1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 static bfd_vma opd_entry_value
58 (asection *, bfd_vma, asection **, bfd_vma *);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_post_process_headers _bfd_elf_set_osabi
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE 24
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
131 /* TOC base pointers offset from start of TOC. */
132 #define TOC_BASE_OFF 0x8000
134 /* Offset of tp and dtp pointers from start of TLS block. */
135 #define TP_OFFSET 0x7000
136 #define DTP_OFFSET 0x8000
138 /* .plt call stub instructions. The normal stub is like this, but
139 sometimes the .plt entry crosses a 64k boundary and we need to
140 insert an addi to adjust r12. */
141 #define PLT_CALL_STUB_SIZE (7*4)
142 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
143 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
144 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
145 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
146 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
147 /* ld %r11,xxx+16@l(%r12) */
148 #define BCTR 0x4e800420 /* bctr */
151 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
152 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
153 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
154 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
156 #define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
157 #define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
158 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
159 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
160 #define BNECTR 0x4ca20420 /* bnectr+ */
161 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
163 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
164 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
166 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
168 /* glink call stub instructions. We enter with the index in R0. */
169 #define GLINK_CALL_STUB_SIZE (16*4)
173 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
174 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
176 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
177 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
178 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
187 #define NOP 0x60000000
189 /* Some other nops. */
190 #define CROR_151515 0x4def7b82
191 #define CROR_313131 0x4ffffb82
193 /* .glink entries for the first 32k functions are two instructions. */
194 #define LI_R0_0 0x38000000 /* li %r0,0 */
195 #define B_DOT 0x48000000 /* b . */
197 /* After that, we need two instructions to load the index, followed by
199 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
200 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
202 /* Instructions used by the save and restore reg functions. */
203 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
204 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
205 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
206 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
207 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
208 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
209 #define LI_R12_0 0x39800000 /* li %r12,0 */
210 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
211 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
212 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
213 #define BLR 0x4e800020 /* blr */
215 /* Since .opd is an array of descriptors and each entry will end up
216 with identical R_PPC64_RELATIVE relocs, there is really no need to
217 propagate .opd relocs; The dynamic linker should be taught to
218 relocate .opd without reloc entries. */
219 #ifndef NO_OPD_RELOCS
220 #define NO_OPD_RELOCS 0
223 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
225 /* Relocation HOWTO's. */
226 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
228 static reloc_howto_type ppc64_elf_howto_raw[] = {
229 /* This reloc does nothing. */
230 HOWTO (R_PPC64_NONE, /* type */
232 2, /* size (0 = byte, 1 = short, 2 = long) */
234 FALSE, /* pc_relative */
236 complain_overflow_dont, /* complain_on_overflow */
237 bfd_elf_generic_reloc, /* special_function */
238 "R_PPC64_NONE", /* name */
239 FALSE, /* partial_inplace */
242 FALSE), /* pcrel_offset */
244 /* A standard 32 bit relocation. */
245 HOWTO (R_PPC64_ADDR32, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_bitfield, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_PPC64_ADDR32", /* name */
254 FALSE, /* partial_inplace */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
259 /* An absolute 26 bit branch; the lower two bits must be zero.
260 FIXME: we don't check that, we just clear them. */
261 HOWTO (R_PPC64_ADDR24, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR24", /* name */
270 FALSE, /* partial_inplace */
272 0x03fffffc, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* A standard 16 bit relocation. */
276 HOWTO (R_PPC64_ADDR16, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_PPC64_ADDR16", /* name */
285 FALSE, /* partial_inplace */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* A 16 bit relocation without overflow. */
291 HOWTO (R_PPC64_ADDR16_LO, /* type */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE, /* pc_relative */
297 complain_overflow_dont,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_PPC64_ADDR16_LO", /* name */
300 FALSE, /* partial_inplace */
302 0xffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
305 /* Bits 16-31 of an address. */
306 HOWTO (R_PPC64_ADDR16_HI, /* type */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC64_ADDR16_HI", /* name */
315 FALSE, /* partial_inplace */
317 0xffff, /* dst_mask */
318 FALSE), /* pcrel_offset */
320 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
321 bits, treated as a signed number, is negative. */
322 HOWTO (R_PPC64_ADDR16_HA, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_dont, /* complain_on_overflow */
329 ppc64_elf_ha_reloc, /* special_function */
330 "R_PPC64_ADDR16_HA", /* name */
331 FALSE, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* An absolute 16 bit branch; the lower two bits must be zero.
337 FIXME: we don't check that, we just clear them. */
338 HOWTO (R_PPC64_ADDR14, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 ppc64_elf_branch_reloc, /* special_function */
346 "R_PPC64_ADDR14", /* name */
347 FALSE, /* partial_inplace */
349 0x0000fffc, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* An absolute 16 bit branch, for which bit 10 should be set to
353 indicate that the branch is expected to be taken. The lower two
354 bits must be zero. */
355 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 ppc64_elf_brtaken_reloc, /* special_function */
363 "R_PPC64_ADDR14_BRTAKEN",/* name */
364 FALSE, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is not expected to be taken. The lower
371 two bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE, /* pc_relative */
378 complain_overflow_bitfield, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc, /* special_function */
380 "R_PPC64_ADDR14_BRNTAKEN",/* name */
381 FALSE, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE), /* pcrel_offset */
386 /* A relative 26 bit branch; the lower two bits must be zero. */
387 HOWTO (R_PPC64_REL24, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 ppc64_elf_branch_reloc, /* special_function */
395 "R_PPC64_REL24", /* name */
396 FALSE, /* partial_inplace */
398 0x03fffffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
401 /* A relative 16 bit branch; the lower two bits must be zero. */
402 HOWTO (R_PPC64_REL14, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 TRUE, /* pc_relative */
408 complain_overflow_signed, /* complain_on_overflow */
409 ppc64_elf_branch_reloc, /* special_function */
410 "R_PPC64_REL14", /* name */
411 FALSE, /* partial_inplace */
413 0x0000fffc, /* dst_mask */
414 TRUE), /* pcrel_offset */
416 /* A relative 16 bit branch. Bit 10 should be set to indicate that
417 the branch is expected to be taken. The lower two bits must be
419 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 ppc64_elf_brtaken_reloc, /* special_function */
427 "R_PPC64_REL14_BRTAKEN", /* name */
428 FALSE, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is not expected to be taken. The lower two bits must
436 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_signed, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc, /* special_function */
444 "R_PPC64_REL14_BRNTAKEN",/* name */
445 FALSE, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
452 HOWTO (R_PPC64_GOT16, /* type */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE, /* pc_relative */
458 complain_overflow_signed, /* complain_on_overflow */
459 ppc64_elf_unhandled_reloc, /* special_function */
460 "R_PPC64_GOT16", /* name */
461 FALSE, /* partial_inplace */
463 0xffff, /* dst_mask */
464 FALSE), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
468 HOWTO (R_PPC64_GOT16_LO, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc, /* special_function */
476 "R_PPC64_GOT16_LO", /* name */
477 FALSE, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_HI, /* type */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_dont,/* complain_on_overflow */
491 ppc64_elf_unhandled_reloc, /* special_function */
492 "R_PPC64_GOT16_HI", /* name */
493 FALSE, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HA, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_dont,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc, /* special_function */
508 "R_PPC64_GOT16_HA", /* name */
509 FALSE, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* This is used only by the dynamic linker. The symbol should exist
515 both in the object being run and in some shared library. The
516 dynamic linker copies the data addressed by the symbol from the
517 shared library into the object, because the object being
518 run has to have the data at some particular address. */
519 HOWTO (R_PPC64_COPY, /* type */
521 0, /* this one is variable size */
523 FALSE, /* pc_relative */
525 complain_overflow_dont, /* complain_on_overflow */
526 ppc64_elf_unhandled_reloc, /* special_function */
527 "R_PPC64_COPY", /* name */
528 FALSE, /* partial_inplace */
531 FALSE), /* pcrel_offset */
533 /* Like R_PPC64_ADDR64, but used when setting global offset table
535 HOWTO (R_PPC64_GLOB_DAT, /* type */
537 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
539 FALSE, /* pc_relative */
541 complain_overflow_dont, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc, /* special_function */
543 "R_PPC64_GLOB_DAT", /* name */
544 FALSE, /* partial_inplace */
546 ONES (64), /* dst_mask */
547 FALSE), /* pcrel_offset */
549 /* Created by the link editor. Marks a procedure linkage table
550 entry for a symbol. */
551 HOWTO (R_PPC64_JMP_SLOT, /* type */
553 0, /* size (0 = byte, 1 = short, 2 = long) */
555 FALSE, /* pc_relative */
557 complain_overflow_dont, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc, /* special_function */
559 "R_PPC64_JMP_SLOT", /* name */
560 FALSE, /* partial_inplace */
563 FALSE), /* pcrel_offset */
565 /* Used only by the dynamic linker. When the object is run, this
566 doubleword64 is set to the load address of the object, plus the
568 HOWTO (R_PPC64_RELATIVE, /* type */
570 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_RELATIVE", /* name */
577 FALSE, /* partial_inplace */
579 ONES (64), /* dst_mask */
580 FALSE), /* pcrel_offset */
582 /* Like R_PPC64_ADDR32, but may be unaligned. */
583 HOWTO (R_PPC64_UADDR32, /* type */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
587 FALSE, /* pc_relative */
589 complain_overflow_bitfield, /* complain_on_overflow */
590 bfd_elf_generic_reloc, /* special_function */
591 "R_PPC64_UADDR32", /* name */
592 FALSE, /* partial_inplace */
594 0xffffffff, /* dst_mask */
595 FALSE), /* pcrel_offset */
597 /* Like R_PPC64_ADDR16, but may be unaligned. */
598 HOWTO (R_PPC64_UADDR16, /* type */
600 1, /* size (0 = byte, 1 = short, 2 = long) */
602 FALSE, /* pc_relative */
604 complain_overflow_bitfield, /* complain_on_overflow */
605 bfd_elf_generic_reloc, /* special_function */
606 "R_PPC64_UADDR16", /* name */
607 FALSE, /* partial_inplace */
609 0xffff, /* dst_mask */
610 FALSE), /* pcrel_offset */
612 /* 32-bit PC relative. */
613 HOWTO (R_PPC64_REL32, /* type */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
617 TRUE, /* pc_relative */
619 /* FIXME: Verify. Was complain_overflow_bitfield. */
620 complain_overflow_signed, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_REL32", /* name */
623 FALSE, /* partial_inplace */
625 0xffffffff, /* dst_mask */
626 TRUE), /* pcrel_offset */
628 /* 32-bit relocation to the symbol's procedure linkage table. */
629 HOWTO (R_PPC64_PLT32, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE, /* pc_relative */
635 complain_overflow_bitfield, /* complain_on_overflow */
636 ppc64_elf_unhandled_reloc, /* special_function */
637 "R_PPC64_PLT32", /* name */
638 FALSE, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
643 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
644 FIXME: R_PPC64_PLTREL32 not supported. */
645 HOWTO (R_PPC64_PLTREL32, /* type */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
649 TRUE, /* pc_relative */
651 complain_overflow_signed, /* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_PPC64_PLTREL32", /* name */
654 FALSE, /* partial_inplace */
656 0xffffffff, /* dst_mask */
657 TRUE), /* pcrel_offset */
659 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
661 HOWTO (R_PPC64_PLT16_LO, /* type */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE, /* pc_relative */
667 complain_overflow_dont, /* complain_on_overflow */
668 ppc64_elf_unhandled_reloc, /* special_function */
669 "R_PPC64_PLT16_LO", /* name */
670 FALSE, /* partial_inplace */
672 0xffff, /* dst_mask */
673 FALSE), /* pcrel_offset */
675 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
677 HOWTO (R_PPC64_PLT16_HI, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE, /* pc_relative */
683 complain_overflow_dont, /* complain_on_overflow */
684 ppc64_elf_unhandled_reloc, /* special_function */
685 "R_PPC64_PLT16_HI", /* name */
686 FALSE, /* partial_inplace */
688 0xffff, /* dst_mask */
689 FALSE), /* pcrel_offset */
691 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
693 HOWTO (R_PPC64_PLT16_HA, /* type */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
697 FALSE, /* pc_relative */
699 complain_overflow_dont, /* complain_on_overflow */
700 ppc64_elf_unhandled_reloc, /* special_function */
701 "R_PPC64_PLT16_HA", /* name */
702 FALSE, /* partial_inplace */
704 0xffff, /* dst_mask */
705 FALSE), /* pcrel_offset */
707 /* 16-bit section relative relocation. */
708 HOWTO (R_PPC64_SECTOFF, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE, /* pc_relative */
714 complain_overflow_bitfield, /* complain_on_overflow */
715 ppc64_elf_sectoff_reloc, /* special_function */
716 "R_PPC64_SECTOFF", /* name */
717 FALSE, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE), /* pcrel_offset */
722 /* Like R_PPC64_SECTOFF, but no overflow warning. */
723 HOWTO (R_PPC64_SECTOFF_LO, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_dont, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc, /* special_function */
731 "R_PPC64_SECTOFF_LO", /* name */
732 FALSE, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC64_SECTOFF_HI, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE, /* pc_relative */
744 complain_overflow_dont, /* complain_on_overflow */
745 ppc64_elf_sectoff_reloc, /* special_function */
746 "R_PPC64_SECTOFF_HI", /* name */
747 FALSE, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE), /* pcrel_offset */
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HA, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE, /* pc_relative */
759 complain_overflow_dont, /* complain_on_overflow */
760 ppc64_elf_sectoff_ha_reloc, /* special_function */
761 "R_PPC64_SECTOFF_HA", /* name */
762 FALSE, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE), /* pcrel_offset */
767 /* Like R_PPC64_REL24 without touching the two least significant bits. */
768 HOWTO (R_PPC64_REL30, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 TRUE, /* pc_relative */
774 complain_overflow_dont, /* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
776 "R_PPC64_REL30", /* name */
777 FALSE, /* partial_inplace */
779 0xfffffffc, /* dst_mask */
780 TRUE), /* pcrel_offset */
782 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
784 /* A standard 64-bit relocation. */
785 HOWTO (R_PPC64_ADDR64, /* type */
787 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 FALSE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC64_ADDR64", /* name */
794 FALSE, /* partial_inplace */
796 ONES (64), /* dst_mask */
797 FALSE), /* pcrel_offset */
799 /* The bits 32-47 of an address. */
800 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE, /* pc_relative */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_PPC64_ADDR16_HIGHER", /* name */
809 FALSE, /* partial_inplace */
811 0xffff, /* dst_mask */
812 FALSE), /* pcrel_offset */
814 /* The bits 32-47 of an address, plus 1 if the contents of the low
815 16 bits, treated as a signed number, is negative. */
816 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 FALSE, /* pc_relative */
822 complain_overflow_dont, /* complain_on_overflow */
823 ppc64_elf_ha_reloc, /* special_function */
824 "R_PPC64_ADDR16_HIGHERA", /* name */
825 FALSE, /* partial_inplace */
827 0xffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
830 /* The bits 48-63 of an address. */
831 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC64_ADDR16_HIGHEST", /* name */
840 FALSE, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* The bits 48-63 of an address, plus 1 if the contents of the low
846 16 bits, treated as a signed number, is negative. */
847 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE, /* pc_relative */
853 complain_overflow_dont, /* complain_on_overflow */
854 ppc64_elf_ha_reloc, /* special_function */
855 "R_PPC64_ADDR16_HIGHESTA", /* name */
856 FALSE, /* partial_inplace */
858 0xffff, /* dst_mask */
859 FALSE), /* pcrel_offset */
861 /* Like ADDR64, but may be unaligned. */
862 HOWTO (R_PPC64_UADDR64, /* type */
864 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
866 FALSE, /* pc_relative */
868 complain_overflow_dont, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
870 "R_PPC64_UADDR64", /* name */
871 FALSE, /* partial_inplace */
873 ONES (64), /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* 64-bit relative relocation. */
877 HOWTO (R_PPC64_REL64, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 TRUE, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_REL64", /* name */
886 FALSE, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 TRUE), /* pcrel_offset */
891 /* 64-bit relocation to the symbol's procedure linkage table. */
892 HOWTO (R_PPC64_PLT64, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 FALSE, /* pc_relative */
898 complain_overflow_dont, /* complain_on_overflow */
899 ppc64_elf_unhandled_reloc, /* special_function */
900 "R_PPC64_PLT64", /* name */
901 FALSE, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 FALSE), /* pcrel_offset */
906 /* 64-bit PC relative relocation to the symbol's procedure linkage
908 /* FIXME: R_PPC64_PLTREL64 not supported. */
909 HOWTO (R_PPC64_PLTREL64, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 TRUE, /* pc_relative */
915 complain_overflow_dont, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc, /* special_function */
917 "R_PPC64_PLTREL64", /* name */
918 FALSE, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 TRUE), /* pcrel_offset */
923 /* 16 bit TOC-relative relocation. */
925 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
926 HOWTO (R_PPC64_TOC16, /* type */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc64_elf_toc_reloc, /* special_function */
934 "R_PPC64_TOC16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation without overflow. */
942 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
943 HOWTO (R_PPC64_TOC16_LO, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_dont, /* complain_on_overflow */
950 ppc64_elf_toc_reloc, /* special_function */
951 "R_PPC64_TOC16_LO", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation, high 16 bits. */
959 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_HI, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE, /* pc_relative */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_toc_reloc, /* special_function */
968 "R_PPC64_TOC16_HI", /* name */
969 FALSE, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
975 contents of the low 16 bits, treated as a signed number, is
978 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
979 HOWTO (R_PPC64_TOC16_HA, /* type */
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_dont, /* complain_on_overflow */
986 ppc64_elf_toc_ha_reloc, /* special_function */
987 "R_PPC64_TOC16_HA", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* 64-bit relocation; insert value of TOC base (.TOC.). */
995 /* R_PPC64_TOC 51 doubleword64 .TOC. */
996 HOWTO (R_PPC64_TOC, /* type */
998 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_bitfield, /* complain_on_overflow */
1003 ppc64_elf_toc64_reloc, /* special_function */
1004 "R_PPC64_TOC", /* name */
1005 FALSE, /* partial_inplace */
1007 ONES (64), /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like R_PPC64_GOT16, but also informs the link editor that the
1011 value to relocate may (!) refer to a PLT entry which the link
1012 editor (a) may replace with the symbol value. If the link editor
1013 is unable to fully resolve the symbol, it may (b) create a PLT
1014 entry and store the address to the new PLT entry in the GOT.
1015 This permits lazy resolution of function symbols at run time.
1016 The link editor may also skip all of this and just (c) emit a
1017 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1018 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1019 HOWTO (R_PPC64_PLTGOT16, /* type */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE, /* pc_relative */
1025 complain_overflow_signed, /* complain_on_overflow */
1026 ppc64_elf_unhandled_reloc, /* special_function */
1027 "R_PPC64_PLTGOT16", /* name */
1028 FALSE, /* partial_inplace */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1033 /* Like R_PPC64_PLTGOT16, but without overflow. */
1034 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1035 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc64_elf_unhandled_reloc, /* special_function */
1043 "R_PPC64_PLTGOT16_LO", /* name */
1044 FALSE, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1050 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 FALSE, /* pc_relative */
1057 complain_overflow_dont, /* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HI", /* name */
1060 FALSE, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1065 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1066 1 if the contents of the low 16 bits, treated as a signed number,
1068 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE, /* pc_relative */
1075 complain_overflow_dont,/* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_HA", /* name */
1078 FALSE, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1083 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1084 HOWTO (R_PPC64_ADDR16_DS, /* type */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE, /* pc_relative */
1090 complain_overflow_bitfield, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
1092 "R_PPC64_ADDR16_DS", /* name */
1093 FALSE, /* partial_inplace */
1095 0xfffc, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE, /* pc_relative */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_PPC64_ADDR16_LO_DS",/* name */
1108 FALSE, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1113 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_GOT16_DS, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE, /* pc_relative */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc, /* special_function */
1122 "R_PPC64_GOT16_DS", /* name */
1123 FALSE, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE, /* pc_relative */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_GOT16_LO_DS", /* name */
1138 FALSE, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1143 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE, /* pc_relative */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc, /* special_function */
1152 "R_PPC64_PLT16_LO_DS", /* name */
1153 FALSE, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1158 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE, /* pc_relative */
1165 complain_overflow_bitfield, /* complain_on_overflow */
1166 ppc64_elf_sectoff_reloc, /* special_function */
1167 "R_PPC64_SECTOFF_DS", /* name */
1168 FALSE, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE, /* pc_relative */
1180 complain_overflow_dont, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc, /* special_function */
1182 "R_PPC64_SECTOFF_LO_DS",/* name */
1183 FALSE, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1188 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_TOC16_DS, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE, /* pc_relative */
1195 complain_overflow_signed, /* complain_on_overflow */
1196 ppc64_elf_toc_reloc, /* special_function */
1197 "R_PPC64_TOC16_DS", /* name */
1198 FALSE, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE, /* pc_relative */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc, /* special_function */
1212 "R_PPC64_TOC16_LO_DS", /* name */
1213 FALSE, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1218 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1219 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1220 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_signed, /* complain_on_overflow */
1227 ppc64_elf_unhandled_reloc, /* special_function */
1228 "R_PPC64_PLTGOT16_DS", /* name */
1229 FALSE, /* partial_inplace */
1231 0xfffc, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1235 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1236 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE, /* pc_relative */
1242 complain_overflow_dont, /* complain_on_overflow */
1243 ppc64_elf_unhandled_reloc, /* special_function */
1244 "R_PPC64_PLTGOT16_LO_DS",/* name */
1245 FALSE, /* partial_inplace */
1247 0xfffc, /* dst_mask */
1248 FALSE), /* pcrel_offset */
1250 /* Marker relocs for TLS. */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE, /* pc_relative */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_PPC64_TLS", /* name */
1260 FALSE, /* partial_inplace */
1263 FALSE), /* pcrel_offset */
1265 HOWTO (R_PPC64_TLSGD,
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont, /* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC64_TLSGD", /* name */
1274 FALSE, /* partial_inplace */
1277 FALSE), /* pcrel_offset */
1279 HOWTO (R_PPC64_TLSLD,
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLSLD", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TOCSAVE,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TOCSAVE", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 /* Computes the load module index of the load module that contains the
1308 definition of its TLS sym. */
1309 HOWTO (R_PPC64_DTPMOD64,
1311 4, /* size (0 = byte, 1 = short, 2 = long) */
1313 FALSE, /* pc_relative */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc, /* special_function */
1317 "R_PPC64_DTPMOD64", /* name */
1318 FALSE, /* partial_inplace */
1320 ONES (64), /* dst_mask */
1321 FALSE), /* pcrel_offset */
1323 /* Computes a dtv-relative displacement, the difference between the value
1324 of sym+add and the base address of the thread-local storage block that
1325 contains the definition of sym, minus 0x8000. */
1326 HOWTO (R_PPC64_DTPREL64,
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL64", /* name */
1335 FALSE, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 /* A 16 bit dtprel reloc. */
1341 HOWTO (R_PPC64_DTPREL16,
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_signed, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16", /* name */
1350 FALSE, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1355 /* Like DTPREL16, but no overflow. */
1356 HOWTO (R_PPC64_DTPREL16_LO,
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_LO", /* name */
1365 FALSE, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1370 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HI,
1372 16, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE, /* pc_relative */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HI", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HA,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HA", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HIGHER,
1402 32, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_dont, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HIGHER", /* name */
1410 FALSE, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1417 32, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE, /* pc_relative */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_HIGHERA", /* name */
1425 FALSE, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1432 48, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHEST", /* name */
1440 FALSE, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1460 /* Like DTPREL16, but for insns with a DS field. */
1461 HOWTO (R_PPC64_DTPREL16_DS,
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_DS", /* name */
1470 FALSE, /* partial_inplace */
1472 0xfffc, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1475 /* Like DTPREL16_DS, but no overflow. */
1476 HOWTO (R_PPC64_DTPREL16_LO_DS,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_LO_DS", /* name */
1485 FALSE, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1490 /* Computes a tp-relative displacement, the difference between the value of
1491 sym+add and the value of the thread pointer (r13). */
1492 HOWTO (R_PPC64_TPREL64,
1494 4, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL64", /* name */
1501 FALSE, /* partial_inplace */
1503 ONES (64), /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* A 16 bit tprel reloc. */
1507 HOWTO (R_PPC64_TPREL16,
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_signed, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16", /* name */
1516 FALSE, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Like TPREL16, but no overflow. */
1522 HOWTO (R_PPC64_TPREL16_LO,
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_LO", /* name */
1531 FALSE, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* Like TPREL16_LO, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HI,
1538 16, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE, /* pc_relative */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HI", /* name */
1546 FALSE, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1551 /* Like TPREL16_HI, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HA,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE, /* pc_relative */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HA", /* name */
1561 FALSE, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1566 /* Like TPREL16_HI, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HIGHER,
1568 32, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE, /* pc_relative */
1573 complain_overflow_dont, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HIGHER", /* name */
1576 FALSE, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1581 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHERA,
1583 32, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE, /* pc_relative */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_HIGHERA", /* name */
1591 FALSE, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHEST,
1598 48, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE, /* pc_relative */
1603 complain_overflow_dont, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_TPREL16_HIGHEST", /* name */
1606 FALSE, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1611 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE, /* pc_relative */
1618 complain_overflow_dont, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc, /* special_function */
1620 "R_PPC64_TPREL16_HIGHESTA", /* name */
1621 FALSE, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1626 /* Like TPREL16, but for insns with a DS field. */
1627 HOWTO (R_PPC64_TPREL16_DS,
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE, /* pc_relative */
1633 complain_overflow_signed, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_DS", /* name */
1636 FALSE, /* partial_inplace */
1638 0xfffc, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1641 /* Like TPREL16_DS, but no overflow. */
1642 HOWTO (R_PPC64_TPREL16_LO_DS,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE, /* pc_relative */
1648 complain_overflow_dont, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_LO_DS", /* name */
1651 FALSE, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1658 to the first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSGD16,
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_signed, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_GOT_TLSGD16", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* Like GOT_TLSGD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_GOT_TLSGD16_LO", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1690 16, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE, /* pc_relative */
1695 complain_overflow_dont, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc, /* special_function */
1697 "R_PPC64_GOT_TLSGD16_HI", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HA", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1718 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1719 with values (sym+add)@dtpmod and zero, and computes the offset to the
1720 first entry relative to the TOC base (r2). */
1721 HOWTO (R_PPC64_GOT_TLSLD16,
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE, /* pc_relative */
1727 complain_overflow_signed, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc, /* special_function */
1729 "R_PPC64_GOT_TLSLD16", /* name */
1730 FALSE, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE), /* pcrel_offset */
1735 /* Like GOT_TLSLD16, but no overflow. */
1736 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE, /* pc_relative */
1742 complain_overflow_dont, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSLD16_LO", /* name */
1745 FALSE, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1750 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1752 16, /* rightshift */
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE, /* pc_relative */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc, /* special_function */
1759 "R_PPC64_GOT_TLSLD16_HI", /* name */
1760 FALSE, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE, /* pc_relative */
1772 complain_overflow_dont, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HA", /* name */
1775 FALSE, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1781 the offset to the entry relative to the TOC base (r2). */
1782 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 FALSE, /* pc_relative */
1788 complain_overflow_signed, /* complain_on_overflow */
1789 ppc64_elf_unhandled_reloc, /* special_function */
1790 "R_PPC64_GOT_DTPREL16_DS", /* name */
1791 FALSE, /* partial_inplace */
1793 0xfffc, /* dst_mask */
1794 FALSE), /* pcrel_offset */
1796 /* Like GOT_DTPREL16_DS, but no overflow. */
1797 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE, /* pc_relative */
1803 complain_overflow_dont, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1806 FALSE, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1813 16, /* rightshift */
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE, /* pc_relative */
1818 complain_overflow_dont, /* complain_on_overflow */
1819 ppc64_elf_unhandled_reloc, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_HI", /* name */
1821 FALSE, /* partial_inplace */
1823 0xffff, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE, /* pc_relative */
1833 complain_overflow_dont, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HA", /* name */
1836 FALSE, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE), /* pcrel_offset */
1841 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1842 offset to the entry relative to the TOC base (r2). */
1843 HOWTO (R_PPC64_GOT_TPREL16_DS,
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_signed, /* complain_on_overflow */
1850 ppc64_elf_unhandled_reloc, /* special_function */
1851 "R_PPC64_GOT_TPREL16_DS", /* name */
1852 FALSE, /* partial_inplace */
1854 0xfffc, /* dst_mask */
1855 FALSE), /* pcrel_offset */
1857 /* Like GOT_TPREL16_DS, but no overflow. */
1858 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE, /* pc_relative */
1864 complain_overflow_dont, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc, /* special_function */
1866 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1867 FALSE, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE), /* pcrel_offset */
1872 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1873 HOWTO (R_PPC64_GOT_TPREL16_HI,
1874 16, /* rightshift */
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1877 FALSE, /* pc_relative */
1879 complain_overflow_dont, /* complain_on_overflow */
1880 ppc64_elf_unhandled_reloc, /* special_function */
1881 "R_PPC64_GOT_TPREL16_HI", /* name */
1882 FALSE, /* partial_inplace */
1884 0xffff, /* dst_mask */
1885 FALSE), /* pcrel_offset */
1887 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HA,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE, /* pc_relative */
1894 complain_overflow_dont, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HA", /* name */
1897 FALSE, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE), /* pcrel_offset */
1902 HOWTO (R_PPC64_JMP_IREL, /* type */
1904 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1906 FALSE, /* pc_relative */
1908 complain_overflow_dont, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc, /* special_function */
1910 "R_PPC64_JMP_IREL", /* name */
1911 FALSE, /* partial_inplace */
1914 FALSE), /* pcrel_offset */
1916 HOWTO (R_PPC64_IRELATIVE, /* type */
1918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_dont, /* complain_on_overflow */
1923 bfd_elf_generic_reloc, /* special_function */
1924 "R_PPC64_IRELATIVE", /* name */
1925 FALSE, /* partial_inplace */
1927 ONES (64), /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* A 16 bit relative relocation. */
1931 HOWTO (R_PPC64_REL16, /* type */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 TRUE, /* pc_relative */
1937 complain_overflow_bitfield, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 "R_PPC64_REL16", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 TRUE), /* pcrel_offset */
1945 /* A 16 bit relative relocation without overflow. */
1946 HOWTO (R_PPC64_REL16_LO, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE, /* pc_relative */
1952 complain_overflow_dont,/* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_REL16_LO", /* name */
1955 FALSE, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE), /* pcrel_offset */
1960 /* The high order 16 bits of a relative address. */
1961 HOWTO (R_PPC64_REL16_HI, /* type */
1962 16, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1965 TRUE, /* pc_relative */
1967 complain_overflow_dont, /* complain_on_overflow */
1968 bfd_elf_generic_reloc, /* special_function */
1969 "R_PPC64_REL16_HI", /* name */
1970 FALSE, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address, plus 1 if the contents of
1976 the low 16 bits, treated as a signed number, is negative. */
1977 HOWTO (R_PPC64_REL16_HA, /* type */
1978 16, /* rightshift */
1979 1, /* size (0 = byte, 1 = short, 2 = long) */
1981 TRUE, /* pc_relative */
1983 complain_overflow_dont, /* complain_on_overflow */
1984 ppc64_elf_ha_reloc, /* special_function */
1985 "R_PPC64_REL16_HA", /* name */
1986 FALSE, /* partial_inplace */
1988 0xffff, /* dst_mask */
1989 TRUE), /* pcrel_offset */
1991 /* GNU extension to record C++ vtable hierarchy. */
1992 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1994 0, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE, /* pc_relative */
1998 complain_overflow_dont, /* complain_on_overflow */
1999 NULL, /* special_function */
2000 "R_PPC64_GNU_VTINHERIT", /* name */
2001 FALSE, /* partial_inplace */
2004 FALSE), /* pcrel_offset */
2006 /* GNU extension to record C++ vtable member usage. */
2007 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2009 0, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 NULL, /* special_function */
2015 "R_PPC64_GNU_VTENTRY", /* name */
2016 FALSE, /* partial_inplace */
2019 FALSE), /* pcrel_offset */
2023 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2027 ppc_howto_init (void)
2029 unsigned int i, type;
2032 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2035 type = ppc64_elf_howto_raw[i].type;
2036 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2037 / sizeof (ppc64_elf_howto_table[0])));
2038 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2042 static reloc_howto_type *
2043 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2044 bfd_reloc_code_real_type code)
2046 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2048 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2049 /* Initialize howto table if needed. */
2057 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2059 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2061 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2063 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2065 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2067 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2069 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2071 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2073 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2075 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2077 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2079 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2081 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2083 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2085 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2087 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2089 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2091 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2093 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2095 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2097 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2099 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2101 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2103 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2105 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2107 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2109 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2111 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2113 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2115 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2117 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2119 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2121 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2123 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2125 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2127 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2129 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2131 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2133 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2135 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2137 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2139 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2141 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2143 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2145 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2147 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2149 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2151 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2153 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2155 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2157 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2159 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2161 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2163 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2165 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2167 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2169 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2171 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2173 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2175 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2177 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2179 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2181 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2183 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2185 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2187 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2189 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2191 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2193 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2195 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2197 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2199 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2201 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2203 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2205 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2207 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2209 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2211 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2213 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2215 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2217 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2219 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2221 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2223 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2225 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2227 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2229 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2231 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2233 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2235 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2237 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2239 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2241 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2243 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2245 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2247 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2249 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2251 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2253 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2255 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2257 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2259 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2261 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2263 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2265 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2267 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2269 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2273 return ppc64_elf_howto_table[r];
2276 static reloc_howto_type *
2277 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2283 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2285 if (ppc64_elf_howto_raw[i].name != NULL
2286 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2287 return &ppc64_elf_howto_raw[i];
2292 /* Set the howto pointer for a PowerPC ELF reloc. */
2295 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2296 Elf_Internal_Rela *dst)
2300 /* Initialize howto table if needed. */
2301 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2304 type = ELF64_R_TYPE (dst->r_info);
2305 if (type >= (sizeof (ppc64_elf_howto_table)
2306 / sizeof (ppc64_elf_howto_table[0])))
2308 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2310 type = R_PPC64_NONE;
2312 cache_ptr->howto = ppc64_elf_howto_table[type];
2315 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2317 static bfd_reloc_status_type
2318 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2319 void *data, asection *input_section,
2320 bfd *output_bfd, char **error_message)
2322 /* If this is a relocatable link (output_bfd test tells us), just
2323 call the generic function. Any adjustment will be done at final
2325 if (output_bfd != NULL)
2326 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2327 input_section, output_bfd, error_message);
2329 /* Adjust the addend for sign extension of the low 16 bits.
2330 We won't actually be using the low 16 bits, so trashing them
2332 reloc_entry->addend += 0x8000;
2333 return bfd_reloc_continue;
2336 static bfd_reloc_status_type
2337 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2341 if (output_bfd != NULL)
2342 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2343 input_section, output_bfd, error_message);
2345 if (strcmp (symbol->section->name, ".opd") == 0
2346 && (symbol->section->owner->flags & DYNAMIC) == 0)
2348 bfd_vma dest = opd_entry_value (symbol->section,
2349 symbol->value + reloc_entry->addend,
2351 if (dest != (bfd_vma) -1)
2352 reloc_entry->addend = dest - (symbol->value
2353 + symbol->section->output_section->vma
2354 + symbol->section->output_offset);
2356 return bfd_reloc_continue;
2359 static bfd_reloc_status_type
2360 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2361 void *data, asection *input_section,
2362 bfd *output_bfd, char **error_message)
2365 enum elf_ppc64_reloc_type r_type;
2366 bfd_size_type octets;
2367 /* Assume 'at' branch hints. */
2368 bfd_boolean is_isa_v2 = TRUE;
2370 /* If this is a relocatable link (output_bfd test tells us), just
2371 call the generic function. Any adjustment will be done at final
2373 if (output_bfd != NULL)
2374 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2375 input_section, output_bfd, error_message);
2377 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2378 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2379 insn &= ~(0x01 << 21);
2380 r_type = reloc_entry->howto->type;
2381 if (r_type == R_PPC64_ADDR14_BRTAKEN
2382 || r_type == R_PPC64_REL14_BRTAKEN)
2383 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2387 /* Set 'a' bit. This is 0b00010 in BO field for branch
2388 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2389 for branch on CTR insns (BO == 1a00t or 1a01t). */
2390 if ((insn & (0x14 << 21)) == (0x04 << 21))
2392 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2402 if (!bfd_is_com_section (symbol->section))
2403 target = symbol->value;
2404 target += symbol->section->output_section->vma;
2405 target += symbol->section->output_offset;
2406 target += reloc_entry->addend;
2408 from = (reloc_entry->address
2409 + input_section->output_offset
2410 + input_section->output_section->vma);
2412 /* Invert 'y' bit if not the default. */
2413 if ((bfd_signed_vma) (target - from) < 0)
2416 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2418 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2419 input_section, output_bfd, error_message);
2422 static bfd_reloc_status_type
2423 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2424 void *data, asection *input_section,
2425 bfd *output_bfd, char **error_message)
2427 /* If this is a relocatable link (output_bfd test tells us), just
2428 call the generic function. Any adjustment will be done at final
2430 if (output_bfd != NULL)
2431 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2432 input_section, output_bfd, error_message);
2434 /* Subtract the symbol section base address. */
2435 reloc_entry->addend -= symbol->section->output_section->vma;
2436 return bfd_reloc_continue;
2439 static bfd_reloc_status_type
2440 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2441 void *data, asection *input_section,
2442 bfd *output_bfd, char **error_message)
2444 /* If this is a relocatable link (output_bfd test tells us), just
2445 call the generic function. Any adjustment will be done at final
2447 if (output_bfd != NULL)
2448 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2449 input_section, output_bfd, error_message);
2451 /* Subtract the symbol section base address. */
2452 reloc_entry->addend -= symbol->section->output_section->vma;
2454 /* Adjust the addend for sign extension of the low 16 bits. */
2455 reloc_entry->addend += 0x8000;
2456 return bfd_reloc_continue;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd != NULL)
2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2471 input_section, output_bfd, error_message);
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2475 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2479 return bfd_reloc_continue;
2482 static bfd_reloc_status_type
2483 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2484 void *data, asection *input_section,
2485 bfd *output_bfd, char **error_message)
2489 /* If this is a relocatable link (output_bfd test tells us), just
2490 call the generic function. Any adjustment will be done at final
2492 if (output_bfd != NULL)
2493 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2494 input_section, output_bfd, error_message);
2496 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2498 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2500 /* Subtract the TOC base address. */
2501 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2503 /* Adjust the addend for sign extension of the low 16 bits. */
2504 reloc_entry->addend += 0x8000;
2505 return bfd_reloc_continue;
2508 static bfd_reloc_status_type
2509 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2510 void *data, asection *input_section,
2511 bfd *output_bfd, char **error_message)
2514 bfd_size_type octets;
2516 /* If this is a relocatable link (output_bfd test tells us), just
2517 call the generic function. Any adjustment will be done at final
2519 if (output_bfd != NULL)
2520 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2521 input_section, output_bfd, error_message);
2523 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2525 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2527 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2528 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2529 return bfd_reloc_ok;
2532 static bfd_reloc_status_type
2533 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2534 void *data, asection *input_section,
2535 bfd *output_bfd, char **error_message)
2537 /* If this is a relocatable link (output_bfd test tells us), just
2538 call the generic function. Any adjustment will be done at final
2540 if (output_bfd != NULL)
2541 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2542 input_section, output_bfd, error_message);
2544 if (error_message != NULL)
2546 static char buf[60];
2547 sprintf (buf, "generic linker can't handle %s",
2548 reloc_entry->howto->name);
2549 *error_message = buf;
2551 return bfd_reloc_dangerous;
2554 /* Track GOT entries needed for a given symbol. We might need more
2555 than one got entry per symbol. */
2558 struct got_entry *next;
2560 /* The symbol addend that we'll be placing in the GOT. */
2563 /* Unlike other ELF targets, we use separate GOT entries for the same
2564 symbol referenced from different input files. This is to support
2565 automatic multiple TOC/GOT sections, where the TOC base can vary
2566 from one input file to another. After partitioning into TOC groups
2567 we merge entries within the group.
2569 Point to the BFD owning this GOT entry. */
2572 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2573 TLS_TPREL or TLS_DTPREL for tls entries. */
2574 unsigned char tls_type;
2576 /* Non-zero if got.ent points to real entry. */
2577 unsigned char is_indirect;
2579 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2582 bfd_signed_vma refcount;
2584 struct got_entry *ent;
2588 /* The same for PLT. */
2591 struct plt_entry *next;
2597 bfd_signed_vma refcount;
2602 struct ppc64_elf_obj_tdata
2604 struct elf_obj_tdata elf;
2606 /* Shortcuts to dynamic linker sections. */
2610 /* Used during garbage collection. We attach global symbols defined
2611 on removed .opd entries to this section so that the sym is removed. */
2612 asection *deleted_section;
2614 /* TLS local dynamic got entry handling. Support for multiple GOT
2615 sections means we potentially need one of these for each input bfd. */
2616 struct got_entry tlsld_got;
2618 /* A copy of relocs before they are modified for --emit-relocs. */
2619 Elf_Internal_Rela *opd_relocs;
2621 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2622 the reloc to be in the range -32768 to 32767. */
2623 unsigned int has_small_toc_reloc : 1;
2625 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2626 instruction not one we handle. */
2627 unsigned int unexpected_toc_insn : 1;
2630 #define ppc64_elf_tdata(bfd) \
2631 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2633 #define ppc64_tlsld_got(bfd) \
2634 (&ppc64_elf_tdata (bfd)->tlsld_got)
2636 #define is_ppc64_elf(bfd) \
2637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2638 && elf_object_id (bfd) == PPC64_ELF_DATA)
2640 /* Override the generic function because we store some extras. */
2643 ppc64_elf_mkobject (bfd *abfd)
2645 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2649 /* Fix bad default arch selected for a 64 bit input bfd when the
2650 default is 32 bit. */
2653 ppc64_elf_object_p (bfd *abfd)
2655 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2657 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2659 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2661 /* Relies on arch after 32 bit default being 64 bit default. */
2662 abfd->arch_info = abfd->arch_info->next;
2663 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2669 /* Support for core dump NOTE sections. */
2672 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2674 size_t offset, size;
2676 if (note->descsz != 504)
2680 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2683 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
2689 /* Make a ".reg/999" section. */
2690 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2691 size, note->descpos + offset);
2695 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2697 if (note->descsz != 136)
2700 elf_tdata (abfd)->core_pid
2701 = bfd_get_32 (abfd, note->descdata + 24);
2702 elf_tdata (abfd)->core_program
2703 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2704 elf_tdata (abfd)->core_command
2705 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2711 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2724 va_start (ap, note_type);
2725 memset (data, 0, sizeof (data));
2726 strncpy (data + 40, va_arg (ap, const char *), 16);
2727 strncpy (data + 56, va_arg (ap, const char *), 80);
2729 return elfcore_write_note (abfd, buf, bufsiz,
2730 "CORE", note_type, data, sizeof (data));
2741 va_start (ap, note_type);
2742 memset (data, 0, 112);
2743 pid = va_arg (ap, long);
2744 bfd_put_32 (abfd, pid, data + 32);
2745 cursig = va_arg (ap, int);
2746 bfd_put_16 (abfd, cursig, data + 12);
2747 greg = va_arg (ap, const void *);
2748 memcpy (data + 112, greg, 384);
2749 memset (data + 496, 0, 8);
2751 return elfcore_write_note (abfd, buf, bufsiz,
2752 "CORE", note_type, data, sizeof (data));
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2767 { NULL, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type {
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection **func_sec;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2816 if (!sec->used_by_bfd)
2818 struct _ppc64_elf_section_data *sdata;
2819 bfd_size_type amt = sizeof (*sdata);
2821 sdata = bfd_zalloc (abfd, amt);
2824 sec->used_by_bfd = sdata;
2827 return _bfd_elf_new_section_hook (abfd, sec);
2830 static struct _opd_sec_data *
2831 get_opd_info (asection * sec)
2834 && ppc64_elf_section_data (sec) != NULL
2835 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2836 return &ppc64_elf_section_data (sec)->u.opd;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap, const void *bp)
2848 const asymbol *a = * (const asymbol **) ap;
2849 const asymbol *b = * (const asymbol **) bp;
2851 /* Section symbols first. */
2852 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2854 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2857 /* then .opd symbols. */
2858 if (strcmp (a->section->name, ".opd") == 0
2859 && strcmp (b->section->name, ".opd") != 0)
2861 if (strcmp (a->section->name, ".opd") != 0
2862 && strcmp (b->section->name, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 == (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2872 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 != (SEC_CODE | SEC_ALLOC)
2874 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 == (SEC_CODE | SEC_ALLOC))
2878 if (synthetic_relocatable)
2880 if (a->section->id < b->section->id)
2883 if (a->section->id > b->section->id)
2887 if (a->value + a->section->vma < b->value + b->section->vma)
2890 if (a->value + a->section->vma > b->value + b->section->vma)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2898 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2901 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2904 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2907 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2910 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2913 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2916 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2933 mid = (lo + hi) >> 1;
2934 if (syms[mid]->value + syms[mid]->section->vma < value)
2936 else if (syms[mid]->value + syms[mid]->section->vma > value)
2946 mid = (lo + hi) >> 1;
2947 if (syms[mid]->section->id < id)
2949 else if (syms[mid]->section->id > id)
2951 else if (syms[mid]->value < value)
2953 else if (syms[mid]->value > value)
2963 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2965 bfd_vma vma = *(bfd_vma *) ptr;
2966 return ((section->flags & SEC_ALLOC) != 0
2967 && section->vma <= vma
2968 && vma < section->vma + section->size);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2976 long static_count, asymbol **static_syms,
2977 long dyn_count, asymbol **dyn_syms,
2984 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2986 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2991 opd = bfd_get_section_by_name (abfd, ".opd");
2995 symcount = static_count;
2997 symcount += dyn_count;
3001 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3005 if (!relocatable && static_count != 0 && dyn_count != 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms, static_syms, static_count * sizeof (*syms));
3009 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3011 else if (!relocatable && static_count == 0)
3012 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3014 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3016 synthetic_relocatable = relocatable;
3017 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3019 if (!relocatable && symcount > 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i = 1, j = 1; i < symcount; ++i)
3026 if (syms[i - 1]->value + syms[i - 1]->section->vma
3027 != syms[i]->value + syms[i]->section->vma)
3028 syms[j++] = syms[i];
3033 if (strcmp (syms[i]->section->name, ".opd") == 0)
3037 for (; i < symcount; ++i)
3038 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3039 != (SEC_CODE | SEC_ALLOC))
3040 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3044 for (; i < symcount; ++i)
3045 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3049 for (; i < symcount; ++i)
3050 if (strcmp (syms[i]->section->name, ".opd") != 0)
3054 for (; i < symcount; ++i)
3055 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3056 != (SEC_CODE | SEC_ALLOC))
3064 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3069 if (opdsymend == secsymend)
3072 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3073 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3077 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3084 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3088 while (r < opd->relocation + relcount
3089 && r->address < syms[i]->value + opd->vma)
3092 if (r == opd->relocation + relcount)
3095 if (r->address != syms[i]->value + opd->vma)
3098 if (r->howto->type != R_PPC64_ADDR64)
3101 sym = *r->sym_ptr_ptr;
3102 if (!sym_exists_at (syms, opdsymend, symcount,
3103 sym->section->id, sym->value + r->addend))
3106 size += sizeof (asymbol);
3107 size += strlen (syms[i]->name) + 2;
3111 s = *ret = bfd_malloc (size);
3118 names = (char *) (s + count);
3120 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3124 while (r < opd->relocation + relcount
3125 && r->address < syms[i]->value + opd->vma)
3128 if (r == opd->relocation + relcount)
3131 if (r->address != syms[i]->value + opd->vma)
3134 if (r->howto->type != R_PPC64_ADDR64)
3137 sym = *r->sym_ptr_ptr;
3138 if (!sym_exists_at (syms, opdsymend, symcount,
3139 sym->section->id, sym->value + r->addend))
3144 s->flags |= BSF_SYNTHETIC;
3145 s->section = sym->section;
3146 s->value = sym->value + r->addend;
3149 len = strlen (syms[i]->name);
3150 memcpy (names, syms[i]->name, len + 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s->udata.p = syms[i];
3161 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3165 bfd_vma glink_vma = 0, resolv_vma = 0;
3166 asection *dynamic, *glink = NULL, *relplt = NULL;
3169 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3173 free_contents_and_exit:
3181 for (i = secsymend; i < opdsymend; ++i)
3185 /* Ignore bogus symbols. */
3186 if (syms[i]->value > opd->size - 8)
3189 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3190 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3193 size += sizeof (asymbol);
3194 size += strlen (syms[i]->name) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3202 bfd_byte *dynbuf, *extdyn, *extdynend;
3204 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3206 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3207 goto free_contents_and_exit;
3209 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3210 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3213 extdynend = extdyn + dynamic->size;
3214 for (; extdyn < extdynend; extdyn += extdynsize)
3216 Elf_Internal_Dyn dyn;
3217 (*swap_dyn_in) (abfd, extdyn, &dyn);
3219 if (dyn.d_tag == DT_NULL)
3222 if (dyn.d_tag == DT_PPC64_GLINK)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma = dyn.d_un.d_val + 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink = bfd_sections_find_if (abfd, section_covers_vma,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd, glink, buf,
3245 glink_vma + 4 - glink->vma, 4))
3247 unsigned int insn = bfd_get_32 (abfd, buf);
3249 if ((insn & ~0x3fffffc) == 0)
3250 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3254 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3256 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3259 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3260 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3261 goto free_contents_and_exit;
3263 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3264 size += plt_count * sizeof (asymbol);
3266 p = relplt->relocation;
3267 for (i = 0; i < plt_count; i++, p++)
3269 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3271 size += sizeof ("+0x") - 1 + 16;
3276 s = *ret = bfd_malloc (size);
3278 goto free_contents_and_exit;
3280 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3282 for (i = secsymend; i < opdsymend; ++i)
3286 if (syms[i]->value > opd->size - 8)
3289 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3290 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3294 asection *sec = abfd->sections;
3301 long mid = (lo + hi) >> 1;
3302 if (syms[mid]->section->vma < ent)
3304 else if (syms[mid]->section->vma > ent)
3308 sec = syms[mid]->section;
3313 if (lo >= hi && lo > codesecsym)
3314 sec = syms[lo - 1]->section;
3316 for (; sec != NULL; sec = sec->next)
3320 /* SEC_LOAD may not be set if SEC is from a separate debug
3322 if ((sec->flags & SEC_ALLOC) == 0)
3324 if ((sec->flags & SEC_CODE) != 0)
3327 s->flags |= BSF_SYNTHETIC;
3328 s->value = ent - s->section->vma;
3331 len = strlen (syms[i]->name);
3332 memcpy (names, syms[i]->name, len + 1);
3334 /* Have udata.p point back to the original symbol this
3335 synthetic symbol was derived from. */
3336 s->udata.p = syms[i];
3342 if (glink != NULL && relplt != NULL)
3346 /* Add a symbol for the main glink trampoline. */
3347 memset (s, 0, sizeof *s);
3349 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3351 s->value = resolv_vma - glink->vma;
3353 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3354 names += sizeof ("__glink_PLTresolve");
3359 /* FIXME: It would be very much nicer to put sym@plt on the
3360 stub rather than on the glink branch table entry. The
3361 objdump disassembler would then use a sensible symbol
3362 name on plt calls. The difficulty in doing so is
3363 a) finding the stubs, and,
3364 b) matching stubs against plt entries, and,
3365 c) there can be multiple stubs for a given plt entry.
3367 Solving (a) could be done by code scanning, but older
3368 ppc64 binaries used different stubs to current code.
3369 (b) is the tricky one since you need to known the toc
3370 pointer for at least one function that uses a pic stub to
3371 be able to calculate the plt address referenced.
3372 (c) means gdb would need to set multiple breakpoints (or
3373 find the glink branch itself) when setting breakpoints
3374 for pending shared library loads. */
3375 p = relplt->relocation;
3376 for (i = 0; i < plt_count; i++, p++)
3380 *s = **p->sym_ptr_ptr;
3381 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3382 we are defining a symbol, ensure one of them is set. */
3383 if ((s->flags & BSF_LOCAL) == 0)
3384 s->flags |= BSF_GLOBAL;
3385 s->flags |= BSF_SYNTHETIC;
3387 s->value = glink_vma - glink->vma;
3390 len = strlen ((*p->sym_ptr_ptr)->name);
3391 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3395 memcpy (names, "+0x", sizeof ("+0x") - 1);
3396 names += sizeof ("+0x") - 1;
3397 bfd_sprintf_vma (abfd, names, p->addend);
3398 names += strlen (names);
3400 memcpy (names, "@plt", sizeof ("@plt"));
3401 names += sizeof ("@plt");
3416 /* The following functions are specific to the ELF linker, while
3417 functions above are used generally. Those named ppc64_elf_* are
3418 called by the main ELF linker code. They appear in this file more
3419 or less in the order in which they are called. eg.
3420 ppc64_elf_check_relocs is called early in the link process,
3421 ppc64_elf_finish_dynamic_sections is one of the last functions
3424 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3425 functions have both a function code symbol and a function descriptor
3426 symbol. A call to foo in a relocatable object file looks like:
3433 The function definition in another object file might be:
3437 . .quad .TOC.@tocbase
3443 When the linker resolves the call during a static link, the branch
3444 unsurprisingly just goes to .foo and the .opd information is unused.
3445 If the function definition is in a shared library, things are a little
3446 different: The call goes via a plt call stub, the opd information gets
3447 copied to the plt, and the linker patches the nop.
3455 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3456 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3457 . std 2,40(1) # this is the general idea
3465 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3467 The "reloc ()" notation is supposed to indicate that the linker emits
3468 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3471 What are the difficulties here? Well, firstly, the relocations
3472 examined by the linker in check_relocs are against the function code
3473 sym .foo, while the dynamic relocation in the plt is emitted against
3474 the function descriptor symbol, foo. Somewhere along the line, we need
3475 to carefully copy dynamic link information from one symbol to the other.
3476 Secondly, the generic part of the elf linker will make .foo a dynamic
3477 symbol as is normal for most other backends. We need foo dynamic
3478 instead, at least for an application final link. However, when
3479 creating a shared library containing foo, we need to have both symbols
3480 dynamic so that references to .foo are satisfied during the early
3481 stages of linking. Otherwise the linker might decide to pull in a
3482 definition from some other object, eg. a static library.
3484 Update: As of August 2004, we support a new convention. Function
3485 calls may use the function descriptor symbol, ie. "bl foo". This
3486 behaves exactly as "bl .foo". */
3488 /* Of those relocs that might be copied as dynamic relocs, this function
3489 selects those that must be copied when linking a shared library,
3490 even when the symbol is local. */
3493 must_be_dyn_reloc (struct bfd_link_info *info,
3494 enum elf_ppc64_reloc_type r_type)
3506 case R_PPC64_TPREL16:
3507 case R_PPC64_TPREL16_LO:
3508 case R_PPC64_TPREL16_HI:
3509 case R_PPC64_TPREL16_HA:
3510 case R_PPC64_TPREL16_DS:
3511 case R_PPC64_TPREL16_LO_DS:
3512 case R_PPC64_TPREL16_HIGHER:
3513 case R_PPC64_TPREL16_HIGHERA:
3514 case R_PPC64_TPREL16_HIGHEST:
3515 case R_PPC64_TPREL16_HIGHESTA:
3516 case R_PPC64_TPREL64:
3517 return !info->executable;
3521 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3522 copying dynamic variables from a shared lib into an app's dynbss
3523 section, and instead use a dynamic relocation to point into the
3524 shared lib. With code that gcc generates, it's vital that this be
3525 enabled; In the PowerPC64 ABI, the address of a function is actually
3526 the address of a function descriptor, which resides in the .opd
3527 section. gcc uses the descriptor directly rather than going via the
3528 GOT as some other ABI's do, which means that initialized function
3529 pointers must reference the descriptor. Thus, a function pointer
3530 initialized to the address of a function in a shared library will
3531 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3532 redefines the function descriptor symbol to point to the copy. This
3533 presents a problem as a plt entry for that function is also
3534 initialized from the function descriptor symbol and the copy reloc
3535 may not be initialized first. */
3536 #define ELIMINATE_COPY_RELOCS 1
3538 /* Section name for stubs is the associated section name plus this
3540 #define STUB_SUFFIX ".stub"
3543 ppc_stub_long_branch:
3544 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3545 destination, but a 24 bit branch in a stub section will reach.
3548 ppc_stub_plt_branch:
3549 Similar to the above, but a 24 bit branch in the stub section won't
3550 reach its destination.
3551 . addis %r12,%r2,xxx@toc@ha
3552 . ld %r11,xxx@toc@l(%r12)
3557 Used to call a function in a shared library. If it so happens that
3558 the plt entry referenced crosses a 64k boundary, then an extra
3559 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3560 . addis %r12,%r2,xxx@toc@ha
3562 . ld %r11,xxx+0@toc@l(%r12)
3564 . ld %r2,xxx+8@toc@l(%r12)
3565 . ld %r11,xxx+16@toc@l(%r12)
3568 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3569 code to adjust the value and save r2 to support multiple toc sections.
3570 A ppc_stub_long_branch with an r2 offset looks like:
3572 . addis %r2,%r2,off@ha
3573 . addi %r2,%r2,off@l
3576 A ppc_stub_plt_branch with an r2 offset looks like:
3578 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx@toc@l(%r12)
3580 . addis %r2,%r2,off@ha
3581 . addi %r2,%r2,off@l
3585 In cases where the "addis" instruction would add zero, the "addis" is
3586 omitted and following instructions modified slightly in some cases.
3589 enum ppc_stub_type {
3591 ppc_stub_long_branch,
3592 ppc_stub_long_branch_r2off,
3593 ppc_stub_plt_branch,
3594 ppc_stub_plt_branch_r2off,
3596 ppc_stub_plt_call_r2save
3599 struct ppc_stub_hash_entry {
3601 /* Base hash table entry structure. */
3602 struct bfd_hash_entry root;
3604 enum ppc_stub_type stub_type;
3606 /* The stub section. */
3609 /* Offset within stub_sec of the beginning of this stub. */
3610 bfd_vma stub_offset;
3612 /* Given the symbol's value and its section we can determine its final
3613 value when building the stubs (so the stub knows where to jump. */
3614 bfd_vma target_value;
3615 asection *target_section;
3617 /* The symbol table entry, if any, that this was derived from. */
3618 struct ppc_link_hash_entry *h;
3619 struct plt_entry *plt_ent;
3621 /* And the reloc addend that this was derived from. */
3624 /* Where this stub is being called from, or, in the case of combined
3625 stub sections, the first input section in the group. */
3629 struct ppc_branch_hash_entry {
3631 /* Base hash table entry structure. */
3632 struct bfd_hash_entry root;
3634 /* Offset within branch lookup table. */
3635 unsigned int offset;
3637 /* Generation marker. */
3641 struct ppc_link_hash_entry
3643 struct elf_link_hash_entry elf;
3646 /* A pointer to the most recently used stub hash entry against this
3648 struct ppc_stub_hash_entry *stub_cache;
3650 /* A pointer to the next symbol starting with a '.' */
3651 struct ppc_link_hash_entry *next_dot_sym;
3654 /* Track dynamic relocs copied for this symbol. */
3655 struct elf_dyn_relocs *dyn_relocs;
3657 /* Link between function code and descriptor symbols. */
3658 struct ppc_link_hash_entry *oh;
3660 /* Flag function code and descriptor symbols. */
3661 unsigned int is_func:1;
3662 unsigned int is_func_descriptor:1;
3663 unsigned int fake:1;
3665 /* Whether global opd/toc sym has been adjusted or not.
3666 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3667 should be set for all globals defined in any opd/toc section. */
3668 unsigned int adjust_done:1;
3670 /* Set if we twiddled this symbol to weak at some stage. */
3671 unsigned int was_undefined:1;
3673 /* Contexts in which symbol is used in the GOT (or TOC).
3674 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3675 corresponding relocs are encountered during check_relocs.
3676 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3677 indicate the corresponding GOT entry type is not needed.
3678 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3679 a TPREL one. We use a separate flag rather than setting TPREL
3680 just for convenience in distinguishing the two cases. */
3681 #define TLS_GD 1 /* GD reloc. */
3682 #define TLS_LD 2 /* LD reloc. */
3683 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3684 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3685 #define TLS_TLS 16 /* Any TLS reloc. */
3686 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3687 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3688 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3689 unsigned char tls_mask;
3692 /* ppc64 ELF linker hash table. */
3694 struct ppc_link_hash_table
3696 struct elf_link_hash_table elf;
3698 /* The stub hash table. */
3699 struct bfd_hash_table stub_hash_table;
3701 /* Another hash table for plt_branch stubs. */
3702 struct bfd_hash_table branch_hash_table;
3704 /* Hash table for function prologue tocsave. */
3705 htab_t tocsave_htab;
3707 /* Linker stub bfd. */
3710 /* Linker call-backs. */
3711 asection * (*add_stub_section) (const char *, asection *);
3712 void (*layout_sections_again) (void);
3714 /* Array to keep track of which stub sections have been created, and
3715 information on stub grouping. */
3717 /* This is the section to which stubs in the group will be attached. */
3719 /* The stub section. */
3721 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3725 /* Temp used when calculating TOC pointers. */
3728 asection *toc_first_sec;
3730 /* Highest input section id. */
3733 /* Highest output section index. */
3736 /* Used when adding symbols. */
3737 struct ppc_link_hash_entry *dot_syms;
3739 /* List of input sections for each output section. */
3740 asection **input_list;
3742 /* Short-cuts to get to dynamic linker sections. */
3754 asection *glink_eh_frame;
3756 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3757 struct ppc_link_hash_entry *tls_get_addr;
3758 struct ppc_link_hash_entry *tls_get_addr_fd;
3760 /* The size of reliplt used by got entry relocs. */
3761 bfd_size_type got_reli_size;
3764 unsigned long stub_count[ppc_stub_plt_call_r2save];
3766 /* Number of stubs against global syms. */
3767 unsigned long stub_globals;
3769 /* Alignment of PLT call stubs. */
3770 unsigned int plt_stub_align:4;
3772 /* Set if PLT call stubs should load r11. */
3773 unsigned int plt_static_chain:1;
3775 /* Set if PLT call stubs need a read-read barrier. */
3776 unsigned int plt_thread_safe:1;
3778 /* Set if we should emit symbols for stubs. */
3779 unsigned int emit_stub_syms:1;
3781 /* Set if __tls_get_addr optimization should not be done. */
3782 unsigned int no_tls_get_addr_opt:1;
3784 /* Support for multiple toc sections. */
3785 unsigned int do_multi_toc:1;
3786 unsigned int multi_toc_needed:1;
3787 unsigned int second_toc_pass:1;
3788 unsigned int do_toc_opt:1;
3791 unsigned int stub_error:1;
3793 /* Temp used by ppc64_elf_process_dot_syms. */
3794 unsigned int twiddled_syms:1;
3796 /* Incremented every time we size stubs. */
3797 unsigned int stub_iteration;
3799 /* Small local sym cache. */
3800 struct sym_cache sym_cache;
3803 /* Rename some of the generic section flags to better document how they
3806 /* Nonzero if this section has TLS related relocations. */
3807 #define has_tls_reloc sec_flg0
3809 /* Nonzero if this section has a call to __tls_get_addr. */
3810 #define has_tls_get_addr_call sec_flg1
3812 /* Nonzero if this section has any toc or got relocs. */
3813 #define has_toc_reloc sec_flg2
3815 /* Nonzero if this section has a call to another section that uses
3817 #define makes_toc_func_call sec_flg3
3819 /* Recursion protection when determining above flag. */
3820 #define call_check_in_progress sec_flg4
3821 #define call_check_done sec_flg5
3823 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3825 #define ppc_hash_table(p) \
3826 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3827 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3829 #define ppc_stub_hash_lookup(table, string, create, copy) \
3830 ((struct ppc_stub_hash_entry *) \
3831 bfd_hash_lookup ((table), (string), (create), (copy)))
3833 #define ppc_branch_hash_lookup(table, string, create, copy) \
3834 ((struct ppc_branch_hash_entry *) \
3835 bfd_hash_lookup ((table), (string), (create), (copy)))
3837 /* Create an entry in the stub hash table. */
3839 static struct bfd_hash_entry *
3840 stub_hash_newfunc (struct bfd_hash_entry *entry,
3841 struct bfd_hash_table *table,
3844 /* Allocate the structure if it has not already been allocated by a
3848 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3853 /* Call the allocation method of the superclass. */
3854 entry = bfd_hash_newfunc (entry, table, string);
3857 struct ppc_stub_hash_entry *eh;
3859 /* Initialize the local fields. */
3860 eh = (struct ppc_stub_hash_entry *) entry;
3861 eh->stub_type = ppc_stub_none;
3862 eh->stub_sec = NULL;
3863 eh->stub_offset = 0;
3864 eh->target_value = 0;
3865 eh->target_section = NULL;
3873 /* Create an entry in the branch hash table. */
3875 static struct bfd_hash_entry *
3876 branch_hash_newfunc (struct bfd_hash_entry *entry,
3877 struct bfd_hash_table *table,
3880 /* Allocate the structure if it has not already been allocated by a
3884 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3889 /* Call the allocation method of the superclass. */
3890 entry = bfd_hash_newfunc (entry, table, string);
3893 struct ppc_branch_hash_entry *eh;
3895 /* Initialize the local fields. */
3896 eh = (struct ppc_branch_hash_entry *) entry;
3904 /* Create an entry in a ppc64 ELF linker hash table. */
3906 static struct bfd_hash_entry *
3907 link_hash_newfunc (struct bfd_hash_entry *entry,
3908 struct bfd_hash_table *table,
3911 /* Allocate the structure if it has not already been allocated by a
3915 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3920 /* Call the allocation method of the superclass. */
3921 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3924 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3926 memset (&eh->u.stub_cache, 0,
3927 (sizeof (struct ppc_link_hash_entry)
3928 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3930 /* When making function calls, old ABI code references function entry
3931 points (dot symbols), while new ABI code references the function
3932 descriptor symbol. We need to make any combination of reference and
3933 definition work together, without breaking archive linking.
3935 For a defined function "foo" and an undefined call to "bar":
3936 An old object defines "foo" and ".foo", references ".bar" (possibly
3938 A new object defines "foo" and references "bar".
3940 A new object thus has no problem with its undefined symbols being
3941 satisfied by definitions in an old object. On the other hand, the
3942 old object won't have ".bar" satisfied by a new object.
3944 Keep a list of newly added dot-symbols. */
3946 if (string[0] == '.')
3948 struct ppc_link_hash_table *htab;
3950 htab = (struct ppc_link_hash_table *) table;
3951 eh->u.next_dot_sym = htab->dot_syms;
3952 htab->dot_syms = eh;
3959 struct tocsave_entry {
3965 tocsave_htab_hash (const void *p)
3967 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
3968 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
3972 tocsave_htab_eq (const void *p1, const void *p2)
3974 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
3975 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
3976 return e1->sec == e2->sec && e1->offset == e2->offset;
3979 /* Create a ppc64 ELF linker hash table. */
3981 static struct bfd_link_hash_table *
3982 ppc64_elf_link_hash_table_create (bfd *abfd)
3984 struct ppc_link_hash_table *htab;
3985 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3987 htab = bfd_zmalloc (amt);
3991 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3992 sizeof (struct ppc_link_hash_entry),
3999 /* Init the stub hash table too. */
4000 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4001 sizeof (struct ppc_stub_hash_entry)))
4004 /* And the branch hash table. */
4005 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4006 sizeof (struct ppc_branch_hash_entry)))
4009 htab->tocsave_htab = htab_try_create (1024,
4013 if (htab->tocsave_htab == NULL)
4016 /* Initializing two fields of the union is just cosmetic. We really
4017 only care about glist, but when compiled on a 32-bit host the
4018 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4019 debugger inspection of these fields look nicer. */
4020 htab->elf.init_got_refcount.refcount = 0;
4021 htab->elf.init_got_refcount.glist = NULL;
4022 htab->elf.init_plt_refcount.refcount = 0;
4023 htab->elf.init_plt_refcount.glist = NULL;
4024 htab->elf.init_got_offset.offset = 0;
4025 htab->elf.init_got_offset.glist = NULL;
4026 htab->elf.init_plt_offset.offset = 0;
4027 htab->elf.init_plt_offset.glist = NULL;
4029 return &htab->elf.root;
4032 /* Free the derived linker hash table. */
4035 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4037 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4039 bfd_hash_table_free (&htab->stub_hash_table);
4040 bfd_hash_table_free (&htab->branch_hash_table);
4041 if (htab->tocsave_htab)
4042 htab_delete (htab->tocsave_htab);
4043 _bfd_generic_link_hash_table_free (hash);
4046 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4049 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4051 struct ppc_link_hash_table *htab;
4053 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4055 /* Always hook our dynamic sections into the first bfd, which is the
4056 linker created stub bfd. This ensures that the GOT header is at
4057 the start of the output TOC section. */
4058 htab = ppc_hash_table (info);
4061 htab->stub_bfd = abfd;
4062 htab->elf.dynobj = abfd;
4065 /* Build a name for an entry in the stub hash table. */
4068 ppc_stub_name (const asection *input_section,
4069 const asection *sym_sec,
4070 const struct ppc_link_hash_entry *h,
4071 const Elf_Internal_Rela *rel)
4076 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4077 offsets from a sym as a branch target? In fact, we could
4078 probably assume the addend is always zero. */
4079 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4083 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4084 stub_name = bfd_malloc (len);
4085 if (stub_name == NULL)
4088 sprintf (stub_name, "%08x.%s+%x",
4089 input_section->id & 0xffffffff,
4090 h->elf.root.root.string,
4091 (int) rel->r_addend & 0xffffffff);
4095 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4096 stub_name = bfd_malloc (len);
4097 if (stub_name == NULL)
4100 sprintf (stub_name, "%08x.%x:%x+%x",
4101 input_section->id & 0xffffffff,
4102 sym_sec->id & 0xffffffff,
4103 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4104 (int) rel->r_addend & 0xffffffff);
4106 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4107 stub_name[len - 2] = 0;
4111 /* Look up an entry in the stub hash. Stub entries are cached because
4112 creating the stub name takes a bit of time. */
4114 static struct ppc_stub_hash_entry *
4115 ppc_get_stub_entry (const asection *input_section,
4116 const asection *sym_sec,
4117 struct ppc_link_hash_entry *h,
4118 const Elf_Internal_Rela *rel,
4119 struct ppc_link_hash_table *htab)
4121 struct ppc_stub_hash_entry *stub_entry;
4122 const asection *id_sec;
4124 /* If this input section is part of a group of sections sharing one
4125 stub section, then use the id of the first section in the group.
4126 Stub names need to include a section id, as there may well be
4127 more than one stub used to reach say, printf, and we need to
4128 distinguish between them. */
4129 id_sec = htab->stub_group[input_section->id].link_sec;
4131 if (h != NULL && h->u.stub_cache != NULL
4132 && h->u.stub_cache->h == h
4133 && h->u.stub_cache->id_sec == id_sec)
4135 stub_entry = h->u.stub_cache;
4141 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4142 if (stub_name == NULL)
4145 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4146 stub_name, FALSE, FALSE);
4148 h->u.stub_cache = stub_entry;
4156 /* Add a new stub entry to the stub hash. Not all fields of the new
4157 stub entry are initialised. */
4159 static struct ppc_stub_hash_entry *
4160 ppc_add_stub (const char *stub_name,
4162 struct bfd_link_info *info)
4164 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4167 struct ppc_stub_hash_entry *stub_entry;
4169 link_sec = htab->stub_group[section->id].link_sec;
4170 stub_sec = htab->stub_group[section->id].stub_sec;
4171 if (stub_sec == NULL)
4173 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4174 if (stub_sec == NULL)
4180 namelen = strlen (link_sec->name);
4181 len = namelen + sizeof (STUB_SUFFIX);
4182 s_name = bfd_alloc (htab->stub_bfd, len);
4186 memcpy (s_name, link_sec->name, namelen);
4187 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4188 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4189 if (stub_sec == NULL)
4191 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4193 htab->stub_group[section->id].stub_sec = stub_sec;
4196 /* Enter this entry into the linker stub hash table. */
4197 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4199 if (stub_entry == NULL)
4201 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4202 section->owner, stub_name);
4206 stub_entry->stub_sec = stub_sec;
4207 stub_entry->stub_offset = 0;
4208 stub_entry->id_sec = link_sec;
4212 /* Create sections for linker generated code. */
4215 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4217 struct ppc_link_hash_table *htab;
4220 htab = ppc_hash_table (info);
4224 /* Create .sfpr for code to save and restore fp regs. */
4225 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4226 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4227 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4229 if (htab->sfpr == NULL
4230 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4233 /* Create .glink for lazy dynamic linking support. */
4234 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4236 if (htab->glink == NULL
4237 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4240 if (!info->no_ld_generated_unwind_info)
4242 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4243 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4244 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4247 if (htab->glink_eh_frame == NULL
4248 || !bfd_set_section_alignment (abfd, htab->glink_eh_frame, 2))
4252 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4253 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4254 if (htab->iplt == NULL
4255 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4263 if (htab->reliplt == NULL
4264 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4267 /* Create branch lookup table for plt_branch stubs. */
4268 flags = (SEC_ALLOC | SEC_LOAD
4269 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4270 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4272 if (htab->brlt == NULL
4273 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4279 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4280 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4281 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4284 if (htab->relbrlt == NULL
4285 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4291 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4292 not already done. */
4295 create_got_section (bfd *abfd, struct bfd_link_info *info)
4297 asection *got, *relgot;
4299 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4301 if (!is_ppc64_elf (abfd))
4308 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4311 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4316 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4317 | SEC_LINKER_CREATED);
4319 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4321 || !bfd_set_section_alignment (abfd, got, 3))
4324 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4325 flags | SEC_READONLY);
4327 || ! bfd_set_section_alignment (abfd, relgot, 3))
4330 ppc64_elf_tdata (abfd)->got = got;
4331 ppc64_elf_tdata (abfd)->relgot = relgot;
4335 /* Create the dynamic sections, and set up shortcuts. */
4338 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4340 struct ppc_link_hash_table *htab;
4342 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4345 htab = ppc_hash_table (info);
4350 htab->got = bfd_get_section_by_name (dynobj, ".got");
4351 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4352 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4353 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
4355 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
4357 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4358 || (!info->shared && !htab->relbss))
4364 /* Follow indirect and warning symbol links. */
4366 static inline struct bfd_link_hash_entry *
4367 follow_link (struct bfd_link_hash_entry *h)
4369 while (h->type == bfd_link_hash_indirect
4370 || h->type == bfd_link_hash_warning)
4375 static inline struct elf_link_hash_entry *
4376 elf_follow_link (struct elf_link_hash_entry *h)
4378 return (struct elf_link_hash_entry *) follow_link (&h->root);
4381 static inline struct ppc_link_hash_entry *
4382 ppc_follow_link (struct ppc_link_hash_entry *h)
4384 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4387 /* Merge PLT info on FROM with that on TO. */
4390 move_plt_plist (struct ppc_link_hash_entry *from,
4391 struct ppc_link_hash_entry *to)
4393 if (from->elf.plt.plist != NULL)
4395 if (to->elf.plt.plist != NULL)
4397 struct plt_entry **entp;
4398 struct plt_entry *ent;
4400 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4402 struct plt_entry *dent;
4404 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4405 if (dent->addend == ent->addend)
4407 dent->plt.refcount += ent->plt.refcount;
4414 *entp = to->elf.plt.plist;
4417 to->elf.plt.plist = from->elf.plt.plist;
4418 from->elf.plt.plist = NULL;
4422 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4425 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4426 struct elf_link_hash_entry *dir,
4427 struct elf_link_hash_entry *ind)
4429 struct ppc_link_hash_entry *edir, *eind;
4431 edir = (struct ppc_link_hash_entry *) dir;
4432 eind = (struct ppc_link_hash_entry *) ind;
4434 edir->is_func |= eind->is_func;
4435 edir->is_func_descriptor |= eind->is_func_descriptor;
4436 edir->tls_mask |= eind->tls_mask;
4437 if (eind->oh != NULL)
4438 edir->oh = ppc_follow_link (eind->oh);
4440 /* If called to transfer flags for a weakdef during processing
4441 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4442 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4443 if (!(ELIMINATE_COPY_RELOCS
4444 && eind->elf.root.type != bfd_link_hash_indirect
4445 && edir->elf.dynamic_adjusted))
4446 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4448 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4449 edir->elf.ref_regular |= eind->elf.ref_regular;
4450 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4451 edir->elf.needs_plt |= eind->elf.needs_plt;
4453 /* Copy over any dynamic relocs we may have on the indirect sym. */
4454 if (eind->dyn_relocs != NULL)
4456 if (edir->dyn_relocs != NULL)
4458 struct elf_dyn_relocs **pp;
4459 struct elf_dyn_relocs *p;
4461 /* Add reloc counts against the indirect sym to the direct sym
4462 list. Merge any entries against the same section. */
4463 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4465 struct elf_dyn_relocs *q;
4467 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4468 if (q->sec == p->sec)
4470 q->pc_count += p->pc_count;
4471 q->count += p->count;
4478 *pp = edir->dyn_relocs;
4481 edir->dyn_relocs = eind->dyn_relocs;
4482 eind->dyn_relocs = NULL;
4485 /* If we were called to copy over info for a weak sym, that's all.
4486 You might think dyn_relocs need not be copied over; After all,
4487 both syms will be dynamic or both non-dynamic so we're just
4488 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4489 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4490 dyn_relocs in read-only sections, and it does so on what is the
4492 if (eind->elf.root.type != bfd_link_hash_indirect)
4495 /* Copy over got entries that we may have already seen to the
4496 symbol which just became indirect. */
4497 if (eind->elf.got.glist != NULL)
4499 if (edir->elf.got.glist != NULL)
4501 struct got_entry **entp;
4502 struct got_entry *ent;
4504 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4506 struct got_entry *dent;
4508 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4509 if (dent->addend == ent->addend
4510 && dent->owner == ent->owner
4511 && dent->tls_type == ent->tls_type)
4513 dent->got.refcount += ent->got.refcount;
4520 *entp = edir->elf.got.glist;
4523 edir->elf.got.glist = eind->elf.got.glist;
4524 eind->elf.got.glist = NULL;
4527 /* And plt entries. */
4528 move_plt_plist (eind, edir);
4530 if (eind->elf.dynindx != -1)
4532 if (edir->elf.dynindx != -1)
4533 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4534 edir->elf.dynstr_index);
4535 edir->elf.dynindx = eind->elf.dynindx;
4536 edir->elf.dynstr_index = eind->elf.dynstr_index;
4537 eind->elf.dynindx = -1;
4538 eind->elf.dynstr_index = 0;
4542 /* Find the function descriptor hash entry from the given function code
4543 hash entry FH. Link the entries via their OH fields. */
4545 static struct ppc_link_hash_entry *
4546 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4548 struct ppc_link_hash_entry *fdh = fh->oh;
4552 const char *fd_name = fh->elf.root.root.string + 1;
4554 fdh = (struct ppc_link_hash_entry *)
4555 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4559 fdh->is_func_descriptor = 1;
4565 return ppc_follow_link (fdh);
4568 /* Make a fake function descriptor sym for the code sym FH. */
4570 static struct ppc_link_hash_entry *
4571 make_fdh (struct bfd_link_info *info,
4572 struct ppc_link_hash_entry *fh)
4576 struct bfd_link_hash_entry *bh;
4577 struct ppc_link_hash_entry *fdh;
4579 abfd = fh->elf.root.u.undef.abfd;
4580 newsym = bfd_make_empty_symbol (abfd);
4581 newsym->name = fh->elf.root.root.string + 1;
4582 newsym->section = bfd_und_section_ptr;
4584 newsym->flags = BSF_WEAK;
4587 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4588 newsym->flags, newsym->section,
4589 newsym->value, NULL, FALSE, FALSE,
4593 fdh = (struct ppc_link_hash_entry *) bh;
4594 fdh->elf.non_elf = 0;
4596 fdh->is_func_descriptor = 1;
4603 /* Fix function descriptor symbols defined in .opd sections to be
4607 ppc64_elf_add_symbol_hook (bfd *ibfd,
4608 struct bfd_link_info *info,
4609 Elf_Internal_Sym *isym,
4610 const char **name ATTRIBUTE_UNUSED,
4611 flagword *flags ATTRIBUTE_UNUSED,
4613 bfd_vma *value ATTRIBUTE_UNUSED)
4615 if ((ibfd->flags & DYNAMIC) == 0
4616 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4617 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4619 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4621 if ((ibfd->flags & DYNAMIC) == 0)
4622 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4624 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4626 else if (*sec != NULL
4627 && strcmp ((*sec)->name, ".opd") == 0)
4628 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4633 /* This function makes an old ABI object reference to ".bar" cause the
4634 inclusion of a new ABI object archive that defines "bar".
4635 NAME is a symbol defined in an archive. Return a symbol in the hash
4636 table that might be satisfied by the archive symbols. */
4638 static struct elf_link_hash_entry *
4639 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4640 struct bfd_link_info *info,
4643 struct elf_link_hash_entry *h;
4647 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4649 /* Don't return this sym if it is a fake function descriptor
4650 created by add_symbol_adjust. */
4651 && !(h->root.type == bfd_link_hash_undefweak
4652 && ((struct ppc_link_hash_entry *) h)->fake))
4658 len = strlen (name);
4659 dot_name = bfd_alloc (abfd, len + 2);
4660 if (dot_name == NULL)
4661 return (struct elf_link_hash_entry *) 0 - 1;
4663 memcpy (dot_name + 1, name, len + 1);
4664 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4665 bfd_release (abfd, dot_name);
4669 /* This function satisfies all old ABI object references to ".bar" if a
4670 new ABI object defines "bar". Well, at least, undefined dot symbols
4671 are made weak. This stops later archive searches from including an
4672 object if we already have a function descriptor definition. It also
4673 prevents the linker complaining about undefined symbols.
4674 We also check and correct mismatched symbol visibility here. The
4675 most restrictive visibility of the function descriptor and the
4676 function entry symbol is used. */
4679 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4681 struct ppc_link_hash_table *htab;
4682 struct ppc_link_hash_entry *fdh;
4684 if (eh->elf.root.type == bfd_link_hash_indirect)
4687 if (eh->elf.root.type == bfd_link_hash_warning)
4688 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4690 if (eh->elf.root.root.string[0] != '.')
4693 htab = ppc_hash_table (info);
4697 fdh = lookup_fdh (eh, htab);
4700 if (!info->relocatable
4701 && (eh->elf.root.type == bfd_link_hash_undefined
4702 || eh->elf.root.type == bfd_link_hash_undefweak)
4703 && eh->elf.ref_regular)
4705 /* Make an undefweak function descriptor sym, which is enough to
4706 pull in an --as-needed shared lib, but won't cause link
4707 errors. Archives are handled elsewhere. */
4708 fdh = make_fdh (info, eh);
4711 fdh->elf.ref_regular = 1;
4716 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4717 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4718 if (entry_vis < descr_vis)
4719 fdh->elf.other += entry_vis - descr_vis;
4720 else if (entry_vis > descr_vis)
4721 eh->elf.other += descr_vis - entry_vis;
4723 if ((fdh->elf.root.type == bfd_link_hash_defined
4724 || fdh->elf.root.type == bfd_link_hash_defweak)
4725 && eh->elf.root.type == bfd_link_hash_undefined)
4727 eh->elf.root.type = bfd_link_hash_undefweak;
4728 eh->was_undefined = 1;
4729 htab->twiddled_syms = 1;
4736 /* Process list of dot-symbols we made in link_hash_newfunc. */
4739 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4741 struct ppc_link_hash_table *htab;
4742 struct ppc_link_hash_entry **p, *eh;
4744 if (!is_ppc64_elf (info->output_bfd))
4746 htab = ppc_hash_table (info);
4750 if (is_ppc64_elf (ibfd))
4752 p = &htab->dot_syms;
4753 while ((eh = *p) != NULL)
4756 if (!add_symbol_adjust (eh, info))
4758 p = &eh->u.next_dot_sym;
4762 /* Clear the list for non-ppc64 input files. */
4763 p = &htab->dot_syms;
4764 while ((eh = *p) != NULL)
4767 p = &eh->u.next_dot_sym;
4770 /* We need to fix the undefs list for any syms we have twiddled to
4772 if (htab->twiddled_syms)
4774 bfd_link_repair_undef_list (&htab->elf.root);
4775 htab->twiddled_syms = 0;
4780 /* Undo hash table changes when an --as-needed input file is determined
4781 not to be needed. */
4784 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4785 struct bfd_link_info *info)
4787 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4792 htab->dot_syms = NULL;
4796 /* If --just-symbols against a final linked binary, then assume we need
4797 toc adjusting stubs when calling functions defined there. */
4800 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4802 if ((sec->flags & SEC_CODE) != 0
4803 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
4804 && is_ppc64_elf (sec->owner))
4806 asection *got = bfd_get_section_by_name (sec->owner, ".got");
4808 && got->size >= elf_backend_got_header_size
4809 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
4810 sec->has_toc_reloc = 1;
4812 _bfd_elf_link_just_syms (sec, info);
4815 static struct plt_entry **
4816 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4817 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4819 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4820 struct plt_entry **local_plt;
4821 unsigned char *local_got_tls_masks;
4823 if (local_got_ents == NULL)
4825 bfd_size_type size = symtab_hdr->sh_info;
4827 size *= (sizeof (*local_got_ents)
4828 + sizeof (*local_plt)
4829 + sizeof (*local_got_tls_masks));
4830 local_got_ents = bfd_zalloc (abfd, size);
4831 if (local_got_ents == NULL)
4833 elf_local_got_ents (abfd) = local_got_ents;
4836 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4838 struct got_entry *ent;
4840 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4841 if (ent->addend == r_addend
4842 && ent->owner == abfd
4843 && ent->tls_type == tls_type)
4847 bfd_size_type amt = sizeof (*ent);
4848 ent = bfd_alloc (abfd, amt);
4851 ent->next = local_got_ents[r_symndx];
4852 ent->addend = r_addend;
4854 ent->tls_type = tls_type;
4855 ent->is_indirect = FALSE;
4856 ent->got.refcount = 0;
4857 local_got_ents[r_symndx] = ent;
4859 ent->got.refcount += 1;
4862 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4863 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
4864 local_got_tls_masks[r_symndx] |= tls_type;
4866 return local_plt + r_symndx;
4870 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4872 struct plt_entry *ent;
4874 for (ent = *plist; ent != NULL; ent = ent->next)
4875 if (ent->addend == addend)
4879 bfd_size_type amt = sizeof (*ent);
4880 ent = bfd_alloc (abfd, amt);
4884 ent->addend = addend;
4885 ent->plt.refcount = 0;
4888 ent->plt.refcount += 1;
4893 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4895 return (r_type == R_PPC64_REL24
4896 || r_type == R_PPC64_REL14
4897 || r_type == R_PPC64_REL14_BRTAKEN
4898 || r_type == R_PPC64_REL14_BRNTAKEN
4899 || r_type == R_PPC64_ADDR24
4900 || r_type == R_PPC64_ADDR14
4901 || r_type == R_PPC64_ADDR14_BRTAKEN
4902 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4905 /* Look through the relocs for a section during the first phase, and
4906 calculate needed space in the global offset table, procedure
4907 linkage table, and dynamic reloc sections. */
4910 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4911 asection *sec, const Elf_Internal_Rela *relocs)
4913 struct ppc_link_hash_table *htab;
4914 Elf_Internal_Shdr *symtab_hdr;
4915 struct elf_link_hash_entry **sym_hashes;
4916 const Elf_Internal_Rela *rel;
4917 const Elf_Internal_Rela *rel_end;
4919 asection **opd_sym_map;
4920 struct elf_link_hash_entry *tga, *dottga;
4922 if (info->relocatable)
4925 /* Don't do anything special with non-loaded, non-alloced sections.
4926 In particular, any relocs in such sections should not affect GOT
4927 and PLT reference counting (ie. we don't allow them to create GOT
4928 or PLT entries), there's no possibility or desire to optimize TLS
4929 relocs, and there's not much point in propagating relocs to shared
4930 libs that the dynamic linker won't relocate. */
4931 if ((sec->flags & SEC_ALLOC) == 0)
4934 BFD_ASSERT (is_ppc64_elf (abfd));
4936 htab = ppc_hash_table (info);
4940 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4941 FALSE, FALSE, TRUE);
4942 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4943 FALSE, FALSE, TRUE);
4944 symtab_hdr = &elf_symtab_hdr (abfd);
4945 sym_hashes = elf_sym_hashes (abfd);
4948 if (strcmp (sec->name, ".opd") == 0)
4950 /* Garbage collection needs some extra help with .opd sections.
4951 We don't want to necessarily keep everything referenced by
4952 relocs in .opd, as that would keep all functions. Instead,
4953 if we reference an .opd symbol (a function descriptor), we
4954 want to keep the function code symbol's section. This is
4955 easy for global symbols, but for local syms we need to keep
4956 information about the associated function section. */
4959 amt = sec->size * sizeof (*opd_sym_map) / 8;
4960 opd_sym_map = bfd_zalloc (abfd, amt);
4961 if (opd_sym_map == NULL)
4963 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4964 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4965 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4968 if (htab->sfpr == NULL
4969 && !create_linkage_sections (htab->elf.dynobj, info))
4972 rel_end = relocs + sec->reloc_count;
4973 for (rel = relocs; rel < rel_end; rel++)
4975 unsigned long r_symndx;
4976 struct elf_link_hash_entry *h;
4977 enum elf_ppc64_reloc_type r_type;
4979 struct _ppc64_elf_section_data *ppc64_sec;
4980 struct plt_entry **ifunc;
4982 r_symndx = ELF64_R_SYM (rel->r_info);
4983 if (r_symndx < symtab_hdr->sh_info)
4987 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4988 h = elf_follow_link (h);
4995 if (h->type == STT_GNU_IFUNC)
4998 ifunc = &h->plt.plist;
5003 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5008 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5010 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5011 rel->r_addend, PLT_IFUNC);
5016 r_type = ELF64_R_TYPE (rel->r_info);
5017 if (is_branch_reloc (r_type))
5019 if (h != NULL && (h == tga || h == dottga))
5022 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5023 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5024 /* We have a new-style __tls_get_addr call with a marker
5028 /* Mark this section as having an old-style call. */
5029 sec->has_tls_get_addr_call = 1;
5032 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5034 && !update_plt_info (abfd, ifunc, rel->r_addend))
5042 /* These special tls relocs tie a call to __tls_get_addr with
5043 its parameter symbol. */
5046 case R_PPC64_GOT_TLSLD16:
5047 case R_PPC64_GOT_TLSLD16_LO:
5048 case R_PPC64_GOT_TLSLD16_HI:
5049 case R_PPC64_GOT_TLSLD16_HA:
5050 tls_type = TLS_TLS | TLS_LD;
5053 case R_PPC64_GOT_TLSGD16:
5054 case R_PPC64_GOT_TLSGD16_LO:
5055 case R_PPC64_GOT_TLSGD16_HI:
5056 case R_PPC64_GOT_TLSGD16_HA:
5057 tls_type = TLS_TLS | TLS_GD;
5060 case R_PPC64_GOT_TPREL16_DS:
5061 case R_PPC64_GOT_TPREL16_LO_DS:
5062 case R_PPC64_GOT_TPREL16_HI:
5063 case R_PPC64_GOT_TPREL16_HA:
5064 if (!info->executable)
5065 info->flags |= DF_STATIC_TLS;
5066 tls_type = TLS_TLS | TLS_TPREL;
5069 case R_PPC64_GOT_DTPREL16_DS:
5070 case R_PPC64_GOT_DTPREL16_LO_DS:
5071 case R_PPC64_GOT_DTPREL16_HI:
5072 case R_PPC64_GOT_DTPREL16_HA:
5073 tls_type = TLS_TLS | TLS_DTPREL;
5075 sec->has_tls_reloc = 1;
5079 case R_PPC64_GOT16_DS:
5080 case R_PPC64_GOT16_HA:
5081 case R_PPC64_GOT16_HI:
5082 case R_PPC64_GOT16_LO:
5083 case R_PPC64_GOT16_LO_DS:
5084 /* This symbol requires a global offset table entry. */
5085 sec->has_toc_reloc = 1;
5086 if (r_type == R_PPC64_GOT_TLSLD16
5087 || r_type == R_PPC64_GOT_TLSGD16
5088 || r_type == R_PPC64_GOT_TPREL16_DS
5089 || r_type == R_PPC64_GOT_DTPREL16_DS
5090 || r_type == R_PPC64_GOT16
5091 || r_type == R_PPC64_GOT16_DS)
5093 htab->do_multi_toc = 1;
5094 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5097 if (ppc64_elf_tdata (abfd)->got == NULL
5098 && !create_got_section (abfd, info))
5103 struct ppc_link_hash_entry *eh;
5104 struct got_entry *ent;
5106 eh = (struct ppc_link_hash_entry *) h;
5107 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5108 if (ent->addend == rel->r_addend
5109 && ent->owner == abfd
5110 && ent->tls_type == tls_type)
5114 bfd_size_type amt = sizeof (*ent);
5115 ent = bfd_alloc (abfd, amt);
5118 ent->next = eh->elf.got.glist;
5119 ent->addend = rel->r_addend;
5121 ent->tls_type = tls_type;
5122 ent->is_indirect = FALSE;
5123 ent->got.refcount = 0;
5124 eh->elf.got.glist = ent;
5126 ent->got.refcount += 1;
5127 eh->tls_mask |= tls_type;
5130 /* This is a global offset table entry for a local symbol. */
5131 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5132 rel->r_addend, tls_type))
5136 case R_PPC64_PLT16_HA:
5137 case R_PPC64_PLT16_HI:
5138 case R_PPC64_PLT16_LO:
5141 /* This symbol requires a procedure linkage table entry. We
5142 actually build the entry in adjust_dynamic_symbol,
5143 because this might be a case of linking PIC code without
5144 linking in any dynamic objects, in which case we don't
5145 need to generate a procedure linkage table after all. */
5148 /* It does not make sense to have a procedure linkage
5149 table entry for a local symbol. */
5150 bfd_set_error (bfd_error_bad_value);
5155 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5158 if (h->root.root.string[0] == '.'
5159 && h->root.root.string[1] != '\0')
5160 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5164 /* The following relocations don't need to propagate the
5165 relocation if linking a shared object since they are
5166 section relative. */
5167 case R_PPC64_SECTOFF:
5168 case R_PPC64_SECTOFF_LO:
5169 case R_PPC64_SECTOFF_HI:
5170 case R_PPC64_SECTOFF_HA:
5171 case R_PPC64_SECTOFF_DS:
5172 case R_PPC64_SECTOFF_LO_DS:
5173 case R_PPC64_DTPREL16:
5174 case R_PPC64_DTPREL16_LO:
5175 case R_PPC64_DTPREL16_HI:
5176 case R_PPC64_DTPREL16_HA:
5177 case R_PPC64_DTPREL16_DS:
5178 case R_PPC64_DTPREL16_LO_DS:
5179 case R_PPC64_DTPREL16_HIGHER:
5180 case R_PPC64_DTPREL16_HIGHERA:
5181 case R_PPC64_DTPREL16_HIGHEST:
5182 case R_PPC64_DTPREL16_HIGHESTA:
5187 case R_PPC64_REL16_LO:
5188 case R_PPC64_REL16_HI:
5189 case R_PPC64_REL16_HA:
5193 case R_PPC64_TOC16_DS:
5194 htab->do_multi_toc = 1;
5195 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5196 case R_PPC64_TOC16_LO:
5197 case R_PPC64_TOC16_HI:
5198 case R_PPC64_TOC16_HA:
5199 case R_PPC64_TOC16_LO_DS:
5200 sec->has_toc_reloc = 1;
5203 /* This relocation describes the C++ object vtable hierarchy.
5204 Reconstruct it for later use during GC. */
5205 case R_PPC64_GNU_VTINHERIT:
5206 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5210 /* This relocation describes which C++ vtable entries are actually
5211 used. Record for later use during GC. */
5212 case R_PPC64_GNU_VTENTRY:
5213 BFD_ASSERT (h != NULL);
5215 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5220 case R_PPC64_REL14_BRTAKEN:
5221 case R_PPC64_REL14_BRNTAKEN:
5223 asection *dest = NULL;
5225 /* Heuristic: If jumping outside our section, chances are
5226 we are going to need a stub. */
5229 /* If the sym is weak it may be overridden later, so
5230 don't assume we know where a weak sym lives. */
5231 if (h->root.type == bfd_link_hash_defined)
5232 dest = h->root.u.def.section;
5236 Elf_Internal_Sym *isym;
5238 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5243 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5247 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5252 if (h != NULL && ifunc == NULL)
5254 /* We may need a .plt entry if the function this reloc
5255 refers to is in a shared lib. */
5256 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5259 if (h->root.root.string[0] == '.'
5260 && h->root.root.string[1] != '\0')
5261 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5262 if (h == tga || h == dottga)
5263 sec->has_tls_reloc = 1;
5267 case R_PPC64_TPREL64:
5268 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5269 if (!info->executable)
5270 info->flags |= DF_STATIC_TLS;
5273 case R_PPC64_DTPMOD64:
5274 if (rel + 1 < rel_end
5275 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5276 && rel[1].r_offset == rel->r_offset + 8)
5277 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5279 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5282 case R_PPC64_DTPREL64:
5283 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5285 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5286 && rel[-1].r_offset == rel->r_offset - 8)
5287 /* This is the second reloc of a dtpmod, dtprel pair.
5288 Don't mark with TLS_DTPREL. */
5292 sec->has_tls_reloc = 1;
5295 struct ppc_link_hash_entry *eh;
5296 eh = (struct ppc_link_hash_entry *) h;
5297 eh->tls_mask |= tls_type;
5300 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5301 rel->r_addend, tls_type))
5304 ppc64_sec = ppc64_elf_section_data (sec);
5305 if (ppc64_sec->sec_type != sec_toc)
5309 /* One extra to simplify get_tls_mask. */
5310 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5311 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5312 if (ppc64_sec->u.toc.symndx == NULL)
5314 amt = sec->size * sizeof (bfd_vma) / 8;
5315 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5316 if (ppc64_sec->u.toc.add == NULL)
5318 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5319 ppc64_sec->sec_type = sec_toc;
5321 BFD_ASSERT (rel->r_offset % 8 == 0);
5322 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5323 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5325 /* Mark the second slot of a GD or LD entry.
5326 -1 to indicate GD and -2 to indicate LD. */
5327 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5328 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5329 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5330 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5333 case R_PPC64_TPREL16:
5334 case R_PPC64_TPREL16_LO:
5335 case R_PPC64_TPREL16_HI:
5336 case R_PPC64_TPREL16_HA:
5337 case R_PPC64_TPREL16_DS:
5338 case R_PPC64_TPREL16_LO_DS:
5339 case R_PPC64_TPREL16_HIGHER:
5340 case R_PPC64_TPREL16_HIGHERA:
5341 case R_PPC64_TPREL16_HIGHEST:
5342 case R_PPC64_TPREL16_HIGHESTA:
5345 if (!info->executable)
5346 info->flags |= DF_STATIC_TLS;
5351 case R_PPC64_ADDR64:
5352 if (opd_sym_map != NULL
5353 && rel + 1 < rel_end
5354 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5358 if (h->root.root.string[0] == '.'
5359 && h->root.root.string[1] != 0
5360 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5363 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5368 Elf_Internal_Sym *isym;
5370 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5375 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5376 if (s != NULL && s != sec)
5377 opd_sym_map[rel->r_offset / 8] = s;
5385 case R_PPC64_ADDR14:
5386 case R_PPC64_ADDR14_BRNTAKEN:
5387 case R_PPC64_ADDR14_BRTAKEN:
5388 case R_PPC64_ADDR16:
5389 case R_PPC64_ADDR16_DS:
5390 case R_PPC64_ADDR16_HA:
5391 case R_PPC64_ADDR16_HI:
5392 case R_PPC64_ADDR16_HIGHER:
5393 case R_PPC64_ADDR16_HIGHERA:
5394 case R_PPC64_ADDR16_HIGHEST:
5395 case R_PPC64_ADDR16_HIGHESTA:
5396 case R_PPC64_ADDR16_LO:
5397 case R_PPC64_ADDR16_LO_DS:
5398 case R_PPC64_ADDR24:
5399 case R_PPC64_ADDR32:
5400 case R_PPC64_UADDR16:
5401 case R_PPC64_UADDR32:
5402 case R_PPC64_UADDR64:
5404 if (h != NULL && !info->shared)
5405 /* We may need a copy reloc. */
5408 /* Don't propagate .opd relocs. */
5409 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5412 /* If we are creating a shared library, and this is a reloc
5413 against a global symbol, or a non PC relative reloc
5414 against a local symbol, then we need to copy the reloc
5415 into the shared library. However, if we are linking with
5416 -Bsymbolic, we do not need to copy a reloc against a
5417 global symbol which is defined in an object we are
5418 including in the link (i.e., DEF_REGULAR is set). At
5419 this point we have not seen all the input files, so it is
5420 possible that DEF_REGULAR is not set now but will be set
5421 later (it is never cleared). In case of a weak definition,
5422 DEF_REGULAR may be cleared later by a strong definition in
5423 a shared library. We account for that possibility below by
5424 storing information in the dyn_relocs field of the hash
5425 table entry. A similar situation occurs when creating
5426 shared libraries and symbol visibility changes render the
5429 If on the other hand, we are creating an executable, we
5430 may need to keep relocations for symbols satisfied by a
5431 dynamic library if we manage to avoid copy relocs for the
5435 && (must_be_dyn_reloc (info, r_type)
5437 && (! info->symbolic
5438 || h->root.type == bfd_link_hash_defweak
5439 || !h->def_regular))))
5440 || (ELIMINATE_COPY_RELOCS
5443 && (h->root.type == bfd_link_hash_defweak
5444 || !h->def_regular))
5448 struct elf_dyn_relocs *p;
5449 struct elf_dyn_relocs **head;
5451 /* We must copy these reloc types into the output file.
5452 Create a reloc section in dynobj and make room for
5456 sreloc = _bfd_elf_make_dynamic_reloc_section
5457 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5463 /* If this is a global symbol, we count the number of
5464 relocations we need for this symbol. */
5467 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5471 /* Track dynamic relocs needed for local syms too.
5472 We really need local syms available to do this
5476 Elf_Internal_Sym *isym;
5478 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5483 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5487 vpp = &elf_section_data (s)->local_dynrel;
5488 head = (struct elf_dyn_relocs **) vpp;
5492 if (p == NULL || p->sec != sec)
5494 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5505 if (!must_be_dyn_reloc (info, r_type))
5518 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5519 of the code entry point, and its section. */
5522 opd_entry_value (asection *opd_sec,
5524 asection **code_sec,
5527 bfd *opd_bfd = opd_sec->owner;
5528 Elf_Internal_Rela *relocs;
5529 Elf_Internal_Rela *lo, *hi, *look;
5532 /* No relocs implies we are linking a --just-symbols object, or looking
5533 at a final linked executable with addr2line or somesuch. */
5534 if (opd_sec->reloc_count == 0)
5538 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5539 return (bfd_vma) -1;
5541 val = bfd_get_64 (opd_bfd, buf);
5542 if (code_sec != NULL)
5544 asection *sec, *likely = NULL;
5545 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5547 && (sec->flags & SEC_LOAD) != 0
5548 && (sec->flags & SEC_ALLOC) != 0)
5553 if (code_off != NULL)
5554 *code_off = val - likely->vma;
5560 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5562 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5564 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5566 /* Go find the opd reloc at the sym address. */
5568 BFD_ASSERT (lo != NULL);
5569 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5573 look = lo + (hi - lo) / 2;
5574 if (look->r_offset < offset)
5576 else if (look->r_offset > offset)
5580 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5582 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5583 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5585 unsigned long symndx = ELF64_R_SYM (look->r_info);
5588 if (symndx < symtab_hdr->sh_info)
5590 Elf_Internal_Sym *sym;
5592 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5595 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5596 symtab_hdr->sh_info,
5597 0, NULL, NULL, NULL);
5600 symtab_hdr->contents = (bfd_byte *) sym;
5604 val = sym->st_value;
5605 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5606 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5610 struct elf_link_hash_entry **sym_hashes;
5611 struct elf_link_hash_entry *rh;
5613 sym_hashes = elf_sym_hashes (opd_bfd);
5614 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5615 rh = elf_follow_link (rh);
5616 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5617 || rh->root.type == bfd_link_hash_defweak);
5618 val = rh->root.u.def.value;
5619 sec = rh->root.u.def.section;
5621 val += look->r_addend;
5622 if (code_off != NULL)
5624 if (code_sec != NULL)
5626 if (sec != NULL && sec->output_section != NULL)
5627 val += sec->output_section->vma + sec->output_offset;
5636 /* Return TRUE iff the ELF symbol SYM might be a function. Set *CODE_SEC
5637 and *CODE_OFF to the function's entry point. */
5640 ppc64_elf_maybe_function_sym (const elf_symbol_type *sym,
5641 asection **code_sec, bfd_vma *code_off)
5643 if (_bfd_elf_maybe_function_sym (sym, code_sec, code_off))
5645 if (strcmp (sym->symbol.section->name, ".opd") == 0)
5646 opd_entry_value (sym->symbol.section, sym->symbol.value,
5647 code_sec, code_off);
5653 /* Return true if symbol is defined in a regular object file. */
5656 is_static_defined (struct elf_link_hash_entry *h)
5658 return ((h->root.type == bfd_link_hash_defined
5659 || h->root.type == bfd_link_hash_defweak)
5660 && h->root.u.def.section != NULL
5661 && h->root.u.def.section->output_section != NULL);
5664 /* If FDH is a function descriptor symbol, return the associated code
5665 entry symbol if it is defined. Return NULL otherwise. */
5667 static struct ppc_link_hash_entry *
5668 defined_code_entry (struct ppc_link_hash_entry *fdh)
5670 if (fdh->is_func_descriptor)
5672 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5673 if (fh->elf.root.type == bfd_link_hash_defined
5674 || fh->elf.root.type == bfd_link_hash_defweak)
5680 /* If FH is a function code entry symbol, return the associated
5681 function descriptor symbol if it is defined. Return NULL otherwise. */
5683 static struct ppc_link_hash_entry *
5684 defined_func_desc (struct ppc_link_hash_entry *fh)
5687 && fh->oh->is_func_descriptor)
5689 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5690 if (fdh->elf.root.type == bfd_link_hash_defined
5691 || fdh->elf.root.type == bfd_link_hash_defweak)
5697 /* Mark all our entry sym sections, both opd and code section. */
5700 ppc64_elf_gc_keep (struct bfd_link_info *info)
5702 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5703 struct bfd_sym_chain *sym;
5708 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5710 struct ppc_link_hash_entry *eh, *fh;
5713 eh = (struct ppc_link_hash_entry *)
5714 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5717 if (eh->elf.root.type != bfd_link_hash_defined
5718 && eh->elf.root.type != bfd_link_hash_defweak)
5721 fh = defined_code_entry (eh);
5724 sec = fh->elf.root.u.def.section;
5725 sec->flags |= SEC_KEEP;
5727 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5728 && opd_entry_value (eh->elf.root.u.def.section,
5729 eh->elf.root.u.def.value,
5730 &sec, NULL) != (bfd_vma) -1)
5731 sec->flags |= SEC_KEEP;
5733 sec = eh->elf.root.u.def.section;
5734 sec->flags |= SEC_KEEP;
5738 /* Mark sections containing dynamically referenced symbols. When
5739 building shared libraries, we must assume that any visible symbol is
5743 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5745 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5746 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5747 struct ppc_link_hash_entry *fdh;
5749 /* Dynamic linking info is on the func descriptor sym. */
5750 fdh = defined_func_desc (eh);
5754 if ((eh->elf.root.type == bfd_link_hash_defined
5755 || eh->elf.root.type == bfd_link_hash_defweak)
5756 && (eh->elf.ref_dynamic
5757 || (!info->executable
5758 && eh->elf.def_regular
5759 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5760 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
5761 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
5762 || !bfd_hide_sym_by_version (info->version_info,
5763 eh->elf.root.root.string)))))
5766 struct ppc_link_hash_entry *fh;
5768 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5770 /* Function descriptor syms cause the associated
5771 function code sym section to be marked. */
5772 fh = defined_code_entry (eh);
5775 code_sec = fh->elf.root.u.def.section;
5776 code_sec->flags |= SEC_KEEP;
5778 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5779 && opd_entry_value (eh->elf.root.u.def.section,
5780 eh->elf.root.u.def.value,
5781 &code_sec, NULL) != (bfd_vma) -1)
5782 code_sec->flags |= SEC_KEEP;
5788 /* Return the section that should be marked against GC for a given
5792 ppc64_elf_gc_mark_hook (asection *sec,
5793 struct bfd_link_info *info,
5794 Elf_Internal_Rela *rel,
5795 struct elf_link_hash_entry *h,
5796 Elf_Internal_Sym *sym)
5800 /* Syms return NULL if we're marking .opd, so we avoid marking all
5801 function sections, as all functions are referenced in .opd. */
5803 if (get_opd_info (sec) != NULL)
5808 enum elf_ppc64_reloc_type r_type;
5809 struct ppc_link_hash_entry *eh, *fh, *fdh;
5811 r_type = ELF64_R_TYPE (rel->r_info);
5814 case R_PPC64_GNU_VTINHERIT:
5815 case R_PPC64_GNU_VTENTRY:
5819 switch (h->root.type)
5821 case bfd_link_hash_defined:
5822 case bfd_link_hash_defweak:
5823 eh = (struct ppc_link_hash_entry *) h;
5824 fdh = defined_func_desc (eh);
5828 /* Function descriptor syms cause the associated
5829 function code sym section to be marked. */
5830 fh = defined_code_entry (eh);
5833 /* They also mark their opd section. */
5834 eh->elf.root.u.def.section->gc_mark = 1;
5836 rsec = fh->elf.root.u.def.section;
5838 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5839 && opd_entry_value (eh->elf.root.u.def.section,
5840 eh->elf.root.u.def.value,
5841 &rsec, NULL) != (bfd_vma) -1)
5842 eh->elf.root.u.def.section->gc_mark = 1;
5844 rsec = h->root.u.def.section;
5847 case bfd_link_hash_common:
5848 rsec = h->root.u.c.p->section;
5852 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5858 struct _opd_sec_data *opd;
5860 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5861 opd = get_opd_info (rsec);
5862 if (opd != NULL && opd->func_sec != NULL)
5866 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5873 /* Update the .got, .plt. and dynamic reloc reference counts for the
5874 section being removed. */
5877 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5878 asection *sec, const Elf_Internal_Rela *relocs)
5880 struct ppc_link_hash_table *htab;
5881 Elf_Internal_Shdr *symtab_hdr;
5882 struct elf_link_hash_entry **sym_hashes;
5883 struct got_entry **local_got_ents;
5884 const Elf_Internal_Rela *rel, *relend;
5886 if (info->relocatable)
5889 if ((sec->flags & SEC_ALLOC) == 0)
5892 elf_section_data (sec)->local_dynrel = NULL;
5894 htab = ppc_hash_table (info);
5898 symtab_hdr = &elf_symtab_hdr (abfd);
5899 sym_hashes = elf_sym_hashes (abfd);
5900 local_got_ents = elf_local_got_ents (abfd);
5902 relend = relocs + sec->reloc_count;
5903 for (rel = relocs; rel < relend; rel++)
5905 unsigned long r_symndx;
5906 enum elf_ppc64_reloc_type r_type;
5907 struct elf_link_hash_entry *h = NULL;
5908 unsigned char tls_type = 0;
5910 r_symndx = ELF64_R_SYM (rel->r_info);
5911 r_type = ELF64_R_TYPE (rel->r_info);
5912 if (r_symndx >= symtab_hdr->sh_info)
5914 struct ppc_link_hash_entry *eh;
5915 struct elf_dyn_relocs **pp;
5916 struct elf_dyn_relocs *p;
5918 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5919 h = elf_follow_link (h);
5920 eh = (struct ppc_link_hash_entry *) h;
5922 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5925 /* Everything must go for SEC. */
5931 if (is_branch_reloc (r_type))
5933 struct plt_entry **ifunc = NULL;
5936 if (h->type == STT_GNU_IFUNC)
5937 ifunc = &h->plt.plist;
5939 else if (local_got_ents != NULL)
5941 struct plt_entry **local_plt = (struct plt_entry **)
5942 (local_got_ents + symtab_hdr->sh_info);
5943 unsigned char *local_got_tls_masks = (unsigned char *)
5944 (local_plt + symtab_hdr->sh_info);
5945 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5946 ifunc = local_plt + r_symndx;
5950 struct plt_entry *ent;
5952 for (ent = *ifunc; ent != NULL; ent = ent->next)
5953 if (ent->addend == rel->r_addend)
5957 if (ent->plt.refcount > 0)
5958 ent->plt.refcount -= 1;
5965 case R_PPC64_GOT_TLSLD16:
5966 case R_PPC64_GOT_TLSLD16_LO:
5967 case R_PPC64_GOT_TLSLD16_HI:
5968 case R_PPC64_GOT_TLSLD16_HA:
5969 tls_type = TLS_TLS | TLS_LD;
5972 case R_PPC64_GOT_TLSGD16:
5973 case R_PPC64_GOT_TLSGD16_LO:
5974 case R_PPC64_GOT_TLSGD16_HI:
5975 case R_PPC64_GOT_TLSGD16_HA:
5976 tls_type = TLS_TLS | TLS_GD;
5979 case R_PPC64_GOT_TPREL16_DS:
5980 case R_PPC64_GOT_TPREL16_LO_DS:
5981 case R_PPC64_GOT_TPREL16_HI:
5982 case R_PPC64_GOT_TPREL16_HA:
5983 tls_type = TLS_TLS | TLS_TPREL;
5986 case R_PPC64_GOT_DTPREL16_DS:
5987 case R_PPC64_GOT_DTPREL16_LO_DS:
5988 case R_PPC64_GOT_DTPREL16_HI:
5989 case R_PPC64_GOT_DTPREL16_HA:
5990 tls_type = TLS_TLS | TLS_DTPREL;
5994 case R_PPC64_GOT16_DS:
5995 case R_PPC64_GOT16_HA:
5996 case R_PPC64_GOT16_HI:
5997 case R_PPC64_GOT16_LO:
5998 case R_PPC64_GOT16_LO_DS:
6001 struct got_entry *ent;
6006 ent = local_got_ents[r_symndx];
6008 for (; ent != NULL; ent = ent->next)
6009 if (ent->addend == rel->r_addend
6010 && ent->owner == abfd
6011 && ent->tls_type == tls_type)
6015 if (ent->got.refcount > 0)
6016 ent->got.refcount -= 1;
6020 case R_PPC64_PLT16_HA:
6021 case R_PPC64_PLT16_HI:
6022 case R_PPC64_PLT16_LO:
6026 case R_PPC64_REL14_BRNTAKEN:
6027 case R_PPC64_REL14_BRTAKEN:
6031 struct plt_entry *ent;
6033 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6034 if (ent->addend == rel->r_addend)
6036 if (ent != NULL && ent->plt.refcount > 0)
6037 ent->plt.refcount -= 1;
6048 /* The maximum size of .sfpr. */
6049 #define SFPR_MAX (218*4)
6051 struct sfpr_def_parms
6053 const char name[12];
6054 unsigned char lo, hi;
6055 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6056 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6059 /* Auto-generate _save*, _rest* functions in .sfpr. */
6062 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6064 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6066 size_t len = strlen (parm->name);
6067 bfd_boolean writing = FALSE;
6073 memcpy (sym, parm->name, len);
6076 for (i = parm->lo; i <= parm->hi; i++)
6078 struct elf_link_hash_entry *h;
6080 sym[len + 0] = i / 10 + '0';
6081 sym[len + 1] = i % 10 + '0';
6082 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6086 h->root.type = bfd_link_hash_defined;
6087 h->root.u.def.section = htab->sfpr;
6088 h->root.u.def.value = htab->sfpr->size;
6091 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6093 if (htab->sfpr->contents == NULL)
6095 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6096 if (htab->sfpr->contents == NULL)
6102 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6104 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6106 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6107 htab->sfpr->size = p - htab->sfpr->contents;
6115 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6117 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6122 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6124 p = savegpr0 (abfd, p, r);
6125 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6127 bfd_put_32 (abfd, BLR, p);
6132 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6134 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6139 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6141 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6143 p = restgpr0 (abfd, p, r);
6144 bfd_put_32 (abfd, MTLR_R0, p);
6148 p = restgpr0 (abfd, p, 30);
6149 p = restgpr0 (abfd, p, 31);
6151 bfd_put_32 (abfd, BLR, p);
6156 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6158 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6163 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6165 p = savegpr1 (abfd, p, r);
6166 bfd_put_32 (abfd, BLR, p);
6171 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6173 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6178 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6180 p = restgpr1 (abfd, p, r);
6181 bfd_put_32 (abfd, BLR, p);
6186 savefpr (bfd *abfd, bfd_byte *p, int r)
6188 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6193 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6195 p = savefpr (abfd, p, r);
6196 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6198 bfd_put_32 (abfd, BLR, p);
6203 restfpr (bfd *abfd, bfd_byte *p, int r)
6205 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6210 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6212 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6214 p = restfpr (abfd, p, r);
6215 bfd_put_32 (abfd, MTLR_R0, p);
6219 p = restfpr (abfd, p, 30);
6220 p = restfpr (abfd, p, 31);
6222 bfd_put_32 (abfd, BLR, p);
6227 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6229 p = savefpr (abfd, p, r);
6230 bfd_put_32 (abfd, BLR, p);
6235 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6237 p = restfpr (abfd, p, r);
6238 bfd_put_32 (abfd, BLR, p);
6243 savevr (bfd *abfd, bfd_byte *p, int r)
6245 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6247 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6252 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6254 p = savevr (abfd, p, r);
6255 bfd_put_32 (abfd, BLR, p);
6260 restvr (bfd *abfd, bfd_byte *p, int r)
6262 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6264 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6269 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6271 p = restvr (abfd, p, r);
6272 bfd_put_32 (abfd, BLR, p);
6276 /* Called via elf_link_hash_traverse to transfer dynamic linking
6277 information on function code symbol entries to their corresponding
6278 function descriptor symbol entries. */
6281 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6283 struct bfd_link_info *info;
6284 struct ppc_link_hash_table *htab;
6285 struct plt_entry *ent;
6286 struct ppc_link_hash_entry *fh;
6287 struct ppc_link_hash_entry *fdh;
6288 bfd_boolean force_local;
6290 fh = (struct ppc_link_hash_entry *) h;
6291 if (fh->elf.root.type == bfd_link_hash_indirect)
6295 htab = ppc_hash_table (info);
6299 /* Resolve undefined references to dot-symbols as the value
6300 in the function descriptor, if we have one in a regular object.
6301 This is to satisfy cases like ".quad .foo". Calls to functions
6302 in dynamic objects are handled elsewhere. */
6303 if (fh->elf.root.type == bfd_link_hash_undefweak
6304 && fh->was_undefined
6305 && (fdh = defined_func_desc (fh)) != NULL
6306 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6307 && opd_entry_value (fdh->elf.root.u.def.section,
6308 fdh->elf.root.u.def.value,
6309 &fh->elf.root.u.def.section,
6310 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6312 fh->elf.root.type = fdh->elf.root.type;
6313 fh->elf.forced_local = 1;
6314 fh->elf.def_regular = fdh->elf.def_regular;
6315 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6318 /* If this is a function code symbol, transfer dynamic linking
6319 information to the function descriptor symbol. */
6323 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6324 if (ent->plt.refcount > 0)
6327 || fh->elf.root.root.string[0] != '.'
6328 || fh->elf.root.root.string[1] == '\0')
6331 /* Find the corresponding function descriptor symbol. Create it
6332 as undefined if necessary. */
6334 fdh = lookup_fdh (fh, htab);
6336 && !info->executable
6337 && (fh->elf.root.type == bfd_link_hash_undefined
6338 || fh->elf.root.type == bfd_link_hash_undefweak))
6340 fdh = make_fdh (info, fh);
6345 /* Fake function descriptors are made undefweak. If the function
6346 code symbol is strong undefined, make the fake sym the same.
6347 If the function code symbol is defined, then force the fake
6348 descriptor local; We can't support overriding of symbols in a
6349 shared library on a fake descriptor. */
6353 && fdh->elf.root.type == bfd_link_hash_undefweak)
6355 if (fh->elf.root.type == bfd_link_hash_undefined)
6357 fdh->elf.root.type = bfd_link_hash_undefined;
6358 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6360 else if (fh->elf.root.type == bfd_link_hash_defined
6361 || fh->elf.root.type == bfd_link_hash_defweak)
6363 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6368 && !fdh->elf.forced_local
6369 && (!info->executable
6370 || fdh->elf.def_dynamic
6371 || fdh->elf.ref_dynamic
6372 || (fdh->elf.root.type == bfd_link_hash_undefweak
6373 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6375 if (fdh->elf.dynindx == -1)
6376 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6378 fdh->elf.ref_regular |= fh->elf.ref_regular;
6379 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6380 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6381 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6382 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6384 move_plt_plist (fh, fdh);
6385 fdh->elf.needs_plt = 1;
6387 fdh->is_func_descriptor = 1;
6392 /* Now that the info is on the function descriptor, clear the
6393 function code sym info. Any function code syms for which we
6394 don't have a definition in a regular file, we force local.
6395 This prevents a shared library from exporting syms that have
6396 been imported from another library. Function code syms that
6397 are really in the library we must leave global to prevent the
6398 linker dragging in a definition from a static library. */
6399 force_local = (!fh->elf.def_regular
6401 || !fdh->elf.def_regular
6402 || fdh->elf.forced_local);
6403 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6408 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6409 this hook to a) provide some gcc support functions, and b) transfer
6410 dynamic linking information gathered so far on function code symbol
6411 entries, to their corresponding function descriptor symbol entries. */
6414 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6415 struct bfd_link_info *info)
6417 struct ppc_link_hash_table *htab;
6419 const struct sfpr_def_parms funcs[] =
6421 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6422 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6423 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6424 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6425 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6426 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6427 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6428 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6429 { "._savef", 14, 31, savefpr, savefpr1_tail },
6430 { "._restf", 14, 31, restfpr, restfpr1_tail },
6431 { "_savevr_", 20, 31, savevr, savevr_tail },
6432 { "_restvr_", 20, 31, restvr, restvr_tail }
6435 htab = ppc_hash_table (info);
6439 if (htab->sfpr == NULL)
6440 /* We don't have any relocs. */
6443 /* Provide any missing _save* and _rest* functions. */
6444 htab->sfpr->size = 0;
6445 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6446 if (!sfpr_define (info, &funcs[i]))
6449 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6451 if (htab->sfpr->size == 0)
6452 htab->sfpr->flags |= SEC_EXCLUDE;
6457 /* Adjust a symbol defined by a dynamic object and referenced by a
6458 regular object. The current definition is in some section of the
6459 dynamic object, but we're not including those sections. We have to
6460 change the definition to something the rest of the link can
6464 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6465 struct elf_link_hash_entry *h)
6467 struct ppc_link_hash_table *htab;
6470 htab = ppc_hash_table (info);
6474 /* Deal with function syms. */
6475 if (h->type == STT_FUNC
6476 || h->type == STT_GNU_IFUNC
6479 /* Clear procedure linkage table information for any symbol that
6480 won't need a .plt entry. */
6481 struct plt_entry *ent;
6482 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6483 if (ent->plt.refcount > 0)
6486 || (h->type != STT_GNU_IFUNC
6487 && (SYMBOL_CALLS_LOCAL (info, h)
6488 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6489 && h->root.type == bfd_link_hash_undefweak))))
6491 h->plt.plist = NULL;
6496 h->plt.plist = NULL;
6498 /* If this is a weak symbol, and there is a real definition, the
6499 processor independent code will have arranged for us to see the
6500 real definition first, and we can just use the same value. */
6501 if (h->u.weakdef != NULL)
6503 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6504 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6505 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6506 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6507 if (ELIMINATE_COPY_RELOCS)
6508 h->non_got_ref = h->u.weakdef->non_got_ref;
6512 /* If we are creating a shared library, we must presume that the
6513 only references to the symbol are via the global offset table.
6514 For such cases we need not do anything here; the relocations will
6515 be handled correctly by relocate_section. */
6519 /* If there are no references to this symbol that do not use the
6520 GOT, we don't need to generate a copy reloc. */
6521 if (!h->non_got_ref)
6524 /* Don't generate a copy reloc for symbols defined in the executable. */
6525 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6528 if (ELIMINATE_COPY_RELOCS)
6530 struct ppc_link_hash_entry * eh;
6531 struct elf_dyn_relocs *p;
6533 eh = (struct ppc_link_hash_entry *) h;
6534 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6536 s = p->sec->output_section;
6537 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6541 /* If we didn't find any dynamic relocs in read-only sections, then
6542 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6550 if (h->plt.plist != NULL)
6552 /* We should never get here, but unfortunately there are versions
6553 of gcc out there that improperly (for this ABI) put initialized
6554 function pointers, vtable refs and suchlike in read-only
6555 sections. Allow them to proceed, but warn that this might
6556 break at runtime. */
6557 info->callbacks->einfo
6558 (_("%P: copy reloc against `%s' requires lazy plt linking; "
6559 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6560 h->root.root.string);
6563 /* This is a reference to a symbol defined by a dynamic object which
6564 is not a function. */
6568 info->callbacks->einfo (_("%P: dynamic variable `%s' is zero size\n"),
6569 h->root.root.string);
6573 /* We must allocate the symbol in our .dynbss section, which will
6574 become part of the .bss section of the executable. There will be
6575 an entry for this symbol in the .dynsym section. The dynamic
6576 object will contain position independent code, so all references
6577 from the dynamic object to this symbol will go through the global
6578 offset table. The dynamic linker will use the .dynsym entry to
6579 determine the address it must put in the global offset table, so
6580 both the dynamic object and the regular object will refer to the
6581 same memory location for the variable. */
6583 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6584 to copy the initial value out of the dynamic object and into the
6585 runtime process image. We need to remember the offset into the
6586 .rela.bss section we are going to use. */
6587 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6589 htab->relbss->size += sizeof (Elf64_External_Rela);
6595 return _bfd_elf_adjust_dynamic_copy (h, s);
6598 /* If given a function descriptor symbol, hide both the function code
6599 sym and the descriptor. */
6601 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6602 struct elf_link_hash_entry *h,
6603 bfd_boolean force_local)
6605 struct ppc_link_hash_entry *eh;
6606 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6608 eh = (struct ppc_link_hash_entry *) h;
6609 if (eh->is_func_descriptor)
6611 struct ppc_link_hash_entry *fh = eh->oh;
6616 struct ppc_link_hash_table *htab;
6619 /* We aren't supposed to use alloca in BFD because on
6620 systems which do not have alloca the version in libiberty
6621 calls xmalloc, which might cause the program to crash
6622 when it runs out of memory. This function doesn't have a
6623 return status, so there's no way to gracefully return an
6624 error. So cheat. We know that string[-1] can be safely
6625 accessed; It's either a string in an ELF string table,
6626 or allocated in an objalloc structure. */
6628 p = eh->elf.root.root.string - 1;
6631 htab = ppc_hash_table (info);
6635 fh = (struct ppc_link_hash_entry *)
6636 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6639 /* Unfortunately, if it so happens that the string we were
6640 looking for was allocated immediately before this string,
6641 then we overwrote the string terminator. That's the only
6642 reason the lookup should fail. */
6645 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6646 while (q >= eh->elf.root.root.string && *q == *p)
6648 if (q < eh->elf.root.root.string && *p == '.')
6649 fh = (struct ppc_link_hash_entry *)
6650 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6659 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6664 get_sym_h (struct elf_link_hash_entry **hp,
6665 Elf_Internal_Sym **symp,
6667 unsigned char **tls_maskp,
6668 Elf_Internal_Sym **locsymsp,
6669 unsigned long r_symndx,
6672 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6674 if (r_symndx >= symtab_hdr->sh_info)
6676 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6677 struct elf_link_hash_entry *h;
6679 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6680 h = elf_follow_link (h);
6688 if (symsecp != NULL)
6690 asection *symsec = NULL;
6691 if (h->root.type == bfd_link_hash_defined
6692 || h->root.type == bfd_link_hash_defweak)
6693 symsec = h->root.u.def.section;
6697 if (tls_maskp != NULL)
6699 struct ppc_link_hash_entry *eh;
6701 eh = (struct ppc_link_hash_entry *) h;
6702 *tls_maskp = &eh->tls_mask;
6707 Elf_Internal_Sym *sym;
6708 Elf_Internal_Sym *locsyms = *locsymsp;
6710 if (locsyms == NULL)
6712 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6713 if (locsyms == NULL)
6714 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6715 symtab_hdr->sh_info,
6716 0, NULL, NULL, NULL);
6717 if (locsyms == NULL)
6719 *locsymsp = locsyms;
6721 sym = locsyms + r_symndx;
6729 if (symsecp != NULL)
6730 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6732 if (tls_maskp != NULL)
6734 struct got_entry **lgot_ents;
6735 unsigned char *tls_mask;
6738 lgot_ents = elf_local_got_ents (ibfd);
6739 if (lgot_ents != NULL)
6741 struct plt_entry **local_plt = (struct plt_entry **)
6742 (lgot_ents + symtab_hdr->sh_info);
6743 unsigned char *lgot_masks = (unsigned char *)
6744 (local_plt + symtab_hdr->sh_info);
6745 tls_mask = &lgot_masks[r_symndx];
6747 *tls_maskp = tls_mask;
6753 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6754 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6755 type suitable for optimization, and 1 otherwise. */
6758 get_tls_mask (unsigned char **tls_maskp,
6759 unsigned long *toc_symndx,
6760 bfd_vma *toc_addend,
6761 Elf_Internal_Sym **locsymsp,
6762 const Elf_Internal_Rela *rel,
6765 unsigned long r_symndx;
6767 struct elf_link_hash_entry *h;
6768 Elf_Internal_Sym *sym;
6772 r_symndx = ELF64_R_SYM (rel->r_info);
6773 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6776 if ((*tls_maskp != NULL && **tls_maskp != 0)
6778 || ppc64_elf_section_data (sec) == NULL
6779 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6782 /* Look inside a TOC section too. */
6785 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6786 off = h->root.u.def.value;
6789 off = sym->st_value;
6790 off += rel->r_addend;
6791 BFD_ASSERT (off % 8 == 0);
6792 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6793 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6794 if (toc_symndx != NULL)
6795 *toc_symndx = r_symndx;
6796 if (toc_addend != NULL)
6797 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6798 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6800 if ((h == NULL || is_static_defined (h))
6801 && (next_r == -1 || next_r == -2))
6806 /* Find (or create) an entry in the tocsave hash table. */
6808 static struct tocsave_entry *
6809 tocsave_find (struct ppc_link_hash_table *htab,
6810 enum insert_option insert,
6811 Elf_Internal_Sym **local_syms,
6812 const Elf_Internal_Rela *irela,
6815 unsigned long r_indx;
6816 struct elf_link_hash_entry *h;
6817 Elf_Internal_Sym *sym;
6818 struct tocsave_entry ent, *p;
6820 struct tocsave_entry **slot;
6822 r_indx = ELF64_R_SYM (irela->r_info);
6823 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
6825 if (ent.sec == NULL || ent.sec->output_section == NULL)
6827 (*_bfd_error_handler)
6828 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6833 ent.offset = h->root.u.def.value;
6835 ent.offset = sym->st_value;
6836 ent.offset += irela->r_addend;
6838 hash = tocsave_htab_hash (&ent);
6839 slot = ((struct tocsave_entry **)
6840 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
6846 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
6855 /* Adjust all global syms defined in opd sections. In gcc generated
6856 code for the old ABI, these will already have been done. */
6859 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6861 struct ppc_link_hash_entry *eh;
6863 struct _opd_sec_data *opd;
6865 if (h->root.type == bfd_link_hash_indirect)
6868 if (h->root.type != bfd_link_hash_defined
6869 && h->root.type != bfd_link_hash_defweak)
6872 eh = (struct ppc_link_hash_entry *) h;
6873 if (eh->adjust_done)
6876 sym_sec = eh->elf.root.u.def.section;
6877 opd = get_opd_info (sym_sec);
6878 if (opd != NULL && opd->adjust != NULL)
6880 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6883 /* This entry has been deleted. */
6884 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6887 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6888 if (elf_discarded_section (dsec))
6890 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6894 eh->elf.root.u.def.value = 0;
6895 eh->elf.root.u.def.section = dsec;
6898 eh->elf.root.u.def.value += adjust;
6899 eh->adjust_done = 1;
6904 /* Handles decrementing dynamic reloc counts for the reloc specified by
6905 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6906 have already been determined. */
6909 dec_dynrel_count (bfd_vma r_info,
6911 struct bfd_link_info *info,
6912 Elf_Internal_Sym **local_syms,
6913 struct elf_link_hash_entry *h,
6916 enum elf_ppc64_reloc_type r_type;
6917 struct elf_dyn_relocs *p;
6918 struct elf_dyn_relocs **pp;
6920 /* Can this reloc be dynamic? This switch, and later tests here
6921 should be kept in sync with the code in check_relocs. */
6922 r_type = ELF64_R_TYPE (r_info);
6928 case R_PPC64_TPREL16:
6929 case R_PPC64_TPREL16_LO:
6930 case R_PPC64_TPREL16_HI:
6931 case R_PPC64_TPREL16_HA:
6932 case R_PPC64_TPREL16_DS:
6933 case R_PPC64_TPREL16_LO_DS:
6934 case R_PPC64_TPREL16_HIGHER:
6935 case R_PPC64_TPREL16_HIGHERA:
6936 case R_PPC64_TPREL16_HIGHEST:
6937 case R_PPC64_TPREL16_HIGHESTA:
6941 case R_PPC64_TPREL64:
6942 case R_PPC64_DTPMOD64:
6943 case R_PPC64_DTPREL64:
6944 case R_PPC64_ADDR64:
6948 case R_PPC64_ADDR14:
6949 case R_PPC64_ADDR14_BRNTAKEN:
6950 case R_PPC64_ADDR14_BRTAKEN:
6951 case R_PPC64_ADDR16:
6952 case R_PPC64_ADDR16_DS:
6953 case R_PPC64_ADDR16_HA:
6954 case R_PPC64_ADDR16_HI:
6955 case R_PPC64_ADDR16_HIGHER:
6956 case R_PPC64_ADDR16_HIGHERA:
6957 case R_PPC64_ADDR16_HIGHEST:
6958 case R_PPC64_ADDR16_HIGHESTA:
6959 case R_PPC64_ADDR16_LO:
6960 case R_PPC64_ADDR16_LO_DS:
6961 case R_PPC64_ADDR24:
6962 case R_PPC64_ADDR32:
6963 case R_PPC64_UADDR16:
6964 case R_PPC64_UADDR32:
6965 case R_PPC64_UADDR64:
6970 if (local_syms != NULL)
6972 unsigned long r_symndx;
6973 Elf_Internal_Sym *sym;
6974 bfd *ibfd = sec->owner;
6976 r_symndx = ELF64_R_SYM (r_info);
6977 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6982 && (must_be_dyn_reloc (info, r_type)
6985 || h->root.type == bfd_link_hash_defweak
6986 || !h->def_regular))))
6987 || (ELIMINATE_COPY_RELOCS
6990 && (h->root.type == bfd_link_hash_defweak
6991 || !h->def_regular)))
6997 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7000 if (sym_sec != NULL)
7002 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
7003 pp = (struct elf_dyn_relocs **) vpp;
7007 void *vpp = &elf_section_data (sec)->local_dynrel;
7008 pp = (struct elf_dyn_relocs **) vpp;
7011 /* elf_gc_sweep may have already removed all dyn relocs associated
7012 with local syms for a given section. Don't report a dynreloc
7018 while ((p = *pp) != NULL)
7022 if (!must_be_dyn_reloc (info, r_type))
7032 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7034 bfd_set_error (bfd_error_bad_value);
7038 /* Remove unused Official Procedure Descriptor entries. Currently we
7039 only remove those associated with functions in discarded link-once
7040 sections, or weakly defined functions that have been overridden. It
7041 would be possible to remove many more entries for statically linked
7045 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7048 bfd_boolean some_edited = FALSE;
7049 asection *need_pad = NULL;
7051 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7054 Elf_Internal_Rela *relstart, *rel, *relend;
7055 Elf_Internal_Shdr *symtab_hdr;
7056 Elf_Internal_Sym *local_syms;
7058 struct _opd_sec_data *opd;
7059 bfd_boolean need_edit, add_aux_fields;
7060 bfd_size_type cnt_16b = 0;
7062 if (!is_ppc64_elf (ibfd))
7065 sec = bfd_get_section_by_name (ibfd, ".opd");
7066 if (sec == NULL || sec->size == 0)
7069 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
7072 if (sec->output_section == bfd_abs_section_ptr)
7075 /* Look through the section relocs. */
7076 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7080 symtab_hdr = &elf_symtab_hdr (ibfd);
7082 /* Read the relocations. */
7083 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7085 if (relstart == NULL)
7088 /* First run through the relocs to check they are sane, and to
7089 determine whether we need to edit this opd section. */
7093 relend = relstart + sec->reloc_count;
7094 for (rel = relstart; rel < relend; )
7096 enum elf_ppc64_reloc_type r_type;
7097 unsigned long r_symndx;
7099 struct elf_link_hash_entry *h;
7100 Elf_Internal_Sym *sym;
7102 /* .opd contains a regular array of 16 or 24 byte entries. We're
7103 only interested in the reloc pointing to a function entry
7105 if (rel->r_offset != offset
7106 || rel + 1 >= relend
7107 || (rel + 1)->r_offset != offset + 8)
7109 /* If someone messes with .opd alignment then after a
7110 "ld -r" we might have padding in the middle of .opd.
7111 Also, there's nothing to prevent someone putting
7112 something silly in .opd with the assembler. No .opd
7113 optimization for them! */
7115 (*_bfd_error_handler)
7116 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7121 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7122 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7124 (*_bfd_error_handler)
7125 (_("%B: unexpected reloc type %u in .opd section"),
7131 r_symndx = ELF64_R_SYM (rel->r_info);
7132 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7136 if (sym_sec == NULL || sym_sec->owner == NULL)
7138 const char *sym_name;
7140 sym_name = h->root.root.string;
7142 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7145 (*_bfd_error_handler)
7146 (_("%B: undefined sym `%s' in .opd section"),
7152 /* opd entries are always for functions defined in the
7153 current input bfd. If the symbol isn't defined in the
7154 input bfd, then we won't be using the function in this
7155 bfd; It must be defined in a linkonce section in another
7156 bfd, or is weak. It's also possible that we are
7157 discarding the function due to a linker script /DISCARD/,
7158 which we test for via the output_section. */
7159 if (sym_sec->owner != ibfd
7160 || sym_sec->output_section == bfd_abs_section_ptr)
7165 || (rel + 1 == relend && rel->r_offset == offset + 16))
7167 if (sec->size == offset + 24)
7172 if (rel == relend && sec->size == offset + 16)
7180 if (rel->r_offset == offset + 24)
7182 else if (rel->r_offset != offset + 16)
7184 else if (rel + 1 < relend
7185 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7186 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7191 else if (rel + 2 < relend
7192 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7193 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7202 add_aux_fields = non_overlapping && cnt_16b > 0;
7204 if (need_edit || add_aux_fields)
7206 Elf_Internal_Rela *write_rel;
7207 Elf_Internal_Shdr *rel_hdr;
7208 bfd_byte *rptr, *wptr;
7209 bfd_byte *new_contents;
7214 new_contents = NULL;
7215 amt = sec->size * sizeof (long) / 8;
7216 opd = &ppc64_elf_section_data (sec)->u.opd;
7217 opd->adjust = bfd_zalloc (sec->owner, amt);
7218 if (opd->adjust == NULL)
7220 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7222 /* This seems a waste of time as input .opd sections are all
7223 zeros as generated by gcc, but I suppose there's no reason
7224 this will always be so. We might start putting something in
7225 the third word of .opd entries. */
7226 if ((sec->flags & SEC_IN_MEMORY) == 0)
7229 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7234 if (local_syms != NULL
7235 && symtab_hdr->contents != (unsigned char *) local_syms)
7237 if (elf_section_data (sec)->relocs != relstart)
7241 sec->contents = loc;
7242 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7245 elf_section_data (sec)->relocs = relstart;
7247 new_contents = sec->contents;
7250 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7251 if (new_contents == NULL)
7255 wptr = new_contents;
7256 rptr = sec->contents;
7258 write_rel = relstart;
7262 for (rel = relstart; rel < relend; rel++)
7264 unsigned long r_symndx;
7266 struct elf_link_hash_entry *h;
7267 Elf_Internal_Sym *sym;
7269 r_symndx = ELF64_R_SYM (rel->r_info);
7270 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7274 if (rel->r_offset == offset)
7276 struct ppc_link_hash_entry *fdh = NULL;
7278 /* See if the .opd entry is full 24 byte or
7279 16 byte (with fd_aux entry overlapped with next
7282 if ((rel + 2 == relend && sec->size == offset + 16)
7283 || (rel + 3 < relend
7284 && rel[2].r_offset == offset + 16
7285 && rel[3].r_offset == offset + 24
7286 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7287 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7291 && h->root.root.string[0] == '.')
7293 struct ppc_link_hash_table *htab;
7295 htab = ppc_hash_table (info);
7297 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7300 && fdh->elf.root.type != bfd_link_hash_defined
7301 && fdh->elf.root.type != bfd_link_hash_defweak)
7305 skip = (sym_sec->owner != ibfd
7306 || sym_sec->output_section == bfd_abs_section_ptr);
7309 if (fdh != NULL && sym_sec->owner == ibfd)
7311 /* Arrange for the function descriptor sym
7313 fdh->elf.root.u.def.value = 0;
7314 fdh->elf.root.u.def.section = sym_sec;
7316 opd->adjust[rel->r_offset / 8] = -1;
7320 /* We'll be keeping this opd entry. */
7324 /* Redefine the function descriptor symbol to
7325 this location in the opd section. It is
7326 necessary to update the value here rather
7327 than using an array of adjustments as we do
7328 for local symbols, because various places
7329 in the generic ELF code use the value
7330 stored in u.def.value. */
7331 fdh->elf.root.u.def.value = wptr - new_contents;
7332 fdh->adjust_done = 1;
7335 /* Local syms are a bit tricky. We could
7336 tweak them as they can be cached, but
7337 we'd need to look through the local syms
7338 for the function descriptor sym which we
7339 don't have at the moment. So keep an
7340 array of adjustments. */
7341 opd->adjust[rel->r_offset / 8]
7342 = (wptr - new_contents) - (rptr - sec->contents);
7345 memcpy (wptr, rptr, opd_ent_size);
7346 wptr += opd_ent_size;
7347 if (add_aux_fields && opd_ent_size == 16)
7349 memset (wptr, '\0', 8);
7353 rptr += opd_ent_size;
7354 offset += opd_ent_size;
7360 && !info->relocatable
7361 && !dec_dynrel_count (rel->r_info, sec, info,
7367 /* We need to adjust any reloc offsets to point to the
7368 new opd entries. While we're at it, we may as well
7369 remove redundant relocs. */
7370 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7371 if (write_rel != rel)
7372 memcpy (write_rel, rel, sizeof (*rel));
7377 sec->size = wptr - new_contents;
7378 sec->reloc_count = write_rel - relstart;
7381 free (sec->contents);
7382 sec->contents = new_contents;
7385 /* Fudge the header size too, as this is used later in
7386 elf_bfd_final_link if we are emitting relocs. */
7387 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7388 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7391 else if (elf_section_data (sec)->relocs != relstart)
7394 if (local_syms != NULL
7395 && symtab_hdr->contents != (unsigned char *) local_syms)
7397 if (!info->keep_memory)
7400 symtab_hdr->contents = (unsigned char *) local_syms;
7405 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7407 /* If we are doing a final link and the last .opd entry is just 16 byte
7408 long, add a 8 byte padding after it. */
7409 if (need_pad != NULL && !info->relocatable)
7413 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7415 BFD_ASSERT (need_pad->size > 0);
7417 p = bfd_malloc (need_pad->size + 8);
7421 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7422 p, 0, need_pad->size))
7425 need_pad->contents = p;
7426 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7430 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7434 need_pad->contents = p;
7437 memset (need_pad->contents + need_pad->size, 0, 8);
7438 need_pad->size += 8;
7444 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7447 ppc64_elf_tls_setup (struct bfd_link_info *info,
7448 int no_tls_get_addr_opt,
7451 struct ppc_link_hash_table *htab;
7453 htab = ppc_hash_table (info);
7458 htab->do_multi_toc = 0;
7459 else if (!htab->do_multi_toc)
7462 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7463 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7464 FALSE, FALSE, TRUE));
7465 /* Move dynamic linking info to the function descriptor sym. */
7466 if (htab->tls_get_addr != NULL)
7467 func_desc_adjust (&htab->tls_get_addr->elf, info);
7468 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7469 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7470 FALSE, FALSE, TRUE));
7471 if (!no_tls_get_addr_opt)
7473 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7475 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7476 FALSE, FALSE, TRUE);
7478 func_desc_adjust (opt, info);
7479 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7480 FALSE, FALSE, TRUE);
7482 && (opt_fd->root.type == bfd_link_hash_defined
7483 || opt_fd->root.type == bfd_link_hash_defweak))
7485 /* If glibc supports an optimized __tls_get_addr call stub,
7486 signalled by the presence of __tls_get_addr_opt, and we'll
7487 be calling __tls_get_addr via a plt call stub, then
7488 make __tls_get_addr point to __tls_get_addr_opt. */
7489 tga_fd = &htab->tls_get_addr_fd->elf;
7490 if (htab->elf.dynamic_sections_created
7492 && (tga_fd->type == STT_FUNC
7493 || tga_fd->needs_plt)
7494 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7495 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7496 && tga_fd->root.type == bfd_link_hash_undefweak)))
7498 struct plt_entry *ent;
7500 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7501 if (ent->plt.refcount > 0)
7505 tga_fd->root.type = bfd_link_hash_indirect;
7506 tga_fd->root.u.i.link = &opt_fd->root;
7507 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7508 if (opt_fd->dynindx != -1)
7510 /* Use __tls_get_addr_opt in dynamic relocations. */
7511 opt_fd->dynindx = -1;
7512 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7513 opt_fd->dynstr_index);
7514 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7517 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7518 tga = &htab->tls_get_addr->elf;
7519 if (opt != NULL && tga != NULL)
7521 tga->root.type = bfd_link_hash_indirect;
7522 tga->root.u.i.link = &opt->root;
7523 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7524 _bfd_elf_link_hash_hide_symbol (info, opt,
7526 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7528 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7529 htab->tls_get_addr_fd->is_func_descriptor = 1;
7530 if (htab->tls_get_addr != NULL)
7532 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7533 htab->tls_get_addr->is_func = 1;
7539 no_tls_get_addr_opt = TRUE;
7541 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7542 return _bfd_elf_tls_setup (info->output_bfd, info);
7545 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7549 branch_reloc_hash_match (const bfd *ibfd,
7550 const Elf_Internal_Rela *rel,
7551 const struct ppc_link_hash_entry *hash1,
7552 const struct ppc_link_hash_entry *hash2)
7554 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7555 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7556 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7558 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7560 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7561 struct elf_link_hash_entry *h;
7563 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7564 h = elf_follow_link (h);
7565 if (h == &hash1->elf || h == &hash2->elf)
7571 /* Run through all the TLS relocs looking for optimization
7572 opportunities. The linker has been hacked (see ppc64elf.em) to do
7573 a preliminary section layout so that we know the TLS segment
7574 offsets. We can't optimize earlier because some optimizations need
7575 to know the tp offset, and we need to optimize before allocating
7576 dynamic relocations. */
7579 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7583 struct ppc_link_hash_table *htab;
7584 unsigned char *toc_ref;
7587 if (info->relocatable || !info->executable)
7590 htab = ppc_hash_table (info);
7594 /* Make two passes over the relocs. On the first pass, mark toc
7595 entries involved with tls relocs, and check that tls relocs
7596 involved in setting up a tls_get_addr call are indeed followed by
7597 such a call. If they are not, we can't do any tls optimization.
7598 On the second pass twiddle tls_mask flags to notify
7599 relocate_section that optimization can be done, and adjust got
7600 and plt refcounts. */
7602 for (pass = 0; pass < 2; ++pass)
7603 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7605 Elf_Internal_Sym *locsyms = NULL;
7606 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7608 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7609 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7611 Elf_Internal_Rela *relstart, *rel, *relend;
7612 bfd_boolean found_tls_get_addr_arg = 0;
7614 /* Read the relocations. */
7615 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7617 if (relstart == NULL)
7620 relend = relstart + sec->reloc_count;
7621 for (rel = relstart; rel < relend; rel++)
7623 enum elf_ppc64_reloc_type r_type;
7624 unsigned long r_symndx;
7625 struct elf_link_hash_entry *h;
7626 Elf_Internal_Sym *sym;
7628 unsigned char *tls_mask;
7629 unsigned char tls_set, tls_clear, tls_type = 0;
7631 bfd_boolean ok_tprel, is_local;
7632 long toc_ref_index = 0;
7633 int expecting_tls_get_addr = 0;
7634 bfd_boolean ret = FALSE;
7636 r_symndx = ELF64_R_SYM (rel->r_info);
7637 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7641 if (elf_section_data (sec)->relocs != relstart)
7643 if (toc_ref != NULL)
7646 && (elf_symtab_hdr (ibfd).contents
7647 != (unsigned char *) locsyms))
7654 if (h->root.type == bfd_link_hash_defined
7655 || h->root.type == bfd_link_hash_defweak)
7656 value = h->root.u.def.value;
7657 else if (h->root.type == bfd_link_hash_undefweak)
7661 found_tls_get_addr_arg = 0;
7666 /* Symbols referenced by TLS relocs must be of type
7667 STT_TLS. So no need for .opd local sym adjust. */
7668 value = sym->st_value;
7677 && h->root.type == bfd_link_hash_undefweak)
7681 value += sym_sec->output_offset;
7682 value += sym_sec->output_section->vma;
7683 value -= htab->elf.tls_sec->vma;
7684 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7685 < (bfd_vma) 1 << 32);
7689 r_type = ELF64_R_TYPE (rel->r_info);
7690 /* If this section has old-style __tls_get_addr calls
7691 without marker relocs, then check that each
7692 __tls_get_addr call reloc is preceded by a reloc
7693 that conceivably belongs to the __tls_get_addr arg
7694 setup insn. If we don't find matching arg setup
7695 relocs, don't do any tls optimization. */
7697 && sec->has_tls_get_addr_call
7699 && (h == &htab->tls_get_addr->elf
7700 || h == &htab->tls_get_addr_fd->elf)
7701 && !found_tls_get_addr_arg
7702 && is_branch_reloc (r_type))
7704 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
7705 "TLS optimization disabled\n"),
7706 ibfd, sec, rel->r_offset);
7711 found_tls_get_addr_arg = 0;
7714 case R_PPC64_GOT_TLSLD16:
7715 case R_PPC64_GOT_TLSLD16_LO:
7716 expecting_tls_get_addr = 1;
7717 found_tls_get_addr_arg = 1;
7720 case R_PPC64_GOT_TLSLD16_HI:
7721 case R_PPC64_GOT_TLSLD16_HA:
7722 /* These relocs should never be against a symbol
7723 defined in a shared lib. Leave them alone if
7724 that turns out to be the case. */
7731 tls_type = TLS_TLS | TLS_LD;
7734 case R_PPC64_GOT_TLSGD16:
7735 case R_PPC64_GOT_TLSGD16_LO:
7736 expecting_tls_get_addr = 1;
7737 found_tls_get_addr_arg = 1;
7740 case R_PPC64_GOT_TLSGD16_HI:
7741 case R_PPC64_GOT_TLSGD16_HA:
7747 tls_set = TLS_TLS | TLS_TPRELGD;
7749 tls_type = TLS_TLS | TLS_GD;
7752 case R_PPC64_GOT_TPREL16_DS:
7753 case R_PPC64_GOT_TPREL16_LO_DS:
7754 case R_PPC64_GOT_TPREL16_HI:
7755 case R_PPC64_GOT_TPREL16_HA:
7760 tls_clear = TLS_TPREL;
7761 tls_type = TLS_TLS | TLS_TPREL;
7768 found_tls_get_addr_arg = 1;
7773 case R_PPC64_TOC16_LO:
7774 if (sym_sec == NULL || sym_sec != toc)
7777 /* Mark this toc entry as referenced by a TLS
7778 code sequence. We can do that now in the
7779 case of R_PPC64_TLS, and after checking for
7780 tls_get_addr for the TOC16 relocs. */
7781 if (toc_ref == NULL)
7782 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7783 if (toc_ref == NULL)
7787 value = h->root.u.def.value;
7789 value = sym->st_value;
7790 value += rel->r_addend;
7791 BFD_ASSERT (value < toc->size && value % 8 == 0);
7792 toc_ref_index = (value + toc->output_offset) / 8;
7793 if (r_type == R_PPC64_TLS
7794 || r_type == R_PPC64_TLSGD
7795 || r_type == R_PPC64_TLSLD)
7797 toc_ref[toc_ref_index] = 1;
7801 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7806 expecting_tls_get_addr = 2;
7809 case R_PPC64_TPREL64:
7813 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7818 tls_set = TLS_EXPLICIT;
7819 tls_clear = TLS_TPREL;
7824 case R_PPC64_DTPMOD64:
7828 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7830 if (rel + 1 < relend
7832 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7833 && rel[1].r_offset == rel->r_offset + 8)
7837 tls_set = TLS_EXPLICIT | TLS_GD;
7840 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7849 tls_set = TLS_EXPLICIT;
7860 if (!expecting_tls_get_addr
7861 || !sec->has_tls_get_addr_call)
7864 if (rel + 1 < relend
7865 && branch_reloc_hash_match (ibfd, rel + 1,
7867 htab->tls_get_addr_fd))
7869 if (expecting_tls_get_addr == 2)
7871 /* Check for toc tls entries. */
7872 unsigned char *toc_tls;
7875 retval = get_tls_mask (&toc_tls, NULL, NULL,
7880 if (toc_tls != NULL)
7882 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7883 found_tls_get_addr_arg = 1;
7885 toc_ref[toc_ref_index] = 1;
7891 if (expecting_tls_get_addr != 1)
7894 /* Uh oh, we didn't find the expected call. We
7895 could just mark this symbol to exclude it
7896 from tls optimization but it's safer to skip
7897 the entire optimization. */
7898 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
7899 "TLS optimization disabled\n"),
7900 ibfd, sec, rel->r_offset);
7905 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7907 struct plt_entry *ent;
7908 for (ent = htab->tls_get_addr->elf.plt.plist;
7911 if (ent->addend == 0)
7913 if (ent->plt.refcount > 0)
7915 ent->plt.refcount -= 1;
7916 expecting_tls_get_addr = 0;
7922 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7924 struct plt_entry *ent;
7925 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7928 if (ent->addend == 0)
7930 if (ent->plt.refcount > 0)
7931 ent->plt.refcount -= 1;
7939 if ((tls_set & TLS_EXPLICIT) == 0)
7941 struct got_entry *ent;
7943 /* Adjust got entry for this reloc. */
7947 ent = elf_local_got_ents (ibfd)[r_symndx];
7949 for (; ent != NULL; ent = ent->next)
7950 if (ent->addend == rel->r_addend
7951 && ent->owner == ibfd
7952 && ent->tls_type == tls_type)
7959 /* We managed to get rid of a got entry. */
7960 if (ent->got.refcount > 0)
7961 ent->got.refcount -= 1;
7966 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7967 we'll lose one or two dyn relocs. */
7968 if (!dec_dynrel_count (rel->r_info, sec, info,
7972 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7974 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7980 *tls_mask |= tls_set;
7981 *tls_mask &= ~tls_clear;
7984 if (elf_section_data (sec)->relocs != relstart)
7989 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7991 if (!info->keep_memory)
7994 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7998 if (toc_ref != NULL)
8003 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8004 the values of any global symbols in a toc section that has been
8005 edited. Globals in toc sections should be a rarity, so this function
8006 sets a flag if any are found in toc sections other than the one just
8007 edited, so that futher hash table traversals can be avoided. */
8009 struct adjust_toc_info
8012 unsigned long *skip;
8013 bfd_boolean global_toc_syms;
8016 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8019 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8021 struct ppc_link_hash_entry *eh;
8022 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8025 if (h->root.type != bfd_link_hash_defined
8026 && h->root.type != bfd_link_hash_defweak)
8029 eh = (struct ppc_link_hash_entry *) h;
8030 if (eh->adjust_done)
8033 if (eh->elf.root.u.def.section == toc_inf->toc)
8035 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8036 i = toc_inf->toc->rawsize >> 3;
8038 i = eh->elf.root.u.def.value >> 3;
8040 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8042 (*_bfd_error_handler)
8043 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8046 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8047 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8050 eh->elf.root.u.def.value -= toc_inf->skip[i];
8051 eh->adjust_done = 1;
8053 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8054 toc_inf->global_toc_syms = TRUE;
8059 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8062 ok_lo_toc_insn (unsigned int insn)
8064 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8065 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8066 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8067 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8068 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8069 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8070 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8071 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8072 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8073 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8074 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8075 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8076 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8077 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8078 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8080 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8081 && ((insn & 3) == 0 || (insn & 3) == 3))
8082 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8085 /* Examine all relocs referencing .toc sections in order to remove
8086 unused .toc entries. */
8089 ppc64_elf_edit_toc (struct bfd_link_info *info)
8092 struct adjust_toc_info toc_inf;
8093 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8095 htab->do_toc_opt = 1;
8096 toc_inf.global_toc_syms = TRUE;
8097 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8099 asection *toc, *sec;
8100 Elf_Internal_Shdr *symtab_hdr;
8101 Elf_Internal_Sym *local_syms;
8102 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8103 unsigned long *skip, *drop;
8104 unsigned char *used;
8105 unsigned char *keep, last, some_unused;
8107 if (!is_ppc64_elf (ibfd))
8110 toc = bfd_get_section_by_name (ibfd, ".toc");
8113 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
8114 || elf_discarded_section (toc))
8119 symtab_hdr = &elf_symtab_hdr (ibfd);
8121 /* Look at sections dropped from the final link. */
8124 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8126 if (sec->reloc_count == 0
8127 || !elf_discarded_section (sec)
8128 || get_opd_info (sec)
8129 || (sec->flags & SEC_ALLOC) == 0
8130 || (sec->flags & SEC_DEBUGGING) != 0)
8133 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8134 if (relstart == NULL)
8137 /* Run through the relocs to see which toc entries might be
8139 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8141 enum elf_ppc64_reloc_type r_type;
8142 unsigned long r_symndx;
8144 struct elf_link_hash_entry *h;
8145 Elf_Internal_Sym *sym;
8148 r_type = ELF64_R_TYPE (rel->r_info);
8155 case R_PPC64_TOC16_LO:
8156 case R_PPC64_TOC16_HI:
8157 case R_PPC64_TOC16_HA:
8158 case R_PPC64_TOC16_DS:
8159 case R_PPC64_TOC16_LO_DS:
8163 r_symndx = ELF64_R_SYM (rel->r_info);
8164 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8172 val = h->root.u.def.value;
8174 val = sym->st_value;
8175 val += rel->r_addend;
8177 if (val >= toc->size)
8180 /* Anything in the toc ought to be aligned to 8 bytes.
8181 If not, don't mark as unused. */
8187 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8192 skip[val >> 3] = ref_from_discarded;
8195 if (elf_section_data (sec)->relocs != relstart)
8199 /* For largetoc loads of address constants, we can convert
8200 . addis rx,2,addr@got@ha
8201 . ld ry,addr@got@l(rx)
8203 . addis rx,2,addr@toc@ha
8204 . addi ry,rx,addr@toc@l
8205 when addr is within 2G of the toc pointer. This then means
8206 that the word storing "addr" in the toc is no longer needed. */
8208 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8209 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8210 && toc->reloc_count != 0)
8212 /* Read toc relocs. */
8213 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8215 if (toc_relocs == NULL)
8218 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8220 enum elf_ppc64_reloc_type r_type;
8221 unsigned long r_symndx;
8223 struct elf_link_hash_entry *h;
8224 Elf_Internal_Sym *sym;
8227 r_type = ELF64_R_TYPE (rel->r_info);
8228 if (r_type != R_PPC64_ADDR64)
8231 r_symndx = ELF64_R_SYM (rel->r_info);
8232 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8237 || elf_discarded_section (sym_sec))
8240 if (!SYMBOL_CALLS_LOCAL (info, h))
8245 if (h->type == STT_GNU_IFUNC)
8247 val = h->root.u.def.value;
8251 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8253 val = sym->st_value;
8255 val += rel->r_addend;
8256 val += sym_sec->output_section->vma + sym_sec->output_offset;
8258 /* We don't yet know the exact toc pointer value, but we
8259 know it will be somewhere in the toc section. Don't
8260 optimize if the difference from any possible toc
8261 pointer is outside [ff..f80008000, 7fff7fff]. */
8262 addr = toc->output_section->vma + TOC_BASE_OFF;
8263 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8266 addr = toc->output_section->vma + toc->output_section->rawsize;
8267 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8272 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8277 skip[rel->r_offset >> 3]
8278 |= can_optimize | ((rel - toc_relocs) << 2);
8285 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8289 if (local_syms != NULL
8290 && symtab_hdr->contents != (unsigned char *) local_syms)
8294 && elf_section_data (sec)->relocs != relstart)
8296 if (toc_relocs != NULL
8297 && elf_section_data (toc)->relocs != toc_relocs)
8304 /* Now check all kept sections that might reference the toc.
8305 Check the toc itself last. */
8306 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8309 sec = (sec == toc ? NULL
8310 : sec->next == NULL ? toc
8311 : sec->next == toc && toc->next ? toc->next
8316 if (sec->reloc_count == 0
8317 || elf_discarded_section (sec)
8318 || get_opd_info (sec)
8319 || (sec->flags & SEC_ALLOC) == 0
8320 || (sec->flags & SEC_DEBUGGING) != 0)
8323 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8325 if (relstart == NULL)
8328 /* Mark toc entries referenced as used. */
8331 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8333 enum elf_ppc64_reloc_type r_type;
8334 unsigned long r_symndx;
8336 struct elf_link_hash_entry *h;
8337 Elf_Internal_Sym *sym;
8339 enum {no_check, check_lo, check_ha} insn_check;
8341 r_type = ELF64_R_TYPE (rel->r_info);
8345 insn_check = no_check;
8348 case R_PPC64_GOT_TLSLD16_HA:
8349 case R_PPC64_GOT_TLSGD16_HA:
8350 case R_PPC64_GOT_TPREL16_HA:
8351 case R_PPC64_GOT_DTPREL16_HA:
8352 case R_PPC64_GOT16_HA:
8353 case R_PPC64_TOC16_HA:
8354 insn_check = check_ha;
8357 case R_PPC64_GOT_TLSLD16_LO:
8358 case R_PPC64_GOT_TLSGD16_LO:
8359 case R_PPC64_GOT_TPREL16_LO_DS:
8360 case R_PPC64_GOT_DTPREL16_LO_DS:
8361 case R_PPC64_GOT16_LO:
8362 case R_PPC64_GOT16_LO_DS:
8363 case R_PPC64_TOC16_LO:
8364 case R_PPC64_TOC16_LO_DS:
8365 insn_check = check_lo;
8369 if (insn_check != no_check)
8371 bfd_vma off = rel->r_offset & ~3;
8372 unsigned char buf[4];
8375 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8380 insn = bfd_get_32 (ibfd, buf);
8381 if (insn_check == check_lo
8382 ? !ok_lo_toc_insn (insn)
8383 : ((insn & ((0x3f << 26) | 0x1f << 16))
8384 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8388 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8389 sprintf (str, "%#08x", insn);
8390 info->callbacks->einfo
8391 (_("%P: %H: toc optimization is not supported for"
8392 " %s instruction.\n"),
8393 ibfd, sec, rel->r_offset & ~3, str);
8400 case R_PPC64_TOC16_LO:
8401 case R_PPC64_TOC16_HI:
8402 case R_PPC64_TOC16_HA:
8403 case R_PPC64_TOC16_DS:
8404 case R_PPC64_TOC16_LO_DS:
8405 /* In case we're taking addresses of toc entries. */
8406 case R_PPC64_ADDR64:
8413 r_symndx = ELF64_R_SYM (rel->r_info);
8414 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8425 val = h->root.u.def.value;
8427 val = sym->st_value;
8428 val += rel->r_addend;
8430 if (val >= toc->size)
8433 if ((skip[val >> 3] & can_optimize) != 0)
8440 case R_PPC64_TOC16_HA:
8443 case R_PPC64_TOC16_LO_DS:
8444 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8445 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
8450 if ((opc & (0x3f << 2)) == (58u << 2))
8455 /* Wrong sort of reloc, or not a ld. We may
8456 as well clear ref_from_discarded too. */
8461 /* For the toc section, we only mark as used if
8462 this entry itself isn't unused. */
8465 && (used[rel->r_offset >> 3]
8466 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
8467 /* Do all the relocs again, to catch reference
8475 if (elf_section_data (sec)->relocs != relstart)
8479 /* Merge the used and skip arrays. Assume that TOC
8480 doublewords not appearing as either used or unused belong
8481 to to an entry more than one doubleword in size. */
8482 for (drop = skip, keep = used, last = 0, some_unused = 0;
8483 drop < skip + (toc->size + 7) / 8;
8488 *drop &= ~ref_from_discarded;
8489 if ((*drop & can_optimize) != 0)
8493 else if ((*drop & ref_from_discarded) != 0)
8496 last = ref_from_discarded;
8506 bfd_byte *contents, *src;
8508 Elf_Internal_Sym *sym;
8509 bfd_boolean local_toc_syms = FALSE;
8511 /* Shuffle the toc contents, and at the same time convert the
8512 skip array from booleans into offsets. */
8513 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8516 elf_section_data (toc)->this_hdr.contents = contents;
8518 for (src = contents, off = 0, drop = skip;
8519 src < contents + toc->size;
8522 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8527 memcpy (src - off, src, 8);
8531 toc->rawsize = toc->size;
8532 toc->size = src - contents - off;
8534 /* Adjust addends for relocs against the toc section sym,
8535 and optimize any accesses we can. */
8536 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8538 if (sec->reloc_count == 0
8539 || elf_discarded_section (sec))
8542 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8544 if (relstart == NULL)
8547 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8549 enum elf_ppc64_reloc_type r_type;
8550 unsigned long r_symndx;
8552 struct elf_link_hash_entry *h;
8555 r_type = ELF64_R_TYPE (rel->r_info);
8562 case R_PPC64_TOC16_LO:
8563 case R_PPC64_TOC16_HI:
8564 case R_PPC64_TOC16_HA:
8565 case R_PPC64_TOC16_DS:
8566 case R_PPC64_TOC16_LO_DS:
8567 case R_PPC64_ADDR64:
8571 r_symndx = ELF64_R_SYM (rel->r_info);
8572 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8580 val = h->root.u.def.value;
8583 val = sym->st_value;
8585 local_toc_syms = TRUE;
8588 val += rel->r_addend;
8590 if (val > toc->rawsize)
8592 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8594 else if ((skip[val >> 3] & can_optimize) != 0)
8596 Elf_Internal_Rela *tocrel
8597 = toc_relocs + (skip[val >> 3] >> 2);
8598 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8602 case R_PPC64_TOC16_HA:
8603 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8606 case R_PPC64_TOC16_LO_DS:
8607 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8611 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8613 info->callbacks->einfo
8614 (_("%P: %H: %s relocation references "
8615 "optimized away TOC entry\n"),
8616 ibfd, sec, rel->r_offset,
8617 ppc64_elf_howto_table[r_type]->name);
8618 bfd_set_error (bfd_error_bad_value);
8621 rel->r_addend = tocrel->r_addend;
8622 elf_section_data (sec)->relocs = relstart;
8626 if (h != NULL || sym->st_value != 0)
8629 rel->r_addend -= skip[val >> 3];
8630 elf_section_data (sec)->relocs = relstart;
8633 if (elf_section_data (sec)->relocs != relstart)
8637 /* We shouldn't have local or global symbols defined in the TOC,
8638 but handle them anyway. */
8639 if (local_syms != NULL)
8640 for (sym = local_syms;
8641 sym < local_syms + symtab_hdr->sh_info;
8643 if (sym->st_value != 0
8644 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8648 if (sym->st_value > toc->rawsize)
8649 i = toc->rawsize >> 3;
8651 i = sym->st_value >> 3;
8653 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8656 (*_bfd_error_handler)
8657 (_("%s defined on removed toc entry"),
8658 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8661 while ((skip[i] & (ref_from_discarded | can_optimize)));
8662 sym->st_value = (bfd_vma) i << 3;
8665 sym->st_value -= skip[i];
8666 symtab_hdr->contents = (unsigned char *) local_syms;
8669 /* Adjust any global syms defined in this toc input section. */
8670 if (toc_inf.global_toc_syms)
8673 toc_inf.skip = skip;
8674 toc_inf.global_toc_syms = FALSE;
8675 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8679 if (toc->reloc_count != 0)
8681 Elf_Internal_Shdr *rel_hdr;
8682 Elf_Internal_Rela *wrel;
8685 /* Remove unused toc relocs, and adjust those we keep. */
8686 if (toc_relocs == NULL)
8687 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8689 if (toc_relocs == NULL)
8693 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8694 if ((skip[rel->r_offset >> 3]
8695 & (ref_from_discarded | can_optimize)) == 0)
8697 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8698 wrel->r_info = rel->r_info;
8699 wrel->r_addend = rel->r_addend;
8702 else if (!dec_dynrel_count (rel->r_info, toc, info,
8703 &local_syms, NULL, NULL))
8706 elf_section_data (toc)->relocs = toc_relocs;
8707 toc->reloc_count = wrel - toc_relocs;
8708 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8709 sz = rel_hdr->sh_entsize;
8710 rel_hdr->sh_size = toc->reloc_count * sz;
8713 else if (toc_relocs != NULL
8714 && elf_section_data (toc)->relocs != toc_relocs)
8717 if (local_syms != NULL
8718 && symtab_hdr->contents != (unsigned char *) local_syms)
8720 if (!info->keep_memory)
8723 symtab_hdr->contents = (unsigned char *) local_syms;
8731 /* Return true iff input section I references the TOC using
8732 instructions limited to +/-32k offsets. */
8735 ppc64_elf_has_small_toc_reloc (asection *i)
8737 return (is_ppc64_elf (i->owner)
8738 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8741 /* Allocate space for one GOT entry. */
8744 allocate_got (struct elf_link_hash_entry *h,
8745 struct bfd_link_info *info,
8746 struct got_entry *gent)
8748 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8750 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8751 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8753 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8754 ? 2 : 1) * sizeof (Elf64_External_Rela);
8755 asection *got = ppc64_elf_tdata (gent->owner)->got;
8757 gent->got.offset = got->size;
8758 got->size += entsize;
8760 dyn = htab->elf.dynamic_sections_created;
8762 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8763 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8764 || h->root.type != bfd_link_hash_undefweak))
8766 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8767 relgot->size += rentsize;
8769 else if (h->type == STT_GNU_IFUNC)
8771 asection *relgot = htab->reliplt;
8772 relgot->size += rentsize;
8773 htab->got_reli_size += rentsize;
8777 /* This function merges got entries in the same toc group. */
8780 merge_got_entries (struct got_entry **pent)
8782 struct got_entry *ent, *ent2;
8784 for (ent = *pent; ent != NULL; ent = ent->next)
8785 if (!ent->is_indirect)
8786 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8787 if (!ent2->is_indirect
8788 && ent2->addend == ent->addend
8789 && ent2->tls_type == ent->tls_type
8790 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8792 ent2->is_indirect = TRUE;
8793 ent2->got.ent = ent;
8797 /* Allocate space in .plt, .got and associated reloc sections for
8801 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8803 struct bfd_link_info *info;
8804 struct ppc_link_hash_table *htab;
8806 struct ppc_link_hash_entry *eh;
8807 struct elf_dyn_relocs *p;
8808 struct got_entry **pgent, *gent;
8810 if (h->root.type == bfd_link_hash_indirect)
8813 info = (struct bfd_link_info *) inf;
8814 htab = ppc_hash_table (info);
8818 if ((htab->elf.dynamic_sections_created
8820 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8821 || h->type == STT_GNU_IFUNC)
8823 struct plt_entry *pent;
8824 bfd_boolean doneone = FALSE;
8825 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8826 if (pent->plt.refcount > 0)
8828 if (!htab->elf.dynamic_sections_created
8829 || h->dynindx == -1)
8832 pent->plt.offset = s->size;
8833 s->size += PLT_ENTRY_SIZE;
8838 /* If this is the first .plt entry, make room for the special
8842 s->size += PLT_INITIAL_ENTRY_SIZE;
8844 pent->plt.offset = s->size;
8846 /* Make room for this entry. */
8847 s->size += PLT_ENTRY_SIZE;
8849 /* Make room for the .glink code. */
8852 s->size += GLINK_CALL_STUB_SIZE;
8853 /* We need bigger stubs past index 32767. */
8854 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8858 /* We also need to make an entry in the .rela.plt section. */
8861 s->size += sizeof (Elf64_External_Rela);
8865 pent->plt.offset = (bfd_vma) -1;
8868 h->plt.plist = NULL;
8874 h->plt.plist = NULL;
8878 eh = (struct ppc_link_hash_entry *) h;
8879 /* Run through the TLS GD got entries first if we're changing them
8881 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8882 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8883 if (gent->got.refcount > 0
8884 && (gent->tls_type & TLS_GD) != 0)
8886 /* This was a GD entry that has been converted to TPREL. If
8887 there happens to be a TPREL entry we can use that one. */
8888 struct got_entry *ent;
8889 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8890 if (ent->got.refcount > 0
8891 && (ent->tls_type & TLS_TPREL) != 0
8892 && ent->addend == gent->addend
8893 && ent->owner == gent->owner)
8895 gent->got.refcount = 0;
8899 /* If not, then we'll be using our own TPREL entry. */
8900 if (gent->got.refcount != 0)
8901 gent->tls_type = TLS_TLS | TLS_TPREL;
8904 /* Remove any list entry that won't generate a word in the GOT before
8905 we call merge_got_entries. Otherwise we risk merging to empty
8907 pgent = &h->got.glist;
8908 while ((gent = *pgent) != NULL)
8909 if (gent->got.refcount > 0)
8911 if ((gent->tls_type & TLS_LD) != 0
8914 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8915 *pgent = gent->next;
8918 pgent = &gent->next;
8921 *pgent = gent->next;
8923 if (!htab->do_multi_toc)
8924 merge_got_entries (&h->got.glist);
8926 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8927 if (!gent->is_indirect)
8929 /* Make sure this symbol is output as a dynamic symbol.
8930 Undefined weak syms won't yet be marked as dynamic,
8931 nor will all TLS symbols. */
8932 if (h->dynindx == -1
8934 && h->type != STT_GNU_IFUNC
8935 && htab->elf.dynamic_sections_created)
8937 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8941 if (!is_ppc64_elf (gent->owner))
8944 allocate_got (h, info, gent);
8947 if (eh->dyn_relocs == NULL
8948 || (!htab->elf.dynamic_sections_created
8949 && h->type != STT_GNU_IFUNC))
8952 /* In the shared -Bsymbolic case, discard space allocated for
8953 dynamic pc-relative relocs against symbols which turn out to be
8954 defined in regular objects. For the normal shared case, discard
8955 space for relocs that have become local due to symbol visibility
8960 /* Relocs that use pc_count are those that appear on a call insn,
8961 or certain REL relocs (see must_be_dyn_reloc) that can be
8962 generated via assembly. We want calls to protected symbols to
8963 resolve directly to the function rather than going via the plt.
8964 If people want function pointer comparisons to work as expected
8965 then they should avoid writing weird assembly. */
8966 if (SYMBOL_CALLS_LOCAL (info, h))
8968 struct elf_dyn_relocs **pp;
8970 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8972 p->count -= p->pc_count;
8981 /* Also discard relocs on undefined weak syms with non-default
8983 if (eh->dyn_relocs != NULL
8984 && h->root.type == bfd_link_hash_undefweak)
8986 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8987 eh->dyn_relocs = NULL;
8989 /* Make sure this symbol is output as a dynamic symbol.
8990 Undefined weak syms won't yet be marked as dynamic. */
8991 else if (h->dynindx == -1
8992 && !h->forced_local)
8994 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8999 else if (h->type == STT_GNU_IFUNC)
9001 if (!h->non_got_ref)
9002 eh->dyn_relocs = NULL;
9004 else if (ELIMINATE_COPY_RELOCS)
9006 /* For the non-shared case, discard space for relocs against
9007 symbols which turn out to need copy relocs or are not
9013 /* Make sure this symbol is output as a dynamic symbol.
9014 Undefined weak syms won't yet be marked as dynamic. */
9015 if (h->dynindx == -1
9016 && !h->forced_local)
9018 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9022 /* If that succeeded, we know we'll be keeping all the
9024 if (h->dynindx != -1)
9028 eh->dyn_relocs = NULL;
9033 /* Finally, allocate space. */
9034 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9036 asection *sreloc = elf_section_data (p->sec)->sreloc;
9037 if (!htab->elf.dynamic_sections_created)
9038 sreloc = htab->reliplt;
9039 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9045 /* Find any dynamic relocs that apply to read-only sections. */
9048 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9050 struct ppc_link_hash_entry *eh;
9051 struct elf_dyn_relocs *p;
9053 eh = (struct ppc_link_hash_entry *) h;
9054 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9056 asection *s = p->sec->output_section;
9058 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9060 struct bfd_link_info *info = inf;
9062 info->flags |= DF_TEXTREL;
9064 /* Not an error, just cut short the traversal. */
9071 /* Set the sizes of the dynamic sections. */
9074 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
9075 struct bfd_link_info *info)
9077 struct ppc_link_hash_table *htab;
9082 struct got_entry *first_tlsld;
9084 htab = ppc_hash_table (info);
9088 dynobj = htab->elf.dynobj;
9092 if (htab->elf.dynamic_sections_created)
9094 /* Set the contents of the .interp section to the interpreter. */
9095 if (info->executable)
9097 s = bfd_get_section_by_name (dynobj, ".interp");
9100 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9101 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9105 /* Set up .got offsets for local syms, and space for local dynamic
9107 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9109 struct got_entry **lgot_ents;
9110 struct got_entry **end_lgot_ents;
9111 struct plt_entry **local_plt;
9112 struct plt_entry **end_local_plt;
9113 unsigned char *lgot_masks;
9114 bfd_size_type locsymcount;
9115 Elf_Internal_Shdr *symtab_hdr;
9118 if (!is_ppc64_elf (ibfd))
9121 for (s = ibfd->sections; s != NULL; s = s->next)
9123 struct elf_dyn_relocs *p;
9125 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9127 if (!bfd_is_abs_section (p->sec)
9128 && bfd_is_abs_section (p->sec->output_section))
9130 /* Input section has been discarded, either because
9131 it is a copy of a linkonce section or due to
9132 linker script /DISCARD/, so we'll be discarding
9135 else if (p->count != 0)
9137 srel = elf_section_data (p->sec)->sreloc;
9138 if (!htab->elf.dynamic_sections_created)
9139 srel = htab->reliplt;
9140 srel->size += p->count * sizeof (Elf64_External_Rela);
9141 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9142 info->flags |= DF_TEXTREL;
9147 lgot_ents = elf_local_got_ents (ibfd);
9151 symtab_hdr = &elf_symtab_hdr (ibfd);
9152 locsymcount = symtab_hdr->sh_info;
9153 end_lgot_ents = lgot_ents + locsymcount;
9154 local_plt = (struct plt_entry **) end_lgot_ents;
9155 end_local_plt = local_plt + locsymcount;
9156 lgot_masks = (unsigned char *) end_local_plt;
9157 s = ppc64_elf_tdata (ibfd)->got;
9158 srel = ppc64_elf_tdata (ibfd)->relgot;
9159 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9161 struct got_entry **pent, *ent;
9164 while ((ent = *pent) != NULL)
9165 if (ent->got.refcount > 0)
9167 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9169 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9174 unsigned int num = 1;
9175 ent->got.offset = s->size;
9176 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9180 srel->size += num * sizeof (Elf64_External_Rela);
9181 else if ((*lgot_masks & PLT_IFUNC) != 0)
9184 += num * sizeof (Elf64_External_Rela);
9186 += num * sizeof (Elf64_External_Rela);
9195 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9196 for (; local_plt < end_local_plt; ++local_plt)
9198 struct plt_entry *ent;
9200 for (ent = *local_plt; ent != NULL; ent = ent->next)
9201 if (ent->plt.refcount > 0)
9204 ent->plt.offset = s->size;
9205 s->size += PLT_ENTRY_SIZE;
9207 htab->reliplt->size += sizeof (Elf64_External_Rela);
9210 ent->plt.offset = (bfd_vma) -1;
9214 /* Allocate global sym .plt and .got entries, and space for global
9215 sym dynamic relocs. */
9216 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9219 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9221 struct got_entry *ent;
9223 if (!is_ppc64_elf (ibfd))
9226 ent = ppc64_tlsld_got (ibfd);
9227 if (ent->got.refcount > 0)
9229 if (!htab->do_multi_toc && first_tlsld != NULL)
9231 ent->is_indirect = TRUE;
9232 ent->got.ent = first_tlsld;
9236 if (first_tlsld == NULL)
9238 s = ppc64_elf_tdata (ibfd)->got;
9239 ent->got.offset = s->size;
9244 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9245 srel->size += sizeof (Elf64_External_Rela);
9250 ent->got.offset = (bfd_vma) -1;
9253 /* We now have determined the sizes of the various dynamic sections.
9254 Allocate memory for them. */
9256 for (s = dynobj->sections; s != NULL; s = s->next)
9258 if ((s->flags & SEC_LINKER_CREATED) == 0)
9261 if (s == htab->brlt || s == htab->relbrlt)
9262 /* These haven't been allocated yet; don't strip. */
9264 else if (s == htab->got
9268 || s == htab->dynbss)
9270 /* Strip this section if we don't need it; see the
9273 else if (s == htab->glink_eh_frame)
9275 if (!bfd_is_abs_section (s->output_section))
9276 /* Not sized yet. */
9279 else if (CONST_STRNEQ (s->name, ".rela"))
9283 if (s != htab->relplt)
9286 /* We use the reloc_count field as a counter if we need
9287 to copy relocs into the output file. */
9293 /* It's not one of our sections, so don't allocate space. */
9299 /* If we don't need this section, strip it from the
9300 output file. This is mostly to handle .rela.bss and
9301 .rela.plt. We must create both sections in
9302 create_dynamic_sections, because they must be created
9303 before the linker maps input sections to output
9304 sections. The linker does that before
9305 adjust_dynamic_symbol is called, and it is that
9306 function which decides whether anything needs to go
9307 into these sections. */
9308 s->flags |= SEC_EXCLUDE;
9312 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9315 /* Allocate memory for the section contents. We use bfd_zalloc
9316 here in case unused entries are not reclaimed before the
9317 section's contents are written out. This should not happen,
9318 but this way if it does we get a R_PPC64_NONE reloc in .rela
9319 sections instead of garbage.
9320 We also rely on the section contents being zero when writing
9322 s->contents = bfd_zalloc (dynobj, s->size);
9323 if (s->contents == NULL)
9327 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9329 if (!is_ppc64_elf (ibfd))
9332 s = ppc64_elf_tdata (ibfd)->got;
9333 if (s != NULL && s != htab->got)
9336 s->flags |= SEC_EXCLUDE;
9339 s->contents = bfd_zalloc (ibfd, s->size);
9340 if (s->contents == NULL)
9344 s = ppc64_elf_tdata (ibfd)->relgot;
9348 s->flags |= SEC_EXCLUDE;
9351 s->contents = bfd_zalloc (ibfd, s->size);
9352 if (s->contents == NULL)
9360 if (htab->elf.dynamic_sections_created)
9362 /* Add some entries to the .dynamic section. We fill in the
9363 values later, in ppc64_elf_finish_dynamic_sections, but we
9364 must add the entries now so that we get the correct size for
9365 the .dynamic section. The DT_DEBUG entry is filled in by the
9366 dynamic linker and used by the debugger. */
9367 #define add_dynamic_entry(TAG, VAL) \
9368 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9370 if (info->executable)
9372 if (!add_dynamic_entry (DT_DEBUG, 0))
9376 if (htab->plt != NULL && htab->plt->size != 0)
9378 if (!add_dynamic_entry (DT_PLTGOT, 0)
9379 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9380 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9381 || !add_dynamic_entry (DT_JMPREL, 0)
9382 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9388 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9389 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9393 if (!htab->no_tls_get_addr_opt
9394 && htab->tls_get_addr_fd != NULL
9395 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9396 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9401 if (!add_dynamic_entry (DT_RELA, 0)
9402 || !add_dynamic_entry (DT_RELASZ, 0)
9403 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9406 /* If any dynamic relocs apply to a read-only section,
9407 then we need a DT_TEXTREL entry. */
9408 if ((info->flags & DF_TEXTREL) == 0)
9409 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9411 if ((info->flags & DF_TEXTREL) != 0)
9413 if (!add_dynamic_entry (DT_TEXTREL, 0))
9418 #undef add_dynamic_entry
9423 /* Determine the type of stub needed, if any, for a call. */
9425 static inline enum ppc_stub_type
9426 ppc_type_of_stub (asection *input_sec,
9427 const Elf_Internal_Rela *rel,
9428 struct ppc_link_hash_entry **hash,
9429 struct plt_entry **plt_ent,
9430 bfd_vma destination)
9432 struct ppc_link_hash_entry *h = *hash;
9434 bfd_vma branch_offset;
9435 bfd_vma max_branch_offset;
9436 enum elf_ppc64_reloc_type r_type;
9440 struct plt_entry *ent;
9441 struct ppc_link_hash_entry *fdh = h;
9443 && h->oh->is_func_descriptor)
9445 fdh = ppc_follow_link (h->oh);
9449 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9450 if (ent->addend == rel->r_addend
9451 && ent->plt.offset != (bfd_vma) -1)
9454 return ppc_stub_plt_call;
9457 /* Here, we know we don't have a plt entry. If we don't have a
9458 either a defined function descriptor or a defined entry symbol
9459 in a regular object file, then it is pointless trying to make
9460 any other type of stub. */
9461 if (!is_static_defined (&fdh->elf)
9462 && !is_static_defined (&h->elf))
9463 return ppc_stub_none;
9465 else if (elf_local_got_ents (input_sec->owner) != NULL)
9467 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9468 struct plt_entry **local_plt = (struct plt_entry **)
9469 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9470 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9472 if (local_plt[r_symndx] != NULL)
9474 struct plt_entry *ent;
9476 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9477 if (ent->addend == rel->r_addend
9478 && ent->plt.offset != (bfd_vma) -1)
9481 return ppc_stub_plt_call;
9486 /* Determine where the call point is. */
9487 location = (input_sec->output_offset
9488 + input_sec->output_section->vma
9491 branch_offset = destination - location;
9492 r_type = ELF64_R_TYPE (rel->r_info);
9494 /* Determine if a long branch stub is needed. */
9495 max_branch_offset = 1 << 25;
9496 if (r_type != R_PPC64_REL24)
9497 max_branch_offset = 1 << 15;
9499 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9500 /* We need a stub. Figure out whether a long_branch or plt_branch
9502 return ppc_stub_long_branch;
9504 return ppc_stub_none;
9507 /* With power7 weakly ordered memory model, it is possible for ld.so
9508 to update a plt entry in one thread and have another thread see a
9509 stale zero toc entry. To avoid this we need some sort of acquire
9510 barrier in the call stub. One solution is to make the load of the
9511 toc word seem to appear to depend on the load of the function entry
9512 word. Another solution is to test for r2 being zero, and branch to
9513 the appropriate glink entry if so.
9515 . fake dep barrier compare
9516 . ld 11,xxx(2) ld 11,xxx(2)
9518 . xor 11,11,11 ld 2,xxx+8(2)
9519 . add 2,2,11 cmpldi 2,0
9520 . ld 2,xxx+8(2) bnectr+
9521 . bctr b <glink_entry>
9523 The solution involving the compare turns out to be faster, so
9524 that's what we use unless the branch won't reach. */
9526 #define ALWAYS_USE_FAKE_DEP 0
9527 #define ALWAYS_EMIT_R2SAVE 0
9529 #define PPC_LO(v) ((v) & 0xffff)
9530 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9531 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9533 static inline unsigned int
9534 plt_stub_size (struct ppc_link_hash_table *htab,
9535 struct ppc_stub_hash_entry *stub_entry,
9538 unsigned size = PLT_CALL_STUB_SIZE;
9540 if (!(ALWAYS_EMIT_R2SAVE
9541 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
9543 if (!htab->plt_static_chain)
9545 if (htab->plt_thread_safe)
9547 if (PPC_HA (off) == 0)
9549 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
9551 if (stub_entry->h != NULL
9552 && (stub_entry->h == htab->tls_get_addr_fd
9553 || stub_entry->h == htab->tls_get_addr)
9554 && !htab->no_tls_get_addr_opt)
9559 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9560 then return the padding needed to do so. */
9561 static inline unsigned int
9562 plt_stub_pad (struct ppc_link_hash_table *htab,
9563 struct ppc_stub_hash_entry *stub_entry,
9566 int stub_align = 1 << htab->plt_stub_align;
9567 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
9568 bfd_vma stub_off = stub_entry->stub_sec->size;
9570 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
9571 > (stub_size & -stub_align))
9572 return stub_align - (stub_off & (stub_align - 1));
9576 /* Build a .plt call stub. */
9578 static inline bfd_byte *
9579 build_plt_stub (struct ppc_link_hash_table *htab,
9580 struct ppc_stub_hash_entry *stub_entry,
9581 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9583 bfd *obfd = htab->stub_bfd;
9584 bfd_boolean plt_static_chain = htab->plt_static_chain;
9585 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
9586 bfd_boolean use_fake_dep = plt_thread_safe;
9587 bfd_vma cmp_branch_off = 0;
9589 if (!ALWAYS_USE_FAKE_DEP
9591 && !(stub_entry->h != NULL
9592 && (stub_entry->h == htab->tls_get_addr_fd
9593 || stub_entry->h == htab->tls_get_addr)
9594 && !htab->no_tls_get_addr_opt))
9596 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
9597 bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9598 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
9601 if (pltindex > 32767)
9602 glinkoff += (pltindex - 32767) * 4;
9604 + htab->glink->output_offset
9605 + htab->glink->output_section->vma);
9606 from = (p - stub_entry->stub_sec->contents
9607 + 4 * (ALWAYS_EMIT_R2SAVE
9608 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9609 + 4 * (PPC_HA (offset) != 0)
9610 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
9612 + 4 * (plt_static_chain != 0)
9614 + stub_entry->stub_sec->output_offset
9615 + stub_entry->stub_sec->output_section->vma);
9616 cmp_branch_off = to - from;
9617 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
9620 if (PPC_HA (offset) != 0)
9624 if (ALWAYS_EMIT_R2SAVE
9625 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9627 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9628 r[1].r_offset = r[0].r_offset + 4;
9629 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9630 r[1].r_addend = r[0].r_addend;
9631 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9633 r[2].r_offset = r[1].r_offset + 4;
9634 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9635 r[2].r_addend = r[0].r_addend;
9639 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
9640 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9641 r[2].r_addend = r[0].r_addend + 8;
9642 if (plt_static_chain)
9644 r[3].r_offset = r[2].r_offset + 4;
9645 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9646 r[3].r_addend = r[0].r_addend + 16;
9650 if (ALWAYS_EMIT_R2SAVE
9651 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9652 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9653 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9654 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9655 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9657 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9660 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9663 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9664 bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4;
9666 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9667 if (plt_static_chain)
9668 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9674 if (ALWAYS_EMIT_R2SAVE
9675 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9677 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9678 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9680 r[1].r_offset = r[0].r_offset + 4;
9681 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9682 r[1].r_addend = r[0].r_addend;
9686 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
9687 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9688 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
9689 if (plt_static_chain)
9691 r[2].r_offset = r[1].r_offset + 4;
9692 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9693 r[2].r_addend = r[0].r_addend + 8;
9697 if (ALWAYS_EMIT_R2SAVE
9698 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9699 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9700 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9701 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9703 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9706 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9709 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9710 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
9712 if (plt_static_chain)
9713 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9714 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9716 if (plt_thread_safe && !use_fake_dep)
9718 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
9719 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
9720 bfd_put_32 (obfd, B_DOT + cmp_branch_off, p), p += 4;
9723 bfd_put_32 (obfd, BCTR, p), p += 4;
9727 /* Build a special .plt call stub for __tls_get_addr. */
9729 #define LD_R11_0R3 0xe9630000
9730 #define LD_R12_0R3 0xe9830000
9731 #define MR_R0_R3 0x7c601b78
9732 #define CMPDI_R11_0 0x2c2b0000
9733 #define ADD_R3_R12_R13 0x7c6c6a14
9734 #define BEQLR 0x4d820020
9735 #define MR_R3_R0 0x7c030378
9736 #define MFLR_R11 0x7d6802a6
9737 #define STD_R11_0R1 0xf9610000
9738 #define BCTRL 0x4e800421
9739 #define LD_R11_0R1 0xe9610000
9740 #define LD_R2_0R1 0xe8410000
9741 #define MTLR_R11 0x7d6803a6
9743 static inline bfd_byte *
9744 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
9745 struct ppc_stub_hash_entry *stub_entry,
9746 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9748 bfd *obfd = htab->stub_bfd;
9750 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9751 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9752 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9753 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9754 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9755 bfd_put_32 (obfd, BEQLR, p), p += 4;
9756 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9757 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9758 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9761 r[0].r_offset += 9 * 4;
9762 p = build_plt_stub (htab, stub_entry, p, offset, r);
9763 bfd_put_32 (obfd, BCTRL, p - 4);
9765 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9766 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9767 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9768 bfd_put_32 (obfd, BLR, p), p += 4;
9773 static Elf_Internal_Rela *
9774 get_relocs (asection *sec, int count)
9776 Elf_Internal_Rela *relocs;
9777 struct bfd_elf_section_data *elfsec_data;
9779 elfsec_data = elf_section_data (sec);
9780 relocs = elfsec_data->relocs;
9783 bfd_size_type relsize;
9784 relsize = sec->reloc_count * sizeof (*relocs);
9785 relocs = bfd_alloc (sec->owner, relsize);
9788 elfsec_data->relocs = relocs;
9789 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9790 sizeof (Elf_Internal_Shdr));
9791 if (elfsec_data->rela.hdr == NULL)
9793 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9794 * sizeof (Elf64_External_Rela));
9795 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
9796 sec->reloc_count = 0;
9798 relocs += sec->reloc_count;
9799 sec->reloc_count += count;
9804 get_r2off (struct bfd_link_info *info,
9805 struct ppc_stub_hash_entry *stub_entry)
9807 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9808 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9812 /* Support linking -R objects. Get the toc pointer from the
9815 asection *opd = stub_entry->h->elf.root.u.def.section;
9816 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9818 if (strcmp (opd->name, ".opd") != 0
9819 || opd->reloc_count != 0)
9821 info->callbacks->einfo (_("%P: cannot find opd entry toc for %s\n"),
9822 stub_entry->h->elf.root.root.string);
9823 bfd_set_error (bfd_error_bad_value);
9826 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9828 r2off = bfd_get_64 (opd->owner, buf);
9829 r2off -= elf_gp (info->output_bfd);
9831 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9836 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9838 struct ppc_stub_hash_entry *stub_entry;
9839 struct ppc_branch_hash_entry *br_entry;
9840 struct bfd_link_info *info;
9841 struct ppc_link_hash_table *htab;
9846 Elf_Internal_Rela *r;
9849 /* Massage our args to the form they really have. */
9850 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9853 htab = ppc_hash_table (info);
9857 /* Make a note of the offset within the stubs for this entry. */
9858 stub_entry->stub_offset = stub_entry->stub_sec->size;
9859 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9861 htab->stub_count[stub_entry->stub_type - 1] += 1;
9862 switch (stub_entry->stub_type)
9864 case ppc_stub_long_branch:
9865 case ppc_stub_long_branch_r2off:
9866 /* Branches are relative. This is where we are going to. */
9867 off = dest = (stub_entry->target_value
9868 + stub_entry->target_section->output_offset
9869 + stub_entry->target_section->output_section->vma);
9871 /* And this is where we are coming from. */
9872 off -= (stub_entry->stub_offset
9873 + stub_entry->stub_sec->output_offset
9874 + stub_entry->stub_sec->output_section->vma);
9877 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9879 bfd_vma r2off = get_r2off (info, stub_entry);
9883 htab->stub_error = TRUE;
9886 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9889 if (PPC_HA (r2off) != 0)
9892 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9895 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9899 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9901 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9903 info->callbacks->einfo (_("%P: long branch stub `%s' offset overflow\n"),
9904 stub_entry->root.string);
9905 htab->stub_error = TRUE;
9909 if (info->emitrelocations)
9911 r = get_relocs (stub_entry->stub_sec, 1);
9914 r->r_offset = loc - stub_entry->stub_sec->contents;
9915 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9917 if (stub_entry->h != NULL)
9919 struct elf_link_hash_entry **hashes;
9920 unsigned long symndx;
9921 struct ppc_link_hash_entry *h;
9923 hashes = elf_sym_hashes (htab->stub_bfd);
9926 bfd_size_type hsize;
9928 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9929 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9932 elf_sym_hashes (htab->stub_bfd) = hashes;
9933 htab->stub_globals = 1;
9935 symndx = htab->stub_globals++;
9937 hashes[symndx] = &h->elf;
9938 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9939 if (h->oh != NULL && h->oh->is_func)
9940 h = ppc_follow_link (h->oh);
9941 if (h->elf.root.u.def.section != stub_entry->target_section)
9942 /* H is an opd symbol. The addend must be zero. */
9946 off = (h->elf.root.u.def.value
9947 + h->elf.root.u.def.section->output_offset
9948 + h->elf.root.u.def.section->output_section->vma);
9955 case ppc_stub_plt_branch:
9956 case ppc_stub_plt_branch_r2off:
9957 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9958 stub_entry->root.string + 9,
9960 if (br_entry == NULL)
9962 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
9963 stub_entry->root.string);
9964 htab->stub_error = TRUE;
9968 dest = (stub_entry->target_value
9969 + stub_entry->target_section->output_offset
9970 + stub_entry->target_section->output_section->vma);
9972 bfd_put_64 (htab->brlt->owner, dest,
9973 htab->brlt->contents + br_entry->offset);
9975 if (br_entry->iter == htab->stub_iteration)
9979 if (htab->relbrlt != NULL)
9981 /* Create a reloc for the branch lookup table entry. */
9982 Elf_Internal_Rela rela;
9985 rela.r_offset = (br_entry->offset
9986 + htab->brlt->output_offset
9987 + htab->brlt->output_section->vma);
9988 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9989 rela.r_addend = dest;
9991 rl = htab->relbrlt->contents;
9992 rl += (htab->relbrlt->reloc_count++
9993 * sizeof (Elf64_External_Rela));
9994 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9996 else if (info->emitrelocations)
9998 r = get_relocs (htab->brlt, 1);
10001 /* brlt, being SEC_LINKER_CREATED does not go through the
10002 normal reloc processing. Symbols and offsets are not
10003 translated from input file to output file form, so
10004 set up the offset per the output file. */
10005 r->r_offset = (br_entry->offset
10006 + htab->brlt->output_offset
10007 + htab->brlt->output_section->vma);
10008 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10009 r->r_addend = dest;
10013 dest = (br_entry->offset
10014 + htab->brlt->output_offset
10015 + htab->brlt->output_section->vma);
10018 - elf_gp (htab->brlt->output_section->owner)
10019 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10021 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10023 info->callbacks->einfo
10024 (_("%P: linkage table error against `%s'\n"),
10025 stub_entry->root.string);
10026 bfd_set_error (bfd_error_bad_value);
10027 htab->stub_error = TRUE;
10031 if (info->emitrelocations)
10033 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10036 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10037 if (bfd_big_endian (info->output_bfd))
10038 r[0].r_offset += 2;
10039 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10040 r[0].r_offset += 4;
10041 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10042 r[0].r_addend = dest;
10043 if (PPC_HA (off) != 0)
10045 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10046 r[1].r_offset = r[0].r_offset + 4;
10047 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10048 r[1].r_addend = r[0].r_addend;
10052 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10054 if (PPC_HA (off) != 0)
10057 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10059 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10064 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10069 bfd_vma r2off = get_r2off (info, stub_entry);
10073 htab->stub_error = TRUE;
10077 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10080 if (PPC_HA (off) != 0)
10083 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10085 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10090 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10094 if (PPC_HA (r2off) != 0)
10097 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10100 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10103 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
10105 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10108 case ppc_stub_plt_call:
10109 case ppc_stub_plt_call_r2save:
10110 if (stub_entry->h != NULL
10111 && stub_entry->h->is_func_descriptor
10112 && stub_entry->h->oh != NULL)
10114 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10116 /* If the old-ABI "dot-symbol" is undefined make it weak so
10117 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10118 FIXME: We used to define the symbol on one of the call
10119 stubs instead, which is why we test symbol section id
10120 against htab->top_id in various places. Likely all
10121 these checks could now disappear. */
10122 if (fh->elf.root.type == bfd_link_hash_undefined)
10123 fh->elf.root.type = bfd_link_hash_undefweak;
10124 /* Stop undo_symbol_twiddle changing it back to undefined. */
10125 fh->was_undefined = 0;
10128 /* Now build the stub. */
10129 dest = stub_entry->plt_ent->plt.offset & ~1;
10130 if (dest >= (bfd_vma) -2)
10134 if (!htab->elf.dynamic_sections_created
10135 || stub_entry->h == NULL
10136 || stub_entry->h->elf.dynindx == -1)
10139 dest += plt->output_offset + plt->output_section->vma;
10141 if (stub_entry->h == NULL
10142 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10144 Elf_Internal_Rela rela;
10147 rela.r_offset = dest;
10148 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10149 rela.r_addend = (stub_entry->target_value
10150 + stub_entry->target_section->output_offset
10151 + stub_entry->target_section->output_section->vma);
10153 rl = (htab->reliplt->contents
10154 + (htab->reliplt->reloc_count++
10155 * sizeof (Elf64_External_Rela)));
10156 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10157 stub_entry->plt_ent->plt.offset |= 1;
10161 - elf_gp (plt->output_section->owner)
10162 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10164 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10166 info->callbacks->einfo
10167 (_("%P: linkage table error against `%s'\n"),
10168 stub_entry->h != NULL
10169 ? stub_entry->h->elf.root.root.string
10171 bfd_set_error (bfd_error_bad_value);
10172 htab->stub_error = TRUE;
10176 if (htab->plt_stub_align != 0)
10178 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10180 stub_entry->stub_sec->size += pad;
10181 stub_entry->stub_offset = stub_entry->stub_sec->size;
10186 if (info->emitrelocations)
10188 r = get_relocs (stub_entry->stub_sec,
10190 + (PPC_HA (off) != 0)
10191 + (htab->plt_static_chain
10192 && PPC_HA (off + 16) == PPC_HA (off))));
10195 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10196 if (bfd_big_endian (info->output_bfd))
10197 r[0].r_offset += 2;
10198 r[0].r_addend = dest;
10200 if (stub_entry->h != NULL
10201 && (stub_entry->h == htab->tls_get_addr_fd
10202 || stub_entry->h == htab->tls_get_addr)
10203 && !htab->no_tls_get_addr_opt)
10204 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10206 p = build_plt_stub (htab, stub_entry, loc, off, r);
10215 stub_entry->stub_sec->size += size;
10217 if (htab->emit_stub_syms)
10219 struct elf_link_hash_entry *h;
10222 const char *const stub_str[] = { "long_branch",
10223 "long_branch_r2off",
10225 "plt_branch_r2off",
10229 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10230 len2 = strlen (stub_entry->root.string);
10231 name = bfd_malloc (len1 + len2 + 2);
10234 memcpy (name, stub_entry->root.string, 9);
10235 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10236 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10237 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10240 if (h->root.type == bfd_link_hash_new)
10242 h->root.type = bfd_link_hash_defined;
10243 h->root.u.def.section = stub_entry->stub_sec;
10244 h->root.u.def.value = stub_entry->stub_offset;
10245 h->ref_regular = 1;
10246 h->def_regular = 1;
10247 h->ref_regular_nonweak = 1;
10248 h->forced_local = 1;
10256 /* As above, but don't actually build the stub. Just bump offset so
10257 we know stub section sizes, and select plt_branch stubs where
10258 long_branch stubs won't do. */
10261 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10263 struct ppc_stub_hash_entry *stub_entry;
10264 struct bfd_link_info *info;
10265 struct ppc_link_hash_table *htab;
10269 /* Massage our args to the form they really have. */
10270 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10273 htab = ppc_hash_table (info);
10277 if (stub_entry->stub_type == ppc_stub_plt_call
10278 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10281 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10282 if (off >= (bfd_vma) -2)
10285 if (!htab->elf.dynamic_sections_created
10286 || stub_entry->h == NULL
10287 || stub_entry->h->elf.dynindx == -1)
10289 off += (plt->output_offset
10290 + plt->output_section->vma
10291 - elf_gp (plt->output_section->owner)
10292 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10294 size = plt_stub_size (htab, stub_entry, off);
10295 if (htab->plt_stub_align)
10296 size += plt_stub_pad (htab, stub_entry, off);
10297 if (info->emitrelocations)
10299 stub_entry->stub_sec->reloc_count
10301 + (PPC_HA (off) != 0)
10302 + (htab->plt_static_chain
10303 && PPC_HA (off + 16) == PPC_HA (off)));
10304 stub_entry->stub_sec->flags |= SEC_RELOC;
10309 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10313 off = (stub_entry->target_value
10314 + stub_entry->target_section->output_offset
10315 + stub_entry->target_section->output_section->vma);
10316 off -= (stub_entry->stub_sec->size
10317 + stub_entry->stub_sec->output_offset
10318 + stub_entry->stub_sec->output_section->vma);
10320 /* Reset the stub type from the plt variant in case we now
10321 can reach with a shorter stub. */
10322 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10323 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10326 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10328 r2off = get_r2off (info, stub_entry);
10331 htab->stub_error = TRUE;
10335 if (PPC_HA (r2off) != 0)
10340 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10341 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10343 struct ppc_branch_hash_entry *br_entry;
10345 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10346 stub_entry->root.string + 9,
10348 if (br_entry == NULL)
10350 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10351 stub_entry->root.string);
10352 htab->stub_error = TRUE;
10356 if (br_entry->iter != htab->stub_iteration)
10358 br_entry->iter = htab->stub_iteration;
10359 br_entry->offset = htab->brlt->size;
10360 htab->brlt->size += 8;
10362 if (htab->relbrlt != NULL)
10363 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10364 else if (info->emitrelocations)
10366 htab->brlt->reloc_count += 1;
10367 htab->brlt->flags |= SEC_RELOC;
10371 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10372 off = (br_entry->offset
10373 + htab->brlt->output_offset
10374 + htab->brlt->output_section->vma
10375 - elf_gp (htab->brlt->output_section->owner)
10376 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10378 if (info->emitrelocations)
10380 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10381 stub_entry->stub_sec->flags |= SEC_RELOC;
10384 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10387 if (PPC_HA (off) != 0)
10393 if (PPC_HA (off) != 0)
10396 if (PPC_HA (r2off) != 0)
10400 else if (info->emitrelocations)
10402 stub_entry->stub_sec->reloc_count += 1;
10403 stub_entry->stub_sec->flags |= SEC_RELOC;
10407 stub_entry->stub_sec->size += size;
10411 /* Set up various things so that we can make a list of input sections
10412 for each output section included in the link. Returns -1 on error,
10413 0 when no stubs will be needed, and 1 on success. */
10416 ppc64_elf_setup_section_lists
10417 (struct bfd_link_info *info,
10418 asection *(*add_stub_section) (const char *, asection *),
10419 void (*layout_sections_again) (void))
10422 int top_id, top_index, id;
10424 asection **input_list;
10426 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10430 /* Stash our params away. */
10431 htab->add_stub_section = add_stub_section;
10432 htab->layout_sections_again = layout_sections_again;
10434 if (htab->brlt == NULL)
10437 /* Find the top input section id. */
10438 for (input_bfd = info->input_bfds, top_id = 3;
10440 input_bfd = input_bfd->link_next)
10442 for (section = input_bfd->sections;
10444 section = section->next)
10446 if (top_id < section->id)
10447 top_id = section->id;
10451 htab->top_id = top_id;
10452 amt = sizeof (struct map_stub) * (top_id + 1);
10453 htab->stub_group = bfd_zmalloc (amt);
10454 if (htab->stub_group == NULL)
10457 /* Set toc_off for com, und, abs and ind sections. */
10458 for (id = 0; id < 3; id++)
10459 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10461 /* We can't use output_bfd->section_count here to find the top output
10462 section index as some sections may have been removed, and
10463 strip_excluded_output_sections doesn't renumber the indices. */
10464 for (section = info->output_bfd->sections, top_index = 0;
10466 section = section->next)
10468 if (top_index < section->index)
10469 top_index = section->index;
10472 htab->top_index = top_index;
10473 amt = sizeof (asection *) * (top_index + 1);
10474 input_list = bfd_zmalloc (amt);
10475 htab->input_list = input_list;
10476 if (input_list == NULL)
10482 /* Set up for first pass at multitoc partitioning. */
10485 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10487 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10489 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10490 htab->toc_curr = elf_gp (info->output_bfd);
10491 htab->toc_bfd = NULL;
10492 htab->toc_first_sec = NULL;
10495 /* The linker repeatedly calls this function for each TOC input section
10496 and linker generated GOT section. Group input bfds such that the toc
10497 within a group is less than 64k in size. */
10500 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10502 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10503 bfd_vma addr, off, limit;
10508 if (!htab->second_toc_pass)
10510 /* Keep track of the first .toc or .got section for this input bfd. */
10511 if (htab->toc_bfd != isec->owner)
10513 htab->toc_bfd = isec->owner;
10514 htab->toc_first_sec = isec;
10517 addr = isec->output_offset + isec->output_section->vma;
10518 off = addr - htab->toc_curr;
10519 limit = 0x80008000;
10520 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10522 if (off + isec->size > limit)
10524 addr = (htab->toc_first_sec->output_offset
10525 + htab->toc_first_sec->output_section->vma);
10526 htab->toc_curr = addr;
10529 /* toc_curr is the base address of this toc group. Set elf_gp
10530 for the input section to be the offset relative to the
10531 output toc base plus 0x8000. Making the input elf_gp an
10532 offset allows us to move the toc as a whole without
10533 recalculating input elf_gp. */
10534 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10535 off += TOC_BASE_OFF;
10537 /* Die if someone uses a linker script that doesn't keep input
10538 file .toc and .got together. */
10539 if (elf_gp (isec->owner) != 0
10540 && elf_gp (isec->owner) != off)
10543 elf_gp (isec->owner) = off;
10547 /* During the second pass toc_first_sec points to the start of
10548 a toc group, and toc_curr is used to track the old elf_gp.
10549 We use toc_bfd to ensure we only look at each bfd once. */
10550 if (htab->toc_bfd == isec->owner)
10552 htab->toc_bfd = isec->owner;
10554 if (htab->toc_first_sec == NULL
10555 || htab->toc_curr != elf_gp (isec->owner))
10557 htab->toc_curr = elf_gp (isec->owner);
10558 htab->toc_first_sec = isec;
10560 addr = (htab->toc_first_sec->output_offset
10561 + htab->toc_first_sec->output_section->vma);
10562 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10563 elf_gp (isec->owner) = off;
10568 /* Called via elf_link_hash_traverse to merge GOT entries for global
10572 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10574 if (h->root.type == bfd_link_hash_indirect)
10577 merge_got_entries (&h->got.glist);
10582 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10586 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10588 struct got_entry *gent;
10590 if (h->root.type == bfd_link_hash_indirect)
10593 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10594 if (!gent->is_indirect)
10595 allocate_got (h, (struct bfd_link_info *) inf, gent);
10599 /* Called on the first multitoc pass after the last call to
10600 ppc64_elf_next_toc_section. This function removes duplicate GOT
10604 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10606 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10607 struct bfd *ibfd, *ibfd2;
10608 bfd_boolean done_something;
10610 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10612 if (!htab->do_multi_toc)
10615 /* Merge global sym got entries within a toc group. */
10616 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10618 /* And tlsld_got. */
10619 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10621 struct got_entry *ent, *ent2;
10623 if (!is_ppc64_elf (ibfd))
10626 ent = ppc64_tlsld_got (ibfd);
10627 if (!ent->is_indirect
10628 && ent->got.offset != (bfd_vma) -1)
10630 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10632 if (!is_ppc64_elf (ibfd2))
10635 ent2 = ppc64_tlsld_got (ibfd2);
10636 if (!ent2->is_indirect
10637 && ent2->got.offset != (bfd_vma) -1
10638 && elf_gp (ibfd2) == elf_gp (ibfd))
10640 ent2->is_indirect = TRUE;
10641 ent2->got.ent = ent;
10647 /* Zap sizes of got sections. */
10648 htab->reliplt->rawsize = htab->reliplt->size;
10649 htab->reliplt->size -= htab->got_reli_size;
10650 htab->got_reli_size = 0;
10652 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10654 asection *got, *relgot;
10656 if (!is_ppc64_elf (ibfd))
10659 got = ppc64_elf_tdata (ibfd)->got;
10662 got->rawsize = got->size;
10664 relgot = ppc64_elf_tdata (ibfd)->relgot;
10665 relgot->rawsize = relgot->size;
10670 /* Now reallocate the got, local syms first. We don't need to
10671 allocate section contents again since we never increase size. */
10672 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10674 struct got_entry **lgot_ents;
10675 struct got_entry **end_lgot_ents;
10676 struct plt_entry **local_plt;
10677 struct plt_entry **end_local_plt;
10678 unsigned char *lgot_masks;
10679 bfd_size_type locsymcount;
10680 Elf_Internal_Shdr *symtab_hdr;
10681 asection *s, *srel;
10683 if (!is_ppc64_elf (ibfd))
10686 lgot_ents = elf_local_got_ents (ibfd);
10690 symtab_hdr = &elf_symtab_hdr (ibfd);
10691 locsymcount = symtab_hdr->sh_info;
10692 end_lgot_ents = lgot_ents + locsymcount;
10693 local_plt = (struct plt_entry **) end_lgot_ents;
10694 end_local_plt = local_plt + locsymcount;
10695 lgot_masks = (unsigned char *) end_local_plt;
10696 s = ppc64_elf_tdata (ibfd)->got;
10697 srel = ppc64_elf_tdata (ibfd)->relgot;
10698 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10700 struct got_entry *ent;
10702 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10704 unsigned int num = 1;
10705 ent->got.offset = s->size;
10706 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10708 s->size += num * 8;
10710 srel->size += num * sizeof (Elf64_External_Rela);
10711 else if ((*lgot_masks & PLT_IFUNC) != 0)
10713 htab->reliplt->size
10714 += num * sizeof (Elf64_External_Rela);
10715 htab->got_reli_size
10716 += num * sizeof (Elf64_External_Rela);
10722 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10724 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10726 struct got_entry *ent;
10728 if (!is_ppc64_elf (ibfd))
10731 ent = ppc64_tlsld_got (ibfd);
10732 if (!ent->is_indirect
10733 && ent->got.offset != (bfd_vma) -1)
10735 asection *s = ppc64_elf_tdata (ibfd)->got;
10736 ent->got.offset = s->size;
10740 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10741 srel->size += sizeof (Elf64_External_Rela);
10746 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10747 if (!done_something)
10748 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10752 if (!is_ppc64_elf (ibfd))
10755 got = ppc64_elf_tdata (ibfd)->got;
10758 done_something = got->rawsize != got->size;
10759 if (done_something)
10764 if (done_something)
10765 (*htab->layout_sections_again) ();
10767 /* Set up for second pass over toc sections to recalculate elf_gp
10768 on input sections. */
10769 htab->toc_bfd = NULL;
10770 htab->toc_first_sec = NULL;
10771 htab->second_toc_pass = TRUE;
10772 return done_something;
10775 /* Called after second pass of multitoc partitioning. */
10778 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10780 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10782 /* After the second pass, toc_curr tracks the TOC offset used
10783 for code sections below in ppc64_elf_next_input_section. */
10784 htab->toc_curr = TOC_BASE_OFF;
10787 /* No toc references were found in ISEC. If the code in ISEC makes no
10788 calls, then there's no need to use toc adjusting stubs when branching
10789 into ISEC. Actually, indirect calls from ISEC are OK as they will
10790 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10791 needed, and 2 if a cyclical call-graph was found but no other reason
10792 for a stub was detected. If called from the top level, a return of
10793 2 means the same as a return of 0. */
10796 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10800 /* Mark this section as checked. */
10801 isec->call_check_done = 1;
10803 /* We know none of our code bearing sections will need toc stubs. */
10804 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10807 if (isec->size == 0)
10810 if (isec->output_section == NULL)
10814 if (isec->reloc_count != 0)
10816 Elf_Internal_Rela *relstart, *rel;
10817 Elf_Internal_Sym *local_syms;
10818 struct ppc_link_hash_table *htab;
10820 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10821 info->keep_memory);
10822 if (relstart == NULL)
10825 /* Look for branches to outside of this section. */
10827 htab = ppc_hash_table (info);
10831 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10833 enum elf_ppc64_reloc_type r_type;
10834 unsigned long r_symndx;
10835 struct elf_link_hash_entry *h;
10836 struct ppc_link_hash_entry *eh;
10837 Elf_Internal_Sym *sym;
10839 struct _opd_sec_data *opd;
10843 r_type = ELF64_R_TYPE (rel->r_info);
10844 if (r_type != R_PPC64_REL24
10845 && r_type != R_PPC64_REL14
10846 && r_type != R_PPC64_REL14_BRTAKEN
10847 && r_type != R_PPC64_REL14_BRNTAKEN)
10850 r_symndx = ELF64_R_SYM (rel->r_info);
10851 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10858 /* Calls to dynamic lib functions go through a plt call stub
10860 eh = (struct ppc_link_hash_entry *) h;
10862 && (eh->elf.plt.plist != NULL
10864 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10870 if (sym_sec == NULL)
10871 /* Ignore other undefined symbols. */
10874 /* Assume branches to other sections not included in the
10875 link need stubs too, to cover -R and absolute syms. */
10876 if (sym_sec->output_section == NULL)
10883 sym_value = sym->st_value;
10886 if (h->root.type != bfd_link_hash_defined
10887 && h->root.type != bfd_link_hash_defweak)
10889 sym_value = h->root.u.def.value;
10891 sym_value += rel->r_addend;
10893 /* If this branch reloc uses an opd sym, find the code section. */
10894 opd = get_opd_info (sym_sec);
10897 if (h == NULL && opd->adjust != NULL)
10901 adjust = opd->adjust[sym->st_value / 8];
10903 /* Assume deleted functions won't ever be called. */
10905 sym_value += adjust;
10908 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10909 if (dest == (bfd_vma) -1)
10914 + sym_sec->output_offset
10915 + sym_sec->output_section->vma);
10917 /* Ignore branch to self. */
10918 if (sym_sec == isec)
10921 /* If the called function uses the toc, we need a stub. */
10922 if (sym_sec->has_toc_reloc
10923 || sym_sec->makes_toc_func_call)
10929 /* Assume any branch that needs a long branch stub might in fact
10930 need a plt_branch stub. A plt_branch stub uses r2. */
10931 else if (dest - (isec->output_offset
10932 + isec->output_section->vma
10933 + rel->r_offset) + (1 << 25) >= (2 << 25))
10939 /* If calling back to a section in the process of being
10940 tested, we can't say for sure that no toc adjusting stubs
10941 are needed, so don't return zero. */
10942 else if (sym_sec->call_check_in_progress)
10945 /* Branches to another section that itself doesn't have any TOC
10946 references are OK. Recursively call ourselves to check. */
10947 else if (!sym_sec->call_check_done)
10951 /* Mark current section as indeterminate, so that other
10952 sections that call back to current won't be marked as
10954 isec->call_check_in_progress = 1;
10955 recur = toc_adjusting_stub_needed (info, sym_sec);
10956 isec->call_check_in_progress = 0;
10967 if (local_syms != NULL
10968 && (elf_symtab_hdr (isec->owner).contents
10969 != (unsigned char *) local_syms))
10971 if (elf_section_data (isec)->relocs != relstart)
10976 && isec->map_head.s != NULL
10977 && (strcmp (isec->output_section->name, ".init") == 0
10978 || strcmp (isec->output_section->name, ".fini") == 0))
10980 if (isec->map_head.s->has_toc_reloc
10981 || isec->map_head.s->makes_toc_func_call)
10983 else if (!isec->map_head.s->call_check_done)
10986 isec->call_check_in_progress = 1;
10987 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
10988 isec->call_check_in_progress = 0;
10995 isec->makes_toc_func_call = 1;
11000 /* The linker repeatedly calls this function for each input section,
11001 in the order that input sections are linked into output sections.
11002 Build lists of input sections to determine groupings between which
11003 we may insert linker stubs. */
11006 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11008 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11013 if ((isec->output_section->flags & SEC_CODE) != 0
11014 && isec->output_section->index <= htab->top_index)
11016 asection **list = htab->input_list + isec->output_section->index;
11017 /* Steal the link_sec pointer for our list. */
11018 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11019 /* This happens to make the list in reverse order,
11020 which is what we want. */
11021 PREV_SEC (isec) = *list;
11025 if (htab->multi_toc_needed)
11027 /* If a code section has a function that uses the TOC then we need
11028 to use the right TOC (obviously). Also, make sure that .opd gets
11029 the correct TOC value for R_PPC64_TOC relocs that don't have or
11030 can't find their function symbol (shouldn't ever happen now).
11031 Also specially treat .fixup for the linux kernel. .fixup
11032 contains branches, but only back to the function that hit an
11034 if (isec->has_toc_reloc
11035 || (isec->flags & SEC_CODE) == 0
11036 || strcmp (isec->name, ".fixup") == 0)
11038 if (elf_gp (isec->owner) != 0)
11039 htab->toc_curr = elf_gp (isec->owner);
11043 if (!isec->call_check_done
11044 && toc_adjusting_stub_needed (info, isec) < 0)
11046 /* If we make a local call from this section, ie. a branch
11047 without a following nop, then we have no place to put a
11048 toc restoring insn. We must use the same toc group as
11050 Testing makes_toc_func_call actually tests for *any*
11051 calls to functions that need a good toc pointer. A more
11052 precise test would be better, as this one will set
11053 incorrect values for pasted .init/.fini fragments.
11054 (Fixed later in check_pasted_section.) */
11055 if (isec->makes_toc_func_call
11056 && elf_gp (isec->owner) != 0)
11057 htab->toc_curr = elf_gp (isec->owner);
11061 /* Functions that don't use the TOC can belong in any TOC group.
11062 Use the last TOC base. */
11063 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11067 /* Check that all .init and .fini sections use the same toc, if they
11068 have toc relocs. */
11071 check_pasted_section (struct bfd_link_info *info, const char *name)
11073 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11077 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11078 bfd_vma toc_off = 0;
11081 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11082 if (i->has_toc_reloc)
11085 toc_off = htab->stub_group[i->id].toc_off;
11086 else if (toc_off != htab->stub_group[i->id].toc_off)
11091 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11092 if (i->makes_toc_func_call)
11094 toc_off = htab->stub_group[i->id].toc_off;
11098 /* Make sure the whole pasted function uses the same toc offset. */
11100 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11101 htab->stub_group[i->id].toc_off = toc_off;
11107 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11109 return (check_pasted_section (info, ".init")
11110 & check_pasted_section (info, ".fini"));
11113 /* See whether we can group stub sections together. Grouping stub
11114 sections may result in fewer stubs. More importantly, we need to
11115 put all .init* and .fini* stubs at the beginning of the .init or
11116 .fini output sections respectively, because glibc splits the
11117 _init and _fini functions into multiple parts. Putting a stub in
11118 the middle of a function is not a good idea. */
11121 group_sections (struct ppc_link_hash_table *htab,
11122 bfd_size_type stub_group_size,
11123 bfd_boolean stubs_always_before_branch)
11126 bfd_size_type stub14_group_size;
11127 bfd_boolean suppress_size_errors;
11129 suppress_size_errors = FALSE;
11130 stub14_group_size = stub_group_size;
11131 if (stub_group_size == 1)
11133 /* Default values. */
11134 if (stubs_always_before_branch)
11136 stub_group_size = 0x1e00000;
11137 stub14_group_size = 0x7800;
11141 stub_group_size = 0x1c00000;
11142 stub14_group_size = 0x7000;
11144 suppress_size_errors = TRUE;
11147 list = htab->input_list + htab->top_index;
11150 asection *tail = *list;
11151 while (tail != NULL)
11155 bfd_size_type total;
11156 bfd_boolean big_sec;
11160 total = tail->size;
11161 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11162 && ppc64_elf_section_data (tail)->has_14bit_branch
11163 ? stub14_group_size : stub_group_size);
11164 if (big_sec && !suppress_size_errors)
11165 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11166 tail->owner, tail);
11167 curr_toc = htab->stub_group[tail->id].toc_off;
11169 while ((prev = PREV_SEC (curr)) != NULL
11170 && ((total += curr->output_offset - prev->output_offset)
11171 < (ppc64_elf_section_data (prev) != NULL
11172 && ppc64_elf_section_data (prev)->has_14bit_branch
11173 ? stub14_group_size : stub_group_size))
11174 && htab->stub_group[prev->id].toc_off == curr_toc)
11177 /* OK, the size from the start of CURR to the end is less
11178 than stub_group_size and thus can be handled by one stub
11179 section. (or the tail section is itself larger than
11180 stub_group_size, in which case we may be toast.) We
11181 should really be keeping track of the total size of stubs
11182 added here, as stubs contribute to the final output
11183 section size. That's a little tricky, and this way will
11184 only break if stubs added make the total size more than
11185 2^25, ie. for the default stub_group_size, if stubs total
11186 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11189 prev = PREV_SEC (tail);
11190 /* Set up this stub group. */
11191 htab->stub_group[tail->id].link_sec = curr;
11193 while (tail != curr && (tail = prev) != NULL);
11195 /* But wait, there's more! Input sections up to stub_group_size
11196 bytes before the stub section can be handled by it too.
11197 Don't do this if we have a really large section after the
11198 stubs, as adding more stubs increases the chance that
11199 branches may not reach into the stub section. */
11200 if (!stubs_always_before_branch && !big_sec)
11203 while (prev != NULL
11204 && ((total += tail->output_offset - prev->output_offset)
11205 < (ppc64_elf_section_data (prev) != NULL
11206 && ppc64_elf_section_data (prev)->has_14bit_branch
11207 ? stub14_group_size : stub_group_size))
11208 && htab->stub_group[prev->id].toc_off == curr_toc)
11211 prev = PREV_SEC (tail);
11212 htab->stub_group[tail->id].link_sec = curr;
11218 while (list-- != htab->input_list);
11219 free (htab->input_list);
11223 static const unsigned char glink_eh_frame_cie[] =
11225 0, 0, 0, 16, /* length. */
11226 0, 0, 0, 0, /* id. */
11227 1, /* CIE version. */
11228 'z', 'R', 0, /* Augmentation string. */
11229 4, /* Code alignment. */
11230 0x78, /* Data alignment. */
11232 1, /* Augmentation size. */
11233 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11234 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11237 /* Stripping output sections is normally done before dynamic section
11238 symbols have been allocated. This function is called later, and
11239 handles cases like htab->brlt which is mapped to its own output
11243 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11245 if (isec->size == 0
11246 && isec->output_section->size == 0
11247 && !bfd_section_removed_from_list (info->output_bfd,
11248 isec->output_section)
11249 && elf_section_data (isec->output_section)->dynindx == 0)
11251 isec->output_section->flags |= SEC_EXCLUDE;
11252 bfd_section_list_remove (info->output_bfd, isec->output_section);
11253 info->output_bfd->section_count--;
11257 /* Determine and set the size of the stub section for a final link.
11259 The basic idea here is to examine all the relocations looking for
11260 PC-relative calls to a target that is unreachable with a "bl"
11264 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11265 bfd_boolean plt_static_chain, int plt_thread_safe,
11266 int plt_stub_align)
11268 bfd_size_type stub_group_size;
11269 bfd_boolean stubs_always_before_branch;
11270 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11275 htab->plt_static_chain = plt_static_chain;
11276 htab->plt_stub_align = plt_stub_align;
11277 if (plt_thread_safe == -1)
11279 const char *const thread_starter[] =
11283 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11285 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11286 "mq_notify", "create_timer",
11290 "GOMP_parallel_start",
11291 "GOMP_parallel_loop_static_start",
11292 "GOMP_parallel_loop_dynamic_start",
11293 "GOMP_parallel_loop_guided_start",
11294 "GOMP_parallel_loop_runtime_start",
11295 "GOMP_parallel_sections_start",
11299 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11301 struct elf_link_hash_entry *h;
11302 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11303 FALSE, FALSE, TRUE);
11304 plt_thread_safe = h != NULL && h->ref_regular;
11305 if (plt_thread_safe)
11309 htab->plt_thread_safe = plt_thread_safe;
11310 stubs_always_before_branch = group_size < 0;
11311 if (group_size < 0)
11312 stub_group_size = -group_size;
11314 stub_group_size = group_size;
11316 group_sections (htab, stub_group_size, stubs_always_before_branch);
11321 unsigned int bfd_indx;
11322 asection *stub_sec;
11324 htab->stub_iteration += 1;
11326 for (input_bfd = info->input_bfds, bfd_indx = 0;
11328 input_bfd = input_bfd->link_next, bfd_indx++)
11330 Elf_Internal_Shdr *symtab_hdr;
11332 Elf_Internal_Sym *local_syms = NULL;
11334 if (!is_ppc64_elf (input_bfd))
11337 /* We'll need the symbol table in a second. */
11338 symtab_hdr = &elf_symtab_hdr (input_bfd);
11339 if (symtab_hdr->sh_info == 0)
11342 /* Walk over each section attached to the input bfd. */
11343 for (section = input_bfd->sections;
11345 section = section->next)
11347 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11349 /* If there aren't any relocs, then there's nothing more
11351 if ((section->flags & SEC_RELOC) == 0
11352 || (section->flags & SEC_ALLOC) == 0
11353 || (section->flags & SEC_LOAD) == 0
11354 || (section->flags & SEC_CODE) == 0
11355 || section->reloc_count == 0)
11358 /* If this section is a link-once section that will be
11359 discarded, then don't create any stubs. */
11360 if (section->output_section == NULL
11361 || section->output_section->owner != info->output_bfd)
11364 /* Get the relocs. */
11366 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11367 info->keep_memory);
11368 if (internal_relocs == NULL)
11369 goto error_ret_free_local;
11371 /* Now examine each relocation. */
11372 irela = internal_relocs;
11373 irelaend = irela + section->reloc_count;
11374 for (; irela < irelaend; irela++)
11376 enum elf_ppc64_reloc_type r_type;
11377 unsigned int r_indx;
11378 enum ppc_stub_type stub_type;
11379 struct ppc_stub_hash_entry *stub_entry;
11380 asection *sym_sec, *code_sec;
11381 bfd_vma sym_value, code_value;
11382 bfd_vma destination;
11383 bfd_boolean ok_dest;
11384 struct ppc_link_hash_entry *hash;
11385 struct ppc_link_hash_entry *fdh;
11386 struct elf_link_hash_entry *h;
11387 Elf_Internal_Sym *sym;
11389 const asection *id_sec;
11390 struct _opd_sec_data *opd;
11391 struct plt_entry *plt_ent;
11393 r_type = ELF64_R_TYPE (irela->r_info);
11394 r_indx = ELF64_R_SYM (irela->r_info);
11396 if (r_type >= R_PPC64_max)
11398 bfd_set_error (bfd_error_bad_value);
11399 goto error_ret_free_internal;
11402 /* Only look for stubs on branch instructions. */
11403 if (r_type != R_PPC64_REL24
11404 && r_type != R_PPC64_REL14
11405 && r_type != R_PPC64_REL14_BRTAKEN
11406 && r_type != R_PPC64_REL14_BRNTAKEN)
11409 /* Now determine the call target, its name, value,
11411 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11412 r_indx, input_bfd))
11413 goto error_ret_free_internal;
11414 hash = (struct ppc_link_hash_entry *) h;
11421 sym_value = sym->st_value;
11424 else if (hash->elf.root.type == bfd_link_hash_defined
11425 || hash->elf.root.type == bfd_link_hash_defweak)
11427 sym_value = hash->elf.root.u.def.value;
11428 if (sym_sec->output_section != NULL)
11431 else if (hash->elf.root.type == bfd_link_hash_undefweak
11432 || hash->elf.root.type == bfd_link_hash_undefined)
11434 /* Recognise an old ABI func code entry sym, and
11435 use the func descriptor sym instead if it is
11437 if (hash->elf.root.root.string[0] == '.'
11438 && (fdh = lookup_fdh (hash, htab)) != NULL)
11440 if (fdh->elf.root.type == bfd_link_hash_defined
11441 || fdh->elf.root.type == bfd_link_hash_defweak)
11443 sym_sec = fdh->elf.root.u.def.section;
11444 sym_value = fdh->elf.root.u.def.value;
11445 if (sym_sec->output_section != NULL)
11454 bfd_set_error (bfd_error_bad_value);
11455 goto error_ret_free_internal;
11461 sym_value += irela->r_addend;
11462 destination = (sym_value
11463 + sym_sec->output_offset
11464 + sym_sec->output_section->vma);
11467 code_sec = sym_sec;
11468 code_value = sym_value;
11469 opd = get_opd_info (sym_sec);
11474 if (hash == NULL && opd->adjust != NULL)
11476 long adjust = opd->adjust[sym_value / 8];
11479 code_value += adjust;
11480 sym_value += adjust;
11482 dest = opd_entry_value (sym_sec, sym_value,
11483 &code_sec, &code_value);
11484 if (dest != (bfd_vma) -1)
11486 destination = dest;
11489 /* Fixup old ABI sym to point at code
11491 hash->elf.root.type = bfd_link_hash_defweak;
11492 hash->elf.root.u.def.section = code_sec;
11493 hash->elf.root.u.def.value = code_value;
11498 /* Determine what (if any) linker stub is needed. */
11500 stub_type = ppc_type_of_stub (section, irela, &hash,
11501 &plt_ent, destination);
11503 if (stub_type != ppc_stub_plt_call)
11505 /* Check whether we need a TOC adjusting stub.
11506 Since the linker pastes together pieces from
11507 different object files when creating the
11508 _init and _fini functions, it may be that a
11509 call to what looks like a local sym is in
11510 fact a call needing a TOC adjustment. */
11511 if (code_sec != NULL
11512 && code_sec->output_section != NULL
11513 && (htab->stub_group[code_sec->id].toc_off
11514 != htab->stub_group[section->id].toc_off)
11515 && (code_sec->has_toc_reloc
11516 || code_sec->makes_toc_func_call))
11517 stub_type = ppc_stub_long_branch_r2off;
11520 if (stub_type == ppc_stub_none)
11523 /* __tls_get_addr calls might be eliminated. */
11524 if (stub_type != ppc_stub_plt_call
11526 && (hash == htab->tls_get_addr
11527 || hash == htab->tls_get_addr_fd)
11528 && section->has_tls_reloc
11529 && irela != internal_relocs)
11531 /* Get tls info. */
11532 unsigned char *tls_mask;
11534 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11535 irela - 1, input_bfd))
11536 goto error_ret_free_internal;
11537 if (*tls_mask != 0)
11541 if (stub_type == ppc_stub_plt_call
11542 && irela + 1 < irelaend
11543 && irela[1].r_offset == irela->r_offset + 4
11544 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
11546 if (!tocsave_find (htab, INSERT,
11547 &local_syms, irela + 1, input_bfd))
11548 goto error_ret_free_internal;
11550 else if (stub_type == ppc_stub_plt_call)
11551 stub_type = ppc_stub_plt_call_r2save;
11553 /* Support for grouping stub sections. */
11554 id_sec = htab->stub_group[section->id].link_sec;
11556 /* Get the name of this stub. */
11557 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11559 goto error_ret_free_internal;
11561 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11562 stub_name, FALSE, FALSE);
11563 if (stub_entry != NULL)
11565 /* The proper stub has already been created. */
11567 if (stub_type == ppc_stub_plt_call_r2save)
11568 stub_entry->stub_type = stub_type;
11572 stub_entry = ppc_add_stub (stub_name, section, info);
11573 if (stub_entry == NULL)
11576 error_ret_free_internal:
11577 if (elf_section_data (section)->relocs == NULL)
11578 free (internal_relocs);
11579 error_ret_free_local:
11580 if (local_syms != NULL
11581 && (symtab_hdr->contents
11582 != (unsigned char *) local_syms))
11587 stub_entry->stub_type = stub_type;
11588 if (stub_type != ppc_stub_plt_call
11589 && stub_type != ppc_stub_plt_call_r2save)
11591 stub_entry->target_value = code_value;
11592 stub_entry->target_section = code_sec;
11596 stub_entry->target_value = sym_value;
11597 stub_entry->target_section = sym_sec;
11599 stub_entry->h = hash;
11600 stub_entry->plt_ent = plt_ent;
11601 stub_entry->addend = irela->r_addend;
11603 if (stub_entry->h != NULL)
11604 htab->stub_globals += 1;
11607 /* We're done with the internal relocs, free them. */
11608 if (elf_section_data (section)->relocs != internal_relocs)
11609 free (internal_relocs);
11612 if (local_syms != NULL
11613 && symtab_hdr->contents != (unsigned char *) local_syms)
11615 if (!info->keep_memory)
11618 symtab_hdr->contents = (unsigned char *) local_syms;
11622 /* We may have added some stubs. Find out the new size of the
11624 for (stub_sec = htab->stub_bfd->sections;
11626 stub_sec = stub_sec->next)
11627 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11629 stub_sec->rawsize = stub_sec->size;
11630 stub_sec->size = 0;
11631 stub_sec->reloc_count = 0;
11632 stub_sec->flags &= ~SEC_RELOC;
11635 htab->brlt->size = 0;
11636 htab->brlt->reloc_count = 0;
11637 htab->brlt->flags &= ~SEC_RELOC;
11638 if (htab->relbrlt != NULL)
11639 htab->relbrlt->size = 0;
11641 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11643 if (info->emitrelocations
11644 && htab->glink != NULL && htab->glink->size != 0)
11646 htab->glink->reloc_count = 1;
11647 htab->glink->flags |= SEC_RELOC;
11650 if (htab->glink_eh_frame != NULL
11651 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
11652 && (htab->glink_eh_frame->flags & SEC_EXCLUDE) == 0)
11654 bfd_size_type size = 0;
11656 for (stub_sec = htab->stub_bfd->sections;
11658 stub_sec = stub_sec->next)
11659 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11661 if (htab->glink != NULL && htab->glink->size != 0)
11664 size += sizeof (glink_eh_frame_cie);
11665 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11666 htab->glink_eh_frame->size = size;
11669 if (htab->plt_stub_align != 0)
11670 for (stub_sec = htab->stub_bfd->sections;
11672 stub_sec = stub_sec->next)
11673 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11674 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
11675 & (-1 << htab->plt_stub_align));
11677 for (stub_sec = htab->stub_bfd->sections;
11679 stub_sec = stub_sec->next)
11680 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11681 && stub_sec->rawsize != stub_sec->size)
11684 /* Exit from this loop when no stubs have been added, and no stubs
11685 have changed size. */
11686 if (stub_sec == NULL
11687 && (htab->glink_eh_frame == NULL
11688 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
11691 /* Ask the linker to do its stuff. */
11692 (*htab->layout_sections_again) ();
11695 maybe_strip_output (info, htab->brlt);
11696 if (htab->glink_eh_frame != NULL)
11697 maybe_strip_output (info, htab->glink_eh_frame);
11702 /* Called after we have determined section placement. If sections
11703 move, we'll be called again. Provide a value for TOCstart. */
11706 ppc64_elf_toc (bfd *obfd)
11711 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11712 order. The TOC starts where the first of these sections starts. */
11713 s = bfd_get_section_by_name (obfd, ".got");
11714 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11715 s = bfd_get_section_by_name (obfd, ".toc");
11716 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11717 s = bfd_get_section_by_name (obfd, ".tocbss");
11718 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11719 s = bfd_get_section_by_name (obfd, ".plt");
11720 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11722 /* This may happen for
11723 o references to TOC base (SYM@toc / TOC[tc0]) without a
11725 o bad linker script
11726 o --gc-sections and empty TOC sections
11728 FIXME: Warn user? */
11730 /* Look for a likely section. We probably won't even be
11732 for (s = obfd->sections; s != NULL; s = s->next)
11733 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11735 == (SEC_ALLOC | SEC_SMALL_DATA))
11738 for (s = obfd->sections; s != NULL; s = s->next)
11739 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11740 == (SEC_ALLOC | SEC_SMALL_DATA))
11743 for (s = obfd->sections; s != NULL; s = s->next)
11744 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11748 for (s = obfd->sections; s != NULL; s = s->next)
11749 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11755 TOCstart = s->output_section->vma + s->output_offset;
11760 /* Build all the stubs associated with the current output file.
11761 The stubs are kept in a hash table attached to the main linker
11762 hash table. This function is called via gldelf64ppc_finish. */
11765 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11766 struct bfd_link_info *info,
11769 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11770 asection *stub_sec;
11772 int stub_sec_count = 0;
11777 htab->emit_stub_syms = emit_stub_syms;
11779 /* Allocate memory to hold the linker stubs. */
11780 for (stub_sec = htab->stub_bfd->sections;
11782 stub_sec = stub_sec->next)
11783 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11784 && stub_sec->size != 0)
11786 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11787 if (stub_sec->contents == NULL)
11789 /* We want to check that built size is the same as calculated
11790 size. rawsize is a convenient location to use. */
11791 stub_sec->rawsize = stub_sec->size;
11792 stub_sec->size = 0;
11795 if (htab->glink != NULL && htab->glink->size != 0)
11800 /* Build the .glink plt call stub. */
11801 if (htab->emit_stub_syms)
11803 struct elf_link_hash_entry *h;
11804 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11805 TRUE, FALSE, FALSE);
11808 if (h->root.type == bfd_link_hash_new)
11810 h->root.type = bfd_link_hash_defined;
11811 h->root.u.def.section = htab->glink;
11812 h->root.u.def.value = 8;
11813 h->ref_regular = 1;
11814 h->def_regular = 1;
11815 h->ref_regular_nonweak = 1;
11816 h->forced_local = 1;
11820 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11821 if (info->emitrelocations)
11823 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11826 r->r_offset = (htab->glink->output_offset
11827 + htab->glink->output_section->vma);
11828 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11829 r->r_addend = plt0;
11831 p = htab->glink->contents;
11832 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11833 bfd_put_64 (htab->glink->owner, plt0, p);
11835 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11837 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11839 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11841 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11843 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11845 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11847 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11849 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11851 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11853 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11855 bfd_put_32 (htab->glink->owner, BCTR, p);
11857 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11859 bfd_put_32 (htab->glink->owner, NOP, p);
11863 /* Build the .glink lazy link call stubs. */
11865 while (p < htab->glink->contents + htab->glink->size)
11869 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11874 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11876 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11879 bfd_put_32 (htab->glink->owner,
11880 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11884 htab->glink->rawsize = p - htab->glink->contents;
11887 if (htab->brlt->size != 0)
11889 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11891 if (htab->brlt->contents == NULL)
11894 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11896 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11897 htab->relbrlt->size);
11898 if (htab->relbrlt->contents == NULL)
11902 if (htab->glink_eh_frame != NULL
11903 && htab->glink_eh_frame->size != 0)
11907 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
11910 htab->glink_eh_frame->contents = p;
11912 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11914 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
11915 /* CIE length (rewrite in case little-endian). */
11916 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
11917 p += sizeof (glink_eh_frame_cie);
11919 for (stub_sec = htab->stub_bfd->sections;
11921 stub_sec = stub_sec->next)
11922 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11925 bfd_put_32 (htab->elf.dynobj, 16, p);
11928 val = p - htab->glink_eh_frame->contents;
11929 bfd_put_32 (htab->elf.dynobj, val, p);
11931 /* Offset to stub section. */
11932 val = (stub_sec->output_section->vma
11933 + stub_sec->output_offset);
11934 val -= (htab->glink_eh_frame->output_section->vma
11935 + htab->glink_eh_frame->output_offset);
11936 val -= p - htab->glink_eh_frame->contents;
11937 if (val + 0x80000000 > 0xffffffff)
11939 info->callbacks->einfo
11940 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11944 bfd_put_32 (htab->elf.dynobj, val, p);
11946 /* stub section size. */
11947 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
11949 /* Augmentation. */
11954 if (htab->glink != NULL && htab->glink->size != 0)
11957 bfd_put_32 (htab->elf.dynobj, 20, p);
11960 val = p - htab->glink_eh_frame->contents;
11961 bfd_put_32 (htab->elf.dynobj, val, p);
11963 /* Offset to .glink. */
11964 val = (htab->glink->output_section->vma
11965 + htab->glink->output_offset
11967 val -= (htab->glink_eh_frame->output_section->vma
11968 + htab->glink_eh_frame->output_offset);
11969 val -= p - htab->glink_eh_frame->contents;
11970 if (val + 0x80000000 > 0xffffffff)
11972 info->callbacks->einfo
11973 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11974 htab->glink->name);
11977 bfd_put_32 (htab->elf.dynobj, val, p);
11980 bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
11982 /* Augmentation. */
11985 *p++ = DW_CFA_advance_loc + 1;
11986 *p++ = DW_CFA_register;
11989 *p++ = DW_CFA_advance_loc + 4;
11990 *p++ = DW_CFA_restore_extended;
11993 htab->glink_eh_frame->size = p - htab->glink_eh_frame->contents;
11996 /* Build the stubs as directed by the stub hash table. */
11997 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
11999 if (htab->relbrlt != NULL)
12000 htab->relbrlt->reloc_count = 0;
12002 if (htab->plt_stub_align != 0)
12003 for (stub_sec = htab->stub_bfd->sections;
12005 stub_sec = stub_sec->next)
12006 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12007 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12008 & (-1 << htab->plt_stub_align));
12010 for (stub_sec = htab->stub_bfd->sections;
12012 stub_sec = stub_sec->next)
12013 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12015 stub_sec_count += 1;
12016 if (stub_sec->rawsize != stub_sec->size)
12020 if (stub_sec != NULL
12021 || htab->glink->rawsize != htab->glink->size
12022 || (htab->glink_eh_frame != NULL
12023 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12025 htab->stub_error = TRUE;
12026 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12029 if (htab->stub_error)
12034 *stats = bfd_malloc (500);
12035 if (*stats == NULL)
12038 sprintf (*stats, _("linker stubs in %u group%s\n"
12040 " toc adjust %lu\n"
12041 " long branch %lu\n"
12042 " long toc adj %lu\n"
12044 " plt call toc %lu"),
12046 stub_sec_count == 1 ? "" : "s",
12047 htab->stub_count[ppc_stub_long_branch - 1],
12048 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12049 htab->stub_count[ppc_stub_plt_branch - 1],
12050 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12051 htab->stub_count[ppc_stub_plt_call - 1],
12052 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12057 /* This function undoes the changes made by add_symbol_adjust. */
12060 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12062 struct ppc_link_hash_entry *eh;
12064 if (h->root.type == bfd_link_hash_indirect)
12067 eh = (struct ppc_link_hash_entry *) h;
12068 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12071 eh->elf.root.type = bfd_link_hash_undefined;
12076 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12078 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12081 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12084 /* What to do when ld finds relocations against symbols defined in
12085 discarded sections. */
12087 static unsigned int
12088 ppc64_elf_action_discarded (asection *sec)
12090 if (strcmp (".opd", sec->name) == 0)
12093 if (strcmp (".toc", sec->name) == 0)
12096 if (strcmp (".toc1", sec->name) == 0)
12099 return _bfd_elf_default_action_discarded (sec);
12102 /* The RELOCATE_SECTION function is called by the ELF backend linker
12103 to handle the relocations for a section.
12105 The relocs are always passed as Rela structures; if the section
12106 actually uses Rel structures, the r_addend field will always be
12109 This function is responsible for adjust the section contents as
12110 necessary, and (if using Rela relocs and generating a
12111 relocatable output file) adjusting the reloc addend as
12114 This function does not have to worry about setting the reloc
12115 address or the reloc symbol index.
12117 LOCAL_SYMS is a pointer to the swapped in local symbols.
12119 LOCAL_SECTIONS is an array giving the section in the input file
12120 corresponding to the st_shndx field of each local symbol.
12122 The global hash table entry for the global symbols can be found
12123 via elf_sym_hashes (input_bfd).
12125 When generating relocatable output, this function must handle
12126 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12127 going to be the section symbol corresponding to the output
12128 section, which means that the addend must be adjusted
12132 ppc64_elf_relocate_section (bfd *output_bfd,
12133 struct bfd_link_info *info,
12135 asection *input_section,
12136 bfd_byte *contents,
12137 Elf_Internal_Rela *relocs,
12138 Elf_Internal_Sym *local_syms,
12139 asection **local_sections)
12141 struct ppc_link_hash_table *htab;
12142 Elf_Internal_Shdr *symtab_hdr;
12143 struct elf_link_hash_entry **sym_hashes;
12144 Elf_Internal_Rela *rel;
12145 Elf_Internal_Rela *relend;
12146 Elf_Internal_Rela outrel;
12148 struct got_entry **local_got_ents;
12150 bfd_boolean ret = TRUE;
12151 bfd_boolean is_opd;
12152 /* Assume 'at' branch hints. */
12153 bfd_boolean is_isa_v2 = TRUE;
12154 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12156 /* Initialize howto table if needed. */
12157 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12160 htab = ppc_hash_table (info);
12164 /* Don't relocate stub sections. */
12165 if (input_section->owner == htab->stub_bfd)
12168 BFD_ASSERT (is_ppc64_elf (input_bfd));
12170 local_got_ents = elf_local_got_ents (input_bfd);
12171 TOCstart = elf_gp (output_bfd);
12172 symtab_hdr = &elf_symtab_hdr (input_bfd);
12173 sym_hashes = elf_sym_hashes (input_bfd);
12174 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12177 relend = relocs + input_section->reloc_count;
12178 for (; rel < relend; rel++)
12180 enum elf_ppc64_reloc_type r_type;
12181 bfd_vma addend, orig_addend;
12182 bfd_reloc_status_type r;
12183 Elf_Internal_Sym *sym;
12185 struct elf_link_hash_entry *h_elf;
12186 struct ppc_link_hash_entry *h;
12187 struct ppc_link_hash_entry *fdh;
12188 const char *sym_name;
12189 unsigned long r_symndx, toc_symndx;
12190 bfd_vma toc_addend;
12191 unsigned char tls_mask, tls_gd, tls_type;
12192 unsigned char sym_type;
12193 bfd_vma relocation;
12194 bfd_boolean unresolved_reloc;
12195 bfd_boolean warned;
12198 struct ppc_stub_hash_entry *stub_entry;
12199 bfd_vma max_br_offset;
12202 r_type = ELF64_R_TYPE (rel->r_info);
12203 r_symndx = ELF64_R_SYM (rel->r_info);
12205 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12206 symbol of the previous ADDR64 reloc. The symbol gives us the
12207 proper TOC base to use. */
12208 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12210 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12212 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12218 unresolved_reloc = FALSE;
12220 orig_addend = rel->r_addend;
12222 if (r_symndx < symtab_hdr->sh_info)
12224 /* It's a local symbol. */
12225 struct _opd_sec_data *opd;
12227 sym = local_syms + r_symndx;
12228 sec = local_sections[r_symndx];
12229 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12230 sym_type = ELF64_ST_TYPE (sym->st_info);
12231 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12232 opd = get_opd_info (sec);
12233 if (opd != NULL && opd->adjust != NULL)
12235 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12240 /* If this is a relocation against the opd section sym
12241 and we have edited .opd, adjust the reloc addend so
12242 that ld -r and ld --emit-relocs output is correct.
12243 If it is a reloc against some other .opd symbol,
12244 then the symbol value will be adjusted later. */
12245 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12246 rel->r_addend += adjust;
12248 relocation += adjust;
12254 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12255 r_symndx, symtab_hdr, sym_hashes,
12256 h_elf, sec, relocation,
12257 unresolved_reloc, warned);
12258 sym_name = h_elf->root.root.string;
12259 sym_type = h_elf->type;
12261 h = (struct ppc_link_hash_entry *) h_elf;
12263 if (sec != NULL && elf_discarded_section (sec))
12264 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
12266 ppc64_elf_howto_table[r_type],
12269 if (info->relocatable)
12272 /* TLS optimizations. Replace instruction sequences and relocs
12273 based on information we collected in tls_optimize. We edit
12274 RELOCS so that --emit-relocs will output something sensible
12275 for the final instruction stream. */
12280 tls_mask = h->tls_mask;
12281 else if (local_got_ents != NULL)
12283 struct plt_entry **local_plt = (struct plt_entry **)
12284 (local_got_ents + symtab_hdr->sh_info);
12285 unsigned char *lgot_masks = (unsigned char *)
12286 (local_plt + symtab_hdr->sh_info);
12287 tls_mask = lgot_masks[r_symndx];
12290 && (r_type == R_PPC64_TLS
12291 || r_type == R_PPC64_TLSGD
12292 || r_type == R_PPC64_TLSLD))
12294 /* Check for toc tls entries. */
12295 unsigned char *toc_tls;
12297 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12298 &local_syms, rel, input_bfd))
12302 tls_mask = *toc_tls;
12305 /* Check that tls relocs are used with tls syms, and non-tls
12306 relocs are used with non-tls syms. */
12307 if (r_symndx != STN_UNDEF
12308 && r_type != R_PPC64_NONE
12310 || h->elf.root.type == bfd_link_hash_defined
12311 || h->elf.root.type == bfd_link_hash_defweak)
12312 && (IS_PPC64_TLS_RELOC (r_type)
12313 != (sym_type == STT_TLS
12314 || (sym_type == STT_SECTION
12315 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
12318 && (r_type == R_PPC64_TLS
12319 || r_type == R_PPC64_TLSGD
12320 || r_type == R_PPC64_TLSLD))
12321 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12324 info->callbacks->einfo
12325 (!IS_PPC64_TLS_RELOC (r_type)
12326 ? _("%P: %H: %s used with TLS symbol %s\n")
12327 : _("%P: %H: %s used with non-TLS symbol %s\n"),
12328 input_bfd, input_section, rel->r_offset,
12329 ppc64_elf_howto_table[r_type]->name,
12333 /* Ensure reloc mapping code below stays sane. */
12334 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
12335 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
12336 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
12337 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
12338 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
12339 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
12340 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
12341 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
12342 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
12343 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
12351 case R_PPC64_LO_DS_OPT:
12352 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12353 if ((insn & (0x3f << 26)) != 58u << 26)
12355 insn += (14u << 26) - (58u << 26);
12356 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12357 r_type = R_PPC64_TOC16_LO;
12358 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12361 case R_PPC64_TOC16:
12362 case R_PPC64_TOC16_LO:
12363 case R_PPC64_TOC16_DS:
12364 case R_PPC64_TOC16_LO_DS:
12366 /* Check for toc tls entries. */
12367 unsigned char *toc_tls;
12370 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12371 &local_syms, rel, input_bfd);
12377 tls_mask = *toc_tls;
12378 if (r_type == R_PPC64_TOC16_DS
12379 || r_type == R_PPC64_TOC16_LO_DS)
12382 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
12387 /* If we found a GD reloc pair, then we might be
12388 doing a GD->IE transition. */
12391 tls_gd = TLS_TPRELGD;
12392 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12395 else if (retval == 3)
12397 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12405 case R_PPC64_GOT_TPREL16_HI:
12406 case R_PPC64_GOT_TPREL16_HA:
12408 && (tls_mask & TLS_TPREL) == 0)
12410 rel->r_offset -= d_offset;
12411 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12412 r_type = R_PPC64_NONE;
12413 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12417 case R_PPC64_GOT_TPREL16_DS:
12418 case R_PPC64_GOT_TPREL16_LO_DS:
12420 && (tls_mask & TLS_TPREL) == 0)
12423 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12425 insn |= 0x3c0d0000; /* addis 0,13,0 */
12426 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12427 r_type = R_PPC64_TPREL16_HA;
12428 if (toc_symndx != 0)
12430 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12431 rel->r_addend = toc_addend;
12432 /* We changed the symbol. Start over in order to
12433 get h, sym, sec etc. right. */
12438 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12444 && (tls_mask & TLS_TPREL) == 0)
12446 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
12447 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
12450 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12451 /* Was PPC64_TLS which sits on insn boundary, now
12452 PPC64_TPREL16_LO which is at low-order half-word. */
12453 rel->r_offset += d_offset;
12454 r_type = R_PPC64_TPREL16_LO;
12455 if (toc_symndx != 0)
12457 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12458 rel->r_addend = toc_addend;
12459 /* We changed the symbol. Start over in order to
12460 get h, sym, sec etc. right. */
12465 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12469 case R_PPC64_GOT_TLSGD16_HI:
12470 case R_PPC64_GOT_TLSGD16_HA:
12471 tls_gd = TLS_TPRELGD;
12472 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12476 case R_PPC64_GOT_TLSLD16_HI:
12477 case R_PPC64_GOT_TLSLD16_HA:
12478 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12481 if ((tls_mask & tls_gd) != 0)
12482 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12483 + R_PPC64_GOT_TPREL16_DS);
12486 rel->r_offset -= d_offset;
12487 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12488 r_type = R_PPC64_NONE;
12490 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12494 case R_PPC64_GOT_TLSGD16:
12495 case R_PPC64_GOT_TLSGD16_LO:
12496 tls_gd = TLS_TPRELGD;
12497 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12501 case R_PPC64_GOT_TLSLD16:
12502 case R_PPC64_GOT_TLSLD16_LO:
12503 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12505 unsigned int insn1, insn2, insn3;
12509 offset = (bfd_vma) -1;
12510 /* If not using the newer R_PPC64_TLSGD/LD to mark
12511 __tls_get_addr calls, we must trust that the call
12512 stays with its arg setup insns, ie. that the next
12513 reloc is the __tls_get_addr call associated with
12514 the current reloc. Edit both insns. */
12515 if (input_section->has_tls_get_addr_call
12516 && rel + 1 < relend
12517 && branch_reloc_hash_match (input_bfd, rel + 1,
12518 htab->tls_get_addr,
12519 htab->tls_get_addr_fd))
12520 offset = rel[1].r_offset;
12521 if ((tls_mask & tls_gd) != 0)
12524 insn1 = bfd_get_32 (output_bfd,
12525 contents + rel->r_offset - d_offset);
12526 insn1 &= (1 << 26) - (1 << 2);
12527 insn1 |= 58 << 26; /* ld */
12528 insn2 = 0x7c636a14; /* add 3,3,13 */
12529 if (offset != (bfd_vma) -1)
12530 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12531 if ((tls_mask & TLS_EXPLICIT) == 0)
12532 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12533 + R_PPC64_GOT_TPREL16_DS);
12535 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12536 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12541 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12542 insn2 = 0x38630000; /* addi 3,3,0 */
12545 /* Was an LD reloc. */
12547 sec = local_sections[toc_symndx];
12549 r_symndx < symtab_hdr->sh_info;
12551 if (local_sections[r_symndx] == sec)
12553 if (r_symndx >= symtab_hdr->sh_info)
12554 r_symndx = STN_UNDEF;
12555 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12556 if (r_symndx != STN_UNDEF)
12557 rel->r_addend -= (local_syms[r_symndx].st_value
12558 + sec->output_offset
12559 + sec->output_section->vma);
12561 else if (toc_symndx != 0)
12563 r_symndx = toc_symndx;
12564 rel->r_addend = toc_addend;
12566 r_type = R_PPC64_TPREL16_HA;
12567 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12568 if (offset != (bfd_vma) -1)
12570 rel[1].r_info = ELF64_R_INFO (r_symndx,
12571 R_PPC64_TPREL16_LO);
12572 rel[1].r_offset = offset + d_offset;
12573 rel[1].r_addend = rel->r_addend;
12576 bfd_put_32 (output_bfd, insn1,
12577 contents + rel->r_offset - d_offset);
12578 if (offset != (bfd_vma) -1)
12580 insn3 = bfd_get_32 (output_bfd,
12581 contents + offset + 4);
12583 || insn3 == CROR_151515 || insn3 == CROR_313131)
12585 rel[1].r_offset += 4;
12586 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12589 bfd_put_32 (output_bfd, insn2, contents + offset);
12591 if ((tls_mask & tls_gd) == 0
12592 && (tls_gd == 0 || toc_symndx != 0))
12594 /* We changed the symbol. Start over in order
12595 to get h, sym, sec etc. right. */
12602 case R_PPC64_TLSGD:
12603 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12605 unsigned int insn2, insn3;
12606 bfd_vma offset = rel->r_offset;
12608 if ((tls_mask & TLS_TPRELGD) != 0)
12611 r_type = R_PPC64_NONE;
12612 insn2 = 0x7c636a14; /* add 3,3,13 */
12617 if (toc_symndx != 0)
12619 r_symndx = toc_symndx;
12620 rel->r_addend = toc_addend;
12622 r_type = R_PPC64_TPREL16_LO;
12623 rel->r_offset = offset + d_offset;
12624 insn2 = 0x38630000; /* addi 3,3,0 */
12626 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12627 /* Zap the reloc on the _tls_get_addr call too. */
12628 BFD_ASSERT (offset == rel[1].r_offset);
12629 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12630 insn3 = bfd_get_32 (output_bfd,
12631 contents + offset + 4);
12633 || insn3 == CROR_151515 || insn3 == CROR_313131)
12635 rel->r_offset += 4;
12636 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12639 bfd_put_32 (output_bfd, insn2, contents + offset);
12640 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12648 case R_PPC64_TLSLD:
12649 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12651 unsigned int insn2, insn3;
12652 bfd_vma offset = rel->r_offset;
12655 sec = local_sections[toc_symndx];
12657 r_symndx < symtab_hdr->sh_info;
12659 if (local_sections[r_symndx] == sec)
12661 if (r_symndx >= symtab_hdr->sh_info)
12662 r_symndx = STN_UNDEF;
12663 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12664 if (r_symndx != STN_UNDEF)
12665 rel->r_addend -= (local_syms[r_symndx].st_value
12666 + sec->output_offset
12667 + sec->output_section->vma);
12669 r_type = R_PPC64_TPREL16_LO;
12670 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12671 rel->r_offset = offset + d_offset;
12672 /* Zap the reloc on the _tls_get_addr call too. */
12673 BFD_ASSERT (offset == rel[1].r_offset);
12674 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12675 insn2 = 0x38630000; /* addi 3,3,0 */
12676 insn3 = bfd_get_32 (output_bfd,
12677 contents + offset + 4);
12679 || insn3 == CROR_151515 || insn3 == CROR_313131)
12681 rel->r_offset += 4;
12682 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12685 bfd_put_32 (output_bfd, insn2, contents + offset);
12691 case R_PPC64_DTPMOD64:
12692 if (rel + 1 < relend
12693 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12694 && rel[1].r_offset == rel->r_offset + 8)
12696 if ((tls_mask & TLS_GD) == 0)
12698 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12699 if ((tls_mask & TLS_TPRELGD) != 0)
12700 r_type = R_PPC64_TPREL64;
12703 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12704 r_type = R_PPC64_NONE;
12706 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12711 if ((tls_mask & TLS_LD) == 0)
12713 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12714 r_type = R_PPC64_NONE;
12715 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12720 case R_PPC64_TPREL64:
12721 if ((tls_mask & TLS_TPREL) == 0)
12723 r_type = R_PPC64_NONE;
12724 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12729 /* Handle other relocations that tweak non-addend part of insn. */
12731 max_br_offset = 1 << 25;
12732 addend = rel->r_addend;
12738 case R_PPC64_TOCSAVE:
12739 if (relocation + addend == (rel->r_offset
12740 + input_section->output_offset
12741 + input_section->output_section->vma)
12742 && tocsave_find (htab, NO_INSERT,
12743 &local_syms, rel, input_bfd))
12745 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
12747 || insn == CROR_151515 || insn == CROR_313131)
12748 bfd_put_32 (input_bfd, STD_R2_40R1,
12749 contents + rel->r_offset);
12753 /* Branch taken prediction relocations. */
12754 case R_PPC64_ADDR14_BRTAKEN:
12755 case R_PPC64_REL14_BRTAKEN:
12756 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12759 /* Branch not taken prediction relocations. */
12760 case R_PPC64_ADDR14_BRNTAKEN:
12761 case R_PPC64_REL14_BRNTAKEN:
12762 insn |= bfd_get_32 (output_bfd,
12763 contents + rel->r_offset) & ~(0x01 << 21);
12766 case R_PPC64_REL14:
12767 max_br_offset = 1 << 15;
12770 case R_PPC64_REL24:
12771 /* Calls to functions with a different TOC, such as calls to
12772 shared objects, need to alter the TOC pointer. This is
12773 done using a linkage stub. A REL24 branching to these
12774 linkage stubs needs to be followed by a nop, as the nop
12775 will be replaced with an instruction to restore the TOC
12780 && h->oh->is_func_descriptor)
12781 fdh = ppc_follow_link (h->oh);
12782 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12783 if (stub_entry != NULL
12784 && (stub_entry->stub_type == ppc_stub_plt_call
12785 || stub_entry->stub_type == ppc_stub_plt_call_r2save
12786 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12787 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
12789 bfd_boolean can_plt_call = FALSE;
12791 if (rel->r_offset + 8 <= input_section->size)
12794 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12796 || nop == CROR_151515 || nop == CROR_313131)
12799 && (h == htab->tls_get_addr_fd
12800 || h == htab->tls_get_addr)
12801 && !htab->no_tls_get_addr_opt)
12803 /* Special stub used, leave nop alone. */
12806 bfd_put_32 (input_bfd, LD_R2_40R1,
12807 contents + rel->r_offset + 4);
12808 can_plt_call = TRUE;
12814 if (stub_entry->stub_type == ppc_stub_plt_call
12815 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12817 /* If this is a plain branch rather than a branch
12818 and link, don't require a nop. However, don't
12819 allow tail calls in a shared library as they
12820 will result in r2 being corrupted. */
12822 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
12823 if (info->executable && (br & 1) == 0)
12824 can_plt_call = TRUE;
12829 && strcmp (h->elf.root.root.string,
12830 ".__libc_start_main") == 0)
12832 /* Allow crt1 branch to go via a toc adjusting stub. */
12833 can_plt_call = TRUE;
12837 if (strcmp (input_section->output_section->name,
12839 || strcmp (input_section->output_section->name,
12841 info->callbacks->einfo
12842 (_("%P: %H: automatic multiple TOCs "
12843 "not supported using your crt files; "
12844 "recompile with -mminimal-toc or upgrade gcc\n"),
12845 input_bfd, input_section, rel->r_offset);
12847 info->callbacks->einfo
12848 (_("%P: %H: sibling call optimization to `%s' "
12849 "does not allow automatic multiple TOCs; "
12850 "recompile with -mminimal-toc or "
12851 "-fno-optimize-sibling-calls, "
12852 "or make `%s' extern\n"),
12853 input_bfd, input_section, rel->r_offset,
12856 bfd_set_error (bfd_error_bad_value);
12862 && (stub_entry->stub_type == ppc_stub_plt_call
12863 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
12864 unresolved_reloc = FALSE;
12867 if ((stub_entry == NULL
12868 || stub_entry->stub_type == ppc_stub_long_branch
12869 || stub_entry->stub_type == ppc_stub_plt_branch)
12870 && get_opd_info (sec) != NULL)
12872 /* The branch destination is the value of the opd entry. */
12873 bfd_vma off = (relocation + addend
12874 - sec->output_section->vma
12875 - sec->output_offset);
12876 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
12877 if (dest != (bfd_vma) -1)
12884 /* If the branch is out of reach we ought to have a long
12886 from = (rel->r_offset
12887 + input_section->output_offset
12888 + input_section->output_section->vma);
12890 if (stub_entry != NULL
12891 && (stub_entry->stub_type == ppc_stub_long_branch
12892 || stub_entry->stub_type == ppc_stub_plt_branch)
12893 && (r_type == R_PPC64_ADDR14_BRTAKEN
12894 || r_type == R_PPC64_ADDR14_BRNTAKEN
12895 || (relocation + addend - from + max_br_offset
12896 < 2 * max_br_offset)))
12897 /* Don't use the stub if this branch is in range. */
12900 if (stub_entry != NULL)
12902 /* Munge up the value and addend so that we call the stub
12903 rather than the procedure directly. */
12904 relocation = (stub_entry->stub_offset
12905 + stub_entry->stub_sec->output_offset
12906 + stub_entry->stub_sec->output_section->vma);
12909 if ((stub_entry->stub_type == ppc_stub_plt_call
12910 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12911 && (ALWAYS_EMIT_R2SAVE
12912 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12913 && rel + 1 < relend
12914 && rel[1].r_offset == rel->r_offset + 4
12915 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
12923 /* Set 'a' bit. This is 0b00010 in BO field for branch
12924 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12925 for branch on CTR insns (BO == 1a00t or 1a01t). */
12926 if ((insn & (0x14 << 21)) == (0x04 << 21))
12927 insn |= 0x02 << 21;
12928 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12929 insn |= 0x08 << 21;
12935 /* Invert 'y' bit if not the default. */
12936 if ((bfd_signed_vma) (relocation + addend - from) < 0)
12937 insn ^= 0x01 << 21;
12940 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12943 /* NOP out calls to undefined weak functions.
12944 We can thus call a weak function without first
12945 checking whether the function is defined. */
12947 && h->elf.root.type == bfd_link_hash_undefweak
12948 && h->elf.dynindx == -1
12949 && r_type == R_PPC64_REL24
12953 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12959 /* Set `addend'. */
12964 info->callbacks->einfo
12965 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
12966 input_bfd, (int) r_type, sym_name);
12968 bfd_set_error (bfd_error_bad_value);
12974 case R_PPC64_TLSGD:
12975 case R_PPC64_TLSLD:
12976 case R_PPC64_TOCSAVE:
12977 case R_PPC64_GNU_VTINHERIT:
12978 case R_PPC64_GNU_VTENTRY:
12981 /* GOT16 relocations. Like an ADDR16 using the symbol's
12982 address in the GOT as relocation value instead of the
12983 symbol's value itself. Also, create a GOT entry for the
12984 symbol and put the symbol value there. */
12985 case R_PPC64_GOT_TLSGD16:
12986 case R_PPC64_GOT_TLSGD16_LO:
12987 case R_PPC64_GOT_TLSGD16_HI:
12988 case R_PPC64_GOT_TLSGD16_HA:
12989 tls_type = TLS_TLS | TLS_GD;
12992 case R_PPC64_GOT_TLSLD16:
12993 case R_PPC64_GOT_TLSLD16_LO:
12994 case R_PPC64_GOT_TLSLD16_HI:
12995 case R_PPC64_GOT_TLSLD16_HA:
12996 tls_type = TLS_TLS | TLS_LD;
12999 case R_PPC64_GOT_TPREL16_DS:
13000 case R_PPC64_GOT_TPREL16_LO_DS:
13001 case R_PPC64_GOT_TPREL16_HI:
13002 case R_PPC64_GOT_TPREL16_HA:
13003 tls_type = TLS_TLS | TLS_TPREL;
13006 case R_PPC64_GOT_DTPREL16_DS:
13007 case R_PPC64_GOT_DTPREL16_LO_DS:
13008 case R_PPC64_GOT_DTPREL16_HI:
13009 case R_PPC64_GOT_DTPREL16_HA:
13010 tls_type = TLS_TLS | TLS_DTPREL;
13013 case R_PPC64_GOT16:
13014 case R_PPC64_GOT16_LO:
13015 case R_PPC64_GOT16_HI:
13016 case R_PPC64_GOT16_HA:
13017 case R_PPC64_GOT16_DS:
13018 case R_PPC64_GOT16_LO_DS:
13021 /* Relocation is to the entry for this symbol in the global
13026 unsigned long indx = 0;
13027 struct got_entry *ent;
13029 if (tls_type == (TLS_TLS | TLS_LD)
13031 || !h->elf.def_dynamic))
13032 ent = ppc64_tlsld_got (input_bfd);
13038 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13039 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13042 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13043 /* This is actually a static link, or it is a
13044 -Bsymbolic link and the symbol is defined
13045 locally, or the symbol was forced to be local
13046 because of a version file. */
13050 indx = h->elf.dynindx;
13051 unresolved_reloc = FALSE;
13053 ent = h->elf.got.glist;
13057 if (local_got_ents == NULL)
13059 ent = local_got_ents[r_symndx];
13062 for (; ent != NULL; ent = ent->next)
13063 if (ent->addend == orig_addend
13064 && ent->owner == input_bfd
13065 && ent->tls_type == tls_type)
13071 if (ent->is_indirect)
13072 ent = ent->got.ent;
13073 offp = &ent->got.offset;
13074 got = ppc64_elf_tdata (ent->owner)->got;
13078 /* The offset must always be a multiple of 8. We use the
13079 least significant bit to record whether we have already
13080 processed this entry. */
13082 if ((off & 1) != 0)
13086 /* Generate relocs for the dynamic linker, except in
13087 the case of TLSLD where we'll use one entry per
13095 ? h->elf.type == STT_GNU_IFUNC
13096 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13097 if ((info->shared || indx != 0)
13099 || (tls_type == (TLS_TLS | TLS_LD)
13100 && !h->elf.def_dynamic)
13101 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13102 || h->elf.root.type != bfd_link_hash_undefweak))
13103 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13105 relgot = htab->reliplt;
13106 if (relgot != NULL)
13108 outrel.r_offset = (got->output_section->vma
13109 + got->output_offset
13111 outrel.r_addend = addend;
13112 if (tls_type & (TLS_LD | TLS_GD))
13114 outrel.r_addend = 0;
13115 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13116 if (tls_type == (TLS_TLS | TLS_GD))
13118 loc = relgot->contents;
13119 loc += (relgot->reloc_count++
13120 * sizeof (Elf64_External_Rela));
13121 bfd_elf64_swap_reloca_out (output_bfd,
13123 outrel.r_offset += 8;
13124 outrel.r_addend = addend;
13126 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13129 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13130 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13131 else if (tls_type == (TLS_TLS | TLS_TPREL))
13132 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13133 else if (indx != 0)
13134 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13138 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13140 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13142 /* Write the .got section contents for the sake
13144 loc = got->contents + off;
13145 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13149 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13151 outrel.r_addend += relocation;
13152 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13153 outrel.r_addend -= htab->elf.tls_sec->vma;
13155 loc = relgot->contents;
13156 loc += (relgot->reloc_count++
13157 * sizeof (Elf64_External_Rela));
13158 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13161 /* Init the .got section contents here if we're not
13162 emitting a reloc. */
13165 relocation += addend;
13166 if (tls_type == (TLS_TLS | TLS_LD))
13168 else if (tls_type != 0)
13170 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13171 if (tls_type == (TLS_TLS | TLS_TPREL))
13172 relocation += DTP_OFFSET - TP_OFFSET;
13174 if (tls_type == (TLS_TLS | TLS_GD))
13176 bfd_put_64 (output_bfd, relocation,
13177 got->contents + off + 8);
13182 bfd_put_64 (output_bfd, relocation,
13183 got->contents + off);
13187 if (off >= (bfd_vma) -2)
13190 relocation = got->output_section->vma + got->output_offset + off;
13191 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
13195 case R_PPC64_PLT16_HA:
13196 case R_PPC64_PLT16_HI:
13197 case R_PPC64_PLT16_LO:
13198 case R_PPC64_PLT32:
13199 case R_PPC64_PLT64:
13200 /* Relocation is to the entry for this symbol in the
13201 procedure linkage table. */
13203 /* Resolve a PLT reloc against a local symbol directly,
13204 without using the procedure linkage table. */
13208 /* It's possible that we didn't make a PLT entry for this
13209 symbol. This happens when statically linking PIC code,
13210 or when using -Bsymbolic. Go find a match if there is a
13212 if (htab->plt != NULL)
13214 struct plt_entry *ent;
13215 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
13216 if (ent->addend == orig_addend
13217 && ent->plt.offset != (bfd_vma) -1)
13219 relocation = (htab->plt->output_section->vma
13220 + htab->plt->output_offset
13221 + ent->plt.offset);
13222 unresolved_reloc = FALSE;
13228 /* Relocation value is TOC base. */
13229 relocation = TOCstart;
13230 if (r_symndx == STN_UNDEF)
13231 relocation += htab->stub_group[input_section->id].toc_off;
13232 else if (unresolved_reloc)
13234 else if (sec != NULL && sec->id <= htab->top_id)
13235 relocation += htab->stub_group[sec->id].toc_off;
13237 unresolved_reloc = TRUE;
13240 /* TOC16 relocs. We want the offset relative to the TOC base,
13241 which is the address of the start of the TOC plus 0x8000.
13242 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13244 case R_PPC64_TOC16:
13245 case R_PPC64_TOC16_LO:
13246 case R_PPC64_TOC16_HI:
13247 case R_PPC64_TOC16_DS:
13248 case R_PPC64_TOC16_LO_DS:
13249 case R_PPC64_TOC16_HA:
13250 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
13253 /* Relocate against the beginning of the section. */
13254 case R_PPC64_SECTOFF:
13255 case R_PPC64_SECTOFF_LO:
13256 case R_PPC64_SECTOFF_HI:
13257 case R_PPC64_SECTOFF_DS:
13258 case R_PPC64_SECTOFF_LO_DS:
13259 case R_PPC64_SECTOFF_HA:
13261 addend -= sec->output_section->vma;
13264 case R_PPC64_REL16:
13265 case R_PPC64_REL16_LO:
13266 case R_PPC64_REL16_HI:
13267 case R_PPC64_REL16_HA:
13270 case R_PPC64_REL14:
13271 case R_PPC64_REL14_BRNTAKEN:
13272 case R_PPC64_REL14_BRTAKEN:
13273 case R_PPC64_REL24:
13276 case R_PPC64_TPREL16:
13277 case R_PPC64_TPREL16_LO:
13278 case R_PPC64_TPREL16_HI:
13279 case R_PPC64_TPREL16_HA:
13280 case R_PPC64_TPREL16_DS:
13281 case R_PPC64_TPREL16_LO_DS:
13282 case R_PPC64_TPREL16_HIGHER:
13283 case R_PPC64_TPREL16_HIGHERA:
13284 case R_PPC64_TPREL16_HIGHEST:
13285 case R_PPC64_TPREL16_HIGHESTA:
13287 && h->elf.root.type == bfd_link_hash_undefweak
13288 && h->elf.dynindx == -1)
13290 /* Make this relocation against an undefined weak symbol
13291 resolve to zero. This is really just a tweak, since
13292 code using weak externs ought to check that they are
13293 defined before using them. */
13294 bfd_byte *p = contents + rel->r_offset - d_offset;
13296 insn = bfd_get_32 (output_bfd, p);
13297 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
13299 bfd_put_32 (output_bfd, insn, p);
13302 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13304 /* The TPREL16 relocs shouldn't really be used in shared
13305 libs as they will result in DT_TEXTREL being set, but
13306 support them anyway. */
13310 case R_PPC64_DTPREL16:
13311 case R_PPC64_DTPREL16_LO:
13312 case R_PPC64_DTPREL16_HI:
13313 case R_PPC64_DTPREL16_HA:
13314 case R_PPC64_DTPREL16_DS:
13315 case R_PPC64_DTPREL16_LO_DS:
13316 case R_PPC64_DTPREL16_HIGHER:
13317 case R_PPC64_DTPREL16_HIGHERA:
13318 case R_PPC64_DTPREL16_HIGHEST:
13319 case R_PPC64_DTPREL16_HIGHESTA:
13320 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13323 case R_PPC64_DTPMOD64:
13328 case R_PPC64_TPREL64:
13329 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13332 case R_PPC64_DTPREL64:
13333 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13336 /* Relocations that may need to be propagated if this is a
13338 case R_PPC64_REL30:
13339 case R_PPC64_REL32:
13340 case R_PPC64_REL64:
13341 case R_PPC64_ADDR14:
13342 case R_PPC64_ADDR14_BRNTAKEN:
13343 case R_PPC64_ADDR14_BRTAKEN:
13344 case R_PPC64_ADDR16:
13345 case R_PPC64_ADDR16_DS:
13346 case R_PPC64_ADDR16_HA:
13347 case R_PPC64_ADDR16_HI:
13348 case R_PPC64_ADDR16_HIGHER:
13349 case R_PPC64_ADDR16_HIGHERA:
13350 case R_PPC64_ADDR16_HIGHEST:
13351 case R_PPC64_ADDR16_HIGHESTA:
13352 case R_PPC64_ADDR16_LO:
13353 case R_PPC64_ADDR16_LO_DS:
13354 case R_PPC64_ADDR24:
13355 case R_PPC64_ADDR32:
13356 case R_PPC64_ADDR64:
13357 case R_PPC64_UADDR16:
13358 case R_PPC64_UADDR32:
13359 case R_PPC64_UADDR64:
13361 if ((input_section->flags & SEC_ALLOC) == 0)
13364 if (NO_OPD_RELOCS && is_opd)
13369 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13370 || h->elf.root.type != bfd_link_hash_undefweak)
13371 && (must_be_dyn_reloc (info, r_type)
13372 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
13373 || (ELIMINATE_COPY_RELOCS
13376 && h->elf.dynindx != -1
13377 && !h->elf.non_got_ref
13378 && !h->elf.def_regular)
13381 ? h->elf.type == STT_GNU_IFUNC
13382 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
13384 bfd_boolean skip, relocate;
13388 /* When generating a dynamic object, these relocations
13389 are copied into the output file to be resolved at run
13395 out_off = _bfd_elf_section_offset (output_bfd, info,
13396 input_section, rel->r_offset);
13397 if (out_off == (bfd_vma) -1)
13399 else if (out_off == (bfd_vma) -2)
13400 skip = TRUE, relocate = TRUE;
13401 out_off += (input_section->output_section->vma
13402 + input_section->output_offset);
13403 outrel.r_offset = out_off;
13404 outrel.r_addend = rel->r_addend;
13406 /* Optimize unaligned reloc use. */
13407 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
13408 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
13409 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
13410 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
13411 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
13412 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
13413 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
13414 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
13415 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
13418 memset (&outrel, 0, sizeof outrel);
13419 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
13421 && r_type != R_PPC64_TOC)
13422 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
13425 /* This symbol is local, or marked to become local,
13426 or this is an opd section reloc which must point
13427 at a local function. */
13428 outrel.r_addend += relocation;
13429 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
13431 if (is_opd && h != NULL)
13433 /* Lie about opd entries. This case occurs
13434 when building shared libraries and we
13435 reference a function in another shared
13436 lib. The same thing happens for a weak
13437 definition in an application that's
13438 overridden by a strong definition in a
13439 shared lib. (I believe this is a generic
13440 bug in binutils handling of weak syms.)
13441 In these cases we won't use the opd
13442 entry in this lib. */
13443 unresolved_reloc = FALSE;
13446 && r_type == R_PPC64_ADDR64
13448 ? h->elf.type == STT_GNU_IFUNC
13449 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
13450 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13453 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13455 /* We need to relocate .opd contents for ld.so.
13456 Prelink also wants simple and consistent rules
13457 for relocs. This make all RELATIVE relocs have
13458 *r_offset equal to r_addend. */
13467 ? h->elf.type == STT_GNU_IFUNC
13468 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13470 info->callbacks->einfo
13471 (_("%P: %H: relocation %s for indirect "
13472 "function %s unsupported\n"),
13473 input_bfd, input_section, rel->r_offset,
13474 ppc64_elf_howto_table[r_type]->name,
13478 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
13480 else if (sec == NULL || sec->owner == NULL)
13482 bfd_set_error (bfd_error_bad_value);
13489 osec = sec->output_section;
13490 indx = elf_section_data (osec)->dynindx;
13494 if ((osec->flags & SEC_READONLY) == 0
13495 && htab->elf.data_index_section != NULL)
13496 osec = htab->elf.data_index_section;
13498 osec = htab->elf.text_index_section;
13499 indx = elf_section_data (osec)->dynindx;
13501 BFD_ASSERT (indx != 0);
13503 /* We are turning this relocation into one
13504 against a section symbol, so subtract out
13505 the output section's address but not the
13506 offset of the input section in the output
13508 outrel.r_addend -= osec->vma;
13511 outrel.r_info = ELF64_R_INFO (indx, r_type);
13515 sreloc = elf_section_data (input_section)->sreloc;
13516 if (!htab->elf.dynamic_sections_created)
13517 sreloc = htab->reliplt;
13518 if (sreloc == NULL)
13521 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13524 loc = sreloc->contents;
13525 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13526 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13528 /* If this reloc is against an external symbol, it will
13529 be computed at runtime, so there's no need to do
13530 anything now. However, for the sake of prelink ensure
13531 that the section contents are a known value. */
13534 unresolved_reloc = FALSE;
13535 /* The value chosen here is quite arbitrary as ld.so
13536 ignores section contents except for the special
13537 case of .opd where the contents might be accessed
13538 before relocation. Choose zero, as that won't
13539 cause reloc overflow. */
13542 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13543 to improve backward compatibility with older
13545 if (r_type == R_PPC64_ADDR64)
13546 addend = outrel.r_addend;
13547 /* Adjust pc_relative relocs to have zero in *r_offset. */
13548 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13549 addend = (input_section->output_section->vma
13550 + input_section->output_offset
13557 case R_PPC64_GLOB_DAT:
13558 case R_PPC64_JMP_SLOT:
13559 case R_PPC64_JMP_IREL:
13560 case R_PPC64_RELATIVE:
13561 /* We shouldn't ever see these dynamic relocs in relocatable
13563 /* Fall through. */
13565 case R_PPC64_PLTGOT16:
13566 case R_PPC64_PLTGOT16_DS:
13567 case R_PPC64_PLTGOT16_HA:
13568 case R_PPC64_PLTGOT16_HI:
13569 case R_PPC64_PLTGOT16_LO:
13570 case R_PPC64_PLTGOT16_LO_DS:
13571 case R_PPC64_PLTREL32:
13572 case R_PPC64_PLTREL64:
13573 /* These ones haven't been implemented yet. */
13575 info->callbacks->einfo
13576 (_("%P: %B: relocation %s is not supported for symbol %s\n"),
13578 ppc64_elf_howto_table[r_type]->name, sym_name);
13580 bfd_set_error (bfd_error_invalid_operation);
13585 /* Multi-instruction sequences that access the TOC can be
13586 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13587 to nop; addi rb,r2,x; */
13593 case R_PPC64_GOT_TLSLD16_HI:
13594 case R_PPC64_GOT_TLSGD16_HI:
13595 case R_PPC64_GOT_TPREL16_HI:
13596 case R_PPC64_GOT_DTPREL16_HI:
13597 case R_PPC64_GOT16_HI:
13598 case R_PPC64_TOC16_HI:
13599 /* These relocs would only be useful if building up an
13600 offset to later add to r2, perhaps in an indexed
13601 addressing mode instruction. Don't try to optimize.
13602 Unfortunately, the possibility of someone building up an
13603 offset like this or even with the HA relocs, means that
13604 we need to check the high insn when optimizing the low
13608 case R_PPC64_GOT_TLSLD16_HA:
13609 case R_PPC64_GOT_TLSGD16_HA:
13610 case R_PPC64_GOT_TPREL16_HA:
13611 case R_PPC64_GOT_DTPREL16_HA:
13612 case R_PPC64_GOT16_HA:
13613 case R_PPC64_TOC16_HA:
13614 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13615 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13617 bfd_byte *p = contents + (rel->r_offset & ~3);
13618 bfd_put_32 (input_bfd, NOP, p);
13622 case R_PPC64_GOT_TLSLD16_LO:
13623 case R_PPC64_GOT_TLSGD16_LO:
13624 case R_PPC64_GOT_TPREL16_LO_DS:
13625 case R_PPC64_GOT_DTPREL16_LO_DS:
13626 case R_PPC64_GOT16_LO:
13627 case R_PPC64_GOT16_LO_DS:
13628 case R_PPC64_TOC16_LO:
13629 case R_PPC64_TOC16_LO_DS:
13630 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13631 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13633 bfd_byte *p = contents + (rel->r_offset & ~3);
13634 insn = bfd_get_32 (input_bfd, p);
13635 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
13637 /* Transform addic to addi when we change reg. */
13638 insn &= ~((0x3f << 26) | (0x1f << 16));
13639 insn |= (14u << 26) | (2 << 16);
13643 insn &= ~(0x1f << 16);
13646 bfd_put_32 (input_bfd, insn, p);
13651 /* Do any further special processing. */
13657 case R_PPC64_ADDR16_HA:
13658 case R_PPC64_REL16_HA:
13659 case R_PPC64_ADDR16_HIGHERA:
13660 case R_PPC64_ADDR16_HIGHESTA:
13661 case R_PPC64_TOC16_HA:
13662 case R_PPC64_SECTOFF_HA:
13663 case R_PPC64_TPREL16_HA:
13664 case R_PPC64_DTPREL16_HA:
13665 case R_PPC64_TPREL16_HIGHER:
13666 case R_PPC64_TPREL16_HIGHERA:
13667 case R_PPC64_TPREL16_HIGHEST:
13668 case R_PPC64_TPREL16_HIGHESTA:
13669 case R_PPC64_DTPREL16_HIGHER:
13670 case R_PPC64_DTPREL16_HIGHERA:
13671 case R_PPC64_DTPREL16_HIGHEST:
13672 case R_PPC64_DTPREL16_HIGHESTA:
13673 /* It's just possible that this symbol is a weak symbol
13674 that's not actually defined anywhere. In that case,
13675 'sec' would be NULL, and we should leave the symbol
13676 alone (it will be set to zero elsewhere in the link). */
13681 case R_PPC64_GOT16_HA:
13682 case R_PPC64_PLTGOT16_HA:
13683 case R_PPC64_PLT16_HA:
13684 case R_PPC64_GOT_TLSGD16_HA:
13685 case R_PPC64_GOT_TLSLD16_HA:
13686 case R_PPC64_GOT_TPREL16_HA:
13687 case R_PPC64_GOT_DTPREL16_HA:
13688 /* Add 0x10000 if sign bit in 0:15 is set.
13689 Bits 0:15 are not used. */
13693 case R_PPC64_ADDR16_DS:
13694 case R_PPC64_ADDR16_LO_DS:
13695 case R_PPC64_GOT16_DS:
13696 case R_PPC64_GOT16_LO_DS:
13697 case R_PPC64_PLT16_LO_DS:
13698 case R_PPC64_SECTOFF_DS:
13699 case R_PPC64_SECTOFF_LO_DS:
13700 case R_PPC64_TOC16_DS:
13701 case R_PPC64_TOC16_LO_DS:
13702 case R_PPC64_PLTGOT16_DS:
13703 case R_PPC64_PLTGOT16_LO_DS:
13704 case R_PPC64_GOT_TPREL16_DS:
13705 case R_PPC64_GOT_TPREL16_LO_DS:
13706 case R_PPC64_GOT_DTPREL16_DS:
13707 case R_PPC64_GOT_DTPREL16_LO_DS:
13708 case R_PPC64_TPREL16_DS:
13709 case R_PPC64_TPREL16_LO_DS:
13710 case R_PPC64_DTPREL16_DS:
13711 case R_PPC64_DTPREL16_LO_DS:
13712 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13714 /* If this reloc is against an lq insn, then the value must be
13715 a multiple of 16. This is somewhat of a hack, but the
13716 "correct" way to do this by defining _DQ forms of all the
13717 _DS relocs bloats all reloc switches in this file. It
13718 doesn't seem to make much sense to use any of these relocs
13719 in data, so testing the insn should be safe. */
13720 if ((insn & (0x3f << 26)) == (56u << 26))
13722 if (((relocation + addend) & mask) != 0)
13724 info->callbacks->einfo
13725 (_("%P: %H: error: %s not a multiple of %u\n"),
13726 input_bfd, input_section, rel->r_offset,
13727 ppc64_elf_howto_table[r_type]->name,
13729 bfd_set_error (bfd_error_bad_value);
13736 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13737 because such sections are not SEC_ALLOC and thus ld.so will
13738 not process them. */
13739 if (unresolved_reloc
13740 && !((input_section->flags & SEC_DEBUGGING) != 0
13741 && h->elf.def_dynamic)
13742 && _bfd_elf_section_offset (output_bfd, info, input_section,
13743 rel->r_offset) != (bfd_vma) -1)
13745 info->callbacks->einfo
13746 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
13747 input_bfd, input_section, rel->r_offset,
13748 ppc64_elf_howto_table[(int) r_type]->name,
13749 h->elf.root.root.string);
13753 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
13761 if (r != bfd_reloc_ok)
13763 if (sym_name == NULL)
13764 sym_name = "(null)";
13765 if (r == bfd_reloc_overflow)
13770 && h->elf.root.type == bfd_link_hash_undefweak
13771 && ppc64_elf_howto_table[r_type]->pc_relative)
13773 /* Assume this is a call protected by other code that
13774 detects the symbol is undefined. If this is the case,
13775 we can safely ignore the overflow. If not, the
13776 program is hosed anyway, and a little warning isn't
13782 if (!((*info->callbacks->reloc_overflow)
13783 (info, (h ? &h->elf.root : NULL), sym_name,
13784 ppc64_elf_howto_table[r_type]->name,
13785 orig_addend, input_bfd, input_section, rel->r_offset)))
13790 info->callbacks->einfo
13791 (_("%P: %H: %s reloc against `%s': error %d\n"),
13792 input_bfd, input_section, rel->r_offset,
13793 ppc64_elf_howto_table[r_type]->name,
13801 /* If we're emitting relocations, then shortly after this function
13802 returns, reloc offsets and addends for this section will be
13803 adjusted. Worse, reloc symbol indices will be for the output
13804 file rather than the input. Save a copy of the relocs for
13805 opd_entry_value. */
13806 if (is_opd && (info->emitrelocations || info->relocatable))
13809 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13810 rel = bfd_alloc (input_bfd, amt);
13811 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13812 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13815 memcpy (rel, relocs, amt);
13820 /* Adjust the value of any local symbols in opd sections. */
13823 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13824 const char *name ATTRIBUTE_UNUSED,
13825 Elf_Internal_Sym *elfsym,
13826 asection *input_sec,
13827 struct elf_link_hash_entry *h)
13829 struct _opd_sec_data *opd;
13836 opd = get_opd_info (input_sec);
13837 if (opd == NULL || opd->adjust == NULL)
13840 value = elfsym->st_value - input_sec->output_offset;
13841 if (!info->relocatable)
13842 value -= input_sec->output_section->vma;
13844 adjust = opd->adjust[value / 8];
13848 elfsym->st_value += adjust;
13852 /* Finish up dynamic symbol handling. We set the contents of various
13853 dynamic sections here. */
13856 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13857 struct bfd_link_info *info,
13858 struct elf_link_hash_entry *h,
13859 Elf_Internal_Sym *sym)
13861 struct ppc_link_hash_table *htab;
13862 struct plt_entry *ent;
13863 Elf_Internal_Rela rela;
13866 htab = ppc_hash_table (info);
13870 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13871 if (ent->plt.offset != (bfd_vma) -1)
13873 /* This symbol has an entry in the procedure linkage
13874 table. Set it up. */
13875 if (!htab->elf.dynamic_sections_created
13876 || h->dynindx == -1)
13878 BFD_ASSERT (h->type == STT_GNU_IFUNC
13880 && (h->root.type == bfd_link_hash_defined
13881 || h->root.type == bfd_link_hash_defweak));
13882 rela.r_offset = (htab->iplt->output_section->vma
13883 + htab->iplt->output_offset
13884 + ent->plt.offset);
13885 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13886 rela.r_addend = (h->root.u.def.value
13887 + h->root.u.def.section->output_offset
13888 + h->root.u.def.section->output_section->vma
13890 loc = (htab->reliplt->contents
13891 + (htab->reliplt->reloc_count++
13892 * sizeof (Elf64_External_Rela)));
13896 rela.r_offset = (htab->plt->output_section->vma
13897 + htab->plt->output_offset
13898 + ent->plt.offset);
13899 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13900 rela.r_addend = ent->addend;
13901 loc = (htab->relplt->contents
13902 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13903 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
13905 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13910 /* This symbol needs a copy reloc. Set it up. */
13912 if (h->dynindx == -1
13913 || (h->root.type != bfd_link_hash_defined
13914 && h->root.type != bfd_link_hash_defweak)
13915 || htab->relbss == NULL)
13918 rela.r_offset = (h->root.u.def.value
13919 + h->root.u.def.section->output_section->vma
13920 + h->root.u.def.section->output_offset);
13921 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13923 loc = htab->relbss->contents;
13924 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
13925 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13928 /* Mark some specially defined symbols as absolute. */
13929 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
13930 sym->st_shndx = SHN_ABS;
13935 /* Used to decide how to sort relocs in an optimal manner for the
13936 dynamic linker, before writing them out. */
13938 static enum elf_reloc_type_class
13939 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
13941 enum elf_ppc64_reloc_type r_type;
13943 r_type = ELF64_R_TYPE (rela->r_info);
13946 case R_PPC64_RELATIVE:
13947 return reloc_class_relative;
13948 case R_PPC64_JMP_SLOT:
13949 return reloc_class_plt;
13951 return reloc_class_copy;
13953 return reloc_class_normal;
13957 /* Finish up the dynamic sections. */
13960 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
13961 struct bfd_link_info *info)
13963 struct ppc_link_hash_table *htab;
13967 htab = ppc_hash_table (info);
13971 dynobj = htab->elf.dynobj;
13972 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
13974 if (htab->elf.dynamic_sections_created)
13976 Elf64_External_Dyn *dyncon, *dynconend;
13978 if (sdyn == NULL || htab->got == NULL)
13981 dyncon = (Elf64_External_Dyn *) sdyn->contents;
13982 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
13983 for (; dyncon < dynconend; dyncon++)
13985 Elf_Internal_Dyn dyn;
13988 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
13995 case DT_PPC64_GLINK:
13997 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13998 /* We stupidly defined DT_PPC64_GLINK to be the start
13999 of glink rather than the first entry point, which is
14000 what ld.so needs, and now have a bigger stub to
14001 support automatic multiple TOCs. */
14002 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
14006 s = bfd_get_section_by_name (output_bfd, ".opd");
14009 dyn.d_un.d_ptr = s->vma;
14012 case DT_PPC64_OPDSZ:
14013 s = bfd_get_section_by_name (output_bfd, ".opd");
14016 dyn.d_un.d_val = s->size;
14021 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14026 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14030 dyn.d_un.d_val = htab->relplt->size;
14034 /* Don't count procedure linkage table relocs in the
14035 overall reloc count. */
14039 dyn.d_un.d_val -= s->size;
14043 /* We may not be using the standard ELF linker script.
14044 If .rela.plt is the first .rela section, we adjust
14045 DT_RELA to not include it. */
14049 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14051 dyn.d_un.d_ptr += s->size;
14055 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14059 if (htab->got != NULL && htab->got->size != 0)
14061 /* Fill in the first entry in the global offset table.
14062 We use it to hold the link-time TOCbase. */
14063 bfd_put_64 (output_bfd,
14064 elf_gp (output_bfd) + TOC_BASE_OFF,
14065 htab->got->contents);
14067 /* Set .got entry size. */
14068 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
14071 if (htab->plt != NULL && htab->plt->size != 0)
14073 /* Set .plt entry size. */
14074 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
14078 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14079 brlt ourselves if emitrelocations. */
14080 if (htab->brlt != NULL
14081 && htab->brlt->reloc_count != 0
14082 && !_bfd_elf_link_output_relocs (output_bfd,
14084 elf_section_data (htab->brlt)->rela.hdr,
14085 elf_section_data (htab->brlt)->relocs,
14089 if (htab->glink != NULL
14090 && htab->glink->reloc_count != 0
14091 && !_bfd_elf_link_output_relocs (output_bfd,
14093 elf_section_data (htab->glink)->rela.hdr,
14094 elf_section_data (htab->glink)->relocs,
14099 if (htab->glink_eh_frame != NULL
14100 && htab->glink_eh_frame->sec_info_type == ELF_INFO_TYPE_EH_FRAME
14101 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14102 htab->glink_eh_frame,
14103 htab->glink_eh_frame->contents))
14106 /* We need to handle writing out multiple GOT sections ourselves,
14107 since we didn't add them to DYNOBJ. We know dynobj is the first
14109 while ((dynobj = dynobj->link_next) != NULL)
14113 if (!is_ppc64_elf (dynobj))
14116 s = ppc64_elf_tdata (dynobj)->got;
14119 && s->output_section != bfd_abs_section_ptr
14120 && !bfd_set_section_contents (output_bfd, s->output_section,
14121 s->contents, s->output_offset,
14124 s = ppc64_elf_tdata (dynobj)->relgot;
14127 && s->output_section != bfd_abs_section_ptr
14128 && !bfd_set_section_contents (output_bfd, s->output_section,
14129 s->contents, s->output_offset,
14137 #include "elf64-target.h"
14139 /* FreeBSD support */
14141 #undef TARGET_LITTLE_SYM
14142 #undef TARGET_LITTLE_NAME
14144 #undef TARGET_BIG_SYM
14145 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14146 #undef TARGET_BIG_NAME
14147 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14150 #define ELF_OSABI ELFOSABI_FREEBSD
14153 #define elf64_bed elf64_powerpc_fbsd_bed
14155 #include "elf64-target.h"