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. */
2551 /* Non-zero if got.ent points to real entry. */
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;
2597 #define ppc64_elf_tdata(bfd) \
2598 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2600 #define ppc64_tlsld_got(bfd) \
2601 (&ppc64_elf_tdata (bfd)->tlsld_got)
2603 #define is_ppc64_elf(bfd) \
2604 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2605 && elf_object_id (bfd) == PPC64_ELF_TDATA)
2607 /* Override the generic function because we store some extras. */
2610 ppc64_elf_mkobject (bfd *abfd)
2612 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2616 /* Fix bad default arch selected for a 64 bit input bfd when the
2617 default is 32 bit. */
2620 ppc64_elf_object_p (bfd *abfd)
2622 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2624 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2626 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2628 /* Relies on arch after 32 bit default being 64 bit default. */
2629 abfd->arch_info = abfd->arch_info->next;
2630 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2636 /* Support for core dump NOTE sections. */
2639 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2641 size_t offset, size;
2643 if (note->descsz != 504)
2647 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2650 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2656 /* Make a ".reg/999" section. */
2657 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2658 size, note->descpos + offset);
2662 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2664 if (note->descsz != 136)
2667 elf_tdata (abfd)->core_program
2668 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2669 elf_tdata (abfd)->core_command
2670 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2676 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2689 va_start (ap, note_type);
2690 memset (data, 0, 40);
2691 strncpy (data + 40, va_arg (ap, const char *), 16);
2692 strncpy (data + 56, va_arg (ap, const char *), 80);
2694 return elfcore_write_note (abfd, buf, bufsiz,
2695 "CORE", note_type, data, sizeof (data));
2706 va_start (ap, note_type);
2707 memset (data, 0, 112);
2708 pid = va_arg (ap, long);
2709 bfd_put_32 (abfd, pid, data + 32);
2710 cursig = va_arg (ap, int);
2711 bfd_put_16 (abfd, cursig, data + 12);
2712 greg = va_arg (ap, const void *);
2713 memcpy (data + 112, greg, 384);
2714 memset (data + 496, 0, 8);
2716 return elfcore_write_note (abfd, buf, bufsiz,
2717 "CORE", note_type, data, sizeof (data));
2722 /* Merge backend specific data from an object file to the output
2723 object file when linking. */
2726 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2728 /* Check if we have the same endianess. */
2729 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2730 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2731 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2735 if (bfd_big_endian (ibfd))
2736 msg = _("%B: compiled for a big endian system "
2737 "and target is little endian");
2739 msg = _("%B: compiled for a little endian system "
2740 "and target is big endian");
2742 (*_bfd_error_handler) (msg, ibfd);
2744 bfd_set_error (bfd_error_wrong_format);
2751 /* Add extra PPC sections. */
2753 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2755 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2756 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2757 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2758 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2759 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2760 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2761 { NULL, 0, 0, 0, 0 }
2764 enum _ppc64_sec_type {
2770 struct _ppc64_elf_section_data
2772 struct bfd_elf_section_data elf;
2776 /* An array with one entry for each opd function descriptor. */
2777 struct _opd_sec_data
2779 /* Points to the function code section for local opd entries. */
2780 asection **func_sec;
2782 /* After editing .opd, adjust references to opd local syms. */
2786 /* An array for toc sections, indexed by offset/8. */
2787 struct _toc_sec_data
2789 /* Specifies the relocation symbol index used at a given toc offset. */
2792 /* And the relocation addend. */
2797 enum _ppc64_sec_type sec_type:2;
2799 /* Flag set when small branches are detected. Used to
2800 select suitable defaults for the stub group size. */
2801 unsigned int has_14bit_branch:1;
2804 #define ppc64_elf_section_data(sec) \
2805 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2808 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2810 if (!sec->used_by_bfd)
2812 struct _ppc64_elf_section_data *sdata;
2813 bfd_size_type amt = sizeof (*sdata);
2815 sdata = bfd_zalloc (abfd, amt);
2818 sec->used_by_bfd = sdata;
2821 return _bfd_elf_new_section_hook (abfd, sec);
2824 static struct _opd_sec_data *
2825 get_opd_info (asection * sec)
2828 && ppc64_elf_section_data (sec) != NULL
2829 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2830 return &ppc64_elf_section_data (sec)->u.opd;
2834 /* Parameters for the qsort hook. */
2835 static bfd_boolean synthetic_relocatable;
2837 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2840 compare_symbols (const void *ap, const void *bp)
2842 const asymbol *a = * (const asymbol **) ap;
2843 const asymbol *b = * (const asymbol **) bp;
2845 /* Section symbols first. */
2846 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2848 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2851 /* then .opd symbols. */
2852 if (strcmp (a->section->name, ".opd") == 0
2853 && strcmp (b->section->name, ".opd") != 0)
2855 if (strcmp (a->section->name, ".opd") != 0
2856 && strcmp (b->section->name, ".opd") == 0)
2859 /* then other code symbols. */
2860 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2861 == (SEC_CODE | SEC_ALLOC)
2862 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2863 != (SEC_CODE | SEC_ALLOC))
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 != (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 == (SEC_CODE | SEC_ALLOC))
2872 if (synthetic_relocatable)
2874 if (a->section->id < b->section->id)
2877 if (a->section->id > b->section->id)
2881 if (a->value + a->section->vma < b->value + b->section->vma)
2884 if (a->value + a->section->vma > b->value + b->section->vma)
2887 /* For syms with the same value, prefer strong dynamic global function
2888 syms over other syms. */
2889 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2892 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2895 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2898 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2901 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2904 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2907 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2910 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2916 /* Search SYMS for a symbol of the given VALUE. */
2919 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2927 mid = (lo + hi) >> 1;
2928 if (syms[mid]->value + syms[mid]->section->vma < value)
2930 else if (syms[mid]->value + syms[mid]->section->vma > value)
2940 mid = (lo + hi) >> 1;
2941 if (syms[mid]->section->id < id)
2943 else if (syms[mid]->section->id > id)
2945 else if (syms[mid]->value < value)
2947 else if (syms[mid]->value > value)
2957 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2959 bfd_vma vma = *(bfd_vma *) ptr;
2960 return ((section->flags & SEC_ALLOC) != 0
2961 && section->vma <= vma
2962 && vma < section->vma + section->size);
2965 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2966 entry syms. Also generate @plt symbols for the glink branch table. */
2969 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2970 long static_count, asymbol **static_syms,
2971 long dyn_count, asymbol **dyn_syms,
2978 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2980 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2985 opd = bfd_get_section_by_name (abfd, ".opd");
2989 symcount = static_count;
2991 symcount += dyn_count;
2995 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2999 if (!relocatable && static_count != 0 && dyn_count != 0)
3001 /* Use both symbol tables. */
3002 memcpy (syms, static_syms, static_count * sizeof (*syms));
3003 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3005 else if (!relocatable && static_count == 0)
3006 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3008 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3010 synthetic_relocatable = relocatable;
3011 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3013 if (!relocatable && symcount > 1)
3016 /* Trim duplicate syms, since we may have merged the normal and
3017 dynamic symbols. Actually, we only care about syms that have
3018 different values, so trim any with the same value. */
3019 for (i = 1, j = 1; i < symcount; ++i)
3020 if (syms[i - 1]->value + syms[i - 1]->section->vma
3021 != syms[i]->value + syms[i]->section->vma)
3022 syms[j++] = syms[i];
3027 if (strcmp (syms[i]->section->name, ".opd") == 0)
3031 for (; i < symcount; ++i)
3032 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3033 != (SEC_CODE | SEC_ALLOC))
3034 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3038 for (; i < symcount; ++i)
3039 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3043 for (; i < symcount; ++i)
3044 if (strcmp (syms[i]->section->name, ".opd") != 0)
3048 for (; i < symcount; ++i)
3049 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 != (SEC_CODE | SEC_ALLOC))
3058 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3063 if (opdsymend == secsymend)
3066 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3067 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3071 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3078 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3082 while (r < opd->relocation + relcount
3083 && r->address < syms[i]->value + opd->vma)
3086 if (r == opd->relocation + relcount)
3089 if (r->address != syms[i]->value + opd->vma)
3092 if (r->howto->type != R_PPC64_ADDR64)
3095 sym = *r->sym_ptr_ptr;
3096 if (!sym_exists_at (syms, opdsymend, symcount,
3097 sym->section->id, sym->value + r->addend))
3100 size += sizeof (asymbol);
3101 size += strlen (syms[i]->name) + 2;
3105 s = *ret = bfd_malloc (size);
3112 names = (char *) (s + count);
3114 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3118 while (r < opd->relocation + relcount
3119 && r->address < syms[i]->value + opd->vma)
3122 if (r == opd->relocation + relcount)
3125 if (r->address != syms[i]->value + opd->vma)
3128 if (r->howto->type != R_PPC64_ADDR64)
3131 sym = *r->sym_ptr_ptr;
3132 if (!sym_exists_at (syms, opdsymend, symcount,
3133 sym->section->id, sym->value + r->addend))
3138 s->flags |= BSF_SYNTHETIC;
3139 s->section = sym->section;
3140 s->value = sym->value + r->addend;
3143 len = strlen (syms[i]->name);
3144 memcpy (names, syms[i]->name, len + 1);
3146 /* Have udata.p point back to the original symbol this
3147 synthetic symbol was derived from. */
3148 s->udata.p = syms[i];
3155 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3159 bfd_vma glink_vma = 0, resolv_vma = 0;
3160 asection *dynamic, *glink = NULL, *relplt = NULL;
3163 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3167 free_contents_and_exit:
3175 for (i = secsymend; i < opdsymend; ++i)
3179 /* Ignore bogus symbols. */
3180 if (syms[i]->value > opd->size - 8)
3183 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3184 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3187 size += sizeof (asymbol);
3188 size += strlen (syms[i]->name) + 2;
3192 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3194 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3196 bfd_byte *dynbuf, *extdyn, *extdynend;
3198 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3200 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3201 goto free_contents_and_exit;
3203 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3204 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3207 extdynend = extdyn + dynamic->size;
3208 for (; extdyn < extdynend; extdyn += extdynsize)
3210 Elf_Internal_Dyn dyn;
3211 (*swap_dyn_in) (abfd, extdyn, &dyn);
3213 if (dyn.d_tag == DT_NULL)
3216 if (dyn.d_tag == DT_PPC64_GLINK)
3218 /* The first glink stub starts at offset 32; see comment in
3219 ppc64_elf_finish_dynamic_sections. */
3220 glink_vma = dyn.d_un.d_val + 32;
3221 /* The .glink section usually does not survive the final
3222 link; search for the section (usually .text) where the
3223 glink stubs now reside. */
3224 glink = bfd_sections_find_if (abfd, section_covers_vma,
3235 /* Determine __glink trampoline by reading the relative branch
3236 from the first glink stub. */
3238 if (bfd_get_section_contents (abfd, glink, buf,
3239 glink_vma + 4 - glink->vma, 4))
3241 unsigned int insn = bfd_get_32 (abfd, buf);
3243 if ((insn & ~0x3fffffc) == 0)
3244 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3248 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3250 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3253 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3254 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3255 goto free_contents_and_exit;
3257 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3258 size += plt_count * sizeof (asymbol);
3260 p = relplt->relocation;
3261 for (i = 0; i < plt_count; i++, p++)
3263 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3265 size += sizeof ("+0x") - 1 + 16;
3270 s = *ret = bfd_malloc (size);
3272 goto free_contents_and_exit;
3274 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3276 for (i = secsymend; i < opdsymend; ++i)
3280 if (syms[i]->value > opd->size - 8)
3283 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3284 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3288 asection *sec = abfd->sections;
3295 long mid = (lo + hi) >> 1;
3296 if (syms[mid]->section->vma < ent)
3298 else if (syms[mid]->section->vma > ent)
3302 sec = syms[mid]->section;
3307 if (lo >= hi && lo > codesecsym)
3308 sec = syms[lo - 1]->section;
3310 for (; sec != NULL; sec = sec->next)
3314 if ((sec->flags & SEC_ALLOC) == 0
3315 || (sec->flags & SEC_LOAD) == 0)
3317 if ((sec->flags & SEC_CODE) != 0)
3320 s->flags |= BSF_SYNTHETIC;
3321 s->value = ent - s->section->vma;
3324 len = strlen (syms[i]->name);
3325 memcpy (names, syms[i]->name, len + 1);
3327 /* Have udata.p point back to the original symbol this
3328 synthetic symbol was derived from. */
3329 s->udata.p = syms[i];
3335 if (glink != NULL && relplt != NULL)
3339 /* Add a symbol for the main glink trampoline. */
3340 memset (s, 0, sizeof *s);
3342 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3344 s->value = resolv_vma - glink->vma;
3346 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3347 names += sizeof ("__glink_PLTresolve");
3352 /* FIXME: It would be very much nicer to put sym@plt on the
3353 stub rather than on the glink branch table entry. The
3354 objdump disassembler would then use a sensible symbol
3355 name on plt calls. The difficulty in doing so is
3356 a) finding the stubs, and,
3357 b) matching stubs against plt entries, and,
3358 c) there can be multiple stubs for a given plt entry.
3360 Solving (a) could be done by code scanning, but older
3361 ppc64 binaries used different stubs to current code.
3362 (b) is the tricky one since you need to known the toc
3363 pointer for at least one function that uses a pic stub to
3364 be able to calculate the plt address referenced.
3365 (c) means gdb would need to set multiple breakpoints (or
3366 find the glink branch itself) when setting breakpoints
3367 for pending shared library loads. */
3368 p = relplt->relocation;
3369 for (i = 0; i < plt_count; i++, p++)
3373 *s = **p->sym_ptr_ptr;
3374 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3375 we are defining a symbol, ensure one of them is set. */
3376 if ((s->flags & BSF_LOCAL) == 0)
3377 s->flags |= BSF_GLOBAL;
3378 s->flags |= BSF_SYNTHETIC;
3380 s->value = glink_vma - glink->vma;
3383 len = strlen ((*p->sym_ptr_ptr)->name);
3384 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3388 memcpy (names, "+0x", sizeof ("+0x") - 1);
3389 names += sizeof ("+0x") - 1;
3390 bfd_sprintf_vma (abfd, names, p->addend);
3391 names += strlen (names);
3393 memcpy (names, "@plt", sizeof ("@plt"));
3394 names += sizeof ("@plt");
3409 /* The following functions are specific to the ELF linker, while
3410 functions above are used generally. Those named ppc64_elf_* are
3411 called by the main ELF linker code. They appear in this file more
3412 or less in the order in which they are called. eg.
3413 ppc64_elf_check_relocs is called early in the link process,
3414 ppc64_elf_finish_dynamic_sections is one of the last functions
3417 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3418 functions have both a function code symbol and a function descriptor
3419 symbol. A call to foo in a relocatable object file looks like:
3426 The function definition in another object file might be:
3430 . .quad .TOC.@tocbase
3436 When the linker resolves the call during a static link, the branch
3437 unsurprisingly just goes to .foo and the .opd information is unused.
3438 If the function definition is in a shared library, things are a little
3439 different: The call goes via a plt call stub, the opd information gets
3440 copied to the plt, and the linker patches the nop.
3448 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3449 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3450 . std 2,40(1) # this is the general idea
3458 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3460 The "reloc ()" notation is supposed to indicate that the linker emits
3461 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3464 What are the difficulties here? Well, firstly, the relocations
3465 examined by the linker in check_relocs are against the function code
3466 sym .foo, while the dynamic relocation in the plt is emitted against
3467 the function descriptor symbol, foo. Somewhere along the line, we need
3468 to carefully copy dynamic link information from one symbol to the other.
3469 Secondly, the generic part of the elf linker will make .foo a dynamic
3470 symbol as is normal for most other backends. We need foo dynamic
3471 instead, at least for an application final link. However, when
3472 creating a shared library containing foo, we need to have both symbols
3473 dynamic so that references to .foo are satisfied during the early
3474 stages of linking. Otherwise the linker might decide to pull in a
3475 definition from some other object, eg. a static library.
3477 Update: As of August 2004, we support a new convention. Function
3478 calls may use the function descriptor symbol, ie. "bl foo". This
3479 behaves exactly as "bl .foo". */
3481 /* The linker needs to keep track of the number of relocs that it
3482 decides to copy as dynamic relocs in check_relocs for each symbol.
3483 This is so that it can later discard them if they are found to be
3484 unnecessary. We store the information in a field extending the
3485 regular ELF linker hash table. */
3487 struct ppc_dyn_relocs
3489 struct ppc_dyn_relocs *next;
3491 /* The input section of the reloc. */
3494 /* Total number of relocs copied for the input section. */
3495 bfd_size_type count;
3497 /* Number of pc-relative relocs copied for the input section. */
3498 bfd_size_type pc_count;
3501 /* Of those relocs that might be copied as dynamic relocs, this function
3502 selects those that must be copied when linking a shared library,
3503 even when the symbol is local. */
3506 must_be_dyn_reloc (struct bfd_link_info *info,
3507 enum elf_ppc64_reloc_type r_type)
3519 case R_PPC64_TPREL16:
3520 case R_PPC64_TPREL16_LO:
3521 case R_PPC64_TPREL16_HI:
3522 case R_PPC64_TPREL16_HA:
3523 case R_PPC64_TPREL16_DS:
3524 case R_PPC64_TPREL16_LO_DS:
3525 case R_PPC64_TPREL16_HIGHER:
3526 case R_PPC64_TPREL16_HIGHERA:
3527 case R_PPC64_TPREL16_HIGHEST:
3528 case R_PPC64_TPREL16_HIGHESTA:
3529 case R_PPC64_TPREL64:
3530 return !info->executable;
3534 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3535 copying dynamic variables from a shared lib into an app's dynbss
3536 section, and instead use a dynamic relocation to point into the
3537 shared lib. With code that gcc generates, it's vital that this be
3538 enabled; In the PowerPC64 ABI, the address of a function is actually
3539 the address of a function descriptor, which resides in the .opd
3540 section. gcc uses the descriptor directly rather than going via the
3541 GOT as some other ABI's do, which means that initialized function
3542 pointers must reference the descriptor. Thus, a function pointer
3543 initialized to the address of a function in a shared library will
3544 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3545 redefines the function descriptor symbol to point to the copy. This
3546 presents a problem as a plt entry for that function is also
3547 initialized from the function descriptor symbol and the copy reloc
3548 may not be initialized first. */
3549 #define ELIMINATE_COPY_RELOCS 1
3551 /* Section name for stubs is the associated section name plus this
3553 #define STUB_SUFFIX ".stub"
3556 ppc_stub_long_branch:
3557 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3558 destination, but a 24 bit branch in a stub section will reach.
3561 ppc_stub_plt_branch:
3562 Similar to the above, but a 24 bit branch in the stub section won't
3563 reach its destination.
3564 . addis %r12,%r2,xxx@toc@ha
3565 . ld %r11,xxx@toc@l(%r12)
3570 Used to call a function in a shared library. If it so happens that
3571 the plt entry referenced crosses a 64k boundary, then an extra
3572 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3573 . addis %r12,%r2,xxx@toc@ha
3575 . ld %r11,xxx+0@toc@l(%r12)
3577 . ld %r2,xxx+8@toc@l(%r12)
3578 . ld %r11,xxx+16@toc@l(%r12)
3581 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3582 code to adjust the value and save r2 to support multiple toc sections.
3583 A ppc_stub_long_branch with an r2 offset looks like:
3585 . addis %r2,%r2,off@ha
3586 . addi %r2,%r2,off@l
3589 A ppc_stub_plt_branch with an r2 offset looks like:
3591 . addis %r12,%r2,xxx@toc@ha
3592 . ld %r11,xxx@toc@l(%r12)
3593 . addis %r2,%r2,off@ha
3594 . addi %r2,%r2,off@l
3598 In cases where the "addis" instruction would add zero, the "addis" is
3599 omitted and following instructions modified slightly in some cases.
3602 enum ppc_stub_type {
3604 ppc_stub_long_branch,
3605 ppc_stub_long_branch_r2off,
3606 ppc_stub_plt_branch,
3607 ppc_stub_plt_branch_r2off,
3611 struct ppc_stub_hash_entry {
3613 /* Base hash table entry structure. */
3614 struct bfd_hash_entry root;
3616 enum ppc_stub_type stub_type;
3618 /* The stub section. */
3621 /* Offset within stub_sec of the beginning of this stub. */
3622 bfd_vma stub_offset;
3624 /* Given the symbol's value and its section we can determine its final
3625 value when building the stubs (so the stub knows where to jump. */
3626 bfd_vma target_value;
3627 asection *target_section;
3629 /* The symbol table entry, if any, that this was derived from. */
3630 struct ppc_link_hash_entry *h;
3631 struct plt_entry *plt_ent;
3633 /* And the reloc addend that this was derived from. */
3636 /* Where this stub is being called from, or, in the case of combined
3637 stub sections, the first input section in the group. */
3641 struct ppc_branch_hash_entry {
3643 /* Base hash table entry structure. */
3644 struct bfd_hash_entry root;
3646 /* Offset within branch lookup table. */
3647 unsigned int offset;
3649 /* Generation marker. */
3653 struct ppc_link_hash_entry
3655 struct elf_link_hash_entry elf;
3658 /* A pointer to the most recently used stub hash entry against this
3660 struct ppc_stub_hash_entry *stub_cache;
3662 /* A pointer to the next symbol starting with a '.' */
3663 struct ppc_link_hash_entry *next_dot_sym;
3666 /* Track dynamic relocs copied for this symbol. */
3667 struct ppc_dyn_relocs *dyn_relocs;
3669 /* Link between function code and descriptor symbols. */
3670 struct ppc_link_hash_entry *oh;
3672 /* Flag function code and descriptor symbols. */
3673 unsigned int is_func:1;
3674 unsigned int is_func_descriptor:1;
3675 unsigned int fake:1;
3677 /* Whether global opd/toc sym has been adjusted or not.
3678 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3679 should be set for all globals defined in any opd/toc section. */
3680 unsigned int adjust_done:1;
3682 /* Set if we twiddled this symbol to weak at some stage. */
3683 unsigned int was_undefined:1;
3685 /* Contexts in which symbol is used in the GOT (or TOC).
3686 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3687 corresponding relocs are encountered during check_relocs.
3688 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3689 indicate the corresponding GOT entry type is not needed.
3690 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3691 a TPREL one. We use a separate flag rather than setting TPREL
3692 just for convenience in distinguishing the two cases. */
3693 #define TLS_GD 1 /* GD reloc. */
3694 #define TLS_LD 2 /* LD reloc. */
3695 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3696 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3697 #define TLS_TLS 16 /* Any TLS reloc. */
3698 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3699 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3700 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3704 /* ppc64 ELF linker hash table. */
3706 struct ppc_link_hash_table
3708 struct elf_link_hash_table elf;
3710 /* The stub hash table. */
3711 struct bfd_hash_table stub_hash_table;
3713 /* Another hash table for plt_branch stubs. */
3714 struct bfd_hash_table branch_hash_table;
3716 /* Linker stub bfd. */
3719 /* Linker call-backs. */
3720 asection * (*add_stub_section) (const char *, asection *);
3721 void (*layout_sections_again) (void);
3723 /* Array to keep track of which stub sections have been created, and
3724 information on stub grouping. */
3726 /* This is the section to which stubs in the group will be attached. */
3728 /* The stub section. */
3730 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3734 /* Temp used when calculating TOC pointers. */
3737 asection *toc_first_sec;
3739 /* Highest input section id. */
3742 /* Highest output section index. */
3745 /* Used when adding symbols. */
3746 struct ppc_link_hash_entry *dot_syms;
3748 /* List of input sections for each output section. */
3749 asection **input_list;
3751 /* Short-cuts to get to dynamic linker sections. */
3764 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3765 struct ppc_link_hash_entry *tls_get_addr;
3766 struct ppc_link_hash_entry *tls_get_addr_fd;
3768 /* The size of reliplt used by got entry relocs. */
3769 bfd_size_type got_reli_size;
3772 unsigned long stub_count[ppc_stub_plt_call];
3774 /* Number of stubs against global syms. */
3775 unsigned long stub_globals;
3777 /* Set if we should emit symbols for stubs. */
3778 unsigned int emit_stub_syms:1;
3780 /* Set if __tls_get_addr optimization should not be done. */
3781 unsigned int no_tls_get_addr_opt:1;
3783 /* Support for multiple toc sections. */
3784 unsigned int multi_toc_needed:1;
3785 unsigned int second_toc_pass:1;
3788 unsigned int stub_error:1;
3790 /* Temp used by ppc64_elf_process_dot_syms. */
3791 unsigned int twiddled_syms:1;
3793 /* Incremented every time we size stubs. */
3794 unsigned int stub_iteration;
3796 /* Small local sym cache. */
3797 struct sym_cache sym_cache;
3800 /* Rename some of the generic section flags to better document how they
3802 #define has_toc_reloc has_gp_reloc
3803 #define makes_toc_func_call need_finalize_relax
3804 #define call_check_in_progress reloc_done
3806 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3808 #define ppc_hash_table(p) \
3809 ((struct ppc_link_hash_table *) ((p)->hash))
3811 #define ppc_stub_hash_lookup(table, string, create, copy) \
3812 ((struct ppc_stub_hash_entry *) \
3813 bfd_hash_lookup ((table), (string), (create), (copy)))
3815 #define ppc_branch_hash_lookup(table, string, create, copy) \
3816 ((struct ppc_branch_hash_entry *) \
3817 bfd_hash_lookup ((table), (string), (create), (copy)))
3819 /* Create an entry in the stub hash table. */
3821 static struct bfd_hash_entry *
3822 stub_hash_newfunc (struct bfd_hash_entry *entry,
3823 struct bfd_hash_table *table,
3826 /* Allocate the structure if it has not already been allocated by a
3830 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3835 /* Call the allocation method of the superclass. */
3836 entry = bfd_hash_newfunc (entry, table, string);
3839 struct ppc_stub_hash_entry *eh;
3841 /* Initialize the local fields. */
3842 eh = (struct ppc_stub_hash_entry *) entry;
3843 eh->stub_type = ppc_stub_none;
3844 eh->stub_sec = NULL;
3845 eh->stub_offset = 0;
3846 eh->target_value = 0;
3847 eh->target_section = NULL;
3855 /* Create an entry in the branch hash table. */
3857 static struct bfd_hash_entry *
3858 branch_hash_newfunc (struct bfd_hash_entry *entry,
3859 struct bfd_hash_table *table,
3862 /* Allocate the structure if it has not already been allocated by a
3866 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3871 /* Call the allocation method of the superclass. */
3872 entry = bfd_hash_newfunc (entry, table, string);
3875 struct ppc_branch_hash_entry *eh;
3877 /* Initialize the local fields. */
3878 eh = (struct ppc_branch_hash_entry *) entry;
3886 /* Create an entry in a ppc64 ELF linker hash table. */
3888 static struct bfd_hash_entry *
3889 link_hash_newfunc (struct bfd_hash_entry *entry,
3890 struct bfd_hash_table *table,
3893 /* Allocate the structure if it has not already been allocated by a
3897 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3902 /* Call the allocation method of the superclass. */
3903 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3906 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3908 memset (&eh->u.stub_cache, 0,
3909 (sizeof (struct ppc_link_hash_entry)
3910 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3912 /* When making function calls, old ABI code references function entry
3913 points (dot symbols), while new ABI code references the function
3914 descriptor symbol. We need to make any combination of reference and
3915 definition work together, without breaking archive linking.
3917 For a defined function "foo" and an undefined call to "bar":
3918 An old object defines "foo" and ".foo", references ".bar" (possibly
3920 A new object defines "foo" and references "bar".
3922 A new object thus has no problem with its undefined symbols being
3923 satisfied by definitions in an old object. On the other hand, the
3924 old object won't have ".bar" satisfied by a new object.
3926 Keep a list of newly added dot-symbols. */
3928 if (string[0] == '.')
3930 struct ppc_link_hash_table *htab;
3932 htab = (struct ppc_link_hash_table *) table;
3933 eh->u.next_dot_sym = htab->dot_syms;
3934 htab->dot_syms = eh;
3941 /* Create a ppc64 ELF linker hash table. */
3943 static struct bfd_link_hash_table *
3944 ppc64_elf_link_hash_table_create (bfd *abfd)
3946 struct ppc_link_hash_table *htab;
3947 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3949 htab = bfd_zmalloc (amt);
3953 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3954 sizeof (struct ppc_link_hash_entry)))
3960 /* Init the stub hash table too. */
3961 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3962 sizeof (struct ppc_stub_hash_entry)))
3965 /* And the branch hash table. */
3966 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3967 sizeof (struct ppc_branch_hash_entry)))
3970 /* Initializing two fields of the union is just cosmetic. We really
3971 only care about glist, but when compiled on a 32-bit host the
3972 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3973 debugger inspection of these fields look nicer. */
3974 htab->elf.init_got_refcount.refcount = 0;
3975 htab->elf.init_got_refcount.glist = NULL;
3976 htab->elf.init_plt_refcount.refcount = 0;
3977 htab->elf.init_plt_refcount.glist = NULL;
3978 htab->elf.init_got_offset.offset = 0;
3979 htab->elf.init_got_offset.glist = NULL;
3980 htab->elf.init_plt_offset.offset = 0;
3981 htab->elf.init_plt_offset.glist = NULL;
3983 return &htab->elf.root;
3986 /* Free the derived linker hash table. */
3989 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3991 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3993 bfd_hash_table_free (&ret->stub_hash_table);
3994 bfd_hash_table_free (&ret->branch_hash_table);
3995 _bfd_generic_link_hash_table_free (hash);
3998 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4001 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4003 struct ppc_link_hash_table *htab;
4005 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4007 /* Always hook our dynamic sections into the first bfd, which is the
4008 linker created stub bfd. This ensures that the GOT header is at
4009 the start of the output TOC section. */
4010 htab = ppc_hash_table (info);
4011 htab->stub_bfd = abfd;
4012 htab->elf.dynobj = abfd;
4015 /* Build a name for an entry in the stub hash table. */
4018 ppc_stub_name (const asection *input_section,
4019 const asection *sym_sec,
4020 const struct ppc_link_hash_entry *h,
4021 const Elf_Internal_Rela *rel)
4026 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4027 offsets from a sym as a branch target? In fact, we could
4028 probably assume the addend is always zero. */
4029 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4033 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4034 stub_name = bfd_malloc (len);
4035 if (stub_name == NULL)
4038 sprintf (stub_name, "%08x.%s+%x",
4039 input_section->id & 0xffffffff,
4040 h->elf.root.root.string,
4041 (int) rel->r_addend & 0xffffffff);
4045 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4046 stub_name = bfd_malloc (len);
4047 if (stub_name == NULL)
4050 sprintf (stub_name, "%08x.%x:%x+%x",
4051 input_section->id & 0xffffffff,
4052 sym_sec->id & 0xffffffff,
4053 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4054 (int) rel->r_addend & 0xffffffff);
4056 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4057 stub_name[len - 2] = 0;
4061 /* Look up an entry in the stub hash. Stub entries are cached because
4062 creating the stub name takes a bit of time. */
4064 static struct ppc_stub_hash_entry *
4065 ppc_get_stub_entry (const asection *input_section,
4066 const asection *sym_sec,
4067 struct ppc_link_hash_entry *h,
4068 const Elf_Internal_Rela *rel,
4069 struct ppc_link_hash_table *htab)
4071 struct ppc_stub_hash_entry *stub_entry;
4072 const asection *id_sec;
4074 /* If this input section is part of a group of sections sharing one
4075 stub section, then use the id of the first section in the group.
4076 Stub names need to include a section id, as there may well be
4077 more than one stub used to reach say, printf, and we need to
4078 distinguish between them. */
4079 id_sec = htab->stub_group[input_section->id].link_sec;
4081 if (h != NULL && h->u.stub_cache != NULL
4082 && h->u.stub_cache->h == h
4083 && h->u.stub_cache->id_sec == id_sec)
4085 stub_entry = h->u.stub_cache;
4091 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4092 if (stub_name == NULL)
4095 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4096 stub_name, FALSE, FALSE);
4098 h->u.stub_cache = stub_entry;
4106 /* Add a new stub entry to the stub hash. Not all fields of the new
4107 stub entry are initialised. */
4109 static struct ppc_stub_hash_entry *
4110 ppc_add_stub (const char *stub_name,
4112 struct ppc_link_hash_table *htab)
4116 struct ppc_stub_hash_entry *stub_entry;
4118 link_sec = htab->stub_group[section->id].link_sec;
4119 stub_sec = htab->stub_group[section->id].stub_sec;
4120 if (stub_sec == NULL)
4122 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4123 if (stub_sec == NULL)
4129 namelen = strlen (link_sec->name);
4130 len = namelen + sizeof (STUB_SUFFIX);
4131 s_name = bfd_alloc (htab->stub_bfd, len);
4135 memcpy (s_name, link_sec->name, namelen);
4136 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4137 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4138 if (stub_sec == NULL)
4140 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4142 htab->stub_group[section->id].stub_sec = stub_sec;
4145 /* Enter this entry into the linker stub hash table. */
4146 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4148 if (stub_entry == NULL)
4150 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
4151 section->owner, stub_name);
4155 stub_entry->stub_sec = stub_sec;
4156 stub_entry->stub_offset = 0;
4157 stub_entry->id_sec = link_sec;
4161 /* Create sections for linker generated code. */
4164 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4166 struct ppc_link_hash_table *htab;
4169 htab = ppc_hash_table (info);
4171 /* Create .sfpr for code to save and restore fp regs. */
4172 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4173 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4174 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4176 if (htab->sfpr == NULL
4177 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4180 /* Create .glink for lazy dynamic linking support. */
4181 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4183 if (htab->glink == NULL
4184 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4187 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4188 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4189 if (htab->iplt == NULL
4190 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4193 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4194 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4195 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4198 if (htab->reliplt == NULL
4199 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4202 /* Create branch lookup table for plt_branch stubs. */
4203 flags = (SEC_ALLOC | SEC_LOAD
4204 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4205 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4207 if (htab->brlt == NULL
4208 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4214 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4215 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4216 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4219 if (htab->relbrlt == NULL
4220 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4226 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4227 not already done. */
4230 create_got_section (bfd *abfd, struct bfd_link_info *info)
4232 asection *got, *relgot;
4234 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4236 if (!is_ppc64_elf (abfd))
4241 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4244 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4249 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4250 | SEC_LINKER_CREATED);
4252 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4254 || !bfd_set_section_alignment (abfd, got, 3))
4257 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4258 flags | SEC_READONLY);
4260 || ! bfd_set_section_alignment (abfd, relgot, 3))
4263 ppc64_elf_tdata (abfd)->got = got;
4264 ppc64_elf_tdata (abfd)->relgot = relgot;
4268 /* Create the dynamic sections, and set up shortcuts. */
4271 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4273 struct ppc_link_hash_table *htab;
4275 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4278 htab = ppc_hash_table (info);
4280 htab->got = bfd_get_section_by_name (dynobj, ".got");
4281 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4282 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4283 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
4285 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
4287 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4288 || (!info->shared && !htab->relbss))
4294 /* Follow indirect and warning symbol links. */
4296 static inline struct bfd_link_hash_entry *
4297 follow_link (struct bfd_link_hash_entry *h)
4299 while (h->type == bfd_link_hash_indirect
4300 || h->type == bfd_link_hash_warning)
4305 static inline struct elf_link_hash_entry *
4306 elf_follow_link (struct elf_link_hash_entry *h)
4308 return (struct elf_link_hash_entry *) follow_link (&h->root);
4311 static inline struct ppc_link_hash_entry *
4312 ppc_follow_link (struct ppc_link_hash_entry *h)
4314 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4317 /* Merge PLT info on FROM with that on TO. */
4320 move_plt_plist (struct ppc_link_hash_entry *from,
4321 struct ppc_link_hash_entry *to)
4323 if (from->elf.plt.plist != NULL)
4325 if (to->elf.plt.plist != NULL)
4327 struct plt_entry **entp;
4328 struct plt_entry *ent;
4330 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4332 struct plt_entry *dent;
4334 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4335 if (dent->addend == ent->addend)
4337 dent->plt.refcount += ent->plt.refcount;
4344 *entp = to->elf.plt.plist;
4347 to->elf.plt.plist = from->elf.plt.plist;
4348 from->elf.plt.plist = NULL;
4352 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4355 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4356 struct elf_link_hash_entry *dir,
4357 struct elf_link_hash_entry *ind)
4359 struct ppc_link_hash_entry *edir, *eind;
4361 edir = (struct ppc_link_hash_entry *) dir;
4362 eind = (struct ppc_link_hash_entry *) ind;
4364 /* Copy over any dynamic relocs we may have on the indirect sym. */
4365 if (eind->dyn_relocs != NULL)
4367 if (edir->dyn_relocs != NULL)
4369 struct ppc_dyn_relocs **pp;
4370 struct ppc_dyn_relocs *p;
4372 /* Add reloc counts against the indirect sym to the direct sym
4373 list. Merge any entries against the same section. */
4374 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4376 struct ppc_dyn_relocs *q;
4378 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4379 if (q->sec == p->sec)
4381 q->pc_count += p->pc_count;
4382 q->count += p->count;
4389 *pp = edir->dyn_relocs;
4392 edir->dyn_relocs = eind->dyn_relocs;
4393 eind->dyn_relocs = NULL;
4396 edir->is_func |= eind->is_func;
4397 edir->is_func_descriptor |= eind->is_func_descriptor;
4398 edir->tls_mask |= eind->tls_mask;
4399 if (eind->oh != NULL)
4400 edir->oh = ppc_follow_link (eind->oh);
4402 /* If called to transfer flags for a weakdef during processing
4403 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4404 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4405 if (!(ELIMINATE_COPY_RELOCS
4406 && eind->elf.root.type != bfd_link_hash_indirect
4407 && edir->elf.dynamic_adjusted))
4408 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4410 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4411 edir->elf.ref_regular |= eind->elf.ref_regular;
4412 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4413 edir->elf.needs_plt |= eind->elf.needs_plt;
4415 /* If we were called to copy over info for a weak sym, that's all. */
4416 if (eind->elf.root.type != bfd_link_hash_indirect)
4419 /* Copy over got entries that we may have already seen to the
4420 symbol which just became indirect. */
4421 if (eind->elf.got.glist != NULL)
4423 if (edir->elf.got.glist != NULL)
4425 struct got_entry **entp;
4426 struct got_entry *ent;
4428 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4430 struct got_entry *dent;
4432 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4433 if (dent->addend == ent->addend
4434 && dent->owner == ent->owner
4435 && dent->tls_type == ent->tls_type)
4437 dent->got.refcount += ent->got.refcount;
4444 *entp = edir->elf.got.glist;
4447 edir->elf.got.glist = eind->elf.got.glist;
4448 eind->elf.got.glist = NULL;
4451 /* And plt entries. */
4452 move_plt_plist (eind, edir);
4454 if (eind->elf.dynindx != -1)
4456 if (edir->elf.dynindx != -1)
4457 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4458 edir->elf.dynstr_index);
4459 edir->elf.dynindx = eind->elf.dynindx;
4460 edir->elf.dynstr_index = eind->elf.dynstr_index;
4461 eind->elf.dynindx = -1;
4462 eind->elf.dynstr_index = 0;
4466 /* Find the function descriptor hash entry from the given function code
4467 hash entry FH. Link the entries via their OH fields. */
4469 static struct ppc_link_hash_entry *
4470 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4472 struct ppc_link_hash_entry *fdh = fh->oh;
4476 const char *fd_name = fh->elf.root.root.string + 1;
4478 fdh = (struct ppc_link_hash_entry *)
4479 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4483 fdh->is_func_descriptor = 1;
4489 return ppc_follow_link (fdh);
4492 /* Make a fake function descriptor sym for the code sym FH. */
4494 static struct ppc_link_hash_entry *
4495 make_fdh (struct bfd_link_info *info,
4496 struct ppc_link_hash_entry *fh)
4500 struct bfd_link_hash_entry *bh;
4501 struct ppc_link_hash_entry *fdh;
4503 abfd = fh->elf.root.u.undef.abfd;
4504 newsym = bfd_make_empty_symbol (abfd);
4505 newsym->name = fh->elf.root.root.string + 1;
4506 newsym->section = bfd_und_section_ptr;
4508 newsym->flags = BSF_WEAK;
4511 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4512 newsym->flags, newsym->section,
4513 newsym->value, NULL, FALSE, FALSE,
4517 fdh = (struct ppc_link_hash_entry *) bh;
4518 fdh->elf.non_elf = 0;
4520 fdh->is_func_descriptor = 1;
4527 /* Fix function descriptor symbols defined in .opd sections to be
4531 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4532 struct bfd_link_info *info,
4533 Elf_Internal_Sym *isym,
4534 const char **name ATTRIBUTE_UNUSED,
4535 flagword *flags ATTRIBUTE_UNUSED,
4537 bfd_vma *value ATTRIBUTE_UNUSED)
4539 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4540 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4541 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4543 else if (*sec != NULL
4544 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4545 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4550 /* This function makes an old ABI object reference to ".bar" cause the
4551 inclusion of a new ABI object archive that defines "bar".
4552 NAME is a symbol defined in an archive. Return a symbol in the hash
4553 table that might be satisfied by the archive symbols. */
4555 static struct elf_link_hash_entry *
4556 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4557 struct bfd_link_info *info,
4560 struct elf_link_hash_entry *h;
4564 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4566 /* Don't return this sym if it is a fake function descriptor
4567 created by add_symbol_adjust. */
4568 && !(h->root.type == bfd_link_hash_undefweak
4569 && ((struct ppc_link_hash_entry *) h)->fake))
4575 len = strlen (name);
4576 dot_name = bfd_alloc (abfd, len + 2);
4577 if (dot_name == NULL)
4578 return (struct elf_link_hash_entry *) 0 - 1;
4580 memcpy (dot_name + 1, name, len + 1);
4581 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4582 bfd_release (abfd, dot_name);
4586 /* This function satisfies all old ABI object references to ".bar" if a
4587 new ABI object defines "bar". Well, at least, undefined dot symbols
4588 are made weak. This stops later archive searches from including an
4589 object if we already have a function descriptor definition. It also
4590 prevents the linker complaining about undefined symbols.
4591 We also check and correct mismatched symbol visibility here. The
4592 most restrictive visibility of the function descriptor and the
4593 function entry symbol is used. */
4596 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4598 struct ppc_link_hash_table *htab;
4599 struct ppc_link_hash_entry *fdh;
4601 if (eh->elf.root.type == bfd_link_hash_indirect)
4604 if (eh->elf.root.type == bfd_link_hash_warning)
4605 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4607 if (eh->elf.root.root.string[0] != '.')
4610 htab = ppc_hash_table (info);
4611 fdh = lookup_fdh (eh, htab);
4614 if (!info->relocatable
4615 && (eh->elf.root.type == bfd_link_hash_undefined
4616 || eh->elf.root.type == bfd_link_hash_undefweak)
4617 && eh->elf.ref_regular)
4619 /* Make an undefweak function descriptor sym, which is enough to
4620 pull in an --as-needed shared lib, but won't cause link
4621 errors. Archives are handled elsewhere. */
4622 fdh = make_fdh (info, eh);
4625 fdh->elf.ref_regular = 1;
4630 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4631 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4632 if (entry_vis < descr_vis)
4633 fdh->elf.other += entry_vis - descr_vis;
4634 else if (entry_vis > descr_vis)
4635 eh->elf.other += descr_vis - entry_vis;
4637 if ((fdh->elf.root.type == bfd_link_hash_defined
4638 || fdh->elf.root.type == bfd_link_hash_defweak)
4639 && eh->elf.root.type == bfd_link_hash_undefined)
4641 eh->elf.root.type = bfd_link_hash_undefweak;
4642 eh->was_undefined = 1;
4643 htab->twiddled_syms = 1;
4650 /* Process list of dot-symbols we made in link_hash_newfunc. */
4653 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4655 struct ppc_link_hash_table *htab;
4656 struct ppc_link_hash_entry **p, *eh;
4658 htab = ppc_hash_table (info);
4659 if (!is_ppc64_elf (info->output_bfd))
4662 if (is_ppc64_elf (ibfd))
4664 p = &htab->dot_syms;
4665 while ((eh = *p) != NULL)
4668 if (!add_symbol_adjust (eh, info))
4670 p = &eh->u.next_dot_sym;
4674 /* Clear the list for non-ppc64 input files. */
4675 p = &htab->dot_syms;
4676 while ((eh = *p) != NULL)
4679 p = &eh->u.next_dot_sym;
4682 /* We need to fix the undefs list for any syms we have twiddled to
4684 if (htab->twiddled_syms)
4686 bfd_link_repair_undef_list (&htab->elf.root);
4687 htab->twiddled_syms = 0;
4692 /* Undo hash table changes when an --as-needed input file is determined
4693 not to be needed. */
4696 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4697 struct bfd_link_info *info)
4699 ppc_hash_table (info)->dot_syms = NULL;
4703 static struct plt_entry **
4704 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4705 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4707 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4708 struct plt_entry **local_plt;
4709 char *local_got_tls_masks;
4711 if (local_got_ents == NULL)
4713 bfd_size_type size = symtab_hdr->sh_info;
4715 size *= (sizeof (*local_got_ents)
4716 + sizeof (*local_plt)
4717 + sizeof (*local_got_tls_masks));
4718 local_got_ents = bfd_zalloc (abfd, size);
4719 if (local_got_ents == NULL)
4721 elf_local_got_ents (abfd) = local_got_ents;
4724 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4726 struct got_entry *ent;
4728 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4729 if (ent->addend == r_addend
4730 && ent->owner == abfd
4731 && ent->tls_type == tls_type)
4735 bfd_size_type amt = sizeof (*ent);
4736 ent = bfd_alloc (abfd, amt);
4739 ent->next = local_got_ents[r_symndx];
4740 ent->addend = r_addend;
4742 ent->tls_type = tls_type;
4743 ent->is_indirect = FALSE;
4744 ent->got.refcount = 0;
4745 local_got_ents[r_symndx] = ent;
4747 ent->got.refcount += 1;
4750 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4751 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
4752 local_got_tls_masks[r_symndx] |= tls_type;
4754 return local_plt + r_symndx;
4758 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4760 struct plt_entry *ent;
4762 for (ent = *plist; ent != NULL; ent = ent->next)
4763 if (ent->addend == addend)
4767 bfd_size_type amt = sizeof (*ent);
4768 ent = bfd_alloc (abfd, amt);
4772 ent->addend = addend;
4773 ent->plt.refcount = 0;
4776 ent->plt.refcount += 1;
4781 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4783 return (r_type == R_PPC64_REL24
4784 || r_type == R_PPC64_REL14
4785 || r_type == R_PPC64_REL14_BRTAKEN
4786 || r_type == R_PPC64_REL14_BRNTAKEN
4787 || r_type == R_PPC64_ADDR24
4788 || r_type == R_PPC64_ADDR14
4789 || r_type == R_PPC64_ADDR14_BRTAKEN
4790 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4793 /* Look through the relocs for a section during the first phase, and
4794 calculate needed space in the global offset table, procedure
4795 linkage table, and dynamic reloc sections. */
4798 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4799 asection *sec, const Elf_Internal_Rela *relocs)
4801 struct ppc_link_hash_table *htab;
4802 Elf_Internal_Shdr *symtab_hdr;
4803 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4804 const Elf_Internal_Rela *rel;
4805 const Elf_Internal_Rela *rel_end;
4807 asection **opd_sym_map;
4808 struct elf_link_hash_entry *tga, *dottga;
4810 if (info->relocatable)
4813 /* Don't do anything special with non-loaded, non-alloced sections.
4814 In particular, any relocs in such sections should not affect GOT
4815 and PLT reference counting (ie. we don't allow them to create GOT
4816 or PLT entries), there's no possibility or desire to optimize TLS
4817 relocs, and there's not much point in propagating relocs to shared
4818 libs that the dynamic linker won't relocate. */
4819 if ((sec->flags & SEC_ALLOC) == 0)
4822 BFD_ASSERT (is_ppc64_elf (abfd));
4824 htab = ppc_hash_table (info);
4825 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4826 FALSE, FALSE, TRUE);
4827 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4828 FALSE, FALSE, TRUE);
4829 symtab_hdr = &elf_symtab_hdr (abfd);
4831 sym_hashes = elf_sym_hashes (abfd);
4832 sym_hashes_end = (sym_hashes
4833 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4834 - symtab_hdr->sh_info);
4838 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4840 /* Garbage collection needs some extra help with .opd sections.
4841 We don't want to necessarily keep everything referenced by
4842 relocs in .opd, as that would keep all functions. Instead,
4843 if we reference an .opd symbol (a function descriptor), we
4844 want to keep the function code symbol's section. This is
4845 easy for global symbols, but for local syms we need to keep
4846 information about the associated function section. */
4849 amt = sec->size * sizeof (*opd_sym_map) / 8;
4850 opd_sym_map = bfd_zalloc (abfd, amt);
4851 if (opd_sym_map == NULL)
4853 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4854 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4855 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4858 if (htab->sfpr == NULL
4859 && !create_linkage_sections (htab->elf.dynobj, info))
4862 rel_end = relocs + sec->reloc_count;
4863 for (rel = relocs; rel < rel_end; rel++)
4865 unsigned long r_symndx;
4866 struct elf_link_hash_entry *h;
4867 enum elf_ppc64_reloc_type r_type;
4869 struct _ppc64_elf_section_data *ppc64_sec;
4870 struct plt_entry **ifunc;
4872 r_symndx = ELF64_R_SYM (rel->r_info);
4873 if (r_symndx < symtab_hdr->sh_info)
4877 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4878 h = elf_follow_link (h);
4885 if (h->type == STT_GNU_IFUNC)
4888 ifunc = &h->plt.plist;
4893 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4898 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4900 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4901 rel->r_addend, PLT_IFUNC);
4906 r_type = ELF64_R_TYPE (rel->r_info);
4907 if (is_branch_reloc (r_type))
4909 if (h != NULL && (h == tga || h == dottga))
4912 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
4913 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
4914 /* We have a new-style __tls_get_addr call with a marker
4918 /* Mark this section as having an old-style call. */
4919 sec->has_tls_get_addr_call = 1;
4922 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4924 && !update_plt_info (abfd, ifunc, rel->r_addend))
4932 /* These special tls relocs tie a call to __tls_get_addr with
4933 its parameter symbol. */
4936 case R_PPC64_GOT_TLSLD16:
4937 case R_PPC64_GOT_TLSLD16_LO:
4938 case R_PPC64_GOT_TLSLD16_HI:
4939 case R_PPC64_GOT_TLSLD16_HA:
4940 tls_type = TLS_TLS | TLS_LD;
4943 case R_PPC64_GOT_TLSGD16:
4944 case R_PPC64_GOT_TLSGD16_LO:
4945 case R_PPC64_GOT_TLSGD16_HI:
4946 case R_PPC64_GOT_TLSGD16_HA:
4947 tls_type = TLS_TLS | TLS_GD;
4950 case R_PPC64_GOT_TPREL16_DS:
4951 case R_PPC64_GOT_TPREL16_LO_DS:
4952 case R_PPC64_GOT_TPREL16_HI:
4953 case R_PPC64_GOT_TPREL16_HA:
4954 if (!info->executable)
4955 info->flags |= DF_STATIC_TLS;
4956 tls_type = TLS_TLS | TLS_TPREL;
4959 case R_PPC64_GOT_DTPREL16_DS:
4960 case R_PPC64_GOT_DTPREL16_LO_DS:
4961 case R_PPC64_GOT_DTPREL16_HI:
4962 case R_PPC64_GOT_DTPREL16_HA:
4963 tls_type = TLS_TLS | TLS_DTPREL;
4965 sec->has_tls_reloc = 1;
4969 case R_PPC64_GOT16_DS:
4970 case R_PPC64_GOT16_HA:
4971 case R_PPC64_GOT16_HI:
4972 case R_PPC64_GOT16_LO:
4973 case R_PPC64_GOT16_LO_DS:
4974 /* This symbol requires a global offset table entry. */
4975 sec->has_toc_reloc = 1;
4976 if (ppc64_elf_tdata (abfd)->got == NULL
4977 && !create_got_section (abfd, info))
4982 struct ppc_link_hash_entry *eh;
4983 struct got_entry *ent;
4985 eh = (struct ppc_link_hash_entry *) h;
4986 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4987 if (ent->addend == rel->r_addend
4988 && ent->owner == abfd
4989 && ent->tls_type == tls_type)
4993 bfd_size_type amt = sizeof (*ent);
4994 ent = bfd_alloc (abfd, amt);
4997 ent->next = eh->elf.got.glist;
4998 ent->addend = rel->r_addend;
5000 ent->tls_type = tls_type;
5001 ent->is_indirect = FALSE;
5002 ent->got.refcount = 0;
5003 eh->elf.got.glist = ent;
5005 ent->got.refcount += 1;
5006 eh->tls_mask |= tls_type;
5009 /* This is a global offset table entry for a local symbol. */
5010 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5011 rel->r_addend, tls_type))
5015 case R_PPC64_PLT16_HA:
5016 case R_PPC64_PLT16_HI:
5017 case R_PPC64_PLT16_LO:
5020 /* This symbol requires a procedure linkage table entry. We
5021 actually build the entry in adjust_dynamic_symbol,
5022 because this might be a case of linking PIC code without
5023 linking in any dynamic objects, in which case we don't
5024 need to generate a procedure linkage table after all. */
5027 /* It does not make sense to have a procedure linkage
5028 table entry for a local symbol. */
5029 bfd_set_error (bfd_error_bad_value);
5034 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5037 if (h->root.root.string[0] == '.'
5038 && h->root.root.string[1] != '\0')
5039 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5043 /* The following relocations don't need to propagate the
5044 relocation if linking a shared object since they are
5045 section relative. */
5046 case R_PPC64_SECTOFF:
5047 case R_PPC64_SECTOFF_LO:
5048 case R_PPC64_SECTOFF_HI:
5049 case R_PPC64_SECTOFF_HA:
5050 case R_PPC64_SECTOFF_DS:
5051 case R_PPC64_SECTOFF_LO_DS:
5052 case R_PPC64_DTPREL16:
5053 case R_PPC64_DTPREL16_LO:
5054 case R_PPC64_DTPREL16_HI:
5055 case R_PPC64_DTPREL16_HA:
5056 case R_PPC64_DTPREL16_DS:
5057 case R_PPC64_DTPREL16_LO_DS:
5058 case R_PPC64_DTPREL16_HIGHER:
5059 case R_PPC64_DTPREL16_HIGHERA:
5060 case R_PPC64_DTPREL16_HIGHEST:
5061 case R_PPC64_DTPREL16_HIGHESTA:
5066 case R_PPC64_REL16_LO:
5067 case R_PPC64_REL16_HI:
5068 case R_PPC64_REL16_HA:
5072 case R_PPC64_TOC16_LO:
5073 case R_PPC64_TOC16_HI:
5074 case R_PPC64_TOC16_HA:
5075 case R_PPC64_TOC16_DS:
5076 case R_PPC64_TOC16_LO_DS:
5077 sec->has_toc_reloc = 1;
5080 /* This relocation describes the C++ object vtable hierarchy.
5081 Reconstruct it for later use during GC. */
5082 case R_PPC64_GNU_VTINHERIT:
5083 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5087 /* This relocation describes which C++ vtable entries are actually
5088 used. Record for later use during GC. */
5089 case R_PPC64_GNU_VTENTRY:
5090 BFD_ASSERT (h != NULL);
5092 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5097 case R_PPC64_REL14_BRTAKEN:
5098 case R_PPC64_REL14_BRNTAKEN:
5100 asection *dest = NULL;
5102 /* Heuristic: If jumping outside our section, chances are
5103 we are going to need a stub. */
5106 /* If the sym is weak it may be overridden later, so
5107 don't assume we know where a weak sym lives. */
5108 if (h->root.type == bfd_link_hash_defined)
5109 dest = h->root.u.def.section;
5113 Elf_Internal_Sym *isym;
5115 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5120 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5124 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5129 if (h != NULL && ifunc == NULL)
5131 /* We may need a .plt entry if the function this reloc
5132 refers to is in a shared lib. */
5133 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5136 if (h->root.root.string[0] == '.'
5137 && h->root.root.string[1] != '\0')
5138 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5139 if (h == tga || h == dottga)
5140 sec->has_tls_reloc = 1;
5144 case R_PPC64_TPREL64:
5145 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5146 if (!info->executable)
5147 info->flags |= DF_STATIC_TLS;
5150 case R_PPC64_DTPMOD64:
5151 if (rel + 1 < rel_end
5152 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5153 && rel[1].r_offset == rel->r_offset + 8)
5154 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5156 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5159 case R_PPC64_DTPREL64:
5160 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5162 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5163 && rel[-1].r_offset == rel->r_offset - 8)
5164 /* This is the second reloc of a dtpmod, dtprel pair.
5165 Don't mark with TLS_DTPREL. */
5169 sec->has_tls_reloc = 1;
5172 struct ppc_link_hash_entry *eh;
5173 eh = (struct ppc_link_hash_entry *) h;
5174 eh->tls_mask |= tls_type;
5177 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5178 rel->r_addend, tls_type))
5181 ppc64_sec = ppc64_elf_section_data (sec);
5182 if (ppc64_sec->sec_type != sec_toc)
5186 /* One extra to simplify get_tls_mask. */
5187 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5188 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5189 if (ppc64_sec->u.toc.symndx == NULL)
5191 amt = sec->size * sizeof (bfd_vma) / 8;
5192 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5193 if (ppc64_sec->u.toc.add == NULL)
5195 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5196 ppc64_sec->sec_type = sec_toc;
5198 BFD_ASSERT (rel->r_offset % 8 == 0);
5199 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5200 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5202 /* Mark the second slot of a GD or LD entry.
5203 -1 to indicate GD and -2 to indicate LD. */
5204 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5205 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5206 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5207 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5210 case R_PPC64_TPREL16:
5211 case R_PPC64_TPREL16_LO:
5212 case R_PPC64_TPREL16_HI:
5213 case R_PPC64_TPREL16_HA:
5214 case R_PPC64_TPREL16_DS:
5215 case R_PPC64_TPREL16_LO_DS:
5216 case R_PPC64_TPREL16_HIGHER:
5217 case R_PPC64_TPREL16_HIGHERA:
5218 case R_PPC64_TPREL16_HIGHEST:
5219 case R_PPC64_TPREL16_HIGHESTA:
5222 if (!info->executable)
5223 info->flags |= DF_STATIC_TLS;
5228 case R_PPC64_ADDR64:
5229 if (opd_sym_map != NULL
5230 && rel + 1 < rel_end
5231 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5235 if (h->root.root.string[0] == '.'
5236 && h->root.root.string[1] != 0
5237 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5240 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5245 Elf_Internal_Sym *isym;
5247 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5252 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5253 if (s != NULL && s != sec)
5254 opd_sym_map[rel->r_offset / 8] = s;
5262 case R_PPC64_ADDR14:
5263 case R_PPC64_ADDR14_BRNTAKEN:
5264 case R_PPC64_ADDR14_BRTAKEN:
5265 case R_PPC64_ADDR16:
5266 case R_PPC64_ADDR16_DS:
5267 case R_PPC64_ADDR16_HA:
5268 case R_PPC64_ADDR16_HI:
5269 case R_PPC64_ADDR16_HIGHER:
5270 case R_PPC64_ADDR16_HIGHERA:
5271 case R_PPC64_ADDR16_HIGHEST:
5272 case R_PPC64_ADDR16_HIGHESTA:
5273 case R_PPC64_ADDR16_LO:
5274 case R_PPC64_ADDR16_LO_DS:
5275 case R_PPC64_ADDR24:
5276 case R_PPC64_ADDR32:
5277 case R_PPC64_UADDR16:
5278 case R_PPC64_UADDR32:
5279 case R_PPC64_UADDR64:
5281 if (h != NULL && !info->shared)
5282 /* We may need a copy reloc. */
5285 /* Don't propagate .opd relocs. */
5286 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5289 /* If we are creating a shared library, and this is a reloc
5290 against a global symbol, or a non PC relative reloc
5291 against a local symbol, then we need to copy the reloc
5292 into the shared library. However, if we are linking with
5293 -Bsymbolic, we do not need to copy a reloc against a
5294 global symbol which is defined in an object we are
5295 including in the link (i.e., DEF_REGULAR is set). At
5296 this point we have not seen all the input files, so it is
5297 possible that DEF_REGULAR is not set now but will be set
5298 later (it is never cleared). In case of a weak definition,
5299 DEF_REGULAR may be cleared later by a strong definition in
5300 a shared library. We account for that possibility below by
5301 storing information in the dyn_relocs field of the hash
5302 table entry. A similar situation occurs when creating
5303 shared libraries and symbol visibility changes render the
5306 If on the other hand, we are creating an executable, we
5307 may need to keep relocations for symbols satisfied by a
5308 dynamic library if we manage to avoid copy relocs for the
5312 && (must_be_dyn_reloc (info, r_type)
5314 && (! info->symbolic
5315 || h->root.type == bfd_link_hash_defweak
5316 || !h->def_regular))))
5317 || (ELIMINATE_COPY_RELOCS
5320 && (h->root.type == bfd_link_hash_defweak
5321 || !h->def_regular))
5325 struct ppc_dyn_relocs *p;
5326 struct ppc_dyn_relocs **head;
5328 /* We must copy these reloc types into the output file.
5329 Create a reloc section in dynobj and make room for
5333 sreloc = _bfd_elf_make_dynamic_reloc_section
5334 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5340 /* If this is a global symbol, we count the number of
5341 relocations we need for this symbol. */
5344 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5348 /* Track dynamic relocs needed for local syms too.
5349 We really need local syms available to do this
5353 Elf_Internal_Sym *isym;
5355 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5360 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5364 vpp = &elf_section_data (s)->local_dynrel;
5365 head = (struct ppc_dyn_relocs **) vpp;
5369 if (p == NULL || p->sec != sec)
5371 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5382 if (!must_be_dyn_reloc (info, r_type))
5395 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5396 of the code entry point, and its section. */
5399 opd_entry_value (asection *opd_sec,
5401 asection **code_sec,
5404 bfd *opd_bfd = opd_sec->owner;
5405 Elf_Internal_Rela *relocs;
5406 Elf_Internal_Rela *lo, *hi, *look;
5409 /* No relocs implies we are linking a --just-symbols object. */
5410 if (opd_sec->reloc_count == 0)
5412 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
5413 return (bfd_vma) -1;
5415 if (code_sec != NULL)
5417 asection *sec, *likely = NULL;
5418 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5420 && (sec->flags & SEC_LOAD) != 0
5421 && (sec->flags & SEC_ALLOC) != 0)
5426 if (code_off != NULL)
5427 *code_off = val - likely->vma;
5433 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5435 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5437 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5439 /* Go find the opd reloc at the sym address. */
5441 BFD_ASSERT (lo != NULL);
5442 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5446 look = lo + (hi - lo) / 2;
5447 if (look->r_offset < offset)
5449 else if (look->r_offset > offset)
5453 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5455 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5456 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5458 unsigned long symndx = ELF64_R_SYM (look->r_info);
5461 if (symndx < symtab_hdr->sh_info)
5463 Elf_Internal_Sym *sym;
5465 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5468 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5469 symtab_hdr->sh_info,
5470 0, NULL, NULL, NULL);
5473 symtab_hdr->contents = (bfd_byte *) sym;
5477 val = sym->st_value;
5478 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5479 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5483 struct elf_link_hash_entry **sym_hashes;
5484 struct elf_link_hash_entry *rh;
5486 sym_hashes = elf_sym_hashes (opd_bfd);
5487 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5488 rh = elf_follow_link (rh);
5489 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5490 || rh->root.type == bfd_link_hash_defweak);
5491 val = rh->root.u.def.value;
5492 sec = rh->root.u.def.section;
5494 val += look->r_addend;
5495 if (code_off != NULL)
5497 if (code_sec != NULL)
5499 if (sec != NULL && sec->output_section != NULL)
5500 val += sec->output_section->vma + sec->output_offset;
5509 /* If FDH is a function descriptor symbol, return the associated code
5510 entry symbol if it is defined. Return NULL otherwise. */
5512 static struct ppc_link_hash_entry *
5513 defined_code_entry (struct ppc_link_hash_entry *fdh)
5515 if (fdh->is_func_descriptor)
5517 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5518 if (fh->elf.root.type == bfd_link_hash_defined
5519 || fh->elf.root.type == bfd_link_hash_defweak)
5525 /* If FH is a function code entry symbol, return the associated
5526 function descriptor symbol if it is defined. Return NULL otherwise. */
5528 static struct ppc_link_hash_entry *
5529 defined_func_desc (struct ppc_link_hash_entry *fh)
5532 && fh->oh->is_func_descriptor)
5534 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5535 if (fdh->elf.root.type == bfd_link_hash_defined
5536 || fdh->elf.root.type == bfd_link_hash_defweak)
5542 /* Mark all our entry sym sections, both opd and code section. */
5545 ppc64_elf_gc_keep (struct bfd_link_info *info)
5547 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5548 struct bfd_sym_chain *sym;
5550 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5552 struct ppc_link_hash_entry *eh, *fh;
5555 eh = (struct ppc_link_hash_entry *)
5556 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5559 if (eh->elf.root.type != bfd_link_hash_defined
5560 && eh->elf.root.type != bfd_link_hash_defweak)
5563 fh = defined_code_entry (eh);
5566 sec = fh->elf.root.u.def.section;
5567 sec->flags |= SEC_KEEP;
5569 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5570 && opd_entry_value (eh->elf.root.u.def.section,
5571 eh->elf.root.u.def.value,
5572 &sec, NULL) != (bfd_vma) -1)
5573 sec->flags |= SEC_KEEP;
5575 sec = eh->elf.root.u.def.section;
5576 sec->flags |= SEC_KEEP;
5580 /* Mark sections containing dynamically referenced symbols. When
5581 building shared libraries, we must assume that any visible symbol is
5585 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5587 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5588 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5589 struct ppc_link_hash_entry *fdh;
5591 if (eh->elf.root.type == bfd_link_hash_warning)
5592 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5594 /* Dynamic linking info is on the func descriptor sym. */
5595 fdh = defined_func_desc (eh);
5599 if ((eh->elf.root.type == bfd_link_hash_defined
5600 || eh->elf.root.type == bfd_link_hash_defweak)
5601 && (eh->elf.ref_dynamic
5602 || (!info->executable
5603 && eh->elf.def_regular
5604 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5605 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5608 struct ppc_link_hash_entry *fh;
5610 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5612 /* Function descriptor syms cause the associated
5613 function code sym section to be marked. */
5614 fh = defined_code_entry (eh);
5617 code_sec = fh->elf.root.u.def.section;
5618 code_sec->flags |= SEC_KEEP;
5620 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5621 && opd_entry_value (eh->elf.root.u.def.section,
5622 eh->elf.root.u.def.value,
5623 &code_sec, NULL) != (bfd_vma) -1)
5624 code_sec->flags |= SEC_KEEP;
5630 /* Return the section that should be marked against GC for a given
5634 ppc64_elf_gc_mark_hook (asection *sec,
5635 struct bfd_link_info *info,
5636 Elf_Internal_Rela *rel,
5637 struct elf_link_hash_entry *h,
5638 Elf_Internal_Sym *sym)
5642 /* Syms return NULL if we're marking .opd, so we avoid marking all
5643 function sections, as all functions are referenced in .opd. */
5645 if (get_opd_info (sec) != NULL)
5650 enum elf_ppc64_reloc_type r_type;
5651 struct ppc_link_hash_entry *eh, *fh, *fdh;
5653 r_type = ELF64_R_TYPE (rel->r_info);
5656 case R_PPC64_GNU_VTINHERIT:
5657 case R_PPC64_GNU_VTENTRY:
5661 switch (h->root.type)
5663 case bfd_link_hash_defined:
5664 case bfd_link_hash_defweak:
5665 eh = (struct ppc_link_hash_entry *) h;
5666 fdh = defined_func_desc (eh);
5670 /* Function descriptor syms cause the associated
5671 function code sym section to be marked. */
5672 fh = defined_code_entry (eh);
5675 /* They also mark their opd section. */
5676 eh->elf.root.u.def.section->gc_mark = 1;
5678 rsec = fh->elf.root.u.def.section;
5680 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5681 && opd_entry_value (eh->elf.root.u.def.section,
5682 eh->elf.root.u.def.value,
5683 &rsec, NULL) != (bfd_vma) -1)
5684 eh->elf.root.u.def.section->gc_mark = 1;
5686 rsec = h->root.u.def.section;
5689 case bfd_link_hash_common:
5690 rsec = h->root.u.c.p->section;
5694 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5700 struct _opd_sec_data *opd;
5702 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5703 opd = get_opd_info (rsec);
5704 if (opd != NULL && opd->func_sec != NULL)
5708 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5715 /* Update the .got, .plt. and dynamic reloc reference counts for the
5716 section being removed. */
5719 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5720 asection *sec, const Elf_Internal_Rela *relocs)
5722 struct ppc_link_hash_table *htab;
5723 Elf_Internal_Shdr *symtab_hdr;
5724 struct elf_link_hash_entry **sym_hashes;
5725 struct got_entry **local_got_ents;
5726 const Elf_Internal_Rela *rel, *relend;
5728 if (info->relocatable)
5731 if ((sec->flags & SEC_ALLOC) == 0)
5734 elf_section_data (sec)->local_dynrel = NULL;
5736 htab = ppc_hash_table (info);
5737 symtab_hdr = &elf_symtab_hdr (abfd);
5738 sym_hashes = elf_sym_hashes (abfd);
5739 local_got_ents = elf_local_got_ents (abfd);
5741 relend = relocs + sec->reloc_count;
5742 for (rel = relocs; rel < relend; rel++)
5744 unsigned long r_symndx;
5745 enum elf_ppc64_reloc_type r_type;
5746 struct elf_link_hash_entry *h = NULL;
5749 r_symndx = ELF64_R_SYM (rel->r_info);
5750 r_type = ELF64_R_TYPE (rel->r_info);
5751 if (r_symndx >= symtab_hdr->sh_info)
5753 struct ppc_link_hash_entry *eh;
5754 struct ppc_dyn_relocs **pp;
5755 struct ppc_dyn_relocs *p;
5757 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5758 h = elf_follow_link (h);
5759 eh = (struct ppc_link_hash_entry *) h;
5761 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5764 /* Everything must go for SEC. */
5770 if (is_branch_reloc (r_type))
5772 struct plt_entry **ifunc = NULL;
5775 if (h->type == STT_GNU_IFUNC)
5776 ifunc = &h->plt.plist;
5778 else if (local_got_ents != NULL)
5780 struct plt_entry **local_plt = (struct plt_entry **)
5781 (local_got_ents + symtab_hdr->sh_info);
5782 char *local_got_tls_masks = (char *)
5783 (local_plt + symtab_hdr->sh_info);
5784 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5785 ifunc = local_plt + r_symndx;
5789 struct plt_entry *ent;
5791 for (ent = *ifunc; ent != NULL; ent = ent->next)
5792 if (ent->addend == rel->r_addend)
5796 if (ent->plt.refcount > 0)
5797 ent->plt.refcount -= 1;
5804 case R_PPC64_GOT_TLSLD16:
5805 case R_PPC64_GOT_TLSLD16_LO:
5806 case R_PPC64_GOT_TLSLD16_HI:
5807 case R_PPC64_GOT_TLSLD16_HA:
5808 tls_type = TLS_TLS | TLS_LD;
5811 case R_PPC64_GOT_TLSGD16:
5812 case R_PPC64_GOT_TLSGD16_LO:
5813 case R_PPC64_GOT_TLSGD16_HI:
5814 case R_PPC64_GOT_TLSGD16_HA:
5815 tls_type = TLS_TLS | TLS_GD;
5818 case R_PPC64_GOT_TPREL16_DS:
5819 case R_PPC64_GOT_TPREL16_LO_DS:
5820 case R_PPC64_GOT_TPREL16_HI:
5821 case R_PPC64_GOT_TPREL16_HA:
5822 tls_type = TLS_TLS | TLS_TPREL;
5825 case R_PPC64_GOT_DTPREL16_DS:
5826 case R_PPC64_GOT_DTPREL16_LO_DS:
5827 case R_PPC64_GOT_DTPREL16_HI:
5828 case R_PPC64_GOT_DTPREL16_HA:
5829 tls_type = TLS_TLS | TLS_DTPREL;
5833 case R_PPC64_GOT16_DS:
5834 case R_PPC64_GOT16_HA:
5835 case R_PPC64_GOT16_HI:
5836 case R_PPC64_GOT16_LO:
5837 case R_PPC64_GOT16_LO_DS:
5840 struct got_entry *ent;
5845 ent = local_got_ents[r_symndx];
5847 for (; ent != NULL; ent = ent->next)
5848 if (ent->addend == rel->r_addend
5849 && ent->owner == abfd
5850 && ent->tls_type == tls_type)
5854 if (ent->got.refcount > 0)
5855 ent->got.refcount -= 1;
5859 case R_PPC64_PLT16_HA:
5860 case R_PPC64_PLT16_HI:
5861 case R_PPC64_PLT16_LO:
5865 case R_PPC64_REL14_BRNTAKEN:
5866 case R_PPC64_REL14_BRTAKEN:
5870 struct plt_entry *ent;
5872 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5873 if (ent->addend == rel->r_addend)
5875 if (ent != NULL && ent->plt.refcount > 0)
5876 ent->plt.refcount -= 1;
5887 /* The maximum size of .sfpr. */
5888 #define SFPR_MAX (218*4)
5890 struct sfpr_def_parms
5892 const char name[12];
5893 unsigned char lo, hi;
5894 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5895 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5898 /* Auto-generate _save*, _rest* functions in .sfpr. */
5901 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5903 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5905 size_t len = strlen (parm->name);
5906 bfd_boolean writing = FALSE;
5909 memcpy (sym, parm->name, len);
5912 for (i = parm->lo; i <= parm->hi; i++)
5914 struct elf_link_hash_entry *h;
5916 sym[len + 0] = i / 10 + '0';
5917 sym[len + 1] = i % 10 + '0';
5918 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5922 h->root.type = bfd_link_hash_defined;
5923 h->root.u.def.section = htab->sfpr;
5924 h->root.u.def.value = htab->sfpr->size;
5927 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5929 if (htab->sfpr->contents == NULL)
5931 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5932 if (htab->sfpr->contents == NULL)
5938 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5940 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5942 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5943 htab->sfpr->size = p - htab->sfpr->contents;
5951 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5953 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5958 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5960 p = savegpr0 (abfd, p, r);
5961 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5963 bfd_put_32 (abfd, BLR, p);
5968 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5970 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5975 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5977 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5979 p = restgpr0 (abfd, p, r);
5980 bfd_put_32 (abfd, MTLR_R0, p);
5984 p = restgpr0 (abfd, p, 30);
5985 p = restgpr0 (abfd, p, 31);
5987 bfd_put_32 (abfd, BLR, p);
5992 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5994 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5999 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6001 p = savegpr1 (abfd, p, r);
6002 bfd_put_32 (abfd, BLR, p);
6007 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6009 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6014 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6016 p = restgpr1 (abfd, p, r);
6017 bfd_put_32 (abfd, BLR, p);
6022 savefpr (bfd *abfd, bfd_byte *p, int r)
6024 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6029 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6031 p = savefpr (abfd, p, r);
6032 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6034 bfd_put_32 (abfd, BLR, p);
6039 restfpr (bfd *abfd, bfd_byte *p, int r)
6041 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6046 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6048 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6050 p = restfpr (abfd, p, r);
6051 bfd_put_32 (abfd, MTLR_R0, p);
6055 p = restfpr (abfd, p, 30);
6056 p = restfpr (abfd, p, 31);
6058 bfd_put_32 (abfd, BLR, p);
6063 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6065 p = savefpr (abfd, p, r);
6066 bfd_put_32 (abfd, BLR, p);
6071 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6073 p = restfpr (abfd, p, r);
6074 bfd_put_32 (abfd, BLR, p);
6079 savevr (bfd *abfd, bfd_byte *p, int r)
6081 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6083 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6088 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6090 p = savevr (abfd, p, r);
6091 bfd_put_32 (abfd, BLR, p);
6096 restvr (bfd *abfd, bfd_byte *p, int r)
6098 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6100 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6105 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6107 p = restvr (abfd, p, r);
6108 bfd_put_32 (abfd, BLR, p);
6112 /* Called via elf_link_hash_traverse to transfer dynamic linking
6113 information on function code symbol entries to their corresponding
6114 function descriptor symbol entries. */
6117 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6119 struct bfd_link_info *info;
6120 struct ppc_link_hash_table *htab;
6121 struct plt_entry *ent;
6122 struct ppc_link_hash_entry *fh;
6123 struct ppc_link_hash_entry *fdh;
6124 bfd_boolean force_local;
6126 fh = (struct ppc_link_hash_entry *) h;
6127 if (fh->elf.root.type == bfd_link_hash_indirect)
6130 if (fh->elf.root.type == bfd_link_hash_warning)
6131 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
6134 htab = ppc_hash_table (info);
6136 /* Resolve undefined references to dot-symbols as the value
6137 in the function descriptor, if we have one in a regular object.
6138 This is to satisfy cases like ".quad .foo". Calls to functions
6139 in dynamic objects are handled elsewhere. */
6140 if (fh->elf.root.type == bfd_link_hash_undefweak
6141 && fh->was_undefined
6142 && (fdh = defined_func_desc (fh)) != NULL
6143 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6144 && opd_entry_value (fdh->elf.root.u.def.section,
6145 fdh->elf.root.u.def.value,
6146 &fh->elf.root.u.def.section,
6147 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6149 fh->elf.root.type = fdh->elf.root.type;
6150 fh->elf.forced_local = 1;
6151 fh->elf.def_regular = fdh->elf.def_regular;
6152 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6155 /* If this is a function code symbol, transfer dynamic linking
6156 information to the function descriptor symbol. */
6160 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6161 if (ent->plt.refcount > 0)
6164 || fh->elf.root.root.string[0] != '.'
6165 || fh->elf.root.root.string[1] == '\0')
6168 /* Find the corresponding function descriptor symbol. Create it
6169 as undefined if necessary. */
6171 fdh = lookup_fdh (fh, htab);
6173 && !info->executable
6174 && (fh->elf.root.type == bfd_link_hash_undefined
6175 || fh->elf.root.type == bfd_link_hash_undefweak))
6177 fdh = make_fdh (info, fh);
6182 /* Fake function descriptors are made undefweak. If the function
6183 code symbol is strong undefined, make the fake sym the same.
6184 If the function code symbol is defined, then force the fake
6185 descriptor local; We can't support overriding of symbols in a
6186 shared library on a fake descriptor. */
6190 && fdh->elf.root.type == bfd_link_hash_undefweak)
6192 if (fh->elf.root.type == bfd_link_hash_undefined)
6194 fdh->elf.root.type = bfd_link_hash_undefined;
6195 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6197 else if (fh->elf.root.type == bfd_link_hash_defined
6198 || fh->elf.root.type == bfd_link_hash_defweak)
6200 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6205 && !fdh->elf.forced_local
6206 && (!info->executable
6207 || fdh->elf.def_dynamic
6208 || fdh->elf.ref_dynamic
6209 || (fdh->elf.root.type == bfd_link_hash_undefweak
6210 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6212 if (fdh->elf.dynindx == -1)
6213 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6215 fdh->elf.ref_regular |= fh->elf.ref_regular;
6216 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6217 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6218 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6219 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6221 move_plt_plist (fh, fdh);
6222 fdh->elf.needs_plt = 1;
6224 fdh->is_func_descriptor = 1;
6229 /* Now that the info is on the function descriptor, clear the
6230 function code sym info. Any function code syms for which we
6231 don't have a definition in a regular file, we force local.
6232 This prevents a shared library from exporting syms that have
6233 been imported from another library. Function code syms that
6234 are really in the library we must leave global to prevent the
6235 linker dragging in a definition from a static library. */
6236 force_local = (!fh->elf.def_regular
6238 || !fdh->elf.def_regular
6239 || fdh->elf.forced_local);
6240 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6245 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6246 this hook to a) provide some gcc support functions, and b) transfer
6247 dynamic linking information gathered so far on function code symbol
6248 entries, to their corresponding function descriptor symbol entries. */
6251 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6252 struct bfd_link_info *info)
6254 struct ppc_link_hash_table *htab;
6256 const struct sfpr_def_parms funcs[] =
6258 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6259 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6260 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6261 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6262 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6263 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6264 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6265 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6266 { "._savef", 14, 31, savefpr, savefpr1_tail },
6267 { "._restf", 14, 31, restfpr, restfpr1_tail },
6268 { "_savevr_", 20, 31, savevr, savevr_tail },
6269 { "_restvr_", 20, 31, restvr, restvr_tail }
6272 htab = ppc_hash_table (info);
6273 if (htab->sfpr == NULL)
6274 /* We don't have any relocs. */
6277 /* Provide any missing _save* and _rest* functions. */
6278 htab->sfpr->size = 0;
6279 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6280 if (!sfpr_define (info, &funcs[i]))
6283 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6285 if (htab->sfpr->size == 0)
6286 htab->sfpr->flags |= SEC_EXCLUDE;
6291 /* Adjust a symbol defined by a dynamic object and referenced by a
6292 regular object. The current definition is in some section of the
6293 dynamic object, but we're not including those sections. We have to
6294 change the definition to something the rest of the link can
6298 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6299 struct elf_link_hash_entry *h)
6301 struct ppc_link_hash_table *htab;
6304 htab = ppc_hash_table (info);
6306 /* Deal with function syms. */
6307 if (h->type == STT_FUNC
6308 || h->type == STT_GNU_IFUNC
6311 /* Clear procedure linkage table information for any symbol that
6312 won't need a .plt entry. */
6313 struct plt_entry *ent;
6314 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6315 if (ent->plt.refcount > 0)
6318 || (h->type != STT_GNU_IFUNC
6319 && (SYMBOL_CALLS_LOCAL (info, h)
6320 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6321 && h->root.type == bfd_link_hash_undefweak))))
6323 h->plt.plist = NULL;
6328 h->plt.plist = NULL;
6330 /* If this is a weak symbol, and there is a real definition, the
6331 processor independent code will have arranged for us to see the
6332 real definition first, and we can just use the same value. */
6333 if (h->u.weakdef != NULL)
6335 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6336 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6337 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6338 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6339 if (ELIMINATE_COPY_RELOCS)
6340 h->non_got_ref = h->u.weakdef->non_got_ref;
6344 /* If we are creating a shared library, we must presume that the
6345 only references to the symbol are via the global offset table.
6346 For such cases we need not do anything here; the relocations will
6347 be handled correctly by relocate_section. */
6351 /* If there are no references to this symbol that do not use the
6352 GOT, we don't need to generate a copy reloc. */
6353 if (!h->non_got_ref)
6356 /* Don't generate a copy reloc for symbols defined in the executable. */
6357 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6360 if (ELIMINATE_COPY_RELOCS)
6362 struct ppc_link_hash_entry * eh;
6363 struct ppc_dyn_relocs *p;
6365 eh = (struct ppc_link_hash_entry *) h;
6366 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6368 s = p->sec->output_section;
6369 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6373 /* If we didn't find any dynamic relocs in read-only sections, then
6374 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6382 if (h->plt.plist != NULL)
6384 /* We should never get here, but unfortunately there are versions
6385 of gcc out there that improperly (for this ABI) put initialized
6386 function pointers, vtable refs and suchlike in read-only
6387 sections. Allow them to proceed, but warn that this might
6388 break at runtime. */
6389 (*_bfd_error_handler)
6390 (_("copy reloc against `%s' requires lazy plt linking; "
6391 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6392 h->root.root.string);
6395 /* This is a reference to a symbol defined by a dynamic object which
6396 is not a function. */
6400 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6401 h->root.root.string);
6405 /* We must allocate the symbol in our .dynbss section, which will
6406 become part of the .bss section of the executable. There will be
6407 an entry for this symbol in the .dynsym section. The dynamic
6408 object will contain position independent code, so all references
6409 from the dynamic object to this symbol will go through the global
6410 offset table. The dynamic linker will use the .dynsym entry to
6411 determine the address it must put in the global offset table, so
6412 both the dynamic object and the regular object will refer to the
6413 same memory location for the variable. */
6415 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6416 to copy the initial value out of the dynamic object and into the
6417 runtime process image. We need to remember the offset into the
6418 .rela.bss section we are going to use. */
6419 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6421 htab->relbss->size += sizeof (Elf64_External_Rela);
6427 return _bfd_elf_adjust_dynamic_copy (h, s);
6430 /* If given a function descriptor symbol, hide both the function code
6431 sym and the descriptor. */
6433 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6434 struct elf_link_hash_entry *h,
6435 bfd_boolean force_local)
6437 struct ppc_link_hash_entry *eh;
6438 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6440 eh = (struct ppc_link_hash_entry *) h;
6441 if (eh->is_func_descriptor)
6443 struct ppc_link_hash_entry *fh = eh->oh;
6448 struct ppc_link_hash_table *htab;
6451 /* We aren't supposed to use alloca in BFD because on
6452 systems which do not have alloca the version in libiberty
6453 calls xmalloc, which might cause the program to crash
6454 when it runs out of memory. This function doesn't have a
6455 return status, so there's no way to gracefully return an
6456 error. So cheat. We know that string[-1] can be safely
6457 accessed; It's either a string in an ELF string table,
6458 or allocated in an objalloc structure. */
6460 p = eh->elf.root.root.string - 1;
6463 htab = ppc_hash_table (info);
6464 fh = (struct ppc_link_hash_entry *)
6465 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6468 /* Unfortunately, if it so happens that the string we were
6469 looking for was allocated immediately before this string,
6470 then we overwrote the string terminator. That's the only
6471 reason the lookup should fail. */
6474 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6475 while (q >= eh->elf.root.root.string && *q == *p)
6477 if (q < eh->elf.root.root.string && *p == '.')
6478 fh = (struct ppc_link_hash_entry *)
6479 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6488 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6493 get_sym_h (struct elf_link_hash_entry **hp,
6494 Elf_Internal_Sym **symp,
6497 Elf_Internal_Sym **locsymsp,
6498 unsigned long r_symndx,
6501 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6503 if (r_symndx >= symtab_hdr->sh_info)
6505 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6506 struct elf_link_hash_entry *h;
6508 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6509 h = elf_follow_link (h);
6517 if (symsecp != NULL)
6519 asection *symsec = NULL;
6520 if (h->root.type == bfd_link_hash_defined
6521 || h->root.type == bfd_link_hash_defweak)
6522 symsec = h->root.u.def.section;
6526 if (tls_maskp != NULL)
6528 struct ppc_link_hash_entry *eh;
6530 eh = (struct ppc_link_hash_entry *) h;
6531 *tls_maskp = &eh->tls_mask;
6536 Elf_Internal_Sym *sym;
6537 Elf_Internal_Sym *locsyms = *locsymsp;
6539 if (locsyms == NULL)
6541 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6542 if (locsyms == NULL)
6543 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6544 symtab_hdr->sh_info,
6545 0, NULL, NULL, NULL);
6546 if (locsyms == NULL)
6548 *locsymsp = locsyms;
6550 sym = locsyms + r_symndx;
6558 if (symsecp != NULL)
6559 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6561 if (tls_maskp != NULL)
6563 struct got_entry **lgot_ents;
6567 lgot_ents = elf_local_got_ents (ibfd);
6568 if (lgot_ents != NULL)
6570 struct plt_entry **local_plt = (struct plt_entry **)
6571 (lgot_ents + symtab_hdr->sh_info);
6572 char *lgot_masks = (char *)
6573 (local_plt + symtab_hdr->sh_info);
6574 tls_mask = &lgot_masks[r_symndx];
6576 *tls_maskp = tls_mask;
6582 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6583 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6584 type suitable for optimization, and 1 otherwise. */
6587 get_tls_mask (char **tls_maskp,
6588 unsigned long *toc_symndx,
6589 bfd_vma *toc_addend,
6590 Elf_Internal_Sym **locsymsp,
6591 const Elf_Internal_Rela *rel,
6594 unsigned long r_symndx;
6596 struct elf_link_hash_entry *h;
6597 Elf_Internal_Sym *sym;
6601 r_symndx = ELF64_R_SYM (rel->r_info);
6602 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6605 if ((*tls_maskp != NULL && **tls_maskp != 0)
6607 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6610 /* Look inside a TOC section too. */
6613 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6614 off = h->root.u.def.value;
6617 off = sym->st_value;
6618 off += rel->r_addend;
6619 BFD_ASSERT (off % 8 == 0);
6620 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6621 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6622 if (toc_symndx != NULL)
6623 *toc_symndx = r_symndx;
6624 if (toc_addend != NULL)
6625 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6626 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6629 || ((h->root.type == bfd_link_hash_defined
6630 || h->root.type == bfd_link_hash_defweak)
6631 && !h->def_dynamic))
6632 && (next_r == -1 || next_r == -2))
6637 /* Adjust all global syms defined in opd sections. In gcc generated
6638 code for the old ABI, these will already have been done. */
6641 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6643 struct ppc_link_hash_entry *eh;
6645 struct _opd_sec_data *opd;
6647 if (h->root.type == bfd_link_hash_indirect)
6650 if (h->root.type == bfd_link_hash_warning)
6651 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6653 if (h->root.type != bfd_link_hash_defined
6654 && h->root.type != bfd_link_hash_defweak)
6657 eh = (struct ppc_link_hash_entry *) h;
6658 if (eh->adjust_done)
6661 sym_sec = eh->elf.root.u.def.section;
6662 opd = get_opd_info (sym_sec);
6663 if (opd != NULL && opd->adjust != NULL)
6665 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6668 /* This entry has been deleted. */
6669 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6672 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6673 if (elf_discarded_section (dsec))
6675 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6679 eh->elf.root.u.def.value = 0;
6680 eh->elf.root.u.def.section = dsec;
6683 eh->elf.root.u.def.value += adjust;
6684 eh->adjust_done = 1;
6689 /* Handles decrementing dynamic reloc counts for the reloc specified by
6690 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6691 have already been determined. */
6694 dec_dynrel_count (bfd_vma r_info,
6696 struct bfd_link_info *info,
6697 Elf_Internal_Sym **local_syms,
6698 struct elf_link_hash_entry *h,
6701 enum elf_ppc64_reloc_type r_type;
6702 struct ppc_dyn_relocs *p;
6703 struct ppc_dyn_relocs **pp;
6705 /* Can this reloc be dynamic? This switch, and later tests here
6706 should be kept in sync with the code in check_relocs. */
6707 r_type = ELF64_R_TYPE (r_info);
6713 case R_PPC64_TPREL16:
6714 case R_PPC64_TPREL16_LO:
6715 case R_PPC64_TPREL16_HI:
6716 case R_PPC64_TPREL16_HA:
6717 case R_PPC64_TPREL16_DS:
6718 case R_PPC64_TPREL16_LO_DS:
6719 case R_PPC64_TPREL16_HIGHER:
6720 case R_PPC64_TPREL16_HIGHERA:
6721 case R_PPC64_TPREL16_HIGHEST:
6722 case R_PPC64_TPREL16_HIGHESTA:
6726 case R_PPC64_TPREL64:
6727 case R_PPC64_DTPMOD64:
6728 case R_PPC64_DTPREL64:
6729 case R_PPC64_ADDR64:
6733 case R_PPC64_ADDR14:
6734 case R_PPC64_ADDR14_BRNTAKEN:
6735 case R_PPC64_ADDR14_BRTAKEN:
6736 case R_PPC64_ADDR16:
6737 case R_PPC64_ADDR16_DS:
6738 case R_PPC64_ADDR16_HA:
6739 case R_PPC64_ADDR16_HI:
6740 case R_PPC64_ADDR16_HIGHER:
6741 case R_PPC64_ADDR16_HIGHERA:
6742 case R_PPC64_ADDR16_HIGHEST:
6743 case R_PPC64_ADDR16_HIGHESTA:
6744 case R_PPC64_ADDR16_LO:
6745 case R_PPC64_ADDR16_LO_DS:
6746 case R_PPC64_ADDR24:
6747 case R_PPC64_ADDR32:
6748 case R_PPC64_UADDR16:
6749 case R_PPC64_UADDR32:
6750 case R_PPC64_UADDR64:
6755 if (local_syms != NULL)
6757 unsigned long r_symndx;
6758 Elf_Internal_Sym *sym;
6759 bfd *ibfd = sec->owner;
6761 r_symndx = ELF64_R_SYM (r_info);
6762 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6767 && (must_be_dyn_reloc (info, r_type)
6770 || h->root.type == bfd_link_hash_defweak
6771 || !h->def_regular))))
6772 || (ELIMINATE_COPY_RELOCS
6775 && (h->root.type == bfd_link_hash_defweak
6776 || !h->def_regular)))
6782 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6785 if (sym_sec != NULL)
6787 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6788 pp = (struct ppc_dyn_relocs **) vpp;
6792 void *vpp = &elf_section_data (sec)->local_dynrel;
6793 pp = (struct ppc_dyn_relocs **) vpp;
6796 /* elf_gc_sweep may have already removed all dyn relocs associated
6797 with local syms for a given section. Don't report a dynreloc
6803 while ((p = *pp) != NULL)
6807 if (!must_be_dyn_reloc (info, r_type))
6817 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6819 bfd_set_error (bfd_error_bad_value);
6823 /* Remove unused Official Procedure Descriptor entries. Currently we
6824 only remove those associated with functions in discarded link-once
6825 sections, or weakly defined functions that have been overridden. It
6826 would be possible to remove many more entries for statically linked
6830 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6831 bfd_boolean non_overlapping)
6834 bfd_boolean some_edited = FALSE;
6835 asection *need_pad = NULL;
6837 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6840 Elf_Internal_Rela *relstart, *rel, *relend;
6841 Elf_Internal_Shdr *symtab_hdr;
6842 Elf_Internal_Sym *local_syms;
6843 struct elf_link_hash_entry **sym_hashes;
6845 struct _opd_sec_data *opd;
6846 bfd_boolean need_edit, add_aux_fields;
6847 bfd_size_type cnt_16b = 0;
6849 sec = bfd_get_section_by_name (ibfd, ".opd");
6850 if (sec == NULL || sec->size == 0)
6853 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6856 if (sec->output_section == bfd_abs_section_ptr)
6859 /* Look through the section relocs. */
6860 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6864 symtab_hdr = &elf_symtab_hdr (ibfd);
6865 sym_hashes = elf_sym_hashes (ibfd);
6867 /* Read the relocations. */
6868 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6870 if (relstart == NULL)
6873 /* First run through the relocs to check they are sane, and to
6874 determine whether we need to edit this opd section. */
6878 relend = relstart + sec->reloc_count;
6879 for (rel = relstart; rel < relend; )
6881 enum elf_ppc64_reloc_type r_type;
6882 unsigned long r_symndx;
6884 struct elf_link_hash_entry *h;
6885 Elf_Internal_Sym *sym;
6887 /* .opd contains a regular array of 16 or 24 byte entries. We're
6888 only interested in the reloc pointing to a function entry
6890 if (rel->r_offset != offset
6891 || rel + 1 >= relend
6892 || (rel + 1)->r_offset != offset + 8)
6894 /* If someone messes with .opd alignment then after a
6895 "ld -r" we might have padding in the middle of .opd.
6896 Also, there's nothing to prevent someone putting
6897 something silly in .opd with the assembler. No .opd
6898 optimization for them! */
6900 (*_bfd_error_handler)
6901 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6906 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6907 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6909 (*_bfd_error_handler)
6910 (_("%B: unexpected reloc type %u in .opd section"),
6916 r_symndx = ELF64_R_SYM (rel->r_info);
6917 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6921 if (sym_sec == NULL || sym_sec->owner == NULL)
6923 const char *sym_name;
6925 sym_name = h->root.root.string;
6927 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6930 (*_bfd_error_handler)
6931 (_("%B: undefined sym `%s' in .opd section"),
6937 /* opd entries are always for functions defined in the
6938 current input bfd. If the symbol isn't defined in the
6939 input bfd, then we won't be using the function in this
6940 bfd; It must be defined in a linkonce section in another
6941 bfd, or is weak. It's also possible that we are
6942 discarding the function due to a linker script /DISCARD/,
6943 which we test for via the output_section. */
6944 if (sym_sec->owner != ibfd
6945 || sym_sec->output_section == bfd_abs_section_ptr)
6950 || (rel + 1 == relend && rel->r_offset == offset + 16))
6952 if (sec->size == offset + 24)
6957 if (rel == relend && sec->size == offset + 16)
6965 if (rel->r_offset == offset + 24)
6967 else if (rel->r_offset != offset + 16)
6969 else if (rel + 1 < relend
6970 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6971 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6976 else if (rel + 2 < relend
6977 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6978 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6987 add_aux_fields = non_overlapping && cnt_16b > 0;
6989 if (need_edit || add_aux_fields)
6991 Elf_Internal_Rela *write_rel;
6992 bfd_byte *rptr, *wptr;
6993 bfd_byte *new_contents;
6998 new_contents = NULL;
6999 amt = sec->size * sizeof (long) / 8;
7000 opd = &ppc64_elf_section_data (sec)->u.opd;
7001 opd->adjust = bfd_zalloc (obfd, amt);
7002 if (opd->adjust == NULL)
7004 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7006 /* This seems a waste of time as input .opd sections are all
7007 zeros as generated by gcc, but I suppose there's no reason
7008 this will always be so. We might start putting something in
7009 the third word of .opd entries. */
7010 if ((sec->flags & SEC_IN_MEMORY) == 0)
7013 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7018 if (local_syms != NULL
7019 && symtab_hdr->contents != (unsigned char *) local_syms)
7021 if (elf_section_data (sec)->relocs != relstart)
7025 sec->contents = loc;
7026 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7029 elf_section_data (sec)->relocs = relstart;
7031 new_contents = sec->contents;
7034 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7035 if (new_contents == NULL)
7039 wptr = new_contents;
7040 rptr = sec->contents;
7042 write_rel = relstart;
7046 for (rel = relstart; rel < relend; rel++)
7048 unsigned long r_symndx;
7050 struct elf_link_hash_entry *h;
7051 Elf_Internal_Sym *sym;
7053 r_symndx = ELF64_R_SYM (rel->r_info);
7054 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7058 if (rel->r_offset == offset)
7060 struct ppc_link_hash_entry *fdh = NULL;
7062 /* See if the .opd entry is full 24 byte or
7063 16 byte (with fd_aux entry overlapped with next
7066 if ((rel + 2 == relend && sec->size == offset + 16)
7067 || (rel + 3 < relend
7068 && rel[2].r_offset == offset + 16
7069 && rel[3].r_offset == offset + 24
7070 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7071 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7075 && h->root.root.string[0] == '.')
7077 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7078 ppc_hash_table (info));
7080 && fdh->elf.root.type != bfd_link_hash_defined
7081 && fdh->elf.root.type != bfd_link_hash_defweak)
7085 skip = (sym_sec->owner != ibfd
7086 || sym_sec->output_section == bfd_abs_section_ptr);
7089 if (fdh != NULL && sym_sec->owner == ibfd)
7091 /* Arrange for the function descriptor sym
7093 fdh->elf.root.u.def.value = 0;
7094 fdh->elf.root.u.def.section = sym_sec;
7096 opd->adjust[rel->r_offset / 8] = -1;
7100 /* We'll be keeping this opd entry. */
7104 /* Redefine the function descriptor symbol to
7105 this location in the opd section. It is
7106 necessary to update the value here rather
7107 than using an array of adjustments as we do
7108 for local symbols, because various places
7109 in the generic ELF code use the value
7110 stored in u.def.value. */
7111 fdh->elf.root.u.def.value = wptr - new_contents;
7112 fdh->adjust_done = 1;
7115 /* Local syms are a bit tricky. We could
7116 tweak them as they can be cached, but
7117 we'd need to look through the local syms
7118 for the function descriptor sym which we
7119 don't have at the moment. So keep an
7120 array of adjustments. */
7121 opd->adjust[rel->r_offset / 8]
7122 = (wptr - new_contents) - (rptr - sec->contents);
7125 memcpy (wptr, rptr, opd_ent_size);
7126 wptr += opd_ent_size;
7127 if (add_aux_fields && opd_ent_size == 16)
7129 memset (wptr, '\0', 8);
7133 rptr += opd_ent_size;
7134 offset += opd_ent_size;
7140 && !info->relocatable
7141 && !dec_dynrel_count (rel->r_info, sec, info,
7147 /* We need to adjust any reloc offsets to point to the
7148 new opd entries. While we're at it, we may as well
7149 remove redundant relocs. */
7150 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7151 if (write_rel != rel)
7152 memcpy (write_rel, rel, sizeof (*rel));
7157 sec->size = wptr - new_contents;
7158 sec->reloc_count = write_rel - relstart;
7161 free (sec->contents);
7162 sec->contents = new_contents;
7165 /* Fudge the header size too, as this is used later in
7166 elf_bfd_final_link if we are emitting relocs. */
7167 elf_section_data (sec)->rel_hdr.sh_size
7168 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
7169 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
7172 else if (elf_section_data (sec)->relocs != relstart)
7175 if (local_syms != NULL
7176 && symtab_hdr->contents != (unsigned char *) local_syms)
7178 if (!info->keep_memory)
7181 symtab_hdr->contents = (unsigned char *) local_syms;
7186 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7188 /* If we are doing a final link and the last .opd entry is just 16 byte
7189 long, add a 8 byte padding after it. */
7190 if (need_pad != NULL && !info->relocatable)
7194 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7196 BFD_ASSERT (need_pad->size > 0);
7198 p = bfd_malloc (need_pad->size + 8);
7202 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7203 p, 0, need_pad->size))
7206 need_pad->contents = p;
7207 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7211 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7215 need_pad->contents = p;
7218 memset (need_pad->contents + need_pad->size, 0, 8);
7219 need_pad->size += 8;
7225 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7228 ppc64_elf_tls_setup (bfd *obfd,
7229 struct bfd_link_info *info,
7230 int no_tls_get_addr_opt)
7232 struct ppc_link_hash_table *htab;
7234 htab = ppc_hash_table (info);
7235 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7236 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7237 FALSE, FALSE, TRUE));
7238 /* Move dynamic linking info to the function descriptor sym. */
7239 if (htab->tls_get_addr != NULL)
7240 func_desc_adjust (&htab->tls_get_addr->elf, info);
7241 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7242 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7243 FALSE, FALSE, TRUE));
7244 if (!no_tls_get_addr_opt)
7246 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7248 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7249 FALSE, FALSE, TRUE);
7251 func_desc_adjust (opt, info);
7252 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7253 FALSE, FALSE, TRUE);
7255 && (opt_fd->root.type == bfd_link_hash_defined
7256 || opt_fd->root.type == bfd_link_hash_defweak))
7258 /* If glibc supports an optimized __tls_get_addr call stub,
7259 signalled by the presence of __tls_get_addr_opt, and we'll
7260 be calling __tls_get_addr via a plt call stub, then
7261 make __tls_get_addr point to __tls_get_addr_opt. */
7262 tga_fd = &htab->tls_get_addr_fd->elf;
7263 if (htab->elf.dynamic_sections_created
7265 && (tga_fd->type == STT_FUNC
7266 || tga_fd->needs_plt)
7267 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7268 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7269 && tga_fd->root.type == bfd_link_hash_undefweak)))
7271 struct plt_entry *ent;
7273 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7274 if (ent->plt.refcount > 0)
7278 tga_fd->root.type = bfd_link_hash_indirect;
7279 tga_fd->root.u.i.link = &opt_fd->root;
7280 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7281 if (opt_fd->dynindx != -1)
7283 /* Use __tls_get_addr_opt in dynamic relocations. */
7284 opt_fd->dynindx = -1;
7285 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7286 opt_fd->dynstr_index);
7287 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7290 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7291 tga = &htab->tls_get_addr->elf;
7292 if (opt != NULL && tga != NULL)
7294 tga->root.type = bfd_link_hash_indirect;
7295 tga->root.u.i.link = &opt->root;
7296 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7297 _bfd_elf_link_hash_hide_symbol (info, opt,
7299 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7301 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7302 htab->tls_get_addr_fd->is_func_descriptor = 1;
7303 if (htab->tls_get_addr != NULL)
7305 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7306 htab->tls_get_addr->is_func = 1;
7312 no_tls_get_addr_opt = TRUE;
7314 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7315 return _bfd_elf_tls_setup (obfd, info);
7318 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7322 branch_reloc_hash_match (const bfd *ibfd,
7323 const Elf_Internal_Rela *rel,
7324 const struct ppc_link_hash_entry *hash1,
7325 const struct ppc_link_hash_entry *hash2)
7327 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7328 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7329 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7331 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7333 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7334 struct elf_link_hash_entry *h;
7336 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7337 h = elf_follow_link (h);
7338 if (h == &hash1->elf || h == &hash2->elf)
7344 /* Run through all the TLS relocs looking for optimization
7345 opportunities. The linker has been hacked (see ppc64elf.em) to do
7346 a preliminary section layout so that we know the TLS segment
7347 offsets. We can't optimize earlier because some optimizations need
7348 to know the tp offset, and we need to optimize before allocating
7349 dynamic relocations. */
7352 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7356 struct ppc_link_hash_table *htab;
7359 if (info->relocatable || !info->executable)
7362 htab = ppc_hash_table (info);
7363 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7365 Elf_Internal_Sym *locsyms = NULL;
7366 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7367 unsigned char *toc_ref = NULL;
7369 /* Look at all the sections for this file. Make two passes over
7370 the relocs. On the first pass, mark toc entries involved
7371 with tls relocs, and check that tls relocs involved in
7372 setting up a tls_get_addr call are indeed followed by such a
7373 call. If they are not, exclude them from the optimizations
7374 done on the second pass. */
7375 for (pass = 0; pass < 2; ++pass)
7376 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7377 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7379 Elf_Internal_Rela *relstart, *rel, *relend;
7381 /* Read the relocations. */
7382 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7384 if (relstart == NULL)
7387 relend = relstart + sec->reloc_count;
7388 for (rel = relstart; rel < relend; rel++)
7390 enum elf_ppc64_reloc_type r_type;
7391 unsigned long r_symndx;
7392 struct elf_link_hash_entry *h;
7393 Elf_Internal_Sym *sym;
7396 char tls_set, tls_clear, tls_type = 0;
7398 bfd_boolean ok_tprel, is_local;
7399 long toc_ref_index = 0;
7400 int expecting_tls_get_addr = 0;
7402 r_symndx = ELF64_R_SYM (rel->r_info);
7403 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7407 if (elf_section_data (sec)->relocs != relstart)
7409 if (toc_ref != NULL)
7412 && (elf_symtab_hdr (ibfd).contents
7413 != (unsigned char *) locsyms))
7420 if (h->root.type == bfd_link_hash_defined
7421 || h->root.type == bfd_link_hash_defweak)
7422 value = h->root.u.def.value;
7423 else if (h->root.type == bfd_link_hash_undefweak)
7429 /* Symbols referenced by TLS relocs must be of type
7430 STT_TLS. So no need for .opd local sym adjust. */
7431 value = sym->st_value;
7440 && h->root.type == bfd_link_hash_undefweak)
7444 value += sym_sec->output_offset;
7445 value += sym_sec->output_section->vma;
7446 value -= htab->elf.tls_sec->vma;
7447 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7448 < (bfd_vma) 1 << 32);
7452 r_type = ELF64_R_TYPE (rel->r_info);
7455 case R_PPC64_GOT_TLSLD16:
7456 case R_PPC64_GOT_TLSLD16_LO:
7457 expecting_tls_get_addr = 1;
7460 case R_PPC64_GOT_TLSLD16_HI:
7461 case R_PPC64_GOT_TLSLD16_HA:
7462 /* These relocs should never be against a symbol
7463 defined in a shared lib. Leave them alone if
7464 that turns out to be the case. */
7471 tls_type = TLS_TLS | TLS_LD;
7474 case R_PPC64_GOT_TLSGD16:
7475 case R_PPC64_GOT_TLSGD16_LO:
7476 expecting_tls_get_addr = 1;
7479 case R_PPC64_GOT_TLSGD16_HI:
7480 case R_PPC64_GOT_TLSGD16_HA:
7486 tls_set = TLS_TLS | TLS_TPRELGD;
7488 tls_type = TLS_TLS | TLS_GD;
7491 case R_PPC64_GOT_TPREL16_DS:
7492 case R_PPC64_GOT_TPREL16_LO_DS:
7493 case R_PPC64_GOT_TPREL16_HI:
7494 case R_PPC64_GOT_TPREL16_HA:
7499 tls_clear = TLS_TPREL;
7500 tls_type = TLS_TLS | TLS_TPREL;
7506 case R_PPC64_TOC16_LO:
7510 if (sym_sec == NULL || sym_sec != toc)
7513 /* Mark this toc entry as referenced by a TLS
7514 code sequence. We can do that now in the
7515 case of R_PPC64_TLS, and after checking for
7516 tls_get_addr for the TOC16 relocs. */
7517 if (toc_ref == NULL)
7519 toc_ref = bfd_zmalloc (toc->size / 8);
7520 if (toc_ref == NULL)
7524 value = h->root.u.def.value;
7526 value = sym->st_value;
7527 value += rel->r_addend;
7528 BFD_ASSERT (value < toc->size && value % 8 == 0);
7529 toc_ref_index = value / 8;
7530 if (r_type == R_PPC64_TLS
7531 || r_type == R_PPC64_TLSGD
7532 || r_type == R_PPC64_TLSLD)
7534 toc_ref[toc_ref_index] = 1;
7538 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7543 expecting_tls_get_addr = 2;
7546 case R_PPC64_TPREL64:
7550 || !toc_ref[rel->r_offset / 8])
7555 tls_set = TLS_EXPLICIT;
7556 tls_clear = TLS_TPREL;
7561 case R_PPC64_DTPMOD64:
7565 || !toc_ref[rel->r_offset / 8])
7567 if (rel + 1 < relend
7569 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7570 && rel[1].r_offset == rel->r_offset + 8)
7574 tls_set = TLS_EXPLICIT | TLS_GD;
7577 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7586 tls_set = TLS_EXPLICIT;
7597 if (!expecting_tls_get_addr
7598 || !sec->has_tls_get_addr_call)
7601 if (rel + 1 < relend
7602 && branch_reloc_hash_match (ibfd, rel + 1,
7604 htab->tls_get_addr_fd))
7606 if (expecting_tls_get_addr == 2)
7608 /* Check for toc tls entries. */
7612 retval = get_tls_mask (&toc_tls, NULL, NULL,
7617 if (retval > 1 && toc_tls != NULL)
7618 toc_ref[toc_ref_index] = 1;
7623 if (expecting_tls_get_addr != 1)
7626 /* Uh oh, we didn't find the expected call. We
7627 could just mark this symbol to exclude it
7628 from tls optimization but it's safer to skip
7629 the entire section. */
7630 sec->has_tls_reloc = 0;
7634 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7636 struct plt_entry *ent;
7637 for (ent = htab->tls_get_addr->elf.plt.plist;
7640 if (ent->addend == 0)
7642 if (ent->plt.refcount > 0)
7644 ent->plt.refcount -= 1;
7645 expecting_tls_get_addr = 0;
7651 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7653 struct plt_entry *ent;
7654 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7657 if (ent->addend == 0)
7659 if (ent->plt.refcount > 0)
7660 ent->plt.refcount -= 1;
7668 if ((tls_set & TLS_EXPLICIT) == 0)
7670 struct got_entry *ent;
7672 /* Adjust got entry for this reloc. */
7676 ent = elf_local_got_ents (ibfd)[r_symndx];
7678 for (; ent != NULL; ent = ent->next)
7679 if (ent->addend == rel->r_addend
7680 && ent->owner == ibfd
7681 && ent->tls_type == tls_type)
7688 /* We managed to get rid of a got entry. */
7689 if (ent->got.refcount > 0)
7690 ent->got.refcount -= 1;
7695 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7696 we'll lose one or two dyn relocs. */
7697 if (!dec_dynrel_count (rel->r_info, sec, info,
7701 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7703 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7709 *tls_mask |= tls_set;
7710 *tls_mask &= ~tls_clear;
7713 if (elf_section_data (sec)->relocs != relstart)
7717 if (toc_ref != NULL)
7721 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7723 if (!info->keep_memory)
7726 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7732 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7733 the values of any global symbols in a toc section that has been
7734 edited. Globals in toc sections should be a rarity, so this function
7735 sets a flag if any are found in toc sections other than the one just
7736 edited, so that futher hash table traversals can be avoided. */
7738 struct adjust_toc_info
7741 unsigned long *skip;
7742 bfd_boolean global_toc_syms;
7746 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7748 struct ppc_link_hash_entry *eh;
7749 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7751 if (h->root.type == bfd_link_hash_indirect)
7754 if (h->root.type == bfd_link_hash_warning)
7755 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7757 if (h->root.type != bfd_link_hash_defined
7758 && h->root.type != bfd_link_hash_defweak)
7761 eh = (struct ppc_link_hash_entry *) h;
7762 if (eh->adjust_done)
7765 if (eh->elf.root.u.def.section == toc_inf->toc)
7767 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7768 if (skip != (unsigned long) -1)
7769 eh->elf.root.u.def.value -= skip;
7772 (*_bfd_error_handler)
7773 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7774 eh->elf.root.u.def.section = &bfd_abs_section;
7775 eh->elf.root.u.def.value = 0;
7777 eh->adjust_done = 1;
7779 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7780 toc_inf->global_toc_syms = TRUE;
7785 /* Examine all relocs referencing .toc sections in order to remove
7786 unused .toc entries. */
7789 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7792 struct adjust_toc_info toc_inf;
7794 toc_inf.global_toc_syms = TRUE;
7795 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7797 asection *toc, *sec;
7798 Elf_Internal_Shdr *symtab_hdr;
7799 Elf_Internal_Sym *local_syms;
7800 struct elf_link_hash_entry **sym_hashes;
7801 Elf_Internal_Rela *relstart, *rel;
7802 unsigned long *skip, *drop;
7803 unsigned char *used;
7804 unsigned char *keep, last, some_unused;
7806 toc = bfd_get_section_by_name (ibfd, ".toc");
7809 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7810 || elf_discarded_section (toc))
7814 symtab_hdr = &elf_symtab_hdr (ibfd);
7815 sym_hashes = elf_sym_hashes (ibfd);
7817 /* Look at sections dropped from the final link. */
7820 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7822 if (sec->reloc_count == 0
7823 || !elf_discarded_section (sec)
7824 || get_opd_info (sec)
7825 || (sec->flags & SEC_ALLOC) == 0
7826 || (sec->flags & SEC_DEBUGGING) != 0)
7829 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7830 if (relstart == NULL)
7833 /* Run through the relocs to see which toc entries might be
7835 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7837 enum elf_ppc64_reloc_type r_type;
7838 unsigned long r_symndx;
7840 struct elf_link_hash_entry *h;
7841 Elf_Internal_Sym *sym;
7844 r_type = ELF64_R_TYPE (rel->r_info);
7851 case R_PPC64_TOC16_LO:
7852 case R_PPC64_TOC16_HI:
7853 case R_PPC64_TOC16_HA:
7854 case R_PPC64_TOC16_DS:
7855 case R_PPC64_TOC16_LO_DS:
7859 r_symndx = ELF64_R_SYM (rel->r_info);
7860 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7868 val = h->root.u.def.value;
7870 val = sym->st_value;
7871 val += rel->r_addend;
7873 if (val >= toc->size)
7876 /* Anything in the toc ought to be aligned to 8 bytes.
7877 If not, don't mark as unused. */
7883 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7891 if (elf_section_data (sec)->relocs != relstart)
7898 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7902 if (local_syms != NULL
7903 && symtab_hdr->contents != (unsigned char *) local_syms)
7907 && elf_section_data (sec)->relocs != relstart)
7914 /* Now check all kept sections that might reference the toc.
7915 Check the toc itself last. */
7916 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7919 sec = (sec == toc ? NULL
7920 : sec->next == NULL ? toc
7921 : sec->next == toc && toc->next ? toc->next
7926 if (sec->reloc_count == 0
7927 || elf_discarded_section (sec)
7928 || get_opd_info (sec)
7929 || (sec->flags & SEC_ALLOC) == 0
7930 || (sec->flags & SEC_DEBUGGING) != 0)
7933 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7934 if (relstart == NULL)
7937 /* Mark toc entries referenced as used. */
7940 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7942 enum elf_ppc64_reloc_type r_type;
7943 unsigned long r_symndx;
7945 struct elf_link_hash_entry *h;
7946 Elf_Internal_Sym *sym;
7949 r_type = ELF64_R_TYPE (rel->r_info);
7953 case R_PPC64_TOC16_LO:
7954 case R_PPC64_TOC16_HI:
7955 case R_PPC64_TOC16_HA:
7956 case R_PPC64_TOC16_DS:
7957 case R_PPC64_TOC16_LO_DS:
7958 /* In case we're taking addresses of toc entries. */
7959 case R_PPC64_ADDR64:
7966 r_symndx = ELF64_R_SYM (rel->r_info);
7967 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7978 val = h->root.u.def.value;
7980 val = sym->st_value;
7981 val += rel->r_addend;
7983 if (val >= toc->size)
7986 /* For the toc section, we only mark as used if
7987 this entry itself isn't unused. */
7990 && (used[rel->r_offset >> 3]
7991 || !skip[rel->r_offset >> 3]))
7992 /* Do all the relocs again, to catch reference
8001 /* Merge the used and skip arrays. Assume that TOC
8002 doublewords not appearing as either used or unused belong
8003 to to an entry more than one doubleword in size. */
8004 for (drop = skip, keep = used, last = 0, some_unused = 0;
8005 drop < skip + (toc->size + 7) / 8;
8026 bfd_byte *contents, *src;
8029 /* Shuffle the toc contents, and at the same time convert the
8030 skip array from booleans into offsets. */
8031 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8034 elf_section_data (toc)->this_hdr.contents = contents;
8036 for (src = contents, off = 0, drop = skip;
8037 src < contents + toc->size;
8042 *drop = (unsigned long) -1;
8048 memcpy (src - off, src, 8);
8051 toc->rawsize = toc->size;
8052 toc->size = src - contents - off;
8054 if (toc->reloc_count != 0)
8056 Elf_Internal_Rela *wrel;
8059 /* Read toc relocs. */
8060 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8062 if (relstart == NULL)
8065 /* Remove unused toc relocs, and adjust those we keep. */
8067 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
8068 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
8070 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8071 wrel->r_info = rel->r_info;
8072 wrel->r_addend = rel->r_addend;
8075 else if (!dec_dynrel_count (rel->r_info, toc, info,
8076 &local_syms, NULL, NULL))
8079 toc->reloc_count = wrel - relstart;
8080 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
8081 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
8082 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
8085 /* Adjust addends for relocs against the toc section sym. */
8086 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8088 if (sec->reloc_count == 0
8089 || elf_discarded_section (sec))
8092 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8094 if (relstart == NULL)
8097 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8099 enum elf_ppc64_reloc_type r_type;
8100 unsigned long r_symndx;
8102 struct elf_link_hash_entry *h;
8103 Elf_Internal_Sym *sym;
8105 r_type = ELF64_R_TYPE (rel->r_info);
8112 case R_PPC64_TOC16_LO:
8113 case R_PPC64_TOC16_HI:
8114 case R_PPC64_TOC16_HA:
8115 case R_PPC64_TOC16_DS:
8116 case R_PPC64_TOC16_LO_DS:
8117 case R_PPC64_ADDR64:
8121 r_symndx = ELF64_R_SYM (rel->r_info);
8122 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8126 if (sym_sec != toc || h != NULL || sym->st_value != 0)
8129 rel->r_addend -= skip[rel->r_addend >> 3];
8133 /* We shouldn't have local or global symbols defined in the TOC,
8134 but handle them anyway. */
8135 if (local_syms != NULL)
8137 Elf_Internal_Sym *sym;
8139 for (sym = local_syms;
8140 sym < local_syms + symtab_hdr->sh_info;
8142 if (sym->st_value != 0
8143 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8145 if (skip[sym->st_value >> 3] != (unsigned long) -1)
8146 sym->st_value -= skip[sym->st_value >> 3];
8149 (*_bfd_error_handler)
8150 (_("%s defined in removed toc entry"),
8151 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
8154 sym->st_shndx = SHN_ABS;
8156 symtab_hdr->contents = (unsigned char *) local_syms;
8160 /* Finally, adjust any global syms defined in the toc. */
8161 if (toc_inf.global_toc_syms)
8164 toc_inf.skip = skip;
8165 toc_inf.global_toc_syms = FALSE;
8166 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8171 if (local_syms != NULL
8172 && symtab_hdr->contents != (unsigned char *) local_syms)
8174 if (!info->keep_memory)
8177 symtab_hdr->contents = (unsigned char *) local_syms;
8185 /* Allocate space for one GOT entry. */
8188 allocate_got (struct elf_link_hash_entry *h,
8189 struct bfd_link_info *info,
8190 struct got_entry *gent)
8192 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8194 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8195 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8197 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8198 ? 2 : 1) * sizeof (Elf64_External_Rela);
8199 asection *got = ppc64_elf_tdata (gent->owner)->got;
8201 gent->got.offset = got->size;
8202 got->size += entsize;
8204 dyn = htab->elf.dynamic_sections_created;
8206 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8207 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8208 || h->root.type != bfd_link_hash_undefweak))
8210 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8211 relgot->size += rentsize;
8213 else if (h->type == STT_GNU_IFUNC)
8215 asection *relgot = htab->reliplt;
8216 relgot->size += rentsize;
8217 htab->got_reli_size += rentsize;
8221 /* Allocate space in .plt, .got and associated reloc sections for
8225 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8227 struct bfd_link_info *info;
8228 struct ppc_link_hash_table *htab;
8230 struct ppc_link_hash_entry *eh;
8231 struct ppc_dyn_relocs *p;
8232 struct got_entry *gent;
8234 if (h->root.type == bfd_link_hash_indirect)
8237 if (h->root.type == bfd_link_hash_warning)
8238 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8240 info = (struct bfd_link_info *) inf;
8241 htab = ppc_hash_table (info);
8243 if ((htab->elf.dynamic_sections_created
8245 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8246 || h->type == STT_GNU_IFUNC)
8248 struct plt_entry *pent;
8249 bfd_boolean doneone = FALSE;
8250 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8251 if (pent->plt.refcount > 0)
8253 if (!htab->elf.dynamic_sections_created
8254 || h->dynindx == -1)
8257 pent->plt.offset = s->size;
8258 s->size += PLT_ENTRY_SIZE;
8263 /* If this is the first .plt entry, make room for the special
8267 s->size += PLT_INITIAL_ENTRY_SIZE;
8269 pent->plt.offset = s->size;
8271 /* Make room for this entry. */
8272 s->size += PLT_ENTRY_SIZE;
8274 /* Make room for the .glink code. */
8277 s->size += GLINK_CALL_STUB_SIZE;
8278 /* We need bigger stubs past index 32767. */
8279 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8283 /* We also need to make an entry in the .rela.plt section. */
8286 s->size += sizeof (Elf64_External_Rela);
8290 pent->plt.offset = (bfd_vma) -1;
8293 h->plt.plist = NULL;
8299 h->plt.plist = NULL;
8303 eh = (struct ppc_link_hash_entry *) h;
8304 /* Run through the TLS GD got entries first if we're changing them
8306 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8307 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8308 if (gent->got.refcount > 0
8309 && (gent->tls_type & TLS_GD) != 0)
8311 /* This was a GD entry that has been converted to TPREL. If
8312 there happens to be a TPREL entry we can use that one. */
8313 struct got_entry *ent;
8314 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8315 if (ent->got.refcount > 0
8316 && (ent->tls_type & TLS_TPREL) != 0
8317 && ent->addend == gent->addend
8318 && ent->owner == gent->owner)
8320 gent->got.refcount = 0;
8324 /* If not, then we'll be using our own TPREL entry. */
8325 if (gent->got.refcount != 0)
8326 gent->tls_type = TLS_TLS | TLS_TPREL;
8329 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8330 if (gent->got.refcount > 0)
8332 /* Make sure this symbol is output as a dynamic symbol.
8333 Undefined weak syms won't yet be marked as dynamic,
8334 nor will all TLS symbols. */
8335 if (h->dynindx == -1
8337 && h->type != STT_GNU_IFUNC
8338 && htab->elf.dynamic_sections_created)
8340 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8344 if ((gent->tls_type & TLS_LD) != 0
8347 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8348 gent->got.offset = (bfd_vma) -1;
8352 if (!is_ppc64_elf (gent->owner))
8355 allocate_got (h, info, gent);
8358 gent->got.offset = (bfd_vma) -1;
8360 if (eh->dyn_relocs == NULL
8361 || (!htab->elf.dynamic_sections_created
8362 && h->type != STT_GNU_IFUNC))
8365 /* In the shared -Bsymbolic case, discard space allocated for
8366 dynamic pc-relative relocs against symbols which turn out to be
8367 defined in regular objects. For the normal shared case, discard
8368 space for relocs that have become local due to symbol visibility
8373 /* Relocs that use pc_count are those that appear on a call insn,
8374 or certain REL relocs (see must_be_dyn_reloc) that can be
8375 generated via assembly. We want calls to protected symbols to
8376 resolve directly to the function rather than going via the plt.
8377 If people want function pointer comparisons to work as expected
8378 then they should avoid writing weird assembly. */
8379 if (SYMBOL_CALLS_LOCAL (info, h))
8381 struct ppc_dyn_relocs **pp;
8383 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8385 p->count -= p->pc_count;
8394 /* Also discard relocs on undefined weak syms with non-default
8396 if (eh->dyn_relocs != NULL
8397 && h->root.type == bfd_link_hash_undefweak)
8399 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8400 eh->dyn_relocs = NULL;
8402 /* Make sure this symbol is output as a dynamic symbol.
8403 Undefined weak syms won't yet be marked as dynamic. */
8404 else if (h->dynindx == -1
8405 && !h->forced_local)
8407 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8412 else if (h->type == STT_GNU_IFUNC)
8414 if (!h->non_got_ref)
8415 eh->dyn_relocs = NULL;
8417 else if (ELIMINATE_COPY_RELOCS)
8419 /* For the non-shared case, discard space for relocs against
8420 symbols which turn out to need copy relocs or are not
8426 /* Make sure this symbol is output as a dynamic symbol.
8427 Undefined weak syms won't yet be marked as dynamic. */
8428 if (h->dynindx == -1
8429 && !h->forced_local)
8431 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8435 /* If that succeeded, we know we'll be keeping all the
8437 if (h->dynindx != -1)
8441 eh->dyn_relocs = NULL;
8446 /* Finally, allocate space. */
8447 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8449 asection *sreloc = elf_section_data (p->sec)->sreloc;
8450 if (!htab->elf.dynamic_sections_created)
8451 sreloc = htab->reliplt;
8452 sreloc->size += p->count * sizeof (Elf64_External_Rela);
8458 /* Find any dynamic relocs that apply to read-only sections. */
8461 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8463 struct ppc_link_hash_entry *eh;
8464 struct ppc_dyn_relocs *p;
8466 if (h->root.type == bfd_link_hash_warning)
8467 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8469 eh = (struct ppc_link_hash_entry *) h;
8470 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8472 asection *s = p->sec->output_section;
8474 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8476 struct bfd_link_info *info = inf;
8478 info->flags |= DF_TEXTREL;
8480 /* Not an error, just cut short the traversal. */
8487 /* Set the sizes of the dynamic sections. */
8490 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8491 struct bfd_link_info *info)
8493 struct ppc_link_hash_table *htab;
8499 htab = ppc_hash_table (info);
8500 dynobj = htab->elf.dynobj;
8504 if (htab->elf.dynamic_sections_created)
8506 /* Set the contents of the .interp section to the interpreter. */
8507 if (info->executable)
8509 s = bfd_get_section_by_name (dynobj, ".interp");
8512 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8513 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8517 /* Set up .got offsets for local syms, and space for local dynamic
8519 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8521 struct got_entry **lgot_ents;
8522 struct got_entry **end_lgot_ents;
8523 struct plt_entry **local_plt;
8524 struct plt_entry **end_local_plt;
8526 bfd_size_type locsymcount;
8527 Elf_Internal_Shdr *symtab_hdr;
8530 if (!is_ppc64_elf (ibfd))
8533 for (s = ibfd->sections; s != NULL; s = s->next)
8535 struct ppc_dyn_relocs *p;
8537 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8539 if (!bfd_is_abs_section (p->sec)
8540 && bfd_is_abs_section (p->sec->output_section))
8542 /* Input section has been discarded, either because
8543 it is a copy of a linkonce section or due to
8544 linker script /DISCARD/, so we'll be discarding
8547 else if (p->count != 0)
8549 srel = elf_section_data (p->sec)->sreloc;
8550 if (!htab->elf.dynamic_sections_created)
8551 srel = htab->reliplt;
8552 srel->size += p->count * sizeof (Elf64_External_Rela);
8553 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8554 info->flags |= DF_TEXTREL;
8559 lgot_ents = elf_local_got_ents (ibfd);
8563 symtab_hdr = &elf_symtab_hdr (ibfd);
8564 locsymcount = symtab_hdr->sh_info;
8565 end_lgot_ents = lgot_ents + locsymcount;
8566 local_plt = (struct plt_entry **) end_lgot_ents;
8567 end_local_plt = local_plt + locsymcount;
8568 lgot_masks = (char *) end_local_plt;
8569 s = ppc64_elf_tdata (ibfd)->got;
8570 srel = ppc64_elf_tdata (ibfd)->relgot;
8571 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
8573 struct got_entry *ent;
8575 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
8576 if (ent->got.refcount > 0)
8578 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
8580 ppc64_tlsld_got (ibfd)->got.refcount += 1;
8581 ent->got.offset = (bfd_vma) -1;
8585 unsigned int num = 1;
8586 ent->got.offset = s->size;
8587 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
8591 srel->size += num * sizeof (Elf64_External_Rela);
8592 else if ((*lgot_masks & PLT_IFUNC) != 0)
8595 += num * sizeof (Elf64_External_Rela);
8597 += num * sizeof (Elf64_External_Rela);
8602 ent->got.offset = (bfd_vma) -1;
8605 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8606 for (; local_plt < end_local_plt; ++local_plt)
8608 struct plt_entry *ent;
8610 for (ent = *local_plt; ent != NULL; ent = ent->next)
8611 if (ent->plt.refcount > 0)
8614 ent->plt.offset = s->size;
8615 s->size += PLT_ENTRY_SIZE;
8617 htab->reliplt->size += sizeof (Elf64_External_Rela);
8620 ent->plt.offset = (bfd_vma) -1;
8624 /* Allocate global sym .plt and .got entries, and space for global
8625 sym dynamic relocs. */
8626 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
8628 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8630 if (!is_ppc64_elf (ibfd))
8633 if (ppc64_tlsld_got (ibfd)->got.refcount > 0)
8635 s = ppc64_elf_tdata (ibfd)->got;
8636 ppc64_tlsld_got (ibfd)->got.offset = s->size;
8637 ppc64_tlsld_got (ibfd)->owner = ibfd;
8641 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
8642 srel->size += sizeof (Elf64_External_Rela);
8646 ppc64_tlsld_got (ibfd)->got.offset = (bfd_vma) -1;
8649 /* We now have determined the sizes of the various dynamic sections.
8650 Allocate memory for them. */
8652 for (s = dynobj->sections; s != NULL; s = s->next)
8654 if ((s->flags & SEC_LINKER_CREATED) == 0)
8657 if (s == htab->brlt || s == htab->relbrlt)
8658 /* These haven't been allocated yet; don't strip. */
8660 else if (s == htab->got
8664 || s == htab->dynbss)
8666 /* Strip this section if we don't need it; see the
8669 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8673 if (s != htab->relplt)
8676 /* We use the reloc_count field as a counter if we need
8677 to copy relocs into the output file. */
8683 /* It's not one of our sections, so don't allocate space. */
8689 /* If we don't need this section, strip it from the
8690 output file. This is mostly to handle .rela.bss and
8691 .rela.plt. We must create both sections in
8692 create_dynamic_sections, because they must be created
8693 before the linker maps input sections to output
8694 sections. The linker does that before
8695 adjust_dynamic_symbol is called, and it is that
8696 function which decides whether anything needs to go
8697 into these sections. */
8698 s->flags |= SEC_EXCLUDE;
8702 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8705 /* Allocate memory for the section contents. We use bfd_zalloc
8706 here in case unused entries are not reclaimed before the
8707 section's contents are written out. This should not happen,
8708 but this way if it does we get a R_PPC64_NONE reloc in .rela
8709 sections instead of garbage.
8710 We also rely on the section contents being zero when writing
8712 s->contents = bfd_zalloc (dynobj, s->size);
8713 if (s->contents == NULL)
8717 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8719 if (!is_ppc64_elf (ibfd))
8722 s = ppc64_elf_tdata (ibfd)->got;
8723 if (s != NULL && s != htab->got)
8726 s->flags |= SEC_EXCLUDE;
8729 s->contents = bfd_zalloc (ibfd, s->size);
8730 if (s->contents == NULL)
8734 s = ppc64_elf_tdata (ibfd)->relgot;
8738 s->flags |= SEC_EXCLUDE;
8741 s->contents = bfd_zalloc (ibfd, s->size);
8742 if (s->contents == NULL)
8750 if (htab->elf.dynamic_sections_created)
8752 /* Add some entries to the .dynamic section. We fill in the
8753 values later, in ppc64_elf_finish_dynamic_sections, but we
8754 must add the entries now so that we get the correct size for
8755 the .dynamic section. The DT_DEBUG entry is filled in by the
8756 dynamic linker and used by the debugger. */
8757 #define add_dynamic_entry(TAG, VAL) \
8758 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8760 if (info->executable)
8762 if (!add_dynamic_entry (DT_DEBUG, 0))
8766 if (htab->plt != NULL && htab->plt->size != 0)
8768 if (!add_dynamic_entry (DT_PLTGOT, 0)
8769 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8770 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8771 || !add_dynamic_entry (DT_JMPREL, 0)
8772 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
8778 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8779 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
8783 if (!htab->no_tls_get_addr_opt
8784 && htab->tls_get_addr_fd != NULL
8785 && htab->tls_get_addr_fd->elf.plt.plist != NULL
8786 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
8791 if (!add_dynamic_entry (DT_RELA, 0)
8792 || !add_dynamic_entry (DT_RELASZ, 0)
8793 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
8796 /* If any dynamic relocs apply to a read-only section,
8797 then we need a DT_TEXTREL entry. */
8798 if ((info->flags & DF_TEXTREL) == 0)
8799 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
8801 if ((info->flags & DF_TEXTREL) != 0)
8803 if (!add_dynamic_entry (DT_TEXTREL, 0))
8808 #undef add_dynamic_entry
8813 /* Determine the type of stub needed, if any, for a call. */
8815 static inline enum ppc_stub_type
8816 ppc_type_of_stub (asection *input_sec,
8817 const Elf_Internal_Rela *rel,
8818 struct ppc_link_hash_entry **hash,
8819 struct plt_entry **plt_ent,
8820 bfd_vma destination)
8822 struct ppc_link_hash_entry *h = *hash;
8824 bfd_vma branch_offset;
8825 bfd_vma max_branch_offset;
8826 enum elf_ppc64_reloc_type r_type;
8830 struct plt_entry *ent;
8831 struct ppc_link_hash_entry *fdh = h;
8833 && h->oh->is_func_descriptor)
8834 fdh = ppc_follow_link (h->oh);
8836 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
8837 if (ent->addend == rel->r_addend
8838 && ent->plt.offset != (bfd_vma) -1)
8842 return ppc_stub_plt_call;
8845 /* Here, we know we don't have a plt entry. If we don't have a
8846 either a defined function descriptor or a defined entry symbol
8847 in a regular object file, then it is pointless trying to make
8848 any other type of stub. */
8849 if (!((fdh->elf.root.type == bfd_link_hash_defined
8850 || fdh->elf.root.type == bfd_link_hash_defweak)
8851 && fdh->elf.root.u.def.section->output_section != NULL)
8852 && !((h->elf.root.type == bfd_link_hash_defined
8853 || h->elf.root.type == bfd_link_hash_defweak)
8854 && h->elf.root.u.def.section->output_section != NULL))
8855 return ppc_stub_none;
8857 else if (elf_local_got_ents (input_sec->owner) != NULL)
8859 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
8860 struct plt_entry **local_plt = (struct plt_entry **)
8861 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
8862 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
8864 if (local_plt[r_symndx] != NULL)
8866 struct plt_entry *ent;
8868 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
8869 if (ent->addend == rel->r_addend
8870 && ent->plt.offset != (bfd_vma) -1)
8873 return ppc_stub_plt_call;
8878 /* Determine where the call point is. */
8879 location = (input_sec->output_offset
8880 + input_sec->output_section->vma
8883 branch_offset = destination - location;
8884 r_type = ELF64_R_TYPE (rel->r_info);
8886 /* Determine if a long branch stub is needed. */
8887 max_branch_offset = 1 << 25;
8888 if (r_type != R_PPC64_REL24)
8889 max_branch_offset = 1 << 15;
8891 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8892 /* We need a stub. Figure out whether a long_branch or plt_branch
8894 return ppc_stub_long_branch;
8896 return ppc_stub_none;
8899 /* Build a .plt call stub. */
8901 static inline bfd_byte *
8902 build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
8904 #define PPC_LO(v) ((v) & 0xffff)
8905 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8906 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8908 if (PPC_HA (offset) != 0)
8912 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8913 r[1].r_offset = r[0].r_offset + 8;
8914 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8915 r[1].r_addend = r[0].r_addend;
8916 if (PPC_HA (offset + 16) != PPC_HA (offset))
8918 r[2].r_offset = r[1].r_offset + 4;
8919 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
8920 r[2].r_addend = r[0].r_addend;
8924 r[2].r_offset = r[1].r_offset + 8;
8925 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8926 r[2].r_addend = r[0].r_addend + 8;
8927 r[3].r_offset = r[2].r_offset + 4;
8928 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8929 r[3].r_addend = r[0].r_addend + 16;
8932 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8933 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8934 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8935 if (PPC_HA (offset + 16) != PPC_HA (offset))
8937 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
8940 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8941 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
8942 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
8943 bfd_put_32 (obfd, BCTR, p), p += 4;
8950 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8951 if (PPC_HA (offset + 16) != PPC_HA (offset))
8953 r[1].r_offset = r[0].r_offset + 4;
8954 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
8955 r[1].r_addend = r[0].r_addend;
8959 r[1].r_offset = r[0].r_offset + 8;
8960 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8961 r[1].r_addend = r[0].r_addend + 16;
8962 r[2].r_offset = r[1].r_offset + 4;
8963 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8964 r[2].r_addend = r[0].r_addend + 8;
8967 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8968 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
8969 if (PPC_HA (offset + 16) != PPC_HA (offset))
8971 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
8974 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8975 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
8976 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
8977 bfd_put_32 (obfd, BCTR, p), p += 4;
8982 /* Build a special .plt call stub for __tls_get_addr. */
8984 #define LD_R11_0R3 0xe9630000
8985 #define LD_R12_0R3 0xe9830000
8986 #define MR_R0_R3 0x7c601b78
8987 #define CMPDI_R11_0 0x2c2b0000
8988 #define ADD_R3_R12_R13 0x7c6c6a14
8989 #define BEQLR 0x4d820020
8990 #define MR_R3_R0 0x7c030378
8991 #define MFLR_R11 0x7d6802a6
8992 #define STD_R11_0R1 0xf9610000
8993 #define BCTRL 0x4e800421
8994 #define LD_R11_0R1 0xe9610000
8995 #define LD_R2_0R1 0xe8410000
8996 #define MTLR_R11 0x7d6803a6
8998 static inline bfd_byte *
8999 build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset,
9000 Elf_Internal_Rela *r)
9002 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9003 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9004 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9005 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9006 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9007 bfd_put_32 (obfd, BEQLR, p), p += 4;
9008 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9009 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9010 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9013 r[0].r_offset += 9 * 4;
9014 p = build_plt_stub (obfd, p, offset, r);
9015 bfd_put_32 (obfd, BCTRL, p - 4);
9017 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9018 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9019 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9020 bfd_put_32 (obfd, BLR, p), p += 4;
9025 static Elf_Internal_Rela *
9026 get_relocs (asection *sec, int count)
9028 Elf_Internal_Rela *relocs;
9029 struct bfd_elf_section_data *elfsec_data;
9031 elfsec_data = elf_section_data (sec);
9032 relocs = elfsec_data->relocs;
9035 bfd_size_type relsize;
9036 relsize = sec->reloc_count * sizeof (*relocs);
9037 relocs = bfd_alloc (sec->owner, relsize);
9040 elfsec_data->relocs = relocs;
9041 elfsec_data->rel_hdr.sh_size = (sec->reloc_count
9042 * sizeof (Elf64_External_Rela));
9043 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
9044 sec->reloc_count = 0;
9046 relocs += sec->reloc_count;
9047 sec->reloc_count += count;
9052 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9054 struct ppc_stub_hash_entry *stub_entry;
9055 struct ppc_branch_hash_entry *br_entry;
9056 struct bfd_link_info *info;
9057 struct ppc_link_hash_table *htab;
9062 Elf_Internal_Rela *r;
9065 /* Massage our args to the form they really have. */
9066 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9069 htab = ppc_hash_table (info);
9071 /* Make a note of the offset within the stubs for this entry. */
9072 stub_entry->stub_offset = stub_entry->stub_sec->size;
9073 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9075 htab->stub_count[stub_entry->stub_type - 1] += 1;
9076 switch (stub_entry->stub_type)
9078 case ppc_stub_long_branch:
9079 case ppc_stub_long_branch_r2off:
9080 /* Branches are relative. This is where we are going to. */
9081 off = dest = (stub_entry->target_value
9082 + stub_entry->target_section->output_offset
9083 + stub_entry->target_section->output_section->vma);
9085 /* And this is where we are coming from. */
9086 off -= (stub_entry->stub_offset
9087 + stub_entry->stub_sec->output_offset
9088 + stub_entry->stub_sec->output_section->vma);
9091 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9095 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9096 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9097 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9100 if (PPC_HA (r2off) != 0)
9103 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9106 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9110 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9112 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9114 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
9115 stub_entry->root.string);
9116 htab->stub_error = TRUE;
9120 if (info->emitrelocations)
9122 r = get_relocs (stub_entry->stub_sec, 1);
9125 r->r_offset = loc - stub_entry->stub_sec->contents;
9126 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9128 if (stub_entry->h != NULL)
9130 struct elf_link_hash_entry **hashes;
9131 unsigned long symndx;
9132 struct ppc_link_hash_entry *h;
9134 hashes = elf_sym_hashes (htab->stub_bfd);
9137 bfd_size_type hsize;
9139 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9140 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9143 elf_sym_hashes (htab->stub_bfd) = hashes;
9144 htab->stub_globals = 1;
9146 symndx = htab->stub_globals++;
9148 hashes[symndx] = &h->elf;
9149 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9150 if (h->oh != NULL && h->oh->is_func)
9151 h = ppc_follow_link (h->oh);
9152 if (h->elf.root.u.def.section != stub_entry->target_section)
9153 /* H is an opd symbol. The addend must be zero. */
9157 off = (h->elf.root.u.def.value
9158 + h->elf.root.u.def.section->output_offset
9159 + h->elf.root.u.def.section->output_section->vma);
9166 case ppc_stub_plt_branch:
9167 case ppc_stub_plt_branch_r2off:
9168 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9169 stub_entry->root.string + 9,
9171 if (br_entry == NULL)
9173 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
9174 stub_entry->root.string);
9175 htab->stub_error = TRUE;
9179 dest = (stub_entry->target_value
9180 + stub_entry->target_section->output_offset
9181 + stub_entry->target_section->output_section->vma);
9183 bfd_put_64 (htab->brlt->owner, dest,
9184 htab->brlt->contents + br_entry->offset);
9186 if (br_entry->iter == htab->stub_iteration)
9190 if (htab->relbrlt != NULL)
9192 /* Create a reloc for the branch lookup table entry. */
9193 Elf_Internal_Rela rela;
9196 rela.r_offset = (br_entry->offset
9197 + htab->brlt->output_offset
9198 + htab->brlt->output_section->vma);
9199 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9200 rela.r_addend = dest;
9202 rl = htab->relbrlt->contents;
9203 rl += (htab->relbrlt->reloc_count++
9204 * sizeof (Elf64_External_Rela));
9205 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9207 else if (info->emitrelocations)
9209 r = get_relocs (htab->brlt, 1);
9212 /* brlt, being SEC_LINKER_CREATED does not go through the
9213 normal reloc processing. Symbols and offsets are not
9214 translated from input file to output file form, so
9215 set up the offset per the output file. */
9216 r->r_offset = (br_entry->offset
9217 + htab->brlt->output_offset
9218 + htab->brlt->output_section->vma);
9219 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9224 dest = (br_entry->offset
9225 + htab->brlt->output_offset
9226 + htab->brlt->output_section->vma);
9229 - elf_gp (htab->brlt->output_section->owner)
9230 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9232 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9234 (*_bfd_error_handler)
9235 (_("linkage table error against `%s'"),
9236 stub_entry->root.string);
9237 bfd_set_error (bfd_error_bad_value);
9238 htab->stub_error = TRUE;
9242 if (info->emitrelocations)
9244 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
9247 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9248 if (bfd_big_endian (info->output_bfd))
9250 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
9252 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9253 r[0].r_addend = dest;
9254 if (PPC_HA (off) != 0)
9256 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9257 r[1].r_offset = r[0].r_offset + 4;
9258 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9259 r[1].r_addend = r[0].r_addend;
9263 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9265 if (PPC_HA (off) != 0)
9268 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9270 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9275 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9282 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9283 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9284 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9287 if (PPC_HA (off) != 0)
9290 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9292 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9297 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9301 if (PPC_HA (r2off) != 0)
9304 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9307 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9310 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
9312 bfd_put_32 (htab->stub_bfd, BCTR, loc);
9315 case ppc_stub_plt_call:
9316 if (stub_entry->h != NULL
9317 && stub_entry->h->is_func_descriptor
9318 && stub_entry->h->oh != NULL)
9320 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
9322 /* If the old-ABI "dot-symbol" is undefined make it weak so
9323 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9324 FIXME: We used to define the symbol on one of the call
9325 stubs instead, which is why we test symbol section id
9326 against htab->top_id in various places. Likely all
9327 these checks could now disappear. */
9328 if (fh->elf.root.type == bfd_link_hash_undefined)
9329 fh->elf.root.type = bfd_link_hash_undefweak;
9332 /* Now build the stub. */
9333 dest = stub_entry->plt_ent->plt.offset & ~1;
9334 if (dest >= (bfd_vma) -2)
9338 if (!htab->elf.dynamic_sections_created
9339 || stub_entry->h == NULL
9340 || stub_entry->h->elf.dynindx == -1)
9343 dest += plt->output_offset + plt->output_section->vma;
9345 if (stub_entry->h == NULL
9346 && (stub_entry->plt_ent->plt.offset & 1) == 0)
9348 Elf_Internal_Rela rela;
9351 rela.r_offset = dest;
9352 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
9353 rela.r_addend = (stub_entry->target_value
9354 + stub_entry->target_section->output_offset
9355 + stub_entry->target_section->output_section->vma);
9357 rl = (htab->reliplt->contents
9358 + (htab->reliplt->reloc_count++
9359 * sizeof (Elf64_External_Rela)));
9360 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
9361 stub_entry->plt_ent->plt.offset |= 1;
9365 - elf_gp (plt->output_section->owner)
9366 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9368 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9370 (*_bfd_error_handler)
9371 (_("linkage table error against `%s'"),
9372 stub_entry->h != NULL
9373 ? stub_entry->h->elf.root.root.string
9375 bfd_set_error (bfd_error_bad_value);
9376 htab->stub_error = TRUE;
9381 if (info->emitrelocations)
9383 r = get_relocs (stub_entry->stub_sec,
9384 (2 + (PPC_HA (off) != 0)
9385 + (PPC_HA (off + 16) == PPC_HA (off))));
9388 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9389 if (bfd_big_endian (info->output_bfd))
9391 r[0].r_addend = dest;
9393 if (stub_entry->h != NULL
9394 && (stub_entry->h == htab->tls_get_addr_fd
9395 || stub_entry->h == htab->tls_get_addr)
9396 && !htab->no_tls_get_addr_opt)
9397 p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r);
9399 p = build_plt_stub (htab->stub_bfd, loc, off, r);
9408 stub_entry->stub_sec->size += size;
9410 if (htab->emit_stub_syms)
9412 struct elf_link_hash_entry *h;
9415 const char *const stub_str[] = { "long_branch",
9416 "long_branch_r2off",
9421 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
9422 len2 = strlen (stub_entry->root.string);
9423 name = bfd_malloc (len1 + len2 + 2);
9426 memcpy (name, stub_entry->root.string, 9);
9427 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
9428 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
9429 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
9432 if (h->root.type == bfd_link_hash_new)
9434 h->root.type = bfd_link_hash_defined;
9435 h->root.u.def.section = stub_entry->stub_sec;
9436 h->root.u.def.value = stub_entry->stub_offset;
9439 h->ref_regular_nonweak = 1;
9440 h->forced_local = 1;
9448 /* As above, but don't actually build the stub. Just bump offset so
9449 we know stub section sizes, and select plt_branch stubs where
9450 long_branch stubs won't do. */
9453 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9455 struct ppc_stub_hash_entry *stub_entry;
9456 struct bfd_link_info *info;
9457 struct ppc_link_hash_table *htab;
9461 /* Massage our args to the form they really have. */
9462 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9465 htab = ppc_hash_table (info);
9467 if (stub_entry->stub_type == ppc_stub_plt_call)
9470 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
9471 if (off >= (bfd_vma) -2)
9474 if (!htab->elf.dynamic_sections_created
9475 || stub_entry->h == NULL
9476 || stub_entry->h->elf.dynindx == -1)
9478 off += (plt->output_offset
9479 + plt->output_section->vma
9480 - elf_gp (plt->output_section->owner)
9481 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9483 size = PLT_CALL_STUB_SIZE;
9484 if (PPC_HA (off) == 0)
9486 if (PPC_HA (off + 16) != PPC_HA (off))
9488 if (stub_entry->h != NULL
9489 && (stub_entry->h == htab->tls_get_addr_fd
9490 || stub_entry->h == htab->tls_get_addr)
9491 && !htab->no_tls_get_addr_opt)
9493 if (info->emitrelocations)
9495 stub_entry->stub_sec->reloc_count
9496 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
9497 stub_entry->stub_sec->flags |= SEC_RELOC;
9502 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9506 off = (stub_entry->target_value
9507 + stub_entry->target_section->output_offset
9508 + stub_entry->target_section->output_section->vma);
9509 off -= (stub_entry->stub_sec->size
9510 + stub_entry->stub_sec->output_offset
9511 + stub_entry->stub_sec->output_section->vma);
9513 /* Reset the stub type from the plt variant in case we now
9514 can reach with a shorter stub. */
9515 if (stub_entry->stub_type >= ppc_stub_plt_branch)
9516 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
9519 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9521 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9522 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9524 if (PPC_HA (r2off) != 0)
9529 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9530 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9532 struct ppc_branch_hash_entry *br_entry;
9534 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9535 stub_entry->root.string + 9,
9537 if (br_entry == NULL)
9539 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
9540 stub_entry->root.string);
9541 htab->stub_error = TRUE;
9545 if (br_entry->iter != htab->stub_iteration)
9547 br_entry->iter = htab->stub_iteration;
9548 br_entry->offset = htab->brlt->size;
9549 htab->brlt->size += 8;
9551 if (htab->relbrlt != NULL)
9552 htab->relbrlt->size += sizeof (Elf64_External_Rela);
9553 else if (info->emitrelocations)
9555 htab->brlt->reloc_count += 1;
9556 htab->brlt->flags |= SEC_RELOC;
9560 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
9561 off = (br_entry->offset
9562 + htab->brlt->output_offset
9563 + htab->brlt->output_section->vma
9564 - elf_gp (htab->brlt->output_section->owner)
9565 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9567 if (info->emitrelocations)
9569 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
9570 stub_entry->stub_sec->flags |= SEC_RELOC;
9573 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9576 if (PPC_HA (off) != 0)
9582 if (PPC_HA (off) != 0)
9585 if (PPC_HA (r2off) != 0)
9589 else if (info->emitrelocations)
9591 stub_entry->stub_sec->reloc_count += 1;
9592 stub_entry->stub_sec->flags |= SEC_RELOC;
9596 stub_entry->stub_sec->size += size;
9600 /* Set up various things so that we can make a list of input sections
9601 for each output section included in the link. Returns -1 on error,
9602 0 when no stubs will be needed, and 1 on success. */
9605 ppc64_elf_setup_section_lists
9606 (struct bfd_link_info *info,
9607 asection *(*add_stub_section) (const char *, asection *),
9608 void (*layout_sections_again) (void))
9611 int top_id, top_index, id;
9613 asection **input_list;
9615 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9617 /* Stash our params away. */
9618 htab->add_stub_section = add_stub_section;
9619 htab->layout_sections_again = layout_sections_again;
9621 if (htab->brlt == NULL)
9624 /* Find the top input section id. */
9625 for (input_bfd = info->input_bfds, top_id = 3;
9627 input_bfd = input_bfd->link_next)
9629 for (section = input_bfd->sections;
9631 section = section->next)
9633 if (top_id < section->id)
9634 top_id = section->id;
9638 htab->top_id = top_id;
9639 amt = sizeof (struct map_stub) * (top_id + 1);
9640 htab->stub_group = bfd_zmalloc (amt);
9641 if (htab->stub_group == NULL)
9644 /* Set toc_off for com, und, abs and ind sections. */
9645 for (id = 0; id < 3; id++)
9646 htab->stub_group[id].toc_off = TOC_BASE_OFF;
9648 /* We can't use output_bfd->section_count here to find the top output
9649 section index as some sections may have been removed, and
9650 strip_excluded_output_sections doesn't renumber the indices. */
9651 for (section = info->output_bfd->sections, top_index = 0;
9653 section = section->next)
9655 if (top_index < section->index)
9656 top_index = section->index;
9659 htab->top_index = top_index;
9660 amt = sizeof (asection *) * (top_index + 1);
9661 input_list = bfd_zmalloc (amt);
9662 htab->input_list = input_list;
9663 if (input_list == NULL)
9669 /* Set up for first pass at multitoc partitioning. */
9672 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
9674 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9676 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
9677 htab->toc_curr = elf_gp (info->output_bfd);
9678 htab->toc_bfd = NULL;
9679 htab->toc_first_sec = NULL;
9682 /* The linker repeatedly calls this function for each TOC input section
9683 and linker generated GOT section. Group input bfds such that the toc
9684 within a group is less than 64k in size. */
9687 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
9689 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9692 if (!htab->second_toc_pass)
9694 /* Keep track of the first .toc or .got section for this input bfd. */
9695 if (htab->toc_bfd != isec->owner)
9697 htab->toc_bfd = isec->owner;
9698 htab->toc_first_sec = isec;
9701 addr = isec->output_offset + isec->output_section->vma;
9702 off = addr - htab->toc_curr;
9703 if (off + isec->size > 0x10000)
9705 addr = (htab->toc_first_sec->output_offset
9706 + htab->toc_first_sec->output_section->vma);
9707 htab->toc_curr = addr;
9710 /* toc_curr is the base address of this toc group. Set elf_gp
9711 for the input section to be the offset relative to the
9712 output toc base plus 0x8000. Making the input elf_gp an
9713 offset allows us to move the toc as a whole without
9714 recalculating input elf_gp. */
9715 off = htab->toc_curr - elf_gp (isec->output_section->owner);
9716 off += TOC_BASE_OFF;
9718 /* Die if someone uses a linker script that doesn't keep input
9719 file .toc and .got together. */
9720 if (elf_gp (isec->owner) != 0
9721 && elf_gp (isec->owner) != off)
9724 elf_gp (isec->owner) = off;
9728 /* During the second pass toc_first_sec points to the start of
9729 a toc group, and toc_curr is used to track the old elf_gp.
9730 We use toc_bfd to ensure we only look at each bfd once. */
9731 if (htab->toc_bfd == isec->owner)
9733 htab->toc_bfd = isec->owner;
9735 if (htab->toc_first_sec == NULL
9736 || htab->toc_curr != elf_gp (isec->owner))
9738 htab->toc_curr = elf_gp (isec->owner);
9739 htab->toc_first_sec = isec;
9741 addr = (htab->toc_first_sec->output_offset
9742 + htab->toc_first_sec->output_section->vma);
9743 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
9744 elf_gp (isec->owner) = off;
9749 /* This function removes unneeded got entries (those with got.offset == -1)
9750 and merges entries in the same toc group. */
9753 merge_got_entries (struct got_entry **pent)
9755 struct got_entry *ent, *ent2;
9757 while ((ent = *pent) != NULL)
9759 if (!ent->is_indirect)
9761 if (ent->got.offset == (bfd_vma) -1)
9766 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9767 if (!ent2->is_indirect
9768 && ent2->got.offset != (bfd_vma) -1
9769 && ent2->addend == ent->addend
9770 && ent2->tls_type == ent->tls_type
9771 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9773 ent2->is_indirect = TRUE;
9774 ent2->got.ent = ent;
9781 /* Called via elf_link_hash_traverse to merge GOT entries for global
9785 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9787 if (h->root.type == bfd_link_hash_indirect)
9790 if (h->root.type == bfd_link_hash_warning)
9791 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9793 merge_got_entries (&h->got.glist);
9798 /* Called via elf_link_hash_traverse to allocate GOT entries for global
9802 reallocate_got (struct elf_link_hash_entry *h, void *inf)
9804 struct got_entry *gent;
9806 if (h->root.type == bfd_link_hash_indirect)
9809 if (h->root.type == bfd_link_hash_warning)
9810 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9812 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9813 if (!gent->is_indirect)
9814 allocate_got (h, (struct bfd_link_info *) inf, gent);
9818 /* Called on the first multitoc pass after the last call to
9819 ppc64_elf_next_toc_section. This function removes duplicate GOT
9823 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
9825 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9826 struct bfd *ibfd, *ibfd2;
9827 bfd_boolean done_something;
9829 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
9831 /* Merge local got entries within a toc group. */
9832 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9834 struct got_entry **lgot_ents;
9835 struct got_entry **end_lgot_ents;
9836 Elf_Internal_Shdr *symtab_hdr;
9837 bfd_size_type locsymcount;
9839 if (!is_ppc64_elf (ibfd))
9842 lgot_ents = elf_local_got_ents (ibfd);
9846 symtab_hdr = &elf_symtab_hdr (ibfd);
9847 locsymcount = symtab_hdr->sh_info;
9848 end_lgot_ents = lgot_ents + locsymcount;
9850 for (; lgot_ents < end_lgot_ents; ++lgot_ents)
9851 merge_got_entries (lgot_ents);
9854 /* And the same for global sym got entries. */
9855 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
9857 /* And tlsld_got. */
9858 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9860 struct got_entry *ent, *ent2;
9862 if (!is_ppc64_elf (ibfd))
9865 ent = ppc64_tlsld_got (ibfd);
9866 if (!ent->is_indirect
9867 && ent->got.offset != (bfd_vma) -1)
9869 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
9871 if (!is_ppc64_elf (ibfd2))
9874 ent2 = ppc64_tlsld_got (ibfd2);
9875 if (!ent2->is_indirect
9876 && ent2->got.offset != (bfd_vma) -1
9877 && elf_gp (ibfd2) == elf_gp (ibfd))
9879 ent2->is_indirect = TRUE;
9880 ent2->got.ent = ent;
9886 /* Zap sizes of got sections. */
9887 htab->reliplt->rawsize = htab->reliplt->size;
9888 htab->reliplt->size -= htab->got_reli_size;
9889 htab->got_reli_size = 0;
9891 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9893 asection *got, *relgot;
9895 if (!is_ppc64_elf (ibfd))
9898 got = ppc64_elf_tdata (ibfd)->got;
9901 got->rawsize = got->size;
9903 relgot = ppc64_elf_tdata (ibfd)->relgot;
9904 relgot->rawsize = relgot->size;
9909 /* Now reallocate the got, local syms first. We don't need to
9910 allocate section contents again since we never increase size. */
9911 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9913 struct got_entry **lgot_ents;
9914 struct got_entry **end_lgot_ents;
9915 struct plt_entry **local_plt;
9916 struct plt_entry **end_local_plt;
9918 bfd_size_type locsymcount;
9919 Elf_Internal_Shdr *symtab_hdr;
9922 if (!is_ppc64_elf (ibfd))
9925 lgot_ents = elf_local_got_ents (ibfd);
9929 symtab_hdr = &elf_symtab_hdr (ibfd);
9930 locsymcount = symtab_hdr->sh_info;
9931 end_lgot_ents = lgot_ents + locsymcount;
9932 local_plt = (struct plt_entry **) end_lgot_ents;
9933 end_local_plt = local_plt + locsymcount;
9934 lgot_masks = (char *) end_local_plt;
9935 s = ppc64_elf_tdata (ibfd)->got;
9936 srel = ppc64_elf_tdata (ibfd)->relgot;
9937 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9939 struct got_entry *ent;
9941 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
9942 if (!ent->is_indirect)
9944 unsigned int num = 1;
9945 ent->got.offset = s->size;
9946 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9950 srel->size += num * sizeof (Elf64_External_Rela);
9951 else if ((*lgot_masks & PLT_IFUNC) != 0)
9954 += num * sizeof (Elf64_External_Rela);
9956 += num * sizeof (Elf64_External_Rela);
9962 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
9964 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9966 struct got_entry *ent;
9968 if (!is_ppc64_elf (ibfd))
9971 ent = ppc64_tlsld_got (ibfd);
9972 if (!ent->is_indirect
9973 && ent->got.offset != (bfd_vma) -1)
9975 asection *s = ppc64_elf_tdata (ibfd)->got;
9976 ent->got.offset = s->size;
9980 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9981 srel->size += sizeof (Elf64_External_Rela);
9986 done_something = htab->reliplt->rawsize != htab->reliplt->size;
9987 if (!done_something)
9988 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9992 if (!is_ppc64_elf (ibfd))
9995 got = ppc64_elf_tdata (ibfd)->got;
9998 done_something = got->rawsize != got->size;
10004 if (done_something)
10005 (*htab->layout_sections_again) ();
10007 /* Set up for second pass over toc sections to recalculate elf_gp
10008 on input sections. */
10009 htab->toc_bfd = NULL;
10010 htab->toc_first_sec = NULL;
10011 htab->second_toc_pass = TRUE;
10012 return done_something;
10015 /* Called after second pass of multitoc partitioning. */
10018 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10020 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10022 /* After the second pass, toc_curr tracks the TOC offset used
10023 for code sections below in ppc64_elf_next_input_section. */
10024 htab->toc_curr = TOC_BASE_OFF;
10027 /* No toc references were found in ISEC. If the code in ISEC makes no
10028 calls, then there's no need to use toc adjusting stubs when branching
10029 into ISEC. Actually, indirect calls from ISEC are OK as they will
10030 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10031 needed, and 2 if a cyclical call-graph was found but no other reason
10032 for a stub was detected. If called from the top level, a return of
10033 2 means the same as a return of 0. */
10036 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10038 Elf_Internal_Rela *relstart, *rel;
10039 Elf_Internal_Sym *local_syms;
10041 struct ppc_link_hash_table *htab;
10043 /* We know none of our code bearing sections will need toc stubs. */
10044 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10047 if (isec->size == 0)
10050 if (isec->output_section == NULL)
10053 if (isec->reloc_count == 0)
10056 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10057 info->keep_memory);
10058 if (relstart == NULL)
10061 /* Look for branches to outside of this section. */
10064 htab = ppc_hash_table (info);
10065 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10067 enum elf_ppc64_reloc_type r_type;
10068 unsigned long r_symndx;
10069 struct elf_link_hash_entry *h;
10070 struct ppc_link_hash_entry *eh;
10071 Elf_Internal_Sym *sym;
10073 struct _opd_sec_data *opd;
10077 r_type = ELF64_R_TYPE (rel->r_info);
10078 if (r_type != R_PPC64_REL24
10079 && r_type != R_PPC64_REL14
10080 && r_type != R_PPC64_REL14_BRTAKEN
10081 && r_type != R_PPC64_REL14_BRNTAKEN)
10084 r_symndx = ELF64_R_SYM (rel->r_info);
10085 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10092 /* Calls to dynamic lib functions go through a plt call stub
10094 eh = (struct ppc_link_hash_entry *) h;
10096 && (eh->elf.plt.plist != NULL
10098 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10104 if (sym_sec == NULL)
10105 /* Ignore other undefined symbols. */
10108 /* Assume branches to other sections not included in the link need
10109 stubs too, to cover -R and absolute syms. */
10110 if (sym_sec->output_section == NULL)
10117 sym_value = sym->st_value;
10120 if (h->root.type != bfd_link_hash_defined
10121 && h->root.type != bfd_link_hash_defweak)
10123 sym_value = h->root.u.def.value;
10125 sym_value += rel->r_addend;
10127 /* If this branch reloc uses an opd sym, find the code section. */
10128 opd = get_opd_info (sym_sec);
10131 if (h == NULL && opd->adjust != NULL)
10135 adjust = opd->adjust[sym->st_value / 8];
10137 /* Assume deleted functions won't ever be called. */
10139 sym_value += adjust;
10142 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10143 if (dest == (bfd_vma) -1)
10148 + sym_sec->output_offset
10149 + sym_sec->output_section->vma);
10151 /* Ignore branch to self. */
10152 if (sym_sec == isec)
10155 /* If the called function uses the toc, we need a stub. */
10156 if (sym_sec->has_toc_reloc
10157 || sym_sec->makes_toc_func_call)
10163 /* Assume any branch that needs a long branch stub might in fact
10164 need a plt_branch stub. A plt_branch stub uses r2. */
10165 else if (dest - (isec->output_offset
10166 + isec->output_section->vma
10167 + rel->r_offset) + (1 << 25) >= (2 << 25))
10173 /* If calling back to a section in the process of being tested, we
10174 can't say for sure that no toc adjusting stubs are needed, so
10175 don't return zero. */
10176 else if (sym_sec->call_check_in_progress)
10179 /* Branches to another section that itself doesn't have any TOC
10180 references are OK. Recursively call ourselves to check. */
10181 else if (sym_sec->id <= htab->top_id
10182 && htab->stub_group[sym_sec->id].toc_off == 0)
10186 /* Mark current section as indeterminate, so that other
10187 sections that call back to current won't be marked as
10189 isec->call_check_in_progress = 1;
10190 recur = toc_adjusting_stub_needed (info, sym_sec);
10191 isec->call_check_in_progress = 0;
10195 /* An error. Exit. */
10199 else if (recur <= 1)
10201 /* Known result. Mark as checked and set section flag. */
10202 htab->stub_group[sym_sec->id].toc_off = 1;
10205 sym_sec->makes_toc_func_call = 1;
10212 /* Unknown result. Continue checking. */
10218 if (local_syms != NULL
10219 && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms))
10221 if (elf_section_data (isec)->relocs != relstart)
10227 /* The linker repeatedly calls this function for each input section,
10228 in the order that input sections are linked into output sections.
10229 Build lists of input sections to determine groupings between which
10230 we may insert linker stubs. */
10233 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
10235 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10237 if ((isec->output_section->flags & SEC_CODE) != 0
10238 && isec->output_section->index <= htab->top_index)
10240 asection **list = htab->input_list + isec->output_section->index;
10241 /* Steal the link_sec pointer for our list. */
10242 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10243 /* This happens to make the list in reverse order,
10244 which is what we want. */
10245 PREV_SEC (isec) = *list;
10249 if (htab->multi_toc_needed)
10251 /* If a code section has a function that uses the TOC then we need
10252 to use the right TOC (obviously). Also, make sure that .opd gets
10253 the correct TOC value for R_PPC64_TOC relocs that don't have or
10254 can't find their function symbol (shouldn't ever happen now).
10255 Also specially treat .fixup for the linux kernel. .fixup
10256 contains branches, but only back to the function that hit an
10258 if (isec->has_toc_reloc
10259 || (isec->flags & SEC_CODE) == 0
10260 || strcmp (isec->name, ".fixup") == 0)
10262 if (elf_gp (isec->owner) != 0)
10263 htab->toc_curr = elf_gp (isec->owner);
10265 else if (htab->stub_group[isec->id].toc_off == 0)
10267 int ret = toc_adjusting_stub_needed (info, isec);
10271 isec->makes_toc_func_call = ret & 1;
10275 /* Functions that don't use the TOC can belong in any TOC group.
10276 Use the last TOC base. This happens to make _init and _fini
10278 htab->stub_group[isec->id].toc_off = htab->toc_curr;
10282 /* See whether we can group stub sections together. Grouping stub
10283 sections may result in fewer stubs. More importantly, we need to
10284 put all .init* and .fini* stubs at the beginning of the .init or
10285 .fini output sections respectively, because glibc splits the
10286 _init and _fini functions into multiple parts. Putting a stub in
10287 the middle of a function is not a good idea. */
10290 group_sections (struct ppc_link_hash_table *htab,
10291 bfd_size_type stub_group_size,
10292 bfd_boolean stubs_always_before_branch)
10295 bfd_size_type stub14_group_size;
10296 bfd_boolean suppress_size_errors;
10298 suppress_size_errors = FALSE;
10299 stub14_group_size = stub_group_size;
10300 if (stub_group_size == 1)
10302 /* Default values. */
10303 if (stubs_always_before_branch)
10305 stub_group_size = 0x1e00000;
10306 stub14_group_size = 0x7800;
10310 stub_group_size = 0x1c00000;
10311 stub14_group_size = 0x7000;
10313 suppress_size_errors = TRUE;
10316 list = htab->input_list + htab->top_index;
10319 asection *tail = *list;
10320 while (tail != NULL)
10324 bfd_size_type total;
10325 bfd_boolean big_sec;
10329 total = tail->size;
10330 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
10331 ? stub14_group_size : stub_group_size);
10332 if (big_sec && !suppress_size_errors)
10333 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
10334 tail->owner, tail);
10335 curr_toc = htab->stub_group[tail->id].toc_off;
10337 while ((prev = PREV_SEC (curr)) != NULL
10338 && ((total += curr->output_offset - prev->output_offset)
10339 < (ppc64_elf_section_data (prev)->has_14bit_branch
10340 ? stub14_group_size : stub_group_size))
10341 && htab->stub_group[prev->id].toc_off == curr_toc)
10344 /* OK, the size from the start of CURR to the end is less
10345 than stub_group_size and thus can be handled by one stub
10346 section. (or the tail section is itself larger than
10347 stub_group_size, in which case we may be toast.) We
10348 should really be keeping track of the total size of stubs
10349 added here, as stubs contribute to the final output
10350 section size. That's a little tricky, and this way will
10351 only break if stubs added make the total size more than
10352 2^25, ie. for the default stub_group_size, if stubs total
10353 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10356 prev = PREV_SEC (tail);
10357 /* Set up this stub group. */
10358 htab->stub_group[tail->id].link_sec = curr;
10360 while (tail != curr && (tail = prev) != NULL);
10362 /* But wait, there's more! Input sections up to stub_group_size
10363 bytes before the stub section can be handled by it too.
10364 Don't do this if we have a really large section after the
10365 stubs, as adding more stubs increases the chance that
10366 branches may not reach into the stub section. */
10367 if (!stubs_always_before_branch && !big_sec)
10370 while (prev != NULL
10371 && ((total += tail->output_offset - prev->output_offset)
10372 < (ppc64_elf_section_data (prev)->has_14bit_branch
10373 ? stub14_group_size : stub_group_size))
10374 && htab->stub_group[prev->id].toc_off == curr_toc)
10377 prev = PREV_SEC (tail);
10378 htab->stub_group[tail->id].link_sec = curr;
10384 while (list-- != htab->input_list);
10385 free (htab->input_list);
10389 /* Determine and set the size of the stub section for a final link.
10391 The basic idea here is to examine all the relocations looking for
10392 PC-relative calls to a target that is unreachable with a "bl"
10396 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size)
10398 bfd_size_type stub_group_size;
10399 bfd_boolean stubs_always_before_branch;
10400 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10402 stubs_always_before_branch = group_size < 0;
10403 if (group_size < 0)
10404 stub_group_size = -group_size;
10406 stub_group_size = group_size;
10408 group_sections (htab, stub_group_size, stubs_always_before_branch);
10413 unsigned int bfd_indx;
10414 asection *stub_sec;
10416 htab->stub_iteration += 1;
10418 for (input_bfd = info->input_bfds, bfd_indx = 0;
10420 input_bfd = input_bfd->link_next, bfd_indx++)
10422 Elf_Internal_Shdr *symtab_hdr;
10424 Elf_Internal_Sym *local_syms = NULL;
10426 if (!is_ppc64_elf (input_bfd))
10429 /* We'll need the symbol table in a second. */
10430 symtab_hdr = &elf_symtab_hdr (input_bfd);
10431 if (symtab_hdr->sh_info == 0)
10434 /* Walk over each section attached to the input bfd. */
10435 for (section = input_bfd->sections;
10437 section = section->next)
10439 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
10441 /* If there aren't any relocs, then there's nothing more
10443 if ((section->flags & SEC_RELOC) == 0
10444 || (section->flags & SEC_ALLOC) == 0
10445 || (section->flags & SEC_LOAD) == 0
10446 || (section->flags & SEC_CODE) == 0
10447 || section->reloc_count == 0)
10450 /* If this section is a link-once section that will be
10451 discarded, then don't create any stubs. */
10452 if (section->output_section == NULL
10453 || section->output_section->owner != info->output_bfd)
10456 /* Get the relocs. */
10458 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
10459 info->keep_memory);
10460 if (internal_relocs == NULL)
10461 goto error_ret_free_local;
10463 /* Now examine each relocation. */
10464 irela = internal_relocs;
10465 irelaend = irela + section->reloc_count;
10466 for (; irela < irelaend; irela++)
10468 enum elf_ppc64_reloc_type r_type;
10469 unsigned int r_indx;
10470 enum ppc_stub_type stub_type;
10471 struct ppc_stub_hash_entry *stub_entry;
10472 asection *sym_sec, *code_sec;
10473 bfd_vma sym_value, code_value;
10474 bfd_vma destination;
10475 bfd_boolean ok_dest;
10476 struct ppc_link_hash_entry *hash;
10477 struct ppc_link_hash_entry *fdh;
10478 struct elf_link_hash_entry *h;
10479 Elf_Internal_Sym *sym;
10481 const asection *id_sec;
10482 struct _opd_sec_data *opd;
10483 struct plt_entry *plt_ent;
10485 r_type = ELF64_R_TYPE (irela->r_info);
10486 r_indx = ELF64_R_SYM (irela->r_info);
10488 if (r_type >= R_PPC64_max)
10490 bfd_set_error (bfd_error_bad_value);
10491 goto error_ret_free_internal;
10494 /* Only look for stubs on branch instructions. */
10495 if (r_type != R_PPC64_REL24
10496 && r_type != R_PPC64_REL14
10497 && r_type != R_PPC64_REL14_BRTAKEN
10498 && r_type != R_PPC64_REL14_BRNTAKEN)
10501 /* Now determine the call target, its name, value,
10503 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
10504 r_indx, input_bfd))
10505 goto error_ret_free_internal;
10506 hash = (struct ppc_link_hash_entry *) h;
10513 sym_value = sym->st_value;
10516 else if (hash->elf.root.type == bfd_link_hash_defined
10517 || hash->elf.root.type == bfd_link_hash_defweak)
10519 sym_value = hash->elf.root.u.def.value;
10520 if (sym_sec->output_section != NULL)
10523 else if (hash->elf.root.type == bfd_link_hash_undefweak
10524 || hash->elf.root.type == bfd_link_hash_undefined)
10526 /* Recognise an old ABI func code entry sym, and
10527 use the func descriptor sym instead if it is
10529 if (hash->elf.root.root.string[0] == '.'
10530 && (fdh = lookup_fdh (hash, htab)) != NULL)
10532 if (fdh->elf.root.type == bfd_link_hash_defined
10533 || fdh->elf.root.type == bfd_link_hash_defweak)
10535 sym_sec = fdh->elf.root.u.def.section;
10536 sym_value = fdh->elf.root.u.def.value;
10537 if (sym_sec->output_section != NULL)
10546 bfd_set_error (bfd_error_bad_value);
10547 goto error_ret_free_internal;
10553 sym_value += irela->r_addend;
10554 destination = (sym_value
10555 + sym_sec->output_offset
10556 + sym_sec->output_section->vma);
10559 code_sec = sym_sec;
10560 code_value = sym_value;
10561 opd = get_opd_info (sym_sec);
10566 if (hash == NULL && opd->adjust != NULL)
10568 long adjust = opd->adjust[sym_value / 8];
10571 code_value += adjust;
10572 sym_value += adjust;
10574 dest = opd_entry_value (sym_sec, sym_value,
10575 &code_sec, &code_value);
10576 if (dest != (bfd_vma) -1)
10578 destination = dest;
10581 /* Fixup old ABI sym to point at code
10583 hash->elf.root.type = bfd_link_hash_defweak;
10584 hash->elf.root.u.def.section = code_sec;
10585 hash->elf.root.u.def.value = code_value;
10590 /* Determine what (if any) linker stub is needed. */
10592 stub_type = ppc_type_of_stub (section, irela, &hash,
10593 &plt_ent, destination);
10595 if (stub_type != ppc_stub_plt_call)
10597 /* Check whether we need a TOC adjusting stub.
10598 Since the linker pastes together pieces from
10599 different object files when creating the
10600 _init and _fini functions, it may be that a
10601 call to what looks like a local sym is in
10602 fact a call needing a TOC adjustment. */
10603 if (code_sec != NULL
10604 && code_sec->output_section != NULL
10605 && (htab->stub_group[code_sec->id].toc_off
10606 != htab->stub_group[section->id].toc_off)
10607 && (code_sec->has_toc_reloc
10608 || code_sec->makes_toc_func_call))
10609 stub_type = ppc_stub_long_branch_r2off;
10612 if (stub_type == ppc_stub_none)
10615 /* __tls_get_addr calls might be eliminated. */
10616 if (stub_type != ppc_stub_plt_call
10618 && (hash == htab->tls_get_addr
10619 || hash == htab->tls_get_addr_fd)
10620 && section->has_tls_reloc
10621 && irela != internal_relocs)
10623 /* Get tls info. */
10626 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
10627 irela - 1, input_bfd))
10628 goto error_ret_free_internal;
10629 if (*tls_mask != 0)
10633 /* Support for grouping stub sections. */
10634 id_sec = htab->stub_group[section->id].link_sec;
10636 /* Get the name of this stub. */
10637 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
10639 goto error_ret_free_internal;
10641 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
10642 stub_name, FALSE, FALSE);
10643 if (stub_entry != NULL)
10645 /* The proper stub has already been created. */
10650 stub_entry = ppc_add_stub (stub_name, section, htab);
10651 if (stub_entry == NULL)
10654 error_ret_free_internal:
10655 if (elf_section_data (section)->relocs == NULL)
10656 free (internal_relocs);
10657 error_ret_free_local:
10658 if (local_syms != NULL
10659 && (symtab_hdr->contents
10660 != (unsigned char *) local_syms))
10665 stub_entry->stub_type = stub_type;
10666 if (stub_type != ppc_stub_plt_call)
10668 stub_entry->target_value = code_value;
10669 stub_entry->target_section = code_sec;
10673 stub_entry->target_value = sym_value;
10674 stub_entry->target_section = sym_sec;
10676 stub_entry->h = hash;
10677 stub_entry->plt_ent = plt_ent;
10678 stub_entry->addend = irela->r_addend;
10680 if (stub_entry->h != NULL)
10681 htab->stub_globals += 1;
10684 /* We're done with the internal relocs, free them. */
10685 if (elf_section_data (section)->relocs != internal_relocs)
10686 free (internal_relocs);
10689 if (local_syms != NULL
10690 && symtab_hdr->contents != (unsigned char *) local_syms)
10692 if (!info->keep_memory)
10695 symtab_hdr->contents = (unsigned char *) local_syms;
10699 /* We may have added some stubs. Find out the new size of the
10701 for (stub_sec = htab->stub_bfd->sections;
10703 stub_sec = stub_sec->next)
10704 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
10706 stub_sec->rawsize = stub_sec->size;
10707 stub_sec->size = 0;
10708 stub_sec->reloc_count = 0;
10709 stub_sec->flags &= ~SEC_RELOC;
10712 htab->brlt->size = 0;
10713 htab->brlt->reloc_count = 0;
10714 htab->brlt->flags &= ~SEC_RELOC;
10715 if (htab->relbrlt != NULL)
10716 htab->relbrlt->size = 0;
10718 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
10720 if (info->emitrelocations
10721 && htab->glink != NULL && htab->glink->size != 0)
10723 htab->glink->reloc_count = 1;
10724 htab->glink->flags |= SEC_RELOC;
10727 for (stub_sec = htab->stub_bfd->sections;
10729 stub_sec = stub_sec->next)
10730 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
10731 && stub_sec->rawsize != stub_sec->size)
10734 /* Exit from this loop when no stubs have been added, and no stubs
10735 have changed size. */
10736 if (stub_sec == NULL)
10739 /* Ask the linker to do its stuff. */
10740 (*htab->layout_sections_again) ();
10743 /* It would be nice to strip htab->brlt from the output if the
10744 section is empty, but it's too late. If we strip sections here,
10745 the dynamic symbol table is corrupted since the section symbol
10746 for the stripped section isn't written. */
10751 /* Called after we have determined section placement. If sections
10752 move, we'll be called again. Provide a value for TOCstart. */
10755 ppc64_elf_toc (bfd *obfd)
10760 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
10761 order. The TOC starts where the first of these sections starts. */
10762 s = bfd_get_section_by_name (obfd, ".got");
10763 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10764 s = bfd_get_section_by_name (obfd, ".toc");
10765 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10766 s = bfd_get_section_by_name (obfd, ".tocbss");
10767 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10768 s = bfd_get_section_by_name (obfd, ".plt");
10769 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10771 /* This may happen for
10772 o references to TOC base (SYM@toc / TOC[tc0]) without a
10774 o bad linker script
10775 o --gc-sections and empty TOC sections
10777 FIXME: Warn user? */
10779 /* Look for a likely section. We probably won't even be
10781 for (s = obfd->sections; s != NULL; s = s->next)
10782 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
10784 == (SEC_ALLOC | SEC_SMALL_DATA))
10787 for (s = obfd->sections; s != NULL; s = s->next)
10788 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
10789 == (SEC_ALLOC | SEC_SMALL_DATA))
10792 for (s = obfd->sections; s != NULL; s = s->next)
10793 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
10797 for (s = obfd->sections; s != NULL; s = s->next)
10798 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
10804 TOCstart = s->output_section->vma + s->output_offset;
10809 /* Build all the stubs associated with the current output file.
10810 The stubs are kept in a hash table attached to the main linker
10811 hash table. This function is called via gldelf64ppc_finish. */
10814 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
10815 struct bfd_link_info *info,
10818 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10819 asection *stub_sec;
10821 int stub_sec_count = 0;
10823 htab->emit_stub_syms = emit_stub_syms;
10825 /* Allocate memory to hold the linker stubs. */
10826 for (stub_sec = htab->stub_bfd->sections;
10828 stub_sec = stub_sec->next)
10829 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
10830 && stub_sec->size != 0)
10832 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
10833 if (stub_sec->contents == NULL)
10835 /* We want to check that built size is the same as calculated
10836 size. rawsize is a convenient location to use. */
10837 stub_sec->rawsize = stub_sec->size;
10838 stub_sec->size = 0;
10841 if (htab->glink != NULL && htab->glink->size != 0)
10846 /* Build the .glink plt call stub. */
10847 if (htab->emit_stub_syms)
10849 struct elf_link_hash_entry *h;
10850 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
10851 TRUE, FALSE, FALSE);
10854 if (h->root.type == bfd_link_hash_new)
10856 h->root.type = bfd_link_hash_defined;
10857 h->root.u.def.section = htab->glink;
10858 h->root.u.def.value = 8;
10859 h->ref_regular = 1;
10860 h->def_regular = 1;
10861 h->ref_regular_nonweak = 1;
10862 h->forced_local = 1;
10866 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
10867 if (info->emitrelocations)
10869 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
10872 r->r_offset = (htab->glink->output_offset
10873 + htab->glink->output_section->vma);
10874 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
10875 r->r_addend = plt0;
10877 p = htab->glink->contents;
10878 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
10879 bfd_put_64 (htab->glink->owner, plt0, p);
10881 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
10883 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
10885 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
10887 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
10889 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
10891 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
10893 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
10895 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
10897 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
10899 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
10901 bfd_put_32 (htab->glink->owner, BCTR, p);
10903 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
10905 bfd_put_32 (htab->glink->owner, NOP, p);
10909 /* Build the .glink lazy link call stubs. */
10911 while (p < htab->glink->contents + htab->glink->size)
10915 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
10920 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
10922 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
10925 bfd_put_32 (htab->glink->owner,
10926 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
10930 htab->glink->rawsize = p - htab->glink->contents;
10933 if (htab->brlt->size != 0)
10935 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
10937 if (htab->brlt->contents == NULL)
10940 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
10942 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
10943 htab->relbrlt->size);
10944 if (htab->relbrlt->contents == NULL)
10948 /* Build the stubs as directed by the stub hash table. */
10949 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
10951 if (htab->relbrlt != NULL)
10952 htab->relbrlt->reloc_count = 0;
10954 for (stub_sec = htab->stub_bfd->sections;
10956 stub_sec = stub_sec->next)
10957 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
10959 stub_sec_count += 1;
10960 if (stub_sec->rawsize != stub_sec->size)
10964 if (stub_sec != NULL
10965 || htab->glink->rawsize != htab->glink->size)
10967 htab->stub_error = TRUE;
10968 (*_bfd_error_handler) (_("stubs don't match calculated size"));
10971 if (htab->stub_error)
10976 *stats = bfd_malloc (500);
10977 if (*stats == NULL)
10980 sprintf (*stats, _("linker stubs in %u group%s\n"
10982 " toc adjust %lu\n"
10983 " long branch %lu\n"
10984 " long toc adj %lu\n"
10987 stub_sec_count == 1 ? "" : "s",
10988 htab->stub_count[ppc_stub_long_branch - 1],
10989 htab->stub_count[ppc_stub_long_branch_r2off - 1],
10990 htab->stub_count[ppc_stub_plt_branch - 1],
10991 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
10992 htab->stub_count[ppc_stub_plt_call - 1]);
10997 /* This function undoes the changes made by add_symbol_adjust. */
11000 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11002 struct ppc_link_hash_entry *eh;
11004 if (h->root.type == bfd_link_hash_indirect)
11007 if (h->root.type == bfd_link_hash_warning)
11008 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11010 eh = (struct ppc_link_hash_entry *) h;
11011 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
11014 eh->elf.root.type = bfd_link_hash_undefined;
11019 ppc64_elf_restore_symbols (struct bfd_link_info *info)
11021 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11022 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
11025 /* What to do when ld finds relocations against symbols defined in
11026 discarded sections. */
11028 static unsigned int
11029 ppc64_elf_action_discarded (asection *sec)
11031 if (strcmp (".opd", sec->name) == 0)
11034 if (strcmp (".toc", sec->name) == 0)
11037 if (strcmp (".toc1", sec->name) == 0)
11040 return _bfd_elf_default_action_discarded (sec);
11043 /* The RELOCATE_SECTION function is called by the ELF backend linker
11044 to handle the relocations for a section.
11046 The relocs are always passed as Rela structures; if the section
11047 actually uses Rel structures, the r_addend field will always be
11050 This function is responsible for adjust the section contents as
11051 necessary, and (if using Rela relocs and generating a
11052 relocatable output file) adjusting the reloc addend as
11055 This function does not have to worry about setting the reloc
11056 address or the reloc symbol index.
11058 LOCAL_SYMS is a pointer to the swapped in local symbols.
11060 LOCAL_SECTIONS is an array giving the section in the input file
11061 corresponding to the st_shndx field of each local symbol.
11063 The global hash table entry for the global symbols can be found
11064 via elf_sym_hashes (input_bfd).
11066 When generating relocatable output, this function must handle
11067 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11068 going to be the section symbol corresponding to the output
11069 section, which means that the addend must be adjusted
11073 ppc64_elf_relocate_section (bfd *output_bfd,
11074 struct bfd_link_info *info,
11076 asection *input_section,
11077 bfd_byte *contents,
11078 Elf_Internal_Rela *relocs,
11079 Elf_Internal_Sym *local_syms,
11080 asection **local_sections)
11082 struct ppc_link_hash_table *htab;
11083 Elf_Internal_Shdr *symtab_hdr;
11084 struct elf_link_hash_entry **sym_hashes;
11085 Elf_Internal_Rela *rel;
11086 Elf_Internal_Rela *relend;
11087 Elf_Internal_Rela outrel;
11089 struct got_entry **local_got_ents;
11091 bfd_boolean ret = TRUE;
11092 bfd_boolean is_opd;
11093 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11094 bfd_boolean is_power4 = FALSE;
11095 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
11097 /* Initialize howto table if needed. */
11098 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
11101 htab = ppc_hash_table (info);
11103 /* Don't relocate stub sections. */
11104 if (input_section->owner == htab->stub_bfd)
11107 BFD_ASSERT (is_ppc64_elf (input_bfd));
11109 local_got_ents = elf_local_got_ents (input_bfd);
11110 TOCstart = elf_gp (output_bfd);
11111 symtab_hdr = &elf_symtab_hdr (input_bfd);
11112 sym_hashes = elf_sym_hashes (input_bfd);
11113 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
11116 relend = relocs + input_section->reloc_count;
11117 for (; rel < relend; rel++)
11119 enum elf_ppc64_reloc_type r_type;
11120 bfd_vma addend, orig_addend;
11121 bfd_reloc_status_type r;
11122 Elf_Internal_Sym *sym;
11124 struct elf_link_hash_entry *h_elf;
11125 struct ppc_link_hash_entry *h;
11126 struct ppc_link_hash_entry *fdh;
11127 const char *sym_name;
11128 unsigned long r_symndx, toc_symndx;
11129 bfd_vma toc_addend;
11130 char tls_mask, tls_gd, tls_type;
11132 bfd_vma relocation;
11133 bfd_boolean unresolved_reloc;
11134 bfd_boolean warned;
11135 unsigned long insn, mask;
11136 struct ppc_stub_hash_entry *stub_entry;
11137 bfd_vma max_br_offset;
11140 r_type = ELF64_R_TYPE (rel->r_info);
11141 r_symndx = ELF64_R_SYM (rel->r_info);
11143 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11144 symbol of the previous ADDR64 reloc. The symbol gives us the
11145 proper TOC base to use. */
11146 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
11148 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
11150 r_symndx = ELF64_R_SYM (rel[-1].r_info);
11156 unresolved_reloc = FALSE;
11158 orig_addend = rel->r_addend;
11160 if (r_symndx < symtab_hdr->sh_info)
11162 /* It's a local symbol. */
11163 struct _opd_sec_data *opd;
11165 sym = local_syms + r_symndx;
11166 sec = local_sections[r_symndx];
11167 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
11168 sym_type = ELF64_ST_TYPE (sym->st_info);
11169 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
11170 opd = get_opd_info (sec);
11171 if (opd != NULL && opd->adjust != NULL)
11173 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
11178 /* If this is a relocation against the opd section sym
11179 and we have edited .opd, adjust the reloc addend so
11180 that ld -r and ld --emit-relocs output is correct.
11181 If it is a reloc against some other .opd symbol,
11182 then the symbol value will be adjusted later. */
11183 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
11184 rel->r_addend += adjust;
11186 relocation += adjust;
11192 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
11193 r_symndx, symtab_hdr, sym_hashes,
11194 h_elf, sec, relocation,
11195 unresolved_reloc, warned);
11196 sym_name = h_elf->root.root.string;
11197 sym_type = h_elf->type;
11199 h = (struct ppc_link_hash_entry *) h_elf;
11201 if (sec != NULL && elf_discarded_section (sec))
11203 /* For relocs against symbols from removed linkonce sections,
11204 or sections discarded by a linker script, we just want the
11205 section contents zeroed. Avoid any special processing. */
11206 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
11207 contents + rel->r_offset);
11213 if (info->relocatable)
11216 /* TLS optimizations. Replace instruction sequences and relocs
11217 based on information we collected in tls_optimize. We edit
11218 RELOCS so that --emit-relocs will output something sensible
11219 for the final instruction stream. */
11224 tls_mask = h->tls_mask;
11225 else if (local_got_ents != NULL)
11227 struct plt_entry **local_plt = (struct plt_entry **)
11228 (local_got_ents + symtab_hdr->sh_info);
11229 char *lgot_masks = (char *)
11230 (local_plt + symtab_hdr->sh_info);
11231 tls_mask = lgot_masks[r_symndx];
11234 && (r_type == R_PPC64_TLS
11235 || r_type == R_PPC64_TLSGD
11236 || r_type == R_PPC64_TLSLD))
11238 /* Check for toc tls entries. */
11241 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11242 &local_syms, rel, input_bfd))
11246 tls_mask = *toc_tls;
11249 /* Check that tls relocs are used with tls syms, and non-tls
11250 relocs are used with non-tls syms. */
11252 && r_type != R_PPC64_NONE
11254 || h->elf.root.type == bfd_link_hash_defined
11255 || h->elf.root.type == bfd_link_hash_defweak)
11256 && (IS_PPC64_TLS_RELOC (r_type)
11257 != (sym_type == STT_TLS
11258 || (sym_type == STT_SECTION
11259 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
11262 && (r_type == R_PPC64_TLS
11263 || r_type == R_PPC64_TLSGD
11264 || r_type == R_PPC64_TLSLD))
11265 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11268 (*_bfd_error_handler)
11269 (!IS_PPC64_TLS_RELOC (r_type)
11270 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11271 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11274 (long) rel->r_offset,
11275 ppc64_elf_howto_table[r_type]->name,
11279 /* Ensure reloc mapping code below stays sane. */
11280 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
11281 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
11282 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
11283 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
11284 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
11285 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
11286 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
11287 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
11288 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
11289 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
11297 case R_PPC64_TOC16:
11298 case R_PPC64_TOC16_LO:
11299 case R_PPC64_TOC16_DS:
11300 case R_PPC64_TOC16_LO_DS:
11302 /* Check for toc tls entries. */
11306 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11307 &local_syms, rel, input_bfd);
11313 tls_mask = *toc_tls;
11314 if (r_type == R_PPC64_TOC16_DS
11315 || r_type == R_PPC64_TOC16_LO_DS)
11318 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
11323 /* If we found a GD reloc pair, then we might be
11324 doing a GD->IE transition. */
11327 tls_gd = TLS_TPRELGD;
11328 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11331 else if (retval == 3)
11333 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11341 case R_PPC64_GOT_TPREL16_DS:
11342 case R_PPC64_GOT_TPREL16_LO_DS:
11344 && (tls_mask & TLS_TPREL) == 0)
11347 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11349 insn |= 0x3c0d0000; /* addis 0,13,0 */
11350 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11351 r_type = R_PPC64_TPREL16_HA;
11352 if (toc_symndx != 0)
11354 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11355 rel->r_addend = toc_addend;
11356 /* We changed the symbol. Start over in order to
11357 get h, sym, sec etc. right. */
11362 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11368 && (tls_mask & TLS_TPREL) == 0)
11370 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
11371 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
11374 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11375 /* Was PPC64_TLS which sits on insn boundary, now
11376 PPC64_TPREL16_LO which is at low-order half-word. */
11377 rel->r_offset += d_offset;
11378 r_type = R_PPC64_TPREL16_LO;
11379 if (toc_symndx != 0)
11381 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11382 rel->r_addend = toc_addend;
11383 /* We changed the symbol. Start over in order to
11384 get h, sym, sec etc. right. */
11389 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11393 case R_PPC64_GOT_TLSGD16_HI:
11394 case R_PPC64_GOT_TLSGD16_HA:
11395 tls_gd = TLS_TPRELGD;
11396 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11400 case R_PPC64_GOT_TLSLD16_HI:
11401 case R_PPC64_GOT_TLSLD16_HA:
11402 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11405 if ((tls_mask & tls_gd) != 0)
11406 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11407 + R_PPC64_GOT_TPREL16_DS);
11410 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11411 rel->r_offset -= d_offset;
11412 r_type = R_PPC64_NONE;
11414 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11418 case R_PPC64_GOT_TLSGD16:
11419 case R_PPC64_GOT_TLSGD16_LO:
11420 tls_gd = TLS_TPRELGD;
11421 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11425 case R_PPC64_GOT_TLSLD16:
11426 case R_PPC64_GOT_TLSLD16_LO:
11427 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11429 unsigned int insn1, insn2, insn3;
11433 offset = (bfd_vma) -1;
11434 /* If not using the newer R_PPC64_TLSGD/LD to mark
11435 __tls_get_addr calls, we must trust that the call
11436 stays with its arg setup insns, ie. that the next
11437 reloc is the __tls_get_addr call associated with
11438 the current reloc. Edit both insns. */
11439 if (input_section->has_tls_get_addr_call
11440 && rel + 1 < relend
11441 && branch_reloc_hash_match (input_bfd, rel + 1,
11442 htab->tls_get_addr,
11443 htab->tls_get_addr_fd))
11444 offset = rel[1].r_offset;
11445 if ((tls_mask & tls_gd) != 0)
11448 insn1 = bfd_get_32 (output_bfd,
11449 contents + rel->r_offset - d_offset);
11450 insn1 &= (1 << 26) - (1 << 2);
11451 insn1 |= 58 << 26; /* ld */
11452 insn2 = 0x7c636a14; /* add 3,3,13 */
11453 if (offset != (bfd_vma) -1)
11454 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11455 if ((tls_mask & TLS_EXPLICIT) == 0)
11456 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11457 + R_PPC64_GOT_TPREL16_DS);
11459 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
11460 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11465 insn1 = 0x3c6d0000; /* addis 3,13,0 */
11466 insn2 = 0x38630000; /* addi 3,3,0 */
11469 /* Was an LD reloc. */
11471 sec = local_sections[toc_symndx];
11473 r_symndx < symtab_hdr->sh_info;
11475 if (local_sections[r_symndx] == sec)
11477 if (r_symndx >= symtab_hdr->sh_info)
11479 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11481 rel->r_addend -= (local_syms[r_symndx].st_value
11482 + sec->output_offset
11483 + sec->output_section->vma);
11485 else if (toc_symndx != 0)
11487 r_symndx = toc_symndx;
11488 rel->r_addend = toc_addend;
11490 r_type = R_PPC64_TPREL16_HA;
11491 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11492 if (offset != (bfd_vma) -1)
11494 rel[1].r_info = ELF64_R_INFO (r_symndx,
11495 R_PPC64_TPREL16_LO);
11496 rel[1].r_offset = offset + d_offset;
11497 rel[1].r_addend = rel->r_addend;
11500 bfd_put_32 (output_bfd, insn1,
11501 contents + rel->r_offset - d_offset);
11502 if (offset != (bfd_vma) -1)
11504 insn3 = bfd_get_32 (output_bfd,
11505 contents + offset + 4);
11507 || insn3 == CROR_151515 || insn3 == CROR_313131)
11509 rel[1].r_offset += 4;
11510 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11513 bfd_put_32 (output_bfd, insn2, contents + offset);
11515 if ((tls_mask & tls_gd) == 0
11516 && (tls_gd == 0 || toc_symndx != 0))
11518 /* We changed the symbol. Start over in order
11519 to get h, sym, sec etc. right. */
11526 case R_PPC64_TLSGD:
11527 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11529 unsigned int insn2, insn3;
11530 bfd_vma offset = rel->r_offset;
11532 if ((tls_mask & TLS_TPRELGD) != 0)
11535 r_type = R_PPC64_NONE;
11536 insn2 = 0x7c636a14; /* add 3,3,13 */
11541 if (toc_symndx != 0)
11543 r_symndx = toc_symndx;
11544 rel->r_addend = toc_addend;
11546 r_type = R_PPC64_TPREL16_LO;
11547 rel->r_offset = offset + d_offset;
11548 insn2 = 0x38630000; /* addi 3,3,0 */
11550 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11551 /* Zap the reloc on the _tls_get_addr call too. */
11552 BFD_ASSERT (offset == rel[1].r_offset);
11553 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11554 insn3 = bfd_get_32 (output_bfd,
11555 contents + offset + 4);
11557 || insn3 == CROR_151515 || insn3 == CROR_313131)
11559 rel->r_offset += 4;
11560 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11563 bfd_put_32 (output_bfd, insn2, contents + offset);
11564 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
11572 case R_PPC64_TLSLD:
11573 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11575 unsigned int insn2, insn3;
11576 bfd_vma offset = rel->r_offset;
11579 sec = local_sections[toc_symndx];
11581 r_symndx < symtab_hdr->sh_info;
11583 if (local_sections[r_symndx] == sec)
11585 if (r_symndx >= symtab_hdr->sh_info)
11587 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11589 rel->r_addend -= (local_syms[r_symndx].st_value
11590 + sec->output_offset
11591 + sec->output_section->vma);
11593 r_type = R_PPC64_TPREL16_LO;
11594 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11595 rel->r_offset = offset + d_offset;
11596 /* Zap the reloc on the _tls_get_addr call too. */
11597 BFD_ASSERT (offset == rel[1].r_offset);
11598 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11599 insn2 = 0x38630000; /* addi 3,3,0 */
11600 insn3 = bfd_get_32 (output_bfd,
11601 contents + offset + 4);
11603 || insn3 == CROR_151515 || insn3 == CROR_313131)
11605 rel->r_offset += 4;
11606 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11609 bfd_put_32 (output_bfd, insn2, contents + offset);
11615 case R_PPC64_DTPMOD64:
11616 if (rel + 1 < relend
11617 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
11618 && rel[1].r_offset == rel->r_offset + 8)
11620 if ((tls_mask & TLS_GD) == 0)
11622 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
11623 if ((tls_mask & TLS_TPRELGD) != 0)
11624 r_type = R_PPC64_TPREL64;
11627 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
11628 r_type = R_PPC64_NONE;
11630 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11635 if ((tls_mask & TLS_LD) == 0)
11637 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
11638 r_type = R_PPC64_NONE;
11639 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11644 case R_PPC64_TPREL64:
11645 if ((tls_mask & TLS_TPREL) == 0)
11647 r_type = R_PPC64_NONE;
11648 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11653 /* Handle other relocations that tweak non-addend part of insn. */
11655 max_br_offset = 1 << 25;
11656 addend = rel->r_addend;
11662 /* Branch taken prediction relocations. */
11663 case R_PPC64_ADDR14_BRTAKEN:
11664 case R_PPC64_REL14_BRTAKEN:
11665 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
11668 /* Branch not taken prediction relocations. */
11669 case R_PPC64_ADDR14_BRNTAKEN:
11670 case R_PPC64_REL14_BRNTAKEN:
11671 insn |= bfd_get_32 (output_bfd,
11672 contents + rel->r_offset) & ~(0x01 << 21);
11675 case R_PPC64_REL14:
11676 max_br_offset = 1 << 15;
11679 case R_PPC64_REL24:
11680 /* Calls to functions with a different TOC, such as calls to
11681 shared objects, need to alter the TOC pointer. This is
11682 done using a linkage stub. A REL24 branching to these
11683 linkage stubs needs to be followed by a nop, as the nop
11684 will be replaced with an instruction to restore the TOC
11690 && h->oh->is_func_descriptor)
11691 fdh = ppc_follow_link (h->oh);
11693 && fdh->elf.plt.plist != NULL)
11695 && sec->output_section != NULL
11696 && sec->id <= htab->top_id
11697 && (htab->stub_group[sec->id].toc_off
11698 != htab->stub_group[input_section->id].toc_off))
11700 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
11701 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
11702 rel, htab)) != NULL
11703 && (stub_entry->stub_type == ppc_stub_plt_call
11704 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
11705 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
11707 bfd_boolean can_plt_call = FALSE;
11709 if (rel->r_offset + 8 <= input_section->size)
11712 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
11714 || nop == CROR_151515 || nop == CROR_313131)
11717 && (h == htab->tls_get_addr_fd
11718 || h == htab->tls_get_addr)
11719 && !htab->no_tls_get_addr_opt)
11721 /* Special stub used, leave nop alone. */
11724 bfd_put_32 (input_bfd, LD_R2_40R1,
11725 contents + rel->r_offset + 4);
11726 can_plt_call = TRUE;
11732 if (stub_entry->stub_type == ppc_stub_plt_call)
11734 /* If this is a plain branch rather than a branch
11735 and link, don't require a nop. However, don't
11736 allow tail calls in a shared library as they
11737 will result in r2 being corrupted. */
11739 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
11740 if (info->executable && (br & 1) == 0)
11741 can_plt_call = TRUE;
11746 && strcmp (h->elf.root.root.string,
11747 ".__libc_start_main") == 0)
11749 /* Allow crt1 branch to go via a toc adjusting stub. */
11750 can_plt_call = TRUE;
11754 if (strcmp (input_section->output_section->name,
11756 || strcmp (input_section->output_section->name,
11758 (*_bfd_error_handler)
11759 (_("%B(%A+0x%lx): automatic multiple TOCs "
11760 "not supported using your crt files; "
11761 "recompile with -mminimal-toc or upgrade gcc"),
11764 (long) rel->r_offset);
11766 (*_bfd_error_handler)
11767 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
11768 "does not allow automatic multiple TOCs; "
11769 "recompile with -mminimal-toc or "
11770 "-fno-optimize-sibling-calls, "
11771 "or make `%s' extern"),
11774 (long) rel->r_offset,
11777 bfd_set_error (bfd_error_bad_value);
11783 && stub_entry->stub_type == ppc_stub_plt_call)
11784 unresolved_reloc = FALSE;
11787 if (stub_entry == NULL
11788 && get_opd_info (sec) != NULL)
11790 /* The branch destination is the value of the opd entry. */
11791 bfd_vma off = (relocation + addend
11792 - sec->output_section->vma
11793 - sec->output_offset);
11794 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
11795 if (dest != (bfd_vma) -1)
11802 /* If the branch is out of reach we ought to have a long
11804 from = (rel->r_offset
11805 + input_section->output_offset
11806 + input_section->output_section->vma);
11808 if (stub_entry == NULL
11809 && (relocation + addend - from + max_br_offset
11810 >= 2 * max_br_offset)
11811 && r_type != R_PPC64_ADDR14_BRTAKEN
11812 && r_type != R_PPC64_ADDR14_BRNTAKEN)
11813 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
11816 if (stub_entry != NULL)
11818 /* Munge up the value and addend so that we call the stub
11819 rather than the procedure directly. */
11820 relocation = (stub_entry->stub_offset
11821 + stub_entry->stub_sec->output_offset
11822 + stub_entry->stub_sec->output_section->vma);
11830 /* Set 'a' bit. This is 0b00010 in BO field for branch
11831 on CR(BI) insns (BO == 001at or 011at), and 0b01000
11832 for branch on CTR insns (BO == 1a00t or 1a01t). */
11833 if ((insn & (0x14 << 21)) == (0x04 << 21))
11834 insn |= 0x02 << 21;
11835 else if ((insn & (0x14 << 21)) == (0x10 << 21))
11836 insn |= 0x08 << 21;
11842 /* Invert 'y' bit if not the default. */
11843 if ((bfd_signed_vma) (relocation + addend - from) < 0)
11844 insn ^= 0x01 << 21;
11847 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11850 /* NOP out calls to undefined weak functions.
11851 We can thus call a weak function without first
11852 checking whether the function is defined. */
11854 && h->elf.root.type == bfd_link_hash_undefweak
11855 && h->elf.dynindx == -1
11856 && r_type == R_PPC64_REL24
11860 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11866 /* Set `addend'. */
11871 (*_bfd_error_handler)
11872 (_("%B: unknown relocation type %d for symbol %s"),
11873 input_bfd, (int) r_type, sym_name);
11875 bfd_set_error (bfd_error_bad_value);
11881 case R_PPC64_TLSGD:
11882 case R_PPC64_TLSLD:
11883 case R_PPC64_GNU_VTINHERIT:
11884 case R_PPC64_GNU_VTENTRY:
11887 /* GOT16 relocations. Like an ADDR16 using the symbol's
11888 address in the GOT as relocation value instead of the
11889 symbol's value itself. Also, create a GOT entry for the
11890 symbol and put the symbol value there. */
11891 case R_PPC64_GOT_TLSGD16:
11892 case R_PPC64_GOT_TLSGD16_LO:
11893 case R_PPC64_GOT_TLSGD16_HI:
11894 case R_PPC64_GOT_TLSGD16_HA:
11895 tls_type = TLS_TLS | TLS_GD;
11898 case R_PPC64_GOT_TLSLD16:
11899 case R_PPC64_GOT_TLSLD16_LO:
11900 case R_PPC64_GOT_TLSLD16_HI:
11901 case R_PPC64_GOT_TLSLD16_HA:
11902 tls_type = TLS_TLS | TLS_LD;
11905 case R_PPC64_GOT_TPREL16_DS:
11906 case R_PPC64_GOT_TPREL16_LO_DS:
11907 case R_PPC64_GOT_TPREL16_HI:
11908 case R_PPC64_GOT_TPREL16_HA:
11909 tls_type = TLS_TLS | TLS_TPREL;
11912 case R_PPC64_GOT_DTPREL16_DS:
11913 case R_PPC64_GOT_DTPREL16_LO_DS:
11914 case R_PPC64_GOT_DTPREL16_HI:
11915 case R_PPC64_GOT_DTPREL16_HA:
11916 tls_type = TLS_TLS | TLS_DTPREL;
11919 case R_PPC64_GOT16:
11920 case R_PPC64_GOT16_LO:
11921 case R_PPC64_GOT16_HI:
11922 case R_PPC64_GOT16_HA:
11923 case R_PPC64_GOT16_DS:
11924 case R_PPC64_GOT16_LO_DS:
11927 /* Relocation is to the entry for this symbol in the global
11932 unsigned long indx = 0;
11933 struct got_entry *ent;
11935 if (tls_type == (TLS_TLS | TLS_LD)
11937 || !h->elf.def_dynamic))
11938 ent = ppc64_tlsld_got (input_bfd);
11944 bfd_boolean dyn = htab->elf.dynamic_sections_created;
11945 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
11948 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
11949 /* This is actually a static link, or it is a
11950 -Bsymbolic link and the symbol is defined
11951 locally, or the symbol was forced to be local
11952 because of a version file. */
11956 indx = h->elf.dynindx;
11957 unresolved_reloc = FALSE;
11959 ent = h->elf.got.glist;
11963 if (local_got_ents == NULL)
11965 ent = local_got_ents[r_symndx];
11968 for (; ent != NULL; ent = ent->next)
11969 if (ent->addend == orig_addend
11970 && ent->owner == input_bfd
11971 && ent->tls_type == tls_type)
11977 if (ent->is_indirect)
11978 ent = ent->got.ent;
11979 offp = &ent->got.offset;
11980 got = ppc64_elf_tdata (ent->owner)->got;
11984 /* The offset must always be a multiple of 8. We use the
11985 least significant bit to record whether we have already
11986 processed this entry. */
11988 if ((off & 1) != 0)
11992 /* Generate relocs for the dynamic linker, except in
11993 the case of TLSLD where we'll use one entry per
12001 ? h->elf.type == STT_GNU_IFUNC
12002 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
12003 if ((info->shared || indx != 0)
12005 || (tls_type == (TLS_TLS | TLS_LD)
12006 && !h->elf.def_dynamic)
12007 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12008 || h->elf.root.type != bfd_link_hash_undefweak))
12009 relgot = ppc64_elf_tdata (ent->owner)->relgot;
12011 relgot = htab->reliplt;
12012 if (relgot != NULL)
12014 outrel.r_offset = (got->output_section->vma
12015 + got->output_offset
12017 outrel.r_addend = addend;
12018 if (tls_type & (TLS_LD | TLS_GD))
12020 outrel.r_addend = 0;
12021 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
12022 if (tls_type == (TLS_TLS | TLS_GD))
12024 loc = relgot->contents;
12025 loc += (relgot->reloc_count++
12026 * sizeof (Elf64_External_Rela));
12027 bfd_elf64_swap_reloca_out (output_bfd,
12029 outrel.r_offset += 8;
12030 outrel.r_addend = addend;
12032 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12035 else if (tls_type == (TLS_TLS | TLS_DTPREL))
12036 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12037 else if (tls_type == (TLS_TLS | TLS_TPREL))
12038 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
12039 else if (indx != 0)
12040 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
12044 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12046 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12048 /* Write the .got section contents for the sake
12050 loc = got->contents + off;
12051 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
12055 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
12057 outrel.r_addend += relocation;
12058 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
12059 outrel.r_addend -= htab->elf.tls_sec->vma;
12061 loc = relgot->contents;
12062 loc += (relgot->reloc_count++
12063 * sizeof (Elf64_External_Rela));
12064 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12067 /* Init the .got section contents here if we're not
12068 emitting a reloc. */
12071 relocation += addend;
12072 if (tls_type == (TLS_TLS | TLS_LD))
12074 else if (tls_type != 0)
12076 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
12077 if (tls_type == (TLS_TLS | TLS_TPREL))
12078 relocation += DTP_OFFSET - TP_OFFSET;
12080 if (tls_type == (TLS_TLS | TLS_GD))
12082 bfd_put_64 (output_bfd, relocation,
12083 got->contents + off + 8);
12088 bfd_put_64 (output_bfd, relocation,
12089 got->contents + off);
12093 if (off >= (bfd_vma) -2)
12096 relocation = got->output_section->vma + got->output_offset + off;
12097 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
12101 case R_PPC64_PLT16_HA:
12102 case R_PPC64_PLT16_HI:
12103 case R_PPC64_PLT16_LO:
12104 case R_PPC64_PLT32:
12105 case R_PPC64_PLT64:
12106 /* Relocation is to the entry for this symbol in the
12107 procedure linkage table. */
12109 /* Resolve a PLT reloc against a local symbol directly,
12110 without using the procedure linkage table. */
12114 /* It's possible that we didn't make a PLT entry for this
12115 symbol. This happens when statically linking PIC code,
12116 or when using -Bsymbolic. Go find a match if there is a
12118 if (htab->plt != NULL)
12120 struct plt_entry *ent;
12121 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
12122 if (ent->addend == orig_addend
12123 && ent->plt.offset != (bfd_vma) -1)
12125 relocation = (htab->plt->output_section->vma
12126 + htab->plt->output_offset
12127 + ent->plt.offset);
12128 unresolved_reloc = FALSE;
12134 /* Relocation value is TOC base. */
12135 relocation = TOCstart;
12137 relocation += htab->stub_group[input_section->id].toc_off;
12138 else if (unresolved_reloc)
12140 else if (sec != NULL && sec->id <= htab->top_id)
12141 relocation += htab->stub_group[sec->id].toc_off;
12143 unresolved_reloc = TRUE;
12146 /* TOC16 relocs. We want the offset relative to the TOC base,
12147 which is the address of the start of the TOC plus 0x8000.
12148 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12150 case R_PPC64_TOC16:
12151 case R_PPC64_TOC16_LO:
12152 case R_PPC64_TOC16_HI:
12153 case R_PPC64_TOC16_DS:
12154 case R_PPC64_TOC16_LO_DS:
12155 case R_PPC64_TOC16_HA:
12156 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
12159 /* Relocate against the beginning of the section. */
12160 case R_PPC64_SECTOFF:
12161 case R_PPC64_SECTOFF_LO:
12162 case R_PPC64_SECTOFF_HI:
12163 case R_PPC64_SECTOFF_DS:
12164 case R_PPC64_SECTOFF_LO_DS:
12165 case R_PPC64_SECTOFF_HA:
12167 addend -= sec->output_section->vma;
12170 case R_PPC64_REL16:
12171 case R_PPC64_REL16_LO:
12172 case R_PPC64_REL16_HI:
12173 case R_PPC64_REL16_HA:
12176 case R_PPC64_REL14:
12177 case R_PPC64_REL14_BRNTAKEN:
12178 case R_PPC64_REL14_BRTAKEN:
12179 case R_PPC64_REL24:
12182 case R_PPC64_TPREL16:
12183 case R_PPC64_TPREL16_LO:
12184 case R_PPC64_TPREL16_HI:
12185 case R_PPC64_TPREL16_HA:
12186 case R_PPC64_TPREL16_DS:
12187 case R_PPC64_TPREL16_LO_DS:
12188 case R_PPC64_TPREL16_HIGHER:
12189 case R_PPC64_TPREL16_HIGHERA:
12190 case R_PPC64_TPREL16_HIGHEST:
12191 case R_PPC64_TPREL16_HIGHESTA:
12193 && h->elf.root.type == bfd_link_hash_undefweak
12194 && h->elf.dynindx == -1)
12196 /* Make this relocation against an undefined weak symbol
12197 resolve to zero. This is really just a tweak, since
12198 code using weak externs ought to check that they are
12199 defined before using them. */
12200 bfd_byte *p = contents + rel->r_offset - d_offset;
12202 insn = bfd_get_32 (output_bfd, p);
12203 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
12205 bfd_put_32 (output_bfd, insn, p);
12208 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12210 /* The TPREL16 relocs shouldn't really be used in shared
12211 libs as they will result in DT_TEXTREL being set, but
12212 support them anyway. */
12216 case R_PPC64_DTPREL16:
12217 case R_PPC64_DTPREL16_LO:
12218 case R_PPC64_DTPREL16_HI:
12219 case R_PPC64_DTPREL16_HA:
12220 case R_PPC64_DTPREL16_DS:
12221 case R_PPC64_DTPREL16_LO_DS:
12222 case R_PPC64_DTPREL16_HIGHER:
12223 case R_PPC64_DTPREL16_HIGHERA:
12224 case R_PPC64_DTPREL16_HIGHEST:
12225 case R_PPC64_DTPREL16_HIGHESTA:
12226 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12229 case R_PPC64_DTPMOD64:
12234 case R_PPC64_TPREL64:
12235 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12238 case R_PPC64_DTPREL64:
12239 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12242 /* Relocations that may need to be propagated if this is a
12244 case R_PPC64_REL30:
12245 case R_PPC64_REL32:
12246 case R_PPC64_REL64:
12247 case R_PPC64_ADDR14:
12248 case R_PPC64_ADDR14_BRNTAKEN:
12249 case R_PPC64_ADDR14_BRTAKEN:
12250 case R_PPC64_ADDR16:
12251 case R_PPC64_ADDR16_DS:
12252 case R_PPC64_ADDR16_HA:
12253 case R_PPC64_ADDR16_HI:
12254 case R_PPC64_ADDR16_HIGHER:
12255 case R_PPC64_ADDR16_HIGHERA:
12256 case R_PPC64_ADDR16_HIGHEST:
12257 case R_PPC64_ADDR16_HIGHESTA:
12258 case R_PPC64_ADDR16_LO:
12259 case R_PPC64_ADDR16_LO_DS:
12260 case R_PPC64_ADDR24:
12261 case R_PPC64_ADDR32:
12262 case R_PPC64_ADDR64:
12263 case R_PPC64_UADDR16:
12264 case R_PPC64_UADDR32:
12265 case R_PPC64_UADDR64:
12267 if ((input_section->flags & SEC_ALLOC) == 0)
12270 if (NO_OPD_RELOCS && is_opd)
12275 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12276 || h->elf.root.type != bfd_link_hash_undefweak)
12277 && (must_be_dyn_reloc (info, r_type)
12278 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
12279 || (ELIMINATE_COPY_RELOCS
12282 && h->elf.dynindx != -1
12283 && !h->elf.non_got_ref
12284 && !h->elf.def_regular)
12287 ? h->elf.type == STT_GNU_IFUNC
12288 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
12290 bfd_boolean skip, relocate;
12294 /* When generating a dynamic object, these relocations
12295 are copied into the output file to be resolved at run
12301 out_off = _bfd_elf_section_offset (output_bfd, info,
12302 input_section, rel->r_offset);
12303 if (out_off == (bfd_vma) -1)
12305 else if (out_off == (bfd_vma) -2)
12306 skip = TRUE, relocate = TRUE;
12307 out_off += (input_section->output_section->vma
12308 + input_section->output_offset);
12309 outrel.r_offset = out_off;
12310 outrel.r_addend = rel->r_addend;
12312 /* Optimize unaligned reloc use. */
12313 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
12314 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
12315 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
12316 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
12317 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
12318 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
12319 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
12320 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
12321 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
12324 memset (&outrel, 0, sizeof outrel);
12325 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
12327 && r_type != R_PPC64_TOC)
12328 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
12331 /* This symbol is local, or marked to become local,
12332 or this is an opd section reloc which must point
12333 at a local function. */
12334 outrel.r_addend += relocation;
12335 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
12337 if (is_opd && h != NULL)
12339 /* Lie about opd entries. This case occurs
12340 when building shared libraries and we
12341 reference a function in another shared
12342 lib. The same thing happens for a weak
12343 definition in an application that's
12344 overridden by a strong definition in a
12345 shared lib. (I believe this is a generic
12346 bug in binutils handling of weak syms.)
12347 In these cases we won't use the opd
12348 entry in this lib. */
12349 unresolved_reloc = FALSE;
12352 && r_type == R_PPC64_ADDR64
12354 ? h->elf.type == STT_GNU_IFUNC
12355 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
12356 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12359 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12361 /* We need to relocate .opd contents for ld.so.
12362 Prelink also wants simple and consistent rules
12363 for relocs. This make all RELATIVE relocs have
12364 *r_offset equal to r_addend. */
12373 ? h->elf.type == STT_GNU_IFUNC
12374 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
12376 (*_bfd_error_handler)
12377 (_("%B(%A+0x%lx): relocation %s for indirect "
12378 "function %s unsupported"),
12381 (long) rel->r_offset,
12382 ppc64_elf_howto_table[r_type]->name,
12386 else if (r_symndx == 0 || bfd_is_abs_section (sec))
12388 else if (sec == NULL || sec->owner == NULL)
12390 bfd_set_error (bfd_error_bad_value);
12397 osec = sec->output_section;
12398 indx = elf_section_data (osec)->dynindx;
12402 if ((osec->flags & SEC_READONLY) == 0
12403 && htab->elf.data_index_section != NULL)
12404 osec = htab->elf.data_index_section;
12406 osec = htab->elf.text_index_section;
12407 indx = elf_section_data (osec)->dynindx;
12409 BFD_ASSERT (indx != 0);
12411 /* We are turning this relocation into one
12412 against a section symbol, so subtract out
12413 the output section's address but not the
12414 offset of the input section in the output
12416 outrel.r_addend -= osec->vma;
12419 outrel.r_info = ELF64_R_INFO (indx, r_type);
12423 sreloc = elf_section_data (input_section)->sreloc;
12424 if (!htab->elf.dynamic_sections_created)
12425 sreloc = htab->reliplt;
12426 if (sreloc == NULL)
12429 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
12432 loc = sreloc->contents;
12433 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
12434 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12436 /* If this reloc is against an external symbol, it will
12437 be computed at runtime, so there's no need to do
12438 anything now. However, for the sake of prelink ensure
12439 that the section contents are a known value. */
12442 unresolved_reloc = FALSE;
12443 /* The value chosen here is quite arbitrary as ld.so
12444 ignores section contents except for the special
12445 case of .opd where the contents might be accessed
12446 before relocation. Choose zero, as that won't
12447 cause reloc overflow. */
12450 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12451 to improve backward compatibility with older
12453 if (r_type == R_PPC64_ADDR64)
12454 addend = outrel.r_addend;
12455 /* Adjust pc_relative relocs to have zero in *r_offset. */
12456 else if (ppc64_elf_howto_table[r_type]->pc_relative)
12457 addend = (input_section->output_section->vma
12458 + input_section->output_offset
12465 case R_PPC64_GLOB_DAT:
12466 case R_PPC64_JMP_SLOT:
12467 case R_PPC64_JMP_IREL:
12468 case R_PPC64_RELATIVE:
12469 /* We shouldn't ever see these dynamic relocs in relocatable
12471 /* Fall through. */
12473 case R_PPC64_PLTGOT16:
12474 case R_PPC64_PLTGOT16_DS:
12475 case R_PPC64_PLTGOT16_HA:
12476 case R_PPC64_PLTGOT16_HI:
12477 case R_PPC64_PLTGOT16_LO:
12478 case R_PPC64_PLTGOT16_LO_DS:
12479 case R_PPC64_PLTREL32:
12480 case R_PPC64_PLTREL64:
12481 /* These ones haven't been implemented yet. */
12483 (*_bfd_error_handler)
12484 (_("%B: relocation %s is not supported for symbol %s."),
12486 ppc64_elf_howto_table[r_type]->name, sym_name);
12488 bfd_set_error (bfd_error_invalid_operation);
12493 /* Do any further special processing. */
12499 case R_PPC64_ADDR16_HA:
12500 case R_PPC64_REL16_HA:
12501 case R_PPC64_ADDR16_HIGHERA:
12502 case R_PPC64_ADDR16_HIGHESTA:
12503 case R_PPC64_TOC16_HA:
12504 case R_PPC64_SECTOFF_HA:
12505 case R_PPC64_TPREL16_HA:
12506 case R_PPC64_DTPREL16_HA:
12507 case R_PPC64_TPREL16_HIGHER:
12508 case R_PPC64_TPREL16_HIGHERA:
12509 case R_PPC64_TPREL16_HIGHEST:
12510 case R_PPC64_TPREL16_HIGHESTA:
12511 case R_PPC64_DTPREL16_HIGHER:
12512 case R_PPC64_DTPREL16_HIGHERA:
12513 case R_PPC64_DTPREL16_HIGHEST:
12514 case R_PPC64_DTPREL16_HIGHESTA:
12515 /* It's just possible that this symbol is a weak symbol
12516 that's not actually defined anywhere. In that case,
12517 'sec' would be NULL, and we should leave the symbol
12518 alone (it will be set to zero elsewhere in the link). */
12523 case R_PPC64_GOT16_HA:
12524 case R_PPC64_PLTGOT16_HA:
12525 case R_PPC64_PLT16_HA:
12526 case R_PPC64_GOT_TLSGD16_HA:
12527 case R_PPC64_GOT_TLSLD16_HA:
12528 case R_PPC64_GOT_TPREL16_HA:
12529 case R_PPC64_GOT_DTPREL16_HA:
12530 /* Add 0x10000 if sign bit in 0:15 is set.
12531 Bits 0:15 are not used. */
12535 case R_PPC64_ADDR16_DS:
12536 case R_PPC64_ADDR16_LO_DS:
12537 case R_PPC64_GOT16_DS:
12538 case R_PPC64_GOT16_LO_DS:
12539 case R_PPC64_PLT16_LO_DS:
12540 case R_PPC64_SECTOFF_DS:
12541 case R_PPC64_SECTOFF_LO_DS:
12542 case R_PPC64_TOC16_DS:
12543 case R_PPC64_TOC16_LO_DS:
12544 case R_PPC64_PLTGOT16_DS:
12545 case R_PPC64_PLTGOT16_LO_DS:
12546 case R_PPC64_GOT_TPREL16_DS:
12547 case R_PPC64_GOT_TPREL16_LO_DS:
12548 case R_PPC64_GOT_DTPREL16_DS:
12549 case R_PPC64_GOT_DTPREL16_LO_DS:
12550 case R_PPC64_TPREL16_DS:
12551 case R_PPC64_TPREL16_LO_DS:
12552 case R_PPC64_DTPREL16_DS:
12553 case R_PPC64_DTPREL16_LO_DS:
12554 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
12556 /* If this reloc is against an lq insn, then the value must be
12557 a multiple of 16. This is somewhat of a hack, but the
12558 "correct" way to do this by defining _DQ forms of all the
12559 _DS relocs bloats all reloc switches in this file. It
12560 doesn't seem to make much sense to use any of these relocs
12561 in data, so testing the insn should be safe. */
12562 if ((insn & (0x3f << 26)) == (56u << 26))
12564 if (((relocation + addend) & mask) != 0)
12566 (*_bfd_error_handler)
12567 (_("%B: error: relocation %s not a multiple of %d"),
12569 ppc64_elf_howto_table[r_type]->name,
12571 bfd_set_error (bfd_error_bad_value);
12578 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
12579 because such sections are not SEC_ALLOC and thus ld.so will
12580 not process them. */
12581 if (unresolved_reloc
12582 && !((input_section->flags & SEC_DEBUGGING) != 0
12583 && h->elf.def_dynamic))
12585 (*_bfd_error_handler)
12586 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
12589 (long) rel->r_offset,
12590 ppc64_elf_howto_table[(int) r_type]->name,
12591 h->elf.root.root.string);
12595 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
12603 if (r != bfd_reloc_ok)
12605 if (sym_name == NULL)
12606 sym_name = "(null)";
12607 if (r == bfd_reloc_overflow)
12612 && h->elf.root.type == bfd_link_hash_undefweak
12613 && ppc64_elf_howto_table[r_type]->pc_relative)
12615 /* Assume this is a call protected by other code that
12616 detects the symbol is undefined. If this is the case,
12617 we can safely ignore the overflow. If not, the
12618 program is hosed anyway, and a little warning isn't
12624 if (!((*info->callbacks->reloc_overflow)
12625 (info, (h ? &h->elf.root : NULL), sym_name,
12626 ppc64_elf_howto_table[r_type]->name,
12627 orig_addend, input_bfd, input_section, rel->r_offset)))
12632 (*_bfd_error_handler)
12633 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
12636 (long) rel->r_offset,
12637 ppc64_elf_howto_table[r_type]->name,
12645 /* If we're emitting relocations, then shortly after this function
12646 returns, reloc offsets and addends for this section will be
12647 adjusted. Worse, reloc symbol indices will be for the output
12648 file rather than the input. Save a copy of the relocs for
12649 opd_entry_value. */
12650 if (is_opd && (info->emitrelocations || info->relocatable))
12653 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
12654 rel = bfd_alloc (input_bfd, amt);
12655 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
12656 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
12659 memcpy (rel, relocs, amt);
12664 /* Adjust the value of any local symbols in opd sections. */
12667 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
12668 const char *name ATTRIBUTE_UNUSED,
12669 Elf_Internal_Sym *elfsym,
12670 asection *input_sec,
12671 struct elf_link_hash_entry *h)
12673 struct _opd_sec_data *opd;
12680 opd = get_opd_info (input_sec);
12681 if (opd == NULL || opd->adjust == NULL)
12684 value = elfsym->st_value - input_sec->output_offset;
12685 if (!info->relocatable)
12686 value -= input_sec->output_section->vma;
12688 adjust = opd->adjust[value / 8];
12692 elfsym->st_value += adjust;
12696 /* Finish up dynamic symbol handling. We set the contents of various
12697 dynamic sections here. */
12700 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
12701 struct bfd_link_info *info,
12702 struct elf_link_hash_entry *h,
12703 Elf_Internal_Sym *sym)
12705 struct ppc_link_hash_table *htab;
12706 struct plt_entry *ent;
12707 Elf_Internal_Rela rela;
12710 htab = ppc_hash_table (info);
12712 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
12713 if (ent->plt.offset != (bfd_vma) -1)
12715 /* This symbol has an entry in the procedure linkage
12716 table. Set it up. */
12717 if (!htab->elf.dynamic_sections_created
12718 || h->dynindx == -1)
12720 BFD_ASSERT (h->type == STT_GNU_IFUNC
12722 && (h->root.type == bfd_link_hash_defined
12723 || h->root.type == bfd_link_hash_defweak));
12724 rela.r_offset = (htab->iplt->output_section->vma
12725 + htab->iplt->output_offset
12726 + ent->plt.offset);
12727 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
12728 rela.r_addend = (h->root.u.def.value
12729 + h->root.u.def.section->output_offset
12730 + h->root.u.def.section->output_section->vma
12732 loc = (htab->reliplt->contents
12733 + (htab->reliplt->reloc_count++
12734 * sizeof (Elf64_External_Rela)));
12738 rela.r_offset = (htab->plt->output_section->vma
12739 + htab->plt->output_offset
12740 + ent->plt.offset);
12741 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
12742 rela.r_addend = ent->addend;
12743 loc = (htab->relplt->contents
12744 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
12745 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
12747 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
12752 /* This symbol needs a copy reloc. Set it up. */
12754 if (h->dynindx == -1
12755 || (h->root.type != bfd_link_hash_defined
12756 && h->root.type != bfd_link_hash_defweak)
12757 || htab->relbss == NULL)
12760 rela.r_offset = (h->root.u.def.value
12761 + h->root.u.def.section->output_section->vma
12762 + h->root.u.def.section->output_offset);
12763 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
12765 loc = htab->relbss->contents;
12766 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
12767 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
12770 /* Mark some specially defined symbols as absolute. */
12771 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
12772 sym->st_shndx = SHN_ABS;
12777 /* Used to decide how to sort relocs in an optimal manner for the
12778 dynamic linker, before writing them out. */
12780 static enum elf_reloc_type_class
12781 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
12783 enum elf_ppc64_reloc_type r_type;
12785 r_type = ELF64_R_TYPE (rela->r_info);
12788 case R_PPC64_RELATIVE:
12789 return reloc_class_relative;
12790 case R_PPC64_JMP_SLOT:
12791 return reloc_class_plt;
12793 return reloc_class_copy;
12795 return reloc_class_normal;
12799 /* Finish up the dynamic sections. */
12802 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
12803 struct bfd_link_info *info)
12805 struct ppc_link_hash_table *htab;
12809 htab = ppc_hash_table (info);
12810 dynobj = htab->elf.dynobj;
12811 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
12813 if (htab->elf.dynamic_sections_created)
12815 Elf64_External_Dyn *dyncon, *dynconend;
12817 if (sdyn == NULL || htab->got == NULL)
12820 dyncon = (Elf64_External_Dyn *) sdyn->contents;
12821 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
12822 for (; dyncon < dynconend; dyncon++)
12824 Elf_Internal_Dyn dyn;
12827 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
12834 case DT_PPC64_GLINK:
12836 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
12837 /* We stupidly defined DT_PPC64_GLINK to be the start
12838 of glink rather than the first entry point, which is
12839 what ld.so needs, and now have a bigger stub to
12840 support automatic multiple TOCs. */
12841 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
12845 s = bfd_get_section_by_name (output_bfd, ".opd");
12848 dyn.d_un.d_ptr = s->vma;
12851 case DT_PPC64_OPDSZ:
12852 s = bfd_get_section_by_name (output_bfd, ".opd");
12855 dyn.d_un.d_val = s->size;
12860 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
12865 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
12869 dyn.d_un.d_val = htab->relplt->size;
12873 /* Don't count procedure linkage table relocs in the
12874 overall reloc count. */
12878 dyn.d_un.d_val -= s->size;
12882 /* We may not be using the standard ELF linker script.
12883 If .rela.plt is the first .rela section, we adjust
12884 DT_RELA to not include it. */
12888 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
12890 dyn.d_un.d_ptr += s->size;
12894 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
12898 if (htab->got != NULL && htab->got->size != 0)
12900 /* Fill in the first entry in the global offset table.
12901 We use it to hold the link-time TOCbase. */
12902 bfd_put_64 (output_bfd,
12903 elf_gp (output_bfd) + TOC_BASE_OFF,
12904 htab->got->contents);
12906 /* Set .got entry size. */
12907 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
12910 if (htab->plt != NULL && htab->plt->size != 0)
12912 /* Set .plt entry size. */
12913 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
12917 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
12918 brlt ourselves if emitrelocations. */
12919 if (htab->brlt != NULL
12920 && htab->brlt->reloc_count != 0
12921 && !_bfd_elf_link_output_relocs (output_bfd,
12923 &elf_section_data (htab->brlt)->rel_hdr,
12924 elf_section_data (htab->brlt)->relocs,
12928 if (htab->glink != NULL
12929 && htab->glink->reloc_count != 0
12930 && !_bfd_elf_link_output_relocs (output_bfd,
12932 &elf_section_data (htab->glink)->rel_hdr,
12933 elf_section_data (htab->glink)->relocs,
12937 /* We need to handle writing out multiple GOT sections ourselves,
12938 since we didn't add them to DYNOBJ. We know dynobj is the first
12940 while ((dynobj = dynobj->link_next) != NULL)
12944 if (!is_ppc64_elf (dynobj))
12947 s = ppc64_elf_tdata (dynobj)->got;
12950 && s->output_section != bfd_abs_section_ptr
12951 && !bfd_set_section_contents (output_bfd, s->output_section,
12952 s->contents, s->output_offset,
12955 s = ppc64_elf_tdata (dynobj)->relgot;
12958 && s->output_section != bfd_abs_section_ptr
12959 && !bfd_set_section_contents (output_bfd, s->output_section,
12960 s->contents, s->output_offset,
12968 #include "elf64-target.h"