R_PPC64_SECTOFF_LO_DS
:
3592 case R_PPC64_DTPREL16
:
3593 case R_PPC64_DTPREL16_LO
:
3594 case R_PPC64_DTPREL16_HI
:
3595 case R_PPC64_DTPREL16_HA
:
3596 case R_PPC64_DTPREL16_DS
:
3597 case R_PPC64_DTPREL16_LO_DS
:
3598 case R_PPC64_DTPREL16_HIGHER
:
3599 case R_PPC64_DTPREL16_HIGHERA
:
3600 case R_PPC64_DTPREL16_HIGHEST
:
3601 case R_PPC64_DTPREL16_HIGHESTA
:
3606 case R_PPC64_TOC16_LO
:
3607 case R_PPC64_TOC16_HI
:
3608 case R_PPC64_TOC16_HA
:
3609 case R_PPC64_TOC16_DS
:
3610 case R_PPC64_TOC16_LO_DS
:
3611 sec
->has_gp_reloc
= 1;
3614 /* This relocation describes the C++ object vtable hierarchy.
3615 Reconstruct it for later use during GC. */
3616 case R_PPC64_GNU_VTINHERIT
:
3617 if (!_bfd_elf64_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3621 /* This relocation describes which C++ vtable entries are actually
3622 used. Record for later use during GC. */
3623 case R_PPC64_GNU_VTENTRY
:
3624 if (!_bfd_elf64_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3629 case R_PPC64_REL14_BRTAKEN
:
3630 case R_PPC64_REL14_BRNTAKEN
:
3631 htab
->has_14bit_branch
= 1;
3636 && h
->root
.root
.string
[0] == '.'
3637 && h
->root
.root
.string
[1] != 0)
3639 /* We may need a .plt entry if the function this reloc
3640 refers to is in a shared lib. */
3641 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
3644 if (h
== htab
->tls_get_addr
)
3645 sec
->has_tls_reloc
= 1;
3646 else if ((strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
3648 && (h
->root
.root
.string
[15] == 0
3649 || h
->root
.root
.string
[15] == '@'))
3651 htab
->tls_get_addr
= h
;
3652 sec
->has_tls_reloc
= 1;
3657 case R_PPC64_TPREL64
:
3658 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
3660 info
->flags
|= DF_STATIC_TLS
;
3663 case R_PPC64_DTPMOD64
:
3664 if (rel
+ 1 < rel_end
3665 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
3666 && rel
[1].r_offset
== rel
->r_offset
+ 8)
3667 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
3669 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
3672 case R_PPC64_DTPREL64
:
3673 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
3675 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
3676 && rel
[-1].r_offset
== rel
->r_offset
- 8)
3677 /* This is the second reloc of a dtpmod, dtprel pair.
3678 Don't mark with TLS_DTPREL. */
3682 sec
->has_tls_reloc
= 1;
3685 struct ppc_link_hash_entry
*eh
;
3686 eh
= (struct ppc_link_hash_entry
*) h
;
3687 eh
->tls_mask
|= tls_type
;
3690 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3691 rel
->r_addend
, tls_type
))
3694 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
3696 /* One extra to simplify get_tls_mask. */
3697 bfd_size_type amt
= sec
->_raw_size
* sizeof (unsigned) / 8 + 1;
3698 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
3699 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
3702 BFD_ASSERT (rel
->r_offset
% 8 == 0);
3703 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
3705 /* Mark the second slot of a GD or LD entry.
3706 -1 to indicate GD and -2 to indicate LD. */
3707 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
3708 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
3709 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
3710 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
3713 case R_PPC64_TPREL16
:
3714 case R_PPC64_TPREL16_LO
:
3715 case R_PPC64_TPREL16_HI
:
3716 case R_PPC64_TPREL16_HA
:
3717 case R_PPC64_TPREL16_DS
:
3718 case R_PPC64_TPREL16_LO_DS
:
3719 case R_PPC64_TPREL16_HIGHER
:
3720 case R_PPC64_TPREL16_HIGHERA
:
3721 case R_PPC64_TPREL16_HIGHEST
:
3722 case R_PPC64_TPREL16_HIGHESTA
:
3725 info
->flags
|= DF_STATIC_TLS
;
3730 case R_PPC64_ADDR64
:
3731 if (opd_sym_map
!= NULL
3733 && h
->root
.root
.string
[0] == '.'
3734 && h
->root
.root
.string
[1] != 0)
3736 struct elf_link_hash_entry
*fdh
;
3738 fdh
= elf_link_hash_lookup (&htab
->elf
, h
->root
.root
.string
+ 1,
3739 FALSE
, FALSE
, FALSE
);
3742 ((struct ppc_link_hash_entry
*) fdh
)->is_func_descriptor
= 1;
3743 ((struct ppc_link_hash_entry
*) fdh
)->oh
= h
;
3744 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
3745 ((struct ppc_link_hash_entry
*) h
)->oh
= fdh
;
3748 if (opd_sym_map
!= NULL
3750 && rel
+ 1 < rel_end
3751 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
3755 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
3760 opd_sym_map
[rel
->r_offset
/ 24] = s
;
3767 case R_PPC64_ADDR14
:
3768 case R_PPC64_ADDR14_BRNTAKEN
:
3769 case R_PPC64_ADDR14_BRTAKEN
:
3770 case R_PPC64_ADDR16
:
3771 case R_PPC64_ADDR16_DS
:
3772 case R_PPC64_ADDR16_HA
:
3773 case R_PPC64_ADDR16_HI
:
3774 case R_PPC64_ADDR16_HIGHER
:
3775 case R_PPC64_ADDR16_HIGHERA
:
3776 case R_PPC64_ADDR16_HIGHEST
:
3777 case R_PPC64_ADDR16_HIGHESTA
:
3778 case R_PPC64_ADDR16_LO
:
3779 case R_PPC64_ADDR16_LO_DS
:
3780 case R_PPC64_ADDR24
:
3781 case R_PPC64_ADDR32
:
3782 case R_PPC64_UADDR16
:
3783 case R_PPC64_UADDR32
:
3784 case R_PPC64_UADDR64
:
3786 if (h
!= NULL
&& !info
->shared
)
3787 /* We may need a copy reloc. */
3788 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
3790 /* Don't propagate .opd relocs. */
3791 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
3794 /* Don't propagate relocs that the dynamic linker won't relocate. */
3795 if ((sec
->flags
& SEC_ALLOC
) == 0)
3798 /* If we are creating a shared library, and this is a reloc
3799 against a global symbol, or a non PC relative reloc
3800 against a local symbol, then we need to copy the reloc
3801 into the shared library. However, if we are linking with
3802 -Bsymbolic, we do not need to copy a reloc against a
3803 global symbol which is defined in an object we are
3804 including in the link (i.e., DEF_REGULAR is set). At
3805 this point we have not seen all the input files, so it is
3806 possible that DEF_REGULAR is not set now but will be set
3807 later (it is never cleared). In case of a weak definition,
3808 DEF_REGULAR may be cleared later by a strong definition in
3809 a shared library. We account for that possibility below by
3810 storing information in the dyn_relocs field of the hash
3811 table entry. A similar situation occurs when creating
3812 shared libraries and symbol visibility changes render the
3815 If on the other hand, we are creating an executable, we
3816 may need to keep relocations for symbols satisfied by a
3817 dynamic library if we manage to avoid copy relocs for the
3821 && (MUST_BE_DYN_RELOC (r_type
)
3823 && (! info
->symbolic
3824 || h
->root
.type
== bfd_link_hash_defweak
3825 || (h
->elf_link_hash_flags
3826 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
3827 || (ELIMINATE_COPY_RELOCS
3830 && (h
->root
.type
== bfd_link_hash_defweak
3831 || (h
->elf_link_hash_flags
3832 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
3834 struct ppc_dyn_relocs
*p
;
3835 struct ppc_dyn_relocs
**head
;
3837 /* We must copy these reloc types into the output file.
3838 Create a reloc section in dynobj and make room for
3845 name
= (bfd_elf_string_from_elf_section
3847 elf_elfheader (abfd
)->e_shstrndx
,
3848 elf_section_data (sec
)->rel_hdr
.sh_name
));
3852 if (strncmp (name
, ".rela", 5) != 0
3853 || strcmp (bfd_get_section_name (abfd
, sec
),
3856 (*_bfd_error_handler
)
3857 (_("%s: bad relocation section name `%s\'"),
3858 bfd_archive_filename (abfd
), name
);
3859 bfd_set_error (bfd_error_bad_value
);
3862 dynobj
= htab
->elf
.dynobj
;
3863 sreloc
= bfd_get_section_by_name (dynobj
, name
);
3868 sreloc
= bfd_make_section (dynobj
, name
);
3869 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
3870 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3871 if ((sec
->flags
& SEC_ALLOC
) != 0)
3872 flags
|= SEC_ALLOC
| SEC_LOAD
;
3874 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
3875 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
3878 elf_section_data (sec
)->sreloc
= sreloc
;
3881 /* If this is a global symbol, we count the number of
3882 relocations we need for this symbol. */
3885 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
3889 /* Track dynamic relocs needed for local syms too.
3890 We really need local syms available to do this
3894 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
3899 head
= ((struct ppc_dyn_relocs
**)
3900 &elf_section_data (s
)->local_dynrel
);
3904 if (p
== NULL
|| p
->sec
!= sec
)
3906 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
3917 if (!MUST_BE_DYN_RELOC (r_type
))
3930 /* Return the section that should be marked against GC for a given
3934 ppc64_elf_gc_mark_hook (asection
*sec
,
3935 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3936 Elf_Internal_Rela
*rel
,
3937 struct elf_link_hash_entry
*h
,
3938 Elf_Internal_Sym
*sym
)
3940 asection
*rsec
= NULL
;
3944 enum elf_ppc64_reloc_type r_type
;
3945 struct ppc_link_hash_entry
*fdh
;
3947 r_type
= ELF64_R_TYPE (rel
->r_info
);
3950 case R_PPC64_GNU_VTINHERIT
:
3951 case R_PPC64_GNU_VTENTRY
:
3955 switch (h
->root
.type
)
3957 case bfd_link_hash_defined
:
3958 case bfd_link_hash_defweak
:
3959 fdh
= (struct ppc_link_hash_entry
*) h
;
3961 /* Function descriptor syms cause the associated
3962 function code sym section to be marked. */
3963 if (fdh
->is_func_descriptor
)
3964 rsec
= fdh
->oh
->root
.u
.def
.section
;
3966 /* Function entry syms return NULL if they are in .opd
3967 and are not ._start (or others undefined on the ld
3968 command line). Thus we avoid marking all function
3969 sections, as all functions are referenced in .opd. */
3970 else if ((fdh
->oh
!= NULL
3971 && ((struct ppc_link_hash_entry
*) fdh
->oh
)->is_entry
)
3972 || ppc64_elf_section_data (sec
)->opd
.func_sec
== NULL
)
3973 rsec
= h
->root
.u
.def
.section
;
3976 case bfd_link_hash_common
:
3977 rsec
= h
->root
.u
.c
.p
->section
;
3987 asection
**opd_sym_section
;
3989 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
3990 opd_sym_section
= ppc64_elf_section_data (rsec
)->opd
.func_sec
;
3991 if (opd_sym_section
!= NULL
)
3992 rsec
= opd_sym_section
[sym
->st_value
/ 24];
3993 else if (ppc64_elf_section_data (sec
)->opd
.func_sec
!= NULL
)
4000 /* Update the .got, .plt. and dynamic reloc reference counts for the
4001 section being removed. */
4004 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
4005 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4007 struct ppc_link_hash_table
*htab
;
4008 Elf_Internal_Shdr
*symtab_hdr
;
4009 struct elf_link_hash_entry
**sym_hashes
;
4010 struct got_entry
**local_got_ents
;
4011 const Elf_Internal_Rela
*rel
, *relend
;
4013 elf_section_data (sec
)->local_dynrel
= NULL
;
4015 htab
= ppc_hash_table (info
);
4016 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4017 sym_hashes
= elf_sym_hashes (abfd
);
4018 local_got_ents
= elf_local_got_ents (abfd
);
4020 relend
= relocs
+ sec
->reloc_count
;
4021 for (rel
= relocs
; rel
< relend
; rel
++)
4023 unsigned long r_symndx
;
4024 enum elf_ppc64_reloc_type r_type
;
4025 struct elf_link_hash_entry
*h
= NULL
;
4028 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4029 r_type
= ELF64_R_TYPE (rel
->r_info
);
4030 if (r_symndx
>= symtab_hdr
->sh_info
)
4032 struct ppc_link_hash_entry
*eh
;
4033 struct ppc_dyn_relocs
**pp
;
4034 struct ppc_dyn_relocs
*p
;
4036 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4037 eh
= (struct ppc_link_hash_entry
*) h
;
4039 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4042 /* Everything must go for SEC. */
4050 case R_PPC64_GOT_TLSLD16
:
4051 case R_PPC64_GOT_TLSLD16_LO
:
4052 case R_PPC64_GOT_TLSLD16_HI
:
4053 case R_PPC64_GOT_TLSLD16_HA
:
4054 htab
->tlsld_got
.refcount
-= 1;
4055 tls_type
= TLS_TLS
| TLS_LD
;
4058 case R_PPC64_GOT_TLSGD16
:
4059 case R_PPC64_GOT_TLSGD16_LO
:
4060 case R_PPC64_GOT_TLSGD16_HI
:
4061 case R_PPC64_GOT_TLSGD16_HA
:
4062 tls_type
= TLS_TLS
| TLS_GD
;
4065 case R_PPC64_GOT_TPREL16_DS
:
4066 case R_PPC64_GOT_TPREL16_LO_DS
:
4067 case R_PPC64_GOT_TPREL16_HI
:
4068 case R_PPC64_GOT_TPREL16_HA
:
4069 tls_type
= TLS_TLS
| TLS_TPREL
;
4072 case R_PPC64_GOT_DTPREL16_DS
:
4073 case R_PPC64_GOT_DTPREL16_LO_DS
:
4074 case R_PPC64_GOT_DTPREL16_HI
:
4075 case R_PPC64_GOT_DTPREL16_HA
:
4076 tls_type
= TLS_TLS
| TLS_DTPREL
;
4080 case R_PPC64_GOT16_DS
:
4081 case R_PPC64_GOT16_HA
:
4082 case R_PPC64_GOT16_HI
:
4083 case R_PPC64_GOT16_LO
:
4084 case R_PPC64_GOT16_LO_DS
:
4087 struct got_entry
*ent
;
4092 ent
= local_got_ents
[r_symndx
];
4094 for (; ent
!= NULL
; ent
= ent
->next
)
4095 if (ent
->addend
== rel
->r_addend
4096 && ent
->tls_type
== tls_type
)
4100 if (ent
->got
.refcount
> 0)
4101 ent
->got
.refcount
-= 1;
4105 case R_PPC64_PLT16_HA
:
4106 case R_PPC64_PLT16_HI
:
4107 case R_PPC64_PLT16_LO
:
4111 case R_PPC64_REL14_BRNTAKEN
:
4112 case R_PPC64_REL14_BRTAKEN
:
4116 struct plt_entry
*ent
;
4118 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4119 if (ent
->addend
== rel
->r_addend
)
4123 if (ent
->plt
.refcount
> 0)
4124 ent
->plt
.refcount
-= 1;
4135 /* Called via elf_link_hash_traverse to transfer dynamic linking
4136 information on function code symbol entries to their corresponding
4137 function descriptor symbol entries. */
4139 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
4141 struct bfd_link_info
*info
;
4142 struct ppc_link_hash_table
*htab
;
4143 struct plt_entry
*ent
;
4145 if (h
->root
.type
== bfd_link_hash_indirect
)
4148 if (h
->root
.type
== bfd_link_hash_warning
)
4149 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4152 htab
= ppc_hash_table (info
);
4154 /* If this is a function code symbol, transfer dynamic linking
4155 information to the function descriptor symbol. */
4156 if (!((struct ppc_link_hash_entry
*) h
)->is_func
)
4159 if (h
->root
.type
== bfd_link_hash_undefweak
4160 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR
))
4161 htab
->have_undefweak
= TRUE
;
4163 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4164 if (ent
->plt
.refcount
> 0)
4167 && h
->root
.root
.string
[0] == '.'
4168 && h
->root
.root
.string
[1] != '\0')
4170 struct elf_link_hash_entry
*fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
4171 bfd_boolean force_local
;
4173 /* Find the corresponding function descriptor symbol. Create it
4174 as undefined if necessary. */
4177 fdh
= elf_link_hash_lookup (&htab
->elf
, h
->root
.root
.string
+ 1,
4178 FALSE
, FALSE
, TRUE
);
4182 && (h
->root
.type
== bfd_link_hash_undefined
4183 || h
->root
.type
== bfd_link_hash_undefweak
))
4187 struct bfd_link_hash_entry
*bh
;
4189 abfd
= h
->root
.u
.undef
.abfd
;
4190 newsym
= bfd_make_empty_symbol (abfd
);
4191 newsym
->name
= h
->root
.root
.string
+ 1;
4192 newsym
->section
= bfd_und_section_ptr
;
4194 newsym
->flags
= BSF_OBJECT
;
4195 if (h
->root
.type
== bfd_link_hash_undefweak
)
4196 newsym
->flags
|= BSF_WEAK
;
4199 if ( !(_bfd_generic_link_add_one_symbol
4200 (info
, abfd
, newsym
->name
, newsym
->flags
,
4201 newsym
->section
, newsym
->value
, NULL
, FALSE
, FALSE
, &bh
)))
4205 fdh
= (struct elf_link_hash_entry
*) bh
;
4206 fdh
->elf_link_hash_flags
&= ~ELF_LINK_NON_ELF
;
4210 && (fdh
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
4212 || (fdh
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
4213 || (fdh
->elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) != 0))
4215 if (fdh
->dynindx
== -1)
4216 if (! bfd_elf64_link_record_dynamic_symbol (info
, fdh
))
4218 fdh
->elf_link_hash_flags
|= (h
->elf_link_hash_flags
4219 & (ELF_LINK_HASH_REF_REGULAR
4220 | ELF_LINK_HASH_REF_DYNAMIC
4221 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4222 | ELF_LINK_NON_GOT_REF
));
4223 if (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
4225 fdh
->plt
.plist
= h
->plt
.plist
;
4226 fdh
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
4228 ((struct ppc_link_hash_entry
*) fdh
)->is_func_descriptor
= 1;
4229 ((struct ppc_link_hash_entry
*) fdh
)->oh
= h
;
4230 ((struct ppc_link_hash_entry
*) h
)->oh
= fdh
;
4233 /* Now that the info is on the function descriptor, clear the
4234 function code sym info. Any function code syms for which we
4235 don't have a definition in a regular file, we force local.
4236 This prevents a shared library from exporting syms that have
4237 been imported from another library. Function code syms that
4238 are really in the library we must leave global to prevent the
4239 linker dragging in a definition from a static library. */
4240 force_local
= (info
->shared
4241 && ((h
->elf_link_hash_flags
4242 & ELF_LINK_HASH_DEF_REGULAR
) == 0
4244 || (fdh
->elf_link_hash_flags
4245 & ELF_LINK_HASH_DEF_REGULAR
) == 0
4246 || (fdh
->elf_link_hash_flags
4247 & ELF_LINK_FORCED_LOCAL
) != 0));
4248 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
4254 #define MIN_SAVE_FPR 14
4255 #define MAX_SAVE_FPR 31
4257 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4258 this hook to a) provide some gcc support functions, and b) transfer
4259 dynamic linking information gathered so far on function code symbol
4260 entries, to their corresponding function descriptor symbol entries. */
4262 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
4263 struct bfd_link_info
*info
)
4265 struct ppc_link_hash_table
*htab
;
4266 unsigned int lowest_savef
= MAX_SAVE_FPR
+ 2;
4267 unsigned int lowest_restf
= MAX_SAVE_FPR
+ 2;
4269 struct elf_link_hash_entry
*h
;
4273 htab
= ppc_hash_table (info
);
4275 if (htab
->sfpr
== NULL
)
4276 /* We don't have any relocs. */
4279 /* First provide any missing ._savef* and ._restf* functions. */
4280 memcpy (sym
, "._savef14", 10);
4281 for (i
= MIN_SAVE_FPR
; i
<= MAX_SAVE_FPR
; i
++)
4283 sym
[7] = i
/ 10 + '0';
4284 sym
[8] = i
% 10 + '0';
4285 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
4287 && h
->root
.type
== bfd_link_hash_undefined
)
4289 if (lowest_savef
> i
)
4291 h
->root
.type
= bfd_link_hash_defined
;
4292 h
->root
.u
.def
.section
= htab
->sfpr
;
4293 h
->root
.u
.def
.value
= (i
- lowest_savef
) * 4;
4295 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
4296 _bfd_elf_link_hash_hide_symbol (info
, h
, info
->shared
);
4300 memcpy (sym
, "._restf14", 10);
4301 for (i
= MIN_SAVE_FPR
; i
<= MAX_SAVE_FPR
; i
++)
4303 sym
[7] = i
/ 10 + '0';
4304 sym
[8] = i
% 10 + '0';
4305 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
4307 && h
->root
.type
== bfd_link_hash_undefined
)
4309 if (lowest_restf
> i
)
4311 h
->root
.type
= bfd_link_hash_defined
;
4312 h
->root
.u
.def
.section
= htab
->sfpr
;
4313 h
->root
.u
.def
.value
= ((MAX_SAVE_FPR
+ 2 - lowest_savef
) * 4
4314 + (i
- lowest_restf
) * 4);
4316 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
4317 _bfd_elf_link_hash_hide_symbol (info
, h
, info
->shared
);
4321 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
4323 htab
->sfpr
->_raw_size
= ((MAX_SAVE_FPR
+ 2 - lowest_savef
) * 4
4324 + (MAX_SAVE_FPR
+ 2 - lowest_restf
) * 4);
4326 if (htab
->sfpr
->_raw_size
== 0)
4328 if (!htab
->have_undefweak
)
4330 _bfd_strip_section_from_output (info
, htab
->sfpr
);
4334 htab
->sfpr
->_raw_size
= 4;
4337 p
= bfd_alloc (htab
->elf
.dynobj
, htab
->sfpr
->_raw_size
);
4340 htab
->sfpr
->contents
= p
;
4342 for (i
= lowest_savef
; i
<= MAX_SAVE_FPR
; i
++)
4344 unsigned int fpr
= i
<< 21;
4345 unsigned int stackoff
= (1 << 16) - (MAX_SAVE_FPR
+ 1 - i
) * 8;
4346 bfd_put_32 (htab
->elf
.dynobj
, STFD_FR0_0R1
+ fpr
+ stackoff
, p
);
4349 if (lowest_savef
<= MAX_SAVE_FPR
)
4351 bfd_put_32 (htab
->elf
.dynobj
, BLR
, p
);
4355 for (i
= lowest_restf
; i
<= MAX_SAVE_FPR
; i
++)
4357 unsigned int fpr
= i
<< 21;
4358 unsigned int stackoff
= (1 << 16) - (MAX_SAVE_FPR
+ 1 - i
) * 8;
4359 bfd_put_32 (htab
->elf
.dynobj
, LFD_FR0_0R1
+ fpr
+ stackoff
, p
);
4362 if (lowest_restf
<= MAX_SAVE_FPR
4363 || htab
->sfpr
->_raw_size
== 4)
4365 bfd_put_32 (htab
->elf
.dynobj
, BLR
, p
);
4371 /* Adjust a symbol defined by a dynamic object and referenced by a
4372 regular object. The current definition is in some section of the
4373 dynamic object, but we're not including those sections. We have to
4374 change the definition to something the rest of the link can
4378 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4379 struct elf_link_hash_entry
*h
)
4381 struct ppc_link_hash_table
*htab
;
4383 unsigned int power_of_two
;
4385 htab
= ppc_hash_table (info
);
4387 /* Deal with function syms. */
4388 if (h
->type
== STT_FUNC
4389 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
4391 /* Clear procedure linkage table information for any symbol that
4392 won't need a .plt entry. */
4393 struct plt_entry
*ent
;
4394 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4395 if (ent
->plt
.refcount
> 0)
4397 if (!((struct ppc_link_hash_entry
*) h
)->is_func_descriptor
4399 || SYMBOL_CALLS_LOCAL (info
, h
)
4400 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4401 && h
->root
.type
== bfd_link_hash_undefweak
))
4403 h
->plt
.plist
= NULL
;
4404 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
4408 h
->plt
.plist
= NULL
;
4410 /* If this is a weak symbol, and there is a real definition, the
4411 processor independent code will have arranged for us to see the
4412 real definition first, and we can just use the same value. */
4413 if (h
->weakdef
!= NULL
)
4415 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
4416 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
4417 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
4418 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
4419 if (ELIMINATE_COPY_RELOCS
)
4420 h
->elf_link_hash_flags
4421 = ((h
->elf_link_hash_flags
& ~ELF_LINK_NON_GOT_REF
)
4422 | (h
->weakdef
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
));
4426 /* This is a reference to a symbol defined by a dynamic object which
4427 is not a function. */
4429 /* If we are creating a shared library, we must presume that the
4430 only references to the symbol are via the global offset table.
4431 For such cases we need not do anything here; the relocations will
4432 be handled correctly by relocate_section. */
4436 /* If there are no references to this symbol that do not use the
4437 GOT, we don't need to generate a copy reloc. */
4438 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
4441 if (ELIMINATE_COPY_RELOCS
)
4443 struct ppc_link_hash_entry
* eh
;
4444 struct ppc_dyn_relocs
*p
;
4446 eh
= (struct ppc_link_hash_entry
*) h
;
4447 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4449 s
= p
->sec
->output_section
;
4450 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
4454 /* If we didn't find any dynamic relocs in read-only sections, then
4455 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4458 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
4463 /* We must allocate the symbol in our .dynbss section, which will
4464 become part of the .bss section of the executable. There will be
4465 an entry for this symbol in the .dynsym section. The dynamic
4466 object will contain position independent code, so all references
4467 from the dynamic object to this symbol will go through the global
4468 offset table. The dynamic linker will use the .dynsym entry to
4469 determine the address it must put in the global offset table, so
4470 both the dynamic object and the regular object will refer to the
4471 same memory location for the variable. */
4473 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4474 to copy the initial value out of the dynamic object and into the
4475 runtime process image. We need to remember the offset into the
4476 .rela.bss section we are going to use. */
4477 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4479 htab
->relbss
->_raw_size
+= sizeof (Elf64_External_Rela
);
4480 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
4483 /* We need to figure out the alignment required for this symbol. I
4484 have no idea how ELF linkers handle this. */
4485 power_of_two
= bfd_log2 (h
->size
);
4486 if (power_of_two
> 4)
4489 /* Apply the required alignment. */
4491 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
, (bfd_size_type
) (1 << power_of_two
));
4492 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
4494 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
4498 /* Define the symbol as being at this point in the section. */
4499 h
->root
.u
.def
.section
= s
;
4500 h
->root
.u
.def
.value
= s
->_raw_size
;
4502 /* Increment the section size to make room for the symbol. */
4503 s
->_raw_size
+= h
->size
;
4508 /* If given a function descriptor symbol, hide both the function code
4509 sym and the descriptor. */
4511 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
4512 struct elf_link_hash_entry
*h
,
4513 bfd_boolean force_local
)
4515 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
4517 if (((struct ppc_link_hash_entry
*) h
)->is_func_descriptor
)
4519 struct elf_link_hash_entry
*fh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
4524 struct ppc_link_hash_table
*htab
;
4527 /* We aren't supposed to use alloca in BFD because on
4528 systems which do not have alloca the version in libiberty
4529 calls xmalloc, which might cause the program to crash
4530 when it runs out of memory. This function doesn't have a
4531 return status, so there's no way to gracefully return an
4532 error. So cheat. We know that string[-1] can be safely
4533 dereferenced; It's either a string in an ELF string
4534 table, or allocated in an objalloc structure. */
4536 p
= h
->root
.root
.string
- 1;
4539 htab
= ppc_hash_table (info
);
4540 fh
= elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
4543 /* Unfortunately, if it so happens that the string we were
4544 looking for was allocated immediately before this string,
4545 then we overwrote the string terminator. That's the only
4546 reason the lookup should fail. */
4549 q
= h
->root
.root
.string
+ strlen (h
->root
.root
.string
);
4550 while (q
>= h
->root
.root
.string
&& *q
== *p
)
4552 if (q
< h
->root
.root
.string
&& *p
== '.')
4553 fh
= elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
4557 ((struct ppc_link_hash_entry
*) h
)->oh
= fh
;
4558 ((struct ppc_link_hash_entry
*) fh
)->oh
= h
;
4562 _bfd_elf_link_hash_hide_symbol (info
, fh
, force_local
);
4567 get_sym_h (struct elf_link_hash_entry
**hp
, Elf_Internal_Sym
**symp
,
4568 asection
**symsecp
, char **tls_maskp
, Elf_Internal_Sym
**locsymsp
,
4569 unsigned long r_symndx
, bfd
*ibfd
)
4571 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4573 if (r_symndx
>= symtab_hdr
->sh_info
)
4575 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
4576 struct elf_link_hash_entry
*h
;
4578 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4579 while (h
->root
.type
== bfd_link_hash_indirect
4580 || h
->root
.type
== bfd_link_hash_warning
)
4581 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4589 if (symsecp
!= NULL
)
4591 asection
*symsec
= NULL
;
4592 if (h
->root
.type
== bfd_link_hash_defined
4593 || h
->root
.type
== bfd_link_hash_defweak
)
4594 symsec
= h
->root
.u
.def
.section
;
4598 if (tls_maskp
!= NULL
)
4600 struct ppc_link_hash_entry
*eh
;
4602 eh
= (struct ppc_link_hash_entry
*) h
;
4603 *tls_maskp
= &eh
->tls_mask
;
4608 Elf_Internal_Sym
*sym
;
4609 Elf_Internal_Sym
*locsyms
= *locsymsp
;
4611 if (locsyms
== NULL
)
4613 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4614 if (locsyms
== NULL
)
4615 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
4616 symtab_hdr
->sh_info
,
4617 0, NULL
, NULL
, NULL
);
4618 if (locsyms
== NULL
)
4620 *locsymsp
= locsyms
;
4622 sym
= locsyms
+ r_symndx
;
4630 if (symsecp
!= NULL
)
4632 asection
*symsec
= NULL
;
4633 if ((sym
->st_shndx
!= SHN_UNDEF
4634 && sym
->st_shndx
< SHN_LORESERVE
)
4635 || sym
->st_shndx
> SHN_HIRESERVE
)
4636 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
4640 if (tls_maskp
!= NULL
)
4642 struct got_entry
**lgot_ents
;
4646 lgot_ents
= elf_local_got_ents (ibfd
);
4647 if (lgot_ents
!= NULL
)
4649 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
4650 tls_mask
= &lgot_masks
[r_symndx
];
4652 *tls_maskp
= tls_mask
;
4658 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
4659 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
4660 type suitable for optimization, and 1 otherwise. */
4663 get_tls_mask (char **tls_maskp
, Elf_Internal_Sym
**locsymsp
,
4664 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
4666 unsigned long r_symndx
;
4667 unsigned int next_r
;
4668 struct elf_link_hash_entry
*h
;
4669 Elf_Internal_Sym
*sym
;
4673 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4674 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
4677 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
4679 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4682 /* Look inside a TOC section too. */
4685 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
4686 off
= h
->root
.u
.def
.value
;
4689 off
= sym
->st_value
;
4690 off
+= rel
->r_addend
;
4691 BFD_ASSERT (off
% 8 == 0);
4692 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
4693 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
4694 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
4697 || h
->root
.type
== bfd_link_hash_defined
4698 || h
->root
.type
== bfd_link_hash_defweak
)
4700 if (next_r
== (unsigned) -1)
4702 if (next_r
== (unsigned) -2
4704 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
4711 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
)
4715 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4718 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
4719 Elf_Internal_Shdr
*symtab_hdr
;
4720 Elf_Internal_Sym
*local_syms
;
4721 struct elf_link_hash_entry
**sym_hashes
;
4725 bfd_boolean need_edit
;
4727 sec
= bfd_get_section_by_name (ibfd
, ".opd");
4731 amt
= sec
->_raw_size
* sizeof (long) / 24;
4732 adjust
= ppc64_elf_section_data (sec
)->opd
.adjust
;
4735 /* Must be a ld -r link. ie. check_relocs hasn't been
4737 adjust
= bfd_zalloc (obfd
, amt
);
4738 ppc64_elf_section_data (sec
)->opd
.adjust
= adjust
;
4740 memset (adjust
, 0, amt
);
4742 if (sec
->output_section
== bfd_abs_section_ptr
)
4745 /* Look through the section relocs. */
4746 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
4750 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4751 sym_hashes
= elf_sym_hashes (ibfd
);
4753 /* Read the relocations. */
4754 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
4756 if (relstart
== NULL
)
4759 /* First run through the relocs to check they are sane, and to
4760 determine whether we need to edit this opd section. */
4763 relend
= relstart
+ sec
->reloc_count
;
4764 for (rel
= relstart
; rel
< relend
; rel
++)
4766 enum elf_ppc64_reloc_type r_type
;
4767 unsigned long r_symndx
;
4769 struct elf_link_hash_entry
*h
;
4770 Elf_Internal_Sym
*sym
;
4772 /* .opd contains a regular array of 24 byte entries. We're
4773 only interested in the reloc pointing to a function entry
4775 r_type
= ELF64_R_TYPE (rel
->r_info
);
4776 if (r_type
== R_PPC64_TOC
)
4779 if (r_type
!= R_PPC64_ADDR64
)
4781 (*_bfd_error_handler
)
4782 (_("%s: unexpected reloc type %u in .opd section"),
4783 bfd_archive_filename (ibfd
), r_type
);
4788 if (rel
+ 1 >= relend
)
4790 r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
);
4791 if (r_type
!= R_PPC64_TOC
)
4794 if (rel
->r_offset
!= offset
)
4796 /* If someone messes with .opd alignment then after a
4797 "ld -r" we might have padding in the middle of .opd.
4798 Also, there's nothing to prevent someone putting
4799 something silly in .opd with the assembler. No .opd
4800 optimization for them! */
4801 (*_bfd_error_handler
)
4802 (_("%s: .opd is not a regular array of opd entries"),
4803 bfd_archive_filename (ibfd
));
4808 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4809 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
4811 goto error_free_rel
;
4813 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
4815 const char *sym_name
;
4817 sym_name
= h
->root
.root
.string
;
4819 sym_name
= bfd_elf_local_sym_name (ibfd
, sym
);
4821 (*_bfd_error_handler
)
4822 (_("%s: undefined sym `%s' in .opd section"),
4823 bfd_archive_filename (ibfd
),
4829 /* opd entries are always for functions defined in the
4830 current input bfd. If the symbol isn't defined in the
4831 input bfd, then we won't be using the function in this
4832 bfd; It must be defined in a linkonce section in another
4833 bfd, or is weak. It's also possible that we are
4834 discarding the function due to a linker script /DISCARD/,
4835 which we test for via the output_section. */
4836 if (sym_sec
->owner
!= ibfd
4837 || sym_sec
->output_section
== bfd_abs_section_ptr
)
4845 Elf_Internal_Rela
*write_rel
;
4846 bfd_byte
*rptr
, *wptr
;
4849 /* This seems a waste of time as input .opd sections are all
4850 zeros as generated by gcc, but I suppose there's no reason
4851 this will always be so. We might start putting something in
4852 the third word of .opd entries. */
4853 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
4855 bfd_byte
*loc
= bfd_alloc (ibfd
, sec
->_raw_size
);
4857 || !bfd_get_section_contents (ibfd
, sec
, loc
, 0,
4860 if (local_syms
!= NULL
4861 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
4864 if (elf_section_data (sec
)->relocs
!= relstart
)
4868 sec
->contents
= loc
;
4869 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
4872 elf_section_data (sec
)->relocs
= relstart
;
4874 wptr
= sec
->contents
;
4875 rptr
= sec
->contents
;
4876 write_rel
= relstart
;
4879 for (rel
= relstart
; rel
< relend
; rel
++)
4881 if (rel
->r_offset
== offset
)
4883 unsigned long r_symndx
;
4885 struct elf_link_hash_entry
*h
;
4886 Elf_Internal_Sym
*sym
;
4888 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4889 get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
4892 skip
= (sym_sec
->owner
!= ibfd
4893 || sym_sec
->output_section
== bfd_abs_section_ptr
);
4896 if (h
!= NULL
&& sym_sec
->owner
== ibfd
)
4898 /* Arrange for the function descriptor sym
4900 struct ppc_link_hash_entry
*fdh
;
4901 struct ppc_link_hash_entry
*fh
;
4903 fh
= (struct ppc_link_hash_entry
*) h
;
4904 fdh
= (struct ppc_link_hash_entry
*) fh
->oh
;
4907 const char *fd_name
;
4908 struct ppc_link_hash_table
*htab
;
4910 fd_name
= h
->root
.root
.string
+ 1;
4911 htab
= ppc_hash_table (info
);
4912 fdh
= (struct ppc_link_hash_entry
*)
4913 elf_link_hash_lookup (&htab
->elf
, fd_name
,
4914 FALSE
, FALSE
, FALSE
);
4915 fdh
->is_func_descriptor
= 1;
4921 fdh
->elf
.root
.u
.def
.value
= 0;
4922 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
4927 /* We'll be keeping this opd entry. */
4931 /* Redefine the function descriptor symbol
4932 to this location in the opd section.
4933 We've checked above that opd relocs are
4935 struct ppc_link_hash_entry
*fdh
;
4936 struct ppc_link_hash_entry
*fh
;
4938 fh
= (struct ppc_link_hash_entry
*) h
;
4939 fdh
= (struct ppc_link_hash_entry
*) fh
->oh
;
4942 const char *fd_name
;
4943 struct ppc_link_hash_table
*htab
;
4945 fd_name
= h
->root
.root
.string
+ 1;
4946 htab
= ppc_hash_table (info
);
4947 fdh
= (struct ppc_link_hash_entry
*)
4948 elf_link_hash_lookup (&htab
->elf
, fd_name
,
4949 FALSE
, FALSE
, FALSE
);
4950 fdh
->is_func_descriptor
= 1;
4956 fdh
->elf
.root
.u
.def
.value
= wptr
- sec
->contents
;
4960 /* Local syms are a bit tricky. We could
4961 tweak them as they can be cached, but
4962 we'd need to look through the local syms
4963 for the function descriptor sym which we
4964 don't have at the moment. So keep an
4965 array of adjustments. */
4966 adjust
[rel
->r_offset
/ 24] = wptr
- rptr
;
4970 memcpy (wptr
, rptr
, 24);
4977 /* We need to adjust any reloc offsets to point to the
4978 new opd entries. While we're at it, we may as well
4979 remove redundant relocs. */
4982 rel
->r_offset
+= wptr
- rptr
;
4983 if (write_rel
!= rel
)
4984 memcpy (write_rel
, rel
, sizeof (*rel
));
4989 sec
->_cooked_size
= wptr
- sec
->contents
;
4990 sec
->reloc_count
= write_rel
- relstart
;
4991 /* Fudge the size too, as this is used later in
4992 elf_bfd_final_link if we are emitting relocs. */
4993 elf_section_data (sec
)->rel_hdr
.sh_size
4994 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
4995 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
4997 else if (elf_section_data (sec
)->relocs
!= relstart
)
5000 if (local_syms
!= NULL
5001 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
5003 if (!info
->keep_memory
)
5006 symtab_hdr
->contents
= (unsigned char *) local_syms
;
5013 /* Set htab->tls_sec. */
5016 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5019 struct ppc_link_hash_table
*htab
;
5021 for (tls
= obfd
->sections
; tls
!= NULL
; tls
= tls
->next
)
5022 if ((tls
->flags
& (SEC_THREAD_LOCAL
| SEC_LOAD
))
5023 == (SEC_THREAD_LOCAL
| SEC_LOAD
))
5026 htab
= ppc_hash_table (info
);
5027 htab
->tls_sec
= tls
;
5029 if (htab
->tls_get_addr
!= NULL
)
5031 struct elf_link_hash_entry
*h
= htab
->tls_get_addr
;
5033 while (h
->root
.type
== bfd_link_hash_indirect
5034 || h
->root
.type
== bfd_link_hash_warning
)
5035 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5037 htab
->tls_get_addr
= h
;
5043 /* Run through all the TLS relocs looking for optimization
5044 opportunities. The linker has been hacked (see ppc64elf.em) to do
5045 a preliminary section layout so that we know the TLS segment
5046 offsets. We can't optimize earlier because some optimizations need
5047 to know the tp offset, and we need to optimize before allocating
5048 dynamic relocations. */
5051 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
5055 struct ppc_link_hash_table
*htab
;
5057 if (info
->relocateable
|| info
->shared
)
5060 htab
= ppc_hash_table (info
);
5061 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5063 Elf_Internal_Sym
*locsyms
= NULL
;
5065 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5066 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5068 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5069 int expecting_tls_get_addr
;
5071 /* Read the relocations. */
5072 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5074 if (relstart
== NULL
)
5077 expecting_tls_get_addr
= 0;
5078 relend
= relstart
+ sec
->reloc_count
;
5079 for (rel
= relstart
; rel
< relend
; rel
++)
5081 enum elf_ppc64_reloc_type r_type
;
5082 unsigned long r_symndx
;
5083 struct elf_link_hash_entry
*h
;
5084 Elf_Internal_Sym
*sym
;
5087 char tls_set
, tls_clear
, tls_type
= 0;
5089 bfd_boolean ok_tprel
, is_local
;
5091 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5092 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
5096 if (elf_section_data (sec
)->relocs
!= relstart
)
5099 && (elf_tdata (ibfd
)->symtab_hdr
.contents
5100 != (unsigned char *) locsyms
))
5107 if (h
->root
.type
!= bfd_link_hash_defined
5108 && h
->root
.type
!= bfd_link_hash_defweak
)
5110 value
= h
->root
.u
.def
.value
;
5113 value
= sym
->st_value
;
5118 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
5121 value
+= sym_sec
->output_offset
;
5122 value
+= sym_sec
->output_section
->vma
;
5123 value
-= htab
->tls_sec
->vma
;
5124 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
5125 < (bfd_vma
) 1 << 32);
5128 r_type
= ELF64_R_TYPE (rel
->r_info
);
5131 case R_PPC64_GOT_TLSLD16
:
5132 case R_PPC64_GOT_TLSLD16_LO
:
5133 case R_PPC64_GOT_TLSLD16_HI
:
5134 case R_PPC64_GOT_TLSLD16_HA
:
5135 /* These relocs should never be against a symbol
5136 defined in a shared lib. Leave them alone if
5137 that turns out to be the case. */
5138 htab
->tlsld_got
.refcount
-= 1;
5145 tls_type
= TLS_TLS
| TLS_LD
;
5146 expecting_tls_get_addr
= 1;
5149 case R_PPC64_GOT_TLSGD16
:
5150 case R_PPC64_GOT_TLSGD16_LO
:
5151 case R_PPC64_GOT_TLSGD16_HI
:
5152 case R_PPC64_GOT_TLSGD16_HA
:
5158 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5160 tls_type
= TLS_TLS
| TLS_GD
;
5161 expecting_tls_get_addr
= 1;
5164 case R_PPC64_GOT_TPREL16_DS
:
5165 case R_PPC64_GOT_TPREL16_LO_DS
:
5166 case R_PPC64_GOT_TPREL16_HI
:
5167 case R_PPC64_GOT_TPREL16_HA
:
5168 expecting_tls_get_addr
= 0;
5173 tls_clear
= TLS_TPREL
;
5174 tls_type
= TLS_TLS
| TLS_TPREL
;
5181 case R_PPC64_REL14_BRTAKEN
:
5182 case R_PPC64_REL14_BRNTAKEN
:
5185 && h
== htab
->tls_get_addr
)
5187 if (!expecting_tls_get_addr
5189 && ((ELF64_R_TYPE (rel
[-1].r_info
)
5191 || (ELF64_R_TYPE (rel
[-1].r_info
)
5192 == R_PPC64_TOC16_LO
)))
5194 /* Check for toc tls entries. */
5198 retval
= get_tls_mask (&toc_tls
, &locsyms
,
5202 if (toc_tls
!= NULL
)
5203 expecting_tls_get_addr
= retval
> 1;
5206 if (expecting_tls_get_addr
)
5208 struct plt_entry
*ent
;
5209 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
5210 if (ent
->addend
== 0)
5212 if (ent
->plt
.refcount
> 0)
5213 ent
->plt
.refcount
-= 1;
5218 expecting_tls_get_addr
= 0;
5221 case R_PPC64_TPREL64
:
5222 expecting_tls_get_addr
= 0;
5226 tls_set
= TLS_EXPLICIT
;
5227 tls_clear
= TLS_TPREL
;
5233 case R_PPC64_DTPMOD64
:
5234 expecting_tls_get_addr
= 0;
5235 if (rel
+ 1 < relend
5237 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
5238 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5242 tls_set
= TLS_EXPLICIT
| TLS_GD
;
5245 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
5254 tls_set
= TLS_EXPLICIT
;
5260 expecting_tls_get_addr
= 0;
5264 if ((tls_set
& TLS_EXPLICIT
) == 0)
5266 struct got_entry
*ent
;
5268 /* Adjust got entry for this reloc. */
5272 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
5274 for (; ent
!= NULL
; ent
= ent
->next
)
5275 if (ent
->addend
== rel
->r_addend
5276 && ent
->tls_type
== tls_type
)
5283 /* We managed to get rid of a got entry. */
5284 if (ent
->got
.refcount
> 0)
5285 ent
->got
.refcount
-= 1;
5290 struct ppc_link_hash_entry
* eh
;
5291 struct ppc_dyn_relocs
**pp
;
5292 struct ppc_dyn_relocs
*p
;
5294 /* Adjust dynamic relocs. */
5295 eh
= (struct ppc_link_hash_entry
*) h
;
5296 for (pp
= &eh
->dyn_relocs
;
5301 /* If we got rid of a DTPMOD/DTPREL reloc
5302 pair then we'll lose one or two dyn
5304 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
5313 *tls_mask
|= tls_set
;
5314 *tls_mask
&= ~tls_clear
;
5317 if (elf_section_data (sec
)->relocs
!= relstart
)
5322 && (elf_tdata (ibfd
)->symtab_hdr
.contents
5323 != (unsigned char *) locsyms
))
5325 if (!info
->keep_memory
)
5328 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
5334 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
5335 will be called from elflink.h. If elflink.h doesn't call our
5336 finish_dynamic_symbol routine, we'll need to do something about
5337 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
5338 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
5341 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
5342 && ((H)->dynindx != -1 \
5343 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5345 /* Allocate space in .plt, .got and associated reloc sections for
5349 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5351 struct bfd_link_info
*info
;
5352 struct ppc_link_hash_table
*htab
;
5354 struct ppc_link_hash_entry
*eh
;
5355 struct ppc_dyn_relocs
*p
;
5356 struct got_entry
*gent
;
5358 if (h
->root
.type
== bfd_link_hash_indirect
)
5361 if (h
->root
.type
== bfd_link_hash_warning
)
5362 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5364 info
= (struct bfd_link_info
*) inf
;
5365 htab
= ppc_hash_table (info
);
5367 if (htab
->elf
.dynamic_sections_created
5369 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
5371 struct plt_entry
*pent
;
5372 bfd_boolean doneone
= FALSE
;
5373 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
5374 if (pent
->plt
.refcount
> 0)
5376 BFD_ASSERT (((struct ppc_link_hash_entry
*) h
)->is_func_descriptor
);
5378 /* If this is the first .plt entry, make room for the special
5381 if (s
->_raw_size
== 0)
5382 s
->_raw_size
+= PLT_INITIAL_ENTRY_SIZE
;
5384 pent
->plt
.offset
= s
->_raw_size
;
5386 /* Make room for this entry. */
5387 s
->_raw_size
+= PLT_ENTRY_SIZE
;
5389 /* Make room for the .glink code. */
5391 if (s
->_raw_size
== 0)
5392 s
->_raw_size
+= GLINK_CALL_STUB_SIZE
;
5393 /* We need bigger stubs past index 32767. */
5394 if (s
->_raw_size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
5396 s
->_raw_size
+= 2*4;
5398 /* We also need to make an entry in the .rela.plt section. */
5400 s
->_raw_size
+= sizeof (Elf64_External_Rela
);
5404 pent
->plt
.offset
= (bfd_vma
) -1;
5407 h
->plt
.plist
= NULL
;
5408 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
5413 h
->plt
.plist
= NULL
;
5414 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
5417 eh
= (struct ppc_link_hash_entry
*) h
;
5418 /* Run through the TLS GD got entries first if we're changing them
5420 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
5421 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
5422 if (gent
->got
.refcount
> 0
5423 && (gent
->tls_type
& TLS_GD
) != 0)
5425 /* This was a GD entry that has been converted to TPREL. If
5426 there happens to be a TPREL entry we can use that one. */
5427 struct got_entry
*ent
;
5428 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5429 if (ent
->got
.refcount
> 0
5430 && (ent
->tls_type
& TLS_TPREL
) != 0
5431 && ent
->addend
== gent
->addend
)
5433 gent
->got
.refcount
= 0;
5437 /* If not, then we'll be using our own TPREL entry. */
5438 if (gent
->got
.refcount
!= 0)
5439 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
5442 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
5443 if (gent
->got
.refcount
> 0)
5447 /* Make sure this symbol is output as a dynamic symbol.
5448 Undefined weak syms won't yet be marked as dynamic,
5449 nor will all TLS symbols. */
5450 if (h
->dynindx
== -1
5451 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
5453 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
5457 if ((gent
->tls_type
& TLS_LD
) != 0
5458 && !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
5460 gent
->got
.offset
= htab
->tlsld_got
.offset
;
5465 gent
->got
.offset
= s
->_raw_size
;
5467 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
5468 dyn
= htab
->elf
.dynamic_sections_created
;
5470 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5471 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5472 || h
->root
.type
!= bfd_link_hash_undefweak
))
5473 htab
->relgot
->_raw_size
5474 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
5475 ? 2 * sizeof (Elf64_External_Rela
)
5476 : sizeof (Elf64_External_Rela
));
5479 gent
->got
.offset
= (bfd_vma
) -1;
5481 if (eh
->dyn_relocs
== NULL
)
5484 /* In the shared -Bsymbolic case, discard space allocated for
5485 dynamic pc-relative relocs against symbols which turn out to be
5486 defined in regular objects. For the normal shared case, discard
5487 space for relocs that have become local due to symbol visibility
5492 /* Relocs that use pc_count are those that appear on a call insn,
5493 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
5494 generated via assembly. We want calls to protected symbols to
5495 resolve directly to the function rather than going via the plt.
5496 If people want function pointer comparisons to work as expected
5497 then they should avoid writing weird assembly. */
5498 if (SYMBOL_CALLS_LOCAL (info
, h
))
5500 struct ppc_dyn_relocs
**pp
;
5502 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5504 p
->count
-= p
->pc_count
;
5513 /* Also discard relocs on undefined weak syms with non-default
5515 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5516 && h
->root
.type
== bfd_link_hash_undefweak
)
5517 eh
->dyn_relocs
= NULL
;
5519 else if (ELIMINATE_COPY_RELOCS
)
5521 /* For the non-shared case, discard space for relocs against
5522 symbols which turn out to need copy relocs or are not
5525 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
5526 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
5527 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
5529 /* Make sure this symbol is output as a dynamic symbol.
5530 Undefined weak syms won't yet be marked as dynamic. */
5531 if (h
->dynindx
== -1
5532 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
5534 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
5538 /* If that succeeded, we know we'll be keeping all the
5540 if (h
->dynindx
!= -1)
5544 eh
->dyn_relocs
= NULL
;
5549 /* Finally, allocate space. */
5550 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5552 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5553 sreloc
->_raw_size
+= p
->count
* sizeof (Elf64_External_Rela
);
5559 /* Find any dynamic relocs that apply to read-only sections. */
5562 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5564 struct ppc_link_hash_entry
*eh
;
5565 struct ppc_dyn_relocs
*p
;
5567 if (h
->root
.type
== bfd_link_hash_warning
)
5568 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5570 eh
= (struct ppc_link_hash_entry
*) h
;
5571 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5573 asection
*s
= p
->sec
->output_section
;
5575 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5577 struct bfd_link_info
*info
= inf
;
5579 info
->flags
|= DF_TEXTREL
;
5581 /* Not an error, just cut short the traversal. */
5588 /* Set the sizes of the dynamic sections. */
5591 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
5592 struct bfd_link_info
*info
)
5594 struct ppc_link_hash_table
*htab
;
5600 htab
= ppc_hash_table (info
);
5601 dynobj
= htab
->elf
.dynobj
;
5605 if (htab
->elf
.dynamic_sections_created
)
5607 /* Set the contents of the .interp section to the interpreter. */
5608 if (info
->executable
)
5610 s
= bfd_get_section_by_name (dynobj
, ".interp");
5613 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5614 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5618 if (htab
->tlsld_got
.refcount
> 0)
5620 htab
->tlsld_got
.offset
= htab
->got
->_raw_size
;
5621 htab
->got
->_raw_size
+= 16;
5623 htab
->relgot
->_raw_size
+= sizeof (Elf64_External_Rela
);
5626 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
5628 /* Set up .got offsets for local syms, and space for local dynamic
5630 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5632 struct got_entry
**lgot_ents
;
5633 struct got_entry
**end_lgot_ents
;
5635 bfd_size_type locsymcount
;
5636 Elf_Internal_Shdr
*symtab_hdr
;
5639 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
5642 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
5644 struct ppc_dyn_relocs
*p
;
5646 for (p
= *((struct ppc_dyn_relocs
**)
5647 &elf_section_data (s
)->local_dynrel
);
5651 if (!bfd_is_abs_section (p
->sec
)
5652 && bfd_is_abs_section (p
->sec
->output_section
))
5654 /* Input section has been discarded, either because
5655 it is a copy of a linkonce section or due to
5656 linker script /DISCARD/, so we'll be discarding
5659 else if (p
->count
!= 0)
5661 srel
= elf_section_data (p
->sec
)->sreloc
;
5662 srel
->_raw_size
+= p
->count
* sizeof (Elf64_External_Rela
);
5663 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
5664 info
->flags
|= DF_TEXTREL
;
5669 lgot_ents
= elf_local_got_ents (ibfd
);
5673 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5674 locsymcount
= symtab_hdr
->sh_info
;
5675 end_lgot_ents
= lgot_ents
+ locsymcount
;
5676 lgot_masks
= (char *) end_lgot_ents
;
5678 srel
= htab
->relgot
;
5679 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
5681 struct got_entry
*ent
;
5683 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
5684 if (ent
->got
.refcount
> 0)
5686 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
5688 if (htab
->tlsld_got
.offset
== (bfd_vma
) -1)
5690 htab
->tlsld_got
.offset
= s
->_raw_size
;
5693 srel
->_raw_size
+= sizeof (Elf64_External_Rela
);
5695 ent
->got
.offset
= htab
->tlsld_got
.offset
;
5699 ent
->got
.offset
= s
->_raw_size
;
5700 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
5704 srel
->_raw_size
+= 2 * sizeof (Elf64_External_Rela
);
5710 srel
->_raw_size
+= sizeof (Elf64_External_Rela
);
5715 ent
->got
.offset
= (bfd_vma
) -1;
5719 /* Allocate global sym .plt and .got entries, and space for global
5720 sym dynamic relocs. */
5721 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
5723 /* We now have determined the sizes of the various dynamic sections.
5724 Allocate memory for them. */
5726 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5728 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5731 /* Reset _cooked_size since prelim layout will set it wrongly,
5732 and a non-zero _cooked_size sticks. */
5733 s
->_cooked_size
= 0;
5735 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
5736 /* These haven't been allocated yet; don't strip. */
5738 else if (s
== htab
->got
)
5740 /* Automatic multiple tocs aren't possible if we are using the
5741 GOT. The GOT is accessed via r2, so we can't adjust r2.
5742 FIXME: There's no reason why we couldn't lay out multiple
5744 if (s
->_raw_size
> elf_backend_got_header_size
)
5745 htab
->no_multi_toc
= 1;
5747 else if (s
== htab
->plt
5748 || s
== htab
->glink
)
5750 /* Strip this section if we don't need it; see the
5753 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
5755 if (s
->_raw_size
== 0)
5757 /* If we don't need this section, strip it from the
5758 output file. This is mostly to handle .rela.bss and
5759 .rela.plt. We must create both sections in
5760 create_dynamic_sections, because they must be created
5761 before the linker maps input sections to output
5762 sections. The linker does that before
5763 adjust_dynamic_symbol is called, and it is that
5764 function which decides whether anything needs to go
5765 into these sections. */
5769 if (s
!= htab
->relplt
)
5772 /* We use the reloc_count field as a counter if we need
5773 to copy relocs into the output file. */
5779 /* It's not one of our sections, so don't allocate space. */
5783 if (s
->_raw_size
== 0)
5785 _bfd_strip_section_from_output (info
, s
);
5789 /* .plt is in the bss section. We don't initialise it. */
5790 if ((s
->flags
& SEC_LOAD
) == 0)
5793 /* Allocate memory for the section contents. We use bfd_zalloc
5794 here in case unused entries are not reclaimed before the
5795 section's contents are written out. This should not happen,
5796 but this way if it does we get a R_PPC64_NONE reloc in .rela
5797 sections instead of garbage.
5798 We also rely on the section contents being zero when writing
5800 s
->contents
= bfd_zalloc (dynobj
, s
->_raw_size
);
5801 if (s
->contents
== NULL
)
5805 if (htab
->elf
.dynamic_sections_created
)
5807 /* Add some entries to the .dynamic section. We fill in the
5808 values later, in ppc64_elf_finish_dynamic_sections, but we
5809 must add the entries now so that we get the correct size for
5810 the .dynamic section. The DT_DEBUG entry is filled in by the
5811 dynamic linker and used by the debugger. */
5812 #define add_dynamic_entry(TAG, VAL) \
5813 bfd_elf64_add_dynamic_entry (info, (TAG), (VAL))
5815 if (info
->executable
)
5817 if (!add_dynamic_entry (DT_DEBUG
, 0))
5821 if (htab
->plt
!= NULL
&& htab
->plt
->_raw_size
!= 0)
5823 if (!add_dynamic_entry (DT_PLTGOT
, 0)
5824 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
5825 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
5826 || !add_dynamic_entry (DT_JMPREL
, 0)
5827 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
5833 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
5834 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
5840 if (!add_dynamic_entry (DT_RELA
, 0)
5841 || !add_dynamic_entry (DT_RELASZ
, 0)
5842 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
5845 /* If any dynamic relocs apply to a read-only section,
5846 then we need a DT_TEXTREL entry. */
5847 if ((info
->flags
& DF_TEXTREL
) == 0)
5848 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
5850 if ((info
->flags
& DF_TEXTREL
) != 0)
5852 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5857 #undef add_dynamic_entry
5862 /* Determine the type of stub needed, if any, for a call. */
5864 static inline enum ppc_stub_type
5865 ppc_type_of_stub (asection
*input_sec
,
5866 const Elf_Internal_Rela
*rel
,
5867 struct ppc_link_hash_entry
**hash
,
5868 bfd_vma destination
)
5870 struct ppc_link_hash_entry
*h
= *hash
;
5872 bfd_vma branch_offset
;
5873 bfd_vma max_branch_offset
;
5874 enum elf_ppc64_reloc_type r_type
;
5879 && h
->oh
->dynindx
!= -1)
5881 struct plt_entry
*ent
;
5882 for (ent
= h
->oh
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5883 if (ent
->addend
== rel
->r_addend
5884 && ent
->plt
.offset
!= (bfd_vma
) -1)
5886 *hash
= (struct ppc_link_hash_entry
*) h
->oh
;
5887 return ppc_stub_plt_call
;
5891 if (h
->elf
.root
.type
!= bfd_link_hash_defined
5892 && h
->elf
.root
.type
!= bfd_link_hash_defweak
)
5893 return ppc_stub_none
;
5896 /* Determine where the call point is. */
5897 location
= (input_sec
->output_offset
5898 + input_sec
->output_section
->vma
5901 branch_offset
= destination
- location
;
5902 r_type
= ELF64_R_TYPE (rel
->r_info
);
5904 /* Determine if a long branch stub is needed. */
5905 max_branch_offset
= 1 << 25;
5906 if (r_type
!= R_PPC64_REL24
)
5907 max_branch_offset
= 1 << 15;
5909 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
5910 /* We need a stub. Figure out whether a long_branch or plt_branch
5912 return ppc_stub_long_branch
;
5914 return ppc_stub_none
;
5917 /* Build a .plt call stub. */
5919 static inline bfd_byte
*
5920 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
5922 #define PPC_LO(v) ((v) & 0xffff)
5923 #define PPC_HI(v) (((v) >> 16) & 0xffff)
5924 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
5926 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
5927 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
5928 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
5929 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
5930 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
5932 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
5933 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
5934 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
5936 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
5937 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
5938 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
5943 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
5945 struct ppc_stub_hash_entry
*stub_entry
;
5946 struct ppc_branch_hash_entry
*br_entry
;
5947 struct bfd_link_info
*info
;
5948 struct ppc_link_hash_table
*htab
;
5954 struct plt_entry
*ent
;
5958 /* Massage our args to the form they really have. */
5959 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
5962 htab
= ppc_hash_table (info
);
5963 stub_sec
= stub_entry
->stub_sec
;
5965 /* Make a note of the offset within the stubs for this entry. */
5966 stub_entry
->stub_offset
= stub_sec
->_cooked_size
;
5967 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
5969 if (htab
->emit_stub_syms
)
5971 struct elf_link_hash_entry
*h
;
5972 h
= elf_link_hash_lookup (&htab
->elf
, stub_entry
->root
.string
,
5973 TRUE
, FALSE
, FALSE
);
5976 h
->root
.type
= bfd_link_hash_defined
;
5977 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
5978 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
5979 h
->elf_link_hash_flags
= (ELF_LINK_HASH_REF_REGULAR
5980 | ELF_LINK_HASH_DEF_REGULAR
5981 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
5982 | ELF_LINK_FORCED_LOCAL
);
5985 stub_bfd
= stub_sec
->owner
;
5987 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
5988 switch (stub_entry
->stub_type
)
5990 case ppc_stub_long_branch
:
5991 case ppc_stub_long_branch_r2off
:
5992 /* Branches are relative. This is where we are going to. */
5993 off
= (stub_entry
->target_value
5994 + stub_entry
->target_section
->output_offset
5995 + stub_entry
->target_section
->output_section
->vma
);
5997 /* And this is where we are coming from. */
5998 off
-= (stub_entry
->stub_offset
5999 + stub_sec
->output_offset
6000 + stub_sec
->output_section
->vma
);
6002 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
6008 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
6009 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6010 bfd_put_32 (stub_bfd
, STD_R2_40R1
, loc
);
6012 bfd_put_32 (stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
6014 bfd_put_32 (stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
6019 bfd_put_32 (stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
6021 BFD_ASSERT (off
+ (1 << 25) < (bfd_vma
) (1 << 26));
6024 case ppc_stub_plt_branch
:
6025 case ppc_stub_plt_branch_r2off
:
6026 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
6027 stub_entry
->root
.string
+ 9,
6029 if (br_entry
== NULL
)
6031 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
6032 stub_entry
->root
.string
+ 9);
6033 htab
->stub_error
= TRUE
;
6037 off
= (stub_entry
->target_value
6038 + stub_entry
->target_section
->output_offset
6039 + stub_entry
->target_section
->output_section
->vma
);
6041 bfd_put_64 (htab
->brlt
->owner
, off
,
6042 htab
->brlt
->contents
+ br_entry
->offset
);
6046 /* Create a reloc for the branch lookup table entry. */
6047 Elf_Internal_Rela rela
;
6050 rela
.r_offset
= (br_entry
->offset
6051 + htab
->brlt
->output_offset
6052 + htab
->brlt
->output_section
->vma
);
6053 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
6054 rela
.r_addend
= off
;
6056 rl
= htab
->relbrlt
->contents
;
6057 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
6058 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
6061 off
= (br_entry
->offset
6062 + htab
->brlt
->output_offset
6063 + htab
->brlt
->output_section
->vma
6064 - elf_gp (htab
->brlt
->output_section
->owner
)
6065 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6067 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6069 (*_bfd_error_handler
)
6070 (_("linkage table error against `%s'"),
6071 stub_entry
->root
.string
);
6072 bfd_set_error (bfd_error_bad_value
);
6073 htab
->stub_error
= TRUE
;
6078 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
6080 bfd_put_32 (stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
6082 bfd_put_32 (stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
6089 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
6090 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6091 bfd_put_32 (stub_bfd
, STD_R2_40R1
, loc
);
6093 bfd_put_32 (stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
6095 bfd_put_32 (stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
6097 bfd_put_32 (stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
6099 bfd_put_32 (stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
6103 bfd_put_32 (stub_bfd
, MTCTR_R11
, loc
);
6105 bfd_put_32 (stub_bfd
, BCTR
, loc
);
6108 case ppc_stub_plt_call
:
6109 /* Do the best we can for shared libraries built without
6110 exporting ".foo" for each "foo". This can happen when symbol
6111 versioning scripts strip all bar a subset of symbols. */
6112 if (stub_entry
->h
->oh
->root
.type
!= bfd_link_hash_defined
6113 && stub_entry
->h
->oh
->root
.type
!= bfd_link_hash_defweak
)
6115 /* Point the symbol at the stub. There may be multiple stubs,
6116 we don't really care; The main thing is to make this sym
6117 defined somewhere. */
6118 stub_entry
->h
->oh
->root
.type
= bfd_link_hash_defined
;
6119 stub_entry
->h
->oh
->root
.u
.def
.section
= stub_entry
->stub_sec
;
6120 stub_entry
->h
->oh
->root
.u
.def
.value
= stub_entry
->stub_offset
;
6123 /* Now build the stub. */
6125 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6126 if (ent
->addend
== stub_entry
->addend
)
6128 off
= ent
->plt
.offset
;
6131 if (off
>= (bfd_vma
) -2)
6134 off
&= ~ (bfd_vma
) 1;
6135 off
+= (htab
->plt
->output_offset
6136 + htab
->plt
->output_section
->vma
6137 - elf_gp (htab
->plt
->output_section
->owner
)
6138 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6140 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6142 (*_bfd_error_handler
)
6143 (_("linkage table error against `%s'"),
6144 stub_entry
->h
->elf
.root
.root
.string
);
6145 bfd_set_error (bfd_error_bad_value
);
6146 htab
->stub_error
= TRUE
;
6150 p
= build_plt_stub (stub_bfd
, loc
, off
);
6159 stub_sec
->_cooked_size
+= size
;
6163 /* As above, but don't actually build the stub. Just bump offset so
6164 we know stub section sizes, and select plt_branch stubs where
6165 long_branch stubs won't do. */
6168 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
6170 struct ppc_stub_hash_entry
*stub_entry
;
6171 struct ppc_link_hash_table
*htab
;
6175 /* Massage our args to the form they really have. */
6176 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
6179 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
6181 struct plt_entry
*ent
;
6183 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6184 if (ent
->addend
== stub_entry
->addend
)
6186 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
6189 if (off
>= (bfd_vma
) -2)
6191 off
+= (htab
->plt
->output_offset
6192 + htab
->plt
->output_section
->vma
6193 - elf_gp (htab
->plt
->output_section
->owner
)
6194 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6196 size
= PLT_CALL_STUB_SIZE
;
6197 if (PPC_HA (off
+ 16) != PPC_HA (off
))
6202 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
6204 off
= (stub_entry
->target_value
6205 + stub_entry
->target_section
->output_offset
6206 + stub_entry
->target_section
->output_section
->vma
);
6207 off
-= (stub_entry
->stub_sec
->_raw_size
6208 + stub_entry
->stub_sec
->output_offset
6209 + stub_entry
->stub_sec
->output_section
->vma
);
6211 /* Reset the stub type from the plt variant in case we now
6212 can reach with a shorter stub. */
6213 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
6214 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
6217 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
6223 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
6224 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
6226 struct ppc_branch_hash_entry
*br_entry
;
6228 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
6229 stub_entry
->root
.string
+ 9,
6231 if (br_entry
== NULL
)
6233 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
6234 stub_entry
->root
.string
+ 9);
6235 htab
->stub_error
= TRUE
;
6239 if (br_entry
->iter
!= htab
->stub_iteration
)
6241 br_entry
->iter
= htab
->stub_iteration
;
6242 br_entry
->offset
= htab
->brlt
->_raw_size
;
6243 htab
->brlt
->_raw_size
+= 8;
6246 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
6248 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
6253 stub_entry
->stub_sec
->_raw_size
+= size
;
6257 /* Set up various things so that we can make a list of input sections
6258 for each output section included in the link. Returns -1 on error,
6259 0 when no stubs will be needed, and 1 on success. */
6262 ppc64_elf_setup_section_lists (bfd
*output_bfd
, struct bfd_link_info
*info
)
6265 int top_id
, top_index
, id
;
6267 asection
**input_list
;
6269 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6271 if (htab
->brlt
== NULL
)
6274 /* Find the top input section id. */
6275 for (input_bfd
= info
->input_bfds
, top_id
= 3;
6277 input_bfd
= input_bfd
->link_next
)
6279 for (section
= input_bfd
->sections
;
6281 section
= section
->next
)
6283 if (top_id
< section
->id
)
6284 top_id
= section
->id
;
6288 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
6289 htab
->stub_group
= bfd_zmalloc (amt
);
6290 if (htab
->stub_group
== NULL
)
6293 /* Set toc_off for com, und, abs and ind sections. */
6294 for (id
= 0; id
< 3; id
++)
6295 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
6297 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
6299 /* We can't use output_bfd->section_count here to find the top output
6300 section index as some sections may have been removed, and
6301 _bfd_strip_section_from_output doesn't renumber the indices. */
6302 for (section
= output_bfd
->sections
, top_index
= 0;
6304 section
= section
->next
)
6306 if (top_index
< section
->index
)
6307 top_index
= section
->index
;
6310 htab
->top_index
= top_index
;
6311 amt
= sizeof (asection
*) * (top_index
+ 1);
6312 input_list
= bfd_zmalloc (amt
);
6313 htab
->input_list
= input_list
;
6314 if (input_list
== NULL
)
6320 /* The linker repeatedly calls this function for each toc input
6321 section. Group input bfds such that the toc within a group
6322 is less than 64k in size. Will break with cute linker scripts
6323 that play games with dot in the output toc section. */
6326 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
6328 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6330 if (!htab
->no_multi_toc
)
6332 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
6333 bfd_vma off
= addr
- htab
->toc_curr
;
6334 if (off
+ isec
->_raw_size
> 0x10000)
6336 htab
->toc_curr
= addr
;
6337 htab
->multi_toc_needed
= 1;
6339 elf_gp (isec
->owner
) = (htab
->toc_curr
6340 - elf_gp (isec
->output_section
->owner
)
6345 /* Called after the last call to the above function. */
6348 ppc64_elf_reinit_toc (bfd
*output_bfd ATTRIBUTE_UNUSED
,
6349 struct bfd_link_info
*info
)
6351 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6353 /* toc_curr tracks the TOC offset used for code sections below in
6354 ppc64_elf_next_input_section. Start off at 0x8000. */
6355 htab
->toc_curr
= TOC_BASE_OFF
;
6358 /* No toc references were found in ISEC. If the code in ISEC makes no
6359 calls, then there's no need to use toc adjusting stubs when branching
6360 into ISEC. Actually, indirect calls from ISEC are OK as they will
6364 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
6371 /* Hack for linux kernel. .fixup contains branches, but only back to
6372 the function that hit an exception. */
6373 branch_ok
= strcmp (isec
->name
, ".fixup") == 0;
6375 contents
= elf_section_data (isec
)->this_hdr
.contents
;
6376 if (contents
== NULL
)
6378 contents
= bfd_malloc (isec
->_raw_size
);
6379 if (contents
== NULL
)
6381 if (! bfd_get_section_contents (isec
->owner
, isec
, contents
,
6382 (file_ptr
) 0, isec
->_raw_size
))
6387 if (info
->keep_memory
)
6388 elf_section_data (isec
)->this_hdr
.contents
= contents
;
6391 /* Code scan, because we don't necessarily have relocs on calls to
6392 static functions. */
6394 for (i
= 0; i
< isec
->_raw_size
; i
+= 4)
6396 unsigned long insn
= bfd_get_32 (isec
->owner
, contents
+ i
);
6397 /* Is this a branch? */
6398 if ((insn
& (0x1f << 26)) == (18 << 26)
6399 /* If branch and link, it's a function call. */
6401 /* Sibling calls use a plain branch. I don't know a way
6402 of deciding whether a branch is really a sibling call. */
6410 if (elf_section_data (isec
)->this_hdr
.contents
!= contents
)
6415 /* The linker repeatedly calls this function for each input section,
6416 in the order that input sections are linked into output sections.
6417 Build lists of input sections to determine groupings between which
6418 we may insert linker stubs. */
6421 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
6423 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6426 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
6427 && isec
->output_section
->index
<= htab
->top_index
)
6429 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
6430 /* Steal the link_sec pointer for our list. */
6431 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
6432 /* This happens to make the list in reverse order,
6433 which is what we want. */
6434 PREV_SEC (isec
) = *list
;
6438 /* If a code section has a function that uses the TOC then we need
6439 to use the right TOC (obviously). Also, make sure that .opd gets
6440 the correct TOC value. */
6441 if (isec
->has_gp_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
6443 if (elf_gp (isec
->owner
) != 0)
6444 htab
->toc_curr
= elf_gp (isec
->owner
);
6446 else if ((ret
= toc_adjusting_stub_needed (info
, isec
)) < 0)
6449 isec
->has_gp_reloc
= ret
;
6451 /* Functions that don't use the TOC can belong in any TOC group.
6452 Use the last TOC base. This happens to make _init and _fini
6454 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
6458 /* See whether we can group stub sections together. Grouping stub
6459 sections may result in fewer stubs. More importantly, we need to
6460 put all .init* and .fini* stubs at the beginning of the .init or
6461 .fini output sections respectively, because glibc splits the
6462 _init and _fini functions into multiple parts. Putting a stub in
6463 the middle of a function is not a good idea. */
6466 group_sections (struct ppc_link_hash_table
*htab
,
6467 bfd_size_type stub_group_size
,
6468 bfd_boolean stubs_always_before_branch
)
6470 asection
**list
= htab
->input_list
+ htab
->top_index
;
6473 asection
*tail
= *list
;
6474 while (tail
!= NULL
)
6478 bfd_size_type total
;
6479 bfd_boolean big_sec
;
6483 if (tail
->_cooked_size
)
6484 total
= tail
->_cooked_size
;
6486 total
= tail
->_raw_size
;
6487 big_sec
= total
>= stub_group_size
;
6488 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
6490 while ((prev
= PREV_SEC (curr
)) != NULL
6491 && ((total
+= curr
->output_offset
- prev
->output_offset
)
6493 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
6496 /* OK, the size from the start of CURR to the end is less
6497 than stub_group_size and thus can be handled by one stub
6498 section. (or the tail section is itself larger than
6499 stub_group_size, in which case we may be toast.) We
6500 should really be keeping track of the total size of stubs
6501 added here, as stubs contribute to the final output
6502 section size. That's a little tricky, and this way will
6503 only break if stubs added make the total size more than
6504 2^25, ie. for the default stub_group_size, if stubs total
6505 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6508 prev
= PREV_SEC (tail
);
6509 /* Set up this stub group. */
6510 htab
->stub_group
[tail
->id
].link_sec
= curr
;
6512 while (tail
!= curr
&& (tail
= prev
) != NULL
);
6514 /* But wait, there's more! Input sections up to stub_group_size
6515 bytes before the stub section can be handled by it too.
6516 Don't do this if we have a really large section after the
6517 stubs, as adding more stubs increases the chance that
6518 branches may not reach into the stub section. */
6519 if (!stubs_always_before_branch
&& !big_sec
)
6523 && ((total
+= tail
->output_offset
- prev
->output_offset
)
6525 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
6528 prev
= PREV_SEC (tail
);
6529 htab
->stub_group
[tail
->id
].link_sec
= curr
;
6535 while (list
-- != htab
->input_list
);
6536 free (htab
->input_list
);
6540 /* Determine and set the size of the stub section for a final link.
6542 The basic idea here is to examine all the relocations looking for
6543 PC-relative calls to a target that is unreachable with a "bl"
6547 ppc64_elf_size_stubs (bfd
*output_bfd
,
6549 struct bfd_link_info
*info
,
6550 bfd_signed_vma group_size
,
6551 asection
*(*add_stub_section
) (const char *, asection
*),
6552 void (*layout_sections_again
) (void))
6554 bfd_size_type stub_group_size
;
6555 bfd_boolean stubs_always_before_branch
;
6556 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6558 /* Stash our params away. */
6559 htab
->stub_bfd
= stub_bfd
;
6560 htab
->add_stub_section
= add_stub_section
;
6561 htab
->layout_sections_again
= layout_sections_again
;
6562 stubs_always_before_branch
= group_size
< 0;
6564 stub_group_size
= -group_size
;
6566 stub_group_size
= group_size
;
6567 if (stub_group_size
== 1)
6569 /* Default values. */
6570 if (stubs_always_before_branch
)
6572 stub_group_size
= 0x1e00000;
6573 if (htab
->has_14bit_branch
)
6574 stub_group_size
= 0x7800;
6578 stub_group_size
= 0x1c00000;
6579 if (htab
->has_14bit_branch
)
6580 stub_group_size
= 0x7000;
6584 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
6589 unsigned int bfd_indx
;
6591 bfd_boolean stub_changed
;
6593 htab
->stub_iteration
+= 1;
6594 stub_changed
= FALSE
;
6596 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
6598 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
6600 Elf_Internal_Shdr
*symtab_hdr
;
6602 Elf_Internal_Sym
*local_syms
= NULL
;
6604 /* We'll need the symbol table in a second. */
6605 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
6606 if (symtab_hdr
->sh_info
== 0)
6609 /* Walk over each section attached to the input bfd. */
6610 for (section
= input_bfd
->sections
;
6612 section
= section
->next
)
6614 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
6616 /* If there aren't any relocs, then there's nothing more
6618 if ((section
->flags
& SEC_RELOC
) == 0
6619 || section
->reloc_count
== 0)
6622 /* If this section is a link-once section that will be
6623 discarded, then don't create any stubs. */
6624 if (section
->output_section
== NULL
6625 || section
->output_section
->owner
!= output_bfd
)
6628 /* Get the relocs. */
6630 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
6632 if (internal_relocs
== NULL
)
6633 goto error_ret_free_local
;
6635 /* Now examine each relocation. */
6636 irela
= internal_relocs
;
6637 irelaend
= irela
+ section
->reloc_count
;
6638 for (; irela
< irelaend
; irela
++)
6640 enum elf_ppc64_reloc_type r_type
;
6641 unsigned int r_indx
;
6642 enum ppc_stub_type stub_type
;
6643 struct ppc_stub_hash_entry
*stub_entry
;
6646 bfd_vma destination
;
6647 struct ppc_link_hash_entry
*hash
;
6648 struct elf_link_hash_entry
*h
;
6649 Elf_Internal_Sym
*sym
;
6651 const asection
*id_sec
;
6653 r_type
= ELF64_R_TYPE (irela
->r_info
);
6654 r_indx
= ELF64_R_SYM (irela
->r_info
);
6656 if (r_type
>= R_PPC64_max
)
6658 bfd_set_error (bfd_error_bad_value
);
6659 goto error_ret_free_internal
;
6662 /* Only look for stubs on branch instructions. */
6663 if (r_type
!= R_PPC64_REL24
6664 && r_type
!= R_PPC64_REL14
6665 && r_type
!= R_PPC64_REL14_BRTAKEN
6666 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
6669 /* Now determine the call target, its name, value,
6672 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6674 goto error_ret_free_internal
;
6675 hash
= (struct ppc_link_hash_entry
*) h
;
6679 /* It's a local symbol. */
6680 sym_value
= sym
->st_value
;
6681 destination
= (sym_value
+ irela
->r_addend
6682 + sym_sec
->output_offset
6683 + sym_sec
->output_section
->vma
);
6687 /* It's an external symbol. */
6689 if (hash
->elf
.root
.type
== bfd_link_hash_defined
6690 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
6692 sym_value
= hash
->elf
.root
.u
.def
.value
;
6693 if (sym_sec
->output_section
!= NULL
)
6694 destination
= (sym_value
+ irela
->r_addend
6695 + sym_sec
->output_offset
6696 + sym_sec
->output_section
->vma
);
6698 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
6700 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
6704 bfd_set_error (bfd_error_bad_value
);
6705 goto error_ret_free_internal
;
6709 /* Determine what (if any) linker stub is needed. */
6710 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
6713 if (stub_type
!= ppc_stub_plt_call
)
6715 /* Check whether we need a TOC adjusting stub.
6716 Since the linker pastes together pieces from
6717 different object files when creating the
6718 _init and _fini functions, it may be that a
6719 call to what looks like a local sym is in
6720 fact a call needing a TOC adjustment. */
6722 && sym_sec
->output_section
!= NULL
6723 && (htab
->stub_group
[sym_sec
->id
].toc_off
6724 != htab
->stub_group
[section
->id
].toc_off
)
6725 && sym_sec
->has_gp_reloc
6726 && section
->has_gp_reloc
)
6727 stub_type
= ppc_stub_long_branch_r2off
;
6730 if (stub_type
== ppc_stub_none
)
6733 /* __tls_get_addr calls might be eliminated. */
6734 if (stub_type
!= ppc_stub_plt_call
6736 && &hash
->elf
== htab
->tls_get_addr
6737 && section
->has_tls_reloc
6738 && irela
!= internal_relocs
)
6743 if (!get_tls_mask (&tls_mask
, &local_syms
,
6744 irela
- 1, input_bfd
))
6745 goto error_ret_free_internal
;
6750 /* Support for grouping stub sections. */
6751 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
6753 /* Get the name of this stub. */
6754 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
6756 goto error_ret_free_internal
;
6758 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
6759 stub_name
, FALSE
, FALSE
);
6760 if (stub_entry
!= NULL
)
6762 /* The proper stub has already been created. */
6767 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
6768 if (stub_entry
== NULL
)
6771 error_ret_free_internal
:
6772 if (elf_section_data (section
)->relocs
== NULL
)
6773 free (internal_relocs
);
6774 error_ret_free_local
:
6775 if (local_syms
!= NULL
6776 && (symtab_hdr
->contents
6777 != (unsigned char *) local_syms
))
6782 stub_entry
->stub_type
= stub_type
;
6783 stub_entry
->target_value
= sym_value
;
6784 stub_entry
->target_section
= sym_sec
;
6785 stub_entry
->h
= hash
;
6786 stub_entry
->addend
= irela
->r_addend
;
6787 stub_changed
= TRUE
;
6790 /* We're done with the internal relocs, free them. */
6791 if (elf_section_data (section
)->relocs
!= internal_relocs
)
6792 free (internal_relocs
);
6795 if (local_syms
!= NULL
6796 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6798 if (!info
->keep_memory
)
6801 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6808 /* OK, we've added some stubs. Find out the new size of the
6810 for (stub_sec
= htab
->stub_bfd
->sections
;
6812 stub_sec
= stub_sec
->next
)
6814 stub_sec
->_raw_size
= 0;
6815 stub_sec
->_cooked_size
= 0;
6817 htab
->brlt
->_raw_size
= 0;
6818 htab
->brlt
->_cooked_size
= 0;
6820 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, htab
);
6822 /* Ask the linker to do its stuff. */
6823 (*htab
->layout_sections_again
) ();
6826 /* It would be nice to strip .branch_lt from the output if the
6827 section is empty, but it's too late. If we strip sections here,
6828 the dynamic symbol table is corrupted since the section symbol
6829 for the stripped section isn't written. */
6834 /* Called after we have determined section placement. If sections
6835 move, we'll be called again. Provide a value for TOCstart. */
6838 ppc64_elf_toc (bfd
*obfd
)
6843 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
6844 order. The TOC starts where the first of these sections starts. */
6845 s
= bfd_get_section_by_name (obfd
, ".got");
6847 s
= bfd_get_section_by_name (obfd
, ".toc");
6849 s
= bfd_get_section_by_name (obfd
, ".tocbss");
6851 s
= bfd_get_section_by_name (obfd
, ".plt");
6854 /* This may happen for
6855 o references to TOC base (SYM@toc / TOC[tc0]) without a
6858 o --gc-sections and empty TOC sections
6860 FIXME: Warn user? */
6862 /* Look for a likely section. We probably won't even be
6864 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
6865 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
6866 == (SEC_ALLOC
| SEC_SMALL_DATA
))
6869 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
6870 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
6871 == (SEC_ALLOC
| SEC_SMALL_DATA
))
6874 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
6875 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
6878 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
6879 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
6885 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
6890 /* Build all the stubs associated with the current output file.
6891 The stubs are kept in a hash table attached to the main linker
6892 hash table. This function is called via gldelf64ppc_finish. */
6895 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
6896 struct bfd_link_info
*info
,
6899 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6903 htab
->emit_stub_syms
= emit_stub_syms
;
6904 for (stub_sec
= htab
->stub_bfd
->sections
;
6906 stub_sec
= stub_sec
->next
)
6910 /* Allocate memory to hold the linker stubs. */
6911 size
= stub_sec
->_raw_size
;
6914 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
6915 if (stub_sec
->contents
== NULL
)
6918 stub_sec
->_cooked_size
= 0;
6921 if (htab
->plt
!= NULL
)
6926 /* Build the .glink plt call stub. */
6927 plt0
= (htab
->plt
->output_section
->vma
6928 + htab
->plt
->output_offset
6929 - (htab
->glink
->output_section
->vma
6930 + htab
->glink
->output_offset
6931 + GLINK_CALL_STUB_SIZE
));
6932 if (plt0
+ 0x80008000 > 0xffffffff)
6934 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
6935 bfd_set_error (bfd_error_bad_value
);
6939 p
= htab
->glink
->contents
;
6940 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
6942 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
6944 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
6946 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
6948 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
6950 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
6952 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
6954 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
6956 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
6958 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
6960 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
6962 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
6964 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
6966 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
6968 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
6970 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
6973 /* Build the .glink lazy link call stubs. */
6975 while (p
< htab
->glink
->contents
+ htab
->glink
->_raw_size
)
6979 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
6984 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
6986 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
6989 bfd_put_32 (htab
->glink
->owner
,
6990 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
6994 htab
->glink
->_cooked_size
= p
- htab
->glink
->contents
;
6997 if (htab
->brlt
->_raw_size
!= 0)
6999 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
7000 htab
->brlt
->_raw_size
);
7001 if (htab
->brlt
->contents
== NULL
)
7005 /* Build the stubs as directed by the stub hash table. */
7006 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
7008 for (stub_sec
= htab
->stub_bfd
->sections
;
7010 stub_sec
= stub_sec
->next
)
7012 if (stub_sec
->_raw_size
!= stub_sec
->_cooked_size
)
7016 if (stub_sec
!= NULL
7017 || htab
->glink
->_raw_size
!= htab
->glink
->_cooked_size
)
7019 htab
->stub_error
= TRUE
;
7020 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
7023 if (htab
->stub_error
)
7028 *stats
= bfd_malloc (500);
7032 sprintf (*stats
, _("linker stubs in %u groups\n"
7035 " long branch %lu\n"
7036 " long toc adj %lu\n"
7038 htab
->stub_bfd
->section_count
,
7039 htab
->stub_count
[ppc_stub_long_branch
- 1],
7040 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
7041 htab
->stub_count
[ppc_stub_plt_branch
- 1],
7042 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
7043 htab
->stub_count
[ppc_stub_plt_call
- 1]);
7048 /* The RELOCATE_SECTION function is called by the ELF backend linker
7049 to handle the relocations for a section.
7051 The relocs are always passed as Rela structures; if the section
7052 actually uses Rel structures, the r_addend field will always be
7055 This function is responsible for adjust the section contents as
7056 necessary, and (if using Rela relocs and generating a
7057 relocateable output file) adjusting the reloc addend as
7060 This function does not have to worry about setting the reloc
7061 address or the reloc symbol index.
7063 LOCAL_SYMS is a pointer to the swapped in local symbols.
7065 LOCAL_SECTIONS is an array giving the section in the input file
7066 corresponding to the st_shndx field of each local symbol.
7068 The global hash table entry for the global symbols can be found
7069 via elf_sym_hashes (input_bfd).
7071 When generating relocateable output, this function must handle
7072 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7073 going to be the section symbol corresponding to the output
7074 section, which means that the addend must be adjusted
7078 ppc64_elf_relocate_section (bfd
*output_bfd
,
7079 struct bfd_link_info
*info
,
7081 asection
*input_section
,
7083 Elf_Internal_Rela
*relocs
,
7084 Elf_Internal_Sym
*local_syms
,
7085 asection
**local_sections
)
7087 struct ppc_link_hash_table
*htab
;
7088 Elf_Internal_Shdr
*symtab_hdr
;
7089 struct elf_link_hash_entry
**sym_hashes
;
7090 Elf_Internal_Rela
*rel
;
7091 Elf_Internal_Rela
*relend
;
7092 Elf_Internal_Rela outrel
;
7094 struct got_entry
**local_got_ents
;
7096 bfd_boolean ret
= TRUE
;
7098 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
7099 bfd_boolean is_power4
= FALSE
;
7101 if (info
->relocateable
)
7104 /* Initialize howto table if needed. */
7105 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
7108 htab
= ppc_hash_table (info
);
7109 local_got_ents
= elf_local_got_ents (input_bfd
);
7110 TOCstart
= elf_gp (output_bfd
);
7111 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
7112 sym_hashes
= elf_sym_hashes (input_bfd
);
7113 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
7116 relend
= relocs
+ input_section
->reloc_count
;
7117 for (; rel
< relend
; rel
++)
7119 enum elf_ppc64_reloc_type r_type
;
7121 bfd_reloc_status_type r
;
7122 Elf_Internal_Sym
*sym
;
7124 struct elf_link_hash_entry
*h
;
7125 struct elf_link_hash_entry
*fdh
;
7126 const char *sym_name
;
7127 unsigned long r_symndx
;
7128 char tls_mask
, tls_gd
, tls_type
;
7130 bfd_boolean unresolved_reloc
;
7133 struct ppc_stub_hash_entry
*stub_entry
;
7134 bfd_vma max_br_offset
;
7137 r_type
= ELF64_R_TYPE (rel
->r_info
);
7138 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7143 unresolved_reloc
= FALSE
;
7146 if (r_symndx
< symtab_hdr
->sh_info
)
7148 /* It's a local symbol. */
7149 sym
= local_syms
+ r_symndx
;
7150 sec
= local_sections
[r_symndx
];
7151 sym_name
= bfd_elf_local_sym_name (input_bfd
, sym
);
7152 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
7153 if (elf_section_data (sec
) != NULL
)
7155 long *opd_sym_adjust
;
7157 opd_sym_adjust
= ppc64_elf_section_data (sec
)->opd
.adjust
;
7158 if (opd_sym_adjust
!= NULL
&& sym
->st_value
% 24 == 0)
7159 relocation
+= opd_sym_adjust
[sym
->st_value
/ 24];
7164 /* It's a global symbol. */
7165 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7166 while (h
->root
.type
== bfd_link_hash_indirect
7167 || h
->root
.type
== bfd_link_hash_warning
)
7168 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7169 sym_name
= h
->root
.root
.string
;
7171 if (h
->root
.type
== bfd_link_hash_defined
7172 || h
->root
.type
== bfd_link_hash_defweak
)
7174 sec
= h
->root
.u
.def
.section
;
7175 if (sec
->output_section
== NULL
)
7176 /* Set a flag that will be cleared later if we find a
7177 relocation value for this symbol. output_section
7178 is typically NULL for symbols satisfied by a shared
7180 unresolved_reloc
= TRUE
;
7182 relocation
= (h
->root
.u
.def
.value
7183 + sec
->output_section
->vma
7184 + sec
->output_offset
);
7186 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7188 else if (info
->shared
7189 && !info
->no_undefined
7190 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
7194 if (! ((*info
->callbacks
->undefined_symbol
)
7195 (info
, h
->root
.root
.string
, input_bfd
, input_section
,
7196 rel
->r_offset
, (!info
->shared
7197 || info
->no_undefined
7198 || ELF_ST_VISIBILITY (h
->other
)))))
7204 /* TLS optimizations. Replace instruction sequences and relocs
7205 based on information we collected in tls_optimize. We edit
7206 RELOCS so that --emit-relocs will output something sensible
7207 for the final instruction stream. */
7210 if (IS_PPC64_TLS_RELOC (r_type
))
7213 tls_mask
= ((struct ppc_link_hash_entry
*) h
)->tls_mask
;
7214 else if (local_got_ents
!= NULL
)
7217 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
7218 tls_mask
= lgot_masks
[r_symndx
];
7222 /* Ensure reloc mapping code below stays sane. */
7223 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
7224 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
7225 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
7226 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
7227 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
7228 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
7229 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
7230 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
7231 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
7232 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
7240 case R_PPC64_TOC16_LO
:
7241 case R_PPC64_TOC16_DS
:
7242 case R_PPC64_TOC16_LO_DS
:
7244 /* Check for toc tls entries. */
7248 retval
= get_tls_mask (&toc_tls
, &local_syms
, rel
, input_bfd
);
7254 tls_mask
= *toc_tls
;
7255 if (r_type
== R_PPC64_TOC16_DS
7256 || r_type
== R_PPC64_TOC16_LO_DS
)
7259 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
7264 /* If we found a GD reloc pair, then we might be
7265 doing a GD->IE transition. */
7268 tls_gd
= TLS_TPRELGD
;
7269 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
7270 goto tls_get_addr_check
;
7272 else if (retval
== 3)
7274 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
7275 goto tls_get_addr_check
;
7282 case R_PPC64_GOT_TPREL16_DS
:
7283 case R_PPC64_GOT_TPREL16_LO_DS
:
7285 && (tls_mask
& TLS_TPREL
) == 0)
7289 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
7291 insn
|= 0x3c0d0000; /* addis 0,13,0 */
7292 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
7293 r_type
= R_PPC64_TPREL16_HA
;
7294 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7301 /* Check for toc tls entries. */
7304 if (!get_tls_mask (&toc_tls
, &local_syms
, rel
, input_bfd
))
7308 tls_mask
= *toc_tls
;
7311 && (tls_mask
& TLS_TPREL
) == 0)
7314 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7315 if ((insn
& ((31 << 26) | (31 << 11)))
7316 == ((31 << 26) | (13 << 11)))
7317 rtra
= insn
& ((1 << 26) - (1 << 16));
7318 else if ((insn
& ((31 << 26) | (31 << 16)))
7319 == ((31 << 26) | (13 << 16)))
7320 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
7323 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
7326 else if ((insn
& (31 << 1)) == 23 << 1
7327 && ((insn
& (31 << 6)) < 14 << 6
7328 || ((insn
& (31 << 6)) >= 16 << 6
7329 && (insn
& (31 << 6)) < 24 << 6)))
7330 /* load and store indexed -> dform. */
7331 insn
= (32 | ((insn
>> 6) & 31)) << 26;
7332 else if ((insn
& (31 << 1)) == 21 << 1
7333 && (insn
& (0x1a << 6)) == 0)
7334 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7335 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
7336 | ((insn
>> 6) & 1));
7337 else if ((insn
& (31 << 1)) == 21 << 1
7338 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
7340 insn
= (58 << 26) | 2;
7344 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7345 r_type
= R_PPC64_TPREL16_LO
;
7346 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7347 /* Was PPC64_TLS which sits on insn boundary, now
7348 PPC64_TPREL16_LO which is at insn+2. */
7353 case R_PPC64_GOT_TLSGD16_HI
:
7354 case R_PPC64_GOT_TLSGD16_HA
:
7355 tls_gd
= TLS_TPRELGD
;
7356 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
7360 case R_PPC64_GOT_TLSLD16_HI
:
7361 case R_PPC64_GOT_TLSLD16_HA
:
7362 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
7365 if ((tls_mask
& tls_gd
) != 0)
7366 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
7367 + R_PPC64_GOT_TPREL16_DS
);
7370 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
7372 r_type
= R_PPC64_NONE
;
7374 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7378 case R_PPC64_GOT_TLSGD16
:
7379 case R_PPC64_GOT_TLSGD16_LO
:
7380 tls_gd
= TLS_TPRELGD
;
7381 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
7382 goto tls_get_addr_check
;
7385 case R_PPC64_GOT_TLSLD16
:
7386 case R_PPC64_GOT_TLSLD16_LO
:
7387 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
7390 if (rel
+ 1 < relend
)
7392 enum elf_ppc64_reloc_type r_type2
;
7393 unsigned long r_symndx2
;
7394 struct elf_link_hash_entry
*h2
;
7395 bfd_vma insn1
, insn2
, insn3
;
7398 /* The next instruction should be a call to
7399 __tls_get_addr. Peek at the reloc to be sure. */
7400 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
7401 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
7402 if (r_symndx2
< symtab_hdr
->sh_info
7403 || (r_type2
!= R_PPC64_REL14
7404 && r_type2
!= R_PPC64_REL14_BRTAKEN
7405 && r_type2
!= R_PPC64_REL14_BRNTAKEN
7406 && r_type2
!= R_PPC64_REL24
))
7409 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
7410 while (h2
->root
.type
== bfd_link_hash_indirect
7411 || h2
->root
.type
== bfd_link_hash_warning
)
7412 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
7413 if (h2
== NULL
|| h2
!= htab
->tls_get_addr
)
7416 /* OK, it checks out. Replace the call. */
7417 offset
= rel
[1].r_offset
;
7418 insn1
= bfd_get_32 (output_bfd
,
7419 contents
+ rel
->r_offset
- 2);
7420 insn3
= bfd_get_32 (output_bfd
,
7421 contents
+ offset
+ 4);
7422 if ((tls_mask
& tls_gd
) != 0)
7425 insn1
&= (1 << 26) - (1 << 2);
7426 insn1
|= 58 << 26; /* ld */
7427 insn2
= 0x7c636a14; /* add 3,3,13 */
7428 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
7429 if ((tls_mask
& TLS_EXPLICIT
) == 0)
7430 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
7431 + R_PPC64_GOT_TPREL16_DS
);
7433 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
7434 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7439 insn1
= 0x3c6d0000; /* addis 3,13,0 */
7440 insn2
= 0x38630000; /* addi 3,3,0 */
7443 /* Was an LD reloc. */
7445 rel
->r_addend
= htab
->tls_sec
->vma
+ DTP_OFFSET
;
7446 rel
[1].r_addend
= htab
->tls_sec
->vma
+ DTP_OFFSET
;
7448 r_type
= R_PPC64_TPREL16_HA
;
7449 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7450 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
7451 R_PPC64_TPREL16_LO
);
7452 rel
[1].r_offset
+= 2;
7455 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
7459 rel
[1].r_offset
+= 4;
7461 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
7462 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7463 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
7466 /* We changed the symbol on an LD reloc. Start over
7467 in order to get h, sym, sec etc. right. */
7475 case R_PPC64_DTPMOD64
:
7476 if (rel
+ 1 < relend
7477 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
7478 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7480 if ((tls_mask
& TLS_GD
) == 0)
7482 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
7483 if ((tls_mask
& TLS_TPRELGD
) != 0)
7484 r_type
= R_PPC64_TPREL64
;
7487 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
7488 r_type
= R_PPC64_NONE
;
7490 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7495 if ((tls_mask
& TLS_LD
) == 0)
7497 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
7498 r_type
= R_PPC64_NONE
;
7499 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7504 case R_PPC64_TPREL64
:
7505 if ((tls_mask
& TLS_TPREL
) == 0)
7507 r_type
= R_PPC64_NONE
;
7508 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7513 /* Handle other relocations that tweak non-addend part of insn. */
7520 /* Branch taken prediction relocations. */
7521 case R_PPC64_ADDR14_BRTAKEN
:
7522 case R_PPC64_REL14_BRTAKEN
:
7523 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7526 /* Branch not taken prediction relocations. */
7527 case R_PPC64_ADDR14_BRNTAKEN
:
7528 case R_PPC64_REL14_BRNTAKEN
:
7529 insn
|= bfd_get_32 (output_bfd
,
7530 contents
+ rel
->r_offset
) & ~(0x01 << 21);
7533 /* Set 'a' bit. This is 0b00010 in BO field for branch
7534 on CR(BI) insns (BO == 001at or 011at), and 0b01000
7535 for branch on CTR insns (BO == 1a00t or 1a01t). */
7536 if ((insn
& (0x14 << 21)) == (0x04 << 21))
7538 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
7545 from
= (rel
->r_offset
7546 + input_section
->output_offset
7547 + input_section
->output_section
->vma
);
7549 /* Invert 'y' bit if not the default. */
7550 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
7554 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7558 /* Calls to functions with a different TOC, such as calls to
7559 shared objects, need to alter the TOC pointer. This is
7560 done using a linkage stub. A REL24 branching to these
7561 linkage stubs needs to be followed by a nop, as the nop
7562 will be replaced with an instruction to restore the TOC
7565 && (fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
) != NULL
7566 && fdh
->plt
.plist
!= NULL
)
7567 || ((fdh
= h
, sec
) != NULL
7568 && sec
->output_section
!= NULL
7569 && (htab
->stub_group
[sec
->id
].toc_off
7570 != htab
->stub_group
[input_section
->id
].toc_off
)))
7571 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
7573 && (stub_entry
->stub_type
== ppc_stub_plt_call
7574 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
7575 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
7577 bfd_boolean can_plt_call
= 0;
7579 if (rel
->r_offset
+ 8 <= input_section
->_cooked_size
)
7581 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
7583 || insn
== CROR_151515
|| insn
== CROR_313131
)
7585 bfd_put_32 (input_bfd
, LD_R2_40R1
,
7586 contents
+ rel
->r_offset
+ 4);
7593 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
7595 /* If this is a plain branch rather than a branch
7596 and link, don't require a nop. */
7597 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7598 if ((insn
& 1) == 0)
7603 if (strcmp (input_section
->output_section
->name
,
7605 || strcmp (input_section
->output_section
->name
,
7607 (*_bfd_error_handler
)
7608 (_("%s(%s+0x%lx): automatic multiple TOCs "
7609 "not supported using your crt files; "
7610 "recompile with -mminimal-toc or upgrade gcc"),
7611 bfd_archive_filename (input_bfd
),
7612 input_section
->name
,
7613 (long) rel
->r_offset
);
7615 (*_bfd_error_handler
)
7616 (_("%s(%s+0x%lx): sibling call optimization to `%s' "
7617 "does not allow automatic multiple TOCs; "
7618 "recompile with -mminimal-toc or "
7619 "-fno-optimize-sibling-calls, "
7620 "or make `%s' extern"),
7621 bfd_archive_filename (input_bfd
),
7622 input_section
->name
,
7623 (long) rel
->r_offset
,
7626 bfd_set_error (bfd_error_bad_value
);
7633 relocation
= (stub_entry
->stub_offset
7634 + stub_entry
->stub_sec
->output_offset
7635 + stub_entry
->stub_sec
->output_section
->vma
);
7636 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
7637 unresolved_reloc
= FALSE
;
7642 && h
->root
.type
== bfd_link_hash_undefweak
7644 && rel
->r_addend
== 0)
7646 /* Tweak calls to undefined weak functions to point at a
7647 blr. We can thus call a weak function without first
7648 checking whether the function is defined. We have a
7649 blr at the end of .sfpr. */
7650 BFD_ASSERT (htab
->sfpr
->_raw_size
!= 0);
7651 relocation
= (htab
->sfpr
->_raw_size
- 4
7652 + htab
->sfpr
->output_offset
7653 + htab
->sfpr
->output_section
->vma
);
7654 from
= (rel
->r_offset
7655 + input_section
->output_offset
7656 + input_section
->output_section
->vma
);
7658 /* But let's not be silly about it. If the blr isn't in
7659 reach, just go to the next instruction. */
7660 if (relocation
- from
+ (1 << 25) >= (1 << 26)
7661 || htab
->sfpr
->_raw_size
== 0)
7662 relocation
= from
+ 4;
7669 addend
= rel
->r_addend
;
7673 (*_bfd_error_handler
)
7674 (_("%s: unknown relocation type %d for symbol %s"),
7675 bfd_archive_filename (input_bfd
), (int) r_type
, sym_name
);
7677 bfd_set_error (bfd_error_bad_value
);
7683 case R_PPC64_GNU_VTINHERIT
:
7684 case R_PPC64_GNU_VTENTRY
:
7687 /* GOT16 relocations. Like an ADDR16 using the symbol's
7688 address in the GOT as relocation value instead of the
7689 symbol's value itself. Also, create a GOT entry for the
7690 symbol and put the symbol value there. */
7691 case R_PPC64_GOT_TLSGD16
:
7692 case R_PPC64_GOT_TLSGD16_LO
:
7693 case R_PPC64_GOT_TLSGD16_HI
:
7694 case R_PPC64_GOT_TLSGD16_HA
:
7695 tls_type
= TLS_TLS
| TLS_GD
;
7698 case R_PPC64_GOT_TLSLD16
:
7699 case R_PPC64_GOT_TLSLD16_LO
:
7700 case R_PPC64_GOT_TLSLD16_HI
:
7701 case R_PPC64_GOT_TLSLD16_HA
:
7702 tls_type
= TLS_TLS
| TLS_LD
;
7705 case R_PPC64_GOT_TPREL16_DS
:
7706 case R_PPC64_GOT_TPREL16_LO_DS
:
7707 case R_PPC64_GOT_TPREL16_HI
:
7708 case R_PPC64_GOT_TPREL16_HA
:
7709 tls_type
= TLS_TLS
| TLS_TPREL
;
7712 case R_PPC64_GOT_DTPREL16_DS
:
7713 case R_PPC64_GOT_DTPREL16_LO_DS
:
7714 case R_PPC64_GOT_DTPREL16_HI
:
7715 case R_PPC64_GOT_DTPREL16_HA
:
7716 tls_type
= TLS_TLS
| TLS_DTPREL
;
7720 case R_PPC64_GOT16_LO
:
7721 case R_PPC64_GOT16_HI
:
7722 case R_PPC64_GOT16_HA
:
7723 case R_PPC64_GOT16_DS
:
7724 case R_PPC64_GOT16_LO_DS
:
7727 /* Relocation is to the entry for this symbol in the global
7731 unsigned long indx
= 0;
7733 if (htab
->got
== NULL
)
7736 if (tls_type
== (TLS_TLS
| TLS_LD
)
7738 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
7739 offp
= &htab
->tlsld_got
.offset
;
7742 struct got_entry
*ent
;
7746 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
7747 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7749 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
7750 /* This is actually a static link, or it is a
7751 -Bsymbolic link and the symbol is defined
7752 locally, or the symbol was forced to be local
7753 because of a version file. */
7758 unresolved_reloc
= FALSE
;
7764 if (local_got_ents
== NULL
)
7766 ent
= local_got_ents
[r_symndx
];
7769 for (; ent
!= NULL
; ent
= ent
->next
)
7770 if (ent
->addend
== rel
->r_addend
7771 && ent
->tls_type
== tls_type
)
7775 offp
= &ent
->got
.offset
;
7778 /* The offset must always be a multiple of 8. We use the
7779 least significant bit to record whether we have already
7780 processed this entry. */
7786 /* Generate relocs for the dynamic linker, except in
7787 the case of TLSLD where we'll use one entry per
7790 if ((info
->shared
|| indx
!= 0)
7792 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7793 || h
->root
.type
!= bfd_link_hash_undefweak
))
7795 outrel
.r_offset
= (htab
->got
->output_section
->vma
7796 + htab
->got
->output_offset
7798 outrel
.r_addend
= rel
->r_addend
;
7799 if (tls_type
& (TLS_LD
| TLS_GD
))
7801 outrel
.r_addend
= 0;
7802 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
7803 if (tls_type
== (TLS_TLS
| TLS_GD
))
7805 loc
= htab
->relgot
->contents
;
7806 loc
+= (htab
->relgot
->reloc_count
++
7807 * sizeof (Elf64_External_Rela
));
7808 bfd_elf64_swap_reloca_out (output_bfd
,
7810 outrel
.r_offset
+= 8;
7811 outrel
.r_addend
= rel
->r_addend
;
7813 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
7816 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
7817 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
7818 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
7819 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
7822 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
7824 /* Write the .got section contents for the sake
7826 loc
= htab
->got
->contents
+ off
;
7827 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
7831 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
7833 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
7835 outrel
.r_addend
+= relocation
;
7836 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
7837 outrel
.r_addend
-= htab
->tls_sec
->vma
;
7839 loc
= htab
->relgot
->contents
;
7840 loc
+= (htab
->relgot
->reloc_count
++
7841 * sizeof (Elf64_External_Rela
));
7842 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
7845 /* Init the .got section contents here if we're not
7846 emitting a reloc. */
7849 relocation
+= rel
->r_addend
;
7850 if (tls_type
== (TLS_TLS
| TLS_LD
))
7852 else if (tls_type
!= 0)
7854 relocation
-= htab
->tls_sec
->vma
+ DTP_OFFSET
;
7855 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
7856 relocation
+= DTP_OFFSET
- TP_OFFSET
;
7858 if (tls_type
== (TLS_TLS
| TLS_GD
))
7860 bfd_put_64 (output_bfd
, relocation
,
7861 htab
->got
->contents
+ off
+ 8);
7866 bfd_put_64 (output_bfd
, relocation
,
7867 htab
->got
->contents
+ off
);
7871 if (off
>= (bfd_vma
) -2)
7874 relocation
= htab
->got
->output_offset
+ off
;
7876 /* TOC base (r2) is TOC start plus 0x8000. */
7877 addend
= - TOC_BASE_OFF
;
7881 case R_PPC64_PLT16_HA
:
7882 case R_PPC64_PLT16_HI
:
7883 case R_PPC64_PLT16_LO
:
7886 /* Relocation is to the entry for this symbol in the
7887 procedure linkage table. */
7889 /* Resolve a PLT reloc against a local symbol directly,
7890 without using the procedure linkage table. */
7894 /* It's possible that we didn't make a PLT entry for this
7895 symbol. This happens when statically linking PIC code,
7896 or when using -Bsymbolic. Go find a match if there is a
7898 if (htab
->plt
!= NULL
)
7900 struct plt_entry
*ent
;
7901 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7902 if (ent
->addend
== rel
->r_addend
7903 && ent
->plt
.offset
!= (bfd_vma
) -1)
7905 relocation
= (htab
->plt
->output_section
->vma
7906 + htab
->plt
->output_offset
7908 unresolved_reloc
= FALSE
;
7914 /* Relocation value is TOC base. */
7915 relocation
= TOCstart
;
7917 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
7918 else if (sec
!= NULL
&& !unresolved_reloc
)
7919 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
7921 unresolved_reloc
= TRUE
;
7924 /* TOC16 relocs. We want the offset relative to the TOC base,
7925 which is the address of the start of the TOC plus 0x8000.
7926 The TOC consists of sections .got, .toc, .tocbss, and .plt,
7929 case R_PPC64_TOC16_LO
:
7930 case R_PPC64_TOC16_HI
:
7931 case R_PPC64_TOC16_DS
:
7932 case R_PPC64_TOC16_LO_DS
:
7933 case R_PPC64_TOC16_HA
:
7934 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
7937 /* Relocate against the beginning of the section. */
7938 case R_PPC64_SECTOFF
:
7939 case R_PPC64_SECTOFF_LO
:
7940 case R_PPC64_SECTOFF_HI
:
7941 case R_PPC64_SECTOFF_DS
:
7942 case R_PPC64_SECTOFF_LO_DS
:
7943 case R_PPC64_SECTOFF_HA
:
7945 addend
-= sec
->output_section
->vma
;
7949 case R_PPC64_REL14_BRNTAKEN
:
7950 case R_PPC64_REL14_BRTAKEN
:
7954 case R_PPC64_TPREL16
:
7955 case R_PPC64_TPREL16_LO
:
7956 case R_PPC64_TPREL16_HI
:
7957 case R_PPC64_TPREL16_HA
:
7958 case R_PPC64_TPREL16_DS
:
7959 case R_PPC64_TPREL16_LO_DS
:
7960 case R_PPC64_TPREL16_HIGHER
:
7961 case R_PPC64_TPREL16_HIGHERA
:
7962 case R_PPC64_TPREL16_HIGHEST
:
7963 case R_PPC64_TPREL16_HIGHESTA
:
7964 addend
-= htab
->tls_sec
->vma
+ TP_OFFSET
;
7966 /* The TPREL16 relocs shouldn't really be used in shared
7967 libs as they will result in DT_TEXTREL being set, but
7968 support them anyway. */
7972 case R_PPC64_DTPREL16
:
7973 case R_PPC64_DTPREL16_LO
:
7974 case R_PPC64_DTPREL16_HI
:
7975 case R_PPC64_DTPREL16_HA
:
7976 case R_PPC64_DTPREL16_DS
:
7977 case R_PPC64_DTPREL16_LO_DS
:
7978 case R_PPC64_DTPREL16_HIGHER
:
7979 case R_PPC64_DTPREL16_HIGHERA
:
7980 case R_PPC64_DTPREL16_HIGHEST
:
7981 case R_PPC64_DTPREL16_HIGHESTA
:
7982 addend
-= htab
->tls_sec
->vma
+ DTP_OFFSET
;
7985 case R_PPC64_DTPMOD64
:
7990 case R_PPC64_TPREL64
:
7991 addend
-= htab
->tls_sec
->vma
+ TP_OFFSET
;
7994 case R_PPC64_DTPREL64
:
7995 addend
-= htab
->tls_sec
->vma
+ DTP_OFFSET
;
7998 /* Relocations that may need to be propagated if this is a
8003 case R_PPC64_ADDR14
:
8004 case R_PPC64_ADDR14_BRNTAKEN
:
8005 case R_PPC64_ADDR14_BRTAKEN
:
8006 case R_PPC64_ADDR16
:
8007 case R_PPC64_ADDR16_DS
:
8008 case R_PPC64_ADDR16_HA
:
8009 case R_PPC64_ADDR16_HI
:
8010 case R_PPC64_ADDR16_HIGHER
:
8011 case R_PPC64_ADDR16_HIGHERA
:
8012 case R_PPC64_ADDR16_HIGHEST
:
8013 case R_PPC64_ADDR16_HIGHESTA
:
8014 case R_PPC64_ADDR16_LO
:
8015 case R_PPC64_ADDR16_LO_DS
:
8016 case R_PPC64_ADDR24
:
8017 case R_PPC64_ADDR32
:
8018 case R_PPC64_ADDR64
:
8019 case R_PPC64_UADDR16
:
8020 case R_PPC64_UADDR32
:
8021 case R_PPC64_UADDR64
:
8022 /* r_symndx will be zero only for relocs against symbols
8023 from removed linkonce sections, or sections discarded by
8031 if ((input_section
->flags
& SEC_ALLOC
) == 0)
8034 if (NO_OPD_RELOCS
&& is_opd
)
8039 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8040 || h
->root
.type
!= bfd_link_hash_undefweak
)
8041 && (MUST_BE_DYN_RELOC (r_type
)
8043 && !SYMBOL_CALLS_LOCAL (info
, h
))))
8044 || (ELIMINATE_COPY_RELOCS
8048 && (h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
8049 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
8050 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0))
8052 Elf_Internal_Rela outrel
;
8053 bfd_boolean skip
, relocate
;
8058 /* When generating a dynamic object, these relocations
8059 are copied into the output file to be resolved at run
8065 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
8066 input_section
, rel
->r_offset
);
8067 if (out_off
== (bfd_vma
) -1)
8069 else if (out_off
== (bfd_vma
) -2)
8070 skip
= TRUE
, relocate
= TRUE
;
8071 out_off
+= (input_section
->output_section
->vma
8072 + input_section
->output_offset
);
8073 outrel
.r_offset
= out_off
;
8074 outrel
.r_addend
= rel
->r_addend
;
8076 /* Optimize unaligned reloc use. */
8077 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
8078 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
8079 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
8080 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
8081 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
8082 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
8083 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
8084 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
8085 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
8088 memset (&outrel
, 0, sizeof outrel
);
8090 && !SYMBOL_REFERENCES_LOCAL (info
, h
)
8092 && r_type
!= R_PPC64_TOC
)
8093 outrel
.r_info
= ELF64_R_INFO (h
->dynindx
, r_type
);
8096 /* This symbol is local, or marked to become local,
8097 or this is an opd section reloc which must point
8098 at a local function. */
8099 outrel
.r_addend
+= relocation
;
8100 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
8102 if (is_opd
&& h
!= NULL
)
8104 /* Lie about opd entries. This case occurs
8105 when building shared libraries and we
8106 reference a function in another shared
8107 lib. The same thing happens for a weak
8108 definition in an application that's
8109 overridden by a strong definition in a
8110 shared lib. (I believe this is a generic
8111 bug in binutils handling of weak syms.)
8112 In these cases we won't use the opd
8113 entry in this lib. */
8114 unresolved_reloc
= FALSE
;
8116 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8118 /* We need to relocate .opd contents for ld.so.
8119 Prelink also wants simple and consistent rules
8120 for relocs. This make all RELATIVE relocs have
8121 *r_offset equal to r_addend. */
8128 if (bfd_is_abs_section (sec
))
8130 else if (sec
== NULL
|| sec
->owner
== NULL
)
8132 bfd_set_error (bfd_error_bad_value
);
8139 osec
= sec
->output_section
;
8140 indx
= elf_section_data (osec
)->dynindx
;
8142 /* We are turning this relocation into one
8143 against a section symbol, so subtract out
8144 the output section's address but not the
8145 offset of the input section in the output
8147 outrel
.r_addend
-= osec
->vma
;
8150 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
8154 sreloc
= elf_section_data (input_section
)->sreloc
;
8158 loc
= sreloc
->contents
;
8159 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
8160 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
8162 /* If this reloc is against an external symbol, it will
8163 be computed at runtime, so there's no need to do
8164 anything now. However, for the sake of prelink ensure
8165 that the section contents are a known value. */
8168 unresolved_reloc
= FALSE
;
8169 /* The value chosen here is quite arbitrary as ld.so
8170 ignores section contents except for the special
8171 case of .opd where the contents might be accessed
8172 before relocation. Choose zero, as that won't
8173 cause reloc overflow. */
8176 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
8177 to improve backward compatibility with older
8179 if (r_type
== R_PPC64_ADDR64
)
8180 addend
= outrel
.r_addend
;
8181 /* Adjust pc_relative relocs to have zero in *r_offset. */
8182 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
8183 addend
= (input_section
->output_section
->vma
8184 + input_section
->output_offset
8191 case R_PPC64_GLOB_DAT
:
8192 case R_PPC64_JMP_SLOT
:
8193 case R_PPC64_RELATIVE
:
8194 /* We shouldn't ever see these dynamic relocs in relocatable
8198 case R_PPC64_PLTGOT16
:
8199 case R_PPC64_PLTGOT16_DS
:
8200 case R_PPC64_PLTGOT16_HA
:
8201 case R_PPC64_PLTGOT16_HI
:
8202 case R_PPC64_PLTGOT16_LO
:
8203 case R_PPC64_PLTGOT16_LO_DS
:
8204 case R_PPC64_PLTREL32
:
8205 case R_PPC64_PLTREL64
:
8206 /* These ones haven't been implemented yet. */
8208 (*_bfd_error_handler
)
8209 (_("%s: relocation %s is not supported for symbol %s."),
8210 bfd_archive_filename (input_bfd
),
8211 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
8213 bfd_set_error (bfd_error_invalid_operation
);
8218 /* Do any further special processing. */
8224 case R_PPC64_ADDR16_HA
:
8225 case R_PPC64_ADDR16_HIGHERA
:
8226 case R_PPC64_ADDR16_HIGHESTA
:
8227 case R_PPC64_GOT16_HA
:
8228 case R_PPC64_PLTGOT16_HA
:
8229 case R_PPC64_PLT16_HA
:
8230 case R_PPC64_TOC16_HA
:
8231 case R_PPC64_SECTOFF_HA
:
8232 case R_PPC64_TPREL16_HA
:
8233 case R_PPC64_DTPREL16_HA
:
8234 case R_PPC64_GOT_TLSGD16_HA
:
8235 case R_PPC64_GOT_TLSLD16_HA
:
8236 case R_PPC64_GOT_TPREL16_HA
:
8237 case R_PPC64_GOT_DTPREL16_HA
:
8238 case R_PPC64_TPREL16_HIGHER
:
8239 case R_PPC64_TPREL16_HIGHERA
:
8240 case R_PPC64_TPREL16_HIGHEST
:
8241 case R_PPC64_TPREL16_HIGHESTA
:
8242 case R_PPC64_DTPREL16_HIGHER
:
8243 case R_PPC64_DTPREL16_HIGHERA
:
8244 case R_PPC64_DTPREL16_HIGHEST
:
8245 case R_PPC64_DTPREL16_HIGHESTA
:
8246 /* It's just possible that this symbol is a weak symbol
8247 that's not actually defined anywhere. In that case,
8248 'sec' would be NULL, and we should leave the symbol
8249 alone (it will be set to zero elsewhere in the link). */
8251 /* Add 0x10000 if sign bit in 0:15 is set.
8252 Bits 0:15 are not used. */
8256 case R_PPC64_ADDR16_DS
:
8257 case R_PPC64_ADDR16_LO_DS
:
8258 case R_PPC64_GOT16_DS
:
8259 case R_PPC64_GOT16_LO_DS
:
8260 case R_PPC64_PLT16_LO_DS
:
8261 case R_PPC64_SECTOFF_DS
:
8262 case R_PPC64_SECTOFF_LO_DS
:
8263 case R_PPC64_TOC16_DS
:
8264 case R_PPC64_TOC16_LO_DS
:
8265 case R_PPC64_PLTGOT16_DS
:
8266 case R_PPC64_PLTGOT16_LO_DS
:
8267 case R_PPC64_GOT_TPREL16_DS
:
8268 case R_PPC64_GOT_TPREL16_LO_DS
:
8269 case R_PPC64_GOT_DTPREL16_DS
:
8270 case R_PPC64_GOT_DTPREL16_LO_DS
:
8271 case R_PPC64_TPREL16_DS
:
8272 case R_PPC64_TPREL16_LO_DS
:
8273 case R_PPC64_DTPREL16_DS
:
8274 case R_PPC64_DTPREL16_LO_DS
:
8275 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
8277 /* If this reloc is against an lq insn, then the value must be
8278 a multiple of 16. This is somewhat of a hack, but the
8279 "correct" way to do this by defining _DQ forms of all the
8280 _DS relocs bloats all reloc switches in this file. It
8281 doesn't seem to make much sense to use any of these relocs
8282 in data, so testing the insn should be safe. */
8283 if ((insn
& (0x3f << 26)) == (56 << 26))
8285 if (((relocation
+ addend
) & mask
) != 0)
8287 (*_bfd_error_handler
)
8288 (_("%s: error: relocation %s not a multiple of %d"),
8289 bfd_archive_filename (input_bfd
),
8290 ppc64_elf_howto_table
[r_type
]->name
,
8292 bfd_set_error (bfd_error_bad_value
);
8299 case R_PPC64_REL14_BRNTAKEN
:
8300 case R_PPC64_REL14_BRTAKEN
:
8301 max_br_offset
= 1 << 15;
8305 max_br_offset
= 1 << 25;
8308 /* If the branch is out of reach or the TOC register needs
8309 adjusting, then redirect the call to the local stub for
8311 from
= (rel
->r_offset
8312 + input_section
->output_offset
8313 + input_section
->output_section
->vma
);
8314 if ((relocation
+ addend
- from
+ max_br_offset
>= 2 * max_br_offset
8316 && sec
->output_section
!= NULL
8317 && (htab
->stub_group
[sec
->id
].toc_off
8318 != htab
->stub_group
[input_section
->id
].toc_off
)))
8319 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
,
8320 rel
, htab
)) != NULL
)
8322 /* Munge up the value and addend so that we call the stub
8323 rather than the procedure directly. */
8324 relocation
= (stub_entry
->stub_offset
8325 + stub_entry
->stub_sec
->output_offset
8326 + stub_entry
->stub_sec
->output_section
->vma
);
8332 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8333 because such sections are not SEC_ALLOC and thus ld.so will
8334 not process them. */
8335 if (unresolved_reloc
8336 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
8337 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
8339 (*_bfd_error_handler
)
8340 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
8341 bfd_archive_filename (input_bfd
),
8342 bfd_get_section_name (input_bfd
, input_section
),
8343 (long) rel
->r_offset
,
8344 ppc64_elf_howto_table
[(int) r_type
]->name
,
8345 h
->root
.root
.string
);
8349 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
8357 if (r
!= bfd_reloc_ok
)
8359 if (sym_name
== NULL
)
8360 sym_name
= "(null)";
8361 if (r
== bfd_reloc_overflow
)
8366 && h
->root
.type
== bfd_link_hash_undefweak
8367 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
8369 /* Assume this is a call protected by other code that
8370 detects the symbol is undefined. If this is the case,
8371 we can safely ignore the overflow. If not, the
8372 program is hosed anyway, and a little warning isn't
8378 if (!((*info
->callbacks
->reloc_overflow
)
8379 (info
, sym_name
, ppc64_elf_howto_table
[r_type
]->name
,
8380 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
)))
8385 (*_bfd_error_handler
)
8386 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
8387 bfd_archive_filename (input_bfd
),
8388 bfd_get_section_name (input_bfd
, input_section
),
8389 (long) rel
->r_offset
,
8390 ppc64_elf_howto_table
[r_type
]->name
,
8401 /* Finish up dynamic symbol handling. We set the contents of various
8402 dynamic sections here. */
8405 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
8406 struct bfd_link_info
*info
,
8407 struct elf_link_hash_entry
*h
,
8408 Elf_Internal_Sym
*sym
)
8410 struct ppc_link_hash_table
*htab
;
8413 htab
= ppc_hash_table (info
);
8414 dynobj
= htab
->elf
.dynobj
;
8416 if (((struct ppc_link_hash_entry
*) h
)->is_func_descriptor
)
8418 struct plt_entry
*ent
;
8419 Elf_Internal_Rela rela
;
8422 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8423 if (ent
->plt
.offset
!= (bfd_vma
) -1)
8425 /* This symbol has an entry in the procedure linkage
8426 table. Set it up. */
8428 if (htab
->plt
== NULL
8429 || htab
->relplt
== NULL
8430 || htab
->glink
== NULL
)
8433 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8434 fill in the PLT entry. */
8435 rela
.r_offset
= (htab
->plt
->output_section
->vma
8436 + htab
->plt
->output_offset
8438 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
8439 rela
.r_addend
= ent
->addend
;
8441 loc
= htab
->relplt
->contents
;
8442 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
8443 * sizeof (Elf64_External_Rela
));
8444 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
8448 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
8450 Elf_Internal_Rela rela
;
8453 /* This symbol needs a copy reloc. Set it up. */
8455 if (h
->dynindx
== -1
8456 || (h
->root
.type
!= bfd_link_hash_defined
8457 && h
->root
.type
!= bfd_link_hash_defweak
)
8458 || htab
->relbss
== NULL
)
8461 rela
.r_offset
= (h
->root
.u
.def
.value
8462 + h
->root
.u
.def
.section
->output_section
->vma
8463 + h
->root
.u
.def
.section
->output_offset
);
8464 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
8466 loc
= htab
->relbss
->contents
;
8467 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
8468 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
8471 /* Mark some specially defined symbols as absolute. */
8472 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
8473 sym
->st_shndx
= SHN_ABS
;
8478 /* Used to decide how to sort relocs in an optimal manner for the
8479 dynamic linker, before writing them out. */
8481 static enum elf_reloc_type_class
8482 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
8484 enum elf_ppc64_reloc_type r_type
;
8486 r_type
= ELF64_R_TYPE (rela
->r_info
);
8489 case R_PPC64_RELATIVE
:
8490 return reloc_class_relative
;
8491 case R_PPC64_JMP_SLOT
:
8492 return reloc_class_plt
;
8494 return reloc_class_copy
;
8496 return reloc_class_normal
;
8500 /* Finish up the dynamic sections. */
8503 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
8504 struct bfd_link_info
*info
)
8506 struct ppc_link_hash_table
*htab
;
8510 htab
= ppc_hash_table (info
);
8511 dynobj
= htab
->elf
.dynobj
;
8512 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
8514 if (htab
->elf
.dynamic_sections_created
)
8516 Elf64_External_Dyn
*dyncon
, *dynconend
;
8518 if (sdyn
== NULL
|| htab
->got
== NULL
)
8521 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
8522 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
8523 for (; dyncon
< dynconend
; dyncon
++)
8525 Elf_Internal_Dyn dyn
;
8528 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
8535 case DT_PPC64_GLINK
:
8537 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8538 /* We stupidly defined DT_PPC64_GLINK to be the start
8539 of glink rather than the first entry point, which is
8540 what ld.so needs, and now have a bigger stub to
8541 support automatic multiple TOCs. */
8542 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
8546 s
= bfd_get_section_by_name (output_bfd
, ".opd");
8549 dyn
.d_un
.d_ptr
= s
->vma
;
8552 case DT_PPC64_OPDSZ
:
8553 s
= bfd_get_section_by_name (output_bfd
, ".opd");
8556 dyn
.d_un
.d_val
= s
->_raw_size
;
8561 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8566 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8570 dyn
.d_un
.d_val
= htab
->relplt
->_raw_size
;
8574 /* Don't count procedure linkage table relocs in the
8575 overall reloc count. */
8579 dyn
.d_un
.d_val
-= s
->_raw_size
;
8583 /* We may not be using the standard ELF linker script.
8584 If .rela.plt is the first .rela section, we adjust
8585 DT_RELA to not include it. */
8589 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
8591 dyn
.d_un
.d_ptr
+= s
->_raw_size
;
8595 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8599 if (htab
->got
!= NULL
&& htab
->got
->_raw_size
!= 0)
8601 /* Fill in the first entry in the global offset table.
8602 We use it to hold the link-time TOCbase. */
8603 bfd_put_64 (output_bfd
,
8604 elf_gp (output_bfd
) + TOC_BASE_OFF
,
8605 htab
->got
->contents
);
8607 /* Set .got entry size. */
8608 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
8611 if (htab
->plt
!= NULL
&& htab
->plt
->_raw_size
!= 0)
8613 /* Set .plt entry size. */
8614 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
8621 #include "elf64-target.h"