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, **sym_hashes_end;
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);
4878 sym_hashes = elf_sym_hashes (abfd);
4879 sym_hashes_end = (sym_hashes
4880 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4881 - symtab_hdr->sh_info);
4885 if (strcmp (sec->name, ".opd") == 0)
4887 /* Garbage collection needs some extra help with .opd sections.
4888 We don't want to necessarily keep everything referenced by
4889 relocs in .opd, as that would keep all functions. Instead,
4890 if we reference an .opd symbol (a function descriptor), we
4891 want to keep the function code symbol's section. This is
4892 easy for global symbols, but for local syms we need to keep
4893 information about the associated function section. */
4896 amt = sec->size * sizeof (*opd_sym_map) / 8;
4897 opd_sym_map = bfd_zalloc (abfd, amt);
4898 if (opd_sym_map == NULL)
4900 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4901 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4902 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4905 if (htab->sfpr == NULL
4906 && !create_linkage_sections (htab->elf.dynobj, info))
4909 rel_end = relocs + sec->reloc_count;
4910 for (rel = relocs; rel < rel_end; rel++)
4912 unsigned long r_symndx;
4913 struct elf_link_hash_entry *h;
4914 enum elf_ppc64_reloc_type r_type;
4916 struct _ppc64_elf_section_data *ppc64_sec;
4917 struct plt_entry **ifunc;
4919 r_symndx = ELF64_R_SYM (rel->r_info);
4920 if (r_symndx < symtab_hdr->sh_info)
4924 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4925 h = elf_follow_link (h);
4932 if (h->type == STT_GNU_IFUNC)
4935 ifunc = &h->plt.plist;
4940 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4945 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4947 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4948 rel->r_addend, PLT_IFUNC);
4953 r_type = ELF64_R_TYPE (rel->r_info);
4954 if (is_branch_reloc (r_type))
4956 if (h != NULL && (h == tga || h == dottga))
4959 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
4960 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
4961 /* We have a new-style __tls_get_addr call with a marker
4965 /* Mark this section as having an old-style call. */
4966 sec->has_tls_get_addr_call = 1;
4969 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4971 && !update_plt_info (abfd, ifunc, rel->r_addend))
4979 /* These special tls relocs tie a call to __tls_get_addr with
4980 its parameter symbol. */
4983 case R_PPC64_GOT_TLSLD16:
4984 case R_PPC64_GOT_TLSLD16_LO:
4985 case R_PPC64_GOT_TLSLD16_HI:
4986 case R_PPC64_GOT_TLSLD16_HA:
4987 tls_type = TLS_TLS | TLS_LD;
4990 case R_PPC64_GOT_TLSGD16:
4991 case R_PPC64_GOT_TLSGD16_LO:
4992 case R_PPC64_GOT_TLSGD16_HI:
4993 case R_PPC64_GOT_TLSGD16_HA:
4994 tls_type = TLS_TLS | TLS_GD;
4997 case R_PPC64_GOT_TPREL16_DS:
4998 case R_PPC64_GOT_TPREL16_LO_DS:
4999 case R_PPC64_GOT_TPREL16_HI:
5000 case R_PPC64_GOT_TPREL16_HA:
5001 if (!info->executable)
5002 info->flags |= DF_STATIC_TLS;
5003 tls_type = TLS_TLS | TLS_TPREL;
5006 case R_PPC64_GOT_DTPREL16_DS:
5007 case R_PPC64_GOT_DTPREL16_LO_DS:
5008 case R_PPC64_GOT_DTPREL16_HI:
5009 case R_PPC64_GOT_DTPREL16_HA:
5010 tls_type = TLS_TLS | TLS_DTPREL;
5012 sec->has_tls_reloc = 1;
5016 case R_PPC64_GOT16_DS:
5017 case R_PPC64_GOT16_HA:
5018 case R_PPC64_GOT16_HI:
5019 case R_PPC64_GOT16_LO:
5020 case R_PPC64_GOT16_LO_DS:
5021 /* This symbol requires a global offset table entry. */
5022 sec->has_toc_reloc = 1;
5023 if (r_type == R_PPC64_GOT_TLSLD16
5024 || r_type == R_PPC64_GOT_TLSGD16
5025 || r_type == R_PPC64_GOT_TPREL16_DS
5026 || r_type == R_PPC64_GOT_DTPREL16_DS
5027 || r_type == R_PPC64_GOT16
5028 || r_type == R_PPC64_GOT16_DS)
5030 htab->do_multi_toc = 1;
5031 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5034 if (ppc64_elf_tdata (abfd)->got == NULL
5035 && !create_got_section (abfd, info))
5040 struct ppc_link_hash_entry *eh;
5041 struct got_entry *ent;
5043 eh = (struct ppc_link_hash_entry *) h;
5044 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5045 if (ent->addend == rel->r_addend
5046 && ent->owner == abfd
5047 && ent->tls_type == tls_type)
5051 bfd_size_type amt = sizeof (*ent);
5052 ent = bfd_alloc (abfd, amt);
5055 ent->next = eh->elf.got.glist;
5056 ent->addend = rel->r_addend;
5058 ent->tls_type = tls_type;
5059 ent->is_indirect = FALSE;
5060 ent->got.refcount = 0;
5061 eh->elf.got.glist = ent;
5063 ent->got.refcount += 1;
5064 eh->tls_mask |= tls_type;
5067 /* This is a global offset table entry for a local symbol. */
5068 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5069 rel->r_addend, tls_type))
5073 case R_PPC64_PLT16_HA:
5074 case R_PPC64_PLT16_HI:
5075 case R_PPC64_PLT16_LO:
5078 /* This symbol requires a procedure linkage table entry. We
5079 actually build the entry in adjust_dynamic_symbol,
5080 because this might be a case of linking PIC code without
5081 linking in any dynamic objects, in which case we don't
5082 need to generate a procedure linkage table after all. */
5085 /* It does not make sense to have a procedure linkage
5086 table entry for a local symbol. */
5087 bfd_set_error (bfd_error_bad_value);
5092 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5095 if (h->root.root.string[0] == '.'
5096 && h->root.root.string[1] != '\0')
5097 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5101 /* The following relocations don't need to propagate the
5102 relocation if linking a shared object since they are
5103 section relative. */
5104 case R_PPC64_SECTOFF:
5105 case R_PPC64_SECTOFF_LO:
5106 case R_PPC64_SECTOFF_HI:
5107 case R_PPC64_SECTOFF_HA:
5108 case R_PPC64_SECTOFF_DS:
5109 case R_PPC64_SECTOFF_LO_DS:
5110 case R_PPC64_DTPREL16:
5111 case R_PPC64_DTPREL16_LO:
5112 case R_PPC64_DTPREL16_HI:
5113 case R_PPC64_DTPREL16_HA:
5114 case R_PPC64_DTPREL16_DS:
5115 case R_PPC64_DTPREL16_LO_DS:
5116 case R_PPC64_DTPREL16_HIGHER:
5117 case R_PPC64_DTPREL16_HIGHERA:
5118 case R_PPC64_DTPREL16_HIGHEST:
5119 case R_PPC64_DTPREL16_HIGHESTA:
5124 case R_PPC64_REL16_LO:
5125 case R_PPC64_REL16_HI:
5126 case R_PPC64_REL16_HA:
5130 case R_PPC64_TOC16_DS:
5131 htab->do_multi_toc = 1;
5132 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5133 case R_PPC64_TOC16_LO:
5134 case R_PPC64_TOC16_HI:
5135 case R_PPC64_TOC16_HA:
5136 case R_PPC64_TOC16_LO_DS:
5137 sec->has_toc_reloc = 1;
5140 /* This relocation describes the C++ object vtable hierarchy.
5141 Reconstruct it for later use during GC. */
5142 case R_PPC64_GNU_VTINHERIT:
5143 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5147 /* This relocation describes which C++ vtable entries are actually
5148 used. Record for later use during GC. */
5149 case R_PPC64_GNU_VTENTRY:
5150 BFD_ASSERT (h != NULL);
5152 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5157 case R_PPC64_REL14_BRTAKEN:
5158 case R_PPC64_REL14_BRNTAKEN:
5160 asection *dest = NULL;
5162 /* Heuristic: If jumping outside our section, chances are
5163 we are going to need a stub. */
5166 /* If the sym is weak it may be overridden later, so
5167 don't assume we know where a weak sym lives. */
5168 if (h->root.type == bfd_link_hash_defined)
5169 dest = h->root.u.def.section;
5173 Elf_Internal_Sym *isym;
5175 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5180 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5184 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5189 if (h != NULL && ifunc == NULL)
5191 /* We may need a .plt entry if the function this reloc
5192 refers to is in a shared lib. */
5193 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5196 if (h->root.root.string[0] == '.'
5197 && h->root.root.string[1] != '\0')
5198 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5199 if (h == tga || h == dottga)
5200 sec->has_tls_reloc = 1;
5204 case R_PPC64_TPREL64:
5205 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5206 if (!info->executable)
5207 info->flags |= DF_STATIC_TLS;
5210 case R_PPC64_DTPMOD64:
5211 if (rel + 1 < rel_end
5212 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5213 && rel[1].r_offset == rel->r_offset + 8)
5214 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5216 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5219 case R_PPC64_DTPREL64:
5220 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5222 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5223 && rel[-1].r_offset == rel->r_offset - 8)
5224 /* This is the second reloc of a dtpmod, dtprel pair.
5225 Don't mark with TLS_DTPREL. */
5229 sec->has_tls_reloc = 1;
5232 struct ppc_link_hash_entry *eh;
5233 eh = (struct ppc_link_hash_entry *) h;
5234 eh->tls_mask |= tls_type;
5237 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5238 rel->r_addend, tls_type))
5241 ppc64_sec = ppc64_elf_section_data (sec);
5242 if (ppc64_sec->sec_type != sec_toc)
5246 /* One extra to simplify get_tls_mask. */
5247 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5248 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5249 if (ppc64_sec->u.toc.symndx == NULL)
5251 amt = sec->size * sizeof (bfd_vma) / 8;
5252 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5253 if (ppc64_sec->u.toc.add == NULL)
5255 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5256 ppc64_sec->sec_type = sec_toc;
5258 BFD_ASSERT (rel->r_offset % 8 == 0);
5259 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5260 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5262 /* Mark the second slot of a GD or LD entry.
5263 -1 to indicate GD and -2 to indicate LD. */
5264 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5265 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5266 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5267 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5270 case R_PPC64_TPREL16:
5271 case R_PPC64_TPREL16_LO:
5272 case R_PPC64_TPREL16_HI:
5273 case R_PPC64_TPREL16_HA:
5274 case R_PPC64_TPREL16_DS:
5275 case R_PPC64_TPREL16_LO_DS:
5276 case R_PPC64_TPREL16_HIGHER:
5277 case R_PPC64_TPREL16_HIGHERA:
5278 case R_PPC64_TPREL16_HIGHEST:
5279 case R_PPC64_TPREL16_HIGHESTA:
5282 if (!info->executable)
5283 info->flags |= DF_STATIC_TLS;
5288 case R_PPC64_ADDR64:
5289 if (opd_sym_map != NULL
5290 && rel + 1 < rel_end
5291 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5295 if (h->root.root.string[0] == '.'
5296 && h->root.root.string[1] != 0
5297 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5300 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5305 Elf_Internal_Sym *isym;
5307 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5312 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5313 if (s != NULL && s != sec)
5314 opd_sym_map[rel->r_offset / 8] = s;
5322 case R_PPC64_ADDR14:
5323 case R_PPC64_ADDR14_BRNTAKEN:
5324 case R_PPC64_ADDR14_BRTAKEN:
5325 case R_PPC64_ADDR16:
5326 case R_PPC64_ADDR16_DS:
5327 case R_PPC64_ADDR16_HA:
5328 case R_PPC64_ADDR16_HI:
5329 case R_PPC64_ADDR16_HIGHER:
5330 case R_PPC64_ADDR16_HIGHERA:
5331 case R_PPC64_ADDR16_HIGHEST:
5332 case R_PPC64_ADDR16_HIGHESTA:
5333 case R_PPC64_ADDR16_LO:
5334 case R_PPC64_ADDR16_LO_DS:
5335 case R_PPC64_ADDR24:
5336 case R_PPC64_ADDR32:
5337 case R_PPC64_UADDR16:
5338 case R_PPC64_UADDR32:
5339 case R_PPC64_UADDR64:
5341 if (h != NULL && !info->shared)
5342 /* We may need a copy reloc. */
5345 /* Don't propagate .opd relocs. */
5346 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5349 /* If we are creating a shared library, and this is a reloc
5350 against a global symbol, or a non PC relative reloc
5351 against a local symbol, then we need to copy the reloc
5352 into the shared library. However, if we are linking with
5353 -Bsymbolic, we do not need to copy a reloc against a
5354 global symbol which is defined in an object we are
5355 including in the link (i.e., DEF_REGULAR is set). At
5356 this point we have not seen all the input files, so it is
5357 possible that DEF_REGULAR is not set now but will be set
5358 later (it is never cleared). In case of a weak definition,
5359 DEF_REGULAR may be cleared later by a strong definition in
5360 a shared library. We account for that possibility below by
5361 storing information in the dyn_relocs field of the hash
5362 table entry. A similar situation occurs when creating
5363 shared libraries and symbol visibility changes render the
5366 If on the other hand, we are creating an executable, we
5367 may need to keep relocations for symbols satisfied by a
5368 dynamic library if we manage to avoid copy relocs for the
5372 && (must_be_dyn_reloc (info, r_type)
5374 && (! info->symbolic
5375 || h->root.type == bfd_link_hash_defweak
5376 || !h->def_regular))))
5377 || (ELIMINATE_COPY_RELOCS
5380 && (h->root.type == bfd_link_hash_defweak
5381 || !h->def_regular))
5385 struct ppc_dyn_relocs *p;
5386 struct ppc_dyn_relocs **head;
5388 /* We must copy these reloc types into the output file.
5389 Create a reloc section in dynobj and make room for
5393 sreloc = _bfd_elf_make_dynamic_reloc_section
5394 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5400 /* If this is a global symbol, we count the number of
5401 relocations we need for this symbol. */
5404 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5408 /* Track dynamic relocs needed for local syms too.
5409 We really need local syms available to do this
5413 Elf_Internal_Sym *isym;
5415 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5420 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5424 vpp = &elf_section_data (s)->local_dynrel;
5425 head = (struct ppc_dyn_relocs **) vpp;
5429 if (p == NULL || p->sec != sec)
5431 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5442 if (!must_be_dyn_reloc (info, r_type))
5455 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5456 of the code entry point, and its section. */
5459 opd_entry_value (asection *opd_sec,
5461 asection **code_sec,
5464 bfd *opd_bfd = opd_sec->owner;
5465 Elf_Internal_Rela *relocs;
5466 Elf_Internal_Rela *lo, *hi, *look;
5469 /* No relocs implies we are linking a --just-symbols object. */
5470 if (opd_sec->reloc_count == 0)
5472 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
5473 return (bfd_vma) -1;
5475 if (code_sec != NULL)
5477 asection *sec, *likely = NULL;
5478 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5480 && (sec->flags & SEC_LOAD) != 0
5481 && (sec->flags & SEC_ALLOC) != 0)
5486 if (code_off != NULL)
5487 *code_off = val - likely->vma;
5493 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5495 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5497 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5499 /* Go find the opd reloc at the sym address. */
5501 BFD_ASSERT (lo != NULL);
5502 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5506 look = lo + (hi - lo) / 2;
5507 if (look->r_offset < offset)
5509 else if (look->r_offset > offset)
5513 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5515 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5516 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5518 unsigned long symndx = ELF64_R_SYM (look->r_info);
5521 if (symndx < symtab_hdr->sh_info)
5523 Elf_Internal_Sym *sym;
5525 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5528 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5529 symtab_hdr->sh_info,
5530 0, NULL, NULL, NULL);
5533 symtab_hdr->contents = (bfd_byte *) sym;
5537 val = sym->st_value;
5538 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5539 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5543 struct elf_link_hash_entry **sym_hashes;
5544 struct elf_link_hash_entry *rh;
5546 sym_hashes = elf_sym_hashes (opd_bfd);
5547 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5548 rh = elf_follow_link (rh);
5549 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5550 || rh->root.type == bfd_link_hash_defweak);
5551 val = rh->root.u.def.value;
5552 sec = rh->root.u.def.section;
5554 val += look->r_addend;
5555 if (code_off != NULL)
5557 if (code_sec != NULL)
5559 if (sec != NULL && sec->output_section != NULL)
5560 val += sec->output_section->vma + sec->output_offset;
5569 /* If FDH is a function descriptor symbol, return the associated code
5570 entry symbol if it is defined. Return NULL otherwise. */
5572 static struct ppc_link_hash_entry *
5573 defined_code_entry (struct ppc_link_hash_entry *fdh)
5575 if (fdh->is_func_descriptor)
5577 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5578 if (fh->elf.root.type == bfd_link_hash_defined
5579 || fh->elf.root.type == bfd_link_hash_defweak)
5585 /* If FH is a function code entry symbol, return the associated
5586 function descriptor symbol if it is defined. Return NULL otherwise. */
5588 static struct ppc_link_hash_entry *
5589 defined_func_desc (struct ppc_link_hash_entry *fh)
5592 && fh->oh->is_func_descriptor)
5594 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5595 if (fdh->elf.root.type == bfd_link_hash_defined
5596 || fdh->elf.root.type == bfd_link_hash_defweak)
5602 /* Mark all our entry sym sections, both opd and code section. */
5605 ppc64_elf_gc_keep (struct bfd_link_info *info)
5607 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5608 struct bfd_sym_chain *sym;
5613 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5615 struct ppc_link_hash_entry *eh, *fh;
5618 eh = (struct ppc_link_hash_entry *)
5619 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5622 if (eh->elf.root.type != bfd_link_hash_defined
5623 && eh->elf.root.type != bfd_link_hash_defweak)
5626 fh = defined_code_entry (eh);
5629 sec = fh->elf.root.u.def.section;
5630 sec->flags |= SEC_KEEP;
5632 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5633 && opd_entry_value (eh->elf.root.u.def.section,
5634 eh->elf.root.u.def.value,
5635 &sec, NULL) != (bfd_vma) -1)
5636 sec->flags |= SEC_KEEP;
5638 sec = eh->elf.root.u.def.section;
5639 sec->flags |= SEC_KEEP;
5643 /* Mark sections containing dynamically referenced symbols. When
5644 building shared libraries, we must assume that any visible symbol is
5648 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5650 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5651 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5652 struct ppc_link_hash_entry *fdh;
5654 if (eh->elf.root.type == bfd_link_hash_warning)
5655 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5657 /* Dynamic linking info is on the func descriptor sym. */
5658 fdh = defined_func_desc (eh);
5662 if ((eh->elf.root.type == bfd_link_hash_defined
5663 || eh->elf.root.type == bfd_link_hash_defweak)
5664 && (eh->elf.ref_dynamic
5665 || (!info->executable
5666 && eh->elf.def_regular
5667 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5668 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5671 struct ppc_link_hash_entry *fh;
5673 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5675 /* Function descriptor syms cause the associated
5676 function code sym section to be marked. */
5677 fh = defined_code_entry (eh);
5680 code_sec = fh->elf.root.u.def.section;
5681 code_sec->flags |= SEC_KEEP;
5683 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5684 && opd_entry_value (eh->elf.root.u.def.section,
5685 eh->elf.root.u.def.value,
5686 &code_sec, NULL) != (bfd_vma) -1)
5687 code_sec->flags |= SEC_KEEP;
5693 /* Return the section that should be marked against GC for a given
5697 ppc64_elf_gc_mark_hook (asection *sec,
5698 struct bfd_link_info *info,
5699 Elf_Internal_Rela *rel,
5700 struct elf_link_hash_entry *h,
5701 Elf_Internal_Sym *sym)
5705 /* Syms return NULL if we're marking .opd, so we avoid marking all
5706 function sections, as all functions are referenced in .opd. */
5708 if (get_opd_info (sec) != NULL)
5713 enum elf_ppc64_reloc_type r_type;
5714 struct ppc_link_hash_entry *eh, *fh, *fdh;
5716 r_type = ELF64_R_TYPE (rel->r_info);
5719 case R_PPC64_GNU_VTINHERIT:
5720 case R_PPC64_GNU_VTENTRY:
5724 switch (h->root.type)
5726 case bfd_link_hash_defined:
5727 case bfd_link_hash_defweak:
5728 eh = (struct ppc_link_hash_entry *) h;
5729 fdh = defined_func_desc (eh);
5733 /* Function descriptor syms cause the associated
5734 function code sym section to be marked. */
5735 fh = defined_code_entry (eh);
5738 /* They also mark their opd section. */
5739 eh->elf.root.u.def.section->gc_mark = 1;
5741 rsec = fh->elf.root.u.def.section;
5743 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5744 && opd_entry_value (eh->elf.root.u.def.section,
5745 eh->elf.root.u.def.value,
5746 &rsec, NULL) != (bfd_vma) -1)
5747 eh->elf.root.u.def.section->gc_mark = 1;
5749 rsec = h->root.u.def.section;
5752 case bfd_link_hash_common:
5753 rsec = h->root.u.c.p->section;
5757 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5763 struct _opd_sec_data *opd;
5765 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5766 opd = get_opd_info (rsec);
5767 if (opd != NULL && opd->func_sec != NULL)
5771 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5778 /* Update the .got, .plt. and dynamic reloc reference counts for the
5779 section being removed. */
5782 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5783 asection *sec, const Elf_Internal_Rela *relocs)
5785 struct ppc_link_hash_table *htab;
5786 Elf_Internal_Shdr *symtab_hdr;
5787 struct elf_link_hash_entry **sym_hashes;
5788 struct got_entry **local_got_ents;
5789 const Elf_Internal_Rela *rel, *relend;
5791 if (info->relocatable)
5794 if ((sec->flags & SEC_ALLOC) == 0)
5797 elf_section_data (sec)->local_dynrel = NULL;
5799 htab = ppc_hash_table (info);
5803 symtab_hdr = &elf_symtab_hdr (abfd);
5804 sym_hashes = elf_sym_hashes (abfd);
5805 local_got_ents = elf_local_got_ents (abfd);
5807 relend = relocs + sec->reloc_count;
5808 for (rel = relocs; rel < relend; rel++)
5810 unsigned long r_symndx;
5811 enum elf_ppc64_reloc_type r_type;
5812 struct elf_link_hash_entry *h = NULL;
5813 unsigned char tls_type = 0;
5815 r_symndx = ELF64_R_SYM (rel->r_info);
5816 r_type = ELF64_R_TYPE (rel->r_info);
5817 if (r_symndx >= symtab_hdr->sh_info)
5819 struct ppc_link_hash_entry *eh;
5820 struct ppc_dyn_relocs **pp;
5821 struct ppc_dyn_relocs *p;
5823 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5824 h = elf_follow_link (h);
5825 eh = (struct ppc_link_hash_entry *) h;
5827 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5830 /* Everything must go for SEC. */
5836 if (is_branch_reloc (r_type))
5838 struct plt_entry **ifunc = NULL;
5841 if (h->type == STT_GNU_IFUNC)
5842 ifunc = &h->plt.plist;
5844 else if (local_got_ents != NULL)
5846 struct plt_entry **local_plt = (struct plt_entry **)
5847 (local_got_ents + symtab_hdr->sh_info);
5848 unsigned char *local_got_tls_masks = (unsigned char *)
5849 (local_plt + symtab_hdr->sh_info);
5850 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5851 ifunc = local_plt + r_symndx;
5855 struct plt_entry *ent;
5857 for (ent = *ifunc; ent != NULL; ent = ent->next)
5858 if (ent->addend == rel->r_addend)
5862 if (ent->plt.refcount > 0)
5863 ent->plt.refcount -= 1;
5870 case R_PPC64_GOT_TLSLD16:
5871 case R_PPC64_GOT_TLSLD16_LO:
5872 case R_PPC64_GOT_TLSLD16_HI:
5873 case R_PPC64_GOT_TLSLD16_HA:
5874 tls_type = TLS_TLS | TLS_LD;
5877 case R_PPC64_GOT_TLSGD16:
5878 case R_PPC64_GOT_TLSGD16_LO:
5879 case R_PPC64_GOT_TLSGD16_HI:
5880 case R_PPC64_GOT_TLSGD16_HA:
5881 tls_type = TLS_TLS | TLS_GD;
5884 case R_PPC64_GOT_TPREL16_DS:
5885 case R_PPC64_GOT_TPREL16_LO_DS:
5886 case R_PPC64_GOT_TPREL16_HI:
5887 case R_PPC64_GOT_TPREL16_HA:
5888 tls_type = TLS_TLS | TLS_TPREL;
5891 case R_PPC64_GOT_DTPREL16_DS:
5892 case R_PPC64_GOT_DTPREL16_LO_DS:
5893 case R_PPC64_GOT_DTPREL16_HI:
5894 case R_PPC64_GOT_DTPREL16_HA:
5895 tls_type = TLS_TLS | TLS_DTPREL;
5899 case R_PPC64_GOT16_DS:
5900 case R_PPC64_GOT16_HA:
5901 case R_PPC64_GOT16_HI:
5902 case R_PPC64_GOT16_LO:
5903 case R_PPC64_GOT16_LO_DS:
5906 struct got_entry *ent;
5911 ent = local_got_ents[r_symndx];
5913 for (; ent != NULL; ent = ent->next)
5914 if (ent->addend == rel->r_addend
5915 && ent->owner == abfd
5916 && ent->tls_type == tls_type)
5920 if (ent->got.refcount > 0)
5921 ent->got.refcount -= 1;
5925 case R_PPC64_PLT16_HA:
5926 case R_PPC64_PLT16_HI:
5927 case R_PPC64_PLT16_LO:
5931 case R_PPC64_REL14_BRNTAKEN:
5932 case R_PPC64_REL14_BRTAKEN:
5936 struct plt_entry *ent;
5938 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5939 if (ent->addend == rel->r_addend)
5941 if (ent != NULL && ent->plt.refcount > 0)
5942 ent->plt.refcount -= 1;
5953 /* The maximum size of .sfpr. */
5954 #define SFPR_MAX (218*4)
5956 struct sfpr_def_parms
5958 const char name[12];
5959 unsigned char lo, hi;
5960 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5961 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5964 /* Auto-generate _save*, _rest* functions in .sfpr. */
5967 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5969 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5971 size_t len = strlen (parm->name);
5972 bfd_boolean writing = FALSE;
5978 memcpy (sym, parm->name, len);
5981 for (i = parm->lo; i <= parm->hi; i++)
5983 struct elf_link_hash_entry *h;
5985 sym[len + 0] = i / 10 + '0';
5986 sym[len + 1] = i % 10 + '0';
5987 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5991 h->root.type = bfd_link_hash_defined;
5992 h->root.u.def.section = htab->sfpr;
5993 h->root.u.def.value = htab->sfpr->size;
5996 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5998 if (htab->sfpr->contents == NULL)
6000 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6001 if (htab->sfpr->contents == NULL)
6007 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6009 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6011 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6012 htab->sfpr->size = p - htab->sfpr->contents;
6020 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6022 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6027 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6029 p = savegpr0 (abfd, p, r);
6030 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6032 bfd_put_32 (abfd, BLR, p);
6037 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6039 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6044 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6046 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6048 p = restgpr0 (abfd, p, r);
6049 bfd_put_32 (abfd, MTLR_R0, p);
6053 p = restgpr0 (abfd, p, 30);
6054 p = restgpr0 (abfd, p, 31);
6056 bfd_put_32 (abfd, BLR, p);
6061 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6063 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6068 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6070 p = savegpr1 (abfd, p, r);
6071 bfd_put_32 (abfd, BLR, p);
6076 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6078 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6083 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6085 p = restgpr1 (abfd, p, r);
6086 bfd_put_32 (abfd, BLR, p);
6091 savefpr (bfd *abfd, bfd_byte *p, int r)
6093 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6098 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6100 p = savefpr (abfd, p, r);
6101 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6103 bfd_put_32 (abfd, BLR, p);
6108 restfpr (bfd *abfd, bfd_byte *p, int r)
6110 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6115 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6117 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6119 p = restfpr (abfd, p, r);
6120 bfd_put_32 (abfd, MTLR_R0, p);
6124 p = restfpr (abfd, p, 30);
6125 p = restfpr (abfd, p, 31);
6127 bfd_put_32 (abfd, BLR, p);
6132 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6134 p = savefpr (abfd, p, r);
6135 bfd_put_32 (abfd, BLR, p);
6140 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6142 p = restfpr (abfd, p, r);
6143 bfd_put_32 (abfd, BLR, p);
6148 savevr (bfd *abfd, bfd_byte *p, int r)
6150 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6152 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6157 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6159 p = savevr (abfd, p, r);
6160 bfd_put_32 (abfd, BLR, p);
6165 restvr (bfd *abfd, bfd_byte *p, int r)
6167 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6169 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6174 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6176 p = restvr (abfd, p, r);
6177 bfd_put_32 (abfd, BLR, p);
6181 /* Called via elf_link_hash_traverse to transfer dynamic linking
6182 information on function code symbol entries to their corresponding
6183 function descriptor symbol entries. */
6186 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6188 struct bfd_link_info *info;
6189 struct ppc_link_hash_table *htab;
6190 struct plt_entry *ent;
6191 struct ppc_link_hash_entry *fh;
6192 struct ppc_link_hash_entry *fdh;
6193 bfd_boolean force_local;
6195 fh = (struct ppc_link_hash_entry *) h;
6196 if (fh->elf.root.type == bfd_link_hash_indirect)
6199 if (fh->elf.root.type == bfd_link_hash_warning)
6200 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
6203 htab = ppc_hash_table (info);
6207 /* Resolve undefined references to dot-symbols as the value
6208 in the function descriptor, if we have one in a regular object.
6209 This is to satisfy cases like ".quad .foo". Calls to functions
6210 in dynamic objects are handled elsewhere. */
6211 if (fh->elf.root.type == bfd_link_hash_undefweak
6212 && fh->was_undefined
6213 && (fdh = defined_func_desc (fh)) != NULL
6214 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6215 && opd_entry_value (fdh->elf.root.u.def.section,
6216 fdh->elf.root.u.def.value,
6217 &fh->elf.root.u.def.section,
6218 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6220 fh->elf.root.type = fdh->elf.root.type;
6221 fh->elf.forced_local = 1;
6222 fh->elf.def_regular = fdh->elf.def_regular;
6223 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6226 /* If this is a function code symbol, transfer dynamic linking
6227 information to the function descriptor symbol. */
6231 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6232 if (ent->plt.refcount > 0)
6235 || fh->elf.root.root.string[0] != '.'
6236 || fh->elf.root.root.string[1] == '\0')
6239 /* Find the corresponding function descriptor symbol. Create it
6240 as undefined if necessary. */
6242 fdh = lookup_fdh (fh, htab);
6244 && !info->executable
6245 && (fh->elf.root.type == bfd_link_hash_undefined
6246 || fh->elf.root.type == bfd_link_hash_undefweak))
6248 fdh = make_fdh (info, fh);
6253 /* Fake function descriptors are made undefweak. If the function
6254 code symbol is strong undefined, make the fake sym the same.
6255 If the function code symbol is defined, then force the fake
6256 descriptor local; We can't support overriding of symbols in a
6257 shared library on a fake descriptor. */
6261 && fdh->elf.root.type == bfd_link_hash_undefweak)
6263 if (fh->elf.root.type == bfd_link_hash_undefined)
6265 fdh->elf.root.type = bfd_link_hash_undefined;
6266 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6268 else if (fh->elf.root.type == bfd_link_hash_defined
6269 || fh->elf.root.type == bfd_link_hash_defweak)
6271 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6276 && !fdh->elf.forced_local
6277 && (!info->executable
6278 || fdh->elf.def_dynamic
6279 || fdh->elf.ref_dynamic
6280 || (fdh->elf.root.type == bfd_link_hash_undefweak
6281 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6283 if (fdh->elf.dynindx == -1)
6284 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6286 fdh->elf.ref_regular |= fh->elf.ref_regular;
6287 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6288 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6289 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6290 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6292 move_plt_plist (fh, fdh);
6293 fdh->elf.needs_plt = 1;
6295 fdh->is_func_descriptor = 1;
6300 /* Now that the info is on the function descriptor, clear the
6301 function code sym info. Any function code syms for which we
6302 don't have a definition in a regular file, we force local.
6303 This prevents a shared library from exporting syms that have
6304 been imported from another library. Function code syms that
6305 are really in the library we must leave global to prevent the
6306 linker dragging in a definition from a static library. */
6307 force_local = (!fh->elf.def_regular
6309 || !fdh->elf.def_regular
6310 || fdh->elf.forced_local);
6311 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6316 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6317 this hook to a) provide some gcc support functions, and b) transfer
6318 dynamic linking information gathered so far on function code symbol
6319 entries, to their corresponding function descriptor symbol entries. */
6322 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6323 struct bfd_link_info *info)
6325 struct ppc_link_hash_table *htab;
6327 const struct sfpr_def_parms funcs[] =
6329 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6330 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6331 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6332 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6333 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6334 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6335 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6336 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6337 { "._savef", 14, 31, savefpr, savefpr1_tail },
6338 { "._restf", 14, 31, restfpr, restfpr1_tail },
6339 { "_savevr_", 20, 31, savevr, savevr_tail },
6340 { "_restvr_", 20, 31, restvr, restvr_tail }
6343 htab = ppc_hash_table (info);
6347 if (htab->sfpr == NULL)
6348 /* We don't have any relocs. */
6351 /* Provide any missing _save* and _rest* functions. */
6352 htab->sfpr->size = 0;
6353 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6354 if (!sfpr_define (info, &funcs[i]))
6357 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6359 if (htab->sfpr->size == 0)
6360 htab->sfpr->flags |= SEC_EXCLUDE;
6365 /* Adjust a symbol defined by a dynamic object and referenced by a
6366 regular object. The current definition is in some section of the
6367 dynamic object, but we're not including those sections. We have to
6368 change the definition to something the rest of the link can
6372 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6373 struct elf_link_hash_entry *h)
6375 struct ppc_link_hash_table *htab;
6378 htab = ppc_hash_table (info);
6382 /* Deal with function syms. */
6383 if (h->type == STT_FUNC
6384 || h->type == STT_GNU_IFUNC
6387 /* Clear procedure linkage table information for any symbol that
6388 won't need a .plt entry. */
6389 struct plt_entry *ent;
6390 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6391 if (ent->plt.refcount > 0)
6394 || (h->type != STT_GNU_IFUNC
6395 && (SYMBOL_CALLS_LOCAL (info, h)
6396 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6397 && h->root.type == bfd_link_hash_undefweak))))
6399 h->plt.plist = NULL;
6404 h->plt.plist = NULL;
6406 /* If this is a weak symbol, and there is a real definition, the
6407 processor independent code will have arranged for us to see the
6408 real definition first, and we can just use the same value. */
6409 if (h->u.weakdef != NULL)
6411 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6412 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6413 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6414 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6415 if (ELIMINATE_COPY_RELOCS)
6416 h->non_got_ref = h->u.weakdef->non_got_ref;
6420 /* If we are creating a shared library, we must presume that the
6421 only references to the symbol are via the global offset table.
6422 For such cases we need not do anything here; the relocations will
6423 be handled correctly by relocate_section. */
6427 /* If there are no references to this symbol that do not use the
6428 GOT, we don't need to generate a copy reloc. */
6429 if (!h->non_got_ref)
6432 /* Don't generate a copy reloc for symbols defined in the executable. */
6433 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6436 if (ELIMINATE_COPY_RELOCS)
6438 struct ppc_link_hash_entry * eh;
6439 struct ppc_dyn_relocs *p;
6441 eh = (struct ppc_link_hash_entry *) h;
6442 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6444 s = p->sec->output_section;
6445 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6449 /* If we didn't find any dynamic relocs in read-only sections, then
6450 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6458 if (h->plt.plist != NULL)
6460 /* We should never get here, but unfortunately there are versions
6461 of gcc out there that improperly (for this ABI) put initialized
6462 function pointers, vtable refs and suchlike in read-only
6463 sections. Allow them to proceed, but warn that this might
6464 break at runtime. */
6465 (*_bfd_error_handler)
6466 (_("copy reloc against `%s' requires lazy plt linking; "
6467 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6468 h->root.root.string);
6471 /* This is a reference to a symbol defined by a dynamic object which
6472 is not a function. */
6476 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6477 h->root.root.string);
6481 /* We must allocate the symbol in our .dynbss section, which will
6482 become part of the .bss section of the executable. There will be
6483 an entry for this symbol in the .dynsym section. The dynamic
6484 object will contain position independent code, so all references
6485 from the dynamic object to this symbol will go through the global
6486 offset table. The dynamic linker will use the .dynsym entry to
6487 determine the address it must put in the global offset table, so
6488 both the dynamic object and the regular object will refer to the
6489 same memory location for the variable. */
6491 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6492 to copy the initial value out of the dynamic object and into the
6493 runtime process image. We need to remember the offset into the
6494 .rela.bss section we are going to use. */
6495 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6497 htab->relbss->size += sizeof (Elf64_External_Rela);
6503 return _bfd_elf_adjust_dynamic_copy (h, s);
6506 /* If given a function descriptor symbol, hide both the function code
6507 sym and the descriptor. */
6509 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6510 struct elf_link_hash_entry *h,
6511 bfd_boolean force_local)
6513 struct ppc_link_hash_entry *eh;
6514 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6516 eh = (struct ppc_link_hash_entry *) h;
6517 if (eh->is_func_descriptor)
6519 struct ppc_link_hash_entry *fh = eh->oh;
6524 struct ppc_link_hash_table *htab;
6527 /* We aren't supposed to use alloca in BFD because on
6528 systems which do not have alloca the version in libiberty
6529 calls xmalloc, which might cause the program to crash
6530 when it runs out of memory. This function doesn't have a
6531 return status, so there's no way to gracefully return an
6532 error. So cheat. We know that string[-1] can be safely
6533 accessed; It's either a string in an ELF string table,
6534 or allocated in an objalloc structure. */
6536 p = eh->elf.root.root.string - 1;
6539 htab = ppc_hash_table (info);
6543 fh = (struct ppc_link_hash_entry *)
6544 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6547 /* Unfortunately, if it so happens that the string we were
6548 looking for was allocated immediately before this string,
6549 then we overwrote the string terminator. That's the only
6550 reason the lookup should fail. */
6553 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6554 while (q >= eh->elf.root.root.string && *q == *p)
6556 if (q < eh->elf.root.root.string && *p == '.')
6557 fh = (struct ppc_link_hash_entry *)
6558 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6567 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6572 get_sym_h (struct elf_link_hash_entry **hp,
6573 Elf_Internal_Sym **symp,
6575 unsigned char **tls_maskp,
6576 Elf_Internal_Sym **locsymsp,
6577 unsigned long r_symndx,
6580 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6582 if (r_symndx >= symtab_hdr->sh_info)
6584 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6585 struct elf_link_hash_entry *h;
6587 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6588 h = elf_follow_link (h);
6596 if (symsecp != NULL)
6598 asection *symsec = NULL;
6599 if (h->root.type == bfd_link_hash_defined
6600 || h->root.type == bfd_link_hash_defweak)
6601 symsec = h->root.u.def.section;
6605 if (tls_maskp != NULL)
6607 struct ppc_link_hash_entry *eh;
6609 eh = (struct ppc_link_hash_entry *) h;
6610 *tls_maskp = &eh->tls_mask;
6615 Elf_Internal_Sym *sym;
6616 Elf_Internal_Sym *locsyms = *locsymsp;
6618 if (locsyms == NULL)
6620 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6621 if (locsyms == NULL)
6622 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6623 symtab_hdr->sh_info,
6624 0, NULL, NULL, NULL);
6625 if (locsyms == NULL)
6627 *locsymsp = locsyms;
6629 sym = locsyms + r_symndx;
6637 if (symsecp != NULL)
6638 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6640 if (tls_maskp != NULL)
6642 struct got_entry **lgot_ents;
6643 unsigned char *tls_mask;
6646 lgot_ents = elf_local_got_ents (ibfd);
6647 if (lgot_ents != NULL)
6649 struct plt_entry **local_plt = (struct plt_entry **)
6650 (lgot_ents + symtab_hdr->sh_info);
6651 unsigned char *lgot_masks = (unsigned char *)
6652 (local_plt + symtab_hdr->sh_info);
6653 tls_mask = &lgot_masks[r_symndx];
6655 *tls_maskp = tls_mask;
6661 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6662 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6663 type suitable for optimization, and 1 otherwise. */
6666 get_tls_mask (unsigned char **tls_maskp,
6667 unsigned long *toc_symndx,
6668 bfd_vma *toc_addend,
6669 Elf_Internal_Sym **locsymsp,
6670 const Elf_Internal_Rela *rel,
6673 unsigned long r_symndx;
6675 struct elf_link_hash_entry *h;
6676 Elf_Internal_Sym *sym;
6680 r_symndx = ELF64_R_SYM (rel->r_info);
6681 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6684 if ((*tls_maskp != NULL && **tls_maskp != 0)
6686 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6689 /* Look inside a TOC section too. */
6692 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6693 off = h->root.u.def.value;
6696 off = sym->st_value;
6697 off += rel->r_addend;
6698 BFD_ASSERT (off % 8 == 0);
6699 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6700 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6701 if (toc_symndx != NULL)
6702 *toc_symndx = r_symndx;
6703 if (toc_addend != NULL)
6704 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6705 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6708 || ((h->root.type == bfd_link_hash_defined
6709 || h->root.type == bfd_link_hash_defweak)
6710 && !h->def_dynamic))
6711 && (next_r == -1 || next_r == -2))
6716 /* Adjust all global syms defined in opd sections. In gcc generated
6717 code for the old ABI, these will already have been done. */
6720 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6722 struct ppc_link_hash_entry *eh;
6724 struct _opd_sec_data *opd;
6726 if (h->root.type == bfd_link_hash_indirect)
6729 if (h->root.type == bfd_link_hash_warning)
6730 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6732 if (h->root.type != bfd_link_hash_defined
6733 && h->root.type != bfd_link_hash_defweak)
6736 eh = (struct ppc_link_hash_entry *) h;
6737 if (eh->adjust_done)
6740 sym_sec = eh->elf.root.u.def.section;
6741 opd = get_opd_info (sym_sec);
6742 if (opd != NULL && opd->adjust != NULL)
6744 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6747 /* This entry has been deleted. */
6748 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6751 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6752 if (elf_discarded_section (dsec))
6754 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6758 eh->elf.root.u.def.value = 0;
6759 eh->elf.root.u.def.section = dsec;
6762 eh->elf.root.u.def.value += adjust;
6763 eh->adjust_done = 1;
6768 /* Handles decrementing dynamic reloc counts for the reloc specified by
6769 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6770 have already been determined. */
6773 dec_dynrel_count (bfd_vma r_info,
6775 struct bfd_link_info *info,
6776 Elf_Internal_Sym **local_syms,
6777 struct elf_link_hash_entry *h,
6780 enum elf_ppc64_reloc_type r_type;
6781 struct ppc_dyn_relocs *p;
6782 struct ppc_dyn_relocs **pp;
6784 /* Can this reloc be dynamic? This switch, and later tests here
6785 should be kept in sync with the code in check_relocs. */
6786 r_type = ELF64_R_TYPE (r_info);
6792 case R_PPC64_TPREL16:
6793 case R_PPC64_TPREL16_LO:
6794 case R_PPC64_TPREL16_HI:
6795 case R_PPC64_TPREL16_HA:
6796 case R_PPC64_TPREL16_DS:
6797 case R_PPC64_TPREL16_LO_DS:
6798 case R_PPC64_TPREL16_HIGHER:
6799 case R_PPC64_TPREL16_HIGHERA:
6800 case R_PPC64_TPREL16_HIGHEST:
6801 case R_PPC64_TPREL16_HIGHESTA:
6805 case R_PPC64_TPREL64:
6806 case R_PPC64_DTPMOD64:
6807 case R_PPC64_DTPREL64:
6808 case R_PPC64_ADDR64:
6812 case R_PPC64_ADDR14:
6813 case R_PPC64_ADDR14_BRNTAKEN:
6814 case R_PPC64_ADDR14_BRTAKEN:
6815 case R_PPC64_ADDR16:
6816 case R_PPC64_ADDR16_DS:
6817 case R_PPC64_ADDR16_HA:
6818 case R_PPC64_ADDR16_HI:
6819 case R_PPC64_ADDR16_HIGHER:
6820 case R_PPC64_ADDR16_HIGHERA:
6821 case R_PPC64_ADDR16_HIGHEST:
6822 case R_PPC64_ADDR16_HIGHESTA:
6823 case R_PPC64_ADDR16_LO:
6824 case R_PPC64_ADDR16_LO_DS:
6825 case R_PPC64_ADDR24:
6826 case R_PPC64_ADDR32:
6827 case R_PPC64_UADDR16:
6828 case R_PPC64_UADDR32:
6829 case R_PPC64_UADDR64:
6834 if (local_syms != NULL)
6836 unsigned long r_symndx;
6837 Elf_Internal_Sym *sym;
6838 bfd *ibfd = sec->owner;
6840 r_symndx = ELF64_R_SYM (r_info);
6841 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6846 && (must_be_dyn_reloc (info, r_type)
6849 || h->root.type == bfd_link_hash_defweak
6850 || !h->def_regular))))
6851 || (ELIMINATE_COPY_RELOCS
6854 && (h->root.type == bfd_link_hash_defweak
6855 || !h->def_regular)))
6861 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6864 if (sym_sec != NULL)
6866 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6867 pp = (struct ppc_dyn_relocs **) vpp;
6871 void *vpp = &elf_section_data (sec)->local_dynrel;
6872 pp = (struct ppc_dyn_relocs **) vpp;
6875 /* elf_gc_sweep may have already removed all dyn relocs associated
6876 with local syms for a given section. Don't report a dynreloc
6882 while ((p = *pp) != NULL)
6886 if (!must_be_dyn_reloc (info, r_type))
6896 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6898 bfd_set_error (bfd_error_bad_value);
6902 /* Remove unused Official Procedure Descriptor entries. Currently we
6903 only remove those associated with functions in discarded link-once
6904 sections, or weakly defined functions that have been overridden. It
6905 would be possible to remove many more entries for statically linked
6909 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
6912 bfd_boolean some_edited = FALSE;
6913 asection *need_pad = NULL;
6915 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6918 Elf_Internal_Rela *relstart, *rel, *relend;
6919 Elf_Internal_Shdr *symtab_hdr;
6920 Elf_Internal_Sym *local_syms;
6921 struct elf_link_hash_entry **sym_hashes;
6923 struct _opd_sec_data *opd;
6924 bfd_boolean need_edit, add_aux_fields;
6925 bfd_size_type cnt_16b = 0;
6927 sec = bfd_get_section_by_name (ibfd, ".opd");
6928 if (sec == NULL || sec->size == 0)
6931 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6934 if (sec->output_section == bfd_abs_section_ptr)
6937 /* Look through the section relocs. */
6938 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6942 symtab_hdr = &elf_symtab_hdr (ibfd);
6943 sym_hashes = elf_sym_hashes (ibfd);
6945 /* Read the relocations. */
6946 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6948 if (relstart == NULL)
6951 /* First run through the relocs to check they are sane, and to
6952 determine whether we need to edit this opd section. */
6956 relend = relstart + sec->reloc_count;
6957 for (rel = relstart; rel < relend; )
6959 enum elf_ppc64_reloc_type r_type;
6960 unsigned long r_symndx;
6962 struct elf_link_hash_entry *h;
6963 Elf_Internal_Sym *sym;
6965 /* .opd contains a regular array of 16 or 24 byte entries. We're
6966 only interested in the reloc pointing to a function entry
6968 if (rel->r_offset != offset
6969 || rel + 1 >= relend
6970 || (rel + 1)->r_offset != offset + 8)
6972 /* If someone messes with .opd alignment then after a
6973 "ld -r" we might have padding in the middle of .opd.
6974 Also, there's nothing to prevent someone putting
6975 something silly in .opd with the assembler. No .opd
6976 optimization for them! */
6978 (*_bfd_error_handler)
6979 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6984 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6985 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6987 (*_bfd_error_handler)
6988 (_("%B: unexpected reloc type %u in .opd section"),
6994 r_symndx = ELF64_R_SYM (rel->r_info);
6995 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6999 if (sym_sec == NULL || sym_sec->owner == NULL)
7001 const char *sym_name;
7003 sym_name = h->root.root.string;
7005 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7008 (*_bfd_error_handler)
7009 (_("%B: undefined sym `%s' in .opd section"),
7015 /* opd entries are always for functions defined in the
7016 current input bfd. If the symbol isn't defined in the
7017 input bfd, then we won't be using the function in this
7018 bfd; It must be defined in a linkonce section in another
7019 bfd, or is weak. It's also possible that we are
7020 discarding the function due to a linker script /DISCARD/,
7021 which we test for via the output_section. */
7022 if (sym_sec->owner != ibfd
7023 || sym_sec->output_section == bfd_abs_section_ptr)
7028 || (rel + 1 == relend && rel->r_offset == offset + 16))
7030 if (sec->size == offset + 24)
7035 if (rel == relend && sec->size == offset + 16)
7043 if (rel->r_offset == offset + 24)
7045 else if (rel->r_offset != offset + 16)
7047 else if (rel + 1 < relend
7048 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7049 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7054 else if (rel + 2 < relend
7055 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7056 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7065 add_aux_fields = non_overlapping && cnt_16b > 0;
7067 if (need_edit || add_aux_fields)
7069 Elf_Internal_Rela *write_rel;
7070 bfd_byte *rptr, *wptr;
7071 bfd_byte *new_contents;
7076 new_contents = NULL;
7077 amt = sec->size * sizeof (long) / 8;
7078 opd = &ppc64_elf_section_data (sec)->u.opd;
7079 opd->adjust = bfd_zalloc (sec->owner, amt);
7080 if (opd->adjust == NULL)
7082 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7084 /* This seems a waste of time as input .opd sections are all
7085 zeros as generated by gcc, but I suppose there's no reason
7086 this will always be so. We might start putting something in
7087 the third word of .opd entries. */
7088 if ((sec->flags & SEC_IN_MEMORY) == 0)
7091 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7096 if (local_syms != NULL
7097 && symtab_hdr->contents != (unsigned char *) local_syms)
7099 if (elf_section_data (sec)->relocs != relstart)
7103 sec->contents = loc;
7104 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7107 elf_section_data (sec)->relocs = relstart;
7109 new_contents = sec->contents;
7112 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7113 if (new_contents == NULL)
7117 wptr = new_contents;
7118 rptr = sec->contents;
7120 write_rel = relstart;
7124 for (rel = relstart; rel < relend; rel++)
7126 unsigned long r_symndx;
7128 struct elf_link_hash_entry *h;
7129 Elf_Internal_Sym *sym;
7131 r_symndx = ELF64_R_SYM (rel->r_info);
7132 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7136 if (rel->r_offset == offset)
7138 struct ppc_link_hash_entry *fdh = NULL;
7140 /* See if the .opd entry is full 24 byte or
7141 16 byte (with fd_aux entry overlapped with next
7144 if ((rel + 2 == relend && sec->size == offset + 16)
7145 || (rel + 3 < relend
7146 && rel[2].r_offset == offset + 16
7147 && rel[3].r_offset == offset + 24
7148 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7149 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7153 && h->root.root.string[0] == '.')
7155 struct ppc_link_hash_table *htab;
7157 htab = ppc_hash_table (info);
7159 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7162 && fdh->elf.root.type != bfd_link_hash_defined
7163 && fdh->elf.root.type != bfd_link_hash_defweak)
7167 skip = (sym_sec->owner != ibfd
7168 || sym_sec->output_section == bfd_abs_section_ptr);
7171 if (fdh != NULL && sym_sec->owner == ibfd)
7173 /* Arrange for the function descriptor sym
7175 fdh->elf.root.u.def.value = 0;
7176 fdh->elf.root.u.def.section = sym_sec;
7178 opd->adjust[rel->r_offset / 8] = -1;
7182 /* We'll be keeping this opd entry. */
7186 /* Redefine the function descriptor symbol to
7187 this location in the opd section. It is
7188 necessary to update the value here rather
7189 than using an array of adjustments as we do
7190 for local symbols, because various places
7191 in the generic ELF code use the value
7192 stored in u.def.value. */
7193 fdh->elf.root.u.def.value = wptr - new_contents;
7194 fdh->adjust_done = 1;
7197 /* Local syms are a bit tricky. We could
7198 tweak them as they can be cached, but
7199 we'd need to look through the local syms
7200 for the function descriptor sym which we
7201 don't have at the moment. So keep an
7202 array of adjustments. */
7203 opd->adjust[rel->r_offset / 8]
7204 = (wptr - new_contents) - (rptr - sec->contents);
7207 memcpy (wptr, rptr, opd_ent_size);
7208 wptr += opd_ent_size;
7209 if (add_aux_fields && opd_ent_size == 16)
7211 memset (wptr, '\0', 8);
7215 rptr += opd_ent_size;
7216 offset += opd_ent_size;
7222 && !info->relocatable
7223 && !dec_dynrel_count (rel->r_info, sec, info,
7229 /* We need to adjust any reloc offsets to point to the
7230 new opd entries. While we're at it, we may as well
7231 remove redundant relocs. */
7232 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7233 if (write_rel != rel)
7234 memcpy (write_rel, rel, sizeof (*rel));
7239 sec->size = wptr - new_contents;
7240 sec->reloc_count = write_rel - relstart;
7243 free (sec->contents);
7244 sec->contents = new_contents;
7247 /* Fudge the header size too, as this is used later in
7248 elf_bfd_final_link if we are emitting relocs. */
7249 elf_section_data (sec)->rel_hdr.sh_size
7250 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
7251 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
7254 else if (elf_section_data (sec)->relocs != relstart)
7257 if (local_syms != NULL
7258 && symtab_hdr->contents != (unsigned char *) local_syms)
7260 if (!info->keep_memory)
7263 symtab_hdr->contents = (unsigned char *) local_syms;
7268 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7270 /* If we are doing a final link and the last .opd entry is just 16 byte
7271 long, add a 8 byte padding after it. */
7272 if (need_pad != NULL && !info->relocatable)
7276 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7278 BFD_ASSERT (need_pad->size > 0);
7280 p = bfd_malloc (need_pad->size + 8);
7284 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7285 p, 0, need_pad->size))
7288 need_pad->contents = p;
7289 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7293 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7297 need_pad->contents = p;
7300 memset (need_pad->contents + need_pad->size, 0, 8);
7301 need_pad->size += 8;
7307 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7310 ppc64_elf_tls_setup (struct bfd_link_info *info,
7311 int no_tls_get_addr_opt,
7314 struct ppc_link_hash_table *htab;
7316 htab = ppc_hash_table (info);
7321 htab->do_multi_toc = 0;
7322 else if (!htab->do_multi_toc)
7325 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7326 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7327 FALSE, FALSE, TRUE));
7328 /* Move dynamic linking info to the function descriptor sym. */
7329 if (htab->tls_get_addr != NULL)
7330 func_desc_adjust (&htab->tls_get_addr->elf, info);
7331 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7332 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7333 FALSE, FALSE, TRUE));
7334 if (!no_tls_get_addr_opt)
7336 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7338 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7339 FALSE, FALSE, TRUE);
7341 func_desc_adjust (opt, info);
7342 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7343 FALSE, FALSE, TRUE);
7345 && (opt_fd->root.type == bfd_link_hash_defined
7346 || opt_fd->root.type == bfd_link_hash_defweak))
7348 /* If glibc supports an optimized __tls_get_addr call stub,
7349 signalled by the presence of __tls_get_addr_opt, and we'll
7350 be calling __tls_get_addr via a plt call stub, then
7351 make __tls_get_addr point to __tls_get_addr_opt. */
7352 tga_fd = &htab->tls_get_addr_fd->elf;
7353 if (htab->elf.dynamic_sections_created
7355 && (tga_fd->type == STT_FUNC
7356 || tga_fd->needs_plt)
7357 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7358 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7359 && tga_fd->root.type == bfd_link_hash_undefweak)))
7361 struct plt_entry *ent;
7363 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7364 if (ent->plt.refcount > 0)
7368 tga_fd->root.type = bfd_link_hash_indirect;
7369 tga_fd->root.u.i.link = &opt_fd->root;
7370 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7371 if (opt_fd->dynindx != -1)
7373 /* Use __tls_get_addr_opt in dynamic relocations. */
7374 opt_fd->dynindx = -1;
7375 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7376 opt_fd->dynstr_index);
7377 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7380 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7381 tga = &htab->tls_get_addr->elf;
7382 if (opt != NULL && tga != NULL)
7384 tga->root.type = bfd_link_hash_indirect;
7385 tga->root.u.i.link = &opt->root;
7386 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7387 _bfd_elf_link_hash_hide_symbol (info, opt,
7389 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7391 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7392 htab->tls_get_addr_fd->is_func_descriptor = 1;
7393 if (htab->tls_get_addr != NULL)
7395 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7396 htab->tls_get_addr->is_func = 1;
7402 no_tls_get_addr_opt = TRUE;
7404 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7405 return _bfd_elf_tls_setup (info->output_bfd, info);
7408 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7412 branch_reloc_hash_match (const bfd *ibfd,
7413 const Elf_Internal_Rela *rel,
7414 const struct ppc_link_hash_entry *hash1,
7415 const struct ppc_link_hash_entry *hash2)
7417 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7418 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7419 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7421 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7423 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7424 struct elf_link_hash_entry *h;
7426 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7427 h = elf_follow_link (h);
7428 if (h == &hash1->elf || h == &hash2->elf)
7434 /* Run through all the TLS relocs looking for optimization
7435 opportunities. The linker has been hacked (see ppc64elf.em) to do
7436 a preliminary section layout so that we know the TLS segment
7437 offsets. We can't optimize earlier because some optimizations need
7438 to know the tp offset, and we need to optimize before allocating
7439 dynamic relocations. */
7442 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7446 struct ppc_link_hash_table *htab;
7449 if (info->relocatable || !info->executable)
7452 htab = ppc_hash_table (info);
7456 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7458 Elf_Internal_Sym *locsyms = NULL;
7459 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7460 unsigned char *toc_ref = NULL;
7462 /* Look at all the sections for this file. Make two passes over
7463 the relocs. On the first pass, mark toc entries involved
7464 with tls relocs, and check that tls relocs involved in
7465 setting up a tls_get_addr call are indeed followed by such a
7466 call. If they are not, exclude them from the optimizations
7467 done on the second pass. */
7468 for (pass = 0; pass < 2; ++pass)
7469 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7470 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7472 Elf_Internal_Rela *relstart, *rel, *relend;
7474 /* Read the relocations. */
7475 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7477 if (relstart == NULL)
7480 relend = relstart + sec->reloc_count;
7481 for (rel = relstart; rel < relend; rel++)
7483 enum elf_ppc64_reloc_type r_type;
7484 unsigned long r_symndx;
7485 struct elf_link_hash_entry *h;
7486 Elf_Internal_Sym *sym;
7488 unsigned char *tls_mask;
7489 unsigned char tls_set, tls_clear, tls_type = 0;
7491 bfd_boolean ok_tprel, is_local;
7492 long toc_ref_index = 0;
7493 int expecting_tls_get_addr = 0;
7495 r_symndx = ELF64_R_SYM (rel->r_info);
7496 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7500 if (elf_section_data (sec)->relocs != relstart)
7502 if (toc_ref != NULL)
7505 && (elf_symtab_hdr (ibfd).contents
7506 != (unsigned char *) locsyms))
7513 if (h->root.type == bfd_link_hash_defined
7514 || h->root.type == bfd_link_hash_defweak)
7515 value = h->root.u.def.value;
7516 else if (h->root.type == bfd_link_hash_undefweak)
7522 /* Symbols referenced by TLS relocs must be of type
7523 STT_TLS. So no need for .opd local sym adjust. */
7524 value = sym->st_value;
7533 && h->root.type == bfd_link_hash_undefweak)
7537 value += sym_sec->output_offset;
7538 value += sym_sec->output_section->vma;
7539 value -= htab->elf.tls_sec->vma;
7540 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7541 < (bfd_vma) 1 << 32);
7545 r_type = ELF64_R_TYPE (rel->r_info);
7548 case R_PPC64_GOT_TLSLD16:
7549 case R_PPC64_GOT_TLSLD16_LO:
7550 expecting_tls_get_addr = 1;
7553 case R_PPC64_GOT_TLSLD16_HI:
7554 case R_PPC64_GOT_TLSLD16_HA:
7555 /* These relocs should never be against a symbol
7556 defined in a shared lib. Leave them alone if
7557 that turns out to be the case. */
7564 tls_type = TLS_TLS | TLS_LD;
7567 case R_PPC64_GOT_TLSGD16:
7568 case R_PPC64_GOT_TLSGD16_LO:
7569 expecting_tls_get_addr = 1;
7572 case R_PPC64_GOT_TLSGD16_HI:
7573 case R_PPC64_GOT_TLSGD16_HA:
7579 tls_set = TLS_TLS | TLS_TPRELGD;
7581 tls_type = TLS_TLS | TLS_GD;
7584 case R_PPC64_GOT_TPREL16_DS:
7585 case R_PPC64_GOT_TPREL16_LO_DS:
7586 case R_PPC64_GOT_TPREL16_HI:
7587 case R_PPC64_GOT_TPREL16_HA:
7592 tls_clear = TLS_TPREL;
7593 tls_type = TLS_TLS | TLS_TPREL;
7599 case R_PPC64_TOC16_LO:
7603 if (sym_sec == NULL || sym_sec != toc)
7606 /* Mark this toc entry as referenced by a TLS
7607 code sequence. We can do that now in the
7608 case of R_PPC64_TLS, and after checking for
7609 tls_get_addr for the TOC16 relocs. */
7610 if (toc_ref == NULL)
7612 toc_ref = bfd_zmalloc (toc->size / 8);
7613 if (toc_ref == NULL)
7617 value = h->root.u.def.value;
7619 value = sym->st_value;
7620 value += rel->r_addend;
7621 BFD_ASSERT (value < toc->size && value % 8 == 0);
7622 toc_ref_index = value / 8;
7623 if (r_type == R_PPC64_TLS
7624 || r_type == R_PPC64_TLSGD
7625 || r_type == R_PPC64_TLSLD)
7627 toc_ref[toc_ref_index] = 1;
7631 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7636 expecting_tls_get_addr = 2;
7639 case R_PPC64_TPREL64:
7643 || !toc_ref[rel->r_offset / 8])
7648 tls_set = TLS_EXPLICIT;
7649 tls_clear = TLS_TPREL;
7654 case R_PPC64_DTPMOD64:
7658 || !toc_ref[rel->r_offset / 8])
7660 if (rel + 1 < relend
7662 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7663 && rel[1].r_offset == rel->r_offset + 8)
7667 tls_set = TLS_EXPLICIT | TLS_GD;
7670 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7679 tls_set = TLS_EXPLICIT;
7690 if (!expecting_tls_get_addr
7691 || !sec->has_tls_get_addr_call)
7694 if (rel + 1 < relend
7695 && branch_reloc_hash_match (ibfd, rel + 1,
7697 htab->tls_get_addr_fd))
7699 if (expecting_tls_get_addr == 2)
7701 /* Check for toc tls entries. */
7702 unsigned char *toc_tls;
7705 retval = get_tls_mask (&toc_tls, NULL, NULL,
7710 if (retval > 1 && toc_tls != NULL)
7711 toc_ref[toc_ref_index] = 1;
7716 if (expecting_tls_get_addr != 1)
7719 /* Uh oh, we didn't find the expected call. We
7720 could just mark this symbol to exclude it
7721 from tls optimization but it's safer to skip
7722 the entire section. */
7723 sec->has_tls_reloc = 0;
7727 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7729 struct plt_entry *ent;
7730 for (ent = htab->tls_get_addr->elf.plt.plist;
7733 if (ent->addend == 0)
7735 if (ent->plt.refcount > 0)
7737 ent->plt.refcount -= 1;
7738 expecting_tls_get_addr = 0;
7744 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7746 struct plt_entry *ent;
7747 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7750 if (ent->addend == 0)
7752 if (ent->plt.refcount > 0)
7753 ent->plt.refcount -= 1;
7761 if ((tls_set & TLS_EXPLICIT) == 0)
7763 struct got_entry *ent;
7765 /* Adjust got entry for this reloc. */
7769 ent = elf_local_got_ents (ibfd)[r_symndx];
7771 for (; ent != NULL; ent = ent->next)
7772 if (ent->addend == rel->r_addend
7773 && ent->owner == ibfd
7774 && ent->tls_type == tls_type)
7781 /* We managed to get rid of a got entry. */
7782 if (ent->got.refcount > 0)
7783 ent->got.refcount -= 1;
7788 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7789 we'll lose one or two dyn relocs. */
7790 if (!dec_dynrel_count (rel->r_info, sec, info,
7794 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7796 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7802 *tls_mask |= tls_set;
7803 *tls_mask &= ~tls_clear;
7806 if (elf_section_data (sec)->relocs != relstart)
7810 if (toc_ref != NULL)
7814 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7816 if (!info->keep_memory)
7819 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7825 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7826 the values of any global symbols in a toc section that has been
7827 edited. Globals in toc sections should be a rarity, so this function
7828 sets a flag if any are found in toc sections other than the one just
7829 edited, so that futher hash table traversals can be avoided. */
7831 struct adjust_toc_info
7834 unsigned long *skip;
7835 bfd_boolean global_toc_syms;
7839 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7841 struct ppc_link_hash_entry *eh;
7842 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7844 if (h->root.type == bfd_link_hash_indirect)
7847 if (h->root.type == bfd_link_hash_warning)
7848 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7850 if (h->root.type != bfd_link_hash_defined
7851 && h->root.type != bfd_link_hash_defweak)
7854 eh = (struct ppc_link_hash_entry *) h;
7855 if (eh->adjust_done)
7858 if (eh->elf.root.u.def.section == toc_inf->toc)
7860 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7861 if (skip != (unsigned long) -1)
7862 eh->elf.root.u.def.value -= skip;
7865 (*_bfd_error_handler)
7866 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7867 eh->elf.root.u.def.section = &bfd_abs_section;
7868 eh->elf.root.u.def.value = 0;
7870 eh->adjust_done = 1;
7872 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7873 toc_inf->global_toc_syms = TRUE;
7878 /* Examine all relocs referencing .toc sections in order to remove
7879 unused .toc entries. */
7882 ppc64_elf_edit_toc (struct bfd_link_info *info)
7885 struct adjust_toc_info toc_inf;
7886 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7888 htab->do_toc_opt = 1;
7889 toc_inf.global_toc_syms = TRUE;
7890 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7892 asection *toc, *sec;
7893 Elf_Internal_Shdr *symtab_hdr;
7894 Elf_Internal_Sym *local_syms;
7895 struct elf_link_hash_entry **sym_hashes;
7896 Elf_Internal_Rela *relstart, *rel;
7897 unsigned long *skip, *drop;
7898 unsigned char *used;
7899 unsigned char *keep, last, some_unused;
7901 toc = bfd_get_section_by_name (ibfd, ".toc");
7904 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7905 || elf_discarded_section (toc))
7909 symtab_hdr = &elf_symtab_hdr (ibfd);
7910 sym_hashes = elf_sym_hashes (ibfd);
7912 /* Look at sections dropped from the final link. */
7915 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7917 if (sec->reloc_count == 0
7918 || !elf_discarded_section (sec)
7919 || get_opd_info (sec)
7920 || (sec->flags & SEC_ALLOC) == 0
7921 || (sec->flags & SEC_DEBUGGING) != 0)
7924 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7925 if (relstart == NULL)
7928 /* Run through the relocs to see which toc entries might be
7930 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7932 enum elf_ppc64_reloc_type r_type;
7933 unsigned long r_symndx;
7935 struct elf_link_hash_entry *h;
7936 Elf_Internal_Sym *sym;
7939 r_type = ELF64_R_TYPE (rel->r_info);
7946 case R_PPC64_TOC16_LO:
7947 case R_PPC64_TOC16_HI:
7948 case R_PPC64_TOC16_HA:
7949 case R_PPC64_TOC16_DS:
7950 case R_PPC64_TOC16_LO_DS:
7954 r_symndx = ELF64_R_SYM (rel->r_info);
7955 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7963 val = h->root.u.def.value;
7965 val = sym->st_value;
7966 val += rel->r_addend;
7968 if (val >= toc->size)
7971 /* Anything in the toc ought to be aligned to 8 bytes.
7972 If not, don't mark as unused. */
7978 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7986 if (elf_section_data (sec)->relocs != relstart)
7993 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7997 if (local_syms != NULL
7998 && symtab_hdr->contents != (unsigned char *) local_syms)
8002 && elf_section_data (sec)->relocs != relstart)
8009 /* Now check all kept sections that might reference the toc.
8010 Check the toc itself last. */
8011 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8014 sec = (sec == toc ? NULL
8015 : sec->next == NULL ? toc
8016 : sec->next == toc && toc->next ? toc->next
8021 if (sec->reloc_count == 0
8022 || elf_discarded_section (sec)
8023 || get_opd_info (sec)
8024 || (sec->flags & SEC_ALLOC) == 0
8025 || (sec->flags & SEC_DEBUGGING) != 0)
8028 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
8029 if (relstart == NULL)
8032 /* Mark toc entries referenced as used. */
8035 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8037 enum elf_ppc64_reloc_type r_type;
8038 unsigned long r_symndx;
8040 struct elf_link_hash_entry *h;
8041 Elf_Internal_Sym *sym;
8044 r_type = ELF64_R_TYPE (rel->r_info);
8048 case R_PPC64_TOC16_LO:
8049 case R_PPC64_TOC16_HI:
8050 case R_PPC64_TOC16_HA:
8051 case R_PPC64_TOC16_DS:
8052 case R_PPC64_TOC16_LO_DS:
8053 /* In case we're taking addresses of toc entries. */
8054 case R_PPC64_ADDR64:
8061 r_symndx = ELF64_R_SYM (rel->r_info);
8062 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8073 val = h->root.u.def.value;
8075 val = sym->st_value;
8076 val += rel->r_addend;
8078 if (val >= toc->size)
8081 /* For the toc section, we only mark as used if
8082 this entry itself isn't unused. */
8085 && (used[rel->r_offset >> 3]
8086 || !skip[rel->r_offset >> 3]))
8087 /* Do all the relocs again, to catch reference
8096 /* Merge the used and skip arrays. Assume that TOC
8097 doublewords not appearing as either used or unused belong
8098 to to an entry more than one doubleword in size. */
8099 for (drop = skip, keep = used, last = 0, some_unused = 0;
8100 drop < skip + (toc->size + 7) / 8;
8121 bfd_byte *contents, *src;
8124 /* Shuffle the toc contents, and at the same time convert the
8125 skip array from booleans into offsets. */
8126 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8129 elf_section_data (toc)->this_hdr.contents = contents;
8131 for (src = contents, off = 0, drop = skip;
8132 src < contents + toc->size;
8137 *drop = (unsigned long) -1;
8143 memcpy (src - off, src, 8);
8146 toc->rawsize = toc->size;
8147 toc->size = src - contents - off;
8149 if (toc->reloc_count != 0)
8151 Elf_Internal_Rela *wrel;
8154 /* Read toc relocs. */
8155 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8157 if (relstart == NULL)
8160 /* Remove unused toc relocs, and adjust those we keep. */
8162 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
8163 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
8165 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8166 wrel->r_info = rel->r_info;
8167 wrel->r_addend = rel->r_addend;
8170 else if (!dec_dynrel_count (rel->r_info, toc, info,
8171 &local_syms, NULL, NULL))
8174 toc->reloc_count = wrel - relstart;
8175 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
8176 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
8177 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
8180 /* Adjust addends for relocs against the toc section sym. */
8181 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8183 if (sec->reloc_count == 0
8184 || elf_discarded_section (sec))
8187 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8189 if (relstart == NULL)
8192 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8194 enum elf_ppc64_reloc_type r_type;
8195 unsigned long r_symndx;
8197 struct elf_link_hash_entry *h;
8198 Elf_Internal_Sym *sym;
8200 r_type = ELF64_R_TYPE (rel->r_info);
8207 case R_PPC64_TOC16_LO:
8208 case R_PPC64_TOC16_HI:
8209 case R_PPC64_TOC16_HA:
8210 case R_PPC64_TOC16_DS:
8211 case R_PPC64_TOC16_LO_DS:
8212 case R_PPC64_ADDR64:
8216 r_symndx = ELF64_R_SYM (rel->r_info);
8217 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8221 if (sym_sec != toc || h != NULL || sym->st_value != 0)
8224 rel->r_addend -= skip[rel->r_addend >> 3];
8228 /* We shouldn't have local or global symbols defined in the TOC,
8229 but handle them anyway. */
8230 if (local_syms != NULL)
8232 Elf_Internal_Sym *sym;
8234 for (sym = local_syms;
8235 sym < local_syms + symtab_hdr->sh_info;
8237 if (sym->st_value != 0
8238 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8240 if (skip[sym->st_value >> 3] != (unsigned long) -1)
8241 sym->st_value -= skip[sym->st_value >> 3];
8244 (*_bfd_error_handler)
8245 (_("%s defined in removed toc entry"),
8246 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
8249 sym->st_shndx = SHN_ABS;
8251 symtab_hdr->contents = (unsigned char *) local_syms;
8255 /* Finally, adjust any global syms defined in the toc. */
8256 if (toc_inf.global_toc_syms)
8259 toc_inf.skip = skip;
8260 toc_inf.global_toc_syms = FALSE;
8261 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8266 if (local_syms != NULL
8267 && symtab_hdr->contents != (unsigned char *) local_syms)
8269 if (!info->keep_memory)
8272 symtab_hdr->contents = (unsigned char *) local_syms;
8280 /* Return true iff input section I references the TOC using
8281 instructions limited to +/-32k offsets. */
8284 ppc64_elf_has_small_toc_reloc (asection *i)
8286 return (is_ppc64_elf (i->owner)
8287 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8290 /* Allocate space for one GOT entry. */
8293 allocate_got (struct elf_link_hash_entry *h,
8294 struct bfd_link_info *info,
8295 struct got_entry *gent)
8297 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8299 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8300 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8302 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8303 ? 2 : 1) * sizeof (Elf64_External_Rela);
8304 asection *got = ppc64_elf_tdata (gent->owner)->got;
8306 gent->got.offset = got->size;
8307 got->size += entsize;
8309 dyn = htab->elf.dynamic_sections_created;
8311 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8312 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8313 || h->root.type != bfd_link_hash_undefweak))
8315 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8316 relgot->size += rentsize;
8318 else if (h->type == STT_GNU_IFUNC)
8320 asection *relgot = htab->reliplt;
8321 relgot->size += rentsize;
8322 htab->got_reli_size += rentsize;
8326 /* This function merges got entries in the same toc group. */
8329 merge_got_entries (struct got_entry **pent)
8331 struct got_entry *ent, *ent2;
8333 for (ent = *pent; ent != NULL; ent = ent->next)
8334 if (!ent->is_indirect)
8335 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8336 if (!ent2->is_indirect
8337 && ent2->addend == ent->addend
8338 && ent2->tls_type == ent->tls_type
8339 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8341 ent2->is_indirect = TRUE;
8342 ent2->got.ent = ent;
8346 /* Allocate space in .plt, .got and associated reloc sections for
8350 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8352 struct bfd_link_info *info;
8353 struct ppc_link_hash_table *htab;
8355 struct ppc_link_hash_entry *eh;
8356 struct ppc_dyn_relocs *p;
8357 struct got_entry **pgent, *gent;
8359 if (h->root.type == bfd_link_hash_indirect)
8362 if (h->root.type == bfd_link_hash_warning)
8363 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8365 info = (struct bfd_link_info *) inf;
8366 htab = ppc_hash_table (info);
8370 if ((htab->elf.dynamic_sections_created
8372 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8373 || h->type == STT_GNU_IFUNC)
8375 struct plt_entry *pent;
8376 bfd_boolean doneone = FALSE;
8377 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8378 if (pent->plt.refcount > 0)
8380 if (!htab->elf.dynamic_sections_created
8381 || h->dynindx == -1)
8384 pent->plt.offset = s->size;
8385 s->size += PLT_ENTRY_SIZE;
8390 /* If this is the first .plt entry, make room for the special
8394 s->size += PLT_INITIAL_ENTRY_SIZE;
8396 pent->plt.offset = s->size;
8398 /* Make room for this entry. */
8399 s->size += PLT_ENTRY_SIZE;
8401 /* Make room for the .glink code. */
8404 s->size += GLINK_CALL_STUB_SIZE;
8405 /* We need bigger stubs past index 32767. */
8406 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8410 /* We also need to make an entry in the .rela.plt section. */
8413 s->size += sizeof (Elf64_External_Rela);
8417 pent->plt.offset = (bfd_vma) -1;
8420 h->plt.plist = NULL;
8426 h->plt.plist = NULL;
8430 eh = (struct ppc_link_hash_entry *) h;
8431 /* Run through the TLS GD got entries first if we're changing them
8433 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8434 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8435 if (gent->got.refcount > 0
8436 && (gent->tls_type & TLS_GD) != 0)
8438 /* This was a GD entry that has been converted to TPREL. If
8439 there happens to be a TPREL entry we can use that one. */
8440 struct got_entry *ent;
8441 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8442 if (ent->got.refcount > 0
8443 && (ent->tls_type & TLS_TPREL) != 0
8444 && ent->addend == gent->addend
8445 && ent->owner == gent->owner)
8447 gent->got.refcount = 0;
8451 /* If not, then we'll be using our own TPREL entry. */
8452 if (gent->got.refcount != 0)
8453 gent->tls_type = TLS_TLS | TLS_TPREL;
8456 /* Remove any list entry that won't generate a word in the GOT before
8457 we call merge_got_entries. Otherwise we risk merging to empty
8459 pgent = &h->got.glist;
8460 while ((gent = *pgent) != NULL)
8461 if (gent->got.refcount > 0)
8463 if ((gent->tls_type & TLS_LD) != 0
8466 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8467 *pgent = gent->next;
8470 pgent = &gent->next;
8473 *pgent = gent->next;
8475 if (!htab->do_multi_toc)
8476 merge_got_entries (&h->got.glist);
8478 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8479 if (!gent->is_indirect)
8481 /* Make sure this symbol is output as a dynamic symbol.
8482 Undefined weak syms won't yet be marked as dynamic,
8483 nor will all TLS symbols. */
8484 if (h->dynindx == -1
8486 && h->type != STT_GNU_IFUNC
8487 && htab->elf.dynamic_sections_created)
8489 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8493 if (!is_ppc64_elf (gent->owner))
8496 allocate_got (h, info, gent);
8499 if (eh->dyn_relocs == NULL
8500 || (!htab->elf.dynamic_sections_created
8501 && h->type != STT_GNU_IFUNC))
8504 /* In the shared -Bsymbolic case, discard space allocated for
8505 dynamic pc-relative relocs against symbols which turn out to be
8506 defined in regular objects. For the normal shared case, discard
8507 space for relocs that have become local due to symbol visibility
8512 /* Relocs that use pc_count are those that appear on a call insn,
8513 or certain REL relocs (see must_be_dyn_reloc) that can be
8514 generated via assembly. We want calls to protected symbols to
8515 resolve directly to the function rather than going via the plt.
8516 If people want function pointer comparisons to work as expected
8517 then they should avoid writing weird assembly. */
8518 if (SYMBOL_CALLS_LOCAL (info, h))
8520 struct ppc_dyn_relocs **pp;
8522 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8524 p->count -= p->pc_count;
8533 /* Also discard relocs on undefined weak syms with non-default
8535 if (eh->dyn_relocs != NULL
8536 && h->root.type == bfd_link_hash_undefweak)
8538 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8539 eh->dyn_relocs = NULL;
8541 /* Make sure this symbol is output as a dynamic symbol.
8542 Undefined weak syms won't yet be marked as dynamic. */
8543 else if (h->dynindx == -1
8544 && !h->forced_local)
8546 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8551 else if (h->type == STT_GNU_IFUNC)
8553 if (!h->non_got_ref)
8554 eh->dyn_relocs = NULL;
8556 else if (ELIMINATE_COPY_RELOCS)
8558 /* For the non-shared case, discard space for relocs against
8559 symbols which turn out to need copy relocs or are not
8565 /* Make sure this symbol is output as a dynamic symbol.
8566 Undefined weak syms won't yet be marked as dynamic. */
8567 if (h->dynindx == -1
8568 && !h->forced_local)
8570 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8574 /* If that succeeded, we know we'll be keeping all the
8576 if (h->dynindx != -1)
8580 eh->dyn_relocs = NULL;
8585 /* Finally, allocate space. */
8586 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8588 asection *sreloc = elf_section_data (p->sec)->sreloc;
8589 if (!htab->elf.dynamic_sections_created)
8590 sreloc = htab->reliplt;
8591 sreloc->size += p->count * sizeof (Elf64_External_Rela);
8597 /* Find any dynamic relocs that apply to read-only sections. */
8600 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8602 struct ppc_link_hash_entry *eh;
8603 struct ppc_dyn_relocs *p;
8605 if (h->root.type == bfd_link_hash_warning)
8606 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8608 eh = (struct ppc_link_hash_entry *) h;
8609 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8611 asection *s = p->sec->output_section;
8613 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8615 struct bfd_link_info *info = inf;
8617 info->flags |= DF_TEXTREL;
8619 /* Not an error, just cut short the traversal. */
8626 /* Set the sizes of the dynamic sections. */
8629 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8630 struct bfd_link_info *info)
8632 struct ppc_link_hash_table *htab;
8637 struct got_entry *first_tlsld;
8639 htab = ppc_hash_table (info);
8643 dynobj = htab->elf.dynobj;
8647 if (htab->elf.dynamic_sections_created)
8649 /* Set the contents of the .interp section to the interpreter. */
8650 if (info->executable)
8652 s = bfd_get_section_by_name (dynobj, ".interp");
8655 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8656 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8660 /* Set up .got offsets for local syms, and space for local dynamic
8662 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8664 struct got_entry **lgot_ents;
8665 struct got_entry **end_lgot_ents;
8666 struct plt_entry **local_plt;
8667 struct plt_entry **end_local_plt;
8668 unsigned char *lgot_masks;
8669 bfd_size_type locsymcount;
8670 Elf_Internal_Shdr *symtab_hdr;
8673 if (!is_ppc64_elf (ibfd))
8676 for (s = ibfd->sections; s != NULL; s = s->next)
8678 struct ppc_dyn_relocs *p;
8680 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8682 if (!bfd_is_abs_section (p->sec)
8683 && bfd_is_abs_section (p->sec->output_section))
8685 /* Input section has been discarded, either because
8686 it is a copy of a linkonce section or due to
8687 linker script /DISCARD/, so we'll be discarding
8690 else if (p->count != 0)
8692 srel = elf_section_data (p->sec)->sreloc;
8693 if (!htab->elf.dynamic_sections_created)
8694 srel = htab->reliplt;
8695 srel->size += p->count * sizeof (Elf64_External_Rela);
8696 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8697 info->flags |= DF_TEXTREL;
8702 lgot_ents = elf_local_got_ents (ibfd);
8706 symtab_hdr = &elf_symtab_hdr (ibfd);
8707 locsymcount = symtab_hdr->sh_info;
8708 end_lgot_ents = lgot_ents + locsymcount;
8709 local_plt = (struct plt_entry **) end_lgot_ents;
8710 end_local_plt = local_plt + locsymcount;
8711 lgot_masks = (unsigned char *) end_local_plt;
8712 s = ppc64_elf_tdata (ibfd)->got;
8713 srel = ppc64_elf_tdata (ibfd)->relgot;
8714 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
8716 struct got_entry **pent, *ent;
8719 while ((ent = *pent) != NULL)
8720 if (ent->got.refcount > 0)
8722 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
8724 ppc64_tlsld_got (ibfd)->got.refcount += 1;
8729 unsigned int num = 1;
8730 ent->got.offset = s->size;
8731 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
8735 srel->size += num * sizeof (Elf64_External_Rela);
8736 else if ((*lgot_masks & PLT_IFUNC) != 0)
8739 += num * sizeof (Elf64_External_Rela);
8741 += num * sizeof (Elf64_External_Rela);
8750 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8751 for (; local_plt < end_local_plt; ++local_plt)
8753 struct plt_entry *ent;
8755 for (ent = *local_plt; ent != NULL; ent = ent->next)
8756 if (ent->plt.refcount > 0)
8759 ent->plt.offset = s->size;
8760 s->size += PLT_ENTRY_SIZE;
8762 htab->reliplt->size += sizeof (Elf64_External_Rela);
8765 ent->plt.offset = (bfd_vma) -1;
8769 /* Allocate global sym .plt and .got entries, and space for global
8770 sym dynamic relocs. */
8771 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
8774 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8776 struct got_entry *ent;
8778 if (!is_ppc64_elf (ibfd))
8781 ent = ppc64_tlsld_got (ibfd);
8782 if (ent->got.refcount > 0)
8784 if (!htab->do_multi_toc && first_tlsld != NULL)
8786 ent->is_indirect = TRUE;
8787 ent->got.ent = first_tlsld;
8791 if (first_tlsld == NULL)
8793 s = ppc64_elf_tdata (ibfd)->got;
8794 ent->got.offset = s->size;
8799 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
8800 srel->size += sizeof (Elf64_External_Rela);
8805 ent->got.offset = (bfd_vma) -1;
8808 /* We now have determined the sizes of the various dynamic sections.
8809 Allocate memory for them. */
8811 for (s = dynobj->sections; s != NULL; s = s->next)
8813 if ((s->flags & SEC_LINKER_CREATED) == 0)
8816 if (s == htab->brlt || s == htab->relbrlt)
8817 /* These haven't been allocated yet; don't strip. */
8819 else if (s == htab->got
8823 || s == htab->dynbss)
8825 /* Strip this section if we don't need it; see the
8828 else if (CONST_STRNEQ (s->name, ".rela"))
8832 if (s != htab->relplt)
8835 /* We use the reloc_count field as a counter if we need
8836 to copy relocs into the output file. */
8842 /* It's not one of our sections, so don't allocate space. */
8848 /* If we don't need this section, strip it from the
8849 output file. This is mostly to handle .rela.bss and
8850 .rela.plt. We must create both sections in
8851 create_dynamic_sections, because they must be created
8852 before the linker maps input sections to output
8853 sections. The linker does that before
8854 adjust_dynamic_symbol is called, and it is that
8855 function which decides whether anything needs to go
8856 into these sections. */
8857 s->flags |= SEC_EXCLUDE;
8861 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8864 /* Allocate memory for the section contents. We use bfd_zalloc
8865 here in case unused entries are not reclaimed before the
8866 section's contents are written out. This should not happen,
8867 but this way if it does we get a R_PPC64_NONE reloc in .rela
8868 sections instead of garbage.
8869 We also rely on the section contents being zero when writing
8871 s->contents = bfd_zalloc (dynobj, s->size);
8872 if (s->contents == NULL)
8876 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8878 if (!is_ppc64_elf (ibfd))
8881 s = ppc64_elf_tdata (ibfd)->got;
8882 if (s != NULL && s != htab->got)
8885 s->flags |= SEC_EXCLUDE;
8888 s->contents = bfd_zalloc (ibfd, s->size);
8889 if (s->contents == NULL)
8893 s = ppc64_elf_tdata (ibfd)->relgot;
8897 s->flags |= SEC_EXCLUDE;
8900 s->contents = bfd_zalloc (ibfd, s->size);
8901 if (s->contents == NULL)
8909 if (htab->elf.dynamic_sections_created)
8911 /* Add some entries to the .dynamic section. We fill in the
8912 values later, in ppc64_elf_finish_dynamic_sections, but we
8913 must add the entries now so that we get the correct size for
8914 the .dynamic section. The DT_DEBUG entry is filled in by the
8915 dynamic linker and used by the debugger. */
8916 #define add_dynamic_entry(TAG, VAL) \
8917 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8919 if (info->executable)
8921 if (!add_dynamic_entry (DT_DEBUG, 0))
8925 if (htab->plt != NULL && htab->plt->size != 0)
8927 if (!add_dynamic_entry (DT_PLTGOT, 0)
8928 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8929 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8930 || !add_dynamic_entry (DT_JMPREL, 0)
8931 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
8937 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8938 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
8942 if (!htab->no_tls_get_addr_opt
8943 && htab->tls_get_addr_fd != NULL
8944 && htab->tls_get_addr_fd->elf.plt.plist != NULL
8945 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
8950 if (!add_dynamic_entry (DT_RELA, 0)
8951 || !add_dynamic_entry (DT_RELASZ, 0)
8952 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
8955 /* If any dynamic relocs apply to a read-only section,
8956 then we need a DT_TEXTREL entry. */
8957 if ((info->flags & DF_TEXTREL) == 0)
8958 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
8960 if ((info->flags & DF_TEXTREL) != 0)
8962 if (!add_dynamic_entry (DT_TEXTREL, 0))
8967 #undef add_dynamic_entry
8972 /* Determine the type of stub needed, if any, for a call. */
8974 static inline enum ppc_stub_type
8975 ppc_type_of_stub (asection *input_sec,
8976 const Elf_Internal_Rela *rel,
8977 struct ppc_link_hash_entry **hash,
8978 struct plt_entry **plt_ent,
8979 bfd_vma destination)
8981 struct ppc_link_hash_entry *h = *hash;
8983 bfd_vma branch_offset;
8984 bfd_vma max_branch_offset;
8985 enum elf_ppc64_reloc_type r_type;
8989 struct plt_entry *ent;
8990 struct ppc_link_hash_entry *fdh = h;
8992 && h->oh->is_func_descriptor)
8994 fdh = ppc_follow_link (h->oh);
8998 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
8999 if (ent->addend == rel->r_addend
9000 && ent->plt.offset != (bfd_vma) -1)
9003 return ppc_stub_plt_call;
9006 /* Here, we know we don't have a plt entry. If we don't have a
9007 either a defined function descriptor or a defined entry symbol
9008 in a regular object file, then it is pointless trying to make
9009 any other type of stub. */
9010 if (!((fdh->elf.root.type == bfd_link_hash_defined
9011 || fdh->elf.root.type == bfd_link_hash_defweak)
9012 && fdh->elf.root.u.def.section->output_section != NULL)
9013 && !((h->elf.root.type == bfd_link_hash_defined
9014 || h->elf.root.type == bfd_link_hash_defweak)
9015 && h->elf.root.u.def.section->output_section != NULL))
9016 return ppc_stub_none;
9018 else if (elf_local_got_ents (input_sec->owner) != NULL)
9020 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9021 struct plt_entry **local_plt = (struct plt_entry **)
9022 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9023 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9025 if (local_plt[r_symndx] != NULL)
9027 struct plt_entry *ent;
9029 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9030 if (ent->addend == rel->r_addend
9031 && ent->plt.offset != (bfd_vma) -1)
9034 return ppc_stub_plt_call;
9039 /* Determine where the call point is. */
9040 location = (input_sec->output_offset
9041 + input_sec->output_section->vma
9044 branch_offset = destination - location;
9045 r_type = ELF64_R_TYPE (rel->r_info);
9047 /* Determine if a long branch stub is needed. */
9048 max_branch_offset = 1 << 25;
9049 if (r_type != R_PPC64_REL24)
9050 max_branch_offset = 1 << 15;
9052 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9053 /* We need a stub. Figure out whether a long_branch or plt_branch
9055 return ppc_stub_long_branch;
9057 return ppc_stub_none;
9060 /* Build a .plt call stub. */
9062 static inline bfd_byte *
9063 build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
9065 #define PPC_LO(v) ((v) & 0xffff)
9066 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9067 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9069 if (PPC_HA (offset) != 0)
9073 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9074 r[1].r_offset = r[0].r_offset + 8;
9075 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9076 r[1].r_addend = r[0].r_addend;
9077 if (PPC_HA (offset + 16) != PPC_HA (offset))
9079 r[2].r_offset = r[1].r_offset + 4;
9080 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9081 r[2].r_addend = r[0].r_addend;
9085 r[2].r_offset = r[1].r_offset + 8;
9086 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9087 r[2].r_addend = r[0].r_addend + 8;
9088 r[3].r_offset = r[2].r_offset + 4;
9089 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9090 r[3].r_addend = r[0].r_addend + 16;
9093 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9094 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9095 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9096 if (PPC_HA (offset + 16) != PPC_HA (offset))
9098 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9101 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9102 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9103 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9104 bfd_put_32 (obfd, BCTR, p), p += 4;
9111 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9112 if (PPC_HA (offset + 16) != PPC_HA (offset))
9114 r[1].r_offset = r[0].r_offset + 4;
9115 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9116 r[1].r_addend = r[0].r_addend;
9120 r[1].r_offset = r[0].r_offset + 8;
9121 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9122 r[1].r_addend = r[0].r_addend + 16;
9123 r[2].r_offset = r[1].r_offset + 4;
9124 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9125 r[2].r_addend = r[0].r_addend + 8;
9128 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9129 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9130 if (PPC_HA (offset + 16) != PPC_HA (offset))
9132 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9135 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9136 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9137 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9138 bfd_put_32 (obfd, BCTR, p), p += 4;
9143 /* Build a special .plt call stub for __tls_get_addr. */
9145 #define LD_R11_0R3 0xe9630000
9146 #define LD_R12_0R3 0xe9830000
9147 #define MR_R0_R3 0x7c601b78
9148 #define CMPDI_R11_0 0x2c2b0000
9149 #define ADD_R3_R12_R13 0x7c6c6a14
9150 #define BEQLR 0x4d820020
9151 #define MR_R3_R0 0x7c030378
9152 #define MFLR_R11 0x7d6802a6
9153 #define STD_R11_0R1 0xf9610000
9154 #define BCTRL 0x4e800421
9155 #define LD_R11_0R1 0xe9610000
9156 #define LD_R2_0R1 0xe8410000
9157 #define MTLR_R11 0x7d6803a6
9159 static inline bfd_byte *
9160 build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset,
9161 Elf_Internal_Rela *r)
9163 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9164 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9165 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9166 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9167 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9168 bfd_put_32 (obfd, BEQLR, p), p += 4;
9169 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9170 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9171 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9174 r[0].r_offset += 9 * 4;
9175 p = build_plt_stub (obfd, p, offset, r);
9176 bfd_put_32 (obfd, BCTRL, p - 4);
9178 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9179 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9180 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9181 bfd_put_32 (obfd, BLR, p), p += 4;
9186 static Elf_Internal_Rela *
9187 get_relocs (asection *sec, int count)
9189 Elf_Internal_Rela *relocs;
9190 struct bfd_elf_section_data *elfsec_data;
9192 elfsec_data = elf_section_data (sec);
9193 relocs = elfsec_data->relocs;
9196 bfd_size_type relsize;
9197 relsize = sec->reloc_count * sizeof (*relocs);
9198 relocs = bfd_alloc (sec->owner, relsize);
9201 elfsec_data->relocs = relocs;
9202 elfsec_data->rel_hdr.sh_size = (sec->reloc_count
9203 * sizeof (Elf64_External_Rela));
9204 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
9205 sec->reloc_count = 0;
9207 relocs += sec->reloc_count;
9208 sec->reloc_count += count;
9213 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9215 struct ppc_stub_hash_entry *stub_entry;
9216 struct ppc_branch_hash_entry *br_entry;
9217 struct bfd_link_info *info;
9218 struct ppc_link_hash_table *htab;
9223 Elf_Internal_Rela *r;
9226 /* Massage our args to the form they really have. */
9227 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9230 htab = ppc_hash_table (info);
9234 /* Make a note of the offset within the stubs for this entry. */
9235 stub_entry->stub_offset = stub_entry->stub_sec->size;
9236 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9238 htab->stub_count[stub_entry->stub_type - 1] += 1;
9239 switch (stub_entry->stub_type)
9241 case ppc_stub_long_branch:
9242 case ppc_stub_long_branch_r2off:
9243 /* Branches are relative. This is where we are going to. */
9244 off = dest = (stub_entry->target_value
9245 + stub_entry->target_section->output_offset
9246 + stub_entry->target_section->output_section->vma);
9248 /* And this is where we are coming from. */
9249 off -= (stub_entry->stub_offset
9250 + stub_entry->stub_sec->output_offset
9251 + stub_entry->stub_sec->output_section->vma);
9254 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9258 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9259 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9260 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9263 if (PPC_HA (r2off) != 0)
9266 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9269 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9273 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9275 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9277 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
9278 stub_entry->root.string);
9279 htab->stub_error = TRUE;
9283 if (info->emitrelocations)
9285 r = get_relocs (stub_entry->stub_sec, 1);
9288 r->r_offset = loc - stub_entry->stub_sec->contents;
9289 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9291 if (stub_entry->h != NULL)
9293 struct elf_link_hash_entry **hashes;
9294 unsigned long symndx;
9295 struct ppc_link_hash_entry *h;
9297 hashes = elf_sym_hashes (htab->stub_bfd);
9300 bfd_size_type hsize;
9302 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9303 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9306 elf_sym_hashes (htab->stub_bfd) = hashes;
9307 htab->stub_globals = 1;
9309 symndx = htab->stub_globals++;
9311 hashes[symndx] = &h->elf;
9312 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9313 if (h->oh != NULL && h->oh->is_func)
9314 h = ppc_follow_link (h->oh);
9315 if (h->elf.root.u.def.section != stub_entry->target_section)
9316 /* H is an opd symbol. The addend must be zero. */
9320 off = (h->elf.root.u.def.value
9321 + h->elf.root.u.def.section->output_offset
9322 + h->elf.root.u.def.section->output_section->vma);
9329 case ppc_stub_plt_branch:
9330 case ppc_stub_plt_branch_r2off:
9331 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9332 stub_entry->root.string + 9,
9334 if (br_entry == NULL)
9336 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
9337 stub_entry->root.string);
9338 htab->stub_error = TRUE;
9342 dest = (stub_entry->target_value
9343 + stub_entry->target_section->output_offset
9344 + stub_entry->target_section->output_section->vma);
9346 bfd_put_64 (htab->brlt->owner, dest,
9347 htab->brlt->contents + br_entry->offset);
9349 if (br_entry->iter == htab->stub_iteration)
9353 if (htab->relbrlt != NULL)
9355 /* Create a reloc for the branch lookup table entry. */
9356 Elf_Internal_Rela rela;
9359 rela.r_offset = (br_entry->offset
9360 + htab->brlt->output_offset
9361 + htab->brlt->output_section->vma);
9362 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9363 rela.r_addend = dest;
9365 rl = htab->relbrlt->contents;
9366 rl += (htab->relbrlt->reloc_count++
9367 * sizeof (Elf64_External_Rela));
9368 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9370 else if (info->emitrelocations)
9372 r = get_relocs (htab->brlt, 1);
9375 /* brlt, being SEC_LINKER_CREATED does not go through the
9376 normal reloc processing. Symbols and offsets are not
9377 translated from input file to output file form, so
9378 set up the offset per the output file. */
9379 r->r_offset = (br_entry->offset
9380 + htab->brlt->output_offset
9381 + htab->brlt->output_section->vma);
9382 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9387 dest = (br_entry->offset
9388 + htab->brlt->output_offset
9389 + htab->brlt->output_section->vma);
9392 - elf_gp (htab->brlt->output_section->owner)
9393 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9395 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9397 (*_bfd_error_handler)
9398 (_("linkage table error against `%s'"),
9399 stub_entry->root.string);
9400 bfd_set_error (bfd_error_bad_value);
9401 htab->stub_error = TRUE;
9405 if (info->emitrelocations)
9407 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
9410 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9411 if (bfd_big_endian (info->output_bfd))
9413 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
9415 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9416 r[0].r_addend = dest;
9417 if (PPC_HA (off) != 0)
9419 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9420 r[1].r_offset = r[0].r_offset + 4;
9421 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9422 r[1].r_addend = r[0].r_addend;
9426 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9428 if (PPC_HA (off) != 0)
9431 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9433 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9438 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9445 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9446 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9447 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9450 if (PPC_HA (off) != 0)
9453 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9455 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9460 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9464 if (PPC_HA (r2off) != 0)
9467 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9470 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9473 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
9475 bfd_put_32 (htab->stub_bfd, BCTR, loc);
9478 case ppc_stub_plt_call:
9479 if (stub_entry->h != NULL
9480 && stub_entry->h->is_func_descriptor
9481 && stub_entry->h->oh != NULL)
9483 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
9485 /* If the old-ABI "dot-symbol" is undefined make it weak so
9486 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9487 FIXME: We used to define the symbol on one of the call
9488 stubs instead, which is why we test symbol section id
9489 against htab->top_id in various places. Likely all
9490 these checks could now disappear. */
9491 if (fh->elf.root.type == bfd_link_hash_undefined)
9492 fh->elf.root.type = bfd_link_hash_undefweak;
9495 /* Now build the stub. */
9496 dest = stub_entry->plt_ent->plt.offset & ~1;
9497 if (dest >= (bfd_vma) -2)
9501 if (!htab->elf.dynamic_sections_created
9502 || stub_entry->h == NULL
9503 || stub_entry->h->elf.dynindx == -1)
9506 dest += plt->output_offset + plt->output_section->vma;
9508 if (stub_entry->h == NULL
9509 && (stub_entry->plt_ent->plt.offset & 1) == 0)
9511 Elf_Internal_Rela rela;
9514 rela.r_offset = dest;
9515 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
9516 rela.r_addend = (stub_entry->target_value
9517 + stub_entry->target_section->output_offset
9518 + stub_entry->target_section->output_section->vma);
9520 rl = (htab->reliplt->contents
9521 + (htab->reliplt->reloc_count++
9522 * sizeof (Elf64_External_Rela)));
9523 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
9524 stub_entry->plt_ent->plt.offset |= 1;
9528 - elf_gp (plt->output_section->owner)
9529 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9531 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9533 (*_bfd_error_handler)
9534 (_("linkage table error against `%s'"),
9535 stub_entry->h != NULL
9536 ? stub_entry->h->elf.root.root.string
9538 bfd_set_error (bfd_error_bad_value);
9539 htab->stub_error = TRUE;
9544 if (info->emitrelocations)
9546 r = get_relocs (stub_entry->stub_sec,
9547 (2 + (PPC_HA (off) != 0)
9548 + (PPC_HA (off + 16) == PPC_HA (off))));
9551 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9552 if (bfd_big_endian (info->output_bfd))
9554 r[0].r_addend = dest;
9556 if (stub_entry->h != NULL
9557 && (stub_entry->h == htab->tls_get_addr_fd
9558 || stub_entry->h == htab->tls_get_addr)
9559 && !htab->no_tls_get_addr_opt)
9560 p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r);
9562 p = build_plt_stub (htab->stub_bfd, loc, off, r);
9571 stub_entry->stub_sec->size += size;
9573 if (htab->emit_stub_syms)
9575 struct elf_link_hash_entry *h;
9578 const char *const stub_str[] = { "long_branch",
9579 "long_branch_r2off",
9584 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
9585 len2 = strlen (stub_entry->root.string);
9586 name = bfd_malloc (len1 + len2 + 2);
9589 memcpy (name, stub_entry->root.string, 9);
9590 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
9591 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
9592 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
9595 if (h->root.type == bfd_link_hash_new)
9597 h->root.type = bfd_link_hash_defined;
9598 h->root.u.def.section = stub_entry->stub_sec;
9599 h->root.u.def.value = stub_entry->stub_offset;
9602 h->ref_regular_nonweak = 1;
9603 h->forced_local = 1;
9611 /* As above, but don't actually build the stub. Just bump offset so
9612 we know stub section sizes, and select plt_branch stubs where
9613 long_branch stubs won't do. */
9616 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9618 struct ppc_stub_hash_entry *stub_entry;
9619 struct bfd_link_info *info;
9620 struct ppc_link_hash_table *htab;
9624 /* Massage our args to the form they really have. */
9625 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9628 htab = ppc_hash_table (info);
9632 if (stub_entry->stub_type == ppc_stub_plt_call)
9635 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
9636 if (off >= (bfd_vma) -2)
9639 if (!htab->elf.dynamic_sections_created
9640 || stub_entry->h == NULL
9641 || stub_entry->h->elf.dynindx == -1)
9643 off += (plt->output_offset
9644 + plt->output_section->vma
9645 - elf_gp (plt->output_section->owner)
9646 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9648 size = PLT_CALL_STUB_SIZE;
9649 if (PPC_HA (off) == 0)
9651 if (PPC_HA (off + 16) != PPC_HA (off))
9653 if (stub_entry->h != NULL
9654 && (stub_entry->h == htab->tls_get_addr_fd
9655 || stub_entry->h == htab->tls_get_addr)
9656 && !htab->no_tls_get_addr_opt)
9658 if (info->emitrelocations)
9660 stub_entry->stub_sec->reloc_count
9661 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
9662 stub_entry->stub_sec->flags |= SEC_RELOC;
9667 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9671 off = (stub_entry->target_value
9672 + stub_entry->target_section->output_offset
9673 + stub_entry->target_section->output_section->vma);
9674 off -= (stub_entry->stub_sec->size
9675 + stub_entry->stub_sec->output_offset
9676 + stub_entry->stub_sec->output_section->vma);
9678 /* Reset the stub type from the plt variant in case we now
9679 can reach with a shorter stub. */
9680 if (stub_entry->stub_type >= ppc_stub_plt_branch)
9681 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
9684 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9686 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9687 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9689 if (PPC_HA (r2off) != 0)
9694 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9695 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9697 struct ppc_branch_hash_entry *br_entry;
9699 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9700 stub_entry->root.string + 9,
9702 if (br_entry == NULL)
9704 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
9705 stub_entry->root.string);
9706 htab->stub_error = TRUE;
9710 if (br_entry->iter != htab->stub_iteration)
9712 br_entry->iter = htab->stub_iteration;
9713 br_entry->offset = htab->brlt->size;
9714 htab->brlt->size += 8;
9716 if (htab->relbrlt != NULL)
9717 htab->relbrlt->size += sizeof (Elf64_External_Rela);
9718 else if (info->emitrelocations)
9720 htab->brlt->reloc_count += 1;
9721 htab->brlt->flags |= SEC_RELOC;
9725 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
9726 off = (br_entry->offset
9727 + htab->brlt->output_offset
9728 + htab->brlt->output_section->vma
9729 - elf_gp (htab->brlt->output_section->owner)
9730 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9732 if (info->emitrelocations)
9734 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
9735 stub_entry->stub_sec->flags |= SEC_RELOC;
9738 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9741 if (PPC_HA (off) != 0)
9747 if (PPC_HA (off) != 0)
9750 if (PPC_HA (r2off) != 0)
9754 else if (info->emitrelocations)
9756 stub_entry->stub_sec->reloc_count += 1;
9757 stub_entry->stub_sec->flags |= SEC_RELOC;
9761 stub_entry->stub_sec->size += size;
9765 /* Set up various things so that we can make a list of input sections
9766 for each output section included in the link. Returns -1 on error,
9767 0 when no stubs will be needed, and 1 on success. */
9770 ppc64_elf_setup_section_lists
9771 (struct bfd_link_info *info,
9772 asection *(*add_stub_section) (const char *, asection *),
9773 void (*layout_sections_again) (void))
9776 int top_id, top_index, id;
9778 asection **input_list;
9780 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9784 /* Stash our params away. */
9785 htab->add_stub_section = add_stub_section;
9786 htab->layout_sections_again = layout_sections_again;
9788 if (htab->brlt == NULL)
9791 /* Find the top input section id. */
9792 for (input_bfd = info->input_bfds, top_id = 3;
9794 input_bfd = input_bfd->link_next)
9796 for (section = input_bfd->sections;
9798 section = section->next)
9800 if (top_id < section->id)
9801 top_id = section->id;
9805 htab->top_id = top_id;
9806 amt = sizeof (struct map_stub) * (top_id + 1);
9807 htab->stub_group = bfd_zmalloc (amt);
9808 if (htab->stub_group == NULL)
9811 /* Set toc_off for com, und, abs and ind sections. */
9812 for (id = 0; id < 3; id++)
9813 htab->stub_group[id].toc_off = TOC_BASE_OFF;
9815 /* We can't use output_bfd->section_count here to find the top output
9816 section index as some sections may have been removed, and
9817 strip_excluded_output_sections doesn't renumber the indices. */
9818 for (section = info->output_bfd->sections, top_index = 0;
9820 section = section->next)
9822 if (top_index < section->index)
9823 top_index = section->index;
9826 htab->top_index = top_index;
9827 amt = sizeof (asection *) * (top_index + 1);
9828 input_list = bfd_zmalloc (amt);
9829 htab->input_list = input_list;
9830 if (input_list == NULL)
9836 /* Set up for first pass at multitoc partitioning. */
9839 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
9841 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9843 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
9844 htab->toc_curr = elf_gp (info->output_bfd);
9845 htab->toc_bfd = NULL;
9846 htab->toc_first_sec = NULL;
9849 /* The linker repeatedly calls this function for each TOC input section
9850 and linker generated GOT section. Group input bfds such that the toc
9851 within a group is less than 64k in size. */
9854 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
9856 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9857 bfd_vma addr, off, limit;
9862 if (!htab->second_toc_pass)
9864 /* Keep track of the first .toc or .got section for this input bfd. */
9865 if (htab->toc_bfd != isec->owner)
9867 htab->toc_bfd = isec->owner;
9868 htab->toc_first_sec = isec;
9871 addr = isec->output_offset + isec->output_section->vma;
9872 off = addr - htab->toc_curr;
9874 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
9876 if (off + isec->size > limit)
9878 addr = (htab->toc_first_sec->output_offset
9879 + htab->toc_first_sec->output_section->vma);
9880 htab->toc_curr = addr;
9883 /* toc_curr is the base address of this toc group. Set elf_gp
9884 for the input section to be the offset relative to the
9885 output toc base plus 0x8000. Making the input elf_gp an
9886 offset allows us to move the toc as a whole without
9887 recalculating input elf_gp. */
9888 off = htab->toc_curr - elf_gp (isec->output_section->owner);
9889 off += TOC_BASE_OFF;
9891 /* Die if someone uses a linker script that doesn't keep input
9892 file .toc and .got together. */
9893 if (elf_gp (isec->owner) != 0
9894 && elf_gp (isec->owner) != off)
9897 elf_gp (isec->owner) = off;
9901 /* During the second pass toc_first_sec points to the start of
9902 a toc group, and toc_curr is used to track the old elf_gp.
9903 We use toc_bfd to ensure we only look at each bfd once. */
9904 if (htab->toc_bfd == isec->owner)
9906 htab->toc_bfd = isec->owner;
9908 if (htab->toc_first_sec == NULL
9909 || htab->toc_curr != elf_gp (isec->owner))
9911 htab->toc_curr = elf_gp (isec->owner);
9912 htab->toc_first_sec = isec;
9914 addr = (htab->toc_first_sec->output_offset
9915 + htab->toc_first_sec->output_section->vma);
9916 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
9917 elf_gp (isec->owner) = off;
9922 /* Called via elf_link_hash_traverse to merge GOT entries for global
9926 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9928 if (h->root.type == bfd_link_hash_indirect)
9931 if (h->root.type == bfd_link_hash_warning)
9932 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9934 merge_got_entries (&h->got.glist);
9939 /* Called via elf_link_hash_traverse to allocate GOT entries for global
9943 reallocate_got (struct elf_link_hash_entry *h, void *inf)
9945 struct got_entry *gent;
9947 if (h->root.type == bfd_link_hash_indirect)
9950 if (h->root.type == bfd_link_hash_warning)
9951 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9953 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9954 if (!gent->is_indirect)
9955 allocate_got (h, (struct bfd_link_info *) inf, gent);
9959 /* Called on the first multitoc pass after the last call to
9960 ppc64_elf_next_toc_section. This function removes duplicate GOT
9964 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
9966 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9967 struct bfd *ibfd, *ibfd2;
9968 bfd_boolean done_something;
9970 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
9972 if (!htab->do_multi_toc)
9975 /* Merge global sym got entries within a toc group. */
9976 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
9978 /* And tlsld_got. */
9979 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9981 struct got_entry *ent, *ent2;
9983 if (!is_ppc64_elf (ibfd))
9986 ent = ppc64_tlsld_got (ibfd);
9987 if (!ent->is_indirect
9988 && ent->got.offset != (bfd_vma) -1)
9990 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
9992 if (!is_ppc64_elf (ibfd2))
9995 ent2 = ppc64_tlsld_got (ibfd2);
9996 if (!ent2->is_indirect
9997 && ent2->got.offset != (bfd_vma) -1
9998 && elf_gp (ibfd2) == elf_gp (ibfd))
10000 ent2->is_indirect = TRUE;
10001 ent2->got.ent = ent;
10007 /* Zap sizes of got sections. */
10008 htab->reliplt->rawsize = htab->reliplt->size;
10009 htab->reliplt->size -= htab->got_reli_size;
10010 htab->got_reli_size = 0;
10012 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10014 asection *got, *relgot;
10016 if (!is_ppc64_elf (ibfd))
10019 got = ppc64_elf_tdata (ibfd)->got;
10022 got->rawsize = got->size;
10024 relgot = ppc64_elf_tdata (ibfd)->relgot;
10025 relgot->rawsize = relgot->size;
10030 /* Now reallocate the got, local syms first. We don't need to
10031 allocate section contents again since we never increase size. */
10032 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10034 struct got_entry **lgot_ents;
10035 struct got_entry **end_lgot_ents;
10036 struct plt_entry **local_plt;
10037 struct plt_entry **end_local_plt;
10038 unsigned char *lgot_masks;
10039 bfd_size_type locsymcount;
10040 Elf_Internal_Shdr *symtab_hdr;
10041 asection *s, *srel;
10043 if (!is_ppc64_elf (ibfd))
10046 lgot_ents = elf_local_got_ents (ibfd);
10050 symtab_hdr = &elf_symtab_hdr (ibfd);
10051 locsymcount = symtab_hdr->sh_info;
10052 end_lgot_ents = lgot_ents + locsymcount;
10053 local_plt = (struct plt_entry **) end_lgot_ents;
10054 end_local_plt = local_plt + locsymcount;
10055 lgot_masks = (unsigned char *) end_local_plt;
10056 s = ppc64_elf_tdata (ibfd)->got;
10057 srel = ppc64_elf_tdata (ibfd)->relgot;
10058 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10060 struct got_entry *ent;
10062 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10064 unsigned int num = 1;
10065 ent->got.offset = s->size;
10066 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10068 s->size += num * 8;
10070 srel->size += num * sizeof (Elf64_External_Rela);
10071 else if ((*lgot_masks & PLT_IFUNC) != 0)
10073 htab->reliplt->size
10074 += num * sizeof (Elf64_External_Rela);
10075 htab->got_reli_size
10076 += num * sizeof (Elf64_External_Rela);
10082 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10084 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10086 struct got_entry *ent;
10088 if (!is_ppc64_elf (ibfd))
10091 ent = ppc64_tlsld_got (ibfd);
10092 if (!ent->is_indirect
10093 && ent->got.offset != (bfd_vma) -1)
10095 asection *s = ppc64_elf_tdata (ibfd)->got;
10096 ent->got.offset = s->size;
10100 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10101 srel->size += sizeof (Elf64_External_Rela);
10106 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10107 if (!done_something)
10108 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10112 if (!is_ppc64_elf (ibfd))
10115 got = ppc64_elf_tdata (ibfd)->got;
10118 done_something = got->rawsize != got->size;
10119 if (done_something)
10124 if (done_something)
10125 (*htab->layout_sections_again) ();
10127 /* Set up for second pass over toc sections to recalculate elf_gp
10128 on input sections. */
10129 htab->toc_bfd = NULL;
10130 htab->toc_first_sec = NULL;
10131 htab->second_toc_pass = TRUE;
10132 return done_something;
10135 /* Called after second pass of multitoc partitioning. */
10138 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10140 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10142 /* After the second pass, toc_curr tracks the TOC offset used
10143 for code sections below in ppc64_elf_next_input_section. */
10144 htab->toc_curr = TOC_BASE_OFF;
10147 /* No toc references were found in ISEC. If the code in ISEC makes no
10148 calls, then there's no need to use toc adjusting stubs when branching
10149 into ISEC. Actually, indirect calls from ISEC are OK as they will
10150 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10151 needed, and 2 if a cyclical call-graph was found but no other reason
10152 for a stub was detected. If called from the top level, a return of
10153 2 means the same as a return of 0. */
10156 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10160 /* Mark this section as checked. */
10161 isec->call_check_done = 1;
10163 /* We know none of our code bearing sections will need toc stubs. */
10164 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10167 if (isec->size == 0)
10170 if (isec->output_section == NULL)
10174 if (isec->reloc_count != 0)
10176 Elf_Internal_Rela *relstart, *rel;
10177 Elf_Internal_Sym *local_syms;
10178 struct ppc_link_hash_table *htab;
10180 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10181 info->keep_memory);
10182 if (relstart == NULL)
10185 /* Look for branches to outside of this section. */
10187 htab = ppc_hash_table (info);
10191 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10193 enum elf_ppc64_reloc_type r_type;
10194 unsigned long r_symndx;
10195 struct elf_link_hash_entry *h;
10196 struct ppc_link_hash_entry *eh;
10197 Elf_Internal_Sym *sym;
10199 struct _opd_sec_data *opd;
10203 r_type = ELF64_R_TYPE (rel->r_info);
10204 if (r_type != R_PPC64_REL24
10205 && r_type != R_PPC64_REL14
10206 && r_type != R_PPC64_REL14_BRTAKEN
10207 && r_type != R_PPC64_REL14_BRNTAKEN)
10210 r_symndx = ELF64_R_SYM (rel->r_info);
10211 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10218 /* Calls to dynamic lib functions go through a plt call stub
10220 eh = (struct ppc_link_hash_entry *) h;
10222 && (eh->elf.plt.plist != NULL
10224 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10230 if (sym_sec == NULL)
10231 /* Ignore other undefined symbols. */
10234 /* Assume branches to other sections not included in the
10235 link need stubs too, to cover -R and absolute syms. */
10236 if (sym_sec->output_section == NULL)
10243 sym_value = sym->st_value;
10246 if (h->root.type != bfd_link_hash_defined
10247 && h->root.type != bfd_link_hash_defweak)
10249 sym_value = h->root.u.def.value;
10251 sym_value += rel->r_addend;
10253 /* If this branch reloc uses an opd sym, find the code section. */
10254 opd = get_opd_info (sym_sec);
10257 if (h == NULL && opd->adjust != NULL)
10261 adjust = opd->adjust[sym->st_value / 8];
10263 /* Assume deleted functions won't ever be called. */
10265 sym_value += adjust;
10268 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10269 if (dest == (bfd_vma) -1)
10274 + sym_sec->output_offset
10275 + sym_sec->output_section->vma);
10277 /* Ignore branch to self. */
10278 if (sym_sec == isec)
10281 /* If the called function uses the toc, we need a stub. */
10282 if (sym_sec->has_toc_reloc
10283 || sym_sec->makes_toc_func_call)
10289 /* Assume any branch that needs a long branch stub might in fact
10290 need a plt_branch stub. A plt_branch stub uses r2. */
10291 else if (dest - (isec->output_offset
10292 + isec->output_section->vma
10293 + rel->r_offset) + (1 << 25) >= (2 << 25))
10299 /* If calling back to a section in the process of being
10300 tested, we can't say for sure that no toc adjusting stubs
10301 are needed, so don't return zero. */
10302 else if (sym_sec->call_check_in_progress)
10305 /* Branches to another section that itself doesn't have any TOC
10306 references are OK. Recursively call ourselves to check. */
10307 else if (!sym_sec->call_check_done)
10311 /* Mark current section as indeterminate, so that other
10312 sections that call back to current won't be marked as
10314 isec->call_check_in_progress = 1;
10315 recur = toc_adjusting_stub_needed (info, sym_sec);
10316 isec->call_check_in_progress = 0;
10327 if (local_syms != NULL
10328 && (elf_symtab_hdr (isec->owner).contents
10329 != (unsigned char *) local_syms))
10331 if (elf_section_data (isec)->relocs != relstart)
10336 && isec->map_head.s != NULL
10337 && (strcmp (isec->output_section->name, ".init") == 0
10338 || strcmp (isec->output_section->name, ".fini") == 0))
10340 if (isec->map_head.s->has_toc_reloc
10341 || isec->map_head.s->makes_toc_func_call)
10343 else if (!isec->map_head.s->call_check_done)
10346 isec->call_check_in_progress = 1;
10347 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
10348 isec->call_check_in_progress = 0;
10355 isec->makes_toc_func_call = 1;
10360 /* The linker repeatedly calls this function for each input section,
10361 in the order that input sections are linked into output sections.
10362 Build lists of input sections to determine groupings between which
10363 we may insert linker stubs. */
10366 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
10368 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10373 if ((isec->output_section->flags & SEC_CODE) != 0
10374 && isec->output_section->index <= htab->top_index)
10376 asection **list = htab->input_list + isec->output_section->index;
10377 /* Steal the link_sec pointer for our list. */
10378 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10379 /* This happens to make the list in reverse order,
10380 which is what we want. */
10381 PREV_SEC (isec) = *list;
10385 if (htab->multi_toc_needed)
10387 /* If a code section has a function that uses the TOC then we need
10388 to use the right TOC (obviously). Also, make sure that .opd gets
10389 the correct TOC value for R_PPC64_TOC relocs that don't have or
10390 can't find their function symbol (shouldn't ever happen now).
10391 Also specially treat .fixup for the linux kernel. .fixup
10392 contains branches, but only back to the function that hit an
10394 if (isec->has_toc_reloc
10395 || (isec->flags & SEC_CODE) == 0
10396 || strcmp (isec->name, ".fixup") == 0)
10398 if (elf_gp (isec->owner) != 0)
10399 htab->toc_curr = elf_gp (isec->owner);
10401 else if (!isec->call_check_done
10402 && toc_adjusting_stub_needed (info, isec) < 0)
10406 /* Functions that don't use the TOC can belong in any TOC group.
10407 Use the last TOC base. This happens to make _init and _fini
10408 pasting work, because the fragments generally don't use the TOC. */
10409 htab->stub_group[isec->id].toc_off = htab->toc_curr;
10413 /* Check that all .init and .fini sections use the same toc, if they
10414 have toc relocs. */
10417 check_pasted_section (struct bfd_link_info *info, const char *name)
10419 asection *o = bfd_get_section_by_name (info->output_bfd, name);
10423 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10424 bfd_vma toc_off = 0;
10427 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10428 if (i->has_toc_reloc)
10431 toc_off = htab->stub_group[i->id].toc_off;
10432 else if (toc_off != htab->stub_group[i->id].toc_off)
10435 /* Make sure the whole pasted function uses the same toc offset. */
10437 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10438 htab->stub_group[i->id].toc_off = toc_off;
10444 ppc64_elf_check_init_fini (struct bfd_link_info *info)
10446 return (check_pasted_section (info, ".init")
10447 & check_pasted_section (info, ".fini"));
10450 /* See whether we can group stub sections together. Grouping stub
10451 sections may result in fewer stubs. More importantly, we need to
10452 put all .init* and .fini* stubs at the beginning of the .init or
10453 .fini output sections respectively, because glibc splits the
10454 _init and _fini functions into multiple parts. Putting a stub in
10455 the middle of a function is not a good idea. */
10458 group_sections (struct ppc_link_hash_table *htab,
10459 bfd_size_type stub_group_size,
10460 bfd_boolean stubs_always_before_branch)
10463 bfd_size_type stub14_group_size;
10464 bfd_boolean suppress_size_errors;
10466 suppress_size_errors = FALSE;
10467 stub14_group_size = stub_group_size;
10468 if (stub_group_size == 1)
10470 /* Default values. */
10471 if (stubs_always_before_branch)
10473 stub_group_size = 0x1e00000;
10474 stub14_group_size = 0x7800;
10478 stub_group_size = 0x1c00000;
10479 stub14_group_size = 0x7000;
10481 suppress_size_errors = TRUE;
10484 list = htab->input_list + htab->top_index;
10487 asection *tail = *list;
10488 while (tail != NULL)
10492 bfd_size_type total;
10493 bfd_boolean big_sec;
10497 total = tail->size;
10498 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
10499 ? stub14_group_size : stub_group_size);
10500 if (big_sec && !suppress_size_errors)
10501 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
10502 tail->owner, tail);
10503 curr_toc = htab->stub_group[tail->id].toc_off;
10505 while ((prev = PREV_SEC (curr)) != NULL
10506 && ((total += curr->output_offset - prev->output_offset)
10507 < (ppc64_elf_section_data (prev)->has_14bit_branch
10508 ? stub14_group_size : stub_group_size))
10509 && htab->stub_group[prev->id].toc_off == curr_toc)
10512 /* OK, the size from the start of CURR to the end is less
10513 than stub_group_size and thus can be handled by one stub
10514 section. (or the tail section is itself larger than
10515 stub_group_size, in which case we may be toast.) We
10516 should really be keeping track of the total size of stubs
10517 added here, as stubs contribute to the final output
10518 section size. That's a little tricky, and this way will
10519 only break if stubs added make the total size more than
10520 2^25, ie. for the default stub_group_size, if stubs total
10521 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10524 prev = PREV_SEC (tail);
10525 /* Set up this stub group. */
10526 htab->stub_group[tail->id].link_sec = curr;
10528 while (tail != curr && (tail = prev) != NULL);
10530 /* But wait, there's more! Input sections up to stub_group_size
10531 bytes before the stub section can be handled by it too.
10532 Don't do this if we have a really large section after the
10533 stubs, as adding more stubs increases the chance that
10534 branches may not reach into the stub section. */
10535 if (!stubs_always_before_branch && !big_sec)
10538 while (prev != NULL
10539 && ((total += tail->output_offset - prev->output_offset)
10540 < (ppc64_elf_section_data (prev)->has_14bit_branch
10541 ? stub14_group_size : stub_group_size))
10542 && htab->stub_group[prev->id].toc_off == curr_toc)
10545 prev = PREV_SEC (tail);
10546 htab->stub_group[tail->id].link_sec = curr;
10552 while (list-- != htab->input_list);
10553 free (htab->input_list);
10557 /* Determine and set the size of the stub section for a final link.
10559 The basic idea here is to examine all the relocations looking for
10560 PC-relative calls to a target that is unreachable with a "bl"
10564 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size)
10566 bfd_size_type stub_group_size;
10567 bfd_boolean stubs_always_before_branch;
10568 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10573 stubs_always_before_branch = group_size < 0;
10574 if (group_size < 0)
10575 stub_group_size = -group_size;
10577 stub_group_size = group_size;
10579 group_sections (htab, stub_group_size, stubs_always_before_branch);
10584 unsigned int bfd_indx;
10585 asection *stub_sec;
10587 htab->stub_iteration += 1;
10589 for (input_bfd = info->input_bfds, bfd_indx = 0;
10591 input_bfd = input_bfd->link_next, bfd_indx++)
10593 Elf_Internal_Shdr *symtab_hdr;
10595 Elf_Internal_Sym *local_syms = NULL;
10597 if (!is_ppc64_elf (input_bfd))
10600 /* We'll need the symbol table in a second. */
10601 symtab_hdr = &elf_symtab_hdr (input_bfd);
10602 if (symtab_hdr->sh_info == 0)
10605 /* Walk over each section attached to the input bfd. */
10606 for (section = input_bfd->sections;
10608 section = section->next)
10610 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
10612 /* If there aren't any relocs, then there's nothing more
10614 if ((section->flags & SEC_RELOC) == 0
10615 || (section->flags & SEC_ALLOC) == 0
10616 || (section->flags & SEC_LOAD) == 0
10617 || (section->flags & SEC_CODE) == 0
10618 || section->reloc_count == 0)
10621 /* If this section is a link-once section that will be
10622 discarded, then don't create any stubs. */
10623 if (section->output_section == NULL
10624 || section->output_section->owner != info->output_bfd)
10627 /* Get the relocs. */
10629 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
10630 info->keep_memory);
10631 if (internal_relocs == NULL)
10632 goto error_ret_free_local;
10634 /* Now examine each relocation. */
10635 irela = internal_relocs;
10636 irelaend = irela + section->reloc_count;
10637 for (; irela < irelaend; irela++)
10639 enum elf_ppc64_reloc_type r_type;
10640 unsigned int r_indx;
10641 enum ppc_stub_type stub_type;
10642 struct ppc_stub_hash_entry *stub_entry;
10643 asection *sym_sec, *code_sec;
10644 bfd_vma sym_value, code_value;
10645 bfd_vma destination;
10646 bfd_boolean ok_dest;
10647 struct ppc_link_hash_entry *hash;
10648 struct ppc_link_hash_entry *fdh;
10649 struct elf_link_hash_entry *h;
10650 Elf_Internal_Sym *sym;
10652 const asection *id_sec;
10653 struct _opd_sec_data *opd;
10654 struct plt_entry *plt_ent;
10656 r_type = ELF64_R_TYPE (irela->r_info);
10657 r_indx = ELF64_R_SYM (irela->r_info);
10659 if (r_type >= R_PPC64_max)
10661 bfd_set_error (bfd_error_bad_value);
10662 goto error_ret_free_internal;
10665 /* Only look for stubs on branch instructions. */
10666 if (r_type != R_PPC64_REL24
10667 && r_type != R_PPC64_REL14
10668 && r_type != R_PPC64_REL14_BRTAKEN
10669 && r_type != R_PPC64_REL14_BRNTAKEN)
10672 /* Now determine the call target, its name, value,
10674 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
10675 r_indx, input_bfd))
10676 goto error_ret_free_internal;
10677 hash = (struct ppc_link_hash_entry *) h;
10684 sym_value = sym->st_value;
10687 else if (hash->elf.root.type == bfd_link_hash_defined
10688 || hash->elf.root.type == bfd_link_hash_defweak)
10690 sym_value = hash->elf.root.u.def.value;
10691 if (sym_sec->output_section != NULL)
10694 else if (hash->elf.root.type == bfd_link_hash_undefweak
10695 || hash->elf.root.type == bfd_link_hash_undefined)
10697 /* Recognise an old ABI func code entry sym, and
10698 use the func descriptor sym instead if it is
10700 if (hash->elf.root.root.string[0] == '.'
10701 && (fdh = lookup_fdh (hash, htab)) != NULL)
10703 if (fdh->elf.root.type == bfd_link_hash_defined
10704 || fdh->elf.root.type == bfd_link_hash_defweak)
10706 sym_sec = fdh->elf.root.u.def.section;
10707 sym_value = fdh->elf.root.u.def.value;
10708 if (sym_sec->output_section != NULL)
10717 bfd_set_error (bfd_error_bad_value);
10718 goto error_ret_free_internal;
10724 sym_value += irela->r_addend;
10725 destination = (sym_value
10726 + sym_sec->output_offset
10727 + sym_sec->output_section->vma);
10730 code_sec = sym_sec;
10731 code_value = sym_value;
10732 opd = get_opd_info (sym_sec);
10737 if (hash == NULL && opd->adjust != NULL)
10739 long adjust = opd->adjust[sym_value / 8];
10742 code_value += adjust;
10743 sym_value += adjust;
10745 dest = opd_entry_value (sym_sec, sym_value,
10746 &code_sec, &code_value);
10747 if (dest != (bfd_vma) -1)
10749 destination = dest;
10752 /* Fixup old ABI sym to point at code
10754 hash->elf.root.type = bfd_link_hash_defweak;
10755 hash->elf.root.u.def.section = code_sec;
10756 hash->elf.root.u.def.value = code_value;
10761 /* Determine what (if any) linker stub is needed. */
10763 stub_type = ppc_type_of_stub (section, irela, &hash,
10764 &plt_ent, destination);
10766 if (stub_type != ppc_stub_plt_call)
10768 /* Check whether we need a TOC adjusting stub.
10769 Since the linker pastes together pieces from
10770 different object files when creating the
10771 _init and _fini functions, it may be that a
10772 call to what looks like a local sym is in
10773 fact a call needing a TOC adjustment. */
10774 if (code_sec != NULL
10775 && code_sec->output_section != NULL
10776 && (htab->stub_group[code_sec->id].toc_off
10777 != htab->stub_group[section->id].toc_off)
10778 && (code_sec->has_toc_reloc
10779 || code_sec->makes_toc_func_call))
10780 stub_type = ppc_stub_long_branch_r2off;
10783 if (stub_type == ppc_stub_none)
10786 /* __tls_get_addr calls might be eliminated. */
10787 if (stub_type != ppc_stub_plt_call
10789 && (hash == htab->tls_get_addr
10790 || hash == htab->tls_get_addr_fd)
10791 && section->has_tls_reloc
10792 && irela != internal_relocs)
10794 /* Get tls info. */
10795 unsigned char *tls_mask;
10797 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
10798 irela - 1, input_bfd))
10799 goto error_ret_free_internal;
10800 if (*tls_mask != 0)
10804 /* Support for grouping stub sections. */
10805 id_sec = htab->stub_group[section->id].link_sec;
10807 /* Get the name of this stub. */
10808 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
10810 goto error_ret_free_internal;
10812 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
10813 stub_name, FALSE, FALSE);
10814 if (stub_entry != NULL)
10816 /* The proper stub has already been created. */
10821 stub_entry = ppc_add_stub (stub_name, section, htab);
10822 if (stub_entry == NULL)
10825 error_ret_free_internal:
10826 if (elf_section_data (section)->relocs == NULL)
10827 free (internal_relocs);
10828 error_ret_free_local:
10829 if (local_syms != NULL
10830 && (symtab_hdr->contents
10831 != (unsigned char *) local_syms))
10836 stub_entry->stub_type = stub_type;
10837 if (stub_type != ppc_stub_plt_call)
10839 stub_entry->target_value = code_value;
10840 stub_entry->target_section = code_sec;
10844 stub_entry->target_value = sym_value;
10845 stub_entry->target_section = sym_sec;
10847 stub_entry->h = hash;
10848 stub_entry->plt_ent = plt_ent;
10849 stub_entry->addend = irela->r_addend;
10851 if (stub_entry->h != NULL)
10852 htab->stub_globals += 1;
10855 /* We're done with the internal relocs, free them. */
10856 if (elf_section_data (section)->relocs != internal_relocs)
10857 free (internal_relocs);
10860 if (local_syms != NULL
10861 && symtab_hdr->contents != (unsigned char *) local_syms)
10863 if (!info->keep_memory)
10866 symtab_hdr->contents = (unsigned char *) local_syms;
10870 /* We may have added some stubs. Find out the new size of the
10872 for (stub_sec = htab->stub_bfd->sections;
10874 stub_sec = stub_sec->next)
10875 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
10877 stub_sec->rawsize = stub_sec->size;
10878 stub_sec->size = 0;
10879 stub_sec->reloc_count = 0;
10880 stub_sec->flags &= ~SEC_RELOC;
10883 htab->brlt->size = 0;
10884 htab->brlt->reloc_count = 0;
10885 htab->brlt->flags &= ~SEC_RELOC;
10886 if (htab->relbrlt != NULL)
10887 htab->relbrlt->size = 0;
10889 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
10891 if (info->emitrelocations
10892 && htab->glink != NULL && htab->glink->size != 0)
10894 htab->glink->reloc_count = 1;
10895 htab->glink->flags |= SEC_RELOC;
10898 for (stub_sec = htab->stub_bfd->sections;
10900 stub_sec = stub_sec->next)
10901 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
10902 && stub_sec->rawsize != stub_sec->size)
10905 /* Exit from this loop when no stubs have been added, and no stubs
10906 have changed size. */
10907 if (stub_sec == NULL)
10910 /* Ask the linker to do its stuff. */
10911 (*htab->layout_sections_again) ();
10914 /* It would be nice to strip htab->brlt from the output if the
10915 section is empty, but it's too late. If we strip sections here,
10916 the dynamic symbol table is corrupted since the section symbol
10917 for the stripped section isn't written. */
10922 /* Called after we have determined section placement. If sections
10923 move, we'll be called again. Provide a value for TOCstart. */
10926 ppc64_elf_toc (bfd *obfd)
10931 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
10932 order. The TOC starts where the first of these sections starts. */
10933 s = bfd_get_section_by_name (obfd, ".got");
10934 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10935 s = bfd_get_section_by_name (obfd, ".toc");
10936 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10937 s = bfd_get_section_by_name (obfd, ".tocbss");
10938 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10939 s = bfd_get_section_by_name (obfd, ".plt");
10940 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10942 /* This may happen for
10943 o references to TOC base (SYM@toc / TOC[tc0]) without a
10945 o bad linker script
10946 o --gc-sections and empty TOC sections
10948 FIXME: Warn user? */
10950 /* Look for a likely section. We probably won't even be
10952 for (s = obfd->sections; s != NULL; s = s->next)
10953 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
10955 == (SEC_ALLOC | SEC_SMALL_DATA))
10958 for (s = obfd->sections; s != NULL; s = s->next)
10959 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
10960 == (SEC_ALLOC | SEC_SMALL_DATA))
10963 for (s = obfd->sections; s != NULL; s = s->next)
10964 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
10968 for (s = obfd->sections; s != NULL; s = s->next)
10969 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
10975 TOCstart = s->output_section->vma + s->output_offset;
10980 /* Build all the stubs associated with the current output file.
10981 The stubs are kept in a hash table attached to the main linker
10982 hash table. This function is called via gldelf64ppc_finish. */
10985 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
10986 struct bfd_link_info *info,
10989 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10990 asection *stub_sec;
10992 int stub_sec_count = 0;
10997 htab->emit_stub_syms = emit_stub_syms;
10999 /* Allocate memory to hold the linker stubs. */
11000 for (stub_sec = htab->stub_bfd->sections;
11002 stub_sec = stub_sec->next)
11003 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11004 && stub_sec->size != 0)
11006 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11007 if (stub_sec->contents == NULL)
11009 /* We want to check that built size is the same as calculated
11010 size. rawsize is a convenient location to use. */
11011 stub_sec->rawsize = stub_sec->size;
11012 stub_sec->size = 0;
11015 if (htab->glink != NULL && htab->glink->size != 0)
11020 /* Build the .glink plt call stub. */
11021 if (htab->emit_stub_syms)
11023 struct elf_link_hash_entry *h;
11024 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11025 TRUE, FALSE, FALSE);
11028 if (h->root.type == bfd_link_hash_new)
11030 h->root.type = bfd_link_hash_defined;
11031 h->root.u.def.section = htab->glink;
11032 h->root.u.def.value = 8;
11033 h->ref_regular = 1;
11034 h->def_regular = 1;
11035 h->ref_regular_nonweak = 1;
11036 h->forced_local = 1;
11040 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11041 if (info->emitrelocations)
11043 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11046 r->r_offset = (htab->glink->output_offset
11047 + htab->glink->output_section->vma);
11048 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11049 r->r_addend = plt0;
11051 p = htab->glink->contents;
11052 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11053 bfd_put_64 (htab->glink->owner, plt0, p);
11055 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11057 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11059 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11061 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11063 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11065 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11067 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11069 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11071 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11073 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11075 bfd_put_32 (htab->glink->owner, BCTR, p);
11077 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11079 bfd_put_32 (htab->glink->owner, NOP, p);
11083 /* Build the .glink lazy link call stubs. */
11085 while (p < htab->glink->contents + htab->glink->size)
11089 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11094 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11096 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11099 bfd_put_32 (htab->glink->owner,
11100 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11104 htab->glink->rawsize = p - htab->glink->contents;
11107 if (htab->brlt->size != 0)
11109 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11111 if (htab->brlt->contents == NULL)
11114 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11116 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11117 htab->relbrlt->size);
11118 if (htab->relbrlt->contents == NULL)
11122 /* Build the stubs as directed by the stub hash table. */
11123 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
11125 if (htab->relbrlt != NULL)
11126 htab->relbrlt->reloc_count = 0;
11128 for (stub_sec = htab->stub_bfd->sections;
11130 stub_sec = stub_sec->next)
11131 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11133 stub_sec_count += 1;
11134 if (stub_sec->rawsize != stub_sec->size)
11138 if (stub_sec != NULL
11139 || htab->glink->rawsize != htab->glink->size)
11141 htab->stub_error = TRUE;
11142 (*_bfd_error_handler) (_("stubs don't match calculated size"));
11145 if (htab->stub_error)
11150 *stats = bfd_malloc (500);
11151 if (*stats == NULL)
11154 sprintf (*stats, _("linker stubs in %u group%s\n"
11156 " toc adjust %lu\n"
11157 " long branch %lu\n"
11158 " long toc adj %lu\n"
11161 stub_sec_count == 1 ? "" : "s",
11162 htab->stub_count[ppc_stub_long_branch - 1],
11163 htab->stub_count[ppc_stub_long_branch_r2off - 1],
11164 htab->stub_count[ppc_stub_plt_branch - 1],
11165 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
11166 htab->stub_count[ppc_stub_plt_call - 1]);
11171 /* This function undoes the changes made by add_symbol_adjust. */
11174 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11176 struct ppc_link_hash_entry *eh;
11178 if (h->root.type == bfd_link_hash_indirect)
11181 if (h->root.type == bfd_link_hash_warning)
11182 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11184 eh = (struct ppc_link_hash_entry *) h;
11185 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
11188 eh->elf.root.type = bfd_link_hash_undefined;
11193 ppc64_elf_restore_symbols (struct bfd_link_info *info)
11195 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11198 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
11201 /* What to do when ld finds relocations against symbols defined in
11202 discarded sections. */
11204 static unsigned int
11205 ppc64_elf_action_discarded (asection *sec)
11207 if (strcmp (".opd", sec->name) == 0)
11210 if (strcmp (".toc", sec->name) == 0)
11213 if (strcmp (".toc1", sec->name) == 0)
11216 return _bfd_elf_default_action_discarded (sec);
11219 /* REL points to a low-part reloc on a bigtoc instruction sequence.
11220 Find the matching high-part reloc instruction and verify that it
11221 is addis REG,r2,x. If so, return a pointer to the high-part reloc. */
11223 static const Elf_Internal_Rela *
11224 ha_reloc_match (const Elf_Internal_Rela *relocs,
11225 const Elf_Internal_Rela *rel,
11227 const bfd *input_bfd,
11228 const bfd_byte *contents)
11230 enum elf_ppc64_reloc_type r_type, r_type_ha;
11231 bfd_vma r_info_ha, r_addend;
11233 r_type = ELF64_R_TYPE (rel->r_info);
11236 case R_PPC64_GOT_TLSLD16_LO:
11237 case R_PPC64_GOT_TLSGD16_LO:
11238 case R_PPC64_GOT_TPREL16_LO_DS:
11239 case R_PPC64_GOT_DTPREL16_LO_DS:
11240 case R_PPC64_GOT16_LO:
11241 case R_PPC64_TOC16_LO:
11242 r_type_ha = r_type + 2;
11244 case R_PPC64_GOT16_LO_DS:
11245 r_type_ha = R_PPC64_GOT16_HA;
11247 case R_PPC64_TOC16_LO_DS:
11248 r_type_ha = R_PPC64_TOC16_HA;
11253 r_info_ha = ELF64_R_INFO (ELF64_R_SYM (rel->r_info), r_type_ha);
11254 r_addend = rel->r_addend;
11256 while (--rel >= relocs)
11257 if (rel->r_info == r_info_ha
11258 && rel->r_addend == r_addend)
11260 const bfd_byte *p = contents + (rel->r_offset & ~3);
11261 unsigned int insn = bfd_get_32 (input_bfd, p);
11262 if ((insn & ((0x3f << 26) | (0x1f << 16)))
11263 == ((15u << 26) | (2 << 16)) /* addis rt,r2,x */
11264 && (insn & (0x1f << 21)) == (reg << 21))
11271 /* The RELOCATE_SECTION function is called by the ELF backend linker
11272 to handle the relocations for a section.
11274 The relocs are always passed as Rela structures; if the section
11275 actually uses Rel structures, the r_addend field will always be
11278 This function is responsible for adjust the section contents as
11279 necessary, and (if using Rela relocs and generating a
11280 relocatable output file) adjusting the reloc addend as
11283 This function does not have to worry about setting the reloc
11284 address or the reloc symbol index.
11286 LOCAL_SYMS is a pointer to the swapped in local symbols.
11288 LOCAL_SECTIONS is an array giving the section in the input file
11289 corresponding to the st_shndx field of each local symbol.
11291 The global hash table entry for the global symbols can be found
11292 via elf_sym_hashes (input_bfd).
11294 When generating relocatable output, this function must handle
11295 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11296 going to be the section symbol corresponding to the output
11297 section, which means that the addend must be adjusted
11301 ppc64_elf_relocate_section (bfd *output_bfd,
11302 struct bfd_link_info *info,
11304 asection *input_section,
11305 bfd_byte *contents,
11306 Elf_Internal_Rela *relocs,
11307 Elf_Internal_Sym *local_syms,
11308 asection **local_sections)
11310 struct ppc_link_hash_table *htab;
11311 Elf_Internal_Shdr *symtab_hdr;
11312 struct elf_link_hash_entry **sym_hashes;
11313 Elf_Internal_Rela *rel;
11314 Elf_Internal_Rela *relend;
11315 Elf_Internal_Rela outrel;
11317 struct got_entry **local_got_ents;
11319 bfd_boolean ret = TRUE;
11320 bfd_boolean is_opd;
11321 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11322 bfd_boolean is_power4 = FALSE;
11323 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
11325 /* Initialize howto table if needed. */
11326 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
11329 htab = ppc_hash_table (info);
11333 /* Don't relocate stub sections. */
11334 if (input_section->owner == htab->stub_bfd)
11337 BFD_ASSERT (is_ppc64_elf (input_bfd));
11339 local_got_ents = elf_local_got_ents (input_bfd);
11340 TOCstart = elf_gp (output_bfd);
11341 symtab_hdr = &elf_symtab_hdr (input_bfd);
11342 sym_hashes = elf_sym_hashes (input_bfd);
11343 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
11346 relend = relocs + input_section->reloc_count;
11347 for (; rel < relend; rel++)
11349 enum elf_ppc64_reloc_type r_type;
11350 bfd_vma addend, orig_addend;
11351 bfd_reloc_status_type r;
11352 Elf_Internal_Sym *sym;
11354 struct elf_link_hash_entry *h_elf;
11355 struct ppc_link_hash_entry *h;
11356 struct ppc_link_hash_entry *fdh;
11357 const char *sym_name;
11358 unsigned long r_symndx, toc_symndx;
11359 bfd_vma toc_addend;
11360 unsigned char tls_mask, tls_gd, tls_type;
11361 unsigned char sym_type;
11362 bfd_vma relocation;
11363 bfd_boolean unresolved_reloc;
11364 bfd_boolean warned;
11367 struct ppc_stub_hash_entry *stub_entry;
11368 bfd_vma max_br_offset;
11371 r_type = ELF64_R_TYPE (rel->r_info);
11372 r_symndx = ELF64_R_SYM (rel->r_info);
11374 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11375 symbol of the previous ADDR64 reloc. The symbol gives us the
11376 proper TOC base to use. */
11377 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
11379 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
11381 r_symndx = ELF64_R_SYM (rel[-1].r_info);
11387 unresolved_reloc = FALSE;
11389 orig_addend = rel->r_addend;
11391 if (r_symndx < symtab_hdr->sh_info)
11393 /* It's a local symbol. */
11394 struct _opd_sec_data *opd;
11396 sym = local_syms + r_symndx;
11397 sec = local_sections[r_symndx];
11398 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
11399 sym_type = ELF64_ST_TYPE (sym->st_info);
11400 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
11401 opd = get_opd_info (sec);
11402 if (opd != NULL && opd->adjust != NULL)
11404 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
11409 /* If this is a relocation against the opd section sym
11410 and we have edited .opd, adjust the reloc addend so
11411 that ld -r and ld --emit-relocs output is correct.
11412 If it is a reloc against some other .opd symbol,
11413 then the symbol value will be adjusted later. */
11414 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
11415 rel->r_addend += adjust;
11417 relocation += adjust;
11423 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
11424 r_symndx, symtab_hdr, sym_hashes,
11425 h_elf, sec, relocation,
11426 unresolved_reloc, warned);
11427 sym_name = h_elf->root.root.string;
11428 sym_type = h_elf->type;
11430 h = (struct ppc_link_hash_entry *) h_elf;
11432 if (sec != NULL && elf_discarded_section (sec))
11434 /* For relocs against symbols from removed linkonce sections,
11435 or sections discarded by a linker script, we just want the
11436 section contents zeroed. Avoid any special processing. */
11437 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
11438 contents + rel->r_offset);
11444 if (info->relocatable)
11447 /* TLS optimizations. Replace instruction sequences and relocs
11448 based on information we collected in tls_optimize. We edit
11449 RELOCS so that --emit-relocs will output something sensible
11450 for the final instruction stream. */
11455 tls_mask = h->tls_mask;
11456 else if (local_got_ents != NULL)
11458 struct plt_entry **local_plt = (struct plt_entry **)
11459 (local_got_ents + symtab_hdr->sh_info);
11460 unsigned char *lgot_masks = (unsigned char *)
11461 (local_plt + symtab_hdr->sh_info);
11462 tls_mask = lgot_masks[r_symndx];
11465 && (r_type == R_PPC64_TLS
11466 || r_type == R_PPC64_TLSGD
11467 || r_type == R_PPC64_TLSLD))
11469 /* Check for toc tls entries. */
11470 unsigned char *toc_tls;
11472 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11473 &local_syms, rel, input_bfd))
11477 tls_mask = *toc_tls;
11480 /* Check that tls relocs are used with tls syms, and non-tls
11481 relocs are used with non-tls syms. */
11483 && r_type != R_PPC64_NONE
11485 || h->elf.root.type == bfd_link_hash_defined
11486 || h->elf.root.type == bfd_link_hash_defweak)
11487 && (IS_PPC64_TLS_RELOC (r_type)
11488 != (sym_type == STT_TLS
11489 || (sym_type == STT_SECTION
11490 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
11493 && (r_type == R_PPC64_TLS
11494 || r_type == R_PPC64_TLSGD
11495 || r_type == R_PPC64_TLSLD))
11496 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11499 (*_bfd_error_handler)
11500 (!IS_PPC64_TLS_RELOC (r_type)
11501 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11502 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11505 (long) rel->r_offset,
11506 ppc64_elf_howto_table[r_type]->name,
11510 /* Ensure reloc mapping code below stays sane. */
11511 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
11512 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
11513 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
11514 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
11515 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
11516 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
11517 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
11518 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
11519 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
11520 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
11528 case R_PPC64_TOC16:
11529 case R_PPC64_TOC16_LO:
11530 case R_PPC64_TOC16_DS:
11531 case R_PPC64_TOC16_LO_DS:
11533 /* Check for toc tls entries. */
11534 unsigned char *toc_tls;
11537 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11538 &local_syms, rel, input_bfd);
11544 tls_mask = *toc_tls;
11545 if (r_type == R_PPC64_TOC16_DS
11546 || r_type == R_PPC64_TOC16_LO_DS)
11549 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
11554 /* If we found a GD reloc pair, then we might be
11555 doing a GD->IE transition. */
11558 tls_gd = TLS_TPRELGD;
11559 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11562 else if (retval == 3)
11564 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11572 case R_PPC64_GOT_TPREL16_DS:
11573 case R_PPC64_GOT_TPREL16_LO_DS:
11575 && (tls_mask & TLS_TPREL) == 0)
11578 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11580 insn |= 0x3c0d0000; /* addis 0,13,0 */
11581 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11582 r_type = R_PPC64_TPREL16_HA;
11583 if (toc_symndx != 0)
11585 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11586 rel->r_addend = toc_addend;
11587 /* We changed the symbol. Start over in order to
11588 get h, sym, sec etc. right. */
11593 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11599 && (tls_mask & TLS_TPREL) == 0)
11601 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
11602 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
11605 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11606 /* Was PPC64_TLS which sits on insn boundary, now
11607 PPC64_TPREL16_LO which is at low-order half-word. */
11608 rel->r_offset += d_offset;
11609 r_type = R_PPC64_TPREL16_LO;
11610 if (toc_symndx != 0)
11612 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11613 rel->r_addend = toc_addend;
11614 /* We changed the symbol. Start over in order to
11615 get h, sym, sec etc. right. */
11620 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11624 case R_PPC64_GOT_TLSGD16_HI:
11625 case R_PPC64_GOT_TLSGD16_HA:
11626 tls_gd = TLS_TPRELGD;
11627 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11631 case R_PPC64_GOT_TLSLD16_HI:
11632 case R_PPC64_GOT_TLSLD16_HA:
11633 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11636 if ((tls_mask & tls_gd) != 0)
11637 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11638 + R_PPC64_GOT_TPREL16_DS);
11641 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11642 rel->r_offset -= d_offset;
11643 r_type = R_PPC64_NONE;
11645 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11649 case R_PPC64_GOT_TLSGD16:
11650 case R_PPC64_GOT_TLSGD16_LO:
11651 tls_gd = TLS_TPRELGD;
11652 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11656 case R_PPC64_GOT_TLSLD16:
11657 case R_PPC64_GOT_TLSLD16_LO:
11658 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11660 unsigned int insn1, insn2, insn3;
11664 offset = (bfd_vma) -1;
11665 /* If not using the newer R_PPC64_TLSGD/LD to mark
11666 __tls_get_addr calls, we must trust that the call
11667 stays with its arg setup insns, ie. that the next
11668 reloc is the __tls_get_addr call associated with
11669 the current reloc. Edit both insns. */
11670 if (input_section->has_tls_get_addr_call
11671 && rel + 1 < relend
11672 && branch_reloc_hash_match (input_bfd, rel + 1,
11673 htab->tls_get_addr,
11674 htab->tls_get_addr_fd))
11675 offset = rel[1].r_offset;
11676 if ((tls_mask & tls_gd) != 0)
11679 insn1 = bfd_get_32 (output_bfd,
11680 contents + rel->r_offset - d_offset);
11681 insn1 &= (1 << 26) - (1 << 2);
11682 insn1 |= 58 << 26; /* ld */
11683 insn2 = 0x7c636a14; /* add 3,3,13 */
11684 if (offset != (bfd_vma) -1)
11685 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11686 if ((tls_mask & TLS_EXPLICIT) == 0)
11687 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11688 + R_PPC64_GOT_TPREL16_DS);
11690 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
11691 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11696 insn1 = 0x3c6d0000; /* addis 3,13,0 */
11697 insn2 = 0x38630000; /* addi 3,3,0 */
11700 /* Was an LD reloc. */
11702 sec = local_sections[toc_symndx];
11704 r_symndx < symtab_hdr->sh_info;
11706 if (local_sections[r_symndx] == sec)
11708 if (r_symndx >= symtab_hdr->sh_info)
11710 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11712 rel->r_addend -= (local_syms[r_symndx].st_value
11713 + sec->output_offset
11714 + sec->output_section->vma);
11716 else if (toc_symndx != 0)
11718 r_symndx = toc_symndx;
11719 rel->r_addend = toc_addend;
11721 r_type = R_PPC64_TPREL16_HA;
11722 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11723 if (offset != (bfd_vma) -1)
11725 rel[1].r_info = ELF64_R_INFO (r_symndx,
11726 R_PPC64_TPREL16_LO);
11727 rel[1].r_offset = offset + d_offset;
11728 rel[1].r_addend = rel->r_addend;
11731 bfd_put_32 (output_bfd, insn1,
11732 contents + rel->r_offset - d_offset);
11733 if (offset != (bfd_vma) -1)
11735 insn3 = bfd_get_32 (output_bfd,
11736 contents + offset + 4);
11738 || insn3 == CROR_151515 || insn3 == CROR_313131)
11740 rel[1].r_offset += 4;
11741 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11744 bfd_put_32 (output_bfd, insn2, contents + offset);
11746 if ((tls_mask & tls_gd) == 0
11747 && (tls_gd == 0 || toc_symndx != 0))
11749 /* We changed the symbol. Start over in order
11750 to get h, sym, sec etc. right. */
11757 case R_PPC64_TLSGD:
11758 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11760 unsigned int insn2, insn3;
11761 bfd_vma offset = rel->r_offset;
11763 if ((tls_mask & TLS_TPRELGD) != 0)
11766 r_type = R_PPC64_NONE;
11767 insn2 = 0x7c636a14; /* add 3,3,13 */
11772 if (toc_symndx != 0)
11774 r_symndx = toc_symndx;
11775 rel->r_addend = toc_addend;
11777 r_type = R_PPC64_TPREL16_LO;
11778 rel->r_offset = offset + d_offset;
11779 insn2 = 0x38630000; /* addi 3,3,0 */
11781 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11782 /* Zap the reloc on the _tls_get_addr call too. */
11783 BFD_ASSERT (offset == rel[1].r_offset);
11784 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11785 insn3 = bfd_get_32 (output_bfd,
11786 contents + offset + 4);
11788 || insn3 == CROR_151515 || insn3 == CROR_313131)
11790 rel->r_offset += 4;
11791 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11794 bfd_put_32 (output_bfd, insn2, contents + offset);
11795 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
11803 case R_PPC64_TLSLD:
11804 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11806 unsigned int insn2, insn3;
11807 bfd_vma offset = rel->r_offset;
11810 sec = local_sections[toc_symndx];
11812 r_symndx < symtab_hdr->sh_info;
11814 if (local_sections[r_symndx] == sec)
11816 if (r_symndx >= symtab_hdr->sh_info)
11818 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11820 rel->r_addend -= (local_syms[r_symndx].st_value
11821 + sec->output_offset
11822 + sec->output_section->vma);
11824 r_type = R_PPC64_TPREL16_LO;
11825 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11826 rel->r_offset = offset + d_offset;
11827 /* Zap the reloc on the _tls_get_addr call too. */
11828 BFD_ASSERT (offset == rel[1].r_offset);
11829 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11830 insn2 = 0x38630000; /* addi 3,3,0 */
11831 insn3 = bfd_get_32 (output_bfd,
11832 contents + offset + 4);
11834 || insn3 == CROR_151515 || insn3 == CROR_313131)
11836 rel->r_offset += 4;
11837 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11840 bfd_put_32 (output_bfd, insn2, contents + offset);
11846 case R_PPC64_DTPMOD64:
11847 if (rel + 1 < relend
11848 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
11849 && rel[1].r_offset == rel->r_offset + 8)
11851 if ((tls_mask & TLS_GD) == 0)
11853 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
11854 if ((tls_mask & TLS_TPRELGD) != 0)
11855 r_type = R_PPC64_TPREL64;
11858 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
11859 r_type = R_PPC64_NONE;
11861 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11866 if ((tls_mask & TLS_LD) == 0)
11868 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
11869 r_type = R_PPC64_NONE;
11870 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11875 case R_PPC64_TPREL64:
11876 if ((tls_mask & TLS_TPREL) == 0)
11878 r_type = R_PPC64_NONE;
11879 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11884 /* Handle other relocations that tweak non-addend part of insn. */
11886 max_br_offset = 1 << 25;
11887 addend = rel->r_addend;
11893 /* Branch taken prediction relocations. */
11894 case R_PPC64_ADDR14_BRTAKEN:
11895 case R_PPC64_REL14_BRTAKEN:
11896 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
11899 /* Branch not taken prediction relocations. */
11900 case R_PPC64_ADDR14_BRNTAKEN:
11901 case R_PPC64_REL14_BRNTAKEN:
11902 insn |= bfd_get_32 (output_bfd,
11903 contents + rel->r_offset) & ~(0x01 << 21);
11906 case R_PPC64_REL14:
11907 max_br_offset = 1 << 15;
11910 case R_PPC64_REL24:
11911 /* Calls to functions with a different TOC, such as calls to
11912 shared objects, need to alter the TOC pointer. This is
11913 done using a linkage stub. A REL24 branching to these
11914 linkage stubs needs to be followed by a nop, as the nop
11915 will be replaced with an instruction to restore the TOC
11921 && h->oh->is_func_descriptor)
11922 fdh = ppc_follow_link (h->oh);
11924 && fdh->elf.plt.plist != NULL)
11926 && sec->output_section != NULL
11927 && sec->id <= htab->top_id
11928 && (htab->stub_group[sec->id].toc_off
11929 != htab->stub_group[input_section->id].toc_off))
11931 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
11932 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
11933 rel, htab)) != NULL
11934 && (stub_entry->stub_type == ppc_stub_plt_call
11935 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
11936 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
11938 bfd_boolean can_plt_call = FALSE;
11940 if (rel->r_offset + 8 <= input_section->size)
11943 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
11945 || nop == CROR_151515 || nop == CROR_313131)
11948 && (h == htab->tls_get_addr_fd
11949 || h == htab->tls_get_addr)
11950 && !htab->no_tls_get_addr_opt)
11952 /* Special stub used, leave nop alone. */
11955 bfd_put_32 (input_bfd, LD_R2_40R1,
11956 contents + rel->r_offset + 4);
11957 can_plt_call = TRUE;
11963 if (stub_entry->stub_type == ppc_stub_plt_call)
11965 /* If this is a plain branch rather than a branch
11966 and link, don't require a nop. However, don't
11967 allow tail calls in a shared library as they
11968 will result in r2 being corrupted. */
11970 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
11971 if (info->executable && (br & 1) == 0)
11972 can_plt_call = TRUE;
11977 && strcmp (h->elf.root.root.string,
11978 ".__libc_start_main") == 0)
11980 /* Allow crt1 branch to go via a toc adjusting stub. */
11981 can_plt_call = TRUE;
11985 if (strcmp (input_section->output_section->name,
11987 || strcmp (input_section->output_section->name,
11989 (*_bfd_error_handler)
11990 (_("%B(%A+0x%lx): automatic multiple TOCs "
11991 "not supported using your crt files; "
11992 "recompile with -mminimal-toc or upgrade gcc"),
11995 (long) rel->r_offset);
11997 (*_bfd_error_handler)
11998 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
11999 "does not allow automatic multiple TOCs; "
12000 "recompile with -mminimal-toc or "
12001 "-fno-optimize-sibling-calls, "
12002 "or make `%s' extern"),
12005 (long) rel->r_offset,
12008 bfd_set_error (bfd_error_bad_value);
12014 && stub_entry->stub_type == ppc_stub_plt_call)
12015 unresolved_reloc = FALSE;
12018 if (stub_entry == NULL
12019 && get_opd_info (sec) != NULL)
12021 /* The branch destination is the value of the opd entry. */
12022 bfd_vma off = (relocation + addend
12023 - sec->output_section->vma
12024 - sec->output_offset);
12025 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
12026 if (dest != (bfd_vma) -1)
12033 /* If the branch is out of reach we ought to have a long
12035 from = (rel->r_offset
12036 + input_section->output_offset
12037 + input_section->output_section->vma);
12039 if (stub_entry == NULL
12040 && (relocation + addend - from + max_br_offset
12041 >= 2 * max_br_offset)
12042 && r_type != R_PPC64_ADDR14_BRTAKEN
12043 && r_type != R_PPC64_ADDR14_BRNTAKEN)
12044 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel,
12047 if (stub_entry != NULL)
12049 /* Munge up the value and addend so that we call the stub
12050 rather than the procedure directly. */
12051 relocation = (stub_entry->stub_offset
12052 + stub_entry->stub_sec->output_offset
12053 + stub_entry->stub_sec->output_section->vma);
12061 /* Set 'a' bit. This is 0b00010 in BO field for branch
12062 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12063 for branch on CTR insns (BO == 1a00t or 1a01t). */
12064 if ((insn & (0x14 << 21)) == (0x04 << 21))
12065 insn |= 0x02 << 21;
12066 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12067 insn |= 0x08 << 21;
12073 /* Invert 'y' bit if not the default. */
12074 if ((bfd_signed_vma) (relocation + addend - from) < 0)
12075 insn ^= 0x01 << 21;
12078 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12081 /* NOP out calls to undefined weak functions.
12082 We can thus call a weak function without first
12083 checking whether the function is defined. */
12085 && h->elf.root.type == bfd_link_hash_undefweak
12086 && h->elf.dynindx == -1
12087 && r_type == R_PPC64_REL24
12091 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12097 /* Set `addend'. */
12102 (*_bfd_error_handler)
12103 (_("%B: unknown relocation type %d for symbol %s"),
12104 input_bfd, (int) r_type, sym_name);
12106 bfd_set_error (bfd_error_bad_value);
12112 case R_PPC64_TLSGD:
12113 case R_PPC64_TLSLD:
12114 case R_PPC64_GNU_VTINHERIT:
12115 case R_PPC64_GNU_VTENTRY:
12118 /* GOT16 relocations. Like an ADDR16 using the symbol's
12119 address in the GOT as relocation value instead of the
12120 symbol's value itself. Also, create a GOT entry for the
12121 symbol and put the symbol value there. */
12122 case R_PPC64_GOT_TLSGD16:
12123 case R_PPC64_GOT_TLSGD16_LO:
12124 case R_PPC64_GOT_TLSGD16_HI:
12125 case R_PPC64_GOT_TLSGD16_HA:
12126 tls_type = TLS_TLS | TLS_GD;
12129 case R_PPC64_GOT_TLSLD16:
12130 case R_PPC64_GOT_TLSLD16_LO:
12131 case R_PPC64_GOT_TLSLD16_HI:
12132 case R_PPC64_GOT_TLSLD16_HA:
12133 tls_type = TLS_TLS | TLS_LD;
12136 case R_PPC64_GOT_TPREL16_DS:
12137 case R_PPC64_GOT_TPREL16_LO_DS:
12138 case R_PPC64_GOT_TPREL16_HI:
12139 case R_PPC64_GOT_TPREL16_HA:
12140 tls_type = TLS_TLS | TLS_TPREL;
12143 case R_PPC64_GOT_DTPREL16_DS:
12144 case R_PPC64_GOT_DTPREL16_LO_DS:
12145 case R_PPC64_GOT_DTPREL16_HI:
12146 case R_PPC64_GOT_DTPREL16_HA:
12147 tls_type = TLS_TLS | TLS_DTPREL;
12150 case R_PPC64_GOT16:
12151 case R_PPC64_GOT16_LO:
12152 case R_PPC64_GOT16_HI:
12153 case R_PPC64_GOT16_HA:
12154 case R_PPC64_GOT16_DS:
12155 case R_PPC64_GOT16_LO_DS:
12158 /* Relocation is to the entry for this symbol in the global
12163 unsigned long indx = 0;
12164 struct got_entry *ent;
12166 if (tls_type == (TLS_TLS | TLS_LD)
12168 || !h->elf.def_dynamic))
12169 ent = ppc64_tlsld_got (input_bfd);
12175 bfd_boolean dyn = htab->elf.dynamic_sections_created;
12176 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
12179 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
12180 /* This is actually a static link, or it is a
12181 -Bsymbolic link and the symbol is defined
12182 locally, or the symbol was forced to be local
12183 because of a version file. */
12187 indx = h->elf.dynindx;
12188 unresolved_reloc = FALSE;
12190 ent = h->elf.got.glist;
12194 if (local_got_ents == NULL)
12196 ent = local_got_ents[r_symndx];
12199 for (; ent != NULL; ent = ent->next)
12200 if (ent->addend == orig_addend
12201 && ent->owner == input_bfd
12202 && ent->tls_type == tls_type)
12208 if (ent->is_indirect)
12209 ent = ent->got.ent;
12210 offp = &ent->got.offset;
12211 got = ppc64_elf_tdata (ent->owner)->got;
12215 /* The offset must always be a multiple of 8. We use the
12216 least significant bit to record whether we have already
12217 processed this entry. */
12219 if ((off & 1) != 0)
12223 /* Generate relocs for the dynamic linker, except in
12224 the case of TLSLD where we'll use one entry per
12232 ? h->elf.type == STT_GNU_IFUNC
12233 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
12234 if ((info->shared || indx != 0)
12236 || (tls_type == (TLS_TLS | TLS_LD)
12237 && !h->elf.def_dynamic)
12238 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12239 || h->elf.root.type != bfd_link_hash_undefweak))
12240 relgot = ppc64_elf_tdata (ent->owner)->relgot;
12242 relgot = htab->reliplt;
12243 if (relgot != NULL)
12245 outrel.r_offset = (got->output_section->vma
12246 + got->output_offset
12248 outrel.r_addend = addend;
12249 if (tls_type & (TLS_LD | TLS_GD))
12251 outrel.r_addend = 0;
12252 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
12253 if (tls_type == (TLS_TLS | TLS_GD))
12255 loc = relgot->contents;
12256 loc += (relgot->reloc_count++
12257 * sizeof (Elf64_External_Rela));
12258 bfd_elf64_swap_reloca_out (output_bfd,
12260 outrel.r_offset += 8;
12261 outrel.r_addend = addend;
12263 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12266 else if (tls_type == (TLS_TLS | TLS_DTPREL))
12267 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12268 else if (tls_type == (TLS_TLS | TLS_TPREL))
12269 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
12270 else if (indx != 0)
12271 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
12275 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12277 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12279 /* Write the .got section contents for the sake
12281 loc = got->contents + off;
12282 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
12286 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
12288 outrel.r_addend += relocation;
12289 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
12290 outrel.r_addend -= htab->elf.tls_sec->vma;
12292 loc = relgot->contents;
12293 loc += (relgot->reloc_count++
12294 * sizeof (Elf64_External_Rela));
12295 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12298 /* Init the .got section contents here if we're not
12299 emitting a reloc. */
12302 relocation += addend;
12303 if (tls_type == (TLS_TLS | TLS_LD))
12305 else if (tls_type != 0)
12307 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
12308 if (tls_type == (TLS_TLS | TLS_TPREL))
12309 relocation += DTP_OFFSET - TP_OFFSET;
12311 if (tls_type == (TLS_TLS | TLS_GD))
12313 bfd_put_64 (output_bfd, relocation,
12314 got->contents + off + 8);
12319 bfd_put_64 (output_bfd, relocation,
12320 got->contents + off);
12324 if (off >= (bfd_vma) -2)
12327 relocation = got->output_section->vma + got->output_offset + off;
12328 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
12332 case R_PPC64_PLT16_HA:
12333 case R_PPC64_PLT16_HI:
12334 case R_PPC64_PLT16_LO:
12335 case R_PPC64_PLT32:
12336 case R_PPC64_PLT64:
12337 /* Relocation is to the entry for this symbol in the
12338 procedure linkage table. */
12340 /* Resolve a PLT reloc against a local symbol directly,
12341 without using the procedure linkage table. */
12345 /* It's possible that we didn't make a PLT entry for this
12346 symbol. This happens when statically linking PIC code,
12347 or when using -Bsymbolic. Go find a match if there is a
12349 if (htab->plt != NULL)
12351 struct plt_entry *ent;
12352 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
12353 if (ent->addend == orig_addend
12354 && ent->plt.offset != (bfd_vma) -1)
12356 relocation = (htab->plt->output_section->vma
12357 + htab->plt->output_offset
12358 + ent->plt.offset);
12359 unresolved_reloc = FALSE;
12365 /* Relocation value is TOC base. */
12366 relocation = TOCstart;
12368 relocation += htab->stub_group[input_section->id].toc_off;
12369 else if (unresolved_reloc)
12371 else if (sec != NULL && sec->id <= htab->top_id)
12372 relocation += htab->stub_group[sec->id].toc_off;
12374 unresolved_reloc = TRUE;
12377 /* TOC16 relocs. We want the offset relative to the TOC base,
12378 which is the address of the start of the TOC plus 0x8000.
12379 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12381 case R_PPC64_TOC16:
12382 case R_PPC64_TOC16_LO:
12383 case R_PPC64_TOC16_HI:
12384 case R_PPC64_TOC16_DS:
12385 case R_PPC64_TOC16_LO_DS:
12386 case R_PPC64_TOC16_HA:
12387 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
12390 /* Relocate against the beginning of the section. */
12391 case R_PPC64_SECTOFF:
12392 case R_PPC64_SECTOFF_LO:
12393 case R_PPC64_SECTOFF_HI:
12394 case R_PPC64_SECTOFF_DS:
12395 case R_PPC64_SECTOFF_LO_DS:
12396 case R_PPC64_SECTOFF_HA:
12398 addend -= sec->output_section->vma;
12401 case R_PPC64_REL16:
12402 case R_PPC64_REL16_LO:
12403 case R_PPC64_REL16_HI:
12404 case R_PPC64_REL16_HA:
12407 case R_PPC64_REL14:
12408 case R_PPC64_REL14_BRNTAKEN:
12409 case R_PPC64_REL14_BRTAKEN:
12410 case R_PPC64_REL24:
12413 case R_PPC64_TPREL16:
12414 case R_PPC64_TPREL16_LO:
12415 case R_PPC64_TPREL16_HI:
12416 case R_PPC64_TPREL16_HA:
12417 case R_PPC64_TPREL16_DS:
12418 case R_PPC64_TPREL16_LO_DS:
12419 case R_PPC64_TPREL16_HIGHER:
12420 case R_PPC64_TPREL16_HIGHERA:
12421 case R_PPC64_TPREL16_HIGHEST:
12422 case R_PPC64_TPREL16_HIGHESTA:
12424 && h->elf.root.type == bfd_link_hash_undefweak
12425 && h->elf.dynindx == -1)
12427 /* Make this relocation against an undefined weak symbol
12428 resolve to zero. This is really just a tweak, since
12429 code using weak externs ought to check that they are
12430 defined before using them. */
12431 bfd_byte *p = contents + rel->r_offset - d_offset;
12433 insn = bfd_get_32 (output_bfd, p);
12434 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
12436 bfd_put_32 (output_bfd, insn, p);
12439 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12441 /* The TPREL16 relocs shouldn't really be used in shared
12442 libs as they will result in DT_TEXTREL being set, but
12443 support them anyway. */
12447 case R_PPC64_DTPREL16:
12448 case R_PPC64_DTPREL16_LO:
12449 case R_PPC64_DTPREL16_HI:
12450 case R_PPC64_DTPREL16_HA:
12451 case R_PPC64_DTPREL16_DS:
12452 case R_PPC64_DTPREL16_LO_DS:
12453 case R_PPC64_DTPREL16_HIGHER:
12454 case R_PPC64_DTPREL16_HIGHERA:
12455 case R_PPC64_DTPREL16_HIGHEST:
12456 case R_PPC64_DTPREL16_HIGHESTA:
12457 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12460 case R_PPC64_DTPMOD64:
12465 case R_PPC64_TPREL64:
12466 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12469 case R_PPC64_DTPREL64:
12470 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12473 /* Relocations that may need to be propagated if this is a
12475 case R_PPC64_REL30:
12476 case R_PPC64_REL32:
12477 case R_PPC64_REL64:
12478 case R_PPC64_ADDR14:
12479 case R_PPC64_ADDR14_BRNTAKEN:
12480 case R_PPC64_ADDR14_BRTAKEN:
12481 case R_PPC64_ADDR16:
12482 case R_PPC64_ADDR16_DS:
12483 case R_PPC64_ADDR16_HA:
12484 case R_PPC64_ADDR16_HI:
12485 case R_PPC64_ADDR16_HIGHER:
12486 case R_PPC64_ADDR16_HIGHERA:
12487 case R_PPC64_ADDR16_HIGHEST:
12488 case R_PPC64_ADDR16_HIGHESTA:
12489 case R_PPC64_ADDR16_LO:
12490 case R_PPC64_ADDR16_LO_DS:
12491 case R_PPC64_ADDR24:
12492 case R_PPC64_ADDR32:
12493 case R_PPC64_ADDR64:
12494 case R_PPC64_UADDR16:
12495 case R_PPC64_UADDR32:
12496 case R_PPC64_UADDR64:
12498 if ((input_section->flags & SEC_ALLOC) == 0)
12501 if (NO_OPD_RELOCS && is_opd)
12506 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12507 || h->elf.root.type != bfd_link_hash_undefweak)
12508 && (must_be_dyn_reloc (info, r_type)
12509 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
12510 || (ELIMINATE_COPY_RELOCS
12513 && h->elf.dynindx != -1
12514 && !h->elf.non_got_ref
12515 && !h->elf.def_regular)
12518 ? h->elf.type == STT_GNU_IFUNC
12519 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
12521 bfd_boolean skip, relocate;
12525 /* When generating a dynamic object, these relocations
12526 are copied into the output file to be resolved at run
12532 out_off = _bfd_elf_section_offset (output_bfd, info,
12533 input_section, rel->r_offset);
12534 if (out_off == (bfd_vma) -1)
12536 else if (out_off == (bfd_vma) -2)
12537 skip = TRUE, relocate = TRUE;
12538 out_off += (input_section->output_section->vma
12539 + input_section->output_offset);
12540 outrel.r_offset = out_off;
12541 outrel.r_addend = rel->r_addend;
12543 /* Optimize unaligned reloc use. */
12544 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
12545 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
12546 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
12547 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
12548 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
12549 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
12550 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
12551 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
12552 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
12555 memset (&outrel, 0, sizeof outrel);
12556 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
12558 && r_type != R_PPC64_TOC)
12559 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
12562 /* This symbol is local, or marked to become local,
12563 or this is an opd section reloc which must point
12564 at a local function. */
12565 outrel.r_addend += relocation;
12566 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
12568 if (is_opd && h != NULL)
12570 /* Lie about opd entries. This case occurs
12571 when building shared libraries and we
12572 reference a function in another shared
12573 lib. The same thing happens for a weak
12574 definition in an application that's
12575 overridden by a strong definition in a
12576 shared lib. (I believe this is a generic
12577 bug in binutils handling of weak syms.)
12578 In these cases we won't use the opd
12579 entry in this lib. */
12580 unresolved_reloc = FALSE;
12583 && r_type == R_PPC64_ADDR64
12585 ? h->elf.type == STT_GNU_IFUNC
12586 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
12587 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12590 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12592 /* We need to relocate .opd contents for ld.so.
12593 Prelink also wants simple and consistent rules
12594 for relocs. This make all RELATIVE relocs have
12595 *r_offset equal to r_addend. */
12604 ? h->elf.type == STT_GNU_IFUNC
12605 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
12607 (*_bfd_error_handler)
12608 (_("%B(%A+0x%lx): relocation %s for indirect "
12609 "function %s unsupported"),
12612 (long) rel->r_offset,
12613 ppc64_elf_howto_table[r_type]->name,
12617 else if (r_symndx == 0 || bfd_is_abs_section (sec))
12619 else if (sec == NULL || sec->owner == NULL)
12621 bfd_set_error (bfd_error_bad_value);
12628 osec = sec->output_section;
12629 indx = elf_section_data (osec)->dynindx;
12633 if ((osec->flags & SEC_READONLY) == 0
12634 && htab->elf.data_index_section != NULL)
12635 osec = htab->elf.data_index_section;
12637 osec = htab->elf.text_index_section;
12638 indx = elf_section_data (osec)->dynindx;
12640 BFD_ASSERT (indx != 0);
12642 /* We are turning this relocation into one
12643 against a section symbol, so subtract out
12644 the output section's address but not the
12645 offset of the input section in the output
12647 outrel.r_addend -= osec->vma;
12650 outrel.r_info = ELF64_R_INFO (indx, r_type);
12654 sreloc = elf_section_data (input_section)->sreloc;
12655 if (!htab->elf.dynamic_sections_created)
12656 sreloc = htab->reliplt;
12657 if (sreloc == NULL)
12660 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
12663 loc = sreloc->contents;
12664 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
12665 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12667 /* If this reloc is against an external symbol, it will
12668 be computed at runtime, so there's no need to do
12669 anything now. However, for the sake of prelink ensure
12670 that the section contents are a known value. */
12673 unresolved_reloc = FALSE;
12674 /* The value chosen here is quite arbitrary as ld.so
12675 ignores section contents except for the special
12676 case of .opd where the contents might be accessed
12677 before relocation. Choose zero, as that won't
12678 cause reloc overflow. */
12681 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12682 to improve backward compatibility with older
12684 if (r_type == R_PPC64_ADDR64)
12685 addend = outrel.r_addend;
12686 /* Adjust pc_relative relocs to have zero in *r_offset. */
12687 else if (ppc64_elf_howto_table[r_type]->pc_relative)
12688 addend = (input_section->output_section->vma
12689 + input_section->output_offset
12696 case R_PPC64_GLOB_DAT:
12697 case R_PPC64_JMP_SLOT:
12698 case R_PPC64_JMP_IREL:
12699 case R_PPC64_RELATIVE:
12700 /* We shouldn't ever see these dynamic relocs in relocatable
12702 /* Fall through. */
12704 case R_PPC64_PLTGOT16:
12705 case R_PPC64_PLTGOT16_DS:
12706 case R_PPC64_PLTGOT16_HA:
12707 case R_PPC64_PLTGOT16_HI:
12708 case R_PPC64_PLTGOT16_LO:
12709 case R_PPC64_PLTGOT16_LO_DS:
12710 case R_PPC64_PLTREL32:
12711 case R_PPC64_PLTREL64:
12712 /* These ones haven't been implemented yet. */
12714 (*_bfd_error_handler)
12715 (_("%B: relocation %s is not supported for symbol %s."),
12717 ppc64_elf_howto_table[r_type]->name, sym_name);
12719 bfd_set_error (bfd_error_invalid_operation);
12724 /* Multi-instruction sequences that access the TOC can be
12725 optimized, eg. addis ra,r2,0; addi rb,ra,x;
12726 to nop; addi rb,r2,x; */
12732 case R_PPC64_GOT_TLSLD16_HI:
12733 case R_PPC64_GOT_TLSGD16_HI:
12734 case R_PPC64_GOT_TPREL16_HI:
12735 case R_PPC64_GOT_DTPREL16_HI:
12736 case R_PPC64_GOT16_HI:
12737 case R_PPC64_TOC16_HI:
12738 /* These relocs would only be useful if building up an
12739 offset to later add to r2, perhaps in an indexed
12740 addressing mode instruction. Don't try to optimize.
12741 Unfortunately, the possibility of someone building up an
12742 offset like this or even with the HA relocs, means that
12743 we need to check the high insn when optimizing the low
12747 case R_PPC64_GOT_TLSLD16_HA:
12748 case R_PPC64_GOT_TLSGD16_HA:
12749 case R_PPC64_GOT_TPREL16_HA:
12750 case R_PPC64_GOT_DTPREL16_HA:
12751 case R_PPC64_GOT16_HA:
12752 case R_PPC64_TOC16_HA:
12753 /* For now we don't nop out the first instruction. */
12756 case R_PPC64_GOT_TLSLD16_LO:
12757 case R_PPC64_GOT_TLSGD16_LO:
12758 case R_PPC64_GOT_TPREL16_LO_DS:
12759 case R_PPC64_GOT_DTPREL16_LO_DS:
12760 case R_PPC64_GOT16_LO:
12761 case R_PPC64_GOT16_LO_DS:
12762 case R_PPC64_TOC16_LO:
12763 case R_PPC64_TOC16_LO_DS:
12764 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000)
12766 bfd_byte *p = contents + (rel->r_offset & ~3);
12767 insn = bfd_get_32 (input_bfd, p);
12768 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
12769 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
12770 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
12771 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
12772 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
12773 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
12774 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
12775 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
12776 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
12777 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
12778 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
12779 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
12780 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
12781 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
12782 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
12783 && (insn & 3) != 1)
12784 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
12785 && ((insn & 3) == 0 || (insn & 3) == 3)))
12787 unsigned int reg = (insn >> 16) & 0x1f;
12788 if (ha_reloc_match (relocs, rel, reg, input_bfd, contents))
12790 insn &= ~(0x1f << 16);
12792 bfd_put_32 (input_bfd, insn, p);
12799 /* Do any further special processing. */
12805 case R_PPC64_ADDR16_HA:
12806 case R_PPC64_REL16_HA:
12807 case R_PPC64_ADDR16_HIGHERA:
12808 case R_PPC64_ADDR16_HIGHESTA:
12809 case R_PPC64_TOC16_HA:
12810 case R_PPC64_SECTOFF_HA:
12811 case R_PPC64_TPREL16_HA:
12812 case R_PPC64_DTPREL16_HA:
12813 case R_PPC64_TPREL16_HIGHER:
12814 case R_PPC64_TPREL16_HIGHERA:
12815 case R_PPC64_TPREL16_HIGHEST:
12816 case R_PPC64_TPREL16_HIGHESTA:
12817 case R_PPC64_DTPREL16_HIGHER:
12818 case R_PPC64_DTPREL16_HIGHERA:
12819 case R_PPC64_DTPREL16_HIGHEST:
12820 case R_PPC64_DTPREL16_HIGHESTA:
12821 /* It's just possible that this symbol is a weak symbol
12822 that's not actually defined anywhere. In that case,
12823 'sec' would be NULL, and we should leave the symbol
12824 alone (it will be set to zero elsewhere in the link). */
12829 case R_PPC64_GOT16_HA:
12830 case R_PPC64_PLTGOT16_HA:
12831 case R_PPC64_PLT16_HA:
12832 case R_PPC64_GOT_TLSGD16_HA:
12833 case R_PPC64_GOT_TLSLD16_HA:
12834 case R_PPC64_GOT_TPREL16_HA:
12835 case R_PPC64_GOT_DTPREL16_HA:
12836 /* Add 0x10000 if sign bit in 0:15 is set.
12837 Bits 0:15 are not used. */
12841 case R_PPC64_ADDR16_DS:
12842 case R_PPC64_ADDR16_LO_DS:
12843 case R_PPC64_GOT16_DS:
12844 case R_PPC64_GOT16_LO_DS:
12845 case R_PPC64_PLT16_LO_DS:
12846 case R_PPC64_SECTOFF_DS:
12847 case R_PPC64_SECTOFF_LO_DS:
12848 case R_PPC64_TOC16_DS:
12849 case R_PPC64_TOC16_LO_DS:
12850 case R_PPC64_PLTGOT16_DS:
12851 case R_PPC64_PLTGOT16_LO_DS:
12852 case R_PPC64_GOT_TPREL16_DS:
12853 case R_PPC64_GOT_TPREL16_LO_DS:
12854 case R_PPC64_GOT_DTPREL16_DS:
12855 case R_PPC64_GOT_DTPREL16_LO_DS:
12856 case R_PPC64_TPREL16_DS:
12857 case R_PPC64_TPREL16_LO_DS:
12858 case R_PPC64_DTPREL16_DS:
12859 case R_PPC64_DTPREL16_LO_DS:
12860 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
12862 /* If this reloc is against an lq insn, then the value must be
12863 a multiple of 16. This is somewhat of a hack, but the
12864 "correct" way to do this by defining _DQ forms of all the
12865 _DS relocs bloats all reloc switches in this file. It
12866 doesn't seem to make much sense to use any of these relocs
12867 in data, so testing the insn should be safe. */
12868 if ((insn & (0x3f << 26)) == (56u << 26))
12870 if (((relocation + addend) & mask) != 0)
12872 (*_bfd_error_handler)
12873 (_("%B: error: relocation %s not a multiple of %d"),
12875 ppc64_elf_howto_table[r_type]->name,
12877 bfd_set_error (bfd_error_bad_value);
12884 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
12885 because such sections are not SEC_ALLOC and thus ld.so will
12886 not process them. */
12887 if (unresolved_reloc
12888 && !((input_section->flags & SEC_DEBUGGING) != 0
12889 && h->elf.def_dynamic))
12891 (*_bfd_error_handler)
12892 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
12895 (long) rel->r_offset,
12896 ppc64_elf_howto_table[(int) r_type]->name,
12897 h->elf.root.root.string);
12901 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
12909 if (r != bfd_reloc_ok)
12911 if (sym_name == NULL)
12912 sym_name = "(null)";
12913 if (r == bfd_reloc_overflow)
12918 && h->elf.root.type == bfd_link_hash_undefweak
12919 && ppc64_elf_howto_table[r_type]->pc_relative)
12921 /* Assume this is a call protected by other code that
12922 detects the symbol is undefined. If this is the case,
12923 we can safely ignore the overflow. If not, the
12924 program is hosed anyway, and a little warning isn't
12930 if (!((*info->callbacks->reloc_overflow)
12931 (info, (h ? &h->elf.root : NULL), sym_name,
12932 ppc64_elf_howto_table[r_type]->name,
12933 orig_addend, input_bfd, input_section, rel->r_offset)))
12938 (*_bfd_error_handler)
12939 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
12942 (long) rel->r_offset,
12943 ppc64_elf_howto_table[r_type]->name,
12951 /* If we're emitting relocations, then shortly after this function
12952 returns, reloc offsets and addends for this section will be
12953 adjusted. Worse, reloc symbol indices will be for the output
12954 file rather than the input. Save a copy of the relocs for
12955 opd_entry_value. */
12956 if (is_opd && (info->emitrelocations || info->relocatable))
12959 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
12960 rel = bfd_alloc (input_bfd, amt);
12961 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
12962 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
12965 memcpy (rel, relocs, amt);
12970 /* Adjust the value of any local symbols in opd sections. */
12973 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
12974 const char *name ATTRIBUTE_UNUSED,
12975 Elf_Internal_Sym *elfsym,
12976 asection *input_sec,
12977 struct elf_link_hash_entry *h)
12979 struct _opd_sec_data *opd;
12986 opd = get_opd_info (input_sec);
12987 if (opd == NULL || opd->adjust == NULL)
12990 value = elfsym->st_value - input_sec->output_offset;
12991 if (!info->relocatable)
12992 value -= input_sec->output_section->vma;
12994 adjust = opd->adjust[value / 8];
12998 elfsym->st_value += adjust;
13002 /* Finish up dynamic symbol handling. We set the contents of various
13003 dynamic sections here. */
13006 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13007 struct bfd_link_info *info,
13008 struct elf_link_hash_entry *h,
13009 Elf_Internal_Sym *sym)
13011 struct ppc_link_hash_table *htab;
13012 struct plt_entry *ent;
13013 Elf_Internal_Rela rela;
13016 htab = ppc_hash_table (info);
13020 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13021 if (ent->plt.offset != (bfd_vma) -1)
13023 /* This symbol has an entry in the procedure linkage
13024 table. Set it up. */
13025 if (!htab->elf.dynamic_sections_created
13026 || h->dynindx == -1)
13028 BFD_ASSERT (h->type == STT_GNU_IFUNC
13030 && (h->root.type == bfd_link_hash_defined
13031 || h->root.type == bfd_link_hash_defweak));
13032 rela.r_offset = (htab->iplt->output_section->vma
13033 + htab->iplt->output_offset
13034 + ent->plt.offset);
13035 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13036 rela.r_addend = (h->root.u.def.value
13037 + h->root.u.def.section->output_offset
13038 + h->root.u.def.section->output_section->vma
13040 loc = (htab->reliplt->contents
13041 + (htab->reliplt->reloc_count++
13042 * sizeof (Elf64_External_Rela)));
13046 rela.r_offset = (htab->plt->output_section->vma
13047 + htab->plt->output_offset
13048 + ent->plt.offset);
13049 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13050 rela.r_addend = ent->addend;
13051 loc = (htab->relplt->contents
13052 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13053 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
13055 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13060 /* This symbol needs a copy reloc. Set it up. */
13062 if (h->dynindx == -1
13063 || (h->root.type != bfd_link_hash_defined
13064 && h->root.type != bfd_link_hash_defweak)
13065 || htab->relbss == NULL)
13068 rela.r_offset = (h->root.u.def.value
13069 + h->root.u.def.section->output_section->vma
13070 + h->root.u.def.section->output_offset);
13071 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13073 loc = htab->relbss->contents;
13074 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
13075 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13078 /* Mark some specially defined symbols as absolute. */
13079 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
13080 sym->st_shndx = SHN_ABS;
13085 /* Used to decide how to sort relocs in an optimal manner for the
13086 dynamic linker, before writing them out. */
13088 static enum elf_reloc_type_class
13089 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
13091 enum elf_ppc64_reloc_type r_type;
13093 r_type = ELF64_R_TYPE (rela->r_info);
13096 case R_PPC64_RELATIVE:
13097 return reloc_class_relative;
13098 case R_PPC64_JMP_SLOT:
13099 return reloc_class_plt;
13101 return reloc_class_copy;
13103 return reloc_class_normal;
13107 /* Finish up the dynamic sections. */
13110 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
13111 struct bfd_link_info *info)
13113 struct ppc_link_hash_table *htab;
13117 htab = ppc_hash_table (info);
13121 dynobj = htab->elf.dynobj;
13122 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
13124 if (htab->elf.dynamic_sections_created)
13126 Elf64_External_Dyn *dyncon, *dynconend;
13128 if (sdyn == NULL || htab->got == NULL)
13131 dyncon = (Elf64_External_Dyn *) sdyn->contents;
13132 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
13133 for (; dyncon < dynconend; dyncon++)
13135 Elf_Internal_Dyn dyn;
13138 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
13145 case DT_PPC64_GLINK:
13147 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13148 /* We stupidly defined DT_PPC64_GLINK to be the start
13149 of glink rather than the first entry point, which is
13150 what ld.so needs, and now have a bigger stub to
13151 support automatic multiple TOCs. */
13152 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
13156 s = bfd_get_section_by_name (output_bfd, ".opd");
13159 dyn.d_un.d_ptr = s->vma;
13162 case DT_PPC64_OPDSZ:
13163 s = bfd_get_section_by_name (output_bfd, ".opd");
13166 dyn.d_un.d_val = s->size;
13171 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13176 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13180 dyn.d_un.d_val = htab->relplt->size;
13184 /* Don't count procedure linkage table relocs in the
13185 overall reloc count. */
13189 dyn.d_un.d_val -= s->size;
13193 /* We may not be using the standard ELF linker script.
13194 If .rela.plt is the first .rela section, we adjust
13195 DT_RELA to not include it. */
13199 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
13201 dyn.d_un.d_ptr += s->size;
13205 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
13209 if (htab->got != NULL && htab->got->size != 0)
13211 /* Fill in the first entry in the global offset table.
13212 We use it to hold the link-time TOCbase. */
13213 bfd_put_64 (output_bfd,
13214 elf_gp (output_bfd) + TOC_BASE_OFF,
13215 htab->got->contents);
13217 /* Set .got entry size. */
13218 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
13221 if (htab->plt != NULL && htab->plt->size != 0)
13223 /* Set .plt entry size. */
13224 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
13228 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13229 brlt ourselves if emitrelocations. */
13230 if (htab->brlt != NULL
13231 && htab->brlt->reloc_count != 0
13232 && !_bfd_elf_link_output_relocs (output_bfd,
13234 &elf_section_data (htab->brlt)->rel_hdr,
13235 elf_section_data (htab->brlt)->relocs,
13239 if (htab->glink != NULL
13240 && htab->glink->reloc_count != 0
13241 && !_bfd_elf_link_output_relocs (output_bfd,
13243 &elf_section_data (htab->glink)->rel_hdr,
13244 elf_section_data (htab->glink)->relocs,
13248 /* We need to handle writing out multiple GOT sections ourselves,
13249 since we didn't add them to DYNOBJ. We know dynobj is the first
13251 while ((dynobj = dynobj->link_next) != NULL)
13255 if (!is_ppc64_elf (dynobj))
13258 s = ppc64_elf_tdata (dynobj)->got;
13261 && s->output_section != bfd_abs_section_ptr
13262 && !bfd_set_section_contents (output_bfd, s->output_section,
13263 s->contents, s->output_offset,
13266 s = ppc64_elf_tdata (dynobj)->relgot;
13269 && s->output_section != bfd_abs_section_ptr
13270 && !bfd_set_section_contents (output_bfd, s->output_section,
13271 s->contents, s->output_offset,
13279 #include "elf64-target.h"