1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 static bfd_vma opd_entry_value
58 (asection *, bfd_vma, asection **, bfd_vma *);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_post_process_headers _bfd_elf_set_osabi
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE 24
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
131 /* TOC base pointers offset from start of TOC. */
132 #define TOC_BASE_OFF 0x8000
134 /* Offset of tp and dtp pointers from start of TLS block. */
135 #define TP_OFFSET 0x7000
136 #define DTP_OFFSET 0x8000
138 /* .plt call stub instructions. The normal stub is like this, but
139 sometimes the .plt entry crosses a 64k boundary and we need to
140 insert an addi to adjust r12. */
141 #define PLT_CALL_STUB_SIZE (7*4)
142 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
143 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
144 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
145 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
146 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
147 /* ld %r11,xxx+16@l(%r12) */
148 #define BCTR 0x4e800420 /* bctr */
151 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
152 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
153 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
154 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
156 #define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
157 #define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
158 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
159 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
160 #define BNECTR 0x4ca20420 /* bnectr+ */
161 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
163 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
164 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
166 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
168 /* glink call stub instructions. We enter with the index in R0. */
169 #define GLINK_CALL_STUB_SIZE (16*4)
173 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
174 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
176 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
177 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
178 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
187 #define NOP 0x60000000
189 /* Some other nops. */
190 #define CROR_151515 0x4def7b82
191 #define CROR_313131 0x4ffffb82
193 /* .glink entries for the first 32k functions are two instructions. */
194 #define LI_R0_0 0x38000000 /* li %r0,0 */
195 #define B_DOT 0x48000000 /* b . */
197 /* After that, we need two instructions to load the index, followed by
199 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
200 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
202 /* Instructions used by the save and restore reg functions. */
203 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
204 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
205 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
206 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
207 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
208 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
209 #define LI_R12_0 0x39800000 /* li %r12,0 */
210 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
211 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
212 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
213 #define BLR 0x4e800020 /* blr */
215 /* Since .opd is an array of descriptors and each entry will end up
216 with identical R_PPC64_RELATIVE relocs, there is really no need to
217 propagate .opd relocs; The dynamic linker should be taught to
218 relocate .opd without reloc entries. */
219 #ifndef NO_OPD_RELOCS
220 #define NO_OPD_RELOCS 0
223 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
225 /* Relocation HOWTO's. */
226 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
228 static reloc_howto_type ppc64_elf_howto_raw[] = {
229 /* This reloc does nothing. */
230 HOWTO (R_PPC64_NONE, /* type */
232 2, /* size (0 = byte, 1 = short, 2 = long) */
234 FALSE, /* pc_relative */
236 complain_overflow_dont, /* complain_on_overflow */
237 bfd_elf_generic_reloc, /* special_function */
238 "R_PPC64_NONE", /* name */
239 FALSE, /* partial_inplace */
242 FALSE), /* pcrel_offset */
244 /* A standard 32 bit relocation. */
245 HOWTO (R_PPC64_ADDR32, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_bitfield, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_PPC64_ADDR32", /* name */
254 FALSE, /* partial_inplace */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
259 /* An absolute 26 bit branch; the lower two bits must be zero.
260 FIXME: we don't check that, we just clear them. */
261 HOWTO (R_PPC64_ADDR24, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR24", /* name */
270 FALSE, /* partial_inplace */
272 0x03fffffc, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* A standard 16 bit relocation. */
276 HOWTO (R_PPC64_ADDR16, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_PPC64_ADDR16", /* name */
285 FALSE, /* partial_inplace */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* A 16 bit relocation without overflow. */
291 HOWTO (R_PPC64_ADDR16_LO, /* type */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE, /* pc_relative */
297 complain_overflow_dont,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_PPC64_ADDR16_LO", /* name */
300 FALSE, /* partial_inplace */
302 0xffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
305 /* Bits 16-31 of an address. */
306 HOWTO (R_PPC64_ADDR16_HI, /* type */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC64_ADDR16_HI", /* name */
315 FALSE, /* partial_inplace */
317 0xffff, /* dst_mask */
318 FALSE), /* pcrel_offset */
320 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
321 bits, treated as a signed number, is negative. */
322 HOWTO (R_PPC64_ADDR16_HA, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_dont, /* complain_on_overflow */
329 ppc64_elf_ha_reloc, /* special_function */
330 "R_PPC64_ADDR16_HA", /* name */
331 FALSE, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* An absolute 16 bit branch; the lower two bits must be zero.
337 FIXME: we don't check that, we just clear them. */
338 HOWTO (R_PPC64_ADDR14, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 ppc64_elf_branch_reloc, /* special_function */
346 "R_PPC64_ADDR14", /* name */
347 FALSE, /* partial_inplace */
349 0x0000fffc, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* An absolute 16 bit branch, for which bit 10 should be set to
353 indicate that the branch is expected to be taken. The lower two
354 bits must be zero. */
355 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 ppc64_elf_brtaken_reloc, /* special_function */
363 "R_PPC64_ADDR14_BRTAKEN",/* name */
364 FALSE, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is not expected to be taken. The lower
371 two bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE, /* pc_relative */
378 complain_overflow_bitfield, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc, /* special_function */
380 "R_PPC64_ADDR14_BRNTAKEN",/* name */
381 FALSE, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE), /* pcrel_offset */
386 /* A relative 26 bit branch; the lower two bits must be zero. */
387 HOWTO (R_PPC64_REL24, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 ppc64_elf_branch_reloc, /* special_function */
395 "R_PPC64_REL24", /* name */
396 FALSE, /* partial_inplace */
398 0x03fffffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
401 /* A relative 16 bit branch; the lower two bits must be zero. */
402 HOWTO (R_PPC64_REL14, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 TRUE, /* pc_relative */
408 complain_overflow_signed, /* complain_on_overflow */
409 ppc64_elf_branch_reloc, /* special_function */
410 "R_PPC64_REL14", /* name */
411 FALSE, /* partial_inplace */
413 0x0000fffc, /* dst_mask */
414 TRUE), /* pcrel_offset */
416 /* A relative 16 bit branch. Bit 10 should be set to indicate that
417 the branch is expected to be taken. The lower two bits must be
419 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 ppc64_elf_brtaken_reloc, /* special_function */
427 "R_PPC64_REL14_BRTAKEN", /* name */
428 FALSE, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is not expected to be taken. The lower two bits must
436 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_signed, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc, /* special_function */
444 "R_PPC64_REL14_BRNTAKEN",/* name */
445 FALSE, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
452 HOWTO (R_PPC64_GOT16, /* type */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE, /* pc_relative */
458 complain_overflow_signed, /* complain_on_overflow */
459 ppc64_elf_unhandled_reloc, /* special_function */
460 "R_PPC64_GOT16", /* name */
461 FALSE, /* partial_inplace */
463 0xffff, /* dst_mask */
464 FALSE), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
468 HOWTO (R_PPC64_GOT16_LO, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc, /* special_function */
476 "R_PPC64_GOT16_LO", /* name */
477 FALSE, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_HI, /* type */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_dont,/* complain_on_overflow */
491 ppc64_elf_unhandled_reloc, /* special_function */
492 "R_PPC64_GOT16_HI", /* name */
493 FALSE, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HA, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_dont,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc, /* special_function */
508 "R_PPC64_GOT16_HA", /* name */
509 FALSE, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* This is used only by the dynamic linker. The symbol should exist
515 both in the object being run and in some shared library. The
516 dynamic linker copies the data addressed by the symbol from the
517 shared library into the object, because the object being
518 run has to have the data at some particular address. */
519 HOWTO (R_PPC64_COPY, /* type */
521 0, /* this one is variable size */
523 FALSE, /* pc_relative */
525 complain_overflow_dont, /* complain_on_overflow */
526 ppc64_elf_unhandled_reloc, /* special_function */
527 "R_PPC64_COPY", /* name */
528 FALSE, /* partial_inplace */
531 FALSE), /* pcrel_offset */
533 /* Like R_PPC64_ADDR64, but used when setting global offset table
535 HOWTO (R_PPC64_GLOB_DAT, /* type */
537 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
539 FALSE, /* pc_relative */
541 complain_overflow_dont, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc, /* special_function */
543 "R_PPC64_GLOB_DAT", /* name */
544 FALSE, /* partial_inplace */
546 ONES (64), /* dst_mask */
547 FALSE), /* pcrel_offset */
549 /* Created by the link editor. Marks a procedure linkage table
550 entry for a symbol. */
551 HOWTO (R_PPC64_JMP_SLOT, /* type */
553 0, /* size (0 = byte, 1 = short, 2 = long) */
555 FALSE, /* pc_relative */
557 complain_overflow_dont, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc, /* special_function */
559 "R_PPC64_JMP_SLOT", /* name */
560 FALSE, /* partial_inplace */
563 FALSE), /* pcrel_offset */
565 /* Used only by the dynamic linker. When the object is run, this
566 doubleword64 is set to the load address of the object, plus the
568 HOWTO (R_PPC64_RELATIVE, /* type */
570 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_RELATIVE", /* name */
577 FALSE, /* partial_inplace */
579 ONES (64), /* dst_mask */
580 FALSE), /* pcrel_offset */
582 /* Like R_PPC64_ADDR32, but may be unaligned. */
583 HOWTO (R_PPC64_UADDR32, /* type */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
587 FALSE, /* pc_relative */
589 complain_overflow_bitfield, /* complain_on_overflow */
590 bfd_elf_generic_reloc, /* special_function */
591 "R_PPC64_UADDR32", /* name */
592 FALSE, /* partial_inplace */
594 0xffffffff, /* dst_mask */
595 FALSE), /* pcrel_offset */
597 /* Like R_PPC64_ADDR16, but may be unaligned. */
598 HOWTO (R_PPC64_UADDR16, /* type */
600 1, /* size (0 = byte, 1 = short, 2 = long) */
602 FALSE, /* pc_relative */
604 complain_overflow_bitfield, /* complain_on_overflow */
605 bfd_elf_generic_reloc, /* special_function */
606 "R_PPC64_UADDR16", /* name */
607 FALSE, /* partial_inplace */
609 0xffff, /* dst_mask */
610 FALSE), /* pcrel_offset */
612 /* 32-bit PC relative. */
613 HOWTO (R_PPC64_REL32, /* type */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
617 TRUE, /* pc_relative */
619 /* FIXME: Verify. Was complain_overflow_bitfield. */
620 complain_overflow_signed, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_REL32", /* name */
623 FALSE, /* partial_inplace */
625 0xffffffff, /* dst_mask */
626 TRUE), /* pcrel_offset */
628 /* 32-bit relocation to the symbol's procedure linkage table. */
629 HOWTO (R_PPC64_PLT32, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE, /* pc_relative */
635 complain_overflow_bitfield, /* complain_on_overflow */
636 ppc64_elf_unhandled_reloc, /* special_function */
637 "R_PPC64_PLT32", /* name */
638 FALSE, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
643 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
644 FIXME: R_PPC64_PLTREL32 not supported. */
645 HOWTO (R_PPC64_PLTREL32, /* type */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
649 TRUE, /* pc_relative */
651 complain_overflow_signed, /* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_PPC64_PLTREL32", /* name */
654 FALSE, /* partial_inplace */
656 0xffffffff, /* dst_mask */
657 TRUE), /* pcrel_offset */
659 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
661 HOWTO (R_PPC64_PLT16_LO, /* type */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE, /* pc_relative */
667 complain_overflow_dont, /* complain_on_overflow */
668 ppc64_elf_unhandled_reloc, /* special_function */
669 "R_PPC64_PLT16_LO", /* name */
670 FALSE, /* partial_inplace */
672 0xffff, /* dst_mask */
673 FALSE), /* pcrel_offset */
675 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
677 HOWTO (R_PPC64_PLT16_HI, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE, /* pc_relative */
683 complain_overflow_dont, /* complain_on_overflow */
684 ppc64_elf_unhandled_reloc, /* special_function */
685 "R_PPC64_PLT16_HI", /* name */
686 FALSE, /* partial_inplace */
688 0xffff, /* dst_mask */
689 FALSE), /* pcrel_offset */
691 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
693 HOWTO (R_PPC64_PLT16_HA, /* type */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
697 FALSE, /* pc_relative */
699 complain_overflow_dont, /* complain_on_overflow */
700 ppc64_elf_unhandled_reloc, /* special_function */
701 "R_PPC64_PLT16_HA", /* name */
702 FALSE, /* partial_inplace */
704 0xffff, /* dst_mask */
705 FALSE), /* pcrel_offset */
707 /* 16-bit section relative relocation. */
708 HOWTO (R_PPC64_SECTOFF, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE, /* pc_relative */
714 complain_overflow_bitfield, /* complain_on_overflow */
715 ppc64_elf_sectoff_reloc, /* special_function */
716 "R_PPC64_SECTOFF", /* name */
717 FALSE, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE), /* pcrel_offset */
722 /* Like R_PPC64_SECTOFF, but no overflow warning. */
723 HOWTO (R_PPC64_SECTOFF_LO, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_dont, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc, /* special_function */
731 "R_PPC64_SECTOFF_LO", /* name */
732 FALSE, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC64_SECTOFF_HI, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE, /* pc_relative */
744 complain_overflow_dont, /* complain_on_overflow */
745 ppc64_elf_sectoff_reloc, /* special_function */
746 "R_PPC64_SECTOFF_HI", /* name */
747 FALSE, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE), /* pcrel_offset */
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HA, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE, /* pc_relative */
759 complain_overflow_dont, /* complain_on_overflow */
760 ppc64_elf_sectoff_ha_reloc, /* special_function */
761 "R_PPC64_SECTOFF_HA", /* name */
762 FALSE, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE), /* pcrel_offset */
767 /* Like R_PPC64_REL24 without touching the two least significant bits. */
768 HOWTO (R_PPC64_REL30, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 TRUE, /* pc_relative */
774 complain_overflow_dont, /* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
776 "R_PPC64_REL30", /* name */
777 FALSE, /* partial_inplace */
779 0xfffffffc, /* dst_mask */
780 TRUE), /* pcrel_offset */
782 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
784 /* A standard 64-bit relocation. */
785 HOWTO (R_PPC64_ADDR64, /* type */
787 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 FALSE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC64_ADDR64", /* name */
794 FALSE, /* partial_inplace */
796 ONES (64), /* dst_mask */
797 FALSE), /* pcrel_offset */
799 /* The bits 32-47 of an address. */
800 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE, /* pc_relative */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_PPC64_ADDR16_HIGHER", /* name */
809 FALSE, /* partial_inplace */
811 0xffff, /* dst_mask */
812 FALSE), /* pcrel_offset */
814 /* The bits 32-47 of an address, plus 1 if the contents of the low
815 16 bits, treated as a signed number, is negative. */
816 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 FALSE, /* pc_relative */
822 complain_overflow_dont, /* complain_on_overflow */
823 ppc64_elf_ha_reloc, /* special_function */
824 "R_PPC64_ADDR16_HIGHERA", /* name */
825 FALSE, /* partial_inplace */
827 0xffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
830 /* The bits 48-63 of an address. */
831 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC64_ADDR16_HIGHEST", /* name */
840 FALSE, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* The bits 48-63 of an address, plus 1 if the contents of the low
846 16 bits, treated as a signed number, is negative. */
847 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE, /* pc_relative */
853 complain_overflow_dont, /* complain_on_overflow */
854 ppc64_elf_ha_reloc, /* special_function */
855 "R_PPC64_ADDR16_HIGHESTA", /* name */
856 FALSE, /* partial_inplace */
858 0xffff, /* dst_mask */
859 FALSE), /* pcrel_offset */
861 /* Like ADDR64, but may be unaligned. */
862 HOWTO (R_PPC64_UADDR64, /* type */
864 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
866 FALSE, /* pc_relative */
868 complain_overflow_dont, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
870 "R_PPC64_UADDR64", /* name */
871 FALSE, /* partial_inplace */
873 ONES (64), /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* 64-bit relative relocation. */
877 HOWTO (R_PPC64_REL64, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 TRUE, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_REL64", /* name */
886 FALSE, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 TRUE), /* pcrel_offset */
891 /* 64-bit relocation to the symbol's procedure linkage table. */
892 HOWTO (R_PPC64_PLT64, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 FALSE, /* pc_relative */
898 complain_overflow_dont, /* complain_on_overflow */
899 ppc64_elf_unhandled_reloc, /* special_function */
900 "R_PPC64_PLT64", /* name */
901 FALSE, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 FALSE), /* pcrel_offset */
906 /* 64-bit PC relative relocation to the symbol's procedure linkage
908 /* FIXME: R_PPC64_PLTREL64 not supported. */
909 HOWTO (R_PPC64_PLTREL64, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 TRUE, /* pc_relative */
915 complain_overflow_dont, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc, /* special_function */
917 "R_PPC64_PLTREL64", /* name */
918 FALSE, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 TRUE), /* pcrel_offset */
923 /* 16 bit TOC-relative relocation. */
925 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
926 HOWTO (R_PPC64_TOC16, /* type */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc64_elf_toc_reloc, /* special_function */
934 "R_PPC64_TOC16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation without overflow. */
942 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
943 HOWTO (R_PPC64_TOC16_LO, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_dont, /* complain_on_overflow */
950 ppc64_elf_toc_reloc, /* special_function */
951 "R_PPC64_TOC16_LO", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation, high 16 bits. */
959 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_HI, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE, /* pc_relative */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_toc_reloc, /* special_function */
968 "R_PPC64_TOC16_HI", /* name */
969 FALSE, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
975 contents of the low 16 bits, treated as a signed number, is
978 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
979 HOWTO (R_PPC64_TOC16_HA, /* type */
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_dont, /* complain_on_overflow */
986 ppc64_elf_toc_ha_reloc, /* special_function */
987 "R_PPC64_TOC16_HA", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* 64-bit relocation; insert value of TOC base (.TOC.). */
995 /* R_PPC64_TOC 51 doubleword64 .TOC. */
996 HOWTO (R_PPC64_TOC, /* type */
998 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_bitfield, /* complain_on_overflow */
1003 ppc64_elf_toc64_reloc, /* special_function */
1004 "R_PPC64_TOC", /* name */
1005 FALSE, /* partial_inplace */
1007 ONES (64), /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like R_PPC64_GOT16, but also informs the link editor that the
1011 value to relocate may (!) refer to a PLT entry which the link
1012 editor (a) may replace with the symbol value. If the link editor
1013 is unable to fully resolve the symbol, it may (b) create a PLT
1014 entry and store the address to the new PLT entry in the GOT.
1015 This permits lazy resolution of function symbols at run time.
1016 The link editor may also skip all of this and just (c) emit a
1017 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1018 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1019 HOWTO (R_PPC64_PLTGOT16, /* type */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE, /* pc_relative */
1025 complain_overflow_signed, /* complain_on_overflow */
1026 ppc64_elf_unhandled_reloc, /* special_function */
1027 "R_PPC64_PLTGOT16", /* name */
1028 FALSE, /* partial_inplace */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1033 /* Like R_PPC64_PLTGOT16, but without overflow. */
1034 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1035 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc64_elf_unhandled_reloc, /* special_function */
1043 "R_PPC64_PLTGOT16_LO", /* name */
1044 FALSE, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1050 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 FALSE, /* pc_relative */
1057 complain_overflow_dont, /* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HI", /* name */
1060 FALSE, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1065 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1066 1 if the contents of the low 16 bits, treated as a signed number,
1068 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE, /* pc_relative */
1075 complain_overflow_dont,/* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_HA", /* name */
1078 FALSE, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1083 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1084 HOWTO (R_PPC64_ADDR16_DS, /* type */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE, /* pc_relative */
1090 complain_overflow_bitfield, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
1092 "R_PPC64_ADDR16_DS", /* name */
1093 FALSE, /* partial_inplace */
1095 0xfffc, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE, /* pc_relative */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_PPC64_ADDR16_LO_DS",/* name */
1108 FALSE, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1113 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_GOT16_DS, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE, /* pc_relative */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc, /* special_function */
1122 "R_PPC64_GOT16_DS", /* name */
1123 FALSE, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE, /* pc_relative */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_GOT16_LO_DS", /* name */
1138 FALSE, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1143 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE, /* pc_relative */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc, /* special_function */
1152 "R_PPC64_PLT16_LO_DS", /* name */
1153 FALSE, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1158 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE, /* pc_relative */
1165 complain_overflow_bitfield, /* complain_on_overflow */
1166 ppc64_elf_sectoff_reloc, /* special_function */
1167 "R_PPC64_SECTOFF_DS", /* name */
1168 FALSE, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE, /* pc_relative */
1180 complain_overflow_dont, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc, /* special_function */
1182 "R_PPC64_SECTOFF_LO_DS",/* name */
1183 FALSE, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1188 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_TOC16_DS, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE, /* pc_relative */
1195 complain_overflow_signed, /* complain_on_overflow */
1196 ppc64_elf_toc_reloc, /* special_function */
1197 "R_PPC64_TOC16_DS", /* name */
1198 FALSE, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE, /* pc_relative */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc, /* special_function */
1212 "R_PPC64_TOC16_LO_DS", /* name */
1213 FALSE, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1218 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1219 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1220 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_signed, /* complain_on_overflow */
1227 ppc64_elf_unhandled_reloc, /* special_function */
1228 "R_PPC64_PLTGOT16_DS", /* name */
1229 FALSE, /* partial_inplace */
1231 0xfffc, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1235 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1236 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE, /* pc_relative */
1242 complain_overflow_dont, /* complain_on_overflow */
1243 ppc64_elf_unhandled_reloc, /* special_function */
1244 "R_PPC64_PLTGOT16_LO_DS",/* name */
1245 FALSE, /* partial_inplace */
1247 0xfffc, /* dst_mask */
1248 FALSE), /* pcrel_offset */
1250 /* Marker relocs for TLS. */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE, /* pc_relative */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_PPC64_TLS", /* name */
1260 FALSE, /* partial_inplace */
1263 FALSE), /* pcrel_offset */
1265 HOWTO (R_PPC64_TLSGD,
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont, /* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC64_TLSGD", /* name */
1274 FALSE, /* partial_inplace */
1277 FALSE), /* pcrel_offset */
1279 HOWTO (R_PPC64_TLSLD,
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLSLD", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TOCSAVE,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TOCSAVE", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 /* Computes the load module index of the load module that contains the
1308 definition of its TLS sym. */
1309 HOWTO (R_PPC64_DTPMOD64,
1311 4, /* size (0 = byte, 1 = short, 2 = long) */
1313 FALSE, /* pc_relative */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc, /* special_function */
1317 "R_PPC64_DTPMOD64", /* name */
1318 FALSE, /* partial_inplace */
1320 ONES (64), /* dst_mask */
1321 FALSE), /* pcrel_offset */
1323 /* Computes a dtv-relative displacement, the difference between the value
1324 of sym+add and the base address of the thread-local storage block that
1325 contains the definition of sym, minus 0x8000. */
1326 HOWTO (R_PPC64_DTPREL64,
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL64", /* name */
1335 FALSE, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 /* A 16 bit dtprel reloc. */
1341 HOWTO (R_PPC64_DTPREL16,
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_signed, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16", /* name */
1350 FALSE, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1355 /* Like DTPREL16, but no overflow. */
1356 HOWTO (R_PPC64_DTPREL16_LO,
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_LO", /* name */
1365 FALSE, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1370 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HI,
1372 16, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE, /* pc_relative */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HI", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HA,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HA", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HIGHER,
1402 32, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_dont, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HIGHER", /* name */
1410 FALSE, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1417 32, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE, /* pc_relative */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_HIGHERA", /* name */
1425 FALSE, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1432 48, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHEST", /* name */
1440 FALSE, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1460 /* Like DTPREL16, but for insns with a DS field. */
1461 HOWTO (R_PPC64_DTPREL16_DS,
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_DS", /* name */
1470 FALSE, /* partial_inplace */
1472 0xfffc, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1475 /* Like DTPREL16_DS, but no overflow. */
1476 HOWTO (R_PPC64_DTPREL16_LO_DS,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_LO_DS", /* name */
1485 FALSE, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1490 /* Computes a tp-relative displacement, the difference between the value of
1491 sym+add and the value of the thread pointer (r13). */
1492 HOWTO (R_PPC64_TPREL64,
1494 4, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL64", /* name */
1501 FALSE, /* partial_inplace */
1503 ONES (64), /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* A 16 bit tprel reloc. */
1507 HOWTO (R_PPC64_TPREL16,
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_signed, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16", /* name */
1516 FALSE, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Like TPREL16, but no overflow. */
1522 HOWTO (R_PPC64_TPREL16_LO,
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_LO", /* name */
1531 FALSE, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* Like TPREL16_LO, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HI,
1538 16, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE, /* pc_relative */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HI", /* name */
1546 FALSE, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1551 /* Like TPREL16_HI, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HA,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE, /* pc_relative */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HA", /* name */
1561 FALSE, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1566 /* Like TPREL16_HI, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HIGHER,
1568 32, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE, /* pc_relative */
1573 complain_overflow_dont, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HIGHER", /* name */
1576 FALSE, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1581 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHERA,
1583 32, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE, /* pc_relative */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_HIGHERA", /* name */
1591 FALSE, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHEST,
1598 48, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE, /* pc_relative */
1603 complain_overflow_dont, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_TPREL16_HIGHEST", /* name */
1606 FALSE, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1611 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE, /* pc_relative */
1618 complain_overflow_dont, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc, /* special_function */
1620 "R_PPC64_TPREL16_HIGHESTA", /* name */
1621 FALSE, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1626 /* Like TPREL16, but for insns with a DS field. */
1627 HOWTO (R_PPC64_TPREL16_DS,
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE, /* pc_relative */
1633 complain_overflow_signed, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_DS", /* name */
1636 FALSE, /* partial_inplace */
1638 0xfffc, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1641 /* Like TPREL16_DS, but no overflow. */
1642 HOWTO (R_PPC64_TPREL16_LO_DS,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE, /* pc_relative */
1648 complain_overflow_dont, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_LO_DS", /* name */
1651 FALSE, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1658 to the first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSGD16,
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_signed, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_GOT_TLSGD16", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* Like GOT_TLSGD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_GOT_TLSGD16_LO", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1690 16, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE, /* pc_relative */
1695 complain_overflow_dont, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc, /* special_function */
1697 "R_PPC64_GOT_TLSGD16_HI", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HA", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1718 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1719 with values (sym+add)@dtpmod and zero, and computes the offset to the
1720 first entry relative to the TOC base (r2). */
1721 HOWTO (R_PPC64_GOT_TLSLD16,
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE, /* pc_relative */
1727 complain_overflow_signed, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc, /* special_function */
1729 "R_PPC64_GOT_TLSLD16", /* name */
1730 FALSE, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE), /* pcrel_offset */
1735 /* Like GOT_TLSLD16, but no overflow. */
1736 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE, /* pc_relative */
1742 complain_overflow_dont, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSLD16_LO", /* name */
1745 FALSE, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1750 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1752 16, /* rightshift */
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE, /* pc_relative */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc, /* special_function */
1759 "R_PPC64_GOT_TLSLD16_HI", /* name */
1760 FALSE, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE, /* pc_relative */
1772 complain_overflow_dont, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HA", /* name */
1775 FALSE, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1781 the offset to the entry relative to the TOC base (r2). */
1782 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 FALSE, /* pc_relative */
1788 complain_overflow_signed, /* complain_on_overflow */
1789 ppc64_elf_unhandled_reloc, /* special_function */
1790 "R_PPC64_GOT_DTPREL16_DS", /* name */
1791 FALSE, /* partial_inplace */
1793 0xfffc, /* dst_mask */
1794 FALSE), /* pcrel_offset */
1796 /* Like GOT_DTPREL16_DS, but no overflow. */
1797 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE, /* pc_relative */
1803 complain_overflow_dont, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1806 FALSE, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1813 16, /* rightshift */
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE, /* pc_relative */
1818 complain_overflow_dont, /* complain_on_overflow */
1819 ppc64_elf_unhandled_reloc, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_HI", /* name */
1821 FALSE, /* partial_inplace */
1823 0xffff, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE, /* pc_relative */
1833 complain_overflow_dont, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HA", /* name */
1836 FALSE, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE), /* pcrel_offset */
1841 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1842 offset to the entry relative to the TOC base (r2). */
1843 HOWTO (R_PPC64_GOT_TPREL16_DS,
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_signed, /* complain_on_overflow */
1850 ppc64_elf_unhandled_reloc, /* special_function */
1851 "R_PPC64_GOT_TPREL16_DS", /* name */
1852 FALSE, /* partial_inplace */
1854 0xfffc, /* dst_mask */
1855 FALSE), /* pcrel_offset */
1857 /* Like GOT_TPREL16_DS, but no overflow. */
1858 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE, /* pc_relative */
1864 complain_overflow_dont, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc, /* special_function */
1866 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1867 FALSE, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE), /* pcrel_offset */
1872 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1873 HOWTO (R_PPC64_GOT_TPREL16_HI,
1874 16, /* rightshift */
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1877 FALSE, /* pc_relative */
1879 complain_overflow_dont, /* complain_on_overflow */
1880 ppc64_elf_unhandled_reloc, /* special_function */
1881 "R_PPC64_GOT_TPREL16_HI", /* name */
1882 FALSE, /* partial_inplace */
1884 0xffff, /* dst_mask */
1885 FALSE), /* pcrel_offset */
1887 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HA,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE, /* pc_relative */
1894 complain_overflow_dont, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HA", /* name */
1897 FALSE, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE), /* pcrel_offset */
1902 HOWTO (R_PPC64_JMP_IREL, /* type */
1904 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1906 FALSE, /* pc_relative */
1908 complain_overflow_dont, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc, /* special_function */
1910 "R_PPC64_JMP_IREL", /* name */
1911 FALSE, /* partial_inplace */
1914 FALSE), /* pcrel_offset */
1916 HOWTO (R_PPC64_IRELATIVE, /* type */
1918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_dont, /* complain_on_overflow */
1923 bfd_elf_generic_reloc, /* special_function */
1924 "R_PPC64_IRELATIVE", /* name */
1925 FALSE, /* partial_inplace */
1927 ONES (64), /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* A 16 bit relative relocation. */
1931 HOWTO (R_PPC64_REL16, /* type */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 TRUE, /* pc_relative */
1937 complain_overflow_bitfield, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 "R_PPC64_REL16", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 TRUE), /* pcrel_offset */
1945 /* A 16 bit relative relocation without overflow. */
1946 HOWTO (R_PPC64_REL16_LO, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE, /* pc_relative */
1952 complain_overflow_dont,/* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_REL16_LO", /* name */
1955 FALSE, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE), /* pcrel_offset */
1960 /* The high order 16 bits of a relative address. */
1961 HOWTO (R_PPC64_REL16_HI, /* type */
1962 16, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1965 TRUE, /* pc_relative */
1967 complain_overflow_dont, /* complain_on_overflow */
1968 bfd_elf_generic_reloc, /* special_function */
1969 "R_PPC64_REL16_HI", /* name */
1970 FALSE, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address, plus 1 if the contents of
1976 the low 16 bits, treated as a signed number, is negative. */
1977 HOWTO (R_PPC64_REL16_HA, /* type */
1978 16, /* rightshift */
1979 1, /* size (0 = byte, 1 = short, 2 = long) */
1981 TRUE, /* pc_relative */
1983 complain_overflow_dont, /* complain_on_overflow */
1984 ppc64_elf_ha_reloc, /* special_function */
1985 "R_PPC64_REL16_HA", /* name */
1986 FALSE, /* partial_inplace */
1988 0xffff, /* dst_mask */
1989 TRUE), /* pcrel_offset */
1991 /* GNU extension to record C++ vtable hierarchy. */
1992 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1994 0, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE, /* pc_relative */
1998 complain_overflow_dont, /* complain_on_overflow */
1999 NULL, /* special_function */
2000 "R_PPC64_GNU_VTINHERIT", /* name */
2001 FALSE, /* partial_inplace */
2004 FALSE), /* pcrel_offset */
2006 /* GNU extension to record C++ vtable member usage. */
2007 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2009 0, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 NULL, /* special_function */
2015 "R_PPC64_GNU_VTENTRY", /* name */
2016 FALSE, /* partial_inplace */
2019 FALSE), /* pcrel_offset */
2023 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2027 ppc_howto_init (void)
2029 unsigned int i, type;
2032 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2035 type = ppc64_elf_howto_raw[i].type;
2036 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2037 / sizeof (ppc64_elf_howto_table[0])));
2038 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2042 static reloc_howto_type *
2043 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2044 bfd_reloc_code_real_type code)
2046 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2048 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2049 /* Initialize howto table if needed. */
2057 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2059 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2061 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2063 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2065 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2067 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2069 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2071 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2073 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2075 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2077 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2079 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2081 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2083 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2085 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2087 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2089 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2091 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2093 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2095 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2097 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2099 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2101 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2103 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2105 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2107 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2109 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2111 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2113 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2115 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2117 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2119 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2121 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2123 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2125 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2127 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2129 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2131 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2133 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2135 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2137 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2139 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2141 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2143 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2145 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2147 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2149 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2151 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2153 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2155 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2157 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2159 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2161 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2163 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2165 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2167 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2169 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2171 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2173 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2175 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2177 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2179 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2181 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2183 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2185 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2187 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2189 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2191 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2193 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2195 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2197 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2199 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2201 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2203 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2205 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2207 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2209 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2211 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2213 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2215 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2217 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2219 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2221 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2223 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2225 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2227 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2229 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2231 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2233 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2235 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2237 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2239 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2241 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2243 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2245 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2247 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2249 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2251 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2253 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2255 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2257 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2259 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2261 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2263 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2265 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2267 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2269 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2273 return ppc64_elf_howto_table[r];
2276 static reloc_howto_type *
2277 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2283 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2285 if (ppc64_elf_howto_raw[i].name != NULL
2286 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2287 return &ppc64_elf_howto_raw[i];
2292 /* Set the howto pointer for a PowerPC ELF reloc. */
2295 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2296 Elf_Internal_Rela *dst)
2300 /* Initialize howto table if needed. */
2301 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2304 type = ELF64_R_TYPE (dst->r_info);
2305 if (type >= (sizeof (ppc64_elf_howto_table)
2306 / sizeof (ppc64_elf_howto_table[0])))
2308 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2310 type = R_PPC64_NONE;
2312 cache_ptr->howto = ppc64_elf_howto_table[type];
2315 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2317 static bfd_reloc_status_type
2318 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2319 void *data, asection *input_section,
2320 bfd *output_bfd, char **error_message)
2322 /* If this is a relocatable link (output_bfd test tells us), just
2323 call the generic function. Any adjustment will be done at final
2325 if (output_bfd != NULL)
2326 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2327 input_section, output_bfd, error_message);
2329 /* Adjust the addend for sign extension of the low 16 bits.
2330 We won't actually be using the low 16 bits, so trashing them
2332 reloc_entry->addend += 0x8000;
2333 return bfd_reloc_continue;
2336 static bfd_reloc_status_type
2337 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2341 if (output_bfd != NULL)
2342 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2343 input_section, output_bfd, error_message);
2345 if (strcmp (symbol->section->name, ".opd") == 0
2346 && (symbol->section->owner->flags & DYNAMIC) == 0)
2348 bfd_vma dest = opd_entry_value (symbol->section,
2349 symbol->value + reloc_entry->addend,
2351 if (dest != (bfd_vma) -1)
2352 reloc_entry->addend = dest - (symbol->value
2353 + symbol->section->output_section->vma
2354 + symbol->section->output_offset);
2356 return bfd_reloc_continue;
2359 static bfd_reloc_status_type
2360 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2361 void *data, asection *input_section,
2362 bfd *output_bfd, char **error_message)
2365 enum elf_ppc64_reloc_type r_type;
2366 bfd_size_type octets;
2367 /* Assume 'at' branch hints. */
2368 bfd_boolean is_isa_v2 = TRUE;
2370 /* If this is a relocatable link (output_bfd test tells us), just
2371 call the generic function. Any adjustment will be done at final
2373 if (output_bfd != NULL)
2374 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2375 input_section, output_bfd, error_message);
2377 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2378 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2379 insn &= ~(0x01 << 21);
2380 r_type = reloc_entry->howto->type;
2381 if (r_type == R_PPC64_ADDR14_BRTAKEN
2382 || r_type == R_PPC64_REL14_BRTAKEN)
2383 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2387 /* Set 'a' bit. This is 0b00010 in BO field for branch
2388 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2389 for branch on CTR insns (BO == 1a00t or 1a01t). */
2390 if ((insn & (0x14 << 21)) == (0x04 << 21))
2392 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2402 if (!bfd_is_com_section (symbol->section))
2403 target = symbol->value;
2404 target += symbol->section->output_section->vma;
2405 target += symbol->section->output_offset;
2406 target += reloc_entry->addend;
2408 from = (reloc_entry->address
2409 + input_section->output_offset
2410 + input_section->output_section->vma);
2412 /* Invert 'y' bit if not the default. */
2413 if ((bfd_signed_vma) (target - from) < 0)
2416 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2418 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2419 input_section, output_bfd, error_message);
2422 static bfd_reloc_status_type
2423 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2424 void *data, asection *input_section,
2425 bfd *output_bfd, char **error_message)
2427 /* If this is a relocatable link (output_bfd test tells us), just
2428 call the generic function. Any adjustment will be done at final
2430 if (output_bfd != NULL)
2431 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2432 input_section, output_bfd, error_message);
2434 /* Subtract the symbol section base address. */
2435 reloc_entry->addend -= symbol->section->output_section->vma;
2436 return bfd_reloc_continue;
2439 static bfd_reloc_status_type
2440 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2441 void *data, asection *input_section,
2442 bfd *output_bfd, char **error_message)
2444 /* If this is a relocatable link (output_bfd test tells us), just
2445 call the generic function. Any adjustment will be done at final
2447 if (output_bfd != NULL)
2448 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2449 input_section, output_bfd, error_message);
2451 /* Subtract the symbol section base address. */
2452 reloc_entry->addend -= symbol->section->output_section->vma;
2454 /* Adjust the addend for sign extension of the low 16 bits. */
2455 reloc_entry->addend += 0x8000;
2456 return bfd_reloc_continue;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd != NULL)
2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2471 input_section, output_bfd, error_message);
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2475 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2479 return bfd_reloc_continue;
2482 static bfd_reloc_status_type
2483 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2484 void *data, asection *input_section,
2485 bfd *output_bfd, char **error_message)
2489 /* If this is a relocatable link (output_bfd test tells us), just
2490 call the generic function. Any adjustment will be done at final
2492 if (output_bfd != NULL)
2493 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2494 input_section, output_bfd, error_message);
2496 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2498 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2500 /* Subtract the TOC base address. */
2501 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2503 /* Adjust the addend for sign extension of the low 16 bits. */
2504 reloc_entry->addend += 0x8000;
2505 return bfd_reloc_continue;
2508 static bfd_reloc_status_type
2509 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2510 void *data, asection *input_section,
2511 bfd *output_bfd, char **error_message)
2514 bfd_size_type octets;
2516 /* If this is a relocatable link (output_bfd test tells us), just
2517 call the generic function. Any adjustment will be done at final
2519 if (output_bfd != NULL)
2520 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2521 input_section, output_bfd, error_message);
2523 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2525 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2527 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2528 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2529 return bfd_reloc_ok;
2532 static bfd_reloc_status_type
2533 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2534 void *data, asection *input_section,
2535 bfd *output_bfd, char **error_message)
2537 /* If this is a relocatable link (output_bfd test tells us), just
2538 call the generic function. Any adjustment will be done at final
2540 if (output_bfd != NULL)
2541 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2542 input_section, output_bfd, error_message);
2544 if (error_message != NULL)
2546 static char buf[60];
2547 sprintf (buf, "generic linker can't handle %s",
2548 reloc_entry->howto->name);
2549 *error_message = buf;
2551 return bfd_reloc_dangerous;
2554 /* Track GOT entries needed for a given symbol. We might need more
2555 than one got entry per symbol. */
2558 struct got_entry *next;
2560 /* The symbol addend that we'll be placing in the GOT. */
2563 /* Unlike other ELF targets, we use separate GOT entries for the same
2564 symbol referenced from different input files. This is to support
2565 automatic multiple TOC/GOT sections, where the TOC base can vary
2566 from one input file to another. After partitioning into TOC groups
2567 we merge entries within the group.
2569 Point to the BFD owning this GOT entry. */
2572 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2573 TLS_TPREL or TLS_DTPREL for tls entries. */
2574 unsigned char tls_type;
2576 /* Non-zero if got.ent points to real entry. */
2577 unsigned char is_indirect;
2579 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2582 bfd_signed_vma refcount;
2584 struct got_entry *ent;
2588 /* The same for PLT. */
2591 struct plt_entry *next;
2597 bfd_signed_vma refcount;
2602 struct ppc64_elf_obj_tdata
2604 struct elf_obj_tdata elf;
2606 /* Shortcuts to dynamic linker sections. */
2610 /* Used during garbage collection. We attach global symbols defined
2611 on removed .opd entries to this section so that the sym is removed. */
2612 asection *deleted_section;
2614 /* TLS local dynamic got entry handling. Support for multiple GOT
2615 sections means we potentially need one of these for each input bfd. */
2616 struct got_entry tlsld_got;
2618 /* A copy of relocs before they are modified for --emit-relocs. */
2619 Elf_Internal_Rela *opd_relocs;
2621 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2622 the reloc to be in the range -32768 to 32767. */
2623 unsigned int has_small_toc_reloc : 1;
2625 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2626 instruction not one we handle. */
2627 unsigned int unexpected_toc_insn : 1;
2630 #define ppc64_elf_tdata(bfd) \
2631 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2633 #define ppc64_tlsld_got(bfd) \
2634 (&ppc64_elf_tdata (bfd)->tlsld_got)
2636 #define is_ppc64_elf(bfd) \
2637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2638 && elf_object_id (bfd) == PPC64_ELF_DATA)
2640 /* Override the generic function because we store some extras. */
2643 ppc64_elf_mkobject (bfd *abfd)
2645 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2649 /* Fix bad default arch selected for a 64 bit input bfd when the
2650 default is 32 bit. */
2653 ppc64_elf_object_p (bfd *abfd)
2655 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2657 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2659 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2661 /* Relies on arch after 32 bit default being 64 bit default. */
2662 abfd->arch_info = abfd->arch_info->next;
2663 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2669 /* Support for core dump NOTE sections. */
2672 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2674 size_t offset, size;
2676 if (note->descsz != 504)
2680 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2683 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
2689 /* Make a ".reg/999" section. */
2690 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2691 size, note->descpos + offset);
2695 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2697 if (note->descsz != 136)
2700 elf_tdata (abfd)->core_pid
2701 = bfd_get_32 (abfd, note->descdata + 24);
2702 elf_tdata (abfd)->core_program
2703 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2704 elf_tdata (abfd)->core_command
2705 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2711 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2724 va_start (ap, note_type);
2725 memset (data, 0, sizeof (data));
2726 strncpy (data + 40, va_arg (ap, const char *), 16);
2727 strncpy (data + 56, va_arg (ap, const char *), 80);
2729 return elfcore_write_note (abfd, buf, bufsiz,
2730 "CORE", note_type, data, sizeof (data));
2741 va_start (ap, note_type);
2742 memset (data, 0, 112);
2743 pid = va_arg (ap, long);
2744 bfd_put_32 (abfd, pid, data + 32);
2745 cursig = va_arg (ap, int);
2746 bfd_put_16 (abfd, cursig, data + 12);
2747 greg = va_arg (ap, const void *);
2748 memcpy (data + 112, greg, 384);
2749 memset (data + 496, 0, 8);
2751 return elfcore_write_note (abfd, buf, bufsiz,
2752 "CORE", note_type, data, sizeof (data));
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2767 { NULL, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type {
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection **func_sec;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2816 if (!sec->used_by_bfd)
2818 struct _ppc64_elf_section_data *sdata;
2819 bfd_size_type amt = sizeof (*sdata);
2821 sdata = bfd_zalloc (abfd, amt);
2824 sec->used_by_bfd = sdata;
2827 return _bfd_elf_new_section_hook (abfd, sec);
2830 static struct _opd_sec_data *
2831 get_opd_info (asection * sec)
2834 && ppc64_elf_section_data (sec) != NULL
2835 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2836 return &ppc64_elf_section_data (sec)->u.opd;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap, const void *bp)
2848 const asymbol *a = * (const asymbol **) ap;
2849 const asymbol *b = * (const asymbol **) bp;
2851 /* Section symbols first. */
2852 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2854 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2857 /* then .opd symbols. */
2858 if (strcmp (a->section->name, ".opd") == 0
2859 && strcmp (b->section->name, ".opd") != 0)
2861 if (strcmp (a->section->name, ".opd") != 0
2862 && strcmp (b->section->name, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 == (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2872 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 != (SEC_CODE | SEC_ALLOC)
2874 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 == (SEC_CODE | SEC_ALLOC))
2878 if (synthetic_relocatable)
2880 if (a->section->id < b->section->id)
2883 if (a->section->id > b->section->id)
2887 if (a->value + a->section->vma < b->value + b->section->vma)
2890 if (a->value + a->section->vma > b->value + b->section->vma)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2898 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2901 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2904 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2907 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2910 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2913 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2916 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2933 mid = (lo + hi) >> 1;
2934 if (syms[mid]->value + syms[mid]->section->vma < value)
2936 else if (syms[mid]->value + syms[mid]->section->vma > value)
2946 mid = (lo + hi) >> 1;
2947 if (syms[mid]->section->id < id)
2949 else if (syms[mid]->section->id > id)
2951 else if (syms[mid]->value < value)
2953 else if (syms[mid]->value > value)
2963 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2965 bfd_vma vma = *(bfd_vma *) ptr;
2966 return ((section->flags & SEC_ALLOC) != 0
2967 && section->vma <= vma
2968 && vma < section->vma + section->size);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2976 long static_count, asymbol **static_syms,
2977 long dyn_count, asymbol **dyn_syms,
2984 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2986 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2991 opd = bfd_get_section_by_name (abfd, ".opd");
2995 symcount = static_count;
2997 symcount += dyn_count;
3001 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3005 if (!relocatable && static_count != 0 && dyn_count != 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms, static_syms, static_count * sizeof (*syms));
3009 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3011 else if (!relocatable && static_count == 0)
3012 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3014 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3016 synthetic_relocatable = relocatable;
3017 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3019 if (!relocatable && symcount > 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i = 1, j = 1; i < symcount; ++i)
3026 if (syms[i - 1]->value + syms[i - 1]->section->vma
3027 != syms[i]->value + syms[i]->section->vma)
3028 syms[j++] = syms[i];
3033 if (strcmp (syms[i]->section->name, ".opd") == 0)
3037 for (; i < symcount; ++i)
3038 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3039 != (SEC_CODE | SEC_ALLOC))
3040 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3044 for (; i < symcount; ++i)
3045 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3049 for (; i < symcount; ++i)
3050 if (strcmp (syms[i]->section->name, ".opd") != 0)
3054 for (; i < symcount; ++i)
3055 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3056 != (SEC_CODE | SEC_ALLOC))
3064 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3069 if (opdsymend == secsymend)
3072 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3073 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3077 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3084 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3088 while (r < opd->relocation + relcount
3089 && r->address < syms[i]->value + opd->vma)
3092 if (r == opd->relocation + relcount)
3095 if (r->address != syms[i]->value + opd->vma)
3098 if (r->howto->type != R_PPC64_ADDR64)
3101 sym = *r->sym_ptr_ptr;
3102 if (!sym_exists_at (syms, opdsymend, symcount,
3103 sym->section->id, sym->value + r->addend))
3106 size += sizeof (asymbol);
3107 size += strlen (syms[i]->name) + 2;
3111 s = *ret = bfd_malloc (size);
3118 names = (char *) (s + count);
3120 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3124 while (r < opd->relocation + relcount
3125 && r->address < syms[i]->value + opd->vma)
3128 if (r == opd->relocation + relcount)
3131 if (r->address != syms[i]->value + opd->vma)
3134 if (r->howto->type != R_PPC64_ADDR64)
3137 sym = *r->sym_ptr_ptr;
3138 if (!sym_exists_at (syms, opdsymend, symcount,
3139 sym->section->id, sym->value + r->addend))
3144 s->flags |= BSF_SYNTHETIC;
3145 s->section = sym->section;
3146 s->value = sym->value + r->addend;
3149 len = strlen (syms[i]->name);
3150 memcpy (names, syms[i]->name, len + 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s->udata.p = syms[i];
3161 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3165 bfd_vma glink_vma = 0, resolv_vma = 0;
3166 asection *dynamic, *glink = NULL, *relplt = NULL;
3169 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3173 free_contents_and_exit:
3181 for (i = secsymend; i < opdsymend; ++i)
3185 /* Ignore bogus symbols. */
3186 if (syms[i]->value > opd->size - 8)
3189 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3190 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3193 size += sizeof (asymbol);
3194 size += strlen (syms[i]->name) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3202 bfd_byte *dynbuf, *extdyn, *extdynend;
3204 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3206 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3207 goto free_contents_and_exit;
3209 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3210 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3213 extdynend = extdyn + dynamic->size;
3214 for (; extdyn < extdynend; extdyn += extdynsize)
3216 Elf_Internal_Dyn dyn;
3217 (*swap_dyn_in) (abfd, extdyn, &dyn);
3219 if (dyn.d_tag == DT_NULL)
3222 if (dyn.d_tag == DT_PPC64_GLINK)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma = dyn.d_un.d_val + 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink = bfd_sections_find_if (abfd, section_covers_vma,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd, glink, buf,
3245 glink_vma + 4 - glink->vma, 4))
3247 unsigned int insn = bfd_get_32 (abfd, buf);
3249 if ((insn & ~0x3fffffc) == 0)
3250 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3254 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3256 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3259 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3260 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3261 goto free_contents_and_exit;
3263 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3264 size += plt_count * sizeof (asymbol);
3266 p = relplt->relocation;
3267 for (i = 0; i < plt_count; i++, p++)
3269 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3271 size += sizeof ("+0x") - 1 + 16;
3276 s = *ret = bfd_malloc (size);
3278 goto free_contents_and_exit;
3280 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3282 for (i = secsymend; i < opdsymend; ++i)
3286 if (syms[i]->value > opd->size - 8)
3289 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3290 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3294 asection *sec = abfd->sections;
3301 long mid = (lo + hi) >> 1;
3302 if (syms[mid]->section->vma < ent)
3304 else if (syms[mid]->section->vma > ent)
3308 sec = syms[mid]->section;
3313 if (lo >= hi && lo > codesecsym)
3314 sec = syms[lo - 1]->section;
3316 for (; sec != NULL; sec = sec->next)
3320 /* SEC_LOAD may not be set if SEC is from a separate debug
3322 if ((sec->flags & SEC_ALLOC) == 0)
3324 if ((sec->flags & SEC_CODE) != 0)
3327 s->flags |= BSF_SYNTHETIC;
3328 s->value = ent - s->section->vma;
3331 len = strlen (syms[i]->name);
3332 memcpy (names, syms[i]->name, len + 1);
3334 /* Have udata.p point back to the original symbol this
3335 synthetic symbol was derived from. */
3336 s->udata.p = syms[i];
3342 if (glink != NULL && relplt != NULL)
3346 /* Add a symbol for the main glink trampoline. */
3347 memset (s, 0, sizeof *s);
3349 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3351 s->value = resolv_vma - glink->vma;
3353 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3354 names += sizeof ("__glink_PLTresolve");
3359 /* FIXME: It would be very much nicer to put sym@plt on the
3360 stub rather than on the glink branch table entry. The
3361 objdump disassembler would then use a sensible symbol
3362 name on plt calls. The difficulty in doing so is
3363 a) finding the stubs, and,
3364 b) matching stubs against plt entries, and,
3365 c) there can be multiple stubs for a given plt entry.
3367 Solving (a) could be done by code scanning, but older
3368 ppc64 binaries used different stubs to current code.
3369 (b) is the tricky one since you need to known the toc
3370 pointer for at least one function that uses a pic stub to
3371 be able to calculate the plt address referenced.
3372 (c) means gdb would need to set multiple breakpoints (or
3373 find the glink branch itself) when setting breakpoints
3374 for pending shared library loads. */
3375 p = relplt->relocation;
3376 for (i = 0; i < plt_count; i++, p++)
3380 *s = **p->sym_ptr_ptr;
3381 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3382 we are defining a symbol, ensure one of them is set. */
3383 if ((s->flags & BSF_LOCAL) == 0)
3384 s->flags |= BSF_GLOBAL;
3385 s->flags |= BSF_SYNTHETIC;
3387 s->value = glink_vma - glink->vma;
3390 len = strlen ((*p->sym_ptr_ptr)->name);
3391 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3395 memcpy (names, "+0x", sizeof ("+0x") - 1);
3396 names += sizeof ("+0x") - 1;
3397 bfd_sprintf_vma (abfd, names, p->addend);
3398 names += strlen (names);
3400 memcpy (names, "@plt", sizeof ("@plt"));
3401 names += sizeof ("@plt");
3416 /* The following functions are specific to the ELF linker, while
3417 functions above are used generally. Those named ppc64_elf_* are
3418 called by the main ELF linker code. They appear in this file more
3419 or less in the order in which they are called. eg.
3420 ppc64_elf_check_relocs is called early in the link process,
3421 ppc64_elf_finish_dynamic_sections is one of the last functions
3424 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3425 functions have both a function code symbol and a function descriptor
3426 symbol. A call to foo in a relocatable object file looks like:
3433 The function definition in another object file might be:
3437 . .quad .TOC.@tocbase
3443 When the linker resolves the call during a static link, the branch
3444 unsurprisingly just goes to .foo and the .opd information is unused.
3445 If the function definition is in a shared library, things are a little
3446 different: The call goes via a plt call stub, the opd information gets
3447 copied to the plt, and the linker patches the nop.
3455 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3456 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3457 . std 2,40(1) # this is the general idea
3465 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3467 The "reloc ()" notation is supposed to indicate that the linker emits
3468 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3471 What are the difficulties here? Well, firstly, the relocations
3472 examined by the linker in check_relocs are against the function code
3473 sym .foo, while the dynamic relocation in the plt is emitted against
3474 the function descriptor symbol, foo. Somewhere along the line, we need
3475 to carefully copy dynamic link information from one symbol to the other.
3476 Secondly, the generic part of the elf linker will make .foo a dynamic
3477 symbol as is normal for most other backends. We need foo dynamic
3478 instead, at least for an application final link. However, when
3479 creating a shared library containing foo, we need to have both symbols
3480 dynamic so that references to .foo are satisfied during the early
3481 stages of linking. Otherwise the linker might decide to pull in a
3482 definition from some other object, eg. a static library.
3484 Update: As of August 2004, we support a new convention. Function
3485 calls may use the function descriptor symbol, ie. "bl foo". This
3486 behaves exactly as "bl .foo". */
3488 /* Of those relocs that might be copied as dynamic relocs, this function
3489 selects those that must be copied when linking a shared library,
3490 even when the symbol is local. */
3493 must_be_dyn_reloc (struct bfd_link_info *info,
3494 enum elf_ppc64_reloc_type r_type)
3506 case R_PPC64_TPREL16:
3507 case R_PPC64_TPREL16_LO:
3508 case R_PPC64_TPREL16_HI:
3509 case R_PPC64_TPREL16_HA:
3510 case R_PPC64_TPREL16_DS:
3511 case R_PPC64_TPREL16_LO_DS:
3512 case R_PPC64_TPREL16_HIGHER:
3513 case R_PPC64_TPREL16_HIGHERA:
3514 case R_PPC64_TPREL16_HIGHEST:
3515 case R_PPC64_TPREL16_HIGHESTA:
3516 case R_PPC64_TPREL64:
3517 return !info->executable;
3521 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3522 copying dynamic variables from a shared lib into an app's dynbss
3523 section, and instead use a dynamic relocation to point into the
3524 shared lib. With code that gcc generates, it's vital that this be
3525 enabled; In the PowerPC64 ABI, the address of a function is actually
3526 the address of a function descriptor, which resides in the .opd
3527 section. gcc uses the descriptor directly rather than going via the
3528 GOT as some other ABI's do, which means that initialized function
3529 pointers must reference the descriptor. Thus, a function pointer
3530 initialized to the address of a function in a shared library will
3531 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3532 redefines the function descriptor symbol to point to the copy. This
3533 presents a problem as a plt entry for that function is also
3534 initialized from the function descriptor symbol and the copy reloc
3535 may not be initialized first. */
3536 #define ELIMINATE_COPY_RELOCS 1
3538 /* Section name for stubs is the associated section name plus this
3540 #define STUB_SUFFIX ".stub"
3543 ppc_stub_long_branch:
3544 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3545 destination, but a 24 bit branch in a stub section will reach.
3548 ppc_stub_plt_branch:
3549 Similar to the above, but a 24 bit branch in the stub section won't
3550 reach its destination.
3551 . addis %r12,%r2,xxx@toc@ha
3552 . ld %r11,xxx@toc@l(%r12)
3557 Used to call a function in a shared library. If it so happens that
3558 the plt entry referenced crosses a 64k boundary, then an extra
3559 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3560 . addis %r12,%r2,xxx@toc@ha
3562 . ld %r11,xxx+0@toc@l(%r12)
3564 . ld %r2,xxx+8@toc@l(%r12)
3565 . ld %r11,xxx+16@toc@l(%r12)
3568 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3569 code to adjust the value and save r2 to support multiple toc sections.
3570 A ppc_stub_long_branch with an r2 offset looks like:
3572 . addis %r2,%r2,off@ha
3573 . addi %r2,%r2,off@l
3576 A ppc_stub_plt_branch with an r2 offset looks like:
3578 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx@toc@l(%r12)
3580 . addis %r2,%r2,off@ha
3581 . addi %r2,%r2,off@l
3585 In cases where the "addis" instruction would add zero, the "addis" is
3586 omitted and following instructions modified slightly in some cases.
3589 enum ppc_stub_type {
3591 ppc_stub_long_branch,
3592 ppc_stub_long_branch_r2off,
3593 ppc_stub_plt_branch,
3594 ppc_stub_plt_branch_r2off,
3596 ppc_stub_plt_call_r2save
3599 struct ppc_stub_hash_entry {
3601 /* Base hash table entry structure. */
3602 struct bfd_hash_entry root;
3604 enum ppc_stub_type stub_type;
3606 /* The stub section. */
3609 /* Offset within stub_sec of the beginning of this stub. */
3610 bfd_vma stub_offset;
3612 /* Given the symbol's value and its section we can determine its final
3613 value when building the stubs (so the stub knows where to jump. */
3614 bfd_vma target_value;
3615 asection *target_section;
3617 /* The symbol table entry, if any, that this was derived from. */
3618 struct ppc_link_hash_entry *h;
3619 struct plt_entry *plt_ent;
3621 /* And the reloc addend that this was derived from. */
3624 /* Where this stub is being called from, or, in the case of combined
3625 stub sections, the first input section in the group. */
3629 struct ppc_branch_hash_entry {
3631 /* Base hash table entry structure. */
3632 struct bfd_hash_entry root;
3634 /* Offset within branch lookup table. */
3635 unsigned int offset;
3637 /* Generation marker. */
3641 struct ppc_link_hash_entry
3643 struct elf_link_hash_entry elf;
3646 /* A pointer to the most recently used stub hash entry against this
3648 struct ppc_stub_hash_entry *stub_cache;
3650 /* A pointer to the next symbol starting with a '.' */
3651 struct ppc_link_hash_entry *next_dot_sym;
3654 /* Track dynamic relocs copied for this symbol. */
3655 struct elf_dyn_relocs *dyn_relocs;
3657 /* Link between function code and descriptor symbols. */
3658 struct ppc_link_hash_entry *oh;
3660 /* Flag function code and descriptor symbols. */
3661 unsigned int is_func:1;
3662 unsigned int is_func_descriptor:1;
3663 unsigned int fake:1;
3665 /* Whether global opd/toc sym has been adjusted or not.
3666 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3667 should be set for all globals defined in any opd/toc section. */
3668 unsigned int adjust_done:1;
3670 /* Set if we twiddled this symbol to weak at some stage. */
3671 unsigned int was_undefined:1;
3673 /* Contexts in which symbol is used in the GOT (or TOC).
3674 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3675 corresponding relocs are encountered during check_relocs.
3676 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3677 indicate the corresponding GOT entry type is not needed.
3678 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3679 a TPREL one. We use a separate flag rather than setting TPREL
3680 just for convenience in distinguishing the two cases. */
3681 #define TLS_GD 1 /* GD reloc. */
3682 #define TLS_LD 2 /* LD reloc. */
3683 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3684 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3685 #define TLS_TLS 16 /* Any TLS reloc. */
3686 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3687 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3688 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3689 unsigned char tls_mask;
3692 /* ppc64 ELF linker hash table. */
3694 struct ppc_link_hash_table
3696 struct elf_link_hash_table elf;
3698 /* The stub hash table. */
3699 struct bfd_hash_table stub_hash_table;
3701 /* Another hash table for plt_branch stubs. */
3702 struct bfd_hash_table branch_hash_table;
3704 /* Hash table for function prologue tocsave. */
3705 htab_t tocsave_htab;
3707 /* Linker stub bfd. */
3710 /* Linker call-backs. */
3711 asection * (*add_stub_section) (const char *, asection *);
3712 void (*layout_sections_again) (void);
3714 /* Array to keep track of which stub sections have been created, and
3715 information on stub grouping. */
3717 /* This is the section to which stubs in the group will be attached. */
3719 /* The stub section. */
3721 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3725 /* Temp used when calculating TOC pointers. */
3728 asection *toc_first_sec;
3730 /* Highest input section id. */
3733 /* Highest output section index. */
3736 /* Used when adding symbols. */
3737 struct ppc_link_hash_entry *dot_syms;
3739 /* List of input sections for each output section. */
3740 asection **input_list;
3742 /* Short-cuts to get to dynamic linker sections. */
3754 asection *glink_eh_frame;
3756 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3757 struct ppc_link_hash_entry *tls_get_addr;
3758 struct ppc_link_hash_entry *tls_get_addr_fd;
3760 /* The size of reliplt used by got entry relocs. */
3761 bfd_size_type got_reli_size;
3764 unsigned long stub_count[ppc_stub_plt_call_r2save];
3766 /* Number of stubs against global syms. */
3767 unsigned long stub_globals;
3769 /* Alignment of PLT call stubs. */
3770 unsigned int plt_stub_align:4;
3772 /* Set if PLT call stubs should load r11. */
3773 unsigned int plt_static_chain:1;
3775 /* Set if PLT call stubs need a read-read barrier. */
3776 unsigned int plt_thread_safe:1;
3778 /* Set if we should emit symbols for stubs. */
3779 unsigned int emit_stub_syms:1;
3781 /* Set if __tls_get_addr optimization should not be done. */
3782 unsigned int no_tls_get_addr_opt:1;
3784 /* Support for multiple toc sections. */
3785 unsigned int do_multi_toc:1;
3786 unsigned int multi_toc_needed:1;
3787 unsigned int second_toc_pass:1;
3788 unsigned int do_toc_opt:1;
3791 unsigned int stub_error:1;
3793 /* Temp used by ppc64_elf_process_dot_syms. */
3794 unsigned int twiddled_syms:1;
3796 /* Incremented every time we size stubs. */
3797 unsigned int stub_iteration;
3799 /* Small local sym cache. */
3800 struct sym_cache sym_cache;
3803 /* Rename some of the generic section flags to better document how they
3806 /* Nonzero if this section has TLS related relocations. */
3807 #define has_tls_reloc sec_flg0
3809 /* Nonzero if this section has a call to __tls_get_addr. */
3810 #define has_tls_get_addr_call sec_flg1
3812 /* Nonzero if this section has any toc or got relocs. */
3813 #define has_toc_reloc sec_flg2
3815 /* Nonzero if this section has a call to another section that uses
3817 #define makes_toc_func_call sec_flg3
3819 /* Recursion protection when determining above flag. */
3820 #define call_check_in_progress sec_flg4
3821 #define call_check_done sec_flg5
3823 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3825 #define ppc_hash_table(p) \
3826 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3827 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3829 #define ppc_stub_hash_lookup(table, string, create, copy) \
3830 ((struct ppc_stub_hash_entry *) \
3831 bfd_hash_lookup ((table), (string), (create), (copy)))
3833 #define ppc_branch_hash_lookup(table, string, create, copy) \
3834 ((struct ppc_branch_hash_entry *) \
3835 bfd_hash_lookup ((table), (string), (create), (copy)))
3837 /* Create an entry in the stub hash table. */
3839 static struct bfd_hash_entry *
3840 stub_hash_newfunc (struct bfd_hash_entry *entry,
3841 struct bfd_hash_table *table,
3844 /* Allocate the structure if it has not already been allocated by a
3848 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3853 /* Call the allocation method of the superclass. */
3854 entry = bfd_hash_newfunc (entry, table, string);
3857 struct ppc_stub_hash_entry *eh;
3859 /* Initialize the local fields. */
3860 eh = (struct ppc_stub_hash_entry *) entry;
3861 eh->stub_type = ppc_stub_none;
3862 eh->stub_sec = NULL;
3863 eh->stub_offset = 0;
3864 eh->target_value = 0;
3865 eh->target_section = NULL;
3873 /* Create an entry in the branch hash table. */
3875 static struct bfd_hash_entry *
3876 branch_hash_newfunc (struct bfd_hash_entry *entry,
3877 struct bfd_hash_table *table,
3880 /* Allocate the structure if it has not already been allocated by a
3884 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3889 /* Call the allocation method of the superclass. */
3890 entry = bfd_hash_newfunc (entry, table, string);
3893 struct ppc_branch_hash_entry *eh;
3895 /* Initialize the local fields. */
3896 eh = (struct ppc_branch_hash_entry *) entry;
3904 /* Create an entry in a ppc64 ELF linker hash table. */
3906 static struct bfd_hash_entry *
3907 link_hash_newfunc (struct bfd_hash_entry *entry,
3908 struct bfd_hash_table *table,
3911 /* Allocate the structure if it has not already been allocated by a
3915 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3920 /* Call the allocation method of the superclass. */
3921 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3924 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3926 memset (&eh->u.stub_cache, 0,
3927 (sizeof (struct ppc_link_hash_entry)
3928 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3930 /* When making function calls, old ABI code references function entry
3931 points (dot symbols), while new ABI code references the function
3932 descriptor symbol. We need to make any combination of reference and
3933 definition work together, without breaking archive linking.
3935 For a defined function "foo" and an undefined call to "bar":
3936 An old object defines "foo" and ".foo", references ".bar" (possibly
3938 A new object defines "foo" and references "bar".
3940 A new object thus has no problem with its undefined symbols being
3941 satisfied by definitions in an old object. On the other hand, the
3942 old object won't have ".bar" satisfied by a new object.
3944 Keep a list of newly added dot-symbols. */
3946 if (string[0] == '.')
3948 struct ppc_link_hash_table *htab;
3950 htab = (struct ppc_link_hash_table *) table;
3951 eh->u.next_dot_sym = htab->dot_syms;
3952 htab->dot_syms = eh;
3959 struct tocsave_entry {
3965 tocsave_htab_hash (const void *p)
3967 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
3968 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
3972 tocsave_htab_eq (const void *p1, const void *p2)
3974 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
3975 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
3976 return e1->sec == e2->sec && e1->offset == e2->offset;
3979 /* Create a ppc64 ELF linker hash table. */
3981 static struct bfd_link_hash_table *
3982 ppc64_elf_link_hash_table_create (bfd *abfd)
3984 struct ppc_link_hash_table *htab;
3985 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3987 htab = bfd_zmalloc (amt);
3991 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3992 sizeof (struct ppc_link_hash_entry),
3999 /* Init the stub hash table too. */
4000 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4001 sizeof (struct ppc_stub_hash_entry)))
4004 /* And the branch hash table. */
4005 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4006 sizeof (struct ppc_branch_hash_entry)))
4009 htab->tocsave_htab = htab_try_create (1024,
4013 if (htab->tocsave_htab == NULL)
4016 /* Initializing two fields of the union is just cosmetic. We really
4017 only care about glist, but when compiled on a 32-bit host the
4018 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4019 debugger inspection of these fields look nicer. */
4020 htab->elf.init_got_refcount.refcount = 0;
4021 htab->elf.init_got_refcount.glist = NULL;
4022 htab->elf.init_plt_refcount.refcount = 0;
4023 htab->elf.init_plt_refcount.glist = NULL;
4024 htab->elf.init_got_offset.offset = 0;
4025 htab->elf.init_got_offset.glist = NULL;
4026 htab->elf.init_plt_offset.offset = 0;
4027 htab->elf.init_plt_offset.glist = NULL;
4029 return &htab->elf.root;
4032 /* Free the derived linker hash table. */
4035 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4037 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4039 bfd_hash_table_free (&htab->stub_hash_table);
4040 bfd_hash_table_free (&htab->branch_hash_table);
4041 if (htab->tocsave_htab)
4042 htab_delete (htab->tocsave_htab);
4043 _bfd_generic_link_hash_table_free (hash);
4046 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4049 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4051 struct ppc_link_hash_table *htab;
4053 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4055 /* Always hook our dynamic sections into the first bfd, which is the
4056 linker created stub bfd. This ensures that the GOT header is at
4057 the start of the output TOC section. */
4058 htab = ppc_hash_table (info);
4061 htab->stub_bfd = abfd;
4062 htab->elf.dynobj = abfd;
4065 /* Build a name for an entry in the stub hash table. */
4068 ppc_stub_name (const asection *input_section,
4069 const asection *sym_sec,
4070 const struct ppc_link_hash_entry *h,
4071 const Elf_Internal_Rela *rel)
4076 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4077 offsets from a sym as a branch target? In fact, we could
4078 probably assume the addend is always zero. */
4079 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4083 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4084 stub_name = bfd_malloc (len);
4085 if (stub_name == NULL)
4088 sprintf (stub_name, "%08x.%s+%x",
4089 input_section->id & 0xffffffff,
4090 h->elf.root.root.string,
4091 (int) rel->r_addend & 0xffffffff);
4095 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4096 stub_name = bfd_malloc (len);
4097 if (stub_name == NULL)
4100 sprintf (stub_name, "%08x.%x:%x+%x",
4101 input_section->id & 0xffffffff,
4102 sym_sec->id & 0xffffffff,
4103 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4104 (int) rel->r_addend & 0xffffffff);
4106 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4107 stub_name[len - 2] = 0;
4111 /* Look up an entry in the stub hash. Stub entries are cached because
4112 creating the stub name takes a bit of time. */
4114 static struct ppc_stub_hash_entry *
4115 ppc_get_stub_entry (const asection *input_section,
4116 const asection *sym_sec,
4117 struct ppc_link_hash_entry *h,
4118 const Elf_Internal_Rela *rel,
4119 struct ppc_link_hash_table *htab)
4121 struct ppc_stub_hash_entry *stub_entry;
4122 const asection *id_sec;
4124 /* If this input section is part of a group of sections sharing one
4125 stub section, then use the id of the first section in the group.
4126 Stub names need to include a section id, as there may well be
4127 more than one stub used to reach say, printf, and we need to
4128 distinguish between them. */
4129 id_sec = htab->stub_group[input_section->id].link_sec;
4131 if (h != NULL && h->u.stub_cache != NULL
4132 && h->u.stub_cache->h == h
4133 && h->u.stub_cache->id_sec == id_sec)
4135 stub_entry = h->u.stub_cache;
4141 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4142 if (stub_name == NULL)
4145 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4146 stub_name, FALSE, FALSE);
4148 h->u.stub_cache = stub_entry;
4156 /* Add a new stub entry to the stub hash. Not all fields of the new
4157 stub entry are initialised. */
4159 static struct ppc_stub_hash_entry *
4160 ppc_add_stub (const char *stub_name,
4162 struct bfd_link_info *info)
4164 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4167 struct ppc_stub_hash_entry *stub_entry;
4169 link_sec = htab->stub_group[section->id].link_sec;
4170 stub_sec = htab->stub_group[section->id].stub_sec;
4171 if (stub_sec == NULL)
4173 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4174 if (stub_sec == NULL)
4180 namelen = strlen (link_sec->name);
4181 len = namelen + sizeof (STUB_SUFFIX);
4182 s_name = bfd_alloc (htab->stub_bfd, len);
4186 memcpy (s_name, link_sec->name, namelen);
4187 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4188 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4189 if (stub_sec == NULL)
4191 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4193 htab->stub_group[section->id].stub_sec = stub_sec;
4196 /* Enter this entry into the linker stub hash table. */
4197 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4199 if (stub_entry == NULL)
4201 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4202 section->owner, stub_name);
4206 stub_entry->stub_sec = stub_sec;
4207 stub_entry->stub_offset = 0;
4208 stub_entry->id_sec = link_sec;
4212 /* Create sections for linker generated code. */
4215 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4217 struct ppc_link_hash_table *htab;
4220 htab = ppc_hash_table (info);
4224 /* Create .sfpr for code to save and restore fp regs. */
4225 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4226 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4227 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4229 if (htab->sfpr == NULL
4230 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4233 /* Create .glink for lazy dynamic linking support. */
4234 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4236 if (htab->glink == NULL
4237 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4240 if (!info->no_ld_generated_unwind_info)
4242 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4243 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4244 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4247 if (htab->glink_eh_frame == NULL
4248 || !bfd_set_section_alignment (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,
5527 bfd *opd_bfd = opd_sec->owner;
5528 Elf_Internal_Rela *relocs;
5529 Elf_Internal_Rela *lo, *hi, *look;
5532 /* No relocs implies we are linking a --just-symbols object, or looking
5533 at a final linked executable with addr2line or somesuch. */
5534 if (opd_sec->reloc_count == 0)
5536 static asection *last_opd_sec, *last_code_sec;
5537 static bfd_vma last_opd_off, last_entry_vma;
5538 static bfd_boolean sec_search_done;
5540 if (last_opd_sec != opd_sec
5541 || last_opd_off != offset
5542 || (code_sec != NULL && !sec_search_done))
5546 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5547 return (bfd_vma) -1;
5549 last_opd_sec = opd_sec;
5550 last_opd_off = offset;
5551 last_entry_vma = bfd_get_64 (opd_bfd, buf);
5552 sec_search_done = FALSE;
5553 if (code_sec != NULL)
5557 sec_search_done = TRUE;
5558 last_code_sec = NULL;
5559 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5560 if (sec->vma <= last_entry_vma
5561 && (sec->flags & SEC_LOAD) != 0
5562 && (sec->flags & SEC_ALLOC) != 0)
5563 last_code_sec = sec;
5566 if (code_sec != NULL && last_code_sec != NULL)
5568 *code_sec = last_code_sec;
5569 if (code_off != NULL)
5570 *code_off = last_entry_vma - last_code_sec->vma;
5572 return last_entry_vma;
5575 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5577 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5579 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5581 /* Go find the opd reloc at the sym address. */
5583 BFD_ASSERT (lo != NULL);
5584 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5588 look = lo + (hi - lo) / 2;
5589 if (look->r_offset < offset)
5591 else if (look->r_offset > offset)
5595 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5597 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5598 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5600 unsigned long symndx = ELF64_R_SYM (look->r_info);
5603 if (symndx < symtab_hdr->sh_info
5604 || elf_sym_hashes (opd_bfd) == NULL)
5606 Elf_Internal_Sym *sym;
5608 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5611 size_t symcnt = symtab_hdr->sh_info;
5612 if (elf_sym_hashes (opd_bfd) == NULL)
5613 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5614 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5615 0, NULL, NULL, NULL);
5618 symtab_hdr->contents = (bfd_byte *) sym;
5622 val = sym->st_value;
5623 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5624 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5628 struct elf_link_hash_entry **sym_hashes;
5629 struct elf_link_hash_entry *rh;
5631 sym_hashes = elf_sym_hashes (opd_bfd);
5632 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5633 rh = elf_follow_link (rh);
5634 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5635 || rh->root.type == bfd_link_hash_defweak);
5636 val = rh->root.u.def.value;
5637 sec = rh->root.u.def.section;
5639 val += look->r_addend;
5640 if (code_off != NULL)
5642 if (code_sec != NULL)
5644 if (sec != NULL && sec->output_section != NULL)
5645 val += sec->output_section->vma + sec->output_offset;
5654 /* Return TRUE iff the ELF symbol SYM might be a function. Set *CODE_SEC
5655 and *CODE_OFF to the function's entry point. */
5658 ppc64_elf_maybe_function_sym (const asymbol *sym,
5659 asection **code_sec, bfd_vma *code_off)
5661 if (_bfd_elf_maybe_function_sym (sym, code_sec, code_off))
5663 if (strcmp (sym->section->name, ".opd") == 0)
5664 opd_entry_value (sym->section, sym->value, code_sec, code_off);
5670 /* Return true if symbol is defined in a regular object file. */
5673 is_static_defined (struct elf_link_hash_entry *h)
5675 return ((h->root.type == bfd_link_hash_defined
5676 || h->root.type == bfd_link_hash_defweak)
5677 && h->root.u.def.section != NULL
5678 && h->root.u.def.section->output_section != NULL);
5681 /* If FDH is a function descriptor symbol, return the associated code
5682 entry symbol if it is defined. Return NULL otherwise. */
5684 static struct ppc_link_hash_entry *
5685 defined_code_entry (struct ppc_link_hash_entry *fdh)
5687 if (fdh->is_func_descriptor)
5689 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5690 if (fh->elf.root.type == bfd_link_hash_defined
5691 || fh->elf.root.type == bfd_link_hash_defweak)
5697 /* If FH is a function code entry symbol, return the associated
5698 function descriptor symbol if it is defined. Return NULL otherwise. */
5700 static struct ppc_link_hash_entry *
5701 defined_func_desc (struct ppc_link_hash_entry *fh)
5704 && fh->oh->is_func_descriptor)
5706 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5707 if (fdh->elf.root.type == bfd_link_hash_defined
5708 || fdh->elf.root.type == bfd_link_hash_defweak)
5714 /* Mark all our entry sym sections, both opd and code section. */
5717 ppc64_elf_gc_keep (struct bfd_link_info *info)
5719 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5720 struct bfd_sym_chain *sym;
5725 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5727 struct ppc_link_hash_entry *eh, *fh;
5730 eh = (struct ppc_link_hash_entry *)
5731 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5734 if (eh->elf.root.type != bfd_link_hash_defined
5735 && eh->elf.root.type != bfd_link_hash_defweak)
5738 fh = defined_code_entry (eh);
5741 sec = fh->elf.root.u.def.section;
5742 sec->flags |= SEC_KEEP;
5744 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5745 && opd_entry_value (eh->elf.root.u.def.section,
5746 eh->elf.root.u.def.value,
5747 &sec, NULL) != (bfd_vma) -1)
5748 sec->flags |= SEC_KEEP;
5750 sec = eh->elf.root.u.def.section;
5751 sec->flags |= SEC_KEEP;
5755 /* Mark sections containing dynamically referenced symbols. When
5756 building shared libraries, we must assume that any visible symbol is
5760 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5762 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5763 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5764 struct ppc_link_hash_entry *fdh;
5766 /* Dynamic linking info is on the func descriptor sym. */
5767 fdh = defined_func_desc (eh);
5771 if ((eh->elf.root.type == bfd_link_hash_defined
5772 || eh->elf.root.type == bfd_link_hash_defweak)
5773 && (eh->elf.ref_dynamic
5774 || (!info->executable
5775 && eh->elf.def_regular
5776 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5777 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
5778 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
5779 || !bfd_hide_sym_by_version (info->version_info,
5780 eh->elf.root.root.string)))))
5783 struct ppc_link_hash_entry *fh;
5785 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5787 /* Function descriptor syms cause the associated
5788 function code sym section to be marked. */
5789 fh = defined_code_entry (eh);
5792 code_sec = fh->elf.root.u.def.section;
5793 code_sec->flags |= SEC_KEEP;
5795 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5796 && opd_entry_value (eh->elf.root.u.def.section,
5797 eh->elf.root.u.def.value,
5798 &code_sec, NULL) != (bfd_vma) -1)
5799 code_sec->flags |= SEC_KEEP;
5805 /* Return the section that should be marked against GC for a given
5809 ppc64_elf_gc_mark_hook (asection *sec,
5810 struct bfd_link_info *info,
5811 Elf_Internal_Rela *rel,
5812 struct elf_link_hash_entry *h,
5813 Elf_Internal_Sym *sym)
5817 /* Syms return NULL if we're marking .opd, so we avoid marking all
5818 function sections, as all functions are referenced in .opd. */
5820 if (get_opd_info (sec) != NULL)
5825 enum elf_ppc64_reloc_type r_type;
5826 struct ppc_link_hash_entry *eh, *fh, *fdh;
5828 r_type = ELF64_R_TYPE (rel->r_info);
5831 case R_PPC64_GNU_VTINHERIT:
5832 case R_PPC64_GNU_VTENTRY:
5836 switch (h->root.type)
5838 case bfd_link_hash_defined:
5839 case bfd_link_hash_defweak:
5840 eh = (struct ppc_link_hash_entry *) h;
5841 fdh = defined_func_desc (eh);
5845 /* Function descriptor syms cause the associated
5846 function code sym section to be marked. */
5847 fh = defined_code_entry (eh);
5850 /* They also mark their opd section. */
5851 eh->elf.root.u.def.section->gc_mark = 1;
5853 rsec = fh->elf.root.u.def.section;
5855 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5856 && opd_entry_value (eh->elf.root.u.def.section,
5857 eh->elf.root.u.def.value,
5858 &rsec, NULL) != (bfd_vma) -1)
5859 eh->elf.root.u.def.section->gc_mark = 1;
5861 rsec = h->root.u.def.section;
5864 case bfd_link_hash_common:
5865 rsec = h->root.u.c.p->section;
5869 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5875 struct _opd_sec_data *opd;
5877 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5878 opd = get_opd_info (rsec);
5879 if (opd != NULL && opd->func_sec != NULL)
5883 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5890 /* Update the .got, .plt. and dynamic reloc reference counts for the
5891 section being removed. */
5894 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5895 asection *sec, const Elf_Internal_Rela *relocs)
5897 struct ppc_link_hash_table *htab;
5898 Elf_Internal_Shdr *symtab_hdr;
5899 struct elf_link_hash_entry **sym_hashes;
5900 struct got_entry **local_got_ents;
5901 const Elf_Internal_Rela *rel, *relend;
5903 if (info->relocatable)
5906 if ((sec->flags & SEC_ALLOC) == 0)
5909 elf_section_data (sec)->local_dynrel = NULL;
5911 htab = ppc_hash_table (info);
5915 symtab_hdr = &elf_symtab_hdr (abfd);
5916 sym_hashes = elf_sym_hashes (abfd);
5917 local_got_ents = elf_local_got_ents (abfd);
5919 relend = relocs + sec->reloc_count;
5920 for (rel = relocs; rel < relend; rel++)
5922 unsigned long r_symndx;
5923 enum elf_ppc64_reloc_type r_type;
5924 struct elf_link_hash_entry *h = NULL;
5925 unsigned char tls_type = 0;
5927 r_symndx = ELF64_R_SYM (rel->r_info);
5928 r_type = ELF64_R_TYPE (rel->r_info);
5929 if (r_symndx >= symtab_hdr->sh_info)
5931 struct ppc_link_hash_entry *eh;
5932 struct elf_dyn_relocs **pp;
5933 struct elf_dyn_relocs *p;
5935 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5936 h = elf_follow_link (h);
5937 eh = (struct ppc_link_hash_entry *) h;
5939 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5942 /* Everything must go for SEC. */
5948 if (is_branch_reloc (r_type))
5950 struct plt_entry **ifunc = NULL;
5953 if (h->type == STT_GNU_IFUNC)
5954 ifunc = &h->plt.plist;
5956 else if (local_got_ents != NULL)
5958 struct plt_entry **local_plt = (struct plt_entry **)
5959 (local_got_ents + symtab_hdr->sh_info);
5960 unsigned char *local_got_tls_masks = (unsigned char *)
5961 (local_plt + symtab_hdr->sh_info);
5962 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5963 ifunc = local_plt + r_symndx;
5967 struct plt_entry *ent;
5969 for (ent = *ifunc; ent != NULL; ent = ent->next)
5970 if (ent->addend == rel->r_addend)
5974 if (ent->plt.refcount > 0)
5975 ent->plt.refcount -= 1;
5982 case R_PPC64_GOT_TLSLD16:
5983 case R_PPC64_GOT_TLSLD16_LO:
5984 case R_PPC64_GOT_TLSLD16_HI:
5985 case R_PPC64_GOT_TLSLD16_HA:
5986 tls_type = TLS_TLS | TLS_LD;
5989 case R_PPC64_GOT_TLSGD16:
5990 case R_PPC64_GOT_TLSGD16_LO:
5991 case R_PPC64_GOT_TLSGD16_HI:
5992 case R_PPC64_GOT_TLSGD16_HA:
5993 tls_type = TLS_TLS | TLS_GD;
5996 case R_PPC64_GOT_TPREL16_DS:
5997 case R_PPC64_GOT_TPREL16_LO_DS:
5998 case R_PPC64_GOT_TPREL16_HI:
5999 case R_PPC64_GOT_TPREL16_HA:
6000 tls_type = TLS_TLS | TLS_TPREL;
6003 case R_PPC64_GOT_DTPREL16_DS:
6004 case R_PPC64_GOT_DTPREL16_LO_DS:
6005 case R_PPC64_GOT_DTPREL16_HI:
6006 case R_PPC64_GOT_DTPREL16_HA:
6007 tls_type = TLS_TLS | TLS_DTPREL;
6011 case R_PPC64_GOT16_DS:
6012 case R_PPC64_GOT16_HA:
6013 case R_PPC64_GOT16_HI:
6014 case R_PPC64_GOT16_LO:
6015 case R_PPC64_GOT16_LO_DS:
6018 struct got_entry *ent;
6023 ent = local_got_ents[r_symndx];
6025 for (; ent != NULL; ent = ent->next)
6026 if (ent->addend == rel->r_addend
6027 && ent->owner == abfd
6028 && ent->tls_type == tls_type)
6032 if (ent->got.refcount > 0)
6033 ent->got.refcount -= 1;
6037 case R_PPC64_PLT16_HA:
6038 case R_PPC64_PLT16_HI:
6039 case R_PPC64_PLT16_LO:
6043 case R_PPC64_REL14_BRNTAKEN:
6044 case R_PPC64_REL14_BRTAKEN:
6048 struct plt_entry *ent;
6050 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6051 if (ent->addend == rel->r_addend)
6053 if (ent != NULL && ent->plt.refcount > 0)
6054 ent->plt.refcount -= 1;
6065 /* The maximum size of .sfpr. */
6066 #define SFPR_MAX (218*4)
6068 struct sfpr_def_parms
6070 const char name[12];
6071 unsigned char lo, hi;
6072 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6073 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6076 /* Auto-generate _save*, _rest* functions in .sfpr. */
6079 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6081 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6083 size_t len = strlen (parm->name);
6084 bfd_boolean writing = FALSE;
6090 memcpy (sym, parm->name, len);
6093 for (i = parm->lo; i <= parm->hi; i++)
6095 struct elf_link_hash_entry *h;
6097 sym[len + 0] = i / 10 + '0';
6098 sym[len + 1] = i % 10 + '0';
6099 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6103 h->root.type = bfd_link_hash_defined;
6104 h->root.u.def.section = htab->sfpr;
6105 h->root.u.def.value = htab->sfpr->size;
6108 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6110 if (htab->sfpr->contents == NULL)
6112 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6113 if (htab->sfpr->contents == NULL)
6119 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6121 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6123 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6124 htab->sfpr->size = p - htab->sfpr->contents;
6132 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6134 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6139 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6141 p = savegpr0 (abfd, p, r);
6142 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6144 bfd_put_32 (abfd, BLR, p);
6149 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6151 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6156 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6158 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6160 p = restgpr0 (abfd, p, r);
6161 bfd_put_32 (abfd, MTLR_R0, p);
6165 p = restgpr0 (abfd, p, 30);
6166 p = restgpr0 (abfd, p, 31);
6168 bfd_put_32 (abfd, BLR, p);
6173 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6175 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6180 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6182 p = savegpr1 (abfd, p, r);
6183 bfd_put_32 (abfd, BLR, p);
6188 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6190 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6195 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6197 p = restgpr1 (abfd, p, r);
6198 bfd_put_32 (abfd, BLR, p);
6203 savefpr (bfd *abfd, bfd_byte *p, int r)
6205 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6210 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6212 p = savefpr (abfd, p, r);
6213 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6215 bfd_put_32 (abfd, BLR, p);
6220 restfpr (bfd *abfd, bfd_byte *p, int r)
6222 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6227 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6229 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6231 p = restfpr (abfd, p, r);
6232 bfd_put_32 (abfd, MTLR_R0, p);
6236 p = restfpr (abfd, p, 30);
6237 p = restfpr (abfd, p, 31);
6239 bfd_put_32 (abfd, BLR, p);
6244 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6246 p = savefpr (abfd, p, r);
6247 bfd_put_32 (abfd, BLR, p);
6252 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6254 p = restfpr (abfd, p, r);
6255 bfd_put_32 (abfd, BLR, p);
6260 savevr (bfd *abfd, bfd_byte *p, int r)
6262 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6264 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6269 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6271 p = savevr (abfd, p, r);
6272 bfd_put_32 (abfd, BLR, p);
6277 restvr (bfd *abfd, bfd_byte *p, int r)
6279 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6281 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6286 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6288 p = restvr (abfd, p, r);
6289 bfd_put_32 (abfd, BLR, p);
6293 /* Called via elf_link_hash_traverse to transfer dynamic linking
6294 information on function code symbol entries to their corresponding
6295 function descriptor symbol entries. */
6298 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6300 struct bfd_link_info *info;
6301 struct ppc_link_hash_table *htab;
6302 struct plt_entry *ent;
6303 struct ppc_link_hash_entry *fh;
6304 struct ppc_link_hash_entry *fdh;
6305 bfd_boolean force_local;
6307 fh = (struct ppc_link_hash_entry *) h;
6308 if (fh->elf.root.type == bfd_link_hash_indirect)
6312 htab = ppc_hash_table (info);
6316 /* Resolve undefined references to dot-symbols as the value
6317 in the function descriptor, if we have one in a regular object.
6318 This is to satisfy cases like ".quad .foo". Calls to functions
6319 in dynamic objects are handled elsewhere. */
6320 if (fh->elf.root.type == bfd_link_hash_undefweak
6321 && fh->was_undefined
6322 && (fdh = defined_func_desc (fh)) != NULL
6323 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6324 && opd_entry_value (fdh->elf.root.u.def.section,
6325 fdh->elf.root.u.def.value,
6326 &fh->elf.root.u.def.section,
6327 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6329 fh->elf.root.type = fdh->elf.root.type;
6330 fh->elf.forced_local = 1;
6331 fh->elf.def_regular = fdh->elf.def_regular;
6332 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6335 /* If this is a function code symbol, transfer dynamic linking
6336 information to the function descriptor symbol. */
6340 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6341 if (ent->plt.refcount > 0)
6344 || fh->elf.root.root.string[0] != '.'
6345 || fh->elf.root.root.string[1] == '\0')
6348 /* Find the corresponding function descriptor symbol. Create it
6349 as undefined if necessary. */
6351 fdh = lookup_fdh (fh, htab);
6353 && !info->executable
6354 && (fh->elf.root.type == bfd_link_hash_undefined
6355 || fh->elf.root.type == bfd_link_hash_undefweak))
6357 fdh = make_fdh (info, fh);
6362 /* Fake function descriptors are made undefweak. If the function
6363 code symbol is strong undefined, make the fake sym the same.
6364 If the function code symbol is defined, then force the fake
6365 descriptor local; We can't support overriding of symbols in a
6366 shared library on a fake descriptor. */
6370 && fdh->elf.root.type == bfd_link_hash_undefweak)
6372 if (fh->elf.root.type == bfd_link_hash_undefined)
6374 fdh->elf.root.type = bfd_link_hash_undefined;
6375 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6377 else if (fh->elf.root.type == bfd_link_hash_defined
6378 || fh->elf.root.type == bfd_link_hash_defweak)
6380 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6385 && !fdh->elf.forced_local
6386 && (!info->executable
6387 || fdh->elf.def_dynamic
6388 || fdh->elf.ref_dynamic
6389 || (fdh->elf.root.type == bfd_link_hash_undefweak
6390 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6392 if (fdh->elf.dynindx == -1)
6393 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6395 fdh->elf.ref_regular |= fh->elf.ref_regular;
6396 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6397 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6398 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6399 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6401 move_plt_plist (fh, fdh);
6402 fdh->elf.needs_plt = 1;
6404 fdh->is_func_descriptor = 1;
6409 /* Now that the info is on the function descriptor, clear the
6410 function code sym info. Any function code syms for which we
6411 don't have a definition in a regular file, we force local.
6412 This prevents a shared library from exporting syms that have
6413 been imported from another library. Function code syms that
6414 are really in the library we must leave global to prevent the
6415 linker dragging in a definition from a static library. */
6416 force_local = (!fh->elf.def_regular
6418 || !fdh->elf.def_regular
6419 || fdh->elf.forced_local);
6420 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6425 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6426 this hook to a) provide some gcc support functions, and b) transfer
6427 dynamic linking information gathered so far on function code symbol
6428 entries, to their corresponding function descriptor symbol entries. */
6431 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6432 struct bfd_link_info *info)
6434 struct ppc_link_hash_table *htab;
6436 const struct sfpr_def_parms funcs[] =
6438 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6439 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6440 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6441 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6442 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6443 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6444 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6445 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6446 { "._savef", 14, 31, savefpr, savefpr1_tail },
6447 { "._restf", 14, 31, restfpr, restfpr1_tail },
6448 { "_savevr_", 20, 31, savevr, savevr_tail },
6449 { "_restvr_", 20, 31, restvr, restvr_tail }
6452 htab = ppc_hash_table (info);
6456 if (htab->sfpr == NULL)
6457 /* We don't have any relocs. */
6460 /* Provide any missing _save* and _rest* functions. */
6461 htab->sfpr->size = 0;
6462 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6463 if (!sfpr_define (info, &funcs[i]))
6466 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6468 if (htab->sfpr->size == 0)
6469 htab->sfpr->flags |= SEC_EXCLUDE;
6474 /* Adjust a symbol defined by a dynamic object and referenced by a
6475 regular object. The current definition is in some section of the
6476 dynamic object, but we're not including those sections. We have to
6477 change the definition to something the rest of the link can
6481 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6482 struct elf_link_hash_entry *h)
6484 struct ppc_link_hash_table *htab;
6487 htab = ppc_hash_table (info);
6491 /* Deal with function syms. */
6492 if (h->type == STT_FUNC
6493 || h->type == STT_GNU_IFUNC
6496 /* Clear procedure linkage table information for any symbol that
6497 won't need a .plt entry. */
6498 struct plt_entry *ent;
6499 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6500 if (ent->plt.refcount > 0)
6503 || (h->type != STT_GNU_IFUNC
6504 && (SYMBOL_CALLS_LOCAL (info, h)
6505 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6506 && h->root.type == bfd_link_hash_undefweak))))
6508 h->plt.plist = NULL;
6513 h->plt.plist = NULL;
6515 /* If this is a weak symbol, and there is a real definition, the
6516 processor independent code will have arranged for us to see the
6517 real definition first, and we can just use the same value. */
6518 if (h->u.weakdef != NULL)
6520 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6521 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6522 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6523 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6524 if (ELIMINATE_COPY_RELOCS)
6525 h->non_got_ref = h->u.weakdef->non_got_ref;
6529 /* If we are creating a shared library, we must presume that the
6530 only references to the symbol are via the global offset table.
6531 For such cases we need not do anything here; the relocations will
6532 be handled correctly by relocate_section. */
6536 /* If there are no references to this symbol that do not use the
6537 GOT, we don't need to generate a copy reloc. */
6538 if (!h->non_got_ref)
6541 /* Don't generate a copy reloc for symbols defined in the executable. */
6542 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6545 if (ELIMINATE_COPY_RELOCS)
6547 struct ppc_link_hash_entry * eh;
6548 struct elf_dyn_relocs *p;
6550 eh = (struct ppc_link_hash_entry *) h;
6551 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6553 s = p->sec->output_section;
6554 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6558 /* If we didn't find any dynamic relocs in read-only sections, then
6559 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6567 if (h->plt.plist != NULL)
6569 /* We should never get here, but unfortunately there are versions
6570 of gcc out there that improperly (for this ABI) put initialized
6571 function pointers, vtable refs and suchlike in read-only
6572 sections. Allow them to proceed, but warn that this might
6573 break at runtime. */
6574 info->callbacks->einfo
6575 (_("%P: copy reloc against `%s' requires lazy plt linking; "
6576 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6577 h->root.root.string);
6580 /* This is a reference to a symbol defined by a dynamic object which
6581 is not a function. */
6583 /* We must allocate the symbol in our .dynbss section, which will
6584 become part of the .bss section of the executable. There will be
6585 an entry for this symbol in the .dynsym section. The dynamic
6586 object will contain position independent code, so all references
6587 from the dynamic object to this symbol will go through the global
6588 offset table. The dynamic linker will use the .dynsym entry to
6589 determine the address it must put in the global offset table, so
6590 both the dynamic object and the regular object will refer to the
6591 same memory location for the variable. */
6593 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6594 to copy the initial value out of the dynamic object and into the
6595 runtime process image. We need to remember the offset into the
6596 .rela.bss section we are going to use. */
6597 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6599 htab->relbss->size += sizeof (Elf64_External_Rela);
6605 return _bfd_elf_adjust_dynamic_copy (h, s);
6608 /* If given a function descriptor symbol, hide both the function code
6609 sym and the descriptor. */
6611 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6612 struct elf_link_hash_entry *h,
6613 bfd_boolean force_local)
6615 struct ppc_link_hash_entry *eh;
6616 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6618 eh = (struct ppc_link_hash_entry *) h;
6619 if (eh->is_func_descriptor)
6621 struct ppc_link_hash_entry *fh = eh->oh;
6626 struct ppc_link_hash_table *htab;
6629 /* We aren't supposed to use alloca in BFD because on
6630 systems which do not have alloca the version in libiberty
6631 calls xmalloc, which might cause the program to crash
6632 when it runs out of memory. This function doesn't have a
6633 return status, so there's no way to gracefully return an
6634 error. So cheat. We know that string[-1] can be safely
6635 accessed; It's either a string in an ELF string table,
6636 or allocated in an objalloc structure. */
6638 p = eh->elf.root.root.string - 1;
6641 htab = ppc_hash_table (info);
6645 fh = (struct ppc_link_hash_entry *)
6646 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6649 /* Unfortunately, if it so happens that the string we were
6650 looking for was allocated immediately before this string,
6651 then we overwrote the string terminator. That's the only
6652 reason the lookup should fail. */
6655 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6656 while (q >= eh->elf.root.root.string && *q == *p)
6658 if (q < eh->elf.root.root.string && *p == '.')
6659 fh = (struct ppc_link_hash_entry *)
6660 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6669 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6674 get_sym_h (struct elf_link_hash_entry **hp,
6675 Elf_Internal_Sym **symp,
6677 unsigned char **tls_maskp,
6678 Elf_Internal_Sym **locsymsp,
6679 unsigned long r_symndx,
6682 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6684 if (r_symndx >= symtab_hdr->sh_info)
6686 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6687 struct elf_link_hash_entry *h;
6689 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6690 h = elf_follow_link (h);
6698 if (symsecp != NULL)
6700 asection *symsec = NULL;
6701 if (h->root.type == bfd_link_hash_defined
6702 || h->root.type == bfd_link_hash_defweak)
6703 symsec = h->root.u.def.section;
6707 if (tls_maskp != NULL)
6709 struct ppc_link_hash_entry *eh;
6711 eh = (struct ppc_link_hash_entry *) h;
6712 *tls_maskp = &eh->tls_mask;
6717 Elf_Internal_Sym *sym;
6718 Elf_Internal_Sym *locsyms = *locsymsp;
6720 if (locsyms == NULL)
6722 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6723 if (locsyms == NULL)
6724 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6725 symtab_hdr->sh_info,
6726 0, NULL, NULL, NULL);
6727 if (locsyms == NULL)
6729 *locsymsp = locsyms;
6731 sym = locsyms + r_symndx;
6739 if (symsecp != NULL)
6740 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6742 if (tls_maskp != NULL)
6744 struct got_entry **lgot_ents;
6745 unsigned char *tls_mask;
6748 lgot_ents = elf_local_got_ents (ibfd);
6749 if (lgot_ents != NULL)
6751 struct plt_entry **local_plt = (struct plt_entry **)
6752 (lgot_ents + symtab_hdr->sh_info);
6753 unsigned char *lgot_masks = (unsigned char *)
6754 (local_plt + symtab_hdr->sh_info);
6755 tls_mask = &lgot_masks[r_symndx];
6757 *tls_maskp = tls_mask;
6763 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6764 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6765 type suitable for optimization, and 1 otherwise. */
6768 get_tls_mask (unsigned char **tls_maskp,
6769 unsigned long *toc_symndx,
6770 bfd_vma *toc_addend,
6771 Elf_Internal_Sym **locsymsp,
6772 const Elf_Internal_Rela *rel,
6775 unsigned long r_symndx;
6777 struct elf_link_hash_entry *h;
6778 Elf_Internal_Sym *sym;
6782 r_symndx = ELF64_R_SYM (rel->r_info);
6783 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6786 if ((*tls_maskp != NULL && **tls_maskp != 0)
6788 || ppc64_elf_section_data (sec) == NULL
6789 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6792 /* Look inside a TOC section too. */
6795 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6796 off = h->root.u.def.value;
6799 off = sym->st_value;
6800 off += rel->r_addend;
6801 BFD_ASSERT (off % 8 == 0);
6802 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6803 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6804 if (toc_symndx != NULL)
6805 *toc_symndx = r_symndx;
6806 if (toc_addend != NULL)
6807 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6808 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6810 if ((h == NULL || is_static_defined (h))
6811 && (next_r == -1 || next_r == -2))
6816 /* Find (or create) an entry in the tocsave hash table. */
6818 static struct tocsave_entry *
6819 tocsave_find (struct ppc_link_hash_table *htab,
6820 enum insert_option insert,
6821 Elf_Internal_Sym **local_syms,
6822 const Elf_Internal_Rela *irela,
6825 unsigned long r_indx;
6826 struct elf_link_hash_entry *h;
6827 Elf_Internal_Sym *sym;
6828 struct tocsave_entry ent, *p;
6830 struct tocsave_entry **slot;
6832 r_indx = ELF64_R_SYM (irela->r_info);
6833 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
6835 if (ent.sec == NULL || ent.sec->output_section == NULL)
6837 (*_bfd_error_handler)
6838 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6843 ent.offset = h->root.u.def.value;
6845 ent.offset = sym->st_value;
6846 ent.offset += irela->r_addend;
6848 hash = tocsave_htab_hash (&ent);
6849 slot = ((struct tocsave_entry **)
6850 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
6856 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
6865 /* Adjust all global syms defined in opd sections. In gcc generated
6866 code for the old ABI, these will already have been done. */
6869 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6871 struct ppc_link_hash_entry *eh;
6873 struct _opd_sec_data *opd;
6875 if (h->root.type == bfd_link_hash_indirect)
6878 if (h->root.type != bfd_link_hash_defined
6879 && h->root.type != bfd_link_hash_defweak)
6882 eh = (struct ppc_link_hash_entry *) h;
6883 if (eh->adjust_done)
6886 sym_sec = eh->elf.root.u.def.section;
6887 opd = get_opd_info (sym_sec);
6888 if (opd != NULL && opd->adjust != NULL)
6890 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6893 /* This entry has been deleted. */
6894 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6897 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6898 if (discarded_section (dsec))
6900 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6904 eh->elf.root.u.def.value = 0;
6905 eh->elf.root.u.def.section = dsec;
6908 eh->elf.root.u.def.value += adjust;
6909 eh->adjust_done = 1;
6914 /* Handles decrementing dynamic reloc counts for the reloc specified by
6915 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6916 have already been determined. */
6919 dec_dynrel_count (bfd_vma r_info,
6921 struct bfd_link_info *info,
6922 Elf_Internal_Sym **local_syms,
6923 struct elf_link_hash_entry *h,
6926 enum elf_ppc64_reloc_type r_type;
6927 struct elf_dyn_relocs *p;
6928 struct elf_dyn_relocs **pp;
6930 /* Can this reloc be dynamic? This switch, and later tests here
6931 should be kept in sync with the code in check_relocs. */
6932 r_type = ELF64_R_TYPE (r_info);
6938 case R_PPC64_TPREL16:
6939 case R_PPC64_TPREL16_LO:
6940 case R_PPC64_TPREL16_HI:
6941 case R_PPC64_TPREL16_HA:
6942 case R_PPC64_TPREL16_DS:
6943 case R_PPC64_TPREL16_LO_DS:
6944 case R_PPC64_TPREL16_HIGHER:
6945 case R_PPC64_TPREL16_HIGHERA:
6946 case R_PPC64_TPREL16_HIGHEST:
6947 case R_PPC64_TPREL16_HIGHESTA:
6951 case R_PPC64_TPREL64:
6952 case R_PPC64_DTPMOD64:
6953 case R_PPC64_DTPREL64:
6954 case R_PPC64_ADDR64:
6958 case R_PPC64_ADDR14:
6959 case R_PPC64_ADDR14_BRNTAKEN:
6960 case R_PPC64_ADDR14_BRTAKEN:
6961 case R_PPC64_ADDR16:
6962 case R_PPC64_ADDR16_DS:
6963 case R_PPC64_ADDR16_HA:
6964 case R_PPC64_ADDR16_HI:
6965 case R_PPC64_ADDR16_HIGHER:
6966 case R_PPC64_ADDR16_HIGHERA:
6967 case R_PPC64_ADDR16_HIGHEST:
6968 case R_PPC64_ADDR16_HIGHESTA:
6969 case R_PPC64_ADDR16_LO:
6970 case R_PPC64_ADDR16_LO_DS:
6971 case R_PPC64_ADDR24:
6972 case R_PPC64_ADDR32:
6973 case R_PPC64_UADDR16:
6974 case R_PPC64_UADDR32:
6975 case R_PPC64_UADDR64:
6980 if (local_syms != NULL)
6982 unsigned long r_symndx;
6983 Elf_Internal_Sym *sym;
6984 bfd *ibfd = sec->owner;
6986 r_symndx = ELF64_R_SYM (r_info);
6987 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6992 && (must_be_dyn_reloc (info, r_type)
6995 || h->root.type == bfd_link_hash_defweak
6996 || !h->def_regular))))
6997 || (ELIMINATE_COPY_RELOCS
7000 && (h->root.type == bfd_link_hash_defweak
7001 || !h->def_regular)))
7007 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7010 if (sym_sec != NULL)
7012 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
7013 pp = (struct elf_dyn_relocs **) vpp;
7017 void *vpp = &elf_section_data (sec)->local_dynrel;
7018 pp = (struct elf_dyn_relocs **) vpp;
7021 /* elf_gc_sweep may have already removed all dyn relocs associated
7022 with local syms for a given section. Don't report a dynreloc
7028 while ((p = *pp) != NULL)
7032 if (!must_be_dyn_reloc (info, r_type))
7042 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7044 bfd_set_error (bfd_error_bad_value);
7048 /* Remove unused Official Procedure Descriptor entries. Currently we
7049 only remove those associated with functions in discarded link-once
7050 sections, or weakly defined functions that have been overridden. It
7051 would be possible to remove many more entries for statically linked
7055 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7058 bfd_boolean some_edited = FALSE;
7059 asection *need_pad = NULL;
7061 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7064 Elf_Internal_Rela *relstart, *rel, *relend;
7065 Elf_Internal_Shdr *symtab_hdr;
7066 Elf_Internal_Sym *local_syms;
7068 struct _opd_sec_data *opd;
7069 bfd_boolean need_edit, add_aux_fields;
7070 bfd_size_type cnt_16b = 0;
7072 if (!is_ppc64_elf (ibfd))
7075 sec = bfd_get_section_by_name (ibfd, ".opd");
7076 if (sec == NULL || sec->size == 0)
7079 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7082 if (sec->output_section == bfd_abs_section_ptr)
7085 /* Look through the section relocs. */
7086 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7090 symtab_hdr = &elf_symtab_hdr (ibfd);
7092 /* Read the relocations. */
7093 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7095 if (relstart == NULL)
7098 /* First run through the relocs to check they are sane, and to
7099 determine whether we need to edit this opd section. */
7103 relend = relstart + sec->reloc_count;
7104 for (rel = relstart; rel < relend; )
7106 enum elf_ppc64_reloc_type r_type;
7107 unsigned long r_symndx;
7109 struct elf_link_hash_entry *h;
7110 Elf_Internal_Sym *sym;
7112 /* .opd contains a regular array of 16 or 24 byte entries. We're
7113 only interested in the reloc pointing to a function entry
7115 if (rel->r_offset != offset
7116 || rel + 1 >= relend
7117 || (rel + 1)->r_offset != offset + 8)
7119 /* If someone messes with .opd alignment then after a
7120 "ld -r" we might have padding in the middle of .opd.
7121 Also, there's nothing to prevent someone putting
7122 something silly in .opd with the assembler. No .opd
7123 optimization for them! */
7125 (*_bfd_error_handler)
7126 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7131 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7132 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7134 (*_bfd_error_handler)
7135 (_("%B: unexpected reloc type %u in .opd section"),
7141 r_symndx = ELF64_R_SYM (rel->r_info);
7142 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7146 if (sym_sec == NULL || sym_sec->owner == NULL)
7148 const char *sym_name;
7150 sym_name = h->root.root.string;
7152 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7155 (*_bfd_error_handler)
7156 (_("%B: undefined sym `%s' in .opd section"),
7162 /* opd entries are always for functions defined in the
7163 current input bfd. If the symbol isn't defined in the
7164 input bfd, then we won't be using the function in this
7165 bfd; It must be defined in a linkonce section in another
7166 bfd, or is weak. It's also possible that we are
7167 discarding the function due to a linker script /DISCARD/,
7168 which we test for via the output_section. */
7169 if (sym_sec->owner != ibfd
7170 || sym_sec->output_section == bfd_abs_section_ptr)
7175 || (rel + 1 == relend && rel->r_offset == offset + 16))
7177 if (sec->size == offset + 24)
7182 if (rel == relend && sec->size == offset + 16)
7190 if (rel->r_offset == offset + 24)
7192 else if (rel->r_offset != offset + 16)
7194 else if (rel + 1 < relend
7195 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7196 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7201 else if (rel + 2 < relend
7202 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7203 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7212 add_aux_fields = non_overlapping && cnt_16b > 0;
7214 if (need_edit || add_aux_fields)
7216 Elf_Internal_Rela *write_rel;
7217 Elf_Internal_Shdr *rel_hdr;
7218 bfd_byte *rptr, *wptr;
7219 bfd_byte *new_contents;
7224 new_contents = NULL;
7225 amt = sec->size * sizeof (long) / 8;
7226 opd = &ppc64_elf_section_data (sec)->u.opd;
7227 opd->adjust = bfd_zalloc (sec->owner, amt);
7228 if (opd->adjust == NULL)
7230 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7232 /* This seems a waste of time as input .opd sections are all
7233 zeros as generated by gcc, but I suppose there's no reason
7234 this will always be so. We might start putting something in
7235 the third word of .opd entries. */
7236 if ((sec->flags & SEC_IN_MEMORY) == 0)
7239 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7244 if (local_syms != NULL
7245 && symtab_hdr->contents != (unsigned char *) local_syms)
7247 if (elf_section_data (sec)->relocs != relstart)
7251 sec->contents = loc;
7252 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7255 elf_section_data (sec)->relocs = relstart;
7257 new_contents = sec->contents;
7260 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7261 if (new_contents == NULL)
7265 wptr = new_contents;
7266 rptr = sec->contents;
7268 write_rel = relstart;
7272 for (rel = relstart; rel < relend; rel++)
7274 unsigned long r_symndx;
7276 struct elf_link_hash_entry *h;
7277 Elf_Internal_Sym *sym;
7279 r_symndx = ELF64_R_SYM (rel->r_info);
7280 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7284 if (rel->r_offset == offset)
7286 struct ppc_link_hash_entry *fdh = NULL;
7288 /* See if the .opd entry is full 24 byte or
7289 16 byte (with fd_aux entry overlapped with next
7292 if ((rel + 2 == relend && sec->size == offset + 16)
7293 || (rel + 3 < relend
7294 && rel[2].r_offset == offset + 16
7295 && rel[3].r_offset == offset + 24
7296 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7297 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7301 && h->root.root.string[0] == '.')
7303 struct ppc_link_hash_table *htab;
7305 htab = ppc_hash_table (info);
7307 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7310 && fdh->elf.root.type != bfd_link_hash_defined
7311 && fdh->elf.root.type != bfd_link_hash_defweak)
7315 skip = (sym_sec->owner != ibfd
7316 || sym_sec->output_section == bfd_abs_section_ptr);
7319 if (fdh != NULL && sym_sec->owner == ibfd)
7321 /* Arrange for the function descriptor sym
7323 fdh->elf.root.u.def.value = 0;
7324 fdh->elf.root.u.def.section = sym_sec;
7326 opd->adjust[rel->r_offset / 8] = -1;
7330 /* We'll be keeping this opd entry. */
7334 /* Redefine the function descriptor symbol to
7335 this location in the opd section. It is
7336 necessary to update the value here rather
7337 than using an array of adjustments as we do
7338 for local symbols, because various places
7339 in the generic ELF code use the value
7340 stored in u.def.value. */
7341 fdh->elf.root.u.def.value = wptr - new_contents;
7342 fdh->adjust_done = 1;
7345 /* Local syms are a bit tricky. We could
7346 tweak them as they can be cached, but
7347 we'd need to look through the local syms
7348 for the function descriptor sym which we
7349 don't have at the moment. So keep an
7350 array of adjustments. */
7351 opd->adjust[rel->r_offset / 8]
7352 = (wptr - new_contents) - (rptr - sec->contents);
7355 memcpy (wptr, rptr, opd_ent_size);
7356 wptr += opd_ent_size;
7357 if (add_aux_fields && opd_ent_size == 16)
7359 memset (wptr, '\0', 8);
7363 rptr += opd_ent_size;
7364 offset += opd_ent_size;
7370 && !info->relocatable
7371 && !dec_dynrel_count (rel->r_info, sec, info,
7377 /* We need to adjust any reloc offsets to point to the
7378 new opd entries. While we're at it, we may as well
7379 remove redundant relocs. */
7380 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7381 if (write_rel != rel)
7382 memcpy (write_rel, rel, sizeof (*rel));
7387 sec->size = wptr - new_contents;
7388 sec->reloc_count = write_rel - relstart;
7391 free (sec->contents);
7392 sec->contents = new_contents;
7395 /* Fudge the header size too, as this is used later in
7396 elf_bfd_final_link if we are emitting relocs. */
7397 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7398 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7401 else if (elf_section_data (sec)->relocs != relstart)
7404 if (local_syms != NULL
7405 && symtab_hdr->contents != (unsigned char *) local_syms)
7407 if (!info->keep_memory)
7410 symtab_hdr->contents = (unsigned char *) local_syms;
7415 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7417 /* If we are doing a final link and the last .opd entry is just 16 byte
7418 long, add a 8 byte padding after it. */
7419 if (need_pad != NULL && !info->relocatable)
7423 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7425 BFD_ASSERT (need_pad->size > 0);
7427 p = bfd_malloc (need_pad->size + 8);
7431 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7432 p, 0, need_pad->size))
7435 need_pad->contents = p;
7436 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7440 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7444 need_pad->contents = p;
7447 memset (need_pad->contents + need_pad->size, 0, 8);
7448 need_pad->size += 8;
7454 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7457 ppc64_elf_tls_setup (struct bfd_link_info *info,
7458 int no_tls_get_addr_opt,
7461 struct ppc_link_hash_table *htab;
7463 htab = ppc_hash_table (info);
7468 htab->do_multi_toc = 0;
7469 else if (!htab->do_multi_toc)
7472 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7473 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7474 FALSE, FALSE, TRUE));
7475 /* Move dynamic linking info to the function descriptor sym. */
7476 if (htab->tls_get_addr != NULL)
7477 func_desc_adjust (&htab->tls_get_addr->elf, info);
7478 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7479 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7480 FALSE, FALSE, TRUE));
7481 if (!no_tls_get_addr_opt)
7483 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7485 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7486 FALSE, FALSE, TRUE);
7488 func_desc_adjust (opt, info);
7489 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7490 FALSE, FALSE, TRUE);
7492 && (opt_fd->root.type == bfd_link_hash_defined
7493 || opt_fd->root.type == bfd_link_hash_defweak))
7495 /* If glibc supports an optimized __tls_get_addr call stub,
7496 signalled by the presence of __tls_get_addr_opt, and we'll
7497 be calling __tls_get_addr via a plt call stub, then
7498 make __tls_get_addr point to __tls_get_addr_opt. */
7499 tga_fd = &htab->tls_get_addr_fd->elf;
7500 if (htab->elf.dynamic_sections_created
7502 && (tga_fd->type == STT_FUNC
7503 || tga_fd->needs_plt)
7504 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7505 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7506 && tga_fd->root.type == bfd_link_hash_undefweak)))
7508 struct plt_entry *ent;
7510 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7511 if (ent->plt.refcount > 0)
7515 tga_fd->root.type = bfd_link_hash_indirect;
7516 tga_fd->root.u.i.link = &opt_fd->root;
7517 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7518 if (opt_fd->dynindx != -1)
7520 /* Use __tls_get_addr_opt in dynamic relocations. */
7521 opt_fd->dynindx = -1;
7522 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7523 opt_fd->dynstr_index);
7524 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7527 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7528 tga = &htab->tls_get_addr->elf;
7529 if (opt != NULL && tga != NULL)
7531 tga->root.type = bfd_link_hash_indirect;
7532 tga->root.u.i.link = &opt->root;
7533 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7534 _bfd_elf_link_hash_hide_symbol (info, opt,
7536 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7538 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7539 htab->tls_get_addr_fd->is_func_descriptor = 1;
7540 if (htab->tls_get_addr != NULL)
7542 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7543 htab->tls_get_addr->is_func = 1;
7549 no_tls_get_addr_opt = TRUE;
7551 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7552 return _bfd_elf_tls_setup (info->output_bfd, info);
7555 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7559 branch_reloc_hash_match (const bfd *ibfd,
7560 const Elf_Internal_Rela *rel,
7561 const struct ppc_link_hash_entry *hash1,
7562 const struct ppc_link_hash_entry *hash2)
7564 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7565 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7566 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7568 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7570 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7571 struct elf_link_hash_entry *h;
7573 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7574 h = elf_follow_link (h);
7575 if (h == &hash1->elf || h == &hash2->elf)
7581 /* Run through all the TLS relocs looking for optimization
7582 opportunities. The linker has been hacked (see ppc64elf.em) to do
7583 a preliminary section layout so that we know the TLS segment
7584 offsets. We can't optimize earlier because some optimizations need
7585 to know the tp offset, and we need to optimize before allocating
7586 dynamic relocations. */
7589 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7593 struct ppc_link_hash_table *htab;
7594 unsigned char *toc_ref;
7597 if (info->relocatable || !info->executable)
7600 htab = ppc_hash_table (info);
7604 /* Make two passes over the relocs. On the first pass, mark toc
7605 entries involved with tls relocs, and check that tls relocs
7606 involved in setting up a tls_get_addr call are indeed followed by
7607 such a call. If they are not, we can't do any tls optimization.
7608 On the second pass twiddle tls_mask flags to notify
7609 relocate_section that optimization can be done, and adjust got
7610 and plt refcounts. */
7612 for (pass = 0; pass < 2; ++pass)
7613 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7615 Elf_Internal_Sym *locsyms = NULL;
7616 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7618 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7619 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7621 Elf_Internal_Rela *relstart, *rel, *relend;
7622 bfd_boolean found_tls_get_addr_arg = 0;
7624 /* Read the relocations. */
7625 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7627 if (relstart == NULL)
7630 relend = relstart + sec->reloc_count;
7631 for (rel = relstart; rel < relend; rel++)
7633 enum elf_ppc64_reloc_type r_type;
7634 unsigned long r_symndx;
7635 struct elf_link_hash_entry *h;
7636 Elf_Internal_Sym *sym;
7638 unsigned char *tls_mask;
7639 unsigned char tls_set, tls_clear, tls_type = 0;
7641 bfd_boolean ok_tprel, is_local;
7642 long toc_ref_index = 0;
7643 int expecting_tls_get_addr = 0;
7644 bfd_boolean ret = FALSE;
7646 r_symndx = ELF64_R_SYM (rel->r_info);
7647 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7651 if (elf_section_data (sec)->relocs != relstart)
7653 if (toc_ref != NULL)
7656 && (elf_symtab_hdr (ibfd).contents
7657 != (unsigned char *) locsyms))
7664 if (h->root.type == bfd_link_hash_defined
7665 || h->root.type == bfd_link_hash_defweak)
7666 value = h->root.u.def.value;
7667 else if (h->root.type == bfd_link_hash_undefweak)
7671 found_tls_get_addr_arg = 0;
7676 /* Symbols referenced by TLS relocs must be of type
7677 STT_TLS. So no need for .opd local sym adjust. */
7678 value = sym->st_value;
7687 && h->root.type == bfd_link_hash_undefweak)
7691 value += sym_sec->output_offset;
7692 value += sym_sec->output_section->vma;
7693 value -= htab->elf.tls_sec->vma;
7694 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7695 < (bfd_vma) 1 << 32);
7699 r_type = ELF64_R_TYPE (rel->r_info);
7700 /* If this section has old-style __tls_get_addr calls
7701 without marker relocs, then check that each
7702 __tls_get_addr call reloc is preceded by a reloc
7703 that conceivably belongs to the __tls_get_addr arg
7704 setup insn. If we don't find matching arg setup
7705 relocs, don't do any tls optimization. */
7707 && sec->has_tls_get_addr_call
7709 && (h == &htab->tls_get_addr->elf
7710 || h == &htab->tls_get_addr_fd->elf)
7711 && !found_tls_get_addr_arg
7712 && is_branch_reloc (r_type))
7714 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
7715 "TLS optimization disabled\n"),
7716 ibfd, sec, rel->r_offset);
7721 found_tls_get_addr_arg = 0;
7724 case R_PPC64_GOT_TLSLD16:
7725 case R_PPC64_GOT_TLSLD16_LO:
7726 expecting_tls_get_addr = 1;
7727 found_tls_get_addr_arg = 1;
7730 case R_PPC64_GOT_TLSLD16_HI:
7731 case R_PPC64_GOT_TLSLD16_HA:
7732 /* These relocs should never be against a symbol
7733 defined in a shared lib. Leave them alone if
7734 that turns out to be the case. */
7741 tls_type = TLS_TLS | TLS_LD;
7744 case R_PPC64_GOT_TLSGD16:
7745 case R_PPC64_GOT_TLSGD16_LO:
7746 expecting_tls_get_addr = 1;
7747 found_tls_get_addr_arg = 1;
7750 case R_PPC64_GOT_TLSGD16_HI:
7751 case R_PPC64_GOT_TLSGD16_HA:
7757 tls_set = TLS_TLS | TLS_TPRELGD;
7759 tls_type = TLS_TLS | TLS_GD;
7762 case R_PPC64_GOT_TPREL16_DS:
7763 case R_PPC64_GOT_TPREL16_LO_DS:
7764 case R_PPC64_GOT_TPREL16_HI:
7765 case R_PPC64_GOT_TPREL16_HA:
7770 tls_clear = TLS_TPREL;
7771 tls_type = TLS_TLS | TLS_TPREL;
7778 found_tls_get_addr_arg = 1;
7783 case R_PPC64_TOC16_LO:
7784 if (sym_sec == NULL || sym_sec != toc)
7787 /* Mark this toc entry as referenced by a TLS
7788 code sequence. We can do that now in the
7789 case of R_PPC64_TLS, and after checking for
7790 tls_get_addr for the TOC16 relocs. */
7791 if (toc_ref == NULL)
7792 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7793 if (toc_ref == NULL)
7797 value = h->root.u.def.value;
7799 value = sym->st_value;
7800 value += rel->r_addend;
7801 BFD_ASSERT (value < toc->size && value % 8 == 0);
7802 toc_ref_index = (value + toc->output_offset) / 8;
7803 if (r_type == R_PPC64_TLS
7804 || r_type == R_PPC64_TLSGD
7805 || r_type == R_PPC64_TLSLD)
7807 toc_ref[toc_ref_index] = 1;
7811 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7816 expecting_tls_get_addr = 2;
7819 case R_PPC64_TPREL64:
7823 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7828 tls_set = TLS_EXPLICIT;
7829 tls_clear = TLS_TPREL;
7834 case R_PPC64_DTPMOD64:
7838 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7840 if (rel + 1 < relend
7842 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7843 && rel[1].r_offset == rel->r_offset + 8)
7847 tls_set = TLS_EXPLICIT | TLS_GD;
7850 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7859 tls_set = TLS_EXPLICIT;
7870 if (!expecting_tls_get_addr
7871 || !sec->has_tls_get_addr_call)
7874 if (rel + 1 < relend
7875 && branch_reloc_hash_match (ibfd, rel + 1,
7877 htab->tls_get_addr_fd))
7879 if (expecting_tls_get_addr == 2)
7881 /* Check for toc tls entries. */
7882 unsigned char *toc_tls;
7885 retval = get_tls_mask (&toc_tls, NULL, NULL,
7890 if (toc_tls != NULL)
7892 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7893 found_tls_get_addr_arg = 1;
7895 toc_ref[toc_ref_index] = 1;
7901 if (expecting_tls_get_addr != 1)
7904 /* Uh oh, we didn't find the expected call. We
7905 could just mark this symbol to exclude it
7906 from tls optimization but it's safer to skip
7907 the entire optimization. */
7908 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
7909 "TLS optimization disabled\n"),
7910 ibfd, sec, rel->r_offset);
7915 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7917 struct plt_entry *ent;
7918 for (ent = htab->tls_get_addr->elf.plt.plist;
7921 if (ent->addend == 0)
7923 if (ent->plt.refcount > 0)
7925 ent->plt.refcount -= 1;
7926 expecting_tls_get_addr = 0;
7932 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7934 struct plt_entry *ent;
7935 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7938 if (ent->addend == 0)
7940 if (ent->plt.refcount > 0)
7941 ent->plt.refcount -= 1;
7949 if ((tls_set & TLS_EXPLICIT) == 0)
7951 struct got_entry *ent;
7953 /* Adjust got entry for this reloc. */
7957 ent = elf_local_got_ents (ibfd)[r_symndx];
7959 for (; ent != NULL; ent = ent->next)
7960 if (ent->addend == rel->r_addend
7961 && ent->owner == ibfd
7962 && ent->tls_type == tls_type)
7969 /* We managed to get rid of a got entry. */
7970 if (ent->got.refcount > 0)
7971 ent->got.refcount -= 1;
7976 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7977 we'll lose one or two dyn relocs. */
7978 if (!dec_dynrel_count (rel->r_info, sec, info,
7982 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7984 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7990 *tls_mask |= tls_set;
7991 *tls_mask &= ~tls_clear;
7994 if (elf_section_data (sec)->relocs != relstart)
7999 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8001 if (!info->keep_memory)
8004 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8008 if (toc_ref != NULL)
8013 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8014 the values of any global symbols in a toc section that has been
8015 edited. Globals in toc sections should be a rarity, so this function
8016 sets a flag if any are found in toc sections other than the one just
8017 edited, so that futher hash table traversals can be avoided. */
8019 struct adjust_toc_info
8022 unsigned long *skip;
8023 bfd_boolean global_toc_syms;
8026 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8029 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8031 struct ppc_link_hash_entry *eh;
8032 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8035 if (h->root.type != bfd_link_hash_defined
8036 && h->root.type != bfd_link_hash_defweak)
8039 eh = (struct ppc_link_hash_entry *) h;
8040 if (eh->adjust_done)
8043 if (eh->elf.root.u.def.section == toc_inf->toc)
8045 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8046 i = toc_inf->toc->rawsize >> 3;
8048 i = eh->elf.root.u.def.value >> 3;
8050 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8052 (*_bfd_error_handler)
8053 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8056 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8057 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8060 eh->elf.root.u.def.value -= toc_inf->skip[i];
8061 eh->adjust_done = 1;
8063 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8064 toc_inf->global_toc_syms = TRUE;
8069 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8072 ok_lo_toc_insn (unsigned int insn)
8074 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8075 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8076 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8077 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8078 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8079 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8080 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8081 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8082 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8083 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8084 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8085 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8086 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8087 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8088 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8090 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8091 && ((insn & 3) == 0 || (insn & 3) == 3))
8092 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8095 /* Examine all relocs referencing .toc sections in order to remove
8096 unused .toc entries. */
8099 ppc64_elf_edit_toc (struct bfd_link_info *info)
8102 struct adjust_toc_info toc_inf;
8103 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8105 htab->do_toc_opt = 1;
8106 toc_inf.global_toc_syms = TRUE;
8107 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8109 asection *toc, *sec;
8110 Elf_Internal_Shdr *symtab_hdr;
8111 Elf_Internal_Sym *local_syms;
8112 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8113 unsigned long *skip, *drop;
8114 unsigned char *used;
8115 unsigned char *keep, last, some_unused;
8117 if (!is_ppc64_elf (ibfd))
8120 toc = bfd_get_section_by_name (ibfd, ".toc");
8123 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8124 || discarded_section (toc))
8129 symtab_hdr = &elf_symtab_hdr (ibfd);
8131 /* Look at sections dropped from the final link. */
8134 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8136 if (sec->reloc_count == 0
8137 || !discarded_section (sec)
8138 || get_opd_info (sec)
8139 || (sec->flags & SEC_ALLOC) == 0
8140 || (sec->flags & SEC_DEBUGGING) != 0)
8143 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8144 if (relstart == NULL)
8147 /* Run through the relocs to see which toc entries might be
8149 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8151 enum elf_ppc64_reloc_type r_type;
8152 unsigned long r_symndx;
8154 struct elf_link_hash_entry *h;
8155 Elf_Internal_Sym *sym;
8158 r_type = ELF64_R_TYPE (rel->r_info);
8165 case R_PPC64_TOC16_LO:
8166 case R_PPC64_TOC16_HI:
8167 case R_PPC64_TOC16_HA:
8168 case R_PPC64_TOC16_DS:
8169 case R_PPC64_TOC16_LO_DS:
8173 r_symndx = ELF64_R_SYM (rel->r_info);
8174 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8182 val = h->root.u.def.value;
8184 val = sym->st_value;
8185 val += rel->r_addend;
8187 if (val >= toc->size)
8190 /* Anything in the toc ought to be aligned to 8 bytes.
8191 If not, don't mark as unused. */
8197 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8202 skip[val >> 3] = ref_from_discarded;
8205 if (elf_section_data (sec)->relocs != relstart)
8209 /* For largetoc loads of address constants, we can convert
8210 . addis rx,2,addr@got@ha
8211 . ld ry,addr@got@l(rx)
8213 . addis rx,2,addr@toc@ha
8214 . addi ry,rx,addr@toc@l
8215 when addr is within 2G of the toc pointer. This then means
8216 that the word storing "addr" in the toc is no longer needed. */
8218 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8219 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8220 && toc->reloc_count != 0)
8222 /* Read toc relocs. */
8223 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8225 if (toc_relocs == NULL)
8228 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8230 enum elf_ppc64_reloc_type r_type;
8231 unsigned long r_symndx;
8233 struct elf_link_hash_entry *h;
8234 Elf_Internal_Sym *sym;
8237 r_type = ELF64_R_TYPE (rel->r_info);
8238 if (r_type != R_PPC64_ADDR64)
8241 r_symndx = ELF64_R_SYM (rel->r_info);
8242 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8247 || discarded_section (sym_sec))
8250 if (!SYMBOL_CALLS_LOCAL (info, h))
8255 if (h->type == STT_GNU_IFUNC)
8257 val = h->root.u.def.value;
8261 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8263 val = sym->st_value;
8265 val += rel->r_addend;
8266 val += sym_sec->output_section->vma + sym_sec->output_offset;
8268 /* We don't yet know the exact toc pointer value, but we
8269 know it will be somewhere in the toc section. Don't
8270 optimize if the difference from any possible toc
8271 pointer is outside [ff..f80008000, 7fff7fff]. */
8272 addr = toc->output_section->vma + TOC_BASE_OFF;
8273 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8276 addr = toc->output_section->vma + toc->output_section->rawsize;
8277 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8282 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8287 skip[rel->r_offset >> 3]
8288 |= can_optimize | ((rel - toc_relocs) << 2);
8295 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8299 if (local_syms != NULL
8300 && symtab_hdr->contents != (unsigned char *) local_syms)
8304 && elf_section_data (sec)->relocs != relstart)
8306 if (toc_relocs != NULL
8307 && elf_section_data (toc)->relocs != toc_relocs)
8314 /* Now check all kept sections that might reference the toc.
8315 Check the toc itself last. */
8316 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8319 sec = (sec == toc ? NULL
8320 : sec->next == NULL ? toc
8321 : sec->next == toc && toc->next ? toc->next
8326 if (sec->reloc_count == 0
8327 || discarded_section (sec)
8328 || get_opd_info (sec)
8329 || (sec->flags & SEC_ALLOC) == 0
8330 || (sec->flags & SEC_DEBUGGING) != 0)
8333 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8335 if (relstart == NULL)
8338 /* Mark toc entries referenced as used. */
8341 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8343 enum elf_ppc64_reloc_type r_type;
8344 unsigned long r_symndx;
8346 struct elf_link_hash_entry *h;
8347 Elf_Internal_Sym *sym;
8349 enum {no_check, check_lo, check_ha} insn_check;
8351 r_type = ELF64_R_TYPE (rel->r_info);
8355 insn_check = no_check;
8358 case R_PPC64_GOT_TLSLD16_HA:
8359 case R_PPC64_GOT_TLSGD16_HA:
8360 case R_PPC64_GOT_TPREL16_HA:
8361 case R_PPC64_GOT_DTPREL16_HA:
8362 case R_PPC64_GOT16_HA:
8363 case R_PPC64_TOC16_HA:
8364 insn_check = check_ha;
8367 case R_PPC64_GOT_TLSLD16_LO:
8368 case R_PPC64_GOT_TLSGD16_LO:
8369 case R_PPC64_GOT_TPREL16_LO_DS:
8370 case R_PPC64_GOT_DTPREL16_LO_DS:
8371 case R_PPC64_GOT16_LO:
8372 case R_PPC64_GOT16_LO_DS:
8373 case R_PPC64_TOC16_LO:
8374 case R_PPC64_TOC16_LO_DS:
8375 insn_check = check_lo;
8379 if (insn_check != no_check)
8381 bfd_vma off = rel->r_offset & ~3;
8382 unsigned char buf[4];
8385 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8390 insn = bfd_get_32 (ibfd, buf);
8391 if (insn_check == check_lo
8392 ? !ok_lo_toc_insn (insn)
8393 : ((insn & ((0x3f << 26) | 0x1f << 16))
8394 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8398 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8399 sprintf (str, "%#08x", insn);
8400 info->callbacks->einfo
8401 (_("%P: %H: toc optimization is not supported for"
8402 " %s instruction.\n"),
8403 ibfd, sec, rel->r_offset & ~3, str);
8410 case R_PPC64_TOC16_LO:
8411 case R_PPC64_TOC16_HI:
8412 case R_PPC64_TOC16_HA:
8413 case R_PPC64_TOC16_DS:
8414 case R_PPC64_TOC16_LO_DS:
8415 /* In case we're taking addresses of toc entries. */
8416 case R_PPC64_ADDR64:
8423 r_symndx = ELF64_R_SYM (rel->r_info);
8424 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8435 val = h->root.u.def.value;
8437 val = sym->st_value;
8438 val += rel->r_addend;
8440 if (val >= toc->size)
8443 if ((skip[val >> 3] & can_optimize) != 0)
8450 case R_PPC64_TOC16_HA:
8453 case R_PPC64_TOC16_LO_DS:
8454 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8455 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
8460 if ((opc & (0x3f << 2)) == (58u << 2))
8465 /* Wrong sort of reloc, or not a ld. We may
8466 as well clear ref_from_discarded too. */
8471 /* For the toc section, we only mark as used if
8472 this entry itself isn't unused. */
8475 && (used[rel->r_offset >> 3]
8476 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
8477 /* Do all the relocs again, to catch reference
8485 if (elf_section_data (sec)->relocs != relstart)
8489 /* Merge the used and skip arrays. Assume that TOC
8490 doublewords not appearing as either used or unused belong
8491 to to an entry more than one doubleword in size. */
8492 for (drop = skip, keep = used, last = 0, some_unused = 0;
8493 drop < skip + (toc->size + 7) / 8;
8498 *drop &= ~ref_from_discarded;
8499 if ((*drop & can_optimize) != 0)
8503 else if ((*drop & ref_from_discarded) != 0)
8506 last = ref_from_discarded;
8516 bfd_byte *contents, *src;
8518 Elf_Internal_Sym *sym;
8519 bfd_boolean local_toc_syms = FALSE;
8521 /* Shuffle the toc contents, and at the same time convert the
8522 skip array from booleans into offsets. */
8523 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8526 elf_section_data (toc)->this_hdr.contents = contents;
8528 for (src = contents, off = 0, drop = skip;
8529 src < contents + toc->size;
8532 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8537 memcpy (src - off, src, 8);
8541 toc->rawsize = toc->size;
8542 toc->size = src - contents - off;
8544 /* Adjust addends for relocs against the toc section sym,
8545 and optimize any accesses we can. */
8546 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8548 if (sec->reloc_count == 0
8549 || discarded_section (sec))
8552 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8554 if (relstart == NULL)
8557 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8559 enum elf_ppc64_reloc_type r_type;
8560 unsigned long r_symndx;
8562 struct elf_link_hash_entry *h;
8565 r_type = ELF64_R_TYPE (rel->r_info);
8572 case R_PPC64_TOC16_LO:
8573 case R_PPC64_TOC16_HI:
8574 case R_PPC64_TOC16_HA:
8575 case R_PPC64_TOC16_DS:
8576 case R_PPC64_TOC16_LO_DS:
8577 case R_PPC64_ADDR64:
8581 r_symndx = ELF64_R_SYM (rel->r_info);
8582 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8590 val = h->root.u.def.value;
8593 val = sym->st_value;
8595 local_toc_syms = TRUE;
8598 val += rel->r_addend;
8600 if (val > toc->rawsize)
8602 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8604 else if ((skip[val >> 3] & can_optimize) != 0)
8606 Elf_Internal_Rela *tocrel
8607 = toc_relocs + (skip[val >> 3] >> 2);
8608 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8612 case R_PPC64_TOC16_HA:
8613 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8616 case R_PPC64_TOC16_LO_DS:
8617 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8621 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8623 info->callbacks->einfo
8624 (_("%P: %H: %s relocation references "
8625 "optimized away TOC entry\n"),
8626 ibfd, sec, rel->r_offset,
8627 ppc64_elf_howto_table[r_type]->name);
8628 bfd_set_error (bfd_error_bad_value);
8631 rel->r_addend = tocrel->r_addend;
8632 elf_section_data (sec)->relocs = relstart;
8636 if (h != NULL || sym->st_value != 0)
8639 rel->r_addend -= skip[val >> 3];
8640 elf_section_data (sec)->relocs = relstart;
8643 if (elf_section_data (sec)->relocs != relstart)
8647 /* We shouldn't have local or global symbols defined in the TOC,
8648 but handle them anyway. */
8649 if (local_syms != NULL)
8650 for (sym = local_syms;
8651 sym < local_syms + symtab_hdr->sh_info;
8653 if (sym->st_value != 0
8654 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8658 if (sym->st_value > toc->rawsize)
8659 i = toc->rawsize >> 3;
8661 i = sym->st_value >> 3;
8663 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8666 (*_bfd_error_handler)
8667 (_("%s defined on removed toc entry"),
8668 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8671 while ((skip[i] & (ref_from_discarded | can_optimize)));
8672 sym->st_value = (bfd_vma) i << 3;
8675 sym->st_value -= skip[i];
8676 symtab_hdr->contents = (unsigned char *) local_syms;
8679 /* Adjust any global syms defined in this toc input section. */
8680 if (toc_inf.global_toc_syms)
8683 toc_inf.skip = skip;
8684 toc_inf.global_toc_syms = FALSE;
8685 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8689 if (toc->reloc_count != 0)
8691 Elf_Internal_Shdr *rel_hdr;
8692 Elf_Internal_Rela *wrel;
8695 /* Remove unused toc relocs, and adjust those we keep. */
8696 if (toc_relocs == NULL)
8697 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8699 if (toc_relocs == NULL)
8703 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8704 if ((skip[rel->r_offset >> 3]
8705 & (ref_from_discarded | can_optimize)) == 0)
8707 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8708 wrel->r_info = rel->r_info;
8709 wrel->r_addend = rel->r_addend;
8712 else if (!dec_dynrel_count (rel->r_info, toc, info,
8713 &local_syms, NULL, NULL))
8716 elf_section_data (toc)->relocs = toc_relocs;
8717 toc->reloc_count = wrel - toc_relocs;
8718 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8719 sz = rel_hdr->sh_entsize;
8720 rel_hdr->sh_size = toc->reloc_count * sz;
8723 else if (toc_relocs != NULL
8724 && elf_section_data (toc)->relocs != toc_relocs)
8727 if (local_syms != NULL
8728 && symtab_hdr->contents != (unsigned char *) local_syms)
8730 if (!info->keep_memory)
8733 symtab_hdr->contents = (unsigned char *) local_syms;
8741 /* Return true iff input section I references the TOC using
8742 instructions limited to +/-32k offsets. */
8745 ppc64_elf_has_small_toc_reloc (asection *i)
8747 return (is_ppc64_elf (i->owner)
8748 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8751 /* Allocate space for one GOT entry. */
8754 allocate_got (struct elf_link_hash_entry *h,
8755 struct bfd_link_info *info,
8756 struct got_entry *gent)
8758 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8760 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8761 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8763 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8764 ? 2 : 1) * sizeof (Elf64_External_Rela);
8765 asection *got = ppc64_elf_tdata (gent->owner)->got;
8767 gent->got.offset = got->size;
8768 got->size += entsize;
8770 dyn = htab->elf.dynamic_sections_created;
8772 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8773 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8774 || h->root.type != bfd_link_hash_undefweak))
8776 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8777 relgot->size += rentsize;
8779 else if (h->type == STT_GNU_IFUNC)
8781 asection *relgot = htab->reliplt;
8782 relgot->size += rentsize;
8783 htab->got_reli_size += rentsize;
8787 /* This function merges got entries in the same toc group. */
8790 merge_got_entries (struct got_entry **pent)
8792 struct got_entry *ent, *ent2;
8794 for (ent = *pent; ent != NULL; ent = ent->next)
8795 if (!ent->is_indirect)
8796 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8797 if (!ent2->is_indirect
8798 && ent2->addend == ent->addend
8799 && ent2->tls_type == ent->tls_type
8800 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8802 ent2->is_indirect = TRUE;
8803 ent2->got.ent = ent;
8807 /* Allocate space in .plt, .got and associated reloc sections for
8811 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8813 struct bfd_link_info *info;
8814 struct ppc_link_hash_table *htab;
8816 struct ppc_link_hash_entry *eh;
8817 struct elf_dyn_relocs *p;
8818 struct got_entry **pgent, *gent;
8820 if (h->root.type == bfd_link_hash_indirect)
8823 info = (struct bfd_link_info *) inf;
8824 htab = ppc_hash_table (info);
8828 if ((htab->elf.dynamic_sections_created
8830 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8831 || h->type == STT_GNU_IFUNC)
8833 struct plt_entry *pent;
8834 bfd_boolean doneone = FALSE;
8835 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8836 if (pent->plt.refcount > 0)
8838 if (!htab->elf.dynamic_sections_created
8839 || h->dynindx == -1)
8842 pent->plt.offset = s->size;
8843 s->size += PLT_ENTRY_SIZE;
8848 /* If this is the first .plt entry, make room for the special
8852 s->size += PLT_INITIAL_ENTRY_SIZE;
8854 pent->plt.offset = s->size;
8856 /* Make room for this entry. */
8857 s->size += PLT_ENTRY_SIZE;
8859 /* Make room for the .glink code. */
8862 s->size += GLINK_CALL_STUB_SIZE;
8863 /* We need bigger stubs past index 32767. */
8864 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8868 /* We also need to make an entry in the .rela.plt section. */
8871 s->size += sizeof (Elf64_External_Rela);
8875 pent->plt.offset = (bfd_vma) -1;
8878 h->plt.plist = NULL;
8884 h->plt.plist = NULL;
8888 eh = (struct ppc_link_hash_entry *) h;
8889 /* Run through the TLS GD got entries first if we're changing them
8891 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8892 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8893 if (gent->got.refcount > 0
8894 && (gent->tls_type & TLS_GD) != 0)
8896 /* This was a GD entry that has been converted to TPREL. If
8897 there happens to be a TPREL entry we can use that one. */
8898 struct got_entry *ent;
8899 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8900 if (ent->got.refcount > 0
8901 && (ent->tls_type & TLS_TPREL) != 0
8902 && ent->addend == gent->addend
8903 && ent->owner == gent->owner)
8905 gent->got.refcount = 0;
8909 /* If not, then we'll be using our own TPREL entry. */
8910 if (gent->got.refcount != 0)
8911 gent->tls_type = TLS_TLS | TLS_TPREL;
8914 /* Remove any list entry that won't generate a word in the GOT before
8915 we call merge_got_entries. Otherwise we risk merging to empty
8917 pgent = &h->got.glist;
8918 while ((gent = *pgent) != NULL)
8919 if (gent->got.refcount > 0)
8921 if ((gent->tls_type & TLS_LD) != 0
8924 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8925 *pgent = gent->next;
8928 pgent = &gent->next;
8931 *pgent = gent->next;
8933 if (!htab->do_multi_toc)
8934 merge_got_entries (&h->got.glist);
8936 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8937 if (!gent->is_indirect)
8939 /* Make sure this symbol is output as a dynamic symbol.
8940 Undefined weak syms won't yet be marked as dynamic,
8941 nor will all TLS symbols. */
8942 if (h->dynindx == -1
8944 && h->type != STT_GNU_IFUNC
8945 && htab->elf.dynamic_sections_created)
8947 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8951 if (!is_ppc64_elf (gent->owner))
8954 allocate_got (h, info, gent);
8957 if (eh->dyn_relocs == NULL
8958 || (!htab->elf.dynamic_sections_created
8959 && h->type != STT_GNU_IFUNC))
8962 /* In the shared -Bsymbolic case, discard space allocated for
8963 dynamic pc-relative relocs against symbols which turn out to be
8964 defined in regular objects. For the normal shared case, discard
8965 space for relocs that have become local due to symbol visibility
8970 /* Relocs that use pc_count are those that appear on a call insn,
8971 or certain REL relocs (see must_be_dyn_reloc) that can be
8972 generated via assembly. We want calls to protected symbols to
8973 resolve directly to the function rather than going via the plt.
8974 If people want function pointer comparisons to work as expected
8975 then they should avoid writing weird assembly. */
8976 if (SYMBOL_CALLS_LOCAL (info, h))
8978 struct elf_dyn_relocs **pp;
8980 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8982 p->count -= p->pc_count;
8991 /* Also discard relocs on undefined weak syms with non-default
8993 if (eh->dyn_relocs != NULL
8994 && h->root.type == bfd_link_hash_undefweak)
8996 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8997 eh->dyn_relocs = NULL;
8999 /* Make sure this symbol is output as a dynamic symbol.
9000 Undefined weak syms won't yet be marked as dynamic. */
9001 else if (h->dynindx == -1
9002 && !h->forced_local)
9004 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9009 else if (h->type == STT_GNU_IFUNC)
9011 if (!h->non_got_ref)
9012 eh->dyn_relocs = NULL;
9014 else if (ELIMINATE_COPY_RELOCS)
9016 /* For the non-shared case, discard space for relocs against
9017 symbols which turn out to need copy relocs or are not
9023 /* Make sure this symbol is output as a dynamic symbol.
9024 Undefined weak syms won't yet be marked as dynamic. */
9025 if (h->dynindx == -1
9026 && !h->forced_local)
9028 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9032 /* If that succeeded, we know we'll be keeping all the
9034 if (h->dynindx != -1)
9038 eh->dyn_relocs = NULL;
9043 /* Finally, allocate space. */
9044 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9046 asection *sreloc = elf_section_data (p->sec)->sreloc;
9047 if (!htab->elf.dynamic_sections_created)
9048 sreloc = htab->reliplt;
9049 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9055 /* Find any dynamic relocs that apply to read-only sections. */
9058 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9060 struct ppc_link_hash_entry *eh;
9061 struct elf_dyn_relocs *p;
9063 eh = (struct ppc_link_hash_entry *) h;
9064 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9066 asection *s = p->sec->output_section;
9068 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9070 struct bfd_link_info *info = inf;
9072 info->flags |= DF_TEXTREL;
9074 /* Not an error, just cut short the traversal. */
9081 /* Set the sizes of the dynamic sections. */
9084 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
9085 struct bfd_link_info *info)
9087 struct ppc_link_hash_table *htab;
9092 struct got_entry *first_tlsld;
9094 htab = ppc_hash_table (info);
9098 dynobj = htab->elf.dynobj;
9102 if (htab->elf.dynamic_sections_created)
9104 /* Set the contents of the .interp section to the interpreter. */
9105 if (info->executable)
9107 s = bfd_get_section_by_name (dynobj, ".interp");
9110 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9111 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9115 /* Set up .got offsets for local syms, and space for local dynamic
9117 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9119 struct got_entry **lgot_ents;
9120 struct got_entry **end_lgot_ents;
9121 struct plt_entry **local_plt;
9122 struct plt_entry **end_local_plt;
9123 unsigned char *lgot_masks;
9124 bfd_size_type locsymcount;
9125 Elf_Internal_Shdr *symtab_hdr;
9128 if (!is_ppc64_elf (ibfd))
9131 for (s = ibfd->sections; s != NULL; s = s->next)
9133 struct elf_dyn_relocs *p;
9135 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9137 if (!bfd_is_abs_section (p->sec)
9138 && bfd_is_abs_section (p->sec->output_section))
9140 /* Input section has been discarded, either because
9141 it is a copy of a linkonce section or due to
9142 linker script /DISCARD/, so we'll be discarding
9145 else if (p->count != 0)
9147 srel = elf_section_data (p->sec)->sreloc;
9148 if (!htab->elf.dynamic_sections_created)
9149 srel = htab->reliplt;
9150 srel->size += p->count * sizeof (Elf64_External_Rela);
9151 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9152 info->flags |= DF_TEXTREL;
9157 lgot_ents = elf_local_got_ents (ibfd);
9161 symtab_hdr = &elf_symtab_hdr (ibfd);
9162 locsymcount = symtab_hdr->sh_info;
9163 end_lgot_ents = lgot_ents + locsymcount;
9164 local_plt = (struct plt_entry **) end_lgot_ents;
9165 end_local_plt = local_plt + locsymcount;
9166 lgot_masks = (unsigned char *) end_local_plt;
9167 s = ppc64_elf_tdata (ibfd)->got;
9168 srel = ppc64_elf_tdata (ibfd)->relgot;
9169 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9171 struct got_entry **pent, *ent;
9174 while ((ent = *pent) != NULL)
9175 if (ent->got.refcount > 0)
9177 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9179 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9184 unsigned int num = 1;
9185 ent->got.offset = s->size;
9186 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9190 srel->size += num * sizeof (Elf64_External_Rela);
9191 else if ((*lgot_masks & PLT_IFUNC) != 0)
9194 += num * sizeof (Elf64_External_Rela);
9196 += num * sizeof (Elf64_External_Rela);
9205 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9206 for (; local_plt < end_local_plt; ++local_plt)
9208 struct plt_entry *ent;
9210 for (ent = *local_plt; ent != NULL; ent = ent->next)
9211 if (ent->plt.refcount > 0)
9214 ent->plt.offset = s->size;
9215 s->size += PLT_ENTRY_SIZE;
9217 htab->reliplt->size += sizeof (Elf64_External_Rela);
9220 ent->plt.offset = (bfd_vma) -1;
9224 /* Allocate global sym .plt and .got entries, and space for global
9225 sym dynamic relocs. */
9226 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9229 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9231 struct got_entry *ent;
9233 if (!is_ppc64_elf (ibfd))
9236 ent = ppc64_tlsld_got (ibfd);
9237 if (ent->got.refcount > 0)
9239 if (!htab->do_multi_toc && first_tlsld != NULL)
9241 ent->is_indirect = TRUE;
9242 ent->got.ent = first_tlsld;
9246 if (first_tlsld == NULL)
9248 s = ppc64_elf_tdata (ibfd)->got;
9249 ent->got.offset = s->size;
9254 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9255 srel->size += sizeof (Elf64_External_Rela);
9260 ent->got.offset = (bfd_vma) -1;
9263 /* We now have determined the sizes of the various dynamic sections.
9264 Allocate memory for them. */
9266 for (s = dynobj->sections; s != NULL; s = s->next)
9268 if ((s->flags & SEC_LINKER_CREATED) == 0)
9271 if (s == htab->brlt || s == htab->relbrlt)
9272 /* These haven't been allocated yet; don't strip. */
9274 else if (s == htab->got
9278 || s == htab->dynbss)
9280 /* Strip this section if we don't need it; see the
9283 else if (s == htab->glink_eh_frame)
9285 if (!bfd_is_abs_section (s->output_section))
9286 /* Not sized yet. */
9289 else if (CONST_STRNEQ (s->name, ".rela"))
9293 if (s != htab->relplt)
9296 /* We use the reloc_count field as a counter if we need
9297 to copy relocs into the output file. */
9303 /* It's not one of our sections, so don't allocate space. */
9309 /* If we don't need this section, strip it from the
9310 output file. This is mostly to handle .rela.bss and
9311 .rela.plt. We must create both sections in
9312 create_dynamic_sections, because they must be created
9313 before the linker maps input sections to output
9314 sections. The linker does that before
9315 adjust_dynamic_symbol is called, and it is that
9316 function which decides whether anything needs to go
9317 into these sections. */
9318 s->flags |= SEC_EXCLUDE;
9322 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9325 /* Allocate memory for the section contents. We use bfd_zalloc
9326 here in case unused entries are not reclaimed before the
9327 section's contents are written out. This should not happen,
9328 but this way if it does we get a R_PPC64_NONE reloc in .rela
9329 sections instead of garbage.
9330 We also rely on the section contents being zero when writing
9332 s->contents = bfd_zalloc (dynobj, s->size);
9333 if (s->contents == NULL)
9337 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9339 if (!is_ppc64_elf (ibfd))
9342 s = ppc64_elf_tdata (ibfd)->got;
9343 if (s != NULL && s != htab->got)
9346 s->flags |= SEC_EXCLUDE;
9349 s->contents = bfd_zalloc (ibfd, s->size);
9350 if (s->contents == NULL)
9354 s = ppc64_elf_tdata (ibfd)->relgot;
9358 s->flags |= SEC_EXCLUDE;
9361 s->contents = bfd_zalloc (ibfd, s->size);
9362 if (s->contents == NULL)
9370 if (htab->elf.dynamic_sections_created)
9372 /* Add some entries to the .dynamic section. We fill in the
9373 values later, in ppc64_elf_finish_dynamic_sections, but we
9374 must add the entries now so that we get the correct size for
9375 the .dynamic section. The DT_DEBUG entry is filled in by the
9376 dynamic linker and used by the debugger. */
9377 #define add_dynamic_entry(TAG, VAL) \
9378 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9380 if (info->executable)
9382 if (!add_dynamic_entry (DT_DEBUG, 0))
9386 if (htab->plt != NULL && htab->plt->size != 0)
9388 if (!add_dynamic_entry (DT_PLTGOT, 0)
9389 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9390 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9391 || !add_dynamic_entry (DT_JMPREL, 0)
9392 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9398 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9399 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9403 if (!htab->no_tls_get_addr_opt
9404 && htab->tls_get_addr_fd != NULL
9405 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9406 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9411 if (!add_dynamic_entry (DT_RELA, 0)
9412 || !add_dynamic_entry (DT_RELASZ, 0)
9413 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9416 /* If any dynamic relocs apply to a read-only section,
9417 then we need a DT_TEXTREL entry. */
9418 if ((info->flags & DF_TEXTREL) == 0)
9419 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9421 if ((info->flags & DF_TEXTREL) != 0)
9423 if (!add_dynamic_entry (DT_TEXTREL, 0))
9428 #undef add_dynamic_entry
9433 /* Determine the type of stub needed, if any, for a call. */
9435 static inline enum ppc_stub_type
9436 ppc_type_of_stub (asection *input_sec,
9437 const Elf_Internal_Rela *rel,
9438 struct ppc_link_hash_entry **hash,
9439 struct plt_entry **plt_ent,
9440 bfd_vma destination)
9442 struct ppc_link_hash_entry *h = *hash;
9444 bfd_vma branch_offset;
9445 bfd_vma max_branch_offset;
9446 enum elf_ppc64_reloc_type r_type;
9450 struct plt_entry *ent;
9451 struct ppc_link_hash_entry *fdh = h;
9453 && h->oh->is_func_descriptor)
9455 fdh = ppc_follow_link (h->oh);
9459 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9460 if (ent->addend == rel->r_addend
9461 && ent->plt.offset != (bfd_vma) -1)
9464 return ppc_stub_plt_call;
9467 /* Here, we know we don't have a plt entry. If we don't have a
9468 either a defined function descriptor or a defined entry symbol
9469 in a regular object file, then it is pointless trying to make
9470 any other type of stub. */
9471 if (!is_static_defined (&fdh->elf)
9472 && !is_static_defined (&h->elf))
9473 return ppc_stub_none;
9475 else if (elf_local_got_ents (input_sec->owner) != NULL)
9477 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9478 struct plt_entry **local_plt = (struct plt_entry **)
9479 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9480 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9482 if (local_plt[r_symndx] != NULL)
9484 struct plt_entry *ent;
9486 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9487 if (ent->addend == rel->r_addend
9488 && ent->plt.offset != (bfd_vma) -1)
9491 return ppc_stub_plt_call;
9496 /* Determine where the call point is. */
9497 location = (input_sec->output_offset
9498 + input_sec->output_section->vma
9501 branch_offset = destination - location;
9502 r_type = ELF64_R_TYPE (rel->r_info);
9504 /* Determine if a long branch stub is needed. */
9505 max_branch_offset = 1 << 25;
9506 if (r_type != R_PPC64_REL24)
9507 max_branch_offset = 1 << 15;
9509 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9510 /* We need a stub. Figure out whether a long_branch or plt_branch
9512 return ppc_stub_long_branch;
9514 return ppc_stub_none;
9517 /* With power7 weakly ordered memory model, it is possible for ld.so
9518 to update a plt entry in one thread and have another thread see a
9519 stale zero toc entry. To avoid this we need some sort of acquire
9520 barrier in the call stub. One solution is to make the load of the
9521 toc word seem to appear to depend on the load of the function entry
9522 word. Another solution is to test for r2 being zero, and branch to
9523 the appropriate glink entry if so.
9525 . fake dep barrier compare
9526 . ld 11,xxx(2) ld 11,xxx(2)
9528 . xor 11,11,11 ld 2,xxx+8(2)
9529 . add 2,2,11 cmpldi 2,0
9530 . ld 2,xxx+8(2) bnectr+
9531 . bctr b <glink_entry>
9533 The solution involving the compare turns out to be faster, so
9534 that's what we use unless the branch won't reach. */
9536 #define ALWAYS_USE_FAKE_DEP 0
9537 #define ALWAYS_EMIT_R2SAVE 0
9539 #define PPC_LO(v) ((v) & 0xffff)
9540 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9541 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9543 static inline unsigned int
9544 plt_stub_size (struct ppc_link_hash_table *htab,
9545 struct ppc_stub_hash_entry *stub_entry,
9548 unsigned size = PLT_CALL_STUB_SIZE;
9550 if (!(ALWAYS_EMIT_R2SAVE
9551 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
9553 if (!htab->plt_static_chain)
9555 if (htab->plt_thread_safe)
9557 if (PPC_HA (off) == 0)
9559 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
9561 if (stub_entry->h != NULL
9562 && (stub_entry->h == htab->tls_get_addr_fd
9563 || stub_entry->h == htab->tls_get_addr)
9564 && !htab->no_tls_get_addr_opt)
9569 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9570 then return the padding needed to do so. */
9571 static inline unsigned int
9572 plt_stub_pad (struct ppc_link_hash_table *htab,
9573 struct ppc_stub_hash_entry *stub_entry,
9576 int stub_align = 1 << htab->plt_stub_align;
9577 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
9578 bfd_vma stub_off = stub_entry->stub_sec->size;
9580 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
9581 > (stub_size & -stub_align))
9582 return stub_align - (stub_off & (stub_align - 1));
9586 /* Build a .plt call stub. */
9588 static inline bfd_byte *
9589 build_plt_stub (struct ppc_link_hash_table *htab,
9590 struct ppc_stub_hash_entry *stub_entry,
9591 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9593 bfd *obfd = htab->stub_bfd;
9594 bfd_boolean plt_static_chain = htab->plt_static_chain;
9595 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
9596 bfd_boolean use_fake_dep = plt_thread_safe;
9597 bfd_vma cmp_branch_off = 0;
9599 if (!ALWAYS_USE_FAKE_DEP
9601 && !(stub_entry->h != NULL
9602 && (stub_entry->h == htab->tls_get_addr_fd
9603 || stub_entry->h == htab->tls_get_addr)
9604 && !htab->no_tls_get_addr_opt))
9606 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
9607 bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9608 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
9611 if (pltindex > 32767)
9612 glinkoff += (pltindex - 32767) * 4;
9614 + htab->glink->output_offset
9615 + htab->glink->output_section->vma);
9616 from = (p - stub_entry->stub_sec->contents
9617 + 4 * (ALWAYS_EMIT_R2SAVE
9618 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9619 + 4 * (PPC_HA (offset) != 0)
9620 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
9622 + 4 * (plt_static_chain != 0)
9624 + stub_entry->stub_sec->output_offset
9625 + stub_entry->stub_sec->output_section->vma);
9626 cmp_branch_off = to - from;
9627 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
9630 if (PPC_HA (offset) != 0)
9634 if (ALWAYS_EMIT_R2SAVE
9635 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9637 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9638 r[1].r_offset = r[0].r_offset + 4;
9639 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9640 r[1].r_addend = r[0].r_addend;
9641 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9643 r[2].r_offset = r[1].r_offset + 4;
9644 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9645 r[2].r_addend = r[0].r_addend;
9649 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
9650 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9651 r[2].r_addend = r[0].r_addend + 8;
9652 if (plt_static_chain)
9654 r[3].r_offset = r[2].r_offset + 4;
9655 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9656 r[3].r_addend = r[0].r_addend + 16;
9660 if (ALWAYS_EMIT_R2SAVE
9661 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9662 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9663 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9664 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9665 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9667 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9670 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9673 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9674 bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4;
9676 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9677 if (plt_static_chain)
9678 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9684 if (ALWAYS_EMIT_R2SAVE
9685 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9687 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9688 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9690 r[1].r_offset = r[0].r_offset + 4;
9691 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9692 r[1].r_addend = r[0].r_addend;
9696 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
9697 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9698 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
9699 if (plt_static_chain)
9701 r[2].r_offset = r[1].r_offset + 4;
9702 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9703 r[2].r_addend = r[0].r_addend + 8;
9707 if (ALWAYS_EMIT_R2SAVE
9708 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9709 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9710 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9711 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9713 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9716 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9719 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9720 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
9722 if (plt_static_chain)
9723 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9724 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9726 if (plt_thread_safe && !use_fake_dep)
9728 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
9729 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
9730 bfd_put_32 (obfd, B_DOT + cmp_branch_off, p), p += 4;
9733 bfd_put_32 (obfd, BCTR, p), p += 4;
9737 /* Build a special .plt call stub for __tls_get_addr. */
9739 #define LD_R11_0R3 0xe9630000
9740 #define LD_R12_0R3 0xe9830000
9741 #define MR_R0_R3 0x7c601b78
9742 #define CMPDI_R11_0 0x2c2b0000
9743 #define ADD_R3_R12_R13 0x7c6c6a14
9744 #define BEQLR 0x4d820020
9745 #define MR_R3_R0 0x7c030378
9746 #define MFLR_R11 0x7d6802a6
9747 #define STD_R11_0R1 0xf9610000
9748 #define BCTRL 0x4e800421
9749 #define LD_R11_0R1 0xe9610000
9750 #define LD_R2_0R1 0xe8410000
9751 #define MTLR_R11 0x7d6803a6
9753 static inline bfd_byte *
9754 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
9755 struct ppc_stub_hash_entry *stub_entry,
9756 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9758 bfd *obfd = htab->stub_bfd;
9760 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9761 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9762 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9763 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9764 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9765 bfd_put_32 (obfd, BEQLR, p), p += 4;
9766 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9767 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9768 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9771 r[0].r_offset += 9 * 4;
9772 p = build_plt_stub (htab, stub_entry, p, offset, r);
9773 bfd_put_32 (obfd, BCTRL, p - 4);
9775 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9776 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9777 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9778 bfd_put_32 (obfd, BLR, p), p += 4;
9783 static Elf_Internal_Rela *
9784 get_relocs (asection *sec, int count)
9786 Elf_Internal_Rela *relocs;
9787 struct bfd_elf_section_data *elfsec_data;
9789 elfsec_data = elf_section_data (sec);
9790 relocs = elfsec_data->relocs;
9793 bfd_size_type relsize;
9794 relsize = sec->reloc_count * sizeof (*relocs);
9795 relocs = bfd_alloc (sec->owner, relsize);
9798 elfsec_data->relocs = relocs;
9799 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9800 sizeof (Elf_Internal_Shdr));
9801 if (elfsec_data->rela.hdr == NULL)
9803 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9804 * sizeof (Elf64_External_Rela));
9805 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
9806 sec->reloc_count = 0;
9808 relocs += sec->reloc_count;
9809 sec->reloc_count += count;
9814 get_r2off (struct bfd_link_info *info,
9815 struct ppc_stub_hash_entry *stub_entry)
9817 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9818 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9822 /* Support linking -R objects. Get the toc pointer from the
9825 asection *opd = stub_entry->h->elf.root.u.def.section;
9826 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9828 if (strcmp (opd->name, ".opd") != 0
9829 || opd->reloc_count != 0)
9831 info->callbacks->einfo (_("%P: cannot find opd entry toc for %s\n"),
9832 stub_entry->h->elf.root.root.string);
9833 bfd_set_error (bfd_error_bad_value);
9836 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9838 r2off = bfd_get_64 (opd->owner, buf);
9839 r2off -= elf_gp (info->output_bfd);
9841 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9846 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9848 struct ppc_stub_hash_entry *stub_entry;
9849 struct ppc_branch_hash_entry *br_entry;
9850 struct bfd_link_info *info;
9851 struct ppc_link_hash_table *htab;
9856 Elf_Internal_Rela *r;
9859 /* Massage our args to the form they really have. */
9860 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9863 htab = ppc_hash_table (info);
9867 /* Make a note of the offset within the stubs for this entry. */
9868 stub_entry->stub_offset = stub_entry->stub_sec->size;
9869 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9871 htab->stub_count[stub_entry->stub_type - 1] += 1;
9872 switch (stub_entry->stub_type)
9874 case ppc_stub_long_branch:
9875 case ppc_stub_long_branch_r2off:
9876 /* Branches are relative. This is where we are going to. */
9877 off = dest = (stub_entry->target_value
9878 + stub_entry->target_section->output_offset
9879 + stub_entry->target_section->output_section->vma);
9881 /* And this is where we are coming from. */
9882 off -= (stub_entry->stub_offset
9883 + stub_entry->stub_sec->output_offset
9884 + stub_entry->stub_sec->output_section->vma);
9887 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9889 bfd_vma r2off = get_r2off (info, stub_entry);
9893 htab->stub_error = TRUE;
9896 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9899 if (PPC_HA (r2off) != 0)
9902 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9905 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9909 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9911 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9913 info->callbacks->einfo (_("%P: long branch stub `%s' offset overflow\n"),
9914 stub_entry->root.string);
9915 htab->stub_error = TRUE;
9919 if (info->emitrelocations)
9921 r = get_relocs (stub_entry->stub_sec, 1);
9924 r->r_offset = loc - stub_entry->stub_sec->contents;
9925 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9927 if (stub_entry->h != NULL)
9929 struct elf_link_hash_entry **hashes;
9930 unsigned long symndx;
9931 struct ppc_link_hash_entry *h;
9933 hashes = elf_sym_hashes (htab->stub_bfd);
9936 bfd_size_type hsize;
9938 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9939 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9942 elf_sym_hashes (htab->stub_bfd) = hashes;
9943 htab->stub_globals = 1;
9945 symndx = htab->stub_globals++;
9947 hashes[symndx] = &h->elf;
9948 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9949 if (h->oh != NULL && h->oh->is_func)
9950 h = ppc_follow_link (h->oh);
9951 if (h->elf.root.u.def.section != stub_entry->target_section)
9952 /* H is an opd symbol. The addend must be zero. */
9956 off = (h->elf.root.u.def.value
9957 + h->elf.root.u.def.section->output_offset
9958 + h->elf.root.u.def.section->output_section->vma);
9965 case ppc_stub_plt_branch:
9966 case ppc_stub_plt_branch_r2off:
9967 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9968 stub_entry->root.string + 9,
9970 if (br_entry == NULL)
9972 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
9973 stub_entry->root.string);
9974 htab->stub_error = TRUE;
9978 dest = (stub_entry->target_value
9979 + stub_entry->target_section->output_offset
9980 + stub_entry->target_section->output_section->vma);
9982 bfd_put_64 (htab->brlt->owner, dest,
9983 htab->brlt->contents + br_entry->offset);
9985 if (br_entry->iter == htab->stub_iteration)
9989 if (htab->relbrlt != NULL)
9991 /* Create a reloc for the branch lookup table entry. */
9992 Elf_Internal_Rela rela;
9995 rela.r_offset = (br_entry->offset
9996 + htab->brlt->output_offset
9997 + htab->brlt->output_section->vma);
9998 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9999 rela.r_addend = dest;
10001 rl = htab->relbrlt->contents;
10002 rl += (htab->relbrlt->reloc_count++
10003 * sizeof (Elf64_External_Rela));
10004 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10006 else if (info->emitrelocations)
10008 r = get_relocs (htab->brlt, 1);
10011 /* brlt, being SEC_LINKER_CREATED does not go through the
10012 normal reloc processing. Symbols and offsets are not
10013 translated from input file to output file form, so
10014 set up the offset per the output file. */
10015 r->r_offset = (br_entry->offset
10016 + htab->brlt->output_offset
10017 + htab->brlt->output_section->vma);
10018 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10019 r->r_addend = dest;
10023 dest = (br_entry->offset
10024 + htab->brlt->output_offset
10025 + htab->brlt->output_section->vma);
10028 - elf_gp (htab->brlt->output_section->owner)
10029 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10031 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10033 info->callbacks->einfo
10034 (_("%P: linkage table error against `%s'\n"),
10035 stub_entry->root.string);
10036 bfd_set_error (bfd_error_bad_value);
10037 htab->stub_error = TRUE;
10041 if (info->emitrelocations)
10043 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10046 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10047 if (bfd_big_endian (info->output_bfd))
10048 r[0].r_offset += 2;
10049 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10050 r[0].r_offset += 4;
10051 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10052 r[0].r_addend = dest;
10053 if (PPC_HA (off) != 0)
10055 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10056 r[1].r_offset = r[0].r_offset + 4;
10057 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10058 r[1].r_addend = r[0].r_addend;
10062 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10064 if (PPC_HA (off) != 0)
10067 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10069 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10074 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10079 bfd_vma r2off = get_r2off (info, stub_entry);
10083 htab->stub_error = TRUE;
10087 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10090 if (PPC_HA (off) != 0)
10093 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10095 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10100 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10104 if (PPC_HA (r2off) != 0)
10107 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10110 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10113 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
10115 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10118 case ppc_stub_plt_call:
10119 case ppc_stub_plt_call_r2save:
10120 if (stub_entry->h != NULL
10121 && stub_entry->h->is_func_descriptor
10122 && stub_entry->h->oh != NULL)
10124 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10126 /* If the old-ABI "dot-symbol" is undefined make it weak so
10127 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10128 FIXME: We used to define the symbol on one of the call
10129 stubs instead, which is why we test symbol section id
10130 against htab->top_id in various places. Likely all
10131 these checks could now disappear. */
10132 if (fh->elf.root.type == bfd_link_hash_undefined)
10133 fh->elf.root.type = bfd_link_hash_undefweak;
10134 /* Stop undo_symbol_twiddle changing it back to undefined. */
10135 fh->was_undefined = 0;
10138 /* Now build the stub. */
10139 dest = stub_entry->plt_ent->plt.offset & ~1;
10140 if (dest >= (bfd_vma) -2)
10144 if (!htab->elf.dynamic_sections_created
10145 || stub_entry->h == NULL
10146 || stub_entry->h->elf.dynindx == -1)
10149 dest += plt->output_offset + plt->output_section->vma;
10151 if (stub_entry->h == NULL
10152 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10154 Elf_Internal_Rela rela;
10157 rela.r_offset = dest;
10158 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10159 rela.r_addend = (stub_entry->target_value
10160 + stub_entry->target_section->output_offset
10161 + stub_entry->target_section->output_section->vma);
10163 rl = (htab->reliplt->contents
10164 + (htab->reliplt->reloc_count++
10165 * sizeof (Elf64_External_Rela)));
10166 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10167 stub_entry->plt_ent->plt.offset |= 1;
10171 - elf_gp (plt->output_section->owner)
10172 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10174 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10176 info->callbacks->einfo
10177 (_("%P: linkage table error against `%s'\n"),
10178 stub_entry->h != NULL
10179 ? stub_entry->h->elf.root.root.string
10181 bfd_set_error (bfd_error_bad_value);
10182 htab->stub_error = TRUE;
10186 if (htab->plt_stub_align != 0)
10188 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10190 stub_entry->stub_sec->size += pad;
10191 stub_entry->stub_offset = stub_entry->stub_sec->size;
10196 if (info->emitrelocations)
10198 r = get_relocs (stub_entry->stub_sec,
10200 + (PPC_HA (off) != 0)
10201 + (htab->plt_static_chain
10202 && PPC_HA (off + 16) == PPC_HA (off))));
10205 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10206 if (bfd_big_endian (info->output_bfd))
10207 r[0].r_offset += 2;
10208 r[0].r_addend = dest;
10210 if (stub_entry->h != NULL
10211 && (stub_entry->h == htab->tls_get_addr_fd
10212 || stub_entry->h == htab->tls_get_addr)
10213 && !htab->no_tls_get_addr_opt)
10214 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10216 p = build_plt_stub (htab, stub_entry, loc, off, r);
10225 stub_entry->stub_sec->size += size;
10227 if (htab->emit_stub_syms)
10229 struct elf_link_hash_entry *h;
10232 const char *const stub_str[] = { "long_branch",
10233 "long_branch_r2off",
10235 "plt_branch_r2off",
10239 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10240 len2 = strlen (stub_entry->root.string);
10241 name = bfd_malloc (len1 + len2 + 2);
10244 memcpy (name, stub_entry->root.string, 9);
10245 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10246 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10247 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10250 if (h->root.type == bfd_link_hash_new)
10252 h->root.type = bfd_link_hash_defined;
10253 h->root.u.def.section = stub_entry->stub_sec;
10254 h->root.u.def.value = stub_entry->stub_offset;
10255 h->ref_regular = 1;
10256 h->def_regular = 1;
10257 h->ref_regular_nonweak = 1;
10258 h->forced_local = 1;
10266 /* As above, but don't actually build the stub. Just bump offset so
10267 we know stub section sizes, and select plt_branch stubs where
10268 long_branch stubs won't do. */
10271 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10273 struct ppc_stub_hash_entry *stub_entry;
10274 struct bfd_link_info *info;
10275 struct ppc_link_hash_table *htab;
10279 /* Massage our args to the form they really have. */
10280 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10283 htab = ppc_hash_table (info);
10287 if (stub_entry->stub_type == ppc_stub_plt_call
10288 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10291 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10292 if (off >= (bfd_vma) -2)
10295 if (!htab->elf.dynamic_sections_created
10296 || stub_entry->h == NULL
10297 || stub_entry->h->elf.dynindx == -1)
10299 off += (plt->output_offset
10300 + plt->output_section->vma
10301 - elf_gp (plt->output_section->owner)
10302 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10304 size = plt_stub_size (htab, stub_entry, off);
10305 if (htab->plt_stub_align)
10306 size += plt_stub_pad (htab, stub_entry, off);
10307 if (info->emitrelocations)
10309 stub_entry->stub_sec->reloc_count
10311 + (PPC_HA (off) != 0)
10312 + (htab->plt_static_chain
10313 && PPC_HA (off + 16) == PPC_HA (off)));
10314 stub_entry->stub_sec->flags |= SEC_RELOC;
10319 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10323 off = (stub_entry->target_value
10324 + stub_entry->target_section->output_offset
10325 + stub_entry->target_section->output_section->vma);
10326 off -= (stub_entry->stub_sec->size
10327 + stub_entry->stub_sec->output_offset
10328 + stub_entry->stub_sec->output_section->vma);
10330 /* Reset the stub type from the plt variant in case we now
10331 can reach with a shorter stub. */
10332 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10333 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10336 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10338 r2off = get_r2off (info, stub_entry);
10341 htab->stub_error = TRUE;
10345 if (PPC_HA (r2off) != 0)
10350 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10351 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10353 struct ppc_branch_hash_entry *br_entry;
10355 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10356 stub_entry->root.string + 9,
10358 if (br_entry == NULL)
10360 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10361 stub_entry->root.string);
10362 htab->stub_error = TRUE;
10366 if (br_entry->iter != htab->stub_iteration)
10368 br_entry->iter = htab->stub_iteration;
10369 br_entry->offset = htab->brlt->size;
10370 htab->brlt->size += 8;
10372 if (htab->relbrlt != NULL)
10373 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10374 else if (info->emitrelocations)
10376 htab->brlt->reloc_count += 1;
10377 htab->brlt->flags |= SEC_RELOC;
10381 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10382 off = (br_entry->offset
10383 + htab->brlt->output_offset
10384 + htab->brlt->output_section->vma
10385 - elf_gp (htab->brlt->output_section->owner)
10386 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10388 if (info->emitrelocations)
10390 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10391 stub_entry->stub_sec->flags |= SEC_RELOC;
10394 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10397 if (PPC_HA (off) != 0)
10403 if (PPC_HA (off) != 0)
10406 if (PPC_HA (r2off) != 0)
10410 else if (info->emitrelocations)
10412 stub_entry->stub_sec->reloc_count += 1;
10413 stub_entry->stub_sec->flags |= SEC_RELOC;
10417 stub_entry->stub_sec->size += size;
10421 /* Set up various things so that we can make a list of input sections
10422 for each output section included in the link. Returns -1 on error,
10423 0 when no stubs will be needed, and 1 on success. */
10426 ppc64_elf_setup_section_lists
10427 (struct bfd_link_info *info,
10428 asection *(*add_stub_section) (const char *, asection *),
10429 void (*layout_sections_again) (void))
10432 int top_id, top_index, id;
10434 asection **input_list;
10436 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10440 /* Stash our params away. */
10441 htab->add_stub_section = add_stub_section;
10442 htab->layout_sections_again = layout_sections_again;
10444 if (htab->brlt == NULL)
10447 /* Find the top input section id. */
10448 for (input_bfd = info->input_bfds, top_id = 3;
10450 input_bfd = input_bfd->link_next)
10452 for (section = input_bfd->sections;
10454 section = section->next)
10456 if (top_id < section->id)
10457 top_id = section->id;
10461 htab->top_id = top_id;
10462 amt = sizeof (struct map_stub) * (top_id + 1);
10463 htab->stub_group = bfd_zmalloc (amt);
10464 if (htab->stub_group == NULL)
10467 /* Set toc_off for com, und, abs and ind sections. */
10468 for (id = 0; id < 3; id++)
10469 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10471 /* We can't use output_bfd->section_count here to find the top output
10472 section index as some sections may have been removed, and
10473 strip_excluded_output_sections doesn't renumber the indices. */
10474 for (section = info->output_bfd->sections, top_index = 0;
10476 section = section->next)
10478 if (top_index < section->index)
10479 top_index = section->index;
10482 htab->top_index = top_index;
10483 amt = sizeof (asection *) * (top_index + 1);
10484 input_list = bfd_zmalloc (amt);
10485 htab->input_list = input_list;
10486 if (input_list == NULL)
10492 /* Set up for first pass at multitoc partitioning. */
10495 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10497 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10499 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10500 htab->toc_curr = elf_gp (info->output_bfd);
10501 htab->toc_bfd = NULL;
10502 htab->toc_first_sec = NULL;
10505 /* The linker repeatedly calls this function for each TOC input section
10506 and linker generated GOT section. Group input bfds such that the toc
10507 within a group is less than 64k in size. */
10510 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10512 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10513 bfd_vma addr, off, limit;
10518 if (!htab->second_toc_pass)
10520 /* Keep track of the first .toc or .got section for this input bfd. */
10521 if (htab->toc_bfd != isec->owner)
10523 htab->toc_bfd = isec->owner;
10524 htab->toc_first_sec = isec;
10527 addr = isec->output_offset + isec->output_section->vma;
10528 off = addr - htab->toc_curr;
10529 limit = 0x80008000;
10530 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10532 if (off + isec->size > limit)
10534 addr = (htab->toc_first_sec->output_offset
10535 + htab->toc_first_sec->output_section->vma);
10536 htab->toc_curr = addr;
10539 /* toc_curr is the base address of this toc group. Set elf_gp
10540 for the input section to be the offset relative to the
10541 output toc base plus 0x8000. Making the input elf_gp an
10542 offset allows us to move the toc as a whole without
10543 recalculating input elf_gp. */
10544 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10545 off += TOC_BASE_OFF;
10547 /* Die if someone uses a linker script that doesn't keep input
10548 file .toc and .got together. */
10549 if (elf_gp (isec->owner) != 0
10550 && elf_gp (isec->owner) != off)
10553 elf_gp (isec->owner) = off;
10557 /* During the second pass toc_first_sec points to the start of
10558 a toc group, and toc_curr is used to track the old elf_gp.
10559 We use toc_bfd to ensure we only look at each bfd once. */
10560 if (htab->toc_bfd == isec->owner)
10562 htab->toc_bfd = isec->owner;
10564 if (htab->toc_first_sec == NULL
10565 || htab->toc_curr != elf_gp (isec->owner))
10567 htab->toc_curr = elf_gp (isec->owner);
10568 htab->toc_first_sec = isec;
10570 addr = (htab->toc_first_sec->output_offset
10571 + htab->toc_first_sec->output_section->vma);
10572 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10573 elf_gp (isec->owner) = off;
10578 /* Called via elf_link_hash_traverse to merge GOT entries for global
10582 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10584 if (h->root.type == bfd_link_hash_indirect)
10587 merge_got_entries (&h->got.glist);
10592 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10596 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10598 struct got_entry *gent;
10600 if (h->root.type == bfd_link_hash_indirect)
10603 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10604 if (!gent->is_indirect)
10605 allocate_got (h, (struct bfd_link_info *) inf, gent);
10609 /* Called on the first multitoc pass after the last call to
10610 ppc64_elf_next_toc_section. This function removes duplicate GOT
10614 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10616 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10617 struct bfd *ibfd, *ibfd2;
10618 bfd_boolean done_something;
10620 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10622 if (!htab->do_multi_toc)
10625 /* Merge global sym got entries within a toc group. */
10626 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10628 /* And tlsld_got. */
10629 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10631 struct got_entry *ent, *ent2;
10633 if (!is_ppc64_elf (ibfd))
10636 ent = ppc64_tlsld_got (ibfd);
10637 if (!ent->is_indirect
10638 && ent->got.offset != (bfd_vma) -1)
10640 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10642 if (!is_ppc64_elf (ibfd2))
10645 ent2 = ppc64_tlsld_got (ibfd2);
10646 if (!ent2->is_indirect
10647 && ent2->got.offset != (bfd_vma) -1
10648 && elf_gp (ibfd2) == elf_gp (ibfd))
10650 ent2->is_indirect = TRUE;
10651 ent2->got.ent = ent;
10657 /* Zap sizes of got sections. */
10658 htab->reliplt->rawsize = htab->reliplt->size;
10659 htab->reliplt->size -= htab->got_reli_size;
10660 htab->got_reli_size = 0;
10662 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10664 asection *got, *relgot;
10666 if (!is_ppc64_elf (ibfd))
10669 got = ppc64_elf_tdata (ibfd)->got;
10672 got->rawsize = got->size;
10674 relgot = ppc64_elf_tdata (ibfd)->relgot;
10675 relgot->rawsize = relgot->size;
10680 /* Now reallocate the got, local syms first. We don't need to
10681 allocate section contents again since we never increase size. */
10682 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10684 struct got_entry **lgot_ents;
10685 struct got_entry **end_lgot_ents;
10686 struct plt_entry **local_plt;
10687 struct plt_entry **end_local_plt;
10688 unsigned char *lgot_masks;
10689 bfd_size_type locsymcount;
10690 Elf_Internal_Shdr *symtab_hdr;
10691 asection *s, *srel;
10693 if (!is_ppc64_elf (ibfd))
10696 lgot_ents = elf_local_got_ents (ibfd);
10700 symtab_hdr = &elf_symtab_hdr (ibfd);
10701 locsymcount = symtab_hdr->sh_info;
10702 end_lgot_ents = lgot_ents + locsymcount;
10703 local_plt = (struct plt_entry **) end_lgot_ents;
10704 end_local_plt = local_plt + locsymcount;
10705 lgot_masks = (unsigned char *) end_local_plt;
10706 s = ppc64_elf_tdata (ibfd)->got;
10707 srel = ppc64_elf_tdata (ibfd)->relgot;
10708 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10710 struct got_entry *ent;
10712 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10714 unsigned int num = 1;
10715 ent->got.offset = s->size;
10716 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10718 s->size += num * 8;
10720 srel->size += num * sizeof (Elf64_External_Rela);
10721 else if ((*lgot_masks & PLT_IFUNC) != 0)
10723 htab->reliplt->size
10724 += num * sizeof (Elf64_External_Rela);
10725 htab->got_reli_size
10726 += num * sizeof (Elf64_External_Rela);
10732 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10734 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10736 struct got_entry *ent;
10738 if (!is_ppc64_elf (ibfd))
10741 ent = ppc64_tlsld_got (ibfd);
10742 if (!ent->is_indirect
10743 && ent->got.offset != (bfd_vma) -1)
10745 asection *s = ppc64_elf_tdata (ibfd)->got;
10746 ent->got.offset = s->size;
10750 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10751 srel->size += sizeof (Elf64_External_Rela);
10756 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10757 if (!done_something)
10758 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10762 if (!is_ppc64_elf (ibfd))
10765 got = ppc64_elf_tdata (ibfd)->got;
10768 done_something = got->rawsize != got->size;
10769 if (done_something)
10774 if (done_something)
10775 (*htab->layout_sections_again) ();
10777 /* Set up for second pass over toc sections to recalculate elf_gp
10778 on input sections. */
10779 htab->toc_bfd = NULL;
10780 htab->toc_first_sec = NULL;
10781 htab->second_toc_pass = TRUE;
10782 return done_something;
10785 /* Called after second pass of multitoc partitioning. */
10788 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10790 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10792 /* After the second pass, toc_curr tracks the TOC offset used
10793 for code sections below in ppc64_elf_next_input_section. */
10794 htab->toc_curr = TOC_BASE_OFF;
10797 /* No toc references were found in ISEC. If the code in ISEC makes no
10798 calls, then there's no need to use toc adjusting stubs when branching
10799 into ISEC. Actually, indirect calls from ISEC are OK as they will
10800 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10801 needed, and 2 if a cyclical call-graph was found but no other reason
10802 for a stub was detected. If called from the top level, a return of
10803 2 means the same as a return of 0. */
10806 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10810 /* Mark this section as checked. */
10811 isec->call_check_done = 1;
10813 /* We know none of our code bearing sections will need toc stubs. */
10814 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10817 if (isec->size == 0)
10820 if (isec->output_section == NULL)
10824 if (isec->reloc_count != 0)
10826 Elf_Internal_Rela *relstart, *rel;
10827 Elf_Internal_Sym *local_syms;
10828 struct ppc_link_hash_table *htab;
10830 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10831 info->keep_memory);
10832 if (relstart == NULL)
10835 /* Look for branches to outside of this section. */
10837 htab = ppc_hash_table (info);
10841 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10843 enum elf_ppc64_reloc_type r_type;
10844 unsigned long r_symndx;
10845 struct elf_link_hash_entry *h;
10846 struct ppc_link_hash_entry *eh;
10847 Elf_Internal_Sym *sym;
10849 struct _opd_sec_data *opd;
10853 r_type = ELF64_R_TYPE (rel->r_info);
10854 if (r_type != R_PPC64_REL24
10855 && r_type != R_PPC64_REL14
10856 && r_type != R_PPC64_REL14_BRTAKEN
10857 && r_type != R_PPC64_REL14_BRNTAKEN)
10860 r_symndx = ELF64_R_SYM (rel->r_info);
10861 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10868 /* Calls to dynamic lib functions go through a plt call stub
10870 eh = (struct ppc_link_hash_entry *) h;
10872 && (eh->elf.plt.plist != NULL
10874 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10880 if (sym_sec == NULL)
10881 /* Ignore other undefined symbols. */
10884 /* Assume branches to other sections not included in the
10885 link need stubs too, to cover -R and absolute syms. */
10886 if (sym_sec->output_section == NULL)
10893 sym_value = sym->st_value;
10896 if (h->root.type != bfd_link_hash_defined
10897 && h->root.type != bfd_link_hash_defweak)
10899 sym_value = h->root.u.def.value;
10901 sym_value += rel->r_addend;
10903 /* If this branch reloc uses an opd sym, find the code section. */
10904 opd = get_opd_info (sym_sec);
10907 if (h == NULL && opd->adjust != NULL)
10911 adjust = opd->adjust[sym->st_value / 8];
10913 /* Assume deleted functions won't ever be called. */
10915 sym_value += adjust;
10918 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10919 if (dest == (bfd_vma) -1)
10924 + sym_sec->output_offset
10925 + sym_sec->output_section->vma);
10927 /* Ignore branch to self. */
10928 if (sym_sec == isec)
10931 /* If the called function uses the toc, we need a stub. */
10932 if (sym_sec->has_toc_reloc
10933 || sym_sec->makes_toc_func_call)
10939 /* Assume any branch that needs a long branch stub might in fact
10940 need a plt_branch stub. A plt_branch stub uses r2. */
10941 else if (dest - (isec->output_offset
10942 + isec->output_section->vma
10943 + rel->r_offset) + (1 << 25) >= (2 << 25))
10949 /* If calling back to a section in the process of being
10950 tested, we can't say for sure that no toc adjusting stubs
10951 are needed, so don't return zero. */
10952 else if (sym_sec->call_check_in_progress)
10955 /* Branches to another section that itself doesn't have any TOC
10956 references are OK. Recursively call ourselves to check. */
10957 else if (!sym_sec->call_check_done)
10961 /* Mark current section as indeterminate, so that other
10962 sections that call back to current won't be marked as
10964 isec->call_check_in_progress = 1;
10965 recur = toc_adjusting_stub_needed (info, sym_sec);
10966 isec->call_check_in_progress = 0;
10977 if (local_syms != NULL
10978 && (elf_symtab_hdr (isec->owner).contents
10979 != (unsigned char *) local_syms))
10981 if (elf_section_data (isec)->relocs != relstart)
10986 && isec->map_head.s != NULL
10987 && (strcmp (isec->output_section->name, ".init") == 0
10988 || strcmp (isec->output_section->name, ".fini") == 0))
10990 if (isec->map_head.s->has_toc_reloc
10991 || isec->map_head.s->makes_toc_func_call)
10993 else if (!isec->map_head.s->call_check_done)
10996 isec->call_check_in_progress = 1;
10997 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
10998 isec->call_check_in_progress = 0;
11005 isec->makes_toc_func_call = 1;
11010 /* The linker repeatedly calls this function for each input section,
11011 in the order that input sections are linked into output sections.
11012 Build lists of input sections to determine groupings between which
11013 we may insert linker stubs. */
11016 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11018 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11023 if ((isec->output_section->flags & SEC_CODE) != 0
11024 && isec->output_section->index <= htab->top_index)
11026 asection **list = htab->input_list + isec->output_section->index;
11027 /* Steal the link_sec pointer for our list. */
11028 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11029 /* This happens to make the list in reverse order,
11030 which is what we want. */
11031 PREV_SEC (isec) = *list;
11035 if (htab->multi_toc_needed)
11037 /* If a code section has a function that uses the TOC then we need
11038 to use the right TOC (obviously). Also, make sure that .opd gets
11039 the correct TOC value for R_PPC64_TOC relocs that don't have or
11040 can't find their function symbol (shouldn't ever happen now).
11041 Also specially treat .fixup for the linux kernel. .fixup
11042 contains branches, but only back to the function that hit an
11044 if (isec->has_toc_reloc
11045 || (isec->flags & SEC_CODE) == 0
11046 || strcmp (isec->name, ".fixup") == 0)
11048 if (elf_gp (isec->owner) != 0)
11049 htab->toc_curr = elf_gp (isec->owner);
11053 if (!isec->call_check_done
11054 && toc_adjusting_stub_needed (info, isec) < 0)
11056 /* If we make a local call from this section, ie. a branch
11057 without a following nop, then we have no place to put a
11058 toc restoring insn. We must use the same toc group as
11060 Testing makes_toc_func_call actually tests for *any*
11061 calls to functions that need a good toc pointer. A more
11062 precise test would be better, as this one will set
11063 incorrect values for pasted .init/.fini fragments.
11064 (Fixed later in check_pasted_section.) */
11065 if (isec->makes_toc_func_call
11066 && elf_gp (isec->owner) != 0)
11067 htab->toc_curr = elf_gp (isec->owner);
11071 /* Functions that don't use the TOC can belong in any TOC group.
11072 Use the last TOC base. */
11073 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11077 /* Check that all .init and .fini sections use the same toc, if they
11078 have toc relocs. */
11081 check_pasted_section (struct bfd_link_info *info, const char *name)
11083 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11087 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11088 bfd_vma toc_off = 0;
11091 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11092 if (i->has_toc_reloc)
11095 toc_off = htab->stub_group[i->id].toc_off;
11096 else if (toc_off != htab->stub_group[i->id].toc_off)
11101 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11102 if (i->makes_toc_func_call)
11104 toc_off = htab->stub_group[i->id].toc_off;
11108 /* Make sure the whole pasted function uses the same toc offset. */
11110 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11111 htab->stub_group[i->id].toc_off = toc_off;
11117 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11119 return (check_pasted_section (info, ".init")
11120 & check_pasted_section (info, ".fini"));
11123 /* See whether we can group stub sections together. Grouping stub
11124 sections may result in fewer stubs. More importantly, we need to
11125 put all .init* and .fini* stubs at the beginning of the .init or
11126 .fini output sections respectively, because glibc splits the
11127 _init and _fini functions into multiple parts. Putting a stub in
11128 the middle of a function is not a good idea. */
11131 group_sections (struct ppc_link_hash_table *htab,
11132 bfd_size_type stub_group_size,
11133 bfd_boolean stubs_always_before_branch)
11136 bfd_size_type stub14_group_size;
11137 bfd_boolean suppress_size_errors;
11139 suppress_size_errors = FALSE;
11140 stub14_group_size = stub_group_size;
11141 if (stub_group_size == 1)
11143 /* Default values. */
11144 if (stubs_always_before_branch)
11146 stub_group_size = 0x1e00000;
11147 stub14_group_size = 0x7800;
11151 stub_group_size = 0x1c00000;
11152 stub14_group_size = 0x7000;
11154 suppress_size_errors = TRUE;
11157 list = htab->input_list + htab->top_index;
11160 asection *tail = *list;
11161 while (tail != NULL)
11165 bfd_size_type total;
11166 bfd_boolean big_sec;
11170 total = tail->size;
11171 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11172 && ppc64_elf_section_data (tail)->has_14bit_branch
11173 ? stub14_group_size : stub_group_size);
11174 if (big_sec && !suppress_size_errors)
11175 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11176 tail->owner, tail);
11177 curr_toc = htab->stub_group[tail->id].toc_off;
11179 while ((prev = PREV_SEC (curr)) != NULL
11180 && ((total += curr->output_offset - prev->output_offset)
11181 < (ppc64_elf_section_data (prev) != NULL
11182 && ppc64_elf_section_data (prev)->has_14bit_branch
11183 ? stub14_group_size : stub_group_size))
11184 && htab->stub_group[prev->id].toc_off == curr_toc)
11187 /* OK, the size from the start of CURR to the end is less
11188 than stub_group_size and thus can be handled by one stub
11189 section. (or the tail section is itself larger than
11190 stub_group_size, in which case we may be toast.) We
11191 should really be keeping track of the total size of stubs
11192 added here, as stubs contribute to the final output
11193 section size. That's a little tricky, and this way will
11194 only break if stubs added make the total size more than
11195 2^25, ie. for the default stub_group_size, if stubs total
11196 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11199 prev = PREV_SEC (tail);
11200 /* Set up this stub group. */
11201 htab->stub_group[tail->id].link_sec = curr;
11203 while (tail != curr && (tail = prev) != NULL);
11205 /* But wait, there's more! Input sections up to stub_group_size
11206 bytes before the stub section can be handled by it too.
11207 Don't do this if we have a really large section after the
11208 stubs, as adding more stubs increases the chance that
11209 branches may not reach into the stub section. */
11210 if (!stubs_always_before_branch && !big_sec)
11213 while (prev != NULL
11214 && ((total += tail->output_offset - prev->output_offset)
11215 < (ppc64_elf_section_data (prev) != NULL
11216 && ppc64_elf_section_data (prev)->has_14bit_branch
11217 ? stub14_group_size : stub_group_size))
11218 && htab->stub_group[prev->id].toc_off == curr_toc)
11221 prev = PREV_SEC (tail);
11222 htab->stub_group[tail->id].link_sec = curr;
11228 while (list-- != htab->input_list);
11229 free (htab->input_list);
11233 static const unsigned char glink_eh_frame_cie[] =
11235 0, 0, 0, 16, /* length. */
11236 0, 0, 0, 0, /* id. */
11237 1, /* CIE version. */
11238 'z', 'R', 0, /* Augmentation string. */
11239 4, /* Code alignment. */
11240 0x78, /* Data alignment. */
11242 1, /* Augmentation size. */
11243 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11244 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11247 /* Stripping output sections is normally done before dynamic section
11248 symbols have been allocated. This function is called later, and
11249 handles cases like htab->brlt which is mapped to its own output
11253 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11255 if (isec->size == 0
11256 && isec->output_section->size == 0
11257 && !bfd_section_removed_from_list (info->output_bfd,
11258 isec->output_section)
11259 && elf_section_data (isec->output_section)->dynindx == 0)
11261 isec->output_section->flags |= SEC_EXCLUDE;
11262 bfd_section_list_remove (info->output_bfd, isec->output_section);
11263 info->output_bfd->section_count--;
11267 /* Determine and set the size of the stub section for a final link.
11269 The basic idea here is to examine all the relocations looking for
11270 PC-relative calls to a target that is unreachable with a "bl"
11274 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11275 bfd_boolean plt_static_chain, int plt_thread_safe,
11276 int plt_stub_align)
11278 bfd_size_type stub_group_size;
11279 bfd_boolean stubs_always_before_branch;
11280 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11285 htab->plt_static_chain = plt_static_chain;
11286 htab->plt_stub_align = plt_stub_align;
11287 if (plt_thread_safe == -1)
11289 const char *const thread_starter[] =
11293 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11295 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11296 "mq_notify", "create_timer",
11300 "GOMP_parallel_start",
11301 "GOMP_parallel_loop_static_start",
11302 "GOMP_parallel_loop_dynamic_start",
11303 "GOMP_parallel_loop_guided_start",
11304 "GOMP_parallel_loop_runtime_start",
11305 "GOMP_parallel_sections_start",
11309 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11311 struct elf_link_hash_entry *h;
11312 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11313 FALSE, FALSE, TRUE);
11314 plt_thread_safe = h != NULL && h->ref_regular;
11315 if (plt_thread_safe)
11319 htab->plt_thread_safe = plt_thread_safe;
11320 stubs_always_before_branch = group_size < 0;
11321 if (group_size < 0)
11322 stub_group_size = -group_size;
11324 stub_group_size = group_size;
11326 group_sections (htab, stub_group_size, stubs_always_before_branch);
11331 unsigned int bfd_indx;
11332 asection *stub_sec;
11334 htab->stub_iteration += 1;
11336 for (input_bfd = info->input_bfds, bfd_indx = 0;
11338 input_bfd = input_bfd->link_next, bfd_indx++)
11340 Elf_Internal_Shdr *symtab_hdr;
11342 Elf_Internal_Sym *local_syms = NULL;
11344 if (!is_ppc64_elf (input_bfd))
11347 /* We'll need the symbol table in a second. */
11348 symtab_hdr = &elf_symtab_hdr (input_bfd);
11349 if (symtab_hdr->sh_info == 0)
11352 /* Walk over each section attached to the input bfd. */
11353 for (section = input_bfd->sections;
11355 section = section->next)
11357 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11359 /* If there aren't any relocs, then there's nothing more
11361 if ((section->flags & SEC_RELOC) == 0
11362 || (section->flags & SEC_ALLOC) == 0
11363 || (section->flags & SEC_LOAD) == 0
11364 || (section->flags & SEC_CODE) == 0
11365 || section->reloc_count == 0)
11368 /* If this section is a link-once section that will be
11369 discarded, then don't create any stubs. */
11370 if (section->output_section == NULL
11371 || section->output_section->owner != info->output_bfd)
11374 /* Get the relocs. */
11376 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11377 info->keep_memory);
11378 if (internal_relocs == NULL)
11379 goto error_ret_free_local;
11381 /* Now examine each relocation. */
11382 irela = internal_relocs;
11383 irelaend = irela + section->reloc_count;
11384 for (; irela < irelaend; irela++)
11386 enum elf_ppc64_reloc_type r_type;
11387 unsigned int r_indx;
11388 enum ppc_stub_type stub_type;
11389 struct ppc_stub_hash_entry *stub_entry;
11390 asection *sym_sec, *code_sec;
11391 bfd_vma sym_value, code_value;
11392 bfd_vma destination;
11393 bfd_boolean ok_dest;
11394 struct ppc_link_hash_entry *hash;
11395 struct ppc_link_hash_entry *fdh;
11396 struct elf_link_hash_entry *h;
11397 Elf_Internal_Sym *sym;
11399 const asection *id_sec;
11400 struct _opd_sec_data *opd;
11401 struct plt_entry *plt_ent;
11403 r_type = ELF64_R_TYPE (irela->r_info);
11404 r_indx = ELF64_R_SYM (irela->r_info);
11406 if (r_type >= R_PPC64_max)
11408 bfd_set_error (bfd_error_bad_value);
11409 goto error_ret_free_internal;
11412 /* Only look for stubs on branch instructions. */
11413 if (r_type != R_PPC64_REL24
11414 && r_type != R_PPC64_REL14
11415 && r_type != R_PPC64_REL14_BRTAKEN
11416 && r_type != R_PPC64_REL14_BRNTAKEN)
11419 /* Now determine the call target, its name, value,
11421 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11422 r_indx, input_bfd))
11423 goto error_ret_free_internal;
11424 hash = (struct ppc_link_hash_entry *) h;
11431 sym_value = sym->st_value;
11434 else if (hash->elf.root.type == bfd_link_hash_defined
11435 || hash->elf.root.type == bfd_link_hash_defweak)
11437 sym_value = hash->elf.root.u.def.value;
11438 if (sym_sec->output_section != NULL)
11441 else if (hash->elf.root.type == bfd_link_hash_undefweak
11442 || hash->elf.root.type == bfd_link_hash_undefined)
11444 /* Recognise an old ABI func code entry sym, and
11445 use the func descriptor sym instead if it is
11447 if (hash->elf.root.root.string[0] == '.'
11448 && (fdh = lookup_fdh (hash, htab)) != NULL)
11450 if (fdh->elf.root.type == bfd_link_hash_defined
11451 || fdh->elf.root.type == bfd_link_hash_defweak)
11453 sym_sec = fdh->elf.root.u.def.section;
11454 sym_value = fdh->elf.root.u.def.value;
11455 if (sym_sec->output_section != NULL)
11464 bfd_set_error (bfd_error_bad_value);
11465 goto error_ret_free_internal;
11471 sym_value += irela->r_addend;
11472 destination = (sym_value
11473 + sym_sec->output_offset
11474 + sym_sec->output_section->vma);
11477 code_sec = sym_sec;
11478 code_value = sym_value;
11479 opd = get_opd_info (sym_sec);
11484 if (hash == NULL && opd->adjust != NULL)
11486 long adjust = opd->adjust[sym_value / 8];
11489 code_value += adjust;
11490 sym_value += adjust;
11492 dest = opd_entry_value (sym_sec, sym_value,
11493 &code_sec, &code_value);
11494 if (dest != (bfd_vma) -1)
11496 destination = dest;
11499 /* Fixup old ABI sym to point at code
11501 hash->elf.root.type = bfd_link_hash_defweak;
11502 hash->elf.root.u.def.section = code_sec;
11503 hash->elf.root.u.def.value = code_value;
11508 /* Determine what (if any) linker stub is needed. */
11510 stub_type = ppc_type_of_stub (section, irela, &hash,
11511 &plt_ent, destination);
11513 if (stub_type != ppc_stub_plt_call)
11515 /* Check whether we need a TOC adjusting stub.
11516 Since the linker pastes together pieces from
11517 different object files when creating the
11518 _init and _fini functions, it may be that a
11519 call to what looks like a local sym is in
11520 fact a call needing a TOC adjustment. */
11521 if (code_sec != NULL
11522 && code_sec->output_section != NULL
11523 && (htab->stub_group[code_sec->id].toc_off
11524 != htab->stub_group[section->id].toc_off)
11525 && (code_sec->has_toc_reloc
11526 || code_sec->makes_toc_func_call))
11527 stub_type = ppc_stub_long_branch_r2off;
11530 if (stub_type == ppc_stub_none)
11533 /* __tls_get_addr calls might be eliminated. */
11534 if (stub_type != ppc_stub_plt_call
11536 && (hash == htab->tls_get_addr
11537 || hash == htab->tls_get_addr_fd)
11538 && section->has_tls_reloc
11539 && irela != internal_relocs)
11541 /* Get tls info. */
11542 unsigned char *tls_mask;
11544 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11545 irela - 1, input_bfd))
11546 goto error_ret_free_internal;
11547 if (*tls_mask != 0)
11551 if (stub_type == ppc_stub_plt_call
11552 && irela + 1 < irelaend
11553 && irela[1].r_offset == irela->r_offset + 4
11554 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
11556 if (!tocsave_find (htab, INSERT,
11557 &local_syms, irela + 1, input_bfd))
11558 goto error_ret_free_internal;
11560 else if (stub_type == ppc_stub_plt_call)
11561 stub_type = ppc_stub_plt_call_r2save;
11563 /* Support for grouping stub sections. */
11564 id_sec = htab->stub_group[section->id].link_sec;
11566 /* Get the name of this stub. */
11567 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11569 goto error_ret_free_internal;
11571 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11572 stub_name, FALSE, FALSE);
11573 if (stub_entry != NULL)
11575 /* The proper stub has already been created. */
11577 if (stub_type == ppc_stub_plt_call_r2save)
11578 stub_entry->stub_type = stub_type;
11582 stub_entry = ppc_add_stub (stub_name, section, info);
11583 if (stub_entry == NULL)
11586 error_ret_free_internal:
11587 if (elf_section_data (section)->relocs == NULL)
11588 free (internal_relocs);
11589 error_ret_free_local:
11590 if (local_syms != NULL
11591 && (symtab_hdr->contents
11592 != (unsigned char *) local_syms))
11597 stub_entry->stub_type = stub_type;
11598 if (stub_type != ppc_stub_plt_call
11599 && stub_type != ppc_stub_plt_call_r2save)
11601 stub_entry->target_value = code_value;
11602 stub_entry->target_section = code_sec;
11606 stub_entry->target_value = sym_value;
11607 stub_entry->target_section = sym_sec;
11609 stub_entry->h = hash;
11610 stub_entry->plt_ent = plt_ent;
11611 stub_entry->addend = irela->r_addend;
11613 if (stub_entry->h != NULL)
11614 htab->stub_globals += 1;
11617 /* We're done with the internal relocs, free them. */
11618 if (elf_section_data (section)->relocs != internal_relocs)
11619 free (internal_relocs);
11622 if (local_syms != NULL
11623 && symtab_hdr->contents != (unsigned char *) local_syms)
11625 if (!info->keep_memory)
11628 symtab_hdr->contents = (unsigned char *) local_syms;
11632 /* We may have added some stubs. Find out the new size of the
11634 for (stub_sec = htab->stub_bfd->sections;
11636 stub_sec = stub_sec->next)
11637 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11639 stub_sec->rawsize = stub_sec->size;
11640 stub_sec->size = 0;
11641 stub_sec->reloc_count = 0;
11642 stub_sec->flags &= ~SEC_RELOC;
11645 htab->brlt->size = 0;
11646 htab->brlt->reloc_count = 0;
11647 htab->brlt->flags &= ~SEC_RELOC;
11648 if (htab->relbrlt != NULL)
11649 htab->relbrlt->size = 0;
11651 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11653 if (info->emitrelocations
11654 && htab->glink != NULL && htab->glink->size != 0)
11656 htab->glink->reloc_count = 1;
11657 htab->glink->flags |= SEC_RELOC;
11660 if (htab->glink_eh_frame != NULL
11661 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
11662 && htab->glink_eh_frame->output_section->size != 0)
11664 size_t size = 0, align;
11666 for (stub_sec = htab->stub_bfd->sections;
11668 stub_sec = stub_sec->next)
11669 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11671 if (htab->glink != NULL && htab->glink->size != 0)
11674 size += sizeof (glink_eh_frame_cie);
11676 align <<= htab->glink_eh_frame->output_section->alignment_power;
11678 size = (size + align) & ~align;
11679 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11680 htab->glink_eh_frame->size = size;
11683 if (htab->plt_stub_align != 0)
11684 for (stub_sec = htab->stub_bfd->sections;
11686 stub_sec = stub_sec->next)
11687 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11688 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
11689 & (-1 << htab->plt_stub_align));
11691 for (stub_sec = htab->stub_bfd->sections;
11693 stub_sec = stub_sec->next)
11694 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11695 && stub_sec->rawsize != stub_sec->size)
11698 /* Exit from this loop when no stubs have been added, and no stubs
11699 have changed size. */
11700 if (stub_sec == NULL
11701 && (htab->glink_eh_frame == NULL
11702 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
11705 /* Ask the linker to do its stuff. */
11706 (*htab->layout_sections_again) ();
11709 maybe_strip_output (info, htab->brlt);
11710 if (htab->glink_eh_frame != NULL)
11711 maybe_strip_output (info, htab->glink_eh_frame);
11716 /* Called after we have determined section placement. If sections
11717 move, we'll be called again. Provide a value for TOCstart. */
11720 ppc64_elf_toc (bfd *obfd)
11725 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11726 order. The TOC starts where the first of these sections starts. */
11727 s = bfd_get_section_by_name (obfd, ".got");
11728 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11729 s = bfd_get_section_by_name (obfd, ".toc");
11730 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11731 s = bfd_get_section_by_name (obfd, ".tocbss");
11732 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11733 s = bfd_get_section_by_name (obfd, ".plt");
11734 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11736 /* This may happen for
11737 o references to TOC base (SYM@toc / TOC[tc0]) without a
11739 o bad linker script
11740 o --gc-sections and empty TOC sections
11742 FIXME: Warn user? */
11744 /* Look for a likely section. We probably won't even be
11746 for (s = obfd->sections; s != NULL; s = s->next)
11747 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11749 == (SEC_ALLOC | SEC_SMALL_DATA))
11752 for (s = obfd->sections; s != NULL; s = s->next)
11753 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11754 == (SEC_ALLOC | SEC_SMALL_DATA))
11757 for (s = obfd->sections; s != NULL; s = s->next)
11758 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11762 for (s = obfd->sections; s != NULL; s = s->next)
11763 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11769 TOCstart = s->output_section->vma + s->output_offset;
11774 /* Build all the stubs associated with the current output file.
11775 The stubs are kept in a hash table attached to the main linker
11776 hash table. This function is called via gldelf64ppc_finish. */
11779 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11780 struct bfd_link_info *info,
11783 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11784 asection *stub_sec;
11786 int stub_sec_count = 0;
11791 htab->emit_stub_syms = emit_stub_syms;
11793 /* Allocate memory to hold the linker stubs. */
11794 for (stub_sec = htab->stub_bfd->sections;
11796 stub_sec = stub_sec->next)
11797 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11798 && stub_sec->size != 0)
11800 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11801 if (stub_sec->contents == NULL)
11803 /* We want to check that built size is the same as calculated
11804 size. rawsize is a convenient location to use. */
11805 stub_sec->rawsize = stub_sec->size;
11806 stub_sec->size = 0;
11809 if (htab->glink != NULL && htab->glink->size != 0)
11814 /* Build the .glink plt call stub. */
11815 if (htab->emit_stub_syms)
11817 struct elf_link_hash_entry *h;
11818 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11819 TRUE, FALSE, FALSE);
11822 if (h->root.type == bfd_link_hash_new)
11824 h->root.type = bfd_link_hash_defined;
11825 h->root.u.def.section = htab->glink;
11826 h->root.u.def.value = 8;
11827 h->ref_regular = 1;
11828 h->def_regular = 1;
11829 h->ref_regular_nonweak = 1;
11830 h->forced_local = 1;
11834 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11835 if (info->emitrelocations)
11837 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11840 r->r_offset = (htab->glink->output_offset
11841 + htab->glink->output_section->vma);
11842 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11843 r->r_addend = plt0;
11845 p = htab->glink->contents;
11846 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11847 bfd_put_64 (htab->glink->owner, plt0, p);
11849 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11851 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11853 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11855 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11857 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11859 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11861 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11863 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11865 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11867 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11869 bfd_put_32 (htab->glink->owner, BCTR, p);
11871 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11873 bfd_put_32 (htab->glink->owner, NOP, p);
11877 /* Build the .glink lazy link call stubs. */
11879 while (p < htab->glink->contents + htab->glink->size)
11883 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11888 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11890 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11893 bfd_put_32 (htab->glink->owner,
11894 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11898 htab->glink->rawsize = p - htab->glink->contents;
11901 if (htab->brlt->size != 0)
11903 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11905 if (htab->brlt->contents == NULL)
11908 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11910 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11911 htab->relbrlt->size);
11912 if (htab->relbrlt->contents == NULL)
11916 if (htab->glink_eh_frame != NULL
11917 && htab->glink_eh_frame->size != 0)
11920 bfd_byte *last_fde;
11921 size_t last_fde_len, size, align, pad;
11923 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
11926 htab->glink_eh_frame->contents = p;
11929 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11931 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
11932 /* CIE length (rewrite in case little-endian). */
11933 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
11934 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
11935 p += sizeof (glink_eh_frame_cie);
11937 for (stub_sec = htab->stub_bfd->sections;
11939 stub_sec = stub_sec->next)
11940 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11945 bfd_put_32 (htab->elf.dynobj, 16, p);
11948 val = p - htab->glink_eh_frame->contents;
11949 bfd_put_32 (htab->elf.dynobj, val, p);
11951 /* Offset to stub section. */
11952 val = (stub_sec->output_section->vma
11953 + stub_sec->output_offset);
11954 val -= (htab->glink_eh_frame->output_section->vma
11955 + htab->glink_eh_frame->output_offset);
11956 val -= p - htab->glink_eh_frame->contents;
11957 if (val + 0x80000000 > 0xffffffff)
11959 info->callbacks->einfo
11960 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11964 bfd_put_32 (htab->elf.dynobj, val, p);
11966 /* stub section size. */
11967 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
11969 /* Augmentation. */
11974 if (htab->glink != NULL && htab->glink->size != 0)
11979 bfd_put_32 (htab->elf.dynobj, 20, p);
11982 val = p - htab->glink_eh_frame->contents;
11983 bfd_put_32 (htab->elf.dynobj, val, p);
11985 /* Offset to .glink. */
11986 val = (htab->glink->output_section->vma
11987 + htab->glink->output_offset
11989 val -= (htab->glink_eh_frame->output_section->vma
11990 + htab->glink_eh_frame->output_offset);
11991 val -= p - htab->glink_eh_frame->contents;
11992 if (val + 0x80000000 > 0xffffffff)
11994 info->callbacks->einfo
11995 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11996 htab->glink->name);
11999 bfd_put_32 (htab->elf.dynobj, val, p);
12002 bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
12004 /* Augmentation. */
12007 *p++ = DW_CFA_advance_loc + 1;
12008 *p++ = DW_CFA_register;
12011 *p++ = DW_CFA_advance_loc + 4;
12012 *p++ = DW_CFA_restore_extended;
12015 /* Subsume any padding into the last FDE if user .eh_frame
12016 sections are aligned more than glink_eh_frame. Otherwise any
12017 zero padding will be seen as a terminator. */
12018 size = p - htab->glink_eh_frame->contents;
12020 align <<= htab->glink_eh_frame->output_section->alignment_power;
12022 pad = ((size + align) & ~align) - size;
12023 htab->glink_eh_frame->size = size + pad;
12024 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12027 /* Build the stubs as directed by the stub hash table. */
12028 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12030 if (htab->relbrlt != NULL)
12031 htab->relbrlt->reloc_count = 0;
12033 if (htab->plt_stub_align != 0)
12034 for (stub_sec = htab->stub_bfd->sections;
12036 stub_sec = stub_sec->next)
12037 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12038 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12039 & (-1 << htab->plt_stub_align));
12041 for (stub_sec = htab->stub_bfd->sections;
12043 stub_sec = stub_sec->next)
12044 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12046 stub_sec_count += 1;
12047 if (stub_sec->rawsize != stub_sec->size)
12051 if (stub_sec != NULL
12052 || htab->glink->rawsize != htab->glink->size
12053 || (htab->glink_eh_frame != NULL
12054 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12056 htab->stub_error = TRUE;
12057 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12060 if (htab->stub_error)
12065 *stats = bfd_malloc (500);
12066 if (*stats == NULL)
12069 sprintf (*stats, _("linker stubs in %u group%s\n"
12071 " toc adjust %lu\n"
12072 " long branch %lu\n"
12073 " long toc adj %lu\n"
12075 " plt call toc %lu"),
12077 stub_sec_count == 1 ? "" : "s",
12078 htab->stub_count[ppc_stub_long_branch - 1],
12079 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12080 htab->stub_count[ppc_stub_plt_branch - 1],
12081 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12082 htab->stub_count[ppc_stub_plt_call - 1],
12083 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12088 /* This function undoes the changes made by add_symbol_adjust. */
12091 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12093 struct ppc_link_hash_entry *eh;
12095 if (h->root.type == bfd_link_hash_indirect)
12098 eh = (struct ppc_link_hash_entry *) h;
12099 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12102 eh->elf.root.type = bfd_link_hash_undefined;
12107 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12109 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12112 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12115 /* What to do when ld finds relocations against symbols defined in
12116 discarded sections. */
12118 static unsigned int
12119 ppc64_elf_action_discarded (asection *sec)
12121 if (strcmp (".opd", sec->name) == 0)
12124 if (strcmp (".toc", sec->name) == 0)
12127 if (strcmp (".toc1", sec->name) == 0)
12130 return _bfd_elf_default_action_discarded (sec);
12133 /* The RELOCATE_SECTION function is called by the ELF backend linker
12134 to handle the relocations for a section.
12136 The relocs are always passed as Rela structures; if the section
12137 actually uses Rel structures, the r_addend field will always be
12140 This function is responsible for adjust the section contents as
12141 necessary, and (if using Rela relocs and generating a
12142 relocatable output file) adjusting the reloc addend as
12145 This function does not have to worry about setting the reloc
12146 address or the reloc symbol index.
12148 LOCAL_SYMS is a pointer to the swapped in local symbols.
12150 LOCAL_SECTIONS is an array giving the section in the input file
12151 corresponding to the st_shndx field of each local symbol.
12153 The global hash table entry for the global symbols can be found
12154 via elf_sym_hashes (input_bfd).
12156 When generating relocatable output, this function must handle
12157 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12158 going to be the section symbol corresponding to the output
12159 section, which means that the addend must be adjusted
12163 ppc64_elf_relocate_section (bfd *output_bfd,
12164 struct bfd_link_info *info,
12166 asection *input_section,
12167 bfd_byte *contents,
12168 Elf_Internal_Rela *relocs,
12169 Elf_Internal_Sym *local_syms,
12170 asection **local_sections)
12172 struct ppc_link_hash_table *htab;
12173 Elf_Internal_Shdr *symtab_hdr;
12174 struct elf_link_hash_entry **sym_hashes;
12175 Elf_Internal_Rela *rel;
12176 Elf_Internal_Rela *relend;
12177 Elf_Internal_Rela outrel;
12179 struct got_entry **local_got_ents;
12181 bfd_boolean ret = TRUE;
12182 bfd_boolean is_opd;
12183 /* Assume 'at' branch hints. */
12184 bfd_boolean is_isa_v2 = TRUE;
12185 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12187 /* Initialize howto table if needed. */
12188 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12191 htab = ppc_hash_table (info);
12195 /* Don't relocate stub sections. */
12196 if (input_section->owner == htab->stub_bfd)
12199 BFD_ASSERT (is_ppc64_elf (input_bfd));
12201 local_got_ents = elf_local_got_ents (input_bfd);
12202 TOCstart = elf_gp (output_bfd);
12203 symtab_hdr = &elf_symtab_hdr (input_bfd);
12204 sym_hashes = elf_sym_hashes (input_bfd);
12205 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12208 relend = relocs + input_section->reloc_count;
12209 for (; rel < relend; rel++)
12211 enum elf_ppc64_reloc_type r_type;
12212 bfd_vma addend, orig_addend;
12213 bfd_reloc_status_type r;
12214 Elf_Internal_Sym *sym;
12216 struct elf_link_hash_entry *h_elf;
12217 struct ppc_link_hash_entry *h;
12218 struct ppc_link_hash_entry *fdh;
12219 const char *sym_name;
12220 unsigned long r_symndx, toc_symndx;
12221 bfd_vma toc_addend;
12222 unsigned char tls_mask, tls_gd, tls_type;
12223 unsigned char sym_type;
12224 bfd_vma relocation;
12225 bfd_boolean unresolved_reloc;
12226 bfd_boolean warned;
12229 struct ppc_stub_hash_entry *stub_entry;
12230 bfd_vma max_br_offset;
12233 r_type = ELF64_R_TYPE (rel->r_info);
12234 r_symndx = ELF64_R_SYM (rel->r_info);
12236 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12237 symbol of the previous ADDR64 reloc. The symbol gives us the
12238 proper TOC base to use. */
12239 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12241 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12243 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12249 unresolved_reloc = FALSE;
12251 orig_addend = rel->r_addend;
12253 if (r_symndx < symtab_hdr->sh_info)
12255 /* It's a local symbol. */
12256 struct _opd_sec_data *opd;
12258 sym = local_syms + r_symndx;
12259 sec = local_sections[r_symndx];
12260 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12261 sym_type = ELF64_ST_TYPE (sym->st_info);
12262 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12263 opd = get_opd_info (sec);
12264 if (opd != NULL && opd->adjust != NULL)
12266 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12271 /* If this is a relocation against the opd section sym
12272 and we have edited .opd, adjust the reloc addend so
12273 that ld -r and ld --emit-relocs output is correct.
12274 If it is a reloc against some other .opd symbol,
12275 then the symbol value will be adjusted later. */
12276 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12277 rel->r_addend += adjust;
12279 relocation += adjust;
12285 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12286 r_symndx, symtab_hdr, sym_hashes,
12287 h_elf, sec, relocation,
12288 unresolved_reloc, warned);
12289 sym_name = h_elf->root.root.string;
12290 sym_type = h_elf->type;
12292 h = (struct ppc_link_hash_entry *) h_elf;
12294 if (sec != NULL && discarded_section (sec))
12295 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
12297 ppc64_elf_howto_table[r_type], 0,
12300 if (info->relocatable)
12303 /* TLS optimizations. Replace instruction sequences and relocs
12304 based on information we collected in tls_optimize. We edit
12305 RELOCS so that --emit-relocs will output something sensible
12306 for the final instruction stream. */
12311 tls_mask = h->tls_mask;
12312 else if (local_got_ents != NULL)
12314 struct plt_entry **local_plt = (struct plt_entry **)
12315 (local_got_ents + symtab_hdr->sh_info);
12316 unsigned char *lgot_masks = (unsigned char *)
12317 (local_plt + symtab_hdr->sh_info);
12318 tls_mask = lgot_masks[r_symndx];
12321 && (r_type == R_PPC64_TLS
12322 || r_type == R_PPC64_TLSGD
12323 || r_type == R_PPC64_TLSLD))
12325 /* Check for toc tls entries. */
12326 unsigned char *toc_tls;
12328 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12329 &local_syms, rel, input_bfd))
12333 tls_mask = *toc_tls;
12336 /* Check that tls relocs are used with tls syms, and non-tls
12337 relocs are used with non-tls syms. */
12338 if (r_symndx != STN_UNDEF
12339 && r_type != R_PPC64_NONE
12341 || h->elf.root.type == bfd_link_hash_defined
12342 || h->elf.root.type == bfd_link_hash_defweak)
12343 && (IS_PPC64_TLS_RELOC (r_type)
12344 != (sym_type == STT_TLS
12345 || (sym_type == STT_SECTION
12346 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
12349 && (r_type == R_PPC64_TLS
12350 || r_type == R_PPC64_TLSGD
12351 || r_type == R_PPC64_TLSLD))
12352 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12355 info->callbacks->einfo
12356 (!IS_PPC64_TLS_RELOC (r_type)
12357 ? _("%P: %H: %s used with TLS symbol %s\n")
12358 : _("%P: %H: %s used with non-TLS symbol %s\n"),
12359 input_bfd, input_section, rel->r_offset,
12360 ppc64_elf_howto_table[r_type]->name,
12364 /* Ensure reloc mapping code below stays sane. */
12365 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
12366 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
12367 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
12368 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
12369 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
12370 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
12371 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
12372 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
12373 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
12374 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
12382 case R_PPC64_LO_DS_OPT:
12383 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12384 if ((insn & (0x3f << 26)) != 58u << 26)
12386 insn += (14u << 26) - (58u << 26);
12387 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12388 r_type = R_PPC64_TOC16_LO;
12389 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12392 case R_PPC64_TOC16:
12393 case R_PPC64_TOC16_LO:
12394 case R_PPC64_TOC16_DS:
12395 case R_PPC64_TOC16_LO_DS:
12397 /* Check for toc tls entries. */
12398 unsigned char *toc_tls;
12401 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12402 &local_syms, rel, input_bfd);
12408 tls_mask = *toc_tls;
12409 if (r_type == R_PPC64_TOC16_DS
12410 || r_type == R_PPC64_TOC16_LO_DS)
12413 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
12418 /* If we found a GD reloc pair, then we might be
12419 doing a GD->IE transition. */
12422 tls_gd = TLS_TPRELGD;
12423 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12426 else if (retval == 3)
12428 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12436 case R_PPC64_GOT_TPREL16_HI:
12437 case R_PPC64_GOT_TPREL16_HA:
12439 && (tls_mask & TLS_TPREL) == 0)
12441 rel->r_offset -= d_offset;
12442 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12443 r_type = R_PPC64_NONE;
12444 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12448 case R_PPC64_GOT_TPREL16_DS:
12449 case R_PPC64_GOT_TPREL16_LO_DS:
12451 && (tls_mask & TLS_TPREL) == 0)
12454 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12456 insn |= 0x3c0d0000; /* addis 0,13,0 */
12457 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12458 r_type = R_PPC64_TPREL16_HA;
12459 if (toc_symndx != 0)
12461 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12462 rel->r_addend = toc_addend;
12463 /* We changed the symbol. Start over in order to
12464 get h, sym, sec etc. right. */
12469 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12475 && (tls_mask & TLS_TPREL) == 0)
12477 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
12478 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
12481 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12482 /* Was PPC64_TLS which sits on insn boundary, now
12483 PPC64_TPREL16_LO which is at low-order half-word. */
12484 rel->r_offset += d_offset;
12485 r_type = R_PPC64_TPREL16_LO;
12486 if (toc_symndx != 0)
12488 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12489 rel->r_addend = toc_addend;
12490 /* We changed the symbol. Start over in order to
12491 get h, sym, sec etc. right. */
12496 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12500 case R_PPC64_GOT_TLSGD16_HI:
12501 case R_PPC64_GOT_TLSGD16_HA:
12502 tls_gd = TLS_TPRELGD;
12503 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12507 case R_PPC64_GOT_TLSLD16_HI:
12508 case R_PPC64_GOT_TLSLD16_HA:
12509 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12512 if ((tls_mask & tls_gd) != 0)
12513 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12514 + R_PPC64_GOT_TPREL16_DS);
12517 rel->r_offset -= d_offset;
12518 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12519 r_type = R_PPC64_NONE;
12521 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12525 case R_PPC64_GOT_TLSGD16:
12526 case R_PPC64_GOT_TLSGD16_LO:
12527 tls_gd = TLS_TPRELGD;
12528 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12532 case R_PPC64_GOT_TLSLD16:
12533 case R_PPC64_GOT_TLSLD16_LO:
12534 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12536 unsigned int insn1, insn2, insn3;
12540 offset = (bfd_vma) -1;
12541 /* If not using the newer R_PPC64_TLSGD/LD to mark
12542 __tls_get_addr calls, we must trust that the call
12543 stays with its arg setup insns, ie. that the next
12544 reloc is the __tls_get_addr call associated with
12545 the current reloc. Edit both insns. */
12546 if (input_section->has_tls_get_addr_call
12547 && rel + 1 < relend
12548 && branch_reloc_hash_match (input_bfd, rel + 1,
12549 htab->tls_get_addr,
12550 htab->tls_get_addr_fd))
12551 offset = rel[1].r_offset;
12552 if ((tls_mask & tls_gd) != 0)
12555 insn1 = bfd_get_32 (output_bfd,
12556 contents + rel->r_offset - d_offset);
12557 insn1 &= (1 << 26) - (1 << 2);
12558 insn1 |= 58 << 26; /* ld */
12559 insn2 = 0x7c636a14; /* add 3,3,13 */
12560 if (offset != (bfd_vma) -1)
12561 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12562 if ((tls_mask & TLS_EXPLICIT) == 0)
12563 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12564 + R_PPC64_GOT_TPREL16_DS);
12566 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12567 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12572 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12573 insn2 = 0x38630000; /* addi 3,3,0 */
12576 /* Was an LD reloc. */
12578 sec = local_sections[toc_symndx];
12580 r_symndx < symtab_hdr->sh_info;
12582 if (local_sections[r_symndx] == sec)
12584 if (r_symndx >= symtab_hdr->sh_info)
12585 r_symndx = STN_UNDEF;
12586 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12587 if (r_symndx != STN_UNDEF)
12588 rel->r_addend -= (local_syms[r_symndx].st_value
12589 + sec->output_offset
12590 + sec->output_section->vma);
12592 else if (toc_symndx != 0)
12594 r_symndx = toc_symndx;
12595 rel->r_addend = toc_addend;
12597 r_type = R_PPC64_TPREL16_HA;
12598 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12599 if (offset != (bfd_vma) -1)
12601 rel[1].r_info = ELF64_R_INFO (r_symndx,
12602 R_PPC64_TPREL16_LO);
12603 rel[1].r_offset = offset + d_offset;
12604 rel[1].r_addend = rel->r_addend;
12607 bfd_put_32 (output_bfd, insn1,
12608 contents + rel->r_offset - d_offset);
12609 if (offset != (bfd_vma) -1)
12611 insn3 = bfd_get_32 (output_bfd,
12612 contents + offset + 4);
12614 || insn3 == CROR_151515 || insn3 == CROR_313131)
12616 rel[1].r_offset += 4;
12617 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12620 bfd_put_32 (output_bfd, insn2, contents + offset);
12622 if ((tls_mask & tls_gd) == 0
12623 && (tls_gd == 0 || toc_symndx != 0))
12625 /* We changed the symbol. Start over in order
12626 to get h, sym, sec etc. right. */
12633 case R_PPC64_TLSGD:
12634 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12636 unsigned int insn2, insn3;
12637 bfd_vma offset = rel->r_offset;
12639 if ((tls_mask & TLS_TPRELGD) != 0)
12642 r_type = R_PPC64_NONE;
12643 insn2 = 0x7c636a14; /* add 3,3,13 */
12648 if (toc_symndx != 0)
12650 r_symndx = toc_symndx;
12651 rel->r_addend = toc_addend;
12653 r_type = R_PPC64_TPREL16_LO;
12654 rel->r_offset = offset + d_offset;
12655 insn2 = 0x38630000; /* addi 3,3,0 */
12657 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12658 /* Zap the reloc on the _tls_get_addr call too. */
12659 BFD_ASSERT (offset == rel[1].r_offset);
12660 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12661 insn3 = bfd_get_32 (output_bfd,
12662 contents + offset + 4);
12664 || insn3 == CROR_151515 || insn3 == CROR_313131)
12666 rel->r_offset += 4;
12667 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12670 bfd_put_32 (output_bfd, insn2, contents + offset);
12671 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12679 case R_PPC64_TLSLD:
12680 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12682 unsigned int insn2, insn3;
12683 bfd_vma offset = rel->r_offset;
12686 sec = local_sections[toc_symndx];
12688 r_symndx < symtab_hdr->sh_info;
12690 if (local_sections[r_symndx] == sec)
12692 if (r_symndx >= symtab_hdr->sh_info)
12693 r_symndx = STN_UNDEF;
12694 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12695 if (r_symndx != STN_UNDEF)
12696 rel->r_addend -= (local_syms[r_symndx].st_value
12697 + sec->output_offset
12698 + sec->output_section->vma);
12700 r_type = R_PPC64_TPREL16_LO;
12701 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12702 rel->r_offset = offset + d_offset;
12703 /* Zap the reloc on the _tls_get_addr call too. */
12704 BFD_ASSERT (offset == rel[1].r_offset);
12705 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12706 insn2 = 0x38630000; /* addi 3,3,0 */
12707 insn3 = bfd_get_32 (output_bfd,
12708 contents + offset + 4);
12710 || insn3 == CROR_151515 || insn3 == CROR_313131)
12712 rel->r_offset += 4;
12713 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12716 bfd_put_32 (output_bfd, insn2, contents + offset);
12722 case R_PPC64_DTPMOD64:
12723 if (rel + 1 < relend
12724 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12725 && rel[1].r_offset == rel->r_offset + 8)
12727 if ((tls_mask & TLS_GD) == 0)
12729 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12730 if ((tls_mask & TLS_TPRELGD) != 0)
12731 r_type = R_PPC64_TPREL64;
12734 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12735 r_type = R_PPC64_NONE;
12737 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12742 if ((tls_mask & TLS_LD) == 0)
12744 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12745 r_type = R_PPC64_NONE;
12746 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12751 case R_PPC64_TPREL64:
12752 if ((tls_mask & TLS_TPREL) == 0)
12754 r_type = R_PPC64_NONE;
12755 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12760 /* Handle other relocations that tweak non-addend part of insn. */
12762 max_br_offset = 1 << 25;
12763 addend = rel->r_addend;
12769 case R_PPC64_TOCSAVE:
12770 if (relocation + addend == (rel->r_offset
12771 + input_section->output_offset
12772 + input_section->output_section->vma)
12773 && tocsave_find (htab, NO_INSERT,
12774 &local_syms, rel, input_bfd))
12776 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
12778 || insn == CROR_151515 || insn == CROR_313131)
12779 bfd_put_32 (input_bfd, STD_R2_40R1,
12780 contents + rel->r_offset);
12784 /* Branch taken prediction relocations. */
12785 case R_PPC64_ADDR14_BRTAKEN:
12786 case R_PPC64_REL14_BRTAKEN:
12787 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12790 /* Branch not taken prediction relocations. */
12791 case R_PPC64_ADDR14_BRNTAKEN:
12792 case R_PPC64_REL14_BRNTAKEN:
12793 insn |= bfd_get_32 (output_bfd,
12794 contents + rel->r_offset) & ~(0x01 << 21);
12797 case R_PPC64_REL14:
12798 max_br_offset = 1 << 15;
12801 case R_PPC64_REL24:
12802 /* Calls to functions with a different TOC, such as calls to
12803 shared objects, need to alter the TOC pointer. This is
12804 done using a linkage stub. A REL24 branching to these
12805 linkage stubs needs to be followed by a nop, as the nop
12806 will be replaced with an instruction to restore the TOC
12811 && h->oh->is_func_descriptor)
12812 fdh = ppc_follow_link (h->oh);
12813 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12814 if (stub_entry != NULL
12815 && (stub_entry->stub_type == ppc_stub_plt_call
12816 || stub_entry->stub_type == ppc_stub_plt_call_r2save
12817 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12818 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
12820 bfd_boolean can_plt_call = FALSE;
12822 if (rel->r_offset + 8 <= input_section->size)
12825 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12827 || nop == CROR_151515 || nop == CROR_313131)
12830 && (h == htab->tls_get_addr_fd
12831 || h == htab->tls_get_addr)
12832 && !htab->no_tls_get_addr_opt)
12834 /* Special stub used, leave nop alone. */
12837 bfd_put_32 (input_bfd, LD_R2_40R1,
12838 contents + rel->r_offset + 4);
12839 can_plt_call = TRUE;
12845 if (stub_entry->stub_type == ppc_stub_plt_call
12846 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12848 /* If this is a plain branch rather than a branch
12849 and link, don't require a nop. However, don't
12850 allow tail calls in a shared library as they
12851 will result in r2 being corrupted. */
12853 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
12854 if (info->executable && (br & 1) == 0)
12855 can_plt_call = TRUE;
12860 && strcmp (h->elf.root.root.string,
12861 ".__libc_start_main") == 0)
12863 /* Allow crt1 branch to go via a toc adjusting stub. */
12864 can_plt_call = TRUE;
12868 if (strcmp (input_section->output_section->name,
12870 || strcmp (input_section->output_section->name,
12872 info->callbacks->einfo
12873 (_("%P: %H: automatic multiple TOCs "
12874 "not supported using your crt files; "
12875 "recompile with -mminimal-toc or upgrade gcc\n"),
12876 input_bfd, input_section, rel->r_offset);
12878 info->callbacks->einfo
12879 (_("%P: %H: sibling call optimization to `%s' "
12880 "does not allow automatic multiple TOCs; "
12881 "recompile with -mminimal-toc or "
12882 "-fno-optimize-sibling-calls, "
12883 "or make `%s' extern\n"),
12884 input_bfd, input_section, rel->r_offset,
12887 bfd_set_error (bfd_error_bad_value);
12893 && (stub_entry->stub_type == ppc_stub_plt_call
12894 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
12895 unresolved_reloc = FALSE;
12898 if ((stub_entry == NULL
12899 || stub_entry->stub_type == ppc_stub_long_branch
12900 || stub_entry->stub_type == ppc_stub_plt_branch)
12901 && get_opd_info (sec) != NULL)
12903 /* The branch destination is the value of the opd entry. */
12904 bfd_vma off = (relocation + addend
12905 - sec->output_section->vma
12906 - sec->output_offset);
12907 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
12908 if (dest != (bfd_vma) -1)
12915 /* If the branch is out of reach we ought to have a long
12917 from = (rel->r_offset
12918 + input_section->output_offset
12919 + input_section->output_section->vma);
12921 if (stub_entry != NULL
12922 && (stub_entry->stub_type == ppc_stub_long_branch
12923 || stub_entry->stub_type == ppc_stub_plt_branch)
12924 && (r_type == R_PPC64_ADDR14_BRTAKEN
12925 || r_type == R_PPC64_ADDR14_BRNTAKEN
12926 || (relocation + addend - from + max_br_offset
12927 < 2 * max_br_offset)))
12928 /* Don't use the stub if this branch is in range. */
12931 if (stub_entry != NULL)
12933 /* Munge up the value and addend so that we call the stub
12934 rather than the procedure directly. */
12935 relocation = (stub_entry->stub_offset
12936 + stub_entry->stub_sec->output_offset
12937 + stub_entry->stub_sec->output_section->vma);
12940 if ((stub_entry->stub_type == ppc_stub_plt_call
12941 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12942 && (ALWAYS_EMIT_R2SAVE
12943 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12944 && rel + 1 < relend
12945 && rel[1].r_offset == rel->r_offset + 4
12946 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
12954 /* Set 'a' bit. This is 0b00010 in BO field for branch
12955 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12956 for branch on CTR insns (BO == 1a00t or 1a01t). */
12957 if ((insn & (0x14 << 21)) == (0x04 << 21))
12958 insn |= 0x02 << 21;
12959 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12960 insn |= 0x08 << 21;
12966 /* Invert 'y' bit if not the default. */
12967 if ((bfd_signed_vma) (relocation + addend - from) < 0)
12968 insn ^= 0x01 << 21;
12971 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12974 /* NOP out calls to undefined weak functions.
12975 We can thus call a weak function without first
12976 checking whether the function is defined. */
12978 && h->elf.root.type == bfd_link_hash_undefweak
12979 && h->elf.dynindx == -1
12980 && r_type == R_PPC64_REL24
12984 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12990 /* Set `addend'. */
12995 info->callbacks->einfo
12996 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
12997 input_bfd, (int) r_type, sym_name);
12999 bfd_set_error (bfd_error_bad_value);
13005 case R_PPC64_TLSGD:
13006 case R_PPC64_TLSLD:
13007 case R_PPC64_TOCSAVE:
13008 case R_PPC64_GNU_VTINHERIT:
13009 case R_PPC64_GNU_VTENTRY:
13012 /* GOT16 relocations. Like an ADDR16 using the symbol's
13013 address in the GOT as relocation value instead of the
13014 symbol's value itself. Also, create a GOT entry for the
13015 symbol and put the symbol value there. */
13016 case R_PPC64_GOT_TLSGD16:
13017 case R_PPC64_GOT_TLSGD16_LO:
13018 case R_PPC64_GOT_TLSGD16_HI:
13019 case R_PPC64_GOT_TLSGD16_HA:
13020 tls_type = TLS_TLS | TLS_GD;
13023 case R_PPC64_GOT_TLSLD16:
13024 case R_PPC64_GOT_TLSLD16_LO:
13025 case R_PPC64_GOT_TLSLD16_HI:
13026 case R_PPC64_GOT_TLSLD16_HA:
13027 tls_type = TLS_TLS | TLS_LD;
13030 case R_PPC64_GOT_TPREL16_DS:
13031 case R_PPC64_GOT_TPREL16_LO_DS:
13032 case R_PPC64_GOT_TPREL16_HI:
13033 case R_PPC64_GOT_TPREL16_HA:
13034 tls_type = TLS_TLS | TLS_TPREL;
13037 case R_PPC64_GOT_DTPREL16_DS:
13038 case R_PPC64_GOT_DTPREL16_LO_DS:
13039 case R_PPC64_GOT_DTPREL16_HI:
13040 case R_PPC64_GOT_DTPREL16_HA:
13041 tls_type = TLS_TLS | TLS_DTPREL;
13044 case R_PPC64_GOT16:
13045 case R_PPC64_GOT16_LO:
13046 case R_PPC64_GOT16_HI:
13047 case R_PPC64_GOT16_HA:
13048 case R_PPC64_GOT16_DS:
13049 case R_PPC64_GOT16_LO_DS:
13052 /* Relocation is to the entry for this symbol in the global
13057 unsigned long indx = 0;
13058 struct got_entry *ent;
13060 if (tls_type == (TLS_TLS | TLS_LD)
13062 || !h->elf.def_dynamic))
13063 ent = ppc64_tlsld_got (input_bfd);
13069 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13070 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13073 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13074 /* This is actually a static link, or it is a
13075 -Bsymbolic link and the symbol is defined
13076 locally, or the symbol was forced to be local
13077 because of a version file. */
13081 indx = h->elf.dynindx;
13082 unresolved_reloc = FALSE;
13084 ent = h->elf.got.glist;
13088 if (local_got_ents == NULL)
13090 ent = local_got_ents[r_symndx];
13093 for (; ent != NULL; ent = ent->next)
13094 if (ent->addend == orig_addend
13095 && ent->owner == input_bfd
13096 && ent->tls_type == tls_type)
13102 if (ent->is_indirect)
13103 ent = ent->got.ent;
13104 offp = &ent->got.offset;
13105 got = ppc64_elf_tdata (ent->owner)->got;
13109 /* The offset must always be a multiple of 8. We use the
13110 least significant bit to record whether we have already
13111 processed this entry. */
13113 if ((off & 1) != 0)
13117 /* Generate relocs for the dynamic linker, except in
13118 the case of TLSLD where we'll use one entry per
13126 ? h->elf.type == STT_GNU_IFUNC
13127 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13128 if ((info->shared || indx != 0)
13130 || (tls_type == (TLS_TLS | TLS_LD)
13131 && !h->elf.def_dynamic)
13132 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13133 || h->elf.root.type != bfd_link_hash_undefweak))
13134 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13136 relgot = htab->reliplt;
13137 if (relgot != NULL)
13139 outrel.r_offset = (got->output_section->vma
13140 + got->output_offset
13142 outrel.r_addend = addend;
13143 if (tls_type & (TLS_LD | TLS_GD))
13145 outrel.r_addend = 0;
13146 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13147 if (tls_type == (TLS_TLS | TLS_GD))
13149 loc = relgot->contents;
13150 loc += (relgot->reloc_count++
13151 * sizeof (Elf64_External_Rela));
13152 bfd_elf64_swap_reloca_out (output_bfd,
13154 outrel.r_offset += 8;
13155 outrel.r_addend = addend;
13157 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13160 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13161 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13162 else if (tls_type == (TLS_TLS | TLS_TPREL))
13163 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13164 else if (indx != 0)
13165 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13169 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13171 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13173 /* Write the .got section contents for the sake
13175 loc = got->contents + off;
13176 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13180 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13182 outrel.r_addend += relocation;
13183 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13184 outrel.r_addend -= htab->elf.tls_sec->vma;
13186 loc = relgot->contents;
13187 loc += (relgot->reloc_count++
13188 * sizeof (Elf64_External_Rela));
13189 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13192 /* Init the .got section contents here if we're not
13193 emitting a reloc. */
13196 relocation += addend;
13197 if (tls_type == (TLS_TLS | TLS_LD))
13199 else if (tls_type != 0)
13201 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13202 if (tls_type == (TLS_TLS | TLS_TPREL))
13203 relocation += DTP_OFFSET - TP_OFFSET;
13205 if (tls_type == (TLS_TLS | TLS_GD))
13207 bfd_put_64 (output_bfd, relocation,
13208 got->contents + off + 8);
13213 bfd_put_64 (output_bfd, relocation,
13214 got->contents + off);
13218 if (off >= (bfd_vma) -2)
13221 relocation = got->output_section->vma + got->output_offset + off;
13222 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
13226 case R_PPC64_PLT16_HA:
13227 case R_PPC64_PLT16_HI:
13228 case R_PPC64_PLT16_LO:
13229 case R_PPC64_PLT32:
13230 case R_PPC64_PLT64:
13231 /* Relocation is to the entry for this symbol in the
13232 procedure linkage table. */
13234 /* Resolve a PLT reloc against a local symbol directly,
13235 without using the procedure linkage table. */
13239 /* It's possible that we didn't make a PLT entry for this
13240 symbol. This happens when statically linking PIC code,
13241 or when using -Bsymbolic. Go find a match if there is a
13243 if (htab->plt != NULL)
13245 struct plt_entry *ent;
13246 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
13247 if (ent->addend == orig_addend
13248 && ent->plt.offset != (bfd_vma) -1)
13250 relocation = (htab->plt->output_section->vma
13251 + htab->plt->output_offset
13252 + ent->plt.offset);
13253 unresolved_reloc = FALSE;
13259 /* Relocation value is TOC base. */
13260 relocation = TOCstart;
13261 if (r_symndx == STN_UNDEF)
13262 relocation += htab->stub_group[input_section->id].toc_off;
13263 else if (unresolved_reloc)
13265 else if (sec != NULL && sec->id <= htab->top_id)
13266 relocation += htab->stub_group[sec->id].toc_off;
13268 unresolved_reloc = TRUE;
13271 /* TOC16 relocs. We want the offset relative to the TOC base,
13272 which is the address of the start of the TOC plus 0x8000.
13273 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13275 case R_PPC64_TOC16:
13276 case R_PPC64_TOC16_LO:
13277 case R_PPC64_TOC16_HI:
13278 case R_PPC64_TOC16_DS:
13279 case R_PPC64_TOC16_LO_DS:
13280 case R_PPC64_TOC16_HA:
13281 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
13284 /* Relocate against the beginning of the section. */
13285 case R_PPC64_SECTOFF:
13286 case R_PPC64_SECTOFF_LO:
13287 case R_PPC64_SECTOFF_HI:
13288 case R_PPC64_SECTOFF_DS:
13289 case R_PPC64_SECTOFF_LO_DS:
13290 case R_PPC64_SECTOFF_HA:
13292 addend -= sec->output_section->vma;
13295 case R_PPC64_REL16:
13296 case R_PPC64_REL16_LO:
13297 case R_PPC64_REL16_HI:
13298 case R_PPC64_REL16_HA:
13301 case R_PPC64_REL14:
13302 case R_PPC64_REL14_BRNTAKEN:
13303 case R_PPC64_REL14_BRTAKEN:
13304 case R_PPC64_REL24:
13307 case R_PPC64_TPREL16:
13308 case R_PPC64_TPREL16_LO:
13309 case R_PPC64_TPREL16_HI:
13310 case R_PPC64_TPREL16_HA:
13311 case R_PPC64_TPREL16_DS:
13312 case R_PPC64_TPREL16_LO_DS:
13313 case R_PPC64_TPREL16_HIGHER:
13314 case R_PPC64_TPREL16_HIGHERA:
13315 case R_PPC64_TPREL16_HIGHEST:
13316 case R_PPC64_TPREL16_HIGHESTA:
13318 && h->elf.root.type == bfd_link_hash_undefweak
13319 && h->elf.dynindx == -1)
13321 /* Make this relocation against an undefined weak symbol
13322 resolve to zero. This is really just a tweak, since
13323 code using weak externs ought to check that they are
13324 defined before using them. */
13325 bfd_byte *p = contents + rel->r_offset - d_offset;
13327 insn = bfd_get_32 (output_bfd, p);
13328 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
13330 bfd_put_32 (output_bfd, insn, p);
13333 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13335 /* The TPREL16 relocs shouldn't really be used in shared
13336 libs as they will result in DT_TEXTREL being set, but
13337 support them anyway. */
13341 case R_PPC64_DTPREL16:
13342 case R_PPC64_DTPREL16_LO:
13343 case R_PPC64_DTPREL16_HI:
13344 case R_PPC64_DTPREL16_HA:
13345 case R_PPC64_DTPREL16_DS:
13346 case R_PPC64_DTPREL16_LO_DS:
13347 case R_PPC64_DTPREL16_HIGHER:
13348 case R_PPC64_DTPREL16_HIGHERA:
13349 case R_PPC64_DTPREL16_HIGHEST:
13350 case R_PPC64_DTPREL16_HIGHESTA:
13351 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13354 case R_PPC64_DTPMOD64:
13359 case R_PPC64_TPREL64:
13360 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13363 case R_PPC64_DTPREL64:
13364 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13367 /* Relocations that may need to be propagated if this is a
13369 case R_PPC64_REL30:
13370 case R_PPC64_REL32:
13371 case R_PPC64_REL64:
13372 case R_PPC64_ADDR14:
13373 case R_PPC64_ADDR14_BRNTAKEN:
13374 case R_PPC64_ADDR14_BRTAKEN:
13375 case R_PPC64_ADDR16:
13376 case R_PPC64_ADDR16_DS:
13377 case R_PPC64_ADDR16_HA:
13378 case R_PPC64_ADDR16_HI:
13379 case R_PPC64_ADDR16_HIGHER:
13380 case R_PPC64_ADDR16_HIGHERA:
13381 case R_PPC64_ADDR16_HIGHEST:
13382 case R_PPC64_ADDR16_HIGHESTA:
13383 case R_PPC64_ADDR16_LO:
13384 case R_PPC64_ADDR16_LO_DS:
13385 case R_PPC64_ADDR24:
13386 case R_PPC64_ADDR32:
13387 case R_PPC64_ADDR64:
13388 case R_PPC64_UADDR16:
13389 case R_PPC64_UADDR32:
13390 case R_PPC64_UADDR64:
13392 if ((input_section->flags & SEC_ALLOC) == 0)
13395 if (NO_OPD_RELOCS && is_opd)
13400 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13401 || h->elf.root.type != bfd_link_hash_undefweak)
13402 && (must_be_dyn_reloc (info, r_type)
13403 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
13404 || (ELIMINATE_COPY_RELOCS
13407 && h->elf.dynindx != -1
13408 && !h->elf.non_got_ref
13409 && !h->elf.def_regular)
13412 ? h->elf.type == STT_GNU_IFUNC
13413 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
13415 bfd_boolean skip, relocate;
13419 /* When generating a dynamic object, these relocations
13420 are copied into the output file to be resolved at run
13426 out_off = _bfd_elf_section_offset (output_bfd, info,
13427 input_section, rel->r_offset);
13428 if (out_off == (bfd_vma) -1)
13430 else if (out_off == (bfd_vma) -2)
13431 skip = TRUE, relocate = TRUE;
13432 out_off += (input_section->output_section->vma
13433 + input_section->output_offset);
13434 outrel.r_offset = out_off;
13435 outrel.r_addend = rel->r_addend;
13437 /* Optimize unaligned reloc use. */
13438 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
13439 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
13440 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
13441 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
13442 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
13443 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
13444 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
13445 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
13446 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
13449 memset (&outrel, 0, sizeof outrel);
13450 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
13452 && r_type != R_PPC64_TOC)
13453 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
13456 /* This symbol is local, or marked to become local,
13457 or this is an opd section reloc which must point
13458 at a local function. */
13459 outrel.r_addend += relocation;
13460 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
13462 if (is_opd && h != NULL)
13464 /* Lie about opd entries. This case occurs
13465 when building shared libraries and we
13466 reference a function in another shared
13467 lib. The same thing happens for a weak
13468 definition in an application that's
13469 overridden by a strong definition in a
13470 shared lib. (I believe this is a generic
13471 bug in binutils handling of weak syms.)
13472 In these cases we won't use the opd
13473 entry in this lib. */
13474 unresolved_reloc = FALSE;
13477 && r_type == R_PPC64_ADDR64
13479 ? h->elf.type == STT_GNU_IFUNC
13480 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
13481 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13484 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13486 /* We need to relocate .opd contents for ld.so.
13487 Prelink also wants simple and consistent rules
13488 for relocs. This make all RELATIVE relocs have
13489 *r_offset equal to r_addend. */
13498 ? h->elf.type == STT_GNU_IFUNC
13499 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13501 info->callbacks->einfo
13502 (_("%P: %H: relocation %s for indirect "
13503 "function %s unsupported\n"),
13504 input_bfd, input_section, rel->r_offset,
13505 ppc64_elf_howto_table[r_type]->name,
13509 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
13511 else if (sec == NULL || sec->owner == NULL)
13513 bfd_set_error (bfd_error_bad_value);
13520 osec = sec->output_section;
13521 indx = elf_section_data (osec)->dynindx;
13525 if ((osec->flags & SEC_READONLY) == 0
13526 && htab->elf.data_index_section != NULL)
13527 osec = htab->elf.data_index_section;
13529 osec = htab->elf.text_index_section;
13530 indx = elf_section_data (osec)->dynindx;
13532 BFD_ASSERT (indx != 0);
13534 /* We are turning this relocation into one
13535 against a section symbol, so subtract out
13536 the output section's address but not the
13537 offset of the input section in the output
13539 outrel.r_addend -= osec->vma;
13542 outrel.r_info = ELF64_R_INFO (indx, r_type);
13546 sreloc = elf_section_data (input_section)->sreloc;
13547 if (!htab->elf.dynamic_sections_created)
13548 sreloc = htab->reliplt;
13549 if (sreloc == NULL)
13552 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13555 loc = sreloc->contents;
13556 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13557 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13559 /* If this reloc is against an external symbol, it will
13560 be computed at runtime, so there's no need to do
13561 anything now. However, for the sake of prelink ensure
13562 that the section contents are a known value. */
13565 unresolved_reloc = FALSE;
13566 /* The value chosen here is quite arbitrary as ld.so
13567 ignores section contents except for the special
13568 case of .opd where the contents might be accessed
13569 before relocation. Choose zero, as that won't
13570 cause reloc overflow. */
13573 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13574 to improve backward compatibility with older
13576 if (r_type == R_PPC64_ADDR64)
13577 addend = outrel.r_addend;
13578 /* Adjust pc_relative relocs to have zero in *r_offset. */
13579 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13580 addend = (input_section->output_section->vma
13581 + input_section->output_offset
13588 case R_PPC64_GLOB_DAT:
13589 case R_PPC64_JMP_SLOT:
13590 case R_PPC64_JMP_IREL:
13591 case R_PPC64_RELATIVE:
13592 /* We shouldn't ever see these dynamic relocs in relocatable
13594 /* Fall through. */
13596 case R_PPC64_PLTGOT16:
13597 case R_PPC64_PLTGOT16_DS:
13598 case R_PPC64_PLTGOT16_HA:
13599 case R_PPC64_PLTGOT16_HI:
13600 case R_PPC64_PLTGOT16_LO:
13601 case R_PPC64_PLTGOT16_LO_DS:
13602 case R_PPC64_PLTREL32:
13603 case R_PPC64_PLTREL64:
13604 /* These ones haven't been implemented yet. */
13606 info->callbacks->einfo
13607 (_("%P: %B: relocation %s is not supported for symbol %s\n"),
13609 ppc64_elf_howto_table[r_type]->name, sym_name);
13611 bfd_set_error (bfd_error_invalid_operation);
13616 /* Multi-instruction sequences that access the TOC can be
13617 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13618 to nop; addi rb,r2,x; */
13624 case R_PPC64_GOT_TLSLD16_HI:
13625 case R_PPC64_GOT_TLSGD16_HI:
13626 case R_PPC64_GOT_TPREL16_HI:
13627 case R_PPC64_GOT_DTPREL16_HI:
13628 case R_PPC64_GOT16_HI:
13629 case R_PPC64_TOC16_HI:
13630 /* These relocs would only be useful if building up an
13631 offset to later add to r2, perhaps in an indexed
13632 addressing mode instruction. Don't try to optimize.
13633 Unfortunately, the possibility of someone building up an
13634 offset like this or even with the HA relocs, means that
13635 we need to check the high insn when optimizing the low
13639 case R_PPC64_GOT_TLSLD16_HA:
13640 case R_PPC64_GOT_TLSGD16_HA:
13641 case R_PPC64_GOT_TPREL16_HA:
13642 case R_PPC64_GOT_DTPREL16_HA:
13643 case R_PPC64_GOT16_HA:
13644 case R_PPC64_TOC16_HA:
13645 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13646 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13648 bfd_byte *p = contents + (rel->r_offset & ~3);
13649 bfd_put_32 (input_bfd, NOP, p);
13653 case R_PPC64_GOT_TLSLD16_LO:
13654 case R_PPC64_GOT_TLSGD16_LO:
13655 case R_PPC64_GOT_TPREL16_LO_DS:
13656 case R_PPC64_GOT_DTPREL16_LO_DS:
13657 case R_PPC64_GOT16_LO:
13658 case R_PPC64_GOT16_LO_DS:
13659 case R_PPC64_TOC16_LO:
13660 case R_PPC64_TOC16_LO_DS:
13661 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13662 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13664 bfd_byte *p = contents + (rel->r_offset & ~3);
13665 insn = bfd_get_32 (input_bfd, p);
13666 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
13668 /* Transform addic to addi when we change reg. */
13669 insn &= ~((0x3f << 26) | (0x1f << 16));
13670 insn |= (14u << 26) | (2 << 16);
13674 insn &= ~(0x1f << 16);
13677 bfd_put_32 (input_bfd, insn, p);
13682 /* Do any further special processing. */
13688 case R_PPC64_ADDR16_HA:
13689 case R_PPC64_REL16_HA:
13690 case R_PPC64_ADDR16_HIGHERA:
13691 case R_PPC64_ADDR16_HIGHESTA:
13692 case R_PPC64_TOC16_HA:
13693 case R_PPC64_SECTOFF_HA:
13694 case R_PPC64_TPREL16_HA:
13695 case R_PPC64_DTPREL16_HA:
13696 case R_PPC64_TPREL16_HIGHER:
13697 case R_PPC64_TPREL16_HIGHERA:
13698 case R_PPC64_TPREL16_HIGHEST:
13699 case R_PPC64_TPREL16_HIGHESTA:
13700 case R_PPC64_DTPREL16_HIGHER:
13701 case R_PPC64_DTPREL16_HIGHERA:
13702 case R_PPC64_DTPREL16_HIGHEST:
13703 case R_PPC64_DTPREL16_HIGHESTA:
13704 /* It's just possible that this symbol is a weak symbol
13705 that's not actually defined anywhere. In that case,
13706 'sec' would be NULL, and we should leave the symbol
13707 alone (it will be set to zero elsewhere in the link). */
13712 case R_PPC64_GOT16_HA:
13713 case R_PPC64_PLTGOT16_HA:
13714 case R_PPC64_PLT16_HA:
13715 case R_PPC64_GOT_TLSGD16_HA:
13716 case R_PPC64_GOT_TLSLD16_HA:
13717 case R_PPC64_GOT_TPREL16_HA:
13718 case R_PPC64_GOT_DTPREL16_HA:
13719 /* Add 0x10000 if sign bit in 0:15 is set.
13720 Bits 0:15 are not used. */
13724 case R_PPC64_ADDR16_DS:
13725 case R_PPC64_ADDR16_LO_DS:
13726 case R_PPC64_GOT16_DS:
13727 case R_PPC64_GOT16_LO_DS:
13728 case R_PPC64_PLT16_LO_DS:
13729 case R_PPC64_SECTOFF_DS:
13730 case R_PPC64_SECTOFF_LO_DS:
13731 case R_PPC64_TOC16_DS:
13732 case R_PPC64_TOC16_LO_DS:
13733 case R_PPC64_PLTGOT16_DS:
13734 case R_PPC64_PLTGOT16_LO_DS:
13735 case R_PPC64_GOT_TPREL16_DS:
13736 case R_PPC64_GOT_TPREL16_LO_DS:
13737 case R_PPC64_GOT_DTPREL16_DS:
13738 case R_PPC64_GOT_DTPREL16_LO_DS:
13739 case R_PPC64_TPREL16_DS:
13740 case R_PPC64_TPREL16_LO_DS:
13741 case R_PPC64_DTPREL16_DS:
13742 case R_PPC64_DTPREL16_LO_DS:
13743 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13745 /* If this reloc is against an lq insn, then the value must be
13746 a multiple of 16. This is somewhat of a hack, but the
13747 "correct" way to do this by defining _DQ forms of all the
13748 _DS relocs bloats all reloc switches in this file. It
13749 doesn't seem to make much sense to use any of these relocs
13750 in data, so testing the insn should be safe. */
13751 if ((insn & (0x3f << 26)) == (56u << 26))
13753 if (((relocation + addend) & mask) != 0)
13755 info->callbacks->einfo
13756 (_("%P: %H: error: %s not a multiple of %u\n"),
13757 input_bfd, input_section, rel->r_offset,
13758 ppc64_elf_howto_table[r_type]->name,
13760 bfd_set_error (bfd_error_bad_value);
13767 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13768 because such sections are not SEC_ALLOC and thus ld.so will
13769 not process them. */
13770 if (unresolved_reloc
13771 && !((input_section->flags & SEC_DEBUGGING) != 0
13772 && h->elf.def_dynamic)
13773 && _bfd_elf_section_offset (output_bfd, info, input_section,
13774 rel->r_offset) != (bfd_vma) -1)
13776 info->callbacks->einfo
13777 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
13778 input_bfd, input_section, rel->r_offset,
13779 ppc64_elf_howto_table[(int) r_type]->name,
13780 h->elf.root.root.string);
13784 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
13792 if (r != bfd_reloc_ok)
13794 if (sym_name == NULL)
13795 sym_name = "(null)";
13796 if (r == bfd_reloc_overflow)
13801 && h->elf.root.type == bfd_link_hash_undefweak
13802 && ppc64_elf_howto_table[r_type]->pc_relative)
13804 /* Assume this is a call protected by other code that
13805 detects the symbol is undefined. If this is the case,
13806 we can safely ignore the overflow. If not, the
13807 program is hosed anyway, and a little warning isn't
13813 if (!((*info->callbacks->reloc_overflow)
13814 (info, (h ? &h->elf.root : NULL), sym_name,
13815 ppc64_elf_howto_table[r_type]->name,
13816 orig_addend, input_bfd, input_section, rel->r_offset)))
13821 info->callbacks->einfo
13822 (_("%P: %H: %s reloc against `%s': error %d\n"),
13823 input_bfd, input_section, rel->r_offset,
13824 ppc64_elf_howto_table[r_type]->name,
13832 /* If we're emitting relocations, then shortly after this function
13833 returns, reloc offsets and addends for this section will be
13834 adjusted. Worse, reloc symbol indices will be for the output
13835 file rather than the input. Save a copy of the relocs for
13836 opd_entry_value. */
13837 if (is_opd && (info->emitrelocations || info->relocatable))
13840 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13841 rel = bfd_alloc (input_bfd, amt);
13842 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13843 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13846 memcpy (rel, relocs, amt);
13851 /* Adjust the value of any local symbols in opd sections. */
13854 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13855 const char *name ATTRIBUTE_UNUSED,
13856 Elf_Internal_Sym *elfsym,
13857 asection *input_sec,
13858 struct elf_link_hash_entry *h)
13860 struct _opd_sec_data *opd;
13867 opd = get_opd_info (input_sec);
13868 if (opd == NULL || opd->adjust == NULL)
13871 value = elfsym->st_value - input_sec->output_offset;
13872 if (!info->relocatable)
13873 value -= input_sec->output_section->vma;
13875 adjust = opd->adjust[value / 8];
13879 elfsym->st_value += adjust;
13883 /* Finish up dynamic symbol handling. We set the contents of various
13884 dynamic sections here. */
13887 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13888 struct bfd_link_info *info,
13889 struct elf_link_hash_entry *h,
13890 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
13892 struct ppc_link_hash_table *htab;
13893 struct plt_entry *ent;
13894 Elf_Internal_Rela rela;
13897 htab = ppc_hash_table (info);
13901 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13902 if (ent->plt.offset != (bfd_vma) -1)
13904 /* This symbol has an entry in the procedure linkage
13905 table. Set it up. */
13906 if (!htab->elf.dynamic_sections_created
13907 || h->dynindx == -1)
13909 BFD_ASSERT (h->type == STT_GNU_IFUNC
13911 && (h->root.type == bfd_link_hash_defined
13912 || h->root.type == bfd_link_hash_defweak));
13913 rela.r_offset = (htab->iplt->output_section->vma
13914 + htab->iplt->output_offset
13915 + ent->plt.offset);
13916 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13917 rela.r_addend = (h->root.u.def.value
13918 + h->root.u.def.section->output_offset
13919 + h->root.u.def.section->output_section->vma
13921 loc = (htab->reliplt->contents
13922 + (htab->reliplt->reloc_count++
13923 * sizeof (Elf64_External_Rela)));
13927 rela.r_offset = (htab->plt->output_section->vma
13928 + htab->plt->output_offset
13929 + ent->plt.offset);
13930 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13931 rela.r_addend = ent->addend;
13932 loc = (htab->relplt->contents
13933 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13934 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
13936 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13941 /* This symbol needs a copy reloc. Set it up. */
13943 if (h->dynindx == -1
13944 || (h->root.type != bfd_link_hash_defined
13945 && h->root.type != bfd_link_hash_defweak)
13946 || htab->relbss == NULL)
13949 rela.r_offset = (h->root.u.def.value
13950 + h->root.u.def.section->output_section->vma
13951 + h->root.u.def.section->output_offset);
13952 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13954 loc = htab->relbss->contents;
13955 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
13956 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13962 /* Used to decide how to sort relocs in an optimal manner for the
13963 dynamic linker, before writing them out. */
13965 static enum elf_reloc_type_class
13966 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
13968 enum elf_ppc64_reloc_type r_type;
13970 r_type = ELF64_R_TYPE (rela->r_info);
13973 case R_PPC64_RELATIVE:
13974 return reloc_class_relative;
13975 case R_PPC64_JMP_SLOT:
13976 return reloc_class_plt;
13978 return reloc_class_copy;
13980 return reloc_class_normal;
13984 /* Finish up the dynamic sections. */
13987 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
13988 struct bfd_link_info *info)
13990 struct ppc_link_hash_table *htab;
13994 htab = ppc_hash_table (info);
13998 dynobj = htab->elf.dynobj;
13999 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
14001 if (htab->elf.dynamic_sections_created)
14003 Elf64_External_Dyn *dyncon, *dynconend;
14005 if (sdyn == NULL || htab->got == NULL)
14008 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14009 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14010 for (; dyncon < dynconend; dyncon++)
14012 Elf_Internal_Dyn dyn;
14015 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14022 case DT_PPC64_GLINK:
14024 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14025 /* We stupidly defined DT_PPC64_GLINK to be the start
14026 of glink rather than the first entry point, which is
14027 what ld.so needs, and now have a bigger stub to
14028 support automatic multiple TOCs. */
14029 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
14033 s = bfd_get_section_by_name (output_bfd, ".opd");
14036 dyn.d_un.d_ptr = s->vma;
14039 case DT_PPC64_OPDSZ:
14040 s = bfd_get_section_by_name (output_bfd, ".opd");
14043 dyn.d_un.d_val = s->size;
14048 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14053 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14057 dyn.d_un.d_val = htab->relplt->size;
14061 /* Don't count procedure linkage table relocs in the
14062 overall reloc count. */
14066 dyn.d_un.d_val -= s->size;
14070 /* We may not be using the standard ELF linker script.
14071 If .rela.plt is the first .rela section, we adjust
14072 DT_RELA to not include it. */
14076 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14078 dyn.d_un.d_ptr += s->size;
14082 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14086 if (htab->got != NULL && htab->got->size != 0)
14088 /* Fill in the first entry in the global offset table.
14089 We use it to hold the link-time TOCbase. */
14090 bfd_put_64 (output_bfd,
14091 elf_gp (output_bfd) + TOC_BASE_OFF,
14092 htab->got->contents);
14094 /* Set .got entry size. */
14095 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
14098 if (htab->plt != NULL && htab->plt->size != 0)
14100 /* Set .plt entry size. */
14101 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
14105 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14106 brlt ourselves if emitrelocations. */
14107 if (htab->brlt != NULL
14108 && htab->brlt->reloc_count != 0
14109 && !_bfd_elf_link_output_relocs (output_bfd,
14111 elf_section_data (htab->brlt)->rela.hdr,
14112 elf_section_data (htab->brlt)->relocs,
14116 if (htab->glink != NULL
14117 && htab->glink->reloc_count != 0
14118 && !_bfd_elf_link_output_relocs (output_bfd,
14120 elf_section_data (htab->glink)->rela.hdr,
14121 elf_section_data (htab->glink)->relocs,
14126 if (htab->glink_eh_frame != NULL
14127 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
14128 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14129 htab->glink_eh_frame,
14130 htab->glink_eh_frame->contents))
14133 /* We need to handle writing out multiple GOT sections ourselves,
14134 since we didn't add them to DYNOBJ. We know dynobj is the first
14136 while ((dynobj = dynobj->link_next) != NULL)
14140 if (!is_ppc64_elf (dynobj))
14143 s = ppc64_elf_tdata (dynobj)->got;
14146 && s->output_section != bfd_abs_section_ptr
14147 && !bfd_set_section_contents (output_bfd, s->output_section,
14148 s->contents, s->output_offset,
14151 s = ppc64_elf_tdata (dynobj)->relgot;
14154 && s->output_section != bfd_abs_section_ptr
14155 && !bfd_set_section_contents (output_bfd, s->output_section,
14156 s->contents, s->output_offset,
14164 #include "elf64-target.h"
14166 /* FreeBSD support */
14168 #undef TARGET_LITTLE_SYM
14169 #undef TARGET_LITTLE_NAME
14171 #undef TARGET_BIG_SYM
14172 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14173 #undef TARGET_BIG_NAME
14174 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14177 #define ELF_OSABI ELFOSABI_FREEBSD
14180 #define elf64_bed elf64_powerpc_fbsd_bed
14182 #include "elf64-target.h"