1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
3 Free Software Foundation, Inc.
5 based on elf32-ppc.c by Ian Lance Taylor.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
33 #include "elf/ppc64.h"
34 #include "elf64-ppc.h"
36 static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc64_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
57 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58 #define TARGET_LITTLE_NAME "elf64-powerpcle"
59 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60 #define TARGET_BIG_NAME "elf64-powerpc"
61 #define ELF_ARCH bfd_arch_powerpc
62 #define ELF_MACHINE_CODE EM_PPC64
63 #define ELF_MAXPAGESIZE 0x10000
64 #define ELF_COMMONPAGESIZE 0x1000
65 #define elf_info_to_howto ppc64_elf_info_to_howto
67 #define elf_backend_want_got_sym 0
68 #define elf_backend_want_plt_sym 0
69 #define elf_backend_plt_alignment 3
70 #define elf_backend_plt_not_loaded 1
71 #define elf_backend_got_header_size 8
72 #define elf_backend_can_gc_sections 1
73 #define elf_backend_can_refcount 1
74 #define elf_backend_rela_normal 1
76 #define bfd_elf64_mkobject ppc64_elf_mkobject
77 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
78 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
79 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
80 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
81 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
82 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
84 #define elf_backend_object_p ppc64_elf_object_p
85 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
86 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
87 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
88 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
89 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
90 #define elf_backend_check_directives ppc64_elf_check_directives
91 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
92 #define elf_backend_check_relocs ppc64_elf_check_relocs
93 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
94 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
95 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
96 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
97 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
98 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
99 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
100 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
101 #define elf_backend_action_discarded ppc64_elf_action_discarded
102 #define elf_backend_relocate_section ppc64_elf_relocate_section
103 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
104 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
105 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
106 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
107 #define elf_backend_special_sections ppc64_elf_special_sections
109 /* The name of the dynamic interpreter. This is put in the .interp
111 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
113 /* The size in bytes of an entry in the procedure linkage table. */
114 #define PLT_ENTRY_SIZE 24
116 /* The initial size of the plt reserved for the dynamic linker. */
117 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
119 /* TOC base pointers offset from start of TOC. */
120 #define TOC_BASE_OFF 0x8000
122 /* Offset of tp and dtp pointers from start of TLS block. */
123 #define TP_OFFSET 0x7000
124 #define DTP_OFFSET 0x8000
126 /* .plt call stub instructions. The normal stub is like this, but
127 sometimes the .plt entry crosses a 64k boundary and we need to
128 insert an addis to adjust r12. */
129 #define PLT_CALL_STUB_SIZE (7*4)
130 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
131 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
132 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
133 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
134 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
135 /* ld %r11,xxx+16@l(%r12) */
136 #define BCTR 0x4e800420 /* bctr */
139 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
140 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
141 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
143 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
145 /* glink call stub instructions. We enter with the index in R0. */
146 #define GLINK_CALL_STUB_SIZE (16*4)
150 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
151 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
153 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
154 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
155 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
156 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
164 #define NOP 0x60000000
166 /* Some other nops. */
167 #define CROR_151515 0x4def7b82
168 #define CROR_313131 0x4ffffb82
170 /* .glink entries for the first 32k functions are two instructions. */
171 #define LI_R0_0 0x38000000 /* li %r0,0 */
172 #define B_DOT 0x48000000 /* b . */
174 /* After that, we need two instructions to load the index, followed by
176 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
177 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
179 /* Instructions used by the save and restore reg functions. */
180 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
181 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
182 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
183 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
184 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
185 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
186 #define LI_R12_0 0x39800000 /* li %r12,0 */
187 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
188 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
189 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
190 #define BLR 0x4e800020 /* blr */
192 /* Since .opd is an array of descriptors and each entry will end up
193 with identical R_PPC64_RELATIVE relocs, there is really no need to
194 propagate .opd relocs; The dynamic linker should be taught to
195 relocate .opd without reloc entries. */
196 #ifndef NO_OPD_RELOCS
197 #define NO_OPD_RELOCS 0
200 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
202 /* Relocation HOWTO's. */
203 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
205 static reloc_howto_type ppc64_elf_howto_raw[] = {
206 /* This reloc does nothing. */
207 HOWTO (R_PPC64_NONE, /* type */
209 2, /* size (0 = byte, 1 = short, 2 = long) */
211 FALSE, /* pc_relative */
213 complain_overflow_dont, /* complain_on_overflow */
214 bfd_elf_generic_reloc, /* special_function */
215 "R_PPC64_NONE", /* name */
216 FALSE, /* partial_inplace */
219 FALSE), /* pcrel_offset */
221 /* A standard 32 bit relocation. */
222 HOWTO (R_PPC64_ADDR32, /* type */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
226 FALSE, /* pc_relative */
228 complain_overflow_bitfield, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_PPC64_ADDR32", /* name */
231 FALSE, /* partial_inplace */
233 0xffffffff, /* dst_mask */
234 FALSE), /* pcrel_offset */
236 /* An absolute 26 bit branch; the lower two bits must be zero.
237 FIXME: we don't check that, we just clear them. */
238 HOWTO (R_PPC64_ADDR24, /* type */
240 2, /* size (0 = byte, 1 = short, 2 = long) */
242 FALSE, /* pc_relative */
244 complain_overflow_bitfield, /* complain_on_overflow */
245 bfd_elf_generic_reloc, /* special_function */
246 "R_PPC64_ADDR24", /* name */
247 FALSE, /* partial_inplace */
249 0x03fffffc, /* dst_mask */
250 FALSE), /* pcrel_offset */
252 /* A standard 16 bit relocation. */
253 HOWTO (R_PPC64_ADDR16, /* type */
255 1, /* size (0 = byte, 1 = short, 2 = long) */
257 FALSE, /* pc_relative */
259 complain_overflow_bitfield, /* complain_on_overflow */
260 bfd_elf_generic_reloc, /* special_function */
261 "R_PPC64_ADDR16", /* name */
262 FALSE, /* partial_inplace */
264 0xffff, /* dst_mask */
265 FALSE), /* pcrel_offset */
267 /* A 16 bit relocation without overflow. */
268 HOWTO (R_PPC64_ADDR16_LO, /* type */
270 1, /* size (0 = byte, 1 = short, 2 = long) */
272 FALSE, /* pc_relative */
274 complain_overflow_dont,/* complain_on_overflow */
275 bfd_elf_generic_reloc, /* special_function */
276 "R_PPC64_ADDR16_LO", /* name */
277 FALSE, /* partial_inplace */
279 0xffff, /* dst_mask */
280 FALSE), /* pcrel_offset */
282 /* Bits 16-31 of an address. */
283 HOWTO (R_PPC64_ADDR16_HI, /* type */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
287 FALSE, /* pc_relative */
289 complain_overflow_dont, /* complain_on_overflow */
290 bfd_elf_generic_reloc, /* special_function */
291 "R_PPC64_ADDR16_HI", /* name */
292 FALSE, /* partial_inplace */
294 0xffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
297 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
298 bits, treated as a signed number, is negative. */
299 HOWTO (R_PPC64_ADDR16_HA, /* type */
301 1, /* size (0 = byte, 1 = short, 2 = long) */
303 FALSE, /* pc_relative */
305 complain_overflow_dont, /* complain_on_overflow */
306 ppc64_elf_ha_reloc, /* special_function */
307 "R_PPC64_ADDR16_HA", /* name */
308 FALSE, /* partial_inplace */
310 0xffff, /* dst_mask */
311 FALSE), /* pcrel_offset */
313 /* An absolute 16 bit branch; the lower two bits must be zero.
314 FIXME: we don't check that, we just clear them. */
315 HOWTO (R_PPC64_ADDR14, /* type */
317 2, /* size (0 = byte, 1 = short, 2 = long) */
319 FALSE, /* pc_relative */
321 complain_overflow_bitfield, /* complain_on_overflow */
322 ppc64_elf_branch_reloc, /* special_function */
323 "R_PPC64_ADDR14", /* name */
324 FALSE, /* partial_inplace */
326 0x0000fffc, /* dst_mask */
327 FALSE), /* pcrel_offset */
329 /* An absolute 16 bit branch, for which bit 10 should be set to
330 indicate that the branch is expected to be taken. The lower two
331 bits must be zero. */
332 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
334 2, /* size (0 = byte, 1 = short, 2 = long) */
336 FALSE, /* pc_relative */
338 complain_overflow_bitfield, /* complain_on_overflow */
339 ppc64_elf_brtaken_reloc, /* special_function */
340 "R_PPC64_ADDR14_BRTAKEN",/* name */
341 FALSE, /* partial_inplace */
343 0x0000fffc, /* dst_mask */
344 FALSE), /* pcrel_offset */
346 /* An absolute 16 bit branch, for which bit 10 should be set to
347 indicate that the branch is not expected to be taken. The lower
348 two bits must be zero. */
349 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
351 2, /* size (0 = byte, 1 = short, 2 = long) */
353 FALSE, /* pc_relative */
355 complain_overflow_bitfield, /* complain_on_overflow */
356 ppc64_elf_brtaken_reloc, /* special_function */
357 "R_PPC64_ADDR14_BRNTAKEN",/* name */
358 FALSE, /* partial_inplace */
360 0x0000fffc, /* dst_mask */
361 FALSE), /* pcrel_offset */
363 /* A relative 26 bit branch; the lower two bits must be zero. */
364 HOWTO (R_PPC64_REL24, /* type */
366 2, /* size (0 = byte, 1 = short, 2 = long) */
368 TRUE, /* pc_relative */
370 complain_overflow_signed, /* complain_on_overflow */
371 ppc64_elf_branch_reloc, /* special_function */
372 "R_PPC64_REL24", /* name */
373 FALSE, /* partial_inplace */
375 0x03fffffc, /* dst_mask */
376 TRUE), /* pcrel_offset */
378 /* A relative 16 bit branch; the lower two bits must be zero. */
379 HOWTO (R_PPC64_REL14, /* type */
381 2, /* size (0 = byte, 1 = short, 2 = long) */
383 TRUE, /* pc_relative */
385 complain_overflow_signed, /* complain_on_overflow */
386 ppc64_elf_branch_reloc, /* special_function */
387 "R_PPC64_REL14", /* name */
388 FALSE, /* partial_inplace */
390 0x0000fffc, /* dst_mask */
391 TRUE), /* pcrel_offset */
393 /* A relative 16 bit branch. Bit 10 should be set to indicate that
394 the branch is expected to be taken. The lower two bits must be
396 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
400 TRUE, /* pc_relative */
402 complain_overflow_signed, /* complain_on_overflow */
403 ppc64_elf_brtaken_reloc, /* special_function */
404 "R_PPC64_REL14_BRTAKEN", /* name */
405 FALSE, /* partial_inplace */
407 0x0000fffc, /* dst_mask */
408 TRUE), /* pcrel_offset */
410 /* A relative 16 bit branch. Bit 10 should be set to indicate that
411 the branch is not expected to be taken. The lower two bits must
413 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
415 2, /* size (0 = byte, 1 = short, 2 = long) */
417 TRUE, /* pc_relative */
419 complain_overflow_signed, /* complain_on_overflow */
420 ppc64_elf_brtaken_reloc, /* special_function */
421 "R_PPC64_REL14_BRNTAKEN",/* name */
422 FALSE, /* partial_inplace */
424 0x0000fffc, /* dst_mask */
425 TRUE), /* pcrel_offset */
427 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
429 HOWTO (R_PPC64_GOT16, /* type */
431 1, /* size (0 = byte, 1 = short, 2 = long) */
433 FALSE, /* pc_relative */
435 complain_overflow_signed, /* complain_on_overflow */
436 ppc64_elf_unhandled_reloc, /* special_function */
437 "R_PPC64_GOT16", /* name */
438 FALSE, /* partial_inplace */
440 0xffff, /* dst_mask */
441 FALSE), /* pcrel_offset */
443 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
445 HOWTO (R_PPC64_GOT16_LO, /* type */
447 1, /* size (0 = byte, 1 = short, 2 = long) */
449 FALSE, /* pc_relative */
451 complain_overflow_dont, /* complain_on_overflow */
452 ppc64_elf_unhandled_reloc, /* special_function */
453 "R_PPC64_GOT16_LO", /* name */
454 FALSE, /* partial_inplace */
456 0xffff, /* dst_mask */
457 FALSE), /* pcrel_offset */
459 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
461 HOWTO (R_PPC64_GOT16_HI, /* type */
463 1, /* size (0 = byte, 1 = short, 2 = long) */
465 FALSE, /* pc_relative */
467 complain_overflow_dont,/* complain_on_overflow */
468 ppc64_elf_unhandled_reloc, /* special_function */
469 "R_PPC64_GOT16_HI", /* name */
470 FALSE, /* partial_inplace */
472 0xffff, /* dst_mask */
473 FALSE), /* pcrel_offset */
475 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
477 HOWTO (R_PPC64_GOT16_HA, /* type */
479 1, /* size (0 = byte, 1 = short, 2 = long) */
481 FALSE, /* pc_relative */
483 complain_overflow_dont,/* complain_on_overflow */
484 ppc64_elf_unhandled_reloc, /* special_function */
485 "R_PPC64_GOT16_HA", /* name */
486 FALSE, /* partial_inplace */
488 0xffff, /* dst_mask */
489 FALSE), /* pcrel_offset */
491 /* This is used only by the dynamic linker. The symbol should exist
492 both in the object being run and in some shared library. The
493 dynamic linker copies the data addressed by the symbol from the
494 shared library into the object, because the object being
495 run has to have the data at some particular address. */
496 HOWTO (R_PPC64_COPY, /* type */
498 0, /* this one is variable size */
500 FALSE, /* pc_relative */
502 complain_overflow_dont, /* complain_on_overflow */
503 ppc64_elf_unhandled_reloc, /* special_function */
504 "R_PPC64_COPY", /* name */
505 FALSE, /* partial_inplace */
508 FALSE), /* pcrel_offset */
510 /* Like R_PPC64_ADDR64, but used when setting global offset table
512 HOWTO (R_PPC64_GLOB_DAT, /* type */
514 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
516 FALSE, /* pc_relative */
518 complain_overflow_dont, /* complain_on_overflow */
519 ppc64_elf_unhandled_reloc, /* special_function */
520 "R_PPC64_GLOB_DAT", /* name */
521 FALSE, /* partial_inplace */
523 ONES (64), /* dst_mask */
524 FALSE), /* pcrel_offset */
526 /* Created by the link editor. Marks a procedure linkage table
527 entry for a symbol. */
528 HOWTO (R_PPC64_JMP_SLOT, /* type */
530 0, /* size (0 = byte, 1 = short, 2 = long) */
532 FALSE, /* pc_relative */
534 complain_overflow_dont, /* complain_on_overflow */
535 ppc64_elf_unhandled_reloc, /* special_function */
536 "R_PPC64_JMP_SLOT", /* name */
537 FALSE, /* partial_inplace */
540 FALSE), /* pcrel_offset */
542 /* Used only by the dynamic linker. When the object is run, this
543 doubleword64 is set to the load address of the object, plus the
545 HOWTO (R_PPC64_RELATIVE, /* type */
547 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
549 FALSE, /* pc_relative */
551 complain_overflow_dont, /* complain_on_overflow */
552 bfd_elf_generic_reloc, /* special_function */
553 "R_PPC64_RELATIVE", /* name */
554 FALSE, /* partial_inplace */
556 ONES (64), /* dst_mask */
557 FALSE), /* pcrel_offset */
559 /* Like R_PPC64_ADDR32, but may be unaligned. */
560 HOWTO (R_PPC64_UADDR32, /* type */
562 2, /* size (0 = byte, 1 = short, 2 = long) */
564 FALSE, /* pc_relative */
566 complain_overflow_bitfield, /* complain_on_overflow */
567 bfd_elf_generic_reloc, /* special_function */
568 "R_PPC64_UADDR32", /* name */
569 FALSE, /* partial_inplace */
571 0xffffffff, /* dst_mask */
572 FALSE), /* pcrel_offset */
574 /* Like R_PPC64_ADDR16, but may be unaligned. */
575 HOWTO (R_PPC64_UADDR16, /* type */
577 1, /* size (0 = byte, 1 = short, 2 = long) */
579 FALSE, /* pc_relative */
581 complain_overflow_bitfield, /* complain_on_overflow */
582 bfd_elf_generic_reloc, /* special_function */
583 "R_PPC64_UADDR16", /* name */
584 FALSE, /* partial_inplace */
586 0xffff, /* dst_mask */
587 FALSE), /* pcrel_offset */
589 /* 32-bit PC relative. */
590 HOWTO (R_PPC64_REL32, /* type */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
594 TRUE, /* pc_relative */
596 /* FIXME: Verify. Was complain_overflow_bitfield. */
597 complain_overflow_signed, /* complain_on_overflow */
598 bfd_elf_generic_reloc, /* special_function */
599 "R_PPC64_REL32", /* name */
600 FALSE, /* partial_inplace */
602 0xffffffff, /* dst_mask */
603 TRUE), /* pcrel_offset */
605 /* 32-bit relocation to the symbol's procedure linkage table. */
606 HOWTO (R_PPC64_PLT32, /* type */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
610 FALSE, /* pc_relative */
612 complain_overflow_bitfield, /* complain_on_overflow */
613 ppc64_elf_unhandled_reloc, /* special_function */
614 "R_PPC64_PLT32", /* name */
615 FALSE, /* partial_inplace */
617 0xffffffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
620 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
621 FIXME: R_PPC64_PLTREL32 not supported. */
622 HOWTO (R_PPC64_PLTREL32, /* type */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
626 TRUE, /* pc_relative */
628 complain_overflow_signed, /* complain_on_overflow */
629 bfd_elf_generic_reloc, /* special_function */
630 "R_PPC64_PLTREL32", /* name */
631 FALSE, /* partial_inplace */
633 0xffffffff, /* dst_mask */
634 TRUE), /* pcrel_offset */
636 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
638 HOWTO (R_PPC64_PLT16_LO, /* type */
640 1, /* size (0 = byte, 1 = short, 2 = long) */
642 FALSE, /* pc_relative */
644 complain_overflow_dont, /* complain_on_overflow */
645 ppc64_elf_unhandled_reloc, /* special_function */
646 "R_PPC64_PLT16_LO", /* name */
647 FALSE, /* partial_inplace */
649 0xffff, /* dst_mask */
650 FALSE), /* pcrel_offset */
652 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
654 HOWTO (R_PPC64_PLT16_HI, /* type */
656 1, /* size (0 = byte, 1 = short, 2 = long) */
658 FALSE, /* pc_relative */
660 complain_overflow_dont, /* complain_on_overflow */
661 ppc64_elf_unhandled_reloc, /* special_function */
662 "R_PPC64_PLT16_HI", /* name */
663 FALSE, /* partial_inplace */
665 0xffff, /* dst_mask */
666 FALSE), /* pcrel_offset */
668 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
670 HOWTO (R_PPC64_PLT16_HA, /* type */
672 1, /* size (0 = byte, 1 = short, 2 = long) */
674 FALSE, /* pc_relative */
676 complain_overflow_dont, /* complain_on_overflow */
677 ppc64_elf_unhandled_reloc, /* special_function */
678 "R_PPC64_PLT16_HA", /* name */
679 FALSE, /* partial_inplace */
681 0xffff, /* dst_mask */
682 FALSE), /* pcrel_offset */
684 /* 16-bit section relative relocation. */
685 HOWTO (R_PPC64_SECTOFF, /* type */
687 1, /* size (0 = byte, 1 = short, 2 = long) */
689 FALSE, /* pc_relative */
691 complain_overflow_bitfield, /* complain_on_overflow */
692 ppc64_elf_sectoff_reloc, /* special_function */
693 "R_PPC64_SECTOFF", /* name */
694 FALSE, /* partial_inplace */
696 0xffff, /* dst_mask */
697 FALSE), /* pcrel_offset */
699 /* Like R_PPC64_SECTOFF, but no overflow warning. */
700 HOWTO (R_PPC64_SECTOFF_LO, /* type */
702 1, /* size (0 = byte, 1 = short, 2 = long) */
704 FALSE, /* pc_relative */
706 complain_overflow_dont, /* complain_on_overflow */
707 ppc64_elf_sectoff_reloc, /* special_function */
708 "R_PPC64_SECTOFF_LO", /* name */
709 FALSE, /* partial_inplace */
711 0xffff, /* dst_mask */
712 FALSE), /* pcrel_offset */
714 /* 16-bit upper half section relative relocation. */
715 HOWTO (R_PPC64_SECTOFF_HI, /* type */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
719 FALSE, /* pc_relative */
721 complain_overflow_dont, /* complain_on_overflow */
722 ppc64_elf_sectoff_reloc, /* special_function */
723 "R_PPC64_SECTOFF_HI", /* name */
724 FALSE, /* partial_inplace */
726 0xffff, /* dst_mask */
727 FALSE), /* pcrel_offset */
729 /* 16-bit upper half adjusted section relative relocation. */
730 HOWTO (R_PPC64_SECTOFF_HA, /* type */
732 1, /* size (0 = byte, 1 = short, 2 = long) */
734 FALSE, /* pc_relative */
736 complain_overflow_dont, /* complain_on_overflow */
737 ppc64_elf_sectoff_ha_reloc, /* special_function */
738 "R_PPC64_SECTOFF_HA", /* name */
739 FALSE, /* partial_inplace */
741 0xffff, /* dst_mask */
742 FALSE), /* pcrel_offset */
744 /* Like R_PPC64_REL24 without touching the two least significant bits. */
745 HOWTO (R_PPC64_REL30, /* type */
747 2, /* size (0 = byte, 1 = short, 2 = long) */
749 TRUE, /* pc_relative */
751 complain_overflow_dont, /* complain_on_overflow */
752 bfd_elf_generic_reloc, /* special_function */
753 "R_PPC64_REL30", /* name */
754 FALSE, /* partial_inplace */
756 0xfffffffc, /* dst_mask */
757 TRUE), /* pcrel_offset */
759 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
761 /* A standard 64-bit relocation. */
762 HOWTO (R_PPC64_ADDR64, /* type */
764 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
766 FALSE, /* pc_relative */
768 complain_overflow_dont, /* complain_on_overflow */
769 bfd_elf_generic_reloc, /* special_function */
770 "R_PPC64_ADDR64", /* name */
771 FALSE, /* partial_inplace */
773 ONES (64), /* dst_mask */
774 FALSE), /* pcrel_offset */
776 /* The bits 32-47 of an address. */
777 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
779 1, /* size (0 = byte, 1 = short, 2 = long) */
781 FALSE, /* pc_relative */
783 complain_overflow_dont, /* complain_on_overflow */
784 bfd_elf_generic_reloc, /* special_function */
785 "R_PPC64_ADDR16_HIGHER", /* name */
786 FALSE, /* partial_inplace */
788 0xffff, /* dst_mask */
789 FALSE), /* pcrel_offset */
791 /* The bits 32-47 of an address, plus 1 if the contents of the low
792 16 bits, treated as a signed number, is negative. */
793 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
795 1, /* size (0 = byte, 1 = short, 2 = long) */
797 FALSE, /* pc_relative */
799 complain_overflow_dont, /* complain_on_overflow */
800 ppc64_elf_ha_reloc, /* special_function */
801 "R_PPC64_ADDR16_HIGHERA", /* name */
802 FALSE, /* partial_inplace */
804 0xffff, /* dst_mask */
805 FALSE), /* pcrel_offset */
807 /* The bits 48-63 of an address. */
808 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
810 1, /* size (0 = byte, 1 = short, 2 = long) */
812 FALSE, /* pc_relative */
814 complain_overflow_dont, /* complain_on_overflow */
815 bfd_elf_generic_reloc, /* special_function */
816 "R_PPC64_ADDR16_HIGHEST", /* name */
817 FALSE, /* partial_inplace */
819 0xffff, /* dst_mask */
820 FALSE), /* pcrel_offset */
822 /* The bits 48-63 of an address, plus 1 if the contents of the low
823 16 bits, treated as a signed number, is negative. */
824 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
826 1, /* size (0 = byte, 1 = short, 2 = long) */
828 FALSE, /* pc_relative */
830 complain_overflow_dont, /* complain_on_overflow */
831 ppc64_elf_ha_reloc, /* special_function */
832 "R_PPC64_ADDR16_HIGHESTA", /* name */
833 FALSE, /* partial_inplace */
835 0xffff, /* dst_mask */
836 FALSE), /* pcrel_offset */
838 /* Like ADDR64, but may be unaligned. */
839 HOWTO (R_PPC64_UADDR64, /* type */
841 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
843 FALSE, /* pc_relative */
845 complain_overflow_dont, /* complain_on_overflow */
846 bfd_elf_generic_reloc, /* special_function */
847 "R_PPC64_UADDR64", /* name */
848 FALSE, /* partial_inplace */
850 ONES (64), /* dst_mask */
851 FALSE), /* pcrel_offset */
853 /* 64-bit relative relocation. */
854 HOWTO (R_PPC64_REL64, /* type */
856 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
858 TRUE, /* pc_relative */
860 complain_overflow_dont, /* complain_on_overflow */
861 bfd_elf_generic_reloc, /* special_function */
862 "R_PPC64_REL64", /* name */
863 FALSE, /* partial_inplace */
865 ONES (64), /* dst_mask */
866 TRUE), /* pcrel_offset */
868 /* 64-bit relocation to the symbol's procedure linkage table. */
869 HOWTO (R_PPC64_PLT64, /* type */
871 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
873 FALSE, /* pc_relative */
875 complain_overflow_dont, /* complain_on_overflow */
876 ppc64_elf_unhandled_reloc, /* special_function */
877 "R_PPC64_PLT64", /* name */
878 FALSE, /* partial_inplace */
880 ONES (64), /* dst_mask */
881 FALSE), /* pcrel_offset */
883 /* 64-bit PC relative relocation to the symbol's procedure linkage
885 /* FIXME: R_PPC64_PLTREL64 not supported. */
886 HOWTO (R_PPC64_PLTREL64, /* type */
888 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
890 TRUE, /* pc_relative */
892 complain_overflow_dont, /* complain_on_overflow */
893 ppc64_elf_unhandled_reloc, /* special_function */
894 "R_PPC64_PLTREL64", /* name */
895 FALSE, /* partial_inplace */
897 ONES (64), /* dst_mask */
898 TRUE), /* pcrel_offset */
900 /* 16 bit TOC-relative relocation. */
902 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
903 HOWTO (R_PPC64_TOC16, /* type */
905 1, /* size (0 = byte, 1 = short, 2 = long) */
907 FALSE, /* pc_relative */
909 complain_overflow_signed, /* complain_on_overflow */
910 ppc64_elf_toc_reloc, /* special_function */
911 "R_PPC64_TOC16", /* name */
912 FALSE, /* partial_inplace */
914 0xffff, /* dst_mask */
915 FALSE), /* pcrel_offset */
917 /* 16 bit TOC-relative relocation without overflow. */
919 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
920 HOWTO (R_PPC64_TOC16_LO, /* type */
922 1, /* size (0 = byte, 1 = short, 2 = long) */
924 FALSE, /* pc_relative */
926 complain_overflow_dont, /* complain_on_overflow */
927 ppc64_elf_toc_reloc, /* special_function */
928 "R_PPC64_TOC16_LO", /* name */
929 FALSE, /* partial_inplace */
931 0xffff, /* dst_mask */
932 FALSE), /* pcrel_offset */
934 /* 16 bit TOC-relative relocation, high 16 bits. */
936 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
937 HOWTO (R_PPC64_TOC16_HI, /* type */
939 1, /* size (0 = byte, 1 = short, 2 = long) */
941 FALSE, /* pc_relative */
943 complain_overflow_dont, /* complain_on_overflow */
944 ppc64_elf_toc_reloc, /* special_function */
945 "R_PPC64_TOC16_HI", /* name */
946 FALSE, /* partial_inplace */
948 0xffff, /* dst_mask */
949 FALSE), /* pcrel_offset */
951 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
952 contents of the low 16 bits, treated as a signed number, is
955 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
956 HOWTO (R_PPC64_TOC16_HA, /* type */
958 1, /* size (0 = byte, 1 = short, 2 = long) */
960 FALSE, /* pc_relative */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc64_elf_toc_ha_reloc, /* special_function */
964 "R_PPC64_TOC16_HA", /* name */
965 FALSE, /* partial_inplace */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
970 /* 64-bit relocation; insert value of TOC base (.TOC.). */
972 /* R_PPC64_TOC 51 doubleword64 .TOC. */
973 HOWTO (R_PPC64_TOC, /* type */
975 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
977 FALSE, /* pc_relative */
979 complain_overflow_bitfield, /* complain_on_overflow */
980 ppc64_elf_toc64_reloc, /* special_function */
981 "R_PPC64_TOC", /* name */
982 FALSE, /* partial_inplace */
984 ONES (64), /* dst_mask */
985 FALSE), /* pcrel_offset */
987 /* Like R_PPC64_GOT16, but also informs the link editor that the
988 value to relocate may (!) refer to a PLT entry which the link
989 editor (a) may replace with the symbol value. If the link editor
990 is unable to fully resolve the symbol, it may (b) create a PLT
991 entry and store the address to the new PLT entry in the GOT.
992 This permits lazy resolution of function symbols at run time.
993 The link editor may also skip all of this and just (c) emit a
994 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
995 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
996 HOWTO (R_PPC64_PLTGOT16, /* type */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_signed, /* complain_on_overflow */
1003 ppc64_elf_unhandled_reloc, /* special_function */
1004 "R_PPC64_PLTGOT16", /* name */
1005 FALSE, /* partial_inplace */
1007 0xffff, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like R_PPC64_PLTGOT16, but without overflow. */
1011 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1012 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1014 1, /* size (0 = byte, 1 = short, 2 = long) */
1016 FALSE, /* pc_relative */
1018 complain_overflow_dont, /* complain_on_overflow */
1019 ppc64_elf_unhandled_reloc, /* special_function */
1020 "R_PPC64_PLTGOT16_LO", /* name */
1021 FALSE, /* partial_inplace */
1023 0xffff, /* dst_mask */
1024 FALSE), /* pcrel_offset */
1026 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1027 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1028 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1029 16, /* rightshift */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1032 FALSE, /* pc_relative */
1034 complain_overflow_dont, /* complain_on_overflow */
1035 ppc64_elf_unhandled_reloc, /* special_function */
1036 "R_PPC64_PLTGOT16_HI", /* name */
1037 FALSE, /* partial_inplace */
1039 0xffff, /* dst_mask */
1040 FALSE), /* pcrel_offset */
1042 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1043 1 if the contents of the low 16 bits, treated as a signed number,
1045 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1046 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1047 16, /* rightshift */
1048 1, /* size (0 = byte, 1 = short, 2 = long) */
1050 FALSE, /* pc_relative */
1052 complain_overflow_dont,/* complain_on_overflow */
1053 ppc64_elf_unhandled_reloc, /* special_function */
1054 "R_PPC64_PLTGOT16_HA", /* name */
1055 FALSE, /* partial_inplace */
1057 0xffff, /* dst_mask */
1058 FALSE), /* pcrel_offset */
1060 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1061 HOWTO (R_PPC64_ADDR16_DS, /* type */
1063 1, /* size (0 = byte, 1 = short, 2 = long) */
1065 FALSE, /* pc_relative */
1067 complain_overflow_bitfield, /* complain_on_overflow */
1068 bfd_elf_generic_reloc, /* special_function */
1069 "R_PPC64_ADDR16_DS", /* name */
1070 FALSE, /* partial_inplace */
1072 0xfffc, /* dst_mask */
1073 FALSE), /* pcrel_offset */
1075 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1076 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1078 1, /* size (0 = byte, 1 = short, 2 = long) */
1080 FALSE, /* pc_relative */
1082 complain_overflow_dont,/* complain_on_overflow */
1083 bfd_elf_generic_reloc, /* special_function */
1084 "R_PPC64_ADDR16_LO_DS",/* name */
1085 FALSE, /* partial_inplace */
1087 0xfffc, /* dst_mask */
1088 FALSE), /* pcrel_offset */
1090 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1091 HOWTO (R_PPC64_GOT16_DS, /* type */
1093 1, /* size (0 = byte, 1 = short, 2 = long) */
1095 FALSE, /* pc_relative */
1097 complain_overflow_signed, /* complain_on_overflow */
1098 ppc64_elf_unhandled_reloc, /* special_function */
1099 "R_PPC64_GOT16_DS", /* name */
1100 FALSE, /* partial_inplace */
1102 0xfffc, /* dst_mask */
1103 FALSE), /* pcrel_offset */
1105 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1106 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1108 1, /* size (0 = byte, 1 = short, 2 = long) */
1110 FALSE, /* pc_relative */
1112 complain_overflow_dont, /* complain_on_overflow */
1113 ppc64_elf_unhandled_reloc, /* special_function */
1114 "R_PPC64_GOT16_LO_DS", /* name */
1115 FALSE, /* partial_inplace */
1117 0xfffc, /* dst_mask */
1118 FALSE), /* pcrel_offset */
1120 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1121 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1123 1, /* size (0 = byte, 1 = short, 2 = long) */
1125 FALSE, /* pc_relative */
1127 complain_overflow_dont, /* complain_on_overflow */
1128 ppc64_elf_unhandled_reloc, /* special_function */
1129 "R_PPC64_PLT16_LO_DS", /* name */
1130 FALSE, /* partial_inplace */
1132 0xfffc, /* dst_mask */
1133 FALSE), /* pcrel_offset */
1135 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1136 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1138 1, /* size (0 = byte, 1 = short, 2 = long) */
1140 FALSE, /* pc_relative */
1142 complain_overflow_bitfield, /* complain_on_overflow */
1143 ppc64_elf_sectoff_reloc, /* special_function */
1144 "R_PPC64_SECTOFF_DS", /* name */
1145 FALSE, /* partial_inplace */
1147 0xfffc, /* dst_mask */
1148 FALSE), /* pcrel_offset */
1150 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1151 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1155 FALSE, /* pc_relative */
1157 complain_overflow_dont, /* complain_on_overflow */
1158 ppc64_elf_sectoff_reloc, /* special_function */
1159 "R_PPC64_SECTOFF_LO_DS",/* name */
1160 FALSE, /* partial_inplace */
1162 0xfffc, /* dst_mask */
1163 FALSE), /* pcrel_offset */
1165 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1166 HOWTO (R_PPC64_TOC16_DS, /* type */
1168 1, /* size (0 = byte, 1 = short, 2 = long) */
1170 FALSE, /* pc_relative */
1172 complain_overflow_signed, /* complain_on_overflow */
1173 ppc64_elf_toc_reloc, /* special_function */
1174 "R_PPC64_TOC16_DS", /* name */
1175 FALSE, /* partial_inplace */
1177 0xfffc, /* dst_mask */
1178 FALSE), /* pcrel_offset */
1180 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1181 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1183 1, /* size (0 = byte, 1 = short, 2 = long) */
1185 FALSE, /* pc_relative */
1187 complain_overflow_dont, /* complain_on_overflow */
1188 ppc64_elf_toc_reloc, /* special_function */
1189 "R_PPC64_TOC16_LO_DS", /* name */
1190 FALSE, /* partial_inplace */
1192 0xfffc, /* dst_mask */
1193 FALSE), /* pcrel_offset */
1195 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1196 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1197 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 FALSE, /* pc_relative */
1203 complain_overflow_signed, /* complain_on_overflow */
1204 ppc64_elf_unhandled_reloc, /* special_function */
1205 "R_PPC64_PLTGOT16_DS", /* name */
1206 FALSE, /* partial_inplace */
1208 0xfffc, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1211 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1212 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1213 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1215 1, /* size (0 = byte, 1 = short, 2 = long) */
1217 FALSE, /* pc_relative */
1219 complain_overflow_dont, /* complain_on_overflow */
1220 ppc64_elf_unhandled_reloc, /* special_function */
1221 "R_PPC64_PLTGOT16_LO_DS",/* name */
1222 FALSE, /* partial_inplace */
1224 0xfffc, /* dst_mask */
1225 FALSE), /* pcrel_offset */
1227 /* Marker reloc for TLS. */
1230 2, /* size (0 = byte, 1 = short, 2 = long) */
1232 FALSE, /* pc_relative */
1234 complain_overflow_dont, /* complain_on_overflow */
1235 bfd_elf_generic_reloc, /* special_function */
1236 "R_PPC64_TLS", /* name */
1237 FALSE, /* partial_inplace */
1240 FALSE), /* pcrel_offset */
1242 /* Computes the load module index of the load module that contains the
1243 definition of its TLS sym. */
1244 HOWTO (R_PPC64_DTPMOD64,
1246 4, /* size (0 = byte, 1 = short, 2 = long) */
1248 FALSE, /* pc_relative */
1250 complain_overflow_dont, /* complain_on_overflow */
1251 ppc64_elf_unhandled_reloc, /* special_function */
1252 "R_PPC64_DTPMOD64", /* name */
1253 FALSE, /* partial_inplace */
1255 ONES (64), /* dst_mask */
1256 FALSE), /* pcrel_offset */
1258 /* Computes a dtv-relative displacement, the difference between the value
1259 of sym+add and the base address of the thread-local storage block that
1260 contains the definition of sym, minus 0x8000. */
1261 HOWTO (R_PPC64_DTPREL64,
1263 4, /* size (0 = byte, 1 = short, 2 = long) */
1265 FALSE, /* pc_relative */
1267 complain_overflow_dont, /* complain_on_overflow */
1268 ppc64_elf_unhandled_reloc, /* special_function */
1269 "R_PPC64_DTPREL64", /* name */
1270 FALSE, /* partial_inplace */
1272 ONES (64), /* dst_mask */
1273 FALSE), /* pcrel_offset */
1275 /* A 16 bit dtprel reloc. */
1276 HOWTO (R_PPC64_DTPREL16,
1278 1, /* size (0 = byte, 1 = short, 2 = long) */
1280 FALSE, /* pc_relative */
1282 complain_overflow_signed, /* complain_on_overflow */
1283 ppc64_elf_unhandled_reloc, /* special_function */
1284 "R_PPC64_DTPREL16", /* name */
1285 FALSE, /* partial_inplace */
1287 0xffff, /* dst_mask */
1288 FALSE), /* pcrel_offset */
1290 /* Like DTPREL16, but no overflow. */
1291 HOWTO (R_PPC64_DTPREL16_LO,
1293 1, /* size (0 = byte, 1 = short, 2 = long) */
1295 FALSE, /* pc_relative */
1297 complain_overflow_dont, /* complain_on_overflow */
1298 ppc64_elf_unhandled_reloc, /* special_function */
1299 "R_PPC64_DTPREL16_LO", /* name */
1300 FALSE, /* partial_inplace */
1302 0xffff, /* dst_mask */
1303 FALSE), /* pcrel_offset */
1305 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1306 HOWTO (R_PPC64_DTPREL16_HI,
1307 16, /* rightshift */
1308 1, /* size (0 = byte, 1 = short, 2 = long) */
1310 FALSE, /* pc_relative */
1312 complain_overflow_dont, /* complain_on_overflow */
1313 ppc64_elf_unhandled_reloc, /* special_function */
1314 "R_PPC64_DTPREL16_HI", /* name */
1315 FALSE, /* partial_inplace */
1317 0xffff, /* dst_mask */
1318 FALSE), /* pcrel_offset */
1320 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1321 HOWTO (R_PPC64_DTPREL16_HA,
1322 16, /* rightshift */
1323 1, /* size (0 = byte, 1 = short, 2 = long) */
1325 FALSE, /* pc_relative */
1327 complain_overflow_dont, /* complain_on_overflow */
1328 ppc64_elf_unhandled_reloc, /* special_function */
1329 "R_PPC64_DTPREL16_HA", /* name */
1330 FALSE, /* partial_inplace */
1332 0xffff, /* dst_mask */
1333 FALSE), /* pcrel_offset */
1335 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1336 HOWTO (R_PPC64_DTPREL16_HIGHER,
1337 32, /* rightshift */
1338 1, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE, /* pc_relative */
1342 complain_overflow_dont, /* complain_on_overflow */
1343 ppc64_elf_unhandled_reloc, /* special_function */
1344 "R_PPC64_DTPREL16_HIGHER", /* name */
1345 FALSE, /* partial_inplace */
1347 0xffff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1350 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1351 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1352 32, /* rightshift */
1353 1, /* size (0 = byte, 1 = short, 2 = long) */
1355 FALSE, /* pc_relative */
1357 complain_overflow_dont, /* complain_on_overflow */
1358 ppc64_elf_unhandled_reloc, /* special_function */
1359 "R_PPC64_DTPREL16_HIGHERA", /* name */
1360 FALSE, /* partial_inplace */
1362 0xffff, /* dst_mask */
1363 FALSE), /* pcrel_offset */
1365 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1366 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1367 48, /* rightshift */
1368 1, /* size (0 = byte, 1 = short, 2 = long) */
1370 FALSE, /* pc_relative */
1372 complain_overflow_dont, /* complain_on_overflow */
1373 ppc64_elf_unhandled_reloc, /* special_function */
1374 "R_PPC64_DTPREL16_HIGHEST", /* name */
1375 FALSE, /* partial_inplace */
1377 0xffff, /* dst_mask */
1378 FALSE), /* pcrel_offset */
1380 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1381 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1382 48, /* rightshift */
1383 1, /* size (0 = byte, 1 = short, 2 = long) */
1385 FALSE, /* pc_relative */
1387 complain_overflow_dont, /* complain_on_overflow */
1388 ppc64_elf_unhandled_reloc, /* special_function */
1389 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1390 FALSE, /* partial_inplace */
1392 0xffff, /* dst_mask */
1393 FALSE), /* pcrel_offset */
1395 /* Like DTPREL16, but for insns with a DS field. */
1396 HOWTO (R_PPC64_DTPREL16_DS,
1398 1, /* size (0 = byte, 1 = short, 2 = long) */
1400 FALSE, /* pc_relative */
1402 complain_overflow_signed, /* complain_on_overflow */
1403 ppc64_elf_unhandled_reloc, /* special_function */
1404 "R_PPC64_DTPREL16_DS", /* name */
1405 FALSE, /* partial_inplace */
1407 0xfffc, /* dst_mask */
1408 FALSE), /* pcrel_offset */
1410 /* Like DTPREL16_DS, but no overflow. */
1411 HOWTO (R_PPC64_DTPREL16_LO_DS,
1413 1, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE, /* pc_relative */
1417 complain_overflow_dont, /* complain_on_overflow */
1418 ppc64_elf_unhandled_reloc, /* special_function */
1419 "R_PPC64_DTPREL16_LO_DS", /* name */
1420 FALSE, /* partial_inplace */
1422 0xfffc, /* dst_mask */
1423 FALSE), /* pcrel_offset */
1425 /* Computes a tp-relative displacement, the difference between the value of
1426 sym+add and the value of the thread pointer (r13). */
1427 HOWTO (R_PPC64_TPREL64,
1429 4, /* size (0 = byte, 1 = short, 2 = long) */
1431 FALSE, /* pc_relative */
1433 complain_overflow_dont, /* complain_on_overflow */
1434 ppc64_elf_unhandled_reloc, /* special_function */
1435 "R_PPC64_TPREL64", /* name */
1436 FALSE, /* partial_inplace */
1438 ONES (64), /* dst_mask */
1439 FALSE), /* pcrel_offset */
1441 /* A 16 bit tprel reloc. */
1442 HOWTO (R_PPC64_TPREL16,
1444 1, /* size (0 = byte, 1 = short, 2 = long) */
1446 FALSE, /* pc_relative */
1448 complain_overflow_signed, /* complain_on_overflow */
1449 ppc64_elf_unhandled_reloc, /* special_function */
1450 "R_PPC64_TPREL16", /* name */
1451 FALSE, /* partial_inplace */
1453 0xffff, /* dst_mask */
1454 FALSE), /* pcrel_offset */
1456 /* Like TPREL16, but no overflow. */
1457 HOWTO (R_PPC64_TPREL16_LO,
1459 1, /* size (0 = byte, 1 = short, 2 = long) */
1461 FALSE, /* pc_relative */
1463 complain_overflow_dont, /* complain_on_overflow */
1464 ppc64_elf_unhandled_reloc, /* special_function */
1465 "R_PPC64_TPREL16_LO", /* name */
1466 FALSE, /* partial_inplace */
1468 0xffff, /* dst_mask */
1469 FALSE), /* pcrel_offset */
1471 /* Like TPREL16_LO, but next higher group of 16 bits. */
1472 HOWTO (R_PPC64_TPREL16_HI,
1473 16, /* rightshift */
1474 1, /* size (0 = byte, 1 = short, 2 = long) */
1476 FALSE, /* pc_relative */
1478 complain_overflow_dont, /* complain_on_overflow */
1479 ppc64_elf_unhandled_reloc, /* special_function */
1480 "R_PPC64_TPREL16_HI", /* name */
1481 FALSE, /* partial_inplace */
1483 0xffff, /* dst_mask */
1484 FALSE), /* pcrel_offset */
1486 /* Like TPREL16_HI, but adjust for low 16 bits. */
1487 HOWTO (R_PPC64_TPREL16_HA,
1488 16, /* rightshift */
1489 1, /* size (0 = byte, 1 = short, 2 = long) */
1491 FALSE, /* pc_relative */
1493 complain_overflow_dont, /* complain_on_overflow */
1494 ppc64_elf_unhandled_reloc, /* special_function */
1495 "R_PPC64_TPREL16_HA", /* name */
1496 FALSE, /* partial_inplace */
1498 0xffff, /* dst_mask */
1499 FALSE), /* pcrel_offset */
1501 /* Like TPREL16_HI, but next higher group of 16 bits. */
1502 HOWTO (R_PPC64_TPREL16_HIGHER,
1503 32, /* rightshift */
1504 1, /* size (0 = byte, 1 = short, 2 = long) */
1506 FALSE, /* pc_relative */
1508 complain_overflow_dont, /* complain_on_overflow */
1509 ppc64_elf_unhandled_reloc, /* special_function */
1510 "R_PPC64_TPREL16_HIGHER", /* name */
1511 FALSE, /* partial_inplace */
1513 0xffff, /* dst_mask */
1514 FALSE), /* pcrel_offset */
1516 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1517 HOWTO (R_PPC64_TPREL16_HIGHERA,
1518 32, /* rightshift */
1519 1, /* size (0 = byte, 1 = short, 2 = long) */
1521 FALSE, /* pc_relative */
1523 complain_overflow_dont, /* complain_on_overflow */
1524 ppc64_elf_unhandled_reloc, /* special_function */
1525 "R_PPC64_TPREL16_HIGHERA", /* name */
1526 FALSE, /* partial_inplace */
1528 0xffff, /* dst_mask */
1529 FALSE), /* pcrel_offset */
1531 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1532 HOWTO (R_PPC64_TPREL16_HIGHEST,
1533 48, /* rightshift */
1534 1, /* size (0 = byte, 1 = short, 2 = long) */
1536 FALSE, /* pc_relative */
1538 complain_overflow_dont, /* complain_on_overflow */
1539 ppc64_elf_unhandled_reloc, /* special_function */
1540 "R_PPC64_TPREL16_HIGHEST", /* name */
1541 FALSE, /* partial_inplace */
1543 0xffff, /* dst_mask */
1544 FALSE), /* pcrel_offset */
1546 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1547 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1548 48, /* rightshift */
1549 1, /* size (0 = byte, 1 = short, 2 = long) */
1551 FALSE, /* pc_relative */
1553 complain_overflow_dont, /* complain_on_overflow */
1554 ppc64_elf_unhandled_reloc, /* special_function */
1555 "R_PPC64_TPREL16_HIGHESTA", /* name */
1556 FALSE, /* partial_inplace */
1558 0xffff, /* dst_mask */
1559 FALSE), /* pcrel_offset */
1561 /* Like TPREL16, but for insns with a DS field. */
1562 HOWTO (R_PPC64_TPREL16_DS,
1564 1, /* size (0 = byte, 1 = short, 2 = long) */
1566 FALSE, /* pc_relative */
1568 complain_overflow_signed, /* complain_on_overflow */
1569 ppc64_elf_unhandled_reloc, /* special_function */
1570 "R_PPC64_TPREL16_DS", /* name */
1571 FALSE, /* partial_inplace */
1573 0xfffc, /* dst_mask */
1574 FALSE), /* pcrel_offset */
1576 /* Like TPREL16_DS, but no overflow. */
1577 HOWTO (R_PPC64_TPREL16_LO_DS,
1579 1, /* size (0 = byte, 1 = short, 2 = long) */
1581 FALSE, /* pc_relative */
1583 complain_overflow_dont, /* complain_on_overflow */
1584 ppc64_elf_unhandled_reloc, /* special_function */
1585 "R_PPC64_TPREL16_LO_DS", /* name */
1586 FALSE, /* partial_inplace */
1588 0xfffc, /* dst_mask */
1589 FALSE), /* pcrel_offset */
1591 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1592 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1593 to the first entry relative to the TOC base (r2). */
1594 HOWTO (R_PPC64_GOT_TLSGD16,
1596 1, /* size (0 = byte, 1 = short, 2 = long) */
1598 FALSE, /* pc_relative */
1600 complain_overflow_signed, /* complain_on_overflow */
1601 ppc64_elf_unhandled_reloc, /* special_function */
1602 "R_PPC64_GOT_TLSGD16", /* name */
1603 FALSE, /* partial_inplace */
1605 0xffff, /* dst_mask */
1606 FALSE), /* pcrel_offset */
1608 /* Like GOT_TLSGD16, but no overflow. */
1609 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1611 1, /* size (0 = byte, 1 = short, 2 = long) */
1613 FALSE, /* pc_relative */
1615 complain_overflow_dont, /* complain_on_overflow */
1616 ppc64_elf_unhandled_reloc, /* special_function */
1617 "R_PPC64_GOT_TLSGD16_LO", /* name */
1618 FALSE, /* partial_inplace */
1620 0xffff, /* dst_mask */
1621 FALSE), /* pcrel_offset */
1623 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1624 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1625 16, /* rightshift */
1626 1, /* size (0 = byte, 1 = short, 2 = long) */
1628 FALSE, /* pc_relative */
1630 complain_overflow_dont, /* complain_on_overflow */
1631 ppc64_elf_unhandled_reloc, /* special_function */
1632 "R_PPC64_GOT_TLSGD16_HI", /* name */
1633 FALSE, /* partial_inplace */
1635 0xffff, /* dst_mask */
1636 FALSE), /* pcrel_offset */
1638 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1639 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1640 16, /* rightshift */
1641 1, /* size (0 = byte, 1 = short, 2 = long) */
1643 FALSE, /* pc_relative */
1645 complain_overflow_dont, /* complain_on_overflow */
1646 ppc64_elf_unhandled_reloc, /* special_function */
1647 "R_PPC64_GOT_TLSGD16_HA", /* name */
1648 FALSE, /* partial_inplace */
1650 0xffff, /* dst_mask */
1651 FALSE), /* pcrel_offset */
1653 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1654 with values (sym+add)@dtpmod and zero, and computes the offset to the
1655 first entry relative to the TOC base (r2). */
1656 HOWTO (R_PPC64_GOT_TLSLD16,
1658 1, /* size (0 = byte, 1 = short, 2 = long) */
1660 FALSE, /* pc_relative */
1662 complain_overflow_signed, /* complain_on_overflow */
1663 ppc64_elf_unhandled_reloc, /* special_function */
1664 "R_PPC64_GOT_TLSLD16", /* name */
1665 FALSE, /* partial_inplace */
1667 0xffff, /* dst_mask */
1668 FALSE), /* pcrel_offset */
1670 /* Like GOT_TLSLD16, but no overflow. */
1671 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1673 1, /* size (0 = byte, 1 = short, 2 = long) */
1675 FALSE, /* pc_relative */
1677 complain_overflow_dont, /* complain_on_overflow */
1678 ppc64_elf_unhandled_reloc, /* special_function */
1679 "R_PPC64_GOT_TLSLD16_LO", /* name */
1680 FALSE, /* partial_inplace */
1682 0xffff, /* dst_mask */
1683 FALSE), /* pcrel_offset */
1685 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1686 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1687 16, /* rightshift */
1688 1, /* size (0 = byte, 1 = short, 2 = long) */
1690 FALSE, /* pc_relative */
1692 complain_overflow_dont, /* complain_on_overflow */
1693 ppc64_elf_unhandled_reloc, /* special_function */
1694 "R_PPC64_GOT_TLSLD16_HI", /* name */
1695 FALSE, /* partial_inplace */
1697 0xffff, /* dst_mask */
1698 FALSE), /* pcrel_offset */
1700 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1701 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1702 16, /* rightshift */
1703 1, /* size (0 = byte, 1 = short, 2 = long) */
1705 FALSE, /* pc_relative */
1707 complain_overflow_dont, /* complain_on_overflow */
1708 ppc64_elf_unhandled_reloc, /* special_function */
1709 "R_PPC64_GOT_TLSLD16_HA", /* name */
1710 FALSE, /* partial_inplace */
1712 0xffff, /* dst_mask */
1713 FALSE), /* pcrel_offset */
1715 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1716 the offset to the entry relative to the TOC base (r2). */
1717 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE, /* pc_relative */
1723 complain_overflow_signed, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc, /* special_function */
1725 "R_PPC64_GOT_DTPREL16_DS", /* name */
1726 FALSE, /* partial_inplace */
1728 0xfffc, /* dst_mask */
1729 FALSE), /* pcrel_offset */
1731 /* Like GOT_DTPREL16_DS, but no overflow. */
1732 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1736 FALSE, /* pc_relative */
1738 complain_overflow_dont, /* complain_on_overflow */
1739 ppc64_elf_unhandled_reloc, /* special_function */
1740 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1741 FALSE, /* partial_inplace */
1743 0xfffc, /* dst_mask */
1744 FALSE), /* pcrel_offset */
1746 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1747 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1748 16, /* rightshift */
1749 1, /* size (0 = byte, 1 = short, 2 = long) */
1751 FALSE, /* pc_relative */
1753 complain_overflow_dont, /* complain_on_overflow */
1754 ppc64_elf_unhandled_reloc, /* special_function */
1755 "R_PPC64_GOT_DTPREL16_HI", /* name */
1756 FALSE, /* partial_inplace */
1758 0xffff, /* dst_mask */
1759 FALSE), /* pcrel_offset */
1761 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1762 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1763 16, /* rightshift */
1764 1, /* size (0 = byte, 1 = short, 2 = long) */
1766 FALSE, /* pc_relative */
1768 complain_overflow_dont, /* complain_on_overflow */
1769 ppc64_elf_unhandled_reloc, /* special_function */
1770 "R_PPC64_GOT_DTPREL16_HA", /* name */
1771 FALSE, /* partial_inplace */
1773 0xffff, /* dst_mask */
1774 FALSE), /* pcrel_offset */
1776 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1777 offset to the entry relative to the TOC base (r2). */
1778 HOWTO (R_PPC64_GOT_TPREL16_DS,
1780 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 FALSE, /* pc_relative */
1784 complain_overflow_signed, /* complain_on_overflow */
1785 ppc64_elf_unhandled_reloc, /* special_function */
1786 "R_PPC64_GOT_TPREL16_DS", /* name */
1787 FALSE, /* partial_inplace */
1789 0xfffc, /* dst_mask */
1790 FALSE), /* pcrel_offset */
1792 /* Like GOT_TPREL16_DS, but no overflow. */
1793 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1795 1, /* size (0 = byte, 1 = short, 2 = long) */
1797 FALSE, /* pc_relative */
1799 complain_overflow_dont, /* complain_on_overflow */
1800 ppc64_elf_unhandled_reloc, /* special_function */
1801 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1802 FALSE, /* partial_inplace */
1804 0xfffc, /* dst_mask */
1805 FALSE), /* pcrel_offset */
1807 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1808 HOWTO (R_PPC64_GOT_TPREL16_HI,
1809 16, /* rightshift */
1810 1, /* size (0 = byte, 1 = short, 2 = long) */
1812 FALSE, /* pc_relative */
1814 complain_overflow_dont, /* complain_on_overflow */
1815 ppc64_elf_unhandled_reloc, /* special_function */
1816 "R_PPC64_GOT_TPREL16_HI", /* name */
1817 FALSE, /* partial_inplace */
1819 0xffff, /* dst_mask */
1820 FALSE), /* pcrel_offset */
1822 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1823 HOWTO (R_PPC64_GOT_TPREL16_HA,
1824 16, /* rightshift */
1825 1, /* size (0 = byte, 1 = short, 2 = long) */
1827 FALSE, /* pc_relative */
1829 complain_overflow_dont, /* complain_on_overflow */
1830 ppc64_elf_unhandled_reloc, /* special_function */
1831 "R_PPC64_GOT_TPREL16_HA", /* name */
1832 FALSE, /* partial_inplace */
1834 0xffff, /* dst_mask */
1835 FALSE), /* pcrel_offset */
1837 /* GNU extension to record C++ vtable hierarchy. */
1838 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1840 0, /* size (0 = byte, 1 = short, 2 = long) */
1842 FALSE, /* pc_relative */
1844 complain_overflow_dont, /* complain_on_overflow */
1845 NULL, /* special_function */
1846 "R_PPC64_GNU_VTINHERIT", /* name */
1847 FALSE, /* partial_inplace */
1850 FALSE), /* pcrel_offset */
1852 /* GNU extension to record C++ vtable member usage. */
1853 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1855 0, /* size (0 = byte, 1 = short, 2 = long) */
1857 FALSE, /* pc_relative */
1859 complain_overflow_dont, /* complain_on_overflow */
1860 NULL, /* special_function */
1861 "R_PPC64_GNU_VTENTRY", /* name */
1862 FALSE, /* partial_inplace */
1865 FALSE), /* pcrel_offset */
1869 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1873 ppc_howto_init (void)
1875 unsigned int i, type;
1878 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1881 type = ppc64_elf_howto_raw[i].type;
1882 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1883 / sizeof (ppc64_elf_howto_table[0])));
1884 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1888 static reloc_howto_type *
1889 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1890 bfd_reloc_code_real_type code)
1892 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1894 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1895 /* Initialize howto table if needed. */
1903 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1905 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1907 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1909 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1911 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1913 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1915 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1917 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1919 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1921 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1923 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1925 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1927 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1929 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1931 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1933 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1935 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1937 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1939 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1941 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1943 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1945 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1947 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1949 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1951 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1953 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1955 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1957 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1959 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1961 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1963 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1965 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1967 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1969 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1971 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1973 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1975 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1977 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1979 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1981 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1983 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1985 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1987 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1989 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1991 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1993 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1995 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1997 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1999 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2001 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2003 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2005 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2007 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2009 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2011 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2013 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2015 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2017 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2019 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2021 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2023 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2025 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2027 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2029 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2031 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2033 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2035 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2037 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2039 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2041 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2043 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2045 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2047 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2049 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2051 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2053 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2055 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2057 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2059 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2061 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2063 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2065 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2067 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2069 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2071 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2073 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2075 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2077 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2079 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2081 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2083 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2085 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2087 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2089 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2091 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2093 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2095 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2097 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2099 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2101 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2103 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2107 return ppc64_elf_howto_table[r];
2110 /* Set the howto pointer for a PowerPC ELF reloc. */
2113 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2114 Elf_Internal_Rela *dst)
2118 /* Initialize howto table if needed. */
2119 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2122 type = ELF64_R_TYPE (dst->r_info);
2123 if (type >= (sizeof (ppc64_elf_howto_table)
2124 / sizeof (ppc64_elf_howto_table[0])))
2126 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2128 type = R_PPC64_NONE;
2130 cache_ptr->howto = ppc64_elf_howto_table[type];
2133 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2135 static bfd_reloc_status_type
2136 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2137 void *data, asection *input_section,
2138 bfd *output_bfd, char **error_message)
2140 /* If this is a relocatable link (output_bfd test tells us), just
2141 call the generic function. Any adjustment will be done at final
2143 if (output_bfd != NULL)
2144 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2145 input_section, output_bfd, error_message);
2147 /* Adjust the addend for sign extension of the low 16 bits.
2148 We won't actually be using the low 16 bits, so trashing them
2150 reloc_entry->addend += 0x8000;
2151 return bfd_reloc_continue;
2154 static bfd_reloc_status_type
2155 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2156 void *data, asection *input_section,
2157 bfd *output_bfd, char **error_message)
2159 if (output_bfd != NULL)
2160 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2161 input_section, output_bfd, error_message);
2163 if (strcmp (symbol->section->name, ".opd") == 0
2164 && (symbol->section->owner->flags & DYNAMIC) == 0)
2166 bfd_vma dest = opd_entry_value (symbol->section,
2167 symbol->value + reloc_entry->addend,
2169 if (dest != (bfd_vma) -1)
2170 reloc_entry->addend = dest - (symbol->value
2171 + symbol->section->output_section->vma
2172 + symbol->section->output_offset);
2174 return bfd_reloc_continue;
2177 static bfd_reloc_status_type
2178 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2179 void *data, asection *input_section,
2180 bfd *output_bfd, char **error_message)
2183 enum elf_ppc64_reloc_type r_type;
2184 bfd_size_type octets;
2185 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2186 bfd_boolean is_power4 = FALSE;
2188 /* If this is a relocatable link (output_bfd test tells us), just
2189 call the generic function. Any adjustment will be done at final
2191 if (output_bfd != NULL)
2192 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2193 input_section, output_bfd, error_message);
2195 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2196 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2197 insn &= ~(0x01 << 21);
2198 r_type = reloc_entry->howto->type;
2199 if (r_type == R_PPC64_ADDR14_BRTAKEN
2200 || r_type == R_PPC64_REL14_BRTAKEN)
2201 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2205 /* Set 'a' bit. This is 0b00010 in BO field for branch
2206 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2207 for branch on CTR insns (BO == 1a00t or 1a01t). */
2208 if ((insn & (0x14 << 21)) == (0x04 << 21))
2210 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2220 if (!bfd_is_com_section (symbol->section))
2221 target = symbol->value;
2222 target += symbol->section->output_section->vma;
2223 target += symbol->section->output_offset;
2224 target += reloc_entry->addend;
2226 from = (reloc_entry->address
2227 + input_section->output_offset
2228 + input_section->output_section->vma);
2230 /* Invert 'y' bit if not the default. */
2231 if ((bfd_signed_vma) (target - from) < 0)
2234 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2236 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2237 input_section, output_bfd, error_message);
2240 static bfd_reloc_status_type
2241 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2242 void *data, asection *input_section,
2243 bfd *output_bfd, char **error_message)
2245 /* If this is a relocatable link (output_bfd test tells us), just
2246 call the generic function. Any adjustment will be done at final
2248 if (output_bfd != NULL)
2249 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2250 input_section, output_bfd, error_message);
2252 /* Subtract the symbol section base address. */
2253 reloc_entry->addend -= symbol->section->output_section->vma;
2254 return bfd_reloc_continue;
2257 static bfd_reloc_status_type
2258 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2259 void *data, asection *input_section,
2260 bfd *output_bfd, char **error_message)
2262 /* If this is a relocatable link (output_bfd test tells us), just
2263 call the generic function. Any adjustment will be done at final
2265 if (output_bfd != NULL)
2266 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2267 input_section, output_bfd, error_message);
2269 /* Subtract the symbol section base address. */
2270 reloc_entry->addend -= symbol->section->output_section->vma;
2272 /* Adjust the addend for sign extension of the low 16 bits. */
2273 reloc_entry->addend += 0x8000;
2274 return bfd_reloc_continue;
2277 static bfd_reloc_status_type
2278 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2279 void *data, asection *input_section,
2280 bfd *output_bfd, char **error_message)
2284 /* If this is a relocatable link (output_bfd test tells us), just
2285 call the generic function. Any adjustment will be done at final
2287 if (output_bfd != NULL)
2288 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2289 input_section, output_bfd, error_message);
2291 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2293 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2295 /* Subtract the TOC base address. */
2296 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2297 return bfd_reloc_continue;
2300 static bfd_reloc_status_type
2301 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2302 void *data, asection *input_section,
2303 bfd *output_bfd, char **error_message)
2307 /* If this is a relocatable link (output_bfd test tells us), just
2308 call the generic function. Any adjustment will be done at final
2310 if (output_bfd != NULL)
2311 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2312 input_section, output_bfd, error_message);
2314 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2316 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2318 /* Subtract the TOC base address. */
2319 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2321 /* Adjust the addend for sign extension of the low 16 bits. */
2322 reloc_entry->addend += 0x8000;
2323 return bfd_reloc_continue;
2326 static bfd_reloc_status_type
2327 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2328 void *data, asection *input_section,
2329 bfd *output_bfd, char **error_message)
2332 bfd_size_type octets;
2334 /* If this is a relocatable link (output_bfd test tells us), just
2335 call the generic function. Any adjustment will be done at final
2337 if (output_bfd != NULL)
2338 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2339 input_section, output_bfd, error_message);
2341 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2343 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2345 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2346 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2347 return bfd_reloc_ok;
2350 static bfd_reloc_status_type
2351 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2352 void *data, asection *input_section,
2353 bfd *output_bfd, char **error_message)
2355 /* If this is a relocatable link (output_bfd test tells us), just
2356 call the generic function. Any adjustment will be done at final
2358 if (output_bfd != NULL)
2359 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2360 input_section, output_bfd, error_message);
2362 if (error_message != NULL)
2364 static char buf[60];
2365 sprintf (buf, "generic linker can't handle %s",
2366 reloc_entry->howto->name);
2367 *error_message = buf;
2369 return bfd_reloc_dangerous;
2372 struct ppc64_elf_obj_tdata
2374 struct elf_obj_tdata elf;
2376 /* Shortcuts to dynamic linker sections. */
2380 /* Used during garbage collection. We attach global symbols defined
2381 on removed .opd entries to this section so that the sym is removed. */
2382 asection *deleted_section;
2384 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2385 sections means we potentially need one of these for each input bfd. */
2387 bfd_signed_vma refcount;
2391 /* A copy of relocs before they are modified for --emit-relocs. */
2392 Elf_Internal_Rela *opd_relocs;
2395 #define ppc64_elf_tdata(bfd) \
2396 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2398 #define ppc64_tlsld_got(bfd) \
2399 (&ppc64_elf_tdata (bfd)->tlsld_got)
2401 /* Override the generic function because we store some extras. */
2404 ppc64_elf_mkobject (bfd *abfd)
2406 if (abfd->tdata.any == NULL)
2408 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2409 abfd->tdata.any = bfd_zalloc (abfd, amt);
2410 if (abfd->tdata.any == NULL)
2413 return bfd_elf_mkobject (abfd);
2416 /* Return 1 if target is one of ours. */
2419 is_ppc64_elf_target (const struct bfd_target *targ)
2421 extern const bfd_target bfd_elf64_powerpc_vec;
2422 extern const bfd_target bfd_elf64_powerpcle_vec;
2424 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2427 /* Fix bad default arch selected for a 64 bit input bfd when the
2428 default is 32 bit. */
2431 ppc64_elf_object_p (bfd *abfd)
2433 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2435 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2437 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2439 /* Relies on arch after 32 bit default being 64 bit default. */
2440 abfd->arch_info = abfd->arch_info->next;
2441 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2447 /* Support for core dump NOTE sections. */
2450 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2452 size_t offset, size;
2454 if (note->descsz != 504)
2458 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2461 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2467 /* Make a ".reg/999" section. */
2468 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2469 size, note->descpos + offset);
2473 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2475 if (note->descsz != 136)
2478 elf_tdata (abfd)->core_program
2479 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2480 elf_tdata (abfd)->core_command
2481 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2486 /* Merge backend specific data from an object file to the output
2487 object file when linking. */
2490 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2492 /* Check if we have the same endianess. */
2493 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2494 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2495 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2499 if (bfd_big_endian (ibfd))
2500 msg = _("%B: compiled for a big endian system "
2501 "and target is little endian");
2503 msg = _("%B: compiled for a little endian system "
2504 "and target is big endian");
2506 (*_bfd_error_handler) (msg, ibfd);
2508 bfd_set_error (bfd_error_wrong_format);
2515 /* Add extra PPC sections. */
2517 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2519 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2520 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2521 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2522 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2523 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2524 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2525 { NULL, 0, 0, 0, 0 }
2528 struct _ppc64_elf_section_data
2530 struct bfd_elf_section_data elf;
2532 /* An array with one entry for each opd function descriptor. */
2535 /* Points to the function code section for local opd entries. */
2536 asection **func_sec;
2537 /* After editing .opd, adjust references to opd local syms. */
2541 /* An array for toc sections, indexed by offset/8.
2542 Specifies the relocation symbol index used at a given toc offset. */
2546 #define ppc64_elf_section_data(sec) \
2547 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2550 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2552 if (!sec->used_by_bfd)
2554 struct _ppc64_elf_section_data *sdata;
2555 bfd_size_type amt = sizeof (*sdata);
2557 sdata = bfd_zalloc (abfd, amt);
2560 sec->used_by_bfd = sdata;
2563 return _bfd_elf_new_section_hook (abfd, sec);
2567 get_opd_info (asection * sec)
2570 && ppc64_elf_section_data (sec) != NULL
2571 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2572 return ppc64_elf_section_data (sec)->opd.adjust;
2576 /* Parameters for the qsort hook. */
2577 static asection *synthetic_opd;
2578 static bfd_boolean synthetic_relocatable;
2580 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2583 compare_symbols (const void *ap, const void *bp)
2585 const asymbol *a = * (const asymbol **) ap;
2586 const asymbol *b = * (const asymbol **) bp;
2588 /* Section symbols first. */
2589 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2591 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2594 /* then .opd symbols. */
2595 if (a->section == synthetic_opd && b->section != synthetic_opd)
2597 if (a->section != synthetic_opd && b->section == synthetic_opd)
2600 /* then other code symbols. */
2601 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2602 == (SEC_CODE | SEC_ALLOC)
2603 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2604 != (SEC_CODE | SEC_ALLOC))
2607 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2608 != (SEC_CODE | SEC_ALLOC)
2609 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2610 == (SEC_CODE | SEC_ALLOC))
2613 if (synthetic_relocatable)
2615 if (a->section->id < b->section->id)
2618 if (a->section->id > b->section->id)
2622 if (a->value + a->section->vma < b->value + b->section->vma)
2625 if (a->value + a->section->vma > b->value + b->section->vma)
2628 /* For syms with the same value, prefer strong dynamic global function
2629 syms over other syms. */
2630 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2633 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2636 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2639 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2642 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2645 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2648 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2651 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2657 /* Search SYMS for a symbol of the given VALUE. */
2660 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2668 mid = (lo + hi) >> 1;
2669 if (syms[mid]->value + syms[mid]->section->vma < value)
2671 else if (syms[mid]->value + syms[mid]->section->vma > value)
2681 mid = (lo + hi) >> 1;
2682 if (syms[mid]->section->id < id)
2684 else if (syms[mid]->section->id > id)
2686 else if (syms[mid]->value < value)
2688 else if (syms[mid]->value > value)
2697 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2701 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2702 long static_count, asymbol **static_syms,
2703 long dyn_count, asymbol **dyn_syms,
2710 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2712 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2717 opd = bfd_get_section_by_name (abfd, ".opd");
2721 symcount = static_count;
2723 symcount += dyn_count;
2727 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2731 if (!relocatable && static_count != 0 && dyn_count != 0)
2733 /* Use both symbol tables. */
2734 memcpy (syms, static_syms, static_count * sizeof (*syms));
2735 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2737 else if (!relocatable && static_count == 0)
2738 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2740 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2742 synthetic_opd = opd;
2743 synthetic_relocatable = relocatable;
2744 qsort (syms, symcount, sizeof (*syms), compare_symbols);
2746 if (!relocatable && symcount > 1)
2749 /* Trim duplicate syms, since we may have merged the normal and
2750 dynamic symbols. Actually, we only care about syms that have
2751 different values, so trim any with the same value. */
2752 for (i = 1, j = 1; i < symcount; ++i)
2753 if (syms[i - 1]->value + syms[i - 1]->section->vma
2754 != syms[i]->value + syms[i]->section->vma)
2755 syms[j++] = syms[i];
2760 if (syms[i]->section == opd)
2764 for (; i < symcount; ++i)
2765 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2766 != (SEC_CODE | SEC_ALLOC))
2767 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2771 for (; i < symcount; ++i)
2772 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2776 for (; i < symcount; ++i)
2777 if (syms[i]->section != opd)
2781 for (; i < symcount; ++i)
2782 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2783 != (SEC_CODE | SEC_ALLOC))
2788 if (opdsymend == secsymend)
2793 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2798 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2799 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2803 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2810 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2814 while (r < opd->relocation + relcount
2815 && r->address < syms[i]->value + opd->vma)
2818 if (r == opd->relocation + relcount)
2821 if (r->address != syms[i]->value + opd->vma)
2824 if (r->howto->type != R_PPC64_ADDR64)
2827 sym = *r->sym_ptr_ptr;
2828 if (!sym_exists_at (syms, opdsymend, symcount,
2829 sym->section->id, sym->value + r->addend))
2832 size += sizeof (asymbol);
2833 size += strlen (syms[i]->name) + 2;
2837 s = *ret = bfd_malloc (size);
2844 names = (char *) (s + count);
2846 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2850 while (r < opd->relocation + relcount
2851 && r->address < syms[i]->value + opd->vma)
2854 if (r == opd->relocation + relcount)
2857 if (r->address != syms[i]->value + opd->vma)
2860 if (r->howto->type != R_PPC64_ADDR64)
2863 sym = *r->sym_ptr_ptr;
2864 if (!sym_exists_at (syms, opdsymend, symcount,
2865 sym->section->id, sym->value + r->addend))
2870 s->section = sym->section;
2871 s->value = sym->value + r->addend;
2874 len = strlen (syms[i]->name);
2875 memcpy (names, syms[i]->name, len + 1);
2886 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2890 free_contents_and_exit:
2898 for (i = secsymend; i < opdsymend; ++i)
2902 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2903 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2906 size += sizeof (asymbol);
2907 size += strlen (syms[i]->name) + 2;
2911 s = *ret = bfd_malloc (size);
2913 goto free_contents_and_exit;
2915 names = (char *) (s + count);
2917 for (i = secsymend; i < opdsymend; ++i)
2921 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2922 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2926 asection *sec = abfd->sections;
2933 long mid = (lo + hi) >> 1;
2934 if (syms[mid]->section->vma < ent)
2936 else if (syms[mid]->section->vma > ent)
2940 sec = syms[mid]->section;
2945 if (lo >= hi && lo > codesecsym)
2946 sec = syms[lo - 1]->section;
2948 for (; sec != NULL; sec = sec->next)
2952 if ((sec->flags & SEC_ALLOC) == 0
2953 || (sec->flags & SEC_LOAD) == 0)
2955 if ((sec->flags & SEC_CODE) != 0)
2958 s->value = ent - s->section->vma;
2961 len = strlen (syms[i]->name);
2962 memcpy (names, syms[i]->name, len + 1);
2975 /* The following functions are specific to the ELF linker, while
2976 functions above are used generally. Those named ppc64_elf_* are
2977 called by the main ELF linker code. They appear in this file more
2978 or less in the order in which they are called. eg.
2979 ppc64_elf_check_relocs is called early in the link process,
2980 ppc64_elf_finish_dynamic_sections is one of the last functions
2983 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2984 functions have both a function code symbol and a function descriptor
2985 symbol. A call to foo in a relocatable object file looks like:
2992 The function definition in another object file might be:
2996 . .quad .TOC.@tocbase
3002 When the linker resolves the call during a static link, the branch
3003 unsurprisingly just goes to .foo and the .opd information is unused.
3004 If the function definition is in a shared library, things are a little
3005 different: The call goes via a plt call stub, the opd information gets
3006 copied to the plt, and the linker patches the nop.
3014 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3015 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3016 . std 2,40(1) # this is the general idea
3024 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3026 The "reloc ()" notation is supposed to indicate that the linker emits
3027 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3030 What are the difficulties here? Well, firstly, the relocations
3031 examined by the linker in check_relocs are against the function code
3032 sym .foo, while the dynamic relocation in the plt is emitted against
3033 the function descriptor symbol, foo. Somewhere along the line, we need
3034 to carefully copy dynamic link information from one symbol to the other.
3035 Secondly, the generic part of the elf linker will make .foo a dynamic
3036 symbol as is normal for most other backends. We need foo dynamic
3037 instead, at least for an application final link. However, when
3038 creating a shared library containing foo, we need to have both symbols
3039 dynamic so that references to .foo are satisfied during the early
3040 stages of linking. Otherwise the linker might decide to pull in a
3041 definition from some other object, eg. a static library.
3043 Update: As of August 2004, we support a new convention. Function
3044 calls may use the function descriptor symbol, ie. "bl foo". This
3045 behaves exactly as "bl .foo". */
3047 /* The linker needs to keep track of the number of relocs that it
3048 decides to copy as dynamic relocs in check_relocs for each symbol.
3049 This is so that it can later discard them if they are found to be
3050 unnecessary. We store the information in a field extending the
3051 regular ELF linker hash table. */
3053 struct ppc_dyn_relocs
3055 struct ppc_dyn_relocs *next;
3057 /* The input section of the reloc. */
3060 /* Total number of relocs copied for the input section. */
3061 bfd_size_type count;
3063 /* Number of pc-relative relocs copied for the input section. */
3064 bfd_size_type pc_count;
3067 /* Track GOT entries needed for a given symbol. We might need more
3068 than one got entry per symbol. */
3071 struct got_entry *next;
3073 /* The symbol addend that we'll be placing in the GOT. */
3076 /* Unlike other ELF targets, we use separate GOT entries for the same
3077 symbol referenced from different input files. This is to support
3078 automatic multiple TOC/GOT sections, where the TOC base can vary
3079 from one input file to another.
3081 Point to the BFD owning this GOT entry. */
3084 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3085 TLS_TPREL or TLS_DTPREL for tls entries. */
3088 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3091 bfd_signed_vma refcount;
3096 /* The same for PLT. */
3099 struct plt_entry *next;
3105 bfd_signed_vma refcount;
3110 /* Of those relocs that might be copied as dynamic relocs, this macro
3111 selects those that must be copied when linking a shared library,
3112 even when the symbol is local. */
3114 #define MUST_BE_DYN_RELOC(RTYPE) \
3115 ((RTYPE) != R_PPC64_REL32 \
3116 && (RTYPE) != R_PPC64_REL64 \
3117 && (RTYPE) != R_PPC64_REL30)
3119 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3120 copying dynamic variables from a shared lib into an app's dynbss
3121 section, and instead use a dynamic relocation to point into the
3122 shared lib. With code that gcc generates, it's vital that this be
3123 enabled; In the PowerPC64 ABI, the address of a function is actually
3124 the address of a function descriptor, which resides in the .opd
3125 section. gcc uses the descriptor directly rather than going via the
3126 GOT as some other ABI's do, which means that initialized function
3127 pointers must reference the descriptor. Thus, a function pointer
3128 initialized to the address of a function in a shared library will
3129 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3130 redefines the function descriptor symbol to point to the copy. This
3131 presents a problem as a plt entry for that function is also
3132 initialized from the function descriptor symbol and the copy reloc
3133 may not be initialized first. */
3134 #define ELIMINATE_COPY_RELOCS 1
3136 /* Section name for stubs is the associated section name plus this
3138 #define STUB_SUFFIX ".stub"
3141 ppc_stub_long_branch:
3142 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3143 destination, but a 24 bit branch in a stub section will reach.
3146 ppc_stub_plt_branch:
3147 Similar to the above, but a 24 bit branch in the stub section won't
3148 reach its destination.
3149 . addis %r12,%r2,xxx@toc@ha
3150 . ld %r11,xxx@toc@l(%r12)
3155 Used to call a function in a shared library. If it so happens that
3156 the plt entry referenced crosses a 64k boundary, then an extra
3157 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3158 xxx+16 as appropriate.
3159 . addis %r12,%r2,xxx@toc@ha
3161 . ld %r11,xxx+0@toc@l(%r12)
3162 . ld %r2,xxx+8@toc@l(%r12)
3164 . ld %r11,xxx+16@toc@l(%r12)
3167 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3168 code to adjust the value and save r2 to support multiple toc sections.
3169 A ppc_stub_long_branch with an r2 offset looks like:
3171 . addis %r2,%r2,off@ha
3172 . addi %r2,%r2,off@l
3175 A ppc_stub_plt_branch with an r2 offset looks like:
3177 . addis %r12,%r2,xxx@toc@ha
3178 . ld %r11,xxx@toc@l(%r12)
3179 . addis %r2,%r2,off@ha
3180 . addi %r2,%r2,off@l
3185 enum ppc_stub_type {
3187 ppc_stub_long_branch,
3188 ppc_stub_long_branch_r2off,
3189 ppc_stub_plt_branch,
3190 ppc_stub_plt_branch_r2off,
3194 struct ppc_stub_hash_entry {
3196 /* Base hash table entry structure. */
3197 struct bfd_hash_entry root;
3199 enum ppc_stub_type stub_type;
3201 /* The stub section. */
3204 /* Offset within stub_sec of the beginning of this stub. */
3205 bfd_vma stub_offset;
3207 /* Given the symbol's value and its section we can determine its final
3208 value when building the stubs (so the stub knows where to jump. */
3209 bfd_vma target_value;
3210 asection *target_section;
3212 /* The symbol table entry, if any, that this was derived from. */
3213 struct ppc_link_hash_entry *h;
3215 /* And the reloc addend that this was derived from. */
3218 /* Where this stub is being called from, or, in the case of combined
3219 stub sections, the first input section in the group. */
3223 struct ppc_branch_hash_entry {
3225 /* Base hash table entry structure. */
3226 struct bfd_hash_entry root;
3228 /* Offset within branch lookup table. */
3229 unsigned int offset;
3231 /* Generation marker. */
3235 struct ppc_link_hash_entry
3237 struct elf_link_hash_entry elf;
3240 /* A pointer to the most recently used stub hash entry against this
3242 struct ppc_stub_hash_entry *stub_cache;
3244 /* A pointer to the next symbol starting with a '.' */
3245 struct ppc_link_hash_entry *next_dot_sym;
3248 /* Track dynamic relocs copied for this symbol. */
3249 struct ppc_dyn_relocs *dyn_relocs;
3251 /* Link between function code and descriptor symbols. */
3252 struct ppc_link_hash_entry *oh;
3254 /* Flag function code and descriptor symbols. */
3255 unsigned int is_func:1;
3256 unsigned int is_func_descriptor:1;
3257 unsigned int fake:1;
3259 /* Whether global opd/toc sym has been adjusted or not.
3260 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3261 should be set for all globals defined in any opd/toc section. */
3262 unsigned int adjust_done:1;
3264 /* Set if we twiddled this symbol to weak at some stage. */
3265 unsigned int was_undefined:1;
3267 /* Contexts in which symbol is used in the GOT (or TOC).
3268 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3269 corresponding relocs are encountered during check_relocs.
3270 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3271 indicate the corresponding GOT entry type is not needed.
3272 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3273 a TPREL one. We use a separate flag rather than setting TPREL
3274 just for convenience in distinguishing the two cases. */
3275 #define TLS_GD 1 /* GD reloc. */
3276 #define TLS_LD 2 /* LD reloc. */
3277 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3278 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3279 #define TLS_TLS 16 /* Any TLS reloc. */
3280 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3281 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3285 /* ppc64 ELF linker hash table. */
3287 struct ppc_link_hash_table
3289 struct elf_link_hash_table elf;
3291 /* The stub hash table. */
3292 struct bfd_hash_table stub_hash_table;
3294 /* Another hash table for plt_branch stubs. */
3295 struct bfd_hash_table branch_hash_table;
3297 /* Linker stub bfd. */
3300 /* Linker call-backs. */
3301 asection * (*add_stub_section) (const char *, asection *);
3302 void (*layout_sections_again) (void);
3304 /* Array to keep track of which stub sections have been created, and
3305 information on stub grouping. */
3307 /* This is the section to which stubs in the group will be attached. */
3309 /* The stub section. */
3311 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3315 /* Temp used when calculating TOC pointers. */
3318 /* Highest input section id. */
3321 /* Highest output section index. */
3324 /* Used when adding symbols. */
3325 struct ppc_link_hash_entry *dot_syms;
3327 /* List of input sections for each output section. */
3328 asection **input_list;
3330 /* Short-cuts to get to dynamic linker sections. */
3341 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3342 struct ppc_link_hash_entry *tls_get_addr;
3343 struct ppc_link_hash_entry *tls_get_addr_fd;
3346 unsigned long stub_count[ppc_stub_plt_call];
3348 /* Number of stubs against global syms. */
3349 unsigned long stub_globals;
3351 /* Set if we should emit symbols for stubs. */
3352 unsigned int emit_stub_syms:1;
3354 /* Support for multiple toc sections. */
3355 unsigned int no_multi_toc:1;
3356 unsigned int multi_toc_needed:1;
3359 unsigned int stub_error:1;
3361 /* Flag set when small branches are detected. Used to
3362 select suitable defaults for the stub group size. */
3363 unsigned int has_14bit_branch:1;
3365 /* Temp used by ppc64_elf_check_directives. */
3366 unsigned int twiddled_syms:1;
3368 /* Incremented every time we size stubs. */
3369 unsigned int stub_iteration;
3371 /* Small local sym to section mapping cache. */
3372 struct sym_sec_cache sym_sec;
3375 /* Rename some of the generic section flags to better document how they
3377 #define has_toc_reloc has_gp_reloc
3378 #define makes_toc_func_call need_finalize_relax
3379 #define call_check_in_progress reloc_done
3381 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3383 #define ppc_hash_table(p) \
3384 ((struct ppc_link_hash_table *) ((p)->hash))
3386 #define ppc_stub_hash_lookup(table, string, create, copy) \
3387 ((struct ppc_stub_hash_entry *) \
3388 bfd_hash_lookup ((table), (string), (create), (copy)))
3390 #define ppc_branch_hash_lookup(table, string, create, copy) \
3391 ((struct ppc_branch_hash_entry *) \
3392 bfd_hash_lookup ((table), (string), (create), (copy)))
3394 /* Create an entry in the stub hash table. */
3396 static struct bfd_hash_entry *
3397 stub_hash_newfunc (struct bfd_hash_entry *entry,
3398 struct bfd_hash_table *table,
3401 /* Allocate the structure if it has not already been allocated by a
3405 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3410 /* Call the allocation method of the superclass. */
3411 entry = bfd_hash_newfunc (entry, table, string);
3414 struct ppc_stub_hash_entry *eh;
3416 /* Initialize the local fields. */
3417 eh = (struct ppc_stub_hash_entry *) entry;
3418 eh->stub_type = ppc_stub_none;
3419 eh->stub_sec = NULL;
3420 eh->stub_offset = 0;
3421 eh->target_value = 0;
3422 eh->target_section = NULL;
3430 /* Create an entry in the branch hash table. */
3432 static struct bfd_hash_entry *
3433 branch_hash_newfunc (struct bfd_hash_entry *entry,
3434 struct bfd_hash_table *table,
3437 /* Allocate the structure if it has not already been allocated by a
3441 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3446 /* Call the allocation method of the superclass. */
3447 entry = bfd_hash_newfunc (entry, table, string);
3450 struct ppc_branch_hash_entry *eh;
3452 /* Initialize the local fields. */
3453 eh = (struct ppc_branch_hash_entry *) entry;
3461 /* Create an entry in a ppc64 ELF linker hash table. */
3463 static struct bfd_hash_entry *
3464 link_hash_newfunc (struct bfd_hash_entry *entry,
3465 struct bfd_hash_table *table,
3468 /* Allocate the structure if it has not already been allocated by a
3472 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3477 /* Call the allocation method of the superclass. */
3478 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3481 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3483 memset (&eh->u.stub_cache, 0,
3484 (sizeof (struct ppc_link_hash_entry)
3485 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3487 /* When making function calls, old ABI code references function entry
3488 points (dot symbols), while new ABI code references the function
3489 descriptor symbol. We need to make any combination of reference and
3490 definition work together, without breaking archive linking.
3492 For a defined function "foo" and an undefined call to "bar":
3493 An old object defines "foo" and ".foo", references ".bar" (possibly
3495 A new object defines "foo" and references "bar".
3497 A new object thus has no problem with its undefined symbols being
3498 satisfied by definitions in an old object. On the other hand, the
3499 old object won't have ".bar" satisfied by a new object.
3501 Keep a list of newly added dot-symbols. */
3503 if (string[0] == '.')
3505 struct ppc_link_hash_table *htab;
3507 htab = (struct ppc_link_hash_table *) table;
3508 eh->u.next_dot_sym = htab->dot_syms;
3509 htab->dot_syms = eh;
3516 /* Create a ppc64 ELF linker hash table. */
3518 static struct bfd_link_hash_table *
3519 ppc64_elf_link_hash_table_create (bfd *abfd)
3521 struct ppc_link_hash_table *htab;
3522 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3524 htab = bfd_zmalloc (amt);
3528 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3529 sizeof (struct ppc_link_hash_entry)))
3535 /* Init the stub hash table too. */
3536 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3537 sizeof (struct ppc_stub_hash_entry)))
3540 /* And the branch hash table. */
3541 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3542 sizeof (struct ppc_branch_hash_entry)))
3545 /* Initializing two fields of the union is just cosmetic. We really
3546 only care about glist, but when compiled on a 32-bit host the
3547 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3548 debugger inspection of these fields look nicer. */
3549 htab->elf.init_got_refcount.refcount = 0;
3550 htab->elf.init_got_refcount.glist = NULL;
3551 htab->elf.init_plt_refcount.refcount = 0;
3552 htab->elf.init_plt_refcount.glist = NULL;
3553 htab->elf.init_got_offset.offset = 0;
3554 htab->elf.init_got_offset.glist = NULL;
3555 htab->elf.init_plt_offset.offset = 0;
3556 htab->elf.init_plt_offset.glist = NULL;
3558 return &htab->elf.root;
3561 /* Free the derived linker hash table. */
3564 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3566 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3568 bfd_hash_table_free (&ret->stub_hash_table);
3569 bfd_hash_table_free (&ret->branch_hash_table);
3570 _bfd_generic_link_hash_table_free (hash);
3573 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3576 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3578 struct ppc_link_hash_table *htab;
3580 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3582 /* Always hook our dynamic sections into the first bfd, which is the
3583 linker created stub bfd. This ensures that the GOT header is at
3584 the start of the output TOC section. */
3585 htab = ppc_hash_table (info);
3586 htab->stub_bfd = abfd;
3587 htab->elf.dynobj = abfd;
3590 /* Build a name for an entry in the stub hash table. */
3593 ppc_stub_name (const asection *input_section,
3594 const asection *sym_sec,
3595 const struct ppc_link_hash_entry *h,
3596 const Elf_Internal_Rela *rel)
3601 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3602 offsets from a sym as a branch target? In fact, we could
3603 probably assume the addend is always zero. */
3604 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3608 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3609 stub_name = bfd_malloc (len);
3610 if (stub_name == NULL)
3613 sprintf (stub_name, "%08x.%s+%x",
3614 input_section->id & 0xffffffff,
3615 h->elf.root.root.string,
3616 (int) rel->r_addend & 0xffffffff);
3620 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3621 stub_name = bfd_malloc (len);
3622 if (stub_name == NULL)
3625 sprintf (stub_name, "%08x.%x:%x+%x",
3626 input_section->id & 0xffffffff,
3627 sym_sec->id & 0xffffffff,
3628 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3629 (int) rel->r_addend & 0xffffffff);
3631 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3632 stub_name[len - 2] = 0;
3636 /* Look up an entry in the stub hash. Stub entries are cached because
3637 creating the stub name takes a bit of time. */
3639 static struct ppc_stub_hash_entry *
3640 ppc_get_stub_entry (const asection *input_section,
3641 const asection *sym_sec,
3642 struct ppc_link_hash_entry *h,
3643 const Elf_Internal_Rela *rel,
3644 struct ppc_link_hash_table *htab)
3646 struct ppc_stub_hash_entry *stub_entry;
3647 const asection *id_sec;
3649 /* If this input section is part of a group of sections sharing one
3650 stub section, then use the id of the first section in the group.
3651 Stub names need to include a section id, as there may well be
3652 more than one stub used to reach say, printf, and we need to
3653 distinguish between them. */
3654 id_sec = htab->stub_group[input_section->id].link_sec;
3656 if (h != NULL && h->u.stub_cache != NULL
3657 && h->u.stub_cache->h == h
3658 && h->u.stub_cache->id_sec == id_sec)
3660 stub_entry = h->u.stub_cache;
3666 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3667 if (stub_name == NULL)
3670 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3671 stub_name, FALSE, FALSE);
3673 h->u.stub_cache = stub_entry;
3681 /* Add a new stub entry to the stub hash. Not all fields of the new
3682 stub entry are initialised. */
3684 static struct ppc_stub_hash_entry *
3685 ppc_add_stub (const char *stub_name,
3687 struct ppc_link_hash_table *htab)
3691 struct ppc_stub_hash_entry *stub_entry;
3693 link_sec = htab->stub_group[section->id].link_sec;
3694 stub_sec = htab->stub_group[section->id].stub_sec;
3695 if (stub_sec == NULL)
3697 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3698 if (stub_sec == NULL)
3704 namelen = strlen (link_sec->name);
3705 len = namelen + sizeof (STUB_SUFFIX);
3706 s_name = bfd_alloc (htab->stub_bfd, len);
3710 memcpy (s_name, link_sec->name, namelen);
3711 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3712 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3713 if (stub_sec == NULL)
3715 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3717 htab->stub_group[section->id].stub_sec = stub_sec;
3720 /* Enter this entry into the linker stub hash table. */
3721 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3723 if (stub_entry == NULL)
3725 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3726 section->owner, stub_name);
3730 stub_entry->stub_sec = stub_sec;
3731 stub_entry->stub_offset = 0;
3732 stub_entry->id_sec = link_sec;
3736 /* Create sections for linker generated code. */
3739 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3741 struct ppc_link_hash_table *htab;
3744 htab = ppc_hash_table (info);
3746 /* Create .sfpr for code to save and restore fp regs. */
3747 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3748 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3749 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3751 if (htab->sfpr == NULL
3752 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3755 /* Create .glink for lazy dynamic linking support. */
3756 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3758 if (htab->glink == NULL
3759 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
3762 /* Create branch lookup table for plt_branch stubs. */
3765 flags = (SEC_ALLOC | SEC_LOAD
3766 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3768 = bfd_make_section_anyway_with_flags (dynobj, ".data.rel.ro.brlt",
3773 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3774 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3776 = bfd_make_section_anyway_with_flags (dynobj, ".rodata.brlt", flags);
3779 if (htab->brlt == NULL
3780 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3785 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3786 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3788 = bfd_make_section_anyway_with_flags (dynobj, ".rela.data.rel.ro.brlt",
3791 else if (info->emitrelocations)
3793 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3794 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3796 = bfd_make_section_anyway_with_flags (dynobj, ".rela.rodata.brlt",
3803 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3809 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3810 not already done. */
3813 create_got_section (bfd *abfd, struct bfd_link_info *info)
3815 asection *got, *relgot;
3817 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3821 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3824 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3829 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3830 | SEC_LINKER_CREATED);
3832 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
3834 || !bfd_set_section_alignment (abfd, got, 3))
3837 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3838 flags | SEC_READONLY);
3840 || ! bfd_set_section_alignment (abfd, relgot, 3))
3843 ppc64_elf_tdata (abfd)->got = got;
3844 ppc64_elf_tdata (abfd)->relgot = relgot;
3848 /* Create the dynamic sections, and set up shortcuts. */
3851 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3853 struct ppc_link_hash_table *htab;
3855 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3858 htab = ppc_hash_table (info);
3860 htab->got = bfd_get_section_by_name (dynobj, ".got");
3861 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3862 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3863 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3865 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3867 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3868 || (!info->shared && !htab->relbss))
3874 /* Merge PLT info on FROM with that on TO. */
3877 move_plt_plist (struct ppc_link_hash_entry *from,
3878 struct ppc_link_hash_entry *to)
3880 if (from->elf.plt.plist != NULL)
3882 if (to->elf.plt.plist != NULL)
3884 struct plt_entry **entp;
3885 struct plt_entry *ent;
3887 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3889 struct plt_entry *dent;
3891 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3892 if (dent->addend == ent->addend)
3894 dent->plt.refcount += ent->plt.refcount;
3901 *entp = to->elf.plt.plist;
3904 to->elf.plt.plist = from->elf.plt.plist;
3905 from->elf.plt.plist = NULL;
3909 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3912 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
3913 struct elf_link_hash_entry *dir,
3914 struct elf_link_hash_entry *ind)
3916 struct ppc_link_hash_entry *edir, *eind;
3918 edir = (struct ppc_link_hash_entry *) dir;
3919 eind = (struct ppc_link_hash_entry *) ind;
3921 /* Copy over any dynamic relocs we may have on the indirect sym. */
3922 if (eind->dyn_relocs != NULL)
3924 if (edir->dyn_relocs != NULL)
3926 struct ppc_dyn_relocs **pp;
3927 struct ppc_dyn_relocs *p;
3929 /* Add reloc counts against the indirect sym to the direct sym
3930 list. Merge any entries against the same section. */
3931 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3933 struct ppc_dyn_relocs *q;
3935 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3936 if (q->sec == p->sec)
3938 q->pc_count += p->pc_count;
3939 q->count += p->count;
3946 *pp = edir->dyn_relocs;
3949 edir->dyn_relocs = eind->dyn_relocs;
3950 eind->dyn_relocs = NULL;
3953 edir->is_func |= eind->is_func;
3954 edir->is_func_descriptor |= eind->is_func_descriptor;
3955 edir->tls_mask |= eind->tls_mask;
3957 /* If called to transfer flags for a weakdef during processing
3958 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3959 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3960 if (!(ELIMINATE_COPY_RELOCS
3961 && eind->elf.root.type != bfd_link_hash_indirect
3962 && edir->elf.dynamic_adjusted))
3963 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3965 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3966 edir->elf.ref_regular |= eind->elf.ref_regular;
3967 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3968 edir->elf.needs_plt |= eind->elf.needs_plt;
3970 /* If we were called to copy over info for a weak sym, that's all. */
3971 if (eind->elf.root.type != bfd_link_hash_indirect)
3974 /* Copy over got entries that we may have already seen to the
3975 symbol which just became indirect. */
3976 if (eind->elf.got.glist != NULL)
3978 if (edir->elf.got.glist != NULL)
3980 struct got_entry **entp;
3981 struct got_entry *ent;
3983 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3985 struct got_entry *dent;
3987 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3988 if (dent->addend == ent->addend
3989 && dent->owner == ent->owner
3990 && dent->tls_type == ent->tls_type)
3992 dent->got.refcount += ent->got.refcount;
3999 *entp = edir->elf.got.glist;
4002 edir->elf.got.glist = eind->elf.got.glist;
4003 eind->elf.got.glist = NULL;
4006 /* And plt entries. */
4007 move_plt_plist (eind, edir);
4009 if (eind->elf.dynindx != -1)
4011 if (edir->elf.dynindx != -1)
4012 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4013 edir->elf.dynstr_index);
4014 edir->elf.dynindx = eind->elf.dynindx;
4015 edir->elf.dynstr_index = eind->elf.dynstr_index;
4016 eind->elf.dynindx = -1;
4017 eind->elf.dynstr_index = 0;
4021 /* Find the function descriptor hash entry from the given function code
4022 hash entry FH. Link the entries via their OH fields. */
4024 static struct ppc_link_hash_entry *
4025 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4027 struct ppc_link_hash_entry *fdh = fh->oh;
4031 const char *fd_name = fh->elf.root.root.string + 1;
4033 fdh = (struct ppc_link_hash_entry *)
4034 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4037 fdh->is_func_descriptor = 1;
4047 /* Make a fake function descriptor sym for the code sym FH. */
4049 static struct ppc_link_hash_entry *
4050 make_fdh (struct bfd_link_info *info,
4051 struct ppc_link_hash_entry *fh)
4055 struct bfd_link_hash_entry *bh;
4056 struct ppc_link_hash_entry *fdh;
4058 abfd = fh->elf.root.u.undef.abfd;
4059 newsym = bfd_make_empty_symbol (abfd);
4060 newsym->name = fh->elf.root.root.string + 1;
4061 newsym->section = bfd_und_section_ptr;
4063 newsym->flags = BSF_WEAK;
4066 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4067 newsym->flags, newsym->section,
4068 newsym->value, NULL, FALSE, FALSE,
4072 fdh = (struct ppc_link_hash_entry *) bh;
4073 fdh->elf.non_elf = 0;
4075 fdh->is_func_descriptor = 1;
4082 /* Fix function descriptor symbols defined in .opd sections to be
4086 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4087 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4088 Elf_Internal_Sym *isym,
4089 const char **name ATTRIBUTE_UNUSED,
4090 flagword *flags ATTRIBUTE_UNUSED,
4092 bfd_vma *value ATTRIBUTE_UNUSED)
4095 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4096 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4101 /* This function makes an old ABI object reference to ".bar" cause the
4102 inclusion of a new ABI object archive that defines "bar".
4103 NAME is a symbol defined in an archive. Return a symbol in the hash
4104 table that might be satisfied by the archive symbols. */
4106 static struct elf_link_hash_entry *
4107 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4108 struct bfd_link_info *info,
4111 struct elf_link_hash_entry *h;
4115 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4117 /* Don't return this sym if it is a fake function descriptor
4118 created by add_symbol_adjust. */
4119 && !(h->root.type == bfd_link_hash_undefweak
4120 && ((struct ppc_link_hash_entry *) h)->fake))
4126 len = strlen (name);
4127 dot_name = bfd_alloc (abfd, len + 2);
4128 if (dot_name == NULL)
4129 return (struct elf_link_hash_entry *) 0 - 1;
4131 memcpy (dot_name + 1, name, len + 1);
4132 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4133 bfd_release (abfd, dot_name);
4137 /* This function satisfies all old ABI object references to ".bar" if a
4138 new ABI object defines "bar". Well, at least, undefined dot symbols
4139 are made weak. This stops later archive searches from including an
4140 object if we already have a function descriptor definition. It also
4141 prevents the linker complaining about undefined symbols.
4142 We also check and correct mismatched symbol visibility here. The
4143 most restrictive visibility of the function descriptor and the
4144 function entry symbol is used. */
4147 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4149 struct ppc_link_hash_table *htab;
4150 struct ppc_link_hash_entry *fdh;
4152 if (eh->elf.root.type == bfd_link_hash_indirect)
4155 if (eh->elf.root.type == bfd_link_hash_warning)
4156 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4158 if (eh->elf.root.root.string[0] != '.')
4161 htab = ppc_hash_table (info);
4162 fdh = get_fdh (eh, htab);
4164 && !info->relocatable
4165 && (eh->elf.root.type == bfd_link_hash_undefined
4166 || eh->elf.root.type == bfd_link_hash_undefweak)
4167 && eh->elf.ref_regular)
4169 /* Make an undefweak function descriptor sym, which is enough to
4170 pull in an --as-needed shared lib, but won't cause link
4171 errors. Archives are handled elsewhere. */
4172 fdh = make_fdh (info, eh);
4176 fdh->elf.ref_regular = 1;
4178 else if (fdh != NULL)
4180 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4181 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4182 if (entry_vis < descr_vis)
4183 fdh->elf.other += entry_vis - descr_vis;
4184 else if (entry_vis > descr_vis)
4185 eh->elf.other += descr_vis - entry_vis;
4187 if ((fdh->elf.root.type == bfd_link_hash_defined
4188 || fdh->elf.root.type == bfd_link_hash_defweak)
4189 && eh->elf.root.type == bfd_link_hash_undefined)
4191 eh->elf.root.type = bfd_link_hash_undefweak;
4192 eh->was_undefined = 1;
4193 htab->twiddled_syms = 1;
4200 /* Process list of dot-symbols we made in link_hash_newfunc. */
4203 ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
4205 struct ppc_link_hash_table *htab;
4206 struct ppc_link_hash_entry **p, *eh;
4208 htab = ppc_hash_table (info);
4209 if (!is_ppc64_elf_target (htab->elf.root.creator))
4212 if (is_ppc64_elf_target (ibfd->xvec))
4214 p = &htab->dot_syms;
4215 while ((eh = *p) != NULL)
4218 if (!add_symbol_adjust (eh, info))
4220 p = &eh->u.next_dot_sym;
4224 /* Clear the list for non-ppc64 input files. */
4225 p = &htab->dot_syms;
4226 while ((eh = *p) != NULL)
4229 p = &eh->u.next_dot_sym;
4232 /* We need to fix the undefs list for any syms we have twiddled to
4234 if (htab->twiddled_syms)
4236 bfd_link_repair_undef_list (&htab->elf.root);
4237 htab->twiddled_syms = 0;
4243 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4244 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4246 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4247 char *local_got_tls_masks;
4249 if (local_got_ents == NULL)
4251 bfd_size_type size = symtab_hdr->sh_info;
4253 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4254 local_got_ents = bfd_zalloc (abfd, size);
4255 if (local_got_ents == NULL)
4257 elf_local_got_ents (abfd) = local_got_ents;
4260 if ((tls_type & TLS_EXPLICIT) == 0)
4262 struct got_entry *ent;
4264 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4265 if (ent->addend == r_addend
4266 && ent->owner == abfd
4267 && ent->tls_type == tls_type)
4271 bfd_size_type amt = sizeof (*ent);
4272 ent = bfd_alloc (abfd, amt);
4275 ent->next = local_got_ents[r_symndx];
4276 ent->addend = r_addend;
4278 ent->tls_type = tls_type;
4279 ent->got.refcount = 0;
4280 local_got_ents[r_symndx] = ent;
4282 ent->got.refcount += 1;
4285 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4286 local_got_tls_masks[r_symndx] |= tls_type;
4291 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4293 struct plt_entry *ent;
4295 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4296 if (ent->addend == addend)
4300 bfd_size_type amt = sizeof (*ent);
4301 ent = bfd_alloc (abfd, amt);
4304 ent->next = eh->elf.plt.plist;
4305 ent->addend = addend;
4306 ent->plt.refcount = 0;
4307 eh->elf.plt.plist = ent;
4309 ent->plt.refcount += 1;
4310 eh->elf.needs_plt = 1;
4311 if (eh->elf.root.root.string[0] == '.'
4312 && eh->elf.root.root.string[1] != '\0')
4317 /* Look through the relocs for a section during the first phase, and
4318 calculate needed space in the global offset table, procedure
4319 linkage table, and dynamic reloc sections. */
4322 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4323 asection *sec, const Elf_Internal_Rela *relocs)
4325 struct ppc_link_hash_table *htab;
4326 Elf_Internal_Shdr *symtab_hdr;
4327 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4328 const Elf_Internal_Rela *rel;
4329 const Elf_Internal_Rela *rel_end;
4331 asection **opd_sym_map;
4333 if (info->relocatable)
4336 /* Don't do anything special with non-loaded, non-alloced sections.
4337 In particular, any relocs in such sections should not affect GOT
4338 and PLT reference counting (ie. we don't allow them to create GOT
4339 or PLT entries), there's no possibility or desire to optimize TLS
4340 relocs, and there's not much point in propagating relocs to shared
4341 libs that the dynamic linker won't relocate. */
4342 if ((sec->flags & SEC_ALLOC) == 0)
4345 htab = ppc_hash_table (info);
4346 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4348 sym_hashes = elf_sym_hashes (abfd);
4349 sym_hashes_end = (sym_hashes
4350 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4351 - symtab_hdr->sh_info);
4355 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4357 /* Garbage collection needs some extra help with .opd sections.
4358 We don't want to necessarily keep everything referenced by
4359 relocs in .opd, as that would keep all functions. Instead,
4360 if we reference an .opd symbol (a function descriptor), we
4361 want to keep the function code symbol's section. This is
4362 easy for global symbols, but for local syms we need to keep
4363 information about the associated function section. Later, if
4364 edit_opd deletes entries, we'll use this array to adjust
4365 local syms in .opd. */
4367 asection *func_section;
4372 amt = sec->size * sizeof (union opd_info) / 8;
4373 opd_sym_map = bfd_zalloc (abfd, amt);
4374 if (opd_sym_map == NULL)
4376 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4379 if (htab->sfpr == NULL
4380 && !create_linkage_sections (htab->elf.dynobj, info))
4383 rel_end = relocs + sec->reloc_count;
4384 for (rel = relocs; rel < rel_end; rel++)
4386 unsigned long r_symndx;
4387 struct elf_link_hash_entry *h;
4388 enum elf_ppc64_reloc_type r_type;
4391 r_symndx = ELF64_R_SYM (rel->r_info);
4392 if (r_symndx < symtab_hdr->sh_info)
4396 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4397 while (h->root.type == bfd_link_hash_indirect
4398 || h->root.type == bfd_link_hash_warning)
4399 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4402 r_type = ELF64_R_TYPE (rel->r_info);
4405 case R_PPC64_GOT_TLSLD16:
4406 case R_PPC64_GOT_TLSLD16_LO:
4407 case R_PPC64_GOT_TLSLD16_HI:
4408 case R_PPC64_GOT_TLSLD16_HA:
4409 ppc64_tlsld_got (abfd)->refcount += 1;
4410 tls_type = TLS_TLS | TLS_LD;
4413 case R_PPC64_GOT_TLSGD16:
4414 case R_PPC64_GOT_TLSGD16_LO:
4415 case R_PPC64_GOT_TLSGD16_HI:
4416 case R_PPC64_GOT_TLSGD16_HA:
4417 tls_type = TLS_TLS | TLS_GD;
4420 case R_PPC64_GOT_TPREL16_DS:
4421 case R_PPC64_GOT_TPREL16_LO_DS:
4422 case R_PPC64_GOT_TPREL16_HI:
4423 case R_PPC64_GOT_TPREL16_HA:
4425 info->flags |= DF_STATIC_TLS;
4426 tls_type = TLS_TLS | TLS_TPREL;
4429 case R_PPC64_GOT_DTPREL16_DS:
4430 case R_PPC64_GOT_DTPREL16_LO_DS:
4431 case R_PPC64_GOT_DTPREL16_HI:
4432 case R_PPC64_GOT_DTPREL16_HA:
4433 tls_type = TLS_TLS | TLS_DTPREL;
4435 sec->has_tls_reloc = 1;
4439 case R_PPC64_GOT16_DS:
4440 case R_PPC64_GOT16_HA:
4441 case R_PPC64_GOT16_HI:
4442 case R_PPC64_GOT16_LO:
4443 case R_PPC64_GOT16_LO_DS:
4444 /* This symbol requires a global offset table entry. */
4445 sec->has_toc_reloc = 1;
4446 if (ppc64_elf_tdata (abfd)->got == NULL
4447 && !create_got_section (abfd, info))
4452 struct ppc_link_hash_entry *eh;
4453 struct got_entry *ent;
4455 eh = (struct ppc_link_hash_entry *) h;
4456 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4457 if (ent->addend == rel->r_addend
4458 && ent->owner == abfd
4459 && ent->tls_type == tls_type)
4463 bfd_size_type amt = sizeof (*ent);
4464 ent = bfd_alloc (abfd, amt);
4467 ent->next = eh->elf.got.glist;
4468 ent->addend = rel->r_addend;
4470 ent->tls_type = tls_type;
4471 ent->got.refcount = 0;
4472 eh->elf.got.glist = ent;
4474 ent->got.refcount += 1;
4475 eh->tls_mask |= tls_type;
4478 /* This is a global offset table entry for a local symbol. */
4479 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4480 rel->r_addend, tls_type))
4484 case R_PPC64_PLT16_HA:
4485 case R_PPC64_PLT16_HI:
4486 case R_PPC64_PLT16_LO:
4489 /* This symbol requires a procedure linkage table entry. We
4490 actually build the entry in adjust_dynamic_symbol,
4491 because this might be a case of linking PIC code without
4492 linking in any dynamic objects, in which case we don't
4493 need to generate a procedure linkage table after all. */
4496 /* It does not make sense to have a procedure linkage
4497 table entry for a local symbol. */
4498 bfd_set_error (bfd_error_bad_value);
4502 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4507 /* The following relocations don't need to propagate the
4508 relocation if linking a shared object since they are
4509 section relative. */
4510 case R_PPC64_SECTOFF:
4511 case R_PPC64_SECTOFF_LO:
4512 case R_PPC64_SECTOFF_HI:
4513 case R_PPC64_SECTOFF_HA:
4514 case R_PPC64_SECTOFF_DS:
4515 case R_PPC64_SECTOFF_LO_DS:
4516 case R_PPC64_DTPREL16:
4517 case R_PPC64_DTPREL16_LO:
4518 case R_PPC64_DTPREL16_HI:
4519 case R_PPC64_DTPREL16_HA:
4520 case R_PPC64_DTPREL16_DS:
4521 case R_PPC64_DTPREL16_LO_DS:
4522 case R_PPC64_DTPREL16_HIGHER:
4523 case R_PPC64_DTPREL16_HIGHERA:
4524 case R_PPC64_DTPREL16_HIGHEST:
4525 case R_PPC64_DTPREL16_HIGHESTA:
4530 case R_PPC64_TOC16_LO:
4531 case R_PPC64_TOC16_HI:
4532 case R_PPC64_TOC16_HA:
4533 case R_PPC64_TOC16_DS:
4534 case R_PPC64_TOC16_LO_DS:
4535 sec->has_toc_reloc = 1;
4538 /* This relocation describes the C++ object vtable hierarchy.
4539 Reconstruct it for later use during GC. */
4540 case R_PPC64_GNU_VTINHERIT:
4541 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4545 /* This relocation describes which C++ vtable entries are actually
4546 used. Record for later use during GC. */
4547 case R_PPC64_GNU_VTENTRY:
4548 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4553 case R_PPC64_REL14_BRTAKEN:
4554 case R_PPC64_REL14_BRNTAKEN:
4556 asection *dest = NULL;
4558 /* Heuristic: If jumping outside our section, chances are
4559 we are going to need a stub. */
4562 /* If the sym is weak it may be overridden later, so
4563 don't assume we know where a weak sym lives. */
4564 if (h->root.type == bfd_link_hash_defined)
4565 dest = h->root.u.def.section;
4568 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4571 htab->has_14bit_branch = 1;
4578 /* We may need a .plt entry if the function this reloc
4579 refers to is in a shared lib. */
4580 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4583 if (h == &htab->tls_get_addr->elf
4584 || h == &htab->tls_get_addr_fd->elf)
4585 sec->has_tls_reloc = 1;
4586 else if (htab->tls_get_addr == NULL
4587 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
4588 && (h->root.root.string[15] == 0
4589 || h->root.root.string[15] == '@'))
4591 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4592 sec->has_tls_reloc = 1;
4594 else if (htab->tls_get_addr_fd == NULL
4595 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
4596 && (h->root.root.string[14] == 0
4597 || h->root.root.string[14] == '@'))
4599 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4600 sec->has_tls_reloc = 1;
4605 case R_PPC64_TPREL64:
4606 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4608 info->flags |= DF_STATIC_TLS;
4611 case R_PPC64_DTPMOD64:
4612 if (rel + 1 < rel_end
4613 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4614 && rel[1].r_offset == rel->r_offset + 8)
4615 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4617 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4620 case R_PPC64_DTPREL64:
4621 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4623 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4624 && rel[-1].r_offset == rel->r_offset - 8)
4625 /* This is the second reloc of a dtpmod, dtprel pair.
4626 Don't mark with TLS_DTPREL. */
4630 sec->has_tls_reloc = 1;
4633 struct ppc_link_hash_entry *eh;
4634 eh = (struct ppc_link_hash_entry *) h;
4635 eh->tls_mask |= tls_type;
4638 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4639 rel->r_addend, tls_type))
4642 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4644 /* One extra to simplify get_tls_mask. */
4645 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4646 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4647 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4650 BFD_ASSERT (rel->r_offset % 8 == 0);
4651 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4653 /* Mark the second slot of a GD or LD entry.
4654 -1 to indicate GD and -2 to indicate LD. */
4655 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4656 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4657 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4658 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4661 case R_PPC64_TPREL16:
4662 case R_PPC64_TPREL16_LO:
4663 case R_PPC64_TPREL16_HI:
4664 case R_PPC64_TPREL16_HA:
4665 case R_PPC64_TPREL16_DS:
4666 case R_PPC64_TPREL16_LO_DS:
4667 case R_PPC64_TPREL16_HIGHER:
4668 case R_PPC64_TPREL16_HIGHERA:
4669 case R_PPC64_TPREL16_HIGHEST:
4670 case R_PPC64_TPREL16_HIGHESTA:
4673 info->flags |= DF_STATIC_TLS;
4678 case R_PPC64_ADDR64:
4679 if (opd_sym_map != NULL
4680 && rel + 1 < rel_end
4681 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4685 if (h->root.root.string[0] == '.'
4686 && h->root.root.string[1] != 0
4687 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4690 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4696 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4701 opd_sym_map[rel->r_offset / 8] = s;
4709 case R_PPC64_ADDR14:
4710 case R_PPC64_ADDR14_BRNTAKEN:
4711 case R_PPC64_ADDR14_BRTAKEN:
4712 case R_PPC64_ADDR16:
4713 case R_PPC64_ADDR16_DS:
4714 case R_PPC64_ADDR16_HA:
4715 case R_PPC64_ADDR16_HI:
4716 case R_PPC64_ADDR16_HIGHER:
4717 case R_PPC64_ADDR16_HIGHERA:
4718 case R_PPC64_ADDR16_HIGHEST:
4719 case R_PPC64_ADDR16_HIGHESTA:
4720 case R_PPC64_ADDR16_LO:
4721 case R_PPC64_ADDR16_LO_DS:
4722 case R_PPC64_ADDR24:
4723 case R_PPC64_ADDR32:
4724 case R_PPC64_UADDR16:
4725 case R_PPC64_UADDR32:
4726 case R_PPC64_UADDR64:
4728 if (h != NULL && !info->shared)
4729 /* We may need a copy reloc. */
4732 /* Don't propagate .opd relocs. */
4733 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4736 /* If we are creating a shared library, and this is a reloc
4737 against a global symbol, or a non PC relative reloc
4738 against a local symbol, then we need to copy the reloc
4739 into the shared library. However, if we are linking with
4740 -Bsymbolic, we do not need to copy a reloc against a
4741 global symbol which is defined in an object we are
4742 including in the link (i.e., DEF_REGULAR is set). At
4743 this point we have not seen all the input files, so it is
4744 possible that DEF_REGULAR is not set now but will be set
4745 later (it is never cleared). In case of a weak definition,
4746 DEF_REGULAR may be cleared later by a strong definition in
4747 a shared library. We account for that possibility below by
4748 storing information in the dyn_relocs field of the hash
4749 table entry. A similar situation occurs when creating
4750 shared libraries and symbol visibility changes render the
4753 If on the other hand, we are creating an executable, we
4754 may need to keep relocations for symbols satisfied by a
4755 dynamic library if we manage to avoid copy relocs for the
4759 && (MUST_BE_DYN_RELOC (r_type)
4761 && (! info->symbolic
4762 || h->root.type == bfd_link_hash_defweak
4763 || !h->def_regular))))
4764 || (ELIMINATE_COPY_RELOCS
4767 && (h->root.type == bfd_link_hash_defweak
4768 || !h->def_regular)))
4770 struct ppc_dyn_relocs *p;
4771 struct ppc_dyn_relocs **head;
4773 /* We must copy these reloc types into the output file.
4774 Create a reloc section in dynobj and make room for
4781 name = (bfd_elf_string_from_elf_section
4783 elf_elfheader (abfd)->e_shstrndx,
4784 elf_section_data (sec)->rel_hdr.sh_name));
4788 if (! CONST_STRNEQ (name, ".rela")
4789 || strcmp (bfd_get_section_name (abfd, sec),
4792 (*_bfd_error_handler)
4793 (_("%B: bad relocation section name `%s\'"),
4795 bfd_set_error (bfd_error_bad_value);
4798 dynobj = htab->elf.dynobj;
4799 sreloc = bfd_get_section_by_name (dynobj, name);
4804 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4805 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4806 | SEC_ALLOC | SEC_LOAD);
4807 sreloc = bfd_make_section_with_flags (dynobj,
4811 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4814 elf_section_data (sec)->sreloc = sreloc;
4817 /* If this is a global symbol, we count the number of
4818 relocations we need for this symbol. */
4821 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4825 /* Track dynamic relocs needed for local syms too.
4826 We really need local syms available to do this
4832 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4837 vpp = &elf_section_data (s)->local_dynrel;
4838 head = (struct ppc_dyn_relocs **) vpp;
4842 if (p == NULL || p->sec != sec)
4844 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4855 if (!MUST_BE_DYN_RELOC (r_type))
4868 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4869 of the code entry point, and its section. */
4872 opd_entry_value (asection *opd_sec,
4874 asection **code_sec,
4877 bfd *opd_bfd = opd_sec->owner;
4878 Elf_Internal_Rela *relocs;
4879 Elf_Internal_Rela *lo, *hi, *look;
4882 /* No relocs implies we are linking a --just-symbols object. */
4883 if (opd_sec->reloc_count == 0)
4887 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4888 return (bfd_vma) -1;
4890 if (code_sec != NULL)
4892 asection *sec, *likely = NULL;
4893 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4895 && (sec->flags & SEC_LOAD) != 0
4896 && (sec->flags & SEC_ALLOC) != 0)
4901 if (code_off != NULL)
4902 *code_off = val - likely->vma;
4908 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4910 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4912 /* Go find the opd reloc at the sym address. */
4914 BFD_ASSERT (lo != NULL);
4915 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4919 look = lo + (hi - lo) / 2;
4920 if (look->r_offset < offset)
4922 else if (look->r_offset > offset)
4926 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4927 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4928 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4930 unsigned long symndx = ELF64_R_SYM (look->r_info);
4933 if (symndx < symtab_hdr->sh_info)
4935 Elf_Internal_Sym *sym;
4937 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4940 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4941 symtab_hdr->sh_info,
4942 0, NULL, NULL, NULL);
4945 symtab_hdr->contents = (bfd_byte *) sym;
4949 val = sym->st_value;
4951 if ((sym->st_shndx != SHN_UNDEF
4952 && sym->st_shndx < SHN_LORESERVE)
4953 || sym->st_shndx > SHN_HIRESERVE)
4954 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4955 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4959 struct elf_link_hash_entry **sym_hashes;
4960 struct elf_link_hash_entry *rh;
4962 sym_hashes = elf_sym_hashes (opd_bfd);
4963 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4964 while (rh->root.type == bfd_link_hash_indirect
4965 || rh->root.type == bfd_link_hash_warning)
4966 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4967 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4968 || rh->root.type == bfd_link_hash_defweak);
4969 val = rh->root.u.def.value;
4970 sec = rh->root.u.def.section;
4972 val += look->r_addend;
4973 if (code_off != NULL)
4975 if (code_sec != NULL)
4977 if (sec != NULL && sec->output_section != NULL)
4978 val += sec->output_section->vma + sec->output_offset;
4987 /* Mark sections containing dynamically referenced symbols. When
4988 building shared libraries, we must assume that any visible symbol is
4992 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
4994 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4995 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
4997 if (eh->elf.root.type == bfd_link_hash_warning)
4998 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5000 /* Dynamic linking info is on the func descriptor sym. */
5002 && eh->oh->is_func_descriptor
5003 && (eh->oh->elf.root.type == bfd_link_hash_defined
5004 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5007 if ((eh->elf.root.type == bfd_link_hash_defined
5008 || eh->elf.root.type == bfd_link_hash_defweak)
5009 && (eh->elf.ref_dynamic
5010 || (!info->executable
5011 && eh->elf.def_regular
5012 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5013 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5017 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5019 /* Function descriptor syms cause the associated
5020 function code sym section to be marked. */
5021 if (eh->is_func_descriptor
5022 && (eh->oh->elf.root.type == bfd_link_hash_defined
5023 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5024 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5025 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5026 && opd_entry_value (eh->elf.root.u.def.section,
5027 eh->elf.root.u.def.value,
5028 &code_sec, NULL) != (bfd_vma) -1)
5029 code_sec->flags |= SEC_KEEP;
5035 /* Return the section that should be marked against GC for a given
5039 ppc64_elf_gc_mark_hook (asection *sec,
5040 struct bfd_link_info *info,
5041 Elf_Internal_Rela *rel,
5042 struct elf_link_hash_entry *h,
5043 Elf_Internal_Sym *sym)
5047 /* First mark all our entry sym sections. */
5048 if (info->gc_sym_list != NULL)
5050 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5051 struct bfd_sym_chain *sym = info->gc_sym_list;
5053 info->gc_sym_list = NULL;
5054 for (; sym != NULL; sym = sym->next)
5056 struct ppc_link_hash_entry *eh;
5058 eh = (struct ppc_link_hash_entry *)
5059 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5062 if (eh->elf.root.type != bfd_link_hash_defined
5063 && eh->elf.root.type != bfd_link_hash_defweak)
5066 if (eh->is_func_descriptor
5067 && (eh->oh->elf.root.type == bfd_link_hash_defined
5068 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5069 rsec = eh->oh->elf.root.u.def.section;
5070 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5071 && opd_entry_value (eh->elf.root.u.def.section,
5072 eh->elf.root.u.def.value,
5073 &rsec, NULL) != (bfd_vma) -1)
5079 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5081 rsec = eh->elf.root.u.def.section;
5083 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5087 /* Syms return NULL if we're marking .opd, so we avoid marking all
5088 function sections, as all functions are referenced in .opd. */
5090 if (get_opd_info (sec) != NULL)
5095 enum elf_ppc64_reloc_type r_type;
5096 struct ppc_link_hash_entry *eh;
5098 r_type = ELF64_R_TYPE (rel->r_info);
5101 case R_PPC64_GNU_VTINHERIT:
5102 case R_PPC64_GNU_VTENTRY:
5106 switch (h->root.type)
5108 case bfd_link_hash_defined:
5109 case bfd_link_hash_defweak:
5110 eh = (struct ppc_link_hash_entry *) h;
5112 && eh->oh->is_func_descriptor
5113 && (eh->oh->elf.root.type == bfd_link_hash_defined
5114 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5117 /* Function descriptor syms cause the associated
5118 function code sym section to be marked. */
5119 if (eh->is_func_descriptor
5120 && (eh->oh->elf.root.type == bfd_link_hash_defined
5121 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5123 /* They also mark their opd section. */
5124 if (!eh->elf.root.u.def.section->gc_mark)
5125 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5126 ppc64_elf_gc_mark_hook);
5128 rsec = eh->oh->elf.root.u.def.section;
5130 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5131 && opd_entry_value (eh->elf.root.u.def.section,
5132 eh->elf.root.u.def.value,
5133 &rsec, NULL) != (bfd_vma) -1)
5135 if (!eh->elf.root.u.def.section->gc_mark)
5136 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5137 ppc64_elf_gc_mark_hook);
5140 rsec = h->root.u.def.section;
5143 case bfd_link_hash_common:
5144 rsec = h->root.u.c.p->section;
5154 asection **opd_sym_section;
5156 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5157 opd_sym_section = get_opd_info (rsec);
5158 if (opd_sym_section != NULL)
5161 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5163 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
5170 /* Update the .got, .plt. and dynamic reloc reference counts for the
5171 section being removed. */
5174 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5175 asection *sec, const Elf_Internal_Rela *relocs)
5177 struct ppc_link_hash_table *htab;
5178 Elf_Internal_Shdr *symtab_hdr;
5179 struct elf_link_hash_entry **sym_hashes;
5180 struct got_entry **local_got_ents;
5181 const Elf_Internal_Rela *rel, *relend;
5183 if ((sec->flags & SEC_ALLOC) == 0)
5186 elf_section_data (sec)->local_dynrel = NULL;
5188 htab = ppc_hash_table (info);
5189 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5190 sym_hashes = elf_sym_hashes (abfd);
5191 local_got_ents = elf_local_got_ents (abfd);
5193 relend = relocs + sec->reloc_count;
5194 for (rel = relocs; rel < relend; rel++)
5196 unsigned long r_symndx;
5197 enum elf_ppc64_reloc_type r_type;
5198 struct elf_link_hash_entry *h = NULL;
5201 r_symndx = ELF64_R_SYM (rel->r_info);
5202 r_type = ELF64_R_TYPE (rel->r_info);
5203 if (r_symndx >= symtab_hdr->sh_info)
5205 struct ppc_link_hash_entry *eh;
5206 struct ppc_dyn_relocs **pp;
5207 struct ppc_dyn_relocs *p;
5209 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5210 while (h->root.type == bfd_link_hash_indirect
5211 || h->root.type == bfd_link_hash_warning)
5212 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5213 eh = (struct ppc_link_hash_entry *) h;
5215 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5218 /* Everything must go for SEC. */
5226 case R_PPC64_GOT_TLSLD16:
5227 case R_PPC64_GOT_TLSLD16_LO:
5228 case R_PPC64_GOT_TLSLD16_HI:
5229 case R_PPC64_GOT_TLSLD16_HA:
5230 ppc64_tlsld_got (abfd)->refcount -= 1;
5231 tls_type = TLS_TLS | TLS_LD;
5234 case R_PPC64_GOT_TLSGD16:
5235 case R_PPC64_GOT_TLSGD16_LO:
5236 case R_PPC64_GOT_TLSGD16_HI:
5237 case R_PPC64_GOT_TLSGD16_HA:
5238 tls_type = TLS_TLS | TLS_GD;
5241 case R_PPC64_GOT_TPREL16_DS:
5242 case R_PPC64_GOT_TPREL16_LO_DS:
5243 case R_PPC64_GOT_TPREL16_HI:
5244 case R_PPC64_GOT_TPREL16_HA:
5245 tls_type = TLS_TLS | TLS_TPREL;
5248 case R_PPC64_GOT_DTPREL16_DS:
5249 case R_PPC64_GOT_DTPREL16_LO_DS:
5250 case R_PPC64_GOT_DTPREL16_HI:
5251 case R_PPC64_GOT_DTPREL16_HA:
5252 tls_type = TLS_TLS | TLS_DTPREL;
5256 case R_PPC64_GOT16_DS:
5257 case R_PPC64_GOT16_HA:
5258 case R_PPC64_GOT16_HI:
5259 case R_PPC64_GOT16_LO:
5260 case R_PPC64_GOT16_LO_DS:
5263 struct got_entry *ent;
5268 ent = local_got_ents[r_symndx];
5270 for (; ent != NULL; ent = ent->next)
5271 if (ent->addend == rel->r_addend
5272 && ent->owner == abfd
5273 && ent->tls_type == tls_type)
5277 if (ent->got.refcount > 0)
5278 ent->got.refcount -= 1;
5282 case R_PPC64_PLT16_HA:
5283 case R_PPC64_PLT16_HI:
5284 case R_PPC64_PLT16_LO:
5288 case R_PPC64_REL14_BRNTAKEN:
5289 case R_PPC64_REL14_BRTAKEN:
5293 struct plt_entry *ent;
5295 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5296 if (ent->addend == rel->r_addend)
5300 if (ent->plt.refcount > 0)
5301 ent->plt.refcount -= 1;
5312 /* The maximum size of .sfpr. */
5313 #define SFPR_MAX (218*4)
5315 struct sfpr_def_parms
5317 const char name[12];
5318 unsigned char lo, hi;
5319 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5320 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5323 /* Auto-generate _save*, _rest* functions in .sfpr. */
5326 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5328 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5330 size_t len = strlen (parm->name);
5331 bfd_boolean writing = FALSE;
5334 memcpy (sym, parm->name, len);
5337 for (i = parm->lo; i <= parm->hi; i++)
5339 struct elf_link_hash_entry *h;
5341 sym[len + 0] = i / 10 + '0';
5342 sym[len + 1] = i % 10 + '0';
5343 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5347 h->root.type = bfd_link_hash_defined;
5348 h->root.u.def.section = htab->sfpr;
5349 h->root.u.def.value = htab->sfpr->size;
5352 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5354 if (htab->sfpr->contents == NULL)
5356 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5357 if (htab->sfpr->contents == NULL)
5363 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5365 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5367 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5368 htab->sfpr->size = p - htab->sfpr->contents;
5376 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5378 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5383 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5385 p = savegpr0 (abfd, p, r);
5386 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5388 bfd_put_32 (abfd, BLR, p);
5393 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5395 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5400 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5402 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5404 p = restgpr0 (abfd, p, r);
5405 bfd_put_32 (abfd, MTLR_R0, p);
5409 p = restgpr0 (abfd, p, 30);
5410 p = restgpr0 (abfd, p, 31);
5412 bfd_put_32 (abfd, BLR, p);
5417 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5419 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5424 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5426 p = savegpr1 (abfd, p, r);
5427 bfd_put_32 (abfd, BLR, p);
5432 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5434 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5439 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5441 p = restgpr1 (abfd, p, r);
5442 bfd_put_32 (abfd, BLR, p);
5447 savefpr (bfd *abfd, bfd_byte *p, int r)
5449 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5454 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5456 p = savefpr (abfd, p, r);
5457 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5459 bfd_put_32 (abfd, BLR, p);
5464 restfpr (bfd *abfd, bfd_byte *p, int r)
5466 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5471 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5473 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5475 p = restfpr (abfd, p, r);
5476 bfd_put_32 (abfd, MTLR_R0, p);
5480 p = restfpr (abfd, p, 30);
5481 p = restfpr (abfd, p, 31);
5483 bfd_put_32 (abfd, BLR, p);
5488 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5490 p = savefpr (abfd, p, r);
5491 bfd_put_32 (abfd, BLR, p);
5496 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5498 p = restfpr (abfd, p, r);
5499 bfd_put_32 (abfd, BLR, p);
5504 savevr (bfd *abfd, bfd_byte *p, int r)
5506 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5508 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5513 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5515 p = savevr (abfd, p, r);
5516 bfd_put_32 (abfd, BLR, p);
5521 restvr (bfd *abfd, bfd_byte *p, int r)
5523 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5525 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5530 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5532 p = restvr (abfd, p, r);
5533 bfd_put_32 (abfd, BLR, p);
5537 /* Called via elf_link_hash_traverse to transfer dynamic linking
5538 information on function code symbol entries to their corresponding
5539 function descriptor symbol entries. */
5542 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5544 struct bfd_link_info *info;
5545 struct ppc_link_hash_table *htab;
5546 struct plt_entry *ent;
5547 struct ppc_link_hash_entry *fh;
5548 struct ppc_link_hash_entry *fdh;
5549 bfd_boolean force_local;
5551 fh = (struct ppc_link_hash_entry *) h;
5552 if (fh->elf.root.type == bfd_link_hash_indirect)
5555 if (fh->elf.root.type == bfd_link_hash_warning)
5556 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5559 htab = ppc_hash_table (info);
5561 /* Resolve undefined references to dot-symbols as the value
5562 in the function descriptor, if we have one in a regular object.
5563 This is to satisfy cases like ".quad .foo". Calls to functions
5564 in dynamic objects are handled elsewhere. */
5565 if (fh->elf.root.type == bfd_link_hash_undefweak
5566 && fh->was_undefined
5567 && (fh->oh->elf.root.type == bfd_link_hash_defined
5568 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5569 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5570 && opd_entry_value (fh->oh->elf.root.u.def.section,
5571 fh->oh->elf.root.u.def.value,
5572 &fh->elf.root.u.def.section,
5573 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5575 fh->elf.root.type = fh->oh->elf.root.type;
5576 fh->elf.forced_local = 1;
5579 /* If this is a function code symbol, transfer dynamic linking
5580 information to the function descriptor symbol. */
5584 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5585 if (ent->plt.refcount > 0)
5588 || fh->elf.root.root.string[0] != '.'
5589 || fh->elf.root.root.string[1] == '\0')
5592 /* Find the corresponding function descriptor symbol. Create it
5593 as undefined if necessary. */
5595 fdh = get_fdh (fh, htab);
5597 while (fdh->elf.root.type == bfd_link_hash_indirect
5598 || fdh->elf.root.type == bfd_link_hash_warning)
5599 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5603 && (fh->elf.root.type == bfd_link_hash_undefined
5604 || fh->elf.root.type == bfd_link_hash_undefweak))
5606 fdh = make_fdh (info, fh);
5611 /* Fake function descriptors are made undefweak. If the function
5612 code symbol is strong undefined, make the fake sym the same.
5613 If the function code symbol is defined, then force the fake
5614 descriptor local; We can't support overriding of symbols in a
5615 shared library on a fake descriptor. */
5619 && fdh->elf.root.type == bfd_link_hash_undefweak)
5621 if (fh->elf.root.type == bfd_link_hash_undefined)
5623 fdh->elf.root.type = bfd_link_hash_undefined;
5624 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5626 else if (fh->elf.root.type == bfd_link_hash_defined
5627 || fh->elf.root.type == bfd_link_hash_defweak)
5629 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5634 && !fdh->elf.forced_local
5636 || fdh->elf.def_dynamic
5637 || fdh->elf.ref_dynamic
5638 || (fdh->elf.root.type == bfd_link_hash_undefweak
5639 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5641 if (fdh->elf.dynindx == -1)
5642 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5644 fdh->elf.ref_regular |= fh->elf.ref_regular;
5645 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5646 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5647 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
5648 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5650 move_plt_plist (fh, fdh);
5651 fdh->elf.needs_plt = 1;
5653 fdh->is_func_descriptor = 1;
5658 /* Now that the info is on the function descriptor, clear the
5659 function code sym info. Any function code syms for which we
5660 don't have a definition in a regular file, we force local.
5661 This prevents a shared library from exporting syms that have
5662 been imported from another library. Function code syms that
5663 are really in the library we must leave global to prevent the
5664 linker dragging in a definition from a static library. */
5665 force_local = (!fh->elf.def_regular
5667 || !fdh->elf.def_regular
5668 || fdh->elf.forced_local);
5669 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5674 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5675 this hook to a) provide some gcc support functions, and b) transfer
5676 dynamic linking information gathered so far on function code symbol
5677 entries, to their corresponding function descriptor symbol entries. */
5680 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5681 struct bfd_link_info *info)
5683 struct ppc_link_hash_table *htab;
5685 const struct sfpr_def_parms funcs[] =
5687 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5688 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5689 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5690 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5691 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5692 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5693 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5694 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5695 { "._savef", 14, 31, savefpr, savefpr1_tail },
5696 { "._restf", 14, 31, restfpr, restfpr1_tail },
5697 { "_savevr_", 20, 31, savevr, savevr_tail },
5698 { "_restvr_", 20, 31, restvr, restvr_tail }
5701 htab = ppc_hash_table (info);
5702 if (htab->sfpr == NULL)
5703 /* We don't have any relocs. */
5706 /* Provide any missing _save* and _rest* functions. */
5707 htab->sfpr->size = 0;
5708 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5709 if (!sfpr_define (info, &funcs[i]))
5712 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5714 if (htab->sfpr->size == 0)
5715 htab->sfpr->flags |= SEC_EXCLUDE;
5720 /* Adjust a symbol defined by a dynamic object and referenced by a
5721 regular object. The current definition is in some section of the
5722 dynamic object, but we're not including those sections. We have to
5723 change the definition to something the rest of the link can
5727 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5728 struct elf_link_hash_entry *h)
5730 struct ppc_link_hash_table *htab;
5732 unsigned int power_of_two;
5734 htab = ppc_hash_table (info);
5736 /* Deal with function syms. */
5737 if (h->type == STT_FUNC
5740 /* Clear procedure linkage table information for any symbol that
5741 won't need a .plt entry. */
5742 struct plt_entry *ent;
5743 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5744 if (ent->plt.refcount > 0)
5747 || SYMBOL_CALLS_LOCAL (info, h)
5748 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5749 && h->root.type == bfd_link_hash_undefweak))
5751 h->plt.plist = NULL;
5756 h->plt.plist = NULL;
5758 /* If this is a weak symbol, and there is a real definition, the
5759 processor independent code will have arranged for us to see the
5760 real definition first, and we can just use the same value. */
5761 if (h->u.weakdef != NULL)
5763 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5764 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5765 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5766 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5767 if (ELIMINATE_COPY_RELOCS)
5768 h->non_got_ref = h->u.weakdef->non_got_ref;
5772 /* If we are creating a shared library, we must presume that the
5773 only references to the symbol are via the global offset table.
5774 For such cases we need not do anything here; the relocations will
5775 be handled correctly by relocate_section. */
5779 /* If there are no references to this symbol that do not use the
5780 GOT, we don't need to generate a copy reloc. */
5781 if (!h->non_got_ref)
5784 if (ELIMINATE_COPY_RELOCS)
5786 struct ppc_link_hash_entry * eh;
5787 struct ppc_dyn_relocs *p;
5789 eh = (struct ppc_link_hash_entry *) h;
5790 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5792 s = p->sec->output_section;
5793 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5797 /* If we didn't find any dynamic relocs in read-only sections, then
5798 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5806 if (h->plt.plist != NULL)
5808 /* We should never get here, but unfortunately there are versions
5809 of gcc out there that improperly (for this ABI) put initialized
5810 function pointers, vtable refs and suchlike in read-only
5811 sections. Allow them to proceed, but warn that this might
5812 break at runtime. */
5813 (*_bfd_error_handler)
5814 (_("copy reloc against `%s' requires lazy plt linking; "
5815 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5816 h->root.root.string);
5819 /* This is a reference to a symbol defined by a dynamic object which
5820 is not a function. */
5824 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5825 h->root.root.string);
5829 /* We must allocate the symbol in our .dynbss section, which will
5830 become part of the .bss section of the executable. There will be
5831 an entry for this symbol in the .dynsym section. The dynamic
5832 object will contain position independent code, so all references
5833 from the dynamic object to this symbol will go through the global
5834 offset table. The dynamic linker will use the .dynsym entry to
5835 determine the address it must put in the global offset table, so
5836 both the dynamic object and the regular object will refer to the
5837 same memory location for the variable. */
5839 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5840 to copy the initial value out of the dynamic object and into the
5841 runtime process image. We need to remember the offset into the
5842 .rela.bss section we are going to use. */
5843 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5845 htab->relbss->size += sizeof (Elf64_External_Rela);
5849 /* We need to figure out the alignment required for this symbol. I
5850 have no idea how ELF linkers handle this. */
5851 power_of_two = bfd_log2 (h->size);
5852 if (power_of_two > 4)
5855 /* Apply the required alignment. */
5857 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5858 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5860 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5864 /* Define the symbol as being at this point in the section. */
5865 h->root.u.def.section = s;
5866 h->root.u.def.value = s->size;
5868 /* Increment the section size to make room for the symbol. */
5874 /* If given a function descriptor symbol, hide both the function code
5875 sym and the descriptor. */
5877 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5878 struct elf_link_hash_entry *h,
5879 bfd_boolean force_local)
5881 struct ppc_link_hash_entry *eh;
5882 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5884 eh = (struct ppc_link_hash_entry *) h;
5885 if (eh->is_func_descriptor)
5887 struct ppc_link_hash_entry *fh = eh->oh;
5892 struct ppc_link_hash_table *htab;
5895 /* We aren't supposed to use alloca in BFD because on
5896 systems which do not have alloca the version in libiberty
5897 calls xmalloc, which might cause the program to crash
5898 when it runs out of memory. This function doesn't have a
5899 return status, so there's no way to gracefully return an
5900 error. So cheat. We know that string[-1] can be safely
5901 accessed; It's either a string in an ELF string table,
5902 or allocated in an objalloc structure. */
5904 p = eh->elf.root.root.string - 1;
5907 htab = ppc_hash_table (info);
5908 fh = (struct ppc_link_hash_entry *)
5909 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5912 /* Unfortunately, if it so happens that the string we were
5913 looking for was allocated immediately before this string,
5914 then we overwrote the string terminator. That's the only
5915 reason the lookup should fail. */
5918 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5919 while (q >= eh->elf.root.root.string && *q == *p)
5921 if (q < eh->elf.root.root.string && *p == '.')
5922 fh = (struct ppc_link_hash_entry *)
5923 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5932 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5937 get_sym_h (struct elf_link_hash_entry **hp,
5938 Elf_Internal_Sym **symp,
5941 Elf_Internal_Sym **locsymsp,
5942 unsigned long r_symndx,
5945 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5947 if (r_symndx >= symtab_hdr->sh_info)
5949 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5950 struct elf_link_hash_entry *h;
5952 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5953 while (h->root.type == bfd_link_hash_indirect
5954 || h->root.type == bfd_link_hash_warning)
5955 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5963 if (symsecp != NULL)
5965 asection *symsec = NULL;
5966 if (h->root.type == bfd_link_hash_defined
5967 || h->root.type == bfd_link_hash_defweak)
5968 symsec = h->root.u.def.section;
5972 if (tls_maskp != NULL)
5974 struct ppc_link_hash_entry *eh;
5976 eh = (struct ppc_link_hash_entry *) h;
5977 *tls_maskp = &eh->tls_mask;
5982 Elf_Internal_Sym *sym;
5983 Elf_Internal_Sym *locsyms = *locsymsp;
5985 if (locsyms == NULL)
5987 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5988 if (locsyms == NULL)
5989 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5990 symtab_hdr->sh_info,
5991 0, NULL, NULL, NULL);
5992 if (locsyms == NULL)
5994 *locsymsp = locsyms;
5996 sym = locsyms + r_symndx;
6004 if (symsecp != NULL)
6006 asection *symsec = NULL;
6007 if ((sym->st_shndx != SHN_UNDEF
6008 && sym->st_shndx < SHN_LORESERVE)
6009 || sym->st_shndx > SHN_HIRESERVE)
6010 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6014 if (tls_maskp != NULL)
6016 struct got_entry **lgot_ents;
6020 lgot_ents = elf_local_got_ents (ibfd);
6021 if (lgot_ents != NULL)
6023 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6024 tls_mask = &lgot_masks[r_symndx];
6026 *tls_maskp = tls_mask;
6032 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6033 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6034 type suitable for optimization, and 1 otherwise. */
6037 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6038 Elf_Internal_Sym **locsymsp,
6039 const Elf_Internal_Rela *rel, bfd *ibfd)
6041 unsigned long r_symndx;
6043 struct elf_link_hash_entry *h;
6044 Elf_Internal_Sym *sym;
6048 r_symndx = ELF64_R_SYM (rel->r_info);
6049 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6052 if ((*tls_maskp != NULL && **tls_maskp != 0)
6054 || ppc64_elf_section_data (sec)->t_symndx == NULL)
6057 /* Look inside a TOC section too. */
6060 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6061 off = h->root.u.def.value;
6064 off = sym->st_value;
6065 off += rel->r_addend;
6066 BFD_ASSERT (off % 8 == 0);
6067 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
6068 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
6069 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6071 if (toc_symndx != NULL)
6072 *toc_symndx = r_symndx;
6074 || ((h->root.type == bfd_link_hash_defined
6075 || h->root.type == bfd_link_hash_defweak)
6076 && !h->def_dynamic))
6077 && (next_r == -1 || next_r == -2))
6082 /* Adjust all global syms defined in opd sections. In gcc generated
6083 code for the old ABI, these will already have been done. */
6086 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6088 struct ppc_link_hash_entry *eh;
6092 if (h->root.type == bfd_link_hash_indirect)
6095 if (h->root.type == bfd_link_hash_warning)
6096 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6098 if (h->root.type != bfd_link_hash_defined
6099 && h->root.type != bfd_link_hash_defweak)
6102 eh = (struct ppc_link_hash_entry *) h;
6103 if (eh->adjust_done)
6106 sym_sec = eh->elf.root.u.def.section;
6107 opd_adjust = get_opd_info (sym_sec);
6108 if (opd_adjust != NULL)
6110 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
6113 /* This entry has been deleted. */
6114 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6117 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6118 if (elf_discarded_section (dsec))
6120 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6124 eh->elf.root.u.def.value = 0;
6125 eh->elf.root.u.def.section = dsec;
6128 eh->elf.root.u.def.value += adjust;
6129 eh->adjust_done = 1;
6134 /* Handles decrementing dynamic reloc counts for the reloc specified by
6135 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6136 have already been determined. */
6139 dec_dynrel_count (bfd_vma r_info,
6141 struct bfd_link_info *info,
6142 Elf_Internal_Sym **local_syms,
6143 struct elf_link_hash_entry *h,
6146 enum elf_ppc64_reloc_type r_type;
6147 struct ppc_dyn_relocs *p;
6148 struct ppc_dyn_relocs **pp;
6150 /* Can this reloc be dynamic? This switch, and later tests here
6151 should be kept in sync with the code in check_relocs. */
6152 r_type = ELF64_R_TYPE (r_info);
6158 case R_PPC64_TPREL16:
6159 case R_PPC64_TPREL16_LO:
6160 case R_PPC64_TPREL16_HI:
6161 case R_PPC64_TPREL16_HA:
6162 case R_PPC64_TPREL16_DS:
6163 case R_PPC64_TPREL16_LO_DS:
6164 case R_PPC64_TPREL16_HIGHER:
6165 case R_PPC64_TPREL16_HIGHERA:
6166 case R_PPC64_TPREL16_HIGHEST:
6167 case R_PPC64_TPREL16_HIGHESTA:
6171 case R_PPC64_TPREL64:
6172 case R_PPC64_DTPMOD64:
6173 case R_PPC64_DTPREL64:
6174 case R_PPC64_ADDR64:
6178 case R_PPC64_ADDR14:
6179 case R_PPC64_ADDR14_BRNTAKEN:
6180 case R_PPC64_ADDR14_BRTAKEN:
6181 case R_PPC64_ADDR16:
6182 case R_PPC64_ADDR16_DS:
6183 case R_PPC64_ADDR16_HA:
6184 case R_PPC64_ADDR16_HI:
6185 case R_PPC64_ADDR16_HIGHER:
6186 case R_PPC64_ADDR16_HIGHERA:
6187 case R_PPC64_ADDR16_HIGHEST:
6188 case R_PPC64_ADDR16_HIGHESTA:
6189 case R_PPC64_ADDR16_LO:
6190 case R_PPC64_ADDR16_LO_DS:
6191 case R_PPC64_ADDR24:
6192 case R_PPC64_ADDR32:
6193 case R_PPC64_UADDR16:
6194 case R_PPC64_UADDR32:
6195 case R_PPC64_UADDR64:
6200 if (local_syms != NULL)
6202 unsigned long r_symndx;
6203 Elf_Internal_Sym *sym;
6204 bfd *ibfd = sec->owner;
6206 r_symndx = ELF64_R_SYM (r_info);
6207 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6212 && (MUST_BE_DYN_RELOC (r_type)
6215 || h->root.type == bfd_link_hash_defweak
6216 || !h->def_regular))))
6217 || (ELIMINATE_COPY_RELOCS
6220 && (h->root.type == bfd_link_hash_defweak
6221 || !h->def_regular)))
6227 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6230 if (sym_sec != NULL)
6232 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6233 pp = (struct ppc_dyn_relocs **) vpp;
6237 void *vpp = &elf_section_data (sec)->local_dynrel;
6238 pp = (struct ppc_dyn_relocs **) vpp;
6241 /* elf_gc_sweep may have already removed all dyn relocs associated
6242 with local syms for a given section. Don't report a dynreloc
6248 while ((p = *pp) != NULL)
6252 if (!MUST_BE_DYN_RELOC (r_type))
6262 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6264 bfd_set_error (bfd_error_bad_value);
6268 /* Remove unused Official Procedure Descriptor entries. Currently we
6269 only remove those associated with functions in discarded link-once
6270 sections, or weakly defined functions that have been overridden. It
6271 would be possible to remove many more entries for statically linked
6275 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6276 bfd_boolean no_opd_opt,
6277 bfd_boolean non_overlapping)
6280 bfd_boolean some_edited = FALSE;
6281 asection *need_pad = NULL;
6283 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6286 Elf_Internal_Rela *relstart, *rel, *relend;
6287 Elf_Internal_Shdr *symtab_hdr;
6288 Elf_Internal_Sym *local_syms;
6289 struct elf_link_hash_entry **sym_hashes;
6293 bfd_boolean need_edit, add_aux_fields;
6294 bfd_size_type cnt_16b = 0;
6296 sec = bfd_get_section_by_name (ibfd, ".opd");
6297 if (sec == NULL || sec->size == 0)
6300 amt = sec->size * sizeof (long) / 8;
6301 opd_adjust = get_opd_info (sec);
6302 if (opd_adjust == NULL)
6304 /* check_relocs hasn't been called. Must be a ld -r link
6305 or --just-symbols object. */
6306 opd_adjust = bfd_alloc (obfd, amt);
6307 if (opd_adjust == NULL)
6309 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
6311 memset (opd_adjust, 0, amt);
6316 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6319 if (sec->output_section == bfd_abs_section_ptr)
6322 /* Look through the section relocs. */
6323 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6327 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6328 sym_hashes = elf_sym_hashes (ibfd);
6330 /* Read the relocations. */
6331 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6333 if (relstart == NULL)
6336 /* First run through the relocs to check they are sane, and to
6337 determine whether we need to edit this opd section. */
6341 relend = relstart + sec->reloc_count;
6342 for (rel = relstart; rel < relend; )
6344 enum elf_ppc64_reloc_type r_type;
6345 unsigned long r_symndx;
6347 struct elf_link_hash_entry *h;
6348 Elf_Internal_Sym *sym;
6350 /* .opd contains a regular array of 16 or 24 byte entries. We're
6351 only interested in the reloc pointing to a function entry
6353 if (rel->r_offset != offset
6354 || rel + 1 >= relend
6355 || (rel + 1)->r_offset != offset + 8)
6357 /* If someone messes with .opd alignment then after a
6358 "ld -r" we might have padding in the middle of .opd.
6359 Also, there's nothing to prevent someone putting
6360 something silly in .opd with the assembler. No .opd
6361 optimization for them! */
6363 (*_bfd_error_handler)
6364 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6369 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6370 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6372 (*_bfd_error_handler)
6373 (_("%B: unexpected reloc type %u in .opd section"),
6379 r_symndx = ELF64_R_SYM (rel->r_info);
6380 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6384 if (sym_sec == NULL || sym_sec->owner == NULL)
6386 const char *sym_name;
6388 sym_name = h->root.root.string;
6390 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6393 (*_bfd_error_handler)
6394 (_("%B: undefined sym `%s' in .opd section"),
6400 /* opd entries are always for functions defined in the
6401 current input bfd. If the symbol isn't defined in the
6402 input bfd, then we won't be using the function in this
6403 bfd; It must be defined in a linkonce section in another
6404 bfd, or is weak. It's also possible that we are
6405 discarding the function due to a linker script /DISCARD/,
6406 which we test for via the output_section. */
6407 if (sym_sec->owner != ibfd
6408 || sym_sec->output_section == bfd_abs_section_ptr)
6413 || (rel + 1 == relend && rel->r_offset == offset + 16))
6415 if (sec->size == offset + 24)
6420 if (rel == relend && sec->size == offset + 16)
6428 if (rel->r_offset == offset + 24)
6430 else if (rel->r_offset != offset + 16)
6432 else if (rel + 1 < relend
6433 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6434 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6439 else if (rel + 2 < relend
6440 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6441 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6450 add_aux_fields = non_overlapping && cnt_16b > 0;
6452 if (need_edit || add_aux_fields)
6454 Elf_Internal_Rela *write_rel;
6455 bfd_byte *rptr, *wptr;
6456 bfd_byte *new_contents = NULL;
6460 /* This seems a waste of time as input .opd sections are all
6461 zeros as generated by gcc, but I suppose there's no reason
6462 this will always be so. We might start putting something in
6463 the third word of .opd entries. */
6464 if ((sec->flags & SEC_IN_MEMORY) == 0)
6467 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6472 if (local_syms != NULL
6473 && symtab_hdr->contents != (unsigned char *) local_syms)
6475 if (elf_section_data (sec)->relocs != relstart)
6479 sec->contents = loc;
6480 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6483 elf_section_data (sec)->relocs = relstart;
6485 new_contents = sec->contents;
6488 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6489 if (new_contents == NULL)
6493 wptr = new_contents;
6494 rptr = sec->contents;
6496 write_rel = relstart;
6500 for (rel = relstart; rel < relend; rel++)
6502 unsigned long r_symndx;
6504 struct elf_link_hash_entry *h;
6505 Elf_Internal_Sym *sym;
6507 r_symndx = ELF64_R_SYM (rel->r_info);
6508 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6512 if (rel->r_offset == offset)
6514 struct ppc_link_hash_entry *fdh = NULL;
6516 /* See if the .opd entry is full 24 byte or
6517 16 byte (with fd_aux entry overlapped with next
6520 if ((rel + 2 == relend && sec->size == offset + 16)
6521 || (rel + 3 < relend
6522 && rel[2].r_offset == offset + 16
6523 && rel[3].r_offset == offset + 24
6524 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6525 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6529 && h->root.root.string[0] == '.')
6531 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6532 ppc_hash_table (info));
6534 && fdh->elf.root.type != bfd_link_hash_defined
6535 && fdh->elf.root.type != bfd_link_hash_defweak)
6539 skip = (sym_sec->owner != ibfd
6540 || sym_sec->output_section == bfd_abs_section_ptr);
6543 if (fdh != NULL && sym_sec->owner == ibfd)
6545 /* Arrange for the function descriptor sym
6547 fdh->elf.root.u.def.value = 0;
6548 fdh->elf.root.u.def.section = sym_sec;
6550 opd_adjust[rel->r_offset / 8] = -1;
6554 /* We'll be keeping this opd entry. */
6558 /* Redefine the function descriptor symbol to
6559 this location in the opd section. It is
6560 necessary to update the value here rather
6561 than using an array of adjustments as we do
6562 for local symbols, because various places
6563 in the generic ELF code use the value
6564 stored in u.def.value. */
6565 fdh->elf.root.u.def.value = wptr - new_contents;
6566 fdh->adjust_done = 1;
6569 /* Local syms are a bit tricky. We could
6570 tweak them as they can be cached, but
6571 we'd need to look through the local syms
6572 for the function descriptor sym which we
6573 don't have at the moment. So keep an
6574 array of adjustments. */
6575 opd_adjust[rel->r_offset / 8]
6576 = (wptr - new_contents) - (rptr - sec->contents);
6579 memcpy (wptr, rptr, opd_ent_size);
6580 wptr += opd_ent_size;
6581 if (add_aux_fields && opd_ent_size == 16)
6583 memset (wptr, '\0', 8);
6587 rptr += opd_ent_size;
6588 offset += opd_ent_size;
6594 && !info->relocatable
6595 && !dec_dynrel_count (rel->r_info, sec, info,
6601 /* We need to adjust any reloc offsets to point to the
6602 new opd entries. While we're at it, we may as well
6603 remove redundant relocs. */
6604 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6605 if (write_rel != rel)
6606 memcpy (write_rel, rel, sizeof (*rel));
6611 sec->size = wptr - new_contents;
6612 sec->reloc_count = write_rel - relstart;
6615 free (sec->contents);
6616 sec->contents = new_contents;
6619 /* Fudge the header size too, as this is used later in
6620 elf_bfd_final_link if we are emitting relocs. */
6621 elf_section_data (sec)->rel_hdr.sh_size
6622 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6623 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6626 else if (elf_section_data (sec)->relocs != relstart)
6629 if (local_syms != NULL
6630 && symtab_hdr->contents != (unsigned char *) local_syms)
6632 if (!info->keep_memory)
6635 symtab_hdr->contents = (unsigned char *) local_syms;
6640 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6642 /* If we are doing a final link and the last .opd entry is just 16 byte
6643 long, add a 8 byte padding after it. */
6644 if (need_pad != NULL && !info->relocatable)
6648 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6650 BFD_ASSERT (need_pad->size > 0);
6652 p = bfd_malloc (need_pad->size + 8);
6656 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6657 p, 0, need_pad->size))
6660 need_pad->contents = p;
6661 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6665 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6669 need_pad->contents = p;
6672 memset (need_pad->contents + need_pad->size, 0, 8);
6673 need_pad->size += 8;
6679 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6682 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6684 struct ppc_link_hash_table *htab;
6686 htab = ppc_hash_table (info);
6687 if (htab->tls_get_addr != NULL)
6689 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6691 while (h->elf.root.type == bfd_link_hash_indirect
6692 || h->elf.root.type == bfd_link_hash_warning)
6693 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6695 htab->tls_get_addr = h;
6697 if (htab->tls_get_addr_fd == NULL
6699 && h->oh->is_func_descriptor
6700 && (h->oh->elf.root.type == bfd_link_hash_defined
6701 || h->oh->elf.root.type == bfd_link_hash_defweak))
6702 htab->tls_get_addr_fd = h->oh;
6705 if (htab->tls_get_addr_fd != NULL)
6707 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6709 while (h->elf.root.type == bfd_link_hash_indirect
6710 || h->elf.root.type == bfd_link_hash_warning)
6711 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6713 htab->tls_get_addr_fd = h;
6716 return _bfd_elf_tls_setup (obfd, info);
6719 /* Run through all the TLS relocs looking for optimization
6720 opportunities. The linker has been hacked (see ppc64elf.em) to do
6721 a preliminary section layout so that we know the TLS segment
6722 offsets. We can't optimize earlier because some optimizations need
6723 to know the tp offset, and we need to optimize before allocating
6724 dynamic relocations. */
6727 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6731 struct ppc_link_hash_table *htab;
6733 if (info->relocatable || info->shared)
6736 htab = ppc_hash_table (info);
6737 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6739 Elf_Internal_Sym *locsyms = NULL;
6740 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6741 unsigned char *toc_ref = NULL;
6743 /* Look at all the sections for this file, with TOC last. */
6744 for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next
6747 sec = (sec == toc ? NULL
6748 : sec->next == NULL ? toc
6749 : sec->next == toc && toc->next ? toc->next
6751 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6753 Elf_Internal_Rela *relstart, *rel, *relend;
6754 int expecting_tls_get_addr;
6755 long toc_ref_index = 0;
6757 /* Read the relocations. */
6758 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6760 if (relstart == NULL)
6763 expecting_tls_get_addr = 0;
6764 relend = relstart + sec->reloc_count;
6765 for (rel = relstart; rel < relend; rel++)
6767 enum elf_ppc64_reloc_type r_type;
6768 unsigned long r_symndx;
6769 struct elf_link_hash_entry *h;
6770 Elf_Internal_Sym *sym;
6773 char tls_set, tls_clear, tls_type = 0;
6775 bfd_boolean ok_tprel, is_local;
6777 r_symndx = ELF64_R_SYM (rel->r_info);
6778 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6782 if (elf_section_data (sec)->relocs != relstart)
6784 if (toc_ref != NULL)
6787 && (elf_tdata (ibfd)->symtab_hdr.contents
6788 != (unsigned char *) locsyms))
6795 if (h->root.type != bfd_link_hash_defined
6796 && h->root.type != bfd_link_hash_defweak)
6798 value = h->root.u.def.value;
6801 /* Symbols referenced by TLS relocs must be of type
6802 STT_TLS. So no need for .opd local sym adjust. */
6803 value = sym->st_value;
6811 value += sym_sec->output_offset;
6812 value += sym_sec->output_section->vma;
6813 value -= htab->elf.tls_sec->vma;
6814 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6815 < (bfd_vma) 1 << 32);
6818 r_type = ELF64_R_TYPE (rel->r_info);
6821 case R_PPC64_GOT_TLSLD16:
6822 case R_PPC64_GOT_TLSLD16_LO:
6823 case R_PPC64_GOT_TLSLD16_HI:
6824 case R_PPC64_GOT_TLSLD16_HA:
6825 /* These relocs should never be against a symbol
6826 defined in a shared lib. Leave them alone if
6827 that turns out to be the case. */
6828 ppc64_tlsld_got (ibfd)->refcount -= 1;
6835 tls_type = TLS_TLS | TLS_LD;
6836 expecting_tls_get_addr = 1;
6839 case R_PPC64_GOT_TLSGD16:
6840 case R_PPC64_GOT_TLSGD16_LO:
6841 case R_PPC64_GOT_TLSGD16_HI:
6842 case R_PPC64_GOT_TLSGD16_HA:
6848 tls_set = TLS_TLS | TLS_TPRELGD;
6850 tls_type = TLS_TLS | TLS_GD;
6851 expecting_tls_get_addr = 1;
6854 case R_PPC64_GOT_TPREL16_DS:
6855 case R_PPC64_GOT_TPREL16_LO_DS:
6856 case R_PPC64_GOT_TPREL16_HI:
6857 case R_PPC64_GOT_TPREL16_HA:
6858 expecting_tls_get_addr = 0;
6863 tls_clear = TLS_TPREL;
6864 tls_type = TLS_TLS | TLS_TPREL;
6871 case R_PPC64_REL14_BRTAKEN:
6872 case R_PPC64_REL14_BRNTAKEN:
6875 && (h == &htab->tls_get_addr->elf
6876 || h == &htab->tls_get_addr_fd->elf))
6878 if (!expecting_tls_get_addr
6880 && ((ELF64_R_TYPE (rel[-1].r_info)
6882 || (ELF64_R_TYPE (rel[-1].r_info)
6883 == R_PPC64_TOC16_LO)))
6885 /* Check for toc tls entries. */
6889 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6893 if (retval > 1 && toc_tls != NULL)
6895 expecting_tls_get_addr = 1;
6896 if (toc_ref != NULL)
6897 toc_ref[toc_ref_index] = 1;
6901 if (expecting_tls_get_addr)
6903 struct plt_entry *ent;
6904 for (ent = h->plt.plist; ent; ent = ent->next)
6905 if (ent->addend == 0)
6907 if (ent->plt.refcount > 0)
6908 ent->plt.refcount -= 1;
6913 expecting_tls_get_addr = 0;
6917 case R_PPC64_TOC16_LO:
6919 expecting_tls_get_addr = 0;
6920 if (sym_sec == toc && toc != NULL)
6922 /* Mark this toc entry as referenced by a TLS
6923 code sequence. We can do that now in the
6924 case of R_PPC64_TLS, and after checking for
6925 tls_get_addr for the TOC16 relocs. */
6926 if (toc_ref == NULL)
6928 toc_ref = bfd_zmalloc (toc->size / 8);
6929 if (toc_ref == NULL)
6933 value = h->root.u.def.value;
6935 value = sym->st_value;
6936 value += rel->r_addend;
6937 BFD_ASSERT (value < toc->size && value % 8 == 0);
6938 toc_ref_index = value / 8;
6939 if (r_type == R_PPC64_TLS)
6940 toc_ref[toc_ref_index] = 1;
6944 case R_PPC64_TPREL64:
6945 expecting_tls_get_addr = 0;
6948 || !toc_ref[rel->r_offset / 8])
6953 tls_set = TLS_EXPLICIT;
6954 tls_clear = TLS_TPREL;
6960 case R_PPC64_DTPMOD64:
6961 expecting_tls_get_addr = 0;
6964 || !toc_ref[rel->r_offset / 8])
6966 if (rel + 1 < relend
6968 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6969 && rel[1].r_offset == rel->r_offset + 8)
6973 tls_set = TLS_EXPLICIT | TLS_GD;
6976 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6985 tls_set = TLS_EXPLICIT;
6991 expecting_tls_get_addr = 0;
6995 if ((tls_set & TLS_EXPLICIT) == 0)
6997 struct got_entry *ent;
6999 /* Adjust got entry for this reloc. */
7003 ent = elf_local_got_ents (ibfd)[r_symndx];
7005 for (; ent != NULL; ent = ent->next)
7006 if (ent->addend == rel->r_addend
7007 && ent->owner == ibfd
7008 && ent->tls_type == tls_type)
7015 /* We managed to get rid of a got entry. */
7016 if (ent->got.refcount > 0)
7017 ent->got.refcount -= 1;
7022 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7023 we'll lose one or two dyn relocs. */
7024 if (!dec_dynrel_count (rel->r_info, sec, info,
7028 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7030 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7036 *tls_mask |= tls_set;
7037 *tls_mask &= ~tls_clear;
7040 if (elf_section_data (sec)->relocs != relstart)
7044 if (toc_ref != NULL)
7048 && (elf_tdata (ibfd)->symtab_hdr.contents
7049 != (unsigned char *) locsyms))
7051 if (!info->keep_memory)
7054 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
7060 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7061 the values of any global symbols in a toc section that has been
7062 edited. Globals in toc sections should be a rarity, so this function
7063 sets a flag if any are found in toc sections other than the one just
7064 edited, so that futher hash table traversals can be avoided. */
7066 struct adjust_toc_info
7069 unsigned long *skip;
7070 bfd_boolean global_toc_syms;
7074 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7076 struct ppc_link_hash_entry *eh;
7077 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7079 if (h->root.type == bfd_link_hash_indirect)
7082 if (h->root.type == bfd_link_hash_warning)
7083 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7085 if (h->root.type != bfd_link_hash_defined
7086 && h->root.type != bfd_link_hash_defweak)
7089 eh = (struct ppc_link_hash_entry *) h;
7090 if (eh->adjust_done)
7093 if (eh->elf.root.u.def.section == toc_inf->toc)
7095 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7096 if (skip != (unsigned long) -1)
7097 eh->elf.root.u.def.value -= skip;
7100 (*_bfd_error_handler)
7101 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7102 eh->elf.root.u.def.section = &bfd_abs_section;
7103 eh->elf.root.u.def.value = 0;
7105 eh->adjust_done = 1;
7107 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7108 toc_inf->global_toc_syms = TRUE;
7113 /* Examine all relocs referencing .toc sections in order to remove
7114 unused .toc entries. */
7117 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7120 struct adjust_toc_info toc_inf;
7122 toc_inf.global_toc_syms = TRUE;
7123 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7125 asection *toc, *sec;
7126 Elf_Internal_Shdr *symtab_hdr;
7127 Elf_Internal_Sym *local_syms;
7128 struct elf_link_hash_entry **sym_hashes;
7129 Elf_Internal_Rela *relstart, *rel;
7130 unsigned long *skip, *drop;
7131 unsigned char *used;
7132 unsigned char *keep, last, some_unused;
7134 toc = bfd_get_section_by_name (ibfd, ".toc");
7137 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7138 || elf_discarded_section (toc))
7142 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7143 sym_hashes = elf_sym_hashes (ibfd);
7145 /* Look at sections dropped from the final link. */
7148 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7150 if (sec->reloc_count == 0
7151 || !elf_discarded_section (sec)
7152 || get_opd_info (sec)
7153 || (sec->flags & SEC_ALLOC) == 0
7154 || (sec->flags & SEC_DEBUGGING) != 0)
7157 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7158 if (relstart == NULL)
7161 /* Run through the relocs to see which toc entries might be
7163 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7165 enum elf_ppc64_reloc_type r_type;
7166 unsigned long r_symndx;
7168 struct elf_link_hash_entry *h;
7169 Elf_Internal_Sym *sym;
7172 r_type = ELF64_R_TYPE (rel->r_info);
7179 case R_PPC64_TOC16_LO:
7180 case R_PPC64_TOC16_HI:
7181 case R_PPC64_TOC16_HA:
7182 case R_PPC64_TOC16_DS:
7183 case R_PPC64_TOC16_LO_DS:
7187 r_symndx = ELF64_R_SYM (rel->r_info);
7188 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7196 val = h->root.u.def.value;
7198 val = sym->st_value;
7199 val += rel->r_addend;
7201 if (val >= toc->size)
7204 /* Anything in the toc ought to be aligned to 8 bytes.
7205 If not, don't mark as unused. */
7211 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7219 if (elf_section_data (sec)->relocs != relstart)
7226 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7230 if (local_syms != NULL
7231 && symtab_hdr->contents != (unsigned char *) local_syms)
7235 && elf_section_data (sec)->relocs != relstart)
7242 /* Now check all kept sections that might reference the toc.
7243 Check the toc itself last. */
7244 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7247 sec = (sec == toc ? NULL
7248 : sec->next == NULL ? toc
7249 : sec->next == toc && toc->next ? toc->next
7254 if (sec->reloc_count == 0
7255 || elf_discarded_section (sec)
7256 || get_opd_info (sec)
7257 || (sec->flags & SEC_ALLOC) == 0
7258 || (sec->flags & SEC_DEBUGGING) != 0)
7261 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7262 if (relstart == NULL)
7265 /* Mark toc entries referenced as used. */
7268 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7270 enum elf_ppc64_reloc_type r_type;
7271 unsigned long r_symndx;
7273 struct elf_link_hash_entry *h;
7274 Elf_Internal_Sym *sym;
7277 r_type = ELF64_R_TYPE (rel->r_info);
7281 case R_PPC64_TOC16_LO:
7282 case R_PPC64_TOC16_HI:
7283 case R_PPC64_TOC16_HA:
7284 case R_PPC64_TOC16_DS:
7285 case R_PPC64_TOC16_LO_DS:
7286 /* In case we're taking addresses of toc entries. */
7287 case R_PPC64_ADDR64:
7294 r_symndx = ELF64_R_SYM (rel->r_info);
7295 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7306 val = h->root.u.def.value;
7308 val = sym->st_value;
7309 val += rel->r_addend;
7311 if (val >= toc->size)
7314 /* For the toc section, we only mark as used if
7315 this entry itself isn't unused. */
7318 && (used[rel->r_offset >> 3]
7319 || !skip[rel->r_offset >> 3]))
7320 /* Do all the relocs again, to catch reference
7329 /* Merge the used and skip arrays. Assume that TOC
7330 doublewords not appearing as either used or unused belong
7331 to to an entry more than one doubleword in size. */
7332 for (drop = skip, keep = used, last = 0, some_unused = 0;
7333 drop < skip + (toc->size + 7) / 8;
7354 bfd_byte *contents, *src;
7357 /* Shuffle the toc contents, and at the same time convert the
7358 skip array from booleans into offsets. */
7359 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7362 elf_section_data (toc)->this_hdr.contents = contents;
7364 for (src = contents, off = 0, drop = skip;
7365 src < contents + toc->size;
7370 *drop = (unsigned long) -1;
7376 memcpy (src - off, src, 8);
7379 toc->rawsize = toc->size;
7380 toc->size = src - contents - off;
7382 if (toc->reloc_count != 0)
7384 Elf_Internal_Rela *wrel;
7387 /* Read toc relocs. */
7388 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7390 if (relstart == NULL)
7393 /* Remove unused toc relocs, and adjust those we keep. */
7395 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7396 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7398 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7399 wrel->r_info = rel->r_info;
7400 wrel->r_addend = rel->r_addend;
7403 else if (!dec_dynrel_count (rel->r_info, toc, info,
7404 &local_syms, NULL, NULL))
7407 toc->reloc_count = wrel - relstart;
7408 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7409 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7410 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7413 /* Adjust addends for relocs against the toc section sym. */
7414 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7416 if (sec->reloc_count == 0
7417 || elf_discarded_section (sec))
7420 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7422 if (relstart == NULL)
7425 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7427 enum elf_ppc64_reloc_type r_type;
7428 unsigned long r_symndx;
7430 struct elf_link_hash_entry *h;
7431 Elf_Internal_Sym *sym;
7433 r_type = ELF64_R_TYPE (rel->r_info);
7440 case R_PPC64_TOC16_LO:
7441 case R_PPC64_TOC16_HI:
7442 case R_PPC64_TOC16_HA:
7443 case R_PPC64_TOC16_DS:
7444 case R_PPC64_TOC16_LO_DS:
7445 case R_PPC64_ADDR64:
7449 r_symndx = ELF64_R_SYM (rel->r_info);
7450 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7454 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7457 rel->r_addend -= skip[rel->r_addend >> 3];
7461 /* We shouldn't have local or global symbols defined in the TOC,
7462 but handle them anyway. */
7463 if (local_syms != NULL)
7465 Elf_Internal_Sym *sym;
7467 for (sym = local_syms;
7468 sym < local_syms + symtab_hdr->sh_info;
7470 if (sym->st_shndx != SHN_UNDEF
7471 && (sym->st_shndx < SHN_LORESERVE
7472 || sym->st_shndx > SHN_HIRESERVE)
7473 && sym->st_value != 0
7474 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7476 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7477 sym->st_value -= skip[sym->st_value >> 3];
7480 (*_bfd_error_handler)
7481 (_("%s defined in removed toc entry"),
7482 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7485 sym->st_shndx = SHN_ABS;
7487 symtab_hdr->contents = (unsigned char *) local_syms;
7491 /* Finally, adjust any global syms defined in the toc. */
7492 if (toc_inf.global_toc_syms)
7495 toc_inf.skip = skip;
7496 toc_inf.global_toc_syms = FALSE;
7497 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7502 if (local_syms != NULL
7503 && symtab_hdr->contents != (unsigned char *) local_syms)
7505 if (!info->keep_memory)
7508 symtab_hdr->contents = (unsigned char *) local_syms;
7516 /* Allocate space in .plt, .got and associated reloc sections for
7520 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7522 struct bfd_link_info *info;
7523 struct ppc_link_hash_table *htab;
7525 struct ppc_link_hash_entry *eh;
7526 struct ppc_dyn_relocs *p;
7527 struct got_entry *gent;
7529 if (h->root.type == bfd_link_hash_indirect)
7532 if (h->root.type == bfd_link_hash_warning)
7533 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7535 info = (struct bfd_link_info *) inf;
7536 htab = ppc_hash_table (info);
7538 if (htab->elf.dynamic_sections_created
7540 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
7542 struct plt_entry *pent;
7543 bfd_boolean doneone = FALSE;
7544 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7545 if (pent->plt.refcount > 0)
7547 /* If this is the first .plt entry, make room for the special
7551 s->size += PLT_INITIAL_ENTRY_SIZE;
7553 pent->plt.offset = s->size;
7555 /* Make room for this entry. */
7556 s->size += PLT_ENTRY_SIZE;
7558 /* Make room for the .glink code. */
7561 s->size += GLINK_CALL_STUB_SIZE;
7562 /* We need bigger stubs past index 32767. */
7563 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7567 /* We also need to make an entry in the .rela.plt section. */
7569 s->size += sizeof (Elf64_External_Rela);
7573 pent->plt.offset = (bfd_vma) -1;
7576 h->plt.plist = NULL;
7582 h->plt.plist = NULL;
7586 eh = (struct ppc_link_hash_entry *) h;
7587 /* Run through the TLS GD got entries first if we're changing them
7589 if ((eh->tls_mask & TLS_TPRELGD) != 0)
7590 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7591 if (gent->got.refcount > 0
7592 && (gent->tls_type & TLS_GD) != 0)
7594 /* This was a GD entry that has been converted to TPREL. If
7595 there happens to be a TPREL entry we can use that one. */
7596 struct got_entry *ent;
7597 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7598 if (ent->got.refcount > 0
7599 && (ent->tls_type & TLS_TPREL) != 0
7600 && ent->addend == gent->addend
7601 && ent->owner == gent->owner)
7603 gent->got.refcount = 0;
7607 /* If not, then we'll be using our own TPREL entry. */
7608 if (gent->got.refcount != 0)
7609 gent->tls_type = TLS_TLS | TLS_TPREL;
7612 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7613 if (gent->got.refcount > 0)
7617 /* Make sure this symbol is output as a dynamic symbol.
7618 Undefined weak syms won't yet be marked as dynamic,
7619 nor will all TLS symbols. */
7620 if (h->dynindx == -1
7621 && !h->forced_local)
7623 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7627 if ((gent->tls_type & TLS_LD) != 0
7630 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
7634 s = ppc64_elf_tdata (gent->owner)->got;
7635 gent->got.offset = s->size;
7637 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
7638 dyn = htab->elf.dynamic_sections_created;
7640 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7641 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7642 || h->root.type != bfd_link_hash_undefweak))
7643 ppc64_elf_tdata (gent->owner)->relgot->size
7644 += (gent->tls_type & eh->tls_mask & TLS_GD
7645 ? 2 * sizeof (Elf64_External_Rela)
7646 : sizeof (Elf64_External_Rela));
7649 gent->got.offset = (bfd_vma) -1;
7651 if (eh->dyn_relocs == NULL)
7654 /* In the shared -Bsymbolic case, discard space allocated for
7655 dynamic pc-relative relocs against symbols which turn out to be
7656 defined in regular objects. For the normal shared case, discard
7657 space for relocs that have become local due to symbol visibility
7662 /* Relocs that use pc_count are those that appear on a call insn,
7663 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7664 generated via assembly. We want calls to protected symbols to
7665 resolve directly to the function rather than going via the plt.
7666 If people want function pointer comparisons to work as expected
7667 then they should avoid writing weird assembly. */
7668 if (SYMBOL_CALLS_LOCAL (info, h))
7670 struct ppc_dyn_relocs **pp;
7672 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
7674 p->count -= p->pc_count;
7683 /* Also discard relocs on undefined weak syms with non-default
7685 if (eh->dyn_relocs != NULL
7686 && h->root.type == bfd_link_hash_undefweak)
7688 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7689 eh->dyn_relocs = NULL;
7691 /* Make sure this symbol is output as a dynamic symbol.
7692 Undefined weak syms won't yet be marked as dynamic. */
7693 else if (h->dynindx == -1
7694 && !h->forced_local)
7696 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7701 else if (ELIMINATE_COPY_RELOCS)
7703 /* For the non-shared case, discard space for relocs against
7704 symbols which turn out to need copy relocs or are not
7711 /* Make sure this symbol is output as a dynamic symbol.
7712 Undefined weak syms won't yet be marked as dynamic. */
7713 if (h->dynindx == -1
7714 && !h->forced_local)
7716 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7720 /* If that succeeded, we know we'll be keeping all the
7722 if (h->dynindx != -1)
7726 eh->dyn_relocs = NULL;
7731 /* Finally, allocate space. */
7732 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7734 asection *sreloc = elf_section_data (p->sec)->sreloc;
7735 sreloc->size += p->count * sizeof (Elf64_External_Rela);
7741 /* Find any dynamic relocs that apply to read-only sections. */
7744 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7746 struct ppc_link_hash_entry *eh;
7747 struct ppc_dyn_relocs *p;
7749 if (h->root.type == bfd_link_hash_warning)
7750 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7752 eh = (struct ppc_link_hash_entry *) h;
7753 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7755 asection *s = p->sec->output_section;
7757 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7759 struct bfd_link_info *info = inf;
7761 info->flags |= DF_TEXTREL;
7763 /* Not an error, just cut short the traversal. */
7770 /* Set the sizes of the dynamic sections. */
7773 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7774 struct bfd_link_info *info)
7776 struct ppc_link_hash_table *htab;
7782 htab = ppc_hash_table (info);
7783 dynobj = htab->elf.dynobj;
7787 if (htab->elf.dynamic_sections_created)
7789 /* Set the contents of the .interp section to the interpreter. */
7790 if (info->executable)
7792 s = bfd_get_section_by_name (dynobj, ".interp");
7795 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7796 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7800 /* Set up .got offsets for local syms, and space for local dynamic
7802 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7804 struct got_entry **lgot_ents;
7805 struct got_entry **end_lgot_ents;
7807 bfd_size_type locsymcount;
7808 Elf_Internal_Shdr *symtab_hdr;
7811 if (!is_ppc64_elf_target (ibfd->xvec))
7814 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7816 s = ppc64_elf_tdata (ibfd)->got;
7817 ppc64_tlsld_got (ibfd)->offset = s->size;
7821 srel = ppc64_elf_tdata (ibfd)->relgot;
7822 srel->size += sizeof (Elf64_External_Rela);
7826 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7828 for (s = ibfd->sections; s != NULL; s = s->next)
7830 struct ppc_dyn_relocs *p;
7832 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
7834 if (!bfd_is_abs_section (p->sec)
7835 && bfd_is_abs_section (p->sec->output_section))
7837 /* Input section has been discarded, either because
7838 it is a copy of a linkonce section or due to
7839 linker script /DISCARD/, so we'll be discarding
7842 else if (p->count != 0)
7844 srel = elf_section_data (p->sec)->sreloc;
7845 srel->size += p->count * sizeof (Elf64_External_Rela);
7846 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7847 info->flags |= DF_TEXTREL;
7852 lgot_ents = elf_local_got_ents (ibfd);
7856 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7857 locsymcount = symtab_hdr->sh_info;
7858 end_lgot_ents = lgot_ents + locsymcount;
7859 lgot_masks = (char *) end_lgot_ents;
7860 s = ppc64_elf_tdata (ibfd)->got;
7861 srel = ppc64_elf_tdata (ibfd)->relgot;
7862 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
7864 struct got_entry *ent;
7866 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7867 if (ent->got.refcount > 0)
7869 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
7871 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
7873 ppc64_tlsld_got (ibfd)->offset = s->size;
7876 srel->size += sizeof (Elf64_External_Rela);
7878 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
7882 ent->got.offset = s->size;
7883 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
7887 srel->size += 2 * sizeof (Elf64_External_Rela);
7893 srel->size += sizeof (Elf64_External_Rela);
7898 ent->got.offset = (bfd_vma) -1;
7902 /* Allocate global sym .plt and .got entries, and space for global
7903 sym dynamic relocs. */
7904 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7906 /* We now have determined the sizes of the various dynamic sections.
7907 Allocate memory for them. */
7909 for (s = dynobj->sections; s != NULL; s = s->next)
7911 if ((s->flags & SEC_LINKER_CREATED) == 0)
7914 if (s == htab->brlt || s == htab->relbrlt)
7915 /* These haven't been allocated yet; don't strip. */
7917 else if (s == htab->got
7920 || s == htab->dynbss)
7922 /* Strip this section if we don't need it; see the
7925 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
7929 if (s != htab->relplt)
7932 /* We use the reloc_count field as a counter if we need
7933 to copy relocs into the output file. */
7939 /* It's not one of our sections, so don't allocate space. */
7945 /* If we don't need this section, strip it from the
7946 output file. This is mostly to handle .rela.bss and
7947 .rela.plt. We must create both sections in
7948 create_dynamic_sections, because they must be created
7949 before the linker maps input sections to output
7950 sections. The linker does that before
7951 adjust_dynamic_symbol is called, and it is that
7952 function which decides whether anything needs to go
7953 into these sections. */
7954 s->flags |= SEC_EXCLUDE;
7958 if ((s->flags & SEC_HAS_CONTENTS) == 0)
7961 /* Allocate memory for the section contents. We use bfd_zalloc
7962 here in case unused entries are not reclaimed before the
7963 section's contents are written out. This should not happen,
7964 but this way if it does we get a R_PPC64_NONE reloc in .rela
7965 sections instead of garbage.
7966 We also rely on the section contents being zero when writing
7968 s->contents = bfd_zalloc (dynobj, s->size);
7969 if (s->contents == NULL)
7973 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7975 if (!is_ppc64_elf_target (ibfd->xvec))
7978 s = ppc64_elf_tdata (ibfd)->got;
7979 if (s != NULL && s != htab->got)
7982 s->flags |= SEC_EXCLUDE;
7985 s->contents = bfd_zalloc (ibfd, s->size);
7986 if (s->contents == NULL)
7990 s = ppc64_elf_tdata (ibfd)->relgot;
7994 s->flags |= SEC_EXCLUDE;
7997 s->contents = bfd_zalloc (ibfd, s->size);
7998 if (s->contents == NULL)
8006 if (htab->elf.dynamic_sections_created)
8008 /* Add some entries to the .dynamic section. We fill in the
8009 values later, in ppc64_elf_finish_dynamic_sections, but we
8010 must add the entries now so that we get the correct size for
8011 the .dynamic section. The DT_DEBUG entry is filled in by the
8012 dynamic linker and used by the debugger. */
8013 #define add_dynamic_entry(TAG, VAL) \
8014 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8016 if (info->executable)
8018 if (!add_dynamic_entry (DT_DEBUG, 0))
8022 if (htab->plt != NULL && htab->plt->size != 0)
8024 if (!add_dynamic_entry (DT_PLTGOT, 0)
8025 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8026 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8027 || !add_dynamic_entry (DT_JMPREL, 0)
8028 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
8034 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8035 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
8041 if (!add_dynamic_entry (DT_RELA, 0)
8042 || !add_dynamic_entry (DT_RELASZ, 0)
8043 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
8046 /* If any dynamic relocs apply to a read-only section,
8047 then we need a DT_TEXTREL entry. */
8048 if ((info->flags & DF_TEXTREL) == 0)
8049 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
8051 if ((info->flags & DF_TEXTREL) != 0)
8053 if (!add_dynamic_entry (DT_TEXTREL, 0))
8058 #undef add_dynamic_entry
8063 /* Determine the type of stub needed, if any, for a call. */
8065 static inline enum ppc_stub_type
8066 ppc_type_of_stub (asection *input_sec,
8067 const Elf_Internal_Rela *rel,
8068 struct ppc_link_hash_entry **hash,
8069 bfd_vma destination)
8071 struct ppc_link_hash_entry *h = *hash;
8073 bfd_vma branch_offset;
8074 bfd_vma max_branch_offset;
8075 enum elf_ppc64_reloc_type r_type;
8079 struct ppc_link_hash_entry *fdh = h;
8081 && fdh->oh->is_func_descriptor)
8084 if (fdh->elf.dynindx != -1)
8086 struct plt_entry *ent;
8088 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
8089 if (ent->addend == rel->r_addend
8090 && ent->plt.offset != (bfd_vma) -1)
8093 return ppc_stub_plt_call;
8097 /* Here, we know we don't have a plt entry. If we don't have a
8098 either a defined function descriptor or a defined entry symbol
8099 in a regular object file, then it is pointless trying to make
8100 any other type of stub. */
8101 if (!((fdh->elf.root.type == bfd_link_hash_defined
8102 || fdh->elf.root.type == bfd_link_hash_defweak)
8103 && fdh->elf.root.u.def.section->output_section != NULL)
8104 && !((h->elf.root.type == bfd_link_hash_defined
8105 || h->elf.root.type == bfd_link_hash_defweak)
8106 && h->elf.root.u.def.section->output_section != NULL))
8107 return ppc_stub_none;
8110 /* Determine where the call point is. */
8111 location = (input_sec->output_offset
8112 + input_sec->output_section->vma
8115 branch_offset = destination - location;
8116 r_type = ELF64_R_TYPE (rel->r_info);
8118 /* Determine if a long branch stub is needed. */
8119 max_branch_offset = 1 << 25;
8120 if (r_type != R_PPC64_REL24)
8121 max_branch_offset = 1 << 15;
8123 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8124 /* We need a stub. Figure out whether a long_branch or plt_branch
8126 return ppc_stub_long_branch;
8128 return ppc_stub_none;
8131 /* Build a .plt call stub. */
8133 static inline bfd_byte *
8134 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
8136 #define PPC_LO(v) ((v) & 0xffff)
8137 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8138 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8140 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8141 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8142 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8143 if (PPC_HA (offset + 8) != PPC_HA (offset))
8144 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
8146 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
8147 if (PPC_HA (offset + 8) != PPC_HA (offset))
8148 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
8150 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8151 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8152 bfd_put_32 (obfd, BCTR, p), p += 4;
8157 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8159 struct ppc_stub_hash_entry *stub_entry;
8160 struct ppc_branch_hash_entry *br_entry;
8161 struct bfd_link_info *info;
8162 struct ppc_link_hash_table *htab;
8166 struct plt_entry *ent;
8170 /* Massage our args to the form they really have. */
8171 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8174 htab = ppc_hash_table (info);
8176 /* Make a note of the offset within the stubs for this entry. */
8177 stub_entry->stub_offset = stub_entry->stub_sec->size;
8178 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
8180 htab->stub_count[stub_entry->stub_type - 1] += 1;
8181 switch (stub_entry->stub_type)
8183 case ppc_stub_long_branch:
8184 case ppc_stub_long_branch_r2off:
8185 /* Branches are relative. This is where we are going to. */
8186 off = dest = (stub_entry->target_value
8187 + stub_entry->target_section->output_offset
8188 + stub_entry->target_section->output_section->vma);
8190 /* And this is where we are coming from. */
8191 off -= (stub_entry->stub_offset
8192 + stub_entry->stub_sec->output_offset
8193 + stub_entry->stub_sec->output_section->vma);
8195 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
8201 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8202 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8203 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
8205 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8207 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
8212 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
8214 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8216 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8217 stub_entry->root.string);
8218 htab->stub_error = TRUE;
8222 if (info->emitrelocations)
8224 Elf_Internal_Rela *relocs, *r;
8225 struct bfd_elf_section_data *elfsec_data;
8227 elfsec_data = elf_section_data (stub_entry->stub_sec);
8228 relocs = elfsec_data->relocs;
8231 bfd_size_type relsize;
8232 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8233 relocs = bfd_alloc (htab->stub_bfd, relsize);
8236 elfsec_data->relocs = relocs;
8237 elfsec_data->rel_hdr.sh_size = relsize;
8238 elfsec_data->rel_hdr.sh_entsize = 24;
8239 stub_entry->stub_sec->reloc_count = 0;
8241 r = relocs + stub_entry->stub_sec->reloc_count;
8242 stub_entry->stub_sec->reloc_count += 1;
8243 r->r_offset = loc - stub_entry->stub_sec->contents;
8244 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8246 if (stub_entry->h != NULL)
8248 struct elf_link_hash_entry **hashes;
8249 unsigned long symndx;
8250 struct ppc_link_hash_entry *h;
8252 hashes = elf_sym_hashes (htab->stub_bfd);
8255 bfd_size_type hsize;
8257 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8258 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8261 elf_sym_hashes (htab->stub_bfd) = hashes;
8262 htab->stub_globals = 1;
8264 symndx = htab->stub_globals++;
8266 hashes[symndx] = &h->elf;
8267 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8268 if (h->oh != NULL && h->oh->is_func)
8270 if (h->elf.root.u.def.section != stub_entry->target_section)
8271 /* H is an opd symbol. The addend must be zero. */
8275 off = (h->elf.root.u.def.value
8276 + h->elf.root.u.def.section->output_offset
8277 + h->elf.root.u.def.section->output_section->vma);
8284 case ppc_stub_plt_branch:
8285 case ppc_stub_plt_branch_r2off:
8286 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8287 stub_entry->root.string + 9,
8289 if (br_entry == NULL)
8291 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8292 stub_entry->root.string);
8293 htab->stub_error = TRUE;
8297 off = (stub_entry->target_value
8298 + stub_entry->target_section->output_offset
8299 + stub_entry->target_section->output_section->vma);
8301 bfd_put_64 (htab->brlt->owner, off,
8302 htab->brlt->contents + br_entry->offset);
8304 if (htab->relbrlt != NULL)
8306 /* Create a reloc for the branch lookup table entry. */
8307 Elf_Internal_Rela rela;
8310 rela.r_offset = (br_entry->offset
8311 + htab->brlt->output_offset
8312 + htab->brlt->output_section->vma);
8313 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8314 rela.r_addend = off;
8316 rl = htab->relbrlt->contents;
8317 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8318 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
8321 off = (br_entry->offset
8322 + htab->brlt->output_offset
8323 + htab->brlt->output_section->vma
8324 - elf_gp (htab->brlt->output_section->owner)
8325 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8327 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8329 (*_bfd_error_handler)
8330 (_("linkage table error against `%s'"),
8331 stub_entry->root.string);
8332 bfd_set_error (bfd_error_bad_value);
8333 htab->stub_error = TRUE;
8338 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8340 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8342 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8349 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8350 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8351 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
8353 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8355 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8357 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8359 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
8363 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
8365 bfd_put_32 (htab->stub_bfd, BCTR, loc);
8368 case ppc_stub_plt_call:
8369 /* Do the best we can for shared libraries built without
8370 exporting ".foo" for each "foo". This can happen when symbol
8371 versioning scripts strip all bar a subset of symbols. */
8372 if (stub_entry->h->oh != NULL
8373 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
8374 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
8376 /* Point the symbol at the stub. There may be multiple stubs,
8377 we don't really care; The main thing is to make this sym
8378 defined somewhere. Maybe defining the symbol in the stub
8379 section is a silly idea. If we didn't do this, htab->top_id
8381 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8382 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8383 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
8386 /* Now build the stub. */
8388 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8389 if (ent->addend == stub_entry->addend)
8391 off = ent->plt.offset;
8394 if (off >= (bfd_vma) -2)
8397 off &= ~ (bfd_vma) 1;
8398 off += (htab->plt->output_offset
8399 + htab->plt->output_section->vma
8400 - elf_gp (htab->plt->output_section->owner)
8401 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8403 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8405 (*_bfd_error_handler)
8406 (_("linkage table error against `%s'"),
8407 stub_entry->h->elf.root.root.string);
8408 bfd_set_error (bfd_error_bad_value);
8409 htab->stub_error = TRUE;
8413 p = build_plt_stub (htab->stub_bfd, loc, off);
8422 stub_entry->stub_sec->size += size;
8424 if (htab->emit_stub_syms)
8426 struct elf_link_hash_entry *h;
8429 const char *const stub_str[] = { "long_branch",
8430 "long_branch_r2off",
8435 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8436 len2 = strlen (stub_entry->root.string);
8437 name = bfd_malloc (len1 + len2 + 2);
8440 memcpy (name, stub_entry->root.string, 9);
8441 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8442 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8443 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
8446 if (h->root.type == bfd_link_hash_new)
8448 h->root.type = bfd_link_hash_defined;
8449 h->root.u.def.section = stub_entry->stub_sec;
8450 h->root.u.def.value = stub_entry->stub_offset;
8453 h->ref_regular_nonweak = 1;
8454 h->forced_local = 1;
8462 /* As above, but don't actually build the stub. Just bump offset so
8463 we know stub section sizes, and select plt_branch stubs where
8464 long_branch stubs won't do. */
8467 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8469 struct ppc_stub_hash_entry *stub_entry;
8470 struct bfd_link_info *info;
8471 struct ppc_link_hash_table *htab;
8475 /* Massage our args to the form they really have. */
8476 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8479 htab = ppc_hash_table (info);
8481 if (stub_entry->stub_type == ppc_stub_plt_call)
8483 struct plt_entry *ent;
8485 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8486 if (ent->addend == stub_entry->addend)
8488 off = ent->plt.offset & ~(bfd_vma) 1;
8491 if (off >= (bfd_vma) -2)
8493 off += (htab->plt->output_offset
8494 + htab->plt->output_section->vma
8495 - elf_gp (htab->plt->output_section->owner)
8496 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8498 size = PLT_CALL_STUB_SIZE;
8499 if (PPC_HA (off + 16) != PPC_HA (off))
8504 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8506 off = (stub_entry->target_value
8507 + stub_entry->target_section->output_offset
8508 + stub_entry->target_section->output_section->vma);
8509 off -= (stub_entry->stub_sec->size
8510 + stub_entry->stub_sec->output_offset
8511 + stub_entry->stub_sec->output_section->vma);
8513 /* Reset the stub type from the plt variant in case we now
8514 can reach with a shorter stub. */
8515 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8516 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8519 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8525 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8526 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8528 struct ppc_branch_hash_entry *br_entry;
8530 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8531 stub_entry->root.string + 9,
8533 if (br_entry == NULL)
8535 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8536 stub_entry->root.string);
8537 htab->stub_error = TRUE;
8541 if (br_entry->iter != htab->stub_iteration)
8543 br_entry->iter = htab->stub_iteration;
8544 br_entry->offset = htab->brlt->size;
8545 htab->brlt->size += 8;
8547 if (htab->relbrlt != NULL)
8548 htab->relbrlt->size += sizeof (Elf64_External_Rela);
8551 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
8553 if (stub_entry->stub_type != ppc_stub_plt_branch)
8557 if (info->emitrelocations
8558 && (stub_entry->stub_type == ppc_stub_long_branch
8559 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8560 stub_entry->stub_sec->reloc_count += 1;
8563 stub_entry->stub_sec->size += size;
8567 /* Set up various things so that we can make a list of input sections
8568 for each output section included in the link. Returns -1 on error,
8569 0 when no stubs will be needed, and 1 on success. */
8572 ppc64_elf_setup_section_lists (bfd *output_bfd,
8573 struct bfd_link_info *info,
8577 int top_id, top_index, id;
8579 asection **input_list;
8581 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8583 htab->no_multi_toc = no_multi_toc;
8585 if (htab->brlt == NULL)
8588 /* Find the top input section id. */
8589 for (input_bfd = info->input_bfds, top_id = 3;
8591 input_bfd = input_bfd->link_next)
8593 for (section = input_bfd->sections;
8595 section = section->next)
8597 if (top_id < section->id)
8598 top_id = section->id;
8602 htab->top_id = top_id;
8603 amt = sizeof (struct map_stub) * (top_id + 1);
8604 htab->stub_group = bfd_zmalloc (amt);
8605 if (htab->stub_group == NULL)
8608 /* Set toc_off for com, und, abs and ind sections. */
8609 for (id = 0; id < 3; id++)
8610 htab->stub_group[id].toc_off = TOC_BASE_OFF;
8612 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
8614 /* We can't use output_bfd->section_count here to find the top output
8615 section index as some sections may have been removed, and
8616 strip_excluded_output_sections doesn't renumber the indices. */
8617 for (section = output_bfd->sections, top_index = 0;
8619 section = section->next)
8621 if (top_index < section->index)
8622 top_index = section->index;
8625 htab->top_index = top_index;
8626 amt = sizeof (asection *) * (top_index + 1);
8627 input_list = bfd_zmalloc (amt);
8628 htab->input_list = input_list;
8629 if (input_list == NULL)
8635 /* The linker repeatedly calls this function for each TOC input section
8636 and linker generated GOT section. Group input bfds such that the toc
8637 within a group is less than 64k in size. Will break with cute linker
8638 scripts that play games with dot in the output toc section. */
8641 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
8643 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8645 if (!htab->no_multi_toc)
8647 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8648 bfd_vma off = addr - htab->toc_curr;
8650 if (off + isec->size > 0x10000)
8651 htab->toc_curr = addr;
8653 elf_gp (isec->owner) = (htab->toc_curr
8654 - elf_gp (isec->output_section->owner)
8659 /* Called after the last call to the above function. */
8662 ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
8664 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8666 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8668 /* toc_curr tracks the TOC offset used for code sections below in
8669 ppc64_elf_next_input_section. Start off at 0x8000. */
8670 htab->toc_curr = TOC_BASE_OFF;
8673 /* No toc references were found in ISEC. If the code in ISEC makes no
8674 calls, then there's no need to use toc adjusting stubs when branching
8675 into ISEC. Actually, indirect calls from ISEC are OK as they will
8676 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8677 needed, and 2 if a cyclical call-graph was found but no other reason
8678 for a stub was detected. If called from the top level, a return of
8679 2 means the same as a return of 0. */
8682 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
8684 Elf_Internal_Rela *relstart, *rel;
8685 Elf_Internal_Sym *local_syms;
8687 struct ppc_link_hash_table *htab;
8689 /* We know none of our code bearing sections will need toc stubs. */
8690 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8693 if (isec->size == 0)
8696 if (isec->output_section == NULL)
8699 /* Hack for linux kernel. .fixup contains branches, but only back to
8700 the function that hit an exception. */
8701 if (strcmp (isec->name, ".fixup") == 0)
8704 if (isec->reloc_count == 0)
8707 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8709 if (relstart == NULL)
8712 /* Look for branches to outside of this section. */
8715 htab = ppc_hash_table (info);
8716 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
8718 enum elf_ppc64_reloc_type r_type;
8719 unsigned long r_symndx;
8720 struct elf_link_hash_entry *h;
8721 Elf_Internal_Sym *sym;
8727 r_type = ELF64_R_TYPE (rel->r_info);
8728 if (r_type != R_PPC64_REL24
8729 && r_type != R_PPC64_REL14
8730 && r_type != R_PPC64_REL14_BRTAKEN
8731 && r_type != R_PPC64_REL14_BRNTAKEN)
8734 r_symndx = ELF64_R_SYM (rel->r_info);
8735 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8742 /* Calls to dynamic lib functions go through a plt call stub
8743 that uses r2. Branches to undefined symbols might be a call
8744 using old-style dot symbols that can be satisfied by a plt
8745 call into a new-style dynamic library. */
8746 if (sym_sec == NULL)
8748 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8751 && eh->oh->elf.plt.plist != NULL)
8757 /* Ignore other undefined symbols. */
8761 /* Assume branches to other sections not included in the link need
8762 stubs too, to cover -R and absolute syms. */
8763 if (sym_sec->output_section == NULL)
8770 sym_value = sym->st_value;
8773 if (h->root.type != bfd_link_hash_defined
8774 && h->root.type != bfd_link_hash_defweak)
8776 sym_value = h->root.u.def.value;
8778 sym_value += rel->r_addend;
8780 /* If this branch reloc uses an opd sym, find the code section. */
8781 opd_adjust = get_opd_info (sym_sec);
8782 if (opd_adjust != NULL)
8788 adjust = opd_adjust[sym->st_value / 8];
8790 /* Assume deleted functions won't ever be called. */
8792 sym_value += adjust;
8795 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8796 if (dest == (bfd_vma) -1)
8801 + sym_sec->output_offset
8802 + sym_sec->output_section->vma);
8804 /* Ignore branch to self. */
8805 if (sym_sec == isec)
8808 /* If the called function uses the toc, we need a stub. */
8809 if (sym_sec->has_toc_reloc
8810 || sym_sec->makes_toc_func_call)
8816 /* Assume any branch that needs a long branch stub might in fact
8817 need a plt_branch stub. A plt_branch stub uses r2. */
8818 else if (dest - (isec->output_offset
8819 + isec->output_section->vma
8820 + rel->r_offset) + (1 << 25) >= (2 << 25))
8826 /* If calling back to a section in the process of being tested, we
8827 can't say for sure that no toc adjusting stubs are needed, so
8828 don't return zero. */
8829 else if (sym_sec->call_check_in_progress)
8832 /* Branches to another section that itself doesn't have any TOC
8833 references are OK. Recursively call ourselves to check. */
8834 else if (sym_sec->id <= htab->top_id
8835 && htab->stub_group[sym_sec->id].toc_off == 0)
8839 /* Mark current section as indeterminate, so that other
8840 sections that call back to current won't be marked as
8842 isec->call_check_in_progress = 1;
8843 recur = toc_adjusting_stub_needed (info, sym_sec);
8844 isec->call_check_in_progress = 0;
8848 /* An error. Exit. */
8852 else if (recur <= 1)
8854 /* Known result. Mark as checked and set section flag. */
8855 htab->stub_group[sym_sec->id].toc_off = 1;
8858 sym_sec->makes_toc_func_call = 1;
8865 /* Unknown result. Continue checking. */
8871 if (local_syms != NULL
8872 && (elf_tdata (isec->owner)->symtab_hdr.contents
8873 != (unsigned char *) local_syms))
8875 if (elf_section_data (isec)->relocs != relstart)
8881 /* The linker repeatedly calls this function for each input section,
8882 in the order that input sections are linked into output sections.
8883 Build lists of input sections to determine groupings between which
8884 we may insert linker stubs. */
8887 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
8889 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8891 if ((isec->output_section->flags & SEC_CODE) != 0
8892 && isec->output_section->index <= htab->top_index)
8894 asection **list = htab->input_list + isec->output_section->index;
8895 /* Steal the link_sec pointer for our list. */
8896 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8897 /* This happens to make the list in reverse order,
8898 which is what we want. */
8899 PREV_SEC (isec) = *list;
8903 if (htab->multi_toc_needed)
8905 /* If a code section has a function that uses the TOC then we need
8906 to use the right TOC (obviously). Also, make sure that .opd gets
8907 the correct TOC value for R_PPC64_TOC relocs that don't have or
8908 can't find their function symbol (shouldn't ever happen now). */
8909 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8911 if (elf_gp (isec->owner) != 0)
8912 htab->toc_curr = elf_gp (isec->owner);
8914 else if (htab->stub_group[isec->id].toc_off == 0)
8916 int ret = toc_adjusting_stub_needed (info, isec);
8920 isec->makes_toc_func_call = ret & 1;
8924 /* Functions that don't use the TOC can belong in any TOC group.
8925 Use the last TOC base. This happens to make _init and _fini
8927 htab->stub_group[isec->id].toc_off = htab->toc_curr;
8931 /* See whether we can group stub sections together. Grouping stub
8932 sections may result in fewer stubs. More importantly, we need to
8933 put all .init* and .fini* stubs at the beginning of the .init or
8934 .fini output sections respectively, because glibc splits the
8935 _init and _fini functions into multiple parts. Putting a stub in
8936 the middle of a function is not a good idea. */
8939 group_sections (struct ppc_link_hash_table *htab,
8940 bfd_size_type stub_group_size,
8941 bfd_boolean stubs_always_before_branch)
8943 asection **list = htab->input_list + htab->top_index;
8946 asection *tail = *list;
8947 while (tail != NULL)
8951 bfd_size_type total;
8952 bfd_boolean big_sec;
8957 big_sec = total > stub_group_size;
8959 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
8961 curr_toc = htab->stub_group[tail->id].toc_off;
8963 while ((prev = PREV_SEC (curr)) != NULL
8964 && ((total += curr->output_offset - prev->output_offset)
8966 && htab->stub_group[prev->id].toc_off == curr_toc)
8969 /* OK, the size from the start of CURR to the end is less
8970 than stub_group_size and thus can be handled by one stub
8971 section. (or the tail section is itself larger than
8972 stub_group_size, in which case we may be toast.) We
8973 should really be keeping track of the total size of stubs
8974 added here, as stubs contribute to the final output
8975 section size. That's a little tricky, and this way will
8976 only break if stubs added make the total size more than
8977 2^25, ie. for the default stub_group_size, if stubs total
8978 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8981 prev = PREV_SEC (tail);
8982 /* Set up this stub group. */
8983 htab->stub_group[tail->id].link_sec = curr;
8985 while (tail != curr && (tail = prev) != NULL);
8987 /* But wait, there's more! Input sections up to stub_group_size
8988 bytes before the stub section can be handled by it too.
8989 Don't do this if we have a really large section after the
8990 stubs, as adding more stubs increases the chance that
8991 branches may not reach into the stub section. */
8992 if (!stubs_always_before_branch && !big_sec)
8996 && ((total += tail->output_offset - prev->output_offset)
8998 && htab->stub_group[prev->id].toc_off == curr_toc)
9001 prev = PREV_SEC (tail);
9002 htab->stub_group[tail->id].link_sec = curr;
9008 while (list-- != htab->input_list);
9009 free (htab->input_list);
9013 /* Determine and set the size of the stub section for a final link.
9015 The basic idea here is to examine all the relocations looking for
9016 PC-relative calls to a target that is unreachable with a "bl"
9020 ppc64_elf_size_stubs (bfd *output_bfd,
9021 struct bfd_link_info *info,
9022 bfd_signed_vma group_size,
9023 asection *(*add_stub_section) (const char *, asection *),
9024 void (*layout_sections_again) (void))
9026 bfd_size_type stub_group_size;
9027 bfd_boolean stubs_always_before_branch;
9028 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9030 /* Stash our params away. */
9031 htab->add_stub_section = add_stub_section;
9032 htab->layout_sections_again = layout_sections_again;
9033 stubs_always_before_branch = group_size < 0;
9035 stub_group_size = -group_size;
9037 stub_group_size = group_size;
9038 if (stub_group_size == 1)
9040 /* Default values. */
9041 if (stubs_always_before_branch)
9043 stub_group_size = 0x1e00000;
9044 if (htab->has_14bit_branch)
9045 stub_group_size = 0x7800;
9049 stub_group_size = 0x1c00000;
9050 if (htab->has_14bit_branch)
9051 stub_group_size = 0x7000;
9055 group_sections (htab, stub_group_size, stubs_always_before_branch);
9060 unsigned int bfd_indx;
9063 htab->stub_iteration += 1;
9065 for (input_bfd = info->input_bfds, bfd_indx = 0;
9067 input_bfd = input_bfd->link_next, bfd_indx++)
9069 Elf_Internal_Shdr *symtab_hdr;
9071 Elf_Internal_Sym *local_syms = NULL;
9073 if (!is_ppc64_elf_target (input_bfd->xvec))
9076 /* We'll need the symbol table in a second. */
9077 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9078 if (symtab_hdr->sh_info == 0)
9081 /* Walk over each section attached to the input bfd. */
9082 for (section = input_bfd->sections;
9084 section = section->next)
9086 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
9088 /* If there aren't any relocs, then there's nothing more
9090 if ((section->flags & SEC_RELOC) == 0
9091 || (section->flags & SEC_ALLOC) == 0
9092 || (section->flags & SEC_LOAD) == 0
9093 || (section->flags & SEC_CODE) == 0
9094 || section->reloc_count == 0)
9097 /* If this section is a link-once section that will be
9098 discarded, then don't create any stubs. */
9099 if (section->output_section == NULL
9100 || section->output_section->owner != output_bfd)
9103 /* Get the relocs. */
9105 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
9107 if (internal_relocs == NULL)
9108 goto error_ret_free_local;
9110 /* Now examine each relocation. */
9111 irela = internal_relocs;
9112 irelaend = irela + section->reloc_count;
9113 for (; irela < irelaend; irela++)
9115 enum elf_ppc64_reloc_type r_type;
9116 unsigned int r_indx;
9117 enum ppc_stub_type stub_type;
9118 struct ppc_stub_hash_entry *stub_entry;
9119 asection *sym_sec, *code_sec;
9121 bfd_vma destination;
9122 bfd_boolean ok_dest;
9123 struct ppc_link_hash_entry *hash;
9124 struct ppc_link_hash_entry *fdh;
9125 struct elf_link_hash_entry *h;
9126 Elf_Internal_Sym *sym;
9128 const asection *id_sec;
9131 r_type = ELF64_R_TYPE (irela->r_info);
9132 r_indx = ELF64_R_SYM (irela->r_info);
9134 if (r_type >= R_PPC64_max)
9136 bfd_set_error (bfd_error_bad_value);
9137 goto error_ret_free_internal;
9140 /* Only look for stubs on branch instructions. */
9141 if (r_type != R_PPC64_REL24
9142 && r_type != R_PPC64_REL14
9143 && r_type != R_PPC64_REL14_BRTAKEN
9144 && r_type != R_PPC64_REL14_BRNTAKEN)
9147 /* Now determine the call target, its name, value,
9149 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9151 goto error_ret_free_internal;
9152 hash = (struct ppc_link_hash_entry *) h;
9159 sym_value = sym->st_value;
9162 else if (hash->elf.root.type == bfd_link_hash_defined
9163 || hash->elf.root.type == bfd_link_hash_defweak)
9165 sym_value = hash->elf.root.u.def.value;
9166 if (sym_sec->output_section != NULL)
9169 else if (hash->elf.root.type == bfd_link_hash_undefweak
9170 || hash->elf.root.type == bfd_link_hash_undefined)
9172 /* Recognise an old ABI func code entry sym, and
9173 use the func descriptor sym instead if it is
9175 if (hash->elf.root.root.string[0] == '.'
9176 && (fdh = get_fdh (hash, htab)) != NULL)
9178 if (fdh->elf.root.type == bfd_link_hash_defined
9179 || fdh->elf.root.type == bfd_link_hash_defweak)
9181 sym_sec = fdh->elf.root.u.def.section;
9182 sym_value = fdh->elf.root.u.def.value;
9183 if (sym_sec->output_section != NULL)
9192 bfd_set_error (bfd_error_bad_value);
9193 goto error_ret_free_internal;
9199 sym_value += irela->r_addend;
9200 destination = (sym_value
9201 + sym_sec->output_offset
9202 + sym_sec->output_section->vma);
9206 opd_adjust = get_opd_info (sym_sec);
9207 if (opd_adjust != NULL)
9213 long adjust = opd_adjust[sym_value / 8];
9216 sym_value += adjust;
9218 dest = opd_entry_value (sym_sec, sym_value,
9219 &code_sec, &sym_value);
9220 if (dest != (bfd_vma) -1)
9225 /* Fixup old ABI sym to point at code
9227 hash->elf.root.type = bfd_link_hash_defweak;
9228 hash->elf.root.u.def.section = code_sec;
9229 hash->elf.root.u.def.value = sym_value;
9234 /* Determine what (if any) linker stub is needed. */
9235 stub_type = ppc_type_of_stub (section, irela, &hash,
9238 if (stub_type != ppc_stub_plt_call)
9240 /* Check whether we need a TOC adjusting stub.
9241 Since the linker pastes together pieces from
9242 different object files when creating the
9243 _init and _fini functions, it may be that a
9244 call to what looks like a local sym is in
9245 fact a call needing a TOC adjustment. */
9246 if (code_sec != NULL
9247 && code_sec->output_section != NULL
9248 && (htab->stub_group[code_sec->id].toc_off
9249 != htab->stub_group[section->id].toc_off)
9250 && (code_sec->has_toc_reloc
9251 || code_sec->makes_toc_func_call))
9252 stub_type = ppc_stub_long_branch_r2off;
9255 if (stub_type == ppc_stub_none)
9258 /* __tls_get_addr calls might be eliminated. */
9259 if (stub_type != ppc_stub_plt_call
9261 && (hash == htab->tls_get_addr
9262 || hash == htab->tls_get_addr_fd)
9263 && section->has_tls_reloc
9264 && irela != internal_relocs)
9269 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
9270 irela - 1, input_bfd))
9271 goto error_ret_free_internal;
9276 /* Support for grouping stub sections. */
9277 id_sec = htab->stub_group[section->id].link_sec;
9279 /* Get the name of this stub. */
9280 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9282 goto error_ret_free_internal;
9284 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
9285 stub_name, FALSE, FALSE);
9286 if (stub_entry != NULL)
9288 /* The proper stub has already been created. */
9293 stub_entry = ppc_add_stub (stub_name, section, htab);
9294 if (stub_entry == NULL)
9297 error_ret_free_internal:
9298 if (elf_section_data (section)->relocs == NULL)
9299 free (internal_relocs);
9300 error_ret_free_local:
9301 if (local_syms != NULL
9302 && (symtab_hdr->contents
9303 != (unsigned char *) local_syms))
9308 stub_entry->stub_type = stub_type;
9309 stub_entry->target_value = sym_value;
9310 stub_entry->target_section = code_sec;
9311 stub_entry->h = hash;
9312 stub_entry->addend = irela->r_addend;
9314 if (stub_entry->h != NULL)
9315 htab->stub_globals += 1;
9318 /* We're done with the internal relocs, free them. */
9319 if (elf_section_data (section)->relocs != internal_relocs)
9320 free (internal_relocs);
9323 if (local_syms != NULL
9324 && symtab_hdr->contents != (unsigned char *) local_syms)
9326 if (!info->keep_memory)
9329 symtab_hdr->contents = (unsigned char *) local_syms;
9333 /* We may have added some stubs. Find out the new size of the
9335 for (stub_sec = htab->stub_bfd->sections;
9337 stub_sec = stub_sec->next)
9338 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9340 stub_sec->rawsize = stub_sec->size;
9342 stub_sec->reloc_count = 0;
9345 htab->brlt->size = 0;
9346 if (htab->relbrlt != NULL)
9347 htab->relbrlt->size = 0;
9349 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
9351 for (stub_sec = htab->stub_bfd->sections;
9353 stub_sec = stub_sec->next)
9354 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9355 && stub_sec->rawsize != stub_sec->size)
9358 /* Exit from this loop when no stubs have been added, and no stubs
9359 have changed size. */
9360 if (stub_sec == NULL)
9363 /* Ask the linker to do its stuff. */
9364 (*htab->layout_sections_again) ();
9367 /* It would be nice to strip htab->brlt from the output if the
9368 section is empty, but it's too late. If we strip sections here,
9369 the dynamic symbol table is corrupted since the section symbol
9370 for the stripped section isn't written. */
9375 /* Called after we have determined section placement. If sections
9376 move, we'll be called again. Provide a value for TOCstart. */
9379 ppc64_elf_toc (bfd *obfd)
9384 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9385 order. The TOC starts where the first of these sections starts. */
9386 s = bfd_get_section_by_name (obfd, ".got");
9388 s = bfd_get_section_by_name (obfd, ".toc");
9390 s = bfd_get_section_by_name (obfd, ".tocbss");
9392 s = bfd_get_section_by_name (obfd, ".plt");
9395 /* This may happen for
9396 o references to TOC base (SYM@toc / TOC[tc0]) without a
9399 o --gc-sections and empty TOC sections
9401 FIXME: Warn user? */
9403 /* Look for a likely section. We probably won't even be
9405 for (s = obfd->sections; s != NULL; s = s->next)
9406 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9407 == (SEC_ALLOC | SEC_SMALL_DATA))
9410 for (s = obfd->sections; s != NULL; s = s->next)
9411 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9412 == (SEC_ALLOC | SEC_SMALL_DATA))
9415 for (s = obfd->sections; s != NULL; s = s->next)
9416 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9419 for (s = obfd->sections; s != NULL; s = s->next)
9420 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9426 TOCstart = s->output_section->vma + s->output_offset;
9431 /* Build all the stubs associated with the current output file.
9432 The stubs are kept in a hash table attached to the main linker
9433 hash table. This function is called via gldelf64ppc_finish. */
9436 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9437 struct bfd_link_info *info,
9440 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9443 int stub_sec_count = 0;
9445 htab->emit_stub_syms = emit_stub_syms;
9447 /* Allocate memory to hold the linker stubs. */
9448 for (stub_sec = htab->stub_bfd->sections;
9450 stub_sec = stub_sec->next)
9451 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9452 && stub_sec->size != 0)
9454 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9455 if (stub_sec->contents == NULL)
9457 /* We want to check that built size is the same as calculated
9458 size. rawsize is a convenient location to use. */
9459 stub_sec->rawsize = stub_sec->size;
9463 if (htab->glink != NULL && htab->glink->size != 0)
9468 /* Build the .glink plt call stub. */
9469 if (htab->emit_stub_syms)
9471 struct elf_link_hash_entry *h;
9472 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9475 if (h->root.type == bfd_link_hash_new)
9477 h->root.type = bfd_link_hash_defined;
9478 h->root.u.def.section = htab->glink;
9479 h->root.u.def.value = 8;
9482 h->ref_regular_nonweak = 1;
9483 h->forced_local = 1;
9487 p = htab->glink->contents;
9488 plt0 = (htab->plt->output_section->vma
9489 + htab->plt->output_offset
9490 - (htab->glink->output_section->vma
9491 + htab->glink->output_offset
9493 bfd_put_64 (htab->glink->owner, plt0, p);
9495 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
9497 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
9499 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
9501 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
9503 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
9505 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
9507 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
9509 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
9511 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
9513 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
9515 bfd_put_32 (htab->glink->owner, BCTR, p);
9517 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
9519 bfd_put_32 (htab->glink->owner, NOP, p);
9523 /* Build the .glink lazy link call stubs. */
9525 while (p < htab->glink->contents + htab->glink->size)
9529 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9534 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9536 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9539 bfd_put_32 (htab->glink->owner,
9540 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
9544 htab->glink->rawsize = p - htab->glink->contents;
9547 if (htab->brlt->size != 0)
9549 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
9551 if (htab->brlt->contents == NULL)
9554 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
9556 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
9557 htab->relbrlt->size);
9558 if (htab->relbrlt->contents == NULL)
9562 /* Build the stubs as directed by the stub hash table. */
9563 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
9565 if (htab->relbrlt != NULL)
9566 htab->relbrlt->reloc_count = 0;
9568 for (stub_sec = htab->stub_bfd->sections;
9570 stub_sec = stub_sec->next)
9571 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9573 stub_sec_count += 1;
9574 if (stub_sec->rawsize != stub_sec->size)
9578 if (stub_sec != NULL
9579 || htab->glink->rawsize != htab->glink->size)
9581 htab->stub_error = TRUE;
9582 (*_bfd_error_handler) (_("stubs don't match calculated size"));
9585 if (htab->stub_error)
9590 *stats = bfd_malloc (500);
9594 sprintf (*stats, _("linker stubs in %u group%s\n"
9597 " long branch %lu\n"
9598 " long toc adj %lu\n"
9601 stub_sec_count == 1 ? "" : "s",
9602 htab->stub_count[ppc_stub_long_branch - 1],
9603 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9604 htab->stub_count[ppc_stub_plt_branch - 1],
9605 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9606 htab->stub_count[ppc_stub_plt_call - 1]);
9611 /* This function undoes the changes made by add_symbol_adjust. */
9614 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9616 struct ppc_link_hash_entry *eh;
9618 if (h->root.type == bfd_link_hash_indirect)
9621 if (h->root.type == bfd_link_hash_warning)
9622 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9624 eh = (struct ppc_link_hash_entry *) h;
9625 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9628 eh->elf.root.type = bfd_link_hash_undefined;
9633 ppc64_elf_restore_symbols (struct bfd_link_info *info)
9635 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9636 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9639 /* What to do when ld finds relocations against symbols defined in
9640 discarded sections. */
9643 ppc64_elf_action_discarded (asection *sec)
9645 if (strcmp (".opd", sec->name) == 0)
9648 if (strcmp (".toc", sec->name) == 0)
9651 if (strcmp (".toc1", sec->name) == 0)
9654 return _bfd_elf_default_action_discarded (sec);
9657 /* The RELOCATE_SECTION function is called by the ELF backend linker
9658 to handle the relocations for a section.
9660 The relocs are always passed as Rela structures; if the section
9661 actually uses Rel structures, the r_addend field will always be
9664 This function is responsible for adjust the section contents as
9665 necessary, and (if using Rela relocs and generating a
9666 relocatable output file) adjusting the reloc addend as
9669 This function does not have to worry about setting the reloc
9670 address or the reloc symbol index.
9672 LOCAL_SYMS is a pointer to the swapped in local symbols.
9674 LOCAL_SECTIONS is an array giving the section in the input file
9675 corresponding to the st_shndx field of each local symbol.
9677 The global hash table entry for the global symbols can be found
9678 via elf_sym_hashes (input_bfd).
9680 When generating relocatable output, this function must handle
9681 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9682 going to be the section symbol corresponding to the output
9683 section, which means that the addend must be adjusted
9687 ppc64_elf_relocate_section (bfd *output_bfd,
9688 struct bfd_link_info *info,
9690 asection *input_section,
9692 Elf_Internal_Rela *relocs,
9693 Elf_Internal_Sym *local_syms,
9694 asection **local_sections)
9696 struct ppc_link_hash_table *htab;
9697 Elf_Internal_Shdr *symtab_hdr;
9698 struct elf_link_hash_entry **sym_hashes;
9699 Elf_Internal_Rela *rel;
9700 Elf_Internal_Rela *relend;
9701 Elf_Internal_Rela outrel;
9703 struct got_entry **local_got_ents;
9705 bfd_boolean ret = TRUE;
9707 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9708 bfd_boolean is_power4 = FALSE;
9710 /* Initialize howto table if needed. */
9711 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9714 htab = ppc_hash_table (info);
9716 /* Don't relocate stub sections. */
9717 if (input_section->owner == htab->stub_bfd)
9720 local_got_ents = elf_local_got_ents (input_bfd);
9721 TOCstart = elf_gp (output_bfd);
9722 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9723 sym_hashes = elf_sym_hashes (input_bfd);
9724 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
9727 relend = relocs + input_section->reloc_count;
9728 for (; rel < relend; rel++)
9730 enum elf_ppc64_reloc_type r_type;
9731 bfd_vma addend, orig_addend;
9732 bfd_reloc_status_type r;
9733 Elf_Internal_Sym *sym;
9735 struct elf_link_hash_entry *h_elf;
9736 struct ppc_link_hash_entry *h;
9737 struct ppc_link_hash_entry *fdh;
9738 const char *sym_name;
9739 unsigned long r_symndx, toc_symndx;
9740 char tls_mask, tls_gd, tls_type;
9743 bfd_boolean unresolved_reloc;
9745 unsigned long insn, mask;
9746 struct ppc_stub_hash_entry *stub_entry;
9747 bfd_vma max_br_offset;
9750 r_type = ELF64_R_TYPE (rel->r_info);
9751 r_symndx = ELF64_R_SYM (rel->r_info);
9753 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9754 symbol of the previous ADDR64 reloc. The symbol gives us the
9755 proper TOC base to use. */
9756 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9758 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9760 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9766 unresolved_reloc = FALSE;
9768 orig_addend = rel->r_addend;
9770 if (r_symndx < symtab_hdr->sh_info)
9772 /* It's a local symbol. */
9775 sym = local_syms + r_symndx;
9776 sec = local_sections[r_symndx];
9777 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
9778 sym_type = ELF64_ST_TYPE (sym->st_info);
9779 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
9780 opd_adjust = get_opd_info (sec);
9781 if (opd_adjust != NULL)
9783 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
9788 /* If this is a relocation against the opd section sym
9789 and we have edited .opd, adjust the reloc addend so
9790 that ld -r and ld --emit-relocs output is correct.
9791 If it is a reloc against some other .opd symbol,
9792 then the symbol value will be adjusted later. */
9793 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
9794 rel->r_addend += adjust;
9796 relocation += adjust;
9799 if (info->relocatable)
9804 if (info->relocatable)
9806 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9807 r_symndx, symtab_hdr, sym_hashes,
9808 h_elf, sec, relocation,
9809 unresolved_reloc, warned);
9810 sym_name = h_elf->root.root.string;
9811 sym_type = h_elf->type;
9813 h = (struct ppc_link_hash_entry *) h_elf;
9815 /* TLS optimizations. Replace instruction sequences and relocs
9816 based on information we collected in tls_optimize. We edit
9817 RELOCS so that --emit-relocs will output something sensible
9818 for the final instruction stream. */
9822 if (IS_PPC64_TLS_RELOC (r_type))
9825 tls_mask = h->tls_mask;
9826 else if (local_got_ents != NULL)
9829 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9830 tls_mask = lgot_masks[r_symndx];
9832 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9834 /* Check for toc tls entries. */
9837 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9842 tls_mask = *toc_tls;
9846 /* Check that tls relocs are used with tls syms, and non-tls
9847 relocs are used with non-tls syms. */
9849 && r_type != R_PPC64_NONE
9851 || h->elf.root.type == bfd_link_hash_defined
9852 || h->elf.root.type == bfd_link_hash_defweak)
9853 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9855 if (r_type == R_PPC64_TLS && tls_mask != 0)
9856 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9859 (*_bfd_error_handler)
9860 (sym_type == STT_TLS
9861 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9862 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9865 (long) rel->r_offset,
9866 ppc64_elf_howto_table[r_type]->name,
9870 /* Ensure reloc mapping code below stays sane. */
9871 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9872 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9873 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9874 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9875 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9876 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9877 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9878 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9879 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9880 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9889 case R_PPC64_TOC16_LO:
9890 case R_PPC64_TOC16_DS:
9891 case R_PPC64_TOC16_LO_DS:
9893 /* Check for toc tls entries. */
9897 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9904 tls_mask = *toc_tls;
9905 if (r_type == R_PPC64_TOC16_DS
9906 || r_type == R_PPC64_TOC16_LO_DS)
9909 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9914 /* If we found a GD reloc pair, then we might be
9915 doing a GD->IE transition. */
9918 tls_gd = TLS_TPRELGD;
9919 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9920 goto tls_get_addr_check;
9922 else if (retval == 3)
9924 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9925 goto tls_get_addr_check;
9932 case R_PPC64_GOT_TPREL16_DS:
9933 case R_PPC64_GOT_TPREL16_LO_DS:
9935 && (tls_mask & TLS_TPREL) == 0)
9938 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9940 insn |= 0x3c0d0000; /* addis 0,13,0 */
9941 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9942 r_type = R_PPC64_TPREL16_HA;
9943 if (toc_symndx != 0)
9945 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9946 /* We changed the symbol. Start over in order to
9947 get h, sym, sec etc. right. */
9952 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9958 && (tls_mask & TLS_TPREL) == 0)
9961 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9962 if ((insn & ((0x3f << 26) | (31 << 11)))
9963 == ((31 << 26) | (13 << 11)))
9964 rtra = insn & ((1 << 26) - (1 << 16));
9965 else if ((insn & ((0x3f << 26) | (31 << 16)))
9966 == ((31 << 26) | (13 << 16)))
9967 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9970 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9973 else if ((insn & (31 << 1)) == 23 << 1
9974 && ((insn & (31 << 6)) < 14 << 6
9975 || ((insn & (31 << 6)) >= 16 << 6
9976 && (insn & (31 << 6)) < 24 << 6)))
9977 /* load and store indexed -> dform. */
9978 insn = (32 | ((insn >> 6) & 31)) << 26;
9979 else if ((insn & (31 << 1)) == 21 << 1
9980 && (insn & (0x1a << 6)) == 0)
9981 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9982 insn = (((58 | ((insn >> 6) & 4)) << 26)
9983 | ((insn >> 6) & 1));
9984 else if ((insn & (31 << 1)) == 21 << 1
9985 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9987 insn = (58 << 26) | 2;
9991 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9992 /* Was PPC64_TLS which sits on insn boundary, now
9993 PPC64_TPREL16_LO which is at insn+2. */
9995 r_type = R_PPC64_TPREL16_LO;
9996 if (toc_symndx != 0)
9998 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9999 /* We changed the symbol. Start over in order to
10000 get h, sym, sec etc. right. */
10005 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10009 case R_PPC64_GOT_TLSGD16_HI:
10010 case R_PPC64_GOT_TLSGD16_HA:
10011 tls_gd = TLS_TPRELGD;
10012 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10016 case R_PPC64_GOT_TLSLD16_HI:
10017 case R_PPC64_GOT_TLSLD16_HA:
10018 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10021 if ((tls_mask & tls_gd) != 0)
10022 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10023 + R_PPC64_GOT_TPREL16_DS);
10026 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10027 rel->r_offset -= 2;
10028 r_type = R_PPC64_NONE;
10030 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10034 case R_PPC64_GOT_TLSGD16:
10035 case R_PPC64_GOT_TLSGD16_LO:
10036 tls_gd = TLS_TPRELGD;
10037 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10038 goto tls_get_addr_check;
10041 case R_PPC64_GOT_TLSLD16:
10042 case R_PPC64_GOT_TLSLD16_LO:
10043 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10045 tls_get_addr_check:
10046 if (rel + 1 < relend)
10048 enum elf_ppc64_reloc_type r_type2;
10049 unsigned long r_symndx2;
10050 struct elf_link_hash_entry *h2;
10051 bfd_vma insn1, insn2, insn3;
10054 /* The next instruction should be a call to
10055 __tls_get_addr. Peek at the reloc to be sure. */
10056 r_type2 = ELF64_R_TYPE (rel[1].r_info);
10057 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
10058 if (r_symndx2 < symtab_hdr->sh_info
10059 || (r_type2 != R_PPC64_REL14
10060 && r_type2 != R_PPC64_REL14_BRTAKEN
10061 && r_type2 != R_PPC64_REL14_BRNTAKEN
10062 && r_type2 != R_PPC64_REL24))
10065 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
10066 while (h2->root.type == bfd_link_hash_indirect
10067 || h2->root.type == bfd_link_hash_warning)
10068 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
10069 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
10070 && h2 != &htab->tls_get_addr_fd->elf))
10073 /* OK, it checks out. Replace the call. */
10074 offset = rel[1].r_offset;
10075 insn1 = bfd_get_32 (output_bfd,
10076 contents + rel->r_offset - 2);
10077 insn3 = bfd_get_32 (output_bfd,
10078 contents + offset + 4);
10079 if ((tls_mask & tls_gd) != 0)
10082 insn1 &= (1 << 26) - (1 << 2);
10083 insn1 |= 58 << 26; /* ld */
10084 insn2 = 0x7c636a14; /* add 3,3,13 */
10085 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
10086 if ((tls_mask & TLS_EXPLICIT) == 0)
10087 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10088 + R_PPC64_GOT_TPREL16_DS);
10090 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10091 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10096 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10097 insn2 = 0x38630000; /* addi 3,3,0 */
10100 /* Was an LD reloc. */
10102 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10103 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10105 else if (toc_symndx != 0)
10106 r_symndx = toc_symndx;
10107 r_type = R_PPC64_TPREL16_HA;
10108 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10109 rel[1].r_info = ELF64_R_INFO (r_symndx,
10110 R_PPC64_TPREL16_LO);
10111 rel[1].r_offset += 2;
10114 || insn3 == CROR_151515 || insn3 == CROR_313131)
10118 rel[1].r_offset += 4;
10120 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
10121 bfd_put_32 (output_bfd, insn2, contents + offset);
10122 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
10123 if (tls_gd == 0 || toc_symndx != 0)
10125 /* We changed the symbol. Start over in order
10126 to get h, sym, sec etc. right. */
10134 case R_PPC64_DTPMOD64:
10135 if (rel + 1 < relend
10136 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10137 && rel[1].r_offset == rel->r_offset + 8)
10139 if ((tls_mask & TLS_GD) == 0)
10141 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10142 if ((tls_mask & TLS_TPRELGD) != 0)
10143 r_type = R_PPC64_TPREL64;
10146 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
10147 r_type = R_PPC64_NONE;
10149 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10154 if ((tls_mask & TLS_LD) == 0)
10156 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
10157 r_type = R_PPC64_NONE;
10158 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10163 case R_PPC64_TPREL64:
10164 if ((tls_mask & TLS_TPREL) == 0)
10166 r_type = R_PPC64_NONE;
10167 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10172 /* Handle other relocations that tweak non-addend part of insn. */
10174 max_br_offset = 1 << 25;
10175 addend = rel->r_addend;
10181 /* Branch taken prediction relocations. */
10182 case R_PPC64_ADDR14_BRTAKEN:
10183 case R_PPC64_REL14_BRTAKEN:
10184 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10187 /* Branch not taken prediction relocations. */
10188 case R_PPC64_ADDR14_BRNTAKEN:
10189 case R_PPC64_REL14_BRNTAKEN:
10190 insn |= bfd_get_32 (output_bfd,
10191 contents + rel->r_offset) & ~(0x01 << 21);
10194 case R_PPC64_REL14:
10195 max_br_offset = 1 << 15;
10198 case R_PPC64_REL24:
10199 /* Calls to functions with a different TOC, such as calls to
10200 shared objects, need to alter the TOC pointer. This is
10201 done using a linkage stub. A REL24 branching to these
10202 linkage stubs needs to be followed by a nop, as the nop
10203 will be replaced with an instruction to restore the TOC
10208 && (((fdh = h->oh) != NULL
10209 && fdh->elf.plt.plist != NULL)
10210 || (fdh = h)->elf.plt.plist != NULL))
10212 && sec->output_section != NULL
10213 && sec->id <= htab->top_id
10214 && (htab->stub_group[sec->id].toc_off
10215 != htab->stub_group[input_section->id].toc_off)))
10216 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
10217 rel, htab)) != NULL
10218 && (stub_entry->stub_type == ppc_stub_plt_call
10219 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10220 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
10222 bfd_boolean can_plt_call = FALSE;
10224 if (rel->r_offset + 8 <= input_section->size)
10227 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10229 || nop == CROR_151515 || nop == CROR_313131)
10231 bfd_put_32 (input_bfd, LD_R2_40R1,
10232 contents + rel->r_offset + 4);
10233 can_plt_call = TRUE;
10239 if (stub_entry->stub_type == ppc_stub_plt_call)
10241 /* If this is a plain branch rather than a branch
10242 and link, don't require a nop. However, don't
10243 allow tail calls in a shared library as they
10244 will result in r2 being corrupted. */
10246 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
10247 if (info->executable && (br & 1) == 0)
10248 can_plt_call = TRUE;
10253 && strcmp (h->elf.root.root.string,
10254 ".__libc_start_main") == 0)
10256 /* Allow crt1 branch to go via a toc adjusting stub. */
10257 can_plt_call = TRUE;
10261 if (strcmp (input_section->output_section->name,
10263 || strcmp (input_section->output_section->name,
10265 (*_bfd_error_handler)
10266 (_("%B(%A+0x%lx): automatic multiple TOCs "
10267 "not supported using your crt files; "
10268 "recompile with -mminimal-toc or upgrade gcc"),
10271 (long) rel->r_offset);
10273 (*_bfd_error_handler)
10274 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10275 "does not allow automatic multiple TOCs; "
10276 "recompile with -mminimal-toc or "
10277 "-fno-optimize-sibling-calls, "
10278 "or make `%s' extern"),
10281 (long) rel->r_offset,
10284 bfd_set_error (bfd_error_bad_value);
10290 && stub_entry->stub_type == ppc_stub_plt_call)
10291 unresolved_reloc = FALSE;
10294 if (stub_entry == NULL
10295 && get_opd_info (sec) != NULL)
10297 /* The branch destination is the value of the opd entry. */
10298 bfd_vma off = (relocation + addend
10299 - sec->output_section->vma
10300 - sec->output_offset);
10301 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10302 if (dest != (bfd_vma) -1)
10309 /* If the branch is out of reach we ought to have a long
10311 from = (rel->r_offset
10312 + input_section->output_offset
10313 + input_section->output_section->vma);
10315 if (stub_entry == NULL
10316 && (relocation + addend - from + max_br_offset
10317 >= 2 * max_br_offset)
10318 && r_type != R_PPC64_ADDR14_BRTAKEN
10319 && r_type != R_PPC64_ADDR14_BRNTAKEN)
10320 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10323 if (stub_entry != NULL)
10325 /* Munge up the value and addend so that we call the stub
10326 rather than the procedure directly. */
10327 relocation = (stub_entry->stub_offset
10328 + stub_entry->stub_sec->output_offset
10329 + stub_entry->stub_sec->output_section->vma);
10337 /* Set 'a' bit. This is 0b00010 in BO field for branch
10338 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10339 for branch on CTR insns (BO == 1a00t or 1a01t). */
10340 if ((insn & (0x14 << 21)) == (0x04 << 21))
10341 insn |= 0x02 << 21;
10342 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10343 insn |= 0x08 << 21;
10349 /* Invert 'y' bit if not the default. */
10350 if ((bfd_signed_vma) (relocation + addend - from) < 0)
10351 insn ^= 0x01 << 21;
10354 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
10357 /* NOP out calls to undefined weak functions.
10358 We can thus call a weak function without first
10359 checking whether the function is defined. */
10361 && h->elf.root.type == bfd_link_hash_undefweak
10362 && r_type == R_PPC64_REL24
10366 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10372 /* Set `addend'. */
10377 (*_bfd_error_handler)
10378 (_("%B: unknown relocation type %d for symbol %s"),
10379 input_bfd, (int) r_type, sym_name);
10381 bfd_set_error (bfd_error_bad_value);
10387 case R_PPC64_GNU_VTINHERIT:
10388 case R_PPC64_GNU_VTENTRY:
10391 /* GOT16 relocations. Like an ADDR16 using the symbol's
10392 address in the GOT as relocation value instead of the
10393 symbol's value itself. Also, create a GOT entry for the
10394 symbol and put the symbol value there. */
10395 case R_PPC64_GOT_TLSGD16:
10396 case R_PPC64_GOT_TLSGD16_LO:
10397 case R_PPC64_GOT_TLSGD16_HI:
10398 case R_PPC64_GOT_TLSGD16_HA:
10399 tls_type = TLS_TLS | TLS_GD;
10402 case R_PPC64_GOT_TLSLD16:
10403 case R_PPC64_GOT_TLSLD16_LO:
10404 case R_PPC64_GOT_TLSLD16_HI:
10405 case R_PPC64_GOT_TLSLD16_HA:
10406 tls_type = TLS_TLS | TLS_LD;
10409 case R_PPC64_GOT_TPREL16_DS:
10410 case R_PPC64_GOT_TPREL16_LO_DS:
10411 case R_PPC64_GOT_TPREL16_HI:
10412 case R_PPC64_GOT_TPREL16_HA:
10413 tls_type = TLS_TLS | TLS_TPREL;
10416 case R_PPC64_GOT_DTPREL16_DS:
10417 case R_PPC64_GOT_DTPREL16_LO_DS:
10418 case R_PPC64_GOT_DTPREL16_HI:
10419 case R_PPC64_GOT_DTPREL16_HA:
10420 tls_type = TLS_TLS | TLS_DTPREL;
10423 case R_PPC64_GOT16:
10424 case R_PPC64_GOT16_LO:
10425 case R_PPC64_GOT16_HI:
10426 case R_PPC64_GOT16_HA:
10427 case R_PPC64_GOT16_DS:
10428 case R_PPC64_GOT16_LO_DS:
10431 /* Relocation is to the entry for this symbol in the global
10436 unsigned long indx = 0;
10438 if (tls_type == (TLS_TLS | TLS_LD)
10440 || !h->elf.def_dynamic))
10441 offp = &ppc64_tlsld_got (input_bfd)->offset;
10444 struct got_entry *ent;
10448 bfd_boolean dyn = htab->elf.dynamic_sections_created;
10449 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10452 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
10453 /* This is actually a static link, or it is a
10454 -Bsymbolic link and the symbol is defined
10455 locally, or the symbol was forced to be local
10456 because of a version file. */
10460 indx = h->elf.dynindx;
10461 unresolved_reloc = FALSE;
10463 ent = h->elf.got.glist;
10467 if (local_got_ents == NULL)
10469 ent = local_got_ents[r_symndx];
10472 for (; ent != NULL; ent = ent->next)
10473 if (ent->addend == orig_addend
10474 && ent->owner == input_bfd
10475 && ent->tls_type == tls_type)
10479 offp = &ent->got.offset;
10482 got = ppc64_elf_tdata (input_bfd)->got;
10486 /* The offset must always be a multiple of 8. We use the
10487 least significant bit to record whether we have already
10488 processed this entry. */
10490 if ((off & 1) != 0)
10494 /* Generate relocs for the dynamic linker, except in
10495 the case of TLSLD where we'll use one entry per
10497 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10500 if ((info->shared || indx != 0)
10502 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10503 || h->elf.root.type != bfd_link_hash_undefweak))
10505 outrel.r_offset = (got->output_section->vma
10506 + got->output_offset
10508 outrel.r_addend = addend;
10509 if (tls_type & (TLS_LD | TLS_GD))
10511 outrel.r_addend = 0;
10512 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
10513 if (tls_type == (TLS_TLS | TLS_GD))
10515 loc = relgot->contents;
10516 loc += (relgot->reloc_count++
10517 * sizeof (Elf64_External_Rela));
10518 bfd_elf64_swap_reloca_out (output_bfd,
10520 outrel.r_offset += 8;
10521 outrel.r_addend = addend;
10523 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10526 else if (tls_type == (TLS_TLS | TLS_DTPREL))
10527 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10528 else if (tls_type == (TLS_TLS | TLS_TPREL))
10529 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10530 else if (indx == 0)
10532 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10534 /* Write the .got section contents for the sake
10536 loc = got->contents + off;
10537 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10541 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
10543 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
10545 outrel.r_addend += relocation;
10546 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
10547 outrel.r_addend -= htab->elf.tls_sec->vma;
10549 loc = relgot->contents;
10550 loc += (relgot->reloc_count++
10551 * sizeof (Elf64_External_Rela));
10552 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10555 /* Init the .got section contents here if we're not
10556 emitting a reloc. */
10559 relocation += addend;
10560 if (tls_type == (TLS_TLS | TLS_LD))
10562 else if (tls_type != 0)
10564 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
10565 if (tls_type == (TLS_TLS | TLS_TPREL))
10566 relocation += DTP_OFFSET - TP_OFFSET;
10568 if (tls_type == (TLS_TLS | TLS_GD))
10570 bfd_put_64 (output_bfd, relocation,
10571 got->contents + off + 8);
10576 bfd_put_64 (output_bfd, relocation,
10577 got->contents + off);
10581 if (off >= (bfd_vma) -2)
10584 relocation = got->output_offset + off;
10586 /* TOC base (r2) is TOC start plus 0x8000. */
10587 addend = -TOC_BASE_OFF;
10591 case R_PPC64_PLT16_HA:
10592 case R_PPC64_PLT16_HI:
10593 case R_PPC64_PLT16_LO:
10594 case R_PPC64_PLT32:
10595 case R_PPC64_PLT64:
10596 /* Relocation is to the entry for this symbol in the
10597 procedure linkage table. */
10599 /* Resolve a PLT reloc against a local symbol directly,
10600 without using the procedure linkage table. */
10604 /* It's possible that we didn't make a PLT entry for this
10605 symbol. This happens when statically linking PIC code,
10606 or when using -Bsymbolic. Go find a match if there is a
10608 if (htab->plt != NULL)
10610 struct plt_entry *ent;
10611 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
10612 if (ent->addend == orig_addend
10613 && ent->plt.offset != (bfd_vma) -1)
10615 relocation = (htab->plt->output_section->vma
10616 + htab->plt->output_offset
10617 + ent->plt.offset);
10618 unresolved_reloc = FALSE;
10624 /* Relocation value is TOC base. */
10625 relocation = TOCstart;
10627 relocation += htab->stub_group[input_section->id].toc_off;
10628 else if (unresolved_reloc)
10630 else if (sec != NULL && sec->id <= htab->top_id)
10631 relocation += htab->stub_group[sec->id].toc_off;
10633 unresolved_reloc = TRUE;
10636 /* TOC16 relocs. We want the offset relative to the TOC base,
10637 which is the address of the start of the TOC plus 0x8000.
10638 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10640 case R_PPC64_TOC16:
10641 case R_PPC64_TOC16_LO:
10642 case R_PPC64_TOC16_HI:
10643 case R_PPC64_TOC16_DS:
10644 case R_PPC64_TOC16_LO_DS:
10645 case R_PPC64_TOC16_HA:
10646 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
10649 /* Relocate against the beginning of the section. */
10650 case R_PPC64_SECTOFF:
10651 case R_PPC64_SECTOFF_LO:
10652 case R_PPC64_SECTOFF_HI:
10653 case R_PPC64_SECTOFF_DS:
10654 case R_PPC64_SECTOFF_LO_DS:
10655 case R_PPC64_SECTOFF_HA:
10657 addend -= sec->output_section->vma;
10660 case R_PPC64_REL14:
10661 case R_PPC64_REL14_BRNTAKEN:
10662 case R_PPC64_REL14_BRTAKEN:
10663 case R_PPC64_REL24:
10666 case R_PPC64_TPREL16:
10667 case R_PPC64_TPREL16_LO:
10668 case R_PPC64_TPREL16_HI:
10669 case R_PPC64_TPREL16_HA:
10670 case R_PPC64_TPREL16_DS:
10671 case R_PPC64_TPREL16_LO_DS:
10672 case R_PPC64_TPREL16_HIGHER:
10673 case R_PPC64_TPREL16_HIGHERA:
10674 case R_PPC64_TPREL16_HIGHEST:
10675 case R_PPC64_TPREL16_HIGHESTA:
10676 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10678 /* The TPREL16 relocs shouldn't really be used in shared
10679 libs as they will result in DT_TEXTREL being set, but
10680 support them anyway. */
10684 case R_PPC64_DTPREL16:
10685 case R_PPC64_DTPREL16_LO:
10686 case R_PPC64_DTPREL16_HI:
10687 case R_PPC64_DTPREL16_HA:
10688 case R_PPC64_DTPREL16_DS:
10689 case R_PPC64_DTPREL16_LO_DS:
10690 case R_PPC64_DTPREL16_HIGHER:
10691 case R_PPC64_DTPREL16_HIGHERA:
10692 case R_PPC64_DTPREL16_HIGHEST:
10693 case R_PPC64_DTPREL16_HIGHESTA:
10694 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10697 case R_PPC64_DTPMOD64:
10702 case R_PPC64_TPREL64:
10703 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10706 case R_PPC64_DTPREL64:
10707 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10710 /* Relocations that may need to be propagated if this is a
10712 case R_PPC64_REL30:
10713 case R_PPC64_REL32:
10714 case R_PPC64_REL64:
10715 case R_PPC64_ADDR14:
10716 case R_PPC64_ADDR14_BRNTAKEN:
10717 case R_PPC64_ADDR14_BRTAKEN:
10718 case R_PPC64_ADDR16:
10719 case R_PPC64_ADDR16_DS:
10720 case R_PPC64_ADDR16_HA:
10721 case R_PPC64_ADDR16_HI:
10722 case R_PPC64_ADDR16_HIGHER:
10723 case R_PPC64_ADDR16_HIGHERA:
10724 case R_PPC64_ADDR16_HIGHEST:
10725 case R_PPC64_ADDR16_HIGHESTA:
10726 case R_PPC64_ADDR16_LO:
10727 case R_PPC64_ADDR16_LO_DS:
10728 case R_PPC64_ADDR24:
10729 case R_PPC64_ADDR32:
10730 case R_PPC64_ADDR64:
10731 case R_PPC64_UADDR16:
10732 case R_PPC64_UADDR32:
10733 case R_PPC64_UADDR64:
10734 /* r_symndx will be zero only for relocs against symbols
10735 from removed linkonce sections, or sections discarded by
10736 a linker script. */
10740 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
10741 contents + rel->r_offset);
10747 if ((input_section->flags & SEC_ALLOC) == 0)
10750 if (NO_OPD_RELOCS && is_opd)
10755 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10756 || h->elf.root.type != bfd_link_hash_undefweak)
10757 && (MUST_BE_DYN_RELOC (r_type)
10758 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
10759 || (ELIMINATE_COPY_RELOCS
10762 && h->elf.dynindx != -1
10763 && !h->elf.non_got_ref
10764 && h->elf.def_dynamic
10765 && !h->elf.def_regular))
10767 Elf_Internal_Rela outrel;
10768 bfd_boolean skip, relocate;
10773 /* When generating a dynamic object, these relocations
10774 are copied into the output file to be resolved at run
10780 out_off = _bfd_elf_section_offset (output_bfd, info,
10781 input_section, rel->r_offset);
10782 if (out_off == (bfd_vma) -1)
10784 else if (out_off == (bfd_vma) -2)
10785 skip = TRUE, relocate = TRUE;
10786 out_off += (input_section->output_section->vma
10787 + input_section->output_offset);
10788 outrel.r_offset = out_off;
10789 outrel.r_addend = rel->r_addend;
10791 /* Optimize unaligned reloc use. */
10792 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10793 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10794 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10795 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10796 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10797 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10798 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10799 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10800 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10803 memset (&outrel, 0, sizeof outrel);
10804 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
10806 && r_type != R_PPC64_TOC)
10807 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
10810 /* This symbol is local, or marked to become local,
10811 or this is an opd section reloc which must point
10812 at a local function. */
10813 outrel.r_addend += relocation;
10814 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
10816 if (is_opd && h != NULL)
10818 /* Lie about opd entries. This case occurs
10819 when building shared libraries and we
10820 reference a function in another shared
10821 lib. The same thing happens for a weak
10822 definition in an application that's
10823 overridden by a strong definition in a
10824 shared lib. (I believe this is a generic
10825 bug in binutils handling of weak syms.)
10826 In these cases we won't use the opd
10827 entry in this lib. */
10828 unresolved_reloc = FALSE;
10830 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10832 /* We need to relocate .opd contents for ld.so.
10833 Prelink also wants simple and consistent rules
10834 for relocs. This make all RELATIVE relocs have
10835 *r_offset equal to r_addend. */
10842 if (bfd_is_abs_section (sec))
10844 else if (sec == NULL || sec->owner == NULL)
10846 bfd_set_error (bfd_error_bad_value);
10853 osec = sec->output_section;
10854 indx = elf_section_data (osec)->dynindx;
10858 if ((osec->flags & SEC_READONLY) == 0
10859 && htab->elf.data_index_section != NULL)
10860 osec = htab->elf.data_index_section;
10862 osec = htab->elf.text_index_section;
10863 indx = elf_section_data (osec)->dynindx;
10865 BFD_ASSERT (indx != 0);
10867 /* We are turning this relocation into one
10868 against a section symbol, so subtract out
10869 the output section's address but not the
10870 offset of the input section in the output
10872 outrel.r_addend -= osec->vma;
10875 outrel.r_info = ELF64_R_INFO (indx, r_type);
10879 sreloc = elf_section_data (input_section)->sreloc;
10880 if (sreloc == NULL)
10883 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
10886 loc = sreloc->contents;
10887 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
10888 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10890 /* If this reloc is against an external symbol, it will
10891 be computed at runtime, so there's no need to do
10892 anything now. However, for the sake of prelink ensure
10893 that the section contents are a known value. */
10896 unresolved_reloc = FALSE;
10897 /* The value chosen here is quite arbitrary as ld.so
10898 ignores section contents except for the special
10899 case of .opd where the contents might be accessed
10900 before relocation. Choose zero, as that won't
10901 cause reloc overflow. */
10904 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10905 to improve backward compatibility with older
10907 if (r_type == R_PPC64_ADDR64)
10908 addend = outrel.r_addend;
10909 /* Adjust pc_relative relocs to have zero in *r_offset. */
10910 else if (ppc64_elf_howto_table[r_type]->pc_relative)
10911 addend = (input_section->output_section->vma
10912 + input_section->output_offset
10919 case R_PPC64_GLOB_DAT:
10920 case R_PPC64_JMP_SLOT:
10921 case R_PPC64_RELATIVE:
10922 /* We shouldn't ever see these dynamic relocs in relocatable
10924 /* Fall through. */
10926 case R_PPC64_PLTGOT16:
10927 case R_PPC64_PLTGOT16_DS:
10928 case R_PPC64_PLTGOT16_HA:
10929 case R_PPC64_PLTGOT16_HI:
10930 case R_PPC64_PLTGOT16_LO:
10931 case R_PPC64_PLTGOT16_LO_DS:
10932 case R_PPC64_PLTREL32:
10933 case R_PPC64_PLTREL64:
10934 /* These ones haven't been implemented yet. */
10936 (*_bfd_error_handler)
10937 (_("%B: relocation %s is not supported for symbol %s."),
10939 ppc64_elf_howto_table[r_type]->name, sym_name);
10941 bfd_set_error (bfd_error_invalid_operation);
10946 /* Do any further special processing. */
10952 case R_PPC64_ADDR16_HA:
10953 case R_PPC64_ADDR16_HIGHERA:
10954 case R_PPC64_ADDR16_HIGHESTA:
10955 case R_PPC64_TOC16_HA:
10956 case R_PPC64_SECTOFF_HA:
10957 case R_PPC64_TPREL16_HA:
10958 case R_PPC64_DTPREL16_HA:
10959 case R_PPC64_TPREL16_HIGHER:
10960 case R_PPC64_TPREL16_HIGHERA:
10961 case R_PPC64_TPREL16_HIGHEST:
10962 case R_PPC64_TPREL16_HIGHESTA:
10963 case R_PPC64_DTPREL16_HIGHER:
10964 case R_PPC64_DTPREL16_HIGHERA:
10965 case R_PPC64_DTPREL16_HIGHEST:
10966 case R_PPC64_DTPREL16_HIGHESTA:
10967 /* It's just possible that this symbol is a weak symbol
10968 that's not actually defined anywhere. In that case,
10969 'sec' would be NULL, and we should leave the symbol
10970 alone (it will be set to zero elsewhere in the link). */
10975 case R_PPC64_GOT16_HA:
10976 case R_PPC64_PLTGOT16_HA:
10977 case R_PPC64_PLT16_HA:
10978 case R_PPC64_GOT_TLSGD16_HA:
10979 case R_PPC64_GOT_TLSLD16_HA:
10980 case R_PPC64_GOT_TPREL16_HA:
10981 case R_PPC64_GOT_DTPREL16_HA:
10982 /* Add 0x10000 if sign bit in 0:15 is set.
10983 Bits 0:15 are not used. */
10987 case R_PPC64_ADDR16_DS:
10988 case R_PPC64_ADDR16_LO_DS:
10989 case R_PPC64_GOT16_DS:
10990 case R_PPC64_GOT16_LO_DS:
10991 case R_PPC64_PLT16_LO_DS:
10992 case R_PPC64_SECTOFF_DS:
10993 case R_PPC64_SECTOFF_LO_DS:
10994 case R_PPC64_TOC16_DS:
10995 case R_PPC64_TOC16_LO_DS:
10996 case R_PPC64_PLTGOT16_DS:
10997 case R_PPC64_PLTGOT16_LO_DS:
10998 case R_PPC64_GOT_TPREL16_DS:
10999 case R_PPC64_GOT_TPREL16_LO_DS:
11000 case R_PPC64_GOT_DTPREL16_DS:
11001 case R_PPC64_GOT_DTPREL16_LO_DS:
11002 case R_PPC64_TPREL16_DS:
11003 case R_PPC64_TPREL16_LO_DS:
11004 case R_PPC64_DTPREL16_DS:
11005 case R_PPC64_DTPREL16_LO_DS:
11006 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11008 /* If this reloc is against an lq insn, then the value must be
11009 a multiple of 16. This is somewhat of a hack, but the
11010 "correct" way to do this by defining _DQ forms of all the
11011 _DS relocs bloats all reloc switches in this file. It
11012 doesn't seem to make much sense to use any of these relocs
11013 in data, so testing the insn should be safe. */
11014 if ((insn & (0x3f << 26)) == (56u << 26))
11016 if (((relocation + addend) & mask) != 0)
11018 (*_bfd_error_handler)
11019 (_("%B: error: relocation %s not a multiple of %d"),
11021 ppc64_elf_howto_table[r_type]->name,
11023 bfd_set_error (bfd_error_bad_value);
11030 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11031 because such sections are not SEC_ALLOC and thus ld.so will
11032 not process them. */
11033 if (unresolved_reloc
11034 && !((input_section->flags & SEC_DEBUGGING) != 0
11035 && h->elf.def_dynamic))
11037 (*_bfd_error_handler)
11038 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11041 (long) rel->r_offset,
11042 ppc64_elf_howto_table[(int) r_type]->name,
11043 h->elf.root.root.string);
11047 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
11055 if (r != bfd_reloc_ok)
11057 if (sym_name == NULL)
11058 sym_name = "(null)";
11059 if (r == bfd_reloc_overflow)
11064 && h->elf.root.type == bfd_link_hash_undefweak
11065 && ppc64_elf_howto_table[r_type]->pc_relative)
11067 /* Assume this is a call protected by other code that
11068 detects the symbol is undefined. If this is the case,
11069 we can safely ignore the overflow. If not, the
11070 program is hosed anyway, and a little warning isn't
11076 if (!((*info->callbacks->reloc_overflow)
11077 (info, (h ? &h->elf.root : NULL), sym_name,
11078 ppc64_elf_howto_table[r_type]->name,
11079 orig_addend, input_bfd, input_section, rel->r_offset)))
11084 (*_bfd_error_handler)
11085 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11088 (long) rel->r_offset,
11089 ppc64_elf_howto_table[r_type]->name,
11097 /* If we're emitting relocations, then shortly after this function
11098 returns, reloc offsets and addends for this section will be
11099 adjusted. Worse, reloc symbol indices will be for the output
11100 file rather than the input. Save a copy of the relocs for
11101 opd_entry_value. */
11102 if (is_opd && (info->emitrelocations || info->relocatable))
11105 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11106 rel = bfd_alloc (input_bfd, amt);
11107 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11108 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11111 memcpy (rel, relocs, amt);
11116 /* Adjust the value of any local symbols in opd sections. */
11119 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11120 const char *name ATTRIBUTE_UNUSED,
11121 Elf_Internal_Sym *elfsym,
11122 asection *input_sec,
11123 struct elf_link_hash_entry *h)
11125 long *opd_adjust, adjust;
11131 opd_adjust = get_opd_info (input_sec);
11132 if (opd_adjust == NULL)
11135 value = elfsym->st_value - input_sec->output_offset;
11136 if (!info->relocatable)
11137 value -= input_sec->output_section->vma;
11139 adjust = opd_adjust[value / 8];
11141 elfsym->st_value = 0;
11143 elfsym->st_value += adjust;
11147 /* Finish up dynamic symbol handling. We set the contents of various
11148 dynamic sections here. */
11151 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11152 struct bfd_link_info *info,
11153 struct elf_link_hash_entry *h,
11154 Elf_Internal_Sym *sym)
11156 struct ppc_link_hash_table *htab;
11157 struct plt_entry *ent;
11158 Elf_Internal_Rela rela;
11161 htab = ppc_hash_table (info);
11163 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11164 if (ent->plt.offset != (bfd_vma) -1)
11166 /* This symbol has an entry in the procedure linkage
11167 table. Set it up. */
11169 if (htab->plt == NULL
11170 || htab->relplt == NULL
11171 || htab->glink == NULL)
11174 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11175 fill in the PLT entry. */
11176 rela.r_offset = (htab->plt->output_section->vma
11177 + htab->plt->output_offset
11178 + ent->plt.offset);
11179 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11180 rela.r_addend = ent->addend;
11182 loc = htab->relplt->contents;
11183 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11184 * sizeof (Elf64_External_Rela));
11185 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11190 Elf_Internal_Rela rela;
11193 /* This symbol needs a copy reloc. Set it up. */
11195 if (h->dynindx == -1
11196 || (h->root.type != bfd_link_hash_defined
11197 && h->root.type != bfd_link_hash_defweak)
11198 || htab->relbss == NULL)
11201 rela.r_offset = (h->root.u.def.value
11202 + h->root.u.def.section->output_section->vma
11203 + h->root.u.def.section->output_offset);
11204 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11206 loc = htab->relbss->contents;
11207 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
11208 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11211 /* Mark some specially defined symbols as absolute. */
11212 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11213 sym->st_shndx = SHN_ABS;
11218 /* Used to decide how to sort relocs in an optimal manner for the
11219 dynamic linker, before writing them out. */
11221 static enum elf_reloc_type_class
11222 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
11224 enum elf_ppc64_reloc_type r_type;
11226 r_type = ELF64_R_TYPE (rela->r_info);
11229 case R_PPC64_RELATIVE:
11230 return reloc_class_relative;
11231 case R_PPC64_JMP_SLOT:
11232 return reloc_class_plt;
11234 return reloc_class_copy;
11236 return reloc_class_normal;
11240 /* Finish up the dynamic sections. */
11243 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11244 struct bfd_link_info *info)
11246 struct ppc_link_hash_table *htab;
11250 htab = ppc_hash_table (info);
11251 dynobj = htab->elf.dynobj;
11252 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11254 if (htab->elf.dynamic_sections_created)
11256 Elf64_External_Dyn *dyncon, *dynconend;
11258 if (sdyn == NULL || htab->got == NULL)
11261 dyncon = (Elf64_External_Dyn *) sdyn->contents;
11262 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
11263 for (; dyncon < dynconend; dyncon++)
11265 Elf_Internal_Dyn dyn;
11268 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11275 case DT_PPC64_GLINK:
11277 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11278 /* We stupidly defined DT_PPC64_GLINK to be the start
11279 of glink rather than the first entry point, which is
11280 what ld.so needs, and now have a bigger stub to
11281 support automatic multiple TOCs. */
11282 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
11286 s = bfd_get_section_by_name (output_bfd, ".opd");
11289 dyn.d_un.d_ptr = s->vma;
11292 case DT_PPC64_OPDSZ:
11293 s = bfd_get_section_by_name (output_bfd, ".opd");
11296 dyn.d_un.d_val = s->size;
11301 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11306 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11310 dyn.d_un.d_val = htab->relplt->size;
11314 /* Don't count procedure linkage table relocs in the
11315 overall reloc count. */
11319 dyn.d_un.d_val -= s->size;
11323 /* We may not be using the standard ELF linker script.
11324 If .rela.plt is the first .rela section, we adjust
11325 DT_RELA to not include it. */
11329 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11331 dyn.d_un.d_ptr += s->size;
11335 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
11339 if (htab->got != NULL && htab->got->size != 0)
11341 /* Fill in the first entry in the global offset table.
11342 We use it to hold the link-time TOCbase. */
11343 bfd_put_64 (output_bfd,
11344 elf_gp (output_bfd) + TOC_BASE_OFF,
11345 htab->got->contents);
11347 /* Set .got entry size. */
11348 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
11351 if (htab->plt != NULL && htab->plt->size != 0)
11353 /* Set .plt entry size. */
11354 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
11358 /* We need to handle writing out multiple GOT sections ourselves,
11359 since we didn't add them to DYNOBJ. We know dynobj is the first
11361 while ((dynobj = dynobj->link_next) != NULL)
11365 if (!is_ppc64_elf_target (dynobj->xvec))
11368 s = ppc64_elf_tdata (dynobj)->got;
11371 && s->output_section != bfd_abs_section_ptr
11372 && !bfd_set_section_contents (output_bfd, s->output_section,
11373 s->contents, s->output_offset,
11376 s = ppc64_elf_tdata (dynobj)->relgot;
11379 && s->output_section != bfd_abs_section_ptr
11380 && !bfd_set_section_contents (output_bfd, s->output_section,
11381 s->contents, s->output_offset,
11389 #include "elf64-target.h"