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_notice_as_needed ppc64_elf_notice_as_needed
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 r11. */
141 #define PLT_CALL_STUB_SIZE (7*4)
142 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
143 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
144 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
145 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
146 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
147 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
148 #define BCTR 0x4e800420 /* bctr */
150 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
151 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
152 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
154 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
155 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
156 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
157 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
158 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
159 #define BNECTR 0x4ca20420 /* bnectr+ */
160 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
162 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
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 /* ld %2,(0b-1b)(%11) */
178 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%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_signed, /* 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_signed, /* 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_signed,/* 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_signed,/* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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_signed, /* 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 /* Like R_PPC64_ADDR16_HI, but no overflow. */
1992 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
1993 16, /* rightshift */
1994 1, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE, /* pc_relative */
1998 complain_overflow_dont, /* complain_on_overflow */
1999 bfd_elf_generic_reloc, /* special_function */
2000 "R_PPC64_ADDR16_HIGH", /* name */
2001 FALSE, /* partial_inplace */
2003 0xffff, /* dst_mask */
2004 FALSE), /* pcrel_offset */
2006 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2007 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2008 16, /* rightshift */
2009 1, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 ppc64_elf_ha_reloc, /* special_function */
2015 "R_PPC64_ADDR16_HIGHA", /* name */
2016 FALSE, /* partial_inplace */
2018 0xffff, /* dst_mask */
2019 FALSE), /* pcrel_offset */
2021 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2022 HOWTO (R_PPC64_DTPREL16_HIGH,
2023 16, /* rightshift */
2024 1, /* size (0 = byte, 1 = short, 2 = long) */
2026 FALSE, /* pc_relative */
2028 complain_overflow_dont, /* complain_on_overflow */
2029 ppc64_elf_unhandled_reloc, /* special_function */
2030 "R_PPC64_DTPREL16_HIGH", /* name */
2031 FALSE, /* partial_inplace */
2033 0xffff, /* dst_mask */
2034 FALSE), /* pcrel_offset */
2036 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2037 HOWTO (R_PPC64_DTPREL16_HIGHA,
2038 16, /* rightshift */
2039 1, /* size (0 = byte, 1 = short, 2 = long) */
2041 FALSE, /* pc_relative */
2043 complain_overflow_dont, /* complain_on_overflow */
2044 ppc64_elf_unhandled_reloc, /* special_function */
2045 "R_PPC64_DTPREL16_HIGHA", /* name */
2046 FALSE, /* partial_inplace */
2048 0xffff, /* dst_mask */
2049 FALSE), /* pcrel_offset */
2051 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2052 HOWTO (R_PPC64_TPREL16_HIGH,
2053 16, /* rightshift */
2054 1, /* size (0 = byte, 1 = short, 2 = long) */
2056 FALSE, /* pc_relative */
2058 complain_overflow_dont, /* complain_on_overflow */
2059 ppc64_elf_unhandled_reloc, /* special_function */
2060 "R_PPC64_TPREL16_HIGH", /* name */
2061 FALSE, /* partial_inplace */
2063 0xffff, /* dst_mask */
2064 FALSE), /* pcrel_offset */
2066 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2067 HOWTO (R_PPC64_TPREL16_HIGHA,
2068 16, /* rightshift */
2069 1, /* size (0 = byte, 1 = short, 2 = long) */
2071 FALSE, /* pc_relative */
2073 complain_overflow_dont, /* complain_on_overflow */
2074 ppc64_elf_unhandled_reloc, /* special_function */
2075 "R_PPC64_TPREL16_HIGHA", /* name */
2076 FALSE, /* partial_inplace */
2078 0xffff, /* dst_mask */
2079 FALSE), /* pcrel_offset */
2081 /* GNU extension to record C++ vtable hierarchy. */
2082 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2084 0, /* size (0 = byte, 1 = short, 2 = long) */
2086 FALSE, /* pc_relative */
2088 complain_overflow_dont, /* complain_on_overflow */
2089 NULL, /* special_function */
2090 "R_PPC64_GNU_VTINHERIT", /* name */
2091 FALSE, /* partial_inplace */
2094 FALSE), /* pcrel_offset */
2096 /* GNU extension to record C++ vtable member usage. */
2097 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2099 0, /* size (0 = byte, 1 = short, 2 = long) */
2101 FALSE, /* pc_relative */
2103 complain_overflow_dont, /* complain_on_overflow */
2104 NULL, /* special_function */
2105 "R_PPC64_GNU_VTENTRY", /* name */
2106 FALSE, /* partial_inplace */
2109 FALSE), /* pcrel_offset */
2113 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2117 ppc_howto_init (void)
2119 unsigned int i, type;
2122 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2125 type = ppc64_elf_howto_raw[i].type;
2126 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2127 / sizeof (ppc64_elf_howto_table[0])));
2128 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2132 static reloc_howto_type *
2133 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2134 bfd_reloc_code_real_type code)
2136 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2138 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2139 /* Initialize howto table if needed. */
2147 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2149 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2151 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2153 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2155 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2157 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2159 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2161 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2163 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2165 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2167 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2169 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2171 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2173 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2175 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2177 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2179 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2181 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2183 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2185 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2187 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2189 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2191 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2193 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2195 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2197 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2199 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2201 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2203 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2205 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2207 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2209 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2211 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2213 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2215 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2217 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2219 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2221 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2223 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2225 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2227 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2229 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2231 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2233 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2235 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2237 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2239 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2241 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2243 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2245 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2247 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2249 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2251 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2253 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2255 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2257 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2259 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2261 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2263 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2265 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2267 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2269 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2271 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2273 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2275 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2277 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2279 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2281 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2283 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2285 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2287 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2289 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2291 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2293 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2295 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2297 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2299 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2301 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2303 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2305 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2307 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2309 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2311 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2313 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2315 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2317 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2319 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2321 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2323 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2325 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2327 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2329 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2331 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2333 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2335 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2337 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2339 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2341 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2343 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2345 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2347 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2349 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2351 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2353 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2355 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2357 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2359 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2361 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2363 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2365 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2367 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2369 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2371 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2375 return ppc64_elf_howto_table[r];
2378 static reloc_howto_type *
2379 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2385 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2387 if (ppc64_elf_howto_raw[i].name != NULL
2388 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2389 return &ppc64_elf_howto_raw[i];
2394 /* Set the howto pointer for a PowerPC ELF reloc. */
2397 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2398 Elf_Internal_Rela *dst)
2402 /* Initialize howto table if needed. */
2403 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2406 type = ELF64_R_TYPE (dst->r_info);
2407 if (type >= (sizeof (ppc64_elf_howto_table)
2408 / sizeof (ppc64_elf_howto_table[0])))
2410 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2412 type = R_PPC64_NONE;
2414 cache_ptr->howto = ppc64_elf_howto_table[type];
2417 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2419 static bfd_reloc_status_type
2420 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2421 void *data, asection *input_section,
2422 bfd *output_bfd, char **error_message)
2424 /* If this is a relocatable link (output_bfd test tells us), just
2425 call the generic function. Any adjustment will be done at final
2427 if (output_bfd != NULL)
2428 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2429 input_section, output_bfd, error_message);
2431 /* Adjust the addend for sign extension of the low 16 bits.
2432 We won't actually be using the low 16 bits, so trashing them
2434 reloc_entry->addend += 0x8000;
2435 return bfd_reloc_continue;
2438 static bfd_reloc_status_type
2439 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2440 void *data, asection *input_section,
2441 bfd *output_bfd, char **error_message)
2443 if (output_bfd != NULL)
2444 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2445 input_section, output_bfd, error_message);
2447 if (strcmp (symbol->section->name, ".opd") == 0
2448 && (symbol->section->owner->flags & DYNAMIC) == 0)
2450 bfd_vma dest = opd_entry_value (symbol->section,
2451 symbol->value + reloc_entry->addend,
2453 if (dest != (bfd_vma) -1)
2454 reloc_entry->addend = dest - (symbol->value
2455 + symbol->section->output_section->vma
2456 + symbol->section->output_offset);
2458 return bfd_reloc_continue;
2461 static bfd_reloc_status_type
2462 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2463 void *data, asection *input_section,
2464 bfd *output_bfd, char **error_message)
2467 enum elf_ppc64_reloc_type r_type;
2468 bfd_size_type octets;
2469 /* Assume 'at' branch hints. */
2470 bfd_boolean is_isa_v2 = TRUE;
2472 /* If this is a relocatable link (output_bfd test tells us), just
2473 call the generic function. Any adjustment will be done at final
2475 if (output_bfd != NULL)
2476 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2477 input_section, output_bfd, error_message);
2479 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2480 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2481 insn &= ~(0x01 << 21);
2482 r_type = reloc_entry->howto->type;
2483 if (r_type == R_PPC64_ADDR14_BRTAKEN
2484 || r_type == R_PPC64_REL14_BRTAKEN)
2485 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2489 /* Set 'a' bit. This is 0b00010 in BO field for branch
2490 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2491 for branch on CTR insns (BO == 1a00t or 1a01t). */
2492 if ((insn & (0x14 << 21)) == (0x04 << 21))
2494 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2504 if (!bfd_is_com_section (symbol->section))
2505 target = symbol->value;
2506 target += symbol->section->output_section->vma;
2507 target += symbol->section->output_offset;
2508 target += reloc_entry->addend;
2510 from = (reloc_entry->address
2511 + input_section->output_offset
2512 + input_section->output_section->vma);
2514 /* Invert 'y' bit if not the default. */
2515 if ((bfd_signed_vma) (target - from) < 0)
2518 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2520 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2521 input_section, output_bfd, error_message);
2524 static bfd_reloc_status_type
2525 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2526 void *data, asection *input_section,
2527 bfd *output_bfd, char **error_message)
2529 /* If this is a relocatable link (output_bfd test tells us), just
2530 call the generic function. Any adjustment will be done at final
2532 if (output_bfd != NULL)
2533 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2534 input_section, output_bfd, error_message);
2536 /* Subtract the symbol section base address. */
2537 reloc_entry->addend -= symbol->section->output_section->vma;
2538 return bfd_reloc_continue;
2541 static bfd_reloc_status_type
2542 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2543 void *data, asection *input_section,
2544 bfd *output_bfd, char **error_message)
2546 /* If this is a relocatable link (output_bfd test tells us), just
2547 call the generic function. Any adjustment will be done at final
2549 if (output_bfd != NULL)
2550 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2551 input_section, output_bfd, error_message);
2553 /* Subtract the symbol section base address. */
2554 reloc_entry->addend -= symbol->section->output_section->vma;
2556 /* Adjust the addend for sign extension of the low 16 bits. */
2557 reloc_entry->addend += 0x8000;
2558 return bfd_reloc_continue;
2561 static bfd_reloc_status_type
2562 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2563 void *data, asection *input_section,
2564 bfd *output_bfd, char **error_message)
2568 /* If this is a relocatable link (output_bfd test tells us), just
2569 call the generic function. Any adjustment will be done at final
2571 if (output_bfd != NULL)
2572 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2573 input_section, output_bfd, error_message);
2575 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2577 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2579 /* Subtract the TOC base address. */
2580 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2581 return bfd_reloc_continue;
2584 static bfd_reloc_status_type
2585 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2586 void *data, asection *input_section,
2587 bfd *output_bfd, char **error_message)
2591 /* If this is a relocatable link (output_bfd test tells us), just
2592 call the generic function. Any adjustment will be done at final
2594 if (output_bfd != NULL)
2595 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2596 input_section, output_bfd, error_message);
2598 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2600 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2602 /* Subtract the TOC base address. */
2603 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2605 /* Adjust the addend for sign extension of the low 16 bits. */
2606 reloc_entry->addend += 0x8000;
2607 return bfd_reloc_continue;
2610 static bfd_reloc_status_type
2611 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2612 void *data, asection *input_section,
2613 bfd *output_bfd, char **error_message)
2616 bfd_size_type octets;
2618 /* If this is a relocatable link (output_bfd test tells us), just
2619 call the generic function. Any adjustment will be done at final
2621 if (output_bfd != NULL)
2622 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2623 input_section, output_bfd, error_message);
2625 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2627 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2629 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2630 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2631 return bfd_reloc_ok;
2634 static bfd_reloc_status_type
2635 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2636 void *data, asection *input_section,
2637 bfd *output_bfd, char **error_message)
2639 /* If this is a relocatable link (output_bfd test tells us), just
2640 call the generic function. Any adjustment will be done at final
2642 if (output_bfd != NULL)
2643 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2644 input_section, output_bfd, error_message);
2646 if (error_message != NULL)
2648 static char buf[60];
2649 sprintf (buf, "generic linker can't handle %s",
2650 reloc_entry->howto->name);
2651 *error_message = buf;
2653 return bfd_reloc_dangerous;
2656 /* Track GOT entries needed for a given symbol. We might need more
2657 than one got entry per symbol. */
2660 struct got_entry *next;
2662 /* The symbol addend that we'll be placing in the GOT. */
2665 /* Unlike other ELF targets, we use separate GOT entries for the same
2666 symbol referenced from different input files. This is to support
2667 automatic multiple TOC/GOT sections, where the TOC base can vary
2668 from one input file to another. After partitioning into TOC groups
2669 we merge entries within the group.
2671 Point to the BFD owning this GOT entry. */
2674 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2675 TLS_TPREL or TLS_DTPREL for tls entries. */
2676 unsigned char tls_type;
2678 /* Non-zero if got.ent points to real entry. */
2679 unsigned char is_indirect;
2681 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2684 bfd_signed_vma refcount;
2686 struct got_entry *ent;
2690 /* The same for PLT. */
2693 struct plt_entry *next;
2699 bfd_signed_vma refcount;
2704 struct ppc64_elf_obj_tdata
2706 struct elf_obj_tdata elf;
2708 /* Shortcuts to dynamic linker sections. */
2712 /* Used during garbage collection. We attach global symbols defined
2713 on removed .opd entries to this section so that the sym is removed. */
2714 asection *deleted_section;
2716 /* TLS local dynamic got entry handling. Support for multiple GOT
2717 sections means we potentially need one of these for each input bfd. */
2718 struct got_entry tlsld_got;
2721 /* A copy of relocs before they are modified for --emit-relocs. */
2722 Elf_Internal_Rela *relocs;
2724 /* Section contents. */
2728 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2729 the reloc to be in the range -32768 to 32767. */
2730 unsigned int has_small_toc_reloc : 1;
2732 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2733 instruction not one we handle. */
2734 unsigned int unexpected_toc_insn : 1;
2737 #define ppc64_elf_tdata(bfd) \
2738 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2740 #define ppc64_tlsld_got(bfd) \
2741 (&ppc64_elf_tdata (bfd)->tlsld_got)
2743 #define is_ppc64_elf(bfd) \
2744 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2745 && elf_object_id (bfd) == PPC64_ELF_DATA)
2747 /* Override the generic function because we store some extras. */
2750 ppc64_elf_mkobject (bfd *abfd)
2752 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2756 /* Fix bad default arch selected for a 64 bit input bfd when the
2757 default is 32 bit. */
2760 ppc64_elf_object_p (bfd *abfd)
2762 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2764 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2766 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2768 /* Relies on arch after 32 bit default being 64 bit default. */
2769 abfd->arch_info = abfd->arch_info->next;
2770 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2776 /* Support for core dump NOTE sections. */
2779 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2781 size_t offset, size;
2783 if (note->descsz != 504)
2787 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2790 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2796 /* Make a ".reg/999" section. */
2797 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2798 size, note->descpos + offset);
2802 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2804 if (note->descsz != 136)
2807 elf_tdata (abfd)->core->pid
2808 = bfd_get_32 (abfd, note->descdata + 24);
2809 elf_tdata (abfd)->core->program
2810 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2811 elf_tdata (abfd)->core->command
2812 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2818 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2831 va_start (ap, note_type);
2832 memset (data, 0, sizeof (data));
2833 strncpy (data + 40, va_arg (ap, const char *), 16);
2834 strncpy (data + 56, va_arg (ap, const char *), 80);
2836 return elfcore_write_note (abfd, buf, bufsiz,
2837 "CORE", note_type, data, sizeof (data));
2848 va_start (ap, note_type);
2849 memset (data, 0, 112);
2850 pid = va_arg (ap, long);
2851 bfd_put_32 (abfd, pid, data + 32);
2852 cursig = va_arg (ap, int);
2853 bfd_put_16 (abfd, cursig, data + 12);
2854 greg = va_arg (ap, const void *);
2855 memcpy (data + 112, greg, 384);
2856 memset (data + 496, 0, 8);
2858 return elfcore_write_note (abfd, buf, bufsiz,
2859 "CORE", note_type, data, sizeof (data));
2864 /* Add extra PPC sections. */
2866 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2868 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2869 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2870 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2871 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2872 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2873 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2874 { NULL, 0, 0, 0, 0 }
2877 enum _ppc64_sec_type {
2883 struct _ppc64_elf_section_data
2885 struct bfd_elf_section_data elf;
2889 /* An array with one entry for each opd function descriptor. */
2890 struct _opd_sec_data
2892 /* Points to the function code section for local opd entries. */
2893 asection **func_sec;
2895 /* After editing .opd, adjust references to opd local syms. */
2899 /* An array for toc sections, indexed by offset/8. */
2900 struct _toc_sec_data
2902 /* Specifies the relocation symbol index used at a given toc offset. */
2905 /* And the relocation addend. */
2910 enum _ppc64_sec_type sec_type:2;
2912 /* Flag set when small branches are detected. Used to
2913 select suitable defaults for the stub group size. */
2914 unsigned int has_14bit_branch:1;
2917 #define ppc64_elf_section_data(sec) \
2918 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2921 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2923 if (!sec->used_by_bfd)
2925 struct _ppc64_elf_section_data *sdata;
2926 bfd_size_type amt = sizeof (*sdata);
2928 sdata = bfd_zalloc (abfd, amt);
2931 sec->used_by_bfd = sdata;
2934 return _bfd_elf_new_section_hook (abfd, sec);
2937 static struct _opd_sec_data *
2938 get_opd_info (asection * sec)
2941 && ppc64_elf_section_data (sec) != NULL
2942 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2943 return &ppc64_elf_section_data (sec)->u.opd;
2947 /* Parameters for the qsort hook. */
2948 static bfd_boolean synthetic_relocatable;
2950 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2953 compare_symbols (const void *ap, const void *bp)
2955 const asymbol *a = * (const asymbol **) ap;
2956 const asymbol *b = * (const asymbol **) bp;
2958 /* Section symbols first. */
2959 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2961 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2964 /* then .opd symbols. */
2965 if (strcmp (a->section->name, ".opd") == 0
2966 && strcmp (b->section->name, ".opd") != 0)
2968 if (strcmp (a->section->name, ".opd") != 0
2969 && strcmp (b->section->name, ".opd") == 0)
2972 /* then other code symbols. */
2973 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2974 == (SEC_CODE | SEC_ALLOC)
2975 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2976 != (SEC_CODE | SEC_ALLOC))
2979 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2980 != (SEC_CODE | SEC_ALLOC)
2981 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2982 == (SEC_CODE | SEC_ALLOC))
2985 if (synthetic_relocatable)
2987 if (a->section->id < b->section->id)
2990 if (a->section->id > b->section->id)
2994 if (a->value + a->section->vma < b->value + b->section->vma)
2997 if (a->value + a->section->vma > b->value + b->section->vma)
3000 /* For syms with the same value, prefer strong dynamic global function
3001 syms over other syms. */
3002 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3005 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3008 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3011 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3014 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3017 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3020 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3023 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3029 /* Search SYMS for a symbol of the given VALUE. */
3032 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
3040 mid = (lo + hi) >> 1;
3041 if (syms[mid]->value + syms[mid]->section->vma < value)
3043 else if (syms[mid]->value + syms[mid]->section->vma > value)
3053 mid = (lo + hi) >> 1;
3054 if (syms[mid]->section->id < id)
3056 else if (syms[mid]->section->id > id)
3058 else if (syms[mid]->value < value)
3060 else if (syms[mid]->value > value)
3070 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3072 bfd_vma vma = *(bfd_vma *) ptr;
3073 return ((section->flags & SEC_ALLOC) != 0
3074 && section->vma <= vma
3075 && vma < section->vma + section->size);
3078 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3079 entry syms. Also generate @plt symbols for the glink branch table. */
3082 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3083 long static_count, asymbol **static_syms,
3084 long dyn_count, asymbol **dyn_syms,
3091 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3093 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3098 opd = bfd_get_section_by_name (abfd, ".opd");
3102 symcount = static_count;
3104 symcount += dyn_count;
3108 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3112 if (!relocatable && static_count != 0 && dyn_count != 0)
3114 /* Use both symbol tables. */
3115 memcpy (syms, static_syms, static_count * sizeof (*syms));
3116 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3118 else if (!relocatable && static_count == 0)
3119 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3121 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3123 synthetic_relocatable = relocatable;
3124 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3126 if (!relocatable && symcount > 1)
3129 /* Trim duplicate syms, since we may have merged the normal and
3130 dynamic symbols. Actually, we only care about syms that have
3131 different values, so trim any with the same value. */
3132 for (i = 1, j = 1; i < symcount; ++i)
3133 if (syms[i - 1]->value + syms[i - 1]->section->vma
3134 != syms[i]->value + syms[i]->section->vma)
3135 syms[j++] = syms[i];
3140 if (strcmp (syms[i]->section->name, ".opd") == 0)
3144 for (; i < symcount; ++i)
3145 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3146 != (SEC_CODE | SEC_ALLOC))
3147 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3151 for (; i < symcount; ++i)
3152 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3156 for (; i < symcount; ++i)
3157 if (strcmp (syms[i]->section->name, ".opd") != 0)
3161 for (; i < symcount; ++i)
3162 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3163 != (SEC_CODE | SEC_ALLOC))
3171 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3176 if (opdsymend == secsymend)
3179 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3180 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3184 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3191 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3195 while (r < opd->relocation + relcount
3196 && r->address < syms[i]->value + opd->vma)
3199 if (r == opd->relocation + relcount)
3202 if (r->address != syms[i]->value + opd->vma)
3205 if (r->howto->type != R_PPC64_ADDR64)
3208 sym = *r->sym_ptr_ptr;
3209 if (!sym_exists_at (syms, opdsymend, symcount,
3210 sym->section->id, sym->value + r->addend))
3213 size += sizeof (asymbol);
3214 size += strlen (syms[i]->name) + 2;
3218 s = *ret = bfd_malloc (size);
3225 names = (char *) (s + count);
3227 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3231 while (r < opd->relocation + relcount
3232 && r->address < syms[i]->value + opd->vma)
3235 if (r == opd->relocation + relcount)
3238 if (r->address != syms[i]->value + opd->vma)
3241 if (r->howto->type != R_PPC64_ADDR64)
3244 sym = *r->sym_ptr_ptr;
3245 if (!sym_exists_at (syms, opdsymend, symcount,
3246 sym->section->id, sym->value + r->addend))
3251 s->flags |= BSF_SYNTHETIC;
3252 s->section = sym->section;
3253 s->value = sym->value + r->addend;
3256 len = strlen (syms[i]->name);
3257 memcpy (names, syms[i]->name, len + 1);
3259 /* Have udata.p point back to the original symbol this
3260 synthetic symbol was derived from. */
3261 s->udata.p = syms[i];
3268 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3272 bfd_vma glink_vma = 0, resolv_vma = 0;
3273 asection *dynamic, *glink = NULL, *relplt = NULL;
3276 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3280 free_contents_and_exit:
3288 for (i = secsymend; i < opdsymend; ++i)
3292 /* Ignore bogus symbols. */
3293 if (syms[i]->value > opd->size - 8)
3296 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3297 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3300 size += sizeof (asymbol);
3301 size += strlen (syms[i]->name) + 2;
3305 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3307 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3309 bfd_byte *dynbuf, *extdyn, *extdynend;
3311 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3313 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3314 goto free_contents_and_exit;
3316 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3317 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3320 extdynend = extdyn + dynamic->size;
3321 for (; extdyn < extdynend; extdyn += extdynsize)
3323 Elf_Internal_Dyn dyn;
3324 (*swap_dyn_in) (abfd, extdyn, &dyn);
3326 if (dyn.d_tag == DT_NULL)
3329 if (dyn.d_tag == DT_PPC64_GLINK)
3331 /* The first glink stub starts at offset 32; see comment in
3332 ppc64_elf_finish_dynamic_sections. */
3333 glink_vma = dyn.d_un.d_val + 32;
3334 /* The .glink section usually does not survive the final
3335 link; search for the section (usually .text) where the
3336 glink stubs now reside. */
3337 glink = bfd_sections_find_if (abfd, section_covers_vma,
3348 /* Determine __glink trampoline by reading the relative branch
3349 from the first glink stub. */
3351 if (bfd_get_section_contents (abfd, glink, buf,
3352 glink_vma + 4 - glink->vma, 4))
3354 unsigned int insn = bfd_get_32 (abfd, buf);
3356 if ((insn & ~0x3fffffc) == 0)
3357 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3361 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3363 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3366 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3367 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3368 goto free_contents_and_exit;
3370 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3371 size += plt_count * sizeof (asymbol);
3373 p = relplt->relocation;
3374 for (i = 0; i < plt_count; i++, p++)
3376 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3378 size += sizeof ("+0x") - 1 + 16;
3383 s = *ret = bfd_malloc (size);
3385 goto free_contents_and_exit;
3387 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3389 for (i = secsymend; i < opdsymend; ++i)
3393 if (syms[i]->value > opd->size - 8)
3396 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3397 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3401 asection *sec = abfd->sections;
3408 long mid = (lo + hi) >> 1;
3409 if (syms[mid]->section->vma < ent)
3411 else if (syms[mid]->section->vma > ent)
3415 sec = syms[mid]->section;
3420 if (lo >= hi && lo > codesecsym)
3421 sec = syms[lo - 1]->section;
3423 for (; sec != NULL; sec = sec->next)
3427 /* SEC_LOAD may not be set if SEC is from a separate debug
3429 if ((sec->flags & SEC_ALLOC) == 0)
3431 if ((sec->flags & SEC_CODE) != 0)
3434 s->flags |= BSF_SYNTHETIC;
3435 s->value = ent - s->section->vma;
3438 len = strlen (syms[i]->name);
3439 memcpy (names, syms[i]->name, len + 1);
3441 /* Have udata.p point back to the original symbol this
3442 synthetic symbol was derived from. */
3443 s->udata.p = syms[i];
3449 if (glink != NULL && relplt != NULL)
3453 /* Add a symbol for the main glink trampoline. */
3454 memset (s, 0, sizeof *s);
3456 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3458 s->value = resolv_vma - glink->vma;
3460 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3461 names += sizeof ("__glink_PLTresolve");
3466 /* FIXME: It would be very much nicer to put sym@plt on the
3467 stub rather than on the glink branch table entry. The
3468 objdump disassembler would then use a sensible symbol
3469 name on plt calls. The difficulty in doing so is
3470 a) finding the stubs, and,
3471 b) matching stubs against plt entries, and,
3472 c) there can be multiple stubs for a given plt entry.
3474 Solving (a) could be done by code scanning, but older
3475 ppc64 binaries used different stubs to current code.
3476 (b) is the tricky one since you need to known the toc
3477 pointer for at least one function that uses a pic stub to
3478 be able to calculate the plt address referenced.
3479 (c) means gdb would need to set multiple breakpoints (or
3480 find the glink branch itself) when setting breakpoints
3481 for pending shared library loads. */
3482 p = relplt->relocation;
3483 for (i = 0; i < plt_count; i++, p++)
3487 *s = **p->sym_ptr_ptr;
3488 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3489 we are defining a symbol, ensure one of them is set. */
3490 if ((s->flags & BSF_LOCAL) == 0)
3491 s->flags |= BSF_GLOBAL;
3492 s->flags |= BSF_SYNTHETIC;
3494 s->value = glink_vma - glink->vma;
3497 len = strlen ((*p->sym_ptr_ptr)->name);
3498 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3502 memcpy (names, "+0x", sizeof ("+0x") - 1);
3503 names += sizeof ("+0x") - 1;
3504 bfd_sprintf_vma (abfd, names, p->addend);
3505 names += strlen (names);
3507 memcpy (names, "@plt", sizeof ("@plt"));
3508 names += sizeof ("@plt");
3523 /* The following functions are specific to the ELF linker, while
3524 functions above are used generally. Those named ppc64_elf_* are
3525 called by the main ELF linker code. They appear in this file more
3526 or less in the order in which they are called. eg.
3527 ppc64_elf_check_relocs is called early in the link process,
3528 ppc64_elf_finish_dynamic_sections is one of the last functions
3531 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3532 functions have both a function code symbol and a function descriptor
3533 symbol. A call to foo in a relocatable object file looks like:
3540 The function definition in another object file might be:
3544 . .quad .TOC.@tocbase
3550 When the linker resolves the call during a static link, the branch
3551 unsurprisingly just goes to .foo and the .opd information is unused.
3552 If the function definition is in a shared library, things are a little
3553 different: The call goes via a plt call stub, the opd information gets
3554 copied to the plt, and the linker patches the nop.
3562 . std 2,40(1) # in practice, the call stub
3563 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3564 . addi 11,11,Lfoo@toc@l # this is the general idea
3572 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3574 The "reloc ()" notation is supposed to indicate that the linker emits
3575 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3578 What are the difficulties here? Well, firstly, the relocations
3579 examined by the linker in check_relocs are against the function code
3580 sym .foo, while the dynamic relocation in the plt is emitted against
3581 the function descriptor symbol, foo. Somewhere along the line, we need
3582 to carefully copy dynamic link information from one symbol to the other.
3583 Secondly, the generic part of the elf linker will make .foo a dynamic
3584 symbol as is normal for most other backends. We need foo dynamic
3585 instead, at least for an application final link. However, when
3586 creating a shared library containing foo, we need to have both symbols
3587 dynamic so that references to .foo are satisfied during the early
3588 stages of linking. Otherwise the linker might decide to pull in a
3589 definition from some other object, eg. a static library.
3591 Update: As of August 2004, we support a new convention. Function
3592 calls may use the function descriptor symbol, ie. "bl foo". This
3593 behaves exactly as "bl .foo". */
3595 /* Of those relocs that might be copied as dynamic relocs, this function
3596 selects those that must be copied when linking a shared library,
3597 even when the symbol is local. */
3600 must_be_dyn_reloc (struct bfd_link_info *info,
3601 enum elf_ppc64_reloc_type r_type)
3613 case R_PPC64_TPREL16:
3614 case R_PPC64_TPREL16_LO:
3615 case R_PPC64_TPREL16_HI:
3616 case R_PPC64_TPREL16_HA:
3617 case R_PPC64_TPREL16_DS:
3618 case R_PPC64_TPREL16_LO_DS:
3619 case R_PPC64_TPREL16_HIGH:
3620 case R_PPC64_TPREL16_HIGHA:
3621 case R_PPC64_TPREL16_HIGHER:
3622 case R_PPC64_TPREL16_HIGHERA:
3623 case R_PPC64_TPREL16_HIGHEST:
3624 case R_PPC64_TPREL16_HIGHESTA:
3625 case R_PPC64_TPREL64:
3626 return !info->executable;
3630 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3631 copying dynamic variables from a shared lib into an app's dynbss
3632 section, and instead use a dynamic relocation to point into the
3633 shared lib. With code that gcc generates, it's vital that this be
3634 enabled; In the PowerPC64 ABI, the address of a function is actually
3635 the address of a function descriptor, which resides in the .opd
3636 section. gcc uses the descriptor directly rather than going via the
3637 GOT as some other ABI's do, which means that initialized function
3638 pointers must reference the descriptor. Thus, a function pointer
3639 initialized to the address of a function in a shared library will
3640 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3641 redefines the function descriptor symbol to point to the copy. This
3642 presents a problem as a plt entry for that function is also
3643 initialized from the function descriptor symbol and the copy reloc
3644 may not be initialized first. */
3645 #define ELIMINATE_COPY_RELOCS 1
3647 /* Section name for stubs is the associated section name plus this
3649 #define STUB_SUFFIX ".stub"
3652 ppc_stub_long_branch:
3653 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3654 destination, but a 24 bit branch in a stub section will reach.
3657 ppc_stub_plt_branch:
3658 Similar to the above, but a 24 bit branch in the stub section won't
3659 reach its destination.
3660 . addis %r11,%r2,xxx@toc@ha
3661 . ld %r12,xxx@toc@l(%r11)
3666 Used to call a function in a shared library. If it so happens that
3667 the plt entry referenced crosses a 64k boundary, then an extra
3668 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3670 . addis %r11,%r2,xxx@toc@ha
3671 . ld %r12,xxx+0@toc@l(%r11)
3673 . ld %r2,xxx+8@toc@l(%r11)
3674 . ld %r11,xxx+16@toc@l(%r11)
3677 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3678 code to adjust the value and save r2 to support multiple toc sections.
3679 A ppc_stub_long_branch with an r2 offset looks like:
3681 . addis %r2,%r2,off@ha
3682 . addi %r2,%r2,off@l
3685 A ppc_stub_plt_branch with an r2 offset looks like:
3687 . addis %r11,%r2,xxx@toc@ha
3688 . ld %r12,xxx@toc@l(%r11)
3689 . addis %r2,%r2,off@ha
3690 . addi %r2,%r2,off@l
3694 In cases where the "addis" instruction would add zero, the "addis" is
3695 omitted and following instructions modified slightly in some cases.
3698 enum ppc_stub_type {
3700 ppc_stub_long_branch,
3701 ppc_stub_long_branch_r2off,
3702 ppc_stub_plt_branch,
3703 ppc_stub_plt_branch_r2off,
3705 ppc_stub_plt_call_r2save
3708 struct ppc_stub_hash_entry {
3710 /* Base hash table entry structure. */
3711 struct bfd_hash_entry root;
3713 enum ppc_stub_type stub_type;
3715 /* The stub section. */
3718 /* Offset within stub_sec of the beginning of this stub. */
3719 bfd_vma stub_offset;
3721 /* Given the symbol's value and its section we can determine its final
3722 value when building the stubs (so the stub knows where to jump. */
3723 bfd_vma target_value;
3724 asection *target_section;
3726 /* The symbol table entry, if any, that this was derived from. */
3727 struct ppc_link_hash_entry *h;
3728 struct plt_entry *plt_ent;
3730 /* Where this stub is being called from, or, in the case of combined
3731 stub sections, the first input section in the group. */
3735 struct ppc_branch_hash_entry {
3737 /* Base hash table entry structure. */
3738 struct bfd_hash_entry root;
3740 /* Offset within branch lookup table. */
3741 unsigned int offset;
3743 /* Generation marker. */
3747 /* Used to track dynamic relocations for local symbols. */
3748 struct ppc_dyn_relocs
3750 struct ppc_dyn_relocs *next;
3752 /* The input section of the reloc. */
3755 /* Total number of relocs copied for the input section. */
3756 unsigned int count : 31;
3758 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3759 unsigned int ifunc : 1;
3762 struct ppc_link_hash_entry
3764 struct elf_link_hash_entry elf;
3767 /* A pointer to the most recently used stub hash entry against this
3769 struct ppc_stub_hash_entry *stub_cache;
3771 /* A pointer to the next symbol starting with a '.' */
3772 struct ppc_link_hash_entry *next_dot_sym;
3775 /* Track dynamic relocs copied for this symbol. */
3776 struct elf_dyn_relocs *dyn_relocs;
3778 /* Link between function code and descriptor symbols. */
3779 struct ppc_link_hash_entry *oh;
3781 /* Flag function code and descriptor symbols. */
3782 unsigned int is_func:1;
3783 unsigned int is_func_descriptor:1;
3784 unsigned int fake:1;
3786 /* Whether global opd/toc sym has been adjusted or not.
3787 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3788 should be set for all globals defined in any opd/toc section. */
3789 unsigned int adjust_done:1;
3791 /* Set if we twiddled this symbol to weak at some stage. */
3792 unsigned int was_undefined:1;
3794 /* Contexts in which symbol is used in the GOT (or TOC).
3795 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3796 corresponding relocs are encountered during check_relocs.
3797 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3798 indicate the corresponding GOT entry type is not needed.
3799 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3800 a TPREL one. We use a separate flag rather than setting TPREL
3801 just for convenience in distinguishing the two cases. */
3802 #define TLS_GD 1 /* GD reloc. */
3803 #define TLS_LD 2 /* LD reloc. */
3804 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3805 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3806 #define TLS_TLS 16 /* Any TLS reloc. */
3807 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3808 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3809 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3810 unsigned char tls_mask;
3813 /* ppc64 ELF linker hash table. */
3815 struct ppc_link_hash_table
3817 struct elf_link_hash_table elf;
3819 /* The stub hash table. */
3820 struct bfd_hash_table stub_hash_table;
3822 /* Another hash table for plt_branch stubs. */
3823 struct bfd_hash_table branch_hash_table;
3825 /* Hash table for function prologue tocsave. */
3826 htab_t tocsave_htab;
3828 /* Linker stub bfd. */
3831 /* Linker call-backs. */
3832 asection * (*add_stub_section) (const char *, asection *);
3833 void (*layout_sections_again) (void);
3835 /* Array to keep track of which stub sections have been created, and
3836 information on stub grouping. */
3838 /* This is the section to which stubs in the group will be attached. */
3840 /* The stub section. */
3842 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3846 /* Temp used when calculating TOC pointers. */
3849 asection *toc_first_sec;
3851 /* Highest input section id. */
3854 /* Highest output section index. */
3857 /* Used when adding symbols. */
3858 struct ppc_link_hash_entry *dot_syms;
3860 /* List of input sections for each output section. */
3861 asection **input_list;
3863 /* Short-cuts to get to dynamic linker sections. */
3875 asection *glink_eh_frame;
3877 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3878 struct ppc_link_hash_entry *tls_get_addr;
3879 struct ppc_link_hash_entry *tls_get_addr_fd;
3881 /* The size of reliplt used by got entry relocs. */
3882 bfd_size_type got_reli_size;
3885 unsigned long stub_count[ppc_stub_plt_call_r2save];
3887 /* Number of stubs against global syms. */
3888 unsigned long stub_globals;
3890 /* Alignment of PLT call stubs. */
3891 unsigned int plt_stub_align:4;
3893 /* Set if PLT call stubs should load r11. */
3894 unsigned int plt_static_chain:1;
3896 /* Set if PLT call stubs need a read-read barrier. */
3897 unsigned int plt_thread_safe:1;
3899 /* Set if we should emit symbols for stubs. */
3900 unsigned int emit_stub_syms:1;
3902 /* Set if __tls_get_addr optimization should not be done. */
3903 unsigned int no_tls_get_addr_opt:1;
3905 /* Support for multiple toc sections. */
3906 unsigned int do_multi_toc:1;
3907 unsigned int multi_toc_needed:1;
3908 unsigned int second_toc_pass:1;
3909 unsigned int do_toc_opt:1;
3912 unsigned int stub_error:1;
3914 /* Temp used by ppc64_elf_process_dot_syms. */
3915 unsigned int twiddled_syms:1;
3917 /* Incremented every time we size stubs. */
3918 unsigned int stub_iteration;
3920 /* Small local sym cache. */
3921 struct sym_cache sym_cache;
3924 /* Rename some of the generic section flags to better document how they
3927 /* Nonzero if this section has TLS related relocations. */
3928 #define has_tls_reloc sec_flg0
3930 /* Nonzero if this section has a call to __tls_get_addr. */
3931 #define has_tls_get_addr_call sec_flg1
3933 /* Nonzero if this section has any toc or got relocs. */
3934 #define has_toc_reloc sec_flg2
3936 /* Nonzero if this section has a call to another section that uses
3938 #define makes_toc_func_call sec_flg3
3940 /* Recursion protection when determining above flag. */
3941 #define call_check_in_progress sec_flg4
3942 #define call_check_done sec_flg5
3944 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3946 #define ppc_hash_table(p) \
3947 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3948 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3950 #define ppc_stub_hash_lookup(table, string, create, copy) \
3951 ((struct ppc_stub_hash_entry *) \
3952 bfd_hash_lookup ((table), (string), (create), (copy)))
3954 #define ppc_branch_hash_lookup(table, string, create, copy) \
3955 ((struct ppc_branch_hash_entry *) \
3956 bfd_hash_lookup ((table), (string), (create), (copy)))
3958 /* Create an entry in the stub hash table. */
3960 static struct bfd_hash_entry *
3961 stub_hash_newfunc (struct bfd_hash_entry *entry,
3962 struct bfd_hash_table *table,
3965 /* Allocate the structure if it has not already been allocated by a
3969 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3974 /* Call the allocation method of the superclass. */
3975 entry = bfd_hash_newfunc (entry, table, string);
3978 struct ppc_stub_hash_entry *eh;
3980 /* Initialize the local fields. */
3981 eh = (struct ppc_stub_hash_entry *) entry;
3982 eh->stub_type = ppc_stub_none;
3983 eh->stub_sec = NULL;
3984 eh->stub_offset = 0;
3985 eh->target_value = 0;
3986 eh->target_section = NULL;
3994 /* Create an entry in the branch hash table. */
3996 static struct bfd_hash_entry *
3997 branch_hash_newfunc (struct bfd_hash_entry *entry,
3998 struct bfd_hash_table *table,
4001 /* Allocate the structure if it has not already been allocated by a
4005 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4010 /* Call the allocation method of the superclass. */
4011 entry = bfd_hash_newfunc (entry, table, string);
4014 struct ppc_branch_hash_entry *eh;
4016 /* Initialize the local fields. */
4017 eh = (struct ppc_branch_hash_entry *) entry;
4025 /* Create an entry in a ppc64 ELF linker hash table. */
4027 static struct bfd_hash_entry *
4028 link_hash_newfunc (struct bfd_hash_entry *entry,
4029 struct bfd_hash_table *table,
4032 /* Allocate the structure if it has not already been allocated by a
4036 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4041 /* Call the allocation method of the superclass. */
4042 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4045 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4047 memset (&eh->u.stub_cache, 0,
4048 (sizeof (struct ppc_link_hash_entry)
4049 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4051 /* When making function calls, old ABI code references function entry
4052 points (dot symbols), while new ABI code references the function
4053 descriptor symbol. We need to make any combination of reference and
4054 definition work together, without breaking archive linking.
4056 For a defined function "foo" and an undefined call to "bar":
4057 An old object defines "foo" and ".foo", references ".bar" (possibly
4059 A new object defines "foo" and references "bar".
4061 A new object thus has no problem with its undefined symbols being
4062 satisfied by definitions in an old object. On the other hand, the
4063 old object won't have ".bar" satisfied by a new object.
4065 Keep a list of newly added dot-symbols. */
4067 if (string[0] == '.')
4069 struct ppc_link_hash_table *htab;
4071 htab = (struct ppc_link_hash_table *) table;
4072 eh->u.next_dot_sym = htab->dot_syms;
4073 htab->dot_syms = eh;
4080 struct tocsave_entry {
4086 tocsave_htab_hash (const void *p)
4088 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4089 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4093 tocsave_htab_eq (const void *p1, const void *p2)
4095 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4096 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4097 return e1->sec == e2->sec && e1->offset == e2->offset;
4100 /* Create a ppc64 ELF linker hash table. */
4102 static struct bfd_link_hash_table *
4103 ppc64_elf_link_hash_table_create (bfd *abfd)
4105 struct ppc_link_hash_table *htab;
4106 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4108 htab = bfd_zmalloc (amt);
4112 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4113 sizeof (struct ppc_link_hash_entry),
4120 /* Init the stub hash table too. */
4121 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4122 sizeof (struct ppc_stub_hash_entry)))
4125 /* And the branch hash table. */
4126 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4127 sizeof (struct ppc_branch_hash_entry)))
4130 htab->tocsave_htab = htab_try_create (1024,
4134 if (htab->tocsave_htab == NULL)
4137 /* Initializing two fields of the union is just cosmetic. We really
4138 only care about glist, but when compiled on a 32-bit host the
4139 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4140 debugger inspection of these fields look nicer. */
4141 htab->elf.init_got_refcount.refcount = 0;
4142 htab->elf.init_got_refcount.glist = NULL;
4143 htab->elf.init_plt_refcount.refcount = 0;
4144 htab->elf.init_plt_refcount.glist = NULL;
4145 htab->elf.init_got_offset.offset = 0;
4146 htab->elf.init_got_offset.glist = NULL;
4147 htab->elf.init_plt_offset.offset = 0;
4148 htab->elf.init_plt_offset.glist = NULL;
4150 return &htab->elf.root;
4153 /* Free the derived linker hash table. */
4156 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4158 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4160 bfd_hash_table_free (&htab->stub_hash_table);
4161 bfd_hash_table_free (&htab->branch_hash_table);
4162 if (htab->tocsave_htab)
4163 htab_delete (htab->tocsave_htab);
4164 _bfd_elf_link_hash_table_free (hash);
4167 /* Create sections for linker generated code. */
4170 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4172 struct ppc_link_hash_table *htab;
4175 htab = ppc_hash_table (info);
4177 /* Create .sfpr for code to save and restore fp regs. */
4178 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4179 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4180 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4182 if (htab->sfpr == NULL
4183 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4186 /* Create .glink for lazy dynamic linking support. */
4187 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4189 if (htab->glink == NULL
4190 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4193 if (!info->no_ld_generated_unwind_info)
4195 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4196 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4197 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4200 if (htab->glink_eh_frame == NULL
4201 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4205 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4206 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4207 if (htab->iplt == NULL
4208 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4211 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4212 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4213 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4216 if (htab->reliplt == NULL
4217 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4220 /* Create branch lookup table for plt_branch stubs. */
4221 flags = (SEC_ALLOC | SEC_LOAD
4222 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4223 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4225 if (htab->brlt == NULL
4226 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4232 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4233 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4234 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4237 if (htab->relbrlt == NULL
4238 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4244 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4247 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4249 struct ppc_link_hash_table *htab;
4251 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4253 /* Always hook our dynamic sections into the first bfd, which is the
4254 linker created stub bfd. This ensures that the GOT header is at
4255 the start of the output TOC section. */
4256 htab = ppc_hash_table (info);
4259 htab->stub_bfd = abfd;
4260 htab->elf.dynobj = abfd;
4262 if (info->relocatable)
4265 return create_linkage_sections (htab->elf.dynobj, info);
4268 /* Build a name for an entry in the stub hash table. */
4271 ppc_stub_name (const asection *input_section,
4272 const asection *sym_sec,
4273 const struct ppc_link_hash_entry *h,
4274 const Elf_Internal_Rela *rel)
4279 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4280 offsets from a sym as a branch target? In fact, we could
4281 probably assume the addend is always zero. */
4282 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4286 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4287 stub_name = bfd_malloc (len);
4288 if (stub_name == NULL)
4291 len = sprintf (stub_name, "%08x.%s+%x",
4292 input_section->id & 0xffffffff,
4293 h->elf.root.root.string,
4294 (int) rel->r_addend & 0xffffffff);
4298 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4299 stub_name = bfd_malloc (len);
4300 if (stub_name == NULL)
4303 len = sprintf (stub_name, "%08x.%x:%x+%x",
4304 input_section->id & 0xffffffff,
4305 sym_sec->id & 0xffffffff,
4306 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4307 (int) rel->r_addend & 0xffffffff);
4309 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4310 stub_name[len - 2] = 0;
4314 /* Look up an entry in the stub hash. Stub entries are cached because
4315 creating the stub name takes a bit of time. */
4317 static struct ppc_stub_hash_entry *
4318 ppc_get_stub_entry (const asection *input_section,
4319 const asection *sym_sec,
4320 struct ppc_link_hash_entry *h,
4321 const Elf_Internal_Rela *rel,
4322 struct ppc_link_hash_table *htab)
4324 struct ppc_stub_hash_entry *stub_entry;
4325 const asection *id_sec;
4327 /* If this input section is part of a group of sections sharing one
4328 stub section, then use the id of the first section in the group.
4329 Stub names need to include a section id, as there may well be
4330 more than one stub used to reach say, printf, and we need to
4331 distinguish between them. */
4332 id_sec = htab->stub_group[input_section->id].link_sec;
4334 if (h != NULL && h->u.stub_cache != NULL
4335 && h->u.stub_cache->h == h
4336 && h->u.stub_cache->id_sec == id_sec)
4338 stub_entry = h->u.stub_cache;
4344 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4345 if (stub_name == NULL)
4348 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4349 stub_name, FALSE, FALSE);
4351 h->u.stub_cache = stub_entry;
4359 /* Add a new stub entry to the stub hash. Not all fields of the new
4360 stub entry are initialised. */
4362 static struct ppc_stub_hash_entry *
4363 ppc_add_stub (const char *stub_name,
4365 struct bfd_link_info *info)
4367 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4370 struct ppc_stub_hash_entry *stub_entry;
4372 link_sec = htab->stub_group[section->id].link_sec;
4373 stub_sec = htab->stub_group[section->id].stub_sec;
4374 if (stub_sec == NULL)
4376 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4377 if (stub_sec == NULL)
4383 namelen = strlen (link_sec->name);
4384 len = namelen + sizeof (STUB_SUFFIX);
4385 s_name = bfd_alloc (htab->stub_bfd, len);
4389 memcpy (s_name, link_sec->name, namelen);
4390 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4391 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4392 if (stub_sec == NULL)
4394 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4396 htab->stub_group[section->id].stub_sec = stub_sec;
4399 /* Enter this entry into the linker stub hash table. */
4400 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4402 if (stub_entry == NULL)
4404 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4405 section->owner, stub_name);
4409 stub_entry->stub_sec = stub_sec;
4410 stub_entry->stub_offset = 0;
4411 stub_entry->id_sec = link_sec;
4415 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4416 not already done. */
4419 create_got_section (bfd *abfd, struct bfd_link_info *info)
4421 asection *got, *relgot;
4423 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4425 if (!is_ppc64_elf (abfd))
4432 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4435 htab->got = bfd_get_linker_section (htab->elf.dynobj, ".got");
4440 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4441 | SEC_LINKER_CREATED);
4443 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4445 || !bfd_set_section_alignment (abfd, got, 3))
4448 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4449 flags | SEC_READONLY);
4451 || ! bfd_set_section_alignment (abfd, relgot, 3))
4454 ppc64_elf_tdata (abfd)->got = got;
4455 ppc64_elf_tdata (abfd)->relgot = relgot;
4459 /* Create the dynamic sections, and set up shortcuts. */
4462 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4464 struct ppc_link_hash_table *htab;
4466 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4469 htab = ppc_hash_table (info);
4474 htab->got = bfd_get_linker_section (dynobj, ".got");
4475 htab->plt = bfd_get_linker_section (dynobj, ".plt");
4476 htab->relplt = bfd_get_linker_section (dynobj, ".rela.plt");
4477 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4479 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4481 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4482 || (!info->shared && !htab->relbss))
4488 /* Follow indirect and warning symbol links. */
4490 static inline struct bfd_link_hash_entry *
4491 follow_link (struct bfd_link_hash_entry *h)
4493 while (h->type == bfd_link_hash_indirect
4494 || h->type == bfd_link_hash_warning)
4499 static inline struct elf_link_hash_entry *
4500 elf_follow_link (struct elf_link_hash_entry *h)
4502 return (struct elf_link_hash_entry *) follow_link (&h->root);
4505 static inline struct ppc_link_hash_entry *
4506 ppc_follow_link (struct ppc_link_hash_entry *h)
4508 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4511 /* Merge PLT info on FROM with that on TO. */
4514 move_plt_plist (struct ppc_link_hash_entry *from,
4515 struct ppc_link_hash_entry *to)
4517 if (from->elf.plt.plist != NULL)
4519 if (to->elf.plt.plist != NULL)
4521 struct plt_entry **entp;
4522 struct plt_entry *ent;
4524 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4526 struct plt_entry *dent;
4528 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4529 if (dent->addend == ent->addend)
4531 dent->plt.refcount += ent->plt.refcount;
4538 *entp = to->elf.plt.plist;
4541 to->elf.plt.plist = from->elf.plt.plist;
4542 from->elf.plt.plist = NULL;
4546 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4549 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4550 struct elf_link_hash_entry *dir,
4551 struct elf_link_hash_entry *ind)
4553 struct ppc_link_hash_entry *edir, *eind;
4555 edir = (struct ppc_link_hash_entry *) dir;
4556 eind = (struct ppc_link_hash_entry *) ind;
4558 edir->is_func |= eind->is_func;
4559 edir->is_func_descriptor |= eind->is_func_descriptor;
4560 edir->tls_mask |= eind->tls_mask;
4561 if (eind->oh != NULL)
4562 edir->oh = ppc_follow_link (eind->oh);
4564 /* If called to transfer flags for a weakdef during processing
4565 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4566 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4567 if (!(ELIMINATE_COPY_RELOCS
4568 && eind->elf.root.type != bfd_link_hash_indirect
4569 && edir->elf.dynamic_adjusted))
4570 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4572 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4573 edir->elf.ref_regular |= eind->elf.ref_regular;
4574 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4575 edir->elf.needs_plt |= eind->elf.needs_plt;
4577 /* Copy over any dynamic relocs we may have on the indirect sym. */
4578 if (eind->dyn_relocs != NULL)
4580 if (edir->dyn_relocs != NULL)
4582 struct elf_dyn_relocs **pp;
4583 struct elf_dyn_relocs *p;
4585 /* Add reloc counts against the indirect sym to the direct sym
4586 list. Merge any entries against the same section. */
4587 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4589 struct elf_dyn_relocs *q;
4591 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4592 if (q->sec == p->sec)
4594 q->pc_count += p->pc_count;
4595 q->count += p->count;
4602 *pp = edir->dyn_relocs;
4605 edir->dyn_relocs = eind->dyn_relocs;
4606 eind->dyn_relocs = NULL;
4609 /* If we were called to copy over info for a weak sym, that's all.
4610 You might think dyn_relocs need not be copied over; After all,
4611 both syms will be dynamic or both non-dynamic so we're just
4612 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4613 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4614 dyn_relocs in read-only sections, and it does so on what is the
4616 if (eind->elf.root.type != bfd_link_hash_indirect)
4619 /* Copy over got entries that we may have already seen to the
4620 symbol which just became indirect. */
4621 if (eind->elf.got.glist != NULL)
4623 if (edir->elf.got.glist != NULL)
4625 struct got_entry **entp;
4626 struct got_entry *ent;
4628 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4630 struct got_entry *dent;
4632 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4633 if (dent->addend == ent->addend
4634 && dent->owner == ent->owner
4635 && dent->tls_type == ent->tls_type)
4637 dent->got.refcount += ent->got.refcount;
4644 *entp = edir->elf.got.glist;
4647 edir->elf.got.glist = eind->elf.got.glist;
4648 eind->elf.got.glist = NULL;
4651 /* And plt entries. */
4652 move_plt_plist (eind, edir);
4654 if (eind->elf.dynindx != -1)
4656 if (edir->elf.dynindx != -1)
4657 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4658 edir->elf.dynstr_index);
4659 edir->elf.dynindx = eind->elf.dynindx;
4660 edir->elf.dynstr_index = eind->elf.dynstr_index;
4661 eind->elf.dynindx = -1;
4662 eind->elf.dynstr_index = 0;
4666 /* Find the function descriptor hash entry from the given function code
4667 hash entry FH. Link the entries via their OH fields. */
4669 static struct ppc_link_hash_entry *
4670 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4672 struct ppc_link_hash_entry *fdh = fh->oh;
4676 const char *fd_name = fh->elf.root.root.string + 1;
4678 fdh = (struct ppc_link_hash_entry *)
4679 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4683 fdh->is_func_descriptor = 1;
4689 return ppc_follow_link (fdh);
4692 /* Make a fake function descriptor sym for the code sym FH. */
4694 static struct ppc_link_hash_entry *
4695 make_fdh (struct bfd_link_info *info,
4696 struct ppc_link_hash_entry *fh)
4700 struct bfd_link_hash_entry *bh;
4701 struct ppc_link_hash_entry *fdh;
4703 abfd = fh->elf.root.u.undef.abfd;
4704 newsym = bfd_make_empty_symbol (abfd);
4705 newsym->name = fh->elf.root.root.string + 1;
4706 newsym->section = bfd_und_section_ptr;
4708 newsym->flags = BSF_WEAK;
4711 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4712 newsym->flags, newsym->section,
4713 newsym->value, NULL, FALSE, FALSE,
4717 fdh = (struct ppc_link_hash_entry *) bh;
4718 fdh->elf.non_elf = 0;
4720 fdh->is_func_descriptor = 1;
4727 /* Fix function descriptor symbols defined in .opd sections to be
4731 ppc64_elf_add_symbol_hook (bfd *ibfd,
4732 struct bfd_link_info *info,
4733 Elf_Internal_Sym *isym,
4734 const char **name ATTRIBUTE_UNUSED,
4735 flagword *flags ATTRIBUTE_UNUSED,
4737 bfd_vma *value ATTRIBUTE_UNUSED)
4739 if ((ibfd->flags & DYNAMIC) == 0
4740 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4741 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4743 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4745 if ((ibfd->flags & DYNAMIC) == 0)
4746 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4748 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4750 else if (*sec != NULL
4751 && strcmp ((*sec)->name, ".opd") == 0)
4752 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4757 /* This function makes an old ABI object reference to ".bar" cause the
4758 inclusion of a new ABI object archive that defines "bar".
4759 NAME is a symbol defined in an archive. Return a symbol in the hash
4760 table that might be satisfied by the archive symbols. */
4762 static struct elf_link_hash_entry *
4763 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4764 struct bfd_link_info *info,
4767 struct elf_link_hash_entry *h;
4771 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4773 /* Don't return this sym if it is a fake function descriptor
4774 created by add_symbol_adjust. */
4775 && !(h->root.type == bfd_link_hash_undefweak
4776 && ((struct ppc_link_hash_entry *) h)->fake))
4782 len = strlen (name);
4783 dot_name = bfd_alloc (abfd, len + 2);
4784 if (dot_name == NULL)
4785 return (struct elf_link_hash_entry *) 0 - 1;
4787 memcpy (dot_name + 1, name, len + 1);
4788 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4789 bfd_release (abfd, dot_name);
4793 /* This function satisfies all old ABI object references to ".bar" if a
4794 new ABI object defines "bar". Well, at least, undefined dot symbols
4795 are made weak. This stops later archive searches from including an
4796 object if we already have a function descriptor definition. It also
4797 prevents the linker complaining about undefined symbols.
4798 We also check and correct mismatched symbol visibility here. The
4799 most restrictive visibility of the function descriptor and the
4800 function entry symbol is used. */
4803 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4805 struct ppc_link_hash_table *htab;
4806 struct ppc_link_hash_entry *fdh;
4808 if (eh->elf.root.type == bfd_link_hash_indirect)
4811 if (eh->elf.root.type == bfd_link_hash_warning)
4812 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4814 if (eh->elf.root.root.string[0] != '.')
4817 htab = ppc_hash_table (info);
4821 fdh = lookup_fdh (eh, htab);
4824 if (!info->relocatable
4825 && (eh->elf.root.type == bfd_link_hash_undefined
4826 || eh->elf.root.type == bfd_link_hash_undefweak)
4827 && eh->elf.ref_regular)
4829 /* Make an undefweak function descriptor sym, which is enough to
4830 pull in an --as-needed shared lib, but won't cause link
4831 errors. Archives are handled elsewhere. */
4832 fdh = make_fdh (info, eh);
4835 fdh->elf.ref_regular = 1;
4840 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4841 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4842 if (entry_vis < descr_vis)
4843 fdh->elf.other += entry_vis - descr_vis;
4844 else if (entry_vis > descr_vis)
4845 eh->elf.other += descr_vis - entry_vis;
4847 if ((fdh->elf.root.type == bfd_link_hash_defined
4848 || fdh->elf.root.type == bfd_link_hash_defweak)
4849 && eh->elf.root.type == bfd_link_hash_undefined)
4851 eh->elf.root.type = bfd_link_hash_undefweak;
4852 eh->was_undefined = 1;
4853 htab->twiddled_syms = 1;
4860 /* Process list of dot-symbols we made in link_hash_newfunc. */
4863 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4865 struct ppc_link_hash_table *htab;
4866 struct ppc_link_hash_entry **p, *eh;
4868 if (!is_ppc64_elf (info->output_bfd))
4870 htab = ppc_hash_table (info);
4874 if (is_ppc64_elf (ibfd))
4876 p = &htab->dot_syms;
4877 while ((eh = *p) != NULL)
4880 if (&eh->elf == htab->elf.hgot)
4882 else if (htab->elf.hgot == NULL
4883 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
4884 htab->elf.hgot = &eh->elf;
4885 else if (!add_symbol_adjust (eh, info))
4887 p = &eh->u.next_dot_sym;
4891 /* Clear the list for non-ppc64 input files. */
4892 p = &htab->dot_syms;
4893 while ((eh = *p) != NULL)
4896 p = &eh->u.next_dot_sym;
4899 /* We need to fix the undefs list for any syms we have twiddled to
4901 if (htab->twiddled_syms)
4903 bfd_link_repair_undef_list (&htab->elf.root);
4904 htab->twiddled_syms = 0;
4909 /* Undo hash table changes when an --as-needed input file is determined
4910 not to be needed. */
4913 ppc64_elf_notice_as_needed (bfd *ibfd,
4914 struct bfd_link_info *info,
4915 enum notice_asneeded_action act)
4917 if (act == notice_not_needed)
4919 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4924 htab->dot_syms = NULL;
4926 return _bfd_elf_notice_as_needed (ibfd, info, act);
4929 /* If --just-symbols against a final linked binary, then assume we need
4930 toc adjusting stubs when calling functions defined there. */
4933 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4935 if ((sec->flags & SEC_CODE) != 0
4936 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
4937 && is_ppc64_elf (sec->owner))
4939 asection *got = bfd_get_section_by_name (sec->owner, ".got");
4941 && got->size >= elf_backend_got_header_size
4942 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
4943 sec->has_toc_reloc = 1;
4945 _bfd_elf_link_just_syms (sec, info);
4948 static struct plt_entry **
4949 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4950 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4952 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4953 struct plt_entry **local_plt;
4954 unsigned char *local_got_tls_masks;
4956 if (local_got_ents == NULL)
4958 bfd_size_type size = symtab_hdr->sh_info;
4960 size *= (sizeof (*local_got_ents)
4961 + sizeof (*local_plt)
4962 + sizeof (*local_got_tls_masks));
4963 local_got_ents = bfd_zalloc (abfd, size);
4964 if (local_got_ents == NULL)
4966 elf_local_got_ents (abfd) = local_got_ents;
4969 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4971 struct got_entry *ent;
4973 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4974 if (ent->addend == r_addend
4975 && ent->owner == abfd
4976 && ent->tls_type == tls_type)
4980 bfd_size_type amt = sizeof (*ent);
4981 ent = bfd_alloc (abfd, amt);
4984 ent->next = local_got_ents[r_symndx];
4985 ent->addend = r_addend;
4987 ent->tls_type = tls_type;
4988 ent->is_indirect = FALSE;
4989 ent->got.refcount = 0;
4990 local_got_ents[r_symndx] = ent;
4992 ent->got.refcount += 1;
4995 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4996 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
4997 local_got_tls_masks[r_symndx] |= tls_type;
4999 return local_plt + r_symndx;
5003 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5005 struct plt_entry *ent;
5007 for (ent = *plist; ent != NULL; ent = ent->next)
5008 if (ent->addend == addend)
5012 bfd_size_type amt = sizeof (*ent);
5013 ent = bfd_alloc (abfd, amt);
5017 ent->addend = addend;
5018 ent->plt.refcount = 0;
5021 ent->plt.refcount += 1;
5026 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5028 return (r_type == R_PPC64_REL24
5029 || r_type == R_PPC64_REL14
5030 || r_type == R_PPC64_REL14_BRTAKEN
5031 || r_type == R_PPC64_REL14_BRNTAKEN
5032 || r_type == R_PPC64_ADDR24
5033 || r_type == R_PPC64_ADDR14
5034 || r_type == R_PPC64_ADDR14_BRTAKEN
5035 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5038 /* Look through the relocs for a section during the first phase, and
5039 calculate needed space in the global offset table, procedure
5040 linkage table, and dynamic reloc sections. */
5043 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5044 asection *sec, const Elf_Internal_Rela *relocs)
5046 struct ppc_link_hash_table *htab;
5047 Elf_Internal_Shdr *symtab_hdr;
5048 struct elf_link_hash_entry **sym_hashes;
5049 const Elf_Internal_Rela *rel;
5050 const Elf_Internal_Rela *rel_end;
5052 asection **opd_sym_map;
5053 struct elf_link_hash_entry *tga, *dottga;
5055 if (info->relocatable)
5058 /* Don't do anything special with non-loaded, non-alloced sections.
5059 In particular, any relocs in such sections should not affect GOT
5060 and PLT reference counting (ie. we don't allow them to create GOT
5061 or PLT entries), there's no possibility or desire to optimize TLS
5062 relocs, and there's not much point in propagating relocs to shared
5063 libs that the dynamic linker won't relocate. */
5064 if ((sec->flags & SEC_ALLOC) == 0)
5067 BFD_ASSERT (is_ppc64_elf (abfd));
5069 htab = ppc_hash_table (info);
5073 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5074 FALSE, FALSE, TRUE);
5075 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5076 FALSE, FALSE, TRUE);
5077 symtab_hdr = &elf_symtab_hdr (abfd);
5078 sym_hashes = elf_sym_hashes (abfd);
5081 if (strcmp (sec->name, ".opd") == 0)
5083 /* Garbage collection needs some extra help with .opd sections.
5084 We don't want to necessarily keep everything referenced by
5085 relocs in .opd, as that would keep all functions. Instead,
5086 if we reference an .opd symbol (a function descriptor), we
5087 want to keep the function code symbol's section. This is
5088 easy for global symbols, but for local syms we need to keep
5089 information about the associated function section. */
5092 amt = sec->size * sizeof (*opd_sym_map) / 8;
5093 opd_sym_map = bfd_zalloc (abfd, amt);
5094 if (opd_sym_map == NULL)
5096 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
5097 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
5098 ppc64_elf_section_data (sec)->sec_type = sec_opd;
5101 rel_end = relocs + sec->reloc_count;
5102 for (rel = relocs; rel < rel_end; rel++)
5104 unsigned long r_symndx;
5105 struct elf_link_hash_entry *h;
5106 enum elf_ppc64_reloc_type r_type;
5108 struct _ppc64_elf_section_data *ppc64_sec;
5109 struct plt_entry **ifunc;
5111 r_symndx = ELF64_R_SYM (rel->r_info);
5112 if (r_symndx < symtab_hdr->sh_info)
5116 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5117 h = elf_follow_link (h);
5119 /* PR15323, ref flags aren't set for references in the same
5121 h->root.non_ir_ref = 1;
5123 if (h == htab->elf.hgot)
5124 sec->has_toc_reloc = 1;
5131 if (h->type == STT_GNU_IFUNC)
5134 ifunc = &h->plt.plist;
5139 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5144 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5146 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5147 rel->r_addend, PLT_IFUNC);
5152 r_type = ELF64_R_TYPE (rel->r_info);
5153 if (is_branch_reloc (r_type))
5155 if (h != NULL && (h == tga || h == dottga))
5158 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5159 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5160 /* We have a new-style __tls_get_addr call with a marker
5164 /* Mark this section as having an old-style call. */
5165 sec->has_tls_get_addr_call = 1;
5168 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5170 && !update_plt_info (abfd, ifunc, rel->r_addend))
5178 /* These special tls relocs tie a call to __tls_get_addr with
5179 its parameter symbol. */
5182 case R_PPC64_GOT_TLSLD16:
5183 case R_PPC64_GOT_TLSLD16_LO:
5184 case R_PPC64_GOT_TLSLD16_HI:
5185 case R_PPC64_GOT_TLSLD16_HA:
5186 tls_type = TLS_TLS | TLS_LD;
5189 case R_PPC64_GOT_TLSGD16:
5190 case R_PPC64_GOT_TLSGD16_LO:
5191 case R_PPC64_GOT_TLSGD16_HI:
5192 case R_PPC64_GOT_TLSGD16_HA:
5193 tls_type = TLS_TLS | TLS_GD;
5196 case R_PPC64_GOT_TPREL16_DS:
5197 case R_PPC64_GOT_TPREL16_LO_DS:
5198 case R_PPC64_GOT_TPREL16_HI:
5199 case R_PPC64_GOT_TPREL16_HA:
5200 if (!info->executable)
5201 info->flags |= DF_STATIC_TLS;
5202 tls_type = TLS_TLS | TLS_TPREL;
5205 case R_PPC64_GOT_DTPREL16_DS:
5206 case R_PPC64_GOT_DTPREL16_LO_DS:
5207 case R_PPC64_GOT_DTPREL16_HI:
5208 case R_PPC64_GOT_DTPREL16_HA:
5209 tls_type = TLS_TLS | TLS_DTPREL;
5211 sec->has_tls_reloc = 1;
5215 case R_PPC64_GOT16_DS:
5216 case R_PPC64_GOT16_HA:
5217 case R_PPC64_GOT16_HI:
5218 case R_PPC64_GOT16_LO:
5219 case R_PPC64_GOT16_LO_DS:
5220 /* This symbol requires a global offset table entry. */
5221 sec->has_toc_reloc = 1;
5222 if (r_type == R_PPC64_GOT_TLSLD16
5223 || r_type == R_PPC64_GOT_TLSGD16
5224 || r_type == R_PPC64_GOT_TPREL16_DS
5225 || r_type == R_PPC64_GOT_DTPREL16_DS
5226 || r_type == R_PPC64_GOT16
5227 || r_type == R_PPC64_GOT16_DS)
5229 htab->do_multi_toc = 1;
5230 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5233 if (ppc64_elf_tdata (abfd)->got == NULL
5234 && !create_got_section (abfd, info))
5239 struct ppc_link_hash_entry *eh;
5240 struct got_entry *ent;
5242 eh = (struct ppc_link_hash_entry *) h;
5243 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5244 if (ent->addend == rel->r_addend
5245 && ent->owner == abfd
5246 && ent->tls_type == tls_type)
5250 bfd_size_type amt = sizeof (*ent);
5251 ent = bfd_alloc (abfd, amt);
5254 ent->next = eh->elf.got.glist;
5255 ent->addend = rel->r_addend;
5257 ent->tls_type = tls_type;
5258 ent->is_indirect = FALSE;
5259 ent->got.refcount = 0;
5260 eh->elf.got.glist = ent;
5262 ent->got.refcount += 1;
5263 eh->tls_mask |= tls_type;
5266 /* This is a global offset table entry for a local symbol. */
5267 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5268 rel->r_addend, tls_type))
5272 case R_PPC64_PLT16_HA:
5273 case R_PPC64_PLT16_HI:
5274 case R_PPC64_PLT16_LO:
5277 /* This symbol requires a procedure linkage table entry. We
5278 actually build the entry in adjust_dynamic_symbol,
5279 because this might be a case of linking PIC code without
5280 linking in any dynamic objects, in which case we don't
5281 need to generate a procedure linkage table after all. */
5284 /* It does not make sense to have a procedure linkage
5285 table entry for a local symbol. */
5286 bfd_set_error (bfd_error_bad_value);
5291 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5294 if (h->root.root.string[0] == '.'
5295 && h->root.root.string[1] != '\0')
5296 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5300 /* The following relocations don't need to propagate the
5301 relocation if linking a shared object since they are
5302 section relative. */
5303 case R_PPC64_SECTOFF:
5304 case R_PPC64_SECTOFF_LO:
5305 case R_PPC64_SECTOFF_HI:
5306 case R_PPC64_SECTOFF_HA:
5307 case R_PPC64_SECTOFF_DS:
5308 case R_PPC64_SECTOFF_LO_DS:
5309 case R_PPC64_DTPREL16:
5310 case R_PPC64_DTPREL16_LO:
5311 case R_PPC64_DTPREL16_HI:
5312 case R_PPC64_DTPREL16_HA:
5313 case R_PPC64_DTPREL16_DS:
5314 case R_PPC64_DTPREL16_LO_DS:
5315 case R_PPC64_DTPREL16_HIGH:
5316 case R_PPC64_DTPREL16_HIGHA:
5317 case R_PPC64_DTPREL16_HIGHER:
5318 case R_PPC64_DTPREL16_HIGHERA:
5319 case R_PPC64_DTPREL16_HIGHEST:
5320 case R_PPC64_DTPREL16_HIGHESTA:
5325 case R_PPC64_REL16_LO:
5326 case R_PPC64_REL16_HI:
5327 case R_PPC64_REL16_HA:
5331 case R_PPC64_TOC16_DS:
5332 htab->do_multi_toc = 1;
5333 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5334 case R_PPC64_TOC16_LO:
5335 case R_PPC64_TOC16_HI:
5336 case R_PPC64_TOC16_HA:
5337 case R_PPC64_TOC16_LO_DS:
5338 sec->has_toc_reloc = 1;
5341 /* This relocation describes the C++ object vtable hierarchy.
5342 Reconstruct it for later use during GC. */
5343 case R_PPC64_GNU_VTINHERIT:
5344 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5348 /* This relocation describes which C++ vtable entries are actually
5349 used. Record for later use during GC. */
5350 case R_PPC64_GNU_VTENTRY:
5351 BFD_ASSERT (h != NULL);
5353 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5358 case R_PPC64_REL14_BRTAKEN:
5359 case R_PPC64_REL14_BRNTAKEN:
5361 asection *dest = NULL;
5363 /* Heuristic: If jumping outside our section, chances are
5364 we are going to need a stub. */
5367 /* If the sym is weak it may be overridden later, so
5368 don't assume we know where a weak sym lives. */
5369 if (h->root.type == bfd_link_hash_defined)
5370 dest = h->root.u.def.section;
5374 Elf_Internal_Sym *isym;
5376 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5381 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5385 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5390 if (h != NULL && ifunc == NULL)
5392 /* We may need a .plt entry if the function this reloc
5393 refers to is in a shared lib. */
5394 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5397 if (h->root.root.string[0] == '.'
5398 && h->root.root.string[1] != '\0')
5399 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5400 if (h == tga || h == dottga)
5401 sec->has_tls_reloc = 1;
5405 case R_PPC64_TPREL64:
5406 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5407 if (!info->executable)
5408 info->flags |= DF_STATIC_TLS;
5411 case R_PPC64_DTPMOD64:
5412 if (rel + 1 < rel_end
5413 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5414 && rel[1].r_offset == rel->r_offset + 8)
5415 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5417 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5420 case R_PPC64_DTPREL64:
5421 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5423 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5424 && rel[-1].r_offset == rel->r_offset - 8)
5425 /* This is the second reloc of a dtpmod, dtprel pair.
5426 Don't mark with TLS_DTPREL. */
5430 sec->has_tls_reloc = 1;
5433 struct ppc_link_hash_entry *eh;
5434 eh = (struct ppc_link_hash_entry *) h;
5435 eh->tls_mask |= tls_type;
5438 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5439 rel->r_addend, tls_type))
5442 ppc64_sec = ppc64_elf_section_data (sec);
5443 if (ppc64_sec->sec_type != sec_toc)
5447 /* One extra to simplify get_tls_mask. */
5448 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5449 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5450 if (ppc64_sec->u.toc.symndx == NULL)
5452 amt = sec->size * sizeof (bfd_vma) / 8;
5453 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5454 if (ppc64_sec->u.toc.add == NULL)
5456 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5457 ppc64_sec->sec_type = sec_toc;
5459 BFD_ASSERT (rel->r_offset % 8 == 0);
5460 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5461 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5463 /* Mark the second slot of a GD or LD entry.
5464 -1 to indicate GD and -2 to indicate LD. */
5465 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5466 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5467 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5468 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5471 case R_PPC64_TPREL16:
5472 case R_PPC64_TPREL16_LO:
5473 case R_PPC64_TPREL16_HI:
5474 case R_PPC64_TPREL16_HA:
5475 case R_PPC64_TPREL16_DS:
5476 case R_PPC64_TPREL16_LO_DS:
5477 case R_PPC64_TPREL16_HIGH:
5478 case R_PPC64_TPREL16_HIGHA:
5479 case R_PPC64_TPREL16_HIGHER:
5480 case R_PPC64_TPREL16_HIGHERA:
5481 case R_PPC64_TPREL16_HIGHEST:
5482 case R_PPC64_TPREL16_HIGHESTA:
5485 if (!info->executable)
5486 info->flags |= DF_STATIC_TLS;
5491 case R_PPC64_ADDR64:
5492 if (opd_sym_map != NULL
5493 && rel + 1 < rel_end
5494 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5498 if (h->root.root.string[0] == '.'
5499 && h->root.root.string[1] != 0
5500 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5503 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5508 Elf_Internal_Sym *isym;
5510 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5515 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5516 if (s != NULL && s != sec)
5517 opd_sym_map[rel->r_offset / 8] = s;
5525 case R_PPC64_ADDR14:
5526 case R_PPC64_ADDR14_BRNTAKEN:
5527 case R_PPC64_ADDR14_BRTAKEN:
5528 case R_PPC64_ADDR16:
5529 case R_PPC64_ADDR16_DS:
5530 case R_PPC64_ADDR16_HA:
5531 case R_PPC64_ADDR16_HI:
5532 case R_PPC64_ADDR16_HIGH:
5533 case R_PPC64_ADDR16_HIGHA:
5534 case R_PPC64_ADDR16_HIGHER:
5535 case R_PPC64_ADDR16_HIGHERA:
5536 case R_PPC64_ADDR16_HIGHEST:
5537 case R_PPC64_ADDR16_HIGHESTA:
5538 case R_PPC64_ADDR16_LO:
5539 case R_PPC64_ADDR16_LO_DS:
5540 case R_PPC64_ADDR24:
5541 case R_PPC64_ADDR32:
5542 case R_PPC64_UADDR16:
5543 case R_PPC64_UADDR32:
5544 case R_PPC64_UADDR64:
5546 if (h != NULL && !info->shared)
5547 /* We may need a copy reloc. */
5550 /* Don't propagate .opd relocs. */
5551 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5554 /* If we are creating a shared library, and this is a reloc
5555 against a global symbol, or a non PC relative reloc
5556 against a local symbol, then we need to copy the reloc
5557 into the shared library. However, if we are linking with
5558 -Bsymbolic, we do not need to copy a reloc against a
5559 global symbol which is defined in an object we are
5560 including in the link (i.e., DEF_REGULAR is set). At
5561 this point we have not seen all the input files, so it is
5562 possible that DEF_REGULAR is not set now but will be set
5563 later (it is never cleared). In case of a weak definition,
5564 DEF_REGULAR may be cleared later by a strong definition in
5565 a shared library. We account for that possibility below by
5566 storing information in the dyn_relocs field of the hash
5567 table entry. A similar situation occurs when creating
5568 shared libraries and symbol visibility changes render the
5571 If on the other hand, we are creating an executable, we
5572 may need to keep relocations for symbols satisfied by a
5573 dynamic library if we manage to avoid copy relocs for the
5577 && (must_be_dyn_reloc (info, r_type)
5579 && (!SYMBOLIC_BIND (info, h)
5580 || h->root.type == bfd_link_hash_defweak
5581 || !h->def_regular))))
5582 || (ELIMINATE_COPY_RELOCS
5585 && (h->root.type == bfd_link_hash_defweak
5586 || !h->def_regular))
5590 /* We must copy these reloc types into the output file.
5591 Create a reloc section in dynobj and make room for
5595 sreloc = _bfd_elf_make_dynamic_reloc_section
5596 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5602 /* If this is a global symbol, we count the number of
5603 relocations we need for this symbol. */
5606 struct elf_dyn_relocs *p;
5607 struct elf_dyn_relocs **head;
5609 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5611 if (p == NULL || p->sec != sec)
5613 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5623 if (!must_be_dyn_reloc (info, r_type))
5628 /* Track dynamic relocs needed for local syms too.
5629 We really need local syms available to do this
5631 struct ppc_dyn_relocs *p;
5632 struct ppc_dyn_relocs **head;
5633 bfd_boolean is_ifunc;
5636 Elf_Internal_Sym *isym;
5638 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5643 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5647 vpp = &elf_section_data (s)->local_dynrel;
5648 head = (struct ppc_dyn_relocs **) vpp;
5649 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5651 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5653 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5655 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5661 p->ifunc = is_ifunc;
5677 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5678 of the code entry point, and its section. */
5681 opd_entry_value (asection *opd_sec,
5683 asection **code_sec,
5685 bfd_boolean in_code_sec)
5687 bfd *opd_bfd = opd_sec->owner;
5688 Elf_Internal_Rela *relocs;
5689 Elf_Internal_Rela *lo, *hi, *look;
5692 /* No relocs implies we are linking a --just-symbols object, or looking
5693 at a final linked executable with addr2line or somesuch. */
5694 if (opd_sec->reloc_count == 0)
5696 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5698 if (contents == NULL)
5700 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5701 return (bfd_vma) -1;
5702 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5705 val = bfd_get_64 (opd_bfd, contents + offset);
5706 if (code_sec != NULL)
5708 asection *sec, *likely = NULL;
5714 && val < sec->vma + sec->size)
5720 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5722 && (sec->flags & SEC_LOAD) != 0
5723 && (sec->flags & SEC_ALLOC) != 0)
5728 if (code_off != NULL)
5729 *code_off = val - likely->vma;
5735 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5737 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5739 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5741 /* Go find the opd reloc at the sym address. */
5743 BFD_ASSERT (lo != NULL);
5744 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5748 look = lo + (hi - lo) / 2;
5749 if (look->r_offset < offset)
5751 else if (look->r_offset > offset)
5755 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5757 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5758 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5760 unsigned long symndx = ELF64_R_SYM (look->r_info);
5763 if (symndx < symtab_hdr->sh_info
5764 || elf_sym_hashes (opd_bfd) == NULL)
5766 Elf_Internal_Sym *sym;
5768 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5771 size_t symcnt = symtab_hdr->sh_info;
5772 if (elf_sym_hashes (opd_bfd) == NULL)
5773 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5774 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5775 0, NULL, NULL, NULL);
5778 symtab_hdr->contents = (bfd_byte *) sym;
5782 val = sym->st_value;
5783 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5784 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5788 struct elf_link_hash_entry **sym_hashes;
5789 struct elf_link_hash_entry *rh;
5791 sym_hashes = elf_sym_hashes (opd_bfd);
5792 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5795 rh = elf_follow_link (rh);
5796 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5797 || rh->root.type == bfd_link_hash_defweak);
5798 val = rh->root.u.def.value;
5799 sec = rh->root.u.def.section;
5803 /* Handle the odd case where we can be called
5804 during bfd_elf_link_add_symbols before the
5805 symbol hashes have been fully populated. */
5806 Elf_Internal_Sym *sym;
5808 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
5809 symndx, NULL, NULL, NULL);
5813 val = sym->st_value;
5814 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5818 val += look->r_addend;
5819 if (code_off != NULL)
5821 if (code_sec != NULL)
5823 if (in_code_sec && *code_sec != sec)
5828 if (sec != NULL && sec->output_section != NULL)
5829 val += sec->output_section->vma + sec->output_offset;
5838 /* If the ELF symbol SYM might be a function in SEC, return the
5839 function size and set *CODE_OFF to the function's entry point,
5840 otherwise return zero. */
5842 static bfd_size_type
5843 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
5848 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
5849 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
5853 if (!(sym->flags & BSF_SYNTHETIC))
5854 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
5856 if (strcmp (sym->section->name, ".opd") == 0)
5858 if (opd_entry_value (sym->section, sym->value,
5859 &sec, code_off, TRUE) == (bfd_vma) -1)
5861 /* An old ABI binary with dot-syms has a size of 24 on the .opd
5862 symbol. This size has nothing to do with the code size of the
5863 function, which is what we're supposed to return, but the
5864 code size isn't available without looking up the dot-sym.
5865 However, doing that would be a waste of time particularly
5866 since elf_find_function will look at the dot-sym anyway.
5867 Now, elf_find_function will keep the largest size of any
5868 function sym found at the code address of interest, so return
5869 1 here to avoid it incorrectly caching a larger function size
5870 for a small function. This does mean we return the wrong
5871 size for a new-ABI function of size 24, but all that does is
5872 disable caching for such functions. */
5878 if (sym->section != sec)
5880 *code_off = sym->value;
5887 /* Return true if symbol is defined in a regular object file. */
5890 is_static_defined (struct elf_link_hash_entry *h)
5892 return ((h->root.type == bfd_link_hash_defined
5893 || h->root.type == bfd_link_hash_defweak)
5894 && h->root.u.def.section != NULL
5895 && h->root.u.def.section->output_section != NULL);
5898 /* If FDH is a function descriptor symbol, return the associated code
5899 entry symbol if it is defined. Return NULL otherwise. */
5901 static struct ppc_link_hash_entry *
5902 defined_code_entry (struct ppc_link_hash_entry *fdh)
5904 if (fdh->is_func_descriptor)
5906 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5907 if (fh->elf.root.type == bfd_link_hash_defined
5908 || fh->elf.root.type == bfd_link_hash_defweak)
5914 /* If FH is a function code entry symbol, return the associated
5915 function descriptor symbol if it is defined. Return NULL otherwise. */
5917 static struct ppc_link_hash_entry *
5918 defined_func_desc (struct ppc_link_hash_entry *fh)
5921 && fh->oh->is_func_descriptor)
5923 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5924 if (fdh->elf.root.type == bfd_link_hash_defined
5925 || fdh->elf.root.type == bfd_link_hash_defweak)
5931 /* Mark all our entry sym sections, both opd and code section. */
5934 ppc64_elf_gc_keep (struct bfd_link_info *info)
5936 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5937 struct bfd_sym_chain *sym;
5942 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5944 struct ppc_link_hash_entry *eh, *fh;
5947 eh = (struct ppc_link_hash_entry *)
5948 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5951 if (eh->elf.root.type != bfd_link_hash_defined
5952 && eh->elf.root.type != bfd_link_hash_defweak)
5955 fh = defined_code_entry (eh);
5958 sec = fh->elf.root.u.def.section;
5959 sec->flags |= SEC_KEEP;
5961 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5962 && opd_entry_value (eh->elf.root.u.def.section,
5963 eh->elf.root.u.def.value,
5964 &sec, NULL, FALSE) != (bfd_vma) -1)
5965 sec->flags |= SEC_KEEP;
5967 sec = eh->elf.root.u.def.section;
5968 sec->flags |= SEC_KEEP;
5972 /* Mark sections containing dynamically referenced symbols. When
5973 building shared libraries, we must assume that any visible symbol is
5977 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5979 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5980 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5981 struct ppc_link_hash_entry *fdh;
5983 /* Dynamic linking info is on the func descriptor sym. */
5984 fdh = defined_func_desc (eh);
5988 if ((eh->elf.root.type == bfd_link_hash_defined
5989 || eh->elf.root.type == bfd_link_hash_defweak)
5990 && (eh->elf.ref_dynamic
5991 || (!info->executable
5992 && eh->elf.def_regular
5993 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5994 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
5995 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
5996 || !bfd_hide_sym_by_version (info->version_info,
5997 eh->elf.root.root.string)))))
6000 struct ppc_link_hash_entry *fh;
6002 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6004 /* Function descriptor syms cause the associated
6005 function code sym section to be marked. */
6006 fh = defined_code_entry (eh);
6009 code_sec = fh->elf.root.u.def.section;
6010 code_sec->flags |= SEC_KEEP;
6012 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6013 && opd_entry_value (eh->elf.root.u.def.section,
6014 eh->elf.root.u.def.value,
6015 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6016 code_sec->flags |= SEC_KEEP;
6022 /* Return the section that should be marked against GC for a given
6026 ppc64_elf_gc_mark_hook (asection *sec,
6027 struct bfd_link_info *info,
6028 Elf_Internal_Rela *rel,
6029 struct elf_link_hash_entry *h,
6030 Elf_Internal_Sym *sym)
6034 /* Syms return NULL if we're marking .opd, so we avoid marking all
6035 function sections, as all functions are referenced in .opd. */
6037 if (get_opd_info (sec) != NULL)
6042 enum elf_ppc64_reloc_type r_type;
6043 struct ppc_link_hash_entry *eh, *fh, *fdh;
6045 r_type = ELF64_R_TYPE (rel->r_info);
6048 case R_PPC64_GNU_VTINHERIT:
6049 case R_PPC64_GNU_VTENTRY:
6053 switch (h->root.type)
6055 case bfd_link_hash_defined:
6056 case bfd_link_hash_defweak:
6057 eh = (struct ppc_link_hash_entry *) h;
6058 fdh = defined_func_desc (eh);
6062 /* Function descriptor syms cause the associated
6063 function code sym section to be marked. */
6064 fh = defined_code_entry (eh);
6067 /* They also mark their opd section. */
6068 eh->elf.root.u.def.section->gc_mark = 1;
6070 rsec = fh->elf.root.u.def.section;
6072 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6073 && opd_entry_value (eh->elf.root.u.def.section,
6074 eh->elf.root.u.def.value,
6075 &rsec, NULL, FALSE) != (bfd_vma) -1)
6076 eh->elf.root.u.def.section->gc_mark = 1;
6078 rsec = h->root.u.def.section;
6081 case bfd_link_hash_common:
6082 rsec = h->root.u.c.p->section;
6086 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6092 struct _opd_sec_data *opd;
6094 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6095 opd = get_opd_info (rsec);
6096 if (opd != NULL && opd->func_sec != NULL)
6100 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6107 /* Update the .got, .plt. and dynamic reloc reference counts for the
6108 section being removed. */
6111 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6112 asection *sec, const Elf_Internal_Rela *relocs)
6114 struct ppc_link_hash_table *htab;
6115 Elf_Internal_Shdr *symtab_hdr;
6116 struct elf_link_hash_entry **sym_hashes;
6117 struct got_entry **local_got_ents;
6118 const Elf_Internal_Rela *rel, *relend;
6120 if (info->relocatable)
6123 if ((sec->flags & SEC_ALLOC) == 0)
6126 elf_section_data (sec)->local_dynrel = NULL;
6128 htab = ppc_hash_table (info);
6132 symtab_hdr = &elf_symtab_hdr (abfd);
6133 sym_hashes = elf_sym_hashes (abfd);
6134 local_got_ents = elf_local_got_ents (abfd);
6136 relend = relocs + sec->reloc_count;
6137 for (rel = relocs; rel < relend; rel++)
6139 unsigned long r_symndx;
6140 enum elf_ppc64_reloc_type r_type;
6141 struct elf_link_hash_entry *h = NULL;
6142 unsigned char tls_type = 0;
6144 r_symndx = ELF64_R_SYM (rel->r_info);
6145 r_type = ELF64_R_TYPE (rel->r_info);
6146 if (r_symndx >= symtab_hdr->sh_info)
6148 struct ppc_link_hash_entry *eh;
6149 struct elf_dyn_relocs **pp;
6150 struct elf_dyn_relocs *p;
6152 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6153 h = elf_follow_link (h);
6154 eh = (struct ppc_link_hash_entry *) h;
6156 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6159 /* Everything must go for SEC. */
6165 if (is_branch_reloc (r_type))
6167 struct plt_entry **ifunc = NULL;
6170 if (h->type == STT_GNU_IFUNC)
6171 ifunc = &h->plt.plist;
6173 else if (local_got_ents != NULL)
6175 struct plt_entry **local_plt = (struct plt_entry **)
6176 (local_got_ents + symtab_hdr->sh_info);
6177 unsigned char *local_got_tls_masks = (unsigned char *)
6178 (local_plt + symtab_hdr->sh_info);
6179 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6180 ifunc = local_plt + r_symndx;
6184 struct plt_entry *ent;
6186 for (ent = *ifunc; ent != NULL; ent = ent->next)
6187 if (ent->addend == rel->r_addend)
6191 if (ent->plt.refcount > 0)
6192 ent->plt.refcount -= 1;
6199 case R_PPC64_GOT_TLSLD16:
6200 case R_PPC64_GOT_TLSLD16_LO:
6201 case R_PPC64_GOT_TLSLD16_HI:
6202 case R_PPC64_GOT_TLSLD16_HA:
6203 tls_type = TLS_TLS | TLS_LD;
6206 case R_PPC64_GOT_TLSGD16:
6207 case R_PPC64_GOT_TLSGD16_LO:
6208 case R_PPC64_GOT_TLSGD16_HI:
6209 case R_PPC64_GOT_TLSGD16_HA:
6210 tls_type = TLS_TLS | TLS_GD;
6213 case R_PPC64_GOT_TPREL16_DS:
6214 case R_PPC64_GOT_TPREL16_LO_DS:
6215 case R_PPC64_GOT_TPREL16_HI:
6216 case R_PPC64_GOT_TPREL16_HA:
6217 tls_type = TLS_TLS | TLS_TPREL;
6220 case R_PPC64_GOT_DTPREL16_DS:
6221 case R_PPC64_GOT_DTPREL16_LO_DS:
6222 case R_PPC64_GOT_DTPREL16_HI:
6223 case R_PPC64_GOT_DTPREL16_HA:
6224 tls_type = TLS_TLS | TLS_DTPREL;
6228 case R_PPC64_GOT16_DS:
6229 case R_PPC64_GOT16_HA:
6230 case R_PPC64_GOT16_HI:
6231 case R_PPC64_GOT16_LO:
6232 case R_PPC64_GOT16_LO_DS:
6235 struct got_entry *ent;
6240 ent = local_got_ents[r_symndx];
6242 for (; ent != NULL; ent = ent->next)
6243 if (ent->addend == rel->r_addend
6244 && ent->owner == abfd
6245 && ent->tls_type == tls_type)
6249 if (ent->got.refcount > 0)
6250 ent->got.refcount -= 1;
6254 case R_PPC64_PLT16_HA:
6255 case R_PPC64_PLT16_HI:
6256 case R_PPC64_PLT16_LO:
6260 case R_PPC64_REL14_BRNTAKEN:
6261 case R_PPC64_REL14_BRTAKEN:
6265 struct plt_entry *ent;
6267 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6268 if (ent->addend == rel->r_addend)
6270 if (ent != NULL && ent->plt.refcount > 0)
6271 ent->plt.refcount -= 1;
6282 /* The maximum size of .sfpr. */
6283 #define SFPR_MAX (218*4)
6285 struct sfpr_def_parms
6287 const char name[12];
6288 unsigned char lo, hi;
6289 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6290 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6293 /* Auto-generate _save*, _rest* functions in .sfpr. */
6296 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6298 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6300 size_t len = strlen (parm->name);
6301 bfd_boolean writing = FALSE;
6307 memcpy (sym, parm->name, len);
6310 for (i = parm->lo; i <= parm->hi; i++)
6312 struct elf_link_hash_entry *h;
6314 sym[len + 0] = i / 10 + '0';
6315 sym[len + 1] = i % 10 + '0';
6316 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6320 h->root.type = bfd_link_hash_defined;
6321 h->root.u.def.section = htab->sfpr;
6322 h->root.u.def.value = htab->sfpr->size;
6325 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6327 if (htab->sfpr->contents == NULL)
6329 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6330 if (htab->sfpr->contents == NULL)
6336 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6338 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6340 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6341 htab->sfpr->size = p - htab->sfpr->contents;
6349 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6351 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6356 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6358 p = savegpr0 (abfd, p, r);
6359 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6361 bfd_put_32 (abfd, BLR, p);
6366 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6368 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6373 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6375 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6377 p = restgpr0 (abfd, p, r);
6378 bfd_put_32 (abfd, MTLR_R0, p);
6382 p = restgpr0 (abfd, p, 30);
6383 p = restgpr0 (abfd, p, 31);
6385 bfd_put_32 (abfd, BLR, p);
6390 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6392 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6397 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6399 p = savegpr1 (abfd, p, r);
6400 bfd_put_32 (abfd, BLR, p);
6405 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6407 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6412 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6414 p = restgpr1 (abfd, p, r);
6415 bfd_put_32 (abfd, BLR, p);
6420 savefpr (bfd *abfd, bfd_byte *p, int r)
6422 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6427 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6429 p = savefpr (abfd, p, r);
6430 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6432 bfd_put_32 (abfd, BLR, p);
6437 restfpr (bfd *abfd, bfd_byte *p, int r)
6439 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6444 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6446 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6448 p = restfpr (abfd, p, r);
6449 bfd_put_32 (abfd, MTLR_R0, p);
6453 p = restfpr (abfd, p, 30);
6454 p = restfpr (abfd, p, 31);
6456 bfd_put_32 (abfd, BLR, p);
6461 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6463 p = savefpr (abfd, p, r);
6464 bfd_put_32 (abfd, BLR, p);
6469 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6471 p = restfpr (abfd, p, r);
6472 bfd_put_32 (abfd, BLR, p);
6477 savevr (bfd *abfd, bfd_byte *p, int r)
6479 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6481 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6486 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6488 p = savevr (abfd, p, r);
6489 bfd_put_32 (abfd, BLR, p);
6494 restvr (bfd *abfd, bfd_byte *p, int r)
6496 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6498 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6503 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6505 p = restvr (abfd, p, r);
6506 bfd_put_32 (abfd, BLR, p);
6510 /* Called via elf_link_hash_traverse to transfer dynamic linking
6511 information on function code symbol entries to their corresponding
6512 function descriptor symbol entries. */
6515 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6517 struct bfd_link_info *info;
6518 struct ppc_link_hash_table *htab;
6519 struct plt_entry *ent;
6520 struct ppc_link_hash_entry *fh;
6521 struct ppc_link_hash_entry *fdh;
6522 bfd_boolean force_local;
6524 fh = (struct ppc_link_hash_entry *) h;
6525 if (fh->elf.root.type == bfd_link_hash_indirect)
6529 htab = ppc_hash_table (info);
6533 /* Resolve undefined references to dot-symbols as the value
6534 in the function descriptor, if we have one in a regular object.
6535 This is to satisfy cases like ".quad .foo". Calls to functions
6536 in dynamic objects are handled elsewhere. */
6537 if (fh->elf.root.type == bfd_link_hash_undefweak
6538 && fh->was_undefined
6539 && (fdh = defined_func_desc (fh)) != NULL
6540 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6541 && opd_entry_value (fdh->elf.root.u.def.section,
6542 fdh->elf.root.u.def.value,
6543 &fh->elf.root.u.def.section,
6544 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6546 fh->elf.root.type = fdh->elf.root.type;
6547 fh->elf.forced_local = 1;
6548 fh->elf.def_regular = fdh->elf.def_regular;
6549 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6552 /* If this is a function code symbol, transfer dynamic linking
6553 information to the function descriptor symbol. */
6557 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6558 if (ent->plt.refcount > 0)
6561 || fh->elf.root.root.string[0] != '.'
6562 || fh->elf.root.root.string[1] == '\0')
6565 /* Find the corresponding function descriptor symbol. Create it
6566 as undefined if necessary. */
6568 fdh = lookup_fdh (fh, htab);
6570 && !info->executable
6571 && (fh->elf.root.type == bfd_link_hash_undefined
6572 || fh->elf.root.type == bfd_link_hash_undefweak))
6574 fdh = make_fdh (info, fh);
6579 /* Fake function descriptors are made undefweak. If the function
6580 code symbol is strong undefined, make the fake sym the same.
6581 If the function code symbol is defined, then force the fake
6582 descriptor local; We can't support overriding of symbols in a
6583 shared library on a fake descriptor. */
6587 && fdh->elf.root.type == bfd_link_hash_undefweak)
6589 if (fh->elf.root.type == bfd_link_hash_undefined)
6591 fdh->elf.root.type = bfd_link_hash_undefined;
6592 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6594 else if (fh->elf.root.type == bfd_link_hash_defined
6595 || fh->elf.root.type == bfd_link_hash_defweak)
6597 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6602 && !fdh->elf.forced_local
6603 && (!info->executable
6604 || fdh->elf.def_dynamic
6605 || fdh->elf.ref_dynamic
6606 || (fdh->elf.root.type == bfd_link_hash_undefweak
6607 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6609 if (fdh->elf.dynindx == -1)
6610 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6612 fdh->elf.ref_regular |= fh->elf.ref_regular;
6613 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6614 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6615 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6616 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6618 move_plt_plist (fh, fdh);
6619 fdh->elf.needs_plt = 1;
6621 fdh->is_func_descriptor = 1;
6626 /* Now that the info is on the function descriptor, clear the
6627 function code sym info. Any function code syms for which we
6628 don't have a definition in a regular file, we force local.
6629 This prevents a shared library from exporting syms that have
6630 been imported from another library. Function code syms that
6631 are really in the library we must leave global to prevent the
6632 linker dragging in a definition from a static library. */
6633 force_local = (!fh->elf.def_regular
6635 || !fdh->elf.def_regular
6636 || fdh->elf.forced_local);
6637 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6642 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6643 this hook to a) provide some gcc support functions, and b) transfer
6644 dynamic linking information gathered so far on function code symbol
6645 entries, to their corresponding function descriptor symbol entries. */
6648 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6649 struct bfd_link_info *info)
6651 struct ppc_link_hash_table *htab;
6653 static const struct sfpr_def_parms funcs[] =
6655 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6656 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6657 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6658 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6659 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6660 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6661 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6662 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6663 { "._savef", 14, 31, savefpr, savefpr1_tail },
6664 { "._restf", 14, 31, restfpr, restfpr1_tail },
6665 { "_savevr_", 20, 31, savevr, savevr_tail },
6666 { "_restvr_", 20, 31, restvr, restvr_tail }
6669 htab = ppc_hash_table (info);
6673 if (!info->relocatable
6674 && htab->elf.hgot != NULL)
6675 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6677 if (htab->sfpr == NULL)
6678 /* We don't have any relocs. */
6681 /* Provide any missing _save* and _rest* functions. */
6682 htab->sfpr->size = 0;
6683 if (!info->relocatable)
6684 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6685 if (!sfpr_define (info, &funcs[i]))
6688 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6690 if (htab->sfpr->size == 0)
6691 htab->sfpr->flags |= SEC_EXCLUDE;
6696 /* Adjust a symbol defined by a dynamic object and referenced by a
6697 regular object. The current definition is in some section of the
6698 dynamic object, but we're not including those sections. We have to
6699 change the definition to something the rest of the link can
6703 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6704 struct elf_link_hash_entry *h)
6706 struct ppc_link_hash_table *htab;
6709 htab = ppc_hash_table (info);
6713 /* Deal with function syms. */
6714 if (h->type == STT_FUNC
6715 || h->type == STT_GNU_IFUNC
6718 /* Clear procedure linkage table information for any symbol that
6719 won't need a .plt entry. */
6720 struct plt_entry *ent;
6721 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6722 if (ent->plt.refcount > 0)
6725 || (h->type != STT_GNU_IFUNC
6726 && (SYMBOL_CALLS_LOCAL (info, h)
6727 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6728 && h->root.type == bfd_link_hash_undefweak))))
6730 h->plt.plist = NULL;
6735 h->plt.plist = NULL;
6737 /* If this is a weak symbol, and there is a real definition, the
6738 processor independent code will have arranged for us to see the
6739 real definition first, and we can just use the same value. */
6740 if (h->u.weakdef != NULL)
6742 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6743 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6744 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6745 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6746 if (ELIMINATE_COPY_RELOCS)
6747 h->non_got_ref = h->u.weakdef->non_got_ref;
6751 /* If we are creating a shared library, we must presume that the
6752 only references to the symbol are via the global offset table.
6753 For such cases we need not do anything here; the relocations will
6754 be handled correctly by relocate_section. */
6758 /* If there are no references to this symbol that do not use the
6759 GOT, we don't need to generate a copy reloc. */
6760 if (!h->non_got_ref)
6763 /* Don't generate a copy reloc for symbols defined in the executable. */
6764 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6767 if (ELIMINATE_COPY_RELOCS)
6769 struct ppc_link_hash_entry * eh;
6770 struct elf_dyn_relocs *p;
6772 eh = (struct ppc_link_hash_entry *) h;
6773 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6775 s = p->sec->output_section;
6776 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6780 /* If we didn't find any dynamic relocs in read-only sections, then
6781 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6789 if (h->plt.plist != NULL)
6791 /* We should never get here, but unfortunately there are versions
6792 of gcc out there that improperly (for this ABI) put initialized
6793 function pointers, vtable refs and suchlike in read-only
6794 sections. Allow them to proceed, but warn that this might
6795 break at runtime. */
6796 info->callbacks->einfo
6797 (_("%P: copy reloc against `%T' requires lazy plt linking; "
6798 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6799 h->root.root.string);
6802 /* This is a reference to a symbol defined by a dynamic object which
6803 is not a function. */
6805 /* We must allocate the symbol in our .dynbss section, which will
6806 become part of the .bss section of the executable. There will be
6807 an entry for this symbol in the .dynsym section. The dynamic
6808 object will contain position independent code, so all references
6809 from the dynamic object to this symbol will go through the global
6810 offset table. The dynamic linker will use the .dynsym entry to
6811 determine the address it must put in the global offset table, so
6812 both the dynamic object and the regular object will refer to the
6813 same memory location for the variable. */
6815 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6816 to copy the initial value out of the dynamic object and into the
6817 runtime process image. We need to remember the offset into the
6818 .rela.bss section we are going to use. */
6819 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6821 htab->relbss->size += sizeof (Elf64_External_Rela);
6827 return _bfd_elf_adjust_dynamic_copy (h, s);
6830 /* If given a function descriptor symbol, hide both the function code
6831 sym and the descriptor. */
6833 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6834 struct elf_link_hash_entry *h,
6835 bfd_boolean force_local)
6837 struct ppc_link_hash_entry *eh;
6838 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6840 eh = (struct ppc_link_hash_entry *) h;
6841 if (eh->is_func_descriptor)
6843 struct ppc_link_hash_entry *fh = eh->oh;
6848 struct ppc_link_hash_table *htab;
6851 /* We aren't supposed to use alloca in BFD because on
6852 systems which do not have alloca the version in libiberty
6853 calls xmalloc, which might cause the program to crash
6854 when it runs out of memory. This function doesn't have a
6855 return status, so there's no way to gracefully return an
6856 error. So cheat. We know that string[-1] can be safely
6857 accessed; It's either a string in an ELF string table,
6858 or allocated in an objalloc structure. */
6860 p = eh->elf.root.root.string - 1;
6863 htab = ppc_hash_table (info);
6867 fh = (struct ppc_link_hash_entry *)
6868 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6871 /* Unfortunately, if it so happens that the string we were
6872 looking for was allocated immediately before this string,
6873 then we overwrote the string terminator. That's the only
6874 reason the lookup should fail. */
6877 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6878 while (q >= eh->elf.root.root.string && *q == *p)
6880 if (q < eh->elf.root.root.string && *p == '.')
6881 fh = (struct ppc_link_hash_entry *)
6882 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6891 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6896 get_sym_h (struct elf_link_hash_entry **hp,
6897 Elf_Internal_Sym **symp,
6899 unsigned char **tls_maskp,
6900 Elf_Internal_Sym **locsymsp,
6901 unsigned long r_symndx,
6904 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6906 if (r_symndx >= symtab_hdr->sh_info)
6908 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6909 struct elf_link_hash_entry *h;
6911 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6912 h = elf_follow_link (h);
6920 if (symsecp != NULL)
6922 asection *symsec = NULL;
6923 if (h->root.type == bfd_link_hash_defined
6924 || h->root.type == bfd_link_hash_defweak)
6925 symsec = h->root.u.def.section;
6929 if (tls_maskp != NULL)
6931 struct ppc_link_hash_entry *eh;
6933 eh = (struct ppc_link_hash_entry *) h;
6934 *tls_maskp = &eh->tls_mask;
6939 Elf_Internal_Sym *sym;
6940 Elf_Internal_Sym *locsyms = *locsymsp;
6942 if (locsyms == NULL)
6944 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6945 if (locsyms == NULL)
6946 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6947 symtab_hdr->sh_info,
6948 0, NULL, NULL, NULL);
6949 if (locsyms == NULL)
6951 *locsymsp = locsyms;
6953 sym = locsyms + r_symndx;
6961 if (symsecp != NULL)
6962 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6964 if (tls_maskp != NULL)
6966 struct got_entry **lgot_ents;
6967 unsigned char *tls_mask;
6970 lgot_ents = elf_local_got_ents (ibfd);
6971 if (lgot_ents != NULL)
6973 struct plt_entry **local_plt = (struct plt_entry **)
6974 (lgot_ents + symtab_hdr->sh_info);
6975 unsigned char *lgot_masks = (unsigned char *)
6976 (local_plt + symtab_hdr->sh_info);
6977 tls_mask = &lgot_masks[r_symndx];
6979 *tls_maskp = tls_mask;
6985 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6986 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6987 type suitable for optimization, and 1 otherwise. */
6990 get_tls_mask (unsigned char **tls_maskp,
6991 unsigned long *toc_symndx,
6992 bfd_vma *toc_addend,
6993 Elf_Internal_Sym **locsymsp,
6994 const Elf_Internal_Rela *rel,
6997 unsigned long r_symndx;
6999 struct elf_link_hash_entry *h;
7000 Elf_Internal_Sym *sym;
7004 r_symndx = ELF64_R_SYM (rel->r_info);
7005 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7008 if ((*tls_maskp != NULL && **tls_maskp != 0)
7010 || ppc64_elf_section_data (sec) == NULL
7011 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7014 /* Look inside a TOC section too. */
7017 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7018 off = h->root.u.def.value;
7021 off = sym->st_value;
7022 off += rel->r_addend;
7023 BFD_ASSERT (off % 8 == 0);
7024 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7025 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7026 if (toc_symndx != NULL)
7027 *toc_symndx = r_symndx;
7028 if (toc_addend != NULL)
7029 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7030 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7032 if ((h == NULL || is_static_defined (h))
7033 && (next_r == -1 || next_r == -2))
7038 /* Find (or create) an entry in the tocsave hash table. */
7040 static struct tocsave_entry *
7041 tocsave_find (struct ppc_link_hash_table *htab,
7042 enum insert_option insert,
7043 Elf_Internal_Sym **local_syms,
7044 const Elf_Internal_Rela *irela,
7047 unsigned long r_indx;
7048 struct elf_link_hash_entry *h;
7049 Elf_Internal_Sym *sym;
7050 struct tocsave_entry ent, *p;
7052 struct tocsave_entry **slot;
7054 r_indx = ELF64_R_SYM (irela->r_info);
7055 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7057 if (ent.sec == NULL || ent.sec->output_section == NULL)
7059 (*_bfd_error_handler)
7060 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7065 ent.offset = h->root.u.def.value;
7067 ent.offset = sym->st_value;
7068 ent.offset += irela->r_addend;
7070 hash = tocsave_htab_hash (&ent);
7071 slot = ((struct tocsave_entry **)
7072 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7078 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7087 /* Adjust all global syms defined in opd sections. In gcc generated
7088 code for the old ABI, these will already have been done. */
7091 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7093 struct ppc_link_hash_entry *eh;
7095 struct _opd_sec_data *opd;
7097 if (h->root.type == bfd_link_hash_indirect)
7100 if (h->root.type != bfd_link_hash_defined
7101 && h->root.type != bfd_link_hash_defweak)
7104 eh = (struct ppc_link_hash_entry *) h;
7105 if (eh->adjust_done)
7108 sym_sec = eh->elf.root.u.def.section;
7109 opd = get_opd_info (sym_sec);
7110 if (opd != NULL && opd->adjust != NULL)
7112 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7115 /* This entry has been deleted. */
7116 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7119 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7120 if (discarded_section (dsec))
7122 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7126 eh->elf.root.u.def.value = 0;
7127 eh->elf.root.u.def.section = dsec;
7130 eh->elf.root.u.def.value += adjust;
7131 eh->adjust_done = 1;
7136 /* Handles decrementing dynamic reloc counts for the reloc specified by
7137 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7138 have already been determined. */
7141 dec_dynrel_count (bfd_vma r_info,
7143 struct bfd_link_info *info,
7144 Elf_Internal_Sym **local_syms,
7145 struct elf_link_hash_entry *h,
7146 Elf_Internal_Sym *sym)
7148 enum elf_ppc64_reloc_type r_type;
7149 asection *sym_sec = NULL;
7151 /* Can this reloc be dynamic? This switch, and later tests here
7152 should be kept in sync with the code in check_relocs. */
7153 r_type = ELF64_R_TYPE (r_info);
7159 case R_PPC64_TPREL16:
7160 case R_PPC64_TPREL16_LO:
7161 case R_PPC64_TPREL16_HI:
7162 case R_PPC64_TPREL16_HA:
7163 case R_PPC64_TPREL16_DS:
7164 case R_PPC64_TPREL16_LO_DS:
7165 case R_PPC64_TPREL16_HIGH:
7166 case R_PPC64_TPREL16_HIGHA:
7167 case R_PPC64_TPREL16_HIGHER:
7168 case R_PPC64_TPREL16_HIGHERA:
7169 case R_PPC64_TPREL16_HIGHEST:
7170 case R_PPC64_TPREL16_HIGHESTA:
7174 case R_PPC64_TPREL64:
7175 case R_PPC64_DTPMOD64:
7176 case R_PPC64_DTPREL64:
7177 case R_PPC64_ADDR64:
7181 case R_PPC64_ADDR14:
7182 case R_PPC64_ADDR14_BRNTAKEN:
7183 case R_PPC64_ADDR14_BRTAKEN:
7184 case R_PPC64_ADDR16:
7185 case R_PPC64_ADDR16_DS:
7186 case R_PPC64_ADDR16_HA:
7187 case R_PPC64_ADDR16_HI:
7188 case R_PPC64_ADDR16_HIGH:
7189 case R_PPC64_ADDR16_HIGHA:
7190 case R_PPC64_ADDR16_HIGHER:
7191 case R_PPC64_ADDR16_HIGHERA:
7192 case R_PPC64_ADDR16_HIGHEST:
7193 case R_PPC64_ADDR16_HIGHESTA:
7194 case R_PPC64_ADDR16_LO:
7195 case R_PPC64_ADDR16_LO_DS:
7196 case R_PPC64_ADDR24:
7197 case R_PPC64_ADDR32:
7198 case R_PPC64_UADDR16:
7199 case R_PPC64_UADDR32:
7200 case R_PPC64_UADDR64:
7205 if (local_syms != NULL)
7207 unsigned long r_symndx;
7208 bfd *ibfd = sec->owner;
7210 r_symndx = ELF64_R_SYM (r_info);
7211 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7216 && (must_be_dyn_reloc (info, r_type)
7218 && (!SYMBOLIC_BIND (info, h)
7219 || h->root.type == bfd_link_hash_defweak
7220 || !h->def_regular))))
7221 || (ELIMINATE_COPY_RELOCS
7224 && (h->root.type == bfd_link_hash_defweak
7225 || !h->def_regular)))
7232 struct elf_dyn_relocs *p;
7233 struct elf_dyn_relocs **pp;
7234 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7236 /* elf_gc_sweep may have already removed all dyn relocs associated
7237 with local syms for a given section. Also, symbol flags are
7238 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7239 report a dynreloc miscount. */
7240 if (*pp == NULL && info->gc_sections)
7243 while ((p = *pp) != NULL)
7247 if (!must_be_dyn_reloc (info, r_type))
7259 struct ppc_dyn_relocs *p;
7260 struct ppc_dyn_relocs **pp;
7262 bfd_boolean is_ifunc;
7264 if (local_syms == NULL)
7265 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7266 if (sym_sec == NULL)
7269 vpp = &elf_section_data (sym_sec)->local_dynrel;
7270 pp = (struct ppc_dyn_relocs **) vpp;
7272 if (*pp == NULL && info->gc_sections)
7275 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7276 while ((p = *pp) != NULL)
7278 if (p->sec == sec && p->ifunc == is_ifunc)
7289 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7291 bfd_set_error (bfd_error_bad_value);
7295 /* Remove unused Official Procedure Descriptor entries. Currently we
7296 only remove those associated with functions in discarded link-once
7297 sections, or weakly defined functions that have been overridden. It
7298 would be possible to remove many more entries for statically linked
7302 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7305 bfd_boolean some_edited = FALSE;
7306 asection *need_pad = NULL;
7308 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7311 Elf_Internal_Rela *relstart, *rel, *relend;
7312 Elf_Internal_Shdr *symtab_hdr;
7313 Elf_Internal_Sym *local_syms;
7315 struct _opd_sec_data *opd;
7316 bfd_boolean need_edit, add_aux_fields;
7317 bfd_size_type cnt_16b = 0;
7319 if (!is_ppc64_elf (ibfd))
7322 sec = bfd_get_section_by_name (ibfd, ".opd");
7323 if (sec == NULL || sec->size == 0)
7326 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7329 if (sec->output_section == bfd_abs_section_ptr)
7332 /* Look through the section relocs. */
7333 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7337 symtab_hdr = &elf_symtab_hdr (ibfd);
7339 /* Read the relocations. */
7340 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7342 if (relstart == NULL)
7345 /* First run through the relocs to check they are sane, and to
7346 determine whether we need to edit this opd section. */
7350 relend = relstart + sec->reloc_count;
7351 for (rel = relstart; rel < relend; )
7353 enum elf_ppc64_reloc_type r_type;
7354 unsigned long r_symndx;
7356 struct elf_link_hash_entry *h;
7357 Elf_Internal_Sym *sym;
7359 /* .opd contains a regular array of 16 or 24 byte entries. We're
7360 only interested in the reloc pointing to a function entry
7362 if (rel->r_offset != offset
7363 || rel + 1 >= relend
7364 || (rel + 1)->r_offset != offset + 8)
7366 /* If someone messes with .opd alignment then after a
7367 "ld -r" we might have padding in the middle of .opd.
7368 Also, there's nothing to prevent someone putting
7369 something silly in .opd with the assembler. No .opd
7370 optimization for them! */
7372 (*_bfd_error_handler)
7373 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7378 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7379 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7381 (*_bfd_error_handler)
7382 (_("%B: unexpected reloc type %u in .opd section"),
7388 r_symndx = ELF64_R_SYM (rel->r_info);
7389 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7393 if (sym_sec == NULL || sym_sec->owner == NULL)
7395 const char *sym_name;
7397 sym_name = h->root.root.string;
7399 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7402 (*_bfd_error_handler)
7403 (_("%B: undefined sym `%s' in .opd section"),
7409 /* opd entries are always for functions defined in the
7410 current input bfd. If the symbol isn't defined in the
7411 input bfd, then we won't be using the function in this
7412 bfd; It must be defined in a linkonce section in another
7413 bfd, or is weak. It's also possible that we are
7414 discarding the function due to a linker script /DISCARD/,
7415 which we test for via the output_section. */
7416 if (sym_sec->owner != ibfd
7417 || sym_sec->output_section == bfd_abs_section_ptr)
7422 || (rel + 1 == relend && rel->r_offset == offset + 16))
7424 if (sec->size == offset + 24)
7429 if (rel == relend && sec->size == offset + 16)
7437 if (rel->r_offset == offset + 24)
7439 else if (rel->r_offset != offset + 16)
7441 else if (rel + 1 < relend
7442 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7443 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7448 else if (rel + 2 < relend
7449 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7450 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7459 add_aux_fields = non_overlapping && cnt_16b > 0;
7461 if (need_edit || add_aux_fields)
7463 Elf_Internal_Rela *write_rel;
7464 Elf_Internal_Shdr *rel_hdr;
7465 bfd_byte *rptr, *wptr;
7466 bfd_byte *new_contents;
7471 new_contents = NULL;
7472 amt = sec->size * sizeof (long) / 8;
7473 opd = &ppc64_elf_section_data (sec)->u.opd;
7474 opd->adjust = bfd_zalloc (sec->owner, amt);
7475 if (opd->adjust == NULL)
7477 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7479 /* This seems a waste of time as input .opd sections are all
7480 zeros as generated by gcc, but I suppose there's no reason
7481 this will always be so. We might start putting something in
7482 the third word of .opd entries. */
7483 if ((sec->flags & SEC_IN_MEMORY) == 0)
7486 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7491 if (local_syms != NULL
7492 && symtab_hdr->contents != (unsigned char *) local_syms)
7494 if (elf_section_data (sec)->relocs != relstart)
7498 sec->contents = loc;
7499 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7502 elf_section_data (sec)->relocs = relstart;
7504 new_contents = sec->contents;
7507 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7508 if (new_contents == NULL)
7512 wptr = new_contents;
7513 rptr = sec->contents;
7515 write_rel = relstart;
7519 for (rel = relstart; rel < relend; rel++)
7521 unsigned long r_symndx;
7523 struct elf_link_hash_entry *h;
7524 Elf_Internal_Sym *sym;
7526 r_symndx = ELF64_R_SYM (rel->r_info);
7527 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7531 if (rel->r_offset == offset)
7533 struct ppc_link_hash_entry *fdh = NULL;
7535 /* See if the .opd entry is full 24 byte or
7536 16 byte (with fd_aux entry overlapped with next
7539 if ((rel + 2 == relend && sec->size == offset + 16)
7540 || (rel + 3 < relend
7541 && rel[2].r_offset == offset + 16
7542 && rel[3].r_offset == offset + 24
7543 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7544 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7548 && h->root.root.string[0] == '.')
7550 struct ppc_link_hash_table *htab;
7552 htab = ppc_hash_table (info);
7554 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7557 && fdh->elf.root.type != bfd_link_hash_defined
7558 && fdh->elf.root.type != bfd_link_hash_defweak)
7562 skip = (sym_sec->owner != ibfd
7563 || sym_sec->output_section == bfd_abs_section_ptr);
7566 if (fdh != NULL && sym_sec->owner == ibfd)
7568 /* Arrange for the function descriptor sym
7570 fdh->elf.root.u.def.value = 0;
7571 fdh->elf.root.u.def.section = sym_sec;
7573 opd->adjust[rel->r_offset / 8] = -1;
7577 /* We'll be keeping this opd entry. */
7581 /* Redefine the function descriptor symbol to
7582 this location in the opd section. It is
7583 necessary to update the value here rather
7584 than using an array of adjustments as we do
7585 for local symbols, because various places
7586 in the generic ELF code use the value
7587 stored in u.def.value. */
7588 fdh->elf.root.u.def.value = wptr - new_contents;
7589 fdh->adjust_done = 1;
7592 /* Local syms are a bit tricky. We could
7593 tweak them as they can be cached, but
7594 we'd need to look through the local syms
7595 for the function descriptor sym which we
7596 don't have at the moment. So keep an
7597 array of adjustments. */
7598 opd->adjust[rel->r_offset / 8]
7599 = (wptr - new_contents) - (rptr - sec->contents);
7602 memcpy (wptr, rptr, opd_ent_size);
7603 wptr += opd_ent_size;
7604 if (add_aux_fields && opd_ent_size == 16)
7606 memset (wptr, '\0', 8);
7610 rptr += opd_ent_size;
7611 offset += opd_ent_size;
7617 && !info->relocatable
7618 && !dec_dynrel_count (rel->r_info, sec, info,
7624 /* We need to adjust any reloc offsets to point to the
7625 new opd entries. While we're at it, we may as well
7626 remove redundant relocs. */
7627 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7628 if (write_rel != rel)
7629 memcpy (write_rel, rel, sizeof (*rel));
7634 sec->size = wptr - new_contents;
7635 sec->reloc_count = write_rel - relstart;
7638 free (sec->contents);
7639 sec->contents = new_contents;
7642 /* Fudge the header size too, as this is used later in
7643 elf_bfd_final_link if we are emitting relocs. */
7644 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7645 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7648 else if (elf_section_data (sec)->relocs != relstart)
7651 if (local_syms != NULL
7652 && symtab_hdr->contents != (unsigned char *) local_syms)
7654 if (!info->keep_memory)
7657 symtab_hdr->contents = (unsigned char *) local_syms;
7662 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7664 /* If we are doing a final link and the last .opd entry is just 16 byte
7665 long, add a 8 byte padding after it. */
7666 if (need_pad != NULL && !info->relocatable)
7670 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7672 BFD_ASSERT (need_pad->size > 0);
7674 p = bfd_malloc (need_pad->size + 8);
7678 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7679 p, 0, need_pad->size))
7682 need_pad->contents = p;
7683 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7687 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7691 need_pad->contents = p;
7694 memset (need_pad->contents + need_pad->size, 0, 8);
7695 need_pad->size += 8;
7701 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7704 ppc64_elf_tls_setup (struct bfd_link_info *info,
7705 int no_tls_get_addr_opt,
7708 struct ppc_link_hash_table *htab;
7710 htab = ppc_hash_table (info);
7715 htab->do_multi_toc = 0;
7716 else if (!htab->do_multi_toc)
7719 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7720 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7721 FALSE, FALSE, TRUE));
7722 /* Move dynamic linking info to the function descriptor sym. */
7723 if (htab->tls_get_addr != NULL)
7724 func_desc_adjust (&htab->tls_get_addr->elf, info);
7725 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7726 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7727 FALSE, FALSE, TRUE));
7728 if (!no_tls_get_addr_opt)
7730 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7732 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7733 FALSE, FALSE, TRUE);
7735 func_desc_adjust (opt, info);
7736 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7737 FALSE, FALSE, TRUE);
7739 && (opt_fd->root.type == bfd_link_hash_defined
7740 || opt_fd->root.type == bfd_link_hash_defweak))
7742 /* If glibc supports an optimized __tls_get_addr call stub,
7743 signalled by the presence of __tls_get_addr_opt, and we'll
7744 be calling __tls_get_addr via a plt call stub, then
7745 make __tls_get_addr point to __tls_get_addr_opt. */
7746 tga_fd = &htab->tls_get_addr_fd->elf;
7747 if (htab->elf.dynamic_sections_created
7749 && (tga_fd->type == STT_FUNC
7750 || tga_fd->needs_plt)
7751 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7752 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7753 && tga_fd->root.type == bfd_link_hash_undefweak)))
7755 struct plt_entry *ent;
7757 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7758 if (ent->plt.refcount > 0)
7762 tga_fd->root.type = bfd_link_hash_indirect;
7763 tga_fd->root.u.i.link = &opt_fd->root;
7764 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7765 if (opt_fd->dynindx != -1)
7767 /* Use __tls_get_addr_opt in dynamic relocations. */
7768 opt_fd->dynindx = -1;
7769 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7770 opt_fd->dynstr_index);
7771 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7774 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7775 tga = &htab->tls_get_addr->elf;
7776 if (opt != NULL && tga != NULL)
7778 tga->root.type = bfd_link_hash_indirect;
7779 tga->root.u.i.link = &opt->root;
7780 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7781 _bfd_elf_link_hash_hide_symbol (info, opt,
7783 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7785 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7786 htab->tls_get_addr_fd->is_func_descriptor = 1;
7787 if (htab->tls_get_addr != NULL)
7789 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7790 htab->tls_get_addr->is_func = 1;
7796 no_tls_get_addr_opt = TRUE;
7798 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7799 return _bfd_elf_tls_setup (info->output_bfd, info);
7802 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7806 branch_reloc_hash_match (const bfd *ibfd,
7807 const Elf_Internal_Rela *rel,
7808 const struct ppc_link_hash_entry *hash1,
7809 const struct ppc_link_hash_entry *hash2)
7811 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7812 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7813 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7815 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7817 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7818 struct elf_link_hash_entry *h;
7820 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7821 h = elf_follow_link (h);
7822 if (h == &hash1->elf || h == &hash2->elf)
7828 /* Run through all the TLS relocs looking for optimization
7829 opportunities. The linker has been hacked (see ppc64elf.em) to do
7830 a preliminary section layout so that we know the TLS segment
7831 offsets. We can't optimize earlier because some optimizations need
7832 to know the tp offset, and we need to optimize before allocating
7833 dynamic relocations. */
7836 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7840 struct ppc_link_hash_table *htab;
7841 unsigned char *toc_ref;
7844 if (info->relocatable || !info->executable)
7847 htab = ppc_hash_table (info);
7851 /* Make two passes over the relocs. On the first pass, mark toc
7852 entries involved with tls relocs, and check that tls relocs
7853 involved in setting up a tls_get_addr call are indeed followed by
7854 such a call. If they are not, we can't do any tls optimization.
7855 On the second pass twiddle tls_mask flags to notify
7856 relocate_section that optimization can be done, and adjust got
7857 and plt refcounts. */
7859 for (pass = 0; pass < 2; ++pass)
7860 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7862 Elf_Internal_Sym *locsyms = NULL;
7863 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7865 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7866 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7868 Elf_Internal_Rela *relstart, *rel, *relend;
7869 bfd_boolean found_tls_get_addr_arg = 0;
7871 /* Read the relocations. */
7872 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7874 if (relstart == NULL)
7877 relend = relstart + sec->reloc_count;
7878 for (rel = relstart; rel < relend; rel++)
7880 enum elf_ppc64_reloc_type r_type;
7881 unsigned long r_symndx;
7882 struct elf_link_hash_entry *h;
7883 Elf_Internal_Sym *sym;
7885 unsigned char *tls_mask;
7886 unsigned char tls_set, tls_clear, tls_type = 0;
7888 bfd_boolean ok_tprel, is_local;
7889 long toc_ref_index = 0;
7890 int expecting_tls_get_addr = 0;
7891 bfd_boolean ret = FALSE;
7893 r_symndx = ELF64_R_SYM (rel->r_info);
7894 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7898 if (elf_section_data (sec)->relocs != relstart)
7900 if (toc_ref != NULL)
7903 && (elf_symtab_hdr (ibfd).contents
7904 != (unsigned char *) locsyms))
7911 if (h->root.type == bfd_link_hash_defined
7912 || h->root.type == bfd_link_hash_defweak)
7913 value = h->root.u.def.value;
7914 else if (h->root.type == bfd_link_hash_undefweak)
7918 found_tls_get_addr_arg = 0;
7923 /* Symbols referenced by TLS relocs must be of type
7924 STT_TLS. So no need for .opd local sym adjust. */
7925 value = sym->st_value;
7934 && h->root.type == bfd_link_hash_undefweak)
7938 value += sym_sec->output_offset;
7939 value += sym_sec->output_section->vma;
7940 value -= htab->elf.tls_sec->vma;
7941 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7942 < (bfd_vma) 1 << 32);
7946 r_type = ELF64_R_TYPE (rel->r_info);
7947 /* If this section has old-style __tls_get_addr calls
7948 without marker relocs, then check that each
7949 __tls_get_addr call reloc is preceded by a reloc
7950 that conceivably belongs to the __tls_get_addr arg
7951 setup insn. If we don't find matching arg setup
7952 relocs, don't do any tls optimization. */
7954 && sec->has_tls_get_addr_call
7956 && (h == &htab->tls_get_addr->elf
7957 || h == &htab->tls_get_addr_fd->elf)
7958 && !found_tls_get_addr_arg
7959 && is_branch_reloc (r_type))
7961 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
7962 "TLS optimization disabled\n"),
7963 ibfd, sec, rel->r_offset);
7968 found_tls_get_addr_arg = 0;
7971 case R_PPC64_GOT_TLSLD16:
7972 case R_PPC64_GOT_TLSLD16_LO:
7973 expecting_tls_get_addr = 1;
7974 found_tls_get_addr_arg = 1;
7977 case R_PPC64_GOT_TLSLD16_HI:
7978 case R_PPC64_GOT_TLSLD16_HA:
7979 /* These relocs should never be against a symbol
7980 defined in a shared lib. Leave them alone if
7981 that turns out to be the case. */
7988 tls_type = TLS_TLS | TLS_LD;
7991 case R_PPC64_GOT_TLSGD16:
7992 case R_PPC64_GOT_TLSGD16_LO:
7993 expecting_tls_get_addr = 1;
7994 found_tls_get_addr_arg = 1;
7997 case R_PPC64_GOT_TLSGD16_HI:
7998 case R_PPC64_GOT_TLSGD16_HA:
8004 tls_set = TLS_TLS | TLS_TPRELGD;
8006 tls_type = TLS_TLS | TLS_GD;
8009 case R_PPC64_GOT_TPREL16_DS:
8010 case R_PPC64_GOT_TPREL16_LO_DS:
8011 case R_PPC64_GOT_TPREL16_HI:
8012 case R_PPC64_GOT_TPREL16_HA:
8017 tls_clear = TLS_TPREL;
8018 tls_type = TLS_TLS | TLS_TPREL;
8025 found_tls_get_addr_arg = 1;
8030 case R_PPC64_TOC16_LO:
8031 if (sym_sec == NULL || sym_sec != toc)
8034 /* Mark this toc entry as referenced by a TLS
8035 code sequence. We can do that now in the
8036 case of R_PPC64_TLS, and after checking for
8037 tls_get_addr for the TOC16 relocs. */
8038 if (toc_ref == NULL)
8039 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8040 if (toc_ref == NULL)
8044 value = h->root.u.def.value;
8046 value = sym->st_value;
8047 value += rel->r_addend;
8048 BFD_ASSERT (value < toc->size && value % 8 == 0);
8049 toc_ref_index = (value + toc->output_offset) / 8;
8050 if (r_type == R_PPC64_TLS
8051 || r_type == R_PPC64_TLSGD
8052 || r_type == R_PPC64_TLSLD)
8054 toc_ref[toc_ref_index] = 1;
8058 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8063 expecting_tls_get_addr = 2;
8066 case R_PPC64_TPREL64:
8070 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8075 tls_set = TLS_EXPLICIT;
8076 tls_clear = TLS_TPREL;
8081 case R_PPC64_DTPMOD64:
8085 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8087 if (rel + 1 < relend
8089 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8090 && rel[1].r_offset == rel->r_offset + 8)
8094 tls_set = TLS_EXPLICIT | TLS_GD;
8097 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8106 tls_set = TLS_EXPLICIT;
8117 if (!expecting_tls_get_addr
8118 || !sec->has_tls_get_addr_call)
8121 if (rel + 1 < relend
8122 && branch_reloc_hash_match (ibfd, rel + 1,
8124 htab->tls_get_addr_fd))
8126 if (expecting_tls_get_addr == 2)
8128 /* Check for toc tls entries. */
8129 unsigned char *toc_tls;
8132 retval = get_tls_mask (&toc_tls, NULL, NULL,
8137 if (toc_tls != NULL)
8139 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8140 found_tls_get_addr_arg = 1;
8142 toc_ref[toc_ref_index] = 1;
8148 if (expecting_tls_get_addr != 1)
8151 /* Uh oh, we didn't find the expected call. We
8152 could just mark this symbol to exclude it
8153 from tls optimization but it's safer to skip
8154 the entire optimization. */
8155 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8156 "TLS optimization disabled\n"),
8157 ibfd, sec, rel->r_offset);
8162 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8164 struct plt_entry *ent;
8165 for (ent = htab->tls_get_addr->elf.plt.plist;
8168 if (ent->addend == 0)
8170 if (ent->plt.refcount > 0)
8172 ent->plt.refcount -= 1;
8173 expecting_tls_get_addr = 0;
8179 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8181 struct plt_entry *ent;
8182 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8185 if (ent->addend == 0)
8187 if (ent->plt.refcount > 0)
8188 ent->plt.refcount -= 1;
8196 if ((tls_set & TLS_EXPLICIT) == 0)
8198 struct got_entry *ent;
8200 /* Adjust got entry for this reloc. */
8204 ent = elf_local_got_ents (ibfd)[r_symndx];
8206 for (; ent != NULL; ent = ent->next)
8207 if (ent->addend == rel->r_addend
8208 && ent->owner == ibfd
8209 && ent->tls_type == tls_type)
8216 /* We managed to get rid of a got entry. */
8217 if (ent->got.refcount > 0)
8218 ent->got.refcount -= 1;
8223 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8224 we'll lose one or two dyn relocs. */
8225 if (!dec_dynrel_count (rel->r_info, sec, info,
8229 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8231 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8237 *tls_mask |= tls_set;
8238 *tls_mask &= ~tls_clear;
8241 if (elf_section_data (sec)->relocs != relstart)
8246 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8248 if (!info->keep_memory)
8251 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8255 if (toc_ref != NULL)
8260 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8261 the values of any global symbols in a toc section that has been
8262 edited. Globals in toc sections should be a rarity, so this function
8263 sets a flag if any are found in toc sections other than the one just
8264 edited, so that futher hash table traversals can be avoided. */
8266 struct adjust_toc_info
8269 unsigned long *skip;
8270 bfd_boolean global_toc_syms;
8273 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8276 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8278 struct ppc_link_hash_entry *eh;
8279 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8282 if (h->root.type != bfd_link_hash_defined
8283 && h->root.type != bfd_link_hash_defweak)
8286 eh = (struct ppc_link_hash_entry *) h;
8287 if (eh->adjust_done)
8290 if (eh->elf.root.u.def.section == toc_inf->toc)
8292 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8293 i = toc_inf->toc->rawsize >> 3;
8295 i = eh->elf.root.u.def.value >> 3;
8297 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8299 (*_bfd_error_handler)
8300 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8303 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8304 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8307 eh->elf.root.u.def.value -= toc_inf->skip[i];
8308 eh->adjust_done = 1;
8310 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8311 toc_inf->global_toc_syms = TRUE;
8316 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8319 ok_lo_toc_insn (unsigned int insn)
8321 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8322 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8323 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8324 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8325 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8326 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8327 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8328 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8329 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8330 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8331 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8332 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8333 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8334 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8335 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8337 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8338 && ((insn & 3) == 0 || (insn & 3) == 3))
8339 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8342 /* Examine all relocs referencing .toc sections in order to remove
8343 unused .toc entries. */
8346 ppc64_elf_edit_toc (struct bfd_link_info *info)
8349 struct adjust_toc_info toc_inf;
8350 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8352 htab->do_toc_opt = 1;
8353 toc_inf.global_toc_syms = TRUE;
8354 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8356 asection *toc, *sec;
8357 Elf_Internal_Shdr *symtab_hdr;
8358 Elf_Internal_Sym *local_syms;
8359 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8360 unsigned long *skip, *drop;
8361 unsigned char *used;
8362 unsigned char *keep, last, some_unused;
8364 if (!is_ppc64_elf (ibfd))
8367 toc = bfd_get_section_by_name (ibfd, ".toc");
8370 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8371 || discarded_section (toc))
8376 symtab_hdr = &elf_symtab_hdr (ibfd);
8378 /* Look at sections dropped from the final link. */
8381 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8383 if (sec->reloc_count == 0
8384 || !discarded_section (sec)
8385 || get_opd_info (sec)
8386 || (sec->flags & SEC_ALLOC) == 0
8387 || (sec->flags & SEC_DEBUGGING) != 0)
8390 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8391 if (relstart == NULL)
8394 /* Run through the relocs to see which toc entries might be
8396 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8398 enum elf_ppc64_reloc_type r_type;
8399 unsigned long r_symndx;
8401 struct elf_link_hash_entry *h;
8402 Elf_Internal_Sym *sym;
8405 r_type = ELF64_R_TYPE (rel->r_info);
8412 case R_PPC64_TOC16_LO:
8413 case R_PPC64_TOC16_HI:
8414 case R_PPC64_TOC16_HA:
8415 case R_PPC64_TOC16_DS:
8416 case R_PPC64_TOC16_LO_DS:
8420 r_symndx = ELF64_R_SYM (rel->r_info);
8421 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8429 val = h->root.u.def.value;
8431 val = sym->st_value;
8432 val += rel->r_addend;
8434 if (val >= toc->size)
8437 /* Anything in the toc ought to be aligned to 8 bytes.
8438 If not, don't mark as unused. */
8444 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8449 skip[val >> 3] = ref_from_discarded;
8452 if (elf_section_data (sec)->relocs != relstart)
8456 /* For largetoc loads of address constants, we can convert
8457 . addis rx,2,addr@got@ha
8458 . ld ry,addr@got@l(rx)
8460 . addis rx,2,addr@toc@ha
8461 . addi ry,rx,addr@toc@l
8462 when addr is within 2G of the toc pointer. This then means
8463 that the word storing "addr" in the toc is no longer needed. */
8465 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8466 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8467 && toc->reloc_count != 0)
8469 /* Read toc relocs. */
8470 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8472 if (toc_relocs == NULL)
8475 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8477 enum elf_ppc64_reloc_type r_type;
8478 unsigned long r_symndx;
8480 struct elf_link_hash_entry *h;
8481 Elf_Internal_Sym *sym;
8484 r_type = ELF64_R_TYPE (rel->r_info);
8485 if (r_type != R_PPC64_ADDR64)
8488 r_symndx = ELF64_R_SYM (rel->r_info);
8489 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8494 || discarded_section (sym_sec))
8497 if (!SYMBOL_CALLS_LOCAL (info, h))
8502 if (h->type == STT_GNU_IFUNC)
8504 val = h->root.u.def.value;
8508 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8510 val = sym->st_value;
8512 val += rel->r_addend;
8513 val += sym_sec->output_section->vma + sym_sec->output_offset;
8515 /* We don't yet know the exact toc pointer value, but we
8516 know it will be somewhere in the toc section. Don't
8517 optimize if the difference from any possible toc
8518 pointer is outside [ff..f80008000, 7fff7fff]. */
8519 addr = toc->output_section->vma + TOC_BASE_OFF;
8520 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8523 addr = toc->output_section->vma + toc->output_section->rawsize;
8524 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8529 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8534 skip[rel->r_offset >> 3]
8535 |= can_optimize | ((rel - toc_relocs) << 2);
8542 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8546 if (local_syms != NULL
8547 && symtab_hdr->contents != (unsigned char *) local_syms)
8551 && elf_section_data (sec)->relocs != relstart)
8553 if (toc_relocs != NULL
8554 && elf_section_data (toc)->relocs != toc_relocs)
8561 /* Now check all kept sections that might reference the toc.
8562 Check the toc itself last. */
8563 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8566 sec = (sec == toc ? NULL
8567 : sec->next == NULL ? toc
8568 : sec->next == toc && toc->next ? toc->next
8573 if (sec->reloc_count == 0
8574 || discarded_section (sec)
8575 || get_opd_info (sec)
8576 || (sec->flags & SEC_ALLOC) == 0
8577 || (sec->flags & SEC_DEBUGGING) != 0)
8580 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8582 if (relstart == NULL)
8585 /* Mark toc entries referenced as used. */
8589 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8591 enum elf_ppc64_reloc_type r_type;
8592 unsigned long r_symndx;
8594 struct elf_link_hash_entry *h;
8595 Elf_Internal_Sym *sym;
8597 enum {no_check, check_lo, check_ha} insn_check;
8599 r_type = ELF64_R_TYPE (rel->r_info);
8603 insn_check = no_check;
8606 case R_PPC64_GOT_TLSLD16_HA:
8607 case R_PPC64_GOT_TLSGD16_HA:
8608 case R_PPC64_GOT_TPREL16_HA:
8609 case R_PPC64_GOT_DTPREL16_HA:
8610 case R_PPC64_GOT16_HA:
8611 case R_PPC64_TOC16_HA:
8612 insn_check = check_ha;
8615 case R_PPC64_GOT_TLSLD16_LO:
8616 case R_PPC64_GOT_TLSGD16_LO:
8617 case R_PPC64_GOT_TPREL16_LO_DS:
8618 case R_PPC64_GOT_DTPREL16_LO_DS:
8619 case R_PPC64_GOT16_LO:
8620 case R_PPC64_GOT16_LO_DS:
8621 case R_PPC64_TOC16_LO:
8622 case R_PPC64_TOC16_LO_DS:
8623 insn_check = check_lo;
8627 if (insn_check != no_check)
8629 bfd_vma off = rel->r_offset & ~3;
8630 unsigned char buf[4];
8633 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8638 insn = bfd_get_32 (ibfd, buf);
8639 if (insn_check == check_lo
8640 ? !ok_lo_toc_insn (insn)
8641 : ((insn & ((0x3f << 26) | 0x1f << 16))
8642 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8646 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8647 sprintf (str, "%#08x", insn);
8648 info->callbacks->einfo
8649 (_("%P: %H: toc optimization is not supported for"
8650 " %s instruction.\n"),
8651 ibfd, sec, rel->r_offset & ~3, str);
8658 case R_PPC64_TOC16_LO:
8659 case R_PPC64_TOC16_HI:
8660 case R_PPC64_TOC16_HA:
8661 case R_PPC64_TOC16_DS:
8662 case R_PPC64_TOC16_LO_DS:
8663 /* In case we're taking addresses of toc entries. */
8664 case R_PPC64_ADDR64:
8671 r_symndx = ELF64_R_SYM (rel->r_info);
8672 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8683 val = h->root.u.def.value;
8685 val = sym->st_value;
8686 val += rel->r_addend;
8688 if (val >= toc->size)
8691 if ((skip[val >> 3] & can_optimize) != 0)
8698 case R_PPC64_TOC16_HA:
8701 case R_PPC64_TOC16_LO_DS:
8702 off = rel->r_offset;
8703 off += (bfd_big_endian (ibfd) ? -2 : 3);
8704 if (!bfd_get_section_contents (ibfd, sec, &opc,
8710 if ((opc & (0x3f << 2)) == (58u << 2))
8715 /* Wrong sort of reloc, or not a ld. We may
8716 as well clear ref_from_discarded too. */
8723 /* For the toc section, we only mark as used if this
8724 entry itself isn't unused. */
8725 else if ((used[rel->r_offset >> 3]
8726 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
8729 /* Do all the relocs again, to catch reference
8738 if (elf_section_data (sec)->relocs != relstart)
8742 /* Merge the used and skip arrays. Assume that TOC
8743 doublewords not appearing as either used or unused belong
8744 to to an entry more than one doubleword in size. */
8745 for (drop = skip, keep = used, last = 0, some_unused = 0;
8746 drop < skip + (toc->size + 7) / 8;
8751 *drop &= ~ref_from_discarded;
8752 if ((*drop & can_optimize) != 0)
8756 else if ((*drop & ref_from_discarded) != 0)
8759 last = ref_from_discarded;
8769 bfd_byte *contents, *src;
8771 Elf_Internal_Sym *sym;
8772 bfd_boolean local_toc_syms = FALSE;
8774 /* Shuffle the toc contents, and at the same time convert the
8775 skip array from booleans into offsets. */
8776 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8779 elf_section_data (toc)->this_hdr.contents = contents;
8781 for (src = contents, off = 0, drop = skip;
8782 src < contents + toc->size;
8785 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8790 memcpy (src - off, src, 8);
8794 toc->rawsize = toc->size;
8795 toc->size = src - contents - off;
8797 /* Adjust addends for relocs against the toc section sym,
8798 and optimize any accesses we can. */
8799 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8801 if (sec->reloc_count == 0
8802 || discarded_section (sec))
8805 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8807 if (relstart == NULL)
8810 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8812 enum elf_ppc64_reloc_type r_type;
8813 unsigned long r_symndx;
8815 struct elf_link_hash_entry *h;
8818 r_type = ELF64_R_TYPE (rel->r_info);
8825 case R_PPC64_TOC16_LO:
8826 case R_PPC64_TOC16_HI:
8827 case R_PPC64_TOC16_HA:
8828 case R_PPC64_TOC16_DS:
8829 case R_PPC64_TOC16_LO_DS:
8830 case R_PPC64_ADDR64:
8834 r_symndx = ELF64_R_SYM (rel->r_info);
8835 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8843 val = h->root.u.def.value;
8846 val = sym->st_value;
8848 local_toc_syms = TRUE;
8851 val += rel->r_addend;
8853 if (val > toc->rawsize)
8855 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8857 else if ((skip[val >> 3] & can_optimize) != 0)
8859 Elf_Internal_Rela *tocrel
8860 = toc_relocs + (skip[val >> 3] >> 2);
8861 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8865 case R_PPC64_TOC16_HA:
8866 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8869 case R_PPC64_TOC16_LO_DS:
8870 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8874 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8876 info->callbacks->einfo
8877 (_("%P: %H: %s references "
8878 "optimized away TOC entry\n"),
8879 ibfd, sec, rel->r_offset,
8880 ppc64_elf_howto_table[r_type]->name);
8881 bfd_set_error (bfd_error_bad_value);
8884 rel->r_addend = tocrel->r_addend;
8885 elf_section_data (sec)->relocs = relstart;
8889 if (h != NULL || sym->st_value != 0)
8892 rel->r_addend -= skip[val >> 3];
8893 elf_section_data (sec)->relocs = relstart;
8896 if (elf_section_data (sec)->relocs != relstart)
8900 /* We shouldn't have local or global symbols defined in the TOC,
8901 but handle them anyway. */
8902 if (local_syms != NULL)
8903 for (sym = local_syms;
8904 sym < local_syms + symtab_hdr->sh_info;
8906 if (sym->st_value != 0
8907 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8911 if (sym->st_value > toc->rawsize)
8912 i = toc->rawsize >> 3;
8914 i = sym->st_value >> 3;
8916 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8919 (*_bfd_error_handler)
8920 (_("%s defined on removed toc entry"),
8921 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8924 while ((skip[i] & (ref_from_discarded | can_optimize)));
8925 sym->st_value = (bfd_vma) i << 3;
8928 sym->st_value -= skip[i];
8929 symtab_hdr->contents = (unsigned char *) local_syms;
8932 /* Adjust any global syms defined in this toc input section. */
8933 if (toc_inf.global_toc_syms)
8936 toc_inf.skip = skip;
8937 toc_inf.global_toc_syms = FALSE;
8938 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8942 if (toc->reloc_count != 0)
8944 Elf_Internal_Shdr *rel_hdr;
8945 Elf_Internal_Rela *wrel;
8948 /* Remove unused toc relocs, and adjust those we keep. */
8949 if (toc_relocs == NULL)
8950 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8952 if (toc_relocs == NULL)
8956 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8957 if ((skip[rel->r_offset >> 3]
8958 & (ref_from_discarded | can_optimize)) == 0)
8960 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8961 wrel->r_info = rel->r_info;
8962 wrel->r_addend = rel->r_addend;
8965 else if (!dec_dynrel_count (rel->r_info, toc, info,
8966 &local_syms, NULL, NULL))
8969 elf_section_data (toc)->relocs = toc_relocs;
8970 toc->reloc_count = wrel - toc_relocs;
8971 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8972 sz = rel_hdr->sh_entsize;
8973 rel_hdr->sh_size = toc->reloc_count * sz;
8976 else if (toc_relocs != NULL
8977 && elf_section_data (toc)->relocs != toc_relocs)
8980 if (local_syms != NULL
8981 && symtab_hdr->contents != (unsigned char *) local_syms)
8983 if (!info->keep_memory)
8986 symtab_hdr->contents = (unsigned char *) local_syms;
8994 /* Return true iff input section I references the TOC using
8995 instructions limited to +/-32k offsets. */
8998 ppc64_elf_has_small_toc_reloc (asection *i)
9000 return (is_ppc64_elf (i->owner)
9001 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9004 /* Allocate space for one GOT entry. */
9007 allocate_got (struct elf_link_hash_entry *h,
9008 struct bfd_link_info *info,
9009 struct got_entry *gent)
9011 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9013 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9014 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9016 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9017 ? 2 : 1) * sizeof (Elf64_External_Rela);
9018 asection *got = ppc64_elf_tdata (gent->owner)->got;
9020 gent->got.offset = got->size;
9021 got->size += entsize;
9023 dyn = htab->elf.dynamic_sections_created;
9024 if (h->type == STT_GNU_IFUNC)
9026 htab->reliplt->size += rentsize;
9027 htab->got_reli_size += rentsize;
9029 else if ((info->shared
9030 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9031 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9032 || h->root.type != bfd_link_hash_undefweak))
9034 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9035 relgot->size += rentsize;
9039 /* This function merges got entries in the same toc group. */
9042 merge_got_entries (struct got_entry **pent)
9044 struct got_entry *ent, *ent2;
9046 for (ent = *pent; ent != NULL; ent = ent->next)
9047 if (!ent->is_indirect)
9048 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9049 if (!ent2->is_indirect
9050 && ent2->addend == ent->addend
9051 && ent2->tls_type == ent->tls_type
9052 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9054 ent2->is_indirect = TRUE;
9055 ent2->got.ent = ent;
9059 /* Allocate space in .plt, .got and associated reloc sections for
9063 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9065 struct bfd_link_info *info;
9066 struct ppc_link_hash_table *htab;
9068 struct ppc_link_hash_entry *eh;
9069 struct elf_dyn_relocs *p;
9070 struct got_entry **pgent, *gent;
9072 if (h->root.type == bfd_link_hash_indirect)
9075 info = (struct bfd_link_info *) inf;
9076 htab = ppc_hash_table (info);
9080 if ((htab->elf.dynamic_sections_created
9082 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9083 || h->type == STT_GNU_IFUNC)
9085 struct plt_entry *pent;
9086 bfd_boolean doneone = FALSE;
9087 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9088 if (pent->plt.refcount > 0)
9090 if (!htab->elf.dynamic_sections_created
9091 || h->dynindx == -1)
9094 pent->plt.offset = s->size;
9095 s->size += PLT_ENTRY_SIZE;
9100 /* If this is the first .plt entry, make room for the special
9104 s->size += PLT_INITIAL_ENTRY_SIZE;
9106 pent->plt.offset = s->size;
9108 /* Make room for this entry. */
9109 s->size += PLT_ENTRY_SIZE;
9111 /* Make room for the .glink code. */
9114 s->size += GLINK_CALL_STUB_SIZE;
9115 /* We need bigger stubs past index 32767. */
9116 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9120 /* We also need to make an entry in the .rela.plt section. */
9123 s->size += sizeof (Elf64_External_Rela);
9127 pent->plt.offset = (bfd_vma) -1;
9130 h->plt.plist = NULL;
9136 h->plt.plist = NULL;
9140 eh = (struct ppc_link_hash_entry *) h;
9141 /* Run through the TLS GD got entries first if we're changing them
9143 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9144 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9145 if (gent->got.refcount > 0
9146 && (gent->tls_type & TLS_GD) != 0)
9148 /* This was a GD entry that has been converted to TPREL. If
9149 there happens to be a TPREL entry we can use that one. */
9150 struct got_entry *ent;
9151 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9152 if (ent->got.refcount > 0
9153 && (ent->tls_type & TLS_TPREL) != 0
9154 && ent->addend == gent->addend
9155 && ent->owner == gent->owner)
9157 gent->got.refcount = 0;
9161 /* If not, then we'll be using our own TPREL entry. */
9162 if (gent->got.refcount != 0)
9163 gent->tls_type = TLS_TLS | TLS_TPREL;
9166 /* Remove any list entry that won't generate a word in the GOT before
9167 we call merge_got_entries. Otherwise we risk merging to empty
9169 pgent = &h->got.glist;
9170 while ((gent = *pgent) != NULL)
9171 if (gent->got.refcount > 0)
9173 if ((gent->tls_type & TLS_LD) != 0
9176 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9177 *pgent = gent->next;
9180 pgent = &gent->next;
9183 *pgent = gent->next;
9185 if (!htab->do_multi_toc)
9186 merge_got_entries (&h->got.glist);
9188 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9189 if (!gent->is_indirect)
9191 /* Make sure this symbol is output as a dynamic symbol.
9192 Undefined weak syms won't yet be marked as dynamic,
9193 nor will all TLS symbols. */
9194 if (h->dynindx == -1
9196 && h->type != STT_GNU_IFUNC
9197 && htab->elf.dynamic_sections_created)
9199 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9203 if (!is_ppc64_elf (gent->owner))
9206 allocate_got (h, info, gent);
9209 if (eh->dyn_relocs == NULL
9210 || (!htab->elf.dynamic_sections_created
9211 && h->type != STT_GNU_IFUNC))
9214 /* In the shared -Bsymbolic case, discard space allocated for
9215 dynamic pc-relative relocs against symbols which turn out to be
9216 defined in regular objects. For the normal shared case, discard
9217 space for relocs that have become local due to symbol visibility
9222 /* Relocs that use pc_count are those that appear on a call insn,
9223 or certain REL relocs (see must_be_dyn_reloc) that can be
9224 generated via assembly. We want calls to protected symbols to
9225 resolve directly to the function rather than going via the plt.
9226 If people want function pointer comparisons to work as expected
9227 then they should avoid writing weird assembly. */
9228 if (SYMBOL_CALLS_LOCAL (info, h))
9230 struct elf_dyn_relocs **pp;
9232 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9234 p->count -= p->pc_count;
9243 /* Also discard relocs on undefined weak syms with non-default
9245 if (eh->dyn_relocs != NULL
9246 && h->root.type == bfd_link_hash_undefweak)
9248 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9249 eh->dyn_relocs = NULL;
9251 /* Make sure this symbol is output as a dynamic symbol.
9252 Undefined weak syms won't yet be marked as dynamic. */
9253 else if (h->dynindx == -1
9254 && !h->forced_local)
9256 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9261 else if (h->type == STT_GNU_IFUNC)
9263 if (!h->non_got_ref)
9264 eh->dyn_relocs = NULL;
9266 else if (ELIMINATE_COPY_RELOCS)
9268 /* For the non-shared case, discard space for relocs against
9269 symbols which turn out to need copy relocs or are not
9275 /* Make sure this symbol is output as a dynamic symbol.
9276 Undefined weak syms won't yet be marked as dynamic. */
9277 if (h->dynindx == -1
9278 && !h->forced_local)
9280 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9284 /* If that succeeded, we know we'll be keeping all the
9286 if (h->dynindx != -1)
9290 eh->dyn_relocs = NULL;
9295 /* Finally, allocate space. */
9296 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9298 asection *sreloc = elf_section_data (p->sec)->sreloc;
9299 if (eh->elf.type == STT_GNU_IFUNC)
9300 sreloc = htab->reliplt;
9301 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9307 /* Find any dynamic relocs that apply to read-only sections. */
9310 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9312 struct ppc_link_hash_entry *eh;
9313 struct elf_dyn_relocs *p;
9315 eh = (struct ppc_link_hash_entry *) h;
9316 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9318 asection *s = p->sec->output_section;
9320 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9322 struct bfd_link_info *info = inf;
9324 info->flags |= DF_TEXTREL;
9326 /* Not an error, just cut short the traversal. */
9333 /* Set the sizes of the dynamic sections. */
9336 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
9337 struct bfd_link_info *info)
9339 struct ppc_link_hash_table *htab;
9344 struct got_entry *first_tlsld;
9346 htab = ppc_hash_table (info);
9350 dynobj = htab->elf.dynobj;
9354 if (htab->elf.dynamic_sections_created)
9356 /* Set the contents of the .interp section to the interpreter. */
9357 if (info->executable)
9359 s = bfd_get_linker_section (dynobj, ".interp");
9362 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9363 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9367 /* Set up .got offsets for local syms, and space for local dynamic
9369 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9371 struct got_entry **lgot_ents;
9372 struct got_entry **end_lgot_ents;
9373 struct plt_entry **local_plt;
9374 struct plt_entry **end_local_plt;
9375 unsigned char *lgot_masks;
9376 bfd_size_type locsymcount;
9377 Elf_Internal_Shdr *symtab_hdr;
9379 if (!is_ppc64_elf (ibfd))
9382 for (s = ibfd->sections; s != NULL; s = s->next)
9384 struct ppc_dyn_relocs *p;
9386 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9388 if (!bfd_is_abs_section (p->sec)
9389 && bfd_is_abs_section (p->sec->output_section))
9391 /* Input section has been discarded, either because
9392 it is a copy of a linkonce section or due to
9393 linker script /DISCARD/, so we'll be discarding
9396 else if (p->count != 0)
9398 asection *srel = elf_section_data (p->sec)->sreloc;
9400 srel = htab->reliplt;
9401 srel->size += p->count * sizeof (Elf64_External_Rela);
9402 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9403 info->flags |= DF_TEXTREL;
9408 lgot_ents = elf_local_got_ents (ibfd);
9412 symtab_hdr = &elf_symtab_hdr (ibfd);
9413 locsymcount = symtab_hdr->sh_info;
9414 end_lgot_ents = lgot_ents + locsymcount;
9415 local_plt = (struct plt_entry **) end_lgot_ents;
9416 end_local_plt = local_plt + locsymcount;
9417 lgot_masks = (unsigned char *) end_local_plt;
9418 s = ppc64_elf_tdata (ibfd)->got;
9419 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9421 struct got_entry **pent, *ent;
9424 while ((ent = *pent) != NULL)
9425 if (ent->got.refcount > 0)
9427 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9429 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9434 unsigned int ent_size = 8;
9435 unsigned int rel_size = sizeof (Elf64_External_Rela);
9437 ent->got.offset = s->size;
9438 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9443 s->size += ent_size;
9444 if ((*lgot_masks & PLT_IFUNC) != 0)
9446 htab->reliplt->size += rel_size;
9447 htab->got_reli_size += rel_size;
9449 else if (info->shared)
9451 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9452 srel->size += rel_size;
9461 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9462 for (; local_plt < end_local_plt; ++local_plt)
9464 struct plt_entry *ent;
9466 for (ent = *local_plt; ent != NULL; ent = ent->next)
9467 if (ent->plt.refcount > 0)
9470 ent->plt.offset = s->size;
9471 s->size += PLT_ENTRY_SIZE;
9473 htab->reliplt->size += sizeof (Elf64_External_Rela);
9476 ent->plt.offset = (bfd_vma) -1;
9480 /* Allocate global sym .plt and .got entries, and space for global
9481 sym dynamic relocs. */
9482 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9485 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9487 struct got_entry *ent;
9489 if (!is_ppc64_elf (ibfd))
9492 ent = ppc64_tlsld_got (ibfd);
9493 if (ent->got.refcount > 0)
9495 if (!htab->do_multi_toc && first_tlsld != NULL)
9497 ent->is_indirect = TRUE;
9498 ent->got.ent = first_tlsld;
9502 if (first_tlsld == NULL)
9504 s = ppc64_elf_tdata (ibfd)->got;
9505 ent->got.offset = s->size;
9510 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9511 srel->size += sizeof (Elf64_External_Rela);
9516 ent->got.offset = (bfd_vma) -1;
9519 /* We now have determined the sizes of the various dynamic sections.
9520 Allocate memory for them. */
9522 for (s = dynobj->sections; s != NULL; s = s->next)
9524 if ((s->flags & SEC_LINKER_CREATED) == 0)
9527 if (s == htab->brlt || s == htab->relbrlt)
9528 /* These haven't been allocated yet; don't strip. */
9530 else if (s == htab->got
9534 || s == htab->dynbss)
9536 /* Strip this section if we don't need it; see the
9539 else if (s == htab->glink_eh_frame)
9541 if (!bfd_is_abs_section (s->output_section))
9542 /* Not sized yet. */
9545 else if (CONST_STRNEQ (s->name, ".rela"))
9549 if (s != htab->relplt)
9552 /* We use the reloc_count field as a counter if we need
9553 to copy relocs into the output file. */
9559 /* It's not one of our sections, so don't allocate space. */
9565 /* If we don't need this section, strip it from the
9566 output file. This is mostly to handle .rela.bss and
9567 .rela.plt. We must create both sections in
9568 create_dynamic_sections, because they must be created
9569 before the linker maps input sections to output
9570 sections. The linker does that before
9571 adjust_dynamic_symbol is called, and it is that
9572 function which decides whether anything needs to go
9573 into these sections. */
9574 s->flags |= SEC_EXCLUDE;
9578 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9581 /* Allocate memory for the section contents. We use bfd_zalloc
9582 here in case unused entries are not reclaimed before the
9583 section's contents are written out. This should not happen,
9584 but this way if it does we get a R_PPC64_NONE reloc in .rela
9585 sections instead of garbage.
9586 We also rely on the section contents being zero when writing
9588 s->contents = bfd_zalloc (dynobj, s->size);
9589 if (s->contents == NULL)
9593 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9595 if (!is_ppc64_elf (ibfd))
9598 s = ppc64_elf_tdata (ibfd)->got;
9599 if (s != NULL && s != htab->got)
9602 s->flags |= SEC_EXCLUDE;
9605 s->contents = bfd_zalloc (ibfd, s->size);
9606 if (s->contents == NULL)
9610 s = ppc64_elf_tdata (ibfd)->relgot;
9614 s->flags |= SEC_EXCLUDE;
9617 s->contents = bfd_zalloc (ibfd, s->size);
9618 if (s->contents == NULL)
9626 if (htab->elf.dynamic_sections_created)
9628 /* Add some entries to the .dynamic section. We fill in the
9629 values later, in ppc64_elf_finish_dynamic_sections, but we
9630 must add the entries now so that we get the correct size for
9631 the .dynamic section. The DT_DEBUG entry is filled in by the
9632 dynamic linker and used by the debugger. */
9633 #define add_dynamic_entry(TAG, VAL) \
9634 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9636 if (info->executable)
9638 if (!add_dynamic_entry (DT_DEBUG, 0))
9642 if (htab->plt != NULL && htab->plt->size != 0)
9644 if (!add_dynamic_entry (DT_PLTGOT, 0)
9645 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9646 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9647 || !add_dynamic_entry (DT_JMPREL, 0)
9648 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9654 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9655 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9659 if (!htab->no_tls_get_addr_opt
9660 && htab->tls_get_addr_fd != NULL
9661 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9662 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9667 if (!add_dynamic_entry (DT_RELA, 0)
9668 || !add_dynamic_entry (DT_RELASZ, 0)
9669 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9672 /* If any dynamic relocs apply to a read-only section,
9673 then we need a DT_TEXTREL entry. */
9674 if ((info->flags & DF_TEXTREL) == 0)
9675 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9677 if ((info->flags & DF_TEXTREL) != 0)
9679 if (!add_dynamic_entry (DT_TEXTREL, 0))
9684 #undef add_dynamic_entry
9689 /* Determine the type of stub needed, if any, for a call. */
9691 static inline enum ppc_stub_type
9692 ppc_type_of_stub (asection *input_sec,
9693 const Elf_Internal_Rela *rel,
9694 struct ppc_link_hash_entry **hash,
9695 struct plt_entry **plt_ent,
9696 bfd_vma destination)
9698 struct ppc_link_hash_entry *h = *hash;
9700 bfd_vma branch_offset;
9701 bfd_vma max_branch_offset;
9702 enum elf_ppc64_reloc_type r_type;
9706 struct plt_entry *ent;
9707 struct ppc_link_hash_entry *fdh = h;
9709 && h->oh->is_func_descriptor)
9711 fdh = ppc_follow_link (h->oh);
9715 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9716 if (ent->addend == rel->r_addend
9717 && ent->plt.offset != (bfd_vma) -1)
9720 return ppc_stub_plt_call;
9723 /* Here, we know we don't have a plt entry. If we don't have a
9724 either a defined function descriptor or a defined entry symbol
9725 in a regular object file, then it is pointless trying to make
9726 any other type of stub. */
9727 if (!is_static_defined (&fdh->elf)
9728 && !is_static_defined (&h->elf))
9729 return ppc_stub_none;
9731 else if (elf_local_got_ents (input_sec->owner) != NULL)
9733 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9734 struct plt_entry **local_plt = (struct plt_entry **)
9735 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9736 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9738 if (local_plt[r_symndx] != NULL)
9740 struct plt_entry *ent;
9742 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9743 if (ent->addend == rel->r_addend
9744 && ent->plt.offset != (bfd_vma) -1)
9747 return ppc_stub_plt_call;
9752 /* Determine where the call point is. */
9753 location = (input_sec->output_offset
9754 + input_sec->output_section->vma
9757 branch_offset = destination - location;
9758 r_type = ELF64_R_TYPE (rel->r_info);
9760 /* Determine if a long branch stub is needed. */
9761 max_branch_offset = 1 << 25;
9762 if (r_type != R_PPC64_REL24)
9763 max_branch_offset = 1 << 15;
9765 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9766 /* We need a stub. Figure out whether a long_branch or plt_branch
9768 return ppc_stub_long_branch;
9770 return ppc_stub_none;
9773 /* With power7 weakly ordered memory model, it is possible for ld.so
9774 to update a plt entry in one thread and have another thread see a
9775 stale zero toc entry. To avoid this we need some sort of acquire
9776 barrier in the call stub. One solution is to make the load of the
9777 toc word seem to appear to depend on the load of the function entry
9778 word. Another solution is to test for r2 being zero, and branch to
9779 the appropriate glink entry if so.
9781 . fake dep barrier compare
9782 . ld 12,xxx(2) ld 12,xxx(2)
9784 . xor 11,12,12 ld 2,xxx+8(2)
9785 . add 2,2,11 cmpldi 2,0
9786 . ld 2,xxx+8(2) bnectr+
9787 . bctr b <glink_entry>
9789 The solution involving the compare turns out to be faster, so
9790 that's what we use unless the branch won't reach. */
9792 #define ALWAYS_USE_FAKE_DEP 0
9793 #define ALWAYS_EMIT_R2SAVE 0
9795 #define PPC_LO(v) ((v) & 0xffff)
9796 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9797 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9799 static inline unsigned int
9800 plt_stub_size (struct ppc_link_hash_table *htab,
9801 struct ppc_stub_hash_entry *stub_entry,
9804 unsigned size = PLT_CALL_STUB_SIZE;
9806 if (!(ALWAYS_EMIT_R2SAVE
9807 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
9809 if (!htab->plt_static_chain)
9811 if (htab->plt_thread_safe)
9813 if (PPC_HA (off) == 0)
9815 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
9817 if (stub_entry->h != NULL
9818 && (stub_entry->h == htab->tls_get_addr_fd
9819 || stub_entry->h == htab->tls_get_addr)
9820 && !htab->no_tls_get_addr_opt)
9825 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9826 then return the padding needed to do so. */
9827 static inline unsigned int
9828 plt_stub_pad (struct ppc_link_hash_table *htab,
9829 struct ppc_stub_hash_entry *stub_entry,
9832 int stub_align = 1 << htab->plt_stub_align;
9833 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
9834 bfd_vma stub_off = stub_entry->stub_sec->size;
9836 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
9837 > (stub_size & -stub_align))
9838 return stub_align - (stub_off & (stub_align - 1));
9842 /* Build a .plt call stub. */
9844 static inline bfd_byte *
9845 build_plt_stub (struct ppc_link_hash_table *htab,
9846 struct ppc_stub_hash_entry *stub_entry,
9847 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9849 bfd *obfd = htab->stub_bfd;
9850 bfd_boolean plt_static_chain = htab->plt_static_chain;
9851 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
9852 bfd_boolean use_fake_dep = plt_thread_safe;
9853 bfd_vma cmp_branch_off = 0;
9855 if (!ALWAYS_USE_FAKE_DEP
9857 && !(stub_entry->h != NULL
9858 && (stub_entry->h == htab->tls_get_addr_fd
9859 || stub_entry->h == htab->tls_get_addr)
9860 && !htab->no_tls_get_addr_opt))
9862 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
9863 bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9864 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
9867 if (pltindex > 32768)
9868 glinkoff += (pltindex - 32768) * 4;
9870 + htab->glink->output_offset
9871 + htab->glink->output_section->vma);
9872 from = (p - stub_entry->stub_sec->contents
9873 + 4 * (ALWAYS_EMIT_R2SAVE
9874 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9875 + 4 * (PPC_HA (offset) != 0)
9876 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
9878 + 4 * (plt_static_chain != 0)
9880 + stub_entry->stub_sec->output_offset
9881 + stub_entry->stub_sec->output_section->vma);
9882 cmp_branch_off = to - from;
9883 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
9886 if (PPC_HA (offset) != 0)
9890 if (ALWAYS_EMIT_R2SAVE
9891 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9893 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9894 r[1].r_offset = r[0].r_offset + 4;
9895 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9896 r[1].r_addend = r[0].r_addend;
9897 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9899 r[2].r_offset = r[1].r_offset + 4;
9900 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9901 r[2].r_addend = r[0].r_addend;
9905 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
9906 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9907 r[2].r_addend = r[0].r_addend + 8;
9908 if (plt_static_chain)
9910 r[3].r_offset = r[2].r_offset + 4;
9911 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9912 r[3].r_addend = r[0].r_addend + 16;
9916 if (ALWAYS_EMIT_R2SAVE
9917 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9918 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9919 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
9920 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
9921 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9923 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
9926 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
9929 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
9930 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
9932 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
9933 if (plt_static_chain)
9934 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
9940 if (ALWAYS_EMIT_R2SAVE
9941 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9943 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9944 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9946 r[1].r_offset = r[0].r_offset + 4;
9947 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9948 r[1].r_addend = r[0].r_addend;
9952 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
9953 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9954 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
9955 if (plt_static_chain)
9957 r[2].r_offset = r[1].r_offset + 4;
9958 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9959 r[2].r_addend = r[0].r_addend + 8;
9963 if (ALWAYS_EMIT_R2SAVE
9964 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9965 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9966 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
9967 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9969 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9972 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
9975 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
9976 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
9978 if (plt_static_chain)
9979 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9980 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9982 if (plt_thread_safe && !use_fake_dep)
9984 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
9985 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
9986 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
9989 bfd_put_32 (obfd, BCTR, p), p += 4;
9993 /* Build a special .plt call stub for __tls_get_addr. */
9995 #define LD_R11_0R3 0xe9630000
9996 #define LD_R12_0R3 0xe9830000
9997 #define MR_R0_R3 0x7c601b78
9998 #define CMPDI_R11_0 0x2c2b0000
9999 #define ADD_R3_R12_R13 0x7c6c6a14
10000 #define BEQLR 0x4d820020
10001 #define MR_R3_R0 0x7c030378
10002 #define MFLR_R11 0x7d6802a6
10003 #define STD_R11_0R1 0xf9610000
10004 #define BCTRL 0x4e800421
10005 #define LD_R11_0R1 0xe9610000
10006 #define LD_R2_0R1 0xe8410000
10007 #define MTLR_R11 0x7d6803a6
10009 static inline bfd_byte *
10010 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10011 struct ppc_stub_hash_entry *stub_entry,
10012 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10014 bfd *obfd = htab->stub_bfd;
10016 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10017 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10018 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10019 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10020 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10021 bfd_put_32 (obfd, BEQLR, p), p += 4;
10022 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10023 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10024 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
10027 r[0].r_offset += 9 * 4;
10028 p = build_plt_stub (htab, stub_entry, p, offset, r);
10029 bfd_put_32 (obfd, BCTRL, p - 4);
10031 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
10032 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
10033 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10034 bfd_put_32 (obfd, BLR, p), p += 4;
10039 static Elf_Internal_Rela *
10040 get_relocs (asection *sec, int count)
10042 Elf_Internal_Rela *relocs;
10043 struct bfd_elf_section_data *elfsec_data;
10045 elfsec_data = elf_section_data (sec);
10046 relocs = elfsec_data->relocs;
10047 if (relocs == NULL)
10049 bfd_size_type relsize;
10050 relsize = sec->reloc_count * sizeof (*relocs);
10051 relocs = bfd_alloc (sec->owner, relsize);
10052 if (relocs == NULL)
10054 elfsec_data->relocs = relocs;
10055 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10056 sizeof (Elf_Internal_Shdr));
10057 if (elfsec_data->rela.hdr == NULL)
10059 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10060 * sizeof (Elf64_External_Rela));
10061 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10062 sec->reloc_count = 0;
10064 relocs += sec->reloc_count;
10065 sec->reloc_count += count;
10070 get_r2off (struct bfd_link_info *info,
10071 struct ppc_stub_hash_entry *stub_entry)
10073 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10074 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10078 /* Support linking -R objects. Get the toc pointer from the
10081 asection *opd = stub_entry->h->elf.root.u.def.section;
10082 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10084 if (strcmp (opd->name, ".opd") != 0
10085 || opd->reloc_count != 0)
10087 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10088 stub_entry->h->elf.root.root.string);
10089 bfd_set_error (bfd_error_bad_value);
10092 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10094 r2off = bfd_get_64 (opd->owner, buf);
10095 r2off -= elf_gp (info->output_bfd);
10097 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10102 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10104 struct ppc_stub_hash_entry *stub_entry;
10105 struct ppc_branch_hash_entry *br_entry;
10106 struct bfd_link_info *info;
10107 struct ppc_link_hash_table *htab;
10112 Elf_Internal_Rela *r;
10115 /* Massage our args to the form they really have. */
10116 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10119 htab = ppc_hash_table (info);
10123 /* Make a note of the offset within the stubs for this entry. */
10124 stub_entry->stub_offset = stub_entry->stub_sec->size;
10125 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10127 htab->stub_count[stub_entry->stub_type - 1] += 1;
10128 switch (stub_entry->stub_type)
10130 case ppc_stub_long_branch:
10131 case ppc_stub_long_branch_r2off:
10132 /* Branches are relative. This is where we are going to. */
10133 off = dest = (stub_entry->target_value
10134 + stub_entry->target_section->output_offset
10135 + stub_entry->target_section->output_section->vma);
10137 /* And this is where we are coming from. */
10138 off -= (stub_entry->stub_offset
10139 + stub_entry->stub_sec->output_offset
10140 + stub_entry->stub_sec->output_section->vma);
10143 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10145 bfd_vma r2off = get_r2off (info, stub_entry);
10149 htab->stub_error = TRUE;
10152 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10155 if (PPC_HA (r2off) != 0)
10158 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10161 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10165 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10167 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10169 info->callbacks->einfo
10170 (_("%P: long branch stub `%s' offset overflow\n"),
10171 stub_entry->root.string);
10172 htab->stub_error = TRUE;
10176 if (info->emitrelocations)
10178 r = get_relocs (stub_entry->stub_sec, 1);
10181 r->r_offset = loc - stub_entry->stub_sec->contents;
10182 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10183 r->r_addend = dest;
10184 if (stub_entry->h != NULL)
10186 struct elf_link_hash_entry **hashes;
10187 unsigned long symndx;
10188 struct ppc_link_hash_entry *h;
10190 hashes = elf_sym_hashes (htab->stub_bfd);
10191 if (hashes == NULL)
10193 bfd_size_type hsize;
10195 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10196 hashes = bfd_zalloc (htab->stub_bfd, hsize);
10197 if (hashes == NULL)
10199 elf_sym_hashes (htab->stub_bfd) = hashes;
10200 htab->stub_globals = 1;
10202 symndx = htab->stub_globals++;
10204 hashes[symndx] = &h->elf;
10205 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10206 if (h->oh != NULL && h->oh->is_func)
10207 h = ppc_follow_link (h->oh);
10208 if (h->elf.root.u.def.section != stub_entry->target_section)
10209 /* H is an opd symbol. The addend must be zero. */
10213 off = (h->elf.root.u.def.value
10214 + h->elf.root.u.def.section->output_offset
10215 + h->elf.root.u.def.section->output_section->vma);
10216 r->r_addend -= off;
10222 case ppc_stub_plt_branch:
10223 case ppc_stub_plt_branch_r2off:
10224 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10225 stub_entry->root.string + 9,
10227 if (br_entry == NULL)
10229 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10230 stub_entry->root.string);
10231 htab->stub_error = TRUE;
10235 dest = (stub_entry->target_value
10236 + stub_entry->target_section->output_offset
10237 + stub_entry->target_section->output_section->vma);
10239 bfd_put_64 (htab->brlt->owner, dest,
10240 htab->brlt->contents + br_entry->offset);
10242 if (br_entry->iter == htab->stub_iteration)
10244 br_entry->iter = 0;
10246 if (htab->relbrlt != NULL)
10248 /* Create a reloc for the branch lookup table entry. */
10249 Elf_Internal_Rela rela;
10252 rela.r_offset = (br_entry->offset
10253 + htab->brlt->output_offset
10254 + htab->brlt->output_section->vma);
10255 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10256 rela.r_addend = dest;
10258 rl = htab->relbrlt->contents;
10259 rl += (htab->relbrlt->reloc_count++
10260 * sizeof (Elf64_External_Rela));
10261 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10263 else if (info->emitrelocations)
10265 r = get_relocs (htab->brlt, 1);
10268 /* brlt, being SEC_LINKER_CREATED does not go through the
10269 normal reloc processing. Symbols and offsets are not
10270 translated from input file to output file form, so
10271 set up the offset per the output file. */
10272 r->r_offset = (br_entry->offset
10273 + htab->brlt->output_offset
10274 + htab->brlt->output_section->vma);
10275 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10276 r->r_addend = dest;
10280 dest = (br_entry->offset
10281 + htab->brlt->output_offset
10282 + htab->brlt->output_section->vma);
10285 - elf_gp (htab->brlt->output_section->owner)
10286 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10288 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10290 info->callbacks->einfo
10291 (_("%P: linkage table error against `%T'\n"),
10292 stub_entry->root.string);
10293 bfd_set_error (bfd_error_bad_value);
10294 htab->stub_error = TRUE;
10298 if (info->emitrelocations)
10300 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10303 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10304 if (bfd_big_endian (info->output_bfd))
10305 r[0].r_offset += 2;
10306 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10307 r[0].r_offset += 4;
10308 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10309 r[0].r_addend = dest;
10310 if (PPC_HA (off) != 0)
10312 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10313 r[1].r_offset = r[0].r_offset + 4;
10314 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10315 r[1].r_addend = r[0].r_addend;
10319 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10321 if (PPC_HA (off) != 0)
10324 bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
10326 bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
10331 bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10336 bfd_vma r2off = get_r2off (info, stub_entry);
10340 htab->stub_error = TRUE;
10344 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10347 if (PPC_HA (off) != 0)
10350 bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
10352 bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
10357 bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10361 if (PPC_HA (r2off) != 0)
10364 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10367 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10370 bfd_put_32 (htab->stub_bfd, MTCTR_R12, loc);
10372 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10375 case ppc_stub_plt_call:
10376 case ppc_stub_plt_call_r2save:
10377 if (stub_entry->h != NULL
10378 && stub_entry->h->is_func_descriptor
10379 && stub_entry->h->oh != NULL)
10381 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10383 /* If the old-ABI "dot-symbol" is undefined make it weak so
10384 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10385 FIXME: We used to define the symbol on one of the call
10386 stubs instead, which is why we test symbol section id
10387 against htab->top_id in various places. Likely all
10388 these checks could now disappear. */
10389 if (fh->elf.root.type == bfd_link_hash_undefined)
10390 fh->elf.root.type = bfd_link_hash_undefweak;
10391 /* Stop undo_symbol_twiddle changing it back to undefined. */
10392 fh->was_undefined = 0;
10395 /* Now build the stub. */
10396 dest = stub_entry->plt_ent->plt.offset & ~1;
10397 if (dest >= (bfd_vma) -2)
10401 if (!htab->elf.dynamic_sections_created
10402 || stub_entry->h == NULL
10403 || stub_entry->h->elf.dynindx == -1)
10406 dest += plt->output_offset + plt->output_section->vma;
10408 if (stub_entry->h == NULL
10409 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10411 Elf_Internal_Rela rela;
10414 rela.r_offset = dest;
10415 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10416 rela.r_addend = (stub_entry->target_value
10417 + stub_entry->target_section->output_offset
10418 + stub_entry->target_section->output_section->vma);
10420 rl = (htab->reliplt->contents
10421 + (htab->reliplt->reloc_count++
10422 * sizeof (Elf64_External_Rela)));
10423 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10424 stub_entry->plt_ent->plt.offset |= 1;
10428 - elf_gp (plt->output_section->owner)
10429 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10431 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10433 info->callbacks->einfo
10434 (_("%P: linkage table error against `%T'\n"),
10435 stub_entry->h != NULL
10436 ? stub_entry->h->elf.root.root.string
10438 bfd_set_error (bfd_error_bad_value);
10439 htab->stub_error = TRUE;
10443 if (htab->plt_stub_align != 0)
10445 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10447 stub_entry->stub_sec->size += pad;
10448 stub_entry->stub_offset = stub_entry->stub_sec->size;
10453 if (info->emitrelocations)
10455 r = get_relocs (stub_entry->stub_sec,
10457 + (PPC_HA (off) != 0)
10458 + (htab->plt_static_chain
10459 && PPC_HA (off + 16) == PPC_HA (off))));
10462 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10463 if (bfd_big_endian (info->output_bfd))
10464 r[0].r_offset += 2;
10465 r[0].r_addend = dest;
10467 if (stub_entry->h != NULL
10468 && (stub_entry->h == htab->tls_get_addr_fd
10469 || stub_entry->h == htab->tls_get_addr)
10470 && !htab->no_tls_get_addr_opt)
10471 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10473 p = build_plt_stub (htab, stub_entry, loc, off, r);
10482 stub_entry->stub_sec->size += size;
10484 if (htab->emit_stub_syms)
10486 struct elf_link_hash_entry *h;
10489 const char *const stub_str[] = { "long_branch",
10490 "long_branch_r2off",
10492 "plt_branch_r2off",
10496 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10497 len2 = strlen (stub_entry->root.string);
10498 name = bfd_malloc (len1 + len2 + 2);
10501 memcpy (name, stub_entry->root.string, 9);
10502 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10503 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10504 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10507 if (h->root.type == bfd_link_hash_new)
10509 h->root.type = bfd_link_hash_defined;
10510 h->root.u.def.section = stub_entry->stub_sec;
10511 h->root.u.def.value = stub_entry->stub_offset;
10512 h->ref_regular = 1;
10513 h->def_regular = 1;
10514 h->ref_regular_nonweak = 1;
10515 h->forced_local = 1;
10523 /* As above, but don't actually build the stub. Just bump offset so
10524 we know stub section sizes, and select plt_branch stubs where
10525 long_branch stubs won't do. */
10528 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10530 struct ppc_stub_hash_entry *stub_entry;
10531 struct bfd_link_info *info;
10532 struct ppc_link_hash_table *htab;
10536 /* Massage our args to the form they really have. */
10537 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10540 htab = ppc_hash_table (info);
10544 if (stub_entry->stub_type == ppc_stub_plt_call
10545 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10548 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10549 if (off >= (bfd_vma) -2)
10552 if (!htab->elf.dynamic_sections_created
10553 || stub_entry->h == NULL
10554 || stub_entry->h->elf.dynindx == -1)
10556 off += (plt->output_offset
10557 + plt->output_section->vma
10558 - elf_gp (plt->output_section->owner)
10559 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10561 size = plt_stub_size (htab, stub_entry, off);
10562 if (htab->plt_stub_align)
10563 size += plt_stub_pad (htab, stub_entry, off);
10564 if (info->emitrelocations)
10566 stub_entry->stub_sec->reloc_count
10568 + (PPC_HA (off) != 0)
10569 + (htab->plt_static_chain
10570 && PPC_HA (off + 16) == PPC_HA (off)));
10571 stub_entry->stub_sec->flags |= SEC_RELOC;
10576 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10580 off = (stub_entry->target_value
10581 + stub_entry->target_section->output_offset
10582 + stub_entry->target_section->output_section->vma);
10583 off -= (stub_entry->stub_sec->size
10584 + stub_entry->stub_sec->output_offset
10585 + stub_entry->stub_sec->output_section->vma);
10587 /* Reset the stub type from the plt variant in case we now
10588 can reach with a shorter stub. */
10589 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10590 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10593 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10595 r2off = get_r2off (info, stub_entry);
10598 htab->stub_error = TRUE;
10602 if (PPC_HA (r2off) != 0)
10607 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10608 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10610 struct ppc_branch_hash_entry *br_entry;
10612 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10613 stub_entry->root.string + 9,
10615 if (br_entry == NULL)
10617 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10618 stub_entry->root.string);
10619 htab->stub_error = TRUE;
10623 if (br_entry->iter != htab->stub_iteration)
10625 br_entry->iter = htab->stub_iteration;
10626 br_entry->offset = htab->brlt->size;
10627 htab->brlt->size += 8;
10629 if (htab->relbrlt != NULL)
10630 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10631 else if (info->emitrelocations)
10633 htab->brlt->reloc_count += 1;
10634 htab->brlt->flags |= SEC_RELOC;
10638 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10639 off = (br_entry->offset
10640 + htab->brlt->output_offset
10641 + htab->brlt->output_section->vma
10642 - elf_gp (htab->brlt->output_section->owner)
10643 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10645 if (info->emitrelocations)
10647 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10648 stub_entry->stub_sec->flags |= SEC_RELOC;
10651 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10654 if (PPC_HA (off) != 0)
10660 if (PPC_HA (off) != 0)
10663 if (PPC_HA (r2off) != 0)
10667 else if (info->emitrelocations)
10669 stub_entry->stub_sec->reloc_count += 1;
10670 stub_entry->stub_sec->flags |= SEC_RELOC;
10674 stub_entry->stub_sec->size += size;
10678 /* Set up various things so that we can make a list of input sections
10679 for each output section included in the link. Returns -1 on error,
10680 0 when no stubs will be needed, and 1 on success. */
10683 ppc64_elf_setup_section_lists
10684 (struct bfd_link_info *info,
10685 asection *(*add_stub_section) (const char *, asection *),
10686 void (*layout_sections_again) (void))
10689 int top_id, top_index, id;
10691 asection **input_list;
10693 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10697 /* Stash our params away. */
10698 htab->add_stub_section = add_stub_section;
10699 htab->layout_sections_again = layout_sections_again;
10701 /* Find the top input section id. */
10702 for (input_bfd = info->input_bfds, top_id = 3;
10704 input_bfd = input_bfd->link_next)
10706 for (section = input_bfd->sections;
10708 section = section->next)
10710 if (top_id < section->id)
10711 top_id = section->id;
10715 htab->top_id = top_id;
10716 amt = sizeof (struct map_stub) * (top_id + 1);
10717 htab->stub_group = bfd_zmalloc (amt);
10718 if (htab->stub_group == NULL)
10721 /* Set toc_off for com, und, abs and ind sections. */
10722 for (id = 0; id < 3; id++)
10723 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10725 /* We can't use output_bfd->section_count here to find the top output
10726 section index as some sections may have been removed, and
10727 strip_excluded_output_sections doesn't renumber the indices. */
10728 for (section = info->output_bfd->sections, top_index = 0;
10730 section = section->next)
10732 if (top_index < section->index)
10733 top_index = section->index;
10736 htab->top_index = top_index;
10737 amt = sizeof (asection *) * (top_index + 1);
10738 input_list = bfd_zmalloc (amt);
10739 htab->input_list = input_list;
10740 if (input_list == NULL)
10746 /* Set up for first pass at multitoc partitioning. */
10749 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10751 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10753 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
10754 htab->toc_bfd = NULL;
10755 htab->toc_first_sec = NULL;
10758 /* The linker repeatedly calls this function for each TOC input section
10759 and linker generated GOT section. Group input bfds such that the toc
10760 within a group is less than 64k in size. */
10763 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10765 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10766 bfd_vma addr, off, limit;
10771 if (!htab->second_toc_pass)
10773 /* Keep track of the first .toc or .got section for this input bfd. */
10774 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
10778 htab->toc_bfd = isec->owner;
10779 htab->toc_first_sec = isec;
10782 addr = isec->output_offset + isec->output_section->vma;
10783 off = addr - htab->toc_curr;
10784 limit = 0x80008000;
10785 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10787 if (off + isec->size > limit)
10789 addr = (htab->toc_first_sec->output_offset
10790 + htab->toc_first_sec->output_section->vma);
10791 htab->toc_curr = addr;
10794 /* toc_curr is the base address of this toc group. Set elf_gp
10795 for the input section to be the offset relative to the
10796 output toc base plus 0x8000. Making the input elf_gp an
10797 offset allows us to move the toc as a whole without
10798 recalculating input elf_gp. */
10799 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10800 off += TOC_BASE_OFF;
10802 /* Die if someone uses a linker script that doesn't keep input
10803 file .toc and .got together. */
10805 && elf_gp (isec->owner) != 0
10806 && elf_gp (isec->owner) != off)
10809 elf_gp (isec->owner) = off;
10813 /* During the second pass toc_first_sec points to the start of
10814 a toc group, and toc_curr is used to track the old elf_gp.
10815 We use toc_bfd to ensure we only look at each bfd once. */
10816 if (htab->toc_bfd == isec->owner)
10818 htab->toc_bfd = isec->owner;
10820 if (htab->toc_first_sec == NULL
10821 || htab->toc_curr != elf_gp (isec->owner))
10823 htab->toc_curr = elf_gp (isec->owner);
10824 htab->toc_first_sec = isec;
10826 addr = (htab->toc_first_sec->output_offset
10827 + htab->toc_first_sec->output_section->vma);
10828 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10829 elf_gp (isec->owner) = off;
10834 /* Called via elf_link_hash_traverse to merge GOT entries for global
10838 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10840 if (h->root.type == bfd_link_hash_indirect)
10843 merge_got_entries (&h->got.glist);
10848 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10852 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10854 struct got_entry *gent;
10856 if (h->root.type == bfd_link_hash_indirect)
10859 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10860 if (!gent->is_indirect)
10861 allocate_got (h, (struct bfd_link_info *) inf, gent);
10865 /* Called on the first multitoc pass after the last call to
10866 ppc64_elf_next_toc_section. This function removes duplicate GOT
10870 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10872 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10873 struct bfd *ibfd, *ibfd2;
10874 bfd_boolean done_something;
10876 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10878 if (!htab->do_multi_toc)
10881 /* Merge global sym got entries within a toc group. */
10882 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10884 /* And tlsld_got. */
10885 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10887 struct got_entry *ent, *ent2;
10889 if (!is_ppc64_elf (ibfd))
10892 ent = ppc64_tlsld_got (ibfd);
10893 if (!ent->is_indirect
10894 && ent->got.offset != (bfd_vma) -1)
10896 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10898 if (!is_ppc64_elf (ibfd2))
10901 ent2 = ppc64_tlsld_got (ibfd2);
10902 if (!ent2->is_indirect
10903 && ent2->got.offset != (bfd_vma) -1
10904 && elf_gp (ibfd2) == elf_gp (ibfd))
10906 ent2->is_indirect = TRUE;
10907 ent2->got.ent = ent;
10913 /* Zap sizes of got sections. */
10914 htab->reliplt->rawsize = htab->reliplt->size;
10915 htab->reliplt->size -= htab->got_reli_size;
10916 htab->got_reli_size = 0;
10918 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10920 asection *got, *relgot;
10922 if (!is_ppc64_elf (ibfd))
10925 got = ppc64_elf_tdata (ibfd)->got;
10928 got->rawsize = got->size;
10930 relgot = ppc64_elf_tdata (ibfd)->relgot;
10931 relgot->rawsize = relgot->size;
10936 /* Now reallocate the got, local syms first. We don't need to
10937 allocate section contents again since we never increase size. */
10938 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10940 struct got_entry **lgot_ents;
10941 struct got_entry **end_lgot_ents;
10942 struct plt_entry **local_plt;
10943 struct plt_entry **end_local_plt;
10944 unsigned char *lgot_masks;
10945 bfd_size_type locsymcount;
10946 Elf_Internal_Shdr *symtab_hdr;
10949 if (!is_ppc64_elf (ibfd))
10952 lgot_ents = elf_local_got_ents (ibfd);
10956 symtab_hdr = &elf_symtab_hdr (ibfd);
10957 locsymcount = symtab_hdr->sh_info;
10958 end_lgot_ents = lgot_ents + locsymcount;
10959 local_plt = (struct plt_entry **) end_lgot_ents;
10960 end_local_plt = local_plt + locsymcount;
10961 lgot_masks = (unsigned char *) end_local_plt;
10962 s = ppc64_elf_tdata (ibfd)->got;
10963 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10965 struct got_entry *ent;
10967 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10969 unsigned int ent_size = 8;
10970 unsigned int rel_size = sizeof (Elf64_External_Rela);
10972 ent->got.offset = s->size;
10973 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10978 s->size += ent_size;
10979 if ((*lgot_masks & PLT_IFUNC) != 0)
10981 htab->reliplt->size += rel_size;
10982 htab->got_reli_size += rel_size;
10984 else if (info->shared)
10986 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10987 srel->size += rel_size;
10993 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10995 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10997 struct got_entry *ent;
10999 if (!is_ppc64_elf (ibfd))
11002 ent = ppc64_tlsld_got (ibfd);
11003 if (!ent->is_indirect
11004 && ent->got.offset != (bfd_vma) -1)
11006 asection *s = ppc64_elf_tdata (ibfd)->got;
11007 ent->got.offset = s->size;
11011 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11012 srel->size += sizeof (Elf64_External_Rela);
11017 done_something = htab->reliplt->rawsize != htab->reliplt->size;
11018 if (!done_something)
11019 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11023 if (!is_ppc64_elf (ibfd))
11026 got = ppc64_elf_tdata (ibfd)->got;
11029 done_something = got->rawsize != got->size;
11030 if (done_something)
11035 if (done_something)
11036 (*htab->layout_sections_again) ();
11038 /* Set up for second pass over toc sections to recalculate elf_gp
11039 on input sections. */
11040 htab->toc_bfd = NULL;
11041 htab->toc_first_sec = NULL;
11042 htab->second_toc_pass = TRUE;
11043 return done_something;
11046 /* Called after second pass of multitoc partitioning. */
11049 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11051 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11053 /* After the second pass, toc_curr tracks the TOC offset used
11054 for code sections below in ppc64_elf_next_input_section. */
11055 htab->toc_curr = TOC_BASE_OFF;
11058 /* No toc references were found in ISEC. If the code in ISEC makes no
11059 calls, then there's no need to use toc adjusting stubs when branching
11060 into ISEC. Actually, indirect calls from ISEC are OK as they will
11061 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11062 needed, and 2 if a cyclical call-graph was found but no other reason
11063 for a stub was detected. If called from the top level, a return of
11064 2 means the same as a return of 0. */
11067 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11071 /* Mark this section as checked. */
11072 isec->call_check_done = 1;
11074 /* We know none of our code bearing sections will need toc stubs. */
11075 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11078 if (isec->size == 0)
11081 if (isec->output_section == NULL)
11085 if (isec->reloc_count != 0)
11087 Elf_Internal_Rela *relstart, *rel;
11088 Elf_Internal_Sym *local_syms;
11089 struct ppc_link_hash_table *htab;
11091 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11092 info->keep_memory);
11093 if (relstart == NULL)
11096 /* Look for branches to outside of this section. */
11098 htab = ppc_hash_table (info);
11102 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11104 enum elf_ppc64_reloc_type r_type;
11105 unsigned long r_symndx;
11106 struct elf_link_hash_entry *h;
11107 struct ppc_link_hash_entry *eh;
11108 Elf_Internal_Sym *sym;
11110 struct _opd_sec_data *opd;
11114 r_type = ELF64_R_TYPE (rel->r_info);
11115 if (r_type != R_PPC64_REL24
11116 && r_type != R_PPC64_REL14
11117 && r_type != R_PPC64_REL14_BRTAKEN
11118 && r_type != R_PPC64_REL14_BRNTAKEN)
11121 r_symndx = ELF64_R_SYM (rel->r_info);
11122 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11129 /* Calls to dynamic lib functions go through a plt call stub
11131 eh = (struct ppc_link_hash_entry *) h;
11133 && (eh->elf.plt.plist != NULL
11135 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11141 if (sym_sec == NULL)
11142 /* Ignore other undefined symbols. */
11145 /* Assume branches to other sections not included in the
11146 link need stubs too, to cover -R and absolute syms. */
11147 if (sym_sec->output_section == NULL)
11154 sym_value = sym->st_value;
11157 if (h->root.type != bfd_link_hash_defined
11158 && h->root.type != bfd_link_hash_defweak)
11160 sym_value = h->root.u.def.value;
11162 sym_value += rel->r_addend;
11164 /* If this branch reloc uses an opd sym, find the code section. */
11165 opd = get_opd_info (sym_sec);
11168 if (h == NULL && opd->adjust != NULL)
11172 adjust = opd->adjust[sym->st_value / 8];
11174 /* Assume deleted functions won't ever be called. */
11176 sym_value += adjust;
11179 dest = opd_entry_value (sym_sec, sym_value,
11180 &sym_sec, NULL, FALSE);
11181 if (dest == (bfd_vma) -1)
11186 + sym_sec->output_offset
11187 + sym_sec->output_section->vma);
11189 /* Ignore branch to self. */
11190 if (sym_sec == isec)
11193 /* If the called function uses the toc, we need a stub. */
11194 if (sym_sec->has_toc_reloc
11195 || sym_sec->makes_toc_func_call)
11201 /* Assume any branch that needs a long branch stub might in fact
11202 need a plt_branch stub. A plt_branch stub uses r2. */
11203 else if (dest - (isec->output_offset
11204 + isec->output_section->vma
11205 + rel->r_offset) + (1 << 25) >= (2 << 25))
11211 /* If calling back to a section in the process of being
11212 tested, we can't say for sure that no toc adjusting stubs
11213 are needed, so don't return zero. */
11214 else if (sym_sec->call_check_in_progress)
11217 /* Branches to another section that itself doesn't have any TOC
11218 references are OK. Recursively call ourselves to check. */
11219 else if (!sym_sec->call_check_done)
11223 /* Mark current section as indeterminate, so that other
11224 sections that call back to current won't be marked as
11226 isec->call_check_in_progress = 1;
11227 recur = toc_adjusting_stub_needed (info, sym_sec);
11228 isec->call_check_in_progress = 0;
11239 if (local_syms != NULL
11240 && (elf_symtab_hdr (isec->owner).contents
11241 != (unsigned char *) local_syms))
11243 if (elf_section_data (isec)->relocs != relstart)
11248 && isec->map_head.s != NULL
11249 && (strcmp (isec->output_section->name, ".init") == 0
11250 || strcmp (isec->output_section->name, ".fini") == 0))
11252 if (isec->map_head.s->has_toc_reloc
11253 || isec->map_head.s->makes_toc_func_call)
11255 else if (!isec->map_head.s->call_check_done)
11258 isec->call_check_in_progress = 1;
11259 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11260 isec->call_check_in_progress = 0;
11267 isec->makes_toc_func_call = 1;
11272 /* The linker repeatedly calls this function for each input section,
11273 in the order that input sections are linked into output sections.
11274 Build lists of input sections to determine groupings between which
11275 we may insert linker stubs. */
11278 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11280 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11285 if ((isec->output_section->flags & SEC_CODE) != 0
11286 && isec->output_section->index <= htab->top_index)
11288 asection **list = htab->input_list + isec->output_section->index;
11289 /* Steal the link_sec pointer for our list. */
11290 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11291 /* This happens to make the list in reverse order,
11292 which is what we want. */
11293 PREV_SEC (isec) = *list;
11297 if (htab->multi_toc_needed)
11299 /* If a code section has a function that uses the TOC then we need
11300 to use the right TOC (obviously). Also, make sure that .opd gets
11301 the correct TOC value for R_PPC64_TOC relocs that don't have or
11302 can't find their function symbol (shouldn't ever happen now).
11303 Also specially treat .fixup for the linux kernel. .fixup
11304 contains branches, but only back to the function that hit an
11306 if (isec->has_toc_reloc
11307 || (isec->flags & SEC_CODE) == 0
11308 || strcmp (isec->name, ".fixup") == 0)
11310 if (elf_gp (isec->owner) != 0)
11311 htab->toc_curr = elf_gp (isec->owner);
11315 if (!isec->call_check_done
11316 && toc_adjusting_stub_needed (info, isec) < 0)
11318 /* If we make a local call from this section, ie. a branch
11319 without a following nop, then we have no place to put a
11320 toc restoring insn. We must use the same toc group as
11322 Testing makes_toc_func_call actually tests for *any*
11323 calls to functions that need a good toc pointer. A more
11324 precise test would be better, as this one will set
11325 incorrect values for pasted .init/.fini fragments.
11326 (Fixed later in check_pasted_section.) */
11327 if (isec->makes_toc_func_call
11328 && elf_gp (isec->owner) != 0)
11329 htab->toc_curr = elf_gp (isec->owner);
11333 /* Functions that don't use the TOC can belong in any TOC group.
11334 Use the last TOC base. */
11335 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11339 /* Check that all .init and .fini sections use the same toc, if they
11340 have toc relocs. */
11343 check_pasted_section (struct bfd_link_info *info, const char *name)
11345 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11349 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11350 bfd_vma toc_off = 0;
11353 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11354 if (i->has_toc_reloc)
11357 toc_off = htab->stub_group[i->id].toc_off;
11358 else if (toc_off != htab->stub_group[i->id].toc_off)
11363 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11364 if (i->makes_toc_func_call)
11366 toc_off = htab->stub_group[i->id].toc_off;
11370 /* Make sure the whole pasted function uses the same toc offset. */
11372 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11373 htab->stub_group[i->id].toc_off = toc_off;
11379 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11381 return (check_pasted_section (info, ".init")
11382 & check_pasted_section (info, ".fini"));
11385 /* See whether we can group stub sections together. Grouping stub
11386 sections may result in fewer stubs. More importantly, we need to
11387 put all .init* and .fini* stubs at the beginning of the .init or
11388 .fini output sections respectively, because glibc splits the
11389 _init and _fini functions into multiple parts. Putting a stub in
11390 the middle of a function is not a good idea. */
11393 group_sections (struct ppc_link_hash_table *htab,
11394 bfd_size_type stub_group_size,
11395 bfd_boolean stubs_always_before_branch)
11398 bfd_size_type stub14_group_size;
11399 bfd_boolean suppress_size_errors;
11401 suppress_size_errors = FALSE;
11402 stub14_group_size = stub_group_size;
11403 if (stub_group_size == 1)
11405 /* Default values. */
11406 if (stubs_always_before_branch)
11408 stub_group_size = 0x1e00000;
11409 stub14_group_size = 0x7800;
11413 stub_group_size = 0x1c00000;
11414 stub14_group_size = 0x7000;
11416 suppress_size_errors = TRUE;
11419 list = htab->input_list + htab->top_index;
11422 asection *tail = *list;
11423 while (tail != NULL)
11427 bfd_size_type total;
11428 bfd_boolean big_sec;
11432 total = tail->size;
11433 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11434 && ppc64_elf_section_data (tail)->has_14bit_branch
11435 ? stub14_group_size : stub_group_size);
11436 if (big_sec && !suppress_size_errors)
11437 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11438 tail->owner, tail);
11439 curr_toc = htab->stub_group[tail->id].toc_off;
11441 while ((prev = PREV_SEC (curr)) != NULL
11442 && ((total += curr->output_offset - prev->output_offset)
11443 < (ppc64_elf_section_data (prev) != NULL
11444 && ppc64_elf_section_data (prev)->has_14bit_branch
11445 ? stub14_group_size : stub_group_size))
11446 && htab->stub_group[prev->id].toc_off == curr_toc)
11449 /* OK, the size from the start of CURR to the end is less
11450 than stub_group_size and thus can be handled by one stub
11451 section. (or the tail section is itself larger than
11452 stub_group_size, in which case we may be toast.) We
11453 should really be keeping track of the total size of stubs
11454 added here, as stubs contribute to the final output
11455 section size. That's a little tricky, and this way will
11456 only break if stubs added make the total size more than
11457 2^25, ie. for the default stub_group_size, if stubs total
11458 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11461 prev = PREV_SEC (tail);
11462 /* Set up this stub group. */
11463 htab->stub_group[tail->id].link_sec = curr;
11465 while (tail != curr && (tail = prev) != NULL);
11467 /* But wait, there's more! Input sections up to stub_group_size
11468 bytes before the stub section can be handled by it too.
11469 Don't do this if we have a really large section after the
11470 stubs, as adding more stubs increases the chance that
11471 branches may not reach into the stub section. */
11472 if (!stubs_always_before_branch && !big_sec)
11475 while (prev != NULL
11476 && ((total += tail->output_offset - prev->output_offset)
11477 < (ppc64_elf_section_data (prev) != NULL
11478 && ppc64_elf_section_data (prev)->has_14bit_branch
11479 ? stub14_group_size : stub_group_size))
11480 && htab->stub_group[prev->id].toc_off == curr_toc)
11483 prev = PREV_SEC (tail);
11484 htab->stub_group[tail->id].link_sec = curr;
11490 while (list-- != htab->input_list);
11491 free (htab->input_list);
11495 static const unsigned char glink_eh_frame_cie[] =
11497 0, 0, 0, 16, /* length. */
11498 0, 0, 0, 0, /* id. */
11499 1, /* CIE version. */
11500 'z', 'R', 0, /* Augmentation string. */
11501 4, /* Code alignment. */
11502 0x78, /* Data alignment. */
11504 1, /* Augmentation size. */
11505 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11506 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11509 /* Stripping output sections is normally done before dynamic section
11510 symbols have been allocated. This function is called later, and
11511 handles cases like htab->brlt which is mapped to its own output
11515 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11517 if (isec->size == 0
11518 && isec->output_section->size == 0
11519 && !(isec->output_section->flags & SEC_KEEP)
11520 && !bfd_section_removed_from_list (info->output_bfd,
11521 isec->output_section)
11522 && elf_section_data (isec->output_section)->dynindx == 0)
11524 isec->output_section->flags |= SEC_EXCLUDE;
11525 bfd_section_list_remove (info->output_bfd, isec->output_section);
11526 info->output_bfd->section_count--;
11530 /* Determine and set the size of the stub section for a final link.
11532 The basic idea here is to examine all the relocations looking for
11533 PC-relative calls to a target that is unreachable with a "bl"
11537 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11538 bfd_boolean plt_static_chain, int plt_thread_safe,
11539 int plt_stub_align)
11541 bfd_size_type stub_group_size;
11542 bfd_boolean stubs_always_before_branch;
11543 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11548 htab->plt_static_chain = plt_static_chain;
11549 htab->plt_stub_align = plt_stub_align;
11550 if (plt_thread_safe == -1 && !info->executable)
11551 plt_thread_safe = 1;
11552 if (plt_thread_safe == -1)
11554 static const char *const thread_starter[] =
11558 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11560 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11561 "mq_notify", "create_timer",
11565 "GOMP_parallel_start",
11566 "GOMP_parallel_loop_static_start",
11567 "GOMP_parallel_loop_dynamic_start",
11568 "GOMP_parallel_loop_guided_start",
11569 "GOMP_parallel_loop_runtime_start",
11570 "GOMP_parallel_sections_start",
11574 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11576 struct elf_link_hash_entry *h;
11577 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11578 FALSE, FALSE, TRUE);
11579 plt_thread_safe = h != NULL && h->ref_regular;
11580 if (plt_thread_safe)
11584 htab->plt_thread_safe = plt_thread_safe;
11585 stubs_always_before_branch = group_size < 0;
11586 if (group_size < 0)
11587 stub_group_size = -group_size;
11589 stub_group_size = group_size;
11591 group_sections (htab, stub_group_size, stubs_always_before_branch);
11596 unsigned int bfd_indx;
11597 asection *stub_sec;
11599 htab->stub_iteration += 1;
11601 for (input_bfd = info->input_bfds, bfd_indx = 0;
11603 input_bfd = input_bfd->link_next, bfd_indx++)
11605 Elf_Internal_Shdr *symtab_hdr;
11607 Elf_Internal_Sym *local_syms = NULL;
11609 if (!is_ppc64_elf (input_bfd))
11612 /* We'll need the symbol table in a second. */
11613 symtab_hdr = &elf_symtab_hdr (input_bfd);
11614 if (symtab_hdr->sh_info == 0)
11617 /* Walk over each section attached to the input bfd. */
11618 for (section = input_bfd->sections;
11620 section = section->next)
11622 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11624 /* If there aren't any relocs, then there's nothing more
11626 if ((section->flags & SEC_RELOC) == 0
11627 || (section->flags & SEC_ALLOC) == 0
11628 || (section->flags & SEC_LOAD) == 0
11629 || (section->flags & SEC_CODE) == 0
11630 || section->reloc_count == 0)
11633 /* If this section is a link-once section that will be
11634 discarded, then don't create any stubs. */
11635 if (section->output_section == NULL
11636 || section->output_section->owner != info->output_bfd)
11639 /* Get the relocs. */
11641 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11642 info->keep_memory);
11643 if (internal_relocs == NULL)
11644 goto error_ret_free_local;
11646 /* Now examine each relocation. */
11647 irela = internal_relocs;
11648 irelaend = irela + section->reloc_count;
11649 for (; irela < irelaend; irela++)
11651 enum elf_ppc64_reloc_type r_type;
11652 unsigned int r_indx;
11653 enum ppc_stub_type stub_type;
11654 struct ppc_stub_hash_entry *stub_entry;
11655 asection *sym_sec, *code_sec;
11656 bfd_vma sym_value, code_value;
11657 bfd_vma destination;
11658 bfd_boolean ok_dest;
11659 struct ppc_link_hash_entry *hash;
11660 struct ppc_link_hash_entry *fdh;
11661 struct elf_link_hash_entry *h;
11662 Elf_Internal_Sym *sym;
11664 const asection *id_sec;
11665 struct _opd_sec_data *opd;
11666 struct plt_entry *plt_ent;
11668 r_type = ELF64_R_TYPE (irela->r_info);
11669 r_indx = ELF64_R_SYM (irela->r_info);
11671 if (r_type >= R_PPC64_max)
11673 bfd_set_error (bfd_error_bad_value);
11674 goto error_ret_free_internal;
11677 /* Only look for stubs on branch instructions. */
11678 if (r_type != R_PPC64_REL24
11679 && r_type != R_PPC64_REL14
11680 && r_type != R_PPC64_REL14_BRTAKEN
11681 && r_type != R_PPC64_REL14_BRNTAKEN)
11684 /* Now determine the call target, its name, value,
11686 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11687 r_indx, input_bfd))
11688 goto error_ret_free_internal;
11689 hash = (struct ppc_link_hash_entry *) h;
11696 sym_value = sym->st_value;
11699 else if (hash->elf.root.type == bfd_link_hash_defined
11700 || hash->elf.root.type == bfd_link_hash_defweak)
11702 sym_value = hash->elf.root.u.def.value;
11703 if (sym_sec->output_section != NULL)
11706 else if (hash->elf.root.type == bfd_link_hash_undefweak
11707 || hash->elf.root.type == bfd_link_hash_undefined)
11709 /* Recognise an old ABI func code entry sym, and
11710 use the func descriptor sym instead if it is
11712 if (hash->elf.root.root.string[0] == '.'
11713 && (fdh = lookup_fdh (hash, htab)) != NULL)
11715 if (fdh->elf.root.type == bfd_link_hash_defined
11716 || fdh->elf.root.type == bfd_link_hash_defweak)
11718 sym_sec = fdh->elf.root.u.def.section;
11719 sym_value = fdh->elf.root.u.def.value;
11720 if (sym_sec->output_section != NULL)
11729 bfd_set_error (bfd_error_bad_value);
11730 goto error_ret_free_internal;
11736 sym_value += irela->r_addend;
11737 destination = (sym_value
11738 + sym_sec->output_offset
11739 + sym_sec->output_section->vma);
11742 code_sec = sym_sec;
11743 code_value = sym_value;
11744 opd = get_opd_info (sym_sec);
11749 if (hash == NULL && opd->adjust != NULL)
11751 long adjust = opd->adjust[sym_value / 8];
11754 code_value += adjust;
11755 sym_value += adjust;
11757 dest = opd_entry_value (sym_sec, sym_value,
11758 &code_sec, &code_value, FALSE);
11759 if (dest != (bfd_vma) -1)
11761 destination = dest;
11764 /* Fixup old ABI sym to point at code
11766 hash->elf.root.type = bfd_link_hash_defweak;
11767 hash->elf.root.u.def.section = code_sec;
11768 hash->elf.root.u.def.value = code_value;
11773 /* Determine what (if any) linker stub is needed. */
11775 stub_type = ppc_type_of_stub (section, irela, &hash,
11776 &plt_ent, destination);
11778 if (stub_type != ppc_stub_plt_call)
11780 /* Check whether we need a TOC adjusting stub.
11781 Since the linker pastes together pieces from
11782 different object files when creating the
11783 _init and _fini functions, it may be that a
11784 call to what looks like a local sym is in
11785 fact a call needing a TOC adjustment. */
11786 if (code_sec != NULL
11787 && code_sec->output_section != NULL
11788 && (htab->stub_group[code_sec->id].toc_off
11789 != htab->stub_group[section->id].toc_off)
11790 && (code_sec->has_toc_reloc
11791 || code_sec->makes_toc_func_call))
11792 stub_type = ppc_stub_long_branch_r2off;
11795 if (stub_type == ppc_stub_none)
11798 /* __tls_get_addr calls might be eliminated. */
11799 if (stub_type != ppc_stub_plt_call
11801 && (hash == htab->tls_get_addr
11802 || hash == htab->tls_get_addr_fd)
11803 && section->has_tls_reloc
11804 && irela != internal_relocs)
11806 /* Get tls info. */
11807 unsigned char *tls_mask;
11809 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11810 irela - 1, input_bfd))
11811 goto error_ret_free_internal;
11812 if (*tls_mask != 0)
11816 if (stub_type == ppc_stub_plt_call
11817 && irela + 1 < irelaend
11818 && irela[1].r_offset == irela->r_offset + 4
11819 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
11821 if (!tocsave_find (htab, INSERT,
11822 &local_syms, irela + 1, input_bfd))
11823 goto error_ret_free_internal;
11825 else if (stub_type == ppc_stub_plt_call)
11826 stub_type = ppc_stub_plt_call_r2save;
11828 /* Support for grouping stub sections. */
11829 id_sec = htab->stub_group[section->id].link_sec;
11831 /* Get the name of this stub. */
11832 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11834 goto error_ret_free_internal;
11836 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11837 stub_name, FALSE, FALSE);
11838 if (stub_entry != NULL)
11840 /* The proper stub has already been created. */
11842 if (stub_type == ppc_stub_plt_call_r2save)
11843 stub_entry->stub_type = stub_type;
11847 stub_entry = ppc_add_stub (stub_name, section, info);
11848 if (stub_entry == NULL)
11851 error_ret_free_internal:
11852 if (elf_section_data (section)->relocs == NULL)
11853 free (internal_relocs);
11854 error_ret_free_local:
11855 if (local_syms != NULL
11856 && (symtab_hdr->contents
11857 != (unsigned char *) local_syms))
11862 stub_entry->stub_type = stub_type;
11863 if (stub_type != ppc_stub_plt_call
11864 && stub_type != ppc_stub_plt_call_r2save)
11866 stub_entry->target_value = code_value;
11867 stub_entry->target_section = code_sec;
11871 stub_entry->target_value = sym_value;
11872 stub_entry->target_section = sym_sec;
11874 stub_entry->h = hash;
11875 stub_entry->plt_ent = plt_ent;
11877 if (stub_entry->h != NULL)
11878 htab->stub_globals += 1;
11881 /* We're done with the internal relocs, free them. */
11882 if (elf_section_data (section)->relocs != internal_relocs)
11883 free (internal_relocs);
11886 if (local_syms != NULL
11887 && symtab_hdr->contents != (unsigned char *) local_syms)
11889 if (!info->keep_memory)
11892 symtab_hdr->contents = (unsigned char *) local_syms;
11896 /* We may have added some stubs. Find out the new size of the
11898 for (stub_sec = htab->stub_bfd->sections;
11900 stub_sec = stub_sec->next)
11901 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11903 stub_sec->rawsize = stub_sec->size;
11904 stub_sec->size = 0;
11905 stub_sec->reloc_count = 0;
11906 stub_sec->flags &= ~SEC_RELOC;
11909 htab->brlt->size = 0;
11910 htab->brlt->reloc_count = 0;
11911 htab->brlt->flags &= ~SEC_RELOC;
11912 if (htab->relbrlt != NULL)
11913 htab->relbrlt->size = 0;
11915 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11917 if (info->emitrelocations
11918 && htab->glink != NULL && htab->glink->size != 0)
11920 htab->glink->reloc_count = 1;
11921 htab->glink->flags |= SEC_RELOC;
11924 if (htab->glink_eh_frame != NULL
11925 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
11926 && htab->glink_eh_frame->output_section->size != 0)
11928 size_t size = 0, align;
11930 for (stub_sec = htab->stub_bfd->sections;
11932 stub_sec = stub_sec->next)
11933 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11935 if (htab->glink != NULL && htab->glink->size != 0)
11938 size += sizeof (glink_eh_frame_cie);
11940 align <<= htab->glink_eh_frame->output_section->alignment_power;
11942 size = (size + align) & ~align;
11943 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11944 htab->glink_eh_frame->size = size;
11947 if (htab->plt_stub_align != 0)
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 = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
11953 & (-1 << htab->plt_stub_align));
11955 for (stub_sec = htab->stub_bfd->sections;
11957 stub_sec = stub_sec->next)
11958 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11959 && stub_sec->rawsize != stub_sec->size)
11962 /* Exit from this loop when no stubs have been added, and no stubs
11963 have changed size. */
11964 if (stub_sec == NULL
11965 && (htab->glink_eh_frame == NULL
11966 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
11969 /* Ask the linker to do its stuff. */
11970 (*htab->layout_sections_again) ();
11973 maybe_strip_output (info, htab->brlt);
11974 if (htab->glink_eh_frame != NULL)
11975 maybe_strip_output (info, htab->glink_eh_frame);
11980 /* Called after we have determined section placement. If sections
11981 move, we'll be called again. Provide a value for TOCstart. */
11984 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
11989 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11990 order. The TOC starts where the first of these sections starts. */
11991 s = bfd_get_section_by_name (obfd, ".got");
11992 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11993 s = bfd_get_section_by_name (obfd, ".toc");
11994 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11995 s = bfd_get_section_by_name (obfd, ".tocbss");
11996 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11997 s = bfd_get_section_by_name (obfd, ".plt");
11998 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12000 /* This may happen for
12001 o references to TOC base (SYM@toc / TOC[tc0]) without a
12003 o bad linker script
12004 o --gc-sections and empty TOC sections
12006 FIXME: Warn user? */
12008 /* Look for a likely section. We probably won't even be
12010 for (s = obfd->sections; s != NULL; s = s->next)
12011 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12013 == (SEC_ALLOC | SEC_SMALL_DATA))
12016 for (s = obfd->sections; s != NULL; s = s->next)
12017 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12018 == (SEC_ALLOC | SEC_SMALL_DATA))
12021 for (s = obfd->sections; s != NULL; s = s->next)
12022 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12026 for (s = obfd->sections; s != NULL; s = s->next)
12027 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12033 TOCstart = s->output_section->vma + s->output_offset;
12035 _bfd_set_gp_value (obfd, TOCstart);
12037 if (info != NULL && s != NULL && is_ppc64_elf (obfd))
12039 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12042 && htab->elf.hgot != NULL)
12044 htab->elf.hgot->type = STT_OBJECT;
12045 htab->elf.hgot->root.type = bfd_link_hash_defined;
12046 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12047 htab->elf.hgot->root.u.def.section = s;
12053 /* Build all the stubs associated with the current output file.
12054 The stubs are kept in a hash table attached to the main linker
12055 hash table. This function is called via gldelf64ppc_finish. */
12058 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
12059 struct bfd_link_info *info,
12062 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12063 asection *stub_sec;
12065 int stub_sec_count = 0;
12070 htab->emit_stub_syms = emit_stub_syms;
12072 /* Allocate memory to hold the linker stubs. */
12073 for (stub_sec = htab->stub_bfd->sections;
12075 stub_sec = stub_sec->next)
12076 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12077 && stub_sec->size != 0)
12079 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
12080 if (stub_sec->contents == NULL)
12082 /* We want to check that built size is the same as calculated
12083 size. rawsize is a convenient location to use. */
12084 stub_sec->rawsize = stub_sec->size;
12085 stub_sec->size = 0;
12088 if (htab->glink != NULL && htab->glink->size != 0)
12093 /* Build the .glink plt call stub. */
12094 if (htab->emit_stub_syms)
12096 struct elf_link_hash_entry *h;
12097 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12098 TRUE, FALSE, FALSE);
12101 if (h->root.type == bfd_link_hash_new)
12103 h->root.type = bfd_link_hash_defined;
12104 h->root.u.def.section = htab->glink;
12105 h->root.u.def.value = 8;
12106 h->ref_regular = 1;
12107 h->def_regular = 1;
12108 h->ref_regular_nonweak = 1;
12109 h->forced_local = 1;
12113 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
12114 if (info->emitrelocations)
12116 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12119 r->r_offset = (htab->glink->output_offset
12120 + htab->glink->output_section->vma);
12121 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12122 r->r_addend = plt0;
12124 p = htab->glink->contents;
12125 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12126 bfd_put_64 (htab->glink->owner, plt0, p);
12128 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12130 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12132 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12134 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12136 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12138 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12140 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12142 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12144 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12146 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12148 bfd_put_32 (htab->glink->owner, BCTR, p);
12150 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12152 bfd_put_32 (htab->glink->owner, NOP, p);
12156 /* Build the .glink lazy link call stubs. */
12158 while (p < htab->glink->contents + htab->glink->size)
12162 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12167 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12169 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
12172 bfd_put_32 (htab->glink->owner,
12173 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12177 htab->glink->rawsize = p - htab->glink->contents;
12180 if (htab->brlt->size != 0)
12182 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12184 if (htab->brlt->contents == NULL)
12187 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12189 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12190 htab->relbrlt->size);
12191 if (htab->relbrlt->contents == NULL)
12195 if (htab->glink_eh_frame != NULL
12196 && htab->glink_eh_frame->size != 0)
12199 bfd_byte *last_fde;
12200 size_t last_fde_len, size, align, pad;
12202 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12205 htab->glink_eh_frame->contents = p;
12208 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12210 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12211 /* CIE length (rewrite in case little-endian). */
12212 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12213 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12214 p += sizeof (glink_eh_frame_cie);
12216 for (stub_sec = htab->stub_bfd->sections;
12218 stub_sec = stub_sec->next)
12219 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12224 bfd_put_32 (htab->elf.dynobj, 16, p);
12227 val = p - htab->glink_eh_frame->contents;
12228 bfd_put_32 (htab->elf.dynobj, val, p);
12230 /* Offset to stub section. */
12231 val = (stub_sec->output_section->vma
12232 + stub_sec->output_offset);
12233 val -= (htab->glink_eh_frame->output_section->vma
12234 + htab->glink_eh_frame->output_offset);
12235 val -= p - htab->glink_eh_frame->contents;
12236 if (val + 0x80000000 > 0xffffffff)
12238 info->callbacks->einfo
12239 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12243 bfd_put_32 (htab->elf.dynobj, val, p);
12245 /* stub section size. */
12246 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12248 /* Augmentation. */
12253 if (htab->glink != NULL && htab->glink->size != 0)
12258 bfd_put_32 (htab->elf.dynobj, 20, p);
12261 val = p - htab->glink_eh_frame->contents;
12262 bfd_put_32 (htab->elf.dynobj, val, p);
12264 /* Offset to .glink. */
12265 val = (htab->glink->output_section->vma
12266 + htab->glink->output_offset
12268 val -= (htab->glink_eh_frame->output_section->vma
12269 + htab->glink_eh_frame->output_offset);
12270 val -= p - htab->glink_eh_frame->contents;
12271 if (val + 0x80000000 > 0xffffffff)
12273 info->callbacks->einfo
12274 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12275 htab->glink->name);
12278 bfd_put_32 (htab->elf.dynobj, val, p);
12281 bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
12283 /* Augmentation. */
12286 *p++ = DW_CFA_advance_loc + 1;
12287 *p++ = DW_CFA_register;
12290 *p++ = DW_CFA_advance_loc + 4;
12291 *p++ = DW_CFA_restore_extended;
12294 /* Subsume any padding into the last FDE if user .eh_frame
12295 sections are aligned more than glink_eh_frame. Otherwise any
12296 zero padding will be seen as a terminator. */
12297 size = p - htab->glink_eh_frame->contents;
12299 align <<= htab->glink_eh_frame->output_section->alignment_power;
12301 pad = ((size + align) & ~align) - size;
12302 htab->glink_eh_frame->size = size + pad;
12303 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12306 /* Build the stubs as directed by the stub hash table. */
12307 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12309 if (htab->relbrlt != NULL)
12310 htab->relbrlt->reloc_count = 0;
12312 if (htab->plt_stub_align != 0)
12313 for (stub_sec = htab->stub_bfd->sections;
12315 stub_sec = stub_sec->next)
12316 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12317 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12318 & (-1 << htab->plt_stub_align));
12320 for (stub_sec = htab->stub_bfd->sections;
12322 stub_sec = stub_sec->next)
12323 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12325 stub_sec_count += 1;
12326 if (stub_sec->rawsize != stub_sec->size)
12330 if (stub_sec != NULL
12331 || htab->glink->rawsize != htab->glink->size
12332 || (htab->glink_eh_frame != NULL
12333 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12335 htab->stub_error = TRUE;
12336 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12339 if (htab->stub_error)
12344 *stats = bfd_malloc (500);
12345 if (*stats == NULL)
12348 sprintf (*stats, _("linker stubs in %u group%s\n"
12350 " toc adjust %lu\n"
12351 " long branch %lu\n"
12352 " long toc adj %lu\n"
12354 " plt call toc %lu"),
12356 stub_sec_count == 1 ? "" : "s",
12357 htab->stub_count[ppc_stub_long_branch - 1],
12358 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12359 htab->stub_count[ppc_stub_plt_branch - 1],
12360 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12361 htab->stub_count[ppc_stub_plt_call - 1],
12362 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12367 /* This function undoes the changes made by add_symbol_adjust. */
12370 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12372 struct ppc_link_hash_entry *eh;
12374 if (h->root.type == bfd_link_hash_indirect)
12377 eh = (struct ppc_link_hash_entry *) h;
12378 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12381 eh->elf.root.type = bfd_link_hash_undefined;
12386 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12388 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12391 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12394 /* What to do when ld finds relocations against symbols defined in
12395 discarded sections. */
12397 static unsigned int
12398 ppc64_elf_action_discarded (asection *sec)
12400 if (strcmp (".opd", sec->name) == 0)
12403 if (strcmp (".toc", sec->name) == 0)
12406 if (strcmp (".toc1", sec->name) == 0)
12409 return _bfd_elf_default_action_discarded (sec);
12412 /* The RELOCATE_SECTION function is called by the ELF backend linker
12413 to handle the relocations for a section.
12415 The relocs are always passed as Rela structures; if the section
12416 actually uses Rel structures, the r_addend field will always be
12419 This function is responsible for adjust the section contents as
12420 necessary, and (if using Rela relocs and generating a
12421 relocatable output file) adjusting the reloc addend as
12424 This function does not have to worry about setting the reloc
12425 address or the reloc symbol index.
12427 LOCAL_SYMS is a pointer to the swapped in local symbols.
12429 LOCAL_SECTIONS is an array giving the section in the input file
12430 corresponding to the st_shndx field of each local symbol.
12432 The global hash table entry for the global symbols can be found
12433 via elf_sym_hashes (input_bfd).
12435 When generating relocatable output, this function must handle
12436 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12437 going to be the section symbol corresponding to the output
12438 section, which means that the addend must be adjusted
12442 ppc64_elf_relocate_section (bfd *output_bfd,
12443 struct bfd_link_info *info,
12445 asection *input_section,
12446 bfd_byte *contents,
12447 Elf_Internal_Rela *relocs,
12448 Elf_Internal_Sym *local_syms,
12449 asection **local_sections)
12451 struct ppc_link_hash_table *htab;
12452 Elf_Internal_Shdr *symtab_hdr;
12453 struct elf_link_hash_entry **sym_hashes;
12454 Elf_Internal_Rela *rel;
12455 Elf_Internal_Rela *relend;
12456 Elf_Internal_Rela outrel;
12458 struct got_entry **local_got_ents;
12460 bfd_boolean ret = TRUE;
12461 bfd_boolean is_opd;
12462 /* Assume 'at' branch hints. */
12463 bfd_boolean is_isa_v2 = TRUE;
12464 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12466 /* Initialize howto table if needed. */
12467 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12470 htab = ppc_hash_table (info);
12474 /* Don't relocate stub sections. */
12475 if (input_section->owner == htab->stub_bfd)
12478 BFD_ASSERT (is_ppc64_elf (input_bfd));
12480 local_got_ents = elf_local_got_ents (input_bfd);
12481 TOCstart = elf_gp (output_bfd);
12482 symtab_hdr = &elf_symtab_hdr (input_bfd);
12483 sym_hashes = elf_sym_hashes (input_bfd);
12484 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12487 relend = relocs + input_section->reloc_count;
12488 for (; rel < relend; rel++)
12490 enum elf_ppc64_reloc_type r_type;
12492 bfd_reloc_status_type r;
12493 Elf_Internal_Sym *sym;
12495 struct elf_link_hash_entry *h_elf;
12496 struct ppc_link_hash_entry *h;
12497 struct ppc_link_hash_entry *fdh;
12498 const char *sym_name;
12499 unsigned long r_symndx, toc_symndx;
12500 bfd_vma toc_addend;
12501 unsigned char tls_mask, tls_gd, tls_type;
12502 unsigned char sym_type;
12503 bfd_vma relocation;
12504 bfd_boolean unresolved_reloc;
12505 bfd_boolean warned;
12506 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
12509 struct ppc_stub_hash_entry *stub_entry;
12510 bfd_vma max_br_offset;
12512 const Elf_Internal_Rela orig_rel = *rel;
12514 r_type = ELF64_R_TYPE (rel->r_info);
12515 r_symndx = ELF64_R_SYM (rel->r_info);
12517 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12518 symbol of the previous ADDR64 reloc. The symbol gives us the
12519 proper TOC base to use. */
12520 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12522 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12524 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12530 unresolved_reloc = FALSE;
12533 if (r_symndx < symtab_hdr->sh_info)
12535 /* It's a local symbol. */
12536 struct _opd_sec_data *opd;
12538 sym = local_syms + r_symndx;
12539 sec = local_sections[r_symndx];
12540 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12541 sym_type = ELF64_ST_TYPE (sym->st_info);
12542 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12543 opd = get_opd_info (sec);
12544 if (opd != NULL && opd->adjust != NULL)
12546 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12551 /* If this is a relocation against the opd section sym
12552 and we have edited .opd, adjust the reloc addend so
12553 that ld -r and ld --emit-relocs output is correct.
12554 If it is a reloc against some other .opd symbol,
12555 then the symbol value will be adjusted later. */
12556 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12557 rel->r_addend += adjust;
12559 relocation += adjust;
12565 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12566 r_symndx, symtab_hdr, sym_hashes,
12567 h_elf, sec, relocation,
12568 unresolved_reloc, warned);
12569 sym_name = h_elf->root.root.string;
12570 sym_type = h_elf->type;
12572 && sec->owner == output_bfd
12573 && strcmp (sec->name, ".opd") == 0)
12575 /* This is a symbol defined in a linker script. All
12576 such are defined in output sections, even those
12577 defined by simple assignment from a symbol defined in
12578 an input section. Transfer the symbol to an
12579 appropriate input .opd section, so that a branch to
12580 this symbol will be mapped to the location specified
12581 by the opd entry. */
12582 struct bfd_link_order *lo;
12583 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
12584 if (lo->type == bfd_indirect_link_order)
12586 asection *isec = lo->u.indirect.section;
12587 if (h_elf->root.u.def.value >= isec->output_offset
12588 && h_elf->root.u.def.value < (isec->output_offset
12591 h_elf->root.u.def.value -= isec->output_offset;
12592 h_elf->root.u.def.section = isec;
12599 h = (struct ppc_link_hash_entry *) h_elf;
12601 if (sec != NULL && discarded_section (sec))
12602 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
12604 ppc64_elf_howto_table[r_type], 0,
12607 if (info->relocatable)
12610 if (h != NULL && &h->elf == htab->elf.hgot)
12612 relocation = (TOCstart
12613 + htab->stub_group[input_section->id].toc_off);
12614 sec = bfd_abs_section_ptr;
12615 unresolved_reloc = FALSE;
12618 /* TLS optimizations. Replace instruction sequences and relocs
12619 based on information we collected in tls_optimize. We edit
12620 RELOCS so that --emit-relocs will output something sensible
12621 for the final instruction stream. */
12626 tls_mask = h->tls_mask;
12627 else if (local_got_ents != NULL)
12629 struct plt_entry **local_plt = (struct plt_entry **)
12630 (local_got_ents + symtab_hdr->sh_info);
12631 unsigned char *lgot_masks = (unsigned char *)
12632 (local_plt + symtab_hdr->sh_info);
12633 tls_mask = lgot_masks[r_symndx];
12636 && (r_type == R_PPC64_TLS
12637 || r_type == R_PPC64_TLSGD
12638 || r_type == R_PPC64_TLSLD))
12640 /* Check for toc tls entries. */
12641 unsigned char *toc_tls;
12643 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12644 &local_syms, rel, input_bfd))
12648 tls_mask = *toc_tls;
12651 /* Check that tls relocs are used with tls syms, and non-tls
12652 relocs are used with non-tls syms. */
12653 if (r_symndx != STN_UNDEF
12654 && r_type != R_PPC64_NONE
12656 || h->elf.root.type == bfd_link_hash_defined
12657 || h->elf.root.type == bfd_link_hash_defweak)
12658 && (IS_PPC64_TLS_RELOC (r_type)
12659 != (sym_type == STT_TLS
12660 || (sym_type == STT_SECTION
12661 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
12664 && (r_type == R_PPC64_TLS
12665 || r_type == R_PPC64_TLSGD
12666 || r_type == R_PPC64_TLSLD))
12667 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12670 info->callbacks->einfo
12671 (!IS_PPC64_TLS_RELOC (r_type)
12672 ? _("%P: %H: %s used with TLS symbol `%T'\n")
12673 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
12674 input_bfd, input_section, rel->r_offset,
12675 ppc64_elf_howto_table[r_type]->name,
12679 /* Ensure reloc mapping code below stays sane. */
12680 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
12681 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
12682 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
12683 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
12684 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
12685 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
12686 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
12687 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
12688 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
12689 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
12697 case R_PPC64_LO_DS_OPT:
12698 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12699 if ((insn & (0x3f << 26)) != 58u << 26)
12701 insn += (14u << 26) - (58u << 26);
12702 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12703 r_type = R_PPC64_TOC16_LO;
12704 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12707 case R_PPC64_TOC16:
12708 case R_PPC64_TOC16_LO:
12709 case R_PPC64_TOC16_DS:
12710 case R_PPC64_TOC16_LO_DS:
12712 /* Check for toc tls entries. */
12713 unsigned char *toc_tls;
12716 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12717 &local_syms, rel, input_bfd);
12723 tls_mask = *toc_tls;
12724 if (r_type == R_PPC64_TOC16_DS
12725 || r_type == R_PPC64_TOC16_LO_DS)
12728 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
12733 /* If we found a GD reloc pair, then we might be
12734 doing a GD->IE transition. */
12737 tls_gd = TLS_TPRELGD;
12738 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12741 else if (retval == 3)
12743 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12751 case R_PPC64_GOT_TPREL16_HI:
12752 case R_PPC64_GOT_TPREL16_HA:
12754 && (tls_mask & TLS_TPREL) == 0)
12756 rel->r_offset -= d_offset;
12757 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12758 r_type = R_PPC64_NONE;
12759 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12763 case R_PPC64_GOT_TPREL16_DS:
12764 case R_PPC64_GOT_TPREL16_LO_DS:
12766 && (tls_mask & TLS_TPREL) == 0)
12769 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12771 insn |= 0x3c0d0000; /* addis 0,13,0 */
12772 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12773 r_type = R_PPC64_TPREL16_HA;
12774 if (toc_symndx != 0)
12776 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12777 rel->r_addend = toc_addend;
12778 /* We changed the symbol. Start over in order to
12779 get h, sym, sec etc. right. */
12784 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12790 && (tls_mask & TLS_TPREL) == 0)
12792 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
12793 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
12796 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12797 /* Was PPC64_TLS which sits on insn boundary, now
12798 PPC64_TPREL16_LO which is at low-order half-word. */
12799 rel->r_offset += d_offset;
12800 r_type = R_PPC64_TPREL16_LO;
12801 if (toc_symndx != 0)
12803 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12804 rel->r_addend = toc_addend;
12805 /* We changed the symbol. Start over in order to
12806 get h, sym, sec etc. right. */
12811 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12815 case R_PPC64_GOT_TLSGD16_HI:
12816 case R_PPC64_GOT_TLSGD16_HA:
12817 tls_gd = TLS_TPRELGD;
12818 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12822 case R_PPC64_GOT_TLSLD16_HI:
12823 case R_PPC64_GOT_TLSLD16_HA:
12824 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12827 if ((tls_mask & tls_gd) != 0)
12828 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12829 + R_PPC64_GOT_TPREL16_DS);
12832 rel->r_offset -= d_offset;
12833 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12834 r_type = R_PPC64_NONE;
12836 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12840 case R_PPC64_GOT_TLSGD16:
12841 case R_PPC64_GOT_TLSGD16_LO:
12842 tls_gd = TLS_TPRELGD;
12843 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12847 case R_PPC64_GOT_TLSLD16:
12848 case R_PPC64_GOT_TLSLD16_LO:
12849 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12851 unsigned int insn1, insn2, insn3;
12855 offset = (bfd_vma) -1;
12856 /* If not using the newer R_PPC64_TLSGD/LD to mark
12857 __tls_get_addr calls, we must trust that the call
12858 stays with its arg setup insns, ie. that the next
12859 reloc is the __tls_get_addr call associated with
12860 the current reloc. Edit both insns. */
12861 if (input_section->has_tls_get_addr_call
12862 && rel + 1 < relend
12863 && branch_reloc_hash_match (input_bfd, rel + 1,
12864 htab->tls_get_addr,
12865 htab->tls_get_addr_fd))
12866 offset = rel[1].r_offset;
12867 if ((tls_mask & tls_gd) != 0)
12870 insn1 = bfd_get_32 (output_bfd,
12871 contents + rel->r_offset - d_offset);
12872 insn1 &= (1 << 26) - (1 << 2);
12873 insn1 |= 58 << 26; /* ld */
12874 insn2 = 0x7c636a14; /* add 3,3,13 */
12875 if (offset != (bfd_vma) -1)
12876 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12877 if ((tls_mask & TLS_EXPLICIT) == 0)
12878 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12879 + R_PPC64_GOT_TPREL16_DS);
12881 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12882 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12887 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12888 insn2 = 0x38630000; /* addi 3,3,0 */
12891 /* Was an LD reloc. */
12893 sec = local_sections[toc_symndx];
12895 r_symndx < symtab_hdr->sh_info;
12897 if (local_sections[r_symndx] == sec)
12899 if (r_symndx >= symtab_hdr->sh_info)
12900 r_symndx = STN_UNDEF;
12901 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12902 if (r_symndx != STN_UNDEF)
12903 rel->r_addend -= (local_syms[r_symndx].st_value
12904 + sec->output_offset
12905 + sec->output_section->vma);
12907 else if (toc_symndx != 0)
12909 r_symndx = toc_symndx;
12910 rel->r_addend = toc_addend;
12912 r_type = R_PPC64_TPREL16_HA;
12913 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12914 if (offset != (bfd_vma) -1)
12916 rel[1].r_info = ELF64_R_INFO (r_symndx,
12917 R_PPC64_TPREL16_LO);
12918 rel[1].r_offset = offset + d_offset;
12919 rel[1].r_addend = rel->r_addend;
12922 bfd_put_32 (output_bfd, insn1,
12923 contents + rel->r_offset - d_offset);
12924 if (offset != (bfd_vma) -1)
12926 insn3 = bfd_get_32 (output_bfd,
12927 contents + offset + 4);
12929 || insn3 == CROR_151515 || insn3 == CROR_313131)
12931 rel[1].r_offset += 4;
12932 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12935 bfd_put_32 (output_bfd, insn2, contents + offset);
12937 if ((tls_mask & tls_gd) == 0
12938 && (tls_gd == 0 || toc_symndx != 0))
12940 /* We changed the symbol. Start over in order
12941 to get h, sym, sec etc. right. */
12948 case R_PPC64_TLSGD:
12949 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12951 unsigned int insn2, insn3;
12952 bfd_vma offset = rel->r_offset;
12954 if ((tls_mask & TLS_TPRELGD) != 0)
12957 r_type = R_PPC64_NONE;
12958 insn2 = 0x7c636a14; /* add 3,3,13 */
12963 if (toc_symndx != 0)
12965 r_symndx = toc_symndx;
12966 rel->r_addend = toc_addend;
12968 r_type = R_PPC64_TPREL16_LO;
12969 rel->r_offset = offset + d_offset;
12970 insn2 = 0x38630000; /* addi 3,3,0 */
12972 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12973 /* Zap the reloc on the _tls_get_addr call too. */
12974 BFD_ASSERT (offset == rel[1].r_offset);
12975 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12976 insn3 = bfd_get_32 (output_bfd,
12977 contents + offset + 4);
12979 || insn3 == CROR_151515 || insn3 == CROR_313131)
12981 rel->r_offset += 4;
12982 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12985 bfd_put_32 (output_bfd, insn2, contents + offset);
12986 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12994 case R_PPC64_TLSLD:
12995 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12997 unsigned int insn2, insn3;
12998 bfd_vma offset = rel->r_offset;
13001 sec = local_sections[toc_symndx];
13003 r_symndx < symtab_hdr->sh_info;
13005 if (local_sections[r_symndx] == sec)
13007 if (r_symndx >= symtab_hdr->sh_info)
13008 r_symndx = STN_UNDEF;
13009 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13010 if (r_symndx != STN_UNDEF)
13011 rel->r_addend -= (local_syms[r_symndx].st_value
13012 + sec->output_offset
13013 + sec->output_section->vma);
13015 r_type = R_PPC64_TPREL16_LO;
13016 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13017 rel->r_offset = offset + d_offset;
13018 /* Zap the reloc on the _tls_get_addr call too. */
13019 BFD_ASSERT (offset == rel[1].r_offset);
13020 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13021 insn2 = 0x38630000; /* addi 3,3,0 */
13022 insn3 = bfd_get_32 (output_bfd,
13023 contents + offset + 4);
13025 || insn3 == CROR_151515 || insn3 == CROR_313131)
13027 rel->r_offset += 4;
13028 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13031 bfd_put_32 (output_bfd, insn2, contents + offset);
13037 case R_PPC64_DTPMOD64:
13038 if (rel + 1 < relend
13039 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13040 && rel[1].r_offset == rel->r_offset + 8)
13042 if ((tls_mask & TLS_GD) == 0)
13044 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13045 if ((tls_mask & TLS_TPRELGD) != 0)
13046 r_type = R_PPC64_TPREL64;
13049 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13050 r_type = R_PPC64_NONE;
13052 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13057 if ((tls_mask & TLS_LD) == 0)
13059 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13060 r_type = R_PPC64_NONE;
13061 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13066 case R_PPC64_TPREL64:
13067 if ((tls_mask & TLS_TPREL) == 0)
13069 r_type = R_PPC64_NONE;
13070 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13075 /* Handle other relocations that tweak non-addend part of insn. */
13077 max_br_offset = 1 << 25;
13078 addend = rel->r_addend;
13079 reloc_dest = DEST_NORMAL;
13085 case R_PPC64_TOCSAVE:
13086 if (relocation + addend == (rel->r_offset
13087 + input_section->output_offset
13088 + input_section->output_section->vma)
13089 && tocsave_find (htab, NO_INSERT,
13090 &local_syms, rel, input_bfd))
13092 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13094 || insn == CROR_151515 || insn == CROR_313131)
13095 bfd_put_32 (input_bfd, STD_R2_40R1,
13096 contents + rel->r_offset);
13100 /* Branch taken prediction relocations. */
13101 case R_PPC64_ADDR14_BRTAKEN:
13102 case R_PPC64_REL14_BRTAKEN:
13103 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13106 /* Branch not taken prediction relocations. */
13107 case R_PPC64_ADDR14_BRNTAKEN:
13108 case R_PPC64_REL14_BRNTAKEN:
13109 insn |= bfd_get_32 (output_bfd,
13110 contents + rel->r_offset) & ~(0x01 << 21);
13113 case R_PPC64_REL14:
13114 max_br_offset = 1 << 15;
13117 case R_PPC64_REL24:
13118 /* Calls to functions with a different TOC, such as calls to
13119 shared objects, need to alter the TOC pointer. This is
13120 done using a linkage stub. A REL24 branching to these
13121 linkage stubs needs to be followed by a nop, as the nop
13122 will be replaced with an instruction to restore the TOC
13127 && h->oh->is_func_descriptor)
13128 fdh = ppc_follow_link (h->oh);
13129 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13131 if (stub_entry != NULL
13132 && (stub_entry->stub_type == ppc_stub_plt_call
13133 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13134 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13135 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13137 bfd_boolean can_plt_call = FALSE;
13139 /* All of these stubs will modify r2, so there must be a
13140 branch and link followed by a nop. The nop is
13141 replaced by an insn to restore r2. */
13142 if (rel->r_offset + 8 <= input_section->size)
13146 br = bfd_get_32 (input_bfd,
13147 contents + rel->r_offset);
13152 nop = bfd_get_32 (input_bfd,
13153 contents + rel->r_offset + 4);
13155 || nop == CROR_151515 || nop == CROR_313131)
13158 && (h == htab->tls_get_addr_fd
13159 || h == htab->tls_get_addr)
13160 && !htab->no_tls_get_addr_opt)
13162 /* Special stub used, leave nop alone. */
13165 bfd_put_32 (input_bfd, LD_R2_40R1,
13166 contents + rel->r_offset + 4);
13167 can_plt_call = TRUE;
13172 if (!can_plt_call && h != NULL)
13174 const char *name = h->elf.root.root.string;
13179 if (strncmp (name, "__libc_start_main", 17) == 0
13180 && (name[17] == 0 || name[17] == '@'))
13182 /* Allow crt1 branch to go via a toc adjusting
13183 stub. Other calls that never return could do
13184 the same, if we could detect such. */
13185 can_plt_call = TRUE;
13191 /* g++ as of 20130507 emits self-calls without a
13192 following nop. This is arguably wrong since we
13193 have conflicting information. On the one hand a
13194 global symbol and on the other a local call
13195 sequence, but don't error for this special case.
13196 It isn't possible to cheaply verify we have
13197 exactly such a call. Allow all calls to the same
13199 asection *code_sec = sec;
13201 if (get_opd_info (sec) != NULL)
13203 bfd_vma off = (relocation + addend
13204 - sec->output_section->vma
13205 - sec->output_offset);
13207 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13209 if (code_sec == input_section)
13210 can_plt_call = TRUE;
13215 info->callbacks->einfo
13216 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13217 "recompile with -fPIC"),
13218 input_bfd, input_section, rel->r_offset, sym_name);
13220 bfd_set_error (bfd_error_bad_value);
13225 && (stub_entry->stub_type == ppc_stub_plt_call
13226 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13227 unresolved_reloc = FALSE;
13230 if ((stub_entry == NULL
13231 || stub_entry->stub_type == ppc_stub_long_branch
13232 || stub_entry->stub_type == ppc_stub_plt_branch)
13233 && get_opd_info (sec) != NULL)
13235 /* The branch destination is the value of the opd entry. */
13236 bfd_vma off = (relocation + addend
13237 - sec->output_section->vma
13238 - sec->output_offset);
13239 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13240 if (dest != (bfd_vma) -1)
13244 reloc_dest = DEST_OPD;
13248 /* If the branch is out of reach we ought to have a long
13250 from = (rel->r_offset
13251 + input_section->output_offset
13252 + input_section->output_section->vma);
13254 if (stub_entry != NULL
13255 && (stub_entry->stub_type == ppc_stub_long_branch
13256 || stub_entry->stub_type == ppc_stub_plt_branch)
13257 && (r_type == R_PPC64_ADDR14_BRTAKEN
13258 || r_type == R_PPC64_ADDR14_BRNTAKEN
13259 || (relocation + addend - from + max_br_offset
13260 < 2 * max_br_offset)))
13261 /* Don't use the stub if this branch is in range. */
13264 if (stub_entry != NULL)
13266 /* Munge up the value and addend so that we call the stub
13267 rather than the procedure directly. */
13268 relocation = (stub_entry->stub_offset
13269 + stub_entry->stub_sec->output_offset
13270 + stub_entry->stub_sec->output_section->vma);
13272 reloc_dest = DEST_STUB;
13274 if ((stub_entry->stub_type == ppc_stub_plt_call
13275 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13276 && (ALWAYS_EMIT_R2SAVE
13277 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13278 && rel + 1 < relend
13279 && rel[1].r_offset == rel->r_offset + 4
13280 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13288 /* Set 'a' bit. This is 0b00010 in BO field for branch
13289 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13290 for branch on CTR insns (BO == 1a00t or 1a01t). */
13291 if ((insn & (0x14 << 21)) == (0x04 << 21))
13292 insn |= 0x02 << 21;
13293 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13294 insn |= 0x08 << 21;
13300 /* Invert 'y' bit if not the default. */
13301 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13302 insn ^= 0x01 << 21;
13305 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13308 /* NOP out calls to undefined weak functions.
13309 We can thus call a weak function without first
13310 checking whether the function is defined. */
13312 && h->elf.root.type == bfd_link_hash_undefweak
13313 && h->elf.dynindx == -1
13314 && r_type == R_PPC64_REL24
13318 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13324 /* Set `addend'. */
13329 info->callbacks->einfo
13330 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13331 input_bfd, (int) r_type, sym_name);
13333 bfd_set_error (bfd_error_bad_value);
13339 case R_PPC64_TLSGD:
13340 case R_PPC64_TLSLD:
13341 case R_PPC64_TOCSAVE:
13342 case R_PPC64_GNU_VTINHERIT:
13343 case R_PPC64_GNU_VTENTRY:
13346 /* GOT16 relocations. Like an ADDR16 using the symbol's
13347 address in the GOT as relocation value instead of the
13348 symbol's value itself. Also, create a GOT entry for the
13349 symbol and put the symbol value there. */
13350 case R_PPC64_GOT_TLSGD16:
13351 case R_PPC64_GOT_TLSGD16_LO:
13352 case R_PPC64_GOT_TLSGD16_HI:
13353 case R_PPC64_GOT_TLSGD16_HA:
13354 tls_type = TLS_TLS | TLS_GD;
13357 case R_PPC64_GOT_TLSLD16:
13358 case R_PPC64_GOT_TLSLD16_LO:
13359 case R_PPC64_GOT_TLSLD16_HI:
13360 case R_PPC64_GOT_TLSLD16_HA:
13361 tls_type = TLS_TLS | TLS_LD;
13364 case R_PPC64_GOT_TPREL16_DS:
13365 case R_PPC64_GOT_TPREL16_LO_DS:
13366 case R_PPC64_GOT_TPREL16_HI:
13367 case R_PPC64_GOT_TPREL16_HA:
13368 tls_type = TLS_TLS | TLS_TPREL;
13371 case R_PPC64_GOT_DTPREL16_DS:
13372 case R_PPC64_GOT_DTPREL16_LO_DS:
13373 case R_PPC64_GOT_DTPREL16_HI:
13374 case R_PPC64_GOT_DTPREL16_HA:
13375 tls_type = TLS_TLS | TLS_DTPREL;
13378 case R_PPC64_GOT16:
13379 case R_PPC64_GOT16_LO:
13380 case R_PPC64_GOT16_HI:
13381 case R_PPC64_GOT16_HA:
13382 case R_PPC64_GOT16_DS:
13383 case R_PPC64_GOT16_LO_DS:
13386 /* Relocation is to the entry for this symbol in the global
13391 unsigned long indx = 0;
13392 struct got_entry *ent;
13394 if (tls_type == (TLS_TLS | TLS_LD)
13396 || !h->elf.def_dynamic))
13397 ent = ppc64_tlsld_got (input_bfd);
13403 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13404 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13407 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13408 /* This is actually a static link, or it is a
13409 -Bsymbolic link and the symbol is defined
13410 locally, or the symbol was forced to be local
13411 because of a version file. */
13415 BFD_ASSERT (h->elf.dynindx != -1);
13416 indx = h->elf.dynindx;
13417 unresolved_reloc = FALSE;
13419 ent = h->elf.got.glist;
13423 if (local_got_ents == NULL)
13425 ent = local_got_ents[r_symndx];
13428 for (; ent != NULL; ent = ent->next)
13429 if (ent->addend == orig_rel.r_addend
13430 && ent->owner == input_bfd
13431 && ent->tls_type == tls_type)
13437 if (ent->is_indirect)
13438 ent = ent->got.ent;
13439 offp = &ent->got.offset;
13440 got = ppc64_elf_tdata (ent->owner)->got;
13444 /* The offset must always be a multiple of 8. We use the
13445 least significant bit to record whether we have already
13446 processed this entry. */
13448 if ((off & 1) != 0)
13452 /* Generate relocs for the dynamic linker, except in
13453 the case of TLSLD where we'll use one entry per
13461 ? h->elf.type == STT_GNU_IFUNC
13462 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13464 relgot = htab->reliplt;
13465 else if ((info->shared || indx != 0)
13467 || (tls_type == (TLS_TLS | TLS_LD)
13468 && !h->elf.def_dynamic)
13469 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13470 || h->elf.root.type != bfd_link_hash_undefweak))
13471 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13472 if (relgot != NULL)
13474 outrel.r_offset = (got->output_section->vma
13475 + got->output_offset
13477 outrel.r_addend = addend;
13478 if (tls_type & (TLS_LD | TLS_GD))
13480 outrel.r_addend = 0;
13481 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13482 if (tls_type == (TLS_TLS | TLS_GD))
13484 loc = relgot->contents;
13485 loc += (relgot->reloc_count++
13486 * sizeof (Elf64_External_Rela));
13487 bfd_elf64_swap_reloca_out (output_bfd,
13489 outrel.r_offset += 8;
13490 outrel.r_addend = addend;
13492 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13495 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13496 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13497 else if (tls_type == (TLS_TLS | TLS_TPREL))
13498 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13499 else if (indx != 0)
13500 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13504 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13506 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13508 /* Write the .got section contents for the sake
13510 loc = got->contents + off;
13511 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13515 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13517 outrel.r_addend += relocation;
13518 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13519 outrel.r_addend -= htab->elf.tls_sec->vma;
13521 loc = relgot->contents;
13522 loc += (relgot->reloc_count++
13523 * sizeof (Elf64_External_Rela));
13524 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13527 /* Init the .got section contents here if we're not
13528 emitting a reloc. */
13531 relocation += addend;
13532 if (tls_type == (TLS_TLS | TLS_LD))
13534 else if (tls_type != 0)
13536 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13537 if (tls_type == (TLS_TLS | TLS_TPREL))
13538 relocation += DTP_OFFSET - TP_OFFSET;
13540 if (tls_type == (TLS_TLS | TLS_GD))
13542 bfd_put_64 (output_bfd, relocation,
13543 got->contents + off + 8);
13548 bfd_put_64 (output_bfd, relocation,
13549 got->contents + off);
13553 if (off >= (bfd_vma) -2)
13556 relocation = got->output_section->vma + got->output_offset + off;
13557 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
13561 case R_PPC64_PLT16_HA:
13562 case R_PPC64_PLT16_HI:
13563 case R_PPC64_PLT16_LO:
13564 case R_PPC64_PLT32:
13565 case R_PPC64_PLT64:
13566 /* Relocation is to the entry for this symbol in the
13567 procedure linkage table. */
13569 /* Resolve a PLT reloc against a local symbol directly,
13570 without using the procedure linkage table. */
13574 /* It's possible that we didn't make a PLT entry for this
13575 symbol. This happens when statically linking PIC code,
13576 or when using -Bsymbolic. Go find a match if there is a
13578 if (htab->plt != NULL)
13580 struct plt_entry *ent;
13581 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
13582 if (ent->addend == orig_rel.r_addend
13583 && ent->plt.offset != (bfd_vma) -1)
13585 relocation = (htab->plt->output_section->vma
13586 + htab->plt->output_offset
13587 + ent->plt.offset);
13588 unresolved_reloc = FALSE;
13594 /* Relocation value is TOC base. */
13595 relocation = TOCstart;
13596 if (r_symndx == STN_UNDEF)
13597 relocation += htab->stub_group[input_section->id].toc_off;
13598 else if (unresolved_reloc)
13600 else if (sec != NULL && sec->id <= htab->top_id)
13601 relocation += htab->stub_group[sec->id].toc_off;
13603 unresolved_reloc = TRUE;
13606 /* TOC16 relocs. We want the offset relative to the TOC base,
13607 which is the address of the start of the TOC plus 0x8000.
13608 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13610 case R_PPC64_TOC16:
13611 case R_PPC64_TOC16_LO:
13612 case R_PPC64_TOC16_HI:
13613 case R_PPC64_TOC16_DS:
13614 case R_PPC64_TOC16_LO_DS:
13615 case R_PPC64_TOC16_HA:
13616 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
13619 /* Relocate against the beginning of the section. */
13620 case R_PPC64_SECTOFF:
13621 case R_PPC64_SECTOFF_LO:
13622 case R_PPC64_SECTOFF_HI:
13623 case R_PPC64_SECTOFF_DS:
13624 case R_PPC64_SECTOFF_LO_DS:
13625 case R_PPC64_SECTOFF_HA:
13627 addend -= sec->output_section->vma;
13630 case R_PPC64_REL16:
13631 case R_PPC64_REL16_LO:
13632 case R_PPC64_REL16_HI:
13633 case R_PPC64_REL16_HA:
13636 case R_PPC64_REL14:
13637 case R_PPC64_REL14_BRNTAKEN:
13638 case R_PPC64_REL14_BRTAKEN:
13639 case R_PPC64_REL24:
13642 case R_PPC64_TPREL16:
13643 case R_PPC64_TPREL16_LO:
13644 case R_PPC64_TPREL16_HI:
13645 case R_PPC64_TPREL16_HA:
13646 case R_PPC64_TPREL16_DS:
13647 case R_PPC64_TPREL16_LO_DS:
13648 case R_PPC64_TPREL16_HIGH:
13649 case R_PPC64_TPREL16_HIGHA:
13650 case R_PPC64_TPREL16_HIGHER:
13651 case R_PPC64_TPREL16_HIGHERA:
13652 case R_PPC64_TPREL16_HIGHEST:
13653 case R_PPC64_TPREL16_HIGHESTA:
13655 && h->elf.root.type == bfd_link_hash_undefweak
13656 && h->elf.dynindx == -1)
13658 /* Make this relocation against an undefined weak symbol
13659 resolve to zero. This is really just a tweak, since
13660 code using weak externs ought to check that they are
13661 defined before using them. */
13662 bfd_byte *p = contents + rel->r_offset - d_offset;
13664 insn = bfd_get_32 (output_bfd, p);
13665 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
13667 bfd_put_32 (output_bfd, insn, p);
13670 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13672 /* The TPREL16 relocs shouldn't really be used in shared
13673 libs as they will result in DT_TEXTREL being set, but
13674 support them anyway. */
13678 case R_PPC64_DTPREL16:
13679 case R_PPC64_DTPREL16_LO:
13680 case R_PPC64_DTPREL16_HI:
13681 case R_PPC64_DTPREL16_HA:
13682 case R_PPC64_DTPREL16_DS:
13683 case R_PPC64_DTPREL16_LO_DS:
13684 case R_PPC64_DTPREL16_HIGH:
13685 case R_PPC64_DTPREL16_HIGHA:
13686 case R_PPC64_DTPREL16_HIGHER:
13687 case R_PPC64_DTPREL16_HIGHERA:
13688 case R_PPC64_DTPREL16_HIGHEST:
13689 case R_PPC64_DTPREL16_HIGHESTA:
13690 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13693 case R_PPC64_DTPMOD64:
13698 case R_PPC64_TPREL64:
13699 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13702 case R_PPC64_DTPREL64:
13703 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13706 /* Relocations that may need to be propagated if this is a
13708 case R_PPC64_REL30:
13709 case R_PPC64_REL32:
13710 case R_PPC64_REL64:
13711 case R_PPC64_ADDR14:
13712 case R_PPC64_ADDR14_BRNTAKEN:
13713 case R_PPC64_ADDR14_BRTAKEN:
13714 case R_PPC64_ADDR16:
13715 case R_PPC64_ADDR16_DS:
13716 case R_PPC64_ADDR16_HA:
13717 case R_PPC64_ADDR16_HI:
13718 case R_PPC64_ADDR16_HIGH:
13719 case R_PPC64_ADDR16_HIGHA:
13720 case R_PPC64_ADDR16_HIGHER:
13721 case R_PPC64_ADDR16_HIGHERA:
13722 case R_PPC64_ADDR16_HIGHEST:
13723 case R_PPC64_ADDR16_HIGHESTA:
13724 case R_PPC64_ADDR16_LO:
13725 case R_PPC64_ADDR16_LO_DS:
13726 case R_PPC64_ADDR24:
13727 case R_PPC64_ADDR32:
13728 case R_PPC64_ADDR64:
13729 case R_PPC64_UADDR16:
13730 case R_PPC64_UADDR32:
13731 case R_PPC64_UADDR64:
13733 if ((input_section->flags & SEC_ALLOC) == 0)
13736 if (NO_OPD_RELOCS && is_opd)
13741 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13742 || h->elf.root.type != bfd_link_hash_undefweak)
13743 && (must_be_dyn_reloc (info, r_type)
13744 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
13745 || (ELIMINATE_COPY_RELOCS
13748 && h->elf.dynindx != -1
13749 && !h->elf.non_got_ref
13750 && !h->elf.def_regular)
13753 ? h->elf.type == STT_GNU_IFUNC
13754 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
13756 bfd_boolean skip, relocate;
13760 /* When generating a dynamic object, these relocations
13761 are copied into the output file to be resolved at run
13767 out_off = _bfd_elf_section_offset (output_bfd, info,
13768 input_section, rel->r_offset);
13769 if (out_off == (bfd_vma) -1)
13771 else if (out_off == (bfd_vma) -2)
13772 skip = TRUE, relocate = TRUE;
13773 out_off += (input_section->output_section->vma
13774 + input_section->output_offset);
13775 outrel.r_offset = out_off;
13776 outrel.r_addend = rel->r_addend;
13778 /* Optimize unaligned reloc use. */
13779 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
13780 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
13781 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
13782 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
13783 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
13784 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
13785 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
13786 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
13787 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
13790 memset (&outrel, 0, sizeof outrel);
13791 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
13793 && r_type != R_PPC64_TOC)
13795 BFD_ASSERT (h->elf.dynindx != -1);
13796 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
13800 /* This symbol is local, or marked to become local,
13801 or this is an opd section reloc which must point
13802 at a local function. */
13803 outrel.r_addend += relocation;
13804 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
13806 if (is_opd && h != NULL)
13808 /* Lie about opd entries. This case occurs
13809 when building shared libraries and we
13810 reference a function in another shared
13811 lib. The same thing happens for a weak
13812 definition in an application that's
13813 overridden by a strong definition in a
13814 shared lib. (I believe this is a generic
13815 bug in binutils handling of weak syms.)
13816 In these cases we won't use the opd
13817 entry in this lib. */
13818 unresolved_reloc = FALSE;
13821 && r_type == R_PPC64_ADDR64
13823 ? h->elf.type == STT_GNU_IFUNC
13824 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
13825 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13828 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13830 /* We need to relocate .opd contents for ld.so.
13831 Prelink also wants simple and consistent rules
13832 for relocs. This make all RELATIVE relocs have
13833 *r_offset equal to r_addend. */
13842 ? h->elf.type == STT_GNU_IFUNC
13843 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13845 info->callbacks->einfo
13846 (_("%P: %H: %s for indirect "
13847 "function `%T' unsupported\n"),
13848 input_bfd, input_section, rel->r_offset,
13849 ppc64_elf_howto_table[r_type]->name,
13853 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
13855 else if (sec == NULL || sec->owner == NULL)
13857 bfd_set_error (bfd_error_bad_value);
13864 osec = sec->output_section;
13865 indx = elf_section_data (osec)->dynindx;
13869 if ((osec->flags & SEC_READONLY) == 0
13870 && htab->elf.data_index_section != NULL)
13871 osec = htab->elf.data_index_section;
13873 osec = htab->elf.text_index_section;
13874 indx = elf_section_data (osec)->dynindx;
13876 BFD_ASSERT (indx != 0);
13878 /* We are turning this relocation into one
13879 against a section symbol, so subtract out
13880 the output section's address but not the
13881 offset of the input section in the output
13883 outrel.r_addend -= osec->vma;
13886 outrel.r_info = ELF64_R_INFO (indx, r_type);
13890 sreloc = elf_section_data (input_section)->sreloc;
13892 ? h->elf.type == STT_GNU_IFUNC
13893 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13894 sreloc = htab->reliplt;
13895 if (sreloc == NULL)
13898 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13901 loc = sreloc->contents;
13902 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13903 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13905 /* If this reloc is against an external symbol, it will
13906 be computed at runtime, so there's no need to do
13907 anything now. However, for the sake of prelink ensure
13908 that the section contents are a known value. */
13911 unresolved_reloc = FALSE;
13912 /* The value chosen here is quite arbitrary as ld.so
13913 ignores section contents except for the special
13914 case of .opd where the contents might be accessed
13915 before relocation. Choose zero, as that won't
13916 cause reloc overflow. */
13919 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13920 to improve backward compatibility with older
13922 if (r_type == R_PPC64_ADDR64)
13923 addend = outrel.r_addend;
13924 /* Adjust pc_relative relocs to have zero in *r_offset. */
13925 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13926 addend = (input_section->output_section->vma
13927 + input_section->output_offset
13934 case R_PPC64_GLOB_DAT:
13935 case R_PPC64_JMP_SLOT:
13936 case R_PPC64_JMP_IREL:
13937 case R_PPC64_RELATIVE:
13938 /* We shouldn't ever see these dynamic relocs in relocatable
13940 /* Fall through. */
13942 case R_PPC64_PLTGOT16:
13943 case R_PPC64_PLTGOT16_DS:
13944 case R_PPC64_PLTGOT16_HA:
13945 case R_PPC64_PLTGOT16_HI:
13946 case R_PPC64_PLTGOT16_LO:
13947 case R_PPC64_PLTGOT16_LO_DS:
13948 case R_PPC64_PLTREL32:
13949 case R_PPC64_PLTREL64:
13950 /* These ones haven't been implemented yet. */
13952 info->callbacks->einfo
13953 (_("%P: %B: %s is not supported for `%T'\n"),
13955 ppc64_elf_howto_table[r_type]->name, sym_name);
13957 bfd_set_error (bfd_error_invalid_operation);
13962 /* Multi-instruction sequences that access the TOC can be
13963 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13964 to nop; addi rb,r2,x; */
13970 case R_PPC64_GOT_TLSLD16_HI:
13971 case R_PPC64_GOT_TLSGD16_HI:
13972 case R_PPC64_GOT_TPREL16_HI:
13973 case R_PPC64_GOT_DTPREL16_HI:
13974 case R_PPC64_GOT16_HI:
13975 case R_PPC64_TOC16_HI:
13976 /* These relocs would only be useful if building up an
13977 offset to later add to r2, perhaps in an indexed
13978 addressing mode instruction. Don't try to optimize.
13979 Unfortunately, the possibility of someone building up an
13980 offset like this or even with the HA relocs, means that
13981 we need to check the high insn when optimizing the low
13985 case R_PPC64_GOT_TLSLD16_HA:
13986 case R_PPC64_GOT_TLSGD16_HA:
13987 case R_PPC64_GOT_TPREL16_HA:
13988 case R_PPC64_GOT_DTPREL16_HA:
13989 case R_PPC64_GOT16_HA:
13990 case R_PPC64_TOC16_HA:
13991 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13992 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13994 bfd_byte *p = contents + (rel->r_offset & ~3);
13995 bfd_put_32 (input_bfd, NOP, p);
13999 case R_PPC64_GOT_TLSLD16_LO:
14000 case R_PPC64_GOT_TLSGD16_LO:
14001 case R_PPC64_GOT_TPREL16_LO_DS:
14002 case R_PPC64_GOT_DTPREL16_LO_DS:
14003 case R_PPC64_GOT16_LO:
14004 case R_PPC64_GOT16_LO_DS:
14005 case R_PPC64_TOC16_LO:
14006 case R_PPC64_TOC16_LO_DS:
14007 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14008 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14010 bfd_byte *p = contents + (rel->r_offset & ~3);
14011 insn = bfd_get_32 (input_bfd, p);
14012 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14014 /* Transform addic to addi when we change reg. */
14015 insn &= ~((0x3f << 26) | (0x1f << 16));
14016 insn |= (14u << 26) | (2 << 16);
14020 insn &= ~(0x1f << 16);
14023 bfd_put_32 (input_bfd, insn, p);
14028 /* Do any further special processing. */
14034 case R_PPC64_REL16_HA:
14035 case R_PPC64_ADDR16_HA:
14036 case R_PPC64_ADDR16_HIGHA:
14037 case R_PPC64_ADDR16_HIGHERA:
14038 case R_PPC64_ADDR16_HIGHESTA:
14039 case R_PPC64_TOC16_HA:
14040 case R_PPC64_SECTOFF_HA:
14041 case R_PPC64_TPREL16_HA:
14042 case R_PPC64_TPREL16_HIGHA:
14043 case R_PPC64_TPREL16_HIGHERA:
14044 case R_PPC64_TPREL16_HIGHESTA:
14045 case R_PPC64_DTPREL16_HA:
14046 case R_PPC64_DTPREL16_HIGHA:
14047 case R_PPC64_DTPREL16_HIGHERA:
14048 case R_PPC64_DTPREL16_HIGHESTA:
14049 /* It's just possible that this symbol is a weak symbol
14050 that's not actually defined anywhere. In that case,
14051 'sec' would be NULL, and we should leave the symbol
14052 alone (it will be set to zero elsewhere in the link). */
14057 case R_PPC64_GOT16_HA:
14058 case R_PPC64_PLTGOT16_HA:
14059 case R_PPC64_PLT16_HA:
14060 case R_PPC64_GOT_TLSGD16_HA:
14061 case R_PPC64_GOT_TLSLD16_HA:
14062 case R_PPC64_GOT_TPREL16_HA:
14063 case R_PPC64_GOT_DTPREL16_HA:
14064 /* Add 0x10000 if sign bit in 0:15 is set.
14065 Bits 0:15 are not used. */
14069 case R_PPC64_ADDR16_DS:
14070 case R_PPC64_ADDR16_LO_DS:
14071 case R_PPC64_GOT16_DS:
14072 case R_PPC64_GOT16_LO_DS:
14073 case R_PPC64_PLT16_LO_DS:
14074 case R_PPC64_SECTOFF_DS:
14075 case R_PPC64_SECTOFF_LO_DS:
14076 case R_PPC64_TOC16_DS:
14077 case R_PPC64_TOC16_LO_DS:
14078 case R_PPC64_PLTGOT16_DS:
14079 case R_PPC64_PLTGOT16_LO_DS:
14080 case R_PPC64_GOT_TPREL16_DS:
14081 case R_PPC64_GOT_TPREL16_LO_DS:
14082 case R_PPC64_GOT_DTPREL16_DS:
14083 case R_PPC64_GOT_DTPREL16_LO_DS:
14084 case R_PPC64_TPREL16_DS:
14085 case R_PPC64_TPREL16_LO_DS:
14086 case R_PPC64_DTPREL16_DS:
14087 case R_PPC64_DTPREL16_LO_DS:
14088 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14090 /* If this reloc is against an lq insn, then the value must be
14091 a multiple of 16. This is somewhat of a hack, but the
14092 "correct" way to do this by defining _DQ forms of all the
14093 _DS relocs bloats all reloc switches in this file. It
14094 doesn't seem to make much sense to use any of these relocs
14095 in data, so testing the insn should be safe. */
14096 if ((insn & (0x3f << 26)) == (56u << 26))
14098 if (((relocation + addend) & mask) != 0)
14100 info->callbacks->einfo
14101 (_("%P: %H: error: %s not a multiple of %u\n"),
14102 input_bfd, input_section, rel->r_offset,
14103 ppc64_elf_howto_table[r_type]->name,
14105 bfd_set_error (bfd_error_bad_value);
14112 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14113 because such sections are not SEC_ALLOC and thus ld.so will
14114 not process them. */
14115 if (unresolved_reloc
14116 && !((input_section->flags & SEC_DEBUGGING) != 0
14117 && h->elf.def_dynamic)
14118 && _bfd_elf_section_offset (output_bfd, info, input_section,
14119 rel->r_offset) != (bfd_vma) -1)
14121 info->callbacks->einfo
14122 (_("%P: %H: unresolvable %s against `%T'\n"),
14123 input_bfd, input_section, rel->r_offset,
14124 ppc64_elf_howto_table[(int) r_type]->name,
14125 h->elf.root.root.string);
14129 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
14137 if (r != bfd_reloc_ok)
14139 char *more_info = NULL;
14140 const char *reloc_name = ppc64_elf_howto_table[r_type]->name;
14142 if (reloc_dest != DEST_NORMAL)
14144 more_info = bfd_malloc (strlen (reloc_name) + 8);
14145 if (more_info != NULL)
14147 strcpy (more_info, reloc_name);
14148 strcat (more_info, (reloc_dest == DEST_OPD
14149 ? " (OPD)" : " (stub)"));
14150 reloc_name = more_info;
14154 if (r == bfd_reloc_overflow)
14159 && h->elf.root.type == bfd_link_hash_undefweak
14160 && ppc64_elf_howto_table[r_type]->pc_relative)
14162 /* Assume this is a call protected by other code that
14163 detects the symbol is undefined. If this is the case,
14164 we can safely ignore the overflow. If not, the
14165 program is hosed anyway, and a little warning isn't
14171 if (!((*info->callbacks->reloc_overflow)
14172 (info, &h->elf.root, sym_name,
14173 reloc_name, orig_rel.r_addend,
14174 input_bfd, input_section, rel->r_offset)))
14179 info->callbacks->einfo
14180 (_("%P: %H: %s against `%T': error %d\n"),
14181 input_bfd, input_section, rel->r_offset,
14182 reloc_name, sym_name, (int) r);
14185 if (more_info != NULL)
14190 /* If we're emitting relocations, then shortly after this function
14191 returns, reloc offsets and addends for this section will be
14192 adjusted. Worse, reloc symbol indices will be for the output
14193 file rather than the input. Save a copy of the relocs for
14194 opd_entry_value. */
14195 if (is_opd && (info->emitrelocations || info->relocatable))
14198 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14199 rel = bfd_alloc (input_bfd, amt);
14200 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14201 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14204 memcpy (rel, relocs, amt);
14209 /* Adjust the value of any local symbols in opd sections. */
14212 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14213 const char *name ATTRIBUTE_UNUSED,
14214 Elf_Internal_Sym *elfsym,
14215 asection *input_sec,
14216 struct elf_link_hash_entry *h)
14218 struct _opd_sec_data *opd;
14225 opd = get_opd_info (input_sec);
14226 if (opd == NULL || opd->adjust == NULL)
14229 value = elfsym->st_value - input_sec->output_offset;
14230 if (!info->relocatable)
14231 value -= input_sec->output_section->vma;
14233 adjust = opd->adjust[value / 8];
14237 elfsym->st_value += adjust;
14241 /* Finish up dynamic symbol handling. We set the contents of various
14242 dynamic sections here. */
14245 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14246 struct bfd_link_info *info,
14247 struct elf_link_hash_entry *h,
14248 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14250 struct ppc_link_hash_table *htab;
14251 struct plt_entry *ent;
14252 Elf_Internal_Rela rela;
14255 htab = ppc_hash_table (info);
14259 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14260 if (ent->plt.offset != (bfd_vma) -1)
14262 /* This symbol has an entry in the procedure linkage
14263 table. Set it up. */
14264 if (!htab->elf.dynamic_sections_created
14265 || h->dynindx == -1)
14267 BFD_ASSERT (h->type == STT_GNU_IFUNC
14269 && (h->root.type == bfd_link_hash_defined
14270 || h->root.type == bfd_link_hash_defweak));
14271 rela.r_offset = (htab->iplt->output_section->vma
14272 + htab->iplt->output_offset
14273 + ent->plt.offset);
14274 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14275 rela.r_addend = (h->root.u.def.value
14276 + h->root.u.def.section->output_offset
14277 + h->root.u.def.section->output_section->vma
14279 loc = (htab->reliplt->contents
14280 + (htab->reliplt->reloc_count++
14281 * sizeof (Elf64_External_Rela)));
14285 rela.r_offset = (htab->plt->output_section->vma
14286 + htab->plt->output_offset
14287 + ent->plt.offset);
14288 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14289 rela.r_addend = ent->addend;
14290 loc = (htab->relplt->contents
14291 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
14292 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
14294 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14299 /* This symbol needs a copy reloc. Set it up. */
14301 if (h->dynindx == -1
14302 || (h->root.type != bfd_link_hash_defined
14303 && h->root.type != bfd_link_hash_defweak)
14304 || htab->relbss == NULL)
14307 rela.r_offset = (h->root.u.def.value
14308 + h->root.u.def.section->output_section->vma
14309 + h->root.u.def.section->output_offset);
14310 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14312 loc = htab->relbss->contents;
14313 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14314 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14320 /* Used to decide how to sort relocs in an optimal manner for the
14321 dynamic linker, before writing them out. */
14323 static enum elf_reloc_type_class
14324 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14325 const asection *rel_sec,
14326 const Elf_Internal_Rela *rela)
14328 enum elf_ppc64_reloc_type r_type;
14329 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14331 if (rel_sec == htab->reliplt)
14332 return reloc_class_ifunc;
14334 r_type = ELF64_R_TYPE (rela->r_info);
14337 case R_PPC64_RELATIVE:
14338 return reloc_class_relative;
14339 case R_PPC64_JMP_SLOT:
14340 return reloc_class_plt;
14342 return reloc_class_copy;
14344 return reloc_class_normal;
14348 /* Finish up the dynamic sections. */
14351 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14352 struct bfd_link_info *info)
14354 struct ppc_link_hash_table *htab;
14358 htab = ppc_hash_table (info);
14362 dynobj = htab->elf.dynobj;
14363 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14365 if (htab->elf.dynamic_sections_created)
14367 Elf64_External_Dyn *dyncon, *dynconend;
14369 if (sdyn == NULL || htab->got == NULL)
14372 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14373 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14374 for (; dyncon < dynconend; dyncon++)
14376 Elf_Internal_Dyn dyn;
14379 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14386 case DT_PPC64_GLINK:
14388 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14389 /* We stupidly defined DT_PPC64_GLINK to be the start
14390 of glink rather than the first entry point, which is
14391 what ld.so needs, and now have a bigger stub to
14392 support automatic multiple TOCs. */
14393 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
14397 s = bfd_get_section_by_name (output_bfd, ".opd");
14400 dyn.d_un.d_ptr = s->vma;
14403 case DT_PPC64_OPDSZ:
14404 s = bfd_get_section_by_name (output_bfd, ".opd");
14407 dyn.d_un.d_val = s->size;
14412 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14417 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14421 dyn.d_un.d_val = htab->relplt->size;
14425 /* Don't count procedure linkage table relocs in the
14426 overall reloc count. */
14430 dyn.d_un.d_val -= s->size;
14434 /* We may not be using the standard ELF linker script.
14435 If .rela.plt is the first .rela section, we adjust
14436 DT_RELA to not include it. */
14440 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14442 dyn.d_un.d_ptr += s->size;
14446 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14450 if (htab->got != NULL && htab->got->size != 0)
14452 /* Fill in the first entry in the global offset table.
14453 We use it to hold the link-time TOCbase. */
14454 bfd_put_64 (output_bfd,
14455 elf_gp (output_bfd) + TOC_BASE_OFF,
14456 htab->got->contents);
14458 /* Set .got entry size. */
14459 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
14462 if (htab->plt != NULL && htab->plt->size != 0)
14464 /* Set .plt entry size. */
14465 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
14469 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14470 brlt ourselves if emitrelocations. */
14471 if (htab->brlt != NULL
14472 && htab->brlt->reloc_count != 0
14473 && !_bfd_elf_link_output_relocs (output_bfd,
14475 elf_section_data (htab->brlt)->rela.hdr,
14476 elf_section_data (htab->brlt)->relocs,
14480 if (htab->glink != NULL
14481 && htab->glink->reloc_count != 0
14482 && !_bfd_elf_link_output_relocs (output_bfd,
14484 elf_section_data (htab->glink)->rela.hdr,
14485 elf_section_data (htab->glink)->relocs,
14490 if (htab->glink_eh_frame != NULL
14491 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
14492 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14493 htab->glink_eh_frame,
14494 htab->glink_eh_frame->contents))
14497 /* We need to handle writing out multiple GOT sections ourselves,
14498 since we didn't add them to DYNOBJ. We know dynobj is the first
14500 while ((dynobj = dynobj->link_next) != NULL)
14504 if (!is_ppc64_elf (dynobj))
14507 s = ppc64_elf_tdata (dynobj)->got;
14510 && s->output_section != bfd_abs_section_ptr
14511 && !bfd_set_section_contents (output_bfd, s->output_section,
14512 s->contents, s->output_offset,
14515 s = ppc64_elf_tdata (dynobj)->relgot;
14518 && s->output_section != bfd_abs_section_ptr
14519 && !bfd_set_section_contents (output_bfd, s->output_section,
14520 s->contents, s->output_offset,
14528 #include "elf64-target.h"
14530 /* FreeBSD support */
14532 #undef TARGET_LITTLE_SYM
14533 #undef TARGET_LITTLE_NAME
14535 #undef TARGET_BIG_SYM
14536 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14537 #undef TARGET_BIG_NAME
14538 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14541 #define ELF_OSABI ELFOSABI_FREEBSD
14544 #define elf64_bed elf64_powerpc_fbsd_bed
14546 #include "elf64-target.h"