1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 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_MACHINE_CODE EM_PPC64
65 #define ELF_MAXPAGESIZE 0x10000
66 #define ELF_COMMONPAGESIZE 0x1000
67 #define elf_info_to_howto ppc64_elf_info_to_howto
69 #define elf_backend_want_got_sym 0
70 #define elf_backend_want_plt_sym 0
71 #define elf_backend_plt_alignment 3
72 #define elf_backend_plt_not_loaded 1
73 #define elf_backend_got_header_size 8
74 #define elf_backend_can_gc_sections 1
75 #define elf_backend_can_refcount 1
76 #define elf_backend_rela_normal 1
77 #define elf_backend_default_execstack 0
79 #define bfd_elf64_mkobject ppc64_elf_mkobject
80 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
81 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
82 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
86 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define elf_backend_object_p ppc64_elf_object_p
89 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
91 #define elf_backend_write_core_note ppc64_elf_write_core_note
92 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
94 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
95 #define elf_backend_check_directives ppc64_elf_process_dot_syms
96 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
97 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
98 #define elf_backend_check_relocs ppc64_elf_check_relocs
99 #define elf_backend_gc_keep ppc64_elf_gc_keep
100 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
101 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
102 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
103 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
104 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
105 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
106 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
107 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
108 #define elf_backend_action_discarded ppc64_elf_action_discarded
109 #define elf_backend_relocate_section ppc64_elf_relocate_section
110 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
111 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
112 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
113 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
114 #define elf_backend_special_sections ppc64_elf_special_sections
115 #define elf_backend_post_process_headers _bfd_elf_set_osabi
117 /* The name of the dynamic interpreter. This is put in the .interp
119 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
121 /* The size in bytes of an entry in the procedure linkage table. */
122 #define PLT_ENTRY_SIZE 24
124 /* The initial size of the plt reserved for the dynamic linker. */
125 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
127 /* TOC base pointers offset from start of TOC. */
128 #define TOC_BASE_OFF 0x8000
130 /* Offset of tp and dtp pointers from start of TLS block. */
131 #define TP_OFFSET 0x7000
132 #define DTP_OFFSET 0x8000
134 /* .plt call stub instructions. The normal stub is like this, but
135 sometimes the .plt entry crosses a 64k boundary and we need to
136 insert an addi to adjust r12. */
137 #define PLT_CALL_STUB_SIZE (7*4)
138 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
139 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
140 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
141 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
142 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
143 /* ld %r11,xxx+16@l(%r12) */
144 #define BCTR 0x4e800420 /* bctr */
147 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
148 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
149 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
150 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
152 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
153 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
155 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
157 /* glink call stub instructions. We enter with the index in R0. */
158 #define GLINK_CALL_STUB_SIZE (16*4)
162 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
163 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
165 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
166 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
167 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
168 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
176 #define NOP 0x60000000
178 /* Some other nops. */
179 #define CROR_151515 0x4def7b82
180 #define CROR_313131 0x4ffffb82
182 /* .glink entries for the first 32k functions are two instructions. */
183 #define LI_R0_0 0x38000000 /* li %r0,0 */
184 #define B_DOT 0x48000000 /* b . */
186 /* After that, we need two instructions to load the index, followed by
188 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
189 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
191 /* Instructions used by the save and restore reg functions. */
192 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
193 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
194 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
195 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
196 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
197 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
198 #define LI_R12_0 0x39800000 /* li %r12,0 */
199 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
200 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
201 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
202 #define BLR 0x4e800020 /* blr */
204 /* Since .opd is an array of descriptors and each entry will end up
205 with identical R_PPC64_RELATIVE relocs, there is really no need to
206 propagate .opd relocs; The dynamic linker should be taught to
207 relocate .opd without reloc entries. */
208 #ifndef NO_OPD_RELOCS
209 #define NO_OPD_RELOCS 0
212 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
214 /* Relocation HOWTO's. */
215 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
217 static reloc_howto_type ppc64_elf_howto_raw[] = {
218 /* This reloc does nothing. */
219 HOWTO (R_PPC64_NONE, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE, /* pc_relative */
225 complain_overflow_dont, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_NONE", /* name */
228 FALSE, /* partial_inplace */
231 FALSE), /* pcrel_offset */
233 /* A standard 32 bit relocation. */
234 HOWTO (R_PPC64_ADDR32, /* type */
236 2, /* size (0 = byte, 1 = short, 2 = long) */
238 FALSE, /* pc_relative */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC64_ADDR32", /* name */
243 FALSE, /* partial_inplace */
245 0xffffffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
248 /* An absolute 26 bit branch; the lower two bits must be zero.
249 FIXME: we don't check that, we just clear them. */
250 HOWTO (R_PPC64_ADDR24, /* type */
252 2, /* size (0 = byte, 1 = short, 2 = long) */
254 FALSE, /* pc_relative */
256 complain_overflow_bitfield, /* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR24", /* name */
259 FALSE, /* partial_inplace */
261 0x03fffffc, /* dst_mask */
262 FALSE), /* pcrel_offset */
264 /* A standard 16 bit relocation. */
265 HOWTO (R_PPC64_ADDR16, /* type */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
269 FALSE, /* pc_relative */
271 complain_overflow_bitfield, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_ADDR16", /* name */
274 FALSE, /* partial_inplace */
276 0xffff, /* dst_mask */
277 FALSE), /* pcrel_offset */
279 /* A 16 bit relocation without overflow. */
280 HOWTO (R_PPC64_ADDR16_LO, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE, /* pc_relative */
286 complain_overflow_dont,/* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR16_LO", /* name */
289 FALSE, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* Bits 16-31 of an address. */
295 HOWTO (R_PPC64_ADDR16_HI, /* type */
297 1, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE, /* pc_relative */
301 complain_overflow_dont, /* complain_on_overflow */
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC64_ADDR16_HI", /* name */
304 FALSE, /* partial_inplace */
306 0xffff, /* dst_mask */
307 FALSE), /* pcrel_offset */
309 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
310 bits, treated as a signed number, is negative. */
311 HOWTO (R_PPC64_ADDR16_HA, /* type */
313 1, /* size (0 = byte, 1 = short, 2 = long) */
315 FALSE, /* pc_relative */
317 complain_overflow_dont, /* complain_on_overflow */
318 ppc64_elf_ha_reloc, /* special_function */
319 "R_PPC64_ADDR16_HA", /* name */
320 FALSE, /* partial_inplace */
322 0xffff, /* dst_mask */
323 FALSE), /* pcrel_offset */
325 /* An absolute 16 bit branch; the lower two bits must be zero.
326 FIXME: we don't check that, we just clear them. */
327 HOWTO (R_PPC64_ADDR14, /* type */
329 2, /* size (0 = byte, 1 = short, 2 = long) */
331 FALSE, /* pc_relative */
333 complain_overflow_bitfield, /* complain_on_overflow */
334 ppc64_elf_branch_reloc, /* special_function */
335 "R_PPC64_ADDR14", /* name */
336 FALSE, /* partial_inplace */
338 0x0000fffc, /* dst_mask */
339 FALSE), /* pcrel_offset */
341 /* An absolute 16 bit branch, for which bit 10 should be set to
342 indicate that the branch is expected to be taken. The lower two
343 bits must be zero. */
344 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 FALSE, /* pc_relative */
350 complain_overflow_bitfield, /* complain_on_overflow */
351 ppc64_elf_brtaken_reloc, /* special_function */
352 "R_PPC64_ADDR14_BRTAKEN",/* name */
353 FALSE, /* partial_inplace */
355 0x0000fffc, /* dst_mask */
356 FALSE), /* pcrel_offset */
358 /* An absolute 16 bit branch, for which bit 10 should be set to
359 indicate that the branch is not expected to be taken. The lower
360 two bits must be zero. */
361 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 FALSE, /* pc_relative */
367 complain_overflow_bitfield, /* complain_on_overflow */
368 ppc64_elf_brtaken_reloc, /* special_function */
369 "R_PPC64_ADDR14_BRNTAKEN",/* name */
370 FALSE, /* partial_inplace */
372 0x0000fffc, /* dst_mask */
373 FALSE), /* pcrel_offset */
375 /* A relative 26 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL24, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE, /* pc_relative */
382 complain_overflow_signed, /* complain_on_overflow */
383 ppc64_elf_branch_reloc, /* special_function */
384 "R_PPC64_REL24", /* name */
385 FALSE, /* partial_inplace */
387 0x03fffffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
390 /* A relative 16 bit branch; the lower two bits must be zero. */
391 HOWTO (R_PPC64_REL14, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 TRUE, /* pc_relative */
397 complain_overflow_signed, /* complain_on_overflow */
398 ppc64_elf_branch_reloc, /* special_function */
399 "R_PPC64_REL14", /* name */
400 FALSE, /* partial_inplace */
402 0x0000fffc, /* dst_mask */
403 TRUE), /* pcrel_offset */
405 /* A relative 16 bit branch. Bit 10 should be set to indicate that
406 the branch is expected to be taken. The lower two bits must be
408 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 TRUE, /* pc_relative */
414 complain_overflow_signed, /* complain_on_overflow */
415 ppc64_elf_brtaken_reloc, /* special_function */
416 "R_PPC64_REL14_BRTAKEN", /* name */
417 FALSE, /* partial_inplace */
419 0x0000fffc, /* dst_mask */
420 TRUE), /* pcrel_offset */
422 /* A relative 16 bit branch. Bit 10 should be set to indicate that
423 the branch is not expected to be taken. The lower two bits must
425 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
427 2, /* size (0 = byte, 1 = short, 2 = long) */
429 TRUE, /* pc_relative */
431 complain_overflow_signed, /* complain_on_overflow */
432 ppc64_elf_brtaken_reloc, /* special_function */
433 "R_PPC64_REL14_BRNTAKEN",/* name */
434 FALSE, /* partial_inplace */
436 0x0000fffc, /* dst_mask */
437 TRUE), /* pcrel_offset */
439 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
441 HOWTO (R_PPC64_GOT16, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE, /* pc_relative */
447 complain_overflow_signed, /* complain_on_overflow */
448 ppc64_elf_unhandled_reloc, /* special_function */
449 "R_PPC64_GOT16", /* name */
450 FALSE, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
455 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
457 HOWTO (R_PPC64_GOT16_LO, /* type */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE, /* pc_relative */
463 complain_overflow_dont, /* complain_on_overflow */
464 ppc64_elf_unhandled_reloc, /* special_function */
465 "R_PPC64_GOT16_LO", /* name */
466 FALSE, /* partial_inplace */
468 0xffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
471 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
473 HOWTO (R_PPC64_GOT16_HI, /* type */
475 1, /* size (0 = byte, 1 = short, 2 = long) */
477 FALSE, /* pc_relative */
479 complain_overflow_dont,/* complain_on_overflow */
480 ppc64_elf_unhandled_reloc, /* special_function */
481 "R_PPC64_GOT16_HI", /* name */
482 FALSE, /* partial_inplace */
484 0xffff, /* dst_mask */
485 FALSE), /* pcrel_offset */
487 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
489 HOWTO (R_PPC64_GOT16_HA, /* type */
491 1, /* size (0 = byte, 1 = short, 2 = long) */
493 FALSE, /* pc_relative */
495 complain_overflow_dont,/* complain_on_overflow */
496 ppc64_elf_unhandled_reloc, /* special_function */
497 "R_PPC64_GOT16_HA", /* name */
498 FALSE, /* partial_inplace */
500 0xffff, /* dst_mask */
501 FALSE), /* pcrel_offset */
503 /* This is used only by the dynamic linker. The symbol should exist
504 both in the object being run and in some shared library. The
505 dynamic linker copies the data addressed by the symbol from the
506 shared library into the object, because the object being
507 run has to have the data at some particular address. */
508 HOWTO (R_PPC64_COPY, /* type */
510 0, /* this one is variable size */
512 FALSE, /* pc_relative */
514 complain_overflow_dont, /* complain_on_overflow */
515 ppc64_elf_unhandled_reloc, /* special_function */
516 "R_PPC64_COPY", /* name */
517 FALSE, /* partial_inplace */
520 FALSE), /* pcrel_offset */
522 /* Like R_PPC64_ADDR64, but used when setting global offset table
524 HOWTO (R_PPC64_GLOB_DAT, /* type */
526 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
528 FALSE, /* pc_relative */
530 complain_overflow_dont, /* complain_on_overflow */
531 ppc64_elf_unhandled_reloc, /* special_function */
532 "R_PPC64_GLOB_DAT", /* name */
533 FALSE, /* partial_inplace */
535 ONES (64), /* dst_mask */
536 FALSE), /* pcrel_offset */
538 /* Created by the link editor. Marks a procedure linkage table
539 entry for a symbol. */
540 HOWTO (R_PPC64_JMP_SLOT, /* type */
542 0, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE, /* pc_relative */
546 complain_overflow_dont, /* complain_on_overflow */
547 ppc64_elf_unhandled_reloc, /* special_function */
548 "R_PPC64_JMP_SLOT", /* name */
549 FALSE, /* partial_inplace */
552 FALSE), /* pcrel_offset */
554 /* Used only by the dynamic linker. When the object is run, this
555 doubleword64 is set to the load address of the object, plus the
557 HOWTO (R_PPC64_RELATIVE, /* type */
559 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
561 FALSE, /* pc_relative */
563 complain_overflow_dont, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC64_RELATIVE", /* name */
566 FALSE, /* partial_inplace */
568 ONES (64), /* dst_mask */
569 FALSE), /* pcrel_offset */
571 /* Like R_PPC64_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR32, /* type */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
576 FALSE, /* pc_relative */
578 complain_overflow_bitfield, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC64_UADDR32", /* name */
581 FALSE, /* partial_inplace */
583 0xffffffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
586 /* Like R_PPC64_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC64_UADDR16, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE, /* pc_relative */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC64_UADDR16", /* name */
596 FALSE, /* partial_inplace */
598 0xffff, /* dst_mask */
599 FALSE), /* pcrel_offset */
601 /* 32-bit PC relative. */
602 HOWTO (R_PPC64_REL32, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE, /* pc_relative */
608 /* FIXME: Verify. Was complain_overflow_bitfield. */
609 complain_overflow_signed, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC64_REL32", /* name */
612 FALSE, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
617 /* 32-bit relocation to the symbol's procedure linkage table. */
618 HOWTO (R_PPC64_PLT32, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE, /* pc_relative */
624 complain_overflow_bitfield, /* complain_on_overflow */
625 ppc64_elf_unhandled_reloc, /* special_function */
626 "R_PPC64_PLT32", /* name */
627 FALSE, /* partial_inplace */
629 0xffffffff, /* dst_mask */
630 FALSE), /* pcrel_offset */
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: R_PPC64_PLTREL32 not supported. */
634 HOWTO (R_PPC64_PLTREL32, /* type */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
638 TRUE, /* pc_relative */
640 complain_overflow_signed, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC64_PLTREL32", /* name */
643 FALSE, /* partial_inplace */
645 0xffffffff, /* dst_mask */
646 TRUE), /* pcrel_offset */
648 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
650 HOWTO (R_PPC64_PLT16_LO, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE, /* pc_relative */
656 complain_overflow_dont, /* complain_on_overflow */
657 ppc64_elf_unhandled_reloc, /* special_function */
658 "R_PPC64_PLT16_LO", /* name */
659 FALSE, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
664 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
666 HOWTO (R_PPC64_PLT16_HI, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE, /* pc_relative */
672 complain_overflow_dont, /* complain_on_overflow */
673 ppc64_elf_unhandled_reloc, /* special_function */
674 "R_PPC64_PLT16_HI", /* name */
675 FALSE, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
680 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
682 HOWTO (R_PPC64_PLT16_HA, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE, /* pc_relative */
688 complain_overflow_dont, /* complain_on_overflow */
689 ppc64_elf_unhandled_reloc, /* special_function */
690 "R_PPC64_PLT16_HA", /* name */
691 FALSE, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
696 /* 16-bit section relative relocation. */
697 HOWTO (R_PPC64_SECTOFF, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE, /* pc_relative */
703 complain_overflow_bitfield, /* complain_on_overflow */
704 ppc64_elf_sectoff_reloc, /* special_function */
705 "R_PPC64_SECTOFF", /* name */
706 FALSE, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
711 /* Like R_PPC64_SECTOFF, but no overflow warning. */
712 HOWTO (R_PPC64_SECTOFF_LO, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE, /* pc_relative */
718 complain_overflow_dont, /* complain_on_overflow */
719 ppc64_elf_sectoff_reloc, /* special_function */
720 "R_PPC64_SECTOFF_LO", /* name */
721 FALSE, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
726 /* 16-bit upper half section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HI, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE, /* pc_relative */
733 complain_overflow_dont, /* complain_on_overflow */
734 ppc64_elf_sectoff_reloc, /* special_function */
735 "R_PPC64_SECTOFF_HI", /* name */
736 FALSE, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE), /* pcrel_offset */
741 /* 16-bit upper half adjusted section relative relocation. */
742 HOWTO (R_PPC64_SECTOFF_HA, /* type */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
746 FALSE, /* pc_relative */
748 complain_overflow_dont, /* complain_on_overflow */
749 ppc64_elf_sectoff_ha_reloc, /* special_function */
750 "R_PPC64_SECTOFF_HA", /* name */
751 FALSE, /* partial_inplace */
753 0xffff, /* dst_mask */
754 FALSE), /* pcrel_offset */
756 /* Like R_PPC64_REL24 without touching the two least significant bits. */
757 HOWTO (R_PPC64_REL30, /* type */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
761 TRUE, /* pc_relative */
763 complain_overflow_dont, /* complain_on_overflow */
764 bfd_elf_generic_reloc, /* special_function */
765 "R_PPC64_REL30", /* name */
766 FALSE, /* partial_inplace */
768 0xfffffffc, /* dst_mask */
769 TRUE), /* pcrel_offset */
771 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
773 /* A standard 64-bit relocation. */
774 HOWTO (R_PPC64_ADDR64, /* type */
776 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
778 FALSE, /* pc_relative */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC64_ADDR64", /* name */
783 FALSE, /* partial_inplace */
785 ONES (64), /* dst_mask */
786 FALSE), /* pcrel_offset */
788 /* The bits 32-47 of an address. */
789 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
791 1, /* size (0 = byte, 1 = short, 2 = long) */
793 FALSE, /* pc_relative */
795 complain_overflow_dont, /* complain_on_overflow */
796 bfd_elf_generic_reloc, /* special_function */
797 "R_PPC64_ADDR16_HIGHER", /* name */
798 FALSE, /* partial_inplace */
800 0xffff, /* dst_mask */
801 FALSE), /* pcrel_offset */
803 /* The bits 32-47 of an address, plus 1 if the contents of the low
804 16 bits, treated as a signed number, is negative. */
805 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE, /* pc_relative */
811 complain_overflow_dont, /* complain_on_overflow */
812 ppc64_elf_ha_reloc, /* special_function */
813 "R_PPC64_ADDR16_HIGHERA", /* name */
814 FALSE, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE), /* pcrel_offset */
819 /* The bits 48-63 of an address. */
820 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
822 1, /* size (0 = byte, 1 = short, 2 = long) */
824 FALSE, /* pc_relative */
826 complain_overflow_dont, /* complain_on_overflow */
827 bfd_elf_generic_reloc, /* special_function */
828 "R_PPC64_ADDR16_HIGHEST", /* name */
829 FALSE, /* partial_inplace */
831 0xffff, /* dst_mask */
832 FALSE), /* pcrel_offset */
834 /* The bits 48-63 of an address, plus 1 if the contents of the low
835 16 bits, treated as a signed number, is negative. */
836 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
838 1, /* size (0 = byte, 1 = short, 2 = long) */
840 FALSE, /* pc_relative */
842 complain_overflow_dont, /* complain_on_overflow */
843 ppc64_elf_ha_reloc, /* special_function */
844 "R_PPC64_ADDR16_HIGHESTA", /* name */
845 FALSE, /* partial_inplace */
847 0xffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
850 /* Like ADDR64, but may be unaligned. */
851 HOWTO (R_PPC64_UADDR64, /* type */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 FALSE, /* pc_relative */
857 complain_overflow_dont, /* complain_on_overflow */
858 bfd_elf_generic_reloc, /* special_function */
859 "R_PPC64_UADDR64", /* name */
860 FALSE, /* partial_inplace */
862 ONES (64), /* dst_mask */
863 FALSE), /* pcrel_offset */
865 /* 64-bit relative relocation. */
866 HOWTO (R_PPC64_REL64, /* type */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 TRUE, /* pc_relative */
872 complain_overflow_dont, /* complain_on_overflow */
873 bfd_elf_generic_reloc, /* special_function */
874 "R_PPC64_REL64", /* name */
875 FALSE, /* partial_inplace */
877 ONES (64), /* dst_mask */
878 TRUE), /* pcrel_offset */
880 /* 64-bit relocation to the symbol's procedure linkage table. */
881 HOWTO (R_PPC64_PLT64, /* type */
883 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
885 FALSE, /* pc_relative */
887 complain_overflow_dont, /* complain_on_overflow */
888 ppc64_elf_unhandled_reloc, /* special_function */
889 "R_PPC64_PLT64", /* name */
890 FALSE, /* partial_inplace */
892 ONES (64), /* dst_mask */
893 FALSE), /* pcrel_offset */
895 /* 64-bit PC relative relocation to the symbol's procedure linkage
897 /* FIXME: R_PPC64_PLTREL64 not supported. */
898 HOWTO (R_PPC64_PLTREL64, /* type */
900 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
902 TRUE, /* pc_relative */
904 complain_overflow_dont, /* complain_on_overflow */
905 ppc64_elf_unhandled_reloc, /* special_function */
906 "R_PPC64_PLTREL64", /* name */
907 FALSE, /* partial_inplace */
909 ONES (64), /* dst_mask */
910 TRUE), /* pcrel_offset */
912 /* 16 bit TOC-relative relocation. */
914 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
915 HOWTO (R_PPC64_TOC16, /* type */
917 1, /* size (0 = byte, 1 = short, 2 = long) */
919 FALSE, /* pc_relative */
921 complain_overflow_signed, /* complain_on_overflow */
922 ppc64_elf_toc_reloc, /* special_function */
923 "R_PPC64_TOC16", /* name */
924 FALSE, /* partial_inplace */
926 0xffff, /* dst_mask */
927 FALSE), /* pcrel_offset */
929 /* 16 bit TOC-relative relocation without overflow. */
931 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
932 HOWTO (R_PPC64_TOC16_LO, /* type */
934 1, /* size (0 = byte, 1 = short, 2 = long) */
936 FALSE, /* pc_relative */
938 complain_overflow_dont, /* complain_on_overflow */
939 ppc64_elf_toc_reloc, /* special_function */
940 "R_PPC64_TOC16_LO", /* name */
941 FALSE, /* partial_inplace */
943 0xffff, /* dst_mask */
944 FALSE), /* pcrel_offset */
946 /* 16 bit TOC-relative relocation, high 16 bits. */
948 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
949 HOWTO (R_PPC64_TOC16_HI, /* type */
951 1, /* size (0 = byte, 1 = short, 2 = long) */
953 FALSE, /* pc_relative */
955 complain_overflow_dont, /* complain_on_overflow */
956 ppc64_elf_toc_reloc, /* special_function */
957 "R_PPC64_TOC16_HI", /* name */
958 FALSE, /* partial_inplace */
960 0xffff, /* dst_mask */
961 FALSE), /* pcrel_offset */
963 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
964 contents of the low 16 bits, treated as a signed number, is
967 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
968 HOWTO (R_PPC64_TOC16_HA, /* type */
970 1, /* size (0 = byte, 1 = short, 2 = long) */
972 FALSE, /* pc_relative */
974 complain_overflow_dont, /* complain_on_overflow */
975 ppc64_elf_toc_ha_reloc, /* special_function */
976 "R_PPC64_TOC16_HA", /* name */
977 FALSE, /* partial_inplace */
979 0xffff, /* dst_mask */
980 FALSE), /* pcrel_offset */
982 /* 64-bit relocation; insert value of TOC base (.TOC.). */
984 /* R_PPC64_TOC 51 doubleword64 .TOC. */
985 HOWTO (R_PPC64_TOC, /* type */
987 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
989 FALSE, /* pc_relative */
991 complain_overflow_bitfield, /* complain_on_overflow */
992 ppc64_elf_toc64_reloc, /* special_function */
993 "R_PPC64_TOC", /* name */
994 FALSE, /* partial_inplace */
996 ONES (64), /* dst_mask */
997 FALSE), /* pcrel_offset */
999 /* Like R_PPC64_GOT16, but also informs the link editor that the
1000 value to relocate may (!) refer to a PLT entry which the link
1001 editor (a) may replace with the symbol value. If the link editor
1002 is unable to fully resolve the symbol, it may (b) create a PLT
1003 entry and store the address to the new PLT entry in the GOT.
1004 This permits lazy resolution of function symbols at run time.
1005 The link editor may also skip all of this and just (c) emit a
1006 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1007 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1008 HOWTO (R_PPC64_PLTGOT16, /* type */
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 FALSE, /* pc_relative */
1014 complain_overflow_signed, /* complain_on_overflow */
1015 ppc64_elf_unhandled_reloc, /* special_function */
1016 "R_PPC64_PLTGOT16", /* name */
1017 FALSE, /* partial_inplace */
1019 0xffff, /* dst_mask */
1020 FALSE), /* pcrel_offset */
1022 /* Like R_PPC64_PLTGOT16, but without overflow. */
1023 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1024 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1026 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 FALSE, /* pc_relative */
1030 complain_overflow_dont, /* complain_on_overflow */
1031 ppc64_elf_unhandled_reloc, /* special_function */
1032 "R_PPC64_PLTGOT16_LO", /* name */
1033 FALSE, /* partial_inplace */
1035 0xffff, /* dst_mask */
1036 FALSE), /* pcrel_offset */
1038 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1039 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1040 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1041 16, /* rightshift */
1042 1, /* size (0 = byte, 1 = short, 2 = long) */
1044 FALSE, /* pc_relative */
1046 complain_overflow_dont, /* complain_on_overflow */
1047 ppc64_elf_unhandled_reloc, /* special_function */
1048 "R_PPC64_PLTGOT16_HI", /* name */
1049 FALSE, /* partial_inplace */
1051 0xffff, /* dst_mask */
1052 FALSE), /* pcrel_offset */
1054 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1055 1 if the contents of the low 16 bits, treated as a signed number,
1057 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1058 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1059 16, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE, /* pc_relative */
1064 complain_overflow_dont,/* complain_on_overflow */
1065 ppc64_elf_unhandled_reloc, /* special_function */
1066 "R_PPC64_PLTGOT16_HA", /* name */
1067 FALSE, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1072 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_DS, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_bitfield, /* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_ADDR16_DS", /* name */
1082 FALSE, /* partial_inplace */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE, /* pc_relative */
1094 complain_overflow_dont,/* complain_on_overflow */
1095 bfd_elf_generic_reloc, /* special_function */
1096 "R_PPC64_ADDR16_LO_DS",/* name */
1097 FALSE, /* partial_inplace */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1102 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_DS, /* type */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE, /* pc_relative */
1109 complain_overflow_signed, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_GOT16_DS", /* name */
1112 FALSE, /* partial_inplace */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1117 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE, /* pc_relative */
1124 complain_overflow_dont, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc, /* special_function */
1126 "R_PPC64_GOT16_LO_DS", /* name */
1127 FALSE, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1132 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE, /* pc_relative */
1139 complain_overflow_dont, /* complain_on_overflow */
1140 ppc64_elf_unhandled_reloc, /* special_function */
1141 "R_PPC64_PLT16_LO_DS", /* name */
1142 FALSE, /* partial_inplace */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1147 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE, /* pc_relative */
1154 complain_overflow_bitfield, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc, /* special_function */
1156 "R_PPC64_SECTOFF_DS", /* name */
1157 FALSE, /* partial_inplace */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1162 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 ppc64_elf_sectoff_reloc, /* special_function */
1171 "R_PPC64_SECTOFF_LO_DS",/* name */
1172 FALSE, /* partial_inplace */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_DS, /* type */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_signed, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc, /* special_function */
1186 "R_PPC64_TOC16_DS", /* name */
1187 FALSE, /* partial_inplace */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1193 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE, /* pc_relative */
1199 complain_overflow_dont, /* complain_on_overflow */
1200 ppc64_elf_toc_reloc, /* special_function */
1201 "R_PPC64_TOC16_LO_DS", /* name */
1202 FALSE, /* partial_inplace */
1204 0xfffc, /* dst_mask */
1205 FALSE), /* pcrel_offset */
1207 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1208 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1209 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1211 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 FALSE, /* pc_relative */
1215 complain_overflow_signed, /* complain_on_overflow */
1216 ppc64_elf_unhandled_reloc, /* special_function */
1217 "R_PPC64_PLTGOT16_DS", /* name */
1218 FALSE, /* partial_inplace */
1220 0xfffc, /* dst_mask */
1221 FALSE), /* pcrel_offset */
1223 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1224 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1225 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1227 1, /* size (0 = byte, 1 = short, 2 = long) */
1229 FALSE, /* pc_relative */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 ppc64_elf_unhandled_reloc, /* special_function */
1233 "R_PPC64_PLTGOT16_LO_DS",/* name */
1234 FALSE, /* partial_inplace */
1236 0xfffc, /* dst_mask */
1237 FALSE), /* pcrel_offset */
1239 /* Marker relocs for TLS. */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 FALSE, /* pc_relative */
1246 complain_overflow_dont, /* complain_on_overflow */
1247 bfd_elf_generic_reloc, /* special_function */
1248 "R_PPC64_TLS", /* name */
1249 FALSE, /* partial_inplace */
1252 FALSE), /* pcrel_offset */
1254 HOWTO (R_PPC64_TLSGD,
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 FALSE, /* pc_relative */
1260 complain_overflow_dont, /* complain_on_overflow */
1261 bfd_elf_generic_reloc, /* special_function */
1262 "R_PPC64_TLSGD", /* name */
1263 FALSE, /* partial_inplace */
1266 FALSE), /* pcrel_offset */
1268 HOWTO (R_PPC64_TLSLD,
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE, /* pc_relative */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
1276 "R_PPC64_TLSLD", /* name */
1277 FALSE, /* partial_inplace */
1280 FALSE), /* pcrel_offset */
1282 /* Computes the load module index of the load module that contains the
1283 definition of its TLS sym. */
1284 HOWTO (R_PPC64_DTPMOD64,
1286 4, /* size (0 = byte, 1 = short, 2 = long) */
1288 FALSE, /* pc_relative */
1290 complain_overflow_dont, /* complain_on_overflow */
1291 ppc64_elf_unhandled_reloc, /* special_function */
1292 "R_PPC64_DTPMOD64", /* name */
1293 FALSE, /* partial_inplace */
1295 ONES (64), /* dst_mask */
1296 FALSE), /* pcrel_offset */
1298 /* Computes a dtv-relative displacement, the difference between the value
1299 of sym+add and the base address of the thread-local storage block that
1300 contains the definition of sym, minus 0x8000. */
1301 HOWTO (R_PPC64_DTPREL64,
1303 4, /* size (0 = byte, 1 = short, 2 = long) */
1305 FALSE, /* pc_relative */
1307 complain_overflow_dont, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc, /* special_function */
1309 "R_PPC64_DTPREL64", /* name */
1310 FALSE, /* partial_inplace */
1312 ONES (64), /* dst_mask */
1313 FALSE), /* pcrel_offset */
1315 /* A 16 bit dtprel reloc. */
1316 HOWTO (R_PPC64_DTPREL16,
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1320 FALSE, /* pc_relative */
1322 complain_overflow_signed, /* complain_on_overflow */
1323 ppc64_elf_unhandled_reloc, /* special_function */
1324 "R_PPC64_DTPREL16", /* name */
1325 FALSE, /* partial_inplace */
1327 0xffff, /* dst_mask */
1328 FALSE), /* pcrel_offset */
1330 /* Like DTPREL16, but no overflow. */
1331 HOWTO (R_PPC64_DTPREL16_LO,
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE, /* pc_relative */
1337 complain_overflow_dont, /* complain_on_overflow */
1338 ppc64_elf_unhandled_reloc, /* special_function */
1339 "R_PPC64_DTPREL16_LO", /* name */
1340 FALSE, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1345 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1346 HOWTO (R_PPC64_DTPREL16_HI,
1347 16, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 FALSE, /* pc_relative */
1352 complain_overflow_dont, /* complain_on_overflow */
1353 ppc64_elf_unhandled_reloc, /* special_function */
1354 "R_PPC64_DTPREL16_HI", /* name */
1355 FALSE, /* partial_inplace */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1360 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1361 HOWTO (R_PPC64_DTPREL16_HA,
1362 16, /* rightshift */
1363 1, /* size (0 = byte, 1 = short, 2 = long) */
1365 FALSE, /* pc_relative */
1367 complain_overflow_dont, /* complain_on_overflow */
1368 ppc64_elf_unhandled_reloc, /* special_function */
1369 "R_PPC64_DTPREL16_HA", /* name */
1370 FALSE, /* partial_inplace */
1372 0xffff, /* dst_mask */
1373 FALSE), /* pcrel_offset */
1375 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1376 HOWTO (R_PPC64_DTPREL16_HIGHER,
1377 32, /* rightshift */
1378 1, /* size (0 = byte, 1 = short, 2 = long) */
1380 FALSE, /* pc_relative */
1382 complain_overflow_dont, /* complain_on_overflow */
1383 ppc64_elf_unhandled_reloc, /* special_function */
1384 "R_PPC64_DTPREL16_HIGHER", /* name */
1385 FALSE, /* partial_inplace */
1387 0xffff, /* dst_mask */
1388 FALSE), /* pcrel_offset */
1390 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1391 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1392 32, /* rightshift */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1395 FALSE, /* pc_relative */
1397 complain_overflow_dont, /* complain_on_overflow */
1398 ppc64_elf_unhandled_reloc, /* special_function */
1399 "R_PPC64_DTPREL16_HIGHERA", /* name */
1400 FALSE, /* partial_inplace */
1402 0xffff, /* dst_mask */
1403 FALSE), /* pcrel_offset */
1405 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1406 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1407 48, /* rightshift */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1410 FALSE, /* pc_relative */
1412 complain_overflow_dont, /* complain_on_overflow */
1413 ppc64_elf_unhandled_reloc, /* special_function */
1414 "R_PPC64_DTPREL16_HIGHEST", /* name */
1415 FALSE, /* partial_inplace */
1417 0xffff, /* dst_mask */
1418 FALSE), /* pcrel_offset */
1420 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1421 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1422 48, /* rightshift */
1423 1, /* size (0 = byte, 1 = short, 2 = long) */
1425 FALSE, /* pc_relative */
1427 complain_overflow_dont, /* complain_on_overflow */
1428 ppc64_elf_unhandled_reloc, /* special_function */
1429 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1430 FALSE, /* partial_inplace */
1432 0xffff, /* dst_mask */
1433 FALSE), /* pcrel_offset */
1435 /* Like DTPREL16, but for insns with a DS field. */
1436 HOWTO (R_PPC64_DTPREL16_DS,
1438 1, /* size (0 = byte, 1 = short, 2 = long) */
1440 FALSE, /* pc_relative */
1442 complain_overflow_signed, /* complain_on_overflow */
1443 ppc64_elf_unhandled_reloc, /* special_function */
1444 "R_PPC64_DTPREL16_DS", /* name */
1445 FALSE, /* partial_inplace */
1447 0xfffc, /* dst_mask */
1448 FALSE), /* pcrel_offset */
1450 /* Like DTPREL16_DS, but no overflow. */
1451 HOWTO (R_PPC64_DTPREL16_LO_DS,
1453 1, /* size (0 = byte, 1 = short, 2 = long) */
1455 FALSE, /* pc_relative */
1457 complain_overflow_dont, /* complain_on_overflow */
1458 ppc64_elf_unhandled_reloc, /* special_function */
1459 "R_PPC64_DTPREL16_LO_DS", /* name */
1460 FALSE, /* partial_inplace */
1462 0xfffc, /* dst_mask */
1463 FALSE), /* pcrel_offset */
1465 /* Computes a tp-relative displacement, the difference between the value of
1466 sym+add and the value of the thread pointer (r13). */
1467 HOWTO (R_PPC64_TPREL64,
1469 4, /* size (0 = byte, 1 = short, 2 = long) */
1471 FALSE, /* pc_relative */
1473 complain_overflow_dont, /* complain_on_overflow */
1474 ppc64_elf_unhandled_reloc, /* special_function */
1475 "R_PPC64_TPREL64", /* name */
1476 FALSE, /* partial_inplace */
1478 ONES (64), /* dst_mask */
1479 FALSE), /* pcrel_offset */
1481 /* A 16 bit tprel reloc. */
1482 HOWTO (R_PPC64_TPREL16,
1484 1, /* size (0 = byte, 1 = short, 2 = long) */
1486 FALSE, /* pc_relative */
1488 complain_overflow_signed, /* complain_on_overflow */
1489 ppc64_elf_unhandled_reloc, /* special_function */
1490 "R_PPC64_TPREL16", /* name */
1491 FALSE, /* partial_inplace */
1493 0xffff, /* dst_mask */
1494 FALSE), /* pcrel_offset */
1496 /* Like TPREL16, but no overflow. */
1497 HOWTO (R_PPC64_TPREL16_LO,
1499 1, /* size (0 = byte, 1 = short, 2 = long) */
1501 FALSE, /* pc_relative */
1503 complain_overflow_dont, /* complain_on_overflow */
1504 ppc64_elf_unhandled_reloc, /* special_function */
1505 "R_PPC64_TPREL16_LO", /* name */
1506 FALSE, /* partial_inplace */
1508 0xffff, /* dst_mask */
1509 FALSE), /* pcrel_offset */
1511 /* Like TPREL16_LO, but next higher group of 16 bits. */
1512 HOWTO (R_PPC64_TPREL16_HI,
1513 16, /* rightshift */
1514 1, /* size (0 = byte, 1 = short, 2 = long) */
1516 FALSE, /* pc_relative */
1518 complain_overflow_dont, /* complain_on_overflow */
1519 ppc64_elf_unhandled_reloc, /* special_function */
1520 "R_PPC64_TPREL16_HI", /* name */
1521 FALSE, /* partial_inplace */
1523 0xffff, /* dst_mask */
1524 FALSE), /* pcrel_offset */
1526 /* Like TPREL16_HI, but adjust for low 16 bits. */
1527 HOWTO (R_PPC64_TPREL16_HA,
1528 16, /* rightshift */
1529 1, /* size (0 = byte, 1 = short, 2 = long) */
1531 FALSE, /* pc_relative */
1533 complain_overflow_dont, /* complain_on_overflow */
1534 ppc64_elf_unhandled_reloc, /* special_function */
1535 "R_PPC64_TPREL16_HA", /* name */
1536 FALSE, /* partial_inplace */
1538 0xffff, /* dst_mask */
1539 FALSE), /* pcrel_offset */
1541 /* Like TPREL16_HI, but next higher group of 16 bits. */
1542 HOWTO (R_PPC64_TPREL16_HIGHER,
1543 32, /* rightshift */
1544 1, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE, /* pc_relative */
1548 complain_overflow_dont, /* complain_on_overflow */
1549 ppc64_elf_unhandled_reloc, /* special_function */
1550 "R_PPC64_TPREL16_HIGHER", /* name */
1551 FALSE, /* partial_inplace */
1553 0xffff, /* dst_mask */
1554 FALSE), /* pcrel_offset */
1556 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1557 HOWTO (R_PPC64_TPREL16_HIGHERA,
1558 32, /* rightshift */
1559 1, /* size (0 = byte, 1 = short, 2 = long) */
1561 FALSE, /* pc_relative */
1563 complain_overflow_dont, /* complain_on_overflow */
1564 ppc64_elf_unhandled_reloc, /* special_function */
1565 "R_PPC64_TPREL16_HIGHERA", /* name */
1566 FALSE, /* partial_inplace */
1568 0xffff, /* dst_mask */
1569 FALSE), /* pcrel_offset */
1571 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1572 HOWTO (R_PPC64_TPREL16_HIGHEST,
1573 48, /* rightshift */
1574 1, /* size (0 = byte, 1 = short, 2 = long) */
1576 FALSE, /* pc_relative */
1578 complain_overflow_dont, /* complain_on_overflow */
1579 ppc64_elf_unhandled_reloc, /* special_function */
1580 "R_PPC64_TPREL16_HIGHEST", /* name */
1581 FALSE, /* partial_inplace */
1583 0xffff, /* dst_mask */
1584 FALSE), /* pcrel_offset */
1586 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1587 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1588 48, /* rightshift */
1589 1, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE, /* pc_relative */
1593 complain_overflow_dont, /* complain_on_overflow */
1594 ppc64_elf_unhandled_reloc, /* special_function */
1595 "R_PPC64_TPREL16_HIGHESTA", /* name */
1596 FALSE, /* partial_inplace */
1598 0xffff, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1601 /* Like TPREL16, but for insns with a DS field. */
1602 HOWTO (R_PPC64_TPREL16_DS,
1604 1, /* size (0 = byte, 1 = short, 2 = long) */
1606 FALSE, /* pc_relative */
1608 complain_overflow_signed, /* complain_on_overflow */
1609 ppc64_elf_unhandled_reloc, /* special_function */
1610 "R_PPC64_TPREL16_DS", /* name */
1611 FALSE, /* partial_inplace */
1613 0xfffc, /* dst_mask */
1614 FALSE), /* pcrel_offset */
1616 /* Like TPREL16_DS, but no overflow. */
1617 HOWTO (R_PPC64_TPREL16_LO_DS,
1619 1, /* size (0 = byte, 1 = short, 2 = long) */
1621 FALSE, /* pc_relative */
1623 complain_overflow_dont, /* complain_on_overflow */
1624 ppc64_elf_unhandled_reloc, /* special_function */
1625 "R_PPC64_TPREL16_LO_DS", /* name */
1626 FALSE, /* partial_inplace */
1628 0xfffc, /* dst_mask */
1629 FALSE), /* pcrel_offset */
1631 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1632 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1633 to the first entry relative to the TOC base (r2). */
1634 HOWTO (R_PPC64_GOT_TLSGD16,
1636 1, /* size (0 = byte, 1 = short, 2 = long) */
1638 FALSE, /* pc_relative */
1640 complain_overflow_signed, /* complain_on_overflow */
1641 ppc64_elf_unhandled_reloc, /* special_function */
1642 "R_PPC64_GOT_TLSGD16", /* name */
1643 FALSE, /* partial_inplace */
1645 0xffff, /* dst_mask */
1646 FALSE), /* pcrel_offset */
1648 /* Like GOT_TLSGD16, but no overflow. */
1649 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1651 1, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE, /* pc_relative */
1655 complain_overflow_dont, /* complain_on_overflow */
1656 ppc64_elf_unhandled_reloc, /* special_function */
1657 "R_PPC64_GOT_TLSGD16_LO", /* name */
1658 FALSE, /* partial_inplace */
1660 0xffff, /* dst_mask */
1661 FALSE), /* pcrel_offset */
1663 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1664 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1665 16, /* rightshift */
1666 1, /* size (0 = byte, 1 = short, 2 = long) */
1668 FALSE, /* pc_relative */
1670 complain_overflow_dont, /* complain_on_overflow */
1671 ppc64_elf_unhandled_reloc, /* special_function */
1672 "R_PPC64_GOT_TLSGD16_HI", /* name */
1673 FALSE, /* partial_inplace */
1675 0xffff, /* dst_mask */
1676 FALSE), /* pcrel_offset */
1678 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1679 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1680 16, /* rightshift */
1681 1, /* size (0 = byte, 1 = short, 2 = long) */
1683 FALSE, /* pc_relative */
1685 complain_overflow_dont, /* complain_on_overflow */
1686 ppc64_elf_unhandled_reloc, /* special_function */
1687 "R_PPC64_GOT_TLSGD16_HA", /* name */
1688 FALSE, /* partial_inplace */
1690 0xffff, /* dst_mask */
1691 FALSE), /* pcrel_offset */
1693 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1694 with values (sym+add)@dtpmod and zero, and computes the offset to the
1695 first entry relative to the TOC base (r2). */
1696 HOWTO (R_PPC64_GOT_TLSLD16,
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 FALSE, /* pc_relative */
1702 complain_overflow_signed, /* complain_on_overflow */
1703 ppc64_elf_unhandled_reloc, /* special_function */
1704 "R_PPC64_GOT_TLSLD16", /* name */
1705 FALSE, /* partial_inplace */
1707 0xffff, /* dst_mask */
1708 FALSE), /* pcrel_offset */
1710 /* Like GOT_TLSLD16, but no overflow. */
1711 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1715 FALSE, /* pc_relative */
1717 complain_overflow_dont, /* complain_on_overflow */
1718 ppc64_elf_unhandled_reloc, /* special_function */
1719 "R_PPC64_GOT_TLSLD16_LO", /* name */
1720 FALSE, /* partial_inplace */
1722 0xffff, /* dst_mask */
1723 FALSE), /* pcrel_offset */
1725 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1726 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1727 16, /* rightshift */
1728 1, /* size (0 = byte, 1 = short, 2 = long) */
1730 FALSE, /* pc_relative */
1732 complain_overflow_dont, /* complain_on_overflow */
1733 ppc64_elf_unhandled_reloc, /* special_function */
1734 "R_PPC64_GOT_TLSLD16_HI", /* name */
1735 FALSE, /* partial_inplace */
1737 0xffff, /* dst_mask */
1738 FALSE), /* pcrel_offset */
1740 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1741 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1742 16, /* rightshift */
1743 1, /* size (0 = byte, 1 = short, 2 = long) */
1745 FALSE, /* pc_relative */
1747 complain_overflow_dont, /* complain_on_overflow */
1748 ppc64_elf_unhandled_reloc, /* special_function */
1749 "R_PPC64_GOT_TLSLD16_HA", /* name */
1750 FALSE, /* partial_inplace */
1752 0xffff, /* dst_mask */
1753 FALSE), /* pcrel_offset */
1755 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1756 the offset to the entry relative to the TOC base (r2). */
1757 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1759 1, /* size (0 = byte, 1 = short, 2 = long) */
1761 FALSE, /* pc_relative */
1763 complain_overflow_signed, /* complain_on_overflow */
1764 ppc64_elf_unhandled_reloc, /* special_function */
1765 "R_PPC64_GOT_DTPREL16_DS", /* name */
1766 FALSE, /* partial_inplace */
1768 0xfffc, /* dst_mask */
1769 FALSE), /* pcrel_offset */
1771 /* Like GOT_DTPREL16_DS, but no overflow. */
1772 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1774 1, /* size (0 = byte, 1 = short, 2 = long) */
1776 FALSE, /* pc_relative */
1778 complain_overflow_dont, /* complain_on_overflow */
1779 ppc64_elf_unhandled_reloc, /* special_function */
1780 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1781 FALSE, /* partial_inplace */
1783 0xfffc, /* dst_mask */
1784 FALSE), /* pcrel_offset */
1786 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1787 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1788 16, /* rightshift */
1789 1, /* size (0 = byte, 1 = short, 2 = long) */
1791 FALSE, /* pc_relative */
1793 complain_overflow_dont, /* complain_on_overflow */
1794 ppc64_elf_unhandled_reloc, /* special_function */
1795 "R_PPC64_GOT_DTPREL16_HI", /* name */
1796 FALSE, /* partial_inplace */
1798 0xffff, /* dst_mask */
1799 FALSE), /* pcrel_offset */
1801 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1802 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1803 16, /* rightshift */
1804 1, /* size (0 = byte, 1 = short, 2 = long) */
1806 FALSE, /* pc_relative */
1808 complain_overflow_dont, /* complain_on_overflow */
1809 ppc64_elf_unhandled_reloc, /* special_function */
1810 "R_PPC64_GOT_DTPREL16_HA", /* name */
1811 FALSE, /* partial_inplace */
1813 0xffff, /* dst_mask */
1814 FALSE), /* pcrel_offset */
1816 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1817 offset to the entry relative to the TOC base (r2). */
1818 HOWTO (R_PPC64_GOT_TPREL16_DS,
1820 1, /* size (0 = byte, 1 = short, 2 = long) */
1822 FALSE, /* pc_relative */
1824 complain_overflow_signed, /* complain_on_overflow */
1825 ppc64_elf_unhandled_reloc, /* special_function */
1826 "R_PPC64_GOT_TPREL16_DS", /* name */
1827 FALSE, /* partial_inplace */
1829 0xfffc, /* dst_mask */
1830 FALSE), /* pcrel_offset */
1832 /* Like GOT_TPREL16_DS, but no overflow. */
1833 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1835 1, /* size (0 = byte, 1 = short, 2 = long) */
1837 FALSE, /* pc_relative */
1839 complain_overflow_dont, /* complain_on_overflow */
1840 ppc64_elf_unhandled_reloc, /* special_function */
1841 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1842 FALSE, /* partial_inplace */
1844 0xfffc, /* dst_mask */
1845 FALSE), /* pcrel_offset */
1847 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1848 HOWTO (R_PPC64_GOT_TPREL16_HI,
1849 16, /* rightshift */
1850 1, /* size (0 = byte, 1 = short, 2 = long) */
1852 FALSE, /* pc_relative */
1854 complain_overflow_dont, /* complain_on_overflow */
1855 ppc64_elf_unhandled_reloc, /* special_function */
1856 "R_PPC64_GOT_TPREL16_HI", /* name */
1857 FALSE, /* partial_inplace */
1859 0xffff, /* dst_mask */
1860 FALSE), /* pcrel_offset */
1862 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1863 HOWTO (R_PPC64_GOT_TPREL16_HA,
1864 16, /* rightshift */
1865 1, /* size (0 = byte, 1 = short, 2 = long) */
1867 FALSE, /* pc_relative */
1869 complain_overflow_dont, /* complain_on_overflow */
1870 ppc64_elf_unhandled_reloc, /* special_function */
1871 "R_PPC64_GOT_TPREL16_HA", /* name */
1872 FALSE, /* partial_inplace */
1874 0xffff, /* dst_mask */
1875 FALSE), /* pcrel_offset */
1877 HOWTO (R_PPC64_JMP_IREL, /* type */
1879 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1881 FALSE, /* pc_relative */
1883 complain_overflow_dont, /* complain_on_overflow */
1884 ppc64_elf_unhandled_reloc, /* special_function */
1885 "R_PPC64_JMP_IREL", /* name */
1886 FALSE, /* partial_inplace */
1889 FALSE), /* pcrel_offset */
1891 HOWTO (R_PPC64_IRELATIVE, /* type */
1893 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1895 FALSE, /* pc_relative */
1897 complain_overflow_dont, /* complain_on_overflow */
1898 bfd_elf_generic_reloc, /* special_function */
1899 "R_PPC64_IRELATIVE", /* name */
1900 FALSE, /* partial_inplace */
1902 ONES (64), /* dst_mask */
1903 FALSE), /* pcrel_offset */
1905 /* A 16 bit relative relocation. */
1906 HOWTO (R_PPC64_REL16, /* type */
1908 1, /* size (0 = byte, 1 = short, 2 = long) */
1910 TRUE, /* pc_relative */
1912 complain_overflow_bitfield, /* complain_on_overflow */
1913 bfd_elf_generic_reloc, /* special_function */
1914 "R_PPC64_REL16", /* name */
1915 FALSE, /* partial_inplace */
1917 0xffff, /* dst_mask */
1918 TRUE), /* pcrel_offset */
1920 /* A 16 bit relative relocation without overflow. */
1921 HOWTO (R_PPC64_REL16_LO, /* type */
1923 1, /* size (0 = byte, 1 = short, 2 = long) */
1925 TRUE, /* pc_relative */
1927 complain_overflow_dont,/* complain_on_overflow */
1928 bfd_elf_generic_reloc, /* special_function */
1929 "R_PPC64_REL16_LO", /* name */
1930 FALSE, /* partial_inplace */
1932 0xffff, /* dst_mask */
1933 TRUE), /* pcrel_offset */
1935 /* The high order 16 bits of a relative address. */
1936 HOWTO (R_PPC64_REL16_HI, /* type */
1937 16, /* rightshift */
1938 1, /* size (0 = byte, 1 = short, 2 = long) */
1940 TRUE, /* pc_relative */
1942 complain_overflow_dont, /* complain_on_overflow */
1943 bfd_elf_generic_reloc, /* special_function */
1944 "R_PPC64_REL16_HI", /* name */
1945 FALSE, /* partial_inplace */
1947 0xffff, /* dst_mask */
1948 TRUE), /* pcrel_offset */
1950 /* The high order 16 bits of a relative address, plus 1 if the contents of
1951 the low 16 bits, treated as a signed number, is negative. */
1952 HOWTO (R_PPC64_REL16_HA, /* type */
1953 16, /* rightshift */
1954 1, /* size (0 = byte, 1 = short, 2 = long) */
1956 TRUE, /* pc_relative */
1958 complain_overflow_dont, /* complain_on_overflow */
1959 ppc64_elf_ha_reloc, /* special_function */
1960 "R_PPC64_REL16_HA", /* name */
1961 FALSE, /* partial_inplace */
1963 0xffff, /* dst_mask */
1964 TRUE), /* pcrel_offset */
1966 /* GNU extension to record C++ vtable hierarchy. */
1967 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1969 0, /* size (0 = byte, 1 = short, 2 = long) */
1971 FALSE, /* pc_relative */
1973 complain_overflow_dont, /* complain_on_overflow */
1974 NULL, /* special_function */
1975 "R_PPC64_GNU_VTINHERIT", /* name */
1976 FALSE, /* partial_inplace */
1979 FALSE), /* pcrel_offset */
1981 /* GNU extension to record C++ vtable member usage. */
1982 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1984 0, /* size (0 = byte, 1 = short, 2 = long) */
1986 FALSE, /* pc_relative */
1988 complain_overflow_dont, /* complain_on_overflow */
1989 NULL, /* special_function */
1990 "R_PPC64_GNU_VTENTRY", /* name */
1991 FALSE, /* partial_inplace */
1994 FALSE), /* pcrel_offset */
1998 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2002 ppc_howto_init (void)
2004 unsigned int i, type;
2007 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2010 type = ppc64_elf_howto_raw[i].type;
2011 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2012 / sizeof (ppc64_elf_howto_table[0])));
2013 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2017 static reloc_howto_type *
2018 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2019 bfd_reloc_code_real_type code)
2021 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2023 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2024 /* Initialize howto table if needed. */
2032 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2034 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2036 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2038 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2040 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2042 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2044 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2046 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2048 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2050 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2052 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2054 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2056 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2058 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2060 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2062 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2064 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2066 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2068 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2070 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2072 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2074 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2076 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2078 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2080 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2082 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2084 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2086 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2088 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2090 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2092 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2094 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2096 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2098 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2100 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2102 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2104 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2106 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2108 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2110 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2112 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2114 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2116 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2118 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2120 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2122 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2124 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2126 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2128 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2130 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2132 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2134 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2136 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2138 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2140 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2142 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2144 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2146 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2148 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2150 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2152 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2154 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2156 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2158 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2160 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2162 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2164 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2166 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2168 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2170 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2172 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2174 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2176 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2178 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2180 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2186 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2188 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2194 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2196 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2198 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2202 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2204 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2210 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2212 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2214 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2222 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2224 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2226 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2234 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2236 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2238 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2240 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2242 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2244 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2248 return ppc64_elf_howto_table[r];
2251 static reloc_howto_type *
2252 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2258 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2260 if (ppc64_elf_howto_raw[i].name != NULL
2261 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2262 return &ppc64_elf_howto_raw[i];
2267 /* Set the howto pointer for a PowerPC ELF reloc. */
2270 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2271 Elf_Internal_Rela *dst)
2275 /* Initialize howto table if needed. */
2276 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2279 type = ELF64_R_TYPE (dst->r_info);
2280 if (type >= (sizeof (ppc64_elf_howto_table)
2281 / sizeof (ppc64_elf_howto_table[0])))
2283 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2285 type = R_PPC64_NONE;
2287 cache_ptr->howto = ppc64_elf_howto_table[type];
2290 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2292 static bfd_reloc_status_type
2293 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2294 void *data, asection *input_section,
2295 bfd *output_bfd, char **error_message)
2297 /* If this is a relocatable link (output_bfd test tells us), just
2298 call the generic function. Any adjustment will be done at final
2300 if (output_bfd != NULL)
2301 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2302 input_section, output_bfd, error_message);
2304 /* Adjust the addend for sign extension of the low 16 bits.
2305 We won't actually be using the low 16 bits, so trashing them
2307 reloc_entry->addend += 0x8000;
2308 return bfd_reloc_continue;
2311 static bfd_reloc_status_type
2312 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2313 void *data, asection *input_section,
2314 bfd *output_bfd, char **error_message)
2316 if (output_bfd != NULL)
2317 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2318 input_section, output_bfd, error_message);
2320 if (strcmp (symbol->section->name, ".opd") == 0
2321 && (symbol->section->owner->flags & DYNAMIC) == 0)
2323 bfd_vma dest = opd_entry_value (symbol->section,
2324 symbol->value + reloc_entry->addend,
2326 if (dest != (bfd_vma) -1)
2327 reloc_entry->addend = dest - (symbol->value
2328 + symbol->section->output_section->vma
2329 + symbol->section->output_offset);
2331 return bfd_reloc_continue;
2334 static bfd_reloc_status_type
2335 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2336 void *data, asection *input_section,
2337 bfd *output_bfd, char **error_message)
2340 enum elf_ppc64_reloc_type r_type;
2341 bfd_size_type octets;
2342 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2343 bfd_boolean is_power4 = FALSE;
2345 /* If this is a relocatable link (output_bfd test tells us), just
2346 call the generic function. Any adjustment will be done at final
2348 if (output_bfd != NULL)
2349 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2350 input_section, output_bfd, error_message);
2352 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2353 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2354 insn &= ~(0x01 << 21);
2355 r_type = reloc_entry->howto->type;
2356 if (r_type == R_PPC64_ADDR14_BRTAKEN
2357 || r_type == R_PPC64_REL14_BRTAKEN)
2358 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2362 /* Set 'a' bit. This is 0b00010 in BO field for branch
2363 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2364 for branch on CTR insns (BO == 1a00t or 1a01t). */
2365 if ((insn & (0x14 << 21)) == (0x04 << 21))
2367 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2377 if (!bfd_is_com_section (symbol->section))
2378 target = symbol->value;
2379 target += symbol->section->output_section->vma;
2380 target += symbol->section->output_offset;
2381 target += reloc_entry->addend;
2383 from = (reloc_entry->address
2384 + input_section->output_offset
2385 + input_section->output_section->vma);
2387 /* Invert 'y' bit if not the default. */
2388 if ((bfd_signed_vma) (target - from) < 0)
2391 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2393 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2394 input_section, output_bfd, error_message);
2397 static bfd_reloc_status_type
2398 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2399 void *data, asection *input_section,
2400 bfd *output_bfd, char **error_message)
2402 /* If this is a relocatable link (output_bfd test tells us), just
2403 call the generic function. Any adjustment will be done at final
2405 if (output_bfd != NULL)
2406 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2407 input_section, output_bfd, error_message);
2409 /* Subtract the symbol section base address. */
2410 reloc_entry->addend -= symbol->section->output_section->vma;
2411 return bfd_reloc_continue;
2414 static bfd_reloc_status_type
2415 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2416 void *data, asection *input_section,
2417 bfd *output_bfd, char **error_message)
2419 /* If this is a relocatable link (output_bfd test tells us), just
2420 call the generic function. Any adjustment will be done at final
2422 if (output_bfd != NULL)
2423 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2424 input_section, output_bfd, error_message);
2426 /* Subtract the symbol section base address. */
2427 reloc_entry->addend -= symbol->section->output_section->vma;
2429 /* Adjust the addend for sign extension of the low 16 bits. */
2430 reloc_entry->addend += 0x8000;
2431 return bfd_reloc_continue;
2434 static bfd_reloc_status_type
2435 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2436 void *data, asection *input_section,
2437 bfd *output_bfd, char **error_message)
2441 /* If this is a relocatable link (output_bfd test tells us), just
2442 call the generic function. Any adjustment will be done at final
2444 if (output_bfd != NULL)
2445 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2446 input_section, output_bfd, error_message);
2448 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2450 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2452 /* Subtract the TOC base address. */
2453 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2454 return bfd_reloc_continue;
2457 static bfd_reloc_status_type
2458 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2459 void *data, asection *input_section,
2460 bfd *output_bfd, char **error_message)
2464 /* If this is a relocatable link (output_bfd test tells us), just
2465 call the generic function. Any adjustment will be done at final
2467 if (output_bfd != NULL)
2468 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2469 input_section, output_bfd, error_message);
2471 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2473 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2475 /* Subtract the TOC base address. */
2476 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2478 /* Adjust the addend for sign extension of the low 16 bits. */
2479 reloc_entry->addend += 0x8000;
2480 return bfd_reloc_continue;
2483 static bfd_reloc_status_type
2484 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2485 void *data, asection *input_section,
2486 bfd *output_bfd, char **error_message)
2489 bfd_size_type octets;
2491 /* If this is a relocatable link (output_bfd test tells us), just
2492 call the generic function. Any adjustment will be done at final
2494 if (output_bfd != NULL)
2495 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2496 input_section, output_bfd, error_message);
2498 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2500 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2502 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2503 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2504 return bfd_reloc_ok;
2507 static bfd_reloc_status_type
2508 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2509 void *data, asection *input_section,
2510 bfd *output_bfd, char **error_message)
2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2515 if (output_bfd != NULL)
2516 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2517 input_section, output_bfd, error_message);
2519 if (error_message != NULL)
2521 static char buf[60];
2522 sprintf (buf, "generic linker can't handle %s",
2523 reloc_entry->howto->name);
2524 *error_message = buf;
2526 return bfd_reloc_dangerous;
2529 struct ppc64_elf_obj_tdata
2531 struct elf_obj_tdata elf;
2533 /* Shortcuts to dynamic linker sections. */
2537 /* Used during garbage collection. We attach global symbols defined
2538 on removed .opd entries to this section so that the sym is removed. */
2539 asection *deleted_section;
2541 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2542 sections means we potentially need one of these for each input bfd. */
2544 bfd_signed_vma refcount;
2548 /* A copy of relocs before they are modified for --emit-relocs. */
2549 Elf_Internal_Rela *opd_relocs;
2552 #define ppc64_elf_tdata(bfd) \
2553 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2555 #define ppc64_tlsld_got(bfd) \
2556 (&ppc64_elf_tdata (bfd)->tlsld_got)
2558 #define is_ppc64_elf(bfd) \
2559 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2560 && elf_object_id (bfd) == PPC64_ELF_TDATA)
2562 /* Override the generic function because we store some extras. */
2565 ppc64_elf_mkobject (bfd *abfd)
2567 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2571 /* Fix bad default arch selected for a 64 bit input bfd when the
2572 default is 32 bit. */
2575 ppc64_elf_object_p (bfd *abfd)
2577 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2579 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2581 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2583 /* Relies on arch after 32 bit default being 64 bit default. */
2584 abfd->arch_info = abfd->arch_info->next;
2585 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2591 /* Support for core dump NOTE sections. */
2594 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2596 size_t offset, size;
2598 if (note->descsz != 504)
2602 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2605 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2611 /* Make a ".reg/999" section. */
2612 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2613 size, note->descpos + offset);
2617 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2619 if (note->descsz != 136)
2622 elf_tdata (abfd)->core_program
2623 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2624 elf_tdata (abfd)->core_command
2625 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2631 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2644 va_start (ap, note_type);
2645 memset (data, 0, 40);
2646 strncpy (data + 40, va_arg (ap, const char *), 16);
2647 strncpy (data + 56, va_arg (ap, const char *), 80);
2649 return elfcore_write_note (abfd, buf, bufsiz,
2650 "CORE", note_type, data, sizeof (data));
2661 va_start (ap, note_type);
2662 memset (data, 0, 112);
2663 pid = va_arg (ap, long);
2664 bfd_put_32 (abfd, pid, data + 32);
2665 cursig = va_arg (ap, int);
2666 bfd_put_16 (abfd, cursig, data + 12);
2667 greg = va_arg (ap, const void *);
2668 memcpy (data + 112, greg, 384);
2669 memset (data + 496, 0, 8);
2671 return elfcore_write_note (abfd, buf, bufsiz,
2672 "CORE", note_type, data, sizeof (data));
2677 /* Merge backend specific data from an object file to the output
2678 object file when linking. */
2681 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2683 /* Check if we have the same endianess. */
2684 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2685 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2686 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2690 if (bfd_big_endian (ibfd))
2691 msg = _("%B: compiled for a big endian system "
2692 "and target is little endian");
2694 msg = _("%B: compiled for a little endian system "
2695 "and target is big endian");
2697 (*_bfd_error_handler) (msg, ibfd);
2699 bfd_set_error (bfd_error_wrong_format);
2706 /* Add extra PPC sections. */
2708 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2710 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2711 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2712 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2713 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2714 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2715 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2716 { NULL, 0, 0, 0, 0 }
2719 enum _ppc64_sec_type {
2725 struct _ppc64_elf_section_data
2727 struct bfd_elf_section_data elf;
2731 /* An array with one entry for each opd function descriptor. */
2732 struct _opd_sec_data
2734 /* Points to the function code section for local opd entries. */
2735 asection **func_sec;
2737 /* After editing .opd, adjust references to opd local syms. */
2741 /* An array for toc sections, indexed by offset/8. */
2742 struct _toc_sec_data
2744 /* Specifies the relocation symbol index used at a given toc offset. */
2747 /* And the relocation addend. */
2752 enum _ppc64_sec_type sec_type:2;
2754 /* Flag set when small branches are detected. Used to
2755 select suitable defaults for the stub group size. */
2756 unsigned int has_14bit_branch:1;
2759 #define ppc64_elf_section_data(sec) \
2760 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2763 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2765 if (!sec->used_by_bfd)
2767 struct _ppc64_elf_section_data *sdata;
2768 bfd_size_type amt = sizeof (*sdata);
2770 sdata = bfd_zalloc (abfd, amt);
2773 sec->used_by_bfd = sdata;
2776 return _bfd_elf_new_section_hook (abfd, sec);
2779 static struct _opd_sec_data *
2780 get_opd_info (asection * sec)
2783 && ppc64_elf_section_data (sec) != NULL
2784 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2785 return &ppc64_elf_section_data (sec)->u.opd;
2789 /* Parameters for the qsort hook. */
2790 static bfd_boolean synthetic_relocatable;
2792 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2795 compare_symbols (const void *ap, const void *bp)
2797 const asymbol *a = * (const asymbol **) ap;
2798 const asymbol *b = * (const asymbol **) bp;
2800 /* Section symbols first. */
2801 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2803 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2806 /* then .opd symbols. */
2807 if (strcmp (a->section->name, ".opd") == 0
2808 && strcmp (b->section->name, ".opd") != 0)
2810 if (strcmp (a->section->name, ".opd") != 0
2811 && strcmp (b->section->name, ".opd") == 0)
2814 /* then other code symbols. */
2815 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2816 == (SEC_CODE | SEC_ALLOC)
2817 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2818 != (SEC_CODE | SEC_ALLOC))
2821 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2822 != (SEC_CODE | SEC_ALLOC)
2823 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2824 == (SEC_CODE | SEC_ALLOC))
2827 if (synthetic_relocatable)
2829 if (a->section->id < b->section->id)
2832 if (a->section->id > b->section->id)
2836 if (a->value + a->section->vma < b->value + b->section->vma)
2839 if (a->value + a->section->vma > b->value + b->section->vma)
2842 /* For syms with the same value, prefer strong dynamic global function
2843 syms over other syms. */
2844 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2847 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2850 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2853 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2856 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2859 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2862 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2865 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2871 /* Search SYMS for a symbol of the given VALUE. */
2874 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2882 mid = (lo + hi) >> 1;
2883 if (syms[mid]->value + syms[mid]->section->vma < value)
2885 else if (syms[mid]->value + syms[mid]->section->vma > value)
2895 mid = (lo + hi) >> 1;
2896 if (syms[mid]->section->id < id)
2898 else if (syms[mid]->section->id > id)
2900 else if (syms[mid]->value < value)
2902 else if (syms[mid]->value > value)
2912 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2914 bfd_vma vma = *(bfd_vma *) ptr;
2915 return ((section->flags & SEC_ALLOC) != 0
2916 && section->vma <= vma
2917 && vma < section->vma + section->size);
2920 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2921 entry syms. Also generate @plt symbols for the glink branch table. */
2924 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2925 long static_count, asymbol **static_syms,
2926 long dyn_count, asymbol **dyn_syms,
2933 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2935 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2940 opd = bfd_get_section_by_name (abfd, ".opd");
2944 symcount = static_count;
2946 symcount += dyn_count;
2950 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2954 if (!relocatable && static_count != 0 && dyn_count != 0)
2956 /* Use both symbol tables. */
2957 memcpy (syms, static_syms, static_count * sizeof (*syms));
2958 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2960 else if (!relocatable && static_count == 0)
2961 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2963 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2965 synthetic_relocatable = relocatable;
2966 qsort (syms, symcount, sizeof (*syms), compare_symbols);
2968 if (!relocatable && symcount > 1)
2971 /* Trim duplicate syms, since we may have merged the normal and
2972 dynamic symbols. Actually, we only care about syms that have
2973 different values, so trim any with the same value. */
2974 for (i = 1, j = 1; i < symcount; ++i)
2975 if (syms[i - 1]->value + syms[i - 1]->section->vma
2976 != syms[i]->value + syms[i]->section->vma)
2977 syms[j++] = syms[i];
2982 if (strcmp (syms[i]->section->name, ".opd") == 0)
2986 for (; i < symcount; ++i)
2987 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2988 != (SEC_CODE | SEC_ALLOC))
2989 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2993 for (; i < symcount; ++i)
2994 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2998 for (; i < symcount; ++i)
2999 if (strcmp (syms[i]->section->name, ".opd") != 0)
3003 for (; i < symcount; ++i)
3004 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3005 != (SEC_CODE | SEC_ALLOC))
3013 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3018 if (opdsymend == secsymend)
3021 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3022 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3026 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3033 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3037 while (r < opd->relocation + relcount
3038 && r->address < syms[i]->value + opd->vma)
3041 if (r == opd->relocation + relcount)
3044 if (r->address != syms[i]->value + opd->vma)
3047 if (r->howto->type != R_PPC64_ADDR64)
3050 sym = *r->sym_ptr_ptr;
3051 if (!sym_exists_at (syms, opdsymend, symcount,
3052 sym->section->id, sym->value + r->addend))
3055 size += sizeof (asymbol);
3056 size += strlen (syms[i]->name) + 2;
3060 s = *ret = bfd_malloc (size);
3067 names = (char *) (s + count);
3069 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3073 while (r < opd->relocation + relcount
3074 && r->address < syms[i]->value + opd->vma)
3077 if (r == opd->relocation + relcount)
3080 if (r->address != syms[i]->value + opd->vma)
3083 if (r->howto->type != R_PPC64_ADDR64)
3086 sym = *r->sym_ptr_ptr;
3087 if (!sym_exists_at (syms, opdsymend, symcount,
3088 sym->section->id, sym->value + r->addend))
3093 s->flags |= BSF_SYNTHETIC;
3094 s->section = sym->section;
3095 s->value = sym->value + r->addend;
3098 len = strlen (syms[i]->name);
3099 memcpy (names, syms[i]->name, len + 1);
3101 /* Have udata.p point back to the original symbol this
3102 synthetic symbol was derived from. */
3103 s->udata.p = syms[i];
3110 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3114 bfd_vma glink_vma = 0, resolv_vma = 0;
3115 asection *dynamic, *glink = NULL, *relplt = NULL;
3118 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3122 free_contents_and_exit:
3130 for (i = secsymend; i < opdsymend; ++i)
3134 /* Ignore bogus symbols. */
3135 if (syms[i]->value > opd->size - 8)
3138 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3139 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3142 size += sizeof (asymbol);
3143 size += strlen (syms[i]->name) + 2;
3147 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3149 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3151 bfd_byte *dynbuf, *extdyn, *extdynend;
3153 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3155 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3156 goto free_contents_and_exit;
3158 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3159 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3162 extdynend = extdyn + dynamic->size;
3163 for (; extdyn < extdynend; extdyn += extdynsize)
3165 Elf_Internal_Dyn dyn;
3166 (*swap_dyn_in) (abfd, extdyn, &dyn);
3168 if (dyn.d_tag == DT_NULL)
3171 if (dyn.d_tag == DT_PPC64_GLINK)
3173 /* The first glink stub starts at offset 32; see comment in
3174 ppc64_elf_finish_dynamic_sections. */
3175 glink_vma = dyn.d_un.d_val + 32;
3176 /* The .glink section usually does not survive the final
3177 link; search for the section (usually .text) where the
3178 glink stubs now reside. */
3179 glink = bfd_sections_find_if (abfd, section_covers_vma,
3190 /* Determine __glink trampoline by reading the relative branch
3191 from the first glink stub. */
3193 if (bfd_get_section_contents (abfd, glink, buf,
3194 glink_vma + 4 - glink->vma, 4))
3196 unsigned int insn = bfd_get_32 (abfd, buf);
3198 if ((insn & ~0x3fffffc) == 0)
3199 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3203 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3205 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3208 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3209 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3210 goto free_contents_and_exit;
3212 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3213 size += plt_count * sizeof (asymbol);
3215 p = relplt->relocation;
3216 for (i = 0; i < plt_count; i++, p++)
3218 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3220 size += sizeof ("+0x") - 1 + 16;
3225 s = *ret = bfd_malloc (size);
3227 goto free_contents_and_exit;
3229 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3231 for (i = secsymend; i < opdsymend; ++i)
3235 if (syms[i]->value > opd->size - 8)
3238 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3239 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3243 asection *sec = abfd->sections;
3250 long mid = (lo + hi) >> 1;
3251 if (syms[mid]->section->vma < ent)
3253 else if (syms[mid]->section->vma > ent)
3257 sec = syms[mid]->section;
3262 if (lo >= hi && lo > codesecsym)
3263 sec = syms[lo - 1]->section;
3265 for (; sec != NULL; sec = sec->next)
3269 if ((sec->flags & SEC_ALLOC) == 0
3270 || (sec->flags & SEC_LOAD) == 0)
3272 if ((sec->flags & SEC_CODE) != 0)
3275 s->flags |= BSF_SYNTHETIC;
3276 s->value = ent - s->section->vma;
3279 len = strlen (syms[i]->name);
3280 memcpy (names, syms[i]->name, len + 1);
3282 /* Have udata.p point back to the original symbol this
3283 synthetic symbol was derived from. */
3284 s->udata.p = syms[i];
3290 if (glink != NULL && relplt != NULL)
3294 /* Add a symbol for the main glink trampoline. */
3295 memset (s, 0, sizeof *s);
3297 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3299 s->value = resolv_vma - glink->vma;
3301 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3302 names += sizeof ("__glink_PLTresolve");
3307 /* FIXME: It would be very much nicer to put sym@plt on the
3308 stub rather than on the glink branch table entry. The
3309 objdump disassembler would then use a sensible symbol
3310 name on plt calls. The difficulty in doing so is
3311 a) finding the stubs, and,
3312 b) matching stubs against plt entries, and,
3313 c) there can be multiple stubs for a given plt entry.
3315 Solving (a) could be done by code scanning, but older
3316 ppc64 binaries used different stubs to current code.
3317 (b) is the tricky one since you need to known the toc
3318 pointer for at least one function that uses a pic stub to
3319 be able to calculate the plt address referenced.
3320 (c) means gdb would need to set multiple breakpoints (or
3321 find the glink branch itself) when setting breakpoints
3322 for pending shared library loads. */
3323 p = relplt->relocation;
3324 for (i = 0; i < plt_count; i++, p++)
3328 *s = **p->sym_ptr_ptr;
3329 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3330 we are defining a symbol, ensure one of them is set. */
3331 if ((s->flags & BSF_LOCAL) == 0)
3332 s->flags |= BSF_GLOBAL;
3333 s->flags |= BSF_SYNTHETIC;
3335 s->value = glink_vma - glink->vma;
3338 len = strlen ((*p->sym_ptr_ptr)->name);
3339 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3343 memcpy (names, "+0x", sizeof ("+0x") - 1);
3344 names += sizeof ("+0x") - 1;
3345 bfd_sprintf_vma (abfd, names, p->addend);
3346 names += strlen (names);
3348 memcpy (names, "@plt", sizeof ("@plt"));
3349 names += sizeof ("@plt");
3364 /* The following functions are specific to the ELF linker, while
3365 functions above are used generally. Those named ppc64_elf_* are
3366 called by the main ELF linker code. They appear in this file more
3367 or less in the order in which they are called. eg.
3368 ppc64_elf_check_relocs is called early in the link process,
3369 ppc64_elf_finish_dynamic_sections is one of the last functions
3372 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3373 functions have both a function code symbol and a function descriptor
3374 symbol. A call to foo in a relocatable object file looks like:
3381 The function definition in another object file might be:
3385 . .quad .TOC.@tocbase
3391 When the linker resolves the call during a static link, the branch
3392 unsurprisingly just goes to .foo and the .opd information is unused.
3393 If the function definition is in a shared library, things are a little
3394 different: The call goes via a plt call stub, the opd information gets
3395 copied to the plt, and the linker patches the nop.
3403 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3404 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3405 . std 2,40(1) # this is the general idea
3413 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3415 The "reloc ()" notation is supposed to indicate that the linker emits
3416 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3419 What are the difficulties here? Well, firstly, the relocations
3420 examined by the linker in check_relocs are against the function code
3421 sym .foo, while the dynamic relocation in the plt is emitted against
3422 the function descriptor symbol, foo. Somewhere along the line, we need
3423 to carefully copy dynamic link information from one symbol to the other.
3424 Secondly, the generic part of the elf linker will make .foo a dynamic
3425 symbol as is normal for most other backends. We need foo dynamic
3426 instead, at least for an application final link. However, when
3427 creating a shared library containing foo, we need to have both symbols
3428 dynamic so that references to .foo are satisfied during the early
3429 stages of linking. Otherwise the linker might decide to pull in a
3430 definition from some other object, eg. a static library.
3432 Update: As of August 2004, we support a new convention. Function
3433 calls may use the function descriptor symbol, ie. "bl foo". This
3434 behaves exactly as "bl .foo". */
3436 /* The linker needs to keep track of the number of relocs that it
3437 decides to copy as dynamic relocs in check_relocs for each symbol.
3438 This is so that it can later discard them if they are found to be
3439 unnecessary. We store the information in a field extending the
3440 regular ELF linker hash table. */
3442 struct ppc_dyn_relocs
3444 struct ppc_dyn_relocs *next;
3446 /* The input section of the reloc. */
3449 /* Total number of relocs copied for the input section. */
3450 bfd_size_type count;
3452 /* Number of pc-relative relocs copied for the input section. */
3453 bfd_size_type pc_count;
3456 /* Track GOT entries needed for a given symbol. We might need more
3457 than one got entry per symbol. */
3460 struct got_entry *next;
3462 /* The symbol addend that we'll be placing in the GOT. */
3465 /* Unlike other ELF targets, we use separate GOT entries for the same
3466 symbol referenced from different input files. This is to support
3467 automatic multiple TOC/GOT sections, where the TOC base can vary
3468 from one input file to another. FIXME: After group_sections we
3469 ought to merge entries within the group.
3471 Point to the BFD owning this GOT entry. */
3474 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3475 TLS_TPREL or TLS_DTPREL for tls entries. */
3478 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3481 bfd_signed_vma refcount;
3486 /* The same for PLT. */
3489 struct plt_entry *next;
3495 bfd_signed_vma refcount;
3500 /* Of those relocs that might be copied as dynamic relocs, this function
3501 selects those that must be copied when linking a shared library,
3502 even when the symbol is local. */
3505 must_be_dyn_reloc (struct bfd_link_info *info,
3506 enum elf_ppc64_reloc_type r_type)
3518 case R_PPC64_TPREL16:
3519 case R_PPC64_TPREL16_LO:
3520 case R_PPC64_TPREL16_HI:
3521 case R_PPC64_TPREL16_HA:
3522 case R_PPC64_TPREL16_DS:
3523 case R_PPC64_TPREL16_LO_DS:
3524 case R_PPC64_TPREL16_HIGHER:
3525 case R_PPC64_TPREL16_HIGHERA:
3526 case R_PPC64_TPREL16_HIGHEST:
3527 case R_PPC64_TPREL16_HIGHESTA:
3528 case R_PPC64_TPREL64:
3529 return !info->executable;
3533 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3534 copying dynamic variables from a shared lib into an app's dynbss
3535 section, and instead use a dynamic relocation to point into the
3536 shared lib. With code that gcc generates, it's vital that this be
3537 enabled; In the PowerPC64 ABI, the address of a function is actually
3538 the address of a function descriptor, which resides in the .opd
3539 section. gcc uses the descriptor directly rather than going via the
3540 GOT as some other ABI's do, which means that initialized function
3541 pointers must reference the descriptor. Thus, a function pointer
3542 initialized to the address of a function in a shared library will
3543 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3544 redefines the function descriptor symbol to point to the copy. This
3545 presents a problem as a plt entry for that function is also
3546 initialized from the function descriptor symbol and the copy reloc
3547 may not be initialized first. */
3548 #define ELIMINATE_COPY_RELOCS 1
3550 /* Section name for stubs is the associated section name plus this
3552 #define STUB_SUFFIX ".stub"
3555 ppc_stub_long_branch:
3556 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3557 destination, but a 24 bit branch in a stub section will reach.
3560 ppc_stub_plt_branch:
3561 Similar to the above, but a 24 bit branch in the stub section won't
3562 reach its destination.
3563 . addis %r12,%r2,xxx@toc@ha
3564 . ld %r11,xxx@toc@l(%r12)
3569 Used to call a function in a shared library. If it so happens that
3570 the plt entry referenced crosses a 64k boundary, then an extra
3571 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3572 . addis %r12,%r2,xxx@toc@ha
3574 . ld %r11,xxx+0@toc@l(%r12)
3576 . ld %r2,xxx+8@toc@l(%r12)
3577 . ld %r11,xxx+16@toc@l(%r12)
3580 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3581 code to adjust the value and save r2 to support multiple toc sections.
3582 A ppc_stub_long_branch with an r2 offset looks like:
3584 . addis %r2,%r2,off@ha
3585 . addi %r2,%r2,off@l
3588 A ppc_stub_plt_branch with an r2 offset looks like:
3590 . addis %r12,%r2,xxx@toc@ha
3591 . ld %r11,xxx@toc@l(%r12)
3592 . addis %r2,%r2,off@ha
3593 . addi %r2,%r2,off@l
3597 In cases where the "addis" instruction would add zero, the "addis" is
3598 omitted and following instructions modified slightly in some cases.
3601 enum ppc_stub_type {
3603 ppc_stub_long_branch,
3604 ppc_stub_long_branch_r2off,
3605 ppc_stub_plt_branch,
3606 ppc_stub_plt_branch_r2off,
3610 struct ppc_stub_hash_entry {
3612 /* Base hash table entry structure. */
3613 struct bfd_hash_entry root;
3615 enum ppc_stub_type stub_type;
3617 /* The stub section. */
3620 /* Offset within stub_sec of the beginning of this stub. */
3621 bfd_vma stub_offset;
3623 /* Given the symbol's value and its section we can determine its final
3624 value when building the stubs (so the stub knows where to jump. */
3625 bfd_vma target_value;
3626 asection *target_section;
3628 /* The symbol table entry, if any, that this was derived from. */
3629 struct ppc_link_hash_entry *h;
3630 struct plt_entry *plt_ent;
3632 /* And the reloc addend that this was derived from. */
3635 /* Where this stub is being called from, or, in the case of combined
3636 stub sections, the first input section in the group. */
3640 struct ppc_branch_hash_entry {
3642 /* Base hash table entry structure. */
3643 struct bfd_hash_entry root;
3645 /* Offset within branch lookup table. */
3646 unsigned int offset;
3648 /* Generation marker. */
3652 struct ppc_link_hash_entry
3654 struct elf_link_hash_entry elf;
3657 /* A pointer to the most recently used stub hash entry against this
3659 struct ppc_stub_hash_entry *stub_cache;
3661 /* A pointer to the next symbol starting with a '.' */
3662 struct ppc_link_hash_entry *next_dot_sym;
3665 /* Track dynamic relocs copied for this symbol. */
3666 struct ppc_dyn_relocs *dyn_relocs;
3668 /* Link between function code and descriptor symbols. */
3669 struct ppc_link_hash_entry *oh;
3671 /* Flag function code and descriptor symbols. */
3672 unsigned int is_func:1;
3673 unsigned int is_func_descriptor:1;
3674 unsigned int fake:1;
3676 /* Whether global opd/toc sym has been adjusted or not.
3677 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3678 should be set for all globals defined in any opd/toc section. */
3679 unsigned int adjust_done:1;
3681 /* Set if we twiddled this symbol to weak at some stage. */
3682 unsigned int was_undefined:1;
3684 /* Contexts in which symbol is used in the GOT (or TOC).
3685 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3686 corresponding relocs are encountered during check_relocs.
3687 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3688 indicate the corresponding GOT entry type is not needed.
3689 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3690 a TPREL one. We use a separate flag rather than setting TPREL
3691 just for convenience in distinguishing the two cases. */
3692 #define TLS_GD 1 /* GD reloc. */
3693 #define TLS_LD 2 /* LD reloc. */
3694 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3695 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3696 #define TLS_TLS 16 /* Any TLS reloc. */
3697 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3698 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3699 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3703 /* ppc64 ELF linker hash table. */
3705 struct ppc_link_hash_table
3707 struct elf_link_hash_table elf;
3709 /* The stub hash table. */
3710 struct bfd_hash_table stub_hash_table;
3712 /* Another hash table for plt_branch stubs. */
3713 struct bfd_hash_table branch_hash_table;
3715 /* Linker stub bfd. */
3718 /* Linker call-backs. */
3719 asection * (*add_stub_section) (const char *, asection *);
3720 void (*layout_sections_again) (void);
3722 /* Array to keep track of which stub sections have been created, and
3723 information on stub grouping. */
3725 /* This is the section to which stubs in the group will be attached. */
3727 /* The stub section. */
3729 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3733 /* Temp used when calculating TOC pointers. */
3736 /* Highest input section id. */
3739 /* Highest output section index. */
3742 /* Used when adding symbols. */
3743 struct ppc_link_hash_entry *dot_syms;
3745 /* List of input sections for each output section. */
3746 asection **input_list;
3748 /* Short-cuts to get to dynamic linker sections. */
3761 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3762 struct ppc_link_hash_entry *tls_get_addr;
3763 struct ppc_link_hash_entry *tls_get_addr_fd;
3766 unsigned long stub_count[ppc_stub_plt_call];
3768 /* Number of stubs against global syms. */
3769 unsigned long stub_globals;
3771 /* Set if we should emit symbols for stubs. */
3772 unsigned int emit_stub_syms:1;
3774 /* Set if __tls_get_addr optimization should not be done. */
3775 unsigned int no_tls_get_addr_opt:1;
3777 /* Support for multiple toc sections. */
3778 unsigned int no_multi_toc:1;
3779 unsigned int multi_toc_needed:1;
3782 unsigned int stub_error:1;
3784 /* Temp used by ppc64_elf_process_dot_syms. */
3785 unsigned int twiddled_syms:1;
3787 /* Incremented every time we size stubs. */
3788 unsigned int stub_iteration;
3790 /* Small local sym cache. */
3791 struct sym_cache sym_cache;
3794 /* Rename some of the generic section flags to better document how they
3796 #define has_toc_reloc has_gp_reloc
3797 #define makes_toc_func_call need_finalize_relax
3798 #define call_check_in_progress reloc_done
3800 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3802 #define ppc_hash_table(p) \
3803 ((struct ppc_link_hash_table *) ((p)->hash))
3805 #define ppc_stub_hash_lookup(table, string, create, copy) \
3806 ((struct ppc_stub_hash_entry *) \
3807 bfd_hash_lookup ((table), (string), (create), (copy)))
3809 #define ppc_branch_hash_lookup(table, string, create, copy) \
3810 ((struct ppc_branch_hash_entry *) \
3811 bfd_hash_lookup ((table), (string), (create), (copy)))
3813 /* Create an entry in the stub hash table. */
3815 static struct bfd_hash_entry *
3816 stub_hash_newfunc (struct bfd_hash_entry *entry,
3817 struct bfd_hash_table *table,
3820 /* Allocate the structure if it has not already been allocated by a
3824 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3829 /* Call the allocation method of the superclass. */
3830 entry = bfd_hash_newfunc (entry, table, string);
3833 struct ppc_stub_hash_entry *eh;
3835 /* Initialize the local fields. */
3836 eh = (struct ppc_stub_hash_entry *) entry;
3837 eh->stub_type = ppc_stub_none;
3838 eh->stub_sec = NULL;
3839 eh->stub_offset = 0;
3840 eh->target_value = 0;
3841 eh->target_section = NULL;
3849 /* Create an entry in the branch hash table. */
3851 static struct bfd_hash_entry *
3852 branch_hash_newfunc (struct bfd_hash_entry *entry,
3853 struct bfd_hash_table *table,
3856 /* Allocate the structure if it has not already been allocated by a
3860 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3865 /* Call the allocation method of the superclass. */
3866 entry = bfd_hash_newfunc (entry, table, string);
3869 struct ppc_branch_hash_entry *eh;
3871 /* Initialize the local fields. */
3872 eh = (struct ppc_branch_hash_entry *) entry;
3880 /* Create an entry in a ppc64 ELF linker hash table. */
3882 static struct bfd_hash_entry *
3883 link_hash_newfunc (struct bfd_hash_entry *entry,
3884 struct bfd_hash_table *table,
3887 /* Allocate the structure if it has not already been allocated by a
3891 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3896 /* Call the allocation method of the superclass. */
3897 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3900 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3902 memset (&eh->u.stub_cache, 0,
3903 (sizeof (struct ppc_link_hash_entry)
3904 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3906 /* When making function calls, old ABI code references function entry
3907 points (dot symbols), while new ABI code references the function
3908 descriptor symbol. We need to make any combination of reference and
3909 definition work together, without breaking archive linking.
3911 For a defined function "foo" and an undefined call to "bar":
3912 An old object defines "foo" and ".foo", references ".bar" (possibly
3914 A new object defines "foo" and references "bar".
3916 A new object thus has no problem with its undefined symbols being
3917 satisfied by definitions in an old object. On the other hand, the
3918 old object won't have ".bar" satisfied by a new object.
3920 Keep a list of newly added dot-symbols. */
3922 if (string[0] == '.')
3924 struct ppc_link_hash_table *htab;
3926 htab = (struct ppc_link_hash_table *) table;
3927 eh->u.next_dot_sym = htab->dot_syms;
3928 htab->dot_syms = eh;
3935 /* Create a ppc64 ELF linker hash table. */
3937 static struct bfd_link_hash_table *
3938 ppc64_elf_link_hash_table_create (bfd *abfd)
3940 struct ppc_link_hash_table *htab;
3941 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3943 htab = bfd_zmalloc (amt);
3947 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3948 sizeof (struct ppc_link_hash_entry)))
3954 /* Init the stub hash table too. */
3955 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3956 sizeof (struct ppc_stub_hash_entry)))
3959 /* And the branch hash table. */
3960 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3961 sizeof (struct ppc_branch_hash_entry)))
3964 /* Initializing two fields of the union is just cosmetic. We really
3965 only care about glist, but when compiled on a 32-bit host the
3966 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3967 debugger inspection of these fields look nicer. */
3968 htab->elf.init_got_refcount.refcount = 0;
3969 htab->elf.init_got_refcount.glist = NULL;
3970 htab->elf.init_plt_refcount.refcount = 0;
3971 htab->elf.init_plt_refcount.glist = NULL;
3972 htab->elf.init_got_offset.offset = 0;
3973 htab->elf.init_got_offset.glist = NULL;
3974 htab->elf.init_plt_offset.offset = 0;
3975 htab->elf.init_plt_offset.glist = NULL;
3977 return &htab->elf.root;
3980 /* Free the derived linker hash table. */
3983 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3985 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3987 bfd_hash_table_free (&ret->stub_hash_table);
3988 bfd_hash_table_free (&ret->branch_hash_table);
3989 _bfd_generic_link_hash_table_free (hash);
3992 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3995 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3997 struct ppc_link_hash_table *htab;
3999 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4001 /* Always hook our dynamic sections into the first bfd, which is the
4002 linker created stub bfd. This ensures that the GOT header is at
4003 the start of the output TOC section. */
4004 htab = ppc_hash_table (info);
4005 htab->stub_bfd = abfd;
4006 htab->elf.dynobj = abfd;
4009 /* Build a name for an entry in the stub hash table. */
4012 ppc_stub_name (const asection *input_section,
4013 const asection *sym_sec,
4014 const struct ppc_link_hash_entry *h,
4015 const Elf_Internal_Rela *rel)
4020 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4021 offsets from a sym as a branch target? In fact, we could
4022 probably assume the addend is always zero. */
4023 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4027 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4028 stub_name = bfd_malloc (len);
4029 if (stub_name == NULL)
4032 sprintf (stub_name, "%08x.%s+%x",
4033 input_section->id & 0xffffffff,
4034 h->elf.root.root.string,
4035 (int) rel->r_addend & 0xffffffff);
4039 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4040 stub_name = bfd_malloc (len);
4041 if (stub_name == NULL)
4044 sprintf (stub_name, "%08x.%x:%x+%x",
4045 input_section->id & 0xffffffff,
4046 sym_sec->id & 0xffffffff,
4047 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4048 (int) rel->r_addend & 0xffffffff);
4050 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4051 stub_name[len - 2] = 0;
4055 /* Look up an entry in the stub hash. Stub entries are cached because
4056 creating the stub name takes a bit of time. */
4058 static struct ppc_stub_hash_entry *
4059 ppc_get_stub_entry (const asection *input_section,
4060 const asection *sym_sec,
4061 struct ppc_link_hash_entry *h,
4062 const Elf_Internal_Rela *rel,
4063 struct ppc_link_hash_table *htab)
4065 struct ppc_stub_hash_entry *stub_entry;
4066 const asection *id_sec;
4068 /* If this input section is part of a group of sections sharing one
4069 stub section, then use the id of the first section in the group.
4070 Stub names need to include a section id, as there may well be
4071 more than one stub used to reach say, printf, and we need to
4072 distinguish between them. */
4073 id_sec = htab->stub_group[input_section->id].link_sec;
4075 if (h != NULL && h->u.stub_cache != NULL
4076 && h->u.stub_cache->h == h
4077 && h->u.stub_cache->id_sec == id_sec)
4079 stub_entry = h->u.stub_cache;
4085 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4086 if (stub_name == NULL)
4089 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4090 stub_name, FALSE, FALSE);
4092 h->u.stub_cache = stub_entry;
4100 /* Add a new stub entry to the stub hash. Not all fields of the new
4101 stub entry are initialised. */
4103 static struct ppc_stub_hash_entry *
4104 ppc_add_stub (const char *stub_name,
4106 struct ppc_link_hash_table *htab)
4110 struct ppc_stub_hash_entry *stub_entry;
4112 link_sec = htab->stub_group[section->id].link_sec;
4113 stub_sec = htab->stub_group[section->id].stub_sec;
4114 if (stub_sec == NULL)
4116 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4117 if (stub_sec == NULL)
4123 namelen = strlen (link_sec->name);
4124 len = namelen + sizeof (STUB_SUFFIX);
4125 s_name = bfd_alloc (htab->stub_bfd, len);
4129 memcpy (s_name, link_sec->name, namelen);
4130 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4131 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4132 if (stub_sec == NULL)
4134 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4136 htab->stub_group[section->id].stub_sec = stub_sec;
4139 /* Enter this entry into the linker stub hash table. */
4140 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4142 if (stub_entry == NULL)
4144 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
4145 section->owner, stub_name);
4149 stub_entry->stub_sec = stub_sec;
4150 stub_entry->stub_offset = 0;
4151 stub_entry->id_sec = link_sec;
4155 /* Create sections for linker generated code. */
4158 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4160 struct ppc_link_hash_table *htab;
4163 htab = ppc_hash_table (info);
4165 /* Create .sfpr for code to save and restore fp regs. */
4166 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4167 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4168 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4170 if (htab->sfpr == NULL
4171 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4174 /* Create .glink for lazy dynamic linking support. */
4175 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4177 if (htab->glink == NULL
4178 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4181 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4182 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4183 if (htab->iplt == NULL
4184 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4187 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4188 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4189 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4192 if (htab->reliplt == NULL
4193 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4196 /* Create branch lookup table for plt_branch stubs. */
4197 flags = (SEC_ALLOC | SEC_LOAD
4198 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4199 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4201 if (htab->brlt == NULL
4202 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4208 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4209 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4210 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4213 if (htab->relbrlt == NULL
4214 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4220 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4221 not already done. */
4224 create_got_section (bfd *abfd, struct bfd_link_info *info)
4226 asection *got, *relgot;
4228 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4230 if (!is_ppc64_elf (abfd))
4235 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4238 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4243 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4244 | SEC_LINKER_CREATED);
4246 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4248 || !bfd_set_section_alignment (abfd, got, 3))
4251 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4252 flags | SEC_READONLY);
4254 || ! bfd_set_section_alignment (abfd, relgot, 3))
4257 ppc64_elf_tdata (abfd)->got = got;
4258 ppc64_elf_tdata (abfd)->relgot = relgot;
4262 /* Create the dynamic sections, and set up shortcuts. */
4265 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4267 struct ppc_link_hash_table *htab;
4269 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4272 htab = ppc_hash_table (info);
4274 htab->got = bfd_get_section_by_name (dynobj, ".got");
4275 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4276 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4277 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
4279 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
4281 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4282 || (!info->shared && !htab->relbss))
4288 /* Follow indirect and warning symbol links. */
4290 static inline struct bfd_link_hash_entry *
4291 follow_link (struct bfd_link_hash_entry *h)
4293 while (h->type == bfd_link_hash_indirect
4294 || h->type == bfd_link_hash_warning)
4299 static inline struct elf_link_hash_entry *
4300 elf_follow_link (struct elf_link_hash_entry *h)
4302 return (struct elf_link_hash_entry *) follow_link (&h->root);
4305 static inline struct ppc_link_hash_entry *
4306 ppc_follow_link (struct ppc_link_hash_entry *h)
4308 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4311 /* Merge PLT info on FROM with that on TO. */
4314 move_plt_plist (struct ppc_link_hash_entry *from,
4315 struct ppc_link_hash_entry *to)
4317 if (from->elf.plt.plist != NULL)
4319 if (to->elf.plt.plist != NULL)
4321 struct plt_entry **entp;
4322 struct plt_entry *ent;
4324 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4326 struct plt_entry *dent;
4328 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4329 if (dent->addend == ent->addend)
4331 dent->plt.refcount += ent->plt.refcount;
4338 *entp = to->elf.plt.plist;
4341 to->elf.plt.plist = from->elf.plt.plist;
4342 from->elf.plt.plist = NULL;
4346 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4349 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4350 struct elf_link_hash_entry *dir,
4351 struct elf_link_hash_entry *ind)
4353 struct ppc_link_hash_entry *edir, *eind;
4355 edir = (struct ppc_link_hash_entry *) dir;
4356 eind = (struct ppc_link_hash_entry *) ind;
4358 /* Copy over any dynamic relocs we may have on the indirect sym. */
4359 if (eind->dyn_relocs != NULL)
4361 if (edir->dyn_relocs != NULL)
4363 struct ppc_dyn_relocs **pp;
4364 struct ppc_dyn_relocs *p;
4366 /* Add reloc counts against the indirect sym to the direct sym
4367 list. Merge any entries against the same section. */
4368 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4370 struct ppc_dyn_relocs *q;
4372 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4373 if (q->sec == p->sec)
4375 q->pc_count += p->pc_count;
4376 q->count += p->count;
4383 *pp = edir->dyn_relocs;
4386 edir->dyn_relocs = eind->dyn_relocs;
4387 eind->dyn_relocs = NULL;
4390 edir->is_func |= eind->is_func;
4391 edir->is_func_descriptor |= eind->is_func_descriptor;
4392 edir->tls_mask |= eind->tls_mask;
4393 if (eind->oh != NULL)
4394 edir->oh = ppc_follow_link (eind->oh);
4396 /* If called to transfer flags for a weakdef during processing
4397 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4398 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4399 if (!(ELIMINATE_COPY_RELOCS
4400 && eind->elf.root.type != bfd_link_hash_indirect
4401 && edir->elf.dynamic_adjusted))
4402 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4404 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4405 edir->elf.ref_regular |= eind->elf.ref_regular;
4406 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4407 edir->elf.needs_plt |= eind->elf.needs_plt;
4409 /* If we were called to copy over info for a weak sym, that's all. */
4410 if (eind->elf.root.type != bfd_link_hash_indirect)
4413 /* Copy over got entries that we may have already seen to the
4414 symbol which just became indirect. */
4415 if (eind->elf.got.glist != NULL)
4417 if (edir->elf.got.glist != NULL)
4419 struct got_entry **entp;
4420 struct got_entry *ent;
4422 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4424 struct got_entry *dent;
4426 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4427 if (dent->addend == ent->addend
4428 && dent->owner == ent->owner
4429 && dent->tls_type == ent->tls_type)
4431 dent->got.refcount += ent->got.refcount;
4438 *entp = edir->elf.got.glist;
4441 edir->elf.got.glist = eind->elf.got.glist;
4442 eind->elf.got.glist = NULL;
4445 /* And plt entries. */
4446 move_plt_plist (eind, edir);
4448 if (eind->elf.dynindx != -1)
4450 if (edir->elf.dynindx != -1)
4451 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4452 edir->elf.dynstr_index);
4453 edir->elf.dynindx = eind->elf.dynindx;
4454 edir->elf.dynstr_index = eind->elf.dynstr_index;
4455 eind->elf.dynindx = -1;
4456 eind->elf.dynstr_index = 0;
4460 /* Find the function descriptor hash entry from the given function code
4461 hash entry FH. Link the entries via their OH fields. */
4463 static struct ppc_link_hash_entry *
4464 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4466 struct ppc_link_hash_entry *fdh = fh->oh;
4470 const char *fd_name = fh->elf.root.root.string + 1;
4472 fdh = (struct ppc_link_hash_entry *)
4473 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4477 fdh->is_func_descriptor = 1;
4483 return ppc_follow_link (fdh);
4486 /* Make a fake function descriptor sym for the code sym FH. */
4488 static struct ppc_link_hash_entry *
4489 make_fdh (struct bfd_link_info *info,
4490 struct ppc_link_hash_entry *fh)
4494 struct bfd_link_hash_entry *bh;
4495 struct ppc_link_hash_entry *fdh;
4497 abfd = fh->elf.root.u.undef.abfd;
4498 newsym = bfd_make_empty_symbol (abfd);
4499 newsym->name = fh->elf.root.root.string + 1;
4500 newsym->section = bfd_und_section_ptr;
4502 newsym->flags = BSF_WEAK;
4505 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4506 newsym->flags, newsym->section,
4507 newsym->value, NULL, FALSE, FALSE,
4511 fdh = (struct ppc_link_hash_entry *) bh;
4512 fdh->elf.non_elf = 0;
4514 fdh->is_func_descriptor = 1;
4521 /* Fix function descriptor symbols defined in .opd sections to be
4525 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4526 struct bfd_link_info *info,
4527 Elf_Internal_Sym *isym,
4528 const char **name ATTRIBUTE_UNUSED,
4529 flagword *flags ATTRIBUTE_UNUSED,
4531 bfd_vma *value ATTRIBUTE_UNUSED)
4533 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4534 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4535 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4537 else if (*sec != NULL
4538 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4539 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4544 /* This function makes an old ABI object reference to ".bar" cause the
4545 inclusion of a new ABI object archive that defines "bar".
4546 NAME is a symbol defined in an archive. Return a symbol in the hash
4547 table that might be satisfied by the archive symbols. */
4549 static struct elf_link_hash_entry *
4550 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4551 struct bfd_link_info *info,
4554 struct elf_link_hash_entry *h;
4558 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4560 /* Don't return this sym if it is a fake function descriptor
4561 created by add_symbol_adjust. */
4562 && !(h->root.type == bfd_link_hash_undefweak
4563 && ((struct ppc_link_hash_entry *) h)->fake))
4569 len = strlen (name);
4570 dot_name = bfd_alloc (abfd, len + 2);
4571 if (dot_name == NULL)
4572 return (struct elf_link_hash_entry *) 0 - 1;
4574 memcpy (dot_name + 1, name, len + 1);
4575 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4576 bfd_release (abfd, dot_name);
4580 /* This function satisfies all old ABI object references to ".bar" if a
4581 new ABI object defines "bar". Well, at least, undefined dot symbols
4582 are made weak. This stops later archive searches from including an
4583 object if we already have a function descriptor definition. It also
4584 prevents the linker complaining about undefined symbols.
4585 We also check and correct mismatched symbol visibility here. The
4586 most restrictive visibility of the function descriptor and the
4587 function entry symbol is used. */
4590 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4592 struct ppc_link_hash_table *htab;
4593 struct ppc_link_hash_entry *fdh;
4595 if (eh->elf.root.type == bfd_link_hash_indirect)
4598 if (eh->elf.root.type == bfd_link_hash_warning)
4599 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4601 if (eh->elf.root.root.string[0] != '.')
4604 htab = ppc_hash_table (info);
4605 fdh = lookup_fdh (eh, htab);
4608 if (!info->relocatable
4609 && (eh->elf.root.type == bfd_link_hash_undefined
4610 || eh->elf.root.type == bfd_link_hash_undefweak)
4611 && eh->elf.ref_regular)
4613 /* Make an undefweak function descriptor sym, which is enough to
4614 pull in an --as-needed shared lib, but won't cause link
4615 errors. Archives are handled elsewhere. */
4616 fdh = make_fdh (info, eh);
4619 fdh->elf.ref_regular = 1;
4624 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4625 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4626 if (entry_vis < descr_vis)
4627 fdh->elf.other += entry_vis - descr_vis;
4628 else if (entry_vis > descr_vis)
4629 eh->elf.other += descr_vis - entry_vis;
4631 if ((fdh->elf.root.type == bfd_link_hash_defined
4632 || fdh->elf.root.type == bfd_link_hash_defweak)
4633 && eh->elf.root.type == bfd_link_hash_undefined)
4635 eh->elf.root.type = bfd_link_hash_undefweak;
4636 eh->was_undefined = 1;
4637 htab->twiddled_syms = 1;
4644 /* Process list of dot-symbols we made in link_hash_newfunc. */
4647 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4649 struct ppc_link_hash_table *htab;
4650 struct ppc_link_hash_entry **p, *eh;
4652 htab = ppc_hash_table (info);
4653 if (!is_ppc64_elf (info->output_bfd))
4656 if (is_ppc64_elf (ibfd))
4658 p = &htab->dot_syms;
4659 while ((eh = *p) != NULL)
4662 if (!add_symbol_adjust (eh, info))
4664 p = &eh->u.next_dot_sym;
4668 /* Clear the list for non-ppc64 input files. */
4669 p = &htab->dot_syms;
4670 while ((eh = *p) != NULL)
4673 p = &eh->u.next_dot_sym;
4676 /* We need to fix the undefs list for any syms we have twiddled to
4678 if (htab->twiddled_syms)
4680 bfd_link_repair_undef_list (&htab->elf.root);
4681 htab->twiddled_syms = 0;
4686 /* Undo hash table changes when an --as-needed input file is determined
4687 not to be needed. */
4690 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4691 struct bfd_link_info *info)
4693 ppc_hash_table (info)->dot_syms = NULL;
4697 static struct plt_entry **
4698 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4699 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4701 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4702 struct plt_entry **local_plt;
4703 char *local_got_tls_masks;
4705 if (local_got_ents == NULL)
4707 bfd_size_type size = symtab_hdr->sh_info;
4709 size *= (sizeof (*local_got_ents)
4710 + sizeof (*local_plt)
4711 + sizeof (*local_got_tls_masks));
4712 local_got_ents = bfd_zalloc (abfd, size);
4713 if (local_got_ents == NULL)
4715 elf_local_got_ents (abfd) = local_got_ents;
4718 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4720 struct got_entry *ent;
4722 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4723 if (ent->addend == r_addend
4724 && ent->owner == abfd
4725 && ent->tls_type == tls_type)
4729 bfd_size_type amt = sizeof (*ent);
4730 ent = bfd_alloc (abfd, amt);
4733 ent->next = local_got_ents[r_symndx];
4734 ent->addend = r_addend;
4736 ent->tls_type = tls_type;
4737 ent->got.refcount = 0;
4738 local_got_ents[r_symndx] = ent;
4740 ent->got.refcount += 1;
4743 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4744 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
4745 local_got_tls_masks[r_symndx] |= tls_type;
4747 return local_plt + r_symndx;
4751 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4753 struct plt_entry *ent;
4755 for (ent = *plist; ent != NULL; ent = ent->next)
4756 if (ent->addend == addend)
4760 bfd_size_type amt = sizeof (*ent);
4761 ent = bfd_alloc (abfd, amt);
4765 ent->addend = addend;
4766 ent->plt.refcount = 0;
4769 ent->plt.refcount += 1;
4774 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4776 return (r_type == R_PPC64_REL24
4777 || r_type == R_PPC64_REL14
4778 || r_type == R_PPC64_REL14_BRTAKEN
4779 || r_type == R_PPC64_REL14_BRNTAKEN
4780 || r_type == R_PPC64_ADDR24
4781 || r_type == R_PPC64_ADDR14
4782 || r_type == R_PPC64_ADDR14_BRTAKEN
4783 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4786 /* Look through the relocs for a section during the first phase, and
4787 calculate needed space in the global offset table, procedure
4788 linkage table, and dynamic reloc sections. */
4791 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4792 asection *sec, const Elf_Internal_Rela *relocs)
4794 struct ppc_link_hash_table *htab;
4795 Elf_Internal_Shdr *symtab_hdr;
4796 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4797 const Elf_Internal_Rela *rel;
4798 const Elf_Internal_Rela *rel_end;
4800 asection **opd_sym_map;
4801 struct elf_link_hash_entry *tga, *dottga;
4803 if (info->relocatable)
4806 /* Don't do anything special with non-loaded, non-alloced sections.
4807 In particular, any relocs in such sections should not affect GOT
4808 and PLT reference counting (ie. we don't allow them to create GOT
4809 or PLT entries), there's no possibility or desire to optimize TLS
4810 relocs, and there's not much point in propagating relocs to shared
4811 libs that the dynamic linker won't relocate. */
4812 if ((sec->flags & SEC_ALLOC) == 0)
4815 BFD_ASSERT (is_ppc64_elf (abfd));
4817 htab = ppc_hash_table (info);
4818 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4819 FALSE, FALSE, TRUE);
4820 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4821 FALSE, FALSE, TRUE);
4822 symtab_hdr = &elf_symtab_hdr (abfd);
4824 sym_hashes = elf_sym_hashes (abfd);
4825 sym_hashes_end = (sym_hashes
4826 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4827 - symtab_hdr->sh_info);
4831 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4833 /* Garbage collection needs some extra help with .opd sections.
4834 We don't want to necessarily keep everything referenced by
4835 relocs in .opd, as that would keep all functions. Instead,
4836 if we reference an .opd symbol (a function descriptor), we
4837 want to keep the function code symbol's section. This is
4838 easy for global symbols, but for local syms we need to keep
4839 information about the associated function section. */
4842 amt = sec->size * sizeof (*opd_sym_map) / 8;
4843 opd_sym_map = bfd_zalloc (abfd, amt);
4844 if (opd_sym_map == NULL)
4846 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4847 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4848 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4851 if (htab->sfpr == NULL
4852 && !create_linkage_sections (htab->elf.dynobj, info))
4855 rel_end = relocs + sec->reloc_count;
4856 for (rel = relocs; rel < rel_end; rel++)
4858 unsigned long r_symndx;
4859 struct elf_link_hash_entry *h;
4860 enum elf_ppc64_reloc_type r_type;
4862 struct _ppc64_elf_section_data *ppc64_sec;
4863 struct plt_entry **ifunc;
4865 r_symndx = ELF64_R_SYM (rel->r_info);
4866 if (r_symndx < symtab_hdr->sh_info)
4870 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4871 h = elf_follow_link (h);
4878 if (h->type == STT_GNU_IFUNC)
4881 ifunc = &h->plt.plist;
4886 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4891 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4893 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4894 rel->r_addend, PLT_IFUNC);
4899 r_type = ELF64_R_TYPE (rel->r_info);
4900 if (is_branch_reloc (r_type))
4902 if (h != NULL && (h == tga || h == dottga))
4905 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
4906 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
4907 /* We have a new-style __tls_get_addr call with a marker
4911 /* Mark this section as having an old-style call. */
4912 sec->has_tls_get_addr_call = 1;
4915 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4917 && !update_plt_info (abfd, ifunc, rel->r_addend))
4925 /* These special tls relocs tie a call to __tls_get_addr with
4926 its parameter symbol. */
4929 case R_PPC64_GOT_TLSLD16:
4930 case R_PPC64_GOT_TLSLD16_LO:
4931 case R_PPC64_GOT_TLSLD16_HI:
4932 case R_PPC64_GOT_TLSLD16_HA:
4933 tls_type = TLS_TLS | TLS_LD;
4936 case R_PPC64_GOT_TLSGD16:
4937 case R_PPC64_GOT_TLSGD16_LO:
4938 case R_PPC64_GOT_TLSGD16_HI:
4939 case R_PPC64_GOT_TLSGD16_HA:
4940 tls_type = TLS_TLS | TLS_GD;
4943 case R_PPC64_GOT_TPREL16_DS:
4944 case R_PPC64_GOT_TPREL16_LO_DS:
4945 case R_PPC64_GOT_TPREL16_HI:
4946 case R_PPC64_GOT_TPREL16_HA:
4947 if (!info->executable)
4948 info->flags |= DF_STATIC_TLS;
4949 tls_type = TLS_TLS | TLS_TPREL;
4952 case R_PPC64_GOT_DTPREL16_DS:
4953 case R_PPC64_GOT_DTPREL16_LO_DS:
4954 case R_PPC64_GOT_DTPREL16_HI:
4955 case R_PPC64_GOT_DTPREL16_HA:
4956 tls_type = TLS_TLS | TLS_DTPREL;
4958 sec->has_tls_reloc = 1;
4962 case R_PPC64_GOT16_DS:
4963 case R_PPC64_GOT16_HA:
4964 case R_PPC64_GOT16_HI:
4965 case R_PPC64_GOT16_LO:
4966 case R_PPC64_GOT16_LO_DS:
4967 /* This symbol requires a global offset table entry. */
4968 sec->has_toc_reloc = 1;
4969 if (ppc64_elf_tdata (abfd)->got == NULL
4970 && !create_got_section (abfd, info))
4975 struct ppc_link_hash_entry *eh;
4976 struct got_entry *ent;
4978 eh = (struct ppc_link_hash_entry *) h;
4979 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4980 if (ent->addend == rel->r_addend
4981 && ent->owner == abfd
4982 && ent->tls_type == tls_type)
4986 bfd_size_type amt = sizeof (*ent);
4987 ent = bfd_alloc (abfd, amt);
4990 ent->next = eh->elf.got.glist;
4991 ent->addend = rel->r_addend;
4993 ent->tls_type = tls_type;
4994 ent->got.refcount = 0;
4995 eh->elf.got.glist = ent;
4997 ent->got.refcount += 1;
4998 eh->tls_mask |= tls_type;
5001 /* This is a global offset table entry for a local symbol. */
5002 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5003 rel->r_addend, tls_type))
5007 case R_PPC64_PLT16_HA:
5008 case R_PPC64_PLT16_HI:
5009 case R_PPC64_PLT16_LO:
5012 /* This symbol requires a procedure linkage table entry. We
5013 actually build the entry in adjust_dynamic_symbol,
5014 because this might be a case of linking PIC code without
5015 linking in any dynamic objects, in which case we don't
5016 need to generate a procedure linkage table after all. */
5019 /* It does not make sense to have a procedure linkage
5020 table entry for a local symbol. */
5021 bfd_set_error (bfd_error_bad_value);
5026 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5029 if (h->root.root.string[0] == '.'
5030 && h->root.root.string[1] != '\0')
5031 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5035 /* The following relocations don't need to propagate the
5036 relocation if linking a shared object since they are
5037 section relative. */
5038 case R_PPC64_SECTOFF:
5039 case R_PPC64_SECTOFF_LO:
5040 case R_PPC64_SECTOFF_HI:
5041 case R_PPC64_SECTOFF_HA:
5042 case R_PPC64_SECTOFF_DS:
5043 case R_PPC64_SECTOFF_LO_DS:
5044 case R_PPC64_DTPREL16:
5045 case R_PPC64_DTPREL16_LO:
5046 case R_PPC64_DTPREL16_HI:
5047 case R_PPC64_DTPREL16_HA:
5048 case R_PPC64_DTPREL16_DS:
5049 case R_PPC64_DTPREL16_LO_DS:
5050 case R_PPC64_DTPREL16_HIGHER:
5051 case R_PPC64_DTPREL16_HIGHERA:
5052 case R_PPC64_DTPREL16_HIGHEST:
5053 case R_PPC64_DTPREL16_HIGHESTA:
5058 case R_PPC64_REL16_LO:
5059 case R_PPC64_REL16_HI:
5060 case R_PPC64_REL16_HA:
5064 case R_PPC64_TOC16_LO:
5065 case R_PPC64_TOC16_HI:
5066 case R_PPC64_TOC16_HA:
5067 case R_PPC64_TOC16_DS:
5068 case R_PPC64_TOC16_LO_DS:
5069 sec->has_toc_reloc = 1;
5072 /* This relocation describes the C++ object vtable hierarchy.
5073 Reconstruct it for later use during GC. */
5074 case R_PPC64_GNU_VTINHERIT:
5075 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5079 /* This relocation describes which C++ vtable entries are actually
5080 used. Record for later use during GC. */
5081 case R_PPC64_GNU_VTENTRY:
5082 BFD_ASSERT (h != NULL);
5084 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5089 case R_PPC64_REL14_BRTAKEN:
5090 case R_PPC64_REL14_BRNTAKEN:
5092 asection *dest = NULL;
5094 /* Heuristic: If jumping outside our section, chances are
5095 we are going to need a stub. */
5098 /* If the sym is weak it may be overridden later, so
5099 don't assume we know where a weak sym lives. */
5100 if (h->root.type == bfd_link_hash_defined)
5101 dest = h->root.u.def.section;
5105 Elf_Internal_Sym *isym;
5107 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5112 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5116 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5121 if (h != NULL && ifunc == NULL)
5123 /* We may need a .plt entry if the function this reloc
5124 refers to is in a shared lib. */
5125 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5128 if (h->root.root.string[0] == '.'
5129 && h->root.root.string[1] != '\0')
5130 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5131 if (h == tga || h == dottga)
5132 sec->has_tls_reloc = 1;
5136 case R_PPC64_TPREL64:
5137 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5138 if (!info->executable)
5139 info->flags |= DF_STATIC_TLS;
5142 case R_PPC64_DTPMOD64:
5143 if (rel + 1 < rel_end
5144 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5145 && rel[1].r_offset == rel->r_offset + 8)
5146 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5148 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5151 case R_PPC64_DTPREL64:
5152 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5154 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5155 && rel[-1].r_offset == rel->r_offset - 8)
5156 /* This is the second reloc of a dtpmod, dtprel pair.
5157 Don't mark with TLS_DTPREL. */
5161 sec->has_tls_reloc = 1;
5164 struct ppc_link_hash_entry *eh;
5165 eh = (struct ppc_link_hash_entry *) h;
5166 eh->tls_mask |= tls_type;
5169 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5170 rel->r_addend, tls_type))
5173 ppc64_sec = ppc64_elf_section_data (sec);
5174 if (ppc64_sec->sec_type != sec_toc)
5178 /* One extra to simplify get_tls_mask. */
5179 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5180 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5181 if (ppc64_sec->u.toc.symndx == NULL)
5183 amt = sec->size * sizeof (bfd_vma) / 8;
5184 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5185 if (ppc64_sec->u.toc.add == NULL)
5187 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5188 ppc64_sec->sec_type = sec_toc;
5190 BFD_ASSERT (rel->r_offset % 8 == 0);
5191 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5192 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5194 /* Mark the second slot of a GD or LD entry.
5195 -1 to indicate GD and -2 to indicate LD. */
5196 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5197 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5198 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5199 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5202 case R_PPC64_TPREL16:
5203 case R_PPC64_TPREL16_LO:
5204 case R_PPC64_TPREL16_HI:
5205 case R_PPC64_TPREL16_HA:
5206 case R_PPC64_TPREL16_DS:
5207 case R_PPC64_TPREL16_LO_DS:
5208 case R_PPC64_TPREL16_HIGHER:
5209 case R_PPC64_TPREL16_HIGHERA:
5210 case R_PPC64_TPREL16_HIGHEST:
5211 case R_PPC64_TPREL16_HIGHESTA:
5214 if (!info->executable)
5215 info->flags |= DF_STATIC_TLS;
5220 case R_PPC64_ADDR64:
5221 if (opd_sym_map != NULL
5222 && rel + 1 < rel_end
5223 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5227 if (h->root.root.string[0] == '.'
5228 && h->root.root.string[1] != 0
5229 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5232 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5237 Elf_Internal_Sym *isym;
5239 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5244 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5245 if (s != NULL && s != sec)
5246 opd_sym_map[rel->r_offset / 8] = s;
5254 case R_PPC64_ADDR14:
5255 case R_PPC64_ADDR14_BRNTAKEN:
5256 case R_PPC64_ADDR14_BRTAKEN:
5257 case R_PPC64_ADDR16:
5258 case R_PPC64_ADDR16_DS:
5259 case R_PPC64_ADDR16_HA:
5260 case R_PPC64_ADDR16_HI:
5261 case R_PPC64_ADDR16_HIGHER:
5262 case R_PPC64_ADDR16_HIGHERA:
5263 case R_PPC64_ADDR16_HIGHEST:
5264 case R_PPC64_ADDR16_HIGHESTA:
5265 case R_PPC64_ADDR16_LO:
5266 case R_PPC64_ADDR16_LO_DS:
5267 case R_PPC64_ADDR24:
5268 case R_PPC64_ADDR32:
5269 case R_PPC64_UADDR16:
5270 case R_PPC64_UADDR32:
5271 case R_PPC64_UADDR64:
5273 if (h != NULL && !info->shared)
5274 /* We may need a copy reloc. */
5277 /* Don't propagate .opd relocs. */
5278 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5281 /* If we are creating a shared library, and this is a reloc
5282 against a global symbol, or a non PC relative reloc
5283 against a local symbol, then we need to copy the reloc
5284 into the shared library. However, if we are linking with
5285 -Bsymbolic, we do not need to copy a reloc against a
5286 global symbol which is defined in an object we are
5287 including in the link (i.e., DEF_REGULAR is set). At
5288 this point we have not seen all the input files, so it is
5289 possible that DEF_REGULAR is not set now but will be set
5290 later (it is never cleared). In case of a weak definition,
5291 DEF_REGULAR may be cleared later by a strong definition in
5292 a shared library. We account for that possibility below by
5293 storing information in the dyn_relocs field of the hash
5294 table entry. A similar situation occurs when creating
5295 shared libraries and symbol visibility changes render the
5298 If on the other hand, we are creating an executable, we
5299 may need to keep relocations for symbols satisfied by a
5300 dynamic library if we manage to avoid copy relocs for the
5304 && (must_be_dyn_reloc (info, r_type)
5306 && (! info->symbolic
5307 || h->root.type == bfd_link_hash_defweak
5308 || !h->def_regular))))
5309 || (ELIMINATE_COPY_RELOCS
5312 && (h->root.type == bfd_link_hash_defweak
5313 || !h->def_regular))
5317 struct ppc_dyn_relocs *p;
5318 struct ppc_dyn_relocs **head;
5320 /* We must copy these reloc types into the output file.
5321 Create a reloc section in dynobj and make room for
5325 sreloc = _bfd_elf_make_dynamic_reloc_section
5326 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5332 /* If this is a global symbol, we count the number of
5333 relocations we need for this symbol. */
5336 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5340 /* Track dynamic relocs needed for local syms too.
5341 We really need local syms available to do this
5345 Elf_Internal_Sym *isym;
5347 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5352 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5356 vpp = &elf_section_data (s)->local_dynrel;
5357 head = (struct ppc_dyn_relocs **) vpp;
5361 if (p == NULL || p->sec != sec)
5363 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5374 if (!must_be_dyn_reloc (info, r_type))
5387 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5388 of the code entry point, and its section. */
5391 opd_entry_value (asection *opd_sec,
5393 asection **code_sec,
5396 bfd *opd_bfd = opd_sec->owner;
5397 Elf_Internal_Rela *relocs;
5398 Elf_Internal_Rela *lo, *hi, *look;
5401 /* No relocs implies we are linking a --just-symbols object. */
5402 if (opd_sec->reloc_count == 0)
5406 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
5407 return (bfd_vma) -1;
5409 if (code_sec != NULL)
5411 asection *sec, *likely = NULL;
5412 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5414 && (sec->flags & SEC_LOAD) != 0
5415 && (sec->flags & SEC_ALLOC) != 0)
5420 if (code_off != NULL)
5421 *code_off = val - likely->vma;
5427 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5429 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5431 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5433 /* Go find the opd reloc at the sym address. */
5435 BFD_ASSERT (lo != NULL);
5436 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5440 look = lo + (hi - lo) / 2;
5441 if (look->r_offset < offset)
5443 else if (look->r_offset > offset)
5447 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5449 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5450 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5452 unsigned long symndx = ELF64_R_SYM (look->r_info);
5455 if (symndx < symtab_hdr->sh_info)
5457 Elf_Internal_Sym *sym;
5459 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5462 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5463 symtab_hdr->sh_info,
5464 0, NULL, NULL, NULL);
5467 symtab_hdr->contents = (bfd_byte *) sym;
5471 val = sym->st_value;
5472 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5473 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5477 struct elf_link_hash_entry **sym_hashes;
5478 struct elf_link_hash_entry *rh;
5480 sym_hashes = elf_sym_hashes (opd_bfd);
5481 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5482 rh = elf_follow_link (rh);
5483 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5484 || rh->root.type == bfd_link_hash_defweak);
5485 val = rh->root.u.def.value;
5486 sec = rh->root.u.def.section;
5488 val += look->r_addend;
5489 if (code_off != NULL)
5491 if (code_sec != NULL)
5493 if (sec != NULL && sec->output_section != NULL)
5494 val += sec->output_section->vma + sec->output_offset;
5503 /* If FDH is a function descriptor symbol, return the associated code
5504 entry symbol if it is defined. Return NULL otherwise. */
5506 static struct ppc_link_hash_entry *
5507 defined_code_entry (struct ppc_link_hash_entry *fdh)
5509 if (fdh->is_func_descriptor)
5511 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5512 if (fh->elf.root.type == bfd_link_hash_defined
5513 || fh->elf.root.type == bfd_link_hash_defweak)
5519 /* If FH is a function code entry symbol, return the associated
5520 function descriptor symbol if it is defined. Return NULL otherwise. */
5522 static struct ppc_link_hash_entry *
5523 defined_func_desc (struct ppc_link_hash_entry *fh)
5526 && fh->oh->is_func_descriptor)
5528 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5529 if (fdh->elf.root.type == bfd_link_hash_defined
5530 || fdh->elf.root.type == bfd_link_hash_defweak)
5536 /* Mark all our entry sym sections, both opd and code section. */
5539 ppc64_elf_gc_keep (struct bfd_link_info *info)
5541 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5542 struct bfd_sym_chain *sym;
5544 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5546 struct ppc_link_hash_entry *eh, *fh;
5549 eh = (struct ppc_link_hash_entry *)
5550 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5553 if (eh->elf.root.type != bfd_link_hash_defined
5554 && eh->elf.root.type != bfd_link_hash_defweak)
5557 fh = defined_code_entry (eh);
5560 sec = fh->elf.root.u.def.section;
5561 sec->flags |= SEC_KEEP;
5563 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5564 && opd_entry_value (eh->elf.root.u.def.section,
5565 eh->elf.root.u.def.value,
5566 &sec, NULL) != (bfd_vma) -1)
5567 sec->flags |= SEC_KEEP;
5569 sec = eh->elf.root.u.def.section;
5570 sec->flags |= SEC_KEEP;
5574 /* Mark sections containing dynamically referenced symbols. When
5575 building shared libraries, we must assume that any visible symbol is
5579 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5581 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5582 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5583 struct ppc_link_hash_entry *fdh;
5585 if (eh->elf.root.type == bfd_link_hash_warning)
5586 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5588 /* Dynamic linking info is on the func descriptor sym. */
5589 fdh = defined_func_desc (eh);
5593 if ((eh->elf.root.type == bfd_link_hash_defined
5594 || eh->elf.root.type == bfd_link_hash_defweak)
5595 && (eh->elf.ref_dynamic
5596 || (!info->executable
5597 && eh->elf.def_regular
5598 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5599 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5602 struct ppc_link_hash_entry *fh;
5604 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5606 /* Function descriptor syms cause the associated
5607 function code sym section to be marked. */
5608 fh = defined_code_entry (eh);
5611 code_sec = fh->elf.root.u.def.section;
5612 code_sec->flags |= SEC_KEEP;
5614 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5615 && opd_entry_value (eh->elf.root.u.def.section,
5616 eh->elf.root.u.def.value,
5617 &code_sec, NULL) != (bfd_vma) -1)
5618 code_sec->flags |= SEC_KEEP;
5624 /* Return the section that should be marked against GC for a given
5628 ppc64_elf_gc_mark_hook (asection *sec,
5629 struct bfd_link_info *info ATTRIBUTE_UNUSED,
5630 Elf_Internal_Rela *rel,
5631 struct elf_link_hash_entry *h,
5632 Elf_Internal_Sym *sym)
5636 /* Syms return NULL if we're marking .opd, so we avoid marking all
5637 function sections, as all functions are referenced in .opd. */
5639 if (get_opd_info (sec) != NULL)
5644 enum elf_ppc64_reloc_type r_type;
5645 struct ppc_link_hash_entry *eh, *fh, *fdh;
5647 r_type = ELF64_R_TYPE (rel->r_info);
5650 case R_PPC64_GNU_VTINHERIT:
5651 case R_PPC64_GNU_VTENTRY:
5655 switch (h->root.type)
5657 case bfd_link_hash_defined:
5658 case bfd_link_hash_defweak:
5659 eh = (struct ppc_link_hash_entry *) h;
5660 fdh = defined_func_desc (eh);
5664 /* Function descriptor syms cause the associated
5665 function code sym section to be marked. */
5666 fh = defined_code_entry (eh);
5669 /* They also mark their opd section. */
5670 eh->elf.root.u.def.section->gc_mark = 1;
5672 rsec = fh->elf.root.u.def.section;
5674 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5675 && opd_entry_value (eh->elf.root.u.def.section,
5676 eh->elf.root.u.def.value,
5677 &rsec, NULL) != (bfd_vma) -1)
5678 eh->elf.root.u.def.section->gc_mark = 1;
5680 rsec = h->root.u.def.section;
5683 case bfd_link_hash_common:
5684 rsec = h->root.u.c.p->section;
5694 struct _opd_sec_data *opd;
5696 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5697 opd = get_opd_info (rsec);
5698 if (opd != NULL && opd->func_sec != NULL)
5702 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5709 /* Update the .got, .plt. and dynamic reloc reference counts for the
5710 section being removed. */
5713 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5714 asection *sec, const Elf_Internal_Rela *relocs)
5716 struct ppc_link_hash_table *htab;
5717 Elf_Internal_Shdr *symtab_hdr;
5718 struct elf_link_hash_entry **sym_hashes;
5719 struct got_entry **local_got_ents;
5720 const Elf_Internal_Rela *rel, *relend;
5722 if (info->relocatable)
5725 if ((sec->flags & SEC_ALLOC) == 0)
5728 elf_section_data (sec)->local_dynrel = NULL;
5730 htab = ppc_hash_table (info);
5731 symtab_hdr = &elf_symtab_hdr (abfd);
5732 sym_hashes = elf_sym_hashes (abfd);
5733 local_got_ents = elf_local_got_ents (abfd);
5735 relend = relocs + sec->reloc_count;
5736 for (rel = relocs; rel < relend; rel++)
5738 unsigned long r_symndx;
5739 enum elf_ppc64_reloc_type r_type;
5740 struct elf_link_hash_entry *h = NULL;
5743 r_symndx = ELF64_R_SYM (rel->r_info);
5744 r_type = ELF64_R_TYPE (rel->r_info);
5745 if (r_symndx >= symtab_hdr->sh_info)
5747 struct ppc_link_hash_entry *eh;
5748 struct ppc_dyn_relocs **pp;
5749 struct ppc_dyn_relocs *p;
5751 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5752 h = elf_follow_link (h);
5753 eh = (struct ppc_link_hash_entry *) h;
5755 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5758 /* Everything must go for SEC. */
5764 if (is_branch_reloc (r_type))
5766 struct plt_entry **ifunc = NULL;
5769 if (h->type == STT_GNU_IFUNC)
5770 ifunc = &h->plt.plist;
5772 else if (local_got_ents != NULL)
5774 struct plt_entry **local_plt = (struct plt_entry **)
5775 (local_got_ents + symtab_hdr->sh_info);
5776 char *local_got_tls_masks = (char *)
5777 (local_plt + symtab_hdr->sh_info);
5778 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5779 ifunc = local_plt + r_symndx;
5783 struct plt_entry *ent;
5785 for (ent = *ifunc; ent != NULL; ent = ent->next)
5786 if (ent->addend == rel->r_addend)
5790 if (ent->plt.refcount > 0)
5791 ent->plt.refcount -= 1;
5798 case R_PPC64_GOT_TLSLD16:
5799 case R_PPC64_GOT_TLSLD16_LO:
5800 case R_PPC64_GOT_TLSLD16_HI:
5801 case R_PPC64_GOT_TLSLD16_HA:
5802 tls_type = TLS_TLS | TLS_LD;
5805 case R_PPC64_GOT_TLSGD16:
5806 case R_PPC64_GOT_TLSGD16_LO:
5807 case R_PPC64_GOT_TLSGD16_HI:
5808 case R_PPC64_GOT_TLSGD16_HA:
5809 tls_type = TLS_TLS | TLS_GD;
5812 case R_PPC64_GOT_TPREL16_DS:
5813 case R_PPC64_GOT_TPREL16_LO_DS:
5814 case R_PPC64_GOT_TPREL16_HI:
5815 case R_PPC64_GOT_TPREL16_HA:
5816 tls_type = TLS_TLS | TLS_TPREL;
5819 case R_PPC64_GOT_DTPREL16_DS:
5820 case R_PPC64_GOT_DTPREL16_LO_DS:
5821 case R_PPC64_GOT_DTPREL16_HI:
5822 case R_PPC64_GOT_DTPREL16_HA:
5823 tls_type = TLS_TLS | TLS_DTPREL;
5827 case R_PPC64_GOT16_DS:
5828 case R_PPC64_GOT16_HA:
5829 case R_PPC64_GOT16_HI:
5830 case R_PPC64_GOT16_LO:
5831 case R_PPC64_GOT16_LO_DS:
5834 struct got_entry *ent;
5839 ent = local_got_ents[r_symndx];
5841 for (; ent != NULL; ent = ent->next)
5842 if (ent->addend == rel->r_addend
5843 && ent->owner == abfd
5844 && ent->tls_type == tls_type)
5848 if (ent->got.refcount > 0)
5849 ent->got.refcount -= 1;
5853 case R_PPC64_PLT16_HA:
5854 case R_PPC64_PLT16_HI:
5855 case R_PPC64_PLT16_LO:
5859 case R_PPC64_REL14_BRNTAKEN:
5860 case R_PPC64_REL14_BRTAKEN:
5864 struct plt_entry *ent;
5866 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5867 if (ent->addend == rel->r_addend)
5871 if (ent->plt.refcount > 0)
5872 ent->plt.refcount -= 1;
5883 /* The maximum size of .sfpr. */
5884 #define SFPR_MAX (218*4)
5886 struct sfpr_def_parms
5888 const char name[12];
5889 unsigned char lo, hi;
5890 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5891 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5894 /* Auto-generate _save*, _rest* functions in .sfpr. */
5897 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5899 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5901 size_t len = strlen (parm->name);
5902 bfd_boolean writing = FALSE;
5905 memcpy (sym, parm->name, len);
5908 for (i = parm->lo; i <= parm->hi; i++)
5910 struct elf_link_hash_entry *h;
5912 sym[len + 0] = i / 10 + '0';
5913 sym[len + 1] = i % 10 + '0';
5914 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5918 h->root.type = bfd_link_hash_defined;
5919 h->root.u.def.section = htab->sfpr;
5920 h->root.u.def.value = htab->sfpr->size;
5923 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5925 if (htab->sfpr->contents == NULL)
5927 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5928 if (htab->sfpr->contents == NULL)
5934 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5936 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5938 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5939 htab->sfpr->size = p - htab->sfpr->contents;
5947 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5949 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5954 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5956 p = savegpr0 (abfd, p, r);
5957 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5959 bfd_put_32 (abfd, BLR, p);
5964 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5966 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5971 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5973 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5975 p = restgpr0 (abfd, p, r);
5976 bfd_put_32 (abfd, MTLR_R0, p);
5980 p = restgpr0 (abfd, p, 30);
5981 p = restgpr0 (abfd, p, 31);
5983 bfd_put_32 (abfd, BLR, p);
5988 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5990 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5995 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5997 p = savegpr1 (abfd, p, r);
5998 bfd_put_32 (abfd, BLR, p);
6003 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6005 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6010 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6012 p = restgpr1 (abfd, p, r);
6013 bfd_put_32 (abfd, BLR, p);
6018 savefpr (bfd *abfd, bfd_byte *p, int r)
6020 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6025 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6027 p = savefpr (abfd, p, r);
6028 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6030 bfd_put_32 (abfd, BLR, p);
6035 restfpr (bfd *abfd, bfd_byte *p, int r)
6037 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6042 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6044 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6046 p = restfpr (abfd, p, r);
6047 bfd_put_32 (abfd, MTLR_R0, p);
6051 p = restfpr (abfd, p, 30);
6052 p = restfpr (abfd, p, 31);
6054 bfd_put_32 (abfd, BLR, p);
6059 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6061 p = savefpr (abfd, p, r);
6062 bfd_put_32 (abfd, BLR, p);
6067 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6069 p = restfpr (abfd, p, r);
6070 bfd_put_32 (abfd, BLR, p);
6075 savevr (bfd *abfd, bfd_byte *p, int r)
6077 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6079 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6084 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6086 p = savevr (abfd, p, r);
6087 bfd_put_32 (abfd, BLR, p);
6092 restvr (bfd *abfd, bfd_byte *p, int r)
6094 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6096 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6101 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6103 p = restvr (abfd, p, r);
6104 bfd_put_32 (abfd, BLR, p);
6108 /* Called via elf_link_hash_traverse to transfer dynamic linking
6109 information on function code symbol entries to their corresponding
6110 function descriptor symbol entries. */
6113 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6115 struct bfd_link_info *info;
6116 struct ppc_link_hash_table *htab;
6117 struct plt_entry *ent;
6118 struct ppc_link_hash_entry *fh;
6119 struct ppc_link_hash_entry *fdh;
6120 bfd_boolean force_local;
6122 fh = (struct ppc_link_hash_entry *) h;
6123 if (fh->elf.root.type == bfd_link_hash_indirect)
6126 if (fh->elf.root.type == bfd_link_hash_warning)
6127 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
6130 htab = ppc_hash_table (info);
6132 /* Resolve undefined references to dot-symbols as the value
6133 in the function descriptor, if we have one in a regular object.
6134 This is to satisfy cases like ".quad .foo". Calls to functions
6135 in dynamic objects are handled elsewhere. */
6136 if (fh->elf.root.type == bfd_link_hash_undefweak
6137 && fh->was_undefined
6138 && (fdh = defined_func_desc (fh)) != NULL
6139 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6140 && opd_entry_value (fdh->elf.root.u.def.section,
6141 fdh->elf.root.u.def.value,
6142 &fh->elf.root.u.def.section,
6143 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6145 fh->elf.root.type = fdh->elf.root.type;
6146 fh->elf.forced_local = 1;
6147 fh->elf.def_regular = fdh->elf.def_regular;
6148 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6151 /* If this is a function code symbol, transfer dynamic linking
6152 information to the function descriptor symbol. */
6156 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6157 if (ent->plt.refcount > 0)
6160 || fh->elf.root.root.string[0] != '.'
6161 || fh->elf.root.root.string[1] == '\0')
6164 /* Find the corresponding function descriptor symbol. Create it
6165 as undefined if necessary. */
6167 fdh = lookup_fdh (fh, htab);
6169 && !info->executable
6170 && (fh->elf.root.type == bfd_link_hash_undefined
6171 || fh->elf.root.type == bfd_link_hash_undefweak))
6173 fdh = make_fdh (info, fh);
6178 /* Fake function descriptors are made undefweak. If the function
6179 code symbol is strong undefined, make the fake sym the same.
6180 If the function code symbol is defined, then force the fake
6181 descriptor local; We can't support overriding of symbols in a
6182 shared library on a fake descriptor. */
6186 && fdh->elf.root.type == bfd_link_hash_undefweak)
6188 if (fh->elf.root.type == bfd_link_hash_undefined)
6190 fdh->elf.root.type = bfd_link_hash_undefined;
6191 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6193 else if (fh->elf.root.type == bfd_link_hash_defined
6194 || fh->elf.root.type == bfd_link_hash_defweak)
6196 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6201 && !fdh->elf.forced_local
6202 && (!info->executable
6203 || fdh->elf.def_dynamic
6204 || fdh->elf.ref_dynamic
6205 || (fdh->elf.root.type == bfd_link_hash_undefweak
6206 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6208 if (fdh->elf.dynindx == -1)
6209 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6211 fdh->elf.ref_regular |= fh->elf.ref_regular;
6212 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6213 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6214 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6215 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6217 move_plt_plist (fh, fdh);
6218 fdh->elf.needs_plt = 1;
6220 fdh->is_func_descriptor = 1;
6225 /* Now that the info is on the function descriptor, clear the
6226 function code sym info. Any function code syms for which we
6227 don't have a definition in a regular file, we force local.
6228 This prevents a shared library from exporting syms that have
6229 been imported from another library. Function code syms that
6230 are really in the library we must leave global to prevent the
6231 linker dragging in a definition from a static library. */
6232 force_local = (!fh->elf.def_regular
6234 || !fdh->elf.def_regular
6235 || fdh->elf.forced_local);
6236 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6241 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6242 this hook to a) provide some gcc support functions, and b) transfer
6243 dynamic linking information gathered so far on function code symbol
6244 entries, to their corresponding function descriptor symbol entries. */
6247 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6248 struct bfd_link_info *info)
6250 struct ppc_link_hash_table *htab;
6252 const struct sfpr_def_parms funcs[] =
6254 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6255 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6256 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6257 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6258 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6259 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6260 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6261 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6262 { "._savef", 14, 31, savefpr, savefpr1_tail },
6263 { "._restf", 14, 31, restfpr, restfpr1_tail },
6264 { "_savevr_", 20, 31, savevr, savevr_tail },
6265 { "_restvr_", 20, 31, restvr, restvr_tail }
6268 htab = ppc_hash_table (info);
6269 if (htab->sfpr == NULL)
6270 /* We don't have any relocs. */
6273 /* Provide any missing _save* and _rest* functions. */
6274 htab->sfpr->size = 0;
6275 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6276 if (!sfpr_define (info, &funcs[i]))
6279 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6281 if (htab->sfpr->size == 0)
6282 htab->sfpr->flags |= SEC_EXCLUDE;
6287 /* Adjust a symbol defined by a dynamic object and referenced by a
6288 regular object. The current definition is in some section of the
6289 dynamic object, but we're not including those sections. We have to
6290 change the definition to something the rest of the link can
6294 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6295 struct elf_link_hash_entry *h)
6297 struct ppc_link_hash_table *htab;
6300 htab = ppc_hash_table (info);
6302 /* Deal with function syms. */
6303 if (h->type == STT_FUNC
6304 || h->type == STT_GNU_IFUNC
6307 /* Clear procedure linkage table information for any symbol that
6308 won't need a .plt entry. */
6309 struct plt_entry *ent;
6310 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6311 if (ent->plt.refcount > 0)
6314 || (h->type != STT_GNU_IFUNC
6315 && (SYMBOL_CALLS_LOCAL (info, h)
6316 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6317 && h->root.type == bfd_link_hash_undefweak))))
6319 h->plt.plist = NULL;
6324 h->plt.plist = NULL;
6326 /* If this is a weak symbol, and there is a real definition, the
6327 processor independent code will have arranged for us to see the
6328 real definition first, and we can just use the same value. */
6329 if (h->u.weakdef != NULL)
6331 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6332 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6333 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6334 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6335 if (ELIMINATE_COPY_RELOCS)
6336 h->non_got_ref = h->u.weakdef->non_got_ref;
6340 /* If we are creating a shared library, we must presume that the
6341 only references to the symbol are via the global offset table.
6342 For such cases we need not do anything here; the relocations will
6343 be handled correctly by relocate_section. */
6347 /* If there are no references to this symbol that do not use the
6348 GOT, we don't need to generate a copy reloc. */
6349 if (!h->non_got_ref)
6352 /* Don't generate a copy reloc for symbols defined in the executable. */
6353 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6356 if (ELIMINATE_COPY_RELOCS)
6358 struct ppc_link_hash_entry * eh;
6359 struct ppc_dyn_relocs *p;
6361 eh = (struct ppc_link_hash_entry *) h;
6362 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6364 s = p->sec->output_section;
6365 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6369 /* If we didn't find any dynamic relocs in read-only sections, then
6370 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6378 if (h->plt.plist != NULL)
6380 /* We should never get here, but unfortunately there are versions
6381 of gcc out there that improperly (for this ABI) put initialized
6382 function pointers, vtable refs and suchlike in read-only
6383 sections. Allow them to proceed, but warn that this might
6384 break at runtime. */
6385 (*_bfd_error_handler)
6386 (_("copy reloc against `%s' requires lazy plt linking; "
6387 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6388 h->root.root.string);
6391 /* This is a reference to a symbol defined by a dynamic object which
6392 is not a function. */
6396 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6397 h->root.root.string);
6401 /* We must allocate the symbol in our .dynbss section, which will
6402 become part of the .bss section of the executable. There will be
6403 an entry for this symbol in the .dynsym section. The dynamic
6404 object will contain position independent code, so all references
6405 from the dynamic object to this symbol will go through the global
6406 offset table. The dynamic linker will use the .dynsym entry to
6407 determine the address it must put in the global offset table, so
6408 both the dynamic object and the regular object will refer to the
6409 same memory location for the variable. */
6411 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6412 to copy the initial value out of the dynamic object and into the
6413 runtime process image. We need to remember the offset into the
6414 .rela.bss section we are going to use. */
6415 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6417 htab->relbss->size += sizeof (Elf64_External_Rela);
6423 return _bfd_elf_adjust_dynamic_copy (h, s);
6426 /* If given a function descriptor symbol, hide both the function code
6427 sym and the descriptor. */
6429 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6430 struct elf_link_hash_entry *h,
6431 bfd_boolean force_local)
6433 struct ppc_link_hash_entry *eh;
6434 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6436 eh = (struct ppc_link_hash_entry *) h;
6437 if (eh->is_func_descriptor)
6439 struct ppc_link_hash_entry *fh = eh->oh;
6444 struct ppc_link_hash_table *htab;
6447 /* We aren't supposed to use alloca in BFD because on
6448 systems which do not have alloca the version in libiberty
6449 calls xmalloc, which might cause the program to crash
6450 when it runs out of memory. This function doesn't have a
6451 return status, so there's no way to gracefully return an
6452 error. So cheat. We know that string[-1] can be safely
6453 accessed; It's either a string in an ELF string table,
6454 or allocated in an objalloc structure. */
6456 p = eh->elf.root.root.string - 1;
6459 htab = ppc_hash_table (info);
6460 fh = (struct ppc_link_hash_entry *)
6461 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6464 /* Unfortunately, if it so happens that the string we were
6465 looking for was allocated immediately before this string,
6466 then we overwrote the string terminator. That's the only
6467 reason the lookup should fail. */
6470 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6471 while (q >= eh->elf.root.root.string && *q == *p)
6473 if (q < eh->elf.root.root.string && *p == '.')
6474 fh = (struct ppc_link_hash_entry *)
6475 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6484 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6489 get_sym_h (struct elf_link_hash_entry **hp,
6490 Elf_Internal_Sym **symp,
6493 Elf_Internal_Sym **locsymsp,
6494 unsigned long r_symndx,
6497 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6499 if (r_symndx >= symtab_hdr->sh_info)
6501 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6502 struct elf_link_hash_entry *h;
6504 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6505 h = elf_follow_link (h);
6513 if (symsecp != NULL)
6515 asection *symsec = NULL;
6516 if (h->root.type == bfd_link_hash_defined
6517 || h->root.type == bfd_link_hash_defweak)
6518 symsec = h->root.u.def.section;
6522 if (tls_maskp != NULL)
6524 struct ppc_link_hash_entry *eh;
6526 eh = (struct ppc_link_hash_entry *) h;
6527 *tls_maskp = &eh->tls_mask;
6532 Elf_Internal_Sym *sym;
6533 Elf_Internal_Sym *locsyms = *locsymsp;
6535 if (locsyms == NULL)
6537 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6538 if (locsyms == NULL)
6539 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6540 symtab_hdr->sh_info,
6541 0, NULL, NULL, NULL);
6542 if (locsyms == NULL)
6544 *locsymsp = locsyms;
6546 sym = locsyms + r_symndx;
6554 if (symsecp != NULL)
6555 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6557 if (tls_maskp != NULL)
6559 struct got_entry **lgot_ents;
6563 lgot_ents = elf_local_got_ents (ibfd);
6564 if (lgot_ents != NULL)
6566 struct plt_entry **local_plt = (struct plt_entry **)
6567 (lgot_ents + symtab_hdr->sh_info);
6568 char *lgot_masks = (char *)
6569 (local_plt + symtab_hdr->sh_info);
6570 tls_mask = &lgot_masks[r_symndx];
6572 *tls_maskp = tls_mask;
6578 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6579 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6580 type suitable for optimization, and 1 otherwise. */
6583 get_tls_mask (char **tls_maskp,
6584 unsigned long *toc_symndx,
6585 bfd_vma *toc_addend,
6586 Elf_Internal_Sym **locsymsp,
6587 const Elf_Internal_Rela *rel,
6590 unsigned long r_symndx;
6592 struct elf_link_hash_entry *h;
6593 Elf_Internal_Sym *sym;
6597 r_symndx = ELF64_R_SYM (rel->r_info);
6598 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6601 if ((*tls_maskp != NULL && **tls_maskp != 0)
6603 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6606 /* Look inside a TOC section too. */
6609 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6610 off = h->root.u.def.value;
6613 off = sym->st_value;
6614 off += rel->r_addend;
6615 BFD_ASSERT (off % 8 == 0);
6616 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6617 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6618 if (toc_symndx != NULL)
6619 *toc_symndx = r_symndx;
6620 if (toc_addend != NULL)
6621 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6622 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6625 || ((h->root.type == bfd_link_hash_defined
6626 || h->root.type == bfd_link_hash_defweak)
6627 && !h->def_dynamic))
6628 && (next_r == -1 || next_r == -2))
6633 /* Adjust all global syms defined in opd sections. In gcc generated
6634 code for the old ABI, these will already have been done. */
6637 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6639 struct ppc_link_hash_entry *eh;
6641 struct _opd_sec_data *opd;
6643 if (h->root.type == bfd_link_hash_indirect)
6646 if (h->root.type == bfd_link_hash_warning)
6647 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6649 if (h->root.type != bfd_link_hash_defined
6650 && h->root.type != bfd_link_hash_defweak)
6653 eh = (struct ppc_link_hash_entry *) h;
6654 if (eh->adjust_done)
6657 sym_sec = eh->elf.root.u.def.section;
6658 opd = get_opd_info (sym_sec);
6659 if (opd != NULL && opd->adjust != NULL)
6661 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6664 /* This entry has been deleted. */
6665 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6668 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6669 if (elf_discarded_section (dsec))
6671 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6675 eh->elf.root.u.def.value = 0;
6676 eh->elf.root.u.def.section = dsec;
6679 eh->elf.root.u.def.value += adjust;
6680 eh->adjust_done = 1;
6685 /* Handles decrementing dynamic reloc counts for the reloc specified by
6686 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6687 have already been determined. */
6690 dec_dynrel_count (bfd_vma r_info,
6692 struct bfd_link_info *info,
6693 Elf_Internal_Sym **local_syms,
6694 struct elf_link_hash_entry *h,
6697 enum elf_ppc64_reloc_type r_type;
6698 struct ppc_dyn_relocs *p;
6699 struct ppc_dyn_relocs **pp;
6701 /* Can this reloc be dynamic? This switch, and later tests here
6702 should be kept in sync with the code in check_relocs. */
6703 r_type = ELF64_R_TYPE (r_info);
6709 case R_PPC64_TPREL16:
6710 case R_PPC64_TPREL16_LO:
6711 case R_PPC64_TPREL16_HI:
6712 case R_PPC64_TPREL16_HA:
6713 case R_PPC64_TPREL16_DS:
6714 case R_PPC64_TPREL16_LO_DS:
6715 case R_PPC64_TPREL16_HIGHER:
6716 case R_PPC64_TPREL16_HIGHERA:
6717 case R_PPC64_TPREL16_HIGHEST:
6718 case R_PPC64_TPREL16_HIGHESTA:
6722 case R_PPC64_TPREL64:
6723 case R_PPC64_DTPMOD64:
6724 case R_PPC64_DTPREL64:
6725 case R_PPC64_ADDR64:
6729 case R_PPC64_ADDR14:
6730 case R_PPC64_ADDR14_BRNTAKEN:
6731 case R_PPC64_ADDR14_BRTAKEN:
6732 case R_PPC64_ADDR16:
6733 case R_PPC64_ADDR16_DS:
6734 case R_PPC64_ADDR16_HA:
6735 case R_PPC64_ADDR16_HI:
6736 case R_PPC64_ADDR16_HIGHER:
6737 case R_PPC64_ADDR16_HIGHERA:
6738 case R_PPC64_ADDR16_HIGHEST:
6739 case R_PPC64_ADDR16_HIGHESTA:
6740 case R_PPC64_ADDR16_LO:
6741 case R_PPC64_ADDR16_LO_DS:
6742 case R_PPC64_ADDR24:
6743 case R_PPC64_ADDR32:
6744 case R_PPC64_UADDR16:
6745 case R_PPC64_UADDR32:
6746 case R_PPC64_UADDR64:
6751 if (local_syms != NULL)
6753 unsigned long r_symndx;
6754 Elf_Internal_Sym *sym;
6755 bfd *ibfd = sec->owner;
6757 r_symndx = ELF64_R_SYM (r_info);
6758 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6763 && (must_be_dyn_reloc (info, r_type)
6766 || h->root.type == bfd_link_hash_defweak
6767 || !h->def_regular))))
6768 || (ELIMINATE_COPY_RELOCS
6771 && (h->root.type == bfd_link_hash_defweak
6772 || !h->def_regular)))
6778 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6781 if (sym_sec != NULL)
6783 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6784 pp = (struct ppc_dyn_relocs **) vpp;
6788 void *vpp = &elf_section_data (sec)->local_dynrel;
6789 pp = (struct ppc_dyn_relocs **) vpp;
6792 /* elf_gc_sweep may have already removed all dyn relocs associated
6793 with local syms for a given section. Don't report a dynreloc
6799 while ((p = *pp) != NULL)
6803 if (!must_be_dyn_reloc (info, r_type))
6813 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6815 bfd_set_error (bfd_error_bad_value);
6819 /* Remove unused Official Procedure Descriptor entries. Currently we
6820 only remove those associated with functions in discarded link-once
6821 sections, or weakly defined functions that have been overridden. It
6822 would be possible to remove many more entries for statically linked
6826 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6827 bfd_boolean non_overlapping)
6830 bfd_boolean some_edited = FALSE;
6831 asection *need_pad = NULL;
6833 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6836 Elf_Internal_Rela *relstart, *rel, *relend;
6837 Elf_Internal_Shdr *symtab_hdr;
6838 Elf_Internal_Sym *local_syms;
6839 struct elf_link_hash_entry **sym_hashes;
6841 struct _opd_sec_data *opd;
6842 bfd_boolean need_edit, add_aux_fields;
6843 bfd_size_type cnt_16b = 0;
6845 sec = bfd_get_section_by_name (ibfd, ".opd");
6846 if (sec == NULL || sec->size == 0)
6849 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6852 if (sec->output_section == bfd_abs_section_ptr)
6855 /* Look through the section relocs. */
6856 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6860 symtab_hdr = &elf_symtab_hdr (ibfd);
6861 sym_hashes = elf_sym_hashes (ibfd);
6863 /* Read the relocations. */
6864 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6866 if (relstart == NULL)
6869 /* First run through the relocs to check they are sane, and to
6870 determine whether we need to edit this opd section. */
6874 relend = relstart + sec->reloc_count;
6875 for (rel = relstart; rel < relend; )
6877 enum elf_ppc64_reloc_type r_type;
6878 unsigned long r_symndx;
6880 struct elf_link_hash_entry *h;
6881 Elf_Internal_Sym *sym;
6883 /* .opd contains a regular array of 16 or 24 byte entries. We're
6884 only interested in the reloc pointing to a function entry
6886 if (rel->r_offset != offset
6887 || rel + 1 >= relend
6888 || (rel + 1)->r_offset != offset + 8)
6890 /* If someone messes with .opd alignment then after a
6891 "ld -r" we might have padding in the middle of .opd.
6892 Also, there's nothing to prevent someone putting
6893 something silly in .opd with the assembler. No .opd
6894 optimization for them! */
6896 (*_bfd_error_handler)
6897 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6902 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6903 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6905 (*_bfd_error_handler)
6906 (_("%B: unexpected reloc type %u in .opd section"),
6912 r_symndx = ELF64_R_SYM (rel->r_info);
6913 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6917 if (sym_sec == NULL || sym_sec->owner == NULL)
6919 const char *sym_name;
6921 sym_name = h->root.root.string;
6923 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6926 (*_bfd_error_handler)
6927 (_("%B: undefined sym `%s' in .opd section"),
6933 /* opd entries are always for functions defined in the
6934 current input bfd. If the symbol isn't defined in the
6935 input bfd, then we won't be using the function in this
6936 bfd; It must be defined in a linkonce section in another
6937 bfd, or is weak. It's also possible that we are
6938 discarding the function due to a linker script /DISCARD/,
6939 which we test for via the output_section. */
6940 if (sym_sec->owner != ibfd
6941 || sym_sec->output_section == bfd_abs_section_ptr)
6946 || (rel + 1 == relend && rel->r_offset == offset + 16))
6948 if (sec->size == offset + 24)
6953 if (rel == relend && sec->size == offset + 16)
6961 if (rel->r_offset == offset + 24)
6963 else if (rel->r_offset != offset + 16)
6965 else if (rel + 1 < relend
6966 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6967 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6972 else if (rel + 2 < relend
6973 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6974 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6983 add_aux_fields = non_overlapping && cnt_16b > 0;
6985 if (need_edit || add_aux_fields)
6987 Elf_Internal_Rela *write_rel;
6988 bfd_byte *rptr, *wptr;
6989 bfd_byte *new_contents;
6994 new_contents = NULL;
6995 amt = sec->size * sizeof (long) / 8;
6996 opd = &ppc64_elf_section_data (sec)->u.opd;
6997 opd->adjust = bfd_zalloc (obfd, amt);
6998 if (opd->adjust == NULL)
7000 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7002 /* This seems a waste of time as input .opd sections are all
7003 zeros as generated by gcc, but I suppose there's no reason
7004 this will always be so. We might start putting something in
7005 the third word of .opd entries. */
7006 if ((sec->flags & SEC_IN_MEMORY) == 0)
7009 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7014 if (local_syms != NULL
7015 && symtab_hdr->contents != (unsigned char *) local_syms)
7017 if (elf_section_data (sec)->relocs != relstart)
7021 sec->contents = loc;
7022 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7025 elf_section_data (sec)->relocs = relstart;
7027 new_contents = sec->contents;
7030 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7031 if (new_contents == NULL)
7035 wptr = new_contents;
7036 rptr = sec->contents;
7038 write_rel = relstart;
7042 for (rel = relstart; rel < relend; rel++)
7044 unsigned long r_symndx;
7046 struct elf_link_hash_entry *h;
7047 Elf_Internal_Sym *sym;
7049 r_symndx = ELF64_R_SYM (rel->r_info);
7050 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7054 if (rel->r_offset == offset)
7056 struct ppc_link_hash_entry *fdh = NULL;
7058 /* See if the .opd entry is full 24 byte or
7059 16 byte (with fd_aux entry overlapped with next
7062 if ((rel + 2 == relend && sec->size == offset + 16)
7063 || (rel + 3 < relend
7064 && rel[2].r_offset == offset + 16
7065 && rel[3].r_offset == offset + 24
7066 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7067 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7071 && h->root.root.string[0] == '.')
7073 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7074 ppc_hash_table (info));
7076 && fdh->elf.root.type != bfd_link_hash_defined
7077 && fdh->elf.root.type != bfd_link_hash_defweak)
7081 skip = (sym_sec->owner != ibfd
7082 || sym_sec->output_section == bfd_abs_section_ptr);
7085 if (fdh != NULL && sym_sec->owner == ibfd)
7087 /* Arrange for the function descriptor sym
7089 fdh->elf.root.u.def.value = 0;
7090 fdh->elf.root.u.def.section = sym_sec;
7092 opd->adjust[rel->r_offset / 8] = -1;
7096 /* We'll be keeping this opd entry. */
7100 /* Redefine the function descriptor symbol to
7101 this location in the opd section. It is
7102 necessary to update the value here rather
7103 than using an array of adjustments as we do
7104 for local symbols, because various places
7105 in the generic ELF code use the value
7106 stored in u.def.value. */
7107 fdh->elf.root.u.def.value = wptr - new_contents;
7108 fdh->adjust_done = 1;
7111 /* Local syms are a bit tricky. We could
7112 tweak them as they can be cached, but
7113 we'd need to look through the local syms
7114 for the function descriptor sym which we
7115 don't have at the moment. So keep an
7116 array of adjustments. */
7117 opd->adjust[rel->r_offset / 8]
7118 = (wptr - new_contents) - (rptr - sec->contents);
7121 memcpy (wptr, rptr, opd_ent_size);
7122 wptr += opd_ent_size;
7123 if (add_aux_fields && opd_ent_size == 16)
7125 memset (wptr, '\0', 8);
7129 rptr += opd_ent_size;
7130 offset += opd_ent_size;
7136 && !info->relocatable
7137 && !dec_dynrel_count (rel->r_info, sec, info,
7143 /* We need to adjust any reloc offsets to point to the
7144 new opd entries. While we're at it, we may as well
7145 remove redundant relocs. */
7146 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7147 if (write_rel != rel)
7148 memcpy (write_rel, rel, sizeof (*rel));
7153 sec->size = wptr - new_contents;
7154 sec->reloc_count = write_rel - relstart;
7157 free (sec->contents);
7158 sec->contents = new_contents;
7161 /* Fudge the header size too, as this is used later in
7162 elf_bfd_final_link if we are emitting relocs. */
7163 elf_section_data (sec)->rel_hdr.sh_size
7164 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
7165 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
7168 else if (elf_section_data (sec)->relocs != relstart)
7171 if (local_syms != NULL
7172 && symtab_hdr->contents != (unsigned char *) local_syms)
7174 if (!info->keep_memory)
7177 symtab_hdr->contents = (unsigned char *) local_syms;
7182 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7184 /* If we are doing a final link and the last .opd entry is just 16 byte
7185 long, add a 8 byte padding after it. */
7186 if (need_pad != NULL && !info->relocatable)
7190 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7192 BFD_ASSERT (need_pad->size > 0);
7194 p = bfd_malloc (need_pad->size + 8);
7198 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7199 p, 0, need_pad->size))
7202 need_pad->contents = p;
7203 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7207 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7211 need_pad->contents = p;
7214 memset (need_pad->contents + need_pad->size, 0, 8);
7215 need_pad->size += 8;
7221 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7224 ppc64_elf_tls_setup (bfd *obfd,
7225 struct bfd_link_info *info,
7226 int no_tls_get_addr_opt)
7228 struct ppc_link_hash_table *htab;
7230 htab = ppc_hash_table (info);
7231 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7232 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7233 FALSE, FALSE, TRUE));
7234 /* Move dynamic linking info to the function descriptor sym. */
7235 if (htab->tls_get_addr != NULL)
7236 func_desc_adjust (&htab->tls_get_addr->elf, info);
7237 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7238 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7239 FALSE, FALSE, TRUE));
7240 if (!no_tls_get_addr_opt)
7242 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7244 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7245 FALSE, FALSE, TRUE);
7247 func_desc_adjust (opt, info);
7248 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7249 FALSE, FALSE, TRUE);
7251 && (opt_fd->root.type == bfd_link_hash_defined
7252 || opt_fd->root.type == bfd_link_hash_defweak))
7254 /* If glibc supports an optimized __tls_get_addr call stub,
7255 signalled by the presence of __tls_get_addr_opt, and we'll
7256 be calling __tls_get_addr via a plt call stub, then
7257 make __tls_get_addr point to __tls_get_addr_opt. */
7258 tga_fd = &htab->tls_get_addr_fd->elf;
7259 if (htab->elf.dynamic_sections_created
7261 && (tga_fd->type == STT_FUNC
7262 || tga_fd->needs_plt)
7263 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7264 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7265 && tga_fd->root.type == bfd_link_hash_undefweak)))
7267 struct plt_entry *ent;
7269 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7270 if (ent->plt.refcount > 0)
7274 tga_fd->root.type = bfd_link_hash_indirect;
7275 tga_fd->root.u.i.link = &opt_fd->root;
7276 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7277 if (opt_fd->dynindx != -1)
7279 /* Use __tls_get_addr_opt in dynamic relocations. */
7280 opt_fd->dynindx = -1;
7281 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7282 opt_fd->dynstr_index);
7283 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7286 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7287 tga = &htab->tls_get_addr->elf;
7288 if (opt != NULL && tga != NULL)
7290 tga->root.type = bfd_link_hash_indirect;
7291 tga->root.u.i.link = &opt->root;
7292 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7293 _bfd_elf_link_hash_hide_symbol (info, opt,
7295 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7297 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7298 htab->tls_get_addr_fd->is_func_descriptor = 1;
7299 if (htab->tls_get_addr != NULL)
7301 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7302 htab->tls_get_addr->is_func = 1;
7308 no_tls_get_addr_opt = TRUE;
7310 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7311 return _bfd_elf_tls_setup (obfd, info);
7314 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7318 branch_reloc_hash_match (const bfd *ibfd,
7319 const Elf_Internal_Rela *rel,
7320 const struct ppc_link_hash_entry *hash1,
7321 const struct ppc_link_hash_entry *hash2)
7323 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7324 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7325 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7327 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7329 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7330 struct elf_link_hash_entry *h;
7332 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7333 h = elf_follow_link (h);
7334 if (h == &hash1->elf || h == &hash2->elf)
7340 /* Run through all the TLS relocs looking for optimization
7341 opportunities. The linker has been hacked (see ppc64elf.em) to do
7342 a preliminary section layout so that we know the TLS segment
7343 offsets. We can't optimize earlier because some optimizations need
7344 to know the tp offset, and we need to optimize before allocating
7345 dynamic relocations. */
7348 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7352 struct ppc_link_hash_table *htab;
7355 if (info->relocatable || !info->executable)
7358 htab = ppc_hash_table (info);
7359 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7361 Elf_Internal_Sym *locsyms = NULL;
7362 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7363 unsigned char *toc_ref = NULL;
7365 /* Look at all the sections for this file. Make two passes over
7366 the relocs. On the first pass, mark toc entries involved
7367 with tls relocs, and check that tls relocs involved in
7368 setting up a tls_get_addr call are indeed followed by such a
7369 call. If they are not, exclude them from the optimizations
7370 done on the second pass. */
7371 for (pass = 0; pass < 2; ++pass)
7372 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7373 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7375 Elf_Internal_Rela *relstart, *rel, *relend;
7377 /* Read the relocations. */
7378 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7380 if (relstart == NULL)
7383 relend = relstart + sec->reloc_count;
7384 for (rel = relstart; rel < relend; rel++)
7386 enum elf_ppc64_reloc_type r_type;
7387 unsigned long r_symndx;
7388 struct elf_link_hash_entry *h;
7389 Elf_Internal_Sym *sym;
7392 char tls_set, tls_clear, tls_type = 0;
7394 bfd_boolean ok_tprel, is_local;
7395 long toc_ref_index = 0;
7396 int expecting_tls_get_addr = 0;
7398 r_symndx = ELF64_R_SYM (rel->r_info);
7399 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7403 if (elf_section_data (sec)->relocs != relstart)
7405 if (toc_ref != NULL)
7408 && (elf_symtab_hdr (ibfd).contents
7409 != (unsigned char *) locsyms))
7416 if (h->root.type != bfd_link_hash_defined
7417 && h->root.type != bfd_link_hash_defweak)
7419 value = h->root.u.def.value;
7422 /* Symbols referenced by TLS relocs must be of type
7423 STT_TLS. So no need for .opd local sym adjust. */
7424 value = sym->st_value;
7432 value += sym_sec->output_offset;
7433 value += sym_sec->output_section->vma;
7434 value -= htab->elf.tls_sec->vma;
7435 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7436 < (bfd_vma) 1 << 32);
7439 r_type = ELF64_R_TYPE (rel->r_info);
7442 case R_PPC64_GOT_TLSLD16:
7443 case R_PPC64_GOT_TLSLD16_LO:
7444 expecting_tls_get_addr = 1;
7447 case R_PPC64_GOT_TLSLD16_HI:
7448 case R_PPC64_GOT_TLSLD16_HA:
7449 /* These relocs should never be against a symbol
7450 defined in a shared lib. Leave them alone if
7451 that turns out to be the case. */
7458 tls_type = TLS_TLS | TLS_LD;
7461 case R_PPC64_GOT_TLSGD16:
7462 case R_PPC64_GOT_TLSGD16_LO:
7463 expecting_tls_get_addr = 1;
7466 case R_PPC64_GOT_TLSGD16_HI:
7467 case R_PPC64_GOT_TLSGD16_HA:
7473 tls_set = TLS_TLS | TLS_TPRELGD;
7475 tls_type = TLS_TLS | TLS_GD;
7478 case R_PPC64_GOT_TPREL16_DS:
7479 case R_PPC64_GOT_TPREL16_LO_DS:
7480 case R_PPC64_GOT_TPREL16_HI:
7481 case R_PPC64_GOT_TPREL16_HA:
7486 tls_clear = TLS_TPREL;
7487 tls_type = TLS_TLS | TLS_TPREL;
7493 case R_PPC64_TOC16_LO:
7497 if (sym_sec == NULL || sym_sec != toc)
7500 /* Mark this toc entry as referenced by a TLS
7501 code sequence. We can do that now in the
7502 case of R_PPC64_TLS, and after checking for
7503 tls_get_addr for the TOC16 relocs. */
7504 if (toc_ref == NULL)
7506 toc_ref = bfd_zmalloc (toc->size / 8);
7507 if (toc_ref == NULL)
7511 value = h->root.u.def.value;
7513 value = sym->st_value;
7514 value += rel->r_addend;
7515 BFD_ASSERT (value < toc->size && value % 8 == 0);
7516 toc_ref_index = value / 8;
7517 if (r_type == R_PPC64_TLS
7518 || r_type == R_PPC64_TLSGD
7519 || r_type == R_PPC64_TLSLD)
7521 toc_ref[toc_ref_index] = 1;
7525 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7530 expecting_tls_get_addr = 2;
7533 case R_PPC64_TPREL64:
7537 || !toc_ref[rel->r_offset / 8])
7542 tls_set = TLS_EXPLICIT;
7543 tls_clear = TLS_TPREL;
7548 case R_PPC64_DTPMOD64:
7552 || !toc_ref[rel->r_offset / 8])
7554 if (rel + 1 < relend
7556 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7557 && rel[1].r_offset == rel->r_offset + 8)
7561 tls_set = TLS_EXPLICIT | TLS_GD;
7564 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7573 tls_set = TLS_EXPLICIT;
7584 if (!expecting_tls_get_addr
7585 || !sec->has_tls_get_addr_call)
7588 if (rel + 1 < relend
7589 && branch_reloc_hash_match (ibfd, rel + 1,
7591 htab->tls_get_addr_fd))
7593 if (expecting_tls_get_addr == 2)
7595 /* Check for toc tls entries. */
7599 retval = get_tls_mask (&toc_tls, NULL, NULL,
7604 if (retval > 1 && toc_tls != NULL)
7605 toc_ref[toc_ref_index] = 1;
7610 if (expecting_tls_get_addr != 1)
7613 /* Uh oh, we didn't find the expected call. We
7614 could just mark this symbol to exclude it
7615 from tls optimization but it's safer to skip
7616 the entire section. */
7617 sec->has_tls_reloc = 0;
7621 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7623 struct plt_entry *ent;
7624 for (ent = htab->tls_get_addr->elf.plt.plist;
7627 if (ent->addend == 0)
7629 if (ent->plt.refcount > 0)
7631 ent->plt.refcount -= 1;
7632 expecting_tls_get_addr = 0;
7638 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7640 struct plt_entry *ent;
7641 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7644 if (ent->addend == 0)
7646 if (ent->plt.refcount > 0)
7647 ent->plt.refcount -= 1;
7655 if ((tls_set & TLS_EXPLICIT) == 0)
7657 struct got_entry *ent;
7659 /* Adjust got entry for this reloc. */
7663 ent = elf_local_got_ents (ibfd)[r_symndx];
7665 for (; ent != NULL; ent = ent->next)
7666 if (ent->addend == rel->r_addend
7667 && ent->owner == ibfd
7668 && ent->tls_type == tls_type)
7675 /* We managed to get rid of a got entry. */
7676 if (ent->got.refcount > 0)
7677 ent->got.refcount -= 1;
7682 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7683 we'll lose one or two dyn relocs. */
7684 if (!dec_dynrel_count (rel->r_info, sec, info,
7688 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7690 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7696 *tls_mask |= tls_set;
7697 *tls_mask &= ~tls_clear;
7700 if (elf_section_data (sec)->relocs != relstart)
7704 if (toc_ref != NULL)
7708 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7710 if (!info->keep_memory)
7713 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7719 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7720 the values of any global symbols in a toc section that has been
7721 edited. Globals in toc sections should be a rarity, so this function
7722 sets a flag if any are found in toc sections other than the one just
7723 edited, so that futher hash table traversals can be avoided. */
7725 struct adjust_toc_info
7728 unsigned long *skip;
7729 bfd_boolean global_toc_syms;
7733 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7735 struct ppc_link_hash_entry *eh;
7736 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7738 if (h->root.type == bfd_link_hash_indirect)
7741 if (h->root.type == bfd_link_hash_warning)
7742 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7744 if (h->root.type != bfd_link_hash_defined
7745 && h->root.type != bfd_link_hash_defweak)
7748 eh = (struct ppc_link_hash_entry *) h;
7749 if (eh->adjust_done)
7752 if (eh->elf.root.u.def.section == toc_inf->toc)
7754 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7755 if (skip != (unsigned long) -1)
7756 eh->elf.root.u.def.value -= skip;
7759 (*_bfd_error_handler)
7760 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7761 eh->elf.root.u.def.section = &bfd_abs_section;
7762 eh->elf.root.u.def.value = 0;
7764 eh->adjust_done = 1;
7766 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7767 toc_inf->global_toc_syms = TRUE;
7772 /* Examine all relocs referencing .toc sections in order to remove
7773 unused .toc entries. */
7776 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7779 struct adjust_toc_info toc_inf;
7781 toc_inf.global_toc_syms = TRUE;
7782 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7784 asection *toc, *sec;
7785 Elf_Internal_Shdr *symtab_hdr;
7786 Elf_Internal_Sym *local_syms;
7787 struct elf_link_hash_entry **sym_hashes;
7788 Elf_Internal_Rela *relstart, *rel;
7789 unsigned long *skip, *drop;
7790 unsigned char *used;
7791 unsigned char *keep, last, some_unused;
7793 toc = bfd_get_section_by_name (ibfd, ".toc");
7796 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7797 || elf_discarded_section (toc))
7801 symtab_hdr = &elf_symtab_hdr (ibfd);
7802 sym_hashes = elf_sym_hashes (ibfd);
7804 /* Look at sections dropped from the final link. */
7807 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7809 if (sec->reloc_count == 0
7810 || !elf_discarded_section (sec)
7811 || get_opd_info (sec)
7812 || (sec->flags & SEC_ALLOC) == 0
7813 || (sec->flags & SEC_DEBUGGING) != 0)
7816 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7817 if (relstart == NULL)
7820 /* Run through the relocs to see which toc entries might be
7822 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7824 enum elf_ppc64_reloc_type r_type;
7825 unsigned long r_symndx;
7827 struct elf_link_hash_entry *h;
7828 Elf_Internal_Sym *sym;
7831 r_type = ELF64_R_TYPE (rel->r_info);
7838 case R_PPC64_TOC16_LO:
7839 case R_PPC64_TOC16_HI:
7840 case R_PPC64_TOC16_HA:
7841 case R_PPC64_TOC16_DS:
7842 case R_PPC64_TOC16_LO_DS:
7846 r_symndx = ELF64_R_SYM (rel->r_info);
7847 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7855 val = h->root.u.def.value;
7857 val = sym->st_value;
7858 val += rel->r_addend;
7860 if (val >= toc->size)
7863 /* Anything in the toc ought to be aligned to 8 bytes.
7864 If not, don't mark as unused. */
7870 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7878 if (elf_section_data (sec)->relocs != relstart)
7885 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7889 if (local_syms != NULL
7890 && symtab_hdr->contents != (unsigned char *) local_syms)
7894 && elf_section_data (sec)->relocs != relstart)
7901 /* Now check all kept sections that might reference the toc.
7902 Check the toc itself last. */
7903 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7906 sec = (sec == toc ? NULL
7907 : sec->next == NULL ? toc
7908 : sec->next == toc && toc->next ? toc->next
7913 if (sec->reloc_count == 0
7914 || elf_discarded_section (sec)
7915 || get_opd_info (sec)
7916 || (sec->flags & SEC_ALLOC) == 0
7917 || (sec->flags & SEC_DEBUGGING) != 0)
7920 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7921 if (relstart == NULL)
7924 /* Mark toc entries referenced as used. */
7927 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7929 enum elf_ppc64_reloc_type r_type;
7930 unsigned long r_symndx;
7932 struct elf_link_hash_entry *h;
7933 Elf_Internal_Sym *sym;
7936 r_type = ELF64_R_TYPE (rel->r_info);
7940 case R_PPC64_TOC16_LO:
7941 case R_PPC64_TOC16_HI:
7942 case R_PPC64_TOC16_HA:
7943 case R_PPC64_TOC16_DS:
7944 case R_PPC64_TOC16_LO_DS:
7945 /* In case we're taking addresses of toc entries. */
7946 case R_PPC64_ADDR64:
7953 r_symndx = ELF64_R_SYM (rel->r_info);
7954 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7965 val = h->root.u.def.value;
7967 val = sym->st_value;
7968 val += rel->r_addend;
7970 if (val >= toc->size)
7973 /* For the toc section, we only mark as used if
7974 this entry itself isn't unused. */
7977 && (used[rel->r_offset >> 3]
7978 || !skip[rel->r_offset >> 3]))
7979 /* Do all the relocs again, to catch reference
7988 /* Merge the used and skip arrays. Assume that TOC
7989 doublewords not appearing as either used or unused belong
7990 to to an entry more than one doubleword in size. */
7991 for (drop = skip, keep = used, last = 0, some_unused = 0;
7992 drop < skip + (toc->size + 7) / 8;
8013 bfd_byte *contents, *src;
8016 /* Shuffle the toc contents, and at the same time convert the
8017 skip array from booleans into offsets. */
8018 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8021 elf_section_data (toc)->this_hdr.contents = contents;
8023 for (src = contents, off = 0, drop = skip;
8024 src < contents + toc->size;
8029 *drop = (unsigned long) -1;
8035 memcpy (src - off, src, 8);
8038 toc->rawsize = toc->size;
8039 toc->size = src - contents - off;
8041 if (toc->reloc_count != 0)
8043 Elf_Internal_Rela *wrel;
8046 /* Read toc relocs. */
8047 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8049 if (relstart == NULL)
8052 /* Remove unused toc relocs, and adjust those we keep. */
8054 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
8055 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
8057 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8058 wrel->r_info = rel->r_info;
8059 wrel->r_addend = rel->r_addend;
8062 else if (!dec_dynrel_count (rel->r_info, toc, info,
8063 &local_syms, NULL, NULL))
8066 toc->reloc_count = wrel - relstart;
8067 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
8068 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
8069 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
8072 /* Adjust addends for relocs against the toc section sym. */
8073 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8075 if (sec->reloc_count == 0
8076 || elf_discarded_section (sec))
8079 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8081 if (relstart == NULL)
8084 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8086 enum elf_ppc64_reloc_type r_type;
8087 unsigned long r_symndx;
8089 struct elf_link_hash_entry *h;
8090 Elf_Internal_Sym *sym;
8092 r_type = ELF64_R_TYPE (rel->r_info);
8099 case R_PPC64_TOC16_LO:
8100 case R_PPC64_TOC16_HI:
8101 case R_PPC64_TOC16_HA:
8102 case R_PPC64_TOC16_DS:
8103 case R_PPC64_TOC16_LO_DS:
8104 case R_PPC64_ADDR64:
8108 r_symndx = ELF64_R_SYM (rel->r_info);
8109 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8113 if (sym_sec != toc || h != NULL || sym->st_value != 0)
8116 rel->r_addend -= skip[rel->r_addend >> 3];
8120 /* We shouldn't have local or global symbols defined in the TOC,
8121 but handle them anyway. */
8122 if (local_syms != NULL)
8124 Elf_Internal_Sym *sym;
8126 for (sym = local_syms;
8127 sym < local_syms + symtab_hdr->sh_info;
8129 if (sym->st_value != 0
8130 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8132 if (skip[sym->st_value >> 3] != (unsigned long) -1)
8133 sym->st_value -= skip[sym->st_value >> 3];
8136 (*_bfd_error_handler)
8137 (_("%s defined in removed toc entry"),
8138 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
8141 sym->st_shndx = SHN_ABS;
8143 symtab_hdr->contents = (unsigned char *) local_syms;
8147 /* Finally, adjust any global syms defined in the toc. */
8148 if (toc_inf.global_toc_syms)
8151 toc_inf.skip = skip;
8152 toc_inf.global_toc_syms = FALSE;
8153 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8158 if (local_syms != NULL
8159 && symtab_hdr->contents != (unsigned char *) local_syms)
8161 if (!info->keep_memory)
8164 symtab_hdr->contents = (unsigned char *) local_syms;
8172 /* Allocate space in .plt, .got and associated reloc sections for
8176 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8178 struct bfd_link_info *info;
8179 struct ppc_link_hash_table *htab;
8181 struct ppc_link_hash_entry *eh;
8182 struct ppc_dyn_relocs *p;
8183 struct got_entry *gent;
8185 if (h->root.type == bfd_link_hash_indirect)
8188 if (h->root.type == bfd_link_hash_warning)
8189 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8191 info = (struct bfd_link_info *) inf;
8192 htab = ppc_hash_table (info);
8194 if ((htab->elf.dynamic_sections_created
8196 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8197 || h->type == STT_GNU_IFUNC)
8199 struct plt_entry *pent;
8200 bfd_boolean doneone = FALSE;
8201 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8202 if (pent->plt.refcount > 0)
8204 if (!htab->elf.dynamic_sections_created
8205 || h->dynindx == -1)
8208 pent->plt.offset = s->size;
8209 s->size += PLT_ENTRY_SIZE;
8214 /* If this is the first .plt entry, make room for the special
8218 s->size += PLT_INITIAL_ENTRY_SIZE;
8220 pent->plt.offset = s->size;
8222 /* Make room for this entry. */
8223 s->size += PLT_ENTRY_SIZE;
8225 /* Make room for the .glink code. */
8228 s->size += GLINK_CALL_STUB_SIZE;
8229 /* We need bigger stubs past index 32767. */
8230 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8234 /* We also need to make an entry in the .rela.plt section. */
8237 s->size += sizeof (Elf64_External_Rela);
8241 pent->plt.offset = (bfd_vma) -1;
8244 h->plt.plist = NULL;
8250 h->plt.plist = NULL;
8254 eh = (struct ppc_link_hash_entry *) h;
8255 /* Run through the TLS GD got entries first if we're changing them
8257 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8258 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8259 if (gent->got.refcount > 0
8260 && (gent->tls_type & TLS_GD) != 0)
8262 /* This was a GD entry that has been converted to TPREL. If
8263 there happens to be a TPREL entry we can use that one. */
8264 struct got_entry *ent;
8265 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8266 if (ent->got.refcount > 0
8267 && (ent->tls_type & TLS_TPREL) != 0
8268 && ent->addend == gent->addend
8269 && ent->owner == gent->owner)
8271 gent->got.refcount = 0;
8275 /* If not, then we'll be using our own TPREL entry. */
8276 if (gent->got.refcount != 0)
8277 gent->tls_type = TLS_TLS | TLS_TPREL;
8280 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8281 if (gent->got.refcount > 0)
8286 /* Make sure this symbol is output as a dynamic symbol.
8287 Undefined weak syms won't yet be marked as dynamic,
8288 nor will all TLS symbols. */
8289 if (h->dynindx == -1
8291 && h->type != STT_GNU_IFUNC
8292 && htab->elf.dynamic_sections_created)
8294 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8298 if ((gent->tls_type & TLS_LD) != 0
8301 ppc64_tlsld_got (gent->owner)->refcount += 1;
8302 gent->got.offset = (bfd_vma) -1;
8306 if (!is_ppc64_elf (gent->owner))
8309 s = ppc64_elf_tdata (gent->owner)->got;
8310 gent->got.offset = s->size;
8312 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
8313 dyn = htab->elf.dynamic_sections_created;
8316 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8317 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8318 || h->root.type != bfd_link_hash_undefweak))
8319 rsec = ppc64_elf_tdata (gent->owner)->relgot;
8320 else if (h->type == STT_GNU_IFUNC)
8321 rsec = htab->reliplt;
8323 rsec->size += (gent->tls_type & eh->tls_mask & TLS_GD
8324 ? 2 * sizeof (Elf64_External_Rela)
8325 : sizeof (Elf64_External_Rela));
8328 gent->got.offset = (bfd_vma) -1;
8330 if (eh->dyn_relocs == NULL
8331 || (!htab->elf.dynamic_sections_created
8332 && h->type != STT_GNU_IFUNC))
8335 /* In the shared -Bsymbolic case, discard space allocated for
8336 dynamic pc-relative relocs against symbols which turn out to be
8337 defined in regular objects. For the normal shared case, discard
8338 space for relocs that have become local due to symbol visibility
8343 /* Relocs that use pc_count are those that appear on a call insn,
8344 or certain REL relocs (see must_be_dyn_reloc) that can be
8345 generated via assembly. We want calls to protected symbols to
8346 resolve directly to the function rather than going via the plt.
8347 If people want function pointer comparisons to work as expected
8348 then they should avoid writing weird assembly. */
8349 if (SYMBOL_CALLS_LOCAL (info, h))
8351 struct ppc_dyn_relocs **pp;
8353 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8355 p->count -= p->pc_count;
8364 /* Also discard relocs on undefined weak syms with non-default
8366 if (eh->dyn_relocs != NULL
8367 && h->root.type == bfd_link_hash_undefweak)
8369 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8370 eh->dyn_relocs = NULL;
8372 /* Make sure this symbol is output as a dynamic symbol.
8373 Undefined weak syms won't yet be marked as dynamic. */
8374 else if (h->dynindx == -1
8375 && !h->forced_local)
8377 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8382 else if (h->type == STT_GNU_IFUNC)
8384 if (!h->non_got_ref)
8385 eh->dyn_relocs = NULL;
8387 else if (ELIMINATE_COPY_RELOCS)
8389 /* For the non-shared case, discard space for relocs against
8390 symbols which turn out to need copy relocs or are not
8396 /* Make sure this symbol is output as a dynamic symbol.
8397 Undefined weak syms won't yet be marked as dynamic. */
8398 if (h->dynindx == -1
8399 && !h->forced_local)
8401 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8405 /* If that succeeded, we know we'll be keeping all the
8407 if (h->dynindx != -1)
8411 eh->dyn_relocs = NULL;
8416 /* Finally, allocate space. */
8417 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8419 asection *sreloc = elf_section_data (p->sec)->sreloc;
8420 if (!htab->elf.dynamic_sections_created)
8421 sreloc = htab->reliplt;
8422 sreloc->size += p->count * sizeof (Elf64_External_Rela);
8428 /* Find any dynamic relocs that apply to read-only sections. */
8431 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8433 struct ppc_link_hash_entry *eh;
8434 struct ppc_dyn_relocs *p;
8436 if (h->root.type == bfd_link_hash_warning)
8437 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8439 eh = (struct ppc_link_hash_entry *) h;
8440 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8442 asection *s = p->sec->output_section;
8444 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8446 struct bfd_link_info *info = inf;
8448 info->flags |= DF_TEXTREL;
8450 /* Not an error, just cut short the traversal. */
8457 /* Set the sizes of the dynamic sections. */
8460 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8461 struct bfd_link_info *info)
8463 struct ppc_link_hash_table *htab;
8469 htab = ppc_hash_table (info);
8470 dynobj = htab->elf.dynobj;
8474 if (htab->elf.dynamic_sections_created)
8476 /* Set the contents of the .interp section to the interpreter. */
8477 if (info->executable)
8479 s = bfd_get_section_by_name (dynobj, ".interp");
8482 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8483 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8487 /* Set up .got offsets for local syms, and space for local dynamic
8489 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8491 struct got_entry **lgot_ents;
8492 struct got_entry **end_lgot_ents;
8493 struct plt_entry **local_plt;
8494 struct plt_entry **end_local_plt;
8496 bfd_size_type locsymcount;
8497 Elf_Internal_Shdr *symtab_hdr;
8500 if (!is_ppc64_elf (ibfd))
8503 for (s = ibfd->sections; s != NULL; s = s->next)
8505 struct ppc_dyn_relocs *p;
8507 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8509 if (!bfd_is_abs_section (p->sec)
8510 && bfd_is_abs_section (p->sec->output_section))
8512 /* Input section has been discarded, either because
8513 it is a copy of a linkonce section or due to
8514 linker script /DISCARD/, so we'll be discarding
8517 else if (p->count != 0)
8519 srel = elf_section_data (p->sec)->sreloc;
8520 if (!htab->elf.dynamic_sections_created)
8521 srel = htab->reliplt;
8522 srel->size += p->count * sizeof (Elf64_External_Rela);
8523 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8524 info->flags |= DF_TEXTREL;
8529 lgot_ents = elf_local_got_ents (ibfd);
8533 symtab_hdr = &elf_symtab_hdr (ibfd);
8534 locsymcount = symtab_hdr->sh_info;
8535 end_lgot_ents = lgot_ents + locsymcount;
8536 local_plt = (struct plt_entry **) end_lgot_ents;
8537 end_local_plt = local_plt + locsymcount;
8538 lgot_masks = (char *) end_local_plt;
8539 s = ppc64_elf_tdata (ibfd)->got;
8540 srel = ppc64_elf_tdata (ibfd)->relgot;
8541 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
8543 struct got_entry *ent;
8545 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
8546 if (ent->got.refcount > 0)
8548 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
8550 ppc64_tlsld_got (ibfd)->refcount += 1;
8551 ent->got.offset = (bfd_vma) -1;
8555 unsigned int num = 1;
8556 ent->got.offset = s->size;
8557 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
8561 srel->size += num * sizeof (Elf64_External_Rela);
8562 else if ((*lgot_masks & PLT_IFUNC) != 0)
8563 htab->reliplt->size += num * sizeof (Elf64_External_Rela);
8567 ent->got.offset = (bfd_vma) -1;
8570 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8571 for (; local_plt < end_local_plt; ++local_plt)
8573 struct plt_entry *ent;
8575 for (ent = *local_plt; ent != NULL; ent = ent->next)
8576 if (ent->plt.refcount > 0)
8578 asection *s = htab->iplt;
8580 ent->plt.offset = s->size;
8581 s->size += PLT_ENTRY_SIZE;
8583 htab->reliplt->size += sizeof (Elf64_External_Rela);
8586 ent->plt.offset = (bfd_vma) -1;
8590 /* Allocate global sym .plt and .got entries, and space for global
8591 sym dynamic relocs. */
8592 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
8594 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8596 if (!is_ppc64_elf (ibfd))
8599 if (ppc64_tlsld_got (ibfd)->refcount > 0)
8601 s = ppc64_elf_tdata (ibfd)->got;
8602 ppc64_tlsld_got (ibfd)->offset = s->size;
8606 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
8607 srel->size += sizeof (Elf64_External_Rela);
8611 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
8614 /* We now have determined the sizes of the various dynamic sections.
8615 Allocate memory for them. */
8617 for (s = dynobj->sections; s != NULL; s = s->next)
8619 if ((s->flags & SEC_LINKER_CREATED) == 0)
8622 if (s == htab->brlt || s == htab->relbrlt)
8623 /* These haven't been allocated yet; don't strip. */
8625 else if (s == htab->got
8629 || s == htab->dynbss)
8631 /* Strip this section if we don't need it; see the
8634 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8638 if (s != htab->relplt)
8641 /* We use the reloc_count field as a counter if we need
8642 to copy relocs into the output file. */
8648 /* It's not one of our sections, so don't allocate space. */
8654 /* If we don't need this section, strip it from the
8655 output file. This is mostly to handle .rela.bss and
8656 .rela.plt. We must create both sections in
8657 create_dynamic_sections, because they must be created
8658 before the linker maps input sections to output
8659 sections. The linker does that before
8660 adjust_dynamic_symbol is called, and it is that
8661 function which decides whether anything needs to go
8662 into these sections. */
8663 s->flags |= SEC_EXCLUDE;
8667 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8670 /* Allocate memory for the section contents. We use bfd_zalloc
8671 here in case unused entries are not reclaimed before the
8672 section's contents are written out. This should not happen,
8673 but this way if it does we get a R_PPC64_NONE reloc in .rela
8674 sections instead of garbage.
8675 We also rely on the section contents being zero when writing
8677 s->contents = bfd_zalloc (dynobj, s->size);
8678 if (s->contents == NULL)
8682 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8684 if (!is_ppc64_elf (ibfd))
8687 s = ppc64_elf_tdata (ibfd)->got;
8688 if (s != NULL && s != htab->got)
8691 s->flags |= SEC_EXCLUDE;
8694 s->contents = bfd_zalloc (ibfd, s->size);
8695 if (s->contents == NULL)
8699 s = ppc64_elf_tdata (ibfd)->relgot;
8703 s->flags |= SEC_EXCLUDE;
8706 s->contents = bfd_zalloc (ibfd, s->size);
8707 if (s->contents == NULL)
8715 if (htab->elf.dynamic_sections_created)
8717 /* Add some entries to the .dynamic section. We fill in the
8718 values later, in ppc64_elf_finish_dynamic_sections, but we
8719 must add the entries now so that we get the correct size for
8720 the .dynamic section. The DT_DEBUG entry is filled in by the
8721 dynamic linker and used by the debugger. */
8722 #define add_dynamic_entry(TAG, VAL) \
8723 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8725 if (info->executable)
8727 if (!add_dynamic_entry (DT_DEBUG, 0))
8731 if (htab->plt != NULL && htab->plt->size != 0)
8733 if (!add_dynamic_entry (DT_PLTGOT, 0)
8734 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8735 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8736 || !add_dynamic_entry (DT_JMPREL, 0)
8737 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
8743 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8744 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
8748 if (!htab->no_tls_get_addr_opt
8749 && htab->tls_get_addr_fd != NULL
8750 && htab->tls_get_addr_fd->elf.plt.plist != NULL
8751 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
8756 if (!add_dynamic_entry (DT_RELA, 0)
8757 || !add_dynamic_entry (DT_RELASZ, 0)
8758 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
8761 /* If any dynamic relocs apply to a read-only section,
8762 then we need a DT_TEXTREL entry. */
8763 if ((info->flags & DF_TEXTREL) == 0)
8764 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
8766 if ((info->flags & DF_TEXTREL) != 0)
8768 if (!add_dynamic_entry (DT_TEXTREL, 0))
8773 #undef add_dynamic_entry
8778 /* Determine the type of stub needed, if any, for a call. */
8780 static inline enum ppc_stub_type
8781 ppc_type_of_stub (asection *input_sec,
8782 const Elf_Internal_Rela *rel,
8783 struct ppc_link_hash_entry **hash,
8784 struct plt_entry **plt_ent,
8785 bfd_vma destination)
8787 struct ppc_link_hash_entry *h = *hash;
8789 bfd_vma branch_offset;
8790 bfd_vma max_branch_offset;
8791 enum elf_ppc64_reloc_type r_type;
8795 struct plt_entry *ent;
8796 struct ppc_link_hash_entry *fdh = h;
8798 && h->oh->is_func_descriptor)
8799 fdh = ppc_follow_link (h->oh);
8801 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
8802 if (ent->addend == rel->r_addend
8803 && ent->plt.offset != (bfd_vma) -1)
8807 return ppc_stub_plt_call;
8810 /* Here, we know we don't have a plt entry. If we don't have a
8811 either a defined function descriptor or a defined entry symbol
8812 in a regular object file, then it is pointless trying to make
8813 any other type of stub. */
8814 if (!((fdh->elf.root.type == bfd_link_hash_defined
8815 || fdh->elf.root.type == bfd_link_hash_defweak)
8816 && fdh->elf.root.u.def.section->output_section != NULL)
8817 && !((h->elf.root.type == bfd_link_hash_defined
8818 || h->elf.root.type == bfd_link_hash_defweak)
8819 && h->elf.root.u.def.section->output_section != NULL))
8820 return ppc_stub_none;
8822 else if (elf_local_got_ents (input_sec->owner) != NULL)
8824 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
8825 struct plt_entry **local_plt = (struct plt_entry **)
8826 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
8827 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
8829 if (local_plt[r_symndx] != NULL)
8831 struct plt_entry *ent;
8833 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
8834 if (ent->addend == rel->r_addend
8835 && ent->plt.offset != (bfd_vma) -1)
8838 return ppc_stub_plt_call;
8843 /* Determine where the call point is. */
8844 location = (input_sec->output_offset
8845 + input_sec->output_section->vma
8848 branch_offset = destination - location;
8849 r_type = ELF64_R_TYPE (rel->r_info);
8851 /* Determine if a long branch stub is needed. */
8852 max_branch_offset = 1 << 25;
8853 if (r_type != R_PPC64_REL24)
8854 max_branch_offset = 1 << 15;
8856 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8857 /* We need a stub. Figure out whether a long_branch or plt_branch
8859 return ppc_stub_long_branch;
8861 return ppc_stub_none;
8864 /* Build a .plt call stub. */
8866 static inline bfd_byte *
8867 build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
8869 #define PPC_LO(v) ((v) & 0xffff)
8870 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8871 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8873 if (PPC_HA (offset) != 0)
8877 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8878 r[1].r_offset = r[0].r_offset + 8;
8879 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8880 r[1].r_addend = r[0].r_addend;
8881 if (PPC_HA (offset + 16) != PPC_HA (offset))
8883 r[2].r_offset = r[1].r_offset + 4;
8884 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
8885 r[2].r_addend = r[0].r_addend;
8889 r[2].r_offset = r[1].r_offset + 8;
8890 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8891 r[2].r_addend = r[0].r_addend + 8;
8892 r[3].r_offset = r[2].r_offset + 4;
8893 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8894 r[3].r_addend = r[0].r_addend + 16;
8897 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8898 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8899 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8900 if (PPC_HA (offset + 16) != PPC_HA (offset))
8902 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
8905 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8906 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
8907 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
8908 bfd_put_32 (obfd, BCTR, p), p += 4;
8915 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8916 if (PPC_HA (offset + 16) != PPC_HA (offset))
8918 r[1].r_offset = r[0].r_offset + 4;
8919 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
8920 r[1].r_addend = r[0].r_addend;
8924 r[1].r_offset = r[0].r_offset + 8;
8925 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8926 r[1].r_addend = r[0].r_addend + 16;
8927 r[2].r_offset = r[1].r_offset + 4;
8928 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8929 r[2].r_addend = r[0].r_addend + 8;
8932 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8933 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
8934 if (PPC_HA (offset + 16) != PPC_HA (offset))
8936 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
8939 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8940 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
8941 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
8942 bfd_put_32 (obfd, BCTR, p), p += 4;
8947 /* Build a special .plt call stub for __tls_get_addr. */
8949 #define LD_R11_0R3 0xe9630000
8950 #define LD_R12_0R3 0xe9830000
8951 #define MR_R0_R3 0x7c601b78
8952 #define CMPDI_R11_0 0x2c2b0000
8953 #define ADD_R3_R12_R13 0x7c6c6a14
8954 #define BEQLR 0x4d820020
8955 #define MR_R3_R0 0x7c030378
8956 #define MFLR_R11 0x7d6802a6
8957 #define STD_R11_0R1 0xf9610000
8958 #define BCTRL 0x4e800421
8959 #define LD_R11_0R1 0xe9610000
8960 #define LD_R2_0R1 0xe8410000
8961 #define MTLR_R11 0x7d6803a6
8963 static inline bfd_byte *
8964 build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset,
8965 Elf_Internal_Rela *r)
8967 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
8968 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
8969 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
8970 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
8971 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
8972 bfd_put_32 (obfd, BEQLR, p), p += 4;
8973 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
8974 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
8975 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
8978 r[0].r_offset += 9 * 4;
8979 p = build_plt_stub (obfd, p, offset, r);
8980 bfd_put_32 (obfd, BCTRL, p - 4);
8982 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
8983 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
8984 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
8985 bfd_put_32 (obfd, BLR, p), p += 4;
8990 static Elf_Internal_Rela *
8991 get_relocs (asection *sec, int count)
8993 Elf_Internal_Rela *relocs;
8994 struct bfd_elf_section_data *elfsec_data;
8996 elfsec_data = elf_section_data (sec);
8997 relocs = elfsec_data->relocs;
9000 bfd_size_type relsize;
9001 relsize = sec->reloc_count * sizeof (*relocs);
9002 relocs = bfd_alloc (sec->owner, relsize);
9005 elfsec_data->relocs = relocs;
9006 elfsec_data->rel_hdr.sh_size = (sec->reloc_count
9007 * sizeof (Elf64_External_Rela));
9008 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
9009 sec->reloc_count = 0;
9011 relocs += sec->reloc_count;
9012 sec->reloc_count += count;
9017 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9019 struct ppc_stub_hash_entry *stub_entry;
9020 struct ppc_branch_hash_entry *br_entry;
9021 struct bfd_link_info *info;
9022 struct ppc_link_hash_table *htab;
9027 Elf_Internal_Rela *r;
9030 /* Massage our args to the form they really have. */
9031 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9034 htab = ppc_hash_table (info);
9036 /* Make a note of the offset within the stubs for this entry. */
9037 stub_entry->stub_offset = stub_entry->stub_sec->size;
9038 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9040 htab->stub_count[stub_entry->stub_type - 1] += 1;
9041 switch (stub_entry->stub_type)
9043 case ppc_stub_long_branch:
9044 case ppc_stub_long_branch_r2off:
9045 /* Branches are relative. This is where we are going to. */
9046 off = dest = (stub_entry->target_value
9047 + stub_entry->target_section->output_offset
9048 + stub_entry->target_section->output_section->vma);
9050 /* And this is where we are coming from. */
9051 off -= (stub_entry->stub_offset
9052 + stub_entry->stub_sec->output_offset
9053 + stub_entry->stub_sec->output_section->vma);
9056 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9060 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9061 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9062 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9065 if (PPC_HA (r2off) != 0)
9068 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9071 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9075 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9077 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9079 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
9080 stub_entry->root.string);
9081 htab->stub_error = TRUE;
9085 if (info->emitrelocations)
9087 r = get_relocs (stub_entry->stub_sec, 1);
9090 r->r_offset = loc - stub_entry->stub_sec->contents;
9091 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9093 if (stub_entry->h != NULL)
9095 struct elf_link_hash_entry **hashes;
9096 unsigned long symndx;
9097 struct ppc_link_hash_entry *h;
9099 hashes = elf_sym_hashes (htab->stub_bfd);
9102 bfd_size_type hsize;
9104 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9105 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9108 elf_sym_hashes (htab->stub_bfd) = hashes;
9109 htab->stub_globals = 1;
9111 symndx = htab->stub_globals++;
9113 hashes[symndx] = &h->elf;
9114 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9115 if (h->oh != NULL && h->oh->is_func)
9116 h = ppc_follow_link (h->oh);
9117 if (h->elf.root.u.def.section != stub_entry->target_section)
9118 /* H is an opd symbol. The addend must be zero. */
9122 off = (h->elf.root.u.def.value
9123 + h->elf.root.u.def.section->output_offset
9124 + h->elf.root.u.def.section->output_section->vma);
9131 case ppc_stub_plt_branch:
9132 case ppc_stub_plt_branch_r2off:
9133 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9134 stub_entry->root.string + 9,
9136 if (br_entry == NULL)
9138 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
9139 stub_entry->root.string);
9140 htab->stub_error = TRUE;
9144 dest = (stub_entry->target_value
9145 + stub_entry->target_section->output_offset
9146 + stub_entry->target_section->output_section->vma);
9148 bfd_put_64 (htab->brlt->owner, dest,
9149 htab->brlt->contents + br_entry->offset);
9151 if (br_entry->iter == htab->stub_iteration)
9155 if (htab->relbrlt != NULL)
9157 /* Create a reloc for the branch lookup table entry. */
9158 Elf_Internal_Rela rela;
9161 rela.r_offset = (br_entry->offset
9162 + htab->brlt->output_offset
9163 + htab->brlt->output_section->vma);
9164 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9165 rela.r_addend = dest;
9167 rl = htab->relbrlt->contents;
9168 rl += (htab->relbrlt->reloc_count++
9169 * sizeof (Elf64_External_Rela));
9170 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9172 else if (info->emitrelocations)
9174 r = get_relocs (htab->brlt, 1);
9177 /* brlt, being SEC_LINKER_CREATED does not go through the
9178 normal reloc processing. Symbols and offsets are not
9179 translated from input file to output file form, so
9180 set up the offset per the output file. */
9181 r->r_offset = (br_entry->offset
9182 + htab->brlt->output_offset
9183 + htab->brlt->output_section->vma);
9184 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9189 dest = (br_entry->offset
9190 + htab->brlt->output_offset
9191 + htab->brlt->output_section->vma);
9194 - elf_gp (htab->brlt->output_section->owner)
9195 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9197 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9199 (*_bfd_error_handler)
9200 (_("linkage table error against `%s'"),
9201 stub_entry->root.string);
9202 bfd_set_error (bfd_error_bad_value);
9203 htab->stub_error = TRUE;
9207 if (info->emitrelocations)
9209 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
9212 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9213 if (bfd_big_endian (info->output_bfd))
9215 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
9217 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9218 r[0].r_addend = dest;
9219 if (PPC_HA (off) != 0)
9221 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9222 r[1].r_offset = r[0].r_offset + 4;
9223 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9224 r[1].r_addend = r[0].r_addend;
9228 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9230 if (PPC_HA (off) != 0)
9233 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9235 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9240 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9247 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9248 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9249 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9252 if (PPC_HA (off) != 0)
9255 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9257 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9262 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9266 if (PPC_HA (r2off) != 0)
9269 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9272 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9275 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
9277 bfd_put_32 (htab->stub_bfd, BCTR, loc);
9280 case ppc_stub_plt_call:
9281 if (stub_entry->h != NULL
9282 && stub_entry->h->is_func_descriptor
9283 && stub_entry->h->oh != NULL)
9285 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
9287 /* If the old-ABI "dot-symbol" is undefined make it weak so
9288 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9289 FIXME: We used to define the symbol on one of the call
9290 stubs instead, which is why we test symbol section id
9291 against htab->top_id in various places. Likely all
9292 these checks could now disappear. */
9293 if (fh->elf.root.type == bfd_link_hash_undefined)
9294 fh->elf.root.type = bfd_link_hash_undefweak;
9297 /* Now build the stub. */
9298 dest = stub_entry->plt_ent->plt.offset & ~1;
9299 if (dest >= (bfd_vma) -2)
9303 if (!htab->elf.dynamic_sections_created
9304 || stub_entry->h == NULL
9305 || stub_entry->h->elf.dynindx == -1)
9308 dest += plt->output_offset + plt->output_section->vma;
9310 if (stub_entry->h == NULL
9311 && (stub_entry->plt_ent->plt.offset & 1) == 0)
9313 Elf_Internal_Rela rela;
9316 rela.r_offset = dest;
9317 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
9318 rela.r_addend = (stub_entry->target_value
9319 + stub_entry->target_section->output_offset
9320 + stub_entry->target_section->output_section->vma);
9322 rl = (htab->reliplt->contents
9323 + (htab->reliplt->reloc_count++
9324 * sizeof (Elf64_External_Rela)));
9325 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
9326 stub_entry->plt_ent->plt.offset |= 1;
9330 - elf_gp (plt->output_section->owner)
9331 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9333 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9335 (*_bfd_error_handler)
9336 (_("linkage table error against `%s'"),
9337 stub_entry->h != NULL
9338 ? stub_entry->h->elf.root.root.string
9340 bfd_set_error (bfd_error_bad_value);
9341 htab->stub_error = TRUE;
9346 if (info->emitrelocations)
9348 r = get_relocs (stub_entry->stub_sec,
9349 (2 + (PPC_HA (off) != 0)
9350 + (PPC_HA (off + 16) == PPC_HA (off))));
9353 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9354 if (bfd_big_endian (info->output_bfd))
9356 r[0].r_addend = dest;
9358 if (stub_entry->h != NULL
9359 && (stub_entry->h == htab->tls_get_addr_fd
9360 || stub_entry->h == htab->tls_get_addr)
9361 && !htab->no_tls_get_addr_opt)
9362 p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r);
9364 p = build_plt_stub (htab->stub_bfd, loc, off, r);
9373 stub_entry->stub_sec->size += size;
9375 if (htab->emit_stub_syms)
9377 struct elf_link_hash_entry *h;
9380 const char *const stub_str[] = { "long_branch",
9381 "long_branch_r2off",
9386 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
9387 len2 = strlen (stub_entry->root.string);
9388 name = bfd_malloc (len1 + len2 + 2);
9391 memcpy (name, stub_entry->root.string, 9);
9392 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
9393 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
9394 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
9397 if (h->root.type == bfd_link_hash_new)
9399 h->root.type = bfd_link_hash_defined;
9400 h->root.u.def.section = stub_entry->stub_sec;
9401 h->root.u.def.value = stub_entry->stub_offset;
9404 h->ref_regular_nonweak = 1;
9405 h->forced_local = 1;
9413 /* As above, but don't actually build the stub. Just bump offset so
9414 we know stub section sizes, and select plt_branch stubs where
9415 long_branch stubs won't do. */
9418 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9420 struct ppc_stub_hash_entry *stub_entry;
9421 struct bfd_link_info *info;
9422 struct ppc_link_hash_table *htab;
9426 /* Massage our args to the form they really have. */
9427 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9430 htab = ppc_hash_table (info);
9432 if (stub_entry->stub_type == ppc_stub_plt_call)
9435 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
9436 if (off >= (bfd_vma) -2)
9439 if (!htab->elf.dynamic_sections_created
9440 || stub_entry->h == NULL
9441 || stub_entry->h->elf.dynindx == -1)
9443 off += (plt->output_offset
9444 + plt->output_section->vma
9445 - elf_gp (plt->output_section->owner)
9446 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9448 size = PLT_CALL_STUB_SIZE;
9449 if (PPC_HA (off) == 0)
9451 if (PPC_HA (off + 16) != PPC_HA (off))
9453 if (stub_entry->h != NULL
9454 && (stub_entry->h == htab->tls_get_addr_fd
9455 || stub_entry->h == htab->tls_get_addr)
9456 && !htab->no_tls_get_addr_opt)
9458 if (info->emitrelocations)
9460 stub_entry->stub_sec->reloc_count
9461 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
9462 stub_entry->stub_sec->flags |= SEC_RELOC;
9467 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9471 off = (stub_entry->target_value
9472 + stub_entry->target_section->output_offset
9473 + stub_entry->target_section->output_section->vma);
9474 off -= (stub_entry->stub_sec->size
9475 + stub_entry->stub_sec->output_offset
9476 + stub_entry->stub_sec->output_section->vma);
9478 /* Reset the stub type from the plt variant in case we now
9479 can reach with a shorter stub. */
9480 if (stub_entry->stub_type >= ppc_stub_plt_branch)
9481 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
9484 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9486 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9487 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9489 if (PPC_HA (r2off) != 0)
9494 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9495 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9497 struct ppc_branch_hash_entry *br_entry;
9499 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9500 stub_entry->root.string + 9,
9502 if (br_entry == NULL)
9504 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
9505 stub_entry->root.string);
9506 htab->stub_error = TRUE;
9510 if (br_entry->iter != htab->stub_iteration)
9512 br_entry->iter = htab->stub_iteration;
9513 br_entry->offset = htab->brlt->size;
9514 htab->brlt->size += 8;
9516 if (htab->relbrlt != NULL)
9517 htab->relbrlt->size += sizeof (Elf64_External_Rela);
9518 else if (info->emitrelocations)
9520 htab->brlt->reloc_count += 1;
9521 htab->brlt->flags |= SEC_RELOC;
9525 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
9526 off = (br_entry->offset
9527 + htab->brlt->output_offset
9528 + htab->brlt->output_section->vma
9529 - elf_gp (htab->brlt->output_section->owner)
9530 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9532 if (info->emitrelocations)
9534 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
9535 stub_entry->stub_sec->flags |= SEC_RELOC;
9538 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9541 if (PPC_HA (off) != 0)
9547 if (PPC_HA (off) != 0)
9550 if (PPC_HA (r2off) != 0)
9554 else if (info->emitrelocations)
9556 stub_entry->stub_sec->reloc_count += 1;
9557 stub_entry->stub_sec->flags |= SEC_RELOC;
9561 stub_entry->stub_sec->size += size;
9565 /* Set up various things so that we can make a list of input sections
9566 for each output section included in the link. Returns -1 on error,
9567 0 when no stubs will be needed, and 1 on success. */
9570 ppc64_elf_setup_section_lists (bfd *output_bfd,
9571 struct bfd_link_info *info,
9575 int top_id, top_index, id;
9577 asection **input_list;
9579 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9581 htab->no_multi_toc = no_multi_toc;
9583 if (htab->brlt == NULL)
9586 /* Find the top input section id. */
9587 for (input_bfd = info->input_bfds, top_id = 3;
9589 input_bfd = input_bfd->link_next)
9591 for (section = input_bfd->sections;
9593 section = section->next)
9595 if (top_id < section->id)
9596 top_id = section->id;
9600 htab->top_id = top_id;
9601 amt = sizeof (struct map_stub) * (top_id + 1);
9602 htab->stub_group = bfd_zmalloc (amt);
9603 if (htab->stub_group == NULL)
9606 /* Set toc_off for com, und, abs and ind sections. */
9607 for (id = 0; id < 3; id++)
9608 htab->stub_group[id].toc_off = TOC_BASE_OFF;
9610 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
9612 /* We can't use output_bfd->section_count here to find the top output
9613 section index as some sections may have been removed, and
9614 strip_excluded_output_sections doesn't renumber the indices. */
9615 for (section = output_bfd->sections, top_index = 0;
9617 section = section->next)
9619 if (top_index < section->index)
9620 top_index = section->index;
9623 htab->top_index = top_index;
9624 amt = sizeof (asection *) * (top_index + 1);
9625 input_list = bfd_zmalloc (amt);
9626 htab->input_list = input_list;
9627 if (input_list == NULL)
9633 /* The linker repeatedly calls this function for each TOC input section
9634 and linker generated GOT section. Group input bfds such that the toc
9635 within a group is less than 64k in size. Will break with cute linker
9636 scripts that play games with dot in the output toc section. */
9639 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
9641 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9643 if (!htab->no_multi_toc)
9645 bfd_vma addr = isec->output_offset + isec->output_section->vma;
9646 bfd_vma off = addr - htab->toc_curr;
9648 if (off + isec->size > 0x10000)
9649 htab->toc_curr = addr;
9651 elf_gp (isec->owner) = (htab->toc_curr
9652 - elf_gp (isec->output_section->owner)
9657 /* Called after the last call to the above function. */
9660 ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
9662 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9664 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
9666 /* toc_curr tracks the TOC offset used for code sections below in
9667 ppc64_elf_next_input_section. Start off at 0x8000. */
9668 htab->toc_curr = TOC_BASE_OFF;
9671 /* No toc references were found in ISEC. If the code in ISEC makes no
9672 calls, then there's no need to use toc adjusting stubs when branching
9673 into ISEC. Actually, indirect calls from ISEC are OK as they will
9674 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
9675 needed, and 2 if a cyclical call-graph was found but no other reason
9676 for a stub was detected. If called from the top level, a return of
9677 2 means the same as a return of 0. */
9680 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9682 Elf_Internal_Rela *relstart, *rel;
9683 Elf_Internal_Sym *local_syms;
9685 struct ppc_link_hash_table *htab;
9687 /* We know none of our code bearing sections will need toc stubs. */
9688 if ((isec->flags & SEC_LINKER_CREATED) != 0)
9691 if (isec->size == 0)
9694 if (isec->output_section == NULL)
9697 if (isec->reloc_count == 0)
9700 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
9702 if (relstart == NULL)
9705 /* Look for branches to outside of this section. */
9708 htab = ppc_hash_table (info);
9709 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9711 enum elf_ppc64_reloc_type r_type;
9712 unsigned long r_symndx;
9713 struct elf_link_hash_entry *h;
9714 struct ppc_link_hash_entry *eh;
9715 Elf_Internal_Sym *sym;
9717 struct _opd_sec_data *opd;
9721 r_type = ELF64_R_TYPE (rel->r_info);
9722 if (r_type != R_PPC64_REL24
9723 && r_type != R_PPC64_REL14
9724 && r_type != R_PPC64_REL14_BRTAKEN
9725 && r_type != R_PPC64_REL14_BRNTAKEN)
9728 r_symndx = ELF64_R_SYM (rel->r_info);
9729 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
9736 /* Calls to dynamic lib functions go through a plt call stub
9738 eh = (struct ppc_link_hash_entry *) h;
9740 && (eh->elf.plt.plist != NULL
9742 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
9748 if (sym_sec == NULL)
9749 /* Ignore other undefined symbols. */
9752 /* Assume branches to other sections not included in the link need
9753 stubs too, to cover -R and absolute syms. */
9754 if (sym_sec->output_section == NULL)
9761 sym_value = sym->st_value;
9764 if (h->root.type != bfd_link_hash_defined
9765 && h->root.type != bfd_link_hash_defweak)
9767 sym_value = h->root.u.def.value;
9769 sym_value += rel->r_addend;
9771 /* If this branch reloc uses an opd sym, find the code section. */
9772 opd = get_opd_info (sym_sec);
9775 if (h == NULL && opd->adjust != NULL)
9779 adjust = opd->adjust[sym->st_value / 8];
9781 /* Assume deleted functions won't ever be called. */
9783 sym_value += adjust;
9786 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
9787 if (dest == (bfd_vma) -1)
9792 + sym_sec->output_offset
9793 + sym_sec->output_section->vma);
9795 /* Ignore branch to self. */
9796 if (sym_sec == isec)
9799 /* If the called function uses the toc, we need a stub. */
9800 if (sym_sec->has_toc_reloc
9801 || sym_sec->makes_toc_func_call)
9807 /* Assume any branch that needs a long branch stub might in fact
9808 need a plt_branch stub. A plt_branch stub uses r2. */
9809 else if (dest - (isec->output_offset
9810 + isec->output_section->vma
9811 + rel->r_offset) + (1 << 25) >= (2 << 25))
9817 /* If calling back to a section in the process of being tested, we
9818 can't say for sure that no toc adjusting stubs are needed, so
9819 don't return zero. */
9820 else if (sym_sec->call_check_in_progress)
9823 /* Branches to another section that itself doesn't have any TOC
9824 references are OK. Recursively call ourselves to check. */
9825 else if (sym_sec->id <= htab->top_id
9826 && htab->stub_group[sym_sec->id].toc_off == 0)
9830 /* Mark current section as indeterminate, so that other
9831 sections that call back to current won't be marked as
9833 isec->call_check_in_progress = 1;
9834 recur = toc_adjusting_stub_needed (info, sym_sec);
9835 isec->call_check_in_progress = 0;
9839 /* An error. Exit. */
9843 else if (recur <= 1)
9845 /* Known result. Mark as checked and set section flag. */
9846 htab->stub_group[sym_sec->id].toc_off = 1;
9849 sym_sec->makes_toc_func_call = 1;
9856 /* Unknown result. Continue checking. */
9862 if (local_syms != NULL
9863 && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms))
9865 if (elf_section_data (isec)->relocs != relstart)
9871 /* The linker repeatedly calls this function for each input section,
9872 in the order that input sections are linked into output sections.
9873 Build lists of input sections to determine groupings between which
9874 we may insert linker stubs. */
9877 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
9879 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9881 if ((isec->output_section->flags & SEC_CODE) != 0
9882 && isec->output_section->index <= htab->top_index)
9884 asection **list = htab->input_list + isec->output_section->index;
9885 /* Steal the link_sec pointer for our list. */
9886 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
9887 /* This happens to make the list in reverse order,
9888 which is what we want. */
9889 PREV_SEC (isec) = *list;
9893 if (htab->multi_toc_needed)
9895 /* If a code section has a function that uses the TOC then we need
9896 to use the right TOC (obviously). Also, make sure that .opd gets
9897 the correct TOC value for R_PPC64_TOC relocs that don't have or
9898 can't find their function symbol (shouldn't ever happen now).
9899 Also specially treat .fixup for the linux kernel. .fixup
9900 contains branches, but only back to the function that hit an
9902 if (isec->has_toc_reloc
9903 || (isec->flags & SEC_CODE) == 0
9904 || strcmp (isec->name, ".fixup") == 0)
9906 if (elf_gp (isec->owner) != 0)
9907 htab->toc_curr = elf_gp (isec->owner);
9909 else if (htab->stub_group[isec->id].toc_off == 0)
9911 int ret = toc_adjusting_stub_needed (info, isec);
9915 isec->makes_toc_func_call = ret & 1;
9919 /* Functions that don't use the TOC can belong in any TOC group.
9920 Use the last TOC base. This happens to make _init and _fini
9922 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9926 /* See whether we can group stub sections together. Grouping stub
9927 sections may result in fewer stubs. More importantly, we need to
9928 put all .init* and .fini* stubs at the beginning of the .init or
9929 .fini output sections respectively, because glibc splits the
9930 _init and _fini functions into multiple parts. Putting a stub in
9931 the middle of a function is not a good idea. */
9934 group_sections (struct ppc_link_hash_table *htab,
9935 bfd_size_type stub_group_size,
9936 bfd_boolean stubs_always_before_branch)
9939 bfd_size_type stub14_group_size;
9940 bfd_boolean suppress_size_errors;
9942 suppress_size_errors = FALSE;
9943 stub14_group_size = stub_group_size;
9944 if (stub_group_size == 1)
9946 /* Default values. */
9947 if (stubs_always_before_branch)
9949 stub_group_size = 0x1e00000;
9950 stub14_group_size = 0x7800;
9954 stub_group_size = 0x1c00000;
9955 stub14_group_size = 0x7000;
9957 suppress_size_errors = TRUE;
9960 list = htab->input_list + htab->top_index;
9963 asection *tail = *list;
9964 while (tail != NULL)
9968 bfd_size_type total;
9969 bfd_boolean big_sec;
9974 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9975 ? stub14_group_size : stub_group_size);
9976 if (big_sec && !suppress_size_errors)
9977 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9979 curr_toc = htab->stub_group[tail->id].toc_off;
9981 while ((prev = PREV_SEC (curr)) != NULL
9982 && ((total += curr->output_offset - prev->output_offset)
9983 < (ppc64_elf_section_data (prev)->has_14bit_branch
9984 ? stub14_group_size : stub_group_size))
9985 && htab->stub_group[prev->id].toc_off == curr_toc)
9988 /* OK, the size from the start of CURR to the end is less
9989 than stub_group_size and thus can be handled by one stub
9990 section. (or the tail section is itself larger than
9991 stub_group_size, in which case we may be toast.) We
9992 should really be keeping track of the total size of stubs
9993 added here, as stubs contribute to the final output
9994 section size. That's a little tricky, and this way will
9995 only break if stubs added make the total size more than
9996 2^25, ie. for the default stub_group_size, if stubs total
9997 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10000 prev = PREV_SEC (tail);
10001 /* Set up this stub group. */
10002 htab->stub_group[tail->id].link_sec = curr;
10004 while (tail != curr && (tail = prev) != NULL);
10006 /* But wait, there's more! Input sections up to stub_group_size
10007 bytes before the stub section can be handled by it too.
10008 Don't do this if we have a really large section after the
10009 stubs, as adding more stubs increases the chance that
10010 branches may not reach into the stub section. */
10011 if (!stubs_always_before_branch && !big_sec)
10014 while (prev != NULL
10015 && ((total += tail->output_offset - prev->output_offset)
10016 < (ppc64_elf_section_data (prev)->has_14bit_branch
10017 ? stub14_group_size : stub_group_size))
10018 && htab->stub_group[prev->id].toc_off == curr_toc)
10021 prev = PREV_SEC (tail);
10022 htab->stub_group[tail->id].link_sec = curr;
10028 while (list-- != htab->input_list);
10029 free (htab->input_list);
10033 /* Determine and set the size of the stub section for a final link.
10035 The basic idea here is to examine all the relocations looking for
10036 PC-relative calls to a target that is unreachable with a "bl"
10040 ppc64_elf_size_stubs (bfd *output_bfd,
10041 struct bfd_link_info *info,
10042 bfd_signed_vma group_size,
10043 asection *(*add_stub_section) (const char *, asection *),
10044 void (*layout_sections_again) (void))
10046 bfd_size_type stub_group_size;
10047 bfd_boolean stubs_always_before_branch;
10048 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10050 /* Stash our params away. */
10051 htab->add_stub_section = add_stub_section;
10052 htab->layout_sections_again = layout_sections_again;
10053 stubs_always_before_branch = group_size < 0;
10054 if (group_size < 0)
10055 stub_group_size = -group_size;
10057 stub_group_size = group_size;
10059 group_sections (htab, stub_group_size, stubs_always_before_branch);
10064 unsigned int bfd_indx;
10065 asection *stub_sec;
10067 htab->stub_iteration += 1;
10069 for (input_bfd = info->input_bfds, bfd_indx = 0;
10071 input_bfd = input_bfd->link_next, bfd_indx++)
10073 Elf_Internal_Shdr *symtab_hdr;
10075 Elf_Internal_Sym *local_syms = NULL;
10077 if (!is_ppc64_elf (input_bfd))
10080 /* We'll need the symbol table in a second. */
10081 symtab_hdr = &elf_symtab_hdr (input_bfd);
10082 if (symtab_hdr->sh_info == 0)
10085 /* Walk over each section attached to the input bfd. */
10086 for (section = input_bfd->sections;
10088 section = section->next)
10090 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
10092 /* If there aren't any relocs, then there's nothing more
10094 if ((section->flags & SEC_RELOC) == 0
10095 || (section->flags & SEC_ALLOC) == 0
10096 || (section->flags & SEC_LOAD) == 0
10097 || (section->flags & SEC_CODE) == 0
10098 || section->reloc_count == 0)
10101 /* If this section is a link-once section that will be
10102 discarded, then don't create any stubs. */
10103 if (section->output_section == NULL
10104 || section->output_section->owner != output_bfd)
10107 /* Get the relocs. */
10109 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
10110 info->keep_memory);
10111 if (internal_relocs == NULL)
10112 goto error_ret_free_local;
10114 /* Now examine each relocation. */
10115 irela = internal_relocs;
10116 irelaend = irela + section->reloc_count;
10117 for (; irela < irelaend; irela++)
10119 enum elf_ppc64_reloc_type r_type;
10120 unsigned int r_indx;
10121 enum ppc_stub_type stub_type;
10122 struct ppc_stub_hash_entry *stub_entry;
10123 asection *sym_sec, *code_sec;
10124 bfd_vma sym_value, code_value;
10125 bfd_vma destination;
10126 bfd_boolean ok_dest;
10127 struct ppc_link_hash_entry *hash;
10128 struct ppc_link_hash_entry *fdh;
10129 struct elf_link_hash_entry *h;
10130 Elf_Internal_Sym *sym;
10132 const asection *id_sec;
10133 struct _opd_sec_data *opd;
10134 struct plt_entry *plt_ent;
10136 r_type = ELF64_R_TYPE (irela->r_info);
10137 r_indx = ELF64_R_SYM (irela->r_info);
10139 if (r_type >= R_PPC64_max)
10141 bfd_set_error (bfd_error_bad_value);
10142 goto error_ret_free_internal;
10145 /* Only look for stubs on branch instructions. */
10146 if (r_type != R_PPC64_REL24
10147 && r_type != R_PPC64_REL14
10148 && r_type != R_PPC64_REL14_BRTAKEN
10149 && r_type != R_PPC64_REL14_BRNTAKEN)
10152 /* Now determine the call target, its name, value,
10154 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
10155 r_indx, input_bfd))
10156 goto error_ret_free_internal;
10157 hash = (struct ppc_link_hash_entry *) h;
10164 sym_value = sym->st_value;
10167 else if (hash->elf.root.type == bfd_link_hash_defined
10168 || hash->elf.root.type == bfd_link_hash_defweak)
10170 sym_value = hash->elf.root.u.def.value;
10171 if (sym_sec->output_section != NULL)
10174 else if (hash->elf.root.type == bfd_link_hash_undefweak
10175 || hash->elf.root.type == bfd_link_hash_undefined)
10177 /* Recognise an old ABI func code entry sym, and
10178 use the func descriptor sym instead if it is
10180 if (hash->elf.root.root.string[0] == '.'
10181 && (fdh = lookup_fdh (hash, htab)) != NULL)
10183 if (fdh->elf.root.type == bfd_link_hash_defined
10184 || fdh->elf.root.type == bfd_link_hash_defweak)
10186 sym_sec = fdh->elf.root.u.def.section;
10187 sym_value = fdh->elf.root.u.def.value;
10188 if (sym_sec->output_section != NULL)
10197 bfd_set_error (bfd_error_bad_value);
10198 goto error_ret_free_internal;
10204 sym_value += irela->r_addend;
10205 destination = (sym_value
10206 + sym_sec->output_offset
10207 + sym_sec->output_section->vma);
10210 code_sec = sym_sec;
10211 code_value = sym_value;
10212 opd = get_opd_info (sym_sec);
10217 if (hash == NULL && opd->adjust != NULL)
10219 long adjust = opd->adjust[sym_value / 8];
10222 code_value += adjust;
10223 sym_value += adjust;
10225 dest = opd_entry_value (sym_sec, sym_value,
10226 &code_sec, &code_value);
10227 if (dest != (bfd_vma) -1)
10229 destination = dest;
10232 /* Fixup old ABI sym to point at code
10234 hash->elf.root.type = bfd_link_hash_defweak;
10235 hash->elf.root.u.def.section = code_sec;
10236 hash->elf.root.u.def.value = code_value;
10241 /* Determine what (if any) linker stub is needed. */
10243 stub_type = ppc_type_of_stub (section, irela, &hash,
10244 &plt_ent, destination);
10246 if (stub_type != ppc_stub_plt_call)
10248 /* Check whether we need a TOC adjusting stub.
10249 Since the linker pastes together pieces from
10250 different object files when creating the
10251 _init and _fini functions, it may be that a
10252 call to what looks like a local sym is in
10253 fact a call needing a TOC adjustment. */
10254 if (code_sec != NULL
10255 && code_sec->output_section != NULL
10256 && (htab->stub_group[code_sec->id].toc_off
10257 != htab->stub_group[section->id].toc_off)
10258 && (code_sec->has_toc_reloc
10259 || code_sec->makes_toc_func_call))
10260 stub_type = ppc_stub_long_branch_r2off;
10263 if (stub_type == ppc_stub_none)
10266 /* __tls_get_addr calls might be eliminated. */
10267 if (stub_type != ppc_stub_plt_call
10269 && (hash == htab->tls_get_addr
10270 || hash == htab->tls_get_addr_fd)
10271 && section->has_tls_reloc
10272 && irela != internal_relocs)
10274 /* Get tls info. */
10277 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
10278 irela - 1, input_bfd))
10279 goto error_ret_free_internal;
10280 if (*tls_mask != 0)
10284 /* Support for grouping stub sections. */
10285 id_sec = htab->stub_group[section->id].link_sec;
10287 /* Get the name of this stub. */
10288 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
10290 goto error_ret_free_internal;
10292 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
10293 stub_name, FALSE, FALSE);
10294 if (stub_entry != NULL)
10296 /* The proper stub has already been created. */
10301 stub_entry = ppc_add_stub (stub_name, section, htab);
10302 if (stub_entry == NULL)
10305 error_ret_free_internal:
10306 if (elf_section_data (section)->relocs == NULL)
10307 free (internal_relocs);
10308 error_ret_free_local:
10309 if (local_syms != NULL
10310 && (symtab_hdr->contents
10311 != (unsigned char *) local_syms))
10316 stub_entry->stub_type = stub_type;
10317 if (stub_type != ppc_stub_plt_call)
10319 stub_entry->target_value = code_value;
10320 stub_entry->target_section = code_sec;
10324 stub_entry->target_value = sym_value;
10325 stub_entry->target_section = sym_sec;
10327 stub_entry->h = hash;
10328 stub_entry->plt_ent = plt_ent;
10329 stub_entry->addend = irela->r_addend;
10331 if (stub_entry->h != NULL)
10332 htab->stub_globals += 1;
10335 /* We're done with the internal relocs, free them. */
10336 if (elf_section_data (section)->relocs != internal_relocs)
10337 free (internal_relocs);
10340 if (local_syms != NULL
10341 && symtab_hdr->contents != (unsigned char *) local_syms)
10343 if (!info->keep_memory)
10346 symtab_hdr->contents = (unsigned char *) local_syms;
10350 /* We may have added some stubs. Find out the new size of the
10352 for (stub_sec = htab->stub_bfd->sections;
10354 stub_sec = stub_sec->next)
10355 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
10357 stub_sec->rawsize = stub_sec->size;
10358 stub_sec->size = 0;
10359 stub_sec->reloc_count = 0;
10360 stub_sec->flags &= ~SEC_RELOC;
10363 htab->brlt->size = 0;
10364 htab->brlt->reloc_count = 0;
10365 htab->brlt->flags &= ~SEC_RELOC;
10366 if (htab->relbrlt != NULL)
10367 htab->relbrlt->size = 0;
10369 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
10371 if (info->emitrelocations
10372 && htab->glink != NULL && htab->glink->size != 0)
10374 htab->glink->reloc_count = 1;
10375 htab->glink->flags |= SEC_RELOC;
10378 for (stub_sec = htab->stub_bfd->sections;
10380 stub_sec = stub_sec->next)
10381 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
10382 && stub_sec->rawsize != stub_sec->size)
10385 /* Exit from this loop when no stubs have been added, and no stubs
10386 have changed size. */
10387 if (stub_sec == NULL)
10390 /* Ask the linker to do its stuff. */
10391 (*htab->layout_sections_again) ();
10394 /* It would be nice to strip htab->brlt from the output if the
10395 section is empty, but it's too late. If we strip sections here,
10396 the dynamic symbol table is corrupted since the section symbol
10397 for the stripped section isn't written. */
10402 /* Called after we have determined section placement. If sections
10403 move, we'll be called again. Provide a value for TOCstart. */
10406 ppc64_elf_toc (bfd *obfd)
10411 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
10412 order. The TOC starts where the first of these sections starts. */
10413 s = bfd_get_section_by_name (obfd, ".got");
10414 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10415 s = bfd_get_section_by_name (obfd, ".toc");
10416 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10417 s = bfd_get_section_by_name (obfd, ".tocbss");
10418 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10419 s = bfd_get_section_by_name (obfd, ".plt");
10420 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10422 /* This may happen for
10423 o references to TOC base (SYM@toc / TOC[tc0]) without a
10425 o bad linker script
10426 o --gc-sections and empty TOC sections
10428 FIXME: Warn user? */
10430 /* Look for a likely section. We probably won't even be
10432 for (s = obfd->sections; s != NULL; s = s->next)
10433 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
10435 == (SEC_ALLOC | SEC_SMALL_DATA))
10438 for (s = obfd->sections; s != NULL; s = s->next)
10439 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
10440 == (SEC_ALLOC | SEC_SMALL_DATA))
10443 for (s = obfd->sections; s != NULL; s = s->next)
10444 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
10448 for (s = obfd->sections; s != NULL; s = s->next)
10449 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
10455 TOCstart = s->output_section->vma + s->output_offset;
10460 /* Build all the stubs associated with the current output file.
10461 The stubs are kept in a hash table attached to the main linker
10462 hash table. This function is called via gldelf64ppc_finish. */
10465 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
10466 struct bfd_link_info *info,
10469 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10470 asection *stub_sec;
10472 int stub_sec_count = 0;
10474 htab->emit_stub_syms = emit_stub_syms;
10476 /* Allocate memory to hold the linker stubs. */
10477 for (stub_sec = htab->stub_bfd->sections;
10479 stub_sec = stub_sec->next)
10480 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
10481 && stub_sec->size != 0)
10483 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
10484 if (stub_sec->contents == NULL)
10486 /* We want to check that built size is the same as calculated
10487 size. rawsize is a convenient location to use. */
10488 stub_sec->rawsize = stub_sec->size;
10489 stub_sec->size = 0;
10492 if (htab->glink != NULL && htab->glink->size != 0)
10497 /* Build the .glink plt call stub. */
10498 if (htab->emit_stub_syms)
10500 struct elf_link_hash_entry *h;
10501 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
10502 TRUE, FALSE, FALSE);
10505 if (h->root.type == bfd_link_hash_new)
10507 h->root.type = bfd_link_hash_defined;
10508 h->root.u.def.section = htab->glink;
10509 h->root.u.def.value = 8;
10510 h->ref_regular = 1;
10511 h->def_regular = 1;
10512 h->ref_regular_nonweak = 1;
10513 h->forced_local = 1;
10517 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
10518 if (info->emitrelocations)
10520 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
10523 r->r_offset = (htab->glink->output_offset
10524 + htab->glink->output_section->vma);
10525 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
10526 r->r_addend = plt0;
10528 p = htab->glink->contents;
10529 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
10530 bfd_put_64 (htab->glink->owner, plt0, p);
10532 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
10534 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
10536 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
10538 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
10540 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
10542 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
10544 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
10546 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
10548 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
10550 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
10552 bfd_put_32 (htab->glink->owner, BCTR, p);
10554 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
10556 bfd_put_32 (htab->glink->owner, NOP, p);
10560 /* Build the .glink lazy link call stubs. */
10562 while (p < htab->glink->contents + htab->glink->size)
10566 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
10571 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
10573 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
10576 bfd_put_32 (htab->glink->owner,
10577 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
10581 htab->glink->rawsize = p - htab->glink->contents;
10584 if (htab->brlt->size != 0)
10586 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
10588 if (htab->brlt->contents == NULL)
10591 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
10593 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
10594 htab->relbrlt->size);
10595 if (htab->relbrlt->contents == NULL)
10599 /* Build the stubs as directed by the stub hash table. */
10600 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
10602 if (htab->relbrlt != NULL)
10603 htab->relbrlt->reloc_count = 0;
10605 for (stub_sec = htab->stub_bfd->sections;
10607 stub_sec = stub_sec->next)
10608 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
10610 stub_sec_count += 1;
10611 if (stub_sec->rawsize != stub_sec->size)
10615 if (stub_sec != NULL
10616 || htab->glink->rawsize != htab->glink->size)
10618 htab->stub_error = TRUE;
10619 (*_bfd_error_handler) (_("stubs don't match calculated size"));
10622 if (htab->stub_error)
10627 *stats = bfd_malloc (500);
10628 if (*stats == NULL)
10631 sprintf (*stats, _("linker stubs in %u group%s\n"
10633 " toc adjust %lu\n"
10634 " long branch %lu\n"
10635 " long toc adj %lu\n"
10638 stub_sec_count == 1 ? "" : "s",
10639 htab->stub_count[ppc_stub_long_branch - 1],
10640 htab->stub_count[ppc_stub_long_branch_r2off - 1],
10641 htab->stub_count[ppc_stub_plt_branch - 1],
10642 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
10643 htab->stub_count[ppc_stub_plt_call - 1]);
10648 /* This function undoes the changes made by add_symbol_adjust. */
10651 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10653 struct ppc_link_hash_entry *eh;
10655 if (h->root.type == bfd_link_hash_indirect)
10658 if (h->root.type == bfd_link_hash_warning)
10659 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10661 eh = (struct ppc_link_hash_entry *) h;
10662 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
10665 eh->elf.root.type = bfd_link_hash_undefined;
10670 ppc64_elf_restore_symbols (struct bfd_link_info *info)
10672 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10673 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
10676 /* What to do when ld finds relocations against symbols defined in
10677 discarded sections. */
10679 static unsigned int
10680 ppc64_elf_action_discarded (asection *sec)
10682 if (strcmp (".opd", sec->name) == 0)
10685 if (strcmp (".toc", sec->name) == 0)
10688 if (strcmp (".toc1", sec->name) == 0)
10691 return _bfd_elf_default_action_discarded (sec);
10694 /* The RELOCATE_SECTION function is called by the ELF backend linker
10695 to handle the relocations for a section.
10697 The relocs are always passed as Rela structures; if the section
10698 actually uses Rel structures, the r_addend field will always be
10701 This function is responsible for adjust the section contents as
10702 necessary, and (if using Rela relocs and generating a
10703 relocatable output file) adjusting the reloc addend as
10706 This function does not have to worry about setting the reloc
10707 address or the reloc symbol index.
10709 LOCAL_SYMS is a pointer to the swapped in local symbols.
10711 LOCAL_SECTIONS is an array giving the section in the input file
10712 corresponding to the st_shndx field of each local symbol.
10714 The global hash table entry for the global symbols can be found
10715 via elf_sym_hashes (input_bfd).
10717 When generating relocatable output, this function must handle
10718 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
10719 going to be the section symbol corresponding to the output
10720 section, which means that the addend must be adjusted
10724 ppc64_elf_relocate_section (bfd *output_bfd,
10725 struct bfd_link_info *info,
10727 asection *input_section,
10728 bfd_byte *contents,
10729 Elf_Internal_Rela *relocs,
10730 Elf_Internal_Sym *local_syms,
10731 asection **local_sections)
10733 struct ppc_link_hash_table *htab;
10734 Elf_Internal_Shdr *symtab_hdr;
10735 struct elf_link_hash_entry **sym_hashes;
10736 Elf_Internal_Rela *rel;
10737 Elf_Internal_Rela *relend;
10738 Elf_Internal_Rela outrel;
10740 struct got_entry **local_got_ents;
10742 bfd_boolean ret = TRUE;
10743 bfd_boolean is_opd;
10744 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
10745 bfd_boolean is_power4 = FALSE;
10746 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
10748 /* Initialize howto table if needed. */
10749 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
10752 htab = ppc_hash_table (info);
10754 /* Don't relocate stub sections. */
10755 if (input_section->owner == htab->stub_bfd)
10758 BFD_ASSERT (is_ppc64_elf (input_bfd));
10760 local_got_ents = elf_local_got_ents (input_bfd);
10761 TOCstart = elf_gp (output_bfd);
10762 symtab_hdr = &elf_symtab_hdr (input_bfd);
10763 sym_hashes = elf_sym_hashes (input_bfd);
10764 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
10767 relend = relocs + input_section->reloc_count;
10768 for (; rel < relend; rel++)
10770 enum elf_ppc64_reloc_type r_type;
10771 bfd_vma addend, orig_addend;
10772 bfd_reloc_status_type r;
10773 Elf_Internal_Sym *sym;
10775 struct elf_link_hash_entry *h_elf;
10776 struct ppc_link_hash_entry *h;
10777 struct ppc_link_hash_entry *fdh;
10778 const char *sym_name;
10779 unsigned long r_symndx, toc_symndx;
10780 bfd_vma toc_addend;
10781 char tls_mask, tls_gd, tls_type;
10783 bfd_vma relocation;
10784 bfd_boolean unresolved_reloc;
10785 bfd_boolean warned;
10786 unsigned long insn, mask;
10787 struct ppc_stub_hash_entry *stub_entry;
10788 bfd_vma max_br_offset;
10791 r_type = ELF64_R_TYPE (rel->r_info);
10792 r_symndx = ELF64_R_SYM (rel->r_info);
10794 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
10795 symbol of the previous ADDR64 reloc. The symbol gives us the
10796 proper TOC base to use. */
10797 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
10799 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
10801 r_symndx = ELF64_R_SYM (rel[-1].r_info);
10807 unresolved_reloc = FALSE;
10809 orig_addend = rel->r_addend;
10811 if (r_symndx < symtab_hdr->sh_info)
10813 /* It's a local symbol. */
10814 struct _opd_sec_data *opd;
10816 sym = local_syms + r_symndx;
10817 sec = local_sections[r_symndx];
10818 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
10819 sym_type = ELF64_ST_TYPE (sym->st_info);
10820 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
10821 opd = get_opd_info (sec);
10822 if (opd != NULL && opd->adjust != NULL)
10824 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
10829 /* If this is a relocation against the opd section sym
10830 and we have edited .opd, adjust the reloc addend so
10831 that ld -r and ld --emit-relocs output is correct.
10832 If it is a reloc against some other .opd symbol,
10833 then the symbol value will be adjusted later. */
10834 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
10835 rel->r_addend += adjust;
10837 relocation += adjust;
10843 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
10844 r_symndx, symtab_hdr, sym_hashes,
10845 h_elf, sec, relocation,
10846 unresolved_reloc, warned);
10847 sym_name = h_elf->root.root.string;
10848 sym_type = h_elf->type;
10850 h = (struct ppc_link_hash_entry *) h_elf;
10852 if (sec != NULL && elf_discarded_section (sec))
10854 /* For relocs against symbols from removed linkonce sections,
10855 or sections discarded by a linker script, we just want the
10856 section contents zeroed. Avoid any special processing. */
10857 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
10858 contents + rel->r_offset);
10864 if (info->relocatable)
10867 /* TLS optimizations. Replace instruction sequences and relocs
10868 based on information we collected in tls_optimize. We edit
10869 RELOCS so that --emit-relocs will output something sensible
10870 for the final instruction stream. */
10875 tls_mask = h->tls_mask;
10876 else if (local_got_ents != NULL)
10878 struct plt_entry **local_plt = (struct plt_entry **)
10879 (local_got_ents + symtab_hdr->sh_info);
10880 char *lgot_masks = (char *)
10881 (local_plt + symtab_hdr->sh_info);
10882 tls_mask = lgot_masks[r_symndx];
10885 && (r_type == R_PPC64_TLS
10886 || r_type == R_PPC64_TLSGD
10887 || r_type == R_PPC64_TLSLD))
10889 /* Check for toc tls entries. */
10892 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
10893 &local_syms, rel, input_bfd))
10897 tls_mask = *toc_tls;
10900 /* Check that tls relocs are used with tls syms, and non-tls
10901 relocs are used with non-tls syms. */
10903 && r_type != R_PPC64_NONE
10905 || h->elf.root.type == bfd_link_hash_defined
10906 || h->elf.root.type == bfd_link_hash_defweak)
10907 && (IS_PPC64_TLS_RELOC (r_type)
10908 != (sym_type == STT_TLS
10909 || (sym_type == STT_SECTION
10910 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
10913 && (r_type == R_PPC64_TLS
10914 || r_type == R_PPC64_TLSGD
10915 || r_type == R_PPC64_TLSLD))
10916 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10919 (*_bfd_error_handler)
10920 (!IS_PPC64_TLS_RELOC (r_type)
10921 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10922 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10925 (long) rel->r_offset,
10926 ppc64_elf_howto_table[r_type]->name,
10930 /* Ensure reloc mapping code below stays sane. */
10931 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
10932 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
10933 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
10934 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
10935 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
10936 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
10937 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
10938 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
10939 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
10940 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10948 case R_PPC64_TOC16:
10949 case R_PPC64_TOC16_LO:
10950 case R_PPC64_TOC16_DS:
10951 case R_PPC64_TOC16_LO_DS:
10953 /* Check for toc tls entries. */
10957 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
10958 &local_syms, rel, input_bfd);
10964 tls_mask = *toc_tls;
10965 if (r_type == R_PPC64_TOC16_DS
10966 || r_type == R_PPC64_TOC16_LO_DS)
10969 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10974 /* If we found a GD reloc pair, then we might be
10975 doing a GD->IE transition. */
10978 tls_gd = TLS_TPRELGD;
10979 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10982 else if (retval == 3)
10984 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10992 case R_PPC64_GOT_TPREL16_DS:
10993 case R_PPC64_GOT_TPREL16_LO_DS:
10995 && (tls_mask & TLS_TPREL) == 0)
10998 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11000 insn |= 0x3c0d0000; /* addis 0,13,0 */
11001 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11002 r_type = R_PPC64_TPREL16_HA;
11003 if (toc_symndx != 0)
11005 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11006 rel->r_addend = toc_addend;
11007 /* We changed the symbol. Start over in order to
11008 get h, sym, sec etc. right. */
11013 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11019 && (tls_mask & TLS_TPREL) == 0)
11022 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
11023 if ((insn & ((0x3f << 26) | (31 << 11)))
11024 == ((31 << 26) | (13 << 11)))
11025 rtra = insn & ((1 << 26) - (1 << 16));
11026 else if ((insn & ((0x3f << 26) | (31 << 16)))
11027 == ((31 << 26) | (13 << 16)))
11028 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
11031 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
11034 else if ((insn & (31 << 1)) == 23 << 1
11035 && ((insn & (31 << 6)) < 14 << 6
11036 || ((insn & (31 << 6)) >= 16 << 6
11037 && (insn & (31 << 6)) < 24 << 6)))
11038 /* load and store indexed -> dform. */
11039 insn = (32 | ((insn >> 6) & 31)) << 26;
11040 else if ((insn & (31 << 1)) == 21 << 1
11041 && (insn & (0x1a << 6)) == 0)
11042 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
11043 insn = (((58 | ((insn >> 6) & 4)) << 26)
11044 | ((insn >> 6) & 1));
11045 else if ((insn & (31 << 1)) == 21 << 1
11046 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
11048 insn = (58 << 26) | 2;
11052 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11053 /* Was PPC64_TLS which sits on insn boundary, now
11054 PPC64_TPREL16_LO which is at low-order half-word. */
11055 rel->r_offset += d_offset;
11056 r_type = R_PPC64_TPREL16_LO;
11057 if (toc_symndx != 0)
11059 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11060 rel->r_addend = toc_addend;
11061 /* We changed the symbol. Start over in order to
11062 get h, sym, sec etc. right. */
11067 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11071 case R_PPC64_GOT_TLSGD16_HI:
11072 case R_PPC64_GOT_TLSGD16_HA:
11073 tls_gd = TLS_TPRELGD;
11074 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11078 case R_PPC64_GOT_TLSLD16_HI:
11079 case R_PPC64_GOT_TLSLD16_HA:
11080 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11083 if ((tls_mask & tls_gd) != 0)
11084 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11085 + R_PPC64_GOT_TPREL16_DS);
11088 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11089 rel->r_offset -= d_offset;
11090 r_type = R_PPC64_NONE;
11092 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11096 case R_PPC64_GOT_TLSGD16:
11097 case R_PPC64_GOT_TLSGD16_LO:
11098 tls_gd = TLS_TPRELGD;
11099 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11103 case R_PPC64_GOT_TLSLD16:
11104 case R_PPC64_GOT_TLSLD16_LO:
11105 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11107 unsigned int insn1, insn2, insn3;
11111 offset = (bfd_vma) -1;
11112 /* If not using the newer R_PPC64_TLSGD/LD to mark
11113 __tls_get_addr calls, we must trust that the call
11114 stays with its arg setup insns, ie. that the next
11115 reloc is the __tls_get_addr call associated with
11116 the current reloc. Edit both insns. */
11117 if (input_section->has_tls_get_addr_call
11118 && rel + 1 < relend
11119 && branch_reloc_hash_match (input_bfd, rel + 1,
11120 htab->tls_get_addr,
11121 htab->tls_get_addr_fd))
11122 offset = rel[1].r_offset;
11123 if ((tls_mask & tls_gd) != 0)
11126 insn1 = bfd_get_32 (output_bfd,
11127 contents + rel->r_offset - d_offset);
11128 insn1 &= (1 << 26) - (1 << 2);
11129 insn1 |= 58 << 26; /* ld */
11130 insn2 = 0x7c636a14; /* add 3,3,13 */
11131 if (offset != (bfd_vma) -1)
11132 rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info),
11134 if ((tls_mask & TLS_EXPLICIT) == 0)
11135 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11136 + R_PPC64_GOT_TPREL16_DS);
11138 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
11139 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11144 insn1 = 0x3c6d0000; /* addis 3,13,0 */
11145 insn2 = 0x38630000; /* addi 3,3,0 */
11148 /* Was an LD reloc. */
11150 sec = local_sections[toc_symndx];
11152 r_symndx < symtab_hdr->sh_info;
11154 if (local_sections[r_symndx] == sec)
11156 if (r_symndx >= symtab_hdr->sh_info)
11158 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11160 rel->r_addend -= (local_syms[r_symndx].st_value
11161 + sec->output_offset
11162 + sec->output_section->vma);
11164 else if (toc_symndx != 0)
11166 r_symndx = toc_symndx;
11167 rel->r_addend = toc_addend;
11169 r_type = R_PPC64_TPREL16_HA;
11170 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11171 if (offset != (bfd_vma) -1)
11173 rel[1].r_info = ELF64_R_INFO (r_symndx,
11174 R_PPC64_TPREL16_LO);
11175 rel[1].r_offset = offset + d_offset;
11176 rel[1].r_addend = rel->r_addend;
11179 bfd_put_32 (output_bfd, insn1,
11180 contents + rel->r_offset - d_offset);
11181 if (offset != (bfd_vma) -1)
11183 insn3 = bfd_get_32 (output_bfd,
11184 contents + offset + 4);
11186 || insn3 == CROR_151515 || insn3 == CROR_313131)
11188 rel[1].r_offset += 4;
11189 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11192 bfd_put_32 (output_bfd, insn2, contents + offset);
11194 if ((tls_mask & tls_gd) == 0
11195 && (tls_gd == 0 || toc_symndx != 0))
11197 /* We changed the symbol. Start over in order
11198 to get h, sym, sec etc. right. */
11205 case R_PPC64_TLSGD:
11206 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11208 unsigned int insn2, insn3;
11209 bfd_vma offset = rel->r_offset;
11211 if ((tls_mask & TLS_TPRELGD) != 0)
11214 r_type = R_PPC64_NONE;
11215 insn2 = 0x7c636a14; /* add 3,3,13 */
11220 if (toc_symndx != 0)
11222 r_symndx = toc_symndx;
11223 rel->r_addend = toc_addend;
11225 r_type = R_PPC64_TPREL16_LO;
11226 rel->r_offset = offset + d_offset;
11227 insn2 = 0x38630000; /* addi 3,3,0 */
11229 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11230 /* Zap the reloc on the _tls_get_addr call too. */
11231 BFD_ASSERT (offset == rel[1].r_offset);
11232 rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info),
11234 insn3 = bfd_get_32 (output_bfd,
11235 contents + offset + 4);
11237 || insn3 == CROR_151515 || insn3 == CROR_313131)
11239 rel->r_offset += 4;
11240 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11243 bfd_put_32 (output_bfd, insn2, contents + offset);
11244 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
11252 case R_PPC64_TLSLD:
11253 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11255 unsigned int insn2, insn3;
11256 bfd_vma offset = rel->r_offset;
11259 sec = local_sections[toc_symndx];
11261 r_symndx < symtab_hdr->sh_info;
11263 if (local_sections[r_symndx] == sec)
11265 if (r_symndx >= symtab_hdr->sh_info)
11267 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11269 rel->r_addend -= (local_syms[r_symndx].st_value
11270 + sec->output_offset
11271 + sec->output_section->vma);
11273 r_type = R_PPC64_TPREL16_LO;
11274 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11275 rel->r_offset = offset + d_offset;
11276 /* Zap the reloc on the _tls_get_addr call too. */
11277 BFD_ASSERT (offset == rel[1].r_offset);
11278 rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info),
11280 insn2 = 0x38630000; /* addi 3,3,0 */
11281 insn3 = bfd_get_32 (output_bfd,
11282 contents + offset + 4);
11284 || insn3 == CROR_151515 || insn3 == CROR_313131)
11286 rel->r_offset += 4;
11287 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11290 bfd_put_32 (output_bfd, insn2, contents + offset);
11296 case R_PPC64_DTPMOD64:
11297 if (rel + 1 < relend
11298 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
11299 && rel[1].r_offset == rel->r_offset + 8)
11301 if ((tls_mask & TLS_GD) == 0)
11303 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
11304 if ((tls_mask & TLS_TPRELGD) != 0)
11305 r_type = R_PPC64_TPREL64;
11308 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
11309 r_type = R_PPC64_NONE;
11311 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11316 if ((tls_mask & TLS_LD) == 0)
11318 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
11319 r_type = R_PPC64_NONE;
11320 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11325 case R_PPC64_TPREL64:
11326 if ((tls_mask & TLS_TPREL) == 0)
11328 r_type = R_PPC64_NONE;
11329 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11334 /* Handle other relocations that tweak non-addend part of insn. */
11336 max_br_offset = 1 << 25;
11337 addend = rel->r_addend;
11343 /* Branch taken prediction relocations. */
11344 case R_PPC64_ADDR14_BRTAKEN:
11345 case R_PPC64_REL14_BRTAKEN:
11346 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
11349 /* Branch not taken prediction relocations. */
11350 case R_PPC64_ADDR14_BRNTAKEN:
11351 case R_PPC64_REL14_BRNTAKEN:
11352 insn |= bfd_get_32 (output_bfd,
11353 contents + rel->r_offset) & ~(0x01 << 21);
11356 case R_PPC64_REL14:
11357 max_br_offset = 1 << 15;
11360 case R_PPC64_REL24:
11361 /* Calls to functions with a different TOC, such as calls to
11362 shared objects, need to alter the TOC pointer. This is
11363 done using a linkage stub. A REL24 branching to these
11364 linkage stubs needs to be followed by a nop, as the nop
11365 will be replaced with an instruction to restore the TOC
11371 && h->oh->is_func_descriptor)
11372 fdh = ppc_follow_link (h->oh);
11374 && fdh->elf.plt.plist != NULL)
11376 && sec->output_section != NULL
11377 && sec->id <= htab->top_id
11378 && (htab->stub_group[sec->id].toc_off
11379 != htab->stub_group[input_section->id].toc_off))
11381 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
11382 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
11383 rel, htab)) != NULL
11384 && (stub_entry->stub_type == ppc_stub_plt_call
11385 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
11386 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
11388 bfd_boolean can_plt_call = FALSE;
11390 if (rel->r_offset + 8 <= input_section->size)
11393 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
11395 || nop == CROR_151515 || nop == CROR_313131)
11398 && (h == htab->tls_get_addr_fd
11399 || h == htab->tls_get_addr)
11400 && !htab->no_tls_get_addr_opt)
11402 /* Special stub used, leave nop alone. */
11405 bfd_put_32 (input_bfd, LD_R2_40R1,
11406 contents + rel->r_offset + 4);
11407 can_plt_call = TRUE;
11413 if (stub_entry->stub_type == ppc_stub_plt_call)
11415 /* If this is a plain branch rather than a branch
11416 and link, don't require a nop. However, don't
11417 allow tail calls in a shared library as they
11418 will result in r2 being corrupted. */
11420 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
11421 if (info->executable && (br & 1) == 0)
11422 can_plt_call = TRUE;
11427 && strcmp (h->elf.root.root.string,
11428 ".__libc_start_main") == 0)
11430 /* Allow crt1 branch to go via a toc adjusting stub. */
11431 can_plt_call = TRUE;
11435 if (strcmp (input_section->output_section->name,
11437 || strcmp (input_section->output_section->name,
11439 (*_bfd_error_handler)
11440 (_("%B(%A+0x%lx): automatic multiple TOCs "
11441 "not supported using your crt files; "
11442 "recompile with -mminimal-toc or upgrade gcc"),
11445 (long) rel->r_offset);
11447 (*_bfd_error_handler)
11448 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
11449 "does not allow automatic multiple TOCs; "
11450 "recompile with -mminimal-toc or "
11451 "-fno-optimize-sibling-calls, "
11452 "or make `%s' extern"),
11455 (long) rel->r_offset,
11458 bfd_set_error (bfd_error_bad_value);
11464 && stub_entry->stub_type == ppc_stub_plt_call)
11465 unresolved_reloc = FALSE;
11468 if (stub_entry == NULL
11469 && get_opd_info (sec) != NULL)
11471 /* The branch destination is the value of the opd entry. */
11472 bfd_vma off = (relocation + addend
11473 - sec->output_section->vma
11474 - sec->output_offset);
11475 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
11476 if (dest != (bfd_vma) -1)
11483 /* If the branch is out of reach we ought to have a long
11485 from = (rel->r_offset
11486 + input_section->output_offset
11487 + input_section->output_section->vma);
11489 if (stub_entry == NULL
11490 && (relocation + addend - from + max_br_offset
11491 >= 2 * max_br_offset)
11492 && r_type != R_PPC64_ADDR14_BRTAKEN
11493 && r_type != R_PPC64_ADDR14_BRNTAKEN)
11494 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
11497 if (stub_entry != NULL)
11499 /* Munge up the value and addend so that we call the stub
11500 rather than the procedure directly. */
11501 relocation = (stub_entry->stub_offset
11502 + stub_entry->stub_sec->output_offset
11503 + stub_entry->stub_sec->output_section->vma);
11511 /* Set 'a' bit. This is 0b00010 in BO field for branch
11512 on CR(BI) insns (BO == 001at or 011at), and 0b01000
11513 for branch on CTR insns (BO == 1a00t or 1a01t). */
11514 if ((insn & (0x14 << 21)) == (0x04 << 21))
11515 insn |= 0x02 << 21;
11516 else if ((insn & (0x14 << 21)) == (0x10 << 21))
11517 insn |= 0x08 << 21;
11523 /* Invert 'y' bit if not the default. */
11524 if ((bfd_signed_vma) (relocation + addend - from) < 0)
11525 insn ^= 0x01 << 21;
11528 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11531 /* NOP out calls to undefined weak functions.
11532 We can thus call a weak function without first
11533 checking whether the function is defined. */
11535 && h->elf.root.type == bfd_link_hash_undefweak
11536 && r_type == R_PPC64_REL24
11540 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11546 /* Set `addend'. */
11551 (*_bfd_error_handler)
11552 (_("%B: unknown relocation type %d for symbol %s"),
11553 input_bfd, (int) r_type, sym_name);
11555 bfd_set_error (bfd_error_bad_value);
11561 case R_PPC64_TLSGD:
11562 case R_PPC64_TLSLD:
11563 case R_PPC64_GNU_VTINHERIT:
11564 case R_PPC64_GNU_VTENTRY:
11567 /* GOT16 relocations. Like an ADDR16 using the symbol's
11568 address in the GOT as relocation value instead of the
11569 symbol's value itself. Also, create a GOT entry for the
11570 symbol and put the symbol value there. */
11571 case R_PPC64_GOT_TLSGD16:
11572 case R_PPC64_GOT_TLSGD16_LO:
11573 case R_PPC64_GOT_TLSGD16_HI:
11574 case R_PPC64_GOT_TLSGD16_HA:
11575 tls_type = TLS_TLS | TLS_GD;
11578 case R_PPC64_GOT_TLSLD16:
11579 case R_PPC64_GOT_TLSLD16_LO:
11580 case R_PPC64_GOT_TLSLD16_HI:
11581 case R_PPC64_GOT_TLSLD16_HA:
11582 tls_type = TLS_TLS | TLS_LD;
11585 case R_PPC64_GOT_TPREL16_DS:
11586 case R_PPC64_GOT_TPREL16_LO_DS:
11587 case R_PPC64_GOT_TPREL16_HI:
11588 case R_PPC64_GOT_TPREL16_HA:
11589 tls_type = TLS_TLS | TLS_TPREL;
11592 case R_PPC64_GOT_DTPREL16_DS:
11593 case R_PPC64_GOT_DTPREL16_LO_DS:
11594 case R_PPC64_GOT_DTPREL16_HI:
11595 case R_PPC64_GOT_DTPREL16_HA:
11596 tls_type = TLS_TLS | TLS_DTPREL;
11599 case R_PPC64_GOT16:
11600 case R_PPC64_GOT16_LO:
11601 case R_PPC64_GOT16_HI:
11602 case R_PPC64_GOT16_HA:
11603 case R_PPC64_GOT16_DS:
11604 case R_PPC64_GOT16_LO_DS:
11607 /* Relocation is to the entry for this symbol in the global
11612 unsigned long indx = 0;
11614 if (tls_type == (TLS_TLS | TLS_LD)
11616 || !h->elf.def_dynamic))
11617 offp = &ppc64_tlsld_got (input_bfd)->offset;
11620 struct got_entry *ent;
11624 bfd_boolean dyn = htab->elf.dynamic_sections_created;
11625 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
11628 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
11629 /* This is actually a static link, or it is a
11630 -Bsymbolic link and the symbol is defined
11631 locally, or the symbol was forced to be local
11632 because of a version file. */
11636 indx = h->elf.dynindx;
11637 unresolved_reloc = FALSE;
11639 ent = h->elf.got.glist;
11643 if (local_got_ents == NULL)
11645 ent = local_got_ents[r_symndx];
11648 for (; ent != NULL; ent = ent->next)
11649 if (ent->addend == orig_addend
11650 && ent->owner == input_bfd
11651 && ent->tls_type == tls_type)
11655 offp = &ent->got.offset;
11658 got = ppc64_elf_tdata (input_bfd)->got;
11662 /* The offset must always be a multiple of 8. We use the
11663 least significant bit to record whether we have already
11664 processed this entry. */
11666 if ((off & 1) != 0)
11670 /* Generate relocs for the dynamic linker, except in
11671 the case of TLSLD where we'll use one entry per
11679 ? h->elf.type == STT_GNU_IFUNC
11680 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
11681 if ((info->shared || indx != 0)
11682 && (offp == &ppc64_tlsld_got (input_bfd)->offset
11684 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
11685 || h->elf.root.type != bfd_link_hash_undefweak))
11686 relgot = ppc64_elf_tdata (input_bfd)->relgot;
11688 relgot = htab->reliplt;
11689 if (relgot != NULL)
11691 outrel.r_offset = (got->output_section->vma
11692 + got->output_offset
11694 outrel.r_addend = addend;
11695 if (tls_type & (TLS_LD | TLS_GD))
11697 outrel.r_addend = 0;
11698 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
11699 if (tls_type == (TLS_TLS | TLS_GD))
11701 loc = relgot->contents;
11702 loc += (relgot->reloc_count++
11703 * sizeof (Elf64_External_Rela));
11704 bfd_elf64_swap_reloca_out (output_bfd,
11706 outrel.r_offset += 8;
11707 outrel.r_addend = addend;
11709 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
11712 else if (tls_type == (TLS_TLS | TLS_DTPREL))
11713 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
11714 else if (tls_type == (TLS_TLS | TLS_TPREL))
11715 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
11716 else if (indx != 0)
11717 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
11721 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11723 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11725 /* Write the .got section contents for the sake
11727 loc = got->contents + off;
11728 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
11732 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
11734 outrel.r_addend += relocation;
11735 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
11736 outrel.r_addend -= htab->elf.tls_sec->vma;
11738 loc = relgot->contents;
11739 loc += (relgot->reloc_count++
11740 * sizeof (Elf64_External_Rela));
11741 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11744 /* Init the .got section contents here if we're not
11745 emitting a reloc. */
11748 relocation += addend;
11749 if (tls_type == (TLS_TLS | TLS_LD))
11751 else if (tls_type != 0)
11753 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
11754 if (tls_type == (TLS_TLS | TLS_TPREL))
11755 relocation += DTP_OFFSET - TP_OFFSET;
11757 if (tls_type == (TLS_TLS | TLS_GD))
11759 bfd_put_64 (output_bfd, relocation,
11760 got->contents + off + 8);
11765 bfd_put_64 (output_bfd, relocation,
11766 got->contents + off);
11770 if (off >= (bfd_vma) -2)
11773 relocation = got->output_offset + off;
11775 /* TOC base (r2) is TOC start plus 0x8000. */
11776 addend = -TOC_BASE_OFF;
11780 case R_PPC64_PLT16_HA:
11781 case R_PPC64_PLT16_HI:
11782 case R_PPC64_PLT16_LO:
11783 case R_PPC64_PLT32:
11784 case R_PPC64_PLT64:
11785 /* Relocation is to the entry for this symbol in the
11786 procedure linkage table. */
11788 /* Resolve a PLT reloc against a local symbol directly,
11789 without using the procedure linkage table. */
11793 /* It's possible that we didn't make a PLT entry for this
11794 symbol. This happens when statically linking PIC code,
11795 or when using -Bsymbolic. Go find a match if there is a
11797 if (htab->plt != NULL)
11799 struct plt_entry *ent;
11800 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
11801 if (ent->addend == orig_addend
11802 && ent->plt.offset != (bfd_vma) -1)
11804 relocation = (htab->plt->output_section->vma
11805 + htab->plt->output_offset
11806 + ent->plt.offset);
11807 unresolved_reloc = FALSE;
11813 /* Relocation value is TOC base. */
11814 relocation = TOCstart;
11816 relocation += htab->stub_group[input_section->id].toc_off;
11817 else if (unresolved_reloc)
11819 else if (sec != NULL && sec->id <= htab->top_id)
11820 relocation += htab->stub_group[sec->id].toc_off;
11822 unresolved_reloc = TRUE;
11825 /* TOC16 relocs. We want the offset relative to the TOC base,
11826 which is the address of the start of the TOC plus 0x8000.
11827 The TOC consists of sections .got, .toc, .tocbss, and .plt,
11829 case R_PPC64_TOC16:
11830 case R_PPC64_TOC16_LO:
11831 case R_PPC64_TOC16_HI:
11832 case R_PPC64_TOC16_DS:
11833 case R_PPC64_TOC16_LO_DS:
11834 case R_PPC64_TOC16_HA:
11835 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
11838 /* Relocate against the beginning of the section. */
11839 case R_PPC64_SECTOFF:
11840 case R_PPC64_SECTOFF_LO:
11841 case R_PPC64_SECTOFF_HI:
11842 case R_PPC64_SECTOFF_DS:
11843 case R_PPC64_SECTOFF_LO_DS:
11844 case R_PPC64_SECTOFF_HA:
11846 addend -= sec->output_section->vma;
11849 case R_PPC64_REL16:
11850 case R_PPC64_REL16_LO:
11851 case R_PPC64_REL16_HI:
11852 case R_PPC64_REL16_HA:
11855 case R_PPC64_REL14:
11856 case R_PPC64_REL14_BRNTAKEN:
11857 case R_PPC64_REL14_BRTAKEN:
11858 case R_PPC64_REL24:
11861 case R_PPC64_TPREL16:
11862 case R_PPC64_TPREL16_LO:
11863 case R_PPC64_TPREL16_HI:
11864 case R_PPC64_TPREL16_HA:
11865 case R_PPC64_TPREL16_DS:
11866 case R_PPC64_TPREL16_LO_DS:
11867 case R_PPC64_TPREL16_HIGHER:
11868 case R_PPC64_TPREL16_HIGHERA:
11869 case R_PPC64_TPREL16_HIGHEST:
11870 case R_PPC64_TPREL16_HIGHESTA:
11871 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
11873 /* The TPREL16 relocs shouldn't really be used in shared
11874 libs as they will result in DT_TEXTREL being set, but
11875 support them anyway. */
11879 case R_PPC64_DTPREL16:
11880 case R_PPC64_DTPREL16_LO:
11881 case R_PPC64_DTPREL16_HI:
11882 case R_PPC64_DTPREL16_HA:
11883 case R_PPC64_DTPREL16_DS:
11884 case R_PPC64_DTPREL16_LO_DS:
11885 case R_PPC64_DTPREL16_HIGHER:
11886 case R_PPC64_DTPREL16_HIGHERA:
11887 case R_PPC64_DTPREL16_HIGHEST:
11888 case R_PPC64_DTPREL16_HIGHESTA:
11889 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
11892 case R_PPC64_DTPMOD64:
11897 case R_PPC64_TPREL64:
11898 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
11901 case R_PPC64_DTPREL64:
11902 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
11905 /* Relocations that may need to be propagated if this is a
11907 case R_PPC64_REL30:
11908 case R_PPC64_REL32:
11909 case R_PPC64_REL64:
11910 case R_PPC64_ADDR14:
11911 case R_PPC64_ADDR14_BRNTAKEN:
11912 case R_PPC64_ADDR14_BRTAKEN:
11913 case R_PPC64_ADDR16:
11914 case R_PPC64_ADDR16_DS:
11915 case R_PPC64_ADDR16_HA:
11916 case R_PPC64_ADDR16_HI:
11917 case R_PPC64_ADDR16_HIGHER:
11918 case R_PPC64_ADDR16_HIGHERA:
11919 case R_PPC64_ADDR16_HIGHEST:
11920 case R_PPC64_ADDR16_HIGHESTA:
11921 case R_PPC64_ADDR16_LO:
11922 case R_PPC64_ADDR16_LO_DS:
11923 case R_PPC64_ADDR24:
11924 case R_PPC64_ADDR32:
11925 case R_PPC64_ADDR64:
11926 case R_PPC64_UADDR16:
11927 case R_PPC64_UADDR32:
11928 case R_PPC64_UADDR64:
11930 if ((input_section->flags & SEC_ALLOC) == 0)
11933 if (NO_OPD_RELOCS && is_opd)
11938 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
11939 || h->elf.root.type != bfd_link_hash_undefweak)
11940 && (must_be_dyn_reloc (info, r_type)
11941 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
11942 || (ELIMINATE_COPY_RELOCS
11945 && h->elf.dynindx != -1
11946 && !h->elf.non_got_ref
11947 && !h->elf.def_regular)
11950 ? h->elf.type == STT_GNU_IFUNC
11951 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
11953 Elf_Internal_Rela outrel;
11954 bfd_boolean skip, relocate;
11959 /* When generating a dynamic object, these relocations
11960 are copied into the output file to be resolved at run
11966 out_off = _bfd_elf_section_offset (output_bfd, info,
11967 input_section, rel->r_offset);
11968 if (out_off == (bfd_vma) -1)
11970 else if (out_off == (bfd_vma) -2)
11971 skip = TRUE, relocate = TRUE;
11972 out_off += (input_section->output_section->vma
11973 + input_section->output_offset);
11974 outrel.r_offset = out_off;
11975 outrel.r_addend = rel->r_addend;
11977 /* Optimize unaligned reloc use. */
11978 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
11979 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
11980 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
11981 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
11982 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
11983 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
11984 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
11985 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
11986 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
11989 memset (&outrel, 0, sizeof outrel);
11990 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
11992 && r_type != R_PPC64_TOC)
11993 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
11996 /* This symbol is local, or marked to become local,
11997 or this is an opd section reloc which must point
11998 at a local function. */
11999 outrel.r_addend += relocation;
12000 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
12002 if (is_opd && h != NULL)
12004 /* Lie about opd entries. This case occurs
12005 when building shared libraries and we
12006 reference a function in another shared
12007 lib. The same thing happens for a weak
12008 definition in an application that's
12009 overridden by a strong definition in a
12010 shared lib. (I believe this is a generic
12011 bug in binutils handling of weak syms.)
12012 In these cases we won't use the opd
12013 entry in this lib. */
12014 unresolved_reloc = FALSE;
12017 && r_type == R_PPC64_ADDR64
12019 ? h->elf.type == STT_GNU_IFUNC
12020 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
12021 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12024 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12026 /* We need to relocate .opd contents for ld.so.
12027 Prelink also wants simple and consistent rules
12028 for relocs. This make all RELATIVE relocs have
12029 *r_offset equal to r_addend. */
12038 ? h->elf.type == STT_GNU_IFUNC
12039 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
12041 (*_bfd_error_handler)
12042 (_("%B(%A+0x%lx): relocation %s for indirect "
12043 "function %s unsupported"),
12046 (long) rel->r_offset,
12047 ppc64_elf_howto_table[r_type]->name,
12051 else if (r_symndx == 0 || bfd_is_abs_section (sec))
12053 else if (sec == NULL || sec->owner == NULL)
12055 bfd_set_error (bfd_error_bad_value);
12062 osec = sec->output_section;
12063 indx = elf_section_data (osec)->dynindx;
12067 if ((osec->flags & SEC_READONLY) == 0
12068 && htab->elf.data_index_section != NULL)
12069 osec = htab->elf.data_index_section;
12071 osec = htab->elf.text_index_section;
12072 indx = elf_section_data (osec)->dynindx;
12074 BFD_ASSERT (indx != 0);
12076 /* We are turning this relocation into one
12077 against a section symbol, so subtract out
12078 the output section's address but not the
12079 offset of the input section in the output
12081 outrel.r_addend -= osec->vma;
12084 outrel.r_info = ELF64_R_INFO (indx, r_type);
12088 sreloc = elf_section_data (input_section)->sreloc;
12089 if (!htab->elf.dynamic_sections_created)
12090 sreloc = htab->reliplt;
12091 if (sreloc == NULL)
12094 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
12097 loc = sreloc->contents;
12098 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
12099 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12101 /* If this reloc is against an external symbol, it will
12102 be computed at runtime, so there's no need to do
12103 anything now. However, for the sake of prelink ensure
12104 that the section contents are a known value. */
12107 unresolved_reloc = FALSE;
12108 /* The value chosen here is quite arbitrary as ld.so
12109 ignores section contents except for the special
12110 case of .opd where the contents might be accessed
12111 before relocation. Choose zero, as that won't
12112 cause reloc overflow. */
12115 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12116 to improve backward compatibility with older
12118 if (r_type == R_PPC64_ADDR64)
12119 addend = outrel.r_addend;
12120 /* Adjust pc_relative relocs to have zero in *r_offset. */
12121 else if (ppc64_elf_howto_table[r_type]->pc_relative)
12122 addend = (input_section->output_section->vma
12123 + input_section->output_offset
12130 case R_PPC64_GLOB_DAT:
12131 case R_PPC64_JMP_SLOT:
12132 case R_PPC64_JMP_IREL:
12133 case R_PPC64_RELATIVE:
12134 /* We shouldn't ever see these dynamic relocs in relocatable
12136 /* Fall through. */
12138 case R_PPC64_PLTGOT16:
12139 case R_PPC64_PLTGOT16_DS:
12140 case R_PPC64_PLTGOT16_HA:
12141 case R_PPC64_PLTGOT16_HI:
12142 case R_PPC64_PLTGOT16_LO:
12143 case R_PPC64_PLTGOT16_LO_DS:
12144 case R_PPC64_PLTREL32:
12145 case R_PPC64_PLTREL64:
12146 /* These ones haven't been implemented yet. */
12148 (*_bfd_error_handler)
12149 (_("%B: relocation %s is not supported for symbol %s."),
12151 ppc64_elf_howto_table[r_type]->name, sym_name);
12153 bfd_set_error (bfd_error_invalid_operation);
12158 /* Do any further special processing. */
12164 case R_PPC64_ADDR16_HA:
12165 case R_PPC64_REL16_HA:
12166 case R_PPC64_ADDR16_HIGHERA:
12167 case R_PPC64_ADDR16_HIGHESTA:
12168 case R_PPC64_TOC16_HA:
12169 case R_PPC64_SECTOFF_HA:
12170 case R_PPC64_TPREL16_HA:
12171 case R_PPC64_DTPREL16_HA:
12172 case R_PPC64_TPREL16_HIGHER:
12173 case R_PPC64_TPREL16_HIGHERA:
12174 case R_PPC64_TPREL16_HIGHEST:
12175 case R_PPC64_TPREL16_HIGHESTA:
12176 case R_PPC64_DTPREL16_HIGHER:
12177 case R_PPC64_DTPREL16_HIGHERA:
12178 case R_PPC64_DTPREL16_HIGHEST:
12179 case R_PPC64_DTPREL16_HIGHESTA:
12180 /* It's just possible that this symbol is a weak symbol
12181 that's not actually defined anywhere. In that case,
12182 'sec' would be NULL, and we should leave the symbol
12183 alone (it will be set to zero elsewhere in the link). */
12188 case R_PPC64_GOT16_HA:
12189 case R_PPC64_PLTGOT16_HA:
12190 case R_PPC64_PLT16_HA:
12191 case R_PPC64_GOT_TLSGD16_HA:
12192 case R_PPC64_GOT_TLSLD16_HA:
12193 case R_PPC64_GOT_TPREL16_HA:
12194 case R_PPC64_GOT_DTPREL16_HA:
12195 /* Add 0x10000 if sign bit in 0:15 is set.
12196 Bits 0:15 are not used. */
12200 case R_PPC64_ADDR16_DS:
12201 case R_PPC64_ADDR16_LO_DS:
12202 case R_PPC64_GOT16_DS:
12203 case R_PPC64_GOT16_LO_DS:
12204 case R_PPC64_PLT16_LO_DS:
12205 case R_PPC64_SECTOFF_DS:
12206 case R_PPC64_SECTOFF_LO_DS:
12207 case R_PPC64_TOC16_DS:
12208 case R_PPC64_TOC16_LO_DS:
12209 case R_PPC64_PLTGOT16_DS:
12210 case R_PPC64_PLTGOT16_LO_DS:
12211 case R_PPC64_GOT_TPREL16_DS:
12212 case R_PPC64_GOT_TPREL16_LO_DS:
12213 case R_PPC64_GOT_DTPREL16_DS:
12214 case R_PPC64_GOT_DTPREL16_LO_DS:
12215 case R_PPC64_TPREL16_DS:
12216 case R_PPC64_TPREL16_LO_DS:
12217 case R_PPC64_DTPREL16_DS:
12218 case R_PPC64_DTPREL16_LO_DS:
12219 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
12221 /* If this reloc is against an lq insn, then the value must be
12222 a multiple of 16. This is somewhat of a hack, but the
12223 "correct" way to do this by defining _DQ forms of all the
12224 _DS relocs bloats all reloc switches in this file. It
12225 doesn't seem to make much sense to use any of these relocs
12226 in data, so testing the insn should be safe. */
12227 if ((insn & (0x3f << 26)) == (56u << 26))
12229 if (((relocation + addend) & mask) != 0)
12231 (*_bfd_error_handler)
12232 (_("%B: error: relocation %s not a multiple of %d"),
12234 ppc64_elf_howto_table[r_type]->name,
12236 bfd_set_error (bfd_error_bad_value);
12243 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
12244 because such sections are not SEC_ALLOC and thus ld.so will
12245 not process them. */
12246 if (unresolved_reloc
12247 && !((input_section->flags & SEC_DEBUGGING) != 0
12248 && h->elf.def_dynamic))
12250 (*_bfd_error_handler)
12251 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
12254 (long) rel->r_offset,
12255 ppc64_elf_howto_table[(int) r_type]->name,
12256 h->elf.root.root.string);
12260 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
12268 if (r != bfd_reloc_ok)
12270 if (sym_name == NULL)
12271 sym_name = "(null)";
12272 if (r == bfd_reloc_overflow)
12277 && h->elf.root.type == bfd_link_hash_undefweak
12278 && ppc64_elf_howto_table[r_type]->pc_relative)
12280 /* Assume this is a call protected by other code that
12281 detects the symbol is undefined. If this is the case,
12282 we can safely ignore the overflow. If not, the
12283 program is hosed anyway, and a little warning isn't
12289 if (!((*info->callbacks->reloc_overflow)
12290 (info, (h ? &h->elf.root : NULL), sym_name,
12291 ppc64_elf_howto_table[r_type]->name,
12292 orig_addend, input_bfd, input_section, rel->r_offset)))
12297 (*_bfd_error_handler)
12298 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
12301 (long) rel->r_offset,
12302 ppc64_elf_howto_table[r_type]->name,
12310 /* If we're emitting relocations, then shortly after this function
12311 returns, reloc offsets and addends for this section will be
12312 adjusted. Worse, reloc symbol indices will be for the output
12313 file rather than the input. Save a copy of the relocs for
12314 opd_entry_value. */
12315 if (is_opd && (info->emitrelocations || info->relocatable))
12318 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
12319 rel = bfd_alloc (input_bfd, amt);
12320 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
12321 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
12324 memcpy (rel, relocs, amt);
12329 /* Adjust the value of any local symbols in opd sections. */
12332 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
12333 const char *name ATTRIBUTE_UNUSED,
12334 Elf_Internal_Sym *elfsym,
12335 asection *input_sec,
12336 struct elf_link_hash_entry *h)
12338 struct _opd_sec_data *opd;
12345 opd = get_opd_info (input_sec);
12346 if (opd == NULL || opd->adjust == NULL)
12349 value = elfsym->st_value - input_sec->output_offset;
12350 if (!info->relocatable)
12351 value -= input_sec->output_section->vma;
12353 adjust = opd->adjust[value / 8];
12357 elfsym->st_value += adjust;
12361 /* Finish up dynamic symbol handling. We set the contents of various
12362 dynamic sections here. */
12365 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
12366 struct bfd_link_info *info,
12367 struct elf_link_hash_entry *h,
12368 Elf_Internal_Sym *sym)
12370 struct ppc_link_hash_table *htab;
12371 struct plt_entry *ent;
12372 Elf_Internal_Rela rela;
12375 htab = ppc_hash_table (info);
12377 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
12378 if (ent->plt.offset != (bfd_vma) -1)
12380 /* This symbol has an entry in the procedure linkage
12381 table. Set it up. */
12382 if (!htab->elf.dynamic_sections_created
12383 || h->dynindx == -1)
12385 BFD_ASSERT (h->type == STT_GNU_IFUNC
12387 && (h->root.type == bfd_link_hash_defined
12388 || h->root.type == bfd_link_hash_defweak));
12389 rela.r_offset = (htab->iplt->output_section->vma
12390 + htab->iplt->output_offset
12391 + ent->plt.offset);
12392 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
12393 rela.r_addend = (h->root.u.def.value
12394 + h->root.u.def.section->output_offset
12395 + h->root.u.def.section->output_section->vma
12397 loc = (htab->reliplt->contents
12398 + (htab->reliplt->reloc_count++
12399 * sizeof (Elf64_External_Rela)));
12403 rela.r_offset = (htab->plt->output_section->vma
12404 + htab->plt->output_offset
12405 + ent->plt.offset);
12406 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
12407 rela.r_addend = ent->addend;
12408 loc = (htab->relplt->contents
12409 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
12410 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
12412 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
12417 Elf_Internal_Rela rela;
12420 /* This symbol needs a copy reloc. Set it up. */
12422 if (h->dynindx == -1
12423 || (h->root.type != bfd_link_hash_defined
12424 && h->root.type != bfd_link_hash_defweak)
12425 || htab->relbss == NULL)
12428 rela.r_offset = (h->root.u.def.value
12429 + h->root.u.def.section->output_section->vma
12430 + h->root.u.def.section->output_offset);
12431 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
12433 loc = htab->relbss->contents;
12434 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
12435 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
12438 /* Mark some specially defined symbols as absolute. */
12439 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
12440 sym->st_shndx = SHN_ABS;
12445 /* Used to decide how to sort relocs in an optimal manner for the
12446 dynamic linker, before writing them out. */
12448 static enum elf_reloc_type_class
12449 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
12451 enum elf_ppc64_reloc_type r_type;
12453 r_type = ELF64_R_TYPE (rela->r_info);
12456 case R_PPC64_RELATIVE:
12457 return reloc_class_relative;
12458 case R_PPC64_JMP_SLOT:
12459 return reloc_class_plt;
12461 return reloc_class_copy;
12463 return reloc_class_normal;
12467 /* Finish up the dynamic sections. */
12470 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
12471 struct bfd_link_info *info)
12473 struct ppc_link_hash_table *htab;
12477 htab = ppc_hash_table (info);
12478 dynobj = htab->elf.dynobj;
12479 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
12481 if (htab->elf.dynamic_sections_created)
12483 Elf64_External_Dyn *dyncon, *dynconend;
12485 if (sdyn == NULL || htab->got == NULL)
12488 dyncon = (Elf64_External_Dyn *) sdyn->contents;
12489 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
12490 for (; dyncon < dynconend; dyncon++)
12492 Elf_Internal_Dyn dyn;
12495 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
12502 case DT_PPC64_GLINK:
12504 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
12505 /* We stupidly defined DT_PPC64_GLINK to be the start
12506 of glink rather than the first entry point, which is
12507 what ld.so needs, and now have a bigger stub to
12508 support automatic multiple TOCs. */
12509 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
12513 s = bfd_get_section_by_name (output_bfd, ".opd");
12516 dyn.d_un.d_ptr = s->vma;
12519 case DT_PPC64_OPDSZ:
12520 s = bfd_get_section_by_name (output_bfd, ".opd");
12523 dyn.d_un.d_val = s->size;
12528 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
12533 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
12537 dyn.d_un.d_val = htab->relplt->size;
12541 /* Don't count procedure linkage table relocs in the
12542 overall reloc count. */
12546 dyn.d_un.d_val -= s->size;
12550 /* We may not be using the standard ELF linker script.
12551 If .rela.plt is the first .rela section, we adjust
12552 DT_RELA to not include it. */
12556 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
12558 dyn.d_un.d_ptr += s->size;
12562 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
12566 if (htab->got != NULL && htab->got->size != 0)
12568 /* Fill in the first entry in the global offset table.
12569 We use it to hold the link-time TOCbase. */
12570 bfd_put_64 (output_bfd,
12571 elf_gp (output_bfd) + TOC_BASE_OFF,
12572 htab->got->contents);
12574 /* Set .got entry size. */
12575 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
12578 if (htab->plt != NULL && htab->plt->size != 0)
12580 /* Set .plt entry size. */
12581 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
12585 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
12586 brlt ourselves if emitrelocations. */
12587 if (htab->brlt != NULL
12588 && htab->brlt->reloc_count != 0
12589 && !_bfd_elf_link_output_relocs (output_bfd,
12591 &elf_section_data (htab->brlt)->rel_hdr,
12592 elf_section_data (htab->brlt)->relocs,
12596 if (htab->glink != NULL
12597 && htab->glink->reloc_count != 0
12598 && !_bfd_elf_link_output_relocs (output_bfd,
12600 &elf_section_data (htab->glink)->rel_hdr,
12601 elf_section_data (htab->glink)->relocs,
12605 /* We need to handle writing out multiple GOT sections ourselves,
12606 since we didn't add them to DYNOBJ. We know dynobj is the first
12608 while ((dynobj = dynobj->link_next) != NULL)
12612 if (!is_ppc64_elf (dynobj))
12615 s = ppc64_elf_tdata (dynobj)->got;
12618 && s->output_section != bfd_abs_section_ptr
12619 && !bfd_set_section_contents (output_bfd, s->output_section,
12620 s->contents, s->output_offset,
12623 s = ppc64_elf_tdata (dynobj)->relgot;
12626 && s->output_section != bfd_abs_section_ptr
12627 && !bfd_set_section_contents (output_bfd, s->output_section,
12628 s->contents, s->output_offset,
12636 #include "elf64-target.h"