1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 static bfd_vma opd_entry_value
58 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_post_process_headers _bfd_elf_set_osabi
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE 24
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
131 /* TOC base pointers offset from start of TOC. */
132 #define TOC_BASE_OFF 0x8000
134 /* Offset of tp and dtp pointers from start of TLS block. */
135 #define TP_OFFSET 0x7000
136 #define DTP_OFFSET 0x8000
138 /* .plt call stub instructions. The normal stub is like this, but
139 sometimes the .plt entry crosses a 64k boundary and we need to
140 insert an addi to adjust r12. */
141 #define PLT_CALL_STUB_SIZE (7*4)
142 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
143 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
144 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
145 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
146 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
147 /* ld %r11,xxx+16@l(%r12) */
148 #define BCTR 0x4e800420 /* bctr */
151 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
152 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
153 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
154 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
156 #define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
157 #define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
158 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
159 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
160 #define BNECTR 0x4ca20420 /* bnectr+ */
161 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
163 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
164 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
166 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
168 /* glink call stub instructions. We enter with the index in R0. */
169 #define GLINK_CALL_STUB_SIZE (16*4)
173 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
174 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
176 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
177 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
178 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
187 #define NOP 0x60000000
189 /* Some other nops. */
190 #define CROR_151515 0x4def7b82
191 #define CROR_313131 0x4ffffb82
193 /* .glink entries for the first 32k functions are two instructions. */
194 #define LI_R0_0 0x38000000 /* li %r0,0 */
195 #define B_DOT 0x48000000 /* b . */
197 /* After that, we need two instructions to load the index, followed by
199 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
200 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
202 /* Instructions used by the save and restore reg functions. */
203 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
204 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
205 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
206 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
207 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
208 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
209 #define LI_R12_0 0x39800000 /* li %r12,0 */
210 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
211 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
212 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
213 #define BLR 0x4e800020 /* blr */
215 /* Since .opd is an array of descriptors and each entry will end up
216 with identical R_PPC64_RELATIVE relocs, there is really no need to
217 propagate .opd relocs; The dynamic linker should be taught to
218 relocate .opd without reloc entries. */
219 #ifndef NO_OPD_RELOCS
220 #define NO_OPD_RELOCS 0
223 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
225 /* Relocation HOWTO's. */
226 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
228 static reloc_howto_type ppc64_elf_howto_raw[] = {
229 /* This reloc does nothing. */
230 HOWTO (R_PPC64_NONE, /* type */
232 2, /* size (0 = byte, 1 = short, 2 = long) */
234 FALSE, /* pc_relative */
236 complain_overflow_dont, /* complain_on_overflow */
237 bfd_elf_generic_reloc, /* special_function */
238 "R_PPC64_NONE", /* name */
239 FALSE, /* partial_inplace */
242 FALSE), /* pcrel_offset */
244 /* A standard 32 bit relocation. */
245 HOWTO (R_PPC64_ADDR32, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_bitfield, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_PPC64_ADDR32", /* name */
254 FALSE, /* partial_inplace */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
259 /* An absolute 26 bit branch; the lower two bits must be zero.
260 FIXME: we don't check that, we just clear them. */
261 HOWTO (R_PPC64_ADDR24, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR24", /* name */
270 FALSE, /* partial_inplace */
272 0x03fffffc, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* A standard 16 bit relocation. */
276 HOWTO (R_PPC64_ADDR16, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_PPC64_ADDR16", /* name */
285 FALSE, /* partial_inplace */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* A 16 bit relocation without overflow. */
291 HOWTO (R_PPC64_ADDR16_LO, /* type */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE, /* pc_relative */
297 complain_overflow_dont,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_PPC64_ADDR16_LO", /* name */
300 FALSE, /* partial_inplace */
302 0xffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
305 /* Bits 16-31 of an address. */
306 HOWTO (R_PPC64_ADDR16_HI, /* type */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC64_ADDR16_HI", /* name */
315 FALSE, /* partial_inplace */
317 0xffff, /* dst_mask */
318 FALSE), /* pcrel_offset */
320 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
321 bits, treated as a signed number, is negative. */
322 HOWTO (R_PPC64_ADDR16_HA, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_dont, /* complain_on_overflow */
329 ppc64_elf_ha_reloc, /* special_function */
330 "R_PPC64_ADDR16_HA", /* name */
331 FALSE, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* An absolute 16 bit branch; the lower two bits must be zero.
337 FIXME: we don't check that, we just clear them. */
338 HOWTO (R_PPC64_ADDR14, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 ppc64_elf_branch_reloc, /* special_function */
346 "R_PPC64_ADDR14", /* name */
347 FALSE, /* partial_inplace */
349 0x0000fffc, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* An absolute 16 bit branch, for which bit 10 should be set to
353 indicate that the branch is expected to be taken. The lower two
354 bits must be zero. */
355 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 ppc64_elf_brtaken_reloc, /* special_function */
363 "R_PPC64_ADDR14_BRTAKEN",/* name */
364 FALSE, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is not expected to be taken. The lower
371 two bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE, /* pc_relative */
378 complain_overflow_bitfield, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc, /* special_function */
380 "R_PPC64_ADDR14_BRNTAKEN",/* name */
381 FALSE, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE), /* pcrel_offset */
386 /* A relative 26 bit branch; the lower two bits must be zero. */
387 HOWTO (R_PPC64_REL24, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 ppc64_elf_branch_reloc, /* special_function */
395 "R_PPC64_REL24", /* name */
396 FALSE, /* partial_inplace */
398 0x03fffffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
401 /* A relative 16 bit branch; the lower two bits must be zero. */
402 HOWTO (R_PPC64_REL14, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 TRUE, /* pc_relative */
408 complain_overflow_signed, /* complain_on_overflow */
409 ppc64_elf_branch_reloc, /* special_function */
410 "R_PPC64_REL14", /* name */
411 FALSE, /* partial_inplace */
413 0x0000fffc, /* dst_mask */
414 TRUE), /* pcrel_offset */
416 /* A relative 16 bit branch. Bit 10 should be set to indicate that
417 the branch is expected to be taken. The lower two bits must be
419 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 ppc64_elf_brtaken_reloc, /* special_function */
427 "R_PPC64_REL14_BRTAKEN", /* name */
428 FALSE, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is not expected to be taken. The lower two bits must
436 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_signed, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc, /* special_function */
444 "R_PPC64_REL14_BRNTAKEN",/* name */
445 FALSE, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
452 HOWTO (R_PPC64_GOT16, /* type */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE, /* pc_relative */
458 complain_overflow_signed, /* complain_on_overflow */
459 ppc64_elf_unhandled_reloc, /* special_function */
460 "R_PPC64_GOT16", /* name */
461 FALSE, /* partial_inplace */
463 0xffff, /* dst_mask */
464 FALSE), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
468 HOWTO (R_PPC64_GOT16_LO, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc, /* special_function */
476 "R_PPC64_GOT16_LO", /* name */
477 FALSE, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_HI, /* type */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_dont,/* complain_on_overflow */
491 ppc64_elf_unhandled_reloc, /* special_function */
492 "R_PPC64_GOT16_HI", /* name */
493 FALSE, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HA, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_dont,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc, /* special_function */
508 "R_PPC64_GOT16_HA", /* name */
509 FALSE, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* This is used only by the dynamic linker. The symbol should exist
515 both in the object being run and in some shared library. The
516 dynamic linker copies the data addressed by the symbol from the
517 shared library into the object, because the object being
518 run has to have the data at some particular address. */
519 HOWTO (R_PPC64_COPY, /* type */
521 0, /* this one is variable size */
523 FALSE, /* pc_relative */
525 complain_overflow_dont, /* complain_on_overflow */
526 ppc64_elf_unhandled_reloc, /* special_function */
527 "R_PPC64_COPY", /* name */
528 FALSE, /* partial_inplace */
531 FALSE), /* pcrel_offset */
533 /* Like R_PPC64_ADDR64, but used when setting global offset table
535 HOWTO (R_PPC64_GLOB_DAT, /* type */
537 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
539 FALSE, /* pc_relative */
541 complain_overflow_dont, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc, /* special_function */
543 "R_PPC64_GLOB_DAT", /* name */
544 FALSE, /* partial_inplace */
546 ONES (64), /* dst_mask */
547 FALSE), /* pcrel_offset */
549 /* Created by the link editor. Marks a procedure linkage table
550 entry for a symbol. */
551 HOWTO (R_PPC64_JMP_SLOT, /* type */
553 0, /* size (0 = byte, 1 = short, 2 = long) */
555 FALSE, /* pc_relative */
557 complain_overflow_dont, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc, /* special_function */
559 "R_PPC64_JMP_SLOT", /* name */
560 FALSE, /* partial_inplace */
563 FALSE), /* pcrel_offset */
565 /* Used only by the dynamic linker. When the object is run, this
566 doubleword64 is set to the load address of the object, plus the
568 HOWTO (R_PPC64_RELATIVE, /* type */
570 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_RELATIVE", /* name */
577 FALSE, /* partial_inplace */
579 ONES (64), /* dst_mask */
580 FALSE), /* pcrel_offset */
582 /* Like R_PPC64_ADDR32, but may be unaligned. */
583 HOWTO (R_PPC64_UADDR32, /* type */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
587 FALSE, /* pc_relative */
589 complain_overflow_bitfield, /* complain_on_overflow */
590 bfd_elf_generic_reloc, /* special_function */
591 "R_PPC64_UADDR32", /* name */
592 FALSE, /* partial_inplace */
594 0xffffffff, /* dst_mask */
595 FALSE), /* pcrel_offset */
597 /* Like R_PPC64_ADDR16, but may be unaligned. */
598 HOWTO (R_PPC64_UADDR16, /* type */
600 1, /* size (0 = byte, 1 = short, 2 = long) */
602 FALSE, /* pc_relative */
604 complain_overflow_bitfield, /* complain_on_overflow */
605 bfd_elf_generic_reloc, /* special_function */
606 "R_PPC64_UADDR16", /* name */
607 FALSE, /* partial_inplace */
609 0xffff, /* dst_mask */
610 FALSE), /* pcrel_offset */
612 /* 32-bit PC relative. */
613 HOWTO (R_PPC64_REL32, /* type */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
617 TRUE, /* pc_relative */
619 /* FIXME: Verify. Was complain_overflow_bitfield. */
620 complain_overflow_signed, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_REL32", /* name */
623 FALSE, /* partial_inplace */
625 0xffffffff, /* dst_mask */
626 TRUE), /* pcrel_offset */
628 /* 32-bit relocation to the symbol's procedure linkage table. */
629 HOWTO (R_PPC64_PLT32, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE, /* pc_relative */
635 complain_overflow_bitfield, /* complain_on_overflow */
636 ppc64_elf_unhandled_reloc, /* special_function */
637 "R_PPC64_PLT32", /* name */
638 FALSE, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
643 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
644 FIXME: R_PPC64_PLTREL32 not supported. */
645 HOWTO (R_PPC64_PLTREL32, /* type */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
649 TRUE, /* pc_relative */
651 complain_overflow_signed, /* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_PPC64_PLTREL32", /* name */
654 FALSE, /* partial_inplace */
656 0xffffffff, /* dst_mask */
657 TRUE), /* pcrel_offset */
659 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
661 HOWTO (R_PPC64_PLT16_LO, /* type */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE, /* pc_relative */
667 complain_overflow_dont, /* complain_on_overflow */
668 ppc64_elf_unhandled_reloc, /* special_function */
669 "R_PPC64_PLT16_LO", /* name */
670 FALSE, /* partial_inplace */
672 0xffff, /* dst_mask */
673 FALSE), /* pcrel_offset */
675 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
677 HOWTO (R_PPC64_PLT16_HI, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE, /* pc_relative */
683 complain_overflow_dont, /* complain_on_overflow */
684 ppc64_elf_unhandled_reloc, /* special_function */
685 "R_PPC64_PLT16_HI", /* name */
686 FALSE, /* partial_inplace */
688 0xffff, /* dst_mask */
689 FALSE), /* pcrel_offset */
691 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
693 HOWTO (R_PPC64_PLT16_HA, /* type */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
697 FALSE, /* pc_relative */
699 complain_overflow_dont, /* complain_on_overflow */
700 ppc64_elf_unhandled_reloc, /* special_function */
701 "R_PPC64_PLT16_HA", /* name */
702 FALSE, /* partial_inplace */
704 0xffff, /* dst_mask */
705 FALSE), /* pcrel_offset */
707 /* 16-bit section relative relocation. */
708 HOWTO (R_PPC64_SECTOFF, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE, /* pc_relative */
714 complain_overflow_bitfield, /* complain_on_overflow */
715 ppc64_elf_sectoff_reloc, /* special_function */
716 "R_PPC64_SECTOFF", /* name */
717 FALSE, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE), /* pcrel_offset */
722 /* Like R_PPC64_SECTOFF, but no overflow warning. */
723 HOWTO (R_PPC64_SECTOFF_LO, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_dont, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc, /* special_function */
731 "R_PPC64_SECTOFF_LO", /* name */
732 FALSE, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC64_SECTOFF_HI, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE, /* pc_relative */
744 complain_overflow_dont, /* complain_on_overflow */
745 ppc64_elf_sectoff_reloc, /* special_function */
746 "R_PPC64_SECTOFF_HI", /* name */
747 FALSE, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE), /* pcrel_offset */
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HA, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE, /* pc_relative */
759 complain_overflow_dont, /* complain_on_overflow */
760 ppc64_elf_sectoff_ha_reloc, /* special_function */
761 "R_PPC64_SECTOFF_HA", /* name */
762 FALSE, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE), /* pcrel_offset */
767 /* Like R_PPC64_REL24 without touching the two least significant bits. */
768 HOWTO (R_PPC64_REL30, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 TRUE, /* pc_relative */
774 complain_overflow_dont, /* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
776 "R_PPC64_REL30", /* name */
777 FALSE, /* partial_inplace */
779 0xfffffffc, /* dst_mask */
780 TRUE), /* pcrel_offset */
782 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
784 /* A standard 64-bit relocation. */
785 HOWTO (R_PPC64_ADDR64, /* type */
787 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 FALSE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC64_ADDR64", /* name */
794 FALSE, /* partial_inplace */
796 ONES (64), /* dst_mask */
797 FALSE), /* pcrel_offset */
799 /* The bits 32-47 of an address. */
800 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE, /* pc_relative */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_PPC64_ADDR16_HIGHER", /* name */
809 FALSE, /* partial_inplace */
811 0xffff, /* dst_mask */
812 FALSE), /* pcrel_offset */
814 /* The bits 32-47 of an address, plus 1 if the contents of the low
815 16 bits, treated as a signed number, is negative. */
816 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 FALSE, /* pc_relative */
822 complain_overflow_dont, /* complain_on_overflow */
823 ppc64_elf_ha_reloc, /* special_function */
824 "R_PPC64_ADDR16_HIGHERA", /* name */
825 FALSE, /* partial_inplace */
827 0xffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
830 /* The bits 48-63 of an address. */
831 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC64_ADDR16_HIGHEST", /* name */
840 FALSE, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* The bits 48-63 of an address, plus 1 if the contents of the low
846 16 bits, treated as a signed number, is negative. */
847 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE, /* pc_relative */
853 complain_overflow_dont, /* complain_on_overflow */
854 ppc64_elf_ha_reloc, /* special_function */
855 "R_PPC64_ADDR16_HIGHESTA", /* name */
856 FALSE, /* partial_inplace */
858 0xffff, /* dst_mask */
859 FALSE), /* pcrel_offset */
861 /* Like ADDR64, but may be unaligned. */
862 HOWTO (R_PPC64_UADDR64, /* type */
864 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
866 FALSE, /* pc_relative */
868 complain_overflow_dont, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
870 "R_PPC64_UADDR64", /* name */
871 FALSE, /* partial_inplace */
873 ONES (64), /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* 64-bit relative relocation. */
877 HOWTO (R_PPC64_REL64, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 TRUE, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_REL64", /* name */
886 FALSE, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 TRUE), /* pcrel_offset */
891 /* 64-bit relocation to the symbol's procedure linkage table. */
892 HOWTO (R_PPC64_PLT64, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 FALSE, /* pc_relative */
898 complain_overflow_dont, /* complain_on_overflow */
899 ppc64_elf_unhandled_reloc, /* special_function */
900 "R_PPC64_PLT64", /* name */
901 FALSE, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 FALSE), /* pcrel_offset */
906 /* 64-bit PC relative relocation to the symbol's procedure linkage
908 /* FIXME: R_PPC64_PLTREL64 not supported. */
909 HOWTO (R_PPC64_PLTREL64, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 TRUE, /* pc_relative */
915 complain_overflow_dont, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc, /* special_function */
917 "R_PPC64_PLTREL64", /* name */
918 FALSE, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 TRUE), /* pcrel_offset */
923 /* 16 bit TOC-relative relocation. */
925 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
926 HOWTO (R_PPC64_TOC16, /* type */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc64_elf_toc_reloc, /* special_function */
934 "R_PPC64_TOC16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation without overflow. */
942 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
943 HOWTO (R_PPC64_TOC16_LO, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_dont, /* complain_on_overflow */
950 ppc64_elf_toc_reloc, /* special_function */
951 "R_PPC64_TOC16_LO", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation, high 16 bits. */
959 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_HI, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE, /* pc_relative */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_toc_reloc, /* special_function */
968 "R_PPC64_TOC16_HI", /* name */
969 FALSE, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
975 contents of the low 16 bits, treated as a signed number, is
978 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
979 HOWTO (R_PPC64_TOC16_HA, /* type */
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_dont, /* complain_on_overflow */
986 ppc64_elf_toc_ha_reloc, /* special_function */
987 "R_PPC64_TOC16_HA", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* 64-bit relocation; insert value of TOC base (.TOC.). */
995 /* R_PPC64_TOC 51 doubleword64 .TOC. */
996 HOWTO (R_PPC64_TOC, /* type */
998 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_bitfield, /* complain_on_overflow */
1003 ppc64_elf_toc64_reloc, /* special_function */
1004 "R_PPC64_TOC", /* name */
1005 FALSE, /* partial_inplace */
1007 ONES (64), /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like R_PPC64_GOT16, but also informs the link editor that the
1011 value to relocate may (!) refer to a PLT entry which the link
1012 editor (a) may replace with the symbol value. If the link editor
1013 is unable to fully resolve the symbol, it may (b) create a PLT
1014 entry and store the address to the new PLT entry in the GOT.
1015 This permits lazy resolution of function symbols at run time.
1016 The link editor may also skip all of this and just (c) emit a
1017 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1018 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1019 HOWTO (R_PPC64_PLTGOT16, /* type */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE, /* pc_relative */
1025 complain_overflow_signed, /* complain_on_overflow */
1026 ppc64_elf_unhandled_reloc, /* special_function */
1027 "R_PPC64_PLTGOT16", /* name */
1028 FALSE, /* partial_inplace */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1033 /* Like R_PPC64_PLTGOT16, but without overflow. */
1034 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1035 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc64_elf_unhandled_reloc, /* special_function */
1043 "R_PPC64_PLTGOT16_LO", /* name */
1044 FALSE, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1050 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 FALSE, /* pc_relative */
1057 complain_overflow_dont, /* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HI", /* name */
1060 FALSE, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1065 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1066 1 if the contents of the low 16 bits, treated as a signed number,
1068 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE, /* pc_relative */
1075 complain_overflow_dont,/* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_HA", /* name */
1078 FALSE, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1083 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1084 HOWTO (R_PPC64_ADDR16_DS, /* type */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE, /* pc_relative */
1090 complain_overflow_bitfield, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
1092 "R_PPC64_ADDR16_DS", /* name */
1093 FALSE, /* partial_inplace */
1095 0xfffc, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE, /* pc_relative */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_PPC64_ADDR16_LO_DS",/* name */
1108 FALSE, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1113 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_GOT16_DS, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE, /* pc_relative */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc, /* special_function */
1122 "R_PPC64_GOT16_DS", /* name */
1123 FALSE, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE, /* pc_relative */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_GOT16_LO_DS", /* name */
1138 FALSE, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1143 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE, /* pc_relative */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc, /* special_function */
1152 "R_PPC64_PLT16_LO_DS", /* name */
1153 FALSE, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1158 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE, /* pc_relative */
1165 complain_overflow_bitfield, /* complain_on_overflow */
1166 ppc64_elf_sectoff_reloc, /* special_function */
1167 "R_PPC64_SECTOFF_DS", /* name */
1168 FALSE, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE, /* pc_relative */
1180 complain_overflow_dont, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc, /* special_function */
1182 "R_PPC64_SECTOFF_LO_DS",/* name */
1183 FALSE, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1188 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_TOC16_DS, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE, /* pc_relative */
1195 complain_overflow_signed, /* complain_on_overflow */
1196 ppc64_elf_toc_reloc, /* special_function */
1197 "R_PPC64_TOC16_DS", /* name */
1198 FALSE, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE, /* pc_relative */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc, /* special_function */
1212 "R_PPC64_TOC16_LO_DS", /* name */
1213 FALSE, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1218 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1219 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1220 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_signed, /* complain_on_overflow */
1227 ppc64_elf_unhandled_reloc, /* special_function */
1228 "R_PPC64_PLTGOT16_DS", /* name */
1229 FALSE, /* partial_inplace */
1231 0xfffc, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1235 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1236 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE, /* pc_relative */
1242 complain_overflow_dont, /* complain_on_overflow */
1243 ppc64_elf_unhandled_reloc, /* special_function */
1244 "R_PPC64_PLTGOT16_LO_DS",/* name */
1245 FALSE, /* partial_inplace */
1247 0xfffc, /* dst_mask */
1248 FALSE), /* pcrel_offset */
1250 /* Marker relocs for TLS. */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE, /* pc_relative */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_PPC64_TLS", /* name */
1260 FALSE, /* partial_inplace */
1263 FALSE), /* pcrel_offset */
1265 HOWTO (R_PPC64_TLSGD,
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont, /* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC64_TLSGD", /* name */
1274 FALSE, /* partial_inplace */
1277 FALSE), /* pcrel_offset */
1279 HOWTO (R_PPC64_TLSLD,
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLSLD", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TOCSAVE,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TOCSAVE", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 /* Computes the load module index of the load module that contains the
1308 definition of its TLS sym. */
1309 HOWTO (R_PPC64_DTPMOD64,
1311 4, /* size (0 = byte, 1 = short, 2 = long) */
1313 FALSE, /* pc_relative */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc, /* special_function */
1317 "R_PPC64_DTPMOD64", /* name */
1318 FALSE, /* partial_inplace */
1320 ONES (64), /* dst_mask */
1321 FALSE), /* pcrel_offset */
1323 /* Computes a dtv-relative displacement, the difference between the value
1324 of sym+add and the base address of the thread-local storage block that
1325 contains the definition of sym, minus 0x8000. */
1326 HOWTO (R_PPC64_DTPREL64,
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL64", /* name */
1335 FALSE, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 /* A 16 bit dtprel reloc. */
1341 HOWTO (R_PPC64_DTPREL16,
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_signed, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16", /* name */
1350 FALSE, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1355 /* Like DTPREL16, but no overflow. */
1356 HOWTO (R_PPC64_DTPREL16_LO,
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_LO", /* name */
1365 FALSE, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1370 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HI,
1372 16, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE, /* pc_relative */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HI", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HA,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HA", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HIGHER,
1402 32, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_dont, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HIGHER", /* name */
1410 FALSE, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1417 32, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE, /* pc_relative */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_HIGHERA", /* name */
1425 FALSE, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1432 48, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHEST", /* name */
1440 FALSE, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1460 /* Like DTPREL16, but for insns with a DS field. */
1461 HOWTO (R_PPC64_DTPREL16_DS,
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_DS", /* name */
1470 FALSE, /* partial_inplace */
1472 0xfffc, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1475 /* Like DTPREL16_DS, but no overflow. */
1476 HOWTO (R_PPC64_DTPREL16_LO_DS,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_LO_DS", /* name */
1485 FALSE, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1490 /* Computes a tp-relative displacement, the difference between the value of
1491 sym+add and the value of the thread pointer (r13). */
1492 HOWTO (R_PPC64_TPREL64,
1494 4, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL64", /* name */
1501 FALSE, /* partial_inplace */
1503 ONES (64), /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* A 16 bit tprel reloc. */
1507 HOWTO (R_PPC64_TPREL16,
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_signed, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16", /* name */
1516 FALSE, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Like TPREL16, but no overflow. */
1522 HOWTO (R_PPC64_TPREL16_LO,
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_LO", /* name */
1531 FALSE, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* Like TPREL16_LO, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HI,
1538 16, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE, /* pc_relative */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HI", /* name */
1546 FALSE, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1551 /* Like TPREL16_HI, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HA,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE, /* pc_relative */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HA", /* name */
1561 FALSE, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1566 /* Like TPREL16_HI, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HIGHER,
1568 32, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE, /* pc_relative */
1573 complain_overflow_dont, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HIGHER", /* name */
1576 FALSE, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1581 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHERA,
1583 32, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE, /* pc_relative */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_HIGHERA", /* name */
1591 FALSE, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHEST,
1598 48, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE, /* pc_relative */
1603 complain_overflow_dont, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_TPREL16_HIGHEST", /* name */
1606 FALSE, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1611 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE, /* pc_relative */
1618 complain_overflow_dont, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc, /* special_function */
1620 "R_PPC64_TPREL16_HIGHESTA", /* name */
1621 FALSE, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1626 /* Like TPREL16, but for insns with a DS field. */
1627 HOWTO (R_PPC64_TPREL16_DS,
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE, /* pc_relative */
1633 complain_overflow_signed, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_DS", /* name */
1636 FALSE, /* partial_inplace */
1638 0xfffc, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1641 /* Like TPREL16_DS, but no overflow. */
1642 HOWTO (R_PPC64_TPREL16_LO_DS,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE, /* pc_relative */
1648 complain_overflow_dont, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_LO_DS", /* name */
1651 FALSE, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1658 to the first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSGD16,
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_signed, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_GOT_TLSGD16", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* Like GOT_TLSGD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_GOT_TLSGD16_LO", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1690 16, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE, /* pc_relative */
1695 complain_overflow_dont, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc, /* special_function */
1697 "R_PPC64_GOT_TLSGD16_HI", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HA", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1718 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1719 with values (sym+add)@dtpmod and zero, and computes the offset to the
1720 first entry relative to the TOC base (r2). */
1721 HOWTO (R_PPC64_GOT_TLSLD16,
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE, /* pc_relative */
1727 complain_overflow_signed, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc, /* special_function */
1729 "R_PPC64_GOT_TLSLD16", /* name */
1730 FALSE, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE), /* pcrel_offset */
1735 /* Like GOT_TLSLD16, but no overflow. */
1736 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE, /* pc_relative */
1742 complain_overflow_dont, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSLD16_LO", /* name */
1745 FALSE, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1750 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1752 16, /* rightshift */
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE, /* pc_relative */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc, /* special_function */
1759 "R_PPC64_GOT_TLSLD16_HI", /* name */
1760 FALSE, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE, /* pc_relative */
1772 complain_overflow_dont, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HA", /* name */
1775 FALSE, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1781 the offset to the entry relative to the TOC base (r2). */
1782 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 FALSE, /* pc_relative */
1788 complain_overflow_signed, /* complain_on_overflow */
1789 ppc64_elf_unhandled_reloc, /* special_function */
1790 "R_PPC64_GOT_DTPREL16_DS", /* name */
1791 FALSE, /* partial_inplace */
1793 0xfffc, /* dst_mask */
1794 FALSE), /* pcrel_offset */
1796 /* Like GOT_DTPREL16_DS, but no overflow. */
1797 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE, /* pc_relative */
1803 complain_overflow_dont, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1806 FALSE, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1813 16, /* rightshift */
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE, /* pc_relative */
1818 complain_overflow_dont, /* complain_on_overflow */
1819 ppc64_elf_unhandled_reloc, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_HI", /* name */
1821 FALSE, /* partial_inplace */
1823 0xffff, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE, /* pc_relative */
1833 complain_overflow_dont, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HA", /* name */
1836 FALSE, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE), /* pcrel_offset */
1841 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1842 offset to the entry relative to the TOC base (r2). */
1843 HOWTO (R_PPC64_GOT_TPREL16_DS,
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_signed, /* complain_on_overflow */
1850 ppc64_elf_unhandled_reloc, /* special_function */
1851 "R_PPC64_GOT_TPREL16_DS", /* name */
1852 FALSE, /* partial_inplace */
1854 0xfffc, /* dst_mask */
1855 FALSE), /* pcrel_offset */
1857 /* Like GOT_TPREL16_DS, but no overflow. */
1858 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE, /* pc_relative */
1864 complain_overflow_dont, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc, /* special_function */
1866 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1867 FALSE, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE), /* pcrel_offset */
1872 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1873 HOWTO (R_PPC64_GOT_TPREL16_HI,
1874 16, /* rightshift */
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1877 FALSE, /* pc_relative */
1879 complain_overflow_dont, /* complain_on_overflow */
1880 ppc64_elf_unhandled_reloc, /* special_function */
1881 "R_PPC64_GOT_TPREL16_HI", /* name */
1882 FALSE, /* partial_inplace */
1884 0xffff, /* dst_mask */
1885 FALSE), /* pcrel_offset */
1887 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HA,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE, /* pc_relative */
1894 complain_overflow_dont, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HA", /* name */
1897 FALSE, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE), /* pcrel_offset */
1902 HOWTO (R_PPC64_JMP_IREL, /* type */
1904 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1906 FALSE, /* pc_relative */
1908 complain_overflow_dont, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc, /* special_function */
1910 "R_PPC64_JMP_IREL", /* name */
1911 FALSE, /* partial_inplace */
1914 FALSE), /* pcrel_offset */
1916 HOWTO (R_PPC64_IRELATIVE, /* type */
1918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_dont, /* complain_on_overflow */
1923 bfd_elf_generic_reloc, /* special_function */
1924 "R_PPC64_IRELATIVE", /* name */
1925 FALSE, /* partial_inplace */
1927 ONES (64), /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* A 16 bit relative relocation. */
1931 HOWTO (R_PPC64_REL16, /* type */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 TRUE, /* pc_relative */
1937 complain_overflow_bitfield, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 "R_PPC64_REL16", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 TRUE), /* pcrel_offset */
1945 /* A 16 bit relative relocation without overflow. */
1946 HOWTO (R_PPC64_REL16_LO, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE, /* pc_relative */
1952 complain_overflow_dont,/* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_REL16_LO", /* name */
1955 FALSE, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE), /* pcrel_offset */
1960 /* The high order 16 bits of a relative address. */
1961 HOWTO (R_PPC64_REL16_HI, /* type */
1962 16, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1965 TRUE, /* pc_relative */
1967 complain_overflow_dont, /* complain_on_overflow */
1968 bfd_elf_generic_reloc, /* special_function */
1969 "R_PPC64_REL16_HI", /* name */
1970 FALSE, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address, plus 1 if the contents of
1976 the low 16 bits, treated as a signed number, is negative. */
1977 HOWTO (R_PPC64_REL16_HA, /* type */
1978 16, /* rightshift */
1979 1, /* size (0 = byte, 1 = short, 2 = long) */
1981 TRUE, /* pc_relative */
1983 complain_overflow_dont, /* complain_on_overflow */
1984 ppc64_elf_ha_reloc, /* special_function */
1985 "R_PPC64_REL16_HA", /* name */
1986 FALSE, /* partial_inplace */
1988 0xffff, /* dst_mask */
1989 TRUE), /* pcrel_offset */
1991 /* GNU extension to record C++ vtable hierarchy. */
1992 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1994 0, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE, /* pc_relative */
1998 complain_overflow_dont, /* complain_on_overflow */
1999 NULL, /* special_function */
2000 "R_PPC64_GNU_VTINHERIT", /* name */
2001 FALSE, /* partial_inplace */
2004 FALSE), /* pcrel_offset */
2006 /* GNU extension to record C++ vtable member usage. */
2007 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2009 0, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 NULL, /* special_function */
2015 "R_PPC64_GNU_VTENTRY", /* name */
2016 FALSE, /* partial_inplace */
2019 FALSE), /* pcrel_offset */
2023 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2027 ppc_howto_init (void)
2029 unsigned int i, type;
2032 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2035 type = ppc64_elf_howto_raw[i].type;
2036 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2037 / sizeof (ppc64_elf_howto_table[0])));
2038 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2042 static reloc_howto_type *
2043 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2044 bfd_reloc_code_real_type code)
2046 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2048 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2049 /* Initialize howto table if needed. */
2057 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2059 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2061 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2063 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2065 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2067 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2069 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2071 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2073 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2075 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2077 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2079 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2081 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2083 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2085 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2087 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2089 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2091 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2093 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2095 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2097 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2099 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2101 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2103 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2105 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2107 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2109 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2111 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2113 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2115 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2117 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2119 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2121 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2123 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2125 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2127 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2129 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2131 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2133 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2135 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2137 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2139 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2141 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2143 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2145 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2147 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2149 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2151 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2153 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2155 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2157 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2159 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2161 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2163 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2165 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2167 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2169 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2171 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2173 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2175 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2177 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2179 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2181 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2183 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2185 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2187 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2189 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2191 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2193 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2195 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2197 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2199 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2201 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2203 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2205 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2207 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2209 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2211 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2213 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2215 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2217 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2219 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2221 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2223 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2225 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2227 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2229 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2231 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2233 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2235 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2237 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2239 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2241 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2243 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2245 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2247 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2249 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2251 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2253 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2255 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2257 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2259 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2261 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2263 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2265 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2267 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2269 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2273 return ppc64_elf_howto_table[r];
2276 static reloc_howto_type *
2277 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2283 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2285 if (ppc64_elf_howto_raw[i].name != NULL
2286 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2287 return &ppc64_elf_howto_raw[i];
2292 /* Set the howto pointer for a PowerPC ELF reloc. */
2295 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2296 Elf_Internal_Rela *dst)
2300 /* Initialize howto table if needed. */
2301 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2304 type = ELF64_R_TYPE (dst->r_info);
2305 if (type >= (sizeof (ppc64_elf_howto_table)
2306 / sizeof (ppc64_elf_howto_table[0])))
2308 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2310 type = R_PPC64_NONE;
2312 cache_ptr->howto = ppc64_elf_howto_table[type];
2315 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2317 static bfd_reloc_status_type
2318 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2319 void *data, asection *input_section,
2320 bfd *output_bfd, char **error_message)
2322 /* If this is a relocatable link (output_bfd test tells us), just
2323 call the generic function. Any adjustment will be done at final
2325 if (output_bfd != NULL)
2326 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2327 input_section, output_bfd, error_message);
2329 /* Adjust the addend for sign extension of the low 16 bits.
2330 We won't actually be using the low 16 bits, so trashing them
2332 reloc_entry->addend += 0x8000;
2333 return bfd_reloc_continue;
2336 static bfd_reloc_status_type
2337 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2341 if (output_bfd != NULL)
2342 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2343 input_section, output_bfd, error_message);
2345 if (strcmp (symbol->section->name, ".opd") == 0
2346 && (symbol->section->owner->flags & DYNAMIC) == 0)
2348 bfd_vma dest = opd_entry_value (symbol->section,
2349 symbol->value + reloc_entry->addend,
2351 if (dest != (bfd_vma) -1)
2352 reloc_entry->addend = dest - (symbol->value
2353 + symbol->section->output_section->vma
2354 + symbol->section->output_offset);
2356 return bfd_reloc_continue;
2359 static bfd_reloc_status_type
2360 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2361 void *data, asection *input_section,
2362 bfd *output_bfd, char **error_message)
2365 enum elf_ppc64_reloc_type r_type;
2366 bfd_size_type octets;
2367 /* Assume 'at' branch hints. */
2368 bfd_boolean is_isa_v2 = TRUE;
2370 /* If this is a relocatable link (output_bfd test tells us), just
2371 call the generic function. Any adjustment will be done at final
2373 if (output_bfd != NULL)
2374 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2375 input_section, output_bfd, error_message);
2377 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2378 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2379 insn &= ~(0x01 << 21);
2380 r_type = reloc_entry->howto->type;
2381 if (r_type == R_PPC64_ADDR14_BRTAKEN
2382 || r_type == R_PPC64_REL14_BRTAKEN)
2383 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2387 /* Set 'a' bit. This is 0b00010 in BO field for branch
2388 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2389 for branch on CTR insns (BO == 1a00t or 1a01t). */
2390 if ((insn & (0x14 << 21)) == (0x04 << 21))
2392 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2402 if (!bfd_is_com_section (symbol->section))
2403 target = symbol->value;
2404 target += symbol->section->output_section->vma;
2405 target += symbol->section->output_offset;
2406 target += reloc_entry->addend;
2408 from = (reloc_entry->address
2409 + input_section->output_offset
2410 + input_section->output_section->vma);
2412 /* Invert 'y' bit if not the default. */
2413 if ((bfd_signed_vma) (target - from) < 0)
2416 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2418 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2419 input_section, output_bfd, error_message);
2422 static bfd_reloc_status_type
2423 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2424 void *data, asection *input_section,
2425 bfd *output_bfd, char **error_message)
2427 /* If this is a relocatable link (output_bfd test tells us), just
2428 call the generic function. Any adjustment will be done at final
2430 if (output_bfd != NULL)
2431 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2432 input_section, output_bfd, error_message);
2434 /* Subtract the symbol section base address. */
2435 reloc_entry->addend -= symbol->section->output_section->vma;
2436 return bfd_reloc_continue;
2439 static bfd_reloc_status_type
2440 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2441 void *data, asection *input_section,
2442 bfd *output_bfd, char **error_message)
2444 /* If this is a relocatable link (output_bfd test tells us), just
2445 call the generic function. Any adjustment will be done at final
2447 if (output_bfd != NULL)
2448 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2449 input_section, output_bfd, error_message);
2451 /* Subtract the symbol section base address. */
2452 reloc_entry->addend -= symbol->section->output_section->vma;
2454 /* Adjust the addend for sign extension of the low 16 bits. */
2455 reloc_entry->addend += 0x8000;
2456 return bfd_reloc_continue;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd != NULL)
2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2471 input_section, output_bfd, error_message);
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2475 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2479 return bfd_reloc_continue;
2482 static bfd_reloc_status_type
2483 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2484 void *data, asection *input_section,
2485 bfd *output_bfd, char **error_message)
2489 /* If this is a relocatable link (output_bfd test tells us), just
2490 call the generic function. Any adjustment will be done at final
2492 if (output_bfd != NULL)
2493 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2494 input_section, output_bfd, error_message);
2496 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2498 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2500 /* Subtract the TOC base address. */
2501 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2503 /* Adjust the addend for sign extension of the low 16 bits. */
2504 reloc_entry->addend += 0x8000;
2505 return bfd_reloc_continue;
2508 static bfd_reloc_status_type
2509 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2510 void *data, asection *input_section,
2511 bfd *output_bfd, char **error_message)
2514 bfd_size_type octets;
2516 /* If this is a relocatable link (output_bfd test tells us), just
2517 call the generic function. Any adjustment will be done at final
2519 if (output_bfd != NULL)
2520 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2521 input_section, output_bfd, error_message);
2523 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2525 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2527 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2528 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2529 return bfd_reloc_ok;
2532 static bfd_reloc_status_type
2533 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2534 void *data, asection *input_section,
2535 bfd *output_bfd, char **error_message)
2537 /* If this is a relocatable link (output_bfd test tells us), just
2538 call the generic function. Any adjustment will be done at final
2540 if (output_bfd != NULL)
2541 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2542 input_section, output_bfd, error_message);
2544 if (error_message != NULL)
2546 static char buf[60];
2547 sprintf (buf, "generic linker can't handle %s",
2548 reloc_entry->howto->name);
2549 *error_message = buf;
2551 return bfd_reloc_dangerous;
2554 /* Track GOT entries needed for a given symbol. We might need more
2555 than one got entry per symbol. */
2558 struct got_entry *next;
2560 /* The symbol addend that we'll be placing in the GOT. */
2563 /* Unlike other ELF targets, we use separate GOT entries for the same
2564 symbol referenced from different input files. This is to support
2565 automatic multiple TOC/GOT sections, where the TOC base can vary
2566 from one input file to another. After partitioning into TOC groups
2567 we merge entries within the group.
2569 Point to the BFD owning this GOT entry. */
2572 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2573 TLS_TPREL or TLS_DTPREL for tls entries. */
2574 unsigned char tls_type;
2576 /* Non-zero if got.ent points to real entry. */
2577 unsigned char is_indirect;
2579 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2582 bfd_signed_vma refcount;
2584 struct got_entry *ent;
2588 /* The same for PLT. */
2591 struct plt_entry *next;
2597 bfd_signed_vma refcount;
2602 struct ppc64_elf_obj_tdata
2604 struct elf_obj_tdata elf;
2606 /* Shortcuts to dynamic linker sections. */
2610 /* Used during garbage collection. We attach global symbols defined
2611 on removed .opd entries to this section so that the sym is removed. */
2612 asection *deleted_section;
2614 /* TLS local dynamic got entry handling. Support for multiple GOT
2615 sections means we potentially need one of these for each input bfd. */
2616 struct got_entry tlsld_got;
2618 /* A copy of relocs before they are modified for --emit-relocs. */
2619 Elf_Internal_Rela *opd_relocs;
2621 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2622 the reloc to be in the range -32768 to 32767. */
2623 unsigned int has_small_toc_reloc : 1;
2625 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2626 instruction not one we handle. */
2627 unsigned int unexpected_toc_insn : 1;
2630 #define ppc64_elf_tdata(bfd) \
2631 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2633 #define ppc64_tlsld_got(bfd) \
2634 (&ppc64_elf_tdata (bfd)->tlsld_got)
2636 #define is_ppc64_elf(bfd) \
2637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2638 && elf_object_id (bfd) == PPC64_ELF_DATA)
2640 /* Override the generic function because we store some extras. */
2643 ppc64_elf_mkobject (bfd *abfd)
2645 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2649 /* Fix bad default arch selected for a 64 bit input bfd when the
2650 default is 32 bit. */
2653 ppc64_elf_object_p (bfd *abfd)
2655 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2657 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2659 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2661 /* Relies on arch after 32 bit default being 64 bit default. */
2662 abfd->arch_info = abfd->arch_info->next;
2663 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2669 /* Support for core dump NOTE sections. */
2672 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2674 size_t offset, size;
2676 if (note->descsz != 504)
2680 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2683 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
2689 /* Make a ".reg/999" section. */
2690 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2691 size, note->descpos + offset);
2695 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2697 if (note->descsz != 136)
2700 elf_tdata (abfd)->core_pid
2701 = bfd_get_32 (abfd, note->descdata + 24);
2702 elf_tdata (abfd)->core_program
2703 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2704 elf_tdata (abfd)->core_command
2705 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2711 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2724 va_start (ap, note_type);
2725 memset (data, 0, sizeof (data));
2726 strncpy (data + 40, va_arg (ap, const char *), 16);
2727 strncpy (data + 56, va_arg (ap, const char *), 80);
2729 return elfcore_write_note (abfd, buf, bufsiz,
2730 "CORE", note_type, data, sizeof (data));
2741 va_start (ap, note_type);
2742 memset (data, 0, 112);
2743 pid = va_arg (ap, long);
2744 bfd_put_32 (abfd, pid, data + 32);
2745 cursig = va_arg (ap, int);
2746 bfd_put_16 (abfd, cursig, data + 12);
2747 greg = va_arg (ap, const void *);
2748 memcpy (data + 112, greg, 384);
2749 memset (data + 496, 0, 8);
2751 return elfcore_write_note (abfd, buf, bufsiz,
2752 "CORE", note_type, data, sizeof (data));
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2767 { NULL, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type {
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection **func_sec;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2816 if (!sec->used_by_bfd)
2818 struct _ppc64_elf_section_data *sdata;
2819 bfd_size_type amt = sizeof (*sdata);
2821 sdata = bfd_zalloc (abfd, amt);
2824 sec->used_by_bfd = sdata;
2827 return _bfd_elf_new_section_hook (abfd, sec);
2830 static struct _opd_sec_data *
2831 get_opd_info (asection * sec)
2834 && ppc64_elf_section_data (sec) != NULL
2835 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2836 return &ppc64_elf_section_data (sec)->u.opd;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap, const void *bp)
2848 const asymbol *a = * (const asymbol **) ap;
2849 const asymbol *b = * (const asymbol **) bp;
2851 /* Section symbols first. */
2852 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2854 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2857 /* then .opd symbols. */
2858 if (strcmp (a->section->name, ".opd") == 0
2859 && strcmp (b->section->name, ".opd") != 0)
2861 if (strcmp (a->section->name, ".opd") != 0
2862 && strcmp (b->section->name, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 == (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2872 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 != (SEC_CODE | SEC_ALLOC)
2874 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 == (SEC_CODE | SEC_ALLOC))
2878 if (synthetic_relocatable)
2880 if (a->section->id < b->section->id)
2883 if (a->section->id > b->section->id)
2887 if (a->value + a->section->vma < b->value + b->section->vma)
2890 if (a->value + a->section->vma > b->value + b->section->vma)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2898 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2901 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2904 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2907 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2910 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2913 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2916 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2933 mid = (lo + hi) >> 1;
2934 if (syms[mid]->value + syms[mid]->section->vma < value)
2936 else if (syms[mid]->value + syms[mid]->section->vma > value)
2946 mid = (lo + hi) >> 1;
2947 if (syms[mid]->section->id < id)
2949 else if (syms[mid]->section->id > id)
2951 else if (syms[mid]->value < value)
2953 else if (syms[mid]->value > value)
2963 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2965 bfd_vma vma = *(bfd_vma *) ptr;
2966 return ((section->flags & SEC_ALLOC) != 0
2967 && section->vma <= vma
2968 && vma < section->vma + section->size);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2976 long static_count, asymbol **static_syms,
2977 long dyn_count, asymbol **dyn_syms,
2984 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2986 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2991 opd = bfd_get_section_by_name (abfd, ".opd");
2995 symcount = static_count;
2997 symcount += dyn_count;
3001 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3005 if (!relocatable && static_count != 0 && dyn_count != 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms, static_syms, static_count * sizeof (*syms));
3009 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3011 else if (!relocatable && static_count == 0)
3012 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3014 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3016 synthetic_relocatable = relocatable;
3017 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3019 if (!relocatable && symcount > 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i = 1, j = 1; i < symcount; ++i)
3026 if (syms[i - 1]->value + syms[i - 1]->section->vma
3027 != syms[i]->value + syms[i]->section->vma)
3028 syms[j++] = syms[i];
3033 if (strcmp (syms[i]->section->name, ".opd") == 0)
3037 for (; i < symcount; ++i)
3038 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3039 != (SEC_CODE | SEC_ALLOC))
3040 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3044 for (; i < symcount; ++i)
3045 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3049 for (; i < symcount; ++i)
3050 if (strcmp (syms[i]->section->name, ".opd") != 0)
3054 for (; i < symcount; ++i)
3055 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3056 != (SEC_CODE | SEC_ALLOC))
3064 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3069 if (opdsymend == secsymend)
3072 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3073 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3077 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3084 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3088 while (r < opd->relocation + relcount
3089 && r->address < syms[i]->value + opd->vma)
3092 if (r == opd->relocation + relcount)
3095 if (r->address != syms[i]->value + opd->vma)
3098 if (r->howto->type != R_PPC64_ADDR64)
3101 sym = *r->sym_ptr_ptr;
3102 if (!sym_exists_at (syms, opdsymend, symcount,
3103 sym->section->id, sym->value + r->addend))
3106 size += sizeof (asymbol);
3107 size += strlen (syms[i]->name) + 2;
3111 s = *ret = bfd_malloc (size);
3118 names = (char *) (s + count);
3120 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3124 while (r < opd->relocation + relcount
3125 && r->address < syms[i]->value + opd->vma)
3128 if (r == opd->relocation + relcount)
3131 if (r->address != syms[i]->value + opd->vma)
3134 if (r->howto->type != R_PPC64_ADDR64)
3137 sym = *r->sym_ptr_ptr;
3138 if (!sym_exists_at (syms, opdsymend, symcount,
3139 sym->section->id, sym->value + r->addend))
3144 s->flags |= BSF_SYNTHETIC;
3145 s->section = sym->section;
3146 s->value = sym->value + r->addend;
3149 len = strlen (syms[i]->name);
3150 memcpy (names, syms[i]->name, len + 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s->udata.p = syms[i];
3161 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3165 bfd_vma glink_vma = 0, resolv_vma = 0;
3166 asection *dynamic, *glink = NULL, *relplt = NULL;
3169 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3173 free_contents_and_exit:
3181 for (i = secsymend; i < opdsymend; ++i)
3185 /* Ignore bogus symbols. */
3186 if (syms[i]->value > opd->size - 8)
3189 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3190 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3193 size += sizeof (asymbol);
3194 size += strlen (syms[i]->name) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3202 bfd_byte *dynbuf, *extdyn, *extdynend;
3204 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3206 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3207 goto free_contents_and_exit;
3209 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3210 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3213 extdynend = extdyn + dynamic->size;
3214 for (; extdyn < extdynend; extdyn += extdynsize)
3216 Elf_Internal_Dyn dyn;
3217 (*swap_dyn_in) (abfd, extdyn, &dyn);
3219 if (dyn.d_tag == DT_NULL)
3222 if (dyn.d_tag == DT_PPC64_GLINK)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma = dyn.d_un.d_val + 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink = bfd_sections_find_if (abfd, section_covers_vma,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd, glink, buf,
3245 glink_vma + 4 - glink->vma, 4))
3247 unsigned int insn = bfd_get_32 (abfd, buf);
3249 if ((insn & ~0x3fffffc) == 0)
3250 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3254 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3256 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3259 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3260 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3261 goto free_contents_and_exit;
3263 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3264 size += plt_count * sizeof (asymbol);
3266 p = relplt->relocation;
3267 for (i = 0; i < plt_count; i++, p++)
3269 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3271 size += sizeof ("+0x") - 1 + 16;
3276 s = *ret = bfd_malloc (size);
3278 goto free_contents_and_exit;
3280 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3282 for (i = secsymend; i < opdsymend; ++i)
3286 if (syms[i]->value > opd->size - 8)
3289 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3290 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3294 asection *sec = abfd->sections;
3301 long mid = (lo + hi) >> 1;
3302 if (syms[mid]->section->vma < ent)
3304 else if (syms[mid]->section->vma > ent)
3308 sec = syms[mid]->section;
3313 if (lo >= hi && lo > codesecsym)
3314 sec = syms[lo - 1]->section;
3316 for (; sec != NULL; sec = sec->next)
3320 /* SEC_LOAD may not be set if SEC is from a separate debug
3322 if ((sec->flags & SEC_ALLOC) == 0)
3324 if ((sec->flags & SEC_CODE) != 0)
3327 s->flags |= BSF_SYNTHETIC;
3328 s->value = ent - s->section->vma;
3331 len = strlen (syms[i]->name);
3332 memcpy (names, syms[i]->name, len + 1);
3334 /* Have udata.p point back to the original symbol this
3335 synthetic symbol was derived from. */
3336 s->udata.p = syms[i];
3342 if (glink != NULL && relplt != NULL)
3346 /* Add a symbol for the main glink trampoline. */
3347 memset (s, 0, sizeof *s);
3349 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3351 s->value = resolv_vma - glink->vma;
3353 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3354 names += sizeof ("__glink_PLTresolve");
3359 /* FIXME: It would be very much nicer to put sym@plt on the
3360 stub rather than on the glink branch table entry. The
3361 objdump disassembler would then use a sensible symbol
3362 name on plt calls. The difficulty in doing so is
3363 a) finding the stubs, and,
3364 b) matching stubs against plt entries, and,
3365 c) there can be multiple stubs for a given plt entry.
3367 Solving (a) could be done by code scanning, but older
3368 ppc64 binaries used different stubs to current code.
3369 (b) is the tricky one since you need to known the toc
3370 pointer for at least one function that uses a pic stub to
3371 be able to calculate the plt address referenced.
3372 (c) means gdb would need to set multiple breakpoints (or
3373 find the glink branch itself) when setting breakpoints
3374 for pending shared library loads. */
3375 p = relplt->relocation;
3376 for (i = 0; i < plt_count; i++, p++)
3380 *s = **p->sym_ptr_ptr;
3381 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3382 we are defining a symbol, ensure one of them is set. */
3383 if ((s->flags & BSF_LOCAL) == 0)
3384 s->flags |= BSF_GLOBAL;
3385 s->flags |= BSF_SYNTHETIC;
3387 s->value = glink_vma - glink->vma;
3390 len = strlen ((*p->sym_ptr_ptr)->name);
3391 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3395 memcpy (names, "+0x", sizeof ("+0x") - 1);
3396 names += sizeof ("+0x") - 1;
3397 bfd_sprintf_vma (abfd, names, p->addend);
3398 names += strlen (names);
3400 memcpy (names, "@plt", sizeof ("@plt"));
3401 names += sizeof ("@plt");
3416 /* The following functions are specific to the ELF linker, while
3417 functions above are used generally. Those named ppc64_elf_* are
3418 called by the main ELF linker code. They appear in this file more
3419 or less in the order in which they are called. eg.
3420 ppc64_elf_check_relocs is called early in the link process,
3421 ppc64_elf_finish_dynamic_sections is one of the last functions
3424 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3425 functions have both a function code symbol and a function descriptor
3426 symbol. A call to foo in a relocatable object file looks like:
3433 The function definition in another object file might be:
3437 . .quad .TOC.@tocbase
3443 When the linker resolves the call during a static link, the branch
3444 unsurprisingly just goes to .foo and the .opd information is unused.
3445 If the function definition is in a shared library, things are a little
3446 different: The call goes via a plt call stub, the opd information gets
3447 copied to the plt, and the linker patches the nop.
3455 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3456 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3457 . std 2,40(1) # this is the general idea
3465 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3467 The "reloc ()" notation is supposed to indicate that the linker emits
3468 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3471 What are the difficulties here? Well, firstly, the relocations
3472 examined by the linker in check_relocs are against the function code
3473 sym .foo, while the dynamic relocation in the plt is emitted against
3474 the function descriptor symbol, foo. Somewhere along the line, we need
3475 to carefully copy dynamic link information from one symbol to the other.
3476 Secondly, the generic part of the elf linker will make .foo a dynamic
3477 symbol as is normal for most other backends. We need foo dynamic
3478 instead, at least for an application final link. However, when
3479 creating a shared library containing foo, we need to have both symbols
3480 dynamic so that references to .foo are satisfied during the early
3481 stages of linking. Otherwise the linker might decide to pull in a
3482 definition from some other object, eg. a static library.
3484 Update: As of August 2004, we support a new convention. Function
3485 calls may use the function descriptor symbol, ie. "bl foo". This
3486 behaves exactly as "bl .foo". */
3488 /* Of those relocs that might be copied as dynamic relocs, this function
3489 selects those that must be copied when linking a shared library,
3490 even when the symbol is local. */
3493 must_be_dyn_reloc (struct bfd_link_info *info,
3494 enum elf_ppc64_reloc_type r_type)
3506 case R_PPC64_TPREL16:
3507 case R_PPC64_TPREL16_LO:
3508 case R_PPC64_TPREL16_HI:
3509 case R_PPC64_TPREL16_HA:
3510 case R_PPC64_TPREL16_DS:
3511 case R_PPC64_TPREL16_LO_DS:
3512 case R_PPC64_TPREL16_HIGHER:
3513 case R_PPC64_TPREL16_HIGHERA:
3514 case R_PPC64_TPREL16_HIGHEST:
3515 case R_PPC64_TPREL16_HIGHESTA:
3516 case R_PPC64_TPREL64:
3517 return !info->executable;
3521 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3522 copying dynamic variables from a shared lib into an app's dynbss
3523 section, and instead use a dynamic relocation to point into the
3524 shared lib. With code that gcc generates, it's vital that this be
3525 enabled; In the PowerPC64 ABI, the address of a function is actually
3526 the address of a function descriptor, which resides in the .opd
3527 section. gcc uses the descriptor directly rather than going via the
3528 GOT as some other ABI's do, which means that initialized function
3529 pointers must reference the descriptor. Thus, a function pointer
3530 initialized to the address of a function in a shared library will
3531 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3532 redefines the function descriptor symbol to point to the copy. This
3533 presents a problem as a plt entry for that function is also
3534 initialized from the function descriptor symbol and the copy reloc
3535 may not be initialized first. */
3536 #define ELIMINATE_COPY_RELOCS 1
3538 /* Section name for stubs is the associated section name plus this
3540 #define STUB_SUFFIX ".stub"
3543 ppc_stub_long_branch:
3544 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3545 destination, but a 24 bit branch in a stub section will reach.
3548 ppc_stub_plt_branch:
3549 Similar to the above, but a 24 bit branch in the stub section won't
3550 reach its destination.
3551 . addis %r12,%r2,xxx@toc@ha
3552 . ld %r11,xxx@toc@l(%r12)
3557 Used to call a function in a shared library. If it so happens that
3558 the plt entry referenced crosses a 64k boundary, then an extra
3559 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3560 . addis %r12,%r2,xxx@toc@ha
3562 . ld %r11,xxx+0@toc@l(%r12)
3564 . ld %r2,xxx+8@toc@l(%r12)
3565 . ld %r11,xxx+16@toc@l(%r12)
3568 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3569 code to adjust the value and save r2 to support multiple toc sections.
3570 A ppc_stub_long_branch with an r2 offset looks like:
3572 . addis %r2,%r2,off@ha
3573 . addi %r2,%r2,off@l
3576 A ppc_stub_plt_branch with an r2 offset looks like:
3578 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx@toc@l(%r12)
3580 . addis %r2,%r2,off@ha
3581 . addi %r2,%r2,off@l
3585 In cases where the "addis" instruction would add zero, the "addis" is
3586 omitted and following instructions modified slightly in some cases.
3589 enum ppc_stub_type {
3591 ppc_stub_long_branch,
3592 ppc_stub_long_branch_r2off,
3593 ppc_stub_plt_branch,
3594 ppc_stub_plt_branch_r2off,
3596 ppc_stub_plt_call_r2save
3599 struct ppc_stub_hash_entry {
3601 /* Base hash table entry structure. */
3602 struct bfd_hash_entry root;
3604 enum ppc_stub_type stub_type;
3606 /* The stub section. */
3609 /* Offset within stub_sec of the beginning of this stub. */
3610 bfd_vma stub_offset;
3612 /* Given the symbol's value and its section we can determine its final
3613 value when building the stubs (so the stub knows where to jump. */
3614 bfd_vma target_value;
3615 asection *target_section;
3617 /* The symbol table entry, if any, that this was derived from. */
3618 struct ppc_link_hash_entry *h;
3619 struct plt_entry *plt_ent;
3621 /* And the reloc addend that this was derived from. */
3624 /* Where this stub is being called from, or, in the case of combined
3625 stub sections, the first input section in the group. */
3629 struct ppc_branch_hash_entry {
3631 /* Base hash table entry structure. */
3632 struct bfd_hash_entry root;
3634 /* Offset within branch lookup table. */
3635 unsigned int offset;
3637 /* Generation marker. */
3641 struct ppc_link_hash_entry
3643 struct elf_link_hash_entry elf;
3646 /* A pointer to the most recently used stub hash entry against this
3648 struct ppc_stub_hash_entry *stub_cache;
3650 /* A pointer to the next symbol starting with a '.' */
3651 struct ppc_link_hash_entry *next_dot_sym;
3654 /* Track dynamic relocs copied for this symbol. */
3655 struct elf_dyn_relocs *dyn_relocs;
3657 /* Link between function code and descriptor symbols. */
3658 struct ppc_link_hash_entry *oh;
3660 /* Flag function code and descriptor symbols. */
3661 unsigned int is_func:1;
3662 unsigned int is_func_descriptor:1;
3663 unsigned int fake:1;
3665 /* Whether global opd/toc sym has been adjusted or not.
3666 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3667 should be set for all globals defined in any opd/toc section. */
3668 unsigned int adjust_done:1;
3670 /* Set if we twiddled this symbol to weak at some stage. */
3671 unsigned int was_undefined:1;
3673 /* Contexts in which symbol is used in the GOT (or TOC).
3674 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3675 corresponding relocs are encountered during check_relocs.
3676 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3677 indicate the corresponding GOT entry type is not needed.
3678 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3679 a TPREL one. We use a separate flag rather than setting TPREL
3680 just for convenience in distinguishing the two cases. */
3681 #define TLS_GD 1 /* GD reloc. */
3682 #define TLS_LD 2 /* LD reloc. */
3683 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3684 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3685 #define TLS_TLS 16 /* Any TLS reloc. */
3686 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3687 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3688 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3689 unsigned char tls_mask;
3692 /* ppc64 ELF linker hash table. */
3694 struct ppc_link_hash_table
3696 struct elf_link_hash_table elf;
3698 /* The stub hash table. */
3699 struct bfd_hash_table stub_hash_table;
3701 /* Another hash table for plt_branch stubs. */
3702 struct bfd_hash_table branch_hash_table;
3704 /* Hash table for function prologue tocsave. */
3705 htab_t tocsave_htab;
3707 /* Linker stub bfd. */
3710 /* Linker call-backs. */
3711 asection * (*add_stub_section) (const char *, asection *);
3712 void (*layout_sections_again) (void);
3714 /* Array to keep track of which stub sections have been created, and
3715 information on stub grouping. */
3717 /* This is the section to which stubs in the group will be attached. */
3719 /* The stub section. */
3721 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3725 /* Temp used when calculating TOC pointers. */
3728 asection *toc_first_sec;
3730 /* Highest input section id. */
3733 /* Highest output section index. */
3736 /* Used when adding symbols. */
3737 struct ppc_link_hash_entry *dot_syms;
3739 /* List of input sections for each output section. */
3740 asection **input_list;
3742 /* Short-cuts to get to dynamic linker sections. */
3754 asection *glink_eh_frame;
3756 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3757 struct ppc_link_hash_entry *tls_get_addr;
3758 struct ppc_link_hash_entry *tls_get_addr_fd;
3760 /* The size of reliplt used by got entry relocs. */
3761 bfd_size_type got_reli_size;
3764 unsigned long stub_count[ppc_stub_plt_call_r2save];
3766 /* Number of stubs against global syms. */
3767 unsigned long stub_globals;
3769 /* Alignment of PLT call stubs. */
3770 unsigned int plt_stub_align:4;
3772 /* Set if PLT call stubs should load r11. */
3773 unsigned int plt_static_chain:1;
3775 /* Set if PLT call stubs need a read-read barrier. */
3776 unsigned int plt_thread_safe:1;
3778 /* Set if we should emit symbols for stubs. */
3779 unsigned int emit_stub_syms:1;
3781 /* Set if __tls_get_addr optimization should not be done. */
3782 unsigned int no_tls_get_addr_opt:1;
3784 /* Support for multiple toc sections. */
3785 unsigned int do_multi_toc:1;
3786 unsigned int multi_toc_needed:1;
3787 unsigned int second_toc_pass:1;
3788 unsigned int do_toc_opt:1;
3791 unsigned int stub_error:1;
3793 /* Temp used by ppc64_elf_process_dot_syms. */
3794 unsigned int twiddled_syms:1;
3796 /* Incremented every time we size stubs. */
3797 unsigned int stub_iteration;
3799 /* Small local sym cache. */
3800 struct sym_cache sym_cache;
3803 /* Rename some of the generic section flags to better document how they
3806 /* Nonzero if this section has TLS related relocations. */
3807 #define has_tls_reloc sec_flg0
3809 /* Nonzero if this section has a call to __tls_get_addr. */
3810 #define has_tls_get_addr_call sec_flg1
3812 /* Nonzero if this section has any toc or got relocs. */
3813 #define has_toc_reloc sec_flg2
3815 /* Nonzero if this section has a call to another section that uses
3817 #define makes_toc_func_call sec_flg3
3819 /* Recursion protection when determining above flag. */
3820 #define call_check_in_progress sec_flg4
3821 #define call_check_done sec_flg5
3823 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3825 #define ppc_hash_table(p) \
3826 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3827 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3829 #define ppc_stub_hash_lookup(table, string, create, copy) \
3830 ((struct ppc_stub_hash_entry *) \
3831 bfd_hash_lookup ((table), (string), (create), (copy)))
3833 #define ppc_branch_hash_lookup(table, string, create, copy) \
3834 ((struct ppc_branch_hash_entry *) \
3835 bfd_hash_lookup ((table), (string), (create), (copy)))
3837 /* Create an entry in the stub hash table. */
3839 static struct bfd_hash_entry *
3840 stub_hash_newfunc (struct bfd_hash_entry *entry,
3841 struct bfd_hash_table *table,
3844 /* Allocate the structure if it has not already been allocated by a
3848 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3853 /* Call the allocation method of the superclass. */
3854 entry = bfd_hash_newfunc (entry, table, string);
3857 struct ppc_stub_hash_entry *eh;
3859 /* Initialize the local fields. */
3860 eh = (struct ppc_stub_hash_entry *) entry;
3861 eh->stub_type = ppc_stub_none;
3862 eh->stub_sec = NULL;
3863 eh->stub_offset = 0;
3864 eh->target_value = 0;
3865 eh->target_section = NULL;
3873 /* Create an entry in the branch hash table. */
3875 static struct bfd_hash_entry *
3876 branch_hash_newfunc (struct bfd_hash_entry *entry,
3877 struct bfd_hash_table *table,
3880 /* Allocate the structure if it has not already been allocated by a
3884 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3889 /* Call the allocation method of the superclass. */
3890 entry = bfd_hash_newfunc (entry, table, string);
3893 struct ppc_branch_hash_entry *eh;
3895 /* Initialize the local fields. */
3896 eh = (struct ppc_branch_hash_entry *) entry;
3904 /* Create an entry in a ppc64 ELF linker hash table. */
3906 static struct bfd_hash_entry *
3907 link_hash_newfunc (struct bfd_hash_entry *entry,
3908 struct bfd_hash_table *table,
3911 /* Allocate the structure if it has not already been allocated by a
3915 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3920 /* Call the allocation method of the superclass. */
3921 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3924 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3926 memset (&eh->u.stub_cache, 0,
3927 (sizeof (struct ppc_link_hash_entry)
3928 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3930 /* When making function calls, old ABI code references function entry
3931 points (dot symbols), while new ABI code references the function
3932 descriptor symbol. We need to make any combination of reference and
3933 definition work together, without breaking archive linking.
3935 For a defined function "foo" and an undefined call to "bar":
3936 An old object defines "foo" and ".foo", references ".bar" (possibly
3938 A new object defines "foo" and references "bar".
3940 A new object thus has no problem with its undefined symbols being
3941 satisfied by definitions in an old object. On the other hand, the
3942 old object won't have ".bar" satisfied by a new object.
3944 Keep a list of newly added dot-symbols. */
3946 if (string[0] == '.')
3948 struct ppc_link_hash_table *htab;
3950 htab = (struct ppc_link_hash_table *) table;
3951 eh->u.next_dot_sym = htab->dot_syms;
3952 htab->dot_syms = eh;
3959 struct tocsave_entry {
3965 tocsave_htab_hash (const void *p)
3967 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
3968 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
3972 tocsave_htab_eq (const void *p1, const void *p2)
3974 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
3975 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
3976 return e1->sec == e2->sec && e1->offset == e2->offset;
3979 /* Create a ppc64 ELF linker hash table. */
3981 static struct bfd_link_hash_table *
3982 ppc64_elf_link_hash_table_create (bfd *abfd)
3984 struct ppc_link_hash_table *htab;
3985 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3987 htab = bfd_zmalloc (amt);
3991 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3992 sizeof (struct ppc_link_hash_entry),
3999 /* Init the stub hash table too. */
4000 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4001 sizeof (struct ppc_stub_hash_entry)))
4004 /* And the branch hash table. */
4005 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4006 sizeof (struct ppc_branch_hash_entry)))
4009 htab->tocsave_htab = htab_try_create (1024,
4013 if (htab->tocsave_htab == NULL)
4016 /* Initializing two fields of the union is just cosmetic. We really
4017 only care about glist, but when compiled on a 32-bit host the
4018 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4019 debugger inspection of these fields look nicer. */
4020 htab->elf.init_got_refcount.refcount = 0;
4021 htab->elf.init_got_refcount.glist = NULL;
4022 htab->elf.init_plt_refcount.refcount = 0;
4023 htab->elf.init_plt_refcount.glist = NULL;
4024 htab->elf.init_got_offset.offset = 0;
4025 htab->elf.init_got_offset.glist = NULL;
4026 htab->elf.init_plt_offset.offset = 0;
4027 htab->elf.init_plt_offset.glist = NULL;
4029 return &htab->elf.root;
4032 /* Free the derived linker hash table. */
4035 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4037 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4039 bfd_hash_table_free (&htab->stub_hash_table);
4040 bfd_hash_table_free (&htab->branch_hash_table);
4041 if (htab->tocsave_htab)
4042 htab_delete (htab->tocsave_htab);
4043 _bfd_generic_link_hash_table_free (hash);
4046 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4049 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4051 struct ppc_link_hash_table *htab;
4053 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4055 /* Always hook our dynamic sections into the first bfd, which is the
4056 linker created stub bfd. This ensures that the GOT header is at
4057 the start of the output TOC section. */
4058 htab = ppc_hash_table (info);
4061 htab->stub_bfd = abfd;
4062 htab->elf.dynobj = abfd;
4065 /* Build a name for an entry in the stub hash table. */
4068 ppc_stub_name (const asection *input_section,
4069 const asection *sym_sec,
4070 const struct ppc_link_hash_entry *h,
4071 const Elf_Internal_Rela *rel)
4076 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4077 offsets from a sym as a branch target? In fact, we could
4078 probably assume the addend is always zero. */
4079 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4083 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4084 stub_name = bfd_malloc (len);
4085 if (stub_name == NULL)
4088 sprintf (stub_name, "%08x.%s+%x",
4089 input_section->id & 0xffffffff,
4090 h->elf.root.root.string,
4091 (int) rel->r_addend & 0xffffffff);
4095 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4096 stub_name = bfd_malloc (len);
4097 if (stub_name == NULL)
4100 sprintf (stub_name, "%08x.%x:%x+%x",
4101 input_section->id & 0xffffffff,
4102 sym_sec->id & 0xffffffff,
4103 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4104 (int) rel->r_addend & 0xffffffff);
4106 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4107 stub_name[len - 2] = 0;
4111 /* Look up an entry in the stub hash. Stub entries are cached because
4112 creating the stub name takes a bit of time. */
4114 static struct ppc_stub_hash_entry *
4115 ppc_get_stub_entry (const asection *input_section,
4116 const asection *sym_sec,
4117 struct ppc_link_hash_entry *h,
4118 const Elf_Internal_Rela *rel,
4119 struct ppc_link_hash_table *htab)
4121 struct ppc_stub_hash_entry *stub_entry;
4122 const asection *id_sec;
4124 /* If this input section is part of a group of sections sharing one
4125 stub section, then use the id of the first section in the group.
4126 Stub names need to include a section id, as there may well be
4127 more than one stub used to reach say, printf, and we need to
4128 distinguish between them. */
4129 id_sec = htab->stub_group[input_section->id].link_sec;
4131 if (h != NULL && h->u.stub_cache != NULL
4132 && h->u.stub_cache->h == h
4133 && h->u.stub_cache->id_sec == id_sec)
4135 stub_entry = h->u.stub_cache;
4141 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4142 if (stub_name == NULL)
4145 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4146 stub_name, FALSE, FALSE);
4148 h->u.stub_cache = stub_entry;
4156 /* Add a new stub entry to the stub hash. Not all fields of the new
4157 stub entry are initialised. */
4159 static struct ppc_stub_hash_entry *
4160 ppc_add_stub (const char *stub_name,
4162 struct bfd_link_info *info)
4164 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4167 struct ppc_stub_hash_entry *stub_entry;
4169 link_sec = htab->stub_group[section->id].link_sec;
4170 stub_sec = htab->stub_group[section->id].stub_sec;
4171 if (stub_sec == NULL)
4173 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4174 if (stub_sec == NULL)
4180 namelen = strlen (link_sec->name);
4181 len = namelen + sizeof (STUB_SUFFIX);
4182 s_name = bfd_alloc (htab->stub_bfd, len);
4186 memcpy (s_name, link_sec->name, namelen);
4187 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4188 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4189 if (stub_sec == NULL)
4191 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4193 htab->stub_group[section->id].stub_sec = stub_sec;
4196 /* Enter this entry into the linker stub hash table. */
4197 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4199 if (stub_entry == NULL)
4201 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4202 section->owner, stub_name);
4206 stub_entry->stub_sec = stub_sec;
4207 stub_entry->stub_offset = 0;
4208 stub_entry->id_sec = link_sec;
4212 /* Create sections for linker generated code. */
4215 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4217 struct ppc_link_hash_table *htab;
4220 htab = ppc_hash_table (info);
4224 /* Create .sfpr for code to save and restore fp regs. */
4225 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4226 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4227 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4229 if (htab->sfpr == NULL
4230 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4233 /* Create .glink for lazy dynamic linking support. */
4234 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4236 if (htab->glink == NULL
4237 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4240 if (!info->no_ld_generated_unwind_info)
4242 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4243 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4244 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4247 if (htab->glink_eh_frame == NULL
4248 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4252 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4253 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4254 if (htab->iplt == NULL
4255 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4263 if (htab->reliplt == NULL
4264 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4267 /* Create branch lookup table for plt_branch stubs. */
4268 flags = (SEC_ALLOC | SEC_LOAD
4269 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4270 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4272 if (htab->brlt == NULL
4273 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4279 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4280 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4281 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4284 if (htab->relbrlt == NULL
4285 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4291 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4292 not already done. */
4295 create_got_section (bfd *abfd, struct bfd_link_info *info)
4297 asection *got, *relgot;
4299 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4301 if (!is_ppc64_elf (abfd))
4308 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4311 htab->got = bfd_get_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,
5526 bfd_boolean in_code_sec)
5528 bfd *opd_bfd = opd_sec->owner;
5529 Elf_Internal_Rela *relocs;
5530 Elf_Internal_Rela *lo, *hi, *look;
5533 /* No relocs implies we are linking a --just-symbols object, or looking
5534 at a final linked executable with addr2line or somesuch. */
5535 if (opd_sec->reloc_count == 0)
5539 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5540 return (bfd_vma) -1;
5542 val = bfd_get_64 (opd_bfd, buf);
5543 if (code_sec != NULL)
5545 asection *sec, *likely = NULL;
5551 && val < sec->vma + sec->size)
5557 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5559 && (sec->flags & SEC_LOAD) != 0
5560 && (sec->flags & SEC_ALLOC) != 0)
5565 if (code_off != NULL)
5566 *code_off = val - likely->vma;
5572 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5574 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5576 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5578 /* Go find the opd reloc at the sym address. */
5580 BFD_ASSERT (lo != NULL);
5581 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5585 look = lo + (hi - lo) / 2;
5586 if (look->r_offset < offset)
5588 else if (look->r_offset > offset)
5592 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5594 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5595 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5597 unsigned long symndx = ELF64_R_SYM (look->r_info);
5600 if (symndx < symtab_hdr->sh_info
5601 || elf_sym_hashes (opd_bfd) == NULL)
5603 Elf_Internal_Sym *sym;
5605 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5608 size_t symcnt = symtab_hdr->sh_info;
5609 if (elf_sym_hashes (opd_bfd) == NULL)
5610 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5611 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5612 0, NULL, NULL, NULL);
5615 symtab_hdr->contents = (bfd_byte *) sym;
5619 val = sym->st_value;
5620 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5621 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5625 struct elf_link_hash_entry **sym_hashes;
5626 struct elf_link_hash_entry *rh;
5628 sym_hashes = elf_sym_hashes (opd_bfd);
5629 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5630 rh = elf_follow_link (rh);
5631 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5632 || rh->root.type == bfd_link_hash_defweak);
5633 val = rh->root.u.def.value;
5634 sec = rh->root.u.def.section;
5636 val += look->r_addend;
5637 if (code_off != NULL)
5639 if (code_sec != NULL)
5641 if (in_code_sec && *code_sec != sec)
5646 if (sec != NULL && sec->output_section != NULL)
5647 val += sec->output_section->vma + sec->output_offset;
5656 /* If the ELF symbol SYM might be a function in SEC, return the
5657 function size and set *CODE_OFF to the function's entry point,
5658 otherwise return zero. */
5660 static bfd_size_type
5661 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
5666 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
5667 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
5671 if (!(sym->flags & BSF_SYNTHETIC))
5672 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
5674 if (strcmp (sym->section->name, ".opd") == 0)
5676 if (opd_entry_value (sym->section, sym->value,
5677 &sec, code_off, TRUE) == (bfd_vma) -1)
5679 /* An old ABI binary with dot-syms has a size of 24 on the .opd
5680 symbol. This size has nothing to do with the code size of the
5681 function, which is what we're supposed to return, but the
5682 code size isn't available without looking up the dot-sym.
5683 However, doing that would be a waste of time particularly
5684 since elf_find_function will look at the dot-sym anyway.
5685 Now, elf_find_function will keep the largest size of any
5686 function sym found at the code address of interest, so return
5687 1 here to avoid it incorrectly caching a larger function size
5688 for a small function. This does mean we return the wrong
5689 size for a new-ABI function of size 24, but all that does is
5690 disable caching for such functions. */
5696 if (sym->section != sec)
5698 *code_off = sym->value;
5705 /* Return true if symbol is defined in a regular object file. */
5708 is_static_defined (struct elf_link_hash_entry *h)
5710 return ((h->root.type == bfd_link_hash_defined
5711 || h->root.type == bfd_link_hash_defweak)
5712 && h->root.u.def.section != NULL
5713 && h->root.u.def.section->output_section != NULL);
5716 /* If FDH is a function descriptor symbol, return the associated code
5717 entry symbol if it is defined. Return NULL otherwise. */
5719 static struct ppc_link_hash_entry *
5720 defined_code_entry (struct ppc_link_hash_entry *fdh)
5722 if (fdh->is_func_descriptor)
5724 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5725 if (fh->elf.root.type == bfd_link_hash_defined
5726 || fh->elf.root.type == bfd_link_hash_defweak)
5732 /* If FH is a function code entry symbol, return the associated
5733 function descriptor symbol if it is defined. Return NULL otherwise. */
5735 static struct ppc_link_hash_entry *
5736 defined_func_desc (struct ppc_link_hash_entry *fh)
5739 && fh->oh->is_func_descriptor)
5741 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5742 if (fdh->elf.root.type == bfd_link_hash_defined
5743 || fdh->elf.root.type == bfd_link_hash_defweak)
5749 /* Mark all our entry sym sections, both opd and code section. */
5752 ppc64_elf_gc_keep (struct bfd_link_info *info)
5754 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5755 struct bfd_sym_chain *sym;
5760 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5762 struct ppc_link_hash_entry *eh, *fh;
5765 eh = (struct ppc_link_hash_entry *)
5766 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5769 if (eh->elf.root.type != bfd_link_hash_defined
5770 && eh->elf.root.type != bfd_link_hash_defweak)
5773 fh = defined_code_entry (eh);
5776 sec = fh->elf.root.u.def.section;
5777 sec->flags |= SEC_KEEP;
5779 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5780 && opd_entry_value (eh->elf.root.u.def.section,
5781 eh->elf.root.u.def.value,
5782 &sec, NULL, FALSE) != (bfd_vma) -1)
5783 sec->flags |= SEC_KEEP;
5785 sec = eh->elf.root.u.def.section;
5786 sec->flags |= SEC_KEEP;
5790 /* Mark sections containing dynamically referenced symbols. When
5791 building shared libraries, we must assume that any visible symbol is
5795 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5797 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5798 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5799 struct ppc_link_hash_entry *fdh;
5801 /* Dynamic linking info is on the func descriptor sym. */
5802 fdh = defined_func_desc (eh);
5806 if ((eh->elf.root.type == bfd_link_hash_defined
5807 || eh->elf.root.type == bfd_link_hash_defweak)
5808 && (eh->elf.ref_dynamic
5809 || (!info->executable
5810 && eh->elf.def_regular
5811 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5812 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
5813 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
5814 || !bfd_hide_sym_by_version (info->version_info,
5815 eh->elf.root.root.string)))))
5818 struct ppc_link_hash_entry *fh;
5820 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5822 /* Function descriptor syms cause the associated
5823 function code sym section to be marked. */
5824 fh = defined_code_entry (eh);
5827 code_sec = fh->elf.root.u.def.section;
5828 code_sec->flags |= SEC_KEEP;
5830 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5831 && opd_entry_value (eh->elf.root.u.def.section,
5832 eh->elf.root.u.def.value,
5833 &code_sec, NULL, FALSE) != (bfd_vma) -1)
5834 code_sec->flags |= SEC_KEEP;
5840 /* Return the section that should be marked against GC for a given
5844 ppc64_elf_gc_mark_hook (asection *sec,
5845 struct bfd_link_info *info,
5846 Elf_Internal_Rela *rel,
5847 struct elf_link_hash_entry *h,
5848 Elf_Internal_Sym *sym)
5852 /* Syms return NULL if we're marking .opd, so we avoid marking all
5853 function sections, as all functions are referenced in .opd. */
5855 if (get_opd_info (sec) != NULL)
5860 enum elf_ppc64_reloc_type r_type;
5861 struct ppc_link_hash_entry *eh, *fh, *fdh;
5863 r_type = ELF64_R_TYPE (rel->r_info);
5866 case R_PPC64_GNU_VTINHERIT:
5867 case R_PPC64_GNU_VTENTRY:
5871 switch (h->root.type)
5873 case bfd_link_hash_defined:
5874 case bfd_link_hash_defweak:
5875 eh = (struct ppc_link_hash_entry *) h;
5876 fdh = defined_func_desc (eh);
5880 /* Function descriptor syms cause the associated
5881 function code sym section to be marked. */
5882 fh = defined_code_entry (eh);
5885 /* They also mark their opd section. */
5886 eh->elf.root.u.def.section->gc_mark = 1;
5888 rsec = fh->elf.root.u.def.section;
5890 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5891 && opd_entry_value (eh->elf.root.u.def.section,
5892 eh->elf.root.u.def.value,
5893 &rsec, NULL, FALSE) != (bfd_vma) -1)
5894 eh->elf.root.u.def.section->gc_mark = 1;
5896 rsec = h->root.u.def.section;
5899 case bfd_link_hash_common:
5900 rsec = h->root.u.c.p->section;
5904 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5910 struct _opd_sec_data *opd;
5912 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5913 opd = get_opd_info (rsec);
5914 if (opd != NULL && opd->func_sec != NULL)
5918 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5925 /* Update the .got, .plt. and dynamic reloc reference counts for the
5926 section being removed. */
5929 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5930 asection *sec, const Elf_Internal_Rela *relocs)
5932 struct ppc_link_hash_table *htab;
5933 Elf_Internal_Shdr *symtab_hdr;
5934 struct elf_link_hash_entry **sym_hashes;
5935 struct got_entry **local_got_ents;
5936 const Elf_Internal_Rela *rel, *relend;
5938 if (info->relocatable)
5941 if ((sec->flags & SEC_ALLOC) == 0)
5944 elf_section_data (sec)->local_dynrel = NULL;
5946 htab = ppc_hash_table (info);
5950 symtab_hdr = &elf_symtab_hdr (abfd);
5951 sym_hashes = elf_sym_hashes (abfd);
5952 local_got_ents = elf_local_got_ents (abfd);
5954 relend = relocs + sec->reloc_count;
5955 for (rel = relocs; rel < relend; rel++)
5957 unsigned long r_symndx;
5958 enum elf_ppc64_reloc_type r_type;
5959 struct elf_link_hash_entry *h = NULL;
5960 unsigned char tls_type = 0;
5962 r_symndx = ELF64_R_SYM (rel->r_info);
5963 r_type = ELF64_R_TYPE (rel->r_info);
5964 if (r_symndx >= symtab_hdr->sh_info)
5966 struct ppc_link_hash_entry *eh;
5967 struct elf_dyn_relocs **pp;
5968 struct elf_dyn_relocs *p;
5970 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5971 h = elf_follow_link (h);
5972 eh = (struct ppc_link_hash_entry *) h;
5974 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5977 /* Everything must go for SEC. */
5983 if (is_branch_reloc (r_type))
5985 struct plt_entry **ifunc = NULL;
5988 if (h->type == STT_GNU_IFUNC)
5989 ifunc = &h->plt.plist;
5991 else if (local_got_ents != NULL)
5993 struct plt_entry **local_plt = (struct plt_entry **)
5994 (local_got_ents + symtab_hdr->sh_info);
5995 unsigned char *local_got_tls_masks = (unsigned char *)
5996 (local_plt + symtab_hdr->sh_info);
5997 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5998 ifunc = local_plt + r_symndx;
6002 struct plt_entry *ent;
6004 for (ent = *ifunc; ent != NULL; ent = ent->next)
6005 if (ent->addend == rel->r_addend)
6009 if (ent->plt.refcount > 0)
6010 ent->plt.refcount -= 1;
6017 case R_PPC64_GOT_TLSLD16:
6018 case R_PPC64_GOT_TLSLD16_LO:
6019 case R_PPC64_GOT_TLSLD16_HI:
6020 case R_PPC64_GOT_TLSLD16_HA:
6021 tls_type = TLS_TLS | TLS_LD;
6024 case R_PPC64_GOT_TLSGD16:
6025 case R_PPC64_GOT_TLSGD16_LO:
6026 case R_PPC64_GOT_TLSGD16_HI:
6027 case R_PPC64_GOT_TLSGD16_HA:
6028 tls_type = TLS_TLS | TLS_GD;
6031 case R_PPC64_GOT_TPREL16_DS:
6032 case R_PPC64_GOT_TPREL16_LO_DS:
6033 case R_PPC64_GOT_TPREL16_HI:
6034 case R_PPC64_GOT_TPREL16_HA:
6035 tls_type = TLS_TLS | TLS_TPREL;
6038 case R_PPC64_GOT_DTPREL16_DS:
6039 case R_PPC64_GOT_DTPREL16_LO_DS:
6040 case R_PPC64_GOT_DTPREL16_HI:
6041 case R_PPC64_GOT_DTPREL16_HA:
6042 tls_type = TLS_TLS | TLS_DTPREL;
6046 case R_PPC64_GOT16_DS:
6047 case R_PPC64_GOT16_HA:
6048 case R_PPC64_GOT16_HI:
6049 case R_PPC64_GOT16_LO:
6050 case R_PPC64_GOT16_LO_DS:
6053 struct got_entry *ent;
6058 ent = local_got_ents[r_symndx];
6060 for (; ent != NULL; ent = ent->next)
6061 if (ent->addend == rel->r_addend
6062 && ent->owner == abfd
6063 && ent->tls_type == tls_type)
6067 if (ent->got.refcount > 0)
6068 ent->got.refcount -= 1;
6072 case R_PPC64_PLT16_HA:
6073 case R_PPC64_PLT16_HI:
6074 case R_PPC64_PLT16_LO:
6078 case R_PPC64_REL14_BRNTAKEN:
6079 case R_PPC64_REL14_BRTAKEN:
6083 struct plt_entry *ent;
6085 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6086 if (ent->addend == rel->r_addend)
6088 if (ent != NULL && ent->plt.refcount > 0)
6089 ent->plt.refcount -= 1;
6100 /* The maximum size of .sfpr. */
6101 #define SFPR_MAX (218*4)
6103 struct sfpr_def_parms
6105 const char name[12];
6106 unsigned char lo, hi;
6107 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6108 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6111 /* Auto-generate _save*, _rest* functions in .sfpr. */
6114 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6116 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6118 size_t len = strlen (parm->name);
6119 bfd_boolean writing = FALSE;
6125 memcpy (sym, parm->name, len);
6128 for (i = parm->lo; i <= parm->hi; i++)
6130 struct elf_link_hash_entry *h;
6132 sym[len + 0] = i / 10 + '0';
6133 sym[len + 1] = i % 10 + '0';
6134 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6138 h->root.type = bfd_link_hash_defined;
6139 h->root.u.def.section = htab->sfpr;
6140 h->root.u.def.value = htab->sfpr->size;
6143 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6145 if (htab->sfpr->contents == NULL)
6147 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6148 if (htab->sfpr->contents == NULL)
6154 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6156 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6158 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6159 htab->sfpr->size = p - htab->sfpr->contents;
6167 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6169 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6174 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6176 p = savegpr0 (abfd, p, r);
6177 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6179 bfd_put_32 (abfd, BLR, p);
6184 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6186 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6191 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6193 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6195 p = restgpr0 (abfd, p, r);
6196 bfd_put_32 (abfd, MTLR_R0, p);
6200 p = restgpr0 (abfd, p, 30);
6201 p = restgpr0 (abfd, p, 31);
6203 bfd_put_32 (abfd, BLR, p);
6208 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6210 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6215 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6217 p = savegpr1 (abfd, p, r);
6218 bfd_put_32 (abfd, BLR, p);
6223 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6225 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6230 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6232 p = restgpr1 (abfd, p, r);
6233 bfd_put_32 (abfd, BLR, p);
6238 savefpr (bfd *abfd, bfd_byte *p, int r)
6240 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6245 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6247 p = savefpr (abfd, p, r);
6248 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6250 bfd_put_32 (abfd, BLR, p);
6255 restfpr (bfd *abfd, bfd_byte *p, int r)
6257 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6262 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6264 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6266 p = restfpr (abfd, p, r);
6267 bfd_put_32 (abfd, MTLR_R0, p);
6271 p = restfpr (abfd, p, 30);
6272 p = restfpr (abfd, p, 31);
6274 bfd_put_32 (abfd, BLR, p);
6279 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6281 p = savefpr (abfd, p, r);
6282 bfd_put_32 (abfd, BLR, p);
6287 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6289 p = restfpr (abfd, p, r);
6290 bfd_put_32 (abfd, BLR, p);
6295 savevr (bfd *abfd, bfd_byte *p, int r)
6297 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6299 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6304 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6306 p = savevr (abfd, p, r);
6307 bfd_put_32 (abfd, BLR, p);
6312 restvr (bfd *abfd, bfd_byte *p, int r)
6314 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6316 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6321 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6323 p = restvr (abfd, p, r);
6324 bfd_put_32 (abfd, BLR, p);
6328 /* Called via elf_link_hash_traverse to transfer dynamic linking
6329 information on function code symbol entries to their corresponding
6330 function descriptor symbol entries. */
6333 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6335 struct bfd_link_info *info;
6336 struct ppc_link_hash_table *htab;
6337 struct plt_entry *ent;
6338 struct ppc_link_hash_entry *fh;
6339 struct ppc_link_hash_entry *fdh;
6340 bfd_boolean force_local;
6342 fh = (struct ppc_link_hash_entry *) h;
6343 if (fh->elf.root.type == bfd_link_hash_indirect)
6347 htab = ppc_hash_table (info);
6351 /* Resolve undefined references to dot-symbols as the value
6352 in the function descriptor, if we have one in a regular object.
6353 This is to satisfy cases like ".quad .foo". Calls to functions
6354 in dynamic objects are handled elsewhere. */
6355 if (fh->elf.root.type == bfd_link_hash_undefweak
6356 && fh->was_undefined
6357 && (fdh = defined_func_desc (fh)) != NULL
6358 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6359 && opd_entry_value (fdh->elf.root.u.def.section,
6360 fdh->elf.root.u.def.value,
6361 &fh->elf.root.u.def.section,
6362 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6364 fh->elf.root.type = fdh->elf.root.type;
6365 fh->elf.forced_local = 1;
6366 fh->elf.def_regular = fdh->elf.def_regular;
6367 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6370 /* If this is a function code symbol, transfer dynamic linking
6371 information to the function descriptor symbol. */
6375 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6376 if (ent->plt.refcount > 0)
6379 || fh->elf.root.root.string[0] != '.'
6380 || fh->elf.root.root.string[1] == '\0')
6383 /* Find the corresponding function descriptor symbol. Create it
6384 as undefined if necessary. */
6386 fdh = lookup_fdh (fh, htab);
6388 && !info->executable
6389 && (fh->elf.root.type == bfd_link_hash_undefined
6390 || fh->elf.root.type == bfd_link_hash_undefweak))
6392 fdh = make_fdh (info, fh);
6397 /* Fake function descriptors are made undefweak. If the function
6398 code symbol is strong undefined, make the fake sym the same.
6399 If the function code symbol is defined, then force the fake
6400 descriptor local; We can't support overriding of symbols in a
6401 shared library on a fake descriptor. */
6405 && fdh->elf.root.type == bfd_link_hash_undefweak)
6407 if (fh->elf.root.type == bfd_link_hash_undefined)
6409 fdh->elf.root.type = bfd_link_hash_undefined;
6410 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6412 else if (fh->elf.root.type == bfd_link_hash_defined
6413 || fh->elf.root.type == bfd_link_hash_defweak)
6415 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6420 && !fdh->elf.forced_local
6421 && (!info->executable
6422 || fdh->elf.def_dynamic
6423 || fdh->elf.ref_dynamic
6424 || (fdh->elf.root.type == bfd_link_hash_undefweak
6425 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6427 if (fdh->elf.dynindx == -1)
6428 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6430 fdh->elf.ref_regular |= fh->elf.ref_regular;
6431 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6432 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6433 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6434 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6436 move_plt_plist (fh, fdh);
6437 fdh->elf.needs_plt = 1;
6439 fdh->is_func_descriptor = 1;
6444 /* Now that the info is on the function descriptor, clear the
6445 function code sym info. Any function code syms for which we
6446 don't have a definition in a regular file, we force local.
6447 This prevents a shared library from exporting syms that have
6448 been imported from another library. Function code syms that
6449 are really in the library we must leave global to prevent the
6450 linker dragging in a definition from a static library. */
6451 force_local = (!fh->elf.def_regular
6453 || !fdh->elf.def_regular
6454 || fdh->elf.forced_local);
6455 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6460 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6461 this hook to a) provide some gcc support functions, and b) transfer
6462 dynamic linking information gathered so far on function code symbol
6463 entries, to their corresponding function descriptor symbol entries. */
6466 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6467 struct bfd_link_info *info)
6469 struct ppc_link_hash_table *htab;
6471 const struct sfpr_def_parms funcs[] =
6473 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6474 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6475 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6476 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6477 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6478 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6479 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6480 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6481 { "._savef", 14, 31, savefpr, savefpr1_tail },
6482 { "._restf", 14, 31, restfpr, restfpr1_tail },
6483 { "_savevr_", 20, 31, savevr, savevr_tail },
6484 { "_restvr_", 20, 31, restvr, restvr_tail }
6487 htab = ppc_hash_table (info);
6491 if (htab->sfpr == NULL)
6492 /* We don't have any relocs. */
6495 /* Provide any missing _save* and _rest* functions. */
6496 htab->sfpr->size = 0;
6497 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6498 if (!sfpr_define (info, &funcs[i]))
6501 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6503 if (htab->sfpr->size == 0)
6504 htab->sfpr->flags |= SEC_EXCLUDE;
6509 /* Adjust a symbol defined by a dynamic object and referenced by a
6510 regular object. The current definition is in some section of the
6511 dynamic object, but we're not including those sections. We have to
6512 change the definition to something the rest of the link can
6516 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6517 struct elf_link_hash_entry *h)
6519 struct ppc_link_hash_table *htab;
6522 htab = ppc_hash_table (info);
6526 /* Deal with function syms. */
6527 if (h->type == STT_FUNC
6528 || h->type == STT_GNU_IFUNC
6531 /* Clear procedure linkage table information for any symbol that
6532 won't need a .plt entry. */
6533 struct plt_entry *ent;
6534 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6535 if (ent->plt.refcount > 0)
6538 || (h->type != STT_GNU_IFUNC
6539 && (SYMBOL_CALLS_LOCAL (info, h)
6540 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6541 && h->root.type == bfd_link_hash_undefweak))))
6543 h->plt.plist = NULL;
6548 h->plt.plist = NULL;
6550 /* If this is a weak symbol, and there is a real definition, the
6551 processor independent code will have arranged for us to see the
6552 real definition first, and we can just use the same value. */
6553 if (h->u.weakdef != NULL)
6555 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6556 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6557 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6558 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6559 if (ELIMINATE_COPY_RELOCS)
6560 h->non_got_ref = h->u.weakdef->non_got_ref;
6564 /* If we are creating a shared library, we must presume that the
6565 only references to the symbol are via the global offset table.
6566 For such cases we need not do anything here; the relocations will
6567 be handled correctly by relocate_section. */
6571 /* If there are no references to this symbol that do not use the
6572 GOT, we don't need to generate a copy reloc. */
6573 if (!h->non_got_ref)
6576 /* Don't generate a copy reloc for symbols defined in the executable. */
6577 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6580 if (ELIMINATE_COPY_RELOCS)
6582 struct ppc_link_hash_entry * eh;
6583 struct elf_dyn_relocs *p;
6585 eh = (struct ppc_link_hash_entry *) h;
6586 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6588 s = p->sec->output_section;
6589 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6593 /* If we didn't find any dynamic relocs in read-only sections, then
6594 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6602 if (h->plt.plist != NULL)
6604 /* We should never get here, but unfortunately there are versions
6605 of gcc out there that improperly (for this ABI) put initialized
6606 function pointers, vtable refs and suchlike in read-only
6607 sections. Allow them to proceed, but warn that this might
6608 break at runtime. */
6609 info->callbacks->einfo
6610 (_("%P: copy reloc against `%s' requires lazy plt linking; "
6611 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6612 h->root.root.string);
6615 /* This is a reference to a symbol defined by a dynamic object which
6616 is not a function. */
6618 /* We must allocate the symbol in our .dynbss section, which will
6619 become part of the .bss section of the executable. There will be
6620 an entry for this symbol in the .dynsym section. The dynamic
6621 object will contain position independent code, so all references
6622 from the dynamic object to this symbol will go through the global
6623 offset table. The dynamic linker will use the .dynsym entry to
6624 determine the address it must put in the global offset table, so
6625 both the dynamic object and the regular object will refer to the
6626 same memory location for the variable. */
6628 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6629 to copy the initial value out of the dynamic object and into the
6630 runtime process image. We need to remember the offset into the
6631 .rela.bss section we are going to use. */
6632 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6634 htab->relbss->size += sizeof (Elf64_External_Rela);
6640 return _bfd_elf_adjust_dynamic_copy (h, s);
6643 /* If given a function descriptor symbol, hide both the function code
6644 sym and the descriptor. */
6646 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6647 struct elf_link_hash_entry *h,
6648 bfd_boolean force_local)
6650 struct ppc_link_hash_entry *eh;
6651 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6653 eh = (struct ppc_link_hash_entry *) h;
6654 if (eh->is_func_descriptor)
6656 struct ppc_link_hash_entry *fh = eh->oh;
6661 struct ppc_link_hash_table *htab;
6664 /* We aren't supposed to use alloca in BFD because on
6665 systems which do not have alloca the version in libiberty
6666 calls xmalloc, which might cause the program to crash
6667 when it runs out of memory. This function doesn't have a
6668 return status, so there's no way to gracefully return an
6669 error. So cheat. We know that string[-1] can be safely
6670 accessed; It's either a string in an ELF string table,
6671 or allocated in an objalloc structure. */
6673 p = eh->elf.root.root.string - 1;
6676 htab = ppc_hash_table (info);
6680 fh = (struct ppc_link_hash_entry *)
6681 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6684 /* Unfortunately, if it so happens that the string we were
6685 looking for was allocated immediately before this string,
6686 then we overwrote the string terminator. That's the only
6687 reason the lookup should fail. */
6690 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6691 while (q >= eh->elf.root.root.string && *q == *p)
6693 if (q < eh->elf.root.root.string && *p == '.')
6694 fh = (struct ppc_link_hash_entry *)
6695 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6704 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6709 get_sym_h (struct elf_link_hash_entry **hp,
6710 Elf_Internal_Sym **symp,
6712 unsigned char **tls_maskp,
6713 Elf_Internal_Sym **locsymsp,
6714 unsigned long r_symndx,
6717 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6719 if (r_symndx >= symtab_hdr->sh_info)
6721 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6722 struct elf_link_hash_entry *h;
6724 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6725 h = elf_follow_link (h);
6733 if (symsecp != NULL)
6735 asection *symsec = NULL;
6736 if (h->root.type == bfd_link_hash_defined
6737 || h->root.type == bfd_link_hash_defweak)
6738 symsec = h->root.u.def.section;
6742 if (tls_maskp != NULL)
6744 struct ppc_link_hash_entry *eh;
6746 eh = (struct ppc_link_hash_entry *) h;
6747 *tls_maskp = &eh->tls_mask;
6752 Elf_Internal_Sym *sym;
6753 Elf_Internal_Sym *locsyms = *locsymsp;
6755 if (locsyms == NULL)
6757 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6758 if (locsyms == NULL)
6759 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6760 symtab_hdr->sh_info,
6761 0, NULL, NULL, NULL);
6762 if (locsyms == NULL)
6764 *locsymsp = locsyms;
6766 sym = locsyms + r_symndx;
6774 if (symsecp != NULL)
6775 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6777 if (tls_maskp != NULL)
6779 struct got_entry **lgot_ents;
6780 unsigned char *tls_mask;
6783 lgot_ents = elf_local_got_ents (ibfd);
6784 if (lgot_ents != NULL)
6786 struct plt_entry **local_plt = (struct plt_entry **)
6787 (lgot_ents + symtab_hdr->sh_info);
6788 unsigned char *lgot_masks = (unsigned char *)
6789 (local_plt + symtab_hdr->sh_info);
6790 tls_mask = &lgot_masks[r_symndx];
6792 *tls_maskp = tls_mask;
6798 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6799 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6800 type suitable for optimization, and 1 otherwise. */
6803 get_tls_mask (unsigned char **tls_maskp,
6804 unsigned long *toc_symndx,
6805 bfd_vma *toc_addend,
6806 Elf_Internal_Sym **locsymsp,
6807 const Elf_Internal_Rela *rel,
6810 unsigned long r_symndx;
6812 struct elf_link_hash_entry *h;
6813 Elf_Internal_Sym *sym;
6817 r_symndx = ELF64_R_SYM (rel->r_info);
6818 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6821 if ((*tls_maskp != NULL && **tls_maskp != 0)
6823 || ppc64_elf_section_data (sec) == NULL
6824 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6827 /* Look inside a TOC section too. */
6830 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6831 off = h->root.u.def.value;
6834 off = sym->st_value;
6835 off += rel->r_addend;
6836 BFD_ASSERT (off % 8 == 0);
6837 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6838 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6839 if (toc_symndx != NULL)
6840 *toc_symndx = r_symndx;
6841 if (toc_addend != NULL)
6842 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6843 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6845 if ((h == NULL || is_static_defined (h))
6846 && (next_r == -1 || next_r == -2))
6851 /* Find (or create) an entry in the tocsave hash table. */
6853 static struct tocsave_entry *
6854 tocsave_find (struct ppc_link_hash_table *htab,
6855 enum insert_option insert,
6856 Elf_Internal_Sym **local_syms,
6857 const Elf_Internal_Rela *irela,
6860 unsigned long r_indx;
6861 struct elf_link_hash_entry *h;
6862 Elf_Internal_Sym *sym;
6863 struct tocsave_entry ent, *p;
6865 struct tocsave_entry **slot;
6867 r_indx = ELF64_R_SYM (irela->r_info);
6868 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
6870 if (ent.sec == NULL || ent.sec->output_section == NULL)
6872 (*_bfd_error_handler)
6873 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6878 ent.offset = h->root.u.def.value;
6880 ent.offset = sym->st_value;
6881 ent.offset += irela->r_addend;
6883 hash = tocsave_htab_hash (&ent);
6884 slot = ((struct tocsave_entry **)
6885 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
6891 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
6900 /* Adjust all global syms defined in opd sections. In gcc generated
6901 code for the old ABI, these will already have been done. */
6904 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6906 struct ppc_link_hash_entry *eh;
6908 struct _opd_sec_data *opd;
6910 if (h->root.type == bfd_link_hash_indirect)
6913 if (h->root.type != bfd_link_hash_defined
6914 && h->root.type != bfd_link_hash_defweak)
6917 eh = (struct ppc_link_hash_entry *) h;
6918 if (eh->adjust_done)
6921 sym_sec = eh->elf.root.u.def.section;
6922 opd = get_opd_info (sym_sec);
6923 if (opd != NULL && opd->adjust != NULL)
6925 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6928 /* This entry has been deleted. */
6929 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6932 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6933 if (discarded_section (dsec))
6935 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6939 eh->elf.root.u.def.value = 0;
6940 eh->elf.root.u.def.section = dsec;
6943 eh->elf.root.u.def.value += adjust;
6944 eh->adjust_done = 1;
6949 /* Handles decrementing dynamic reloc counts for the reloc specified by
6950 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6951 have already been determined. */
6954 dec_dynrel_count (bfd_vma r_info,
6956 struct bfd_link_info *info,
6957 Elf_Internal_Sym **local_syms,
6958 struct elf_link_hash_entry *h,
6961 enum elf_ppc64_reloc_type r_type;
6962 struct elf_dyn_relocs *p;
6963 struct elf_dyn_relocs **pp;
6965 /* Can this reloc be dynamic? This switch, and later tests here
6966 should be kept in sync with the code in check_relocs. */
6967 r_type = ELF64_R_TYPE (r_info);
6973 case R_PPC64_TPREL16:
6974 case R_PPC64_TPREL16_LO:
6975 case R_PPC64_TPREL16_HI:
6976 case R_PPC64_TPREL16_HA:
6977 case R_PPC64_TPREL16_DS:
6978 case R_PPC64_TPREL16_LO_DS:
6979 case R_PPC64_TPREL16_HIGHER:
6980 case R_PPC64_TPREL16_HIGHERA:
6981 case R_PPC64_TPREL16_HIGHEST:
6982 case R_PPC64_TPREL16_HIGHESTA:
6986 case R_PPC64_TPREL64:
6987 case R_PPC64_DTPMOD64:
6988 case R_PPC64_DTPREL64:
6989 case R_PPC64_ADDR64:
6993 case R_PPC64_ADDR14:
6994 case R_PPC64_ADDR14_BRNTAKEN:
6995 case R_PPC64_ADDR14_BRTAKEN:
6996 case R_PPC64_ADDR16:
6997 case R_PPC64_ADDR16_DS:
6998 case R_PPC64_ADDR16_HA:
6999 case R_PPC64_ADDR16_HI:
7000 case R_PPC64_ADDR16_HIGHER:
7001 case R_PPC64_ADDR16_HIGHERA:
7002 case R_PPC64_ADDR16_HIGHEST:
7003 case R_PPC64_ADDR16_HIGHESTA:
7004 case R_PPC64_ADDR16_LO:
7005 case R_PPC64_ADDR16_LO_DS:
7006 case R_PPC64_ADDR24:
7007 case R_PPC64_ADDR32:
7008 case R_PPC64_UADDR16:
7009 case R_PPC64_UADDR32:
7010 case R_PPC64_UADDR64:
7015 if (local_syms != NULL)
7017 unsigned long r_symndx;
7018 Elf_Internal_Sym *sym;
7019 bfd *ibfd = sec->owner;
7021 r_symndx = ELF64_R_SYM (r_info);
7022 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7027 && (must_be_dyn_reloc (info, r_type)
7030 || h->root.type == bfd_link_hash_defweak
7031 || !h->def_regular))))
7032 || (ELIMINATE_COPY_RELOCS
7035 && (h->root.type == bfd_link_hash_defweak
7036 || !h->def_regular)))
7042 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7045 if (sym_sec != NULL)
7047 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
7048 pp = (struct elf_dyn_relocs **) vpp;
7052 void *vpp = &elf_section_data (sec)->local_dynrel;
7053 pp = (struct elf_dyn_relocs **) vpp;
7056 /* elf_gc_sweep may have already removed all dyn relocs associated
7057 with local syms for a given section. Don't report a dynreloc
7063 while ((p = *pp) != NULL)
7067 if (!must_be_dyn_reloc (info, r_type))
7077 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7079 bfd_set_error (bfd_error_bad_value);
7083 /* Remove unused Official Procedure Descriptor entries. Currently we
7084 only remove those associated with functions in discarded link-once
7085 sections, or weakly defined functions that have been overridden. It
7086 would be possible to remove many more entries for statically linked
7090 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7093 bfd_boolean some_edited = FALSE;
7094 asection *need_pad = NULL;
7096 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7099 Elf_Internal_Rela *relstart, *rel, *relend;
7100 Elf_Internal_Shdr *symtab_hdr;
7101 Elf_Internal_Sym *local_syms;
7103 struct _opd_sec_data *opd;
7104 bfd_boolean need_edit, add_aux_fields;
7105 bfd_size_type cnt_16b = 0;
7107 if (!is_ppc64_elf (ibfd))
7110 sec = bfd_get_section_by_name (ibfd, ".opd");
7111 if (sec == NULL || sec->size == 0)
7114 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7117 if (sec->output_section == bfd_abs_section_ptr)
7120 /* Look through the section relocs. */
7121 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7125 symtab_hdr = &elf_symtab_hdr (ibfd);
7127 /* Read the relocations. */
7128 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7130 if (relstart == NULL)
7133 /* First run through the relocs to check they are sane, and to
7134 determine whether we need to edit this opd section. */
7138 relend = relstart + sec->reloc_count;
7139 for (rel = relstart; rel < relend; )
7141 enum elf_ppc64_reloc_type r_type;
7142 unsigned long r_symndx;
7144 struct elf_link_hash_entry *h;
7145 Elf_Internal_Sym *sym;
7147 /* .opd contains a regular array of 16 or 24 byte entries. We're
7148 only interested in the reloc pointing to a function entry
7150 if (rel->r_offset != offset
7151 || rel + 1 >= relend
7152 || (rel + 1)->r_offset != offset + 8)
7154 /* If someone messes with .opd alignment then after a
7155 "ld -r" we might have padding in the middle of .opd.
7156 Also, there's nothing to prevent someone putting
7157 something silly in .opd with the assembler. No .opd
7158 optimization for them! */
7160 (*_bfd_error_handler)
7161 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7166 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7167 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7169 (*_bfd_error_handler)
7170 (_("%B: unexpected reloc type %u in .opd section"),
7176 r_symndx = ELF64_R_SYM (rel->r_info);
7177 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7181 if (sym_sec == NULL || sym_sec->owner == NULL)
7183 const char *sym_name;
7185 sym_name = h->root.root.string;
7187 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7190 (*_bfd_error_handler)
7191 (_("%B: undefined sym `%s' in .opd section"),
7197 /* opd entries are always for functions defined in the
7198 current input bfd. If the symbol isn't defined in the
7199 input bfd, then we won't be using the function in this
7200 bfd; It must be defined in a linkonce section in another
7201 bfd, or is weak. It's also possible that we are
7202 discarding the function due to a linker script /DISCARD/,
7203 which we test for via the output_section. */
7204 if (sym_sec->owner != ibfd
7205 || sym_sec->output_section == bfd_abs_section_ptr)
7210 || (rel + 1 == relend && rel->r_offset == offset + 16))
7212 if (sec->size == offset + 24)
7217 if (rel == relend && sec->size == offset + 16)
7225 if (rel->r_offset == offset + 24)
7227 else if (rel->r_offset != offset + 16)
7229 else if (rel + 1 < relend
7230 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7231 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7236 else if (rel + 2 < relend
7237 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7238 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7247 add_aux_fields = non_overlapping && cnt_16b > 0;
7249 if (need_edit || add_aux_fields)
7251 Elf_Internal_Rela *write_rel;
7252 Elf_Internal_Shdr *rel_hdr;
7253 bfd_byte *rptr, *wptr;
7254 bfd_byte *new_contents;
7259 new_contents = NULL;
7260 amt = sec->size * sizeof (long) / 8;
7261 opd = &ppc64_elf_section_data (sec)->u.opd;
7262 opd->adjust = bfd_zalloc (sec->owner, amt);
7263 if (opd->adjust == NULL)
7265 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7267 /* This seems a waste of time as input .opd sections are all
7268 zeros as generated by gcc, but I suppose there's no reason
7269 this will always be so. We might start putting something in
7270 the third word of .opd entries. */
7271 if ((sec->flags & SEC_IN_MEMORY) == 0)
7274 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7279 if (local_syms != NULL
7280 && symtab_hdr->contents != (unsigned char *) local_syms)
7282 if (elf_section_data (sec)->relocs != relstart)
7286 sec->contents = loc;
7287 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7290 elf_section_data (sec)->relocs = relstart;
7292 new_contents = sec->contents;
7295 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7296 if (new_contents == NULL)
7300 wptr = new_contents;
7301 rptr = sec->contents;
7303 write_rel = relstart;
7307 for (rel = relstart; rel < relend; rel++)
7309 unsigned long r_symndx;
7311 struct elf_link_hash_entry *h;
7312 Elf_Internal_Sym *sym;
7314 r_symndx = ELF64_R_SYM (rel->r_info);
7315 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7319 if (rel->r_offset == offset)
7321 struct ppc_link_hash_entry *fdh = NULL;
7323 /* See if the .opd entry is full 24 byte or
7324 16 byte (with fd_aux entry overlapped with next
7327 if ((rel + 2 == relend && sec->size == offset + 16)
7328 || (rel + 3 < relend
7329 && rel[2].r_offset == offset + 16
7330 && rel[3].r_offset == offset + 24
7331 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7332 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7336 && h->root.root.string[0] == '.')
7338 struct ppc_link_hash_table *htab;
7340 htab = ppc_hash_table (info);
7342 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7345 && fdh->elf.root.type != bfd_link_hash_defined
7346 && fdh->elf.root.type != bfd_link_hash_defweak)
7350 skip = (sym_sec->owner != ibfd
7351 || sym_sec->output_section == bfd_abs_section_ptr);
7354 if (fdh != NULL && sym_sec->owner == ibfd)
7356 /* Arrange for the function descriptor sym
7358 fdh->elf.root.u.def.value = 0;
7359 fdh->elf.root.u.def.section = sym_sec;
7361 opd->adjust[rel->r_offset / 8] = -1;
7365 /* We'll be keeping this opd entry. */
7369 /* Redefine the function descriptor symbol to
7370 this location in the opd section. It is
7371 necessary to update the value here rather
7372 than using an array of adjustments as we do
7373 for local symbols, because various places
7374 in the generic ELF code use the value
7375 stored in u.def.value. */
7376 fdh->elf.root.u.def.value = wptr - new_contents;
7377 fdh->adjust_done = 1;
7380 /* Local syms are a bit tricky. We could
7381 tweak them as they can be cached, but
7382 we'd need to look through the local syms
7383 for the function descriptor sym which we
7384 don't have at the moment. So keep an
7385 array of adjustments. */
7386 opd->adjust[rel->r_offset / 8]
7387 = (wptr - new_contents) - (rptr - sec->contents);
7390 memcpy (wptr, rptr, opd_ent_size);
7391 wptr += opd_ent_size;
7392 if (add_aux_fields && opd_ent_size == 16)
7394 memset (wptr, '\0', 8);
7398 rptr += opd_ent_size;
7399 offset += opd_ent_size;
7405 && !info->relocatable
7406 && !dec_dynrel_count (rel->r_info, sec, info,
7412 /* We need to adjust any reloc offsets to point to the
7413 new opd entries. While we're at it, we may as well
7414 remove redundant relocs. */
7415 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7416 if (write_rel != rel)
7417 memcpy (write_rel, rel, sizeof (*rel));
7422 sec->size = wptr - new_contents;
7423 sec->reloc_count = write_rel - relstart;
7426 free (sec->contents);
7427 sec->contents = new_contents;
7430 /* Fudge the header size too, as this is used later in
7431 elf_bfd_final_link if we are emitting relocs. */
7432 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7433 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7436 else if (elf_section_data (sec)->relocs != relstart)
7439 if (local_syms != NULL
7440 && symtab_hdr->contents != (unsigned char *) local_syms)
7442 if (!info->keep_memory)
7445 symtab_hdr->contents = (unsigned char *) local_syms;
7450 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7452 /* If we are doing a final link and the last .opd entry is just 16 byte
7453 long, add a 8 byte padding after it. */
7454 if (need_pad != NULL && !info->relocatable)
7458 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7460 BFD_ASSERT (need_pad->size > 0);
7462 p = bfd_malloc (need_pad->size + 8);
7466 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7467 p, 0, need_pad->size))
7470 need_pad->contents = p;
7471 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7475 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7479 need_pad->contents = p;
7482 memset (need_pad->contents + need_pad->size, 0, 8);
7483 need_pad->size += 8;
7489 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7492 ppc64_elf_tls_setup (struct bfd_link_info *info,
7493 int no_tls_get_addr_opt,
7496 struct ppc_link_hash_table *htab;
7498 htab = ppc_hash_table (info);
7503 htab->do_multi_toc = 0;
7504 else if (!htab->do_multi_toc)
7507 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7508 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7509 FALSE, FALSE, TRUE));
7510 /* Move dynamic linking info to the function descriptor sym. */
7511 if (htab->tls_get_addr != NULL)
7512 func_desc_adjust (&htab->tls_get_addr->elf, info);
7513 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7514 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7515 FALSE, FALSE, TRUE));
7516 if (!no_tls_get_addr_opt)
7518 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7520 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7521 FALSE, FALSE, TRUE);
7523 func_desc_adjust (opt, info);
7524 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7525 FALSE, FALSE, TRUE);
7527 && (opt_fd->root.type == bfd_link_hash_defined
7528 || opt_fd->root.type == bfd_link_hash_defweak))
7530 /* If glibc supports an optimized __tls_get_addr call stub,
7531 signalled by the presence of __tls_get_addr_opt, and we'll
7532 be calling __tls_get_addr via a plt call stub, then
7533 make __tls_get_addr point to __tls_get_addr_opt. */
7534 tga_fd = &htab->tls_get_addr_fd->elf;
7535 if (htab->elf.dynamic_sections_created
7537 && (tga_fd->type == STT_FUNC
7538 || tga_fd->needs_plt)
7539 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7540 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7541 && tga_fd->root.type == bfd_link_hash_undefweak)))
7543 struct plt_entry *ent;
7545 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7546 if (ent->plt.refcount > 0)
7550 tga_fd->root.type = bfd_link_hash_indirect;
7551 tga_fd->root.u.i.link = &opt_fd->root;
7552 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7553 if (opt_fd->dynindx != -1)
7555 /* Use __tls_get_addr_opt in dynamic relocations. */
7556 opt_fd->dynindx = -1;
7557 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7558 opt_fd->dynstr_index);
7559 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7562 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7563 tga = &htab->tls_get_addr->elf;
7564 if (opt != NULL && tga != NULL)
7566 tga->root.type = bfd_link_hash_indirect;
7567 tga->root.u.i.link = &opt->root;
7568 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7569 _bfd_elf_link_hash_hide_symbol (info, opt,
7571 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7573 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7574 htab->tls_get_addr_fd->is_func_descriptor = 1;
7575 if (htab->tls_get_addr != NULL)
7577 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7578 htab->tls_get_addr->is_func = 1;
7584 no_tls_get_addr_opt = TRUE;
7586 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7587 return _bfd_elf_tls_setup (info->output_bfd, info);
7590 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7594 branch_reloc_hash_match (const bfd *ibfd,
7595 const Elf_Internal_Rela *rel,
7596 const struct ppc_link_hash_entry *hash1,
7597 const struct ppc_link_hash_entry *hash2)
7599 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7600 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7601 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7603 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7605 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7606 struct elf_link_hash_entry *h;
7608 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7609 h = elf_follow_link (h);
7610 if (h == &hash1->elf || h == &hash2->elf)
7616 /* Run through all the TLS relocs looking for optimization
7617 opportunities. The linker has been hacked (see ppc64elf.em) to do
7618 a preliminary section layout so that we know the TLS segment
7619 offsets. We can't optimize earlier because some optimizations need
7620 to know the tp offset, and we need to optimize before allocating
7621 dynamic relocations. */
7624 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7628 struct ppc_link_hash_table *htab;
7629 unsigned char *toc_ref;
7632 if (info->relocatable || !info->executable)
7635 htab = ppc_hash_table (info);
7639 /* Make two passes over the relocs. On the first pass, mark toc
7640 entries involved with tls relocs, and check that tls relocs
7641 involved in setting up a tls_get_addr call are indeed followed by
7642 such a call. If they are not, we can't do any tls optimization.
7643 On the second pass twiddle tls_mask flags to notify
7644 relocate_section that optimization can be done, and adjust got
7645 and plt refcounts. */
7647 for (pass = 0; pass < 2; ++pass)
7648 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7650 Elf_Internal_Sym *locsyms = NULL;
7651 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7653 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7654 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7656 Elf_Internal_Rela *relstart, *rel, *relend;
7657 bfd_boolean found_tls_get_addr_arg = 0;
7659 /* Read the relocations. */
7660 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7662 if (relstart == NULL)
7665 relend = relstart + sec->reloc_count;
7666 for (rel = relstart; rel < relend; rel++)
7668 enum elf_ppc64_reloc_type r_type;
7669 unsigned long r_symndx;
7670 struct elf_link_hash_entry *h;
7671 Elf_Internal_Sym *sym;
7673 unsigned char *tls_mask;
7674 unsigned char tls_set, tls_clear, tls_type = 0;
7676 bfd_boolean ok_tprel, is_local;
7677 long toc_ref_index = 0;
7678 int expecting_tls_get_addr = 0;
7679 bfd_boolean ret = FALSE;
7681 r_symndx = ELF64_R_SYM (rel->r_info);
7682 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7686 if (elf_section_data (sec)->relocs != relstart)
7688 if (toc_ref != NULL)
7691 && (elf_symtab_hdr (ibfd).contents
7692 != (unsigned char *) locsyms))
7699 if (h->root.type == bfd_link_hash_defined
7700 || h->root.type == bfd_link_hash_defweak)
7701 value = h->root.u.def.value;
7702 else if (h->root.type == bfd_link_hash_undefweak)
7706 found_tls_get_addr_arg = 0;
7711 /* Symbols referenced by TLS relocs must be of type
7712 STT_TLS. So no need for .opd local sym adjust. */
7713 value = sym->st_value;
7722 && h->root.type == bfd_link_hash_undefweak)
7726 value += sym_sec->output_offset;
7727 value += sym_sec->output_section->vma;
7728 value -= htab->elf.tls_sec->vma;
7729 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7730 < (bfd_vma) 1 << 32);
7734 r_type = ELF64_R_TYPE (rel->r_info);
7735 /* If this section has old-style __tls_get_addr calls
7736 without marker relocs, then check that each
7737 __tls_get_addr call reloc is preceded by a reloc
7738 that conceivably belongs to the __tls_get_addr arg
7739 setup insn. If we don't find matching arg setup
7740 relocs, don't do any tls optimization. */
7742 && sec->has_tls_get_addr_call
7744 && (h == &htab->tls_get_addr->elf
7745 || h == &htab->tls_get_addr_fd->elf)
7746 && !found_tls_get_addr_arg
7747 && is_branch_reloc (r_type))
7749 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
7750 "TLS optimization disabled\n"),
7751 ibfd, sec, rel->r_offset);
7756 found_tls_get_addr_arg = 0;
7759 case R_PPC64_GOT_TLSLD16:
7760 case R_PPC64_GOT_TLSLD16_LO:
7761 expecting_tls_get_addr = 1;
7762 found_tls_get_addr_arg = 1;
7765 case R_PPC64_GOT_TLSLD16_HI:
7766 case R_PPC64_GOT_TLSLD16_HA:
7767 /* These relocs should never be against a symbol
7768 defined in a shared lib. Leave them alone if
7769 that turns out to be the case. */
7776 tls_type = TLS_TLS | TLS_LD;
7779 case R_PPC64_GOT_TLSGD16:
7780 case R_PPC64_GOT_TLSGD16_LO:
7781 expecting_tls_get_addr = 1;
7782 found_tls_get_addr_arg = 1;
7785 case R_PPC64_GOT_TLSGD16_HI:
7786 case R_PPC64_GOT_TLSGD16_HA:
7792 tls_set = TLS_TLS | TLS_TPRELGD;
7794 tls_type = TLS_TLS | TLS_GD;
7797 case R_PPC64_GOT_TPREL16_DS:
7798 case R_PPC64_GOT_TPREL16_LO_DS:
7799 case R_PPC64_GOT_TPREL16_HI:
7800 case R_PPC64_GOT_TPREL16_HA:
7805 tls_clear = TLS_TPREL;
7806 tls_type = TLS_TLS | TLS_TPREL;
7813 found_tls_get_addr_arg = 1;
7818 case R_PPC64_TOC16_LO:
7819 if (sym_sec == NULL || sym_sec != toc)
7822 /* Mark this toc entry as referenced by a TLS
7823 code sequence. We can do that now in the
7824 case of R_PPC64_TLS, and after checking for
7825 tls_get_addr for the TOC16 relocs. */
7826 if (toc_ref == NULL)
7827 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7828 if (toc_ref == NULL)
7832 value = h->root.u.def.value;
7834 value = sym->st_value;
7835 value += rel->r_addend;
7836 BFD_ASSERT (value < toc->size && value % 8 == 0);
7837 toc_ref_index = (value + toc->output_offset) / 8;
7838 if (r_type == R_PPC64_TLS
7839 || r_type == R_PPC64_TLSGD
7840 || r_type == R_PPC64_TLSLD)
7842 toc_ref[toc_ref_index] = 1;
7846 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7851 expecting_tls_get_addr = 2;
7854 case R_PPC64_TPREL64:
7858 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7863 tls_set = TLS_EXPLICIT;
7864 tls_clear = TLS_TPREL;
7869 case R_PPC64_DTPMOD64:
7873 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7875 if (rel + 1 < relend
7877 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7878 && rel[1].r_offset == rel->r_offset + 8)
7882 tls_set = TLS_EXPLICIT | TLS_GD;
7885 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7894 tls_set = TLS_EXPLICIT;
7905 if (!expecting_tls_get_addr
7906 || !sec->has_tls_get_addr_call)
7909 if (rel + 1 < relend
7910 && branch_reloc_hash_match (ibfd, rel + 1,
7912 htab->tls_get_addr_fd))
7914 if (expecting_tls_get_addr == 2)
7916 /* Check for toc tls entries. */
7917 unsigned char *toc_tls;
7920 retval = get_tls_mask (&toc_tls, NULL, NULL,
7925 if (toc_tls != NULL)
7927 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7928 found_tls_get_addr_arg = 1;
7930 toc_ref[toc_ref_index] = 1;
7936 if (expecting_tls_get_addr != 1)
7939 /* Uh oh, we didn't find the expected call. We
7940 could just mark this symbol to exclude it
7941 from tls optimization but it's safer to skip
7942 the entire optimization. */
7943 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
7944 "TLS optimization disabled\n"),
7945 ibfd, sec, rel->r_offset);
7950 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7952 struct plt_entry *ent;
7953 for (ent = htab->tls_get_addr->elf.plt.plist;
7956 if (ent->addend == 0)
7958 if (ent->plt.refcount > 0)
7960 ent->plt.refcount -= 1;
7961 expecting_tls_get_addr = 0;
7967 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7969 struct plt_entry *ent;
7970 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7973 if (ent->addend == 0)
7975 if (ent->plt.refcount > 0)
7976 ent->plt.refcount -= 1;
7984 if ((tls_set & TLS_EXPLICIT) == 0)
7986 struct got_entry *ent;
7988 /* Adjust got entry for this reloc. */
7992 ent = elf_local_got_ents (ibfd)[r_symndx];
7994 for (; ent != NULL; ent = ent->next)
7995 if (ent->addend == rel->r_addend
7996 && ent->owner == ibfd
7997 && ent->tls_type == tls_type)
8004 /* We managed to get rid of a got entry. */
8005 if (ent->got.refcount > 0)
8006 ent->got.refcount -= 1;
8011 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8012 we'll lose one or two dyn relocs. */
8013 if (!dec_dynrel_count (rel->r_info, sec, info,
8017 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8019 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8025 *tls_mask |= tls_set;
8026 *tls_mask &= ~tls_clear;
8029 if (elf_section_data (sec)->relocs != relstart)
8034 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8036 if (!info->keep_memory)
8039 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8043 if (toc_ref != NULL)
8048 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8049 the values of any global symbols in a toc section that has been
8050 edited. Globals in toc sections should be a rarity, so this function
8051 sets a flag if any are found in toc sections other than the one just
8052 edited, so that futher hash table traversals can be avoided. */
8054 struct adjust_toc_info
8057 unsigned long *skip;
8058 bfd_boolean global_toc_syms;
8061 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8064 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8066 struct ppc_link_hash_entry *eh;
8067 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8070 if (h->root.type != bfd_link_hash_defined
8071 && h->root.type != bfd_link_hash_defweak)
8074 eh = (struct ppc_link_hash_entry *) h;
8075 if (eh->adjust_done)
8078 if (eh->elf.root.u.def.section == toc_inf->toc)
8080 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8081 i = toc_inf->toc->rawsize >> 3;
8083 i = eh->elf.root.u.def.value >> 3;
8085 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8087 (*_bfd_error_handler)
8088 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8091 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8092 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8095 eh->elf.root.u.def.value -= toc_inf->skip[i];
8096 eh->adjust_done = 1;
8098 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8099 toc_inf->global_toc_syms = TRUE;
8104 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8107 ok_lo_toc_insn (unsigned int insn)
8109 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8110 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8111 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8112 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8113 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8114 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8115 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8116 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8117 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8118 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8119 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8120 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8121 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8122 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8123 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8125 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8126 && ((insn & 3) == 0 || (insn & 3) == 3))
8127 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8130 /* Examine all relocs referencing .toc sections in order to remove
8131 unused .toc entries. */
8134 ppc64_elf_edit_toc (struct bfd_link_info *info)
8137 struct adjust_toc_info toc_inf;
8138 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8140 htab->do_toc_opt = 1;
8141 toc_inf.global_toc_syms = TRUE;
8142 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8144 asection *toc, *sec;
8145 Elf_Internal_Shdr *symtab_hdr;
8146 Elf_Internal_Sym *local_syms;
8147 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8148 unsigned long *skip, *drop;
8149 unsigned char *used;
8150 unsigned char *keep, last, some_unused;
8152 if (!is_ppc64_elf (ibfd))
8155 toc = bfd_get_section_by_name (ibfd, ".toc");
8158 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8159 || discarded_section (toc))
8164 symtab_hdr = &elf_symtab_hdr (ibfd);
8166 /* Look at sections dropped from the final link. */
8169 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8171 if (sec->reloc_count == 0
8172 || !discarded_section (sec)
8173 || get_opd_info (sec)
8174 || (sec->flags & SEC_ALLOC) == 0
8175 || (sec->flags & SEC_DEBUGGING) != 0)
8178 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8179 if (relstart == NULL)
8182 /* Run through the relocs to see which toc entries might be
8184 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8186 enum elf_ppc64_reloc_type r_type;
8187 unsigned long r_symndx;
8189 struct elf_link_hash_entry *h;
8190 Elf_Internal_Sym *sym;
8193 r_type = ELF64_R_TYPE (rel->r_info);
8200 case R_PPC64_TOC16_LO:
8201 case R_PPC64_TOC16_HI:
8202 case R_PPC64_TOC16_HA:
8203 case R_PPC64_TOC16_DS:
8204 case R_PPC64_TOC16_LO_DS:
8208 r_symndx = ELF64_R_SYM (rel->r_info);
8209 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8217 val = h->root.u.def.value;
8219 val = sym->st_value;
8220 val += rel->r_addend;
8222 if (val >= toc->size)
8225 /* Anything in the toc ought to be aligned to 8 bytes.
8226 If not, don't mark as unused. */
8232 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8237 skip[val >> 3] = ref_from_discarded;
8240 if (elf_section_data (sec)->relocs != relstart)
8244 /* For largetoc loads of address constants, we can convert
8245 . addis rx,2,addr@got@ha
8246 . ld ry,addr@got@l(rx)
8248 . addis rx,2,addr@toc@ha
8249 . addi ry,rx,addr@toc@l
8250 when addr is within 2G of the toc pointer. This then means
8251 that the word storing "addr" in the toc is no longer needed. */
8253 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8254 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8255 && toc->reloc_count != 0)
8257 /* Read toc relocs. */
8258 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8260 if (toc_relocs == NULL)
8263 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8265 enum elf_ppc64_reloc_type r_type;
8266 unsigned long r_symndx;
8268 struct elf_link_hash_entry *h;
8269 Elf_Internal_Sym *sym;
8272 r_type = ELF64_R_TYPE (rel->r_info);
8273 if (r_type != R_PPC64_ADDR64)
8276 r_symndx = ELF64_R_SYM (rel->r_info);
8277 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8282 || discarded_section (sym_sec))
8285 if (!SYMBOL_CALLS_LOCAL (info, h))
8290 if (h->type == STT_GNU_IFUNC)
8292 val = h->root.u.def.value;
8296 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8298 val = sym->st_value;
8300 val += rel->r_addend;
8301 val += sym_sec->output_section->vma + sym_sec->output_offset;
8303 /* We don't yet know the exact toc pointer value, but we
8304 know it will be somewhere in the toc section. Don't
8305 optimize if the difference from any possible toc
8306 pointer is outside [ff..f80008000, 7fff7fff]. */
8307 addr = toc->output_section->vma + TOC_BASE_OFF;
8308 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8311 addr = toc->output_section->vma + toc->output_section->rawsize;
8312 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8317 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8322 skip[rel->r_offset >> 3]
8323 |= can_optimize | ((rel - toc_relocs) << 2);
8330 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8334 if (local_syms != NULL
8335 && symtab_hdr->contents != (unsigned char *) local_syms)
8339 && elf_section_data (sec)->relocs != relstart)
8341 if (toc_relocs != NULL
8342 && elf_section_data (toc)->relocs != toc_relocs)
8349 /* Now check all kept sections that might reference the toc.
8350 Check the toc itself last. */
8351 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8354 sec = (sec == toc ? NULL
8355 : sec->next == NULL ? toc
8356 : sec->next == toc && toc->next ? toc->next
8361 if (sec->reloc_count == 0
8362 || discarded_section (sec)
8363 || get_opd_info (sec)
8364 || (sec->flags & SEC_ALLOC) == 0
8365 || (sec->flags & SEC_DEBUGGING) != 0)
8368 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8370 if (relstart == NULL)
8373 /* Mark toc entries referenced as used. */
8376 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8378 enum elf_ppc64_reloc_type r_type;
8379 unsigned long r_symndx;
8381 struct elf_link_hash_entry *h;
8382 Elf_Internal_Sym *sym;
8384 enum {no_check, check_lo, check_ha} insn_check;
8386 r_type = ELF64_R_TYPE (rel->r_info);
8390 insn_check = no_check;
8393 case R_PPC64_GOT_TLSLD16_HA:
8394 case R_PPC64_GOT_TLSGD16_HA:
8395 case R_PPC64_GOT_TPREL16_HA:
8396 case R_PPC64_GOT_DTPREL16_HA:
8397 case R_PPC64_GOT16_HA:
8398 case R_PPC64_TOC16_HA:
8399 insn_check = check_ha;
8402 case R_PPC64_GOT_TLSLD16_LO:
8403 case R_PPC64_GOT_TLSGD16_LO:
8404 case R_PPC64_GOT_TPREL16_LO_DS:
8405 case R_PPC64_GOT_DTPREL16_LO_DS:
8406 case R_PPC64_GOT16_LO:
8407 case R_PPC64_GOT16_LO_DS:
8408 case R_PPC64_TOC16_LO:
8409 case R_PPC64_TOC16_LO_DS:
8410 insn_check = check_lo;
8414 if (insn_check != no_check)
8416 bfd_vma off = rel->r_offset & ~3;
8417 unsigned char buf[4];
8420 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8425 insn = bfd_get_32 (ibfd, buf);
8426 if (insn_check == check_lo
8427 ? !ok_lo_toc_insn (insn)
8428 : ((insn & ((0x3f << 26) | 0x1f << 16))
8429 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8433 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8434 sprintf (str, "%#08x", insn);
8435 info->callbacks->einfo
8436 (_("%P: %H: toc optimization is not supported for"
8437 " %s instruction.\n"),
8438 ibfd, sec, rel->r_offset & ~3, str);
8445 case R_PPC64_TOC16_LO:
8446 case R_PPC64_TOC16_HI:
8447 case R_PPC64_TOC16_HA:
8448 case R_PPC64_TOC16_DS:
8449 case R_PPC64_TOC16_LO_DS:
8450 /* In case we're taking addresses of toc entries. */
8451 case R_PPC64_ADDR64:
8458 r_symndx = ELF64_R_SYM (rel->r_info);
8459 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8470 val = h->root.u.def.value;
8472 val = sym->st_value;
8473 val += rel->r_addend;
8475 if (val >= toc->size)
8478 if ((skip[val >> 3] & can_optimize) != 0)
8485 case R_PPC64_TOC16_HA:
8488 case R_PPC64_TOC16_LO_DS:
8489 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8490 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
8495 if ((opc & (0x3f << 2)) == (58u << 2))
8500 /* Wrong sort of reloc, or not a ld. We may
8501 as well clear ref_from_discarded too. */
8506 /* For the toc section, we only mark as used if
8507 this entry itself isn't unused. */
8510 && (used[rel->r_offset >> 3]
8511 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
8512 /* Do all the relocs again, to catch reference
8520 if (elf_section_data (sec)->relocs != relstart)
8524 /* Merge the used and skip arrays. Assume that TOC
8525 doublewords not appearing as either used or unused belong
8526 to to an entry more than one doubleword in size. */
8527 for (drop = skip, keep = used, last = 0, some_unused = 0;
8528 drop < skip + (toc->size + 7) / 8;
8533 *drop &= ~ref_from_discarded;
8534 if ((*drop & can_optimize) != 0)
8538 else if ((*drop & ref_from_discarded) != 0)
8541 last = ref_from_discarded;
8551 bfd_byte *contents, *src;
8553 Elf_Internal_Sym *sym;
8554 bfd_boolean local_toc_syms = FALSE;
8556 /* Shuffle the toc contents, and at the same time convert the
8557 skip array from booleans into offsets. */
8558 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8561 elf_section_data (toc)->this_hdr.contents = contents;
8563 for (src = contents, off = 0, drop = skip;
8564 src < contents + toc->size;
8567 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8572 memcpy (src - off, src, 8);
8576 toc->rawsize = toc->size;
8577 toc->size = src - contents - off;
8579 /* Adjust addends for relocs against the toc section sym,
8580 and optimize any accesses we can. */
8581 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8583 if (sec->reloc_count == 0
8584 || discarded_section (sec))
8587 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8589 if (relstart == NULL)
8592 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8594 enum elf_ppc64_reloc_type r_type;
8595 unsigned long r_symndx;
8597 struct elf_link_hash_entry *h;
8600 r_type = ELF64_R_TYPE (rel->r_info);
8607 case R_PPC64_TOC16_LO:
8608 case R_PPC64_TOC16_HI:
8609 case R_PPC64_TOC16_HA:
8610 case R_PPC64_TOC16_DS:
8611 case R_PPC64_TOC16_LO_DS:
8612 case R_PPC64_ADDR64:
8616 r_symndx = ELF64_R_SYM (rel->r_info);
8617 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8625 val = h->root.u.def.value;
8628 val = sym->st_value;
8630 local_toc_syms = TRUE;
8633 val += rel->r_addend;
8635 if (val > toc->rawsize)
8637 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8639 else if ((skip[val >> 3] & can_optimize) != 0)
8641 Elf_Internal_Rela *tocrel
8642 = toc_relocs + (skip[val >> 3] >> 2);
8643 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8647 case R_PPC64_TOC16_HA:
8648 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8651 case R_PPC64_TOC16_LO_DS:
8652 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8656 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8658 info->callbacks->einfo
8659 (_("%P: %H: %s relocation references "
8660 "optimized away TOC entry\n"),
8661 ibfd, sec, rel->r_offset,
8662 ppc64_elf_howto_table[r_type]->name);
8663 bfd_set_error (bfd_error_bad_value);
8666 rel->r_addend = tocrel->r_addend;
8667 elf_section_data (sec)->relocs = relstart;
8671 if (h != NULL || sym->st_value != 0)
8674 rel->r_addend -= skip[val >> 3];
8675 elf_section_data (sec)->relocs = relstart;
8678 if (elf_section_data (sec)->relocs != relstart)
8682 /* We shouldn't have local or global symbols defined in the TOC,
8683 but handle them anyway. */
8684 if (local_syms != NULL)
8685 for (sym = local_syms;
8686 sym < local_syms + symtab_hdr->sh_info;
8688 if (sym->st_value != 0
8689 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8693 if (sym->st_value > toc->rawsize)
8694 i = toc->rawsize >> 3;
8696 i = sym->st_value >> 3;
8698 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8701 (*_bfd_error_handler)
8702 (_("%s defined on removed toc entry"),
8703 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8706 while ((skip[i] & (ref_from_discarded | can_optimize)));
8707 sym->st_value = (bfd_vma) i << 3;
8710 sym->st_value -= skip[i];
8711 symtab_hdr->contents = (unsigned char *) local_syms;
8714 /* Adjust any global syms defined in this toc input section. */
8715 if (toc_inf.global_toc_syms)
8718 toc_inf.skip = skip;
8719 toc_inf.global_toc_syms = FALSE;
8720 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8724 if (toc->reloc_count != 0)
8726 Elf_Internal_Shdr *rel_hdr;
8727 Elf_Internal_Rela *wrel;
8730 /* Remove unused toc relocs, and adjust those we keep. */
8731 if (toc_relocs == NULL)
8732 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8734 if (toc_relocs == NULL)
8738 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8739 if ((skip[rel->r_offset >> 3]
8740 & (ref_from_discarded | can_optimize)) == 0)
8742 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8743 wrel->r_info = rel->r_info;
8744 wrel->r_addend = rel->r_addend;
8747 else if (!dec_dynrel_count (rel->r_info, toc, info,
8748 &local_syms, NULL, NULL))
8751 elf_section_data (toc)->relocs = toc_relocs;
8752 toc->reloc_count = wrel - toc_relocs;
8753 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8754 sz = rel_hdr->sh_entsize;
8755 rel_hdr->sh_size = toc->reloc_count * sz;
8758 else if (toc_relocs != NULL
8759 && elf_section_data (toc)->relocs != toc_relocs)
8762 if (local_syms != NULL
8763 && symtab_hdr->contents != (unsigned char *) local_syms)
8765 if (!info->keep_memory)
8768 symtab_hdr->contents = (unsigned char *) local_syms;
8776 /* Return true iff input section I references the TOC using
8777 instructions limited to +/-32k offsets. */
8780 ppc64_elf_has_small_toc_reloc (asection *i)
8782 return (is_ppc64_elf (i->owner)
8783 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8786 /* Allocate space for one GOT entry. */
8789 allocate_got (struct elf_link_hash_entry *h,
8790 struct bfd_link_info *info,
8791 struct got_entry *gent)
8793 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8795 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8796 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8798 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8799 ? 2 : 1) * sizeof (Elf64_External_Rela);
8800 asection *got = ppc64_elf_tdata (gent->owner)->got;
8802 gent->got.offset = got->size;
8803 got->size += entsize;
8805 dyn = htab->elf.dynamic_sections_created;
8807 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8808 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8809 || h->root.type != bfd_link_hash_undefweak))
8811 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8812 relgot->size += rentsize;
8814 else if (h->type == STT_GNU_IFUNC)
8816 asection *relgot = htab->reliplt;
8817 relgot->size += rentsize;
8818 htab->got_reli_size += rentsize;
8822 /* This function merges got entries in the same toc group. */
8825 merge_got_entries (struct got_entry **pent)
8827 struct got_entry *ent, *ent2;
8829 for (ent = *pent; ent != NULL; ent = ent->next)
8830 if (!ent->is_indirect)
8831 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8832 if (!ent2->is_indirect
8833 && ent2->addend == ent->addend
8834 && ent2->tls_type == ent->tls_type
8835 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8837 ent2->is_indirect = TRUE;
8838 ent2->got.ent = ent;
8842 /* Allocate space in .plt, .got and associated reloc sections for
8846 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8848 struct bfd_link_info *info;
8849 struct ppc_link_hash_table *htab;
8851 struct ppc_link_hash_entry *eh;
8852 struct elf_dyn_relocs *p;
8853 struct got_entry **pgent, *gent;
8855 if (h->root.type == bfd_link_hash_indirect)
8858 info = (struct bfd_link_info *) inf;
8859 htab = ppc_hash_table (info);
8863 if ((htab->elf.dynamic_sections_created
8865 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8866 || h->type == STT_GNU_IFUNC)
8868 struct plt_entry *pent;
8869 bfd_boolean doneone = FALSE;
8870 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8871 if (pent->plt.refcount > 0)
8873 if (!htab->elf.dynamic_sections_created
8874 || h->dynindx == -1)
8877 pent->plt.offset = s->size;
8878 s->size += PLT_ENTRY_SIZE;
8883 /* If this is the first .plt entry, make room for the special
8887 s->size += PLT_INITIAL_ENTRY_SIZE;
8889 pent->plt.offset = s->size;
8891 /* Make room for this entry. */
8892 s->size += PLT_ENTRY_SIZE;
8894 /* Make room for the .glink code. */
8897 s->size += GLINK_CALL_STUB_SIZE;
8898 /* We need bigger stubs past index 32767. */
8899 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8903 /* We also need to make an entry in the .rela.plt section. */
8906 s->size += sizeof (Elf64_External_Rela);
8910 pent->plt.offset = (bfd_vma) -1;
8913 h->plt.plist = NULL;
8919 h->plt.plist = NULL;
8923 eh = (struct ppc_link_hash_entry *) h;
8924 /* Run through the TLS GD got entries first if we're changing them
8926 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8927 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8928 if (gent->got.refcount > 0
8929 && (gent->tls_type & TLS_GD) != 0)
8931 /* This was a GD entry that has been converted to TPREL. If
8932 there happens to be a TPREL entry we can use that one. */
8933 struct got_entry *ent;
8934 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8935 if (ent->got.refcount > 0
8936 && (ent->tls_type & TLS_TPREL) != 0
8937 && ent->addend == gent->addend
8938 && ent->owner == gent->owner)
8940 gent->got.refcount = 0;
8944 /* If not, then we'll be using our own TPREL entry. */
8945 if (gent->got.refcount != 0)
8946 gent->tls_type = TLS_TLS | TLS_TPREL;
8949 /* Remove any list entry that won't generate a word in the GOT before
8950 we call merge_got_entries. Otherwise we risk merging to empty
8952 pgent = &h->got.glist;
8953 while ((gent = *pgent) != NULL)
8954 if (gent->got.refcount > 0)
8956 if ((gent->tls_type & TLS_LD) != 0
8959 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8960 *pgent = gent->next;
8963 pgent = &gent->next;
8966 *pgent = gent->next;
8968 if (!htab->do_multi_toc)
8969 merge_got_entries (&h->got.glist);
8971 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8972 if (!gent->is_indirect)
8974 /* Make sure this symbol is output as a dynamic symbol.
8975 Undefined weak syms won't yet be marked as dynamic,
8976 nor will all TLS symbols. */
8977 if (h->dynindx == -1
8979 && h->type != STT_GNU_IFUNC
8980 && htab->elf.dynamic_sections_created)
8982 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8986 if (!is_ppc64_elf (gent->owner))
8989 allocate_got (h, info, gent);
8992 if (eh->dyn_relocs == NULL
8993 || (!htab->elf.dynamic_sections_created
8994 && h->type != STT_GNU_IFUNC))
8997 /* In the shared -Bsymbolic case, discard space allocated for
8998 dynamic pc-relative relocs against symbols which turn out to be
8999 defined in regular objects. For the normal shared case, discard
9000 space for relocs that have become local due to symbol visibility
9005 /* Relocs that use pc_count are those that appear on a call insn,
9006 or certain REL relocs (see must_be_dyn_reloc) that can be
9007 generated via assembly. We want calls to protected symbols to
9008 resolve directly to the function rather than going via the plt.
9009 If people want function pointer comparisons to work as expected
9010 then they should avoid writing weird assembly. */
9011 if (SYMBOL_CALLS_LOCAL (info, h))
9013 struct elf_dyn_relocs **pp;
9015 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9017 p->count -= p->pc_count;
9026 /* Also discard relocs on undefined weak syms with non-default
9028 if (eh->dyn_relocs != NULL
9029 && h->root.type == bfd_link_hash_undefweak)
9031 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9032 eh->dyn_relocs = NULL;
9034 /* Make sure this symbol is output as a dynamic symbol.
9035 Undefined weak syms won't yet be marked as dynamic. */
9036 else if (h->dynindx == -1
9037 && !h->forced_local)
9039 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9044 else if (h->type == STT_GNU_IFUNC)
9046 if (!h->non_got_ref)
9047 eh->dyn_relocs = NULL;
9049 else if (ELIMINATE_COPY_RELOCS)
9051 /* For the non-shared case, discard space for relocs against
9052 symbols which turn out to need copy relocs or are not
9058 /* Make sure this symbol is output as a dynamic symbol.
9059 Undefined weak syms won't yet be marked as dynamic. */
9060 if (h->dynindx == -1
9061 && !h->forced_local)
9063 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9067 /* If that succeeded, we know we'll be keeping all the
9069 if (h->dynindx != -1)
9073 eh->dyn_relocs = NULL;
9078 /* Finally, allocate space. */
9079 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9081 asection *sreloc = elf_section_data (p->sec)->sreloc;
9082 if (!htab->elf.dynamic_sections_created)
9083 sreloc = htab->reliplt;
9084 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9090 /* Find any dynamic relocs that apply to read-only sections. */
9093 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9095 struct ppc_link_hash_entry *eh;
9096 struct elf_dyn_relocs *p;
9098 eh = (struct ppc_link_hash_entry *) h;
9099 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9101 asection *s = p->sec->output_section;
9103 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9105 struct bfd_link_info *info = inf;
9107 info->flags |= DF_TEXTREL;
9109 /* Not an error, just cut short the traversal. */
9116 /* Set the sizes of the dynamic sections. */
9119 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
9120 struct bfd_link_info *info)
9122 struct ppc_link_hash_table *htab;
9127 struct got_entry *first_tlsld;
9129 htab = ppc_hash_table (info);
9133 dynobj = htab->elf.dynobj;
9137 if (htab->elf.dynamic_sections_created)
9139 /* Set the contents of the .interp section to the interpreter. */
9140 if (info->executable)
9142 s = bfd_get_section_by_name (dynobj, ".interp");
9145 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9146 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9150 /* Set up .got offsets for local syms, and space for local dynamic
9152 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9154 struct got_entry **lgot_ents;
9155 struct got_entry **end_lgot_ents;
9156 struct plt_entry **local_plt;
9157 struct plt_entry **end_local_plt;
9158 unsigned char *lgot_masks;
9159 bfd_size_type locsymcount;
9160 Elf_Internal_Shdr *symtab_hdr;
9163 if (!is_ppc64_elf (ibfd))
9166 for (s = ibfd->sections; s != NULL; s = s->next)
9168 struct elf_dyn_relocs *p;
9170 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9172 if (!bfd_is_abs_section (p->sec)
9173 && bfd_is_abs_section (p->sec->output_section))
9175 /* Input section has been discarded, either because
9176 it is a copy of a linkonce section or due to
9177 linker script /DISCARD/, so we'll be discarding
9180 else if (p->count != 0)
9182 srel = elf_section_data (p->sec)->sreloc;
9183 if (!htab->elf.dynamic_sections_created)
9184 srel = htab->reliplt;
9185 srel->size += p->count * sizeof (Elf64_External_Rela);
9186 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9187 info->flags |= DF_TEXTREL;
9192 lgot_ents = elf_local_got_ents (ibfd);
9196 symtab_hdr = &elf_symtab_hdr (ibfd);
9197 locsymcount = symtab_hdr->sh_info;
9198 end_lgot_ents = lgot_ents + locsymcount;
9199 local_plt = (struct plt_entry **) end_lgot_ents;
9200 end_local_plt = local_plt + locsymcount;
9201 lgot_masks = (unsigned char *) end_local_plt;
9202 s = ppc64_elf_tdata (ibfd)->got;
9203 srel = ppc64_elf_tdata (ibfd)->relgot;
9204 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9206 struct got_entry **pent, *ent;
9209 while ((ent = *pent) != NULL)
9210 if (ent->got.refcount > 0)
9212 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9214 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9219 unsigned int num = 1;
9220 ent->got.offset = s->size;
9221 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9225 srel->size += num * sizeof (Elf64_External_Rela);
9226 else if ((*lgot_masks & PLT_IFUNC) != 0)
9229 += num * sizeof (Elf64_External_Rela);
9231 += num * sizeof (Elf64_External_Rela);
9240 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9241 for (; local_plt < end_local_plt; ++local_plt)
9243 struct plt_entry *ent;
9245 for (ent = *local_plt; ent != NULL; ent = ent->next)
9246 if (ent->plt.refcount > 0)
9249 ent->plt.offset = s->size;
9250 s->size += PLT_ENTRY_SIZE;
9252 htab->reliplt->size += sizeof (Elf64_External_Rela);
9255 ent->plt.offset = (bfd_vma) -1;
9259 /* Allocate global sym .plt and .got entries, and space for global
9260 sym dynamic relocs. */
9261 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9264 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9266 struct got_entry *ent;
9268 if (!is_ppc64_elf (ibfd))
9271 ent = ppc64_tlsld_got (ibfd);
9272 if (ent->got.refcount > 0)
9274 if (!htab->do_multi_toc && first_tlsld != NULL)
9276 ent->is_indirect = TRUE;
9277 ent->got.ent = first_tlsld;
9281 if (first_tlsld == NULL)
9283 s = ppc64_elf_tdata (ibfd)->got;
9284 ent->got.offset = s->size;
9289 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9290 srel->size += sizeof (Elf64_External_Rela);
9295 ent->got.offset = (bfd_vma) -1;
9298 /* We now have determined the sizes of the various dynamic sections.
9299 Allocate memory for them. */
9301 for (s = dynobj->sections; s != NULL; s = s->next)
9303 if ((s->flags & SEC_LINKER_CREATED) == 0)
9306 if (s == htab->brlt || s == htab->relbrlt)
9307 /* These haven't been allocated yet; don't strip. */
9309 else if (s == htab->got
9313 || s == htab->dynbss)
9315 /* Strip this section if we don't need it; see the
9318 else if (s == htab->glink_eh_frame)
9320 if (!bfd_is_abs_section (s->output_section))
9321 /* Not sized yet. */
9324 else if (CONST_STRNEQ (s->name, ".rela"))
9328 if (s != htab->relplt)
9331 /* We use the reloc_count field as a counter if we need
9332 to copy relocs into the output file. */
9338 /* It's not one of our sections, so don't allocate space. */
9344 /* If we don't need this section, strip it from the
9345 output file. This is mostly to handle .rela.bss and
9346 .rela.plt. We must create both sections in
9347 create_dynamic_sections, because they must be created
9348 before the linker maps input sections to output
9349 sections. The linker does that before
9350 adjust_dynamic_symbol is called, and it is that
9351 function which decides whether anything needs to go
9352 into these sections. */
9353 s->flags |= SEC_EXCLUDE;
9357 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9360 /* Allocate memory for the section contents. We use bfd_zalloc
9361 here in case unused entries are not reclaimed before the
9362 section's contents are written out. This should not happen,
9363 but this way if it does we get a R_PPC64_NONE reloc in .rela
9364 sections instead of garbage.
9365 We also rely on the section contents being zero when writing
9367 s->contents = bfd_zalloc (dynobj, s->size);
9368 if (s->contents == NULL)
9372 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9374 if (!is_ppc64_elf (ibfd))
9377 s = ppc64_elf_tdata (ibfd)->got;
9378 if (s != NULL && s != htab->got)
9381 s->flags |= SEC_EXCLUDE;
9384 s->contents = bfd_zalloc (ibfd, s->size);
9385 if (s->contents == NULL)
9389 s = ppc64_elf_tdata (ibfd)->relgot;
9393 s->flags |= SEC_EXCLUDE;
9396 s->contents = bfd_zalloc (ibfd, s->size);
9397 if (s->contents == NULL)
9405 if (htab->elf.dynamic_sections_created)
9407 /* Add some entries to the .dynamic section. We fill in the
9408 values later, in ppc64_elf_finish_dynamic_sections, but we
9409 must add the entries now so that we get the correct size for
9410 the .dynamic section. The DT_DEBUG entry is filled in by the
9411 dynamic linker and used by the debugger. */
9412 #define add_dynamic_entry(TAG, VAL) \
9413 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9415 if (info->executable)
9417 if (!add_dynamic_entry (DT_DEBUG, 0))
9421 if (htab->plt != NULL && htab->plt->size != 0)
9423 if (!add_dynamic_entry (DT_PLTGOT, 0)
9424 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9425 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9426 || !add_dynamic_entry (DT_JMPREL, 0)
9427 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9433 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9434 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9438 if (!htab->no_tls_get_addr_opt
9439 && htab->tls_get_addr_fd != NULL
9440 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9441 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9446 if (!add_dynamic_entry (DT_RELA, 0)
9447 || !add_dynamic_entry (DT_RELASZ, 0)
9448 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9451 /* If any dynamic relocs apply to a read-only section,
9452 then we need a DT_TEXTREL entry. */
9453 if ((info->flags & DF_TEXTREL) == 0)
9454 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9456 if ((info->flags & DF_TEXTREL) != 0)
9458 if (!add_dynamic_entry (DT_TEXTREL, 0))
9463 #undef add_dynamic_entry
9468 /* Determine the type of stub needed, if any, for a call. */
9470 static inline enum ppc_stub_type
9471 ppc_type_of_stub (asection *input_sec,
9472 const Elf_Internal_Rela *rel,
9473 struct ppc_link_hash_entry **hash,
9474 struct plt_entry **plt_ent,
9475 bfd_vma destination)
9477 struct ppc_link_hash_entry *h = *hash;
9479 bfd_vma branch_offset;
9480 bfd_vma max_branch_offset;
9481 enum elf_ppc64_reloc_type r_type;
9485 struct plt_entry *ent;
9486 struct ppc_link_hash_entry *fdh = h;
9488 && h->oh->is_func_descriptor)
9490 fdh = ppc_follow_link (h->oh);
9494 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9495 if (ent->addend == rel->r_addend
9496 && ent->plt.offset != (bfd_vma) -1)
9499 return ppc_stub_plt_call;
9502 /* Here, we know we don't have a plt entry. If we don't have a
9503 either a defined function descriptor or a defined entry symbol
9504 in a regular object file, then it is pointless trying to make
9505 any other type of stub. */
9506 if (!is_static_defined (&fdh->elf)
9507 && !is_static_defined (&h->elf))
9508 return ppc_stub_none;
9510 else if (elf_local_got_ents (input_sec->owner) != NULL)
9512 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9513 struct plt_entry **local_plt = (struct plt_entry **)
9514 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9515 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9517 if (local_plt[r_symndx] != NULL)
9519 struct plt_entry *ent;
9521 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9522 if (ent->addend == rel->r_addend
9523 && ent->plt.offset != (bfd_vma) -1)
9526 return ppc_stub_plt_call;
9531 /* Determine where the call point is. */
9532 location = (input_sec->output_offset
9533 + input_sec->output_section->vma
9536 branch_offset = destination - location;
9537 r_type = ELF64_R_TYPE (rel->r_info);
9539 /* Determine if a long branch stub is needed. */
9540 max_branch_offset = 1 << 25;
9541 if (r_type != R_PPC64_REL24)
9542 max_branch_offset = 1 << 15;
9544 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9545 /* We need a stub. Figure out whether a long_branch or plt_branch
9547 return ppc_stub_long_branch;
9549 return ppc_stub_none;
9552 /* With power7 weakly ordered memory model, it is possible for ld.so
9553 to update a plt entry in one thread and have another thread see a
9554 stale zero toc entry. To avoid this we need some sort of acquire
9555 barrier in the call stub. One solution is to make the load of the
9556 toc word seem to appear to depend on the load of the function entry
9557 word. Another solution is to test for r2 being zero, and branch to
9558 the appropriate glink entry if so.
9560 . fake dep barrier compare
9561 . ld 11,xxx(2) ld 11,xxx(2)
9563 . xor 11,11,11 ld 2,xxx+8(2)
9564 . add 2,2,11 cmpldi 2,0
9565 . ld 2,xxx+8(2) bnectr+
9566 . bctr b <glink_entry>
9568 The solution involving the compare turns out to be faster, so
9569 that's what we use unless the branch won't reach. */
9571 #define ALWAYS_USE_FAKE_DEP 0
9572 #define ALWAYS_EMIT_R2SAVE 0
9574 #define PPC_LO(v) ((v) & 0xffff)
9575 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9576 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9578 static inline unsigned int
9579 plt_stub_size (struct ppc_link_hash_table *htab,
9580 struct ppc_stub_hash_entry *stub_entry,
9583 unsigned size = PLT_CALL_STUB_SIZE;
9585 if (!(ALWAYS_EMIT_R2SAVE
9586 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
9588 if (!htab->plt_static_chain)
9590 if (htab->plt_thread_safe)
9592 if (PPC_HA (off) == 0)
9594 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
9596 if (stub_entry->h != NULL
9597 && (stub_entry->h == htab->tls_get_addr_fd
9598 || stub_entry->h == htab->tls_get_addr)
9599 && !htab->no_tls_get_addr_opt)
9604 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9605 then return the padding needed to do so. */
9606 static inline unsigned int
9607 plt_stub_pad (struct ppc_link_hash_table *htab,
9608 struct ppc_stub_hash_entry *stub_entry,
9611 int stub_align = 1 << htab->plt_stub_align;
9612 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
9613 bfd_vma stub_off = stub_entry->stub_sec->size;
9615 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
9616 > (stub_size & -stub_align))
9617 return stub_align - (stub_off & (stub_align - 1));
9621 /* Build a .plt call stub. */
9623 static inline bfd_byte *
9624 build_plt_stub (struct ppc_link_hash_table *htab,
9625 struct ppc_stub_hash_entry *stub_entry,
9626 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9628 bfd *obfd = htab->stub_bfd;
9629 bfd_boolean plt_static_chain = htab->plt_static_chain;
9630 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
9631 bfd_boolean use_fake_dep = plt_thread_safe;
9632 bfd_vma cmp_branch_off = 0;
9634 if (!ALWAYS_USE_FAKE_DEP
9636 && !(stub_entry->h != NULL
9637 && (stub_entry->h == htab->tls_get_addr_fd
9638 || stub_entry->h == htab->tls_get_addr)
9639 && !htab->no_tls_get_addr_opt))
9641 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
9642 bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9643 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
9646 if (pltindex > 32767)
9647 glinkoff += (pltindex - 32767) * 4;
9649 + htab->glink->output_offset
9650 + htab->glink->output_section->vma);
9651 from = (p - stub_entry->stub_sec->contents
9652 + 4 * (ALWAYS_EMIT_R2SAVE
9653 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9654 + 4 * (PPC_HA (offset) != 0)
9655 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
9657 + 4 * (plt_static_chain != 0)
9659 + stub_entry->stub_sec->output_offset
9660 + stub_entry->stub_sec->output_section->vma);
9661 cmp_branch_off = to - from;
9662 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
9665 if (PPC_HA (offset) != 0)
9669 if (ALWAYS_EMIT_R2SAVE
9670 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9672 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9673 r[1].r_offset = r[0].r_offset + 4;
9674 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9675 r[1].r_addend = r[0].r_addend;
9676 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9678 r[2].r_offset = r[1].r_offset + 4;
9679 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9680 r[2].r_addend = r[0].r_addend;
9684 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
9685 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9686 r[2].r_addend = r[0].r_addend + 8;
9687 if (plt_static_chain)
9689 r[3].r_offset = r[2].r_offset + 4;
9690 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9691 r[3].r_addend = r[0].r_addend + 16;
9695 if (ALWAYS_EMIT_R2SAVE
9696 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9697 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9698 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9699 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9700 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9702 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9705 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9708 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9709 bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4;
9711 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9712 if (plt_static_chain)
9713 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9719 if (ALWAYS_EMIT_R2SAVE
9720 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9722 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9723 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9725 r[1].r_offset = r[0].r_offset + 4;
9726 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9727 r[1].r_addend = r[0].r_addend;
9731 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
9732 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9733 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
9734 if (plt_static_chain)
9736 r[2].r_offset = r[1].r_offset + 4;
9737 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9738 r[2].r_addend = r[0].r_addend + 8;
9742 if (ALWAYS_EMIT_R2SAVE
9743 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9744 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9745 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9746 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9748 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9751 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9754 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9755 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
9757 if (plt_static_chain)
9758 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9759 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9761 if (plt_thread_safe && !use_fake_dep)
9763 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
9764 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
9765 bfd_put_32 (obfd, B_DOT + cmp_branch_off, p), p += 4;
9768 bfd_put_32 (obfd, BCTR, p), p += 4;
9772 /* Build a special .plt call stub for __tls_get_addr. */
9774 #define LD_R11_0R3 0xe9630000
9775 #define LD_R12_0R3 0xe9830000
9776 #define MR_R0_R3 0x7c601b78
9777 #define CMPDI_R11_0 0x2c2b0000
9778 #define ADD_R3_R12_R13 0x7c6c6a14
9779 #define BEQLR 0x4d820020
9780 #define MR_R3_R0 0x7c030378
9781 #define MFLR_R11 0x7d6802a6
9782 #define STD_R11_0R1 0xf9610000
9783 #define BCTRL 0x4e800421
9784 #define LD_R11_0R1 0xe9610000
9785 #define LD_R2_0R1 0xe8410000
9786 #define MTLR_R11 0x7d6803a6
9788 static inline bfd_byte *
9789 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
9790 struct ppc_stub_hash_entry *stub_entry,
9791 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9793 bfd *obfd = htab->stub_bfd;
9795 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9796 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9797 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9798 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9799 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9800 bfd_put_32 (obfd, BEQLR, p), p += 4;
9801 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9802 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9803 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9806 r[0].r_offset += 9 * 4;
9807 p = build_plt_stub (htab, stub_entry, p, offset, r);
9808 bfd_put_32 (obfd, BCTRL, p - 4);
9810 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9811 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9812 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9813 bfd_put_32 (obfd, BLR, p), p += 4;
9818 static Elf_Internal_Rela *
9819 get_relocs (asection *sec, int count)
9821 Elf_Internal_Rela *relocs;
9822 struct bfd_elf_section_data *elfsec_data;
9824 elfsec_data = elf_section_data (sec);
9825 relocs = elfsec_data->relocs;
9828 bfd_size_type relsize;
9829 relsize = sec->reloc_count * sizeof (*relocs);
9830 relocs = bfd_alloc (sec->owner, relsize);
9833 elfsec_data->relocs = relocs;
9834 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9835 sizeof (Elf_Internal_Shdr));
9836 if (elfsec_data->rela.hdr == NULL)
9838 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9839 * sizeof (Elf64_External_Rela));
9840 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
9841 sec->reloc_count = 0;
9843 relocs += sec->reloc_count;
9844 sec->reloc_count += count;
9849 get_r2off (struct bfd_link_info *info,
9850 struct ppc_stub_hash_entry *stub_entry)
9852 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9853 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9857 /* Support linking -R objects. Get the toc pointer from the
9860 asection *opd = stub_entry->h->elf.root.u.def.section;
9861 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9863 if (strcmp (opd->name, ".opd") != 0
9864 || opd->reloc_count != 0)
9866 info->callbacks->einfo (_("%P: cannot find opd entry toc for %s\n"),
9867 stub_entry->h->elf.root.root.string);
9868 bfd_set_error (bfd_error_bad_value);
9871 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9873 r2off = bfd_get_64 (opd->owner, buf);
9874 r2off -= elf_gp (info->output_bfd);
9876 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9881 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9883 struct ppc_stub_hash_entry *stub_entry;
9884 struct ppc_branch_hash_entry *br_entry;
9885 struct bfd_link_info *info;
9886 struct ppc_link_hash_table *htab;
9891 Elf_Internal_Rela *r;
9894 /* Massage our args to the form they really have. */
9895 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9898 htab = ppc_hash_table (info);
9902 /* Make a note of the offset within the stubs for this entry. */
9903 stub_entry->stub_offset = stub_entry->stub_sec->size;
9904 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9906 htab->stub_count[stub_entry->stub_type - 1] += 1;
9907 switch (stub_entry->stub_type)
9909 case ppc_stub_long_branch:
9910 case ppc_stub_long_branch_r2off:
9911 /* Branches are relative. This is where we are going to. */
9912 off = dest = (stub_entry->target_value
9913 + stub_entry->target_section->output_offset
9914 + stub_entry->target_section->output_section->vma);
9916 /* And this is where we are coming from. */
9917 off -= (stub_entry->stub_offset
9918 + stub_entry->stub_sec->output_offset
9919 + stub_entry->stub_sec->output_section->vma);
9922 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9924 bfd_vma r2off = get_r2off (info, stub_entry);
9928 htab->stub_error = TRUE;
9931 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9934 if (PPC_HA (r2off) != 0)
9937 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9940 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9944 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9946 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9948 info->callbacks->einfo (_("%P: long branch stub `%s' offset overflow\n"),
9949 stub_entry->root.string);
9950 htab->stub_error = TRUE;
9954 if (info->emitrelocations)
9956 r = get_relocs (stub_entry->stub_sec, 1);
9959 r->r_offset = loc - stub_entry->stub_sec->contents;
9960 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9962 if (stub_entry->h != NULL)
9964 struct elf_link_hash_entry **hashes;
9965 unsigned long symndx;
9966 struct ppc_link_hash_entry *h;
9968 hashes = elf_sym_hashes (htab->stub_bfd);
9971 bfd_size_type hsize;
9973 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9974 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9977 elf_sym_hashes (htab->stub_bfd) = hashes;
9978 htab->stub_globals = 1;
9980 symndx = htab->stub_globals++;
9982 hashes[symndx] = &h->elf;
9983 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9984 if (h->oh != NULL && h->oh->is_func)
9985 h = ppc_follow_link (h->oh);
9986 if (h->elf.root.u.def.section != stub_entry->target_section)
9987 /* H is an opd symbol. The addend must be zero. */
9991 off = (h->elf.root.u.def.value
9992 + h->elf.root.u.def.section->output_offset
9993 + h->elf.root.u.def.section->output_section->vma);
10000 case ppc_stub_plt_branch:
10001 case ppc_stub_plt_branch_r2off:
10002 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10003 stub_entry->root.string + 9,
10005 if (br_entry == NULL)
10007 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10008 stub_entry->root.string);
10009 htab->stub_error = TRUE;
10013 dest = (stub_entry->target_value
10014 + stub_entry->target_section->output_offset
10015 + stub_entry->target_section->output_section->vma);
10017 bfd_put_64 (htab->brlt->owner, dest,
10018 htab->brlt->contents + br_entry->offset);
10020 if (br_entry->iter == htab->stub_iteration)
10022 br_entry->iter = 0;
10024 if (htab->relbrlt != NULL)
10026 /* Create a reloc for the branch lookup table entry. */
10027 Elf_Internal_Rela rela;
10030 rela.r_offset = (br_entry->offset
10031 + htab->brlt->output_offset
10032 + htab->brlt->output_section->vma);
10033 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10034 rela.r_addend = dest;
10036 rl = htab->relbrlt->contents;
10037 rl += (htab->relbrlt->reloc_count++
10038 * sizeof (Elf64_External_Rela));
10039 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10041 else if (info->emitrelocations)
10043 r = get_relocs (htab->brlt, 1);
10046 /* brlt, being SEC_LINKER_CREATED does not go through the
10047 normal reloc processing. Symbols and offsets are not
10048 translated from input file to output file form, so
10049 set up the offset per the output file. */
10050 r->r_offset = (br_entry->offset
10051 + htab->brlt->output_offset
10052 + htab->brlt->output_section->vma);
10053 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10054 r->r_addend = dest;
10058 dest = (br_entry->offset
10059 + htab->brlt->output_offset
10060 + htab->brlt->output_section->vma);
10063 - elf_gp (htab->brlt->output_section->owner)
10064 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10066 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10068 info->callbacks->einfo
10069 (_("%P: linkage table error against `%s'\n"),
10070 stub_entry->root.string);
10071 bfd_set_error (bfd_error_bad_value);
10072 htab->stub_error = TRUE;
10076 if (info->emitrelocations)
10078 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10081 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10082 if (bfd_big_endian (info->output_bfd))
10083 r[0].r_offset += 2;
10084 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10085 r[0].r_offset += 4;
10086 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10087 r[0].r_addend = dest;
10088 if (PPC_HA (off) != 0)
10090 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10091 r[1].r_offset = r[0].r_offset + 4;
10092 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10093 r[1].r_addend = r[0].r_addend;
10097 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10099 if (PPC_HA (off) != 0)
10102 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10104 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10109 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10114 bfd_vma r2off = get_r2off (info, stub_entry);
10118 htab->stub_error = TRUE;
10122 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10125 if (PPC_HA (off) != 0)
10128 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10130 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10135 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10139 if (PPC_HA (r2off) != 0)
10142 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10145 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10148 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
10150 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10153 case ppc_stub_plt_call:
10154 case ppc_stub_plt_call_r2save:
10155 if (stub_entry->h != NULL
10156 && stub_entry->h->is_func_descriptor
10157 && stub_entry->h->oh != NULL)
10159 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10161 /* If the old-ABI "dot-symbol" is undefined make it weak so
10162 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10163 FIXME: We used to define the symbol on one of the call
10164 stubs instead, which is why we test symbol section id
10165 against htab->top_id in various places. Likely all
10166 these checks could now disappear. */
10167 if (fh->elf.root.type == bfd_link_hash_undefined)
10168 fh->elf.root.type = bfd_link_hash_undefweak;
10169 /* Stop undo_symbol_twiddle changing it back to undefined. */
10170 fh->was_undefined = 0;
10173 /* Now build the stub. */
10174 dest = stub_entry->plt_ent->plt.offset & ~1;
10175 if (dest >= (bfd_vma) -2)
10179 if (!htab->elf.dynamic_sections_created
10180 || stub_entry->h == NULL
10181 || stub_entry->h->elf.dynindx == -1)
10184 dest += plt->output_offset + plt->output_section->vma;
10186 if (stub_entry->h == NULL
10187 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10189 Elf_Internal_Rela rela;
10192 rela.r_offset = dest;
10193 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10194 rela.r_addend = (stub_entry->target_value
10195 + stub_entry->target_section->output_offset
10196 + stub_entry->target_section->output_section->vma);
10198 rl = (htab->reliplt->contents
10199 + (htab->reliplt->reloc_count++
10200 * sizeof (Elf64_External_Rela)));
10201 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10202 stub_entry->plt_ent->plt.offset |= 1;
10206 - elf_gp (plt->output_section->owner)
10207 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10209 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10211 info->callbacks->einfo
10212 (_("%P: linkage table error against `%s'\n"),
10213 stub_entry->h != NULL
10214 ? stub_entry->h->elf.root.root.string
10216 bfd_set_error (bfd_error_bad_value);
10217 htab->stub_error = TRUE;
10221 if (htab->plt_stub_align != 0)
10223 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10225 stub_entry->stub_sec->size += pad;
10226 stub_entry->stub_offset = stub_entry->stub_sec->size;
10231 if (info->emitrelocations)
10233 r = get_relocs (stub_entry->stub_sec,
10235 + (PPC_HA (off) != 0)
10236 + (htab->plt_static_chain
10237 && PPC_HA (off + 16) == PPC_HA (off))));
10240 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10241 if (bfd_big_endian (info->output_bfd))
10242 r[0].r_offset += 2;
10243 r[0].r_addend = dest;
10245 if (stub_entry->h != NULL
10246 && (stub_entry->h == htab->tls_get_addr_fd
10247 || stub_entry->h == htab->tls_get_addr)
10248 && !htab->no_tls_get_addr_opt)
10249 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10251 p = build_plt_stub (htab, stub_entry, loc, off, r);
10260 stub_entry->stub_sec->size += size;
10262 if (htab->emit_stub_syms)
10264 struct elf_link_hash_entry *h;
10267 const char *const stub_str[] = { "long_branch",
10268 "long_branch_r2off",
10270 "plt_branch_r2off",
10274 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10275 len2 = strlen (stub_entry->root.string);
10276 name = bfd_malloc (len1 + len2 + 2);
10279 memcpy (name, stub_entry->root.string, 9);
10280 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10281 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10282 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10285 if (h->root.type == bfd_link_hash_new)
10287 h->root.type = bfd_link_hash_defined;
10288 h->root.u.def.section = stub_entry->stub_sec;
10289 h->root.u.def.value = stub_entry->stub_offset;
10290 h->ref_regular = 1;
10291 h->def_regular = 1;
10292 h->ref_regular_nonweak = 1;
10293 h->forced_local = 1;
10301 /* As above, but don't actually build the stub. Just bump offset so
10302 we know stub section sizes, and select plt_branch stubs where
10303 long_branch stubs won't do. */
10306 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10308 struct ppc_stub_hash_entry *stub_entry;
10309 struct bfd_link_info *info;
10310 struct ppc_link_hash_table *htab;
10314 /* Massage our args to the form they really have. */
10315 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10318 htab = ppc_hash_table (info);
10322 if (stub_entry->stub_type == ppc_stub_plt_call
10323 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10326 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10327 if (off >= (bfd_vma) -2)
10330 if (!htab->elf.dynamic_sections_created
10331 || stub_entry->h == NULL
10332 || stub_entry->h->elf.dynindx == -1)
10334 off += (plt->output_offset
10335 + plt->output_section->vma
10336 - elf_gp (plt->output_section->owner)
10337 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10339 size = plt_stub_size (htab, stub_entry, off);
10340 if (htab->plt_stub_align)
10341 size += plt_stub_pad (htab, stub_entry, off);
10342 if (info->emitrelocations)
10344 stub_entry->stub_sec->reloc_count
10346 + (PPC_HA (off) != 0)
10347 + (htab->plt_static_chain
10348 && PPC_HA (off + 16) == PPC_HA (off)));
10349 stub_entry->stub_sec->flags |= SEC_RELOC;
10354 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10358 off = (stub_entry->target_value
10359 + stub_entry->target_section->output_offset
10360 + stub_entry->target_section->output_section->vma);
10361 off -= (stub_entry->stub_sec->size
10362 + stub_entry->stub_sec->output_offset
10363 + stub_entry->stub_sec->output_section->vma);
10365 /* Reset the stub type from the plt variant in case we now
10366 can reach with a shorter stub. */
10367 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10368 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10371 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10373 r2off = get_r2off (info, stub_entry);
10376 htab->stub_error = TRUE;
10380 if (PPC_HA (r2off) != 0)
10385 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10386 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10388 struct ppc_branch_hash_entry *br_entry;
10390 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10391 stub_entry->root.string + 9,
10393 if (br_entry == NULL)
10395 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10396 stub_entry->root.string);
10397 htab->stub_error = TRUE;
10401 if (br_entry->iter != htab->stub_iteration)
10403 br_entry->iter = htab->stub_iteration;
10404 br_entry->offset = htab->brlt->size;
10405 htab->brlt->size += 8;
10407 if (htab->relbrlt != NULL)
10408 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10409 else if (info->emitrelocations)
10411 htab->brlt->reloc_count += 1;
10412 htab->brlt->flags |= SEC_RELOC;
10416 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10417 off = (br_entry->offset
10418 + htab->brlt->output_offset
10419 + htab->brlt->output_section->vma
10420 - elf_gp (htab->brlt->output_section->owner)
10421 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10423 if (info->emitrelocations)
10425 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10426 stub_entry->stub_sec->flags |= SEC_RELOC;
10429 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10432 if (PPC_HA (off) != 0)
10438 if (PPC_HA (off) != 0)
10441 if (PPC_HA (r2off) != 0)
10445 else if (info->emitrelocations)
10447 stub_entry->stub_sec->reloc_count += 1;
10448 stub_entry->stub_sec->flags |= SEC_RELOC;
10452 stub_entry->stub_sec->size += size;
10456 /* Set up various things so that we can make a list of input sections
10457 for each output section included in the link. Returns -1 on error,
10458 0 when no stubs will be needed, and 1 on success. */
10461 ppc64_elf_setup_section_lists
10462 (struct bfd_link_info *info,
10463 asection *(*add_stub_section) (const char *, asection *),
10464 void (*layout_sections_again) (void))
10467 int top_id, top_index, id;
10469 asection **input_list;
10471 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10475 /* Stash our params away. */
10476 htab->add_stub_section = add_stub_section;
10477 htab->layout_sections_again = layout_sections_again;
10479 if (htab->brlt == NULL)
10482 /* Find the top input section id. */
10483 for (input_bfd = info->input_bfds, top_id = 3;
10485 input_bfd = input_bfd->link_next)
10487 for (section = input_bfd->sections;
10489 section = section->next)
10491 if (top_id < section->id)
10492 top_id = section->id;
10496 htab->top_id = top_id;
10497 amt = sizeof (struct map_stub) * (top_id + 1);
10498 htab->stub_group = bfd_zmalloc (amt);
10499 if (htab->stub_group == NULL)
10502 /* Set toc_off for com, und, abs and ind sections. */
10503 for (id = 0; id < 3; id++)
10504 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10506 /* We can't use output_bfd->section_count here to find the top output
10507 section index as some sections may have been removed, and
10508 strip_excluded_output_sections doesn't renumber the indices. */
10509 for (section = info->output_bfd->sections, top_index = 0;
10511 section = section->next)
10513 if (top_index < section->index)
10514 top_index = section->index;
10517 htab->top_index = top_index;
10518 amt = sizeof (asection *) * (top_index + 1);
10519 input_list = bfd_zmalloc (amt);
10520 htab->input_list = input_list;
10521 if (input_list == NULL)
10527 /* Set up for first pass at multitoc partitioning. */
10530 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10532 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10534 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10535 htab->toc_curr = elf_gp (info->output_bfd);
10536 htab->toc_bfd = NULL;
10537 htab->toc_first_sec = NULL;
10540 /* The linker repeatedly calls this function for each TOC input section
10541 and linker generated GOT section. Group input bfds such that the toc
10542 within a group is less than 64k in size. */
10545 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10547 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10548 bfd_vma addr, off, limit;
10553 if (!htab->second_toc_pass)
10555 /* Keep track of the first .toc or .got section for this input bfd. */
10556 if (htab->toc_bfd != isec->owner)
10558 htab->toc_bfd = isec->owner;
10559 htab->toc_first_sec = isec;
10562 addr = isec->output_offset + isec->output_section->vma;
10563 off = addr - htab->toc_curr;
10564 limit = 0x80008000;
10565 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10567 if (off + isec->size > limit)
10569 addr = (htab->toc_first_sec->output_offset
10570 + htab->toc_first_sec->output_section->vma);
10571 htab->toc_curr = addr;
10574 /* toc_curr is the base address of this toc group. Set elf_gp
10575 for the input section to be the offset relative to the
10576 output toc base plus 0x8000. Making the input elf_gp an
10577 offset allows us to move the toc as a whole without
10578 recalculating input elf_gp. */
10579 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10580 off += TOC_BASE_OFF;
10582 /* Die if someone uses a linker script that doesn't keep input
10583 file .toc and .got together. */
10584 if (elf_gp (isec->owner) != 0
10585 && elf_gp (isec->owner) != off)
10588 elf_gp (isec->owner) = off;
10592 /* During the second pass toc_first_sec points to the start of
10593 a toc group, and toc_curr is used to track the old elf_gp.
10594 We use toc_bfd to ensure we only look at each bfd once. */
10595 if (htab->toc_bfd == isec->owner)
10597 htab->toc_bfd = isec->owner;
10599 if (htab->toc_first_sec == NULL
10600 || htab->toc_curr != elf_gp (isec->owner))
10602 htab->toc_curr = elf_gp (isec->owner);
10603 htab->toc_first_sec = isec;
10605 addr = (htab->toc_first_sec->output_offset
10606 + htab->toc_first_sec->output_section->vma);
10607 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10608 elf_gp (isec->owner) = off;
10613 /* Called via elf_link_hash_traverse to merge GOT entries for global
10617 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10619 if (h->root.type == bfd_link_hash_indirect)
10622 merge_got_entries (&h->got.glist);
10627 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10631 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10633 struct got_entry *gent;
10635 if (h->root.type == bfd_link_hash_indirect)
10638 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10639 if (!gent->is_indirect)
10640 allocate_got (h, (struct bfd_link_info *) inf, gent);
10644 /* Called on the first multitoc pass after the last call to
10645 ppc64_elf_next_toc_section. This function removes duplicate GOT
10649 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10651 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10652 struct bfd *ibfd, *ibfd2;
10653 bfd_boolean done_something;
10655 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10657 if (!htab->do_multi_toc)
10660 /* Merge global sym got entries within a toc group. */
10661 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10663 /* And tlsld_got. */
10664 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10666 struct got_entry *ent, *ent2;
10668 if (!is_ppc64_elf (ibfd))
10671 ent = ppc64_tlsld_got (ibfd);
10672 if (!ent->is_indirect
10673 && ent->got.offset != (bfd_vma) -1)
10675 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10677 if (!is_ppc64_elf (ibfd2))
10680 ent2 = ppc64_tlsld_got (ibfd2);
10681 if (!ent2->is_indirect
10682 && ent2->got.offset != (bfd_vma) -1
10683 && elf_gp (ibfd2) == elf_gp (ibfd))
10685 ent2->is_indirect = TRUE;
10686 ent2->got.ent = ent;
10692 /* Zap sizes of got sections. */
10693 htab->reliplt->rawsize = htab->reliplt->size;
10694 htab->reliplt->size -= htab->got_reli_size;
10695 htab->got_reli_size = 0;
10697 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10699 asection *got, *relgot;
10701 if (!is_ppc64_elf (ibfd))
10704 got = ppc64_elf_tdata (ibfd)->got;
10707 got->rawsize = got->size;
10709 relgot = ppc64_elf_tdata (ibfd)->relgot;
10710 relgot->rawsize = relgot->size;
10715 /* Now reallocate the got, local syms first. We don't need to
10716 allocate section contents again since we never increase size. */
10717 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10719 struct got_entry **lgot_ents;
10720 struct got_entry **end_lgot_ents;
10721 struct plt_entry **local_plt;
10722 struct plt_entry **end_local_plt;
10723 unsigned char *lgot_masks;
10724 bfd_size_type locsymcount;
10725 Elf_Internal_Shdr *symtab_hdr;
10726 asection *s, *srel;
10728 if (!is_ppc64_elf (ibfd))
10731 lgot_ents = elf_local_got_ents (ibfd);
10735 symtab_hdr = &elf_symtab_hdr (ibfd);
10736 locsymcount = symtab_hdr->sh_info;
10737 end_lgot_ents = lgot_ents + locsymcount;
10738 local_plt = (struct plt_entry **) end_lgot_ents;
10739 end_local_plt = local_plt + locsymcount;
10740 lgot_masks = (unsigned char *) end_local_plt;
10741 s = ppc64_elf_tdata (ibfd)->got;
10742 srel = ppc64_elf_tdata (ibfd)->relgot;
10743 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10745 struct got_entry *ent;
10747 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10749 unsigned int num = 1;
10750 ent->got.offset = s->size;
10751 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10753 s->size += num * 8;
10755 srel->size += num * sizeof (Elf64_External_Rela);
10756 else if ((*lgot_masks & PLT_IFUNC) != 0)
10758 htab->reliplt->size
10759 += num * sizeof (Elf64_External_Rela);
10760 htab->got_reli_size
10761 += num * sizeof (Elf64_External_Rela);
10767 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10769 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10771 struct got_entry *ent;
10773 if (!is_ppc64_elf (ibfd))
10776 ent = ppc64_tlsld_got (ibfd);
10777 if (!ent->is_indirect
10778 && ent->got.offset != (bfd_vma) -1)
10780 asection *s = ppc64_elf_tdata (ibfd)->got;
10781 ent->got.offset = s->size;
10785 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10786 srel->size += sizeof (Elf64_External_Rela);
10791 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10792 if (!done_something)
10793 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10797 if (!is_ppc64_elf (ibfd))
10800 got = ppc64_elf_tdata (ibfd)->got;
10803 done_something = got->rawsize != got->size;
10804 if (done_something)
10809 if (done_something)
10810 (*htab->layout_sections_again) ();
10812 /* Set up for second pass over toc sections to recalculate elf_gp
10813 on input sections. */
10814 htab->toc_bfd = NULL;
10815 htab->toc_first_sec = NULL;
10816 htab->second_toc_pass = TRUE;
10817 return done_something;
10820 /* Called after second pass of multitoc partitioning. */
10823 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10825 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10827 /* After the second pass, toc_curr tracks the TOC offset used
10828 for code sections below in ppc64_elf_next_input_section. */
10829 htab->toc_curr = TOC_BASE_OFF;
10832 /* No toc references were found in ISEC. If the code in ISEC makes no
10833 calls, then there's no need to use toc adjusting stubs when branching
10834 into ISEC. Actually, indirect calls from ISEC are OK as they will
10835 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10836 needed, and 2 if a cyclical call-graph was found but no other reason
10837 for a stub was detected. If called from the top level, a return of
10838 2 means the same as a return of 0. */
10841 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10845 /* Mark this section as checked. */
10846 isec->call_check_done = 1;
10848 /* We know none of our code bearing sections will need toc stubs. */
10849 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10852 if (isec->size == 0)
10855 if (isec->output_section == NULL)
10859 if (isec->reloc_count != 0)
10861 Elf_Internal_Rela *relstart, *rel;
10862 Elf_Internal_Sym *local_syms;
10863 struct ppc_link_hash_table *htab;
10865 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10866 info->keep_memory);
10867 if (relstart == NULL)
10870 /* Look for branches to outside of this section. */
10872 htab = ppc_hash_table (info);
10876 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10878 enum elf_ppc64_reloc_type r_type;
10879 unsigned long r_symndx;
10880 struct elf_link_hash_entry *h;
10881 struct ppc_link_hash_entry *eh;
10882 Elf_Internal_Sym *sym;
10884 struct _opd_sec_data *opd;
10888 r_type = ELF64_R_TYPE (rel->r_info);
10889 if (r_type != R_PPC64_REL24
10890 && r_type != R_PPC64_REL14
10891 && r_type != R_PPC64_REL14_BRTAKEN
10892 && r_type != R_PPC64_REL14_BRNTAKEN)
10895 r_symndx = ELF64_R_SYM (rel->r_info);
10896 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10903 /* Calls to dynamic lib functions go through a plt call stub
10905 eh = (struct ppc_link_hash_entry *) h;
10907 && (eh->elf.plt.plist != NULL
10909 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10915 if (sym_sec == NULL)
10916 /* Ignore other undefined symbols. */
10919 /* Assume branches to other sections not included in the
10920 link need stubs too, to cover -R and absolute syms. */
10921 if (sym_sec->output_section == NULL)
10928 sym_value = sym->st_value;
10931 if (h->root.type != bfd_link_hash_defined
10932 && h->root.type != bfd_link_hash_defweak)
10934 sym_value = h->root.u.def.value;
10936 sym_value += rel->r_addend;
10938 /* If this branch reloc uses an opd sym, find the code section. */
10939 opd = get_opd_info (sym_sec);
10942 if (h == NULL && opd->adjust != NULL)
10946 adjust = opd->adjust[sym->st_value / 8];
10948 /* Assume deleted functions won't ever be called. */
10950 sym_value += adjust;
10953 dest = opd_entry_value (sym_sec, sym_value,
10954 &sym_sec, NULL, FALSE);
10955 if (dest == (bfd_vma) -1)
10960 + sym_sec->output_offset
10961 + sym_sec->output_section->vma);
10963 /* Ignore branch to self. */
10964 if (sym_sec == isec)
10967 /* If the called function uses the toc, we need a stub. */
10968 if (sym_sec->has_toc_reloc
10969 || sym_sec->makes_toc_func_call)
10975 /* Assume any branch that needs a long branch stub might in fact
10976 need a plt_branch stub. A plt_branch stub uses r2. */
10977 else if (dest - (isec->output_offset
10978 + isec->output_section->vma
10979 + rel->r_offset) + (1 << 25) >= (2 << 25))
10985 /* If calling back to a section in the process of being
10986 tested, we can't say for sure that no toc adjusting stubs
10987 are needed, so don't return zero. */
10988 else if (sym_sec->call_check_in_progress)
10991 /* Branches to another section that itself doesn't have any TOC
10992 references are OK. Recursively call ourselves to check. */
10993 else if (!sym_sec->call_check_done)
10997 /* Mark current section as indeterminate, so that other
10998 sections that call back to current won't be marked as
11000 isec->call_check_in_progress = 1;
11001 recur = toc_adjusting_stub_needed (info, sym_sec);
11002 isec->call_check_in_progress = 0;
11013 if (local_syms != NULL
11014 && (elf_symtab_hdr (isec->owner).contents
11015 != (unsigned char *) local_syms))
11017 if (elf_section_data (isec)->relocs != relstart)
11022 && isec->map_head.s != NULL
11023 && (strcmp (isec->output_section->name, ".init") == 0
11024 || strcmp (isec->output_section->name, ".fini") == 0))
11026 if (isec->map_head.s->has_toc_reloc
11027 || isec->map_head.s->makes_toc_func_call)
11029 else if (!isec->map_head.s->call_check_done)
11032 isec->call_check_in_progress = 1;
11033 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11034 isec->call_check_in_progress = 0;
11041 isec->makes_toc_func_call = 1;
11046 /* The linker repeatedly calls this function for each input section,
11047 in the order that input sections are linked into output sections.
11048 Build lists of input sections to determine groupings between which
11049 we may insert linker stubs. */
11052 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11054 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11059 if ((isec->output_section->flags & SEC_CODE) != 0
11060 && isec->output_section->index <= htab->top_index)
11062 asection **list = htab->input_list + isec->output_section->index;
11063 /* Steal the link_sec pointer for our list. */
11064 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11065 /* This happens to make the list in reverse order,
11066 which is what we want. */
11067 PREV_SEC (isec) = *list;
11071 if (htab->multi_toc_needed)
11073 /* If a code section has a function that uses the TOC then we need
11074 to use the right TOC (obviously). Also, make sure that .opd gets
11075 the correct TOC value for R_PPC64_TOC relocs that don't have or
11076 can't find their function symbol (shouldn't ever happen now).
11077 Also specially treat .fixup for the linux kernel. .fixup
11078 contains branches, but only back to the function that hit an
11080 if (isec->has_toc_reloc
11081 || (isec->flags & SEC_CODE) == 0
11082 || strcmp (isec->name, ".fixup") == 0)
11084 if (elf_gp (isec->owner) != 0)
11085 htab->toc_curr = elf_gp (isec->owner);
11089 if (!isec->call_check_done
11090 && toc_adjusting_stub_needed (info, isec) < 0)
11092 /* If we make a local call from this section, ie. a branch
11093 without a following nop, then we have no place to put a
11094 toc restoring insn. We must use the same toc group as
11096 Testing makes_toc_func_call actually tests for *any*
11097 calls to functions that need a good toc pointer. A more
11098 precise test would be better, as this one will set
11099 incorrect values for pasted .init/.fini fragments.
11100 (Fixed later in check_pasted_section.) */
11101 if (isec->makes_toc_func_call
11102 && elf_gp (isec->owner) != 0)
11103 htab->toc_curr = elf_gp (isec->owner);
11107 /* Functions that don't use the TOC can belong in any TOC group.
11108 Use the last TOC base. */
11109 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11113 /* Check that all .init and .fini sections use the same toc, if they
11114 have toc relocs. */
11117 check_pasted_section (struct bfd_link_info *info, const char *name)
11119 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11123 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11124 bfd_vma toc_off = 0;
11127 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11128 if (i->has_toc_reloc)
11131 toc_off = htab->stub_group[i->id].toc_off;
11132 else if (toc_off != htab->stub_group[i->id].toc_off)
11137 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11138 if (i->makes_toc_func_call)
11140 toc_off = htab->stub_group[i->id].toc_off;
11144 /* Make sure the whole pasted function uses the same toc offset. */
11146 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11147 htab->stub_group[i->id].toc_off = toc_off;
11153 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11155 return (check_pasted_section (info, ".init")
11156 & check_pasted_section (info, ".fini"));
11159 /* See whether we can group stub sections together. Grouping stub
11160 sections may result in fewer stubs. More importantly, we need to
11161 put all .init* and .fini* stubs at the beginning of the .init or
11162 .fini output sections respectively, because glibc splits the
11163 _init and _fini functions into multiple parts. Putting a stub in
11164 the middle of a function is not a good idea. */
11167 group_sections (struct ppc_link_hash_table *htab,
11168 bfd_size_type stub_group_size,
11169 bfd_boolean stubs_always_before_branch)
11172 bfd_size_type stub14_group_size;
11173 bfd_boolean suppress_size_errors;
11175 suppress_size_errors = FALSE;
11176 stub14_group_size = stub_group_size;
11177 if (stub_group_size == 1)
11179 /* Default values. */
11180 if (stubs_always_before_branch)
11182 stub_group_size = 0x1e00000;
11183 stub14_group_size = 0x7800;
11187 stub_group_size = 0x1c00000;
11188 stub14_group_size = 0x7000;
11190 suppress_size_errors = TRUE;
11193 list = htab->input_list + htab->top_index;
11196 asection *tail = *list;
11197 while (tail != NULL)
11201 bfd_size_type total;
11202 bfd_boolean big_sec;
11206 total = tail->size;
11207 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11208 && ppc64_elf_section_data (tail)->has_14bit_branch
11209 ? stub14_group_size : stub_group_size);
11210 if (big_sec && !suppress_size_errors)
11211 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11212 tail->owner, tail);
11213 curr_toc = htab->stub_group[tail->id].toc_off;
11215 while ((prev = PREV_SEC (curr)) != NULL
11216 && ((total += curr->output_offset - prev->output_offset)
11217 < (ppc64_elf_section_data (prev) != NULL
11218 && ppc64_elf_section_data (prev)->has_14bit_branch
11219 ? stub14_group_size : stub_group_size))
11220 && htab->stub_group[prev->id].toc_off == curr_toc)
11223 /* OK, the size from the start of CURR to the end is less
11224 than stub_group_size and thus can be handled by one stub
11225 section. (or the tail section is itself larger than
11226 stub_group_size, in which case we may be toast.) We
11227 should really be keeping track of the total size of stubs
11228 added here, as stubs contribute to the final output
11229 section size. That's a little tricky, and this way will
11230 only break if stubs added make the total size more than
11231 2^25, ie. for the default stub_group_size, if stubs total
11232 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11235 prev = PREV_SEC (tail);
11236 /* Set up this stub group. */
11237 htab->stub_group[tail->id].link_sec = curr;
11239 while (tail != curr && (tail = prev) != NULL);
11241 /* But wait, there's more! Input sections up to stub_group_size
11242 bytes before the stub section can be handled by it too.
11243 Don't do this if we have a really large section after the
11244 stubs, as adding more stubs increases the chance that
11245 branches may not reach into the stub section. */
11246 if (!stubs_always_before_branch && !big_sec)
11249 while (prev != NULL
11250 && ((total += tail->output_offset - prev->output_offset)
11251 < (ppc64_elf_section_data (prev) != NULL
11252 && ppc64_elf_section_data (prev)->has_14bit_branch
11253 ? stub14_group_size : stub_group_size))
11254 && htab->stub_group[prev->id].toc_off == curr_toc)
11257 prev = PREV_SEC (tail);
11258 htab->stub_group[tail->id].link_sec = curr;
11264 while (list-- != htab->input_list);
11265 free (htab->input_list);
11269 static const unsigned char glink_eh_frame_cie[] =
11271 0, 0, 0, 16, /* length. */
11272 0, 0, 0, 0, /* id. */
11273 1, /* CIE version. */
11274 'z', 'R', 0, /* Augmentation string. */
11275 4, /* Code alignment. */
11276 0x78, /* Data alignment. */
11278 1, /* Augmentation size. */
11279 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11280 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11283 /* Stripping output sections is normally done before dynamic section
11284 symbols have been allocated. This function is called later, and
11285 handles cases like htab->brlt which is mapped to its own output
11289 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11291 if (isec->size == 0
11292 && isec->output_section->size == 0
11293 && !bfd_section_removed_from_list (info->output_bfd,
11294 isec->output_section)
11295 && elf_section_data (isec->output_section)->dynindx == 0)
11297 isec->output_section->flags |= SEC_EXCLUDE;
11298 bfd_section_list_remove (info->output_bfd, isec->output_section);
11299 info->output_bfd->section_count--;
11303 /* Determine and set the size of the stub section for a final link.
11305 The basic idea here is to examine all the relocations looking for
11306 PC-relative calls to a target that is unreachable with a "bl"
11310 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11311 bfd_boolean plt_static_chain, int plt_thread_safe,
11312 int plt_stub_align)
11314 bfd_size_type stub_group_size;
11315 bfd_boolean stubs_always_before_branch;
11316 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11321 htab->plt_static_chain = plt_static_chain;
11322 htab->plt_stub_align = plt_stub_align;
11323 if (plt_thread_safe == -1)
11325 const char *const thread_starter[] =
11329 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11331 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11332 "mq_notify", "create_timer",
11336 "GOMP_parallel_start",
11337 "GOMP_parallel_loop_static_start",
11338 "GOMP_parallel_loop_dynamic_start",
11339 "GOMP_parallel_loop_guided_start",
11340 "GOMP_parallel_loop_runtime_start",
11341 "GOMP_parallel_sections_start",
11345 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11347 struct elf_link_hash_entry *h;
11348 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11349 FALSE, FALSE, TRUE);
11350 plt_thread_safe = h != NULL && h->ref_regular;
11351 if (plt_thread_safe)
11355 htab->plt_thread_safe = plt_thread_safe;
11356 stubs_always_before_branch = group_size < 0;
11357 if (group_size < 0)
11358 stub_group_size = -group_size;
11360 stub_group_size = group_size;
11362 group_sections (htab, stub_group_size, stubs_always_before_branch);
11367 unsigned int bfd_indx;
11368 asection *stub_sec;
11370 htab->stub_iteration += 1;
11372 for (input_bfd = info->input_bfds, bfd_indx = 0;
11374 input_bfd = input_bfd->link_next, bfd_indx++)
11376 Elf_Internal_Shdr *symtab_hdr;
11378 Elf_Internal_Sym *local_syms = NULL;
11380 if (!is_ppc64_elf (input_bfd))
11383 /* We'll need the symbol table in a second. */
11384 symtab_hdr = &elf_symtab_hdr (input_bfd);
11385 if (symtab_hdr->sh_info == 0)
11388 /* Walk over each section attached to the input bfd. */
11389 for (section = input_bfd->sections;
11391 section = section->next)
11393 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11395 /* If there aren't any relocs, then there's nothing more
11397 if ((section->flags & SEC_RELOC) == 0
11398 || (section->flags & SEC_ALLOC) == 0
11399 || (section->flags & SEC_LOAD) == 0
11400 || (section->flags & SEC_CODE) == 0
11401 || section->reloc_count == 0)
11404 /* If this section is a link-once section that will be
11405 discarded, then don't create any stubs. */
11406 if (section->output_section == NULL
11407 || section->output_section->owner != info->output_bfd)
11410 /* Get the relocs. */
11412 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11413 info->keep_memory);
11414 if (internal_relocs == NULL)
11415 goto error_ret_free_local;
11417 /* Now examine each relocation. */
11418 irela = internal_relocs;
11419 irelaend = irela + section->reloc_count;
11420 for (; irela < irelaend; irela++)
11422 enum elf_ppc64_reloc_type r_type;
11423 unsigned int r_indx;
11424 enum ppc_stub_type stub_type;
11425 struct ppc_stub_hash_entry *stub_entry;
11426 asection *sym_sec, *code_sec;
11427 bfd_vma sym_value, code_value;
11428 bfd_vma destination;
11429 bfd_boolean ok_dest;
11430 struct ppc_link_hash_entry *hash;
11431 struct ppc_link_hash_entry *fdh;
11432 struct elf_link_hash_entry *h;
11433 Elf_Internal_Sym *sym;
11435 const asection *id_sec;
11436 struct _opd_sec_data *opd;
11437 struct plt_entry *plt_ent;
11439 r_type = ELF64_R_TYPE (irela->r_info);
11440 r_indx = ELF64_R_SYM (irela->r_info);
11442 if (r_type >= R_PPC64_max)
11444 bfd_set_error (bfd_error_bad_value);
11445 goto error_ret_free_internal;
11448 /* Only look for stubs on branch instructions. */
11449 if (r_type != R_PPC64_REL24
11450 && r_type != R_PPC64_REL14
11451 && r_type != R_PPC64_REL14_BRTAKEN
11452 && r_type != R_PPC64_REL14_BRNTAKEN)
11455 /* Now determine the call target, its name, value,
11457 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11458 r_indx, input_bfd))
11459 goto error_ret_free_internal;
11460 hash = (struct ppc_link_hash_entry *) h;
11467 sym_value = sym->st_value;
11470 else if (hash->elf.root.type == bfd_link_hash_defined
11471 || hash->elf.root.type == bfd_link_hash_defweak)
11473 sym_value = hash->elf.root.u.def.value;
11474 if (sym_sec->output_section != NULL)
11477 else if (hash->elf.root.type == bfd_link_hash_undefweak
11478 || hash->elf.root.type == bfd_link_hash_undefined)
11480 /* Recognise an old ABI func code entry sym, and
11481 use the func descriptor sym instead if it is
11483 if (hash->elf.root.root.string[0] == '.'
11484 && (fdh = lookup_fdh (hash, htab)) != NULL)
11486 if (fdh->elf.root.type == bfd_link_hash_defined
11487 || fdh->elf.root.type == bfd_link_hash_defweak)
11489 sym_sec = fdh->elf.root.u.def.section;
11490 sym_value = fdh->elf.root.u.def.value;
11491 if (sym_sec->output_section != NULL)
11500 bfd_set_error (bfd_error_bad_value);
11501 goto error_ret_free_internal;
11507 sym_value += irela->r_addend;
11508 destination = (sym_value
11509 + sym_sec->output_offset
11510 + sym_sec->output_section->vma);
11513 code_sec = sym_sec;
11514 code_value = sym_value;
11515 opd = get_opd_info (sym_sec);
11520 if (hash == NULL && opd->adjust != NULL)
11522 long adjust = opd->adjust[sym_value / 8];
11525 code_value += adjust;
11526 sym_value += adjust;
11528 dest = opd_entry_value (sym_sec, sym_value,
11529 &code_sec, &code_value, FALSE);
11530 if (dest != (bfd_vma) -1)
11532 destination = dest;
11535 /* Fixup old ABI sym to point at code
11537 hash->elf.root.type = bfd_link_hash_defweak;
11538 hash->elf.root.u.def.section = code_sec;
11539 hash->elf.root.u.def.value = code_value;
11544 /* Determine what (if any) linker stub is needed. */
11546 stub_type = ppc_type_of_stub (section, irela, &hash,
11547 &plt_ent, destination);
11549 if (stub_type != ppc_stub_plt_call)
11551 /* Check whether we need a TOC adjusting stub.
11552 Since the linker pastes together pieces from
11553 different object files when creating the
11554 _init and _fini functions, it may be that a
11555 call to what looks like a local sym is in
11556 fact a call needing a TOC adjustment. */
11557 if (code_sec != NULL
11558 && code_sec->output_section != NULL
11559 && (htab->stub_group[code_sec->id].toc_off
11560 != htab->stub_group[section->id].toc_off)
11561 && (code_sec->has_toc_reloc
11562 || code_sec->makes_toc_func_call))
11563 stub_type = ppc_stub_long_branch_r2off;
11566 if (stub_type == ppc_stub_none)
11569 /* __tls_get_addr calls might be eliminated. */
11570 if (stub_type != ppc_stub_plt_call
11572 && (hash == htab->tls_get_addr
11573 || hash == htab->tls_get_addr_fd)
11574 && section->has_tls_reloc
11575 && irela != internal_relocs)
11577 /* Get tls info. */
11578 unsigned char *tls_mask;
11580 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11581 irela - 1, input_bfd))
11582 goto error_ret_free_internal;
11583 if (*tls_mask != 0)
11587 if (stub_type == ppc_stub_plt_call
11588 && irela + 1 < irelaend
11589 && irela[1].r_offset == irela->r_offset + 4
11590 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
11592 if (!tocsave_find (htab, INSERT,
11593 &local_syms, irela + 1, input_bfd))
11594 goto error_ret_free_internal;
11596 else if (stub_type == ppc_stub_plt_call)
11597 stub_type = ppc_stub_plt_call_r2save;
11599 /* Support for grouping stub sections. */
11600 id_sec = htab->stub_group[section->id].link_sec;
11602 /* Get the name of this stub. */
11603 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11605 goto error_ret_free_internal;
11607 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11608 stub_name, FALSE, FALSE);
11609 if (stub_entry != NULL)
11611 /* The proper stub has already been created. */
11613 if (stub_type == ppc_stub_plt_call_r2save)
11614 stub_entry->stub_type = stub_type;
11618 stub_entry = ppc_add_stub (stub_name, section, info);
11619 if (stub_entry == NULL)
11622 error_ret_free_internal:
11623 if (elf_section_data (section)->relocs == NULL)
11624 free (internal_relocs);
11625 error_ret_free_local:
11626 if (local_syms != NULL
11627 && (symtab_hdr->contents
11628 != (unsigned char *) local_syms))
11633 stub_entry->stub_type = stub_type;
11634 if (stub_type != ppc_stub_plt_call
11635 && stub_type != ppc_stub_plt_call_r2save)
11637 stub_entry->target_value = code_value;
11638 stub_entry->target_section = code_sec;
11642 stub_entry->target_value = sym_value;
11643 stub_entry->target_section = sym_sec;
11645 stub_entry->h = hash;
11646 stub_entry->plt_ent = plt_ent;
11647 stub_entry->addend = irela->r_addend;
11649 if (stub_entry->h != NULL)
11650 htab->stub_globals += 1;
11653 /* We're done with the internal relocs, free them. */
11654 if (elf_section_data (section)->relocs != internal_relocs)
11655 free (internal_relocs);
11658 if (local_syms != NULL
11659 && symtab_hdr->contents != (unsigned char *) local_syms)
11661 if (!info->keep_memory)
11664 symtab_hdr->contents = (unsigned char *) local_syms;
11668 /* We may have added some stubs. Find out the new size of the
11670 for (stub_sec = htab->stub_bfd->sections;
11672 stub_sec = stub_sec->next)
11673 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11675 stub_sec->rawsize = stub_sec->size;
11676 stub_sec->size = 0;
11677 stub_sec->reloc_count = 0;
11678 stub_sec->flags &= ~SEC_RELOC;
11681 htab->brlt->size = 0;
11682 htab->brlt->reloc_count = 0;
11683 htab->brlt->flags &= ~SEC_RELOC;
11684 if (htab->relbrlt != NULL)
11685 htab->relbrlt->size = 0;
11687 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11689 if (info->emitrelocations
11690 && htab->glink != NULL && htab->glink->size != 0)
11692 htab->glink->reloc_count = 1;
11693 htab->glink->flags |= SEC_RELOC;
11696 if (htab->glink_eh_frame != NULL
11697 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
11698 && htab->glink_eh_frame->output_section->size != 0)
11700 size_t size = 0, align;
11702 for (stub_sec = htab->stub_bfd->sections;
11704 stub_sec = stub_sec->next)
11705 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11707 if (htab->glink != NULL && htab->glink->size != 0)
11710 size += sizeof (glink_eh_frame_cie);
11712 align <<= htab->glink_eh_frame->output_section->alignment_power;
11714 size = (size + align) & ~align;
11715 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11716 htab->glink_eh_frame->size = size;
11719 if (htab->plt_stub_align != 0)
11720 for (stub_sec = htab->stub_bfd->sections;
11722 stub_sec = stub_sec->next)
11723 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11724 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
11725 & (-1 << htab->plt_stub_align));
11727 for (stub_sec = htab->stub_bfd->sections;
11729 stub_sec = stub_sec->next)
11730 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11731 && stub_sec->rawsize != stub_sec->size)
11734 /* Exit from this loop when no stubs have been added, and no stubs
11735 have changed size. */
11736 if (stub_sec == NULL
11737 && (htab->glink_eh_frame == NULL
11738 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
11741 /* Ask the linker to do its stuff. */
11742 (*htab->layout_sections_again) ();
11745 maybe_strip_output (info, htab->brlt);
11746 if (htab->glink_eh_frame != NULL)
11747 maybe_strip_output (info, htab->glink_eh_frame);
11752 /* Called after we have determined section placement. If sections
11753 move, we'll be called again. Provide a value for TOCstart. */
11756 ppc64_elf_toc (bfd *obfd)
11761 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11762 order. The TOC starts where the first of these sections starts. */
11763 s = bfd_get_section_by_name (obfd, ".got");
11764 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11765 s = bfd_get_section_by_name (obfd, ".toc");
11766 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11767 s = bfd_get_section_by_name (obfd, ".tocbss");
11768 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11769 s = bfd_get_section_by_name (obfd, ".plt");
11770 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11772 /* This may happen for
11773 o references to TOC base (SYM@toc / TOC[tc0]) without a
11775 o bad linker script
11776 o --gc-sections and empty TOC sections
11778 FIXME: Warn user? */
11780 /* Look for a likely section. We probably won't even be
11782 for (s = obfd->sections; s != NULL; s = s->next)
11783 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11785 == (SEC_ALLOC | SEC_SMALL_DATA))
11788 for (s = obfd->sections; s != NULL; s = s->next)
11789 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11790 == (SEC_ALLOC | SEC_SMALL_DATA))
11793 for (s = obfd->sections; s != NULL; s = s->next)
11794 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11798 for (s = obfd->sections; s != NULL; s = s->next)
11799 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11805 TOCstart = s->output_section->vma + s->output_offset;
11810 /* Build all the stubs associated with the current output file.
11811 The stubs are kept in a hash table attached to the main linker
11812 hash table. This function is called via gldelf64ppc_finish. */
11815 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11816 struct bfd_link_info *info,
11819 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11820 asection *stub_sec;
11822 int stub_sec_count = 0;
11827 htab->emit_stub_syms = emit_stub_syms;
11829 /* Allocate memory to hold the linker stubs. */
11830 for (stub_sec = htab->stub_bfd->sections;
11832 stub_sec = stub_sec->next)
11833 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11834 && stub_sec->size != 0)
11836 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11837 if (stub_sec->contents == NULL)
11839 /* We want to check that built size is the same as calculated
11840 size. rawsize is a convenient location to use. */
11841 stub_sec->rawsize = stub_sec->size;
11842 stub_sec->size = 0;
11845 if (htab->glink != NULL && htab->glink->size != 0)
11850 /* Build the .glink plt call stub. */
11851 if (htab->emit_stub_syms)
11853 struct elf_link_hash_entry *h;
11854 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11855 TRUE, FALSE, FALSE);
11858 if (h->root.type == bfd_link_hash_new)
11860 h->root.type = bfd_link_hash_defined;
11861 h->root.u.def.section = htab->glink;
11862 h->root.u.def.value = 8;
11863 h->ref_regular = 1;
11864 h->def_regular = 1;
11865 h->ref_regular_nonweak = 1;
11866 h->forced_local = 1;
11870 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11871 if (info->emitrelocations)
11873 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11876 r->r_offset = (htab->glink->output_offset
11877 + htab->glink->output_section->vma);
11878 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11879 r->r_addend = plt0;
11881 p = htab->glink->contents;
11882 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11883 bfd_put_64 (htab->glink->owner, plt0, p);
11885 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11887 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11889 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11891 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11893 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11895 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11897 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11899 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11901 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11903 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11905 bfd_put_32 (htab->glink->owner, BCTR, p);
11907 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11909 bfd_put_32 (htab->glink->owner, NOP, p);
11913 /* Build the .glink lazy link call stubs. */
11915 while (p < htab->glink->contents + htab->glink->size)
11919 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11924 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11926 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11929 bfd_put_32 (htab->glink->owner,
11930 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11934 htab->glink->rawsize = p - htab->glink->contents;
11937 if (htab->brlt->size != 0)
11939 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11941 if (htab->brlt->contents == NULL)
11944 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11946 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11947 htab->relbrlt->size);
11948 if (htab->relbrlt->contents == NULL)
11952 if (htab->glink_eh_frame != NULL
11953 && htab->glink_eh_frame->size != 0)
11956 bfd_byte *last_fde;
11957 size_t last_fde_len, size, align, pad;
11959 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
11962 htab->glink_eh_frame->contents = p;
11965 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11967 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
11968 /* CIE length (rewrite in case little-endian). */
11969 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
11970 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
11971 p += sizeof (glink_eh_frame_cie);
11973 for (stub_sec = htab->stub_bfd->sections;
11975 stub_sec = stub_sec->next)
11976 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11981 bfd_put_32 (htab->elf.dynobj, 16, p);
11984 val = p - htab->glink_eh_frame->contents;
11985 bfd_put_32 (htab->elf.dynobj, val, p);
11987 /* Offset to stub section. */
11988 val = (stub_sec->output_section->vma
11989 + stub_sec->output_offset);
11990 val -= (htab->glink_eh_frame->output_section->vma
11991 + htab->glink_eh_frame->output_offset);
11992 val -= p - htab->glink_eh_frame->contents;
11993 if (val + 0x80000000 > 0xffffffff)
11995 info->callbacks->einfo
11996 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12000 bfd_put_32 (htab->elf.dynobj, val, p);
12002 /* stub section size. */
12003 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12005 /* Augmentation. */
12010 if (htab->glink != NULL && htab->glink->size != 0)
12015 bfd_put_32 (htab->elf.dynobj, 20, p);
12018 val = p - htab->glink_eh_frame->contents;
12019 bfd_put_32 (htab->elf.dynobj, val, p);
12021 /* Offset to .glink. */
12022 val = (htab->glink->output_section->vma
12023 + htab->glink->output_offset
12025 val -= (htab->glink_eh_frame->output_section->vma
12026 + htab->glink_eh_frame->output_offset);
12027 val -= p - htab->glink_eh_frame->contents;
12028 if (val + 0x80000000 > 0xffffffff)
12030 info->callbacks->einfo
12031 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12032 htab->glink->name);
12035 bfd_put_32 (htab->elf.dynobj, val, p);
12038 bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
12040 /* Augmentation. */
12043 *p++ = DW_CFA_advance_loc + 1;
12044 *p++ = DW_CFA_register;
12047 *p++ = DW_CFA_advance_loc + 4;
12048 *p++ = DW_CFA_restore_extended;
12051 /* Subsume any padding into the last FDE if user .eh_frame
12052 sections are aligned more than glink_eh_frame. Otherwise any
12053 zero padding will be seen as a terminator. */
12054 size = p - htab->glink_eh_frame->contents;
12056 align <<= htab->glink_eh_frame->output_section->alignment_power;
12058 pad = ((size + align) & ~align) - size;
12059 htab->glink_eh_frame->size = size + pad;
12060 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12063 /* Build the stubs as directed by the stub hash table. */
12064 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12066 if (htab->relbrlt != NULL)
12067 htab->relbrlt->reloc_count = 0;
12069 if (htab->plt_stub_align != 0)
12070 for (stub_sec = htab->stub_bfd->sections;
12072 stub_sec = stub_sec->next)
12073 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12074 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12075 & (-1 << htab->plt_stub_align));
12077 for (stub_sec = htab->stub_bfd->sections;
12079 stub_sec = stub_sec->next)
12080 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12082 stub_sec_count += 1;
12083 if (stub_sec->rawsize != stub_sec->size)
12087 if (stub_sec != NULL
12088 || htab->glink->rawsize != htab->glink->size
12089 || (htab->glink_eh_frame != NULL
12090 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12092 htab->stub_error = TRUE;
12093 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12096 if (htab->stub_error)
12101 *stats = bfd_malloc (500);
12102 if (*stats == NULL)
12105 sprintf (*stats, _("linker stubs in %u group%s\n"
12107 " toc adjust %lu\n"
12108 " long branch %lu\n"
12109 " long toc adj %lu\n"
12111 " plt call toc %lu"),
12113 stub_sec_count == 1 ? "" : "s",
12114 htab->stub_count[ppc_stub_long_branch - 1],
12115 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12116 htab->stub_count[ppc_stub_plt_branch - 1],
12117 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12118 htab->stub_count[ppc_stub_plt_call - 1],
12119 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12124 /* This function undoes the changes made by add_symbol_adjust. */
12127 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12129 struct ppc_link_hash_entry *eh;
12131 if (h->root.type == bfd_link_hash_indirect)
12134 eh = (struct ppc_link_hash_entry *) h;
12135 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12138 eh->elf.root.type = bfd_link_hash_undefined;
12143 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12145 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12148 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12151 /* What to do when ld finds relocations against symbols defined in
12152 discarded sections. */
12154 static unsigned int
12155 ppc64_elf_action_discarded (asection *sec)
12157 if (strcmp (".opd", sec->name) == 0)
12160 if (strcmp (".toc", sec->name) == 0)
12163 if (strcmp (".toc1", sec->name) == 0)
12166 return _bfd_elf_default_action_discarded (sec);
12169 /* The RELOCATE_SECTION function is called by the ELF backend linker
12170 to handle the relocations for a section.
12172 The relocs are always passed as Rela structures; if the section
12173 actually uses Rel structures, the r_addend field will always be
12176 This function is responsible for adjust the section contents as
12177 necessary, and (if using Rela relocs and generating a
12178 relocatable output file) adjusting the reloc addend as
12181 This function does not have to worry about setting the reloc
12182 address or the reloc symbol index.
12184 LOCAL_SYMS is a pointer to the swapped in local symbols.
12186 LOCAL_SECTIONS is an array giving the section in the input file
12187 corresponding to the st_shndx field of each local symbol.
12189 The global hash table entry for the global symbols can be found
12190 via elf_sym_hashes (input_bfd).
12192 When generating relocatable output, this function must handle
12193 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12194 going to be the section symbol corresponding to the output
12195 section, which means that the addend must be adjusted
12199 ppc64_elf_relocate_section (bfd *output_bfd,
12200 struct bfd_link_info *info,
12202 asection *input_section,
12203 bfd_byte *contents,
12204 Elf_Internal_Rela *relocs,
12205 Elf_Internal_Sym *local_syms,
12206 asection **local_sections)
12208 struct ppc_link_hash_table *htab;
12209 Elf_Internal_Shdr *symtab_hdr;
12210 struct elf_link_hash_entry **sym_hashes;
12211 Elf_Internal_Rela *rel;
12212 Elf_Internal_Rela *relend;
12213 Elf_Internal_Rela outrel;
12215 struct got_entry **local_got_ents;
12217 bfd_boolean ret = TRUE;
12218 bfd_boolean is_opd;
12219 /* Assume 'at' branch hints. */
12220 bfd_boolean is_isa_v2 = TRUE;
12221 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12223 /* Initialize howto table if needed. */
12224 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12227 htab = ppc_hash_table (info);
12231 /* Don't relocate stub sections. */
12232 if (input_section->owner == htab->stub_bfd)
12235 BFD_ASSERT (is_ppc64_elf (input_bfd));
12237 local_got_ents = elf_local_got_ents (input_bfd);
12238 TOCstart = elf_gp (output_bfd);
12239 symtab_hdr = &elf_symtab_hdr (input_bfd);
12240 sym_hashes = elf_sym_hashes (input_bfd);
12241 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12244 relend = relocs + input_section->reloc_count;
12245 for (; rel < relend; rel++)
12247 enum elf_ppc64_reloc_type r_type;
12248 bfd_vma addend, orig_addend;
12249 bfd_reloc_status_type r;
12250 Elf_Internal_Sym *sym;
12252 struct elf_link_hash_entry *h_elf;
12253 struct ppc_link_hash_entry *h;
12254 struct ppc_link_hash_entry *fdh;
12255 const char *sym_name;
12256 unsigned long r_symndx, toc_symndx;
12257 bfd_vma toc_addend;
12258 unsigned char tls_mask, tls_gd, tls_type;
12259 unsigned char sym_type;
12260 bfd_vma relocation;
12261 bfd_boolean unresolved_reloc;
12262 bfd_boolean warned;
12265 struct ppc_stub_hash_entry *stub_entry;
12266 bfd_vma max_br_offset;
12269 r_type = ELF64_R_TYPE (rel->r_info);
12270 r_symndx = ELF64_R_SYM (rel->r_info);
12272 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12273 symbol of the previous ADDR64 reloc. The symbol gives us the
12274 proper TOC base to use. */
12275 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12277 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12279 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12285 unresolved_reloc = FALSE;
12287 orig_addend = rel->r_addend;
12289 if (r_symndx < symtab_hdr->sh_info)
12291 /* It's a local symbol. */
12292 struct _opd_sec_data *opd;
12294 sym = local_syms + r_symndx;
12295 sec = local_sections[r_symndx];
12296 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12297 sym_type = ELF64_ST_TYPE (sym->st_info);
12298 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12299 opd = get_opd_info (sec);
12300 if (opd != NULL && opd->adjust != NULL)
12302 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12307 /* If this is a relocation against the opd section sym
12308 and we have edited .opd, adjust the reloc addend so
12309 that ld -r and ld --emit-relocs output is correct.
12310 If it is a reloc against some other .opd symbol,
12311 then the symbol value will be adjusted later. */
12312 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12313 rel->r_addend += adjust;
12315 relocation += adjust;
12321 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12322 r_symndx, symtab_hdr, sym_hashes,
12323 h_elf, sec, relocation,
12324 unresolved_reloc, warned);
12325 sym_name = h_elf->root.root.string;
12326 sym_type = h_elf->type;
12328 h = (struct ppc_link_hash_entry *) h_elf;
12330 if (sec != NULL && discarded_section (sec))
12331 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
12333 ppc64_elf_howto_table[r_type], 0,
12336 if (info->relocatable)
12339 /* TLS optimizations. Replace instruction sequences and relocs
12340 based on information we collected in tls_optimize. We edit
12341 RELOCS so that --emit-relocs will output something sensible
12342 for the final instruction stream. */
12347 tls_mask = h->tls_mask;
12348 else if (local_got_ents != NULL)
12350 struct plt_entry **local_plt = (struct plt_entry **)
12351 (local_got_ents + symtab_hdr->sh_info);
12352 unsigned char *lgot_masks = (unsigned char *)
12353 (local_plt + symtab_hdr->sh_info);
12354 tls_mask = lgot_masks[r_symndx];
12357 && (r_type == R_PPC64_TLS
12358 || r_type == R_PPC64_TLSGD
12359 || r_type == R_PPC64_TLSLD))
12361 /* Check for toc tls entries. */
12362 unsigned char *toc_tls;
12364 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12365 &local_syms, rel, input_bfd))
12369 tls_mask = *toc_tls;
12372 /* Check that tls relocs are used with tls syms, and non-tls
12373 relocs are used with non-tls syms. */
12374 if (r_symndx != STN_UNDEF
12375 && r_type != R_PPC64_NONE
12377 || h->elf.root.type == bfd_link_hash_defined
12378 || h->elf.root.type == bfd_link_hash_defweak)
12379 && (IS_PPC64_TLS_RELOC (r_type)
12380 != (sym_type == STT_TLS
12381 || (sym_type == STT_SECTION
12382 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
12385 && (r_type == R_PPC64_TLS
12386 || r_type == R_PPC64_TLSGD
12387 || r_type == R_PPC64_TLSLD))
12388 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12391 info->callbacks->einfo
12392 (!IS_PPC64_TLS_RELOC (r_type)
12393 ? _("%P: %H: %s used with TLS symbol %s\n")
12394 : _("%P: %H: %s used with non-TLS symbol %s\n"),
12395 input_bfd, input_section, rel->r_offset,
12396 ppc64_elf_howto_table[r_type]->name,
12400 /* Ensure reloc mapping code below stays sane. */
12401 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
12402 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
12403 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
12404 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
12405 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
12406 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
12407 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
12408 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
12409 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
12410 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
12418 case R_PPC64_LO_DS_OPT:
12419 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12420 if ((insn & (0x3f << 26)) != 58u << 26)
12422 insn += (14u << 26) - (58u << 26);
12423 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12424 r_type = R_PPC64_TOC16_LO;
12425 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12428 case R_PPC64_TOC16:
12429 case R_PPC64_TOC16_LO:
12430 case R_PPC64_TOC16_DS:
12431 case R_PPC64_TOC16_LO_DS:
12433 /* Check for toc tls entries. */
12434 unsigned char *toc_tls;
12437 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12438 &local_syms, rel, input_bfd);
12444 tls_mask = *toc_tls;
12445 if (r_type == R_PPC64_TOC16_DS
12446 || r_type == R_PPC64_TOC16_LO_DS)
12449 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
12454 /* If we found a GD reloc pair, then we might be
12455 doing a GD->IE transition. */
12458 tls_gd = TLS_TPRELGD;
12459 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12462 else if (retval == 3)
12464 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12472 case R_PPC64_GOT_TPREL16_HI:
12473 case R_PPC64_GOT_TPREL16_HA:
12475 && (tls_mask & TLS_TPREL) == 0)
12477 rel->r_offset -= d_offset;
12478 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12479 r_type = R_PPC64_NONE;
12480 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12484 case R_PPC64_GOT_TPREL16_DS:
12485 case R_PPC64_GOT_TPREL16_LO_DS:
12487 && (tls_mask & TLS_TPREL) == 0)
12490 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12492 insn |= 0x3c0d0000; /* addis 0,13,0 */
12493 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12494 r_type = R_PPC64_TPREL16_HA;
12495 if (toc_symndx != 0)
12497 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12498 rel->r_addend = toc_addend;
12499 /* We changed the symbol. Start over in order to
12500 get h, sym, sec etc. right. */
12505 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12511 && (tls_mask & TLS_TPREL) == 0)
12513 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
12514 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
12517 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12518 /* Was PPC64_TLS which sits on insn boundary, now
12519 PPC64_TPREL16_LO which is at low-order half-word. */
12520 rel->r_offset += d_offset;
12521 r_type = R_PPC64_TPREL16_LO;
12522 if (toc_symndx != 0)
12524 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12525 rel->r_addend = toc_addend;
12526 /* We changed the symbol. Start over in order to
12527 get h, sym, sec etc. right. */
12532 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12536 case R_PPC64_GOT_TLSGD16_HI:
12537 case R_PPC64_GOT_TLSGD16_HA:
12538 tls_gd = TLS_TPRELGD;
12539 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12543 case R_PPC64_GOT_TLSLD16_HI:
12544 case R_PPC64_GOT_TLSLD16_HA:
12545 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12548 if ((tls_mask & tls_gd) != 0)
12549 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12550 + R_PPC64_GOT_TPREL16_DS);
12553 rel->r_offset -= d_offset;
12554 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12555 r_type = R_PPC64_NONE;
12557 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12561 case R_PPC64_GOT_TLSGD16:
12562 case R_PPC64_GOT_TLSGD16_LO:
12563 tls_gd = TLS_TPRELGD;
12564 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12568 case R_PPC64_GOT_TLSLD16:
12569 case R_PPC64_GOT_TLSLD16_LO:
12570 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12572 unsigned int insn1, insn2, insn3;
12576 offset = (bfd_vma) -1;
12577 /* If not using the newer R_PPC64_TLSGD/LD to mark
12578 __tls_get_addr calls, we must trust that the call
12579 stays with its arg setup insns, ie. that the next
12580 reloc is the __tls_get_addr call associated with
12581 the current reloc. Edit both insns. */
12582 if (input_section->has_tls_get_addr_call
12583 && rel + 1 < relend
12584 && branch_reloc_hash_match (input_bfd, rel + 1,
12585 htab->tls_get_addr,
12586 htab->tls_get_addr_fd))
12587 offset = rel[1].r_offset;
12588 if ((tls_mask & tls_gd) != 0)
12591 insn1 = bfd_get_32 (output_bfd,
12592 contents + rel->r_offset - d_offset);
12593 insn1 &= (1 << 26) - (1 << 2);
12594 insn1 |= 58 << 26; /* ld */
12595 insn2 = 0x7c636a14; /* add 3,3,13 */
12596 if (offset != (bfd_vma) -1)
12597 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12598 if ((tls_mask & TLS_EXPLICIT) == 0)
12599 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12600 + R_PPC64_GOT_TPREL16_DS);
12602 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12603 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12608 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12609 insn2 = 0x38630000; /* addi 3,3,0 */
12612 /* Was an LD reloc. */
12614 sec = local_sections[toc_symndx];
12616 r_symndx < symtab_hdr->sh_info;
12618 if (local_sections[r_symndx] == sec)
12620 if (r_symndx >= symtab_hdr->sh_info)
12621 r_symndx = STN_UNDEF;
12622 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12623 if (r_symndx != STN_UNDEF)
12624 rel->r_addend -= (local_syms[r_symndx].st_value
12625 + sec->output_offset
12626 + sec->output_section->vma);
12628 else if (toc_symndx != 0)
12630 r_symndx = toc_symndx;
12631 rel->r_addend = toc_addend;
12633 r_type = R_PPC64_TPREL16_HA;
12634 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12635 if (offset != (bfd_vma) -1)
12637 rel[1].r_info = ELF64_R_INFO (r_symndx,
12638 R_PPC64_TPREL16_LO);
12639 rel[1].r_offset = offset + d_offset;
12640 rel[1].r_addend = rel->r_addend;
12643 bfd_put_32 (output_bfd, insn1,
12644 contents + rel->r_offset - d_offset);
12645 if (offset != (bfd_vma) -1)
12647 insn3 = bfd_get_32 (output_bfd,
12648 contents + offset + 4);
12650 || insn3 == CROR_151515 || insn3 == CROR_313131)
12652 rel[1].r_offset += 4;
12653 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12656 bfd_put_32 (output_bfd, insn2, contents + offset);
12658 if ((tls_mask & tls_gd) == 0
12659 && (tls_gd == 0 || toc_symndx != 0))
12661 /* We changed the symbol. Start over in order
12662 to get h, sym, sec etc. right. */
12669 case R_PPC64_TLSGD:
12670 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12672 unsigned int insn2, insn3;
12673 bfd_vma offset = rel->r_offset;
12675 if ((tls_mask & TLS_TPRELGD) != 0)
12678 r_type = R_PPC64_NONE;
12679 insn2 = 0x7c636a14; /* add 3,3,13 */
12684 if (toc_symndx != 0)
12686 r_symndx = toc_symndx;
12687 rel->r_addend = toc_addend;
12689 r_type = R_PPC64_TPREL16_LO;
12690 rel->r_offset = offset + d_offset;
12691 insn2 = 0x38630000; /* addi 3,3,0 */
12693 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12694 /* Zap the reloc on the _tls_get_addr call too. */
12695 BFD_ASSERT (offset == rel[1].r_offset);
12696 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12697 insn3 = bfd_get_32 (output_bfd,
12698 contents + offset + 4);
12700 || insn3 == CROR_151515 || insn3 == CROR_313131)
12702 rel->r_offset += 4;
12703 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12706 bfd_put_32 (output_bfd, insn2, contents + offset);
12707 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12715 case R_PPC64_TLSLD:
12716 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12718 unsigned int insn2, insn3;
12719 bfd_vma offset = rel->r_offset;
12722 sec = local_sections[toc_symndx];
12724 r_symndx < symtab_hdr->sh_info;
12726 if (local_sections[r_symndx] == sec)
12728 if (r_symndx >= symtab_hdr->sh_info)
12729 r_symndx = STN_UNDEF;
12730 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12731 if (r_symndx != STN_UNDEF)
12732 rel->r_addend -= (local_syms[r_symndx].st_value
12733 + sec->output_offset
12734 + sec->output_section->vma);
12736 r_type = R_PPC64_TPREL16_LO;
12737 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12738 rel->r_offset = offset + d_offset;
12739 /* Zap the reloc on the _tls_get_addr call too. */
12740 BFD_ASSERT (offset == rel[1].r_offset);
12741 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12742 insn2 = 0x38630000; /* addi 3,3,0 */
12743 insn3 = bfd_get_32 (output_bfd,
12744 contents + offset + 4);
12746 || insn3 == CROR_151515 || insn3 == CROR_313131)
12748 rel->r_offset += 4;
12749 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12752 bfd_put_32 (output_bfd, insn2, contents + offset);
12758 case R_PPC64_DTPMOD64:
12759 if (rel + 1 < relend
12760 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12761 && rel[1].r_offset == rel->r_offset + 8)
12763 if ((tls_mask & TLS_GD) == 0)
12765 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12766 if ((tls_mask & TLS_TPRELGD) != 0)
12767 r_type = R_PPC64_TPREL64;
12770 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12771 r_type = R_PPC64_NONE;
12773 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12778 if ((tls_mask & TLS_LD) == 0)
12780 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12781 r_type = R_PPC64_NONE;
12782 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12787 case R_PPC64_TPREL64:
12788 if ((tls_mask & TLS_TPREL) == 0)
12790 r_type = R_PPC64_NONE;
12791 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12796 /* Handle other relocations that tweak non-addend part of insn. */
12798 max_br_offset = 1 << 25;
12799 addend = rel->r_addend;
12805 case R_PPC64_TOCSAVE:
12806 if (relocation + addend == (rel->r_offset
12807 + input_section->output_offset
12808 + input_section->output_section->vma)
12809 && tocsave_find (htab, NO_INSERT,
12810 &local_syms, rel, input_bfd))
12812 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
12814 || insn == CROR_151515 || insn == CROR_313131)
12815 bfd_put_32 (input_bfd, STD_R2_40R1,
12816 contents + rel->r_offset);
12820 /* Branch taken prediction relocations. */
12821 case R_PPC64_ADDR14_BRTAKEN:
12822 case R_PPC64_REL14_BRTAKEN:
12823 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12826 /* Branch not taken prediction relocations. */
12827 case R_PPC64_ADDR14_BRNTAKEN:
12828 case R_PPC64_REL14_BRNTAKEN:
12829 insn |= bfd_get_32 (output_bfd,
12830 contents + rel->r_offset) & ~(0x01 << 21);
12833 case R_PPC64_REL14:
12834 max_br_offset = 1 << 15;
12837 case R_PPC64_REL24:
12838 /* Calls to functions with a different TOC, such as calls to
12839 shared objects, need to alter the TOC pointer. This is
12840 done using a linkage stub. A REL24 branching to these
12841 linkage stubs needs to be followed by a nop, as the nop
12842 will be replaced with an instruction to restore the TOC
12847 && h->oh->is_func_descriptor)
12848 fdh = ppc_follow_link (h->oh);
12849 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12850 if (stub_entry != NULL
12851 && (stub_entry->stub_type == ppc_stub_plt_call
12852 || stub_entry->stub_type == ppc_stub_plt_call_r2save
12853 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12854 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
12856 bfd_boolean can_plt_call = FALSE;
12858 if (rel->r_offset + 8 <= input_section->size)
12861 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12863 || nop == CROR_151515 || nop == CROR_313131)
12866 && (h == htab->tls_get_addr_fd
12867 || h == htab->tls_get_addr)
12868 && !htab->no_tls_get_addr_opt)
12870 /* Special stub used, leave nop alone. */
12873 bfd_put_32 (input_bfd, LD_R2_40R1,
12874 contents + rel->r_offset + 4);
12875 can_plt_call = TRUE;
12881 if (stub_entry->stub_type == ppc_stub_plt_call
12882 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12884 /* If this is a plain branch rather than a branch
12885 and link, don't require a nop. However, don't
12886 allow tail calls in a shared library as they
12887 will result in r2 being corrupted. */
12889 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
12890 if (info->executable && (br & 1) == 0)
12891 can_plt_call = TRUE;
12896 && strcmp (h->elf.root.root.string,
12897 ".__libc_start_main") == 0)
12899 /* Allow crt1 branch to go via a toc adjusting stub. */
12900 can_plt_call = TRUE;
12904 if (strcmp (input_section->output_section->name,
12906 || strcmp (input_section->output_section->name,
12908 info->callbacks->einfo
12909 (_("%P: %H: automatic multiple TOCs "
12910 "not supported using your crt files; "
12911 "recompile with -mminimal-toc or upgrade gcc\n"),
12912 input_bfd, input_section, rel->r_offset);
12914 info->callbacks->einfo
12915 (_("%P: %H: sibling call optimization to `%s' "
12916 "does not allow automatic multiple TOCs; "
12917 "recompile with -mminimal-toc or "
12918 "-fno-optimize-sibling-calls, "
12919 "or make `%s' extern\n"),
12920 input_bfd, input_section, rel->r_offset,
12923 bfd_set_error (bfd_error_bad_value);
12929 && (stub_entry->stub_type == ppc_stub_plt_call
12930 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
12931 unresolved_reloc = FALSE;
12934 if ((stub_entry == NULL
12935 || stub_entry->stub_type == ppc_stub_long_branch
12936 || stub_entry->stub_type == ppc_stub_plt_branch)
12937 && get_opd_info (sec) != NULL)
12939 /* The branch destination is the value of the opd entry. */
12940 bfd_vma off = (relocation + addend
12941 - sec->output_section->vma
12942 - sec->output_offset);
12943 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
12944 if (dest != (bfd_vma) -1)
12951 /* If the branch is out of reach we ought to have a long
12953 from = (rel->r_offset
12954 + input_section->output_offset
12955 + input_section->output_section->vma);
12957 if (stub_entry != NULL
12958 && (stub_entry->stub_type == ppc_stub_long_branch
12959 || stub_entry->stub_type == ppc_stub_plt_branch)
12960 && (r_type == R_PPC64_ADDR14_BRTAKEN
12961 || r_type == R_PPC64_ADDR14_BRNTAKEN
12962 || (relocation + addend - from + max_br_offset
12963 < 2 * max_br_offset)))
12964 /* Don't use the stub if this branch is in range. */
12967 if (stub_entry != NULL)
12969 /* Munge up the value and addend so that we call the stub
12970 rather than the procedure directly. */
12971 relocation = (stub_entry->stub_offset
12972 + stub_entry->stub_sec->output_offset
12973 + stub_entry->stub_sec->output_section->vma);
12976 if ((stub_entry->stub_type == ppc_stub_plt_call
12977 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12978 && (ALWAYS_EMIT_R2SAVE
12979 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12980 && rel + 1 < relend
12981 && rel[1].r_offset == rel->r_offset + 4
12982 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
12990 /* Set 'a' bit. This is 0b00010 in BO field for branch
12991 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12992 for branch on CTR insns (BO == 1a00t or 1a01t). */
12993 if ((insn & (0x14 << 21)) == (0x04 << 21))
12994 insn |= 0x02 << 21;
12995 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12996 insn |= 0x08 << 21;
13002 /* Invert 'y' bit if not the default. */
13003 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13004 insn ^= 0x01 << 21;
13007 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13010 /* NOP out calls to undefined weak functions.
13011 We can thus call a weak function without first
13012 checking whether the function is defined. */
13014 && h->elf.root.type == bfd_link_hash_undefweak
13015 && h->elf.dynindx == -1
13016 && r_type == R_PPC64_REL24
13020 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13026 /* Set `addend'. */
13031 info->callbacks->einfo
13032 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
13033 input_bfd, (int) r_type, sym_name);
13035 bfd_set_error (bfd_error_bad_value);
13041 case R_PPC64_TLSGD:
13042 case R_PPC64_TLSLD:
13043 case R_PPC64_TOCSAVE:
13044 case R_PPC64_GNU_VTINHERIT:
13045 case R_PPC64_GNU_VTENTRY:
13048 /* GOT16 relocations. Like an ADDR16 using the symbol's
13049 address in the GOT as relocation value instead of the
13050 symbol's value itself. Also, create a GOT entry for the
13051 symbol and put the symbol value there. */
13052 case R_PPC64_GOT_TLSGD16:
13053 case R_PPC64_GOT_TLSGD16_LO:
13054 case R_PPC64_GOT_TLSGD16_HI:
13055 case R_PPC64_GOT_TLSGD16_HA:
13056 tls_type = TLS_TLS | TLS_GD;
13059 case R_PPC64_GOT_TLSLD16:
13060 case R_PPC64_GOT_TLSLD16_LO:
13061 case R_PPC64_GOT_TLSLD16_HI:
13062 case R_PPC64_GOT_TLSLD16_HA:
13063 tls_type = TLS_TLS | TLS_LD;
13066 case R_PPC64_GOT_TPREL16_DS:
13067 case R_PPC64_GOT_TPREL16_LO_DS:
13068 case R_PPC64_GOT_TPREL16_HI:
13069 case R_PPC64_GOT_TPREL16_HA:
13070 tls_type = TLS_TLS | TLS_TPREL;
13073 case R_PPC64_GOT_DTPREL16_DS:
13074 case R_PPC64_GOT_DTPREL16_LO_DS:
13075 case R_PPC64_GOT_DTPREL16_HI:
13076 case R_PPC64_GOT_DTPREL16_HA:
13077 tls_type = TLS_TLS | TLS_DTPREL;
13080 case R_PPC64_GOT16:
13081 case R_PPC64_GOT16_LO:
13082 case R_PPC64_GOT16_HI:
13083 case R_PPC64_GOT16_HA:
13084 case R_PPC64_GOT16_DS:
13085 case R_PPC64_GOT16_LO_DS:
13088 /* Relocation is to the entry for this symbol in the global
13093 unsigned long indx = 0;
13094 struct got_entry *ent;
13096 if (tls_type == (TLS_TLS | TLS_LD)
13098 || !h->elf.def_dynamic))
13099 ent = ppc64_tlsld_got (input_bfd);
13105 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13106 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13109 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13110 /* This is actually a static link, or it is a
13111 -Bsymbolic link and the symbol is defined
13112 locally, or the symbol was forced to be local
13113 because of a version file. */
13117 indx = h->elf.dynindx;
13118 unresolved_reloc = FALSE;
13120 ent = h->elf.got.glist;
13124 if (local_got_ents == NULL)
13126 ent = local_got_ents[r_symndx];
13129 for (; ent != NULL; ent = ent->next)
13130 if (ent->addend == orig_addend
13131 && ent->owner == input_bfd
13132 && ent->tls_type == tls_type)
13138 if (ent->is_indirect)
13139 ent = ent->got.ent;
13140 offp = &ent->got.offset;
13141 got = ppc64_elf_tdata (ent->owner)->got;
13145 /* The offset must always be a multiple of 8. We use the
13146 least significant bit to record whether we have already
13147 processed this entry. */
13149 if ((off & 1) != 0)
13153 /* Generate relocs for the dynamic linker, except in
13154 the case of TLSLD where we'll use one entry per
13162 ? h->elf.type == STT_GNU_IFUNC
13163 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13164 if ((info->shared || indx != 0)
13166 || (tls_type == (TLS_TLS | TLS_LD)
13167 && !h->elf.def_dynamic)
13168 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13169 || h->elf.root.type != bfd_link_hash_undefweak))
13170 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13172 relgot = htab->reliplt;
13173 if (relgot != NULL)
13175 outrel.r_offset = (got->output_section->vma
13176 + got->output_offset
13178 outrel.r_addend = addend;
13179 if (tls_type & (TLS_LD | TLS_GD))
13181 outrel.r_addend = 0;
13182 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13183 if (tls_type == (TLS_TLS | TLS_GD))
13185 loc = relgot->contents;
13186 loc += (relgot->reloc_count++
13187 * sizeof (Elf64_External_Rela));
13188 bfd_elf64_swap_reloca_out (output_bfd,
13190 outrel.r_offset += 8;
13191 outrel.r_addend = addend;
13193 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13196 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13197 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13198 else if (tls_type == (TLS_TLS | TLS_TPREL))
13199 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13200 else if (indx != 0)
13201 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13205 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13207 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13209 /* Write the .got section contents for the sake
13211 loc = got->contents + off;
13212 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13216 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13218 outrel.r_addend += relocation;
13219 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13220 outrel.r_addend -= htab->elf.tls_sec->vma;
13222 loc = relgot->contents;
13223 loc += (relgot->reloc_count++
13224 * sizeof (Elf64_External_Rela));
13225 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13228 /* Init the .got section contents here if we're not
13229 emitting a reloc. */
13232 relocation += addend;
13233 if (tls_type == (TLS_TLS | TLS_LD))
13235 else if (tls_type != 0)
13237 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13238 if (tls_type == (TLS_TLS | TLS_TPREL))
13239 relocation += DTP_OFFSET - TP_OFFSET;
13241 if (tls_type == (TLS_TLS | TLS_GD))
13243 bfd_put_64 (output_bfd, relocation,
13244 got->contents + off + 8);
13249 bfd_put_64 (output_bfd, relocation,
13250 got->contents + off);
13254 if (off >= (bfd_vma) -2)
13257 relocation = got->output_section->vma + got->output_offset + off;
13258 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
13262 case R_PPC64_PLT16_HA:
13263 case R_PPC64_PLT16_HI:
13264 case R_PPC64_PLT16_LO:
13265 case R_PPC64_PLT32:
13266 case R_PPC64_PLT64:
13267 /* Relocation is to the entry for this symbol in the
13268 procedure linkage table. */
13270 /* Resolve a PLT reloc against a local symbol directly,
13271 without using the procedure linkage table. */
13275 /* It's possible that we didn't make a PLT entry for this
13276 symbol. This happens when statically linking PIC code,
13277 or when using -Bsymbolic. Go find a match if there is a
13279 if (htab->plt != NULL)
13281 struct plt_entry *ent;
13282 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
13283 if (ent->addend == orig_addend
13284 && ent->plt.offset != (bfd_vma) -1)
13286 relocation = (htab->plt->output_section->vma
13287 + htab->plt->output_offset
13288 + ent->plt.offset);
13289 unresolved_reloc = FALSE;
13295 /* Relocation value is TOC base. */
13296 relocation = TOCstart;
13297 if (r_symndx == STN_UNDEF)
13298 relocation += htab->stub_group[input_section->id].toc_off;
13299 else if (unresolved_reloc)
13301 else if (sec != NULL && sec->id <= htab->top_id)
13302 relocation += htab->stub_group[sec->id].toc_off;
13304 unresolved_reloc = TRUE;
13307 /* TOC16 relocs. We want the offset relative to the TOC base,
13308 which is the address of the start of the TOC plus 0x8000.
13309 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13311 case R_PPC64_TOC16:
13312 case R_PPC64_TOC16_LO:
13313 case R_PPC64_TOC16_HI:
13314 case R_PPC64_TOC16_DS:
13315 case R_PPC64_TOC16_LO_DS:
13316 case R_PPC64_TOC16_HA:
13317 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
13320 /* Relocate against the beginning of the section. */
13321 case R_PPC64_SECTOFF:
13322 case R_PPC64_SECTOFF_LO:
13323 case R_PPC64_SECTOFF_HI:
13324 case R_PPC64_SECTOFF_DS:
13325 case R_PPC64_SECTOFF_LO_DS:
13326 case R_PPC64_SECTOFF_HA:
13328 addend -= sec->output_section->vma;
13331 case R_PPC64_REL16:
13332 case R_PPC64_REL16_LO:
13333 case R_PPC64_REL16_HI:
13334 case R_PPC64_REL16_HA:
13337 case R_PPC64_REL14:
13338 case R_PPC64_REL14_BRNTAKEN:
13339 case R_PPC64_REL14_BRTAKEN:
13340 case R_PPC64_REL24:
13343 case R_PPC64_TPREL16:
13344 case R_PPC64_TPREL16_LO:
13345 case R_PPC64_TPREL16_HI:
13346 case R_PPC64_TPREL16_HA:
13347 case R_PPC64_TPREL16_DS:
13348 case R_PPC64_TPREL16_LO_DS:
13349 case R_PPC64_TPREL16_HIGHER:
13350 case R_PPC64_TPREL16_HIGHERA:
13351 case R_PPC64_TPREL16_HIGHEST:
13352 case R_PPC64_TPREL16_HIGHESTA:
13354 && h->elf.root.type == bfd_link_hash_undefweak
13355 && h->elf.dynindx == -1)
13357 /* Make this relocation against an undefined weak symbol
13358 resolve to zero. This is really just a tweak, since
13359 code using weak externs ought to check that they are
13360 defined before using them. */
13361 bfd_byte *p = contents + rel->r_offset - d_offset;
13363 insn = bfd_get_32 (output_bfd, p);
13364 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
13366 bfd_put_32 (output_bfd, insn, p);
13369 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13371 /* The TPREL16 relocs shouldn't really be used in shared
13372 libs as they will result in DT_TEXTREL being set, but
13373 support them anyway. */
13377 case R_PPC64_DTPREL16:
13378 case R_PPC64_DTPREL16_LO:
13379 case R_PPC64_DTPREL16_HI:
13380 case R_PPC64_DTPREL16_HA:
13381 case R_PPC64_DTPREL16_DS:
13382 case R_PPC64_DTPREL16_LO_DS:
13383 case R_PPC64_DTPREL16_HIGHER:
13384 case R_PPC64_DTPREL16_HIGHERA:
13385 case R_PPC64_DTPREL16_HIGHEST:
13386 case R_PPC64_DTPREL16_HIGHESTA:
13387 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13390 case R_PPC64_DTPMOD64:
13395 case R_PPC64_TPREL64:
13396 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13399 case R_PPC64_DTPREL64:
13400 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13403 /* Relocations that may need to be propagated if this is a
13405 case R_PPC64_REL30:
13406 case R_PPC64_REL32:
13407 case R_PPC64_REL64:
13408 case R_PPC64_ADDR14:
13409 case R_PPC64_ADDR14_BRNTAKEN:
13410 case R_PPC64_ADDR14_BRTAKEN:
13411 case R_PPC64_ADDR16:
13412 case R_PPC64_ADDR16_DS:
13413 case R_PPC64_ADDR16_HA:
13414 case R_PPC64_ADDR16_HI:
13415 case R_PPC64_ADDR16_HIGHER:
13416 case R_PPC64_ADDR16_HIGHERA:
13417 case R_PPC64_ADDR16_HIGHEST:
13418 case R_PPC64_ADDR16_HIGHESTA:
13419 case R_PPC64_ADDR16_LO:
13420 case R_PPC64_ADDR16_LO_DS:
13421 case R_PPC64_ADDR24:
13422 case R_PPC64_ADDR32:
13423 case R_PPC64_ADDR64:
13424 case R_PPC64_UADDR16:
13425 case R_PPC64_UADDR32:
13426 case R_PPC64_UADDR64:
13428 if ((input_section->flags & SEC_ALLOC) == 0)
13431 if (NO_OPD_RELOCS && is_opd)
13436 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13437 || h->elf.root.type != bfd_link_hash_undefweak)
13438 && (must_be_dyn_reloc (info, r_type)
13439 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
13440 || (ELIMINATE_COPY_RELOCS
13443 && h->elf.dynindx != -1
13444 && !h->elf.non_got_ref
13445 && !h->elf.def_regular)
13448 ? h->elf.type == STT_GNU_IFUNC
13449 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
13451 bfd_boolean skip, relocate;
13455 /* When generating a dynamic object, these relocations
13456 are copied into the output file to be resolved at run
13462 out_off = _bfd_elf_section_offset (output_bfd, info,
13463 input_section, rel->r_offset);
13464 if (out_off == (bfd_vma) -1)
13466 else if (out_off == (bfd_vma) -2)
13467 skip = TRUE, relocate = TRUE;
13468 out_off += (input_section->output_section->vma
13469 + input_section->output_offset);
13470 outrel.r_offset = out_off;
13471 outrel.r_addend = rel->r_addend;
13473 /* Optimize unaligned reloc use. */
13474 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
13475 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
13476 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
13477 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
13478 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
13479 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
13480 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
13481 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
13482 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
13485 memset (&outrel, 0, sizeof outrel);
13486 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
13488 && r_type != R_PPC64_TOC)
13489 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
13492 /* This symbol is local, or marked to become local,
13493 or this is an opd section reloc which must point
13494 at a local function. */
13495 outrel.r_addend += relocation;
13496 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
13498 if (is_opd && h != NULL)
13500 /* Lie about opd entries. This case occurs
13501 when building shared libraries and we
13502 reference a function in another shared
13503 lib. The same thing happens for a weak
13504 definition in an application that's
13505 overridden by a strong definition in a
13506 shared lib. (I believe this is a generic
13507 bug in binutils handling of weak syms.)
13508 In these cases we won't use the opd
13509 entry in this lib. */
13510 unresolved_reloc = FALSE;
13513 && r_type == R_PPC64_ADDR64
13515 ? h->elf.type == STT_GNU_IFUNC
13516 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
13517 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13520 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13522 /* We need to relocate .opd contents for ld.so.
13523 Prelink also wants simple and consistent rules
13524 for relocs. This make all RELATIVE relocs have
13525 *r_offset equal to r_addend. */
13534 ? h->elf.type == STT_GNU_IFUNC
13535 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13537 info->callbacks->einfo
13538 (_("%P: %H: relocation %s for indirect "
13539 "function %s unsupported\n"),
13540 input_bfd, input_section, rel->r_offset,
13541 ppc64_elf_howto_table[r_type]->name,
13545 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
13547 else if (sec == NULL || sec->owner == NULL)
13549 bfd_set_error (bfd_error_bad_value);
13556 osec = sec->output_section;
13557 indx = elf_section_data (osec)->dynindx;
13561 if ((osec->flags & SEC_READONLY) == 0
13562 && htab->elf.data_index_section != NULL)
13563 osec = htab->elf.data_index_section;
13565 osec = htab->elf.text_index_section;
13566 indx = elf_section_data (osec)->dynindx;
13568 BFD_ASSERT (indx != 0);
13570 /* We are turning this relocation into one
13571 against a section symbol, so subtract out
13572 the output section's address but not the
13573 offset of the input section in the output
13575 outrel.r_addend -= osec->vma;
13578 outrel.r_info = ELF64_R_INFO (indx, r_type);
13582 sreloc = elf_section_data (input_section)->sreloc;
13583 if (!htab->elf.dynamic_sections_created)
13584 sreloc = htab->reliplt;
13585 if (sreloc == NULL)
13588 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13591 loc = sreloc->contents;
13592 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13593 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13595 /* If this reloc is against an external symbol, it will
13596 be computed at runtime, so there's no need to do
13597 anything now. However, for the sake of prelink ensure
13598 that the section contents are a known value. */
13601 unresolved_reloc = FALSE;
13602 /* The value chosen here is quite arbitrary as ld.so
13603 ignores section contents except for the special
13604 case of .opd where the contents might be accessed
13605 before relocation. Choose zero, as that won't
13606 cause reloc overflow. */
13609 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13610 to improve backward compatibility with older
13612 if (r_type == R_PPC64_ADDR64)
13613 addend = outrel.r_addend;
13614 /* Adjust pc_relative relocs to have zero in *r_offset. */
13615 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13616 addend = (input_section->output_section->vma
13617 + input_section->output_offset
13624 case R_PPC64_GLOB_DAT:
13625 case R_PPC64_JMP_SLOT:
13626 case R_PPC64_JMP_IREL:
13627 case R_PPC64_RELATIVE:
13628 /* We shouldn't ever see these dynamic relocs in relocatable
13630 /* Fall through. */
13632 case R_PPC64_PLTGOT16:
13633 case R_PPC64_PLTGOT16_DS:
13634 case R_PPC64_PLTGOT16_HA:
13635 case R_PPC64_PLTGOT16_HI:
13636 case R_PPC64_PLTGOT16_LO:
13637 case R_PPC64_PLTGOT16_LO_DS:
13638 case R_PPC64_PLTREL32:
13639 case R_PPC64_PLTREL64:
13640 /* These ones haven't been implemented yet. */
13642 info->callbacks->einfo
13643 (_("%P: %B: relocation %s is not supported for symbol %s\n"),
13645 ppc64_elf_howto_table[r_type]->name, sym_name);
13647 bfd_set_error (bfd_error_invalid_operation);
13652 /* Multi-instruction sequences that access the TOC can be
13653 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13654 to nop; addi rb,r2,x; */
13660 case R_PPC64_GOT_TLSLD16_HI:
13661 case R_PPC64_GOT_TLSGD16_HI:
13662 case R_PPC64_GOT_TPREL16_HI:
13663 case R_PPC64_GOT_DTPREL16_HI:
13664 case R_PPC64_GOT16_HI:
13665 case R_PPC64_TOC16_HI:
13666 /* These relocs would only be useful if building up an
13667 offset to later add to r2, perhaps in an indexed
13668 addressing mode instruction. Don't try to optimize.
13669 Unfortunately, the possibility of someone building up an
13670 offset like this or even with the HA relocs, means that
13671 we need to check the high insn when optimizing the low
13675 case R_PPC64_GOT_TLSLD16_HA:
13676 case R_PPC64_GOT_TLSGD16_HA:
13677 case R_PPC64_GOT_TPREL16_HA:
13678 case R_PPC64_GOT_DTPREL16_HA:
13679 case R_PPC64_GOT16_HA:
13680 case R_PPC64_TOC16_HA:
13681 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13682 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13684 bfd_byte *p = contents + (rel->r_offset & ~3);
13685 bfd_put_32 (input_bfd, NOP, p);
13689 case R_PPC64_GOT_TLSLD16_LO:
13690 case R_PPC64_GOT_TLSGD16_LO:
13691 case R_PPC64_GOT_TPREL16_LO_DS:
13692 case R_PPC64_GOT_DTPREL16_LO_DS:
13693 case R_PPC64_GOT16_LO:
13694 case R_PPC64_GOT16_LO_DS:
13695 case R_PPC64_TOC16_LO:
13696 case R_PPC64_TOC16_LO_DS:
13697 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13698 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13700 bfd_byte *p = contents + (rel->r_offset & ~3);
13701 insn = bfd_get_32 (input_bfd, p);
13702 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
13704 /* Transform addic to addi when we change reg. */
13705 insn &= ~((0x3f << 26) | (0x1f << 16));
13706 insn |= (14u << 26) | (2 << 16);
13710 insn &= ~(0x1f << 16);
13713 bfd_put_32 (input_bfd, insn, p);
13718 /* Do any further special processing. */
13724 case R_PPC64_ADDR16_HA:
13725 case R_PPC64_REL16_HA:
13726 case R_PPC64_ADDR16_HIGHERA:
13727 case R_PPC64_ADDR16_HIGHESTA:
13728 case R_PPC64_TOC16_HA:
13729 case R_PPC64_SECTOFF_HA:
13730 case R_PPC64_TPREL16_HA:
13731 case R_PPC64_DTPREL16_HA:
13732 case R_PPC64_TPREL16_HIGHER:
13733 case R_PPC64_TPREL16_HIGHERA:
13734 case R_PPC64_TPREL16_HIGHEST:
13735 case R_PPC64_TPREL16_HIGHESTA:
13736 case R_PPC64_DTPREL16_HIGHER:
13737 case R_PPC64_DTPREL16_HIGHERA:
13738 case R_PPC64_DTPREL16_HIGHEST:
13739 case R_PPC64_DTPREL16_HIGHESTA:
13740 /* It's just possible that this symbol is a weak symbol
13741 that's not actually defined anywhere. In that case,
13742 'sec' would be NULL, and we should leave the symbol
13743 alone (it will be set to zero elsewhere in the link). */
13748 case R_PPC64_GOT16_HA:
13749 case R_PPC64_PLTGOT16_HA:
13750 case R_PPC64_PLT16_HA:
13751 case R_PPC64_GOT_TLSGD16_HA:
13752 case R_PPC64_GOT_TLSLD16_HA:
13753 case R_PPC64_GOT_TPREL16_HA:
13754 case R_PPC64_GOT_DTPREL16_HA:
13755 /* Add 0x10000 if sign bit in 0:15 is set.
13756 Bits 0:15 are not used. */
13760 case R_PPC64_ADDR16_DS:
13761 case R_PPC64_ADDR16_LO_DS:
13762 case R_PPC64_GOT16_DS:
13763 case R_PPC64_GOT16_LO_DS:
13764 case R_PPC64_PLT16_LO_DS:
13765 case R_PPC64_SECTOFF_DS:
13766 case R_PPC64_SECTOFF_LO_DS:
13767 case R_PPC64_TOC16_DS:
13768 case R_PPC64_TOC16_LO_DS:
13769 case R_PPC64_PLTGOT16_DS:
13770 case R_PPC64_PLTGOT16_LO_DS:
13771 case R_PPC64_GOT_TPREL16_DS:
13772 case R_PPC64_GOT_TPREL16_LO_DS:
13773 case R_PPC64_GOT_DTPREL16_DS:
13774 case R_PPC64_GOT_DTPREL16_LO_DS:
13775 case R_PPC64_TPREL16_DS:
13776 case R_PPC64_TPREL16_LO_DS:
13777 case R_PPC64_DTPREL16_DS:
13778 case R_PPC64_DTPREL16_LO_DS:
13779 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13781 /* If this reloc is against an lq insn, then the value must be
13782 a multiple of 16. This is somewhat of a hack, but the
13783 "correct" way to do this by defining _DQ forms of all the
13784 _DS relocs bloats all reloc switches in this file. It
13785 doesn't seem to make much sense to use any of these relocs
13786 in data, so testing the insn should be safe. */
13787 if ((insn & (0x3f << 26)) == (56u << 26))
13789 if (((relocation + addend) & mask) != 0)
13791 info->callbacks->einfo
13792 (_("%P: %H: error: %s not a multiple of %u\n"),
13793 input_bfd, input_section, rel->r_offset,
13794 ppc64_elf_howto_table[r_type]->name,
13796 bfd_set_error (bfd_error_bad_value);
13803 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13804 because such sections are not SEC_ALLOC and thus ld.so will
13805 not process them. */
13806 if (unresolved_reloc
13807 && !((input_section->flags & SEC_DEBUGGING) != 0
13808 && h->elf.def_dynamic)
13809 && _bfd_elf_section_offset (output_bfd, info, input_section,
13810 rel->r_offset) != (bfd_vma) -1)
13812 info->callbacks->einfo
13813 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
13814 input_bfd, input_section, rel->r_offset,
13815 ppc64_elf_howto_table[(int) r_type]->name,
13816 h->elf.root.root.string);
13820 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
13828 if (r != bfd_reloc_ok)
13830 if (sym_name == NULL)
13831 sym_name = "(null)";
13832 if (r == bfd_reloc_overflow)
13837 && h->elf.root.type == bfd_link_hash_undefweak
13838 && ppc64_elf_howto_table[r_type]->pc_relative)
13840 /* Assume this is a call protected by other code that
13841 detects the symbol is undefined. If this is the case,
13842 we can safely ignore the overflow. If not, the
13843 program is hosed anyway, and a little warning isn't
13849 if (!((*info->callbacks->reloc_overflow)
13850 (info, (h ? &h->elf.root : NULL), sym_name,
13851 ppc64_elf_howto_table[r_type]->name,
13852 orig_addend, input_bfd, input_section, rel->r_offset)))
13857 info->callbacks->einfo
13858 (_("%P: %H: %s reloc against `%s': error %d\n"),
13859 input_bfd, input_section, rel->r_offset,
13860 ppc64_elf_howto_table[r_type]->name,
13868 /* If we're emitting relocations, then shortly after this function
13869 returns, reloc offsets and addends for this section will be
13870 adjusted. Worse, reloc symbol indices will be for the output
13871 file rather than the input. Save a copy of the relocs for
13872 opd_entry_value. */
13873 if (is_opd && (info->emitrelocations || info->relocatable))
13876 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13877 rel = bfd_alloc (input_bfd, amt);
13878 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13879 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13882 memcpy (rel, relocs, amt);
13887 /* Adjust the value of any local symbols in opd sections. */
13890 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13891 const char *name ATTRIBUTE_UNUSED,
13892 Elf_Internal_Sym *elfsym,
13893 asection *input_sec,
13894 struct elf_link_hash_entry *h)
13896 struct _opd_sec_data *opd;
13903 opd = get_opd_info (input_sec);
13904 if (opd == NULL || opd->adjust == NULL)
13907 value = elfsym->st_value - input_sec->output_offset;
13908 if (!info->relocatable)
13909 value -= input_sec->output_section->vma;
13911 adjust = opd->adjust[value / 8];
13915 elfsym->st_value += adjust;
13919 /* Finish up dynamic symbol handling. We set the contents of various
13920 dynamic sections here. */
13923 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13924 struct bfd_link_info *info,
13925 struct elf_link_hash_entry *h,
13926 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
13928 struct ppc_link_hash_table *htab;
13929 struct plt_entry *ent;
13930 Elf_Internal_Rela rela;
13933 htab = ppc_hash_table (info);
13937 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13938 if (ent->plt.offset != (bfd_vma) -1)
13940 /* This symbol has an entry in the procedure linkage
13941 table. Set it up. */
13942 if (!htab->elf.dynamic_sections_created
13943 || h->dynindx == -1)
13945 BFD_ASSERT (h->type == STT_GNU_IFUNC
13947 && (h->root.type == bfd_link_hash_defined
13948 || h->root.type == bfd_link_hash_defweak));
13949 rela.r_offset = (htab->iplt->output_section->vma
13950 + htab->iplt->output_offset
13951 + ent->plt.offset);
13952 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13953 rela.r_addend = (h->root.u.def.value
13954 + h->root.u.def.section->output_offset
13955 + h->root.u.def.section->output_section->vma
13957 loc = (htab->reliplt->contents
13958 + (htab->reliplt->reloc_count++
13959 * sizeof (Elf64_External_Rela)));
13963 rela.r_offset = (htab->plt->output_section->vma
13964 + htab->plt->output_offset
13965 + ent->plt.offset);
13966 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13967 rela.r_addend = ent->addend;
13968 loc = (htab->relplt->contents
13969 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13970 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
13972 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13977 /* This symbol needs a copy reloc. Set it up. */
13979 if (h->dynindx == -1
13980 || (h->root.type != bfd_link_hash_defined
13981 && h->root.type != bfd_link_hash_defweak)
13982 || htab->relbss == NULL)
13985 rela.r_offset = (h->root.u.def.value
13986 + h->root.u.def.section->output_section->vma
13987 + h->root.u.def.section->output_offset);
13988 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13990 loc = htab->relbss->contents;
13991 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
13992 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13998 /* Used to decide how to sort relocs in an optimal manner for the
13999 dynamic linker, before writing them out. */
14001 static enum elf_reloc_type_class
14002 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
14004 enum elf_ppc64_reloc_type r_type;
14006 r_type = ELF64_R_TYPE (rela->r_info);
14009 case R_PPC64_RELATIVE:
14010 return reloc_class_relative;
14011 case R_PPC64_JMP_SLOT:
14012 return reloc_class_plt;
14014 return reloc_class_copy;
14016 return reloc_class_normal;
14020 /* Finish up the dynamic sections. */
14023 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14024 struct bfd_link_info *info)
14026 struct ppc_link_hash_table *htab;
14030 htab = ppc_hash_table (info);
14034 dynobj = htab->elf.dynobj;
14035 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
14037 if (htab->elf.dynamic_sections_created)
14039 Elf64_External_Dyn *dyncon, *dynconend;
14041 if (sdyn == NULL || htab->got == NULL)
14044 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14045 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14046 for (; dyncon < dynconend; dyncon++)
14048 Elf_Internal_Dyn dyn;
14051 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14058 case DT_PPC64_GLINK:
14060 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14061 /* We stupidly defined DT_PPC64_GLINK to be the start
14062 of glink rather than the first entry point, which is
14063 what ld.so needs, and now have a bigger stub to
14064 support automatic multiple TOCs. */
14065 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
14069 s = bfd_get_section_by_name (output_bfd, ".opd");
14072 dyn.d_un.d_ptr = s->vma;
14075 case DT_PPC64_OPDSZ:
14076 s = bfd_get_section_by_name (output_bfd, ".opd");
14079 dyn.d_un.d_val = s->size;
14084 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14089 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14093 dyn.d_un.d_val = htab->relplt->size;
14097 /* Don't count procedure linkage table relocs in the
14098 overall reloc count. */
14102 dyn.d_un.d_val -= s->size;
14106 /* We may not be using the standard ELF linker script.
14107 If .rela.plt is the first .rela section, we adjust
14108 DT_RELA to not include it. */
14112 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14114 dyn.d_un.d_ptr += s->size;
14118 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14122 if (htab->got != NULL && htab->got->size != 0)
14124 /* Fill in the first entry in the global offset table.
14125 We use it to hold the link-time TOCbase. */
14126 bfd_put_64 (output_bfd,
14127 elf_gp (output_bfd) + TOC_BASE_OFF,
14128 htab->got->contents);
14130 /* Set .got entry size. */
14131 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
14134 if (htab->plt != NULL && htab->plt->size != 0)
14136 /* Set .plt entry size. */
14137 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
14141 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14142 brlt ourselves if emitrelocations. */
14143 if (htab->brlt != NULL
14144 && htab->brlt->reloc_count != 0
14145 && !_bfd_elf_link_output_relocs (output_bfd,
14147 elf_section_data (htab->brlt)->rela.hdr,
14148 elf_section_data (htab->brlt)->relocs,
14152 if (htab->glink != NULL
14153 && htab->glink->reloc_count != 0
14154 && !_bfd_elf_link_output_relocs (output_bfd,
14156 elf_section_data (htab->glink)->rela.hdr,
14157 elf_section_data (htab->glink)->relocs,
14162 if (htab->glink_eh_frame != NULL
14163 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
14164 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14165 htab->glink_eh_frame,
14166 htab->glink_eh_frame->contents))
14169 /* We need to handle writing out multiple GOT sections ourselves,
14170 since we didn't add them to DYNOBJ. We know dynobj is the first
14172 while ((dynobj = dynobj->link_next) != NULL)
14176 if (!is_ppc64_elf (dynobj))
14179 s = ppc64_elf_tdata (dynobj)->got;
14182 && s->output_section != bfd_abs_section_ptr
14183 && !bfd_set_section_contents (output_bfd, s->output_section,
14184 s->contents, s->output_offset,
14187 s = ppc64_elf_tdata (dynobj)->relgot;
14190 && s->output_section != bfd_abs_section_ptr
14191 && !bfd_set_section_contents (output_bfd, s->output_section,
14192 s->contents, s->output_offset,
14200 #include "elf64-target.h"
14202 /* FreeBSD support */
14204 #undef TARGET_LITTLE_SYM
14205 #undef TARGET_LITTLE_NAME
14207 #undef TARGET_BIG_SYM
14208 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14209 #undef TARGET_BIG_NAME
14210 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14213 #define ELF_OSABI ELFOSABI_FREEBSD
14216 #define elf64_bed elf64_powerpc_fbsd_bed
14218 #include "elf64-target.h"