1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 static bfd_vma opd_entry_value
58 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_post_process_headers _bfd_elf_set_osabi
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE 24
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
131 /* TOC base pointers offset from start of TOC. */
132 #define TOC_BASE_OFF 0x8000
134 /* Offset of tp and dtp pointers from start of TLS block. */
135 #define TP_OFFSET 0x7000
136 #define DTP_OFFSET 0x8000
138 /* .plt call stub instructions. The normal stub is like this, but
139 sometimes the .plt entry crosses a 64k boundary and we need to
140 insert an addi to adjust r12. */
141 #define PLT_CALL_STUB_SIZE (7*4)
142 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
143 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
144 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
145 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
146 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
147 /* ld %r11,xxx+16@l(%r12) */
148 #define BCTR 0x4e800420 /* bctr */
151 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
152 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
153 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
154 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
156 #define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
157 #define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
158 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
159 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
160 #define BNECTR 0x4ca20420 /* bnectr+ */
161 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
163 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
164 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
166 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
168 /* glink call stub instructions. We enter with the index in R0. */
169 #define GLINK_CALL_STUB_SIZE (16*4)
173 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
174 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
176 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
177 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
178 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
187 #define NOP 0x60000000
189 /* Some other nops. */
190 #define CROR_151515 0x4def7b82
191 #define CROR_313131 0x4ffffb82
193 /* .glink entries for the first 32k functions are two instructions. */
194 #define LI_R0_0 0x38000000 /* li %r0,0 */
195 #define B_DOT 0x48000000 /* b . */
197 /* After that, we need two instructions to load the index, followed by
199 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
200 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
202 /* Instructions used by the save and restore reg functions. */
203 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
204 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
205 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
206 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
207 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
208 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
209 #define LI_R12_0 0x39800000 /* li %r12,0 */
210 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
211 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
212 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
213 #define BLR 0x4e800020 /* blr */
215 /* Since .opd is an array of descriptors and each entry will end up
216 with identical R_PPC64_RELATIVE relocs, there is really no need to
217 propagate .opd relocs; The dynamic linker should be taught to
218 relocate .opd without reloc entries. */
219 #ifndef NO_OPD_RELOCS
220 #define NO_OPD_RELOCS 0
223 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
225 /* Relocation HOWTO's. */
226 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
228 static reloc_howto_type ppc64_elf_howto_raw[] = {
229 /* This reloc does nothing. */
230 HOWTO (R_PPC64_NONE, /* type */
232 2, /* size (0 = byte, 1 = short, 2 = long) */
234 FALSE, /* pc_relative */
236 complain_overflow_dont, /* complain_on_overflow */
237 bfd_elf_generic_reloc, /* special_function */
238 "R_PPC64_NONE", /* name */
239 FALSE, /* partial_inplace */
242 FALSE), /* pcrel_offset */
244 /* A standard 32 bit relocation. */
245 HOWTO (R_PPC64_ADDR32, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_bitfield, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_PPC64_ADDR32", /* name */
254 FALSE, /* partial_inplace */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
259 /* An absolute 26 bit branch; the lower two bits must be zero.
260 FIXME: we don't check that, we just clear them. */
261 HOWTO (R_PPC64_ADDR24, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR24", /* name */
270 FALSE, /* partial_inplace */
272 0x03fffffc, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* A standard 16 bit relocation. */
276 HOWTO (R_PPC64_ADDR16, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_PPC64_ADDR16", /* name */
285 FALSE, /* partial_inplace */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* A 16 bit relocation without overflow. */
291 HOWTO (R_PPC64_ADDR16_LO, /* type */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE, /* pc_relative */
297 complain_overflow_dont,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_PPC64_ADDR16_LO", /* name */
300 FALSE, /* partial_inplace */
302 0xffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
305 /* Bits 16-31 of an address. */
306 HOWTO (R_PPC64_ADDR16_HI, /* type */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC64_ADDR16_HI", /* name */
315 FALSE, /* partial_inplace */
317 0xffff, /* dst_mask */
318 FALSE), /* pcrel_offset */
320 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
321 bits, treated as a signed number, is negative. */
322 HOWTO (R_PPC64_ADDR16_HA, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_dont, /* complain_on_overflow */
329 ppc64_elf_ha_reloc, /* special_function */
330 "R_PPC64_ADDR16_HA", /* name */
331 FALSE, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* An absolute 16 bit branch; the lower two bits must be zero.
337 FIXME: we don't check that, we just clear them. */
338 HOWTO (R_PPC64_ADDR14, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 ppc64_elf_branch_reloc, /* special_function */
346 "R_PPC64_ADDR14", /* name */
347 FALSE, /* partial_inplace */
349 0x0000fffc, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* An absolute 16 bit branch, for which bit 10 should be set to
353 indicate that the branch is expected to be taken. The lower two
354 bits must be zero. */
355 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 ppc64_elf_brtaken_reloc, /* special_function */
363 "R_PPC64_ADDR14_BRTAKEN",/* name */
364 FALSE, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is not expected to be taken. The lower
371 two bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE, /* pc_relative */
378 complain_overflow_bitfield, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc, /* special_function */
380 "R_PPC64_ADDR14_BRNTAKEN",/* name */
381 FALSE, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE), /* pcrel_offset */
386 /* A relative 26 bit branch; the lower two bits must be zero. */
387 HOWTO (R_PPC64_REL24, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 ppc64_elf_branch_reloc, /* special_function */
395 "R_PPC64_REL24", /* name */
396 FALSE, /* partial_inplace */
398 0x03fffffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
401 /* A relative 16 bit branch; the lower two bits must be zero. */
402 HOWTO (R_PPC64_REL14, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 TRUE, /* pc_relative */
408 complain_overflow_signed, /* complain_on_overflow */
409 ppc64_elf_branch_reloc, /* special_function */
410 "R_PPC64_REL14", /* name */
411 FALSE, /* partial_inplace */
413 0x0000fffc, /* dst_mask */
414 TRUE), /* pcrel_offset */
416 /* A relative 16 bit branch. Bit 10 should be set to indicate that
417 the branch is expected to be taken. The lower two bits must be
419 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 ppc64_elf_brtaken_reloc, /* special_function */
427 "R_PPC64_REL14_BRTAKEN", /* name */
428 FALSE, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is not expected to be taken. The lower two bits must
436 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_signed, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc, /* special_function */
444 "R_PPC64_REL14_BRNTAKEN",/* name */
445 FALSE, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
452 HOWTO (R_PPC64_GOT16, /* type */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE, /* pc_relative */
458 complain_overflow_signed, /* complain_on_overflow */
459 ppc64_elf_unhandled_reloc, /* special_function */
460 "R_PPC64_GOT16", /* name */
461 FALSE, /* partial_inplace */
463 0xffff, /* dst_mask */
464 FALSE), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
468 HOWTO (R_PPC64_GOT16_LO, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc, /* special_function */
476 "R_PPC64_GOT16_LO", /* name */
477 FALSE, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_HI, /* type */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_dont,/* complain_on_overflow */
491 ppc64_elf_unhandled_reloc, /* special_function */
492 "R_PPC64_GOT16_HI", /* name */
493 FALSE, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HA, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_dont,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc, /* special_function */
508 "R_PPC64_GOT16_HA", /* name */
509 FALSE, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* This is used only by the dynamic linker. The symbol should exist
515 both in the object being run and in some shared library. The
516 dynamic linker copies the data addressed by the symbol from the
517 shared library into the object, because the object being
518 run has to have the data at some particular address. */
519 HOWTO (R_PPC64_COPY, /* type */
521 0, /* this one is variable size */
523 FALSE, /* pc_relative */
525 complain_overflow_dont, /* complain_on_overflow */
526 ppc64_elf_unhandled_reloc, /* special_function */
527 "R_PPC64_COPY", /* name */
528 FALSE, /* partial_inplace */
531 FALSE), /* pcrel_offset */
533 /* Like R_PPC64_ADDR64, but used when setting global offset table
535 HOWTO (R_PPC64_GLOB_DAT, /* type */
537 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
539 FALSE, /* pc_relative */
541 complain_overflow_dont, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc, /* special_function */
543 "R_PPC64_GLOB_DAT", /* name */
544 FALSE, /* partial_inplace */
546 ONES (64), /* dst_mask */
547 FALSE), /* pcrel_offset */
549 /* Created by the link editor. Marks a procedure linkage table
550 entry for a symbol. */
551 HOWTO (R_PPC64_JMP_SLOT, /* type */
553 0, /* size (0 = byte, 1 = short, 2 = long) */
555 FALSE, /* pc_relative */
557 complain_overflow_dont, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc, /* special_function */
559 "R_PPC64_JMP_SLOT", /* name */
560 FALSE, /* partial_inplace */
563 FALSE), /* pcrel_offset */
565 /* Used only by the dynamic linker. When the object is run, this
566 doubleword64 is set to the load address of the object, plus the
568 HOWTO (R_PPC64_RELATIVE, /* type */
570 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_RELATIVE", /* name */
577 FALSE, /* partial_inplace */
579 ONES (64), /* dst_mask */
580 FALSE), /* pcrel_offset */
582 /* Like R_PPC64_ADDR32, but may be unaligned. */
583 HOWTO (R_PPC64_UADDR32, /* type */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
587 FALSE, /* pc_relative */
589 complain_overflow_bitfield, /* complain_on_overflow */
590 bfd_elf_generic_reloc, /* special_function */
591 "R_PPC64_UADDR32", /* name */
592 FALSE, /* partial_inplace */
594 0xffffffff, /* dst_mask */
595 FALSE), /* pcrel_offset */
597 /* Like R_PPC64_ADDR16, but may be unaligned. */
598 HOWTO (R_PPC64_UADDR16, /* type */
600 1, /* size (0 = byte, 1 = short, 2 = long) */
602 FALSE, /* pc_relative */
604 complain_overflow_bitfield, /* complain_on_overflow */
605 bfd_elf_generic_reloc, /* special_function */
606 "R_PPC64_UADDR16", /* name */
607 FALSE, /* partial_inplace */
609 0xffff, /* dst_mask */
610 FALSE), /* pcrel_offset */
612 /* 32-bit PC relative. */
613 HOWTO (R_PPC64_REL32, /* type */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
617 TRUE, /* pc_relative */
619 /* FIXME: Verify. Was complain_overflow_bitfield. */
620 complain_overflow_signed, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_REL32", /* name */
623 FALSE, /* partial_inplace */
625 0xffffffff, /* dst_mask */
626 TRUE), /* pcrel_offset */
628 /* 32-bit relocation to the symbol's procedure linkage table. */
629 HOWTO (R_PPC64_PLT32, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE, /* pc_relative */
635 complain_overflow_bitfield, /* complain_on_overflow */
636 ppc64_elf_unhandled_reloc, /* special_function */
637 "R_PPC64_PLT32", /* name */
638 FALSE, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
643 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
644 FIXME: R_PPC64_PLTREL32 not supported. */
645 HOWTO (R_PPC64_PLTREL32, /* type */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
649 TRUE, /* pc_relative */
651 complain_overflow_signed, /* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_PPC64_PLTREL32", /* name */
654 FALSE, /* partial_inplace */
656 0xffffffff, /* dst_mask */
657 TRUE), /* pcrel_offset */
659 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
661 HOWTO (R_PPC64_PLT16_LO, /* type */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE, /* pc_relative */
667 complain_overflow_dont, /* complain_on_overflow */
668 ppc64_elf_unhandled_reloc, /* special_function */
669 "R_PPC64_PLT16_LO", /* name */
670 FALSE, /* partial_inplace */
672 0xffff, /* dst_mask */
673 FALSE), /* pcrel_offset */
675 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
677 HOWTO (R_PPC64_PLT16_HI, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE, /* pc_relative */
683 complain_overflow_dont, /* complain_on_overflow */
684 ppc64_elf_unhandled_reloc, /* special_function */
685 "R_PPC64_PLT16_HI", /* name */
686 FALSE, /* partial_inplace */
688 0xffff, /* dst_mask */
689 FALSE), /* pcrel_offset */
691 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
693 HOWTO (R_PPC64_PLT16_HA, /* type */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
697 FALSE, /* pc_relative */
699 complain_overflow_dont, /* complain_on_overflow */
700 ppc64_elf_unhandled_reloc, /* special_function */
701 "R_PPC64_PLT16_HA", /* name */
702 FALSE, /* partial_inplace */
704 0xffff, /* dst_mask */
705 FALSE), /* pcrel_offset */
707 /* 16-bit section relative relocation. */
708 HOWTO (R_PPC64_SECTOFF, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE, /* pc_relative */
714 complain_overflow_bitfield, /* complain_on_overflow */
715 ppc64_elf_sectoff_reloc, /* special_function */
716 "R_PPC64_SECTOFF", /* name */
717 FALSE, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE), /* pcrel_offset */
722 /* Like R_PPC64_SECTOFF, but no overflow warning. */
723 HOWTO (R_PPC64_SECTOFF_LO, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_dont, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc, /* special_function */
731 "R_PPC64_SECTOFF_LO", /* name */
732 FALSE, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC64_SECTOFF_HI, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE, /* pc_relative */
744 complain_overflow_dont, /* complain_on_overflow */
745 ppc64_elf_sectoff_reloc, /* special_function */
746 "R_PPC64_SECTOFF_HI", /* name */
747 FALSE, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE), /* pcrel_offset */
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HA, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE, /* pc_relative */
759 complain_overflow_dont, /* complain_on_overflow */
760 ppc64_elf_sectoff_ha_reloc, /* special_function */
761 "R_PPC64_SECTOFF_HA", /* name */
762 FALSE, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE), /* pcrel_offset */
767 /* Like R_PPC64_REL24 without touching the two least significant bits. */
768 HOWTO (R_PPC64_REL30, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 TRUE, /* pc_relative */
774 complain_overflow_dont, /* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
776 "R_PPC64_REL30", /* name */
777 FALSE, /* partial_inplace */
779 0xfffffffc, /* dst_mask */
780 TRUE), /* pcrel_offset */
782 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
784 /* A standard 64-bit relocation. */
785 HOWTO (R_PPC64_ADDR64, /* type */
787 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 FALSE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC64_ADDR64", /* name */
794 FALSE, /* partial_inplace */
796 ONES (64), /* dst_mask */
797 FALSE), /* pcrel_offset */
799 /* The bits 32-47 of an address. */
800 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE, /* pc_relative */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_PPC64_ADDR16_HIGHER", /* name */
809 FALSE, /* partial_inplace */
811 0xffff, /* dst_mask */
812 FALSE), /* pcrel_offset */
814 /* The bits 32-47 of an address, plus 1 if the contents of the low
815 16 bits, treated as a signed number, is negative. */
816 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 FALSE, /* pc_relative */
822 complain_overflow_dont, /* complain_on_overflow */
823 ppc64_elf_ha_reloc, /* special_function */
824 "R_PPC64_ADDR16_HIGHERA", /* name */
825 FALSE, /* partial_inplace */
827 0xffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
830 /* The bits 48-63 of an address. */
831 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC64_ADDR16_HIGHEST", /* name */
840 FALSE, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* The bits 48-63 of an address, plus 1 if the contents of the low
846 16 bits, treated as a signed number, is negative. */
847 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE, /* pc_relative */
853 complain_overflow_dont, /* complain_on_overflow */
854 ppc64_elf_ha_reloc, /* special_function */
855 "R_PPC64_ADDR16_HIGHESTA", /* name */
856 FALSE, /* partial_inplace */
858 0xffff, /* dst_mask */
859 FALSE), /* pcrel_offset */
861 /* Like ADDR64, but may be unaligned. */
862 HOWTO (R_PPC64_UADDR64, /* type */
864 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
866 FALSE, /* pc_relative */
868 complain_overflow_dont, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
870 "R_PPC64_UADDR64", /* name */
871 FALSE, /* partial_inplace */
873 ONES (64), /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* 64-bit relative relocation. */
877 HOWTO (R_PPC64_REL64, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 TRUE, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_REL64", /* name */
886 FALSE, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 TRUE), /* pcrel_offset */
891 /* 64-bit relocation to the symbol's procedure linkage table. */
892 HOWTO (R_PPC64_PLT64, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 FALSE, /* pc_relative */
898 complain_overflow_dont, /* complain_on_overflow */
899 ppc64_elf_unhandled_reloc, /* special_function */
900 "R_PPC64_PLT64", /* name */
901 FALSE, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 FALSE), /* pcrel_offset */
906 /* 64-bit PC relative relocation to the symbol's procedure linkage
908 /* FIXME: R_PPC64_PLTREL64 not supported. */
909 HOWTO (R_PPC64_PLTREL64, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 TRUE, /* pc_relative */
915 complain_overflow_dont, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc, /* special_function */
917 "R_PPC64_PLTREL64", /* name */
918 FALSE, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 TRUE), /* pcrel_offset */
923 /* 16 bit TOC-relative relocation. */
925 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
926 HOWTO (R_PPC64_TOC16, /* type */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc64_elf_toc_reloc, /* special_function */
934 "R_PPC64_TOC16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation without overflow. */
942 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
943 HOWTO (R_PPC64_TOC16_LO, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_dont, /* complain_on_overflow */
950 ppc64_elf_toc_reloc, /* special_function */
951 "R_PPC64_TOC16_LO", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation, high 16 bits. */
959 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_HI, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE, /* pc_relative */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_toc_reloc, /* special_function */
968 "R_PPC64_TOC16_HI", /* name */
969 FALSE, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
975 contents of the low 16 bits, treated as a signed number, is
978 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
979 HOWTO (R_PPC64_TOC16_HA, /* type */
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_dont, /* complain_on_overflow */
986 ppc64_elf_toc_ha_reloc, /* special_function */
987 "R_PPC64_TOC16_HA", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* 64-bit relocation; insert value of TOC base (.TOC.). */
995 /* R_PPC64_TOC 51 doubleword64 .TOC. */
996 HOWTO (R_PPC64_TOC, /* type */
998 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_bitfield, /* complain_on_overflow */
1003 ppc64_elf_toc64_reloc, /* special_function */
1004 "R_PPC64_TOC", /* name */
1005 FALSE, /* partial_inplace */
1007 ONES (64), /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like R_PPC64_GOT16, but also informs the link editor that the
1011 value to relocate may (!) refer to a PLT entry which the link
1012 editor (a) may replace with the symbol value. If the link editor
1013 is unable to fully resolve the symbol, it may (b) create a PLT
1014 entry and store the address to the new PLT entry in the GOT.
1015 This permits lazy resolution of function symbols at run time.
1016 The link editor may also skip all of this and just (c) emit a
1017 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1018 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1019 HOWTO (R_PPC64_PLTGOT16, /* type */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE, /* pc_relative */
1025 complain_overflow_signed, /* complain_on_overflow */
1026 ppc64_elf_unhandled_reloc, /* special_function */
1027 "R_PPC64_PLTGOT16", /* name */
1028 FALSE, /* partial_inplace */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1033 /* Like R_PPC64_PLTGOT16, but without overflow. */
1034 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1035 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc64_elf_unhandled_reloc, /* special_function */
1043 "R_PPC64_PLTGOT16_LO", /* name */
1044 FALSE, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1050 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 FALSE, /* pc_relative */
1057 complain_overflow_dont, /* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HI", /* name */
1060 FALSE, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1065 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1066 1 if the contents of the low 16 bits, treated as a signed number,
1068 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE, /* pc_relative */
1075 complain_overflow_dont,/* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_HA", /* name */
1078 FALSE, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1083 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1084 HOWTO (R_PPC64_ADDR16_DS, /* type */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE, /* pc_relative */
1090 complain_overflow_bitfield, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
1092 "R_PPC64_ADDR16_DS", /* name */
1093 FALSE, /* partial_inplace */
1095 0xfffc, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE, /* pc_relative */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_PPC64_ADDR16_LO_DS",/* name */
1108 FALSE, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1113 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_GOT16_DS, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE, /* pc_relative */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc, /* special_function */
1122 "R_PPC64_GOT16_DS", /* name */
1123 FALSE, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE, /* pc_relative */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_GOT16_LO_DS", /* name */
1138 FALSE, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1143 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE, /* pc_relative */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc, /* special_function */
1152 "R_PPC64_PLT16_LO_DS", /* name */
1153 FALSE, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1158 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE, /* pc_relative */
1165 complain_overflow_bitfield, /* complain_on_overflow */
1166 ppc64_elf_sectoff_reloc, /* special_function */
1167 "R_PPC64_SECTOFF_DS", /* name */
1168 FALSE, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE, /* pc_relative */
1180 complain_overflow_dont, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc, /* special_function */
1182 "R_PPC64_SECTOFF_LO_DS",/* name */
1183 FALSE, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1188 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_TOC16_DS, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE, /* pc_relative */
1195 complain_overflow_signed, /* complain_on_overflow */
1196 ppc64_elf_toc_reloc, /* special_function */
1197 "R_PPC64_TOC16_DS", /* name */
1198 FALSE, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE, /* pc_relative */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc, /* special_function */
1212 "R_PPC64_TOC16_LO_DS", /* name */
1213 FALSE, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1218 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1219 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1220 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_signed, /* complain_on_overflow */
1227 ppc64_elf_unhandled_reloc, /* special_function */
1228 "R_PPC64_PLTGOT16_DS", /* name */
1229 FALSE, /* partial_inplace */
1231 0xfffc, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1235 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1236 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE, /* pc_relative */
1242 complain_overflow_dont, /* complain_on_overflow */
1243 ppc64_elf_unhandled_reloc, /* special_function */
1244 "R_PPC64_PLTGOT16_LO_DS",/* name */
1245 FALSE, /* partial_inplace */
1247 0xfffc, /* dst_mask */
1248 FALSE), /* pcrel_offset */
1250 /* Marker relocs for TLS. */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE, /* pc_relative */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_PPC64_TLS", /* name */
1260 FALSE, /* partial_inplace */
1263 FALSE), /* pcrel_offset */
1265 HOWTO (R_PPC64_TLSGD,
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont, /* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC64_TLSGD", /* name */
1274 FALSE, /* partial_inplace */
1277 FALSE), /* pcrel_offset */
1279 HOWTO (R_PPC64_TLSLD,
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLSLD", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TOCSAVE,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TOCSAVE", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 /* Computes the load module index of the load module that contains the
1308 definition of its TLS sym. */
1309 HOWTO (R_PPC64_DTPMOD64,
1311 4, /* size (0 = byte, 1 = short, 2 = long) */
1313 FALSE, /* pc_relative */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc, /* special_function */
1317 "R_PPC64_DTPMOD64", /* name */
1318 FALSE, /* partial_inplace */
1320 ONES (64), /* dst_mask */
1321 FALSE), /* pcrel_offset */
1323 /* Computes a dtv-relative displacement, the difference between the value
1324 of sym+add and the base address of the thread-local storage block that
1325 contains the definition of sym, minus 0x8000. */
1326 HOWTO (R_PPC64_DTPREL64,
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL64", /* name */
1335 FALSE, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 /* A 16 bit dtprel reloc. */
1341 HOWTO (R_PPC64_DTPREL16,
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_signed, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16", /* name */
1350 FALSE, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1355 /* Like DTPREL16, but no overflow. */
1356 HOWTO (R_PPC64_DTPREL16_LO,
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_LO", /* name */
1365 FALSE, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1370 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HI,
1372 16, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE, /* pc_relative */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HI", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HA,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HA", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HIGHER,
1402 32, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_dont, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HIGHER", /* name */
1410 FALSE, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1417 32, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE, /* pc_relative */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_HIGHERA", /* name */
1425 FALSE, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1432 48, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHEST", /* name */
1440 FALSE, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1460 /* Like DTPREL16, but for insns with a DS field. */
1461 HOWTO (R_PPC64_DTPREL16_DS,
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_DS", /* name */
1470 FALSE, /* partial_inplace */
1472 0xfffc, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1475 /* Like DTPREL16_DS, but no overflow. */
1476 HOWTO (R_PPC64_DTPREL16_LO_DS,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_LO_DS", /* name */
1485 FALSE, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1490 /* Computes a tp-relative displacement, the difference between the value of
1491 sym+add and the value of the thread pointer (r13). */
1492 HOWTO (R_PPC64_TPREL64,
1494 4, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL64", /* name */
1501 FALSE, /* partial_inplace */
1503 ONES (64), /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* A 16 bit tprel reloc. */
1507 HOWTO (R_PPC64_TPREL16,
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_signed, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16", /* name */
1516 FALSE, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Like TPREL16, but no overflow. */
1522 HOWTO (R_PPC64_TPREL16_LO,
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_LO", /* name */
1531 FALSE, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* Like TPREL16_LO, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HI,
1538 16, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE, /* pc_relative */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HI", /* name */
1546 FALSE, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1551 /* Like TPREL16_HI, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HA,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE, /* pc_relative */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HA", /* name */
1561 FALSE, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1566 /* Like TPREL16_HI, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HIGHER,
1568 32, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE, /* pc_relative */
1573 complain_overflow_dont, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HIGHER", /* name */
1576 FALSE, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1581 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHERA,
1583 32, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE, /* pc_relative */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_HIGHERA", /* name */
1591 FALSE, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHEST,
1598 48, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE, /* pc_relative */
1603 complain_overflow_dont, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_TPREL16_HIGHEST", /* name */
1606 FALSE, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1611 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE, /* pc_relative */
1618 complain_overflow_dont, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc, /* special_function */
1620 "R_PPC64_TPREL16_HIGHESTA", /* name */
1621 FALSE, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1626 /* Like TPREL16, but for insns with a DS field. */
1627 HOWTO (R_PPC64_TPREL16_DS,
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE, /* pc_relative */
1633 complain_overflow_signed, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_DS", /* name */
1636 FALSE, /* partial_inplace */
1638 0xfffc, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1641 /* Like TPREL16_DS, but no overflow. */
1642 HOWTO (R_PPC64_TPREL16_LO_DS,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE, /* pc_relative */
1648 complain_overflow_dont, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_LO_DS", /* name */
1651 FALSE, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1658 to the first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSGD16,
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_signed, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_GOT_TLSGD16", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* Like GOT_TLSGD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_GOT_TLSGD16_LO", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1690 16, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE, /* pc_relative */
1695 complain_overflow_dont, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc, /* special_function */
1697 "R_PPC64_GOT_TLSGD16_HI", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HA", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1718 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1719 with values (sym+add)@dtpmod and zero, and computes the offset to the
1720 first entry relative to the TOC base (r2). */
1721 HOWTO (R_PPC64_GOT_TLSLD16,
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE, /* pc_relative */
1727 complain_overflow_signed, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc, /* special_function */
1729 "R_PPC64_GOT_TLSLD16", /* name */
1730 FALSE, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE), /* pcrel_offset */
1735 /* Like GOT_TLSLD16, but no overflow. */
1736 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE, /* pc_relative */
1742 complain_overflow_dont, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSLD16_LO", /* name */
1745 FALSE, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1750 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1752 16, /* rightshift */
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE, /* pc_relative */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc, /* special_function */
1759 "R_PPC64_GOT_TLSLD16_HI", /* name */
1760 FALSE, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE, /* pc_relative */
1772 complain_overflow_dont, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HA", /* name */
1775 FALSE, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1781 the offset to the entry relative to the TOC base (r2). */
1782 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 FALSE, /* pc_relative */
1788 complain_overflow_signed, /* complain_on_overflow */
1789 ppc64_elf_unhandled_reloc, /* special_function */
1790 "R_PPC64_GOT_DTPREL16_DS", /* name */
1791 FALSE, /* partial_inplace */
1793 0xfffc, /* dst_mask */
1794 FALSE), /* pcrel_offset */
1796 /* Like GOT_DTPREL16_DS, but no overflow. */
1797 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE, /* pc_relative */
1803 complain_overflow_dont, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1806 FALSE, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1813 16, /* rightshift */
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE, /* pc_relative */
1818 complain_overflow_dont, /* complain_on_overflow */
1819 ppc64_elf_unhandled_reloc, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_HI", /* name */
1821 FALSE, /* partial_inplace */
1823 0xffff, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE, /* pc_relative */
1833 complain_overflow_dont, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HA", /* name */
1836 FALSE, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE), /* pcrel_offset */
1841 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1842 offset to the entry relative to the TOC base (r2). */
1843 HOWTO (R_PPC64_GOT_TPREL16_DS,
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_signed, /* complain_on_overflow */
1850 ppc64_elf_unhandled_reloc, /* special_function */
1851 "R_PPC64_GOT_TPREL16_DS", /* name */
1852 FALSE, /* partial_inplace */
1854 0xfffc, /* dst_mask */
1855 FALSE), /* pcrel_offset */
1857 /* Like GOT_TPREL16_DS, but no overflow. */
1858 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE, /* pc_relative */
1864 complain_overflow_dont, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc, /* special_function */
1866 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1867 FALSE, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE), /* pcrel_offset */
1872 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1873 HOWTO (R_PPC64_GOT_TPREL16_HI,
1874 16, /* rightshift */
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1877 FALSE, /* pc_relative */
1879 complain_overflow_dont, /* complain_on_overflow */
1880 ppc64_elf_unhandled_reloc, /* special_function */
1881 "R_PPC64_GOT_TPREL16_HI", /* name */
1882 FALSE, /* partial_inplace */
1884 0xffff, /* dst_mask */
1885 FALSE), /* pcrel_offset */
1887 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HA,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE, /* pc_relative */
1894 complain_overflow_dont, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HA", /* name */
1897 FALSE, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE), /* pcrel_offset */
1902 HOWTO (R_PPC64_JMP_IREL, /* type */
1904 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1906 FALSE, /* pc_relative */
1908 complain_overflow_dont, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc, /* special_function */
1910 "R_PPC64_JMP_IREL", /* name */
1911 FALSE, /* partial_inplace */
1914 FALSE), /* pcrel_offset */
1916 HOWTO (R_PPC64_IRELATIVE, /* type */
1918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_dont, /* complain_on_overflow */
1923 bfd_elf_generic_reloc, /* special_function */
1924 "R_PPC64_IRELATIVE", /* name */
1925 FALSE, /* partial_inplace */
1927 ONES (64), /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* A 16 bit relative relocation. */
1931 HOWTO (R_PPC64_REL16, /* type */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 TRUE, /* pc_relative */
1937 complain_overflow_bitfield, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 "R_PPC64_REL16", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 TRUE), /* pcrel_offset */
1945 /* A 16 bit relative relocation without overflow. */
1946 HOWTO (R_PPC64_REL16_LO, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE, /* pc_relative */
1952 complain_overflow_dont,/* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_REL16_LO", /* name */
1955 FALSE, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE), /* pcrel_offset */
1960 /* The high order 16 bits of a relative address. */
1961 HOWTO (R_PPC64_REL16_HI, /* type */
1962 16, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1965 TRUE, /* pc_relative */
1967 complain_overflow_dont, /* complain_on_overflow */
1968 bfd_elf_generic_reloc, /* special_function */
1969 "R_PPC64_REL16_HI", /* name */
1970 FALSE, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address, plus 1 if the contents of
1976 the low 16 bits, treated as a signed number, is negative. */
1977 HOWTO (R_PPC64_REL16_HA, /* type */
1978 16, /* rightshift */
1979 1, /* size (0 = byte, 1 = short, 2 = long) */
1981 TRUE, /* pc_relative */
1983 complain_overflow_dont, /* complain_on_overflow */
1984 ppc64_elf_ha_reloc, /* special_function */
1985 "R_PPC64_REL16_HA", /* name */
1986 FALSE, /* partial_inplace */
1988 0xffff, /* dst_mask */
1989 TRUE), /* pcrel_offset */
1991 /* GNU extension to record C++ vtable hierarchy. */
1992 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1994 0, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE, /* pc_relative */
1998 complain_overflow_dont, /* complain_on_overflow */
1999 NULL, /* special_function */
2000 "R_PPC64_GNU_VTINHERIT", /* name */
2001 FALSE, /* partial_inplace */
2004 FALSE), /* pcrel_offset */
2006 /* GNU extension to record C++ vtable member usage. */
2007 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2009 0, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 NULL, /* special_function */
2015 "R_PPC64_GNU_VTENTRY", /* name */
2016 FALSE, /* partial_inplace */
2019 FALSE), /* pcrel_offset */
2023 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2027 ppc_howto_init (void)
2029 unsigned int i, type;
2032 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2035 type = ppc64_elf_howto_raw[i].type;
2036 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2037 / sizeof (ppc64_elf_howto_table[0])));
2038 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2042 static reloc_howto_type *
2043 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2044 bfd_reloc_code_real_type code)
2046 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2048 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2049 /* Initialize howto table if needed. */
2057 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2059 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2061 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2063 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2065 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2067 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2069 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2071 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2073 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2075 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2077 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2079 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2081 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2083 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2085 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2087 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2089 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2091 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2093 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2095 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2097 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2099 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2101 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2103 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2105 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2107 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2109 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2111 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2113 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2115 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2117 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2119 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2121 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2123 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2125 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2127 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2129 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2131 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2133 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2135 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2137 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2139 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2141 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2143 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2145 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2147 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2149 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2151 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2153 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2155 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2157 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2159 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2161 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2163 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2165 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2167 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2169 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2171 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2173 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2175 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2177 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2179 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2181 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2183 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2185 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2187 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2189 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2191 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2193 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2195 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2197 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2199 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2201 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2203 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2205 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2207 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2209 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2211 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2213 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2215 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2217 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2219 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2221 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2223 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2225 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2227 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2229 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2231 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2233 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2235 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2237 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2239 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2241 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2243 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2245 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2247 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2249 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2251 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2253 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2255 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2257 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2259 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2261 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2263 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2265 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2267 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2269 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2273 return ppc64_elf_howto_table[r];
2276 static reloc_howto_type *
2277 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2283 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2285 if (ppc64_elf_howto_raw[i].name != NULL
2286 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2287 return &ppc64_elf_howto_raw[i];
2292 /* Set the howto pointer for a PowerPC ELF reloc. */
2295 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2296 Elf_Internal_Rela *dst)
2300 /* Initialize howto table if needed. */
2301 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2304 type = ELF64_R_TYPE (dst->r_info);
2305 if (type >= (sizeof (ppc64_elf_howto_table)
2306 / sizeof (ppc64_elf_howto_table[0])))
2308 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2310 type = R_PPC64_NONE;
2312 cache_ptr->howto = ppc64_elf_howto_table[type];
2315 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2317 static bfd_reloc_status_type
2318 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2319 void *data, asection *input_section,
2320 bfd *output_bfd, char **error_message)
2322 /* If this is a relocatable link (output_bfd test tells us), just
2323 call the generic function. Any adjustment will be done at final
2325 if (output_bfd != NULL)
2326 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2327 input_section, output_bfd, error_message);
2329 /* Adjust the addend for sign extension of the low 16 bits.
2330 We won't actually be using the low 16 bits, so trashing them
2332 reloc_entry->addend += 0x8000;
2333 return bfd_reloc_continue;
2336 static bfd_reloc_status_type
2337 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2341 if (output_bfd != NULL)
2342 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2343 input_section, output_bfd, error_message);
2345 if (strcmp (symbol->section->name, ".opd") == 0
2346 && (symbol->section->owner->flags & DYNAMIC) == 0)
2348 bfd_vma dest = opd_entry_value (symbol->section,
2349 symbol->value + reloc_entry->addend,
2351 if (dest != (bfd_vma) -1)
2352 reloc_entry->addend = dest - (symbol->value
2353 + symbol->section->output_section->vma
2354 + symbol->section->output_offset);
2356 return bfd_reloc_continue;
2359 static bfd_reloc_status_type
2360 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2361 void *data, asection *input_section,
2362 bfd *output_bfd, char **error_message)
2365 enum elf_ppc64_reloc_type r_type;
2366 bfd_size_type octets;
2367 /* Assume 'at' branch hints. */
2368 bfd_boolean is_isa_v2 = TRUE;
2370 /* If this is a relocatable link (output_bfd test tells us), just
2371 call the generic function. Any adjustment will be done at final
2373 if (output_bfd != NULL)
2374 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2375 input_section, output_bfd, error_message);
2377 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2378 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2379 insn &= ~(0x01 << 21);
2380 r_type = reloc_entry->howto->type;
2381 if (r_type == R_PPC64_ADDR14_BRTAKEN
2382 || r_type == R_PPC64_REL14_BRTAKEN)
2383 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2387 /* Set 'a' bit. This is 0b00010 in BO field for branch
2388 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2389 for branch on CTR insns (BO == 1a00t or 1a01t). */
2390 if ((insn & (0x14 << 21)) == (0x04 << 21))
2392 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2402 if (!bfd_is_com_section (symbol->section))
2403 target = symbol->value;
2404 target += symbol->section->output_section->vma;
2405 target += symbol->section->output_offset;
2406 target += reloc_entry->addend;
2408 from = (reloc_entry->address
2409 + input_section->output_offset
2410 + input_section->output_section->vma);
2412 /* Invert 'y' bit if not the default. */
2413 if ((bfd_signed_vma) (target - from) < 0)
2416 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2418 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2419 input_section, output_bfd, error_message);
2422 static bfd_reloc_status_type
2423 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2424 void *data, asection *input_section,
2425 bfd *output_bfd, char **error_message)
2427 /* If this is a relocatable link (output_bfd test tells us), just
2428 call the generic function. Any adjustment will be done at final
2430 if (output_bfd != NULL)
2431 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2432 input_section, output_bfd, error_message);
2434 /* Subtract the symbol section base address. */
2435 reloc_entry->addend -= symbol->section->output_section->vma;
2436 return bfd_reloc_continue;
2439 static bfd_reloc_status_type
2440 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2441 void *data, asection *input_section,
2442 bfd *output_bfd, char **error_message)
2444 /* If this is a relocatable link (output_bfd test tells us), just
2445 call the generic function. Any adjustment will be done at final
2447 if (output_bfd != NULL)
2448 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2449 input_section, output_bfd, error_message);
2451 /* Subtract the symbol section base address. */
2452 reloc_entry->addend -= symbol->section->output_section->vma;
2454 /* Adjust the addend for sign extension of the low 16 bits. */
2455 reloc_entry->addend += 0x8000;
2456 return bfd_reloc_continue;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd != NULL)
2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2471 input_section, output_bfd, error_message);
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2475 TOCstart = ppc64_elf_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 (dynobj, 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_linker_section (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_linker_section (dynobj, ".got");
4351 htab->plt = bfd_get_linker_section (dynobj, ".plt");
4352 htab->relplt = bfd_get_linker_section (dynobj, ".rela.plt");
4353 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4355 htab->relbss = bfd_get_linker_section (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,
5526 bfd_boolean in_code_sec)
5528 bfd *opd_bfd = opd_sec->owner;
5529 Elf_Internal_Rela *relocs;
5530 Elf_Internal_Rela *lo, *hi, *look;
5533 /* No relocs implies we are linking a --just-symbols object, or looking
5534 at a final linked executable with addr2line or somesuch. */
5535 if (opd_sec->reloc_count == 0)
5539 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5540 return (bfd_vma) -1;
5542 val = bfd_get_64 (opd_bfd, buf);
5543 if (code_sec != NULL)
5545 asection *sec, *likely = NULL;
5551 && val < sec->vma + sec->size)
5557 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5559 && (sec->flags & SEC_LOAD) != 0
5560 && (sec->flags & SEC_ALLOC) != 0)
5565 if (code_off != NULL)
5566 *code_off = val - likely->vma;
5572 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5574 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5576 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5578 /* Go find the opd reloc at the sym address. */
5580 BFD_ASSERT (lo != NULL);
5581 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5585 look = lo + (hi - lo) / 2;
5586 if (look->r_offset < offset)
5588 else if (look->r_offset > offset)
5592 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5594 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5595 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5597 unsigned long symndx = ELF64_R_SYM (look->r_info);
5600 if (symndx < symtab_hdr->sh_info
5601 || elf_sym_hashes (opd_bfd) == NULL)
5603 Elf_Internal_Sym *sym;
5605 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5608 size_t symcnt = symtab_hdr->sh_info;
5609 if (elf_sym_hashes (opd_bfd) == NULL)
5610 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5611 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5612 0, NULL, NULL, NULL);
5615 symtab_hdr->contents = (bfd_byte *) sym;
5619 val = sym->st_value;
5620 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5621 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5625 struct elf_link_hash_entry **sym_hashes;
5626 struct elf_link_hash_entry *rh;
5628 sym_hashes = elf_sym_hashes (opd_bfd);
5629 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5630 rh = elf_follow_link (rh);
5631 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5632 || rh->root.type == bfd_link_hash_defweak);
5633 val = rh->root.u.def.value;
5634 sec = rh->root.u.def.section;
5636 val += look->r_addend;
5637 if (code_off != NULL)
5639 if (code_sec != NULL)
5641 if (in_code_sec && *code_sec != sec)
5646 if (sec != NULL && sec->output_section != NULL)
5647 val += sec->output_section->vma + sec->output_offset;
5656 /* If the ELF symbol SYM might be a function in SEC, return the
5657 function size and set *CODE_OFF to the function's entry point,
5658 otherwise return zero. */
5660 static bfd_size_type
5661 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
5666 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
5667 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
5671 if (!(sym->flags & BSF_SYNTHETIC))
5672 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
5674 if (strcmp (sym->section->name, ".opd") == 0)
5676 if (opd_entry_value (sym->section, sym->value,
5677 &sec, code_off, TRUE) == (bfd_vma) -1)
5679 /* An old ABI binary with dot-syms has a size of 24 on the .opd
5680 symbol. This size has nothing to do with the code size of the
5681 function, which is what we're supposed to return, but the
5682 code size isn't available without looking up the dot-sym.
5683 However, doing that would be a waste of time particularly
5684 since elf_find_function will look at the dot-sym anyway.
5685 Now, elf_find_function will keep the largest size of any
5686 function sym found at the code address of interest, so return
5687 1 here to avoid it incorrectly caching a larger function size
5688 for a small function. This does mean we return the wrong
5689 size for a new-ABI function of size 24, but all that does is
5690 disable caching for such functions. */
5696 if (sym->section != sec)
5698 *code_off = sym->value;
5705 /* Return true if symbol is defined in a regular object file. */
5708 is_static_defined (struct elf_link_hash_entry *h)
5710 return ((h->root.type == bfd_link_hash_defined
5711 || h->root.type == bfd_link_hash_defweak)
5712 && h->root.u.def.section != NULL
5713 && h->root.u.def.section->output_section != NULL);
5716 /* If FDH is a function descriptor symbol, return the associated code
5717 entry symbol if it is defined. Return NULL otherwise. */
5719 static struct ppc_link_hash_entry *
5720 defined_code_entry (struct ppc_link_hash_entry *fdh)
5722 if (fdh->is_func_descriptor)
5724 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5725 if (fh->elf.root.type == bfd_link_hash_defined
5726 || fh->elf.root.type == bfd_link_hash_defweak)
5732 /* If FH is a function code entry symbol, return the associated
5733 function descriptor symbol if it is defined. Return NULL otherwise. */
5735 static struct ppc_link_hash_entry *
5736 defined_func_desc (struct ppc_link_hash_entry *fh)
5739 && fh->oh->is_func_descriptor)
5741 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5742 if (fdh->elf.root.type == bfd_link_hash_defined
5743 || fdh->elf.root.type == bfd_link_hash_defweak)
5749 /* Mark all our entry sym sections, both opd and code section. */
5752 ppc64_elf_gc_keep (struct bfd_link_info *info)
5754 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5755 struct bfd_sym_chain *sym;
5760 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5762 struct ppc_link_hash_entry *eh, *fh;
5765 eh = (struct ppc_link_hash_entry *)
5766 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5769 if (eh->elf.root.type != bfd_link_hash_defined
5770 && eh->elf.root.type != bfd_link_hash_defweak)
5773 fh = defined_code_entry (eh);
5776 sec = fh->elf.root.u.def.section;
5777 sec->flags |= SEC_KEEP;
5779 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5780 && opd_entry_value (eh->elf.root.u.def.section,
5781 eh->elf.root.u.def.value,
5782 &sec, NULL, FALSE) != (bfd_vma) -1)
5783 sec->flags |= SEC_KEEP;
5785 sec = eh->elf.root.u.def.section;
5786 sec->flags |= SEC_KEEP;
5790 /* Mark sections containing dynamically referenced symbols. When
5791 building shared libraries, we must assume that any visible symbol is
5795 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5797 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5798 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5799 struct ppc_link_hash_entry *fdh;
5801 /* Dynamic linking info is on the func descriptor sym. */
5802 fdh = defined_func_desc (eh);
5806 if ((eh->elf.root.type == bfd_link_hash_defined
5807 || eh->elf.root.type == bfd_link_hash_defweak)
5808 && (eh->elf.ref_dynamic
5809 || (!info->executable
5810 && eh->elf.def_regular
5811 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5812 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
5813 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
5814 || !bfd_hide_sym_by_version (info->version_info,
5815 eh->elf.root.root.string)))))
5818 struct ppc_link_hash_entry *fh;
5820 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5822 /* Function descriptor syms cause the associated
5823 function code sym section to be marked. */
5824 fh = defined_code_entry (eh);
5827 code_sec = fh->elf.root.u.def.section;
5828 code_sec->flags |= SEC_KEEP;
5830 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5831 && opd_entry_value (eh->elf.root.u.def.section,
5832 eh->elf.root.u.def.value,
5833 &code_sec, NULL, FALSE) != (bfd_vma) -1)
5834 code_sec->flags |= SEC_KEEP;
5840 /* Return the section that should be marked against GC for a given
5844 ppc64_elf_gc_mark_hook (asection *sec,
5845 struct bfd_link_info *info,
5846 Elf_Internal_Rela *rel,
5847 struct elf_link_hash_entry *h,
5848 Elf_Internal_Sym *sym)
5852 /* Syms return NULL if we're marking .opd, so we avoid marking all
5853 function sections, as all functions are referenced in .opd. */
5855 if (get_opd_info (sec) != NULL)
5860 enum elf_ppc64_reloc_type r_type;
5861 struct ppc_link_hash_entry *eh, *fh, *fdh;
5863 r_type = ELF64_R_TYPE (rel->r_info);
5866 case R_PPC64_GNU_VTINHERIT:
5867 case R_PPC64_GNU_VTENTRY:
5871 switch (h->root.type)
5873 case bfd_link_hash_defined:
5874 case bfd_link_hash_defweak:
5875 eh = (struct ppc_link_hash_entry *) h;
5876 fdh = defined_func_desc (eh);
5880 /* Function descriptor syms cause the associated
5881 function code sym section to be marked. */
5882 fh = defined_code_entry (eh);
5885 /* They also mark their opd section. */
5886 eh->elf.root.u.def.section->gc_mark = 1;
5888 rsec = fh->elf.root.u.def.section;
5890 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5891 && opd_entry_value (eh->elf.root.u.def.section,
5892 eh->elf.root.u.def.value,
5893 &rsec, NULL, FALSE) != (bfd_vma) -1)
5894 eh->elf.root.u.def.section->gc_mark = 1;
5896 rsec = h->root.u.def.section;
5899 case bfd_link_hash_common:
5900 rsec = h->root.u.c.p->section;
5904 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5910 struct _opd_sec_data *opd;
5912 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5913 opd = get_opd_info (rsec);
5914 if (opd != NULL && opd->func_sec != NULL)
5918 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5925 /* Update the .got, .plt. and dynamic reloc reference counts for the
5926 section being removed. */
5929 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5930 asection *sec, const Elf_Internal_Rela *relocs)
5932 struct ppc_link_hash_table *htab;
5933 Elf_Internal_Shdr *symtab_hdr;
5934 struct elf_link_hash_entry **sym_hashes;
5935 struct got_entry **local_got_ents;
5936 const Elf_Internal_Rela *rel, *relend;
5938 if (info->relocatable)
5941 if ((sec->flags & SEC_ALLOC) == 0)
5944 elf_section_data (sec)->local_dynrel = NULL;
5946 htab = ppc_hash_table (info);
5950 symtab_hdr = &elf_symtab_hdr (abfd);
5951 sym_hashes = elf_sym_hashes (abfd);
5952 local_got_ents = elf_local_got_ents (abfd);
5954 relend = relocs + sec->reloc_count;
5955 for (rel = relocs; rel < relend; rel++)
5957 unsigned long r_symndx;
5958 enum elf_ppc64_reloc_type r_type;
5959 struct elf_link_hash_entry *h = NULL;
5960 unsigned char tls_type = 0;
5962 r_symndx = ELF64_R_SYM (rel->r_info);
5963 r_type = ELF64_R_TYPE (rel->r_info);
5964 if (r_symndx >= symtab_hdr->sh_info)
5966 struct ppc_link_hash_entry *eh;
5967 struct elf_dyn_relocs **pp;
5968 struct elf_dyn_relocs *p;
5970 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5971 h = elf_follow_link (h);
5972 eh = (struct ppc_link_hash_entry *) h;
5974 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5977 /* Everything must go for SEC. */
5983 if (is_branch_reloc (r_type))
5985 struct plt_entry **ifunc = NULL;
5988 if (h->type == STT_GNU_IFUNC)
5989 ifunc = &h->plt.plist;
5991 else if (local_got_ents != NULL)
5993 struct plt_entry **local_plt = (struct plt_entry **)
5994 (local_got_ents + symtab_hdr->sh_info);
5995 unsigned char *local_got_tls_masks = (unsigned char *)
5996 (local_plt + symtab_hdr->sh_info);
5997 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5998 ifunc = local_plt + r_symndx;
6002 struct plt_entry *ent;
6004 for (ent = *ifunc; ent != NULL; ent = ent->next)
6005 if (ent->addend == rel->r_addend)
6009 if (ent->plt.refcount > 0)
6010 ent->plt.refcount -= 1;
6017 case R_PPC64_GOT_TLSLD16:
6018 case R_PPC64_GOT_TLSLD16_LO:
6019 case R_PPC64_GOT_TLSLD16_HI:
6020 case R_PPC64_GOT_TLSLD16_HA:
6021 tls_type = TLS_TLS | TLS_LD;
6024 case R_PPC64_GOT_TLSGD16:
6025 case R_PPC64_GOT_TLSGD16_LO:
6026 case R_PPC64_GOT_TLSGD16_HI:
6027 case R_PPC64_GOT_TLSGD16_HA:
6028 tls_type = TLS_TLS | TLS_GD;
6031 case R_PPC64_GOT_TPREL16_DS:
6032 case R_PPC64_GOT_TPREL16_LO_DS:
6033 case R_PPC64_GOT_TPREL16_HI:
6034 case R_PPC64_GOT_TPREL16_HA:
6035 tls_type = TLS_TLS | TLS_TPREL;
6038 case R_PPC64_GOT_DTPREL16_DS:
6039 case R_PPC64_GOT_DTPREL16_LO_DS:
6040 case R_PPC64_GOT_DTPREL16_HI:
6041 case R_PPC64_GOT_DTPREL16_HA:
6042 tls_type = TLS_TLS | TLS_DTPREL;
6046 case R_PPC64_GOT16_DS:
6047 case R_PPC64_GOT16_HA:
6048 case R_PPC64_GOT16_HI:
6049 case R_PPC64_GOT16_LO:
6050 case R_PPC64_GOT16_LO_DS:
6053 struct got_entry *ent;
6058 ent = local_got_ents[r_symndx];
6060 for (; ent != NULL; ent = ent->next)
6061 if (ent->addend == rel->r_addend
6062 && ent->owner == abfd
6063 && ent->tls_type == tls_type)
6067 if (ent->got.refcount > 0)
6068 ent->got.refcount -= 1;
6072 case R_PPC64_PLT16_HA:
6073 case R_PPC64_PLT16_HI:
6074 case R_PPC64_PLT16_LO:
6078 case R_PPC64_REL14_BRNTAKEN:
6079 case R_PPC64_REL14_BRTAKEN:
6083 struct plt_entry *ent;
6085 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6086 if (ent->addend == rel->r_addend)
6088 if (ent != NULL && ent->plt.refcount > 0)
6089 ent->plt.refcount -= 1;
6100 /* The maximum size of .sfpr. */
6101 #define SFPR_MAX (218*4)
6103 struct sfpr_def_parms
6105 const char name[12];
6106 unsigned char lo, hi;
6107 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6108 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6111 /* Auto-generate _save*, _rest* functions in .sfpr. */
6114 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6116 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6118 size_t len = strlen (parm->name);
6119 bfd_boolean writing = FALSE;
6125 memcpy (sym, parm->name, len);
6128 for (i = parm->lo; i <= parm->hi; i++)
6130 struct elf_link_hash_entry *h;
6132 sym[len + 0] = i / 10 + '0';
6133 sym[len + 1] = i % 10 + '0';
6134 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6138 h->root.type = bfd_link_hash_defined;
6139 h->root.u.def.section = htab->sfpr;
6140 h->root.u.def.value = htab->sfpr->size;
6143 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6145 if (htab->sfpr->contents == NULL)
6147 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6148 if (htab->sfpr->contents == NULL)
6154 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6156 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6158 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6159 htab->sfpr->size = p - htab->sfpr->contents;
6167 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6169 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6174 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6176 p = savegpr0 (abfd, p, r);
6177 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6179 bfd_put_32 (abfd, BLR, p);
6184 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6186 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6191 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6193 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6195 p = restgpr0 (abfd, p, r);
6196 bfd_put_32 (abfd, MTLR_R0, p);
6200 p = restgpr0 (abfd, p, 30);
6201 p = restgpr0 (abfd, p, 31);
6203 bfd_put_32 (abfd, BLR, p);
6208 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6210 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6215 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6217 p = savegpr1 (abfd, p, r);
6218 bfd_put_32 (abfd, BLR, p);
6223 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6225 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6230 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6232 p = restgpr1 (abfd, p, r);
6233 bfd_put_32 (abfd, BLR, p);
6238 savefpr (bfd *abfd, bfd_byte *p, int r)
6240 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6245 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6247 p = savefpr (abfd, p, r);
6248 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6250 bfd_put_32 (abfd, BLR, p);
6255 restfpr (bfd *abfd, bfd_byte *p, int r)
6257 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6262 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6264 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6266 p = restfpr (abfd, p, r);
6267 bfd_put_32 (abfd, MTLR_R0, p);
6271 p = restfpr (abfd, p, 30);
6272 p = restfpr (abfd, p, 31);
6274 bfd_put_32 (abfd, BLR, p);
6279 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6281 p = savefpr (abfd, p, r);
6282 bfd_put_32 (abfd, BLR, p);
6287 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6289 p = restfpr (abfd, p, r);
6290 bfd_put_32 (abfd, BLR, p);
6295 savevr (bfd *abfd, bfd_byte *p, int r)
6297 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6299 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6304 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6306 p = savevr (abfd, p, r);
6307 bfd_put_32 (abfd, BLR, p);
6312 restvr (bfd *abfd, bfd_byte *p, int r)
6314 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6316 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6321 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6323 p = restvr (abfd, p, r);
6324 bfd_put_32 (abfd, BLR, p);
6328 /* Called via elf_link_hash_traverse to transfer dynamic linking
6329 information on function code symbol entries to their corresponding
6330 function descriptor symbol entries. */
6333 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6335 struct bfd_link_info *info;
6336 struct ppc_link_hash_table *htab;
6337 struct plt_entry *ent;
6338 struct ppc_link_hash_entry *fh;
6339 struct ppc_link_hash_entry *fdh;
6340 bfd_boolean force_local;
6342 fh = (struct ppc_link_hash_entry *) h;
6343 if (fh->elf.root.type == bfd_link_hash_indirect)
6347 htab = ppc_hash_table (info);
6351 /* Resolve undefined references to dot-symbols as the value
6352 in the function descriptor, if we have one in a regular object.
6353 This is to satisfy cases like ".quad .foo". Calls to functions
6354 in dynamic objects are handled elsewhere. */
6355 if (fh->elf.root.type == bfd_link_hash_undefweak
6356 && fh->was_undefined
6357 && (fdh = defined_func_desc (fh)) != NULL
6358 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6359 && opd_entry_value (fdh->elf.root.u.def.section,
6360 fdh->elf.root.u.def.value,
6361 &fh->elf.root.u.def.section,
6362 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6364 fh->elf.root.type = fdh->elf.root.type;
6365 fh->elf.forced_local = 1;
6366 fh->elf.def_regular = fdh->elf.def_regular;
6367 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6370 /* If this is a function code symbol, transfer dynamic linking
6371 information to the function descriptor symbol. */
6375 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6376 if (ent->plt.refcount > 0)
6379 || fh->elf.root.root.string[0] != '.'
6380 || fh->elf.root.root.string[1] == '\0')
6383 /* Find the corresponding function descriptor symbol. Create it
6384 as undefined if necessary. */
6386 fdh = lookup_fdh (fh, htab);
6388 && !info->executable
6389 && (fh->elf.root.type == bfd_link_hash_undefined
6390 || fh->elf.root.type == bfd_link_hash_undefweak))
6392 fdh = make_fdh (info, fh);
6397 /* Fake function descriptors are made undefweak. If the function
6398 code symbol is strong undefined, make the fake sym the same.
6399 If the function code symbol is defined, then force the fake
6400 descriptor local; We can't support overriding of symbols in a
6401 shared library on a fake descriptor. */
6405 && fdh->elf.root.type == bfd_link_hash_undefweak)
6407 if (fh->elf.root.type == bfd_link_hash_undefined)
6409 fdh->elf.root.type = bfd_link_hash_undefined;
6410 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6412 else if (fh->elf.root.type == bfd_link_hash_defined
6413 || fh->elf.root.type == bfd_link_hash_defweak)
6415 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6420 && !fdh->elf.forced_local
6421 && (!info->executable
6422 || fdh->elf.def_dynamic
6423 || fdh->elf.ref_dynamic
6424 || (fdh->elf.root.type == bfd_link_hash_undefweak
6425 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6427 if (fdh->elf.dynindx == -1)
6428 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6430 fdh->elf.ref_regular |= fh->elf.ref_regular;
6431 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6432 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6433 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6434 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6436 move_plt_plist (fh, fdh);
6437 fdh->elf.needs_plt = 1;
6439 fdh->is_func_descriptor = 1;
6444 /* Now that the info is on the function descriptor, clear the
6445 function code sym info. Any function code syms for which we
6446 don't have a definition in a regular file, we force local.
6447 This prevents a shared library from exporting syms that have
6448 been imported from another library. Function code syms that
6449 are really in the library we must leave global to prevent the
6450 linker dragging in a definition from a static library. */
6451 force_local = (!fh->elf.def_regular
6453 || !fdh->elf.def_regular
6454 || fdh->elf.forced_local);
6455 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6460 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6461 this hook to a) provide some gcc support functions, and b) transfer
6462 dynamic linking information gathered so far on function code symbol
6463 entries, to their corresponding function descriptor symbol entries. */
6466 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6467 struct bfd_link_info *info)
6469 struct ppc_link_hash_table *htab;
6471 static const struct sfpr_def_parms funcs[] =
6473 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6474 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6475 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6476 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6477 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6478 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6479 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6480 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6481 { "._savef", 14, 31, savefpr, savefpr1_tail },
6482 { "._restf", 14, 31, restfpr, restfpr1_tail },
6483 { "_savevr_", 20, 31, savevr, savevr_tail },
6484 { "_restvr_", 20, 31, restvr, restvr_tail }
6487 htab = ppc_hash_table (info);
6491 if (htab->sfpr == NULL)
6492 /* We don't have any relocs. */
6495 /* Provide any missing _save* and _rest* functions. */
6496 htab->sfpr->size = 0;
6497 if (!info->relocatable)
6498 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6499 if (!sfpr_define (info, &funcs[i]))
6502 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6504 if (htab->sfpr->size == 0)
6505 htab->sfpr->flags |= SEC_EXCLUDE;
6510 /* Adjust a symbol defined by a dynamic object and referenced by a
6511 regular object. The current definition is in some section of the
6512 dynamic object, but we're not including those sections. We have to
6513 change the definition to something the rest of the link can
6517 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6518 struct elf_link_hash_entry *h)
6520 struct ppc_link_hash_table *htab;
6523 htab = ppc_hash_table (info);
6527 /* Deal with function syms. */
6528 if (h->type == STT_FUNC
6529 || h->type == STT_GNU_IFUNC
6532 /* Clear procedure linkage table information for any symbol that
6533 won't need a .plt entry. */
6534 struct plt_entry *ent;
6535 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6536 if (ent->plt.refcount > 0)
6539 || (h->type != STT_GNU_IFUNC
6540 && (SYMBOL_CALLS_LOCAL (info, h)
6541 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6542 && h->root.type == bfd_link_hash_undefweak))))
6544 h->plt.plist = NULL;
6549 h->plt.plist = NULL;
6551 /* If this is a weak symbol, and there is a real definition, the
6552 processor independent code will have arranged for us to see the
6553 real definition first, and we can just use the same value. */
6554 if (h->u.weakdef != NULL)
6556 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6557 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6558 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6559 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6560 if (ELIMINATE_COPY_RELOCS)
6561 h->non_got_ref = h->u.weakdef->non_got_ref;
6565 /* If we are creating a shared library, we must presume that the
6566 only references to the symbol are via the global offset table.
6567 For such cases we need not do anything here; the relocations will
6568 be handled correctly by relocate_section. */
6572 /* If there are no references to this symbol that do not use the
6573 GOT, we don't need to generate a copy reloc. */
6574 if (!h->non_got_ref)
6577 /* Don't generate a copy reloc for symbols defined in the executable. */
6578 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6581 if (ELIMINATE_COPY_RELOCS)
6583 struct ppc_link_hash_entry * eh;
6584 struct elf_dyn_relocs *p;
6586 eh = (struct ppc_link_hash_entry *) h;
6587 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6589 s = p->sec->output_section;
6590 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6594 /* If we didn't find any dynamic relocs in read-only sections, then
6595 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6603 if (h->plt.plist != NULL)
6605 /* We should never get here, but unfortunately there are versions
6606 of gcc out there that improperly (for this ABI) put initialized
6607 function pointers, vtable refs and suchlike in read-only
6608 sections. Allow them to proceed, but warn that this might
6609 break at runtime. */
6610 info->callbacks->einfo
6611 (_("%P: copy reloc against `%s' requires lazy plt linking; "
6612 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6613 h->root.root.string);
6616 /* This is a reference to a symbol defined by a dynamic object which
6617 is not a function. */
6619 /* We must allocate the symbol in our .dynbss section, which will
6620 become part of the .bss section of the executable. There will be
6621 an entry for this symbol in the .dynsym section. The dynamic
6622 object will contain position independent code, so all references
6623 from the dynamic object to this symbol will go through the global
6624 offset table. The dynamic linker will use the .dynsym entry to
6625 determine the address it must put in the global offset table, so
6626 both the dynamic object and the regular object will refer to the
6627 same memory location for the variable. */
6629 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6630 to copy the initial value out of the dynamic object and into the
6631 runtime process image. We need to remember the offset into the
6632 .rela.bss section we are going to use. */
6633 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6635 htab->relbss->size += sizeof (Elf64_External_Rela);
6641 return _bfd_elf_adjust_dynamic_copy (h, s);
6644 /* If given a function descriptor symbol, hide both the function code
6645 sym and the descriptor. */
6647 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6648 struct elf_link_hash_entry *h,
6649 bfd_boolean force_local)
6651 struct ppc_link_hash_entry *eh;
6652 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6654 eh = (struct ppc_link_hash_entry *) h;
6655 if (eh->is_func_descriptor)
6657 struct ppc_link_hash_entry *fh = eh->oh;
6662 struct ppc_link_hash_table *htab;
6665 /* We aren't supposed to use alloca in BFD because on
6666 systems which do not have alloca the version in libiberty
6667 calls xmalloc, which might cause the program to crash
6668 when it runs out of memory. This function doesn't have a
6669 return status, so there's no way to gracefully return an
6670 error. So cheat. We know that string[-1] can be safely
6671 accessed; It's either a string in an ELF string table,
6672 or allocated in an objalloc structure. */
6674 p = eh->elf.root.root.string - 1;
6677 htab = ppc_hash_table (info);
6681 fh = (struct ppc_link_hash_entry *)
6682 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6685 /* Unfortunately, if it so happens that the string we were
6686 looking for was allocated immediately before this string,
6687 then we overwrote the string terminator. That's the only
6688 reason the lookup should fail. */
6691 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6692 while (q >= eh->elf.root.root.string && *q == *p)
6694 if (q < eh->elf.root.root.string && *p == '.')
6695 fh = (struct ppc_link_hash_entry *)
6696 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6705 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6710 get_sym_h (struct elf_link_hash_entry **hp,
6711 Elf_Internal_Sym **symp,
6713 unsigned char **tls_maskp,
6714 Elf_Internal_Sym **locsymsp,
6715 unsigned long r_symndx,
6718 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6720 if (r_symndx >= symtab_hdr->sh_info)
6722 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6723 struct elf_link_hash_entry *h;
6725 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6726 h = elf_follow_link (h);
6734 if (symsecp != NULL)
6736 asection *symsec = NULL;
6737 if (h->root.type == bfd_link_hash_defined
6738 || h->root.type == bfd_link_hash_defweak)
6739 symsec = h->root.u.def.section;
6743 if (tls_maskp != NULL)
6745 struct ppc_link_hash_entry *eh;
6747 eh = (struct ppc_link_hash_entry *) h;
6748 *tls_maskp = &eh->tls_mask;
6753 Elf_Internal_Sym *sym;
6754 Elf_Internal_Sym *locsyms = *locsymsp;
6756 if (locsyms == NULL)
6758 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6759 if (locsyms == NULL)
6760 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6761 symtab_hdr->sh_info,
6762 0, NULL, NULL, NULL);
6763 if (locsyms == NULL)
6765 *locsymsp = locsyms;
6767 sym = locsyms + r_symndx;
6775 if (symsecp != NULL)
6776 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6778 if (tls_maskp != NULL)
6780 struct got_entry **lgot_ents;
6781 unsigned char *tls_mask;
6784 lgot_ents = elf_local_got_ents (ibfd);
6785 if (lgot_ents != NULL)
6787 struct plt_entry **local_plt = (struct plt_entry **)
6788 (lgot_ents + symtab_hdr->sh_info);
6789 unsigned char *lgot_masks = (unsigned char *)
6790 (local_plt + symtab_hdr->sh_info);
6791 tls_mask = &lgot_masks[r_symndx];
6793 *tls_maskp = tls_mask;
6799 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6800 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6801 type suitable for optimization, and 1 otherwise. */
6804 get_tls_mask (unsigned char **tls_maskp,
6805 unsigned long *toc_symndx,
6806 bfd_vma *toc_addend,
6807 Elf_Internal_Sym **locsymsp,
6808 const Elf_Internal_Rela *rel,
6811 unsigned long r_symndx;
6813 struct elf_link_hash_entry *h;
6814 Elf_Internal_Sym *sym;
6818 r_symndx = ELF64_R_SYM (rel->r_info);
6819 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6822 if ((*tls_maskp != NULL && **tls_maskp != 0)
6824 || ppc64_elf_section_data (sec) == NULL
6825 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6828 /* Look inside a TOC section too. */
6831 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6832 off = h->root.u.def.value;
6835 off = sym->st_value;
6836 off += rel->r_addend;
6837 BFD_ASSERT (off % 8 == 0);
6838 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6839 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6840 if (toc_symndx != NULL)
6841 *toc_symndx = r_symndx;
6842 if (toc_addend != NULL)
6843 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6844 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6846 if ((h == NULL || is_static_defined (h))
6847 && (next_r == -1 || next_r == -2))
6852 /* Find (or create) an entry in the tocsave hash table. */
6854 static struct tocsave_entry *
6855 tocsave_find (struct ppc_link_hash_table *htab,
6856 enum insert_option insert,
6857 Elf_Internal_Sym **local_syms,
6858 const Elf_Internal_Rela *irela,
6861 unsigned long r_indx;
6862 struct elf_link_hash_entry *h;
6863 Elf_Internal_Sym *sym;
6864 struct tocsave_entry ent, *p;
6866 struct tocsave_entry **slot;
6868 r_indx = ELF64_R_SYM (irela->r_info);
6869 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
6871 if (ent.sec == NULL || ent.sec->output_section == NULL)
6873 (*_bfd_error_handler)
6874 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6879 ent.offset = h->root.u.def.value;
6881 ent.offset = sym->st_value;
6882 ent.offset += irela->r_addend;
6884 hash = tocsave_htab_hash (&ent);
6885 slot = ((struct tocsave_entry **)
6886 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
6892 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
6901 /* Adjust all global syms defined in opd sections. In gcc generated
6902 code for the old ABI, these will already have been done. */
6905 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6907 struct ppc_link_hash_entry *eh;
6909 struct _opd_sec_data *opd;
6911 if (h->root.type == bfd_link_hash_indirect)
6914 if (h->root.type != bfd_link_hash_defined
6915 && h->root.type != bfd_link_hash_defweak)
6918 eh = (struct ppc_link_hash_entry *) h;
6919 if (eh->adjust_done)
6922 sym_sec = eh->elf.root.u.def.section;
6923 opd = get_opd_info (sym_sec);
6924 if (opd != NULL && opd->adjust != NULL)
6926 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6929 /* This entry has been deleted. */
6930 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6933 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6934 if (discarded_section (dsec))
6936 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6940 eh->elf.root.u.def.value = 0;
6941 eh->elf.root.u.def.section = dsec;
6944 eh->elf.root.u.def.value += adjust;
6945 eh->adjust_done = 1;
6950 /* Handles decrementing dynamic reloc counts for the reloc specified by
6951 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6952 have already been determined. */
6955 dec_dynrel_count (bfd_vma r_info,
6957 struct bfd_link_info *info,
6958 Elf_Internal_Sym **local_syms,
6959 struct elf_link_hash_entry *h,
6962 enum elf_ppc64_reloc_type r_type;
6963 struct elf_dyn_relocs *p;
6964 struct elf_dyn_relocs **pp;
6966 /* Can this reloc be dynamic? This switch, and later tests here
6967 should be kept in sync with the code in check_relocs. */
6968 r_type = ELF64_R_TYPE (r_info);
6974 case R_PPC64_TPREL16:
6975 case R_PPC64_TPREL16_LO:
6976 case R_PPC64_TPREL16_HI:
6977 case R_PPC64_TPREL16_HA:
6978 case R_PPC64_TPREL16_DS:
6979 case R_PPC64_TPREL16_LO_DS:
6980 case R_PPC64_TPREL16_HIGHER:
6981 case R_PPC64_TPREL16_HIGHERA:
6982 case R_PPC64_TPREL16_HIGHEST:
6983 case R_PPC64_TPREL16_HIGHESTA:
6987 case R_PPC64_TPREL64:
6988 case R_PPC64_DTPMOD64:
6989 case R_PPC64_DTPREL64:
6990 case R_PPC64_ADDR64:
6994 case R_PPC64_ADDR14:
6995 case R_PPC64_ADDR14_BRNTAKEN:
6996 case R_PPC64_ADDR14_BRTAKEN:
6997 case R_PPC64_ADDR16:
6998 case R_PPC64_ADDR16_DS:
6999 case R_PPC64_ADDR16_HA:
7000 case R_PPC64_ADDR16_HI:
7001 case R_PPC64_ADDR16_HIGHER:
7002 case R_PPC64_ADDR16_HIGHERA:
7003 case R_PPC64_ADDR16_HIGHEST:
7004 case R_PPC64_ADDR16_HIGHESTA:
7005 case R_PPC64_ADDR16_LO:
7006 case R_PPC64_ADDR16_LO_DS:
7007 case R_PPC64_ADDR24:
7008 case R_PPC64_ADDR32:
7009 case R_PPC64_UADDR16:
7010 case R_PPC64_UADDR32:
7011 case R_PPC64_UADDR64:
7016 if (local_syms != NULL)
7018 unsigned long r_symndx;
7019 Elf_Internal_Sym *sym;
7020 bfd *ibfd = sec->owner;
7022 r_symndx = ELF64_R_SYM (r_info);
7023 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7028 && (must_be_dyn_reloc (info, r_type)
7031 || h->root.type == bfd_link_hash_defweak
7032 || !h->def_regular))))
7033 || (ELIMINATE_COPY_RELOCS
7036 && (h->root.type == bfd_link_hash_defweak
7037 || !h->def_regular)))
7043 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7046 if (sym_sec != NULL)
7048 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
7049 pp = (struct elf_dyn_relocs **) vpp;
7053 void *vpp = &elf_section_data (sec)->local_dynrel;
7054 pp = (struct elf_dyn_relocs **) vpp;
7057 /* elf_gc_sweep may have already removed all dyn relocs associated
7058 with local syms for a given section. Don't report a dynreloc
7064 while ((p = *pp) != NULL)
7068 if (!must_be_dyn_reloc (info, r_type))
7078 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7080 bfd_set_error (bfd_error_bad_value);
7084 /* Remove unused Official Procedure Descriptor entries. Currently we
7085 only remove those associated with functions in discarded link-once
7086 sections, or weakly defined functions that have been overridden. It
7087 would be possible to remove many more entries for statically linked
7091 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7094 bfd_boolean some_edited = FALSE;
7095 asection *need_pad = NULL;
7097 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7100 Elf_Internal_Rela *relstart, *rel, *relend;
7101 Elf_Internal_Shdr *symtab_hdr;
7102 Elf_Internal_Sym *local_syms;
7104 struct _opd_sec_data *opd;
7105 bfd_boolean need_edit, add_aux_fields;
7106 bfd_size_type cnt_16b = 0;
7108 if (!is_ppc64_elf (ibfd))
7111 sec = bfd_get_section_by_name (ibfd, ".opd");
7112 if (sec == NULL || sec->size == 0)
7115 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7118 if (sec->output_section == bfd_abs_section_ptr)
7121 /* Look through the section relocs. */
7122 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7126 symtab_hdr = &elf_symtab_hdr (ibfd);
7128 /* Read the relocations. */
7129 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7131 if (relstart == NULL)
7134 /* First run through the relocs to check they are sane, and to
7135 determine whether we need to edit this opd section. */
7139 relend = relstart + sec->reloc_count;
7140 for (rel = relstart; rel < relend; )
7142 enum elf_ppc64_reloc_type r_type;
7143 unsigned long r_symndx;
7145 struct elf_link_hash_entry *h;
7146 Elf_Internal_Sym *sym;
7148 /* .opd contains a regular array of 16 or 24 byte entries. We're
7149 only interested in the reloc pointing to a function entry
7151 if (rel->r_offset != offset
7152 || rel + 1 >= relend
7153 || (rel + 1)->r_offset != offset + 8)
7155 /* If someone messes with .opd alignment then after a
7156 "ld -r" we might have padding in the middle of .opd.
7157 Also, there's nothing to prevent someone putting
7158 something silly in .opd with the assembler. No .opd
7159 optimization for them! */
7161 (*_bfd_error_handler)
7162 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7167 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7168 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7170 (*_bfd_error_handler)
7171 (_("%B: unexpected reloc type %u in .opd section"),
7177 r_symndx = ELF64_R_SYM (rel->r_info);
7178 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7182 if (sym_sec == NULL || sym_sec->owner == NULL)
7184 const char *sym_name;
7186 sym_name = h->root.root.string;
7188 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7191 (*_bfd_error_handler)
7192 (_("%B: undefined sym `%s' in .opd section"),
7198 /* opd entries are always for functions defined in the
7199 current input bfd. If the symbol isn't defined in the
7200 input bfd, then we won't be using the function in this
7201 bfd; It must be defined in a linkonce section in another
7202 bfd, or is weak. It's also possible that we are
7203 discarding the function due to a linker script /DISCARD/,
7204 which we test for via the output_section. */
7205 if (sym_sec->owner != ibfd
7206 || sym_sec->output_section == bfd_abs_section_ptr)
7211 || (rel + 1 == relend && rel->r_offset == offset + 16))
7213 if (sec->size == offset + 24)
7218 if (rel == relend && sec->size == offset + 16)
7226 if (rel->r_offset == offset + 24)
7228 else if (rel->r_offset != offset + 16)
7230 else if (rel + 1 < relend
7231 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7232 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7237 else if (rel + 2 < relend
7238 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7239 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7248 add_aux_fields = non_overlapping && cnt_16b > 0;
7250 if (need_edit || add_aux_fields)
7252 Elf_Internal_Rela *write_rel;
7253 Elf_Internal_Shdr *rel_hdr;
7254 bfd_byte *rptr, *wptr;
7255 bfd_byte *new_contents;
7260 new_contents = NULL;
7261 amt = sec->size * sizeof (long) / 8;
7262 opd = &ppc64_elf_section_data (sec)->u.opd;
7263 opd->adjust = bfd_zalloc (sec->owner, amt);
7264 if (opd->adjust == NULL)
7266 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7268 /* This seems a waste of time as input .opd sections are all
7269 zeros as generated by gcc, but I suppose there's no reason
7270 this will always be so. We might start putting something in
7271 the third word of .opd entries. */
7272 if ((sec->flags & SEC_IN_MEMORY) == 0)
7275 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7280 if (local_syms != NULL
7281 && symtab_hdr->contents != (unsigned char *) local_syms)
7283 if (elf_section_data (sec)->relocs != relstart)
7287 sec->contents = loc;
7288 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7291 elf_section_data (sec)->relocs = relstart;
7293 new_contents = sec->contents;
7296 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7297 if (new_contents == NULL)
7301 wptr = new_contents;
7302 rptr = sec->contents;
7304 write_rel = relstart;
7308 for (rel = relstart; rel < relend; rel++)
7310 unsigned long r_symndx;
7312 struct elf_link_hash_entry *h;
7313 Elf_Internal_Sym *sym;
7315 r_symndx = ELF64_R_SYM (rel->r_info);
7316 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7320 if (rel->r_offset == offset)
7322 struct ppc_link_hash_entry *fdh = NULL;
7324 /* See if the .opd entry is full 24 byte or
7325 16 byte (with fd_aux entry overlapped with next
7328 if ((rel + 2 == relend && sec->size == offset + 16)
7329 || (rel + 3 < relend
7330 && rel[2].r_offset == offset + 16
7331 && rel[3].r_offset == offset + 24
7332 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7333 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7337 && h->root.root.string[0] == '.')
7339 struct ppc_link_hash_table *htab;
7341 htab = ppc_hash_table (info);
7343 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7346 && fdh->elf.root.type != bfd_link_hash_defined
7347 && fdh->elf.root.type != bfd_link_hash_defweak)
7351 skip = (sym_sec->owner != ibfd
7352 || sym_sec->output_section == bfd_abs_section_ptr);
7355 if (fdh != NULL && sym_sec->owner == ibfd)
7357 /* Arrange for the function descriptor sym
7359 fdh->elf.root.u.def.value = 0;
7360 fdh->elf.root.u.def.section = sym_sec;
7362 opd->adjust[rel->r_offset / 8] = -1;
7366 /* We'll be keeping this opd entry. */
7370 /* Redefine the function descriptor symbol to
7371 this location in the opd section. It is
7372 necessary to update the value here rather
7373 than using an array of adjustments as we do
7374 for local symbols, because various places
7375 in the generic ELF code use the value
7376 stored in u.def.value. */
7377 fdh->elf.root.u.def.value = wptr - new_contents;
7378 fdh->adjust_done = 1;
7381 /* Local syms are a bit tricky. We could
7382 tweak them as they can be cached, but
7383 we'd need to look through the local syms
7384 for the function descriptor sym which we
7385 don't have at the moment. So keep an
7386 array of adjustments. */
7387 opd->adjust[rel->r_offset / 8]
7388 = (wptr - new_contents) - (rptr - sec->contents);
7391 memcpy (wptr, rptr, opd_ent_size);
7392 wptr += opd_ent_size;
7393 if (add_aux_fields && opd_ent_size == 16)
7395 memset (wptr, '\0', 8);
7399 rptr += opd_ent_size;
7400 offset += opd_ent_size;
7406 && !info->relocatable
7407 && !dec_dynrel_count (rel->r_info, sec, info,
7413 /* We need to adjust any reloc offsets to point to the
7414 new opd entries. While we're at it, we may as well
7415 remove redundant relocs. */
7416 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7417 if (write_rel != rel)
7418 memcpy (write_rel, rel, sizeof (*rel));
7423 sec->size = wptr - new_contents;
7424 sec->reloc_count = write_rel - relstart;
7427 free (sec->contents);
7428 sec->contents = new_contents;
7431 /* Fudge the header size too, as this is used later in
7432 elf_bfd_final_link if we are emitting relocs. */
7433 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7434 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7437 else if (elf_section_data (sec)->relocs != relstart)
7440 if (local_syms != NULL
7441 && symtab_hdr->contents != (unsigned char *) local_syms)
7443 if (!info->keep_memory)
7446 symtab_hdr->contents = (unsigned char *) local_syms;
7451 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7453 /* If we are doing a final link and the last .opd entry is just 16 byte
7454 long, add a 8 byte padding after it. */
7455 if (need_pad != NULL && !info->relocatable)
7459 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7461 BFD_ASSERT (need_pad->size > 0);
7463 p = bfd_malloc (need_pad->size + 8);
7467 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7468 p, 0, need_pad->size))
7471 need_pad->contents = p;
7472 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7476 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7480 need_pad->contents = p;
7483 memset (need_pad->contents + need_pad->size, 0, 8);
7484 need_pad->size += 8;
7490 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7493 ppc64_elf_tls_setup (struct bfd_link_info *info,
7494 int no_tls_get_addr_opt,
7497 struct ppc_link_hash_table *htab;
7499 htab = ppc_hash_table (info);
7504 htab->do_multi_toc = 0;
7505 else if (!htab->do_multi_toc)
7508 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7509 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7510 FALSE, FALSE, TRUE));
7511 /* Move dynamic linking info to the function descriptor sym. */
7512 if (htab->tls_get_addr != NULL)
7513 func_desc_adjust (&htab->tls_get_addr->elf, info);
7514 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7515 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7516 FALSE, FALSE, TRUE));
7517 if (!no_tls_get_addr_opt)
7519 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7521 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7522 FALSE, FALSE, TRUE);
7524 func_desc_adjust (opt, info);
7525 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7526 FALSE, FALSE, TRUE);
7528 && (opt_fd->root.type == bfd_link_hash_defined
7529 || opt_fd->root.type == bfd_link_hash_defweak))
7531 /* If glibc supports an optimized __tls_get_addr call stub,
7532 signalled by the presence of __tls_get_addr_opt, and we'll
7533 be calling __tls_get_addr via a plt call stub, then
7534 make __tls_get_addr point to __tls_get_addr_opt. */
7535 tga_fd = &htab->tls_get_addr_fd->elf;
7536 if (htab->elf.dynamic_sections_created
7538 && (tga_fd->type == STT_FUNC
7539 || tga_fd->needs_plt)
7540 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7541 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7542 && tga_fd->root.type == bfd_link_hash_undefweak)))
7544 struct plt_entry *ent;
7546 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7547 if (ent->plt.refcount > 0)
7551 tga_fd->root.type = bfd_link_hash_indirect;
7552 tga_fd->root.u.i.link = &opt_fd->root;
7553 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7554 if (opt_fd->dynindx != -1)
7556 /* Use __tls_get_addr_opt in dynamic relocations. */
7557 opt_fd->dynindx = -1;
7558 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7559 opt_fd->dynstr_index);
7560 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7563 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7564 tga = &htab->tls_get_addr->elf;
7565 if (opt != NULL && tga != NULL)
7567 tga->root.type = bfd_link_hash_indirect;
7568 tga->root.u.i.link = &opt->root;
7569 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7570 _bfd_elf_link_hash_hide_symbol (info, opt,
7572 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7574 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7575 htab->tls_get_addr_fd->is_func_descriptor = 1;
7576 if (htab->tls_get_addr != NULL)
7578 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7579 htab->tls_get_addr->is_func = 1;
7585 no_tls_get_addr_opt = TRUE;
7587 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7588 return _bfd_elf_tls_setup (info->output_bfd, info);
7591 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7595 branch_reloc_hash_match (const bfd *ibfd,
7596 const Elf_Internal_Rela *rel,
7597 const struct ppc_link_hash_entry *hash1,
7598 const struct ppc_link_hash_entry *hash2)
7600 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7601 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7602 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7604 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7606 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7607 struct elf_link_hash_entry *h;
7609 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7610 h = elf_follow_link (h);
7611 if (h == &hash1->elf || h == &hash2->elf)
7617 /* Run through all the TLS relocs looking for optimization
7618 opportunities. The linker has been hacked (see ppc64elf.em) to do
7619 a preliminary section layout so that we know the TLS segment
7620 offsets. We can't optimize earlier because some optimizations need
7621 to know the tp offset, and we need to optimize before allocating
7622 dynamic relocations. */
7625 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7629 struct ppc_link_hash_table *htab;
7630 unsigned char *toc_ref;
7633 if (info->relocatable || !info->executable)
7636 htab = ppc_hash_table (info);
7640 /* Make two passes over the relocs. On the first pass, mark toc
7641 entries involved with tls relocs, and check that tls relocs
7642 involved in setting up a tls_get_addr call are indeed followed by
7643 such a call. If they are not, we can't do any tls optimization.
7644 On the second pass twiddle tls_mask flags to notify
7645 relocate_section that optimization can be done, and adjust got
7646 and plt refcounts. */
7648 for (pass = 0; pass < 2; ++pass)
7649 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7651 Elf_Internal_Sym *locsyms = NULL;
7652 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7654 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7655 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7657 Elf_Internal_Rela *relstart, *rel, *relend;
7658 bfd_boolean found_tls_get_addr_arg = 0;
7660 /* Read the relocations. */
7661 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7663 if (relstart == NULL)
7666 relend = relstart + sec->reloc_count;
7667 for (rel = relstart; rel < relend; rel++)
7669 enum elf_ppc64_reloc_type r_type;
7670 unsigned long r_symndx;
7671 struct elf_link_hash_entry *h;
7672 Elf_Internal_Sym *sym;
7674 unsigned char *tls_mask;
7675 unsigned char tls_set, tls_clear, tls_type = 0;
7677 bfd_boolean ok_tprel, is_local;
7678 long toc_ref_index = 0;
7679 int expecting_tls_get_addr = 0;
7680 bfd_boolean ret = FALSE;
7682 r_symndx = ELF64_R_SYM (rel->r_info);
7683 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7687 if (elf_section_data (sec)->relocs != relstart)
7689 if (toc_ref != NULL)
7692 && (elf_symtab_hdr (ibfd).contents
7693 != (unsigned char *) locsyms))
7700 if (h->root.type == bfd_link_hash_defined
7701 || h->root.type == bfd_link_hash_defweak)
7702 value = h->root.u.def.value;
7703 else if (h->root.type == bfd_link_hash_undefweak)
7707 found_tls_get_addr_arg = 0;
7712 /* Symbols referenced by TLS relocs must be of type
7713 STT_TLS. So no need for .opd local sym adjust. */
7714 value = sym->st_value;
7723 && h->root.type == bfd_link_hash_undefweak)
7727 value += sym_sec->output_offset;
7728 value += sym_sec->output_section->vma;
7729 value -= htab->elf.tls_sec->vma;
7730 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7731 < (bfd_vma) 1 << 32);
7735 r_type = ELF64_R_TYPE (rel->r_info);
7736 /* If this section has old-style __tls_get_addr calls
7737 without marker relocs, then check that each
7738 __tls_get_addr call reloc is preceded by a reloc
7739 that conceivably belongs to the __tls_get_addr arg
7740 setup insn. If we don't find matching arg setup
7741 relocs, don't do any tls optimization. */
7743 && sec->has_tls_get_addr_call
7745 && (h == &htab->tls_get_addr->elf
7746 || h == &htab->tls_get_addr_fd->elf)
7747 && !found_tls_get_addr_arg
7748 && is_branch_reloc (r_type))
7750 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
7751 "TLS optimization disabled\n"),
7752 ibfd, sec, rel->r_offset);
7757 found_tls_get_addr_arg = 0;
7760 case R_PPC64_GOT_TLSLD16:
7761 case R_PPC64_GOT_TLSLD16_LO:
7762 expecting_tls_get_addr = 1;
7763 found_tls_get_addr_arg = 1;
7766 case R_PPC64_GOT_TLSLD16_HI:
7767 case R_PPC64_GOT_TLSLD16_HA:
7768 /* These relocs should never be against a symbol
7769 defined in a shared lib. Leave them alone if
7770 that turns out to be the case. */
7777 tls_type = TLS_TLS | TLS_LD;
7780 case R_PPC64_GOT_TLSGD16:
7781 case R_PPC64_GOT_TLSGD16_LO:
7782 expecting_tls_get_addr = 1;
7783 found_tls_get_addr_arg = 1;
7786 case R_PPC64_GOT_TLSGD16_HI:
7787 case R_PPC64_GOT_TLSGD16_HA:
7793 tls_set = TLS_TLS | TLS_TPRELGD;
7795 tls_type = TLS_TLS | TLS_GD;
7798 case R_PPC64_GOT_TPREL16_DS:
7799 case R_PPC64_GOT_TPREL16_LO_DS:
7800 case R_PPC64_GOT_TPREL16_HI:
7801 case R_PPC64_GOT_TPREL16_HA:
7806 tls_clear = TLS_TPREL;
7807 tls_type = TLS_TLS | TLS_TPREL;
7814 found_tls_get_addr_arg = 1;
7819 case R_PPC64_TOC16_LO:
7820 if (sym_sec == NULL || sym_sec != toc)
7823 /* Mark this toc entry as referenced by a TLS
7824 code sequence. We can do that now in the
7825 case of R_PPC64_TLS, and after checking for
7826 tls_get_addr for the TOC16 relocs. */
7827 if (toc_ref == NULL)
7828 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7829 if (toc_ref == NULL)
7833 value = h->root.u.def.value;
7835 value = sym->st_value;
7836 value += rel->r_addend;
7837 BFD_ASSERT (value < toc->size && value % 8 == 0);
7838 toc_ref_index = (value + toc->output_offset) / 8;
7839 if (r_type == R_PPC64_TLS
7840 || r_type == R_PPC64_TLSGD
7841 || r_type == R_PPC64_TLSLD)
7843 toc_ref[toc_ref_index] = 1;
7847 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7852 expecting_tls_get_addr = 2;
7855 case R_PPC64_TPREL64:
7859 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7864 tls_set = TLS_EXPLICIT;
7865 tls_clear = TLS_TPREL;
7870 case R_PPC64_DTPMOD64:
7874 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7876 if (rel + 1 < relend
7878 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7879 && rel[1].r_offset == rel->r_offset + 8)
7883 tls_set = TLS_EXPLICIT | TLS_GD;
7886 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7895 tls_set = TLS_EXPLICIT;
7906 if (!expecting_tls_get_addr
7907 || !sec->has_tls_get_addr_call)
7910 if (rel + 1 < relend
7911 && branch_reloc_hash_match (ibfd, rel + 1,
7913 htab->tls_get_addr_fd))
7915 if (expecting_tls_get_addr == 2)
7917 /* Check for toc tls entries. */
7918 unsigned char *toc_tls;
7921 retval = get_tls_mask (&toc_tls, NULL, NULL,
7926 if (toc_tls != NULL)
7928 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7929 found_tls_get_addr_arg = 1;
7931 toc_ref[toc_ref_index] = 1;
7937 if (expecting_tls_get_addr != 1)
7940 /* Uh oh, we didn't find the expected call. We
7941 could just mark this symbol to exclude it
7942 from tls optimization but it's safer to skip
7943 the entire optimization. */
7944 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
7945 "TLS optimization disabled\n"),
7946 ibfd, sec, rel->r_offset);
7951 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7953 struct plt_entry *ent;
7954 for (ent = htab->tls_get_addr->elf.plt.plist;
7957 if (ent->addend == 0)
7959 if (ent->plt.refcount > 0)
7961 ent->plt.refcount -= 1;
7962 expecting_tls_get_addr = 0;
7968 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7970 struct plt_entry *ent;
7971 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7974 if (ent->addend == 0)
7976 if (ent->plt.refcount > 0)
7977 ent->plt.refcount -= 1;
7985 if ((tls_set & TLS_EXPLICIT) == 0)
7987 struct got_entry *ent;
7989 /* Adjust got entry for this reloc. */
7993 ent = elf_local_got_ents (ibfd)[r_symndx];
7995 for (; ent != NULL; ent = ent->next)
7996 if (ent->addend == rel->r_addend
7997 && ent->owner == ibfd
7998 && ent->tls_type == tls_type)
8005 /* We managed to get rid of a got entry. */
8006 if (ent->got.refcount > 0)
8007 ent->got.refcount -= 1;
8012 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8013 we'll lose one or two dyn relocs. */
8014 if (!dec_dynrel_count (rel->r_info, sec, info,
8018 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8020 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8026 *tls_mask |= tls_set;
8027 *tls_mask &= ~tls_clear;
8030 if (elf_section_data (sec)->relocs != relstart)
8035 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8037 if (!info->keep_memory)
8040 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8044 if (toc_ref != NULL)
8049 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8050 the values of any global symbols in a toc section that has been
8051 edited. Globals in toc sections should be a rarity, so this function
8052 sets a flag if any are found in toc sections other than the one just
8053 edited, so that futher hash table traversals can be avoided. */
8055 struct adjust_toc_info
8058 unsigned long *skip;
8059 bfd_boolean global_toc_syms;
8062 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8065 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8067 struct ppc_link_hash_entry *eh;
8068 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8071 if (h->root.type != bfd_link_hash_defined
8072 && h->root.type != bfd_link_hash_defweak)
8075 eh = (struct ppc_link_hash_entry *) h;
8076 if (eh->adjust_done)
8079 if (eh->elf.root.u.def.section == toc_inf->toc)
8081 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8082 i = toc_inf->toc->rawsize >> 3;
8084 i = eh->elf.root.u.def.value >> 3;
8086 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8088 (*_bfd_error_handler)
8089 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8092 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8093 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8096 eh->elf.root.u.def.value -= toc_inf->skip[i];
8097 eh->adjust_done = 1;
8099 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8100 toc_inf->global_toc_syms = TRUE;
8105 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8108 ok_lo_toc_insn (unsigned int insn)
8110 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8111 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8112 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8113 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8114 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8115 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8116 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8117 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8118 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8119 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8120 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8121 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8122 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8123 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8124 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8126 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8127 && ((insn & 3) == 0 || (insn & 3) == 3))
8128 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8131 /* Examine all relocs referencing .toc sections in order to remove
8132 unused .toc entries. */
8135 ppc64_elf_edit_toc (struct bfd_link_info *info)
8138 struct adjust_toc_info toc_inf;
8139 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8141 htab->do_toc_opt = 1;
8142 toc_inf.global_toc_syms = TRUE;
8143 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8145 asection *toc, *sec;
8146 Elf_Internal_Shdr *symtab_hdr;
8147 Elf_Internal_Sym *local_syms;
8148 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8149 unsigned long *skip, *drop;
8150 unsigned char *used;
8151 unsigned char *keep, last, some_unused;
8153 if (!is_ppc64_elf (ibfd))
8156 toc = bfd_get_section_by_name (ibfd, ".toc");
8159 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8160 || discarded_section (toc))
8165 symtab_hdr = &elf_symtab_hdr (ibfd);
8167 /* Look at sections dropped from the final link. */
8170 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8172 if (sec->reloc_count == 0
8173 || !discarded_section (sec)
8174 || get_opd_info (sec)
8175 || (sec->flags & SEC_ALLOC) == 0
8176 || (sec->flags & SEC_DEBUGGING) != 0)
8179 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8180 if (relstart == NULL)
8183 /* Run through the relocs to see which toc entries might be
8185 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8187 enum elf_ppc64_reloc_type r_type;
8188 unsigned long r_symndx;
8190 struct elf_link_hash_entry *h;
8191 Elf_Internal_Sym *sym;
8194 r_type = ELF64_R_TYPE (rel->r_info);
8201 case R_PPC64_TOC16_LO:
8202 case R_PPC64_TOC16_HI:
8203 case R_PPC64_TOC16_HA:
8204 case R_PPC64_TOC16_DS:
8205 case R_PPC64_TOC16_LO_DS:
8209 r_symndx = ELF64_R_SYM (rel->r_info);
8210 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8218 val = h->root.u.def.value;
8220 val = sym->st_value;
8221 val += rel->r_addend;
8223 if (val >= toc->size)
8226 /* Anything in the toc ought to be aligned to 8 bytes.
8227 If not, don't mark as unused. */
8233 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8238 skip[val >> 3] = ref_from_discarded;
8241 if (elf_section_data (sec)->relocs != relstart)
8245 /* For largetoc loads of address constants, we can convert
8246 . addis rx,2,addr@got@ha
8247 . ld ry,addr@got@l(rx)
8249 . addis rx,2,addr@toc@ha
8250 . addi ry,rx,addr@toc@l
8251 when addr is within 2G of the toc pointer. This then means
8252 that the word storing "addr" in the toc is no longer needed. */
8254 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8255 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8256 && toc->reloc_count != 0)
8258 /* Read toc relocs. */
8259 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8261 if (toc_relocs == NULL)
8264 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8266 enum elf_ppc64_reloc_type r_type;
8267 unsigned long r_symndx;
8269 struct elf_link_hash_entry *h;
8270 Elf_Internal_Sym *sym;
8273 r_type = ELF64_R_TYPE (rel->r_info);
8274 if (r_type != R_PPC64_ADDR64)
8277 r_symndx = ELF64_R_SYM (rel->r_info);
8278 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8283 || discarded_section (sym_sec))
8286 if (!SYMBOL_CALLS_LOCAL (info, h))
8291 if (h->type == STT_GNU_IFUNC)
8293 val = h->root.u.def.value;
8297 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8299 val = sym->st_value;
8301 val += rel->r_addend;
8302 val += sym_sec->output_section->vma + sym_sec->output_offset;
8304 /* We don't yet know the exact toc pointer value, but we
8305 know it will be somewhere in the toc section. Don't
8306 optimize if the difference from any possible toc
8307 pointer is outside [ff..f80008000, 7fff7fff]. */
8308 addr = toc->output_section->vma + TOC_BASE_OFF;
8309 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8312 addr = toc->output_section->vma + toc->output_section->rawsize;
8313 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8318 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8323 skip[rel->r_offset >> 3]
8324 |= can_optimize | ((rel - toc_relocs) << 2);
8331 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8335 if (local_syms != NULL
8336 && symtab_hdr->contents != (unsigned char *) local_syms)
8340 && elf_section_data (sec)->relocs != relstart)
8342 if (toc_relocs != NULL
8343 && elf_section_data (toc)->relocs != toc_relocs)
8350 /* Now check all kept sections that might reference the toc.
8351 Check the toc itself last. */
8352 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8355 sec = (sec == toc ? NULL
8356 : sec->next == NULL ? toc
8357 : sec->next == toc && toc->next ? toc->next
8362 if (sec->reloc_count == 0
8363 || discarded_section (sec)
8364 || get_opd_info (sec)
8365 || (sec->flags & SEC_ALLOC) == 0
8366 || (sec->flags & SEC_DEBUGGING) != 0)
8369 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8371 if (relstart == NULL)
8374 /* Mark toc entries referenced as used. */
8378 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8380 enum elf_ppc64_reloc_type r_type;
8381 unsigned long r_symndx;
8383 struct elf_link_hash_entry *h;
8384 Elf_Internal_Sym *sym;
8386 enum {no_check, check_lo, check_ha} insn_check;
8388 r_type = ELF64_R_TYPE (rel->r_info);
8392 insn_check = no_check;
8395 case R_PPC64_GOT_TLSLD16_HA:
8396 case R_PPC64_GOT_TLSGD16_HA:
8397 case R_PPC64_GOT_TPREL16_HA:
8398 case R_PPC64_GOT_DTPREL16_HA:
8399 case R_PPC64_GOT16_HA:
8400 case R_PPC64_TOC16_HA:
8401 insn_check = check_ha;
8404 case R_PPC64_GOT_TLSLD16_LO:
8405 case R_PPC64_GOT_TLSGD16_LO:
8406 case R_PPC64_GOT_TPREL16_LO_DS:
8407 case R_PPC64_GOT_DTPREL16_LO_DS:
8408 case R_PPC64_GOT16_LO:
8409 case R_PPC64_GOT16_LO_DS:
8410 case R_PPC64_TOC16_LO:
8411 case R_PPC64_TOC16_LO_DS:
8412 insn_check = check_lo;
8416 if (insn_check != no_check)
8418 bfd_vma off = rel->r_offset & ~3;
8419 unsigned char buf[4];
8422 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8427 insn = bfd_get_32 (ibfd, buf);
8428 if (insn_check == check_lo
8429 ? !ok_lo_toc_insn (insn)
8430 : ((insn & ((0x3f << 26) | 0x1f << 16))
8431 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8435 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8436 sprintf (str, "%#08x", insn);
8437 info->callbacks->einfo
8438 (_("%P: %H: toc optimization is not supported for"
8439 " %s instruction.\n"),
8440 ibfd, sec, rel->r_offset & ~3, str);
8447 case R_PPC64_TOC16_LO:
8448 case R_PPC64_TOC16_HI:
8449 case R_PPC64_TOC16_HA:
8450 case R_PPC64_TOC16_DS:
8451 case R_PPC64_TOC16_LO_DS:
8452 /* In case we're taking addresses of toc entries. */
8453 case R_PPC64_ADDR64:
8460 r_symndx = ELF64_R_SYM (rel->r_info);
8461 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8472 val = h->root.u.def.value;
8474 val = sym->st_value;
8475 val += rel->r_addend;
8477 if (val >= toc->size)
8480 if ((skip[val >> 3] & can_optimize) != 0)
8487 case R_PPC64_TOC16_HA:
8490 case R_PPC64_TOC16_LO_DS:
8491 off = rel->r_offset;
8492 off += (bfd_big_endian (ibfd) ? -2 : 3);
8493 if (!bfd_get_section_contents (ibfd, sec, &opc,
8499 if ((opc & (0x3f << 2)) == (58u << 2))
8504 /* Wrong sort of reloc, or not a ld. We may
8505 as well clear ref_from_discarded too. */
8512 /* For the toc section, we only mark as used if this
8513 entry itself isn't unused. */
8514 else if ((used[rel->r_offset >> 3]
8515 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
8518 /* Do all the relocs again, to catch reference
8527 if (elf_section_data (sec)->relocs != relstart)
8531 /* Merge the used and skip arrays. Assume that TOC
8532 doublewords not appearing as either used or unused belong
8533 to to an entry more than one doubleword in size. */
8534 for (drop = skip, keep = used, last = 0, some_unused = 0;
8535 drop < skip + (toc->size + 7) / 8;
8540 *drop &= ~ref_from_discarded;
8541 if ((*drop & can_optimize) != 0)
8545 else if ((*drop & ref_from_discarded) != 0)
8548 last = ref_from_discarded;
8558 bfd_byte *contents, *src;
8560 Elf_Internal_Sym *sym;
8561 bfd_boolean local_toc_syms = FALSE;
8563 /* Shuffle the toc contents, and at the same time convert the
8564 skip array from booleans into offsets. */
8565 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8568 elf_section_data (toc)->this_hdr.contents = contents;
8570 for (src = contents, off = 0, drop = skip;
8571 src < contents + toc->size;
8574 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8579 memcpy (src - off, src, 8);
8583 toc->rawsize = toc->size;
8584 toc->size = src - contents - off;
8586 /* Adjust addends for relocs against the toc section sym,
8587 and optimize any accesses we can. */
8588 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8590 if (sec->reloc_count == 0
8591 || discarded_section (sec))
8594 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8596 if (relstart == NULL)
8599 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8601 enum elf_ppc64_reloc_type r_type;
8602 unsigned long r_symndx;
8604 struct elf_link_hash_entry *h;
8607 r_type = ELF64_R_TYPE (rel->r_info);
8614 case R_PPC64_TOC16_LO:
8615 case R_PPC64_TOC16_HI:
8616 case R_PPC64_TOC16_HA:
8617 case R_PPC64_TOC16_DS:
8618 case R_PPC64_TOC16_LO_DS:
8619 case R_PPC64_ADDR64:
8623 r_symndx = ELF64_R_SYM (rel->r_info);
8624 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8632 val = h->root.u.def.value;
8635 val = sym->st_value;
8637 local_toc_syms = TRUE;
8640 val += rel->r_addend;
8642 if (val > toc->rawsize)
8644 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8646 else if ((skip[val >> 3] & can_optimize) != 0)
8648 Elf_Internal_Rela *tocrel
8649 = toc_relocs + (skip[val >> 3] >> 2);
8650 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8654 case R_PPC64_TOC16_HA:
8655 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8658 case R_PPC64_TOC16_LO_DS:
8659 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8663 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8665 info->callbacks->einfo
8666 (_("%P: %H: %s relocation references "
8667 "optimized away TOC entry\n"),
8668 ibfd, sec, rel->r_offset,
8669 ppc64_elf_howto_table[r_type]->name);
8670 bfd_set_error (bfd_error_bad_value);
8673 rel->r_addend = tocrel->r_addend;
8674 elf_section_data (sec)->relocs = relstart;
8678 if (h != NULL || sym->st_value != 0)
8681 rel->r_addend -= skip[val >> 3];
8682 elf_section_data (sec)->relocs = relstart;
8685 if (elf_section_data (sec)->relocs != relstart)
8689 /* We shouldn't have local or global symbols defined in the TOC,
8690 but handle them anyway. */
8691 if (local_syms != NULL)
8692 for (sym = local_syms;
8693 sym < local_syms + symtab_hdr->sh_info;
8695 if (sym->st_value != 0
8696 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8700 if (sym->st_value > toc->rawsize)
8701 i = toc->rawsize >> 3;
8703 i = sym->st_value >> 3;
8705 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8708 (*_bfd_error_handler)
8709 (_("%s defined on removed toc entry"),
8710 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8713 while ((skip[i] & (ref_from_discarded | can_optimize)));
8714 sym->st_value = (bfd_vma) i << 3;
8717 sym->st_value -= skip[i];
8718 symtab_hdr->contents = (unsigned char *) local_syms;
8721 /* Adjust any global syms defined in this toc input section. */
8722 if (toc_inf.global_toc_syms)
8725 toc_inf.skip = skip;
8726 toc_inf.global_toc_syms = FALSE;
8727 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8731 if (toc->reloc_count != 0)
8733 Elf_Internal_Shdr *rel_hdr;
8734 Elf_Internal_Rela *wrel;
8737 /* Remove unused toc relocs, and adjust those we keep. */
8738 if (toc_relocs == NULL)
8739 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8741 if (toc_relocs == NULL)
8745 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8746 if ((skip[rel->r_offset >> 3]
8747 & (ref_from_discarded | can_optimize)) == 0)
8749 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8750 wrel->r_info = rel->r_info;
8751 wrel->r_addend = rel->r_addend;
8754 else if (!dec_dynrel_count (rel->r_info, toc, info,
8755 &local_syms, NULL, NULL))
8758 elf_section_data (toc)->relocs = toc_relocs;
8759 toc->reloc_count = wrel - toc_relocs;
8760 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8761 sz = rel_hdr->sh_entsize;
8762 rel_hdr->sh_size = toc->reloc_count * sz;
8765 else if (toc_relocs != NULL
8766 && elf_section_data (toc)->relocs != toc_relocs)
8769 if (local_syms != NULL
8770 && symtab_hdr->contents != (unsigned char *) local_syms)
8772 if (!info->keep_memory)
8775 symtab_hdr->contents = (unsigned char *) local_syms;
8783 /* Return true iff input section I references the TOC using
8784 instructions limited to +/-32k offsets. */
8787 ppc64_elf_has_small_toc_reloc (asection *i)
8789 return (is_ppc64_elf (i->owner)
8790 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8793 /* Allocate space for one GOT entry. */
8796 allocate_got (struct elf_link_hash_entry *h,
8797 struct bfd_link_info *info,
8798 struct got_entry *gent)
8800 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8802 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8803 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8805 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8806 ? 2 : 1) * sizeof (Elf64_External_Rela);
8807 asection *got = ppc64_elf_tdata (gent->owner)->got;
8809 gent->got.offset = got->size;
8810 got->size += entsize;
8812 dyn = htab->elf.dynamic_sections_created;
8814 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8815 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8816 || h->root.type != bfd_link_hash_undefweak))
8818 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8819 relgot->size += rentsize;
8821 else if (h->type == STT_GNU_IFUNC)
8823 asection *relgot = htab->reliplt;
8824 relgot->size += rentsize;
8825 htab->got_reli_size += rentsize;
8829 /* This function merges got entries in the same toc group. */
8832 merge_got_entries (struct got_entry **pent)
8834 struct got_entry *ent, *ent2;
8836 for (ent = *pent; ent != NULL; ent = ent->next)
8837 if (!ent->is_indirect)
8838 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8839 if (!ent2->is_indirect
8840 && ent2->addend == ent->addend
8841 && ent2->tls_type == ent->tls_type
8842 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8844 ent2->is_indirect = TRUE;
8845 ent2->got.ent = ent;
8849 /* Allocate space in .plt, .got and associated reloc sections for
8853 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8855 struct bfd_link_info *info;
8856 struct ppc_link_hash_table *htab;
8858 struct ppc_link_hash_entry *eh;
8859 struct elf_dyn_relocs *p;
8860 struct got_entry **pgent, *gent;
8862 if (h->root.type == bfd_link_hash_indirect)
8865 info = (struct bfd_link_info *) inf;
8866 htab = ppc_hash_table (info);
8870 if ((htab->elf.dynamic_sections_created
8872 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8873 || h->type == STT_GNU_IFUNC)
8875 struct plt_entry *pent;
8876 bfd_boolean doneone = FALSE;
8877 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8878 if (pent->plt.refcount > 0)
8880 if (!htab->elf.dynamic_sections_created
8881 || h->dynindx == -1)
8884 pent->plt.offset = s->size;
8885 s->size += PLT_ENTRY_SIZE;
8890 /* If this is the first .plt entry, make room for the special
8894 s->size += PLT_INITIAL_ENTRY_SIZE;
8896 pent->plt.offset = s->size;
8898 /* Make room for this entry. */
8899 s->size += PLT_ENTRY_SIZE;
8901 /* Make room for the .glink code. */
8904 s->size += GLINK_CALL_STUB_SIZE;
8905 /* We need bigger stubs past index 32767. */
8906 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8910 /* We also need to make an entry in the .rela.plt section. */
8913 s->size += sizeof (Elf64_External_Rela);
8917 pent->plt.offset = (bfd_vma) -1;
8920 h->plt.plist = NULL;
8926 h->plt.plist = NULL;
8930 eh = (struct ppc_link_hash_entry *) h;
8931 /* Run through the TLS GD got entries first if we're changing them
8933 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8934 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8935 if (gent->got.refcount > 0
8936 && (gent->tls_type & TLS_GD) != 0)
8938 /* This was a GD entry that has been converted to TPREL. If
8939 there happens to be a TPREL entry we can use that one. */
8940 struct got_entry *ent;
8941 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8942 if (ent->got.refcount > 0
8943 && (ent->tls_type & TLS_TPREL) != 0
8944 && ent->addend == gent->addend
8945 && ent->owner == gent->owner)
8947 gent->got.refcount = 0;
8951 /* If not, then we'll be using our own TPREL entry. */
8952 if (gent->got.refcount != 0)
8953 gent->tls_type = TLS_TLS | TLS_TPREL;
8956 /* Remove any list entry that won't generate a word in the GOT before
8957 we call merge_got_entries. Otherwise we risk merging to empty
8959 pgent = &h->got.glist;
8960 while ((gent = *pgent) != NULL)
8961 if (gent->got.refcount > 0)
8963 if ((gent->tls_type & TLS_LD) != 0
8966 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8967 *pgent = gent->next;
8970 pgent = &gent->next;
8973 *pgent = gent->next;
8975 if (!htab->do_multi_toc)
8976 merge_got_entries (&h->got.glist);
8978 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8979 if (!gent->is_indirect)
8981 /* Make sure this symbol is output as a dynamic symbol.
8982 Undefined weak syms won't yet be marked as dynamic,
8983 nor will all TLS symbols. */
8984 if (h->dynindx == -1
8986 && h->type != STT_GNU_IFUNC
8987 && htab->elf.dynamic_sections_created)
8989 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8993 if (!is_ppc64_elf (gent->owner))
8996 allocate_got (h, info, gent);
8999 if (eh->dyn_relocs == NULL
9000 || (!htab->elf.dynamic_sections_created
9001 && h->type != STT_GNU_IFUNC))
9004 /* In the shared -Bsymbolic case, discard space allocated for
9005 dynamic pc-relative relocs against symbols which turn out to be
9006 defined in regular objects. For the normal shared case, discard
9007 space for relocs that have become local due to symbol visibility
9012 /* Relocs that use pc_count are those that appear on a call insn,
9013 or certain REL relocs (see must_be_dyn_reloc) that can be
9014 generated via assembly. We want calls to protected symbols to
9015 resolve directly to the function rather than going via the plt.
9016 If people want function pointer comparisons to work as expected
9017 then they should avoid writing weird assembly. */
9018 if (SYMBOL_CALLS_LOCAL (info, h))
9020 struct elf_dyn_relocs **pp;
9022 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9024 p->count -= p->pc_count;
9033 /* Also discard relocs on undefined weak syms with non-default
9035 if (eh->dyn_relocs != NULL
9036 && h->root.type == bfd_link_hash_undefweak)
9038 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9039 eh->dyn_relocs = NULL;
9041 /* Make sure this symbol is output as a dynamic symbol.
9042 Undefined weak syms won't yet be marked as dynamic. */
9043 else if (h->dynindx == -1
9044 && !h->forced_local)
9046 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9051 else if (h->type == STT_GNU_IFUNC)
9053 if (!h->non_got_ref)
9054 eh->dyn_relocs = NULL;
9056 else if (ELIMINATE_COPY_RELOCS)
9058 /* For the non-shared case, discard space for relocs against
9059 symbols which turn out to need copy relocs or are not
9065 /* Make sure this symbol is output as a dynamic symbol.
9066 Undefined weak syms won't yet be marked as dynamic. */
9067 if (h->dynindx == -1
9068 && !h->forced_local)
9070 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9074 /* If that succeeded, we know we'll be keeping all the
9076 if (h->dynindx != -1)
9080 eh->dyn_relocs = NULL;
9085 /* Finally, allocate space. */
9086 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9088 asection *sreloc = elf_section_data (p->sec)->sreloc;
9089 if (!htab->elf.dynamic_sections_created)
9090 sreloc = htab->reliplt;
9091 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9097 /* Find any dynamic relocs that apply to read-only sections. */
9100 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9102 struct ppc_link_hash_entry *eh;
9103 struct elf_dyn_relocs *p;
9105 eh = (struct ppc_link_hash_entry *) h;
9106 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9108 asection *s = p->sec->output_section;
9110 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9112 struct bfd_link_info *info = inf;
9114 info->flags |= DF_TEXTREL;
9116 /* Not an error, just cut short the traversal. */
9123 /* Set the sizes of the dynamic sections. */
9126 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
9127 struct bfd_link_info *info)
9129 struct ppc_link_hash_table *htab;
9134 struct got_entry *first_tlsld;
9136 htab = ppc_hash_table (info);
9140 dynobj = htab->elf.dynobj;
9144 if (htab->elf.dynamic_sections_created)
9146 /* Set the contents of the .interp section to the interpreter. */
9147 if (info->executable)
9149 s = bfd_get_linker_section (dynobj, ".interp");
9152 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9153 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9157 /* Set up .got offsets for local syms, and space for local dynamic
9159 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9161 struct got_entry **lgot_ents;
9162 struct got_entry **end_lgot_ents;
9163 struct plt_entry **local_plt;
9164 struct plt_entry **end_local_plt;
9165 unsigned char *lgot_masks;
9166 bfd_size_type locsymcount;
9167 Elf_Internal_Shdr *symtab_hdr;
9170 if (!is_ppc64_elf (ibfd))
9173 for (s = ibfd->sections; s != NULL; s = s->next)
9175 struct elf_dyn_relocs *p;
9177 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9179 if (!bfd_is_abs_section (p->sec)
9180 && bfd_is_abs_section (p->sec->output_section))
9182 /* Input section has been discarded, either because
9183 it is a copy of a linkonce section or due to
9184 linker script /DISCARD/, so we'll be discarding
9187 else if (p->count != 0)
9189 srel = elf_section_data (p->sec)->sreloc;
9190 if (!htab->elf.dynamic_sections_created)
9191 srel = htab->reliplt;
9192 srel->size += p->count * sizeof (Elf64_External_Rela);
9193 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9194 info->flags |= DF_TEXTREL;
9199 lgot_ents = elf_local_got_ents (ibfd);
9203 symtab_hdr = &elf_symtab_hdr (ibfd);
9204 locsymcount = symtab_hdr->sh_info;
9205 end_lgot_ents = lgot_ents + locsymcount;
9206 local_plt = (struct plt_entry **) end_lgot_ents;
9207 end_local_plt = local_plt + locsymcount;
9208 lgot_masks = (unsigned char *) end_local_plt;
9209 s = ppc64_elf_tdata (ibfd)->got;
9210 srel = ppc64_elf_tdata (ibfd)->relgot;
9211 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9213 struct got_entry **pent, *ent;
9216 while ((ent = *pent) != NULL)
9217 if (ent->got.refcount > 0)
9219 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9221 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9226 unsigned int num = 1;
9227 ent->got.offset = s->size;
9228 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9232 srel->size += num * sizeof (Elf64_External_Rela);
9233 else if ((*lgot_masks & PLT_IFUNC) != 0)
9236 += num * sizeof (Elf64_External_Rela);
9238 += num * sizeof (Elf64_External_Rela);
9247 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9248 for (; local_plt < end_local_plt; ++local_plt)
9250 struct plt_entry *ent;
9252 for (ent = *local_plt; ent != NULL; ent = ent->next)
9253 if (ent->plt.refcount > 0)
9256 ent->plt.offset = s->size;
9257 s->size += PLT_ENTRY_SIZE;
9259 htab->reliplt->size += sizeof (Elf64_External_Rela);
9262 ent->plt.offset = (bfd_vma) -1;
9266 /* Allocate global sym .plt and .got entries, and space for global
9267 sym dynamic relocs. */
9268 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9271 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9273 struct got_entry *ent;
9275 if (!is_ppc64_elf (ibfd))
9278 ent = ppc64_tlsld_got (ibfd);
9279 if (ent->got.refcount > 0)
9281 if (!htab->do_multi_toc && first_tlsld != NULL)
9283 ent->is_indirect = TRUE;
9284 ent->got.ent = first_tlsld;
9288 if (first_tlsld == NULL)
9290 s = ppc64_elf_tdata (ibfd)->got;
9291 ent->got.offset = s->size;
9296 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9297 srel->size += sizeof (Elf64_External_Rela);
9302 ent->got.offset = (bfd_vma) -1;
9305 /* We now have determined the sizes of the various dynamic sections.
9306 Allocate memory for them. */
9308 for (s = dynobj->sections; s != NULL; s = s->next)
9310 if ((s->flags & SEC_LINKER_CREATED) == 0)
9313 if (s == htab->brlt || s == htab->relbrlt)
9314 /* These haven't been allocated yet; don't strip. */
9316 else if (s == htab->got
9320 || s == htab->dynbss)
9322 /* Strip this section if we don't need it; see the
9325 else if (s == htab->glink_eh_frame)
9327 if (!bfd_is_abs_section (s->output_section))
9328 /* Not sized yet. */
9331 else if (CONST_STRNEQ (s->name, ".rela"))
9335 if (s != htab->relplt)
9338 /* We use the reloc_count field as a counter if we need
9339 to copy relocs into the output file. */
9345 /* It's not one of our sections, so don't allocate space. */
9351 /* If we don't need this section, strip it from the
9352 output file. This is mostly to handle .rela.bss and
9353 .rela.plt. We must create both sections in
9354 create_dynamic_sections, because they must be created
9355 before the linker maps input sections to output
9356 sections. The linker does that before
9357 adjust_dynamic_symbol is called, and it is that
9358 function which decides whether anything needs to go
9359 into these sections. */
9360 s->flags |= SEC_EXCLUDE;
9364 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9367 /* Allocate memory for the section contents. We use bfd_zalloc
9368 here in case unused entries are not reclaimed before the
9369 section's contents are written out. This should not happen,
9370 but this way if it does we get a R_PPC64_NONE reloc in .rela
9371 sections instead of garbage.
9372 We also rely on the section contents being zero when writing
9374 s->contents = bfd_zalloc (dynobj, s->size);
9375 if (s->contents == NULL)
9379 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9381 if (!is_ppc64_elf (ibfd))
9384 s = ppc64_elf_tdata (ibfd)->got;
9385 if (s != NULL && s != htab->got)
9388 s->flags |= SEC_EXCLUDE;
9391 s->contents = bfd_zalloc (ibfd, s->size);
9392 if (s->contents == NULL)
9396 s = ppc64_elf_tdata (ibfd)->relgot;
9400 s->flags |= SEC_EXCLUDE;
9403 s->contents = bfd_zalloc (ibfd, s->size);
9404 if (s->contents == NULL)
9412 if (htab->elf.dynamic_sections_created)
9414 /* Add some entries to the .dynamic section. We fill in the
9415 values later, in ppc64_elf_finish_dynamic_sections, but we
9416 must add the entries now so that we get the correct size for
9417 the .dynamic section. The DT_DEBUG entry is filled in by the
9418 dynamic linker and used by the debugger. */
9419 #define add_dynamic_entry(TAG, VAL) \
9420 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9422 if (info->executable)
9424 if (!add_dynamic_entry (DT_DEBUG, 0))
9428 if (htab->plt != NULL && htab->plt->size != 0)
9430 if (!add_dynamic_entry (DT_PLTGOT, 0)
9431 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9432 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9433 || !add_dynamic_entry (DT_JMPREL, 0)
9434 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9440 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9441 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9445 if (!htab->no_tls_get_addr_opt
9446 && htab->tls_get_addr_fd != NULL
9447 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9448 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9453 if (!add_dynamic_entry (DT_RELA, 0)
9454 || !add_dynamic_entry (DT_RELASZ, 0)
9455 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9458 /* If any dynamic relocs apply to a read-only section,
9459 then we need a DT_TEXTREL entry. */
9460 if ((info->flags & DF_TEXTREL) == 0)
9461 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9463 if ((info->flags & DF_TEXTREL) != 0)
9465 if (!add_dynamic_entry (DT_TEXTREL, 0))
9470 #undef add_dynamic_entry
9475 /* Determine the type of stub needed, if any, for a call. */
9477 static inline enum ppc_stub_type
9478 ppc_type_of_stub (asection *input_sec,
9479 const Elf_Internal_Rela *rel,
9480 struct ppc_link_hash_entry **hash,
9481 struct plt_entry **plt_ent,
9482 bfd_vma destination)
9484 struct ppc_link_hash_entry *h = *hash;
9486 bfd_vma branch_offset;
9487 bfd_vma max_branch_offset;
9488 enum elf_ppc64_reloc_type r_type;
9492 struct plt_entry *ent;
9493 struct ppc_link_hash_entry *fdh = h;
9495 && h->oh->is_func_descriptor)
9497 fdh = ppc_follow_link (h->oh);
9501 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9502 if (ent->addend == rel->r_addend
9503 && ent->plt.offset != (bfd_vma) -1)
9506 return ppc_stub_plt_call;
9509 /* Here, we know we don't have a plt entry. If we don't have a
9510 either a defined function descriptor or a defined entry symbol
9511 in a regular object file, then it is pointless trying to make
9512 any other type of stub. */
9513 if (!is_static_defined (&fdh->elf)
9514 && !is_static_defined (&h->elf))
9515 return ppc_stub_none;
9517 else if (elf_local_got_ents (input_sec->owner) != NULL)
9519 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9520 struct plt_entry **local_plt = (struct plt_entry **)
9521 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9522 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9524 if (local_plt[r_symndx] != NULL)
9526 struct plt_entry *ent;
9528 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9529 if (ent->addend == rel->r_addend
9530 && ent->plt.offset != (bfd_vma) -1)
9533 return ppc_stub_plt_call;
9538 /* Determine where the call point is. */
9539 location = (input_sec->output_offset
9540 + input_sec->output_section->vma
9543 branch_offset = destination - location;
9544 r_type = ELF64_R_TYPE (rel->r_info);
9546 /* Determine if a long branch stub is needed. */
9547 max_branch_offset = 1 << 25;
9548 if (r_type != R_PPC64_REL24)
9549 max_branch_offset = 1 << 15;
9551 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9552 /* We need a stub. Figure out whether a long_branch or plt_branch
9554 return ppc_stub_long_branch;
9556 return ppc_stub_none;
9559 /* With power7 weakly ordered memory model, it is possible for ld.so
9560 to update a plt entry in one thread and have another thread see a
9561 stale zero toc entry. To avoid this we need some sort of acquire
9562 barrier in the call stub. One solution is to make the load of the
9563 toc word seem to appear to depend on the load of the function entry
9564 word. Another solution is to test for r2 being zero, and branch to
9565 the appropriate glink entry if so.
9567 . fake dep barrier compare
9568 . ld 11,xxx(2) ld 11,xxx(2)
9570 . xor 11,11,11 ld 2,xxx+8(2)
9571 . add 2,2,11 cmpldi 2,0
9572 . ld 2,xxx+8(2) bnectr+
9573 . bctr b <glink_entry>
9575 The solution involving the compare turns out to be faster, so
9576 that's what we use unless the branch won't reach. */
9578 #define ALWAYS_USE_FAKE_DEP 0
9579 #define ALWAYS_EMIT_R2SAVE 0
9581 #define PPC_LO(v) ((v) & 0xffff)
9582 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9583 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9585 static inline unsigned int
9586 plt_stub_size (struct ppc_link_hash_table *htab,
9587 struct ppc_stub_hash_entry *stub_entry,
9590 unsigned size = PLT_CALL_STUB_SIZE;
9592 if (!(ALWAYS_EMIT_R2SAVE
9593 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
9595 if (!htab->plt_static_chain)
9597 if (htab->plt_thread_safe)
9599 if (PPC_HA (off) == 0)
9601 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
9603 if (stub_entry->h != NULL
9604 && (stub_entry->h == htab->tls_get_addr_fd
9605 || stub_entry->h == htab->tls_get_addr)
9606 && !htab->no_tls_get_addr_opt)
9611 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9612 then return the padding needed to do so. */
9613 static inline unsigned int
9614 plt_stub_pad (struct ppc_link_hash_table *htab,
9615 struct ppc_stub_hash_entry *stub_entry,
9618 int stub_align = 1 << htab->plt_stub_align;
9619 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
9620 bfd_vma stub_off = stub_entry->stub_sec->size;
9622 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
9623 > (stub_size & -stub_align))
9624 return stub_align - (stub_off & (stub_align - 1));
9628 /* Build a .plt call stub. */
9630 static inline bfd_byte *
9631 build_plt_stub (struct ppc_link_hash_table *htab,
9632 struct ppc_stub_hash_entry *stub_entry,
9633 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9635 bfd *obfd = htab->stub_bfd;
9636 bfd_boolean plt_static_chain = htab->plt_static_chain;
9637 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
9638 bfd_boolean use_fake_dep = plt_thread_safe;
9639 bfd_vma cmp_branch_off = 0;
9641 if (!ALWAYS_USE_FAKE_DEP
9643 && !(stub_entry->h != NULL
9644 && (stub_entry->h == htab->tls_get_addr_fd
9645 || stub_entry->h == htab->tls_get_addr)
9646 && !htab->no_tls_get_addr_opt))
9648 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
9649 bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9650 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
9653 if (pltindex > 32767)
9654 glinkoff += (pltindex - 32767) * 4;
9656 + htab->glink->output_offset
9657 + htab->glink->output_section->vma);
9658 from = (p - stub_entry->stub_sec->contents
9659 + 4 * (ALWAYS_EMIT_R2SAVE
9660 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9661 + 4 * (PPC_HA (offset) != 0)
9662 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
9664 + 4 * (plt_static_chain != 0)
9666 + stub_entry->stub_sec->output_offset
9667 + stub_entry->stub_sec->output_section->vma);
9668 cmp_branch_off = to - from;
9669 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
9672 if (PPC_HA (offset) != 0)
9676 if (ALWAYS_EMIT_R2SAVE
9677 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9679 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9680 r[1].r_offset = r[0].r_offset + 4;
9681 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9682 r[1].r_addend = r[0].r_addend;
9683 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9685 r[2].r_offset = r[1].r_offset + 4;
9686 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9687 r[2].r_addend = r[0].r_addend;
9691 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
9692 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9693 r[2].r_addend = r[0].r_addend + 8;
9694 if (plt_static_chain)
9696 r[3].r_offset = r[2].r_offset + 4;
9697 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9698 r[3].r_addend = r[0].r_addend + 16;
9702 if (ALWAYS_EMIT_R2SAVE
9703 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9704 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9705 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9706 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9707 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9709 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9712 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9715 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9716 bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4;
9718 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9719 if (plt_static_chain)
9720 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9726 if (ALWAYS_EMIT_R2SAVE
9727 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9729 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9730 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9732 r[1].r_offset = r[0].r_offset + 4;
9733 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9734 r[1].r_addend = r[0].r_addend;
9738 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
9739 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9740 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
9741 if (plt_static_chain)
9743 r[2].r_offset = r[1].r_offset + 4;
9744 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9745 r[2].r_addend = r[0].r_addend + 8;
9749 if (ALWAYS_EMIT_R2SAVE
9750 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9751 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9752 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9753 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9755 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9758 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9761 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9762 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
9764 if (plt_static_chain)
9765 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9766 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9768 if (plt_thread_safe && !use_fake_dep)
9770 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
9771 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
9772 bfd_put_32 (obfd, B_DOT + cmp_branch_off, p), p += 4;
9775 bfd_put_32 (obfd, BCTR, p), p += 4;
9779 /* Build a special .plt call stub for __tls_get_addr. */
9781 #define LD_R11_0R3 0xe9630000
9782 #define LD_R12_0R3 0xe9830000
9783 #define MR_R0_R3 0x7c601b78
9784 #define CMPDI_R11_0 0x2c2b0000
9785 #define ADD_R3_R12_R13 0x7c6c6a14
9786 #define BEQLR 0x4d820020
9787 #define MR_R3_R0 0x7c030378
9788 #define MFLR_R11 0x7d6802a6
9789 #define STD_R11_0R1 0xf9610000
9790 #define BCTRL 0x4e800421
9791 #define LD_R11_0R1 0xe9610000
9792 #define LD_R2_0R1 0xe8410000
9793 #define MTLR_R11 0x7d6803a6
9795 static inline bfd_byte *
9796 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
9797 struct ppc_stub_hash_entry *stub_entry,
9798 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9800 bfd *obfd = htab->stub_bfd;
9802 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9803 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9804 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9805 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9806 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9807 bfd_put_32 (obfd, BEQLR, p), p += 4;
9808 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9809 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9810 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9813 r[0].r_offset += 9 * 4;
9814 p = build_plt_stub (htab, stub_entry, p, offset, r);
9815 bfd_put_32 (obfd, BCTRL, p - 4);
9817 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9818 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9819 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9820 bfd_put_32 (obfd, BLR, p), p += 4;
9825 static Elf_Internal_Rela *
9826 get_relocs (asection *sec, int count)
9828 Elf_Internal_Rela *relocs;
9829 struct bfd_elf_section_data *elfsec_data;
9831 elfsec_data = elf_section_data (sec);
9832 relocs = elfsec_data->relocs;
9835 bfd_size_type relsize;
9836 relsize = sec->reloc_count * sizeof (*relocs);
9837 relocs = bfd_alloc (sec->owner, relsize);
9840 elfsec_data->relocs = relocs;
9841 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9842 sizeof (Elf_Internal_Shdr));
9843 if (elfsec_data->rela.hdr == NULL)
9845 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9846 * sizeof (Elf64_External_Rela));
9847 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
9848 sec->reloc_count = 0;
9850 relocs += sec->reloc_count;
9851 sec->reloc_count += count;
9856 get_r2off (struct bfd_link_info *info,
9857 struct ppc_stub_hash_entry *stub_entry)
9859 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9860 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9864 /* Support linking -R objects. Get the toc pointer from the
9867 asection *opd = stub_entry->h->elf.root.u.def.section;
9868 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9870 if (strcmp (opd->name, ".opd") != 0
9871 || opd->reloc_count != 0)
9873 info->callbacks->einfo (_("%P: cannot find opd entry toc for %s\n"),
9874 stub_entry->h->elf.root.root.string);
9875 bfd_set_error (bfd_error_bad_value);
9878 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9880 r2off = bfd_get_64 (opd->owner, buf);
9881 r2off -= elf_gp (info->output_bfd);
9883 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9888 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9890 struct ppc_stub_hash_entry *stub_entry;
9891 struct ppc_branch_hash_entry *br_entry;
9892 struct bfd_link_info *info;
9893 struct ppc_link_hash_table *htab;
9898 Elf_Internal_Rela *r;
9901 /* Massage our args to the form they really have. */
9902 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9905 htab = ppc_hash_table (info);
9909 /* Make a note of the offset within the stubs for this entry. */
9910 stub_entry->stub_offset = stub_entry->stub_sec->size;
9911 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9913 htab->stub_count[stub_entry->stub_type - 1] += 1;
9914 switch (stub_entry->stub_type)
9916 case ppc_stub_long_branch:
9917 case ppc_stub_long_branch_r2off:
9918 /* Branches are relative. This is where we are going to. */
9919 off = dest = (stub_entry->target_value
9920 + stub_entry->target_section->output_offset
9921 + stub_entry->target_section->output_section->vma);
9923 /* And this is where we are coming from. */
9924 off -= (stub_entry->stub_offset
9925 + stub_entry->stub_sec->output_offset
9926 + stub_entry->stub_sec->output_section->vma);
9929 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9931 bfd_vma r2off = get_r2off (info, stub_entry);
9935 htab->stub_error = TRUE;
9938 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9941 if (PPC_HA (r2off) != 0)
9944 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9947 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9951 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9953 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9955 info->callbacks->einfo (_("%P: long branch stub `%s' offset overflow\n"),
9956 stub_entry->root.string);
9957 htab->stub_error = TRUE;
9961 if (info->emitrelocations)
9963 r = get_relocs (stub_entry->stub_sec, 1);
9966 r->r_offset = loc - stub_entry->stub_sec->contents;
9967 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9969 if (stub_entry->h != NULL)
9971 struct elf_link_hash_entry **hashes;
9972 unsigned long symndx;
9973 struct ppc_link_hash_entry *h;
9975 hashes = elf_sym_hashes (htab->stub_bfd);
9978 bfd_size_type hsize;
9980 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9981 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9984 elf_sym_hashes (htab->stub_bfd) = hashes;
9985 htab->stub_globals = 1;
9987 symndx = htab->stub_globals++;
9989 hashes[symndx] = &h->elf;
9990 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9991 if (h->oh != NULL && h->oh->is_func)
9992 h = ppc_follow_link (h->oh);
9993 if (h->elf.root.u.def.section != stub_entry->target_section)
9994 /* H is an opd symbol. The addend must be zero. */
9998 off = (h->elf.root.u.def.value
9999 + h->elf.root.u.def.section->output_offset
10000 + h->elf.root.u.def.section->output_section->vma);
10001 r->r_addend -= off;
10007 case ppc_stub_plt_branch:
10008 case ppc_stub_plt_branch_r2off:
10009 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10010 stub_entry->root.string + 9,
10012 if (br_entry == NULL)
10014 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10015 stub_entry->root.string);
10016 htab->stub_error = TRUE;
10020 dest = (stub_entry->target_value
10021 + stub_entry->target_section->output_offset
10022 + stub_entry->target_section->output_section->vma);
10024 bfd_put_64 (htab->brlt->owner, dest,
10025 htab->brlt->contents + br_entry->offset);
10027 if (br_entry->iter == htab->stub_iteration)
10029 br_entry->iter = 0;
10031 if (htab->relbrlt != NULL)
10033 /* Create a reloc for the branch lookup table entry. */
10034 Elf_Internal_Rela rela;
10037 rela.r_offset = (br_entry->offset
10038 + htab->brlt->output_offset
10039 + htab->brlt->output_section->vma);
10040 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10041 rela.r_addend = dest;
10043 rl = htab->relbrlt->contents;
10044 rl += (htab->relbrlt->reloc_count++
10045 * sizeof (Elf64_External_Rela));
10046 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10048 else if (info->emitrelocations)
10050 r = get_relocs (htab->brlt, 1);
10053 /* brlt, being SEC_LINKER_CREATED does not go through the
10054 normal reloc processing. Symbols and offsets are not
10055 translated from input file to output file form, so
10056 set up the offset per the output file. */
10057 r->r_offset = (br_entry->offset
10058 + htab->brlt->output_offset
10059 + htab->brlt->output_section->vma);
10060 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10061 r->r_addend = dest;
10065 dest = (br_entry->offset
10066 + htab->brlt->output_offset
10067 + htab->brlt->output_section->vma);
10070 - elf_gp (htab->brlt->output_section->owner)
10071 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10073 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10075 info->callbacks->einfo
10076 (_("%P: linkage table error against `%s'\n"),
10077 stub_entry->root.string);
10078 bfd_set_error (bfd_error_bad_value);
10079 htab->stub_error = TRUE;
10083 if (info->emitrelocations)
10085 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10088 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10089 if (bfd_big_endian (info->output_bfd))
10090 r[0].r_offset += 2;
10091 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10092 r[0].r_offset += 4;
10093 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10094 r[0].r_addend = dest;
10095 if (PPC_HA (off) != 0)
10097 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10098 r[1].r_offset = r[0].r_offset + 4;
10099 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10100 r[1].r_addend = r[0].r_addend;
10104 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10106 if (PPC_HA (off) != 0)
10109 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10111 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10116 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10121 bfd_vma r2off = get_r2off (info, stub_entry);
10125 htab->stub_error = TRUE;
10129 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10132 if (PPC_HA (off) != 0)
10135 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10137 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10142 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10146 if (PPC_HA (r2off) != 0)
10149 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10152 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10155 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
10157 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10160 case ppc_stub_plt_call:
10161 case ppc_stub_plt_call_r2save:
10162 if (stub_entry->h != NULL
10163 && stub_entry->h->is_func_descriptor
10164 && stub_entry->h->oh != NULL)
10166 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10168 /* If the old-ABI "dot-symbol" is undefined make it weak so
10169 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10170 FIXME: We used to define the symbol on one of the call
10171 stubs instead, which is why we test symbol section id
10172 against htab->top_id in various places. Likely all
10173 these checks could now disappear. */
10174 if (fh->elf.root.type == bfd_link_hash_undefined)
10175 fh->elf.root.type = bfd_link_hash_undefweak;
10176 /* Stop undo_symbol_twiddle changing it back to undefined. */
10177 fh->was_undefined = 0;
10180 /* Now build the stub. */
10181 dest = stub_entry->plt_ent->plt.offset & ~1;
10182 if (dest >= (bfd_vma) -2)
10186 if (!htab->elf.dynamic_sections_created
10187 || stub_entry->h == NULL
10188 || stub_entry->h->elf.dynindx == -1)
10191 dest += plt->output_offset + plt->output_section->vma;
10193 if (stub_entry->h == NULL
10194 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10196 Elf_Internal_Rela rela;
10199 rela.r_offset = dest;
10200 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10201 rela.r_addend = (stub_entry->target_value
10202 + stub_entry->target_section->output_offset
10203 + stub_entry->target_section->output_section->vma);
10205 rl = (htab->reliplt->contents
10206 + (htab->reliplt->reloc_count++
10207 * sizeof (Elf64_External_Rela)));
10208 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10209 stub_entry->plt_ent->plt.offset |= 1;
10213 - elf_gp (plt->output_section->owner)
10214 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10216 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10218 info->callbacks->einfo
10219 (_("%P: linkage table error against `%s'\n"),
10220 stub_entry->h != NULL
10221 ? stub_entry->h->elf.root.root.string
10223 bfd_set_error (bfd_error_bad_value);
10224 htab->stub_error = TRUE;
10228 if (htab->plt_stub_align != 0)
10230 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10232 stub_entry->stub_sec->size += pad;
10233 stub_entry->stub_offset = stub_entry->stub_sec->size;
10238 if (info->emitrelocations)
10240 r = get_relocs (stub_entry->stub_sec,
10242 + (PPC_HA (off) != 0)
10243 + (htab->plt_static_chain
10244 && PPC_HA (off + 16) == PPC_HA (off))));
10247 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10248 if (bfd_big_endian (info->output_bfd))
10249 r[0].r_offset += 2;
10250 r[0].r_addend = dest;
10252 if (stub_entry->h != NULL
10253 && (stub_entry->h == htab->tls_get_addr_fd
10254 || stub_entry->h == htab->tls_get_addr)
10255 && !htab->no_tls_get_addr_opt)
10256 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10258 p = build_plt_stub (htab, stub_entry, loc, off, r);
10267 stub_entry->stub_sec->size += size;
10269 if (htab->emit_stub_syms)
10271 struct elf_link_hash_entry *h;
10274 const char *const stub_str[] = { "long_branch",
10275 "long_branch_r2off",
10277 "plt_branch_r2off",
10281 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10282 len2 = strlen (stub_entry->root.string);
10283 name = bfd_malloc (len1 + len2 + 2);
10286 memcpy (name, stub_entry->root.string, 9);
10287 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10288 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10289 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10292 if (h->root.type == bfd_link_hash_new)
10294 h->root.type = bfd_link_hash_defined;
10295 h->root.u.def.section = stub_entry->stub_sec;
10296 h->root.u.def.value = stub_entry->stub_offset;
10297 h->ref_regular = 1;
10298 h->def_regular = 1;
10299 h->ref_regular_nonweak = 1;
10300 h->forced_local = 1;
10308 /* As above, but don't actually build the stub. Just bump offset so
10309 we know stub section sizes, and select plt_branch stubs where
10310 long_branch stubs won't do. */
10313 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10315 struct ppc_stub_hash_entry *stub_entry;
10316 struct bfd_link_info *info;
10317 struct ppc_link_hash_table *htab;
10321 /* Massage our args to the form they really have. */
10322 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10325 htab = ppc_hash_table (info);
10329 if (stub_entry->stub_type == ppc_stub_plt_call
10330 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10333 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10334 if (off >= (bfd_vma) -2)
10337 if (!htab->elf.dynamic_sections_created
10338 || stub_entry->h == NULL
10339 || stub_entry->h->elf.dynindx == -1)
10341 off += (plt->output_offset
10342 + plt->output_section->vma
10343 - elf_gp (plt->output_section->owner)
10344 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10346 size = plt_stub_size (htab, stub_entry, off);
10347 if (htab->plt_stub_align)
10348 size += plt_stub_pad (htab, stub_entry, off);
10349 if (info->emitrelocations)
10351 stub_entry->stub_sec->reloc_count
10353 + (PPC_HA (off) != 0)
10354 + (htab->plt_static_chain
10355 && PPC_HA (off + 16) == PPC_HA (off)));
10356 stub_entry->stub_sec->flags |= SEC_RELOC;
10361 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10365 off = (stub_entry->target_value
10366 + stub_entry->target_section->output_offset
10367 + stub_entry->target_section->output_section->vma);
10368 off -= (stub_entry->stub_sec->size
10369 + stub_entry->stub_sec->output_offset
10370 + stub_entry->stub_sec->output_section->vma);
10372 /* Reset the stub type from the plt variant in case we now
10373 can reach with a shorter stub. */
10374 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10375 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10378 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10380 r2off = get_r2off (info, stub_entry);
10383 htab->stub_error = TRUE;
10387 if (PPC_HA (r2off) != 0)
10392 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10393 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10395 struct ppc_branch_hash_entry *br_entry;
10397 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10398 stub_entry->root.string + 9,
10400 if (br_entry == NULL)
10402 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10403 stub_entry->root.string);
10404 htab->stub_error = TRUE;
10408 if (br_entry->iter != htab->stub_iteration)
10410 br_entry->iter = htab->stub_iteration;
10411 br_entry->offset = htab->brlt->size;
10412 htab->brlt->size += 8;
10414 if (htab->relbrlt != NULL)
10415 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10416 else if (info->emitrelocations)
10418 htab->brlt->reloc_count += 1;
10419 htab->brlt->flags |= SEC_RELOC;
10423 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10424 off = (br_entry->offset
10425 + htab->brlt->output_offset
10426 + htab->brlt->output_section->vma
10427 - elf_gp (htab->brlt->output_section->owner)
10428 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10430 if (info->emitrelocations)
10432 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10433 stub_entry->stub_sec->flags |= SEC_RELOC;
10436 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10439 if (PPC_HA (off) != 0)
10445 if (PPC_HA (off) != 0)
10448 if (PPC_HA (r2off) != 0)
10452 else if (info->emitrelocations)
10454 stub_entry->stub_sec->reloc_count += 1;
10455 stub_entry->stub_sec->flags |= SEC_RELOC;
10459 stub_entry->stub_sec->size += size;
10463 /* Set up various things so that we can make a list of input sections
10464 for each output section included in the link. Returns -1 on error,
10465 0 when no stubs will be needed, and 1 on success. */
10468 ppc64_elf_setup_section_lists
10469 (struct bfd_link_info *info,
10470 asection *(*add_stub_section) (const char *, asection *),
10471 void (*layout_sections_again) (void))
10474 int top_id, top_index, id;
10476 asection **input_list;
10478 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10482 /* Stash our params away. */
10483 htab->add_stub_section = add_stub_section;
10484 htab->layout_sections_again = layout_sections_again;
10486 if (htab->brlt == NULL)
10489 /* Find the top input section id. */
10490 for (input_bfd = info->input_bfds, top_id = 3;
10492 input_bfd = input_bfd->link_next)
10494 for (section = input_bfd->sections;
10496 section = section->next)
10498 if (top_id < section->id)
10499 top_id = section->id;
10503 htab->top_id = top_id;
10504 amt = sizeof (struct map_stub) * (top_id + 1);
10505 htab->stub_group = bfd_zmalloc (amt);
10506 if (htab->stub_group == NULL)
10509 /* Set toc_off for com, und, abs and ind sections. */
10510 for (id = 0; id < 3; id++)
10511 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10513 /* We can't use output_bfd->section_count here to find the top output
10514 section index as some sections may have been removed, and
10515 strip_excluded_output_sections doesn't renumber the indices. */
10516 for (section = info->output_bfd->sections, top_index = 0;
10518 section = section->next)
10520 if (top_index < section->index)
10521 top_index = section->index;
10524 htab->top_index = top_index;
10525 amt = sizeof (asection *) * (top_index + 1);
10526 input_list = bfd_zmalloc (amt);
10527 htab->input_list = input_list;
10528 if (input_list == NULL)
10534 /* Set up for first pass at multitoc partitioning. */
10537 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10539 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10541 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10542 htab->toc_curr = elf_gp (info->output_bfd);
10543 htab->toc_bfd = NULL;
10544 htab->toc_first_sec = NULL;
10547 /* The linker repeatedly calls this function for each TOC input section
10548 and linker generated GOT section. Group input bfds such that the toc
10549 within a group is less than 64k in size. */
10552 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10554 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10555 bfd_vma addr, off, limit;
10560 if (!htab->second_toc_pass)
10562 /* Keep track of the first .toc or .got section for this input bfd. */
10563 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
10567 htab->toc_bfd = isec->owner;
10568 htab->toc_first_sec = isec;
10571 addr = isec->output_offset + isec->output_section->vma;
10572 off = addr - htab->toc_curr;
10573 limit = 0x80008000;
10574 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10576 if (off + isec->size > limit)
10578 addr = (htab->toc_first_sec->output_offset
10579 + htab->toc_first_sec->output_section->vma);
10580 htab->toc_curr = addr;
10583 /* toc_curr is the base address of this toc group. Set elf_gp
10584 for the input section to be the offset relative to the
10585 output toc base plus 0x8000. Making the input elf_gp an
10586 offset allows us to move the toc as a whole without
10587 recalculating input elf_gp. */
10588 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10589 off += TOC_BASE_OFF;
10591 /* Die if someone uses a linker script that doesn't keep input
10592 file .toc and .got together. */
10594 && elf_gp (isec->owner) != 0
10595 && elf_gp (isec->owner) != off)
10598 elf_gp (isec->owner) = off;
10602 /* During the second pass toc_first_sec points to the start of
10603 a toc group, and toc_curr is used to track the old elf_gp.
10604 We use toc_bfd to ensure we only look at each bfd once. */
10605 if (htab->toc_bfd == isec->owner)
10607 htab->toc_bfd = isec->owner;
10609 if (htab->toc_first_sec == NULL
10610 || htab->toc_curr != elf_gp (isec->owner))
10612 htab->toc_curr = elf_gp (isec->owner);
10613 htab->toc_first_sec = isec;
10615 addr = (htab->toc_first_sec->output_offset
10616 + htab->toc_first_sec->output_section->vma);
10617 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10618 elf_gp (isec->owner) = off;
10623 /* Called via elf_link_hash_traverse to merge GOT entries for global
10627 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10629 if (h->root.type == bfd_link_hash_indirect)
10632 merge_got_entries (&h->got.glist);
10637 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10641 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10643 struct got_entry *gent;
10645 if (h->root.type == bfd_link_hash_indirect)
10648 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10649 if (!gent->is_indirect)
10650 allocate_got (h, (struct bfd_link_info *) inf, gent);
10654 /* Called on the first multitoc pass after the last call to
10655 ppc64_elf_next_toc_section. This function removes duplicate GOT
10659 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10661 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10662 struct bfd *ibfd, *ibfd2;
10663 bfd_boolean done_something;
10665 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10667 if (!htab->do_multi_toc)
10670 /* Merge global sym got entries within a toc group. */
10671 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10673 /* And tlsld_got. */
10674 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10676 struct got_entry *ent, *ent2;
10678 if (!is_ppc64_elf (ibfd))
10681 ent = ppc64_tlsld_got (ibfd);
10682 if (!ent->is_indirect
10683 && ent->got.offset != (bfd_vma) -1)
10685 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10687 if (!is_ppc64_elf (ibfd2))
10690 ent2 = ppc64_tlsld_got (ibfd2);
10691 if (!ent2->is_indirect
10692 && ent2->got.offset != (bfd_vma) -1
10693 && elf_gp (ibfd2) == elf_gp (ibfd))
10695 ent2->is_indirect = TRUE;
10696 ent2->got.ent = ent;
10702 /* Zap sizes of got sections. */
10703 htab->reliplt->rawsize = htab->reliplt->size;
10704 htab->reliplt->size -= htab->got_reli_size;
10705 htab->got_reli_size = 0;
10707 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10709 asection *got, *relgot;
10711 if (!is_ppc64_elf (ibfd))
10714 got = ppc64_elf_tdata (ibfd)->got;
10717 got->rawsize = got->size;
10719 relgot = ppc64_elf_tdata (ibfd)->relgot;
10720 relgot->rawsize = relgot->size;
10725 /* Now reallocate the got, local syms first. We don't need to
10726 allocate section contents again since we never increase size. */
10727 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10729 struct got_entry **lgot_ents;
10730 struct got_entry **end_lgot_ents;
10731 struct plt_entry **local_plt;
10732 struct plt_entry **end_local_plt;
10733 unsigned char *lgot_masks;
10734 bfd_size_type locsymcount;
10735 Elf_Internal_Shdr *symtab_hdr;
10736 asection *s, *srel;
10738 if (!is_ppc64_elf (ibfd))
10741 lgot_ents = elf_local_got_ents (ibfd);
10745 symtab_hdr = &elf_symtab_hdr (ibfd);
10746 locsymcount = symtab_hdr->sh_info;
10747 end_lgot_ents = lgot_ents + locsymcount;
10748 local_plt = (struct plt_entry **) end_lgot_ents;
10749 end_local_plt = local_plt + locsymcount;
10750 lgot_masks = (unsigned char *) end_local_plt;
10751 s = ppc64_elf_tdata (ibfd)->got;
10752 srel = ppc64_elf_tdata (ibfd)->relgot;
10753 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10755 struct got_entry *ent;
10757 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10759 unsigned int num = 1;
10760 ent->got.offset = s->size;
10761 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10763 s->size += num * 8;
10765 srel->size += num * sizeof (Elf64_External_Rela);
10766 else if ((*lgot_masks & PLT_IFUNC) != 0)
10768 htab->reliplt->size
10769 += num * sizeof (Elf64_External_Rela);
10770 htab->got_reli_size
10771 += num * sizeof (Elf64_External_Rela);
10777 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10779 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10781 struct got_entry *ent;
10783 if (!is_ppc64_elf (ibfd))
10786 ent = ppc64_tlsld_got (ibfd);
10787 if (!ent->is_indirect
10788 && ent->got.offset != (bfd_vma) -1)
10790 asection *s = ppc64_elf_tdata (ibfd)->got;
10791 ent->got.offset = s->size;
10795 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10796 srel->size += sizeof (Elf64_External_Rela);
10801 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10802 if (!done_something)
10803 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10807 if (!is_ppc64_elf (ibfd))
10810 got = ppc64_elf_tdata (ibfd)->got;
10813 done_something = got->rawsize != got->size;
10814 if (done_something)
10819 if (done_something)
10820 (*htab->layout_sections_again) ();
10822 /* Set up for second pass over toc sections to recalculate elf_gp
10823 on input sections. */
10824 htab->toc_bfd = NULL;
10825 htab->toc_first_sec = NULL;
10826 htab->second_toc_pass = TRUE;
10827 return done_something;
10830 /* Called after second pass of multitoc partitioning. */
10833 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10835 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10837 /* After the second pass, toc_curr tracks the TOC offset used
10838 for code sections below in ppc64_elf_next_input_section. */
10839 htab->toc_curr = TOC_BASE_OFF;
10842 /* No toc references were found in ISEC. If the code in ISEC makes no
10843 calls, then there's no need to use toc adjusting stubs when branching
10844 into ISEC. Actually, indirect calls from ISEC are OK as they will
10845 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10846 needed, and 2 if a cyclical call-graph was found but no other reason
10847 for a stub was detected. If called from the top level, a return of
10848 2 means the same as a return of 0. */
10851 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10855 /* Mark this section as checked. */
10856 isec->call_check_done = 1;
10858 /* We know none of our code bearing sections will need toc stubs. */
10859 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10862 if (isec->size == 0)
10865 if (isec->output_section == NULL)
10869 if (isec->reloc_count != 0)
10871 Elf_Internal_Rela *relstart, *rel;
10872 Elf_Internal_Sym *local_syms;
10873 struct ppc_link_hash_table *htab;
10875 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10876 info->keep_memory);
10877 if (relstart == NULL)
10880 /* Look for branches to outside of this section. */
10882 htab = ppc_hash_table (info);
10886 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10888 enum elf_ppc64_reloc_type r_type;
10889 unsigned long r_symndx;
10890 struct elf_link_hash_entry *h;
10891 struct ppc_link_hash_entry *eh;
10892 Elf_Internal_Sym *sym;
10894 struct _opd_sec_data *opd;
10898 r_type = ELF64_R_TYPE (rel->r_info);
10899 if (r_type != R_PPC64_REL24
10900 && r_type != R_PPC64_REL14
10901 && r_type != R_PPC64_REL14_BRTAKEN
10902 && r_type != R_PPC64_REL14_BRNTAKEN)
10905 r_symndx = ELF64_R_SYM (rel->r_info);
10906 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10913 /* Calls to dynamic lib functions go through a plt call stub
10915 eh = (struct ppc_link_hash_entry *) h;
10917 && (eh->elf.plt.plist != NULL
10919 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10925 if (sym_sec == NULL)
10926 /* Ignore other undefined symbols. */
10929 /* Assume branches to other sections not included in the
10930 link need stubs too, to cover -R and absolute syms. */
10931 if (sym_sec->output_section == NULL)
10938 sym_value = sym->st_value;
10941 if (h->root.type != bfd_link_hash_defined
10942 && h->root.type != bfd_link_hash_defweak)
10944 sym_value = h->root.u.def.value;
10946 sym_value += rel->r_addend;
10948 /* If this branch reloc uses an opd sym, find the code section. */
10949 opd = get_opd_info (sym_sec);
10952 if (h == NULL && opd->adjust != NULL)
10956 adjust = opd->adjust[sym->st_value / 8];
10958 /* Assume deleted functions won't ever be called. */
10960 sym_value += adjust;
10963 dest = opd_entry_value (sym_sec, sym_value,
10964 &sym_sec, NULL, FALSE);
10965 if (dest == (bfd_vma) -1)
10970 + sym_sec->output_offset
10971 + sym_sec->output_section->vma);
10973 /* Ignore branch to self. */
10974 if (sym_sec == isec)
10977 /* If the called function uses the toc, we need a stub. */
10978 if (sym_sec->has_toc_reloc
10979 || sym_sec->makes_toc_func_call)
10985 /* Assume any branch that needs a long branch stub might in fact
10986 need a plt_branch stub. A plt_branch stub uses r2. */
10987 else if (dest - (isec->output_offset
10988 + isec->output_section->vma
10989 + rel->r_offset) + (1 << 25) >= (2 << 25))
10995 /* If calling back to a section in the process of being
10996 tested, we can't say for sure that no toc adjusting stubs
10997 are needed, so don't return zero. */
10998 else if (sym_sec->call_check_in_progress)
11001 /* Branches to another section that itself doesn't have any TOC
11002 references are OK. Recursively call ourselves to check. */
11003 else if (!sym_sec->call_check_done)
11007 /* Mark current section as indeterminate, so that other
11008 sections that call back to current won't be marked as
11010 isec->call_check_in_progress = 1;
11011 recur = toc_adjusting_stub_needed (info, sym_sec);
11012 isec->call_check_in_progress = 0;
11023 if (local_syms != NULL
11024 && (elf_symtab_hdr (isec->owner).contents
11025 != (unsigned char *) local_syms))
11027 if (elf_section_data (isec)->relocs != relstart)
11032 && isec->map_head.s != NULL
11033 && (strcmp (isec->output_section->name, ".init") == 0
11034 || strcmp (isec->output_section->name, ".fini") == 0))
11036 if (isec->map_head.s->has_toc_reloc
11037 || isec->map_head.s->makes_toc_func_call)
11039 else if (!isec->map_head.s->call_check_done)
11042 isec->call_check_in_progress = 1;
11043 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11044 isec->call_check_in_progress = 0;
11051 isec->makes_toc_func_call = 1;
11056 /* The linker repeatedly calls this function for each input section,
11057 in the order that input sections are linked into output sections.
11058 Build lists of input sections to determine groupings between which
11059 we may insert linker stubs. */
11062 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11064 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11069 if ((isec->output_section->flags & SEC_CODE) != 0
11070 && isec->output_section->index <= htab->top_index)
11072 asection **list = htab->input_list + isec->output_section->index;
11073 /* Steal the link_sec pointer for our list. */
11074 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11075 /* This happens to make the list in reverse order,
11076 which is what we want. */
11077 PREV_SEC (isec) = *list;
11081 if (htab->multi_toc_needed)
11083 /* If a code section has a function that uses the TOC then we need
11084 to use the right TOC (obviously). Also, make sure that .opd gets
11085 the correct TOC value for R_PPC64_TOC relocs that don't have or
11086 can't find their function symbol (shouldn't ever happen now).
11087 Also specially treat .fixup for the linux kernel. .fixup
11088 contains branches, but only back to the function that hit an
11090 if (isec->has_toc_reloc
11091 || (isec->flags & SEC_CODE) == 0
11092 || strcmp (isec->name, ".fixup") == 0)
11094 if (elf_gp (isec->owner) != 0)
11095 htab->toc_curr = elf_gp (isec->owner);
11099 if (!isec->call_check_done
11100 && toc_adjusting_stub_needed (info, isec) < 0)
11102 /* If we make a local call from this section, ie. a branch
11103 without a following nop, then we have no place to put a
11104 toc restoring insn. We must use the same toc group as
11106 Testing makes_toc_func_call actually tests for *any*
11107 calls to functions that need a good toc pointer. A more
11108 precise test would be better, as this one will set
11109 incorrect values for pasted .init/.fini fragments.
11110 (Fixed later in check_pasted_section.) */
11111 if (isec->makes_toc_func_call
11112 && elf_gp (isec->owner) != 0)
11113 htab->toc_curr = elf_gp (isec->owner);
11117 /* Functions that don't use the TOC can belong in any TOC group.
11118 Use the last TOC base. */
11119 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11123 /* Check that all .init and .fini sections use the same toc, if they
11124 have toc relocs. */
11127 check_pasted_section (struct bfd_link_info *info, const char *name)
11129 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11133 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11134 bfd_vma toc_off = 0;
11137 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11138 if (i->has_toc_reloc)
11141 toc_off = htab->stub_group[i->id].toc_off;
11142 else if (toc_off != htab->stub_group[i->id].toc_off)
11147 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11148 if (i->makes_toc_func_call)
11150 toc_off = htab->stub_group[i->id].toc_off;
11154 /* Make sure the whole pasted function uses the same toc offset. */
11156 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11157 htab->stub_group[i->id].toc_off = toc_off;
11163 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11165 return (check_pasted_section (info, ".init")
11166 & check_pasted_section (info, ".fini"));
11169 /* See whether we can group stub sections together. Grouping stub
11170 sections may result in fewer stubs. More importantly, we need to
11171 put all .init* and .fini* stubs at the beginning of the .init or
11172 .fini output sections respectively, because glibc splits the
11173 _init and _fini functions into multiple parts. Putting a stub in
11174 the middle of a function is not a good idea. */
11177 group_sections (struct ppc_link_hash_table *htab,
11178 bfd_size_type stub_group_size,
11179 bfd_boolean stubs_always_before_branch)
11182 bfd_size_type stub14_group_size;
11183 bfd_boolean suppress_size_errors;
11185 suppress_size_errors = FALSE;
11186 stub14_group_size = stub_group_size;
11187 if (stub_group_size == 1)
11189 /* Default values. */
11190 if (stubs_always_before_branch)
11192 stub_group_size = 0x1e00000;
11193 stub14_group_size = 0x7800;
11197 stub_group_size = 0x1c00000;
11198 stub14_group_size = 0x7000;
11200 suppress_size_errors = TRUE;
11203 list = htab->input_list + htab->top_index;
11206 asection *tail = *list;
11207 while (tail != NULL)
11211 bfd_size_type total;
11212 bfd_boolean big_sec;
11216 total = tail->size;
11217 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11218 && ppc64_elf_section_data (tail)->has_14bit_branch
11219 ? stub14_group_size : stub_group_size);
11220 if (big_sec && !suppress_size_errors)
11221 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11222 tail->owner, tail);
11223 curr_toc = htab->stub_group[tail->id].toc_off;
11225 while ((prev = PREV_SEC (curr)) != NULL
11226 && ((total += curr->output_offset - prev->output_offset)
11227 < (ppc64_elf_section_data (prev) != NULL
11228 && ppc64_elf_section_data (prev)->has_14bit_branch
11229 ? stub14_group_size : stub_group_size))
11230 && htab->stub_group[prev->id].toc_off == curr_toc)
11233 /* OK, the size from the start of CURR to the end is less
11234 than stub_group_size and thus can be handled by one stub
11235 section. (or the tail section is itself larger than
11236 stub_group_size, in which case we may be toast.) We
11237 should really be keeping track of the total size of stubs
11238 added here, as stubs contribute to the final output
11239 section size. That's a little tricky, and this way will
11240 only break if stubs added make the total size more than
11241 2^25, ie. for the default stub_group_size, if stubs total
11242 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11245 prev = PREV_SEC (tail);
11246 /* Set up this stub group. */
11247 htab->stub_group[tail->id].link_sec = curr;
11249 while (tail != curr && (tail = prev) != NULL);
11251 /* But wait, there's more! Input sections up to stub_group_size
11252 bytes before the stub section can be handled by it too.
11253 Don't do this if we have a really large section after the
11254 stubs, as adding more stubs increases the chance that
11255 branches may not reach into the stub section. */
11256 if (!stubs_always_before_branch && !big_sec)
11259 while (prev != NULL
11260 && ((total += tail->output_offset - prev->output_offset)
11261 < (ppc64_elf_section_data (prev) != NULL
11262 && ppc64_elf_section_data (prev)->has_14bit_branch
11263 ? stub14_group_size : stub_group_size))
11264 && htab->stub_group[prev->id].toc_off == curr_toc)
11267 prev = PREV_SEC (tail);
11268 htab->stub_group[tail->id].link_sec = curr;
11274 while (list-- != htab->input_list);
11275 free (htab->input_list);
11279 static const unsigned char glink_eh_frame_cie[] =
11281 0, 0, 0, 16, /* length. */
11282 0, 0, 0, 0, /* id. */
11283 1, /* CIE version. */
11284 'z', 'R', 0, /* Augmentation string. */
11285 4, /* Code alignment. */
11286 0x78, /* Data alignment. */
11288 1, /* Augmentation size. */
11289 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11290 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11293 /* Stripping output sections is normally done before dynamic section
11294 symbols have been allocated. This function is called later, and
11295 handles cases like htab->brlt which is mapped to its own output
11299 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11301 if (isec->size == 0
11302 && isec->output_section->size == 0
11303 && !bfd_section_removed_from_list (info->output_bfd,
11304 isec->output_section)
11305 && elf_section_data (isec->output_section)->dynindx == 0)
11307 isec->output_section->flags |= SEC_EXCLUDE;
11308 bfd_section_list_remove (info->output_bfd, isec->output_section);
11309 info->output_bfd->section_count--;
11313 /* Determine and set the size of the stub section for a final link.
11315 The basic idea here is to examine all the relocations looking for
11316 PC-relative calls to a target that is unreachable with a "bl"
11320 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11321 bfd_boolean plt_static_chain, int plt_thread_safe,
11322 int plt_stub_align)
11324 bfd_size_type stub_group_size;
11325 bfd_boolean stubs_always_before_branch;
11326 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11331 htab->plt_static_chain = plt_static_chain;
11332 htab->plt_stub_align = plt_stub_align;
11333 if (plt_thread_safe == -1)
11335 const char *const thread_starter[] =
11339 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11341 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11342 "mq_notify", "create_timer",
11346 "GOMP_parallel_start",
11347 "GOMP_parallel_loop_static_start",
11348 "GOMP_parallel_loop_dynamic_start",
11349 "GOMP_parallel_loop_guided_start",
11350 "GOMP_parallel_loop_runtime_start",
11351 "GOMP_parallel_sections_start",
11355 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11357 struct elf_link_hash_entry *h;
11358 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11359 FALSE, FALSE, TRUE);
11360 plt_thread_safe = h != NULL && h->ref_regular;
11361 if (plt_thread_safe)
11365 htab->plt_thread_safe = plt_thread_safe;
11366 stubs_always_before_branch = group_size < 0;
11367 if (group_size < 0)
11368 stub_group_size = -group_size;
11370 stub_group_size = group_size;
11372 group_sections (htab, stub_group_size, stubs_always_before_branch);
11377 unsigned int bfd_indx;
11378 asection *stub_sec;
11380 htab->stub_iteration += 1;
11382 for (input_bfd = info->input_bfds, bfd_indx = 0;
11384 input_bfd = input_bfd->link_next, bfd_indx++)
11386 Elf_Internal_Shdr *symtab_hdr;
11388 Elf_Internal_Sym *local_syms = NULL;
11390 if (!is_ppc64_elf (input_bfd))
11393 /* We'll need the symbol table in a second. */
11394 symtab_hdr = &elf_symtab_hdr (input_bfd);
11395 if (symtab_hdr->sh_info == 0)
11398 /* Walk over each section attached to the input bfd. */
11399 for (section = input_bfd->sections;
11401 section = section->next)
11403 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11405 /* If there aren't any relocs, then there's nothing more
11407 if ((section->flags & SEC_RELOC) == 0
11408 || (section->flags & SEC_ALLOC) == 0
11409 || (section->flags & SEC_LOAD) == 0
11410 || (section->flags & SEC_CODE) == 0
11411 || section->reloc_count == 0)
11414 /* If this section is a link-once section that will be
11415 discarded, then don't create any stubs. */
11416 if (section->output_section == NULL
11417 || section->output_section->owner != info->output_bfd)
11420 /* Get the relocs. */
11422 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11423 info->keep_memory);
11424 if (internal_relocs == NULL)
11425 goto error_ret_free_local;
11427 /* Now examine each relocation. */
11428 irela = internal_relocs;
11429 irelaend = irela + section->reloc_count;
11430 for (; irela < irelaend; irela++)
11432 enum elf_ppc64_reloc_type r_type;
11433 unsigned int r_indx;
11434 enum ppc_stub_type stub_type;
11435 struct ppc_stub_hash_entry *stub_entry;
11436 asection *sym_sec, *code_sec;
11437 bfd_vma sym_value, code_value;
11438 bfd_vma destination;
11439 bfd_boolean ok_dest;
11440 struct ppc_link_hash_entry *hash;
11441 struct ppc_link_hash_entry *fdh;
11442 struct elf_link_hash_entry *h;
11443 Elf_Internal_Sym *sym;
11445 const asection *id_sec;
11446 struct _opd_sec_data *opd;
11447 struct plt_entry *plt_ent;
11449 r_type = ELF64_R_TYPE (irela->r_info);
11450 r_indx = ELF64_R_SYM (irela->r_info);
11452 if (r_type >= R_PPC64_max)
11454 bfd_set_error (bfd_error_bad_value);
11455 goto error_ret_free_internal;
11458 /* Only look for stubs on branch instructions. */
11459 if (r_type != R_PPC64_REL24
11460 && r_type != R_PPC64_REL14
11461 && r_type != R_PPC64_REL14_BRTAKEN
11462 && r_type != R_PPC64_REL14_BRNTAKEN)
11465 /* Now determine the call target, its name, value,
11467 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11468 r_indx, input_bfd))
11469 goto error_ret_free_internal;
11470 hash = (struct ppc_link_hash_entry *) h;
11477 sym_value = sym->st_value;
11480 else if (hash->elf.root.type == bfd_link_hash_defined
11481 || hash->elf.root.type == bfd_link_hash_defweak)
11483 sym_value = hash->elf.root.u.def.value;
11484 if (sym_sec->output_section != NULL)
11487 else if (hash->elf.root.type == bfd_link_hash_undefweak
11488 || hash->elf.root.type == bfd_link_hash_undefined)
11490 /* Recognise an old ABI func code entry sym, and
11491 use the func descriptor sym instead if it is
11493 if (hash->elf.root.root.string[0] == '.'
11494 && (fdh = lookup_fdh (hash, htab)) != NULL)
11496 if (fdh->elf.root.type == bfd_link_hash_defined
11497 || fdh->elf.root.type == bfd_link_hash_defweak)
11499 sym_sec = fdh->elf.root.u.def.section;
11500 sym_value = fdh->elf.root.u.def.value;
11501 if (sym_sec->output_section != NULL)
11510 bfd_set_error (bfd_error_bad_value);
11511 goto error_ret_free_internal;
11517 sym_value += irela->r_addend;
11518 destination = (sym_value
11519 + sym_sec->output_offset
11520 + sym_sec->output_section->vma);
11523 code_sec = sym_sec;
11524 code_value = sym_value;
11525 opd = get_opd_info (sym_sec);
11530 if (hash == NULL && opd->adjust != NULL)
11532 long adjust = opd->adjust[sym_value / 8];
11535 code_value += adjust;
11536 sym_value += adjust;
11538 dest = opd_entry_value (sym_sec, sym_value,
11539 &code_sec, &code_value, FALSE);
11540 if (dest != (bfd_vma) -1)
11542 destination = dest;
11545 /* Fixup old ABI sym to point at code
11547 hash->elf.root.type = bfd_link_hash_defweak;
11548 hash->elf.root.u.def.section = code_sec;
11549 hash->elf.root.u.def.value = code_value;
11554 /* Determine what (if any) linker stub is needed. */
11556 stub_type = ppc_type_of_stub (section, irela, &hash,
11557 &plt_ent, destination);
11559 if (stub_type != ppc_stub_plt_call)
11561 /* Check whether we need a TOC adjusting stub.
11562 Since the linker pastes together pieces from
11563 different object files when creating the
11564 _init and _fini functions, it may be that a
11565 call to what looks like a local sym is in
11566 fact a call needing a TOC adjustment. */
11567 if (code_sec != NULL
11568 && code_sec->output_section != NULL
11569 && (htab->stub_group[code_sec->id].toc_off
11570 != htab->stub_group[section->id].toc_off)
11571 && (code_sec->has_toc_reloc
11572 || code_sec->makes_toc_func_call))
11573 stub_type = ppc_stub_long_branch_r2off;
11576 if (stub_type == ppc_stub_none)
11579 /* __tls_get_addr calls might be eliminated. */
11580 if (stub_type != ppc_stub_plt_call
11582 && (hash == htab->tls_get_addr
11583 || hash == htab->tls_get_addr_fd)
11584 && section->has_tls_reloc
11585 && irela != internal_relocs)
11587 /* Get tls info. */
11588 unsigned char *tls_mask;
11590 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11591 irela - 1, input_bfd))
11592 goto error_ret_free_internal;
11593 if (*tls_mask != 0)
11597 if (stub_type == ppc_stub_plt_call
11598 && irela + 1 < irelaend
11599 && irela[1].r_offset == irela->r_offset + 4
11600 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
11602 if (!tocsave_find (htab, INSERT,
11603 &local_syms, irela + 1, input_bfd))
11604 goto error_ret_free_internal;
11606 else if (stub_type == ppc_stub_plt_call)
11607 stub_type = ppc_stub_plt_call_r2save;
11609 /* Support for grouping stub sections. */
11610 id_sec = htab->stub_group[section->id].link_sec;
11612 /* Get the name of this stub. */
11613 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11615 goto error_ret_free_internal;
11617 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11618 stub_name, FALSE, FALSE);
11619 if (stub_entry != NULL)
11621 /* The proper stub has already been created. */
11623 if (stub_type == ppc_stub_plt_call_r2save)
11624 stub_entry->stub_type = stub_type;
11628 stub_entry = ppc_add_stub (stub_name, section, info);
11629 if (stub_entry == NULL)
11632 error_ret_free_internal:
11633 if (elf_section_data (section)->relocs == NULL)
11634 free (internal_relocs);
11635 error_ret_free_local:
11636 if (local_syms != NULL
11637 && (symtab_hdr->contents
11638 != (unsigned char *) local_syms))
11643 stub_entry->stub_type = stub_type;
11644 if (stub_type != ppc_stub_plt_call
11645 && stub_type != ppc_stub_plt_call_r2save)
11647 stub_entry->target_value = code_value;
11648 stub_entry->target_section = code_sec;
11652 stub_entry->target_value = sym_value;
11653 stub_entry->target_section = sym_sec;
11655 stub_entry->h = hash;
11656 stub_entry->plt_ent = plt_ent;
11657 stub_entry->addend = irela->r_addend;
11659 if (stub_entry->h != NULL)
11660 htab->stub_globals += 1;
11663 /* We're done with the internal relocs, free them. */
11664 if (elf_section_data (section)->relocs != internal_relocs)
11665 free (internal_relocs);
11668 if (local_syms != NULL
11669 && symtab_hdr->contents != (unsigned char *) local_syms)
11671 if (!info->keep_memory)
11674 symtab_hdr->contents = (unsigned char *) local_syms;
11678 /* We may have added some stubs. Find out the new size of the
11680 for (stub_sec = htab->stub_bfd->sections;
11682 stub_sec = stub_sec->next)
11683 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11685 stub_sec->rawsize = stub_sec->size;
11686 stub_sec->size = 0;
11687 stub_sec->reloc_count = 0;
11688 stub_sec->flags &= ~SEC_RELOC;
11691 htab->brlt->size = 0;
11692 htab->brlt->reloc_count = 0;
11693 htab->brlt->flags &= ~SEC_RELOC;
11694 if (htab->relbrlt != NULL)
11695 htab->relbrlt->size = 0;
11697 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11699 if (info->emitrelocations
11700 && htab->glink != NULL && htab->glink->size != 0)
11702 htab->glink->reloc_count = 1;
11703 htab->glink->flags |= SEC_RELOC;
11706 if (htab->glink_eh_frame != NULL
11707 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
11708 && htab->glink_eh_frame->output_section->size != 0)
11710 size_t size = 0, align;
11712 for (stub_sec = htab->stub_bfd->sections;
11714 stub_sec = stub_sec->next)
11715 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11717 if (htab->glink != NULL && htab->glink->size != 0)
11720 size += sizeof (glink_eh_frame_cie);
11722 align <<= htab->glink_eh_frame->output_section->alignment_power;
11724 size = (size + align) & ~align;
11725 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11726 htab->glink_eh_frame->size = size;
11729 if (htab->plt_stub_align != 0)
11730 for (stub_sec = htab->stub_bfd->sections;
11732 stub_sec = stub_sec->next)
11733 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11734 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
11735 & (-1 << htab->plt_stub_align));
11737 for (stub_sec = htab->stub_bfd->sections;
11739 stub_sec = stub_sec->next)
11740 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11741 && stub_sec->rawsize != stub_sec->size)
11744 /* Exit from this loop when no stubs have been added, and no stubs
11745 have changed size. */
11746 if (stub_sec == NULL
11747 && (htab->glink_eh_frame == NULL
11748 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
11751 /* Ask the linker to do its stuff. */
11752 (*htab->layout_sections_again) ();
11755 maybe_strip_output (info, htab->brlt);
11756 if (htab->glink_eh_frame != NULL)
11757 maybe_strip_output (info, htab->glink_eh_frame);
11762 /* Called after we have determined section placement. If sections
11763 move, we'll be called again. Provide a value for TOCstart. */
11766 ppc64_elf_toc (bfd *obfd)
11771 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11772 order. The TOC starts where the first of these sections starts. */
11773 s = bfd_get_section_by_name (obfd, ".got");
11774 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11775 s = bfd_get_section_by_name (obfd, ".toc");
11776 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11777 s = bfd_get_section_by_name (obfd, ".tocbss");
11778 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11779 s = bfd_get_section_by_name (obfd, ".plt");
11780 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11782 /* This may happen for
11783 o references to TOC base (SYM@toc / TOC[tc0]) without a
11785 o bad linker script
11786 o --gc-sections and empty TOC sections
11788 FIXME: Warn user? */
11790 /* Look for a likely section. We probably won't even be
11792 for (s = obfd->sections; s != NULL; s = s->next)
11793 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11795 == (SEC_ALLOC | SEC_SMALL_DATA))
11798 for (s = obfd->sections; s != NULL; s = s->next)
11799 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11800 == (SEC_ALLOC | SEC_SMALL_DATA))
11803 for (s = obfd->sections; s != NULL; s = s->next)
11804 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11808 for (s = obfd->sections; s != NULL; s = s->next)
11809 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11815 TOCstart = s->output_section->vma + s->output_offset;
11820 /* Build all the stubs associated with the current output file.
11821 The stubs are kept in a hash table attached to the main linker
11822 hash table. This function is called via gldelf64ppc_finish. */
11825 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11826 struct bfd_link_info *info,
11829 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11830 asection *stub_sec;
11832 int stub_sec_count = 0;
11837 htab->emit_stub_syms = emit_stub_syms;
11839 /* Allocate memory to hold the linker stubs. */
11840 for (stub_sec = htab->stub_bfd->sections;
11842 stub_sec = stub_sec->next)
11843 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11844 && stub_sec->size != 0)
11846 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11847 if (stub_sec->contents == NULL)
11849 /* We want to check that built size is the same as calculated
11850 size. rawsize is a convenient location to use. */
11851 stub_sec->rawsize = stub_sec->size;
11852 stub_sec->size = 0;
11855 if (htab->glink != NULL && htab->glink->size != 0)
11860 /* Build the .glink plt call stub. */
11861 if (htab->emit_stub_syms)
11863 struct elf_link_hash_entry *h;
11864 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11865 TRUE, FALSE, FALSE);
11868 if (h->root.type == bfd_link_hash_new)
11870 h->root.type = bfd_link_hash_defined;
11871 h->root.u.def.section = htab->glink;
11872 h->root.u.def.value = 8;
11873 h->ref_regular = 1;
11874 h->def_regular = 1;
11875 h->ref_regular_nonweak = 1;
11876 h->forced_local = 1;
11880 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11881 if (info->emitrelocations)
11883 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11886 r->r_offset = (htab->glink->output_offset
11887 + htab->glink->output_section->vma);
11888 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11889 r->r_addend = plt0;
11891 p = htab->glink->contents;
11892 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11893 bfd_put_64 (htab->glink->owner, plt0, p);
11895 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11897 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11899 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11901 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11903 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11905 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11907 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11909 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11911 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11913 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11915 bfd_put_32 (htab->glink->owner, BCTR, p);
11917 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11919 bfd_put_32 (htab->glink->owner, NOP, p);
11923 /* Build the .glink lazy link call stubs. */
11925 while (p < htab->glink->contents + htab->glink->size)
11929 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11934 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11936 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11939 bfd_put_32 (htab->glink->owner,
11940 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11944 htab->glink->rawsize = p - htab->glink->contents;
11947 if (htab->brlt->size != 0)
11949 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11951 if (htab->brlt->contents == NULL)
11954 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11956 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11957 htab->relbrlt->size);
11958 if (htab->relbrlt->contents == NULL)
11962 if (htab->glink_eh_frame != NULL
11963 && htab->glink_eh_frame->size != 0)
11966 bfd_byte *last_fde;
11967 size_t last_fde_len, size, align, pad;
11969 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
11972 htab->glink_eh_frame->contents = p;
11975 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11977 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
11978 /* CIE length (rewrite in case little-endian). */
11979 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
11980 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
11981 p += sizeof (glink_eh_frame_cie);
11983 for (stub_sec = htab->stub_bfd->sections;
11985 stub_sec = stub_sec->next)
11986 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11991 bfd_put_32 (htab->elf.dynobj, 16, p);
11994 val = p - htab->glink_eh_frame->contents;
11995 bfd_put_32 (htab->elf.dynobj, val, p);
11997 /* Offset to stub section. */
11998 val = (stub_sec->output_section->vma
11999 + stub_sec->output_offset);
12000 val -= (htab->glink_eh_frame->output_section->vma
12001 + htab->glink_eh_frame->output_offset);
12002 val -= p - htab->glink_eh_frame->contents;
12003 if (val + 0x80000000 > 0xffffffff)
12005 info->callbacks->einfo
12006 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12010 bfd_put_32 (htab->elf.dynobj, val, p);
12012 /* stub section size. */
12013 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12015 /* Augmentation. */
12020 if (htab->glink != NULL && htab->glink->size != 0)
12025 bfd_put_32 (htab->elf.dynobj, 20, p);
12028 val = p - htab->glink_eh_frame->contents;
12029 bfd_put_32 (htab->elf.dynobj, val, p);
12031 /* Offset to .glink. */
12032 val = (htab->glink->output_section->vma
12033 + htab->glink->output_offset
12035 val -= (htab->glink_eh_frame->output_section->vma
12036 + htab->glink_eh_frame->output_offset);
12037 val -= p - htab->glink_eh_frame->contents;
12038 if (val + 0x80000000 > 0xffffffff)
12040 info->callbacks->einfo
12041 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12042 htab->glink->name);
12045 bfd_put_32 (htab->elf.dynobj, val, p);
12048 bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
12050 /* Augmentation. */
12053 *p++ = DW_CFA_advance_loc + 1;
12054 *p++ = DW_CFA_register;
12057 *p++ = DW_CFA_advance_loc + 4;
12058 *p++ = DW_CFA_restore_extended;
12061 /* Subsume any padding into the last FDE if user .eh_frame
12062 sections are aligned more than glink_eh_frame. Otherwise any
12063 zero padding will be seen as a terminator. */
12064 size = p - htab->glink_eh_frame->contents;
12066 align <<= htab->glink_eh_frame->output_section->alignment_power;
12068 pad = ((size + align) & ~align) - size;
12069 htab->glink_eh_frame->size = size + pad;
12070 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12073 /* Build the stubs as directed by the stub hash table. */
12074 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12076 if (htab->relbrlt != NULL)
12077 htab->relbrlt->reloc_count = 0;
12079 if (htab->plt_stub_align != 0)
12080 for (stub_sec = htab->stub_bfd->sections;
12082 stub_sec = stub_sec->next)
12083 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12084 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12085 & (-1 << htab->plt_stub_align));
12087 for (stub_sec = htab->stub_bfd->sections;
12089 stub_sec = stub_sec->next)
12090 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12092 stub_sec_count += 1;
12093 if (stub_sec->rawsize != stub_sec->size)
12097 if (stub_sec != NULL
12098 || htab->glink->rawsize != htab->glink->size
12099 || (htab->glink_eh_frame != NULL
12100 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12102 htab->stub_error = TRUE;
12103 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12106 if (htab->stub_error)
12111 *stats = bfd_malloc (500);
12112 if (*stats == NULL)
12115 sprintf (*stats, _("linker stubs in %u group%s\n"
12117 " toc adjust %lu\n"
12118 " long branch %lu\n"
12119 " long toc adj %lu\n"
12121 " plt call toc %lu"),
12123 stub_sec_count == 1 ? "" : "s",
12124 htab->stub_count[ppc_stub_long_branch - 1],
12125 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12126 htab->stub_count[ppc_stub_plt_branch - 1],
12127 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12128 htab->stub_count[ppc_stub_plt_call - 1],
12129 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12134 /* This function undoes the changes made by add_symbol_adjust. */
12137 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12139 struct ppc_link_hash_entry *eh;
12141 if (h->root.type == bfd_link_hash_indirect)
12144 eh = (struct ppc_link_hash_entry *) h;
12145 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12148 eh->elf.root.type = bfd_link_hash_undefined;
12153 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12155 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12158 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12161 /* What to do when ld finds relocations against symbols defined in
12162 discarded sections. */
12164 static unsigned int
12165 ppc64_elf_action_discarded (asection *sec)
12167 if (strcmp (".opd", sec->name) == 0)
12170 if (strcmp (".toc", sec->name) == 0)
12173 if (strcmp (".toc1", sec->name) == 0)
12176 return _bfd_elf_default_action_discarded (sec);
12179 /* The RELOCATE_SECTION function is called by the ELF backend linker
12180 to handle the relocations for a section.
12182 The relocs are always passed as Rela structures; if the section
12183 actually uses Rel structures, the r_addend field will always be
12186 This function is responsible for adjust the section contents as
12187 necessary, and (if using Rela relocs and generating a
12188 relocatable output file) adjusting the reloc addend as
12191 This function does not have to worry about setting the reloc
12192 address or the reloc symbol index.
12194 LOCAL_SYMS is a pointer to the swapped in local symbols.
12196 LOCAL_SECTIONS is an array giving the section in the input file
12197 corresponding to the st_shndx field of each local symbol.
12199 The global hash table entry for the global symbols can be found
12200 via elf_sym_hashes (input_bfd).
12202 When generating relocatable output, this function must handle
12203 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12204 going to be the section symbol corresponding to the output
12205 section, which means that the addend must be adjusted
12209 ppc64_elf_relocate_section (bfd *output_bfd,
12210 struct bfd_link_info *info,
12212 asection *input_section,
12213 bfd_byte *contents,
12214 Elf_Internal_Rela *relocs,
12215 Elf_Internal_Sym *local_syms,
12216 asection **local_sections)
12218 struct ppc_link_hash_table *htab;
12219 Elf_Internal_Shdr *symtab_hdr;
12220 struct elf_link_hash_entry **sym_hashes;
12221 Elf_Internal_Rela *rel;
12222 Elf_Internal_Rela *relend;
12223 Elf_Internal_Rela outrel;
12225 struct got_entry **local_got_ents;
12227 bfd_boolean ret = TRUE;
12228 bfd_boolean is_opd;
12229 /* Assume 'at' branch hints. */
12230 bfd_boolean is_isa_v2 = TRUE;
12231 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12233 /* Initialize howto table if needed. */
12234 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12237 htab = ppc_hash_table (info);
12241 /* Don't relocate stub sections. */
12242 if (input_section->owner == htab->stub_bfd)
12245 BFD_ASSERT (is_ppc64_elf (input_bfd));
12247 local_got_ents = elf_local_got_ents (input_bfd);
12248 TOCstart = elf_gp (output_bfd);
12249 symtab_hdr = &elf_symtab_hdr (input_bfd);
12250 sym_hashes = elf_sym_hashes (input_bfd);
12251 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12254 relend = relocs + input_section->reloc_count;
12255 for (; rel < relend; rel++)
12257 enum elf_ppc64_reloc_type r_type;
12259 bfd_reloc_status_type r;
12260 Elf_Internal_Sym *sym;
12262 struct elf_link_hash_entry *h_elf;
12263 struct ppc_link_hash_entry *h;
12264 struct ppc_link_hash_entry *fdh;
12265 const char *sym_name;
12266 unsigned long r_symndx, toc_symndx;
12267 bfd_vma toc_addend;
12268 unsigned char tls_mask, tls_gd, tls_type;
12269 unsigned char sym_type;
12270 bfd_vma relocation;
12271 bfd_boolean unresolved_reloc;
12272 bfd_boolean warned;
12275 struct ppc_stub_hash_entry *stub_entry;
12276 bfd_vma max_br_offset;
12278 const Elf_Internal_Rela orig_rel = *rel;
12280 r_type = ELF64_R_TYPE (rel->r_info);
12281 r_symndx = ELF64_R_SYM (rel->r_info);
12283 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12284 symbol of the previous ADDR64 reloc. The symbol gives us the
12285 proper TOC base to use. */
12286 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12288 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12290 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12296 unresolved_reloc = FALSE;
12299 if (r_symndx < symtab_hdr->sh_info)
12301 /* It's a local symbol. */
12302 struct _opd_sec_data *opd;
12304 sym = local_syms + r_symndx;
12305 sec = local_sections[r_symndx];
12306 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12307 sym_type = ELF64_ST_TYPE (sym->st_info);
12308 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12309 opd = get_opd_info (sec);
12310 if (opd != NULL && opd->adjust != NULL)
12312 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12317 /* If this is a relocation against the opd section sym
12318 and we have edited .opd, adjust the reloc addend so
12319 that ld -r and ld --emit-relocs output is correct.
12320 If it is a reloc against some other .opd symbol,
12321 then the symbol value will be adjusted later. */
12322 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12323 rel->r_addend += adjust;
12325 relocation += adjust;
12331 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12332 r_symndx, symtab_hdr, sym_hashes,
12333 h_elf, sec, relocation,
12334 unresolved_reloc, warned);
12335 sym_name = h_elf->root.root.string;
12336 sym_type = h_elf->type;
12338 && sec->owner == output_bfd
12339 && strcmp (sec->name, ".opd") == 0)
12341 /* This is a symbol defined in a linker script. All
12342 such are defined in output sections, even those
12343 defined by simple assignment from a symbol defined in
12344 an input section. Transfer the symbol to an
12345 appropriate input .opd section, so that a branch to
12346 this symbol will be mapped to the location specified
12347 by the opd entry. */
12348 struct bfd_link_order *lo;
12349 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
12350 if (lo->type == bfd_indirect_link_order)
12352 asection *isec = lo->u.indirect.section;
12353 if (h_elf->root.u.def.value >= isec->output_offset
12354 && h_elf->root.u.def.value < (isec->output_offset
12357 h_elf->root.u.def.value -= isec->output_offset;
12358 h_elf->root.u.def.section = isec;
12365 h = (struct ppc_link_hash_entry *) h_elf;
12367 if (sec != NULL && discarded_section (sec))
12368 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
12370 ppc64_elf_howto_table[r_type], 0,
12373 if (info->relocatable)
12376 /* TLS optimizations. Replace instruction sequences and relocs
12377 based on information we collected in tls_optimize. We edit
12378 RELOCS so that --emit-relocs will output something sensible
12379 for the final instruction stream. */
12384 tls_mask = h->tls_mask;
12385 else if (local_got_ents != NULL)
12387 struct plt_entry **local_plt = (struct plt_entry **)
12388 (local_got_ents + symtab_hdr->sh_info);
12389 unsigned char *lgot_masks = (unsigned char *)
12390 (local_plt + symtab_hdr->sh_info);
12391 tls_mask = lgot_masks[r_symndx];
12394 && (r_type == R_PPC64_TLS
12395 || r_type == R_PPC64_TLSGD
12396 || r_type == R_PPC64_TLSLD))
12398 /* Check for toc tls entries. */
12399 unsigned char *toc_tls;
12401 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12402 &local_syms, rel, input_bfd))
12406 tls_mask = *toc_tls;
12409 /* Check that tls relocs are used with tls syms, and non-tls
12410 relocs are used with non-tls syms. */
12411 if (r_symndx != STN_UNDEF
12412 && r_type != R_PPC64_NONE
12414 || h->elf.root.type == bfd_link_hash_defined
12415 || h->elf.root.type == bfd_link_hash_defweak)
12416 && (IS_PPC64_TLS_RELOC (r_type)
12417 != (sym_type == STT_TLS
12418 || (sym_type == STT_SECTION
12419 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
12422 && (r_type == R_PPC64_TLS
12423 || r_type == R_PPC64_TLSGD
12424 || r_type == R_PPC64_TLSLD))
12425 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12428 info->callbacks->einfo
12429 (!IS_PPC64_TLS_RELOC (r_type)
12430 ? _("%P: %H: %s used with TLS symbol %s\n")
12431 : _("%P: %H: %s used with non-TLS symbol %s\n"),
12432 input_bfd, input_section, rel->r_offset,
12433 ppc64_elf_howto_table[r_type]->name,
12437 /* Ensure reloc mapping code below stays sane. */
12438 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
12439 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
12440 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
12441 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
12442 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
12443 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
12444 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
12445 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
12446 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
12447 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
12455 case R_PPC64_LO_DS_OPT:
12456 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12457 if ((insn & (0x3f << 26)) != 58u << 26)
12459 insn += (14u << 26) - (58u << 26);
12460 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12461 r_type = R_PPC64_TOC16_LO;
12462 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12465 case R_PPC64_TOC16:
12466 case R_PPC64_TOC16_LO:
12467 case R_PPC64_TOC16_DS:
12468 case R_PPC64_TOC16_LO_DS:
12470 /* Check for toc tls entries. */
12471 unsigned char *toc_tls;
12474 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12475 &local_syms, rel, input_bfd);
12481 tls_mask = *toc_tls;
12482 if (r_type == R_PPC64_TOC16_DS
12483 || r_type == R_PPC64_TOC16_LO_DS)
12486 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
12491 /* If we found a GD reloc pair, then we might be
12492 doing a GD->IE transition. */
12495 tls_gd = TLS_TPRELGD;
12496 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12499 else if (retval == 3)
12501 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12509 case R_PPC64_GOT_TPREL16_HI:
12510 case R_PPC64_GOT_TPREL16_HA:
12512 && (tls_mask & TLS_TPREL) == 0)
12514 rel->r_offset -= d_offset;
12515 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12516 r_type = R_PPC64_NONE;
12517 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12521 case R_PPC64_GOT_TPREL16_DS:
12522 case R_PPC64_GOT_TPREL16_LO_DS:
12524 && (tls_mask & TLS_TPREL) == 0)
12527 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12529 insn |= 0x3c0d0000; /* addis 0,13,0 */
12530 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12531 r_type = R_PPC64_TPREL16_HA;
12532 if (toc_symndx != 0)
12534 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12535 rel->r_addend = toc_addend;
12536 /* We changed the symbol. Start over in order to
12537 get h, sym, sec etc. right. */
12542 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12548 && (tls_mask & TLS_TPREL) == 0)
12550 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
12551 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
12554 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12555 /* Was PPC64_TLS which sits on insn boundary, now
12556 PPC64_TPREL16_LO which is at low-order half-word. */
12557 rel->r_offset += d_offset;
12558 r_type = R_PPC64_TPREL16_LO;
12559 if (toc_symndx != 0)
12561 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12562 rel->r_addend = toc_addend;
12563 /* We changed the symbol. Start over in order to
12564 get h, sym, sec etc. right. */
12569 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12573 case R_PPC64_GOT_TLSGD16_HI:
12574 case R_PPC64_GOT_TLSGD16_HA:
12575 tls_gd = TLS_TPRELGD;
12576 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12580 case R_PPC64_GOT_TLSLD16_HI:
12581 case R_PPC64_GOT_TLSLD16_HA:
12582 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12585 if ((tls_mask & tls_gd) != 0)
12586 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12587 + R_PPC64_GOT_TPREL16_DS);
12590 rel->r_offset -= d_offset;
12591 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12592 r_type = R_PPC64_NONE;
12594 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12598 case R_PPC64_GOT_TLSGD16:
12599 case R_PPC64_GOT_TLSGD16_LO:
12600 tls_gd = TLS_TPRELGD;
12601 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12605 case R_PPC64_GOT_TLSLD16:
12606 case R_PPC64_GOT_TLSLD16_LO:
12607 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12609 unsigned int insn1, insn2, insn3;
12613 offset = (bfd_vma) -1;
12614 /* If not using the newer R_PPC64_TLSGD/LD to mark
12615 __tls_get_addr calls, we must trust that the call
12616 stays with its arg setup insns, ie. that the next
12617 reloc is the __tls_get_addr call associated with
12618 the current reloc. Edit both insns. */
12619 if (input_section->has_tls_get_addr_call
12620 && rel + 1 < relend
12621 && branch_reloc_hash_match (input_bfd, rel + 1,
12622 htab->tls_get_addr,
12623 htab->tls_get_addr_fd))
12624 offset = rel[1].r_offset;
12625 if ((tls_mask & tls_gd) != 0)
12628 insn1 = bfd_get_32 (output_bfd,
12629 contents + rel->r_offset - d_offset);
12630 insn1 &= (1 << 26) - (1 << 2);
12631 insn1 |= 58 << 26; /* ld */
12632 insn2 = 0x7c636a14; /* add 3,3,13 */
12633 if (offset != (bfd_vma) -1)
12634 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12635 if ((tls_mask & TLS_EXPLICIT) == 0)
12636 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12637 + R_PPC64_GOT_TPREL16_DS);
12639 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12640 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12645 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12646 insn2 = 0x38630000; /* addi 3,3,0 */
12649 /* Was an LD reloc. */
12651 sec = local_sections[toc_symndx];
12653 r_symndx < symtab_hdr->sh_info;
12655 if (local_sections[r_symndx] == sec)
12657 if (r_symndx >= symtab_hdr->sh_info)
12658 r_symndx = STN_UNDEF;
12659 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12660 if (r_symndx != STN_UNDEF)
12661 rel->r_addend -= (local_syms[r_symndx].st_value
12662 + sec->output_offset
12663 + sec->output_section->vma);
12665 else if (toc_symndx != 0)
12667 r_symndx = toc_symndx;
12668 rel->r_addend = toc_addend;
12670 r_type = R_PPC64_TPREL16_HA;
12671 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12672 if (offset != (bfd_vma) -1)
12674 rel[1].r_info = ELF64_R_INFO (r_symndx,
12675 R_PPC64_TPREL16_LO);
12676 rel[1].r_offset = offset + d_offset;
12677 rel[1].r_addend = rel->r_addend;
12680 bfd_put_32 (output_bfd, insn1,
12681 contents + rel->r_offset - d_offset);
12682 if (offset != (bfd_vma) -1)
12684 insn3 = bfd_get_32 (output_bfd,
12685 contents + offset + 4);
12687 || insn3 == CROR_151515 || insn3 == CROR_313131)
12689 rel[1].r_offset += 4;
12690 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12693 bfd_put_32 (output_bfd, insn2, contents + offset);
12695 if ((tls_mask & tls_gd) == 0
12696 && (tls_gd == 0 || toc_symndx != 0))
12698 /* We changed the symbol. Start over in order
12699 to get h, sym, sec etc. right. */
12706 case R_PPC64_TLSGD:
12707 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12709 unsigned int insn2, insn3;
12710 bfd_vma offset = rel->r_offset;
12712 if ((tls_mask & TLS_TPRELGD) != 0)
12715 r_type = R_PPC64_NONE;
12716 insn2 = 0x7c636a14; /* add 3,3,13 */
12721 if (toc_symndx != 0)
12723 r_symndx = toc_symndx;
12724 rel->r_addend = toc_addend;
12726 r_type = R_PPC64_TPREL16_LO;
12727 rel->r_offset = offset + d_offset;
12728 insn2 = 0x38630000; /* addi 3,3,0 */
12730 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12731 /* Zap the reloc on the _tls_get_addr call too. */
12732 BFD_ASSERT (offset == rel[1].r_offset);
12733 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12734 insn3 = bfd_get_32 (output_bfd,
12735 contents + offset + 4);
12737 || insn3 == CROR_151515 || insn3 == CROR_313131)
12739 rel->r_offset += 4;
12740 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12743 bfd_put_32 (output_bfd, insn2, contents + offset);
12744 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12752 case R_PPC64_TLSLD:
12753 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12755 unsigned int insn2, insn3;
12756 bfd_vma offset = rel->r_offset;
12759 sec = local_sections[toc_symndx];
12761 r_symndx < symtab_hdr->sh_info;
12763 if (local_sections[r_symndx] == sec)
12765 if (r_symndx >= symtab_hdr->sh_info)
12766 r_symndx = STN_UNDEF;
12767 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12768 if (r_symndx != STN_UNDEF)
12769 rel->r_addend -= (local_syms[r_symndx].st_value
12770 + sec->output_offset
12771 + sec->output_section->vma);
12773 r_type = R_PPC64_TPREL16_LO;
12774 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12775 rel->r_offset = offset + d_offset;
12776 /* Zap the reloc on the _tls_get_addr call too. */
12777 BFD_ASSERT (offset == rel[1].r_offset);
12778 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12779 insn2 = 0x38630000; /* addi 3,3,0 */
12780 insn3 = bfd_get_32 (output_bfd,
12781 contents + offset + 4);
12783 || insn3 == CROR_151515 || insn3 == CROR_313131)
12785 rel->r_offset += 4;
12786 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12789 bfd_put_32 (output_bfd, insn2, contents + offset);
12795 case R_PPC64_DTPMOD64:
12796 if (rel + 1 < relend
12797 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12798 && rel[1].r_offset == rel->r_offset + 8)
12800 if ((tls_mask & TLS_GD) == 0)
12802 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12803 if ((tls_mask & TLS_TPRELGD) != 0)
12804 r_type = R_PPC64_TPREL64;
12807 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12808 r_type = R_PPC64_NONE;
12810 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12815 if ((tls_mask & TLS_LD) == 0)
12817 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12818 r_type = R_PPC64_NONE;
12819 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12824 case R_PPC64_TPREL64:
12825 if ((tls_mask & TLS_TPREL) == 0)
12827 r_type = R_PPC64_NONE;
12828 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12833 /* Handle other relocations that tweak non-addend part of insn. */
12835 max_br_offset = 1 << 25;
12836 addend = rel->r_addend;
12842 case R_PPC64_TOCSAVE:
12843 if (relocation + addend == (rel->r_offset
12844 + input_section->output_offset
12845 + input_section->output_section->vma)
12846 && tocsave_find (htab, NO_INSERT,
12847 &local_syms, rel, input_bfd))
12849 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
12851 || insn == CROR_151515 || insn == CROR_313131)
12852 bfd_put_32 (input_bfd, STD_R2_40R1,
12853 contents + rel->r_offset);
12857 /* Branch taken prediction relocations. */
12858 case R_PPC64_ADDR14_BRTAKEN:
12859 case R_PPC64_REL14_BRTAKEN:
12860 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12863 /* Branch not taken prediction relocations. */
12864 case R_PPC64_ADDR14_BRNTAKEN:
12865 case R_PPC64_REL14_BRNTAKEN:
12866 insn |= bfd_get_32 (output_bfd,
12867 contents + rel->r_offset) & ~(0x01 << 21);
12870 case R_PPC64_REL14:
12871 max_br_offset = 1 << 15;
12874 case R_PPC64_REL24:
12875 /* Calls to functions with a different TOC, such as calls to
12876 shared objects, need to alter the TOC pointer. This is
12877 done using a linkage stub. A REL24 branching to these
12878 linkage stubs needs to be followed by a nop, as the nop
12879 will be replaced with an instruction to restore the TOC
12884 && h->oh->is_func_descriptor)
12885 fdh = ppc_follow_link (h->oh);
12886 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
12888 if (stub_entry != NULL
12889 && (stub_entry->stub_type == ppc_stub_plt_call
12890 || stub_entry->stub_type == ppc_stub_plt_call_r2save
12891 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12892 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
12894 bfd_boolean can_plt_call = FALSE;
12896 if (rel->r_offset + 8 <= input_section->size)
12899 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12901 || nop == CROR_151515 || nop == CROR_313131)
12904 && (h == htab->tls_get_addr_fd
12905 || h == htab->tls_get_addr)
12906 && !htab->no_tls_get_addr_opt)
12908 /* Special stub used, leave nop alone. */
12911 bfd_put_32 (input_bfd, LD_R2_40R1,
12912 contents + rel->r_offset + 4);
12913 can_plt_call = TRUE;
12919 if (stub_entry->stub_type == ppc_stub_plt_call
12920 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12922 /* If this is a plain branch rather than a branch
12923 and link, don't require a nop. However, don't
12924 allow tail calls in a shared library as they
12925 will result in r2 being corrupted. */
12927 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
12928 if (info->executable && (br & 1) == 0)
12929 can_plt_call = TRUE;
12934 && strcmp (h->elf.root.root.string,
12935 ".__libc_start_main") == 0)
12937 /* Allow crt1 branch to go via a toc adjusting stub. */
12938 can_plt_call = TRUE;
12942 if (strcmp (input_section->output_section->name,
12944 || strcmp (input_section->output_section->name,
12946 info->callbacks->einfo
12947 (_("%P: %H: automatic multiple TOCs "
12948 "not supported using your crt files; "
12949 "recompile with -mminimal-toc or upgrade gcc\n"),
12950 input_bfd, input_section, rel->r_offset);
12952 info->callbacks->einfo
12953 (_("%P: %H: sibling call optimization to `%s' "
12954 "does not allow automatic multiple TOCs; "
12955 "recompile with -mminimal-toc or "
12956 "-fno-optimize-sibling-calls, "
12957 "or make `%s' extern\n"),
12958 input_bfd, input_section, rel->r_offset,
12961 bfd_set_error (bfd_error_bad_value);
12967 && (stub_entry->stub_type == ppc_stub_plt_call
12968 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
12969 unresolved_reloc = FALSE;
12972 if ((stub_entry == NULL
12973 || stub_entry->stub_type == ppc_stub_long_branch
12974 || stub_entry->stub_type == ppc_stub_plt_branch)
12975 && get_opd_info (sec) != NULL)
12977 /* The branch destination is the value of the opd entry. */
12978 bfd_vma off = (relocation + addend
12979 - sec->output_section->vma
12980 - sec->output_offset);
12981 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
12982 if (dest != (bfd_vma) -1)
12989 /* If the branch is out of reach we ought to have a long
12991 from = (rel->r_offset
12992 + input_section->output_offset
12993 + input_section->output_section->vma);
12995 if (stub_entry != NULL
12996 && (stub_entry->stub_type == ppc_stub_long_branch
12997 || stub_entry->stub_type == ppc_stub_plt_branch)
12998 && (r_type == R_PPC64_ADDR14_BRTAKEN
12999 || r_type == R_PPC64_ADDR14_BRNTAKEN
13000 || (relocation + addend - from + max_br_offset
13001 < 2 * max_br_offset)))
13002 /* Don't use the stub if this branch is in range. */
13005 if (stub_entry != NULL)
13007 /* Munge up the value and addend so that we call the stub
13008 rather than the procedure directly. */
13009 relocation = (stub_entry->stub_offset
13010 + stub_entry->stub_sec->output_offset
13011 + stub_entry->stub_sec->output_section->vma);
13014 if ((stub_entry->stub_type == ppc_stub_plt_call
13015 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13016 && (ALWAYS_EMIT_R2SAVE
13017 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13018 && rel + 1 < relend
13019 && rel[1].r_offset == rel->r_offset + 4
13020 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13028 /* Set 'a' bit. This is 0b00010 in BO field for branch
13029 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13030 for branch on CTR insns (BO == 1a00t or 1a01t). */
13031 if ((insn & (0x14 << 21)) == (0x04 << 21))
13032 insn |= 0x02 << 21;
13033 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13034 insn |= 0x08 << 21;
13040 /* Invert 'y' bit if not the default. */
13041 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13042 insn ^= 0x01 << 21;
13045 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13048 /* NOP out calls to undefined weak functions.
13049 We can thus call a weak function without first
13050 checking whether the function is defined. */
13052 && h->elf.root.type == bfd_link_hash_undefweak
13053 && h->elf.dynindx == -1
13054 && r_type == R_PPC64_REL24
13058 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13064 /* Set `addend'. */
13069 info->callbacks->einfo
13070 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
13071 input_bfd, (int) r_type, sym_name);
13073 bfd_set_error (bfd_error_bad_value);
13079 case R_PPC64_TLSGD:
13080 case R_PPC64_TLSLD:
13081 case R_PPC64_TOCSAVE:
13082 case R_PPC64_GNU_VTINHERIT:
13083 case R_PPC64_GNU_VTENTRY:
13086 /* GOT16 relocations. Like an ADDR16 using the symbol's
13087 address in the GOT as relocation value instead of the
13088 symbol's value itself. Also, create a GOT entry for the
13089 symbol and put the symbol value there. */
13090 case R_PPC64_GOT_TLSGD16:
13091 case R_PPC64_GOT_TLSGD16_LO:
13092 case R_PPC64_GOT_TLSGD16_HI:
13093 case R_PPC64_GOT_TLSGD16_HA:
13094 tls_type = TLS_TLS | TLS_GD;
13097 case R_PPC64_GOT_TLSLD16:
13098 case R_PPC64_GOT_TLSLD16_LO:
13099 case R_PPC64_GOT_TLSLD16_HI:
13100 case R_PPC64_GOT_TLSLD16_HA:
13101 tls_type = TLS_TLS | TLS_LD;
13104 case R_PPC64_GOT_TPREL16_DS:
13105 case R_PPC64_GOT_TPREL16_LO_DS:
13106 case R_PPC64_GOT_TPREL16_HI:
13107 case R_PPC64_GOT_TPREL16_HA:
13108 tls_type = TLS_TLS | TLS_TPREL;
13111 case R_PPC64_GOT_DTPREL16_DS:
13112 case R_PPC64_GOT_DTPREL16_LO_DS:
13113 case R_PPC64_GOT_DTPREL16_HI:
13114 case R_PPC64_GOT_DTPREL16_HA:
13115 tls_type = TLS_TLS | TLS_DTPREL;
13118 case R_PPC64_GOT16:
13119 case R_PPC64_GOT16_LO:
13120 case R_PPC64_GOT16_HI:
13121 case R_PPC64_GOT16_HA:
13122 case R_PPC64_GOT16_DS:
13123 case R_PPC64_GOT16_LO_DS:
13126 /* Relocation is to the entry for this symbol in the global
13131 unsigned long indx = 0;
13132 struct got_entry *ent;
13134 if (tls_type == (TLS_TLS | TLS_LD)
13136 || !h->elf.def_dynamic))
13137 ent = ppc64_tlsld_got (input_bfd);
13143 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13144 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13147 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13148 /* This is actually a static link, or it is a
13149 -Bsymbolic link and the symbol is defined
13150 locally, or the symbol was forced to be local
13151 because of a version file. */
13155 BFD_ASSERT (h->elf.dynindx != -1);
13156 indx = h->elf.dynindx;
13157 unresolved_reloc = FALSE;
13159 ent = h->elf.got.glist;
13163 if (local_got_ents == NULL)
13165 ent = local_got_ents[r_symndx];
13168 for (; ent != NULL; ent = ent->next)
13169 if (ent->addend == orig_rel.r_addend
13170 && ent->owner == input_bfd
13171 && ent->tls_type == tls_type)
13177 if (ent->is_indirect)
13178 ent = ent->got.ent;
13179 offp = &ent->got.offset;
13180 got = ppc64_elf_tdata (ent->owner)->got;
13184 /* The offset must always be a multiple of 8. We use the
13185 least significant bit to record whether we have already
13186 processed this entry. */
13188 if ((off & 1) != 0)
13192 /* Generate relocs for the dynamic linker, except in
13193 the case of TLSLD where we'll use one entry per
13201 ? h->elf.type == STT_GNU_IFUNC
13202 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13203 if ((info->shared || indx != 0)
13205 || (tls_type == (TLS_TLS | TLS_LD)
13206 && !h->elf.def_dynamic)
13207 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13208 || h->elf.root.type != bfd_link_hash_undefweak))
13209 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13211 relgot = htab->reliplt;
13212 if (relgot != NULL)
13214 outrel.r_offset = (got->output_section->vma
13215 + got->output_offset
13217 outrel.r_addend = addend;
13218 if (tls_type & (TLS_LD | TLS_GD))
13220 outrel.r_addend = 0;
13221 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13222 if (tls_type == (TLS_TLS | TLS_GD))
13224 loc = relgot->contents;
13225 loc += (relgot->reloc_count++
13226 * sizeof (Elf64_External_Rela));
13227 bfd_elf64_swap_reloca_out (output_bfd,
13229 outrel.r_offset += 8;
13230 outrel.r_addend = addend;
13232 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13235 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13236 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13237 else if (tls_type == (TLS_TLS | TLS_TPREL))
13238 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13239 else if (indx != 0)
13240 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13244 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13246 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13248 /* Write the .got section contents for the sake
13250 loc = got->contents + off;
13251 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13255 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13257 outrel.r_addend += relocation;
13258 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13259 outrel.r_addend -= htab->elf.tls_sec->vma;
13261 loc = relgot->contents;
13262 loc += (relgot->reloc_count++
13263 * sizeof (Elf64_External_Rela));
13264 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13267 /* Init the .got section contents here if we're not
13268 emitting a reloc. */
13271 relocation += addend;
13272 if (tls_type == (TLS_TLS | TLS_LD))
13274 else if (tls_type != 0)
13276 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13277 if (tls_type == (TLS_TLS | TLS_TPREL))
13278 relocation += DTP_OFFSET - TP_OFFSET;
13280 if (tls_type == (TLS_TLS | TLS_GD))
13282 bfd_put_64 (output_bfd, relocation,
13283 got->contents + off + 8);
13288 bfd_put_64 (output_bfd, relocation,
13289 got->contents + off);
13293 if (off >= (bfd_vma) -2)
13296 relocation = got->output_section->vma + got->output_offset + off;
13297 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
13301 case R_PPC64_PLT16_HA:
13302 case R_PPC64_PLT16_HI:
13303 case R_PPC64_PLT16_LO:
13304 case R_PPC64_PLT32:
13305 case R_PPC64_PLT64:
13306 /* Relocation is to the entry for this symbol in the
13307 procedure linkage table. */
13309 /* Resolve a PLT reloc against a local symbol directly,
13310 without using the procedure linkage table. */
13314 /* It's possible that we didn't make a PLT entry for this
13315 symbol. This happens when statically linking PIC code,
13316 or when using -Bsymbolic. Go find a match if there is a
13318 if (htab->plt != NULL)
13320 struct plt_entry *ent;
13321 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
13322 if (ent->addend == orig_rel.r_addend
13323 && ent->plt.offset != (bfd_vma) -1)
13325 relocation = (htab->plt->output_section->vma
13326 + htab->plt->output_offset
13327 + ent->plt.offset);
13328 unresolved_reloc = FALSE;
13334 /* Relocation value is TOC base. */
13335 relocation = TOCstart;
13336 if (r_symndx == STN_UNDEF)
13337 relocation += htab->stub_group[input_section->id].toc_off;
13338 else if (unresolved_reloc)
13340 else if (sec != NULL && sec->id <= htab->top_id)
13341 relocation += htab->stub_group[sec->id].toc_off;
13343 unresolved_reloc = TRUE;
13346 /* TOC16 relocs. We want the offset relative to the TOC base,
13347 which is the address of the start of the TOC plus 0x8000.
13348 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13350 case R_PPC64_TOC16:
13351 case R_PPC64_TOC16_LO:
13352 case R_PPC64_TOC16_HI:
13353 case R_PPC64_TOC16_DS:
13354 case R_PPC64_TOC16_LO_DS:
13355 case R_PPC64_TOC16_HA:
13356 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
13359 /* Relocate against the beginning of the section. */
13360 case R_PPC64_SECTOFF:
13361 case R_PPC64_SECTOFF_LO:
13362 case R_PPC64_SECTOFF_HI:
13363 case R_PPC64_SECTOFF_DS:
13364 case R_PPC64_SECTOFF_LO_DS:
13365 case R_PPC64_SECTOFF_HA:
13367 addend -= sec->output_section->vma;
13370 case R_PPC64_REL16:
13371 case R_PPC64_REL16_LO:
13372 case R_PPC64_REL16_HI:
13373 case R_PPC64_REL16_HA:
13376 case R_PPC64_REL14:
13377 case R_PPC64_REL14_BRNTAKEN:
13378 case R_PPC64_REL14_BRTAKEN:
13379 case R_PPC64_REL24:
13382 case R_PPC64_TPREL16:
13383 case R_PPC64_TPREL16_LO:
13384 case R_PPC64_TPREL16_HI:
13385 case R_PPC64_TPREL16_HA:
13386 case R_PPC64_TPREL16_DS:
13387 case R_PPC64_TPREL16_LO_DS:
13388 case R_PPC64_TPREL16_HIGHER:
13389 case R_PPC64_TPREL16_HIGHERA:
13390 case R_PPC64_TPREL16_HIGHEST:
13391 case R_PPC64_TPREL16_HIGHESTA:
13393 && h->elf.root.type == bfd_link_hash_undefweak
13394 && h->elf.dynindx == -1)
13396 /* Make this relocation against an undefined weak symbol
13397 resolve to zero. This is really just a tweak, since
13398 code using weak externs ought to check that they are
13399 defined before using them. */
13400 bfd_byte *p = contents + rel->r_offset - d_offset;
13402 insn = bfd_get_32 (output_bfd, p);
13403 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
13405 bfd_put_32 (output_bfd, insn, p);
13408 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13410 /* The TPREL16 relocs shouldn't really be used in shared
13411 libs as they will result in DT_TEXTREL being set, but
13412 support them anyway. */
13416 case R_PPC64_DTPREL16:
13417 case R_PPC64_DTPREL16_LO:
13418 case R_PPC64_DTPREL16_HI:
13419 case R_PPC64_DTPREL16_HA:
13420 case R_PPC64_DTPREL16_DS:
13421 case R_PPC64_DTPREL16_LO_DS:
13422 case R_PPC64_DTPREL16_HIGHER:
13423 case R_PPC64_DTPREL16_HIGHERA:
13424 case R_PPC64_DTPREL16_HIGHEST:
13425 case R_PPC64_DTPREL16_HIGHESTA:
13426 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13429 case R_PPC64_DTPMOD64:
13434 case R_PPC64_TPREL64:
13435 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13438 case R_PPC64_DTPREL64:
13439 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13442 /* Relocations that may need to be propagated if this is a
13444 case R_PPC64_REL30:
13445 case R_PPC64_REL32:
13446 case R_PPC64_REL64:
13447 case R_PPC64_ADDR14:
13448 case R_PPC64_ADDR14_BRNTAKEN:
13449 case R_PPC64_ADDR14_BRTAKEN:
13450 case R_PPC64_ADDR16:
13451 case R_PPC64_ADDR16_DS:
13452 case R_PPC64_ADDR16_HA:
13453 case R_PPC64_ADDR16_HI:
13454 case R_PPC64_ADDR16_HIGHER:
13455 case R_PPC64_ADDR16_HIGHERA:
13456 case R_PPC64_ADDR16_HIGHEST:
13457 case R_PPC64_ADDR16_HIGHESTA:
13458 case R_PPC64_ADDR16_LO:
13459 case R_PPC64_ADDR16_LO_DS:
13460 case R_PPC64_ADDR24:
13461 case R_PPC64_ADDR32:
13462 case R_PPC64_ADDR64:
13463 case R_PPC64_UADDR16:
13464 case R_PPC64_UADDR32:
13465 case R_PPC64_UADDR64:
13467 if ((input_section->flags & SEC_ALLOC) == 0)
13470 if (NO_OPD_RELOCS && is_opd)
13475 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13476 || h->elf.root.type != bfd_link_hash_undefweak)
13477 && (must_be_dyn_reloc (info, r_type)
13478 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
13479 || (ELIMINATE_COPY_RELOCS
13482 && h->elf.dynindx != -1
13483 && !h->elf.non_got_ref
13484 && !h->elf.def_regular)
13487 ? h->elf.type == STT_GNU_IFUNC
13488 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
13490 bfd_boolean skip, relocate;
13494 /* When generating a dynamic object, these relocations
13495 are copied into the output file to be resolved at run
13501 out_off = _bfd_elf_section_offset (output_bfd, info,
13502 input_section, rel->r_offset);
13503 if (out_off == (bfd_vma) -1)
13505 else if (out_off == (bfd_vma) -2)
13506 skip = TRUE, relocate = TRUE;
13507 out_off += (input_section->output_section->vma
13508 + input_section->output_offset);
13509 outrel.r_offset = out_off;
13510 outrel.r_addend = rel->r_addend;
13512 /* Optimize unaligned reloc use. */
13513 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
13514 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
13515 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
13516 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
13517 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
13518 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
13519 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
13520 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
13521 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
13524 memset (&outrel, 0, sizeof outrel);
13525 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
13527 && r_type != R_PPC64_TOC)
13529 BFD_ASSERT (h->elf.dynindx != -1);
13530 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
13534 /* This symbol is local, or marked to become local,
13535 or this is an opd section reloc which must point
13536 at a local function. */
13537 outrel.r_addend += relocation;
13538 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
13540 if (is_opd && h != NULL)
13542 /* Lie about opd entries. This case occurs
13543 when building shared libraries and we
13544 reference a function in another shared
13545 lib. The same thing happens for a weak
13546 definition in an application that's
13547 overridden by a strong definition in a
13548 shared lib. (I believe this is a generic
13549 bug in binutils handling of weak syms.)
13550 In these cases we won't use the opd
13551 entry in this lib. */
13552 unresolved_reloc = FALSE;
13555 && r_type == R_PPC64_ADDR64
13557 ? h->elf.type == STT_GNU_IFUNC
13558 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
13559 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13562 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13564 /* We need to relocate .opd contents for ld.so.
13565 Prelink also wants simple and consistent rules
13566 for relocs. This make all RELATIVE relocs have
13567 *r_offset equal to r_addend. */
13576 ? h->elf.type == STT_GNU_IFUNC
13577 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13579 info->callbacks->einfo
13580 (_("%P: %H: relocation %s for indirect "
13581 "function %s unsupported\n"),
13582 input_bfd, input_section, rel->r_offset,
13583 ppc64_elf_howto_table[r_type]->name,
13587 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
13589 else if (sec == NULL || sec->owner == NULL)
13591 bfd_set_error (bfd_error_bad_value);
13598 osec = sec->output_section;
13599 indx = elf_section_data (osec)->dynindx;
13603 if ((osec->flags & SEC_READONLY) == 0
13604 && htab->elf.data_index_section != NULL)
13605 osec = htab->elf.data_index_section;
13607 osec = htab->elf.text_index_section;
13608 indx = elf_section_data (osec)->dynindx;
13610 BFD_ASSERT (indx != 0);
13612 /* We are turning this relocation into one
13613 against a section symbol, so subtract out
13614 the output section's address but not the
13615 offset of the input section in the output
13617 outrel.r_addend -= osec->vma;
13620 outrel.r_info = ELF64_R_INFO (indx, r_type);
13624 sreloc = elf_section_data (input_section)->sreloc;
13625 if (!htab->elf.dynamic_sections_created)
13626 sreloc = htab->reliplt;
13627 if (sreloc == NULL)
13630 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13633 loc = sreloc->contents;
13634 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13635 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13637 /* If this reloc is against an external symbol, it will
13638 be computed at runtime, so there's no need to do
13639 anything now. However, for the sake of prelink ensure
13640 that the section contents are a known value. */
13643 unresolved_reloc = FALSE;
13644 /* The value chosen here is quite arbitrary as ld.so
13645 ignores section contents except for the special
13646 case of .opd where the contents might be accessed
13647 before relocation. Choose zero, as that won't
13648 cause reloc overflow. */
13651 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13652 to improve backward compatibility with older
13654 if (r_type == R_PPC64_ADDR64)
13655 addend = outrel.r_addend;
13656 /* Adjust pc_relative relocs to have zero in *r_offset. */
13657 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13658 addend = (input_section->output_section->vma
13659 + input_section->output_offset
13666 case R_PPC64_GLOB_DAT:
13667 case R_PPC64_JMP_SLOT:
13668 case R_PPC64_JMP_IREL:
13669 case R_PPC64_RELATIVE:
13670 /* We shouldn't ever see these dynamic relocs in relocatable
13672 /* Fall through. */
13674 case R_PPC64_PLTGOT16:
13675 case R_PPC64_PLTGOT16_DS:
13676 case R_PPC64_PLTGOT16_HA:
13677 case R_PPC64_PLTGOT16_HI:
13678 case R_PPC64_PLTGOT16_LO:
13679 case R_PPC64_PLTGOT16_LO_DS:
13680 case R_PPC64_PLTREL32:
13681 case R_PPC64_PLTREL64:
13682 /* These ones haven't been implemented yet. */
13684 info->callbacks->einfo
13685 (_("%P: %B: relocation %s is not supported for symbol %s\n"),
13687 ppc64_elf_howto_table[r_type]->name, sym_name);
13689 bfd_set_error (bfd_error_invalid_operation);
13694 /* Multi-instruction sequences that access the TOC can be
13695 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13696 to nop; addi rb,r2,x; */
13702 case R_PPC64_GOT_TLSLD16_HI:
13703 case R_PPC64_GOT_TLSGD16_HI:
13704 case R_PPC64_GOT_TPREL16_HI:
13705 case R_PPC64_GOT_DTPREL16_HI:
13706 case R_PPC64_GOT16_HI:
13707 case R_PPC64_TOC16_HI:
13708 /* These relocs would only be useful if building up an
13709 offset to later add to r2, perhaps in an indexed
13710 addressing mode instruction. Don't try to optimize.
13711 Unfortunately, the possibility of someone building up an
13712 offset like this or even with the HA relocs, means that
13713 we need to check the high insn when optimizing the low
13717 case R_PPC64_GOT_TLSLD16_HA:
13718 case R_PPC64_GOT_TLSGD16_HA:
13719 case R_PPC64_GOT_TPREL16_HA:
13720 case R_PPC64_GOT_DTPREL16_HA:
13721 case R_PPC64_GOT16_HA:
13722 case R_PPC64_TOC16_HA:
13723 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13724 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13726 bfd_byte *p = contents + (rel->r_offset & ~3);
13727 bfd_put_32 (input_bfd, NOP, p);
13731 case R_PPC64_GOT_TLSLD16_LO:
13732 case R_PPC64_GOT_TLSGD16_LO:
13733 case R_PPC64_GOT_TPREL16_LO_DS:
13734 case R_PPC64_GOT_DTPREL16_LO_DS:
13735 case R_PPC64_GOT16_LO:
13736 case R_PPC64_GOT16_LO_DS:
13737 case R_PPC64_TOC16_LO:
13738 case R_PPC64_TOC16_LO_DS:
13739 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13740 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13742 bfd_byte *p = contents + (rel->r_offset & ~3);
13743 insn = bfd_get_32 (input_bfd, p);
13744 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
13746 /* Transform addic to addi when we change reg. */
13747 insn &= ~((0x3f << 26) | (0x1f << 16));
13748 insn |= (14u << 26) | (2 << 16);
13752 insn &= ~(0x1f << 16);
13755 bfd_put_32 (input_bfd, insn, p);
13760 /* Do any further special processing. */
13766 case R_PPC64_ADDR16_HA:
13767 case R_PPC64_REL16_HA:
13768 case R_PPC64_ADDR16_HIGHERA:
13769 case R_PPC64_ADDR16_HIGHESTA:
13770 case R_PPC64_TOC16_HA:
13771 case R_PPC64_SECTOFF_HA:
13772 case R_PPC64_TPREL16_HA:
13773 case R_PPC64_DTPREL16_HA:
13774 case R_PPC64_TPREL16_HIGHER:
13775 case R_PPC64_TPREL16_HIGHERA:
13776 case R_PPC64_TPREL16_HIGHEST:
13777 case R_PPC64_TPREL16_HIGHESTA:
13778 case R_PPC64_DTPREL16_HIGHER:
13779 case R_PPC64_DTPREL16_HIGHERA:
13780 case R_PPC64_DTPREL16_HIGHEST:
13781 case R_PPC64_DTPREL16_HIGHESTA:
13782 /* It's just possible that this symbol is a weak symbol
13783 that's not actually defined anywhere. In that case,
13784 'sec' would be NULL, and we should leave the symbol
13785 alone (it will be set to zero elsewhere in the link). */
13790 case R_PPC64_GOT16_HA:
13791 case R_PPC64_PLTGOT16_HA:
13792 case R_PPC64_PLT16_HA:
13793 case R_PPC64_GOT_TLSGD16_HA:
13794 case R_PPC64_GOT_TLSLD16_HA:
13795 case R_PPC64_GOT_TPREL16_HA:
13796 case R_PPC64_GOT_DTPREL16_HA:
13797 /* Add 0x10000 if sign bit in 0:15 is set.
13798 Bits 0:15 are not used. */
13802 case R_PPC64_ADDR16_DS:
13803 case R_PPC64_ADDR16_LO_DS:
13804 case R_PPC64_GOT16_DS:
13805 case R_PPC64_GOT16_LO_DS:
13806 case R_PPC64_PLT16_LO_DS:
13807 case R_PPC64_SECTOFF_DS:
13808 case R_PPC64_SECTOFF_LO_DS:
13809 case R_PPC64_TOC16_DS:
13810 case R_PPC64_TOC16_LO_DS:
13811 case R_PPC64_PLTGOT16_DS:
13812 case R_PPC64_PLTGOT16_LO_DS:
13813 case R_PPC64_GOT_TPREL16_DS:
13814 case R_PPC64_GOT_TPREL16_LO_DS:
13815 case R_PPC64_GOT_DTPREL16_DS:
13816 case R_PPC64_GOT_DTPREL16_LO_DS:
13817 case R_PPC64_TPREL16_DS:
13818 case R_PPC64_TPREL16_LO_DS:
13819 case R_PPC64_DTPREL16_DS:
13820 case R_PPC64_DTPREL16_LO_DS:
13821 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13823 /* If this reloc is against an lq insn, then the value must be
13824 a multiple of 16. This is somewhat of a hack, but the
13825 "correct" way to do this by defining _DQ forms of all the
13826 _DS relocs bloats all reloc switches in this file. It
13827 doesn't seem to make much sense to use any of these relocs
13828 in data, so testing the insn should be safe. */
13829 if ((insn & (0x3f << 26)) == (56u << 26))
13831 if (((relocation + addend) & mask) != 0)
13833 info->callbacks->einfo
13834 (_("%P: %H: error: %s not a multiple of %u\n"),
13835 input_bfd, input_section, rel->r_offset,
13836 ppc64_elf_howto_table[r_type]->name,
13838 bfd_set_error (bfd_error_bad_value);
13845 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13846 because such sections are not SEC_ALLOC and thus ld.so will
13847 not process them. */
13848 if (unresolved_reloc
13849 && !((input_section->flags & SEC_DEBUGGING) != 0
13850 && h->elf.def_dynamic)
13851 && _bfd_elf_section_offset (output_bfd, info, input_section,
13852 rel->r_offset) != (bfd_vma) -1)
13854 info->callbacks->einfo
13855 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
13856 input_bfd, input_section, rel->r_offset,
13857 ppc64_elf_howto_table[(int) r_type]->name,
13858 h->elf.root.root.string);
13862 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
13870 if (r != bfd_reloc_ok)
13872 if (sym_name == NULL)
13873 sym_name = "(null)";
13874 if (r == bfd_reloc_overflow)
13879 && h->elf.root.type == bfd_link_hash_undefweak
13880 && ppc64_elf_howto_table[r_type]->pc_relative)
13882 /* Assume this is a call protected by other code that
13883 detects the symbol is undefined. If this is the case,
13884 we can safely ignore the overflow. If not, the
13885 program is hosed anyway, and a little warning isn't
13891 if (!((*info->callbacks->reloc_overflow)
13892 (info, (h ? &h->elf.root : NULL), sym_name,
13893 ppc64_elf_howto_table[r_type]->name,
13894 orig_rel.r_addend, input_bfd, input_section,
13900 info->callbacks->einfo
13901 (_("%P: %H: %s reloc against `%s': error %d\n"),
13902 input_bfd, input_section, rel->r_offset,
13903 ppc64_elf_howto_table[r_type]->name,
13911 /* If we're emitting relocations, then shortly after this function
13912 returns, reloc offsets and addends for this section will be
13913 adjusted. Worse, reloc symbol indices will be for the output
13914 file rather than the input. Save a copy of the relocs for
13915 opd_entry_value. */
13916 if (is_opd && (info->emitrelocations || info->relocatable))
13919 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13920 rel = bfd_alloc (input_bfd, amt);
13921 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13922 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13925 memcpy (rel, relocs, amt);
13930 /* Adjust the value of any local symbols in opd sections. */
13933 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13934 const char *name ATTRIBUTE_UNUSED,
13935 Elf_Internal_Sym *elfsym,
13936 asection *input_sec,
13937 struct elf_link_hash_entry *h)
13939 struct _opd_sec_data *opd;
13946 opd = get_opd_info (input_sec);
13947 if (opd == NULL || opd->adjust == NULL)
13950 value = elfsym->st_value - input_sec->output_offset;
13951 if (!info->relocatable)
13952 value -= input_sec->output_section->vma;
13954 adjust = opd->adjust[value / 8];
13958 elfsym->st_value += adjust;
13962 /* Finish up dynamic symbol handling. We set the contents of various
13963 dynamic sections here. */
13966 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13967 struct bfd_link_info *info,
13968 struct elf_link_hash_entry *h,
13969 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
13971 struct ppc_link_hash_table *htab;
13972 struct plt_entry *ent;
13973 Elf_Internal_Rela rela;
13976 htab = ppc_hash_table (info);
13980 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13981 if (ent->plt.offset != (bfd_vma) -1)
13983 /* This symbol has an entry in the procedure linkage
13984 table. Set it up. */
13985 if (!htab->elf.dynamic_sections_created
13986 || h->dynindx == -1)
13988 BFD_ASSERT (h->type == STT_GNU_IFUNC
13990 && (h->root.type == bfd_link_hash_defined
13991 || h->root.type == bfd_link_hash_defweak));
13992 rela.r_offset = (htab->iplt->output_section->vma
13993 + htab->iplt->output_offset
13994 + ent->plt.offset);
13995 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13996 rela.r_addend = (h->root.u.def.value
13997 + h->root.u.def.section->output_offset
13998 + h->root.u.def.section->output_section->vma
14000 loc = (htab->reliplt->contents
14001 + (htab->reliplt->reloc_count++
14002 * sizeof (Elf64_External_Rela)));
14006 rela.r_offset = (htab->plt->output_section->vma
14007 + htab->plt->output_offset
14008 + ent->plt.offset);
14009 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14010 rela.r_addend = ent->addend;
14011 loc = (htab->relplt->contents
14012 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
14013 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
14015 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14020 /* This symbol needs a copy reloc. Set it up. */
14022 if (h->dynindx == -1
14023 || (h->root.type != bfd_link_hash_defined
14024 && h->root.type != bfd_link_hash_defweak)
14025 || htab->relbss == NULL)
14028 rela.r_offset = (h->root.u.def.value
14029 + h->root.u.def.section->output_section->vma
14030 + h->root.u.def.section->output_offset);
14031 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14033 loc = htab->relbss->contents;
14034 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14035 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14041 /* Used to decide how to sort relocs in an optimal manner for the
14042 dynamic linker, before writing them out. */
14044 static enum elf_reloc_type_class
14045 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
14047 enum elf_ppc64_reloc_type r_type;
14049 r_type = ELF64_R_TYPE (rela->r_info);
14052 case R_PPC64_RELATIVE:
14053 return reloc_class_relative;
14054 case R_PPC64_JMP_SLOT:
14055 return reloc_class_plt;
14057 return reloc_class_copy;
14059 return reloc_class_normal;
14063 /* Finish up the dynamic sections. */
14066 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14067 struct bfd_link_info *info)
14069 struct ppc_link_hash_table *htab;
14073 htab = ppc_hash_table (info);
14077 dynobj = htab->elf.dynobj;
14078 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14080 if (htab->elf.dynamic_sections_created)
14082 Elf64_External_Dyn *dyncon, *dynconend;
14084 if (sdyn == NULL || htab->got == NULL)
14087 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14088 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14089 for (; dyncon < dynconend; dyncon++)
14091 Elf_Internal_Dyn dyn;
14094 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14101 case DT_PPC64_GLINK:
14103 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14104 /* We stupidly defined DT_PPC64_GLINK to be the start
14105 of glink rather than the first entry point, which is
14106 what ld.so needs, and now have a bigger stub to
14107 support automatic multiple TOCs. */
14108 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
14112 s = bfd_get_section_by_name (output_bfd, ".opd");
14115 dyn.d_un.d_ptr = s->vma;
14118 case DT_PPC64_OPDSZ:
14119 s = bfd_get_section_by_name (output_bfd, ".opd");
14122 dyn.d_un.d_val = s->size;
14127 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14132 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14136 dyn.d_un.d_val = htab->relplt->size;
14140 /* Don't count procedure linkage table relocs in the
14141 overall reloc count. */
14145 dyn.d_un.d_val -= s->size;
14149 /* We may not be using the standard ELF linker script.
14150 If .rela.plt is the first .rela section, we adjust
14151 DT_RELA to not include it. */
14155 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14157 dyn.d_un.d_ptr += s->size;
14161 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14165 if (htab->got != NULL && htab->got->size != 0)
14167 /* Fill in the first entry in the global offset table.
14168 We use it to hold the link-time TOCbase. */
14169 bfd_put_64 (output_bfd,
14170 elf_gp (output_bfd) + TOC_BASE_OFF,
14171 htab->got->contents);
14173 /* Set .got entry size. */
14174 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
14177 if (htab->plt != NULL && htab->plt->size != 0)
14179 /* Set .plt entry size. */
14180 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
14184 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14185 brlt ourselves if emitrelocations. */
14186 if (htab->brlt != NULL
14187 && htab->brlt->reloc_count != 0
14188 && !_bfd_elf_link_output_relocs (output_bfd,
14190 elf_section_data (htab->brlt)->rela.hdr,
14191 elf_section_data (htab->brlt)->relocs,
14195 if (htab->glink != NULL
14196 && htab->glink->reloc_count != 0
14197 && !_bfd_elf_link_output_relocs (output_bfd,
14199 elf_section_data (htab->glink)->rela.hdr,
14200 elf_section_data (htab->glink)->relocs,
14205 if (htab->glink_eh_frame != NULL
14206 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
14207 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14208 htab->glink_eh_frame,
14209 htab->glink_eh_frame->contents))
14212 /* We need to handle writing out multiple GOT sections ourselves,
14213 since we didn't add them to DYNOBJ. We know dynobj is the first
14215 while ((dynobj = dynobj->link_next) != NULL)
14219 if (!is_ppc64_elf (dynobj))
14222 s = ppc64_elf_tdata (dynobj)->got;
14225 && s->output_section != bfd_abs_section_ptr
14226 && !bfd_set_section_contents (output_bfd, s->output_section,
14227 s->contents, s->output_offset,
14230 s = ppc64_elf_tdata (dynobj)->relgot;
14233 && s->output_section != bfd_abs_section_ptr
14234 && !bfd_set_section_contents (output_bfd, s->output_section,
14235 s->contents, s->output_offset,
14243 #include "elf64-target.h"
14245 /* FreeBSD support */
14247 #undef TARGET_LITTLE_SYM
14248 #undef TARGET_LITTLE_NAME
14250 #undef TARGET_BIG_SYM
14251 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14252 #undef TARGET_BIG_NAME
14253 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14256 #define ELF_OSABI ELFOSABI_FREEBSD
14259 #define elf64_bed elf64_powerpc_fbsd_bed
14261 #include "elf64-target.h"