1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012 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"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 static bfd_vma opd_entry_value
58 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_post_process_headers _bfd_elf_set_osabi
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE 24
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
131 /* TOC base pointers offset from start of TOC. */
132 #define TOC_BASE_OFF 0x8000
134 /* Offset of tp and dtp pointers from start of TLS block. */
135 #define TP_OFFSET 0x7000
136 #define DTP_OFFSET 0x8000
138 /* .plt call stub instructions. The normal stub is like this, but
139 sometimes the .plt entry crosses a 64k boundary and we need to
140 insert an addi to adjust r12. */
141 #define PLT_CALL_STUB_SIZE (7*4)
142 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
143 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
144 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
145 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
146 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
147 /* ld %r11,xxx+16@l(%r12) */
148 #define BCTR 0x4e800420 /* bctr */
151 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
152 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
153 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
154 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
156 #define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
157 #define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
158 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
159 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
160 #define BNECTR 0x4ca20420 /* bnectr+ */
161 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
163 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
164 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
166 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
168 /* glink call stub instructions. We enter with the index in R0. */
169 #define GLINK_CALL_STUB_SIZE (16*4)
173 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
174 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
176 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
177 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
178 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
187 #define NOP 0x60000000
189 /* Some other nops. */
190 #define CROR_151515 0x4def7b82
191 #define CROR_313131 0x4ffffb82
193 /* .glink entries for the first 32k functions are two instructions. */
194 #define LI_R0_0 0x38000000 /* li %r0,0 */
195 #define B_DOT 0x48000000 /* b . */
197 /* After that, we need two instructions to load the index, followed by
199 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
200 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
202 /* Instructions used by the save and restore reg functions. */
203 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
204 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
205 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
206 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
207 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
208 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
209 #define LI_R12_0 0x39800000 /* li %r12,0 */
210 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
211 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
212 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
213 #define BLR 0x4e800020 /* blr */
215 /* Since .opd is an array of descriptors and each entry will end up
216 with identical R_PPC64_RELATIVE relocs, there is really no need to
217 propagate .opd relocs; The dynamic linker should be taught to
218 relocate .opd without reloc entries. */
219 #ifndef NO_OPD_RELOCS
220 #define NO_OPD_RELOCS 0
223 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
225 /* Relocation HOWTO's. */
226 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
228 static reloc_howto_type ppc64_elf_howto_raw[] = {
229 /* This reloc does nothing. */
230 HOWTO (R_PPC64_NONE, /* type */
232 2, /* size (0 = byte, 1 = short, 2 = long) */
234 FALSE, /* pc_relative */
236 complain_overflow_dont, /* complain_on_overflow */
237 bfd_elf_generic_reloc, /* special_function */
238 "R_PPC64_NONE", /* name */
239 FALSE, /* partial_inplace */
242 FALSE), /* pcrel_offset */
244 /* A standard 32 bit relocation. */
245 HOWTO (R_PPC64_ADDR32, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_bitfield, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_PPC64_ADDR32", /* name */
254 FALSE, /* partial_inplace */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
259 /* An absolute 26 bit branch; the lower two bits must be zero.
260 FIXME: we don't check that, we just clear them. */
261 HOWTO (R_PPC64_ADDR24, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR24", /* name */
270 FALSE, /* partial_inplace */
272 0x03fffffc, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* A standard 16 bit relocation. */
276 HOWTO (R_PPC64_ADDR16, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_PPC64_ADDR16", /* name */
285 FALSE, /* partial_inplace */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* A 16 bit relocation without overflow. */
291 HOWTO (R_PPC64_ADDR16_LO, /* type */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE, /* pc_relative */
297 complain_overflow_dont,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_PPC64_ADDR16_LO", /* name */
300 FALSE, /* partial_inplace */
302 0xffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
305 /* Bits 16-31 of an address. */
306 HOWTO (R_PPC64_ADDR16_HI, /* type */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC64_ADDR16_HI", /* name */
315 FALSE, /* partial_inplace */
317 0xffff, /* dst_mask */
318 FALSE), /* pcrel_offset */
320 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
321 bits, treated as a signed number, is negative. */
322 HOWTO (R_PPC64_ADDR16_HA, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_dont, /* complain_on_overflow */
329 ppc64_elf_ha_reloc, /* special_function */
330 "R_PPC64_ADDR16_HA", /* name */
331 FALSE, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* An absolute 16 bit branch; the lower two bits must be zero.
337 FIXME: we don't check that, we just clear them. */
338 HOWTO (R_PPC64_ADDR14, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 ppc64_elf_branch_reloc, /* special_function */
346 "R_PPC64_ADDR14", /* name */
347 FALSE, /* partial_inplace */
349 0x0000fffc, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* An absolute 16 bit branch, for which bit 10 should be set to
353 indicate that the branch is expected to be taken. The lower two
354 bits must be zero. */
355 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 ppc64_elf_brtaken_reloc, /* special_function */
363 "R_PPC64_ADDR14_BRTAKEN",/* name */
364 FALSE, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is not expected to be taken. The lower
371 two bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE, /* pc_relative */
378 complain_overflow_bitfield, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc, /* special_function */
380 "R_PPC64_ADDR14_BRNTAKEN",/* name */
381 FALSE, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE), /* pcrel_offset */
386 /* A relative 26 bit branch; the lower two bits must be zero. */
387 HOWTO (R_PPC64_REL24, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 ppc64_elf_branch_reloc, /* special_function */
395 "R_PPC64_REL24", /* name */
396 FALSE, /* partial_inplace */
398 0x03fffffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
401 /* A relative 16 bit branch; the lower two bits must be zero. */
402 HOWTO (R_PPC64_REL14, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 TRUE, /* pc_relative */
408 complain_overflow_signed, /* complain_on_overflow */
409 ppc64_elf_branch_reloc, /* special_function */
410 "R_PPC64_REL14", /* name */
411 FALSE, /* partial_inplace */
413 0x0000fffc, /* dst_mask */
414 TRUE), /* pcrel_offset */
416 /* A relative 16 bit branch. Bit 10 should be set to indicate that
417 the branch is expected to be taken. The lower two bits must be
419 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 ppc64_elf_brtaken_reloc, /* special_function */
427 "R_PPC64_REL14_BRTAKEN", /* name */
428 FALSE, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is not expected to be taken. The lower two bits must
436 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_signed, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc, /* special_function */
444 "R_PPC64_REL14_BRNTAKEN",/* name */
445 FALSE, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
452 HOWTO (R_PPC64_GOT16, /* type */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE, /* pc_relative */
458 complain_overflow_signed, /* complain_on_overflow */
459 ppc64_elf_unhandled_reloc, /* special_function */
460 "R_PPC64_GOT16", /* name */
461 FALSE, /* partial_inplace */
463 0xffff, /* dst_mask */
464 FALSE), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
468 HOWTO (R_PPC64_GOT16_LO, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc, /* special_function */
476 "R_PPC64_GOT16_LO", /* name */
477 FALSE, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_HI, /* type */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_dont,/* complain_on_overflow */
491 ppc64_elf_unhandled_reloc, /* special_function */
492 "R_PPC64_GOT16_HI", /* name */
493 FALSE, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HA, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_dont,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc, /* special_function */
508 "R_PPC64_GOT16_HA", /* name */
509 FALSE, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* This is used only by the dynamic linker. The symbol should exist
515 both in the object being run and in some shared library. The
516 dynamic linker copies the data addressed by the symbol from the
517 shared library into the object, because the object being
518 run has to have the data at some particular address. */
519 HOWTO (R_PPC64_COPY, /* type */
521 0, /* this one is variable size */
523 FALSE, /* pc_relative */
525 complain_overflow_dont, /* complain_on_overflow */
526 ppc64_elf_unhandled_reloc, /* special_function */
527 "R_PPC64_COPY", /* name */
528 FALSE, /* partial_inplace */
531 FALSE), /* pcrel_offset */
533 /* Like R_PPC64_ADDR64, but used when setting global offset table
535 HOWTO (R_PPC64_GLOB_DAT, /* type */
537 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
539 FALSE, /* pc_relative */
541 complain_overflow_dont, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc, /* special_function */
543 "R_PPC64_GLOB_DAT", /* name */
544 FALSE, /* partial_inplace */
546 ONES (64), /* dst_mask */
547 FALSE), /* pcrel_offset */
549 /* Created by the link editor. Marks a procedure linkage table
550 entry for a symbol. */
551 HOWTO (R_PPC64_JMP_SLOT, /* type */
553 0, /* size (0 = byte, 1 = short, 2 = long) */
555 FALSE, /* pc_relative */
557 complain_overflow_dont, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc, /* special_function */
559 "R_PPC64_JMP_SLOT", /* name */
560 FALSE, /* partial_inplace */
563 FALSE), /* pcrel_offset */
565 /* Used only by the dynamic linker. When the object is run, this
566 doubleword64 is set to the load address of the object, plus the
568 HOWTO (R_PPC64_RELATIVE, /* type */
570 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_RELATIVE", /* name */
577 FALSE, /* partial_inplace */
579 ONES (64), /* dst_mask */
580 FALSE), /* pcrel_offset */
582 /* Like R_PPC64_ADDR32, but may be unaligned. */
583 HOWTO (R_PPC64_UADDR32, /* type */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
587 FALSE, /* pc_relative */
589 complain_overflow_bitfield, /* complain_on_overflow */
590 bfd_elf_generic_reloc, /* special_function */
591 "R_PPC64_UADDR32", /* name */
592 FALSE, /* partial_inplace */
594 0xffffffff, /* dst_mask */
595 FALSE), /* pcrel_offset */
597 /* Like R_PPC64_ADDR16, but may be unaligned. */
598 HOWTO (R_PPC64_UADDR16, /* type */
600 1, /* size (0 = byte, 1 = short, 2 = long) */
602 FALSE, /* pc_relative */
604 complain_overflow_bitfield, /* complain_on_overflow */
605 bfd_elf_generic_reloc, /* special_function */
606 "R_PPC64_UADDR16", /* name */
607 FALSE, /* partial_inplace */
609 0xffff, /* dst_mask */
610 FALSE), /* pcrel_offset */
612 /* 32-bit PC relative. */
613 HOWTO (R_PPC64_REL32, /* type */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
617 TRUE, /* pc_relative */
619 /* FIXME: Verify. Was complain_overflow_bitfield. */
620 complain_overflow_signed, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_REL32", /* name */
623 FALSE, /* partial_inplace */
625 0xffffffff, /* dst_mask */
626 TRUE), /* pcrel_offset */
628 /* 32-bit relocation to the symbol's procedure linkage table. */
629 HOWTO (R_PPC64_PLT32, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE, /* pc_relative */
635 complain_overflow_bitfield, /* complain_on_overflow */
636 ppc64_elf_unhandled_reloc, /* special_function */
637 "R_PPC64_PLT32", /* name */
638 FALSE, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
643 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
644 FIXME: R_PPC64_PLTREL32 not supported. */
645 HOWTO (R_PPC64_PLTREL32, /* type */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
649 TRUE, /* pc_relative */
651 complain_overflow_signed, /* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_PPC64_PLTREL32", /* name */
654 FALSE, /* partial_inplace */
656 0xffffffff, /* dst_mask */
657 TRUE), /* pcrel_offset */
659 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
661 HOWTO (R_PPC64_PLT16_LO, /* type */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE, /* pc_relative */
667 complain_overflow_dont, /* complain_on_overflow */
668 ppc64_elf_unhandled_reloc, /* special_function */
669 "R_PPC64_PLT16_LO", /* name */
670 FALSE, /* partial_inplace */
672 0xffff, /* dst_mask */
673 FALSE), /* pcrel_offset */
675 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
677 HOWTO (R_PPC64_PLT16_HI, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE, /* pc_relative */
683 complain_overflow_dont, /* complain_on_overflow */
684 ppc64_elf_unhandled_reloc, /* special_function */
685 "R_PPC64_PLT16_HI", /* name */
686 FALSE, /* partial_inplace */
688 0xffff, /* dst_mask */
689 FALSE), /* pcrel_offset */
691 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
693 HOWTO (R_PPC64_PLT16_HA, /* type */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
697 FALSE, /* pc_relative */
699 complain_overflow_dont, /* complain_on_overflow */
700 ppc64_elf_unhandled_reloc, /* special_function */
701 "R_PPC64_PLT16_HA", /* name */
702 FALSE, /* partial_inplace */
704 0xffff, /* dst_mask */
705 FALSE), /* pcrel_offset */
707 /* 16-bit section relative relocation. */
708 HOWTO (R_PPC64_SECTOFF, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE, /* pc_relative */
714 complain_overflow_bitfield, /* complain_on_overflow */
715 ppc64_elf_sectoff_reloc, /* special_function */
716 "R_PPC64_SECTOFF", /* name */
717 FALSE, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE), /* pcrel_offset */
722 /* Like R_PPC64_SECTOFF, but no overflow warning. */
723 HOWTO (R_PPC64_SECTOFF_LO, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_dont, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc, /* special_function */
731 "R_PPC64_SECTOFF_LO", /* name */
732 FALSE, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC64_SECTOFF_HI, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE, /* pc_relative */
744 complain_overflow_dont, /* complain_on_overflow */
745 ppc64_elf_sectoff_reloc, /* special_function */
746 "R_PPC64_SECTOFF_HI", /* name */
747 FALSE, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE), /* pcrel_offset */
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HA, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE, /* pc_relative */
759 complain_overflow_dont, /* complain_on_overflow */
760 ppc64_elf_sectoff_ha_reloc, /* special_function */
761 "R_PPC64_SECTOFF_HA", /* name */
762 FALSE, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE), /* pcrel_offset */
767 /* Like R_PPC64_REL24 without touching the two least significant bits. */
768 HOWTO (R_PPC64_REL30, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 TRUE, /* pc_relative */
774 complain_overflow_dont, /* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
776 "R_PPC64_REL30", /* name */
777 FALSE, /* partial_inplace */
779 0xfffffffc, /* dst_mask */
780 TRUE), /* pcrel_offset */
782 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
784 /* A standard 64-bit relocation. */
785 HOWTO (R_PPC64_ADDR64, /* type */
787 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 FALSE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC64_ADDR64", /* name */
794 FALSE, /* partial_inplace */
796 ONES (64), /* dst_mask */
797 FALSE), /* pcrel_offset */
799 /* The bits 32-47 of an address. */
800 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE, /* pc_relative */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_PPC64_ADDR16_HIGHER", /* name */
809 FALSE, /* partial_inplace */
811 0xffff, /* dst_mask */
812 FALSE), /* pcrel_offset */
814 /* The bits 32-47 of an address, plus 1 if the contents of the low
815 16 bits, treated as a signed number, is negative. */
816 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 FALSE, /* pc_relative */
822 complain_overflow_dont, /* complain_on_overflow */
823 ppc64_elf_ha_reloc, /* special_function */
824 "R_PPC64_ADDR16_HIGHERA", /* name */
825 FALSE, /* partial_inplace */
827 0xffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
830 /* The bits 48-63 of an address. */
831 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC64_ADDR16_HIGHEST", /* name */
840 FALSE, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* The bits 48-63 of an address, plus 1 if the contents of the low
846 16 bits, treated as a signed number, is negative. */
847 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE, /* pc_relative */
853 complain_overflow_dont, /* complain_on_overflow */
854 ppc64_elf_ha_reloc, /* special_function */
855 "R_PPC64_ADDR16_HIGHESTA", /* name */
856 FALSE, /* partial_inplace */
858 0xffff, /* dst_mask */
859 FALSE), /* pcrel_offset */
861 /* Like ADDR64, but may be unaligned. */
862 HOWTO (R_PPC64_UADDR64, /* type */
864 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
866 FALSE, /* pc_relative */
868 complain_overflow_dont, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
870 "R_PPC64_UADDR64", /* name */
871 FALSE, /* partial_inplace */
873 ONES (64), /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* 64-bit relative relocation. */
877 HOWTO (R_PPC64_REL64, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 TRUE, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_REL64", /* name */
886 FALSE, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 TRUE), /* pcrel_offset */
891 /* 64-bit relocation to the symbol's procedure linkage table. */
892 HOWTO (R_PPC64_PLT64, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 FALSE, /* pc_relative */
898 complain_overflow_dont, /* complain_on_overflow */
899 ppc64_elf_unhandled_reloc, /* special_function */
900 "R_PPC64_PLT64", /* name */
901 FALSE, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 FALSE), /* pcrel_offset */
906 /* 64-bit PC relative relocation to the symbol's procedure linkage
908 /* FIXME: R_PPC64_PLTREL64 not supported. */
909 HOWTO (R_PPC64_PLTREL64, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 TRUE, /* pc_relative */
915 complain_overflow_dont, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc, /* special_function */
917 "R_PPC64_PLTREL64", /* name */
918 FALSE, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 TRUE), /* pcrel_offset */
923 /* 16 bit TOC-relative relocation. */
925 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
926 HOWTO (R_PPC64_TOC16, /* type */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc64_elf_toc_reloc, /* special_function */
934 "R_PPC64_TOC16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation without overflow. */
942 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
943 HOWTO (R_PPC64_TOC16_LO, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_dont, /* complain_on_overflow */
950 ppc64_elf_toc_reloc, /* special_function */
951 "R_PPC64_TOC16_LO", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation, high 16 bits. */
959 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_HI, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE, /* pc_relative */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_toc_reloc, /* special_function */
968 "R_PPC64_TOC16_HI", /* name */
969 FALSE, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
975 contents of the low 16 bits, treated as a signed number, is
978 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
979 HOWTO (R_PPC64_TOC16_HA, /* type */
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_dont, /* complain_on_overflow */
986 ppc64_elf_toc_ha_reloc, /* special_function */
987 "R_PPC64_TOC16_HA", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* 64-bit relocation; insert value of TOC base (.TOC.). */
995 /* R_PPC64_TOC 51 doubleword64 .TOC. */
996 HOWTO (R_PPC64_TOC, /* type */
998 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_bitfield, /* complain_on_overflow */
1003 ppc64_elf_toc64_reloc, /* special_function */
1004 "R_PPC64_TOC", /* name */
1005 FALSE, /* partial_inplace */
1007 ONES (64), /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like R_PPC64_GOT16, but also informs the link editor that the
1011 value to relocate may (!) refer to a PLT entry which the link
1012 editor (a) may replace with the symbol value. If the link editor
1013 is unable to fully resolve the symbol, it may (b) create a PLT
1014 entry and store the address to the new PLT entry in the GOT.
1015 This permits lazy resolution of function symbols at run time.
1016 The link editor may also skip all of this and just (c) emit a
1017 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1018 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1019 HOWTO (R_PPC64_PLTGOT16, /* type */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE, /* pc_relative */
1025 complain_overflow_signed, /* complain_on_overflow */
1026 ppc64_elf_unhandled_reloc, /* special_function */
1027 "R_PPC64_PLTGOT16", /* name */
1028 FALSE, /* partial_inplace */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1033 /* Like R_PPC64_PLTGOT16, but without overflow. */
1034 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1035 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc64_elf_unhandled_reloc, /* special_function */
1043 "R_PPC64_PLTGOT16_LO", /* name */
1044 FALSE, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1050 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 FALSE, /* pc_relative */
1057 complain_overflow_dont, /* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HI", /* name */
1060 FALSE, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1065 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1066 1 if the contents of the low 16 bits, treated as a signed number,
1068 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE, /* pc_relative */
1075 complain_overflow_dont,/* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_HA", /* name */
1078 FALSE, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1083 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1084 HOWTO (R_PPC64_ADDR16_DS, /* type */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE, /* pc_relative */
1090 complain_overflow_bitfield, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
1092 "R_PPC64_ADDR16_DS", /* name */
1093 FALSE, /* partial_inplace */
1095 0xfffc, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE, /* pc_relative */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_PPC64_ADDR16_LO_DS",/* name */
1108 FALSE, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1113 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_GOT16_DS, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE, /* pc_relative */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc, /* special_function */
1122 "R_PPC64_GOT16_DS", /* name */
1123 FALSE, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE, /* pc_relative */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_GOT16_LO_DS", /* name */
1138 FALSE, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1143 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE, /* pc_relative */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc, /* special_function */
1152 "R_PPC64_PLT16_LO_DS", /* name */
1153 FALSE, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1158 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE, /* pc_relative */
1165 complain_overflow_bitfield, /* complain_on_overflow */
1166 ppc64_elf_sectoff_reloc, /* special_function */
1167 "R_PPC64_SECTOFF_DS", /* name */
1168 FALSE, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE, /* pc_relative */
1180 complain_overflow_dont, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc, /* special_function */
1182 "R_PPC64_SECTOFF_LO_DS",/* name */
1183 FALSE, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1188 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_TOC16_DS, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE, /* pc_relative */
1195 complain_overflow_signed, /* complain_on_overflow */
1196 ppc64_elf_toc_reloc, /* special_function */
1197 "R_PPC64_TOC16_DS", /* name */
1198 FALSE, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE, /* pc_relative */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc, /* special_function */
1212 "R_PPC64_TOC16_LO_DS", /* name */
1213 FALSE, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1218 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1219 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1220 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_signed, /* complain_on_overflow */
1227 ppc64_elf_unhandled_reloc, /* special_function */
1228 "R_PPC64_PLTGOT16_DS", /* name */
1229 FALSE, /* partial_inplace */
1231 0xfffc, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1235 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1236 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE, /* pc_relative */
1242 complain_overflow_dont, /* complain_on_overflow */
1243 ppc64_elf_unhandled_reloc, /* special_function */
1244 "R_PPC64_PLTGOT16_LO_DS",/* name */
1245 FALSE, /* partial_inplace */
1247 0xfffc, /* dst_mask */
1248 FALSE), /* pcrel_offset */
1250 /* Marker relocs for TLS. */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE, /* pc_relative */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_PPC64_TLS", /* name */
1260 FALSE, /* partial_inplace */
1263 FALSE), /* pcrel_offset */
1265 HOWTO (R_PPC64_TLSGD,
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont, /* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC64_TLSGD", /* name */
1274 FALSE, /* partial_inplace */
1277 FALSE), /* pcrel_offset */
1279 HOWTO (R_PPC64_TLSLD,
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLSLD", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TOCSAVE,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TOCSAVE", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 /* Computes the load module index of the load module that contains the
1308 definition of its TLS sym. */
1309 HOWTO (R_PPC64_DTPMOD64,
1311 4, /* size (0 = byte, 1 = short, 2 = long) */
1313 FALSE, /* pc_relative */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc, /* special_function */
1317 "R_PPC64_DTPMOD64", /* name */
1318 FALSE, /* partial_inplace */
1320 ONES (64), /* dst_mask */
1321 FALSE), /* pcrel_offset */
1323 /* Computes a dtv-relative displacement, the difference between the value
1324 of sym+add and the base address of the thread-local storage block that
1325 contains the definition of sym, minus 0x8000. */
1326 HOWTO (R_PPC64_DTPREL64,
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL64", /* name */
1335 FALSE, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 /* A 16 bit dtprel reloc. */
1341 HOWTO (R_PPC64_DTPREL16,
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_signed, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16", /* name */
1350 FALSE, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1355 /* Like DTPREL16, but no overflow. */
1356 HOWTO (R_PPC64_DTPREL16_LO,
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_LO", /* name */
1365 FALSE, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1370 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HI,
1372 16, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE, /* pc_relative */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HI", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HA,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HA", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HIGHER,
1402 32, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_dont, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HIGHER", /* name */
1410 FALSE, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1417 32, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE, /* pc_relative */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_HIGHERA", /* name */
1425 FALSE, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1432 48, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHEST", /* name */
1440 FALSE, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1460 /* Like DTPREL16, but for insns with a DS field. */
1461 HOWTO (R_PPC64_DTPREL16_DS,
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_DS", /* name */
1470 FALSE, /* partial_inplace */
1472 0xfffc, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1475 /* Like DTPREL16_DS, but no overflow. */
1476 HOWTO (R_PPC64_DTPREL16_LO_DS,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_LO_DS", /* name */
1485 FALSE, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1490 /* Computes a tp-relative displacement, the difference between the value of
1491 sym+add and the value of the thread pointer (r13). */
1492 HOWTO (R_PPC64_TPREL64,
1494 4, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL64", /* name */
1501 FALSE, /* partial_inplace */
1503 ONES (64), /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* A 16 bit tprel reloc. */
1507 HOWTO (R_PPC64_TPREL16,
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_signed, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16", /* name */
1516 FALSE, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Like TPREL16, but no overflow. */
1522 HOWTO (R_PPC64_TPREL16_LO,
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_LO", /* name */
1531 FALSE, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* Like TPREL16_LO, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HI,
1538 16, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE, /* pc_relative */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HI", /* name */
1546 FALSE, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1551 /* Like TPREL16_HI, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HA,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE, /* pc_relative */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HA", /* name */
1561 FALSE, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1566 /* Like TPREL16_HI, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HIGHER,
1568 32, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE, /* pc_relative */
1573 complain_overflow_dont, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HIGHER", /* name */
1576 FALSE, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1581 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHERA,
1583 32, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE, /* pc_relative */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_HIGHERA", /* name */
1591 FALSE, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHEST,
1598 48, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE, /* pc_relative */
1603 complain_overflow_dont, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_TPREL16_HIGHEST", /* name */
1606 FALSE, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1611 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE, /* pc_relative */
1618 complain_overflow_dont, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc, /* special_function */
1620 "R_PPC64_TPREL16_HIGHESTA", /* name */
1621 FALSE, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1626 /* Like TPREL16, but for insns with a DS field. */
1627 HOWTO (R_PPC64_TPREL16_DS,
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE, /* pc_relative */
1633 complain_overflow_signed, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_DS", /* name */
1636 FALSE, /* partial_inplace */
1638 0xfffc, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1641 /* Like TPREL16_DS, but no overflow. */
1642 HOWTO (R_PPC64_TPREL16_LO_DS,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE, /* pc_relative */
1648 complain_overflow_dont, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_LO_DS", /* name */
1651 FALSE, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1658 to the first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSGD16,
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_signed, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_GOT_TLSGD16", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* Like GOT_TLSGD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_GOT_TLSGD16_LO", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1690 16, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE, /* pc_relative */
1695 complain_overflow_dont, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc, /* special_function */
1697 "R_PPC64_GOT_TLSGD16_HI", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HA", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1718 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1719 with values (sym+add)@dtpmod and zero, and computes the offset to the
1720 first entry relative to the TOC base (r2). */
1721 HOWTO (R_PPC64_GOT_TLSLD16,
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE, /* pc_relative */
1727 complain_overflow_signed, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc, /* special_function */
1729 "R_PPC64_GOT_TLSLD16", /* name */
1730 FALSE, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE), /* pcrel_offset */
1735 /* Like GOT_TLSLD16, but no overflow. */
1736 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE, /* pc_relative */
1742 complain_overflow_dont, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSLD16_LO", /* name */
1745 FALSE, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1750 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1752 16, /* rightshift */
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE, /* pc_relative */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc, /* special_function */
1759 "R_PPC64_GOT_TLSLD16_HI", /* name */
1760 FALSE, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE, /* pc_relative */
1772 complain_overflow_dont, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HA", /* name */
1775 FALSE, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1781 the offset to the entry relative to the TOC base (r2). */
1782 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 FALSE, /* pc_relative */
1788 complain_overflow_signed, /* complain_on_overflow */
1789 ppc64_elf_unhandled_reloc, /* special_function */
1790 "R_PPC64_GOT_DTPREL16_DS", /* name */
1791 FALSE, /* partial_inplace */
1793 0xfffc, /* dst_mask */
1794 FALSE), /* pcrel_offset */
1796 /* Like GOT_DTPREL16_DS, but no overflow. */
1797 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE, /* pc_relative */
1803 complain_overflow_dont, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1806 FALSE, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1813 16, /* rightshift */
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE, /* pc_relative */
1818 complain_overflow_dont, /* complain_on_overflow */
1819 ppc64_elf_unhandled_reloc, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_HI", /* name */
1821 FALSE, /* partial_inplace */
1823 0xffff, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE, /* pc_relative */
1833 complain_overflow_dont, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HA", /* name */
1836 FALSE, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE), /* pcrel_offset */
1841 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1842 offset to the entry relative to the TOC base (r2). */
1843 HOWTO (R_PPC64_GOT_TPREL16_DS,
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_signed, /* complain_on_overflow */
1850 ppc64_elf_unhandled_reloc, /* special_function */
1851 "R_PPC64_GOT_TPREL16_DS", /* name */
1852 FALSE, /* partial_inplace */
1854 0xfffc, /* dst_mask */
1855 FALSE), /* pcrel_offset */
1857 /* Like GOT_TPREL16_DS, but no overflow. */
1858 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE, /* pc_relative */
1864 complain_overflow_dont, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc, /* special_function */
1866 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1867 FALSE, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE), /* pcrel_offset */
1872 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1873 HOWTO (R_PPC64_GOT_TPREL16_HI,
1874 16, /* rightshift */
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1877 FALSE, /* pc_relative */
1879 complain_overflow_dont, /* complain_on_overflow */
1880 ppc64_elf_unhandled_reloc, /* special_function */
1881 "R_PPC64_GOT_TPREL16_HI", /* name */
1882 FALSE, /* partial_inplace */
1884 0xffff, /* dst_mask */
1885 FALSE), /* pcrel_offset */
1887 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HA,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE, /* pc_relative */
1894 complain_overflow_dont, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HA", /* name */
1897 FALSE, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE), /* pcrel_offset */
1902 HOWTO (R_PPC64_JMP_IREL, /* type */
1904 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1906 FALSE, /* pc_relative */
1908 complain_overflow_dont, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc, /* special_function */
1910 "R_PPC64_JMP_IREL", /* name */
1911 FALSE, /* partial_inplace */
1914 FALSE), /* pcrel_offset */
1916 HOWTO (R_PPC64_IRELATIVE, /* type */
1918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_dont, /* complain_on_overflow */
1923 bfd_elf_generic_reloc, /* special_function */
1924 "R_PPC64_IRELATIVE", /* name */
1925 FALSE, /* partial_inplace */
1927 ONES (64), /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* A 16 bit relative relocation. */
1931 HOWTO (R_PPC64_REL16, /* type */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 TRUE, /* pc_relative */
1937 complain_overflow_bitfield, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 "R_PPC64_REL16", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 TRUE), /* pcrel_offset */
1945 /* A 16 bit relative relocation without overflow. */
1946 HOWTO (R_PPC64_REL16_LO, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE, /* pc_relative */
1952 complain_overflow_dont,/* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_REL16_LO", /* name */
1955 FALSE, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE), /* pcrel_offset */
1960 /* The high order 16 bits of a relative address. */
1961 HOWTO (R_PPC64_REL16_HI, /* type */
1962 16, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1965 TRUE, /* pc_relative */
1967 complain_overflow_dont, /* complain_on_overflow */
1968 bfd_elf_generic_reloc, /* special_function */
1969 "R_PPC64_REL16_HI", /* name */
1970 FALSE, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address, plus 1 if the contents of
1976 the low 16 bits, treated as a signed number, is negative. */
1977 HOWTO (R_PPC64_REL16_HA, /* type */
1978 16, /* rightshift */
1979 1, /* size (0 = byte, 1 = short, 2 = long) */
1981 TRUE, /* pc_relative */
1983 complain_overflow_dont, /* complain_on_overflow */
1984 ppc64_elf_ha_reloc, /* special_function */
1985 "R_PPC64_REL16_HA", /* name */
1986 FALSE, /* partial_inplace */
1988 0xffff, /* dst_mask */
1989 TRUE), /* pcrel_offset */
1991 /* GNU extension to record C++ vtable hierarchy. */
1992 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1994 0, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE, /* pc_relative */
1998 complain_overflow_dont, /* complain_on_overflow */
1999 NULL, /* special_function */
2000 "R_PPC64_GNU_VTINHERIT", /* name */
2001 FALSE, /* partial_inplace */
2004 FALSE), /* pcrel_offset */
2006 /* GNU extension to record C++ vtable member usage. */
2007 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2009 0, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 NULL, /* special_function */
2015 "R_PPC64_GNU_VTENTRY", /* name */
2016 FALSE, /* partial_inplace */
2019 FALSE), /* pcrel_offset */
2023 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2027 ppc_howto_init (void)
2029 unsigned int i, type;
2032 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2035 type = ppc64_elf_howto_raw[i].type;
2036 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2037 / sizeof (ppc64_elf_howto_table[0])));
2038 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2042 static reloc_howto_type *
2043 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2044 bfd_reloc_code_real_type code)
2046 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2048 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2049 /* Initialize howto table if needed. */
2057 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2059 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2061 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2063 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2065 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2067 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2069 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2071 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2073 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2075 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2077 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2079 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2081 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2083 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2085 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2087 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2089 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2091 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2093 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2095 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2097 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2099 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2101 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2103 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2105 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2107 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2109 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2111 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2113 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2115 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2117 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2119 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2121 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2123 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2125 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2127 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2129 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2131 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2133 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2135 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2137 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2139 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2141 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2143 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2145 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2147 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2149 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2151 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2153 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2155 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2157 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2159 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2161 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2163 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2165 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2167 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2169 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2171 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2173 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2175 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2177 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2179 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2181 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2183 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2185 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2187 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2189 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2191 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2193 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2195 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2197 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2199 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2201 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2203 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2205 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2207 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2209 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2211 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2213 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2215 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2217 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2219 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2221 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2223 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2225 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2227 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2229 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2231 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2233 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2235 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2237 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2239 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2241 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2243 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2245 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2247 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2249 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2251 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2253 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2255 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2257 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2259 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2261 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2263 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2265 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2267 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2269 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2273 return ppc64_elf_howto_table[r];
2276 static reloc_howto_type *
2277 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2283 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2285 if (ppc64_elf_howto_raw[i].name != NULL
2286 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2287 return &ppc64_elf_howto_raw[i];
2292 /* Set the howto pointer for a PowerPC ELF reloc. */
2295 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2296 Elf_Internal_Rela *dst)
2300 /* Initialize howto table if needed. */
2301 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2304 type = ELF64_R_TYPE (dst->r_info);
2305 if (type >= (sizeof (ppc64_elf_howto_table)
2306 / sizeof (ppc64_elf_howto_table[0])))
2308 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2310 type = R_PPC64_NONE;
2312 cache_ptr->howto = ppc64_elf_howto_table[type];
2315 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2317 static bfd_reloc_status_type
2318 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2319 void *data, asection *input_section,
2320 bfd *output_bfd, char **error_message)
2322 /* If this is a relocatable link (output_bfd test tells us), just
2323 call the generic function. Any adjustment will be done at final
2325 if (output_bfd != NULL)
2326 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2327 input_section, output_bfd, error_message);
2329 /* Adjust the addend for sign extension of the low 16 bits.
2330 We won't actually be using the low 16 bits, so trashing them
2332 reloc_entry->addend += 0x8000;
2333 return bfd_reloc_continue;
2336 static bfd_reloc_status_type
2337 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2341 if (output_bfd != NULL)
2342 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2343 input_section, output_bfd, error_message);
2345 if (strcmp (symbol->section->name, ".opd") == 0
2346 && (symbol->section->owner->flags & DYNAMIC) == 0)
2348 bfd_vma dest = opd_entry_value (symbol->section,
2349 symbol->value + reloc_entry->addend,
2351 if (dest != (bfd_vma) -1)
2352 reloc_entry->addend = dest - (symbol->value
2353 + symbol->section->output_section->vma
2354 + symbol->section->output_offset);
2356 return bfd_reloc_continue;
2359 static bfd_reloc_status_type
2360 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2361 void *data, asection *input_section,
2362 bfd *output_bfd, char **error_message)
2365 enum elf_ppc64_reloc_type r_type;
2366 bfd_size_type octets;
2367 /* Assume 'at' branch hints. */
2368 bfd_boolean is_isa_v2 = TRUE;
2370 /* If this is a relocatable link (output_bfd test tells us), just
2371 call the generic function. Any adjustment will be done at final
2373 if (output_bfd != NULL)
2374 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2375 input_section, output_bfd, error_message);
2377 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2378 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2379 insn &= ~(0x01 << 21);
2380 r_type = reloc_entry->howto->type;
2381 if (r_type == R_PPC64_ADDR14_BRTAKEN
2382 || r_type == R_PPC64_REL14_BRTAKEN)
2383 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2387 /* Set 'a' bit. This is 0b00010 in BO field for branch
2388 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2389 for branch on CTR insns (BO == 1a00t or 1a01t). */
2390 if ((insn & (0x14 << 21)) == (0x04 << 21))
2392 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2402 if (!bfd_is_com_section (symbol->section))
2403 target = symbol->value;
2404 target += symbol->section->output_section->vma;
2405 target += symbol->section->output_offset;
2406 target += reloc_entry->addend;
2408 from = (reloc_entry->address
2409 + input_section->output_offset
2410 + input_section->output_section->vma);
2412 /* Invert 'y' bit if not the default. */
2413 if ((bfd_signed_vma) (target - from) < 0)
2416 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2418 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2419 input_section, output_bfd, error_message);
2422 static bfd_reloc_status_type
2423 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2424 void *data, asection *input_section,
2425 bfd *output_bfd, char **error_message)
2427 /* If this is a relocatable link (output_bfd test tells us), just
2428 call the generic function. Any adjustment will be done at final
2430 if (output_bfd != NULL)
2431 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2432 input_section, output_bfd, error_message);
2434 /* Subtract the symbol section base address. */
2435 reloc_entry->addend -= symbol->section->output_section->vma;
2436 return bfd_reloc_continue;
2439 static bfd_reloc_status_type
2440 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2441 void *data, asection *input_section,
2442 bfd *output_bfd, char **error_message)
2444 /* If this is a relocatable link (output_bfd test tells us), just
2445 call the generic function. Any adjustment will be done at final
2447 if (output_bfd != NULL)
2448 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2449 input_section, output_bfd, error_message);
2451 /* Subtract the symbol section base address. */
2452 reloc_entry->addend -= symbol->section->output_section->vma;
2454 /* Adjust the addend for sign extension of the low 16 bits. */
2455 reloc_entry->addend += 0x8000;
2456 return bfd_reloc_continue;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd != NULL)
2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2471 input_section, output_bfd, error_message);
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2475 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2479 return bfd_reloc_continue;
2482 static bfd_reloc_status_type
2483 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2484 void *data, asection *input_section,
2485 bfd *output_bfd, char **error_message)
2489 /* If this is a relocatable link (output_bfd test tells us), just
2490 call the generic function. Any adjustment will be done at final
2492 if (output_bfd != NULL)
2493 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2494 input_section, output_bfd, error_message);
2496 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2498 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2500 /* Subtract the TOC base address. */
2501 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2503 /* Adjust the addend for sign extension of the low 16 bits. */
2504 reloc_entry->addend += 0x8000;
2505 return bfd_reloc_continue;
2508 static bfd_reloc_status_type
2509 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2510 void *data, asection *input_section,
2511 bfd *output_bfd, char **error_message)
2514 bfd_size_type octets;
2516 /* If this is a relocatable link (output_bfd test tells us), just
2517 call the generic function. Any adjustment will be done at final
2519 if (output_bfd != NULL)
2520 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2521 input_section, output_bfd, error_message);
2523 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2525 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2527 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2528 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2529 return bfd_reloc_ok;
2532 static bfd_reloc_status_type
2533 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2534 void *data, asection *input_section,
2535 bfd *output_bfd, char **error_message)
2537 /* If this is a relocatable link (output_bfd test tells us), just
2538 call the generic function. Any adjustment will be done at final
2540 if (output_bfd != NULL)
2541 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2542 input_section, output_bfd, error_message);
2544 if (error_message != NULL)
2546 static char buf[60];
2547 sprintf (buf, "generic linker can't handle %s",
2548 reloc_entry->howto->name);
2549 *error_message = buf;
2551 return bfd_reloc_dangerous;
2554 /* Track GOT entries needed for a given symbol. We might need more
2555 than one got entry per symbol. */
2558 struct got_entry *next;
2560 /* The symbol addend that we'll be placing in the GOT. */
2563 /* Unlike other ELF targets, we use separate GOT entries for the same
2564 symbol referenced from different input files. This is to support
2565 automatic multiple TOC/GOT sections, where the TOC base can vary
2566 from one input file to another. After partitioning into TOC groups
2567 we merge entries within the group.
2569 Point to the BFD owning this GOT entry. */
2572 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2573 TLS_TPREL or TLS_DTPREL for tls entries. */
2574 unsigned char tls_type;
2576 /* Non-zero if got.ent points to real entry. */
2577 unsigned char is_indirect;
2579 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2582 bfd_signed_vma refcount;
2584 struct got_entry *ent;
2588 /* The same for PLT. */
2591 struct plt_entry *next;
2597 bfd_signed_vma refcount;
2602 struct ppc64_elf_obj_tdata
2604 struct elf_obj_tdata elf;
2606 /* Shortcuts to dynamic linker sections. */
2610 /* Used during garbage collection. We attach global symbols defined
2611 on removed .opd entries to this section so that the sym is removed. */
2612 asection *deleted_section;
2614 /* TLS local dynamic got entry handling. Support for multiple GOT
2615 sections means we potentially need one of these for each input bfd. */
2616 struct got_entry tlsld_got;
2618 /* A copy of relocs before they are modified for --emit-relocs. */
2619 Elf_Internal_Rela *opd_relocs;
2621 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2622 the reloc to be in the range -32768 to 32767. */
2623 unsigned int has_small_toc_reloc : 1;
2625 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2626 instruction not one we handle. */
2627 unsigned int unexpected_toc_insn : 1;
2630 #define ppc64_elf_tdata(bfd) \
2631 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2633 #define ppc64_tlsld_got(bfd) \
2634 (&ppc64_elf_tdata (bfd)->tlsld_got)
2636 #define is_ppc64_elf(bfd) \
2637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2638 && elf_object_id (bfd) == PPC64_ELF_DATA)
2640 /* Override the generic function because we store some extras. */
2643 ppc64_elf_mkobject (bfd *abfd)
2645 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2649 /* Fix bad default arch selected for a 64 bit input bfd when the
2650 default is 32 bit. */
2653 ppc64_elf_object_p (bfd *abfd)
2655 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2657 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2659 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2661 /* Relies on arch after 32 bit default being 64 bit default. */
2662 abfd->arch_info = abfd->arch_info->next;
2663 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2669 /* Support for core dump NOTE sections. */
2672 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2674 size_t offset, size;
2676 if (note->descsz != 504)
2680 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2683 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2689 /* Make a ".reg/999" section. */
2690 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2691 size, note->descpos + offset);
2695 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2697 if (note->descsz != 136)
2700 elf_tdata (abfd)->core->pid
2701 = bfd_get_32 (abfd, note->descdata + 24);
2702 elf_tdata (abfd)->core->program
2703 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2704 elf_tdata (abfd)->core->command
2705 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2711 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2724 va_start (ap, note_type);
2725 memset (data, 0, sizeof (data));
2726 strncpy (data + 40, va_arg (ap, const char *), 16);
2727 strncpy (data + 56, va_arg (ap, const char *), 80);
2729 return elfcore_write_note (abfd, buf, bufsiz,
2730 "CORE", note_type, data, sizeof (data));
2741 va_start (ap, note_type);
2742 memset (data, 0, 112);
2743 pid = va_arg (ap, long);
2744 bfd_put_32 (abfd, pid, data + 32);
2745 cursig = va_arg (ap, int);
2746 bfd_put_16 (abfd, cursig, data + 12);
2747 greg = va_arg (ap, const void *);
2748 memcpy (data + 112, greg, 384);
2749 memset (data + 496, 0, 8);
2751 return elfcore_write_note (abfd, buf, bufsiz,
2752 "CORE", note_type, data, sizeof (data));
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2767 { NULL, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type {
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection **func_sec;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2816 if (!sec->used_by_bfd)
2818 struct _ppc64_elf_section_data *sdata;
2819 bfd_size_type amt = sizeof (*sdata);
2821 sdata = bfd_zalloc (abfd, amt);
2824 sec->used_by_bfd = sdata;
2827 return _bfd_elf_new_section_hook (abfd, sec);
2830 static struct _opd_sec_data *
2831 get_opd_info (asection * sec)
2834 && ppc64_elf_section_data (sec) != NULL
2835 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2836 return &ppc64_elf_section_data (sec)->u.opd;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap, const void *bp)
2848 const asymbol *a = * (const asymbol **) ap;
2849 const asymbol *b = * (const asymbol **) bp;
2851 /* Section symbols first. */
2852 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2854 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2857 /* then .opd symbols. */
2858 if (strcmp (a->section->name, ".opd") == 0
2859 && strcmp (b->section->name, ".opd") != 0)
2861 if (strcmp (a->section->name, ".opd") != 0
2862 && strcmp (b->section->name, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 == (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2872 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 != (SEC_CODE | SEC_ALLOC)
2874 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 == (SEC_CODE | SEC_ALLOC))
2878 if (synthetic_relocatable)
2880 if (a->section->id < b->section->id)
2883 if (a->section->id > b->section->id)
2887 if (a->value + a->section->vma < b->value + b->section->vma)
2890 if (a->value + a->section->vma > b->value + b->section->vma)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2898 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2901 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2904 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2907 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2910 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2913 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2916 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2933 mid = (lo + hi) >> 1;
2934 if (syms[mid]->value + syms[mid]->section->vma < value)
2936 else if (syms[mid]->value + syms[mid]->section->vma > value)
2946 mid = (lo + hi) >> 1;
2947 if (syms[mid]->section->id < id)
2949 else if (syms[mid]->section->id > id)
2951 else if (syms[mid]->value < value)
2953 else if (syms[mid]->value > value)
2963 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2965 bfd_vma vma = *(bfd_vma *) ptr;
2966 return ((section->flags & SEC_ALLOC) != 0
2967 && section->vma <= vma
2968 && vma < section->vma + section->size);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2976 long static_count, asymbol **static_syms,
2977 long dyn_count, asymbol **dyn_syms,
2984 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2986 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2991 opd = bfd_get_section_by_name (abfd, ".opd");
2995 symcount = static_count;
2997 symcount += dyn_count;
3001 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3005 if (!relocatable && static_count != 0 && dyn_count != 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms, static_syms, static_count * sizeof (*syms));
3009 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3011 else if (!relocatable && static_count == 0)
3012 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3014 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3016 synthetic_relocatable = relocatable;
3017 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3019 if (!relocatable && symcount > 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i = 1, j = 1; i < symcount; ++i)
3026 if (syms[i - 1]->value + syms[i - 1]->section->vma
3027 != syms[i]->value + syms[i]->section->vma)
3028 syms[j++] = syms[i];
3033 if (strcmp (syms[i]->section->name, ".opd") == 0)
3037 for (; i < symcount; ++i)
3038 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3039 != (SEC_CODE | SEC_ALLOC))
3040 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3044 for (; i < symcount; ++i)
3045 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3049 for (; i < symcount; ++i)
3050 if (strcmp (syms[i]->section->name, ".opd") != 0)
3054 for (; i < symcount; ++i)
3055 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3056 != (SEC_CODE | SEC_ALLOC))
3064 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3069 if (opdsymend == secsymend)
3072 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3073 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3077 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3084 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3088 while (r < opd->relocation + relcount
3089 && r->address < syms[i]->value + opd->vma)
3092 if (r == opd->relocation + relcount)
3095 if (r->address != syms[i]->value + opd->vma)
3098 if (r->howto->type != R_PPC64_ADDR64)
3101 sym = *r->sym_ptr_ptr;
3102 if (!sym_exists_at (syms, opdsymend, symcount,
3103 sym->section->id, sym->value + r->addend))
3106 size += sizeof (asymbol);
3107 size += strlen (syms[i]->name) + 2;
3111 s = *ret = bfd_malloc (size);
3118 names = (char *) (s + count);
3120 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3124 while (r < opd->relocation + relcount
3125 && r->address < syms[i]->value + opd->vma)
3128 if (r == opd->relocation + relcount)
3131 if (r->address != syms[i]->value + opd->vma)
3134 if (r->howto->type != R_PPC64_ADDR64)
3137 sym = *r->sym_ptr_ptr;
3138 if (!sym_exists_at (syms, opdsymend, symcount,
3139 sym->section->id, sym->value + r->addend))
3144 s->flags |= BSF_SYNTHETIC;
3145 s->section = sym->section;
3146 s->value = sym->value + r->addend;
3149 len = strlen (syms[i]->name);
3150 memcpy (names, syms[i]->name, len + 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s->udata.p = syms[i];
3161 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3165 bfd_vma glink_vma = 0, resolv_vma = 0;
3166 asection *dynamic, *glink = NULL, *relplt = NULL;
3169 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3173 free_contents_and_exit:
3181 for (i = secsymend; i < opdsymend; ++i)
3185 /* Ignore bogus symbols. */
3186 if (syms[i]->value > opd->size - 8)
3189 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3190 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3193 size += sizeof (asymbol);
3194 size += strlen (syms[i]->name) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3202 bfd_byte *dynbuf, *extdyn, *extdynend;
3204 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3206 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3207 goto free_contents_and_exit;
3209 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3210 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3213 extdynend = extdyn + dynamic->size;
3214 for (; extdyn < extdynend; extdyn += extdynsize)
3216 Elf_Internal_Dyn dyn;
3217 (*swap_dyn_in) (abfd, extdyn, &dyn);
3219 if (dyn.d_tag == DT_NULL)
3222 if (dyn.d_tag == DT_PPC64_GLINK)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma = dyn.d_un.d_val + 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink = bfd_sections_find_if (abfd, section_covers_vma,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd, glink, buf,
3245 glink_vma + 4 - glink->vma, 4))
3247 unsigned int insn = bfd_get_32 (abfd, buf);
3249 if ((insn & ~0x3fffffc) == 0)
3250 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3254 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3256 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3259 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3260 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3261 goto free_contents_and_exit;
3263 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3264 size += plt_count * sizeof (asymbol);
3266 p = relplt->relocation;
3267 for (i = 0; i < plt_count; i++, p++)
3269 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3271 size += sizeof ("+0x") - 1 + 16;
3276 s = *ret = bfd_malloc (size);
3278 goto free_contents_and_exit;
3280 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3282 for (i = secsymend; i < opdsymend; ++i)
3286 if (syms[i]->value > opd->size - 8)
3289 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3290 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3294 asection *sec = abfd->sections;
3301 long mid = (lo + hi) >> 1;
3302 if (syms[mid]->section->vma < ent)
3304 else if (syms[mid]->section->vma > ent)
3308 sec = syms[mid]->section;
3313 if (lo >= hi && lo > codesecsym)
3314 sec = syms[lo - 1]->section;
3316 for (; sec != NULL; sec = sec->next)
3320 /* SEC_LOAD may not be set if SEC is from a separate debug
3322 if ((sec->flags & SEC_ALLOC) == 0)
3324 if ((sec->flags & SEC_CODE) != 0)
3327 s->flags |= BSF_SYNTHETIC;
3328 s->value = ent - s->section->vma;
3331 len = strlen (syms[i]->name);
3332 memcpy (names, syms[i]->name, len + 1);
3334 /* Have udata.p point back to the original symbol this
3335 synthetic symbol was derived from. */
3336 s->udata.p = syms[i];
3342 if (glink != NULL && relplt != NULL)
3346 /* Add a symbol for the main glink trampoline. */
3347 memset (s, 0, sizeof *s);
3349 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3351 s->value = resolv_vma - glink->vma;
3353 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3354 names += sizeof ("__glink_PLTresolve");
3359 /* FIXME: It would be very much nicer to put sym@plt on the
3360 stub rather than on the glink branch table entry. The
3361 objdump disassembler would then use a sensible symbol
3362 name on plt calls. The difficulty in doing so is
3363 a) finding the stubs, and,
3364 b) matching stubs against plt entries, and,
3365 c) there can be multiple stubs for a given plt entry.
3367 Solving (a) could be done by code scanning, but older
3368 ppc64 binaries used different stubs to current code.
3369 (b) is the tricky one since you need to known the toc
3370 pointer for at least one function that uses a pic stub to
3371 be able to calculate the plt address referenced.
3372 (c) means gdb would need to set multiple breakpoints (or
3373 find the glink branch itself) when setting breakpoints
3374 for pending shared library loads. */
3375 p = relplt->relocation;
3376 for (i = 0; i < plt_count; i++, p++)
3380 *s = **p->sym_ptr_ptr;
3381 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3382 we are defining a symbol, ensure one of them is set. */
3383 if ((s->flags & BSF_LOCAL) == 0)
3384 s->flags |= BSF_GLOBAL;
3385 s->flags |= BSF_SYNTHETIC;
3387 s->value = glink_vma - glink->vma;
3390 len = strlen ((*p->sym_ptr_ptr)->name);
3391 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3395 memcpy (names, "+0x", sizeof ("+0x") - 1);
3396 names += sizeof ("+0x") - 1;
3397 bfd_sprintf_vma (abfd, names, p->addend);
3398 names += strlen (names);
3400 memcpy (names, "@plt", sizeof ("@plt"));
3401 names += sizeof ("@plt");
3416 /* The following functions are specific to the ELF linker, while
3417 functions above are used generally. Those named ppc64_elf_* are
3418 called by the main ELF linker code. They appear in this file more
3419 or less in the order in which they are called. eg.
3420 ppc64_elf_check_relocs is called early in the link process,
3421 ppc64_elf_finish_dynamic_sections is one of the last functions
3424 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3425 functions have both a function code symbol and a function descriptor
3426 symbol. A call to foo in a relocatable object file looks like:
3433 The function definition in another object file might be:
3437 . .quad .TOC.@tocbase
3443 When the linker resolves the call during a static link, the branch
3444 unsurprisingly just goes to .foo and the .opd information is unused.
3445 If the function definition is in a shared library, things are a little
3446 different: The call goes via a plt call stub, the opd information gets
3447 copied to the plt, and the linker patches the nop.
3455 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3456 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3457 . std 2,40(1) # this is the general idea
3465 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3467 The "reloc ()" notation is supposed to indicate that the linker emits
3468 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3471 What are the difficulties here? Well, firstly, the relocations
3472 examined by the linker in check_relocs are against the function code
3473 sym .foo, while the dynamic relocation in the plt is emitted against
3474 the function descriptor symbol, foo. Somewhere along the line, we need
3475 to carefully copy dynamic link information from one symbol to the other.
3476 Secondly, the generic part of the elf linker will make .foo a dynamic
3477 symbol as is normal for most other backends. We need foo dynamic
3478 instead, at least for an application final link. However, when
3479 creating a shared library containing foo, we need to have both symbols
3480 dynamic so that references to .foo are satisfied during the early
3481 stages of linking. Otherwise the linker might decide to pull in a
3482 definition from some other object, eg. a static library.
3484 Update: As of August 2004, we support a new convention. Function
3485 calls may use the function descriptor symbol, ie. "bl foo". This
3486 behaves exactly as "bl .foo". */
3488 /* Of those relocs that might be copied as dynamic relocs, this function
3489 selects those that must be copied when linking a shared library,
3490 even when the symbol is local. */
3493 must_be_dyn_reloc (struct bfd_link_info *info,
3494 enum elf_ppc64_reloc_type r_type)
3506 case R_PPC64_TPREL16:
3507 case R_PPC64_TPREL16_LO:
3508 case R_PPC64_TPREL16_HI:
3509 case R_PPC64_TPREL16_HA:
3510 case R_PPC64_TPREL16_DS:
3511 case R_PPC64_TPREL16_LO_DS:
3512 case R_PPC64_TPREL16_HIGHER:
3513 case R_PPC64_TPREL16_HIGHERA:
3514 case R_PPC64_TPREL16_HIGHEST:
3515 case R_PPC64_TPREL16_HIGHESTA:
3516 case R_PPC64_TPREL64:
3517 return !info->executable;
3521 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3522 copying dynamic variables from a shared lib into an app's dynbss
3523 section, and instead use a dynamic relocation to point into the
3524 shared lib. With code that gcc generates, it's vital that this be
3525 enabled; In the PowerPC64 ABI, the address of a function is actually
3526 the address of a function descriptor, which resides in the .opd
3527 section. gcc uses the descriptor directly rather than going via the
3528 GOT as some other ABI's do, which means that initialized function
3529 pointers must reference the descriptor. Thus, a function pointer
3530 initialized to the address of a function in a shared library will
3531 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3532 redefines the function descriptor symbol to point to the copy. This
3533 presents a problem as a plt entry for that function is also
3534 initialized from the function descriptor symbol and the copy reloc
3535 may not be initialized first. */
3536 #define ELIMINATE_COPY_RELOCS 1
3538 /* Section name for stubs is the associated section name plus this
3540 #define STUB_SUFFIX ".stub"
3543 ppc_stub_long_branch:
3544 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3545 destination, but a 24 bit branch in a stub section will reach.
3548 ppc_stub_plt_branch:
3549 Similar to the above, but a 24 bit branch in the stub section won't
3550 reach its destination.
3551 . addis %r12,%r2,xxx@toc@ha
3552 . ld %r11,xxx@toc@l(%r12)
3557 Used to call a function in a shared library. If it so happens that
3558 the plt entry referenced crosses a 64k boundary, then an extra
3559 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3560 . addis %r12,%r2,xxx@toc@ha
3562 . ld %r11,xxx+0@toc@l(%r12)
3564 . ld %r2,xxx+8@toc@l(%r12)
3565 . ld %r11,xxx+16@toc@l(%r12)
3568 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3569 code to adjust the value and save r2 to support multiple toc sections.
3570 A ppc_stub_long_branch with an r2 offset looks like:
3572 . addis %r2,%r2,off@ha
3573 . addi %r2,%r2,off@l
3576 A ppc_stub_plt_branch with an r2 offset looks like:
3578 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx@toc@l(%r12)
3580 . addis %r2,%r2,off@ha
3581 . addi %r2,%r2,off@l
3585 In cases where the "addis" instruction would add zero, the "addis" is
3586 omitted and following instructions modified slightly in some cases.
3589 enum ppc_stub_type {
3591 ppc_stub_long_branch,
3592 ppc_stub_long_branch_r2off,
3593 ppc_stub_plt_branch,
3594 ppc_stub_plt_branch_r2off,
3596 ppc_stub_plt_call_r2save
3599 struct ppc_stub_hash_entry {
3601 /* Base hash table entry structure. */
3602 struct bfd_hash_entry root;
3604 enum ppc_stub_type stub_type;
3606 /* The stub section. */
3609 /* Offset within stub_sec of the beginning of this stub. */
3610 bfd_vma stub_offset;
3612 /* Given the symbol's value and its section we can determine its final
3613 value when building the stubs (so the stub knows where to jump. */
3614 bfd_vma target_value;
3615 asection *target_section;
3617 /* The symbol table entry, if any, that this was derived from. */
3618 struct ppc_link_hash_entry *h;
3619 struct plt_entry *plt_ent;
3621 /* Where this stub is being called from, or, in the case of combined
3622 stub sections, the first input section in the group. */
3626 struct ppc_branch_hash_entry {
3628 /* Base hash table entry structure. */
3629 struct bfd_hash_entry root;
3631 /* Offset within branch lookup table. */
3632 unsigned int offset;
3634 /* Generation marker. */
3638 /* Used to track dynamic relocations for local symbols. */
3639 struct ppc_dyn_relocs
3641 struct ppc_dyn_relocs *next;
3643 /* The input section of the reloc. */
3646 /* Total number of relocs copied for the input section. */
3647 unsigned int count : 31;
3649 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3650 unsigned int ifunc : 1;
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 elf_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. */
3701 unsigned char tls_mask;
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 /* Hash table for function prologue tocsave. */
3717 htab_t tocsave_htab;
3719 /* Linker stub bfd. */
3722 /* Linker call-backs. */
3723 asection * (*add_stub_section) (const char *, asection *);
3724 void (*layout_sections_again) (void);
3726 /* Array to keep track of which stub sections have been created, and
3727 information on stub grouping. */
3729 /* This is the section to which stubs in the group will be attached. */
3731 /* The stub section. */
3733 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3737 /* Temp used when calculating TOC pointers. */
3740 asection *toc_first_sec;
3742 /* Highest input section id. */
3745 /* Highest output section index. */
3748 /* Used when adding symbols. */
3749 struct ppc_link_hash_entry *dot_syms;
3751 /* List of input sections for each output section. */
3752 asection **input_list;
3754 /* Short-cuts to get to dynamic linker sections. */
3766 asection *glink_eh_frame;
3768 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3769 struct ppc_link_hash_entry *tls_get_addr;
3770 struct ppc_link_hash_entry *tls_get_addr_fd;
3772 /* The size of reliplt used by got entry relocs. */
3773 bfd_size_type got_reli_size;
3776 unsigned long stub_count[ppc_stub_plt_call_r2save];
3778 /* Number of stubs against global syms. */
3779 unsigned long stub_globals;
3781 /* Alignment of PLT call stubs. */
3782 unsigned int plt_stub_align:4;
3784 /* Set if PLT call stubs should load r11. */
3785 unsigned int plt_static_chain:1;
3787 /* Set if PLT call stubs need a read-read barrier. */
3788 unsigned int plt_thread_safe:1;
3790 /* Set if we should emit symbols for stubs. */
3791 unsigned int emit_stub_syms:1;
3793 /* Set if __tls_get_addr optimization should not be done. */
3794 unsigned int no_tls_get_addr_opt:1;
3796 /* Support for multiple toc sections. */
3797 unsigned int do_multi_toc:1;
3798 unsigned int multi_toc_needed:1;
3799 unsigned int second_toc_pass:1;
3800 unsigned int do_toc_opt:1;
3803 unsigned int stub_error:1;
3805 /* Temp used by ppc64_elf_process_dot_syms. */
3806 unsigned int twiddled_syms:1;
3808 /* Incremented every time we size stubs. */
3809 unsigned int stub_iteration;
3811 /* Small local sym cache. */
3812 struct sym_cache sym_cache;
3815 /* Rename some of the generic section flags to better document how they
3818 /* Nonzero if this section has TLS related relocations. */
3819 #define has_tls_reloc sec_flg0
3821 /* Nonzero if this section has a call to __tls_get_addr. */
3822 #define has_tls_get_addr_call sec_flg1
3824 /* Nonzero if this section has any toc or got relocs. */
3825 #define has_toc_reloc sec_flg2
3827 /* Nonzero if this section has a call to another section that uses
3829 #define makes_toc_func_call sec_flg3
3831 /* Recursion protection when determining above flag. */
3832 #define call_check_in_progress sec_flg4
3833 #define call_check_done sec_flg5
3835 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3837 #define ppc_hash_table(p) \
3838 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3839 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3841 #define ppc_stub_hash_lookup(table, string, create, copy) \
3842 ((struct ppc_stub_hash_entry *) \
3843 bfd_hash_lookup ((table), (string), (create), (copy)))
3845 #define ppc_branch_hash_lookup(table, string, create, copy) \
3846 ((struct ppc_branch_hash_entry *) \
3847 bfd_hash_lookup ((table), (string), (create), (copy)))
3849 /* Create an entry in the stub hash table. */
3851 static struct bfd_hash_entry *
3852 stub_hash_newfunc (struct bfd_hash_entry *entry,
3853 struct bfd_hash_table *table,
3856 /* Allocate the structure if it has not already been allocated by a
3860 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3865 /* Call the allocation method of the superclass. */
3866 entry = bfd_hash_newfunc (entry, table, string);
3869 struct ppc_stub_hash_entry *eh;
3871 /* Initialize the local fields. */
3872 eh = (struct ppc_stub_hash_entry *) entry;
3873 eh->stub_type = ppc_stub_none;
3874 eh->stub_sec = NULL;
3875 eh->stub_offset = 0;
3876 eh->target_value = 0;
3877 eh->target_section = NULL;
3885 /* Create an entry in the branch hash table. */
3887 static struct bfd_hash_entry *
3888 branch_hash_newfunc (struct bfd_hash_entry *entry,
3889 struct bfd_hash_table *table,
3892 /* Allocate the structure if it has not already been allocated by a
3896 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3901 /* Call the allocation method of the superclass. */
3902 entry = bfd_hash_newfunc (entry, table, string);
3905 struct ppc_branch_hash_entry *eh;
3907 /* Initialize the local fields. */
3908 eh = (struct ppc_branch_hash_entry *) entry;
3916 /* Create an entry in a ppc64 ELF linker hash table. */
3918 static struct bfd_hash_entry *
3919 link_hash_newfunc (struct bfd_hash_entry *entry,
3920 struct bfd_hash_table *table,
3923 /* Allocate the structure if it has not already been allocated by a
3927 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3932 /* Call the allocation method of the superclass. */
3933 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3936 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3938 memset (&eh->u.stub_cache, 0,
3939 (sizeof (struct ppc_link_hash_entry)
3940 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3942 /* When making function calls, old ABI code references function entry
3943 points (dot symbols), while new ABI code references the function
3944 descriptor symbol. We need to make any combination of reference and
3945 definition work together, without breaking archive linking.
3947 For a defined function "foo" and an undefined call to "bar":
3948 An old object defines "foo" and ".foo", references ".bar" (possibly
3950 A new object defines "foo" and references "bar".
3952 A new object thus has no problem with its undefined symbols being
3953 satisfied by definitions in an old object. On the other hand, the
3954 old object won't have ".bar" satisfied by a new object.
3956 Keep a list of newly added dot-symbols. */
3958 if (string[0] == '.')
3960 struct ppc_link_hash_table *htab;
3962 htab = (struct ppc_link_hash_table *) table;
3963 eh->u.next_dot_sym = htab->dot_syms;
3964 htab->dot_syms = eh;
3971 struct tocsave_entry {
3977 tocsave_htab_hash (const void *p)
3979 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
3980 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
3984 tocsave_htab_eq (const void *p1, const void *p2)
3986 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
3987 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
3988 return e1->sec == e2->sec && e1->offset == e2->offset;
3991 /* Create a ppc64 ELF linker hash table. */
3993 static struct bfd_link_hash_table *
3994 ppc64_elf_link_hash_table_create (bfd *abfd)
3996 struct ppc_link_hash_table *htab;
3997 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3999 htab = bfd_zmalloc (amt);
4003 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4004 sizeof (struct ppc_link_hash_entry),
4011 /* Init the stub hash table too. */
4012 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4013 sizeof (struct ppc_stub_hash_entry)))
4016 /* And the branch hash table. */
4017 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4018 sizeof (struct ppc_branch_hash_entry)))
4021 htab->tocsave_htab = htab_try_create (1024,
4025 if (htab->tocsave_htab == NULL)
4028 /* Initializing two fields of the union is just cosmetic. We really
4029 only care about glist, but when compiled on a 32-bit host the
4030 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4031 debugger inspection of these fields look nicer. */
4032 htab->elf.init_got_refcount.refcount = 0;
4033 htab->elf.init_got_refcount.glist = NULL;
4034 htab->elf.init_plt_refcount.refcount = 0;
4035 htab->elf.init_plt_refcount.glist = NULL;
4036 htab->elf.init_got_offset.offset = 0;
4037 htab->elf.init_got_offset.glist = NULL;
4038 htab->elf.init_plt_offset.offset = 0;
4039 htab->elf.init_plt_offset.glist = NULL;
4041 return &htab->elf.root;
4044 /* Free the derived linker hash table. */
4047 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4049 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4051 bfd_hash_table_free (&htab->stub_hash_table);
4052 bfd_hash_table_free (&htab->branch_hash_table);
4053 if (htab->tocsave_htab)
4054 htab_delete (htab->tocsave_htab);
4055 _bfd_elf_link_hash_table_free (hash);
4058 /* Create sections for linker generated code. */
4061 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4063 struct ppc_link_hash_table *htab;
4066 htab = ppc_hash_table (info);
4068 /* Create .sfpr for code to save and restore fp regs. */
4069 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4070 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4071 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4073 if (htab->sfpr == NULL
4074 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4077 /* Create .glink for lazy dynamic linking support. */
4078 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4080 if (htab->glink == NULL
4081 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4084 if (!info->no_ld_generated_unwind_info)
4086 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4087 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4088 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4091 if (htab->glink_eh_frame == NULL
4092 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4096 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4097 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4098 if (htab->iplt == NULL
4099 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4102 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4103 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4104 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4107 if (htab->reliplt == NULL
4108 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4111 /* Create branch lookup table for plt_branch stubs. */
4112 flags = (SEC_ALLOC | SEC_LOAD
4113 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4114 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4116 if (htab->brlt == NULL
4117 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4123 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4124 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4125 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4128 if (htab->relbrlt == NULL
4129 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4135 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4138 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4140 struct ppc_link_hash_table *htab;
4142 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4144 /* Always hook our dynamic sections into the first bfd, which is the
4145 linker created stub bfd. This ensures that the GOT header is at
4146 the start of the output TOC section. */
4147 htab = ppc_hash_table (info);
4150 htab->stub_bfd = abfd;
4151 htab->elf.dynobj = abfd;
4153 if (info->relocatable)
4156 return create_linkage_sections (htab->elf.dynobj, info);
4159 /* Build a name for an entry in the stub hash table. */
4162 ppc_stub_name (const asection *input_section,
4163 const asection *sym_sec,
4164 const struct ppc_link_hash_entry *h,
4165 const Elf_Internal_Rela *rel)
4170 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4171 offsets from a sym as a branch target? In fact, we could
4172 probably assume the addend is always zero. */
4173 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4177 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4178 stub_name = bfd_malloc (len);
4179 if (stub_name == NULL)
4182 len = sprintf (stub_name, "%08x.%s+%x",
4183 input_section->id & 0xffffffff,
4184 h->elf.root.root.string,
4185 (int) rel->r_addend & 0xffffffff);
4189 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4190 stub_name = bfd_malloc (len);
4191 if (stub_name == NULL)
4194 len = sprintf (stub_name, "%08x.%x:%x+%x",
4195 input_section->id & 0xffffffff,
4196 sym_sec->id & 0xffffffff,
4197 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4198 (int) rel->r_addend & 0xffffffff);
4200 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4201 stub_name[len - 2] = 0;
4205 /* Look up an entry in the stub hash. Stub entries are cached because
4206 creating the stub name takes a bit of time. */
4208 static struct ppc_stub_hash_entry *
4209 ppc_get_stub_entry (const asection *input_section,
4210 const asection *sym_sec,
4211 struct ppc_link_hash_entry *h,
4212 const Elf_Internal_Rela *rel,
4213 struct ppc_link_hash_table *htab)
4215 struct ppc_stub_hash_entry *stub_entry;
4216 const asection *id_sec;
4218 /* If this input section is part of a group of sections sharing one
4219 stub section, then use the id of the first section in the group.
4220 Stub names need to include a section id, as there may well be
4221 more than one stub used to reach say, printf, and we need to
4222 distinguish between them. */
4223 id_sec = htab->stub_group[input_section->id].link_sec;
4225 if (h != NULL && h->u.stub_cache != NULL
4226 && h->u.stub_cache->h == h
4227 && h->u.stub_cache->id_sec == id_sec)
4229 stub_entry = h->u.stub_cache;
4235 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4236 if (stub_name == NULL)
4239 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4240 stub_name, FALSE, FALSE);
4242 h->u.stub_cache = stub_entry;
4250 /* Add a new stub entry to the stub hash. Not all fields of the new
4251 stub entry are initialised. */
4253 static struct ppc_stub_hash_entry *
4254 ppc_add_stub (const char *stub_name,
4256 struct bfd_link_info *info)
4258 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4261 struct ppc_stub_hash_entry *stub_entry;
4263 link_sec = htab->stub_group[section->id].link_sec;
4264 stub_sec = htab->stub_group[section->id].stub_sec;
4265 if (stub_sec == NULL)
4267 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4268 if (stub_sec == NULL)
4274 namelen = strlen (link_sec->name);
4275 len = namelen + sizeof (STUB_SUFFIX);
4276 s_name = bfd_alloc (htab->stub_bfd, len);
4280 memcpy (s_name, link_sec->name, namelen);
4281 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4282 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4283 if (stub_sec == NULL)
4285 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4287 htab->stub_group[section->id].stub_sec = stub_sec;
4290 /* Enter this entry into the linker stub hash table. */
4291 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4293 if (stub_entry == NULL)
4295 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4296 section->owner, stub_name);
4300 stub_entry->stub_sec = stub_sec;
4301 stub_entry->stub_offset = 0;
4302 stub_entry->id_sec = link_sec;
4306 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4307 not already done. */
4310 create_got_section (bfd *abfd, struct bfd_link_info *info)
4312 asection *got, *relgot;
4314 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4316 if (!is_ppc64_elf (abfd))
4323 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4326 htab->got = bfd_get_linker_section (htab->elf.dynobj, ".got");
4331 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4332 | SEC_LINKER_CREATED);
4334 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4336 || !bfd_set_section_alignment (abfd, got, 3))
4339 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4340 flags | SEC_READONLY);
4342 || ! bfd_set_section_alignment (abfd, relgot, 3))
4345 ppc64_elf_tdata (abfd)->got = got;
4346 ppc64_elf_tdata (abfd)->relgot = relgot;
4350 /* Create the dynamic sections, and set up shortcuts. */
4353 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4355 struct ppc_link_hash_table *htab;
4357 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4360 htab = ppc_hash_table (info);
4365 htab->got = bfd_get_linker_section (dynobj, ".got");
4366 htab->plt = bfd_get_linker_section (dynobj, ".plt");
4367 htab->relplt = bfd_get_linker_section (dynobj, ".rela.plt");
4368 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4370 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4372 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4373 || (!info->shared && !htab->relbss))
4379 /* Follow indirect and warning symbol links. */
4381 static inline struct bfd_link_hash_entry *
4382 follow_link (struct bfd_link_hash_entry *h)
4384 while (h->type == bfd_link_hash_indirect
4385 || h->type == bfd_link_hash_warning)
4390 static inline struct elf_link_hash_entry *
4391 elf_follow_link (struct elf_link_hash_entry *h)
4393 return (struct elf_link_hash_entry *) follow_link (&h->root);
4396 static inline struct ppc_link_hash_entry *
4397 ppc_follow_link (struct ppc_link_hash_entry *h)
4399 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4402 /* Merge PLT info on FROM with that on TO. */
4405 move_plt_plist (struct ppc_link_hash_entry *from,
4406 struct ppc_link_hash_entry *to)
4408 if (from->elf.plt.plist != NULL)
4410 if (to->elf.plt.plist != NULL)
4412 struct plt_entry **entp;
4413 struct plt_entry *ent;
4415 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4417 struct plt_entry *dent;
4419 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4420 if (dent->addend == ent->addend)
4422 dent->plt.refcount += ent->plt.refcount;
4429 *entp = to->elf.plt.plist;
4432 to->elf.plt.plist = from->elf.plt.plist;
4433 from->elf.plt.plist = NULL;
4437 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4440 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4441 struct elf_link_hash_entry *dir,
4442 struct elf_link_hash_entry *ind)
4444 struct ppc_link_hash_entry *edir, *eind;
4446 edir = (struct ppc_link_hash_entry *) dir;
4447 eind = (struct ppc_link_hash_entry *) ind;
4449 edir->is_func |= eind->is_func;
4450 edir->is_func_descriptor |= eind->is_func_descriptor;
4451 edir->tls_mask |= eind->tls_mask;
4452 if (eind->oh != NULL)
4453 edir->oh = ppc_follow_link (eind->oh);
4455 /* If called to transfer flags for a weakdef during processing
4456 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4457 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4458 if (!(ELIMINATE_COPY_RELOCS
4459 && eind->elf.root.type != bfd_link_hash_indirect
4460 && edir->elf.dynamic_adjusted))
4461 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4463 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4464 edir->elf.ref_regular |= eind->elf.ref_regular;
4465 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4466 edir->elf.needs_plt |= eind->elf.needs_plt;
4468 /* Copy over any dynamic relocs we may have on the indirect sym. */
4469 if (eind->dyn_relocs != NULL)
4471 if (edir->dyn_relocs != NULL)
4473 struct elf_dyn_relocs **pp;
4474 struct elf_dyn_relocs *p;
4476 /* Add reloc counts against the indirect sym to the direct sym
4477 list. Merge any entries against the same section. */
4478 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4480 struct elf_dyn_relocs *q;
4482 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4483 if (q->sec == p->sec)
4485 q->pc_count += p->pc_count;
4486 q->count += p->count;
4493 *pp = edir->dyn_relocs;
4496 edir->dyn_relocs = eind->dyn_relocs;
4497 eind->dyn_relocs = NULL;
4500 /* If we were called to copy over info for a weak sym, that's all.
4501 You might think dyn_relocs need not be copied over; After all,
4502 both syms will be dynamic or both non-dynamic so we're just
4503 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4504 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4505 dyn_relocs in read-only sections, and it does so on what is the
4507 if (eind->elf.root.type != bfd_link_hash_indirect)
4510 /* Copy over got entries that we may have already seen to the
4511 symbol which just became indirect. */
4512 if (eind->elf.got.glist != NULL)
4514 if (edir->elf.got.glist != NULL)
4516 struct got_entry **entp;
4517 struct got_entry *ent;
4519 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4521 struct got_entry *dent;
4523 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4524 if (dent->addend == ent->addend
4525 && dent->owner == ent->owner
4526 && dent->tls_type == ent->tls_type)
4528 dent->got.refcount += ent->got.refcount;
4535 *entp = edir->elf.got.glist;
4538 edir->elf.got.glist = eind->elf.got.glist;
4539 eind->elf.got.glist = NULL;
4542 /* And plt entries. */
4543 move_plt_plist (eind, edir);
4545 if (eind->elf.dynindx != -1)
4547 if (edir->elf.dynindx != -1)
4548 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4549 edir->elf.dynstr_index);
4550 edir->elf.dynindx = eind->elf.dynindx;
4551 edir->elf.dynstr_index = eind->elf.dynstr_index;
4552 eind->elf.dynindx = -1;
4553 eind->elf.dynstr_index = 0;
4557 /* Find the function descriptor hash entry from the given function code
4558 hash entry FH. Link the entries via their OH fields. */
4560 static struct ppc_link_hash_entry *
4561 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4563 struct ppc_link_hash_entry *fdh = fh->oh;
4567 const char *fd_name = fh->elf.root.root.string + 1;
4569 fdh = (struct ppc_link_hash_entry *)
4570 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4574 fdh->is_func_descriptor = 1;
4580 return ppc_follow_link (fdh);
4583 /* Make a fake function descriptor sym for the code sym FH. */
4585 static struct ppc_link_hash_entry *
4586 make_fdh (struct bfd_link_info *info,
4587 struct ppc_link_hash_entry *fh)
4591 struct bfd_link_hash_entry *bh;
4592 struct ppc_link_hash_entry *fdh;
4594 abfd = fh->elf.root.u.undef.abfd;
4595 newsym = bfd_make_empty_symbol (abfd);
4596 newsym->name = fh->elf.root.root.string + 1;
4597 newsym->section = bfd_und_section_ptr;
4599 newsym->flags = BSF_WEAK;
4602 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4603 newsym->flags, newsym->section,
4604 newsym->value, NULL, FALSE, FALSE,
4608 fdh = (struct ppc_link_hash_entry *) bh;
4609 fdh->elf.non_elf = 0;
4611 fdh->is_func_descriptor = 1;
4618 /* Fix function descriptor symbols defined in .opd sections to be
4622 ppc64_elf_add_symbol_hook (bfd *ibfd,
4623 struct bfd_link_info *info,
4624 Elf_Internal_Sym *isym,
4625 const char **name ATTRIBUTE_UNUSED,
4626 flagword *flags ATTRIBUTE_UNUSED,
4628 bfd_vma *value ATTRIBUTE_UNUSED)
4630 if ((ibfd->flags & DYNAMIC) == 0
4631 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4632 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4634 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4636 if ((ibfd->flags & DYNAMIC) == 0)
4637 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4639 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4641 else if (*sec != NULL
4642 && strcmp ((*sec)->name, ".opd") == 0)
4643 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4648 /* This function makes an old ABI object reference to ".bar" cause the
4649 inclusion of a new ABI object archive that defines "bar".
4650 NAME is a symbol defined in an archive. Return a symbol in the hash
4651 table that might be satisfied by the archive symbols. */
4653 static struct elf_link_hash_entry *
4654 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4655 struct bfd_link_info *info,
4658 struct elf_link_hash_entry *h;
4662 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4664 /* Don't return this sym if it is a fake function descriptor
4665 created by add_symbol_adjust. */
4666 && !(h->root.type == bfd_link_hash_undefweak
4667 && ((struct ppc_link_hash_entry *) h)->fake))
4673 len = strlen (name);
4674 dot_name = bfd_alloc (abfd, len + 2);
4675 if (dot_name == NULL)
4676 return (struct elf_link_hash_entry *) 0 - 1;
4678 memcpy (dot_name + 1, name, len + 1);
4679 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4680 bfd_release (abfd, dot_name);
4684 /* This function satisfies all old ABI object references to ".bar" if a
4685 new ABI object defines "bar". Well, at least, undefined dot symbols
4686 are made weak. This stops later archive searches from including an
4687 object if we already have a function descriptor definition. It also
4688 prevents the linker complaining about undefined symbols.
4689 We also check and correct mismatched symbol visibility here. The
4690 most restrictive visibility of the function descriptor and the
4691 function entry symbol is used. */
4694 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4696 struct ppc_link_hash_table *htab;
4697 struct ppc_link_hash_entry *fdh;
4699 if (eh->elf.root.type == bfd_link_hash_indirect)
4702 if (eh->elf.root.type == bfd_link_hash_warning)
4703 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4705 if (eh->elf.root.root.string[0] != '.')
4708 htab = ppc_hash_table (info);
4712 fdh = lookup_fdh (eh, htab);
4715 if (!info->relocatable
4716 && (eh->elf.root.type == bfd_link_hash_undefined
4717 || eh->elf.root.type == bfd_link_hash_undefweak)
4718 && eh->elf.ref_regular)
4720 /* Make an undefweak function descriptor sym, which is enough to
4721 pull in an --as-needed shared lib, but won't cause link
4722 errors. Archives are handled elsewhere. */
4723 fdh = make_fdh (info, eh);
4726 fdh->elf.ref_regular = 1;
4731 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4732 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4733 if (entry_vis < descr_vis)
4734 fdh->elf.other += entry_vis - descr_vis;
4735 else if (entry_vis > descr_vis)
4736 eh->elf.other += descr_vis - entry_vis;
4738 if ((fdh->elf.root.type == bfd_link_hash_defined
4739 || fdh->elf.root.type == bfd_link_hash_defweak)
4740 && eh->elf.root.type == bfd_link_hash_undefined)
4742 eh->elf.root.type = bfd_link_hash_undefweak;
4743 eh->was_undefined = 1;
4744 htab->twiddled_syms = 1;
4751 /* Process list of dot-symbols we made in link_hash_newfunc. */
4754 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4756 struct ppc_link_hash_table *htab;
4757 struct ppc_link_hash_entry **p, *eh;
4759 if (!is_ppc64_elf (info->output_bfd))
4761 htab = ppc_hash_table (info);
4765 if (is_ppc64_elf (ibfd))
4767 p = &htab->dot_syms;
4768 while ((eh = *p) != NULL)
4771 if (&eh->elf == htab->elf.hgot)
4773 else if (htab->elf.hgot == NULL
4774 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
4775 htab->elf.hgot = &eh->elf;
4776 else if (!add_symbol_adjust (eh, info))
4778 p = &eh->u.next_dot_sym;
4782 /* Clear the list for non-ppc64 input files. */
4783 p = &htab->dot_syms;
4784 while ((eh = *p) != NULL)
4787 p = &eh->u.next_dot_sym;
4790 /* We need to fix the undefs list for any syms we have twiddled to
4792 if (htab->twiddled_syms)
4794 bfd_link_repair_undef_list (&htab->elf.root);
4795 htab->twiddled_syms = 0;
4800 /* Undo hash table changes when an --as-needed input file is determined
4801 not to be needed. */
4804 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4805 struct bfd_link_info *info)
4807 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4812 htab->dot_syms = NULL;
4816 /* If --just-symbols against a final linked binary, then assume we need
4817 toc adjusting stubs when calling functions defined there. */
4820 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4822 if ((sec->flags & SEC_CODE) != 0
4823 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
4824 && is_ppc64_elf (sec->owner))
4826 asection *got = bfd_get_section_by_name (sec->owner, ".got");
4828 && got->size >= elf_backend_got_header_size
4829 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
4830 sec->has_toc_reloc = 1;
4832 _bfd_elf_link_just_syms (sec, info);
4835 static struct plt_entry **
4836 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4837 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4839 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4840 struct plt_entry **local_plt;
4841 unsigned char *local_got_tls_masks;
4843 if (local_got_ents == NULL)
4845 bfd_size_type size = symtab_hdr->sh_info;
4847 size *= (sizeof (*local_got_ents)
4848 + sizeof (*local_plt)
4849 + sizeof (*local_got_tls_masks));
4850 local_got_ents = bfd_zalloc (abfd, size);
4851 if (local_got_ents == NULL)
4853 elf_local_got_ents (abfd) = local_got_ents;
4856 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4858 struct got_entry *ent;
4860 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4861 if (ent->addend == r_addend
4862 && ent->owner == abfd
4863 && ent->tls_type == tls_type)
4867 bfd_size_type amt = sizeof (*ent);
4868 ent = bfd_alloc (abfd, amt);
4871 ent->next = local_got_ents[r_symndx];
4872 ent->addend = r_addend;
4874 ent->tls_type = tls_type;
4875 ent->is_indirect = FALSE;
4876 ent->got.refcount = 0;
4877 local_got_ents[r_symndx] = ent;
4879 ent->got.refcount += 1;
4882 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4883 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
4884 local_got_tls_masks[r_symndx] |= tls_type;
4886 return local_plt + r_symndx;
4890 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4892 struct plt_entry *ent;
4894 for (ent = *plist; ent != NULL; ent = ent->next)
4895 if (ent->addend == addend)
4899 bfd_size_type amt = sizeof (*ent);
4900 ent = bfd_alloc (abfd, amt);
4904 ent->addend = addend;
4905 ent->plt.refcount = 0;
4908 ent->plt.refcount += 1;
4913 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4915 return (r_type == R_PPC64_REL24
4916 || r_type == R_PPC64_REL14
4917 || r_type == R_PPC64_REL14_BRTAKEN
4918 || r_type == R_PPC64_REL14_BRNTAKEN
4919 || r_type == R_PPC64_ADDR24
4920 || r_type == R_PPC64_ADDR14
4921 || r_type == R_PPC64_ADDR14_BRTAKEN
4922 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4925 /* Look through the relocs for a section during the first phase, and
4926 calculate needed space in the global offset table, procedure
4927 linkage table, and dynamic reloc sections. */
4930 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4931 asection *sec, const Elf_Internal_Rela *relocs)
4933 struct ppc_link_hash_table *htab;
4934 Elf_Internal_Shdr *symtab_hdr;
4935 struct elf_link_hash_entry **sym_hashes;
4936 const Elf_Internal_Rela *rel;
4937 const Elf_Internal_Rela *rel_end;
4939 asection **opd_sym_map;
4940 struct elf_link_hash_entry *tga, *dottga;
4942 if (info->relocatable)
4945 /* Don't do anything special with non-loaded, non-alloced sections.
4946 In particular, any relocs in such sections should not affect GOT
4947 and PLT reference counting (ie. we don't allow them to create GOT
4948 or PLT entries), there's no possibility or desire to optimize TLS
4949 relocs, and there's not much point in propagating relocs to shared
4950 libs that the dynamic linker won't relocate. */
4951 if ((sec->flags & SEC_ALLOC) == 0)
4954 BFD_ASSERT (is_ppc64_elf (abfd));
4956 htab = ppc_hash_table (info);
4960 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4961 FALSE, FALSE, TRUE);
4962 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4963 FALSE, FALSE, TRUE);
4964 symtab_hdr = &elf_symtab_hdr (abfd);
4965 sym_hashes = elf_sym_hashes (abfd);
4968 if (strcmp (sec->name, ".opd") == 0)
4970 /* Garbage collection needs some extra help with .opd sections.
4971 We don't want to necessarily keep everything referenced by
4972 relocs in .opd, as that would keep all functions. Instead,
4973 if we reference an .opd symbol (a function descriptor), we
4974 want to keep the function code symbol's section. This is
4975 easy for global symbols, but for local syms we need to keep
4976 information about the associated function section. */
4979 amt = sec->size * sizeof (*opd_sym_map) / 8;
4980 opd_sym_map = bfd_zalloc (abfd, amt);
4981 if (opd_sym_map == NULL)
4983 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4984 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4985 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4988 rel_end = relocs + sec->reloc_count;
4989 for (rel = relocs; rel < rel_end; rel++)
4991 unsigned long r_symndx;
4992 struct elf_link_hash_entry *h;
4993 enum elf_ppc64_reloc_type r_type;
4995 struct _ppc64_elf_section_data *ppc64_sec;
4996 struct plt_entry **ifunc;
4998 r_symndx = ELF64_R_SYM (rel->r_info);
4999 if (r_symndx < symtab_hdr->sh_info)
5003 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5004 h = elf_follow_link (h);
5006 /* PR15323, ref flags aren't set for references in the same
5008 h->root.non_ir_ref = 1;
5010 if (h == htab->elf.hgot)
5011 sec->has_toc_reloc = 1;
5018 if (h->type == STT_GNU_IFUNC)
5021 ifunc = &h->plt.plist;
5026 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5031 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5033 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5034 rel->r_addend, PLT_IFUNC);
5039 r_type = ELF64_R_TYPE (rel->r_info);
5040 if (is_branch_reloc (r_type))
5042 if (h != NULL && (h == tga || h == dottga))
5045 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5046 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5047 /* We have a new-style __tls_get_addr call with a marker
5051 /* Mark this section as having an old-style call. */
5052 sec->has_tls_get_addr_call = 1;
5055 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5057 && !update_plt_info (abfd, ifunc, rel->r_addend))
5065 /* These special tls relocs tie a call to __tls_get_addr with
5066 its parameter symbol. */
5069 case R_PPC64_GOT_TLSLD16:
5070 case R_PPC64_GOT_TLSLD16_LO:
5071 case R_PPC64_GOT_TLSLD16_HI:
5072 case R_PPC64_GOT_TLSLD16_HA:
5073 tls_type = TLS_TLS | TLS_LD;
5076 case R_PPC64_GOT_TLSGD16:
5077 case R_PPC64_GOT_TLSGD16_LO:
5078 case R_PPC64_GOT_TLSGD16_HI:
5079 case R_PPC64_GOT_TLSGD16_HA:
5080 tls_type = TLS_TLS | TLS_GD;
5083 case R_PPC64_GOT_TPREL16_DS:
5084 case R_PPC64_GOT_TPREL16_LO_DS:
5085 case R_PPC64_GOT_TPREL16_HI:
5086 case R_PPC64_GOT_TPREL16_HA:
5087 if (!info->executable)
5088 info->flags |= DF_STATIC_TLS;
5089 tls_type = TLS_TLS | TLS_TPREL;
5092 case R_PPC64_GOT_DTPREL16_DS:
5093 case R_PPC64_GOT_DTPREL16_LO_DS:
5094 case R_PPC64_GOT_DTPREL16_HI:
5095 case R_PPC64_GOT_DTPREL16_HA:
5096 tls_type = TLS_TLS | TLS_DTPREL;
5098 sec->has_tls_reloc = 1;
5102 case R_PPC64_GOT16_DS:
5103 case R_PPC64_GOT16_HA:
5104 case R_PPC64_GOT16_HI:
5105 case R_PPC64_GOT16_LO:
5106 case R_PPC64_GOT16_LO_DS:
5107 /* This symbol requires a global offset table entry. */
5108 sec->has_toc_reloc = 1;
5109 if (r_type == R_PPC64_GOT_TLSLD16
5110 || r_type == R_PPC64_GOT_TLSGD16
5111 || r_type == R_PPC64_GOT_TPREL16_DS
5112 || r_type == R_PPC64_GOT_DTPREL16_DS
5113 || r_type == R_PPC64_GOT16
5114 || r_type == R_PPC64_GOT16_DS)
5116 htab->do_multi_toc = 1;
5117 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5120 if (ppc64_elf_tdata (abfd)->got == NULL
5121 && !create_got_section (abfd, info))
5126 struct ppc_link_hash_entry *eh;
5127 struct got_entry *ent;
5129 eh = (struct ppc_link_hash_entry *) h;
5130 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5131 if (ent->addend == rel->r_addend
5132 && ent->owner == abfd
5133 && ent->tls_type == tls_type)
5137 bfd_size_type amt = sizeof (*ent);
5138 ent = bfd_alloc (abfd, amt);
5141 ent->next = eh->elf.got.glist;
5142 ent->addend = rel->r_addend;
5144 ent->tls_type = tls_type;
5145 ent->is_indirect = FALSE;
5146 ent->got.refcount = 0;
5147 eh->elf.got.glist = ent;
5149 ent->got.refcount += 1;
5150 eh->tls_mask |= tls_type;
5153 /* This is a global offset table entry for a local symbol. */
5154 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5155 rel->r_addend, tls_type))
5159 case R_PPC64_PLT16_HA:
5160 case R_PPC64_PLT16_HI:
5161 case R_PPC64_PLT16_LO:
5164 /* This symbol requires a procedure linkage table entry. We
5165 actually build the entry in adjust_dynamic_symbol,
5166 because this might be a case of linking PIC code without
5167 linking in any dynamic objects, in which case we don't
5168 need to generate a procedure linkage table after all. */
5171 /* It does not make sense to have a procedure linkage
5172 table entry for a local symbol. */
5173 bfd_set_error (bfd_error_bad_value);
5178 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5181 if (h->root.root.string[0] == '.'
5182 && h->root.root.string[1] != '\0')
5183 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5187 /* The following relocations don't need to propagate the
5188 relocation if linking a shared object since they are
5189 section relative. */
5190 case R_PPC64_SECTOFF:
5191 case R_PPC64_SECTOFF_LO:
5192 case R_PPC64_SECTOFF_HI:
5193 case R_PPC64_SECTOFF_HA:
5194 case R_PPC64_SECTOFF_DS:
5195 case R_PPC64_SECTOFF_LO_DS:
5196 case R_PPC64_DTPREL16:
5197 case R_PPC64_DTPREL16_LO:
5198 case R_PPC64_DTPREL16_HI:
5199 case R_PPC64_DTPREL16_HA:
5200 case R_PPC64_DTPREL16_DS:
5201 case R_PPC64_DTPREL16_LO_DS:
5202 case R_PPC64_DTPREL16_HIGHER:
5203 case R_PPC64_DTPREL16_HIGHERA:
5204 case R_PPC64_DTPREL16_HIGHEST:
5205 case R_PPC64_DTPREL16_HIGHESTA:
5210 case R_PPC64_REL16_LO:
5211 case R_PPC64_REL16_HI:
5212 case R_PPC64_REL16_HA:
5216 case R_PPC64_TOC16_DS:
5217 htab->do_multi_toc = 1;
5218 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5219 case R_PPC64_TOC16_LO:
5220 case R_PPC64_TOC16_HI:
5221 case R_PPC64_TOC16_HA:
5222 case R_PPC64_TOC16_LO_DS:
5223 sec->has_toc_reloc = 1;
5226 /* This relocation describes the C++ object vtable hierarchy.
5227 Reconstruct it for later use during GC. */
5228 case R_PPC64_GNU_VTINHERIT:
5229 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5233 /* This relocation describes which C++ vtable entries are actually
5234 used. Record for later use during GC. */
5235 case R_PPC64_GNU_VTENTRY:
5236 BFD_ASSERT (h != NULL);
5238 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5243 case R_PPC64_REL14_BRTAKEN:
5244 case R_PPC64_REL14_BRNTAKEN:
5246 asection *dest = NULL;
5248 /* Heuristic: If jumping outside our section, chances are
5249 we are going to need a stub. */
5252 /* If the sym is weak it may be overridden later, so
5253 don't assume we know where a weak sym lives. */
5254 if (h->root.type == bfd_link_hash_defined)
5255 dest = h->root.u.def.section;
5259 Elf_Internal_Sym *isym;
5261 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5266 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5270 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5275 if (h != NULL && ifunc == NULL)
5277 /* We may need a .plt entry if the function this reloc
5278 refers to is in a shared lib. */
5279 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5282 if (h->root.root.string[0] == '.'
5283 && h->root.root.string[1] != '\0')
5284 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5285 if (h == tga || h == dottga)
5286 sec->has_tls_reloc = 1;
5290 case R_PPC64_TPREL64:
5291 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5292 if (!info->executable)
5293 info->flags |= DF_STATIC_TLS;
5296 case R_PPC64_DTPMOD64:
5297 if (rel + 1 < rel_end
5298 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5299 && rel[1].r_offset == rel->r_offset + 8)
5300 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5302 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5305 case R_PPC64_DTPREL64:
5306 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5308 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5309 && rel[-1].r_offset == rel->r_offset - 8)
5310 /* This is the second reloc of a dtpmod, dtprel pair.
5311 Don't mark with TLS_DTPREL. */
5315 sec->has_tls_reloc = 1;
5318 struct ppc_link_hash_entry *eh;
5319 eh = (struct ppc_link_hash_entry *) h;
5320 eh->tls_mask |= tls_type;
5323 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5324 rel->r_addend, tls_type))
5327 ppc64_sec = ppc64_elf_section_data (sec);
5328 if (ppc64_sec->sec_type != sec_toc)
5332 /* One extra to simplify get_tls_mask. */
5333 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5334 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5335 if (ppc64_sec->u.toc.symndx == NULL)
5337 amt = sec->size * sizeof (bfd_vma) / 8;
5338 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5339 if (ppc64_sec->u.toc.add == NULL)
5341 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5342 ppc64_sec->sec_type = sec_toc;
5344 BFD_ASSERT (rel->r_offset % 8 == 0);
5345 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5346 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5348 /* Mark the second slot of a GD or LD entry.
5349 -1 to indicate GD and -2 to indicate LD. */
5350 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5351 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5352 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5353 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5356 case R_PPC64_TPREL16:
5357 case R_PPC64_TPREL16_LO:
5358 case R_PPC64_TPREL16_HI:
5359 case R_PPC64_TPREL16_HA:
5360 case R_PPC64_TPREL16_DS:
5361 case R_PPC64_TPREL16_LO_DS:
5362 case R_PPC64_TPREL16_HIGHER:
5363 case R_PPC64_TPREL16_HIGHERA:
5364 case R_PPC64_TPREL16_HIGHEST:
5365 case R_PPC64_TPREL16_HIGHESTA:
5368 if (!info->executable)
5369 info->flags |= DF_STATIC_TLS;
5374 case R_PPC64_ADDR64:
5375 if (opd_sym_map != NULL
5376 && rel + 1 < rel_end
5377 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5381 if (h->root.root.string[0] == '.'
5382 && h->root.root.string[1] != 0
5383 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5386 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5391 Elf_Internal_Sym *isym;
5393 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5398 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5399 if (s != NULL && s != sec)
5400 opd_sym_map[rel->r_offset / 8] = s;
5408 case R_PPC64_ADDR14:
5409 case R_PPC64_ADDR14_BRNTAKEN:
5410 case R_PPC64_ADDR14_BRTAKEN:
5411 case R_PPC64_ADDR16:
5412 case R_PPC64_ADDR16_DS:
5413 case R_PPC64_ADDR16_HA:
5414 case R_PPC64_ADDR16_HI:
5415 case R_PPC64_ADDR16_HIGHER:
5416 case R_PPC64_ADDR16_HIGHERA:
5417 case R_PPC64_ADDR16_HIGHEST:
5418 case R_PPC64_ADDR16_HIGHESTA:
5419 case R_PPC64_ADDR16_LO:
5420 case R_PPC64_ADDR16_LO_DS:
5421 case R_PPC64_ADDR24:
5422 case R_PPC64_ADDR32:
5423 case R_PPC64_UADDR16:
5424 case R_PPC64_UADDR32:
5425 case R_PPC64_UADDR64:
5427 if (h != NULL && !info->shared)
5428 /* We may need a copy reloc. */
5431 /* Don't propagate .opd relocs. */
5432 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5435 /* If we are creating a shared library, and this is a reloc
5436 against a global symbol, or a non PC relative reloc
5437 against a local symbol, then we need to copy the reloc
5438 into the shared library. However, if we are linking with
5439 -Bsymbolic, we do not need to copy a reloc against a
5440 global symbol which is defined in an object we are
5441 including in the link (i.e., DEF_REGULAR is set). At
5442 this point we have not seen all the input files, so it is
5443 possible that DEF_REGULAR is not set now but will be set
5444 later (it is never cleared). In case of a weak definition,
5445 DEF_REGULAR may be cleared later by a strong definition in
5446 a shared library. We account for that possibility below by
5447 storing information in the dyn_relocs field of the hash
5448 table entry. A similar situation occurs when creating
5449 shared libraries and symbol visibility changes render the
5452 If on the other hand, we are creating an executable, we
5453 may need to keep relocations for symbols satisfied by a
5454 dynamic library if we manage to avoid copy relocs for the
5458 && (must_be_dyn_reloc (info, r_type)
5460 && (!SYMBOLIC_BIND (info, h)
5461 || h->root.type == bfd_link_hash_defweak
5462 || !h->def_regular))))
5463 || (ELIMINATE_COPY_RELOCS
5466 && (h->root.type == bfd_link_hash_defweak
5467 || !h->def_regular))
5471 /* We must copy these reloc types into the output file.
5472 Create a reloc section in dynobj and make room for
5476 sreloc = _bfd_elf_make_dynamic_reloc_section
5477 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5483 /* If this is a global symbol, we count the number of
5484 relocations we need for this symbol. */
5487 struct elf_dyn_relocs *p;
5488 struct elf_dyn_relocs **head;
5490 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5492 if (p == NULL || p->sec != sec)
5494 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5504 if (!must_be_dyn_reloc (info, r_type))
5509 /* Track dynamic relocs needed for local syms too.
5510 We really need local syms available to do this
5512 struct ppc_dyn_relocs *p;
5513 struct ppc_dyn_relocs **head;
5514 bfd_boolean is_ifunc;
5517 Elf_Internal_Sym *isym;
5519 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5524 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5528 vpp = &elf_section_data (s)->local_dynrel;
5529 head = (struct ppc_dyn_relocs **) vpp;
5530 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5532 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5534 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5536 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5542 p->ifunc = is_ifunc;
5558 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5559 of the code entry point, and its section. */
5562 opd_entry_value (asection *opd_sec,
5564 asection **code_sec,
5566 bfd_boolean in_code_sec)
5568 bfd *opd_bfd = opd_sec->owner;
5569 Elf_Internal_Rela *relocs;
5570 Elf_Internal_Rela *lo, *hi, *look;
5573 /* No relocs implies we are linking a --just-symbols object, or looking
5574 at a final linked executable with addr2line or somesuch. */
5575 if (opd_sec->reloc_count == 0)
5579 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5580 return (bfd_vma) -1;
5582 val = bfd_get_64 (opd_bfd, buf);
5583 if (code_sec != NULL)
5585 asection *sec, *likely = NULL;
5591 && val < sec->vma + sec->size)
5597 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5599 && (sec->flags & SEC_LOAD) != 0
5600 && (sec->flags & SEC_ALLOC) != 0)
5605 if (code_off != NULL)
5606 *code_off = val - likely->vma;
5612 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5614 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5616 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5618 /* Go find the opd reloc at the sym address. */
5620 BFD_ASSERT (lo != NULL);
5621 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5625 look = lo + (hi - lo) / 2;
5626 if (look->r_offset < offset)
5628 else if (look->r_offset > offset)
5632 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5634 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5635 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5637 unsigned long symndx = ELF64_R_SYM (look->r_info);
5640 if (symndx < symtab_hdr->sh_info
5641 || elf_sym_hashes (opd_bfd) == NULL)
5643 Elf_Internal_Sym *sym;
5645 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5648 size_t symcnt = symtab_hdr->sh_info;
5649 if (elf_sym_hashes (opd_bfd) == NULL)
5650 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5651 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5652 0, NULL, NULL, NULL);
5655 symtab_hdr->contents = (bfd_byte *) sym;
5659 val = sym->st_value;
5660 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5661 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5665 struct elf_link_hash_entry **sym_hashes;
5666 struct elf_link_hash_entry *rh;
5668 sym_hashes = elf_sym_hashes (opd_bfd);
5669 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5672 rh = elf_follow_link (rh);
5673 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5674 || rh->root.type == bfd_link_hash_defweak);
5675 val = rh->root.u.def.value;
5676 sec = rh->root.u.def.section;
5680 /* Handle the odd case where we can be called
5681 during bfd_elf_link_add_symbols before the
5682 symbol hashes have been fully populated. */
5683 Elf_Internal_Sym *sym;
5685 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
5686 symndx, NULL, NULL, NULL);
5690 val = sym->st_value;
5691 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5695 val += look->r_addend;
5696 if (code_off != NULL)
5698 if (code_sec != NULL)
5700 if (in_code_sec && *code_sec != sec)
5705 if (sec != NULL && sec->output_section != NULL)
5706 val += sec->output_section->vma + sec->output_offset;
5715 /* If the ELF symbol SYM might be a function in SEC, return the
5716 function size and set *CODE_OFF to the function's entry point,
5717 otherwise return zero. */
5719 static bfd_size_type
5720 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
5725 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
5726 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
5730 if (!(sym->flags & BSF_SYNTHETIC))
5731 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
5733 if (strcmp (sym->section->name, ".opd") == 0)
5735 if (opd_entry_value (sym->section, sym->value,
5736 &sec, code_off, TRUE) == (bfd_vma) -1)
5738 /* An old ABI binary with dot-syms has a size of 24 on the .opd
5739 symbol. This size has nothing to do with the code size of the
5740 function, which is what we're supposed to return, but the
5741 code size isn't available without looking up the dot-sym.
5742 However, doing that would be a waste of time particularly
5743 since elf_find_function will look at the dot-sym anyway.
5744 Now, elf_find_function will keep the largest size of any
5745 function sym found at the code address of interest, so return
5746 1 here to avoid it incorrectly caching a larger function size
5747 for a small function. This does mean we return the wrong
5748 size for a new-ABI function of size 24, but all that does is
5749 disable caching for such functions. */
5755 if (sym->section != sec)
5757 *code_off = sym->value;
5764 /* Return true if symbol is defined in a regular object file. */
5767 is_static_defined (struct elf_link_hash_entry *h)
5769 return ((h->root.type == bfd_link_hash_defined
5770 || h->root.type == bfd_link_hash_defweak)
5771 && h->root.u.def.section != NULL
5772 && h->root.u.def.section->output_section != NULL);
5775 /* If FDH is a function descriptor symbol, return the associated code
5776 entry symbol if it is defined. Return NULL otherwise. */
5778 static struct ppc_link_hash_entry *
5779 defined_code_entry (struct ppc_link_hash_entry *fdh)
5781 if (fdh->is_func_descriptor)
5783 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5784 if (fh->elf.root.type == bfd_link_hash_defined
5785 || fh->elf.root.type == bfd_link_hash_defweak)
5791 /* If FH is a function code entry symbol, return the associated
5792 function descriptor symbol if it is defined. Return NULL otherwise. */
5794 static struct ppc_link_hash_entry *
5795 defined_func_desc (struct ppc_link_hash_entry *fh)
5798 && fh->oh->is_func_descriptor)
5800 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5801 if (fdh->elf.root.type == bfd_link_hash_defined
5802 || fdh->elf.root.type == bfd_link_hash_defweak)
5808 /* Mark all our entry sym sections, both opd and code section. */
5811 ppc64_elf_gc_keep (struct bfd_link_info *info)
5813 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5814 struct bfd_sym_chain *sym;
5819 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5821 struct ppc_link_hash_entry *eh, *fh;
5824 eh = (struct ppc_link_hash_entry *)
5825 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5828 if (eh->elf.root.type != bfd_link_hash_defined
5829 && eh->elf.root.type != bfd_link_hash_defweak)
5832 fh = defined_code_entry (eh);
5835 sec = fh->elf.root.u.def.section;
5836 sec->flags |= SEC_KEEP;
5838 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5839 && opd_entry_value (eh->elf.root.u.def.section,
5840 eh->elf.root.u.def.value,
5841 &sec, NULL, FALSE) != (bfd_vma) -1)
5842 sec->flags |= SEC_KEEP;
5844 sec = eh->elf.root.u.def.section;
5845 sec->flags |= SEC_KEEP;
5849 /* Mark sections containing dynamically referenced symbols. When
5850 building shared libraries, we must assume that any visible symbol is
5854 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5856 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5857 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5858 struct ppc_link_hash_entry *fdh;
5860 /* Dynamic linking info is on the func descriptor sym. */
5861 fdh = defined_func_desc (eh);
5865 if ((eh->elf.root.type == bfd_link_hash_defined
5866 || eh->elf.root.type == bfd_link_hash_defweak)
5867 && (eh->elf.ref_dynamic
5868 || (!info->executable
5869 && eh->elf.def_regular
5870 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5871 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
5872 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
5873 || !bfd_hide_sym_by_version (info->version_info,
5874 eh->elf.root.root.string)))))
5877 struct ppc_link_hash_entry *fh;
5879 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5881 /* Function descriptor syms cause the associated
5882 function code sym section to be marked. */
5883 fh = defined_code_entry (eh);
5886 code_sec = fh->elf.root.u.def.section;
5887 code_sec->flags |= SEC_KEEP;
5889 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5890 && opd_entry_value (eh->elf.root.u.def.section,
5891 eh->elf.root.u.def.value,
5892 &code_sec, NULL, FALSE) != (bfd_vma) -1)
5893 code_sec->flags |= SEC_KEEP;
5899 /* Return the section that should be marked against GC for a given
5903 ppc64_elf_gc_mark_hook (asection *sec,
5904 struct bfd_link_info *info,
5905 Elf_Internal_Rela *rel,
5906 struct elf_link_hash_entry *h,
5907 Elf_Internal_Sym *sym)
5911 /* Syms return NULL if we're marking .opd, so we avoid marking all
5912 function sections, as all functions are referenced in .opd. */
5914 if (get_opd_info (sec) != NULL)
5919 enum elf_ppc64_reloc_type r_type;
5920 struct ppc_link_hash_entry *eh, *fh, *fdh;
5922 r_type = ELF64_R_TYPE (rel->r_info);
5925 case R_PPC64_GNU_VTINHERIT:
5926 case R_PPC64_GNU_VTENTRY:
5930 switch (h->root.type)
5932 case bfd_link_hash_defined:
5933 case bfd_link_hash_defweak:
5934 eh = (struct ppc_link_hash_entry *) h;
5935 fdh = defined_func_desc (eh);
5939 /* Function descriptor syms cause the associated
5940 function code sym section to be marked. */
5941 fh = defined_code_entry (eh);
5944 /* They also mark their opd section. */
5945 eh->elf.root.u.def.section->gc_mark = 1;
5947 rsec = fh->elf.root.u.def.section;
5949 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5950 && opd_entry_value (eh->elf.root.u.def.section,
5951 eh->elf.root.u.def.value,
5952 &rsec, NULL, FALSE) != (bfd_vma) -1)
5953 eh->elf.root.u.def.section->gc_mark = 1;
5955 rsec = h->root.u.def.section;
5958 case bfd_link_hash_common:
5959 rsec = h->root.u.c.p->section;
5963 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5969 struct _opd_sec_data *opd;
5971 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5972 opd = get_opd_info (rsec);
5973 if (opd != NULL && opd->func_sec != NULL)
5977 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5984 /* Update the .got, .plt. and dynamic reloc reference counts for the
5985 section being removed. */
5988 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5989 asection *sec, const Elf_Internal_Rela *relocs)
5991 struct ppc_link_hash_table *htab;
5992 Elf_Internal_Shdr *symtab_hdr;
5993 struct elf_link_hash_entry **sym_hashes;
5994 struct got_entry **local_got_ents;
5995 const Elf_Internal_Rela *rel, *relend;
5997 if (info->relocatable)
6000 if ((sec->flags & SEC_ALLOC) == 0)
6003 elf_section_data (sec)->local_dynrel = NULL;
6005 htab = ppc_hash_table (info);
6009 symtab_hdr = &elf_symtab_hdr (abfd);
6010 sym_hashes = elf_sym_hashes (abfd);
6011 local_got_ents = elf_local_got_ents (abfd);
6013 relend = relocs + sec->reloc_count;
6014 for (rel = relocs; rel < relend; rel++)
6016 unsigned long r_symndx;
6017 enum elf_ppc64_reloc_type r_type;
6018 struct elf_link_hash_entry *h = NULL;
6019 unsigned char tls_type = 0;
6021 r_symndx = ELF64_R_SYM (rel->r_info);
6022 r_type = ELF64_R_TYPE (rel->r_info);
6023 if (r_symndx >= symtab_hdr->sh_info)
6025 struct ppc_link_hash_entry *eh;
6026 struct elf_dyn_relocs **pp;
6027 struct elf_dyn_relocs *p;
6029 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6030 h = elf_follow_link (h);
6031 eh = (struct ppc_link_hash_entry *) h;
6033 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6036 /* Everything must go for SEC. */
6042 if (is_branch_reloc (r_type))
6044 struct plt_entry **ifunc = NULL;
6047 if (h->type == STT_GNU_IFUNC)
6048 ifunc = &h->plt.plist;
6050 else if (local_got_ents != NULL)
6052 struct plt_entry **local_plt = (struct plt_entry **)
6053 (local_got_ents + symtab_hdr->sh_info);
6054 unsigned char *local_got_tls_masks = (unsigned char *)
6055 (local_plt + symtab_hdr->sh_info);
6056 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6057 ifunc = local_plt + r_symndx;
6061 struct plt_entry *ent;
6063 for (ent = *ifunc; ent != NULL; ent = ent->next)
6064 if (ent->addend == rel->r_addend)
6068 if (ent->plt.refcount > 0)
6069 ent->plt.refcount -= 1;
6076 case R_PPC64_GOT_TLSLD16:
6077 case R_PPC64_GOT_TLSLD16_LO:
6078 case R_PPC64_GOT_TLSLD16_HI:
6079 case R_PPC64_GOT_TLSLD16_HA:
6080 tls_type = TLS_TLS | TLS_LD;
6083 case R_PPC64_GOT_TLSGD16:
6084 case R_PPC64_GOT_TLSGD16_LO:
6085 case R_PPC64_GOT_TLSGD16_HI:
6086 case R_PPC64_GOT_TLSGD16_HA:
6087 tls_type = TLS_TLS | TLS_GD;
6090 case R_PPC64_GOT_TPREL16_DS:
6091 case R_PPC64_GOT_TPREL16_LO_DS:
6092 case R_PPC64_GOT_TPREL16_HI:
6093 case R_PPC64_GOT_TPREL16_HA:
6094 tls_type = TLS_TLS | TLS_TPREL;
6097 case R_PPC64_GOT_DTPREL16_DS:
6098 case R_PPC64_GOT_DTPREL16_LO_DS:
6099 case R_PPC64_GOT_DTPREL16_HI:
6100 case R_PPC64_GOT_DTPREL16_HA:
6101 tls_type = TLS_TLS | TLS_DTPREL;
6105 case R_PPC64_GOT16_DS:
6106 case R_PPC64_GOT16_HA:
6107 case R_PPC64_GOT16_HI:
6108 case R_PPC64_GOT16_LO:
6109 case R_PPC64_GOT16_LO_DS:
6112 struct got_entry *ent;
6117 ent = local_got_ents[r_symndx];
6119 for (; ent != NULL; ent = ent->next)
6120 if (ent->addend == rel->r_addend
6121 && ent->owner == abfd
6122 && ent->tls_type == tls_type)
6126 if (ent->got.refcount > 0)
6127 ent->got.refcount -= 1;
6131 case R_PPC64_PLT16_HA:
6132 case R_PPC64_PLT16_HI:
6133 case R_PPC64_PLT16_LO:
6137 case R_PPC64_REL14_BRNTAKEN:
6138 case R_PPC64_REL14_BRTAKEN:
6142 struct plt_entry *ent;
6144 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6145 if (ent->addend == rel->r_addend)
6147 if (ent != NULL && ent->plt.refcount > 0)
6148 ent->plt.refcount -= 1;
6159 /* The maximum size of .sfpr. */
6160 #define SFPR_MAX (218*4)
6162 struct sfpr_def_parms
6164 const char name[12];
6165 unsigned char lo, hi;
6166 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6167 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6170 /* Auto-generate _save*, _rest* functions in .sfpr. */
6173 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6175 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6177 size_t len = strlen (parm->name);
6178 bfd_boolean writing = FALSE;
6184 memcpy (sym, parm->name, len);
6187 for (i = parm->lo; i <= parm->hi; i++)
6189 struct elf_link_hash_entry *h;
6191 sym[len + 0] = i / 10 + '0';
6192 sym[len + 1] = i % 10 + '0';
6193 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6197 h->root.type = bfd_link_hash_defined;
6198 h->root.u.def.section = htab->sfpr;
6199 h->root.u.def.value = htab->sfpr->size;
6202 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6204 if (htab->sfpr->contents == NULL)
6206 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6207 if (htab->sfpr->contents == NULL)
6213 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6215 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6217 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6218 htab->sfpr->size = p - htab->sfpr->contents;
6226 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6228 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6233 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6235 p = savegpr0 (abfd, p, r);
6236 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6238 bfd_put_32 (abfd, BLR, p);
6243 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6245 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6250 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6252 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6254 p = restgpr0 (abfd, p, r);
6255 bfd_put_32 (abfd, MTLR_R0, p);
6259 p = restgpr0 (abfd, p, 30);
6260 p = restgpr0 (abfd, p, 31);
6262 bfd_put_32 (abfd, BLR, p);
6267 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6269 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6274 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6276 p = savegpr1 (abfd, p, r);
6277 bfd_put_32 (abfd, BLR, p);
6282 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6284 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6289 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6291 p = restgpr1 (abfd, p, r);
6292 bfd_put_32 (abfd, BLR, p);
6297 savefpr (bfd *abfd, bfd_byte *p, int r)
6299 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6304 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6306 p = savefpr (abfd, p, r);
6307 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6309 bfd_put_32 (abfd, BLR, p);
6314 restfpr (bfd *abfd, bfd_byte *p, int r)
6316 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6321 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6323 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6325 p = restfpr (abfd, p, r);
6326 bfd_put_32 (abfd, MTLR_R0, p);
6330 p = restfpr (abfd, p, 30);
6331 p = restfpr (abfd, p, 31);
6333 bfd_put_32 (abfd, BLR, p);
6338 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6340 p = savefpr (abfd, p, r);
6341 bfd_put_32 (abfd, BLR, p);
6346 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6348 p = restfpr (abfd, p, r);
6349 bfd_put_32 (abfd, BLR, p);
6354 savevr (bfd *abfd, bfd_byte *p, int r)
6356 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6358 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6363 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6365 p = savevr (abfd, p, r);
6366 bfd_put_32 (abfd, BLR, p);
6371 restvr (bfd *abfd, bfd_byte *p, int r)
6373 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6375 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6380 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6382 p = restvr (abfd, p, r);
6383 bfd_put_32 (abfd, BLR, p);
6387 /* Called via elf_link_hash_traverse to transfer dynamic linking
6388 information on function code symbol entries to their corresponding
6389 function descriptor symbol entries. */
6392 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6394 struct bfd_link_info *info;
6395 struct ppc_link_hash_table *htab;
6396 struct plt_entry *ent;
6397 struct ppc_link_hash_entry *fh;
6398 struct ppc_link_hash_entry *fdh;
6399 bfd_boolean force_local;
6401 fh = (struct ppc_link_hash_entry *) h;
6402 if (fh->elf.root.type == bfd_link_hash_indirect)
6406 htab = ppc_hash_table (info);
6410 /* Resolve undefined references to dot-symbols as the value
6411 in the function descriptor, if we have one in a regular object.
6412 This is to satisfy cases like ".quad .foo". Calls to functions
6413 in dynamic objects are handled elsewhere. */
6414 if (fh->elf.root.type == bfd_link_hash_undefweak
6415 && fh->was_undefined
6416 && (fdh = defined_func_desc (fh)) != NULL
6417 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6418 && opd_entry_value (fdh->elf.root.u.def.section,
6419 fdh->elf.root.u.def.value,
6420 &fh->elf.root.u.def.section,
6421 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6423 fh->elf.root.type = fdh->elf.root.type;
6424 fh->elf.forced_local = 1;
6425 fh->elf.def_regular = fdh->elf.def_regular;
6426 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6429 /* If this is a function code symbol, transfer dynamic linking
6430 information to the function descriptor symbol. */
6434 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6435 if (ent->plt.refcount > 0)
6438 || fh->elf.root.root.string[0] != '.'
6439 || fh->elf.root.root.string[1] == '\0')
6442 /* Find the corresponding function descriptor symbol. Create it
6443 as undefined if necessary. */
6445 fdh = lookup_fdh (fh, htab);
6447 && !info->executable
6448 && (fh->elf.root.type == bfd_link_hash_undefined
6449 || fh->elf.root.type == bfd_link_hash_undefweak))
6451 fdh = make_fdh (info, fh);
6456 /* Fake function descriptors are made undefweak. If the function
6457 code symbol is strong undefined, make the fake sym the same.
6458 If the function code symbol is defined, then force the fake
6459 descriptor local; We can't support overriding of symbols in a
6460 shared library on a fake descriptor. */
6464 && fdh->elf.root.type == bfd_link_hash_undefweak)
6466 if (fh->elf.root.type == bfd_link_hash_undefined)
6468 fdh->elf.root.type = bfd_link_hash_undefined;
6469 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6471 else if (fh->elf.root.type == bfd_link_hash_defined
6472 || fh->elf.root.type == bfd_link_hash_defweak)
6474 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6479 && !fdh->elf.forced_local
6480 && (!info->executable
6481 || fdh->elf.def_dynamic
6482 || fdh->elf.ref_dynamic
6483 || (fdh->elf.root.type == bfd_link_hash_undefweak
6484 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6486 if (fdh->elf.dynindx == -1)
6487 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6489 fdh->elf.ref_regular |= fh->elf.ref_regular;
6490 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6491 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6492 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6493 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6495 move_plt_plist (fh, fdh);
6496 fdh->elf.needs_plt = 1;
6498 fdh->is_func_descriptor = 1;
6503 /* Now that the info is on the function descriptor, clear the
6504 function code sym info. Any function code syms for which we
6505 don't have a definition in a regular file, we force local.
6506 This prevents a shared library from exporting syms that have
6507 been imported from another library. Function code syms that
6508 are really in the library we must leave global to prevent the
6509 linker dragging in a definition from a static library. */
6510 force_local = (!fh->elf.def_regular
6512 || !fdh->elf.def_regular
6513 || fdh->elf.forced_local);
6514 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6519 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6520 this hook to a) provide some gcc support functions, and b) transfer
6521 dynamic linking information gathered so far on function code symbol
6522 entries, to their corresponding function descriptor symbol entries. */
6525 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6526 struct bfd_link_info *info)
6528 struct ppc_link_hash_table *htab;
6530 static const struct sfpr_def_parms funcs[] =
6532 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6533 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6534 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6535 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6536 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6537 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6538 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6539 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6540 { "._savef", 14, 31, savefpr, savefpr1_tail },
6541 { "._restf", 14, 31, restfpr, restfpr1_tail },
6542 { "_savevr_", 20, 31, savevr, savevr_tail },
6543 { "_restvr_", 20, 31, restvr, restvr_tail }
6546 htab = ppc_hash_table (info);
6550 if (htab->elf.hgot != NULL)
6552 htab->elf.hgot->root.type = bfd_link_hash_new;
6553 htab->elf.hgot->type = STT_OBJECT;
6554 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6557 if (htab->sfpr == NULL)
6558 /* We don't have any relocs. */
6561 /* Provide any missing _save* and _rest* functions. */
6562 htab->sfpr->size = 0;
6563 if (!info->relocatable)
6564 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6565 if (!sfpr_define (info, &funcs[i]))
6568 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6570 if (htab->sfpr->size == 0)
6571 htab->sfpr->flags |= SEC_EXCLUDE;
6576 /* Adjust a symbol defined by a dynamic object and referenced by a
6577 regular object. The current definition is in some section of the
6578 dynamic object, but we're not including those sections. We have to
6579 change the definition to something the rest of the link can
6583 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6584 struct elf_link_hash_entry *h)
6586 struct ppc_link_hash_table *htab;
6589 htab = ppc_hash_table (info);
6593 /* Deal with function syms. */
6594 if (h->type == STT_FUNC
6595 || h->type == STT_GNU_IFUNC
6598 /* Clear procedure linkage table information for any symbol that
6599 won't need a .plt entry. */
6600 struct plt_entry *ent;
6601 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6602 if (ent->plt.refcount > 0)
6605 || (h->type != STT_GNU_IFUNC
6606 && (SYMBOL_CALLS_LOCAL (info, h)
6607 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6608 && h->root.type == bfd_link_hash_undefweak))))
6610 h->plt.plist = NULL;
6615 h->plt.plist = NULL;
6617 /* If this is a weak symbol, and there is a real definition, the
6618 processor independent code will have arranged for us to see the
6619 real definition first, and we can just use the same value. */
6620 if (h->u.weakdef != NULL)
6622 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6623 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6624 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6625 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6626 if (ELIMINATE_COPY_RELOCS)
6627 h->non_got_ref = h->u.weakdef->non_got_ref;
6631 /* If we are creating a shared library, we must presume that the
6632 only references to the symbol are via the global offset table.
6633 For such cases we need not do anything here; the relocations will
6634 be handled correctly by relocate_section. */
6638 /* If there are no references to this symbol that do not use the
6639 GOT, we don't need to generate a copy reloc. */
6640 if (!h->non_got_ref)
6643 /* Don't generate a copy reloc for symbols defined in the executable. */
6644 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6647 if (ELIMINATE_COPY_RELOCS)
6649 struct ppc_link_hash_entry * eh;
6650 struct elf_dyn_relocs *p;
6652 eh = (struct ppc_link_hash_entry *) h;
6653 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6655 s = p->sec->output_section;
6656 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6660 /* If we didn't find any dynamic relocs in read-only sections, then
6661 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6669 if (h->plt.plist != NULL)
6671 /* We should never get here, but unfortunately there are versions
6672 of gcc out there that improperly (for this ABI) put initialized
6673 function pointers, vtable refs and suchlike in read-only
6674 sections. Allow them to proceed, but warn that this might
6675 break at runtime. */
6676 info->callbacks->einfo
6677 (_("%P: copy reloc against `%T' requires lazy plt linking; "
6678 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6679 h->root.root.string);
6682 /* This is a reference to a symbol defined by a dynamic object which
6683 is not a function. */
6685 /* We must allocate the symbol in our .dynbss section, which will
6686 become part of the .bss section of the executable. There will be
6687 an entry for this symbol in the .dynsym section. The dynamic
6688 object will contain position independent code, so all references
6689 from the dynamic object to this symbol will go through the global
6690 offset table. The dynamic linker will use the .dynsym entry to
6691 determine the address it must put in the global offset table, so
6692 both the dynamic object and the regular object will refer to the
6693 same memory location for the variable. */
6695 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6696 to copy the initial value out of the dynamic object and into the
6697 runtime process image. We need to remember the offset into the
6698 .rela.bss section we are going to use. */
6699 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6701 htab->relbss->size += sizeof (Elf64_External_Rela);
6707 return _bfd_elf_adjust_dynamic_copy (h, s);
6710 /* If given a function descriptor symbol, hide both the function code
6711 sym and the descriptor. */
6713 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6714 struct elf_link_hash_entry *h,
6715 bfd_boolean force_local)
6717 struct ppc_link_hash_entry *eh;
6718 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6720 eh = (struct ppc_link_hash_entry *) h;
6721 if (eh->is_func_descriptor)
6723 struct ppc_link_hash_entry *fh = eh->oh;
6728 struct ppc_link_hash_table *htab;
6731 /* We aren't supposed to use alloca in BFD because on
6732 systems which do not have alloca the version in libiberty
6733 calls xmalloc, which might cause the program to crash
6734 when it runs out of memory. This function doesn't have a
6735 return status, so there's no way to gracefully return an
6736 error. So cheat. We know that string[-1] can be safely
6737 accessed; It's either a string in an ELF string table,
6738 or allocated in an objalloc structure. */
6740 p = eh->elf.root.root.string - 1;
6743 htab = ppc_hash_table (info);
6747 fh = (struct ppc_link_hash_entry *)
6748 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6751 /* Unfortunately, if it so happens that the string we were
6752 looking for was allocated immediately before this string,
6753 then we overwrote the string terminator. That's the only
6754 reason the lookup should fail. */
6757 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6758 while (q >= eh->elf.root.root.string && *q == *p)
6760 if (q < eh->elf.root.root.string && *p == '.')
6761 fh = (struct ppc_link_hash_entry *)
6762 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6771 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6776 get_sym_h (struct elf_link_hash_entry **hp,
6777 Elf_Internal_Sym **symp,
6779 unsigned char **tls_maskp,
6780 Elf_Internal_Sym **locsymsp,
6781 unsigned long r_symndx,
6784 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6786 if (r_symndx >= symtab_hdr->sh_info)
6788 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6789 struct elf_link_hash_entry *h;
6791 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6792 h = elf_follow_link (h);
6800 if (symsecp != NULL)
6802 asection *symsec = NULL;
6803 if (h->root.type == bfd_link_hash_defined
6804 || h->root.type == bfd_link_hash_defweak)
6805 symsec = h->root.u.def.section;
6809 if (tls_maskp != NULL)
6811 struct ppc_link_hash_entry *eh;
6813 eh = (struct ppc_link_hash_entry *) h;
6814 *tls_maskp = &eh->tls_mask;
6819 Elf_Internal_Sym *sym;
6820 Elf_Internal_Sym *locsyms = *locsymsp;
6822 if (locsyms == NULL)
6824 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6825 if (locsyms == NULL)
6826 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6827 symtab_hdr->sh_info,
6828 0, NULL, NULL, NULL);
6829 if (locsyms == NULL)
6831 *locsymsp = locsyms;
6833 sym = locsyms + r_symndx;
6841 if (symsecp != NULL)
6842 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6844 if (tls_maskp != NULL)
6846 struct got_entry **lgot_ents;
6847 unsigned char *tls_mask;
6850 lgot_ents = elf_local_got_ents (ibfd);
6851 if (lgot_ents != NULL)
6853 struct plt_entry **local_plt = (struct plt_entry **)
6854 (lgot_ents + symtab_hdr->sh_info);
6855 unsigned char *lgot_masks = (unsigned char *)
6856 (local_plt + symtab_hdr->sh_info);
6857 tls_mask = &lgot_masks[r_symndx];
6859 *tls_maskp = tls_mask;
6865 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6866 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6867 type suitable for optimization, and 1 otherwise. */
6870 get_tls_mask (unsigned char **tls_maskp,
6871 unsigned long *toc_symndx,
6872 bfd_vma *toc_addend,
6873 Elf_Internal_Sym **locsymsp,
6874 const Elf_Internal_Rela *rel,
6877 unsigned long r_symndx;
6879 struct elf_link_hash_entry *h;
6880 Elf_Internal_Sym *sym;
6884 r_symndx = ELF64_R_SYM (rel->r_info);
6885 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6888 if ((*tls_maskp != NULL && **tls_maskp != 0)
6890 || ppc64_elf_section_data (sec) == NULL
6891 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6894 /* Look inside a TOC section too. */
6897 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6898 off = h->root.u.def.value;
6901 off = sym->st_value;
6902 off += rel->r_addend;
6903 BFD_ASSERT (off % 8 == 0);
6904 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6905 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6906 if (toc_symndx != NULL)
6907 *toc_symndx = r_symndx;
6908 if (toc_addend != NULL)
6909 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6910 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6912 if ((h == NULL || is_static_defined (h))
6913 && (next_r == -1 || next_r == -2))
6918 /* Find (or create) an entry in the tocsave hash table. */
6920 static struct tocsave_entry *
6921 tocsave_find (struct ppc_link_hash_table *htab,
6922 enum insert_option insert,
6923 Elf_Internal_Sym **local_syms,
6924 const Elf_Internal_Rela *irela,
6927 unsigned long r_indx;
6928 struct elf_link_hash_entry *h;
6929 Elf_Internal_Sym *sym;
6930 struct tocsave_entry ent, *p;
6932 struct tocsave_entry **slot;
6934 r_indx = ELF64_R_SYM (irela->r_info);
6935 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
6937 if (ent.sec == NULL || ent.sec->output_section == NULL)
6939 (*_bfd_error_handler)
6940 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6945 ent.offset = h->root.u.def.value;
6947 ent.offset = sym->st_value;
6948 ent.offset += irela->r_addend;
6950 hash = tocsave_htab_hash (&ent);
6951 slot = ((struct tocsave_entry **)
6952 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
6958 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
6967 /* Adjust all global syms defined in opd sections. In gcc generated
6968 code for the old ABI, these will already have been done. */
6971 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6973 struct ppc_link_hash_entry *eh;
6975 struct _opd_sec_data *opd;
6977 if (h->root.type == bfd_link_hash_indirect)
6980 if (h->root.type != bfd_link_hash_defined
6981 && h->root.type != bfd_link_hash_defweak)
6984 eh = (struct ppc_link_hash_entry *) h;
6985 if (eh->adjust_done)
6988 sym_sec = eh->elf.root.u.def.section;
6989 opd = get_opd_info (sym_sec);
6990 if (opd != NULL && opd->adjust != NULL)
6992 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6995 /* This entry has been deleted. */
6996 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6999 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7000 if (discarded_section (dsec))
7002 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7006 eh->elf.root.u.def.value = 0;
7007 eh->elf.root.u.def.section = dsec;
7010 eh->elf.root.u.def.value += adjust;
7011 eh->adjust_done = 1;
7016 /* Handles decrementing dynamic reloc counts for the reloc specified by
7017 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7018 have already been determined. */
7021 dec_dynrel_count (bfd_vma r_info,
7023 struct bfd_link_info *info,
7024 Elf_Internal_Sym **local_syms,
7025 struct elf_link_hash_entry *h,
7026 Elf_Internal_Sym *sym)
7028 enum elf_ppc64_reloc_type r_type;
7029 asection *sym_sec = NULL;
7031 /* Can this reloc be dynamic? This switch, and later tests here
7032 should be kept in sync with the code in check_relocs. */
7033 r_type = ELF64_R_TYPE (r_info);
7039 case R_PPC64_TPREL16:
7040 case R_PPC64_TPREL16_LO:
7041 case R_PPC64_TPREL16_HI:
7042 case R_PPC64_TPREL16_HA:
7043 case R_PPC64_TPREL16_DS:
7044 case R_PPC64_TPREL16_LO_DS:
7045 case R_PPC64_TPREL16_HIGHER:
7046 case R_PPC64_TPREL16_HIGHERA:
7047 case R_PPC64_TPREL16_HIGHEST:
7048 case R_PPC64_TPREL16_HIGHESTA:
7052 case R_PPC64_TPREL64:
7053 case R_PPC64_DTPMOD64:
7054 case R_PPC64_DTPREL64:
7055 case R_PPC64_ADDR64:
7059 case R_PPC64_ADDR14:
7060 case R_PPC64_ADDR14_BRNTAKEN:
7061 case R_PPC64_ADDR14_BRTAKEN:
7062 case R_PPC64_ADDR16:
7063 case R_PPC64_ADDR16_DS:
7064 case R_PPC64_ADDR16_HA:
7065 case R_PPC64_ADDR16_HI:
7066 case R_PPC64_ADDR16_HIGHER:
7067 case R_PPC64_ADDR16_HIGHERA:
7068 case R_PPC64_ADDR16_HIGHEST:
7069 case R_PPC64_ADDR16_HIGHESTA:
7070 case R_PPC64_ADDR16_LO:
7071 case R_PPC64_ADDR16_LO_DS:
7072 case R_PPC64_ADDR24:
7073 case R_PPC64_ADDR32:
7074 case R_PPC64_UADDR16:
7075 case R_PPC64_UADDR32:
7076 case R_PPC64_UADDR64:
7081 if (local_syms != NULL)
7083 unsigned long r_symndx;
7084 bfd *ibfd = sec->owner;
7086 r_symndx = ELF64_R_SYM (r_info);
7087 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7092 && (must_be_dyn_reloc (info, r_type)
7094 && (!SYMBOLIC_BIND (info, h)
7095 || h->root.type == bfd_link_hash_defweak
7096 || !h->def_regular))))
7097 || (ELIMINATE_COPY_RELOCS
7100 && (h->root.type == bfd_link_hash_defweak
7101 || !h->def_regular)))
7108 struct elf_dyn_relocs *p;
7109 struct elf_dyn_relocs **pp;
7110 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7112 /* elf_gc_sweep may have already removed all dyn relocs associated
7113 with local syms for a given section. Also, symbol flags are
7114 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7115 report a dynreloc miscount. */
7116 if (*pp == NULL && info->gc_sections)
7119 while ((p = *pp) != NULL)
7123 if (!must_be_dyn_reloc (info, r_type))
7135 struct ppc_dyn_relocs *p;
7136 struct ppc_dyn_relocs **pp;
7138 bfd_boolean is_ifunc;
7140 if (local_syms == NULL)
7141 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7142 if (sym_sec == NULL)
7145 vpp = &elf_section_data (sym_sec)->local_dynrel;
7146 pp = (struct ppc_dyn_relocs **) vpp;
7148 if (*pp == NULL && info->gc_sections)
7151 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7152 while ((p = *pp) != NULL)
7154 if (p->sec == sec && p->ifunc == is_ifunc)
7165 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7167 bfd_set_error (bfd_error_bad_value);
7171 /* Remove unused Official Procedure Descriptor entries. Currently we
7172 only remove those associated with functions in discarded link-once
7173 sections, or weakly defined functions that have been overridden. It
7174 would be possible to remove many more entries for statically linked
7178 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7181 bfd_boolean some_edited = FALSE;
7182 asection *need_pad = NULL;
7184 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7187 Elf_Internal_Rela *relstart, *rel, *relend;
7188 Elf_Internal_Shdr *symtab_hdr;
7189 Elf_Internal_Sym *local_syms;
7191 struct _opd_sec_data *opd;
7192 bfd_boolean need_edit, add_aux_fields;
7193 bfd_size_type cnt_16b = 0;
7195 if (!is_ppc64_elf (ibfd))
7198 sec = bfd_get_section_by_name (ibfd, ".opd");
7199 if (sec == NULL || sec->size == 0)
7202 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7205 if (sec->output_section == bfd_abs_section_ptr)
7208 /* Look through the section relocs. */
7209 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7213 symtab_hdr = &elf_symtab_hdr (ibfd);
7215 /* Read the relocations. */
7216 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7218 if (relstart == NULL)
7221 /* First run through the relocs to check they are sane, and to
7222 determine whether we need to edit this opd section. */
7226 relend = relstart + sec->reloc_count;
7227 for (rel = relstart; rel < relend; )
7229 enum elf_ppc64_reloc_type r_type;
7230 unsigned long r_symndx;
7232 struct elf_link_hash_entry *h;
7233 Elf_Internal_Sym *sym;
7235 /* .opd contains a regular array of 16 or 24 byte entries. We're
7236 only interested in the reloc pointing to a function entry
7238 if (rel->r_offset != offset
7239 || rel + 1 >= relend
7240 || (rel + 1)->r_offset != offset + 8)
7242 /* If someone messes with .opd alignment then after a
7243 "ld -r" we might have padding in the middle of .opd.
7244 Also, there's nothing to prevent someone putting
7245 something silly in .opd with the assembler. No .opd
7246 optimization for them! */
7248 (*_bfd_error_handler)
7249 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7254 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7255 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7257 (*_bfd_error_handler)
7258 (_("%B: unexpected reloc type %u in .opd section"),
7264 r_symndx = ELF64_R_SYM (rel->r_info);
7265 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7269 if (sym_sec == NULL || sym_sec->owner == NULL)
7271 const char *sym_name;
7273 sym_name = h->root.root.string;
7275 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7278 (*_bfd_error_handler)
7279 (_("%B: undefined sym `%s' in .opd section"),
7285 /* opd entries are always for functions defined in the
7286 current input bfd. If the symbol isn't defined in the
7287 input bfd, then we won't be using the function in this
7288 bfd; It must be defined in a linkonce section in another
7289 bfd, or is weak. It's also possible that we are
7290 discarding the function due to a linker script /DISCARD/,
7291 which we test for via the output_section. */
7292 if (sym_sec->owner != ibfd
7293 || sym_sec->output_section == bfd_abs_section_ptr)
7298 || (rel + 1 == relend && rel->r_offset == offset + 16))
7300 if (sec->size == offset + 24)
7305 if (rel == relend && sec->size == offset + 16)
7313 if (rel->r_offset == offset + 24)
7315 else if (rel->r_offset != offset + 16)
7317 else if (rel + 1 < relend
7318 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7319 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7324 else if (rel + 2 < relend
7325 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7326 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7335 add_aux_fields = non_overlapping && cnt_16b > 0;
7337 if (need_edit || add_aux_fields)
7339 Elf_Internal_Rela *write_rel;
7340 Elf_Internal_Shdr *rel_hdr;
7341 bfd_byte *rptr, *wptr;
7342 bfd_byte *new_contents;
7347 new_contents = NULL;
7348 amt = sec->size * sizeof (long) / 8;
7349 opd = &ppc64_elf_section_data (sec)->u.opd;
7350 opd->adjust = bfd_zalloc (sec->owner, amt);
7351 if (opd->adjust == NULL)
7353 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7355 /* This seems a waste of time as input .opd sections are all
7356 zeros as generated by gcc, but I suppose there's no reason
7357 this will always be so. We might start putting something in
7358 the third word of .opd entries. */
7359 if ((sec->flags & SEC_IN_MEMORY) == 0)
7362 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7367 if (local_syms != NULL
7368 && symtab_hdr->contents != (unsigned char *) local_syms)
7370 if (elf_section_data (sec)->relocs != relstart)
7374 sec->contents = loc;
7375 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7378 elf_section_data (sec)->relocs = relstart;
7380 new_contents = sec->contents;
7383 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7384 if (new_contents == NULL)
7388 wptr = new_contents;
7389 rptr = sec->contents;
7391 write_rel = relstart;
7395 for (rel = relstart; rel < relend; rel++)
7397 unsigned long r_symndx;
7399 struct elf_link_hash_entry *h;
7400 Elf_Internal_Sym *sym;
7402 r_symndx = ELF64_R_SYM (rel->r_info);
7403 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7407 if (rel->r_offset == offset)
7409 struct ppc_link_hash_entry *fdh = NULL;
7411 /* See if the .opd entry is full 24 byte or
7412 16 byte (with fd_aux entry overlapped with next
7415 if ((rel + 2 == relend && sec->size == offset + 16)
7416 || (rel + 3 < relend
7417 && rel[2].r_offset == offset + 16
7418 && rel[3].r_offset == offset + 24
7419 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7420 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7424 && h->root.root.string[0] == '.')
7426 struct ppc_link_hash_table *htab;
7428 htab = ppc_hash_table (info);
7430 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7433 && fdh->elf.root.type != bfd_link_hash_defined
7434 && fdh->elf.root.type != bfd_link_hash_defweak)
7438 skip = (sym_sec->owner != ibfd
7439 || sym_sec->output_section == bfd_abs_section_ptr);
7442 if (fdh != NULL && sym_sec->owner == ibfd)
7444 /* Arrange for the function descriptor sym
7446 fdh->elf.root.u.def.value = 0;
7447 fdh->elf.root.u.def.section = sym_sec;
7449 opd->adjust[rel->r_offset / 8] = -1;
7453 /* We'll be keeping this opd entry. */
7457 /* Redefine the function descriptor symbol to
7458 this location in the opd section. It is
7459 necessary to update the value here rather
7460 than using an array of adjustments as we do
7461 for local symbols, because various places
7462 in the generic ELF code use the value
7463 stored in u.def.value. */
7464 fdh->elf.root.u.def.value = wptr - new_contents;
7465 fdh->adjust_done = 1;
7468 /* Local syms are a bit tricky. We could
7469 tweak them as they can be cached, but
7470 we'd need to look through the local syms
7471 for the function descriptor sym which we
7472 don't have at the moment. So keep an
7473 array of adjustments. */
7474 opd->adjust[rel->r_offset / 8]
7475 = (wptr - new_contents) - (rptr - sec->contents);
7478 memcpy (wptr, rptr, opd_ent_size);
7479 wptr += opd_ent_size;
7480 if (add_aux_fields && opd_ent_size == 16)
7482 memset (wptr, '\0', 8);
7486 rptr += opd_ent_size;
7487 offset += opd_ent_size;
7493 && !info->relocatable
7494 && !dec_dynrel_count (rel->r_info, sec, info,
7500 /* We need to adjust any reloc offsets to point to the
7501 new opd entries. While we're at it, we may as well
7502 remove redundant relocs. */
7503 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7504 if (write_rel != rel)
7505 memcpy (write_rel, rel, sizeof (*rel));
7510 sec->size = wptr - new_contents;
7511 sec->reloc_count = write_rel - relstart;
7514 free (sec->contents);
7515 sec->contents = new_contents;
7518 /* Fudge the header size too, as this is used later in
7519 elf_bfd_final_link if we are emitting relocs. */
7520 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7521 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7524 else if (elf_section_data (sec)->relocs != relstart)
7527 if (local_syms != NULL
7528 && symtab_hdr->contents != (unsigned char *) local_syms)
7530 if (!info->keep_memory)
7533 symtab_hdr->contents = (unsigned char *) local_syms;
7538 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7540 /* If we are doing a final link and the last .opd entry is just 16 byte
7541 long, add a 8 byte padding after it. */
7542 if (need_pad != NULL && !info->relocatable)
7546 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7548 BFD_ASSERT (need_pad->size > 0);
7550 p = bfd_malloc (need_pad->size + 8);
7554 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7555 p, 0, need_pad->size))
7558 need_pad->contents = p;
7559 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7563 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7567 need_pad->contents = p;
7570 memset (need_pad->contents + need_pad->size, 0, 8);
7571 need_pad->size += 8;
7577 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7580 ppc64_elf_tls_setup (struct bfd_link_info *info,
7581 int no_tls_get_addr_opt,
7584 struct ppc_link_hash_table *htab;
7586 htab = ppc_hash_table (info);
7591 htab->do_multi_toc = 0;
7592 else if (!htab->do_multi_toc)
7595 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7596 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7597 FALSE, FALSE, TRUE));
7598 /* Move dynamic linking info to the function descriptor sym. */
7599 if (htab->tls_get_addr != NULL)
7600 func_desc_adjust (&htab->tls_get_addr->elf, info);
7601 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7602 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7603 FALSE, FALSE, TRUE));
7604 if (!no_tls_get_addr_opt)
7606 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7608 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7609 FALSE, FALSE, TRUE);
7611 func_desc_adjust (opt, info);
7612 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7613 FALSE, FALSE, TRUE);
7615 && (opt_fd->root.type == bfd_link_hash_defined
7616 || opt_fd->root.type == bfd_link_hash_defweak))
7618 /* If glibc supports an optimized __tls_get_addr call stub,
7619 signalled by the presence of __tls_get_addr_opt, and we'll
7620 be calling __tls_get_addr via a plt call stub, then
7621 make __tls_get_addr point to __tls_get_addr_opt. */
7622 tga_fd = &htab->tls_get_addr_fd->elf;
7623 if (htab->elf.dynamic_sections_created
7625 && (tga_fd->type == STT_FUNC
7626 || tga_fd->needs_plt)
7627 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7628 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7629 && tga_fd->root.type == bfd_link_hash_undefweak)))
7631 struct plt_entry *ent;
7633 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7634 if (ent->plt.refcount > 0)
7638 tga_fd->root.type = bfd_link_hash_indirect;
7639 tga_fd->root.u.i.link = &opt_fd->root;
7640 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7641 if (opt_fd->dynindx != -1)
7643 /* Use __tls_get_addr_opt in dynamic relocations. */
7644 opt_fd->dynindx = -1;
7645 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7646 opt_fd->dynstr_index);
7647 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7650 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7651 tga = &htab->tls_get_addr->elf;
7652 if (opt != NULL && tga != NULL)
7654 tga->root.type = bfd_link_hash_indirect;
7655 tga->root.u.i.link = &opt->root;
7656 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7657 _bfd_elf_link_hash_hide_symbol (info, opt,
7659 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7661 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7662 htab->tls_get_addr_fd->is_func_descriptor = 1;
7663 if (htab->tls_get_addr != NULL)
7665 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7666 htab->tls_get_addr->is_func = 1;
7672 no_tls_get_addr_opt = TRUE;
7674 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7675 return _bfd_elf_tls_setup (info->output_bfd, info);
7678 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7682 branch_reloc_hash_match (const bfd *ibfd,
7683 const Elf_Internal_Rela *rel,
7684 const struct ppc_link_hash_entry *hash1,
7685 const struct ppc_link_hash_entry *hash2)
7687 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7688 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7689 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7691 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7693 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7694 struct elf_link_hash_entry *h;
7696 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7697 h = elf_follow_link (h);
7698 if (h == &hash1->elf || h == &hash2->elf)
7704 /* Run through all the TLS relocs looking for optimization
7705 opportunities. The linker has been hacked (see ppc64elf.em) to do
7706 a preliminary section layout so that we know the TLS segment
7707 offsets. We can't optimize earlier because some optimizations need
7708 to know the tp offset, and we need to optimize before allocating
7709 dynamic relocations. */
7712 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7716 struct ppc_link_hash_table *htab;
7717 unsigned char *toc_ref;
7720 if (info->relocatable || !info->executable)
7723 htab = ppc_hash_table (info);
7727 /* Make two passes over the relocs. On the first pass, mark toc
7728 entries involved with tls relocs, and check that tls relocs
7729 involved in setting up a tls_get_addr call are indeed followed by
7730 such a call. If they are not, we can't do any tls optimization.
7731 On the second pass twiddle tls_mask flags to notify
7732 relocate_section that optimization can be done, and adjust got
7733 and plt refcounts. */
7735 for (pass = 0; pass < 2; ++pass)
7736 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7738 Elf_Internal_Sym *locsyms = NULL;
7739 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7741 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7742 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7744 Elf_Internal_Rela *relstart, *rel, *relend;
7745 bfd_boolean found_tls_get_addr_arg = 0;
7747 /* Read the relocations. */
7748 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7750 if (relstart == NULL)
7753 relend = relstart + sec->reloc_count;
7754 for (rel = relstart; rel < relend; rel++)
7756 enum elf_ppc64_reloc_type r_type;
7757 unsigned long r_symndx;
7758 struct elf_link_hash_entry *h;
7759 Elf_Internal_Sym *sym;
7761 unsigned char *tls_mask;
7762 unsigned char tls_set, tls_clear, tls_type = 0;
7764 bfd_boolean ok_tprel, is_local;
7765 long toc_ref_index = 0;
7766 int expecting_tls_get_addr = 0;
7767 bfd_boolean ret = FALSE;
7769 r_symndx = ELF64_R_SYM (rel->r_info);
7770 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7774 if (elf_section_data (sec)->relocs != relstart)
7776 if (toc_ref != NULL)
7779 && (elf_symtab_hdr (ibfd).contents
7780 != (unsigned char *) locsyms))
7787 if (h->root.type == bfd_link_hash_defined
7788 || h->root.type == bfd_link_hash_defweak)
7789 value = h->root.u.def.value;
7790 else if (h->root.type == bfd_link_hash_undefweak)
7794 found_tls_get_addr_arg = 0;
7799 /* Symbols referenced by TLS relocs must be of type
7800 STT_TLS. So no need for .opd local sym adjust. */
7801 value = sym->st_value;
7810 && h->root.type == bfd_link_hash_undefweak)
7814 value += sym_sec->output_offset;
7815 value += sym_sec->output_section->vma;
7816 value -= htab->elf.tls_sec->vma;
7817 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7818 < (bfd_vma) 1 << 32);
7822 r_type = ELF64_R_TYPE (rel->r_info);
7823 /* If this section has old-style __tls_get_addr calls
7824 without marker relocs, then check that each
7825 __tls_get_addr call reloc is preceded by a reloc
7826 that conceivably belongs to the __tls_get_addr arg
7827 setup insn. If we don't find matching arg setup
7828 relocs, don't do any tls optimization. */
7830 && sec->has_tls_get_addr_call
7832 && (h == &htab->tls_get_addr->elf
7833 || h == &htab->tls_get_addr_fd->elf)
7834 && !found_tls_get_addr_arg
7835 && is_branch_reloc (r_type))
7837 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
7838 "TLS optimization disabled\n"),
7839 ibfd, sec, rel->r_offset);
7844 found_tls_get_addr_arg = 0;
7847 case R_PPC64_GOT_TLSLD16:
7848 case R_PPC64_GOT_TLSLD16_LO:
7849 expecting_tls_get_addr = 1;
7850 found_tls_get_addr_arg = 1;
7853 case R_PPC64_GOT_TLSLD16_HI:
7854 case R_PPC64_GOT_TLSLD16_HA:
7855 /* These relocs should never be against a symbol
7856 defined in a shared lib. Leave them alone if
7857 that turns out to be the case. */
7864 tls_type = TLS_TLS | TLS_LD;
7867 case R_PPC64_GOT_TLSGD16:
7868 case R_PPC64_GOT_TLSGD16_LO:
7869 expecting_tls_get_addr = 1;
7870 found_tls_get_addr_arg = 1;
7873 case R_PPC64_GOT_TLSGD16_HI:
7874 case R_PPC64_GOT_TLSGD16_HA:
7880 tls_set = TLS_TLS | TLS_TPRELGD;
7882 tls_type = TLS_TLS | TLS_GD;
7885 case R_PPC64_GOT_TPREL16_DS:
7886 case R_PPC64_GOT_TPREL16_LO_DS:
7887 case R_PPC64_GOT_TPREL16_HI:
7888 case R_PPC64_GOT_TPREL16_HA:
7893 tls_clear = TLS_TPREL;
7894 tls_type = TLS_TLS | TLS_TPREL;
7901 found_tls_get_addr_arg = 1;
7906 case R_PPC64_TOC16_LO:
7907 if (sym_sec == NULL || sym_sec != toc)
7910 /* Mark this toc entry as referenced by a TLS
7911 code sequence. We can do that now in the
7912 case of R_PPC64_TLS, and after checking for
7913 tls_get_addr for the TOC16 relocs. */
7914 if (toc_ref == NULL)
7915 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7916 if (toc_ref == NULL)
7920 value = h->root.u.def.value;
7922 value = sym->st_value;
7923 value += rel->r_addend;
7924 BFD_ASSERT (value < toc->size && value % 8 == 0);
7925 toc_ref_index = (value + toc->output_offset) / 8;
7926 if (r_type == R_PPC64_TLS
7927 || r_type == R_PPC64_TLSGD
7928 || r_type == R_PPC64_TLSLD)
7930 toc_ref[toc_ref_index] = 1;
7934 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7939 expecting_tls_get_addr = 2;
7942 case R_PPC64_TPREL64:
7946 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7951 tls_set = TLS_EXPLICIT;
7952 tls_clear = TLS_TPREL;
7957 case R_PPC64_DTPMOD64:
7961 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7963 if (rel + 1 < relend
7965 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7966 && rel[1].r_offset == rel->r_offset + 8)
7970 tls_set = TLS_EXPLICIT | TLS_GD;
7973 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7982 tls_set = TLS_EXPLICIT;
7993 if (!expecting_tls_get_addr
7994 || !sec->has_tls_get_addr_call)
7997 if (rel + 1 < relend
7998 && branch_reloc_hash_match (ibfd, rel + 1,
8000 htab->tls_get_addr_fd))
8002 if (expecting_tls_get_addr == 2)
8004 /* Check for toc tls entries. */
8005 unsigned char *toc_tls;
8008 retval = get_tls_mask (&toc_tls, NULL, NULL,
8013 if (toc_tls != NULL)
8015 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8016 found_tls_get_addr_arg = 1;
8018 toc_ref[toc_ref_index] = 1;
8024 if (expecting_tls_get_addr != 1)
8027 /* Uh oh, we didn't find the expected call. We
8028 could just mark this symbol to exclude it
8029 from tls optimization but it's safer to skip
8030 the entire optimization. */
8031 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8032 "TLS optimization disabled\n"),
8033 ibfd, sec, rel->r_offset);
8038 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8040 struct plt_entry *ent;
8041 for (ent = htab->tls_get_addr->elf.plt.plist;
8044 if (ent->addend == 0)
8046 if (ent->plt.refcount > 0)
8048 ent->plt.refcount -= 1;
8049 expecting_tls_get_addr = 0;
8055 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8057 struct plt_entry *ent;
8058 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8061 if (ent->addend == 0)
8063 if (ent->plt.refcount > 0)
8064 ent->plt.refcount -= 1;
8072 if ((tls_set & TLS_EXPLICIT) == 0)
8074 struct got_entry *ent;
8076 /* Adjust got entry for this reloc. */
8080 ent = elf_local_got_ents (ibfd)[r_symndx];
8082 for (; ent != NULL; ent = ent->next)
8083 if (ent->addend == rel->r_addend
8084 && ent->owner == ibfd
8085 && ent->tls_type == tls_type)
8092 /* We managed to get rid of a got entry. */
8093 if (ent->got.refcount > 0)
8094 ent->got.refcount -= 1;
8099 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8100 we'll lose one or two dyn relocs. */
8101 if (!dec_dynrel_count (rel->r_info, sec, info,
8105 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8107 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8113 *tls_mask |= tls_set;
8114 *tls_mask &= ~tls_clear;
8117 if (elf_section_data (sec)->relocs != relstart)
8122 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8124 if (!info->keep_memory)
8127 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8131 if (toc_ref != NULL)
8136 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8137 the values of any global symbols in a toc section that has been
8138 edited. Globals in toc sections should be a rarity, so this function
8139 sets a flag if any are found in toc sections other than the one just
8140 edited, so that futher hash table traversals can be avoided. */
8142 struct adjust_toc_info
8145 unsigned long *skip;
8146 bfd_boolean global_toc_syms;
8149 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8152 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8154 struct ppc_link_hash_entry *eh;
8155 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8158 if (h->root.type != bfd_link_hash_defined
8159 && h->root.type != bfd_link_hash_defweak)
8162 eh = (struct ppc_link_hash_entry *) h;
8163 if (eh->adjust_done)
8166 if (eh->elf.root.u.def.section == toc_inf->toc)
8168 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8169 i = toc_inf->toc->rawsize >> 3;
8171 i = eh->elf.root.u.def.value >> 3;
8173 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8175 (*_bfd_error_handler)
8176 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8179 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8180 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8183 eh->elf.root.u.def.value -= toc_inf->skip[i];
8184 eh->adjust_done = 1;
8186 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8187 toc_inf->global_toc_syms = TRUE;
8192 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8195 ok_lo_toc_insn (unsigned int insn)
8197 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8198 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8199 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8200 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8201 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8202 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8203 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8204 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8205 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8206 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8207 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8208 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8209 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8210 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8211 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8213 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8214 && ((insn & 3) == 0 || (insn & 3) == 3))
8215 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8218 /* Examine all relocs referencing .toc sections in order to remove
8219 unused .toc entries. */
8222 ppc64_elf_edit_toc (struct bfd_link_info *info)
8225 struct adjust_toc_info toc_inf;
8226 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8228 htab->do_toc_opt = 1;
8229 toc_inf.global_toc_syms = TRUE;
8230 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8232 asection *toc, *sec;
8233 Elf_Internal_Shdr *symtab_hdr;
8234 Elf_Internal_Sym *local_syms;
8235 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8236 unsigned long *skip, *drop;
8237 unsigned char *used;
8238 unsigned char *keep, last, some_unused;
8240 if (!is_ppc64_elf (ibfd))
8243 toc = bfd_get_section_by_name (ibfd, ".toc");
8246 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8247 || discarded_section (toc))
8252 symtab_hdr = &elf_symtab_hdr (ibfd);
8254 /* Look at sections dropped from the final link. */
8257 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8259 if (sec->reloc_count == 0
8260 || !discarded_section (sec)
8261 || get_opd_info (sec)
8262 || (sec->flags & SEC_ALLOC) == 0
8263 || (sec->flags & SEC_DEBUGGING) != 0)
8266 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8267 if (relstart == NULL)
8270 /* Run through the relocs to see which toc entries might be
8272 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8274 enum elf_ppc64_reloc_type r_type;
8275 unsigned long r_symndx;
8277 struct elf_link_hash_entry *h;
8278 Elf_Internal_Sym *sym;
8281 r_type = ELF64_R_TYPE (rel->r_info);
8288 case R_PPC64_TOC16_LO:
8289 case R_PPC64_TOC16_HI:
8290 case R_PPC64_TOC16_HA:
8291 case R_PPC64_TOC16_DS:
8292 case R_PPC64_TOC16_LO_DS:
8296 r_symndx = ELF64_R_SYM (rel->r_info);
8297 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8305 val = h->root.u.def.value;
8307 val = sym->st_value;
8308 val += rel->r_addend;
8310 if (val >= toc->size)
8313 /* Anything in the toc ought to be aligned to 8 bytes.
8314 If not, don't mark as unused. */
8320 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8325 skip[val >> 3] = ref_from_discarded;
8328 if (elf_section_data (sec)->relocs != relstart)
8332 /* For largetoc loads of address constants, we can convert
8333 . addis rx,2,addr@got@ha
8334 . ld ry,addr@got@l(rx)
8336 . addis rx,2,addr@toc@ha
8337 . addi ry,rx,addr@toc@l
8338 when addr is within 2G of the toc pointer. This then means
8339 that the word storing "addr" in the toc is no longer needed. */
8341 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8342 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8343 && toc->reloc_count != 0)
8345 /* Read toc relocs. */
8346 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8348 if (toc_relocs == NULL)
8351 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8353 enum elf_ppc64_reloc_type r_type;
8354 unsigned long r_symndx;
8356 struct elf_link_hash_entry *h;
8357 Elf_Internal_Sym *sym;
8360 r_type = ELF64_R_TYPE (rel->r_info);
8361 if (r_type != R_PPC64_ADDR64)
8364 r_symndx = ELF64_R_SYM (rel->r_info);
8365 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8370 || discarded_section (sym_sec))
8373 if (!SYMBOL_CALLS_LOCAL (info, h))
8378 if (h->type == STT_GNU_IFUNC)
8380 val = h->root.u.def.value;
8384 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8386 val = sym->st_value;
8388 val += rel->r_addend;
8389 val += sym_sec->output_section->vma + sym_sec->output_offset;
8391 /* We don't yet know the exact toc pointer value, but we
8392 know it will be somewhere in the toc section. Don't
8393 optimize if the difference from any possible toc
8394 pointer is outside [ff..f80008000, 7fff7fff]. */
8395 addr = toc->output_section->vma + TOC_BASE_OFF;
8396 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8399 addr = toc->output_section->vma + toc->output_section->rawsize;
8400 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8405 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8410 skip[rel->r_offset >> 3]
8411 |= can_optimize | ((rel - toc_relocs) << 2);
8418 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8422 if (local_syms != NULL
8423 && symtab_hdr->contents != (unsigned char *) local_syms)
8427 && elf_section_data (sec)->relocs != relstart)
8429 if (toc_relocs != NULL
8430 && elf_section_data (toc)->relocs != toc_relocs)
8437 /* Now check all kept sections that might reference the toc.
8438 Check the toc itself last. */
8439 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8442 sec = (sec == toc ? NULL
8443 : sec->next == NULL ? toc
8444 : sec->next == toc && toc->next ? toc->next
8449 if (sec->reloc_count == 0
8450 || discarded_section (sec)
8451 || get_opd_info (sec)
8452 || (sec->flags & SEC_ALLOC) == 0
8453 || (sec->flags & SEC_DEBUGGING) != 0)
8456 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8458 if (relstart == NULL)
8461 /* Mark toc entries referenced as used. */
8465 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8467 enum elf_ppc64_reloc_type r_type;
8468 unsigned long r_symndx;
8470 struct elf_link_hash_entry *h;
8471 Elf_Internal_Sym *sym;
8473 enum {no_check, check_lo, check_ha} insn_check;
8475 r_type = ELF64_R_TYPE (rel->r_info);
8479 insn_check = no_check;
8482 case R_PPC64_GOT_TLSLD16_HA:
8483 case R_PPC64_GOT_TLSGD16_HA:
8484 case R_PPC64_GOT_TPREL16_HA:
8485 case R_PPC64_GOT_DTPREL16_HA:
8486 case R_PPC64_GOT16_HA:
8487 case R_PPC64_TOC16_HA:
8488 insn_check = check_ha;
8491 case R_PPC64_GOT_TLSLD16_LO:
8492 case R_PPC64_GOT_TLSGD16_LO:
8493 case R_PPC64_GOT_TPREL16_LO_DS:
8494 case R_PPC64_GOT_DTPREL16_LO_DS:
8495 case R_PPC64_GOT16_LO:
8496 case R_PPC64_GOT16_LO_DS:
8497 case R_PPC64_TOC16_LO:
8498 case R_PPC64_TOC16_LO_DS:
8499 insn_check = check_lo;
8503 if (insn_check != no_check)
8505 bfd_vma off = rel->r_offset & ~3;
8506 unsigned char buf[4];
8509 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8514 insn = bfd_get_32 (ibfd, buf);
8515 if (insn_check == check_lo
8516 ? !ok_lo_toc_insn (insn)
8517 : ((insn & ((0x3f << 26) | 0x1f << 16))
8518 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8522 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8523 sprintf (str, "%#08x", insn);
8524 info->callbacks->einfo
8525 (_("%P: %H: toc optimization is not supported for"
8526 " %s instruction.\n"),
8527 ibfd, sec, rel->r_offset & ~3, str);
8534 case R_PPC64_TOC16_LO:
8535 case R_PPC64_TOC16_HI:
8536 case R_PPC64_TOC16_HA:
8537 case R_PPC64_TOC16_DS:
8538 case R_PPC64_TOC16_LO_DS:
8539 /* In case we're taking addresses of toc entries. */
8540 case R_PPC64_ADDR64:
8547 r_symndx = ELF64_R_SYM (rel->r_info);
8548 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8559 val = h->root.u.def.value;
8561 val = sym->st_value;
8562 val += rel->r_addend;
8564 if (val >= toc->size)
8567 if ((skip[val >> 3] & can_optimize) != 0)
8574 case R_PPC64_TOC16_HA:
8577 case R_PPC64_TOC16_LO_DS:
8578 off = rel->r_offset;
8579 off += (bfd_big_endian (ibfd) ? -2 : 3);
8580 if (!bfd_get_section_contents (ibfd, sec, &opc,
8586 if ((opc & (0x3f << 2)) == (58u << 2))
8591 /* Wrong sort of reloc, or not a ld. We may
8592 as well clear ref_from_discarded too. */
8599 /* For the toc section, we only mark as used if this
8600 entry itself isn't unused. */
8601 else if ((used[rel->r_offset >> 3]
8602 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
8605 /* Do all the relocs again, to catch reference
8614 if (elf_section_data (sec)->relocs != relstart)
8618 /* Merge the used and skip arrays. Assume that TOC
8619 doublewords not appearing as either used or unused belong
8620 to to an entry more than one doubleword in size. */
8621 for (drop = skip, keep = used, last = 0, some_unused = 0;
8622 drop < skip + (toc->size + 7) / 8;
8627 *drop &= ~ref_from_discarded;
8628 if ((*drop & can_optimize) != 0)
8632 else if ((*drop & ref_from_discarded) != 0)
8635 last = ref_from_discarded;
8645 bfd_byte *contents, *src;
8647 Elf_Internal_Sym *sym;
8648 bfd_boolean local_toc_syms = FALSE;
8650 /* Shuffle the toc contents, and at the same time convert the
8651 skip array from booleans into offsets. */
8652 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8655 elf_section_data (toc)->this_hdr.contents = contents;
8657 for (src = contents, off = 0, drop = skip;
8658 src < contents + toc->size;
8661 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8666 memcpy (src - off, src, 8);
8670 toc->rawsize = toc->size;
8671 toc->size = src - contents - off;
8673 /* Adjust addends for relocs against the toc section sym,
8674 and optimize any accesses we can. */
8675 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8677 if (sec->reloc_count == 0
8678 || discarded_section (sec))
8681 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8683 if (relstart == NULL)
8686 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8688 enum elf_ppc64_reloc_type r_type;
8689 unsigned long r_symndx;
8691 struct elf_link_hash_entry *h;
8694 r_type = ELF64_R_TYPE (rel->r_info);
8701 case R_PPC64_TOC16_LO:
8702 case R_PPC64_TOC16_HI:
8703 case R_PPC64_TOC16_HA:
8704 case R_PPC64_TOC16_DS:
8705 case R_PPC64_TOC16_LO_DS:
8706 case R_PPC64_ADDR64:
8710 r_symndx = ELF64_R_SYM (rel->r_info);
8711 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8719 val = h->root.u.def.value;
8722 val = sym->st_value;
8724 local_toc_syms = TRUE;
8727 val += rel->r_addend;
8729 if (val > toc->rawsize)
8731 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8733 else if ((skip[val >> 3] & can_optimize) != 0)
8735 Elf_Internal_Rela *tocrel
8736 = toc_relocs + (skip[val >> 3] >> 2);
8737 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8741 case R_PPC64_TOC16_HA:
8742 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8745 case R_PPC64_TOC16_LO_DS:
8746 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8750 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8752 info->callbacks->einfo
8753 (_("%P: %H: %s references "
8754 "optimized away TOC entry\n"),
8755 ibfd, sec, rel->r_offset,
8756 ppc64_elf_howto_table[r_type]->name);
8757 bfd_set_error (bfd_error_bad_value);
8760 rel->r_addend = tocrel->r_addend;
8761 elf_section_data (sec)->relocs = relstart;
8765 if (h != NULL || sym->st_value != 0)
8768 rel->r_addend -= skip[val >> 3];
8769 elf_section_data (sec)->relocs = relstart;
8772 if (elf_section_data (sec)->relocs != relstart)
8776 /* We shouldn't have local or global symbols defined in the TOC,
8777 but handle them anyway. */
8778 if (local_syms != NULL)
8779 for (sym = local_syms;
8780 sym < local_syms + symtab_hdr->sh_info;
8782 if (sym->st_value != 0
8783 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8787 if (sym->st_value > toc->rawsize)
8788 i = toc->rawsize >> 3;
8790 i = sym->st_value >> 3;
8792 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8795 (*_bfd_error_handler)
8796 (_("%s defined on removed toc entry"),
8797 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8800 while ((skip[i] & (ref_from_discarded | can_optimize)));
8801 sym->st_value = (bfd_vma) i << 3;
8804 sym->st_value -= skip[i];
8805 symtab_hdr->contents = (unsigned char *) local_syms;
8808 /* Adjust any global syms defined in this toc input section. */
8809 if (toc_inf.global_toc_syms)
8812 toc_inf.skip = skip;
8813 toc_inf.global_toc_syms = FALSE;
8814 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8818 if (toc->reloc_count != 0)
8820 Elf_Internal_Shdr *rel_hdr;
8821 Elf_Internal_Rela *wrel;
8824 /* Remove unused toc relocs, and adjust those we keep. */
8825 if (toc_relocs == NULL)
8826 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8828 if (toc_relocs == NULL)
8832 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8833 if ((skip[rel->r_offset >> 3]
8834 & (ref_from_discarded | can_optimize)) == 0)
8836 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8837 wrel->r_info = rel->r_info;
8838 wrel->r_addend = rel->r_addend;
8841 else if (!dec_dynrel_count (rel->r_info, toc, info,
8842 &local_syms, NULL, NULL))
8845 elf_section_data (toc)->relocs = toc_relocs;
8846 toc->reloc_count = wrel - toc_relocs;
8847 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8848 sz = rel_hdr->sh_entsize;
8849 rel_hdr->sh_size = toc->reloc_count * sz;
8852 else if (toc_relocs != NULL
8853 && elf_section_data (toc)->relocs != toc_relocs)
8856 if (local_syms != NULL
8857 && symtab_hdr->contents != (unsigned char *) local_syms)
8859 if (!info->keep_memory)
8862 symtab_hdr->contents = (unsigned char *) local_syms;
8870 /* Return true iff input section I references the TOC using
8871 instructions limited to +/-32k offsets. */
8874 ppc64_elf_has_small_toc_reloc (asection *i)
8876 return (is_ppc64_elf (i->owner)
8877 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8880 /* Allocate space for one GOT entry. */
8883 allocate_got (struct elf_link_hash_entry *h,
8884 struct bfd_link_info *info,
8885 struct got_entry *gent)
8887 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8889 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8890 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8892 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8893 ? 2 : 1) * sizeof (Elf64_External_Rela);
8894 asection *got = ppc64_elf_tdata (gent->owner)->got;
8896 gent->got.offset = got->size;
8897 got->size += entsize;
8899 dyn = htab->elf.dynamic_sections_created;
8900 if (h->type == STT_GNU_IFUNC)
8902 htab->reliplt->size += rentsize;
8903 htab->got_reli_size += rentsize;
8905 else if ((info->shared
8906 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8907 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8908 || h->root.type != bfd_link_hash_undefweak))
8910 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8911 relgot->size += rentsize;
8915 /* This function merges got entries in the same toc group. */
8918 merge_got_entries (struct got_entry **pent)
8920 struct got_entry *ent, *ent2;
8922 for (ent = *pent; ent != NULL; ent = ent->next)
8923 if (!ent->is_indirect)
8924 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8925 if (!ent2->is_indirect
8926 && ent2->addend == ent->addend
8927 && ent2->tls_type == ent->tls_type
8928 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8930 ent2->is_indirect = TRUE;
8931 ent2->got.ent = ent;
8935 /* Allocate space in .plt, .got and associated reloc sections for
8939 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8941 struct bfd_link_info *info;
8942 struct ppc_link_hash_table *htab;
8944 struct ppc_link_hash_entry *eh;
8945 struct elf_dyn_relocs *p;
8946 struct got_entry **pgent, *gent;
8948 if (h->root.type == bfd_link_hash_indirect)
8951 info = (struct bfd_link_info *) inf;
8952 htab = ppc_hash_table (info);
8956 if ((htab->elf.dynamic_sections_created
8958 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8959 || h->type == STT_GNU_IFUNC)
8961 struct plt_entry *pent;
8962 bfd_boolean doneone = FALSE;
8963 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8964 if (pent->plt.refcount > 0)
8966 if (!htab->elf.dynamic_sections_created
8967 || h->dynindx == -1)
8970 pent->plt.offset = s->size;
8971 s->size += PLT_ENTRY_SIZE;
8976 /* If this is the first .plt entry, make room for the special
8980 s->size += PLT_INITIAL_ENTRY_SIZE;
8982 pent->plt.offset = s->size;
8984 /* Make room for this entry. */
8985 s->size += PLT_ENTRY_SIZE;
8987 /* Make room for the .glink code. */
8990 s->size += GLINK_CALL_STUB_SIZE;
8991 /* We need bigger stubs past index 32767. */
8992 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8996 /* We also need to make an entry in the .rela.plt section. */
8999 s->size += sizeof (Elf64_External_Rela);
9003 pent->plt.offset = (bfd_vma) -1;
9006 h->plt.plist = NULL;
9012 h->plt.plist = NULL;
9016 eh = (struct ppc_link_hash_entry *) h;
9017 /* Run through the TLS GD got entries first if we're changing them
9019 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9020 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9021 if (gent->got.refcount > 0
9022 && (gent->tls_type & TLS_GD) != 0)
9024 /* This was a GD entry that has been converted to TPREL. If
9025 there happens to be a TPREL entry we can use that one. */
9026 struct got_entry *ent;
9027 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9028 if (ent->got.refcount > 0
9029 && (ent->tls_type & TLS_TPREL) != 0
9030 && ent->addend == gent->addend
9031 && ent->owner == gent->owner)
9033 gent->got.refcount = 0;
9037 /* If not, then we'll be using our own TPREL entry. */
9038 if (gent->got.refcount != 0)
9039 gent->tls_type = TLS_TLS | TLS_TPREL;
9042 /* Remove any list entry that won't generate a word in the GOT before
9043 we call merge_got_entries. Otherwise we risk merging to empty
9045 pgent = &h->got.glist;
9046 while ((gent = *pgent) != NULL)
9047 if (gent->got.refcount > 0)
9049 if ((gent->tls_type & TLS_LD) != 0
9052 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9053 *pgent = gent->next;
9056 pgent = &gent->next;
9059 *pgent = gent->next;
9061 if (!htab->do_multi_toc)
9062 merge_got_entries (&h->got.glist);
9064 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9065 if (!gent->is_indirect)
9067 /* Make sure this symbol is output as a dynamic symbol.
9068 Undefined weak syms won't yet be marked as dynamic,
9069 nor will all TLS symbols. */
9070 if (h->dynindx == -1
9072 && h->type != STT_GNU_IFUNC
9073 && htab->elf.dynamic_sections_created)
9075 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9079 if (!is_ppc64_elf (gent->owner))
9082 allocate_got (h, info, gent);
9085 if (eh->dyn_relocs == NULL
9086 || (!htab->elf.dynamic_sections_created
9087 && h->type != STT_GNU_IFUNC))
9090 /* In the shared -Bsymbolic case, discard space allocated for
9091 dynamic pc-relative relocs against symbols which turn out to be
9092 defined in regular objects. For the normal shared case, discard
9093 space for relocs that have become local due to symbol visibility
9098 /* Relocs that use pc_count are those that appear on a call insn,
9099 or certain REL relocs (see must_be_dyn_reloc) that can be
9100 generated via assembly. We want calls to protected symbols to
9101 resolve directly to the function rather than going via the plt.
9102 If people want function pointer comparisons to work as expected
9103 then they should avoid writing weird assembly. */
9104 if (SYMBOL_CALLS_LOCAL (info, h))
9106 struct elf_dyn_relocs **pp;
9108 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9110 p->count -= p->pc_count;
9119 /* Also discard relocs on undefined weak syms with non-default
9121 if (eh->dyn_relocs != NULL
9122 && h->root.type == bfd_link_hash_undefweak)
9124 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9125 eh->dyn_relocs = NULL;
9127 /* Make sure this symbol is output as a dynamic symbol.
9128 Undefined weak syms won't yet be marked as dynamic. */
9129 else if (h->dynindx == -1
9130 && !h->forced_local)
9132 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9137 else if (h->type == STT_GNU_IFUNC)
9139 if (!h->non_got_ref)
9140 eh->dyn_relocs = NULL;
9142 else if (ELIMINATE_COPY_RELOCS)
9144 /* For the non-shared case, discard space for relocs against
9145 symbols which turn out to need copy relocs or are not
9151 /* Make sure this symbol is output as a dynamic symbol.
9152 Undefined weak syms won't yet be marked as dynamic. */
9153 if (h->dynindx == -1
9154 && !h->forced_local)
9156 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9160 /* If that succeeded, we know we'll be keeping all the
9162 if (h->dynindx != -1)
9166 eh->dyn_relocs = NULL;
9171 /* Finally, allocate space. */
9172 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9174 asection *sreloc = elf_section_data (p->sec)->sreloc;
9175 if (eh->elf.type == STT_GNU_IFUNC)
9176 sreloc = htab->reliplt;
9177 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9183 /* Find any dynamic relocs that apply to read-only sections. */
9186 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9188 struct ppc_link_hash_entry *eh;
9189 struct elf_dyn_relocs *p;
9191 eh = (struct ppc_link_hash_entry *) h;
9192 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9194 asection *s = p->sec->output_section;
9196 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9198 struct bfd_link_info *info = inf;
9200 info->flags |= DF_TEXTREL;
9202 /* Not an error, just cut short the traversal. */
9209 /* Set the sizes of the dynamic sections. */
9212 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
9213 struct bfd_link_info *info)
9215 struct ppc_link_hash_table *htab;
9220 struct got_entry *first_tlsld;
9222 htab = ppc_hash_table (info);
9226 dynobj = htab->elf.dynobj;
9230 if (htab->elf.dynamic_sections_created)
9232 /* Set the contents of the .interp section to the interpreter. */
9233 if (info->executable)
9235 s = bfd_get_linker_section (dynobj, ".interp");
9238 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9239 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9243 /* Set up .got offsets for local syms, and space for local dynamic
9245 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9247 struct got_entry **lgot_ents;
9248 struct got_entry **end_lgot_ents;
9249 struct plt_entry **local_plt;
9250 struct plt_entry **end_local_plt;
9251 unsigned char *lgot_masks;
9252 bfd_size_type locsymcount;
9253 Elf_Internal_Shdr *symtab_hdr;
9255 if (!is_ppc64_elf (ibfd))
9258 for (s = ibfd->sections; s != NULL; s = s->next)
9260 struct ppc_dyn_relocs *p;
9262 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9264 if (!bfd_is_abs_section (p->sec)
9265 && bfd_is_abs_section (p->sec->output_section))
9267 /* Input section has been discarded, either because
9268 it is a copy of a linkonce section or due to
9269 linker script /DISCARD/, so we'll be discarding
9272 else if (p->count != 0)
9274 asection *srel = elf_section_data (p->sec)->sreloc;
9276 srel = htab->reliplt;
9277 srel->size += p->count * sizeof (Elf64_External_Rela);
9278 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9279 info->flags |= DF_TEXTREL;
9284 lgot_ents = elf_local_got_ents (ibfd);
9288 symtab_hdr = &elf_symtab_hdr (ibfd);
9289 locsymcount = symtab_hdr->sh_info;
9290 end_lgot_ents = lgot_ents + locsymcount;
9291 local_plt = (struct plt_entry **) end_lgot_ents;
9292 end_local_plt = local_plt + locsymcount;
9293 lgot_masks = (unsigned char *) end_local_plt;
9294 s = ppc64_elf_tdata (ibfd)->got;
9295 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9297 struct got_entry **pent, *ent;
9300 while ((ent = *pent) != NULL)
9301 if (ent->got.refcount > 0)
9303 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9305 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9310 unsigned int ent_size = 8;
9311 unsigned int rel_size = sizeof (Elf64_External_Rela);
9313 ent->got.offset = s->size;
9314 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9319 s->size += ent_size;
9320 if ((*lgot_masks & PLT_IFUNC) != 0)
9322 htab->reliplt->size += rel_size;
9323 htab->got_reli_size += rel_size;
9325 else if (info->shared)
9327 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9328 srel->size += rel_size;
9337 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9338 for (; local_plt < end_local_plt; ++local_plt)
9340 struct plt_entry *ent;
9342 for (ent = *local_plt; ent != NULL; ent = ent->next)
9343 if (ent->plt.refcount > 0)
9346 ent->plt.offset = s->size;
9347 s->size += PLT_ENTRY_SIZE;
9349 htab->reliplt->size += sizeof (Elf64_External_Rela);
9352 ent->plt.offset = (bfd_vma) -1;
9356 /* Allocate global sym .plt and .got entries, and space for global
9357 sym dynamic relocs. */
9358 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9361 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9363 struct got_entry *ent;
9365 if (!is_ppc64_elf (ibfd))
9368 ent = ppc64_tlsld_got (ibfd);
9369 if (ent->got.refcount > 0)
9371 if (!htab->do_multi_toc && first_tlsld != NULL)
9373 ent->is_indirect = TRUE;
9374 ent->got.ent = first_tlsld;
9378 if (first_tlsld == NULL)
9380 s = ppc64_elf_tdata (ibfd)->got;
9381 ent->got.offset = s->size;
9386 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9387 srel->size += sizeof (Elf64_External_Rela);
9392 ent->got.offset = (bfd_vma) -1;
9395 /* We now have determined the sizes of the various dynamic sections.
9396 Allocate memory for them. */
9398 for (s = dynobj->sections; s != NULL; s = s->next)
9400 if ((s->flags & SEC_LINKER_CREATED) == 0)
9403 if (s == htab->brlt || s == htab->relbrlt)
9404 /* These haven't been allocated yet; don't strip. */
9406 else if (s == htab->got
9410 || s == htab->dynbss)
9412 /* Strip this section if we don't need it; see the
9415 else if (s == htab->glink_eh_frame)
9417 if (!bfd_is_abs_section (s->output_section))
9418 /* Not sized yet. */
9421 else if (CONST_STRNEQ (s->name, ".rela"))
9425 if (s != htab->relplt)
9428 /* We use the reloc_count field as a counter if we need
9429 to copy relocs into the output file. */
9435 /* It's not one of our sections, so don't allocate space. */
9441 /* If we don't need this section, strip it from the
9442 output file. This is mostly to handle .rela.bss and
9443 .rela.plt. We must create both sections in
9444 create_dynamic_sections, because they must be created
9445 before the linker maps input sections to output
9446 sections. The linker does that before
9447 adjust_dynamic_symbol is called, and it is that
9448 function which decides whether anything needs to go
9449 into these sections. */
9450 s->flags |= SEC_EXCLUDE;
9454 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9457 /* Allocate memory for the section contents. We use bfd_zalloc
9458 here in case unused entries are not reclaimed before the
9459 section's contents are written out. This should not happen,
9460 but this way if it does we get a R_PPC64_NONE reloc in .rela
9461 sections instead of garbage.
9462 We also rely on the section contents being zero when writing
9464 s->contents = bfd_zalloc (dynobj, s->size);
9465 if (s->contents == NULL)
9469 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9471 if (!is_ppc64_elf (ibfd))
9474 s = ppc64_elf_tdata (ibfd)->got;
9475 if (s != NULL && s != htab->got)
9478 s->flags |= SEC_EXCLUDE;
9481 s->contents = bfd_zalloc (ibfd, s->size);
9482 if (s->contents == NULL)
9486 s = ppc64_elf_tdata (ibfd)->relgot;
9490 s->flags |= SEC_EXCLUDE;
9493 s->contents = bfd_zalloc (ibfd, s->size);
9494 if (s->contents == NULL)
9502 if (htab->elf.dynamic_sections_created)
9504 /* Add some entries to the .dynamic section. We fill in the
9505 values later, in ppc64_elf_finish_dynamic_sections, but we
9506 must add the entries now so that we get the correct size for
9507 the .dynamic section. The DT_DEBUG entry is filled in by the
9508 dynamic linker and used by the debugger. */
9509 #define add_dynamic_entry(TAG, VAL) \
9510 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9512 if (info->executable)
9514 if (!add_dynamic_entry (DT_DEBUG, 0))
9518 if (htab->plt != NULL && htab->plt->size != 0)
9520 if (!add_dynamic_entry (DT_PLTGOT, 0)
9521 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9522 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9523 || !add_dynamic_entry (DT_JMPREL, 0)
9524 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9530 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9531 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9535 if (!htab->no_tls_get_addr_opt
9536 && htab->tls_get_addr_fd != NULL
9537 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9538 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9543 if (!add_dynamic_entry (DT_RELA, 0)
9544 || !add_dynamic_entry (DT_RELASZ, 0)
9545 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9548 /* If any dynamic relocs apply to a read-only section,
9549 then we need a DT_TEXTREL entry. */
9550 if ((info->flags & DF_TEXTREL) == 0)
9551 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9553 if ((info->flags & DF_TEXTREL) != 0)
9555 if (!add_dynamic_entry (DT_TEXTREL, 0))
9560 #undef add_dynamic_entry
9565 /* Determine the type of stub needed, if any, for a call. */
9567 static inline enum ppc_stub_type
9568 ppc_type_of_stub (asection *input_sec,
9569 const Elf_Internal_Rela *rel,
9570 struct ppc_link_hash_entry **hash,
9571 struct plt_entry **plt_ent,
9572 bfd_vma destination)
9574 struct ppc_link_hash_entry *h = *hash;
9576 bfd_vma branch_offset;
9577 bfd_vma max_branch_offset;
9578 enum elf_ppc64_reloc_type r_type;
9582 struct plt_entry *ent;
9583 struct ppc_link_hash_entry *fdh = h;
9585 && h->oh->is_func_descriptor)
9587 fdh = ppc_follow_link (h->oh);
9591 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9592 if (ent->addend == rel->r_addend
9593 && ent->plt.offset != (bfd_vma) -1)
9596 return ppc_stub_plt_call;
9599 /* Here, we know we don't have a plt entry. If we don't have a
9600 either a defined function descriptor or a defined entry symbol
9601 in a regular object file, then it is pointless trying to make
9602 any other type of stub. */
9603 if (!is_static_defined (&fdh->elf)
9604 && !is_static_defined (&h->elf))
9605 return ppc_stub_none;
9607 else if (elf_local_got_ents (input_sec->owner) != NULL)
9609 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9610 struct plt_entry **local_plt = (struct plt_entry **)
9611 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9612 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9614 if (local_plt[r_symndx] != NULL)
9616 struct plt_entry *ent;
9618 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9619 if (ent->addend == rel->r_addend
9620 && ent->plt.offset != (bfd_vma) -1)
9623 return ppc_stub_plt_call;
9628 /* Determine where the call point is. */
9629 location = (input_sec->output_offset
9630 + input_sec->output_section->vma
9633 branch_offset = destination - location;
9634 r_type = ELF64_R_TYPE (rel->r_info);
9636 /* Determine if a long branch stub is needed. */
9637 max_branch_offset = 1 << 25;
9638 if (r_type != R_PPC64_REL24)
9639 max_branch_offset = 1 << 15;
9641 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9642 /* We need a stub. Figure out whether a long_branch or plt_branch
9644 return ppc_stub_long_branch;
9646 return ppc_stub_none;
9649 /* With power7 weakly ordered memory model, it is possible for ld.so
9650 to update a plt entry in one thread and have another thread see a
9651 stale zero toc entry. To avoid this we need some sort of acquire
9652 barrier in the call stub. One solution is to make the load of the
9653 toc word seem to appear to depend on the load of the function entry
9654 word. Another solution is to test for r2 being zero, and branch to
9655 the appropriate glink entry if so.
9657 . fake dep barrier compare
9658 . ld 11,xxx(2) ld 11,xxx(2)
9660 . xor 11,11,11 ld 2,xxx+8(2)
9661 . add 2,2,11 cmpldi 2,0
9662 . ld 2,xxx+8(2) bnectr+
9663 . bctr b <glink_entry>
9665 The solution involving the compare turns out to be faster, so
9666 that's what we use unless the branch won't reach. */
9668 #define ALWAYS_USE_FAKE_DEP 0
9669 #define ALWAYS_EMIT_R2SAVE 0
9671 #define PPC_LO(v) ((v) & 0xffff)
9672 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9673 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9675 static inline unsigned int
9676 plt_stub_size (struct ppc_link_hash_table *htab,
9677 struct ppc_stub_hash_entry *stub_entry,
9680 unsigned size = PLT_CALL_STUB_SIZE;
9682 if (!(ALWAYS_EMIT_R2SAVE
9683 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
9685 if (!htab->plt_static_chain)
9687 if (htab->plt_thread_safe)
9689 if (PPC_HA (off) == 0)
9691 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
9693 if (stub_entry->h != NULL
9694 && (stub_entry->h == htab->tls_get_addr_fd
9695 || stub_entry->h == htab->tls_get_addr)
9696 && !htab->no_tls_get_addr_opt)
9701 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9702 then return the padding needed to do so. */
9703 static inline unsigned int
9704 plt_stub_pad (struct ppc_link_hash_table *htab,
9705 struct ppc_stub_hash_entry *stub_entry,
9708 int stub_align = 1 << htab->plt_stub_align;
9709 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
9710 bfd_vma stub_off = stub_entry->stub_sec->size;
9712 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
9713 > (stub_size & -stub_align))
9714 return stub_align - (stub_off & (stub_align - 1));
9718 /* Build a .plt call stub. */
9720 static inline bfd_byte *
9721 build_plt_stub (struct ppc_link_hash_table *htab,
9722 struct ppc_stub_hash_entry *stub_entry,
9723 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9725 bfd *obfd = htab->stub_bfd;
9726 bfd_boolean plt_static_chain = htab->plt_static_chain;
9727 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
9728 bfd_boolean use_fake_dep = plt_thread_safe;
9729 bfd_vma cmp_branch_off = 0;
9731 if (!ALWAYS_USE_FAKE_DEP
9733 && !(stub_entry->h != NULL
9734 && (stub_entry->h == htab->tls_get_addr_fd
9735 || stub_entry->h == htab->tls_get_addr)
9736 && !htab->no_tls_get_addr_opt))
9738 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
9739 bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9740 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
9743 if (pltindex > 32768)
9744 glinkoff += (pltindex - 32768) * 4;
9746 + htab->glink->output_offset
9747 + htab->glink->output_section->vma);
9748 from = (p - stub_entry->stub_sec->contents
9749 + 4 * (ALWAYS_EMIT_R2SAVE
9750 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9751 + 4 * (PPC_HA (offset) != 0)
9752 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
9754 + 4 * (plt_static_chain != 0)
9756 + stub_entry->stub_sec->output_offset
9757 + stub_entry->stub_sec->output_section->vma);
9758 cmp_branch_off = to - from;
9759 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
9762 if (PPC_HA (offset) != 0)
9766 if (ALWAYS_EMIT_R2SAVE
9767 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9769 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9770 r[1].r_offset = r[0].r_offset + 4;
9771 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9772 r[1].r_addend = r[0].r_addend;
9773 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9775 r[2].r_offset = r[1].r_offset + 4;
9776 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9777 r[2].r_addend = r[0].r_addend;
9781 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
9782 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9783 r[2].r_addend = r[0].r_addend + 8;
9784 if (plt_static_chain)
9786 r[3].r_offset = r[2].r_offset + 4;
9787 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9788 r[3].r_addend = r[0].r_addend + 16;
9792 if (ALWAYS_EMIT_R2SAVE
9793 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9794 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9795 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9796 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9797 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9799 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9802 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9805 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9806 bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4;
9808 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9809 if (plt_static_chain)
9810 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9816 if (ALWAYS_EMIT_R2SAVE
9817 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9819 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9820 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9822 r[1].r_offset = r[0].r_offset + 4;
9823 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9824 r[1].r_addend = r[0].r_addend;
9828 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
9829 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9830 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
9831 if (plt_static_chain)
9833 r[2].r_offset = r[1].r_offset + 4;
9834 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9835 r[2].r_addend = r[0].r_addend + 8;
9839 if (ALWAYS_EMIT_R2SAVE
9840 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9841 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9842 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9843 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9845 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9848 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9851 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9852 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
9854 if (plt_static_chain)
9855 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9856 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9858 if (plt_thread_safe && !use_fake_dep)
9860 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
9861 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
9862 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
9865 bfd_put_32 (obfd, BCTR, p), p += 4;
9869 /* Build a special .plt call stub for __tls_get_addr. */
9871 #define LD_R11_0R3 0xe9630000
9872 #define LD_R12_0R3 0xe9830000
9873 #define MR_R0_R3 0x7c601b78
9874 #define CMPDI_R11_0 0x2c2b0000
9875 #define ADD_R3_R12_R13 0x7c6c6a14
9876 #define BEQLR 0x4d820020
9877 #define MR_R3_R0 0x7c030378
9878 #define MFLR_R11 0x7d6802a6
9879 #define STD_R11_0R1 0xf9610000
9880 #define BCTRL 0x4e800421
9881 #define LD_R11_0R1 0xe9610000
9882 #define LD_R2_0R1 0xe8410000
9883 #define MTLR_R11 0x7d6803a6
9885 static inline bfd_byte *
9886 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
9887 struct ppc_stub_hash_entry *stub_entry,
9888 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9890 bfd *obfd = htab->stub_bfd;
9892 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9893 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9894 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9895 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9896 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9897 bfd_put_32 (obfd, BEQLR, p), p += 4;
9898 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9899 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9900 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9903 r[0].r_offset += 9 * 4;
9904 p = build_plt_stub (htab, stub_entry, p, offset, r);
9905 bfd_put_32 (obfd, BCTRL, p - 4);
9907 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9908 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9909 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9910 bfd_put_32 (obfd, BLR, p), p += 4;
9915 static Elf_Internal_Rela *
9916 get_relocs (asection *sec, int count)
9918 Elf_Internal_Rela *relocs;
9919 struct bfd_elf_section_data *elfsec_data;
9921 elfsec_data = elf_section_data (sec);
9922 relocs = elfsec_data->relocs;
9925 bfd_size_type relsize;
9926 relsize = sec->reloc_count * sizeof (*relocs);
9927 relocs = bfd_alloc (sec->owner, relsize);
9930 elfsec_data->relocs = relocs;
9931 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9932 sizeof (Elf_Internal_Shdr));
9933 if (elfsec_data->rela.hdr == NULL)
9935 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9936 * sizeof (Elf64_External_Rela));
9937 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
9938 sec->reloc_count = 0;
9940 relocs += sec->reloc_count;
9941 sec->reloc_count += count;
9946 get_r2off (struct bfd_link_info *info,
9947 struct ppc_stub_hash_entry *stub_entry)
9949 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9950 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9954 /* Support linking -R objects. Get the toc pointer from the
9957 asection *opd = stub_entry->h->elf.root.u.def.section;
9958 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9960 if (strcmp (opd->name, ".opd") != 0
9961 || opd->reloc_count != 0)
9963 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
9964 stub_entry->h->elf.root.root.string);
9965 bfd_set_error (bfd_error_bad_value);
9968 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9970 r2off = bfd_get_64 (opd->owner, buf);
9971 r2off -= elf_gp (info->output_bfd);
9973 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9978 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9980 struct ppc_stub_hash_entry *stub_entry;
9981 struct ppc_branch_hash_entry *br_entry;
9982 struct bfd_link_info *info;
9983 struct ppc_link_hash_table *htab;
9988 Elf_Internal_Rela *r;
9991 /* Massage our args to the form they really have. */
9992 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9995 htab = ppc_hash_table (info);
9999 /* Make a note of the offset within the stubs for this entry. */
10000 stub_entry->stub_offset = stub_entry->stub_sec->size;
10001 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10003 htab->stub_count[stub_entry->stub_type - 1] += 1;
10004 switch (stub_entry->stub_type)
10006 case ppc_stub_long_branch:
10007 case ppc_stub_long_branch_r2off:
10008 /* Branches are relative. This is where we are going to. */
10009 off = dest = (stub_entry->target_value
10010 + stub_entry->target_section->output_offset
10011 + stub_entry->target_section->output_section->vma);
10013 /* And this is where we are coming from. */
10014 off -= (stub_entry->stub_offset
10015 + stub_entry->stub_sec->output_offset
10016 + stub_entry->stub_sec->output_section->vma);
10019 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10021 bfd_vma r2off = get_r2off (info, stub_entry);
10025 htab->stub_error = TRUE;
10028 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10031 if (PPC_HA (r2off) != 0)
10034 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10037 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10041 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10043 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10045 info->callbacks->einfo
10046 (_("%P: long branch stub `%s' offset overflow\n"),
10047 stub_entry->root.string);
10048 htab->stub_error = TRUE;
10052 if (info->emitrelocations)
10054 r = get_relocs (stub_entry->stub_sec, 1);
10057 r->r_offset = loc - stub_entry->stub_sec->contents;
10058 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10059 r->r_addend = dest;
10060 if (stub_entry->h != NULL)
10062 struct elf_link_hash_entry **hashes;
10063 unsigned long symndx;
10064 struct ppc_link_hash_entry *h;
10066 hashes = elf_sym_hashes (htab->stub_bfd);
10067 if (hashes == NULL)
10069 bfd_size_type hsize;
10071 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10072 hashes = bfd_zalloc (htab->stub_bfd, hsize);
10073 if (hashes == NULL)
10075 elf_sym_hashes (htab->stub_bfd) = hashes;
10076 htab->stub_globals = 1;
10078 symndx = htab->stub_globals++;
10080 hashes[symndx] = &h->elf;
10081 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10082 if (h->oh != NULL && h->oh->is_func)
10083 h = ppc_follow_link (h->oh);
10084 if (h->elf.root.u.def.section != stub_entry->target_section)
10085 /* H is an opd symbol. The addend must be zero. */
10089 off = (h->elf.root.u.def.value
10090 + h->elf.root.u.def.section->output_offset
10091 + h->elf.root.u.def.section->output_section->vma);
10092 r->r_addend -= off;
10098 case ppc_stub_plt_branch:
10099 case ppc_stub_plt_branch_r2off:
10100 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10101 stub_entry->root.string + 9,
10103 if (br_entry == NULL)
10105 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10106 stub_entry->root.string);
10107 htab->stub_error = TRUE;
10111 dest = (stub_entry->target_value
10112 + stub_entry->target_section->output_offset
10113 + stub_entry->target_section->output_section->vma);
10115 bfd_put_64 (htab->brlt->owner, dest,
10116 htab->brlt->contents + br_entry->offset);
10118 if (br_entry->iter == htab->stub_iteration)
10120 br_entry->iter = 0;
10122 if (htab->relbrlt != NULL)
10124 /* Create a reloc for the branch lookup table entry. */
10125 Elf_Internal_Rela rela;
10128 rela.r_offset = (br_entry->offset
10129 + htab->brlt->output_offset
10130 + htab->brlt->output_section->vma);
10131 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10132 rela.r_addend = dest;
10134 rl = htab->relbrlt->contents;
10135 rl += (htab->relbrlt->reloc_count++
10136 * sizeof (Elf64_External_Rela));
10137 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10139 else if (info->emitrelocations)
10141 r = get_relocs (htab->brlt, 1);
10144 /* brlt, being SEC_LINKER_CREATED does not go through the
10145 normal reloc processing. Symbols and offsets are not
10146 translated from input file to output file form, so
10147 set up the offset per the output file. */
10148 r->r_offset = (br_entry->offset
10149 + htab->brlt->output_offset
10150 + htab->brlt->output_section->vma);
10151 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10152 r->r_addend = dest;
10156 dest = (br_entry->offset
10157 + htab->brlt->output_offset
10158 + htab->brlt->output_section->vma);
10161 - elf_gp (htab->brlt->output_section->owner)
10162 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10164 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10166 info->callbacks->einfo
10167 (_("%P: linkage table error against `%T'\n"),
10168 stub_entry->root.string);
10169 bfd_set_error (bfd_error_bad_value);
10170 htab->stub_error = TRUE;
10174 if (info->emitrelocations)
10176 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10179 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10180 if (bfd_big_endian (info->output_bfd))
10181 r[0].r_offset += 2;
10182 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10183 r[0].r_offset += 4;
10184 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10185 r[0].r_addend = dest;
10186 if (PPC_HA (off) != 0)
10188 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10189 r[1].r_offset = r[0].r_offset + 4;
10190 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10191 r[1].r_addend = r[0].r_addend;
10195 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10197 if (PPC_HA (off) != 0)
10200 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10202 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10207 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10212 bfd_vma r2off = get_r2off (info, stub_entry);
10216 htab->stub_error = TRUE;
10220 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10223 if (PPC_HA (off) != 0)
10226 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10228 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10233 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10237 if (PPC_HA (r2off) != 0)
10240 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10243 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10246 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
10248 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10251 case ppc_stub_plt_call:
10252 case ppc_stub_plt_call_r2save:
10253 if (stub_entry->h != NULL
10254 && stub_entry->h->is_func_descriptor
10255 && stub_entry->h->oh != NULL)
10257 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10259 /* If the old-ABI "dot-symbol" is undefined make it weak so
10260 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10261 FIXME: We used to define the symbol on one of the call
10262 stubs instead, which is why we test symbol section id
10263 against htab->top_id in various places. Likely all
10264 these checks could now disappear. */
10265 if (fh->elf.root.type == bfd_link_hash_undefined)
10266 fh->elf.root.type = bfd_link_hash_undefweak;
10267 /* Stop undo_symbol_twiddle changing it back to undefined. */
10268 fh->was_undefined = 0;
10271 /* Now build the stub. */
10272 dest = stub_entry->plt_ent->plt.offset & ~1;
10273 if (dest >= (bfd_vma) -2)
10277 if (!htab->elf.dynamic_sections_created
10278 || stub_entry->h == NULL
10279 || stub_entry->h->elf.dynindx == -1)
10282 dest += plt->output_offset + plt->output_section->vma;
10284 if (stub_entry->h == NULL
10285 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10287 Elf_Internal_Rela rela;
10290 rela.r_offset = dest;
10291 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10292 rela.r_addend = (stub_entry->target_value
10293 + stub_entry->target_section->output_offset
10294 + stub_entry->target_section->output_section->vma);
10296 rl = (htab->reliplt->contents
10297 + (htab->reliplt->reloc_count++
10298 * sizeof (Elf64_External_Rela)));
10299 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10300 stub_entry->plt_ent->plt.offset |= 1;
10304 - elf_gp (plt->output_section->owner)
10305 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10307 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10309 info->callbacks->einfo
10310 (_("%P: linkage table error against `%T'\n"),
10311 stub_entry->h != NULL
10312 ? stub_entry->h->elf.root.root.string
10314 bfd_set_error (bfd_error_bad_value);
10315 htab->stub_error = TRUE;
10319 if (htab->plt_stub_align != 0)
10321 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10323 stub_entry->stub_sec->size += pad;
10324 stub_entry->stub_offset = stub_entry->stub_sec->size;
10329 if (info->emitrelocations)
10331 r = get_relocs (stub_entry->stub_sec,
10333 + (PPC_HA (off) != 0)
10334 + (htab->plt_static_chain
10335 && PPC_HA (off + 16) == PPC_HA (off))));
10338 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10339 if (bfd_big_endian (info->output_bfd))
10340 r[0].r_offset += 2;
10341 r[0].r_addend = dest;
10343 if (stub_entry->h != NULL
10344 && (stub_entry->h == htab->tls_get_addr_fd
10345 || stub_entry->h == htab->tls_get_addr)
10346 && !htab->no_tls_get_addr_opt)
10347 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10349 p = build_plt_stub (htab, stub_entry, loc, off, r);
10358 stub_entry->stub_sec->size += size;
10360 if (htab->emit_stub_syms)
10362 struct elf_link_hash_entry *h;
10365 const char *const stub_str[] = { "long_branch",
10366 "long_branch_r2off",
10368 "plt_branch_r2off",
10372 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10373 len2 = strlen (stub_entry->root.string);
10374 name = bfd_malloc (len1 + len2 + 2);
10377 memcpy (name, stub_entry->root.string, 9);
10378 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10379 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10380 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10383 if (h->root.type == bfd_link_hash_new)
10385 h->root.type = bfd_link_hash_defined;
10386 h->root.u.def.section = stub_entry->stub_sec;
10387 h->root.u.def.value = stub_entry->stub_offset;
10388 h->ref_regular = 1;
10389 h->def_regular = 1;
10390 h->ref_regular_nonweak = 1;
10391 h->forced_local = 1;
10399 /* As above, but don't actually build the stub. Just bump offset so
10400 we know stub section sizes, and select plt_branch stubs where
10401 long_branch stubs won't do. */
10404 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10406 struct ppc_stub_hash_entry *stub_entry;
10407 struct bfd_link_info *info;
10408 struct ppc_link_hash_table *htab;
10412 /* Massage our args to the form they really have. */
10413 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10416 htab = ppc_hash_table (info);
10420 if (stub_entry->stub_type == ppc_stub_plt_call
10421 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10424 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10425 if (off >= (bfd_vma) -2)
10428 if (!htab->elf.dynamic_sections_created
10429 || stub_entry->h == NULL
10430 || stub_entry->h->elf.dynindx == -1)
10432 off += (plt->output_offset
10433 + plt->output_section->vma
10434 - elf_gp (plt->output_section->owner)
10435 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10437 size = plt_stub_size (htab, stub_entry, off);
10438 if (htab->plt_stub_align)
10439 size += plt_stub_pad (htab, stub_entry, off);
10440 if (info->emitrelocations)
10442 stub_entry->stub_sec->reloc_count
10444 + (PPC_HA (off) != 0)
10445 + (htab->plt_static_chain
10446 && PPC_HA (off + 16) == PPC_HA (off)));
10447 stub_entry->stub_sec->flags |= SEC_RELOC;
10452 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10456 off = (stub_entry->target_value
10457 + stub_entry->target_section->output_offset
10458 + stub_entry->target_section->output_section->vma);
10459 off -= (stub_entry->stub_sec->size
10460 + stub_entry->stub_sec->output_offset
10461 + stub_entry->stub_sec->output_section->vma);
10463 /* Reset the stub type from the plt variant in case we now
10464 can reach with a shorter stub. */
10465 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10466 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10469 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10471 r2off = get_r2off (info, stub_entry);
10474 htab->stub_error = TRUE;
10478 if (PPC_HA (r2off) != 0)
10483 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10484 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10486 struct ppc_branch_hash_entry *br_entry;
10488 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10489 stub_entry->root.string + 9,
10491 if (br_entry == NULL)
10493 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10494 stub_entry->root.string);
10495 htab->stub_error = TRUE;
10499 if (br_entry->iter != htab->stub_iteration)
10501 br_entry->iter = htab->stub_iteration;
10502 br_entry->offset = htab->brlt->size;
10503 htab->brlt->size += 8;
10505 if (htab->relbrlt != NULL)
10506 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10507 else if (info->emitrelocations)
10509 htab->brlt->reloc_count += 1;
10510 htab->brlt->flags |= SEC_RELOC;
10514 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10515 off = (br_entry->offset
10516 + htab->brlt->output_offset
10517 + htab->brlt->output_section->vma
10518 - elf_gp (htab->brlt->output_section->owner)
10519 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10521 if (info->emitrelocations)
10523 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10524 stub_entry->stub_sec->flags |= SEC_RELOC;
10527 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10530 if (PPC_HA (off) != 0)
10536 if (PPC_HA (off) != 0)
10539 if (PPC_HA (r2off) != 0)
10543 else if (info->emitrelocations)
10545 stub_entry->stub_sec->reloc_count += 1;
10546 stub_entry->stub_sec->flags |= SEC_RELOC;
10550 stub_entry->stub_sec->size += size;
10554 /* Set up various things so that we can make a list of input sections
10555 for each output section included in the link. Returns -1 on error,
10556 0 when no stubs will be needed, and 1 on success. */
10559 ppc64_elf_setup_section_lists
10560 (struct bfd_link_info *info,
10561 asection *(*add_stub_section) (const char *, asection *),
10562 void (*layout_sections_again) (void))
10565 int top_id, top_index, id;
10567 asection **input_list;
10569 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10573 /* Stash our params away. */
10574 htab->add_stub_section = add_stub_section;
10575 htab->layout_sections_again = layout_sections_again;
10577 /* Find the top input section id. */
10578 for (input_bfd = info->input_bfds, top_id = 3;
10580 input_bfd = input_bfd->link_next)
10582 for (section = input_bfd->sections;
10584 section = section->next)
10586 if (top_id < section->id)
10587 top_id = section->id;
10591 htab->top_id = top_id;
10592 amt = sizeof (struct map_stub) * (top_id + 1);
10593 htab->stub_group = bfd_zmalloc (amt);
10594 if (htab->stub_group == NULL)
10597 /* Set toc_off for com, und, abs and ind sections. */
10598 for (id = 0; id < 3; id++)
10599 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10601 /* We can't use output_bfd->section_count here to find the top output
10602 section index as some sections may have been removed, and
10603 strip_excluded_output_sections doesn't renumber the indices. */
10604 for (section = info->output_bfd->sections, top_index = 0;
10606 section = section->next)
10608 if (top_index < section->index)
10609 top_index = section->index;
10612 htab->top_index = top_index;
10613 amt = sizeof (asection *) * (top_index + 1);
10614 input_list = bfd_zmalloc (amt);
10615 htab->input_list = input_list;
10616 if (input_list == NULL)
10622 /* Set up for first pass at multitoc partitioning. */
10625 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10627 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10629 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
10630 htab->toc_bfd = NULL;
10631 htab->toc_first_sec = NULL;
10634 /* The linker repeatedly calls this function for each TOC input section
10635 and linker generated GOT section. Group input bfds such that the toc
10636 within a group is less than 64k in size. */
10639 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10641 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10642 bfd_vma addr, off, limit;
10647 if (!htab->second_toc_pass)
10649 /* Keep track of the first .toc or .got section for this input bfd. */
10650 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
10654 htab->toc_bfd = isec->owner;
10655 htab->toc_first_sec = isec;
10658 addr = isec->output_offset + isec->output_section->vma;
10659 off = addr - htab->toc_curr;
10660 limit = 0x80008000;
10661 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10663 if (off + isec->size > limit)
10665 addr = (htab->toc_first_sec->output_offset
10666 + htab->toc_first_sec->output_section->vma);
10667 htab->toc_curr = addr;
10670 /* toc_curr is the base address of this toc group. Set elf_gp
10671 for the input section to be the offset relative to the
10672 output toc base plus 0x8000. Making the input elf_gp an
10673 offset allows us to move the toc as a whole without
10674 recalculating input elf_gp. */
10675 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10676 off += TOC_BASE_OFF;
10678 /* Die if someone uses a linker script that doesn't keep input
10679 file .toc and .got together. */
10681 && elf_gp (isec->owner) != 0
10682 && elf_gp (isec->owner) != off)
10685 elf_gp (isec->owner) = off;
10689 /* During the second pass toc_first_sec points to the start of
10690 a toc group, and toc_curr is used to track the old elf_gp.
10691 We use toc_bfd to ensure we only look at each bfd once. */
10692 if (htab->toc_bfd == isec->owner)
10694 htab->toc_bfd = isec->owner;
10696 if (htab->toc_first_sec == NULL
10697 || htab->toc_curr != elf_gp (isec->owner))
10699 htab->toc_curr = elf_gp (isec->owner);
10700 htab->toc_first_sec = isec;
10702 addr = (htab->toc_first_sec->output_offset
10703 + htab->toc_first_sec->output_section->vma);
10704 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10705 elf_gp (isec->owner) = off;
10710 /* Called via elf_link_hash_traverse to merge GOT entries for global
10714 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10716 if (h->root.type == bfd_link_hash_indirect)
10719 merge_got_entries (&h->got.glist);
10724 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10728 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10730 struct got_entry *gent;
10732 if (h->root.type == bfd_link_hash_indirect)
10735 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10736 if (!gent->is_indirect)
10737 allocate_got (h, (struct bfd_link_info *) inf, gent);
10741 /* Called on the first multitoc pass after the last call to
10742 ppc64_elf_next_toc_section. This function removes duplicate GOT
10746 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10748 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10749 struct bfd *ibfd, *ibfd2;
10750 bfd_boolean done_something;
10752 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10754 if (!htab->do_multi_toc)
10757 /* Merge global sym got entries within a toc group. */
10758 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10760 /* And tlsld_got. */
10761 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10763 struct got_entry *ent, *ent2;
10765 if (!is_ppc64_elf (ibfd))
10768 ent = ppc64_tlsld_got (ibfd);
10769 if (!ent->is_indirect
10770 && ent->got.offset != (bfd_vma) -1)
10772 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10774 if (!is_ppc64_elf (ibfd2))
10777 ent2 = ppc64_tlsld_got (ibfd2);
10778 if (!ent2->is_indirect
10779 && ent2->got.offset != (bfd_vma) -1
10780 && elf_gp (ibfd2) == elf_gp (ibfd))
10782 ent2->is_indirect = TRUE;
10783 ent2->got.ent = ent;
10789 /* Zap sizes of got sections. */
10790 htab->reliplt->rawsize = htab->reliplt->size;
10791 htab->reliplt->size -= htab->got_reli_size;
10792 htab->got_reli_size = 0;
10794 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10796 asection *got, *relgot;
10798 if (!is_ppc64_elf (ibfd))
10801 got = ppc64_elf_tdata (ibfd)->got;
10804 got->rawsize = got->size;
10806 relgot = ppc64_elf_tdata (ibfd)->relgot;
10807 relgot->rawsize = relgot->size;
10812 /* Now reallocate the got, local syms first. We don't need to
10813 allocate section contents again since we never increase size. */
10814 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10816 struct got_entry **lgot_ents;
10817 struct got_entry **end_lgot_ents;
10818 struct plt_entry **local_plt;
10819 struct plt_entry **end_local_plt;
10820 unsigned char *lgot_masks;
10821 bfd_size_type locsymcount;
10822 Elf_Internal_Shdr *symtab_hdr;
10825 if (!is_ppc64_elf (ibfd))
10828 lgot_ents = elf_local_got_ents (ibfd);
10832 symtab_hdr = &elf_symtab_hdr (ibfd);
10833 locsymcount = symtab_hdr->sh_info;
10834 end_lgot_ents = lgot_ents + locsymcount;
10835 local_plt = (struct plt_entry **) end_lgot_ents;
10836 end_local_plt = local_plt + locsymcount;
10837 lgot_masks = (unsigned char *) end_local_plt;
10838 s = ppc64_elf_tdata (ibfd)->got;
10839 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10841 struct got_entry *ent;
10843 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10845 unsigned int ent_size = 8;
10846 unsigned int rel_size = sizeof (Elf64_External_Rela);
10848 ent->got.offset = s->size;
10849 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10854 s->size += ent_size;
10855 if ((*lgot_masks & PLT_IFUNC) != 0)
10857 htab->reliplt->size += rel_size;
10858 htab->got_reli_size += rel_size;
10860 else if (info->shared)
10862 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10863 srel->size += rel_size;
10869 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10871 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10873 struct got_entry *ent;
10875 if (!is_ppc64_elf (ibfd))
10878 ent = ppc64_tlsld_got (ibfd);
10879 if (!ent->is_indirect
10880 && ent->got.offset != (bfd_vma) -1)
10882 asection *s = ppc64_elf_tdata (ibfd)->got;
10883 ent->got.offset = s->size;
10887 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10888 srel->size += sizeof (Elf64_External_Rela);
10893 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10894 if (!done_something)
10895 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10899 if (!is_ppc64_elf (ibfd))
10902 got = ppc64_elf_tdata (ibfd)->got;
10905 done_something = got->rawsize != got->size;
10906 if (done_something)
10911 if (done_something)
10912 (*htab->layout_sections_again) ();
10914 /* Set up for second pass over toc sections to recalculate elf_gp
10915 on input sections. */
10916 htab->toc_bfd = NULL;
10917 htab->toc_first_sec = NULL;
10918 htab->second_toc_pass = TRUE;
10919 return done_something;
10922 /* Called after second pass of multitoc partitioning. */
10925 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10927 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10929 /* After the second pass, toc_curr tracks the TOC offset used
10930 for code sections below in ppc64_elf_next_input_section. */
10931 htab->toc_curr = TOC_BASE_OFF;
10934 /* No toc references were found in ISEC. If the code in ISEC makes no
10935 calls, then there's no need to use toc adjusting stubs when branching
10936 into ISEC. Actually, indirect calls from ISEC are OK as they will
10937 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10938 needed, and 2 if a cyclical call-graph was found but no other reason
10939 for a stub was detected. If called from the top level, a return of
10940 2 means the same as a return of 0. */
10943 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10947 /* Mark this section as checked. */
10948 isec->call_check_done = 1;
10950 /* We know none of our code bearing sections will need toc stubs. */
10951 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10954 if (isec->size == 0)
10957 if (isec->output_section == NULL)
10961 if (isec->reloc_count != 0)
10963 Elf_Internal_Rela *relstart, *rel;
10964 Elf_Internal_Sym *local_syms;
10965 struct ppc_link_hash_table *htab;
10967 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10968 info->keep_memory);
10969 if (relstart == NULL)
10972 /* Look for branches to outside of this section. */
10974 htab = ppc_hash_table (info);
10978 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10980 enum elf_ppc64_reloc_type r_type;
10981 unsigned long r_symndx;
10982 struct elf_link_hash_entry *h;
10983 struct ppc_link_hash_entry *eh;
10984 Elf_Internal_Sym *sym;
10986 struct _opd_sec_data *opd;
10990 r_type = ELF64_R_TYPE (rel->r_info);
10991 if (r_type != R_PPC64_REL24
10992 && r_type != R_PPC64_REL14
10993 && r_type != R_PPC64_REL14_BRTAKEN
10994 && r_type != R_PPC64_REL14_BRNTAKEN)
10997 r_symndx = ELF64_R_SYM (rel->r_info);
10998 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11005 /* Calls to dynamic lib functions go through a plt call stub
11007 eh = (struct ppc_link_hash_entry *) h;
11009 && (eh->elf.plt.plist != NULL
11011 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11017 if (sym_sec == NULL)
11018 /* Ignore other undefined symbols. */
11021 /* Assume branches to other sections not included in the
11022 link need stubs too, to cover -R and absolute syms. */
11023 if (sym_sec->output_section == NULL)
11030 sym_value = sym->st_value;
11033 if (h->root.type != bfd_link_hash_defined
11034 && h->root.type != bfd_link_hash_defweak)
11036 sym_value = h->root.u.def.value;
11038 sym_value += rel->r_addend;
11040 /* If this branch reloc uses an opd sym, find the code section. */
11041 opd = get_opd_info (sym_sec);
11044 if (h == NULL && opd->adjust != NULL)
11048 adjust = opd->adjust[sym->st_value / 8];
11050 /* Assume deleted functions won't ever be called. */
11052 sym_value += adjust;
11055 dest = opd_entry_value (sym_sec, sym_value,
11056 &sym_sec, NULL, FALSE);
11057 if (dest == (bfd_vma) -1)
11062 + sym_sec->output_offset
11063 + sym_sec->output_section->vma);
11065 /* Ignore branch to self. */
11066 if (sym_sec == isec)
11069 /* If the called function uses the toc, we need a stub. */
11070 if (sym_sec->has_toc_reloc
11071 || sym_sec->makes_toc_func_call)
11077 /* Assume any branch that needs a long branch stub might in fact
11078 need a plt_branch stub. A plt_branch stub uses r2. */
11079 else if (dest - (isec->output_offset
11080 + isec->output_section->vma
11081 + rel->r_offset) + (1 << 25) >= (2 << 25))
11087 /* If calling back to a section in the process of being
11088 tested, we can't say for sure that no toc adjusting stubs
11089 are needed, so don't return zero. */
11090 else if (sym_sec->call_check_in_progress)
11093 /* Branches to another section that itself doesn't have any TOC
11094 references are OK. Recursively call ourselves to check. */
11095 else if (!sym_sec->call_check_done)
11099 /* Mark current section as indeterminate, so that other
11100 sections that call back to current won't be marked as
11102 isec->call_check_in_progress = 1;
11103 recur = toc_adjusting_stub_needed (info, sym_sec);
11104 isec->call_check_in_progress = 0;
11115 if (local_syms != NULL
11116 && (elf_symtab_hdr (isec->owner).contents
11117 != (unsigned char *) local_syms))
11119 if (elf_section_data (isec)->relocs != relstart)
11124 && isec->map_head.s != NULL
11125 && (strcmp (isec->output_section->name, ".init") == 0
11126 || strcmp (isec->output_section->name, ".fini") == 0))
11128 if (isec->map_head.s->has_toc_reloc
11129 || isec->map_head.s->makes_toc_func_call)
11131 else if (!isec->map_head.s->call_check_done)
11134 isec->call_check_in_progress = 1;
11135 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11136 isec->call_check_in_progress = 0;
11143 isec->makes_toc_func_call = 1;
11148 /* The linker repeatedly calls this function for each input section,
11149 in the order that input sections are linked into output sections.
11150 Build lists of input sections to determine groupings between which
11151 we may insert linker stubs. */
11154 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11156 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11161 if ((isec->output_section->flags & SEC_CODE) != 0
11162 && isec->output_section->index <= htab->top_index)
11164 asection **list = htab->input_list + isec->output_section->index;
11165 /* Steal the link_sec pointer for our list. */
11166 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11167 /* This happens to make the list in reverse order,
11168 which is what we want. */
11169 PREV_SEC (isec) = *list;
11173 if (htab->multi_toc_needed)
11175 /* If a code section has a function that uses the TOC then we need
11176 to use the right TOC (obviously). Also, make sure that .opd gets
11177 the correct TOC value for R_PPC64_TOC relocs that don't have or
11178 can't find their function symbol (shouldn't ever happen now).
11179 Also specially treat .fixup for the linux kernel. .fixup
11180 contains branches, but only back to the function that hit an
11182 if (isec->has_toc_reloc
11183 || (isec->flags & SEC_CODE) == 0
11184 || strcmp (isec->name, ".fixup") == 0)
11186 if (elf_gp (isec->owner) != 0)
11187 htab->toc_curr = elf_gp (isec->owner);
11191 if (!isec->call_check_done
11192 && toc_adjusting_stub_needed (info, isec) < 0)
11194 /* If we make a local call from this section, ie. a branch
11195 without a following nop, then we have no place to put a
11196 toc restoring insn. We must use the same toc group as
11198 Testing makes_toc_func_call actually tests for *any*
11199 calls to functions that need a good toc pointer. A more
11200 precise test would be better, as this one will set
11201 incorrect values for pasted .init/.fini fragments.
11202 (Fixed later in check_pasted_section.) */
11203 if (isec->makes_toc_func_call
11204 && elf_gp (isec->owner) != 0)
11205 htab->toc_curr = elf_gp (isec->owner);
11209 /* Functions that don't use the TOC can belong in any TOC group.
11210 Use the last TOC base. */
11211 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11215 /* Check that all .init and .fini sections use the same toc, if they
11216 have toc relocs. */
11219 check_pasted_section (struct bfd_link_info *info, const char *name)
11221 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11225 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11226 bfd_vma toc_off = 0;
11229 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11230 if (i->has_toc_reloc)
11233 toc_off = htab->stub_group[i->id].toc_off;
11234 else if (toc_off != htab->stub_group[i->id].toc_off)
11239 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11240 if (i->makes_toc_func_call)
11242 toc_off = htab->stub_group[i->id].toc_off;
11246 /* Make sure the whole pasted function uses the same toc offset. */
11248 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11249 htab->stub_group[i->id].toc_off = toc_off;
11255 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11257 return (check_pasted_section (info, ".init")
11258 & check_pasted_section (info, ".fini"));
11261 /* See whether we can group stub sections together. Grouping stub
11262 sections may result in fewer stubs. More importantly, we need to
11263 put all .init* and .fini* stubs at the beginning of the .init or
11264 .fini output sections respectively, because glibc splits the
11265 _init and _fini functions into multiple parts. Putting a stub in
11266 the middle of a function is not a good idea. */
11269 group_sections (struct ppc_link_hash_table *htab,
11270 bfd_size_type stub_group_size,
11271 bfd_boolean stubs_always_before_branch)
11274 bfd_size_type stub14_group_size;
11275 bfd_boolean suppress_size_errors;
11277 suppress_size_errors = FALSE;
11278 stub14_group_size = stub_group_size;
11279 if (stub_group_size == 1)
11281 /* Default values. */
11282 if (stubs_always_before_branch)
11284 stub_group_size = 0x1e00000;
11285 stub14_group_size = 0x7800;
11289 stub_group_size = 0x1c00000;
11290 stub14_group_size = 0x7000;
11292 suppress_size_errors = TRUE;
11295 list = htab->input_list + htab->top_index;
11298 asection *tail = *list;
11299 while (tail != NULL)
11303 bfd_size_type total;
11304 bfd_boolean big_sec;
11308 total = tail->size;
11309 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11310 && ppc64_elf_section_data (tail)->has_14bit_branch
11311 ? stub14_group_size : stub_group_size);
11312 if (big_sec && !suppress_size_errors)
11313 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11314 tail->owner, tail);
11315 curr_toc = htab->stub_group[tail->id].toc_off;
11317 while ((prev = PREV_SEC (curr)) != NULL
11318 && ((total += curr->output_offset - prev->output_offset)
11319 < (ppc64_elf_section_data (prev) != NULL
11320 && ppc64_elf_section_data (prev)->has_14bit_branch
11321 ? stub14_group_size : stub_group_size))
11322 && htab->stub_group[prev->id].toc_off == curr_toc)
11325 /* OK, the size from the start of CURR to the end is less
11326 than stub_group_size and thus can be handled by one stub
11327 section. (or the tail section is itself larger than
11328 stub_group_size, in which case we may be toast.) We
11329 should really be keeping track of the total size of stubs
11330 added here, as stubs contribute to the final output
11331 section size. That's a little tricky, and this way will
11332 only break if stubs added make the total size more than
11333 2^25, ie. for the default stub_group_size, if stubs total
11334 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11337 prev = PREV_SEC (tail);
11338 /* Set up this stub group. */
11339 htab->stub_group[tail->id].link_sec = curr;
11341 while (tail != curr && (tail = prev) != NULL);
11343 /* But wait, there's more! Input sections up to stub_group_size
11344 bytes before the stub section can be handled by it too.
11345 Don't do this if we have a really large section after the
11346 stubs, as adding more stubs increases the chance that
11347 branches may not reach into the stub section. */
11348 if (!stubs_always_before_branch && !big_sec)
11351 while (prev != NULL
11352 && ((total += tail->output_offset - prev->output_offset)
11353 < (ppc64_elf_section_data (prev) != NULL
11354 && ppc64_elf_section_data (prev)->has_14bit_branch
11355 ? stub14_group_size : stub_group_size))
11356 && htab->stub_group[prev->id].toc_off == curr_toc)
11359 prev = PREV_SEC (tail);
11360 htab->stub_group[tail->id].link_sec = curr;
11366 while (list-- != htab->input_list);
11367 free (htab->input_list);
11371 static const unsigned char glink_eh_frame_cie[] =
11373 0, 0, 0, 16, /* length. */
11374 0, 0, 0, 0, /* id. */
11375 1, /* CIE version. */
11376 'z', 'R', 0, /* Augmentation string. */
11377 4, /* Code alignment. */
11378 0x78, /* Data alignment. */
11380 1, /* Augmentation size. */
11381 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11382 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11385 /* Stripping output sections is normally done before dynamic section
11386 symbols have been allocated. This function is called later, and
11387 handles cases like htab->brlt which is mapped to its own output
11391 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11393 if (isec->size == 0
11394 && isec->output_section->size == 0
11395 && !(isec->output_section->flags & SEC_KEEP)
11396 && !bfd_section_removed_from_list (info->output_bfd,
11397 isec->output_section)
11398 && elf_section_data (isec->output_section)->dynindx == 0)
11400 isec->output_section->flags |= SEC_EXCLUDE;
11401 bfd_section_list_remove (info->output_bfd, isec->output_section);
11402 info->output_bfd->section_count--;
11406 /* Determine and set the size of the stub section for a final link.
11408 The basic idea here is to examine all the relocations looking for
11409 PC-relative calls to a target that is unreachable with a "bl"
11413 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11414 bfd_boolean plt_static_chain, int plt_thread_safe,
11415 int plt_stub_align)
11417 bfd_size_type stub_group_size;
11418 bfd_boolean stubs_always_before_branch;
11419 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11424 htab->plt_static_chain = plt_static_chain;
11425 htab->plt_stub_align = plt_stub_align;
11426 if (plt_thread_safe == -1 && !info->executable)
11427 plt_thread_safe = 1;
11428 if (plt_thread_safe == -1)
11430 static const char *const thread_starter[] =
11434 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11436 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11437 "mq_notify", "create_timer",
11441 "GOMP_parallel_start",
11442 "GOMP_parallel_loop_static_start",
11443 "GOMP_parallel_loop_dynamic_start",
11444 "GOMP_parallel_loop_guided_start",
11445 "GOMP_parallel_loop_runtime_start",
11446 "GOMP_parallel_sections_start",
11450 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11452 struct elf_link_hash_entry *h;
11453 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11454 FALSE, FALSE, TRUE);
11455 plt_thread_safe = h != NULL && h->ref_regular;
11456 if (plt_thread_safe)
11460 htab->plt_thread_safe = plt_thread_safe;
11461 stubs_always_before_branch = group_size < 0;
11462 if (group_size < 0)
11463 stub_group_size = -group_size;
11465 stub_group_size = group_size;
11467 group_sections (htab, stub_group_size, stubs_always_before_branch);
11472 unsigned int bfd_indx;
11473 asection *stub_sec;
11475 htab->stub_iteration += 1;
11477 for (input_bfd = info->input_bfds, bfd_indx = 0;
11479 input_bfd = input_bfd->link_next, bfd_indx++)
11481 Elf_Internal_Shdr *symtab_hdr;
11483 Elf_Internal_Sym *local_syms = NULL;
11485 if (!is_ppc64_elf (input_bfd))
11488 /* We'll need the symbol table in a second. */
11489 symtab_hdr = &elf_symtab_hdr (input_bfd);
11490 if (symtab_hdr->sh_info == 0)
11493 /* Walk over each section attached to the input bfd. */
11494 for (section = input_bfd->sections;
11496 section = section->next)
11498 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11500 /* If there aren't any relocs, then there's nothing more
11502 if ((section->flags & SEC_RELOC) == 0
11503 || (section->flags & SEC_ALLOC) == 0
11504 || (section->flags & SEC_LOAD) == 0
11505 || (section->flags & SEC_CODE) == 0
11506 || section->reloc_count == 0)
11509 /* If this section is a link-once section that will be
11510 discarded, then don't create any stubs. */
11511 if (section->output_section == NULL
11512 || section->output_section->owner != info->output_bfd)
11515 /* Get the relocs. */
11517 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11518 info->keep_memory);
11519 if (internal_relocs == NULL)
11520 goto error_ret_free_local;
11522 /* Now examine each relocation. */
11523 irela = internal_relocs;
11524 irelaend = irela + section->reloc_count;
11525 for (; irela < irelaend; irela++)
11527 enum elf_ppc64_reloc_type r_type;
11528 unsigned int r_indx;
11529 enum ppc_stub_type stub_type;
11530 struct ppc_stub_hash_entry *stub_entry;
11531 asection *sym_sec, *code_sec;
11532 bfd_vma sym_value, code_value;
11533 bfd_vma destination;
11534 bfd_boolean ok_dest;
11535 struct ppc_link_hash_entry *hash;
11536 struct ppc_link_hash_entry *fdh;
11537 struct elf_link_hash_entry *h;
11538 Elf_Internal_Sym *sym;
11540 const asection *id_sec;
11541 struct _opd_sec_data *opd;
11542 struct plt_entry *plt_ent;
11544 r_type = ELF64_R_TYPE (irela->r_info);
11545 r_indx = ELF64_R_SYM (irela->r_info);
11547 if (r_type >= R_PPC64_max)
11549 bfd_set_error (bfd_error_bad_value);
11550 goto error_ret_free_internal;
11553 /* Only look for stubs on branch instructions. */
11554 if (r_type != R_PPC64_REL24
11555 && r_type != R_PPC64_REL14
11556 && r_type != R_PPC64_REL14_BRTAKEN
11557 && r_type != R_PPC64_REL14_BRNTAKEN)
11560 /* Now determine the call target, its name, value,
11562 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11563 r_indx, input_bfd))
11564 goto error_ret_free_internal;
11565 hash = (struct ppc_link_hash_entry *) h;
11572 sym_value = sym->st_value;
11575 else if (hash->elf.root.type == bfd_link_hash_defined
11576 || hash->elf.root.type == bfd_link_hash_defweak)
11578 sym_value = hash->elf.root.u.def.value;
11579 if (sym_sec->output_section != NULL)
11582 else if (hash->elf.root.type == bfd_link_hash_undefweak
11583 || hash->elf.root.type == bfd_link_hash_undefined)
11585 /* Recognise an old ABI func code entry sym, and
11586 use the func descriptor sym instead if it is
11588 if (hash->elf.root.root.string[0] == '.'
11589 && (fdh = lookup_fdh (hash, htab)) != NULL)
11591 if (fdh->elf.root.type == bfd_link_hash_defined
11592 || fdh->elf.root.type == bfd_link_hash_defweak)
11594 sym_sec = fdh->elf.root.u.def.section;
11595 sym_value = fdh->elf.root.u.def.value;
11596 if (sym_sec->output_section != NULL)
11605 bfd_set_error (bfd_error_bad_value);
11606 goto error_ret_free_internal;
11612 sym_value += irela->r_addend;
11613 destination = (sym_value
11614 + sym_sec->output_offset
11615 + sym_sec->output_section->vma);
11618 code_sec = sym_sec;
11619 code_value = sym_value;
11620 opd = get_opd_info (sym_sec);
11625 if (hash == NULL && opd->adjust != NULL)
11627 long adjust = opd->adjust[sym_value / 8];
11630 code_value += adjust;
11631 sym_value += adjust;
11633 dest = opd_entry_value (sym_sec, sym_value,
11634 &code_sec, &code_value, FALSE);
11635 if (dest != (bfd_vma) -1)
11637 destination = dest;
11640 /* Fixup old ABI sym to point at code
11642 hash->elf.root.type = bfd_link_hash_defweak;
11643 hash->elf.root.u.def.section = code_sec;
11644 hash->elf.root.u.def.value = code_value;
11649 /* Determine what (if any) linker stub is needed. */
11651 stub_type = ppc_type_of_stub (section, irela, &hash,
11652 &plt_ent, destination);
11654 if (stub_type != ppc_stub_plt_call)
11656 /* Check whether we need a TOC adjusting stub.
11657 Since the linker pastes together pieces from
11658 different object files when creating the
11659 _init and _fini functions, it may be that a
11660 call to what looks like a local sym is in
11661 fact a call needing a TOC adjustment. */
11662 if (code_sec != NULL
11663 && code_sec->output_section != NULL
11664 && (htab->stub_group[code_sec->id].toc_off
11665 != htab->stub_group[section->id].toc_off)
11666 && (code_sec->has_toc_reloc
11667 || code_sec->makes_toc_func_call))
11668 stub_type = ppc_stub_long_branch_r2off;
11671 if (stub_type == ppc_stub_none)
11674 /* __tls_get_addr calls might be eliminated. */
11675 if (stub_type != ppc_stub_plt_call
11677 && (hash == htab->tls_get_addr
11678 || hash == htab->tls_get_addr_fd)
11679 && section->has_tls_reloc
11680 && irela != internal_relocs)
11682 /* Get tls info. */
11683 unsigned char *tls_mask;
11685 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11686 irela - 1, input_bfd))
11687 goto error_ret_free_internal;
11688 if (*tls_mask != 0)
11692 if (stub_type == ppc_stub_plt_call
11693 && irela + 1 < irelaend
11694 && irela[1].r_offset == irela->r_offset + 4
11695 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
11697 if (!tocsave_find (htab, INSERT,
11698 &local_syms, irela + 1, input_bfd))
11699 goto error_ret_free_internal;
11701 else if (stub_type == ppc_stub_plt_call)
11702 stub_type = ppc_stub_plt_call_r2save;
11704 /* Support for grouping stub sections. */
11705 id_sec = htab->stub_group[section->id].link_sec;
11707 /* Get the name of this stub. */
11708 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11710 goto error_ret_free_internal;
11712 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11713 stub_name, FALSE, FALSE);
11714 if (stub_entry != NULL)
11716 /* The proper stub has already been created. */
11718 if (stub_type == ppc_stub_plt_call_r2save)
11719 stub_entry->stub_type = stub_type;
11723 stub_entry = ppc_add_stub (stub_name, section, info);
11724 if (stub_entry == NULL)
11727 error_ret_free_internal:
11728 if (elf_section_data (section)->relocs == NULL)
11729 free (internal_relocs);
11730 error_ret_free_local:
11731 if (local_syms != NULL
11732 && (symtab_hdr->contents
11733 != (unsigned char *) local_syms))
11738 stub_entry->stub_type = stub_type;
11739 if (stub_type != ppc_stub_plt_call
11740 && stub_type != ppc_stub_plt_call_r2save)
11742 stub_entry->target_value = code_value;
11743 stub_entry->target_section = code_sec;
11747 stub_entry->target_value = sym_value;
11748 stub_entry->target_section = sym_sec;
11750 stub_entry->h = hash;
11751 stub_entry->plt_ent = plt_ent;
11753 if (stub_entry->h != NULL)
11754 htab->stub_globals += 1;
11757 /* We're done with the internal relocs, free them. */
11758 if (elf_section_data (section)->relocs != internal_relocs)
11759 free (internal_relocs);
11762 if (local_syms != NULL
11763 && symtab_hdr->contents != (unsigned char *) local_syms)
11765 if (!info->keep_memory)
11768 symtab_hdr->contents = (unsigned char *) local_syms;
11772 /* We may have added some stubs. Find out the new size of the
11774 for (stub_sec = htab->stub_bfd->sections;
11776 stub_sec = stub_sec->next)
11777 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11779 stub_sec->rawsize = stub_sec->size;
11780 stub_sec->size = 0;
11781 stub_sec->reloc_count = 0;
11782 stub_sec->flags &= ~SEC_RELOC;
11785 htab->brlt->size = 0;
11786 htab->brlt->reloc_count = 0;
11787 htab->brlt->flags &= ~SEC_RELOC;
11788 if (htab->relbrlt != NULL)
11789 htab->relbrlt->size = 0;
11791 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11793 if (info->emitrelocations
11794 && htab->glink != NULL && htab->glink->size != 0)
11796 htab->glink->reloc_count = 1;
11797 htab->glink->flags |= SEC_RELOC;
11800 if (htab->glink_eh_frame != NULL
11801 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
11802 && htab->glink_eh_frame->output_section->size != 0)
11804 size_t size = 0, align;
11806 for (stub_sec = htab->stub_bfd->sections;
11808 stub_sec = stub_sec->next)
11809 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11811 if (htab->glink != NULL && htab->glink->size != 0)
11814 size += sizeof (glink_eh_frame_cie);
11816 align <<= htab->glink_eh_frame->output_section->alignment_power;
11818 size = (size + align) & ~align;
11819 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11820 htab->glink_eh_frame->size = size;
11823 if (htab->plt_stub_align != 0)
11824 for (stub_sec = htab->stub_bfd->sections;
11826 stub_sec = stub_sec->next)
11827 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11828 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
11829 & (-1 << htab->plt_stub_align));
11831 for (stub_sec = htab->stub_bfd->sections;
11833 stub_sec = stub_sec->next)
11834 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11835 && stub_sec->rawsize != stub_sec->size)
11838 /* Exit from this loop when no stubs have been added, and no stubs
11839 have changed size. */
11840 if (stub_sec == NULL
11841 && (htab->glink_eh_frame == NULL
11842 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
11845 /* Ask the linker to do its stuff. */
11846 (*htab->layout_sections_again) ();
11849 maybe_strip_output (info, htab->brlt);
11850 if (htab->glink_eh_frame != NULL)
11851 maybe_strip_output (info, htab->glink_eh_frame);
11856 /* Called after we have determined section placement. If sections
11857 move, we'll be called again. Provide a value for TOCstart. */
11860 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
11865 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11866 order. The TOC starts where the first of these sections starts. */
11867 s = bfd_get_section_by_name (obfd, ".got");
11868 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11869 s = bfd_get_section_by_name (obfd, ".toc");
11870 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11871 s = bfd_get_section_by_name (obfd, ".tocbss");
11872 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11873 s = bfd_get_section_by_name (obfd, ".plt");
11874 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11876 /* This may happen for
11877 o references to TOC base (SYM@toc / TOC[tc0]) without a
11879 o bad linker script
11880 o --gc-sections and empty TOC sections
11882 FIXME: Warn user? */
11884 /* Look for a likely section. We probably won't even be
11886 for (s = obfd->sections; s != NULL; s = s->next)
11887 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11889 == (SEC_ALLOC | SEC_SMALL_DATA))
11892 for (s = obfd->sections; s != NULL; s = s->next)
11893 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11894 == (SEC_ALLOC | SEC_SMALL_DATA))
11897 for (s = obfd->sections; s != NULL; s = s->next)
11898 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11902 for (s = obfd->sections; s != NULL; s = s->next)
11903 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11909 TOCstart = s->output_section->vma + s->output_offset;
11911 _bfd_set_gp_value (obfd, TOCstart);
11913 if (info != NULL && s != NULL && is_ppc64_elf (obfd))
11915 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11918 && htab->elf.hgot != NULL)
11920 htab->elf.hgot->root.type = bfd_link_hash_defined;
11921 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
11922 htab->elf.hgot->root.u.def.section = s;
11928 /* Build all the stubs associated with the current output file.
11929 The stubs are kept in a hash table attached to the main linker
11930 hash table. This function is called via gldelf64ppc_finish. */
11933 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11934 struct bfd_link_info *info,
11937 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11938 asection *stub_sec;
11940 int stub_sec_count = 0;
11945 htab->emit_stub_syms = emit_stub_syms;
11947 /* Allocate memory to hold the linker stubs. */
11948 for (stub_sec = htab->stub_bfd->sections;
11950 stub_sec = stub_sec->next)
11951 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11952 && stub_sec->size != 0)
11954 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11955 if (stub_sec->contents == NULL)
11957 /* We want to check that built size is the same as calculated
11958 size. rawsize is a convenient location to use. */
11959 stub_sec->rawsize = stub_sec->size;
11960 stub_sec->size = 0;
11963 if (htab->glink != NULL && htab->glink->size != 0)
11968 /* Build the .glink plt call stub. */
11969 if (htab->emit_stub_syms)
11971 struct elf_link_hash_entry *h;
11972 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11973 TRUE, FALSE, FALSE);
11976 if (h->root.type == bfd_link_hash_new)
11978 h->root.type = bfd_link_hash_defined;
11979 h->root.u.def.section = htab->glink;
11980 h->root.u.def.value = 8;
11981 h->ref_regular = 1;
11982 h->def_regular = 1;
11983 h->ref_regular_nonweak = 1;
11984 h->forced_local = 1;
11988 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11989 if (info->emitrelocations)
11991 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11994 r->r_offset = (htab->glink->output_offset
11995 + htab->glink->output_section->vma);
11996 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11997 r->r_addend = plt0;
11999 p = htab->glink->contents;
12000 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12001 bfd_put_64 (htab->glink->owner, plt0, p);
12003 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12005 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12007 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12009 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
12011 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12013 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
12015 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
12017 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
12019 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
12021 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
12023 bfd_put_32 (htab->glink->owner, BCTR, p);
12025 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12027 bfd_put_32 (htab->glink->owner, NOP, p);
12031 /* Build the .glink lazy link call stubs. */
12033 while (p < htab->glink->contents + htab->glink->size)
12037 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12042 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12044 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
12047 bfd_put_32 (htab->glink->owner,
12048 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12052 htab->glink->rawsize = p - htab->glink->contents;
12055 if (htab->brlt->size != 0)
12057 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12059 if (htab->brlt->contents == NULL)
12062 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12064 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12065 htab->relbrlt->size);
12066 if (htab->relbrlt->contents == NULL)
12070 if (htab->glink_eh_frame != NULL
12071 && htab->glink_eh_frame->size != 0)
12074 bfd_byte *last_fde;
12075 size_t last_fde_len, size, align, pad;
12077 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12080 htab->glink_eh_frame->contents = p;
12083 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12085 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12086 /* CIE length (rewrite in case little-endian). */
12087 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12088 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12089 p += sizeof (glink_eh_frame_cie);
12091 for (stub_sec = htab->stub_bfd->sections;
12093 stub_sec = stub_sec->next)
12094 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12099 bfd_put_32 (htab->elf.dynobj, 16, p);
12102 val = p - htab->glink_eh_frame->contents;
12103 bfd_put_32 (htab->elf.dynobj, val, p);
12105 /* Offset to stub section. */
12106 val = (stub_sec->output_section->vma
12107 + stub_sec->output_offset);
12108 val -= (htab->glink_eh_frame->output_section->vma
12109 + htab->glink_eh_frame->output_offset);
12110 val -= p - htab->glink_eh_frame->contents;
12111 if (val + 0x80000000 > 0xffffffff)
12113 info->callbacks->einfo
12114 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12118 bfd_put_32 (htab->elf.dynobj, val, p);
12120 /* stub section size. */
12121 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12123 /* Augmentation. */
12128 if (htab->glink != NULL && htab->glink->size != 0)
12133 bfd_put_32 (htab->elf.dynobj, 20, p);
12136 val = p - htab->glink_eh_frame->contents;
12137 bfd_put_32 (htab->elf.dynobj, val, p);
12139 /* Offset to .glink. */
12140 val = (htab->glink->output_section->vma
12141 + htab->glink->output_offset
12143 val -= (htab->glink_eh_frame->output_section->vma
12144 + htab->glink_eh_frame->output_offset);
12145 val -= p - htab->glink_eh_frame->contents;
12146 if (val + 0x80000000 > 0xffffffff)
12148 info->callbacks->einfo
12149 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12150 htab->glink->name);
12153 bfd_put_32 (htab->elf.dynobj, val, p);
12156 bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
12158 /* Augmentation. */
12161 *p++ = DW_CFA_advance_loc + 1;
12162 *p++ = DW_CFA_register;
12165 *p++ = DW_CFA_advance_loc + 4;
12166 *p++ = DW_CFA_restore_extended;
12169 /* Subsume any padding into the last FDE if user .eh_frame
12170 sections are aligned more than glink_eh_frame. Otherwise any
12171 zero padding will be seen as a terminator. */
12172 size = p - htab->glink_eh_frame->contents;
12174 align <<= htab->glink_eh_frame->output_section->alignment_power;
12176 pad = ((size + align) & ~align) - size;
12177 htab->glink_eh_frame->size = size + pad;
12178 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12181 /* Build the stubs as directed by the stub hash table. */
12182 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12184 if (htab->relbrlt != NULL)
12185 htab->relbrlt->reloc_count = 0;
12187 if (htab->plt_stub_align != 0)
12188 for (stub_sec = htab->stub_bfd->sections;
12190 stub_sec = stub_sec->next)
12191 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12192 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12193 & (-1 << htab->plt_stub_align));
12195 for (stub_sec = htab->stub_bfd->sections;
12197 stub_sec = stub_sec->next)
12198 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12200 stub_sec_count += 1;
12201 if (stub_sec->rawsize != stub_sec->size)
12205 if (stub_sec != NULL
12206 || htab->glink->rawsize != htab->glink->size
12207 || (htab->glink_eh_frame != NULL
12208 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12210 htab->stub_error = TRUE;
12211 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12214 if (htab->stub_error)
12219 *stats = bfd_malloc (500);
12220 if (*stats == NULL)
12223 sprintf (*stats, _("linker stubs in %u group%s\n"
12225 " toc adjust %lu\n"
12226 " long branch %lu\n"
12227 " long toc adj %lu\n"
12229 " plt call toc %lu"),
12231 stub_sec_count == 1 ? "" : "s",
12232 htab->stub_count[ppc_stub_long_branch - 1],
12233 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12234 htab->stub_count[ppc_stub_plt_branch - 1],
12235 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12236 htab->stub_count[ppc_stub_plt_call - 1],
12237 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12242 /* This function undoes the changes made by add_symbol_adjust. */
12245 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12247 struct ppc_link_hash_entry *eh;
12249 if (h->root.type == bfd_link_hash_indirect)
12252 eh = (struct ppc_link_hash_entry *) h;
12253 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12256 eh->elf.root.type = bfd_link_hash_undefined;
12261 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12263 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12266 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12269 /* What to do when ld finds relocations against symbols defined in
12270 discarded sections. */
12272 static unsigned int
12273 ppc64_elf_action_discarded (asection *sec)
12275 if (strcmp (".opd", sec->name) == 0)
12278 if (strcmp (".toc", sec->name) == 0)
12281 if (strcmp (".toc1", sec->name) == 0)
12284 return _bfd_elf_default_action_discarded (sec);
12287 /* The RELOCATE_SECTION function is called by the ELF backend linker
12288 to handle the relocations for a section.
12290 The relocs are always passed as Rela structures; if the section
12291 actually uses Rel structures, the r_addend field will always be
12294 This function is responsible for adjust the section contents as
12295 necessary, and (if using Rela relocs and generating a
12296 relocatable output file) adjusting the reloc addend as
12299 This function does not have to worry about setting the reloc
12300 address or the reloc symbol index.
12302 LOCAL_SYMS is a pointer to the swapped in local symbols.
12304 LOCAL_SECTIONS is an array giving the section in the input file
12305 corresponding to the st_shndx field of each local symbol.
12307 The global hash table entry for the global symbols can be found
12308 via elf_sym_hashes (input_bfd).
12310 When generating relocatable output, this function must handle
12311 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12312 going to be the section symbol corresponding to the output
12313 section, which means that the addend must be adjusted
12317 ppc64_elf_relocate_section (bfd *output_bfd,
12318 struct bfd_link_info *info,
12320 asection *input_section,
12321 bfd_byte *contents,
12322 Elf_Internal_Rela *relocs,
12323 Elf_Internal_Sym *local_syms,
12324 asection **local_sections)
12326 struct ppc_link_hash_table *htab;
12327 Elf_Internal_Shdr *symtab_hdr;
12328 struct elf_link_hash_entry **sym_hashes;
12329 Elf_Internal_Rela *rel;
12330 Elf_Internal_Rela *relend;
12331 Elf_Internal_Rela outrel;
12333 struct got_entry **local_got_ents;
12335 bfd_boolean ret = TRUE;
12336 bfd_boolean is_opd;
12337 /* Assume 'at' branch hints. */
12338 bfd_boolean is_isa_v2 = TRUE;
12339 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12341 /* Initialize howto table if needed. */
12342 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12345 htab = ppc_hash_table (info);
12349 /* Don't relocate stub sections. */
12350 if (input_section->owner == htab->stub_bfd)
12353 BFD_ASSERT (is_ppc64_elf (input_bfd));
12355 local_got_ents = elf_local_got_ents (input_bfd);
12356 TOCstart = elf_gp (output_bfd);
12357 symtab_hdr = &elf_symtab_hdr (input_bfd);
12358 sym_hashes = elf_sym_hashes (input_bfd);
12359 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12362 relend = relocs + input_section->reloc_count;
12363 for (; rel < relend; rel++)
12365 enum elf_ppc64_reloc_type r_type;
12367 bfd_reloc_status_type r;
12368 Elf_Internal_Sym *sym;
12370 struct elf_link_hash_entry *h_elf;
12371 struct ppc_link_hash_entry *h;
12372 struct ppc_link_hash_entry *fdh;
12373 const char *sym_name;
12374 unsigned long r_symndx, toc_symndx;
12375 bfd_vma toc_addend;
12376 unsigned char tls_mask, tls_gd, tls_type;
12377 unsigned char sym_type;
12378 bfd_vma relocation;
12379 bfd_boolean unresolved_reloc;
12380 bfd_boolean warned;
12381 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
12384 struct ppc_stub_hash_entry *stub_entry;
12385 bfd_vma max_br_offset;
12387 const Elf_Internal_Rela orig_rel = *rel;
12389 r_type = ELF64_R_TYPE (rel->r_info);
12390 r_symndx = ELF64_R_SYM (rel->r_info);
12392 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12393 symbol of the previous ADDR64 reloc. The symbol gives us the
12394 proper TOC base to use. */
12395 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12397 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12399 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12405 unresolved_reloc = FALSE;
12408 if (r_symndx < symtab_hdr->sh_info)
12410 /* It's a local symbol. */
12411 struct _opd_sec_data *opd;
12413 sym = local_syms + r_symndx;
12414 sec = local_sections[r_symndx];
12415 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12416 sym_type = ELF64_ST_TYPE (sym->st_info);
12417 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12418 opd = get_opd_info (sec);
12419 if (opd != NULL && opd->adjust != NULL)
12421 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12426 /* If this is a relocation against the opd section sym
12427 and we have edited .opd, adjust the reloc addend so
12428 that ld -r and ld --emit-relocs output is correct.
12429 If it is a reloc against some other .opd symbol,
12430 then the symbol value will be adjusted later. */
12431 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12432 rel->r_addend += adjust;
12434 relocation += adjust;
12440 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12441 r_symndx, symtab_hdr, sym_hashes,
12442 h_elf, sec, relocation,
12443 unresolved_reloc, warned);
12444 sym_name = h_elf->root.root.string;
12445 sym_type = h_elf->type;
12447 && sec->owner == output_bfd
12448 && strcmp (sec->name, ".opd") == 0)
12450 /* This is a symbol defined in a linker script. All
12451 such are defined in output sections, even those
12452 defined by simple assignment from a symbol defined in
12453 an input section. Transfer the symbol to an
12454 appropriate input .opd section, so that a branch to
12455 this symbol will be mapped to the location specified
12456 by the opd entry. */
12457 struct bfd_link_order *lo;
12458 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
12459 if (lo->type == bfd_indirect_link_order)
12461 asection *isec = lo->u.indirect.section;
12462 if (h_elf->root.u.def.value >= isec->output_offset
12463 && h_elf->root.u.def.value < (isec->output_offset
12466 h_elf->root.u.def.value -= isec->output_offset;
12467 h_elf->root.u.def.section = isec;
12474 h = (struct ppc_link_hash_entry *) h_elf;
12476 if (sec != NULL && discarded_section (sec))
12477 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
12479 ppc64_elf_howto_table[r_type], 0,
12482 if (info->relocatable)
12485 if (h != NULL && &h->elf == htab->elf.hgot)
12487 relocation = (TOCstart
12488 + htab->stub_group[input_section->id].toc_off);
12489 sec = bfd_abs_section_ptr;
12490 unresolved_reloc = FALSE;
12493 /* TLS optimizations. Replace instruction sequences and relocs
12494 based on information we collected in tls_optimize. We edit
12495 RELOCS so that --emit-relocs will output something sensible
12496 for the final instruction stream. */
12501 tls_mask = h->tls_mask;
12502 else if (local_got_ents != NULL)
12504 struct plt_entry **local_plt = (struct plt_entry **)
12505 (local_got_ents + symtab_hdr->sh_info);
12506 unsigned char *lgot_masks = (unsigned char *)
12507 (local_plt + symtab_hdr->sh_info);
12508 tls_mask = lgot_masks[r_symndx];
12511 && (r_type == R_PPC64_TLS
12512 || r_type == R_PPC64_TLSGD
12513 || r_type == R_PPC64_TLSLD))
12515 /* Check for toc tls entries. */
12516 unsigned char *toc_tls;
12518 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12519 &local_syms, rel, input_bfd))
12523 tls_mask = *toc_tls;
12526 /* Check that tls relocs are used with tls syms, and non-tls
12527 relocs are used with non-tls syms. */
12528 if (r_symndx != STN_UNDEF
12529 && r_type != R_PPC64_NONE
12531 || h->elf.root.type == bfd_link_hash_defined
12532 || h->elf.root.type == bfd_link_hash_defweak)
12533 && (IS_PPC64_TLS_RELOC (r_type)
12534 != (sym_type == STT_TLS
12535 || (sym_type == STT_SECTION
12536 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
12539 && (r_type == R_PPC64_TLS
12540 || r_type == R_PPC64_TLSGD
12541 || r_type == R_PPC64_TLSLD))
12542 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12545 info->callbacks->einfo
12546 (!IS_PPC64_TLS_RELOC (r_type)
12547 ? _("%P: %H: %s used with TLS symbol `%T'\n")
12548 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
12549 input_bfd, input_section, rel->r_offset,
12550 ppc64_elf_howto_table[r_type]->name,
12554 /* Ensure reloc mapping code below stays sane. */
12555 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
12556 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
12557 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
12558 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
12559 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
12560 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
12561 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
12562 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
12563 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
12564 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
12572 case R_PPC64_LO_DS_OPT:
12573 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12574 if ((insn & (0x3f << 26)) != 58u << 26)
12576 insn += (14u << 26) - (58u << 26);
12577 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12578 r_type = R_PPC64_TOC16_LO;
12579 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12582 case R_PPC64_TOC16:
12583 case R_PPC64_TOC16_LO:
12584 case R_PPC64_TOC16_DS:
12585 case R_PPC64_TOC16_LO_DS:
12587 /* Check for toc tls entries. */
12588 unsigned char *toc_tls;
12591 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12592 &local_syms, rel, input_bfd);
12598 tls_mask = *toc_tls;
12599 if (r_type == R_PPC64_TOC16_DS
12600 || r_type == R_PPC64_TOC16_LO_DS)
12603 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
12608 /* If we found a GD reloc pair, then we might be
12609 doing a GD->IE transition. */
12612 tls_gd = TLS_TPRELGD;
12613 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12616 else if (retval == 3)
12618 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12626 case R_PPC64_GOT_TPREL16_HI:
12627 case R_PPC64_GOT_TPREL16_HA:
12629 && (tls_mask & TLS_TPREL) == 0)
12631 rel->r_offset -= d_offset;
12632 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12633 r_type = R_PPC64_NONE;
12634 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12638 case R_PPC64_GOT_TPREL16_DS:
12639 case R_PPC64_GOT_TPREL16_LO_DS:
12641 && (tls_mask & TLS_TPREL) == 0)
12644 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12646 insn |= 0x3c0d0000; /* addis 0,13,0 */
12647 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12648 r_type = R_PPC64_TPREL16_HA;
12649 if (toc_symndx != 0)
12651 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12652 rel->r_addend = toc_addend;
12653 /* We changed the symbol. Start over in order to
12654 get h, sym, sec etc. right. */
12659 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12665 && (tls_mask & TLS_TPREL) == 0)
12667 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
12668 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
12671 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12672 /* Was PPC64_TLS which sits on insn boundary, now
12673 PPC64_TPREL16_LO which is at low-order half-word. */
12674 rel->r_offset += d_offset;
12675 r_type = R_PPC64_TPREL16_LO;
12676 if (toc_symndx != 0)
12678 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12679 rel->r_addend = toc_addend;
12680 /* We changed the symbol. Start over in order to
12681 get h, sym, sec etc. right. */
12686 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12690 case R_PPC64_GOT_TLSGD16_HI:
12691 case R_PPC64_GOT_TLSGD16_HA:
12692 tls_gd = TLS_TPRELGD;
12693 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12697 case R_PPC64_GOT_TLSLD16_HI:
12698 case R_PPC64_GOT_TLSLD16_HA:
12699 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12702 if ((tls_mask & tls_gd) != 0)
12703 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12704 + R_PPC64_GOT_TPREL16_DS);
12707 rel->r_offset -= d_offset;
12708 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12709 r_type = R_PPC64_NONE;
12711 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12715 case R_PPC64_GOT_TLSGD16:
12716 case R_PPC64_GOT_TLSGD16_LO:
12717 tls_gd = TLS_TPRELGD;
12718 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12722 case R_PPC64_GOT_TLSLD16:
12723 case R_PPC64_GOT_TLSLD16_LO:
12724 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12726 unsigned int insn1, insn2, insn3;
12730 offset = (bfd_vma) -1;
12731 /* If not using the newer R_PPC64_TLSGD/LD to mark
12732 __tls_get_addr calls, we must trust that the call
12733 stays with its arg setup insns, ie. that the next
12734 reloc is the __tls_get_addr call associated with
12735 the current reloc. Edit both insns. */
12736 if (input_section->has_tls_get_addr_call
12737 && rel + 1 < relend
12738 && branch_reloc_hash_match (input_bfd, rel + 1,
12739 htab->tls_get_addr,
12740 htab->tls_get_addr_fd))
12741 offset = rel[1].r_offset;
12742 if ((tls_mask & tls_gd) != 0)
12745 insn1 = bfd_get_32 (output_bfd,
12746 contents + rel->r_offset - d_offset);
12747 insn1 &= (1 << 26) - (1 << 2);
12748 insn1 |= 58 << 26; /* ld */
12749 insn2 = 0x7c636a14; /* add 3,3,13 */
12750 if (offset != (bfd_vma) -1)
12751 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12752 if ((tls_mask & TLS_EXPLICIT) == 0)
12753 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12754 + R_PPC64_GOT_TPREL16_DS);
12756 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12757 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12762 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12763 insn2 = 0x38630000; /* addi 3,3,0 */
12766 /* Was an LD reloc. */
12768 sec = local_sections[toc_symndx];
12770 r_symndx < symtab_hdr->sh_info;
12772 if (local_sections[r_symndx] == sec)
12774 if (r_symndx >= symtab_hdr->sh_info)
12775 r_symndx = STN_UNDEF;
12776 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12777 if (r_symndx != STN_UNDEF)
12778 rel->r_addend -= (local_syms[r_symndx].st_value
12779 + sec->output_offset
12780 + sec->output_section->vma);
12782 else if (toc_symndx != 0)
12784 r_symndx = toc_symndx;
12785 rel->r_addend = toc_addend;
12787 r_type = R_PPC64_TPREL16_HA;
12788 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12789 if (offset != (bfd_vma) -1)
12791 rel[1].r_info = ELF64_R_INFO (r_symndx,
12792 R_PPC64_TPREL16_LO);
12793 rel[1].r_offset = offset + d_offset;
12794 rel[1].r_addend = rel->r_addend;
12797 bfd_put_32 (output_bfd, insn1,
12798 contents + rel->r_offset - d_offset);
12799 if (offset != (bfd_vma) -1)
12801 insn3 = bfd_get_32 (output_bfd,
12802 contents + offset + 4);
12804 || insn3 == CROR_151515 || insn3 == CROR_313131)
12806 rel[1].r_offset += 4;
12807 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12810 bfd_put_32 (output_bfd, insn2, contents + offset);
12812 if ((tls_mask & tls_gd) == 0
12813 && (tls_gd == 0 || toc_symndx != 0))
12815 /* We changed the symbol. Start over in order
12816 to get h, sym, sec etc. right. */
12823 case R_PPC64_TLSGD:
12824 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12826 unsigned int insn2, insn3;
12827 bfd_vma offset = rel->r_offset;
12829 if ((tls_mask & TLS_TPRELGD) != 0)
12832 r_type = R_PPC64_NONE;
12833 insn2 = 0x7c636a14; /* add 3,3,13 */
12838 if (toc_symndx != 0)
12840 r_symndx = toc_symndx;
12841 rel->r_addend = toc_addend;
12843 r_type = R_PPC64_TPREL16_LO;
12844 rel->r_offset = offset + d_offset;
12845 insn2 = 0x38630000; /* addi 3,3,0 */
12847 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12848 /* Zap the reloc on the _tls_get_addr call too. */
12849 BFD_ASSERT (offset == rel[1].r_offset);
12850 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12851 insn3 = bfd_get_32 (output_bfd,
12852 contents + offset + 4);
12854 || insn3 == CROR_151515 || insn3 == CROR_313131)
12856 rel->r_offset += 4;
12857 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12860 bfd_put_32 (output_bfd, insn2, contents + offset);
12861 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12869 case R_PPC64_TLSLD:
12870 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12872 unsigned int insn2, insn3;
12873 bfd_vma offset = rel->r_offset;
12876 sec = local_sections[toc_symndx];
12878 r_symndx < symtab_hdr->sh_info;
12880 if (local_sections[r_symndx] == sec)
12882 if (r_symndx >= symtab_hdr->sh_info)
12883 r_symndx = STN_UNDEF;
12884 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12885 if (r_symndx != STN_UNDEF)
12886 rel->r_addend -= (local_syms[r_symndx].st_value
12887 + sec->output_offset
12888 + sec->output_section->vma);
12890 r_type = R_PPC64_TPREL16_LO;
12891 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12892 rel->r_offset = offset + d_offset;
12893 /* Zap the reloc on the _tls_get_addr call too. */
12894 BFD_ASSERT (offset == rel[1].r_offset);
12895 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12896 insn2 = 0x38630000; /* addi 3,3,0 */
12897 insn3 = bfd_get_32 (output_bfd,
12898 contents + offset + 4);
12900 || insn3 == CROR_151515 || insn3 == CROR_313131)
12902 rel->r_offset += 4;
12903 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12906 bfd_put_32 (output_bfd, insn2, contents + offset);
12912 case R_PPC64_DTPMOD64:
12913 if (rel + 1 < relend
12914 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12915 && rel[1].r_offset == rel->r_offset + 8)
12917 if ((tls_mask & TLS_GD) == 0)
12919 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12920 if ((tls_mask & TLS_TPRELGD) != 0)
12921 r_type = R_PPC64_TPREL64;
12924 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12925 r_type = R_PPC64_NONE;
12927 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12932 if ((tls_mask & TLS_LD) == 0)
12934 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12935 r_type = R_PPC64_NONE;
12936 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12941 case R_PPC64_TPREL64:
12942 if ((tls_mask & TLS_TPREL) == 0)
12944 r_type = R_PPC64_NONE;
12945 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12950 /* Handle other relocations that tweak non-addend part of insn. */
12952 max_br_offset = 1 << 25;
12953 addend = rel->r_addend;
12954 reloc_dest = DEST_NORMAL;
12960 case R_PPC64_TOCSAVE:
12961 if (relocation + addend == (rel->r_offset
12962 + input_section->output_offset
12963 + input_section->output_section->vma)
12964 && tocsave_find (htab, NO_INSERT,
12965 &local_syms, rel, input_bfd))
12967 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
12969 || insn == CROR_151515 || insn == CROR_313131)
12970 bfd_put_32 (input_bfd, STD_R2_40R1,
12971 contents + rel->r_offset);
12975 /* Branch taken prediction relocations. */
12976 case R_PPC64_ADDR14_BRTAKEN:
12977 case R_PPC64_REL14_BRTAKEN:
12978 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12981 /* Branch not taken prediction relocations. */
12982 case R_PPC64_ADDR14_BRNTAKEN:
12983 case R_PPC64_REL14_BRNTAKEN:
12984 insn |= bfd_get_32 (output_bfd,
12985 contents + rel->r_offset) & ~(0x01 << 21);
12988 case R_PPC64_REL14:
12989 max_br_offset = 1 << 15;
12992 case R_PPC64_REL24:
12993 /* Calls to functions with a different TOC, such as calls to
12994 shared objects, need to alter the TOC pointer. This is
12995 done using a linkage stub. A REL24 branching to these
12996 linkage stubs needs to be followed by a nop, as the nop
12997 will be replaced with an instruction to restore the TOC
13002 && h->oh->is_func_descriptor)
13003 fdh = ppc_follow_link (h->oh);
13004 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13006 if (stub_entry != NULL
13007 && (stub_entry->stub_type == ppc_stub_plt_call
13008 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13009 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13010 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13012 bfd_boolean can_plt_call = FALSE;
13014 /* All of these stubs will modify r2, so there must be a
13015 branch and link followed by a nop. The nop is
13016 replaced by an insn to restore r2. */
13017 if (rel->r_offset + 8 <= input_section->size)
13021 br = bfd_get_32 (input_bfd,
13022 contents + rel->r_offset);
13027 nop = bfd_get_32 (input_bfd,
13028 contents + rel->r_offset + 4);
13030 || nop == CROR_151515 || nop == CROR_313131)
13033 && (h == htab->tls_get_addr_fd
13034 || h == htab->tls_get_addr)
13035 && !htab->no_tls_get_addr_opt)
13037 /* Special stub used, leave nop alone. */
13040 bfd_put_32 (input_bfd, LD_R2_40R1,
13041 contents + rel->r_offset + 4);
13042 can_plt_call = TRUE;
13047 if (!can_plt_call && h != NULL)
13049 const char *name = h->elf.root.root.string;
13054 if (strncmp (name, "__libc_start_main", 17) == 0
13055 && (name[17] == 0 || name[17] == '@'))
13057 /* Allow crt1 branch to go via a toc adjusting
13058 stub. Other calls that never return could do
13059 the same, if we could detect such. */
13060 can_plt_call = TRUE;
13066 /* g++ as of 20130507 emits self-calls without a
13067 following nop. This is arguably wrong since we
13068 have conflicting information. On the one hand a
13069 global symbol and on the other a local call
13070 sequence, but don't error for this special case.
13071 It isn't possible to cheaply verify we have
13072 exactly such a call. Allow all calls to the same
13074 asection *code_sec = sec;
13076 if (get_opd_info (sec) != NULL)
13078 bfd_vma off = (relocation + addend
13079 - sec->output_section->vma
13080 - sec->output_offset);
13082 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13084 if (code_sec == input_section)
13085 can_plt_call = TRUE;
13090 info->callbacks->einfo
13091 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13092 "recompile with -fPIC"),
13093 input_bfd, input_section, rel->r_offset, sym_name);
13095 bfd_set_error (bfd_error_bad_value);
13100 && (stub_entry->stub_type == ppc_stub_plt_call
13101 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13102 unresolved_reloc = FALSE;
13105 if ((stub_entry == NULL
13106 || stub_entry->stub_type == ppc_stub_long_branch
13107 || stub_entry->stub_type == ppc_stub_plt_branch)
13108 && get_opd_info (sec) != NULL)
13110 /* The branch destination is the value of the opd entry. */
13111 bfd_vma off = (relocation + addend
13112 - sec->output_section->vma
13113 - sec->output_offset);
13114 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13115 if (dest != (bfd_vma) -1)
13119 reloc_dest = DEST_OPD;
13123 /* If the branch is out of reach we ought to have a long
13125 from = (rel->r_offset
13126 + input_section->output_offset
13127 + input_section->output_section->vma);
13129 if (stub_entry != NULL
13130 && (stub_entry->stub_type == ppc_stub_long_branch
13131 || stub_entry->stub_type == ppc_stub_plt_branch)
13132 && (r_type == R_PPC64_ADDR14_BRTAKEN
13133 || r_type == R_PPC64_ADDR14_BRNTAKEN
13134 || (relocation + addend - from + max_br_offset
13135 < 2 * max_br_offset)))
13136 /* Don't use the stub if this branch is in range. */
13139 if (stub_entry != NULL)
13141 /* Munge up the value and addend so that we call the stub
13142 rather than the procedure directly. */
13143 relocation = (stub_entry->stub_offset
13144 + stub_entry->stub_sec->output_offset
13145 + stub_entry->stub_sec->output_section->vma);
13147 reloc_dest = DEST_STUB;
13149 if ((stub_entry->stub_type == ppc_stub_plt_call
13150 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13151 && (ALWAYS_EMIT_R2SAVE
13152 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13153 && rel + 1 < relend
13154 && rel[1].r_offset == rel->r_offset + 4
13155 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13163 /* Set 'a' bit. This is 0b00010 in BO field for branch
13164 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13165 for branch on CTR insns (BO == 1a00t or 1a01t). */
13166 if ((insn & (0x14 << 21)) == (0x04 << 21))
13167 insn |= 0x02 << 21;
13168 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13169 insn |= 0x08 << 21;
13175 /* Invert 'y' bit if not the default. */
13176 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13177 insn ^= 0x01 << 21;
13180 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13183 /* NOP out calls to undefined weak functions.
13184 We can thus call a weak function without first
13185 checking whether the function is defined. */
13187 && h->elf.root.type == bfd_link_hash_undefweak
13188 && h->elf.dynindx == -1
13189 && r_type == R_PPC64_REL24
13193 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13199 /* Set `addend'. */
13204 info->callbacks->einfo
13205 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13206 input_bfd, (int) r_type, sym_name);
13208 bfd_set_error (bfd_error_bad_value);
13214 case R_PPC64_TLSGD:
13215 case R_PPC64_TLSLD:
13216 case R_PPC64_TOCSAVE:
13217 case R_PPC64_GNU_VTINHERIT:
13218 case R_PPC64_GNU_VTENTRY:
13221 /* GOT16 relocations. Like an ADDR16 using the symbol's
13222 address in the GOT as relocation value instead of the
13223 symbol's value itself. Also, create a GOT entry for the
13224 symbol and put the symbol value there. */
13225 case R_PPC64_GOT_TLSGD16:
13226 case R_PPC64_GOT_TLSGD16_LO:
13227 case R_PPC64_GOT_TLSGD16_HI:
13228 case R_PPC64_GOT_TLSGD16_HA:
13229 tls_type = TLS_TLS | TLS_GD;
13232 case R_PPC64_GOT_TLSLD16:
13233 case R_PPC64_GOT_TLSLD16_LO:
13234 case R_PPC64_GOT_TLSLD16_HI:
13235 case R_PPC64_GOT_TLSLD16_HA:
13236 tls_type = TLS_TLS | TLS_LD;
13239 case R_PPC64_GOT_TPREL16_DS:
13240 case R_PPC64_GOT_TPREL16_LO_DS:
13241 case R_PPC64_GOT_TPREL16_HI:
13242 case R_PPC64_GOT_TPREL16_HA:
13243 tls_type = TLS_TLS | TLS_TPREL;
13246 case R_PPC64_GOT_DTPREL16_DS:
13247 case R_PPC64_GOT_DTPREL16_LO_DS:
13248 case R_PPC64_GOT_DTPREL16_HI:
13249 case R_PPC64_GOT_DTPREL16_HA:
13250 tls_type = TLS_TLS | TLS_DTPREL;
13253 case R_PPC64_GOT16:
13254 case R_PPC64_GOT16_LO:
13255 case R_PPC64_GOT16_HI:
13256 case R_PPC64_GOT16_HA:
13257 case R_PPC64_GOT16_DS:
13258 case R_PPC64_GOT16_LO_DS:
13261 /* Relocation is to the entry for this symbol in the global
13266 unsigned long indx = 0;
13267 struct got_entry *ent;
13269 if (tls_type == (TLS_TLS | TLS_LD)
13271 || !h->elf.def_dynamic))
13272 ent = ppc64_tlsld_got (input_bfd);
13278 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13279 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13282 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13283 /* This is actually a static link, or it is a
13284 -Bsymbolic link and the symbol is defined
13285 locally, or the symbol was forced to be local
13286 because of a version file. */
13290 BFD_ASSERT (h->elf.dynindx != -1);
13291 indx = h->elf.dynindx;
13292 unresolved_reloc = FALSE;
13294 ent = h->elf.got.glist;
13298 if (local_got_ents == NULL)
13300 ent = local_got_ents[r_symndx];
13303 for (; ent != NULL; ent = ent->next)
13304 if (ent->addend == orig_rel.r_addend
13305 && ent->owner == input_bfd
13306 && ent->tls_type == tls_type)
13312 if (ent->is_indirect)
13313 ent = ent->got.ent;
13314 offp = &ent->got.offset;
13315 got = ppc64_elf_tdata (ent->owner)->got;
13319 /* The offset must always be a multiple of 8. We use the
13320 least significant bit to record whether we have already
13321 processed this entry. */
13323 if ((off & 1) != 0)
13327 /* Generate relocs for the dynamic linker, except in
13328 the case of TLSLD where we'll use one entry per
13336 ? h->elf.type == STT_GNU_IFUNC
13337 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13339 relgot = htab->reliplt;
13340 else if ((info->shared || indx != 0)
13342 || (tls_type == (TLS_TLS | TLS_LD)
13343 && !h->elf.def_dynamic)
13344 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13345 || h->elf.root.type != bfd_link_hash_undefweak))
13346 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13347 if (relgot != NULL)
13349 outrel.r_offset = (got->output_section->vma
13350 + got->output_offset
13352 outrel.r_addend = addend;
13353 if (tls_type & (TLS_LD | TLS_GD))
13355 outrel.r_addend = 0;
13356 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13357 if (tls_type == (TLS_TLS | TLS_GD))
13359 loc = relgot->contents;
13360 loc += (relgot->reloc_count++
13361 * sizeof (Elf64_External_Rela));
13362 bfd_elf64_swap_reloca_out (output_bfd,
13364 outrel.r_offset += 8;
13365 outrel.r_addend = addend;
13367 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13370 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13371 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13372 else if (tls_type == (TLS_TLS | TLS_TPREL))
13373 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13374 else if (indx != 0)
13375 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13379 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13381 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13383 /* Write the .got section contents for the sake
13385 loc = got->contents + off;
13386 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13390 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13392 outrel.r_addend += relocation;
13393 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13394 outrel.r_addend -= htab->elf.tls_sec->vma;
13396 loc = relgot->contents;
13397 loc += (relgot->reloc_count++
13398 * sizeof (Elf64_External_Rela));
13399 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13402 /* Init the .got section contents here if we're not
13403 emitting a reloc. */
13406 relocation += addend;
13407 if (tls_type == (TLS_TLS | TLS_LD))
13409 else if (tls_type != 0)
13411 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13412 if (tls_type == (TLS_TLS | TLS_TPREL))
13413 relocation += DTP_OFFSET - TP_OFFSET;
13415 if (tls_type == (TLS_TLS | TLS_GD))
13417 bfd_put_64 (output_bfd, relocation,
13418 got->contents + off + 8);
13423 bfd_put_64 (output_bfd, relocation,
13424 got->contents + off);
13428 if (off >= (bfd_vma) -2)
13431 relocation = got->output_section->vma + got->output_offset + off;
13432 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
13436 case R_PPC64_PLT16_HA:
13437 case R_PPC64_PLT16_HI:
13438 case R_PPC64_PLT16_LO:
13439 case R_PPC64_PLT32:
13440 case R_PPC64_PLT64:
13441 /* Relocation is to the entry for this symbol in the
13442 procedure linkage table. */
13444 /* Resolve a PLT reloc against a local symbol directly,
13445 without using the procedure linkage table. */
13449 /* It's possible that we didn't make a PLT entry for this
13450 symbol. This happens when statically linking PIC code,
13451 or when using -Bsymbolic. Go find a match if there is a
13453 if (htab->plt != NULL)
13455 struct plt_entry *ent;
13456 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
13457 if (ent->addend == orig_rel.r_addend
13458 && ent->plt.offset != (bfd_vma) -1)
13460 relocation = (htab->plt->output_section->vma
13461 + htab->plt->output_offset
13462 + ent->plt.offset);
13463 unresolved_reloc = FALSE;
13469 /* Relocation value is TOC base. */
13470 relocation = TOCstart;
13471 if (r_symndx == STN_UNDEF)
13472 relocation += htab->stub_group[input_section->id].toc_off;
13473 else if (unresolved_reloc)
13475 else if (sec != NULL && sec->id <= htab->top_id)
13476 relocation += htab->stub_group[sec->id].toc_off;
13478 unresolved_reloc = TRUE;
13481 /* TOC16 relocs. We want the offset relative to the TOC base,
13482 which is the address of the start of the TOC plus 0x8000.
13483 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13485 case R_PPC64_TOC16:
13486 case R_PPC64_TOC16_LO:
13487 case R_PPC64_TOC16_HI:
13488 case R_PPC64_TOC16_DS:
13489 case R_PPC64_TOC16_LO_DS:
13490 case R_PPC64_TOC16_HA:
13491 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
13494 /* Relocate against the beginning of the section. */
13495 case R_PPC64_SECTOFF:
13496 case R_PPC64_SECTOFF_LO:
13497 case R_PPC64_SECTOFF_HI:
13498 case R_PPC64_SECTOFF_DS:
13499 case R_PPC64_SECTOFF_LO_DS:
13500 case R_PPC64_SECTOFF_HA:
13502 addend -= sec->output_section->vma;
13505 case R_PPC64_REL16:
13506 case R_PPC64_REL16_LO:
13507 case R_PPC64_REL16_HI:
13508 case R_PPC64_REL16_HA:
13511 case R_PPC64_REL14:
13512 case R_PPC64_REL14_BRNTAKEN:
13513 case R_PPC64_REL14_BRTAKEN:
13514 case R_PPC64_REL24:
13517 case R_PPC64_TPREL16:
13518 case R_PPC64_TPREL16_LO:
13519 case R_PPC64_TPREL16_HI:
13520 case R_PPC64_TPREL16_HA:
13521 case R_PPC64_TPREL16_DS:
13522 case R_PPC64_TPREL16_LO_DS:
13523 case R_PPC64_TPREL16_HIGHER:
13524 case R_PPC64_TPREL16_HIGHERA:
13525 case R_PPC64_TPREL16_HIGHEST:
13526 case R_PPC64_TPREL16_HIGHESTA:
13528 && h->elf.root.type == bfd_link_hash_undefweak
13529 && h->elf.dynindx == -1)
13531 /* Make this relocation against an undefined weak symbol
13532 resolve to zero. This is really just a tweak, since
13533 code using weak externs ought to check that they are
13534 defined before using them. */
13535 bfd_byte *p = contents + rel->r_offset - d_offset;
13537 insn = bfd_get_32 (output_bfd, p);
13538 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
13540 bfd_put_32 (output_bfd, insn, p);
13543 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13545 /* The TPREL16 relocs shouldn't really be used in shared
13546 libs as they will result in DT_TEXTREL being set, but
13547 support them anyway. */
13551 case R_PPC64_DTPREL16:
13552 case R_PPC64_DTPREL16_LO:
13553 case R_PPC64_DTPREL16_HI:
13554 case R_PPC64_DTPREL16_HA:
13555 case R_PPC64_DTPREL16_DS:
13556 case R_PPC64_DTPREL16_LO_DS:
13557 case R_PPC64_DTPREL16_HIGHER:
13558 case R_PPC64_DTPREL16_HIGHERA:
13559 case R_PPC64_DTPREL16_HIGHEST:
13560 case R_PPC64_DTPREL16_HIGHESTA:
13561 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13564 case R_PPC64_DTPMOD64:
13569 case R_PPC64_TPREL64:
13570 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13573 case R_PPC64_DTPREL64:
13574 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13577 /* Relocations that may need to be propagated if this is a
13579 case R_PPC64_REL30:
13580 case R_PPC64_REL32:
13581 case R_PPC64_REL64:
13582 case R_PPC64_ADDR14:
13583 case R_PPC64_ADDR14_BRNTAKEN:
13584 case R_PPC64_ADDR14_BRTAKEN:
13585 case R_PPC64_ADDR16:
13586 case R_PPC64_ADDR16_DS:
13587 case R_PPC64_ADDR16_HA:
13588 case R_PPC64_ADDR16_HI:
13589 case R_PPC64_ADDR16_HIGHER:
13590 case R_PPC64_ADDR16_HIGHERA:
13591 case R_PPC64_ADDR16_HIGHEST:
13592 case R_PPC64_ADDR16_HIGHESTA:
13593 case R_PPC64_ADDR16_LO:
13594 case R_PPC64_ADDR16_LO_DS:
13595 case R_PPC64_ADDR24:
13596 case R_PPC64_ADDR32:
13597 case R_PPC64_ADDR64:
13598 case R_PPC64_UADDR16:
13599 case R_PPC64_UADDR32:
13600 case R_PPC64_UADDR64:
13602 if ((input_section->flags & SEC_ALLOC) == 0)
13605 if (NO_OPD_RELOCS && is_opd)
13610 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13611 || h->elf.root.type != bfd_link_hash_undefweak)
13612 && (must_be_dyn_reloc (info, r_type)
13613 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
13614 || (ELIMINATE_COPY_RELOCS
13617 && h->elf.dynindx != -1
13618 && !h->elf.non_got_ref
13619 && !h->elf.def_regular)
13622 ? h->elf.type == STT_GNU_IFUNC
13623 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
13625 bfd_boolean skip, relocate;
13629 /* When generating a dynamic object, these relocations
13630 are copied into the output file to be resolved at run
13636 out_off = _bfd_elf_section_offset (output_bfd, info,
13637 input_section, rel->r_offset);
13638 if (out_off == (bfd_vma) -1)
13640 else if (out_off == (bfd_vma) -2)
13641 skip = TRUE, relocate = TRUE;
13642 out_off += (input_section->output_section->vma
13643 + input_section->output_offset);
13644 outrel.r_offset = out_off;
13645 outrel.r_addend = rel->r_addend;
13647 /* Optimize unaligned reloc use. */
13648 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
13649 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
13650 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
13651 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
13652 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
13653 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
13654 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
13655 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
13656 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
13659 memset (&outrel, 0, sizeof outrel);
13660 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
13662 && r_type != R_PPC64_TOC)
13664 BFD_ASSERT (h->elf.dynindx != -1);
13665 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
13669 /* This symbol is local, or marked to become local,
13670 or this is an opd section reloc which must point
13671 at a local function. */
13672 outrel.r_addend += relocation;
13673 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
13675 if (is_opd && h != NULL)
13677 /* Lie about opd entries. This case occurs
13678 when building shared libraries and we
13679 reference a function in another shared
13680 lib. The same thing happens for a weak
13681 definition in an application that's
13682 overridden by a strong definition in a
13683 shared lib. (I believe this is a generic
13684 bug in binutils handling of weak syms.)
13685 In these cases we won't use the opd
13686 entry in this lib. */
13687 unresolved_reloc = FALSE;
13690 && r_type == R_PPC64_ADDR64
13692 ? h->elf.type == STT_GNU_IFUNC
13693 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
13694 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13697 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13699 /* We need to relocate .opd contents for ld.so.
13700 Prelink also wants simple and consistent rules
13701 for relocs. This make all RELATIVE relocs have
13702 *r_offset equal to r_addend. */
13711 ? h->elf.type == STT_GNU_IFUNC
13712 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13714 info->callbacks->einfo
13715 (_("%P: %H: %s for indirect "
13716 "function `%T' unsupported\n"),
13717 input_bfd, input_section, rel->r_offset,
13718 ppc64_elf_howto_table[r_type]->name,
13722 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
13724 else if (sec == NULL || sec->owner == NULL)
13726 bfd_set_error (bfd_error_bad_value);
13733 osec = sec->output_section;
13734 indx = elf_section_data (osec)->dynindx;
13738 if ((osec->flags & SEC_READONLY) == 0
13739 && htab->elf.data_index_section != NULL)
13740 osec = htab->elf.data_index_section;
13742 osec = htab->elf.text_index_section;
13743 indx = elf_section_data (osec)->dynindx;
13745 BFD_ASSERT (indx != 0);
13747 /* We are turning this relocation into one
13748 against a section symbol, so subtract out
13749 the output section's address but not the
13750 offset of the input section in the output
13752 outrel.r_addend -= osec->vma;
13755 outrel.r_info = ELF64_R_INFO (indx, r_type);
13759 sreloc = elf_section_data (input_section)->sreloc;
13761 ? h->elf.type == STT_GNU_IFUNC
13762 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13763 sreloc = htab->reliplt;
13764 if (sreloc == NULL)
13767 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13770 loc = sreloc->contents;
13771 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13772 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13774 /* If this reloc is against an external symbol, it will
13775 be computed at runtime, so there's no need to do
13776 anything now. However, for the sake of prelink ensure
13777 that the section contents are a known value. */
13780 unresolved_reloc = FALSE;
13781 /* The value chosen here is quite arbitrary as ld.so
13782 ignores section contents except for the special
13783 case of .opd where the contents might be accessed
13784 before relocation. Choose zero, as that won't
13785 cause reloc overflow. */
13788 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13789 to improve backward compatibility with older
13791 if (r_type == R_PPC64_ADDR64)
13792 addend = outrel.r_addend;
13793 /* Adjust pc_relative relocs to have zero in *r_offset. */
13794 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13795 addend = (input_section->output_section->vma
13796 + input_section->output_offset
13803 case R_PPC64_GLOB_DAT:
13804 case R_PPC64_JMP_SLOT:
13805 case R_PPC64_JMP_IREL:
13806 case R_PPC64_RELATIVE:
13807 /* We shouldn't ever see these dynamic relocs in relocatable
13809 /* Fall through. */
13811 case R_PPC64_PLTGOT16:
13812 case R_PPC64_PLTGOT16_DS:
13813 case R_PPC64_PLTGOT16_HA:
13814 case R_PPC64_PLTGOT16_HI:
13815 case R_PPC64_PLTGOT16_LO:
13816 case R_PPC64_PLTGOT16_LO_DS:
13817 case R_PPC64_PLTREL32:
13818 case R_PPC64_PLTREL64:
13819 /* These ones haven't been implemented yet. */
13821 info->callbacks->einfo
13822 (_("%P: %B: %s is not supported for `%T'\n"),
13824 ppc64_elf_howto_table[r_type]->name, sym_name);
13826 bfd_set_error (bfd_error_invalid_operation);
13831 /* Multi-instruction sequences that access the TOC can be
13832 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13833 to nop; addi rb,r2,x; */
13839 case R_PPC64_GOT_TLSLD16_HI:
13840 case R_PPC64_GOT_TLSGD16_HI:
13841 case R_PPC64_GOT_TPREL16_HI:
13842 case R_PPC64_GOT_DTPREL16_HI:
13843 case R_PPC64_GOT16_HI:
13844 case R_PPC64_TOC16_HI:
13845 /* These relocs would only be useful if building up an
13846 offset to later add to r2, perhaps in an indexed
13847 addressing mode instruction. Don't try to optimize.
13848 Unfortunately, the possibility of someone building up an
13849 offset like this or even with the HA relocs, means that
13850 we need to check the high insn when optimizing the low
13854 case R_PPC64_GOT_TLSLD16_HA:
13855 case R_PPC64_GOT_TLSGD16_HA:
13856 case R_PPC64_GOT_TPREL16_HA:
13857 case R_PPC64_GOT_DTPREL16_HA:
13858 case R_PPC64_GOT16_HA:
13859 case R_PPC64_TOC16_HA:
13860 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13861 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13863 bfd_byte *p = contents + (rel->r_offset & ~3);
13864 bfd_put_32 (input_bfd, NOP, p);
13868 case R_PPC64_GOT_TLSLD16_LO:
13869 case R_PPC64_GOT_TLSGD16_LO:
13870 case R_PPC64_GOT_TPREL16_LO_DS:
13871 case R_PPC64_GOT_DTPREL16_LO_DS:
13872 case R_PPC64_GOT16_LO:
13873 case R_PPC64_GOT16_LO_DS:
13874 case R_PPC64_TOC16_LO:
13875 case R_PPC64_TOC16_LO_DS:
13876 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13877 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13879 bfd_byte *p = contents + (rel->r_offset & ~3);
13880 insn = bfd_get_32 (input_bfd, p);
13881 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
13883 /* Transform addic to addi when we change reg. */
13884 insn &= ~((0x3f << 26) | (0x1f << 16));
13885 insn |= (14u << 26) | (2 << 16);
13889 insn &= ~(0x1f << 16);
13892 bfd_put_32 (input_bfd, insn, p);
13897 /* Do any further special processing. */
13903 case R_PPC64_ADDR16_HA:
13904 case R_PPC64_REL16_HA:
13905 case R_PPC64_ADDR16_HIGHERA:
13906 case R_PPC64_ADDR16_HIGHESTA:
13907 case R_PPC64_TOC16_HA:
13908 case R_PPC64_SECTOFF_HA:
13909 case R_PPC64_TPREL16_HA:
13910 case R_PPC64_DTPREL16_HA:
13911 case R_PPC64_TPREL16_HIGHER:
13912 case R_PPC64_TPREL16_HIGHERA:
13913 case R_PPC64_TPREL16_HIGHEST:
13914 case R_PPC64_TPREL16_HIGHESTA:
13915 case R_PPC64_DTPREL16_HIGHER:
13916 case R_PPC64_DTPREL16_HIGHERA:
13917 case R_PPC64_DTPREL16_HIGHEST:
13918 case R_PPC64_DTPREL16_HIGHESTA:
13919 /* It's just possible that this symbol is a weak symbol
13920 that's not actually defined anywhere. In that case,
13921 'sec' would be NULL, and we should leave the symbol
13922 alone (it will be set to zero elsewhere in the link). */
13927 case R_PPC64_GOT16_HA:
13928 case R_PPC64_PLTGOT16_HA:
13929 case R_PPC64_PLT16_HA:
13930 case R_PPC64_GOT_TLSGD16_HA:
13931 case R_PPC64_GOT_TLSLD16_HA:
13932 case R_PPC64_GOT_TPREL16_HA:
13933 case R_PPC64_GOT_DTPREL16_HA:
13934 /* Add 0x10000 if sign bit in 0:15 is set.
13935 Bits 0:15 are not used. */
13939 case R_PPC64_ADDR16_DS:
13940 case R_PPC64_ADDR16_LO_DS:
13941 case R_PPC64_GOT16_DS:
13942 case R_PPC64_GOT16_LO_DS:
13943 case R_PPC64_PLT16_LO_DS:
13944 case R_PPC64_SECTOFF_DS:
13945 case R_PPC64_SECTOFF_LO_DS:
13946 case R_PPC64_TOC16_DS:
13947 case R_PPC64_TOC16_LO_DS:
13948 case R_PPC64_PLTGOT16_DS:
13949 case R_PPC64_PLTGOT16_LO_DS:
13950 case R_PPC64_GOT_TPREL16_DS:
13951 case R_PPC64_GOT_TPREL16_LO_DS:
13952 case R_PPC64_GOT_DTPREL16_DS:
13953 case R_PPC64_GOT_DTPREL16_LO_DS:
13954 case R_PPC64_TPREL16_DS:
13955 case R_PPC64_TPREL16_LO_DS:
13956 case R_PPC64_DTPREL16_DS:
13957 case R_PPC64_DTPREL16_LO_DS:
13958 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13960 /* If this reloc is against an lq insn, then the value must be
13961 a multiple of 16. This is somewhat of a hack, but the
13962 "correct" way to do this by defining _DQ forms of all the
13963 _DS relocs bloats all reloc switches in this file. It
13964 doesn't seem to make much sense to use any of these relocs
13965 in data, so testing the insn should be safe. */
13966 if ((insn & (0x3f << 26)) == (56u << 26))
13968 if (((relocation + addend) & mask) != 0)
13970 info->callbacks->einfo
13971 (_("%P: %H: error: %s not a multiple of %u\n"),
13972 input_bfd, input_section, rel->r_offset,
13973 ppc64_elf_howto_table[r_type]->name,
13975 bfd_set_error (bfd_error_bad_value);
13982 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13983 because such sections are not SEC_ALLOC and thus ld.so will
13984 not process them. */
13985 if (unresolved_reloc
13986 && !((input_section->flags & SEC_DEBUGGING) != 0
13987 && h->elf.def_dynamic)
13988 && _bfd_elf_section_offset (output_bfd, info, input_section,
13989 rel->r_offset) != (bfd_vma) -1)
13991 info->callbacks->einfo
13992 (_("%P: %H: unresolvable %s against `%T'\n"),
13993 input_bfd, input_section, rel->r_offset,
13994 ppc64_elf_howto_table[(int) r_type]->name,
13995 h->elf.root.root.string);
13999 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
14007 if (r != bfd_reloc_ok)
14009 char *more_info = NULL;
14010 const char *reloc_name = ppc64_elf_howto_table[r_type]->name;
14012 if (reloc_dest != DEST_NORMAL)
14014 more_info = bfd_malloc (strlen (reloc_name) + 8);
14015 if (more_info != NULL)
14017 strcpy (more_info, reloc_name);
14018 strcat (more_info, (reloc_dest == DEST_OPD
14019 ? " (OPD)" : " (stub)"));
14020 reloc_name = more_info;
14024 if (r == bfd_reloc_overflow)
14029 && h->elf.root.type == bfd_link_hash_undefweak
14030 && ppc64_elf_howto_table[r_type]->pc_relative)
14032 /* Assume this is a call protected by other code that
14033 detects the symbol is undefined. If this is the case,
14034 we can safely ignore the overflow. If not, the
14035 program is hosed anyway, and a little warning isn't
14041 if (!((*info->callbacks->reloc_overflow)
14042 (info, &h->elf.root, sym_name,
14043 reloc_name, orig_rel.r_addend,
14044 input_bfd, input_section, rel->r_offset)))
14049 info->callbacks->einfo
14050 (_("%P: %H: %s against `%T': error %d\n"),
14051 input_bfd, input_section, rel->r_offset,
14052 reloc_name, sym_name, (int) r);
14055 if (more_info != NULL)
14060 /* If we're emitting relocations, then shortly after this function
14061 returns, reloc offsets and addends for this section will be
14062 adjusted. Worse, reloc symbol indices will be for the output
14063 file rather than the input. Save a copy of the relocs for
14064 opd_entry_value. */
14065 if (is_opd && (info->emitrelocations || info->relocatable))
14068 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14069 rel = bfd_alloc (input_bfd, amt);
14070 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
14071 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
14074 memcpy (rel, relocs, amt);
14079 /* Adjust the value of any local symbols in opd sections. */
14082 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14083 const char *name ATTRIBUTE_UNUSED,
14084 Elf_Internal_Sym *elfsym,
14085 asection *input_sec,
14086 struct elf_link_hash_entry *h)
14088 struct _opd_sec_data *opd;
14095 opd = get_opd_info (input_sec);
14096 if (opd == NULL || opd->adjust == NULL)
14099 value = elfsym->st_value - input_sec->output_offset;
14100 if (!info->relocatable)
14101 value -= input_sec->output_section->vma;
14103 adjust = opd->adjust[value / 8];
14107 elfsym->st_value += adjust;
14111 /* Finish up dynamic symbol handling. We set the contents of various
14112 dynamic sections here. */
14115 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14116 struct bfd_link_info *info,
14117 struct elf_link_hash_entry *h,
14118 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14120 struct ppc_link_hash_table *htab;
14121 struct plt_entry *ent;
14122 Elf_Internal_Rela rela;
14125 htab = ppc_hash_table (info);
14129 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14130 if (ent->plt.offset != (bfd_vma) -1)
14132 /* This symbol has an entry in the procedure linkage
14133 table. Set it up. */
14134 if (!htab->elf.dynamic_sections_created
14135 || h->dynindx == -1)
14137 BFD_ASSERT (h->type == STT_GNU_IFUNC
14139 && (h->root.type == bfd_link_hash_defined
14140 || h->root.type == bfd_link_hash_defweak));
14141 rela.r_offset = (htab->iplt->output_section->vma
14142 + htab->iplt->output_offset
14143 + ent->plt.offset);
14144 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14145 rela.r_addend = (h->root.u.def.value
14146 + h->root.u.def.section->output_offset
14147 + h->root.u.def.section->output_section->vma
14149 loc = (htab->reliplt->contents
14150 + (htab->reliplt->reloc_count++
14151 * sizeof (Elf64_External_Rela)));
14155 rela.r_offset = (htab->plt->output_section->vma
14156 + htab->plt->output_offset
14157 + ent->plt.offset);
14158 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14159 rela.r_addend = ent->addend;
14160 loc = (htab->relplt->contents
14161 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
14162 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
14164 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14169 /* This symbol needs a copy reloc. Set it up. */
14171 if (h->dynindx == -1
14172 || (h->root.type != bfd_link_hash_defined
14173 && h->root.type != bfd_link_hash_defweak)
14174 || htab->relbss == NULL)
14177 rela.r_offset = (h->root.u.def.value
14178 + h->root.u.def.section->output_section->vma
14179 + h->root.u.def.section->output_offset);
14180 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14182 loc = htab->relbss->contents;
14183 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14184 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14190 /* Used to decide how to sort relocs in an optimal manner for the
14191 dynamic linker, before writing them out. */
14193 static enum elf_reloc_type_class
14194 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14195 const asection *rel_sec,
14196 const Elf_Internal_Rela *rela)
14198 enum elf_ppc64_reloc_type r_type;
14199 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14201 if (rel_sec == htab->reliplt)
14202 return reloc_class_ifunc;
14204 r_type = ELF64_R_TYPE (rela->r_info);
14207 case R_PPC64_RELATIVE:
14208 return reloc_class_relative;
14209 case R_PPC64_JMP_SLOT:
14210 return reloc_class_plt;
14212 return reloc_class_copy;
14214 return reloc_class_normal;
14218 /* Finish up the dynamic sections. */
14221 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14222 struct bfd_link_info *info)
14224 struct ppc_link_hash_table *htab;
14228 htab = ppc_hash_table (info);
14232 dynobj = htab->elf.dynobj;
14233 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14235 if (htab->elf.dynamic_sections_created)
14237 Elf64_External_Dyn *dyncon, *dynconend;
14239 if (sdyn == NULL || htab->got == NULL)
14242 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14243 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14244 for (; dyncon < dynconend; dyncon++)
14246 Elf_Internal_Dyn dyn;
14249 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14256 case DT_PPC64_GLINK:
14258 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14259 /* We stupidly defined DT_PPC64_GLINK to be the start
14260 of glink rather than the first entry point, which is
14261 what ld.so needs, and now have a bigger stub to
14262 support automatic multiple TOCs. */
14263 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
14267 s = bfd_get_section_by_name (output_bfd, ".opd");
14270 dyn.d_un.d_ptr = s->vma;
14273 case DT_PPC64_OPDSZ:
14274 s = bfd_get_section_by_name (output_bfd, ".opd");
14277 dyn.d_un.d_val = s->size;
14282 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14287 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14291 dyn.d_un.d_val = htab->relplt->size;
14295 /* Don't count procedure linkage table relocs in the
14296 overall reloc count. */
14300 dyn.d_un.d_val -= s->size;
14304 /* We may not be using the standard ELF linker script.
14305 If .rela.plt is the first .rela section, we adjust
14306 DT_RELA to not include it. */
14310 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14312 dyn.d_un.d_ptr += s->size;
14316 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14320 if (htab->got != NULL && htab->got->size != 0)
14322 /* Fill in the first entry in the global offset table.
14323 We use it to hold the link-time TOCbase. */
14324 bfd_put_64 (output_bfd,
14325 elf_gp (output_bfd) + TOC_BASE_OFF,
14326 htab->got->contents);
14328 /* Set .got entry size. */
14329 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
14332 if (htab->plt != NULL && htab->plt->size != 0)
14334 /* Set .plt entry size. */
14335 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
14339 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14340 brlt ourselves if emitrelocations. */
14341 if (htab->brlt != NULL
14342 && htab->brlt->reloc_count != 0
14343 && !_bfd_elf_link_output_relocs (output_bfd,
14345 elf_section_data (htab->brlt)->rela.hdr,
14346 elf_section_data (htab->brlt)->relocs,
14350 if (htab->glink != NULL
14351 && htab->glink->reloc_count != 0
14352 && !_bfd_elf_link_output_relocs (output_bfd,
14354 elf_section_data (htab->glink)->rela.hdr,
14355 elf_section_data (htab->glink)->relocs,
14360 if (htab->glink_eh_frame != NULL
14361 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
14362 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14363 htab->glink_eh_frame,
14364 htab->glink_eh_frame->contents))
14367 /* We need to handle writing out multiple GOT sections ourselves,
14368 since we didn't add them to DYNOBJ. We know dynobj is the first
14370 while ((dynobj = dynobj->link_next) != NULL)
14374 if (!is_ppc64_elf (dynobj))
14377 s = ppc64_elf_tdata (dynobj)->got;
14380 && s->output_section != bfd_abs_section_ptr
14381 && !bfd_set_section_contents (output_bfd, s->output_section,
14382 s->contents, s->output_offset,
14385 s = ppc64_elf_tdata (dynobj)->relgot;
14388 && s->output_section != bfd_abs_section_ptr
14389 && !bfd_set_section_contents (output_bfd, s->output_section,
14390 s->contents, s->output_offset,
14398 #include "elf64-target.h"
14400 /* FreeBSD support */
14402 #undef TARGET_LITTLE_SYM
14403 #undef TARGET_LITTLE_NAME
14405 #undef TARGET_BIG_SYM
14406 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14407 #undef TARGET_BIG_NAME
14408 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14411 #define ELF_OSABI ELFOSABI_FREEBSD
14414 #define elf64_bed elf64_powerpc_fbsd_bed
14416 #include "elf64-target.h"