1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
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 3 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. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *);
59 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x1000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
85 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
86 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_process_dot_syms
98 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
108 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
109 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
110 #define elf_backend_action_discarded ppc64_elf_action_discarded
111 #define elf_backend_relocate_section ppc64_elf_relocate_section
112 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
113 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
114 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
115 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
116 #define elf_backend_special_sections ppc64_elf_special_sections
117 #define elf_backend_post_process_headers _bfd_elf_set_osabi
119 /* The name of the dynamic interpreter. This is put in the .interp
121 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
123 /* The size in bytes of an entry in the procedure linkage table. */
124 #define PLT_ENTRY_SIZE 24
126 /* The initial size of the plt reserved for the dynamic linker. */
127 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
129 /* TOC base pointers offset from start of TOC. */
130 #define TOC_BASE_OFF 0x8000
132 /* Offset of tp and dtp pointers from start of TLS block. */
133 #define TP_OFFSET 0x7000
134 #define DTP_OFFSET 0x8000
136 /* .plt call stub instructions. The normal stub is like this, but
137 sometimes the .plt entry crosses a 64k boundary and we need to
138 insert an addi to adjust r12. */
139 #define PLT_CALL_STUB_SIZE (7*4)
140 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
141 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
142 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
143 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
144 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
145 /* ld %r11,xxx+16@l(%r12) */
146 #define BCTR 0x4e800420 /* bctr */
149 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
150 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
151 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
152 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
154 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
155 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
157 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
159 /* glink call stub instructions. We enter with the index in R0. */
160 #define GLINK_CALL_STUB_SIZE (16*4)
164 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
165 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
167 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
168 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
169 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
170 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
178 #define NOP 0x60000000
180 /* Some other nops. */
181 #define CROR_151515 0x4def7b82
182 #define CROR_313131 0x4ffffb82
184 /* .glink entries for the first 32k functions are two instructions. */
185 #define LI_R0_0 0x38000000 /* li %r0,0 */
186 #define B_DOT 0x48000000 /* b . */
188 /* After that, we need two instructions to load the index, followed by
190 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
191 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
193 /* Instructions used by the save and restore reg functions. */
194 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
195 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
196 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
197 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
198 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
199 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
200 #define LI_R12_0 0x39800000 /* li %r12,0 */
201 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
202 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
203 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
204 #define BLR 0x4e800020 /* blr */
206 /* Since .opd is an array of descriptors and each entry will end up
207 with identical R_PPC64_RELATIVE relocs, there is really no need to
208 propagate .opd relocs; The dynamic linker should be taught to
209 relocate .opd without reloc entries. */
210 #ifndef NO_OPD_RELOCS
211 #define NO_OPD_RELOCS 0
214 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
216 /* Relocation HOWTO's. */
217 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
219 static reloc_howto_type ppc64_elf_howto_raw[] = {
220 /* This reloc does nothing. */
221 HOWTO (R_PPC64_NONE, /* type */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
225 FALSE, /* pc_relative */
227 complain_overflow_dont, /* complain_on_overflow */
228 bfd_elf_generic_reloc, /* special_function */
229 "R_PPC64_NONE", /* name */
230 FALSE, /* partial_inplace */
233 FALSE), /* pcrel_offset */
235 /* A standard 32 bit relocation. */
236 HOWTO (R_PPC64_ADDR32, /* type */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
240 FALSE, /* pc_relative */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC64_ADDR32", /* name */
245 FALSE, /* partial_inplace */
247 0xffffffff, /* dst_mask */
248 FALSE), /* pcrel_offset */
250 /* An absolute 26 bit branch; the lower two bits must be zero.
251 FIXME: we don't check that, we just clear them. */
252 HOWTO (R_PPC64_ADDR24, /* type */
254 2, /* size (0 = byte, 1 = short, 2 = long) */
256 FALSE, /* pc_relative */
258 complain_overflow_bitfield, /* complain_on_overflow */
259 bfd_elf_generic_reloc, /* special_function */
260 "R_PPC64_ADDR24", /* name */
261 FALSE, /* partial_inplace */
263 0x03fffffc, /* dst_mask */
264 FALSE), /* pcrel_offset */
266 /* A standard 16 bit relocation. */
267 HOWTO (R_PPC64_ADDR16, /* type */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
271 FALSE, /* pc_relative */
273 complain_overflow_bitfield, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC64_ADDR16", /* name */
276 FALSE, /* partial_inplace */
278 0xffff, /* dst_mask */
279 FALSE), /* pcrel_offset */
281 /* A 16 bit relocation without overflow. */
282 HOWTO (R_PPC64_ADDR16_LO, /* type */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
286 FALSE, /* pc_relative */
288 complain_overflow_dont,/* complain_on_overflow */
289 bfd_elf_generic_reloc, /* special_function */
290 "R_PPC64_ADDR16_LO", /* name */
291 FALSE, /* partial_inplace */
293 0xffff, /* dst_mask */
294 FALSE), /* pcrel_offset */
296 /* Bits 16-31 of an address. */
297 HOWTO (R_PPC64_ADDR16_HI, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE, /* pc_relative */
303 complain_overflow_dont, /* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_PPC64_ADDR16_HI", /* name */
306 FALSE, /* partial_inplace */
308 0xffff, /* dst_mask */
309 FALSE), /* pcrel_offset */
311 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
312 bits, treated as a signed number, is negative. */
313 HOWTO (R_PPC64_ADDR16_HA, /* type */
315 1, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_dont, /* complain_on_overflow */
320 ppc64_elf_ha_reloc, /* special_function */
321 "R_PPC64_ADDR16_HA", /* name */
322 FALSE, /* partial_inplace */
324 0xffff, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* An absolute 16 bit branch; the lower two bits must be zero.
328 FIXME: we don't check that, we just clear them. */
329 HOWTO (R_PPC64_ADDR14, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE, /* pc_relative */
335 complain_overflow_bitfield, /* complain_on_overflow */
336 ppc64_elf_branch_reloc, /* special_function */
337 "R_PPC64_ADDR14", /* name */
338 FALSE, /* partial_inplace */
340 0x0000fffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is expected to be taken. The lower two
345 bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_bitfield, /* complain_on_overflow */
353 ppc64_elf_brtaken_reloc, /* special_function */
354 "R_PPC64_ADDR14_BRTAKEN",/* name */
355 FALSE, /* partial_inplace */
357 0x0000fffc, /* dst_mask */
358 FALSE), /* pcrel_offset */
360 /* An absolute 16 bit branch, for which bit 10 should be set to
361 indicate that the branch is not expected to be taken. The lower
362 two bits must be zero. */
363 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 FALSE, /* pc_relative */
369 complain_overflow_bitfield, /* complain_on_overflow */
370 ppc64_elf_brtaken_reloc, /* special_function */
371 "R_PPC64_ADDR14_BRNTAKEN",/* name */
372 FALSE, /* partial_inplace */
374 0x0000fffc, /* dst_mask */
375 FALSE), /* pcrel_offset */
377 /* A relative 26 bit branch; the lower two bits must be zero. */
378 HOWTO (R_PPC64_REL24, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 TRUE, /* pc_relative */
384 complain_overflow_signed, /* complain_on_overflow */
385 ppc64_elf_branch_reloc, /* special_function */
386 "R_PPC64_REL24", /* name */
387 FALSE, /* partial_inplace */
389 0x03fffffc, /* dst_mask */
390 TRUE), /* pcrel_offset */
392 /* A relative 16 bit branch; the lower two bits must be zero. */
393 HOWTO (R_PPC64_REL14, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE, /* pc_relative */
399 complain_overflow_signed, /* complain_on_overflow */
400 ppc64_elf_branch_reloc, /* special_function */
401 "R_PPC64_REL14", /* name */
402 FALSE, /* partial_inplace */
404 0x0000fffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is expected to be taken. The lower two bits must be
410 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
414 TRUE, /* pc_relative */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc64_elf_brtaken_reloc, /* special_function */
418 "R_PPC64_REL14_BRTAKEN", /* name */
419 FALSE, /* partial_inplace */
421 0x0000fffc, /* dst_mask */
422 TRUE), /* pcrel_offset */
424 /* A relative 16 bit branch. Bit 10 should be set to indicate that
425 the branch is not expected to be taken. The lower two bits must
427 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
431 TRUE, /* pc_relative */
433 complain_overflow_signed, /* complain_on_overflow */
434 ppc64_elf_brtaken_reloc, /* special_function */
435 "R_PPC64_REL14_BRNTAKEN",/* name */
436 FALSE, /* partial_inplace */
438 0x0000fffc, /* dst_mask */
439 TRUE), /* pcrel_offset */
441 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
443 HOWTO (R_PPC64_GOT16, /* type */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE, /* pc_relative */
449 complain_overflow_signed, /* complain_on_overflow */
450 ppc64_elf_unhandled_reloc, /* special_function */
451 "R_PPC64_GOT16", /* name */
452 FALSE, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
457 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
459 HOWTO (R_PPC64_GOT16_LO, /* type */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
463 FALSE, /* pc_relative */
465 complain_overflow_dont, /* complain_on_overflow */
466 ppc64_elf_unhandled_reloc, /* special_function */
467 "R_PPC64_GOT16_LO", /* name */
468 FALSE, /* partial_inplace */
470 0xffff, /* dst_mask */
471 FALSE), /* pcrel_offset */
473 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
475 HOWTO (R_PPC64_GOT16_HI, /* type */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE, /* pc_relative */
481 complain_overflow_dont,/* complain_on_overflow */
482 ppc64_elf_unhandled_reloc, /* special_function */
483 "R_PPC64_GOT16_HI", /* name */
484 FALSE, /* partial_inplace */
486 0xffff, /* dst_mask */
487 FALSE), /* pcrel_offset */
489 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
491 HOWTO (R_PPC64_GOT16_HA, /* type */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE, /* pc_relative */
497 complain_overflow_dont,/* complain_on_overflow */
498 ppc64_elf_unhandled_reloc, /* special_function */
499 "R_PPC64_GOT16_HA", /* name */
500 FALSE, /* partial_inplace */
502 0xffff, /* dst_mask */
503 FALSE), /* pcrel_offset */
505 /* This is used only by the dynamic linker. The symbol should exist
506 both in the object being run and in some shared library. The
507 dynamic linker copies the data addressed by the symbol from the
508 shared library into the object, because the object being
509 run has to have the data at some particular address. */
510 HOWTO (R_PPC64_COPY, /* type */
512 0, /* this one is variable size */
514 FALSE, /* pc_relative */
516 complain_overflow_dont, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc, /* special_function */
518 "R_PPC64_COPY", /* name */
519 FALSE, /* partial_inplace */
522 FALSE), /* pcrel_offset */
524 /* Like R_PPC64_ADDR64, but used when setting global offset table
526 HOWTO (R_PPC64_GLOB_DAT, /* type */
528 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
530 FALSE, /* pc_relative */
532 complain_overflow_dont, /* complain_on_overflow */
533 ppc64_elf_unhandled_reloc, /* special_function */
534 "R_PPC64_GLOB_DAT", /* name */
535 FALSE, /* partial_inplace */
537 ONES (64), /* dst_mask */
538 FALSE), /* pcrel_offset */
540 /* Created by the link editor. Marks a procedure linkage table
541 entry for a symbol. */
542 HOWTO (R_PPC64_JMP_SLOT, /* type */
544 0, /* size (0 = byte, 1 = short, 2 = long) */
546 FALSE, /* pc_relative */
548 complain_overflow_dont, /* complain_on_overflow */
549 ppc64_elf_unhandled_reloc, /* special_function */
550 "R_PPC64_JMP_SLOT", /* name */
551 FALSE, /* partial_inplace */
554 FALSE), /* pcrel_offset */
556 /* Used only by the dynamic linker. When the object is run, this
557 doubleword64 is set to the load address of the object, plus the
559 HOWTO (R_PPC64_RELATIVE, /* type */
561 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
563 FALSE, /* pc_relative */
565 complain_overflow_dont, /* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_PPC64_RELATIVE", /* name */
568 FALSE, /* partial_inplace */
570 ONES (64), /* dst_mask */
571 FALSE), /* pcrel_offset */
573 /* Like R_PPC64_ADDR32, but may be unaligned. */
574 HOWTO (R_PPC64_UADDR32, /* type */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
578 FALSE, /* pc_relative */
580 complain_overflow_bitfield, /* complain_on_overflow */
581 bfd_elf_generic_reloc, /* special_function */
582 "R_PPC64_UADDR32", /* name */
583 FALSE, /* partial_inplace */
585 0xffffffff, /* dst_mask */
586 FALSE), /* pcrel_offset */
588 /* Like R_PPC64_ADDR16, but may be unaligned. */
589 HOWTO (R_PPC64_UADDR16, /* type */
591 1, /* size (0 = byte, 1 = short, 2 = long) */
593 FALSE, /* pc_relative */
595 complain_overflow_bitfield, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_PPC64_UADDR16", /* name */
598 FALSE, /* partial_inplace */
600 0xffff, /* dst_mask */
601 FALSE), /* pcrel_offset */
603 /* 32-bit PC relative. */
604 HOWTO (R_PPC64_REL32, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 TRUE, /* pc_relative */
610 /* FIXME: Verify. Was complain_overflow_bitfield. */
611 complain_overflow_signed, /* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
613 "R_PPC64_REL32", /* name */
614 FALSE, /* partial_inplace */
616 0xffffffff, /* dst_mask */
617 TRUE), /* pcrel_offset */
619 /* 32-bit relocation to the symbol's procedure linkage table. */
620 HOWTO (R_PPC64_PLT32, /* type */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
624 FALSE, /* pc_relative */
626 complain_overflow_bitfield, /* complain_on_overflow */
627 ppc64_elf_unhandled_reloc, /* special_function */
628 "R_PPC64_PLT32", /* name */
629 FALSE, /* partial_inplace */
631 0xffffffff, /* dst_mask */
632 FALSE), /* pcrel_offset */
634 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
635 FIXME: R_PPC64_PLTREL32 not supported. */
636 HOWTO (R_PPC64_PLTREL32, /* type */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
640 TRUE, /* pc_relative */
642 complain_overflow_signed, /* complain_on_overflow */
643 bfd_elf_generic_reloc, /* special_function */
644 "R_PPC64_PLTREL32", /* name */
645 FALSE, /* partial_inplace */
647 0xffffffff, /* dst_mask */
648 TRUE), /* pcrel_offset */
650 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
652 HOWTO (R_PPC64_PLT16_LO, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE, /* pc_relative */
658 complain_overflow_dont, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc, /* special_function */
660 "R_PPC64_PLT16_LO", /* name */
661 FALSE, /* partial_inplace */
663 0xffff, /* dst_mask */
664 FALSE), /* pcrel_offset */
666 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
668 HOWTO (R_PPC64_PLT16_HI, /* type */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE, /* pc_relative */
674 complain_overflow_dont, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc, /* special_function */
676 "R_PPC64_PLT16_HI", /* name */
677 FALSE, /* partial_inplace */
679 0xffff, /* dst_mask */
680 FALSE), /* pcrel_offset */
682 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
684 HOWTO (R_PPC64_PLT16_HA, /* type */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
688 FALSE, /* pc_relative */
690 complain_overflow_dont, /* complain_on_overflow */
691 ppc64_elf_unhandled_reloc, /* special_function */
692 "R_PPC64_PLT16_HA", /* name */
693 FALSE, /* partial_inplace */
695 0xffff, /* dst_mask */
696 FALSE), /* pcrel_offset */
698 /* 16-bit section relative relocation. */
699 HOWTO (R_PPC64_SECTOFF, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_bitfield, /* complain_on_overflow */
706 ppc64_elf_sectoff_reloc, /* special_function */
707 "R_PPC64_SECTOFF", /* name */
708 FALSE, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 /* Like R_PPC64_SECTOFF, but no overflow warning. */
714 HOWTO (R_PPC64_SECTOFF_LO, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE, /* pc_relative */
720 complain_overflow_dont, /* complain_on_overflow */
721 ppc64_elf_sectoff_reloc, /* special_function */
722 "R_PPC64_SECTOFF_LO", /* name */
723 FALSE, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
728 /* 16-bit upper half section relative relocation. */
729 HOWTO (R_PPC64_SECTOFF_HI, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE, /* pc_relative */
735 complain_overflow_dont, /* complain_on_overflow */
736 ppc64_elf_sectoff_reloc, /* special_function */
737 "R_PPC64_SECTOFF_HI", /* name */
738 FALSE, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
743 /* 16-bit upper half adjusted section relative relocation. */
744 HOWTO (R_PPC64_SECTOFF_HA, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE, /* pc_relative */
750 complain_overflow_dont, /* complain_on_overflow */
751 ppc64_elf_sectoff_ha_reloc, /* special_function */
752 "R_PPC64_SECTOFF_HA", /* name */
753 FALSE, /* partial_inplace */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
758 /* Like R_PPC64_REL24 without touching the two least significant bits. */
759 HOWTO (R_PPC64_REL30, /* type */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
763 TRUE, /* pc_relative */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_PPC64_REL30", /* name */
768 FALSE, /* partial_inplace */
770 0xfffffffc, /* dst_mask */
771 TRUE), /* pcrel_offset */
773 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
775 /* A standard 64-bit relocation. */
776 HOWTO (R_PPC64_ADDR64, /* type */
778 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
780 FALSE, /* pc_relative */
782 complain_overflow_dont, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_PPC64_ADDR64", /* name */
785 FALSE, /* partial_inplace */
787 ONES (64), /* dst_mask */
788 FALSE), /* pcrel_offset */
790 /* The bits 32-47 of an address. */
791 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE, /* pc_relative */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC64_ADDR16_HIGHER", /* name */
800 FALSE, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
805 /* The bits 32-47 of an address, plus 1 if the contents of the low
806 16 bits, treated as a signed number, is negative. */
807 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
809 1, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE, /* pc_relative */
813 complain_overflow_dont, /* complain_on_overflow */
814 ppc64_elf_ha_reloc, /* special_function */
815 "R_PPC64_ADDR16_HIGHERA", /* name */
816 FALSE, /* partial_inplace */
818 0xffff, /* dst_mask */
819 FALSE), /* pcrel_offset */
821 /* The bits 48-63 of an address. */
822 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE, /* pc_relative */
828 complain_overflow_dont, /* complain_on_overflow */
829 bfd_elf_generic_reloc, /* special_function */
830 "R_PPC64_ADDR16_HIGHEST", /* name */
831 FALSE, /* partial_inplace */
833 0xffff, /* dst_mask */
834 FALSE), /* pcrel_offset */
836 /* The bits 48-63 of an address, plus 1 if the contents of the low
837 16 bits, treated as a signed number, is negative. */
838 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE, /* pc_relative */
844 complain_overflow_dont, /* complain_on_overflow */
845 ppc64_elf_ha_reloc, /* special_function */
846 "R_PPC64_ADDR16_HIGHESTA", /* name */
847 FALSE, /* partial_inplace */
849 0xffff, /* dst_mask */
850 FALSE), /* pcrel_offset */
852 /* Like ADDR64, but may be unaligned. */
853 HOWTO (R_PPC64_UADDR64, /* type */
855 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
857 FALSE, /* pc_relative */
859 complain_overflow_dont, /* complain_on_overflow */
860 bfd_elf_generic_reloc, /* special_function */
861 "R_PPC64_UADDR64", /* name */
862 FALSE, /* partial_inplace */
864 ONES (64), /* dst_mask */
865 FALSE), /* pcrel_offset */
867 /* 64-bit relative relocation. */
868 HOWTO (R_PPC64_REL64, /* type */
870 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
872 TRUE, /* pc_relative */
874 complain_overflow_dont, /* complain_on_overflow */
875 bfd_elf_generic_reloc, /* special_function */
876 "R_PPC64_REL64", /* name */
877 FALSE, /* partial_inplace */
879 ONES (64), /* dst_mask */
880 TRUE), /* pcrel_offset */
882 /* 64-bit relocation to the symbol's procedure linkage table. */
883 HOWTO (R_PPC64_PLT64, /* type */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
887 FALSE, /* pc_relative */
889 complain_overflow_dont, /* complain_on_overflow */
890 ppc64_elf_unhandled_reloc, /* special_function */
891 "R_PPC64_PLT64", /* name */
892 FALSE, /* partial_inplace */
894 ONES (64), /* dst_mask */
895 FALSE), /* pcrel_offset */
897 /* 64-bit PC relative relocation to the symbol's procedure linkage
899 /* FIXME: R_PPC64_PLTREL64 not supported. */
900 HOWTO (R_PPC64_PLTREL64, /* type */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
904 TRUE, /* pc_relative */
906 complain_overflow_dont, /* complain_on_overflow */
907 ppc64_elf_unhandled_reloc, /* special_function */
908 "R_PPC64_PLTREL64", /* name */
909 FALSE, /* partial_inplace */
911 ONES (64), /* dst_mask */
912 TRUE), /* pcrel_offset */
914 /* 16 bit TOC-relative relocation. */
916 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
917 HOWTO (R_PPC64_TOC16, /* type */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE, /* pc_relative */
923 complain_overflow_signed, /* complain_on_overflow */
924 ppc64_elf_toc_reloc, /* special_function */
925 "R_PPC64_TOC16", /* name */
926 FALSE, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
931 /* 16 bit TOC-relative relocation without overflow. */
933 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_LO, /* type */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE, /* pc_relative */
940 complain_overflow_dont, /* complain_on_overflow */
941 ppc64_elf_toc_reloc, /* special_function */
942 "R_PPC64_TOC16_LO", /* name */
943 FALSE, /* partial_inplace */
945 0xffff, /* dst_mask */
946 FALSE), /* pcrel_offset */
948 /* 16 bit TOC-relative relocation, high 16 bits. */
950 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
951 HOWTO (R_PPC64_TOC16_HI, /* type */
953 1, /* size (0 = byte, 1 = short, 2 = long) */
955 FALSE, /* pc_relative */
957 complain_overflow_dont, /* complain_on_overflow */
958 ppc64_elf_toc_reloc, /* special_function */
959 "R_PPC64_TOC16_HI", /* name */
960 FALSE, /* partial_inplace */
962 0xffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
965 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
966 contents of the low 16 bits, treated as a signed number, is
969 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
970 HOWTO (R_PPC64_TOC16_HA, /* type */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE, /* pc_relative */
976 complain_overflow_dont, /* complain_on_overflow */
977 ppc64_elf_toc_ha_reloc, /* special_function */
978 "R_PPC64_TOC16_HA", /* name */
979 FALSE, /* partial_inplace */
981 0xffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
984 /* 64-bit relocation; insert value of TOC base (.TOC.). */
986 /* R_PPC64_TOC 51 doubleword64 .TOC. */
987 HOWTO (R_PPC64_TOC, /* type */
989 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
991 FALSE, /* pc_relative */
993 complain_overflow_bitfield, /* complain_on_overflow */
994 ppc64_elf_toc64_reloc, /* special_function */
995 "R_PPC64_TOC", /* name */
996 FALSE, /* partial_inplace */
998 ONES (64), /* dst_mask */
999 FALSE), /* pcrel_offset */
1001 /* Like R_PPC64_GOT16, but also informs the link editor that the
1002 value to relocate may (!) refer to a PLT entry which the link
1003 editor (a) may replace with the symbol value. If the link editor
1004 is unable to fully resolve the symbol, it may (b) create a PLT
1005 entry and store the address to the new PLT entry in the GOT.
1006 This permits lazy resolution of function symbols at run time.
1007 The link editor may also skip all of this and just (c) emit a
1008 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1009 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16, /* type */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE, /* pc_relative */
1016 complain_overflow_signed, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc, /* special_function */
1018 "R_PPC64_PLTGOT16", /* name */
1019 FALSE, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1024 /* Like R_PPC64_PLTGOT16, but without overflow. */
1025 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE, /* pc_relative */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc, /* special_function */
1034 "R_PPC64_PLTGOT16_LO", /* name */
1035 FALSE, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1041 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1042 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1043 16, /* rightshift */
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE, /* pc_relative */
1048 complain_overflow_dont, /* complain_on_overflow */
1049 ppc64_elf_unhandled_reloc, /* special_function */
1050 "R_PPC64_PLTGOT16_HI", /* name */
1051 FALSE, /* partial_inplace */
1053 0xffff, /* dst_mask */
1054 FALSE), /* pcrel_offset */
1056 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1057 1 if the contents of the low 16 bits, treated as a signed number,
1059 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1060 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1061 16, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE, /* pc_relative */
1066 complain_overflow_dont,/* complain_on_overflow */
1067 ppc64_elf_unhandled_reloc, /* special_function */
1068 "R_PPC64_PLTGOT16_HA", /* name */
1069 FALSE, /* partial_inplace */
1071 0xffff, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1074 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1075 HOWTO (R_PPC64_ADDR16_DS, /* type */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1079 FALSE, /* pc_relative */
1081 complain_overflow_bitfield, /* complain_on_overflow */
1082 bfd_elf_generic_reloc, /* special_function */
1083 "R_PPC64_ADDR16_DS", /* name */
1084 FALSE, /* partial_inplace */
1086 0xfffc, /* dst_mask */
1087 FALSE), /* pcrel_offset */
1089 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1090 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE, /* pc_relative */
1096 complain_overflow_dont,/* complain_on_overflow */
1097 bfd_elf_generic_reloc, /* special_function */
1098 "R_PPC64_ADDR16_LO_DS",/* name */
1099 FALSE, /* partial_inplace */
1101 0xfffc, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1104 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_GOT16_DS, /* type */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1109 FALSE, /* pc_relative */
1111 complain_overflow_signed, /* complain_on_overflow */
1112 ppc64_elf_unhandled_reloc, /* special_function */
1113 "R_PPC64_GOT16_DS", /* name */
1114 FALSE, /* partial_inplace */
1116 0xfffc, /* dst_mask */
1117 FALSE), /* pcrel_offset */
1119 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 FALSE, /* pc_relative */
1126 complain_overflow_dont, /* complain_on_overflow */
1127 ppc64_elf_unhandled_reloc, /* special_function */
1128 "R_PPC64_GOT16_LO_DS", /* name */
1129 FALSE, /* partial_inplace */
1131 0xfffc, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1134 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 FALSE, /* pc_relative */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 ppc64_elf_unhandled_reloc, /* special_function */
1143 "R_PPC64_PLT16_LO_DS", /* name */
1144 FALSE, /* partial_inplace */
1146 0xfffc, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1149 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1150 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 FALSE, /* pc_relative */
1156 complain_overflow_bitfield, /* complain_on_overflow */
1157 ppc64_elf_sectoff_reloc, /* special_function */
1158 "R_PPC64_SECTOFF_DS", /* name */
1159 FALSE, /* partial_inplace */
1161 0xfffc, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1164 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1165 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE, /* pc_relative */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 ppc64_elf_sectoff_reloc, /* special_function */
1173 "R_PPC64_SECTOFF_LO_DS",/* name */
1174 FALSE, /* partial_inplace */
1176 0xfffc, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1179 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1180 HOWTO (R_PPC64_TOC16_DS, /* type */
1182 1, /* size (0 = byte, 1 = short, 2 = long) */
1184 FALSE, /* pc_relative */
1186 complain_overflow_signed, /* complain_on_overflow */
1187 ppc64_elf_toc_reloc, /* special_function */
1188 "R_PPC64_TOC16_DS", /* name */
1189 FALSE, /* partial_inplace */
1191 0xfffc, /* dst_mask */
1192 FALSE), /* pcrel_offset */
1194 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1195 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE, /* pc_relative */
1201 complain_overflow_dont, /* complain_on_overflow */
1202 ppc64_elf_toc_reloc, /* special_function */
1203 "R_PPC64_TOC16_LO_DS", /* name */
1204 FALSE, /* partial_inplace */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1209 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 FALSE, /* pc_relative */
1217 complain_overflow_signed, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc, /* special_function */
1219 "R_PPC64_PLTGOT16_DS", /* name */
1220 FALSE, /* partial_inplace */
1222 0xfffc, /* dst_mask */
1223 FALSE), /* pcrel_offset */
1225 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1226 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1227 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE, /* pc_relative */
1233 complain_overflow_dont, /* complain_on_overflow */
1234 ppc64_elf_unhandled_reloc, /* special_function */
1235 "R_PPC64_PLTGOT16_LO_DS",/* name */
1236 FALSE, /* partial_inplace */
1238 0xfffc, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1241 /* Marker relocs for TLS. */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE, /* pc_relative */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 bfd_elf_generic_reloc, /* special_function */
1250 "R_PPC64_TLS", /* name */
1251 FALSE, /* partial_inplace */
1254 FALSE), /* pcrel_offset */
1256 HOWTO (R_PPC64_TLSGD,
1258 2, /* size (0 = byte, 1 = short, 2 = long) */
1260 FALSE, /* pc_relative */
1262 complain_overflow_dont, /* complain_on_overflow */
1263 bfd_elf_generic_reloc, /* special_function */
1264 "R_PPC64_TLSGD", /* name */
1265 FALSE, /* partial_inplace */
1268 FALSE), /* pcrel_offset */
1270 HOWTO (R_PPC64_TLSLD,
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE, /* pc_relative */
1276 complain_overflow_dont, /* complain_on_overflow */
1277 bfd_elf_generic_reloc, /* special_function */
1278 "R_PPC64_TLSLD", /* name */
1279 FALSE, /* partial_inplace */
1282 FALSE), /* pcrel_offset */
1284 /* Computes the load module index of the load module that contains the
1285 definition of its TLS sym. */
1286 HOWTO (R_PPC64_DTPMOD64,
1288 4, /* size (0 = byte, 1 = short, 2 = long) */
1290 FALSE, /* pc_relative */
1292 complain_overflow_dont, /* complain_on_overflow */
1293 ppc64_elf_unhandled_reloc, /* special_function */
1294 "R_PPC64_DTPMOD64", /* name */
1295 FALSE, /* partial_inplace */
1297 ONES (64), /* dst_mask */
1298 FALSE), /* pcrel_offset */
1300 /* Computes a dtv-relative displacement, the difference between the value
1301 of sym+add and the base address of the thread-local storage block that
1302 contains the definition of sym, minus 0x8000. */
1303 HOWTO (R_PPC64_DTPREL64,
1305 4, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE, /* pc_relative */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc, /* special_function */
1311 "R_PPC64_DTPREL64", /* name */
1312 FALSE, /* partial_inplace */
1314 ONES (64), /* dst_mask */
1315 FALSE), /* pcrel_offset */
1317 /* A 16 bit dtprel reloc. */
1318 HOWTO (R_PPC64_DTPREL16,
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE, /* pc_relative */
1324 complain_overflow_signed, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc, /* special_function */
1326 "R_PPC64_DTPREL16", /* name */
1327 FALSE, /* partial_inplace */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1332 /* Like DTPREL16, but no overflow. */
1333 HOWTO (R_PPC64_DTPREL16_LO,
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 FALSE, /* pc_relative */
1339 complain_overflow_dont, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc, /* special_function */
1341 "R_PPC64_DTPREL16_LO", /* name */
1342 FALSE, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1347 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HI,
1349 16, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE, /* pc_relative */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPREL16_HI", /* name */
1357 FALSE, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1362 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HA,
1364 16, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE, /* pc_relative */
1369 complain_overflow_dont, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc, /* special_function */
1371 "R_PPC64_DTPREL16_HA", /* name */
1372 FALSE, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1377 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHER,
1379 32, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 FALSE, /* pc_relative */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHER", /* name */
1387 FALSE, /* partial_inplace */
1389 0xffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1392 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1393 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1394 32, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE, /* pc_relative */
1399 complain_overflow_dont, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_HIGHERA", /* name */
1402 FALSE, /* partial_inplace */
1404 0xffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1407 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1408 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1409 48, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 FALSE, /* pc_relative */
1414 complain_overflow_dont, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc, /* special_function */
1416 "R_PPC64_DTPREL16_HIGHEST", /* name */
1417 FALSE, /* partial_inplace */
1419 0xffff, /* dst_mask */
1420 FALSE), /* pcrel_offset */
1422 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1423 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1424 48, /* rightshift */
1425 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 FALSE, /* pc_relative */
1429 complain_overflow_dont, /* complain_on_overflow */
1430 ppc64_elf_unhandled_reloc, /* special_function */
1431 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1432 FALSE, /* partial_inplace */
1434 0xffff, /* dst_mask */
1435 FALSE), /* pcrel_offset */
1437 /* Like DTPREL16, but for insns with a DS field. */
1438 HOWTO (R_PPC64_DTPREL16_DS,
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 FALSE, /* pc_relative */
1444 complain_overflow_signed, /* complain_on_overflow */
1445 ppc64_elf_unhandled_reloc, /* special_function */
1446 "R_PPC64_DTPREL16_DS", /* name */
1447 FALSE, /* partial_inplace */
1449 0xfffc, /* dst_mask */
1450 FALSE), /* pcrel_offset */
1452 /* Like DTPREL16_DS, but no overflow. */
1453 HOWTO (R_PPC64_DTPREL16_LO_DS,
1455 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 FALSE, /* pc_relative */
1459 complain_overflow_dont, /* complain_on_overflow */
1460 ppc64_elf_unhandled_reloc, /* special_function */
1461 "R_PPC64_DTPREL16_LO_DS", /* name */
1462 FALSE, /* partial_inplace */
1464 0xfffc, /* dst_mask */
1465 FALSE), /* pcrel_offset */
1467 /* Computes a tp-relative displacement, the difference between the value of
1468 sym+add and the value of the thread pointer (r13). */
1469 HOWTO (R_PPC64_TPREL64,
1471 4, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE, /* pc_relative */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_TPREL64", /* name */
1478 FALSE, /* partial_inplace */
1480 ONES (64), /* dst_mask */
1481 FALSE), /* pcrel_offset */
1483 /* A 16 bit tprel reloc. */
1484 HOWTO (R_PPC64_TPREL16,
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE, /* pc_relative */
1490 complain_overflow_signed, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_TPREL16", /* name */
1493 FALSE, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1498 /* Like TPREL16, but no overflow. */
1499 HOWTO (R_PPC64_TPREL16_LO,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE, /* pc_relative */
1505 complain_overflow_dont, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_TPREL16_LO", /* name */
1508 FALSE, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1513 /* Like TPREL16_LO, but next higher group of 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HI,
1515 16, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE, /* pc_relative */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_TPREL16_HI", /* name */
1523 FALSE, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1528 /* Like TPREL16_HI, but adjust for low 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HA,
1530 16, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 FALSE, /* pc_relative */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc, /* special_function */
1537 "R_PPC64_TPREL16_HA", /* name */
1538 FALSE, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1543 /* Like TPREL16_HI, but next higher group of 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHER,
1545 32, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 FALSE, /* pc_relative */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_HIGHER", /* name */
1553 FALSE, /* partial_inplace */
1555 0xffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1558 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1559 HOWTO (R_PPC64_TPREL16_HIGHERA,
1560 32, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE, /* pc_relative */
1565 complain_overflow_dont, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_HIGHERA", /* name */
1568 FALSE, /* partial_inplace */
1570 0xffff, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1573 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1574 HOWTO (R_PPC64_TPREL16_HIGHEST,
1575 48, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE, /* pc_relative */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc, /* special_function */
1582 "R_PPC64_TPREL16_HIGHEST", /* name */
1583 FALSE, /* partial_inplace */
1585 0xffff, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1588 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1589 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1590 48, /* rightshift */
1591 1, /* size (0 = byte, 1 = short, 2 = long) */
1593 FALSE, /* pc_relative */
1595 complain_overflow_dont, /* complain_on_overflow */
1596 ppc64_elf_unhandled_reloc, /* special_function */
1597 "R_PPC64_TPREL16_HIGHESTA", /* name */
1598 FALSE, /* partial_inplace */
1600 0xffff, /* dst_mask */
1601 FALSE), /* pcrel_offset */
1603 /* Like TPREL16, but for insns with a DS field. */
1604 HOWTO (R_PPC64_TPREL16_DS,
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 FALSE, /* pc_relative */
1610 complain_overflow_signed, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc, /* special_function */
1612 "R_PPC64_TPREL16_DS", /* name */
1613 FALSE, /* partial_inplace */
1615 0xfffc, /* dst_mask */
1616 FALSE), /* pcrel_offset */
1618 /* Like TPREL16_DS, but no overflow. */
1619 HOWTO (R_PPC64_TPREL16_LO_DS,
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 FALSE, /* pc_relative */
1625 complain_overflow_dont, /* complain_on_overflow */
1626 ppc64_elf_unhandled_reloc, /* special_function */
1627 "R_PPC64_TPREL16_LO_DS", /* name */
1628 FALSE, /* partial_inplace */
1630 0xfffc, /* dst_mask */
1631 FALSE), /* pcrel_offset */
1633 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1634 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1635 to the first entry relative to the TOC base (r2). */
1636 HOWTO (R_PPC64_GOT_TLSGD16,
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE, /* pc_relative */
1642 complain_overflow_signed, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc, /* special_function */
1644 "R_PPC64_GOT_TLSGD16", /* name */
1645 FALSE, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE), /* pcrel_offset */
1650 /* Like GOT_TLSGD16, but no overflow. */
1651 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE, /* pc_relative */
1657 complain_overflow_dont, /* complain_on_overflow */
1658 ppc64_elf_unhandled_reloc, /* special_function */
1659 "R_PPC64_GOT_TLSGD16_LO", /* name */
1660 FALSE, /* partial_inplace */
1662 0xffff, /* dst_mask */
1663 FALSE), /* pcrel_offset */
1665 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1666 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1667 16, /* rightshift */
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 FALSE, /* pc_relative */
1672 complain_overflow_dont, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc, /* special_function */
1674 "R_PPC64_GOT_TLSGD16_HI", /* name */
1675 FALSE, /* partial_inplace */
1677 0xffff, /* dst_mask */
1678 FALSE), /* pcrel_offset */
1680 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1681 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1682 16, /* rightshift */
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 FALSE, /* pc_relative */
1687 complain_overflow_dont, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc, /* special_function */
1689 "R_PPC64_GOT_TLSGD16_HA", /* name */
1690 FALSE, /* partial_inplace */
1692 0xffff, /* dst_mask */
1693 FALSE), /* pcrel_offset */
1695 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1696 with values (sym+add)@dtpmod and zero, and computes the offset to the
1697 first entry relative to the TOC base (r2). */
1698 HOWTO (R_PPC64_GOT_TLSLD16,
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE, /* pc_relative */
1704 complain_overflow_signed, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc, /* special_function */
1706 "R_PPC64_GOT_TLSLD16", /* name */
1707 FALSE, /* partial_inplace */
1709 0xffff, /* dst_mask */
1710 FALSE), /* pcrel_offset */
1712 /* Like GOT_TLSLD16, but no overflow. */
1713 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1715 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 FALSE, /* pc_relative */
1719 complain_overflow_dont, /* complain_on_overflow */
1720 ppc64_elf_unhandled_reloc, /* special_function */
1721 "R_PPC64_GOT_TLSLD16_LO", /* name */
1722 FALSE, /* partial_inplace */
1724 0xffff, /* dst_mask */
1725 FALSE), /* pcrel_offset */
1727 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1728 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1729 16, /* rightshift */
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 FALSE, /* pc_relative */
1734 complain_overflow_dont, /* complain_on_overflow */
1735 ppc64_elf_unhandled_reloc, /* special_function */
1736 "R_PPC64_GOT_TLSLD16_HI", /* name */
1737 FALSE, /* partial_inplace */
1739 0xffff, /* dst_mask */
1740 FALSE), /* pcrel_offset */
1742 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1743 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1744 16, /* rightshift */
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 FALSE, /* pc_relative */
1749 complain_overflow_dont, /* complain_on_overflow */
1750 ppc64_elf_unhandled_reloc, /* special_function */
1751 "R_PPC64_GOT_TLSLD16_HA", /* name */
1752 FALSE, /* partial_inplace */
1754 0xffff, /* dst_mask */
1755 FALSE), /* pcrel_offset */
1757 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1758 the offset to the entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE, /* pc_relative */
1765 complain_overflow_signed, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_DS", /* name */
1768 FALSE, /* partial_inplace */
1770 0xfffc, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1773 /* Like GOT_DTPREL16_DS, but no overflow. */
1774 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE, /* pc_relative */
1780 complain_overflow_dont, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc, /* special_function */
1782 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1783 FALSE, /* partial_inplace */
1785 0xfffc, /* dst_mask */
1786 FALSE), /* pcrel_offset */
1788 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1790 16, /* rightshift */
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 FALSE, /* pc_relative */
1795 complain_overflow_dont, /* complain_on_overflow */
1796 ppc64_elf_unhandled_reloc, /* special_function */
1797 "R_PPC64_GOT_DTPREL16_HI", /* name */
1798 FALSE, /* partial_inplace */
1800 0xffff, /* dst_mask */
1801 FALSE), /* pcrel_offset */
1803 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE, /* pc_relative */
1810 complain_overflow_dont, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc, /* special_function */
1812 "R_PPC64_GOT_DTPREL16_HA", /* name */
1813 FALSE, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE), /* pcrel_offset */
1818 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1819 offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_TPREL16_DS,
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE, /* pc_relative */
1826 complain_overflow_signed, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc, /* special_function */
1828 "R_PPC64_GOT_TPREL16_DS", /* name */
1829 FALSE, /* partial_inplace */
1831 0xfffc, /* dst_mask */
1832 FALSE), /* pcrel_offset */
1834 /* Like GOT_TPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE, /* pc_relative */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc, /* special_function */
1843 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1844 FALSE, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE), /* pcrel_offset */
1849 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_TPREL16_HI,
1851 16, /* rightshift */
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE, /* pc_relative */
1856 complain_overflow_dont, /* complain_on_overflow */
1857 ppc64_elf_unhandled_reloc, /* special_function */
1858 "R_PPC64_GOT_TPREL16_HI", /* name */
1859 FALSE, /* partial_inplace */
1861 0xffff, /* dst_mask */
1862 FALSE), /* pcrel_offset */
1864 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_TPREL16_HA,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1869 FALSE, /* pc_relative */
1871 complain_overflow_dont, /* complain_on_overflow */
1872 ppc64_elf_unhandled_reloc, /* special_function */
1873 "R_PPC64_GOT_TPREL16_HA", /* name */
1874 FALSE, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE), /* pcrel_offset */
1879 HOWTO (R_PPC64_JMP_IREL, /* type */
1881 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1883 FALSE, /* pc_relative */
1885 complain_overflow_dont, /* complain_on_overflow */
1886 ppc64_elf_unhandled_reloc, /* special_function */
1887 "R_PPC64_JMP_IREL", /* name */
1888 FALSE, /* partial_inplace */
1891 FALSE), /* pcrel_offset */
1893 HOWTO (R_PPC64_IRELATIVE, /* type */
1895 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1897 FALSE, /* pc_relative */
1899 complain_overflow_dont, /* complain_on_overflow */
1900 bfd_elf_generic_reloc, /* special_function */
1901 "R_PPC64_IRELATIVE", /* name */
1902 FALSE, /* partial_inplace */
1904 ONES (64), /* dst_mask */
1905 FALSE), /* pcrel_offset */
1907 /* A 16 bit relative relocation. */
1908 HOWTO (R_PPC64_REL16, /* type */
1910 1, /* size (0 = byte, 1 = short, 2 = long) */
1912 TRUE, /* pc_relative */
1914 complain_overflow_bitfield, /* complain_on_overflow */
1915 bfd_elf_generic_reloc, /* special_function */
1916 "R_PPC64_REL16", /* name */
1917 FALSE, /* partial_inplace */
1919 0xffff, /* dst_mask */
1920 TRUE), /* pcrel_offset */
1922 /* A 16 bit relative relocation without overflow. */
1923 HOWTO (R_PPC64_REL16_LO, /* type */
1925 1, /* size (0 = byte, 1 = short, 2 = long) */
1927 TRUE, /* pc_relative */
1929 complain_overflow_dont,/* complain_on_overflow */
1930 bfd_elf_generic_reloc, /* special_function */
1931 "R_PPC64_REL16_LO", /* name */
1932 FALSE, /* partial_inplace */
1934 0xffff, /* dst_mask */
1935 TRUE), /* pcrel_offset */
1937 /* The high order 16 bits of a relative address. */
1938 HOWTO (R_PPC64_REL16_HI, /* type */
1939 16, /* rightshift */
1940 1, /* size (0 = byte, 1 = short, 2 = long) */
1942 TRUE, /* pc_relative */
1944 complain_overflow_dont, /* complain_on_overflow */
1945 bfd_elf_generic_reloc, /* special_function */
1946 "R_PPC64_REL16_HI", /* name */
1947 FALSE, /* partial_inplace */
1949 0xffff, /* dst_mask */
1950 TRUE), /* pcrel_offset */
1952 /* The high order 16 bits of a relative address, plus 1 if the contents of
1953 the low 16 bits, treated as a signed number, is negative. */
1954 HOWTO (R_PPC64_REL16_HA, /* type */
1955 16, /* rightshift */
1956 1, /* size (0 = byte, 1 = short, 2 = long) */
1958 TRUE, /* pc_relative */
1960 complain_overflow_dont, /* complain_on_overflow */
1961 ppc64_elf_ha_reloc, /* special_function */
1962 "R_PPC64_REL16_HA", /* name */
1963 FALSE, /* partial_inplace */
1965 0xffff, /* dst_mask */
1966 TRUE), /* pcrel_offset */
1968 /* GNU extension to record C++ vtable hierarchy. */
1969 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1971 0, /* size (0 = byte, 1 = short, 2 = long) */
1973 FALSE, /* pc_relative */
1975 complain_overflow_dont, /* complain_on_overflow */
1976 NULL, /* special_function */
1977 "R_PPC64_GNU_VTINHERIT", /* name */
1978 FALSE, /* partial_inplace */
1981 FALSE), /* pcrel_offset */
1983 /* GNU extension to record C++ vtable member usage. */
1984 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1986 0, /* size (0 = byte, 1 = short, 2 = long) */
1988 FALSE, /* pc_relative */
1990 complain_overflow_dont, /* complain_on_overflow */
1991 NULL, /* special_function */
1992 "R_PPC64_GNU_VTENTRY", /* name */
1993 FALSE, /* partial_inplace */
1996 FALSE), /* pcrel_offset */
2000 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2004 ppc_howto_init (void)
2006 unsigned int i, type;
2009 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2012 type = ppc64_elf_howto_raw[i].type;
2013 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2014 / sizeof (ppc64_elf_howto_table[0])));
2015 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2019 static reloc_howto_type *
2020 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2021 bfd_reloc_code_real_type code)
2023 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2025 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2026 /* Initialize howto table if needed. */
2034 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2036 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2038 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2040 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2042 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2044 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2046 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2048 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2050 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2052 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2054 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2056 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2058 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2060 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2062 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2064 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2066 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2068 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2070 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2072 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2074 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2076 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2078 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2080 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2082 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2084 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2086 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2088 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2090 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2092 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2094 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2096 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2098 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2100 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2102 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2104 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2106 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2108 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2110 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2112 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2114 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2116 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2118 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2120 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2122 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2124 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2126 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2128 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2130 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2132 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2134 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2136 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2138 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2140 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2142 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2144 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2146 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2148 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2150 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2152 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2154 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2156 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2158 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2160 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2162 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2164 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2166 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2168 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2170 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2172 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2174 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2176 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2178 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2180 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2186 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2188 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2194 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2196 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2198 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2202 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2204 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2210 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2212 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2214 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2222 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2224 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2226 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2234 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2236 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2238 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2240 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2242 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2244 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2246 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2250 return ppc64_elf_howto_table[r];
2253 static reloc_howto_type *
2254 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2260 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2262 if (ppc64_elf_howto_raw[i].name != NULL
2263 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2264 return &ppc64_elf_howto_raw[i];
2269 /* Set the howto pointer for a PowerPC ELF reloc. */
2272 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2273 Elf_Internal_Rela *dst)
2277 /* Initialize howto table if needed. */
2278 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2281 type = ELF64_R_TYPE (dst->r_info);
2282 if (type >= (sizeof (ppc64_elf_howto_table)
2283 / sizeof (ppc64_elf_howto_table[0])))
2285 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2287 type = R_PPC64_NONE;
2289 cache_ptr->howto = ppc64_elf_howto_table[type];
2292 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2294 static bfd_reloc_status_type
2295 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2296 void *data, asection *input_section,
2297 bfd *output_bfd, char **error_message)
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2302 if (output_bfd != NULL)
2303 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2304 input_section, output_bfd, error_message);
2306 /* Adjust the addend for sign extension of the low 16 bits.
2307 We won't actually be using the low 16 bits, so trashing them
2309 reloc_entry->addend += 0x8000;
2310 return bfd_reloc_continue;
2313 static bfd_reloc_status_type
2314 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2315 void *data, asection *input_section,
2316 bfd *output_bfd, char **error_message)
2318 if (output_bfd != NULL)
2319 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2320 input_section, output_bfd, error_message);
2322 if (strcmp (symbol->section->name, ".opd") == 0
2323 && (symbol->section->owner->flags & DYNAMIC) == 0)
2325 bfd_vma dest = opd_entry_value (symbol->section,
2326 symbol->value + reloc_entry->addend,
2328 if (dest != (bfd_vma) -1)
2329 reloc_entry->addend = dest - (symbol->value
2330 + symbol->section->output_section->vma
2331 + symbol->section->output_offset);
2333 return bfd_reloc_continue;
2336 static bfd_reloc_status_type
2337 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2342 enum elf_ppc64_reloc_type r_type;
2343 bfd_size_type octets;
2344 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2345 bfd_boolean is_power4 = FALSE;
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2350 if (output_bfd != NULL)
2351 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2352 input_section, output_bfd, error_message);
2354 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2355 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2356 insn &= ~(0x01 << 21);
2357 r_type = reloc_entry->howto->type;
2358 if (r_type == R_PPC64_ADDR14_BRTAKEN
2359 || r_type == R_PPC64_REL14_BRTAKEN)
2360 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2364 /* Set 'a' bit. This is 0b00010 in BO field for branch
2365 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2366 for branch on CTR insns (BO == 1a00t or 1a01t). */
2367 if ((insn & (0x14 << 21)) == (0x04 << 21))
2369 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2379 if (!bfd_is_com_section (symbol->section))
2380 target = symbol->value;
2381 target += symbol->section->output_section->vma;
2382 target += symbol->section->output_offset;
2383 target += reloc_entry->addend;
2385 from = (reloc_entry->address
2386 + input_section->output_offset
2387 + input_section->output_section->vma);
2389 /* Invert 'y' bit if not the default. */
2390 if ((bfd_signed_vma) (target - from) < 0)
2393 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2395 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2396 input_section, output_bfd, error_message);
2399 static bfd_reloc_status_type
2400 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2401 void *data, asection *input_section,
2402 bfd *output_bfd, char **error_message)
2404 /* If this is a relocatable link (output_bfd test tells us), just
2405 call the generic function. Any adjustment will be done at final
2407 if (output_bfd != NULL)
2408 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2409 input_section, output_bfd, error_message);
2411 /* Subtract the symbol section base address. */
2412 reloc_entry->addend -= symbol->section->output_section->vma;
2413 return bfd_reloc_continue;
2416 static bfd_reloc_status_type
2417 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2418 void *data, asection *input_section,
2419 bfd *output_bfd, char **error_message)
2421 /* If this is a relocatable link (output_bfd test tells us), just
2422 call the generic function. Any adjustment will be done at final
2424 if (output_bfd != NULL)
2425 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2426 input_section, output_bfd, error_message);
2428 /* Subtract the symbol section base address. */
2429 reloc_entry->addend -= symbol->section->output_section->vma;
2431 /* Adjust the addend for sign extension of the low 16 bits. */
2432 reloc_entry->addend += 0x8000;
2433 return bfd_reloc_continue;
2436 static bfd_reloc_status_type
2437 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2438 void *data, asection *input_section,
2439 bfd *output_bfd, char **error_message)
2443 /* If this is a relocatable link (output_bfd test tells us), just
2444 call the generic function. Any adjustment will be done at final
2446 if (output_bfd != NULL)
2447 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2448 input_section, output_bfd, error_message);
2450 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2452 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2454 /* Subtract the TOC base address. */
2455 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2456 return bfd_reloc_continue;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd != NULL)
2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2471 input_section, output_bfd, error_message);
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2475 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2480 /* Adjust the addend for sign extension of the low 16 bits. */
2481 reloc_entry->addend += 0x8000;
2482 return bfd_reloc_continue;
2485 static bfd_reloc_status_type
2486 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2487 void *data, asection *input_section,
2488 bfd *output_bfd, char **error_message)
2491 bfd_size_type octets;
2493 /* If this is a relocatable link (output_bfd test tells us), just
2494 call the generic function. Any adjustment will be done at final
2496 if (output_bfd != NULL)
2497 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2498 input_section, output_bfd, error_message);
2500 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2502 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2504 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2505 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2506 return bfd_reloc_ok;
2509 static bfd_reloc_status_type
2510 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2511 void *data, asection *input_section,
2512 bfd *output_bfd, char **error_message)
2514 /* If this is a relocatable link (output_bfd test tells us), just
2515 call the generic function. Any adjustment will be done at final
2517 if (output_bfd != NULL)
2518 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2519 input_section, output_bfd, error_message);
2521 if (error_message != NULL)
2523 static char buf[60];
2524 sprintf (buf, "generic linker can't handle %s",
2525 reloc_entry->howto->name);
2526 *error_message = buf;
2528 return bfd_reloc_dangerous;
2531 /* Track GOT entries needed for a given symbol. We might need more
2532 than one got entry per symbol. */
2535 struct got_entry *next;
2537 /* The symbol addend that we'll be placing in the GOT. */
2540 /* Unlike other ELF targets, we use separate GOT entries for the same
2541 symbol referenced from different input files. This is to support
2542 automatic multiple TOC/GOT sections, where the TOC base can vary
2543 from one input file to another. After partitioning into TOC groups
2544 we merge entries within the group.
2546 Point to the BFD owning this GOT entry. */
2549 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2550 TLS_TPREL or TLS_DTPREL for tls entries. */
2551 unsigned char tls_type;
2553 /* Non-zero if got.ent points to real entry. */
2554 unsigned char is_indirect;
2556 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2559 bfd_signed_vma refcount;
2561 struct got_entry *ent;
2565 /* The same for PLT. */
2568 struct plt_entry *next;
2574 bfd_signed_vma refcount;
2579 struct ppc64_elf_obj_tdata
2581 struct elf_obj_tdata elf;
2583 /* Shortcuts to dynamic linker sections. */
2587 /* Used during garbage collection. We attach global symbols defined
2588 on removed .opd entries to this section so that the sym is removed. */
2589 asection *deleted_section;
2591 /* TLS local dynamic got entry handling. Support for multiple GOT
2592 sections means we potentially need one of these for each input bfd. */
2593 struct got_entry tlsld_got;
2595 /* A copy of relocs before they are modified for --emit-relocs. */
2596 Elf_Internal_Rela *opd_relocs;
2598 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2599 the reloc to be in the range -32768 to 32767. */
2600 unsigned int has_small_toc_reloc;
2603 #define ppc64_elf_tdata(bfd) \
2604 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2606 #define ppc64_tlsld_got(bfd) \
2607 (&ppc64_elf_tdata (bfd)->tlsld_got)
2609 #define is_ppc64_elf(bfd) \
2610 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2611 && elf_object_id (bfd) == PPC64_ELF_DATA)
2613 /* Override the generic function because we store some extras. */
2616 ppc64_elf_mkobject (bfd *abfd)
2618 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2622 /* Fix bad default arch selected for a 64 bit input bfd when the
2623 default is 32 bit. */
2626 ppc64_elf_object_p (bfd *abfd)
2628 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2630 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2632 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2634 /* Relies on arch after 32 bit default being 64 bit default. */
2635 abfd->arch_info = abfd->arch_info->next;
2636 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2642 /* Support for core dump NOTE sections. */
2645 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2647 size_t offset, size;
2649 if (note->descsz != 504)
2653 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2656 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
2662 /* Make a ".reg/999" section. */
2663 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2664 size, note->descpos + offset);
2668 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2670 if (note->descsz != 136)
2673 elf_tdata (abfd)->core_program
2674 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2675 elf_tdata (abfd)->core_command
2676 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2682 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2695 va_start (ap, note_type);
2696 memset (data, 0, 40);
2697 strncpy (data + 40, va_arg (ap, const char *), 16);
2698 strncpy (data + 56, va_arg (ap, const char *), 80);
2700 return elfcore_write_note (abfd, buf, bufsiz,
2701 "CORE", note_type, data, sizeof (data));
2712 va_start (ap, note_type);
2713 memset (data, 0, 112);
2714 pid = va_arg (ap, long);
2715 bfd_put_32 (abfd, pid, data + 32);
2716 cursig = va_arg (ap, int);
2717 bfd_put_16 (abfd, cursig, data + 12);
2718 greg = va_arg (ap, const void *);
2719 memcpy (data + 112, greg, 384);
2720 memset (data + 496, 0, 8);
2722 return elfcore_write_note (abfd, buf, bufsiz,
2723 "CORE", note_type, data, sizeof (data));
2728 /* Merge backend specific data from an object file to the output
2729 object file when linking. */
2732 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2734 /* Check if we have the same endianess. */
2735 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2736 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2737 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2741 if (bfd_big_endian (ibfd))
2742 msg = _("%B: compiled for a big endian system "
2743 "and target is little endian");
2745 msg = _("%B: compiled for a little endian system "
2746 "and target is big endian");
2748 (*_bfd_error_handler) (msg, ibfd);
2750 bfd_set_error (bfd_error_wrong_format);
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2767 { NULL, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type {
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection **func_sec;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2816 if (!sec->used_by_bfd)
2818 struct _ppc64_elf_section_data *sdata;
2819 bfd_size_type amt = sizeof (*sdata);
2821 sdata = bfd_zalloc (abfd, amt);
2824 sec->used_by_bfd = sdata;
2827 return _bfd_elf_new_section_hook (abfd, sec);
2830 static struct _opd_sec_data *
2831 get_opd_info (asection * sec)
2834 && ppc64_elf_section_data (sec) != NULL
2835 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2836 return &ppc64_elf_section_data (sec)->u.opd;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap, const void *bp)
2848 const asymbol *a = * (const asymbol **) ap;
2849 const asymbol *b = * (const asymbol **) bp;
2851 /* Section symbols first. */
2852 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2854 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2857 /* then .opd symbols. */
2858 if (strcmp (a->section->name, ".opd") == 0
2859 && strcmp (b->section->name, ".opd") != 0)
2861 if (strcmp (a->section->name, ".opd") != 0
2862 && strcmp (b->section->name, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 == (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2872 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 != (SEC_CODE | SEC_ALLOC)
2874 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 == (SEC_CODE | SEC_ALLOC))
2878 if (synthetic_relocatable)
2880 if (a->section->id < b->section->id)
2883 if (a->section->id > b->section->id)
2887 if (a->value + a->section->vma < b->value + b->section->vma)
2890 if (a->value + a->section->vma > b->value + b->section->vma)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2898 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2901 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2904 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2907 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2910 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2913 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2916 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2933 mid = (lo + hi) >> 1;
2934 if (syms[mid]->value + syms[mid]->section->vma < value)
2936 else if (syms[mid]->value + syms[mid]->section->vma > value)
2946 mid = (lo + hi) >> 1;
2947 if (syms[mid]->section->id < id)
2949 else if (syms[mid]->section->id > id)
2951 else if (syms[mid]->value < value)
2953 else if (syms[mid]->value > value)
2963 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2965 bfd_vma vma = *(bfd_vma *) ptr;
2966 return ((section->flags & SEC_ALLOC) != 0
2967 && section->vma <= vma
2968 && vma < section->vma + section->size);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2976 long static_count, asymbol **static_syms,
2977 long dyn_count, asymbol **dyn_syms,
2984 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2986 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2991 opd = bfd_get_section_by_name (abfd, ".opd");
2995 symcount = static_count;
2997 symcount += dyn_count;
3001 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3005 if (!relocatable && static_count != 0 && dyn_count != 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms, static_syms, static_count * sizeof (*syms));
3009 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3011 else if (!relocatable && static_count == 0)
3012 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3014 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3016 synthetic_relocatable = relocatable;
3017 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3019 if (!relocatable && symcount > 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i = 1, j = 1; i < symcount; ++i)
3026 if (syms[i - 1]->value + syms[i - 1]->section->vma
3027 != syms[i]->value + syms[i]->section->vma)
3028 syms[j++] = syms[i];
3033 if (strcmp (syms[i]->section->name, ".opd") == 0)
3037 for (; i < symcount; ++i)
3038 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3039 != (SEC_CODE | SEC_ALLOC))
3040 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3044 for (; i < symcount; ++i)
3045 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3049 for (; i < symcount; ++i)
3050 if (strcmp (syms[i]->section->name, ".opd") != 0)
3054 for (; i < symcount; ++i)
3055 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3056 != (SEC_CODE | SEC_ALLOC))
3064 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3069 if (opdsymend == secsymend)
3072 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3073 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3077 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3084 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3088 while (r < opd->relocation + relcount
3089 && r->address < syms[i]->value + opd->vma)
3092 if (r == opd->relocation + relcount)
3095 if (r->address != syms[i]->value + opd->vma)
3098 if (r->howto->type != R_PPC64_ADDR64)
3101 sym = *r->sym_ptr_ptr;
3102 if (!sym_exists_at (syms, opdsymend, symcount,
3103 sym->section->id, sym->value + r->addend))
3106 size += sizeof (asymbol);
3107 size += strlen (syms[i]->name) + 2;
3111 s = *ret = bfd_malloc (size);
3118 names = (char *) (s + count);
3120 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3124 while (r < opd->relocation + relcount
3125 && r->address < syms[i]->value + opd->vma)
3128 if (r == opd->relocation + relcount)
3131 if (r->address != syms[i]->value + opd->vma)
3134 if (r->howto->type != R_PPC64_ADDR64)
3137 sym = *r->sym_ptr_ptr;
3138 if (!sym_exists_at (syms, opdsymend, symcount,
3139 sym->section->id, sym->value + r->addend))
3144 s->flags |= BSF_SYNTHETIC;
3145 s->section = sym->section;
3146 s->value = sym->value + r->addend;
3149 len = strlen (syms[i]->name);
3150 memcpy (names, syms[i]->name, len + 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s->udata.p = syms[i];
3161 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3165 bfd_vma glink_vma = 0, resolv_vma = 0;
3166 asection *dynamic, *glink = NULL, *relplt = NULL;
3169 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3173 free_contents_and_exit:
3181 for (i = secsymend; i < opdsymend; ++i)
3185 /* Ignore bogus symbols. */
3186 if (syms[i]->value > opd->size - 8)
3189 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3190 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3193 size += sizeof (asymbol);
3194 size += strlen (syms[i]->name) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3202 bfd_byte *dynbuf, *extdyn, *extdynend;
3204 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3206 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3207 goto free_contents_and_exit;
3209 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3210 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3213 extdynend = extdyn + dynamic->size;
3214 for (; extdyn < extdynend; extdyn += extdynsize)
3216 Elf_Internal_Dyn dyn;
3217 (*swap_dyn_in) (abfd, extdyn, &dyn);
3219 if (dyn.d_tag == DT_NULL)
3222 if (dyn.d_tag == DT_PPC64_GLINK)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma = dyn.d_un.d_val + 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink = bfd_sections_find_if (abfd, section_covers_vma,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd, glink, buf,
3245 glink_vma + 4 - glink->vma, 4))
3247 unsigned int insn = bfd_get_32 (abfd, buf);
3249 if ((insn & ~0x3fffffc) == 0)
3250 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3254 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3256 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3259 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3260 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3261 goto free_contents_and_exit;
3263 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3264 size += plt_count * sizeof (asymbol);
3266 p = relplt->relocation;
3267 for (i = 0; i < plt_count; i++, p++)
3269 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3271 size += sizeof ("+0x") - 1 + 16;
3276 s = *ret = bfd_malloc (size);
3278 goto free_contents_and_exit;
3280 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3282 for (i = secsymend; i < opdsymend; ++i)
3286 if (syms[i]->value > opd->size - 8)
3289 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3290 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3294 asection *sec = abfd->sections;
3301 long mid = (lo + hi) >> 1;
3302 if (syms[mid]->section->vma < ent)
3304 else if (syms[mid]->section->vma > ent)
3308 sec = syms[mid]->section;
3313 if (lo >= hi && lo > codesecsym)
3314 sec = syms[lo - 1]->section;
3316 for (; sec != NULL; sec = sec->next)
3320 if ((sec->flags & SEC_ALLOC) == 0
3321 || (sec->flags & SEC_LOAD) == 0)
3323 if ((sec->flags & SEC_CODE) != 0)
3326 s->flags |= BSF_SYNTHETIC;
3327 s->value = ent - s->section->vma;
3330 len = strlen (syms[i]->name);
3331 memcpy (names, syms[i]->name, len + 1);
3333 /* Have udata.p point back to the original symbol this
3334 synthetic symbol was derived from. */
3335 s->udata.p = syms[i];
3341 if (glink != NULL && relplt != NULL)
3345 /* Add a symbol for the main glink trampoline. */
3346 memset (s, 0, sizeof *s);
3348 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3350 s->value = resolv_vma - glink->vma;
3352 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3353 names += sizeof ("__glink_PLTresolve");
3358 /* FIXME: It would be very much nicer to put sym@plt on the
3359 stub rather than on the glink branch table entry. The
3360 objdump disassembler would then use a sensible symbol
3361 name on plt calls. The difficulty in doing so is
3362 a) finding the stubs, and,
3363 b) matching stubs against plt entries, and,
3364 c) there can be multiple stubs for a given plt entry.
3366 Solving (a) could be done by code scanning, but older
3367 ppc64 binaries used different stubs to current code.
3368 (b) is the tricky one since you need to known the toc
3369 pointer for at least one function that uses a pic stub to
3370 be able to calculate the plt address referenced.
3371 (c) means gdb would need to set multiple breakpoints (or
3372 find the glink branch itself) when setting breakpoints
3373 for pending shared library loads. */
3374 p = relplt->relocation;
3375 for (i = 0; i < plt_count; i++, p++)
3379 *s = **p->sym_ptr_ptr;
3380 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3381 we are defining a symbol, ensure one of them is set. */
3382 if ((s->flags & BSF_LOCAL) == 0)
3383 s->flags |= BSF_GLOBAL;
3384 s->flags |= BSF_SYNTHETIC;
3386 s->value = glink_vma - glink->vma;
3389 len = strlen ((*p->sym_ptr_ptr)->name);
3390 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3394 memcpy (names, "+0x", sizeof ("+0x") - 1);
3395 names += sizeof ("+0x") - 1;
3396 bfd_sprintf_vma (abfd, names, p->addend);
3397 names += strlen (names);
3399 memcpy (names, "@plt", sizeof ("@plt"));
3400 names += sizeof ("@plt");
3415 /* The following functions are specific to the ELF linker, while
3416 functions above are used generally. Those named ppc64_elf_* are
3417 called by the main ELF linker code. They appear in this file more
3418 or less in the order in which they are called. eg.
3419 ppc64_elf_check_relocs is called early in the link process,
3420 ppc64_elf_finish_dynamic_sections is one of the last functions
3423 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3424 functions have both a function code symbol and a function descriptor
3425 symbol. A call to foo in a relocatable object file looks like:
3432 The function definition in another object file might be:
3436 . .quad .TOC.@tocbase
3442 When the linker resolves the call during a static link, the branch
3443 unsurprisingly just goes to .foo and the .opd information is unused.
3444 If the function definition is in a shared library, things are a little
3445 different: The call goes via a plt call stub, the opd information gets
3446 copied to the plt, and the linker patches the nop.
3454 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3455 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3456 . std 2,40(1) # this is the general idea
3464 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3466 The "reloc ()" notation is supposed to indicate that the linker emits
3467 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3470 What are the difficulties here? Well, firstly, the relocations
3471 examined by the linker in check_relocs are against the function code
3472 sym .foo, while the dynamic relocation in the plt is emitted against
3473 the function descriptor symbol, foo. Somewhere along the line, we need
3474 to carefully copy dynamic link information from one symbol to the other.
3475 Secondly, the generic part of the elf linker will make .foo a dynamic
3476 symbol as is normal for most other backends. We need foo dynamic
3477 instead, at least for an application final link. However, when
3478 creating a shared library containing foo, we need to have both symbols
3479 dynamic so that references to .foo are satisfied during the early
3480 stages of linking. Otherwise the linker might decide to pull in a
3481 definition from some other object, eg. a static library.
3483 Update: As of August 2004, we support a new convention. Function
3484 calls may use the function descriptor symbol, ie. "bl foo". This
3485 behaves exactly as "bl .foo". */
3487 /* The linker needs to keep track of the number of relocs that it
3488 decides to copy as dynamic relocs in check_relocs for each symbol.
3489 This is so that it can later discard them if they are found to be
3490 unnecessary. We store the information in a field extending the
3491 regular ELF linker hash table. */
3493 struct ppc_dyn_relocs
3495 struct ppc_dyn_relocs *next;
3497 /* The input section of the reloc. */
3500 /* Total number of relocs copied for the input section. */
3501 bfd_size_type count;
3503 /* Number of pc-relative relocs copied for the input section. */
3504 bfd_size_type pc_count;
3507 /* Of those relocs that might be copied as dynamic relocs, this function
3508 selects those that must be copied when linking a shared library,
3509 even when the symbol is local. */
3512 must_be_dyn_reloc (struct bfd_link_info *info,
3513 enum elf_ppc64_reloc_type r_type)
3525 case R_PPC64_TPREL16:
3526 case R_PPC64_TPREL16_LO:
3527 case R_PPC64_TPREL16_HI:
3528 case R_PPC64_TPREL16_HA:
3529 case R_PPC64_TPREL16_DS:
3530 case R_PPC64_TPREL16_LO_DS:
3531 case R_PPC64_TPREL16_HIGHER:
3532 case R_PPC64_TPREL16_HIGHERA:
3533 case R_PPC64_TPREL16_HIGHEST:
3534 case R_PPC64_TPREL16_HIGHESTA:
3535 case R_PPC64_TPREL64:
3536 return !info->executable;
3540 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3541 copying dynamic variables from a shared lib into an app's dynbss
3542 section, and instead use a dynamic relocation to point into the
3543 shared lib. With code that gcc generates, it's vital that this be
3544 enabled; In the PowerPC64 ABI, the address of a function is actually
3545 the address of a function descriptor, which resides in the .opd
3546 section. gcc uses the descriptor directly rather than going via the
3547 GOT as some other ABI's do, which means that initialized function
3548 pointers must reference the descriptor. Thus, a function pointer
3549 initialized to the address of a function in a shared library will
3550 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3551 redefines the function descriptor symbol to point to the copy. This
3552 presents a problem as a plt entry for that function is also
3553 initialized from the function descriptor symbol and the copy reloc
3554 may not be initialized first. */
3555 #define ELIMINATE_COPY_RELOCS 1
3557 /* Section name for stubs is the associated section name plus this
3559 #define STUB_SUFFIX ".stub"
3562 ppc_stub_long_branch:
3563 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3564 destination, but a 24 bit branch in a stub section will reach.
3567 ppc_stub_plt_branch:
3568 Similar to the above, but a 24 bit branch in the stub section won't
3569 reach its destination.
3570 . addis %r12,%r2,xxx@toc@ha
3571 . ld %r11,xxx@toc@l(%r12)
3576 Used to call a function in a shared library. If it so happens that
3577 the plt entry referenced crosses a 64k boundary, then an extra
3578 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3579 . addis %r12,%r2,xxx@toc@ha
3581 . ld %r11,xxx+0@toc@l(%r12)
3583 . ld %r2,xxx+8@toc@l(%r12)
3584 . ld %r11,xxx+16@toc@l(%r12)
3587 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3588 code to adjust the value and save r2 to support multiple toc sections.
3589 A ppc_stub_long_branch with an r2 offset looks like:
3591 . addis %r2,%r2,off@ha
3592 . addi %r2,%r2,off@l
3595 A ppc_stub_plt_branch with an r2 offset looks like:
3597 . addis %r12,%r2,xxx@toc@ha
3598 . ld %r11,xxx@toc@l(%r12)
3599 . addis %r2,%r2,off@ha
3600 . addi %r2,%r2,off@l
3604 In cases where the "addis" instruction would add zero, the "addis" is
3605 omitted and following instructions modified slightly in some cases.
3608 enum ppc_stub_type {
3610 ppc_stub_long_branch,
3611 ppc_stub_long_branch_r2off,
3612 ppc_stub_plt_branch,
3613 ppc_stub_plt_branch_r2off,
3617 struct ppc_stub_hash_entry {
3619 /* Base hash table entry structure. */
3620 struct bfd_hash_entry root;
3622 enum ppc_stub_type stub_type;
3624 /* The stub section. */
3627 /* Offset within stub_sec of the beginning of this stub. */
3628 bfd_vma stub_offset;
3630 /* Given the symbol's value and its section we can determine its final
3631 value when building the stubs (so the stub knows where to jump. */
3632 bfd_vma target_value;
3633 asection *target_section;
3635 /* The symbol table entry, if any, that this was derived from. */
3636 struct ppc_link_hash_entry *h;
3637 struct plt_entry *plt_ent;
3639 /* And the reloc addend that this was derived from. */
3642 /* Where this stub is being called from, or, in the case of combined
3643 stub sections, the first input section in the group. */
3647 struct ppc_branch_hash_entry {
3649 /* Base hash table entry structure. */
3650 struct bfd_hash_entry root;
3652 /* Offset within branch lookup table. */
3653 unsigned int offset;
3655 /* Generation marker. */
3659 struct ppc_link_hash_entry
3661 struct elf_link_hash_entry elf;
3664 /* A pointer to the most recently used stub hash entry against this
3666 struct ppc_stub_hash_entry *stub_cache;
3668 /* A pointer to the next symbol starting with a '.' */
3669 struct ppc_link_hash_entry *next_dot_sym;
3672 /* Track dynamic relocs copied for this symbol. */
3673 struct ppc_dyn_relocs *dyn_relocs;
3675 /* Link between function code and descriptor symbols. */
3676 struct ppc_link_hash_entry *oh;
3678 /* Flag function code and descriptor symbols. */
3679 unsigned int is_func:1;
3680 unsigned int is_func_descriptor:1;
3681 unsigned int fake:1;
3683 /* Whether global opd/toc sym has been adjusted or not.
3684 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3685 should be set for all globals defined in any opd/toc section. */
3686 unsigned int adjust_done:1;
3688 /* Set if we twiddled this symbol to weak at some stage. */
3689 unsigned int was_undefined:1;
3691 /* Contexts in which symbol is used in the GOT (or TOC).
3692 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3693 corresponding relocs are encountered during check_relocs.
3694 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3695 indicate the corresponding GOT entry type is not needed.
3696 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3697 a TPREL one. We use a separate flag rather than setting TPREL
3698 just for convenience in distinguishing the two cases. */
3699 #define TLS_GD 1 /* GD reloc. */
3700 #define TLS_LD 2 /* LD reloc. */
3701 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3702 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3703 #define TLS_TLS 16 /* Any TLS reloc. */
3704 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3705 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3706 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3707 unsigned char tls_mask;
3710 /* ppc64 ELF linker hash table. */
3712 struct ppc_link_hash_table
3714 struct elf_link_hash_table elf;
3716 /* The stub hash table. */
3717 struct bfd_hash_table stub_hash_table;
3719 /* Another hash table for plt_branch stubs. */
3720 struct bfd_hash_table branch_hash_table;
3722 /* Linker stub bfd. */
3725 /* Linker call-backs. */
3726 asection * (*add_stub_section) (const char *, asection *);
3727 void (*layout_sections_again) (void);
3729 /* Array to keep track of which stub sections have been created, and
3730 information on stub grouping. */
3732 /* This is the section to which stubs in the group will be attached. */
3734 /* The stub section. */
3736 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3740 /* Temp used when calculating TOC pointers. */
3743 asection *toc_first_sec;
3745 /* Highest input section id. */
3748 /* Highest output section index. */
3751 /* Used when adding symbols. */
3752 struct ppc_link_hash_entry *dot_syms;
3754 /* List of input sections for each output section. */
3755 asection **input_list;
3757 /* Short-cuts to get to dynamic linker sections. */
3770 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3771 struct ppc_link_hash_entry *tls_get_addr;
3772 struct ppc_link_hash_entry *tls_get_addr_fd;
3774 /* The size of reliplt used by got entry relocs. */
3775 bfd_size_type got_reli_size;
3778 unsigned long stub_count[ppc_stub_plt_call];
3780 /* Number of stubs against global syms. */
3781 unsigned long stub_globals;
3783 /* Set if we should emit symbols for stubs. */
3784 unsigned int emit_stub_syms:1;
3786 /* Set if __tls_get_addr optimization should not be done. */
3787 unsigned int no_tls_get_addr_opt:1;
3789 /* Support for multiple toc sections. */
3790 unsigned int do_multi_toc:1;
3791 unsigned int multi_toc_needed:1;
3792 unsigned int second_toc_pass:1;
3793 unsigned int do_toc_opt:1;
3796 unsigned int stub_error:1;
3798 /* Temp used by ppc64_elf_process_dot_syms. */
3799 unsigned int twiddled_syms:1;
3801 /* Incremented every time we size stubs. */
3802 unsigned int stub_iteration;
3804 /* Small local sym cache. */
3805 struct sym_cache sym_cache;
3808 /* Rename some of the generic section flags to better document how they
3811 /* Nonzero if this section has TLS related relocations. */
3812 #define has_tls_reloc sec_flg0
3814 /* Nonzero if this section has a call to __tls_get_addr. */
3815 #define has_tls_get_addr_call sec_flg1
3817 /* Nonzero if this section has any toc or got relocs. */
3818 #define has_toc_reloc sec_flg2
3820 /* Nonzero if this section has a call to another section that uses
3822 #define makes_toc_func_call sec_flg3
3824 /* Recursion protection when determining above flag. */
3825 #define call_check_in_progress sec_flg4
3826 #define call_check_done sec_flg5
3828 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3830 #define ppc_hash_table(p) \
3831 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3832 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3834 #define ppc_stub_hash_lookup(table, string, create, copy) \
3835 ((struct ppc_stub_hash_entry *) \
3836 bfd_hash_lookup ((table), (string), (create), (copy)))
3838 #define ppc_branch_hash_lookup(table, string, create, copy) \
3839 ((struct ppc_branch_hash_entry *) \
3840 bfd_hash_lookup ((table), (string), (create), (copy)))
3842 /* Create an entry in the stub hash table. */
3844 static struct bfd_hash_entry *
3845 stub_hash_newfunc (struct bfd_hash_entry *entry,
3846 struct bfd_hash_table *table,
3849 /* Allocate the structure if it has not already been allocated by a
3853 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3858 /* Call the allocation method of the superclass. */
3859 entry = bfd_hash_newfunc (entry, table, string);
3862 struct ppc_stub_hash_entry *eh;
3864 /* Initialize the local fields. */
3865 eh = (struct ppc_stub_hash_entry *) entry;
3866 eh->stub_type = ppc_stub_none;
3867 eh->stub_sec = NULL;
3868 eh->stub_offset = 0;
3869 eh->target_value = 0;
3870 eh->target_section = NULL;
3878 /* Create an entry in the branch hash table. */
3880 static struct bfd_hash_entry *
3881 branch_hash_newfunc (struct bfd_hash_entry *entry,
3882 struct bfd_hash_table *table,
3885 /* Allocate the structure if it has not already been allocated by a
3889 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3894 /* Call the allocation method of the superclass. */
3895 entry = bfd_hash_newfunc (entry, table, string);
3898 struct ppc_branch_hash_entry *eh;
3900 /* Initialize the local fields. */
3901 eh = (struct ppc_branch_hash_entry *) entry;
3909 /* Create an entry in a ppc64 ELF linker hash table. */
3911 static struct bfd_hash_entry *
3912 link_hash_newfunc (struct bfd_hash_entry *entry,
3913 struct bfd_hash_table *table,
3916 /* Allocate the structure if it has not already been allocated by a
3920 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3925 /* Call the allocation method of the superclass. */
3926 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3929 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3931 memset (&eh->u.stub_cache, 0,
3932 (sizeof (struct ppc_link_hash_entry)
3933 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3935 /* When making function calls, old ABI code references function entry
3936 points (dot symbols), while new ABI code references the function
3937 descriptor symbol. We need to make any combination of reference and
3938 definition work together, without breaking archive linking.
3940 For a defined function "foo" and an undefined call to "bar":
3941 An old object defines "foo" and ".foo", references ".bar" (possibly
3943 A new object defines "foo" and references "bar".
3945 A new object thus has no problem with its undefined symbols being
3946 satisfied by definitions in an old object. On the other hand, the
3947 old object won't have ".bar" satisfied by a new object.
3949 Keep a list of newly added dot-symbols. */
3951 if (string[0] == '.')
3953 struct ppc_link_hash_table *htab;
3955 htab = (struct ppc_link_hash_table *) table;
3956 eh->u.next_dot_sym = htab->dot_syms;
3957 htab->dot_syms = eh;
3964 /* Create a ppc64 ELF linker hash table. */
3966 static struct bfd_link_hash_table *
3967 ppc64_elf_link_hash_table_create (bfd *abfd)
3969 struct ppc_link_hash_table *htab;
3970 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3972 htab = bfd_zmalloc (amt);
3976 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3977 sizeof (struct ppc_link_hash_entry),
3984 /* Init the stub hash table too. */
3985 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3986 sizeof (struct ppc_stub_hash_entry)))
3989 /* And the branch hash table. */
3990 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3991 sizeof (struct ppc_branch_hash_entry)))
3994 /* Initializing two fields of the union is just cosmetic. We really
3995 only care about glist, but when compiled on a 32-bit host the
3996 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3997 debugger inspection of these fields look nicer. */
3998 htab->elf.init_got_refcount.refcount = 0;
3999 htab->elf.init_got_refcount.glist = NULL;
4000 htab->elf.init_plt_refcount.refcount = 0;
4001 htab->elf.init_plt_refcount.glist = NULL;
4002 htab->elf.init_got_offset.offset = 0;
4003 htab->elf.init_got_offset.glist = NULL;
4004 htab->elf.init_plt_offset.offset = 0;
4005 htab->elf.init_plt_offset.glist = NULL;
4007 return &htab->elf.root;
4010 /* Free the derived linker hash table. */
4013 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4015 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
4017 bfd_hash_table_free (&ret->stub_hash_table);
4018 bfd_hash_table_free (&ret->branch_hash_table);
4019 _bfd_generic_link_hash_table_free (hash);
4022 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4025 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4027 struct ppc_link_hash_table *htab;
4029 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4031 /* Always hook our dynamic sections into the first bfd, which is the
4032 linker created stub bfd. This ensures that the GOT header is at
4033 the start of the output TOC section. */
4034 htab = ppc_hash_table (info);
4037 htab->stub_bfd = abfd;
4038 htab->elf.dynobj = abfd;
4041 /* Build a name for an entry in the stub hash table. */
4044 ppc_stub_name (const asection *input_section,
4045 const asection *sym_sec,
4046 const struct ppc_link_hash_entry *h,
4047 const Elf_Internal_Rela *rel)
4052 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4053 offsets from a sym as a branch target? In fact, we could
4054 probably assume the addend is always zero. */
4055 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4059 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4060 stub_name = bfd_malloc (len);
4061 if (stub_name == NULL)
4064 sprintf (stub_name, "%08x.%s+%x",
4065 input_section->id & 0xffffffff,
4066 h->elf.root.root.string,
4067 (int) rel->r_addend & 0xffffffff);
4071 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4072 stub_name = bfd_malloc (len);
4073 if (stub_name == NULL)
4076 sprintf (stub_name, "%08x.%x:%x+%x",
4077 input_section->id & 0xffffffff,
4078 sym_sec->id & 0xffffffff,
4079 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4080 (int) rel->r_addend & 0xffffffff);
4082 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4083 stub_name[len - 2] = 0;
4087 /* Look up an entry in the stub hash. Stub entries are cached because
4088 creating the stub name takes a bit of time. */
4090 static struct ppc_stub_hash_entry *
4091 ppc_get_stub_entry (const asection *input_section,
4092 const asection *sym_sec,
4093 struct ppc_link_hash_entry *h,
4094 const Elf_Internal_Rela *rel,
4095 struct ppc_link_hash_table *htab)
4097 struct ppc_stub_hash_entry *stub_entry;
4098 const asection *id_sec;
4100 /* If this input section is part of a group of sections sharing one
4101 stub section, then use the id of the first section in the group.
4102 Stub names need to include a section id, as there may well be
4103 more than one stub used to reach say, printf, and we need to
4104 distinguish between them. */
4105 id_sec = htab->stub_group[input_section->id].link_sec;
4107 if (h != NULL && h->u.stub_cache != NULL
4108 && h->u.stub_cache->h == h
4109 && h->u.stub_cache->id_sec == id_sec)
4111 stub_entry = h->u.stub_cache;
4117 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4118 if (stub_name == NULL)
4121 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4122 stub_name, FALSE, FALSE);
4124 h->u.stub_cache = stub_entry;
4132 /* Add a new stub entry to the stub hash. Not all fields of the new
4133 stub entry are initialised. */
4135 static struct ppc_stub_hash_entry *
4136 ppc_add_stub (const char *stub_name,
4138 struct ppc_link_hash_table *htab)
4142 struct ppc_stub_hash_entry *stub_entry;
4144 link_sec = htab->stub_group[section->id].link_sec;
4145 stub_sec = htab->stub_group[section->id].stub_sec;
4146 if (stub_sec == NULL)
4148 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4149 if (stub_sec == NULL)
4155 namelen = strlen (link_sec->name);
4156 len = namelen + sizeof (STUB_SUFFIX);
4157 s_name = bfd_alloc (htab->stub_bfd, len);
4161 memcpy (s_name, link_sec->name, namelen);
4162 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4163 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4164 if (stub_sec == NULL)
4166 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4168 htab->stub_group[section->id].stub_sec = stub_sec;
4171 /* Enter this entry into the linker stub hash table. */
4172 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4174 if (stub_entry == NULL)
4176 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
4177 section->owner, stub_name);
4181 stub_entry->stub_sec = stub_sec;
4182 stub_entry->stub_offset = 0;
4183 stub_entry->id_sec = link_sec;
4187 /* Create sections for linker generated code. */
4190 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4192 struct ppc_link_hash_table *htab;
4195 htab = ppc_hash_table (info);
4199 /* Create .sfpr for code to save and restore fp regs. */
4200 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4201 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4202 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4204 if (htab->sfpr == NULL
4205 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4208 /* Create .glink for lazy dynamic linking support. */
4209 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4211 if (htab->glink == NULL
4212 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4215 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4216 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4217 if (htab->iplt == NULL
4218 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4221 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4222 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4223 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4226 if (htab->reliplt == NULL
4227 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4230 /* Create branch lookup table for plt_branch stubs. */
4231 flags = (SEC_ALLOC | SEC_LOAD
4232 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4233 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4235 if (htab->brlt == NULL
4236 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4242 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4243 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4244 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4247 if (htab->relbrlt == NULL
4248 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4254 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4255 not already done. */
4258 create_got_section (bfd *abfd, struct bfd_link_info *info)
4260 asection *got, *relgot;
4262 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4264 if (!is_ppc64_elf (abfd))
4271 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4274 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4279 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4280 | SEC_LINKER_CREATED);
4282 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4284 || !bfd_set_section_alignment (abfd, got, 3))
4287 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4288 flags | SEC_READONLY);
4290 || ! bfd_set_section_alignment (abfd, relgot, 3))
4293 ppc64_elf_tdata (abfd)->got = got;
4294 ppc64_elf_tdata (abfd)->relgot = relgot;
4298 /* Create the dynamic sections, and set up shortcuts. */
4301 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4303 struct ppc_link_hash_table *htab;
4305 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4308 htab = ppc_hash_table (info);
4313 htab->got = bfd_get_section_by_name (dynobj, ".got");
4314 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4315 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4316 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
4318 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
4320 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4321 || (!info->shared && !htab->relbss))
4327 /* Follow indirect and warning symbol links. */
4329 static inline struct bfd_link_hash_entry *
4330 follow_link (struct bfd_link_hash_entry *h)
4332 while (h->type == bfd_link_hash_indirect
4333 || h->type == bfd_link_hash_warning)
4338 static inline struct elf_link_hash_entry *
4339 elf_follow_link (struct elf_link_hash_entry *h)
4341 return (struct elf_link_hash_entry *) follow_link (&h->root);
4344 static inline struct ppc_link_hash_entry *
4345 ppc_follow_link (struct ppc_link_hash_entry *h)
4347 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4350 /* Merge PLT info on FROM with that on TO. */
4353 move_plt_plist (struct ppc_link_hash_entry *from,
4354 struct ppc_link_hash_entry *to)
4356 if (from->elf.plt.plist != NULL)
4358 if (to->elf.plt.plist != NULL)
4360 struct plt_entry **entp;
4361 struct plt_entry *ent;
4363 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4365 struct plt_entry *dent;
4367 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4368 if (dent->addend == ent->addend)
4370 dent->plt.refcount += ent->plt.refcount;
4377 *entp = to->elf.plt.plist;
4380 to->elf.plt.plist = from->elf.plt.plist;
4381 from->elf.plt.plist = NULL;
4385 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4388 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4389 struct elf_link_hash_entry *dir,
4390 struct elf_link_hash_entry *ind)
4392 struct ppc_link_hash_entry *edir, *eind;
4394 edir = (struct ppc_link_hash_entry *) dir;
4395 eind = (struct ppc_link_hash_entry *) ind;
4397 /* Copy over any dynamic relocs we may have on the indirect sym. */
4398 if (eind->dyn_relocs != NULL)
4400 if (edir->dyn_relocs != NULL)
4402 struct ppc_dyn_relocs **pp;
4403 struct ppc_dyn_relocs *p;
4405 /* Add reloc counts against the indirect sym to the direct sym
4406 list. Merge any entries against the same section. */
4407 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4409 struct ppc_dyn_relocs *q;
4411 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4412 if (q->sec == p->sec)
4414 q->pc_count += p->pc_count;
4415 q->count += p->count;
4422 *pp = edir->dyn_relocs;
4425 edir->dyn_relocs = eind->dyn_relocs;
4426 eind->dyn_relocs = NULL;
4429 edir->is_func |= eind->is_func;
4430 edir->is_func_descriptor |= eind->is_func_descriptor;
4431 edir->tls_mask |= eind->tls_mask;
4432 if (eind->oh != NULL)
4433 edir->oh = ppc_follow_link (eind->oh);
4435 /* If called to transfer flags for a weakdef during processing
4436 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4437 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4438 if (!(ELIMINATE_COPY_RELOCS
4439 && eind->elf.root.type != bfd_link_hash_indirect
4440 && edir->elf.dynamic_adjusted))
4441 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4443 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4444 edir->elf.ref_regular |= eind->elf.ref_regular;
4445 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4446 edir->elf.needs_plt |= eind->elf.needs_plt;
4448 /* If we were called to copy over info for a weak sym, that's all. */
4449 if (eind->elf.root.type != bfd_link_hash_indirect)
4452 /* Copy over got entries that we may have already seen to the
4453 symbol which just became indirect. */
4454 if (eind->elf.got.glist != NULL)
4456 if (edir->elf.got.glist != NULL)
4458 struct got_entry **entp;
4459 struct got_entry *ent;
4461 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4463 struct got_entry *dent;
4465 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4466 if (dent->addend == ent->addend
4467 && dent->owner == ent->owner
4468 && dent->tls_type == ent->tls_type)
4470 dent->got.refcount += ent->got.refcount;
4477 *entp = edir->elf.got.glist;
4480 edir->elf.got.glist = eind->elf.got.glist;
4481 eind->elf.got.glist = NULL;
4484 /* And plt entries. */
4485 move_plt_plist (eind, edir);
4487 if (eind->elf.dynindx != -1)
4489 if (edir->elf.dynindx != -1)
4490 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4491 edir->elf.dynstr_index);
4492 edir->elf.dynindx = eind->elf.dynindx;
4493 edir->elf.dynstr_index = eind->elf.dynstr_index;
4494 eind->elf.dynindx = -1;
4495 eind->elf.dynstr_index = 0;
4499 /* Find the function descriptor hash entry from the given function code
4500 hash entry FH. Link the entries via their OH fields. */
4502 static struct ppc_link_hash_entry *
4503 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4505 struct ppc_link_hash_entry *fdh = fh->oh;
4509 const char *fd_name = fh->elf.root.root.string + 1;
4511 fdh = (struct ppc_link_hash_entry *)
4512 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4516 fdh->is_func_descriptor = 1;
4522 return ppc_follow_link (fdh);
4525 /* Make a fake function descriptor sym for the code sym FH. */
4527 static struct ppc_link_hash_entry *
4528 make_fdh (struct bfd_link_info *info,
4529 struct ppc_link_hash_entry *fh)
4533 struct bfd_link_hash_entry *bh;
4534 struct ppc_link_hash_entry *fdh;
4536 abfd = fh->elf.root.u.undef.abfd;
4537 newsym = bfd_make_empty_symbol (abfd);
4538 newsym->name = fh->elf.root.root.string + 1;
4539 newsym->section = bfd_und_section_ptr;
4541 newsym->flags = BSF_WEAK;
4544 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4545 newsym->flags, newsym->section,
4546 newsym->value, NULL, FALSE, FALSE,
4550 fdh = (struct ppc_link_hash_entry *) bh;
4551 fdh->elf.non_elf = 0;
4553 fdh->is_func_descriptor = 1;
4560 /* Fix function descriptor symbols defined in .opd sections to be
4564 ppc64_elf_add_symbol_hook (bfd *ibfd,
4565 struct bfd_link_info *info,
4566 Elf_Internal_Sym *isym,
4567 const char **name ATTRIBUTE_UNUSED,
4568 flagword *flags ATTRIBUTE_UNUSED,
4570 bfd_vma *value ATTRIBUTE_UNUSED)
4572 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4574 if ((ibfd->flags & DYNAMIC) == 0)
4575 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4577 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4579 else if (*sec != NULL
4580 && strcmp ((*sec)->name, ".opd") == 0)
4581 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4586 /* This function makes an old ABI object reference to ".bar" cause the
4587 inclusion of a new ABI object archive that defines "bar".
4588 NAME is a symbol defined in an archive. Return a symbol in the hash
4589 table that might be satisfied by the archive symbols. */
4591 static struct elf_link_hash_entry *
4592 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4593 struct bfd_link_info *info,
4596 struct elf_link_hash_entry *h;
4600 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4602 /* Don't return this sym if it is a fake function descriptor
4603 created by add_symbol_adjust. */
4604 && !(h->root.type == bfd_link_hash_undefweak
4605 && ((struct ppc_link_hash_entry *) h)->fake))
4611 len = strlen (name);
4612 dot_name = bfd_alloc (abfd, len + 2);
4613 if (dot_name == NULL)
4614 return (struct elf_link_hash_entry *) 0 - 1;
4616 memcpy (dot_name + 1, name, len + 1);
4617 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4618 bfd_release (abfd, dot_name);
4622 /* This function satisfies all old ABI object references to ".bar" if a
4623 new ABI object defines "bar". Well, at least, undefined dot symbols
4624 are made weak. This stops later archive searches from including an
4625 object if we already have a function descriptor definition. It also
4626 prevents the linker complaining about undefined symbols.
4627 We also check and correct mismatched symbol visibility here. The
4628 most restrictive visibility of the function descriptor and the
4629 function entry symbol is used. */
4632 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4634 struct ppc_link_hash_table *htab;
4635 struct ppc_link_hash_entry *fdh;
4637 if (eh->elf.root.type == bfd_link_hash_indirect)
4640 if (eh->elf.root.type == bfd_link_hash_warning)
4641 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4643 if (eh->elf.root.root.string[0] != '.')
4646 htab = ppc_hash_table (info);
4650 fdh = lookup_fdh (eh, htab);
4653 if (!info->relocatable
4654 && (eh->elf.root.type == bfd_link_hash_undefined
4655 || eh->elf.root.type == bfd_link_hash_undefweak)
4656 && eh->elf.ref_regular)
4658 /* Make an undefweak function descriptor sym, which is enough to
4659 pull in an --as-needed shared lib, but won't cause link
4660 errors. Archives are handled elsewhere. */
4661 fdh = make_fdh (info, eh);
4664 fdh->elf.ref_regular = 1;
4669 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4670 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4671 if (entry_vis < descr_vis)
4672 fdh->elf.other += entry_vis - descr_vis;
4673 else if (entry_vis > descr_vis)
4674 eh->elf.other += descr_vis - entry_vis;
4676 if ((fdh->elf.root.type == bfd_link_hash_defined
4677 || fdh->elf.root.type == bfd_link_hash_defweak)
4678 && eh->elf.root.type == bfd_link_hash_undefined)
4680 eh->elf.root.type = bfd_link_hash_undefweak;
4681 eh->was_undefined = 1;
4682 htab->twiddled_syms = 1;
4689 /* Process list of dot-symbols we made in link_hash_newfunc. */
4692 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4694 struct ppc_link_hash_table *htab;
4695 struct ppc_link_hash_entry **p, *eh;
4697 if (!is_ppc64_elf (info->output_bfd))
4699 htab = ppc_hash_table (info);
4703 if (is_ppc64_elf (ibfd))
4705 p = &htab->dot_syms;
4706 while ((eh = *p) != NULL)
4709 if (!add_symbol_adjust (eh, info))
4711 p = &eh->u.next_dot_sym;
4715 /* Clear the list for non-ppc64 input files. */
4716 p = &htab->dot_syms;
4717 while ((eh = *p) != NULL)
4720 p = &eh->u.next_dot_sym;
4723 /* We need to fix the undefs list for any syms we have twiddled to
4725 if (htab->twiddled_syms)
4727 bfd_link_repair_undef_list (&htab->elf.root);
4728 htab->twiddled_syms = 0;
4733 /* Undo hash table changes when an --as-needed input file is determined
4734 not to be needed. */
4737 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4738 struct bfd_link_info *info)
4740 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4745 htab->dot_syms = NULL;
4749 /* If --just-symbols against a final linked binary, then assume we need
4750 toc adjusting stubs when calling functions defined there. */
4753 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4755 if ((sec->flags & SEC_CODE) != 0
4756 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
4757 && is_ppc64_elf (sec->owner))
4759 asection *got = bfd_get_section_by_name (sec->owner, ".got");
4761 && got->size >= elf_backend_got_header_size
4762 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
4763 sec->has_toc_reloc = 1;
4765 _bfd_elf_link_just_syms (sec, info);
4768 static struct plt_entry **
4769 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4770 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4772 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4773 struct plt_entry **local_plt;
4774 unsigned char *local_got_tls_masks;
4776 if (local_got_ents == NULL)
4778 bfd_size_type size = symtab_hdr->sh_info;
4780 size *= (sizeof (*local_got_ents)
4781 + sizeof (*local_plt)
4782 + sizeof (*local_got_tls_masks));
4783 local_got_ents = bfd_zalloc (abfd, size);
4784 if (local_got_ents == NULL)
4786 elf_local_got_ents (abfd) = local_got_ents;
4789 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4791 struct got_entry *ent;
4793 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4794 if (ent->addend == r_addend
4795 && ent->owner == abfd
4796 && ent->tls_type == tls_type)
4800 bfd_size_type amt = sizeof (*ent);
4801 ent = bfd_alloc (abfd, amt);
4804 ent->next = local_got_ents[r_symndx];
4805 ent->addend = r_addend;
4807 ent->tls_type = tls_type;
4808 ent->is_indirect = FALSE;
4809 ent->got.refcount = 0;
4810 local_got_ents[r_symndx] = ent;
4812 ent->got.refcount += 1;
4815 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4816 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
4817 local_got_tls_masks[r_symndx] |= tls_type;
4819 return local_plt + r_symndx;
4823 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4825 struct plt_entry *ent;
4827 for (ent = *plist; ent != NULL; ent = ent->next)
4828 if (ent->addend == addend)
4832 bfd_size_type amt = sizeof (*ent);
4833 ent = bfd_alloc (abfd, amt);
4837 ent->addend = addend;
4838 ent->plt.refcount = 0;
4841 ent->plt.refcount += 1;
4846 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4848 return (r_type == R_PPC64_REL24
4849 || r_type == R_PPC64_REL14
4850 || r_type == R_PPC64_REL14_BRTAKEN
4851 || r_type == R_PPC64_REL14_BRNTAKEN
4852 || r_type == R_PPC64_ADDR24
4853 || r_type == R_PPC64_ADDR14
4854 || r_type == R_PPC64_ADDR14_BRTAKEN
4855 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4858 /* Look through the relocs for a section during the first phase, and
4859 calculate needed space in the global offset table, procedure
4860 linkage table, and dynamic reloc sections. */
4863 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4864 asection *sec, const Elf_Internal_Rela *relocs)
4866 struct ppc_link_hash_table *htab;
4867 Elf_Internal_Shdr *symtab_hdr;
4868 struct elf_link_hash_entry **sym_hashes;
4869 const Elf_Internal_Rela *rel;
4870 const Elf_Internal_Rela *rel_end;
4872 asection **opd_sym_map;
4873 struct elf_link_hash_entry *tga, *dottga;
4875 if (info->relocatable)
4878 /* Don't do anything special with non-loaded, non-alloced sections.
4879 In particular, any relocs in such sections should not affect GOT
4880 and PLT reference counting (ie. we don't allow them to create GOT
4881 or PLT entries), there's no possibility or desire to optimize TLS
4882 relocs, and there's not much point in propagating relocs to shared
4883 libs that the dynamic linker won't relocate. */
4884 if ((sec->flags & SEC_ALLOC) == 0)
4887 BFD_ASSERT (is_ppc64_elf (abfd));
4889 htab = ppc_hash_table (info);
4893 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4894 FALSE, FALSE, TRUE);
4895 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4896 FALSE, FALSE, TRUE);
4897 symtab_hdr = &elf_symtab_hdr (abfd);
4898 sym_hashes = elf_sym_hashes (abfd);
4901 if (strcmp (sec->name, ".opd") == 0)
4903 /* Garbage collection needs some extra help with .opd sections.
4904 We don't want to necessarily keep everything referenced by
4905 relocs in .opd, as that would keep all functions. Instead,
4906 if we reference an .opd symbol (a function descriptor), we
4907 want to keep the function code symbol's section. This is
4908 easy for global symbols, but for local syms we need to keep
4909 information about the associated function section. */
4912 amt = sec->size * sizeof (*opd_sym_map) / 8;
4913 opd_sym_map = bfd_zalloc (abfd, amt);
4914 if (opd_sym_map == NULL)
4916 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4917 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4918 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4921 if (htab->sfpr == NULL
4922 && !create_linkage_sections (htab->elf.dynobj, info))
4925 rel_end = relocs + sec->reloc_count;
4926 for (rel = relocs; rel < rel_end; rel++)
4928 unsigned long r_symndx;
4929 struct elf_link_hash_entry *h;
4930 enum elf_ppc64_reloc_type r_type;
4932 struct _ppc64_elf_section_data *ppc64_sec;
4933 struct plt_entry **ifunc;
4935 r_symndx = ELF64_R_SYM (rel->r_info);
4936 if (r_symndx < symtab_hdr->sh_info)
4940 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4941 h = elf_follow_link (h);
4948 if (h->type == STT_GNU_IFUNC)
4951 ifunc = &h->plt.plist;
4956 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4961 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4963 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4964 rel->r_addend, PLT_IFUNC);
4969 r_type = ELF64_R_TYPE (rel->r_info);
4970 if (is_branch_reloc (r_type))
4972 if (h != NULL && (h == tga || h == dottga))
4975 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
4976 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
4977 /* We have a new-style __tls_get_addr call with a marker
4981 /* Mark this section as having an old-style call. */
4982 sec->has_tls_get_addr_call = 1;
4985 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4987 && !update_plt_info (abfd, ifunc, rel->r_addend))
4995 /* These special tls relocs tie a call to __tls_get_addr with
4996 its parameter symbol. */
4999 case R_PPC64_GOT_TLSLD16:
5000 case R_PPC64_GOT_TLSLD16_LO:
5001 case R_PPC64_GOT_TLSLD16_HI:
5002 case R_PPC64_GOT_TLSLD16_HA:
5003 tls_type = TLS_TLS | TLS_LD;
5006 case R_PPC64_GOT_TLSGD16:
5007 case R_PPC64_GOT_TLSGD16_LO:
5008 case R_PPC64_GOT_TLSGD16_HI:
5009 case R_PPC64_GOT_TLSGD16_HA:
5010 tls_type = TLS_TLS | TLS_GD;
5013 case R_PPC64_GOT_TPREL16_DS:
5014 case R_PPC64_GOT_TPREL16_LO_DS:
5015 case R_PPC64_GOT_TPREL16_HI:
5016 case R_PPC64_GOT_TPREL16_HA:
5017 if (!info->executable)
5018 info->flags |= DF_STATIC_TLS;
5019 tls_type = TLS_TLS | TLS_TPREL;
5022 case R_PPC64_GOT_DTPREL16_DS:
5023 case R_PPC64_GOT_DTPREL16_LO_DS:
5024 case R_PPC64_GOT_DTPREL16_HI:
5025 case R_PPC64_GOT_DTPREL16_HA:
5026 tls_type = TLS_TLS | TLS_DTPREL;
5028 sec->has_tls_reloc = 1;
5032 case R_PPC64_GOT16_DS:
5033 case R_PPC64_GOT16_HA:
5034 case R_PPC64_GOT16_HI:
5035 case R_PPC64_GOT16_LO:
5036 case R_PPC64_GOT16_LO_DS:
5037 /* This symbol requires a global offset table entry. */
5038 sec->has_toc_reloc = 1;
5039 if (r_type == R_PPC64_GOT_TLSLD16
5040 || r_type == R_PPC64_GOT_TLSGD16
5041 || r_type == R_PPC64_GOT_TPREL16_DS
5042 || r_type == R_PPC64_GOT_DTPREL16_DS
5043 || r_type == R_PPC64_GOT16
5044 || r_type == R_PPC64_GOT16_DS)
5046 htab->do_multi_toc = 1;
5047 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5050 if (ppc64_elf_tdata (abfd)->got == NULL
5051 && !create_got_section (abfd, info))
5056 struct ppc_link_hash_entry *eh;
5057 struct got_entry *ent;
5059 eh = (struct ppc_link_hash_entry *) h;
5060 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5061 if (ent->addend == rel->r_addend
5062 && ent->owner == abfd
5063 && ent->tls_type == tls_type)
5067 bfd_size_type amt = sizeof (*ent);
5068 ent = bfd_alloc (abfd, amt);
5071 ent->next = eh->elf.got.glist;
5072 ent->addend = rel->r_addend;
5074 ent->tls_type = tls_type;
5075 ent->is_indirect = FALSE;
5076 ent->got.refcount = 0;
5077 eh->elf.got.glist = ent;
5079 ent->got.refcount += 1;
5080 eh->tls_mask |= tls_type;
5083 /* This is a global offset table entry for a local symbol. */
5084 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5085 rel->r_addend, tls_type))
5089 case R_PPC64_PLT16_HA:
5090 case R_PPC64_PLT16_HI:
5091 case R_PPC64_PLT16_LO:
5094 /* This symbol requires a procedure linkage table entry. We
5095 actually build the entry in adjust_dynamic_symbol,
5096 because this might be a case of linking PIC code without
5097 linking in any dynamic objects, in which case we don't
5098 need to generate a procedure linkage table after all. */
5101 /* It does not make sense to have a procedure linkage
5102 table entry for a local symbol. */
5103 bfd_set_error (bfd_error_bad_value);
5108 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5111 if (h->root.root.string[0] == '.'
5112 && h->root.root.string[1] != '\0')
5113 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5117 /* The following relocations don't need to propagate the
5118 relocation if linking a shared object since they are
5119 section relative. */
5120 case R_PPC64_SECTOFF:
5121 case R_PPC64_SECTOFF_LO:
5122 case R_PPC64_SECTOFF_HI:
5123 case R_PPC64_SECTOFF_HA:
5124 case R_PPC64_SECTOFF_DS:
5125 case R_PPC64_SECTOFF_LO_DS:
5126 case R_PPC64_DTPREL16:
5127 case R_PPC64_DTPREL16_LO:
5128 case R_PPC64_DTPREL16_HI:
5129 case R_PPC64_DTPREL16_HA:
5130 case R_PPC64_DTPREL16_DS:
5131 case R_PPC64_DTPREL16_LO_DS:
5132 case R_PPC64_DTPREL16_HIGHER:
5133 case R_PPC64_DTPREL16_HIGHERA:
5134 case R_PPC64_DTPREL16_HIGHEST:
5135 case R_PPC64_DTPREL16_HIGHESTA:
5140 case R_PPC64_REL16_LO:
5141 case R_PPC64_REL16_HI:
5142 case R_PPC64_REL16_HA:
5146 case R_PPC64_TOC16_DS:
5147 htab->do_multi_toc = 1;
5148 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5149 case R_PPC64_TOC16_LO:
5150 case R_PPC64_TOC16_HI:
5151 case R_PPC64_TOC16_HA:
5152 case R_PPC64_TOC16_LO_DS:
5153 sec->has_toc_reloc = 1;
5156 /* This relocation describes the C++ object vtable hierarchy.
5157 Reconstruct it for later use during GC. */
5158 case R_PPC64_GNU_VTINHERIT:
5159 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5163 /* This relocation describes which C++ vtable entries are actually
5164 used. Record for later use during GC. */
5165 case R_PPC64_GNU_VTENTRY:
5166 BFD_ASSERT (h != NULL);
5168 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5173 case R_PPC64_REL14_BRTAKEN:
5174 case R_PPC64_REL14_BRNTAKEN:
5176 asection *dest = NULL;
5178 /* Heuristic: If jumping outside our section, chances are
5179 we are going to need a stub. */
5182 /* If the sym is weak it may be overridden later, so
5183 don't assume we know where a weak sym lives. */
5184 if (h->root.type == bfd_link_hash_defined)
5185 dest = h->root.u.def.section;
5189 Elf_Internal_Sym *isym;
5191 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5196 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5200 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5205 if (h != NULL && ifunc == NULL)
5207 /* We may need a .plt entry if the function this reloc
5208 refers to is in a shared lib. */
5209 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5212 if (h->root.root.string[0] == '.'
5213 && h->root.root.string[1] != '\0')
5214 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5215 if (h == tga || h == dottga)
5216 sec->has_tls_reloc = 1;
5220 case R_PPC64_TPREL64:
5221 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5222 if (!info->executable)
5223 info->flags |= DF_STATIC_TLS;
5226 case R_PPC64_DTPMOD64:
5227 if (rel + 1 < rel_end
5228 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5229 && rel[1].r_offset == rel->r_offset + 8)
5230 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5232 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5235 case R_PPC64_DTPREL64:
5236 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5238 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5239 && rel[-1].r_offset == rel->r_offset - 8)
5240 /* This is the second reloc of a dtpmod, dtprel pair.
5241 Don't mark with TLS_DTPREL. */
5245 sec->has_tls_reloc = 1;
5248 struct ppc_link_hash_entry *eh;
5249 eh = (struct ppc_link_hash_entry *) h;
5250 eh->tls_mask |= tls_type;
5253 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5254 rel->r_addend, tls_type))
5257 ppc64_sec = ppc64_elf_section_data (sec);
5258 if (ppc64_sec->sec_type != sec_toc)
5262 /* One extra to simplify get_tls_mask. */
5263 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5264 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5265 if (ppc64_sec->u.toc.symndx == NULL)
5267 amt = sec->size * sizeof (bfd_vma) / 8;
5268 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5269 if (ppc64_sec->u.toc.add == NULL)
5271 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5272 ppc64_sec->sec_type = sec_toc;
5274 BFD_ASSERT (rel->r_offset % 8 == 0);
5275 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5276 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5278 /* Mark the second slot of a GD or LD entry.
5279 -1 to indicate GD and -2 to indicate LD. */
5280 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5281 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5282 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5283 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5286 case R_PPC64_TPREL16:
5287 case R_PPC64_TPREL16_LO:
5288 case R_PPC64_TPREL16_HI:
5289 case R_PPC64_TPREL16_HA:
5290 case R_PPC64_TPREL16_DS:
5291 case R_PPC64_TPREL16_LO_DS:
5292 case R_PPC64_TPREL16_HIGHER:
5293 case R_PPC64_TPREL16_HIGHERA:
5294 case R_PPC64_TPREL16_HIGHEST:
5295 case R_PPC64_TPREL16_HIGHESTA:
5298 if (!info->executable)
5299 info->flags |= DF_STATIC_TLS;
5304 case R_PPC64_ADDR64:
5305 if (opd_sym_map != NULL
5306 && rel + 1 < rel_end
5307 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5311 if (h->root.root.string[0] == '.'
5312 && h->root.root.string[1] != 0
5313 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5316 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5321 Elf_Internal_Sym *isym;
5323 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5328 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5329 if (s != NULL && s != sec)
5330 opd_sym_map[rel->r_offset / 8] = s;
5338 case R_PPC64_ADDR14:
5339 case R_PPC64_ADDR14_BRNTAKEN:
5340 case R_PPC64_ADDR14_BRTAKEN:
5341 case R_PPC64_ADDR16:
5342 case R_PPC64_ADDR16_DS:
5343 case R_PPC64_ADDR16_HA:
5344 case R_PPC64_ADDR16_HI:
5345 case R_PPC64_ADDR16_HIGHER:
5346 case R_PPC64_ADDR16_HIGHERA:
5347 case R_PPC64_ADDR16_HIGHEST:
5348 case R_PPC64_ADDR16_HIGHESTA:
5349 case R_PPC64_ADDR16_LO:
5350 case R_PPC64_ADDR16_LO_DS:
5351 case R_PPC64_ADDR24:
5352 case R_PPC64_ADDR32:
5353 case R_PPC64_UADDR16:
5354 case R_PPC64_UADDR32:
5355 case R_PPC64_UADDR64:
5357 if (h != NULL && !info->shared)
5358 /* We may need a copy reloc. */
5361 /* Don't propagate .opd relocs. */
5362 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5365 /* If we are creating a shared library, and this is a reloc
5366 against a global symbol, or a non PC relative reloc
5367 against a local symbol, then we need to copy the reloc
5368 into the shared library. However, if we are linking with
5369 -Bsymbolic, we do not need to copy a reloc against a
5370 global symbol which is defined in an object we are
5371 including in the link (i.e., DEF_REGULAR is set). At
5372 this point we have not seen all the input files, so it is
5373 possible that DEF_REGULAR is not set now but will be set
5374 later (it is never cleared). In case of a weak definition,
5375 DEF_REGULAR may be cleared later by a strong definition in
5376 a shared library. We account for that possibility below by
5377 storing information in the dyn_relocs field of the hash
5378 table entry. A similar situation occurs when creating
5379 shared libraries and symbol visibility changes render the
5382 If on the other hand, we are creating an executable, we
5383 may need to keep relocations for symbols satisfied by a
5384 dynamic library if we manage to avoid copy relocs for the
5388 && (must_be_dyn_reloc (info, r_type)
5390 && (! info->symbolic
5391 || h->root.type == bfd_link_hash_defweak
5392 || !h->def_regular))))
5393 || (ELIMINATE_COPY_RELOCS
5396 && (h->root.type == bfd_link_hash_defweak
5397 || !h->def_regular))
5401 struct ppc_dyn_relocs *p;
5402 struct ppc_dyn_relocs **head;
5404 /* We must copy these reloc types into the output file.
5405 Create a reloc section in dynobj and make room for
5409 sreloc = _bfd_elf_make_dynamic_reloc_section
5410 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5416 /* If this is a global symbol, we count the number of
5417 relocations we need for this symbol. */
5420 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5424 /* Track dynamic relocs needed for local syms too.
5425 We really need local syms available to do this
5429 Elf_Internal_Sym *isym;
5431 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5436 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5440 vpp = &elf_section_data (s)->local_dynrel;
5441 head = (struct ppc_dyn_relocs **) vpp;
5445 if (p == NULL || p->sec != sec)
5447 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5458 if (!must_be_dyn_reloc (info, r_type))
5471 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5472 of the code entry point, and its section. */
5475 opd_entry_value (asection *opd_sec,
5477 asection **code_sec,
5480 bfd *opd_bfd = opd_sec->owner;
5481 Elf_Internal_Rela *relocs;
5482 Elf_Internal_Rela *lo, *hi, *look;
5485 /* No relocs implies we are linking a --just-symbols object. */
5486 if (opd_sec->reloc_count == 0)
5490 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5491 return (bfd_vma) -1;
5493 val = bfd_get_64 (opd_bfd, buf);
5494 if (code_sec != NULL)
5496 asection *sec, *likely = NULL;
5497 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5499 && (sec->flags & SEC_LOAD) != 0
5500 && (sec->flags & SEC_ALLOC) != 0)
5505 if (code_off != NULL)
5506 *code_off = val - likely->vma;
5512 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5514 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5516 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5518 /* Go find the opd reloc at the sym address. */
5520 BFD_ASSERT (lo != NULL);
5521 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5525 look = lo + (hi - lo) / 2;
5526 if (look->r_offset < offset)
5528 else if (look->r_offset > offset)
5532 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5534 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5535 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5537 unsigned long symndx = ELF64_R_SYM (look->r_info);
5540 if (symndx < symtab_hdr->sh_info)
5542 Elf_Internal_Sym *sym;
5544 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5547 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5548 symtab_hdr->sh_info,
5549 0, NULL, NULL, NULL);
5552 symtab_hdr->contents = (bfd_byte *) sym;
5556 val = sym->st_value;
5557 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5558 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5562 struct elf_link_hash_entry **sym_hashes;
5563 struct elf_link_hash_entry *rh;
5565 sym_hashes = elf_sym_hashes (opd_bfd);
5566 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5567 rh = elf_follow_link (rh);
5568 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5569 || rh->root.type == bfd_link_hash_defweak);
5570 val = rh->root.u.def.value;
5571 sec = rh->root.u.def.section;
5573 val += look->r_addend;
5574 if (code_off != NULL)
5576 if (code_sec != NULL)
5578 if (sec != NULL && sec->output_section != NULL)
5579 val += sec->output_section->vma + sec->output_offset;
5588 /* Return true if symbol is defined in a regular object file. */
5591 is_static_defined (struct elf_link_hash_entry *h)
5593 return ((h->root.type == bfd_link_hash_defined
5594 || h->root.type == bfd_link_hash_defweak)
5595 && h->root.u.def.section != NULL
5596 && h->root.u.def.section->output_section != NULL);
5599 /* If FDH is a function descriptor symbol, return the associated code
5600 entry symbol if it is defined. Return NULL otherwise. */
5602 static struct ppc_link_hash_entry *
5603 defined_code_entry (struct ppc_link_hash_entry *fdh)
5605 if (fdh->is_func_descriptor)
5607 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5608 if (fh->elf.root.type == bfd_link_hash_defined
5609 || fh->elf.root.type == bfd_link_hash_defweak)
5615 /* If FH is a function code entry symbol, return the associated
5616 function descriptor symbol if it is defined. Return NULL otherwise. */
5618 static struct ppc_link_hash_entry *
5619 defined_func_desc (struct ppc_link_hash_entry *fh)
5622 && fh->oh->is_func_descriptor)
5624 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5625 if (fdh->elf.root.type == bfd_link_hash_defined
5626 || fdh->elf.root.type == bfd_link_hash_defweak)
5632 /* Mark all our entry sym sections, both opd and code section. */
5635 ppc64_elf_gc_keep (struct bfd_link_info *info)
5637 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5638 struct bfd_sym_chain *sym;
5643 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5645 struct ppc_link_hash_entry *eh, *fh;
5648 eh = (struct ppc_link_hash_entry *)
5649 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5652 if (eh->elf.root.type != bfd_link_hash_defined
5653 && eh->elf.root.type != bfd_link_hash_defweak)
5656 fh = defined_code_entry (eh);
5659 sec = fh->elf.root.u.def.section;
5660 sec->flags |= SEC_KEEP;
5662 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5663 && opd_entry_value (eh->elf.root.u.def.section,
5664 eh->elf.root.u.def.value,
5665 &sec, NULL) != (bfd_vma) -1)
5666 sec->flags |= SEC_KEEP;
5668 sec = eh->elf.root.u.def.section;
5669 sec->flags |= SEC_KEEP;
5673 /* Mark sections containing dynamically referenced symbols. When
5674 building shared libraries, we must assume that any visible symbol is
5678 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5680 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5681 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5682 struct ppc_link_hash_entry *fdh;
5684 if (eh->elf.root.type == bfd_link_hash_warning)
5685 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5687 /* Dynamic linking info is on the func descriptor sym. */
5688 fdh = defined_func_desc (eh);
5692 if ((eh->elf.root.type == bfd_link_hash_defined
5693 || eh->elf.root.type == bfd_link_hash_defweak)
5694 && (eh->elf.ref_dynamic
5695 || (!info->executable
5696 && eh->elf.def_regular
5697 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5698 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5701 struct ppc_link_hash_entry *fh;
5703 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5705 /* Function descriptor syms cause the associated
5706 function code sym section to be marked. */
5707 fh = defined_code_entry (eh);
5710 code_sec = fh->elf.root.u.def.section;
5711 code_sec->flags |= SEC_KEEP;
5713 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5714 && opd_entry_value (eh->elf.root.u.def.section,
5715 eh->elf.root.u.def.value,
5716 &code_sec, NULL) != (bfd_vma) -1)
5717 code_sec->flags |= SEC_KEEP;
5723 /* Return the section that should be marked against GC for a given
5727 ppc64_elf_gc_mark_hook (asection *sec,
5728 struct bfd_link_info *info,
5729 Elf_Internal_Rela *rel,
5730 struct elf_link_hash_entry *h,
5731 Elf_Internal_Sym *sym)
5735 /* Syms return NULL if we're marking .opd, so we avoid marking all
5736 function sections, as all functions are referenced in .opd. */
5738 if (get_opd_info (sec) != NULL)
5743 enum elf_ppc64_reloc_type r_type;
5744 struct ppc_link_hash_entry *eh, *fh, *fdh;
5746 r_type = ELF64_R_TYPE (rel->r_info);
5749 case R_PPC64_GNU_VTINHERIT:
5750 case R_PPC64_GNU_VTENTRY:
5754 switch (h->root.type)
5756 case bfd_link_hash_defined:
5757 case bfd_link_hash_defweak:
5758 eh = (struct ppc_link_hash_entry *) h;
5759 fdh = defined_func_desc (eh);
5763 /* Function descriptor syms cause the associated
5764 function code sym section to be marked. */
5765 fh = defined_code_entry (eh);
5768 /* They also mark their opd section. */
5769 eh->elf.root.u.def.section->gc_mark = 1;
5771 rsec = fh->elf.root.u.def.section;
5773 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5774 && opd_entry_value (eh->elf.root.u.def.section,
5775 eh->elf.root.u.def.value,
5776 &rsec, NULL) != (bfd_vma) -1)
5777 eh->elf.root.u.def.section->gc_mark = 1;
5779 rsec = h->root.u.def.section;
5782 case bfd_link_hash_common:
5783 rsec = h->root.u.c.p->section;
5787 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5793 struct _opd_sec_data *opd;
5795 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5796 opd = get_opd_info (rsec);
5797 if (opd != NULL && opd->func_sec != NULL)
5801 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5808 /* Update the .got, .plt. and dynamic reloc reference counts for the
5809 section being removed. */
5812 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5813 asection *sec, const Elf_Internal_Rela *relocs)
5815 struct ppc_link_hash_table *htab;
5816 Elf_Internal_Shdr *symtab_hdr;
5817 struct elf_link_hash_entry **sym_hashes;
5818 struct got_entry **local_got_ents;
5819 const Elf_Internal_Rela *rel, *relend;
5821 if (info->relocatable)
5824 if ((sec->flags & SEC_ALLOC) == 0)
5827 elf_section_data (sec)->local_dynrel = NULL;
5829 htab = ppc_hash_table (info);
5833 symtab_hdr = &elf_symtab_hdr (abfd);
5834 sym_hashes = elf_sym_hashes (abfd);
5835 local_got_ents = elf_local_got_ents (abfd);
5837 relend = relocs + sec->reloc_count;
5838 for (rel = relocs; rel < relend; rel++)
5840 unsigned long r_symndx;
5841 enum elf_ppc64_reloc_type r_type;
5842 struct elf_link_hash_entry *h = NULL;
5843 unsigned char tls_type = 0;
5845 r_symndx = ELF64_R_SYM (rel->r_info);
5846 r_type = ELF64_R_TYPE (rel->r_info);
5847 if (r_symndx >= symtab_hdr->sh_info)
5849 struct ppc_link_hash_entry *eh;
5850 struct ppc_dyn_relocs **pp;
5851 struct ppc_dyn_relocs *p;
5853 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5854 h = elf_follow_link (h);
5855 eh = (struct ppc_link_hash_entry *) h;
5857 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5860 /* Everything must go for SEC. */
5866 if (is_branch_reloc (r_type))
5868 struct plt_entry **ifunc = NULL;
5871 if (h->type == STT_GNU_IFUNC)
5872 ifunc = &h->plt.plist;
5874 else if (local_got_ents != NULL)
5876 struct plt_entry **local_plt = (struct plt_entry **)
5877 (local_got_ents + symtab_hdr->sh_info);
5878 unsigned char *local_got_tls_masks = (unsigned char *)
5879 (local_plt + symtab_hdr->sh_info);
5880 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5881 ifunc = local_plt + r_symndx;
5885 struct plt_entry *ent;
5887 for (ent = *ifunc; ent != NULL; ent = ent->next)
5888 if (ent->addend == rel->r_addend)
5892 if (ent->plt.refcount > 0)
5893 ent->plt.refcount -= 1;
5900 case R_PPC64_GOT_TLSLD16:
5901 case R_PPC64_GOT_TLSLD16_LO:
5902 case R_PPC64_GOT_TLSLD16_HI:
5903 case R_PPC64_GOT_TLSLD16_HA:
5904 tls_type = TLS_TLS | TLS_LD;
5907 case R_PPC64_GOT_TLSGD16:
5908 case R_PPC64_GOT_TLSGD16_LO:
5909 case R_PPC64_GOT_TLSGD16_HI:
5910 case R_PPC64_GOT_TLSGD16_HA:
5911 tls_type = TLS_TLS | TLS_GD;
5914 case R_PPC64_GOT_TPREL16_DS:
5915 case R_PPC64_GOT_TPREL16_LO_DS:
5916 case R_PPC64_GOT_TPREL16_HI:
5917 case R_PPC64_GOT_TPREL16_HA:
5918 tls_type = TLS_TLS | TLS_TPREL;
5921 case R_PPC64_GOT_DTPREL16_DS:
5922 case R_PPC64_GOT_DTPREL16_LO_DS:
5923 case R_PPC64_GOT_DTPREL16_HI:
5924 case R_PPC64_GOT_DTPREL16_HA:
5925 tls_type = TLS_TLS | TLS_DTPREL;
5929 case R_PPC64_GOT16_DS:
5930 case R_PPC64_GOT16_HA:
5931 case R_PPC64_GOT16_HI:
5932 case R_PPC64_GOT16_LO:
5933 case R_PPC64_GOT16_LO_DS:
5936 struct got_entry *ent;
5941 ent = local_got_ents[r_symndx];
5943 for (; ent != NULL; ent = ent->next)
5944 if (ent->addend == rel->r_addend
5945 && ent->owner == abfd
5946 && ent->tls_type == tls_type)
5950 if (ent->got.refcount > 0)
5951 ent->got.refcount -= 1;
5955 case R_PPC64_PLT16_HA:
5956 case R_PPC64_PLT16_HI:
5957 case R_PPC64_PLT16_LO:
5961 case R_PPC64_REL14_BRNTAKEN:
5962 case R_PPC64_REL14_BRTAKEN:
5966 struct plt_entry *ent;
5968 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5969 if (ent->addend == rel->r_addend)
5971 if (ent != NULL && ent->plt.refcount > 0)
5972 ent->plt.refcount -= 1;
5983 /* The maximum size of .sfpr. */
5984 #define SFPR_MAX (218*4)
5986 struct sfpr_def_parms
5988 const char name[12];
5989 unsigned char lo, hi;
5990 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5991 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5994 /* Auto-generate _save*, _rest* functions in .sfpr. */
5997 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5999 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6001 size_t len = strlen (parm->name);
6002 bfd_boolean writing = FALSE;
6008 memcpy (sym, parm->name, len);
6011 for (i = parm->lo; i <= parm->hi; i++)
6013 struct elf_link_hash_entry *h;
6015 sym[len + 0] = i / 10 + '0';
6016 sym[len + 1] = i % 10 + '0';
6017 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6021 h->root.type = bfd_link_hash_defined;
6022 h->root.u.def.section = htab->sfpr;
6023 h->root.u.def.value = htab->sfpr->size;
6026 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6028 if (htab->sfpr->contents == NULL)
6030 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6031 if (htab->sfpr->contents == NULL)
6037 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6039 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6041 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6042 htab->sfpr->size = p - htab->sfpr->contents;
6050 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6052 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6057 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6059 p = savegpr0 (abfd, p, r);
6060 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6062 bfd_put_32 (abfd, BLR, p);
6067 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6069 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6074 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6076 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6078 p = restgpr0 (abfd, p, r);
6079 bfd_put_32 (abfd, MTLR_R0, p);
6083 p = restgpr0 (abfd, p, 30);
6084 p = restgpr0 (abfd, p, 31);
6086 bfd_put_32 (abfd, BLR, p);
6091 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6093 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6098 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6100 p = savegpr1 (abfd, p, r);
6101 bfd_put_32 (abfd, BLR, p);
6106 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6108 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6113 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6115 p = restgpr1 (abfd, p, r);
6116 bfd_put_32 (abfd, BLR, p);
6121 savefpr (bfd *abfd, bfd_byte *p, int r)
6123 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6128 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6130 p = savefpr (abfd, p, r);
6131 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6133 bfd_put_32 (abfd, BLR, p);
6138 restfpr (bfd *abfd, bfd_byte *p, int r)
6140 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6145 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6147 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6149 p = restfpr (abfd, p, r);
6150 bfd_put_32 (abfd, MTLR_R0, p);
6154 p = restfpr (abfd, p, 30);
6155 p = restfpr (abfd, p, 31);
6157 bfd_put_32 (abfd, BLR, p);
6162 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6164 p = savefpr (abfd, p, r);
6165 bfd_put_32 (abfd, BLR, p);
6170 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6172 p = restfpr (abfd, p, r);
6173 bfd_put_32 (abfd, BLR, p);
6178 savevr (bfd *abfd, bfd_byte *p, int r)
6180 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6182 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6187 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6189 p = savevr (abfd, p, r);
6190 bfd_put_32 (abfd, BLR, p);
6195 restvr (bfd *abfd, bfd_byte *p, int r)
6197 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6199 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6204 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6206 p = restvr (abfd, p, r);
6207 bfd_put_32 (abfd, BLR, p);
6211 /* Called via elf_link_hash_traverse to transfer dynamic linking
6212 information on function code symbol entries to their corresponding
6213 function descriptor symbol entries. */
6216 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6218 struct bfd_link_info *info;
6219 struct ppc_link_hash_table *htab;
6220 struct plt_entry *ent;
6221 struct ppc_link_hash_entry *fh;
6222 struct ppc_link_hash_entry *fdh;
6223 bfd_boolean force_local;
6225 fh = (struct ppc_link_hash_entry *) h;
6226 if (fh->elf.root.type == bfd_link_hash_indirect)
6229 if (fh->elf.root.type == bfd_link_hash_warning)
6230 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
6233 htab = ppc_hash_table (info);
6237 /* Resolve undefined references to dot-symbols as the value
6238 in the function descriptor, if we have one in a regular object.
6239 This is to satisfy cases like ".quad .foo". Calls to functions
6240 in dynamic objects are handled elsewhere. */
6241 if (fh->elf.root.type == bfd_link_hash_undefweak
6242 && fh->was_undefined
6243 && (fdh = defined_func_desc (fh)) != NULL
6244 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6245 && opd_entry_value (fdh->elf.root.u.def.section,
6246 fdh->elf.root.u.def.value,
6247 &fh->elf.root.u.def.section,
6248 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6250 fh->elf.root.type = fdh->elf.root.type;
6251 fh->elf.forced_local = 1;
6252 fh->elf.def_regular = fdh->elf.def_regular;
6253 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6256 /* If this is a function code symbol, transfer dynamic linking
6257 information to the function descriptor symbol. */
6261 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6262 if (ent->plt.refcount > 0)
6265 || fh->elf.root.root.string[0] != '.'
6266 || fh->elf.root.root.string[1] == '\0')
6269 /* Find the corresponding function descriptor symbol. Create it
6270 as undefined if necessary. */
6272 fdh = lookup_fdh (fh, htab);
6274 && !info->executable
6275 && (fh->elf.root.type == bfd_link_hash_undefined
6276 || fh->elf.root.type == bfd_link_hash_undefweak))
6278 fdh = make_fdh (info, fh);
6283 /* Fake function descriptors are made undefweak. If the function
6284 code symbol is strong undefined, make the fake sym the same.
6285 If the function code symbol is defined, then force the fake
6286 descriptor local; We can't support overriding of symbols in a
6287 shared library on a fake descriptor. */
6291 && fdh->elf.root.type == bfd_link_hash_undefweak)
6293 if (fh->elf.root.type == bfd_link_hash_undefined)
6295 fdh->elf.root.type = bfd_link_hash_undefined;
6296 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6298 else if (fh->elf.root.type == bfd_link_hash_defined
6299 || fh->elf.root.type == bfd_link_hash_defweak)
6301 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6306 && !fdh->elf.forced_local
6307 && (!info->executable
6308 || fdh->elf.def_dynamic
6309 || fdh->elf.ref_dynamic
6310 || (fdh->elf.root.type == bfd_link_hash_undefweak
6311 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6313 if (fdh->elf.dynindx == -1)
6314 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6316 fdh->elf.ref_regular |= fh->elf.ref_regular;
6317 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6318 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6319 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6320 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6322 move_plt_plist (fh, fdh);
6323 fdh->elf.needs_plt = 1;
6325 fdh->is_func_descriptor = 1;
6330 /* Now that the info is on the function descriptor, clear the
6331 function code sym info. Any function code syms for which we
6332 don't have a definition in a regular file, we force local.
6333 This prevents a shared library from exporting syms that have
6334 been imported from another library. Function code syms that
6335 are really in the library we must leave global to prevent the
6336 linker dragging in a definition from a static library. */
6337 force_local = (!fh->elf.def_regular
6339 || !fdh->elf.def_regular
6340 || fdh->elf.forced_local);
6341 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6346 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6347 this hook to a) provide some gcc support functions, and b) transfer
6348 dynamic linking information gathered so far on function code symbol
6349 entries, to their corresponding function descriptor symbol entries. */
6352 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6353 struct bfd_link_info *info)
6355 struct ppc_link_hash_table *htab;
6357 const struct sfpr_def_parms funcs[] =
6359 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6360 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6361 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6362 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6363 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6364 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6365 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6366 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6367 { "._savef", 14, 31, savefpr, savefpr1_tail },
6368 { "._restf", 14, 31, restfpr, restfpr1_tail },
6369 { "_savevr_", 20, 31, savevr, savevr_tail },
6370 { "_restvr_", 20, 31, restvr, restvr_tail }
6373 htab = ppc_hash_table (info);
6377 if (htab->sfpr == NULL)
6378 /* We don't have any relocs. */
6381 /* Provide any missing _save* and _rest* functions. */
6382 htab->sfpr->size = 0;
6383 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6384 if (!sfpr_define (info, &funcs[i]))
6387 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6389 if (htab->sfpr->size == 0)
6390 htab->sfpr->flags |= SEC_EXCLUDE;
6395 /* Adjust a symbol defined by a dynamic object and referenced by a
6396 regular object. The current definition is in some section of the
6397 dynamic object, but we're not including those sections. We have to
6398 change the definition to something the rest of the link can
6402 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6403 struct elf_link_hash_entry *h)
6405 struct ppc_link_hash_table *htab;
6408 htab = ppc_hash_table (info);
6412 /* Deal with function syms. */
6413 if (h->type == STT_FUNC
6414 || h->type == STT_GNU_IFUNC
6417 /* Clear procedure linkage table information for any symbol that
6418 won't need a .plt entry. */
6419 struct plt_entry *ent;
6420 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6421 if (ent->plt.refcount > 0)
6424 || (h->type != STT_GNU_IFUNC
6425 && (SYMBOL_CALLS_LOCAL (info, h)
6426 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6427 && h->root.type == bfd_link_hash_undefweak))))
6429 h->plt.plist = NULL;
6434 h->plt.plist = NULL;
6436 /* If this is a weak symbol, and there is a real definition, the
6437 processor independent code will have arranged for us to see the
6438 real definition first, and we can just use the same value. */
6439 if (h->u.weakdef != NULL)
6441 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6442 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6443 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6444 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6445 if (ELIMINATE_COPY_RELOCS)
6446 h->non_got_ref = h->u.weakdef->non_got_ref;
6450 /* If we are creating a shared library, we must presume that the
6451 only references to the symbol are via the global offset table.
6452 For such cases we need not do anything here; the relocations will
6453 be handled correctly by relocate_section. */
6457 /* If there are no references to this symbol that do not use the
6458 GOT, we don't need to generate a copy reloc. */
6459 if (!h->non_got_ref)
6462 /* Don't generate a copy reloc for symbols defined in the executable. */
6463 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6466 if (ELIMINATE_COPY_RELOCS)
6468 struct ppc_link_hash_entry * eh;
6469 struct ppc_dyn_relocs *p;
6471 eh = (struct ppc_link_hash_entry *) h;
6472 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6474 s = p->sec->output_section;
6475 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6479 /* If we didn't find any dynamic relocs in read-only sections, then
6480 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6488 if (h->plt.plist != NULL)
6490 /* We should never get here, but unfortunately there are versions
6491 of gcc out there that improperly (for this ABI) put initialized
6492 function pointers, vtable refs and suchlike in read-only
6493 sections. Allow them to proceed, but warn that this might
6494 break at runtime. */
6495 (*_bfd_error_handler)
6496 (_("copy reloc against `%s' requires lazy plt linking; "
6497 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6498 h->root.root.string);
6501 /* This is a reference to a symbol defined by a dynamic object which
6502 is not a function. */
6506 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6507 h->root.root.string);
6511 /* We must allocate the symbol in our .dynbss section, which will
6512 become part of the .bss section of the executable. There will be
6513 an entry for this symbol in the .dynsym section. The dynamic
6514 object will contain position independent code, so all references
6515 from the dynamic object to this symbol will go through the global
6516 offset table. The dynamic linker will use the .dynsym entry to
6517 determine the address it must put in the global offset table, so
6518 both the dynamic object and the regular object will refer to the
6519 same memory location for the variable. */
6521 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6522 to copy the initial value out of the dynamic object and into the
6523 runtime process image. We need to remember the offset into the
6524 .rela.bss section we are going to use. */
6525 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6527 htab->relbss->size += sizeof (Elf64_External_Rela);
6533 return _bfd_elf_adjust_dynamic_copy (h, s);
6536 /* If given a function descriptor symbol, hide both the function code
6537 sym and the descriptor. */
6539 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6540 struct elf_link_hash_entry *h,
6541 bfd_boolean force_local)
6543 struct ppc_link_hash_entry *eh;
6544 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6546 eh = (struct ppc_link_hash_entry *) h;
6547 if (eh->is_func_descriptor)
6549 struct ppc_link_hash_entry *fh = eh->oh;
6554 struct ppc_link_hash_table *htab;
6557 /* We aren't supposed to use alloca in BFD because on
6558 systems which do not have alloca the version in libiberty
6559 calls xmalloc, which might cause the program to crash
6560 when it runs out of memory. This function doesn't have a
6561 return status, so there's no way to gracefully return an
6562 error. So cheat. We know that string[-1] can be safely
6563 accessed; It's either a string in an ELF string table,
6564 or allocated in an objalloc structure. */
6566 p = eh->elf.root.root.string - 1;
6569 htab = ppc_hash_table (info);
6573 fh = (struct ppc_link_hash_entry *)
6574 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6577 /* Unfortunately, if it so happens that the string we were
6578 looking for was allocated immediately before this string,
6579 then we overwrote the string terminator. That's the only
6580 reason the lookup should fail. */
6583 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6584 while (q >= eh->elf.root.root.string && *q == *p)
6586 if (q < eh->elf.root.root.string && *p == '.')
6587 fh = (struct ppc_link_hash_entry *)
6588 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6597 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6602 get_sym_h (struct elf_link_hash_entry **hp,
6603 Elf_Internal_Sym **symp,
6605 unsigned char **tls_maskp,
6606 Elf_Internal_Sym **locsymsp,
6607 unsigned long r_symndx,
6610 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6612 if (r_symndx >= symtab_hdr->sh_info)
6614 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6615 struct elf_link_hash_entry *h;
6617 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6618 h = elf_follow_link (h);
6626 if (symsecp != NULL)
6628 asection *symsec = NULL;
6629 if (h->root.type == bfd_link_hash_defined
6630 || h->root.type == bfd_link_hash_defweak)
6631 symsec = h->root.u.def.section;
6635 if (tls_maskp != NULL)
6637 struct ppc_link_hash_entry *eh;
6639 eh = (struct ppc_link_hash_entry *) h;
6640 *tls_maskp = &eh->tls_mask;
6645 Elf_Internal_Sym *sym;
6646 Elf_Internal_Sym *locsyms = *locsymsp;
6648 if (locsyms == NULL)
6650 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6651 if (locsyms == NULL)
6652 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6653 symtab_hdr->sh_info,
6654 0, NULL, NULL, NULL);
6655 if (locsyms == NULL)
6657 *locsymsp = locsyms;
6659 sym = locsyms + r_symndx;
6667 if (symsecp != NULL)
6668 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6670 if (tls_maskp != NULL)
6672 struct got_entry **lgot_ents;
6673 unsigned char *tls_mask;
6676 lgot_ents = elf_local_got_ents (ibfd);
6677 if (lgot_ents != NULL)
6679 struct plt_entry **local_plt = (struct plt_entry **)
6680 (lgot_ents + symtab_hdr->sh_info);
6681 unsigned char *lgot_masks = (unsigned char *)
6682 (local_plt + symtab_hdr->sh_info);
6683 tls_mask = &lgot_masks[r_symndx];
6685 *tls_maskp = tls_mask;
6691 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6692 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6693 type suitable for optimization, and 1 otherwise. */
6696 get_tls_mask (unsigned char **tls_maskp,
6697 unsigned long *toc_symndx,
6698 bfd_vma *toc_addend,
6699 Elf_Internal_Sym **locsymsp,
6700 const Elf_Internal_Rela *rel,
6703 unsigned long r_symndx;
6705 struct elf_link_hash_entry *h;
6706 Elf_Internal_Sym *sym;
6710 r_symndx = ELF64_R_SYM (rel->r_info);
6711 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6714 if ((*tls_maskp != NULL && **tls_maskp != 0)
6716 || ppc64_elf_section_data (sec) == NULL
6717 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6720 /* Look inside a TOC section too. */
6723 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6724 off = h->root.u.def.value;
6727 off = sym->st_value;
6728 off += rel->r_addend;
6729 BFD_ASSERT (off % 8 == 0);
6730 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6731 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6732 if (toc_symndx != NULL)
6733 *toc_symndx = r_symndx;
6734 if (toc_addend != NULL)
6735 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6736 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6738 if ((h == NULL || is_static_defined (h))
6739 && (next_r == -1 || next_r == -2))
6744 /* Adjust all global syms defined in opd sections. In gcc generated
6745 code for the old ABI, these will already have been done. */
6748 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6750 struct ppc_link_hash_entry *eh;
6752 struct _opd_sec_data *opd;
6754 if (h->root.type == bfd_link_hash_indirect)
6757 if (h->root.type == bfd_link_hash_warning)
6758 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6760 if (h->root.type != bfd_link_hash_defined
6761 && h->root.type != bfd_link_hash_defweak)
6764 eh = (struct ppc_link_hash_entry *) h;
6765 if (eh->adjust_done)
6768 sym_sec = eh->elf.root.u.def.section;
6769 opd = get_opd_info (sym_sec);
6770 if (opd != NULL && opd->adjust != NULL)
6772 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6775 /* This entry has been deleted. */
6776 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6779 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6780 if (elf_discarded_section (dsec))
6782 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6786 eh->elf.root.u.def.value = 0;
6787 eh->elf.root.u.def.section = dsec;
6790 eh->elf.root.u.def.value += adjust;
6791 eh->adjust_done = 1;
6796 /* Handles decrementing dynamic reloc counts for the reloc specified by
6797 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6798 have already been determined. */
6801 dec_dynrel_count (bfd_vma r_info,
6803 struct bfd_link_info *info,
6804 Elf_Internal_Sym **local_syms,
6805 struct elf_link_hash_entry *h,
6808 enum elf_ppc64_reloc_type r_type;
6809 struct ppc_dyn_relocs *p;
6810 struct ppc_dyn_relocs **pp;
6812 /* Can this reloc be dynamic? This switch, and later tests here
6813 should be kept in sync with the code in check_relocs. */
6814 r_type = ELF64_R_TYPE (r_info);
6820 case R_PPC64_TPREL16:
6821 case R_PPC64_TPREL16_LO:
6822 case R_PPC64_TPREL16_HI:
6823 case R_PPC64_TPREL16_HA:
6824 case R_PPC64_TPREL16_DS:
6825 case R_PPC64_TPREL16_LO_DS:
6826 case R_PPC64_TPREL16_HIGHER:
6827 case R_PPC64_TPREL16_HIGHERA:
6828 case R_PPC64_TPREL16_HIGHEST:
6829 case R_PPC64_TPREL16_HIGHESTA:
6833 case R_PPC64_TPREL64:
6834 case R_PPC64_DTPMOD64:
6835 case R_PPC64_DTPREL64:
6836 case R_PPC64_ADDR64:
6840 case R_PPC64_ADDR14:
6841 case R_PPC64_ADDR14_BRNTAKEN:
6842 case R_PPC64_ADDR14_BRTAKEN:
6843 case R_PPC64_ADDR16:
6844 case R_PPC64_ADDR16_DS:
6845 case R_PPC64_ADDR16_HA:
6846 case R_PPC64_ADDR16_HI:
6847 case R_PPC64_ADDR16_HIGHER:
6848 case R_PPC64_ADDR16_HIGHERA:
6849 case R_PPC64_ADDR16_HIGHEST:
6850 case R_PPC64_ADDR16_HIGHESTA:
6851 case R_PPC64_ADDR16_LO:
6852 case R_PPC64_ADDR16_LO_DS:
6853 case R_PPC64_ADDR24:
6854 case R_PPC64_ADDR32:
6855 case R_PPC64_UADDR16:
6856 case R_PPC64_UADDR32:
6857 case R_PPC64_UADDR64:
6862 if (local_syms != NULL)
6864 unsigned long r_symndx;
6865 Elf_Internal_Sym *sym;
6866 bfd *ibfd = sec->owner;
6868 r_symndx = ELF64_R_SYM (r_info);
6869 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6874 && (must_be_dyn_reloc (info, r_type)
6877 || h->root.type == bfd_link_hash_defweak
6878 || !h->def_regular))))
6879 || (ELIMINATE_COPY_RELOCS
6882 && (h->root.type == bfd_link_hash_defweak
6883 || !h->def_regular)))
6889 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6892 if (sym_sec != NULL)
6894 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6895 pp = (struct ppc_dyn_relocs **) vpp;
6899 void *vpp = &elf_section_data (sec)->local_dynrel;
6900 pp = (struct ppc_dyn_relocs **) vpp;
6903 /* elf_gc_sweep may have already removed all dyn relocs associated
6904 with local syms for a given section. Don't report a dynreloc
6910 while ((p = *pp) != NULL)
6914 if (!must_be_dyn_reloc (info, r_type))
6924 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6926 bfd_set_error (bfd_error_bad_value);
6930 /* Remove unused Official Procedure Descriptor entries. Currently we
6931 only remove those associated with functions in discarded link-once
6932 sections, or weakly defined functions that have been overridden. It
6933 would be possible to remove many more entries for statically linked
6937 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
6940 bfd_boolean some_edited = FALSE;
6941 asection *need_pad = NULL;
6943 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6946 Elf_Internal_Rela *relstart, *rel, *relend;
6947 Elf_Internal_Shdr *symtab_hdr;
6948 Elf_Internal_Sym *local_syms;
6950 struct _opd_sec_data *opd;
6951 bfd_boolean need_edit, add_aux_fields;
6952 bfd_size_type cnt_16b = 0;
6954 if (!is_ppc64_elf (ibfd))
6957 sec = bfd_get_section_by_name (ibfd, ".opd");
6958 if (sec == NULL || sec->size == 0)
6961 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6964 if (sec->output_section == bfd_abs_section_ptr)
6967 /* Look through the section relocs. */
6968 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6972 symtab_hdr = &elf_symtab_hdr (ibfd);
6974 /* Read the relocations. */
6975 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6977 if (relstart == NULL)
6980 /* First run through the relocs to check they are sane, and to
6981 determine whether we need to edit this opd section. */
6985 relend = relstart + sec->reloc_count;
6986 for (rel = relstart; rel < relend; )
6988 enum elf_ppc64_reloc_type r_type;
6989 unsigned long r_symndx;
6991 struct elf_link_hash_entry *h;
6992 Elf_Internal_Sym *sym;
6994 /* .opd contains a regular array of 16 or 24 byte entries. We're
6995 only interested in the reloc pointing to a function entry
6997 if (rel->r_offset != offset
6998 || rel + 1 >= relend
6999 || (rel + 1)->r_offset != offset + 8)
7001 /* If someone messes with .opd alignment then after a
7002 "ld -r" we might have padding in the middle of .opd.
7003 Also, there's nothing to prevent someone putting
7004 something silly in .opd with the assembler. No .opd
7005 optimization for them! */
7007 (*_bfd_error_handler)
7008 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7013 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7014 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7016 (*_bfd_error_handler)
7017 (_("%B: unexpected reloc type %u in .opd section"),
7023 r_symndx = ELF64_R_SYM (rel->r_info);
7024 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7028 if (sym_sec == NULL || sym_sec->owner == NULL)
7030 const char *sym_name;
7032 sym_name = h->root.root.string;
7034 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7037 (*_bfd_error_handler)
7038 (_("%B: undefined sym `%s' in .opd section"),
7044 /* opd entries are always for functions defined in the
7045 current input bfd. If the symbol isn't defined in the
7046 input bfd, then we won't be using the function in this
7047 bfd; It must be defined in a linkonce section in another
7048 bfd, or is weak. It's also possible that we are
7049 discarding the function due to a linker script /DISCARD/,
7050 which we test for via the output_section. */
7051 if (sym_sec->owner != ibfd
7052 || sym_sec->output_section == bfd_abs_section_ptr)
7057 || (rel + 1 == relend && rel->r_offset == offset + 16))
7059 if (sec->size == offset + 24)
7064 if (rel == relend && sec->size == offset + 16)
7072 if (rel->r_offset == offset + 24)
7074 else if (rel->r_offset != offset + 16)
7076 else if (rel + 1 < relend
7077 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7078 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7083 else if (rel + 2 < relend
7084 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7085 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7094 add_aux_fields = non_overlapping && cnt_16b > 0;
7096 if (need_edit || add_aux_fields)
7098 Elf_Internal_Rela *write_rel;
7099 Elf_Internal_Shdr *rel_hdr;
7100 bfd_byte *rptr, *wptr;
7101 bfd_byte *new_contents;
7106 new_contents = NULL;
7107 amt = sec->size * sizeof (long) / 8;
7108 opd = &ppc64_elf_section_data (sec)->u.opd;
7109 opd->adjust = bfd_zalloc (sec->owner, amt);
7110 if (opd->adjust == NULL)
7112 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7114 /* This seems a waste of time as input .opd sections are all
7115 zeros as generated by gcc, but I suppose there's no reason
7116 this will always be so. We might start putting something in
7117 the third word of .opd entries. */
7118 if ((sec->flags & SEC_IN_MEMORY) == 0)
7121 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7126 if (local_syms != NULL
7127 && symtab_hdr->contents != (unsigned char *) local_syms)
7129 if (elf_section_data (sec)->relocs != relstart)
7133 sec->contents = loc;
7134 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7137 elf_section_data (sec)->relocs = relstart;
7139 new_contents = sec->contents;
7142 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7143 if (new_contents == NULL)
7147 wptr = new_contents;
7148 rptr = sec->contents;
7150 write_rel = relstart;
7154 for (rel = relstart; rel < relend; rel++)
7156 unsigned long r_symndx;
7158 struct elf_link_hash_entry *h;
7159 Elf_Internal_Sym *sym;
7161 r_symndx = ELF64_R_SYM (rel->r_info);
7162 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7166 if (rel->r_offset == offset)
7168 struct ppc_link_hash_entry *fdh = NULL;
7170 /* See if the .opd entry is full 24 byte or
7171 16 byte (with fd_aux entry overlapped with next
7174 if ((rel + 2 == relend && sec->size == offset + 16)
7175 || (rel + 3 < relend
7176 && rel[2].r_offset == offset + 16
7177 && rel[3].r_offset == offset + 24
7178 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7179 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7183 && h->root.root.string[0] == '.')
7185 struct ppc_link_hash_table *htab;
7187 htab = ppc_hash_table (info);
7189 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7192 && fdh->elf.root.type != bfd_link_hash_defined
7193 && fdh->elf.root.type != bfd_link_hash_defweak)
7197 skip = (sym_sec->owner != ibfd
7198 || sym_sec->output_section == bfd_abs_section_ptr);
7201 if (fdh != NULL && sym_sec->owner == ibfd)
7203 /* Arrange for the function descriptor sym
7205 fdh->elf.root.u.def.value = 0;
7206 fdh->elf.root.u.def.section = sym_sec;
7208 opd->adjust[rel->r_offset / 8] = -1;
7212 /* We'll be keeping this opd entry. */
7216 /* Redefine the function descriptor symbol to
7217 this location in the opd section. It is
7218 necessary to update the value here rather
7219 than using an array of adjustments as we do
7220 for local symbols, because various places
7221 in the generic ELF code use the value
7222 stored in u.def.value. */
7223 fdh->elf.root.u.def.value = wptr - new_contents;
7224 fdh->adjust_done = 1;
7227 /* Local syms are a bit tricky. We could
7228 tweak them as they can be cached, but
7229 we'd need to look through the local syms
7230 for the function descriptor sym which we
7231 don't have at the moment. So keep an
7232 array of adjustments. */
7233 opd->adjust[rel->r_offset / 8]
7234 = (wptr - new_contents) - (rptr - sec->contents);
7237 memcpy (wptr, rptr, opd_ent_size);
7238 wptr += opd_ent_size;
7239 if (add_aux_fields && opd_ent_size == 16)
7241 memset (wptr, '\0', 8);
7245 rptr += opd_ent_size;
7246 offset += opd_ent_size;
7252 && !info->relocatable
7253 && !dec_dynrel_count (rel->r_info, sec, info,
7259 /* We need to adjust any reloc offsets to point to the
7260 new opd entries. While we're at it, we may as well
7261 remove redundant relocs. */
7262 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7263 if (write_rel != rel)
7264 memcpy (write_rel, rel, sizeof (*rel));
7269 sec->size = wptr - new_contents;
7270 sec->reloc_count = write_rel - relstart;
7273 free (sec->contents);
7274 sec->contents = new_contents;
7277 /* Fudge the header size too, as this is used later in
7278 elf_bfd_final_link if we are emitting relocs. */
7279 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7280 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7283 else if (elf_section_data (sec)->relocs != relstart)
7286 if (local_syms != NULL
7287 && symtab_hdr->contents != (unsigned char *) local_syms)
7289 if (!info->keep_memory)
7292 symtab_hdr->contents = (unsigned char *) local_syms;
7297 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7299 /* If we are doing a final link and the last .opd entry is just 16 byte
7300 long, add a 8 byte padding after it. */
7301 if (need_pad != NULL && !info->relocatable)
7305 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7307 BFD_ASSERT (need_pad->size > 0);
7309 p = bfd_malloc (need_pad->size + 8);
7313 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7314 p, 0, need_pad->size))
7317 need_pad->contents = p;
7318 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7322 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7326 need_pad->contents = p;
7329 memset (need_pad->contents + need_pad->size, 0, 8);
7330 need_pad->size += 8;
7336 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7339 ppc64_elf_tls_setup (struct bfd_link_info *info,
7340 int no_tls_get_addr_opt,
7343 struct ppc_link_hash_table *htab;
7345 htab = ppc_hash_table (info);
7350 htab->do_multi_toc = 0;
7351 else if (!htab->do_multi_toc)
7354 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7355 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7356 FALSE, FALSE, TRUE));
7357 /* Move dynamic linking info to the function descriptor sym. */
7358 if (htab->tls_get_addr != NULL)
7359 func_desc_adjust (&htab->tls_get_addr->elf, info);
7360 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7361 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7362 FALSE, FALSE, TRUE));
7363 if (!no_tls_get_addr_opt)
7365 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7367 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7368 FALSE, FALSE, TRUE);
7370 func_desc_adjust (opt, info);
7371 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7372 FALSE, FALSE, TRUE);
7374 && (opt_fd->root.type == bfd_link_hash_defined
7375 || opt_fd->root.type == bfd_link_hash_defweak))
7377 /* If glibc supports an optimized __tls_get_addr call stub,
7378 signalled by the presence of __tls_get_addr_opt, and we'll
7379 be calling __tls_get_addr via a plt call stub, then
7380 make __tls_get_addr point to __tls_get_addr_opt. */
7381 tga_fd = &htab->tls_get_addr_fd->elf;
7382 if (htab->elf.dynamic_sections_created
7384 && (tga_fd->type == STT_FUNC
7385 || tga_fd->needs_plt)
7386 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7387 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7388 && tga_fd->root.type == bfd_link_hash_undefweak)))
7390 struct plt_entry *ent;
7392 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7393 if (ent->plt.refcount > 0)
7397 tga_fd->root.type = bfd_link_hash_indirect;
7398 tga_fd->root.u.i.link = &opt_fd->root;
7399 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7400 if (opt_fd->dynindx != -1)
7402 /* Use __tls_get_addr_opt in dynamic relocations. */
7403 opt_fd->dynindx = -1;
7404 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7405 opt_fd->dynstr_index);
7406 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7409 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7410 tga = &htab->tls_get_addr->elf;
7411 if (opt != NULL && tga != NULL)
7413 tga->root.type = bfd_link_hash_indirect;
7414 tga->root.u.i.link = &opt->root;
7415 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7416 _bfd_elf_link_hash_hide_symbol (info, opt,
7418 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7420 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7421 htab->tls_get_addr_fd->is_func_descriptor = 1;
7422 if (htab->tls_get_addr != NULL)
7424 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7425 htab->tls_get_addr->is_func = 1;
7431 no_tls_get_addr_opt = TRUE;
7433 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7434 return _bfd_elf_tls_setup (info->output_bfd, info);
7437 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7441 branch_reloc_hash_match (const bfd *ibfd,
7442 const Elf_Internal_Rela *rel,
7443 const struct ppc_link_hash_entry *hash1,
7444 const struct ppc_link_hash_entry *hash2)
7446 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7447 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7448 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7450 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7452 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7453 struct elf_link_hash_entry *h;
7455 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7456 h = elf_follow_link (h);
7457 if (h == &hash1->elf || h == &hash2->elf)
7463 /* Run through all the TLS relocs looking for optimization
7464 opportunities. The linker has been hacked (see ppc64elf.em) to do
7465 a preliminary section layout so that we know the TLS segment
7466 offsets. We can't optimize earlier because some optimizations need
7467 to know the tp offset, and we need to optimize before allocating
7468 dynamic relocations. */
7471 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7475 struct ppc_link_hash_table *htab;
7476 unsigned char *toc_ref;
7479 if (info->relocatable || !info->executable)
7482 htab = ppc_hash_table (info);
7486 /* Make two passes over the relocs. On the first pass, mark toc
7487 entries involved with tls relocs, and check that tls relocs
7488 involved in setting up a tls_get_addr call are indeed followed by
7489 such a call. If they are not, we can't do any tls optimization.
7490 On the second pass twiddle tls_mask flags to notify
7491 relocate_section that optimization can be done, and adjust got
7492 and plt refcounts. */
7494 for (pass = 0; pass < 2; ++pass)
7495 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7497 Elf_Internal_Sym *locsyms = NULL;
7498 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7500 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7501 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7503 Elf_Internal_Rela *relstart, *rel, *relend;
7504 bfd_boolean found_tls_get_addr_arg = 0;
7506 /* Read the relocations. */
7507 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7509 if (relstart == NULL)
7512 relend = relstart + sec->reloc_count;
7513 for (rel = relstart; rel < relend; rel++)
7515 enum elf_ppc64_reloc_type r_type;
7516 unsigned long r_symndx;
7517 struct elf_link_hash_entry *h;
7518 Elf_Internal_Sym *sym;
7520 unsigned char *tls_mask;
7521 unsigned char tls_set, tls_clear, tls_type = 0;
7523 bfd_boolean ok_tprel, is_local;
7524 long toc_ref_index = 0;
7525 int expecting_tls_get_addr = 0;
7526 bfd_boolean ret = FALSE;
7528 r_symndx = ELF64_R_SYM (rel->r_info);
7529 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7533 if (elf_section_data (sec)->relocs != relstart)
7535 if (toc_ref != NULL)
7538 && (elf_symtab_hdr (ibfd).contents
7539 != (unsigned char *) locsyms))
7546 if (h->root.type == bfd_link_hash_defined
7547 || h->root.type == bfd_link_hash_defweak)
7548 value = h->root.u.def.value;
7549 else if (h->root.type == bfd_link_hash_undefweak)
7553 found_tls_get_addr_arg = 0;
7558 /* Symbols referenced by TLS relocs must be of type
7559 STT_TLS. So no need for .opd local sym adjust. */
7560 value = sym->st_value;
7569 && h->root.type == bfd_link_hash_undefweak)
7573 value += sym_sec->output_offset;
7574 value += sym_sec->output_section->vma;
7575 value -= htab->elf.tls_sec->vma;
7576 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7577 < (bfd_vma) 1 << 32);
7581 r_type = ELF64_R_TYPE (rel->r_info);
7582 /* If this section has old-style __tls_get_addr calls
7583 without marker relocs, then check that each
7584 __tls_get_addr call reloc is preceded by a reloc
7585 that conceivably belongs to the __tls_get_addr arg
7586 setup insn. If we don't find matching arg setup
7587 relocs, don't do any tls optimization. */
7589 && sec->has_tls_get_addr_call
7591 && (h == &htab->tls_get_addr->elf
7592 || h == &htab->tls_get_addr_fd->elf)
7593 && !found_tls_get_addr_arg
7594 && is_branch_reloc (r_type))
7596 info->callbacks->minfo (_("%C __tls_get_addr lost arg, "
7597 "TLS optimization disabled\n"),
7598 ibfd, sec, rel->r_offset);
7603 found_tls_get_addr_arg = 0;
7606 case R_PPC64_GOT_TLSLD16:
7607 case R_PPC64_GOT_TLSLD16_LO:
7608 expecting_tls_get_addr = 1;
7609 found_tls_get_addr_arg = 1;
7612 case R_PPC64_GOT_TLSLD16_HI:
7613 case R_PPC64_GOT_TLSLD16_HA:
7614 /* These relocs should never be against a symbol
7615 defined in a shared lib. Leave them alone if
7616 that turns out to be the case. */
7623 tls_type = TLS_TLS | TLS_LD;
7626 case R_PPC64_GOT_TLSGD16:
7627 case R_PPC64_GOT_TLSGD16_LO:
7628 expecting_tls_get_addr = 1;
7629 found_tls_get_addr_arg = 1;
7632 case R_PPC64_GOT_TLSGD16_HI:
7633 case R_PPC64_GOT_TLSGD16_HA:
7639 tls_set = TLS_TLS | TLS_TPRELGD;
7641 tls_type = TLS_TLS | TLS_GD;
7644 case R_PPC64_GOT_TPREL16_DS:
7645 case R_PPC64_GOT_TPREL16_LO_DS:
7646 case R_PPC64_GOT_TPREL16_HI:
7647 case R_PPC64_GOT_TPREL16_HA:
7652 tls_clear = TLS_TPREL;
7653 tls_type = TLS_TLS | TLS_TPREL;
7660 found_tls_get_addr_arg = 1;
7665 case R_PPC64_TOC16_LO:
7666 if (sym_sec == NULL || sym_sec != toc)
7669 /* Mark this toc entry as referenced by a TLS
7670 code sequence. We can do that now in the
7671 case of R_PPC64_TLS, and after checking for
7672 tls_get_addr for the TOC16 relocs. */
7673 if (toc_ref == NULL)
7674 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7675 if (toc_ref == NULL)
7679 value = h->root.u.def.value;
7681 value = sym->st_value;
7682 value += rel->r_addend;
7683 BFD_ASSERT (value < toc->size && value % 8 == 0);
7684 toc_ref_index = (value + toc->output_offset) / 8;
7685 if (r_type == R_PPC64_TLS
7686 || r_type == R_PPC64_TLSGD
7687 || r_type == R_PPC64_TLSLD)
7689 toc_ref[toc_ref_index] = 1;
7693 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7698 expecting_tls_get_addr = 2;
7701 case R_PPC64_TPREL64:
7705 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7710 tls_set = TLS_EXPLICIT;
7711 tls_clear = TLS_TPREL;
7716 case R_PPC64_DTPMOD64:
7720 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7722 if (rel + 1 < relend
7724 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7725 && rel[1].r_offset == rel->r_offset + 8)
7729 tls_set = TLS_EXPLICIT | TLS_GD;
7732 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7741 tls_set = TLS_EXPLICIT;
7752 if (!expecting_tls_get_addr
7753 || !sec->has_tls_get_addr_call)
7756 if (rel + 1 < relend
7757 && branch_reloc_hash_match (ibfd, rel + 1,
7759 htab->tls_get_addr_fd))
7761 if (expecting_tls_get_addr == 2)
7763 /* Check for toc tls entries. */
7764 unsigned char *toc_tls;
7767 retval = get_tls_mask (&toc_tls, NULL, NULL,
7772 if (toc_tls != NULL)
7774 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7775 found_tls_get_addr_arg = 1;
7777 toc_ref[toc_ref_index] = 1;
7783 if (expecting_tls_get_addr != 1)
7786 /* Uh oh, we didn't find the expected call. We
7787 could just mark this symbol to exclude it
7788 from tls optimization but it's safer to skip
7789 the entire optimization. */
7790 info->callbacks->minfo (_("%C arg lost __tls_get_addr, "
7791 "TLS optimization disabled\n"),
7792 ibfd, sec, rel->r_offset);
7797 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7799 struct plt_entry *ent;
7800 for (ent = htab->tls_get_addr->elf.plt.plist;
7803 if (ent->addend == 0)
7805 if (ent->plt.refcount > 0)
7807 ent->plt.refcount -= 1;
7808 expecting_tls_get_addr = 0;
7814 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7816 struct plt_entry *ent;
7817 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7820 if (ent->addend == 0)
7822 if (ent->plt.refcount > 0)
7823 ent->plt.refcount -= 1;
7831 if ((tls_set & TLS_EXPLICIT) == 0)
7833 struct got_entry *ent;
7835 /* Adjust got entry for this reloc. */
7839 ent = elf_local_got_ents (ibfd)[r_symndx];
7841 for (; ent != NULL; ent = ent->next)
7842 if (ent->addend == rel->r_addend
7843 && ent->owner == ibfd
7844 && ent->tls_type == tls_type)
7851 /* We managed to get rid of a got entry. */
7852 if (ent->got.refcount > 0)
7853 ent->got.refcount -= 1;
7858 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7859 we'll lose one or two dyn relocs. */
7860 if (!dec_dynrel_count (rel->r_info, sec, info,
7864 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7866 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7872 *tls_mask |= tls_set;
7873 *tls_mask &= ~tls_clear;
7876 if (elf_section_data (sec)->relocs != relstart)
7881 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7883 if (!info->keep_memory)
7886 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7890 if (toc_ref != NULL)
7895 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7896 the values of any global symbols in a toc section that has been
7897 edited. Globals in toc sections should be a rarity, so this function
7898 sets a flag if any are found in toc sections other than the one just
7899 edited, so that futher hash table traversals can be avoided. */
7901 struct adjust_toc_info
7904 unsigned long *skip;
7905 bfd_boolean global_toc_syms;
7908 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
7911 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7913 struct ppc_link_hash_entry *eh;
7914 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7917 if (h->root.type == bfd_link_hash_indirect)
7920 if (h->root.type == bfd_link_hash_warning)
7921 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7923 if (h->root.type != bfd_link_hash_defined
7924 && h->root.type != bfd_link_hash_defweak)
7927 eh = (struct ppc_link_hash_entry *) h;
7928 if (eh->adjust_done)
7931 if (eh->elf.root.u.def.section == toc_inf->toc)
7933 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
7934 i = toc_inf->toc->rawsize >> 3;
7936 i = eh->elf.root.u.def.value >> 3;
7938 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
7940 (*_bfd_error_handler)
7941 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
7944 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
7945 eh->elf.root.u.def.value = (bfd_vma) i << 3;
7948 eh->elf.root.u.def.value -= toc_inf->skip[i];
7949 eh->adjust_done = 1;
7951 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7952 toc_inf->global_toc_syms = TRUE;
7957 /* Examine all relocs referencing .toc sections in order to remove
7958 unused .toc entries. */
7961 ppc64_elf_edit_toc (struct bfd_link_info *info)
7964 struct adjust_toc_info toc_inf;
7965 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7967 htab->do_toc_opt = 1;
7968 toc_inf.global_toc_syms = TRUE;
7969 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7971 asection *toc, *sec;
7972 Elf_Internal_Shdr *symtab_hdr;
7973 Elf_Internal_Sym *local_syms;
7974 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
7975 unsigned long *skip, *drop;
7976 unsigned char *used;
7977 unsigned char *keep, last, some_unused;
7979 if (!is_ppc64_elf (ibfd))
7982 toc = bfd_get_section_by_name (ibfd, ".toc");
7985 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7986 || elf_discarded_section (toc))
7991 symtab_hdr = &elf_symtab_hdr (ibfd);
7993 /* Look at sections dropped from the final link. */
7996 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7998 if (sec->reloc_count == 0
7999 || !elf_discarded_section (sec)
8000 || get_opd_info (sec)
8001 || (sec->flags & SEC_ALLOC) == 0
8002 || (sec->flags & SEC_DEBUGGING) != 0)
8005 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8006 if (relstart == NULL)
8009 /* Run through the relocs to see which toc entries might be
8011 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8013 enum elf_ppc64_reloc_type r_type;
8014 unsigned long r_symndx;
8016 struct elf_link_hash_entry *h;
8017 Elf_Internal_Sym *sym;
8020 r_type = ELF64_R_TYPE (rel->r_info);
8027 case R_PPC64_TOC16_LO:
8028 case R_PPC64_TOC16_HI:
8029 case R_PPC64_TOC16_HA:
8030 case R_PPC64_TOC16_DS:
8031 case R_PPC64_TOC16_LO_DS:
8035 r_symndx = ELF64_R_SYM (rel->r_info);
8036 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8044 val = h->root.u.def.value;
8046 val = sym->st_value;
8047 val += rel->r_addend;
8049 if (val >= toc->size)
8052 /* Anything in the toc ought to be aligned to 8 bytes.
8053 If not, don't mark as unused. */
8059 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8064 skip[val >> 3] = ref_from_discarded;
8067 if (elf_section_data (sec)->relocs != relstart)
8071 /* For largetoc loads of address constants, we can convert
8072 . addis rx,2,addr@got@ha
8073 . ld ry,addr@got@l(rx)
8075 . addis rx,2,addr@toc@ha
8076 . addi ry,rx,addr@toc@l
8077 when addr is within 2G of the toc pointer. This then means
8078 that the word storing "addr" in the toc is no longer needed. */
8080 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8081 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8082 && toc->reloc_count != 0)
8084 /* Read toc relocs. */
8085 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8087 if (toc_relocs == NULL)
8090 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8092 enum elf_ppc64_reloc_type r_type;
8093 unsigned long r_symndx;
8095 struct elf_link_hash_entry *h;
8096 Elf_Internal_Sym *sym;
8099 r_type = ELF64_R_TYPE (rel->r_info);
8100 if (r_type != R_PPC64_ADDR64)
8103 r_symndx = ELF64_R_SYM (rel->r_info);
8104 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8109 || elf_discarded_section (sym_sec))
8112 if (!SYMBOL_CALLS_LOCAL (info, h))
8117 if (h->type == STT_GNU_IFUNC)
8119 val = h->root.u.def.value;
8123 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8125 val = sym->st_value;
8127 val += rel->r_addend;
8128 val += sym_sec->output_section->vma + sym_sec->output_offset;
8130 /* We don't yet know the exact toc pointer value, but we
8131 know it will be somewhere in the toc section. Don't
8132 optimize if the difference from any possible toc
8133 pointer is outside [ff..f80008000, 7fff7fff]. */
8134 addr = toc->output_section->vma + TOC_BASE_OFF;
8135 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8138 addr = toc->output_section->vma + toc->output_section->rawsize;
8139 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8144 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8149 skip[rel->r_offset >> 3]
8150 |= can_optimize | ((rel - toc_relocs) << 2);
8157 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8161 if (local_syms != NULL
8162 && symtab_hdr->contents != (unsigned char *) local_syms)
8166 && elf_section_data (sec)->relocs != relstart)
8168 if (toc_relocs != NULL
8169 && elf_section_data (toc)->relocs != toc_relocs)
8176 /* Now check all kept sections that might reference the toc.
8177 Check the toc itself last. */
8178 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8181 sec = (sec == toc ? NULL
8182 : sec->next == NULL ? toc
8183 : sec->next == toc && toc->next ? toc->next
8188 if (sec->reloc_count == 0
8189 || elf_discarded_section (sec)
8190 || get_opd_info (sec)
8191 || (sec->flags & SEC_ALLOC) == 0
8192 || (sec->flags & SEC_DEBUGGING) != 0)
8195 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8197 if (relstart == NULL)
8200 /* Mark toc entries referenced as used. */
8203 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8205 enum elf_ppc64_reloc_type r_type;
8206 unsigned long r_symndx;
8208 struct elf_link_hash_entry *h;
8209 Elf_Internal_Sym *sym;
8212 r_type = ELF64_R_TYPE (rel->r_info);
8216 case R_PPC64_TOC16_LO:
8217 case R_PPC64_TOC16_HI:
8218 case R_PPC64_TOC16_HA:
8219 case R_PPC64_TOC16_DS:
8220 case R_PPC64_TOC16_LO_DS:
8221 /* In case we're taking addresses of toc entries. */
8222 case R_PPC64_ADDR64:
8229 r_symndx = ELF64_R_SYM (rel->r_info);
8230 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8241 val = h->root.u.def.value;
8243 val = sym->st_value;
8244 val += rel->r_addend;
8246 if (val >= toc->size)
8249 if ((skip[val >> 3] & can_optimize) != 0)
8256 case R_PPC64_TOC16_HA:
8259 case R_PPC64_TOC16_LO_DS:
8260 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8261 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
8263 if ((opc & (0x3f << 2)) == (58u << 2))
8268 /* Wrong sort of reloc, or not a ld. We may
8269 as well clear ref_from_discarded too. */
8274 /* For the toc section, we only mark as used if
8275 this entry itself isn't unused. */
8278 && (used[rel->r_offset >> 3]
8279 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
8280 /* Do all the relocs again, to catch reference
8288 if (elf_section_data (sec)->relocs != relstart)
8292 /* Merge the used and skip arrays. Assume that TOC
8293 doublewords not appearing as either used or unused belong
8294 to to an entry more than one doubleword in size. */
8295 for (drop = skip, keep = used, last = 0, some_unused = 0;
8296 drop < skip + (toc->size + 7) / 8;
8301 *drop &= ~ref_from_discarded;
8302 if ((*drop & can_optimize) != 0)
8309 last = ref_from_discarded;
8319 bfd_byte *contents, *src;
8321 Elf_Internal_Sym *sym;
8322 bfd_boolean local_toc_syms = FALSE;
8324 /* Shuffle the toc contents, and at the same time convert the
8325 skip array from booleans into offsets. */
8326 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8329 elf_section_data (toc)->this_hdr.contents = contents;
8331 for (src = contents, off = 0, drop = skip;
8332 src < contents + toc->size;
8335 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8340 memcpy (src - off, src, 8);
8344 toc->rawsize = toc->size;
8345 toc->size = src - contents - off;
8347 /* Adjust addends for relocs against the toc section sym,
8348 and optimize any accesses we can. */
8349 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8351 if (sec->reloc_count == 0
8352 || elf_discarded_section (sec))
8355 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8357 if (relstart == NULL)
8360 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8362 enum elf_ppc64_reloc_type r_type;
8363 unsigned long r_symndx;
8365 struct elf_link_hash_entry *h;
8368 r_type = ELF64_R_TYPE (rel->r_info);
8375 case R_PPC64_TOC16_LO:
8376 case R_PPC64_TOC16_HI:
8377 case R_PPC64_TOC16_HA:
8378 case R_PPC64_TOC16_DS:
8379 case R_PPC64_TOC16_LO_DS:
8380 case R_PPC64_ADDR64:
8384 r_symndx = ELF64_R_SYM (rel->r_info);
8385 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8393 val = h->root.u.def.value;
8396 val = sym->st_value;
8398 local_toc_syms = TRUE;
8401 val += rel->r_addend;
8403 if (val > toc->rawsize)
8405 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8407 else if ((skip[val >> 3] & can_optimize) != 0)
8409 Elf_Internal_Rela *tocrel
8410 = toc_relocs + (skip[val >> 3] >> 2);
8411 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8415 case R_PPC64_TOC16_HA:
8416 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8419 case R_PPC64_TOC16_LO_DS:
8420 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8426 rel->r_addend = tocrel->r_addend;
8427 elf_section_data (sec)->relocs = relstart;
8431 if (h != NULL || sym->st_value != 0)
8434 rel->r_addend -= skip[val >> 3];
8435 elf_section_data (sec)->relocs = relstart;
8438 if (elf_section_data (sec)->relocs != relstart)
8442 /* We shouldn't have local or global symbols defined in the TOC,
8443 but handle them anyway. */
8444 if (local_syms != NULL)
8445 for (sym = local_syms;
8446 sym < local_syms + symtab_hdr->sh_info;
8448 if (sym->st_value != 0
8449 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8453 if (sym->st_value > toc->rawsize)
8454 i = toc->rawsize >> 3;
8456 i = sym->st_value >> 3;
8458 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8461 (*_bfd_error_handler)
8462 (_("%s defined on removed toc entry"),
8463 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8466 while ((skip[i] & (ref_from_discarded | can_optimize)));
8467 sym->st_value = (bfd_vma) i << 3;
8470 sym->st_value -= skip[i];
8471 symtab_hdr->contents = (unsigned char *) local_syms;
8474 /* Adjust any global syms defined in this toc input section. */
8475 if (toc_inf.global_toc_syms)
8478 toc_inf.skip = skip;
8479 toc_inf.global_toc_syms = FALSE;
8480 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8484 if (toc->reloc_count != 0)
8486 Elf_Internal_Shdr *rel_hdr;
8487 Elf_Internal_Rela *wrel;
8490 /* Remove unused toc relocs, and adjust those we keep. */
8491 if (toc_relocs == NULL)
8492 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8494 if (toc_relocs == NULL)
8498 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8499 if ((skip[rel->r_offset >> 3]
8500 & (ref_from_discarded | can_optimize)) == 0)
8502 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8503 wrel->r_info = rel->r_info;
8504 wrel->r_addend = rel->r_addend;
8507 else if (!dec_dynrel_count (rel->r_info, toc, info,
8508 &local_syms, NULL, NULL))
8511 elf_section_data (toc)->relocs = toc_relocs;
8512 toc->reloc_count = wrel - toc_relocs;
8513 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8514 sz = rel_hdr->sh_entsize;
8515 rel_hdr->sh_size = toc->reloc_count * sz;
8518 else if (toc_relocs != NULL
8519 && elf_section_data (toc)->relocs != toc_relocs)
8522 if (local_syms != NULL
8523 && symtab_hdr->contents != (unsigned char *) local_syms)
8525 if (!info->keep_memory)
8528 symtab_hdr->contents = (unsigned char *) local_syms;
8536 /* Return true iff input section I references the TOC using
8537 instructions limited to +/-32k offsets. */
8540 ppc64_elf_has_small_toc_reloc (asection *i)
8542 return (is_ppc64_elf (i->owner)
8543 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8546 /* Allocate space for one GOT entry. */
8549 allocate_got (struct elf_link_hash_entry *h,
8550 struct bfd_link_info *info,
8551 struct got_entry *gent)
8553 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8555 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8556 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8558 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8559 ? 2 : 1) * sizeof (Elf64_External_Rela);
8560 asection *got = ppc64_elf_tdata (gent->owner)->got;
8562 gent->got.offset = got->size;
8563 got->size += entsize;
8565 dyn = htab->elf.dynamic_sections_created;
8567 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8568 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8569 || h->root.type != bfd_link_hash_undefweak))
8571 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8572 relgot->size += rentsize;
8574 else if (h->type == STT_GNU_IFUNC)
8576 asection *relgot = htab->reliplt;
8577 relgot->size += rentsize;
8578 htab->got_reli_size += rentsize;
8582 /* This function merges got entries in the same toc group. */
8585 merge_got_entries (struct got_entry **pent)
8587 struct got_entry *ent, *ent2;
8589 for (ent = *pent; ent != NULL; ent = ent->next)
8590 if (!ent->is_indirect)
8591 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8592 if (!ent2->is_indirect
8593 && ent2->addend == ent->addend
8594 && ent2->tls_type == ent->tls_type
8595 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8597 ent2->is_indirect = TRUE;
8598 ent2->got.ent = ent;
8602 /* Allocate space in .plt, .got and associated reloc sections for
8606 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8608 struct bfd_link_info *info;
8609 struct ppc_link_hash_table *htab;
8611 struct ppc_link_hash_entry *eh;
8612 struct ppc_dyn_relocs *p;
8613 struct got_entry **pgent, *gent;
8615 if (h->root.type == bfd_link_hash_indirect)
8618 if (h->root.type == bfd_link_hash_warning)
8619 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8621 info = (struct bfd_link_info *) inf;
8622 htab = ppc_hash_table (info);
8626 if ((htab->elf.dynamic_sections_created
8628 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8629 || h->type == STT_GNU_IFUNC)
8631 struct plt_entry *pent;
8632 bfd_boolean doneone = FALSE;
8633 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8634 if (pent->plt.refcount > 0)
8636 if (!htab->elf.dynamic_sections_created
8637 || h->dynindx == -1)
8640 pent->plt.offset = s->size;
8641 s->size += PLT_ENTRY_SIZE;
8646 /* If this is the first .plt entry, make room for the special
8650 s->size += PLT_INITIAL_ENTRY_SIZE;
8652 pent->plt.offset = s->size;
8654 /* Make room for this entry. */
8655 s->size += PLT_ENTRY_SIZE;
8657 /* Make room for the .glink code. */
8660 s->size += GLINK_CALL_STUB_SIZE;
8661 /* We need bigger stubs past index 32767. */
8662 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8666 /* We also need to make an entry in the .rela.plt section. */
8669 s->size += sizeof (Elf64_External_Rela);
8673 pent->plt.offset = (bfd_vma) -1;
8676 h->plt.plist = NULL;
8682 h->plt.plist = NULL;
8686 eh = (struct ppc_link_hash_entry *) h;
8687 /* Run through the TLS GD got entries first if we're changing them
8689 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8690 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8691 if (gent->got.refcount > 0
8692 && (gent->tls_type & TLS_GD) != 0)
8694 /* This was a GD entry that has been converted to TPREL. If
8695 there happens to be a TPREL entry we can use that one. */
8696 struct got_entry *ent;
8697 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8698 if (ent->got.refcount > 0
8699 && (ent->tls_type & TLS_TPREL) != 0
8700 && ent->addend == gent->addend
8701 && ent->owner == gent->owner)
8703 gent->got.refcount = 0;
8707 /* If not, then we'll be using our own TPREL entry. */
8708 if (gent->got.refcount != 0)
8709 gent->tls_type = TLS_TLS | TLS_TPREL;
8712 /* Remove any list entry that won't generate a word in the GOT before
8713 we call merge_got_entries. Otherwise we risk merging to empty
8715 pgent = &h->got.glist;
8716 while ((gent = *pgent) != NULL)
8717 if (gent->got.refcount > 0)
8719 if ((gent->tls_type & TLS_LD) != 0
8722 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8723 *pgent = gent->next;
8726 pgent = &gent->next;
8729 *pgent = gent->next;
8731 if (!htab->do_multi_toc)
8732 merge_got_entries (&h->got.glist);
8734 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8735 if (!gent->is_indirect)
8737 /* Make sure this symbol is output as a dynamic symbol.
8738 Undefined weak syms won't yet be marked as dynamic,
8739 nor will all TLS symbols. */
8740 if (h->dynindx == -1
8742 && h->type != STT_GNU_IFUNC
8743 && htab->elf.dynamic_sections_created)
8745 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8749 if (!is_ppc64_elf (gent->owner))
8752 allocate_got (h, info, gent);
8755 if (eh->dyn_relocs == NULL
8756 || (!htab->elf.dynamic_sections_created
8757 && h->type != STT_GNU_IFUNC))
8760 /* In the shared -Bsymbolic case, discard space allocated for
8761 dynamic pc-relative relocs against symbols which turn out to be
8762 defined in regular objects. For the normal shared case, discard
8763 space for relocs that have become local due to symbol visibility
8768 /* Relocs that use pc_count are those that appear on a call insn,
8769 or certain REL relocs (see must_be_dyn_reloc) that can be
8770 generated via assembly. We want calls to protected symbols to
8771 resolve directly to the function rather than going via the plt.
8772 If people want function pointer comparisons to work as expected
8773 then they should avoid writing weird assembly. */
8774 if (SYMBOL_CALLS_LOCAL (info, h))
8776 struct ppc_dyn_relocs **pp;
8778 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8780 p->count -= p->pc_count;
8789 /* Also discard relocs on undefined weak syms with non-default
8791 if (eh->dyn_relocs != NULL
8792 && h->root.type == bfd_link_hash_undefweak)
8794 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8795 eh->dyn_relocs = NULL;
8797 /* Make sure this symbol is output as a dynamic symbol.
8798 Undefined weak syms won't yet be marked as dynamic. */
8799 else if (h->dynindx == -1
8800 && !h->forced_local)
8802 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8807 else if (h->type == STT_GNU_IFUNC)
8809 if (!h->non_got_ref)
8810 eh->dyn_relocs = NULL;
8812 else if (ELIMINATE_COPY_RELOCS)
8814 /* For the non-shared case, discard space for relocs against
8815 symbols which turn out to need copy relocs or are not
8821 /* Make sure this symbol is output as a dynamic symbol.
8822 Undefined weak syms won't yet be marked as dynamic. */
8823 if (h->dynindx == -1
8824 && !h->forced_local)
8826 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8830 /* If that succeeded, we know we'll be keeping all the
8832 if (h->dynindx != -1)
8836 eh->dyn_relocs = NULL;
8841 /* Finally, allocate space. */
8842 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8844 asection *sreloc = elf_section_data (p->sec)->sreloc;
8845 if (!htab->elf.dynamic_sections_created)
8846 sreloc = htab->reliplt;
8847 sreloc->size += p->count * sizeof (Elf64_External_Rela);
8853 /* Find any dynamic relocs that apply to read-only sections. */
8856 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8858 struct ppc_link_hash_entry *eh;
8859 struct ppc_dyn_relocs *p;
8861 if (h->root.type == bfd_link_hash_warning)
8862 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8864 eh = (struct ppc_link_hash_entry *) h;
8865 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8867 asection *s = p->sec->output_section;
8869 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8871 struct bfd_link_info *info = inf;
8873 info->flags |= DF_TEXTREL;
8875 /* Not an error, just cut short the traversal. */
8882 /* Set the sizes of the dynamic sections. */
8885 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8886 struct bfd_link_info *info)
8888 struct ppc_link_hash_table *htab;
8893 struct got_entry *first_tlsld;
8895 htab = ppc_hash_table (info);
8899 dynobj = htab->elf.dynobj;
8903 if (htab->elf.dynamic_sections_created)
8905 /* Set the contents of the .interp section to the interpreter. */
8906 if (info->executable)
8908 s = bfd_get_section_by_name (dynobj, ".interp");
8911 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8912 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8916 /* Set up .got offsets for local syms, and space for local dynamic
8918 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8920 struct got_entry **lgot_ents;
8921 struct got_entry **end_lgot_ents;
8922 struct plt_entry **local_plt;
8923 struct plt_entry **end_local_plt;
8924 unsigned char *lgot_masks;
8925 bfd_size_type locsymcount;
8926 Elf_Internal_Shdr *symtab_hdr;
8929 if (!is_ppc64_elf (ibfd))
8932 for (s = ibfd->sections; s != NULL; s = s->next)
8934 struct ppc_dyn_relocs *p;
8936 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8938 if (!bfd_is_abs_section (p->sec)
8939 && bfd_is_abs_section (p->sec->output_section))
8941 /* Input section has been discarded, either because
8942 it is a copy of a linkonce section or due to
8943 linker script /DISCARD/, so we'll be discarding
8946 else if (p->count != 0)
8948 srel = elf_section_data (p->sec)->sreloc;
8949 if (!htab->elf.dynamic_sections_created)
8950 srel = htab->reliplt;
8951 srel->size += p->count * sizeof (Elf64_External_Rela);
8952 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8953 info->flags |= DF_TEXTREL;
8958 lgot_ents = elf_local_got_ents (ibfd);
8962 symtab_hdr = &elf_symtab_hdr (ibfd);
8963 locsymcount = symtab_hdr->sh_info;
8964 end_lgot_ents = lgot_ents + locsymcount;
8965 local_plt = (struct plt_entry **) end_lgot_ents;
8966 end_local_plt = local_plt + locsymcount;
8967 lgot_masks = (unsigned char *) end_local_plt;
8968 s = ppc64_elf_tdata (ibfd)->got;
8969 srel = ppc64_elf_tdata (ibfd)->relgot;
8970 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
8972 struct got_entry **pent, *ent;
8975 while ((ent = *pent) != NULL)
8976 if (ent->got.refcount > 0)
8978 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
8980 ppc64_tlsld_got (ibfd)->got.refcount += 1;
8985 unsigned int num = 1;
8986 ent->got.offset = s->size;
8987 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
8991 srel->size += num * sizeof (Elf64_External_Rela);
8992 else if ((*lgot_masks & PLT_IFUNC) != 0)
8995 += num * sizeof (Elf64_External_Rela);
8997 += num * sizeof (Elf64_External_Rela);
9006 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9007 for (; local_plt < end_local_plt; ++local_plt)
9009 struct plt_entry *ent;
9011 for (ent = *local_plt; ent != NULL; ent = ent->next)
9012 if (ent->plt.refcount > 0)
9015 ent->plt.offset = s->size;
9016 s->size += PLT_ENTRY_SIZE;
9018 htab->reliplt->size += sizeof (Elf64_External_Rela);
9021 ent->plt.offset = (bfd_vma) -1;
9025 /* Allocate global sym .plt and .got entries, and space for global
9026 sym dynamic relocs. */
9027 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9030 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9032 struct got_entry *ent;
9034 if (!is_ppc64_elf (ibfd))
9037 ent = ppc64_tlsld_got (ibfd);
9038 if (ent->got.refcount > 0)
9040 if (!htab->do_multi_toc && first_tlsld != NULL)
9042 ent->is_indirect = TRUE;
9043 ent->got.ent = first_tlsld;
9047 if (first_tlsld == NULL)
9049 s = ppc64_elf_tdata (ibfd)->got;
9050 ent->got.offset = s->size;
9055 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9056 srel->size += sizeof (Elf64_External_Rela);
9061 ent->got.offset = (bfd_vma) -1;
9064 /* We now have determined the sizes of the various dynamic sections.
9065 Allocate memory for them. */
9067 for (s = dynobj->sections; s != NULL; s = s->next)
9069 if ((s->flags & SEC_LINKER_CREATED) == 0)
9072 if (s == htab->brlt || s == htab->relbrlt)
9073 /* These haven't been allocated yet; don't strip. */
9075 else if (s == htab->got
9079 || s == htab->dynbss)
9081 /* Strip this section if we don't need it; see the
9084 else if (CONST_STRNEQ (s->name, ".rela"))
9088 if (s != htab->relplt)
9091 /* We use the reloc_count field as a counter if we need
9092 to copy relocs into the output file. */
9098 /* It's not one of our sections, so don't allocate space. */
9104 /* If we don't need this section, strip it from the
9105 output file. This is mostly to handle .rela.bss and
9106 .rela.plt. We must create both sections in
9107 create_dynamic_sections, because they must be created
9108 before the linker maps input sections to output
9109 sections. The linker does that before
9110 adjust_dynamic_symbol is called, and it is that
9111 function which decides whether anything needs to go
9112 into these sections. */
9113 s->flags |= SEC_EXCLUDE;
9117 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9120 /* Allocate memory for the section contents. We use bfd_zalloc
9121 here in case unused entries are not reclaimed before the
9122 section's contents are written out. This should not happen,
9123 but this way if it does we get a R_PPC64_NONE reloc in .rela
9124 sections instead of garbage.
9125 We also rely on the section contents being zero when writing
9127 s->contents = bfd_zalloc (dynobj, s->size);
9128 if (s->contents == NULL)
9132 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9134 if (!is_ppc64_elf (ibfd))
9137 s = ppc64_elf_tdata (ibfd)->got;
9138 if (s != NULL && s != htab->got)
9141 s->flags |= SEC_EXCLUDE;
9144 s->contents = bfd_zalloc (ibfd, s->size);
9145 if (s->contents == NULL)
9149 s = ppc64_elf_tdata (ibfd)->relgot;
9153 s->flags |= SEC_EXCLUDE;
9156 s->contents = bfd_zalloc (ibfd, s->size);
9157 if (s->contents == NULL)
9165 if (htab->elf.dynamic_sections_created)
9167 /* Add some entries to the .dynamic section. We fill in the
9168 values later, in ppc64_elf_finish_dynamic_sections, but we
9169 must add the entries now so that we get the correct size for
9170 the .dynamic section. The DT_DEBUG entry is filled in by the
9171 dynamic linker and used by the debugger. */
9172 #define add_dynamic_entry(TAG, VAL) \
9173 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9175 if (info->executable)
9177 if (!add_dynamic_entry (DT_DEBUG, 0))
9181 if (htab->plt != NULL && htab->plt->size != 0)
9183 if (!add_dynamic_entry (DT_PLTGOT, 0)
9184 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9185 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9186 || !add_dynamic_entry (DT_JMPREL, 0)
9187 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9193 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9194 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9198 if (!htab->no_tls_get_addr_opt
9199 && htab->tls_get_addr_fd != NULL
9200 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9201 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9206 if (!add_dynamic_entry (DT_RELA, 0)
9207 || !add_dynamic_entry (DT_RELASZ, 0)
9208 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9211 /* If any dynamic relocs apply to a read-only section,
9212 then we need a DT_TEXTREL entry. */
9213 if ((info->flags & DF_TEXTREL) == 0)
9214 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9216 if ((info->flags & DF_TEXTREL) != 0)
9218 if (!add_dynamic_entry (DT_TEXTREL, 0))
9223 #undef add_dynamic_entry
9228 /* Determine the type of stub needed, if any, for a call. */
9230 static inline enum ppc_stub_type
9231 ppc_type_of_stub (asection *input_sec,
9232 const Elf_Internal_Rela *rel,
9233 struct ppc_link_hash_entry **hash,
9234 struct plt_entry **plt_ent,
9235 bfd_vma destination)
9237 struct ppc_link_hash_entry *h = *hash;
9239 bfd_vma branch_offset;
9240 bfd_vma max_branch_offset;
9241 enum elf_ppc64_reloc_type r_type;
9245 struct plt_entry *ent;
9246 struct ppc_link_hash_entry *fdh = h;
9248 && h->oh->is_func_descriptor)
9250 fdh = ppc_follow_link (h->oh);
9254 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9255 if (ent->addend == rel->r_addend
9256 && ent->plt.offset != (bfd_vma) -1)
9259 return ppc_stub_plt_call;
9262 /* Here, we know we don't have a plt entry. If we don't have a
9263 either a defined function descriptor or a defined entry symbol
9264 in a regular object file, then it is pointless trying to make
9265 any other type of stub. */
9266 if (!is_static_defined (&fdh->elf)
9267 && !is_static_defined (&h->elf))
9268 return ppc_stub_none;
9270 else if (elf_local_got_ents (input_sec->owner) != NULL)
9272 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9273 struct plt_entry **local_plt = (struct plt_entry **)
9274 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9275 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9277 if (local_plt[r_symndx] != NULL)
9279 struct plt_entry *ent;
9281 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9282 if (ent->addend == rel->r_addend
9283 && ent->plt.offset != (bfd_vma) -1)
9286 return ppc_stub_plt_call;
9291 /* Determine where the call point is. */
9292 location = (input_sec->output_offset
9293 + input_sec->output_section->vma
9296 branch_offset = destination - location;
9297 r_type = ELF64_R_TYPE (rel->r_info);
9299 /* Determine if a long branch stub is needed. */
9300 max_branch_offset = 1 << 25;
9301 if (r_type != R_PPC64_REL24)
9302 max_branch_offset = 1 << 15;
9304 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9305 /* We need a stub. Figure out whether a long_branch or plt_branch
9307 return ppc_stub_long_branch;
9309 return ppc_stub_none;
9312 /* Build a .plt call stub. */
9314 static inline bfd_byte *
9315 build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
9317 #define PPC_LO(v) ((v) & 0xffff)
9318 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9319 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9321 if (PPC_HA (offset) != 0)
9325 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9326 r[1].r_offset = r[0].r_offset + 8;
9327 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9328 r[1].r_addend = r[0].r_addend;
9329 if (PPC_HA (offset + 16) != PPC_HA (offset))
9331 r[2].r_offset = r[1].r_offset + 4;
9332 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9333 r[2].r_addend = r[0].r_addend;
9337 r[2].r_offset = r[1].r_offset + 8;
9338 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9339 r[2].r_addend = r[0].r_addend + 8;
9340 r[3].r_offset = r[2].r_offset + 4;
9341 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9342 r[3].r_addend = r[0].r_addend + 16;
9345 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9346 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9347 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9348 if (PPC_HA (offset + 16) != PPC_HA (offset))
9350 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9353 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9354 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9355 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9356 bfd_put_32 (obfd, BCTR, p), p += 4;
9363 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9364 if (PPC_HA (offset + 16) != PPC_HA (offset))
9366 r[1].r_offset = r[0].r_offset + 4;
9367 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9368 r[1].r_addend = r[0].r_addend;
9372 r[1].r_offset = r[0].r_offset + 8;
9373 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9374 r[1].r_addend = r[0].r_addend + 16;
9375 r[2].r_offset = r[1].r_offset + 4;
9376 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9377 r[2].r_addend = r[0].r_addend + 8;
9380 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9381 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9382 if (PPC_HA (offset + 16) != PPC_HA (offset))
9384 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9387 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9388 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9389 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9390 bfd_put_32 (obfd, BCTR, p), p += 4;
9395 /* Build a special .plt call stub for __tls_get_addr. */
9397 #define LD_R11_0R3 0xe9630000
9398 #define LD_R12_0R3 0xe9830000
9399 #define MR_R0_R3 0x7c601b78
9400 #define CMPDI_R11_0 0x2c2b0000
9401 #define ADD_R3_R12_R13 0x7c6c6a14
9402 #define BEQLR 0x4d820020
9403 #define MR_R3_R0 0x7c030378
9404 #define MFLR_R11 0x7d6802a6
9405 #define STD_R11_0R1 0xf9610000
9406 #define BCTRL 0x4e800421
9407 #define LD_R11_0R1 0xe9610000
9408 #define LD_R2_0R1 0xe8410000
9409 #define MTLR_R11 0x7d6803a6
9411 static inline bfd_byte *
9412 build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset,
9413 Elf_Internal_Rela *r)
9415 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9416 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9417 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9418 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9419 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9420 bfd_put_32 (obfd, BEQLR, p), p += 4;
9421 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9422 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9423 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9426 r[0].r_offset += 9 * 4;
9427 p = build_plt_stub (obfd, p, offset, r);
9428 bfd_put_32 (obfd, BCTRL, p - 4);
9430 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9431 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9432 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9433 bfd_put_32 (obfd, BLR, p), p += 4;
9438 static Elf_Internal_Rela *
9439 get_relocs (asection *sec, int count)
9441 Elf_Internal_Rela *relocs;
9442 struct bfd_elf_section_data *elfsec_data;
9444 elfsec_data = elf_section_data (sec);
9445 relocs = elfsec_data->relocs;
9448 bfd_size_type relsize;
9449 relsize = sec->reloc_count * sizeof (*relocs);
9450 relocs = bfd_alloc (sec->owner, relsize);
9453 elfsec_data->relocs = relocs;
9454 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9455 sizeof (Elf_Internal_Shdr));
9456 if (elfsec_data->rela.hdr == NULL)
9458 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9459 * sizeof (Elf64_External_Rela));
9460 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
9461 sec->reloc_count = 0;
9463 relocs += sec->reloc_count;
9464 sec->reloc_count += count;
9469 get_r2off (struct ppc_link_hash_table *htab,
9470 struct ppc_stub_hash_entry *stub_entry)
9472 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9476 /* Support linking -R objects. Get the toc pointer from the
9479 asection *opd = stub_entry->h->elf.root.u.def.section;
9480 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9482 if (strcmp (opd->name, ".opd") != 0
9483 || opd->reloc_count != 0)
9485 (*_bfd_error_handler) (_("cannot find opd entry toc for %s"),
9486 stub_entry->h->elf.root.root.string);
9487 bfd_set_error (bfd_error_bad_value);
9490 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9492 r2off = bfd_get_64 (opd->owner, buf);
9493 r2off -= elf_gp (stub_entry->id_sec->output_section->owner);
9495 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9500 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9502 struct ppc_stub_hash_entry *stub_entry;
9503 struct ppc_branch_hash_entry *br_entry;
9504 struct bfd_link_info *info;
9505 struct ppc_link_hash_table *htab;
9510 Elf_Internal_Rela *r;
9513 /* Massage our args to the form they really have. */
9514 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9517 htab = ppc_hash_table (info);
9521 /* Make a note of the offset within the stubs for this entry. */
9522 stub_entry->stub_offset = stub_entry->stub_sec->size;
9523 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9525 htab->stub_count[stub_entry->stub_type - 1] += 1;
9526 switch (stub_entry->stub_type)
9528 case ppc_stub_long_branch:
9529 case ppc_stub_long_branch_r2off:
9530 /* Branches are relative. This is where we are going to. */
9531 off = dest = (stub_entry->target_value
9532 + stub_entry->target_section->output_offset
9533 + stub_entry->target_section->output_section->vma);
9535 /* And this is where we are coming from. */
9536 off -= (stub_entry->stub_offset
9537 + stub_entry->stub_sec->output_offset
9538 + stub_entry->stub_sec->output_section->vma);
9541 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9543 bfd_vma r2off = get_r2off (htab, stub_entry);
9547 htab->stub_error = TRUE;
9550 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9553 if (PPC_HA (r2off) != 0)
9556 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9559 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9563 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9565 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9567 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
9568 stub_entry->root.string);
9569 htab->stub_error = TRUE;
9573 if (info->emitrelocations)
9575 r = get_relocs (stub_entry->stub_sec, 1);
9578 r->r_offset = loc - stub_entry->stub_sec->contents;
9579 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9581 if (stub_entry->h != NULL)
9583 struct elf_link_hash_entry **hashes;
9584 unsigned long symndx;
9585 struct ppc_link_hash_entry *h;
9587 hashes = elf_sym_hashes (htab->stub_bfd);
9590 bfd_size_type hsize;
9592 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9593 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9596 elf_sym_hashes (htab->stub_bfd) = hashes;
9597 htab->stub_globals = 1;
9599 symndx = htab->stub_globals++;
9601 hashes[symndx] = &h->elf;
9602 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9603 if (h->oh != NULL && h->oh->is_func)
9604 h = ppc_follow_link (h->oh);
9605 if (h->elf.root.u.def.section != stub_entry->target_section)
9606 /* H is an opd symbol. The addend must be zero. */
9610 off = (h->elf.root.u.def.value
9611 + h->elf.root.u.def.section->output_offset
9612 + h->elf.root.u.def.section->output_section->vma);
9619 case ppc_stub_plt_branch:
9620 case ppc_stub_plt_branch_r2off:
9621 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9622 stub_entry->root.string + 9,
9624 if (br_entry == NULL)
9626 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
9627 stub_entry->root.string);
9628 htab->stub_error = TRUE;
9632 dest = (stub_entry->target_value
9633 + stub_entry->target_section->output_offset
9634 + stub_entry->target_section->output_section->vma);
9636 bfd_put_64 (htab->brlt->owner, dest,
9637 htab->brlt->contents + br_entry->offset);
9639 if (br_entry->iter == htab->stub_iteration)
9643 if (htab->relbrlt != NULL)
9645 /* Create a reloc for the branch lookup table entry. */
9646 Elf_Internal_Rela rela;
9649 rela.r_offset = (br_entry->offset
9650 + htab->brlt->output_offset
9651 + htab->brlt->output_section->vma);
9652 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9653 rela.r_addend = dest;
9655 rl = htab->relbrlt->contents;
9656 rl += (htab->relbrlt->reloc_count++
9657 * sizeof (Elf64_External_Rela));
9658 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9660 else if (info->emitrelocations)
9662 r = get_relocs (htab->brlt, 1);
9665 /* brlt, being SEC_LINKER_CREATED does not go through the
9666 normal reloc processing. Symbols and offsets are not
9667 translated from input file to output file form, so
9668 set up the offset per the output file. */
9669 r->r_offset = (br_entry->offset
9670 + htab->brlt->output_offset
9671 + htab->brlt->output_section->vma);
9672 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9677 dest = (br_entry->offset
9678 + htab->brlt->output_offset
9679 + htab->brlt->output_section->vma);
9682 - elf_gp (htab->brlt->output_section->owner)
9683 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9685 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9687 (*_bfd_error_handler)
9688 (_("linkage table error against `%s'"),
9689 stub_entry->root.string);
9690 bfd_set_error (bfd_error_bad_value);
9691 htab->stub_error = TRUE;
9695 if (info->emitrelocations)
9697 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
9700 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9701 if (bfd_big_endian (info->output_bfd))
9703 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
9705 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9706 r[0].r_addend = dest;
9707 if (PPC_HA (off) != 0)
9709 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9710 r[1].r_offset = r[0].r_offset + 4;
9711 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9712 r[1].r_addend = r[0].r_addend;
9716 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9718 if (PPC_HA (off) != 0)
9721 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9723 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9728 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9733 bfd_vma r2off = get_r2off (htab, stub_entry);
9737 htab->stub_error = TRUE;
9741 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9744 if (PPC_HA (off) != 0)
9747 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9749 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9754 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9758 if (PPC_HA (r2off) != 0)
9761 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9764 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9767 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
9769 bfd_put_32 (htab->stub_bfd, BCTR, loc);
9772 case ppc_stub_plt_call:
9773 if (stub_entry->h != NULL
9774 && stub_entry->h->is_func_descriptor
9775 && stub_entry->h->oh != NULL)
9777 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
9779 /* If the old-ABI "dot-symbol" is undefined make it weak so
9780 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9781 FIXME: We used to define the symbol on one of the call
9782 stubs instead, which is why we test symbol section id
9783 against htab->top_id in various places. Likely all
9784 these checks could now disappear. */
9785 if (fh->elf.root.type == bfd_link_hash_undefined)
9786 fh->elf.root.type = bfd_link_hash_undefweak;
9789 /* Now build the stub. */
9790 dest = stub_entry->plt_ent->plt.offset & ~1;
9791 if (dest >= (bfd_vma) -2)
9795 if (!htab->elf.dynamic_sections_created
9796 || stub_entry->h == NULL
9797 || stub_entry->h->elf.dynindx == -1)
9800 dest += plt->output_offset + plt->output_section->vma;
9802 if (stub_entry->h == NULL
9803 && (stub_entry->plt_ent->plt.offset & 1) == 0)
9805 Elf_Internal_Rela rela;
9808 rela.r_offset = dest;
9809 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
9810 rela.r_addend = (stub_entry->target_value
9811 + stub_entry->target_section->output_offset
9812 + stub_entry->target_section->output_section->vma);
9814 rl = (htab->reliplt->contents
9815 + (htab->reliplt->reloc_count++
9816 * sizeof (Elf64_External_Rela)));
9817 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
9818 stub_entry->plt_ent->plt.offset |= 1;
9822 - elf_gp (plt->output_section->owner)
9823 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9825 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9827 (*_bfd_error_handler)
9828 (_("linkage table error against `%s'"),
9829 stub_entry->h != NULL
9830 ? stub_entry->h->elf.root.root.string
9832 bfd_set_error (bfd_error_bad_value);
9833 htab->stub_error = TRUE;
9838 if (info->emitrelocations)
9840 r = get_relocs (stub_entry->stub_sec,
9841 (2 + (PPC_HA (off) != 0)
9842 + (PPC_HA (off + 16) == PPC_HA (off))));
9845 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9846 if (bfd_big_endian (info->output_bfd))
9848 r[0].r_addend = dest;
9850 if (stub_entry->h != NULL
9851 && (stub_entry->h == htab->tls_get_addr_fd
9852 || stub_entry->h == htab->tls_get_addr)
9853 && !htab->no_tls_get_addr_opt)
9854 p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r);
9856 p = build_plt_stub (htab->stub_bfd, loc, off, r);
9865 stub_entry->stub_sec->size += size;
9867 if (htab->emit_stub_syms)
9869 struct elf_link_hash_entry *h;
9872 const char *const stub_str[] = { "long_branch",
9873 "long_branch_r2off",
9878 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
9879 len2 = strlen (stub_entry->root.string);
9880 name = bfd_malloc (len1 + len2 + 2);
9883 memcpy (name, stub_entry->root.string, 9);
9884 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
9885 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
9886 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
9889 if (h->root.type == bfd_link_hash_new)
9891 h->root.type = bfd_link_hash_defined;
9892 h->root.u.def.section = stub_entry->stub_sec;
9893 h->root.u.def.value = stub_entry->stub_offset;
9896 h->ref_regular_nonweak = 1;
9897 h->forced_local = 1;
9905 /* As above, but don't actually build the stub. Just bump offset so
9906 we know stub section sizes, and select plt_branch stubs where
9907 long_branch stubs won't do. */
9910 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9912 struct ppc_stub_hash_entry *stub_entry;
9913 struct bfd_link_info *info;
9914 struct ppc_link_hash_table *htab;
9918 /* Massage our args to the form they really have. */
9919 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9922 htab = ppc_hash_table (info);
9926 if (stub_entry->stub_type == ppc_stub_plt_call)
9929 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
9930 if (off >= (bfd_vma) -2)
9933 if (!htab->elf.dynamic_sections_created
9934 || stub_entry->h == NULL
9935 || stub_entry->h->elf.dynindx == -1)
9937 off += (plt->output_offset
9938 + plt->output_section->vma
9939 - elf_gp (plt->output_section->owner)
9940 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9942 size = PLT_CALL_STUB_SIZE;
9943 if (PPC_HA (off) == 0)
9945 if (PPC_HA (off + 16) != PPC_HA (off))
9947 if (stub_entry->h != NULL
9948 && (stub_entry->h == htab->tls_get_addr_fd
9949 || stub_entry->h == htab->tls_get_addr)
9950 && !htab->no_tls_get_addr_opt)
9952 if (info->emitrelocations)
9954 stub_entry->stub_sec->reloc_count
9955 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
9956 stub_entry->stub_sec->flags |= SEC_RELOC;
9961 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9965 off = (stub_entry->target_value
9966 + stub_entry->target_section->output_offset
9967 + stub_entry->target_section->output_section->vma);
9968 off -= (stub_entry->stub_sec->size
9969 + stub_entry->stub_sec->output_offset
9970 + stub_entry->stub_sec->output_section->vma);
9972 /* Reset the stub type from the plt variant in case we now
9973 can reach with a shorter stub. */
9974 if (stub_entry->stub_type >= ppc_stub_plt_branch)
9975 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
9978 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9980 r2off = get_r2off (htab, stub_entry);
9983 htab->stub_error = TRUE;
9987 if (PPC_HA (r2off) != 0)
9992 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9993 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9995 struct ppc_branch_hash_entry *br_entry;
9997 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9998 stub_entry->root.string + 9,
10000 if (br_entry == NULL)
10002 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
10003 stub_entry->root.string);
10004 htab->stub_error = TRUE;
10008 if (br_entry->iter != htab->stub_iteration)
10010 br_entry->iter = htab->stub_iteration;
10011 br_entry->offset = htab->brlt->size;
10012 htab->brlt->size += 8;
10014 if (htab->relbrlt != NULL)
10015 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10016 else if (info->emitrelocations)
10018 htab->brlt->reloc_count += 1;
10019 htab->brlt->flags |= SEC_RELOC;
10023 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10024 off = (br_entry->offset
10025 + htab->brlt->output_offset
10026 + htab->brlt->output_section->vma
10027 - elf_gp (htab->brlt->output_section->owner)
10028 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10030 if (info->emitrelocations)
10032 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10033 stub_entry->stub_sec->flags |= SEC_RELOC;
10036 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10039 if (PPC_HA (off) != 0)
10045 if (PPC_HA (off) != 0)
10048 if (PPC_HA (r2off) != 0)
10052 else if (info->emitrelocations)
10054 stub_entry->stub_sec->reloc_count += 1;
10055 stub_entry->stub_sec->flags |= SEC_RELOC;
10059 stub_entry->stub_sec->size += size;
10063 /* Set up various things so that we can make a list of input sections
10064 for each output section included in the link. Returns -1 on error,
10065 0 when no stubs will be needed, and 1 on success. */
10068 ppc64_elf_setup_section_lists
10069 (struct bfd_link_info *info,
10070 asection *(*add_stub_section) (const char *, asection *),
10071 void (*layout_sections_again) (void))
10074 int top_id, top_index, id;
10076 asection **input_list;
10078 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10082 /* Stash our params away. */
10083 htab->add_stub_section = add_stub_section;
10084 htab->layout_sections_again = layout_sections_again;
10086 if (htab->brlt == NULL)
10089 /* Find the top input section id. */
10090 for (input_bfd = info->input_bfds, top_id = 3;
10092 input_bfd = input_bfd->link_next)
10094 for (section = input_bfd->sections;
10096 section = section->next)
10098 if (top_id < section->id)
10099 top_id = section->id;
10103 htab->top_id = top_id;
10104 amt = sizeof (struct map_stub) * (top_id + 1);
10105 htab->stub_group = bfd_zmalloc (amt);
10106 if (htab->stub_group == NULL)
10109 /* Set toc_off for com, und, abs and ind sections. */
10110 for (id = 0; id < 3; id++)
10111 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10113 /* We can't use output_bfd->section_count here to find the top output
10114 section index as some sections may have been removed, and
10115 strip_excluded_output_sections doesn't renumber the indices. */
10116 for (section = info->output_bfd->sections, top_index = 0;
10118 section = section->next)
10120 if (top_index < section->index)
10121 top_index = section->index;
10124 htab->top_index = top_index;
10125 amt = sizeof (asection *) * (top_index + 1);
10126 input_list = bfd_zmalloc (amt);
10127 htab->input_list = input_list;
10128 if (input_list == NULL)
10134 /* Set up for first pass at multitoc partitioning. */
10137 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10139 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10141 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10142 htab->toc_curr = elf_gp (info->output_bfd);
10143 htab->toc_bfd = NULL;
10144 htab->toc_first_sec = NULL;
10147 /* The linker repeatedly calls this function for each TOC input section
10148 and linker generated GOT section. Group input bfds such that the toc
10149 within a group is less than 64k in size. */
10152 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10154 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10155 bfd_vma addr, off, limit;
10160 if (!htab->second_toc_pass)
10162 /* Keep track of the first .toc or .got section for this input bfd. */
10163 if (htab->toc_bfd != isec->owner)
10165 htab->toc_bfd = isec->owner;
10166 htab->toc_first_sec = isec;
10169 addr = isec->output_offset + isec->output_section->vma;
10170 off = addr - htab->toc_curr;
10171 limit = 0x80008000;
10172 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10174 if (off + isec->size > limit)
10176 addr = (htab->toc_first_sec->output_offset
10177 + htab->toc_first_sec->output_section->vma);
10178 htab->toc_curr = addr;
10181 /* toc_curr is the base address of this toc group. Set elf_gp
10182 for the input section to be the offset relative to the
10183 output toc base plus 0x8000. Making the input elf_gp an
10184 offset allows us to move the toc as a whole without
10185 recalculating input elf_gp. */
10186 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10187 off += TOC_BASE_OFF;
10189 /* Die if someone uses a linker script that doesn't keep input
10190 file .toc and .got together. */
10191 if (elf_gp (isec->owner) != 0
10192 && elf_gp (isec->owner) != off)
10195 elf_gp (isec->owner) = off;
10199 /* During the second pass toc_first_sec points to the start of
10200 a toc group, and toc_curr is used to track the old elf_gp.
10201 We use toc_bfd to ensure we only look at each bfd once. */
10202 if (htab->toc_bfd == isec->owner)
10204 htab->toc_bfd = isec->owner;
10206 if (htab->toc_first_sec == NULL
10207 || htab->toc_curr != elf_gp (isec->owner))
10209 htab->toc_curr = elf_gp (isec->owner);
10210 htab->toc_first_sec = isec;
10212 addr = (htab->toc_first_sec->output_offset
10213 + htab->toc_first_sec->output_section->vma);
10214 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10215 elf_gp (isec->owner) = off;
10220 /* Called via elf_link_hash_traverse to merge GOT entries for global
10224 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10226 if (h->root.type == bfd_link_hash_indirect)
10229 if (h->root.type == bfd_link_hash_warning)
10230 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10232 merge_got_entries (&h->got.glist);
10237 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10241 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10243 struct got_entry *gent;
10245 if (h->root.type == bfd_link_hash_indirect)
10248 if (h->root.type == bfd_link_hash_warning)
10249 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10251 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10252 if (!gent->is_indirect)
10253 allocate_got (h, (struct bfd_link_info *) inf, gent);
10257 /* Called on the first multitoc pass after the last call to
10258 ppc64_elf_next_toc_section. This function removes duplicate GOT
10262 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10264 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10265 struct bfd *ibfd, *ibfd2;
10266 bfd_boolean done_something;
10268 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10270 if (!htab->do_multi_toc)
10273 /* Merge global sym got entries within a toc group. */
10274 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10276 /* And tlsld_got. */
10277 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10279 struct got_entry *ent, *ent2;
10281 if (!is_ppc64_elf (ibfd))
10284 ent = ppc64_tlsld_got (ibfd);
10285 if (!ent->is_indirect
10286 && ent->got.offset != (bfd_vma) -1)
10288 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10290 if (!is_ppc64_elf (ibfd2))
10293 ent2 = ppc64_tlsld_got (ibfd2);
10294 if (!ent2->is_indirect
10295 && ent2->got.offset != (bfd_vma) -1
10296 && elf_gp (ibfd2) == elf_gp (ibfd))
10298 ent2->is_indirect = TRUE;
10299 ent2->got.ent = ent;
10305 /* Zap sizes of got sections. */
10306 htab->reliplt->rawsize = htab->reliplt->size;
10307 htab->reliplt->size -= htab->got_reli_size;
10308 htab->got_reli_size = 0;
10310 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10312 asection *got, *relgot;
10314 if (!is_ppc64_elf (ibfd))
10317 got = ppc64_elf_tdata (ibfd)->got;
10320 got->rawsize = got->size;
10322 relgot = ppc64_elf_tdata (ibfd)->relgot;
10323 relgot->rawsize = relgot->size;
10328 /* Now reallocate the got, local syms first. We don't need to
10329 allocate section contents again since we never increase size. */
10330 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10332 struct got_entry **lgot_ents;
10333 struct got_entry **end_lgot_ents;
10334 struct plt_entry **local_plt;
10335 struct plt_entry **end_local_plt;
10336 unsigned char *lgot_masks;
10337 bfd_size_type locsymcount;
10338 Elf_Internal_Shdr *symtab_hdr;
10339 asection *s, *srel;
10341 if (!is_ppc64_elf (ibfd))
10344 lgot_ents = elf_local_got_ents (ibfd);
10348 symtab_hdr = &elf_symtab_hdr (ibfd);
10349 locsymcount = symtab_hdr->sh_info;
10350 end_lgot_ents = lgot_ents + locsymcount;
10351 local_plt = (struct plt_entry **) end_lgot_ents;
10352 end_local_plt = local_plt + locsymcount;
10353 lgot_masks = (unsigned char *) end_local_plt;
10354 s = ppc64_elf_tdata (ibfd)->got;
10355 srel = ppc64_elf_tdata (ibfd)->relgot;
10356 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10358 struct got_entry *ent;
10360 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10362 unsigned int num = 1;
10363 ent->got.offset = s->size;
10364 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10366 s->size += num * 8;
10368 srel->size += num * sizeof (Elf64_External_Rela);
10369 else if ((*lgot_masks & PLT_IFUNC) != 0)
10371 htab->reliplt->size
10372 += num * sizeof (Elf64_External_Rela);
10373 htab->got_reli_size
10374 += num * sizeof (Elf64_External_Rela);
10380 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10382 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10384 struct got_entry *ent;
10386 if (!is_ppc64_elf (ibfd))
10389 ent = ppc64_tlsld_got (ibfd);
10390 if (!ent->is_indirect
10391 && ent->got.offset != (bfd_vma) -1)
10393 asection *s = ppc64_elf_tdata (ibfd)->got;
10394 ent->got.offset = s->size;
10398 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10399 srel->size += sizeof (Elf64_External_Rela);
10404 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10405 if (!done_something)
10406 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10410 if (!is_ppc64_elf (ibfd))
10413 got = ppc64_elf_tdata (ibfd)->got;
10416 done_something = got->rawsize != got->size;
10417 if (done_something)
10422 if (done_something)
10423 (*htab->layout_sections_again) ();
10425 /* Set up for second pass over toc sections to recalculate elf_gp
10426 on input sections. */
10427 htab->toc_bfd = NULL;
10428 htab->toc_first_sec = NULL;
10429 htab->second_toc_pass = TRUE;
10430 return done_something;
10433 /* Called after second pass of multitoc partitioning. */
10436 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10438 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10440 /* After the second pass, toc_curr tracks the TOC offset used
10441 for code sections below in ppc64_elf_next_input_section. */
10442 htab->toc_curr = TOC_BASE_OFF;
10445 /* No toc references were found in ISEC. If the code in ISEC makes no
10446 calls, then there's no need to use toc adjusting stubs when branching
10447 into ISEC. Actually, indirect calls from ISEC are OK as they will
10448 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10449 needed, and 2 if a cyclical call-graph was found but no other reason
10450 for a stub was detected. If called from the top level, a return of
10451 2 means the same as a return of 0. */
10454 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10458 /* Mark this section as checked. */
10459 isec->call_check_done = 1;
10461 /* We know none of our code bearing sections will need toc stubs. */
10462 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10465 if (isec->size == 0)
10468 if (isec->output_section == NULL)
10472 if (isec->reloc_count != 0)
10474 Elf_Internal_Rela *relstart, *rel;
10475 Elf_Internal_Sym *local_syms;
10476 struct ppc_link_hash_table *htab;
10478 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10479 info->keep_memory);
10480 if (relstart == NULL)
10483 /* Look for branches to outside of this section. */
10485 htab = ppc_hash_table (info);
10489 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10491 enum elf_ppc64_reloc_type r_type;
10492 unsigned long r_symndx;
10493 struct elf_link_hash_entry *h;
10494 struct ppc_link_hash_entry *eh;
10495 Elf_Internal_Sym *sym;
10497 struct _opd_sec_data *opd;
10501 r_type = ELF64_R_TYPE (rel->r_info);
10502 if (r_type != R_PPC64_REL24
10503 && r_type != R_PPC64_REL14
10504 && r_type != R_PPC64_REL14_BRTAKEN
10505 && r_type != R_PPC64_REL14_BRNTAKEN)
10508 r_symndx = ELF64_R_SYM (rel->r_info);
10509 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10516 /* Calls to dynamic lib functions go through a plt call stub
10518 eh = (struct ppc_link_hash_entry *) h;
10520 && (eh->elf.plt.plist != NULL
10522 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10528 if (sym_sec == NULL)
10529 /* Ignore other undefined symbols. */
10532 /* Assume branches to other sections not included in the
10533 link need stubs too, to cover -R and absolute syms. */
10534 if (sym_sec->output_section == NULL)
10541 sym_value = sym->st_value;
10544 if (h->root.type != bfd_link_hash_defined
10545 && h->root.type != bfd_link_hash_defweak)
10547 sym_value = h->root.u.def.value;
10549 sym_value += rel->r_addend;
10551 /* If this branch reloc uses an opd sym, find the code section. */
10552 opd = get_opd_info (sym_sec);
10555 if (h == NULL && opd->adjust != NULL)
10559 adjust = opd->adjust[sym->st_value / 8];
10561 /* Assume deleted functions won't ever be called. */
10563 sym_value += adjust;
10566 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10567 if (dest == (bfd_vma) -1)
10572 + sym_sec->output_offset
10573 + sym_sec->output_section->vma);
10575 /* Ignore branch to self. */
10576 if (sym_sec == isec)
10579 /* If the called function uses the toc, we need a stub. */
10580 if (sym_sec->has_toc_reloc
10581 || sym_sec->makes_toc_func_call)
10587 /* Assume any branch that needs a long branch stub might in fact
10588 need a plt_branch stub. A plt_branch stub uses r2. */
10589 else if (dest - (isec->output_offset
10590 + isec->output_section->vma
10591 + rel->r_offset) + (1 << 25) >= (2 << 25))
10597 /* If calling back to a section in the process of being
10598 tested, we can't say for sure that no toc adjusting stubs
10599 are needed, so don't return zero. */
10600 else if (sym_sec->call_check_in_progress)
10603 /* Branches to another section that itself doesn't have any TOC
10604 references are OK. Recursively call ourselves to check. */
10605 else if (!sym_sec->call_check_done)
10609 /* Mark current section as indeterminate, so that other
10610 sections that call back to current won't be marked as
10612 isec->call_check_in_progress = 1;
10613 recur = toc_adjusting_stub_needed (info, sym_sec);
10614 isec->call_check_in_progress = 0;
10625 if (local_syms != NULL
10626 && (elf_symtab_hdr (isec->owner).contents
10627 != (unsigned char *) local_syms))
10629 if (elf_section_data (isec)->relocs != relstart)
10634 && isec->map_head.s != NULL
10635 && (strcmp (isec->output_section->name, ".init") == 0
10636 || strcmp (isec->output_section->name, ".fini") == 0))
10638 if (isec->map_head.s->has_toc_reloc
10639 || isec->map_head.s->makes_toc_func_call)
10641 else if (!isec->map_head.s->call_check_done)
10644 isec->call_check_in_progress = 1;
10645 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
10646 isec->call_check_in_progress = 0;
10653 isec->makes_toc_func_call = 1;
10658 /* The linker repeatedly calls this function for each input section,
10659 in the order that input sections are linked into output sections.
10660 Build lists of input sections to determine groupings between which
10661 we may insert linker stubs. */
10664 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
10666 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10671 if ((isec->output_section->flags & SEC_CODE) != 0
10672 && isec->output_section->index <= htab->top_index)
10674 asection **list = htab->input_list + isec->output_section->index;
10675 /* Steal the link_sec pointer for our list. */
10676 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10677 /* This happens to make the list in reverse order,
10678 which is what we want. */
10679 PREV_SEC (isec) = *list;
10683 if (htab->multi_toc_needed)
10685 /* If a code section has a function that uses the TOC then we need
10686 to use the right TOC (obviously). Also, make sure that .opd gets
10687 the correct TOC value for R_PPC64_TOC relocs that don't have or
10688 can't find their function symbol (shouldn't ever happen now).
10689 Also specially treat .fixup for the linux kernel. .fixup
10690 contains branches, but only back to the function that hit an
10692 if (isec->has_toc_reloc
10693 || (isec->flags & SEC_CODE) == 0
10694 || strcmp (isec->name, ".fixup") == 0)
10696 if (elf_gp (isec->owner) != 0)
10697 htab->toc_curr = elf_gp (isec->owner);
10701 if (!isec->call_check_done
10702 && toc_adjusting_stub_needed (info, isec) < 0)
10704 /* If we make a local call from this section, ie. a branch
10705 without a following nop, then we have no place to put a
10706 toc restoring insn. We must use the same toc group as
10708 Testing makes_toc_func_call actually tests for *any*
10709 calls to functions that need a good toc pointer. A more
10710 precise test would be better, as this one will set
10711 incorrect values for pasted .init/.fini fragments.
10712 (Fixed later in check_pasted_section.) */
10713 if (isec->makes_toc_func_call
10714 && elf_gp (isec->owner) != 0)
10715 htab->toc_curr = elf_gp (isec->owner);
10719 /* Functions that don't use the TOC can belong in any TOC group.
10720 Use the last TOC base. */
10721 htab->stub_group[isec->id].toc_off = htab->toc_curr;
10725 /* Check that all .init and .fini sections use the same toc, if they
10726 have toc relocs. */
10729 check_pasted_section (struct bfd_link_info *info, const char *name)
10731 asection *o = bfd_get_section_by_name (info->output_bfd, name);
10735 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10736 bfd_vma toc_off = 0;
10739 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10740 if (i->has_toc_reloc)
10743 toc_off = htab->stub_group[i->id].toc_off;
10744 else if (toc_off != htab->stub_group[i->id].toc_off)
10749 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10750 if (i->makes_toc_func_call)
10752 toc_off = htab->stub_group[i->id].toc_off;
10756 /* Make sure the whole pasted function uses the same toc offset. */
10758 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10759 htab->stub_group[i->id].toc_off = toc_off;
10765 ppc64_elf_check_init_fini (struct bfd_link_info *info)
10767 return (check_pasted_section (info, ".init")
10768 & check_pasted_section (info, ".fini"));
10771 /* See whether we can group stub sections together. Grouping stub
10772 sections may result in fewer stubs. More importantly, we need to
10773 put all .init* and .fini* stubs at the beginning of the .init or
10774 .fini output sections respectively, because glibc splits the
10775 _init and _fini functions into multiple parts. Putting a stub in
10776 the middle of a function is not a good idea. */
10779 group_sections (struct ppc_link_hash_table *htab,
10780 bfd_size_type stub_group_size,
10781 bfd_boolean stubs_always_before_branch)
10784 bfd_size_type stub14_group_size;
10785 bfd_boolean suppress_size_errors;
10787 suppress_size_errors = FALSE;
10788 stub14_group_size = stub_group_size;
10789 if (stub_group_size == 1)
10791 /* Default values. */
10792 if (stubs_always_before_branch)
10794 stub_group_size = 0x1e00000;
10795 stub14_group_size = 0x7800;
10799 stub_group_size = 0x1c00000;
10800 stub14_group_size = 0x7000;
10802 suppress_size_errors = TRUE;
10805 list = htab->input_list + htab->top_index;
10808 asection *tail = *list;
10809 while (tail != NULL)
10813 bfd_size_type total;
10814 bfd_boolean big_sec;
10818 total = tail->size;
10819 big_sec = total > (ppc64_elf_section_data (tail) != NULL
10820 && ppc64_elf_section_data (tail)->has_14bit_branch
10821 ? stub14_group_size : stub_group_size);
10822 if (big_sec && !suppress_size_errors)
10823 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
10824 tail->owner, tail);
10825 curr_toc = htab->stub_group[tail->id].toc_off;
10827 while ((prev = PREV_SEC (curr)) != NULL
10828 && ((total += curr->output_offset - prev->output_offset)
10829 < (ppc64_elf_section_data (prev) != NULL
10830 && ppc64_elf_section_data (prev)->has_14bit_branch
10831 ? stub14_group_size : stub_group_size))
10832 && htab->stub_group[prev->id].toc_off == curr_toc)
10835 /* OK, the size from the start of CURR to the end is less
10836 than stub_group_size and thus can be handled by one stub
10837 section. (or the tail section is itself larger than
10838 stub_group_size, in which case we may be toast.) We
10839 should really be keeping track of the total size of stubs
10840 added here, as stubs contribute to the final output
10841 section size. That's a little tricky, and this way will
10842 only break if stubs added make the total size more than
10843 2^25, ie. for the default stub_group_size, if stubs total
10844 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10847 prev = PREV_SEC (tail);
10848 /* Set up this stub group. */
10849 htab->stub_group[tail->id].link_sec = curr;
10851 while (tail != curr && (tail = prev) != NULL);
10853 /* But wait, there's more! Input sections up to stub_group_size
10854 bytes before the stub section can be handled by it too.
10855 Don't do this if we have a really large section after the
10856 stubs, as adding more stubs increases the chance that
10857 branches may not reach into the stub section. */
10858 if (!stubs_always_before_branch && !big_sec)
10861 while (prev != NULL
10862 && ((total += tail->output_offset - prev->output_offset)
10863 < (ppc64_elf_section_data (prev) != NULL
10864 && ppc64_elf_section_data (prev)->has_14bit_branch
10865 ? stub14_group_size : stub_group_size))
10866 && htab->stub_group[prev->id].toc_off == curr_toc)
10869 prev = PREV_SEC (tail);
10870 htab->stub_group[tail->id].link_sec = curr;
10876 while (list-- != htab->input_list);
10877 free (htab->input_list);
10881 /* Determine and set the size of the stub section for a final link.
10883 The basic idea here is to examine all the relocations looking for
10884 PC-relative calls to a target that is unreachable with a "bl"
10888 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size)
10890 bfd_size_type stub_group_size;
10891 bfd_boolean stubs_always_before_branch;
10892 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10897 stubs_always_before_branch = group_size < 0;
10898 if (group_size < 0)
10899 stub_group_size = -group_size;
10901 stub_group_size = group_size;
10903 group_sections (htab, stub_group_size, stubs_always_before_branch);
10908 unsigned int bfd_indx;
10909 asection *stub_sec;
10911 htab->stub_iteration += 1;
10913 for (input_bfd = info->input_bfds, bfd_indx = 0;
10915 input_bfd = input_bfd->link_next, bfd_indx++)
10917 Elf_Internal_Shdr *symtab_hdr;
10919 Elf_Internal_Sym *local_syms = NULL;
10921 if (!is_ppc64_elf (input_bfd))
10924 /* We'll need the symbol table in a second. */
10925 symtab_hdr = &elf_symtab_hdr (input_bfd);
10926 if (symtab_hdr->sh_info == 0)
10929 /* Walk over each section attached to the input bfd. */
10930 for (section = input_bfd->sections;
10932 section = section->next)
10934 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
10936 /* If there aren't any relocs, then there's nothing more
10938 if ((section->flags & SEC_RELOC) == 0
10939 || (section->flags & SEC_ALLOC) == 0
10940 || (section->flags & SEC_LOAD) == 0
10941 || (section->flags & SEC_CODE) == 0
10942 || section->reloc_count == 0)
10945 /* If this section is a link-once section that will be
10946 discarded, then don't create any stubs. */
10947 if (section->output_section == NULL
10948 || section->output_section->owner != info->output_bfd)
10951 /* Get the relocs. */
10953 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
10954 info->keep_memory);
10955 if (internal_relocs == NULL)
10956 goto error_ret_free_local;
10958 /* Now examine each relocation. */
10959 irela = internal_relocs;
10960 irelaend = irela + section->reloc_count;
10961 for (; irela < irelaend; irela++)
10963 enum elf_ppc64_reloc_type r_type;
10964 unsigned int r_indx;
10965 enum ppc_stub_type stub_type;
10966 struct ppc_stub_hash_entry *stub_entry;
10967 asection *sym_sec, *code_sec;
10968 bfd_vma sym_value, code_value;
10969 bfd_vma destination;
10970 bfd_boolean ok_dest;
10971 struct ppc_link_hash_entry *hash;
10972 struct ppc_link_hash_entry *fdh;
10973 struct elf_link_hash_entry *h;
10974 Elf_Internal_Sym *sym;
10976 const asection *id_sec;
10977 struct _opd_sec_data *opd;
10978 struct plt_entry *plt_ent;
10980 r_type = ELF64_R_TYPE (irela->r_info);
10981 r_indx = ELF64_R_SYM (irela->r_info);
10983 if (r_type >= R_PPC64_max)
10985 bfd_set_error (bfd_error_bad_value);
10986 goto error_ret_free_internal;
10989 /* Only look for stubs on branch instructions. */
10990 if (r_type != R_PPC64_REL24
10991 && r_type != R_PPC64_REL14
10992 && r_type != R_PPC64_REL14_BRTAKEN
10993 && r_type != R_PPC64_REL14_BRNTAKEN)
10996 /* Now determine the call target, its name, value,
10998 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
10999 r_indx, input_bfd))
11000 goto error_ret_free_internal;
11001 hash = (struct ppc_link_hash_entry *) h;
11008 sym_value = sym->st_value;
11011 else if (hash->elf.root.type == bfd_link_hash_defined
11012 || hash->elf.root.type == bfd_link_hash_defweak)
11014 sym_value = hash->elf.root.u.def.value;
11015 if (sym_sec->output_section != NULL)
11018 else if (hash->elf.root.type == bfd_link_hash_undefweak
11019 || hash->elf.root.type == bfd_link_hash_undefined)
11021 /* Recognise an old ABI func code entry sym, and
11022 use the func descriptor sym instead if it is
11024 if (hash->elf.root.root.string[0] == '.'
11025 && (fdh = lookup_fdh (hash, htab)) != NULL)
11027 if (fdh->elf.root.type == bfd_link_hash_defined
11028 || fdh->elf.root.type == bfd_link_hash_defweak)
11030 sym_sec = fdh->elf.root.u.def.section;
11031 sym_value = fdh->elf.root.u.def.value;
11032 if (sym_sec->output_section != NULL)
11041 bfd_set_error (bfd_error_bad_value);
11042 goto error_ret_free_internal;
11048 sym_value += irela->r_addend;
11049 destination = (sym_value
11050 + sym_sec->output_offset
11051 + sym_sec->output_section->vma);
11054 code_sec = sym_sec;
11055 code_value = sym_value;
11056 opd = get_opd_info (sym_sec);
11061 if (hash == NULL && opd->adjust != NULL)
11063 long adjust = opd->adjust[sym_value / 8];
11066 code_value += adjust;
11067 sym_value += adjust;
11069 dest = opd_entry_value (sym_sec, sym_value,
11070 &code_sec, &code_value);
11071 if (dest != (bfd_vma) -1)
11073 destination = dest;
11076 /* Fixup old ABI sym to point at code
11078 hash->elf.root.type = bfd_link_hash_defweak;
11079 hash->elf.root.u.def.section = code_sec;
11080 hash->elf.root.u.def.value = code_value;
11085 /* Determine what (if any) linker stub is needed. */
11087 stub_type = ppc_type_of_stub (section, irela, &hash,
11088 &plt_ent, destination);
11090 if (stub_type != ppc_stub_plt_call)
11092 /* Check whether we need a TOC adjusting stub.
11093 Since the linker pastes together pieces from
11094 different object files when creating the
11095 _init and _fini functions, it may be that a
11096 call to what looks like a local sym is in
11097 fact a call needing a TOC adjustment. */
11098 if (code_sec != NULL
11099 && code_sec->output_section != NULL
11100 && (htab->stub_group[code_sec->id].toc_off
11101 != htab->stub_group[section->id].toc_off)
11102 && (code_sec->has_toc_reloc
11103 || code_sec->makes_toc_func_call))
11104 stub_type = ppc_stub_long_branch_r2off;
11107 if (stub_type == ppc_stub_none)
11110 /* __tls_get_addr calls might be eliminated. */
11111 if (stub_type != ppc_stub_plt_call
11113 && (hash == htab->tls_get_addr
11114 || hash == htab->tls_get_addr_fd)
11115 && section->has_tls_reloc
11116 && irela != internal_relocs)
11118 /* Get tls info. */
11119 unsigned char *tls_mask;
11121 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11122 irela - 1, input_bfd))
11123 goto error_ret_free_internal;
11124 if (*tls_mask != 0)
11128 /* Support for grouping stub sections. */
11129 id_sec = htab->stub_group[section->id].link_sec;
11131 /* Get the name of this stub. */
11132 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11134 goto error_ret_free_internal;
11136 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11137 stub_name, FALSE, FALSE);
11138 if (stub_entry != NULL)
11140 /* The proper stub has already been created. */
11145 stub_entry = ppc_add_stub (stub_name, section, htab);
11146 if (stub_entry == NULL)
11149 error_ret_free_internal:
11150 if (elf_section_data (section)->relocs == NULL)
11151 free (internal_relocs);
11152 error_ret_free_local:
11153 if (local_syms != NULL
11154 && (symtab_hdr->contents
11155 != (unsigned char *) local_syms))
11160 stub_entry->stub_type = stub_type;
11161 if (stub_type != ppc_stub_plt_call)
11163 stub_entry->target_value = code_value;
11164 stub_entry->target_section = code_sec;
11168 stub_entry->target_value = sym_value;
11169 stub_entry->target_section = sym_sec;
11171 stub_entry->h = hash;
11172 stub_entry->plt_ent = plt_ent;
11173 stub_entry->addend = irela->r_addend;
11175 if (stub_entry->h != NULL)
11176 htab->stub_globals += 1;
11179 /* We're done with the internal relocs, free them. */
11180 if (elf_section_data (section)->relocs != internal_relocs)
11181 free (internal_relocs);
11184 if (local_syms != NULL
11185 && symtab_hdr->contents != (unsigned char *) local_syms)
11187 if (!info->keep_memory)
11190 symtab_hdr->contents = (unsigned char *) local_syms;
11194 /* We may have added some stubs. Find out the new size of the
11196 for (stub_sec = htab->stub_bfd->sections;
11198 stub_sec = stub_sec->next)
11199 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11201 stub_sec->rawsize = stub_sec->size;
11202 stub_sec->size = 0;
11203 stub_sec->reloc_count = 0;
11204 stub_sec->flags &= ~SEC_RELOC;
11207 htab->brlt->size = 0;
11208 htab->brlt->reloc_count = 0;
11209 htab->brlt->flags &= ~SEC_RELOC;
11210 if (htab->relbrlt != NULL)
11211 htab->relbrlt->size = 0;
11213 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11215 if (info->emitrelocations
11216 && htab->glink != NULL && htab->glink->size != 0)
11218 htab->glink->reloc_count = 1;
11219 htab->glink->flags |= SEC_RELOC;
11222 for (stub_sec = htab->stub_bfd->sections;
11224 stub_sec = stub_sec->next)
11225 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11226 && stub_sec->rawsize != stub_sec->size)
11229 /* Exit from this loop when no stubs have been added, and no stubs
11230 have changed size. */
11231 if (stub_sec == NULL)
11234 /* Ask the linker to do its stuff. */
11235 (*htab->layout_sections_again) ();
11238 /* It would be nice to strip htab->brlt from the output if the
11239 section is empty, but it's too late. If we strip sections here,
11240 the dynamic symbol table is corrupted since the section symbol
11241 for the stripped section isn't written. */
11246 /* Called after we have determined section placement. If sections
11247 move, we'll be called again. Provide a value for TOCstart. */
11250 ppc64_elf_toc (bfd *obfd)
11255 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11256 order. The TOC starts where the first of these sections starts. */
11257 s = bfd_get_section_by_name (obfd, ".got");
11258 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11259 s = bfd_get_section_by_name (obfd, ".toc");
11260 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11261 s = bfd_get_section_by_name (obfd, ".tocbss");
11262 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11263 s = bfd_get_section_by_name (obfd, ".plt");
11264 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11266 /* This may happen for
11267 o references to TOC base (SYM@toc / TOC[tc0]) without a
11269 o bad linker script
11270 o --gc-sections and empty TOC sections
11272 FIXME: Warn user? */
11274 /* Look for a likely section. We probably won't even be
11276 for (s = obfd->sections; s != NULL; s = s->next)
11277 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11279 == (SEC_ALLOC | SEC_SMALL_DATA))
11282 for (s = obfd->sections; s != NULL; s = s->next)
11283 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11284 == (SEC_ALLOC | SEC_SMALL_DATA))
11287 for (s = obfd->sections; s != NULL; s = s->next)
11288 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11292 for (s = obfd->sections; s != NULL; s = s->next)
11293 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11299 TOCstart = s->output_section->vma + s->output_offset;
11304 /* Build all the stubs associated with the current output file.
11305 The stubs are kept in a hash table attached to the main linker
11306 hash table. This function is called via gldelf64ppc_finish. */
11309 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11310 struct bfd_link_info *info,
11313 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11314 asection *stub_sec;
11316 int stub_sec_count = 0;
11321 htab->emit_stub_syms = emit_stub_syms;
11323 /* Allocate memory to hold the linker stubs. */
11324 for (stub_sec = htab->stub_bfd->sections;
11326 stub_sec = stub_sec->next)
11327 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11328 && stub_sec->size != 0)
11330 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11331 if (stub_sec->contents == NULL)
11333 /* We want to check that built size is the same as calculated
11334 size. rawsize is a convenient location to use. */
11335 stub_sec->rawsize = stub_sec->size;
11336 stub_sec->size = 0;
11339 if (htab->glink != NULL && htab->glink->size != 0)
11344 /* Build the .glink plt call stub. */
11345 if (htab->emit_stub_syms)
11347 struct elf_link_hash_entry *h;
11348 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11349 TRUE, FALSE, FALSE);
11352 if (h->root.type == bfd_link_hash_new)
11354 h->root.type = bfd_link_hash_defined;
11355 h->root.u.def.section = htab->glink;
11356 h->root.u.def.value = 8;
11357 h->ref_regular = 1;
11358 h->def_regular = 1;
11359 h->ref_regular_nonweak = 1;
11360 h->forced_local = 1;
11364 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11365 if (info->emitrelocations)
11367 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11370 r->r_offset = (htab->glink->output_offset
11371 + htab->glink->output_section->vma);
11372 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11373 r->r_addend = plt0;
11375 p = htab->glink->contents;
11376 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11377 bfd_put_64 (htab->glink->owner, plt0, p);
11379 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11381 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11383 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11385 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11387 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11389 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11391 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11393 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11395 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11397 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11399 bfd_put_32 (htab->glink->owner, BCTR, p);
11401 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11403 bfd_put_32 (htab->glink->owner, NOP, p);
11407 /* Build the .glink lazy link call stubs. */
11409 while (p < htab->glink->contents + htab->glink->size)
11413 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11418 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11420 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11423 bfd_put_32 (htab->glink->owner,
11424 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11428 htab->glink->rawsize = p - htab->glink->contents;
11431 if (htab->brlt->size != 0)
11433 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11435 if (htab->brlt->contents == NULL)
11438 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11440 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11441 htab->relbrlt->size);
11442 if (htab->relbrlt->contents == NULL)
11446 /* Build the stubs as directed by the stub hash table. */
11447 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
11449 if (htab->relbrlt != NULL)
11450 htab->relbrlt->reloc_count = 0;
11452 for (stub_sec = htab->stub_bfd->sections;
11454 stub_sec = stub_sec->next)
11455 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11457 stub_sec_count += 1;
11458 if (stub_sec->rawsize != stub_sec->size)
11462 if (stub_sec != NULL
11463 || htab->glink->rawsize != htab->glink->size)
11465 htab->stub_error = TRUE;
11466 (*_bfd_error_handler) (_("stubs don't match calculated size"));
11469 if (htab->stub_error)
11474 *stats = bfd_malloc (500);
11475 if (*stats == NULL)
11478 sprintf (*stats, _("linker stubs in %u group%s\n"
11480 " toc adjust %lu\n"
11481 " long branch %lu\n"
11482 " long toc adj %lu\n"
11485 stub_sec_count == 1 ? "" : "s",
11486 htab->stub_count[ppc_stub_long_branch - 1],
11487 htab->stub_count[ppc_stub_long_branch_r2off - 1],
11488 htab->stub_count[ppc_stub_plt_branch - 1],
11489 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
11490 htab->stub_count[ppc_stub_plt_call - 1]);
11495 /* This function undoes the changes made by add_symbol_adjust. */
11498 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11500 struct ppc_link_hash_entry *eh;
11502 if (h->root.type == bfd_link_hash_indirect)
11505 if (h->root.type == bfd_link_hash_warning)
11506 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11508 eh = (struct ppc_link_hash_entry *) h;
11509 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
11512 eh->elf.root.type = bfd_link_hash_undefined;
11517 ppc64_elf_restore_symbols (struct bfd_link_info *info)
11519 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11522 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
11525 /* What to do when ld finds relocations against symbols defined in
11526 discarded sections. */
11528 static unsigned int
11529 ppc64_elf_action_discarded (asection *sec)
11531 if (strcmp (".opd", sec->name) == 0)
11534 if (strcmp (".toc", sec->name) == 0)
11537 if (strcmp (".toc1", sec->name) == 0)
11540 return _bfd_elf_default_action_discarded (sec);
11543 /* REL points to a low-part reloc on a largetoc instruction sequence.
11544 Find the matching high-part reloc instruction and verify that it
11545 is addis REG,x,imm. If so, set *REG to x and return a pointer to
11546 the high-part reloc. */
11548 static const Elf_Internal_Rela *
11549 ha_reloc_match (const Elf_Internal_Rela *relocs,
11550 const Elf_Internal_Rela *rel,
11552 bfd_boolean match_addend,
11553 const bfd *input_bfd,
11554 const bfd_byte *contents)
11556 enum elf_ppc64_reloc_type r_type, r_type_ha;
11557 bfd_vma r_info_ha, r_addend;
11559 r_type = ELF64_R_TYPE (rel->r_info);
11562 case R_PPC64_GOT_TLSLD16_LO:
11563 case R_PPC64_GOT_TLSGD16_LO:
11564 case R_PPC64_GOT_TPREL16_LO_DS:
11565 case R_PPC64_GOT_DTPREL16_LO_DS:
11566 case R_PPC64_GOT16_LO:
11567 case R_PPC64_TOC16_LO:
11568 r_type_ha = r_type + 2;
11570 case R_PPC64_GOT16_LO_DS:
11571 r_type_ha = R_PPC64_GOT16_HA;
11573 case R_PPC64_TOC16_LO_DS:
11574 r_type_ha = R_PPC64_TOC16_HA;
11579 r_info_ha = ELF64_R_INFO (ELF64_R_SYM (rel->r_info), r_type_ha);
11580 r_addend = rel->r_addend;
11582 while (--rel >= relocs)
11583 if (rel->r_info == r_info_ha
11585 || rel->r_addend == r_addend))
11587 const bfd_byte *p = contents + (rel->r_offset & ~3);
11588 unsigned int insn = bfd_get_32 (input_bfd, p);
11589 if ((insn & (0x3f << 26)) == (15u << 26) /* addis rt,x,imm */
11590 && (insn & (0x1f << 21)) == (*reg << 21))
11592 *reg = (insn >> 16) & 0x1f;
11600 /* The RELOCATE_SECTION function is called by the ELF backend linker
11601 to handle the relocations for a section.
11603 The relocs are always passed as Rela structures; if the section
11604 actually uses Rel structures, the r_addend field will always be
11607 This function is responsible for adjust the section contents as
11608 necessary, and (if using Rela relocs and generating a
11609 relocatable output file) adjusting the reloc addend as
11612 This function does not have to worry about setting the reloc
11613 address or the reloc symbol index.
11615 LOCAL_SYMS is a pointer to the swapped in local symbols.
11617 LOCAL_SECTIONS is an array giving the section in the input file
11618 corresponding to the st_shndx field of each local symbol.
11620 The global hash table entry for the global symbols can be found
11621 via elf_sym_hashes (input_bfd).
11623 When generating relocatable output, this function must handle
11624 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11625 going to be the section symbol corresponding to the output
11626 section, which means that the addend must be adjusted
11630 ppc64_elf_relocate_section (bfd *output_bfd,
11631 struct bfd_link_info *info,
11633 asection *input_section,
11634 bfd_byte *contents,
11635 Elf_Internal_Rela *relocs,
11636 Elf_Internal_Sym *local_syms,
11637 asection **local_sections)
11639 struct ppc_link_hash_table *htab;
11640 Elf_Internal_Shdr *symtab_hdr;
11641 struct elf_link_hash_entry **sym_hashes;
11642 Elf_Internal_Rela *rel;
11643 Elf_Internal_Rela *relend;
11644 Elf_Internal_Rela outrel;
11646 struct got_entry **local_got_ents;
11647 unsigned char *ha_opt;
11649 bfd_boolean no_ha_opt;
11650 bfd_boolean ret = TRUE;
11651 bfd_boolean is_opd;
11652 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11653 bfd_boolean is_power4 = FALSE;
11654 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
11656 /* Initialize howto table if needed. */
11657 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
11660 htab = ppc_hash_table (info);
11664 /* Don't relocate stub sections. */
11665 if (input_section->owner == htab->stub_bfd)
11668 BFD_ASSERT (is_ppc64_elf (input_bfd));
11670 local_got_ents = elf_local_got_ents (input_bfd);
11671 TOCstart = elf_gp (output_bfd);
11672 symtab_hdr = &elf_symtab_hdr (input_bfd);
11673 sym_hashes = elf_sym_hashes (input_bfd);
11674 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
11679 relend = relocs + input_section->reloc_count;
11680 for (; rel < relend; rel++)
11682 enum elf_ppc64_reloc_type r_type;
11683 bfd_vma addend, orig_addend;
11684 bfd_reloc_status_type r;
11685 Elf_Internal_Sym *sym;
11687 struct elf_link_hash_entry *h_elf;
11688 struct ppc_link_hash_entry *h;
11689 struct ppc_link_hash_entry *fdh;
11690 const char *sym_name;
11691 unsigned long r_symndx, toc_symndx;
11692 bfd_vma toc_addend;
11693 unsigned char tls_mask, tls_gd, tls_type;
11694 unsigned char sym_type;
11695 bfd_vma relocation;
11696 bfd_boolean unresolved_reloc;
11697 bfd_boolean warned;
11700 struct ppc_stub_hash_entry *stub_entry;
11701 bfd_vma max_br_offset;
11704 r_type = ELF64_R_TYPE (rel->r_info);
11705 r_symndx = ELF64_R_SYM (rel->r_info);
11707 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11708 symbol of the previous ADDR64 reloc. The symbol gives us the
11709 proper TOC base to use. */
11710 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
11712 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
11714 r_symndx = ELF64_R_SYM (rel[-1].r_info);
11720 unresolved_reloc = FALSE;
11722 orig_addend = rel->r_addend;
11724 if (r_symndx < symtab_hdr->sh_info)
11726 /* It's a local symbol. */
11727 struct _opd_sec_data *opd;
11729 sym = local_syms + r_symndx;
11730 sec = local_sections[r_symndx];
11731 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
11732 sym_type = ELF64_ST_TYPE (sym->st_info);
11733 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
11734 opd = get_opd_info (sec);
11735 if (opd != NULL && opd->adjust != NULL)
11737 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
11742 /* If this is a relocation against the opd section sym
11743 and we have edited .opd, adjust the reloc addend so
11744 that ld -r and ld --emit-relocs output is correct.
11745 If it is a reloc against some other .opd symbol,
11746 then the symbol value will be adjusted later. */
11747 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
11748 rel->r_addend += adjust;
11750 relocation += adjust;
11756 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
11757 r_symndx, symtab_hdr, sym_hashes,
11758 h_elf, sec, relocation,
11759 unresolved_reloc, warned);
11760 sym_name = h_elf->root.root.string;
11761 sym_type = h_elf->type;
11763 h = (struct ppc_link_hash_entry *) h_elf;
11765 if (sec != NULL && elf_discarded_section (sec))
11766 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
11768 ppc64_elf_howto_table[r_type],
11771 if (info->relocatable)
11774 /* TLS optimizations. Replace instruction sequences and relocs
11775 based on information we collected in tls_optimize. We edit
11776 RELOCS so that --emit-relocs will output something sensible
11777 for the final instruction stream. */
11782 tls_mask = h->tls_mask;
11783 else if (local_got_ents != NULL)
11785 struct plt_entry **local_plt = (struct plt_entry **)
11786 (local_got_ents + symtab_hdr->sh_info);
11787 unsigned char *lgot_masks = (unsigned char *)
11788 (local_plt + symtab_hdr->sh_info);
11789 tls_mask = lgot_masks[r_symndx];
11792 && (r_type == R_PPC64_TLS
11793 || r_type == R_PPC64_TLSGD
11794 || r_type == R_PPC64_TLSLD))
11796 /* Check for toc tls entries. */
11797 unsigned char *toc_tls;
11799 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11800 &local_syms, rel, input_bfd))
11804 tls_mask = *toc_tls;
11807 /* Check that tls relocs are used with tls syms, and non-tls
11808 relocs are used with non-tls syms. */
11809 if (r_symndx != STN_UNDEF
11810 && r_type != R_PPC64_NONE
11812 || h->elf.root.type == bfd_link_hash_defined
11813 || h->elf.root.type == bfd_link_hash_defweak)
11814 && (IS_PPC64_TLS_RELOC (r_type)
11815 != (sym_type == STT_TLS
11816 || (sym_type == STT_SECTION
11817 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
11820 && (r_type == R_PPC64_TLS
11821 || r_type == R_PPC64_TLSGD
11822 || r_type == R_PPC64_TLSLD))
11823 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11826 (*_bfd_error_handler)
11827 (!IS_PPC64_TLS_RELOC (r_type)
11828 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11829 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11832 (long) rel->r_offset,
11833 ppc64_elf_howto_table[r_type]->name,
11837 /* Ensure reloc mapping code below stays sane. */
11838 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
11839 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
11840 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
11841 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
11842 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
11843 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
11844 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
11845 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
11846 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
11847 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
11855 case R_PPC64_LO_DS_OPT:
11856 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11857 if ((insn & (0x3f << 26)) != 58u << 26)
11859 insn += (14u << 26) - (58u << 26);
11860 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11861 r_type = R_PPC64_TOC16_LO;
11862 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11865 case R_PPC64_TOC16:
11866 case R_PPC64_TOC16_LO:
11867 case R_PPC64_TOC16_DS:
11868 case R_PPC64_TOC16_LO_DS:
11870 /* Check for toc tls entries. */
11871 unsigned char *toc_tls;
11874 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11875 &local_syms, rel, input_bfd);
11881 tls_mask = *toc_tls;
11882 if (r_type == R_PPC64_TOC16_DS
11883 || r_type == R_PPC64_TOC16_LO_DS)
11886 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
11891 /* If we found a GD reloc pair, then we might be
11892 doing a GD->IE transition. */
11895 tls_gd = TLS_TPRELGD;
11896 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11899 else if (retval == 3)
11901 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11909 case R_PPC64_GOT_TPREL16_HI:
11910 case R_PPC64_GOT_TPREL16_HA:
11912 && (tls_mask & TLS_TPREL) == 0)
11914 rel->r_offset -= d_offset;
11915 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11916 r_type = R_PPC64_NONE;
11917 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11921 case R_PPC64_GOT_TPREL16_DS:
11922 case R_PPC64_GOT_TPREL16_LO_DS:
11924 && (tls_mask & TLS_TPREL) == 0)
11927 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11929 insn |= 0x3c0d0000; /* addis 0,13,0 */
11930 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11931 r_type = R_PPC64_TPREL16_HA;
11932 if (toc_symndx != 0)
11934 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11935 rel->r_addend = toc_addend;
11936 /* We changed the symbol. Start over in order to
11937 get h, sym, sec etc. right. */
11942 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11948 && (tls_mask & TLS_TPREL) == 0)
11950 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
11951 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
11954 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11955 /* Was PPC64_TLS which sits on insn boundary, now
11956 PPC64_TPREL16_LO which is at low-order half-word. */
11957 rel->r_offset += d_offset;
11958 r_type = R_PPC64_TPREL16_LO;
11959 if (toc_symndx != 0)
11961 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11962 rel->r_addend = toc_addend;
11963 /* We changed the symbol. Start over in order to
11964 get h, sym, sec etc. right. */
11969 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11973 case R_PPC64_GOT_TLSGD16_HI:
11974 case R_PPC64_GOT_TLSGD16_HA:
11975 tls_gd = TLS_TPRELGD;
11976 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11980 case R_PPC64_GOT_TLSLD16_HI:
11981 case R_PPC64_GOT_TLSLD16_HA:
11982 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11985 if ((tls_mask & tls_gd) != 0)
11986 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11987 + R_PPC64_GOT_TPREL16_DS);
11990 rel->r_offset -= d_offset;
11991 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11992 r_type = R_PPC64_NONE;
11994 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11998 case R_PPC64_GOT_TLSGD16:
11999 case R_PPC64_GOT_TLSGD16_LO:
12000 tls_gd = TLS_TPRELGD;
12001 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12005 case R_PPC64_GOT_TLSLD16:
12006 case R_PPC64_GOT_TLSLD16_LO:
12007 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12009 unsigned int insn1, insn2, insn3;
12013 offset = (bfd_vma) -1;
12014 /* If not using the newer R_PPC64_TLSGD/LD to mark
12015 __tls_get_addr calls, we must trust that the call
12016 stays with its arg setup insns, ie. that the next
12017 reloc is the __tls_get_addr call associated with
12018 the current reloc. Edit both insns. */
12019 if (input_section->has_tls_get_addr_call
12020 && rel + 1 < relend
12021 && branch_reloc_hash_match (input_bfd, rel + 1,
12022 htab->tls_get_addr,
12023 htab->tls_get_addr_fd))
12024 offset = rel[1].r_offset;
12025 if ((tls_mask & tls_gd) != 0)
12028 insn1 = bfd_get_32 (output_bfd,
12029 contents + rel->r_offset - d_offset);
12030 insn1 &= (1 << 26) - (1 << 2);
12031 insn1 |= 58 << 26; /* ld */
12032 insn2 = 0x7c636a14; /* add 3,3,13 */
12033 if (offset != (bfd_vma) -1)
12034 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12035 if ((tls_mask & TLS_EXPLICIT) == 0)
12036 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12037 + R_PPC64_GOT_TPREL16_DS);
12039 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12040 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12045 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12046 insn2 = 0x38630000; /* addi 3,3,0 */
12049 /* Was an LD reloc. */
12051 sec = local_sections[toc_symndx];
12053 r_symndx < symtab_hdr->sh_info;
12055 if (local_sections[r_symndx] == sec)
12057 if (r_symndx >= symtab_hdr->sh_info)
12058 r_symndx = STN_UNDEF;
12059 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12060 if (r_symndx != STN_UNDEF)
12061 rel->r_addend -= (local_syms[r_symndx].st_value
12062 + sec->output_offset
12063 + sec->output_section->vma);
12065 else if (toc_symndx != 0)
12067 r_symndx = toc_symndx;
12068 rel->r_addend = toc_addend;
12070 r_type = R_PPC64_TPREL16_HA;
12071 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12072 if (offset != (bfd_vma) -1)
12074 rel[1].r_info = ELF64_R_INFO (r_symndx,
12075 R_PPC64_TPREL16_LO);
12076 rel[1].r_offset = offset + d_offset;
12077 rel[1].r_addend = rel->r_addend;
12080 bfd_put_32 (output_bfd, insn1,
12081 contents + rel->r_offset - d_offset);
12082 if (offset != (bfd_vma) -1)
12084 insn3 = bfd_get_32 (output_bfd,
12085 contents + offset + 4);
12087 || insn3 == CROR_151515 || insn3 == CROR_313131)
12089 rel[1].r_offset += 4;
12090 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12093 bfd_put_32 (output_bfd, insn2, contents + offset);
12095 if ((tls_mask & tls_gd) == 0
12096 && (tls_gd == 0 || toc_symndx != 0))
12098 /* We changed the symbol. Start over in order
12099 to get h, sym, sec etc. right. */
12106 case R_PPC64_TLSGD:
12107 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12109 unsigned int insn2, insn3;
12110 bfd_vma offset = rel->r_offset;
12112 if ((tls_mask & TLS_TPRELGD) != 0)
12115 r_type = R_PPC64_NONE;
12116 insn2 = 0x7c636a14; /* add 3,3,13 */
12121 if (toc_symndx != 0)
12123 r_symndx = toc_symndx;
12124 rel->r_addend = toc_addend;
12126 r_type = R_PPC64_TPREL16_LO;
12127 rel->r_offset = offset + d_offset;
12128 insn2 = 0x38630000; /* addi 3,3,0 */
12130 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12131 /* Zap the reloc on the _tls_get_addr call too. */
12132 BFD_ASSERT (offset == rel[1].r_offset);
12133 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12134 insn3 = bfd_get_32 (output_bfd,
12135 contents + offset + 4);
12137 || insn3 == CROR_151515 || insn3 == CROR_313131)
12139 rel->r_offset += 4;
12140 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12143 bfd_put_32 (output_bfd, insn2, contents + offset);
12144 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12152 case R_PPC64_TLSLD:
12153 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12155 unsigned int insn2, insn3;
12156 bfd_vma offset = rel->r_offset;
12159 sec = local_sections[toc_symndx];
12161 r_symndx < symtab_hdr->sh_info;
12163 if (local_sections[r_symndx] == sec)
12165 if (r_symndx >= symtab_hdr->sh_info)
12166 r_symndx = STN_UNDEF;
12167 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12168 if (r_symndx != STN_UNDEF)
12169 rel->r_addend -= (local_syms[r_symndx].st_value
12170 + sec->output_offset
12171 + sec->output_section->vma);
12173 r_type = R_PPC64_TPREL16_LO;
12174 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12175 rel->r_offset = offset + d_offset;
12176 /* Zap the reloc on the _tls_get_addr call too. */
12177 BFD_ASSERT (offset == rel[1].r_offset);
12178 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12179 insn2 = 0x38630000; /* addi 3,3,0 */
12180 insn3 = bfd_get_32 (output_bfd,
12181 contents + offset + 4);
12183 || insn3 == CROR_151515 || insn3 == CROR_313131)
12185 rel->r_offset += 4;
12186 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12189 bfd_put_32 (output_bfd, insn2, contents + offset);
12195 case R_PPC64_DTPMOD64:
12196 if (rel + 1 < relend
12197 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12198 && rel[1].r_offset == rel->r_offset + 8)
12200 if ((tls_mask & TLS_GD) == 0)
12202 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12203 if ((tls_mask & TLS_TPRELGD) != 0)
12204 r_type = R_PPC64_TPREL64;
12207 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12208 r_type = R_PPC64_NONE;
12210 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12215 if ((tls_mask & TLS_LD) == 0)
12217 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12218 r_type = R_PPC64_NONE;
12219 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12224 case R_PPC64_TPREL64:
12225 if ((tls_mask & TLS_TPREL) == 0)
12227 r_type = R_PPC64_NONE;
12228 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12233 /* Handle other relocations that tweak non-addend part of insn. */
12235 max_br_offset = 1 << 25;
12236 addend = rel->r_addend;
12242 /* Branch taken prediction relocations. */
12243 case R_PPC64_ADDR14_BRTAKEN:
12244 case R_PPC64_REL14_BRTAKEN:
12245 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12248 /* Branch not taken prediction relocations. */
12249 case R_PPC64_ADDR14_BRNTAKEN:
12250 case R_PPC64_REL14_BRNTAKEN:
12251 insn |= bfd_get_32 (output_bfd,
12252 contents + rel->r_offset) & ~(0x01 << 21);
12255 case R_PPC64_REL14:
12256 max_br_offset = 1 << 15;
12259 case R_PPC64_REL24:
12260 /* Calls to functions with a different TOC, such as calls to
12261 shared objects, need to alter the TOC pointer. This is
12262 done using a linkage stub. A REL24 branching to these
12263 linkage stubs needs to be followed by a nop, as the nop
12264 will be replaced with an instruction to restore the TOC
12269 && h->oh->is_func_descriptor)
12270 fdh = ppc_follow_link (h->oh);
12271 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12272 if (stub_entry != NULL
12273 && (stub_entry->stub_type == ppc_stub_plt_call
12274 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12275 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
12277 bfd_boolean can_plt_call = FALSE;
12279 if (rel->r_offset + 8 <= input_section->size)
12282 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12284 || nop == CROR_151515 || nop == CROR_313131)
12287 && (h == htab->tls_get_addr_fd
12288 || h == htab->tls_get_addr)
12289 && !htab->no_tls_get_addr_opt)
12291 /* Special stub used, leave nop alone. */
12294 bfd_put_32 (input_bfd, LD_R2_40R1,
12295 contents + rel->r_offset + 4);
12296 can_plt_call = TRUE;
12302 if (stub_entry->stub_type == ppc_stub_plt_call)
12304 /* If this is a plain branch rather than a branch
12305 and link, don't require a nop. However, don't
12306 allow tail calls in a shared library as they
12307 will result in r2 being corrupted. */
12309 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
12310 if (info->executable && (br & 1) == 0)
12311 can_plt_call = TRUE;
12316 && strcmp (h->elf.root.root.string,
12317 ".__libc_start_main") == 0)
12319 /* Allow crt1 branch to go via a toc adjusting stub. */
12320 can_plt_call = TRUE;
12324 if (strcmp (input_section->output_section->name,
12326 || strcmp (input_section->output_section->name,
12328 (*_bfd_error_handler)
12329 (_("%B(%A+0x%lx): automatic multiple TOCs "
12330 "not supported using your crt files; "
12331 "recompile with -mminimal-toc or upgrade gcc"),
12334 (long) rel->r_offset);
12336 (*_bfd_error_handler)
12337 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
12338 "does not allow automatic multiple TOCs; "
12339 "recompile with -mminimal-toc or "
12340 "-fno-optimize-sibling-calls, "
12341 "or make `%s' extern"),
12344 (long) rel->r_offset,
12347 bfd_set_error (bfd_error_bad_value);
12353 && stub_entry->stub_type == ppc_stub_plt_call)
12354 unresolved_reloc = FALSE;
12357 if ((stub_entry == NULL
12358 || stub_entry->stub_type == ppc_stub_long_branch
12359 || stub_entry->stub_type == ppc_stub_plt_branch)
12360 && get_opd_info (sec) != NULL)
12362 /* The branch destination is the value of the opd entry. */
12363 bfd_vma off = (relocation + addend
12364 - sec->output_section->vma
12365 - sec->output_offset);
12366 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
12367 if (dest != (bfd_vma) -1)
12374 /* If the branch is out of reach we ought to have a long
12376 from = (rel->r_offset
12377 + input_section->output_offset
12378 + input_section->output_section->vma);
12380 if (stub_entry != NULL
12381 && (stub_entry->stub_type == ppc_stub_long_branch
12382 || stub_entry->stub_type == ppc_stub_plt_branch)
12383 && (r_type == R_PPC64_ADDR14_BRTAKEN
12384 || r_type == R_PPC64_ADDR14_BRNTAKEN
12385 || (relocation + addend - from + max_br_offset
12386 < 2 * max_br_offset)))
12387 /* Don't use the stub if this branch is in range. */
12390 if (stub_entry != NULL)
12392 /* Munge up the value and addend so that we call the stub
12393 rather than the procedure directly. */
12394 relocation = (stub_entry->stub_offset
12395 + stub_entry->stub_sec->output_offset
12396 + stub_entry->stub_sec->output_section->vma);
12404 /* Set 'a' bit. This is 0b00010 in BO field for branch
12405 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12406 for branch on CTR insns (BO == 1a00t or 1a01t). */
12407 if ((insn & (0x14 << 21)) == (0x04 << 21))
12408 insn |= 0x02 << 21;
12409 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12410 insn |= 0x08 << 21;
12416 /* Invert 'y' bit if not the default. */
12417 if ((bfd_signed_vma) (relocation + addend - from) < 0)
12418 insn ^= 0x01 << 21;
12421 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12424 /* NOP out calls to undefined weak functions.
12425 We can thus call a weak function without first
12426 checking whether the function is defined. */
12428 && h->elf.root.type == bfd_link_hash_undefweak
12429 && h->elf.dynindx == -1
12430 && r_type == R_PPC64_REL24
12434 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12440 /* Set `addend'. */
12445 (*_bfd_error_handler)
12446 (_("%B: unknown relocation type %d for symbol %s"),
12447 input_bfd, (int) r_type, sym_name);
12449 bfd_set_error (bfd_error_bad_value);
12455 case R_PPC64_TLSGD:
12456 case R_PPC64_TLSLD:
12457 case R_PPC64_GNU_VTINHERIT:
12458 case R_PPC64_GNU_VTENTRY:
12461 /* GOT16 relocations. Like an ADDR16 using the symbol's
12462 address in the GOT as relocation value instead of the
12463 symbol's value itself. Also, create a GOT entry for the
12464 symbol and put the symbol value there. */
12465 case R_PPC64_GOT_TLSGD16:
12466 case R_PPC64_GOT_TLSGD16_LO:
12467 case R_PPC64_GOT_TLSGD16_HI:
12468 case R_PPC64_GOT_TLSGD16_HA:
12469 tls_type = TLS_TLS | TLS_GD;
12472 case R_PPC64_GOT_TLSLD16:
12473 case R_PPC64_GOT_TLSLD16_LO:
12474 case R_PPC64_GOT_TLSLD16_HI:
12475 case R_PPC64_GOT_TLSLD16_HA:
12476 tls_type = TLS_TLS | TLS_LD;
12479 case R_PPC64_GOT_TPREL16_DS:
12480 case R_PPC64_GOT_TPREL16_LO_DS:
12481 case R_PPC64_GOT_TPREL16_HI:
12482 case R_PPC64_GOT_TPREL16_HA:
12483 tls_type = TLS_TLS | TLS_TPREL;
12486 case R_PPC64_GOT_DTPREL16_DS:
12487 case R_PPC64_GOT_DTPREL16_LO_DS:
12488 case R_PPC64_GOT_DTPREL16_HI:
12489 case R_PPC64_GOT_DTPREL16_HA:
12490 tls_type = TLS_TLS | TLS_DTPREL;
12493 case R_PPC64_GOT16:
12494 case R_PPC64_GOT16_LO:
12495 case R_PPC64_GOT16_HI:
12496 case R_PPC64_GOT16_HA:
12497 case R_PPC64_GOT16_DS:
12498 case R_PPC64_GOT16_LO_DS:
12501 /* Relocation is to the entry for this symbol in the global
12506 unsigned long indx = 0;
12507 struct got_entry *ent;
12509 if (tls_type == (TLS_TLS | TLS_LD)
12511 || !h->elf.def_dynamic))
12512 ent = ppc64_tlsld_got (input_bfd);
12518 bfd_boolean dyn = htab->elf.dynamic_sections_created;
12519 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
12522 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
12523 /* This is actually a static link, or it is a
12524 -Bsymbolic link and the symbol is defined
12525 locally, or the symbol was forced to be local
12526 because of a version file. */
12530 indx = h->elf.dynindx;
12531 unresolved_reloc = FALSE;
12533 ent = h->elf.got.glist;
12537 if (local_got_ents == NULL)
12539 ent = local_got_ents[r_symndx];
12542 for (; ent != NULL; ent = ent->next)
12543 if (ent->addend == orig_addend
12544 && ent->owner == input_bfd
12545 && ent->tls_type == tls_type)
12551 if (ent->is_indirect)
12552 ent = ent->got.ent;
12553 offp = &ent->got.offset;
12554 got = ppc64_elf_tdata (ent->owner)->got;
12558 /* The offset must always be a multiple of 8. We use the
12559 least significant bit to record whether we have already
12560 processed this entry. */
12562 if ((off & 1) != 0)
12566 /* Generate relocs for the dynamic linker, except in
12567 the case of TLSLD where we'll use one entry per
12575 ? h->elf.type == STT_GNU_IFUNC
12576 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
12577 if ((info->shared || indx != 0)
12579 || (tls_type == (TLS_TLS | TLS_LD)
12580 && !h->elf.def_dynamic)
12581 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12582 || h->elf.root.type != bfd_link_hash_undefweak))
12583 relgot = ppc64_elf_tdata (ent->owner)->relgot;
12585 relgot = htab->reliplt;
12586 if (relgot != NULL)
12588 outrel.r_offset = (got->output_section->vma
12589 + got->output_offset
12591 outrel.r_addend = addend;
12592 if (tls_type & (TLS_LD | TLS_GD))
12594 outrel.r_addend = 0;
12595 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
12596 if (tls_type == (TLS_TLS | TLS_GD))
12598 loc = relgot->contents;
12599 loc += (relgot->reloc_count++
12600 * sizeof (Elf64_External_Rela));
12601 bfd_elf64_swap_reloca_out (output_bfd,
12603 outrel.r_offset += 8;
12604 outrel.r_addend = addend;
12606 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12609 else if (tls_type == (TLS_TLS | TLS_DTPREL))
12610 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12611 else if (tls_type == (TLS_TLS | TLS_TPREL))
12612 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
12613 else if (indx != 0)
12614 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
12618 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12620 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12622 /* Write the .got section contents for the sake
12624 loc = got->contents + off;
12625 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
12629 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
12631 outrel.r_addend += relocation;
12632 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
12633 outrel.r_addend -= htab->elf.tls_sec->vma;
12635 loc = relgot->contents;
12636 loc += (relgot->reloc_count++
12637 * sizeof (Elf64_External_Rela));
12638 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12641 /* Init the .got section contents here if we're not
12642 emitting a reloc. */
12645 relocation += addend;
12646 if (tls_type == (TLS_TLS | TLS_LD))
12648 else if (tls_type != 0)
12650 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
12651 if (tls_type == (TLS_TLS | TLS_TPREL))
12652 relocation += DTP_OFFSET - TP_OFFSET;
12654 if (tls_type == (TLS_TLS | TLS_GD))
12656 bfd_put_64 (output_bfd, relocation,
12657 got->contents + off + 8);
12662 bfd_put_64 (output_bfd, relocation,
12663 got->contents + off);
12667 if (off >= (bfd_vma) -2)
12670 relocation = got->output_section->vma + got->output_offset + off;
12671 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
12675 case R_PPC64_PLT16_HA:
12676 case R_PPC64_PLT16_HI:
12677 case R_PPC64_PLT16_LO:
12678 case R_PPC64_PLT32:
12679 case R_PPC64_PLT64:
12680 /* Relocation is to the entry for this symbol in the
12681 procedure linkage table. */
12683 /* Resolve a PLT reloc against a local symbol directly,
12684 without using the procedure linkage table. */
12688 /* It's possible that we didn't make a PLT entry for this
12689 symbol. This happens when statically linking PIC code,
12690 or when using -Bsymbolic. Go find a match if there is a
12692 if (htab->plt != NULL)
12694 struct plt_entry *ent;
12695 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
12696 if (ent->addend == orig_addend
12697 && ent->plt.offset != (bfd_vma) -1)
12699 relocation = (htab->plt->output_section->vma
12700 + htab->plt->output_offset
12701 + ent->plt.offset);
12702 unresolved_reloc = FALSE;
12708 /* Relocation value is TOC base. */
12709 relocation = TOCstart;
12710 if (r_symndx == STN_UNDEF)
12711 relocation += htab->stub_group[input_section->id].toc_off;
12712 else if (unresolved_reloc)
12714 else if (sec != NULL && sec->id <= htab->top_id)
12715 relocation += htab->stub_group[sec->id].toc_off;
12717 unresolved_reloc = TRUE;
12720 /* TOC16 relocs. We want the offset relative to the TOC base,
12721 which is the address of the start of the TOC plus 0x8000.
12722 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12724 case R_PPC64_TOC16:
12725 case R_PPC64_TOC16_LO:
12726 case R_PPC64_TOC16_HI:
12727 case R_PPC64_TOC16_DS:
12728 case R_PPC64_TOC16_LO_DS:
12729 case R_PPC64_TOC16_HA:
12730 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
12733 /* Relocate against the beginning of the section. */
12734 case R_PPC64_SECTOFF:
12735 case R_PPC64_SECTOFF_LO:
12736 case R_PPC64_SECTOFF_HI:
12737 case R_PPC64_SECTOFF_DS:
12738 case R_PPC64_SECTOFF_LO_DS:
12739 case R_PPC64_SECTOFF_HA:
12741 addend -= sec->output_section->vma;
12744 case R_PPC64_REL16:
12745 case R_PPC64_REL16_LO:
12746 case R_PPC64_REL16_HI:
12747 case R_PPC64_REL16_HA:
12750 case R_PPC64_REL14:
12751 case R_PPC64_REL14_BRNTAKEN:
12752 case R_PPC64_REL14_BRTAKEN:
12753 case R_PPC64_REL24:
12756 case R_PPC64_TPREL16:
12757 case R_PPC64_TPREL16_LO:
12758 case R_PPC64_TPREL16_HI:
12759 case R_PPC64_TPREL16_HA:
12760 case R_PPC64_TPREL16_DS:
12761 case R_PPC64_TPREL16_LO_DS:
12762 case R_PPC64_TPREL16_HIGHER:
12763 case R_PPC64_TPREL16_HIGHERA:
12764 case R_PPC64_TPREL16_HIGHEST:
12765 case R_PPC64_TPREL16_HIGHESTA:
12767 && h->elf.root.type == bfd_link_hash_undefweak
12768 && h->elf.dynindx == -1)
12770 /* Make this relocation against an undefined weak symbol
12771 resolve to zero. This is really just a tweak, since
12772 code using weak externs ought to check that they are
12773 defined before using them. */
12774 bfd_byte *p = contents + rel->r_offset - d_offset;
12776 insn = bfd_get_32 (output_bfd, p);
12777 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
12779 bfd_put_32 (output_bfd, insn, p);
12782 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12784 /* The TPREL16 relocs shouldn't really be used in shared
12785 libs as they will result in DT_TEXTREL being set, but
12786 support them anyway. */
12790 case R_PPC64_DTPREL16:
12791 case R_PPC64_DTPREL16_LO:
12792 case R_PPC64_DTPREL16_HI:
12793 case R_PPC64_DTPREL16_HA:
12794 case R_PPC64_DTPREL16_DS:
12795 case R_PPC64_DTPREL16_LO_DS:
12796 case R_PPC64_DTPREL16_HIGHER:
12797 case R_PPC64_DTPREL16_HIGHERA:
12798 case R_PPC64_DTPREL16_HIGHEST:
12799 case R_PPC64_DTPREL16_HIGHESTA:
12800 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12803 case R_PPC64_DTPMOD64:
12808 case R_PPC64_TPREL64:
12809 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12812 case R_PPC64_DTPREL64:
12813 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12816 /* Relocations that may need to be propagated if this is a
12818 case R_PPC64_REL30:
12819 case R_PPC64_REL32:
12820 case R_PPC64_REL64:
12821 case R_PPC64_ADDR14:
12822 case R_PPC64_ADDR14_BRNTAKEN:
12823 case R_PPC64_ADDR14_BRTAKEN:
12824 case R_PPC64_ADDR16:
12825 case R_PPC64_ADDR16_DS:
12826 case R_PPC64_ADDR16_HA:
12827 case R_PPC64_ADDR16_HI:
12828 case R_PPC64_ADDR16_HIGHER:
12829 case R_PPC64_ADDR16_HIGHERA:
12830 case R_PPC64_ADDR16_HIGHEST:
12831 case R_PPC64_ADDR16_HIGHESTA:
12832 case R_PPC64_ADDR16_LO:
12833 case R_PPC64_ADDR16_LO_DS:
12834 case R_PPC64_ADDR24:
12835 case R_PPC64_ADDR32:
12836 case R_PPC64_ADDR64:
12837 case R_PPC64_UADDR16:
12838 case R_PPC64_UADDR32:
12839 case R_PPC64_UADDR64:
12841 if ((input_section->flags & SEC_ALLOC) == 0)
12844 if (NO_OPD_RELOCS && is_opd)
12849 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12850 || h->elf.root.type != bfd_link_hash_undefweak)
12851 && (must_be_dyn_reloc (info, r_type)
12852 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
12853 || (ELIMINATE_COPY_RELOCS
12856 && h->elf.dynindx != -1
12857 && !h->elf.non_got_ref
12858 && !h->elf.def_regular)
12861 ? h->elf.type == STT_GNU_IFUNC
12862 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
12864 bfd_boolean skip, relocate;
12868 /* When generating a dynamic object, these relocations
12869 are copied into the output file to be resolved at run
12875 out_off = _bfd_elf_section_offset (output_bfd, info,
12876 input_section, rel->r_offset);
12877 if (out_off == (bfd_vma) -1)
12879 else if (out_off == (bfd_vma) -2)
12880 skip = TRUE, relocate = TRUE;
12881 out_off += (input_section->output_section->vma
12882 + input_section->output_offset);
12883 outrel.r_offset = out_off;
12884 outrel.r_addend = rel->r_addend;
12886 /* Optimize unaligned reloc use. */
12887 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
12888 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
12889 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
12890 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
12891 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
12892 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
12893 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
12894 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
12895 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
12898 memset (&outrel, 0, sizeof outrel);
12899 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
12901 && r_type != R_PPC64_TOC)
12902 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
12905 /* This symbol is local, or marked to become local,
12906 or this is an opd section reloc which must point
12907 at a local function. */
12908 outrel.r_addend += relocation;
12909 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
12911 if (is_opd && h != NULL)
12913 /* Lie about opd entries. This case occurs
12914 when building shared libraries and we
12915 reference a function in another shared
12916 lib. The same thing happens for a weak
12917 definition in an application that's
12918 overridden by a strong definition in a
12919 shared lib. (I believe this is a generic
12920 bug in binutils handling of weak syms.)
12921 In these cases we won't use the opd
12922 entry in this lib. */
12923 unresolved_reloc = FALSE;
12926 && r_type == R_PPC64_ADDR64
12928 ? h->elf.type == STT_GNU_IFUNC
12929 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
12930 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12933 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12935 /* We need to relocate .opd contents for ld.so.
12936 Prelink also wants simple and consistent rules
12937 for relocs. This make all RELATIVE relocs have
12938 *r_offset equal to r_addend. */
12947 ? h->elf.type == STT_GNU_IFUNC
12948 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
12950 (*_bfd_error_handler)
12951 (_("%B(%A+0x%lx): relocation %s for indirect "
12952 "function %s unsupported"),
12955 (long) rel->r_offset,
12956 ppc64_elf_howto_table[r_type]->name,
12960 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
12962 else if (sec == NULL || sec->owner == NULL)
12964 bfd_set_error (bfd_error_bad_value);
12971 osec = sec->output_section;
12972 indx = elf_section_data (osec)->dynindx;
12976 if ((osec->flags & SEC_READONLY) == 0
12977 && htab->elf.data_index_section != NULL)
12978 osec = htab->elf.data_index_section;
12980 osec = htab->elf.text_index_section;
12981 indx = elf_section_data (osec)->dynindx;
12983 BFD_ASSERT (indx != 0);
12985 /* We are turning this relocation into one
12986 against a section symbol, so subtract out
12987 the output section's address but not the
12988 offset of the input section in the output
12990 outrel.r_addend -= osec->vma;
12993 outrel.r_info = ELF64_R_INFO (indx, r_type);
12997 sreloc = elf_section_data (input_section)->sreloc;
12998 if (!htab->elf.dynamic_sections_created)
12999 sreloc = htab->reliplt;
13000 if (sreloc == NULL)
13003 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13006 loc = sreloc->contents;
13007 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13008 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13010 /* If this reloc is against an external symbol, it will
13011 be computed at runtime, so there's no need to do
13012 anything now. However, for the sake of prelink ensure
13013 that the section contents are a known value. */
13016 unresolved_reloc = FALSE;
13017 /* The value chosen here is quite arbitrary as ld.so
13018 ignores section contents except for the special
13019 case of .opd where the contents might be accessed
13020 before relocation. Choose zero, as that won't
13021 cause reloc overflow. */
13024 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13025 to improve backward compatibility with older
13027 if (r_type == R_PPC64_ADDR64)
13028 addend = outrel.r_addend;
13029 /* Adjust pc_relative relocs to have zero in *r_offset. */
13030 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13031 addend = (input_section->output_section->vma
13032 + input_section->output_offset
13039 case R_PPC64_GLOB_DAT:
13040 case R_PPC64_JMP_SLOT:
13041 case R_PPC64_JMP_IREL:
13042 case R_PPC64_RELATIVE:
13043 /* We shouldn't ever see these dynamic relocs in relocatable
13045 /* Fall through. */
13047 case R_PPC64_PLTGOT16:
13048 case R_PPC64_PLTGOT16_DS:
13049 case R_PPC64_PLTGOT16_HA:
13050 case R_PPC64_PLTGOT16_HI:
13051 case R_PPC64_PLTGOT16_LO:
13052 case R_PPC64_PLTGOT16_LO_DS:
13053 case R_PPC64_PLTREL32:
13054 case R_PPC64_PLTREL64:
13055 /* These ones haven't been implemented yet. */
13057 (*_bfd_error_handler)
13058 (_("%B: relocation %s is not supported for symbol %s."),
13060 ppc64_elf_howto_table[r_type]->name, sym_name);
13062 bfd_set_error (bfd_error_invalid_operation);
13067 /* Multi-instruction sequences that access the TOC can be
13068 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13069 to nop; addi rb,r2,x; */
13075 case R_PPC64_GOT_TLSLD16_HI:
13076 case R_PPC64_GOT_TLSGD16_HI:
13077 case R_PPC64_GOT_TPREL16_HI:
13078 case R_PPC64_GOT_DTPREL16_HI:
13079 case R_PPC64_GOT16_HI:
13080 case R_PPC64_TOC16_HI:
13081 /* These relocs would only be useful if building up an
13082 offset to later add to r2, perhaps in an indexed
13083 addressing mode instruction. Don't try to optimize.
13084 Unfortunately, the possibility of someone building up an
13085 offset like this or even with the HA relocs, means that
13086 we need to check the high insn when optimizing the low
13090 case R_PPC64_GOT_TLSLD16_HA:
13091 case R_PPC64_GOT_TLSGD16_HA:
13092 case R_PPC64_GOT_TPREL16_HA:
13093 case R_PPC64_GOT_DTPREL16_HA:
13094 case R_PPC64_GOT16_HA:
13095 case R_PPC64_TOC16_HA:
13096 /* nop is done later. */
13099 case R_PPC64_GOT_TLSLD16_LO:
13100 case R_PPC64_GOT_TLSGD16_LO:
13101 case R_PPC64_GOT_TPREL16_LO_DS:
13102 case R_PPC64_GOT_DTPREL16_LO_DS:
13103 case R_PPC64_GOT16_LO:
13104 case R_PPC64_GOT16_LO_DS:
13105 case R_PPC64_TOC16_LO:
13106 case R_PPC64_TOC16_LO_DS:
13107 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000)
13109 bfd_byte *p = contents + (rel->r_offset & ~3);
13110 insn = bfd_get_32 (input_bfd, p);
13111 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
13112 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
13113 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
13114 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
13115 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
13116 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
13117 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
13118 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
13119 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
13120 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
13121 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
13122 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
13123 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
13124 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
13125 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
13126 && (insn & 3) != 1)
13127 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
13128 && ((insn & 3) == 0 || (insn & 3) == 3)))
13130 unsigned int reg = (insn >> 16) & 0x1f;
13131 const Elf_Internal_Rela *ha;
13132 bfd_boolean match_addend;
13134 match_addend = (sym != NULL
13135 && ELF_ST_TYPE (sym->st_info) == STT_SECTION);
13136 ha = ha_reloc_match (relocs, rel, ®, match_addend,
13137 input_bfd, contents);
13140 insn &= ~(0x1f << 16);
13142 bfd_put_32 (input_bfd, insn, p);
13143 if (ha_opt == NULL)
13145 ha_opt = bfd_zmalloc (input_section->reloc_count);
13146 if (ha_opt == NULL)
13149 ha_opt[ha - relocs] = 1;
13152 /* If we don't find a matching high part insn,
13153 something is fishy. Refuse to nop any high
13154 part insn in this section. */
13161 /* Do any further special processing. */
13167 case R_PPC64_ADDR16_HA:
13168 case R_PPC64_REL16_HA:
13169 case R_PPC64_ADDR16_HIGHERA:
13170 case R_PPC64_ADDR16_HIGHESTA:
13171 case R_PPC64_TOC16_HA:
13172 case R_PPC64_SECTOFF_HA:
13173 case R_PPC64_TPREL16_HA:
13174 case R_PPC64_DTPREL16_HA:
13175 case R_PPC64_TPREL16_HIGHER:
13176 case R_PPC64_TPREL16_HIGHERA:
13177 case R_PPC64_TPREL16_HIGHEST:
13178 case R_PPC64_TPREL16_HIGHESTA:
13179 case R_PPC64_DTPREL16_HIGHER:
13180 case R_PPC64_DTPREL16_HIGHERA:
13181 case R_PPC64_DTPREL16_HIGHEST:
13182 case R_PPC64_DTPREL16_HIGHESTA:
13183 /* It's just possible that this symbol is a weak symbol
13184 that's not actually defined anywhere. In that case,
13185 'sec' would be NULL, and we should leave the symbol
13186 alone (it will be set to zero elsewhere in the link). */
13191 case R_PPC64_GOT16_HA:
13192 case R_PPC64_PLTGOT16_HA:
13193 case R_PPC64_PLT16_HA:
13194 case R_PPC64_GOT_TLSGD16_HA:
13195 case R_PPC64_GOT_TLSLD16_HA:
13196 case R_PPC64_GOT_TPREL16_HA:
13197 case R_PPC64_GOT_DTPREL16_HA:
13198 /* Add 0x10000 if sign bit in 0:15 is set.
13199 Bits 0:15 are not used. */
13203 case R_PPC64_ADDR16_DS:
13204 case R_PPC64_ADDR16_LO_DS:
13205 case R_PPC64_GOT16_DS:
13206 case R_PPC64_GOT16_LO_DS:
13207 case R_PPC64_PLT16_LO_DS:
13208 case R_PPC64_SECTOFF_DS:
13209 case R_PPC64_SECTOFF_LO_DS:
13210 case R_PPC64_TOC16_DS:
13211 case R_PPC64_TOC16_LO_DS:
13212 case R_PPC64_PLTGOT16_DS:
13213 case R_PPC64_PLTGOT16_LO_DS:
13214 case R_PPC64_GOT_TPREL16_DS:
13215 case R_PPC64_GOT_TPREL16_LO_DS:
13216 case R_PPC64_GOT_DTPREL16_DS:
13217 case R_PPC64_GOT_DTPREL16_LO_DS:
13218 case R_PPC64_TPREL16_DS:
13219 case R_PPC64_TPREL16_LO_DS:
13220 case R_PPC64_DTPREL16_DS:
13221 case R_PPC64_DTPREL16_LO_DS:
13222 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13224 /* If this reloc is against an lq insn, then the value must be
13225 a multiple of 16. This is somewhat of a hack, but the
13226 "correct" way to do this by defining _DQ forms of all the
13227 _DS relocs bloats all reloc switches in this file. It
13228 doesn't seem to make much sense to use any of these relocs
13229 in data, so testing the insn should be safe. */
13230 if ((insn & (0x3f << 26)) == (56u << 26))
13232 if (((relocation + addend) & mask) != 0)
13234 (*_bfd_error_handler)
13235 (_("%B(%A+0x%lx): error: %s not a multiple of %u"),
13236 input_bfd, input_section, (long) rel->r_offset,
13237 ppc64_elf_howto_table[r_type]->name,
13239 bfd_set_error (bfd_error_bad_value);
13246 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13247 because such sections are not SEC_ALLOC and thus ld.so will
13248 not process them. */
13249 if (unresolved_reloc
13250 && !((input_section->flags & SEC_DEBUGGING) != 0
13251 && h->elf.def_dynamic))
13253 (*_bfd_error_handler)
13254 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
13257 (long) rel->r_offset,
13258 ppc64_elf_howto_table[(int) r_type]->name,
13259 h->elf.root.root.string);
13263 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
13271 if (r != bfd_reloc_ok)
13273 if (sym_name == NULL)
13274 sym_name = "(null)";
13275 if (r == bfd_reloc_overflow)
13280 && h->elf.root.type == bfd_link_hash_undefweak
13281 && ppc64_elf_howto_table[r_type]->pc_relative)
13283 /* Assume this is a call protected by other code that
13284 detects the symbol is undefined. If this is the case,
13285 we can safely ignore the overflow. If not, the
13286 program is hosed anyway, and a little warning isn't
13292 if (!((*info->callbacks->reloc_overflow)
13293 (info, (h ? &h->elf.root : NULL), sym_name,
13294 ppc64_elf_howto_table[r_type]->name,
13295 orig_addend, input_bfd, input_section, rel->r_offset)))
13300 (*_bfd_error_handler)
13301 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
13304 (long) rel->r_offset,
13305 ppc64_elf_howto_table[r_type]->name,
13313 if (ha_opt != NULL)
13317 unsigned char *opt = ha_opt;
13319 relend = relocs + input_section->reloc_count;
13320 for (; rel < relend; opt++, rel++)
13323 bfd_byte *p = contents + (rel->r_offset & ~3);
13324 bfd_put_32 (input_bfd, NOP, p);
13330 /* If we're emitting relocations, then shortly after this function
13331 returns, reloc offsets and addends for this section will be
13332 adjusted. Worse, reloc symbol indices will be for the output
13333 file rather than the input. Save a copy of the relocs for
13334 opd_entry_value. */
13335 if (is_opd && (info->emitrelocations || info->relocatable))
13338 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13339 rel = bfd_alloc (input_bfd, amt);
13340 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13341 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13344 memcpy (rel, relocs, amt);
13349 /* Adjust the value of any local symbols in opd sections. */
13352 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13353 const char *name ATTRIBUTE_UNUSED,
13354 Elf_Internal_Sym *elfsym,
13355 asection *input_sec,
13356 struct elf_link_hash_entry *h)
13358 struct _opd_sec_data *opd;
13365 opd = get_opd_info (input_sec);
13366 if (opd == NULL || opd->adjust == NULL)
13369 value = elfsym->st_value - input_sec->output_offset;
13370 if (!info->relocatable)
13371 value -= input_sec->output_section->vma;
13373 adjust = opd->adjust[value / 8];
13377 elfsym->st_value += adjust;
13381 /* Finish up dynamic symbol handling. We set the contents of various
13382 dynamic sections here. */
13385 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13386 struct bfd_link_info *info,
13387 struct elf_link_hash_entry *h,
13388 Elf_Internal_Sym *sym)
13390 struct ppc_link_hash_table *htab;
13391 struct plt_entry *ent;
13392 Elf_Internal_Rela rela;
13395 htab = ppc_hash_table (info);
13399 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13400 if (ent->plt.offset != (bfd_vma) -1)
13402 /* This symbol has an entry in the procedure linkage
13403 table. Set it up. */
13404 if (!htab->elf.dynamic_sections_created
13405 || h->dynindx == -1)
13407 BFD_ASSERT (h->type == STT_GNU_IFUNC
13409 && (h->root.type == bfd_link_hash_defined
13410 || h->root.type == bfd_link_hash_defweak));
13411 rela.r_offset = (htab->iplt->output_section->vma
13412 + htab->iplt->output_offset
13413 + ent->plt.offset);
13414 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13415 rela.r_addend = (h->root.u.def.value
13416 + h->root.u.def.section->output_offset
13417 + h->root.u.def.section->output_section->vma
13419 loc = (htab->reliplt->contents
13420 + (htab->reliplt->reloc_count++
13421 * sizeof (Elf64_External_Rela)));
13425 rela.r_offset = (htab->plt->output_section->vma
13426 + htab->plt->output_offset
13427 + ent->plt.offset);
13428 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13429 rela.r_addend = ent->addend;
13430 loc = (htab->relplt->contents
13431 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13432 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
13434 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13439 /* This symbol needs a copy reloc. Set it up. */
13441 if (h->dynindx == -1
13442 || (h->root.type != bfd_link_hash_defined
13443 && h->root.type != bfd_link_hash_defweak)
13444 || htab->relbss == NULL)
13447 rela.r_offset = (h->root.u.def.value
13448 + h->root.u.def.section->output_section->vma
13449 + h->root.u.def.section->output_offset);
13450 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13452 loc = htab->relbss->contents;
13453 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
13454 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13457 /* Mark some specially defined symbols as absolute. */
13458 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
13459 sym->st_shndx = SHN_ABS;
13464 /* Used to decide how to sort relocs in an optimal manner for the
13465 dynamic linker, before writing them out. */
13467 static enum elf_reloc_type_class
13468 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
13470 enum elf_ppc64_reloc_type r_type;
13472 r_type = ELF64_R_TYPE (rela->r_info);
13475 case R_PPC64_RELATIVE:
13476 return reloc_class_relative;
13477 case R_PPC64_JMP_SLOT:
13478 return reloc_class_plt;
13480 return reloc_class_copy;
13482 return reloc_class_normal;
13486 /* Finish up the dynamic sections. */
13489 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
13490 struct bfd_link_info *info)
13492 struct ppc_link_hash_table *htab;
13496 htab = ppc_hash_table (info);
13500 dynobj = htab->elf.dynobj;
13501 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
13503 if (htab->elf.dynamic_sections_created)
13505 Elf64_External_Dyn *dyncon, *dynconend;
13507 if (sdyn == NULL || htab->got == NULL)
13510 dyncon = (Elf64_External_Dyn *) sdyn->contents;
13511 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
13512 for (; dyncon < dynconend; dyncon++)
13514 Elf_Internal_Dyn dyn;
13517 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
13524 case DT_PPC64_GLINK:
13526 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13527 /* We stupidly defined DT_PPC64_GLINK to be the start
13528 of glink rather than the first entry point, which is
13529 what ld.so needs, and now have a bigger stub to
13530 support automatic multiple TOCs. */
13531 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
13535 s = bfd_get_section_by_name (output_bfd, ".opd");
13538 dyn.d_un.d_ptr = s->vma;
13541 case DT_PPC64_OPDSZ:
13542 s = bfd_get_section_by_name (output_bfd, ".opd");
13545 dyn.d_un.d_val = s->size;
13550 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13555 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13559 dyn.d_un.d_val = htab->relplt->size;
13563 /* Don't count procedure linkage table relocs in the
13564 overall reloc count. */
13568 dyn.d_un.d_val -= s->size;
13572 /* We may not be using the standard ELF linker script.
13573 If .rela.plt is the first .rela section, we adjust
13574 DT_RELA to not include it. */
13578 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
13580 dyn.d_un.d_ptr += s->size;
13584 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
13588 if (htab->got != NULL && htab->got->size != 0)
13590 /* Fill in the first entry in the global offset table.
13591 We use it to hold the link-time TOCbase. */
13592 bfd_put_64 (output_bfd,
13593 elf_gp (output_bfd) + TOC_BASE_OFF,
13594 htab->got->contents);
13596 /* Set .got entry size. */
13597 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
13600 if (htab->plt != NULL && htab->plt->size != 0)
13602 /* Set .plt entry size. */
13603 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
13607 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13608 brlt ourselves if emitrelocations. */
13609 if (htab->brlt != NULL
13610 && htab->brlt->reloc_count != 0
13611 && !_bfd_elf_link_output_relocs (output_bfd,
13613 elf_section_data (htab->brlt)->rela.hdr,
13614 elf_section_data (htab->brlt)->relocs,
13618 if (htab->glink != NULL
13619 && htab->glink->reloc_count != 0
13620 && !_bfd_elf_link_output_relocs (output_bfd,
13622 elf_section_data (htab->glink)->rela.hdr,
13623 elf_section_data (htab->glink)->relocs,
13627 /* We need to handle writing out multiple GOT sections ourselves,
13628 since we didn't add them to DYNOBJ. We know dynobj is the first
13630 while ((dynobj = dynobj->link_next) != NULL)
13634 if (!is_ppc64_elf (dynobj))
13637 s = ppc64_elf_tdata (dynobj)->got;
13640 && s->output_section != bfd_abs_section_ptr
13641 && !bfd_set_section_contents (output_bfd, s->output_section,
13642 s->contents, s->output_offset,
13645 s = ppc64_elf_tdata (dynobj)->relgot;
13648 && s->output_section != bfd_abs_section_ptr
13649 && !bfd_set_section_contents (output_bfd, s->output_section,
13650 s->contents, s->output_offset,
13658 #include "elf64-target.h"