1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *);
59 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_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 /* Track GOT entries needed for a given symbol. We might need more
2530 than one got entry per symbol. */
2533 struct got_entry *next;
2535 /* The symbol addend that we'll be placing in the GOT. */
2538 /* Unlike other ELF targets, we use separate GOT entries for the same
2539 symbol referenced from different input files. This is to support
2540 automatic multiple TOC/GOT sections, where the TOC base can vary
2541 from one input file to another. After partitioning into TOC groups
2542 we merge entries within the group.
2544 Point to the BFD owning this GOT entry. */
2547 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2548 TLS_TPREL or TLS_DTPREL for tls entries. */
2549 unsigned char tls_type;
2551 /* Non-zero if got.ent points to real entry. */
2552 unsigned char is_indirect;
2554 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2557 bfd_signed_vma refcount;
2559 struct got_entry *ent;
2563 /* The same for PLT. */
2566 struct plt_entry *next;
2572 bfd_signed_vma refcount;
2577 struct ppc64_elf_obj_tdata
2579 struct elf_obj_tdata elf;
2581 /* Shortcuts to dynamic linker sections. */
2585 /* Used during garbage collection. We attach global symbols defined
2586 on removed .opd entries to this section so that the sym is removed. */
2587 asection *deleted_section;
2589 /* TLS local dynamic got entry handling. Support for multiple GOT
2590 sections means we potentially need one of these for each input bfd. */
2591 struct got_entry tlsld_got;
2593 /* A copy of relocs before they are modified for --emit-relocs. */
2594 Elf_Internal_Rela *opd_relocs;
2596 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2597 the reloc to be in the range -32768 to 32767. */
2598 unsigned int has_small_toc_reloc;
2601 #define ppc64_elf_tdata(bfd) \
2602 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2604 #define ppc64_tlsld_got(bfd) \
2605 (&ppc64_elf_tdata (bfd)->tlsld_got)
2607 #define is_ppc64_elf(bfd) \
2608 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2609 && elf_object_id (bfd) == PPC64_ELF_DATA)
2611 /* Override the generic function because we store some extras. */
2614 ppc64_elf_mkobject (bfd *abfd)
2616 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2620 /* Fix bad default arch selected for a 64 bit input bfd when the
2621 default is 32 bit. */
2624 ppc64_elf_object_p (bfd *abfd)
2626 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2628 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2630 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2632 /* Relies on arch after 32 bit default being 64 bit default. */
2633 abfd->arch_info = abfd->arch_info->next;
2634 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2640 /* Support for core dump NOTE sections. */
2643 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2645 size_t offset, size;
2647 if (note->descsz != 504)
2651 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2654 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2660 /* Make a ".reg/999" section. */
2661 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2662 size, note->descpos + offset);
2666 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2668 if (note->descsz != 136)
2671 elf_tdata (abfd)->core_program
2672 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2673 elf_tdata (abfd)->core_command
2674 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2680 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2693 va_start (ap, note_type);
2694 memset (data, 0, 40);
2695 strncpy (data + 40, va_arg (ap, const char *), 16);
2696 strncpy (data + 56, va_arg (ap, const char *), 80);
2698 return elfcore_write_note (abfd, buf, bufsiz,
2699 "CORE", note_type, data, sizeof (data));
2710 va_start (ap, note_type);
2711 memset (data, 0, 112);
2712 pid = va_arg (ap, long);
2713 bfd_put_32 (abfd, pid, data + 32);
2714 cursig = va_arg (ap, int);
2715 bfd_put_16 (abfd, cursig, data + 12);
2716 greg = va_arg (ap, const void *);
2717 memcpy (data + 112, greg, 384);
2718 memset (data + 496, 0, 8);
2720 return elfcore_write_note (abfd, buf, bufsiz,
2721 "CORE", note_type, data, sizeof (data));
2726 /* Merge backend specific data from an object file to the output
2727 object file when linking. */
2730 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2732 /* Check if we have the same endianess. */
2733 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2734 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2735 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2739 if (bfd_big_endian (ibfd))
2740 msg = _("%B: compiled for a big endian system "
2741 "and target is little endian");
2743 msg = _("%B: compiled for a little endian system "
2744 "and target is big endian");
2746 (*_bfd_error_handler) (msg, ibfd);
2748 bfd_set_error (bfd_error_wrong_format);
2755 /* Add extra PPC sections. */
2757 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2759 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2760 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2761 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2762 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2765 { NULL, 0, 0, 0, 0 }
2768 enum _ppc64_sec_type {
2774 struct _ppc64_elf_section_data
2776 struct bfd_elf_section_data elf;
2780 /* An array with one entry for each opd function descriptor. */
2781 struct _opd_sec_data
2783 /* Points to the function code section for local opd entries. */
2784 asection **func_sec;
2786 /* After editing .opd, adjust references to opd local syms. */
2790 /* An array for toc sections, indexed by offset/8. */
2791 struct _toc_sec_data
2793 /* Specifies the relocation symbol index used at a given toc offset. */
2796 /* And the relocation addend. */
2801 enum _ppc64_sec_type sec_type:2;
2803 /* Flag set when small branches are detected. Used to
2804 select suitable defaults for the stub group size. */
2805 unsigned int has_14bit_branch:1;
2808 #define ppc64_elf_section_data(sec) \
2809 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2812 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2814 if (!sec->used_by_bfd)
2816 struct _ppc64_elf_section_data *sdata;
2817 bfd_size_type amt = sizeof (*sdata);
2819 sdata = bfd_zalloc (abfd, amt);
2822 sec->used_by_bfd = sdata;
2825 return _bfd_elf_new_section_hook (abfd, sec);
2828 static struct _opd_sec_data *
2829 get_opd_info (asection * sec)
2832 && ppc64_elf_section_data (sec) != NULL
2833 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2834 return &ppc64_elf_section_data (sec)->u.opd;
2838 /* Parameters for the qsort hook. */
2839 static bfd_boolean synthetic_relocatable;
2841 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2844 compare_symbols (const void *ap, const void *bp)
2846 const asymbol *a = * (const asymbol **) ap;
2847 const asymbol *b = * (const asymbol **) bp;
2849 /* Section symbols first. */
2850 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2852 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2855 /* then .opd symbols. */
2856 if (strcmp (a->section->name, ".opd") == 0
2857 && strcmp (b->section->name, ".opd") != 0)
2859 if (strcmp (a->section->name, ".opd") != 0
2860 && strcmp (b->section->name, ".opd") == 0)
2863 /* then other code symbols. */
2864 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2865 == (SEC_CODE | SEC_ALLOC)
2866 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 != (SEC_CODE | SEC_ALLOC))
2870 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2871 != (SEC_CODE | SEC_ALLOC)
2872 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 == (SEC_CODE | SEC_ALLOC))
2876 if (synthetic_relocatable)
2878 if (a->section->id < b->section->id)
2881 if (a->section->id > b->section->id)
2885 if (a->value + a->section->vma < b->value + b->section->vma)
2888 if (a->value + a->section->vma > b->value + b->section->vma)
2891 /* For syms with the same value, prefer strong dynamic global function
2892 syms over other syms. */
2893 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2896 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2899 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2902 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2905 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2908 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2911 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2914 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2920 /* Search SYMS for a symbol of the given VALUE. */
2923 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2931 mid = (lo + hi) >> 1;
2932 if (syms[mid]->value + syms[mid]->section->vma < value)
2934 else if (syms[mid]->value + syms[mid]->section->vma > value)
2944 mid = (lo + hi) >> 1;
2945 if (syms[mid]->section->id < id)
2947 else if (syms[mid]->section->id > id)
2949 else if (syms[mid]->value < value)
2951 else if (syms[mid]->value > value)
2961 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2963 bfd_vma vma = *(bfd_vma *) ptr;
2964 return ((section->flags & SEC_ALLOC) != 0
2965 && section->vma <= vma
2966 && vma < section->vma + section->size);
2969 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2970 entry syms. Also generate @plt symbols for the glink branch table. */
2973 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2974 long static_count, asymbol **static_syms,
2975 long dyn_count, asymbol **dyn_syms,
2982 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2984 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2989 opd = bfd_get_section_by_name (abfd, ".opd");
2993 symcount = static_count;
2995 symcount += dyn_count;
2999 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3003 if (!relocatable && static_count != 0 && dyn_count != 0)
3005 /* Use both symbol tables. */
3006 memcpy (syms, static_syms, static_count * sizeof (*syms));
3007 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3009 else if (!relocatable && static_count == 0)
3010 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3012 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3014 synthetic_relocatable = relocatable;
3015 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3017 if (!relocatable && symcount > 1)
3020 /* Trim duplicate syms, since we may have merged the normal and
3021 dynamic symbols. Actually, we only care about syms that have
3022 different values, so trim any with the same value. */
3023 for (i = 1, j = 1; i < symcount; ++i)
3024 if (syms[i - 1]->value + syms[i - 1]->section->vma
3025 != syms[i]->value + syms[i]->section->vma)
3026 syms[j++] = syms[i];
3031 if (strcmp (syms[i]->section->name, ".opd") == 0)
3035 for (; i < symcount; ++i)
3036 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3037 != (SEC_CODE | SEC_ALLOC))
3038 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3042 for (; i < symcount; ++i)
3043 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3047 for (; i < symcount; ++i)
3048 if (strcmp (syms[i]->section->name, ".opd") != 0)
3052 for (; i < symcount; ++i)
3053 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3054 != (SEC_CODE | SEC_ALLOC))
3062 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3067 if (opdsymend == secsymend)
3070 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3071 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3075 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3082 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3086 while (r < opd->relocation + relcount
3087 && r->address < syms[i]->value + opd->vma)
3090 if (r == opd->relocation + relcount)
3093 if (r->address != syms[i]->value + opd->vma)
3096 if (r->howto->type != R_PPC64_ADDR64)
3099 sym = *r->sym_ptr_ptr;
3100 if (!sym_exists_at (syms, opdsymend, symcount,
3101 sym->section->id, sym->value + r->addend))
3104 size += sizeof (asymbol);
3105 size += strlen (syms[i]->name) + 2;
3109 s = *ret = bfd_malloc (size);
3116 names = (char *) (s + count);
3118 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3122 while (r < opd->relocation + relcount
3123 && r->address < syms[i]->value + opd->vma)
3126 if (r == opd->relocation + relcount)
3129 if (r->address != syms[i]->value + opd->vma)
3132 if (r->howto->type != R_PPC64_ADDR64)
3135 sym = *r->sym_ptr_ptr;
3136 if (!sym_exists_at (syms, opdsymend, symcount,
3137 sym->section->id, sym->value + r->addend))
3142 s->flags |= BSF_SYNTHETIC;
3143 s->section = sym->section;
3144 s->value = sym->value + r->addend;
3147 len = strlen (syms[i]->name);
3148 memcpy (names, syms[i]->name, len + 1);
3150 /* Have udata.p point back to the original symbol this
3151 synthetic symbol was derived from. */
3152 s->udata.p = syms[i];
3159 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3163 bfd_vma glink_vma = 0, resolv_vma = 0;
3164 asection *dynamic, *glink = NULL, *relplt = NULL;
3167 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3171 free_contents_and_exit:
3179 for (i = secsymend; i < opdsymend; ++i)
3183 /* Ignore bogus symbols. */
3184 if (syms[i]->value > opd->size - 8)
3187 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3188 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3191 size += sizeof (asymbol);
3192 size += strlen (syms[i]->name) + 2;
3196 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3198 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3200 bfd_byte *dynbuf, *extdyn, *extdynend;
3202 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3204 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3205 goto free_contents_and_exit;
3207 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3208 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3211 extdynend = extdyn + dynamic->size;
3212 for (; extdyn < extdynend; extdyn += extdynsize)
3214 Elf_Internal_Dyn dyn;
3215 (*swap_dyn_in) (abfd, extdyn, &dyn);
3217 if (dyn.d_tag == DT_NULL)
3220 if (dyn.d_tag == DT_PPC64_GLINK)
3222 /* The first glink stub starts at offset 32; see comment in
3223 ppc64_elf_finish_dynamic_sections. */
3224 glink_vma = dyn.d_un.d_val + 32;
3225 /* The .glink section usually does not survive the final
3226 link; search for the section (usually .text) where the
3227 glink stubs now reside. */
3228 glink = bfd_sections_find_if (abfd, section_covers_vma,
3239 /* Determine __glink trampoline by reading the relative branch
3240 from the first glink stub. */
3242 if (bfd_get_section_contents (abfd, glink, buf,
3243 glink_vma + 4 - glink->vma, 4))
3245 unsigned int insn = bfd_get_32 (abfd, buf);
3247 if ((insn & ~0x3fffffc) == 0)
3248 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3252 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3254 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3257 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3258 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3259 goto free_contents_and_exit;
3261 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3262 size += plt_count * sizeof (asymbol);
3264 p = relplt->relocation;
3265 for (i = 0; i < plt_count; i++, p++)
3267 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3269 size += sizeof ("+0x") - 1 + 16;
3274 s = *ret = bfd_malloc (size);
3276 goto free_contents_and_exit;
3278 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3280 for (i = secsymend; i < opdsymend; ++i)
3284 if (syms[i]->value > opd->size - 8)
3287 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3288 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3292 asection *sec = abfd->sections;
3299 long mid = (lo + hi) >> 1;
3300 if (syms[mid]->section->vma < ent)
3302 else if (syms[mid]->section->vma > ent)
3306 sec = syms[mid]->section;
3311 if (lo >= hi && lo > codesecsym)
3312 sec = syms[lo - 1]->section;
3314 for (; sec != NULL; sec = sec->next)
3318 if ((sec->flags & SEC_ALLOC) == 0
3319 || (sec->flags & SEC_LOAD) == 0)
3321 if ((sec->flags & SEC_CODE) != 0)
3324 s->flags |= BSF_SYNTHETIC;
3325 s->value = ent - s->section->vma;
3328 len = strlen (syms[i]->name);
3329 memcpy (names, syms[i]->name, len + 1);
3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s->udata.p = syms[i];
3339 if (glink != NULL && relplt != NULL)
3343 /* Add a symbol for the main glink trampoline. */
3344 memset (s, 0, sizeof *s);
3346 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3348 s->value = resolv_vma - glink->vma;
3350 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3351 names += sizeof ("__glink_PLTresolve");
3356 /* FIXME: It would be very much nicer to put sym@plt on the
3357 stub rather than on the glink branch table entry. The
3358 objdump disassembler would then use a sensible symbol
3359 name on plt calls. The difficulty in doing so is
3360 a) finding the stubs, and,
3361 b) matching stubs against plt entries, and,
3362 c) there can be multiple stubs for a given plt entry.
3364 Solving (a) could be done by code scanning, but older
3365 ppc64 binaries used different stubs to current code.
3366 (b) is the tricky one since you need to known the toc
3367 pointer for at least one function that uses a pic stub to
3368 be able to calculate the plt address referenced.
3369 (c) means gdb would need to set multiple breakpoints (or
3370 find the glink branch itself) when setting breakpoints
3371 for pending shared library loads. */
3372 p = relplt->relocation;
3373 for (i = 0; i < plt_count; i++, p++)
3377 *s = **p->sym_ptr_ptr;
3378 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3379 we are defining a symbol, ensure one of them is set. */
3380 if ((s->flags & BSF_LOCAL) == 0)
3381 s->flags |= BSF_GLOBAL;
3382 s->flags |= BSF_SYNTHETIC;
3384 s->value = glink_vma - glink->vma;
3387 len = strlen ((*p->sym_ptr_ptr)->name);
3388 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3392 memcpy (names, "+0x", sizeof ("+0x") - 1);
3393 names += sizeof ("+0x") - 1;
3394 bfd_sprintf_vma (abfd, names, p->addend);
3395 names += strlen (names);
3397 memcpy (names, "@plt", sizeof ("@plt"));
3398 names += sizeof ("@plt");
3413 /* The following functions are specific to the ELF linker, while
3414 functions above are used generally. Those named ppc64_elf_* are
3415 called by the main ELF linker code. They appear in this file more
3416 or less in the order in which they are called. eg.
3417 ppc64_elf_check_relocs is called early in the link process,
3418 ppc64_elf_finish_dynamic_sections is one of the last functions
3421 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3422 functions have both a function code symbol and a function descriptor
3423 symbol. A call to foo in a relocatable object file looks like:
3430 The function definition in another object file might be:
3434 . .quad .TOC.@tocbase
3440 When the linker resolves the call during a static link, the branch
3441 unsurprisingly just goes to .foo and the .opd information is unused.
3442 If the function definition is in a shared library, things are a little
3443 different: The call goes via a plt call stub, the opd information gets
3444 copied to the plt, and the linker patches the nop.
3452 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3453 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3454 . std 2,40(1) # this is the general idea
3462 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3464 The "reloc ()" notation is supposed to indicate that the linker emits
3465 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3468 What are the difficulties here? Well, firstly, the relocations
3469 examined by the linker in check_relocs are against the function code
3470 sym .foo, while the dynamic relocation in the plt is emitted against
3471 the function descriptor symbol, foo. Somewhere along the line, we need
3472 to carefully copy dynamic link information from one symbol to the other.
3473 Secondly, the generic part of the elf linker will make .foo a dynamic
3474 symbol as is normal for most other backends. We need foo dynamic
3475 instead, at least for an application final link. However, when
3476 creating a shared library containing foo, we need to have both symbols
3477 dynamic so that references to .foo are satisfied during the early
3478 stages of linking. Otherwise the linker might decide to pull in a
3479 definition from some other object, eg. a static library.
3481 Update: As of August 2004, we support a new convention. Function
3482 calls may use the function descriptor symbol, ie. "bl foo". This
3483 behaves exactly as "bl .foo". */
3485 /* The linker needs to keep track of the number of relocs that it
3486 decides to copy as dynamic relocs in check_relocs for each symbol.
3487 This is so that it can later discard them if they are found to be
3488 unnecessary. We store the information in a field extending the
3489 regular ELF linker hash table. */
3491 struct ppc_dyn_relocs
3493 struct ppc_dyn_relocs *next;
3495 /* The input section of the reloc. */
3498 /* Total number of relocs copied for the input section. */
3499 bfd_size_type count;
3501 /* Number of pc-relative relocs copied for the input section. */
3502 bfd_size_type pc_count;
3505 /* Of those relocs that might be copied as dynamic relocs, this function
3506 selects those that must be copied when linking a shared library,
3507 even when the symbol is local. */
3510 must_be_dyn_reloc (struct bfd_link_info *info,
3511 enum elf_ppc64_reloc_type r_type)
3523 case R_PPC64_TPREL16:
3524 case R_PPC64_TPREL16_LO:
3525 case R_PPC64_TPREL16_HI:
3526 case R_PPC64_TPREL16_HA:
3527 case R_PPC64_TPREL16_DS:
3528 case R_PPC64_TPREL16_LO_DS:
3529 case R_PPC64_TPREL16_HIGHER:
3530 case R_PPC64_TPREL16_HIGHERA:
3531 case R_PPC64_TPREL16_HIGHEST:
3532 case R_PPC64_TPREL16_HIGHESTA:
3533 case R_PPC64_TPREL64:
3534 return !info->executable;
3538 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3539 copying dynamic variables from a shared lib into an app's dynbss
3540 section, and instead use a dynamic relocation to point into the
3541 shared lib. With code that gcc generates, it's vital that this be
3542 enabled; In the PowerPC64 ABI, the address of a function is actually
3543 the address of a function descriptor, which resides in the .opd
3544 section. gcc uses the descriptor directly rather than going via the
3545 GOT as some other ABI's do, which means that initialized function
3546 pointers must reference the descriptor. Thus, a function pointer
3547 initialized to the address of a function in a shared library will
3548 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3549 redefines the function descriptor symbol to point to the copy. This
3550 presents a problem as a plt entry for that function is also
3551 initialized from the function descriptor symbol and the copy reloc
3552 may not be initialized first. */
3553 #define ELIMINATE_COPY_RELOCS 1
3555 /* Section name for stubs is the associated section name plus this
3557 #define STUB_SUFFIX ".stub"
3560 ppc_stub_long_branch:
3561 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3562 destination, but a 24 bit branch in a stub section will reach.
3565 ppc_stub_plt_branch:
3566 Similar to the above, but a 24 bit branch in the stub section won't
3567 reach its destination.
3568 . addis %r12,%r2,xxx@toc@ha
3569 . ld %r11,xxx@toc@l(%r12)
3574 Used to call a function in a shared library. If it so happens that
3575 the plt entry referenced crosses a 64k boundary, then an extra
3576 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3577 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx+0@toc@l(%r12)
3581 . ld %r2,xxx+8@toc@l(%r12)
3582 . ld %r11,xxx+16@toc@l(%r12)
3585 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3586 code to adjust the value and save r2 to support multiple toc sections.
3587 A ppc_stub_long_branch with an r2 offset looks like:
3589 . addis %r2,%r2,off@ha
3590 . addi %r2,%r2,off@l
3593 A ppc_stub_plt_branch with an r2 offset looks like:
3595 . addis %r12,%r2,xxx@toc@ha
3596 . ld %r11,xxx@toc@l(%r12)
3597 . addis %r2,%r2,off@ha
3598 . addi %r2,%r2,off@l
3602 In cases where the "addis" instruction would add zero, the "addis" is
3603 omitted and following instructions modified slightly in some cases.
3606 enum ppc_stub_type {
3608 ppc_stub_long_branch,
3609 ppc_stub_long_branch_r2off,
3610 ppc_stub_plt_branch,
3611 ppc_stub_plt_branch_r2off,
3615 struct ppc_stub_hash_entry {
3617 /* Base hash table entry structure. */
3618 struct bfd_hash_entry root;
3620 enum ppc_stub_type stub_type;
3622 /* The stub section. */
3625 /* Offset within stub_sec of the beginning of this stub. */
3626 bfd_vma stub_offset;
3628 /* Given the symbol's value and its section we can determine its final
3629 value when building the stubs (so the stub knows where to jump. */
3630 bfd_vma target_value;
3631 asection *target_section;
3633 /* The symbol table entry, if any, that this was derived from. */
3634 struct ppc_link_hash_entry *h;
3635 struct plt_entry *plt_ent;
3637 /* And the reloc addend that this was derived from. */
3640 /* Where this stub is being called from, or, in the case of combined
3641 stub sections, the first input section in the group. */
3645 struct ppc_branch_hash_entry {
3647 /* Base hash table entry structure. */
3648 struct bfd_hash_entry root;
3650 /* Offset within branch lookup table. */
3651 unsigned int offset;
3653 /* Generation marker. */
3657 struct ppc_link_hash_entry
3659 struct elf_link_hash_entry elf;
3662 /* A pointer to the most recently used stub hash entry against this
3664 struct ppc_stub_hash_entry *stub_cache;
3666 /* A pointer to the next symbol starting with a '.' */
3667 struct ppc_link_hash_entry *next_dot_sym;
3670 /* Track dynamic relocs copied for this symbol. */
3671 struct ppc_dyn_relocs *dyn_relocs;
3673 /* Link between function code and descriptor symbols. */
3674 struct ppc_link_hash_entry *oh;
3676 /* Flag function code and descriptor symbols. */
3677 unsigned int is_func:1;
3678 unsigned int is_func_descriptor:1;
3679 unsigned int fake:1;
3681 /* Whether global opd/toc sym has been adjusted or not.
3682 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3683 should be set for all globals defined in any opd/toc section. */
3684 unsigned int adjust_done:1;
3686 /* Set if we twiddled this symbol to weak at some stage. */
3687 unsigned int was_undefined:1;
3689 /* Contexts in which symbol is used in the GOT (or TOC).
3690 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3691 corresponding relocs are encountered during check_relocs.
3692 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3693 indicate the corresponding GOT entry type is not needed.
3694 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3695 a TPREL one. We use a separate flag rather than setting TPREL
3696 just for convenience in distinguishing the two cases. */
3697 #define TLS_GD 1 /* GD reloc. */
3698 #define TLS_LD 2 /* LD reloc. */
3699 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3700 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3701 #define TLS_TLS 16 /* Any TLS reloc. */
3702 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3703 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3704 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3705 unsigned char tls_mask;
3708 /* ppc64 ELF linker hash table. */
3710 struct ppc_link_hash_table
3712 struct elf_link_hash_table elf;
3714 /* The stub hash table. */
3715 struct bfd_hash_table stub_hash_table;
3717 /* Another hash table for plt_branch stubs. */
3718 struct bfd_hash_table branch_hash_table;
3720 /* Linker stub bfd. */
3723 /* Linker call-backs. */
3724 asection * (*add_stub_section) (const char *, asection *);
3725 void (*layout_sections_again) (void);
3727 /* Array to keep track of which stub sections have been created, and
3728 information on stub grouping. */
3730 /* This is the section to which stubs in the group will be attached. */
3732 /* The stub section. */
3734 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3738 /* Temp used when calculating TOC pointers. */
3741 asection *toc_first_sec;
3743 /* Highest input section id. */
3746 /* Highest output section index. */
3749 /* Used when adding symbols. */
3750 struct ppc_link_hash_entry *dot_syms;
3752 /* List of input sections for each output section. */
3753 asection **input_list;
3755 /* Short-cuts to get to dynamic linker sections. */
3768 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3769 struct ppc_link_hash_entry *tls_get_addr;
3770 struct ppc_link_hash_entry *tls_get_addr_fd;
3772 /* The size of reliplt used by got entry relocs. */
3773 bfd_size_type got_reli_size;
3776 unsigned long stub_count[ppc_stub_plt_call];
3778 /* Number of stubs against global syms. */
3779 unsigned long stub_globals;
3781 /* Set if we should emit symbols for stubs. */
3782 unsigned int emit_stub_syms:1;
3784 /* Set if __tls_get_addr optimization should not be done. */
3785 unsigned int no_tls_get_addr_opt:1;
3787 /* Support for multiple toc sections. */
3788 unsigned int do_multi_toc:1;
3789 unsigned int multi_toc_needed:1;
3790 unsigned int second_toc_pass:1;
3791 unsigned int do_toc_opt:1;
3794 unsigned int stub_error:1;
3796 /* Temp used by ppc64_elf_process_dot_syms. */
3797 unsigned int twiddled_syms:1;
3799 /* Incremented every time we size stubs. */
3800 unsigned int stub_iteration;
3802 /* Small local sym cache. */
3803 struct sym_cache sym_cache;
3806 /* Rename some of the generic section flags to better document how they
3809 /* Nonzero if this section has TLS related relocations. */
3810 #define has_tls_reloc sec_flg0
3812 /* Nonzero if this section has a call to __tls_get_addr. */
3813 #define has_tls_get_addr_call sec_flg1
3815 /* Nonzero if this section has any toc or got relocs. */
3816 #define has_toc_reloc sec_flg2
3818 /* Nonzero if this section has a call to another section that uses
3820 #define makes_toc_func_call sec_flg3
3822 /* Recursion protection when determining above flag. */
3823 #define call_check_in_progress sec_flg4
3824 #define call_check_done sec_flg5
3826 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3828 #define ppc_hash_table(p) \
3829 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3830 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3832 #define ppc_stub_hash_lookup(table, string, create, copy) \
3833 ((struct ppc_stub_hash_entry *) \
3834 bfd_hash_lookup ((table), (string), (create), (copy)))
3836 #define ppc_branch_hash_lookup(table, string, create, copy) \
3837 ((struct ppc_branch_hash_entry *) \
3838 bfd_hash_lookup ((table), (string), (create), (copy)))
3840 /* Create an entry in the stub hash table. */
3842 static struct bfd_hash_entry *
3843 stub_hash_newfunc (struct bfd_hash_entry *entry,
3844 struct bfd_hash_table *table,
3847 /* Allocate the structure if it has not already been allocated by a
3851 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3856 /* Call the allocation method of the superclass. */
3857 entry = bfd_hash_newfunc (entry, table, string);
3860 struct ppc_stub_hash_entry *eh;
3862 /* Initialize the local fields. */
3863 eh = (struct ppc_stub_hash_entry *) entry;
3864 eh->stub_type = ppc_stub_none;
3865 eh->stub_sec = NULL;
3866 eh->stub_offset = 0;
3867 eh->target_value = 0;
3868 eh->target_section = NULL;
3876 /* Create an entry in the branch hash table. */
3878 static struct bfd_hash_entry *
3879 branch_hash_newfunc (struct bfd_hash_entry *entry,
3880 struct bfd_hash_table *table,
3883 /* Allocate the structure if it has not already been allocated by a
3887 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3892 /* Call the allocation method of the superclass. */
3893 entry = bfd_hash_newfunc (entry, table, string);
3896 struct ppc_branch_hash_entry *eh;
3898 /* Initialize the local fields. */
3899 eh = (struct ppc_branch_hash_entry *) entry;
3907 /* Create an entry in a ppc64 ELF linker hash table. */
3909 static struct bfd_hash_entry *
3910 link_hash_newfunc (struct bfd_hash_entry *entry,
3911 struct bfd_hash_table *table,
3914 /* Allocate the structure if it has not already been allocated by a
3918 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3923 /* Call the allocation method of the superclass. */
3924 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3927 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3929 memset (&eh->u.stub_cache, 0,
3930 (sizeof (struct ppc_link_hash_entry)
3931 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3933 /* When making function calls, old ABI code references function entry
3934 points (dot symbols), while new ABI code references the function
3935 descriptor symbol. We need to make any combination of reference and
3936 definition work together, without breaking archive linking.
3938 For a defined function "foo" and an undefined call to "bar":
3939 An old object defines "foo" and ".foo", references ".bar" (possibly
3941 A new object defines "foo" and references "bar".
3943 A new object thus has no problem with its undefined symbols being
3944 satisfied by definitions in an old object. On the other hand, the
3945 old object won't have ".bar" satisfied by a new object.
3947 Keep a list of newly added dot-symbols. */
3949 if (string[0] == '.')
3951 struct ppc_link_hash_table *htab;
3953 htab = (struct ppc_link_hash_table *) table;
3954 eh->u.next_dot_sym = htab->dot_syms;
3955 htab->dot_syms = eh;
3962 /* Create a ppc64 ELF linker hash table. */
3964 static struct bfd_link_hash_table *
3965 ppc64_elf_link_hash_table_create (bfd *abfd)
3967 struct ppc_link_hash_table *htab;
3968 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3970 htab = bfd_zmalloc (amt);
3974 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3975 sizeof (struct ppc_link_hash_entry),
3982 /* Init the stub hash table too. */
3983 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3984 sizeof (struct ppc_stub_hash_entry)))
3987 /* And the branch hash table. */
3988 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3989 sizeof (struct ppc_branch_hash_entry)))
3992 /* Initializing two fields of the union is just cosmetic. We really
3993 only care about glist, but when compiled on a 32-bit host the
3994 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3995 debugger inspection of these fields look nicer. */
3996 htab->elf.init_got_refcount.refcount = 0;
3997 htab->elf.init_got_refcount.glist = NULL;
3998 htab->elf.init_plt_refcount.refcount = 0;
3999 htab->elf.init_plt_refcount.glist = NULL;
4000 htab->elf.init_got_offset.offset = 0;
4001 htab->elf.init_got_offset.glist = NULL;
4002 htab->elf.init_plt_offset.offset = 0;
4003 htab->elf.init_plt_offset.glist = NULL;
4005 return &htab->elf.root;
4008 /* Free the derived linker hash table. */
4011 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4013 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
4015 bfd_hash_table_free (&ret->stub_hash_table);
4016 bfd_hash_table_free (&ret->branch_hash_table);
4017 _bfd_generic_link_hash_table_free (hash);
4020 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4023 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4025 struct ppc_link_hash_table *htab;
4027 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4029 /* Always hook our dynamic sections into the first bfd, which is the
4030 linker created stub bfd. This ensures that the GOT header is at
4031 the start of the output TOC section. */
4032 htab = ppc_hash_table (info);
4035 htab->stub_bfd = abfd;
4036 htab->elf.dynobj = abfd;
4039 /* Build a name for an entry in the stub hash table. */
4042 ppc_stub_name (const asection *input_section,
4043 const asection *sym_sec,
4044 const struct ppc_link_hash_entry *h,
4045 const Elf_Internal_Rela *rel)
4050 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4051 offsets from a sym as a branch target? In fact, we could
4052 probably assume the addend is always zero. */
4053 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4057 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4058 stub_name = bfd_malloc (len);
4059 if (stub_name == NULL)
4062 sprintf (stub_name, "%08x.%s+%x",
4063 input_section->id & 0xffffffff,
4064 h->elf.root.root.string,
4065 (int) rel->r_addend & 0xffffffff);
4069 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4070 stub_name = bfd_malloc (len);
4071 if (stub_name == NULL)
4074 sprintf (stub_name, "%08x.%x:%x+%x",
4075 input_section->id & 0xffffffff,
4076 sym_sec->id & 0xffffffff,
4077 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4078 (int) rel->r_addend & 0xffffffff);
4080 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4081 stub_name[len - 2] = 0;
4085 /* Look up an entry in the stub hash. Stub entries are cached because
4086 creating the stub name takes a bit of time. */
4088 static struct ppc_stub_hash_entry *
4089 ppc_get_stub_entry (const asection *input_section,
4090 const asection *sym_sec,
4091 struct ppc_link_hash_entry *h,
4092 const Elf_Internal_Rela *rel,
4093 struct ppc_link_hash_table *htab)
4095 struct ppc_stub_hash_entry *stub_entry;
4096 const asection *id_sec;
4098 /* If this input section is part of a group of sections sharing one
4099 stub section, then use the id of the first section in the group.
4100 Stub names need to include a section id, as there may well be
4101 more than one stub used to reach say, printf, and we need to
4102 distinguish between them. */
4103 id_sec = htab->stub_group[input_section->id].link_sec;
4105 if (h != NULL && h->u.stub_cache != NULL
4106 && h->u.stub_cache->h == h
4107 && h->u.stub_cache->id_sec == id_sec)
4109 stub_entry = h->u.stub_cache;
4115 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4116 if (stub_name == NULL)
4119 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4120 stub_name, FALSE, FALSE);
4122 h->u.stub_cache = stub_entry;
4130 /* Add a new stub entry to the stub hash. Not all fields of the new
4131 stub entry are initialised. */
4133 static struct ppc_stub_hash_entry *
4134 ppc_add_stub (const char *stub_name,
4136 struct ppc_link_hash_table *htab)
4140 struct ppc_stub_hash_entry *stub_entry;
4142 link_sec = htab->stub_group[section->id].link_sec;
4143 stub_sec = htab->stub_group[section->id].stub_sec;
4144 if (stub_sec == NULL)
4146 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4147 if (stub_sec == NULL)
4153 namelen = strlen (link_sec->name);
4154 len = namelen + sizeof (STUB_SUFFIX);
4155 s_name = bfd_alloc (htab->stub_bfd, len);
4159 memcpy (s_name, link_sec->name, namelen);
4160 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4161 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4162 if (stub_sec == NULL)
4164 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4166 htab->stub_group[section->id].stub_sec = stub_sec;
4169 /* Enter this entry into the linker stub hash table. */
4170 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4172 if (stub_entry == NULL)
4174 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
4175 section->owner, stub_name);
4179 stub_entry->stub_sec = stub_sec;
4180 stub_entry->stub_offset = 0;
4181 stub_entry->id_sec = link_sec;
4185 /* Create sections for linker generated code. */
4188 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4190 struct ppc_link_hash_table *htab;
4193 htab = ppc_hash_table (info);
4197 /* Create .sfpr for code to save and restore fp regs. */
4198 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4199 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4200 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4202 if (htab->sfpr == NULL
4203 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4206 /* Create .glink for lazy dynamic linking support. */
4207 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4209 if (htab->glink == NULL
4210 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4213 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4214 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4215 if (htab->iplt == NULL
4216 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4219 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4220 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4221 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4224 if (htab->reliplt == NULL
4225 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4228 /* Create branch lookup table for plt_branch stubs. */
4229 flags = (SEC_ALLOC | SEC_LOAD
4230 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4231 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4233 if (htab->brlt == NULL
4234 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4240 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4241 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4242 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4245 if (htab->relbrlt == NULL
4246 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4252 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4253 not already done. */
4256 create_got_section (bfd *abfd, struct bfd_link_info *info)
4258 asection *got, *relgot;
4260 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4262 if (!is_ppc64_elf (abfd))
4269 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4272 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4277 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4278 | SEC_LINKER_CREATED);
4280 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4282 || !bfd_set_section_alignment (abfd, got, 3))
4285 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4286 flags | SEC_READONLY);
4288 || ! bfd_set_section_alignment (abfd, relgot, 3))
4291 ppc64_elf_tdata (abfd)->got = got;
4292 ppc64_elf_tdata (abfd)->relgot = relgot;
4296 /* Create the dynamic sections, and set up shortcuts. */
4299 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4301 struct ppc_link_hash_table *htab;
4303 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4306 htab = ppc_hash_table (info);
4311 htab->got = bfd_get_section_by_name (dynobj, ".got");
4312 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4313 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4314 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
4316 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
4318 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4319 || (!info->shared && !htab->relbss))
4325 /* Follow indirect and warning symbol links. */
4327 static inline struct bfd_link_hash_entry *
4328 follow_link (struct bfd_link_hash_entry *h)
4330 while (h->type == bfd_link_hash_indirect
4331 || h->type == bfd_link_hash_warning)
4336 static inline struct elf_link_hash_entry *
4337 elf_follow_link (struct elf_link_hash_entry *h)
4339 return (struct elf_link_hash_entry *) follow_link (&h->root);
4342 static inline struct ppc_link_hash_entry *
4343 ppc_follow_link (struct ppc_link_hash_entry *h)
4345 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4348 /* Merge PLT info on FROM with that on TO. */
4351 move_plt_plist (struct ppc_link_hash_entry *from,
4352 struct ppc_link_hash_entry *to)
4354 if (from->elf.plt.plist != NULL)
4356 if (to->elf.plt.plist != NULL)
4358 struct plt_entry **entp;
4359 struct plt_entry *ent;
4361 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4363 struct plt_entry *dent;
4365 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4366 if (dent->addend == ent->addend)
4368 dent->plt.refcount += ent->plt.refcount;
4375 *entp = to->elf.plt.plist;
4378 to->elf.plt.plist = from->elf.plt.plist;
4379 from->elf.plt.plist = NULL;
4383 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4386 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4387 struct elf_link_hash_entry *dir,
4388 struct elf_link_hash_entry *ind)
4390 struct ppc_link_hash_entry *edir, *eind;
4392 edir = (struct ppc_link_hash_entry *) dir;
4393 eind = (struct ppc_link_hash_entry *) ind;
4395 /* Copy over any dynamic relocs we may have on the indirect sym. */
4396 if (eind->dyn_relocs != NULL)
4398 if (edir->dyn_relocs != NULL)
4400 struct ppc_dyn_relocs **pp;
4401 struct ppc_dyn_relocs *p;
4403 /* Add reloc counts against the indirect sym to the direct sym
4404 list. Merge any entries against the same section. */
4405 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4407 struct ppc_dyn_relocs *q;
4409 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4410 if (q->sec == p->sec)
4412 q->pc_count += p->pc_count;
4413 q->count += p->count;
4420 *pp = edir->dyn_relocs;
4423 edir->dyn_relocs = eind->dyn_relocs;
4424 eind->dyn_relocs = NULL;
4427 edir->is_func |= eind->is_func;
4428 edir->is_func_descriptor |= eind->is_func_descriptor;
4429 edir->tls_mask |= eind->tls_mask;
4430 if (eind->oh != NULL)
4431 edir->oh = ppc_follow_link (eind->oh);
4433 /* If called to transfer flags for a weakdef during processing
4434 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4435 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4436 if (!(ELIMINATE_COPY_RELOCS
4437 && eind->elf.root.type != bfd_link_hash_indirect
4438 && edir->elf.dynamic_adjusted))
4439 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4441 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4442 edir->elf.ref_regular |= eind->elf.ref_regular;
4443 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4444 edir->elf.needs_plt |= eind->elf.needs_plt;
4446 /* If we were called to copy over info for a weak sym, that's all. */
4447 if (eind->elf.root.type != bfd_link_hash_indirect)
4450 /* Copy over got entries that we may have already seen to the
4451 symbol which just became indirect. */
4452 if (eind->elf.got.glist != NULL)
4454 if (edir->elf.got.glist != NULL)
4456 struct got_entry **entp;
4457 struct got_entry *ent;
4459 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4461 struct got_entry *dent;
4463 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4464 if (dent->addend == ent->addend
4465 && dent->owner == ent->owner
4466 && dent->tls_type == ent->tls_type)
4468 dent->got.refcount += ent->got.refcount;
4475 *entp = edir->elf.got.glist;
4478 edir->elf.got.glist = eind->elf.got.glist;
4479 eind->elf.got.glist = NULL;
4482 /* And plt entries. */
4483 move_plt_plist (eind, edir);
4485 if (eind->elf.dynindx != -1)
4487 if (edir->elf.dynindx != -1)
4488 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4489 edir->elf.dynstr_index);
4490 edir->elf.dynindx = eind->elf.dynindx;
4491 edir->elf.dynstr_index = eind->elf.dynstr_index;
4492 eind->elf.dynindx = -1;
4493 eind->elf.dynstr_index = 0;
4497 /* Find the function descriptor hash entry from the given function code
4498 hash entry FH. Link the entries via their OH fields. */
4500 static struct ppc_link_hash_entry *
4501 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4503 struct ppc_link_hash_entry *fdh = fh->oh;
4507 const char *fd_name = fh->elf.root.root.string + 1;
4509 fdh = (struct ppc_link_hash_entry *)
4510 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4514 fdh->is_func_descriptor = 1;
4520 return ppc_follow_link (fdh);
4523 /* Make a fake function descriptor sym for the code sym FH. */
4525 static struct ppc_link_hash_entry *
4526 make_fdh (struct bfd_link_info *info,
4527 struct ppc_link_hash_entry *fh)
4531 struct bfd_link_hash_entry *bh;
4532 struct ppc_link_hash_entry *fdh;
4534 abfd = fh->elf.root.u.undef.abfd;
4535 newsym = bfd_make_empty_symbol (abfd);
4536 newsym->name = fh->elf.root.root.string + 1;
4537 newsym->section = bfd_und_section_ptr;
4539 newsym->flags = BSF_WEAK;
4542 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4543 newsym->flags, newsym->section,
4544 newsym->value, NULL, FALSE, FALSE,
4548 fdh = (struct ppc_link_hash_entry *) bh;
4549 fdh->elf.non_elf = 0;
4551 fdh->is_func_descriptor = 1;
4558 /* Fix function descriptor symbols defined in .opd sections to be
4562 ppc64_elf_add_symbol_hook (bfd *ibfd,
4563 struct bfd_link_info *info,
4564 Elf_Internal_Sym *isym,
4565 const char **name ATTRIBUTE_UNUSED,
4566 flagword *flags ATTRIBUTE_UNUSED,
4568 bfd_vma *value ATTRIBUTE_UNUSED)
4570 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4572 if ((ibfd->flags & DYNAMIC) == 0)
4573 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4575 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4577 else if (*sec != NULL
4578 && strcmp ((*sec)->name, ".opd") == 0)
4579 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4584 /* This function makes an old ABI object reference to ".bar" cause the
4585 inclusion of a new ABI object archive that defines "bar".
4586 NAME is a symbol defined in an archive. Return a symbol in the hash
4587 table that might be satisfied by the archive symbols. */
4589 static struct elf_link_hash_entry *
4590 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4591 struct bfd_link_info *info,
4594 struct elf_link_hash_entry *h;
4598 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4600 /* Don't return this sym if it is a fake function descriptor
4601 created by add_symbol_adjust. */
4602 && !(h->root.type == bfd_link_hash_undefweak
4603 && ((struct ppc_link_hash_entry *) h)->fake))
4609 len = strlen (name);
4610 dot_name = bfd_alloc (abfd, len + 2);
4611 if (dot_name == NULL)
4612 return (struct elf_link_hash_entry *) 0 - 1;
4614 memcpy (dot_name + 1, name, len + 1);
4615 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4616 bfd_release (abfd, dot_name);
4620 /* This function satisfies all old ABI object references to ".bar" if a
4621 new ABI object defines "bar". Well, at least, undefined dot symbols
4622 are made weak. This stops later archive searches from including an
4623 object if we already have a function descriptor definition. It also
4624 prevents the linker complaining about undefined symbols.
4625 We also check and correct mismatched symbol visibility here. The
4626 most restrictive visibility of the function descriptor and the
4627 function entry symbol is used. */
4630 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4632 struct ppc_link_hash_table *htab;
4633 struct ppc_link_hash_entry *fdh;
4635 if (eh->elf.root.type == bfd_link_hash_indirect)
4638 if (eh->elf.root.type == bfd_link_hash_warning)
4639 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4641 if (eh->elf.root.root.string[0] != '.')
4644 htab = ppc_hash_table (info);
4648 fdh = lookup_fdh (eh, htab);
4651 if (!info->relocatable
4652 && (eh->elf.root.type == bfd_link_hash_undefined
4653 || eh->elf.root.type == bfd_link_hash_undefweak)
4654 && eh->elf.ref_regular)
4656 /* Make an undefweak function descriptor sym, which is enough to
4657 pull in an --as-needed shared lib, but won't cause link
4658 errors. Archives are handled elsewhere. */
4659 fdh = make_fdh (info, eh);
4662 fdh->elf.ref_regular = 1;
4667 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4668 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4669 if (entry_vis < descr_vis)
4670 fdh->elf.other += entry_vis - descr_vis;
4671 else if (entry_vis > descr_vis)
4672 eh->elf.other += descr_vis - entry_vis;
4674 if ((fdh->elf.root.type == bfd_link_hash_defined
4675 || fdh->elf.root.type == bfd_link_hash_defweak)
4676 && eh->elf.root.type == bfd_link_hash_undefined)
4678 eh->elf.root.type = bfd_link_hash_undefweak;
4679 eh->was_undefined = 1;
4680 htab->twiddled_syms = 1;
4687 /* Process list of dot-symbols we made in link_hash_newfunc. */
4690 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4692 struct ppc_link_hash_table *htab;
4693 struct ppc_link_hash_entry **p, *eh;
4695 if (!is_ppc64_elf (info->output_bfd))
4697 htab = ppc_hash_table (info);
4701 if (is_ppc64_elf (ibfd))
4703 p = &htab->dot_syms;
4704 while ((eh = *p) != NULL)
4707 if (!add_symbol_adjust (eh, info))
4709 p = &eh->u.next_dot_sym;
4713 /* Clear the list for non-ppc64 input files. */
4714 p = &htab->dot_syms;
4715 while ((eh = *p) != NULL)
4718 p = &eh->u.next_dot_sym;
4721 /* We need to fix the undefs list for any syms we have twiddled to
4723 if (htab->twiddled_syms)
4725 bfd_link_repair_undef_list (&htab->elf.root);
4726 htab->twiddled_syms = 0;
4731 /* Undo hash table changes when an --as-needed input file is determined
4732 not to be needed. */
4735 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4736 struct bfd_link_info *info)
4738 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4743 htab->dot_syms = NULL;
4747 static struct plt_entry **
4748 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4749 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4751 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4752 struct plt_entry **local_plt;
4753 unsigned char *local_got_tls_masks;
4755 if (local_got_ents == NULL)
4757 bfd_size_type size = symtab_hdr->sh_info;
4759 size *= (sizeof (*local_got_ents)
4760 + sizeof (*local_plt)
4761 + sizeof (*local_got_tls_masks));
4762 local_got_ents = bfd_zalloc (abfd, size);
4763 if (local_got_ents == NULL)
4765 elf_local_got_ents (abfd) = local_got_ents;
4768 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4770 struct got_entry *ent;
4772 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4773 if (ent->addend == r_addend
4774 && ent->owner == abfd
4775 && ent->tls_type == tls_type)
4779 bfd_size_type amt = sizeof (*ent);
4780 ent = bfd_alloc (abfd, amt);
4783 ent->next = local_got_ents[r_symndx];
4784 ent->addend = r_addend;
4786 ent->tls_type = tls_type;
4787 ent->is_indirect = FALSE;
4788 ent->got.refcount = 0;
4789 local_got_ents[r_symndx] = ent;
4791 ent->got.refcount += 1;
4794 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4795 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
4796 local_got_tls_masks[r_symndx] |= tls_type;
4798 return local_plt + r_symndx;
4802 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4804 struct plt_entry *ent;
4806 for (ent = *plist; ent != NULL; ent = ent->next)
4807 if (ent->addend == addend)
4811 bfd_size_type amt = sizeof (*ent);
4812 ent = bfd_alloc (abfd, amt);
4816 ent->addend = addend;
4817 ent->plt.refcount = 0;
4820 ent->plt.refcount += 1;
4825 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4827 return (r_type == R_PPC64_REL24
4828 || r_type == R_PPC64_REL14
4829 || r_type == R_PPC64_REL14_BRTAKEN
4830 || r_type == R_PPC64_REL14_BRNTAKEN
4831 || r_type == R_PPC64_ADDR24
4832 || r_type == R_PPC64_ADDR14
4833 || r_type == R_PPC64_ADDR14_BRTAKEN
4834 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4837 /* Look through the relocs for a section during the first phase, and
4838 calculate needed space in the global offset table, procedure
4839 linkage table, and dynamic reloc sections. */
4842 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4843 asection *sec, const Elf_Internal_Rela *relocs)
4845 struct ppc_link_hash_table *htab;
4846 Elf_Internal_Shdr *symtab_hdr;
4847 struct elf_link_hash_entry **sym_hashes;
4848 const Elf_Internal_Rela *rel;
4849 const Elf_Internal_Rela *rel_end;
4851 asection **opd_sym_map;
4852 struct elf_link_hash_entry *tga, *dottga;
4854 if (info->relocatable)
4857 /* Don't do anything special with non-loaded, non-alloced sections.
4858 In particular, any relocs in such sections should not affect GOT
4859 and PLT reference counting (ie. we don't allow them to create GOT
4860 or PLT entries), there's no possibility or desire to optimize TLS
4861 relocs, and there's not much point in propagating relocs to shared
4862 libs that the dynamic linker won't relocate. */
4863 if ((sec->flags & SEC_ALLOC) == 0)
4866 BFD_ASSERT (is_ppc64_elf (abfd));
4868 htab = ppc_hash_table (info);
4872 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4873 FALSE, FALSE, TRUE);
4874 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4875 FALSE, FALSE, TRUE);
4876 symtab_hdr = &elf_symtab_hdr (abfd);
4877 sym_hashes = elf_sym_hashes (abfd);
4880 if (strcmp (sec->name, ".opd") == 0)
4882 /* Garbage collection needs some extra help with .opd sections.
4883 We don't want to necessarily keep everything referenced by
4884 relocs in .opd, as that would keep all functions. Instead,
4885 if we reference an .opd symbol (a function descriptor), we
4886 want to keep the function code symbol's section. This is
4887 easy for global symbols, but for local syms we need to keep
4888 information about the associated function section. */
4891 amt = sec->size * sizeof (*opd_sym_map) / 8;
4892 opd_sym_map = bfd_zalloc (abfd, amt);
4893 if (opd_sym_map == NULL)
4895 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4896 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4897 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4900 if (htab->sfpr == NULL
4901 && !create_linkage_sections (htab->elf.dynobj, info))
4904 rel_end = relocs + sec->reloc_count;
4905 for (rel = relocs; rel < rel_end; rel++)
4907 unsigned long r_symndx;
4908 struct elf_link_hash_entry *h;
4909 enum elf_ppc64_reloc_type r_type;
4911 struct _ppc64_elf_section_data *ppc64_sec;
4912 struct plt_entry **ifunc;
4914 r_symndx = ELF64_R_SYM (rel->r_info);
4915 if (r_symndx < symtab_hdr->sh_info)
4919 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4920 h = elf_follow_link (h);
4927 if (h->type == STT_GNU_IFUNC)
4930 ifunc = &h->plt.plist;
4935 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4940 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4942 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4943 rel->r_addend, PLT_IFUNC);
4948 r_type = ELF64_R_TYPE (rel->r_info);
4949 if (is_branch_reloc (r_type))
4951 if (h != NULL && (h == tga || h == dottga))
4954 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
4955 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
4956 /* We have a new-style __tls_get_addr call with a marker
4960 /* Mark this section as having an old-style call. */
4961 sec->has_tls_get_addr_call = 1;
4964 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4966 && !update_plt_info (abfd, ifunc, rel->r_addend))
4974 /* These special tls relocs tie a call to __tls_get_addr with
4975 its parameter symbol. */
4978 case R_PPC64_GOT_TLSLD16:
4979 case R_PPC64_GOT_TLSLD16_LO:
4980 case R_PPC64_GOT_TLSLD16_HI:
4981 case R_PPC64_GOT_TLSLD16_HA:
4982 tls_type = TLS_TLS | TLS_LD;
4985 case R_PPC64_GOT_TLSGD16:
4986 case R_PPC64_GOT_TLSGD16_LO:
4987 case R_PPC64_GOT_TLSGD16_HI:
4988 case R_PPC64_GOT_TLSGD16_HA:
4989 tls_type = TLS_TLS | TLS_GD;
4992 case R_PPC64_GOT_TPREL16_DS:
4993 case R_PPC64_GOT_TPREL16_LO_DS:
4994 case R_PPC64_GOT_TPREL16_HI:
4995 case R_PPC64_GOT_TPREL16_HA:
4996 if (!info->executable)
4997 info->flags |= DF_STATIC_TLS;
4998 tls_type = TLS_TLS | TLS_TPREL;
5001 case R_PPC64_GOT_DTPREL16_DS:
5002 case R_PPC64_GOT_DTPREL16_LO_DS:
5003 case R_PPC64_GOT_DTPREL16_HI:
5004 case R_PPC64_GOT_DTPREL16_HA:
5005 tls_type = TLS_TLS | TLS_DTPREL;
5007 sec->has_tls_reloc = 1;
5011 case R_PPC64_GOT16_DS:
5012 case R_PPC64_GOT16_HA:
5013 case R_PPC64_GOT16_HI:
5014 case R_PPC64_GOT16_LO:
5015 case R_PPC64_GOT16_LO_DS:
5016 /* This symbol requires a global offset table entry. */
5017 sec->has_toc_reloc = 1;
5018 if (r_type == R_PPC64_GOT_TLSLD16
5019 || r_type == R_PPC64_GOT_TLSGD16
5020 || r_type == R_PPC64_GOT_TPREL16_DS
5021 || r_type == R_PPC64_GOT_DTPREL16_DS
5022 || r_type == R_PPC64_GOT16
5023 || r_type == R_PPC64_GOT16_DS)
5025 htab->do_multi_toc = 1;
5026 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5029 if (ppc64_elf_tdata (abfd)->got == NULL
5030 && !create_got_section (abfd, info))
5035 struct ppc_link_hash_entry *eh;
5036 struct got_entry *ent;
5038 eh = (struct ppc_link_hash_entry *) h;
5039 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5040 if (ent->addend == rel->r_addend
5041 && ent->owner == abfd
5042 && ent->tls_type == tls_type)
5046 bfd_size_type amt = sizeof (*ent);
5047 ent = bfd_alloc (abfd, amt);
5050 ent->next = eh->elf.got.glist;
5051 ent->addend = rel->r_addend;
5053 ent->tls_type = tls_type;
5054 ent->is_indirect = FALSE;
5055 ent->got.refcount = 0;
5056 eh->elf.got.glist = ent;
5058 ent->got.refcount += 1;
5059 eh->tls_mask |= tls_type;
5062 /* This is a global offset table entry for a local symbol. */
5063 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5064 rel->r_addend, tls_type))
5068 case R_PPC64_PLT16_HA:
5069 case R_PPC64_PLT16_HI:
5070 case R_PPC64_PLT16_LO:
5073 /* This symbol requires a procedure linkage table entry. We
5074 actually build the entry in adjust_dynamic_symbol,
5075 because this might be a case of linking PIC code without
5076 linking in any dynamic objects, in which case we don't
5077 need to generate a procedure linkage table after all. */
5080 /* It does not make sense to have a procedure linkage
5081 table entry for a local symbol. */
5082 bfd_set_error (bfd_error_bad_value);
5087 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5090 if (h->root.root.string[0] == '.'
5091 && h->root.root.string[1] != '\0')
5092 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5096 /* The following relocations don't need to propagate the
5097 relocation if linking a shared object since they are
5098 section relative. */
5099 case R_PPC64_SECTOFF:
5100 case R_PPC64_SECTOFF_LO:
5101 case R_PPC64_SECTOFF_HI:
5102 case R_PPC64_SECTOFF_HA:
5103 case R_PPC64_SECTOFF_DS:
5104 case R_PPC64_SECTOFF_LO_DS:
5105 case R_PPC64_DTPREL16:
5106 case R_PPC64_DTPREL16_LO:
5107 case R_PPC64_DTPREL16_HI:
5108 case R_PPC64_DTPREL16_HA:
5109 case R_PPC64_DTPREL16_DS:
5110 case R_PPC64_DTPREL16_LO_DS:
5111 case R_PPC64_DTPREL16_HIGHER:
5112 case R_PPC64_DTPREL16_HIGHERA:
5113 case R_PPC64_DTPREL16_HIGHEST:
5114 case R_PPC64_DTPREL16_HIGHESTA:
5119 case R_PPC64_REL16_LO:
5120 case R_PPC64_REL16_HI:
5121 case R_PPC64_REL16_HA:
5125 case R_PPC64_TOC16_DS:
5126 htab->do_multi_toc = 1;
5127 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5128 case R_PPC64_TOC16_LO:
5129 case R_PPC64_TOC16_HI:
5130 case R_PPC64_TOC16_HA:
5131 case R_PPC64_TOC16_LO_DS:
5132 sec->has_toc_reloc = 1;
5135 /* This relocation describes the C++ object vtable hierarchy.
5136 Reconstruct it for later use during GC. */
5137 case R_PPC64_GNU_VTINHERIT:
5138 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5142 /* This relocation describes which C++ vtable entries are actually
5143 used. Record for later use during GC. */
5144 case R_PPC64_GNU_VTENTRY:
5145 BFD_ASSERT (h != NULL);
5147 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5152 case R_PPC64_REL14_BRTAKEN:
5153 case R_PPC64_REL14_BRNTAKEN:
5155 asection *dest = NULL;
5157 /* Heuristic: If jumping outside our section, chances are
5158 we are going to need a stub. */
5161 /* If the sym is weak it may be overridden later, so
5162 don't assume we know where a weak sym lives. */
5163 if (h->root.type == bfd_link_hash_defined)
5164 dest = h->root.u.def.section;
5168 Elf_Internal_Sym *isym;
5170 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5175 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5179 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5184 if (h != NULL && ifunc == NULL)
5186 /* We may need a .plt entry if the function this reloc
5187 refers to is in a shared lib. */
5188 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5191 if (h->root.root.string[0] == '.'
5192 && h->root.root.string[1] != '\0')
5193 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5194 if (h == tga || h == dottga)
5195 sec->has_tls_reloc = 1;
5199 case R_PPC64_TPREL64:
5200 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5201 if (!info->executable)
5202 info->flags |= DF_STATIC_TLS;
5205 case R_PPC64_DTPMOD64:
5206 if (rel + 1 < rel_end
5207 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5208 && rel[1].r_offset == rel->r_offset + 8)
5209 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5211 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5214 case R_PPC64_DTPREL64:
5215 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5217 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5218 && rel[-1].r_offset == rel->r_offset - 8)
5219 /* This is the second reloc of a dtpmod, dtprel pair.
5220 Don't mark with TLS_DTPREL. */
5224 sec->has_tls_reloc = 1;
5227 struct ppc_link_hash_entry *eh;
5228 eh = (struct ppc_link_hash_entry *) h;
5229 eh->tls_mask |= tls_type;
5232 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5233 rel->r_addend, tls_type))
5236 ppc64_sec = ppc64_elf_section_data (sec);
5237 if (ppc64_sec->sec_type != sec_toc)
5241 /* One extra to simplify get_tls_mask. */
5242 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5243 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5244 if (ppc64_sec->u.toc.symndx == NULL)
5246 amt = sec->size * sizeof (bfd_vma) / 8;
5247 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5248 if (ppc64_sec->u.toc.add == NULL)
5250 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5251 ppc64_sec->sec_type = sec_toc;
5253 BFD_ASSERT (rel->r_offset % 8 == 0);
5254 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5255 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5257 /* Mark the second slot of a GD or LD entry.
5258 -1 to indicate GD and -2 to indicate LD. */
5259 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5260 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5261 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5262 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5265 case R_PPC64_TPREL16:
5266 case R_PPC64_TPREL16_LO:
5267 case R_PPC64_TPREL16_HI:
5268 case R_PPC64_TPREL16_HA:
5269 case R_PPC64_TPREL16_DS:
5270 case R_PPC64_TPREL16_LO_DS:
5271 case R_PPC64_TPREL16_HIGHER:
5272 case R_PPC64_TPREL16_HIGHERA:
5273 case R_PPC64_TPREL16_HIGHEST:
5274 case R_PPC64_TPREL16_HIGHESTA:
5277 if (!info->executable)
5278 info->flags |= DF_STATIC_TLS;
5283 case R_PPC64_ADDR64:
5284 if (opd_sym_map != NULL
5285 && rel + 1 < rel_end
5286 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5290 if (h->root.root.string[0] == '.'
5291 && h->root.root.string[1] != 0
5292 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5295 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5300 Elf_Internal_Sym *isym;
5302 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5307 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5308 if (s != NULL && s != sec)
5309 opd_sym_map[rel->r_offset / 8] = s;
5317 case R_PPC64_ADDR14:
5318 case R_PPC64_ADDR14_BRNTAKEN:
5319 case R_PPC64_ADDR14_BRTAKEN:
5320 case R_PPC64_ADDR16:
5321 case R_PPC64_ADDR16_DS:
5322 case R_PPC64_ADDR16_HA:
5323 case R_PPC64_ADDR16_HI:
5324 case R_PPC64_ADDR16_HIGHER:
5325 case R_PPC64_ADDR16_HIGHERA:
5326 case R_PPC64_ADDR16_HIGHEST:
5327 case R_PPC64_ADDR16_HIGHESTA:
5328 case R_PPC64_ADDR16_LO:
5329 case R_PPC64_ADDR16_LO_DS:
5330 case R_PPC64_ADDR24:
5331 case R_PPC64_ADDR32:
5332 case R_PPC64_UADDR16:
5333 case R_PPC64_UADDR32:
5334 case R_PPC64_UADDR64:
5336 if (h != NULL && !info->shared)
5337 /* We may need a copy reloc. */
5340 /* Don't propagate .opd relocs. */
5341 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5344 /* If we are creating a shared library, and this is a reloc
5345 against a global symbol, or a non PC relative reloc
5346 against a local symbol, then we need to copy the reloc
5347 into the shared library. However, if we are linking with
5348 -Bsymbolic, we do not need to copy a reloc against a
5349 global symbol which is defined in an object we are
5350 including in the link (i.e., DEF_REGULAR is set). At
5351 this point we have not seen all the input files, so it is
5352 possible that DEF_REGULAR is not set now but will be set
5353 later (it is never cleared). In case of a weak definition,
5354 DEF_REGULAR may be cleared later by a strong definition in
5355 a shared library. We account for that possibility below by
5356 storing information in the dyn_relocs field of the hash
5357 table entry. A similar situation occurs when creating
5358 shared libraries and symbol visibility changes render the
5361 If on the other hand, we are creating an executable, we
5362 may need to keep relocations for symbols satisfied by a
5363 dynamic library if we manage to avoid copy relocs for the
5367 && (must_be_dyn_reloc (info, r_type)
5369 && (! info->symbolic
5370 || h->root.type == bfd_link_hash_defweak
5371 || !h->def_regular))))
5372 || (ELIMINATE_COPY_RELOCS
5375 && (h->root.type == bfd_link_hash_defweak
5376 || !h->def_regular))
5380 struct ppc_dyn_relocs *p;
5381 struct ppc_dyn_relocs **head;
5383 /* We must copy these reloc types into the output file.
5384 Create a reloc section in dynobj and make room for
5388 sreloc = _bfd_elf_make_dynamic_reloc_section
5389 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5395 /* If this is a global symbol, we count the number of
5396 relocations we need for this symbol. */
5399 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5403 /* Track dynamic relocs needed for local syms too.
5404 We really need local syms available to do this
5408 Elf_Internal_Sym *isym;
5410 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5415 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5419 vpp = &elf_section_data (s)->local_dynrel;
5420 head = (struct ppc_dyn_relocs **) vpp;
5424 if (p == NULL || p->sec != sec)
5426 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5437 if (!must_be_dyn_reloc (info, r_type))
5450 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5451 of the code entry point, and its section. */
5454 opd_entry_value (asection *opd_sec,
5456 asection **code_sec,
5459 bfd *opd_bfd = opd_sec->owner;
5460 Elf_Internal_Rela *relocs;
5461 Elf_Internal_Rela *lo, *hi, *look;
5464 /* No relocs implies we are linking a --just-symbols object. */
5465 if (opd_sec->reloc_count == 0)
5467 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
5468 return (bfd_vma) -1;
5470 if (code_sec != NULL)
5472 asection *sec, *likely = NULL;
5473 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5475 && (sec->flags & SEC_LOAD) != 0
5476 && (sec->flags & SEC_ALLOC) != 0)
5481 if (code_off != NULL)
5482 *code_off = val - likely->vma;
5488 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5490 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5492 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5494 /* Go find the opd reloc at the sym address. */
5496 BFD_ASSERT (lo != NULL);
5497 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5501 look = lo + (hi - lo) / 2;
5502 if (look->r_offset < offset)
5504 else if (look->r_offset > offset)
5508 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5510 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5511 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5513 unsigned long symndx = ELF64_R_SYM (look->r_info);
5516 if (symndx < symtab_hdr->sh_info)
5518 Elf_Internal_Sym *sym;
5520 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5523 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5524 symtab_hdr->sh_info,
5525 0, NULL, NULL, NULL);
5528 symtab_hdr->contents = (bfd_byte *) sym;
5532 val = sym->st_value;
5533 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5534 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5538 struct elf_link_hash_entry **sym_hashes;
5539 struct elf_link_hash_entry *rh;
5541 sym_hashes = elf_sym_hashes (opd_bfd);
5542 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5543 rh = elf_follow_link (rh);
5544 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5545 || rh->root.type == bfd_link_hash_defweak);
5546 val = rh->root.u.def.value;
5547 sec = rh->root.u.def.section;
5549 val += look->r_addend;
5550 if (code_off != NULL)
5552 if (code_sec != NULL)
5554 if (sec != NULL && sec->output_section != NULL)
5555 val += sec->output_section->vma + sec->output_offset;
5564 /* Return true if symbol is defined in a regular object file. */
5567 is_static_defined (struct elf_link_hash_entry *h)
5569 return ((h->root.type == bfd_link_hash_defined
5570 || h->root.type == bfd_link_hash_defweak)
5571 && h->root.u.def.section != NULL
5572 && h->root.u.def.section->output_section != NULL);
5575 /* If FDH is a function descriptor symbol, return the associated code
5576 entry symbol if it is defined. Return NULL otherwise. */
5578 static struct ppc_link_hash_entry *
5579 defined_code_entry (struct ppc_link_hash_entry *fdh)
5581 if (fdh->is_func_descriptor)
5583 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5584 if (fh->elf.root.type == bfd_link_hash_defined
5585 || fh->elf.root.type == bfd_link_hash_defweak)
5591 /* If FH is a function code entry symbol, return the associated
5592 function descriptor symbol if it is defined. Return NULL otherwise. */
5594 static struct ppc_link_hash_entry *
5595 defined_func_desc (struct ppc_link_hash_entry *fh)
5598 && fh->oh->is_func_descriptor)
5600 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5601 if (fdh->elf.root.type == bfd_link_hash_defined
5602 || fdh->elf.root.type == bfd_link_hash_defweak)
5608 /* Mark all our entry sym sections, both opd and code section. */
5611 ppc64_elf_gc_keep (struct bfd_link_info *info)
5613 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5614 struct bfd_sym_chain *sym;
5619 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5621 struct ppc_link_hash_entry *eh, *fh;
5624 eh = (struct ppc_link_hash_entry *)
5625 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5628 if (eh->elf.root.type != bfd_link_hash_defined
5629 && eh->elf.root.type != bfd_link_hash_defweak)
5632 fh = defined_code_entry (eh);
5635 sec = fh->elf.root.u.def.section;
5636 sec->flags |= SEC_KEEP;
5638 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5639 && opd_entry_value (eh->elf.root.u.def.section,
5640 eh->elf.root.u.def.value,
5641 &sec, NULL) != (bfd_vma) -1)
5642 sec->flags |= SEC_KEEP;
5644 sec = eh->elf.root.u.def.section;
5645 sec->flags |= SEC_KEEP;
5649 /* Mark sections containing dynamically referenced symbols. When
5650 building shared libraries, we must assume that any visible symbol is
5654 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5656 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5657 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5658 struct ppc_link_hash_entry *fdh;
5660 if (eh->elf.root.type == bfd_link_hash_warning)
5661 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5663 /* Dynamic linking info is on the func descriptor sym. */
5664 fdh = defined_func_desc (eh);
5668 if ((eh->elf.root.type == bfd_link_hash_defined
5669 || eh->elf.root.type == bfd_link_hash_defweak)
5670 && (eh->elf.ref_dynamic
5671 || (!info->executable
5672 && eh->elf.def_regular
5673 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5674 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5677 struct ppc_link_hash_entry *fh;
5679 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5681 /* Function descriptor syms cause the associated
5682 function code sym section to be marked. */
5683 fh = defined_code_entry (eh);
5686 code_sec = fh->elf.root.u.def.section;
5687 code_sec->flags |= SEC_KEEP;
5689 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5690 && opd_entry_value (eh->elf.root.u.def.section,
5691 eh->elf.root.u.def.value,
5692 &code_sec, NULL) != (bfd_vma) -1)
5693 code_sec->flags |= SEC_KEEP;
5699 /* Return the section that should be marked against GC for a given
5703 ppc64_elf_gc_mark_hook (asection *sec,
5704 struct bfd_link_info *info,
5705 Elf_Internal_Rela *rel,
5706 struct elf_link_hash_entry *h,
5707 Elf_Internal_Sym *sym)
5711 /* Syms return NULL if we're marking .opd, so we avoid marking all
5712 function sections, as all functions are referenced in .opd. */
5714 if (get_opd_info (sec) != NULL)
5719 enum elf_ppc64_reloc_type r_type;
5720 struct ppc_link_hash_entry *eh, *fh, *fdh;
5722 r_type = ELF64_R_TYPE (rel->r_info);
5725 case R_PPC64_GNU_VTINHERIT:
5726 case R_PPC64_GNU_VTENTRY:
5730 switch (h->root.type)
5732 case bfd_link_hash_defined:
5733 case bfd_link_hash_defweak:
5734 eh = (struct ppc_link_hash_entry *) h;
5735 fdh = defined_func_desc (eh);
5739 /* Function descriptor syms cause the associated
5740 function code sym section to be marked. */
5741 fh = defined_code_entry (eh);
5744 /* They also mark their opd section. */
5745 eh->elf.root.u.def.section->gc_mark = 1;
5747 rsec = fh->elf.root.u.def.section;
5749 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5750 && opd_entry_value (eh->elf.root.u.def.section,
5751 eh->elf.root.u.def.value,
5752 &rsec, NULL) != (bfd_vma) -1)
5753 eh->elf.root.u.def.section->gc_mark = 1;
5755 rsec = h->root.u.def.section;
5758 case bfd_link_hash_common:
5759 rsec = h->root.u.c.p->section;
5763 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5769 struct _opd_sec_data *opd;
5771 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5772 opd = get_opd_info (rsec);
5773 if (opd != NULL && opd->func_sec != NULL)
5777 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5784 /* Update the .got, .plt. and dynamic reloc reference counts for the
5785 section being removed. */
5788 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5789 asection *sec, const Elf_Internal_Rela *relocs)
5791 struct ppc_link_hash_table *htab;
5792 Elf_Internal_Shdr *symtab_hdr;
5793 struct elf_link_hash_entry **sym_hashes;
5794 struct got_entry **local_got_ents;
5795 const Elf_Internal_Rela *rel, *relend;
5797 if (info->relocatable)
5800 if ((sec->flags & SEC_ALLOC) == 0)
5803 elf_section_data (sec)->local_dynrel = NULL;
5805 htab = ppc_hash_table (info);
5809 symtab_hdr = &elf_symtab_hdr (abfd);
5810 sym_hashes = elf_sym_hashes (abfd);
5811 local_got_ents = elf_local_got_ents (abfd);
5813 relend = relocs + sec->reloc_count;
5814 for (rel = relocs; rel < relend; rel++)
5816 unsigned long r_symndx;
5817 enum elf_ppc64_reloc_type r_type;
5818 struct elf_link_hash_entry *h = NULL;
5819 unsigned char tls_type = 0;
5821 r_symndx = ELF64_R_SYM (rel->r_info);
5822 r_type = ELF64_R_TYPE (rel->r_info);
5823 if (r_symndx >= symtab_hdr->sh_info)
5825 struct ppc_link_hash_entry *eh;
5826 struct ppc_dyn_relocs **pp;
5827 struct ppc_dyn_relocs *p;
5829 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5830 h = elf_follow_link (h);
5831 eh = (struct ppc_link_hash_entry *) h;
5833 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5836 /* Everything must go for SEC. */
5842 if (is_branch_reloc (r_type))
5844 struct plt_entry **ifunc = NULL;
5847 if (h->type == STT_GNU_IFUNC)
5848 ifunc = &h->plt.plist;
5850 else if (local_got_ents != NULL)
5852 struct plt_entry **local_plt = (struct plt_entry **)
5853 (local_got_ents + symtab_hdr->sh_info);
5854 unsigned char *local_got_tls_masks = (unsigned char *)
5855 (local_plt + symtab_hdr->sh_info);
5856 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5857 ifunc = local_plt + r_symndx;
5861 struct plt_entry *ent;
5863 for (ent = *ifunc; ent != NULL; ent = ent->next)
5864 if (ent->addend == rel->r_addend)
5868 if (ent->plt.refcount > 0)
5869 ent->plt.refcount -= 1;
5876 case R_PPC64_GOT_TLSLD16:
5877 case R_PPC64_GOT_TLSLD16_LO:
5878 case R_PPC64_GOT_TLSLD16_HI:
5879 case R_PPC64_GOT_TLSLD16_HA:
5880 tls_type = TLS_TLS | TLS_LD;
5883 case R_PPC64_GOT_TLSGD16:
5884 case R_PPC64_GOT_TLSGD16_LO:
5885 case R_PPC64_GOT_TLSGD16_HI:
5886 case R_PPC64_GOT_TLSGD16_HA:
5887 tls_type = TLS_TLS | TLS_GD;
5890 case R_PPC64_GOT_TPREL16_DS:
5891 case R_PPC64_GOT_TPREL16_LO_DS:
5892 case R_PPC64_GOT_TPREL16_HI:
5893 case R_PPC64_GOT_TPREL16_HA:
5894 tls_type = TLS_TLS | TLS_TPREL;
5897 case R_PPC64_GOT_DTPREL16_DS:
5898 case R_PPC64_GOT_DTPREL16_LO_DS:
5899 case R_PPC64_GOT_DTPREL16_HI:
5900 case R_PPC64_GOT_DTPREL16_HA:
5901 tls_type = TLS_TLS | TLS_DTPREL;
5905 case R_PPC64_GOT16_DS:
5906 case R_PPC64_GOT16_HA:
5907 case R_PPC64_GOT16_HI:
5908 case R_PPC64_GOT16_LO:
5909 case R_PPC64_GOT16_LO_DS:
5912 struct got_entry *ent;
5917 ent = local_got_ents[r_symndx];
5919 for (; ent != NULL; ent = ent->next)
5920 if (ent->addend == rel->r_addend
5921 && ent->owner == abfd
5922 && ent->tls_type == tls_type)
5926 if (ent->got.refcount > 0)
5927 ent->got.refcount -= 1;
5931 case R_PPC64_PLT16_HA:
5932 case R_PPC64_PLT16_HI:
5933 case R_PPC64_PLT16_LO:
5937 case R_PPC64_REL14_BRNTAKEN:
5938 case R_PPC64_REL14_BRTAKEN:
5942 struct plt_entry *ent;
5944 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5945 if (ent->addend == rel->r_addend)
5947 if (ent != NULL && ent->plt.refcount > 0)
5948 ent->plt.refcount -= 1;
5959 /* The maximum size of .sfpr. */
5960 #define SFPR_MAX (218*4)
5962 struct sfpr_def_parms
5964 const char name[12];
5965 unsigned char lo, hi;
5966 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5967 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5970 /* Auto-generate _save*, _rest* functions in .sfpr. */
5973 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5975 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5977 size_t len = strlen (parm->name);
5978 bfd_boolean writing = FALSE;
5984 memcpy (sym, parm->name, len);
5987 for (i = parm->lo; i <= parm->hi; i++)
5989 struct elf_link_hash_entry *h;
5991 sym[len + 0] = i / 10 + '0';
5992 sym[len + 1] = i % 10 + '0';
5993 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5997 h->root.type = bfd_link_hash_defined;
5998 h->root.u.def.section = htab->sfpr;
5999 h->root.u.def.value = htab->sfpr->size;
6002 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6004 if (htab->sfpr->contents == NULL)
6006 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6007 if (htab->sfpr->contents == NULL)
6013 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6015 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6017 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6018 htab->sfpr->size = p - htab->sfpr->contents;
6026 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6028 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6033 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6035 p = savegpr0 (abfd, p, r);
6036 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6038 bfd_put_32 (abfd, BLR, p);
6043 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6045 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6050 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6052 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6054 p = restgpr0 (abfd, p, r);
6055 bfd_put_32 (abfd, MTLR_R0, p);
6059 p = restgpr0 (abfd, p, 30);
6060 p = restgpr0 (abfd, p, 31);
6062 bfd_put_32 (abfd, BLR, p);
6067 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6069 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6074 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6076 p = savegpr1 (abfd, p, r);
6077 bfd_put_32 (abfd, BLR, p);
6082 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6084 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6089 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6091 p = restgpr1 (abfd, p, r);
6092 bfd_put_32 (abfd, BLR, p);
6097 savefpr (bfd *abfd, bfd_byte *p, int r)
6099 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6104 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6106 p = savefpr (abfd, p, r);
6107 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6109 bfd_put_32 (abfd, BLR, p);
6114 restfpr (bfd *abfd, bfd_byte *p, int r)
6116 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6121 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6123 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6125 p = restfpr (abfd, p, r);
6126 bfd_put_32 (abfd, MTLR_R0, p);
6130 p = restfpr (abfd, p, 30);
6131 p = restfpr (abfd, p, 31);
6133 bfd_put_32 (abfd, BLR, p);
6138 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6140 p = savefpr (abfd, p, r);
6141 bfd_put_32 (abfd, BLR, p);
6146 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6148 p = restfpr (abfd, p, r);
6149 bfd_put_32 (abfd, BLR, p);
6154 savevr (bfd *abfd, bfd_byte *p, int r)
6156 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6158 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6163 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6165 p = savevr (abfd, p, r);
6166 bfd_put_32 (abfd, BLR, p);
6171 restvr (bfd *abfd, bfd_byte *p, int r)
6173 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6175 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6180 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6182 p = restvr (abfd, p, r);
6183 bfd_put_32 (abfd, BLR, p);
6187 /* Called via elf_link_hash_traverse to transfer dynamic linking
6188 information on function code symbol entries to their corresponding
6189 function descriptor symbol entries. */
6192 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6194 struct bfd_link_info *info;
6195 struct ppc_link_hash_table *htab;
6196 struct plt_entry *ent;
6197 struct ppc_link_hash_entry *fh;
6198 struct ppc_link_hash_entry *fdh;
6199 bfd_boolean force_local;
6201 fh = (struct ppc_link_hash_entry *) h;
6202 if (fh->elf.root.type == bfd_link_hash_indirect)
6205 if (fh->elf.root.type == bfd_link_hash_warning)
6206 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
6209 htab = ppc_hash_table (info);
6213 /* Resolve undefined references to dot-symbols as the value
6214 in the function descriptor, if we have one in a regular object.
6215 This is to satisfy cases like ".quad .foo". Calls to functions
6216 in dynamic objects are handled elsewhere. */
6217 if (fh->elf.root.type == bfd_link_hash_undefweak
6218 && fh->was_undefined
6219 && (fdh = defined_func_desc (fh)) != NULL
6220 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6221 && opd_entry_value (fdh->elf.root.u.def.section,
6222 fdh->elf.root.u.def.value,
6223 &fh->elf.root.u.def.section,
6224 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6226 fh->elf.root.type = fdh->elf.root.type;
6227 fh->elf.forced_local = 1;
6228 fh->elf.def_regular = fdh->elf.def_regular;
6229 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6232 /* If this is a function code symbol, transfer dynamic linking
6233 information to the function descriptor symbol. */
6237 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6238 if (ent->plt.refcount > 0)
6241 || fh->elf.root.root.string[0] != '.'
6242 || fh->elf.root.root.string[1] == '\0')
6245 /* Find the corresponding function descriptor symbol. Create it
6246 as undefined if necessary. */
6248 fdh = lookup_fdh (fh, htab);
6250 && !info->executable
6251 && (fh->elf.root.type == bfd_link_hash_undefined
6252 || fh->elf.root.type == bfd_link_hash_undefweak))
6254 fdh = make_fdh (info, fh);
6259 /* Fake function descriptors are made undefweak. If the function
6260 code symbol is strong undefined, make the fake sym the same.
6261 If the function code symbol is defined, then force the fake
6262 descriptor local; We can't support overriding of symbols in a
6263 shared library on a fake descriptor. */
6267 && fdh->elf.root.type == bfd_link_hash_undefweak)
6269 if (fh->elf.root.type == bfd_link_hash_undefined)
6271 fdh->elf.root.type = bfd_link_hash_undefined;
6272 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6274 else if (fh->elf.root.type == bfd_link_hash_defined
6275 || fh->elf.root.type == bfd_link_hash_defweak)
6277 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6282 && !fdh->elf.forced_local
6283 && (!info->executable
6284 || fdh->elf.def_dynamic
6285 || fdh->elf.ref_dynamic
6286 || (fdh->elf.root.type == bfd_link_hash_undefweak
6287 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6289 if (fdh->elf.dynindx == -1)
6290 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6292 fdh->elf.ref_regular |= fh->elf.ref_regular;
6293 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6294 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6295 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6296 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6298 move_plt_plist (fh, fdh);
6299 fdh->elf.needs_plt = 1;
6301 fdh->is_func_descriptor = 1;
6306 /* Now that the info is on the function descriptor, clear the
6307 function code sym info. Any function code syms for which we
6308 don't have a definition in a regular file, we force local.
6309 This prevents a shared library from exporting syms that have
6310 been imported from another library. Function code syms that
6311 are really in the library we must leave global to prevent the
6312 linker dragging in a definition from a static library. */
6313 force_local = (!fh->elf.def_regular
6315 || !fdh->elf.def_regular
6316 || fdh->elf.forced_local);
6317 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6322 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6323 this hook to a) provide some gcc support functions, and b) transfer
6324 dynamic linking information gathered so far on function code symbol
6325 entries, to their corresponding function descriptor symbol entries. */
6328 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6329 struct bfd_link_info *info)
6331 struct ppc_link_hash_table *htab;
6333 const struct sfpr_def_parms funcs[] =
6335 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6336 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6337 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6338 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6339 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6340 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6341 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6342 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6343 { "._savef", 14, 31, savefpr, savefpr1_tail },
6344 { "._restf", 14, 31, restfpr, restfpr1_tail },
6345 { "_savevr_", 20, 31, savevr, savevr_tail },
6346 { "_restvr_", 20, 31, restvr, restvr_tail }
6349 htab = ppc_hash_table (info);
6353 if (htab->sfpr == NULL)
6354 /* We don't have any relocs. */
6357 /* Provide any missing _save* and _rest* functions. */
6358 htab->sfpr->size = 0;
6359 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6360 if (!sfpr_define (info, &funcs[i]))
6363 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6365 if (htab->sfpr->size == 0)
6366 htab->sfpr->flags |= SEC_EXCLUDE;
6371 /* Adjust a symbol defined by a dynamic object and referenced by a
6372 regular object. The current definition is in some section of the
6373 dynamic object, but we're not including those sections. We have to
6374 change the definition to something the rest of the link can
6378 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6379 struct elf_link_hash_entry *h)
6381 struct ppc_link_hash_table *htab;
6384 htab = ppc_hash_table (info);
6388 /* Deal with function syms. */
6389 if (h->type == STT_FUNC
6390 || h->type == STT_GNU_IFUNC
6393 /* Clear procedure linkage table information for any symbol that
6394 won't need a .plt entry. */
6395 struct plt_entry *ent;
6396 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6397 if (ent->plt.refcount > 0)
6400 || (h->type != STT_GNU_IFUNC
6401 && (SYMBOL_CALLS_LOCAL (info, h)
6402 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6403 && h->root.type == bfd_link_hash_undefweak))))
6405 h->plt.plist = NULL;
6410 h->plt.plist = NULL;
6412 /* If this is a weak symbol, and there is a real definition, the
6413 processor independent code will have arranged for us to see the
6414 real definition first, and we can just use the same value. */
6415 if (h->u.weakdef != NULL)
6417 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6418 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6419 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6420 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6421 if (ELIMINATE_COPY_RELOCS)
6422 h->non_got_ref = h->u.weakdef->non_got_ref;
6426 /* If we are creating a shared library, we must presume that the
6427 only references to the symbol are via the global offset table.
6428 For such cases we need not do anything here; the relocations will
6429 be handled correctly by relocate_section. */
6433 /* If there are no references to this symbol that do not use the
6434 GOT, we don't need to generate a copy reloc. */
6435 if (!h->non_got_ref)
6438 /* Don't generate a copy reloc for symbols defined in the executable. */
6439 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6442 if (ELIMINATE_COPY_RELOCS)
6444 struct ppc_link_hash_entry * eh;
6445 struct ppc_dyn_relocs *p;
6447 eh = (struct ppc_link_hash_entry *) h;
6448 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6450 s = p->sec->output_section;
6451 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6455 /* If we didn't find any dynamic relocs in read-only sections, then
6456 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6464 if (h->plt.plist != NULL)
6466 /* We should never get here, but unfortunately there are versions
6467 of gcc out there that improperly (for this ABI) put initialized
6468 function pointers, vtable refs and suchlike in read-only
6469 sections. Allow them to proceed, but warn that this might
6470 break at runtime. */
6471 (*_bfd_error_handler)
6472 (_("copy reloc against `%s' requires lazy plt linking; "
6473 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6474 h->root.root.string);
6477 /* This is a reference to a symbol defined by a dynamic object which
6478 is not a function. */
6482 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6483 h->root.root.string);
6487 /* We must allocate the symbol in our .dynbss section, which will
6488 become part of the .bss section of the executable. There will be
6489 an entry for this symbol in the .dynsym section. The dynamic
6490 object will contain position independent code, so all references
6491 from the dynamic object to this symbol will go through the global
6492 offset table. The dynamic linker will use the .dynsym entry to
6493 determine the address it must put in the global offset table, so
6494 both the dynamic object and the regular object will refer to the
6495 same memory location for the variable. */
6497 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6498 to copy the initial value out of the dynamic object and into the
6499 runtime process image. We need to remember the offset into the
6500 .rela.bss section we are going to use. */
6501 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6503 htab->relbss->size += sizeof (Elf64_External_Rela);
6509 return _bfd_elf_adjust_dynamic_copy (h, s);
6512 /* If given a function descriptor symbol, hide both the function code
6513 sym and the descriptor. */
6515 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6516 struct elf_link_hash_entry *h,
6517 bfd_boolean force_local)
6519 struct ppc_link_hash_entry *eh;
6520 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6522 eh = (struct ppc_link_hash_entry *) h;
6523 if (eh->is_func_descriptor)
6525 struct ppc_link_hash_entry *fh = eh->oh;
6530 struct ppc_link_hash_table *htab;
6533 /* We aren't supposed to use alloca in BFD because on
6534 systems which do not have alloca the version in libiberty
6535 calls xmalloc, which might cause the program to crash
6536 when it runs out of memory. This function doesn't have a
6537 return status, so there's no way to gracefully return an
6538 error. So cheat. We know that string[-1] can be safely
6539 accessed; It's either a string in an ELF string table,
6540 or allocated in an objalloc structure. */
6542 p = eh->elf.root.root.string - 1;
6545 htab = ppc_hash_table (info);
6549 fh = (struct ppc_link_hash_entry *)
6550 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6553 /* Unfortunately, if it so happens that the string we were
6554 looking for was allocated immediately before this string,
6555 then we overwrote the string terminator. That's the only
6556 reason the lookup should fail. */
6559 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6560 while (q >= eh->elf.root.root.string && *q == *p)
6562 if (q < eh->elf.root.root.string && *p == '.')
6563 fh = (struct ppc_link_hash_entry *)
6564 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6573 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6578 get_sym_h (struct elf_link_hash_entry **hp,
6579 Elf_Internal_Sym **symp,
6581 unsigned char **tls_maskp,
6582 Elf_Internal_Sym **locsymsp,
6583 unsigned long r_symndx,
6586 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6588 if (r_symndx >= symtab_hdr->sh_info)
6590 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6591 struct elf_link_hash_entry *h;
6593 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6594 h = elf_follow_link (h);
6602 if (symsecp != NULL)
6604 asection *symsec = NULL;
6605 if (h->root.type == bfd_link_hash_defined
6606 || h->root.type == bfd_link_hash_defweak)
6607 symsec = h->root.u.def.section;
6611 if (tls_maskp != NULL)
6613 struct ppc_link_hash_entry *eh;
6615 eh = (struct ppc_link_hash_entry *) h;
6616 *tls_maskp = &eh->tls_mask;
6621 Elf_Internal_Sym *sym;
6622 Elf_Internal_Sym *locsyms = *locsymsp;
6624 if (locsyms == NULL)
6626 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6627 if (locsyms == NULL)
6628 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6629 symtab_hdr->sh_info,
6630 0, NULL, NULL, NULL);
6631 if (locsyms == NULL)
6633 *locsymsp = locsyms;
6635 sym = locsyms + r_symndx;
6643 if (symsecp != NULL)
6644 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6646 if (tls_maskp != NULL)
6648 struct got_entry **lgot_ents;
6649 unsigned char *tls_mask;
6652 lgot_ents = elf_local_got_ents (ibfd);
6653 if (lgot_ents != NULL)
6655 struct plt_entry **local_plt = (struct plt_entry **)
6656 (lgot_ents + symtab_hdr->sh_info);
6657 unsigned char *lgot_masks = (unsigned char *)
6658 (local_plt + symtab_hdr->sh_info);
6659 tls_mask = &lgot_masks[r_symndx];
6661 *tls_maskp = tls_mask;
6667 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6668 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6669 type suitable for optimization, and 1 otherwise. */
6672 get_tls_mask (unsigned char **tls_maskp,
6673 unsigned long *toc_symndx,
6674 bfd_vma *toc_addend,
6675 Elf_Internal_Sym **locsymsp,
6676 const Elf_Internal_Rela *rel,
6679 unsigned long r_symndx;
6681 struct elf_link_hash_entry *h;
6682 Elf_Internal_Sym *sym;
6686 r_symndx = ELF64_R_SYM (rel->r_info);
6687 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6690 if ((*tls_maskp != NULL && **tls_maskp != 0)
6692 || ppc64_elf_section_data (sec) == NULL
6693 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6696 /* Look inside a TOC section too. */
6699 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6700 off = h->root.u.def.value;
6703 off = sym->st_value;
6704 off += rel->r_addend;
6705 BFD_ASSERT (off % 8 == 0);
6706 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6707 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6708 if (toc_symndx != NULL)
6709 *toc_symndx = r_symndx;
6710 if (toc_addend != NULL)
6711 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6712 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6714 if ((h == NULL || is_static_defined (h))
6715 && (next_r == -1 || next_r == -2))
6720 /* Adjust all global syms defined in opd sections. In gcc generated
6721 code for the old ABI, these will already have been done. */
6724 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6726 struct ppc_link_hash_entry *eh;
6728 struct _opd_sec_data *opd;
6730 if (h->root.type == bfd_link_hash_indirect)
6733 if (h->root.type == bfd_link_hash_warning)
6734 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6736 if (h->root.type != bfd_link_hash_defined
6737 && h->root.type != bfd_link_hash_defweak)
6740 eh = (struct ppc_link_hash_entry *) h;
6741 if (eh->adjust_done)
6744 sym_sec = eh->elf.root.u.def.section;
6745 opd = get_opd_info (sym_sec);
6746 if (opd != NULL && opd->adjust != NULL)
6748 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6751 /* This entry has been deleted. */
6752 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6755 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6756 if (elf_discarded_section (dsec))
6758 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6762 eh->elf.root.u.def.value = 0;
6763 eh->elf.root.u.def.section = dsec;
6766 eh->elf.root.u.def.value += adjust;
6767 eh->adjust_done = 1;
6772 /* Handles decrementing dynamic reloc counts for the reloc specified by
6773 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6774 have already been determined. */
6777 dec_dynrel_count (bfd_vma r_info,
6779 struct bfd_link_info *info,
6780 Elf_Internal_Sym **local_syms,
6781 struct elf_link_hash_entry *h,
6784 enum elf_ppc64_reloc_type r_type;
6785 struct ppc_dyn_relocs *p;
6786 struct ppc_dyn_relocs **pp;
6788 /* Can this reloc be dynamic? This switch, and later tests here
6789 should be kept in sync with the code in check_relocs. */
6790 r_type = ELF64_R_TYPE (r_info);
6796 case R_PPC64_TPREL16:
6797 case R_PPC64_TPREL16_LO:
6798 case R_PPC64_TPREL16_HI:
6799 case R_PPC64_TPREL16_HA:
6800 case R_PPC64_TPREL16_DS:
6801 case R_PPC64_TPREL16_LO_DS:
6802 case R_PPC64_TPREL16_HIGHER:
6803 case R_PPC64_TPREL16_HIGHERA:
6804 case R_PPC64_TPREL16_HIGHEST:
6805 case R_PPC64_TPREL16_HIGHESTA:
6809 case R_PPC64_TPREL64:
6810 case R_PPC64_DTPMOD64:
6811 case R_PPC64_DTPREL64:
6812 case R_PPC64_ADDR64:
6816 case R_PPC64_ADDR14:
6817 case R_PPC64_ADDR14_BRNTAKEN:
6818 case R_PPC64_ADDR14_BRTAKEN:
6819 case R_PPC64_ADDR16:
6820 case R_PPC64_ADDR16_DS:
6821 case R_PPC64_ADDR16_HA:
6822 case R_PPC64_ADDR16_HI:
6823 case R_PPC64_ADDR16_HIGHER:
6824 case R_PPC64_ADDR16_HIGHERA:
6825 case R_PPC64_ADDR16_HIGHEST:
6826 case R_PPC64_ADDR16_HIGHESTA:
6827 case R_PPC64_ADDR16_LO:
6828 case R_PPC64_ADDR16_LO_DS:
6829 case R_PPC64_ADDR24:
6830 case R_PPC64_ADDR32:
6831 case R_PPC64_UADDR16:
6832 case R_PPC64_UADDR32:
6833 case R_PPC64_UADDR64:
6838 if (local_syms != NULL)
6840 unsigned long r_symndx;
6841 Elf_Internal_Sym *sym;
6842 bfd *ibfd = sec->owner;
6844 r_symndx = ELF64_R_SYM (r_info);
6845 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6850 && (must_be_dyn_reloc (info, r_type)
6853 || h->root.type == bfd_link_hash_defweak
6854 || !h->def_regular))))
6855 || (ELIMINATE_COPY_RELOCS
6858 && (h->root.type == bfd_link_hash_defweak
6859 || !h->def_regular)))
6865 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6868 if (sym_sec != NULL)
6870 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6871 pp = (struct ppc_dyn_relocs **) vpp;
6875 void *vpp = &elf_section_data (sec)->local_dynrel;
6876 pp = (struct ppc_dyn_relocs **) vpp;
6879 /* elf_gc_sweep may have already removed all dyn relocs associated
6880 with local syms for a given section. Don't report a dynreloc
6886 while ((p = *pp) != NULL)
6890 if (!must_be_dyn_reloc (info, r_type))
6900 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6902 bfd_set_error (bfd_error_bad_value);
6906 /* Remove unused Official Procedure Descriptor entries. Currently we
6907 only remove those associated with functions in discarded link-once
6908 sections, or weakly defined functions that have been overridden. It
6909 would be possible to remove many more entries for statically linked
6913 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
6916 bfd_boolean some_edited = FALSE;
6917 asection *need_pad = NULL;
6919 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6922 Elf_Internal_Rela *relstart, *rel, *relend;
6923 Elf_Internal_Shdr *symtab_hdr;
6924 Elf_Internal_Sym *local_syms;
6926 struct _opd_sec_data *opd;
6927 bfd_boolean need_edit, add_aux_fields;
6928 bfd_size_type cnt_16b = 0;
6930 if (!is_ppc64_elf (ibfd))
6933 sec = bfd_get_section_by_name (ibfd, ".opd");
6934 if (sec == NULL || sec->size == 0)
6937 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6940 if (sec->output_section == bfd_abs_section_ptr)
6943 /* Look through the section relocs. */
6944 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6948 symtab_hdr = &elf_symtab_hdr (ibfd);
6950 /* Read the relocations. */
6951 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6953 if (relstart == NULL)
6956 /* First run through the relocs to check they are sane, and to
6957 determine whether we need to edit this opd section. */
6961 relend = relstart + sec->reloc_count;
6962 for (rel = relstart; rel < relend; )
6964 enum elf_ppc64_reloc_type r_type;
6965 unsigned long r_symndx;
6967 struct elf_link_hash_entry *h;
6968 Elf_Internal_Sym *sym;
6970 /* .opd contains a regular array of 16 or 24 byte entries. We're
6971 only interested in the reloc pointing to a function entry
6973 if (rel->r_offset != offset
6974 || rel + 1 >= relend
6975 || (rel + 1)->r_offset != offset + 8)
6977 /* If someone messes with .opd alignment then after a
6978 "ld -r" we might have padding in the middle of .opd.
6979 Also, there's nothing to prevent someone putting
6980 something silly in .opd with the assembler. No .opd
6981 optimization for them! */
6983 (*_bfd_error_handler)
6984 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6989 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6990 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6992 (*_bfd_error_handler)
6993 (_("%B: unexpected reloc type %u in .opd section"),
6999 r_symndx = ELF64_R_SYM (rel->r_info);
7000 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7004 if (sym_sec == NULL || sym_sec->owner == NULL)
7006 const char *sym_name;
7008 sym_name = h->root.root.string;
7010 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7013 (*_bfd_error_handler)
7014 (_("%B: undefined sym `%s' in .opd section"),
7020 /* opd entries are always for functions defined in the
7021 current input bfd. If the symbol isn't defined in the
7022 input bfd, then we won't be using the function in this
7023 bfd; It must be defined in a linkonce section in another
7024 bfd, or is weak. It's also possible that we are
7025 discarding the function due to a linker script /DISCARD/,
7026 which we test for via the output_section. */
7027 if (sym_sec->owner != ibfd
7028 || sym_sec->output_section == bfd_abs_section_ptr)
7033 || (rel + 1 == relend && rel->r_offset == offset + 16))
7035 if (sec->size == offset + 24)
7040 if (rel == relend && sec->size == offset + 16)
7048 if (rel->r_offset == offset + 24)
7050 else if (rel->r_offset != offset + 16)
7052 else if (rel + 1 < relend
7053 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7054 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7059 else if (rel + 2 < relend
7060 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7061 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7070 add_aux_fields = non_overlapping && cnt_16b > 0;
7072 if (need_edit || add_aux_fields)
7074 Elf_Internal_Rela *write_rel;
7075 bfd_byte *rptr, *wptr;
7076 bfd_byte *new_contents;
7081 new_contents = NULL;
7082 amt = sec->size * sizeof (long) / 8;
7083 opd = &ppc64_elf_section_data (sec)->u.opd;
7084 opd->adjust = bfd_zalloc (sec->owner, amt);
7085 if (opd->adjust == NULL)
7087 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7089 /* This seems a waste of time as input .opd sections are all
7090 zeros as generated by gcc, but I suppose there's no reason
7091 this will always be so. We might start putting something in
7092 the third word of .opd entries. */
7093 if ((sec->flags & SEC_IN_MEMORY) == 0)
7096 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7101 if (local_syms != NULL
7102 && symtab_hdr->contents != (unsigned char *) local_syms)
7104 if (elf_section_data (sec)->relocs != relstart)
7108 sec->contents = loc;
7109 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7112 elf_section_data (sec)->relocs = relstart;
7114 new_contents = sec->contents;
7117 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7118 if (new_contents == NULL)
7122 wptr = new_contents;
7123 rptr = sec->contents;
7125 write_rel = relstart;
7129 for (rel = relstart; rel < relend; rel++)
7131 unsigned long r_symndx;
7133 struct elf_link_hash_entry *h;
7134 Elf_Internal_Sym *sym;
7136 r_symndx = ELF64_R_SYM (rel->r_info);
7137 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7141 if (rel->r_offset == offset)
7143 struct ppc_link_hash_entry *fdh = NULL;
7145 /* See if the .opd entry is full 24 byte or
7146 16 byte (with fd_aux entry overlapped with next
7149 if ((rel + 2 == relend && sec->size == offset + 16)
7150 || (rel + 3 < relend
7151 && rel[2].r_offset == offset + 16
7152 && rel[3].r_offset == offset + 24
7153 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7154 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7158 && h->root.root.string[0] == '.')
7160 struct ppc_link_hash_table *htab;
7162 htab = ppc_hash_table (info);
7164 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7167 && fdh->elf.root.type != bfd_link_hash_defined
7168 && fdh->elf.root.type != bfd_link_hash_defweak)
7172 skip = (sym_sec->owner != ibfd
7173 || sym_sec->output_section == bfd_abs_section_ptr);
7176 if (fdh != NULL && sym_sec->owner == ibfd)
7178 /* Arrange for the function descriptor sym
7180 fdh->elf.root.u.def.value = 0;
7181 fdh->elf.root.u.def.section = sym_sec;
7183 opd->adjust[rel->r_offset / 8] = -1;
7187 /* We'll be keeping this opd entry. */
7191 /* Redefine the function descriptor symbol to
7192 this location in the opd section. It is
7193 necessary to update the value here rather
7194 than using an array of adjustments as we do
7195 for local symbols, because various places
7196 in the generic ELF code use the value
7197 stored in u.def.value. */
7198 fdh->elf.root.u.def.value = wptr - new_contents;
7199 fdh->adjust_done = 1;
7202 /* Local syms are a bit tricky. We could
7203 tweak them as they can be cached, but
7204 we'd need to look through the local syms
7205 for the function descriptor sym which we
7206 don't have at the moment. So keep an
7207 array of adjustments. */
7208 opd->adjust[rel->r_offset / 8]
7209 = (wptr - new_contents) - (rptr - sec->contents);
7212 memcpy (wptr, rptr, opd_ent_size);
7213 wptr += opd_ent_size;
7214 if (add_aux_fields && opd_ent_size == 16)
7216 memset (wptr, '\0', 8);
7220 rptr += opd_ent_size;
7221 offset += opd_ent_size;
7227 && !info->relocatable
7228 && !dec_dynrel_count (rel->r_info, sec, info,
7234 /* We need to adjust any reloc offsets to point to the
7235 new opd entries. While we're at it, we may as well
7236 remove redundant relocs. */
7237 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7238 if (write_rel != rel)
7239 memcpy (write_rel, rel, sizeof (*rel));
7244 sec->size = wptr - new_contents;
7245 sec->reloc_count = write_rel - relstart;
7248 free (sec->contents);
7249 sec->contents = new_contents;
7252 /* Fudge the header size too, as this is used later in
7253 elf_bfd_final_link if we are emitting relocs. */
7254 elf_section_data (sec)->rel_hdr.sh_size
7255 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
7256 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
7259 else if (elf_section_data (sec)->relocs != relstart)
7262 if (local_syms != NULL
7263 && symtab_hdr->contents != (unsigned char *) local_syms)
7265 if (!info->keep_memory)
7268 symtab_hdr->contents = (unsigned char *) local_syms;
7273 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7275 /* If we are doing a final link and the last .opd entry is just 16 byte
7276 long, add a 8 byte padding after it. */
7277 if (need_pad != NULL && !info->relocatable)
7281 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7283 BFD_ASSERT (need_pad->size > 0);
7285 p = bfd_malloc (need_pad->size + 8);
7289 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7290 p, 0, need_pad->size))
7293 need_pad->contents = p;
7294 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7298 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7302 need_pad->contents = p;
7305 memset (need_pad->contents + need_pad->size, 0, 8);
7306 need_pad->size += 8;
7312 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7315 ppc64_elf_tls_setup (struct bfd_link_info *info,
7316 int no_tls_get_addr_opt,
7319 struct ppc_link_hash_table *htab;
7321 htab = ppc_hash_table (info);
7326 htab->do_multi_toc = 0;
7327 else if (!htab->do_multi_toc)
7330 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7331 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7332 FALSE, FALSE, TRUE));
7333 /* Move dynamic linking info to the function descriptor sym. */
7334 if (htab->tls_get_addr != NULL)
7335 func_desc_adjust (&htab->tls_get_addr->elf, info);
7336 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7337 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7338 FALSE, FALSE, TRUE));
7339 if (!no_tls_get_addr_opt)
7341 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7343 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7344 FALSE, FALSE, TRUE);
7346 func_desc_adjust (opt, info);
7347 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7348 FALSE, FALSE, TRUE);
7350 && (opt_fd->root.type == bfd_link_hash_defined
7351 || opt_fd->root.type == bfd_link_hash_defweak))
7353 /* If glibc supports an optimized __tls_get_addr call stub,
7354 signalled by the presence of __tls_get_addr_opt, and we'll
7355 be calling __tls_get_addr via a plt call stub, then
7356 make __tls_get_addr point to __tls_get_addr_opt. */
7357 tga_fd = &htab->tls_get_addr_fd->elf;
7358 if (htab->elf.dynamic_sections_created
7360 && (tga_fd->type == STT_FUNC
7361 || tga_fd->needs_plt)
7362 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7363 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7364 && tga_fd->root.type == bfd_link_hash_undefweak)))
7366 struct plt_entry *ent;
7368 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7369 if (ent->plt.refcount > 0)
7373 tga_fd->root.type = bfd_link_hash_indirect;
7374 tga_fd->root.u.i.link = &opt_fd->root;
7375 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7376 if (opt_fd->dynindx != -1)
7378 /* Use __tls_get_addr_opt in dynamic relocations. */
7379 opt_fd->dynindx = -1;
7380 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7381 opt_fd->dynstr_index);
7382 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7385 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7386 tga = &htab->tls_get_addr->elf;
7387 if (opt != NULL && tga != NULL)
7389 tga->root.type = bfd_link_hash_indirect;
7390 tga->root.u.i.link = &opt->root;
7391 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7392 _bfd_elf_link_hash_hide_symbol (info, opt,
7394 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7396 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7397 htab->tls_get_addr_fd->is_func_descriptor = 1;
7398 if (htab->tls_get_addr != NULL)
7400 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7401 htab->tls_get_addr->is_func = 1;
7407 no_tls_get_addr_opt = TRUE;
7409 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7410 return _bfd_elf_tls_setup (info->output_bfd, info);
7413 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7417 branch_reloc_hash_match (const bfd *ibfd,
7418 const Elf_Internal_Rela *rel,
7419 const struct ppc_link_hash_entry *hash1,
7420 const struct ppc_link_hash_entry *hash2)
7422 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7423 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7424 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7426 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7428 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7429 struct elf_link_hash_entry *h;
7431 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7432 h = elf_follow_link (h);
7433 if (h == &hash1->elf || h == &hash2->elf)
7439 /* Run through all the TLS relocs looking for optimization
7440 opportunities. The linker has been hacked (see ppc64elf.em) to do
7441 a preliminary section layout so that we know the TLS segment
7442 offsets. We can't optimize earlier because some optimizations need
7443 to know the tp offset, and we need to optimize before allocating
7444 dynamic relocations. */
7447 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7451 struct ppc_link_hash_table *htab;
7454 if (info->relocatable || !info->executable)
7457 htab = ppc_hash_table (info);
7461 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7463 Elf_Internal_Sym *locsyms = NULL;
7464 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7465 unsigned char *toc_ref = NULL;
7467 /* Look at all the sections for this file. Make two passes over
7468 the relocs. On the first pass, mark toc entries involved
7469 with tls relocs, and check that tls relocs involved in
7470 setting up a tls_get_addr call are indeed followed by such a
7471 call. If they are not, exclude them from the optimizations
7472 done on the second pass. */
7473 for (pass = 0; pass < 2; ++pass)
7474 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7475 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7477 Elf_Internal_Rela *relstart, *rel, *relend;
7479 /* Read the relocations. */
7480 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7482 if (relstart == NULL)
7485 relend = relstart + sec->reloc_count;
7486 for (rel = relstart; rel < relend; rel++)
7488 enum elf_ppc64_reloc_type r_type;
7489 unsigned long r_symndx;
7490 struct elf_link_hash_entry *h;
7491 Elf_Internal_Sym *sym;
7493 unsigned char *tls_mask;
7494 unsigned char tls_set, tls_clear, tls_type = 0;
7496 bfd_boolean ok_tprel, is_local;
7497 long toc_ref_index = 0;
7498 int expecting_tls_get_addr = 0;
7500 r_symndx = ELF64_R_SYM (rel->r_info);
7501 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7505 if (elf_section_data (sec)->relocs != relstart)
7507 if (toc_ref != NULL)
7510 && (elf_symtab_hdr (ibfd).contents
7511 != (unsigned char *) locsyms))
7518 if (h->root.type == bfd_link_hash_defined
7519 || h->root.type == bfd_link_hash_defweak)
7520 value = h->root.u.def.value;
7521 else if (h->root.type == bfd_link_hash_undefweak)
7527 /* Symbols referenced by TLS relocs must be of type
7528 STT_TLS. So no need for .opd local sym adjust. */
7529 value = sym->st_value;
7538 && h->root.type == bfd_link_hash_undefweak)
7542 value += sym_sec->output_offset;
7543 value += sym_sec->output_section->vma;
7544 value -= htab->elf.tls_sec->vma;
7545 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7546 < (bfd_vma) 1 << 32);
7550 r_type = ELF64_R_TYPE (rel->r_info);
7553 case R_PPC64_GOT_TLSLD16:
7554 case R_PPC64_GOT_TLSLD16_LO:
7555 expecting_tls_get_addr = 1;
7558 case R_PPC64_GOT_TLSLD16_HI:
7559 case R_PPC64_GOT_TLSLD16_HA:
7560 /* These relocs should never be against a symbol
7561 defined in a shared lib. Leave them alone if
7562 that turns out to be the case. */
7569 tls_type = TLS_TLS | TLS_LD;
7572 case R_PPC64_GOT_TLSGD16:
7573 case R_PPC64_GOT_TLSGD16_LO:
7574 expecting_tls_get_addr = 1;
7577 case R_PPC64_GOT_TLSGD16_HI:
7578 case R_PPC64_GOT_TLSGD16_HA:
7584 tls_set = TLS_TLS | TLS_TPRELGD;
7586 tls_type = TLS_TLS | TLS_GD;
7589 case R_PPC64_GOT_TPREL16_DS:
7590 case R_PPC64_GOT_TPREL16_LO_DS:
7591 case R_PPC64_GOT_TPREL16_HI:
7592 case R_PPC64_GOT_TPREL16_HA:
7597 tls_clear = TLS_TPREL;
7598 tls_type = TLS_TLS | TLS_TPREL;
7604 case R_PPC64_TOC16_LO:
7608 if (sym_sec == NULL || sym_sec != toc)
7611 /* Mark this toc entry as referenced by a TLS
7612 code sequence. We can do that now in the
7613 case of R_PPC64_TLS, and after checking for
7614 tls_get_addr for the TOC16 relocs. */
7615 if (toc_ref == NULL)
7617 toc_ref = bfd_zmalloc (toc->size / 8);
7618 if (toc_ref == NULL)
7622 value = h->root.u.def.value;
7624 value = sym->st_value;
7625 value += rel->r_addend;
7626 BFD_ASSERT (value < toc->size && value % 8 == 0);
7627 toc_ref_index = value / 8;
7628 if (r_type == R_PPC64_TLS
7629 || r_type == R_PPC64_TLSGD
7630 || r_type == R_PPC64_TLSLD)
7632 toc_ref[toc_ref_index] = 1;
7636 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7641 expecting_tls_get_addr = 2;
7644 case R_PPC64_TPREL64:
7648 || !toc_ref[rel->r_offset / 8])
7653 tls_set = TLS_EXPLICIT;
7654 tls_clear = TLS_TPREL;
7659 case R_PPC64_DTPMOD64:
7663 || !toc_ref[rel->r_offset / 8])
7665 if (rel + 1 < relend
7667 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7668 && rel[1].r_offset == rel->r_offset + 8)
7672 tls_set = TLS_EXPLICIT | TLS_GD;
7675 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7684 tls_set = TLS_EXPLICIT;
7695 if (!expecting_tls_get_addr
7696 || !sec->has_tls_get_addr_call)
7699 if (rel + 1 < relend
7700 && branch_reloc_hash_match (ibfd, rel + 1,
7702 htab->tls_get_addr_fd))
7704 if (expecting_tls_get_addr == 2)
7706 /* Check for toc tls entries. */
7707 unsigned char *toc_tls;
7710 retval = get_tls_mask (&toc_tls, NULL, NULL,
7715 if (retval > 1 && toc_tls != NULL)
7716 toc_ref[toc_ref_index] = 1;
7721 if (expecting_tls_get_addr != 1)
7724 /* Uh oh, we didn't find the expected call. We
7725 could just mark this symbol to exclude it
7726 from tls optimization but it's safer to skip
7727 the entire section. */
7728 sec->has_tls_reloc = 0;
7732 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7734 struct plt_entry *ent;
7735 for (ent = htab->tls_get_addr->elf.plt.plist;
7738 if (ent->addend == 0)
7740 if (ent->plt.refcount > 0)
7742 ent->plt.refcount -= 1;
7743 expecting_tls_get_addr = 0;
7749 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7751 struct plt_entry *ent;
7752 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7755 if (ent->addend == 0)
7757 if (ent->plt.refcount > 0)
7758 ent->plt.refcount -= 1;
7766 if ((tls_set & TLS_EXPLICIT) == 0)
7768 struct got_entry *ent;
7770 /* Adjust got entry for this reloc. */
7774 ent = elf_local_got_ents (ibfd)[r_symndx];
7776 for (; ent != NULL; ent = ent->next)
7777 if (ent->addend == rel->r_addend
7778 && ent->owner == ibfd
7779 && ent->tls_type == tls_type)
7786 /* We managed to get rid of a got entry. */
7787 if (ent->got.refcount > 0)
7788 ent->got.refcount -= 1;
7793 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7794 we'll lose one or two dyn relocs. */
7795 if (!dec_dynrel_count (rel->r_info, sec, info,
7799 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7801 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7807 *tls_mask |= tls_set;
7808 *tls_mask &= ~tls_clear;
7811 if (elf_section_data (sec)->relocs != relstart)
7815 if (toc_ref != NULL)
7819 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7821 if (!info->keep_memory)
7824 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7830 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7831 the values of any global symbols in a toc section that has been
7832 edited. Globals in toc sections should be a rarity, so this function
7833 sets a flag if any are found in toc sections other than the one just
7834 edited, so that futher hash table traversals can be avoided. */
7836 struct adjust_toc_info
7839 unsigned long *skip;
7840 bfd_boolean global_toc_syms;
7843 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
7846 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7848 struct ppc_link_hash_entry *eh;
7849 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7852 if (h->root.type == bfd_link_hash_indirect)
7855 if (h->root.type == bfd_link_hash_warning)
7856 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7858 if (h->root.type != bfd_link_hash_defined
7859 && h->root.type != bfd_link_hash_defweak)
7862 eh = (struct ppc_link_hash_entry *) h;
7863 if (eh->adjust_done)
7866 if (eh->elf.root.u.def.section == toc_inf->toc)
7868 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
7869 i = toc_inf->toc->rawsize >> 3;
7871 i = eh->elf.root.u.def.value >> 3;
7873 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
7875 (*_bfd_error_handler)
7876 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
7879 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
7880 eh->elf.root.u.def.value = (bfd_vma) i << 3;
7883 eh->elf.root.u.def.value -= toc_inf->skip[i];
7884 eh->adjust_done = 1;
7886 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7887 toc_inf->global_toc_syms = TRUE;
7892 /* Examine all relocs referencing .toc sections in order to remove
7893 unused .toc entries. */
7896 ppc64_elf_edit_toc (struct bfd_link_info *info)
7899 struct adjust_toc_info toc_inf;
7900 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7902 htab->do_toc_opt = 1;
7903 toc_inf.global_toc_syms = TRUE;
7904 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7906 asection *toc, *sec;
7907 Elf_Internal_Shdr *symtab_hdr;
7908 Elf_Internal_Sym *local_syms;
7909 Elf_Internal_Rela *relstart, *rel;
7910 unsigned long *skip, *drop;
7911 unsigned char *used;
7912 unsigned char *keep, last, some_unused;
7914 if (!is_ppc64_elf (ibfd))
7917 toc = bfd_get_section_by_name (ibfd, ".toc");
7920 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7921 || elf_discarded_section (toc))
7925 symtab_hdr = &elf_symtab_hdr (ibfd);
7927 /* Look at sections dropped from the final link. */
7930 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7932 if (sec->reloc_count == 0
7933 || !elf_discarded_section (sec)
7934 || get_opd_info (sec)
7935 || (sec->flags & SEC_ALLOC) == 0
7936 || (sec->flags & SEC_DEBUGGING) != 0)
7939 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7940 if (relstart == NULL)
7943 /* Run through the relocs to see which toc entries might be
7945 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7947 enum elf_ppc64_reloc_type r_type;
7948 unsigned long r_symndx;
7950 struct elf_link_hash_entry *h;
7951 Elf_Internal_Sym *sym;
7954 r_type = ELF64_R_TYPE (rel->r_info);
7961 case R_PPC64_TOC16_LO:
7962 case R_PPC64_TOC16_HI:
7963 case R_PPC64_TOC16_HA:
7964 case R_PPC64_TOC16_DS:
7965 case R_PPC64_TOC16_LO_DS:
7969 r_symndx = ELF64_R_SYM (rel->r_info);
7970 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7978 val = h->root.u.def.value;
7980 val = sym->st_value;
7981 val += rel->r_addend;
7983 if (val >= toc->size)
7986 /* Anything in the toc ought to be aligned to 8 bytes.
7987 If not, don't mark as unused. */
7993 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
7998 skip[val >> 3] = ref_from_discarded;
8001 if (elf_section_data (sec)->relocs != relstart)
8005 /* For largetoc loads of address constants, we can convert
8006 . addis rx,2,addr@got@ha
8007 . ld ry,addr@got@l(rx)
8009 . addis rx,2,addr@toc@ha
8010 . addi ry,rx,addr@toc@l
8011 when addr is within 2G of the toc pointer. This then means
8012 that the word storing "addr" in the toc is no longer needed. */
8014 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8015 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8016 && toc->reloc_count != 0)
8018 /* Read toc relocs. */
8019 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8021 if (relstart == NULL)
8024 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
8026 enum elf_ppc64_reloc_type r_type;
8027 unsigned long r_symndx;
8029 struct elf_link_hash_entry *h;
8030 Elf_Internal_Sym *sym;
8033 r_type = ELF64_R_TYPE (rel->r_info);
8034 if (r_type != R_PPC64_ADDR64)
8037 r_symndx = ELF64_R_SYM (rel->r_info);
8038 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8042 if (!SYMBOL_CALLS_LOCAL (info, h))
8047 if (h->type == STT_GNU_IFUNC)
8049 val = h->root.u.def.value;
8053 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8055 val = sym->st_value;
8057 val += rel->r_addend;
8058 val += sym_sec->output_section->vma + sym_sec->output_offset;
8060 /* We don't yet know the exact toc pointer value, but we
8061 know it will be somewhere in the toc section. Don't
8062 optimize if the difference from any possible toc
8063 pointer is outside [ff..f80008000, 7fff7fff]. */
8064 addr = toc->output_section->vma + TOC_BASE_OFF;
8065 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8068 addr = toc->output_section->vma + toc->output_section->rawsize;
8069 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8074 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8079 skip[rel->r_offset >> 3]
8080 |= can_optimize | ((rel - relstart) << 2);
8083 if (elf_section_data (toc)->relocs != relstart)
8090 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8094 if (local_syms != NULL
8095 && symtab_hdr->contents != (unsigned char *) local_syms)
8099 && elf_section_data (sec)->relocs != relstart)
8106 /* Now check all kept sections that might reference the toc.
8107 Check the toc itself last. */
8108 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8111 sec = (sec == toc ? NULL
8112 : sec->next == NULL ? toc
8113 : sec->next == toc && toc->next ? toc->next
8118 if (sec->reloc_count == 0
8119 || elf_discarded_section (sec)
8120 || get_opd_info (sec)
8121 || (sec->flags & SEC_ALLOC) == 0
8122 || (sec->flags & SEC_DEBUGGING) != 0)
8125 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8127 if (relstart == NULL)
8130 /* Mark toc entries referenced as used. */
8133 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8135 enum elf_ppc64_reloc_type r_type;
8136 unsigned long r_symndx;
8138 struct elf_link_hash_entry *h;
8139 Elf_Internal_Sym *sym;
8142 r_type = ELF64_R_TYPE (rel->r_info);
8146 case R_PPC64_TOC16_LO:
8147 case R_PPC64_TOC16_HI:
8148 case R_PPC64_TOC16_HA:
8149 case R_PPC64_TOC16_DS:
8150 case R_PPC64_TOC16_LO_DS:
8151 /* In case we're taking addresses of toc entries. */
8152 case R_PPC64_ADDR64:
8159 r_symndx = ELF64_R_SYM (rel->r_info);
8160 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8171 val = h->root.u.def.value;
8173 val = sym->st_value;
8174 val += rel->r_addend;
8176 if (val >= toc->size)
8179 if ((skip[val >> 3] & can_optimize) != 0)
8186 case R_PPC64_TOC16_HA:
8189 case R_PPC64_TOC16_LO_DS:
8190 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8191 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
8193 if ((opc & (0x3f << 2)) == (58u << 2))
8198 /* Wrong sort of reloc, or not a ld. We may
8199 as well clear ref_from_discarded too. */
8204 /* For the toc section, we only mark as used if
8205 this entry itself isn't unused. */
8208 && (used[rel->r_offset >> 3]
8209 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
8210 /* Do all the relocs again, to catch reference
8218 if (elf_section_data (sec)->relocs != relstart)
8222 /* Merge the used and skip arrays. Assume that TOC
8223 doublewords not appearing as either used or unused belong
8224 to to an entry more than one doubleword in size. */
8225 for (drop = skip, keep = used, last = 0, some_unused = 0;
8226 drop < skip + (toc->size + 7) / 8;
8231 *drop &= ~ref_from_discarded;
8232 if ((*drop & can_optimize) != 0)
8239 last = ref_from_discarded;
8249 bfd_byte *contents, *src;
8251 Elf_Internal_Sym *sym;
8252 bfd_boolean local_toc_syms = FALSE;
8254 /* Shuffle the toc contents, and at the same time convert the
8255 skip array from booleans into offsets. */
8256 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8259 elf_section_data (toc)->this_hdr.contents = contents;
8261 for (src = contents, off = 0, drop = skip;
8262 src < contents + toc->size;
8265 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8270 memcpy (src - off, src, 8);
8274 toc->rawsize = toc->size;
8275 toc->size = src - contents - off;
8277 /* Adjust addends for relocs against the toc section sym,
8278 and optimize any accesses we can. */
8279 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8281 if (sec->reloc_count == 0
8282 || elf_discarded_section (sec))
8285 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8287 if (relstart == NULL)
8290 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8292 enum elf_ppc64_reloc_type r_type;
8293 unsigned long r_symndx;
8295 struct elf_link_hash_entry *h;
8298 r_type = ELF64_R_TYPE (rel->r_info);
8305 case R_PPC64_TOC16_LO:
8306 case R_PPC64_TOC16_HI:
8307 case R_PPC64_TOC16_HA:
8308 case R_PPC64_TOC16_DS:
8309 case R_PPC64_TOC16_LO_DS:
8310 case R_PPC64_ADDR64:
8314 r_symndx = ELF64_R_SYM (rel->r_info);
8315 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8323 val = h->root.u.def.value;
8326 val = sym->st_value;
8328 local_toc_syms = TRUE;
8331 val += rel->r_addend;
8333 if (val > toc->rawsize)
8335 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8337 else if ((skip[val >> 3] & can_optimize) != 0)
8339 Elf_Internal_Rela *tocrel
8340 = elf_section_data (toc)->relocs + (skip[val >> 3] >> 2);
8341 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8345 case R_PPC64_TOC16_HA:
8346 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8349 case R_PPC64_TOC16_LO_DS:
8350 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8356 rel->r_addend = tocrel->r_addend;
8357 elf_section_data (sec)->relocs = relstart;
8361 if (h != NULL || sym->st_value != 0)
8364 rel->r_addend -= skip[val >> 3];
8365 elf_section_data (sec)->relocs = relstart;
8368 if (elf_section_data (sec)->relocs != relstart)
8372 /* We shouldn't have local or global symbols defined in the TOC,
8373 but handle them anyway. */
8374 for (sym = local_syms;
8375 sym < local_syms + symtab_hdr->sh_info;
8377 if (sym->st_value != 0
8378 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8382 if (sym->st_value > toc->rawsize)
8383 i = toc->rawsize >> 3;
8385 i = sym->st_value >> 3;
8387 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8390 (*_bfd_error_handler)
8391 (_("%s defined on removed toc entry"),
8392 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8395 while ((skip[i] & (ref_from_discarded | can_optimize)));
8396 sym->st_value = (bfd_vma) i << 3;
8399 sym->st_value -= skip[i];
8400 symtab_hdr->contents = (unsigned char *) local_syms;
8403 /* Adjust any global syms defined in this toc input section. */
8404 if (toc_inf.global_toc_syms)
8407 toc_inf.skip = skip;
8408 toc_inf.global_toc_syms = FALSE;
8409 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8413 if (toc->reloc_count != 0)
8415 Elf_Internal_Rela *wrel;
8418 /* Read toc relocs. */
8419 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8421 if (relstart == NULL)
8424 /* Remove unused toc relocs, and adjust those we keep. */
8426 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
8427 if ((skip[rel->r_offset >> 3]
8428 & (ref_from_discarded | can_optimize)) == 0)
8430 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8431 wrel->r_info = rel->r_info;
8432 wrel->r_addend = rel->r_addend;
8435 else if (!dec_dynrel_count (rel->r_info, toc, info,
8436 &local_syms, NULL, NULL))
8439 toc->reloc_count = wrel - relstart;
8440 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
8441 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
8442 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
8446 if (local_syms != NULL
8447 && symtab_hdr->contents != (unsigned char *) local_syms)
8449 if (!info->keep_memory)
8452 symtab_hdr->contents = (unsigned char *) local_syms;
8460 /* Return true iff input section I references the TOC using
8461 instructions limited to +/-32k offsets. */
8464 ppc64_elf_has_small_toc_reloc (asection *i)
8466 return (is_ppc64_elf (i->owner)
8467 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8470 /* Allocate space for one GOT entry. */
8473 allocate_got (struct elf_link_hash_entry *h,
8474 struct bfd_link_info *info,
8475 struct got_entry *gent)
8477 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8479 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8480 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8482 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8483 ? 2 : 1) * sizeof (Elf64_External_Rela);
8484 asection *got = ppc64_elf_tdata (gent->owner)->got;
8486 gent->got.offset = got->size;
8487 got->size += entsize;
8489 dyn = htab->elf.dynamic_sections_created;
8491 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8492 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8493 || h->root.type != bfd_link_hash_undefweak))
8495 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8496 relgot->size += rentsize;
8498 else if (h->type == STT_GNU_IFUNC)
8500 asection *relgot = htab->reliplt;
8501 relgot->size += rentsize;
8502 htab->got_reli_size += rentsize;
8506 /* This function merges got entries in the same toc group. */
8509 merge_got_entries (struct got_entry **pent)
8511 struct got_entry *ent, *ent2;
8513 for (ent = *pent; ent != NULL; ent = ent->next)
8514 if (!ent->is_indirect)
8515 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8516 if (!ent2->is_indirect
8517 && ent2->addend == ent->addend
8518 && ent2->tls_type == ent->tls_type
8519 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8521 ent2->is_indirect = TRUE;
8522 ent2->got.ent = ent;
8526 /* Allocate space in .plt, .got and associated reloc sections for
8530 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8532 struct bfd_link_info *info;
8533 struct ppc_link_hash_table *htab;
8535 struct ppc_link_hash_entry *eh;
8536 struct ppc_dyn_relocs *p;
8537 struct got_entry **pgent, *gent;
8539 if (h->root.type == bfd_link_hash_indirect)
8542 if (h->root.type == bfd_link_hash_warning)
8543 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8545 info = (struct bfd_link_info *) inf;
8546 htab = ppc_hash_table (info);
8550 if ((htab->elf.dynamic_sections_created
8552 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8553 || h->type == STT_GNU_IFUNC)
8555 struct plt_entry *pent;
8556 bfd_boolean doneone = FALSE;
8557 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8558 if (pent->plt.refcount > 0)
8560 if (!htab->elf.dynamic_sections_created
8561 || h->dynindx == -1)
8564 pent->plt.offset = s->size;
8565 s->size += PLT_ENTRY_SIZE;
8570 /* If this is the first .plt entry, make room for the special
8574 s->size += PLT_INITIAL_ENTRY_SIZE;
8576 pent->plt.offset = s->size;
8578 /* Make room for this entry. */
8579 s->size += PLT_ENTRY_SIZE;
8581 /* Make room for the .glink code. */
8584 s->size += GLINK_CALL_STUB_SIZE;
8585 /* We need bigger stubs past index 32767. */
8586 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8590 /* We also need to make an entry in the .rela.plt section. */
8593 s->size += sizeof (Elf64_External_Rela);
8597 pent->plt.offset = (bfd_vma) -1;
8600 h->plt.plist = NULL;
8606 h->plt.plist = NULL;
8610 eh = (struct ppc_link_hash_entry *) h;
8611 /* Run through the TLS GD got entries first if we're changing them
8613 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8614 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8615 if (gent->got.refcount > 0
8616 && (gent->tls_type & TLS_GD) != 0)
8618 /* This was a GD entry that has been converted to TPREL. If
8619 there happens to be a TPREL entry we can use that one. */
8620 struct got_entry *ent;
8621 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8622 if (ent->got.refcount > 0
8623 && (ent->tls_type & TLS_TPREL) != 0
8624 && ent->addend == gent->addend
8625 && ent->owner == gent->owner)
8627 gent->got.refcount = 0;
8631 /* If not, then we'll be using our own TPREL entry. */
8632 if (gent->got.refcount != 0)
8633 gent->tls_type = TLS_TLS | TLS_TPREL;
8636 /* Remove any list entry that won't generate a word in the GOT before
8637 we call merge_got_entries. Otherwise we risk merging to empty
8639 pgent = &h->got.glist;
8640 while ((gent = *pgent) != NULL)
8641 if (gent->got.refcount > 0)
8643 if ((gent->tls_type & TLS_LD) != 0
8646 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8647 *pgent = gent->next;
8650 pgent = &gent->next;
8653 *pgent = gent->next;
8655 if (!htab->do_multi_toc)
8656 merge_got_entries (&h->got.glist);
8658 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8659 if (!gent->is_indirect)
8661 /* Make sure this symbol is output as a dynamic symbol.
8662 Undefined weak syms won't yet be marked as dynamic,
8663 nor will all TLS symbols. */
8664 if (h->dynindx == -1
8666 && h->type != STT_GNU_IFUNC
8667 && htab->elf.dynamic_sections_created)
8669 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8673 if (!is_ppc64_elf (gent->owner))
8676 allocate_got (h, info, gent);
8679 if (eh->dyn_relocs == NULL
8680 || (!htab->elf.dynamic_sections_created
8681 && h->type != STT_GNU_IFUNC))
8684 /* In the shared -Bsymbolic case, discard space allocated for
8685 dynamic pc-relative relocs against symbols which turn out to be
8686 defined in regular objects. For the normal shared case, discard
8687 space for relocs that have become local due to symbol visibility
8692 /* Relocs that use pc_count are those that appear on a call insn,
8693 or certain REL relocs (see must_be_dyn_reloc) that can be
8694 generated via assembly. We want calls to protected symbols to
8695 resolve directly to the function rather than going via the plt.
8696 If people want function pointer comparisons to work as expected
8697 then they should avoid writing weird assembly. */
8698 if (SYMBOL_CALLS_LOCAL (info, h))
8700 struct ppc_dyn_relocs **pp;
8702 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8704 p->count -= p->pc_count;
8713 /* Also discard relocs on undefined weak syms with non-default
8715 if (eh->dyn_relocs != NULL
8716 && h->root.type == bfd_link_hash_undefweak)
8718 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8719 eh->dyn_relocs = NULL;
8721 /* Make sure this symbol is output as a dynamic symbol.
8722 Undefined weak syms won't yet be marked as dynamic. */
8723 else if (h->dynindx == -1
8724 && !h->forced_local)
8726 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8731 else if (h->type == STT_GNU_IFUNC)
8733 if (!h->non_got_ref)
8734 eh->dyn_relocs = NULL;
8736 else if (ELIMINATE_COPY_RELOCS)
8738 /* For the non-shared case, discard space for relocs against
8739 symbols which turn out to need copy relocs or are not
8745 /* Make sure this symbol is output as a dynamic symbol.
8746 Undefined weak syms won't yet be marked as dynamic. */
8747 if (h->dynindx == -1
8748 && !h->forced_local)
8750 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8754 /* If that succeeded, we know we'll be keeping all the
8756 if (h->dynindx != -1)
8760 eh->dyn_relocs = NULL;
8765 /* Finally, allocate space. */
8766 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8768 asection *sreloc = elf_section_data (p->sec)->sreloc;
8769 if (!htab->elf.dynamic_sections_created)
8770 sreloc = htab->reliplt;
8771 sreloc->size += p->count * sizeof (Elf64_External_Rela);
8777 /* Find any dynamic relocs that apply to read-only sections. */
8780 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8782 struct ppc_link_hash_entry *eh;
8783 struct ppc_dyn_relocs *p;
8785 if (h->root.type == bfd_link_hash_warning)
8786 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8788 eh = (struct ppc_link_hash_entry *) h;
8789 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8791 asection *s = p->sec->output_section;
8793 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8795 struct bfd_link_info *info = inf;
8797 info->flags |= DF_TEXTREL;
8799 /* Not an error, just cut short the traversal. */
8806 /* Set the sizes of the dynamic sections. */
8809 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8810 struct bfd_link_info *info)
8812 struct ppc_link_hash_table *htab;
8817 struct got_entry *first_tlsld;
8819 htab = ppc_hash_table (info);
8823 dynobj = htab->elf.dynobj;
8827 if (htab->elf.dynamic_sections_created)
8829 /* Set the contents of the .interp section to the interpreter. */
8830 if (info->executable)
8832 s = bfd_get_section_by_name (dynobj, ".interp");
8835 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8836 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8840 /* Set up .got offsets for local syms, and space for local dynamic
8842 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8844 struct got_entry **lgot_ents;
8845 struct got_entry **end_lgot_ents;
8846 struct plt_entry **local_plt;
8847 struct plt_entry **end_local_plt;
8848 unsigned char *lgot_masks;
8849 bfd_size_type locsymcount;
8850 Elf_Internal_Shdr *symtab_hdr;
8853 if (!is_ppc64_elf (ibfd))
8856 for (s = ibfd->sections; s != NULL; s = s->next)
8858 struct ppc_dyn_relocs *p;
8860 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8862 if (!bfd_is_abs_section (p->sec)
8863 && bfd_is_abs_section (p->sec->output_section))
8865 /* Input section has been discarded, either because
8866 it is a copy of a linkonce section or due to
8867 linker script /DISCARD/, so we'll be discarding
8870 else if (p->count != 0)
8872 srel = elf_section_data (p->sec)->sreloc;
8873 if (!htab->elf.dynamic_sections_created)
8874 srel = htab->reliplt;
8875 srel->size += p->count * sizeof (Elf64_External_Rela);
8876 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8877 info->flags |= DF_TEXTREL;
8882 lgot_ents = elf_local_got_ents (ibfd);
8886 symtab_hdr = &elf_symtab_hdr (ibfd);
8887 locsymcount = symtab_hdr->sh_info;
8888 end_lgot_ents = lgot_ents + locsymcount;
8889 local_plt = (struct plt_entry **) end_lgot_ents;
8890 end_local_plt = local_plt + locsymcount;
8891 lgot_masks = (unsigned char *) end_local_plt;
8892 s = ppc64_elf_tdata (ibfd)->got;
8893 srel = ppc64_elf_tdata (ibfd)->relgot;
8894 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
8896 struct got_entry **pent, *ent;
8899 while ((ent = *pent) != NULL)
8900 if (ent->got.refcount > 0)
8902 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
8904 ppc64_tlsld_got (ibfd)->got.refcount += 1;
8909 unsigned int num = 1;
8910 ent->got.offset = s->size;
8911 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
8915 srel->size += num * sizeof (Elf64_External_Rela);
8916 else if ((*lgot_masks & PLT_IFUNC) != 0)
8919 += num * sizeof (Elf64_External_Rela);
8921 += num * sizeof (Elf64_External_Rela);
8930 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8931 for (; local_plt < end_local_plt; ++local_plt)
8933 struct plt_entry *ent;
8935 for (ent = *local_plt; ent != NULL; ent = ent->next)
8936 if (ent->plt.refcount > 0)
8939 ent->plt.offset = s->size;
8940 s->size += PLT_ENTRY_SIZE;
8942 htab->reliplt->size += sizeof (Elf64_External_Rela);
8945 ent->plt.offset = (bfd_vma) -1;
8949 /* Allocate global sym .plt and .got entries, and space for global
8950 sym dynamic relocs. */
8951 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
8954 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8956 struct got_entry *ent;
8958 if (!is_ppc64_elf (ibfd))
8961 ent = ppc64_tlsld_got (ibfd);
8962 if (ent->got.refcount > 0)
8964 if (!htab->do_multi_toc && first_tlsld != NULL)
8966 ent->is_indirect = TRUE;
8967 ent->got.ent = first_tlsld;
8971 if (first_tlsld == NULL)
8973 s = ppc64_elf_tdata (ibfd)->got;
8974 ent->got.offset = s->size;
8979 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
8980 srel->size += sizeof (Elf64_External_Rela);
8985 ent->got.offset = (bfd_vma) -1;
8988 /* We now have determined the sizes of the various dynamic sections.
8989 Allocate memory for them. */
8991 for (s = dynobj->sections; s != NULL; s = s->next)
8993 if ((s->flags & SEC_LINKER_CREATED) == 0)
8996 if (s == htab->brlt || s == htab->relbrlt)
8997 /* These haven't been allocated yet; don't strip. */
8999 else if (s == htab->got
9003 || s == htab->dynbss)
9005 /* Strip this section if we don't need it; see the
9008 else if (CONST_STRNEQ (s->name, ".rela"))
9012 if (s != htab->relplt)
9015 /* We use the reloc_count field as a counter if we need
9016 to copy relocs into the output file. */
9022 /* It's not one of our sections, so don't allocate space. */
9028 /* If we don't need this section, strip it from the
9029 output file. This is mostly to handle .rela.bss and
9030 .rela.plt. We must create both sections in
9031 create_dynamic_sections, because they must be created
9032 before the linker maps input sections to output
9033 sections. The linker does that before
9034 adjust_dynamic_symbol is called, and it is that
9035 function which decides whether anything needs to go
9036 into these sections. */
9037 s->flags |= SEC_EXCLUDE;
9041 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9044 /* Allocate memory for the section contents. We use bfd_zalloc
9045 here in case unused entries are not reclaimed before the
9046 section's contents are written out. This should not happen,
9047 but this way if it does we get a R_PPC64_NONE reloc in .rela
9048 sections instead of garbage.
9049 We also rely on the section contents being zero when writing
9051 s->contents = bfd_zalloc (dynobj, s->size);
9052 if (s->contents == NULL)
9056 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9058 if (!is_ppc64_elf (ibfd))
9061 s = ppc64_elf_tdata (ibfd)->got;
9062 if (s != NULL && s != htab->got)
9065 s->flags |= SEC_EXCLUDE;
9068 s->contents = bfd_zalloc (ibfd, s->size);
9069 if (s->contents == NULL)
9073 s = ppc64_elf_tdata (ibfd)->relgot;
9077 s->flags |= SEC_EXCLUDE;
9080 s->contents = bfd_zalloc (ibfd, s->size);
9081 if (s->contents == NULL)
9089 if (htab->elf.dynamic_sections_created)
9091 /* Add some entries to the .dynamic section. We fill in the
9092 values later, in ppc64_elf_finish_dynamic_sections, but we
9093 must add the entries now so that we get the correct size for
9094 the .dynamic section. The DT_DEBUG entry is filled in by the
9095 dynamic linker and used by the debugger. */
9096 #define add_dynamic_entry(TAG, VAL) \
9097 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9099 if (info->executable)
9101 if (!add_dynamic_entry (DT_DEBUG, 0))
9105 if (htab->plt != NULL && htab->plt->size != 0)
9107 if (!add_dynamic_entry (DT_PLTGOT, 0)
9108 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9109 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9110 || !add_dynamic_entry (DT_JMPREL, 0)
9111 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9117 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9118 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9122 if (!htab->no_tls_get_addr_opt
9123 && htab->tls_get_addr_fd != NULL
9124 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9125 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9130 if (!add_dynamic_entry (DT_RELA, 0)
9131 || !add_dynamic_entry (DT_RELASZ, 0)
9132 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9135 /* If any dynamic relocs apply to a read-only section,
9136 then we need a DT_TEXTREL entry. */
9137 if ((info->flags & DF_TEXTREL) == 0)
9138 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9140 if ((info->flags & DF_TEXTREL) != 0)
9142 if (!add_dynamic_entry (DT_TEXTREL, 0))
9147 #undef add_dynamic_entry
9152 /* Determine the type of stub needed, if any, for a call. */
9154 static inline enum ppc_stub_type
9155 ppc_type_of_stub (asection *input_sec,
9156 const Elf_Internal_Rela *rel,
9157 struct ppc_link_hash_entry **hash,
9158 struct plt_entry **plt_ent,
9159 bfd_vma destination)
9161 struct ppc_link_hash_entry *h = *hash;
9163 bfd_vma branch_offset;
9164 bfd_vma max_branch_offset;
9165 enum elf_ppc64_reloc_type r_type;
9169 struct plt_entry *ent;
9170 struct ppc_link_hash_entry *fdh = h;
9172 && h->oh->is_func_descriptor)
9174 fdh = ppc_follow_link (h->oh);
9178 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9179 if (ent->addend == rel->r_addend
9180 && ent->plt.offset != (bfd_vma) -1)
9183 return ppc_stub_plt_call;
9186 /* Here, we know we don't have a plt entry. If we don't have a
9187 either a defined function descriptor or a defined entry symbol
9188 in a regular object file, then it is pointless trying to make
9189 any other type of stub. */
9190 if (!is_static_defined (&fdh->elf)
9191 && !is_static_defined (&h->elf))
9192 return ppc_stub_none;
9194 else if (elf_local_got_ents (input_sec->owner) != NULL)
9196 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9197 struct plt_entry **local_plt = (struct plt_entry **)
9198 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9199 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9201 if (local_plt[r_symndx] != NULL)
9203 struct plt_entry *ent;
9205 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9206 if (ent->addend == rel->r_addend
9207 && ent->plt.offset != (bfd_vma) -1)
9210 return ppc_stub_plt_call;
9215 /* Determine where the call point is. */
9216 location = (input_sec->output_offset
9217 + input_sec->output_section->vma
9220 branch_offset = destination - location;
9221 r_type = ELF64_R_TYPE (rel->r_info);
9223 /* Determine if a long branch stub is needed. */
9224 max_branch_offset = 1 << 25;
9225 if (r_type != R_PPC64_REL24)
9226 max_branch_offset = 1 << 15;
9228 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9229 /* We need a stub. Figure out whether a long_branch or plt_branch
9231 return ppc_stub_long_branch;
9233 return ppc_stub_none;
9236 /* Build a .plt call stub. */
9238 static inline bfd_byte *
9239 build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
9241 #define PPC_LO(v) ((v) & 0xffff)
9242 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9243 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9245 if (PPC_HA (offset) != 0)
9249 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9250 r[1].r_offset = r[0].r_offset + 8;
9251 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9252 r[1].r_addend = r[0].r_addend;
9253 if (PPC_HA (offset + 16) != PPC_HA (offset))
9255 r[2].r_offset = r[1].r_offset + 4;
9256 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9257 r[2].r_addend = r[0].r_addend;
9261 r[2].r_offset = r[1].r_offset + 8;
9262 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9263 r[2].r_addend = r[0].r_addend + 8;
9264 r[3].r_offset = r[2].r_offset + 4;
9265 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9266 r[3].r_addend = r[0].r_addend + 16;
9269 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9270 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9271 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9272 if (PPC_HA (offset + 16) != PPC_HA (offset))
9274 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9277 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9278 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9279 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9280 bfd_put_32 (obfd, BCTR, p), p += 4;
9287 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9288 if (PPC_HA (offset + 16) != PPC_HA (offset))
9290 r[1].r_offset = r[0].r_offset + 4;
9291 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9292 r[1].r_addend = r[0].r_addend;
9296 r[1].r_offset = r[0].r_offset + 8;
9297 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9298 r[1].r_addend = r[0].r_addend + 16;
9299 r[2].r_offset = r[1].r_offset + 4;
9300 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9301 r[2].r_addend = r[0].r_addend + 8;
9304 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9305 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9306 if (PPC_HA (offset + 16) != PPC_HA (offset))
9308 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9311 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9312 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9313 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9314 bfd_put_32 (obfd, BCTR, p), p += 4;
9319 /* Build a special .plt call stub for __tls_get_addr. */
9321 #define LD_R11_0R3 0xe9630000
9322 #define LD_R12_0R3 0xe9830000
9323 #define MR_R0_R3 0x7c601b78
9324 #define CMPDI_R11_0 0x2c2b0000
9325 #define ADD_R3_R12_R13 0x7c6c6a14
9326 #define BEQLR 0x4d820020
9327 #define MR_R3_R0 0x7c030378
9328 #define MFLR_R11 0x7d6802a6
9329 #define STD_R11_0R1 0xf9610000
9330 #define BCTRL 0x4e800421
9331 #define LD_R11_0R1 0xe9610000
9332 #define LD_R2_0R1 0xe8410000
9333 #define MTLR_R11 0x7d6803a6
9335 static inline bfd_byte *
9336 build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset,
9337 Elf_Internal_Rela *r)
9339 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9340 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9341 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9342 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9343 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9344 bfd_put_32 (obfd, BEQLR, p), p += 4;
9345 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9346 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9347 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9350 r[0].r_offset += 9 * 4;
9351 p = build_plt_stub (obfd, p, offset, r);
9352 bfd_put_32 (obfd, BCTRL, p - 4);
9354 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9355 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9356 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9357 bfd_put_32 (obfd, BLR, p), p += 4;
9362 static Elf_Internal_Rela *
9363 get_relocs (asection *sec, int count)
9365 Elf_Internal_Rela *relocs;
9366 struct bfd_elf_section_data *elfsec_data;
9368 elfsec_data = elf_section_data (sec);
9369 relocs = elfsec_data->relocs;
9372 bfd_size_type relsize;
9373 relsize = sec->reloc_count * sizeof (*relocs);
9374 relocs = bfd_alloc (sec->owner, relsize);
9377 elfsec_data->relocs = relocs;
9378 elfsec_data->rel_hdr.sh_size = (sec->reloc_count
9379 * sizeof (Elf64_External_Rela));
9380 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
9381 sec->reloc_count = 0;
9383 relocs += sec->reloc_count;
9384 sec->reloc_count += count;
9389 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9391 struct ppc_stub_hash_entry *stub_entry;
9392 struct ppc_branch_hash_entry *br_entry;
9393 struct bfd_link_info *info;
9394 struct ppc_link_hash_table *htab;
9399 Elf_Internal_Rela *r;
9402 /* Massage our args to the form they really have. */
9403 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9406 htab = ppc_hash_table (info);
9410 /* Make a note of the offset within the stubs for this entry. */
9411 stub_entry->stub_offset = stub_entry->stub_sec->size;
9412 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9414 htab->stub_count[stub_entry->stub_type - 1] += 1;
9415 switch (stub_entry->stub_type)
9417 case ppc_stub_long_branch:
9418 case ppc_stub_long_branch_r2off:
9419 /* Branches are relative. This is where we are going to. */
9420 off = dest = (stub_entry->target_value
9421 + stub_entry->target_section->output_offset
9422 + stub_entry->target_section->output_section->vma);
9424 /* And this is where we are coming from. */
9425 off -= (stub_entry->stub_offset
9426 + stub_entry->stub_sec->output_offset
9427 + stub_entry->stub_sec->output_section->vma);
9430 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9434 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9435 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9436 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9439 if (PPC_HA (r2off) != 0)
9442 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9445 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9449 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9451 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9453 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
9454 stub_entry->root.string);
9455 htab->stub_error = TRUE;
9459 if (info->emitrelocations)
9461 r = get_relocs (stub_entry->stub_sec, 1);
9464 r->r_offset = loc - stub_entry->stub_sec->contents;
9465 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9467 if (stub_entry->h != NULL)
9469 struct elf_link_hash_entry **hashes;
9470 unsigned long symndx;
9471 struct ppc_link_hash_entry *h;
9473 hashes = elf_sym_hashes (htab->stub_bfd);
9476 bfd_size_type hsize;
9478 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9479 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9482 elf_sym_hashes (htab->stub_bfd) = hashes;
9483 htab->stub_globals = 1;
9485 symndx = htab->stub_globals++;
9487 hashes[symndx] = &h->elf;
9488 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9489 if (h->oh != NULL && h->oh->is_func)
9490 h = ppc_follow_link (h->oh);
9491 if (h->elf.root.u.def.section != stub_entry->target_section)
9492 /* H is an opd symbol. The addend must be zero. */
9496 off = (h->elf.root.u.def.value
9497 + h->elf.root.u.def.section->output_offset
9498 + h->elf.root.u.def.section->output_section->vma);
9505 case ppc_stub_plt_branch:
9506 case ppc_stub_plt_branch_r2off:
9507 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9508 stub_entry->root.string + 9,
9510 if (br_entry == NULL)
9512 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
9513 stub_entry->root.string);
9514 htab->stub_error = TRUE;
9518 dest = (stub_entry->target_value
9519 + stub_entry->target_section->output_offset
9520 + stub_entry->target_section->output_section->vma);
9522 bfd_put_64 (htab->brlt->owner, dest,
9523 htab->brlt->contents + br_entry->offset);
9525 if (br_entry->iter == htab->stub_iteration)
9529 if (htab->relbrlt != NULL)
9531 /* Create a reloc for the branch lookup table entry. */
9532 Elf_Internal_Rela rela;
9535 rela.r_offset = (br_entry->offset
9536 + htab->brlt->output_offset
9537 + htab->brlt->output_section->vma);
9538 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9539 rela.r_addend = dest;
9541 rl = htab->relbrlt->contents;
9542 rl += (htab->relbrlt->reloc_count++
9543 * sizeof (Elf64_External_Rela));
9544 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9546 else if (info->emitrelocations)
9548 r = get_relocs (htab->brlt, 1);
9551 /* brlt, being SEC_LINKER_CREATED does not go through the
9552 normal reloc processing. Symbols and offsets are not
9553 translated from input file to output file form, so
9554 set up the offset per the output file. */
9555 r->r_offset = (br_entry->offset
9556 + htab->brlt->output_offset
9557 + htab->brlt->output_section->vma);
9558 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9563 dest = (br_entry->offset
9564 + htab->brlt->output_offset
9565 + htab->brlt->output_section->vma);
9568 - elf_gp (htab->brlt->output_section->owner)
9569 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9571 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9573 (*_bfd_error_handler)
9574 (_("linkage table error against `%s'"),
9575 stub_entry->root.string);
9576 bfd_set_error (bfd_error_bad_value);
9577 htab->stub_error = TRUE;
9581 if (info->emitrelocations)
9583 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
9586 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9587 if (bfd_big_endian (info->output_bfd))
9589 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
9591 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9592 r[0].r_addend = dest;
9593 if (PPC_HA (off) != 0)
9595 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9596 r[1].r_offset = r[0].r_offset + 4;
9597 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9598 r[1].r_addend = r[0].r_addend;
9602 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9604 if (PPC_HA (off) != 0)
9607 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9609 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9614 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9621 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9622 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9623 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9626 if (PPC_HA (off) != 0)
9629 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9631 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9636 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9640 if (PPC_HA (r2off) != 0)
9643 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9646 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9649 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
9651 bfd_put_32 (htab->stub_bfd, BCTR, loc);
9654 case ppc_stub_plt_call:
9655 if (stub_entry->h != NULL
9656 && stub_entry->h->is_func_descriptor
9657 && stub_entry->h->oh != NULL)
9659 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
9661 /* If the old-ABI "dot-symbol" is undefined make it weak so
9662 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9663 FIXME: We used to define the symbol on one of the call
9664 stubs instead, which is why we test symbol section id
9665 against htab->top_id in various places. Likely all
9666 these checks could now disappear. */
9667 if (fh->elf.root.type == bfd_link_hash_undefined)
9668 fh->elf.root.type = bfd_link_hash_undefweak;
9671 /* Now build the stub. */
9672 dest = stub_entry->plt_ent->plt.offset & ~1;
9673 if (dest >= (bfd_vma) -2)
9677 if (!htab->elf.dynamic_sections_created
9678 || stub_entry->h == NULL
9679 || stub_entry->h->elf.dynindx == -1)
9682 dest += plt->output_offset + plt->output_section->vma;
9684 if (stub_entry->h == NULL
9685 && (stub_entry->plt_ent->plt.offset & 1) == 0)
9687 Elf_Internal_Rela rela;
9690 rela.r_offset = dest;
9691 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
9692 rela.r_addend = (stub_entry->target_value
9693 + stub_entry->target_section->output_offset
9694 + stub_entry->target_section->output_section->vma);
9696 rl = (htab->reliplt->contents
9697 + (htab->reliplt->reloc_count++
9698 * sizeof (Elf64_External_Rela)));
9699 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
9700 stub_entry->plt_ent->plt.offset |= 1;
9704 - elf_gp (plt->output_section->owner)
9705 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9707 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9709 (*_bfd_error_handler)
9710 (_("linkage table error against `%s'"),
9711 stub_entry->h != NULL
9712 ? stub_entry->h->elf.root.root.string
9714 bfd_set_error (bfd_error_bad_value);
9715 htab->stub_error = TRUE;
9720 if (info->emitrelocations)
9722 r = get_relocs (stub_entry->stub_sec,
9723 (2 + (PPC_HA (off) != 0)
9724 + (PPC_HA (off + 16) == PPC_HA (off))));
9727 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9728 if (bfd_big_endian (info->output_bfd))
9730 r[0].r_addend = dest;
9732 if (stub_entry->h != NULL
9733 && (stub_entry->h == htab->tls_get_addr_fd
9734 || stub_entry->h == htab->tls_get_addr)
9735 && !htab->no_tls_get_addr_opt)
9736 p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r);
9738 p = build_plt_stub (htab->stub_bfd, loc, off, r);
9747 stub_entry->stub_sec->size += size;
9749 if (htab->emit_stub_syms)
9751 struct elf_link_hash_entry *h;
9754 const char *const stub_str[] = { "long_branch",
9755 "long_branch_r2off",
9760 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
9761 len2 = strlen (stub_entry->root.string);
9762 name = bfd_malloc (len1 + len2 + 2);
9765 memcpy (name, stub_entry->root.string, 9);
9766 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
9767 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
9768 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
9771 if (h->root.type == bfd_link_hash_new)
9773 h->root.type = bfd_link_hash_defined;
9774 h->root.u.def.section = stub_entry->stub_sec;
9775 h->root.u.def.value = stub_entry->stub_offset;
9778 h->ref_regular_nonweak = 1;
9779 h->forced_local = 1;
9787 /* As above, but don't actually build the stub. Just bump offset so
9788 we know stub section sizes, and select plt_branch stubs where
9789 long_branch stubs won't do. */
9792 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9794 struct ppc_stub_hash_entry *stub_entry;
9795 struct bfd_link_info *info;
9796 struct ppc_link_hash_table *htab;
9800 /* Massage our args to the form they really have. */
9801 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9804 htab = ppc_hash_table (info);
9808 if (stub_entry->stub_type == ppc_stub_plt_call)
9811 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
9812 if (off >= (bfd_vma) -2)
9815 if (!htab->elf.dynamic_sections_created
9816 || stub_entry->h == NULL
9817 || stub_entry->h->elf.dynindx == -1)
9819 off += (plt->output_offset
9820 + plt->output_section->vma
9821 - elf_gp (plt->output_section->owner)
9822 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9824 size = PLT_CALL_STUB_SIZE;
9825 if (PPC_HA (off) == 0)
9827 if (PPC_HA (off + 16) != PPC_HA (off))
9829 if (stub_entry->h != NULL
9830 && (stub_entry->h == htab->tls_get_addr_fd
9831 || stub_entry->h == htab->tls_get_addr)
9832 && !htab->no_tls_get_addr_opt)
9834 if (info->emitrelocations)
9836 stub_entry->stub_sec->reloc_count
9837 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
9838 stub_entry->stub_sec->flags |= SEC_RELOC;
9843 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9847 off = (stub_entry->target_value
9848 + stub_entry->target_section->output_offset
9849 + stub_entry->target_section->output_section->vma);
9850 off -= (stub_entry->stub_sec->size
9851 + stub_entry->stub_sec->output_offset
9852 + stub_entry->stub_sec->output_section->vma);
9854 /* Reset the stub type from the plt variant in case we now
9855 can reach with a shorter stub. */
9856 if (stub_entry->stub_type >= ppc_stub_plt_branch)
9857 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
9860 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9862 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9863 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9865 if (PPC_HA (r2off) != 0)
9870 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9871 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9873 struct ppc_branch_hash_entry *br_entry;
9875 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9876 stub_entry->root.string + 9,
9878 if (br_entry == NULL)
9880 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
9881 stub_entry->root.string);
9882 htab->stub_error = TRUE;
9886 if (br_entry->iter != htab->stub_iteration)
9888 br_entry->iter = htab->stub_iteration;
9889 br_entry->offset = htab->brlt->size;
9890 htab->brlt->size += 8;
9892 if (htab->relbrlt != NULL)
9893 htab->relbrlt->size += sizeof (Elf64_External_Rela);
9894 else if (info->emitrelocations)
9896 htab->brlt->reloc_count += 1;
9897 htab->brlt->flags |= SEC_RELOC;
9901 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
9902 off = (br_entry->offset
9903 + htab->brlt->output_offset
9904 + htab->brlt->output_section->vma
9905 - elf_gp (htab->brlt->output_section->owner)
9906 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9908 if (info->emitrelocations)
9910 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
9911 stub_entry->stub_sec->flags |= SEC_RELOC;
9914 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9917 if (PPC_HA (off) != 0)
9923 if (PPC_HA (off) != 0)
9926 if (PPC_HA (r2off) != 0)
9930 else if (info->emitrelocations)
9932 stub_entry->stub_sec->reloc_count += 1;
9933 stub_entry->stub_sec->flags |= SEC_RELOC;
9937 stub_entry->stub_sec->size += size;
9941 /* Set up various things so that we can make a list of input sections
9942 for each output section included in the link. Returns -1 on error,
9943 0 when no stubs will be needed, and 1 on success. */
9946 ppc64_elf_setup_section_lists
9947 (struct bfd_link_info *info,
9948 asection *(*add_stub_section) (const char *, asection *),
9949 void (*layout_sections_again) (void))
9952 int top_id, top_index, id;
9954 asection **input_list;
9956 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9960 /* Stash our params away. */
9961 htab->add_stub_section = add_stub_section;
9962 htab->layout_sections_again = layout_sections_again;
9964 if (htab->brlt == NULL)
9967 /* Find the top input section id. */
9968 for (input_bfd = info->input_bfds, top_id = 3;
9970 input_bfd = input_bfd->link_next)
9972 for (section = input_bfd->sections;
9974 section = section->next)
9976 if (top_id < section->id)
9977 top_id = section->id;
9981 htab->top_id = top_id;
9982 amt = sizeof (struct map_stub) * (top_id + 1);
9983 htab->stub_group = bfd_zmalloc (amt);
9984 if (htab->stub_group == NULL)
9987 /* Set toc_off for com, und, abs and ind sections. */
9988 for (id = 0; id < 3; id++)
9989 htab->stub_group[id].toc_off = TOC_BASE_OFF;
9991 /* We can't use output_bfd->section_count here to find the top output
9992 section index as some sections may have been removed, and
9993 strip_excluded_output_sections doesn't renumber the indices. */
9994 for (section = info->output_bfd->sections, top_index = 0;
9996 section = section->next)
9998 if (top_index < section->index)
9999 top_index = section->index;
10002 htab->top_index = top_index;
10003 amt = sizeof (asection *) * (top_index + 1);
10004 input_list = bfd_zmalloc (amt);
10005 htab->input_list = input_list;
10006 if (input_list == NULL)
10012 /* Set up for first pass at multitoc partitioning. */
10015 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10017 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10019 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10020 htab->toc_curr = elf_gp (info->output_bfd);
10021 htab->toc_bfd = NULL;
10022 htab->toc_first_sec = NULL;
10025 /* The linker repeatedly calls this function for each TOC input section
10026 and linker generated GOT section. Group input bfds such that the toc
10027 within a group is less than 64k in size. */
10030 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10032 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10033 bfd_vma addr, off, limit;
10038 if (!htab->second_toc_pass)
10040 /* Keep track of the first .toc or .got section for this input bfd. */
10041 if (htab->toc_bfd != isec->owner)
10043 htab->toc_bfd = isec->owner;
10044 htab->toc_first_sec = isec;
10047 addr = isec->output_offset + isec->output_section->vma;
10048 off = addr - htab->toc_curr;
10049 limit = 0x80008000;
10050 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10052 if (off + isec->size > limit)
10054 addr = (htab->toc_first_sec->output_offset
10055 + htab->toc_first_sec->output_section->vma);
10056 htab->toc_curr = addr;
10059 /* toc_curr is the base address of this toc group. Set elf_gp
10060 for the input section to be the offset relative to the
10061 output toc base plus 0x8000. Making the input elf_gp an
10062 offset allows us to move the toc as a whole without
10063 recalculating input elf_gp. */
10064 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10065 off += TOC_BASE_OFF;
10067 /* Die if someone uses a linker script that doesn't keep input
10068 file .toc and .got together. */
10069 if (elf_gp (isec->owner) != 0
10070 && elf_gp (isec->owner) != off)
10073 elf_gp (isec->owner) = off;
10077 /* During the second pass toc_first_sec points to the start of
10078 a toc group, and toc_curr is used to track the old elf_gp.
10079 We use toc_bfd to ensure we only look at each bfd once. */
10080 if (htab->toc_bfd == isec->owner)
10082 htab->toc_bfd = isec->owner;
10084 if (htab->toc_first_sec == NULL
10085 || htab->toc_curr != elf_gp (isec->owner))
10087 htab->toc_curr = elf_gp (isec->owner);
10088 htab->toc_first_sec = isec;
10090 addr = (htab->toc_first_sec->output_offset
10091 + htab->toc_first_sec->output_section->vma);
10092 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10093 elf_gp (isec->owner) = off;
10098 /* Called via elf_link_hash_traverse to merge GOT entries for global
10102 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10104 if (h->root.type == bfd_link_hash_indirect)
10107 if (h->root.type == bfd_link_hash_warning)
10108 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10110 merge_got_entries (&h->got.glist);
10115 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10119 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10121 struct got_entry *gent;
10123 if (h->root.type == bfd_link_hash_indirect)
10126 if (h->root.type == bfd_link_hash_warning)
10127 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10129 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10130 if (!gent->is_indirect)
10131 allocate_got (h, (struct bfd_link_info *) inf, gent);
10135 /* Called on the first multitoc pass after the last call to
10136 ppc64_elf_next_toc_section. This function removes duplicate GOT
10140 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10142 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10143 struct bfd *ibfd, *ibfd2;
10144 bfd_boolean done_something;
10146 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10148 if (!htab->do_multi_toc)
10151 /* Merge global sym got entries within a toc group. */
10152 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10154 /* And tlsld_got. */
10155 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10157 struct got_entry *ent, *ent2;
10159 if (!is_ppc64_elf (ibfd))
10162 ent = ppc64_tlsld_got (ibfd);
10163 if (!ent->is_indirect
10164 && ent->got.offset != (bfd_vma) -1)
10166 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10168 if (!is_ppc64_elf (ibfd2))
10171 ent2 = ppc64_tlsld_got (ibfd2);
10172 if (!ent2->is_indirect
10173 && ent2->got.offset != (bfd_vma) -1
10174 && elf_gp (ibfd2) == elf_gp (ibfd))
10176 ent2->is_indirect = TRUE;
10177 ent2->got.ent = ent;
10183 /* Zap sizes of got sections. */
10184 htab->reliplt->rawsize = htab->reliplt->size;
10185 htab->reliplt->size -= htab->got_reli_size;
10186 htab->got_reli_size = 0;
10188 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10190 asection *got, *relgot;
10192 if (!is_ppc64_elf (ibfd))
10195 got = ppc64_elf_tdata (ibfd)->got;
10198 got->rawsize = got->size;
10200 relgot = ppc64_elf_tdata (ibfd)->relgot;
10201 relgot->rawsize = relgot->size;
10206 /* Now reallocate the got, local syms first. We don't need to
10207 allocate section contents again since we never increase size. */
10208 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10210 struct got_entry **lgot_ents;
10211 struct got_entry **end_lgot_ents;
10212 struct plt_entry **local_plt;
10213 struct plt_entry **end_local_plt;
10214 unsigned char *lgot_masks;
10215 bfd_size_type locsymcount;
10216 Elf_Internal_Shdr *symtab_hdr;
10217 asection *s, *srel;
10219 if (!is_ppc64_elf (ibfd))
10222 lgot_ents = elf_local_got_ents (ibfd);
10226 symtab_hdr = &elf_symtab_hdr (ibfd);
10227 locsymcount = symtab_hdr->sh_info;
10228 end_lgot_ents = lgot_ents + locsymcount;
10229 local_plt = (struct plt_entry **) end_lgot_ents;
10230 end_local_plt = local_plt + locsymcount;
10231 lgot_masks = (unsigned char *) end_local_plt;
10232 s = ppc64_elf_tdata (ibfd)->got;
10233 srel = ppc64_elf_tdata (ibfd)->relgot;
10234 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10236 struct got_entry *ent;
10238 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10240 unsigned int num = 1;
10241 ent->got.offset = s->size;
10242 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10244 s->size += num * 8;
10246 srel->size += num * sizeof (Elf64_External_Rela);
10247 else if ((*lgot_masks & PLT_IFUNC) != 0)
10249 htab->reliplt->size
10250 += num * sizeof (Elf64_External_Rela);
10251 htab->got_reli_size
10252 += num * sizeof (Elf64_External_Rela);
10258 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10260 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10262 struct got_entry *ent;
10264 if (!is_ppc64_elf (ibfd))
10267 ent = ppc64_tlsld_got (ibfd);
10268 if (!ent->is_indirect
10269 && ent->got.offset != (bfd_vma) -1)
10271 asection *s = ppc64_elf_tdata (ibfd)->got;
10272 ent->got.offset = s->size;
10276 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10277 srel->size += sizeof (Elf64_External_Rela);
10282 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10283 if (!done_something)
10284 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10288 if (!is_ppc64_elf (ibfd))
10291 got = ppc64_elf_tdata (ibfd)->got;
10294 done_something = got->rawsize != got->size;
10295 if (done_something)
10300 if (done_something)
10301 (*htab->layout_sections_again) ();
10303 /* Set up for second pass over toc sections to recalculate elf_gp
10304 on input sections. */
10305 htab->toc_bfd = NULL;
10306 htab->toc_first_sec = NULL;
10307 htab->second_toc_pass = TRUE;
10308 return done_something;
10311 /* Called after second pass of multitoc partitioning. */
10314 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10316 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10318 /* After the second pass, toc_curr tracks the TOC offset used
10319 for code sections below in ppc64_elf_next_input_section. */
10320 htab->toc_curr = TOC_BASE_OFF;
10323 /* No toc references were found in ISEC. If the code in ISEC makes no
10324 calls, then there's no need to use toc adjusting stubs when branching
10325 into ISEC. Actually, indirect calls from ISEC are OK as they will
10326 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10327 needed, and 2 if a cyclical call-graph was found but no other reason
10328 for a stub was detected. If called from the top level, a return of
10329 2 means the same as a return of 0. */
10332 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10336 /* Mark this section as checked. */
10337 isec->call_check_done = 1;
10339 /* We know none of our code bearing sections will need toc stubs. */
10340 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10343 if (isec->size == 0)
10346 if (isec->output_section == NULL)
10350 if (isec->reloc_count != 0)
10352 Elf_Internal_Rela *relstart, *rel;
10353 Elf_Internal_Sym *local_syms;
10354 struct ppc_link_hash_table *htab;
10356 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10357 info->keep_memory);
10358 if (relstart == NULL)
10361 /* Look for branches to outside of this section. */
10363 htab = ppc_hash_table (info);
10367 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10369 enum elf_ppc64_reloc_type r_type;
10370 unsigned long r_symndx;
10371 struct elf_link_hash_entry *h;
10372 struct ppc_link_hash_entry *eh;
10373 Elf_Internal_Sym *sym;
10375 struct _opd_sec_data *opd;
10379 r_type = ELF64_R_TYPE (rel->r_info);
10380 if (r_type != R_PPC64_REL24
10381 && r_type != R_PPC64_REL14
10382 && r_type != R_PPC64_REL14_BRTAKEN
10383 && r_type != R_PPC64_REL14_BRNTAKEN)
10386 r_symndx = ELF64_R_SYM (rel->r_info);
10387 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10394 /* Calls to dynamic lib functions go through a plt call stub
10396 eh = (struct ppc_link_hash_entry *) h;
10398 && (eh->elf.plt.plist != NULL
10400 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10406 if (sym_sec == NULL)
10407 /* Ignore other undefined symbols. */
10410 /* Assume branches to other sections not included in the
10411 link need stubs too, to cover -R and absolute syms. */
10412 if (sym_sec->output_section == NULL)
10419 sym_value = sym->st_value;
10422 if (h->root.type != bfd_link_hash_defined
10423 && h->root.type != bfd_link_hash_defweak)
10425 sym_value = h->root.u.def.value;
10427 sym_value += rel->r_addend;
10429 /* If this branch reloc uses an opd sym, find the code section. */
10430 opd = get_opd_info (sym_sec);
10433 if (h == NULL && opd->adjust != NULL)
10437 adjust = opd->adjust[sym->st_value / 8];
10439 /* Assume deleted functions won't ever be called. */
10441 sym_value += adjust;
10444 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10445 if (dest == (bfd_vma) -1)
10450 + sym_sec->output_offset
10451 + sym_sec->output_section->vma);
10453 /* Ignore branch to self. */
10454 if (sym_sec == isec)
10457 /* If the called function uses the toc, we need a stub. */
10458 if (sym_sec->has_toc_reloc
10459 || sym_sec->makes_toc_func_call)
10465 /* Assume any branch that needs a long branch stub might in fact
10466 need a plt_branch stub. A plt_branch stub uses r2. */
10467 else if (dest - (isec->output_offset
10468 + isec->output_section->vma
10469 + rel->r_offset) + (1 << 25) >= (2 << 25))
10475 /* If calling back to a section in the process of being
10476 tested, we can't say for sure that no toc adjusting stubs
10477 are needed, so don't return zero. */
10478 else if (sym_sec->call_check_in_progress)
10481 /* Branches to another section that itself doesn't have any TOC
10482 references are OK. Recursively call ourselves to check. */
10483 else if (!sym_sec->call_check_done)
10487 /* Mark current section as indeterminate, so that other
10488 sections that call back to current won't be marked as
10490 isec->call_check_in_progress = 1;
10491 recur = toc_adjusting_stub_needed (info, sym_sec);
10492 isec->call_check_in_progress = 0;
10503 if (local_syms != NULL
10504 && (elf_symtab_hdr (isec->owner).contents
10505 != (unsigned char *) local_syms))
10507 if (elf_section_data (isec)->relocs != relstart)
10512 && isec->map_head.s != NULL
10513 && (strcmp (isec->output_section->name, ".init") == 0
10514 || strcmp (isec->output_section->name, ".fini") == 0))
10516 if (isec->map_head.s->has_toc_reloc
10517 || isec->map_head.s->makes_toc_func_call)
10519 else if (!isec->map_head.s->call_check_done)
10522 isec->call_check_in_progress = 1;
10523 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
10524 isec->call_check_in_progress = 0;
10531 isec->makes_toc_func_call = 1;
10536 /* The linker repeatedly calls this function for each input section,
10537 in the order that input sections are linked into output sections.
10538 Build lists of input sections to determine groupings between which
10539 we may insert linker stubs. */
10542 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
10544 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10549 if ((isec->output_section->flags & SEC_CODE) != 0
10550 && isec->output_section->index <= htab->top_index)
10552 asection **list = htab->input_list + isec->output_section->index;
10553 /* Steal the link_sec pointer for our list. */
10554 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10555 /* This happens to make the list in reverse order,
10556 which is what we want. */
10557 PREV_SEC (isec) = *list;
10561 if (htab->multi_toc_needed)
10563 /* If a code section has a function that uses the TOC then we need
10564 to use the right TOC (obviously). Also, make sure that .opd gets
10565 the correct TOC value for R_PPC64_TOC relocs that don't have or
10566 can't find their function symbol (shouldn't ever happen now).
10567 Also specially treat .fixup for the linux kernel. .fixup
10568 contains branches, but only back to the function that hit an
10570 if (isec->has_toc_reloc
10571 || (isec->flags & SEC_CODE) == 0
10572 || strcmp (isec->name, ".fixup") == 0)
10574 if (elf_gp (isec->owner) != 0)
10575 htab->toc_curr = elf_gp (isec->owner);
10577 else if (!isec->call_check_done
10578 && toc_adjusting_stub_needed (info, isec) < 0)
10582 /* Functions that don't use the TOC can belong in any TOC group.
10583 Use the last TOC base. This happens to make _init and _fini
10584 pasting work, because the fragments generally don't use the TOC. */
10585 htab->stub_group[isec->id].toc_off = htab->toc_curr;
10589 /* Check that all .init and .fini sections use the same toc, if they
10590 have toc relocs. */
10593 check_pasted_section (struct bfd_link_info *info, const char *name)
10595 asection *o = bfd_get_section_by_name (info->output_bfd, name);
10599 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10600 bfd_vma toc_off = 0;
10603 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10604 if (i->has_toc_reloc)
10607 toc_off = htab->stub_group[i->id].toc_off;
10608 else if (toc_off != htab->stub_group[i->id].toc_off)
10611 /* Make sure the whole pasted function uses the same toc offset. */
10613 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10614 htab->stub_group[i->id].toc_off = toc_off;
10620 ppc64_elf_check_init_fini (struct bfd_link_info *info)
10622 return (check_pasted_section (info, ".init")
10623 & check_pasted_section (info, ".fini"));
10626 /* See whether we can group stub sections together. Grouping stub
10627 sections may result in fewer stubs. More importantly, we need to
10628 put all .init* and .fini* stubs at the beginning of the .init or
10629 .fini output sections respectively, because glibc splits the
10630 _init and _fini functions into multiple parts. Putting a stub in
10631 the middle of a function is not a good idea. */
10634 group_sections (struct ppc_link_hash_table *htab,
10635 bfd_size_type stub_group_size,
10636 bfd_boolean stubs_always_before_branch)
10639 bfd_size_type stub14_group_size;
10640 bfd_boolean suppress_size_errors;
10642 suppress_size_errors = FALSE;
10643 stub14_group_size = stub_group_size;
10644 if (stub_group_size == 1)
10646 /* Default values. */
10647 if (stubs_always_before_branch)
10649 stub_group_size = 0x1e00000;
10650 stub14_group_size = 0x7800;
10654 stub_group_size = 0x1c00000;
10655 stub14_group_size = 0x7000;
10657 suppress_size_errors = TRUE;
10660 list = htab->input_list + htab->top_index;
10663 asection *tail = *list;
10664 while (tail != NULL)
10668 bfd_size_type total;
10669 bfd_boolean big_sec;
10673 total = tail->size;
10674 big_sec = total > (ppc64_elf_section_data (tail) != NULL
10675 && ppc64_elf_section_data (tail)->has_14bit_branch
10676 ? stub14_group_size : stub_group_size);
10677 if (big_sec && !suppress_size_errors)
10678 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
10679 tail->owner, tail);
10680 curr_toc = htab->stub_group[tail->id].toc_off;
10682 while ((prev = PREV_SEC (curr)) != NULL
10683 && ((total += curr->output_offset - prev->output_offset)
10684 < (ppc64_elf_section_data (prev) != NULL
10685 && ppc64_elf_section_data (prev)->has_14bit_branch
10686 ? stub14_group_size : stub_group_size))
10687 && htab->stub_group[prev->id].toc_off == curr_toc)
10690 /* OK, the size from the start of CURR to the end is less
10691 than stub_group_size and thus can be handled by one stub
10692 section. (or the tail section is itself larger than
10693 stub_group_size, in which case we may be toast.) We
10694 should really be keeping track of the total size of stubs
10695 added here, as stubs contribute to the final output
10696 section size. That's a little tricky, and this way will
10697 only break if stubs added make the total size more than
10698 2^25, ie. for the default stub_group_size, if stubs total
10699 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10702 prev = PREV_SEC (tail);
10703 /* Set up this stub group. */
10704 htab->stub_group[tail->id].link_sec = curr;
10706 while (tail != curr && (tail = prev) != NULL);
10708 /* But wait, there's more! Input sections up to stub_group_size
10709 bytes before the stub section can be handled by it too.
10710 Don't do this if we have a really large section after the
10711 stubs, as adding more stubs increases the chance that
10712 branches may not reach into the stub section. */
10713 if (!stubs_always_before_branch && !big_sec)
10716 while (prev != NULL
10717 && ((total += tail->output_offset - prev->output_offset)
10718 < (ppc64_elf_section_data (prev) != NULL
10719 && ppc64_elf_section_data (prev)->has_14bit_branch
10720 ? stub14_group_size : stub_group_size))
10721 && htab->stub_group[prev->id].toc_off == curr_toc)
10724 prev = PREV_SEC (tail);
10725 htab->stub_group[tail->id].link_sec = curr;
10731 while (list-- != htab->input_list);
10732 free (htab->input_list);
10736 /* Determine and set the size of the stub section for a final link.
10738 The basic idea here is to examine all the relocations looking for
10739 PC-relative calls to a target that is unreachable with a "bl"
10743 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size)
10745 bfd_size_type stub_group_size;
10746 bfd_boolean stubs_always_before_branch;
10747 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10752 stubs_always_before_branch = group_size < 0;
10753 if (group_size < 0)
10754 stub_group_size = -group_size;
10756 stub_group_size = group_size;
10758 group_sections (htab, stub_group_size, stubs_always_before_branch);
10763 unsigned int bfd_indx;
10764 asection *stub_sec;
10766 htab->stub_iteration += 1;
10768 for (input_bfd = info->input_bfds, bfd_indx = 0;
10770 input_bfd = input_bfd->link_next, bfd_indx++)
10772 Elf_Internal_Shdr *symtab_hdr;
10774 Elf_Internal_Sym *local_syms = NULL;
10776 if (!is_ppc64_elf (input_bfd))
10779 /* We'll need the symbol table in a second. */
10780 symtab_hdr = &elf_symtab_hdr (input_bfd);
10781 if (symtab_hdr->sh_info == 0)
10784 /* Walk over each section attached to the input bfd. */
10785 for (section = input_bfd->sections;
10787 section = section->next)
10789 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
10791 /* If there aren't any relocs, then there's nothing more
10793 if ((section->flags & SEC_RELOC) == 0
10794 || (section->flags & SEC_ALLOC) == 0
10795 || (section->flags & SEC_LOAD) == 0
10796 || (section->flags & SEC_CODE) == 0
10797 || section->reloc_count == 0)
10800 /* If this section is a link-once section that will be
10801 discarded, then don't create any stubs. */
10802 if (section->output_section == NULL
10803 || section->output_section->owner != info->output_bfd)
10806 /* Get the relocs. */
10808 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
10809 info->keep_memory);
10810 if (internal_relocs == NULL)
10811 goto error_ret_free_local;
10813 /* Now examine each relocation. */
10814 irela = internal_relocs;
10815 irelaend = irela + section->reloc_count;
10816 for (; irela < irelaend; irela++)
10818 enum elf_ppc64_reloc_type r_type;
10819 unsigned int r_indx;
10820 enum ppc_stub_type stub_type;
10821 struct ppc_stub_hash_entry *stub_entry;
10822 asection *sym_sec, *code_sec;
10823 bfd_vma sym_value, code_value;
10824 bfd_vma destination;
10825 bfd_boolean ok_dest;
10826 struct ppc_link_hash_entry *hash;
10827 struct ppc_link_hash_entry *fdh;
10828 struct elf_link_hash_entry *h;
10829 Elf_Internal_Sym *sym;
10831 const asection *id_sec;
10832 struct _opd_sec_data *opd;
10833 struct plt_entry *plt_ent;
10835 r_type = ELF64_R_TYPE (irela->r_info);
10836 r_indx = ELF64_R_SYM (irela->r_info);
10838 if (r_type >= R_PPC64_max)
10840 bfd_set_error (bfd_error_bad_value);
10841 goto error_ret_free_internal;
10844 /* Only look for stubs on branch instructions. */
10845 if (r_type != R_PPC64_REL24
10846 && r_type != R_PPC64_REL14
10847 && r_type != R_PPC64_REL14_BRTAKEN
10848 && r_type != R_PPC64_REL14_BRNTAKEN)
10851 /* Now determine the call target, its name, value,
10853 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
10854 r_indx, input_bfd))
10855 goto error_ret_free_internal;
10856 hash = (struct ppc_link_hash_entry *) h;
10863 sym_value = sym->st_value;
10866 else if (hash->elf.root.type == bfd_link_hash_defined
10867 || hash->elf.root.type == bfd_link_hash_defweak)
10869 sym_value = hash->elf.root.u.def.value;
10870 if (sym_sec->output_section != NULL)
10873 else if (hash->elf.root.type == bfd_link_hash_undefweak
10874 || hash->elf.root.type == bfd_link_hash_undefined)
10876 /* Recognise an old ABI func code entry sym, and
10877 use the func descriptor sym instead if it is
10879 if (hash->elf.root.root.string[0] == '.'
10880 && (fdh = lookup_fdh (hash, htab)) != NULL)
10882 if (fdh->elf.root.type == bfd_link_hash_defined
10883 || fdh->elf.root.type == bfd_link_hash_defweak)
10885 sym_sec = fdh->elf.root.u.def.section;
10886 sym_value = fdh->elf.root.u.def.value;
10887 if (sym_sec->output_section != NULL)
10896 bfd_set_error (bfd_error_bad_value);
10897 goto error_ret_free_internal;
10903 sym_value += irela->r_addend;
10904 destination = (sym_value
10905 + sym_sec->output_offset
10906 + sym_sec->output_section->vma);
10909 code_sec = sym_sec;
10910 code_value = sym_value;
10911 opd = get_opd_info (sym_sec);
10916 if (hash == NULL && opd->adjust != NULL)
10918 long adjust = opd->adjust[sym_value / 8];
10921 code_value += adjust;
10922 sym_value += adjust;
10924 dest = opd_entry_value (sym_sec, sym_value,
10925 &code_sec, &code_value);
10926 if (dest != (bfd_vma) -1)
10928 destination = dest;
10931 /* Fixup old ABI sym to point at code
10933 hash->elf.root.type = bfd_link_hash_defweak;
10934 hash->elf.root.u.def.section = code_sec;
10935 hash->elf.root.u.def.value = code_value;
10940 /* Determine what (if any) linker stub is needed. */
10942 stub_type = ppc_type_of_stub (section, irela, &hash,
10943 &plt_ent, destination);
10945 if (stub_type != ppc_stub_plt_call)
10947 /* Check whether we need a TOC adjusting stub.
10948 Since the linker pastes together pieces from
10949 different object files when creating the
10950 _init and _fini functions, it may be that a
10951 call to what looks like a local sym is in
10952 fact a call needing a TOC adjustment. */
10953 if (code_sec != NULL
10954 && code_sec->output_section != NULL
10955 && (htab->stub_group[code_sec->id].toc_off
10956 != htab->stub_group[section->id].toc_off)
10957 && (code_sec->has_toc_reloc
10958 || code_sec->makes_toc_func_call))
10959 stub_type = ppc_stub_long_branch_r2off;
10962 if (stub_type == ppc_stub_none)
10965 /* __tls_get_addr calls might be eliminated. */
10966 if (stub_type != ppc_stub_plt_call
10968 && (hash == htab->tls_get_addr
10969 || hash == htab->tls_get_addr_fd)
10970 && section->has_tls_reloc
10971 && irela != internal_relocs)
10973 /* Get tls info. */
10974 unsigned char *tls_mask;
10976 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
10977 irela - 1, input_bfd))
10978 goto error_ret_free_internal;
10979 if (*tls_mask != 0)
10983 /* Support for grouping stub sections. */
10984 id_sec = htab->stub_group[section->id].link_sec;
10986 /* Get the name of this stub. */
10987 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
10989 goto error_ret_free_internal;
10991 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
10992 stub_name, FALSE, FALSE);
10993 if (stub_entry != NULL)
10995 /* The proper stub has already been created. */
11000 stub_entry = ppc_add_stub (stub_name, section, htab);
11001 if (stub_entry == NULL)
11004 error_ret_free_internal:
11005 if (elf_section_data (section)->relocs == NULL)
11006 free (internal_relocs);
11007 error_ret_free_local:
11008 if (local_syms != NULL
11009 && (symtab_hdr->contents
11010 != (unsigned char *) local_syms))
11015 stub_entry->stub_type = stub_type;
11016 if (stub_type != ppc_stub_plt_call)
11018 stub_entry->target_value = code_value;
11019 stub_entry->target_section = code_sec;
11023 stub_entry->target_value = sym_value;
11024 stub_entry->target_section = sym_sec;
11026 stub_entry->h = hash;
11027 stub_entry->plt_ent = plt_ent;
11028 stub_entry->addend = irela->r_addend;
11030 if (stub_entry->h != NULL)
11031 htab->stub_globals += 1;
11034 /* We're done with the internal relocs, free them. */
11035 if (elf_section_data (section)->relocs != internal_relocs)
11036 free (internal_relocs);
11039 if (local_syms != NULL
11040 && symtab_hdr->contents != (unsigned char *) local_syms)
11042 if (!info->keep_memory)
11045 symtab_hdr->contents = (unsigned char *) local_syms;
11049 /* We may have added some stubs. Find out the new size of the
11051 for (stub_sec = htab->stub_bfd->sections;
11053 stub_sec = stub_sec->next)
11054 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11056 stub_sec->rawsize = stub_sec->size;
11057 stub_sec->size = 0;
11058 stub_sec->reloc_count = 0;
11059 stub_sec->flags &= ~SEC_RELOC;
11062 htab->brlt->size = 0;
11063 htab->brlt->reloc_count = 0;
11064 htab->brlt->flags &= ~SEC_RELOC;
11065 if (htab->relbrlt != NULL)
11066 htab->relbrlt->size = 0;
11068 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11070 if (info->emitrelocations
11071 && htab->glink != NULL && htab->glink->size != 0)
11073 htab->glink->reloc_count = 1;
11074 htab->glink->flags |= SEC_RELOC;
11077 for (stub_sec = htab->stub_bfd->sections;
11079 stub_sec = stub_sec->next)
11080 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11081 && stub_sec->rawsize != stub_sec->size)
11084 /* Exit from this loop when no stubs have been added, and no stubs
11085 have changed size. */
11086 if (stub_sec == NULL)
11089 /* Ask the linker to do its stuff. */
11090 (*htab->layout_sections_again) ();
11093 /* It would be nice to strip htab->brlt from the output if the
11094 section is empty, but it's too late. If we strip sections here,
11095 the dynamic symbol table is corrupted since the section symbol
11096 for the stripped section isn't written. */
11101 /* Called after we have determined section placement. If sections
11102 move, we'll be called again. Provide a value for TOCstart. */
11105 ppc64_elf_toc (bfd *obfd)
11110 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11111 order. The TOC starts where the first of these sections starts. */
11112 s = bfd_get_section_by_name (obfd, ".got");
11113 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11114 s = bfd_get_section_by_name (obfd, ".toc");
11115 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11116 s = bfd_get_section_by_name (obfd, ".tocbss");
11117 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11118 s = bfd_get_section_by_name (obfd, ".plt");
11119 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11121 /* This may happen for
11122 o references to TOC base (SYM@toc / TOC[tc0]) without a
11124 o bad linker script
11125 o --gc-sections and empty TOC sections
11127 FIXME: Warn user? */
11129 /* Look for a likely section. We probably won't even be
11131 for (s = obfd->sections; s != NULL; s = s->next)
11132 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11134 == (SEC_ALLOC | SEC_SMALL_DATA))
11137 for (s = obfd->sections; s != NULL; s = s->next)
11138 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11139 == (SEC_ALLOC | SEC_SMALL_DATA))
11142 for (s = obfd->sections; s != NULL; s = s->next)
11143 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11147 for (s = obfd->sections; s != NULL; s = s->next)
11148 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11154 TOCstart = s->output_section->vma + s->output_offset;
11159 /* Build all the stubs associated with the current output file.
11160 The stubs are kept in a hash table attached to the main linker
11161 hash table. This function is called via gldelf64ppc_finish. */
11164 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11165 struct bfd_link_info *info,
11168 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11169 asection *stub_sec;
11171 int stub_sec_count = 0;
11176 htab->emit_stub_syms = emit_stub_syms;
11178 /* Allocate memory to hold the linker stubs. */
11179 for (stub_sec = htab->stub_bfd->sections;
11181 stub_sec = stub_sec->next)
11182 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11183 && stub_sec->size != 0)
11185 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11186 if (stub_sec->contents == NULL)
11188 /* We want to check that built size is the same as calculated
11189 size. rawsize is a convenient location to use. */
11190 stub_sec->rawsize = stub_sec->size;
11191 stub_sec->size = 0;
11194 if (htab->glink != NULL && htab->glink->size != 0)
11199 /* Build the .glink plt call stub. */
11200 if (htab->emit_stub_syms)
11202 struct elf_link_hash_entry *h;
11203 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11204 TRUE, FALSE, FALSE);
11207 if (h->root.type == bfd_link_hash_new)
11209 h->root.type = bfd_link_hash_defined;
11210 h->root.u.def.section = htab->glink;
11211 h->root.u.def.value = 8;
11212 h->ref_regular = 1;
11213 h->def_regular = 1;
11214 h->ref_regular_nonweak = 1;
11215 h->forced_local = 1;
11219 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11220 if (info->emitrelocations)
11222 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11225 r->r_offset = (htab->glink->output_offset
11226 + htab->glink->output_section->vma);
11227 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11228 r->r_addend = plt0;
11230 p = htab->glink->contents;
11231 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11232 bfd_put_64 (htab->glink->owner, plt0, p);
11234 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11236 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11238 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11240 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11242 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11244 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11246 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11248 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11250 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11252 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11254 bfd_put_32 (htab->glink->owner, BCTR, p);
11256 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11258 bfd_put_32 (htab->glink->owner, NOP, p);
11262 /* Build the .glink lazy link call stubs. */
11264 while (p < htab->glink->contents + htab->glink->size)
11268 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11273 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11275 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11278 bfd_put_32 (htab->glink->owner,
11279 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11283 htab->glink->rawsize = p - htab->glink->contents;
11286 if (htab->brlt->size != 0)
11288 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11290 if (htab->brlt->contents == NULL)
11293 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11295 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11296 htab->relbrlt->size);
11297 if (htab->relbrlt->contents == NULL)
11301 /* Build the stubs as directed by the stub hash table. */
11302 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
11304 if (htab->relbrlt != NULL)
11305 htab->relbrlt->reloc_count = 0;
11307 for (stub_sec = htab->stub_bfd->sections;
11309 stub_sec = stub_sec->next)
11310 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11312 stub_sec_count += 1;
11313 if (stub_sec->rawsize != stub_sec->size)
11317 if (stub_sec != NULL
11318 || htab->glink->rawsize != htab->glink->size)
11320 htab->stub_error = TRUE;
11321 (*_bfd_error_handler) (_("stubs don't match calculated size"));
11324 if (htab->stub_error)
11329 *stats = bfd_malloc (500);
11330 if (*stats == NULL)
11333 sprintf (*stats, _("linker stubs in %u group%s\n"
11335 " toc adjust %lu\n"
11336 " long branch %lu\n"
11337 " long toc adj %lu\n"
11340 stub_sec_count == 1 ? "" : "s",
11341 htab->stub_count[ppc_stub_long_branch - 1],
11342 htab->stub_count[ppc_stub_long_branch_r2off - 1],
11343 htab->stub_count[ppc_stub_plt_branch - 1],
11344 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
11345 htab->stub_count[ppc_stub_plt_call - 1]);
11350 /* This function undoes the changes made by add_symbol_adjust. */
11353 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11355 struct ppc_link_hash_entry *eh;
11357 if (h->root.type == bfd_link_hash_indirect)
11360 if (h->root.type == bfd_link_hash_warning)
11361 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11363 eh = (struct ppc_link_hash_entry *) h;
11364 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
11367 eh->elf.root.type = bfd_link_hash_undefined;
11372 ppc64_elf_restore_symbols (struct bfd_link_info *info)
11374 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11377 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
11380 /* What to do when ld finds relocations against symbols defined in
11381 discarded sections. */
11383 static unsigned int
11384 ppc64_elf_action_discarded (asection *sec)
11386 if (strcmp (".opd", sec->name) == 0)
11389 if (strcmp (".toc", sec->name) == 0)
11392 if (strcmp (".toc1", sec->name) == 0)
11395 return _bfd_elf_default_action_discarded (sec);
11398 /* REL points to a low-part reloc on a largetoc instruction sequence.
11399 Find the matching high-part reloc instruction and verify that it
11400 is addis REG,x,imm. If so, set *REG to x and return a pointer to
11401 the high-part reloc. */
11403 static const Elf_Internal_Rela *
11404 ha_reloc_match (const Elf_Internal_Rela *relocs,
11405 const Elf_Internal_Rela *rel,
11407 bfd_boolean match_addend,
11408 const bfd *input_bfd,
11409 const bfd_byte *contents)
11411 enum elf_ppc64_reloc_type r_type, r_type_ha;
11412 bfd_vma r_info_ha, r_addend;
11414 r_type = ELF64_R_TYPE (rel->r_info);
11417 case R_PPC64_GOT_TLSLD16_LO:
11418 case R_PPC64_GOT_TLSGD16_LO:
11419 case R_PPC64_GOT_TPREL16_LO_DS:
11420 case R_PPC64_GOT_DTPREL16_LO_DS:
11421 case R_PPC64_GOT16_LO:
11422 case R_PPC64_TOC16_LO:
11423 r_type_ha = r_type + 2;
11425 case R_PPC64_GOT16_LO_DS:
11426 r_type_ha = R_PPC64_GOT16_HA;
11428 case R_PPC64_TOC16_LO_DS:
11429 r_type_ha = R_PPC64_TOC16_HA;
11434 r_info_ha = ELF64_R_INFO (ELF64_R_SYM (rel->r_info), r_type_ha);
11435 r_addend = rel->r_addend;
11437 while (--rel >= relocs)
11438 if (rel->r_info == r_info_ha
11440 || rel->r_addend == r_addend))
11442 const bfd_byte *p = contents + (rel->r_offset & ~3);
11443 unsigned int insn = bfd_get_32 (input_bfd, p);
11444 if ((insn & (0x3f << 26)) == (15u << 26) /* addis rt,x,imm */
11445 && (insn & (0x1f << 21)) == (*reg << 21))
11447 *reg = (insn >> 16) & 0x1f;
11455 /* The RELOCATE_SECTION function is called by the ELF backend linker
11456 to handle the relocations for a section.
11458 The relocs are always passed as Rela structures; if the section
11459 actually uses Rel structures, the r_addend field will always be
11462 This function is responsible for adjust the section contents as
11463 necessary, and (if using Rela relocs and generating a
11464 relocatable output file) adjusting the reloc addend as
11467 This function does not have to worry about setting the reloc
11468 address or the reloc symbol index.
11470 LOCAL_SYMS is a pointer to the swapped in local symbols.
11472 LOCAL_SECTIONS is an array giving the section in the input file
11473 corresponding to the st_shndx field of each local symbol.
11475 The global hash table entry for the global symbols can be found
11476 via elf_sym_hashes (input_bfd).
11478 When generating relocatable output, this function must handle
11479 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11480 going to be the section symbol corresponding to the output
11481 section, which means that the addend must be adjusted
11485 ppc64_elf_relocate_section (bfd *output_bfd,
11486 struct bfd_link_info *info,
11488 asection *input_section,
11489 bfd_byte *contents,
11490 Elf_Internal_Rela *relocs,
11491 Elf_Internal_Sym *local_syms,
11492 asection **local_sections)
11494 struct ppc_link_hash_table *htab;
11495 Elf_Internal_Shdr *symtab_hdr;
11496 struct elf_link_hash_entry **sym_hashes;
11497 Elf_Internal_Rela *rel;
11498 Elf_Internal_Rela *relend;
11499 Elf_Internal_Rela outrel;
11501 struct got_entry **local_got_ents;
11502 unsigned char *ha_opt;
11504 bfd_boolean no_ha_opt;
11505 bfd_boolean ret = TRUE;
11506 bfd_boolean is_opd;
11507 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11508 bfd_boolean is_power4 = FALSE;
11509 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
11511 /* Initialize howto table if needed. */
11512 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
11515 htab = ppc_hash_table (info);
11519 /* Don't relocate stub sections. */
11520 if (input_section->owner == htab->stub_bfd)
11523 BFD_ASSERT (is_ppc64_elf (input_bfd));
11525 local_got_ents = elf_local_got_ents (input_bfd);
11526 TOCstart = elf_gp (output_bfd);
11527 symtab_hdr = &elf_symtab_hdr (input_bfd);
11528 sym_hashes = elf_sym_hashes (input_bfd);
11529 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
11534 relend = relocs + input_section->reloc_count;
11535 for (; rel < relend; rel++)
11537 enum elf_ppc64_reloc_type r_type;
11538 bfd_vma addend, orig_addend;
11539 bfd_reloc_status_type r;
11540 Elf_Internal_Sym *sym;
11542 struct elf_link_hash_entry *h_elf;
11543 struct ppc_link_hash_entry *h;
11544 struct ppc_link_hash_entry *fdh;
11545 const char *sym_name;
11546 unsigned long r_symndx, toc_symndx;
11547 bfd_vma toc_addend;
11548 unsigned char tls_mask, tls_gd, tls_type;
11549 unsigned char sym_type;
11550 bfd_vma relocation;
11551 bfd_boolean unresolved_reloc;
11552 bfd_boolean warned;
11555 struct ppc_stub_hash_entry *stub_entry;
11556 bfd_vma max_br_offset;
11559 r_type = ELF64_R_TYPE (rel->r_info);
11560 r_symndx = ELF64_R_SYM (rel->r_info);
11562 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11563 symbol of the previous ADDR64 reloc. The symbol gives us the
11564 proper TOC base to use. */
11565 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
11567 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
11569 r_symndx = ELF64_R_SYM (rel[-1].r_info);
11575 unresolved_reloc = FALSE;
11577 orig_addend = rel->r_addend;
11579 if (r_symndx < symtab_hdr->sh_info)
11581 /* It's a local symbol. */
11582 struct _opd_sec_data *opd;
11584 sym = local_syms + r_symndx;
11585 sec = local_sections[r_symndx];
11586 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
11587 sym_type = ELF64_ST_TYPE (sym->st_info);
11588 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
11589 opd = get_opd_info (sec);
11590 if (opd != NULL && opd->adjust != NULL)
11592 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
11597 /* If this is a relocation against the opd section sym
11598 and we have edited .opd, adjust the reloc addend so
11599 that ld -r and ld --emit-relocs output is correct.
11600 If it is a reloc against some other .opd symbol,
11601 then the symbol value will be adjusted later. */
11602 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
11603 rel->r_addend += adjust;
11605 relocation += adjust;
11611 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
11612 r_symndx, symtab_hdr, sym_hashes,
11613 h_elf, sec, relocation,
11614 unresolved_reloc, warned);
11615 sym_name = h_elf->root.root.string;
11616 sym_type = h_elf->type;
11618 h = (struct ppc_link_hash_entry *) h_elf;
11620 if (sec != NULL && elf_discarded_section (sec))
11622 /* For relocs against symbols from removed linkonce sections,
11623 or sections discarded by a linker script, we just want the
11624 section contents zeroed. Avoid any special processing. */
11625 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
11626 contents + rel->r_offset);
11632 if (info->relocatable)
11635 /* TLS optimizations. Replace instruction sequences and relocs
11636 based on information we collected in tls_optimize. We edit
11637 RELOCS so that --emit-relocs will output something sensible
11638 for the final instruction stream. */
11643 tls_mask = h->tls_mask;
11644 else if (local_got_ents != NULL)
11646 struct plt_entry **local_plt = (struct plt_entry **)
11647 (local_got_ents + symtab_hdr->sh_info);
11648 unsigned char *lgot_masks = (unsigned char *)
11649 (local_plt + symtab_hdr->sh_info);
11650 tls_mask = lgot_masks[r_symndx];
11653 && (r_type == R_PPC64_TLS
11654 || r_type == R_PPC64_TLSGD
11655 || r_type == R_PPC64_TLSLD))
11657 /* Check for toc tls entries. */
11658 unsigned char *toc_tls;
11660 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11661 &local_syms, rel, input_bfd))
11665 tls_mask = *toc_tls;
11668 /* Check that tls relocs are used with tls syms, and non-tls
11669 relocs are used with non-tls syms. */
11671 && r_type != R_PPC64_NONE
11673 || h->elf.root.type == bfd_link_hash_defined
11674 || h->elf.root.type == bfd_link_hash_defweak)
11675 && (IS_PPC64_TLS_RELOC (r_type)
11676 != (sym_type == STT_TLS
11677 || (sym_type == STT_SECTION
11678 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
11681 && (r_type == R_PPC64_TLS
11682 || r_type == R_PPC64_TLSGD
11683 || r_type == R_PPC64_TLSLD))
11684 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11687 (*_bfd_error_handler)
11688 (!IS_PPC64_TLS_RELOC (r_type)
11689 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11690 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11693 (long) rel->r_offset,
11694 ppc64_elf_howto_table[r_type]->name,
11698 /* Ensure reloc mapping code below stays sane. */
11699 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
11700 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
11701 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
11702 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
11703 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
11704 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
11705 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
11706 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
11707 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
11708 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
11716 case R_PPC64_LO_DS_OPT:
11717 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11718 if ((insn & (0x3f << 26)) != 58u << 26)
11720 insn += (14u << 26) - (58u << 26);
11721 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11722 r_type = R_PPC64_TOC16_LO;
11723 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11726 case R_PPC64_TOC16:
11727 case R_PPC64_TOC16_LO:
11728 case R_PPC64_TOC16_DS:
11729 case R_PPC64_TOC16_LO_DS:
11731 /* Check for toc tls entries. */
11732 unsigned char *toc_tls;
11735 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11736 &local_syms, rel, input_bfd);
11742 tls_mask = *toc_tls;
11743 if (r_type == R_PPC64_TOC16_DS
11744 || r_type == R_PPC64_TOC16_LO_DS)
11747 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
11752 /* If we found a GD reloc pair, then we might be
11753 doing a GD->IE transition. */
11756 tls_gd = TLS_TPRELGD;
11757 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11760 else if (retval == 3)
11762 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11770 case R_PPC64_GOT_TPREL16_HI:
11771 case R_PPC64_GOT_TPREL16_HA:
11773 && (tls_mask & TLS_TPREL) == 0)
11775 rel->r_offset -= d_offset;
11776 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11777 r_type = R_PPC64_NONE;
11778 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11782 case R_PPC64_GOT_TPREL16_DS:
11783 case R_PPC64_GOT_TPREL16_LO_DS:
11785 && (tls_mask & TLS_TPREL) == 0)
11788 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11790 insn |= 0x3c0d0000; /* addis 0,13,0 */
11791 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11792 r_type = R_PPC64_TPREL16_HA;
11793 if (toc_symndx != 0)
11795 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11796 rel->r_addend = toc_addend;
11797 /* We changed the symbol. Start over in order to
11798 get h, sym, sec etc. right. */
11803 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11809 && (tls_mask & TLS_TPREL) == 0)
11811 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
11812 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
11815 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11816 /* Was PPC64_TLS which sits on insn boundary, now
11817 PPC64_TPREL16_LO which is at low-order half-word. */
11818 rel->r_offset += d_offset;
11819 r_type = R_PPC64_TPREL16_LO;
11820 if (toc_symndx != 0)
11822 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11823 rel->r_addend = toc_addend;
11824 /* We changed the symbol. Start over in order to
11825 get h, sym, sec etc. right. */
11830 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11834 case R_PPC64_GOT_TLSGD16_HI:
11835 case R_PPC64_GOT_TLSGD16_HA:
11836 tls_gd = TLS_TPRELGD;
11837 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11841 case R_PPC64_GOT_TLSLD16_HI:
11842 case R_PPC64_GOT_TLSLD16_HA:
11843 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11846 if ((tls_mask & tls_gd) != 0)
11847 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11848 + R_PPC64_GOT_TPREL16_DS);
11851 rel->r_offset -= d_offset;
11852 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11853 r_type = R_PPC64_NONE;
11855 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11859 case R_PPC64_GOT_TLSGD16:
11860 case R_PPC64_GOT_TLSGD16_LO:
11861 tls_gd = TLS_TPRELGD;
11862 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11866 case R_PPC64_GOT_TLSLD16:
11867 case R_PPC64_GOT_TLSLD16_LO:
11868 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11870 unsigned int insn1, insn2, insn3;
11874 offset = (bfd_vma) -1;
11875 /* If not using the newer R_PPC64_TLSGD/LD to mark
11876 __tls_get_addr calls, we must trust that the call
11877 stays with its arg setup insns, ie. that the next
11878 reloc is the __tls_get_addr call associated with
11879 the current reloc. Edit both insns. */
11880 if (input_section->has_tls_get_addr_call
11881 && rel + 1 < relend
11882 && branch_reloc_hash_match (input_bfd, rel + 1,
11883 htab->tls_get_addr,
11884 htab->tls_get_addr_fd))
11885 offset = rel[1].r_offset;
11886 if ((tls_mask & tls_gd) != 0)
11889 insn1 = bfd_get_32 (output_bfd,
11890 contents + rel->r_offset - d_offset);
11891 insn1 &= (1 << 26) - (1 << 2);
11892 insn1 |= 58 << 26; /* ld */
11893 insn2 = 0x7c636a14; /* add 3,3,13 */
11894 if (offset != (bfd_vma) -1)
11895 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11896 if ((tls_mask & TLS_EXPLICIT) == 0)
11897 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11898 + R_PPC64_GOT_TPREL16_DS);
11900 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
11901 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11906 insn1 = 0x3c6d0000; /* addis 3,13,0 */
11907 insn2 = 0x38630000; /* addi 3,3,0 */
11910 /* Was an LD reloc. */
11912 sec = local_sections[toc_symndx];
11914 r_symndx < symtab_hdr->sh_info;
11916 if (local_sections[r_symndx] == sec)
11918 if (r_symndx >= symtab_hdr->sh_info)
11920 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11922 rel->r_addend -= (local_syms[r_symndx].st_value
11923 + sec->output_offset
11924 + sec->output_section->vma);
11926 else if (toc_symndx != 0)
11928 r_symndx = toc_symndx;
11929 rel->r_addend = toc_addend;
11931 r_type = R_PPC64_TPREL16_HA;
11932 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11933 if (offset != (bfd_vma) -1)
11935 rel[1].r_info = ELF64_R_INFO (r_symndx,
11936 R_PPC64_TPREL16_LO);
11937 rel[1].r_offset = offset + d_offset;
11938 rel[1].r_addend = rel->r_addend;
11941 bfd_put_32 (output_bfd, insn1,
11942 contents + rel->r_offset - d_offset);
11943 if (offset != (bfd_vma) -1)
11945 insn3 = bfd_get_32 (output_bfd,
11946 contents + offset + 4);
11948 || insn3 == CROR_151515 || insn3 == CROR_313131)
11950 rel[1].r_offset += 4;
11951 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11954 bfd_put_32 (output_bfd, insn2, contents + offset);
11956 if ((tls_mask & tls_gd) == 0
11957 && (tls_gd == 0 || toc_symndx != 0))
11959 /* We changed the symbol. Start over in order
11960 to get h, sym, sec etc. right. */
11967 case R_PPC64_TLSGD:
11968 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11970 unsigned int insn2, insn3;
11971 bfd_vma offset = rel->r_offset;
11973 if ((tls_mask & TLS_TPRELGD) != 0)
11976 r_type = R_PPC64_NONE;
11977 insn2 = 0x7c636a14; /* add 3,3,13 */
11982 if (toc_symndx != 0)
11984 r_symndx = toc_symndx;
11985 rel->r_addend = toc_addend;
11987 r_type = R_PPC64_TPREL16_LO;
11988 rel->r_offset = offset + d_offset;
11989 insn2 = 0x38630000; /* addi 3,3,0 */
11991 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11992 /* Zap the reloc on the _tls_get_addr call too. */
11993 BFD_ASSERT (offset == rel[1].r_offset);
11994 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11995 insn3 = bfd_get_32 (output_bfd,
11996 contents + offset + 4);
11998 || insn3 == CROR_151515 || insn3 == CROR_313131)
12000 rel->r_offset += 4;
12001 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12004 bfd_put_32 (output_bfd, insn2, contents + offset);
12005 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12013 case R_PPC64_TLSLD:
12014 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12016 unsigned int insn2, insn3;
12017 bfd_vma offset = rel->r_offset;
12020 sec = local_sections[toc_symndx];
12022 r_symndx < symtab_hdr->sh_info;
12024 if (local_sections[r_symndx] == sec)
12026 if (r_symndx >= symtab_hdr->sh_info)
12028 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12030 rel->r_addend -= (local_syms[r_symndx].st_value
12031 + sec->output_offset
12032 + sec->output_section->vma);
12034 r_type = R_PPC64_TPREL16_LO;
12035 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12036 rel->r_offset = offset + d_offset;
12037 /* Zap the reloc on the _tls_get_addr call too. */
12038 BFD_ASSERT (offset == rel[1].r_offset);
12039 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12040 insn2 = 0x38630000; /* addi 3,3,0 */
12041 insn3 = bfd_get_32 (output_bfd,
12042 contents + offset + 4);
12044 || insn3 == CROR_151515 || insn3 == CROR_313131)
12046 rel->r_offset += 4;
12047 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12050 bfd_put_32 (output_bfd, insn2, contents + offset);
12056 case R_PPC64_DTPMOD64:
12057 if (rel + 1 < relend
12058 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12059 && rel[1].r_offset == rel->r_offset + 8)
12061 if ((tls_mask & TLS_GD) == 0)
12063 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12064 if ((tls_mask & TLS_TPRELGD) != 0)
12065 r_type = R_PPC64_TPREL64;
12068 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12069 r_type = R_PPC64_NONE;
12071 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12076 if ((tls_mask & TLS_LD) == 0)
12078 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12079 r_type = R_PPC64_NONE;
12080 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12085 case R_PPC64_TPREL64:
12086 if ((tls_mask & TLS_TPREL) == 0)
12088 r_type = R_PPC64_NONE;
12089 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12094 /* Handle other relocations that tweak non-addend part of insn. */
12096 max_br_offset = 1 << 25;
12097 addend = rel->r_addend;
12103 /* Branch taken prediction relocations. */
12104 case R_PPC64_ADDR14_BRTAKEN:
12105 case R_PPC64_REL14_BRTAKEN:
12106 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12109 /* Branch not taken prediction relocations. */
12110 case R_PPC64_ADDR14_BRNTAKEN:
12111 case R_PPC64_REL14_BRNTAKEN:
12112 insn |= bfd_get_32 (output_bfd,
12113 contents + rel->r_offset) & ~(0x01 << 21);
12116 case R_PPC64_REL14:
12117 max_br_offset = 1 << 15;
12120 case R_PPC64_REL24:
12121 /* Calls to functions with a different TOC, such as calls to
12122 shared objects, need to alter the TOC pointer. This is
12123 done using a linkage stub. A REL24 branching to these
12124 linkage stubs needs to be followed by a nop, as the nop
12125 will be replaced with an instruction to restore the TOC
12130 && h->oh->is_func_descriptor)
12131 fdh = ppc_follow_link (h->oh);
12132 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12133 if (stub_entry != NULL
12134 && (stub_entry->stub_type == ppc_stub_plt_call
12135 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12136 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
12138 bfd_boolean can_plt_call = FALSE;
12140 if (rel->r_offset + 8 <= input_section->size)
12143 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12145 || nop == CROR_151515 || nop == CROR_313131)
12148 && (h == htab->tls_get_addr_fd
12149 || h == htab->tls_get_addr)
12150 && !htab->no_tls_get_addr_opt)
12152 /* Special stub used, leave nop alone. */
12155 bfd_put_32 (input_bfd, LD_R2_40R1,
12156 contents + rel->r_offset + 4);
12157 can_plt_call = TRUE;
12163 if (stub_entry->stub_type == ppc_stub_plt_call)
12165 /* If this is a plain branch rather than a branch
12166 and link, don't require a nop. However, don't
12167 allow tail calls in a shared library as they
12168 will result in r2 being corrupted. */
12170 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
12171 if (info->executable && (br & 1) == 0)
12172 can_plt_call = TRUE;
12177 && strcmp (h->elf.root.root.string,
12178 ".__libc_start_main") == 0)
12180 /* Allow crt1 branch to go via a toc adjusting stub. */
12181 can_plt_call = TRUE;
12185 if (strcmp (input_section->output_section->name,
12187 || strcmp (input_section->output_section->name,
12189 (*_bfd_error_handler)
12190 (_("%B(%A+0x%lx): automatic multiple TOCs "
12191 "not supported using your crt files; "
12192 "recompile with -mminimal-toc or upgrade gcc"),
12195 (long) rel->r_offset);
12197 (*_bfd_error_handler)
12198 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
12199 "does not allow automatic multiple TOCs; "
12200 "recompile with -mminimal-toc or "
12201 "-fno-optimize-sibling-calls, "
12202 "or make `%s' extern"),
12205 (long) rel->r_offset,
12208 bfd_set_error (bfd_error_bad_value);
12214 && stub_entry->stub_type == ppc_stub_plt_call)
12215 unresolved_reloc = FALSE;
12218 if ((stub_entry == NULL
12219 || stub_entry->stub_type == ppc_stub_long_branch
12220 || stub_entry->stub_type == ppc_stub_plt_branch)
12221 && get_opd_info (sec) != NULL)
12223 /* The branch destination is the value of the opd entry. */
12224 bfd_vma off = (relocation + addend
12225 - sec->output_section->vma
12226 - sec->output_offset);
12227 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
12228 if (dest != (bfd_vma) -1)
12235 /* If the branch is out of reach we ought to have a long
12237 from = (rel->r_offset
12238 + input_section->output_offset
12239 + input_section->output_section->vma);
12241 if (stub_entry != NULL
12242 && (stub_entry->stub_type == ppc_stub_long_branch
12243 || stub_entry->stub_type == ppc_stub_plt_branch)
12244 && (r_type == R_PPC64_ADDR14_BRTAKEN
12245 || r_type == R_PPC64_ADDR14_BRNTAKEN
12246 || (relocation + addend - from + max_br_offset
12247 < 2 * max_br_offset)))
12248 /* Don't use the stub if this branch is in range. */
12251 if (stub_entry != NULL)
12253 /* Munge up the value and addend so that we call the stub
12254 rather than the procedure directly. */
12255 relocation = (stub_entry->stub_offset
12256 + stub_entry->stub_sec->output_offset
12257 + stub_entry->stub_sec->output_section->vma);
12265 /* Set 'a' bit. This is 0b00010 in BO field for branch
12266 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12267 for branch on CTR insns (BO == 1a00t or 1a01t). */
12268 if ((insn & (0x14 << 21)) == (0x04 << 21))
12269 insn |= 0x02 << 21;
12270 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12271 insn |= 0x08 << 21;
12277 /* Invert 'y' bit if not the default. */
12278 if ((bfd_signed_vma) (relocation + addend - from) < 0)
12279 insn ^= 0x01 << 21;
12282 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12285 /* NOP out calls to undefined weak functions.
12286 We can thus call a weak function without first
12287 checking whether the function is defined. */
12289 && h->elf.root.type == bfd_link_hash_undefweak
12290 && h->elf.dynindx == -1
12291 && r_type == R_PPC64_REL24
12295 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12301 /* Set `addend'. */
12306 (*_bfd_error_handler)
12307 (_("%B: unknown relocation type %d for symbol %s"),
12308 input_bfd, (int) r_type, sym_name);
12310 bfd_set_error (bfd_error_bad_value);
12316 case R_PPC64_TLSGD:
12317 case R_PPC64_TLSLD:
12318 case R_PPC64_GNU_VTINHERIT:
12319 case R_PPC64_GNU_VTENTRY:
12322 /* GOT16 relocations. Like an ADDR16 using the symbol's
12323 address in the GOT as relocation value instead of the
12324 symbol's value itself. Also, create a GOT entry for the
12325 symbol and put the symbol value there. */
12326 case R_PPC64_GOT_TLSGD16:
12327 case R_PPC64_GOT_TLSGD16_LO:
12328 case R_PPC64_GOT_TLSGD16_HI:
12329 case R_PPC64_GOT_TLSGD16_HA:
12330 tls_type = TLS_TLS | TLS_GD;
12333 case R_PPC64_GOT_TLSLD16:
12334 case R_PPC64_GOT_TLSLD16_LO:
12335 case R_PPC64_GOT_TLSLD16_HI:
12336 case R_PPC64_GOT_TLSLD16_HA:
12337 tls_type = TLS_TLS | TLS_LD;
12340 case R_PPC64_GOT_TPREL16_DS:
12341 case R_PPC64_GOT_TPREL16_LO_DS:
12342 case R_PPC64_GOT_TPREL16_HI:
12343 case R_PPC64_GOT_TPREL16_HA:
12344 tls_type = TLS_TLS | TLS_TPREL;
12347 case R_PPC64_GOT_DTPREL16_DS:
12348 case R_PPC64_GOT_DTPREL16_LO_DS:
12349 case R_PPC64_GOT_DTPREL16_HI:
12350 case R_PPC64_GOT_DTPREL16_HA:
12351 tls_type = TLS_TLS | TLS_DTPREL;
12354 case R_PPC64_GOT16:
12355 case R_PPC64_GOT16_LO:
12356 case R_PPC64_GOT16_HI:
12357 case R_PPC64_GOT16_HA:
12358 case R_PPC64_GOT16_DS:
12359 case R_PPC64_GOT16_LO_DS:
12362 /* Relocation is to the entry for this symbol in the global
12367 unsigned long indx = 0;
12368 struct got_entry *ent;
12370 if (tls_type == (TLS_TLS | TLS_LD)
12372 || !h->elf.def_dynamic))
12373 ent = ppc64_tlsld_got (input_bfd);
12379 bfd_boolean dyn = htab->elf.dynamic_sections_created;
12380 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
12383 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
12384 /* This is actually a static link, or it is a
12385 -Bsymbolic link and the symbol is defined
12386 locally, or the symbol was forced to be local
12387 because of a version file. */
12391 indx = h->elf.dynindx;
12392 unresolved_reloc = FALSE;
12394 ent = h->elf.got.glist;
12398 if (local_got_ents == NULL)
12400 ent = local_got_ents[r_symndx];
12403 for (; ent != NULL; ent = ent->next)
12404 if (ent->addend == orig_addend
12405 && ent->owner == input_bfd
12406 && ent->tls_type == tls_type)
12412 if (ent->is_indirect)
12413 ent = ent->got.ent;
12414 offp = &ent->got.offset;
12415 got = ppc64_elf_tdata (ent->owner)->got;
12419 /* The offset must always be a multiple of 8. We use the
12420 least significant bit to record whether we have already
12421 processed this entry. */
12423 if ((off & 1) != 0)
12427 /* Generate relocs for the dynamic linker, except in
12428 the case of TLSLD where we'll use one entry per
12436 ? h->elf.type == STT_GNU_IFUNC
12437 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
12438 if ((info->shared || indx != 0)
12440 || (tls_type == (TLS_TLS | TLS_LD)
12441 && !h->elf.def_dynamic)
12442 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12443 || h->elf.root.type != bfd_link_hash_undefweak))
12444 relgot = ppc64_elf_tdata (ent->owner)->relgot;
12446 relgot = htab->reliplt;
12447 if (relgot != NULL)
12449 outrel.r_offset = (got->output_section->vma
12450 + got->output_offset
12452 outrel.r_addend = addend;
12453 if (tls_type & (TLS_LD | TLS_GD))
12455 outrel.r_addend = 0;
12456 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
12457 if (tls_type == (TLS_TLS | TLS_GD))
12459 loc = relgot->contents;
12460 loc += (relgot->reloc_count++
12461 * sizeof (Elf64_External_Rela));
12462 bfd_elf64_swap_reloca_out (output_bfd,
12464 outrel.r_offset += 8;
12465 outrel.r_addend = addend;
12467 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12470 else if (tls_type == (TLS_TLS | TLS_DTPREL))
12471 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12472 else if (tls_type == (TLS_TLS | TLS_TPREL))
12473 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
12474 else if (indx != 0)
12475 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
12479 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12481 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12483 /* Write the .got section contents for the sake
12485 loc = got->contents + off;
12486 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
12490 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
12492 outrel.r_addend += relocation;
12493 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
12494 outrel.r_addend -= htab->elf.tls_sec->vma;
12496 loc = relgot->contents;
12497 loc += (relgot->reloc_count++
12498 * sizeof (Elf64_External_Rela));
12499 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12502 /* Init the .got section contents here if we're not
12503 emitting a reloc. */
12506 relocation += addend;
12507 if (tls_type == (TLS_TLS | TLS_LD))
12509 else if (tls_type != 0)
12511 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
12512 if (tls_type == (TLS_TLS | TLS_TPREL))
12513 relocation += DTP_OFFSET - TP_OFFSET;
12515 if (tls_type == (TLS_TLS | TLS_GD))
12517 bfd_put_64 (output_bfd, relocation,
12518 got->contents + off + 8);
12523 bfd_put_64 (output_bfd, relocation,
12524 got->contents + off);
12528 if (off >= (bfd_vma) -2)
12531 relocation = got->output_section->vma + got->output_offset + off;
12532 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
12536 case R_PPC64_PLT16_HA:
12537 case R_PPC64_PLT16_HI:
12538 case R_PPC64_PLT16_LO:
12539 case R_PPC64_PLT32:
12540 case R_PPC64_PLT64:
12541 /* Relocation is to the entry for this symbol in the
12542 procedure linkage table. */
12544 /* Resolve a PLT reloc against a local symbol directly,
12545 without using the procedure linkage table. */
12549 /* It's possible that we didn't make a PLT entry for this
12550 symbol. This happens when statically linking PIC code,
12551 or when using -Bsymbolic. Go find a match if there is a
12553 if (htab->plt != NULL)
12555 struct plt_entry *ent;
12556 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
12557 if (ent->addend == orig_addend
12558 && ent->plt.offset != (bfd_vma) -1)
12560 relocation = (htab->plt->output_section->vma
12561 + htab->plt->output_offset
12562 + ent->plt.offset);
12563 unresolved_reloc = FALSE;
12569 /* Relocation value is TOC base. */
12570 relocation = TOCstart;
12572 relocation += htab->stub_group[input_section->id].toc_off;
12573 else if (unresolved_reloc)
12575 else if (sec != NULL && sec->id <= htab->top_id)
12576 relocation += htab->stub_group[sec->id].toc_off;
12578 unresolved_reloc = TRUE;
12581 /* TOC16 relocs. We want the offset relative to the TOC base,
12582 which is the address of the start of the TOC plus 0x8000.
12583 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12585 case R_PPC64_TOC16:
12586 case R_PPC64_TOC16_LO:
12587 case R_PPC64_TOC16_HI:
12588 case R_PPC64_TOC16_DS:
12589 case R_PPC64_TOC16_LO_DS:
12590 case R_PPC64_TOC16_HA:
12591 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
12594 /* Relocate against the beginning of the section. */
12595 case R_PPC64_SECTOFF:
12596 case R_PPC64_SECTOFF_LO:
12597 case R_PPC64_SECTOFF_HI:
12598 case R_PPC64_SECTOFF_DS:
12599 case R_PPC64_SECTOFF_LO_DS:
12600 case R_PPC64_SECTOFF_HA:
12602 addend -= sec->output_section->vma;
12605 case R_PPC64_REL16:
12606 case R_PPC64_REL16_LO:
12607 case R_PPC64_REL16_HI:
12608 case R_PPC64_REL16_HA:
12611 case R_PPC64_REL14:
12612 case R_PPC64_REL14_BRNTAKEN:
12613 case R_PPC64_REL14_BRTAKEN:
12614 case R_PPC64_REL24:
12617 case R_PPC64_TPREL16:
12618 case R_PPC64_TPREL16_LO:
12619 case R_PPC64_TPREL16_HI:
12620 case R_PPC64_TPREL16_HA:
12621 case R_PPC64_TPREL16_DS:
12622 case R_PPC64_TPREL16_LO_DS:
12623 case R_PPC64_TPREL16_HIGHER:
12624 case R_PPC64_TPREL16_HIGHERA:
12625 case R_PPC64_TPREL16_HIGHEST:
12626 case R_PPC64_TPREL16_HIGHESTA:
12628 && h->elf.root.type == bfd_link_hash_undefweak
12629 && h->elf.dynindx == -1)
12631 /* Make this relocation against an undefined weak symbol
12632 resolve to zero. This is really just a tweak, since
12633 code using weak externs ought to check that they are
12634 defined before using them. */
12635 bfd_byte *p = contents + rel->r_offset - d_offset;
12637 insn = bfd_get_32 (output_bfd, p);
12638 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
12640 bfd_put_32 (output_bfd, insn, p);
12643 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12645 /* The TPREL16 relocs shouldn't really be used in shared
12646 libs as they will result in DT_TEXTREL being set, but
12647 support them anyway. */
12651 case R_PPC64_DTPREL16:
12652 case R_PPC64_DTPREL16_LO:
12653 case R_PPC64_DTPREL16_HI:
12654 case R_PPC64_DTPREL16_HA:
12655 case R_PPC64_DTPREL16_DS:
12656 case R_PPC64_DTPREL16_LO_DS:
12657 case R_PPC64_DTPREL16_HIGHER:
12658 case R_PPC64_DTPREL16_HIGHERA:
12659 case R_PPC64_DTPREL16_HIGHEST:
12660 case R_PPC64_DTPREL16_HIGHESTA:
12661 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12664 case R_PPC64_DTPMOD64:
12669 case R_PPC64_TPREL64:
12670 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12673 case R_PPC64_DTPREL64:
12674 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12677 /* Relocations that may need to be propagated if this is a
12679 case R_PPC64_REL30:
12680 case R_PPC64_REL32:
12681 case R_PPC64_REL64:
12682 case R_PPC64_ADDR14:
12683 case R_PPC64_ADDR14_BRNTAKEN:
12684 case R_PPC64_ADDR14_BRTAKEN:
12685 case R_PPC64_ADDR16:
12686 case R_PPC64_ADDR16_DS:
12687 case R_PPC64_ADDR16_HA:
12688 case R_PPC64_ADDR16_HI:
12689 case R_PPC64_ADDR16_HIGHER:
12690 case R_PPC64_ADDR16_HIGHERA:
12691 case R_PPC64_ADDR16_HIGHEST:
12692 case R_PPC64_ADDR16_HIGHESTA:
12693 case R_PPC64_ADDR16_LO:
12694 case R_PPC64_ADDR16_LO_DS:
12695 case R_PPC64_ADDR24:
12696 case R_PPC64_ADDR32:
12697 case R_PPC64_ADDR64:
12698 case R_PPC64_UADDR16:
12699 case R_PPC64_UADDR32:
12700 case R_PPC64_UADDR64:
12702 if ((input_section->flags & SEC_ALLOC) == 0)
12705 if (NO_OPD_RELOCS && is_opd)
12710 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12711 || h->elf.root.type != bfd_link_hash_undefweak)
12712 && (must_be_dyn_reloc (info, r_type)
12713 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
12714 || (ELIMINATE_COPY_RELOCS
12717 && h->elf.dynindx != -1
12718 && !h->elf.non_got_ref
12719 && !h->elf.def_regular)
12722 ? h->elf.type == STT_GNU_IFUNC
12723 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
12725 bfd_boolean skip, relocate;
12729 /* When generating a dynamic object, these relocations
12730 are copied into the output file to be resolved at run
12736 out_off = _bfd_elf_section_offset (output_bfd, info,
12737 input_section, rel->r_offset);
12738 if (out_off == (bfd_vma) -1)
12740 else if (out_off == (bfd_vma) -2)
12741 skip = TRUE, relocate = TRUE;
12742 out_off += (input_section->output_section->vma
12743 + input_section->output_offset);
12744 outrel.r_offset = out_off;
12745 outrel.r_addend = rel->r_addend;
12747 /* Optimize unaligned reloc use. */
12748 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
12749 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
12750 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
12751 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
12752 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
12753 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
12754 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
12755 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
12756 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
12759 memset (&outrel, 0, sizeof outrel);
12760 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
12762 && r_type != R_PPC64_TOC)
12763 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
12766 /* This symbol is local, or marked to become local,
12767 or this is an opd section reloc which must point
12768 at a local function. */
12769 outrel.r_addend += relocation;
12770 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
12772 if (is_opd && h != NULL)
12774 /* Lie about opd entries. This case occurs
12775 when building shared libraries and we
12776 reference a function in another shared
12777 lib. The same thing happens for a weak
12778 definition in an application that's
12779 overridden by a strong definition in a
12780 shared lib. (I believe this is a generic
12781 bug in binutils handling of weak syms.)
12782 In these cases we won't use the opd
12783 entry in this lib. */
12784 unresolved_reloc = FALSE;
12787 && r_type == R_PPC64_ADDR64
12789 ? h->elf.type == STT_GNU_IFUNC
12790 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
12791 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12794 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12796 /* We need to relocate .opd contents for ld.so.
12797 Prelink also wants simple and consistent rules
12798 for relocs. This make all RELATIVE relocs have
12799 *r_offset equal to r_addend. */
12808 ? h->elf.type == STT_GNU_IFUNC
12809 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
12811 (*_bfd_error_handler)
12812 (_("%B(%A+0x%lx): relocation %s for indirect "
12813 "function %s unsupported"),
12816 (long) rel->r_offset,
12817 ppc64_elf_howto_table[r_type]->name,
12821 else if (r_symndx == 0 || bfd_is_abs_section (sec))
12823 else if (sec == NULL || sec->owner == NULL)
12825 bfd_set_error (bfd_error_bad_value);
12832 osec = sec->output_section;
12833 indx = elf_section_data (osec)->dynindx;
12837 if ((osec->flags & SEC_READONLY) == 0
12838 && htab->elf.data_index_section != NULL)
12839 osec = htab->elf.data_index_section;
12841 osec = htab->elf.text_index_section;
12842 indx = elf_section_data (osec)->dynindx;
12844 BFD_ASSERT (indx != 0);
12846 /* We are turning this relocation into one
12847 against a section symbol, so subtract out
12848 the output section's address but not the
12849 offset of the input section in the output
12851 outrel.r_addend -= osec->vma;
12854 outrel.r_info = ELF64_R_INFO (indx, r_type);
12858 sreloc = elf_section_data (input_section)->sreloc;
12859 if (!htab->elf.dynamic_sections_created)
12860 sreloc = htab->reliplt;
12861 if (sreloc == NULL)
12864 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
12867 loc = sreloc->contents;
12868 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
12869 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12871 /* If this reloc is against an external symbol, it will
12872 be computed at runtime, so there's no need to do
12873 anything now. However, for the sake of prelink ensure
12874 that the section contents are a known value. */
12877 unresolved_reloc = FALSE;
12878 /* The value chosen here is quite arbitrary as ld.so
12879 ignores section contents except for the special
12880 case of .opd where the contents might be accessed
12881 before relocation. Choose zero, as that won't
12882 cause reloc overflow. */
12885 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12886 to improve backward compatibility with older
12888 if (r_type == R_PPC64_ADDR64)
12889 addend = outrel.r_addend;
12890 /* Adjust pc_relative relocs to have zero in *r_offset. */
12891 else if (ppc64_elf_howto_table[r_type]->pc_relative)
12892 addend = (input_section->output_section->vma
12893 + input_section->output_offset
12900 case R_PPC64_GLOB_DAT:
12901 case R_PPC64_JMP_SLOT:
12902 case R_PPC64_JMP_IREL:
12903 case R_PPC64_RELATIVE:
12904 /* We shouldn't ever see these dynamic relocs in relocatable
12906 /* Fall through. */
12908 case R_PPC64_PLTGOT16:
12909 case R_PPC64_PLTGOT16_DS:
12910 case R_PPC64_PLTGOT16_HA:
12911 case R_PPC64_PLTGOT16_HI:
12912 case R_PPC64_PLTGOT16_LO:
12913 case R_PPC64_PLTGOT16_LO_DS:
12914 case R_PPC64_PLTREL32:
12915 case R_PPC64_PLTREL64:
12916 /* These ones haven't been implemented yet. */
12918 (*_bfd_error_handler)
12919 (_("%B: relocation %s is not supported for symbol %s."),
12921 ppc64_elf_howto_table[r_type]->name, sym_name);
12923 bfd_set_error (bfd_error_invalid_operation);
12928 /* Multi-instruction sequences that access the TOC can be
12929 optimized, eg. addis ra,r2,0; addi rb,ra,x;
12930 to nop; addi rb,r2,x; */
12936 case R_PPC64_GOT_TLSLD16_HI:
12937 case R_PPC64_GOT_TLSGD16_HI:
12938 case R_PPC64_GOT_TPREL16_HI:
12939 case R_PPC64_GOT_DTPREL16_HI:
12940 case R_PPC64_GOT16_HI:
12941 case R_PPC64_TOC16_HI:
12942 /* These relocs would only be useful if building up an
12943 offset to later add to r2, perhaps in an indexed
12944 addressing mode instruction. Don't try to optimize.
12945 Unfortunately, the possibility of someone building up an
12946 offset like this or even with the HA relocs, means that
12947 we need to check the high insn when optimizing the low
12951 case R_PPC64_GOT_TLSLD16_HA:
12952 case R_PPC64_GOT_TLSGD16_HA:
12953 case R_PPC64_GOT_TPREL16_HA:
12954 case R_PPC64_GOT_DTPREL16_HA:
12955 case R_PPC64_GOT16_HA:
12956 case R_PPC64_TOC16_HA:
12957 /* nop is done later. */
12960 case R_PPC64_GOT_TLSLD16_LO:
12961 case R_PPC64_GOT_TLSGD16_LO:
12962 case R_PPC64_GOT_TPREL16_LO_DS:
12963 case R_PPC64_GOT_DTPREL16_LO_DS:
12964 case R_PPC64_GOT16_LO:
12965 case R_PPC64_GOT16_LO_DS:
12966 case R_PPC64_TOC16_LO:
12967 case R_PPC64_TOC16_LO_DS:
12968 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000)
12970 bfd_byte *p = contents + (rel->r_offset & ~3);
12971 insn = bfd_get_32 (input_bfd, p);
12972 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
12973 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
12974 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
12975 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
12976 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
12977 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
12978 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
12979 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
12980 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
12981 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
12982 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
12983 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
12984 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
12985 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
12986 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
12987 && (insn & 3) != 1)
12988 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
12989 && ((insn & 3) == 0 || (insn & 3) == 3)))
12991 unsigned int reg = (insn >> 16) & 0x1f;
12992 const Elf_Internal_Rela *ha;
12993 bfd_boolean match_addend;
12995 match_addend = (sym != NULL
12996 && ELF_ST_TYPE (sym->st_info) == STT_SECTION);
12997 ha = ha_reloc_match (relocs, rel, ®, match_addend,
12998 input_bfd, contents);
13001 insn &= ~(0x1f << 16);
13003 bfd_put_32 (input_bfd, insn, p);
13004 if (ha_opt == NULL)
13006 ha_opt = bfd_zmalloc (input_section->reloc_count);
13007 if (ha_opt == NULL)
13010 ha_opt[ha - relocs] = 1;
13013 /* If we don't find a matching high part insn,
13014 something is fishy. Refuse to nop any high
13015 part insn in this section. */
13022 /* Do any further special processing. */
13028 case R_PPC64_ADDR16_HA:
13029 case R_PPC64_REL16_HA:
13030 case R_PPC64_ADDR16_HIGHERA:
13031 case R_PPC64_ADDR16_HIGHESTA:
13032 case R_PPC64_TOC16_HA:
13033 case R_PPC64_SECTOFF_HA:
13034 case R_PPC64_TPREL16_HA:
13035 case R_PPC64_DTPREL16_HA:
13036 case R_PPC64_TPREL16_HIGHER:
13037 case R_PPC64_TPREL16_HIGHERA:
13038 case R_PPC64_TPREL16_HIGHEST:
13039 case R_PPC64_TPREL16_HIGHESTA:
13040 case R_PPC64_DTPREL16_HIGHER:
13041 case R_PPC64_DTPREL16_HIGHERA:
13042 case R_PPC64_DTPREL16_HIGHEST:
13043 case R_PPC64_DTPREL16_HIGHESTA:
13044 /* It's just possible that this symbol is a weak symbol
13045 that's not actually defined anywhere. In that case,
13046 'sec' would be NULL, and we should leave the symbol
13047 alone (it will be set to zero elsewhere in the link). */
13052 case R_PPC64_GOT16_HA:
13053 case R_PPC64_PLTGOT16_HA:
13054 case R_PPC64_PLT16_HA:
13055 case R_PPC64_GOT_TLSGD16_HA:
13056 case R_PPC64_GOT_TLSLD16_HA:
13057 case R_PPC64_GOT_TPREL16_HA:
13058 case R_PPC64_GOT_DTPREL16_HA:
13059 /* Add 0x10000 if sign bit in 0:15 is set.
13060 Bits 0:15 are not used. */
13064 case R_PPC64_ADDR16_DS:
13065 case R_PPC64_ADDR16_LO_DS:
13066 case R_PPC64_GOT16_DS:
13067 case R_PPC64_GOT16_LO_DS:
13068 case R_PPC64_PLT16_LO_DS:
13069 case R_PPC64_SECTOFF_DS:
13070 case R_PPC64_SECTOFF_LO_DS:
13071 case R_PPC64_TOC16_DS:
13072 case R_PPC64_TOC16_LO_DS:
13073 case R_PPC64_PLTGOT16_DS:
13074 case R_PPC64_PLTGOT16_LO_DS:
13075 case R_PPC64_GOT_TPREL16_DS:
13076 case R_PPC64_GOT_TPREL16_LO_DS:
13077 case R_PPC64_GOT_DTPREL16_DS:
13078 case R_PPC64_GOT_DTPREL16_LO_DS:
13079 case R_PPC64_TPREL16_DS:
13080 case R_PPC64_TPREL16_LO_DS:
13081 case R_PPC64_DTPREL16_DS:
13082 case R_PPC64_DTPREL16_LO_DS:
13083 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13085 /* If this reloc is against an lq insn, then the value must be
13086 a multiple of 16. This is somewhat of a hack, but the
13087 "correct" way to do this by defining _DQ forms of all the
13088 _DS relocs bloats all reloc switches in this file. It
13089 doesn't seem to make much sense to use any of these relocs
13090 in data, so testing the insn should be safe. */
13091 if ((insn & (0x3f << 26)) == (56u << 26))
13093 if (((relocation + addend) & mask) != 0)
13095 (*_bfd_error_handler)
13096 (_("%B: error: relocation %s not a multiple of %d"),
13098 ppc64_elf_howto_table[r_type]->name,
13100 bfd_set_error (bfd_error_bad_value);
13107 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13108 because such sections are not SEC_ALLOC and thus ld.so will
13109 not process them. */
13110 if (unresolved_reloc
13111 && !((input_section->flags & SEC_DEBUGGING) != 0
13112 && h->elf.def_dynamic))
13114 (*_bfd_error_handler)
13115 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
13118 (long) rel->r_offset,
13119 ppc64_elf_howto_table[(int) r_type]->name,
13120 h->elf.root.root.string);
13124 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
13132 if (r != bfd_reloc_ok)
13134 if (sym_name == NULL)
13135 sym_name = "(null)";
13136 if (r == bfd_reloc_overflow)
13141 && h->elf.root.type == bfd_link_hash_undefweak
13142 && ppc64_elf_howto_table[r_type]->pc_relative)
13144 /* Assume this is a call protected by other code that
13145 detects the symbol is undefined. If this is the case,
13146 we can safely ignore the overflow. If not, the
13147 program is hosed anyway, and a little warning isn't
13153 if (!((*info->callbacks->reloc_overflow)
13154 (info, (h ? &h->elf.root : NULL), sym_name,
13155 ppc64_elf_howto_table[r_type]->name,
13156 orig_addend, input_bfd, input_section, rel->r_offset)))
13161 (*_bfd_error_handler)
13162 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
13165 (long) rel->r_offset,
13166 ppc64_elf_howto_table[r_type]->name,
13174 if (ha_opt != NULL)
13178 unsigned char *opt = ha_opt;
13180 relend = relocs + input_section->reloc_count;
13181 for (; rel < relend; opt++, rel++)
13184 bfd_byte *p = contents + (rel->r_offset & ~3);
13185 bfd_put_32 (input_bfd, NOP, p);
13191 /* If we're emitting relocations, then shortly after this function
13192 returns, reloc offsets and addends for this section will be
13193 adjusted. Worse, reloc symbol indices will be for the output
13194 file rather than the input. Save a copy of the relocs for
13195 opd_entry_value. */
13196 if (is_opd && (info->emitrelocations || info->relocatable))
13199 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13200 rel = bfd_alloc (input_bfd, amt);
13201 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13202 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13205 memcpy (rel, relocs, amt);
13210 /* Adjust the value of any local symbols in opd sections. */
13213 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13214 const char *name ATTRIBUTE_UNUSED,
13215 Elf_Internal_Sym *elfsym,
13216 asection *input_sec,
13217 struct elf_link_hash_entry *h)
13219 struct _opd_sec_data *opd;
13226 opd = get_opd_info (input_sec);
13227 if (opd == NULL || opd->adjust == NULL)
13230 value = elfsym->st_value - input_sec->output_offset;
13231 if (!info->relocatable)
13232 value -= input_sec->output_section->vma;
13234 adjust = opd->adjust[value / 8];
13238 elfsym->st_value += adjust;
13242 /* Finish up dynamic symbol handling. We set the contents of various
13243 dynamic sections here. */
13246 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13247 struct bfd_link_info *info,
13248 struct elf_link_hash_entry *h,
13249 Elf_Internal_Sym *sym)
13251 struct ppc_link_hash_table *htab;
13252 struct plt_entry *ent;
13253 Elf_Internal_Rela rela;
13256 htab = ppc_hash_table (info);
13260 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13261 if (ent->plt.offset != (bfd_vma) -1)
13263 /* This symbol has an entry in the procedure linkage
13264 table. Set it up. */
13265 if (!htab->elf.dynamic_sections_created
13266 || h->dynindx == -1)
13268 BFD_ASSERT (h->type == STT_GNU_IFUNC
13270 && (h->root.type == bfd_link_hash_defined
13271 || h->root.type == bfd_link_hash_defweak));
13272 rela.r_offset = (htab->iplt->output_section->vma
13273 + htab->iplt->output_offset
13274 + ent->plt.offset);
13275 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13276 rela.r_addend = (h->root.u.def.value
13277 + h->root.u.def.section->output_offset
13278 + h->root.u.def.section->output_section->vma
13280 loc = (htab->reliplt->contents
13281 + (htab->reliplt->reloc_count++
13282 * sizeof (Elf64_External_Rela)));
13286 rela.r_offset = (htab->plt->output_section->vma
13287 + htab->plt->output_offset
13288 + ent->plt.offset);
13289 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13290 rela.r_addend = ent->addend;
13291 loc = (htab->relplt->contents
13292 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13293 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
13295 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13300 /* This symbol needs a copy reloc. Set it up. */
13302 if (h->dynindx == -1
13303 || (h->root.type != bfd_link_hash_defined
13304 && h->root.type != bfd_link_hash_defweak)
13305 || htab->relbss == NULL)
13308 rela.r_offset = (h->root.u.def.value
13309 + h->root.u.def.section->output_section->vma
13310 + h->root.u.def.section->output_offset);
13311 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13313 loc = htab->relbss->contents;
13314 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
13315 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13318 /* Mark some specially defined symbols as absolute. */
13319 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
13320 sym->st_shndx = SHN_ABS;
13325 /* Used to decide how to sort relocs in an optimal manner for the
13326 dynamic linker, before writing them out. */
13328 static enum elf_reloc_type_class
13329 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
13331 enum elf_ppc64_reloc_type r_type;
13333 r_type = ELF64_R_TYPE (rela->r_info);
13336 case R_PPC64_RELATIVE:
13337 return reloc_class_relative;
13338 case R_PPC64_JMP_SLOT:
13339 return reloc_class_plt;
13341 return reloc_class_copy;
13343 return reloc_class_normal;
13347 /* Finish up the dynamic sections. */
13350 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
13351 struct bfd_link_info *info)
13353 struct ppc_link_hash_table *htab;
13357 htab = ppc_hash_table (info);
13361 dynobj = htab->elf.dynobj;
13362 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
13364 if (htab->elf.dynamic_sections_created)
13366 Elf64_External_Dyn *dyncon, *dynconend;
13368 if (sdyn == NULL || htab->got == NULL)
13371 dyncon = (Elf64_External_Dyn *) sdyn->contents;
13372 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
13373 for (; dyncon < dynconend; dyncon++)
13375 Elf_Internal_Dyn dyn;
13378 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
13385 case DT_PPC64_GLINK:
13387 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13388 /* We stupidly defined DT_PPC64_GLINK to be the start
13389 of glink rather than the first entry point, which is
13390 what ld.so needs, and now have a bigger stub to
13391 support automatic multiple TOCs. */
13392 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
13396 s = bfd_get_section_by_name (output_bfd, ".opd");
13399 dyn.d_un.d_ptr = s->vma;
13402 case DT_PPC64_OPDSZ:
13403 s = bfd_get_section_by_name (output_bfd, ".opd");
13406 dyn.d_un.d_val = s->size;
13411 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13416 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13420 dyn.d_un.d_val = htab->relplt->size;
13424 /* Don't count procedure linkage table relocs in the
13425 overall reloc count. */
13429 dyn.d_un.d_val -= s->size;
13433 /* We may not be using the standard ELF linker script.
13434 If .rela.plt is the first .rela section, we adjust
13435 DT_RELA to not include it. */
13439 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
13441 dyn.d_un.d_ptr += s->size;
13445 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
13449 if (htab->got != NULL && htab->got->size != 0)
13451 /* Fill in the first entry in the global offset table.
13452 We use it to hold the link-time TOCbase. */
13453 bfd_put_64 (output_bfd,
13454 elf_gp (output_bfd) + TOC_BASE_OFF,
13455 htab->got->contents);
13457 /* Set .got entry size. */
13458 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
13461 if (htab->plt != NULL && htab->plt->size != 0)
13463 /* Set .plt entry size. */
13464 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
13468 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13469 brlt ourselves if emitrelocations. */
13470 if (htab->brlt != NULL
13471 && htab->brlt->reloc_count != 0
13472 && !_bfd_elf_link_output_relocs (output_bfd,
13474 &elf_section_data (htab->brlt)->rel_hdr,
13475 elf_section_data (htab->brlt)->relocs,
13479 if (htab->glink != NULL
13480 && htab->glink->reloc_count != 0
13481 && !_bfd_elf_link_output_relocs (output_bfd,
13483 &elf_section_data (htab->glink)->rel_hdr,
13484 elf_section_data (htab->glink)->relocs,
13488 /* We need to handle writing out multiple GOT sections ourselves,
13489 since we didn't add them to DYNOBJ. We know dynobj is the first
13491 while ((dynobj = dynobj->link_next) != NULL)
13495 if (!is_ppc64_elf (dynobj))
13498 s = ppc64_elf_tdata (dynobj)->got;
13501 && s->output_section != bfd_abs_section_ptr
13502 && !bfd_set_section_contents (output_bfd, s->output_section,
13503 s->contents, s->output_offset,
13506 s = ppc64_elf_tdata (dynobj)->relgot;
13509 && s->output_section != bfd_abs_section_ptr
13510 && !bfd_set_section_contents (output_bfd, s->output_section,
13511 s->contents, s->output_offset,
13519 #include "elf64-target.h"