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 *);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_post_process_headers _bfd_elf_set_osabi
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE 24
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
131 /* TOC base pointers offset from start of TOC. */
132 #define TOC_BASE_OFF 0x8000
134 /* Offset of tp and dtp pointers from start of TLS block. */
135 #define TP_OFFSET 0x7000
136 #define DTP_OFFSET 0x8000
138 /* .plt call stub instructions. The normal stub is like this, but
139 sometimes the .plt entry crosses a 64k boundary and we need to
140 insert an addi to adjust r12. */
141 #define PLT_CALL_STUB_SIZE (7*4)
142 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
143 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
144 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
145 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
146 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
147 /* ld %r11,xxx+16@l(%r12) */
148 #define BCTR 0x4e800420 /* bctr */
151 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
152 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
153 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
154 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
156 #define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
157 #define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
158 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
159 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
160 #define BNECTR 0x4ca20420 /* bnectr+ */
161 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
163 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
164 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
166 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
168 /* glink call stub instructions. We enter with the index in R0. */
169 #define GLINK_CALL_STUB_SIZE (16*4)
173 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
174 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
176 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
177 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
178 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
187 #define NOP 0x60000000
189 /* Some other nops. */
190 #define CROR_151515 0x4def7b82
191 #define CROR_313131 0x4ffffb82
193 /* .glink entries for the first 32k functions are two instructions. */
194 #define LI_R0_0 0x38000000 /* li %r0,0 */
195 #define B_DOT 0x48000000 /* b . */
197 /* After that, we need two instructions to load the index, followed by
199 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
200 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
202 /* Instructions used by the save and restore reg functions. */
203 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
204 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
205 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
206 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
207 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
208 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
209 #define LI_R12_0 0x39800000 /* li %r12,0 */
210 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
211 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
212 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
213 #define BLR 0x4e800020 /* blr */
215 /* Since .opd is an array of descriptors and each entry will end up
216 with identical R_PPC64_RELATIVE relocs, there is really no need to
217 propagate .opd relocs; The dynamic linker should be taught to
218 relocate .opd without reloc entries. */
219 #ifndef NO_OPD_RELOCS
220 #define NO_OPD_RELOCS 0
223 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
225 /* Relocation HOWTO's. */
226 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
228 static reloc_howto_type ppc64_elf_howto_raw[] = {
229 /* This reloc does nothing. */
230 HOWTO (R_PPC64_NONE, /* type */
232 2, /* size (0 = byte, 1 = short, 2 = long) */
234 FALSE, /* pc_relative */
236 complain_overflow_dont, /* complain_on_overflow */
237 bfd_elf_generic_reloc, /* special_function */
238 "R_PPC64_NONE", /* name */
239 FALSE, /* partial_inplace */
242 FALSE), /* pcrel_offset */
244 /* A standard 32 bit relocation. */
245 HOWTO (R_PPC64_ADDR32, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_bitfield, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_PPC64_ADDR32", /* name */
254 FALSE, /* partial_inplace */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
259 /* An absolute 26 bit branch; the lower two bits must be zero.
260 FIXME: we don't check that, we just clear them. */
261 HOWTO (R_PPC64_ADDR24, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR24", /* name */
270 FALSE, /* partial_inplace */
272 0x03fffffc, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* A standard 16 bit relocation. */
276 HOWTO (R_PPC64_ADDR16, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_PPC64_ADDR16", /* name */
285 FALSE, /* partial_inplace */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* A 16 bit relocation without overflow. */
291 HOWTO (R_PPC64_ADDR16_LO, /* type */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE, /* pc_relative */
297 complain_overflow_dont,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_PPC64_ADDR16_LO", /* name */
300 FALSE, /* partial_inplace */
302 0xffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
305 /* Bits 16-31 of an address. */
306 HOWTO (R_PPC64_ADDR16_HI, /* type */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC64_ADDR16_HI", /* name */
315 FALSE, /* partial_inplace */
317 0xffff, /* dst_mask */
318 FALSE), /* pcrel_offset */
320 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
321 bits, treated as a signed number, is negative. */
322 HOWTO (R_PPC64_ADDR16_HA, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_dont, /* complain_on_overflow */
329 ppc64_elf_ha_reloc, /* special_function */
330 "R_PPC64_ADDR16_HA", /* name */
331 FALSE, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* An absolute 16 bit branch; the lower two bits must be zero.
337 FIXME: we don't check that, we just clear them. */
338 HOWTO (R_PPC64_ADDR14, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 ppc64_elf_branch_reloc, /* special_function */
346 "R_PPC64_ADDR14", /* name */
347 FALSE, /* partial_inplace */
349 0x0000fffc, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* An absolute 16 bit branch, for which bit 10 should be set to
353 indicate that the branch is expected to be taken. The lower two
354 bits must be zero. */
355 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 ppc64_elf_brtaken_reloc, /* special_function */
363 "R_PPC64_ADDR14_BRTAKEN",/* name */
364 FALSE, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is not expected to be taken. The lower
371 two bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE, /* pc_relative */
378 complain_overflow_bitfield, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc, /* special_function */
380 "R_PPC64_ADDR14_BRNTAKEN",/* name */
381 FALSE, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE), /* pcrel_offset */
386 /* A relative 26 bit branch; the lower two bits must be zero. */
387 HOWTO (R_PPC64_REL24, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 ppc64_elf_branch_reloc, /* special_function */
395 "R_PPC64_REL24", /* name */
396 FALSE, /* partial_inplace */
398 0x03fffffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
401 /* A relative 16 bit branch; the lower two bits must be zero. */
402 HOWTO (R_PPC64_REL14, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 TRUE, /* pc_relative */
408 complain_overflow_signed, /* complain_on_overflow */
409 ppc64_elf_branch_reloc, /* special_function */
410 "R_PPC64_REL14", /* name */
411 FALSE, /* partial_inplace */
413 0x0000fffc, /* dst_mask */
414 TRUE), /* pcrel_offset */
416 /* A relative 16 bit branch. Bit 10 should be set to indicate that
417 the branch is expected to be taken. The lower two bits must be
419 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 ppc64_elf_brtaken_reloc, /* special_function */
427 "R_PPC64_REL14_BRTAKEN", /* name */
428 FALSE, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is not expected to be taken. The lower two bits must
436 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_signed, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc, /* special_function */
444 "R_PPC64_REL14_BRNTAKEN",/* name */
445 FALSE, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
452 HOWTO (R_PPC64_GOT16, /* type */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE, /* pc_relative */
458 complain_overflow_signed, /* complain_on_overflow */
459 ppc64_elf_unhandled_reloc, /* special_function */
460 "R_PPC64_GOT16", /* name */
461 FALSE, /* partial_inplace */
463 0xffff, /* dst_mask */
464 FALSE), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
468 HOWTO (R_PPC64_GOT16_LO, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc, /* special_function */
476 "R_PPC64_GOT16_LO", /* name */
477 FALSE, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_HI, /* type */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_dont,/* complain_on_overflow */
491 ppc64_elf_unhandled_reloc, /* special_function */
492 "R_PPC64_GOT16_HI", /* name */
493 FALSE, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HA, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_dont,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc, /* special_function */
508 "R_PPC64_GOT16_HA", /* name */
509 FALSE, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* This is used only by the dynamic linker. The symbol should exist
515 both in the object being run and in some shared library. The
516 dynamic linker copies the data addressed by the symbol from the
517 shared library into the object, because the object being
518 run has to have the data at some particular address. */
519 HOWTO (R_PPC64_COPY, /* type */
521 0, /* this one is variable size */
523 FALSE, /* pc_relative */
525 complain_overflow_dont, /* complain_on_overflow */
526 ppc64_elf_unhandled_reloc, /* special_function */
527 "R_PPC64_COPY", /* name */
528 FALSE, /* partial_inplace */
531 FALSE), /* pcrel_offset */
533 /* Like R_PPC64_ADDR64, but used when setting global offset table
535 HOWTO (R_PPC64_GLOB_DAT, /* type */
537 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
539 FALSE, /* pc_relative */
541 complain_overflow_dont, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc, /* special_function */
543 "R_PPC64_GLOB_DAT", /* name */
544 FALSE, /* partial_inplace */
546 ONES (64), /* dst_mask */
547 FALSE), /* pcrel_offset */
549 /* Created by the link editor. Marks a procedure linkage table
550 entry for a symbol. */
551 HOWTO (R_PPC64_JMP_SLOT, /* type */
553 0, /* size (0 = byte, 1 = short, 2 = long) */
555 FALSE, /* pc_relative */
557 complain_overflow_dont, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc, /* special_function */
559 "R_PPC64_JMP_SLOT", /* name */
560 FALSE, /* partial_inplace */
563 FALSE), /* pcrel_offset */
565 /* Used only by the dynamic linker. When the object is run, this
566 doubleword64 is set to the load address of the object, plus the
568 HOWTO (R_PPC64_RELATIVE, /* type */
570 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_RELATIVE", /* name */
577 FALSE, /* partial_inplace */
579 ONES (64), /* dst_mask */
580 FALSE), /* pcrel_offset */
582 /* Like R_PPC64_ADDR32, but may be unaligned. */
583 HOWTO (R_PPC64_UADDR32, /* type */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
587 FALSE, /* pc_relative */
589 complain_overflow_bitfield, /* complain_on_overflow */
590 bfd_elf_generic_reloc, /* special_function */
591 "R_PPC64_UADDR32", /* name */
592 FALSE, /* partial_inplace */
594 0xffffffff, /* dst_mask */
595 FALSE), /* pcrel_offset */
597 /* Like R_PPC64_ADDR16, but may be unaligned. */
598 HOWTO (R_PPC64_UADDR16, /* type */
600 1, /* size (0 = byte, 1 = short, 2 = long) */
602 FALSE, /* pc_relative */
604 complain_overflow_bitfield, /* complain_on_overflow */
605 bfd_elf_generic_reloc, /* special_function */
606 "R_PPC64_UADDR16", /* name */
607 FALSE, /* partial_inplace */
609 0xffff, /* dst_mask */
610 FALSE), /* pcrel_offset */
612 /* 32-bit PC relative. */
613 HOWTO (R_PPC64_REL32, /* type */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
617 TRUE, /* pc_relative */
619 /* FIXME: Verify. Was complain_overflow_bitfield. */
620 complain_overflow_signed, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_REL32", /* name */
623 FALSE, /* partial_inplace */
625 0xffffffff, /* dst_mask */
626 TRUE), /* pcrel_offset */
628 /* 32-bit relocation to the symbol's procedure linkage table. */
629 HOWTO (R_PPC64_PLT32, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE, /* pc_relative */
635 complain_overflow_bitfield, /* complain_on_overflow */
636 ppc64_elf_unhandled_reloc, /* special_function */
637 "R_PPC64_PLT32", /* name */
638 FALSE, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
643 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
644 FIXME: R_PPC64_PLTREL32 not supported. */
645 HOWTO (R_PPC64_PLTREL32, /* type */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
649 TRUE, /* pc_relative */
651 complain_overflow_signed, /* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_PPC64_PLTREL32", /* name */
654 FALSE, /* partial_inplace */
656 0xffffffff, /* dst_mask */
657 TRUE), /* pcrel_offset */
659 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
661 HOWTO (R_PPC64_PLT16_LO, /* type */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE, /* pc_relative */
667 complain_overflow_dont, /* complain_on_overflow */
668 ppc64_elf_unhandled_reloc, /* special_function */
669 "R_PPC64_PLT16_LO", /* name */
670 FALSE, /* partial_inplace */
672 0xffff, /* dst_mask */
673 FALSE), /* pcrel_offset */
675 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
677 HOWTO (R_PPC64_PLT16_HI, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE, /* pc_relative */
683 complain_overflow_dont, /* complain_on_overflow */
684 ppc64_elf_unhandled_reloc, /* special_function */
685 "R_PPC64_PLT16_HI", /* name */
686 FALSE, /* partial_inplace */
688 0xffff, /* dst_mask */
689 FALSE), /* pcrel_offset */
691 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
693 HOWTO (R_PPC64_PLT16_HA, /* type */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
697 FALSE, /* pc_relative */
699 complain_overflow_dont, /* complain_on_overflow */
700 ppc64_elf_unhandled_reloc, /* special_function */
701 "R_PPC64_PLT16_HA", /* name */
702 FALSE, /* partial_inplace */
704 0xffff, /* dst_mask */
705 FALSE), /* pcrel_offset */
707 /* 16-bit section relative relocation. */
708 HOWTO (R_PPC64_SECTOFF, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE, /* pc_relative */
714 complain_overflow_bitfield, /* complain_on_overflow */
715 ppc64_elf_sectoff_reloc, /* special_function */
716 "R_PPC64_SECTOFF", /* name */
717 FALSE, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE), /* pcrel_offset */
722 /* Like R_PPC64_SECTOFF, but no overflow warning. */
723 HOWTO (R_PPC64_SECTOFF_LO, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_dont, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc, /* special_function */
731 "R_PPC64_SECTOFF_LO", /* name */
732 FALSE, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC64_SECTOFF_HI, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE, /* pc_relative */
744 complain_overflow_dont, /* complain_on_overflow */
745 ppc64_elf_sectoff_reloc, /* special_function */
746 "R_PPC64_SECTOFF_HI", /* name */
747 FALSE, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE), /* pcrel_offset */
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HA, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE, /* pc_relative */
759 complain_overflow_dont, /* complain_on_overflow */
760 ppc64_elf_sectoff_ha_reloc, /* special_function */
761 "R_PPC64_SECTOFF_HA", /* name */
762 FALSE, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE), /* pcrel_offset */
767 /* Like R_PPC64_REL24 without touching the two least significant bits. */
768 HOWTO (R_PPC64_REL30, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 TRUE, /* pc_relative */
774 complain_overflow_dont, /* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
776 "R_PPC64_REL30", /* name */
777 FALSE, /* partial_inplace */
779 0xfffffffc, /* dst_mask */
780 TRUE), /* pcrel_offset */
782 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
784 /* A standard 64-bit relocation. */
785 HOWTO (R_PPC64_ADDR64, /* type */
787 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 FALSE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC64_ADDR64", /* name */
794 FALSE, /* partial_inplace */
796 ONES (64), /* dst_mask */
797 FALSE), /* pcrel_offset */
799 /* The bits 32-47 of an address. */
800 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE, /* pc_relative */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_PPC64_ADDR16_HIGHER", /* name */
809 FALSE, /* partial_inplace */
811 0xffff, /* dst_mask */
812 FALSE), /* pcrel_offset */
814 /* The bits 32-47 of an address, plus 1 if the contents of the low
815 16 bits, treated as a signed number, is negative. */
816 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 FALSE, /* pc_relative */
822 complain_overflow_dont, /* complain_on_overflow */
823 ppc64_elf_ha_reloc, /* special_function */
824 "R_PPC64_ADDR16_HIGHERA", /* name */
825 FALSE, /* partial_inplace */
827 0xffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
830 /* The bits 48-63 of an address. */
831 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC64_ADDR16_HIGHEST", /* name */
840 FALSE, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* The bits 48-63 of an address, plus 1 if the contents of the low
846 16 bits, treated as a signed number, is negative. */
847 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE, /* pc_relative */
853 complain_overflow_dont, /* complain_on_overflow */
854 ppc64_elf_ha_reloc, /* special_function */
855 "R_PPC64_ADDR16_HIGHESTA", /* name */
856 FALSE, /* partial_inplace */
858 0xffff, /* dst_mask */
859 FALSE), /* pcrel_offset */
861 /* Like ADDR64, but may be unaligned. */
862 HOWTO (R_PPC64_UADDR64, /* type */
864 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
866 FALSE, /* pc_relative */
868 complain_overflow_dont, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
870 "R_PPC64_UADDR64", /* name */
871 FALSE, /* partial_inplace */
873 ONES (64), /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* 64-bit relative relocation. */
877 HOWTO (R_PPC64_REL64, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 TRUE, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_REL64", /* name */
886 FALSE, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 TRUE), /* pcrel_offset */
891 /* 64-bit relocation to the symbol's procedure linkage table. */
892 HOWTO (R_PPC64_PLT64, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 FALSE, /* pc_relative */
898 complain_overflow_dont, /* complain_on_overflow */
899 ppc64_elf_unhandled_reloc, /* special_function */
900 "R_PPC64_PLT64", /* name */
901 FALSE, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 FALSE), /* pcrel_offset */
906 /* 64-bit PC relative relocation to the symbol's procedure linkage
908 /* FIXME: R_PPC64_PLTREL64 not supported. */
909 HOWTO (R_PPC64_PLTREL64, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 TRUE, /* pc_relative */
915 complain_overflow_dont, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc, /* special_function */
917 "R_PPC64_PLTREL64", /* name */
918 FALSE, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 TRUE), /* pcrel_offset */
923 /* 16 bit TOC-relative relocation. */
925 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
926 HOWTO (R_PPC64_TOC16, /* type */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc64_elf_toc_reloc, /* special_function */
934 "R_PPC64_TOC16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation without overflow. */
942 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
943 HOWTO (R_PPC64_TOC16_LO, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_dont, /* complain_on_overflow */
950 ppc64_elf_toc_reloc, /* special_function */
951 "R_PPC64_TOC16_LO", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation, high 16 bits. */
959 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_HI, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE, /* pc_relative */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_toc_reloc, /* special_function */
968 "R_PPC64_TOC16_HI", /* name */
969 FALSE, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
975 contents of the low 16 bits, treated as a signed number, is
978 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
979 HOWTO (R_PPC64_TOC16_HA, /* type */
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_dont, /* complain_on_overflow */
986 ppc64_elf_toc_ha_reloc, /* special_function */
987 "R_PPC64_TOC16_HA", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* 64-bit relocation; insert value of TOC base (.TOC.). */
995 /* R_PPC64_TOC 51 doubleword64 .TOC. */
996 HOWTO (R_PPC64_TOC, /* type */
998 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_bitfield, /* complain_on_overflow */
1003 ppc64_elf_toc64_reloc, /* special_function */
1004 "R_PPC64_TOC", /* name */
1005 FALSE, /* partial_inplace */
1007 ONES (64), /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like R_PPC64_GOT16, but also informs the link editor that the
1011 value to relocate may (!) refer to a PLT entry which the link
1012 editor (a) may replace with the symbol value. If the link editor
1013 is unable to fully resolve the symbol, it may (b) create a PLT
1014 entry and store the address to the new PLT entry in the GOT.
1015 This permits lazy resolution of function symbols at run time.
1016 The link editor may also skip all of this and just (c) emit a
1017 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1018 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1019 HOWTO (R_PPC64_PLTGOT16, /* type */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE, /* pc_relative */
1025 complain_overflow_signed, /* complain_on_overflow */
1026 ppc64_elf_unhandled_reloc, /* special_function */
1027 "R_PPC64_PLTGOT16", /* name */
1028 FALSE, /* partial_inplace */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1033 /* Like R_PPC64_PLTGOT16, but without overflow. */
1034 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1035 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc64_elf_unhandled_reloc, /* special_function */
1043 "R_PPC64_PLTGOT16_LO", /* name */
1044 FALSE, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1050 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 FALSE, /* pc_relative */
1057 complain_overflow_dont, /* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HI", /* name */
1060 FALSE, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1065 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1066 1 if the contents of the low 16 bits, treated as a signed number,
1068 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE, /* pc_relative */
1075 complain_overflow_dont,/* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_HA", /* name */
1078 FALSE, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1083 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1084 HOWTO (R_PPC64_ADDR16_DS, /* type */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE, /* pc_relative */
1090 complain_overflow_bitfield, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
1092 "R_PPC64_ADDR16_DS", /* name */
1093 FALSE, /* partial_inplace */
1095 0xfffc, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE, /* pc_relative */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_PPC64_ADDR16_LO_DS",/* name */
1108 FALSE, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1113 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_GOT16_DS, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE, /* pc_relative */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc, /* special_function */
1122 "R_PPC64_GOT16_DS", /* name */
1123 FALSE, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE, /* pc_relative */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_GOT16_LO_DS", /* name */
1138 FALSE, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1143 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE, /* pc_relative */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc, /* special_function */
1152 "R_PPC64_PLT16_LO_DS", /* name */
1153 FALSE, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1158 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE, /* pc_relative */
1165 complain_overflow_bitfield, /* complain_on_overflow */
1166 ppc64_elf_sectoff_reloc, /* special_function */
1167 "R_PPC64_SECTOFF_DS", /* name */
1168 FALSE, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE, /* pc_relative */
1180 complain_overflow_dont, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc, /* special_function */
1182 "R_PPC64_SECTOFF_LO_DS",/* name */
1183 FALSE, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1188 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_TOC16_DS, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE, /* pc_relative */
1195 complain_overflow_signed, /* complain_on_overflow */
1196 ppc64_elf_toc_reloc, /* special_function */
1197 "R_PPC64_TOC16_DS", /* name */
1198 FALSE, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE, /* pc_relative */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc, /* special_function */
1212 "R_PPC64_TOC16_LO_DS", /* name */
1213 FALSE, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1218 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1219 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1220 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_signed, /* complain_on_overflow */
1227 ppc64_elf_unhandled_reloc, /* special_function */
1228 "R_PPC64_PLTGOT16_DS", /* name */
1229 FALSE, /* partial_inplace */
1231 0xfffc, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1235 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1236 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE, /* pc_relative */
1242 complain_overflow_dont, /* complain_on_overflow */
1243 ppc64_elf_unhandled_reloc, /* special_function */
1244 "R_PPC64_PLTGOT16_LO_DS",/* name */
1245 FALSE, /* partial_inplace */
1247 0xfffc, /* dst_mask */
1248 FALSE), /* pcrel_offset */
1250 /* Marker relocs for TLS. */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE, /* pc_relative */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_PPC64_TLS", /* name */
1260 FALSE, /* partial_inplace */
1263 FALSE), /* pcrel_offset */
1265 HOWTO (R_PPC64_TLSGD,
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont, /* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC64_TLSGD", /* name */
1274 FALSE, /* partial_inplace */
1277 FALSE), /* pcrel_offset */
1279 HOWTO (R_PPC64_TLSLD,
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLSLD", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TOCSAVE,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TOCSAVE", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 /* Computes the load module index of the load module that contains the
1308 definition of its TLS sym. */
1309 HOWTO (R_PPC64_DTPMOD64,
1311 4, /* size (0 = byte, 1 = short, 2 = long) */
1313 FALSE, /* pc_relative */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc, /* special_function */
1317 "R_PPC64_DTPMOD64", /* name */
1318 FALSE, /* partial_inplace */
1320 ONES (64), /* dst_mask */
1321 FALSE), /* pcrel_offset */
1323 /* Computes a dtv-relative displacement, the difference between the value
1324 of sym+add and the base address of the thread-local storage block that
1325 contains the definition of sym, minus 0x8000. */
1326 HOWTO (R_PPC64_DTPREL64,
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL64", /* name */
1335 FALSE, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 /* A 16 bit dtprel reloc. */
1341 HOWTO (R_PPC64_DTPREL16,
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_signed, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16", /* name */
1350 FALSE, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1355 /* Like DTPREL16, but no overflow. */
1356 HOWTO (R_PPC64_DTPREL16_LO,
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_LO", /* name */
1365 FALSE, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1370 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HI,
1372 16, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE, /* pc_relative */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HI", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HA,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HA", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HIGHER,
1402 32, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_dont, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HIGHER", /* name */
1410 FALSE, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1417 32, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE, /* pc_relative */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_HIGHERA", /* name */
1425 FALSE, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1432 48, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHEST", /* name */
1440 FALSE, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1460 /* Like DTPREL16, but for insns with a DS field. */
1461 HOWTO (R_PPC64_DTPREL16_DS,
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_DS", /* name */
1470 FALSE, /* partial_inplace */
1472 0xfffc, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1475 /* Like DTPREL16_DS, but no overflow. */
1476 HOWTO (R_PPC64_DTPREL16_LO_DS,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_LO_DS", /* name */
1485 FALSE, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1490 /* Computes a tp-relative displacement, the difference between the value of
1491 sym+add and the value of the thread pointer (r13). */
1492 HOWTO (R_PPC64_TPREL64,
1494 4, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL64", /* name */
1501 FALSE, /* partial_inplace */
1503 ONES (64), /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* A 16 bit tprel reloc. */
1507 HOWTO (R_PPC64_TPREL16,
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_signed, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16", /* name */
1516 FALSE, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Like TPREL16, but no overflow. */
1522 HOWTO (R_PPC64_TPREL16_LO,
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_LO", /* name */
1531 FALSE, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* Like TPREL16_LO, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HI,
1538 16, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE, /* pc_relative */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HI", /* name */
1546 FALSE, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1551 /* Like TPREL16_HI, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HA,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE, /* pc_relative */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HA", /* name */
1561 FALSE, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1566 /* Like TPREL16_HI, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HIGHER,
1568 32, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE, /* pc_relative */
1573 complain_overflow_dont, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HIGHER", /* name */
1576 FALSE, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1581 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHERA,
1583 32, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE, /* pc_relative */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_HIGHERA", /* name */
1591 FALSE, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHEST,
1598 48, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE, /* pc_relative */
1603 complain_overflow_dont, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_TPREL16_HIGHEST", /* name */
1606 FALSE, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1611 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE, /* pc_relative */
1618 complain_overflow_dont, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc, /* special_function */
1620 "R_PPC64_TPREL16_HIGHESTA", /* name */
1621 FALSE, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1626 /* Like TPREL16, but for insns with a DS field. */
1627 HOWTO (R_PPC64_TPREL16_DS,
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE, /* pc_relative */
1633 complain_overflow_signed, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_DS", /* name */
1636 FALSE, /* partial_inplace */
1638 0xfffc, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1641 /* Like TPREL16_DS, but no overflow. */
1642 HOWTO (R_PPC64_TPREL16_LO_DS,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE, /* pc_relative */
1648 complain_overflow_dont, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_LO_DS", /* name */
1651 FALSE, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1658 to the first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSGD16,
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_signed, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_GOT_TLSGD16", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* Like GOT_TLSGD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_GOT_TLSGD16_LO", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1690 16, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE, /* pc_relative */
1695 complain_overflow_dont, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc, /* special_function */
1697 "R_PPC64_GOT_TLSGD16_HI", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HA", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1718 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1719 with values (sym+add)@dtpmod and zero, and computes the offset to the
1720 first entry relative to the TOC base (r2). */
1721 HOWTO (R_PPC64_GOT_TLSLD16,
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE, /* pc_relative */
1727 complain_overflow_signed, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc, /* special_function */
1729 "R_PPC64_GOT_TLSLD16", /* name */
1730 FALSE, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE), /* pcrel_offset */
1735 /* Like GOT_TLSLD16, but no overflow. */
1736 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE, /* pc_relative */
1742 complain_overflow_dont, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSLD16_LO", /* name */
1745 FALSE, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1750 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1752 16, /* rightshift */
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE, /* pc_relative */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc, /* special_function */
1759 "R_PPC64_GOT_TLSLD16_HI", /* name */
1760 FALSE, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE, /* pc_relative */
1772 complain_overflow_dont, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HA", /* name */
1775 FALSE, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1781 the offset to the entry relative to the TOC base (r2). */
1782 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 FALSE, /* pc_relative */
1788 complain_overflow_signed, /* complain_on_overflow */
1789 ppc64_elf_unhandled_reloc, /* special_function */
1790 "R_PPC64_GOT_DTPREL16_DS", /* name */
1791 FALSE, /* partial_inplace */
1793 0xfffc, /* dst_mask */
1794 FALSE), /* pcrel_offset */
1796 /* Like GOT_DTPREL16_DS, but no overflow. */
1797 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE, /* pc_relative */
1803 complain_overflow_dont, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1806 FALSE, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1813 16, /* rightshift */
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE, /* pc_relative */
1818 complain_overflow_dont, /* complain_on_overflow */
1819 ppc64_elf_unhandled_reloc, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_HI", /* name */
1821 FALSE, /* partial_inplace */
1823 0xffff, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE, /* pc_relative */
1833 complain_overflow_dont, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HA", /* name */
1836 FALSE, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE), /* pcrel_offset */
1841 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1842 offset to the entry relative to the TOC base (r2). */
1843 HOWTO (R_PPC64_GOT_TPREL16_DS,
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_signed, /* complain_on_overflow */
1850 ppc64_elf_unhandled_reloc, /* special_function */
1851 "R_PPC64_GOT_TPREL16_DS", /* name */
1852 FALSE, /* partial_inplace */
1854 0xfffc, /* dst_mask */
1855 FALSE), /* pcrel_offset */
1857 /* Like GOT_TPREL16_DS, but no overflow. */
1858 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE, /* pc_relative */
1864 complain_overflow_dont, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc, /* special_function */
1866 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1867 FALSE, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE), /* pcrel_offset */
1872 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1873 HOWTO (R_PPC64_GOT_TPREL16_HI,
1874 16, /* rightshift */
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1877 FALSE, /* pc_relative */
1879 complain_overflow_dont, /* complain_on_overflow */
1880 ppc64_elf_unhandled_reloc, /* special_function */
1881 "R_PPC64_GOT_TPREL16_HI", /* name */
1882 FALSE, /* partial_inplace */
1884 0xffff, /* dst_mask */
1885 FALSE), /* pcrel_offset */
1887 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HA,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE, /* pc_relative */
1894 complain_overflow_dont, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HA", /* name */
1897 FALSE, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE), /* pcrel_offset */
1902 HOWTO (R_PPC64_JMP_IREL, /* type */
1904 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1906 FALSE, /* pc_relative */
1908 complain_overflow_dont, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc, /* special_function */
1910 "R_PPC64_JMP_IREL", /* name */
1911 FALSE, /* partial_inplace */
1914 FALSE), /* pcrel_offset */
1916 HOWTO (R_PPC64_IRELATIVE, /* type */
1918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_dont, /* complain_on_overflow */
1923 bfd_elf_generic_reloc, /* special_function */
1924 "R_PPC64_IRELATIVE", /* name */
1925 FALSE, /* partial_inplace */
1927 ONES (64), /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* A 16 bit relative relocation. */
1931 HOWTO (R_PPC64_REL16, /* type */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 TRUE, /* pc_relative */
1937 complain_overflow_bitfield, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 "R_PPC64_REL16", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 TRUE), /* pcrel_offset */
1945 /* A 16 bit relative relocation without overflow. */
1946 HOWTO (R_PPC64_REL16_LO, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE, /* pc_relative */
1952 complain_overflow_dont,/* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_REL16_LO", /* name */
1955 FALSE, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE), /* pcrel_offset */
1960 /* The high order 16 bits of a relative address. */
1961 HOWTO (R_PPC64_REL16_HI, /* type */
1962 16, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1965 TRUE, /* pc_relative */
1967 complain_overflow_dont, /* complain_on_overflow */
1968 bfd_elf_generic_reloc, /* special_function */
1969 "R_PPC64_REL16_HI", /* name */
1970 FALSE, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address, plus 1 if the contents of
1976 the low 16 bits, treated as a signed number, is negative. */
1977 HOWTO (R_PPC64_REL16_HA, /* type */
1978 16, /* rightshift */
1979 1, /* size (0 = byte, 1 = short, 2 = long) */
1981 TRUE, /* pc_relative */
1983 complain_overflow_dont, /* complain_on_overflow */
1984 ppc64_elf_ha_reloc, /* special_function */
1985 "R_PPC64_REL16_HA", /* name */
1986 FALSE, /* partial_inplace */
1988 0xffff, /* dst_mask */
1989 TRUE), /* pcrel_offset */
1991 /* GNU extension to record C++ vtable hierarchy. */
1992 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1994 0, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE, /* pc_relative */
1998 complain_overflow_dont, /* complain_on_overflow */
1999 NULL, /* special_function */
2000 "R_PPC64_GNU_VTINHERIT", /* name */
2001 FALSE, /* partial_inplace */
2004 FALSE), /* pcrel_offset */
2006 /* GNU extension to record C++ vtable member usage. */
2007 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2009 0, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 NULL, /* special_function */
2015 "R_PPC64_GNU_VTENTRY", /* name */
2016 FALSE, /* partial_inplace */
2019 FALSE), /* pcrel_offset */
2023 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2027 ppc_howto_init (void)
2029 unsigned int i, type;
2032 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2035 type = ppc64_elf_howto_raw[i].type;
2036 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2037 / sizeof (ppc64_elf_howto_table[0])));
2038 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2042 static reloc_howto_type *
2043 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2044 bfd_reloc_code_real_type code)
2046 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2048 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2049 /* Initialize howto table if needed. */
2057 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2059 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2061 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2063 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2065 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2067 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2069 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2071 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2073 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2075 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2077 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2079 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2081 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2083 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2085 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2087 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2089 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2091 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2093 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2095 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2097 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2099 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2101 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2103 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2105 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2107 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2109 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2111 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2113 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2115 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2117 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2119 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2121 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2123 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2125 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2127 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2129 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2131 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2133 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2135 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2137 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2139 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2141 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2143 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2145 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2147 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2149 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2151 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2153 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2155 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2157 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2159 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2161 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2163 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2165 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2167 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2169 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2171 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2173 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2175 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2177 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2179 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2181 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2183 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2185 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2187 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2189 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2191 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2193 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2195 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2197 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2199 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2201 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2203 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2205 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2207 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2209 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2211 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2213 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2215 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2217 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2219 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2221 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2223 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2225 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2227 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2229 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2231 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2233 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2235 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2237 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2239 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2241 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2243 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2245 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2247 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2249 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2251 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2253 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2255 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2257 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2259 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2261 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2263 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2265 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2267 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2269 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2273 return ppc64_elf_howto_table[r];
2276 static reloc_howto_type *
2277 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2283 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2285 if (ppc64_elf_howto_raw[i].name != NULL
2286 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2287 return &ppc64_elf_howto_raw[i];
2292 /* Set the howto pointer for a PowerPC ELF reloc. */
2295 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2296 Elf_Internal_Rela *dst)
2300 /* Initialize howto table if needed. */
2301 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2304 type = ELF64_R_TYPE (dst->r_info);
2305 if (type >= (sizeof (ppc64_elf_howto_table)
2306 / sizeof (ppc64_elf_howto_table[0])))
2308 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2310 type = R_PPC64_NONE;
2312 cache_ptr->howto = ppc64_elf_howto_table[type];
2315 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2317 static bfd_reloc_status_type
2318 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2319 void *data, asection *input_section,
2320 bfd *output_bfd, char **error_message)
2322 /* If this is a relocatable link (output_bfd test tells us), just
2323 call the generic function. Any adjustment will be done at final
2325 if (output_bfd != NULL)
2326 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2327 input_section, output_bfd, error_message);
2329 /* Adjust the addend for sign extension of the low 16 bits.
2330 We won't actually be using the low 16 bits, so trashing them
2332 reloc_entry->addend += 0x8000;
2333 return bfd_reloc_continue;
2336 static bfd_reloc_status_type
2337 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2341 if (output_bfd != NULL)
2342 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2343 input_section, output_bfd, error_message);
2345 if (strcmp (symbol->section->name, ".opd") == 0
2346 && (symbol->section->owner->flags & DYNAMIC) == 0)
2348 bfd_vma dest = opd_entry_value (symbol->section,
2349 symbol->value + reloc_entry->addend,
2351 if (dest != (bfd_vma) -1)
2352 reloc_entry->addend = dest - (symbol->value
2353 + symbol->section->output_section->vma
2354 + symbol->section->output_offset);
2356 return bfd_reloc_continue;
2359 static bfd_reloc_status_type
2360 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2361 void *data, asection *input_section,
2362 bfd *output_bfd, char **error_message)
2365 enum elf_ppc64_reloc_type r_type;
2366 bfd_size_type octets;
2367 /* Assume 'at' branch hints. */
2368 bfd_boolean is_isa_v2 = TRUE;
2370 /* If this is a relocatable link (output_bfd test tells us), just
2371 call the generic function. Any adjustment will be done at final
2373 if (output_bfd != NULL)
2374 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2375 input_section, output_bfd, error_message);
2377 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2378 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2379 insn &= ~(0x01 << 21);
2380 r_type = reloc_entry->howto->type;
2381 if (r_type == R_PPC64_ADDR14_BRTAKEN
2382 || r_type == R_PPC64_REL14_BRTAKEN)
2383 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2387 /* Set 'a' bit. This is 0b00010 in BO field for branch
2388 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2389 for branch on CTR insns (BO == 1a00t or 1a01t). */
2390 if ((insn & (0x14 << 21)) == (0x04 << 21))
2392 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2402 if (!bfd_is_com_section (symbol->section))
2403 target = symbol->value;
2404 target += symbol->section->output_section->vma;
2405 target += symbol->section->output_offset;
2406 target += reloc_entry->addend;
2408 from = (reloc_entry->address
2409 + input_section->output_offset
2410 + input_section->output_section->vma);
2412 /* Invert 'y' bit if not the default. */
2413 if ((bfd_signed_vma) (target - from) < 0)
2416 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2418 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2419 input_section, output_bfd, error_message);
2422 static bfd_reloc_status_type
2423 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2424 void *data, asection *input_section,
2425 bfd *output_bfd, char **error_message)
2427 /* If this is a relocatable link (output_bfd test tells us), just
2428 call the generic function. Any adjustment will be done at final
2430 if (output_bfd != NULL)
2431 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2432 input_section, output_bfd, error_message);
2434 /* Subtract the symbol section base address. */
2435 reloc_entry->addend -= symbol->section->output_section->vma;
2436 return bfd_reloc_continue;
2439 static bfd_reloc_status_type
2440 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2441 void *data, asection *input_section,
2442 bfd *output_bfd, char **error_message)
2444 /* If this is a relocatable link (output_bfd test tells us), just
2445 call the generic function. Any adjustment will be done at final
2447 if (output_bfd != NULL)
2448 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2449 input_section, output_bfd, error_message);
2451 /* Subtract the symbol section base address. */
2452 reloc_entry->addend -= symbol->section->output_section->vma;
2454 /* Adjust the addend for sign extension of the low 16 bits. */
2455 reloc_entry->addend += 0x8000;
2456 return bfd_reloc_continue;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd != NULL)
2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2471 input_section, output_bfd, error_message);
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2475 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2479 return bfd_reloc_continue;
2482 static bfd_reloc_status_type
2483 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2484 void *data, asection *input_section,
2485 bfd *output_bfd, char **error_message)
2489 /* If this is a relocatable link (output_bfd test tells us), just
2490 call the generic function. Any adjustment will be done at final
2492 if (output_bfd != NULL)
2493 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2494 input_section, output_bfd, error_message);
2496 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2498 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2500 /* Subtract the TOC base address. */
2501 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2503 /* Adjust the addend for sign extension of the low 16 bits. */
2504 reloc_entry->addend += 0x8000;
2505 return bfd_reloc_continue;
2508 static bfd_reloc_status_type
2509 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2510 void *data, asection *input_section,
2511 bfd *output_bfd, char **error_message)
2514 bfd_size_type octets;
2516 /* If this is a relocatable link (output_bfd test tells us), just
2517 call the generic function. Any adjustment will be done at final
2519 if (output_bfd != NULL)
2520 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2521 input_section, output_bfd, error_message);
2523 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2525 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2527 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2528 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2529 return bfd_reloc_ok;
2532 static bfd_reloc_status_type
2533 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2534 void *data, asection *input_section,
2535 bfd *output_bfd, char **error_message)
2537 /* If this is a relocatable link (output_bfd test tells us), just
2538 call the generic function. Any adjustment will be done at final
2540 if (output_bfd != NULL)
2541 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2542 input_section, output_bfd, error_message);
2544 if (error_message != NULL)
2546 static char buf[60];
2547 sprintf (buf, "generic linker can't handle %s",
2548 reloc_entry->howto->name);
2549 *error_message = buf;
2551 return bfd_reloc_dangerous;
2554 /* Track GOT entries needed for a given symbol. We might need more
2555 than one got entry per symbol. */
2558 struct got_entry *next;
2560 /* The symbol addend that we'll be placing in the GOT. */
2563 /* Unlike other ELF targets, we use separate GOT entries for the same
2564 symbol referenced from different input files. This is to support
2565 automatic multiple TOC/GOT sections, where the TOC base can vary
2566 from one input file to another. After partitioning into TOC groups
2567 we merge entries within the group.
2569 Point to the BFD owning this GOT entry. */
2572 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2573 TLS_TPREL or TLS_DTPREL for tls entries. */
2574 unsigned char tls_type;
2576 /* Non-zero if got.ent points to real entry. */
2577 unsigned char is_indirect;
2579 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2582 bfd_signed_vma refcount;
2584 struct got_entry *ent;
2588 /* The same for PLT. */
2591 struct plt_entry *next;
2597 bfd_signed_vma refcount;
2602 struct ppc64_elf_obj_tdata
2604 struct elf_obj_tdata elf;
2606 /* Shortcuts to dynamic linker sections. */
2610 /* Used during garbage collection. We attach global symbols defined
2611 on removed .opd entries to this section so that the sym is removed. */
2612 asection *deleted_section;
2614 /* TLS local dynamic got entry handling. Support for multiple GOT
2615 sections means we potentially need one of these for each input bfd. */
2616 struct got_entry tlsld_got;
2618 /* A copy of relocs before they are modified for --emit-relocs. */
2619 Elf_Internal_Rela *opd_relocs;
2621 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2622 the reloc to be in the range -32768 to 32767. */
2623 unsigned int has_small_toc_reloc : 1;
2625 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2626 instruction not one we handle. */
2627 unsigned int unexpected_toc_insn : 1;
2630 #define ppc64_elf_tdata(bfd) \
2631 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2633 #define ppc64_tlsld_got(bfd) \
2634 (&ppc64_elf_tdata (bfd)->tlsld_got)
2636 #define is_ppc64_elf(bfd) \
2637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2638 && elf_object_id (bfd) == PPC64_ELF_DATA)
2640 /* Override the generic function because we store some extras. */
2643 ppc64_elf_mkobject (bfd *abfd)
2645 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2649 /* Fix bad default arch selected for a 64 bit input bfd when the
2650 default is 32 bit. */
2653 ppc64_elf_object_p (bfd *abfd)
2655 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2657 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2659 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2661 /* Relies on arch after 32 bit default being 64 bit default. */
2662 abfd->arch_info = abfd->arch_info->next;
2663 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2669 /* Support for core dump NOTE sections. */
2672 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2674 size_t offset, size;
2676 if (note->descsz != 504)
2680 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2683 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
2689 /* Make a ".reg/999" section. */
2690 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2691 size, note->descpos + offset);
2695 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2697 if (note->descsz != 136)
2700 elf_tdata (abfd)->core_pid
2701 = bfd_get_32 (abfd, note->descdata + 24);
2702 elf_tdata (abfd)->core_program
2703 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2704 elf_tdata (abfd)->core_command
2705 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2711 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2724 va_start (ap, note_type);
2725 memset (data, 0, sizeof (data));
2726 strncpy (data + 40, va_arg (ap, const char *), 16);
2727 strncpy (data + 56, va_arg (ap, const char *), 80);
2729 return elfcore_write_note (abfd, buf, bufsiz,
2730 "CORE", note_type, data, sizeof (data));
2741 va_start (ap, note_type);
2742 memset (data, 0, 112);
2743 pid = va_arg (ap, long);
2744 bfd_put_32 (abfd, pid, data + 32);
2745 cursig = va_arg (ap, int);
2746 bfd_put_16 (abfd, cursig, data + 12);
2747 greg = va_arg (ap, const void *);
2748 memcpy (data + 112, greg, 384);
2749 memset (data + 496, 0, 8);
2751 return elfcore_write_note (abfd, buf, bufsiz,
2752 "CORE", note_type, data, sizeof (data));
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2767 { NULL, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type {
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection **func_sec;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2816 if (!sec->used_by_bfd)
2818 struct _ppc64_elf_section_data *sdata;
2819 bfd_size_type amt = sizeof (*sdata);
2821 sdata = bfd_zalloc (abfd, amt);
2824 sec->used_by_bfd = sdata;
2827 return _bfd_elf_new_section_hook (abfd, sec);
2830 static struct _opd_sec_data *
2831 get_opd_info (asection * sec)
2834 && ppc64_elf_section_data (sec) != NULL
2835 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2836 return &ppc64_elf_section_data (sec)->u.opd;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap, const void *bp)
2848 const asymbol *a = * (const asymbol **) ap;
2849 const asymbol *b = * (const asymbol **) bp;
2851 /* Section symbols first. */
2852 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2854 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2857 /* then .opd symbols. */
2858 if (strcmp (a->section->name, ".opd") == 0
2859 && strcmp (b->section->name, ".opd") != 0)
2861 if (strcmp (a->section->name, ".opd") != 0
2862 && strcmp (b->section->name, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 == (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2872 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 != (SEC_CODE | SEC_ALLOC)
2874 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 == (SEC_CODE | SEC_ALLOC))
2878 if (synthetic_relocatable)
2880 if (a->section->id < b->section->id)
2883 if (a->section->id > b->section->id)
2887 if (a->value + a->section->vma < b->value + b->section->vma)
2890 if (a->value + a->section->vma > b->value + b->section->vma)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2898 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2901 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2904 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2907 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2910 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2913 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2916 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2933 mid = (lo + hi) >> 1;
2934 if (syms[mid]->value + syms[mid]->section->vma < value)
2936 else if (syms[mid]->value + syms[mid]->section->vma > value)
2946 mid = (lo + hi) >> 1;
2947 if (syms[mid]->section->id < id)
2949 else if (syms[mid]->section->id > id)
2951 else if (syms[mid]->value < value)
2953 else if (syms[mid]->value > value)
2963 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2965 bfd_vma vma = *(bfd_vma *) ptr;
2966 return ((section->flags & SEC_ALLOC) != 0
2967 && section->vma <= vma
2968 && vma < section->vma + section->size);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2976 long static_count, asymbol **static_syms,
2977 long dyn_count, asymbol **dyn_syms,
2984 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2986 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2991 opd = bfd_get_section_by_name (abfd, ".opd");
2995 symcount = static_count;
2997 symcount += dyn_count;
3001 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3005 if (!relocatable && static_count != 0 && dyn_count != 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms, static_syms, static_count * sizeof (*syms));
3009 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3011 else if (!relocatable && static_count == 0)
3012 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3014 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3016 synthetic_relocatable = relocatable;
3017 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3019 if (!relocatable && symcount > 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i = 1, j = 1; i < symcount; ++i)
3026 if (syms[i - 1]->value + syms[i - 1]->section->vma
3027 != syms[i]->value + syms[i]->section->vma)
3028 syms[j++] = syms[i];
3033 if (strcmp (syms[i]->section->name, ".opd") == 0)
3037 for (; i < symcount; ++i)
3038 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3039 != (SEC_CODE | SEC_ALLOC))
3040 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3044 for (; i < symcount; ++i)
3045 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3049 for (; i < symcount; ++i)
3050 if (strcmp (syms[i]->section->name, ".opd") != 0)
3054 for (; i < symcount; ++i)
3055 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3056 != (SEC_CODE | SEC_ALLOC))
3064 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3069 if (opdsymend == secsymend)
3072 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3073 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3077 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3084 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3088 while (r < opd->relocation + relcount
3089 && r->address < syms[i]->value + opd->vma)
3092 if (r == opd->relocation + relcount)
3095 if (r->address != syms[i]->value + opd->vma)
3098 if (r->howto->type != R_PPC64_ADDR64)
3101 sym = *r->sym_ptr_ptr;
3102 if (!sym_exists_at (syms, opdsymend, symcount,
3103 sym->section->id, sym->value + r->addend))
3106 size += sizeof (asymbol);
3107 size += strlen (syms[i]->name) + 2;
3111 s = *ret = bfd_malloc (size);
3118 names = (char *) (s + count);
3120 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3124 while (r < opd->relocation + relcount
3125 && r->address < syms[i]->value + opd->vma)
3128 if (r == opd->relocation + relcount)
3131 if (r->address != syms[i]->value + opd->vma)
3134 if (r->howto->type != R_PPC64_ADDR64)
3137 sym = *r->sym_ptr_ptr;
3138 if (!sym_exists_at (syms, opdsymend, symcount,
3139 sym->section->id, sym->value + r->addend))
3144 s->flags |= BSF_SYNTHETIC;
3145 s->section = sym->section;
3146 s->value = sym->value + r->addend;
3149 len = strlen (syms[i]->name);
3150 memcpy (names, syms[i]->name, len + 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s->udata.p = syms[i];
3161 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3165 bfd_vma glink_vma = 0, resolv_vma = 0;
3166 asection *dynamic, *glink = NULL, *relplt = NULL;
3169 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3173 free_contents_and_exit:
3181 for (i = secsymend; i < opdsymend; ++i)
3185 /* Ignore bogus symbols. */
3186 if (syms[i]->value > opd->size - 8)
3189 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3190 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3193 size += sizeof (asymbol);
3194 size += strlen (syms[i]->name) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3202 bfd_byte *dynbuf, *extdyn, *extdynend;
3204 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3206 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3207 goto free_contents_and_exit;
3209 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3210 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3213 extdynend = extdyn + dynamic->size;
3214 for (; extdyn < extdynend; extdyn += extdynsize)
3216 Elf_Internal_Dyn dyn;
3217 (*swap_dyn_in) (abfd, extdyn, &dyn);
3219 if (dyn.d_tag == DT_NULL)
3222 if (dyn.d_tag == DT_PPC64_GLINK)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma = dyn.d_un.d_val + 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink = bfd_sections_find_if (abfd, section_covers_vma,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd, glink, buf,
3245 glink_vma + 4 - glink->vma, 4))
3247 unsigned int insn = bfd_get_32 (abfd, buf);
3249 if ((insn & ~0x3fffffc) == 0)
3250 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3254 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3256 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3259 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3260 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3261 goto free_contents_and_exit;
3263 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3264 size += plt_count * sizeof (asymbol);
3266 p = relplt->relocation;
3267 for (i = 0; i < plt_count; i++, p++)
3269 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3271 size += sizeof ("+0x") - 1 + 16;
3276 s = *ret = bfd_malloc (size);
3278 goto free_contents_and_exit;
3280 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3282 for (i = secsymend; i < opdsymend; ++i)
3286 if (syms[i]->value > opd->size - 8)
3289 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3290 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3294 asection *sec = abfd->sections;
3301 long mid = (lo + hi) >> 1;
3302 if (syms[mid]->section->vma < ent)
3304 else if (syms[mid]->section->vma > ent)
3308 sec = syms[mid]->section;
3313 if (lo >= hi && lo > codesecsym)
3314 sec = syms[lo - 1]->section;
3316 for (; sec != NULL; sec = sec->next)
3320 /* SEC_LOAD may not be set if SEC is from a separate debug
3322 if ((sec->flags & SEC_ALLOC) == 0)
3324 if ((sec->flags & SEC_CODE) != 0)
3327 s->flags |= BSF_SYNTHETIC;
3328 s->value = ent - s->section->vma;
3331 len = strlen (syms[i]->name);
3332 memcpy (names, syms[i]->name, len + 1);
3334 /* Have udata.p point back to the original symbol this
3335 synthetic symbol was derived from. */
3336 s->udata.p = syms[i];
3342 if (glink != NULL && relplt != NULL)
3346 /* Add a symbol for the main glink trampoline. */
3347 memset (s, 0, sizeof *s);
3349 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3351 s->value = resolv_vma - glink->vma;
3353 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3354 names += sizeof ("__glink_PLTresolve");
3359 /* FIXME: It would be very much nicer to put sym@plt on the
3360 stub rather than on the glink branch table entry. The
3361 objdump disassembler would then use a sensible symbol
3362 name on plt calls. The difficulty in doing so is
3363 a) finding the stubs, and,
3364 b) matching stubs against plt entries, and,
3365 c) there can be multiple stubs for a given plt entry.
3367 Solving (a) could be done by code scanning, but older
3368 ppc64 binaries used different stubs to current code.
3369 (b) is the tricky one since you need to known the toc
3370 pointer for at least one function that uses a pic stub to
3371 be able to calculate the plt address referenced.
3372 (c) means gdb would need to set multiple breakpoints (or
3373 find the glink branch itself) when setting breakpoints
3374 for pending shared library loads. */
3375 p = relplt->relocation;
3376 for (i = 0; i < plt_count; i++, p++)
3380 *s = **p->sym_ptr_ptr;
3381 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3382 we are defining a symbol, ensure one of them is set. */
3383 if ((s->flags & BSF_LOCAL) == 0)
3384 s->flags |= BSF_GLOBAL;
3385 s->flags |= BSF_SYNTHETIC;
3387 s->value = glink_vma - glink->vma;
3390 len = strlen ((*p->sym_ptr_ptr)->name);
3391 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3395 memcpy (names, "+0x", sizeof ("+0x") - 1);
3396 names += sizeof ("+0x") - 1;
3397 bfd_sprintf_vma (abfd, names, p->addend);
3398 names += strlen (names);
3400 memcpy (names, "@plt", sizeof ("@plt"));
3401 names += sizeof ("@plt");
3416 /* The following functions are specific to the ELF linker, while
3417 functions above are used generally. Those named ppc64_elf_* are
3418 called by the main ELF linker code. They appear in this file more
3419 or less in the order in which they are called. eg.
3420 ppc64_elf_check_relocs is called early in the link process,
3421 ppc64_elf_finish_dynamic_sections is one of the last functions
3424 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3425 functions have both a function code symbol and a function descriptor
3426 symbol. A call to foo in a relocatable object file looks like:
3433 The function definition in another object file might be:
3437 . .quad .TOC.@tocbase
3443 When the linker resolves the call during a static link, the branch
3444 unsurprisingly just goes to .foo and the .opd information is unused.
3445 If the function definition is in a shared library, things are a little
3446 different: The call goes via a plt call stub, the opd information gets
3447 copied to the plt, and the linker patches the nop.
3455 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3456 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3457 . std 2,40(1) # this is the general idea
3465 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3467 The "reloc ()" notation is supposed to indicate that the linker emits
3468 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3471 What are the difficulties here? Well, firstly, the relocations
3472 examined by the linker in check_relocs are against the function code
3473 sym .foo, while the dynamic relocation in the plt is emitted against
3474 the function descriptor symbol, foo. Somewhere along the line, we need
3475 to carefully copy dynamic link information from one symbol to the other.
3476 Secondly, the generic part of the elf linker will make .foo a dynamic
3477 symbol as is normal for most other backends. We need foo dynamic
3478 instead, at least for an application final link. However, when
3479 creating a shared library containing foo, we need to have both symbols
3480 dynamic so that references to .foo are satisfied during the early
3481 stages of linking. Otherwise the linker might decide to pull in a
3482 definition from some other object, eg. a static library.
3484 Update: As of August 2004, we support a new convention. Function
3485 calls may use the function descriptor symbol, ie. "bl foo". This
3486 behaves exactly as "bl .foo". */
3488 /* Of those relocs that might be copied as dynamic relocs, this function
3489 selects those that must be copied when linking a shared library,
3490 even when the symbol is local. */
3493 must_be_dyn_reloc (struct bfd_link_info *info,
3494 enum elf_ppc64_reloc_type r_type)
3506 case R_PPC64_TPREL16:
3507 case R_PPC64_TPREL16_LO:
3508 case R_PPC64_TPREL16_HI:
3509 case R_PPC64_TPREL16_HA:
3510 case R_PPC64_TPREL16_DS:
3511 case R_PPC64_TPREL16_LO_DS:
3512 case R_PPC64_TPREL16_HIGHER:
3513 case R_PPC64_TPREL16_HIGHERA:
3514 case R_PPC64_TPREL16_HIGHEST:
3515 case R_PPC64_TPREL16_HIGHESTA:
3516 case R_PPC64_TPREL64:
3517 return !info->executable;
3521 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3522 copying dynamic variables from a shared lib into an app's dynbss
3523 section, and instead use a dynamic relocation to point into the
3524 shared lib. With code that gcc generates, it's vital that this be
3525 enabled; In the PowerPC64 ABI, the address of a function is actually
3526 the address of a function descriptor, which resides in the .opd
3527 section. gcc uses the descriptor directly rather than going via the
3528 GOT as some other ABI's do, which means that initialized function
3529 pointers must reference the descriptor. Thus, a function pointer
3530 initialized to the address of a function in a shared library will
3531 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3532 redefines the function descriptor symbol to point to the copy. This
3533 presents a problem as a plt entry for that function is also
3534 initialized from the function descriptor symbol and the copy reloc
3535 may not be initialized first. */
3536 #define ELIMINATE_COPY_RELOCS 1
3538 /* Section name for stubs is the associated section name plus this
3540 #define STUB_SUFFIX ".stub"
3543 ppc_stub_long_branch:
3544 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3545 destination, but a 24 bit branch in a stub section will reach.
3548 ppc_stub_plt_branch:
3549 Similar to the above, but a 24 bit branch in the stub section won't
3550 reach its destination.
3551 . addis %r12,%r2,xxx@toc@ha
3552 . ld %r11,xxx@toc@l(%r12)
3557 Used to call a function in a shared library. If it so happens that
3558 the plt entry referenced crosses a 64k boundary, then an extra
3559 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3560 . addis %r12,%r2,xxx@toc@ha
3562 . ld %r11,xxx+0@toc@l(%r12)
3564 . ld %r2,xxx+8@toc@l(%r12)
3565 . ld %r11,xxx+16@toc@l(%r12)
3568 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3569 code to adjust the value and save r2 to support multiple toc sections.
3570 A ppc_stub_long_branch with an r2 offset looks like:
3572 . addis %r2,%r2,off@ha
3573 . addi %r2,%r2,off@l
3576 A ppc_stub_plt_branch with an r2 offset looks like:
3578 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx@toc@l(%r12)
3580 . addis %r2,%r2,off@ha
3581 . addi %r2,%r2,off@l
3585 In cases where the "addis" instruction would add zero, the "addis" is
3586 omitted and following instructions modified slightly in some cases.
3589 enum ppc_stub_type {
3591 ppc_stub_long_branch,
3592 ppc_stub_long_branch_r2off,
3593 ppc_stub_plt_branch,
3594 ppc_stub_plt_branch_r2off,
3596 ppc_stub_plt_call_r2save
3599 struct ppc_stub_hash_entry {
3601 /* Base hash table entry structure. */
3602 struct bfd_hash_entry root;
3604 enum ppc_stub_type stub_type;
3606 /* The stub section. */
3609 /* Offset within stub_sec of the beginning of this stub. */
3610 bfd_vma stub_offset;
3612 /* Given the symbol's value and its section we can determine its final
3613 value when building the stubs (so the stub knows where to jump. */
3614 bfd_vma target_value;
3615 asection *target_section;
3617 /* The symbol table entry, if any, that this was derived from. */
3618 struct ppc_link_hash_entry *h;
3619 struct plt_entry *plt_ent;
3621 /* And the reloc addend that this was derived from. */
3624 /* Where this stub is being called from, or, in the case of combined
3625 stub sections, the first input section in the group. */
3629 struct ppc_branch_hash_entry {
3631 /* Base hash table entry structure. */
3632 struct bfd_hash_entry root;
3634 /* Offset within branch lookup table. */
3635 unsigned int offset;
3637 /* Generation marker. */
3641 struct ppc_link_hash_entry
3643 struct elf_link_hash_entry elf;
3646 /* A pointer to the most recently used stub hash entry against this
3648 struct ppc_stub_hash_entry *stub_cache;
3650 /* A pointer to the next symbol starting with a '.' */
3651 struct ppc_link_hash_entry *next_dot_sym;
3654 /* Track dynamic relocs copied for this symbol. */
3655 struct elf_dyn_relocs *dyn_relocs;
3657 /* Link between function code and descriptor symbols. */
3658 struct ppc_link_hash_entry *oh;
3660 /* Flag function code and descriptor symbols. */
3661 unsigned int is_func:1;
3662 unsigned int is_func_descriptor:1;
3663 unsigned int fake:1;
3665 /* Whether global opd/toc sym has been adjusted or not.
3666 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3667 should be set for all globals defined in any opd/toc section. */
3668 unsigned int adjust_done:1;
3670 /* Set if we twiddled this symbol to weak at some stage. */
3671 unsigned int was_undefined:1;
3673 /* Contexts in which symbol is used in the GOT (or TOC).
3674 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3675 corresponding relocs are encountered during check_relocs.
3676 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3677 indicate the corresponding GOT entry type is not needed.
3678 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3679 a TPREL one. We use a separate flag rather than setting TPREL
3680 just for convenience in distinguishing the two cases. */
3681 #define TLS_GD 1 /* GD reloc. */
3682 #define TLS_LD 2 /* LD reloc. */
3683 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3684 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3685 #define TLS_TLS 16 /* Any TLS reloc. */
3686 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3687 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3688 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3689 unsigned char tls_mask;
3692 /* ppc64 ELF linker hash table. */
3694 struct ppc_link_hash_table
3696 struct elf_link_hash_table elf;
3698 /* The stub hash table. */
3699 struct bfd_hash_table stub_hash_table;
3701 /* Another hash table for plt_branch stubs. */
3702 struct bfd_hash_table branch_hash_table;
3704 /* Hash table for function prologue tocsave. */
3705 htab_t tocsave_htab;
3707 /* Linker stub bfd. */
3710 /* Linker call-backs. */
3711 asection * (*add_stub_section) (const char *, asection *);
3712 void (*layout_sections_again) (void);
3714 /* Array to keep track of which stub sections have been created, and
3715 information on stub grouping. */
3717 /* This is the section to which stubs in the group will be attached. */
3719 /* The stub section. */
3721 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3725 /* Temp used when calculating TOC pointers. */
3728 asection *toc_first_sec;
3730 /* Highest input section id. */
3733 /* Highest output section index. */
3736 /* Used when adding symbols. */
3737 struct ppc_link_hash_entry *dot_syms;
3739 /* List of input sections for each output section. */
3740 asection **input_list;
3742 /* Short-cuts to get to dynamic linker sections. */
3754 asection *glink_eh_frame;
3756 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3757 struct ppc_link_hash_entry *tls_get_addr;
3758 struct ppc_link_hash_entry *tls_get_addr_fd;
3760 /* The size of reliplt used by got entry relocs. */
3761 bfd_size_type got_reli_size;
3764 unsigned long stub_count[ppc_stub_plt_call_r2save];
3766 /* Number of stubs against global syms. */
3767 unsigned long stub_globals;
3769 /* Alignment of PLT call stubs. */
3770 unsigned int plt_stub_align:4;
3772 /* Set if PLT call stubs should load r11. */
3773 unsigned int plt_static_chain:1;
3775 /* Set if PLT call stubs need a read-read barrier. */
3776 unsigned int plt_thread_safe:1;
3778 /* Set if we should emit symbols for stubs. */
3779 unsigned int emit_stub_syms:1;
3781 /* Set if __tls_get_addr optimization should not be done. */
3782 unsigned int no_tls_get_addr_opt:1;
3784 /* Support for multiple toc sections. */
3785 unsigned int do_multi_toc:1;
3786 unsigned int multi_toc_needed:1;
3787 unsigned int second_toc_pass:1;
3788 unsigned int do_toc_opt:1;
3791 unsigned int stub_error:1;
3793 /* Temp used by ppc64_elf_process_dot_syms. */
3794 unsigned int twiddled_syms:1;
3796 /* Incremented every time we size stubs. */
3797 unsigned int stub_iteration;
3799 /* Small local sym cache. */
3800 struct sym_cache sym_cache;
3803 /* Rename some of the generic section flags to better document how they
3806 /* Nonzero if this section has TLS related relocations. */
3807 #define has_tls_reloc sec_flg0
3809 /* Nonzero if this section has a call to __tls_get_addr. */
3810 #define has_tls_get_addr_call sec_flg1
3812 /* Nonzero if this section has any toc or got relocs. */
3813 #define has_toc_reloc sec_flg2
3815 /* Nonzero if this section has a call to another section that uses
3817 #define makes_toc_func_call sec_flg3
3819 /* Recursion protection when determining above flag. */
3820 #define call_check_in_progress sec_flg4
3821 #define call_check_done sec_flg5
3823 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3825 #define ppc_hash_table(p) \
3826 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3827 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3829 #define ppc_stub_hash_lookup(table, string, create, copy) \
3830 ((struct ppc_stub_hash_entry *) \
3831 bfd_hash_lookup ((table), (string), (create), (copy)))
3833 #define ppc_branch_hash_lookup(table, string, create, copy) \
3834 ((struct ppc_branch_hash_entry *) \
3835 bfd_hash_lookup ((table), (string), (create), (copy)))
3837 /* Create an entry in the stub hash table. */
3839 static struct bfd_hash_entry *
3840 stub_hash_newfunc (struct bfd_hash_entry *entry,
3841 struct bfd_hash_table *table,
3844 /* Allocate the structure if it has not already been allocated by a
3848 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3853 /* Call the allocation method of the superclass. */
3854 entry = bfd_hash_newfunc (entry, table, string);
3857 struct ppc_stub_hash_entry *eh;
3859 /* Initialize the local fields. */
3860 eh = (struct ppc_stub_hash_entry *) entry;
3861 eh->stub_type = ppc_stub_none;
3862 eh->stub_sec = NULL;
3863 eh->stub_offset = 0;
3864 eh->target_value = 0;
3865 eh->target_section = NULL;
3873 /* Create an entry in the branch hash table. */
3875 static struct bfd_hash_entry *
3876 branch_hash_newfunc (struct bfd_hash_entry *entry,
3877 struct bfd_hash_table *table,
3880 /* Allocate the structure if it has not already been allocated by a
3884 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3889 /* Call the allocation method of the superclass. */
3890 entry = bfd_hash_newfunc (entry, table, string);
3893 struct ppc_branch_hash_entry *eh;
3895 /* Initialize the local fields. */
3896 eh = (struct ppc_branch_hash_entry *) entry;
3904 /* Create an entry in a ppc64 ELF linker hash table. */
3906 static struct bfd_hash_entry *
3907 link_hash_newfunc (struct bfd_hash_entry *entry,
3908 struct bfd_hash_table *table,
3911 /* Allocate the structure if it has not already been allocated by a
3915 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3920 /* Call the allocation method of the superclass. */
3921 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3924 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3926 memset (&eh->u.stub_cache, 0,
3927 (sizeof (struct ppc_link_hash_entry)
3928 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3930 /* When making function calls, old ABI code references function entry
3931 points (dot symbols), while new ABI code references the function
3932 descriptor symbol. We need to make any combination of reference and
3933 definition work together, without breaking archive linking.
3935 For a defined function "foo" and an undefined call to "bar":
3936 An old object defines "foo" and ".foo", references ".bar" (possibly
3938 A new object defines "foo" and references "bar".
3940 A new object thus has no problem with its undefined symbols being
3941 satisfied by definitions in an old object. On the other hand, the
3942 old object won't have ".bar" satisfied by a new object.
3944 Keep a list of newly added dot-symbols. */
3946 if (string[0] == '.')
3948 struct ppc_link_hash_table *htab;
3950 htab = (struct ppc_link_hash_table *) table;
3951 eh->u.next_dot_sym = htab->dot_syms;
3952 htab->dot_syms = eh;
3959 struct tocsave_entry {
3965 tocsave_htab_hash (const void *p)
3967 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
3968 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
3972 tocsave_htab_eq (const void *p1, const void *p2)
3974 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
3975 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
3976 return e1->sec == e2->sec && e1->offset == e2->offset;
3979 /* Create a ppc64 ELF linker hash table. */
3981 static struct bfd_link_hash_table *
3982 ppc64_elf_link_hash_table_create (bfd *abfd)
3984 struct ppc_link_hash_table *htab;
3985 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3987 htab = bfd_zmalloc (amt);
3991 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3992 sizeof (struct ppc_link_hash_entry),
3999 /* Init the stub hash table too. */
4000 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4001 sizeof (struct ppc_stub_hash_entry)))
4004 /* And the branch hash table. */
4005 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4006 sizeof (struct ppc_branch_hash_entry)))
4009 htab->tocsave_htab = htab_try_create (1024,
4013 if (htab->tocsave_htab == NULL)
4016 /* Initializing two fields of the union is just cosmetic. We really
4017 only care about glist, but when compiled on a 32-bit host the
4018 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4019 debugger inspection of these fields look nicer. */
4020 htab->elf.init_got_refcount.refcount = 0;
4021 htab->elf.init_got_refcount.glist = NULL;
4022 htab->elf.init_plt_refcount.refcount = 0;
4023 htab->elf.init_plt_refcount.glist = NULL;
4024 htab->elf.init_got_offset.offset = 0;
4025 htab->elf.init_got_offset.glist = NULL;
4026 htab->elf.init_plt_offset.offset = 0;
4027 htab->elf.init_plt_offset.glist = NULL;
4029 return &htab->elf.root;
4032 /* Free the derived linker hash table. */
4035 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4037 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4039 bfd_hash_table_free (&htab->stub_hash_table);
4040 bfd_hash_table_free (&htab->branch_hash_table);
4041 if (htab->tocsave_htab)
4042 htab_delete (htab->tocsave_htab);
4043 _bfd_generic_link_hash_table_free (hash);
4046 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4049 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4051 struct ppc_link_hash_table *htab;
4053 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4055 /* Always hook our dynamic sections into the first bfd, which is the
4056 linker created stub bfd. This ensures that the GOT header is at
4057 the start of the output TOC section. */
4058 htab = ppc_hash_table (info);
4061 htab->stub_bfd = abfd;
4062 htab->elf.dynobj = abfd;
4065 /* Build a name for an entry in the stub hash table. */
4068 ppc_stub_name (const asection *input_section,
4069 const asection *sym_sec,
4070 const struct ppc_link_hash_entry *h,
4071 const Elf_Internal_Rela *rel)
4076 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4077 offsets from a sym as a branch target? In fact, we could
4078 probably assume the addend is always zero. */
4079 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4083 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4084 stub_name = bfd_malloc (len);
4085 if (stub_name == NULL)
4088 sprintf (stub_name, "%08x.%s+%x",
4089 input_section->id & 0xffffffff,
4090 h->elf.root.root.string,
4091 (int) rel->r_addend & 0xffffffff);
4095 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4096 stub_name = bfd_malloc (len);
4097 if (stub_name == NULL)
4100 sprintf (stub_name, "%08x.%x:%x+%x",
4101 input_section->id & 0xffffffff,
4102 sym_sec->id & 0xffffffff,
4103 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4104 (int) rel->r_addend & 0xffffffff);
4106 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4107 stub_name[len - 2] = 0;
4111 /* Look up an entry in the stub hash. Stub entries are cached because
4112 creating the stub name takes a bit of time. */
4114 static struct ppc_stub_hash_entry *
4115 ppc_get_stub_entry (const asection *input_section,
4116 const asection *sym_sec,
4117 struct ppc_link_hash_entry *h,
4118 const Elf_Internal_Rela *rel,
4119 struct ppc_link_hash_table *htab)
4121 struct ppc_stub_hash_entry *stub_entry;
4122 const asection *id_sec;
4124 /* If this input section is part of a group of sections sharing one
4125 stub section, then use the id of the first section in the group.
4126 Stub names need to include a section id, as there may well be
4127 more than one stub used to reach say, printf, and we need to
4128 distinguish between them. */
4129 id_sec = htab->stub_group[input_section->id].link_sec;
4131 if (h != NULL && h->u.stub_cache != NULL
4132 && h->u.stub_cache->h == h
4133 && h->u.stub_cache->id_sec == id_sec)
4135 stub_entry = h->u.stub_cache;
4141 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4142 if (stub_name == NULL)
4145 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4146 stub_name, FALSE, FALSE);
4148 h->u.stub_cache = stub_entry;
4156 /* Add a new stub entry to the stub hash. Not all fields of the new
4157 stub entry are initialised. */
4159 static struct ppc_stub_hash_entry *
4160 ppc_add_stub (const char *stub_name,
4162 struct bfd_link_info *info)
4164 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4167 struct ppc_stub_hash_entry *stub_entry;
4169 link_sec = htab->stub_group[section->id].link_sec;
4170 stub_sec = htab->stub_group[section->id].stub_sec;
4171 if (stub_sec == NULL)
4173 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4174 if (stub_sec == NULL)
4180 namelen = strlen (link_sec->name);
4181 len = namelen + sizeof (STUB_SUFFIX);
4182 s_name = bfd_alloc (htab->stub_bfd, len);
4186 memcpy (s_name, link_sec->name, namelen);
4187 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4188 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4189 if (stub_sec == NULL)
4191 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4193 htab->stub_group[section->id].stub_sec = stub_sec;
4196 /* Enter this entry into the linker stub hash table. */
4197 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4199 if (stub_entry == NULL)
4201 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4202 section->owner, stub_name);
4206 stub_entry->stub_sec = stub_sec;
4207 stub_entry->stub_offset = 0;
4208 stub_entry->id_sec = link_sec;
4212 /* Create sections for linker generated code. */
4215 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4217 struct ppc_link_hash_table *htab;
4220 htab = ppc_hash_table (info);
4224 /* Create .sfpr for code to save and restore fp regs. */
4225 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4226 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4227 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4229 if (htab->sfpr == NULL
4230 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4233 /* Create .glink for lazy dynamic linking support. */
4234 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4236 if (htab->glink == NULL
4237 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4240 if (!info->no_ld_generated_unwind_info)
4242 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4243 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4244 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4247 if (htab->glink_eh_frame == NULL
4248 || !bfd_set_section_alignment (abfd, htab->glink_eh_frame, 2))
4252 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4253 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4254 if (htab->iplt == NULL
4255 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4263 if (htab->reliplt == NULL
4264 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4267 /* Create branch lookup table for plt_branch stubs. */
4268 flags = (SEC_ALLOC | SEC_LOAD
4269 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4270 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4272 if (htab->brlt == NULL
4273 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4279 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4280 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4281 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4284 if (htab->relbrlt == NULL
4285 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4291 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4292 not already done. */
4295 create_got_section (bfd *abfd, struct bfd_link_info *info)
4297 asection *got, *relgot;
4299 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4301 if (!is_ppc64_elf (abfd))
4308 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4311 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4316 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4317 | SEC_LINKER_CREATED);
4319 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4321 || !bfd_set_section_alignment (abfd, got, 3))
4324 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4325 flags | SEC_READONLY);
4327 || ! bfd_set_section_alignment (abfd, relgot, 3))
4330 ppc64_elf_tdata (abfd)->got = got;
4331 ppc64_elf_tdata (abfd)->relgot = relgot;
4335 /* Create the dynamic sections, and set up shortcuts. */
4338 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4340 struct ppc_link_hash_table *htab;
4342 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4345 htab = ppc_hash_table (info);
4350 htab->got = bfd_get_section_by_name (dynobj, ".got");
4351 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4352 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4353 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
4355 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
4357 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4358 || (!info->shared && !htab->relbss))
4364 /* Follow indirect and warning symbol links. */
4366 static inline struct bfd_link_hash_entry *
4367 follow_link (struct bfd_link_hash_entry *h)
4369 while (h->type == bfd_link_hash_indirect
4370 || h->type == bfd_link_hash_warning)
4375 static inline struct elf_link_hash_entry *
4376 elf_follow_link (struct elf_link_hash_entry *h)
4378 return (struct elf_link_hash_entry *) follow_link (&h->root);
4381 static inline struct ppc_link_hash_entry *
4382 ppc_follow_link (struct ppc_link_hash_entry *h)
4384 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4387 /* Merge PLT info on FROM with that on TO. */
4390 move_plt_plist (struct ppc_link_hash_entry *from,
4391 struct ppc_link_hash_entry *to)
4393 if (from->elf.plt.plist != NULL)
4395 if (to->elf.plt.plist != NULL)
4397 struct plt_entry **entp;
4398 struct plt_entry *ent;
4400 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4402 struct plt_entry *dent;
4404 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4405 if (dent->addend == ent->addend)
4407 dent->plt.refcount += ent->plt.refcount;
4414 *entp = to->elf.plt.plist;
4417 to->elf.plt.plist = from->elf.plt.plist;
4418 from->elf.plt.plist = NULL;
4422 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4425 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4426 struct elf_link_hash_entry *dir,
4427 struct elf_link_hash_entry *ind)
4429 struct ppc_link_hash_entry *edir, *eind;
4431 edir = (struct ppc_link_hash_entry *) dir;
4432 eind = (struct ppc_link_hash_entry *) ind;
4434 edir->is_func |= eind->is_func;
4435 edir->is_func_descriptor |= eind->is_func_descriptor;
4436 edir->tls_mask |= eind->tls_mask;
4437 if (eind->oh != NULL)
4438 edir->oh = ppc_follow_link (eind->oh);
4440 /* If called to transfer flags for a weakdef during processing
4441 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4442 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4443 if (!(ELIMINATE_COPY_RELOCS
4444 && eind->elf.root.type != bfd_link_hash_indirect
4445 && edir->elf.dynamic_adjusted))
4446 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4448 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4449 edir->elf.ref_regular |= eind->elf.ref_regular;
4450 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4451 edir->elf.needs_plt |= eind->elf.needs_plt;
4453 /* Copy over any dynamic relocs we may have on the indirect sym. */
4454 if (eind->dyn_relocs != NULL)
4456 if (edir->dyn_relocs != NULL)
4458 struct elf_dyn_relocs **pp;
4459 struct elf_dyn_relocs *p;
4461 /* Add reloc counts against the indirect sym to the direct sym
4462 list. Merge any entries against the same section. */
4463 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4465 struct elf_dyn_relocs *q;
4467 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4468 if (q->sec == p->sec)
4470 q->pc_count += p->pc_count;
4471 q->count += p->count;
4478 *pp = edir->dyn_relocs;
4481 edir->dyn_relocs = eind->dyn_relocs;
4482 eind->dyn_relocs = NULL;
4485 /* If we were called to copy over info for a weak sym, that's all.
4486 You might think dyn_relocs need not be copied over; After all,
4487 both syms will be dynamic or both non-dynamic so we're just
4488 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4489 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4490 dyn_relocs in read-only sections, and it does so on what is the
4492 if (eind->elf.root.type != bfd_link_hash_indirect)
4495 /* Copy over got entries that we may have already seen to the
4496 symbol which just became indirect. */
4497 if (eind->elf.got.glist != NULL)
4499 if (edir->elf.got.glist != NULL)
4501 struct got_entry **entp;
4502 struct got_entry *ent;
4504 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4506 struct got_entry *dent;
4508 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4509 if (dent->addend == ent->addend
4510 && dent->owner == ent->owner
4511 && dent->tls_type == ent->tls_type)
4513 dent->got.refcount += ent->got.refcount;
4520 *entp = edir->elf.got.glist;
4523 edir->elf.got.glist = eind->elf.got.glist;
4524 eind->elf.got.glist = NULL;
4527 /* And plt entries. */
4528 move_plt_plist (eind, edir);
4530 if (eind->elf.dynindx != -1)
4532 if (edir->elf.dynindx != -1)
4533 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4534 edir->elf.dynstr_index);
4535 edir->elf.dynindx = eind->elf.dynindx;
4536 edir->elf.dynstr_index = eind->elf.dynstr_index;
4537 eind->elf.dynindx = -1;
4538 eind->elf.dynstr_index = 0;
4542 /* Find the function descriptor hash entry from the given function code
4543 hash entry FH. Link the entries via their OH fields. */
4545 static struct ppc_link_hash_entry *
4546 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4548 struct ppc_link_hash_entry *fdh = fh->oh;
4552 const char *fd_name = fh->elf.root.root.string + 1;
4554 fdh = (struct ppc_link_hash_entry *)
4555 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4559 fdh->is_func_descriptor = 1;
4565 return ppc_follow_link (fdh);
4568 /* Make a fake function descriptor sym for the code sym FH. */
4570 static struct ppc_link_hash_entry *
4571 make_fdh (struct bfd_link_info *info,
4572 struct ppc_link_hash_entry *fh)
4576 struct bfd_link_hash_entry *bh;
4577 struct ppc_link_hash_entry *fdh;
4579 abfd = fh->elf.root.u.undef.abfd;
4580 newsym = bfd_make_empty_symbol (abfd);
4581 newsym->name = fh->elf.root.root.string + 1;
4582 newsym->section = bfd_und_section_ptr;
4584 newsym->flags = BSF_WEAK;
4587 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4588 newsym->flags, newsym->section,
4589 newsym->value, NULL, FALSE, FALSE,
4593 fdh = (struct ppc_link_hash_entry *) bh;
4594 fdh->elf.non_elf = 0;
4596 fdh->is_func_descriptor = 1;
4603 /* Fix function descriptor symbols defined in .opd sections to be
4607 ppc64_elf_add_symbol_hook (bfd *ibfd,
4608 struct bfd_link_info *info,
4609 Elf_Internal_Sym *isym,
4610 const char **name ATTRIBUTE_UNUSED,
4611 flagword *flags ATTRIBUTE_UNUSED,
4613 bfd_vma *value ATTRIBUTE_UNUSED)
4615 if ((ibfd->flags & DYNAMIC) == 0
4616 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4617 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4619 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4621 if ((ibfd->flags & DYNAMIC) == 0)
4622 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4624 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4626 else if (*sec != NULL
4627 && strcmp ((*sec)->name, ".opd") == 0)
4628 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4633 /* This function makes an old ABI object reference to ".bar" cause the
4634 inclusion of a new ABI object archive that defines "bar".
4635 NAME is a symbol defined in an archive. Return a symbol in the hash
4636 table that might be satisfied by the archive symbols. */
4638 static struct elf_link_hash_entry *
4639 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4640 struct bfd_link_info *info,
4643 struct elf_link_hash_entry *h;
4647 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4649 /* Don't return this sym if it is a fake function descriptor
4650 created by add_symbol_adjust. */
4651 && !(h->root.type == bfd_link_hash_undefweak
4652 && ((struct ppc_link_hash_entry *) h)->fake))
4658 len = strlen (name);
4659 dot_name = bfd_alloc (abfd, len + 2);
4660 if (dot_name == NULL)
4661 return (struct elf_link_hash_entry *) 0 - 1;
4663 memcpy (dot_name + 1, name, len + 1);
4664 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4665 bfd_release (abfd, dot_name);
4669 /* This function satisfies all old ABI object references to ".bar" if a
4670 new ABI object defines "bar". Well, at least, undefined dot symbols
4671 are made weak. This stops later archive searches from including an
4672 object if we already have a function descriptor definition. It also
4673 prevents the linker complaining about undefined symbols.
4674 We also check and correct mismatched symbol visibility here. The
4675 most restrictive visibility of the function descriptor and the
4676 function entry symbol is used. */
4679 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4681 struct ppc_link_hash_table *htab;
4682 struct ppc_link_hash_entry *fdh;
4684 if (eh->elf.root.type == bfd_link_hash_indirect)
4687 if (eh->elf.root.type == bfd_link_hash_warning)
4688 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4690 if (eh->elf.root.root.string[0] != '.')
4693 htab = ppc_hash_table (info);
4697 fdh = lookup_fdh (eh, htab);
4700 if (!info->relocatable
4701 && (eh->elf.root.type == bfd_link_hash_undefined
4702 || eh->elf.root.type == bfd_link_hash_undefweak)
4703 && eh->elf.ref_regular)
4705 /* Make an undefweak function descriptor sym, which is enough to
4706 pull in an --as-needed shared lib, but won't cause link
4707 errors. Archives are handled elsewhere. */
4708 fdh = make_fdh (info, eh);
4711 fdh->elf.ref_regular = 1;
4716 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4717 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4718 if (entry_vis < descr_vis)
4719 fdh->elf.other += entry_vis - descr_vis;
4720 else if (entry_vis > descr_vis)
4721 eh->elf.other += descr_vis - entry_vis;
4723 if ((fdh->elf.root.type == bfd_link_hash_defined
4724 || fdh->elf.root.type == bfd_link_hash_defweak)
4725 && eh->elf.root.type == bfd_link_hash_undefined)
4727 eh->elf.root.type = bfd_link_hash_undefweak;
4728 eh->was_undefined = 1;
4729 htab->twiddled_syms = 1;
4736 /* Process list of dot-symbols we made in link_hash_newfunc. */
4739 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4741 struct ppc_link_hash_table *htab;
4742 struct ppc_link_hash_entry **p, *eh;
4744 if (!is_ppc64_elf (info->output_bfd))
4746 htab = ppc_hash_table (info);
4750 if (is_ppc64_elf (ibfd))
4752 p = &htab->dot_syms;
4753 while ((eh = *p) != NULL)
4756 if (!add_symbol_adjust (eh, info))
4758 p = &eh->u.next_dot_sym;
4762 /* Clear the list for non-ppc64 input files. */
4763 p = &htab->dot_syms;
4764 while ((eh = *p) != NULL)
4767 p = &eh->u.next_dot_sym;
4770 /* We need to fix the undefs list for any syms we have twiddled to
4772 if (htab->twiddled_syms)
4774 bfd_link_repair_undef_list (&htab->elf.root);
4775 htab->twiddled_syms = 0;
4780 /* Undo hash table changes when an --as-needed input file is determined
4781 not to be needed. */
4784 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4785 struct bfd_link_info *info)
4787 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4792 htab->dot_syms = NULL;
4796 /* If --just-symbols against a final linked binary, then assume we need
4797 toc adjusting stubs when calling functions defined there. */
4800 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4802 if ((sec->flags & SEC_CODE) != 0
4803 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
4804 && is_ppc64_elf (sec->owner))
4806 asection *got = bfd_get_section_by_name (sec->owner, ".got");
4808 && got->size >= elf_backend_got_header_size
4809 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
4810 sec->has_toc_reloc = 1;
4812 _bfd_elf_link_just_syms (sec, info);
4815 static struct plt_entry **
4816 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4817 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4819 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4820 struct plt_entry **local_plt;
4821 unsigned char *local_got_tls_masks;
4823 if (local_got_ents == NULL)
4825 bfd_size_type size = symtab_hdr->sh_info;
4827 size *= (sizeof (*local_got_ents)
4828 + sizeof (*local_plt)
4829 + sizeof (*local_got_tls_masks));
4830 local_got_ents = bfd_zalloc (abfd, size);
4831 if (local_got_ents == NULL)
4833 elf_local_got_ents (abfd) = local_got_ents;
4836 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4838 struct got_entry *ent;
4840 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4841 if (ent->addend == r_addend
4842 && ent->owner == abfd
4843 && ent->tls_type == tls_type)
4847 bfd_size_type amt = sizeof (*ent);
4848 ent = bfd_alloc (abfd, amt);
4851 ent->next = local_got_ents[r_symndx];
4852 ent->addend = r_addend;
4854 ent->tls_type = tls_type;
4855 ent->is_indirect = FALSE;
4856 ent->got.refcount = 0;
4857 local_got_ents[r_symndx] = ent;
4859 ent->got.refcount += 1;
4862 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4863 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
4864 local_got_tls_masks[r_symndx] |= tls_type;
4866 return local_plt + r_symndx;
4870 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4872 struct plt_entry *ent;
4874 for (ent = *plist; ent != NULL; ent = ent->next)
4875 if (ent->addend == addend)
4879 bfd_size_type amt = sizeof (*ent);
4880 ent = bfd_alloc (abfd, amt);
4884 ent->addend = addend;
4885 ent->plt.refcount = 0;
4888 ent->plt.refcount += 1;
4893 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4895 return (r_type == R_PPC64_REL24
4896 || r_type == R_PPC64_REL14
4897 || r_type == R_PPC64_REL14_BRTAKEN
4898 || r_type == R_PPC64_REL14_BRNTAKEN
4899 || r_type == R_PPC64_ADDR24
4900 || r_type == R_PPC64_ADDR14
4901 || r_type == R_PPC64_ADDR14_BRTAKEN
4902 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4905 /* Look through the relocs for a section during the first phase, and
4906 calculate needed space in the global offset table, procedure
4907 linkage table, and dynamic reloc sections. */
4910 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4911 asection *sec, const Elf_Internal_Rela *relocs)
4913 struct ppc_link_hash_table *htab;
4914 Elf_Internal_Shdr *symtab_hdr;
4915 struct elf_link_hash_entry **sym_hashes;
4916 const Elf_Internal_Rela *rel;
4917 const Elf_Internal_Rela *rel_end;
4919 asection **opd_sym_map;
4920 struct elf_link_hash_entry *tga, *dottga;
4922 if (info->relocatable)
4925 /* Don't do anything special with non-loaded, non-alloced sections.
4926 In particular, any relocs in such sections should not affect GOT
4927 and PLT reference counting (ie. we don't allow them to create GOT
4928 or PLT entries), there's no possibility or desire to optimize TLS
4929 relocs, and there's not much point in propagating relocs to shared
4930 libs that the dynamic linker won't relocate. */
4931 if ((sec->flags & SEC_ALLOC) == 0)
4934 BFD_ASSERT (is_ppc64_elf (abfd));
4936 htab = ppc_hash_table (info);
4940 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4941 FALSE, FALSE, TRUE);
4942 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4943 FALSE, FALSE, TRUE);
4944 symtab_hdr = &elf_symtab_hdr (abfd);
4945 sym_hashes = elf_sym_hashes (abfd);
4948 if (strcmp (sec->name, ".opd") == 0)
4950 /* Garbage collection needs some extra help with .opd sections.
4951 We don't want to necessarily keep everything referenced by
4952 relocs in .opd, as that would keep all functions. Instead,
4953 if we reference an .opd symbol (a function descriptor), we
4954 want to keep the function code symbol's section. This is
4955 easy for global symbols, but for local syms we need to keep
4956 information about the associated function section. */
4959 amt = sec->size * sizeof (*opd_sym_map) / 8;
4960 opd_sym_map = bfd_zalloc (abfd, amt);
4961 if (opd_sym_map == NULL)
4963 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4964 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4965 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4968 if (htab->sfpr == NULL
4969 && !create_linkage_sections (htab->elf.dynobj, info))
4972 rel_end = relocs + sec->reloc_count;
4973 for (rel = relocs; rel < rel_end; rel++)
4975 unsigned long r_symndx;
4976 struct elf_link_hash_entry *h;
4977 enum elf_ppc64_reloc_type r_type;
4979 struct _ppc64_elf_section_data *ppc64_sec;
4980 struct plt_entry **ifunc;
4982 r_symndx = ELF64_R_SYM (rel->r_info);
4983 if (r_symndx < symtab_hdr->sh_info)
4987 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4988 h = elf_follow_link (h);
4995 if (h->type == STT_GNU_IFUNC)
4998 ifunc = &h->plt.plist;
5003 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5008 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5010 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5011 rel->r_addend, PLT_IFUNC);
5016 r_type = ELF64_R_TYPE (rel->r_info);
5017 if (is_branch_reloc (r_type))
5019 if (h != NULL && (h == tga || h == dottga))
5022 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5023 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5024 /* We have a new-style __tls_get_addr call with a marker
5028 /* Mark this section as having an old-style call. */
5029 sec->has_tls_get_addr_call = 1;
5032 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5034 && !update_plt_info (abfd, ifunc, rel->r_addend))
5042 /* These special tls relocs tie a call to __tls_get_addr with
5043 its parameter symbol. */
5046 case R_PPC64_GOT_TLSLD16:
5047 case R_PPC64_GOT_TLSLD16_LO:
5048 case R_PPC64_GOT_TLSLD16_HI:
5049 case R_PPC64_GOT_TLSLD16_HA:
5050 tls_type = TLS_TLS | TLS_LD;
5053 case R_PPC64_GOT_TLSGD16:
5054 case R_PPC64_GOT_TLSGD16_LO:
5055 case R_PPC64_GOT_TLSGD16_HI:
5056 case R_PPC64_GOT_TLSGD16_HA:
5057 tls_type = TLS_TLS | TLS_GD;
5060 case R_PPC64_GOT_TPREL16_DS:
5061 case R_PPC64_GOT_TPREL16_LO_DS:
5062 case R_PPC64_GOT_TPREL16_HI:
5063 case R_PPC64_GOT_TPREL16_HA:
5064 if (!info->executable)
5065 info->flags |= DF_STATIC_TLS;
5066 tls_type = TLS_TLS | TLS_TPREL;
5069 case R_PPC64_GOT_DTPREL16_DS:
5070 case R_PPC64_GOT_DTPREL16_LO_DS:
5071 case R_PPC64_GOT_DTPREL16_HI:
5072 case R_PPC64_GOT_DTPREL16_HA:
5073 tls_type = TLS_TLS | TLS_DTPREL;
5075 sec->has_tls_reloc = 1;
5079 case R_PPC64_GOT16_DS:
5080 case R_PPC64_GOT16_HA:
5081 case R_PPC64_GOT16_HI:
5082 case R_PPC64_GOT16_LO:
5083 case R_PPC64_GOT16_LO_DS:
5084 /* This symbol requires a global offset table entry. */
5085 sec->has_toc_reloc = 1;
5086 if (r_type == R_PPC64_GOT_TLSLD16
5087 || r_type == R_PPC64_GOT_TLSGD16
5088 || r_type == R_PPC64_GOT_TPREL16_DS
5089 || r_type == R_PPC64_GOT_DTPREL16_DS
5090 || r_type == R_PPC64_GOT16
5091 || r_type == R_PPC64_GOT16_DS)
5093 htab->do_multi_toc = 1;
5094 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5097 if (ppc64_elf_tdata (abfd)->got == NULL
5098 && !create_got_section (abfd, info))
5103 struct ppc_link_hash_entry *eh;
5104 struct got_entry *ent;
5106 eh = (struct ppc_link_hash_entry *) h;
5107 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5108 if (ent->addend == rel->r_addend
5109 && ent->owner == abfd
5110 && ent->tls_type == tls_type)
5114 bfd_size_type amt = sizeof (*ent);
5115 ent = bfd_alloc (abfd, amt);
5118 ent->next = eh->elf.got.glist;
5119 ent->addend = rel->r_addend;
5121 ent->tls_type = tls_type;
5122 ent->is_indirect = FALSE;
5123 ent->got.refcount = 0;
5124 eh->elf.got.glist = ent;
5126 ent->got.refcount += 1;
5127 eh->tls_mask |= tls_type;
5130 /* This is a global offset table entry for a local symbol. */
5131 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5132 rel->r_addend, tls_type))
5136 case R_PPC64_PLT16_HA:
5137 case R_PPC64_PLT16_HI:
5138 case R_PPC64_PLT16_LO:
5141 /* This symbol requires a procedure linkage table entry. We
5142 actually build the entry in adjust_dynamic_symbol,
5143 because this might be a case of linking PIC code without
5144 linking in any dynamic objects, in which case we don't
5145 need to generate a procedure linkage table after all. */
5148 /* It does not make sense to have a procedure linkage
5149 table entry for a local symbol. */
5150 bfd_set_error (bfd_error_bad_value);
5155 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5158 if (h->root.root.string[0] == '.'
5159 && h->root.root.string[1] != '\0')
5160 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5164 /* The following relocations don't need to propagate the
5165 relocation if linking a shared object since they are
5166 section relative. */
5167 case R_PPC64_SECTOFF:
5168 case R_PPC64_SECTOFF_LO:
5169 case R_PPC64_SECTOFF_HI:
5170 case R_PPC64_SECTOFF_HA:
5171 case R_PPC64_SECTOFF_DS:
5172 case R_PPC64_SECTOFF_LO_DS:
5173 case R_PPC64_DTPREL16:
5174 case R_PPC64_DTPREL16_LO:
5175 case R_PPC64_DTPREL16_HI:
5176 case R_PPC64_DTPREL16_HA:
5177 case R_PPC64_DTPREL16_DS:
5178 case R_PPC64_DTPREL16_LO_DS:
5179 case R_PPC64_DTPREL16_HIGHER:
5180 case R_PPC64_DTPREL16_HIGHERA:
5181 case R_PPC64_DTPREL16_HIGHEST:
5182 case R_PPC64_DTPREL16_HIGHESTA:
5187 case R_PPC64_REL16_LO:
5188 case R_PPC64_REL16_HI:
5189 case R_PPC64_REL16_HA:
5193 case R_PPC64_TOC16_DS:
5194 htab->do_multi_toc = 1;
5195 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5196 case R_PPC64_TOC16_LO:
5197 case R_PPC64_TOC16_HI:
5198 case R_PPC64_TOC16_HA:
5199 case R_PPC64_TOC16_LO_DS:
5200 sec->has_toc_reloc = 1;
5203 /* This relocation describes the C++ object vtable hierarchy.
5204 Reconstruct it for later use during GC. */
5205 case R_PPC64_GNU_VTINHERIT:
5206 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5210 /* This relocation describes which C++ vtable entries are actually
5211 used. Record for later use during GC. */
5212 case R_PPC64_GNU_VTENTRY:
5213 BFD_ASSERT (h != NULL);
5215 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5220 case R_PPC64_REL14_BRTAKEN:
5221 case R_PPC64_REL14_BRNTAKEN:
5223 asection *dest = NULL;
5225 /* Heuristic: If jumping outside our section, chances are
5226 we are going to need a stub. */
5229 /* If the sym is weak it may be overridden later, so
5230 don't assume we know where a weak sym lives. */
5231 if (h->root.type == bfd_link_hash_defined)
5232 dest = h->root.u.def.section;
5236 Elf_Internal_Sym *isym;
5238 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5243 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5247 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5252 if (h != NULL && ifunc == NULL)
5254 /* We may need a .plt entry if the function this reloc
5255 refers to is in a shared lib. */
5256 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5259 if (h->root.root.string[0] == '.'
5260 && h->root.root.string[1] != '\0')
5261 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5262 if (h == tga || h == dottga)
5263 sec->has_tls_reloc = 1;
5267 case R_PPC64_TPREL64:
5268 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5269 if (!info->executable)
5270 info->flags |= DF_STATIC_TLS;
5273 case R_PPC64_DTPMOD64:
5274 if (rel + 1 < rel_end
5275 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5276 && rel[1].r_offset == rel->r_offset + 8)
5277 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5279 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5282 case R_PPC64_DTPREL64:
5283 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5285 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5286 && rel[-1].r_offset == rel->r_offset - 8)
5287 /* This is the second reloc of a dtpmod, dtprel pair.
5288 Don't mark with TLS_DTPREL. */
5292 sec->has_tls_reloc = 1;
5295 struct ppc_link_hash_entry *eh;
5296 eh = (struct ppc_link_hash_entry *) h;
5297 eh->tls_mask |= tls_type;
5300 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5301 rel->r_addend, tls_type))
5304 ppc64_sec = ppc64_elf_section_data (sec);
5305 if (ppc64_sec->sec_type != sec_toc)
5309 /* One extra to simplify get_tls_mask. */
5310 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5311 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5312 if (ppc64_sec->u.toc.symndx == NULL)
5314 amt = sec->size * sizeof (bfd_vma) / 8;
5315 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5316 if (ppc64_sec->u.toc.add == NULL)
5318 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5319 ppc64_sec->sec_type = sec_toc;
5321 BFD_ASSERT (rel->r_offset % 8 == 0);
5322 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5323 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5325 /* Mark the second slot of a GD or LD entry.
5326 -1 to indicate GD and -2 to indicate LD. */
5327 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5328 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5329 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5330 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5333 case R_PPC64_TPREL16:
5334 case R_PPC64_TPREL16_LO:
5335 case R_PPC64_TPREL16_HI:
5336 case R_PPC64_TPREL16_HA:
5337 case R_PPC64_TPREL16_DS:
5338 case R_PPC64_TPREL16_LO_DS:
5339 case R_PPC64_TPREL16_HIGHER:
5340 case R_PPC64_TPREL16_HIGHERA:
5341 case R_PPC64_TPREL16_HIGHEST:
5342 case R_PPC64_TPREL16_HIGHESTA:
5345 if (!info->executable)
5346 info->flags |= DF_STATIC_TLS;
5351 case R_PPC64_ADDR64:
5352 if (opd_sym_map != NULL
5353 && rel + 1 < rel_end
5354 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5358 if (h->root.root.string[0] == '.'
5359 && h->root.root.string[1] != 0
5360 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5363 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5368 Elf_Internal_Sym *isym;
5370 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5375 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5376 if (s != NULL && s != sec)
5377 opd_sym_map[rel->r_offset / 8] = s;
5385 case R_PPC64_ADDR14:
5386 case R_PPC64_ADDR14_BRNTAKEN:
5387 case R_PPC64_ADDR14_BRTAKEN:
5388 case R_PPC64_ADDR16:
5389 case R_PPC64_ADDR16_DS:
5390 case R_PPC64_ADDR16_HA:
5391 case R_PPC64_ADDR16_HI:
5392 case R_PPC64_ADDR16_HIGHER:
5393 case R_PPC64_ADDR16_HIGHERA:
5394 case R_PPC64_ADDR16_HIGHEST:
5395 case R_PPC64_ADDR16_HIGHESTA:
5396 case R_PPC64_ADDR16_LO:
5397 case R_PPC64_ADDR16_LO_DS:
5398 case R_PPC64_ADDR24:
5399 case R_PPC64_ADDR32:
5400 case R_PPC64_UADDR16:
5401 case R_PPC64_UADDR32:
5402 case R_PPC64_UADDR64:
5404 if (h != NULL && !info->shared)
5405 /* We may need a copy reloc. */
5408 /* Don't propagate .opd relocs. */
5409 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5412 /* If we are creating a shared library, and this is a reloc
5413 against a global symbol, or a non PC relative reloc
5414 against a local symbol, then we need to copy the reloc
5415 into the shared library. However, if we are linking with
5416 -Bsymbolic, we do not need to copy a reloc against a
5417 global symbol which is defined in an object we are
5418 including in the link (i.e., DEF_REGULAR is set). At
5419 this point we have not seen all the input files, so it is
5420 possible that DEF_REGULAR is not set now but will be set
5421 later (it is never cleared). In case of a weak definition,
5422 DEF_REGULAR may be cleared later by a strong definition in
5423 a shared library. We account for that possibility below by
5424 storing information in the dyn_relocs field of the hash
5425 table entry. A similar situation occurs when creating
5426 shared libraries and symbol visibility changes render the
5429 If on the other hand, we are creating an executable, we
5430 may need to keep relocations for symbols satisfied by a
5431 dynamic library if we manage to avoid copy relocs for the
5435 && (must_be_dyn_reloc (info, r_type)
5437 && (! info->symbolic
5438 || h->root.type == bfd_link_hash_defweak
5439 || !h->def_regular))))
5440 || (ELIMINATE_COPY_RELOCS
5443 && (h->root.type == bfd_link_hash_defweak
5444 || !h->def_regular))
5448 struct elf_dyn_relocs *p;
5449 struct elf_dyn_relocs **head;
5451 /* We must copy these reloc types into the output file.
5452 Create a reloc section in dynobj and make room for
5456 sreloc = _bfd_elf_make_dynamic_reloc_section
5457 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5463 /* If this is a global symbol, we count the number of
5464 relocations we need for this symbol. */
5467 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5471 /* Track dynamic relocs needed for local syms too.
5472 We really need local syms available to do this
5476 Elf_Internal_Sym *isym;
5478 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5483 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5487 vpp = &elf_section_data (s)->local_dynrel;
5488 head = (struct elf_dyn_relocs **) vpp;
5492 if (p == NULL || p->sec != sec)
5494 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5505 if (!must_be_dyn_reloc (info, r_type))
5518 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5519 of the code entry point, and its section. */
5522 opd_entry_value (asection *opd_sec,
5524 asection **code_sec,
5527 bfd *opd_bfd = opd_sec->owner;
5528 Elf_Internal_Rela *relocs;
5529 Elf_Internal_Rela *lo, *hi, *look;
5532 /* No relocs implies we are linking a --just-symbols object, or looking
5533 at a final linked executable with addr2line or somesuch. */
5534 if (opd_sec->reloc_count == 0)
5538 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5539 return (bfd_vma) -1;
5541 val = bfd_get_64 (opd_bfd, buf);
5542 if (code_sec != NULL)
5544 asection *sec, *likely = NULL;
5545 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5547 && (sec->flags & SEC_LOAD) != 0
5548 && (sec->flags & SEC_ALLOC) != 0)
5553 if (code_off != NULL)
5554 *code_off = val - likely->vma;
5560 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5562 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5564 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5566 /* Go find the opd reloc at the sym address. */
5568 BFD_ASSERT (lo != NULL);
5569 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5573 look = lo + (hi - lo) / 2;
5574 if (look->r_offset < offset)
5576 else if (look->r_offset > offset)
5580 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5582 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5583 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5585 unsigned long symndx = ELF64_R_SYM (look->r_info);
5588 if (symndx < symtab_hdr->sh_info)
5590 Elf_Internal_Sym *sym;
5592 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5595 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5596 symtab_hdr->sh_info,
5597 0, NULL, NULL, NULL);
5600 symtab_hdr->contents = (bfd_byte *) sym;
5604 val = sym->st_value;
5605 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5606 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5610 struct elf_link_hash_entry **sym_hashes;
5611 struct elf_link_hash_entry *rh;
5613 sym_hashes = elf_sym_hashes (opd_bfd);
5614 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5615 rh = elf_follow_link (rh);
5616 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5617 || rh->root.type == bfd_link_hash_defweak);
5618 val = rh->root.u.def.value;
5619 sec = rh->root.u.def.section;
5621 val += look->r_addend;
5622 if (code_off != NULL)
5624 if (code_sec != NULL)
5626 if (sec != NULL && sec->output_section != NULL)
5627 val += sec->output_section->vma + sec->output_offset;
5636 /* Return TRUE iff the ELF symbol SYM might be a function. Set *CODE_SEC
5637 and *CODE_OFF to the function's entry point. */
5640 ppc64_elf_maybe_function_sym (const asymbol *sym,
5641 asection **code_sec, bfd_vma *code_off)
5643 if (_bfd_elf_maybe_function_sym (sym, code_sec, code_off))
5645 if (strcmp (sym->section->name, ".opd") == 0)
5646 opd_entry_value (sym->section, sym->value, code_sec, code_off);
5652 /* Return true if symbol is defined in a regular object file. */
5655 is_static_defined (struct elf_link_hash_entry *h)
5657 return ((h->root.type == bfd_link_hash_defined
5658 || h->root.type == bfd_link_hash_defweak)
5659 && h->root.u.def.section != NULL
5660 && h->root.u.def.section->output_section != NULL);
5663 /* If FDH is a function descriptor symbol, return the associated code
5664 entry symbol if it is defined. Return NULL otherwise. */
5666 static struct ppc_link_hash_entry *
5667 defined_code_entry (struct ppc_link_hash_entry *fdh)
5669 if (fdh->is_func_descriptor)
5671 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5672 if (fh->elf.root.type == bfd_link_hash_defined
5673 || fh->elf.root.type == bfd_link_hash_defweak)
5679 /* If FH is a function code entry symbol, return the associated
5680 function descriptor symbol if it is defined. Return NULL otherwise. */
5682 static struct ppc_link_hash_entry *
5683 defined_func_desc (struct ppc_link_hash_entry *fh)
5686 && fh->oh->is_func_descriptor)
5688 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5689 if (fdh->elf.root.type == bfd_link_hash_defined
5690 || fdh->elf.root.type == bfd_link_hash_defweak)
5696 /* Mark all our entry sym sections, both opd and code section. */
5699 ppc64_elf_gc_keep (struct bfd_link_info *info)
5701 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5702 struct bfd_sym_chain *sym;
5707 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5709 struct ppc_link_hash_entry *eh, *fh;
5712 eh = (struct ppc_link_hash_entry *)
5713 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5716 if (eh->elf.root.type != bfd_link_hash_defined
5717 && eh->elf.root.type != bfd_link_hash_defweak)
5720 fh = defined_code_entry (eh);
5723 sec = fh->elf.root.u.def.section;
5724 sec->flags |= SEC_KEEP;
5726 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5727 && opd_entry_value (eh->elf.root.u.def.section,
5728 eh->elf.root.u.def.value,
5729 &sec, NULL) != (bfd_vma) -1)
5730 sec->flags |= SEC_KEEP;
5732 sec = eh->elf.root.u.def.section;
5733 sec->flags |= SEC_KEEP;
5737 /* Mark sections containing dynamically referenced symbols. When
5738 building shared libraries, we must assume that any visible symbol is
5742 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5744 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5745 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5746 struct ppc_link_hash_entry *fdh;
5748 /* Dynamic linking info is on the func descriptor sym. */
5749 fdh = defined_func_desc (eh);
5753 if ((eh->elf.root.type == bfd_link_hash_defined
5754 || eh->elf.root.type == bfd_link_hash_defweak)
5755 && (eh->elf.ref_dynamic
5756 || (!info->executable
5757 && eh->elf.def_regular
5758 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5759 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
5760 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
5761 || !bfd_hide_sym_by_version (info->version_info,
5762 eh->elf.root.root.string)))))
5765 struct ppc_link_hash_entry *fh;
5767 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5769 /* Function descriptor syms cause the associated
5770 function code sym section to be marked. */
5771 fh = defined_code_entry (eh);
5774 code_sec = fh->elf.root.u.def.section;
5775 code_sec->flags |= SEC_KEEP;
5777 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5778 && opd_entry_value (eh->elf.root.u.def.section,
5779 eh->elf.root.u.def.value,
5780 &code_sec, NULL) != (bfd_vma) -1)
5781 code_sec->flags |= SEC_KEEP;
5787 /* Return the section that should be marked against GC for a given
5791 ppc64_elf_gc_mark_hook (asection *sec,
5792 struct bfd_link_info *info,
5793 Elf_Internal_Rela *rel,
5794 struct elf_link_hash_entry *h,
5795 Elf_Internal_Sym *sym)
5799 /* Syms return NULL if we're marking .opd, so we avoid marking all
5800 function sections, as all functions are referenced in .opd. */
5802 if (get_opd_info (sec) != NULL)
5807 enum elf_ppc64_reloc_type r_type;
5808 struct ppc_link_hash_entry *eh, *fh, *fdh;
5810 r_type = ELF64_R_TYPE (rel->r_info);
5813 case R_PPC64_GNU_VTINHERIT:
5814 case R_PPC64_GNU_VTENTRY:
5818 switch (h->root.type)
5820 case bfd_link_hash_defined:
5821 case bfd_link_hash_defweak:
5822 eh = (struct ppc_link_hash_entry *) h;
5823 fdh = defined_func_desc (eh);
5827 /* Function descriptor syms cause the associated
5828 function code sym section to be marked. */
5829 fh = defined_code_entry (eh);
5832 /* They also mark their opd section. */
5833 eh->elf.root.u.def.section->gc_mark = 1;
5835 rsec = fh->elf.root.u.def.section;
5837 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5838 && opd_entry_value (eh->elf.root.u.def.section,
5839 eh->elf.root.u.def.value,
5840 &rsec, NULL) != (bfd_vma) -1)
5841 eh->elf.root.u.def.section->gc_mark = 1;
5843 rsec = h->root.u.def.section;
5846 case bfd_link_hash_common:
5847 rsec = h->root.u.c.p->section;
5851 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5857 struct _opd_sec_data *opd;
5859 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5860 opd = get_opd_info (rsec);
5861 if (opd != NULL && opd->func_sec != NULL)
5865 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5872 /* Update the .got, .plt. and dynamic reloc reference counts for the
5873 section being removed. */
5876 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5877 asection *sec, const Elf_Internal_Rela *relocs)
5879 struct ppc_link_hash_table *htab;
5880 Elf_Internal_Shdr *symtab_hdr;
5881 struct elf_link_hash_entry **sym_hashes;
5882 struct got_entry **local_got_ents;
5883 const Elf_Internal_Rela *rel, *relend;
5885 if (info->relocatable)
5888 if ((sec->flags & SEC_ALLOC) == 0)
5891 elf_section_data (sec)->local_dynrel = NULL;
5893 htab = ppc_hash_table (info);
5897 symtab_hdr = &elf_symtab_hdr (abfd);
5898 sym_hashes = elf_sym_hashes (abfd);
5899 local_got_ents = elf_local_got_ents (abfd);
5901 relend = relocs + sec->reloc_count;
5902 for (rel = relocs; rel < relend; rel++)
5904 unsigned long r_symndx;
5905 enum elf_ppc64_reloc_type r_type;
5906 struct elf_link_hash_entry *h = NULL;
5907 unsigned char tls_type = 0;
5909 r_symndx = ELF64_R_SYM (rel->r_info);
5910 r_type = ELF64_R_TYPE (rel->r_info);
5911 if (r_symndx >= symtab_hdr->sh_info)
5913 struct ppc_link_hash_entry *eh;
5914 struct elf_dyn_relocs **pp;
5915 struct elf_dyn_relocs *p;
5917 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5918 h = elf_follow_link (h);
5919 eh = (struct ppc_link_hash_entry *) h;
5921 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5924 /* Everything must go for SEC. */
5930 if (is_branch_reloc (r_type))
5932 struct plt_entry **ifunc = NULL;
5935 if (h->type == STT_GNU_IFUNC)
5936 ifunc = &h->plt.plist;
5938 else if (local_got_ents != NULL)
5940 struct plt_entry **local_plt = (struct plt_entry **)
5941 (local_got_ents + symtab_hdr->sh_info);
5942 unsigned char *local_got_tls_masks = (unsigned char *)
5943 (local_plt + symtab_hdr->sh_info);
5944 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5945 ifunc = local_plt + r_symndx;
5949 struct plt_entry *ent;
5951 for (ent = *ifunc; ent != NULL; ent = ent->next)
5952 if (ent->addend == rel->r_addend)
5956 if (ent->plt.refcount > 0)
5957 ent->plt.refcount -= 1;
5964 case R_PPC64_GOT_TLSLD16:
5965 case R_PPC64_GOT_TLSLD16_LO:
5966 case R_PPC64_GOT_TLSLD16_HI:
5967 case R_PPC64_GOT_TLSLD16_HA:
5968 tls_type = TLS_TLS | TLS_LD;
5971 case R_PPC64_GOT_TLSGD16:
5972 case R_PPC64_GOT_TLSGD16_LO:
5973 case R_PPC64_GOT_TLSGD16_HI:
5974 case R_PPC64_GOT_TLSGD16_HA:
5975 tls_type = TLS_TLS | TLS_GD;
5978 case R_PPC64_GOT_TPREL16_DS:
5979 case R_PPC64_GOT_TPREL16_LO_DS:
5980 case R_PPC64_GOT_TPREL16_HI:
5981 case R_PPC64_GOT_TPREL16_HA:
5982 tls_type = TLS_TLS | TLS_TPREL;
5985 case R_PPC64_GOT_DTPREL16_DS:
5986 case R_PPC64_GOT_DTPREL16_LO_DS:
5987 case R_PPC64_GOT_DTPREL16_HI:
5988 case R_PPC64_GOT_DTPREL16_HA:
5989 tls_type = TLS_TLS | TLS_DTPREL;
5993 case R_PPC64_GOT16_DS:
5994 case R_PPC64_GOT16_HA:
5995 case R_PPC64_GOT16_HI:
5996 case R_PPC64_GOT16_LO:
5997 case R_PPC64_GOT16_LO_DS:
6000 struct got_entry *ent;
6005 ent = local_got_ents[r_symndx];
6007 for (; ent != NULL; ent = ent->next)
6008 if (ent->addend == rel->r_addend
6009 && ent->owner == abfd
6010 && ent->tls_type == tls_type)
6014 if (ent->got.refcount > 0)
6015 ent->got.refcount -= 1;
6019 case R_PPC64_PLT16_HA:
6020 case R_PPC64_PLT16_HI:
6021 case R_PPC64_PLT16_LO:
6025 case R_PPC64_REL14_BRNTAKEN:
6026 case R_PPC64_REL14_BRTAKEN:
6030 struct plt_entry *ent;
6032 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6033 if (ent->addend == rel->r_addend)
6035 if (ent != NULL && ent->plt.refcount > 0)
6036 ent->plt.refcount -= 1;
6047 /* The maximum size of .sfpr. */
6048 #define SFPR_MAX (218*4)
6050 struct sfpr_def_parms
6052 const char name[12];
6053 unsigned char lo, hi;
6054 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6055 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6058 /* Auto-generate _save*, _rest* functions in .sfpr. */
6061 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6063 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6065 size_t len = strlen (parm->name);
6066 bfd_boolean writing = FALSE;
6072 memcpy (sym, parm->name, len);
6075 for (i = parm->lo; i <= parm->hi; i++)
6077 struct elf_link_hash_entry *h;
6079 sym[len + 0] = i / 10 + '0';
6080 sym[len + 1] = i % 10 + '0';
6081 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6085 h->root.type = bfd_link_hash_defined;
6086 h->root.u.def.section = htab->sfpr;
6087 h->root.u.def.value = htab->sfpr->size;
6090 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6092 if (htab->sfpr->contents == NULL)
6094 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6095 if (htab->sfpr->contents == NULL)
6101 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6103 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6105 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6106 htab->sfpr->size = p - htab->sfpr->contents;
6114 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6116 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6121 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6123 p = savegpr0 (abfd, p, r);
6124 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6126 bfd_put_32 (abfd, BLR, p);
6131 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6133 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6138 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6140 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6142 p = restgpr0 (abfd, p, r);
6143 bfd_put_32 (abfd, MTLR_R0, p);
6147 p = restgpr0 (abfd, p, 30);
6148 p = restgpr0 (abfd, p, 31);
6150 bfd_put_32 (abfd, BLR, p);
6155 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6157 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6162 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6164 p = savegpr1 (abfd, p, r);
6165 bfd_put_32 (abfd, BLR, p);
6170 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6172 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6177 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6179 p = restgpr1 (abfd, p, r);
6180 bfd_put_32 (abfd, BLR, p);
6185 savefpr (bfd *abfd, bfd_byte *p, int r)
6187 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6192 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6194 p = savefpr (abfd, p, r);
6195 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6197 bfd_put_32 (abfd, BLR, p);
6202 restfpr (bfd *abfd, bfd_byte *p, int r)
6204 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6209 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6211 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6213 p = restfpr (abfd, p, r);
6214 bfd_put_32 (abfd, MTLR_R0, p);
6218 p = restfpr (abfd, p, 30);
6219 p = restfpr (abfd, p, 31);
6221 bfd_put_32 (abfd, BLR, p);
6226 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6228 p = savefpr (abfd, p, r);
6229 bfd_put_32 (abfd, BLR, p);
6234 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6236 p = restfpr (abfd, p, r);
6237 bfd_put_32 (abfd, BLR, p);
6242 savevr (bfd *abfd, bfd_byte *p, int r)
6244 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6246 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6251 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6253 p = savevr (abfd, p, r);
6254 bfd_put_32 (abfd, BLR, p);
6259 restvr (bfd *abfd, bfd_byte *p, int r)
6261 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6263 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6268 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6270 p = restvr (abfd, p, r);
6271 bfd_put_32 (abfd, BLR, p);
6275 /* Called via elf_link_hash_traverse to transfer dynamic linking
6276 information on function code symbol entries to their corresponding
6277 function descriptor symbol entries. */
6280 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6282 struct bfd_link_info *info;
6283 struct ppc_link_hash_table *htab;
6284 struct plt_entry *ent;
6285 struct ppc_link_hash_entry *fh;
6286 struct ppc_link_hash_entry *fdh;
6287 bfd_boolean force_local;
6289 fh = (struct ppc_link_hash_entry *) h;
6290 if (fh->elf.root.type == bfd_link_hash_indirect)
6294 htab = ppc_hash_table (info);
6298 /* Resolve undefined references to dot-symbols as the value
6299 in the function descriptor, if we have one in a regular object.
6300 This is to satisfy cases like ".quad .foo". Calls to functions
6301 in dynamic objects are handled elsewhere. */
6302 if (fh->elf.root.type == bfd_link_hash_undefweak
6303 && fh->was_undefined
6304 && (fdh = defined_func_desc (fh)) != NULL
6305 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6306 && opd_entry_value (fdh->elf.root.u.def.section,
6307 fdh->elf.root.u.def.value,
6308 &fh->elf.root.u.def.section,
6309 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6311 fh->elf.root.type = fdh->elf.root.type;
6312 fh->elf.forced_local = 1;
6313 fh->elf.def_regular = fdh->elf.def_regular;
6314 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6317 /* If this is a function code symbol, transfer dynamic linking
6318 information to the function descriptor symbol. */
6322 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6323 if (ent->plt.refcount > 0)
6326 || fh->elf.root.root.string[0] != '.'
6327 || fh->elf.root.root.string[1] == '\0')
6330 /* Find the corresponding function descriptor symbol. Create it
6331 as undefined if necessary. */
6333 fdh = lookup_fdh (fh, htab);
6335 && !info->executable
6336 && (fh->elf.root.type == bfd_link_hash_undefined
6337 || fh->elf.root.type == bfd_link_hash_undefweak))
6339 fdh = make_fdh (info, fh);
6344 /* Fake function descriptors are made undefweak. If the function
6345 code symbol is strong undefined, make the fake sym the same.
6346 If the function code symbol is defined, then force the fake
6347 descriptor local; We can't support overriding of symbols in a
6348 shared library on a fake descriptor. */
6352 && fdh->elf.root.type == bfd_link_hash_undefweak)
6354 if (fh->elf.root.type == bfd_link_hash_undefined)
6356 fdh->elf.root.type = bfd_link_hash_undefined;
6357 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6359 else if (fh->elf.root.type == bfd_link_hash_defined
6360 || fh->elf.root.type == bfd_link_hash_defweak)
6362 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6367 && !fdh->elf.forced_local
6368 && (!info->executable
6369 || fdh->elf.def_dynamic
6370 || fdh->elf.ref_dynamic
6371 || (fdh->elf.root.type == bfd_link_hash_undefweak
6372 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6374 if (fdh->elf.dynindx == -1)
6375 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6377 fdh->elf.ref_regular |= fh->elf.ref_regular;
6378 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6379 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6380 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6381 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6383 move_plt_plist (fh, fdh);
6384 fdh->elf.needs_plt = 1;
6386 fdh->is_func_descriptor = 1;
6391 /* Now that the info is on the function descriptor, clear the
6392 function code sym info. Any function code syms for which we
6393 don't have a definition in a regular file, we force local.
6394 This prevents a shared library from exporting syms that have
6395 been imported from another library. Function code syms that
6396 are really in the library we must leave global to prevent the
6397 linker dragging in a definition from a static library. */
6398 force_local = (!fh->elf.def_regular
6400 || !fdh->elf.def_regular
6401 || fdh->elf.forced_local);
6402 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6407 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6408 this hook to a) provide some gcc support functions, and b) transfer
6409 dynamic linking information gathered so far on function code symbol
6410 entries, to their corresponding function descriptor symbol entries. */
6413 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6414 struct bfd_link_info *info)
6416 struct ppc_link_hash_table *htab;
6418 const struct sfpr_def_parms funcs[] =
6420 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6421 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6422 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6423 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6424 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6425 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6426 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6427 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6428 { "._savef", 14, 31, savefpr, savefpr1_tail },
6429 { "._restf", 14, 31, restfpr, restfpr1_tail },
6430 { "_savevr_", 20, 31, savevr, savevr_tail },
6431 { "_restvr_", 20, 31, restvr, restvr_tail }
6434 htab = ppc_hash_table (info);
6438 if (htab->sfpr == NULL)
6439 /* We don't have any relocs. */
6442 /* Provide any missing _save* and _rest* functions. */
6443 htab->sfpr->size = 0;
6444 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6445 if (!sfpr_define (info, &funcs[i]))
6448 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6450 if (htab->sfpr->size == 0)
6451 htab->sfpr->flags |= SEC_EXCLUDE;
6456 /* Adjust a symbol defined by a dynamic object and referenced by a
6457 regular object. The current definition is in some section of the
6458 dynamic object, but we're not including those sections. We have to
6459 change the definition to something the rest of the link can
6463 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6464 struct elf_link_hash_entry *h)
6466 struct ppc_link_hash_table *htab;
6469 htab = ppc_hash_table (info);
6473 /* Deal with function syms. */
6474 if (h->type == STT_FUNC
6475 || h->type == STT_GNU_IFUNC
6478 /* Clear procedure linkage table information for any symbol that
6479 won't need a .plt entry. */
6480 struct plt_entry *ent;
6481 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6482 if (ent->plt.refcount > 0)
6485 || (h->type != STT_GNU_IFUNC
6486 && (SYMBOL_CALLS_LOCAL (info, h)
6487 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6488 && h->root.type == bfd_link_hash_undefweak))))
6490 h->plt.plist = NULL;
6495 h->plt.plist = NULL;
6497 /* If this is a weak symbol, and there is a real definition, the
6498 processor independent code will have arranged for us to see the
6499 real definition first, and we can just use the same value. */
6500 if (h->u.weakdef != NULL)
6502 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6503 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6504 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6505 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6506 if (ELIMINATE_COPY_RELOCS)
6507 h->non_got_ref = h->u.weakdef->non_got_ref;
6511 /* If we are creating a shared library, we must presume that the
6512 only references to the symbol are via the global offset table.
6513 For such cases we need not do anything here; the relocations will
6514 be handled correctly by relocate_section. */
6518 /* If there are no references to this symbol that do not use the
6519 GOT, we don't need to generate a copy reloc. */
6520 if (!h->non_got_ref)
6523 /* Don't generate a copy reloc for symbols defined in the executable. */
6524 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6527 if (ELIMINATE_COPY_RELOCS)
6529 struct ppc_link_hash_entry * eh;
6530 struct elf_dyn_relocs *p;
6532 eh = (struct ppc_link_hash_entry *) h;
6533 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6535 s = p->sec->output_section;
6536 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6540 /* If we didn't find any dynamic relocs in read-only sections, then
6541 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6549 if (h->plt.plist != NULL)
6551 /* We should never get here, but unfortunately there are versions
6552 of gcc out there that improperly (for this ABI) put initialized
6553 function pointers, vtable refs and suchlike in read-only
6554 sections. Allow them to proceed, but warn that this might
6555 break at runtime. */
6556 info->callbacks->einfo
6557 (_("%P: copy reloc against `%s' requires lazy plt linking; "
6558 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6559 h->root.root.string);
6562 /* This is a reference to a symbol defined by a dynamic object which
6563 is not a function. */
6565 /* We must allocate the symbol in our .dynbss section, which will
6566 become part of the .bss section of the executable. There will be
6567 an entry for this symbol in the .dynsym section. The dynamic
6568 object will contain position independent code, so all references
6569 from the dynamic object to this symbol will go through the global
6570 offset table. The dynamic linker will use the .dynsym entry to
6571 determine the address it must put in the global offset table, so
6572 both the dynamic object and the regular object will refer to the
6573 same memory location for the variable. */
6575 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6576 to copy the initial value out of the dynamic object and into the
6577 runtime process image. We need to remember the offset into the
6578 .rela.bss section we are going to use. */
6579 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6581 htab->relbss->size += sizeof (Elf64_External_Rela);
6587 return _bfd_elf_adjust_dynamic_copy (h, s);
6590 /* If given a function descriptor symbol, hide both the function code
6591 sym and the descriptor. */
6593 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6594 struct elf_link_hash_entry *h,
6595 bfd_boolean force_local)
6597 struct ppc_link_hash_entry *eh;
6598 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6600 eh = (struct ppc_link_hash_entry *) h;
6601 if (eh->is_func_descriptor)
6603 struct ppc_link_hash_entry *fh = eh->oh;
6608 struct ppc_link_hash_table *htab;
6611 /* We aren't supposed to use alloca in BFD because on
6612 systems which do not have alloca the version in libiberty
6613 calls xmalloc, which might cause the program to crash
6614 when it runs out of memory. This function doesn't have a
6615 return status, so there's no way to gracefully return an
6616 error. So cheat. We know that string[-1] can be safely
6617 accessed; It's either a string in an ELF string table,
6618 or allocated in an objalloc structure. */
6620 p = eh->elf.root.root.string - 1;
6623 htab = ppc_hash_table (info);
6627 fh = (struct ppc_link_hash_entry *)
6628 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6631 /* Unfortunately, if it so happens that the string we were
6632 looking for was allocated immediately before this string,
6633 then we overwrote the string terminator. That's the only
6634 reason the lookup should fail. */
6637 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6638 while (q >= eh->elf.root.root.string && *q == *p)
6640 if (q < eh->elf.root.root.string && *p == '.')
6641 fh = (struct ppc_link_hash_entry *)
6642 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6651 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6656 get_sym_h (struct elf_link_hash_entry **hp,
6657 Elf_Internal_Sym **symp,
6659 unsigned char **tls_maskp,
6660 Elf_Internal_Sym **locsymsp,
6661 unsigned long r_symndx,
6664 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6666 if (r_symndx >= symtab_hdr->sh_info)
6668 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6669 struct elf_link_hash_entry *h;
6671 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6672 h = elf_follow_link (h);
6680 if (symsecp != NULL)
6682 asection *symsec = NULL;
6683 if (h->root.type == bfd_link_hash_defined
6684 || h->root.type == bfd_link_hash_defweak)
6685 symsec = h->root.u.def.section;
6689 if (tls_maskp != NULL)
6691 struct ppc_link_hash_entry *eh;
6693 eh = (struct ppc_link_hash_entry *) h;
6694 *tls_maskp = &eh->tls_mask;
6699 Elf_Internal_Sym *sym;
6700 Elf_Internal_Sym *locsyms = *locsymsp;
6702 if (locsyms == NULL)
6704 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6705 if (locsyms == NULL)
6706 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6707 symtab_hdr->sh_info,
6708 0, NULL, NULL, NULL);
6709 if (locsyms == NULL)
6711 *locsymsp = locsyms;
6713 sym = locsyms + r_symndx;
6721 if (symsecp != NULL)
6722 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6724 if (tls_maskp != NULL)
6726 struct got_entry **lgot_ents;
6727 unsigned char *tls_mask;
6730 lgot_ents = elf_local_got_ents (ibfd);
6731 if (lgot_ents != NULL)
6733 struct plt_entry **local_plt = (struct plt_entry **)
6734 (lgot_ents + symtab_hdr->sh_info);
6735 unsigned char *lgot_masks = (unsigned char *)
6736 (local_plt + symtab_hdr->sh_info);
6737 tls_mask = &lgot_masks[r_symndx];
6739 *tls_maskp = tls_mask;
6745 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6746 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6747 type suitable for optimization, and 1 otherwise. */
6750 get_tls_mask (unsigned char **tls_maskp,
6751 unsigned long *toc_symndx,
6752 bfd_vma *toc_addend,
6753 Elf_Internal_Sym **locsymsp,
6754 const Elf_Internal_Rela *rel,
6757 unsigned long r_symndx;
6759 struct elf_link_hash_entry *h;
6760 Elf_Internal_Sym *sym;
6764 r_symndx = ELF64_R_SYM (rel->r_info);
6765 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6768 if ((*tls_maskp != NULL && **tls_maskp != 0)
6770 || ppc64_elf_section_data (sec) == NULL
6771 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6774 /* Look inside a TOC section too. */
6777 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6778 off = h->root.u.def.value;
6781 off = sym->st_value;
6782 off += rel->r_addend;
6783 BFD_ASSERT (off % 8 == 0);
6784 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6785 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6786 if (toc_symndx != NULL)
6787 *toc_symndx = r_symndx;
6788 if (toc_addend != NULL)
6789 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6790 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6792 if ((h == NULL || is_static_defined (h))
6793 && (next_r == -1 || next_r == -2))
6798 /* Find (or create) an entry in the tocsave hash table. */
6800 static struct tocsave_entry *
6801 tocsave_find (struct ppc_link_hash_table *htab,
6802 enum insert_option insert,
6803 Elf_Internal_Sym **local_syms,
6804 const Elf_Internal_Rela *irela,
6807 unsigned long r_indx;
6808 struct elf_link_hash_entry *h;
6809 Elf_Internal_Sym *sym;
6810 struct tocsave_entry ent, *p;
6812 struct tocsave_entry **slot;
6814 r_indx = ELF64_R_SYM (irela->r_info);
6815 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
6817 if (ent.sec == NULL || ent.sec->output_section == NULL)
6819 (*_bfd_error_handler)
6820 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6825 ent.offset = h->root.u.def.value;
6827 ent.offset = sym->st_value;
6828 ent.offset += irela->r_addend;
6830 hash = tocsave_htab_hash (&ent);
6831 slot = ((struct tocsave_entry **)
6832 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
6838 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
6847 /* Adjust all global syms defined in opd sections. In gcc generated
6848 code for the old ABI, these will already have been done. */
6851 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6853 struct ppc_link_hash_entry *eh;
6855 struct _opd_sec_data *opd;
6857 if (h->root.type == bfd_link_hash_indirect)
6860 if (h->root.type != bfd_link_hash_defined
6861 && h->root.type != bfd_link_hash_defweak)
6864 eh = (struct ppc_link_hash_entry *) h;
6865 if (eh->adjust_done)
6868 sym_sec = eh->elf.root.u.def.section;
6869 opd = get_opd_info (sym_sec);
6870 if (opd != NULL && opd->adjust != NULL)
6872 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6875 /* This entry has been deleted. */
6876 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6879 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6880 if (elf_discarded_section (dsec))
6882 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6886 eh->elf.root.u.def.value = 0;
6887 eh->elf.root.u.def.section = dsec;
6890 eh->elf.root.u.def.value += adjust;
6891 eh->adjust_done = 1;
6896 /* Handles decrementing dynamic reloc counts for the reloc specified by
6897 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6898 have already been determined. */
6901 dec_dynrel_count (bfd_vma r_info,
6903 struct bfd_link_info *info,
6904 Elf_Internal_Sym **local_syms,
6905 struct elf_link_hash_entry *h,
6908 enum elf_ppc64_reloc_type r_type;
6909 struct elf_dyn_relocs *p;
6910 struct elf_dyn_relocs **pp;
6912 /* Can this reloc be dynamic? This switch, and later tests here
6913 should be kept in sync with the code in check_relocs. */
6914 r_type = ELF64_R_TYPE (r_info);
6920 case R_PPC64_TPREL16:
6921 case R_PPC64_TPREL16_LO:
6922 case R_PPC64_TPREL16_HI:
6923 case R_PPC64_TPREL16_HA:
6924 case R_PPC64_TPREL16_DS:
6925 case R_PPC64_TPREL16_LO_DS:
6926 case R_PPC64_TPREL16_HIGHER:
6927 case R_PPC64_TPREL16_HIGHERA:
6928 case R_PPC64_TPREL16_HIGHEST:
6929 case R_PPC64_TPREL16_HIGHESTA:
6933 case R_PPC64_TPREL64:
6934 case R_PPC64_DTPMOD64:
6935 case R_PPC64_DTPREL64:
6936 case R_PPC64_ADDR64:
6940 case R_PPC64_ADDR14:
6941 case R_PPC64_ADDR14_BRNTAKEN:
6942 case R_PPC64_ADDR14_BRTAKEN:
6943 case R_PPC64_ADDR16:
6944 case R_PPC64_ADDR16_DS:
6945 case R_PPC64_ADDR16_HA:
6946 case R_PPC64_ADDR16_HI:
6947 case R_PPC64_ADDR16_HIGHER:
6948 case R_PPC64_ADDR16_HIGHERA:
6949 case R_PPC64_ADDR16_HIGHEST:
6950 case R_PPC64_ADDR16_HIGHESTA:
6951 case R_PPC64_ADDR16_LO:
6952 case R_PPC64_ADDR16_LO_DS:
6953 case R_PPC64_ADDR24:
6954 case R_PPC64_ADDR32:
6955 case R_PPC64_UADDR16:
6956 case R_PPC64_UADDR32:
6957 case R_PPC64_UADDR64:
6962 if (local_syms != NULL)
6964 unsigned long r_symndx;
6965 Elf_Internal_Sym *sym;
6966 bfd *ibfd = sec->owner;
6968 r_symndx = ELF64_R_SYM (r_info);
6969 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6974 && (must_be_dyn_reloc (info, r_type)
6977 || h->root.type == bfd_link_hash_defweak
6978 || !h->def_regular))))
6979 || (ELIMINATE_COPY_RELOCS
6982 && (h->root.type == bfd_link_hash_defweak
6983 || !h->def_regular)))
6989 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6992 if (sym_sec != NULL)
6994 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6995 pp = (struct elf_dyn_relocs **) vpp;
6999 void *vpp = &elf_section_data (sec)->local_dynrel;
7000 pp = (struct elf_dyn_relocs **) vpp;
7003 /* elf_gc_sweep may have already removed all dyn relocs associated
7004 with local syms for a given section. Don't report a dynreloc
7010 while ((p = *pp) != NULL)
7014 if (!must_be_dyn_reloc (info, r_type))
7024 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7026 bfd_set_error (bfd_error_bad_value);
7030 /* Remove unused Official Procedure Descriptor entries. Currently we
7031 only remove those associated with functions in discarded link-once
7032 sections, or weakly defined functions that have been overridden. It
7033 would be possible to remove many more entries for statically linked
7037 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7040 bfd_boolean some_edited = FALSE;
7041 asection *need_pad = NULL;
7043 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7046 Elf_Internal_Rela *relstart, *rel, *relend;
7047 Elf_Internal_Shdr *symtab_hdr;
7048 Elf_Internal_Sym *local_syms;
7050 struct _opd_sec_data *opd;
7051 bfd_boolean need_edit, add_aux_fields;
7052 bfd_size_type cnt_16b = 0;
7054 if (!is_ppc64_elf (ibfd))
7057 sec = bfd_get_section_by_name (ibfd, ".opd");
7058 if (sec == NULL || sec->size == 0)
7061 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
7064 if (sec->output_section == bfd_abs_section_ptr)
7067 /* Look through the section relocs. */
7068 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7072 symtab_hdr = &elf_symtab_hdr (ibfd);
7074 /* Read the relocations. */
7075 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7077 if (relstart == NULL)
7080 /* First run through the relocs to check they are sane, and to
7081 determine whether we need to edit this opd section. */
7085 relend = relstart + sec->reloc_count;
7086 for (rel = relstart; rel < relend; )
7088 enum elf_ppc64_reloc_type r_type;
7089 unsigned long r_symndx;
7091 struct elf_link_hash_entry *h;
7092 Elf_Internal_Sym *sym;
7094 /* .opd contains a regular array of 16 or 24 byte entries. We're
7095 only interested in the reloc pointing to a function entry
7097 if (rel->r_offset != offset
7098 || rel + 1 >= relend
7099 || (rel + 1)->r_offset != offset + 8)
7101 /* If someone messes with .opd alignment then after a
7102 "ld -r" we might have padding in the middle of .opd.
7103 Also, there's nothing to prevent someone putting
7104 something silly in .opd with the assembler. No .opd
7105 optimization for them! */
7107 (*_bfd_error_handler)
7108 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7113 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7114 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7116 (*_bfd_error_handler)
7117 (_("%B: unexpected reloc type %u in .opd section"),
7123 r_symndx = ELF64_R_SYM (rel->r_info);
7124 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7128 if (sym_sec == NULL || sym_sec->owner == NULL)
7130 const char *sym_name;
7132 sym_name = h->root.root.string;
7134 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7137 (*_bfd_error_handler)
7138 (_("%B: undefined sym `%s' in .opd section"),
7144 /* opd entries are always for functions defined in the
7145 current input bfd. If the symbol isn't defined in the
7146 input bfd, then we won't be using the function in this
7147 bfd; It must be defined in a linkonce section in another
7148 bfd, or is weak. It's also possible that we are
7149 discarding the function due to a linker script /DISCARD/,
7150 which we test for via the output_section. */
7151 if (sym_sec->owner != ibfd
7152 || sym_sec->output_section == bfd_abs_section_ptr)
7157 || (rel + 1 == relend && rel->r_offset == offset + 16))
7159 if (sec->size == offset + 24)
7164 if (rel == relend && sec->size == offset + 16)
7172 if (rel->r_offset == offset + 24)
7174 else if (rel->r_offset != offset + 16)
7176 else if (rel + 1 < relend
7177 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7178 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7183 else if (rel + 2 < relend
7184 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7185 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7194 add_aux_fields = non_overlapping && cnt_16b > 0;
7196 if (need_edit || add_aux_fields)
7198 Elf_Internal_Rela *write_rel;
7199 Elf_Internal_Shdr *rel_hdr;
7200 bfd_byte *rptr, *wptr;
7201 bfd_byte *new_contents;
7206 new_contents = NULL;
7207 amt = sec->size * sizeof (long) / 8;
7208 opd = &ppc64_elf_section_data (sec)->u.opd;
7209 opd->adjust = bfd_zalloc (sec->owner, amt);
7210 if (opd->adjust == NULL)
7212 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7214 /* This seems a waste of time as input .opd sections are all
7215 zeros as generated by gcc, but I suppose there's no reason
7216 this will always be so. We might start putting something in
7217 the third word of .opd entries. */
7218 if ((sec->flags & SEC_IN_MEMORY) == 0)
7221 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7226 if (local_syms != NULL
7227 && symtab_hdr->contents != (unsigned char *) local_syms)
7229 if (elf_section_data (sec)->relocs != relstart)
7233 sec->contents = loc;
7234 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7237 elf_section_data (sec)->relocs = relstart;
7239 new_contents = sec->contents;
7242 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7243 if (new_contents == NULL)
7247 wptr = new_contents;
7248 rptr = sec->contents;
7250 write_rel = relstart;
7254 for (rel = relstart; rel < relend; rel++)
7256 unsigned long r_symndx;
7258 struct elf_link_hash_entry *h;
7259 Elf_Internal_Sym *sym;
7261 r_symndx = ELF64_R_SYM (rel->r_info);
7262 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7266 if (rel->r_offset == offset)
7268 struct ppc_link_hash_entry *fdh = NULL;
7270 /* See if the .opd entry is full 24 byte or
7271 16 byte (with fd_aux entry overlapped with next
7274 if ((rel + 2 == relend && sec->size == offset + 16)
7275 || (rel + 3 < relend
7276 && rel[2].r_offset == offset + 16
7277 && rel[3].r_offset == offset + 24
7278 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7279 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7283 && h->root.root.string[0] == '.')
7285 struct ppc_link_hash_table *htab;
7287 htab = ppc_hash_table (info);
7289 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7292 && fdh->elf.root.type != bfd_link_hash_defined
7293 && fdh->elf.root.type != bfd_link_hash_defweak)
7297 skip = (sym_sec->owner != ibfd
7298 || sym_sec->output_section == bfd_abs_section_ptr);
7301 if (fdh != NULL && sym_sec->owner == ibfd)
7303 /* Arrange for the function descriptor sym
7305 fdh->elf.root.u.def.value = 0;
7306 fdh->elf.root.u.def.section = sym_sec;
7308 opd->adjust[rel->r_offset / 8] = -1;
7312 /* We'll be keeping this opd entry. */
7316 /* Redefine the function descriptor symbol to
7317 this location in the opd section. It is
7318 necessary to update the value here rather
7319 than using an array of adjustments as we do
7320 for local symbols, because various places
7321 in the generic ELF code use the value
7322 stored in u.def.value. */
7323 fdh->elf.root.u.def.value = wptr - new_contents;
7324 fdh->adjust_done = 1;
7327 /* Local syms are a bit tricky. We could
7328 tweak them as they can be cached, but
7329 we'd need to look through the local syms
7330 for the function descriptor sym which we
7331 don't have at the moment. So keep an
7332 array of adjustments. */
7333 opd->adjust[rel->r_offset / 8]
7334 = (wptr - new_contents) - (rptr - sec->contents);
7337 memcpy (wptr, rptr, opd_ent_size);
7338 wptr += opd_ent_size;
7339 if (add_aux_fields && opd_ent_size == 16)
7341 memset (wptr, '\0', 8);
7345 rptr += opd_ent_size;
7346 offset += opd_ent_size;
7352 && !info->relocatable
7353 && !dec_dynrel_count (rel->r_info, sec, info,
7359 /* We need to adjust any reloc offsets to point to the
7360 new opd entries. While we're at it, we may as well
7361 remove redundant relocs. */
7362 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7363 if (write_rel != rel)
7364 memcpy (write_rel, rel, sizeof (*rel));
7369 sec->size = wptr - new_contents;
7370 sec->reloc_count = write_rel - relstart;
7373 free (sec->contents);
7374 sec->contents = new_contents;
7377 /* Fudge the header size too, as this is used later in
7378 elf_bfd_final_link if we are emitting relocs. */
7379 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7380 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7383 else if (elf_section_data (sec)->relocs != relstart)
7386 if (local_syms != NULL
7387 && symtab_hdr->contents != (unsigned char *) local_syms)
7389 if (!info->keep_memory)
7392 symtab_hdr->contents = (unsigned char *) local_syms;
7397 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7399 /* If we are doing a final link and the last .opd entry is just 16 byte
7400 long, add a 8 byte padding after it. */
7401 if (need_pad != NULL && !info->relocatable)
7405 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7407 BFD_ASSERT (need_pad->size > 0);
7409 p = bfd_malloc (need_pad->size + 8);
7413 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7414 p, 0, need_pad->size))
7417 need_pad->contents = p;
7418 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7422 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7426 need_pad->contents = p;
7429 memset (need_pad->contents + need_pad->size, 0, 8);
7430 need_pad->size += 8;
7436 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7439 ppc64_elf_tls_setup (struct bfd_link_info *info,
7440 int no_tls_get_addr_opt,
7443 struct ppc_link_hash_table *htab;
7445 htab = ppc_hash_table (info);
7450 htab->do_multi_toc = 0;
7451 else if (!htab->do_multi_toc)
7454 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7455 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7456 FALSE, FALSE, TRUE));
7457 /* Move dynamic linking info to the function descriptor sym. */
7458 if (htab->tls_get_addr != NULL)
7459 func_desc_adjust (&htab->tls_get_addr->elf, info);
7460 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7461 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7462 FALSE, FALSE, TRUE));
7463 if (!no_tls_get_addr_opt)
7465 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7467 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7468 FALSE, FALSE, TRUE);
7470 func_desc_adjust (opt, info);
7471 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7472 FALSE, FALSE, TRUE);
7474 && (opt_fd->root.type == bfd_link_hash_defined
7475 || opt_fd->root.type == bfd_link_hash_defweak))
7477 /* If glibc supports an optimized __tls_get_addr call stub,
7478 signalled by the presence of __tls_get_addr_opt, and we'll
7479 be calling __tls_get_addr via a plt call stub, then
7480 make __tls_get_addr point to __tls_get_addr_opt. */
7481 tga_fd = &htab->tls_get_addr_fd->elf;
7482 if (htab->elf.dynamic_sections_created
7484 && (tga_fd->type == STT_FUNC
7485 || tga_fd->needs_plt)
7486 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7487 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7488 && tga_fd->root.type == bfd_link_hash_undefweak)))
7490 struct plt_entry *ent;
7492 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7493 if (ent->plt.refcount > 0)
7497 tga_fd->root.type = bfd_link_hash_indirect;
7498 tga_fd->root.u.i.link = &opt_fd->root;
7499 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7500 if (opt_fd->dynindx != -1)
7502 /* Use __tls_get_addr_opt in dynamic relocations. */
7503 opt_fd->dynindx = -1;
7504 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7505 opt_fd->dynstr_index);
7506 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7509 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7510 tga = &htab->tls_get_addr->elf;
7511 if (opt != NULL && tga != NULL)
7513 tga->root.type = bfd_link_hash_indirect;
7514 tga->root.u.i.link = &opt->root;
7515 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7516 _bfd_elf_link_hash_hide_symbol (info, opt,
7518 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7520 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7521 htab->tls_get_addr_fd->is_func_descriptor = 1;
7522 if (htab->tls_get_addr != NULL)
7524 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7525 htab->tls_get_addr->is_func = 1;
7531 no_tls_get_addr_opt = TRUE;
7533 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7534 return _bfd_elf_tls_setup (info->output_bfd, info);
7537 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7541 branch_reloc_hash_match (const bfd *ibfd,
7542 const Elf_Internal_Rela *rel,
7543 const struct ppc_link_hash_entry *hash1,
7544 const struct ppc_link_hash_entry *hash2)
7546 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7547 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7548 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7550 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7552 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7553 struct elf_link_hash_entry *h;
7555 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7556 h = elf_follow_link (h);
7557 if (h == &hash1->elf || h == &hash2->elf)
7563 /* Run through all the TLS relocs looking for optimization
7564 opportunities. The linker has been hacked (see ppc64elf.em) to do
7565 a preliminary section layout so that we know the TLS segment
7566 offsets. We can't optimize earlier because some optimizations need
7567 to know the tp offset, and we need to optimize before allocating
7568 dynamic relocations. */
7571 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7575 struct ppc_link_hash_table *htab;
7576 unsigned char *toc_ref;
7579 if (info->relocatable || !info->executable)
7582 htab = ppc_hash_table (info);
7586 /* Make two passes over the relocs. On the first pass, mark toc
7587 entries involved with tls relocs, and check that tls relocs
7588 involved in setting up a tls_get_addr call are indeed followed by
7589 such a call. If they are not, we can't do any tls optimization.
7590 On the second pass twiddle tls_mask flags to notify
7591 relocate_section that optimization can be done, and adjust got
7592 and plt refcounts. */
7594 for (pass = 0; pass < 2; ++pass)
7595 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7597 Elf_Internal_Sym *locsyms = NULL;
7598 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7600 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7601 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7603 Elf_Internal_Rela *relstart, *rel, *relend;
7604 bfd_boolean found_tls_get_addr_arg = 0;
7606 /* Read the relocations. */
7607 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7609 if (relstart == NULL)
7612 relend = relstart + sec->reloc_count;
7613 for (rel = relstart; rel < relend; rel++)
7615 enum elf_ppc64_reloc_type r_type;
7616 unsigned long r_symndx;
7617 struct elf_link_hash_entry *h;
7618 Elf_Internal_Sym *sym;
7620 unsigned char *tls_mask;
7621 unsigned char tls_set, tls_clear, tls_type = 0;
7623 bfd_boolean ok_tprel, is_local;
7624 long toc_ref_index = 0;
7625 int expecting_tls_get_addr = 0;
7626 bfd_boolean ret = FALSE;
7628 r_symndx = ELF64_R_SYM (rel->r_info);
7629 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7633 if (elf_section_data (sec)->relocs != relstart)
7635 if (toc_ref != NULL)
7638 && (elf_symtab_hdr (ibfd).contents
7639 != (unsigned char *) locsyms))
7646 if (h->root.type == bfd_link_hash_defined
7647 || h->root.type == bfd_link_hash_defweak)
7648 value = h->root.u.def.value;
7649 else if (h->root.type == bfd_link_hash_undefweak)
7653 found_tls_get_addr_arg = 0;
7658 /* Symbols referenced by TLS relocs must be of type
7659 STT_TLS. So no need for .opd local sym adjust. */
7660 value = sym->st_value;
7669 && h->root.type == bfd_link_hash_undefweak)
7673 value += sym_sec->output_offset;
7674 value += sym_sec->output_section->vma;
7675 value -= htab->elf.tls_sec->vma;
7676 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7677 < (bfd_vma) 1 << 32);
7681 r_type = ELF64_R_TYPE (rel->r_info);
7682 /* If this section has old-style __tls_get_addr calls
7683 without marker relocs, then check that each
7684 __tls_get_addr call reloc is preceded by a reloc
7685 that conceivably belongs to the __tls_get_addr arg
7686 setup insn. If we don't find matching arg setup
7687 relocs, don't do any tls optimization. */
7689 && sec->has_tls_get_addr_call
7691 && (h == &htab->tls_get_addr->elf
7692 || h == &htab->tls_get_addr_fd->elf)
7693 && !found_tls_get_addr_arg
7694 && is_branch_reloc (r_type))
7696 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
7697 "TLS optimization disabled\n"),
7698 ibfd, sec, rel->r_offset);
7703 found_tls_get_addr_arg = 0;
7706 case R_PPC64_GOT_TLSLD16:
7707 case R_PPC64_GOT_TLSLD16_LO:
7708 expecting_tls_get_addr = 1;
7709 found_tls_get_addr_arg = 1;
7712 case R_PPC64_GOT_TLSLD16_HI:
7713 case R_PPC64_GOT_TLSLD16_HA:
7714 /* These relocs should never be against a symbol
7715 defined in a shared lib. Leave them alone if
7716 that turns out to be the case. */
7723 tls_type = TLS_TLS | TLS_LD;
7726 case R_PPC64_GOT_TLSGD16:
7727 case R_PPC64_GOT_TLSGD16_LO:
7728 expecting_tls_get_addr = 1;
7729 found_tls_get_addr_arg = 1;
7732 case R_PPC64_GOT_TLSGD16_HI:
7733 case R_PPC64_GOT_TLSGD16_HA:
7739 tls_set = TLS_TLS | TLS_TPRELGD;
7741 tls_type = TLS_TLS | TLS_GD;
7744 case R_PPC64_GOT_TPREL16_DS:
7745 case R_PPC64_GOT_TPREL16_LO_DS:
7746 case R_PPC64_GOT_TPREL16_HI:
7747 case R_PPC64_GOT_TPREL16_HA:
7752 tls_clear = TLS_TPREL;
7753 tls_type = TLS_TLS | TLS_TPREL;
7760 found_tls_get_addr_arg = 1;
7765 case R_PPC64_TOC16_LO:
7766 if (sym_sec == NULL || sym_sec != toc)
7769 /* Mark this toc entry as referenced by a TLS
7770 code sequence. We can do that now in the
7771 case of R_PPC64_TLS, and after checking for
7772 tls_get_addr for the TOC16 relocs. */
7773 if (toc_ref == NULL)
7774 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7775 if (toc_ref == NULL)
7779 value = h->root.u.def.value;
7781 value = sym->st_value;
7782 value += rel->r_addend;
7783 BFD_ASSERT (value < toc->size && value % 8 == 0);
7784 toc_ref_index = (value + toc->output_offset) / 8;
7785 if (r_type == R_PPC64_TLS
7786 || r_type == R_PPC64_TLSGD
7787 || r_type == R_PPC64_TLSLD)
7789 toc_ref[toc_ref_index] = 1;
7793 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7798 expecting_tls_get_addr = 2;
7801 case R_PPC64_TPREL64:
7805 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7810 tls_set = TLS_EXPLICIT;
7811 tls_clear = TLS_TPREL;
7816 case R_PPC64_DTPMOD64:
7820 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7822 if (rel + 1 < relend
7824 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7825 && rel[1].r_offset == rel->r_offset + 8)
7829 tls_set = TLS_EXPLICIT | TLS_GD;
7832 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7841 tls_set = TLS_EXPLICIT;
7852 if (!expecting_tls_get_addr
7853 || !sec->has_tls_get_addr_call)
7856 if (rel + 1 < relend
7857 && branch_reloc_hash_match (ibfd, rel + 1,
7859 htab->tls_get_addr_fd))
7861 if (expecting_tls_get_addr == 2)
7863 /* Check for toc tls entries. */
7864 unsigned char *toc_tls;
7867 retval = get_tls_mask (&toc_tls, NULL, NULL,
7872 if (toc_tls != NULL)
7874 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7875 found_tls_get_addr_arg = 1;
7877 toc_ref[toc_ref_index] = 1;
7883 if (expecting_tls_get_addr != 1)
7886 /* Uh oh, we didn't find the expected call. We
7887 could just mark this symbol to exclude it
7888 from tls optimization but it's safer to skip
7889 the entire optimization. */
7890 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
7891 "TLS optimization disabled\n"),
7892 ibfd, sec, rel->r_offset);
7897 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7899 struct plt_entry *ent;
7900 for (ent = htab->tls_get_addr->elf.plt.plist;
7903 if (ent->addend == 0)
7905 if (ent->plt.refcount > 0)
7907 ent->plt.refcount -= 1;
7908 expecting_tls_get_addr = 0;
7914 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7916 struct plt_entry *ent;
7917 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7920 if (ent->addend == 0)
7922 if (ent->plt.refcount > 0)
7923 ent->plt.refcount -= 1;
7931 if ((tls_set & TLS_EXPLICIT) == 0)
7933 struct got_entry *ent;
7935 /* Adjust got entry for this reloc. */
7939 ent = elf_local_got_ents (ibfd)[r_symndx];
7941 for (; ent != NULL; ent = ent->next)
7942 if (ent->addend == rel->r_addend
7943 && ent->owner == ibfd
7944 && ent->tls_type == tls_type)
7951 /* We managed to get rid of a got entry. */
7952 if (ent->got.refcount > 0)
7953 ent->got.refcount -= 1;
7958 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7959 we'll lose one or two dyn relocs. */
7960 if (!dec_dynrel_count (rel->r_info, sec, info,
7964 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7966 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7972 *tls_mask |= tls_set;
7973 *tls_mask &= ~tls_clear;
7976 if (elf_section_data (sec)->relocs != relstart)
7981 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7983 if (!info->keep_memory)
7986 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7990 if (toc_ref != NULL)
7995 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7996 the values of any global symbols in a toc section that has been
7997 edited. Globals in toc sections should be a rarity, so this function
7998 sets a flag if any are found in toc sections other than the one just
7999 edited, so that futher hash table traversals can be avoided. */
8001 struct adjust_toc_info
8004 unsigned long *skip;
8005 bfd_boolean global_toc_syms;
8008 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8011 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8013 struct ppc_link_hash_entry *eh;
8014 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8017 if (h->root.type != bfd_link_hash_defined
8018 && h->root.type != bfd_link_hash_defweak)
8021 eh = (struct ppc_link_hash_entry *) h;
8022 if (eh->adjust_done)
8025 if (eh->elf.root.u.def.section == toc_inf->toc)
8027 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8028 i = toc_inf->toc->rawsize >> 3;
8030 i = eh->elf.root.u.def.value >> 3;
8032 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8034 (*_bfd_error_handler)
8035 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8038 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8039 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8042 eh->elf.root.u.def.value -= toc_inf->skip[i];
8043 eh->adjust_done = 1;
8045 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8046 toc_inf->global_toc_syms = TRUE;
8051 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8054 ok_lo_toc_insn (unsigned int insn)
8056 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8057 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8058 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8059 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8060 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8061 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8062 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8063 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8064 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8065 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8066 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8067 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8068 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8069 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8070 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8072 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8073 && ((insn & 3) == 0 || (insn & 3) == 3))
8074 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8077 /* Examine all relocs referencing .toc sections in order to remove
8078 unused .toc entries. */
8081 ppc64_elf_edit_toc (struct bfd_link_info *info)
8084 struct adjust_toc_info toc_inf;
8085 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8087 htab->do_toc_opt = 1;
8088 toc_inf.global_toc_syms = TRUE;
8089 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8091 asection *toc, *sec;
8092 Elf_Internal_Shdr *symtab_hdr;
8093 Elf_Internal_Sym *local_syms;
8094 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8095 unsigned long *skip, *drop;
8096 unsigned char *used;
8097 unsigned char *keep, last, some_unused;
8099 if (!is_ppc64_elf (ibfd))
8102 toc = bfd_get_section_by_name (ibfd, ".toc");
8105 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
8106 || elf_discarded_section (toc))
8111 symtab_hdr = &elf_symtab_hdr (ibfd);
8113 /* Look at sections dropped from the final link. */
8116 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8118 if (sec->reloc_count == 0
8119 || !elf_discarded_section (sec)
8120 || get_opd_info (sec)
8121 || (sec->flags & SEC_ALLOC) == 0
8122 || (sec->flags & SEC_DEBUGGING) != 0)
8125 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8126 if (relstart == NULL)
8129 /* Run through the relocs to see which toc entries might be
8131 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8133 enum elf_ppc64_reloc_type r_type;
8134 unsigned long r_symndx;
8136 struct elf_link_hash_entry *h;
8137 Elf_Internal_Sym *sym;
8140 r_type = ELF64_R_TYPE (rel->r_info);
8147 case R_PPC64_TOC16_LO:
8148 case R_PPC64_TOC16_HI:
8149 case R_PPC64_TOC16_HA:
8150 case R_PPC64_TOC16_DS:
8151 case R_PPC64_TOC16_LO_DS:
8155 r_symndx = ELF64_R_SYM (rel->r_info);
8156 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8164 val = h->root.u.def.value;
8166 val = sym->st_value;
8167 val += rel->r_addend;
8169 if (val >= toc->size)
8172 /* Anything in the toc ought to be aligned to 8 bytes.
8173 If not, don't mark as unused. */
8179 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8184 skip[val >> 3] = ref_from_discarded;
8187 if (elf_section_data (sec)->relocs != relstart)
8191 /* For largetoc loads of address constants, we can convert
8192 . addis rx,2,addr@got@ha
8193 . ld ry,addr@got@l(rx)
8195 . addis rx,2,addr@toc@ha
8196 . addi ry,rx,addr@toc@l
8197 when addr is within 2G of the toc pointer. This then means
8198 that the word storing "addr" in the toc is no longer needed. */
8200 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8201 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8202 && toc->reloc_count != 0)
8204 /* Read toc relocs. */
8205 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8207 if (toc_relocs == NULL)
8210 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8212 enum elf_ppc64_reloc_type r_type;
8213 unsigned long r_symndx;
8215 struct elf_link_hash_entry *h;
8216 Elf_Internal_Sym *sym;
8219 r_type = ELF64_R_TYPE (rel->r_info);
8220 if (r_type != R_PPC64_ADDR64)
8223 r_symndx = ELF64_R_SYM (rel->r_info);
8224 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8229 || elf_discarded_section (sym_sec))
8232 if (!SYMBOL_CALLS_LOCAL (info, h))
8237 if (h->type == STT_GNU_IFUNC)
8239 val = h->root.u.def.value;
8243 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8245 val = sym->st_value;
8247 val += rel->r_addend;
8248 val += sym_sec->output_section->vma + sym_sec->output_offset;
8250 /* We don't yet know the exact toc pointer value, but we
8251 know it will be somewhere in the toc section. Don't
8252 optimize if the difference from any possible toc
8253 pointer is outside [ff..f80008000, 7fff7fff]. */
8254 addr = toc->output_section->vma + TOC_BASE_OFF;
8255 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8258 addr = toc->output_section->vma + toc->output_section->rawsize;
8259 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8264 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8269 skip[rel->r_offset >> 3]
8270 |= can_optimize | ((rel - toc_relocs) << 2);
8277 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8281 if (local_syms != NULL
8282 && symtab_hdr->contents != (unsigned char *) local_syms)
8286 && elf_section_data (sec)->relocs != relstart)
8288 if (toc_relocs != NULL
8289 && elf_section_data (toc)->relocs != toc_relocs)
8296 /* Now check all kept sections that might reference the toc.
8297 Check the toc itself last. */
8298 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8301 sec = (sec == toc ? NULL
8302 : sec->next == NULL ? toc
8303 : sec->next == toc && toc->next ? toc->next
8308 if (sec->reloc_count == 0
8309 || elf_discarded_section (sec)
8310 || get_opd_info (sec)
8311 || (sec->flags & SEC_ALLOC) == 0
8312 || (sec->flags & SEC_DEBUGGING) != 0)
8315 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8317 if (relstart == NULL)
8320 /* Mark toc entries referenced as used. */
8323 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8325 enum elf_ppc64_reloc_type r_type;
8326 unsigned long r_symndx;
8328 struct elf_link_hash_entry *h;
8329 Elf_Internal_Sym *sym;
8331 enum {no_check, check_lo, check_ha} insn_check;
8333 r_type = ELF64_R_TYPE (rel->r_info);
8337 insn_check = no_check;
8340 case R_PPC64_GOT_TLSLD16_HA:
8341 case R_PPC64_GOT_TLSGD16_HA:
8342 case R_PPC64_GOT_TPREL16_HA:
8343 case R_PPC64_GOT_DTPREL16_HA:
8344 case R_PPC64_GOT16_HA:
8345 case R_PPC64_TOC16_HA:
8346 insn_check = check_ha;
8349 case R_PPC64_GOT_TLSLD16_LO:
8350 case R_PPC64_GOT_TLSGD16_LO:
8351 case R_PPC64_GOT_TPREL16_LO_DS:
8352 case R_PPC64_GOT_DTPREL16_LO_DS:
8353 case R_PPC64_GOT16_LO:
8354 case R_PPC64_GOT16_LO_DS:
8355 case R_PPC64_TOC16_LO:
8356 case R_PPC64_TOC16_LO_DS:
8357 insn_check = check_lo;
8361 if (insn_check != no_check)
8363 bfd_vma off = rel->r_offset & ~3;
8364 unsigned char buf[4];
8367 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8372 insn = bfd_get_32 (ibfd, buf);
8373 if (insn_check == check_lo
8374 ? !ok_lo_toc_insn (insn)
8375 : ((insn & ((0x3f << 26) | 0x1f << 16))
8376 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8380 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8381 sprintf (str, "%#08x", insn);
8382 info->callbacks->einfo
8383 (_("%P: %H: toc optimization is not supported for"
8384 " %s instruction.\n"),
8385 ibfd, sec, rel->r_offset & ~3, str);
8392 case R_PPC64_TOC16_LO:
8393 case R_PPC64_TOC16_HI:
8394 case R_PPC64_TOC16_HA:
8395 case R_PPC64_TOC16_DS:
8396 case R_PPC64_TOC16_LO_DS:
8397 /* In case we're taking addresses of toc entries. */
8398 case R_PPC64_ADDR64:
8405 r_symndx = ELF64_R_SYM (rel->r_info);
8406 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8417 val = h->root.u.def.value;
8419 val = sym->st_value;
8420 val += rel->r_addend;
8422 if (val >= toc->size)
8425 if ((skip[val >> 3] & can_optimize) != 0)
8432 case R_PPC64_TOC16_HA:
8435 case R_PPC64_TOC16_LO_DS:
8436 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8437 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
8442 if ((opc & (0x3f << 2)) == (58u << 2))
8447 /* Wrong sort of reloc, or not a ld. We may
8448 as well clear ref_from_discarded too. */
8453 /* For the toc section, we only mark as used if
8454 this entry itself isn't unused. */
8457 && (used[rel->r_offset >> 3]
8458 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
8459 /* Do all the relocs again, to catch reference
8467 if (elf_section_data (sec)->relocs != relstart)
8471 /* Merge the used and skip arrays. Assume that TOC
8472 doublewords not appearing as either used or unused belong
8473 to to an entry more than one doubleword in size. */
8474 for (drop = skip, keep = used, last = 0, some_unused = 0;
8475 drop < skip + (toc->size + 7) / 8;
8480 *drop &= ~ref_from_discarded;
8481 if ((*drop & can_optimize) != 0)
8485 else if ((*drop & ref_from_discarded) != 0)
8488 last = ref_from_discarded;
8498 bfd_byte *contents, *src;
8500 Elf_Internal_Sym *sym;
8501 bfd_boolean local_toc_syms = FALSE;
8503 /* Shuffle the toc contents, and at the same time convert the
8504 skip array from booleans into offsets. */
8505 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8508 elf_section_data (toc)->this_hdr.contents = contents;
8510 for (src = contents, off = 0, drop = skip;
8511 src < contents + toc->size;
8514 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8519 memcpy (src - off, src, 8);
8523 toc->rawsize = toc->size;
8524 toc->size = src - contents - off;
8526 /* Adjust addends for relocs against the toc section sym,
8527 and optimize any accesses we can. */
8528 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8530 if (sec->reloc_count == 0
8531 || elf_discarded_section (sec))
8534 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8536 if (relstart == NULL)
8539 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8541 enum elf_ppc64_reloc_type r_type;
8542 unsigned long r_symndx;
8544 struct elf_link_hash_entry *h;
8547 r_type = ELF64_R_TYPE (rel->r_info);
8554 case R_PPC64_TOC16_LO:
8555 case R_PPC64_TOC16_HI:
8556 case R_PPC64_TOC16_HA:
8557 case R_PPC64_TOC16_DS:
8558 case R_PPC64_TOC16_LO_DS:
8559 case R_PPC64_ADDR64:
8563 r_symndx = ELF64_R_SYM (rel->r_info);
8564 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8572 val = h->root.u.def.value;
8575 val = sym->st_value;
8577 local_toc_syms = TRUE;
8580 val += rel->r_addend;
8582 if (val > toc->rawsize)
8584 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8586 else if ((skip[val >> 3] & can_optimize) != 0)
8588 Elf_Internal_Rela *tocrel
8589 = toc_relocs + (skip[val >> 3] >> 2);
8590 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8594 case R_PPC64_TOC16_HA:
8595 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8598 case R_PPC64_TOC16_LO_DS:
8599 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8603 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8605 info->callbacks->einfo
8606 (_("%P: %H: %s relocation references "
8607 "optimized away TOC entry\n"),
8608 ibfd, sec, rel->r_offset,
8609 ppc64_elf_howto_table[r_type]->name);
8610 bfd_set_error (bfd_error_bad_value);
8613 rel->r_addend = tocrel->r_addend;
8614 elf_section_data (sec)->relocs = relstart;
8618 if (h != NULL || sym->st_value != 0)
8621 rel->r_addend -= skip[val >> 3];
8622 elf_section_data (sec)->relocs = relstart;
8625 if (elf_section_data (sec)->relocs != relstart)
8629 /* We shouldn't have local or global symbols defined in the TOC,
8630 but handle them anyway. */
8631 if (local_syms != NULL)
8632 for (sym = local_syms;
8633 sym < local_syms + symtab_hdr->sh_info;
8635 if (sym->st_value != 0
8636 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8640 if (sym->st_value > toc->rawsize)
8641 i = toc->rawsize >> 3;
8643 i = sym->st_value >> 3;
8645 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8648 (*_bfd_error_handler)
8649 (_("%s defined on removed toc entry"),
8650 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8653 while ((skip[i] & (ref_from_discarded | can_optimize)));
8654 sym->st_value = (bfd_vma) i << 3;
8657 sym->st_value -= skip[i];
8658 symtab_hdr->contents = (unsigned char *) local_syms;
8661 /* Adjust any global syms defined in this toc input section. */
8662 if (toc_inf.global_toc_syms)
8665 toc_inf.skip = skip;
8666 toc_inf.global_toc_syms = FALSE;
8667 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8671 if (toc->reloc_count != 0)
8673 Elf_Internal_Shdr *rel_hdr;
8674 Elf_Internal_Rela *wrel;
8677 /* Remove unused toc relocs, and adjust those we keep. */
8678 if (toc_relocs == NULL)
8679 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8681 if (toc_relocs == NULL)
8685 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8686 if ((skip[rel->r_offset >> 3]
8687 & (ref_from_discarded | can_optimize)) == 0)
8689 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8690 wrel->r_info = rel->r_info;
8691 wrel->r_addend = rel->r_addend;
8694 else if (!dec_dynrel_count (rel->r_info, toc, info,
8695 &local_syms, NULL, NULL))
8698 elf_section_data (toc)->relocs = toc_relocs;
8699 toc->reloc_count = wrel - toc_relocs;
8700 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8701 sz = rel_hdr->sh_entsize;
8702 rel_hdr->sh_size = toc->reloc_count * sz;
8705 else if (toc_relocs != NULL
8706 && elf_section_data (toc)->relocs != toc_relocs)
8709 if (local_syms != NULL
8710 && symtab_hdr->contents != (unsigned char *) local_syms)
8712 if (!info->keep_memory)
8715 symtab_hdr->contents = (unsigned char *) local_syms;
8723 /* Return true iff input section I references the TOC using
8724 instructions limited to +/-32k offsets. */
8727 ppc64_elf_has_small_toc_reloc (asection *i)
8729 return (is_ppc64_elf (i->owner)
8730 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8733 /* Allocate space for one GOT entry. */
8736 allocate_got (struct elf_link_hash_entry *h,
8737 struct bfd_link_info *info,
8738 struct got_entry *gent)
8740 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8742 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8743 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8745 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8746 ? 2 : 1) * sizeof (Elf64_External_Rela);
8747 asection *got = ppc64_elf_tdata (gent->owner)->got;
8749 gent->got.offset = got->size;
8750 got->size += entsize;
8752 dyn = htab->elf.dynamic_sections_created;
8754 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8755 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8756 || h->root.type != bfd_link_hash_undefweak))
8758 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8759 relgot->size += rentsize;
8761 else if (h->type == STT_GNU_IFUNC)
8763 asection *relgot = htab->reliplt;
8764 relgot->size += rentsize;
8765 htab->got_reli_size += rentsize;
8769 /* This function merges got entries in the same toc group. */
8772 merge_got_entries (struct got_entry **pent)
8774 struct got_entry *ent, *ent2;
8776 for (ent = *pent; ent != NULL; ent = ent->next)
8777 if (!ent->is_indirect)
8778 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8779 if (!ent2->is_indirect
8780 && ent2->addend == ent->addend
8781 && ent2->tls_type == ent->tls_type
8782 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8784 ent2->is_indirect = TRUE;
8785 ent2->got.ent = ent;
8789 /* Allocate space in .plt, .got and associated reloc sections for
8793 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8795 struct bfd_link_info *info;
8796 struct ppc_link_hash_table *htab;
8798 struct ppc_link_hash_entry *eh;
8799 struct elf_dyn_relocs *p;
8800 struct got_entry **pgent, *gent;
8802 if (h->root.type == bfd_link_hash_indirect)
8805 info = (struct bfd_link_info *) inf;
8806 htab = ppc_hash_table (info);
8810 if ((htab->elf.dynamic_sections_created
8812 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8813 || h->type == STT_GNU_IFUNC)
8815 struct plt_entry *pent;
8816 bfd_boolean doneone = FALSE;
8817 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8818 if (pent->plt.refcount > 0)
8820 if (!htab->elf.dynamic_sections_created
8821 || h->dynindx == -1)
8824 pent->plt.offset = s->size;
8825 s->size += PLT_ENTRY_SIZE;
8830 /* If this is the first .plt entry, make room for the special
8834 s->size += PLT_INITIAL_ENTRY_SIZE;
8836 pent->plt.offset = s->size;
8838 /* Make room for this entry. */
8839 s->size += PLT_ENTRY_SIZE;
8841 /* Make room for the .glink code. */
8844 s->size += GLINK_CALL_STUB_SIZE;
8845 /* We need bigger stubs past index 32767. */
8846 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8850 /* We also need to make an entry in the .rela.plt section. */
8853 s->size += sizeof (Elf64_External_Rela);
8857 pent->plt.offset = (bfd_vma) -1;
8860 h->plt.plist = NULL;
8866 h->plt.plist = NULL;
8870 eh = (struct ppc_link_hash_entry *) h;
8871 /* Run through the TLS GD got entries first if we're changing them
8873 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8874 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8875 if (gent->got.refcount > 0
8876 && (gent->tls_type & TLS_GD) != 0)
8878 /* This was a GD entry that has been converted to TPREL. If
8879 there happens to be a TPREL entry we can use that one. */
8880 struct got_entry *ent;
8881 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8882 if (ent->got.refcount > 0
8883 && (ent->tls_type & TLS_TPREL) != 0
8884 && ent->addend == gent->addend
8885 && ent->owner == gent->owner)
8887 gent->got.refcount = 0;
8891 /* If not, then we'll be using our own TPREL entry. */
8892 if (gent->got.refcount != 0)
8893 gent->tls_type = TLS_TLS | TLS_TPREL;
8896 /* Remove any list entry that won't generate a word in the GOT before
8897 we call merge_got_entries. Otherwise we risk merging to empty
8899 pgent = &h->got.glist;
8900 while ((gent = *pgent) != NULL)
8901 if (gent->got.refcount > 0)
8903 if ((gent->tls_type & TLS_LD) != 0
8906 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8907 *pgent = gent->next;
8910 pgent = &gent->next;
8913 *pgent = gent->next;
8915 if (!htab->do_multi_toc)
8916 merge_got_entries (&h->got.glist);
8918 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8919 if (!gent->is_indirect)
8921 /* Make sure this symbol is output as a dynamic symbol.
8922 Undefined weak syms won't yet be marked as dynamic,
8923 nor will all TLS symbols. */
8924 if (h->dynindx == -1
8926 && h->type != STT_GNU_IFUNC
8927 && htab->elf.dynamic_sections_created)
8929 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8933 if (!is_ppc64_elf (gent->owner))
8936 allocate_got (h, info, gent);
8939 if (eh->dyn_relocs == NULL
8940 || (!htab->elf.dynamic_sections_created
8941 && h->type != STT_GNU_IFUNC))
8944 /* In the shared -Bsymbolic case, discard space allocated for
8945 dynamic pc-relative relocs against symbols which turn out to be
8946 defined in regular objects. For the normal shared case, discard
8947 space for relocs that have become local due to symbol visibility
8952 /* Relocs that use pc_count are those that appear on a call insn,
8953 or certain REL relocs (see must_be_dyn_reloc) that can be
8954 generated via assembly. We want calls to protected symbols to
8955 resolve directly to the function rather than going via the plt.
8956 If people want function pointer comparisons to work as expected
8957 then they should avoid writing weird assembly. */
8958 if (SYMBOL_CALLS_LOCAL (info, h))
8960 struct elf_dyn_relocs **pp;
8962 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8964 p->count -= p->pc_count;
8973 /* Also discard relocs on undefined weak syms with non-default
8975 if (eh->dyn_relocs != NULL
8976 && h->root.type == bfd_link_hash_undefweak)
8978 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8979 eh->dyn_relocs = NULL;
8981 /* Make sure this symbol is output as a dynamic symbol.
8982 Undefined weak syms won't yet be marked as dynamic. */
8983 else if (h->dynindx == -1
8984 && !h->forced_local)
8986 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8991 else if (h->type == STT_GNU_IFUNC)
8993 if (!h->non_got_ref)
8994 eh->dyn_relocs = NULL;
8996 else if (ELIMINATE_COPY_RELOCS)
8998 /* For the non-shared case, discard space for relocs against
8999 symbols which turn out to need copy relocs or are not
9005 /* Make sure this symbol is output as a dynamic symbol.
9006 Undefined weak syms won't yet be marked as dynamic. */
9007 if (h->dynindx == -1
9008 && !h->forced_local)
9010 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9014 /* If that succeeded, we know we'll be keeping all the
9016 if (h->dynindx != -1)
9020 eh->dyn_relocs = NULL;
9025 /* Finally, allocate space. */
9026 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9028 asection *sreloc = elf_section_data (p->sec)->sreloc;
9029 if (!htab->elf.dynamic_sections_created)
9030 sreloc = htab->reliplt;
9031 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9037 /* Find any dynamic relocs that apply to read-only sections. */
9040 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9042 struct ppc_link_hash_entry *eh;
9043 struct elf_dyn_relocs *p;
9045 eh = (struct ppc_link_hash_entry *) h;
9046 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9048 asection *s = p->sec->output_section;
9050 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9052 struct bfd_link_info *info = inf;
9054 info->flags |= DF_TEXTREL;
9056 /* Not an error, just cut short the traversal. */
9063 /* Set the sizes of the dynamic sections. */
9066 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
9067 struct bfd_link_info *info)
9069 struct ppc_link_hash_table *htab;
9074 struct got_entry *first_tlsld;
9076 htab = ppc_hash_table (info);
9080 dynobj = htab->elf.dynobj;
9084 if (htab->elf.dynamic_sections_created)
9086 /* Set the contents of the .interp section to the interpreter. */
9087 if (info->executable)
9089 s = bfd_get_section_by_name (dynobj, ".interp");
9092 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9093 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9097 /* Set up .got offsets for local syms, and space for local dynamic
9099 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9101 struct got_entry **lgot_ents;
9102 struct got_entry **end_lgot_ents;
9103 struct plt_entry **local_plt;
9104 struct plt_entry **end_local_plt;
9105 unsigned char *lgot_masks;
9106 bfd_size_type locsymcount;
9107 Elf_Internal_Shdr *symtab_hdr;
9110 if (!is_ppc64_elf (ibfd))
9113 for (s = ibfd->sections; s != NULL; s = s->next)
9115 struct elf_dyn_relocs *p;
9117 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9119 if (!bfd_is_abs_section (p->sec)
9120 && bfd_is_abs_section (p->sec->output_section))
9122 /* Input section has been discarded, either because
9123 it is a copy of a linkonce section or due to
9124 linker script /DISCARD/, so we'll be discarding
9127 else if (p->count != 0)
9129 srel = elf_section_data (p->sec)->sreloc;
9130 if (!htab->elf.dynamic_sections_created)
9131 srel = htab->reliplt;
9132 srel->size += p->count * sizeof (Elf64_External_Rela);
9133 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9134 info->flags |= DF_TEXTREL;
9139 lgot_ents = elf_local_got_ents (ibfd);
9143 symtab_hdr = &elf_symtab_hdr (ibfd);
9144 locsymcount = symtab_hdr->sh_info;
9145 end_lgot_ents = lgot_ents + locsymcount;
9146 local_plt = (struct plt_entry **) end_lgot_ents;
9147 end_local_plt = local_plt + locsymcount;
9148 lgot_masks = (unsigned char *) end_local_plt;
9149 s = ppc64_elf_tdata (ibfd)->got;
9150 srel = ppc64_elf_tdata (ibfd)->relgot;
9151 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9153 struct got_entry **pent, *ent;
9156 while ((ent = *pent) != NULL)
9157 if (ent->got.refcount > 0)
9159 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9161 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9166 unsigned int num = 1;
9167 ent->got.offset = s->size;
9168 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9172 srel->size += num * sizeof (Elf64_External_Rela);
9173 else if ((*lgot_masks & PLT_IFUNC) != 0)
9176 += num * sizeof (Elf64_External_Rela);
9178 += num * sizeof (Elf64_External_Rela);
9187 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9188 for (; local_plt < end_local_plt; ++local_plt)
9190 struct plt_entry *ent;
9192 for (ent = *local_plt; ent != NULL; ent = ent->next)
9193 if (ent->plt.refcount > 0)
9196 ent->plt.offset = s->size;
9197 s->size += PLT_ENTRY_SIZE;
9199 htab->reliplt->size += sizeof (Elf64_External_Rela);
9202 ent->plt.offset = (bfd_vma) -1;
9206 /* Allocate global sym .plt and .got entries, and space for global
9207 sym dynamic relocs. */
9208 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9211 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9213 struct got_entry *ent;
9215 if (!is_ppc64_elf (ibfd))
9218 ent = ppc64_tlsld_got (ibfd);
9219 if (ent->got.refcount > 0)
9221 if (!htab->do_multi_toc && first_tlsld != NULL)
9223 ent->is_indirect = TRUE;
9224 ent->got.ent = first_tlsld;
9228 if (first_tlsld == NULL)
9230 s = ppc64_elf_tdata (ibfd)->got;
9231 ent->got.offset = s->size;
9236 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9237 srel->size += sizeof (Elf64_External_Rela);
9242 ent->got.offset = (bfd_vma) -1;
9245 /* We now have determined the sizes of the various dynamic sections.
9246 Allocate memory for them. */
9248 for (s = dynobj->sections; s != NULL; s = s->next)
9250 if ((s->flags & SEC_LINKER_CREATED) == 0)
9253 if (s == htab->brlt || s == htab->relbrlt)
9254 /* These haven't been allocated yet; don't strip. */
9256 else if (s == htab->got
9260 || s == htab->dynbss)
9262 /* Strip this section if we don't need it; see the
9265 else if (s == htab->glink_eh_frame)
9267 if (!bfd_is_abs_section (s->output_section))
9268 /* Not sized yet. */
9271 else if (CONST_STRNEQ (s->name, ".rela"))
9275 if (s != htab->relplt)
9278 /* We use the reloc_count field as a counter if we need
9279 to copy relocs into the output file. */
9285 /* It's not one of our sections, so don't allocate space. */
9291 /* If we don't need this section, strip it from the
9292 output file. This is mostly to handle .rela.bss and
9293 .rela.plt. We must create both sections in
9294 create_dynamic_sections, because they must be created
9295 before the linker maps input sections to output
9296 sections. The linker does that before
9297 adjust_dynamic_symbol is called, and it is that
9298 function which decides whether anything needs to go
9299 into these sections. */
9300 s->flags |= SEC_EXCLUDE;
9304 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9307 /* Allocate memory for the section contents. We use bfd_zalloc
9308 here in case unused entries are not reclaimed before the
9309 section's contents are written out. This should not happen,
9310 but this way if it does we get a R_PPC64_NONE reloc in .rela
9311 sections instead of garbage.
9312 We also rely on the section contents being zero when writing
9314 s->contents = bfd_zalloc (dynobj, s->size);
9315 if (s->contents == NULL)
9319 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9321 if (!is_ppc64_elf (ibfd))
9324 s = ppc64_elf_tdata (ibfd)->got;
9325 if (s != NULL && s != htab->got)
9328 s->flags |= SEC_EXCLUDE;
9331 s->contents = bfd_zalloc (ibfd, s->size);
9332 if (s->contents == NULL)
9336 s = ppc64_elf_tdata (ibfd)->relgot;
9340 s->flags |= SEC_EXCLUDE;
9343 s->contents = bfd_zalloc (ibfd, s->size);
9344 if (s->contents == NULL)
9352 if (htab->elf.dynamic_sections_created)
9354 /* Add some entries to the .dynamic section. We fill in the
9355 values later, in ppc64_elf_finish_dynamic_sections, but we
9356 must add the entries now so that we get the correct size for
9357 the .dynamic section. The DT_DEBUG entry is filled in by the
9358 dynamic linker and used by the debugger. */
9359 #define add_dynamic_entry(TAG, VAL) \
9360 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9362 if (info->executable)
9364 if (!add_dynamic_entry (DT_DEBUG, 0))
9368 if (htab->plt != NULL && htab->plt->size != 0)
9370 if (!add_dynamic_entry (DT_PLTGOT, 0)
9371 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9372 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9373 || !add_dynamic_entry (DT_JMPREL, 0)
9374 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9380 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9381 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9385 if (!htab->no_tls_get_addr_opt
9386 && htab->tls_get_addr_fd != NULL
9387 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9388 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9393 if (!add_dynamic_entry (DT_RELA, 0)
9394 || !add_dynamic_entry (DT_RELASZ, 0)
9395 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9398 /* If any dynamic relocs apply to a read-only section,
9399 then we need a DT_TEXTREL entry. */
9400 if ((info->flags & DF_TEXTREL) == 0)
9401 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9403 if ((info->flags & DF_TEXTREL) != 0)
9405 if (!add_dynamic_entry (DT_TEXTREL, 0))
9410 #undef add_dynamic_entry
9415 /* Determine the type of stub needed, if any, for a call. */
9417 static inline enum ppc_stub_type
9418 ppc_type_of_stub (asection *input_sec,
9419 const Elf_Internal_Rela *rel,
9420 struct ppc_link_hash_entry **hash,
9421 struct plt_entry **plt_ent,
9422 bfd_vma destination)
9424 struct ppc_link_hash_entry *h = *hash;
9426 bfd_vma branch_offset;
9427 bfd_vma max_branch_offset;
9428 enum elf_ppc64_reloc_type r_type;
9432 struct plt_entry *ent;
9433 struct ppc_link_hash_entry *fdh = h;
9435 && h->oh->is_func_descriptor)
9437 fdh = ppc_follow_link (h->oh);
9441 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9442 if (ent->addend == rel->r_addend
9443 && ent->plt.offset != (bfd_vma) -1)
9446 return ppc_stub_plt_call;
9449 /* Here, we know we don't have a plt entry. If we don't have a
9450 either a defined function descriptor or a defined entry symbol
9451 in a regular object file, then it is pointless trying to make
9452 any other type of stub. */
9453 if (!is_static_defined (&fdh->elf)
9454 && !is_static_defined (&h->elf))
9455 return ppc_stub_none;
9457 else if (elf_local_got_ents (input_sec->owner) != NULL)
9459 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9460 struct plt_entry **local_plt = (struct plt_entry **)
9461 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9462 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9464 if (local_plt[r_symndx] != NULL)
9466 struct plt_entry *ent;
9468 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9469 if (ent->addend == rel->r_addend
9470 && ent->plt.offset != (bfd_vma) -1)
9473 return ppc_stub_plt_call;
9478 /* Determine where the call point is. */
9479 location = (input_sec->output_offset
9480 + input_sec->output_section->vma
9483 branch_offset = destination - location;
9484 r_type = ELF64_R_TYPE (rel->r_info);
9486 /* Determine if a long branch stub is needed. */
9487 max_branch_offset = 1 << 25;
9488 if (r_type != R_PPC64_REL24)
9489 max_branch_offset = 1 << 15;
9491 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9492 /* We need a stub. Figure out whether a long_branch or plt_branch
9494 return ppc_stub_long_branch;
9496 return ppc_stub_none;
9499 /* With power7 weakly ordered memory model, it is possible for ld.so
9500 to update a plt entry in one thread and have another thread see a
9501 stale zero toc entry. To avoid this we need some sort of acquire
9502 barrier in the call stub. One solution is to make the load of the
9503 toc word seem to appear to depend on the load of the function entry
9504 word. Another solution is to test for r2 being zero, and branch to
9505 the appropriate glink entry if so.
9507 . fake dep barrier compare
9508 . ld 11,xxx(2) ld 11,xxx(2)
9510 . xor 11,11,11 ld 2,xxx+8(2)
9511 . add 2,2,11 cmpldi 2,0
9512 . ld 2,xxx+8(2) bnectr+
9513 . bctr b <glink_entry>
9515 The solution involving the compare turns out to be faster, so
9516 that's what we use unless the branch won't reach. */
9518 #define ALWAYS_USE_FAKE_DEP 0
9519 #define ALWAYS_EMIT_R2SAVE 0
9521 #define PPC_LO(v) ((v) & 0xffff)
9522 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9523 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9525 static inline unsigned int
9526 plt_stub_size (struct ppc_link_hash_table *htab,
9527 struct ppc_stub_hash_entry *stub_entry,
9530 unsigned size = PLT_CALL_STUB_SIZE;
9532 if (!(ALWAYS_EMIT_R2SAVE
9533 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
9535 if (!htab->plt_static_chain)
9537 if (htab->plt_thread_safe)
9539 if (PPC_HA (off) == 0)
9541 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
9543 if (stub_entry->h != NULL
9544 && (stub_entry->h == htab->tls_get_addr_fd
9545 || stub_entry->h == htab->tls_get_addr)
9546 && !htab->no_tls_get_addr_opt)
9551 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9552 then return the padding needed to do so. */
9553 static inline unsigned int
9554 plt_stub_pad (struct ppc_link_hash_table *htab,
9555 struct ppc_stub_hash_entry *stub_entry,
9558 int stub_align = 1 << htab->plt_stub_align;
9559 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
9560 bfd_vma stub_off = stub_entry->stub_sec->size;
9562 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
9563 > (stub_size & -stub_align))
9564 return stub_align - (stub_off & (stub_align - 1));
9568 /* Build a .plt call stub. */
9570 static inline bfd_byte *
9571 build_plt_stub (struct ppc_link_hash_table *htab,
9572 struct ppc_stub_hash_entry *stub_entry,
9573 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9575 bfd *obfd = htab->stub_bfd;
9576 bfd_boolean plt_static_chain = htab->plt_static_chain;
9577 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
9578 bfd_boolean use_fake_dep = plt_thread_safe;
9579 bfd_vma cmp_branch_off = 0;
9581 if (!ALWAYS_USE_FAKE_DEP
9583 && !(stub_entry->h != NULL
9584 && (stub_entry->h == htab->tls_get_addr_fd
9585 || stub_entry->h == htab->tls_get_addr)
9586 && !htab->no_tls_get_addr_opt))
9588 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
9589 bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9590 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
9593 if (pltindex > 32767)
9594 glinkoff += (pltindex - 32767) * 4;
9596 + htab->glink->output_offset
9597 + htab->glink->output_section->vma);
9598 from = (p - stub_entry->stub_sec->contents
9599 + 4 * (ALWAYS_EMIT_R2SAVE
9600 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9601 + 4 * (PPC_HA (offset) != 0)
9602 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
9604 + 4 * (plt_static_chain != 0)
9606 + stub_entry->stub_sec->output_offset
9607 + stub_entry->stub_sec->output_section->vma);
9608 cmp_branch_off = to - from;
9609 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
9612 if (PPC_HA (offset) != 0)
9616 if (ALWAYS_EMIT_R2SAVE
9617 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9619 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9620 r[1].r_offset = r[0].r_offset + 4;
9621 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9622 r[1].r_addend = r[0].r_addend;
9623 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9625 r[2].r_offset = r[1].r_offset + 4;
9626 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9627 r[2].r_addend = r[0].r_addend;
9631 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
9632 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9633 r[2].r_addend = r[0].r_addend + 8;
9634 if (plt_static_chain)
9636 r[3].r_offset = r[2].r_offset + 4;
9637 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9638 r[3].r_addend = r[0].r_addend + 16;
9642 if (ALWAYS_EMIT_R2SAVE
9643 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9644 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9645 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9646 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9647 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9649 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9652 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9655 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9656 bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4;
9658 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9659 if (plt_static_chain)
9660 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9666 if (ALWAYS_EMIT_R2SAVE
9667 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9669 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9670 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9672 r[1].r_offset = r[0].r_offset + 4;
9673 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9674 r[1].r_addend = r[0].r_addend;
9678 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
9679 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9680 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
9681 if (plt_static_chain)
9683 r[2].r_offset = r[1].r_offset + 4;
9684 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9685 r[2].r_addend = r[0].r_addend + 8;
9689 if (ALWAYS_EMIT_R2SAVE
9690 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9691 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9692 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9693 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9695 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9698 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9701 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9702 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
9704 if (plt_static_chain)
9705 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9706 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9708 if (plt_thread_safe && !use_fake_dep)
9710 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
9711 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
9712 bfd_put_32 (obfd, B_DOT + cmp_branch_off, p), p += 4;
9715 bfd_put_32 (obfd, BCTR, p), p += 4;
9719 /* Build a special .plt call stub for __tls_get_addr. */
9721 #define LD_R11_0R3 0xe9630000
9722 #define LD_R12_0R3 0xe9830000
9723 #define MR_R0_R3 0x7c601b78
9724 #define CMPDI_R11_0 0x2c2b0000
9725 #define ADD_R3_R12_R13 0x7c6c6a14
9726 #define BEQLR 0x4d820020
9727 #define MR_R3_R0 0x7c030378
9728 #define MFLR_R11 0x7d6802a6
9729 #define STD_R11_0R1 0xf9610000
9730 #define BCTRL 0x4e800421
9731 #define LD_R11_0R1 0xe9610000
9732 #define LD_R2_0R1 0xe8410000
9733 #define MTLR_R11 0x7d6803a6
9735 static inline bfd_byte *
9736 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
9737 struct ppc_stub_hash_entry *stub_entry,
9738 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9740 bfd *obfd = htab->stub_bfd;
9742 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9743 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9744 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9745 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9746 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9747 bfd_put_32 (obfd, BEQLR, p), p += 4;
9748 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9749 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9750 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9753 r[0].r_offset += 9 * 4;
9754 p = build_plt_stub (htab, stub_entry, p, offset, r);
9755 bfd_put_32 (obfd, BCTRL, p - 4);
9757 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9758 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9759 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9760 bfd_put_32 (obfd, BLR, p), p += 4;
9765 static Elf_Internal_Rela *
9766 get_relocs (asection *sec, int count)
9768 Elf_Internal_Rela *relocs;
9769 struct bfd_elf_section_data *elfsec_data;
9771 elfsec_data = elf_section_data (sec);
9772 relocs = elfsec_data->relocs;
9775 bfd_size_type relsize;
9776 relsize = sec->reloc_count * sizeof (*relocs);
9777 relocs = bfd_alloc (sec->owner, relsize);
9780 elfsec_data->relocs = relocs;
9781 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9782 sizeof (Elf_Internal_Shdr));
9783 if (elfsec_data->rela.hdr == NULL)
9785 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9786 * sizeof (Elf64_External_Rela));
9787 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
9788 sec->reloc_count = 0;
9790 relocs += sec->reloc_count;
9791 sec->reloc_count += count;
9796 get_r2off (struct bfd_link_info *info,
9797 struct ppc_stub_hash_entry *stub_entry)
9799 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9800 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9804 /* Support linking -R objects. Get the toc pointer from the
9807 asection *opd = stub_entry->h->elf.root.u.def.section;
9808 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9810 if (strcmp (opd->name, ".opd") != 0
9811 || opd->reloc_count != 0)
9813 info->callbacks->einfo (_("%P: cannot find opd entry toc for %s\n"),
9814 stub_entry->h->elf.root.root.string);
9815 bfd_set_error (bfd_error_bad_value);
9818 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9820 r2off = bfd_get_64 (opd->owner, buf);
9821 r2off -= elf_gp (info->output_bfd);
9823 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9828 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9830 struct ppc_stub_hash_entry *stub_entry;
9831 struct ppc_branch_hash_entry *br_entry;
9832 struct bfd_link_info *info;
9833 struct ppc_link_hash_table *htab;
9838 Elf_Internal_Rela *r;
9841 /* Massage our args to the form they really have. */
9842 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9845 htab = ppc_hash_table (info);
9849 /* Make a note of the offset within the stubs for this entry. */
9850 stub_entry->stub_offset = stub_entry->stub_sec->size;
9851 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9853 htab->stub_count[stub_entry->stub_type - 1] += 1;
9854 switch (stub_entry->stub_type)
9856 case ppc_stub_long_branch:
9857 case ppc_stub_long_branch_r2off:
9858 /* Branches are relative. This is where we are going to. */
9859 off = dest = (stub_entry->target_value
9860 + stub_entry->target_section->output_offset
9861 + stub_entry->target_section->output_section->vma);
9863 /* And this is where we are coming from. */
9864 off -= (stub_entry->stub_offset
9865 + stub_entry->stub_sec->output_offset
9866 + stub_entry->stub_sec->output_section->vma);
9869 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9871 bfd_vma r2off = get_r2off (info, stub_entry);
9875 htab->stub_error = TRUE;
9878 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9881 if (PPC_HA (r2off) != 0)
9884 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9887 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9891 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9893 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9895 info->callbacks->einfo (_("%P: long branch stub `%s' offset overflow\n"),
9896 stub_entry->root.string);
9897 htab->stub_error = TRUE;
9901 if (info->emitrelocations)
9903 r = get_relocs (stub_entry->stub_sec, 1);
9906 r->r_offset = loc - stub_entry->stub_sec->contents;
9907 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9909 if (stub_entry->h != NULL)
9911 struct elf_link_hash_entry **hashes;
9912 unsigned long symndx;
9913 struct ppc_link_hash_entry *h;
9915 hashes = elf_sym_hashes (htab->stub_bfd);
9918 bfd_size_type hsize;
9920 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9921 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9924 elf_sym_hashes (htab->stub_bfd) = hashes;
9925 htab->stub_globals = 1;
9927 symndx = htab->stub_globals++;
9929 hashes[symndx] = &h->elf;
9930 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9931 if (h->oh != NULL && h->oh->is_func)
9932 h = ppc_follow_link (h->oh);
9933 if (h->elf.root.u.def.section != stub_entry->target_section)
9934 /* H is an opd symbol. The addend must be zero. */
9938 off = (h->elf.root.u.def.value
9939 + h->elf.root.u.def.section->output_offset
9940 + h->elf.root.u.def.section->output_section->vma);
9947 case ppc_stub_plt_branch:
9948 case ppc_stub_plt_branch_r2off:
9949 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9950 stub_entry->root.string + 9,
9952 if (br_entry == NULL)
9954 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
9955 stub_entry->root.string);
9956 htab->stub_error = TRUE;
9960 dest = (stub_entry->target_value
9961 + stub_entry->target_section->output_offset
9962 + stub_entry->target_section->output_section->vma);
9964 bfd_put_64 (htab->brlt->owner, dest,
9965 htab->brlt->contents + br_entry->offset);
9967 if (br_entry->iter == htab->stub_iteration)
9971 if (htab->relbrlt != NULL)
9973 /* Create a reloc for the branch lookup table entry. */
9974 Elf_Internal_Rela rela;
9977 rela.r_offset = (br_entry->offset
9978 + htab->brlt->output_offset
9979 + htab->brlt->output_section->vma);
9980 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9981 rela.r_addend = dest;
9983 rl = htab->relbrlt->contents;
9984 rl += (htab->relbrlt->reloc_count++
9985 * sizeof (Elf64_External_Rela));
9986 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9988 else if (info->emitrelocations)
9990 r = get_relocs (htab->brlt, 1);
9993 /* brlt, being SEC_LINKER_CREATED does not go through the
9994 normal reloc processing. Symbols and offsets are not
9995 translated from input file to output file form, so
9996 set up the offset per the output file. */
9997 r->r_offset = (br_entry->offset
9998 + htab->brlt->output_offset
9999 + htab->brlt->output_section->vma);
10000 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10001 r->r_addend = dest;
10005 dest = (br_entry->offset
10006 + htab->brlt->output_offset
10007 + htab->brlt->output_section->vma);
10010 - elf_gp (htab->brlt->output_section->owner)
10011 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10013 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10015 info->callbacks->einfo
10016 (_("%P: linkage table error against `%s'\n"),
10017 stub_entry->root.string);
10018 bfd_set_error (bfd_error_bad_value);
10019 htab->stub_error = TRUE;
10023 if (info->emitrelocations)
10025 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10028 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10029 if (bfd_big_endian (info->output_bfd))
10030 r[0].r_offset += 2;
10031 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10032 r[0].r_offset += 4;
10033 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10034 r[0].r_addend = dest;
10035 if (PPC_HA (off) != 0)
10037 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10038 r[1].r_offset = r[0].r_offset + 4;
10039 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10040 r[1].r_addend = r[0].r_addend;
10044 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10046 if (PPC_HA (off) != 0)
10049 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10051 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10056 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10061 bfd_vma r2off = get_r2off (info, stub_entry);
10065 htab->stub_error = TRUE;
10069 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10072 if (PPC_HA (off) != 0)
10075 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10077 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10082 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10086 if (PPC_HA (r2off) != 0)
10089 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10092 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10095 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
10097 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10100 case ppc_stub_plt_call:
10101 case ppc_stub_plt_call_r2save:
10102 if (stub_entry->h != NULL
10103 && stub_entry->h->is_func_descriptor
10104 && stub_entry->h->oh != NULL)
10106 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10108 /* If the old-ABI "dot-symbol" is undefined make it weak so
10109 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10110 FIXME: We used to define the symbol on one of the call
10111 stubs instead, which is why we test symbol section id
10112 against htab->top_id in various places. Likely all
10113 these checks could now disappear. */
10114 if (fh->elf.root.type == bfd_link_hash_undefined)
10115 fh->elf.root.type = bfd_link_hash_undefweak;
10116 /* Stop undo_symbol_twiddle changing it back to undefined. */
10117 fh->was_undefined = 0;
10120 /* Now build the stub. */
10121 dest = stub_entry->plt_ent->plt.offset & ~1;
10122 if (dest >= (bfd_vma) -2)
10126 if (!htab->elf.dynamic_sections_created
10127 || stub_entry->h == NULL
10128 || stub_entry->h->elf.dynindx == -1)
10131 dest += plt->output_offset + plt->output_section->vma;
10133 if (stub_entry->h == NULL
10134 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10136 Elf_Internal_Rela rela;
10139 rela.r_offset = dest;
10140 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10141 rela.r_addend = (stub_entry->target_value
10142 + stub_entry->target_section->output_offset
10143 + stub_entry->target_section->output_section->vma);
10145 rl = (htab->reliplt->contents
10146 + (htab->reliplt->reloc_count++
10147 * sizeof (Elf64_External_Rela)));
10148 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10149 stub_entry->plt_ent->plt.offset |= 1;
10153 - elf_gp (plt->output_section->owner)
10154 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10156 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10158 info->callbacks->einfo
10159 (_("%P: linkage table error against `%s'\n"),
10160 stub_entry->h != NULL
10161 ? stub_entry->h->elf.root.root.string
10163 bfd_set_error (bfd_error_bad_value);
10164 htab->stub_error = TRUE;
10168 if (htab->plt_stub_align != 0)
10170 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10172 stub_entry->stub_sec->size += pad;
10173 stub_entry->stub_offset = stub_entry->stub_sec->size;
10178 if (info->emitrelocations)
10180 r = get_relocs (stub_entry->stub_sec,
10182 + (PPC_HA (off) != 0)
10183 + (htab->plt_static_chain
10184 && PPC_HA (off + 16) == PPC_HA (off))));
10187 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10188 if (bfd_big_endian (info->output_bfd))
10189 r[0].r_offset += 2;
10190 r[0].r_addend = dest;
10192 if (stub_entry->h != NULL
10193 && (stub_entry->h == htab->tls_get_addr_fd
10194 || stub_entry->h == htab->tls_get_addr)
10195 && !htab->no_tls_get_addr_opt)
10196 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10198 p = build_plt_stub (htab, stub_entry, loc, off, r);
10207 stub_entry->stub_sec->size += size;
10209 if (htab->emit_stub_syms)
10211 struct elf_link_hash_entry *h;
10214 const char *const stub_str[] = { "long_branch",
10215 "long_branch_r2off",
10217 "plt_branch_r2off",
10221 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10222 len2 = strlen (stub_entry->root.string);
10223 name = bfd_malloc (len1 + len2 + 2);
10226 memcpy (name, stub_entry->root.string, 9);
10227 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10228 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10229 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10232 if (h->root.type == bfd_link_hash_new)
10234 h->root.type = bfd_link_hash_defined;
10235 h->root.u.def.section = stub_entry->stub_sec;
10236 h->root.u.def.value = stub_entry->stub_offset;
10237 h->ref_regular = 1;
10238 h->def_regular = 1;
10239 h->ref_regular_nonweak = 1;
10240 h->forced_local = 1;
10248 /* As above, but don't actually build the stub. Just bump offset so
10249 we know stub section sizes, and select plt_branch stubs where
10250 long_branch stubs won't do. */
10253 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10255 struct ppc_stub_hash_entry *stub_entry;
10256 struct bfd_link_info *info;
10257 struct ppc_link_hash_table *htab;
10261 /* Massage our args to the form they really have. */
10262 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10265 htab = ppc_hash_table (info);
10269 if (stub_entry->stub_type == ppc_stub_plt_call
10270 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10273 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10274 if (off >= (bfd_vma) -2)
10277 if (!htab->elf.dynamic_sections_created
10278 || stub_entry->h == NULL
10279 || stub_entry->h->elf.dynindx == -1)
10281 off += (plt->output_offset
10282 + plt->output_section->vma
10283 - elf_gp (plt->output_section->owner)
10284 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10286 size = plt_stub_size (htab, stub_entry, off);
10287 if (htab->plt_stub_align)
10288 size += plt_stub_pad (htab, stub_entry, off);
10289 if (info->emitrelocations)
10291 stub_entry->stub_sec->reloc_count
10293 + (PPC_HA (off) != 0)
10294 + (htab->plt_static_chain
10295 && PPC_HA (off + 16) == PPC_HA (off)));
10296 stub_entry->stub_sec->flags |= SEC_RELOC;
10301 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10305 off = (stub_entry->target_value
10306 + stub_entry->target_section->output_offset
10307 + stub_entry->target_section->output_section->vma);
10308 off -= (stub_entry->stub_sec->size
10309 + stub_entry->stub_sec->output_offset
10310 + stub_entry->stub_sec->output_section->vma);
10312 /* Reset the stub type from the plt variant in case we now
10313 can reach with a shorter stub. */
10314 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10315 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10318 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10320 r2off = get_r2off (info, stub_entry);
10323 htab->stub_error = TRUE;
10327 if (PPC_HA (r2off) != 0)
10332 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10333 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10335 struct ppc_branch_hash_entry *br_entry;
10337 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10338 stub_entry->root.string + 9,
10340 if (br_entry == NULL)
10342 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10343 stub_entry->root.string);
10344 htab->stub_error = TRUE;
10348 if (br_entry->iter != htab->stub_iteration)
10350 br_entry->iter = htab->stub_iteration;
10351 br_entry->offset = htab->brlt->size;
10352 htab->brlt->size += 8;
10354 if (htab->relbrlt != NULL)
10355 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10356 else if (info->emitrelocations)
10358 htab->brlt->reloc_count += 1;
10359 htab->brlt->flags |= SEC_RELOC;
10363 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10364 off = (br_entry->offset
10365 + htab->brlt->output_offset
10366 + htab->brlt->output_section->vma
10367 - elf_gp (htab->brlt->output_section->owner)
10368 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10370 if (info->emitrelocations)
10372 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10373 stub_entry->stub_sec->flags |= SEC_RELOC;
10376 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10379 if (PPC_HA (off) != 0)
10385 if (PPC_HA (off) != 0)
10388 if (PPC_HA (r2off) != 0)
10392 else if (info->emitrelocations)
10394 stub_entry->stub_sec->reloc_count += 1;
10395 stub_entry->stub_sec->flags |= SEC_RELOC;
10399 stub_entry->stub_sec->size += size;
10403 /* Set up various things so that we can make a list of input sections
10404 for each output section included in the link. Returns -1 on error,
10405 0 when no stubs will be needed, and 1 on success. */
10408 ppc64_elf_setup_section_lists
10409 (struct bfd_link_info *info,
10410 asection *(*add_stub_section) (const char *, asection *),
10411 void (*layout_sections_again) (void))
10414 int top_id, top_index, id;
10416 asection **input_list;
10418 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10422 /* Stash our params away. */
10423 htab->add_stub_section = add_stub_section;
10424 htab->layout_sections_again = layout_sections_again;
10426 if (htab->brlt == NULL)
10429 /* Find the top input section id. */
10430 for (input_bfd = info->input_bfds, top_id = 3;
10432 input_bfd = input_bfd->link_next)
10434 for (section = input_bfd->sections;
10436 section = section->next)
10438 if (top_id < section->id)
10439 top_id = section->id;
10443 htab->top_id = top_id;
10444 amt = sizeof (struct map_stub) * (top_id + 1);
10445 htab->stub_group = bfd_zmalloc (amt);
10446 if (htab->stub_group == NULL)
10449 /* Set toc_off for com, und, abs and ind sections. */
10450 for (id = 0; id < 3; id++)
10451 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10453 /* We can't use output_bfd->section_count here to find the top output
10454 section index as some sections may have been removed, and
10455 strip_excluded_output_sections doesn't renumber the indices. */
10456 for (section = info->output_bfd->sections, top_index = 0;
10458 section = section->next)
10460 if (top_index < section->index)
10461 top_index = section->index;
10464 htab->top_index = top_index;
10465 amt = sizeof (asection *) * (top_index + 1);
10466 input_list = bfd_zmalloc (amt);
10467 htab->input_list = input_list;
10468 if (input_list == NULL)
10474 /* Set up for first pass at multitoc partitioning. */
10477 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10479 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10481 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10482 htab->toc_curr = elf_gp (info->output_bfd);
10483 htab->toc_bfd = NULL;
10484 htab->toc_first_sec = NULL;
10487 /* The linker repeatedly calls this function for each TOC input section
10488 and linker generated GOT section. Group input bfds such that the toc
10489 within a group is less than 64k in size. */
10492 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10494 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10495 bfd_vma addr, off, limit;
10500 if (!htab->second_toc_pass)
10502 /* Keep track of the first .toc or .got section for this input bfd. */
10503 if (htab->toc_bfd != isec->owner)
10505 htab->toc_bfd = isec->owner;
10506 htab->toc_first_sec = isec;
10509 addr = isec->output_offset + isec->output_section->vma;
10510 off = addr - htab->toc_curr;
10511 limit = 0x80008000;
10512 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10514 if (off + isec->size > limit)
10516 addr = (htab->toc_first_sec->output_offset
10517 + htab->toc_first_sec->output_section->vma);
10518 htab->toc_curr = addr;
10521 /* toc_curr is the base address of this toc group. Set elf_gp
10522 for the input section to be the offset relative to the
10523 output toc base plus 0x8000. Making the input elf_gp an
10524 offset allows us to move the toc as a whole without
10525 recalculating input elf_gp. */
10526 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10527 off += TOC_BASE_OFF;
10529 /* Die if someone uses a linker script that doesn't keep input
10530 file .toc and .got together. */
10531 if (elf_gp (isec->owner) != 0
10532 && elf_gp (isec->owner) != off)
10535 elf_gp (isec->owner) = off;
10539 /* During the second pass toc_first_sec points to the start of
10540 a toc group, and toc_curr is used to track the old elf_gp.
10541 We use toc_bfd to ensure we only look at each bfd once. */
10542 if (htab->toc_bfd == isec->owner)
10544 htab->toc_bfd = isec->owner;
10546 if (htab->toc_first_sec == NULL
10547 || htab->toc_curr != elf_gp (isec->owner))
10549 htab->toc_curr = elf_gp (isec->owner);
10550 htab->toc_first_sec = isec;
10552 addr = (htab->toc_first_sec->output_offset
10553 + htab->toc_first_sec->output_section->vma);
10554 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10555 elf_gp (isec->owner) = off;
10560 /* Called via elf_link_hash_traverse to merge GOT entries for global
10564 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10566 if (h->root.type == bfd_link_hash_indirect)
10569 merge_got_entries (&h->got.glist);
10574 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10578 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10580 struct got_entry *gent;
10582 if (h->root.type == bfd_link_hash_indirect)
10585 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10586 if (!gent->is_indirect)
10587 allocate_got (h, (struct bfd_link_info *) inf, gent);
10591 /* Called on the first multitoc pass after the last call to
10592 ppc64_elf_next_toc_section. This function removes duplicate GOT
10596 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10598 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10599 struct bfd *ibfd, *ibfd2;
10600 bfd_boolean done_something;
10602 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10604 if (!htab->do_multi_toc)
10607 /* Merge global sym got entries within a toc group. */
10608 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10610 /* And tlsld_got. */
10611 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10613 struct got_entry *ent, *ent2;
10615 if (!is_ppc64_elf (ibfd))
10618 ent = ppc64_tlsld_got (ibfd);
10619 if (!ent->is_indirect
10620 && ent->got.offset != (bfd_vma) -1)
10622 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10624 if (!is_ppc64_elf (ibfd2))
10627 ent2 = ppc64_tlsld_got (ibfd2);
10628 if (!ent2->is_indirect
10629 && ent2->got.offset != (bfd_vma) -1
10630 && elf_gp (ibfd2) == elf_gp (ibfd))
10632 ent2->is_indirect = TRUE;
10633 ent2->got.ent = ent;
10639 /* Zap sizes of got sections. */
10640 htab->reliplt->rawsize = htab->reliplt->size;
10641 htab->reliplt->size -= htab->got_reli_size;
10642 htab->got_reli_size = 0;
10644 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10646 asection *got, *relgot;
10648 if (!is_ppc64_elf (ibfd))
10651 got = ppc64_elf_tdata (ibfd)->got;
10654 got->rawsize = got->size;
10656 relgot = ppc64_elf_tdata (ibfd)->relgot;
10657 relgot->rawsize = relgot->size;
10662 /* Now reallocate the got, local syms first. We don't need to
10663 allocate section contents again since we never increase size. */
10664 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10666 struct got_entry **lgot_ents;
10667 struct got_entry **end_lgot_ents;
10668 struct plt_entry **local_plt;
10669 struct plt_entry **end_local_plt;
10670 unsigned char *lgot_masks;
10671 bfd_size_type locsymcount;
10672 Elf_Internal_Shdr *symtab_hdr;
10673 asection *s, *srel;
10675 if (!is_ppc64_elf (ibfd))
10678 lgot_ents = elf_local_got_ents (ibfd);
10682 symtab_hdr = &elf_symtab_hdr (ibfd);
10683 locsymcount = symtab_hdr->sh_info;
10684 end_lgot_ents = lgot_ents + locsymcount;
10685 local_plt = (struct plt_entry **) end_lgot_ents;
10686 end_local_plt = local_plt + locsymcount;
10687 lgot_masks = (unsigned char *) end_local_plt;
10688 s = ppc64_elf_tdata (ibfd)->got;
10689 srel = ppc64_elf_tdata (ibfd)->relgot;
10690 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10692 struct got_entry *ent;
10694 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10696 unsigned int num = 1;
10697 ent->got.offset = s->size;
10698 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10700 s->size += num * 8;
10702 srel->size += num * sizeof (Elf64_External_Rela);
10703 else if ((*lgot_masks & PLT_IFUNC) != 0)
10705 htab->reliplt->size
10706 += num * sizeof (Elf64_External_Rela);
10707 htab->got_reli_size
10708 += num * sizeof (Elf64_External_Rela);
10714 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10716 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10718 struct got_entry *ent;
10720 if (!is_ppc64_elf (ibfd))
10723 ent = ppc64_tlsld_got (ibfd);
10724 if (!ent->is_indirect
10725 && ent->got.offset != (bfd_vma) -1)
10727 asection *s = ppc64_elf_tdata (ibfd)->got;
10728 ent->got.offset = s->size;
10732 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10733 srel->size += sizeof (Elf64_External_Rela);
10738 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10739 if (!done_something)
10740 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10744 if (!is_ppc64_elf (ibfd))
10747 got = ppc64_elf_tdata (ibfd)->got;
10750 done_something = got->rawsize != got->size;
10751 if (done_something)
10756 if (done_something)
10757 (*htab->layout_sections_again) ();
10759 /* Set up for second pass over toc sections to recalculate elf_gp
10760 on input sections. */
10761 htab->toc_bfd = NULL;
10762 htab->toc_first_sec = NULL;
10763 htab->second_toc_pass = TRUE;
10764 return done_something;
10767 /* Called after second pass of multitoc partitioning. */
10770 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10772 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10774 /* After the second pass, toc_curr tracks the TOC offset used
10775 for code sections below in ppc64_elf_next_input_section. */
10776 htab->toc_curr = TOC_BASE_OFF;
10779 /* No toc references were found in ISEC. If the code in ISEC makes no
10780 calls, then there's no need to use toc adjusting stubs when branching
10781 into ISEC. Actually, indirect calls from ISEC are OK as they will
10782 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10783 needed, and 2 if a cyclical call-graph was found but no other reason
10784 for a stub was detected. If called from the top level, a return of
10785 2 means the same as a return of 0. */
10788 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10792 /* Mark this section as checked. */
10793 isec->call_check_done = 1;
10795 /* We know none of our code bearing sections will need toc stubs. */
10796 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10799 if (isec->size == 0)
10802 if (isec->output_section == NULL)
10806 if (isec->reloc_count != 0)
10808 Elf_Internal_Rela *relstart, *rel;
10809 Elf_Internal_Sym *local_syms;
10810 struct ppc_link_hash_table *htab;
10812 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10813 info->keep_memory);
10814 if (relstart == NULL)
10817 /* Look for branches to outside of this section. */
10819 htab = ppc_hash_table (info);
10823 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10825 enum elf_ppc64_reloc_type r_type;
10826 unsigned long r_symndx;
10827 struct elf_link_hash_entry *h;
10828 struct ppc_link_hash_entry *eh;
10829 Elf_Internal_Sym *sym;
10831 struct _opd_sec_data *opd;
10835 r_type = ELF64_R_TYPE (rel->r_info);
10836 if (r_type != R_PPC64_REL24
10837 && r_type != R_PPC64_REL14
10838 && r_type != R_PPC64_REL14_BRTAKEN
10839 && r_type != R_PPC64_REL14_BRNTAKEN)
10842 r_symndx = ELF64_R_SYM (rel->r_info);
10843 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10850 /* Calls to dynamic lib functions go through a plt call stub
10852 eh = (struct ppc_link_hash_entry *) h;
10854 && (eh->elf.plt.plist != NULL
10856 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10862 if (sym_sec == NULL)
10863 /* Ignore other undefined symbols. */
10866 /* Assume branches to other sections not included in the
10867 link need stubs too, to cover -R and absolute syms. */
10868 if (sym_sec->output_section == NULL)
10875 sym_value = sym->st_value;
10878 if (h->root.type != bfd_link_hash_defined
10879 && h->root.type != bfd_link_hash_defweak)
10881 sym_value = h->root.u.def.value;
10883 sym_value += rel->r_addend;
10885 /* If this branch reloc uses an opd sym, find the code section. */
10886 opd = get_opd_info (sym_sec);
10889 if (h == NULL && opd->adjust != NULL)
10893 adjust = opd->adjust[sym->st_value / 8];
10895 /* Assume deleted functions won't ever be called. */
10897 sym_value += adjust;
10900 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10901 if (dest == (bfd_vma) -1)
10906 + sym_sec->output_offset
10907 + sym_sec->output_section->vma);
10909 /* Ignore branch to self. */
10910 if (sym_sec == isec)
10913 /* If the called function uses the toc, we need a stub. */
10914 if (sym_sec->has_toc_reloc
10915 || sym_sec->makes_toc_func_call)
10921 /* Assume any branch that needs a long branch stub might in fact
10922 need a plt_branch stub. A plt_branch stub uses r2. */
10923 else if (dest - (isec->output_offset
10924 + isec->output_section->vma
10925 + rel->r_offset) + (1 << 25) >= (2 << 25))
10931 /* If calling back to a section in the process of being
10932 tested, we can't say for sure that no toc adjusting stubs
10933 are needed, so don't return zero. */
10934 else if (sym_sec->call_check_in_progress)
10937 /* Branches to another section that itself doesn't have any TOC
10938 references are OK. Recursively call ourselves to check. */
10939 else if (!sym_sec->call_check_done)
10943 /* Mark current section as indeterminate, so that other
10944 sections that call back to current won't be marked as
10946 isec->call_check_in_progress = 1;
10947 recur = toc_adjusting_stub_needed (info, sym_sec);
10948 isec->call_check_in_progress = 0;
10959 if (local_syms != NULL
10960 && (elf_symtab_hdr (isec->owner).contents
10961 != (unsigned char *) local_syms))
10963 if (elf_section_data (isec)->relocs != relstart)
10968 && isec->map_head.s != NULL
10969 && (strcmp (isec->output_section->name, ".init") == 0
10970 || strcmp (isec->output_section->name, ".fini") == 0))
10972 if (isec->map_head.s->has_toc_reloc
10973 || isec->map_head.s->makes_toc_func_call)
10975 else if (!isec->map_head.s->call_check_done)
10978 isec->call_check_in_progress = 1;
10979 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
10980 isec->call_check_in_progress = 0;
10987 isec->makes_toc_func_call = 1;
10992 /* The linker repeatedly calls this function for each input section,
10993 in the order that input sections are linked into output sections.
10994 Build lists of input sections to determine groupings between which
10995 we may insert linker stubs. */
10998 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11000 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11005 if ((isec->output_section->flags & SEC_CODE) != 0
11006 && isec->output_section->index <= htab->top_index)
11008 asection **list = htab->input_list + isec->output_section->index;
11009 /* Steal the link_sec pointer for our list. */
11010 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11011 /* This happens to make the list in reverse order,
11012 which is what we want. */
11013 PREV_SEC (isec) = *list;
11017 if (htab->multi_toc_needed)
11019 /* If a code section has a function that uses the TOC then we need
11020 to use the right TOC (obviously). Also, make sure that .opd gets
11021 the correct TOC value for R_PPC64_TOC relocs that don't have or
11022 can't find their function symbol (shouldn't ever happen now).
11023 Also specially treat .fixup for the linux kernel. .fixup
11024 contains branches, but only back to the function that hit an
11026 if (isec->has_toc_reloc
11027 || (isec->flags & SEC_CODE) == 0
11028 || strcmp (isec->name, ".fixup") == 0)
11030 if (elf_gp (isec->owner) != 0)
11031 htab->toc_curr = elf_gp (isec->owner);
11035 if (!isec->call_check_done
11036 && toc_adjusting_stub_needed (info, isec) < 0)
11038 /* If we make a local call from this section, ie. a branch
11039 without a following nop, then we have no place to put a
11040 toc restoring insn. We must use the same toc group as
11042 Testing makes_toc_func_call actually tests for *any*
11043 calls to functions that need a good toc pointer. A more
11044 precise test would be better, as this one will set
11045 incorrect values for pasted .init/.fini fragments.
11046 (Fixed later in check_pasted_section.) */
11047 if (isec->makes_toc_func_call
11048 && elf_gp (isec->owner) != 0)
11049 htab->toc_curr = elf_gp (isec->owner);
11053 /* Functions that don't use the TOC can belong in any TOC group.
11054 Use the last TOC base. */
11055 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11059 /* Check that all .init and .fini sections use the same toc, if they
11060 have toc relocs. */
11063 check_pasted_section (struct bfd_link_info *info, const char *name)
11065 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11069 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11070 bfd_vma toc_off = 0;
11073 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11074 if (i->has_toc_reloc)
11077 toc_off = htab->stub_group[i->id].toc_off;
11078 else if (toc_off != htab->stub_group[i->id].toc_off)
11083 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11084 if (i->makes_toc_func_call)
11086 toc_off = htab->stub_group[i->id].toc_off;
11090 /* Make sure the whole pasted function uses the same toc offset. */
11092 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11093 htab->stub_group[i->id].toc_off = toc_off;
11099 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11101 return (check_pasted_section (info, ".init")
11102 & check_pasted_section (info, ".fini"));
11105 /* See whether we can group stub sections together. Grouping stub
11106 sections may result in fewer stubs. More importantly, we need to
11107 put all .init* and .fini* stubs at the beginning of the .init or
11108 .fini output sections respectively, because glibc splits the
11109 _init and _fini functions into multiple parts. Putting a stub in
11110 the middle of a function is not a good idea. */
11113 group_sections (struct ppc_link_hash_table *htab,
11114 bfd_size_type stub_group_size,
11115 bfd_boolean stubs_always_before_branch)
11118 bfd_size_type stub14_group_size;
11119 bfd_boolean suppress_size_errors;
11121 suppress_size_errors = FALSE;
11122 stub14_group_size = stub_group_size;
11123 if (stub_group_size == 1)
11125 /* Default values. */
11126 if (stubs_always_before_branch)
11128 stub_group_size = 0x1e00000;
11129 stub14_group_size = 0x7800;
11133 stub_group_size = 0x1c00000;
11134 stub14_group_size = 0x7000;
11136 suppress_size_errors = TRUE;
11139 list = htab->input_list + htab->top_index;
11142 asection *tail = *list;
11143 while (tail != NULL)
11147 bfd_size_type total;
11148 bfd_boolean big_sec;
11152 total = tail->size;
11153 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11154 && ppc64_elf_section_data (tail)->has_14bit_branch
11155 ? stub14_group_size : stub_group_size);
11156 if (big_sec && !suppress_size_errors)
11157 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11158 tail->owner, tail);
11159 curr_toc = htab->stub_group[tail->id].toc_off;
11161 while ((prev = PREV_SEC (curr)) != NULL
11162 && ((total += curr->output_offset - prev->output_offset)
11163 < (ppc64_elf_section_data (prev) != NULL
11164 && ppc64_elf_section_data (prev)->has_14bit_branch
11165 ? stub14_group_size : stub_group_size))
11166 && htab->stub_group[prev->id].toc_off == curr_toc)
11169 /* OK, the size from the start of CURR to the end is less
11170 than stub_group_size and thus can be handled by one stub
11171 section. (or the tail section is itself larger than
11172 stub_group_size, in which case we may be toast.) We
11173 should really be keeping track of the total size of stubs
11174 added here, as stubs contribute to the final output
11175 section size. That's a little tricky, and this way will
11176 only break if stubs added make the total size more than
11177 2^25, ie. for the default stub_group_size, if stubs total
11178 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11181 prev = PREV_SEC (tail);
11182 /* Set up this stub group. */
11183 htab->stub_group[tail->id].link_sec = curr;
11185 while (tail != curr && (tail = prev) != NULL);
11187 /* But wait, there's more! Input sections up to stub_group_size
11188 bytes before the stub section can be handled by it too.
11189 Don't do this if we have a really large section after the
11190 stubs, as adding more stubs increases the chance that
11191 branches may not reach into the stub section. */
11192 if (!stubs_always_before_branch && !big_sec)
11195 while (prev != NULL
11196 && ((total += tail->output_offset - prev->output_offset)
11197 < (ppc64_elf_section_data (prev) != NULL
11198 && ppc64_elf_section_data (prev)->has_14bit_branch
11199 ? stub14_group_size : stub_group_size))
11200 && htab->stub_group[prev->id].toc_off == curr_toc)
11203 prev = PREV_SEC (tail);
11204 htab->stub_group[tail->id].link_sec = curr;
11210 while (list-- != htab->input_list);
11211 free (htab->input_list);
11215 static const unsigned char glink_eh_frame_cie[] =
11217 0, 0, 0, 16, /* length. */
11218 0, 0, 0, 0, /* id. */
11219 1, /* CIE version. */
11220 'z', 'R', 0, /* Augmentation string. */
11221 4, /* Code alignment. */
11222 0x78, /* Data alignment. */
11224 1, /* Augmentation size. */
11225 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11226 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11229 /* Stripping output sections is normally done before dynamic section
11230 symbols have been allocated. This function is called later, and
11231 handles cases like htab->brlt which is mapped to its own output
11235 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11237 if (isec->size == 0
11238 && isec->output_section->size == 0
11239 && !bfd_section_removed_from_list (info->output_bfd,
11240 isec->output_section)
11241 && elf_section_data (isec->output_section)->dynindx == 0)
11243 isec->output_section->flags |= SEC_EXCLUDE;
11244 bfd_section_list_remove (info->output_bfd, isec->output_section);
11245 info->output_bfd->section_count--;
11249 /* Determine and set the size of the stub section for a final link.
11251 The basic idea here is to examine all the relocations looking for
11252 PC-relative calls to a target that is unreachable with a "bl"
11256 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11257 bfd_boolean plt_static_chain, int plt_thread_safe,
11258 int plt_stub_align)
11260 bfd_size_type stub_group_size;
11261 bfd_boolean stubs_always_before_branch;
11262 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11267 htab->plt_static_chain = plt_static_chain;
11268 htab->plt_stub_align = plt_stub_align;
11269 if (plt_thread_safe == -1)
11271 const char *const thread_starter[] =
11275 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11277 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11278 "mq_notify", "create_timer",
11282 "GOMP_parallel_start",
11283 "GOMP_parallel_loop_static_start",
11284 "GOMP_parallel_loop_dynamic_start",
11285 "GOMP_parallel_loop_guided_start",
11286 "GOMP_parallel_loop_runtime_start",
11287 "GOMP_parallel_sections_start",
11291 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11293 struct elf_link_hash_entry *h;
11294 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11295 FALSE, FALSE, TRUE);
11296 plt_thread_safe = h != NULL && h->ref_regular;
11297 if (plt_thread_safe)
11301 htab->plt_thread_safe = plt_thread_safe;
11302 stubs_always_before_branch = group_size < 0;
11303 if (group_size < 0)
11304 stub_group_size = -group_size;
11306 stub_group_size = group_size;
11308 group_sections (htab, stub_group_size, stubs_always_before_branch);
11313 unsigned int bfd_indx;
11314 asection *stub_sec;
11316 htab->stub_iteration += 1;
11318 for (input_bfd = info->input_bfds, bfd_indx = 0;
11320 input_bfd = input_bfd->link_next, bfd_indx++)
11322 Elf_Internal_Shdr *symtab_hdr;
11324 Elf_Internal_Sym *local_syms = NULL;
11326 if (!is_ppc64_elf (input_bfd))
11329 /* We'll need the symbol table in a second. */
11330 symtab_hdr = &elf_symtab_hdr (input_bfd);
11331 if (symtab_hdr->sh_info == 0)
11334 /* Walk over each section attached to the input bfd. */
11335 for (section = input_bfd->sections;
11337 section = section->next)
11339 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11341 /* If there aren't any relocs, then there's nothing more
11343 if ((section->flags & SEC_RELOC) == 0
11344 || (section->flags & SEC_ALLOC) == 0
11345 || (section->flags & SEC_LOAD) == 0
11346 || (section->flags & SEC_CODE) == 0
11347 || section->reloc_count == 0)
11350 /* If this section is a link-once section that will be
11351 discarded, then don't create any stubs. */
11352 if (section->output_section == NULL
11353 || section->output_section->owner != info->output_bfd)
11356 /* Get the relocs. */
11358 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11359 info->keep_memory);
11360 if (internal_relocs == NULL)
11361 goto error_ret_free_local;
11363 /* Now examine each relocation. */
11364 irela = internal_relocs;
11365 irelaend = irela + section->reloc_count;
11366 for (; irela < irelaend; irela++)
11368 enum elf_ppc64_reloc_type r_type;
11369 unsigned int r_indx;
11370 enum ppc_stub_type stub_type;
11371 struct ppc_stub_hash_entry *stub_entry;
11372 asection *sym_sec, *code_sec;
11373 bfd_vma sym_value, code_value;
11374 bfd_vma destination;
11375 bfd_boolean ok_dest;
11376 struct ppc_link_hash_entry *hash;
11377 struct ppc_link_hash_entry *fdh;
11378 struct elf_link_hash_entry *h;
11379 Elf_Internal_Sym *sym;
11381 const asection *id_sec;
11382 struct _opd_sec_data *opd;
11383 struct plt_entry *plt_ent;
11385 r_type = ELF64_R_TYPE (irela->r_info);
11386 r_indx = ELF64_R_SYM (irela->r_info);
11388 if (r_type >= R_PPC64_max)
11390 bfd_set_error (bfd_error_bad_value);
11391 goto error_ret_free_internal;
11394 /* Only look for stubs on branch instructions. */
11395 if (r_type != R_PPC64_REL24
11396 && r_type != R_PPC64_REL14
11397 && r_type != R_PPC64_REL14_BRTAKEN
11398 && r_type != R_PPC64_REL14_BRNTAKEN)
11401 /* Now determine the call target, its name, value,
11403 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11404 r_indx, input_bfd))
11405 goto error_ret_free_internal;
11406 hash = (struct ppc_link_hash_entry *) h;
11413 sym_value = sym->st_value;
11416 else if (hash->elf.root.type == bfd_link_hash_defined
11417 || hash->elf.root.type == bfd_link_hash_defweak)
11419 sym_value = hash->elf.root.u.def.value;
11420 if (sym_sec->output_section != NULL)
11423 else if (hash->elf.root.type == bfd_link_hash_undefweak
11424 || hash->elf.root.type == bfd_link_hash_undefined)
11426 /* Recognise an old ABI func code entry sym, and
11427 use the func descriptor sym instead if it is
11429 if (hash->elf.root.root.string[0] == '.'
11430 && (fdh = lookup_fdh (hash, htab)) != NULL)
11432 if (fdh->elf.root.type == bfd_link_hash_defined
11433 || fdh->elf.root.type == bfd_link_hash_defweak)
11435 sym_sec = fdh->elf.root.u.def.section;
11436 sym_value = fdh->elf.root.u.def.value;
11437 if (sym_sec->output_section != NULL)
11446 bfd_set_error (bfd_error_bad_value);
11447 goto error_ret_free_internal;
11453 sym_value += irela->r_addend;
11454 destination = (sym_value
11455 + sym_sec->output_offset
11456 + sym_sec->output_section->vma);
11459 code_sec = sym_sec;
11460 code_value = sym_value;
11461 opd = get_opd_info (sym_sec);
11466 if (hash == NULL && opd->adjust != NULL)
11468 long adjust = opd->adjust[sym_value / 8];
11471 code_value += adjust;
11472 sym_value += adjust;
11474 dest = opd_entry_value (sym_sec, sym_value,
11475 &code_sec, &code_value);
11476 if (dest != (bfd_vma) -1)
11478 destination = dest;
11481 /* Fixup old ABI sym to point at code
11483 hash->elf.root.type = bfd_link_hash_defweak;
11484 hash->elf.root.u.def.section = code_sec;
11485 hash->elf.root.u.def.value = code_value;
11490 /* Determine what (if any) linker stub is needed. */
11492 stub_type = ppc_type_of_stub (section, irela, &hash,
11493 &plt_ent, destination);
11495 if (stub_type != ppc_stub_plt_call)
11497 /* Check whether we need a TOC adjusting stub.
11498 Since the linker pastes together pieces from
11499 different object files when creating the
11500 _init and _fini functions, it may be that a
11501 call to what looks like a local sym is in
11502 fact a call needing a TOC adjustment. */
11503 if (code_sec != NULL
11504 && code_sec->output_section != NULL
11505 && (htab->stub_group[code_sec->id].toc_off
11506 != htab->stub_group[section->id].toc_off)
11507 && (code_sec->has_toc_reloc
11508 || code_sec->makes_toc_func_call))
11509 stub_type = ppc_stub_long_branch_r2off;
11512 if (stub_type == ppc_stub_none)
11515 /* __tls_get_addr calls might be eliminated. */
11516 if (stub_type != ppc_stub_plt_call
11518 && (hash == htab->tls_get_addr
11519 || hash == htab->tls_get_addr_fd)
11520 && section->has_tls_reloc
11521 && irela != internal_relocs)
11523 /* Get tls info. */
11524 unsigned char *tls_mask;
11526 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11527 irela - 1, input_bfd))
11528 goto error_ret_free_internal;
11529 if (*tls_mask != 0)
11533 if (stub_type == ppc_stub_plt_call
11534 && irela + 1 < irelaend
11535 && irela[1].r_offset == irela->r_offset + 4
11536 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
11538 if (!tocsave_find (htab, INSERT,
11539 &local_syms, irela + 1, input_bfd))
11540 goto error_ret_free_internal;
11542 else if (stub_type == ppc_stub_plt_call)
11543 stub_type = ppc_stub_plt_call_r2save;
11545 /* Support for grouping stub sections. */
11546 id_sec = htab->stub_group[section->id].link_sec;
11548 /* Get the name of this stub. */
11549 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11551 goto error_ret_free_internal;
11553 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11554 stub_name, FALSE, FALSE);
11555 if (stub_entry != NULL)
11557 /* The proper stub has already been created. */
11559 if (stub_type == ppc_stub_plt_call_r2save)
11560 stub_entry->stub_type = stub_type;
11564 stub_entry = ppc_add_stub (stub_name, section, info);
11565 if (stub_entry == NULL)
11568 error_ret_free_internal:
11569 if (elf_section_data (section)->relocs == NULL)
11570 free (internal_relocs);
11571 error_ret_free_local:
11572 if (local_syms != NULL
11573 && (symtab_hdr->contents
11574 != (unsigned char *) local_syms))
11579 stub_entry->stub_type = stub_type;
11580 if (stub_type != ppc_stub_plt_call
11581 && stub_type != ppc_stub_plt_call_r2save)
11583 stub_entry->target_value = code_value;
11584 stub_entry->target_section = code_sec;
11588 stub_entry->target_value = sym_value;
11589 stub_entry->target_section = sym_sec;
11591 stub_entry->h = hash;
11592 stub_entry->plt_ent = plt_ent;
11593 stub_entry->addend = irela->r_addend;
11595 if (stub_entry->h != NULL)
11596 htab->stub_globals += 1;
11599 /* We're done with the internal relocs, free them. */
11600 if (elf_section_data (section)->relocs != internal_relocs)
11601 free (internal_relocs);
11604 if (local_syms != NULL
11605 && symtab_hdr->contents != (unsigned char *) local_syms)
11607 if (!info->keep_memory)
11610 symtab_hdr->contents = (unsigned char *) local_syms;
11614 /* We may have added some stubs. Find out the new size of the
11616 for (stub_sec = htab->stub_bfd->sections;
11618 stub_sec = stub_sec->next)
11619 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11621 stub_sec->rawsize = stub_sec->size;
11622 stub_sec->size = 0;
11623 stub_sec->reloc_count = 0;
11624 stub_sec->flags &= ~SEC_RELOC;
11627 htab->brlt->size = 0;
11628 htab->brlt->reloc_count = 0;
11629 htab->brlt->flags &= ~SEC_RELOC;
11630 if (htab->relbrlt != NULL)
11631 htab->relbrlt->size = 0;
11633 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11635 if (info->emitrelocations
11636 && htab->glink != NULL && htab->glink->size != 0)
11638 htab->glink->reloc_count = 1;
11639 htab->glink->flags |= SEC_RELOC;
11642 if (htab->glink_eh_frame != NULL
11643 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
11644 && (htab->glink_eh_frame->flags & SEC_EXCLUDE) == 0)
11646 bfd_size_type size = 0;
11648 for (stub_sec = htab->stub_bfd->sections;
11650 stub_sec = stub_sec->next)
11651 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11653 if (htab->glink != NULL && htab->glink->size != 0)
11656 size += sizeof (glink_eh_frame_cie);
11657 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11658 htab->glink_eh_frame->size = size;
11661 if (htab->plt_stub_align != 0)
11662 for (stub_sec = htab->stub_bfd->sections;
11664 stub_sec = stub_sec->next)
11665 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11666 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
11667 & (-1 << htab->plt_stub_align));
11669 for (stub_sec = htab->stub_bfd->sections;
11671 stub_sec = stub_sec->next)
11672 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11673 && stub_sec->rawsize != stub_sec->size)
11676 /* Exit from this loop when no stubs have been added, and no stubs
11677 have changed size. */
11678 if (stub_sec == NULL
11679 && (htab->glink_eh_frame == NULL
11680 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
11683 /* Ask the linker to do its stuff. */
11684 (*htab->layout_sections_again) ();
11687 maybe_strip_output (info, htab->brlt);
11688 if (htab->glink_eh_frame != NULL)
11689 maybe_strip_output (info, htab->glink_eh_frame);
11694 /* Called after we have determined section placement. If sections
11695 move, we'll be called again. Provide a value for TOCstart. */
11698 ppc64_elf_toc (bfd *obfd)
11703 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11704 order. The TOC starts where the first of these sections starts. */
11705 s = bfd_get_section_by_name (obfd, ".got");
11706 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11707 s = bfd_get_section_by_name (obfd, ".toc");
11708 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11709 s = bfd_get_section_by_name (obfd, ".tocbss");
11710 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11711 s = bfd_get_section_by_name (obfd, ".plt");
11712 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11714 /* This may happen for
11715 o references to TOC base (SYM@toc / TOC[tc0]) without a
11717 o bad linker script
11718 o --gc-sections and empty TOC sections
11720 FIXME: Warn user? */
11722 /* Look for a likely section. We probably won't even be
11724 for (s = obfd->sections; s != NULL; s = s->next)
11725 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11727 == (SEC_ALLOC | SEC_SMALL_DATA))
11730 for (s = obfd->sections; s != NULL; s = s->next)
11731 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11732 == (SEC_ALLOC | SEC_SMALL_DATA))
11735 for (s = obfd->sections; s != NULL; s = s->next)
11736 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11740 for (s = obfd->sections; s != NULL; s = s->next)
11741 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11747 TOCstart = s->output_section->vma + s->output_offset;
11752 /* Build all the stubs associated with the current output file.
11753 The stubs are kept in a hash table attached to the main linker
11754 hash table. This function is called via gldelf64ppc_finish. */
11757 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11758 struct bfd_link_info *info,
11761 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11762 asection *stub_sec;
11764 int stub_sec_count = 0;
11769 htab->emit_stub_syms = emit_stub_syms;
11771 /* Allocate memory to hold the linker stubs. */
11772 for (stub_sec = htab->stub_bfd->sections;
11774 stub_sec = stub_sec->next)
11775 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11776 && stub_sec->size != 0)
11778 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11779 if (stub_sec->contents == NULL)
11781 /* We want to check that built size is the same as calculated
11782 size. rawsize is a convenient location to use. */
11783 stub_sec->rawsize = stub_sec->size;
11784 stub_sec->size = 0;
11787 if (htab->glink != NULL && htab->glink->size != 0)
11792 /* Build the .glink plt call stub. */
11793 if (htab->emit_stub_syms)
11795 struct elf_link_hash_entry *h;
11796 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11797 TRUE, FALSE, FALSE);
11800 if (h->root.type == bfd_link_hash_new)
11802 h->root.type = bfd_link_hash_defined;
11803 h->root.u.def.section = htab->glink;
11804 h->root.u.def.value = 8;
11805 h->ref_regular = 1;
11806 h->def_regular = 1;
11807 h->ref_regular_nonweak = 1;
11808 h->forced_local = 1;
11812 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11813 if (info->emitrelocations)
11815 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11818 r->r_offset = (htab->glink->output_offset
11819 + htab->glink->output_section->vma);
11820 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11821 r->r_addend = plt0;
11823 p = htab->glink->contents;
11824 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11825 bfd_put_64 (htab->glink->owner, plt0, p);
11827 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11829 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11831 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11833 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11835 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11837 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11839 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11841 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11843 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11845 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11847 bfd_put_32 (htab->glink->owner, BCTR, p);
11849 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11851 bfd_put_32 (htab->glink->owner, NOP, p);
11855 /* Build the .glink lazy link call stubs. */
11857 while (p < htab->glink->contents + htab->glink->size)
11861 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11866 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11868 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11871 bfd_put_32 (htab->glink->owner,
11872 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11876 htab->glink->rawsize = p - htab->glink->contents;
11879 if (htab->brlt->size != 0)
11881 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11883 if (htab->brlt->contents == NULL)
11886 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11888 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11889 htab->relbrlt->size);
11890 if (htab->relbrlt->contents == NULL)
11894 if (htab->glink_eh_frame != NULL
11895 && htab->glink_eh_frame->size != 0)
11899 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
11902 htab->glink_eh_frame->contents = p;
11904 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11906 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
11907 /* CIE length (rewrite in case little-endian). */
11908 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
11909 p += sizeof (glink_eh_frame_cie);
11911 for (stub_sec = htab->stub_bfd->sections;
11913 stub_sec = stub_sec->next)
11914 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11917 bfd_put_32 (htab->elf.dynobj, 16, p);
11920 val = p - htab->glink_eh_frame->contents;
11921 bfd_put_32 (htab->elf.dynobj, val, p);
11923 /* Offset to stub section. */
11924 val = (stub_sec->output_section->vma
11925 + stub_sec->output_offset);
11926 val -= (htab->glink_eh_frame->output_section->vma
11927 + htab->glink_eh_frame->output_offset);
11928 val -= p - htab->glink_eh_frame->contents;
11929 if (val + 0x80000000 > 0xffffffff)
11931 info->callbacks->einfo
11932 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11936 bfd_put_32 (htab->elf.dynobj, val, p);
11938 /* stub section size. */
11939 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
11941 /* Augmentation. */
11946 if (htab->glink != NULL && htab->glink->size != 0)
11949 bfd_put_32 (htab->elf.dynobj, 20, p);
11952 val = p - htab->glink_eh_frame->contents;
11953 bfd_put_32 (htab->elf.dynobj, val, p);
11955 /* Offset to .glink. */
11956 val = (htab->glink->output_section->vma
11957 + htab->glink->output_offset
11959 val -= (htab->glink_eh_frame->output_section->vma
11960 + htab->glink_eh_frame->output_offset);
11961 val -= p - htab->glink_eh_frame->contents;
11962 if (val + 0x80000000 > 0xffffffff)
11964 info->callbacks->einfo
11965 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11966 htab->glink->name);
11969 bfd_put_32 (htab->elf.dynobj, val, p);
11972 bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
11974 /* Augmentation. */
11977 *p++ = DW_CFA_advance_loc + 1;
11978 *p++ = DW_CFA_register;
11981 *p++ = DW_CFA_advance_loc + 4;
11982 *p++ = DW_CFA_restore_extended;
11985 htab->glink_eh_frame->size = p - htab->glink_eh_frame->contents;
11988 /* Build the stubs as directed by the stub hash table. */
11989 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
11991 if (htab->relbrlt != NULL)
11992 htab->relbrlt->reloc_count = 0;
11994 if (htab->plt_stub_align != 0)
11995 for (stub_sec = htab->stub_bfd->sections;
11997 stub_sec = stub_sec->next)
11998 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11999 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12000 & (-1 << htab->plt_stub_align));
12002 for (stub_sec = htab->stub_bfd->sections;
12004 stub_sec = stub_sec->next)
12005 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12007 stub_sec_count += 1;
12008 if (stub_sec->rawsize != stub_sec->size)
12012 if (stub_sec != NULL
12013 || htab->glink->rawsize != htab->glink->size
12014 || (htab->glink_eh_frame != NULL
12015 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12017 htab->stub_error = TRUE;
12018 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12021 if (htab->stub_error)
12026 *stats = bfd_malloc (500);
12027 if (*stats == NULL)
12030 sprintf (*stats, _("linker stubs in %u group%s\n"
12032 " toc adjust %lu\n"
12033 " long branch %lu\n"
12034 " long toc adj %lu\n"
12036 " plt call toc %lu"),
12038 stub_sec_count == 1 ? "" : "s",
12039 htab->stub_count[ppc_stub_long_branch - 1],
12040 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12041 htab->stub_count[ppc_stub_plt_branch - 1],
12042 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12043 htab->stub_count[ppc_stub_plt_call - 1],
12044 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12049 /* This function undoes the changes made by add_symbol_adjust. */
12052 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12054 struct ppc_link_hash_entry *eh;
12056 if (h->root.type == bfd_link_hash_indirect)
12059 eh = (struct ppc_link_hash_entry *) h;
12060 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12063 eh->elf.root.type = bfd_link_hash_undefined;
12068 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12070 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12073 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12076 /* What to do when ld finds relocations against symbols defined in
12077 discarded sections. */
12079 static unsigned int
12080 ppc64_elf_action_discarded (asection *sec)
12082 if (strcmp (".opd", sec->name) == 0)
12085 if (strcmp (".toc", sec->name) == 0)
12088 if (strcmp (".toc1", sec->name) == 0)
12091 return _bfd_elf_default_action_discarded (sec);
12094 /* The RELOCATE_SECTION function is called by the ELF backend linker
12095 to handle the relocations for a section.
12097 The relocs are always passed as Rela structures; if the section
12098 actually uses Rel structures, the r_addend field will always be
12101 This function is responsible for adjust the section contents as
12102 necessary, and (if using Rela relocs and generating a
12103 relocatable output file) adjusting the reloc addend as
12106 This function does not have to worry about setting the reloc
12107 address or the reloc symbol index.
12109 LOCAL_SYMS is a pointer to the swapped in local symbols.
12111 LOCAL_SECTIONS is an array giving the section in the input file
12112 corresponding to the st_shndx field of each local symbol.
12114 The global hash table entry for the global symbols can be found
12115 via elf_sym_hashes (input_bfd).
12117 When generating relocatable output, this function must handle
12118 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12119 going to be the section symbol corresponding to the output
12120 section, which means that the addend must be adjusted
12124 ppc64_elf_relocate_section (bfd *output_bfd,
12125 struct bfd_link_info *info,
12127 asection *input_section,
12128 bfd_byte *contents,
12129 Elf_Internal_Rela *relocs,
12130 Elf_Internal_Sym *local_syms,
12131 asection **local_sections)
12133 struct ppc_link_hash_table *htab;
12134 Elf_Internal_Shdr *symtab_hdr;
12135 struct elf_link_hash_entry **sym_hashes;
12136 Elf_Internal_Rela *rel;
12137 Elf_Internal_Rela *relend;
12138 Elf_Internal_Rela outrel;
12140 struct got_entry **local_got_ents;
12142 bfd_boolean ret = TRUE;
12143 bfd_boolean is_opd;
12144 /* Assume 'at' branch hints. */
12145 bfd_boolean is_isa_v2 = TRUE;
12146 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12148 /* Initialize howto table if needed. */
12149 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12152 htab = ppc_hash_table (info);
12156 /* Don't relocate stub sections. */
12157 if (input_section->owner == htab->stub_bfd)
12160 BFD_ASSERT (is_ppc64_elf (input_bfd));
12162 local_got_ents = elf_local_got_ents (input_bfd);
12163 TOCstart = elf_gp (output_bfd);
12164 symtab_hdr = &elf_symtab_hdr (input_bfd);
12165 sym_hashes = elf_sym_hashes (input_bfd);
12166 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12169 relend = relocs + input_section->reloc_count;
12170 for (; rel < relend; rel++)
12172 enum elf_ppc64_reloc_type r_type;
12173 bfd_vma addend, orig_addend;
12174 bfd_reloc_status_type r;
12175 Elf_Internal_Sym *sym;
12177 struct elf_link_hash_entry *h_elf;
12178 struct ppc_link_hash_entry *h;
12179 struct ppc_link_hash_entry *fdh;
12180 const char *sym_name;
12181 unsigned long r_symndx, toc_symndx;
12182 bfd_vma toc_addend;
12183 unsigned char tls_mask, tls_gd, tls_type;
12184 unsigned char sym_type;
12185 bfd_vma relocation;
12186 bfd_boolean unresolved_reloc;
12187 bfd_boolean warned;
12190 struct ppc_stub_hash_entry *stub_entry;
12191 bfd_vma max_br_offset;
12194 r_type = ELF64_R_TYPE (rel->r_info);
12195 r_symndx = ELF64_R_SYM (rel->r_info);
12197 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12198 symbol of the previous ADDR64 reloc. The symbol gives us the
12199 proper TOC base to use. */
12200 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12202 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12204 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12210 unresolved_reloc = FALSE;
12212 orig_addend = rel->r_addend;
12214 if (r_symndx < symtab_hdr->sh_info)
12216 /* It's a local symbol. */
12217 struct _opd_sec_data *opd;
12219 sym = local_syms + r_symndx;
12220 sec = local_sections[r_symndx];
12221 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12222 sym_type = ELF64_ST_TYPE (sym->st_info);
12223 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12224 opd = get_opd_info (sec);
12225 if (opd != NULL && opd->adjust != NULL)
12227 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12232 /* If this is a relocation against the opd section sym
12233 and we have edited .opd, adjust the reloc addend so
12234 that ld -r and ld --emit-relocs output is correct.
12235 If it is a reloc against some other .opd symbol,
12236 then the symbol value will be adjusted later. */
12237 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12238 rel->r_addend += adjust;
12240 relocation += adjust;
12246 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12247 r_symndx, symtab_hdr, sym_hashes,
12248 h_elf, sec, relocation,
12249 unresolved_reloc, warned);
12250 sym_name = h_elf->root.root.string;
12251 sym_type = h_elf->type;
12253 h = (struct ppc_link_hash_entry *) h_elf;
12255 if (sec != NULL && elf_discarded_section (sec))
12256 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
12258 ppc64_elf_howto_table[r_type],
12261 if (info->relocatable)
12264 /* TLS optimizations. Replace instruction sequences and relocs
12265 based on information we collected in tls_optimize. We edit
12266 RELOCS so that --emit-relocs will output something sensible
12267 for the final instruction stream. */
12272 tls_mask = h->tls_mask;
12273 else if (local_got_ents != NULL)
12275 struct plt_entry **local_plt = (struct plt_entry **)
12276 (local_got_ents + symtab_hdr->sh_info);
12277 unsigned char *lgot_masks = (unsigned char *)
12278 (local_plt + symtab_hdr->sh_info);
12279 tls_mask = lgot_masks[r_symndx];
12282 && (r_type == R_PPC64_TLS
12283 || r_type == R_PPC64_TLSGD
12284 || r_type == R_PPC64_TLSLD))
12286 /* Check for toc tls entries. */
12287 unsigned char *toc_tls;
12289 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12290 &local_syms, rel, input_bfd))
12294 tls_mask = *toc_tls;
12297 /* Check that tls relocs are used with tls syms, and non-tls
12298 relocs are used with non-tls syms. */
12299 if (r_symndx != STN_UNDEF
12300 && r_type != R_PPC64_NONE
12302 || h->elf.root.type == bfd_link_hash_defined
12303 || h->elf.root.type == bfd_link_hash_defweak)
12304 && (IS_PPC64_TLS_RELOC (r_type)
12305 != (sym_type == STT_TLS
12306 || (sym_type == STT_SECTION
12307 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
12310 && (r_type == R_PPC64_TLS
12311 || r_type == R_PPC64_TLSGD
12312 || r_type == R_PPC64_TLSLD))
12313 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12316 info->callbacks->einfo
12317 (!IS_PPC64_TLS_RELOC (r_type)
12318 ? _("%P: %H: %s used with TLS symbol %s\n")
12319 : _("%P: %H: %s used with non-TLS symbol %s\n"),
12320 input_bfd, input_section, rel->r_offset,
12321 ppc64_elf_howto_table[r_type]->name,
12325 /* Ensure reloc mapping code below stays sane. */
12326 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
12327 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
12328 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
12329 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
12330 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
12331 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
12332 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
12333 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
12334 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
12335 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
12343 case R_PPC64_LO_DS_OPT:
12344 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12345 if ((insn & (0x3f << 26)) != 58u << 26)
12347 insn += (14u << 26) - (58u << 26);
12348 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12349 r_type = R_PPC64_TOC16_LO;
12350 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12353 case R_PPC64_TOC16:
12354 case R_PPC64_TOC16_LO:
12355 case R_PPC64_TOC16_DS:
12356 case R_PPC64_TOC16_LO_DS:
12358 /* Check for toc tls entries. */
12359 unsigned char *toc_tls;
12362 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12363 &local_syms, rel, input_bfd);
12369 tls_mask = *toc_tls;
12370 if (r_type == R_PPC64_TOC16_DS
12371 || r_type == R_PPC64_TOC16_LO_DS)
12374 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
12379 /* If we found a GD reloc pair, then we might be
12380 doing a GD->IE transition. */
12383 tls_gd = TLS_TPRELGD;
12384 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12387 else if (retval == 3)
12389 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12397 case R_PPC64_GOT_TPREL16_HI:
12398 case R_PPC64_GOT_TPREL16_HA:
12400 && (tls_mask & TLS_TPREL) == 0)
12402 rel->r_offset -= d_offset;
12403 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12404 r_type = R_PPC64_NONE;
12405 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12409 case R_PPC64_GOT_TPREL16_DS:
12410 case R_PPC64_GOT_TPREL16_LO_DS:
12412 && (tls_mask & TLS_TPREL) == 0)
12415 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12417 insn |= 0x3c0d0000; /* addis 0,13,0 */
12418 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12419 r_type = R_PPC64_TPREL16_HA;
12420 if (toc_symndx != 0)
12422 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12423 rel->r_addend = toc_addend;
12424 /* We changed the symbol. Start over in order to
12425 get h, sym, sec etc. right. */
12430 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12436 && (tls_mask & TLS_TPREL) == 0)
12438 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
12439 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
12442 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12443 /* Was PPC64_TLS which sits on insn boundary, now
12444 PPC64_TPREL16_LO which is at low-order half-word. */
12445 rel->r_offset += d_offset;
12446 r_type = R_PPC64_TPREL16_LO;
12447 if (toc_symndx != 0)
12449 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12450 rel->r_addend = toc_addend;
12451 /* We changed the symbol. Start over in order to
12452 get h, sym, sec etc. right. */
12457 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12461 case R_PPC64_GOT_TLSGD16_HI:
12462 case R_PPC64_GOT_TLSGD16_HA:
12463 tls_gd = TLS_TPRELGD;
12464 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12468 case R_PPC64_GOT_TLSLD16_HI:
12469 case R_PPC64_GOT_TLSLD16_HA:
12470 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12473 if ((tls_mask & tls_gd) != 0)
12474 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12475 + R_PPC64_GOT_TPREL16_DS);
12478 rel->r_offset -= d_offset;
12479 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12480 r_type = R_PPC64_NONE;
12482 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12486 case R_PPC64_GOT_TLSGD16:
12487 case R_PPC64_GOT_TLSGD16_LO:
12488 tls_gd = TLS_TPRELGD;
12489 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12493 case R_PPC64_GOT_TLSLD16:
12494 case R_PPC64_GOT_TLSLD16_LO:
12495 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12497 unsigned int insn1, insn2, insn3;
12501 offset = (bfd_vma) -1;
12502 /* If not using the newer R_PPC64_TLSGD/LD to mark
12503 __tls_get_addr calls, we must trust that the call
12504 stays with its arg setup insns, ie. that the next
12505 reloc is the __tls_get_addr call associated with
12506 the current reloc. Edit both insns. */
12507 if (input_section->has_tls_get_addr_call
12508 && rel + 1 < relend
12509 && branch_reloc_hash_match (input_bfd, rel + 1,
12510 htab->tls_get_addr,
12511 htab->tls_get_addr_fd))
12512 offset = rel[1].r_offset;
12513 if ((tls_mask & tls_gd) != 0)
12516 insn1 = bfd_get_32 (output_bfd,
12517 contents + rel->r_offset - d_offset);
12518 insn1 &= (1 << 26) - (1 << 2);
12519 insn1 |= 58 << 26; /* ld */
12520 insn2 = 0x7c636a14; /* add 3,3,13 */
12521 if (offset != (bfd_vma) -1)
12522 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12523 if ((tls_mask & TLS_EXPLICIT) == 0)
12524 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12525 + R_PPC64_GOT_TPREL16_DS);
12527 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12528 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12533 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12534 insn2 = 0x38630000; /* addi 3,3,0 */
12537 /* Was an LD reloc. */
12539 sec = local_sections[toc_symndx];
12541 r_symndx < symtab_hdr->sh_info;
12543 if (local_sections[r_symndx] == sec)
12545 if (r_symndx >= symtab_hdr->sh_info)
12546 r_symndx = STN_UNDEF;
12547 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12548 if (r_symndx != STN_UNDEF)
12549 rel->r_addend -= (local_syms[r_symndx].st_value
12550 + sec->output_offset
12551 + sec->output_section->vma);
12553 else if (toc_symndx != 0)
12555 r_symndx = toc_symndx;
12556 rel->r_addend = toc_addend;
12558 r_type = R_PPC64_TPREL16_HA;
12559 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12560 if (offset != (bfd_vma) -1)
12562 rel[1].r_info = ELF64_R_INFO (r_symndx,
12563 R_PPC64_TPREL16_LO);
12564 rel[1].r_offset = offset + d_offset;
12565 rel[1].r_addend = rel->r_addend;
12568 bfd_put_32 (output_bfd, insn1,
12569 contents + rel->r_offset - d_offset);
12570 if (offset != (bfd_vma) -1)
12572 insn3 = bfd_get_32 (output_bfd,
12573 contents + offset + 4);
12575 || insn3 == CROR_151515 || insn3 == CROR_313131)
12577 rel[1].r_offset += 4;
12578 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12581 bfd_put_32 (output_bfd, insn2, contents + offset);
12583 if ((tls_mask & tls_gd) == 0
12584 && (tls_gd == 0 || toc_symndx != 0))
12586 /* We changed the symbol. Start over in order
12587 to get h, sym, sec etc. right. */
12594 case R_PPC64_TLSGD:
12595 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12597 unsigned int insn2, insn3;
12598 bfd_vma offset = rel->r_offset;
12600 if ((tls_mask & TLS_TPRELGD) != 0)
12603 r_type = R_PPC64_NONE;
12604 insn2 = 0x7c636a14; /* add 3,3,13 */
12609 if (toc_symndx != 0)
12611 r_symndx = toc_symndx;
12612 rel->r_addend = toc_addend;
12614 r_type = R_PPC64_TPREL16_LO;
12615 rel->r_offset = offset + d_offset;
12616 insn2 = 0x38630000; /* addi 3,3,0 */
12618 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12619 /* Zap the reloc on the _tls_get_addr call too. */
12620 BFD_ASSERT (offset == rel[1].r_offset);
12621 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12622 insn3 = bfd_get_32 (output_bfd,
12623 contents + offset + 4);
12625 || insn3 == CROR_151515 || insn3 == CROR_313131)
12627 rel->r_offset += 4;
12628 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12631 bfd_put_32 (output_bfd, insn2, contents + offset);
12632 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12640 case R_PPC64_TLSLD:
12641 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12643 unsigned int insn2, insn3;
12644 bfd_vma offset = rel->r_offset;
12647 sec = local_sections[toc_symndx];
12649 r_symndx < symtab_hdr->sh_info;
12651 if (local_sections[r_symndx] == sec)
12653 if (r_symndx >= symtab_hdr->sh_info)
12654 r_symndx = STN_UNDEF;
12655 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12656 if (r_symndx != STN_UNDEF)
12657 rel->r_addend -= (local_syms[r_symndx].st_value
12658 + sec->output_offset
12659 + sec->output_section->vma);
12661 r_type = R_PPC64_TPREL16_LO;
12662 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12663 rel->r_offset = offset + d_offset;
12664 /* Zap the reloc on the _tls_get_addr call too. */
12665 BFD_ASSERT (offset == rel[1].r_offset);
12666 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12667 insn2 = 0x38630000; /* addi 3,3,0 */
12668 insn3 = bfd_get_32 (output_bfd,
12669 contents + offset + 4);
12671 || insn3 == CROR_151515 || insn3 == CROR_313131)
12673 rel->r_offset += 4;
12674 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12677 bfd_put_32 (output_bfd, insn2, contents + offset);
12683 case R_PPC64_DTPMOD64:
12684 if (rel + 1 < relend
12685 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12686 && rel[1].r_offset == rel->r_offset + 8)
12688 if ((tls_mask & TLS_GD) == 0)
12690 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12691 if ((tls_mask & TLS_TPRELGD) != 0)
12692 r_type = R_PPC64_TPREL64;
12695 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12696 r_type = R_PPC64_NONE;
12698 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12703 if ((tls_mask & TLS_LD) == 0)
12705 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12706 r_type = R_PPC64_NONE;
12707 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12712 case R_PPC64_TPREL64:
12713 if ((tls_mask & TLS_TPREL) == 0)
12715 r_type = R_PPC64_NONE;
12716 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12721 /* Handle other relocations that tweak non-addend part of insn. */
12723 max_br_offset = 1 << 25;
12724 addend = rel->r_addend;
12730 case R_PPC64_TOCSAVE:
12731 if (relocation + addend == (rel->r_offset
12732 + input_section->output_offset
12733 + input_section->output_section->vma)
12734 && tocsave_find (htab, NO_INSERT,
12735 &local_syms, rel, input_bfd))
12737 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
12739 || insn == CROR_151515 || insn == CROR_313131)
12740 bfd_put_32 (input_bfd, STD_R2_40R1,
12741 contents + rel->r_offset);
12745 /* Branch taken prediction relocations. */
12746 case R_PPC64_ADDR14_BRTAKEN:
12747 case R_PPC64_REL14_BRTAKEN:
12748 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12751 /* Branch not taken prediction relocations. */
12752 case R_PPC64_ADDR14_BRNTAKEN:
12753 case R_PPC64_REL14_BRNTAKEN:
12754 insn |= bfd_get_32 (output_bfd,
12755 contents + rel->r_offset) & ~(0x01 << 21);
12758 case R_PPC64_REL14:
12759 max_br_offset = 1 << 15;
12762 case R_PPC64_REL24:
12763 /* Calls to functions with a different TOC, such as calls to
12764 shared objects, need to alter the TOC pointer. This is
12765 done using a linkage stub. A REL24 branching to these
12766 linkage stubs needs to be followed by a nop, as the nop
12767 will be replaced with an instruction to restore the TOC
12772 && h->oh->is_func_descriptor)
12773 fdh = ppc_follow_link (h->oh);
12774 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12775 if (stub_entry != NULL
12776 && (stub_entry->stub_type == ppc_stub_plt_call
12777 || stub_entry->stub_type == ppc_stub_plt_call_r2save
12778 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12779 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
12781 bfd_boolean can_plt_call = FALSE;
12783 if (rel->r_offset + 8 <= input_section->size)
12786 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12788 || nop == CROR_151515 || nop == CROR_313131)
12791 && (h == htab->tls_get_addr_fd
12792 || h == htab->tls_get_addr)
12793 && !htab->no_tls_get_addr_opt)
12795 /* Special stub used, leave nop alone. */
12798 bfd_put_32 (input_bfd, LD_R2_40R1,
12799 contents + rel->r_offset + 4);
12800 can_plt_call = TRUE;
12806 if (stub_entry->stub_type == ppc_stub_plt_call
12807 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12809 /* If this is a plain branch rather than a branch
12810 and link, don't require a nop. However, don't
12811 allow tail calls in a shared library as they
12812 will result in r2 being corrupted. */
12814 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
12815 if (info->executable && (br & 1) == 0)
12816 can_plt_call = TRUE;
12821 && strcmp (h->elf.root.root.string,
12822 ".__libc_start_main") == 0)
12824 /* Allow crt1 branch to go via a toc adjusting stub. */
12825 can_plt_call = TRUE;
12829 if (strcmp (input_section->output_section->name,
12831 || strcmp (input_section->output_section->name,
12833 info->callbacks->einfo
12834 (_("%P: %H: automatic multiple TOCs "
12835 "not supported using your crt files; "
12836 "recompile with -mminimal-toc or upgrade gcc\n"),
12837 input_bfd, input_section, rel->r_offset);
12839 info->callbacks->einfo
12840 (_("%P: %H: sibling call optimization to `%s' "
12841 "does not allow automatic multiple TOCs; "
12842 "recompile with -mminimal-toc or "
12843 "-fno-optimize-sibling-calls, "
12844 "or make `%s' extern\n"),
12845 input_bfd, input_section, rel->r_offset,
12848 bfd_set_error (bfd_error_bad_value);
12854 && (stub_entry->stub_type == ppc_stub_plt_call
12855 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
12856 unresolved_reloc = FALSE;
12859 if ((stub_entry == NULL
12860 || stub_entry->stub_type == ppc_stub_long_branch
12861 || stub_entry->stub_type == ppc_stub_plt_branch)
12862 && get_opd_info (sec) != NULL)
12864 /* The branch destination is the value of the opd entry. */
12865 bfd_vma off = (relocation + addend
12866 - sec->output_section->vma
12867 - sec->output_offset);
12868 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
12869 if (dest != (bfd_vma) -1)
12876 /* If the branch is out of reach we ought to have a long
12878 from = (rel->r_offset
12879 + input_section->output_offset
12880 + input_section->output_section->vma);
12882 if (stub_entry != NULL
12883 && (stub_entry->stub_type == ppc_stub_long_branch
12884 || stub_entry->stub_type == ppc_stub_plt_branch)
12885 && (r_type == R_PPC64_ADDR14_BRTAKEN
12886 || r_type == R_PPC64_ADDR14_BRNTAKEN
12887 || (relocation + addend - from + max_br_offset
12888 < 2 * max_br_offset)))
12889 /* Don't use the stub if this branch is in range. */
12892 if (stub_entry != NULL)
12894 /* Munge up the value and addend so that we call the stub
12895 rather than the procedure directly. */
12896 relocation = (stub_entry->stub_offset
12897 + stub_entry->stub_sec->output_offset
12898 + stub_entry->stub_sec->output_section->vma);
12901 if ((stub_entry->stub_type == ppc_stub_plt_call
12902 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12903 && (ALWAYS_EMIT_R2SAVE
12904 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12905 && rel + 1 < relend
12906 && rel[1].r_offset == rel->r_offset + 4
12907 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
12915 /* Set 'a' bit. This is 0b00010 in BO field for branch
12916 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12917 for branch on CTR insns (BO == 1a00t or 1a01t). */
12918 if ((insn & (0x14 << 21)) == (0x04 << 21))
12919 insn |= 0x02 << 21;
12920 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12921 insn |= 0x08 << 21;
12927 /* Invert 'y' bit if not the default. */
12928 if ((bfd_signed_vma) (relocation + addend - from) < 0)
12929 insn ^= 0x01 << 21;
12932 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12935 /* NOP out calls to undefined weak functions.
12936 We can thus call a weak function without first
12937 checking whether the function is defined. */
12939 && h->elf.root.type == bfd_link_hash_undefweak
12940 && h->elf.dynindx == -1
12941 && r_type == R_PPC64_REL24
12945 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12951 /* Set `addend'. */
12956 info->callbacks->einfo
12957 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
12958 input_bfd, (int) r_type, sym_name);
12960 bfd_set_error (bfd_error_bad_value);
12966 case R_PPC64_TLSGD:
12967 case R_PPC64_TLSLD:
12968 case R_PPC64_TOCSAVE:
12969 case R_PPC64_GNU_VTINHERIT:
12970 case R_PPC64_GNU_VTENTRY:
12973 /* GOT16 relocations. Like an ADDR16 using the symbol's
12974 address in the GOT as relocation value instead of the
12975 symbol's value itself. Also, create a GOT entry for the
12976 symbol and put the symbol value there. */
12977 case R_PPC64_GOT_TLSGD16:
12978 case R_PPC64_GOT_TLSGD16_LO:
12979 case R_PPC64_GOT_TLSGD16_HI:
12980 case R_PPC64_GOT_TLSGD16_HA:
12981 tls_type = TLS_TLS | TLS_GD;
12984 case R_PPC64_GOT_TLSLD16:
12985 case R_PPC64_GOT_TLSLD16_LO:
12986 case R_PPC64_GOT_TLSLD16_HI:
12987 case R_PPC64_GOT_TLSLD16_HA:
12988 tls_type = TLS_TLS | TLS_LD;
12991 case R_PPC64_GOT_TPREL16_DS:
12992 case R_PPC64_GOT_TPREL16_LO_DS:
12993 case R_PPC64_GOT_TPREL16_HI:
12994 case R_PPC64_GOT_TPREL16_HA:
12995 tls_type = TLS_TLS | TLS_TPREL;
12998 case R_PPC64_GOT_DTPREL16_DS:
12999 case R_PPC64_GOT_DTPREL16_LO_DS:
13000 case R_PPC64_GOT_DTPREL16_HI:
13001 case R_PPC64_GOT_DTPREL16_HA:
13002 tls_type = TLS_TLS | TLS_DTPREL;
13005 case R_PPC64_GOT16:
13006 case R_PPC64_GOT16_LO:
13007 case R_PPC64_GOT16_HI:
13008 case R_PPC64_GOT16_HA:
13009 case R_PPC64_GOT16_DS:
13010 case R_PPC64_GOT16_LO_DS:
13013 /* Relocation is to the entry for this symbol in the global
13018 unsigned long indx = 0;
13019 struct got_entry *ent;
13021 if (tls_type == (TLS_TLS | TLS_LD)
13023 || !h->elf.def_dynamic))
13024 ent = ppc64_tlsld_got (input_bfd);
13030 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13031 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13034 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13035 /* This is actually a static link, or it is a
13036 -Bsymbolic link and the symbol is defined
13037 locally, or the symbol was forced to be local
13038 because of a version file. */
13042 indx = h->elf.dynindx;
13043 unresolved_reloc = FALSE;
13045 ent = h->elf.got.glist;
13049 if (local_got_ents == NULL)
13051 ent = local_got_ents[r_symndx];
13054 for (; ent != NULL; ent = ent->next)
13055 if (ent->addend == orig_addend
13056 && ent->owner == input_bfd
13057 && ent->tls_type == tls_type)
13063 if (ent->is_indirect)
13064 ent = ent->got.ent;
13065 offp = &ent->got.offset;
13066 got = ppc64_elf_tdata (ent->owner)->got;
13070 /* The offset must always be a multiple of 8. We use the
13071 least significant bit to record whether we have already
13072 processed this entry. */
13074 if ((off & 1) != 0)
13078 /* Generate relocs for the dynamic linker, except in
13079 the case of TLSLD where we'll use one entry per
13087 ? h->elf.type == STT_GNU_IFUNC
13088 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13089 if ((info->shared || indx != 0)
13091 || (tls_type == (TLS_TLS | TLS_LD)
13092 && !h->elf.def_dynamic)
13093 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13094 || h->elf.root.type != bfd_link_hash_undefweak))
13095 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13097 relgot = htab->reliplt;
13098 if (relgot != NULL)
13100 outrel.r_offset = (got->output_section->vma
13101 + got->output_offset
13103 outrel.r_addend = addend;
13104 if (tls_type & (TLS_LD | TLS_GD))
13106 outrel.r_addend = 0;
13107 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13108 if (tls_type == (TLS_TLS | TLS_GD))
13110 loc = relgot->contents;
13111 loc += (relgot->reloc_count++
13112 * sizeof (Elf64_External_Rela));
13113 bfd_elf64_swap_reloca_out (output_bfd,
13115 outrel.r_offset += 8;
13116 outrel.r_addend = addend;
13118 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13121 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13122 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13123 else if (tls_type == (TLS_TLS | TLS_TPREL))
13124 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13125 else if (indx != 0)
13126 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13130 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13132 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13134 /* Write the .got section contents for the sake
13136 loc = got->contents + off;
13137 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13141 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13143 outrel.r_addend += relocation;
13144 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13145 outrel.r_addend -= htab->elf.tls_sec->vma;
13147 loc = relgot->contents;
13148 loc += (relgot->reloc_count++
13149 * sizeof (Elf64_External_Rela));
13150 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13153 /* Init the .got section contents here if we're not
13154 emitting a reloc. */
13157 relocation += addend;
13158 if (tls_type == (TLS_TLS | TLS_LD))
13160 else if (tls_type != 0)
13162 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13163 if (tls_type == (TLS_TLS | TLS_TPREL))
13164 relocation += DTP_OFFSET - TP_OFFSET;
13166 if (tls_type == (TLS_TLS | TLS_GD))
13168 bfd_put_64 (output_bfd, relocation,
13169 got->contents + off + 8);
13174 bfd_put_64 (output_bfd, relocation,
13175 got->contents + off);
13179 if (off >= (bfd_vma) -2)
13182 relocation = got->output_section->vma + got->output_offset + off;
13183 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
13187 case R_PPC64_PLT16_HA:
13188 case R_PPC64_PLT16_HI:
13189 case R_PPC64_PLT16_LO:
13190 case R_PPC64_PLT32:
13191 case R_PPC64_PLT64:
13192 /* Relocation is to the entry for this symbol in the
13193 procedure linkage table. */
13195 /* Resolve a PLT reloc against a local symbol directly,
13196 without using the procedure linkage table. */
13200 /* It's possible that we didn't make a PLT entry for this
13201 symbol. This happens when statically linking PIC code,
13202 or when using -Bsymbolic. Go find a match if there is a
13204 if (htab->plt != NULL)
13206 struct plt_entry *ent;
13207 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
13208 if (ent->addend == orig_addend
13209 && ent->plt.offset != (bfd_vma) -1)
13211 relocation = (htab->plt->output_section->vma
13212 + htab->plt->output_offset
13213 + ent->plt.offset);
13214 unresolved_reloc = FALSE;
13220 /* Relocation value is TOC base. */
13221 relocation = TOCstart;
13222 if (r_symndx == STN_UNDEF)
13223 relocation += htab->stub_group[input_section->id].toc_off;
13224 else if (unresolved_reloc)
13226 else if (sec != NULL && sec->id <= htab->top_id)
13227 relocation += htab->stub_group[sec->id].toc_off;
13229 unresolved_reloc = TRUE;
13232 /* TOC16 relocs. We want the offset relative to the TOC base,
13233 which is the address of the start of the TOC plus 0x8000.
13234 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13236 case R_PPC64_TOC16:
13237 case R_PPC64_TOC16_LO:
13238 case R_PPC64_TOC16_HI:
13239 case R_PPC64_TOC16_DS:
13240 case R_PPC64_TOC16_LO_DS:
13241 case R_PPC64_TOC16_HA:
13242 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
13245 /* Relocate against the beginning of the section. */
13246 case R_PPC64_SECTOFF:
13247 case R_PPC64_SECTOFF_LO:
13248 case R_PPC64_SECTOFF_HI:
13249 case R_PPC64_SECTOFF_DS:
13250 case R_PPC64_SECTOFF_LO_DS:
13251 case R_PPC64_SECTOFF_HA:
13253 addend -= sec->output_section->vma;
13256 case R_PPC64_REL16:
13257 case R_PPC64_REL16_LO:
13258 case R_PPC64_REL16_HI:
13259 case R_PPC64_REL16_HA:
13262 case R_PPC64_REL14:
13263 case R_PPC64_REL14_BRNTAKEN:
13264 case R_PPC64_REL14_BRTAKEN:
13265 case R_PPC64_REL24:
13268 case R_PPC64_TPREL16:
13269 case R_PPC64_TPREL16_LO:
13270 case R_PPC64_TPREL16_HI:
13271 case R_PPC64_TPREL16_HA:
13272 case R_PPC64_TPREL16_DS:
13273 case R_PPC64_TPREL16_LO_DS:
13274 case R_PPC64_TPREL16_HIGHER:
13275 case R_PPC64_TPREL16_HIGHERA:
13276 case R_PPC64_TPREL16_HIGHEST:
13277 case R_PPC64_TPREL16_HIGHESTA:
13279 && h->elf.root.type == bfd_link_hash_undefweak
13280 && h->elf.dynindx == -1)
13282 /* Make this relocation against an undefined weak symbol
13283 resolve to zero. This is really just a tweak, since
13284 code using weak externs ought to check that they are
13285 defined before using them. */
13286 bfd_byte *p = contents + rel->r_offset - d_offset;
13288 insn = bfd_get_32 (output_bfd, p);
13289 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
13291 bfd_put_32 (output_bfd, insn, p);
13294 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13296 /* The TPREL16 relocs shouldn't really be used in shared
13297 libs as they will result in DT_TEXTREL being set, but
13298 support them anyway. */
13302 case R_PPC64_DTPREL16:
13303 case R_PPC64_DTPREL16_LO:
13304 case R_PPC64_DTPREL16_HI:
13305 case R_PPC64_DTPREL16_HA:
13306 case R_PPC64_DTPREL16_DS:
13307 case R_PPC64_DTPREL16_LO_DS:
13308 case R_PPC64_DTPREL16_HIGHER:
13309 case R_PPC64_DTPREL16_HIGHERA:
13310 case R_PPC64_DTPREL16_HIGHEST:
13311 case R_PPC64_DTPREL16_HIGHESTA:
13312 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13315 case R_PPC64_DTPMOD64:
13320 case R_PPC64_TPREL64:
13321 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13324 case R_PPC64_DTPREL64:
13325 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13328 /* Relocations that may need to be propagated if this is a
13330 case R_PPC64_REL30:
13331 case R_PPC64_REL32:
13332 case R_PPC64_REL64:
13333 case R_PPC64_ADDR14:
13334 case R_PPC64_ADDR14_BRNTAKEN:
13335 case R_PPC64_ADDR14_BRTAKEN:
13336 case R_PPC64_ADDR16:
13337 case R_PPC64_ADDR16_DS:
13338 case R_PPC64_ADDR16_HA:
13339 case R_PPC64_ADDR16_HI:
13340 case R_PPC64_ADDR16_HIGHER:
13341 case R_PPC64_ADDR16_HIGHERA:
13342 case R_PPC64_ADDR16_HIGHEST:
13343 case R_PPC64_ADDR16_HIGHESTA:
13344 case R_PPC64_ADDR16_LO:
13345 case R_PPC64_ADDR16_LO_DS:
13346 case R_PPC64_ADDR24:
13347 case R_PPC64_ADDR32:
13348 case R_PPC64_ADDR64:
13349 case R_PPC64_UADDR16:
13350 case R_PPC64_UADDR32:
13351 case R_PPC64_UADDR64:
13353 if ((input_section->flags & SEC_ALLOC) == 0)
13356 if (NO_OPD_RELOCS && is_opd)
13361 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13362 || h->elf.root.type != bfd_link_hash_undefweak)
13363 && (must_be_dyn_reloc (info, r_type)
13364 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
13365 || (ELIMINATE_COPY_RELOCS
13368 && h->elf.dynindx != -1
13369 && !h->elf.non_got_ref
13370 && !h->elf.def_regular)
13373 ? h->elf.type == STT_GNU_IFUNC
13374 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
13376 bfd_boolean skip, relocate;
13380 /* When generating a dynamic object, these relocations
13381 are copied into the output file to be resolved at run
13387 out_off = _bfd_elf_section_offset (output_bfd, info,
13388 input_section, rel->r_offset);
13389 if (out_off == (bfd_vma) -1)
13391 else if (out_off == (bfd_vma) -2)
13392 skip = TRUE, relocate = TRUE;
13393 out_off += (input_section->output_section->vma
13394 + input_section->output_offset);
13395 outrel.r_offset = out_off;
13396 outrel.r_addend = rel->r_addend;
13398 /* Optimize unaligned reloc use. */
13399 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
13400 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
13401 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
13402 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
13403 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
13404 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
13405 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
13406 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
13407 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
13410 memset (&outrel, 0, sizeof outrel);
13411 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
13413 && r_type != R_PPC64_TOC)
13414 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
13417 /* This symbol is local, or marked to become local,
13418 or this is an opd section reloc which must point
13419 at a local function. */
13420 outrel.r_addend += relocation;
13421 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
13423 if (is_opd && h != NULL)
13425 /* Lie about opd entries. This case occurs
13426 when building shared libraries and we
13427 reference a function in another shared
13428 lib. The same thing happens for a weak
13429 definition in an application that's
13430 overridden by a strong definition in a
13431 shared lib. (I believe this is a generic
13432 bug in binutils handling of weak syms.)
13433 In these cases we won't use the opd
13434 entry in this lib. */
13435 unresolved_reloc = FALSE;
13438 && r_type == R_PPC64_ADDR64
13440 ? h->elf.type == STT_GNU_IFUNC
13441 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
13442 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13445 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13447 /* We need to relocate .opd contents for ld.so.
13448 Prelink also wants simple and consistent rules
13449 for relocs. This make all RELATIVE relocs have
13450 *r_offset equal to r_addend. */
13459 ? h->elf.type == STT_GNU_IFUNC
13460 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13462 info->callbacks->einfo
13463 (_("%P: %H: relocation %s for indirect "
13464 "function %s unsupported\n"),
13465 input_bfd, input_section, rel->r_offset,
13466 ppc64_elf_howto_table[r_type]->name,
13470 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
13472 else if (sec == NULL || sec->owner == NULL)
13474 bfd_set_error (bfd_error_bad_value);
13481 osec = sec->output_section;
13482 indx = elf_section_data (osec)->dynindx;
13486 if ((osec->flags & SEC_READONLY) == 0
13487 && htab->elf.data_index_section != NULL)
13488 osec = htab->elf.data_index_section;
13490 osec = htab->elf.text_index_section;
13491 indx = elf_section_data (osec)->dynindx;
13493 BFD_ASSERT (indx != 0);
13495 /* We are turning this relocation into one
13496 against a section symbol, so subtract out
13497 the output section's address but not the
13498 offset of the input section in the output
13500 outrel.r_addend -= osec->vma;
13503 outrel.r_info = ELF64_R_INFO (indx, r_type);
13507 sreloc = elf_section_data (input_section)->sreloc;
13508 if (!htab->elf.dynamic_sections_created)
13509 sreloc = htab->reliplt;
13510 if (sreloc == NULL)
13513 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13516 loc = sreloc->contents;
13517 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13518 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13520 /* If this reloc is against an external symbol, it will
13521 be computed at runtime, so there's no need to do
13522 anything now. However, for the sake of prelink ensure
13523 that the section contents are a known value. */
13526 unresolved_reloc = FALSE;
13527 /* The value chosen here is quite arbitrary as ld.so
13528 ignores section contents except for the special
13529 case of .opd where the contents might be accessed
13530 before relocation. Choose zero, as that won't
13531 cause reloc overflow. */
13534 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13535 to improve backward compatibility with older
13537 if (r_type == R_PPC64_ADDR64)
13538 addend = outrel.r_addend;
13539 /* Adjust pc_relative relocs to have zero in *r_offset. */
13540 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13541 addend = (input_section->output_section->vma
13542 + input_section->output_offset
13549 case R_PPC64_GLOB_DAT:
13550 case R_PPC64_JMP_SLOT:
13551 case R_PPC64_JMP_IREL:
13552 case R_PPC64_RELATIVE:
13553 /* We shouldn't ever see these dynamic relocs in relocatable
13555 /* Fall through. */
13557 case R_PPC64_PLTGOT16:
13558 case R_PPC64_PLTGOT16_DS:
13559 case R_PPC64_PLTGOT16_HA:
13560 case R_PPC64_PLTGOT16_HI:
13561 case R_PPC64_PLTGOT16_LO:
13562 case R_PPC64_PLTGOT16_LO_DS:
13563 case R_PPC64_PLTREL32:
13564 case R_PPC64_PLTREL64:
13565 /* These ones haven't been implemented yet. */
13567 info->callbacks->einfo
13568 (_("%P: %B: relocation %s is not supported for symbol %s\n"),
13570 ppc64_elf_howto_table[r_type]->name, sym_name);
13572 bfd_set_error (bfd_error_invalid_operation);
13577 /* Multi-instruction sequences that access the TOC can be
13578 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13579 to nop; addi rb,r2,x; */
13585 case R_PPC64_GOT_TLSLD16_HI:
13586 case R_PPC64_GOT_TLSGD16_HI:
13587 case R_PPC64_GOT_TPREL16_HI:
13588 case R_PPC64_GOT_DTPREL16_HI:
13589 case R_PPC64_GOT16_HI:
13590 case R_PPC64_TOC16_HI:
13591 /* These relocs would only be useful if building up an
13592 offset to later add to r2, perhaps in an indexed
13593 addressing mode instruction. Don't try to optimize.
13594 Unfortunately, the possibility of someone building up an
13595 offset like this or even with the HA relocs, means that
13596 we need to check the high insn when optimizing the low
13600 case R_PPC64_GOT_TLSLD16_HA:
13601 case R_PPC64_GOT_TLSGD16_HA:
13602 case R_PPC64_GOT_TPREL16_HA:
13603 case R_PPC64_GOT_DTPREL16_HA:
13604 case R_PPC64_GOT16_HA:
13605 case R_PPC64_TOC16_HA:
13606 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13607 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13609 bfd_byte *p = contents + (rel->r_offset & ~3);
13610 bfd_put_32 (input_bfd, NOP, p);
13614 case R_PPC64_GOT_TLSLD16_LO:
13615 case R_PPC64_GOT_TLSGD16_LO:
13616 case R_PPC64_GOT_TPREL16_LO_DS:
13617 case R_PPC64_GOT_DTPREL16_LO_DS:
13618 case R_PPC64_GOT16_LO:
13619 case R_PPC64_GOT16_LO_DS:
13620 case R_PPC64_TOC16_LO:
13621 case R_PPC64_TOC16_LO_DS:
13622 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13623 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13625 bfd_byte *p = contents + (rel->r_offset & ~3);
13626 insn = bfd_get_32 (input_bfd, p);
13627 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
13629 /* Transform addic to addi when we change reg. */
13630 insn &= ~((0x3f << 26) | (0x1f << 16));
13631 insn |= (14u << 26) | (2 << 16);
13635 insn &= ~(0x1f << 16);
13638 bfd_put_32 (input_bfd, insn, p);
13643 /* Do any further special processing. */
13649 case R_PPC64_ADDR16_HA:
13650 case R_PPC64_REL16_HA:
13651 case R_PPC64_ADDR16_HIGHERA:
13652 case R_PPC64_ADDR16_HIGHESTA:
13653 case R_PPC64_TOC16_HA:
13654 case R_PPC64_SECTOFF_HA:
13655 case R_PPC64_TPREL16_HA:
13656 case R_PPC64_DTPREL16_HA:
13657 case R_PPC64_TPREL16_HIGHER:
13658 case R_PPC64_TPREL16_HIGHERA:
13659 case R_PPC64_TPREL16_HIGHEST:
13660 case R_PPC64_TPREL16_HIGHESTA:
13661 case R_PPC64_DTPREL16_HIGHER:
13662 case R_PPC64_DTPREL16_HIGHERA:
13663 case R_PPC64_DTPREL16_HIGHEST:
13664 case R_PPC64_DTPREL16_HIGHESTA:
13665 /* It's just possible that this symbol is a weak symbol
13666 that's not actually defined anywhere. In that case,
13667 'sec' would be NULL, and we should leave the symbol
13668 alone (it will be set to zero elsewhere in the link). */
13673 case R_PPC64_GOT16_HA:
13674 case R_PPC64_PLTGOT16_HA:
13675 case R_PPC64_PLT16_HA:
13676 case R_PPC64_GOT_TLSGD16_HA:
13677 case R_PPC64_GOT_TLSLD16_HA:
13678 case R_PPC64_GOT_TPREL16_HA:
13679 case R_PPC64_GOT_DTPREL16_HA:
13680 /* Add 0x10000 if sign bit in 0:15 is set.
13681 Bits 0:15 are not used. */
13685 case R_PPC64_ADDR16_DS:
13686 case R_PPC64_ADDR16_LO_DS:
13687 case R_PPC64_GOT16_DS:
13688 case R_PPC64_GOT16_LO_DS:
13689 case R_PPC64_PLT16_LO_DS:
13690 case R_PPC64_SECTOFF_DS:
13691 case R_PPC64_SECTOFF_LO_DS:
13692 case R_PPC64_TOC16_DS:
13693 case R_PPC64_TOC16_LO_DS:
13694 case R_PPC64_PLTGOT16_DS:
13695 case R_PPC64_PLTGOT16_LO_DS:
13696 case R_PPC64_GOT_TPREL16_DS:
13697 case R_PPC64_GOT_TPREL16_LO_DS:
13698 case R_PPC64_GOT_DTPREL16_DS:
13699 case R_PPC64_GOT_DTPREL16_LO_DS:
13700 case R_PPC64_TPREL16_DS:
13701 case R_PPC64_TPREL16_LO_DS:
13702 case R_PPC64_DTPREL16_DS:
13703 case R_PPC64_DTPREL16_LO_DS:
13704 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13706 /* If this reloc is against an lq insn, then the value must be
13707 a multiple of 16. This is somewhat of a hack, but the
13708 "correct" way to do this by defining _DQ forms of all the
13709 _DS relocs bloats all reloc switches in this file. It
13710 doesn't seem to make much sense to use any of these relocs
13711 in data, so testing the insn should be safe. */
13712 if ((insn & (0x3f << 26)) == (56u << 26))
13714 if (((relocation + addend) & mask) != 0)
13716 info->callbacks->einfo
13717 (_("%P: %H: error: %s not a multiple of %u\n"),
13718 input_bfd, input_section, rel->r_offset,
13719 ppc64_elf_howto_table[r_type]->name,
13721 bfd_set_error (bfd_error_bad_value);
13728 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13729 because such sections are not SEC_ALLOC and thus ld.so will
13730 not process them. */
13731 if (unresolved_reloc
13732 && !((input_section->flags & SEC_DEBUGGING) != 0
13733 && h->elf.def_dynamic)
13734 && _bfd_elf_section_offset (output_bfd, info, input_section,
13735 rel->r_offset) != (bfd_vma) -1)
13737 info->callbacks->einfo
13738 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
13739 input_bfd, input_section, rel->r_offset,
13740 ppc64_elf_howto_table[(int) r_type]->name,
13741 h->elf.root.root.string);
13745 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
13753 if (r != bfd_reloc_ok)
13755 if (sym_name == NULL)
13756 sym_name = "(null)";
13757 if (r == bfd_reloc_overflow)
13762 && h->elf.root.type == bfd_link_hash_undefweak
13763 && ppc64_elf_howto_table[r_type]->pc_relative)
13765 /* Assume this is a call protected by other code that
13766 detects the symbol is undefined. If this is the case,
13767 we can safely ignore the overflow. If not, the
13768 program is hosed anyway, and a little warning isn't
13774 if (!((*info->callbacks->reloc_overflow)
13775 (info, (h ? &h->elf.root : NULL), sym_name,
13776 ppc64_elf_howto_table[r_type]->name,
13777 orig_addend, input_bfd, input_section, rel->r_offset)))
13782 info->callbacks->einfo
13783 (_("%P: %H: %s reloc against `%s': error %d\n"),
13784 input_bfd, input_section, rel->r_offset,
13785 ppc64_elf_howto_table[r_type]->name,
13793 /* If we're emitting relocations, then shortly after this function
13794 returns, reloc offsets and addends for this section will be
13795 adjusted. Worse, reloc symbol indices will be for the output
13796 file rather than the input. Save a copy of the relocs for
13797 opd_entry_value. */
13798 if (is_opd && (info->emitrelocations || info->relocatable))
13801 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13802 rel = bfd_alloc (input_bfd, amt);
13803 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13804 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13807 memcpy (rel, relocs, amt);
13812 /* Adjust the value of any local symbols in opd sections. */
13815 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13816 const char *name ATTRIBUTE_UNUSED,
13817 Elf_Internal_Sym *elfsym,
13818 asection *input_sec,
13819 struct elf_link_hash_entry *h)
13821 struct _opd_sec_data *opd;
13828 opd = get_opd_info (input_sec);
13829 if (opd == NULL || opd->adjust == NULL)
13832 value = elfsym->st_value - input_sec->output_offset;
13833 if (!info->relocatable)
13834 value -= input_sec->output_section->vma;
13836 adjust = opd->adjust[value / 8];
13840 elfsym->st_value += adjust;
13844 /* Finish up dynamic symbol handling. We set the contents of various
13845 dynamic sections here. */
13848 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13849 struct bfd_link_info *info,
13850 struct elf_link_hash_entry *h,
13851 Elf_Internal_Sym *sym)
13853 struct ppc_link_hash_table *htab;
13854 struct plt_entry *ent;
13855 Elf_Internal_Rela rela;
13858 htab = ppc_hash_table (info);
13862 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13863 if (ent->plt.offset != (bfd_vma) -1)
13865 /* This symbol has an entry in the procedure linkage
13866 table. Set it up. */
13867 if (!htab->elf.dynamic_sections_created
13868 || h->dynindx == -1)
13870 BFD_ASSERT (h->type == STT_GNU_IFUNC
13872 && (h->root.type == bfd_link_hash_defined
13873 || h->root.type == bfd_link_hash_defweak));
13874 rela.r_offset = (htab->iplt->output_section->vma
13875 + htab->iplt->output_offset
13876 + ent->plt.offset);
13877 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13878 rela.r_addend = (h->root.u.def.value
13879 + h->root.u.def.section->output_offset
13880 + h->root.u.def.section->output_section->vma
13882 loc = (htab->reliplt->contents
13883 + (htab->reliplt->reloc_count++
13884 * sizeof (Elf64_External_Rela)));
13888 rela.r_offset = (htab->plt->output_section->vma
13889 + htab->plt->output_offset
13890 + ent->plt.offset);
13891 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13892 rela.r_addend = ent->addend;
13893 loc = (htab->relplt->contents
13894 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13895 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
13897 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13902 /* This symbol needs a copy reloc. Set it up. */
13904 if (h->dynindx == -1
13905 || (h->root.type != bfd_link_hash_defined
13906 && h->root.type != bfd_link_hash_defweak)
13907 || htab->relbss == NULL)
13910 rela.r_offset = (h->root.u.def.value
13911 + h->root.u.def.section->output_section->vma
13912 + h->root.u.def.section->output_offset);
13913 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13915 loc = htab->relbss->contents;
13916 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
13917 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13920 /* Mark some specially defined symbols as absolute. */
13921 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
13922 sym->st_shndx = SHN_ABS;
13927 /* Used to decide how to sort relocs in an optimal manner for the
13928 dynamic linker, before writing them out. */
13930 static enum elf_reloc_type_class
13931 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
13933 enum elf_ppc64_reloc_type r_type;
13935 r_type = ELF64_R_TYPE (rela->r_info);
13938 case R_PPC64_RELATIVE:
13939 return reloc_class_relative;
13940 case R_PPC64_JMP_SLOT:
13941 return reloc_class_plt;
13943 return reloc_class_copy;
13945 return reloc_class_normal;
13949 /* Finish up the dynamic sections. */
13952 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
13953 struct bfd_link_info *info)
13955 struct ppc_link_hash_table *htab;
13959 htab = ppc_hash_table (info);
13963 dynobj = htab->elf.dynobj;
13964 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
13966 if (htab->elf.dynamic_sections_created)
13968 Elf64_External_Dyn *dyncon, *dynconend;
13970 if (sdyn == NULL || htab->got == NULL)
13973 dyncon = (Elf64_External_Dyn *) sdyn->contents;
13974 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
13975 for (; dyncon < dynconend; dyncon++)
13977 Elf_Internal_Dyn dyn;
13980 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
13987 case DT_PPC64_GLINK:
13989 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13990 /* We stupidly defined DT_PPC64_GLINK to be the start
13991 of glink rather than the first entry point, which is
13992 what ld.so needs, and now have a bigger stub to
13993 support automatic multiple TOCs. */
13994 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
13998 s = bfd_get_section_by_name (output_bfd, ".opd");
14001 dyn.d_un.d_ptr = s->vma;
14004 case DT_PPC64_OPDSZ:
14005 s = bfd_get_section_by_name (output_bfd, ".opd");
14008 dyn.d_un.d_val = s->size;
14013 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14018 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14022 dyn.d_un.d_val = htab->relplt->size;
14026 /* Don't count procedure linkage table relocs in the
14027 overall reloc count. */
14031 dyn.d_un.d_val -= s->size;
14035 /* We may not be using the standard ELF linker script.
14036 If .rela.plt is the first .rela section, we adjust
14037 DT_RELA to not include it. */
14041 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14043 dyn.d_un.d_ptr += s->size;
14047 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14051 if (htab->got != NULL && htab->got->size != 0)
14053 /* Fill in the first entry in the global offset table.
14054 We use it to hold the link-time TOCbase. */
14055 bfd_put_64 (output_bfd,
14056 elf_gp (output_bfd) + TOC_BASE_OFF,
14057 htab->got->contents);
14059 /* Set .got entry size. */
14060 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
14063 if (htab->plt != NULL && htab->plt->size != 0)
14065 /* Set .plt entry size. */
14066 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
14070 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14071 brlt ourselves if emitrelocations. */
14072 if (htab->brlt != NULL
14073 && htab->brlt->reloc_count != 0
14074 && !_bfd_elf_link_output_relocs (output_bfd,
14076 elf_section_data (htab->brlt)->rela.hdr,
14077 elf_section_data (htab->brlt)->relocs,
14081 if (htab->glink != NULL
14082 && htab->glink->reloc_count != 0
14083 && !_bfd_elf_link_output_relocs (output_bfd,
14085 elf_section_data (htab->glink)->rela.hdr,
14086 elf_section_data (htab->glink)->relocs,
14091 if (htab->glink_eh_frame != NULL
14092 && htab->glink_eh_frame->sec_info_type == ELF_INFO_TYPE_EH_FRAME
14093 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14094 htab->glink_eh_frame,
14095 htab->glink_eh_frame->contents))
14098 /* We need to handle writing out multiple GOT sections ourselves,
14099 since we didn't add them to DYNOBJ. We know dynobj is the first
14101 while ((dynobj = dynobj->link_next) != NULL)
14105 if (!is_ppc64_elf (dynobj))
14108 s = ppc64_elf_tdata (dynobj)->got;
14111 && s->output_section != bfd_abs_section_ptr
14112 && !bfd_set_section_contents (output_bfd, s->output_section,
14113 s->contents, s->output_offset,
14116 s = ppc64_elf_tdata (dynobj)->relgot;
14119 && s->output_section != bfd_abs_section_ptr
14120 && !bfd_set_section_contents (output_bfd, s->output_section,
14121 s->contents, s->output_offset,
14129 #include "elf64-target.h"
14131 /* FreeBSD support */
14133 #undef TARGET_LITTLE_SYM
14134 #undef TARGET_LITTLE_NAME
14136 #undef TARGET_BIG_SYM
14137 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14138 #undef TARGET_BIG_NAME
14139 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14142 #define ELF_OSABI ELFOSABI_FREEBSD
14145 #define elf64_bed elf64_powerpc_fbsd_bed
14147 #include "elf64-target.h"