1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 static bfd_vma opd_entry_value
58 (asection *, bfd_vma, asection **, bfd_vma *);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_post_process_headers _bfd_elf_set_osabi
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE 24
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
131 /* TOC base pointers offset from start of TOC. */
132 #define TOC_BASE_OFF 0x8000
134 /* Offset of tp and dtp pointers from start of TLS block. */
135 #define TP_OFFSET 0x7000
136 #define DTP_OFFSET 0x8000
138 /* .plt call stub instructions. The normal stub is like this, but
139 sometimes the .plt entry crosses a 64k boundary and we need to
140 insert an addi to adjust r12. */
141 #define PLT_CALL_STUB_SIZE (7*4)
142 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
143 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
144 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
145 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
146 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
147 /* ld %r11,xxx+16@l(%r12) */
148 #define BCTR 0x4e800420 /* bctr */
151 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
152 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
153 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
154 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
156 #define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
157 #define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
158 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
159 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
160 #define BNECTR 0x4ca20420 /* bnectr+ */
161 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
163 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
164 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
166 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
168 /* glink call stub instructions. We enter with the index in R0. */
169 #define GLINK_CALL_STUB_SIZE (16*4)
173 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
174 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
176 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
177 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
178 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
187 #define NOP 0x60000000
189 /* Some other nops. */
190 #define CROR_151515 0x4def7b82
191 #define CROR_313131 0x4ffffb82
193 /* .glink entries for the first 32k functions are two instructions. */
194 #define LI_R0_0 0x38000000 /* li %r0,0 */
195 #define B_DOT 0x48000000 /* b . */
197 /* After that, we need two instructions to load the index, followed by
199 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
200 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
202 /* Instructions used by the save and restore reg functions. */
203 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
204 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
205 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
206 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
207 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
208 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
209 #define LI_R12_0 0x39800000 /* li %r12,0 */
210 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
211 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
212 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
213 #define BLR 0x4e800020 /* blr */
215 /* Since .opd is an array of descriptors and each entry will end up
216 with identical R_PPC64_RELATIVE relocs, there is really no need to
217 propagate .opd relocs; The dynamic linker should be taught to
218 relocate .opd without reloc entries. */
219 #ifndef NO_OPD_RELOCS
220 #define NO_OPD_RELOCS 0
223 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
225 /* Relocation HOWTO's. */
226 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
228 static reloc_howto_type ppc64_elf_howto_raw[] = {
229 /* This reloc does nothing. */
230 HOWTO (R_PPC64_NONE, /* type */
232 2, /* size (0 = byte, 1 = short, 2 = long) */
234 FALSE, /* pc_relative */
236 complain_overflow_dont, /* complain_on_overflow */
237 bfd_elf_generic_reloc, /* special_function */
238 "R_PPC64_NONE", /* name */
239 FALSE, /* partial_inplace */
242 FALSE), /* pcrel_offset */
244 /* A standard 32 bit relocation. */
245 HOWTO (R_PPC64_ADDR32, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_bitfield, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_PPC64_ADDR32", /* name */
254 FALSE, /* partial_inplace */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
259 /* An absolute 26 bit branch; the lower two bits must be zero.
260 FIXME: we don't check that, we just clear them. */
261 HOWTO (R_PPC64_ADDR24, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR24", /* name */
270 FALSE, /* partial_inplace */
272 0x03fffffc, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* A standard 16 bit relocation. */
276 HOWTO (R_PPC64_ADDR16, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_PPC64_ADDR16", /* name */
285 FALSE, /* partial_inplace */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* A 16 bit relocation without overflow. */
291 HOWTO (R_PPC64_ADDR16_LO, /* type */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE, /* pc_relative */
297 complain_overflow_dont,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_PPC64_ADDR16_LO", /* name */
300 FALSE, /* partial_inplace */
302 0xffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
305 /* Bits 16-31 of an address. */
306 HOWTO (R_PPC64_ADDR16_HI, /* type */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC64_ADDR16_HI", /* name */
315 FALSE, /* partial_inplace */
317 0xffff, /* dst_mask */
318 FALSE), /* pcrel_offset */
320 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
321 bits, treated as a signed number, is negative. */
322 HOWTO (R_PPC64_ADDR16_HA, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_dont, /* complain_on_overflow */
329 ppc64_elf_ha_reloc, /* special_function */
330 "R_PPC64_ADDR16_HA", /* name */
331 FALSE, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* An absolute 16 bit branch; the lower two bits must be zero.
337 FIXME: we don't check that, we just clear them. */
338 HOWTO (R_PPC64_ADDR14, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 ppc64_elf_branch_reloc, /* special_function */
346 "R_PPC64_ADDR14", /* name */
347 FALSE, /* partial_inplace */
349 0x0000fffc, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* An absolute 16 bit branch, for which bit 10 should be set to
353 indicate that the branch is expected to be taken. The lower two
354 bits must be zero. */
355 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 ppc64_elf_brtaken_reloc, /* special_function */
363 "R_PPC64_ADDR14_BRTAKEN",/* name */
364 FALSE, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is not expected to be taken. The lower
371 two bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE, /* pc_relative */
378 complain_overflow_bitfield, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc, /* special_function */
380 "R_PPC64_ADDR14_BRNTAKEN",/* name */
381 FALSE, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE), /* pcrel_offset */
386 /* A relative 26 bit branch; the lower two bits must be zero. */
387 HOWTO (R_PPC64_REL24, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 ppc64_elf_branch_reloc, /* special_function */
395 "R_PPC64_REL24", /* name */
396 FALSE, /* partial_inplace */
398 0x03fffffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
401 /* A relative 16 bit branch; the lower two bits must be zero. */
402 HOWTO (R_PPC64_REL14, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 TRUE, /* pc_relative */
408 complain_overflow_signed, /* complain_on_overflow */
409 ppc64_elf_branch_reloc, /* special_function */
410 "R_PPC64_REL14", /* name */
411 FALSE, /* partial_inplace */
413 0x0000fffc, /* dst_mask */
414 TRUE), /* pcrel_offset */
416 /* A relative 16 bit branch. Bit 10 should be set to indicate that
417 the branch is expected to be taken. The lower two bits must be
419 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 ppc64_elf_brtaken_reloc, /* special_function */
427 "R_PPC64_REL14_BRTAKEN", /* name */
428 FALSE, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is not expected to be taken. The lower two bits must
436 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_signed, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc, /* special_function */
444 "R_PPC64_REL14_BRNTAKEN",/* name */
445 FALSE, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
452 HOWTO (R_PPC64_GOT16, /* type */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE, /* pc_relative */
458 complain_overflow_signed, /* complain_on_overflow */
459 ppc64_elf_unhandled_reloc, /* special_function */
460 "R_PPC64_GOT16", /* name */
461 FALSE, /* partial_inplace */
463 0xffff, /* dst_mask */
464 FALSE), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
468 HOWTO (R_PPC64_GOT16_LO, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc, /* special_function */
476 "R_PPC64_GOT16_LO", /* name */
477 FALSE, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_HI, /* type */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_dont,/* complain_on_overflow */
491 ppc64_elf_unhandled_reloc, /* special_function */
492 "R_PPC64_GOT16_HI", /* name */
493 FALSE, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HA, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_dont,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc, /* special_function */
508 "R_PPC64_GOT16_HA", /* name */
509 FALSE, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* This is used only by the dynamic linker. The symbol should exist
515 both in the object being run and in some shared library. The
516 dynamic linker copies the data addressed by the symbol from the
517 shared library into the object, because the object being
518 run has to have the data at some particular address. */
519 HOWTO (R_PPC64_COPY, /* type */
521 0, /* this one is variable size */
523 FALSE, /* pc_relative */
525 complain_overflow_dont, /* complain_on_overflow */
526 ppc64_elf_unhandled_reloc, /* special_function */
527 "R_PPC64_COPY", /* name */
528 FALSE, /* partial_inplace */
531 FALSE), /* pcrel_offset */
533 /* Like R_PPC64_ADDR64, but used when setting global offset table
535 HOWTO (R_PPC64_GLOB_DAT, /* type */
537 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
539 FALSE, /* pc_relative */
541 complain_overflow_dont, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc, /* special_function */
543 "R_PPC64_GLOB_DAT", /* name */
544 FALSE, /* partial_inplace */
546 ONES (64), /* dst_mask */
547 FALSE), /* pcrel_offset */
549 /* Created by the link editor. Marks a procedure linkage table
550 entry for a symbol. */
551 HOWTO (R_PPC64_JMP_SLOT, /* type */
553 0, /* size (0 = byte, 1 = short, 2 = long) */
555 FALSE, /* pc_relative */
557 complain_overflow_dont, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc, /* special_function */
559 "R_PPC64_JMP_SLOT", /* name */
560 FALSE, /* partial_inplace */
563 FALSE), /* pcrel_offset */
565 /* Used only by the dynamic linker. When the object is run, this
566 doubleword64 is set to the load address of the object, plus the
568 HOWTO (R_PPC64_RELATIVE, /* type */
570 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_RELATIVE", /* name */
577 FALSE, /* partial_inplace */
579 ONES (64), /* dst_mask */
580 FALSE), /* pcrel_offset */
582 /* Like R_PPC64_ADDR32, but may be unaligned. */
583 HOWTO (R_PPC64_UADDR32, /* type */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
587 FALSE, /* pc_relative */
589 complain_overflow_bitfield, /* complain_on_overflow */
590 bfd_elf_generic_reloc, /* special_function */
591 "R_PPC64_UADDR32", /* name */
592 FALSE, /* partial_inplace */
594 0xffffffff, /* dst_mask */
595 FALSE), /* pcrel_offset */
597 /* Like R_PPC64_ADDR16, but may be unaligned. */
598 HOWTO (R_PPC64_UADDR16, /* type */
600 1, /* size (0 = byte, 1 = short, 2 = long) */
602 FALSE, /* pc_relative */
604 complain_overflow_bitfield, /* complain_on_overflow */
605 bfd_elf_generic_reloc, /* special_function */
606 "R_PPC64_UADDR16", /* name */
607 FALSE, /* partial_inplace */
609 0xffff, /* dst_mask */
610 FALSE), /* pcrel_offset */
612 /* 32-bit PC relative. */
613 HOWTO (R_PPC64_REL32, /* type */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
617 TRUE, /* pc_relative */
619 /* FIXME: Verify. Was complain_overflow_bitfield. */
620 complain_overflow_signed, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_REL32", /* name */
623 FALSE, /* partial_inplace */
625 0xffffffff, /* dst_mask */
626 TRUE), /* pcrel_offset */
628 /* 32-bit relocation to the symbol's procedure linkage table. */
629 HOWTO (R_PPC64_PLT32, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE, /* pc_relative */
635 complain_overflow_bitfield, /* complain_on_overflow */
636 ppc64_elf_unhandled_reloc, /* special_function */
637 "R_PPC64_PLT32", /* name */
638 FALSE, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
643 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
644 FIXME: R_PPC64_PLTREL32 not supported. */
645 HOWTO (R_PPC64_PLTREL32, /* type */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
649 TRUE, /* pc_relative */
651 complain_overflow_signed, /* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_PPC64_PLTREL32", /* name */
654 FALSE, /* partial_inplace */
656 0xffffffff, /* dst_mask */
657 TRUE), /* pcrel_offset */
659 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
661 HOWTO (R_PPC64_PLT16_LO, /* type */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE, /* pc_relative */
667 complain_overflow_dont, /* complain_on_overflow */
668 ppc64_elf_unhandled_reloc, /* special_function */
669 "R_PPC64_PLT16_LO", /* name */
670 FALSE, /* partial_inplace */
672 0xffff, /* dst_mask */
673 FALSE), /* pcrel_offset */
675 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
677 HOWTO (R_PPC64_PLT16_HI, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE, /* pc_relative */
683 complain_overflow_dont, /* complain_on_overflow */
684 ppc64_elf_unhandled_reloc, /* special_function */
685 "R_PPC64_PLT16_HI", /* name */
686 FALSE, /* partial_inplace */
688 0xffff, /* dst_mask */
689 FALSE), /* pcrel_offset */
691 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
693 HOWTO (R_PPC64_PLT16_HA, /* type */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
697 FALSE, /* pc_relative */
699 complain_overflow_dont, /* complain_on_overflow */
700 ppc64_elf_unhandled_reloc, /* special_function */
701 "R_PPC64_PLT16_HA", /* name */
702 FALSE, /* partial_inplace */
704 0xffff, /* dst_mask */
705 FALSE), /* pcrel_offset */
707 /* 16-bit section relative relocation. */
708 HOWTO (R_PPC64_SECTOFF, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE, /* pc_relative */
714 complain_overflow_bitfield, /* complain_on_overflow */
715 ppc64_elf_sectoff_reloc, /* special_function */
716 "R_PPC64_SECTOFF", /* name */
717 FALSE, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE), /* pcrel_offset */
722 /* Like R_PPC64_SECTOFF, but no overflow warning. */
723 HOWTO (R_PPC64_SECTOFF_LO, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_dont, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc, /* special_function */
731 "R_PPC64_SECTOFF_LO", /* name */
732 FALSE, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC64_SECTOFF_HI, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE, /* pc_relative */
744 complain_overflow_dont, /* complain_on_overflow */
745 ppc64_elf_sectoff_reloc, /* special_function */
746 "R_PPC64_SECTOFF_HI", /* name */
747 FALSE, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE), /* pcrel_offset */
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HA, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE, /* pc_relative */
759 complain_overflow_dont, /* complain_on_overflow */
760 ppc64_elf_sectoff_ha_reloc, /* special_function */
761 "R_PPC64_SECTOFF_HA", /* name */
762 FALSE, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE), /* pcrel_offset */
767 /* Like R_PPC64_REL24 without touching the two least significant bits. */
768 HOWTO (R_PPC64_REL30, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 TRUE, /* pc_relative */
774 complain_overflow_dont, /* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
776 "R_PPC64_REL30", /* name */
777 FALSE, /* partial_inplace */
779 0xfffffffc, /* dst_mask */
780 TRUE), /* pcrel_offset */
782 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
784 /* A standard 64-bit relocation. */
785 HOWTO (R_PPC64_ADDR64, /* type */
787 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 FALSE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC64_ADDR64", /* name */
794 FALSE, /* partial_inplace */
796 ONES (64), /* dst_mask */
797 FALSE), /* pcrel_offset */
799 /* The bits 32-47 of an address. */
800 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE, /* pc_relative */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_PPC64_ADDR16_HIGHER", /* name */
809 FALSE, /* partial_inplace */
811 0xffff, /* dst_mask */
812 FALSE), /* pcrel_offset */
814 /* The bits 32-47 of an address, plus 1 if the contents of the low
815 16 bits, treated as a signed number, is negative. */
816 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 FALSE, /* pc_relative */
822 complain_overflow_dont, /* complain_on_overflow */
823 ppc64_elf_ha_reloc, /* special_function */
824 "R_PPC64_ADDR16_HIGHERA", /* name */
825 FALSE, /* partial_inplace */
827 0xffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
830 /* The bits 48-63 of an address. */
831 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC64_ADDR16_HIGHEST", /* name */
840 FALSE, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* The bits 48-63 of an address, plus 1 if the contents of the low
846 16 bits, treated as a signed number, is negative. */
847 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE, /* pc_relative */
853 complain_overflow_dont, /* complain_on_overflow */
854 ppc64_elf_ha_reloc, /* special_function */
855 "R_PPC64_ADDR16_HIGHESTA", /* name */
856 FALSE, /* partial_inplace */
858 0xffff, /* dst_mask */
859 FALSE), /* pcrel_offset */
861 /* Like ADDR64, but may be unaligned. */
862 HOWTO (R_PPC64_UADDR64, /* type */
864 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
866 FALSE, /* pc_relative */
868 complain_overflow_dont, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
870 "R_PPC64_UADDR64", /* name */
871 FALSE, /* partial_inplace */
873 ONES (64), /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* 64-bit relative relocation. */
877 HOWTO (R_PPC64_REL64, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 TRUE, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_REL64", /* name */
886 FALSE, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 TRUE), /* pcrel_offset */
891 /* 64-bit relocation to the symbol's procedure linkage table. */
892 HOWTO (R_PPC64_PLT64, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 FALSE, /* pc_relative */
898 complain_overflow_dont, /* complain_on_overflow */
899 ppc64_elf_unhandled_reloc, /* special_function */
900 "R_PPC64_PLT64", /* name */
901 FALSE, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 FALSE), /* pcrel_offset */
906 /* 64-bit PC relative relocation to the symbol's procedure linkage
908 /* FIXME: R_PPC64_PLTREL64 not supported. */
909 HOWTO (R_PPC64_PLTREL64, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 TRUE, /* pc_relative */
915 complain_overflow_dont, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc, /* special_function */
917 "R_PPC64_PLTREL64", /* name */
918 FALSE, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 TRUE), /* pcrel_offset */
923 /* 16 bit TOC-relative relocation. */
925 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
926 HOWTO (R_PPC64_TOC16, /* type */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc64_elf_toc_reloc, /* special_function */
934 "R_PPC64_TOC16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation without overflow. */
942 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
943 HOWTO (R_PPC64_TOC16_LO, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_dont, /* complain_on_overflow */
950 ppc64_elf_toc_reloc, /* special_function */
951 "R_PPC64_TOC16_LO", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation, high 16 bits. */
959 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_HI, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE, /* pc_relative */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_toc_reloc, /* special_function */
968 "R_PPC64_TOC16_HI", /* name */
969 FALSE, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
975 contents of the low 16 bits, treated as a signed number, is
978 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
979 HOWTO (R_PPC64_TOC16_HA, /* type */
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_dont, /* complain_on_overflow */
986 ppc64_elf_toc_ha_reloc, /* special_function */
987 "R_PPC64_TOC16_HA", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* 64-bit relocation; insert value of TOC base (.TOC.). */
995 /* R_PPC64_TOC 51 doubleword64 .TOC. */
996 HOWTO (R_PPC64_TOC, /* type */
998 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_bitfield, /* complain_on_overflow */
1003 ppc64_elf_toc64_reloc, /* special_function */
1004 "R_PPC64_TOC", /* name */
1005 FALSE, /* partial_inplace */
1007 ONES (64), /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like R_PPC64_GOT16, but also informs the link editor that the
1011 value to relocate may (!) refer to a PLT entry which the link
1012 editor (a) may replace with the symbol value. If the link editor
1013 is unable to fully resolve the symbol, it may (b) create a PLT
1014 entry and store the address to the new PLT entry in the GOT.
1015 This permits lazy resolution of function symbols at run time.
1016 The link editor may also skip all of this and just (c) emit a
1017 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1018 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1019 HOWTO (R_PPC64_PLTGOT16, /* type */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE, /* pc_relative */
1025 complain_overflow_signed, /* complain_on_overflow */
1026 ppc64_elf_unhandled_reloc, /* special_function */
1027 "R_PPC64_PLTGOT16", /* name */
1028 FALSE, /* partial_inplace */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1033 /* Like R_PPC64_PLTGOT16, but without overflow. */
1034 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1035 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc64_elf_unhandled_reloc, /* special_function */
1043 "R_PPC64_PLTGOT16_LO", /* name */
1044 FALSE, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1050 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 FALSE, /* pc_relative */
1057 complain_overflow_dont, /* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HI", /* name */
1060 FALSE, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1065 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1066 1 if the contents of the low 16 bits, treated as a signed number,
1068 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE, /* pc_relative */
1075 complain_overflow_dont,/* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_HA", /* name */
1078 FALSE, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1083 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1084 HOWTO (R_PPC64_ADDR16_DS, /* type */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE, /* pc_relative */
1090 complain_overflow_bitfield, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
1092 "R_PPC64_ADDR16_DS", /* name */
1093 FALSE, /* partial_inplace */
1095 0xfffc, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE, /* pc_relative */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_PPC64_ADDR16_LO_DS",/* name */
1108 FALSE, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1113 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_GOT16_DS, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE, /* pc_relative */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc, /* special_function */
1122 "R_PPC64_GOT16_DS", /* name */
1123 FALSE, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE, /* pc_relative */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_GOT16_LO_DS", /* name */
1138 FALSE, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1143 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE, /* pc_relative */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc, /* special_function */
1152 "R_PPC64_PLT16_LO_DS", /* name */
1153 FALSE, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1158 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE, /* pc_relative */
1165 complain_overflow_bitfield, /* complain_on_overflow */
1166 ppc64_elf_sectoff_reloc, /* special_function */
1167 "R_PPC64_SECTOFF_DS", /* name */
1168 FALSE, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE, /* pc_relative */
1180 complain_overflow_dont, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc, /* special_function */
1182 "R_PPC64_SECTOFF_LO_DS",/* name */
1183 FALSE, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1188 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_TOC16_DS, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE, /* pc_relative */
1195 complain_overflow_signed, /* complain_on_overflow */
1196 ppc64_elf_toc_reloc, /* special_function */
1197 "R_PPC64_TOC16_DS", /* name */
1198 FALSE, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE, /* pc_relative */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc, /* special_function */
1212 "R_PPC64_TOC16_LO_DS", /* name */
1213 FALSE, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1218 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1219 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1220 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_signed, /* complain_on_overflow */
1227 ppc64_elf_unhandled_reloc, /* special_function */
1228 "R_PPC64_PLTGOT16_DS", /* name */
1229 FALSE, /* partial_inplace */
1231 0xfffc, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1235 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1236 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE, /* pc_relative */
1242 complain_overflow_dont, /* complain_on_overflow */
1243 ppc64_elf_unhandled_reloc, /* special_function */
1244 "R_PPC64_PLTGOT16_LO_DS",/* name */
1245 FALSE, /* partial_inplace */
1247 0xfffc, /* dst_mask */
1248 FALSE), /* pcrel_offset */
1250 /* Marker relocs for TLS. */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE, /* pc_relative */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_PPC64_TLS", /* name */
1260 FALSE, /* partial_inplace */
1263 FALSE), /* pcrel_offset */
1265 HOWTO (R_PPC64_TLSGD,
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont, /* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC64_TLSGD", /* name */
1274 FALSE, /* partial_inplace */
1277 FALSE), /* pcrel_offset */
1279 HOWTO (R_PPC64_TLSLD,
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLSLD", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TOCSAVE,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TOCSAVE", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 /* Computes the load module index of the load module that contains the
1308 definition of its TLS sym. */
1309 HOWTO (R_PPC64_DTPMOD64,
1311 4, /* size (0 = byte, 1 = short, 2 = long) */
1313 FALSE, /* pc_relative */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc, /* special_function */
1317 "R_PPC64_DTPMOD64", /* name */
1318 FALSE, /* partial_inplace */
1320 ONES (64), /* dst_mask */
1321 FALSE), /* pcrel_offset */
1323 /* Computes a dtv-relative displacement, the difference between the value
1324 of sym+add and the base address of the thread-local storage block that
1325 contains the definition of sym, minus 0x8000. */
1326 HOWTO (R_PPC64_DTPREL64,
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL64", /* name */
1335 FALSE, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 /* A 16 bit dtprel reloc. */
1341 HOWTO (R_PPC64_DTPREL16,
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_signed, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16", /* name */
1350 FALSE, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1355 /* Like DTPREL16, but no overflow. */
1356 HOWTO (R_PPC64_DTPREL16_LO,
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_LO", /* name */
1365 FALSE, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1370 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HI,
1372 16, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE, /* pc_relative */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HI", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HA,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HA", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HIGHER,
1402 32, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_dont, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HIGHER", /* name */
1410 FALSE, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1417 32, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE, /* pc_relative */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_HIGHERA", /* name */
1425 FALSE, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1432 48, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHEST", /* name */
1440 FALSE, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1460 /* Like DTPREL16, but for insns with a DS field. */
1461 HOWTO (R_PPC64_DTPREL16_DS,
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_DS", /* name */
1470 FALSE, /* partial_inplace */
1472 0xfffc, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1475 /* Like DTPREL16_DS, but no overflow. */
1476 HOWTO (R_PPC64_DTPREL16_LO_DS,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_LO_DS", /* name */
1485 FALSE, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1490 /* Computes a tp-relative displacement, the difference between the value of
1491 sym+add and the value of the thread pointer (r13). */
1492 HOWTO (R_PPC64_TPREL64,
1494 4, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL64", /* name */
1501 FALSE, /* partial_inplace */
1503 ONES (64), /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* A 16 bit tprel reloc. */
1507 HOWTO (R_PPC64_TPREL16,
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_signed, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16", /* name */
1516 FALSE, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Like TPREL16, but no overflow. */
1522 HOWTO (R_PPC64_TPREL16_LO,
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_LO", /* name */
1531 FALSE, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* Like TPREL16_LO, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HI,
1538 16, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE, /* pc_relative */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HI", /* name */
1546 FALSE, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1551 /* Like TPREL16_HI, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HA,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE, /* pc_relative */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HA", /* name */
1561 FALSE, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1566 /* Like TPREL16_HI, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HIGHER,
1568 32, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE, /* pc_relative */
1573 complain_overflow_dont, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HIGHER", /* name */
1576 FALSE, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1581 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHERA,
1583 32, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE, /* pc_relative */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_HIGHERA", /* name */
1591 FALSE, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHEST,
1598 48, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE, /* pc_relative */
1603 complain_overflow_dont, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_TPREL16_HIGHEST", /* name */
1606 FALSE, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1611 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE, /* pc_relative */
1618 complain_overflow_dont, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc, /* special_function */
1620 "R_PPC64_TPREL16_HIGHESTA", /* name */
1621 FALSE, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1626 /* Like TPREL16, but for insns with a DS field. */
1627 HOWTO (R_PPC64_TPREL16_DS,
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE, /* pc_relative */
1633 complain_overflow_signed, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_DS", /* name */
1636 FALSE, /* partial_inplace */
1638 0xfffc, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1641 /* Like TPREL16_DS, but no overflow. */
1642 HOWTO (R_PPC64_TPREL16_LO_DS,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE, /* pc_relative */
1648 complain_overflow_dont, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_LO_DS", /* name */
1651 FALSE, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1658 to the first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSGD16,
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_signed, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_GOT_TLSGD16", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* Like GOT_TLSGD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_GOT_TLSGD16_LO", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1690 16, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE, /* pc_relative */
1695 complain_overflow_dont, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc, /* special_function */
1697 "R_PPC64_GOT_TLSGD16_HI", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HA", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1718 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1719 with values (sym+add)@dtpmod and zero, and computes the offset to the
1720 first entry relative to the TOC base (r2). */
1721 HOWTO (R_PPC64_GOT_TLSLD16,
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE, /* pc_relative */
1727 complain_overflow_signed, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc, /* special_function */
1729 "R_PPC64_GOT_TLSLD16", /* name */
1730 FALSE, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE), /* pcrel_offset */
1735 /* Like GOT_TLSLD16, but no overflow. */
1736 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE, /* pc_relative */
1742 complain_overflow_dont, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSLD16_LO", /* name */
1745 FALSE, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1750 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1752 16, /* rightshift */
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE, /* pc_relative */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc, /* special_function */
1759 "R_PPC64_GOT_TLSLD16_HI", /* name */
1760 FALSE, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE, /* pc_relative */
1772 complain_overflow_dont, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HA", /* name */
1775 FALSE, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1781 the offset to the entry relative to the TOC base (r2). */
1782 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 FALSE, /* pc_relative */
1788 complain_overflow_signed, /* complain_on_overflow */
1789 ppc64_elf_unhandled_reloc, /* special_function */
1790 "R_PPC64_GOT_DTPREL16_DS", /* name */
1791 FALSE, /* partial_inplace */
1793 0xfffc, /* dst_mask */
1794 FALSE), /* pcrel_offset */
1796 /* Like GOT_DTPREL16_DS, but no overflow. */
1797 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE, /* pc_relative */
1803 complain_overflow_dont, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1806 FALSE, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1813 16, /* rightshift */
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE, /* pc_relative */
1818 complain_overflow_dont, /* complain_on_overflow */
1819 ppc64_elf_unhandled_reloc, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_HI", /* name */
1821 FALSE, /* partial_inplace */
1823 0xffff, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE, /* pc_relative */
1833 complain_overflow_dont, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HA", /* name */
1836 FALSE, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE), /* pcrel_offset */
1841 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1842 offset to the entry relative to the TOC base (r2). */
1843 HOWTO (R_PPC64_GOT_TPREL16_DS,
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_signed, /* complain_on_overflow */
1850 ppc64_elf_unhandled_reloc, /* special_function */
1851 "R_PPC64_GOT_TPREL16_DS", /* name */
1852 FALSE, /* partial_inplace */
1854 0xfffc, /* dst_mask */
1855 FALSE), /* pcrel_offset */
1857 /* Like GOT_TPREL16_DS, but no overflow. */
1858 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE, /* pc_relative */
1864 complain_overflow_dont, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc, /* special_function */
1866 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1867 FALSE, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE), /* pcrel_offset */
1872 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1873 HOWTO (R_PPC64_GOT_TPREL16_HI,
1874 16, /* rightshift */
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1877 FALSE, /* pc_relative */
1879 complain_overflow_dont, /* complain_on_overflow */
1880 ppc64_elf_unhandled_reloc, /* special_function */
1881 "R_PPC64_GOT_TPREL16_HI", /* name */
1882 FALSE, /* partial_inplace */
1884 0xffff, /* dst_mask */
1885 FALSE), /* pcrel_offset */
1887 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HA,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE, /* pc_relative */
1894 complain_overflow_dont, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HA", /* name */
1897 FALSE, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE), /* pcrel_offset */
1902 HOWTO (R_PPC64_JMP_IREL, /* type */
1904 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1906 FALSE, /* pc_relative */
1908 complain_overflow_dont, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc, /* special_function */
1910 "R_PPC64_JMP_IREL", /* name */
1911 FALSE, /* partial_inplace */
1914 FALSE), /* pcrel_offset */
1916 HOWTO (R_PPC64_IRELATIVE, /* type */
1918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_dont, /* complain_on_overflow */
1923 bfd_elf_generic_reloc, /* special_function */
1924 "R_PPC64_IRELATIVE", /* name */
1925 FALSE, /* partial_inplace */
1927 ONES (64), /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* A 16 bit relative relocation. */
1931 HOWTO (R_PPC64_REL16, /* type */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 TRUE, /* pc_relative */
1937 complain_overflow_bitfield, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 "R_PPC64_REL16", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 TRUE), /* pcrel_offset */
1945 /* A 16 bit relative relocation without overflow. */
1946 HOWTO (R_PPC64_REL16_LO, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE, /* pc_relative */
1952 complain_overflow_dont,/* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_REL16_LO", /* name */
1955 FALSE, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE), /* pcrel_offset */
1960 /* The high order 16 bits of a relative address. */
1961 HOWTO (R_PPC64_REL16_HI, /* type */
1962 16, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1965 TRUE, /* pc_relative */
1967 complain_overflow_dont, /* complain_on_overflow */
1968 bfd_elf_generic_reloc, /* special_function */
1969 "R_PPC64_REL16_HI", /* name */
1970 FALSE, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address, plus 1 if the contents of
1976 the low 16 bits, treated as a signed number, is negative. */
1977 HOWTO (R_PPC64_REL16_HA, /* type */
1978 16, /* rightshift */
1979 1, /* size (0 = byte, 1 = short, 2 = long) */
1981 TRUE, /* pc_relative */
1983 complain_overflow_dont, /* complain_on_overflow */
1984 ppc64_elf_ha_reloc, /* special_function */
1985 "R_PPC64_REL16_HA", /* name */
1986 FALSE, /* partial_inplace */
1988 0xffff, /* dst_mask */
1989 TRUE), /* pcrel_offset */
1991 /* GNU extension to record C++ vtable hierarchy. */
1992 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1994 0, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE, /* pc_relative */
1998 complain_overflow_dont, /* complain_on_overflow */
1999 NULL, /* special_function */
2000 "R_PPC64_GNU_VTINHERIT", /* name */
2001 FALSE, /* partial_inplace */
2004 FALSE), /* pcrel_offset */
2006 /* GNU extension to record C++ vtable member usage. */
2007 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2009 0, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 NULL, /* special_function */
2015 "R_PPC64_GNU_VTENTRY", /* name */
2016 FALSE, /* partial_inplace */
2019 FALSE), /* pcrel_offset */
2023 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2027 ppc_howto_init (void)
2029 unsigned int i, type;
2032 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2035 type = ppc64_elf_howto_raw[i].type;
2036 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2037 / sizeof (ppc64_elf_howto_table[0])));
2038 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2042 static reloc_howto_type *
2043 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2044 bfd_reloc_code_real_type code)
2046 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2048 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2049 /* Initialize howto table if needed. */
2057 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2059 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2061 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2063 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2065 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2067 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2069 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2071 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2073 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2075 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2077 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2079 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2081 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2083 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2085 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2087 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2089 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2091 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2093 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2095 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2097 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2099 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2101 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2103 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2105 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2107 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2109 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2111 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2113 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2115 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2117 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2119 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2121 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2123 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2125 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2127 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2129 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2131 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2133 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2135 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2137 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2139 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2141 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2143 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2145 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2147 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2149 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2151 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2153 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2155 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2157 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2159 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2161 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2163 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2165 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2167 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2169 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2171 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2173 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2175 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2177 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2179 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2181 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2183 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2185 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2187 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2189 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2191 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2193 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2195 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2197 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2199 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2201 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2203 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2205 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2207 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2209 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2211 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2213 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2215 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2217 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2219 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2221 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2223 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2225 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2227 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2229 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2231 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2233 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2235 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2237 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2239 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2241 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2243 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2245 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2247 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2249 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2251 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2253 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2255 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2257 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2259 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2261 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2263 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2265 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2267 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2269 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2273 return ppc64_elf_howto_table[r];
2276 static reloc_howto_type *
2277 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2283 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2285 if (ppc64_elf_howto_raw[i].name != NULL
2286 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2287 return &ppc64_elf_howto_raw[i];
2292 /* Set the howto pointer for a PowerPC ELF reloc. */
2295 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2296 Elf_Internal_Rela *dst)
2300 /* Initialize howto table if needed. */
2301 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2304 type = ELF64_R_TYPE (dst->r_info);
2305 if (type >= (sizeof (ppc64_elf_howto_table)
2306 / sizeof (ppc64_elf_howto_table[0])))
2308 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2310 type = R_PPC64_NONE;
2312 cache_ptr->howto = ppc64_elf_howto_table[type];
2315 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2317 static bfd_reloc_status_type
2318 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2319 void *data, asection *input_section,
2320 bfd *output_bfd, char **error_message)
2322 /* If this is a relocatable link (output_bfd test tells us), just
2323 call the generic function. Any adjustment will be done at final
2325 if (output_bfd != NULL)
2326 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2327 input_section, output_bfd, error_message);
2329 /* Adjust the addend for sign extension of the low 16 bits.
2330 We won't actually be using the low 16 bits, so trashing them
2332 reloc_entry->addend += 0x8000;
2333 return bfd_reloc_continue;
2336 static bfd_reloc_status_type
2337 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2341 if (output_bfd != NULL)
2342 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2343 input_section, output_bfd, error_message);
2345 if (strcmp (symbol->section->name, ".opd") == 0
2346 && (symbol->section->owner->flags & DYNAMIC) == 0)
2348 bfd_vma dest = opd_entry_value (symbol->section,
2349 symbol->value + reloc_entry->addend,
2351 if (dest != (bfd_vma) -1)
2352 reloc_entry->addend = dest - (symbol->value
2353 + symbol->section->output_section->vma
2354 + symbol->section->output_offset);
2356 return bfd_reloc_continue;
2359 static bfd_reloc_status_type
2360 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2361 void *data, asection *input_section,
2362 bfd *output_bfd, char **error_message)
2365 enum elf_ppc64_reloc_type r_type;
2366 bfd_size_type octets;
2367 /* Assume 'at' branch hints. */
2368 bfd_boolean is_isa_v2 = TRUE;
2370 /* If this is a relocatable link (output_bfd test tells us), just
2371 call the generic function. Any adjustment will be done at final
2373 if (output_bfd != NULL)
2374 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2375 input_section, output_bfd, error_message);
2377 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2378 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2379 insn &= ~(0x01 << 21);
2380 r_type = reloc_entry->howto->type;
2381 if (r_type == R_PPC64_ADDR14_BRTAKEN
2382 || r_type == R_PPC64_REL14_BRTAKEN)
2383 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2387 /* Set 'a' bit. This is 0b00010 in BO field for branch
2388 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2389 for branch on CTR insns (BO == 1a00t or 1a01t). */
2390 if ((insn & (0x14 << 21)) == (0x04 << 21))
2392 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2402 if (!bfd_is_com_section (symbol->section))
2403 target = symbol->value;
2404 target += symbol->section->output_section->vma;
2405 target += symbol->section->output_offset;
2406 target += reloc_entry->addend;
2408 from = (reloc_entry->address
2409 + input_section->output_offset
2410 + input_section->output_section->vma);
2412 /* Invert 'y' bit if not the default. */
2413 if ((bfd_signed_vma) (target - from) < 0)
2416 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2418 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2419 input_section, output_bfd, error_message);
2422 static bfd_reloc_status_type
2423 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2424 void *data, asection *input_section,
2425 bfd *output_bfd, char **error_message)
2427 /* If this is a relocatable link (output_bfd test tells us), just
2428 call the generic function. Any adjustment will be done at final
2430 if (output_bfd != NULL)
2431 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2432 input_section, output_bfd, error_message);
2434 /* Subtract the symbol section base address. */
2435 reloc_entry->addend -= symbol->section->output_section->vma;
2436 return bfd_reloc_continue;
2439 static bfd_reloc_status_type
2440 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2441 void *data, asection *input_section,
2442 bfd *output_bfd, char **error_message)
2444 /* If this is a relocatable link (output_bfd test tells us), just
2445 call the generic function. Any adjustment will be done at final
2447 if (output_bfd != NULL)
2448 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2449 input_section, output_bfd, error_message);
2451 /* Subtract the symbol section base address. */
2452 reloc_entry->addend -= symbol->section->output_section->vma;
2454 /* Adjust the addend for sign extension of the low 16 bits. */
2455 reloc_entry->addend += 0x8000;
2456 return bfd_reloc_continue;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd != NULL)
2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2471 input_section, output_bfd, error_message);
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2475 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2479 return bfd_reloc_continue;
2482 static bfd_reloc_status_type
2483 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2484 void *data, asection *input_section,
2485 bfd *output_bfd, char **error_message)
2489 /* If this is a relocatable link (output_bfd test tells us), just
2490 call the generic function. Any adjustment will be done at final
2492 if (output_bfd != NULL)
2493 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2494 input_section, output_bfd, error_message);
2496 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2498 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2500 /* Subtract the TOC base address. */
2501 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2503 /* Adjust the addend for sign extension of the low 16 bits. */
2504 reloc_entry->addend += 0x8000;
2505 return bfd_reloc_continue;
2508 static bfd_reloc_status_type
2509 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2510 void *data, asection *input_section,
2511 bfd *output_bfd, char **error_message)
2514 bfd_size_type octets;
2516 /* If this is a relocatable link (output_bfd test tells us), just
2517 call the generic function. Any adjustment will be done at final
2519 if (output_bfd != NULL)
2520 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2521 input_section, output_bfd, error_message);
2523 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2525 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2527 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2528 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2529 return bfd_reloc_ok;
2532 static bfd_reloc_status_type
2533 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2534 void *data, asection *input_section,
2535 bfd *output_bfd, char **error_message)
2537 /* If this is a relocatable link (output_bfd test tells us), just
2538 call the generic function. Any adjustment will be done at final
2540 if (output_bfd != NULL)
2541 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2542 input_section, output_bfd, error_message);
2544 if (error_message != NULL)
2546 static char buf[60];
2547 sprintf (buf, "generic linker can't handle %s",
2548 reloc_entry->howto->name);
2549 *error_message = buf;
2551 return bfd_reloc_dangerous;
2554 /* Track GOT entries needed for a given symbol. We might need more
2555 than one got entry per symbol. */
2558 struct got_entry *next;
2560 /* The symbol addend that we'll be placing in the GOT. */
2563 /* Unlike other ELF targets, we use separate GOT entries for the same
2564 symbol referenced from different input files. This is to support
2565 automatic multiple TOC/GOT sections, where the TOC base can vary
2566 from one input file to another. After partitioning into TOC groups
2567 we merge entries within the group.
2569 Point to the BFD owning this GOT entry. */
2572 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2573 TLS_TPREL or TLS_DTPREL for tls entries. */
2574 unsigned char tls_type;
2576 /* Non-zero if got.ent points to real entry. */
2577 unsigned char is_indirect;
2579 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2582 bfd_signed_vma refcount;
2584 struct got_entry *ent;
2588 /* The same for PLT. */
2591 struct plt_entry *next;
2597 bfd_signed_vma refcount;
2602 struct ppc64_elf_obj_tdata
2604 struct elf_obj_tdata elf;
2606 /* Shortcuts to dynamic linker sections. */
2610 /* Used during garbage collection. We attach global symbols defined
2611 on removed .opd entries to this section so that the sym is removed. */
2612 asection *deleted_section;
2614 /* TLS local dynamic got entry handling. Support for multiple GOT
2615 sections means we potentially need one of these for each input bfd. */
2616 struct got_entry tlsld_got;
2618 /* A copy of relocs before they are modified for --emit-relocs. */
2619 Elf_Internal_Rela *opd_relocs;
2621 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2622 the reloc to be in the range -32768 to 32767. */
2623 unsigned int has_small_toc_reloc : 1;
2625 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2626 instruction not one we handle. */
2627 unsigned int unexpected_toc_insn : 1;
2630 #define ppc64_elf_tdata(bfd) \
2631 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2633 #define ppc64_tlsld_got(bfd) \
2634 (&ppc64_elf_tdata (bfd)->tlsld_got)
2636 #define is_ppc64_elf(bfd) \
2637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2638 && elf_object_id (bfd) == PPC64_ELF_DATA)
2640 /* Override the generic function because we store some extras. */
2643 ppc64_elf_mkobject (bfd *abfd)
2645 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2649 /* Fix bad default arch selected for a 64 bit input bfd when the
2650 default is 32 bit. */
2653 ppc64_elf_object_p (bfd *abfd)
2655 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2657 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2659 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2661 /* Relies on arch after 32 bit default being 64 bit default. */
2662 abfd->arch_info = abfd->arch_info->next;
2663 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2669 /* Support for core dump NOTE sections. */
2672 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2674 size_t offset, size;
2676 if (note->descsz != 504)
2680 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2683 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
2689 /* Make a ".reg/999" section. */
2690 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2691 size, note->descpos + offset);
2695 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2697 if (note->descsz != 136)
2700 elf_tdata (abfd)->core_pid
2701 = bfd_get_32 (abfd, note->descdata + 24);
2702 elf_tdata (abfd)->core_program
2703 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2704 elf_tdata (abfd)->core_command
2705 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2711 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2724 va_start (ap, note_type);
2725 memset (data, 0, sizeof (data));
2726 strncpy (data + 40, va_arg (ap, const char *), 16);
2727 strncpy (data + 56, va_arg (ap, const char *), 80);
2729 return elfcore_write_note (abfd, buf, bufsiz,
2730 "CORE", note_type, data, sizeof (data));
2741 va_start (ap, note_type);
2742 memset (data, 0, 112);
2743 pid = va_arg (ap, long);
2744 bfd_put_32 (abfd, pid, data + 32);
2745 cursig = va_arg (ap, int);
2746 bfd_put_16 (abfd, cursig, data + 12);
2747 greg = va_arg (ap, const void *);
2748 memcpy (data + 112, greg, 384);
2749 memset (data + 496, 0, 8);
2751 return elfcore_write_note (abfd, buf, bufsiz,
2752 "CORE", note_type, data, sizeof (data));
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2767 { NULL, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type {
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection **func_sec;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2816 if (!sec->used_by_bfd)
2818 struct _ppc64_elf_section_data *sdata;
2819 bfd_size_type amt = sizeof (*sdata);
2821 sdata = bfd_zalloc (abfd, amt);
2824 sec->used_by_bfd = sdata;
2827 return _bfd_elf_new_section_hook (abfd, sec);
2830 static struct _opd_sec_data *
2831 get_opd_info (asection * sec)
2834 && ppc64_elf_section_data (sec) != NULL
2835 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2836 return &ppc64_elf_section_data (sec)->u.opd;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap, const void *bp)
2848 const asymbol *a = * (const asymbol **) ap;
2849 const asymbol *b = * (const asymbol **) bp;
2851 /* Section symbols first. */
2852 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2854 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2857 /* then .opd symbols. */
2858 if (strcmp (a->section->name, ".opd") == 0
2859 && strcmp (b->section->name, ".opd") != 0)
2861 if (strcmp (a->section->name, ".opd") != 0
2862 && strcmp (b->section->name, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 == (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2872 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 != (SEC_CODE | SEC_ALLOC)
2874 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 == (SEC_CODE | SEC_ALLOC))
2878 if (synthetic_relocatable)
2880 if (a->section->id < b->section->id)
2883 if (a->section->id > b->section->id)
2887 if (a->value + a->section->vma < b->value + b->section->vma)
2890 if (a->value + a->section->vma > b->value + b->section->vma)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2898 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2901 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2904 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2907 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2910 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2913 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2916 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2933 mid = (lo + hi) >> 1;
2934 if (syms[mid]->value + syms[mid]->section->vma < value)
2936 else if (syms[mid]->value + syms[mid]->section->vma > value)
2946 mid = (lo + hi) >> 1;
2947 if (syms[mid]->section->id < id)
2949 else if (syms[mid]->section->id > id)
2951 else if (syms[mid]->value < value)
2953 else if (syms[mid]->value > value)
2963 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2965 bfd_vma vma = *(bfd_vma *) ptr;
2966 return ((section->flags & SEC_ALLOC) != 0
2967 && section->vma <= vma
2968 && vma < section->vma + section->size);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2976 long static_count, asymbol **static_syms,
2977 long dyn_count, asymbol **dyn_syms,
2984 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2986 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2991 opd = bfd_get_section_by_name (abfd, ".opd");
2995 symcount = static_count;
2997 symcount += dyn_count;
3001 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3005 if (!relocatable && static_count != 0 && dyn_count != 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms, static_syms, static_count * sizeof (*syms));
3009 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3011 else if (!relocatable && static_count == 0)
3012 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3014 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3016 synthetic_relocatable = relocatable;
3017 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3019 if (!relocatable && symcount > 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i = 1, j = 1; i < symcount; ++i)
3026 if (syms[i - 1]->value + syms[i - 1]->section->vma
3027 != syms[i]->value + syms[i]->section->vma)
3028 syms[j++] = syms[i];
3033 if (strcmp (syms[i]->section->name, ".opd") == 0)
3037 for (; i < symcount; ++i)
3038 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3039 != (SEC_CODE | SEC_ALLOC))
3040 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3044 for (; i < symcount; ++i)
3045 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3049 for (; i < symcount; ++i)
3050 if (strcmp (syms[i]->section->name, ".opd") != 0)
3054 for (; i < symcount; ++i)
3055 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3056 != (SEC_CODE | SEC_ALLOC))
3064 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3069 if (opdsymend == secsymend)
3072 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3073 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3077 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3084 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3088 while (r < opd->relocation + relcount
3089 && r->address < syms[i]->value + opd->vma)
3092 if (r == opd->relocation + relcount)
3095 if (r->address != syms[i]->value + opd->vma)
3098 if (r->howto->type != R_PPC64_ADDR64)
3101 sym = *r->sym_ptr_ptr;
3102 if (!sym_exists_at (syms, opdsymend, symcount,
3103 sym->section->id, sym->value + r->addend))
3106 size += sizeof (asymbol);
3107 size += strlen (syms[i]->name) + 2;
3111 s = *ret = bfd_malloc (size);
3118 names = (char *) (s + count);
3120 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3124 while (r < opd->relocation + relcount
3125 && r->address < syms[i]->value + opd->vma)
3128 if (r == opd->relocation + relcount)
3131 if (r->address != syms[i]->value + opd->vma)
3134 if (r->howto->type != R_PPC64_ADDR64)
3137 sym = *r->sym_ptr_ptr;
3138 if (!sym_exists_at (syms, opdsymend, symcount,
3139 sym->section->id, sym->value + r->addend))
3144 s->flags |= BSF_SYNTHETIC;
3145 s->section = sym->section;
3146 s->value = sym->value + r->addend;
3149 len = strlen (syms[i]->name);
3150 memcpy (names, syms[i]->name, len + 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s->udata.p = syms[i];
3161 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3165 bfd_vma glink_vma = 0, resolv_vma = 0;
3166 asection *dynamic, *glink = NULL, *relplt = NULL;
3169 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3173 free_contents_and_exit:
3181 for (i = secsymend; i < opdsymend; ++i)
3185 /* Ignore bogus symbols. */
3186 if (syms[i]->value > opd->size - 8)
3189 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3190 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3193 size += sizeof (asymbol);
3194 size += strlen (syms[i]->name) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3202 bfd_byte *dynbuf, *extdyn, *extdynend;
3204 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3206 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3207 goto free_contents_and_exit;
3209 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3210 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3213 extdynend = extdyn + dynamic->size;
3214 for (; extdyn < extdynend; extdyn += extdynsize)
3216 Elf_Internal_Dyn dyn;
3217 (*swap_dyn_in) (abfd, extdyn, &dyn);
3219 if (dyn.d_tag == DT_NULL)
3222 if (dyn.d_tag == DT_PPC64_GLINK)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma = dyn.d_un.d_val + 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink = bfd_sections_find_if (abfd, section_covers_vma,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd, glink, buf,
3245 glink_vma + 4 - glink->vma, 4))
3247 unsigned int insn = bfd_get_32 (abfd, buf);
3249 if ((insn & ~0x3fffffc) == 0)
3250 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3254 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3256 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3259 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3260 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3261 goto free_contents_and_exit;
3263 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3264 size += plt_count * sizeof (asymbol);
3266 p = relplt->relocation;
3267 for (i = 0; i < plt_count; i++, p++)
3269 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3271 size += sizeof ("+0x") - 1 + 16;
3276 s = *ret = bfd_malloc (size);
3278 goto free_contents_and_exit;
3280 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3282 for (i = secsymend; i < opdsymend; ++i)
3286 if (syms[i]->value > opd->size - 8)
3289 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3290 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3294 asection *sec = abfd->sections;
3301 long mid = (lo + hi) >> 1;
3302 if (syms[mid]->section->vma < ent)
3304 else if (syms[mid]->section->vma > ent)
3308 sec = syms[mid]->section;
3313 if (lo >= hi && lo > codesecsym)
3314 sec = syms[lo - 1]->section;
3316 for (; sec != NULL; sec = sec->next)
3320 /* SEC_LOAD may not be set if SEC is from a separate debug
3322 if ((sec->flags & SEC_ALLOC) == 0)
3324 if ((sec->flags & SEC_CODE) != 0)
3327 s->flags |= BSF_SYNTHETIC;
3328 s->value = ent - s->section->vma;
3331 len = strlen (syms[i]->name);
3332 memcpy (names, syms[i]->name, len + 1);
3334 /* Have udata.p point back to the original symbol this
3335 synthetic symbol was derived from. */
3336 s->udata.p = syms[i];
3342 if (glink != NULL && relplt != NULL)
3346 /* Add a symbol for the main glink trampoline. */
3347 memset (s, 0, sizeof *s);
3349 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3351 s->value = resolv_vma - glink->vma;
3353 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3354 names += sizeof ("__glink_PLTresolve");
3359 /* FIXME: It would be very much nicer to put sym@plt on the
3360 stub rather than on the glink branch table entry. The
3361 objdump disassembler would then use a sensible symbol
3362 name on plt calls. The difficulty in doing so is
3363 a) finding the stubs, and,
3364 b) matching stubs against plt entries, and,
3365 c) there can be multiple stubs for a given plt entry.
3367 Solving (a) could be done by code scanning, but older
3368 ppc64 binaries used different stubs to current code.
3369 (b) is the tricky one since you need to known the toc
3370 pointer for at least one function that uses a pic stub to
3371 be able to calculate the plt address referenced.
3372 (c) means gdb would need to set multiple breakpoints (or
3373 find the glink branch itself) when setting breakpoints
3374 for pending shared library loads. */
3375 p = relplt->relocation;
3376 for (i = 0; i < plt_count; i++, p++)
3380 *s = **p->sym_ptr_ptr;
3381 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3382 we are defining a symbol, ensure one of them is set. */
3383 if ((s->flags & BSF_LOCAL) == 0)
3384 s->flags |= BSF_GLOBAL;
3385 s->flags |= BSF_SYNTHETIC;
3387 s->value = glink_vma - glink->vma;
3390 len = strlen ((*p->sym_ptr_ptr)->name);
3391 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3395 memcpy (names, "+0x", sizeof ("+0x") - 1);
3396 names += sizeof ("+0x") - 1;
3397 bfd_sprintf_vma (abfd, names, p->addend);
3398 names += strlen (names);
3400 memcpy (names, "@plt", sizeof ("@plt"));
3401 names += sizeof ("@plt");
3416 /* The following functions are specific to the ELF linker, while
3417 functions above are used generally. Those named ppc64_elf_* are
3418 called by the main ELF linker code. They appear in this file more
3419 or less in the order in which they are called. eg.
3420 ppc64_elf_check_relocs is called early in the link process,
3421 ppc64_elf_finish_dynamic_sections is one of the last functions
3424 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3425 functions have both a function code symbol and a function descriptor
3426 symbol. A call to foo in a relocatable object file looks like:
3433 The function definition in another object file might be:
3437 . .quad .TOC.@tocbase
3443 When the linker resolves the call during a static link, the branch
3444 unsurprisingly just goes to .foo and the .opd information is unused.
3445 If the function definition is in a shared library, things are a little
3446 different: The call goes via a plt call stub, the opd information gets
3447 copied to the plt, and the linker patches the nop.
3455 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3456 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3457 . std 2,40(1) # this is the general idea
3465 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3467 The "reloc ()" notation is supposed to indicate that the linker emits
3468 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3471 What are the difficulties here? Well, firstly, the relocations
3472 examined by the linker in check_relocs are against the function code
3473 sym .foo, while the dynamic relocation in the plt is emitted against
3474 the function descriptor symbol, foo. Somewhere along the line, we need
3475 to carefully copy dynamic link information from one symbol to the other.
3476 Secondly, the generic part of the elf linker will make .foo a dynamic
3477 symbol as is normal for most other backends. We need foo dynamic
3478 instead, at least for an application final link. However, when
3479 creating a shared library containing foo, we need to have both symbols
3480 dynamic so that references to .foo are satisfied during the early
3481 stages of linking. Otherwise the linker might decide to pull in a
3482 definition from some other object, eg. a static library.
3484 Update: As of August 2004, we support a new convention. Function
3485 calls may use the function descriptor symbol, ie. "bl foo". This
3486 behaves exactly as "bl .foo". */
3488 /* Of those relocs that might be copied as dynamic relocs, this function
3489 selects those that must be copied when linking a shared library,
3490 even when the symbol is local. */
3493 must_be_dyn_reloc (struct bfd_link_info *info,
3494 enum elf_ppc64_reloc_type r_type)
3506 case R_PPC64_TPREL16:
3507 case R_PPC64_TPREL16_LO:
3508 case R_PPC64_TPREL16_HI:
3509 case R_PPC64_TPREL16_HA:
3510 case R_PPC64_TPREL16_DS:
3511 case R_PPC64_TPREL16_LO_DS:
3512 case R_PPC64_TPREL16_HIGHER:
3513 case R_PPC64_TPREL16_HIGHERA:
3514 case R_PPC64_TPREL16_HIGHEST:
3515 case R_PPC64_TPREL16_HIGHESTA:
3516 case R_PPC64_TPREL64:
3517 return !info->executable;
3521 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3522 copying dynamic variables from a shared lib into an app's dynbss
3523 section, and instead use a dynamic relocation to point into the
3524 shared lib. With code that gcc generates, it's vital that this be
3525 enabled; In the PowerPC64 ABI, the address of a function is actually
3526 the address of a function descriptor, which resides in the .opd
3527 section. gcc uses the descriptor directly rather than going via the
3528 GOT as some other ABI's do, which means that initialized function
3529 pointers must reference the descriptor. Thus, a function pointer
3530 initialized to the address of a function in a shared library will
3531 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3532 redefines the function descriptor symbol to point to the copy. This
3533 presents a problem as a plt entry for that function is also
3534 initialized from the function descriptor symbol and the copy reloc
3535 may not be initialized first. */
3536 #define ELIMINATE_COPY_RELOCS 1
3538 /* Section name for stubs is the associated section name plus this
3540 #define STUB_SUFFIX ".stub"
3543 ppc_stub_long_branch:
3544 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3545 destination, but a 24 bit branch in a stub section will reach.
3548 ppc_stub_plt_branch:
3549 Similar to the above, but a 24 bit branch in the stub section won't
3550 reach its destination.
3551 . addis %r12,%r2,xxx@toc@ha
3552 . ld %r11,xxx@toc@l(%r12)
3557 Used to call a function in a shared library. If it so happens that
3558 the plt entry referenced crosses a 64k boundary, then an extra
3559 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3560 . addis %r12,%r2,xxx@toc@ha
3562 . ld %r11,xxx+0@toc@l(%r12)
3564 . ld %r2,xxx+8@toc@l(%r12)
3565 . ld %r11,xxx+16@toc@l(%r12)
3568 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3569 code to adjust the value and save r2 to support multiple toc sections.
3570 A ppc_stub_long_branch with an r2 offset looks like:
3572 . addis %r2,%r2,off@ha
3573 . addi %r2,%r2,off@l
3576 A ppc_stub_plt_branch with an r2 offset looks like:
3578 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx@toc@l(%r12)
3580 . addis %r2,%r2,off@ha
3581 . addi %r2,%r2,off@l
3585 In cases where the "addis" instruction would add zero, the "addis" is
3586 omitted and following instructions modified slightly in some cases.
3589 enum ppc_stub_type {
3591 ppc_stub_long_branch,
3592 ppc_stub_long_branch_r2off,
3593 ppc_stub_plt_branch,
3594 ppc_stub_plt_branch_r2off,
3596 ppc_stub_plt_call_r2save
3599 struct ppc_stub_hash_entry {
3601 /* Base hash table entry structure. */
3602 struct bfd_hash_entry root;
3604 enum ppc_stub_type stub_type;
3606 /* The stub section. */
3609 /* Offset within stub_sec of the beginning of this stub. */
3610 bfd_vma stub_offset;
3612 /* Given the symbol's value and its section we can determine its final
3613 value when building the stubs (so the stub knows where to jump. */
3614 bfd_vma target_value;
3615 asection *target_section;
3617 /* The symbol table entry, if any, that this was derived from. */
3618 struct ppc_link_hash_entry *h;
3619 struct plt_entry *plt_ent;
3621 /* And the reloc addend that this was derived from. */
3624 /* Where this stub is being called from, or, in the case of combined
3625 stub sections, the first input section in the group. */
3629 struct ppc_branch_hash_entry {
3631 /* Base hash table entry structure. */
3632 struct bfd_hash_entry root;
3634 /* Offset within branch lookup table. */
3635 unsigned int offset;
3637 /* Generation marker. */
3641 struct ppc_link_hash_entry
3643 struct elf_link_hash_entry elf;
3646 /* A pointer to the most recently used stub hash entry against this
3648 struct ppc_stub_hash_entry *stub_cache;
3650 /* A pointer to the next symbol starting with a '.' */
3651 struct ppc_link_hash_entry *next_dot_sym;
3654 /* Track dynamic relocs copied for this symbol. */
3655 struct elf_dyn_relocs *dyn_relocs;
3657 /* Link between function code and descriptor symbols. */
3658 struct ppc_link_hash_entry *oh;
3660 /* Flag function code and descriptor symbols. */
3661 unsigned int is_func:1;
3662 unsigned int is_func_descriptor:1;
3663 unsigned int fake:1;
3665 /* Whether global opd/toc sym has been adjusted or not.
3666 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3667 should be set for all globals defined in any opd/toc section. */
3668 unsigned int adjust_done:1;
3670 /* Set if we twiddled this symbol to weak at some stage. */
3671 unsigned int was_undefined:1;
3673 /* Contexts in which symbol is used in the GOT (or TOC).
3674 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3675 corresponding relocs are encountered during check_relocs.
3676 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3677 indicate the corresponding GOT entry type is not needed.
3678 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3679 a TPREL one. We use a separate flag rather than setting TPREL
3680 just for convenience in distinguishing the two cases. */
3681 #define TLS_GD 1 /* GD reloc. */
3682 #define TLS_LD 2 /* LD reloc. */
3683 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3684 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3685 #define TLS_TLS 16 /* Any TLS reloc. */
3686 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3687 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3688 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3689 unsigned char tls_mask;
3692 /* ppc64 ELF linker hash table. */
3694 struct ppc_link_hash_table
3696 struct elf_link_hash_table elf;
3698 /* The stub hash table. */
3699 struct bfd_hash_table stub_hash_table;
3701 /* Another hash table for plt_branch stubs. */
3702 struct bfd_hash_table branch_hash_table;
3704 /* Hash table for function prologue tocsave. */
3705 htab_t tocsave_htab;
3707 /* Linker stub bfd. */
3710 /* Linker call-backs. */
3711 asection * (*add_stub_section) (const char *, asection *);
3712 void (*layout_sections_again) (void);
3714 /* Array to keep track of which stub sections have been created, and
3715 information on stub grouping. */
3717 /* This is the section to which stubs in the group will be attached. */
3719 /* The stub section. */
3721 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3725 /* Temp used when calculating TOC pointers. */
3728 asection *toc_first_sec;
3730 /* Highest input section id. */
3733 /* Highest output section index. */
3736 /* Used when adding symbols. */
3737 struct ppc_link_hash_entry *dot_syms;
3739 /* List of input sections for each output section. */
3740 asection **input_list;
3742 /* Short-cuts to get to dynamic linker sections. */
3754 asection *glink_eh_frame;
3756 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3757 struct ppc_link_hash_entry *tls_get_addr;
3758 struct ppc_link_hash_entry *tls_get_addr_fd;
3760 /* The size of reliplt used by got entry relocs. */
3761 bfd_size_type got_reli_size;
3764 unsigned long stub_count[ppc_stub_plt_call_r2save];
3766 /* Number of stubs against global syms. */
3767 unsigned long stub_globals;
3769 /* Alignment of PLT call stubs. */
3770 unsigned int plt_stub_align:4;
3772 /* Set if PLT call stubs should load r11. */
3773 unsigned int plt_static_chain:1;
3775 /* Set if PLT call stubs need a read-read barrier. */
3776 unsigned int plt_thread_safe:1;
3778 /* Set if we should emit symbols for stubs. */
3779 unsigned int emit_stub_syms:1;
3781 /* Set if __tls_get_addr optimization should not be done. */
3782 unsigned int no_tls_get_addr_opt:1;
3784 /* Support for multiple toc sections. */
3785 unsigned int do_multi_toc:1;
3786 unsigned int multi_toc_needed:1;
3787 unsigned int second_toc_pass:1;
3788 unsigned int do_toc_opt:1;
3791 unsigned int stub_error:1;
3793 /* Temp used by ppc64_elf_process_dot_syms. */
3794 unsigned int twiddled_syms:1;
3796 /* Incremented every time we size stubs. */
3797 unsigned int stub_iteration;
3799 /* Small local sym cache. */
3800 struct sym_cache sym_cache;
3803 /* Rename some of the generic section flags to better document how they
3806 /* Nonzero if this section has TLS related relocations. */
3807 #define has_tls_reloc sec_flg0
3809 /* Nonzero if this section has a call to __tls_get_addr. */
3810 #define has_tls_get_addr_call sec_flg1
3812 /* Nonzero if this section has any toc or got relocs. */
3813 #define has_toc_reloc sec_flg2
3815 /* Nonzero if this section has a call to another section that uses
3817 #define makes_toc_func_call sec_flg3
3819 /* Recursion protection when determining above flag. */
3820 #define call_check_in_progress sec_flg4
3821 #define call_check_done sec_flg5
3823 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3825 #define ppc_hash_table(p) \
3826 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3827 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3829 #define ppc_stub_hash_lookup(table, string, create, copy) \
3830 ((struct ppc_stub_hash_entry *) \
3831 bfd_hash_lookup ((table), (string), (create), (copy)))
3833 #define ppc_branch_hash_lookup(table, string, create, copy) \
3834 ((struct ppc_branch_hash_entry *) \
3835 bfd_hash_lookup ((table), (string), (create), (copy)))
3837 /* Create an entry in the stub hash table. */
3839 static struct bfd_hash_entry *
3840 stub_hash_newfunc (struct bfd_hash_entry *entry,
3841 struct bfd_hash_table *table,
3844 /* Allocate the structure if it has not already been allocated by a
3848 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3853 /* Call the allocation method of the superclass. */
3854 entry = bfd_hash_newfunc (entry, table, string);
3857 struct ppc_stub_hash_entry *eh;
3859 /* Initialize the local fields. */
3860 eh = (struct ppc_stub_hash_entry *) entry;
3861 eh->stub_type = ppc_stub_none;
3862 eh->stub_sec = NULL;
3863 eh->stub_offset = 0;
3864 eh->target_value = 0;
3865 eh->target_section = NULL;
3873 /* Create an entry in the branch hash table. */
3875 static struct bfd_hash_entry *
3876 branch_hash_newfunc (struct bfd_hash_entry *entry,
3877 struct bfd_hash_table *table,
3880 /* Allocate the structure if it has not already been allocated by a
3884 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3889 /* Call the allocation method of the superclass. */
3890 entry = bfd_hash_newfunc (entry, table, string);
3893 struct ppc_branch_hash_entry *eh;
3895 /* Initialize the local fields. */
3896 eh = (struct ppc_branch_hash_entry *) entry;
3904 /* Create an entry in a ppc64 ELF linker hash table. */
3906 static struct bfd_hash_entry *
3907 link_hash_newfunc (struct bfd_hash_entry *entry,
3908 struct bfd_hash_table *table,
3911 /* Allocate the structure if it has not already been allocated by a
3915 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3920 /* Call the allocation method of the superclass. */
3921 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3924 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3926 memset (&eh->u.stub_cache, 0,
3927 (sizeof (struct ppc_link_hash_entry)
3928 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3930 /* When making function calls, old ABI code references function entry
3931 points (dot symbols), while new ABI code references the function
3932 descriptor symbol. We need to make any combination of reference and
3933 definition work together, without breaking archive linking.
3935 For a defined function "foo" and an undefined call to "bar":
3936 An old object defines "foo" and ".foo", references ".bar" (possibly
3938 A new object defines "foo" and references "bar".
3940 A new object thus has no problem with its undefined symbols being
3941 satisfied by definitions in an old object. On the other hand, the
3942 old object won't have ".bar" satisfied by a new object.
3944 Keep a list of newly added dot-symbols. */
3946 if (string[0] == '.')
3948 struct ppc_link_hash_table *htab;
3950 htab = (struct ppc_link_hash_table *) table;
3951 eh->u.next_dot_sym = htab->dot_syms;
3952 htab->dot_syms = eh;
3959 struct tocsave_entry {
3965 tocsave_htab_hash (const void *p)
3967 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
3968 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
3972 tocsave_htab_eq (const void *p1, const void *p2)
3974 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
3975 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
3976 return e1->sec == e2->sec && e1->offset == e2->offset;
3979 /* Create a ppc64 ELF linker hash table. */
3981 static struct bfd_link_hash_table *
3982 ppc64_elf_link_hash_table_create (bfd *abfd)
3984 struct ppc_link_hash_table *htab;
3985 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3987 htab = bfd_zmalloc (amt);
3991 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3992 sizeof (struct ppc_link_hash_entry),
3999 /* Init the stub hash table too. */
4000 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4001 sizeof (struct ppc_stub_hash_entry)))
4004 /* And the branch hash table. */
4005 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4006 sizeof (struct ppc_branch_hash_entry)))
4009 htab->tocsave_htab = htab_try_create (1024,
4013 if (htab->tocsave_htab == NULL)
4016 /* Initializing two fields of the union is just cosmetic. We really
4017 only care about glist, but when compiled on a 32-bit host the
4018 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4019 debugger inspection of these fields look nicer. */
4020 htab->elf.init_got_refcount.refcount = 0;
4021 htab->elf.init_got_refcount.glist = NULL;
4022 htab->elf.init_plt_refcount.refcount = 0;
4023 htab->elf.init_plt_refcount.glist = NULL;
4024 htab->elf.init_got_offset.offset = 0;
4025 htab->elf.init_got_offset.glist = NULL;
4026 htab->elf.init_plt_offset.offset = 0;
4027 htab->elf.init_plt_offset.glist = NULL;
4029 return &htab->elf.root;
4032 /* Free the derived linker hash table. */
4035 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4037 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4039 bfd_hash_table_free (&htab->stub_hash_table);
4040 bfd_hash_table_free (&htab->branch_hash_table);
4041 if (htab->tocsave_htab)
4042 htab_delete (htab->tocsave_htab);
4043 _bfd_generic_link_hash_table_free (hash);
4046 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4049 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4051 struct ppc_link_hash_table *htab;
4053 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4055 /* Always hook our dynamic sections into the first bfd, which is the
4056 linker created stub bfd. This ensures that the GOT header is at
4057 the start of the output TOC section. */
4058 htab = ppc_hash_table (info);
4061 htab->stub_bfd = abfd;
4062 htab->elf.dynobj = abfd;
4065 /* Build a name for an entry in the stub hash table. */
4068 ppc_stub_name (const asection *input_section,
4069 const asection *sym_sec,
4070 const struct ppc_link_hash_entry *h,
4071 const Elf_Internal_Rela *rel)
4076 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4077 offsets from a sym as a branch target? In fact, we could
4078 probably assume the addend is always zero. */
4079 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4083 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4084 stub_name = bfd_malloc (len);
4085 if (stub_name == NULL)
4088 sprintf (stub_name, "%08x.%s+%x",
4089 input_section->id & 0xffffffff,
4090 h->elf.root.root.string,
4091 (int) rel->r_addend & 0xffffffff);
4095 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4096 stub_name = bfd_malloc (len);
4097 if (stub_name == NULL)
4100 sprintf (stub_name, "%08x.%x:%x+%x",
4101 input_section->id & 0xffffffff,
4102 sym_sec->id & 0xffffffff,
4103 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4104 (int) rel->r_addend & 0xffffffff);
4106 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4107 stub_name[len - 2] = 0;
4111 /* Look up an entry in the stub hash. Stub entries are cached because
4112 creating the stub name takes a bit of time. */
4114 static struct ppc_stub_hash_entry *
4115 ppc_get_stub_entry (const asection *input_section,
4116 const asection *sym_sec,
4117 struct ppc_link_hash_entry *h,
4118 const Elf_Internal_Rela *rel,
4119 struct ppc_link_hash_table *htab)
4121 struct ppc_stub_hash_entry *stub_entry;
4122 const asection *id_sec;
4124 /* If this input section is part of a group of sections sharing one
4125 stub section, then use the id of the first section in the group.
4126 Stub names need to include a section id, as there may well be
4127 more than one stub used to reach say, printf, and we need to
4128 distinguish between them. */
4129 id_sec = htab->stub_group[input_section->id].link_sec;
4131 if (h != NULL && h->u.stub_cache != NULL
4132 && h->u.stub_cache->h == h
4133 && h->u.stub_cache->id_sec == id_sec)
4135 stub_entry = h->u.stub_cache;
4141 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4142 if (stub_name == NULL)
4145 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4146 stub_name, FALSE, FALSE);
4148 h->u.stub_cache = stub_entry;
4156 /* Add a new stub entry to the stub hash. Not all fields of the new
4157 stub entry are initialised. */
4159 static struct ppc_stub_hash_entry *
4160 ppc_add_stub (const char *stub_name,
4162 struct bfd_link_info *info)
4164 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4167 struct ppc_stub_hash_entry *stub_entry;
4169 link_sec = htab->stub_group[section->id].link_sec;
4170 stub_sec = htab->stub_group[section->id].stub_sec;
4171 if (stub_sec == NULL)
4173 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4174 if (stub_sec == NULL)
4180 namelen = strlen (link_sec->name);
4181 len = namelen + sizeof (STUB_SUFFIX);
4182 s_name = bfd_alloc (htab->stub_bfd, len);
4186 memcpy (s_name, link_sec->name, namelen);
4187 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4188 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4189 if (stub_sec == NULL)
4191 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4193 htab->stub_group[section->id].stub_sec = stub_sec;
4196 /* Enter this entry into the linker stub hash table. */
4197 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4199 if (stub_entry == NULL)
4201 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4202 section->owner, stub_name);
4206 stub_entry->stub_sec = stub_sec;
4207 stub_entry->stub_offset = 0;
4208 stub_entry->id_sec = link_sec;
4212 /* Create sections for linker generated code. */
4215 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4217 struct ppc_link_hash_table *htab;
4220 htab = ppc_hash_table (info);
4224 /* Create .sfpr for code to save and restore fp regs. */
4225 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4226 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4227 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4229 if (htab->sfpr == NULL
4230 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4233 /* Create .glink for lazy dynamic linking support. */
4234 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4236 if (htab->glink == NULL
4237 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4240 if (!info->no_ld_generated_unwind_info)
4242 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4243 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4244 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4247 if (htab->glink_eh_frame == NULL
4248 || !bfd_set_section_alignment (abfd, htab->glink_eh_frame, 2))
4252 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4253 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4254 if (htab->iplt == NULL
4255 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4263 if (htab->reliplt == NULL
4264 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4267 /* Create branch lookup table for plt_branch stubs. */
4268 flags = (SEC_ALLOC | SEC_LOAD
4269 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4270 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4272 if (htab->brlt == NULL
4273 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4279 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4280 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4281 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4284 if (htab->relbrlt == NULL
4285 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4291 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4292 not already done. */
4295 create_got_section (bfd *abfd, struct bfd_link_info *info)
4297 asection *got, *relgot;
4299 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4301 if (!is_ppc64_elf (abfd))
4308 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4311 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4316 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4317 | SEC_LINKER_CREATED);
4319 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4321 || !bfd_set_section_alignment (abfd, got, 3))
4324 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4325 flags | SEC_READONLY);
4327 || ! bfd_set_section_alignment (abfd, relgot, 3))
4330 ppc64_elf_tdata (abfd)->got = got;
4331 ppc64_elf_tdata (abfd)->relgot = relgot;
4335 /* Create the dynamic sections, and set up shortcuts. */
4338 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4340 struct ppc_link_hash_table *htab;
4342 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4345 htab = ppc_hash_table (info);
4350 htab->got = bfd_get_section_by_name (dynobj, ".got");
4351 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4352 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4353 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
4355 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
4357 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4358 || (!info->shared && !htab->relbss))
4364 /* Follow indirect and warning symbol links. */
4366 static inline struct bfd_link_hash_entry *
4367 follow_link (struct bfd_link_hash_entry *h)
4369 while (h->type == bfd_link_hash_indirect
4370 || h->type == bfd_link_hash_warning)
4375 static inline struct elf_link_hash_entry *
4376 elf_follow_link (struct elf_link_hash_entry *h)
4378 return (struct elf_link_hash_entry *) follow_link (&h->root);
4381 static inline struct ppc_link_hash_entry *
4382 ppc_follow_link (struct ppc_link_hash_entry *h)
4384 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4387 /* Merge PLT info on FROM with that on TO. */
4390 move_plt_plist (struct ppc_link_hash_entry *from,
4391 struct ppc_link_hash_entry *to)
4393 if (from->elf.plt.plist != NULL)
4395 if (to->elf.plt.plist != NULL)
4397 struct plt_entry **entp;
4398 struct plt_entry *ent;
4400 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4402 struct plt_entry *dent;
4404 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4405 if (dent->addend == ent->addend)
4407 dent->plt.refcount += ent->plt.refcount;
4414 *entp = to->elf.plt.plist;
4417 to->elf.plt.plist = from->elf.plt.plist;
4418 from->elf.plt.plist = NULL;
4422 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4425 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4426 struct elf_link_hash_entry *dir,
4427 struct elf_link_hash_entry *ind)
4429 struct ppc_link_hash_entry *edir, *eind;
4431 edir = (struct ppc_link_hash_entry *) dir;
4432 eind = (struct ppc_link_hash_entry *) ind;
4434 edir->is_func |= eind->is_func;
4435 edir->is_func_descriptor |= eind->is_func_descriptor;
4436 edir->tls_mask |= eind->tls_mask;
4437 if (eind->oh != NULL)
4438 edir->oh = ppc_follow_link (eind->oh);
4440 /* If called to transfer flags for a weakdef during processing
4441 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4442 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4443 if (!(ELIMINATE_COPY_RELOCS
4444 && eind->elf.root.type != bfd_link_hash_indirect
4445 && edir->elf.dynamic_adjusted))
4446 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4448 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4449 edir->elf.ref_regular |= eind->elf.ref_regular;
4450 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4451 edir->elf.needs_plt |= eind->elf.needs_plt;
4453 /* Copy over any dynamic relocs we may have on the indirect sym. */
4454 if (eind->dyn_relocs != NULL)
4456 if (edir->dyn_relocs != NULL)
4458 struct elf_dyn_relocs **pp;
4459 struct elf_dyn_relocs *p;
4461 /* Add reloc counts against the indirect sym to the direct sym
4462 list. Merge any entries against the same section. */
4463 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4465 struct elf_dyn_relocs *q;
4467 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4468 if (q->sec == p->sec)
4470 q->pc_count += p->pc_count;
4471 q->count += p->count;
4478 *pp = edir->dyn_relocs;
4481 edir->dyn_relocs = eind->dyn_relocs;
4482 eind->dyn_relocs = NULL;
4485 /* If we were called to copy over info for a weak sym, that's all.
4486 You might think dyn_relocs need not be copied over; After all,
4487 both syms will be dynamic or both non-dynamic so we're just
4488 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4489 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4490 dyn_relocs in read-only sections, and it does so on what is the
4492 if (eind->elf.root.type != bfd_link_hash_indirect)
4495 /* Copy over got entries that we may have already seen to the
4496 symbol which just became indirect. */
4497 if (eind->elf.got.glist != NULL)
4499 if (edir->elf.got.glist != NULL)
4501 struct got_entry **entp;
4502 struct got_entry *ent;
4504 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4506 struct got_entry *dent;
4508 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4509 if (dent->addend == ent->addend
4510 && dent->owner == ent->owner
4511 && dent->tls_type == ent->tls_type)
4513 dent->got.refcount += ent->got.refcount;
4520 *entp = edir->elf.got.glist;
4523 edir->elf.got.glist = eind->elf.got.glist;
4524 eind->elf.got.glist = NULL;
4527 /* And plt entries. */
4528 move_plt_plist (eind, edir);
4530 if (eind->elf.dynindx != -1)
4532 if (edir->elf.dynindx != -1)
4533 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4534 edir->elf.dynstr_index);
4535 edir->elf.dynindx = eind->elf.dynindx;
4536 edir->elf.dynstr_index = eind->elf.dynstr_index;
4537 eind->elf.dynindx = -1;
4538 eind->elf.dynstr_index = 0;
4542 /* Find the function descriptor hash entry from the given function code
4543 hash entry FH. Link the entries via their OH fields. */
4545 static struct ppc_link_hash_entry *
4546 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4548 struct ppc_link_hash_entry *fdh = fh->oh;
4552 const char *fd_name = fh->elf.root.root.string + 1;
4554 fdh = (struct ppc_link_hash_entry *)
4555 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4559 fdh->is_func_descriptor = 1;
4565 return ppc_follow_link (fdh);
4568 /* Make a fake function descriptor sym for the code sym FH. */
4570 static struct ppc_link_hash_entry *
4571 make_fdh (struct bfd_link_info *info,
4572 struct ppc_link_hash_entry *fh)
4576 struct bfd_link_hash_entry *bh;
4577 struct ppc_link_hash_entry *fdh;
4579 abfd = fh->elf.root.u.undef.abfd;
4580 newsym = bfd_make_empty_symbol (abfd);
4581 newsym->name = fh->elf.root.root.string + 1;
4582 newsym->section = bfd_und_section_ptr;
4584 newsym->flags = BSF_WEAK;
4587 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4588 newsym->flags, newsym->section,
4589 newsym->value, NULL, FALSE, FALSE,
4593 fdh = (struct ppc_link_hash_entry *) bh;
4594 fdh->elf.non_elf = 0;
4596 fdh->is_func_descriptor = 1;
4603 /* Fix function descriptor symbols defined in .opd sections to be
4607 ppc64_elf_add_symbol_hook (bfd *ibfd,
4608 struct bfd_link_info *info,
4609 Elf_Internal_Sym *isym,
4610 const char **name ATTRIBUTE_UNUSED,
4611 flagword *flags ATTRIBUTE_UNUSED,
4613 bfd_vma *value ATTRIBUTE_UNUSED)
4615 if ((ibfd->flags & DYNAMIC) == 0
4616 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4617 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4619 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4621 if ((ibfd->flags & DYNAMIC) == 0)
4622 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4624 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4626 else if (*sec != NULL
4627 && strcmp ((*sec)->name, ".opd") == 0)
4628 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4633 /* This function makes an old ABI object reference to ".bar" cause the
4634 inclusion of a new ABI object archive that defines "bar".
4635 NAME is a symbol defined in an archive. Return a symbol in the hash
4636 table that might be satisfied by the archive symbols. */
4638 static struct elf_link_hash_entry *
4639 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4640 struct bfd_link_info *info,
4643 struct elf_link_hash_entry *h;
4647 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4649 /* Don't return this sym if it is a fake function descriptor
4650 created by add_symbol_adjust. */
4651 && !(h->root.type == bfd_link_hash_undefweak
4652 && ((struct ppc_link_hash_entry *) h)->fake))
4658 len = strlen (name);
4659 dot_name = bfd_alloc (abfd, len + 2);
4660 if (dot_name == NULL)
4661 return (struct elf_link_hash_entry *) 0 - 1;
4663 memcpy (dot_name + 1, name, len + 1);
4664 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4665 bfd_release (abfd, dot_name);
4669 /* This function satisfies all old ABI object references to ".bar" if a
4670 new ABI object defines "bar". Well, at least, undefined dot symbols
4671 are made weak. This stops later archive searches from including an
4672 object if we already have a function descriptor definition. It also
4673 prevents the linker complaining about undefined symbols.
4674 We also check and correct mismatched symbol visibility here. The
4675 most restrictive visibility of the function descriptor and the
4676 function entry symbol is used. */
4679 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4681 struct ppc_link_hash_table *htab;
4682 struct ppc_link_hash_entry *fdh;
4684 if (eh->elf.root.type == bfd_link_hash_indirect)
4687 if (eh->elf.root.type == bfd_link_hash_warning)
4688 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4690 if (eh->elf.root.root.string[0] != '.')
4693 htab = ppc_hash_table (info);
4697 fdh = lookup_fdh (eh, htab);
4700 if (!info->relocatable
4701 && (eh->elf.root.type == bfd_link_hash_undefined
4702 || eh->elf.root.type == bfd_link_hash_undefweak)
4703 && eh->elf.ref_regular)
4705 /* Make an undefweak function descriptor sym, which is enough to
4706 pull in an --as-needed shared lib, but won't cause link
4707 errors. Archives are handled elsewhere. */
4708 fdh = make_fdh (info, eh);
4711 fdh->elf.ref_regular = 1;
4716 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4717 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4718 if (entry_vis < descr_vis)
4719 fdh->elf.other += entry_vis - descr_vis;
4720 else if (entry_vis > descr_vis)
4721 eh->elf.other += descr_vis - entry_vis;
4723 if ((fdh->elf.root.type == bfd_link_hash_defined
4724 || fdh->elf.root.type == bfd_link_hash_defweak)
4725 && eh->elf.root.type == bfd_link_hash_undefined)
4727 eh->elf.root.type = bfd_link_hash_undefweak;
4728 eh->was_undefined = 1;
4729 htab->twiddled_syms = 1;
4736 /* Process list of dot-symbols we made in link_hash_newfunc. */
4739 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4741 struct ppc_link_hash_table *htab;
4742 struct ppc_link_hash_entry **p, *eh;
4744 if (!is_ppc64_elf (info->output_bfd))
4746 htab = ppc_hash_table (info);
4750 if (is_ppc64_elf (ibfd))
4752 p = &htab->dot_syms;
4753 while ((eh = *p) != NULL)
4756 if (!add_symbol_adjust (eh, info))
4758 p = &eh->u.next_dot_sym;
4762 /* Clear the list for non-ppc64 input files. */
4763 p = &htab->dot_syms;
4764 while ((eh = *p) != NULL)
4767 p = &eh->u.next_dot_sym;
4770 /* We need to fix the undefs list for any syms we have twiddled to
4772 if (htab->twiddled_syms)
4774 bfd_link_repair_undef_list (&htab->elf.root);
4775 htab->twiddled_syms = 0;
4780 /* Undo hash table changes when an --as-needed input file is determined
4781 not to be needed. */
4784 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4785 struct bfd_link_info *info)
4787 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4792 htab->dot_syms = NULL;
4796 /* If --just-symbols against a final linked binary, then assume we need
4797 toc adjusting stubs when calling functions defined there. */
4800 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4802 if ((sec->flags & SEC_CODE) != 0
4803 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
4804 && is_ppc64_elf (sec->owner))
4806 asection *got = bfd_get_section_by_name (sec->owner, ".got");
4808 && got->size >= elf_backend_got_header_size
4809 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
4810 sec->has_toc_reloc = 1;
4812 _bfd_elf_link_just_syms (sec, info);
4815 static struct plt_entry **
4816 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4817 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4819 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4820 struct plt_entry **local_plt;
4821 unsigned char *local_got_tls_masks;
4823 if (local_got_ents == NULL)
4825 bfd_size_type size = symtab_hdr->sh_info;
4827 size *= (sizeof (*local_got_ents)
4828 + sizeof (*local_plt)
4829 + sizeof (*local_got_tls_masks));
4830 local_got_ents = bfd_zalloc (abfd, size);
4831 if (local_got_ents == NULL)
4833 elf_local_got_ents (abfd) = local_got_ents;
4836 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4838 struct got_entry *ent;
4840 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4841 if (ent->addend == r_addend
4842 && ent->owner == abfd
4843 && ent->tls_type == tls_type)
4847 bfd_size_type amt = sizeof (*ent);
4848 ent = bfd_alloc (abfd, amt);
4851 ent->next = local_got_ents[r_symndx];
4852 ent->addend = r_addend;
4854 ent->tls_type = tls_type;
4855 ent->is_indirect = FALSE;
4856 ent->got.refcount = 0;
4857 local_got_ents[r_symndx] = ent;
4859 ent->got.refcount += 1;
4862 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4863 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
4864 local_got_tls_masks[r_symndx] |= tls_type;
4866 return local_plt + r_symndx;
4870 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4872 struct plt_entry *ent;
4874 for (ent = *plist; ent != NULL; ent = ent->next)
4875 if (ent->addend == addend)
4879 bfd_size_type amt = sizeof (*ent);
4880 ent = bfd_alloc (abfd, amt);
4884 ent->addend = addend;
4885 ent->plt.refcount = 0;
4888 ent->plt.refcount += 1;
4893 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4895 return (r_type == R_PPC64_REL24
4896 || r_type == R_PPC64_REL14
4897 || r_type == R_PPC64_REL14_BRTAKEN
4898 || r_type == R_PPC64_REL14_BRNTAKEN
4899 || r_type == R_PPC64_ADDR24
4900 || r_type == R_PPC64_ADDR14
4901 || r_type == R_PPC64_ADDR14_BRTAKEN
4902 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4905 /* Look through the relocs for a section during the first phase, and
4906 calculate needed space in the global offset table, procedure
4907 linkage table, and dynamic reloc sections. */
4910 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4911 asection *sec, const Elf_Internal_Rela *relocs)
4913 struct ppc_link_hash_table *htab;
4914 Elf_Internal_Shdr *symtab_hdr;
4915 struct elf_link_hash_entry **sym_hashes;
4916 const Elf_Internal_Rela *rel;
4917 const Elf_Internal_Rela *rel_end;
4919 asection **opd_sym_map;
4920 struct elf_link_hash_entry *tga, *dottga;
4922 if (info->relocatable)
4925 /* Don't do anything special with non-loaded, non-alloced sections.
4926 In particular, any relocs in such sections should not affect GOT
4927 and PLT reference counting (ie. we don't allow them to create GOT
4928 or PLT entries), there's no possibility or desire to optimize TLS
4929 relocs, and there's not much point in propagating relocs to shared
4930 libs that the dynamic linker won't relocate. */
4931 if ((sec->flags & SEC_ALLOC) == 0)
4934 BFD_ASSERT (is_ppc64_elf (abfd));
4936 htab = ppc_hash_table (info);
4940 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4941 FALSE, FALSE, TRUE);
4942 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4943 FALSE, FALSE, TRUE);
4944 symtab_hdr = &elf_symtab_hdr (abfd);
4945 sym_hashes = elf_sym_hashes (abfd);
4948 if (strcmp (sec->name, ".opd") == 0)
4950 /* Garbage collection needs some extra help with .opd sections.
4951 We don't want to necessarily keep everything referenced by
4952 relocs in .opd, as that would keep all functions. Instead,
4953 if we reference an .opd symbol (a function descriptor), we
4954 want to keep the function code symbol's section. This is
4955 easy for global symbols, but for local syms we need to keep
4956 information about the associated function section. */
4959 amt = sec->size * sizeof (*opd_sym_map) / 8;
4960 opd_sym_map = bfd_zalloc (abfd, amt);
4961 if (opd_sym_map == NULL)
4963 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4964 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4965 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4968 if (htab->sfpr == NULL
4969 && !create_linkage_sections (htab->elf.dynobj, info))
4972 rel_end = relocs + sec->reloc_count;
4973 for (rel = relocs; rel < rel_end; rel++)
4975 unsigned long r_symndx;
4976 struct elf_link_hash_entry *h;
4977 enum elf_ppc64_reloc_type r_type;
4979 struct _ppc64_elf_section_data *ppc64_sec;
4980 struct plt_entry **ifunc;
4982 r_symndx = ELF64_R_SYM (rel->r_info);
4983 if (r_symndx < symtab_hdr->sh_info)
4987 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4988 h = elf_follow_link (h);
4995 if (h->type == STT_GNU_IFUNC)
4998 ifunc = &h->plt.plist;
5003 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5008 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5010 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5011 rel->r_addend, PLT_IFUNC);
5016 r_type = ELF64_R_TYPE (rel->r_info);
5017 if (is_branch_reloc (r_type))
5019 if (h != NULL && (h == tga || h == dottga))
5022 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5023 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5024 /* We have a new-style __tls_get_addr call with a marker
5028 /* Mark this section as having an old-style call. */
5029 sec->has_tls_get_addr_call = 1;
5032 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5034 && !update_plt_info (abfd, ifunc, rel->r_addend))
5042 /* These special tls relocs tie a call to __tls_get_addr with
5043 its parameter symbol. */
5046 case R_PPC64_GOT_TLSLD16:
5047 case R_PPC64_GOT_TLSLD16_LO:
5048 case R_PPC64_GOT_TLSLD16_HI:
5049 case R_PPC64_GOT_TLSLD16_HA:
5050 tls_type = TLS_TLS | TLS_LD;
5053 case R_PPC64_GOT_TLSGD16:
5054 case R_PPC64_GOT_TLSGD16_LO:
5055 case R_PPC64_GOT_TLSGD16_HI:
5056 case R_PPC64_GOT_TLSGD16_HA:
5057 tls_type = TLS_TLS | TLS_GD;
5060 case R_PPC64_GOT_TPREL16_DS:
5061 case R_PPC64_GOT_TPREL16_LO_DS:
5062 case R_PPC64_GOT_TPREL16_HI:
5063 case R_PPC64_GOT_TPREL16_HA:
5064 if (!info->executable)
5065 info->flags |= DF_STATIC_TLS;
5066 tls_type = TLS_TLS | TLS_TPREL;
5069 case R_PPC64_GOT_DTPREL16_DS:
5070 case R_PPC64_GOT_DTPREL16_LO_DS:
5071 case R_PPC64_GOT_DTPREL16_HI:
5072 case R_PPC64_GOT_DTPREL16_HA:
5073 tls_type = TLS_TLS | TLS_DTPREL;
5075 sec->has_tls_reloc = 1;
5079 case R_PPC64_GOT16_DS:
5080 case R_PPC64_GOT16_HA:
5081 case R_PPC64_GOT16_HI:
5082 case R_PPC64_GOT16_LO:
5083 case R_PPC64_GOT16_LO_DS:
5084 /* This symbol requires a global offset table entry. */
5085 sec->has_toc_reloc = 1;
5086 if (r_type == R_PPC64_GOT_TLSLD16
5087 || r_type == R_PPC64_GOT_TLSGD16
5088 || r_type == R_PPC64_GOT_TPREL16_DS
5089 || r_type == R_PPC64_GOT_DTPREL16_DS
5090 || r_type == R_PPC64_GOT16
5091 || r_type == R_PPC64_GOT16_DS)
5093 htab->do_multi_toc = 1;
5094 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5097 if (ppc64_elf_tdata (abfd)->got == NULL
5098 && !create_got_section (abfd, info))
5103 struct ppc_link_hash_entry *eh;
5104 struct got_entry *ent;
5106 eh = (struct ppc_link_hash_entry *) h;
5107 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5108 if (ent->addend == rel->r_addend
5109 && ent->owner == abfd
5110 && ent->tls_type == tls_type)
5114 bfd_size_type amt = sizeof (*ent);
5115 ent = bfd_alloc (abfd, amt);
5118 ent->next = eh->elf.got.glist;
5119 ent->addend = rel->r_addend;
5121 ent->tls_type = tls_type;
5122 ent->is_indirect = FALSE;
5123 ent->got.refcount = 0;
5124 eh->elf.got.glist = ent;
5126 ent->got.refcount += 1;
5127 eh->tls_mask |= tls_type;
5130 /* This is a global offset table entry for a local symbol. */
5131 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5132 rel->r_addend, tls_type))
5136 case R_PPC64_PLT16_HA:
5137 case R_PPC64_PLT16_HI:
5138 case R_PPC64_PLT16_LO:
5141 /* This symbol requires a procedure linkage table entry. We
5142 actually build the entry in adjust_dynamic_symbol,
5143 because this might be a case of linking PIC code without
5144 linking in any dynamic objects, in which case we don't
5145 need to generate a procedure linkage table after all. */
5148 /* It does not make sense to have a procedure linkage
5149 table entry for a local symbol. */
5150 bfd_set_error (bfd_error_bad_value);
5155 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5158 if (h->root.root.string[0] == '.'
5159 && h->root.root.string[1] != '\0')
5160 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5164 /* The following relocations don't need to propagate the
5165 relocation if linking a shared object since they are
5166 section relative. */
5167 case R_PPC64_SECTOFF:
5168 case R_PPC64_SECTOFF_LO:
5169 case R_PPC64_SECTOFF_HI:
5170 case R_PPC64_SECTOFF_HA:
5171 case R_PPC64_SECTOFF_DS:
5172 case R_PPC64_SECTOFF_LO_DS:
5173 case R_PPC64_DTPREL16:
5174 case R_PPC64_DTPREL16_LO:
5175 case R_PPC64_DTPREL16_HI:
5176 case R_PPC64_DTPREL16_HA:
5177 case R_PPC64_DTPREL16_DS:
5178 case R_PPC64_DTPREL16_LO_DS:
5179 case R_PPC64_DTPREL16_HIGHER:
5180 case R_PPC64_DTPREL16_HIGHERA:
5181 case R_PPC64_DTPREL16_HIGHEST:
5182 case R_PPC64_DTPREL16_HIGHESTA:
5187 case R_PPC64_REL16_LO:
5188 case R_PPC64_REL16_HI:
5189 case R_PPC64_REL16_HA:
5193 case R_PPC64_TOC16_DS:
5194 htab->do_multi_toc = 1;
5195 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5196 case R_PPC64_TOC16_LO:
5197 case R_PPC64_TOC16_HI:
5198 case R_PPC64_TOC16_HA:
5199 case R_PPC64_TOC16_LO_DS:
5200 sec->has_toc_reloc = 1;
5203 /* This relocation describes the C++ object vtable hierarchy.
5204 Reconstruct it for later use during GC. */
5205 case R_PPC64_GNU_VTINHERIT:
5206 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5210 /* This relocation describes which C++ vtable entries are actually
5211 used. Record for later use during GC. */
5212 case R_PPC64_GNU_VTENTRY:
5213 BFD_ASSERT (h != NULL);
5215 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5220 case R_PPC64_REL14_BRTAKEN:
5221 case R_PPC64_REL14_BRNTAKEN:
5223 asection *dest = NULL;
5225 /* Heuristic: If jumping outside our section, chances are
5226 we are going to need a stub. */
5229 /* If the sym is weak it may be overridden later, so
5230 don't assume we know where a weak sym lives. */
5231 if (h->root.type == bfd_link_hash_defined)
5232 dest = h->root.u.def.section;
5236 Elf_Internal_Sym *isym;
5238 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5243 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5247 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5252 if (h != NULL && ifunc == NULL)
5254 /* We may need a .plt entry if the function this reloc
5255 refers to is in a shared lib. */
5256 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5259 if (h->root.root.string[0] == '.'
5260 && h->root.root.string[1] != '\0')
5261 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5262 if (h == tga || h == dottga)
5263 sec->has_tls_reloc = 1;
5267 case R_PPC64_TPREL64:
5268 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5269 if (!info->executable)
5270 info->flags |= DF_STATIC_TLS;
5273 case R_PPC64_DTPMOD64:
5274 if (rel + 1 < rel_end
5275 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5276 && rel[1].r_offset == rel->r_offset + 8)
5277 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5279 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5282 case R_PPC64_DTPREL64:
5283 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5285 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5286 && rel[-1].r_offset == rel->r_offset - 8)
5287 /* This is the second reloc of a dtpmod, dtprel pair.
5288 Don't mark with TLS_DTPREL. */
5292 sec->has_tls_reloc = 1;
5295 struct ppc_link_hash_entry *eh;
5296 eh = (struct ppc_link_hash_entry *) h;
5297 eh->tls_mask |= tls_type;
5300 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5301 rel->r_addend, tls_type))
5304 ppc64_sec = ppc64_elf_section_data (sec);
5305 if (ppc64_sec->sec_type != sec_toc)
5309 /* One extra to simplify get_tls_mask. */
5310 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5311 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5312 if (ppc64_sec->u.toc.symndx == NULL)
5314 amt = sec->size * sizeof (bfd_vma) / 8;
5315 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5316 if (ppc64_sec->u.toc.add == NULL)
5318 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5319 ppc64_sec->sec_type = sec_toc;
5321 BFD_ASSERT (rel->r_offset % 8 == 0);
5322 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5323 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5325 /* Mark the second slot of a GD or LD entry.
5326 -1 to indicate GD and -2 to indicate LD. */
5327 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5328 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5329 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5330 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5333 case R_PPC64_TPREL16:
5334 case R_PPC64_TPREL16_LO:
5335 case R_PPC64_TPREL16_HI:
5336 case R_PPC64_TPREL16_HA:
5337 case R_PPC64_TPREL16_DS:
5338 case R_PPC64_TPREL16_LO_DS:
5339 case R_PPC64_TPREL16_HIGHER:
5340 case R_PPC64_TPREL16_HIGHERA:
5341 case R_PPC64_TPREL16_HIGHEST:
5342 case R_PPC64_TPREL16_HIGHESTA:
5345 if (!info->executable)
5346 info->flags |= DF_STATIC_TLS;
5351 case R_PPC64_ADDR64:
5352 if (opd_sym_map != NULL
5353 && rel + 1 < rel_end
5354 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5358 if (h->root.root.string[0] == '.'
5359 && h->root.root.string[1] != 0
5360 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5363 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5368 Elf_Internal_Sym *isym;
5370 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5375 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5376 if (s != NULL && s != sec)
5377 opd_sym_map[rel->r_offset / 8] = s;
5385 case R_PPC64_ADDR14:
5386 case R_PPC64_ADDR14_BRNTAKEN:
5387 case R_PPC64_ADDR14_BRTAKEN:
5388 case R_PPC64_ADDR16:
5389 case R_PPC64_ADDR16_DS:
5390 case R_PPC64_ADDR16_HA:
5391 case R_PPC64_ADDR16_HI:
5392 case R_PPC64_ADDR16_HIGHER:
5393 case R_PPC64_ADDR16_HIGHERA:
5394 case R_PPC64_ADDR16_HIGHEST:
5395 case R_PPC64_ADDR16_HIGHESTA:
5396 case R_PPC64_ADDR16_LO:
5397 case R_PPC64_ADDR16_LO_DS:
5398 case R_PPC64_ADDR24:
5399 case R_PPC64_ADDR32:
5400 case R_PPC64_UADDR16:
5401 case R_PPC64_UADDR32:
5402 case R_PPC64_UADDR64:
5404 if (h != NULL && !info->shared)
5405 /* We may need a copy reloc. */
5408 /* Don't propagate .opd relocs. */
5409 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5412 /* If we are creating a shared library, and this is a reloc
5413 against a global symbol, or a non PC relative reloc
5414 against a local symbol, then we need to copy the reloc
5415 into the shared library. However, if we are linking with
5416 -Bsymbolic, we do not need to copy a reloc against a
5417 global symbol which is defined in an object we are
5418 including in the link (i.e., DEF_REGULAR is set). At
5419 this point we have not seen all the input files, so it is
5420 possible that DEF_REGULAR is not set now but will be set
5421 later (it is never cleared). In case of a weak definition,
5422 DEF_REGULAR may be cleared later by a strong definition in
5423 a shared library. We account for that possibility below by
5424 storing information in the dyn_relocs field of the hash
5425 table entry. A similar situation occurs when creating
5426 shared libraries and symbol visibility changes render the
5429 If on the other hand, we are creating an executable, we
5430 may need to keep relocations for symbols satisfied by a
5431 dynamic library if we manage to avoid copy relocs for the
5435 && (must_be_dyn_reloc (info, r_type)
5437 && (! info->symbolic
5438 || h->root.type == bfd_link_hash_defweak
5439 || !h->def_regular))))
5440 || (ELIMINATE_COPY_RELOCS
5443 && (h->root.type == bfd_link_hash_defweak
5444 || !h->def_regular))
5448 struct elf_dyn_relocs *p;
5449 struct elf_dyn_relocs **head;
5451 /* We must copy these reloc types into the output file.
5452 Create a reloc section in dynobj and make room for
5456 sreloc = _bfd_elf_make_dynamic_reloc_section
5457 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5463 /* If this is a global symbol, we count the number of
5464 relocations we need for this symbol. */
5467 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5471 /* Track dynamic relocs needed for local syms too.
5472 We really need local syms available to do this
5476 Elf_Internal_Sym *isym;
5478 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5483 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5487 vpp = &elf_section_data (s)->local_dynrel;
5488 head = (struct elf_dyn_relocs **) vpp;
5492 if (p == NULL || p->sec != sec)
5494 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5505 if (!must_be_dyn_reloc (info, r_type))
5518 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5519 of the code entry point, and its section. */
5522 opd_entry_value (asection *opd_sec,
5524 asection **code_sec,
5527 bfd *opd_bfd = opd_sec->owner;
5528 Elf_Internal_Rela *relocs;
5529 Elf_Internal_Rela *lo, *hi, *look;
5532 /* No relocs implies we are linking a --just-symbols object, or looking
5533 at a final linked executable with addr2line or somesuch. */
5534 if (opd_sec->reloc_count == 0)
5538 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5539 return (bfd_vma) -1;
5541 val = bfd_get_64 (opd_bfd, buf);
5542 if (code_sec != NULL)
5544 asection *sec, *likely = NULL;
5545 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5547 && (sec->flags & SEC_LOAD) != 0
5548 && (sec->flags & SEC_ALLOC) != 0)
5553 if (code_off != NULL)
5554 *code_off = val - likely->vma;
5560 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5562 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5564 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5566 /* Go find the opd reloc at the sym address. */
5568 BFD_ASSERT (lo != NULL);
5569 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5573 look = lo + (hi - lo) / 2;
5574 if (look->r_offset < offset)
5576 else if (look->r_offset > offset)
5580 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5582 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5583 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5585 unsigned long symndx = ELF64_R_SYM (look->r_info);
5588 if (symndx < symtab_hdr->sh_info
5589 || elf_sym_hashes (opd_bfd) == NULL)
5591 Elf_Internal_Sym *sym;
5593 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5596 size_t symcnt = symtab_hdr->sh_info;
5597 if (elf_sym_hashes (opd_bfd) == NULL)
5598 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5599 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5600 0, NULL, NULL, NULL);
5603 symtab_hdr->contents = (bfd_byte *) sym;
5607 val = sym->st_value;
5608 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5609 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5613 struct elf_link_hash_entry **sym_hashes;
5614 struct elf_link_hash_entry *rh;
5616 sym_hashes = elf_sym_hashes (opd_bfd);
5617 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5618 rh = elf_follow_link (rh);
5619 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5620 || rh->root.type == bfd_link_hash_defweak);
5621 val = rh->root.u.def.value;
5622 sec = rh->root.u.def.section;
5624 val += look->r_addend;
5625 if (code_off != NULL)
5627 if (code_sec != NULL)
5629 if (sec != NULL && sec->output_section != NULL)
5630 val += sec->output_section->vma + sec->output_offset;
5639 /* Return TRUE iff the ELF symbol SYM might be a function. Set *CODE_SEC
5640 and *CODE_OFF to the function's entry point. */
5643 ppc64_elf_maybe_function_sym (const asymbol *sym,
5644 asection **code_sec, bfd_vma *code_off)
5646 if (_bfd_elf_maybe_function_sym (sym, code_sec, code_off))
5648 if (strcmp (sym->section->name, ".opd") == 0)
5649 opd_entry_value (sym->section, sym->value, code_sec, code_off);
5655 /* Return true if symbol is defined in a regular object file. */
5658 is_static_defined (struct elf_link_hash_entry *h)
5660 return ((h->root.type == bfd_link_hash_defined
5661 || h->root.type == bfd_link_hash_defweak)
5662 && h->root.u.def.section != NULL
5663 && h->root.u.def.section->output_section != NULL);
5666 /* If FDH is a function descriptor symbol, return the associated code
5667 entry symbol if it is defined. Return NULL otherwise. */
5669 static struct ppc_link_hash_entry *
5670 defined_code_entry (struct ppc_link_hash_entry *fdh)
5672 if (fdh->is_func_descriptor)
5674 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5675 if (fh->elf.root.type == bfd_link_hash_defined
5676 || fh->elf.root.type == bfd_link_hash_defweak)
5682 /* If FH is a function code entry symbol, return the associated
5683 function descriptor symbol if it is defined. Return NULL otherwise. */
5685 static struct ppc_link_hash_entry *
5686 defined_func_desc (struct ppc_link_hash_entry *fh)
5689 && fh->oh->is_func_descriptor)
5691 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5692 if (fdh->elf.root.type == bfd_link_hash_defined
5693 || fdh->elf.root.type == bfd_link_hash_defweak)
5699 /* Mark all our entry sym sections, both opd and code section. */
5702 ppc64_elf_gc_keep (struct bfd_link_info *info)
5704 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5705 struct bfd_sym_chain *sym;
5710 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5712 struct ppc_link_hash_entry *eh, *fh;
5715 eh = (struct ppc_link_hash_entry *)
5716 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5719 if (eh->elf.root.type != bfd_link_hash_defined
5720 && eh->elf.root.type != bfd_link_hash_defweak)
5723 fh = defined_code_entry (eh);
5726 sec = fh->elf.root.u.def.section;
5727 sec->flags |= SEC_KEEP;
5729 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5730 && opd_entry_value (eh->elf.root.u.def.section,
5731 eh->elf.root.u.def.value,
5732 &sec, NULL) != (bfd_vma) -1)
5733 sec->flags |= SEC_KEEP;
5735 sec = eh->elf.root.u.def.section;
5736 sec->flags |= SEC_KEEP;
5740 /* Mark sections containing dynamically referenced symbols. When
5741 building shared libraries, we must assume that any visible symbol is
5745 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5747 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5748 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5749 struct ppc_link_hash_entry *fdh;
5751 /* Dynamic linking info is on the func descriptor sym. */
5752 fdh = defined_func_desc (eh);
5756 if ((eh->elf.root.type == bfd_link_hash_defined
5757 || eh->elf.root.type == bfd_link_hash_defweak)
5758 && (eh->elf.ref_dynamic
5759 || (!info->executable
5760 && eh->elf.def_regular
5761 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5762 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
5763 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
5764 || !bfd_hide_sym_by_version (info->version_info,
5765 eh->elf.root.root.string)))))
5768 struct ppc_link_hash_entry *fh;
5770 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5772 /* Function descriptor syms cause the associated
5773 function code sym section to be marked. */
5774 fh = defined_code_entry (eh);
5777 code_sec = fh->elf.root.u.def.section;
5778 code_sec->flags |= SEC_KEEP;
5780 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5781 && opd_entry_value (eh->elf.root.u.def.section,
5782 eh->elf.root.u.def.value,
5783 &code_sec, NULL) != (bfd_vma) -1)
5784 code_sec->flags |= SEC_KEEP;
5790 /* Return the section that should be marked against GC for a given
5794 ppc64_elf_gc_mark_hook (asection *sec,
5795 struct bfd_link_info *info,
5796 Elf_Internal_Rela *rel,
5797 struct elf_link_hash_entry *h,
5798 Elf_Internal_Sym *sym)
5802 /* Syms return NULL if we're marking .opd, so we avoid marking all
5803 function sections, as all functions are referenced in .opd. */
5805 if (get_opd_info (sec) != NULL)
5810 enum elf_ppc64_reloc_type r_type;
5811 struct ppc_link_hash_entry *eh, *fh, *fdh;
5813 r_type = ELF64_R_TYPE (rel->r_info);
5816 case R_PPC64_GNU_VTINHERIT:
5817 case R_PPC64_GNU_VTENTRY:
5821 switch (h->root.type)
5823 case bfd_link_hash_defined:
5824 case bfd_link_hash_defweak:
5825 eh = (struct ppc_link_hash_entry *) h;
5826 fdh = defined_func_desc (eh);
5830 /* Function descriptor syms cause the associated
5831 function code sym section to be marked. */
5832 fh = defined_code_entry (eh);
5835 /* They also mark their opd section. */
5836 eh->elf.root.u.def.section->gc_mark = 1;
5838 rsec = fh->elf.root.u.def.section;
5840 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5841 && opd_entry_value (eh->elf.root.u.def.section,
5842 eh->elf.root.u.def.value,
5843 &rsec, NULL) != (bfd_vma) -1)
5844 eh->elf.root.u.def.section->gc_mark = 1;
5846 rsec = h->root.u.def.section;
5849 case bfd_link_hash_common:
5850 rsec = h->root.u.c.p->section;
5854 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5860 struct _opd_sec_data *opd;
5862 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5863 opd = get_opd_info (rsec);
5864 if (opd != NULL && opd->func_sec != NULL)
5868 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5875 /* Update the .got, .plt. and dynamic reloc reference counts for the
5876 section being removed. */
5879 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5880 asection *sec, const Elf_Internal_Rela *relocs)
5882 struct ppc_link_hash_table *htab;
5883 Elf_Internal_Shdr *symtab_hdr;
5884 struct elf_link_hash_entry **sym_hashes;
5885 struct got_entry **local_got_ents;
5886 const Elf_Internal_Rela *rel, *relend;
5888 if (info->relocatable)
5891 if ((sec->flags & SEC_ALLOC) == 0)
5894 elf_section_data (sec)->local_dynrel = NULL;
5896 htab = ppc_hash_table (info);
5900 symtab_hdr = &elf_symtab_hdr (abfd);
5901 sym_hashes = elf_sym_hashes (abfd);
5902 local_got_ents = elf_local_got_ents (abfd);
5904 relend = relocs + sec->reloc_count;
5905 for (rel = relocs; rel < relend; rel++)
5907 unsigned long r_symndx;
5908 enum elf_ppc64_reloc_type r_type;
5909 struct elf_link_hash_entry *h = NULL;
5910 unsigned char tls_type = 0;
5912 r_symndx = ELF64_R_SYM (rel->r_info);
5913 r_type = ELF64_R_TYPE (rel->r_info);
5914 if (r_symndx >= symtab_hdr->sh_info)
5916 struct ppc_link_hash_entry *eh;
5917 struct elf_dyn_relocs **pp;
5918 struct elf_dyn_relocs *p;
5920 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5921 h = elf_follow_link (h);
5922 eh = (struct ppc_link_hash_entry *) h;
5924 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5927 /* Everything must go for SEC. */
5933 if (is_branch_reloc (r_type))
5935 struct plt_entry **ifunc = NULL;
5938 if (h->type == STT_GNU_IFUNC)
5939 ifunc = &h->plt.plist;
5941 else if (local_got_ents != NULL)
5943 struct plt_entry **local_plt = (struct plt_entry **)
5944 (local_got_ents + symtab_hdr->sh_info);
5945 unsigned char *local_got_tls_masks = (unsigned char *)
5946 (local_plt + symtab_hdr->sh_info);
5947 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5948 ifunc = local_plt + r_symndx;
5952 struct plt_entry *ent;
5954 for (ent = *ifunc; ent != NULL; ent = ent->next)
5955 if (ent->addend == rel->r_addend)
5959 if (ent->plt.refcount > 0)
5960 ent->plt.refcount -= 1;
5967 case R_PPC64_GOT_TLSLD16:
5968 case R_PPC64_GOT_TLSLD16_LO:
5969 case R_PPC64_GOT_TLSLD16_HI:
5970 case R_PPC64_GOT_TLSLD16_HA:
5971 tls_type = TLS_TLS | TLS_LD;
5974 case R_PPC64_GOT_TLSGD16:
5975 case R_PPC64_GOT_TLSGD16_LO:
5976 case R_PPC64_GOT_TLSGD16_HI:
5977 case R_PPC64_GOT_TLSGD16_HA:
5978 tls_type = TLS_TLS | TLS_GD;
5981 case R_PPC64_GOT_TPREL16_DS:
5982 case R_PPC64_GOT_TPREL16_LO_DS:
5983 case R_PPC64_GOT_TPREL16_HI:
5984 case R_PPC64_GOT_TPREL16_HA:
5985 tls_type = TLS_TLS | TLS_TPREL;
5988 case R_PPC64_GOT_DTPREL16_DS:
5989 case R_PPC64_GOT_DTPREL16_LO_DS:
5990 case R_PPC64_GOT_DTPREL16_HI:
5991 case R_PPC64_GOT_DTPREL16_HA:
5992 tls_type = TLS_TLS | TLS_DTPREL;
5996 case R_PPC64_GOT16_DS:
5997 case R_PPC64_GOT16_HA:
5998 case R_PPC64_GOT16_HI:
5999 case R_PPC64_GOT16_LO:
6000 case R_PPC64_GOT16_LO_DS:
6003 struct got_entry *ent;
6008 ent = local_got_ents[r_symndx];
6010 for (; ent != NULL; ent = ent->next)
6011 if (ent->addend == rel->r_addend
6012 && ent->owner == abfd
6013 && ent->tls_type == tls_type)
6017 if (ent->got.refcount > 0)
6018 ent->got.refcount -= 1;
6022 case R_PPC64_PLT16_HA:
6023 case R_PPC64_PLT16_HI:
6024 case R_PPC64_PLT16_LO:
6028 case R_PPC64_REL14_BRNTAKEN:
6029 case R_PPC64_REL14_BRTAKEN:
6033 struct plt_entry *ent;
6035 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6036 if (ent->addend == rel->r_addend)
6038 if (ent != NULL && ent->plt.refcount > 0)
6039 ent->plt.refcount -= 1;
6050 /* The maximum size of .sfpr. */
6051 #define SFPR_MAX (218*4)
6053 struct sfpr_def_parms
6055 const char name[12];
6056 unsigned char lo, hi;
6057 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6058 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6061 /* Auto-generate _save*, _rest* functions in .sfpr. */
6064 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6066 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6068 size_t len = strlen (parm->name);
6069 bfd_boolean writing = FALSE;
6075 memcpy (sym, parm->name, len);
6078 for (i = parm->lo; i <= parm->hi; i++)
6080 struct elf_link_hash_entry *h;
6082 sym[len + 0] = i / 10 + '0';
6083 sym[len + 1] = i % 10 + '0';
6084 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6088 h->root.type = bfd_link_hash_defined;
6089 h->root.u.def.section = htab->sfpr;
6090 h->root.u.def.value = htab->sfpr->size;
6093 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6095 if (htab->sfpr->contents == NULL)
6097 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6098 if (htab->sfpr->contents == NULL)
6104 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6106 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6108 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6109 htab->sfpr->size = p - htab->sfpr->contents;
6117 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6119 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6124 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6126 p = savegpr0 (abfd, p, r);
6127 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6129 bfd_put_32 (abfd, BLR, p);
6134 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6136 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6141 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6143 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6145 p = restgpr0 (abfd, p, r);
6146 bfd_put_32 (abfd, MTLR_R0, p);
6150 p = restgpr0 (abfd, p, 30);
6151 p = restgpr0 (abfd, p, 31);
6153 bfd_put_32 (abfd, BLR, p);
6158 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6160 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6165 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6167 p = savegpr1 (abfd, p, r);
6168 bfd_put_32 (abfd, BLR, p);
6173 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6175 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6180 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6182 p = restgpr1 (abfd, p, r);
6183 bfd_put_32 (abfd, BLR, p);
6188 savefpr (bfd *abfd, bfd_byte *p, int r)
6190 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6195 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6197 p = savefpr (abfd, p, r);
6198 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6200 bfd_put_32 (abfd, BLR, p);
6205 restfpr (bfd *abfd, bfd_byte *p, int r)
6207 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6212 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6214 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6216 p = restfpr (abfd, p, r);
6217 bfd_put_32 (abfd, MTLR_R0, p);
6221 p = restfpr (abfd, p, 30);
6222 p = restfpr (abfd, p, 31);
6224 bfd_put_32 (abfd, BLR, p);
6229 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6231 p = savefpr (abfd, p, r);
6232 bfd_put_32 (abfd, BLR, p);
6237 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6239 p = restfpr (abfd, p, r);
6240 bfd_put_32 (abfd, BLR, p);
6245 savevr (bfd *abfd, bfd_byte *p, int r)
6247 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6249 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6254 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6256 p = savevr (abfd, p, r);
6257 bfd_put_32 (abfd, BLR, p);
6262 restvr (bfd *abfd, bfd_byte *p, int r)
6264 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6266 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6271 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6273 p = restvr (abfd, p, r);
6274 bfd_put_32 (abfd, BLR, p);
6278 /* Called via elf_link_hash_traverse to transfer dynamic linking
6279 information on function code symbol entries to their corresponding
6280 function descriptor symbol entries. */
6283 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6285 struct bfd_link_info *info;
6286 struct ppc_link_hash_table *htab;
6287 struct plt_entry *ent;
6288 struct ppc_link_hash_entry *fh;
6289 struct ppc_link_hash_entry *fdh;
6290 bfd_boolean force_local;
6292 fh = (struct ppc_link_hash_entry *) h;
6293 if (fh->elf.root.type == bfd_link_hash_indirect)
6297 htab = ppc_hash_table (info);
6301 /* Resolve undefined references to dot-symbols as the value
6302 in the function descriptor, if we have one in a regular object.
6303 This is to satisfy cases like ".quad .foo". Calls to functions
6304 in dynamic objects are handled elsewhere. */
6305 if (fh->elf.root.type == bfd_link_hash_undefweak
6306 && fh->was_undefined
6307 && (fdh = defined_func_desc (fh)) != NULL
6308 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6309 && opd_entry_value (fdh->elf.root.u.def.section,
6310 fdh->elf.root.u.def.value,
6311 &fh->elf.root.u.def.section,
6312 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6314 fh->elf.root.type = fdh->elf.root.type;
6315 fh->elf.forced_local = 1;
6316 fh->elf.def_regular = fdh->elf.def_regular;
6317 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6320 /* If this is a function code symbol, transfer dynamic linking
6321 information to the function descriptor symbol. */
6325 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6326 if (ent->plt.refcount > 0)
6329 || fh->elf.root.root.string[0] != '.'
6330 || fh->elf.root.root.string[1] == '\0')
6333 /* Find the corresponding function descriptor symbol. Create it
6334 as undefined if necessary. */
6336 fdh = lookup_fdh (fh, htab);
6338 && !info->executable
6339 && (fh->elf.root.type == bfd_link_hash_undefined
6340 || fh->elf.root.type == bfd_link_hash_undefweak))
6342 fdh = make_fdh (info, fh);
6347 /* Fake function descriptors are made undefweak. If the function
6348 code symbol is strong undefined, make the fake sym the same.
6349 If the function code symbol is defined, then force the fake
6350 descriptor local; We can't support overriding of symbols in a
6351 shared library on a fake descriptor. */
6355 && fdh->elf.root.type == bfd_link_hash_undefweak)
6357 if (fh->elf.root.type == bfd_link_hash_undefined)
6359 fdh->elf.root.type = bfd_link_hash_undefined;
6360 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6362 else if (fh->elf.root.type == bfd_link_hash_defined
6363 || fh->elf.root.type == bfd_link_hash_defweak)
6365 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6370 && !fdh->elf.forced_local
6371 && (!info->executable
6372 || fdh->elf.def_dynamic
6373 || fdh->elf.ref_dynamic
6374 || (fdh->elf.root.type == bfd_link_hash_undefweak
6375 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6377 if (fdh->elf.dynindx == -1)
6378 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6380 fdh->elf.ref_regular |= fh->elf.ref_regular;
6381 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6382 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6383 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6384 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6386 move_plt_plist (fh, fdh);
6387 fdh->elf.needs_plt = 1;
6389 fdh->is_func_descriptor = 1;
6394 /* Now that the info is on the function descriptor, clear the
6395 function code sym info. Any function code syms for which we
6396 don't have a definition in a regular file, we force local.
6397 This prevents a shared library from exporting syms that have
6398 been imported from another library. Function code syms that
6399 are really in the library we must leave global to prevent the
6400 linker dragging in a definition from a static library. */
6401 force_local = (!fh->elf.def_regular
6403 || !fdh->elf.def_regular
6404 || fdh->elf.forced_local);
6405 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6410 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6411 this hook to a) provide some gcc support functions, and b) transfer
6412 dynamic linking information gathered so far on function code symbol
6413 entries, to their corresponding function descriptor symbol entries. */
6416 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6417 struct bfd_link_info *info)
6419 struct ppc_link_hash_table *htab;
6421 const struct sfpr_def_parms funcs[] =
6423 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6424 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6425 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6426 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6427 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6428 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6429 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6430 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6431 { "._savef", 14, 31, savefpr, savefpr1_tail },
6432 { "._restf", 14, 31, restfpr, restfpr1_tail },
6433 { "_savevr_", 20, 31, savevr, savevr_tail },
6434 { "_restvr_", 20, 31, restvr, restvr_tail }
6437 htab = ppc_hash_table (info);
6441 if (htab->sfpr == NULL)
6442 /* We don't have any relocs. */
6445 /* Provide any missing _save* and _rest* functions. */
6446 htab->sfpr->size = 0;
6447 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6448 if (!sfpr_define (info, &funcs[i]))
6451 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6453 if (htab->sfpr->size == 0)
6454 htab->sfpr->flags |= SEC_EXCLUDE;
6459 /* Adjust a symbol defined by a dynamic object and referenced by a
6460 regular object. The current definition is in some section of the
6461 dynamic object, but we're not including those sections. We have to
6462 change the definition to something the rest of the link can
6466 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6467 struct elf_link_hash_entry *h)
6469 struct ppc_link_hash_table *htab;
6472 htab = ppc_hash_table (info);
6476 /* Deal with function syms. */
6477 if (h->type == STT_FUNC
6478 || h->type == STT_GNU_IFUNC
6481 /* Clear procedure linkage table information for any symbol that
6482 won't need a .plt entry. */
6483 struct plt_entry *ent;
6484 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6485 if (ent->plt.refcount > 0)
6488 || (h->type != STT_GNU_IFUNC
6489 && (SYMBOL_CALLS_LOCAL (info, h)
6490 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6491 && h->root.type == bfd_link_hash_undefweak))))
6493 h->plt.plist = NULL;
6498 h->plt.plist = NULL;
6500 /* If this is a weak symbol, and there is a real definition, the
6501 processor independent code will have arranged for us to see the
6502 real definition first, and we can just use the same value. */
6503 if (h->u.weakdef != NULL)
6505 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6506 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6507 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6508 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6509 if (ELIMINATE_COPY_RELOCS)
6510 h->non_got_ref = h->u.weakdef->non_got_ref;
6514 /* If we are creating a shared library, we must presume that the
6515 only references to the symbol are via the global offset table.
6516 For such cases we need not do anything here; the relocations will
6517 be handled correctly by relocate_section. */
6521 /* If there are no references to this symbol that do not use the
6522 GOT, we don't need to generate a copy reloc. */
6523 if (!h->non_got_ref)
6526 /* Don't generate a copy reloc for symbols defined in the executable. */
6527 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6530 if (ELIMINATE_COPY_RELOCS)
6532 struct ppc_link_hash_entry * eh;
6533 struct elf_dyn_relocs *p;
6535 eh = (struct ppc_link_hash_entry *) h;
6536 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6538 s = p->sec->output_section;
6539 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6543 /* If we didn't find any dynamic relocs in read-only sections, then
6544 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6552 if (h->plt.plist != NULL)
6554 /* We should never get here, but unfortunately there are versions
6555 of gcc out there that improperly (for this ABI) put initialized
6556 function pointers, vtable refs and suchlike in read-only
6557 sections. Allow them to proceed, but warn that this might
6558 break at runtime. */
6559 info->callbacks->einfo
6560 (_("%P: copy reloc against `%s' requires lazy plt linking; "
6561 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6562 h->root.root.string);
6565 /* This is a reference to a symbol defined by a dynamic object which
6566 is not a function. */
6568 /* We must allocate the symbol in our .dynbss section, which will
6569 become part of the .bss section of the executable. There will be
6570 an entry for this symbol in the .dynsym section. The dynamic
6571 object will contain position independent code, so all references
6572 from the dynamic object to this symbol will go through the global
6573 offset table. The dynamic linker will use the .dynsym entry to
6574 determine the address it must put in the global offset table, so
6575 both the dynamic object and the regular object will refer to the
6576 same memory location for the variable. */
6578 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6579 to copy the initial value out of the dynamic object and into the
6580 runtime process image. We need to remember the offset into the
6581 .rela.bss section we are going to use. */
6582 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6584 htab->relbss->size += sizeof (Elf64_External_Rela);
6590 return _bfd_elf_adjust_dynamic_copy (h, s);
6593 /* If given a function descriptor symbol, hide both the function code
6594 sym and the descriptor. */
6596 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6597 struct elf_link_hash_entry *h,
6598 bfd_boolean force_local)
6600 struct ppc_link_hash_entry *eh;
6601 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6603 eh = (struct ppc_link_hash_entry *) h;
6604 if (eh->is_func_descriptor)
6606 struct ppc_link_hash_entry *fh = eh->oh;
6611 struct ppc_link_hash_table *htab;
6614 /* We aren't supposed to use alloca in BFD because on
6615 systems which do not have alloca the version in libiberty
6616 calls xmalloc, which might cause the program to crash
6617 when it runs out of memory. This function doesn't have a
6618 return status, so there's no way to gracefully return an
6619 error. So cheat. We know that string[-1] can be safely
6620 accessed; It's either a string in an ELF string table,
6621 or allocated in an objalloc structure. */
6623 p = eh->elf.root.root.string - 1;
6626 htab = ppc_hash_table (info);
6630 fh = (struct ppc_link_hash_entry *)
6631 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6634 /* Unfortunately, if it so happens that the string we were
6635 looking for was allocated immediately before this string,
6636 then we overwrote the string terminator. That's the only
6637 reason the lookup should fail. */
6640 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6641 while (q >= eh->elf.root.root.string && *q == *p)
6643 if (q < eh->elf.root.root.string && *p == '.')
6644 fh = (struct ppc_link_hash_entry *)
6645 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6654 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6659 get_sym_h (struct elf_link_hash_entry **hp,
6660 Elf_Internal_Sym **symp,
6662 unsigned char **tls_maskp,
6663 Elf_Internal_Sym **locsymsp,
6664 unsigned long r_symndx,
6667 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6669 if (r_symndx >= symtab_hdr->sh_info)
6671 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6672 struct elf_link_hash_entry *h;
6674 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6675 h = elf_follow_link (h);
6683 if (symsecp != NULL)
6685 asection *symsec = NULL;
6686 if (h->root.type == bfd_link_hash_defined
6687 || h->root.type == bfd_link_hash_defweak)
6688 symsec = h->root.u.def.section;
6692 if (tls_maskp != NULL)
6694 struct ppc_link_hash_entry *eh;
6696 eh = (struct ppc_link_hash_entry *) h;
6697 *tls_maskp = &eh->tls_mask;
6702 Elf_Internal_Sym *sym;
6703 Elf_Internal_Sym *locsyms = *locsymsp;
6705 if (locsyms == NULL)
6707 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6708 if (locsyms == NULL)
6709 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6710 symtab_hdr->sh_info,
6711 0, NULL, NULL, NULL);
6712 if (locsyms == NULL)
6714 *locsymsp = locsyms;
6716 sym = locsyms + r_symndx;
6724 if (symsecp != NULL)
6725 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6727 if (tls_maskp != NULL)
6729 struct got_entry **lgot_ents;
6730 unsigned char *tls_mask;
6733 lgot_ents = elf_local_got_ents (ibfd);
6734 if (lgot_ents != NULL)
6736 struct plt_entry **local_plt = (struct plt_entry **)
6737 (lgot_ents + symtab_hdr->sh_info);
6738 unsigned char *lgot_masks = (unsigned char *)
6739 (local_plt + symtab_hdr->sh_info);
6740 tls_mask = &lgot_masks[r_symndx];
6742 *tls_maskp = tls_mask;
6748 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6749 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6750 type suitable for optimization, and 1 otherwise. */
6753 get_tls_mask (unsigned char **tls_maskp,
6754 unsigned long *toc_symndx,
6755 bfd_vma *toc_addend,
6756 Elf_Internal_Sym **locsymsp,
6757 const Elf_Internal_Rela *rel,
6760 unsigned long r_symndx;
6762 struct elf_link_hash_entry *h;
6763 Elf_Internal_Sym *sym;
6767 r_symndx = ELF64_R_SYM (rel->r_info);
6768 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6771 if ((*tls_maskp != NULL && **tls_maskp != 0)
6773 || ppc64_elf_section_data (sec) == NULL
6774 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6777 /* Look inside a TOC section too. */
6780 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6781 off = h->root.u.def.value;
6784 off = sym->st_value;
6785 off += rel->r_addend;
6786 BFD_ASSERT (off % 8 == 0);
6787 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6788 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6789 if (toc_symndx != NULL)
6790 *toc_symndx = r_symndx;
6791 if (toc_addend != NULL)
6792 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6793 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6795 if ((h == NULL || is_static_defined (h))
6796 && (next_r == -1 || next_r == -2))
6801 /* Find (or create) an entry in the tocsave hash table. */
6803 static struct tocsave_entry *
6804 tocsave_find (struct ppc_link_hash_table *htab,
6805 enum insert_option insert,
6806 Elf_Internal_Sym **local_syms,
6807 const Elf_Internal_Rela *irela,
6810 unsigned long r_indx;
6811 struct elf_link_hash_entry *h;
6812 Elf_Internal_Sym *sym;
6813 struct tocsave_entry ent, *p;
6815 struct tocsave_entry **slot;
6817 r_indx = ELF64_R_SYM (irela->r_info);
6818 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
6820 if (ent.sec == NULL || ent.sec->output_section == NULL)
6822 (*_bfd_error_handler)
6823 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6828 ent.offset = h->root.u.def.value;
6830 ent.offset = sym->st_value;
6831 ent.offset += irela->r_addend;
6833 hash = tocsave_htab_hash (&ent);
6834 slot = ((struct tocsave_entry **)
6835 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
6841 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
6850 /* Adjust all global syms defined in opd sections. In gcc generated
6851 code for the old ABI, these will already have been done. */
6854 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6856 struct ppc_link_hash_entry *eh;
6858 struct _opd_sec_data *opd;
6860 if (h->root.type == bfd_link_hash_indirect)
6863 if (h->root.type != bfd_link_hash_defined
6864 && h->root.type != bfd_link_hash_defweak)
6867 eh = (struct ppc_link_hash_entry *) h;
6868 if (eh->adjust_done)
6871 sym_sec = eh->elf.root.u.def.section;
6872 opd = get_opd_info (sym_sec);
6873 if (opd != NULL && opd->adjust != NULL)
6875 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6878 /* This entry has been deleted. */
6879 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6882 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6883 if (elf_discarded_section (dsec))
6885 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6889 eh->elf.root.u.def.value = 0;
6890 eh->elf.root.u.def.section = dsec;
6893 eh->elf.root.u.def.value += adjust;
6894 eh->adjust_done = 1;
6899 /* Handles decrementing dynamic reloc counts for the reloc specified by
6900 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6901 have already been determined. */
6904 dec_dynrel_count (bfd_vma r_info,
6906 struct bfd_link_info *info,
6907 Elf_Internal_Sym **local_syms,
6908 struct elf_link_hash_entry *h,
6911 enum elf_ppc64_reloc_type r_type;
6912 struct elf_dyn_relocs *p;
6913 struct elf_dyn_relocs **pp;
6915 /* Can this reloc be dynamic? This switch, and later tests here
6916 should be kept in sync with the code in check_relocs. */
6917 r_type = ELF64_R_TYPE (r_info);
6923 case R_PPC64_TPREL16:
6924 case R_PPC64_TPREL16_LO:
6925 case R_PPC64_TPREL16_HI:
6926 case R_PPC64_TPREL16_HA:
6927 case R_PPC64_TPREL16_DS:
6928 case R_PPC64_TPREL16_LO_DS:
6929 case R_PPC64_TPREL16_HIGHER:
6930 case R_PPC64_TPREL16_HIGHERA:
6931 case R_PPC64_TPREL16_HIGHEST:
6932 case R_PPC64_TPREL16_HIGHESTA:
6936 case R_PPC64_TPREL64:
6937 case R_PPC64_DTPMOD64:
6938 case R_PPC64_DTPREL64:
6939 case R_PPC64_ADDR64:
6943 case R_PPC64_ADDR14:
6944 case R_PPC64_ADDR14_BRNTAKEN:
6945 case R_PPC64_ADDR14_BRTAKEN:
6946 case R_PPC64_ADDR16:
6947 case R_PPC64_ADDR16_DS:
6948 case R_PPC64_ADDR16_HA:
6949 case R_PPC64_ADDR16_HI:
6950 case R_PPC64_ADDR16_HIGHER:
6951 case R_PPC64_ADDR16_HIGHERA:
6952 case R_PPC64_ADDR16_HIGHEST:
6953 case R_PPC64_ADDR16_HIGHESTA:
6954 case R_PPC64_ADDR16_LO:
6955 case R_PPC64_ADDR16_LO_DS:
6956 case R_PPC64_ADDR24:
6957 case R_PPC64_ADDR32:
6958 case R_PPC64_UADDR16:
6959 case R_PPC64_UADDR32:
6960 case R_PPC64_UADDR64:
6965 if (local_syms != NULL)
6967 unsigned long r_symndx;
6968 Elf_Internal_Sym *sym;
6969 bfd *ibfd = sec->owner;
6971 r_symndx = ELF64_R_SYM (r_info);
6972 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6977 && (must_be_dyn_reloc (info, r_type)
6980 || h->root.type == bfd_link_hash_defweak
6981 || !h->def_regular))))
6982 || (ELIMINATE_COPY_RELOCS
6985 && (h->root.type == bfd_link_hash_defweak
6986 || !h->def_regular)))
6992 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6995 if (sym_sec != NULL)
6997 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6998 pp = (struct elf_dyn_relocs **) vpp;
7002 void *vpp = &elf_section_data (sec)->local_dynrel;
7003 pp = (struct elf_dyn_relocs **) vpp;
7006 /* elf_gc_sweep may have already removed all dyn relocs associated
7007 with local syms for a given section. Don't report a dynreloc
7013 while ((p = *pp) != NULL)
7017 if (!must_be_dyn_reloc (info, r_type))
7027 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7029 bfd_set_error (bfd_error_bad_value);
7033 /* Remove unused Official Procedure Descriptor entries. Currently we
7034 only remove those associated with functions in discarded link-once
7035 sections, or weakly defined functions that have been overridden. It
7036 would be possible to remove many more entries for statically linked
7040 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7043 bfd_boolean some_edited = FALSE;
7044 asection *need_pad = NULL;
7046 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7049 Elf_Internal_Rela *relstart, *rel, *relend;
7050 Elf_Internal_Shdr *symtab_hdr;
7051 Elf_Internal_Sym *local_syms;
7053 struct _opd_sec_data *opd;
7054 bfd_boolean need_edit, add_aux_fields;
7055 bfd_size_type cnt_16b = 0;
7057 if (!is_ppc64_elf (ibfd))
7060 sec = bfd_get_section_by_name (ibfd, ".opd");
7061 if (sec == NULL || sec->size == 0)
7064 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
7067 if (sec->output_section == bfd_abs_section_ptr)
7070 /* Look through the section relocs. */
7071 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7075 symtab_hdr = &elf_symtab_hdr (ibfd);
7077 /* Read the relocations. */
7078 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7080 if (relstart == NULL)
7083 /* First run through the relocs to check they are sane, and to
7084 determine whether we need to edit this opd section. */
7088 relend = relstart + sec->reloc_count;
7089 for (rel = relstart; rel < relend; )
7091 enum elf_ppc64_reloc_type r_type;
7092 unsigned long r_symndx;
7094 struct elf_link_hash_entry *h;
7095 Elf_Internal_Sym *sym;
7097 /* .opd contains a regular array of 16 or 24 byte entries. We're
7098 only interested in the reloc pointing to a function entry
7100 if (rel->r_offset != offset
7101 || rel + 1 >= relend
7102 || (rel + 1)->r_offset != offset + 8)
7104 /* If someone messes with .opd alignment then after a
7105 "ld -r" we might have padding in the middle of .opd.
7106 Also, there's nothing to prevent someone putting
7107 something silly in .opd with the assembler. No .opd
7108 optimization for them! */
7110 (*_bfd_error_handler)
7111 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7116 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7117 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7119 (*_bfd_error_handler)
7120 (_("%B: unexpected reloc type %u in .opd section"),
7126 r_symndx = ELF64_R_SYM (rel->r_info);
7127 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7131 if (sym_sec == NULL || sym_sec->owner == NULL)
7133 const char *sym_name;
7135 sym_name = h->root.root.string;
7137 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7140 (*_bfd_error_handler)
7141 (_("%B: undefined sym `%s' in .opd section"),
7147 /* opd entries are always for functions defined in the
7148 current input bfd. If the symbol isn't defined in the
7149 input bfd, then we won't be using the function in this
7150 bfd; It must be defined in a linkonce section in another
7151 bfd, or is weak. It's also possible that we are
7152 discarding the function due to a linker script /DISCARD/,
7153 which we test for via the output_section. */
7154 if (sym_sec->owner != ibfd
7155 || sym_sec->output_section == bfd_abs_section_ptr)
7160 || (rel + 1 == relend && rel->r_offset == offset + 16))
7162 if (sec->size == offset + 24)
7167 if (rel == relend && sec->size == offset + 16)
7175 if (rel->r_offset == offset + 24)
7177 else if (rel->r_offset != offset + 16)
7179 else if (rel + 1 < relend
7180 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7181 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7186 else if (rel + 2 < relend
7187 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7188 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7197 add_aux_fields = non_overlapping && cnt_16b > 0;
7199 if (need_edit || add_aux_fields)
7201 Elf_Internal_Rela *write_rel;
7202 Elf_Internal_Shdr *rel_hdr;
7203 bfd_byte *rptr, *wptr;
7204 bfd_byte *new_contents;
7209 new_contents = NULL;
7210 amt = sec->size * sizeof (long) / 8;
7211 opd = &ppc64_elf_section_data (sec)->u.opd;
7212 opd->adjust = bfd_zalloc (sec->owner, amt);
7213 if (opd->adjust == NULL)
7215 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7217 /* This seems a waste of time as input .opd sections are all
7218 zeros as generated by gcc, but I suppose there's no reason
7219 this will always be so. We might start putting something in
7220 the third word of .opd entries. */
7221 if ((sec->flags & SEC_IN_MEMORY) == 0)
7224 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7229 if (local_syms != NULL
7230 && symtab_hdr->contents != (unsigned char *) local_syms)
7232 if (elf_section_data (sec)->relocs != relstart)
7236 sec->contents = loc;
7237 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7240 elf_section_data (sec)->relocs = relstart;
7242 new_contents = sec->contents;
7245 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7246 if (new_contents == NULL)
7250 wptr = new_contents;
7251 rptr = sec->contents;
7253 write_rel = relstart;
7257 for (rel = relstart; rel < relend; rel++)
7259 unsigned long r_symndx;
7261 struct elf_link_hash_entry *h;
7262 Elf_Internal_Sym *sym;
7264 r_symndx = ELF64_R_SYM (rel->r_info);
7265 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7269 if (rel->r_offset == offset)
7271 struct ppc_link_hash_entry *fdh = NULL;
7273 /* See if the .opd entry is full 24 byte or
7274 16 byte (with fd_aux entry overlapped with next
7277 if ((rel + 2 == relend && sec->size == offset + 16)
7278 || (rel + 3 < relend
7279 && rel[2].r_offset == offset + 16
7280 && rel[3].r_offset == offset + 24
7281 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7282 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7286 && h->root.root.string[0] == '.')
7288 struct ppc_link_hash_table *htab;
7290 htab = ppc_hash_table (info);
7292 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7295 && fdh->elf.root.type != bfd_link_hash_defined
7296 && fdh->elf.root.type != bfd_link_hash_defweak)
7300 skip = (sym_sec->owner != ibfd
7301 || sym_sec->output_section == bfd_abs_section_ptr);
7304 if (fdh != NULL && sym_sec->owner == ibfd)
7306 /* Arrange for the function descriptor sym
7308 fdh->elf.root.u.def.value = 0;
7309 fdh->elf.root.u.def.section = sym_sec;
7311 opd->adjust[rel->r_offset / 8] = -1;
7315 /* We'll be keeping this opd entry. */
7319 /* Redefine the function descriptor symbol to
7320 this location in the opd section. It is
7321 necessary to update the value here rather
7322 than using an array of adjustments as we do
7323 for local symbols, because various places
7324 in the generic ELF code use the value
7325 stored in u.def.value. */
7326 fdh->elf.root.u.def.value = wptr - new_contents;
7327 fdh->adjust_done = 1;
7330 /* Local syms are a bit tricky. We could
7331 tweak them as they can be cached, but
7332 we'd need to look through the local syms
7333 for the function descriptor sym which we
7334 don't have at the moment. So keep an
7335 array of adjustments. */
7336 opd->adjust[rel->r_offset / 8]
7337 = (wptr - new_contents) - (rptr - sec->contents);
7340 memcpy (wptr, rptr, opd_ent_size);
7341 wptr += opd_ent_size;
7342 if (add_aux_fields && opd_ent_size == 16)
7344 memset (wptr, '\0', 8);
7348 rptr += opd_ent_size;
7349 offset += opd_ent_size;
7355 && !info->relocatable
7356 && !dec_dynrel_count (rel->r_info, sec, info,
7362 /* We need to adjust any reloc offsets to point to the
7363 new opd entries. While we're at it, we may as well
7364 remove redundant relocs. */
7365 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7366 if (write_rel != rel)
7367 memcpy (write_rel, rel, sizeof (*rel));
7372 sec->size = wptr - new_contents;
7373 sec->reloc_count = write_rel - relstart;
7376 free (sec->contents);
7377 sec->contents = new_contents;
7380 /* Fudge the header size too, as this is used later in
7381 elf_bfd_final_link if we are emitting relocs. */
7382 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7383 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7386 else if (elf_section_data (sec)->relocs != relstart)
7389 if (local_syms != NULL
7390 && symtab_hdr->contents != (unsigned char *) local_syms)
7392 if (!info->keep_memory)
7395 symtab_hdr->contents = (unsigned char *) local_syms;
7400 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7402 /* If we are doing a final link and the last .opd entry is just 16 byte
7403 long, add a 8 byte padding after it. */
7404 if (need_pad != NULL && !info->relocatable)
7408 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7410 BFD_ASSERT (need_pad->size > 0);
7412 p = bfd_malloc (need_pad->size + 8);
7416 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7417 p, 0, need_pad->size))
7420 need_pad->contents = p;
7421 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7425 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7429 need_pad->contents = p;
7432 memset (need_pad->contents + need_pad->size, 0, 8);
7433 need_pad->size += 8;
7439 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7442 ppc64_elf_tls_setup (struct bfd_link_info *info,
7443 int no_tls_get_addr_opt,
7446 struct ppc_link_hash_table *htab;
7448 htab = ppc_hash_table (info);
7453 htab->do_multi_toc = 0;
7454 else if (!htab->do_multi_toc)
7457 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7458 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7459 FALSE, FALSE, TRUE));
7460 /* Move dynamic linking info to the function descriptor sym. */
7461 if (htab->tls_get_addr != NULL)
7462 func_desc_adjust (&htab->tls_get_addr->elf, info);
7463 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7464 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7465 FALSE, FALSE, TRUE));
7466 if (!no_tls_get_addr_opt)
7468 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7470 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7471 FALSE, FALSE, TRUE);
7473 func_desc_adjust (opt, info);
7474 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7475 FALSE, FALSE, TRUE);
7477 && (opt_fd->root.type == bfd_link_hash_defined
7478 || opt_fd->root.type == bfd_link_hash_defweak))
7480 /* If glibc supports an optimized __tls_get_addr call stub,
7481 signalled by the presence of __tls_get_addr_opt, and we'll
7482 be calling __tls_get_addr via a plt call stub, then
7483 make __tls_get_addr point to __tls_get_addr_opt. */
7484 tga_fd = &htab->tls_get_addr_fd->elf;
7485 if (htab->elf.dynamic_sections_created
7487 && (tga_fd->type == STT_FUNC
7488 || tga_fd->needs_plt)
7489 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7490 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7491 && tga_fd->root.type == bfd_link_hash_undefweak)))
7493 struct plt_entry *ent;
7495 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7496 if (ent->plt.refcount > 0)
7500 tga_fd->root.type = bfd_link_hash_indirect;
7501 tga_fd->root.u.i.link = &opt_fd->root;
7502 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7503 if (opt_fd->dynindx != -1)
7505 /* Use __tls_get_addr_opt in dynamic relocations. */
7506 opt_fd->dynindx = -1;
7507 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7508 opt_fd->dynstr_index);
7509 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7512 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7513 tga = &htab->tls_get_addr->elf;
7514 if (opt != NULL && tga != NULL)
7516 tga->root.type = bfd_link_hash_indirect;
7517 tga->root.u.i.link = &opt->root;
7518 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7519 _bfd_elf_link_hash_hide_symbol (info, opt,
7521 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7523 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7524 htab->tls_get_addr_fd->is_func_descriptor = 1;
7525 if (htab->tls_get_addr != NULL)
7527 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7528 htab->tls_get_addr->is_func = 1;
7534 no_tls_get_addr_opt = TRUE;
7536 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7537 return _bfd_elf_tls_setup (info->output_bfd, info);
7540 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7544 branch_reloc_hash_match (const bfd *ibfd,
7545 const Elf_Internal_Rela *rel,
7546 const struct ppc_link_hash_entry *hash1,
7547 const struct ppc_link_hash_entry *hash2)
7549 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7550 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7551 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7553 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7555 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7556 struct elf_link_hash_entry *h;
7558 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7559 h = elf_follow_link (h);
7560 if (h == &hash1->elf || h == &hash2->elf)
7566 /* Run through all the TLS relocs looking for optimization
7567 opportunities. The linker has been hacked (see ppc64elf.em) to do
7568 a preliminary section layout so that we know the TLS segment
7569 offsets. We can't optimize earlier because some optimizations need
7570 to know the tp offset, and we need to optimize before allocating
7571 dynamic relocations. */
7574 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7578 struct ppc_link_hash_table *htab;
7579 unsigned char *toc_ref;
7582 if (info->relocatable || !info->executable)
7585 htab = ppc_hash_table (info);
7589 /* Make two passes over the relocs. On the first pass, mark toc
7590 entries involved with tls relocs, and check that tls relocs
7591 involved in setting up a tls_get_addr call are indeed followed by
7592 such a call. If they are not, we can't do any tls optimization.
7593 On the second pass twiddle tls_mask flags to notify
7594 relocate_section that optimization can be done, and adjust got
7595 and plt refcounts. */
7597 for (pass = 0; pass < 2; ++pass)
7598 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7600 Elf_Internal_Sym *locsyms = NULL;
7601 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7603 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7604 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7606 Elf_Internal_Rela *relstart, *rel, *relend;
7607 bfd_boolean found_tls_get_addr_arg = 0;
7609 /* Read the relocations. */
7610 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7612 if (relstart == NULL)
7615 relend = relstart + sec->reloc_count;
7616 for (rel = relstart; rel < relend; rel++)
7618 enum elf_ppc64_reloc_type r_type;
7619 unsigned long r_symndx;
7620 struct elf_link_hash_entry *h;
7621 Elf_Internal_Sym *sym;
7623 unsigned char *tls_mask;
7624 unsigned char tls_set, tls_clear, tls_type = 0;
7626 bfd_boolean ok_tprel, is_local;
7627 long toc_ref_index = 0;
7628 int expecting_tls_get_addr = 0;
7629 bfd_boolean ret = FALSE;
7631 r_symndx = ELF64_R_SYM (rel->r_info);
7632 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7636 if (elf_section_data (sec)->relocs != relstart)
7638 if (toc_ref != NULL)
7641 && (elf_symtab_hdr (ibfd).contents
7642 != (unsigned char *) locsyms))
7649 if (h->root.type == bfd_link_hash_defined
7650 || h->root.type == bfd_link_hash_defweak)
7651 value = h->root.u.def.value;
7652 else if (h->root.type == bfd_link_hash_undefweak)
7656 found_tls_get_addr_arg = 0;
7661 /* Symbols referenced by TLS relocs must be of type
7662 STT_TLS. So no need for .opd local sym adjust. */
7663 value = sym->st_value;
7672 && h->root.type == bfd_link_hash_undefweak)
7676 value += sym_sec->output_offset;
7677 value += sym_sec->output_section->vma;
7678 value -= htab->elf.tls_sec->vma;
7679 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7680 < (bfd_vma) 1 << 32);
7684 r_type = ELF64_R_TYPE (rel->r_info);
7685 /* If this section has old-style __tls_get_addr calls
7686 without marker relocs, then check that each
7687 __tls_get_addr call reloc is preceded by a reloc
7688 that conceivably belongs to the __tls_get_addr arg
7689 setup insn. If we don't find matching arg setup
7690 relocs, don't do any tls optimization. */
7692 && sec->has_tls_get_addr_call
7694 && (h == &htab->tls_get_addr->elf
7695 || h == &htab->tls_get_addr_fd->elf)
7696 && !found_tls_get_addr_arg
7697 && is_branch_reloc (r_type))
7699 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
7700 "TLS optimization disabled\n"),
7701 ibfd, sec, rel->r_offset);
7706 found_tls_get_addr_arg = 0;
7709 case R_PPC64_GOT_TLSLD16:
7710 case R_PPC64_GOT_TLSLD16_LO:
7711 expecting_tls_get_addr = 1;
7712 found_tls_get_addr_arg = 1;
7715 case R_PPC64_GOT_TLSLD16_HI:
7716 case R_PPC64_GOT_TLSLD16_HA:
7717 /* These relocs should never be against a symbol
7718 defined in a shared lib. Leave them alone if
7719 that turns out to be the case. */
7726 tls_type = TLS_TLS | TLS_LD;
7729 case R_PPC64_GOT_TLSGD16:
7730 case R_PPC64_GOT_TLSGD16_LO:
7731 expecting_tls_get_addr = 1;
7732 found_tls_get_addr_arg = 1;
7735 case R_PPC64_GOT_TLSGD16_HI:
7736 case R_PPC64_GOT_TLSGD16_HA:
7742 tls_set = TLS_TLS | TLS_TPRELGD;
7744 tls_type = TLS_TLS | TLS_GD;
7747 case R_PPC64_GOT_TPREL16_DS:
7748 case R_PPC64_GOT_TPREL16_LO_DS:
7749 case R_PPC64_GOT_TPREL16_HI:
7750 case R_PPC64_GOT_TPREL16_HA:
7755 tls_clear = TLS_TPREL;
7756 tls_type = TLS_TLS | TLS_TPREL;
7763 found_tls_get_addr_arg = 1;
7768 case R_PPC64_TOC16_LO:
7769 if (sym_sec == NULL || sym_sec != toc)
7772 /* Mark this toc entry as referenced by a TLS
7773 code sequence. We can do that now in the
7774 case of R_PPC64_TLS, and after checking for
7775 tls_get_addr for the TOC16 relocs. */
7776 if (toc_ref == NULL)
7777 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7778 if (toc_ref == NULL)
7782 value = h->root.u.def.value;
7784 value = sym->st_value;
7785 value += rel->r_addend;
7786 BFD_ASSERT (value < toc->size && value % 8 == 0);
7787 toc_ref_index = (value + toc->output_offset) / 8;
7788 if (r_type == R_PPC64_TLS
7789 || r_type == R_PPC64_TLSGD
7790 || r_type == R_PPC64_TLSLD)
7792 toc_ref[toc_ref_index] = 1;
7796 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7801 expecting_tls_get_addr = 2;
7804 case R_PPC64_TPREL64:
7808 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7813 tls_set = TLS_EXPLICIT;
7814 tls_clear = TLS_TPREL;
7819 case R_PPC64_DTPMOD64:
7823 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7825 if (rel + 1 < relend
7827 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7828 && rel[1].r_offset == rel->r_offset + 8)
7832 tls_set = TLS_EXPLICIT | TLS_GD;
7835 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7844 tls_set = TLS_EXPLICIT;
7855 if (!expecting_tls_get_addr
7856 || !sec->has_tls_get_addr_call)
7859 if (rel + 1 < relend
7860 && branch_reloc_hash_match (ibfd, rel + 1,
7862 htab->tls_get_addr_fd))
7864 if (expecting_tls_get_addr == 2)
7866 /* Check for toc tls entries. */
7867 unsigned char *toc_tls;
7870 retval = get_tls_mask (&toc_tls, NULL, NULL,
7875 if (toc_tls != NULL)
7877 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7878 found_tls_get_addr_arg = 1;
7880 toc_ref[toc_ref_index] = 1;
7886 if (expecting_tls_get_addr != 1)
7889 /* Uh oh, we didn't find the expected call. We
7890 could just mark this symbol to exclude it
7891 from tls optimization but it's safer to skip
7892 the entire optimization. */
7893 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
7894 "TLS optimization disabled\n"),
7895 ibfd, sec, rel->r_offset);
7900 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7902 struct plt_entry *ent;
7903 for (ent = htab->tls_get_addr->elf.plt.plist;
7906 if (ent->addend == 0)
7908 if (ent->plt.refcount > 0)
7910 ent->plt.refcount -= 1;
7911 expecting_tls_get_addr = 0;
7917 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7919 struct plt_entry *ent;
7920 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7923 if (ent->addend == 0)
7925 if (ent->plt.refcount > 0)
7926 ent->plt.refcount -= 1;
7934 if ((tls_set & TLS_EXPLICIT) == 0)
7936 struct got_entry *ent;
7938 /* Adjust got entry for this reloc. */
7942 ent = elf_local_got_ents (ibfd)[r_symndx];
7944 for (; ent != NULL; ent = ent->next)
7945 if (ent->addend == rel->r_addend
7946 && ent->owner == ibfd
7947 && ent->tls_type == tls_type)
7954 /* We managed to get rid of a got entry. */
7955 if (ent->got.refcount > 0)
7956 ent->got.refcount -= 1;
7961 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7962 we'll lose one or two dyn relocs. */
7963 if (!dec_dynrel_count (rel->r_info, sec, info,
7967 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7969 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7975 *tls_mask |= tls_set;
7976 *tls_mask &= ~tls_clear;
7979 if (elf_section_data (sec)->relocs != relstart)
7984 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7986 if (!info->keep_memory)
7989 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7993 if (toc_ref != NULL)
7998 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7999 the values of any global symbols in a toc section that has been
8000 edited. Globals in toc sections should be a rarity, so this function
8001 sets a flag if any are found in toc sections other than the one just
8002 edited, so that futher hash table traversals can be avoided. */
8004 struct adjust_toc_info
8007 unsigned long *skip;
8008 bfd_boolean global_toc_syms;
8011 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8014 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8016 struct ppc_link_hash_entry *eh;
8017 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8020 if (h->root.type != bfd_link_hash_defined
8021 && h->root.type != bfd_link_hash_defweak)
8024 eh = (struct ppc_link_hash_entry *) h;
8025 if (eh->adjust_done)
8028 if (eh->elf.root.u.def.section == toc_inf->toc)
8030 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8031 i = toc_inf->toc->rawsize >> 3;
8033 i = eh->elf.root.u.def.value >> 3;
8035 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8037 (*_bfd_error_handler)
8038 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8041 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8042 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8045 eh->elf.root.u.def.value -= toc_inf->skip[i];
8046 eh->adjust_done = 1;
8048 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8049 toc_inf->global_toc_syms = TRUE;
8054 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8057 ok_lo_toc_insn (unsigned int insn)
8059 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8060 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8061 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8062 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8063 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8064 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8065 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8066 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8067 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8068 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8069 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8070 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8071 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8072 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8073 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8075 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8076 && ((insn & 3) == 0 || (insn & 3) == 3))
8077 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8080 /* Examine all relocs referencing .toc sections in order to remove
8081 unused .toc entries. */
8084 ppc64_elf_edit_toc (struct bfd_link_info *info)
8087 struct adjust_toc_info toc_inf;
8088 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8090 htab->do_toc_opt = 1;
8091 toc_inf.global_toc_syms = TRUE;
8092 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8094 asection *toc, *sec;
8095 Elf_Internal_Shdr *symtab_hdr;
8096 Elf_Internal_Sym *local_syms;
8097 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8098 unsigned long *skip, *drop;
8099 unsigned char *used;
8100 unsigned char *keep, last, some_unused;
8102 if (!is_ppc64_elf (ibfd))
8105 toc = bfd_get_section_by_name (ibfd, ".toc");
8108 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
8109 || elf_discarded_section (toc))
8114 symtab_hdr = &elf_symtab_hdr (ibfd);
8116 /* Look at sections dropped from the final link. */
8119 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8121 if (sec->reloc_count == 0
8122 || !elf_discarded_section (sec)
8123 || get_opd_info (sec)
8124 || (sec->flags & SEC_ALLOC) == 0
8125 || (sec->flags & SEC_DEBUGGING) != 0)
8128 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8129 if (relstart == NULL)
8132 /* Run through the relocs to see which toc entries might be
8134 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8136 enum elf_ppc64_reloc_type r_type;
8137 unsigned long r_symndx;
8139 struct elf_link_hash_entry *h;
8140 Elf_Internal_Sym *sym;
8143 r_type = ELF64_R_TYPE (rel->r_info);
8150 case R_PPC64_TOC16_LO:
8151 case R_PPC64_TOC16_HI:
8152 case R_PPC64_TOC16_HA:
8153 case R_PPC64_TOC16_DS:
8154 case R_PPC64_TOC16_LO_DS:
8158 r_symndx = ELF64_R_SYM (rel->r_info);
8159 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8167 val = h->root.u.def.value;
8169 val = sym->st_value;
8170 val += rel->r_addend;
8172 if (val >= toc->size)
8175 /* Anything in the toc ought to be aligned to 8 bytes.
8176 If not, don't mark as unused. */
8182 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8187 skip[val >> 3] = ref_from_discarded;
8190 if (elf_section_data (sec)->relocs != relstart)
8194 /* For largetoc loads of address constants, we can convert
8195 . addis rx,2,addr@got@ha
8196 . ld ry,addr@got@l(rx)
8198 . addis rx,2,addr@toc@ha
8199 . addi ry,rx,addr@toc@l
8200 when addr is within 2G of the toc pointer. This then means
8201 that the word storing "addr" in the toc is no longer needed. */
8203 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8204 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8205 && toc->reloc_count != 0)
8207 /* Read toc relocs. */
8208 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8210 if (toc_relocs == NULL)
8213 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8215 enum elf_ppc64_reloc_type r_type;
8216 unsigned long r_symndx;
8218 struct elf_link_hash_entry *h;
8219 Elf_Internal_Sym *sym;
8222 r_type = ELF64_R_TYPE (rel->r_info);
8223 if (r_type != R_PPC64_ADDR64)
8226 r_symndx = ELF64_R_SYM (rel->r_info);
8227 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8232 || elf_discarded_section (sym_sec))
8235 if (!SYMBOL_CALLS_LOCAL (info, h))
8240 if (h->type == STT_GNU_IFUNC)
8242 val = h->root.u.def.value;
8246 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8248 val = sym->st_value;
8250 val += rel->r_addend;
8251 val += sym_sec->output_section->vma + sym_sec->output_offset;
8253 /* We don't yet know the exact toc pointer value, but we
8254 know it will be somewhere in the toc section. Don't
8255 optimize if the difference from any possible toc
8256 pointer is outside [ff..f80008000, 7fff7fff]. */
8257 addr = toc->output_section->vma + TOC_BASE_OFF;
8258 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8261 addr = toc->output_section->vma + toc->output_section->rawsize;
8262 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8267 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8272 skip[rel->r_offset >> 3]
8273 |= can_optimize | ((rel - toc_relocs) << 2);
8280 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8284 if (local_syms != NULL
8285 && symtab_hdr->contents != (unsigned char *) local_syms)
8289 && elf_section_data (sec)->relocs != relstart)
8291 if (toc_relocs != NULL
8292 && elf_section_data (toc)->relocs != toc_relocs)
8299 /* Now check all kept sections that might reference the toc.
8300 Check the toc itself last. */
8301 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8304 sec = (sec == toc ? NULL
8305 : sec->next == NULL ? toc
8306 : sec->next == toc && toc->next ? toc->next
8311 if (sec->reloc_count == 0
8312 || elf_discarded_section (sec)
8313 || get_opd_info (sec)
8314 || (sec->flags & SEC_ALLOC) == 0
8315 || (sec->flags & SEC_DEBUGGING) != 0)
8318 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8320 if (relstart == NULL)
8323 /* Mark toc entries referenced as used. */
8326 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8328 enum elf_ppc64_reloc_type r_type;
8329 unsigned long r_symndx;
8331 struct elf_link_hash_entry *h;
8332 Elf_Internal_Sym *sym;
8334 enum {no_check, check_lo, check_ha} insn_check;
8336 r_type = ELF64_R_TYPE (rel->r_info);
8340 insn_check = no_check;
8343 case R_PPC64_GOT_TLSLD16_HA:
8344 case R_PPC64_GOT_TLSGD16_HA:
8345 case R_PPC64_GOT_TPREL16_HA:
8346 case R_PPC64_GOT_DTPREL16_HA:
8347 case R_PPC64_GOT16_HA:
8348 case R_PPC64_TOC16_HA:
8349 insn_check = check_ha;
8352 case R_PPC64_GOT_TLSLD16_LO:
8353 case R_PPC64_GOT_TLSGD16_LO:
8354 case R_PPC64_GOT_TPREL16_LO_DS:
8355 case R_PPC64_GOT_DTPREL16_LO_DS:
8356 case R_PPC64_GOT16_LO:
8357 case R_PPC64_GOT16_LO_DS:
8358 case R_PPC64_TOC16_LO:
8359 case R_PPC64_TOC16_LO_DS:
8360 insn_check = check_lo;
8364 if (insn_check != no_check)
8366 bfd_vma off = rel->r_offset & ~3;
8367 unsigned char buf[4];
8370 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8375 insn = bfd_get_32 (ibfd, buf);
8376 if (insn_check == check_lo
8377 ? !ok_lo_toc_insn (insn)
8378 : ((insn & ((0x3f << 26) | 0x1f << 16))
8379 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8383 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8384 sprintf (str, "%#08x", insn);
8385 info->callbacks->einfo
8386 (_("%P: %H: toc optimization is not supported for"
8387 " %s instruction.\n"),
8388 ibfd, sec, rel->r_offset & ~3, str);
8395 case R_PPC64_TOC16_LO:
8396 case R_PPC64_TOC16_HI:
8397 case R_PPC64_TOC16_HA:
8398 case R_PPC64_TOC16_DS:
8399 case R_PPC64_TOC16_LO_DS:
8400 /* In case we're taking addresses of toc entries. */
8401 case R_PPC64_ADDR64:
8408 r_symndx = ELF64_R_SYM (rel->r_info);
8409 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8420 val = h->root.u.def.value;
8422 val = sym->st_value;
8423 val += rel->r_addend;
8425 if (val >= toc->size)
8428 if ((skip[val >> 3] & can_optimize) != 0)
8435 case R_PPC64_TOC16_HA:
8438 case R_PPC64_TOC16_LO_DS:
8439 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8440 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
8445 if ((opc & (0x3f << 2)) == (58u << 2))
8450 /* Wrong sort of reloc, or not a ld. We may
8451 as well clear ref_from_discarded too. */
8456 /* For the toc section, we only mark as used if
8457 this entry itself isn't unused. */
8460 && (used[rel->r_offset >> 3]
8461 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
8462 /* Do all the relocs again, to catch reference
8470 if (elf_section_data (sec)->relocs != relstart)
8474 /* Merge the used and skip arrays. Assume that TOC
8475 doublewords not appearing as either used or unused belong
8476 to to an entry more than one doubleword in size. */
8477 for (drop = skip, keep = used, last = 0, some_unused = 0;
8478 drop < skip + (toc->size + 7) / 8;
8483 *drop &= ~ref_from_discarded;
8484 if ((*drop & can_optimize) != 0)
8488 else if ((*drop & ref_from_discarded) != 0)
8491 last = ref_from_discarded;
8501 bfd_byte *contents, *src;
8503 Elf_Internal_Sym *sym;
8504 bfd_boolean local_toc_syms = FALSE;
8506 /* Shuffle the toc contents, and at the same time convert the
8507 skip array from booleans into offsets. */
8508 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8511 elf_section_data (toc)->this_hdr.contents = contents;
8513 for (src = contents, off = 0, drop = skip;
8514 src < contents + toc->size;
8517 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8522 memcpy (src - off, src, 8);
8526 toc->rawsize = toc->size;
8527 toc->size = src - contents - off;
8529 /* Adjust addends for relocs against the toc section sym,
8530 and optimize any accesses we can. */
8531 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8533 if (sec->reloc_count == 0
8534 || elf_discarded_section (sec))
8537 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8539 if (relstart == NULL)
8542 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8544 enum elf_ppc64_reloc_type r_type;
8545 unsigned long r_symndx;
8547 struct elf_link_hash_entry *h;
8550 r_type = ELF64_R_TYPE (rel->r_info);
8557 case R_PPC64_TOC16_LO:
8558 case R_PPC64_TOC16_HI:
8559 case R_PPC64_TOC16_HA:
8560 case R_PPC64_TOC16_DS:
8561 case R_PPC64_TOC16_LO_DS:
8562 case R_PPC64_ADDR64:
8566 r_symndx = ELF64_R_SYM (rel->r_info);
8567 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8575 val = h->root.u.def.value;
8578 val = sym->st_value;
8580 local_toc_syms = TRUE;
8583 val += rel->r_addend;
8585 if (val > toc->rawsize)
8587 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8589 else if ((skip[val >> 3] & can_optimize) != 0)
8591 Elf_Internal_Rela *tocrel
8592 = toc_relocs + (skip[val >> 3] >> 2);
8593 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8597 case R_PPC64_TOC16_HA:
8598 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8601 case R_PPC64_TOC16_LO_DS:
8602 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8606 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8608 info->callbacks->einfo
8609 (_("%P: %H: %s relocation references "
8610 "optimized away TOC entry\n"),
8611 ibfd, sec, rel->r_offset,
8612 ppc64_elf_howto_table[r_type]->name);
8613 bfd_set_error (bfd_error_bad_value);
8616 rel->r_addend = tocrel->r_addend;
8617 elf_section_data (sec)->relocs = relstart;
8621 if (h != NULL || sym->st_value != 0)
8624 rel->r_addend -= skip[val >> 3];
8625 elf_section_data (sec)->relocs = relstart;
8628 if (elf_section_data (sec)->relocs != relstart)
8632 /* We shouldn't have local or global symbols defined in the TOC,
8633 but handle them anyway. */
8634 if (local_syms != NULL)
8635 for (sym = local_syms;
8636 sym < local_syms + symtab_hdr->sh_info;
8638 if (sym->st_value != 0
8639 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8643 if (sym->st_value > toc->rawsize)
8644 i = toc->rawsize >> 3;
8646 i = sym->st_value >> 3;
8648 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8651 (*_bfd_error_handler)
8652 (_("%s defined on removed toc entry"),
8653 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8656 while ((skip[i] & (ref_from_discarded | can_optimize)));
8657 sym->st_value = (bfd_vma) i << 3;
8660 sym->st_value -= skip[i];
8661 symtab_hdr->contents = (unsigned char *) local_syms;
8664 /* Adjust any global syms defined in this toc input section. */
8665 if (toc_inf.global_toc_syms)
8668 toc_inf.skip = skip;
8669 toc_inf.global_toc_syms = FALSE;
8670 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8674 if (toc->reloc_count != 0)
8676 Elf_Internal_Shdr *rel_hdr;
8677 Elf_Internal_Rela *wrel;
8680 /* Remove unused toc relocs, and adjust those we keep. */
8681 if (toc_relocs == NULL)
8682 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8684 if (toc_relocs == NULL)
8688 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8689 if ((skip[rel->r_offset >> 3]
8690 & (ref_from_discarded | can_optimize)) == 0)
8692 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8693 wrel->r_info = rel->r_info;
8694 wrel->r_addend = rel->r_addend;
8697 else if (!dec_dynrel_count (rel->r_info, toc, info,
8698 &local_syms, NULL, NULL))
8701 elf_section_data (toc)->relocs = toc_relocs;
8702 toc->reloc_count = wrel - toc_relocs;
8703 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8704 sz = rel_hdr->sh_entsize;
8705 rel_hdr->sh_size = toc->reloc_count * sz;
8708 else if (toc_relocs != NULL
8709 && elf_section_data (toc)->relocs != toc_relocs)
8712 if (local_syms != NULL
8713 && symtab_hdr->contents != (unsigned char *) local_syms)
8715 if (!info->keep_memory)
8718 symtab_hdr->contents = (unsigned char *) local_syms;
8726 /* Return true iff input section I references the TOC using
8727 instructions limited to +/-32k offsets. */
8730 ppc64_elf_has_small_toc_reloc (asection *i)
8732 return (is_ppc64_elf (i->owner)
8733 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8736 /* Allocate space for one GOT entry. */
8739 allocate_got (struct elf_link_hash_entry *h,
8740 struct bfd_link_info *info,
8741 struct got_entry *gent)
8743 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8745 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8746 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8748 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8749 ? 2 : 1) * sizeof (Elf64_External_Rela);
8750 asection *got = ppc64_elf_tdata (gent->owner)->got;
8752 gent->got.offset = got->size;
8753 got->size += entsize;
8755 dyn = htab->elf.dynamic_sections_created;
8757 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8758 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8759 || h->root.type != bfd_link_hash_undefweak))
8761 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8762 relgot->size += rentsize;
8764 else if (h->type == STT_GNU_IFUNC)
8766 asection *relgot = htab->reliplt;
8767 relgot->size += rentsize;
8768 htab->got_reli_size += rentsize;
8772 /* This function merges got entries in the same toc group. */
8775 merge_got_entries (struct got_entry **pent)
8777 struct got_entry *ent, *ent2;
8779 for (ent = *pent; ent != NULL; ent = ent->next)
8780 if (!ent->is_indirect)
8781 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8782 if (!ent2->is_indirect
8783 && ent2->addend == ent->addend
8784 && ent2->tls_type == ent->tls_type
8785 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8787 ent2->is_indirect = TRUE;
8788 ent2->got.ent = ent;
8792 /* Allocate space in .plt, .got and associated reloc sections for
8796 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8798 struct bfd_link_info *info;
8799 struct ppc_link_hash_table *htab;
8801 struct ppc_link_hash_entry *eh;
8802 struct elf_dyn_relocs *p;
8803 struct got_entry **pgent, *gent;
8805 if (h->root.type == bfd_link_hash_indirect)
8808 info = (struct bfd_link_info *) inf;
8809 htab = ppc_hash_table (info);
8813 if ((htab->elf.dynamic_sections_created
8815 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8816 || h->type == STT_GNU_IFUNC)
8818 struct plt_entry *pent;
8819 bfd_boolean doneone = FALSE;
8820 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8821 if (pent->plt.refcount > 0)
8823 if (!htab->elf.dynamic_sections_created
8824 || h->dynindx == -1)
8827 pent->plt.offset = s->size;
8828 s->size += PLT_ENTRY_SIZE;
8833 /* If this is the first .plt entry, make room for the special
8837 s->size += PLT_INITIAL_ENTRY_SIZE;
8839 pent->plt.offset = s->size;
8841 /* Make room for this entry. */
8842 s->size += PLT_ENTRY_SIZE;
8844 /* Make room for the .glink code. */
8847 s->size += GLINK_CALL_STUB_SIZE;
8848 /* We need bigger stubs past index 32767. */
8849 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8853 /* We also need to make an entry in the .rela.plt section. */
8856 s->size += sizeof (Elf64_External_Rela);
8860 pent->plt.offset = (bfd_vma) -1;
8863 h->plt.plist = NULL;
8869 h->plt.plist = NULL;
8873 eh = (struct ppc_link_hash_entry *) h;
8874 /* Run through the TLS GD got entries first if we're changing them
8876 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8877 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8878 if (gent->got.refcount > 0
8879 && (gent->tls_type & TLS_GD) != 0)
8881 /* This was a GD entry that has been converted to TPREL. If
8882 there happens to be a TPREL entry we can use that one. */
8883 struct got_entry *ent;
8884 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8885 if (ent->got.refcount > 0
8886 && (ent->tls_type & TLS_TPREL) != 0
8887 && ent->addend == gent->addend
8888 && ent->owner == gent->owner)
8890 gent->got.refcount = 0;
8894 /* If not, then we'll be using our own TPREL entry. */
8895 if (gent->got.refcount != 0)
8896 gent->tls_type = TLS_TLS | TLS_TPREL;
8899 /* Remove any list entry that won't generate a word in the GOT before
8900 we call merge_got_entries. Otherwise we risk merging to empty
8902 pgent = &h->got.glist;
8903 while ((gent = *pgent) != NULL)
8904 if (gent->got.refcount > 0)
8906 if ((gent->tls_type & TLS_LD) != 0
8909 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8910 *pgent = gent->next;
8913 pgent = &gent->next;
8916 *pgent = gent->next;
8918 if (!htab->do_multi_toc)
8919 merge_got_entries (&h->got.glist);
8921 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8922 if (!gent->is_indirect)
8924 /* Make sure this symbol is output as a dynamic symbol.
8925 Undefined weak syms won't yet be marked as dynamic,
8926 nor will all TLS symbols. */
8927 if (h->dynindx == -1
8929 && h->type != STT_GNU_IFUNC
8930 && htab->elf.dynamic_sections_created)
8932 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8936 if (!is_ppc64_elf (gent->owner))
8939 allocate_got (h, info, gent);
8942 if (eh->dyn_relocs == NULL
8943 || (!htab->elf.dynamic_sections_created
8944 && h->type != STT_GNU_IFUNC))
8947 /* In the shared -Bsymbolic case, discard space allocated for
8948 dynamic pc-relative relocs against symbols which turn out to be
8949 defined in regular objects. For the normal shared case, discard
8950 space for relocs that have become local due to symbol visibility
8955 /* Relocs that use pc_count are those that appear on a call insn,
8956 or certain REL relocs (see must_be_dyn_reloc) that can be
8957 generated via assembly. We want calls to protected symbols to
8958 resolve directly to the function rather than going via the plt.
8959 If people want function pointer comparisons to work as expected
8960 then they should avoid writing weird assembly. */
8961 if (SYMBOL_CALLS_LOCAL (info, h))
8963 struct elf_dyn_relocs **pp;
8965 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8967 p->count -= p->pc_count;
8976 /* Also discard relocs on undefined weak syms with non-default
8978 if (eh->dyn_relocs != NULL
8979 && h->root.type == bfd_link_hash_undefweak)
8981 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8982 eh->dyn_relocs = NULL;
8984 /* Make sure this symbol is output as a dynamic symbol.
8985 Undefined weak syms won't yet be marked as dynamic. */
8986 else if (h->dynindx == -1
8987 && !h->forced_local)
8989 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8994 else if (h->type == STT_GNU_IFUNC)
8996 if (!h->non_got_ref)
8997 eh->dyn_relocs = NULL;
8999 else if (ELIMINATE_COPY_RELOCS)
9001 /* For the non-shared case, discard space for relocs against
9002 symbols which turn out to need copy relocs or are not
9008 /* Make sure this symbol is output as a dynamic symbol.
9009 Undefined weak syms won't yet be marked as dynamic. */
9010 if (h->dynindx == -1
9011 && !h->forced_local)
9013 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9017 /* If that succeeded, we know we'll be keeping all the
9019 if (h->dynindx != -1)
9023 eh->dyn_relocs = NULL;
9028 /* Finally, allocate space. */
9029 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9031 asection *sreloc = elf_section_data (p->sec)->sreloc;
9032 if (!htab->elf.dynamic_sections_created)
9033 sreloc = htab->reliplt;
9034 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9040 /* Find any dynamic relocs that apply to read-only sections. */
9043 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9045 struct ppc_link_hash_entry *eh;
9046 struct elf_dyn_relocs *p;
9048 eh = (struct ppc_link_hash_entry *) h;
9049 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9051 asection *s = p->sec->output_section;
9053 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9055 struct bfd_link_info *info = inf;
9057 info->flags |= DF_TEXTREL;
9059 /* Not an error, just cut short the traversal. */
9066 /* Set the sizes of the dynamic sections. */
9069 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
9070 struct bfd_link_info *info)
9072 struct ppc_link_hash_table *htab;
9077 struct got_entry *first_tlsld;
9079 htab = ppc_hash_table (info);
9083 dynobj = htab->elf.dynobj;
9087 if (htab->elf.dynamic_sections_created)
9089 /* Set the contents of the .interp section to the interpreter. */
9090 if (info->executable)
9092 s = bfd_get_section_by_name (dynobj, ".interp");
9095 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9096 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9100 /* Set up .got offsets for local syms, and space for local dynamic
9102 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9104 struct got_entry **lgot_ents;
9105 struct got_entry **end_lgot_ents;
9106 struct plt_entry **local_plt;
9107 struct plt_entry **end_local_plt;
9108 unsigned char *lgot_masks;
9109 bfd_size_type locsymcount;
9110 Elf_Internal_Shdr *symtab_hdr;
9113 if (!is_ppc64_elf (ibfd))
9116 for (s = ibfd->sections; s != NULL; s = s->next)
9118 struct elf_dyn_relocs *p;
9120 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9122 if (!bfd_is_abs_section (p->sec)
9123 && bfd_is_abs_section (p->sec->output_section))
9125 /* Input section has been discarded, either because
9126 it is a copy of a linkonce section or due to
9127 linker script /DISCARD/, so we'll be discarding
9130 else if (p->count != 0)
9132 srel = elf_section_data (p->sec)->sreloc;
9133 if (!htab->elf.dynamic_sections_created)
9134 srel = htab->reliplt;
9135 srel->size += p->count * sizeof (Elf64_External_Rela);
9136 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9137 info->flags |= DF_TEXTREL;
9142 lgot_ents = elf_local_got_ents (ibfd);
9146 symtab_hdr = &elf_symtab_hdr (ibfd);
9147 locsymcount = symtab_hdr->sh_info;
9148 end_lgot_ents = lgot_ents + locsymcount;
9149 local_plt = (struct plt_entry **) end_lgot_ents;
9150 end_local_plt = local_plt + locsymcount;
9151 lgot_masks = (unsigned char *) end_local_plt;
9152 s = ppc64_elf_tdata (ibfd)->got;
9153 srel = ppc64_elf_tdata (ibfd)->relgot;
9154 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9156 struct got_entry **pent, *ent;
9159 while ((ent = *pent) != NULL)
9160 if (ent->got.refcount > 0)
9162 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9164 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9169 unsigned int num = 1;
9170 ent->got.offset = s->size;
9171 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9175 srel->size += num * sizeof (Elf64_External_Rela);
9176 else if ((*lgot_masks & PLT_IFUNC) != 0)
9179 += num * sizeof (Elf64_External_Rela);
9181 += num * sizeof (Elf64_External_Rela);
9190 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9191 for (; local_plt < end_local_plt; ++local_plt)
9193 struct plt_entry *ent;
9195 for (ent = *local_plt; ent != NULL; ent = ent->next)
9196 if (ent->plt.refcount > 0)
9199 ent->plt.offset = s->size;
9200 s->size += PLT_ENTRY_SIZE;
9202 htab->reliplt->size += sizeof (Elf64_External_Rela);
9205 ent->plt.offset = (bfd_vma) -1;
9209 /* Allocate global sym .plt and .got entries, and space for global
9210 sym dynamic relocs. */
9211 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9214 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9216 struct got_entry *ent;
9218 if (!is_ppc64_elf (ibfd))
9221 ent = ppc64_tlsld_got (ibfd);
9222 if (ent->got.refcount > 0)
9224 if (!htab->do_multi_toc && first_tlsld != NULL)
9226 ent->is_indirect = TRUE;
9227 ent->got.ent = first_tlsld;
9231 if (first_tlsld == NULL)
9233 s = ppc64_elf_tdata (ibfd)->got;
9234 ent->got.offset = s->size;
9239 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9240 srel->size += sizeof (Elf64_External_Rela);
9245 ent->got.offset = (bfd_vma) -1;
9248 /* We now have determined the sizes of the various dynamic sections.
9249 Allocate memory for them. */
9251 for (s = dynobj->sections; s != NULL; s = s->next)
9253 if ((s->flags & SEC_LINKER_CREATED) == 0)
9256 if (s == htab->brlt || s == htab->relbrlt)
9257 /* These haven't been allocated yet; don't strip. */
9259 else if (s == htab->got
9263 || s == htab->dynbss)
9265 /* Strip this section if we don't need it; see the
9268 else if (s == htab->glink_eh_frame)
9270 if (!bfd_is_abs_section (s->output_section))
9271 /* Not sized yet. */
9274 else if (CONST_STRNEQ (s->name, ".rela"))
9278 if (s != htab->relplt)
9281 /* We use the reloc_count field as a counter if we need
9282 to copy relocs into the output file. */
9288 /* It's not one of our sections, so don't allocate space. */
9294 /* If we don't need this section, strip it from the
9295 output file. This is mostly to handle .rela.bss and
9296 .rela.plt. We must create both sections in
9297 create_dynamic_sections, because they must be created
9298 before the linker maps input sections to output
9299 sections. The linker does that before
9300 adjust_dynamic_symbol is called, and it is that
9301 function which decides whether anything needs to go
9302 into these sections. */
9303 s->flags |= SEC_EXCLUDE;
9307 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9310 /* Allocate memory for the section contents. We use bfd_zalloc
9311 here in case unused entries are not reclaimed before the
9312 section's contents are written out. This should not happen,
9313 but this way if it does we get a R_PPC64_NONE reloc in .rela
9314 sections instead of garbage.
9315 We also rely on the section contents being zero when writing
9317 s->contents = bfd_zalloc (dynobj, s->size);
9318 if (s->contents == NULL)
9322 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9324 if (!is_ppc64_elf (ibfd))
9327 s = ppc64_elf_tdata (ibfd)->got;
9328 if (s != NULL && s != htab->got)
9331 s->flags |= SEC_EXCLUDE;
9334 s->contents = bfd_zalloc (ibfd, s->size);
9335 if (s->contents == NULL)
9339 s = ppc64_elf_tdata (ibfd)->relgot;
9343 s->flags |= SEC_EXCLUDE;
9346 s->contents = bfd_zalloc (ibfd, s->size);
9347 if (s->contents == NULL)
9355 if (htab->elf.dynamic_sections_created)
9357 /* Add some entries to the .dynamic section. We fill in the
9358 values later, in ppc64_elf_finish_dynamic_sections, but we
9359 must add the entries now so that we get the correct size for
9360 the .dynamic section. The DT_DEBUG entry is filled in by the
9361 dynamic linker and used by the debugger. */
9362 #define add_dynamic_entry(TAG, VAL) \
9363 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9365 if (info->executable)
9367 if (!add_dynamic_entry (DT_DEBUG, 0))
9371 if (htab->plt != NULL && htab->plt->size != 0)
9373 if (!add_dynamic_entry (DT_PLTGOT, 0)
9374 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9375 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9376 || !add_dynamic_entry (DT_JMPREL, 0)
9377 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9383 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9384 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9388 if (!htab->no_tls_get_addr_opt
9389 && htab->tls_get_addr_fd != NULL
9390 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9391 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9396 if (!add_dynamic_entry (DT_RELA, 0)
9397 || !add_dynamic_entry (DT_RELASZ, 0)
9398 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9401 /* If any dynamic relocs apply to a read-only section,
9402 then we need a DT_TEXTREL entry. */
9403 if ((info->flags & DF_TEXTREL) == 0)
9404 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9406 if ((info->flags & DF_TEXTREL) != 0)
9408 if (!add_dynamic_entry (DT_TEXTREL, 0))
9413 #undef add_dynamic_entry
9418 /* Determine the type of stub needed, if any, for a call. */
9420 static inline enum ppc_stub_type
9421 ppc_type_of_stub (asection *input_sec,
9422 const Elf_Internal_Rela *rel,
9423 struct ppc_link_hash_entry **hash,
9424 struct plt_entry **plt_ent,
9425 bfd_vma destination)
9427 struct ppc_link_hash_entry *h = *hash;
9429 bfd_vma branch_offset;
9430 bfd_vma max_branch_offset;
9431 enum elf_ppc64_reloc_type r_type;
9435 struct plt_entry *ent;
9436 struct ppc_link_hash_entry *fdh = h;
9438 && h->oh->is_func_descriptor)
9440 fdh = ppc_follow_link (h->oh);
9444 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9445 if (ent->addend == rel->r_addend
9446 && ent->plt.offset != (bfd_vma) -1)
9449 return ppc_stub_plt_call;
9452 /* Here, we know we don't have a plt entry. If we don't have a
9453 either a defined function descriptor or a defined entry symbol
9454 in a regular object file, then it is pointless trying to make
9455 any other type of stub. */
9456 if (!is_static_defined (&fdh->elf)
9457 && !is_static_defined (&h->elf))
9458 return ppc_stub_none;
9460 else if (elf_local_got_ents (input_sec->owner) != NULL)
9462 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9463 struct plt_entry **local_plt = (struct plt_entry **)
9464 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9465 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9467 if (local_plt[r_symndx] != NULL)
9469 struct plt_entry *ent;
9471 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9472 if (ent->addend == rel->r_addend
9473 && ent->plt.offset != (bfd_vma) -1)
9476 return ppc_stub_plt_call;
9481 /* Determine where the call point is. */
9482 location = (input_sec->output_offset
9483 + input_sec->output_section->vma
9486 branch_offset = destination - location;
9487 r_type = ELF64_R_TYPE (rel->r_info);
9489 /* Determine if a long branch stub is needed. */
9490 max_branch_offset = 1 << 25;
9491 if (r_type != R_PPC64_REL24)
9492 max_branch_offset = 1 << 15;
9494 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9495 /* We need a stub. Figure out whether a long_branch or plt_branch
9497 return ppc_stub_long_branch;
9499 return ppc_stub_none;
9502 /* With power7 weakly ordered memory model, it is possible for ld.so
9503 to update a plt entry in one thread and have another thread see a
9504 stale zero toc entry. To avoid this we need some sort of acquire
9505 barrier in the call stub. One solution is to make the load of the
9506 toc word seem to appear to depend on the load of the function entry
9507 word. Another solution is to test for r2 being zero, and branch to
9508 the appropriate glink entry if so.
9510 . fake dep barrier compare
9511 . ld 11,xxx(2) ld 11,xxx(2)
9513 . xor 11,11,11 ld 2,xxx+8(2)
9514 . add 2,2,11 cmpldi 2,0
9515 . ld 2,xxx+8(2) bnectr+
9516 . bctr b <glink_entry>
9518 The solution involving the compare turns out to be faster, so
9519 that's what we use unless the branch won't reach. */
9521 #define ALWAYS_USE_FAKE_DEP 0
9522 #define ALWAYS_EMIT_R2SAVE 0
9524 #define PPC_LO(v) ((v) & 0xffff)
9525 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9526 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9528 static inline unsigned int
9529 plt_stub_size (struct ppc_link_hash_table *htab,
9530 struct ppc_stub_hash_entry *stub_entry,
9533 unsigned size = PLT_CALL_STUB_SIZE;
9535 if (!(ALWAYS_EMIT_R2SAVE
9536 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
9538 if (!htab->plt_static_chain)
9540 if (htab->plt_thread_safe)
9542 if (PPC_HA (off) == 0)
9544 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
9546 if (stub_entry->h != NULL
9547 && (stub_entry->h == htab->tls_get_addr_fd
9548 || stub_entry->h == htab->tls_get_addr)
9549 && !htab->no_tls_get_addr_opt)
9554 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9555 then return the padding needed to do so. */
9556 static inline unsigned int
9557 plt_stub_pad (struct ppc_link_hash_table *htab,
9558 struct ppc_stub_hash_entry *stub_entry,
9561 int stub_align = 1 << htab->plt_stub_align;
9562 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
9563 bfd_vma stub_off = stub_entry->stub_sec->size;
9565 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
9566 > (stub_size & -stub_align))
9567 return stub_align - (stub_off & (stub_align - 1));
9571 /* Build a .plt call stub. */
9573 static inline bfd_byte *
9574 build_plt_stub (struct ppc_link_hash_table *htab,
9575 struct ppc_stub_hash_entry *stub_entry,
9576 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9578 bfd *obfd = htab->stub_bfd;
9579 bfd_boolean plt_static_chain = htab->plt_static_chain;
9580 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
9581 bfd_boolean use_fake_dep = plt_thread_safe;
9582 bfd_vma cmp_branch_off = 0;
9584 if (!ALWAYS_USE_FAKE_DEP
9586 && !(stub_entry->h != NULL
9587 && (stub_entry->h == htab->tls_get_addr_fd
9588 || stub_entry->h == htab->tls_get_addr)
9589 && !htab->no_tls_get_addr_opt))
9591 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
9592 bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9593 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
9596 if (pltindex > 32767)
9597 glinkoff += (pltindex - 32767) * 4;
9599 + htab->glink->output_offset
9600 + htab->glink->output_section->vma);
9601 from = (p - stub_entry->stub_sec->contents
9602 + 4 * (ALWAYS_EMIT_R2SAVE
9603 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9604 + 4 * (PPC_HA (offset) != 0)
9605 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
9607 + 4 * (plt_static_chain != 0)
9609 + stub_entry->stub_sec->output_offset
9610 + stub_entry->stub_sec->output_section->vma);
9611 cmp_branch_off = to - from;
9612 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
9615 if (PPC_HA (offset) != 0)
9619 if (ALWAYS_EMIT_R2SAVE
9620 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9622 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9623 r[1].r_offset = r[0].r_offset + 4;
9624 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9625 r[1].r_addend = r[0].r_addend;
9626 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9628 r[2].r_offset = r[1].r_offset + 4;
9629 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9630 r[2].r_addend = r[0].r_addend;
9634 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
9635 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9636 r[2].r_addend = r[0].r_addend + 8;
9637 if (plt_static_chain)
9639 r[3].r_offset = r[2].r_offset + 4;
9640 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9641 r[3].r_addend = r[0].r_addend + 16;
9645 if (ALWAYS_EMIT_R2SAVE
9646 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9647 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9648 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9649 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9650 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9652 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9655 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9658 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9659 bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4;
9661 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9662 if (plt_static_chain)
9663 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9669 if (ALWAYS_EMIT_R2SAVE
9670 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9672 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9673 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9675 r[1].r_offset = r[0].r_offset + 4;
9676 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9677 r[1].r_addend = r[0].r_addend;
9681 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
9682 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9683 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
9684 if (plt_static_chain)
9686 r[2].r_offset = r[1].r_offset + 4;
9687 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9688 r[2].r_addend = r[0].r_addend + 8;
9692 if (ALWAYS_EMIT_R2SAVE
9693 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9694 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9695 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9696 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
9698 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9701 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9704 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9705 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
9707 if (plt_static_chain)
9708 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9709 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9711 if (plt_thread_safe && !use_fake_dep)
9713 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
9714 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
9715 bfd_put_32 (obfd, B_DOT + cmp_branch_off, p), p += 4;
9718 bfd_put_32 (obfd, BCTR, p), p += 4;
9722 /* Build a special .plt call stub for __tls_get_addr. */
9724 #define LD_R11_0R3 0xe9630000
9725 #define LD_R12_0R3 0xe9830000
9726 #define MR_R0_R3 0x7c601b78
9727 #define CMPDI_R11_0 0x2c2b0000
9728 #define ADD_R3_R12_R13 0x7c6c6a14
9729 #define BEQLR 0x4d820020
9730 #define MR_R3_R0 0x7c030378
9731 #define MFLR_R11 0x7d6802a6
9732 #define STD_R11_0R1 0xf9610000
9733 #define BCTRL 0x4e800421
9734 #define LD_R11_0R1 0xe9610000
9735 #define LD_R2_0R1 0xe8410000
9736 #define MTLR_R11 0x7d6803a6
9738 static inline bfd_byte *
9739 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
9740 struct ppc_stub_hash_entry *stub_entry,
9741 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9743 bfd *obfd = htab->stub_bfd;
9745 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9746 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9747 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9748 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9749 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9750 bfd_put_32 (obfd, BEQLR, p), p += 4;
9751 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9752 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9753 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9756 r[0].r_offset += 9 * 4;
9757 p = build_plt_stub (htab, stub_entry, p, offset, r);
9758 bfd_put_32 (obfd, BCTRL, p - 4);
9760 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9761 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9762 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9763 bfd_put_32 (obfd, BLR, p), p += 4;
9768 static Elf_Internal_Rela *
9769 get_relocs (asection *sec, int count)
9771 Elf_Internal_Rela *relocs;
9772 struct bfd_elf_section_data *elfsec_data;
9774 elfsec_data = elf_section_data (sec);
9775 relocs = elfsec_data->relocs;
9778 bfd_size_type relsize;
9779 relsize = sec->reloc_count * sizeof (*relocs);
9780 relocs = bfd_alloc (sec->owner, relsize);
9783 elfsec_data->relocs = relocs;
9784 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9785 sizeof (Elf_Internal_Shdr));
9786 if (elfsec_data->rela.hdr == NULL)
9788 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9789 * sizeof (Elf64_External_Rela));
9790 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
9791 sec->reloc_count = 0;
9793 relocs += sec->reloc_count;
9794 sec->reloc_count += count;
9799 get_r2off (struct bfd_link_info *info,
9800 struct ppc_stub_hash_entry *stub_entry)
9802 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9803 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9807 /* Support linking -R objects. Get the toc pointer from the
9810 asection *opd = stub_entry->h->elf.root.u.def.section;
9811 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9813 if (strcmp (opd->name, ".opd") != 0
9814 || opd->reloc_count != 0)
9816 info->callbacks->einfo (_("%P: cannot find opd entry toc for %s\n"),
9817 stub_entry->h->elf.root.root.string);
9818 bfd_set_error (bfd_error_bad_value);
9821 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9823 r2off = bfd_get_64 (opd->owner, buf);
9824 r2off -= elf_gp (info->output_bfd);
9826 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9831 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9833 struct ppc_stub_hash_entry *stub_entry;
9834 struct ppc_branch_hash_entry *br_entry;
9835 struct bfd_link_info *info;
9836 struct ppc_link_hash_table *htab;
9841 Elf_Internal_Rela *r;
9844 /* Massage our args to the form they really have. */
9845 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9848 htab = ppc_hash_table (info);
9852 /* Make a note of the offset within the stubs for this entry. */
9853 stub_entry->stub_offset = stub_entry->stub_sec->size;
9854 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9856 htab->stub_count[stub_entry->stub_type - 1] += 1;
9857 switch (stub_entry->stub_type)
9859 case ppc_stub_long_branch:
9860 case ppc_stub_long_branch_r2off:
9861 /* Branches are relative. This is where we are going to. */
9862 off = dest = (stub_entry->target_value
9863 + stub_entry->target_section->output_offset
9864 + stub_entry->target_section->output_section->vma);
9866 /* And this is where we are coming from. */
9867 off -= (stub_entry->stub_offset
9868 + stub_entry->stub_sec->output_offset
9869 + stub_entry->stub_sec->output_section->vma);
9872 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9874 bfd_vma r2off = get_r2off (info, stub_entry);
9878 htab->stub_error = TRUE;
9881 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9884 if (PPC_HA (r2off) != 0)
9887 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9890 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9894 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9896 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9898 info->callbacks->einfo (_("%P: long branch stub `%s' offset overflow\n"),
9899 stub_entry->root.string);
9900 htab->stub_error = TRUE;
9904 if (info->emitrelocations)
9906 r = get_relocs (stub_entry->stub_sec, 1);
9909 r->r_offset = loc - stub_entry->stub_sec->contents;
9910 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9912 if (stub_entry->h != NULL)
9914 struct elf_link_hash_entry **hashes;
9915 unsigned long symndx;
9916 struct ppc_link_hash_entry *h;
9918 hashes = elf_sym_hashes (htab->stub_bfd);
9921 bfd_size_type hsize;
9923 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9924 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9927 elf_sym_hashes (htab->stub_bfd) = hashes;
9928 htab->stub_globals = 1;
9930 symndx = htab->stub_globals++;
9932 hashes[symndx] = &h->elf;
9933 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9934 if (h->oh != NULL && h->oh->is_func)
9935 h = ppc_follow_link (h->oh);
9936 if (h->elf.root.u.def.section != stub_entry->target_section)
9937 /* H is an opd symbol. The addend must be zero. */
9941 off = (h->elf.root.u.def.value
9942 + h->elf.root.u.def.section->output_offset
9943 + h->elf.root.u.def.section->output_section->vma);
9950 case ppc_stub_plt_branch:
9951 case ppc_stub_plt_branch_r2off:
9952 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9953 stub_entry->root.string + 9,
9955 if (br_entry == NULL)
9957 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
9958 stub_entry->root.string);
9959 htab->stub_error = TRUE;
9963 dest = (stub_entry->target_value
9964 + stub_entry->target_section->output_offset
9965 + stub_entry->target_section->output_section->vma);
9967 bfd_put_64 (htab->brlt->owner, dest,
9968 htab->brlt->contents + br_entry->offset);
9970 if (br_entry->iter == htab->stub_iteration)
9974 if (htab->relbrlt != NULL)
9976 /* Create a reloc for the branch lookup table entry. */
9977 Elf_Internal_Rela rela;
9980 rela.r_offset = (br_entry->offset
9981 + htab->brlt->output_offset
9982 + htab->brlt->output_section->vma);
9983 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9984 rela.r_addend = dest;
9986 rl = htab->relbrlt->contents;
9987 rl += (htab->relbrlt->reloc_count++
9988 * sizeof (Elf64_External_Rela));
9989 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9991 else if (info->emitrelocations)
9993 r = get_relocs (htab->brlt, 1);
9996 /* brlt, being SEC_LINKER_CREATED does not go through the
9997 normal reloc processing. Symbols and offsets are not
9998 translated from input file to output file form, so
9999 set up the offset per the output file. */
10000 r->r_offset = (br_entry->offset
10001 + htab->brlt->output_offset
10002 + htab->brlt->output_section->vma);
10003 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10004 r->r_addend = dest;
10008 dest = (br_entry->offset
10009 + htab->brlt->output_offset
10010 + htab->brlt->output_section->vma);
10013 - elf_gp (htab->brlt->output_section->owner)
10014 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10016 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10018 info->callbacks->einfo
10019 (_("%P: linkage table error against `%s'\n"),
10020 stub_entry->root.string);
10021 bfd_set_error (bfd_error_bad_value);
10022 htab->stub_error = TRUE;
10026 if (info->emitrelocations)
10028 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10031 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10032 if (bfd_big_endian (info->output_bfd))
10033 r[0].r_offset += 2;
10034 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10035 r[0].r_offset += 4;
10036 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10037 r[0].r_addend = dest;
10038 if (PPC_HA (off) != 0)
10040 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10041 r[1].r_offset = r[0].r_offset + 4;
10042 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10043 r[1].r_addend = r[0].r_addend;
10047 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10049 if (PPC_HA (off) != 0)
10052 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10054 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10059 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10064 bfd_vma r2off = get_r2off (info, stub_entry);
10068 htab->stub_error = TRUE;
10072 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
10075 if (PPC_HA (off) != 0)
10078 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
10080 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
10085 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
10089 if (PPC_HA (r2off) != 0)
10092 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10095 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10098 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
10100 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10103 case ppc_stub_plt_call:
10104 case ppc_stub_plt_call_r2save:
10105 if (stub_entry->h != NULL
10106 && stub_entry->h->is_func_descriptor
10107 && stub_entry->h->oh != NULL)
10109 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10111 /* If the old-ABI "dot-symbol" is undefined make it weak so
10112 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10113 FIXME: We used to define the symbol on one of the call
10114 stubs instead, which is why we test symbol section id
10115 against htab->top_id in various places. Likely all
10116 these checks could now disappear. */
10117 if (fh->elf.root.type == bfd_link_hash_undefined)
10118 fh->elf.root.type = bfd_link_hash_undefweak;
10119 /* Stop undo_symbol_twiddle changing it back to undefined. */
10120 fh->was_undefined = 0;
10123 /* Now build the stub. */
10124 dest = stub_entry->plt_ent->plt.offset & ~1;
10125 if (dest >= (bfd_vma) -2)
10129 if (!htab->elf.dynamic_sections_created
10130 || stub_entry->h == NULL
10131 || stub_entry->h->elf.dynindx == -1)
10134 dest += plt->output_offset + plt->output_section->vma;
10136 if (stub_entry->h == NULL
10137 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10139 Elf_Internal_Rela rela;
10142 rela.r_offset = dest;
10143 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10144 rela.r_addend = (stub_entry->target_value
10145 + stub_entry->target_section->output_offset
10146 + stub_entry->target_section->output_section->vma);
10148 rl = (htab->reliplt->contents
10149 + (htab->reliplt->reloc_count++
10150 * sizeof (Elf64_External_Rela)));
10151 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10152 stub_entry->plt_ent->plt.offset |= 1;
10156 - elf_gp (plt->output_section->owner)
10157 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10159 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10161 info->callbacks->einfo
10162 (_("%P: linkage table error against `%s'\n"),
10163 stub_entry->h != NULL
10164 ? stub_entry->h->elf.root.root.string
10166 bfd_set_error (bfd_error_bad_value);
10167 htab->stub_error = TRUE;
10171 if (htab->plt_stub_align != 0)
10173 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10175 stub_entry->stub_sec->size += pad;
10176 stub_entry->stub_offset = stub_entry->stub_sec->size;
10181 if (info->emitrelocations)
10183 r = get_relocs (stub_entry->stub_sec,
10185 + (PPC_HA (off) != 0)
10186 + (htab->plt_static_chain
10187 && PPC_HA (off + 16) == PPC_HA (off))));
10190 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10191 if (bfd_big_endian (info->output_bfd))
10192 r[0].r_offset += 2;
10193 r[0].r_addend = dest;
10195 if (stub_entry->h != NULL
10196 && (stub_entry->h == htab->tls_get_addr_fd
10197 || stub_entry->h == htab->tls_get_addr)
10198 && !htab->no_tls_get_addr_opt)
10199 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10201 p = build_plt_stub (htab, stub_entry, loc, off, r);
10210 stub_entry->stub_sec->size += size;
10212 if (htab->emit_stub_syms)
10214 struct elf_link_hash_entry *h;
10217 const char *const stub_str[] = { "long_branch",
10218 "long_branch_r2off",
10220 "plt_branch_r2off",
10224 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10225 len2 = strlen (stub_entry->root.string);
10226 name = bfd_malloc (len1 + len2 + 2);
10229 memcpy (name, stub_entry->root.string, 9);
10230 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10231 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10232 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10235 if (h->root.type == bfd_link_hash_new)
10237 h->root.type = bfd_link_hash_defined;
10238 h->root.u.def.section = stub_entry->stub_sec;
10239 h->root.u.def.value = stub_entry->stub_offset;
10240 h->ref_regular = 1;
10241 h->def_regular = 1;
10242 h->ref_regular_nonweak = 1;
10243 h->forced_local = 1;
10251 /* As above, but don't actually build the stub. Just bump offset so
10252 we know stub section sizes, and select plt_branch stubs where
10253 long_branch stubs won't do. */
10256 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10258 struct ppc_stub_hash_entry *stub_entry;
10259 struct bfd_link_info *info;
10260 struct ppc_link_hash_table *htab;
10264 /* Massage our args to the form they really have. */
10265 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10268 htab = ppc_hash_table (info);
10272 if (stub_entry->stub_type == ppc_stub_plt_call
10273 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10276 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10277 if (off >= (bfd_vma) -2)
10280 if (!htab->elf.dynamic_sections_created
10281 || stub_entry->h == NULL
10282 || stub_entry->h->elf.dynindx == -1)
10284 off += (plt->output_offset
10285 + plt->output_section->vma
10286 - elf_gp (plt->output_section->owner)
10287 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10289 size = plt_stub_size (htab, stub_entry, off);
10290 if (htab->plt_stub_align)
10291 size += plt_stub_pad (htab, stub_entry, off);
10292 if (info->emitrelocations)
10294 stub_entry->stub_sec->reloc_count
10296 + (PPC_HA (off) != 0)
10297 + (htab->plt_static_chain
10298 && PPC_HA (off + 16) == PPC_HA (off)));
10299 stub_entry->stub_sec->flags |= SEC_RELOC;
10304 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10308 off = (stub_entry->target_value
10309 + stub_entry->target_section->output_offset
10310 + stub_entry->target_section->output_section->vma);
10311 off -= (stub_entry->stub_sec->size
10312 + stub_entry->stub_sec->output_offset
10313 + stub_entry->stub_sec->output_section->vma);
10315 /* Reset the stub type from the plt variant in case we now
10316 can reach with a shorter stub. */
10317 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10318 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10321 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10323 r2off = get_r2off (info, stub_entry);
10326 htab->stub_error = TRUE;
10330 if (PPC_HA (r2off) != 0)
10335 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10336 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10338 struct ppc_branch_hash_entry *br_entry;
10340 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10341 stub_entry->root.string + 9,
10343 if (br_entry == NULL)
10345 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10346 stub_entry->root.string);
10347 htab->stub_error = TRUE;
10351 if (br_entry->iter != htab->stub_iteration)
10353 br_entry->iter = htab->stub_iteration;
10354 br_entry->offset = htab->brlt->size;
10355 htab->brlt->size += 8;
10357 if (htab->relbrlt != NULL)
10358 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10359 else if (info->emitrelocations)
10361 htab->brlt->reloc_count += 1;
10362 htab->brlt->flags |= SEC_RELOC;
10366 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10367 off = (br_entry->offset
10368 + htab->brlt->output_offset
10369 + htab->brlt->output_section->vma
10370 - elf_gp (htab->brlt->output_section->owner)
10371 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10373 if (info->emitrelocations)
10375 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10376 stub_entry->stub_sec->flags |= SEC_RELOC;
10379 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10382 if (PPC_HA (off) != 0)
10388 if (PPC_HA (off) != 0)
10391 if (PPC_HA (r2off) != 0)
10395 else if (info->emitrelocations)
10397 stub_entry->stub_sec->reloc_count += 1;
10398 stub_entry->stub_sec->flags |= SEC_RELOC;
10402 stub_entry->stub_sec->size += size;
10406 /* Set up various things so that we can make a list of input sections
10407 for each output section included in the link. Returns -1 on error,
10408 0 when no stubs will be needed, and 1 on success. */
10411 ppc64_elf_setup_section_lists
10412 (struct bfd_link_info *info,
10413 asection *(*add_stub_section) (const char *, asection *),
10414 void (*layout_sections_again) (void))
10417 int top_id, top_index, id;
10419 asection **input_list;
10421 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10425 /* Stash our params away. */
10426 htab->add_stub_section = add_stub_section;
10427 htab->layout_sections_again = layout_sections_again;
10429 if (htab->brlt == NULL)
10432 /* Find the top input section id. */
10433 for (input_bfd = info->input_bfds, top_id = 3;
10435 input_bfd = input_bfd->link_next)
10437 for (section = input_bfd->sections;
10439 section = section->next)
10441 if (top_id < section->id)
10442 top_id = section->id;
10446 htab->top_id = top_id;
10447 amt = sizeof (struct map_stub) * (top_id + 1);
10448 htab->stub_group = bfd_zmalloc (amt);
10449 if (htab->stub_group == NULL)
10452 /* Set toc_off for com, und, abs and ind sections. */
10453 for (id = 0; id < 3; id++)
10454 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10456 /* We can't use output_bfd->section_count here to find the top output
10457 section index as some sections may have been removed, and
10458 strip_excluded_output_sections doesn't renumber the indices. */
10459 for (section = info->output_bfd->sections, top_index = 0;
10461 section = section->next)
10463 if (top_index < section->index)
10464 top_index = section->index;
10467 htab->top_index = top_index;
10468 amt = sizeof (asection *) * (top_index + 1);
10469 input_list = bfd_zmalloc (amt);
10470 htab->input_list = input_list;
10471 if (input_list == NULL)
10477 /* Set up for first pass at multitoc partitioning. */
10480 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10482 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10484 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10485 htab->toc_curr = elf_gp (info->output_bfd);
10486 htab->toc_bfd = NULL;
10487 htab->toc_first_sec = NULL;
10490 /* The linker repeatedly calls this function for each TOC input section
10491 and linker generated GOT section. Group input bfds such that the toc
10492 within a group is less than 64k in size. */
10495 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10497 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10498 bfd_vma addr, off, limit;
10503 if (!htab->second_toc_pass)
10505 /* Keep track of the first .toc or .got section for this input bfd. */
10506 if (htab->toc_bfd != isec->owner)
10508 htab->toc_bfd = isec->owner;
10509 htab->toc_first_sec = isec;
10512 addr = isec->output_offset + isec->output_section->vma;
10513 off = addr - htab->toc_curr;
10514 limit = 0x80008000;
10515 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10517 if (off + isec->size > limit)
10519 addr = (htab->toc_first_sec->output_offset
10520 + htab->toc_first_sec->output_section->vma);
10521 htab->toc_curr = addr;
10524 /* toc_curr is the base address of this toc group. Set elf_gp
10525 for the input section to be the offset relative to the
10526 output toc base plus 0x8000. Making the input elf_gp an
10527 offset allows us to move the toc as a whole without
10528 recalculating input elf_gp. */
10529 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10530 off += TOC_BASE_OFF;
10532 /* Die if someone uses a linker script that doesn't keep input
10533 file .toc and .got together. */
10534 if (elf_gp (isec->owner) != 0
10535 && elf_gp (isec->owner) != off)
10538 elf_gp (isec->owner) = off;
10542 /* During the second pass toc_first_sec points to the start of
10543 a toc group, and toc_curr is used to track the old elf_gp.
10544 We use toc_bfd to ensure we only look at each bfd once. */
10545 if (htab->toc_bfd == isec->owner)
10547 htab->toc_bfd = isec->owner;
10549 if (htab->toc_first_sec == NULL
10550 || htab->toc_curr != elf_gp (isec->owner))
10552 htab->toc_curr = elf_gp (isec->owner);
10553 htab->toc_first_sec = isec;
10555 addr = (htab->toc_first_sec->output_offset
10556 + htab->toc_first_sec->output_section->vma);
10557 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10558 elf_gp (isec->owner) = off;
10563 /* Called via elf_link_hash_traverse to merge GOT entries for global
10567 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10569 if (h->root.type == bfd_link_hash_indirect)
10572 merge_got_entries (&h->got.glist);
10577 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10581 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10583 struct got_entry *gent;
10585 if (h->root.type == bfd_link_hash_indirect)
10588 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10589 if (!gent->is_indirect)
10590 allocate_got (h, (struct bfd_link_info *) inf, gent);
10594 /* Called on the first multitoc pass after the last call to
10595 ppc64_elf_next_toc_section. This function removes duplicate GOT
10599 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10601 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10602 struct bfd *ibfd, *ibfd2;
10603 bfd_boolean done_something;
10605 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10607 if (!htab->do_multi_toc)
10610 /* Merge global sym got entries within a toc group. */
10611 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10613 /* And tlsld_got. */
10614 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10616 struct got_entry *ent, *ent2;
10618 if (!is_ppc64_elf (ibfd))
10621 ent = ppc64_tlsld_got (ibfd);
10622 if (!ent->is_indirect
10623 && ent->got.offset != (bfd_vma) -1)
10625 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10627 if (!is_ppc64_elf (ibfd2))
10630 ent2 = ppc64_tlsld_got (ibfd2);
10631 if (!ent2->is_indirect
10632 && ent2->got.offset != (bfd_vma) -1
10633 && elf_gp (ibfd2) == elf_gp (ibfd))
10635 ent2->is_indirect = TRUE;
10636 ent2->got.ent = ent;
10642 /* Zap sizes of got sections. */
10643 htab->reliplt->rawsize = htab->reliplt->size;
10644 htab->reliplt->size -= htab->got_reli_size;
10645 htab->got_reli_size = 0;
10647 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10649 asection *got, *relgot;
10651 if (!is_ppc64_elf (ibfd))
10654 got = ppc64_elf_tdata (ibfd)->got;
10657 got->rawsize = got->size;
10659 relgot = ppc64_elf_tdata (ibfd)->relgot;
10660 relgot->rawsize = relgot->size;
10665 /* Now reallocate the got, local syms first. We don't need to
10666 allocate section contents again since we never increase size. */
10667 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10669 struct got_entry **lgot_ents;
10670 struct got_entry **end_lgot_ents;
10671 struct plt_entry **local_plt;
10672 struct plt_entry **end_local_plt;
10673 unsigned char *lgot_masks;
10674 bfd_size_type locsymcount;
10675 Elf_Internal_Shdr *symtab_hdr;
10676 asection *s, *srel;
10678 if (!is_ppc64_elf (ibfd))
10681 lgot_ents = elf_local_got_ents (ibfd);
10685 symtab_hdr = &elf_symtab_hdr (ibfd);
10686 locsymcount = symtab_hdr->sh_info;
10687 end_lgot_ents = lgot_ents + locsymcount;
10688 local_plt = (struct plt_entry **) end_lgot_ents;
10689 end_local_plt = local_plt + locsymcount;
10690 lgot_masks = (unsigned char *) end_local_plt;
10691 s = ppc64_elf_tdata (ibfd)->got;
10692 srel = ppc64_elf_tdata (ibfd)->relgot;
10693 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10695 struct got_entry *ent;
10697 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10699 unsigned int num = 1;
10700 ent->got.offset = s->size;
10701 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10703 s->size += num * 8;
10705 srel->size += num * sizeof (Elf64_External_Rela);
10706 else if ((*lgot_masks & PLT_IFUNC) != 0)
10708 htab->reliplt->size
10709 += num * sizeof (Elf64_External_Rela);
10710 htab->got_reli_size
10711 += num * sizeof (Elf64_External_Rela);
10717 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10719 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10721 struct got_entry *ent;
10723 if (!is_ppc64_elf (ibfd))
10726 ent = ppc64_tlsld_got (ibfd);
10727 if (!ent->is_indirect
10728 && ent->got.offset != (bfd_vma) -1)
10730 asection *s = ppc64_elf_tdata (ibfd)->got;
10731 ent->got.offset = s->size;
10735 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10736 srel->size += sizeof (Elf64_External_Rela);
10741 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10742 if (!done_something)
10743 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10747 if (!is_ppc64_elf (ibfd))
10750 got = ppc64_elf_tdata (ibfd)->got;
10753 done_something = got->rawsize != got->size;
10754 if (done_something)
10759 if (done_something)
10760 (*htab->layout_sections_again) ();
10762 /* Set up for second pass over toc sections to recalculate elf_gp
10763 on input sections. */
10764 htab->toc_bfd = NULL;
10765 htab->toc_first_sec = NULL;
10766 htab->second_toc_pass = TRUE;
10767 return done_something;
10770 /* Called after second pass of multitoc partitioning. */
10773 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10775 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10777 /* After the second pass, toc_curr tracks the TOC offset used
10778 for code sections below in ppc64_elf_next_input_section. */
10779 htab->toc_curr = TOC_BASE_OFF;
10782 /* No toc references were found in ISEC. If the code in ISEC makes no
10783 calls, then there's no need to use toc adjusting stubs when branching
10784 into ISEC. Actually, indirect calls from ISEC are OK as they will
10785 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10786 needed, and 2 if a cyclical call-graph was found but no other reason
10787 for a stub was detected. If called from the top level, a return of
10788 2 means the same as a return of 0. */
10791 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10795 /* Mark this section as checked. */
10796 isec->call_check_done = 1;
10798 /* We know none of our code bearing sections will need toc stubs. */
10799 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10802 if (isec->size == 0)
10805 if (isec->output_section == NULL)
10809 if (isec->reloc_count != 0)
10811 Elf_Internal_Rela *relstart, *rel;
10812 Elf_Internal_Sym *local_syms;
10813 struct ppc_link_hash_table *htab;
10815 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10816 info->keep_memory);
10817 if (relstart == NULL)
10820 /* Look for branches to outside of this section. */
10822 htab = ppc_hash_table (info);
10826 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10828 enum elf_ppc64_reloc_type r_type;
10829 unsigned long r_symndx;
10830 struct elf_link_hash_entry *h;
10831 struct ppc_link_hash_entry *eh;
10832 Elf_Internal_Sym *sym;
10834 struct _opd_sec_data *opd;
10838 r_type = ELF64_R_TYPE (rel->r_info);
10839 if (r_type != R_PPC64_REL24
10840 && r_type != R_PPC64_REL14
10841 && r_type != R_PPC64_REL14_BRTAKEN
10842 && r_type != R_PPC64_REL14_BRNTAKEN)
10845 r_symndx = ELF64_R_SYM (rel->r_info);
10846 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10853 /* Calls to dynamic lib functions go through a plt call stub
10855 eh = (struct ppc_link_hash_entry *) h;
10857 && (eh->elf.plt.plist != NULL
10859 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10865 if (sym_sec == NULL)
10866 /* Ignore other undefined symbols. */
10869 /* Assume branches to other sections not included in the
10870 link need stubs too, to cover -R and absolute syms. */
10871 if (sym_sec->output_section == NULL)
10878 sym_value = sym->st_value;
10881 if (h->root.type != bfd_link_hash_defined
10882 && h->root.type != bfd_link_hash_defweak)
10884 sym_value = h->root.u.def.value;
10886 sym_value += rel->r_addend;
10888 /* If this branch reloc uses an opd sym, find the code section. */
10889 opd = get_opd_info (sym_sec);
10892 if (h == NULL && opd->adjust != NULL)
10896 adjust = opd->adjust[sym->st_value / 8];
10898 /* Assume deleted functions won't ever be called. */
10900 sym_value += adjust;
10903 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10904 if (dest == (bfd_vma) -1)
10909 + sym_sec->output_offset
10910 + sym_sec->output_section->vma);
10912 /* Ignore branch to self. */
10913 if (sym_sec == isec)
10916 /* If the called function uses the toc, we need a stub. */
10917 if (sym_sec->has_toc_reloc
10918 || sym_sec->makes_toc_func_call)
10924 /* Assume any branch that needs a long branch stub might in fact
10925 need a plt_branch stub. A plt_branch stub uses r2. */
10926 else if (dest - (isec->output_offset
10927 + isec->output_section->vma
10928 + rel->r_offset) + (1 << 25) >= (2 << 25))
10934 /* If calling back to a section in the process of being
10935 tested, we can't say for sure that no toc adjusting stubs
10936 are needed, so don't return zero. */
10937 else if (sym_sec->call_check_in_progress)
10940 /* Branches to another section that itself doesn't have any TOC
10941 references are OK. Recursively call ourselves to check. */
10942 else if (!sym_sec->call_check_done)
10946 /* Mark current section as indeterminate, so that other
10947 sections that call back to current won't be marked as
10949 isec->call_check_in_progress = 1;
10950 recur = toc_adjusting_stub_needed (info, sym_sec);
10951 isec->call_check_in_progress = 0;
10962 if (local_syms != NULL
10963 && (elf_symtab_hdr (isec->owner).contents
10964 != (unsigned char *) local_syms))
10966 if (elf_section_data (isec)->relocs != relstart)
10971 && isec->map_head.s != NULL
10972 && (strcmp (isec->output_section->name, ".init") == 0
10973 || strcmp (isec->output_section->name, ".fini") == 0))
10975 if (isec->map_head.s->has_toc_reloc
10976 || isec->map_head.s->makes_toc_func_call)
10978 else if (!isec->map_head.s->call_check_done)
10981 isec->call_check_in_progress = 1;
10982 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
10983 isec->call_check_in_progress = 0;
10990 isec->makes_toc_func_call = 1;
10995 /* The linker repeatedly calls this function for each input section,
10996 in the order that input sections are linked into output sections.
10997 Build lists of input sections to determine groupings between which
10998 we may insert linker stubs. */
11001 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11003 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11008 if ((isec->output_section->flags & SEC_CODE) != 0
11009 && isec->output_section->index <= htab->top_index)
11011 asection **list = htab->input_list + isec->output_section->index;
11012 /* Steal the link_sec pointer for our list. */
11013 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11014 /* This happens to make the list in reverse order,
11015 which is what we want. */
11016 PREV_SEC (isec) = *list;
11020 if (htab->multi_toc_needed)
11022 /* If a code section has a function that uses the TOC then we need
11023 to use the right TOC (obviously). Also, make sure that .opd gets
11024 the correct TOC value for R_PPC64_TOC relocs that don't have or
11025 can't find their function symbol (shouldn't ever happen now).
11026 Also specially treat .fixup for the linux kernel. .fixup
11027 contains branches, but only back to the function that hit an
11029 if (isec->has_toc_reloc
11030 || (isec->flags & SEC_CODE) == 0
11031 || strcmp (isec->name, ".fixup") == 0)
11033 if (elf_gp (isec->owner) != 0)
11034 htab->toc_curr = elf_gp (isec->owner);
11038 if (!isec->call_check_done
11039 && toc_adjusting_stub_needed (info, isec) < 0)
11041 /* If we make a local call from this section, ie. a branch
11042 without a following nop, then we have no place to put a
11043 toc restoring insn. We must use the same toc group as
11045 Testing makes_toc_func_call actually tests for *any*
11046 calls to functions that need a good toc pointer. A more
11047 precise test would be better, as this one will set
11048 incorrect values for pasted .init/.fini fragments.
11049 (Fixed later in check_pasted_section.) */
11050 if (isec->makes_toc_func_call
11051 && elf_gp (isec->owner) != 0)
11052 htab->toc_curr = elf_gp (isec->owner);
11056 /* Functions that don't use the TOC can belong in any TOC group.
11057 Use the last TOC base. */
11058 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11062 /* Check that all .init and .fini sections use the same toc, if they
11063 have toc relocs. */
11066 check_pasted_section (struct bfd_link_info *info, const char *name)
11068 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11072 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11073 bfd_vma toc_off = 0;
11076 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11077 if (i->has_toc_reloc)
11080 toc_off = htab->stub_group[i->id].toc_off;
11081 else if (toc_off != htab->stub_group[i->id].toc_off)
11086 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11087 if (i->makes_toc_func_call)
11089 toc_off = htab->stub_group[i->id].toc_off;
11093 /* Make sure the whole pasted function uses the same toc offset. */
11095 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11096 htab->stub_group[i->id].toc_off = toc_off;
11102 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11104 return (check_pasted_section (info, ".init")
11105 & check_pasted_section (info, ".fini"));
11108 /* See whether we can group stub sections together. Grouping stub
11109 sections may result in fewer stubs. More importantly, we need to
11110 put all .init* and .fini* stubs at the beginning of the .init or
11111 .fini output sections respectively, because glibc splits the
11112 _init and _fini functions into multiple parts. Putting a stub in
11113 the middle of a function is not a good idea. */
11116 group_sections (struct ppc_link_hash_table *htab,
11117 bfd_size_type stub_group_size,
11118 bfd_boolean stubs_always_before_branch)
11121 bfd_size_type stub14_group_size;
11122 bfd_boolean suppress_size_errors;
11124 suppress_size_errors = FALSE;
11125 stub14_group_size = stub_group_size;
11126 if (stub_group_size == 1)
11128 /* Default values. */
11129 if (stubs_always_before_branch)
11131 stub_group_size = 0x1e00000;
11132 stub14_group_size = 0x7800;
11136 stub_group_size = 0x1c00000;
11137 stub14_group_size = 0x7000;
11139 suppress_size_errors = TRUE;
11142 list = htab->input_list + htab->top_index;
11145 asection *tail = *list;
11146 while (tail != NULL)
11150 bfd_size_type total;
11151 bfd_boolean big_sec;
11155 total = tail->size;
11156 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11157 && ppc64_elf_section_data (tail)->has_14bit_branch
11158 ? stub14_group_size : stub_group_size);
11159 if (big_sec && !suppress_size_errors)
11160 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11161 tail->owner, tail);
11162 curr_toc = htab->stub_group[tail->id].toc_off;
11164 while ((prev = PREV_SEC (curr)) != NULL
11165 && ((total += curr->output_offset - prev->output_offset)
11166 < (ppc64_elf_section_data (prev) != NULL
11167 && ppc64_elf_section_data (prev)->has_14bit_branch
11168 ? stub14_group_size : stub_group_size))
11169 && htab->stub_group[prev->id].toc_off == curr_toc)
11172 /* OK, the size from the start of CURR to the end is less
11173 than stub_group_size and thus can be handled by one stub
11174 section. (or the tail section is itself larger than
11175 stub_group_size, in which case we may be toast.) We
11176 should really be keeping track of the total size of stubs
11177 added here, as stubs contribute to the final output
11178 section size. That's a little tricky, and this way will
11179 only break if stubs added make the total size more than
11180 2^25, ie. for the default stub_group_size, if stubs total
11181 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11184 prev = PREV_SEC (tail);
11185 /* Set up this stub group. */
11186 htab->stub_group[tail->id].link_sec = curr;
11188 while (tail != curr && (tail = prev) != NULL);
11190 /* But wait, there's more! Input sections up to stub_group_size
11191 bytes before the stub section can be handled by it too.
11192 Don't do this if we have a really large section after the
11193 stubs, as adding more stubs increases the chance that
11194 branches may not reach into the stub section. */
11195 if (!stubs_always_before_branch && !big_sec)
11198 while (prev != NULL
11199 && ((total += tail->output_offset - prev->output_offset)
11200 < (ppc64_elf_section_data (prev) != NULL
11201 && ppc64_elf_section_data (prev)->has_14bit_branch
11202 ? stub14_group_size : stub_group_size))
11203 && htab->stub_group[prev->id].toc_off == curr_toc)
11206 prev = PREV_SEC (tail);
11207 htab->stub_group[tail->id].link_sec = curr;
11213 while (list-- != htab->input_list);
11214 free (htab->input_list);
11218 static const unsigned char glink_eh_frame_cie[] =
11220 0, 0, 0, 16, /* length. */
11221 0, 0, 0, 0, /* id. */
11222 1, /* CIE version. */
11223 'z', 'R', 0, /* Augmentation string. */
11224 4, /* Code alignment. */
11225 0x78, /* Data alignment. */
11227 1, /* Augmentation size. */
11228 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11229 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11232 /* Stripping output sections is normally done before dynamic section
11233 symbols have been allocated. This function is called later, and
11234 handles cases like htab->brlt which is mapped to its own output
11238 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11240 if (isec->size == 0
11241 && isec->output_section->size == 0
11242 && !bfd_section_removed_from_list (info->output_bfd,
11243 isec->output_section)
11244 && elf_section_data (isec->output_section)->dynindx == 0)
11246 isec->output_section->flags |= SEC_EXCLUDE;
11247 bfd_section_list_remove (info->output_bfd, isec->output_section);
11248 info->output_bfd->section_count--;
11252 /* Determine and set the size of the stub section for a final link.
11254 The basic idea here is to examine all the relocations looking for
11255 PC-relative calls to a target that is unreachable with a "bl"
11259 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11260 bfd_boolean plt_static_chain, int plt_thread_safe,
11261 int plt_stub_align)
11263 bfd_size_type stub_group_size;
11264 bfd_boolean stubs_always_before_branch;
11265 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11270 htab->plt_static_chain = plt_static_chain;
11271 htab->plt_stub_align = plt_stub_align;
11272 if (plt_thread_safe == -1)
11274 const char *const thread_starter[] =
11278 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11280 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11281 "mq_notify", "create_timer",
11285 "GOMP_parallel_start",
11286 "GOMP_parallel_loop_static_start",
11287 "GOMP_parallel_loop_dynamic_start",
11288 "GOMP_parallel_loop_guided_start",
11289 "GOMP_parallel_loop_runtime_start",
11290 "GOMP_parallel_sections_start",
11294 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11296 struct elf_link_hash_entry *h;
11297 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11298 FALSE, FALSE, TRUE);
11299 plt_thread_safe = h != NULL && h->ref_regular;
11300 if (plt_thread_safe)
11304 htab->plt_thread_safe = plt_thread_safe;
11305 stubs_always_before_branch = group_size < 0;
11306 if (group_size < 0)
11307 stub_group_size = -group_size;
11309 stub_group_size = group_size;
11311 group_sections (htab, stub_group_size, stubs_always_before_branch);
11316 unsigned int bfd_indx;
11317 asection *stub_sec;
11319 htab->stub_iteration += 1;
11321 for (input_bfd = info->input_bfds, bfd_indx = 0;
11323 input_bfd = input_bfd->link_next, bfd_indx++)
11325 Elf_Internal_Shdr *symtab_hdr;
11327 Elf_Internal_Sym *local_syms = NULL;
11329 if (!is_ppc64_elf (input_bfd))
11332 /* We'll need the symbol table in a second. */
11333 symtab_hdr = &elf_symtab_hdr (input_bfd);
11334 if (symtab_hdr->sh_info == 0)
11337 /* Walk over each section attached to the input bfd. */
11338 for (section = input_bfd->sections;
11340 section = section->next)
11342 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11344 /* If there aren't any relocs, then there's nothing more
11346 if ((section->flags & SEC_RELOC) == 0
11347 || (section->flags & SEC_ALLOC) == 0
11348 || (section->flags & SEC_LOAD) == 0
11349 || (section->flags & SEC_CODE) == 0
11350 || section->reloc_count == 0)
11353 /* If this section is a link-once section that will be
11354 discarded, then don't create any stubs. */
11355 if (section->output_section == NULL
11356 || section->output_section->owner != info->output_bfd)
11359 /* Get the relocs. */
11361 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11362 info->keep_memory);
11363 if (internal_relocs == NULL)
11364 goto error_ret_free_local;
11366 /* Now examine each relocation. */
11367 irela = internal_relocs;
11368 irelaend = irela + section->reloc_count;
11369 for (; irela < irelaend; irela++)
11371 enum elf_ppc64_reloc_type r_type;
11372 unsigned int r_indx;
11373 enum ppc_stub_type stub_type;
11374 struct ppc_stub_hash_entry *stub_entry;
11375 asection *sym_sec, *code_sec;
11376 bfd_vma sym_value, code_value;
11377 bfd_vma destination;
11378 bfd_boolean ok_dest;
11379 struct ppc_link_hash_entry *hash;
11380 struct ppc_link_hash_entry *fdh;
11381 struct elf_link_hash_entry *h;
11382 Elf_Internal_Sym *sym;
11384 const asection *id_sec;
11385 struct _opd_sec_data *opd;
11386 struct plt_entry *plt_ent;
11388 r_type = ELF64_R_TYPE (irela->r_info);
11389 r_indx = ELF64_R_SYM (irela->r_info);
11391 if (r_type >= R_PPC64_max)
11393 bfd_set_error (bfd_error_bad_value);
11394 goto error_ret_free_internal;
11397 /* Only look for stubs on branch instructions. */
11398 if (r_type != R_PPC64_REL24
11399 && r_type != R_PPC64_REL14
11400 && r_type != R_PPC64_REL14_BRTAKEN
11401 && r_type != R_PPC64_REL14_BRNTAKEN)
11404 /* Now determine the call target, its name, value,
11406 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11407 r_indx, input_bfd))
11408 goto error_ret_free_internal;
11409 hash = (struct ppc_link_hash_entry *) h;
11416 sym_value = sym->st_value;
11419 else if (hash->elf.root.type == bfd_link_hash_defined
11420 || hash->elf.root.type == bfd_link_hash_defweak)
11422 sym_value = hash->elf.root.u.def.value;
11423 if (sym_sec->output_section != NULL)
11426 else if (hash->elf.root.type == bfd_link_hash_undefweak
11427 || hash->elf.root.type == bfd_link_hash_undefined)
11429 /* Recognise an old ABI func code entry sym, and
11430 use the func descriptor sym instead if it is
11432 if (hash->elf.root.root.string[0] == '.'
11433 && (fdh = lookup_fdh (hash, htab)) != NULL)
11435 if (fdh->elf.root.type == bfd_link_hash_defined
11436 || fdh->elf.root.type == bfd_link_hash_defweak)
11438 sym_sec = fdh->elf.root.u.def.section;
11439 sym_value = fdh->elf.root.u.def.value;
11440 if (sym_sec->output_section != NULL)
11449 bfd_set_error (bfd_error_bad_value);
11450 goto error_ret_free_internal;
11456 sym_value += irela->r_addend;
11457 destination = (sym_value
11458 + sym_sec->output_offset
11459 + sym_sec->output_section->vma);
11462 code_sec = sym_sec;
11463 code_value = sym_value;
11464 opd = get_opd_info (sym_sec);
11469 if (hash == NULL && opd->adjust != NULL)
11471 long adjust = opd->adjust[sym_value / 8];
11474 code_value += adjust;
11475 sym_value += adjust;
11477 dest = opd_entry_value (sym_sec, sym_value,
11478 &code_sec, &code_value);
11479 if (dest != (bfd_vma) -1)
11481 destination = dest;
11484 /* Fixup old ABI sym to point at code
11486 hash->elf.root.type = bfd_link_hash_defweak;
11487 hash->elf.root.u.def.section = code_sec;
11488 hash->elf.root.u.def.value = code_value;
11493 /* Determine what (if any) linker stub is needed. */
11495 stub_type = ppc_type_of_stub (section, irela, &hash,
11496 &plt_ent, destination);
11498 if (stub_type != ppc_stub_plt_call)
11500 /* Check whether we need a TOC adjusting stub.
11501 Since the linker pastes together pieces from
11502 different object files when creating the
11503 _init and _fini functions, it may be that a
11504 call to what looks like a local sym is in
11505 fact a call needing a TOC adjustment. */
11506 if (code_sec != NULL
11507 && code_sec->output_section != NULL
11508 && (htab->stub_group[code_sec->id].toc_off
11509 != htab->stub_group[section->id].toc_off)
11510 && (code_sec->has_toc_reloc
11511 || code_sec->makes_toc_func_call))
11512 stub_type = ppc_stub_long_branch_r2off;
11515 if (stub_type == ppc_stub_none)
11518 /* __tls_get_addr calls might be eliminated. */
11519 if (stub_type != ppc_stub_plt_call
11521 && (hash == htab->tls_get_addr
11522 || hash == htab->tls_get_addr_fd)
11523 && section->has_tls_reloc
11524 && irela != internal_relocs)
11526 /* Get tls info. */
11527 unsigned char *tls_mask;
11529 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11530 irela - 1, input_bfd))
11531 goto error_ret_free_internal;
11532 if (*tls_mask != 0)
11536 if (stub_type == ppc_stub_plt_call
11537 && irela + 1 < irelaend
11538 && irela[1].r_offset == irela->r_offset + 4
11539 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
11541 if (!tocsave_find (htab, INSERT,
11542 &local_syms, irela + 1, input_bfd))
11543 goto error_ret_free_internal;
11545 else if (stub_type == ppc_stub_plt_call)
11546 stub_type = ppc_stub_plt_call_r2save;
11548 /* Support for grouping stub sections. */
11549 id_sec = htab->stub_group[section->id].link_sec;
11551 /* Get the name of this stub. */
11552 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11554 goto error_ret_free_internal;
11556 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11557 stub_name, FALSE, FALSE);
11558 if (stub_entry != NULL)
11560 /* The proper stub has already been created. */
11562 if (stub_type == ppc_stub_plt_call_r2save)
11563 stub_entry->stub_type = stub_type;
11567 stub_entry = ppc_add_stub (stub_name, section, info);
11568 if (stub_entry == NULL)
11571 error_ret_free_internal:
11572 if (elf_section_data (section)->relocs == NULL)
11573 free (internal_relocs);
11574 error_ret_free_local:
11575 if (local_syms != NULL
11576 && (symtab_hdr->contents
11577 != (unsigned char *) local_syms))
11582 stub_entry->stub_type = stub_type;
11583 if (stub_type != ppc_stub_plt_call
11584 && stub_type != ppc_stub_plt_call_r2save)
11586 stub_entry->target_value = code_value;
11587 stub_entry->target_section = code_sec;
11591 stub_entry->target_value = sym_value;
11592 stub_entry->target_section = sym_sec;
11594 stub_entry->h = hash;
11595 stub_entry->plt_ent = plt_ent;
11596 stub_entry->addend = irela->r_addend;
11598 if (stub_entry->h != NULL)
11599 htab->stub_globals += 1;
11602 /* We're done with the internal relocs, free them. */
11603 if (elf_section_data (section)->relocs != internal_relocs)
11604 free (internal_relocs);
11607 if (local_syms != NULL
11608 && symtab_hdr->contents != (unsigned char *) local_syms)
11610 if (!info->keep_memory)
11613 symtab_hdr->contents = (unsigned char *) local_syms;
11617 /* We may have added some stubs. Find out the new size of the
11619 for (stub_sec = htab->stub_bfd->sections;
11621 stub_sec = stub_sec->next)
11622 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11624 stub_sec->rawsize = stub_sec->size;
11625 stub_sec->size = 0;
11626 stub_sec->reloc_count = 0;
11627 stub_sec->flags &= ~SEC_RELOC;
11630 htab->brlt->size = 0;
11631 htab->brlt->reloc_count = 0;
11632 htab->brlt->flags &= ~SEC_RELOC;
11633 if (htab->relbrlt != NULL)
11634 htab->relbrlt->size = 0;
11636 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11638 if (info->emitrelocations
11639 && htab->glink != NULL && htab->glink->size != 0)
11641 htab->glink->reloc_count = 1;
11642 htab->glink->flags |= SEC_RELOC;
11645 if (htab->glink_eh_frame != NULL
11646 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
11647 && (htab->glink_eh_frame->flags & SEC_EXCLUDE) == 0)
11649 bfd_size_type size = 0;
11651 for (stub_sec = htab->stub_bfd->sections;
11653 stub_sec = stub_sec->next)
11654 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11656 if (htab->glink != NULL && htab->glink->size != 0)
11659 size += sizeof (glink_eh_frame_cie);
11660 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11661 htab->glink_eh_frame->size = size;
11664 if (htab->plt_stub_align != 0)
11665 for (stub_sec = htab->stub_bfd->sections;
11667 stub_sec = stub_sec->next)
11668 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11669 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
11670 & (-1 << htab->plt_stub_align));
11672 for (stub_sec = htab->stub_bfd->sections;
11674 stub_sec = stub_sec->next)
11675 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11676 && stub_sec->rawsize != stub_sec->size)
11679 /* Exit from this loop when no stubs have been added, and no stubs
11680 have changed size. */
11681 if (stub_sec == NULL
11682 && (htab->glink_eh_frame == NULL
11683 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
11686 /* Ask the linker to do its stuff. */
11687 (*htab->layout_sections_again) ();
11690 maybe_strip_output (info, htab->brlt);
11691 if (htab->glink_eh_frame != NULL)
11692 maybe_strip_output (info, htab->glink_eh_frame);
11697 /* Called after we have determined section placement. If sections
11698 move, we'll be called again. Provide a value for TOCstart. */
11701 ppc64_elf_toc (bfd *obfd)
11706 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11707 order. The TOC starts where the first of these sections starts. */
11708 s = bfd_get_section_by_name (obfd, ".got");
11709 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11710 s = bfd_get_section_by_name (obfd, ".toc");
11711 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11712 s = bfd_get_section_by_name (obfd, ".tocbss");
11713 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11714 s = bfd_get_section_by_name (obfd, ".plt");
11715 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11717 /* This may happen for
11718 o references to TOC base (SYM@toc / TOC[tc0]) without a
11720 o bad linker script
11721 o --gc-sections and empty TOC sections
11723 FIXME: Warn user? */
11725 /* Look for a likely section. We probably won't even be
11727 for (s = obfd->sections; s != NULL; s = s->next)
11728 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11730 == (SEC_ALLOC | SEC_SMALL_DATA))
11733 for (s = obfd->sections; s != NULL; s = s->next)
11734 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11735 == (SEC_ALLOC | SEC_SMALL_DATA))
11738 for (s = obfd->sections; s != NULL; s = s->next)
11739 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11743 for (s = obfd->sections; s != NULL; s = s->next)
11744 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11750 TOCstart = s->output_section->vma + s->output_offset;
11755 /* Build all the stubs associated with the current output file.
11756 The stubs are kept in a hash table attached to the main linker
11757 hash table. This function is called via gldelf64ppc_finish. */
11760 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11761 struct bfd_link_info *info,
11764 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11765 asection *stub_sec;
11767 int stub_sec_count = 0;
11772 htab->emit_stub_syms = emit_stub_syms;
11774 /* Allocate memory to hold the linker stubs. */
11775 for (stub_sec = htab->stub_bfd->sections;
11777 stub_sec = stub_sec->next)
11778 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11779 && stub_sec->size != 0)
11781 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11782 if (stub_sec->contents == NULL)
11784 /* We want to check that built size is the same as calculated
11785 size. rawsize is a convenient location to use. */
11786 stub_sec->rawsize = stub_sec->size;
11787 stub_sec->size = 0;
11790 if (htab->glink != NULL && htab->glink->size != 0)
11795 /* Build the .glink plt call stub. */
11796 if (htab->emit_stub_syms)
11798 struct elf_link_hash_entry *h;
11799 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11800 TRUE, FALSE, FALSE);
11803 if (h->root.type == bfd_link_hash_new)
11805 h->root.type = bfd_link_hash_defined;
11806 h->root.u.def.section = htab->glink;
11807 h->root.u.def.value = 8;
11808 h->ref_regular = 1;
11809 h->def_regular = 1;
11810 h->ref_regular_nonweak = 1;
11811 h->forced_local = 1;
11815 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11816 if (info->emitrelocations)
11818 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11821 r->r_offset = (htab->glink->output_offset
11822 + htab->glink->output_section->vma);
11823 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11824 r->r_addend = plt0;
11826 p = htab->glink->contents;
11827 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11828 bfd_put_64 (htab->glink->owner, plt0, p);
11830 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11832 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11834 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11836 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11838 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11840 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11842 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11844 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11846 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11848 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11850 bfd_put_32 (htab->glink->owner, BCTR, p);
11852 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11854 bfd_put_32 (htab->glink->owner, NOP, p);
11858 /* Build the .glink lazy link call stubs. */
11860 while (p < htab->glink->contents + htab->glink->size)
11864 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11869 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11871 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11874 bfd_put_32 (htab->glink->owner,
11875 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11879 htab->glink->rawsize = p - htab->glink->contents;
11882 if (htab->brlt->size != 0)
11884 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11886 if (htab->brlt->contents == NULL)
11889 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11891 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11892 htab->relbrlt->size);
11893 if (htab->relbrlt->contents == NULL)
11897 if (htab->glink_eh_frame != NULL
11898 && htab->glink_eh_frame->size != 0)
11902 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
11905 htab->glink_eh_frame->contents = p;
11907 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11909 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
11910 /* CIE length (rewrite in case little-endian). */
11911 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
11912 p += sizeof (glink_eh_frame_cie);
11914 for (stub_sec = htab->stub_bfd->sections;
11916 stub_sec = stub_sec->next)
11917 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11920 bfd_put_32 (htab->elf.dynobj, 16, p);
11923 val = p - htab->glink_eh_frame->contents;
11924 bfd_put_32 (htab->elf.dynobj, val, p);
11926 /* Offset to stub section. */
11927 val = (stub_sec->output_section->vma
11928 + stub_sec->output_offset);
11929 val -= (htab->glink_eh_frame->output_section->vma
11930 + htab->glink_eh_frame->output_offset);
11931 val -= p - htab->glink_eh_frame->contents;
11932 if (val + 0x80000000 > 0xffffffff)
11934 info->callbacks->einfo
11935 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11939 bfd_put_32 (htab->elf.dynobj, val, p);
11941 /* stub section size. */
11942 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
11944 /* Augmentation. */
11949 if (htab->glink != NULL && htab->glink->size != 0)
11952 bfd_put_32 (htab->elf.dynobj, 20, p);
11955 val = p - htab->glink_eh_frame->contents;
11956 bfd_put_32 (htab->elf.dynobj, val, p);
11958 /* Offset to .glink. */
11959 val = (htab->glink->output_section->vma
11960 + htab->glink->output_offset
11962 val -= (htab->glink_eh_frame->output_section->vma
11963 + htab->glink_eh_frame->output_offset);
11964 val -= p - htab->glink_eh_frame->contents;
11965 if (val + 0x80000000 > 0xffffffff)
11967 info->callbacks->einfo
11968 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11969 htab->glink->name);
11972 bfd_put_32 (htab->elf.dynobj, val, p);
11975 bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
11977 /* Augmentation. */
11980 *p++ = DW_CFA_advance_loc + 1;
11981 *p++ = DW_CFA_register;
11984 *p++ = DW_CFA_advance_loc + 4;
11985 *p++ = DW_CFA_restore_extended;
11988 htab->glink_eh_frame->size = p - htab->glink_eh_frame->contents;
11991 /* Build the stubs as directed by the stub hash table. */
11992 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
11994 if (htab->relbrlt != NULL)
11995 htab->relbrlt->reloc_count = 0;
11997 if (htab->plt_stub_align != 0)
11998 for (stub_sec = htab->stub_bfd->sections;
12000 stub_sec = stub_sec->next)
12001 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12002 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12003 & (-1 << htab->plt_stub_align));
12005 for (stub_sec = htab->stub_bfd->sections;
12007 stub_sec = stub_sec->next)
12008 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12010 stub_sec_count += 1;
12011 if (stub_sec->rawsize != stub_sec->size)
12015 if (stub_sec != NULL
12016 || htab->glink->rawsize != htab->glink->size
12017 || (htab->glink_eh_frame != NULL
12018 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12020 htab->stub_error = TRUE;
12021 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12024 if (htab->stub_error)
12029 *stats = bfd_malloc (500);
12030 if (*stats == NULL)
12033 sprintf (*stats, _("linker stubs in %u group%s\n"
12035 " toc adjust %lu\n"
12036 " long branch %lu\n"
12037 " long toc adj %lu\n"
12039 " plt call toc %lu"),
12041 stub_sec_count == 1 ? "" : "s",
12042 htab->stub_count[ppc_stub_long_branch - 1],
12043 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12044 htab->stub_count[ppc_stub_plt_branch - 1],
12045 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12046 htab->stub_count[ppc_stub_plt_call - 1],
12047 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12052 /* This function undoes the changes made by add_symbol_adjust. */
12055 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12057 struct ppc_link_hash_entry *eh;
12059 if (h->root.type == bfd_link_hash_indirect)
12062 eh = (struct ppc_link_hash_entry *) h;
12063 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12066 eh->elf.root.type = bfd_link_hash_undefined;
12071 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12073 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12076 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12079 /* What to do when ld finds relocations against symbols defined in
12080 discarded sections. */
12082 static unsigned int
12083 ppc64_elf_action_discarded (asection *sec)
12085 if (strcmp (".opd", sec->name) == 0)
12088 if (strcmp (".toc", sec->name) == 0)
12091 if (strcmp (".toc1", sec->name) == 0)
12094 return _bfd_elf_default_action_discarded (sec);
12097 /* The RELOCATE_SECTION function is called by the ELF backend linker
12098 to handle the relocations for a section.
12100 The relocs are always passed as Rela structures; if the section
12101 actually uses Rel structures, the r_addend field will always be
12104 This function is responsible for adjust the section contents as
12105 necessary, and (if using Rela relocs and generating a
12106 relocatable output file) adjusting the reloc addend as
12109 This function does not have to worry about setting the reloc
12110 address or the reloc symbol index.
12112 LOCAL_SYMS is a pointer to the swapped in local symbols.
12114 LOCAL_SECTIONS is an array giving the section in the input file
12115 corresponding to the st_shndx field of each local symbol.
12117 The global hash table entry for the global symbols can be found
12118 via elf_sym_hashes (input_bfd).
12120 When generating relocatable output, this function must handle
12121 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12122 going to be the section symbol corresponding to the output
12123 section, which means that the addend must be adjusted
12127 ppc64_elf_relocate_section (bfd *output_bfd,
12128 struct bfd_link_info *info,
12130 asection *input_section,
12131 bfd_byte *contents,
12132 Elf_Internal_Rela *relocs,
12133 Elf_Internal_Sym *local_syms,
12134 asection **local_sections)
12136 struct ppc_link_hash_table *htab;
12137 Elf_Internal_Shdr *symtab_hdr;
12138 struct elf_link_hash_entry **sym_hashes;
12139 Elf_Internal_Rela *rel;
12140 Elf_Internal_Rela *relend;
12141 Elf_Internal_Rela outrel;
12143 struct got_entry **local_got_ents;
12145 bfd_boolean ret = TRUE;
12146 bfd_boolean is_opd;
12147 /* Assume 'at' branch hints. */
12148 bfd_boolean is_isa_v2 = TRUE;
12149 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12151 /* Initialize howto table if needed. */
12152 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12155 htab = ppc_hash_table (info);
12159 /* Don't relocate stub sections. */
12160 if (input_section->owner == htab->stub_bfd)
12163 BFD_ASSERT (is_ppc64_elf (input_bfd));
12165 local_got_ents = elf_local_got_ents (input_bfd);
12166 TOCstart = elf_gp (output_bfd);
12167 symtab_hdr = &elf_symtab_hdr (input_bfd);
12168 sym_hashes = elf_sym_hashes (input_bfd);
12169 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12172 relend = relocs + input_section->reloc_count;
12173 for (; rel < relend; rel++)
12175 enum elf_ppc64_reloc_type r_type;
12176 bfd_vma addend, orig_addend;
12177 bfd_reloc_status_type r;
12178 Elf_Internal_Sym *sym;
12180 struct elf_link_hash_entry *h_elf;
12181 struct ppc_link_hash_entry *h;
12182 struct ppc_link_hash_entry *fdh;
12183 const char *sym_name;
12184 unsigned long r_symndx, toc_symndx;
12185 bfd_vma toc_addend;
12186 unsigned char tls_mask, tls_gd, tls_type;
12187 unsigned char sym_type;
12188 bfd_vma relocation;
12189 bfd_boolean unresolved_reloc;
12190 bfd_boolean warned;
12193 struct ppc_stub_hash_entry *stub_entry;
12194 bfd_vma max_br_offset;
12197 r_type = ELF64_R_TYPE (rel->r_info);
12198 r_symndx = ELF64_R_SYM (rel->r_info);
12200 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12201 symbol of the previous ADDR64 reloc. The symbol gives us the
12202 proper TOC base to use. */
12203 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12205 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12207 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12213 unresolved_reloc = FALSE;
12215 orig_addend = rel->r_addend;
12217 if (r_symndx < symtab_hdr->sh_info)
12219 /* It's a local symbol. */
12220 struct _opd_sec_data *opd;
12222 sym = local_syms + r_symndx;
12223 sec = local_sections[r_symndx];
12224 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12225 sym_type = ELF64_ST_TYPE (sym->st_info);
12226 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12227 opd = get_opd_info (sec);
12228 if (opd != NULL && opd->adjust != NULL)
12230 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12235 /* If this is a relocation against the opd section sym
12236 and we have edited .opd, adjust the reloc addend so
12237 that ld -r and ld --emit-relocs output is correct.
12238 If it is a reloc against some other .opd symbol,
12239 then the symbol value will be adjusted later. */
12240 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12241 rel->r_addend += adjust;
12243 relocation += adjust;
12249 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12250 r_symndx, symtab_hdr, sym_hashes,
12251 h_elf, sec, relocation,
12252 unresolved_reloc, warned);
12253 sym_name = h_elf->root.root.string;
12254 sym_type = h_elf->type;
12256 h = (struct ppc_link_hash_entry *) h_elf;
12258 if (sec != NULL && elf_discarded_section (sec))
12259 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
12261 ppc64_elf_howto_table[r_type],
12264 if (info->relocatable)
12267 /* TLS optimizations. Replace instruction sequences and relocs
12268 based on information we collected in tls_optimize. We edit
12269 RELOCS so that --emit-relocs will output something sensible
12270 for the final instruction stream. */
12275 tls_mask = h->tls_mask;
12276 else if (local_got_ents != NULL)
12278 struct plt_entry **local_plt = (struct plt_entry **)
12279 (local_got_ents + symtab_hdr->sh_info);
12280 unsigned char *lgot_masks = (unsigned char *)
12281 (local_plt + symtab_hdr->sh_info);
12282 tls_mask = lgot_masks[r_symndx];
12285 && (r_type == R_PPC64_TLS
12286 || r_type == R_PPC64_TLSGD
12287 || r_type == R_PPC64_TLSLD))
12289 /* Check for toc tls entries. */
12290 unsigned char *toc_tls;
12292 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12293 &local_syms, rel, input_bfd))
12297 tls_mask = *toc_tls;
12300 /* Check that tls relocs are used with tls syms, and non-tls
12301 relocs are used with non-tls syms. */
12302 if (r_symndx != STN_UNDEF
12303 && r_type != R_PPC64_NONE
12305 || h->elf.root.type == bfd_link_hash_defined
12306 || h->elf.root.type == bfd_link_hash_defweak)
12307 && (IS_PPC64_TLS_RELOC (r_type)
12308 != (sym_type == STT_TLS
12309 || (sym_type == STT_SECTION
12310 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
12313 && (r_type == R_PPC64_TLS
12314 || r_type == R_PPC64_TLSGD
12315 || r_type == R_PPC64_TLSLD))
12316 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12319 info->callbacks->einfo
12320 (!IS_PPC64_TLS_RELOC (r_type)
12321 ? _("%P: %H: %s used with TLS symbol %s\n")
12322 : _("%P: %H: %s used with non-TLS symbol %s\n"),
12323 input_bfd, input_section, rel->r_offset,
12324 ppc64_elf_howto_table[r_type]->name,
12328 /* Ensure reloc mapping code below stays sane. */
12329 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
12330 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
12331 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
12332 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
12333 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
12334 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
12335 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
12336 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
12337 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
12338 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
12346 case R_PPC64_LO_DS_OPT:
12347 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12348 if ((insn & (0x3f << 26)) != 58u << 26)
12350 insn += (14u << 26) - (58u << 26);
12351 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12352 r_type = R_PPC64_TOC16_LO;
12353 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12356 case R_PPC64_TOC16:
12357 case R_PPC64_TOC16_LO:
12358 case R_PPC64_TOC16_DS:
12359 case R_PPC64_TOC16_LO_DS:
12361 /* Check for toc tls entries. */
12362 unsigned char *toc_tls;
12365 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12366 &local_syms, rel, input_bfd);
12372 tls_mask = *toc_tls;
12373 if (r_type == R_PPC64_TOC16_DS
12374 || r_type == R_PPC64_TOC16_LO_DS)
12377 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
12382 /* If we found a GD reloc pair, then we might be
12383 doing a GD->IE transition. */
12386 tls_gd = TLS_TPRELGD;
12387 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12390 else if (retval == 3)
12392 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12400 case R_PPC64_GOT_TPREL16_HI:
12401 case R_PPC64_GOT_TPREL16_HA:
12403 && (tls_mask & TLS_TPREL) == 0)
12405 rel->r_offset -= d_offset;
12406 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12407 r_type = R_PPC64_NONE;
12408 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12412 case R_PPC64_GOT_TPREL16_DS:
12413 case R_PPC64_GOT_TPREL16_LO_DS:
12415 && (tls_mask & TLS_TPREL) == 0)
12418 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12420 insn |= 0x3c0d0000; /* addis 0,13,0 */
12421 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12422 r_type = R_PPC64_TPREL16_HA;
12423 if (toc_symndx != 0)
12425 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12426 rel->r_addend = toc_addend;
12427 /* We changed the symbol. Start over in order to
12428 get h, sym, sec etc. right. */
12433 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12439 && (tls_mask & TLS_TPREL) == 0)
12441 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
12442 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
12445 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12446 /* Was PPC64_TLS which sits on insn boundary, now
12447 PPC64_TPREL16_LO which is at low-order half-word. */
12448 rel->r_offset += d_offset;
12449 r_type = R_PPC64_TPREL16_LO;
12450 if (toc_symndx != 0)
12452 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
12453 rel->r_addend = toc_addend;
12454 /* We changed the symbol. Start over in order to
12455 get h, sym, sec etc. right. */
12460 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12464 case R_PPC64_GOT_TLSGD16_HI:
12465 case R_PPC64_GOT_TLSGD16_HA:
12466 tls_gd = TLS_TPRELGD;
12467 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12471 case R_PPC64_GOT_TLSLD16_HI:
12472 case R_PPC64_GOT_TLSLD16_HA:
12473 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12476 if ((tls_mask & tls_gd) != 0)
12477 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12478 + R_PPC64_GOT_TPREL16_DS);
12481 rel->r_offset -= d_offset;
12482 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12483 r_type = R_PPC64_NONE;
12485 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12489 case R_PPC64_GOT_TLSGD16:
12490 case R_PPC64_GOT_TLSGD16_LO:
12491 tls_gd = TLS_TPRELGD;
12492 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12496 case R_PPC64_GOT_TLSLD16:
12497 case R_PPC64_GOT_TLSLD16_LO:
12498 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12500 unsigned int insn1, insn2, insn3;
12504 offset = (bfd_vma) -1;
12505 /* If not using the newer R_PPC64_TLSGD/LD to mark
12506 __tls_get_addr calls, we must trust that the call
12507 stays with its arg setup insns, ie. that the next
12508 reloc is the __tls_get_addr call associated with
12509 the current reloc. Edit both insns. */
12510 if (input_section->has_tls_get_addr_call
12511 && rel + 1 < relend
12512 && branch_reloc_hash_match (input_bfd, rel + 1,
12513 htab->tls_get_addr,
12514 htab->tls_get_addr_fd))
12515 offset = rel[1].r_offset;
12516 if ((tls_mask & tls_gd) != 0)
12519 insn1 = bfd_get_32 (output_bfd,
12520 contents + rel->r_offset - d_offset);
12521 insn1 &= (1 << 26) - (1 << 2);
12522 insn1 |= 58 << 26; /* ld */
12523 insn2 = 0x7c636a14; /* add 3,3,13 */
12524 if (offset != (bfd_vma) -1)
12525 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12526 if ((tls_mask & TLS_EXPLICIT) == 0)
12527 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12528 + R_PPC64_GOT_TPREL16_DS);
12530 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12531 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12536 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12537 insn2 = 0x38630000; /* addi 3,3,0 */
12540 /* Was an LD reloc. */
12542 sec = local_sections[toc_symndx];
12544 r_symndx < symtab_hdr->sh_info;
12546 if (local_sections[r_symndx] == sec)
12548 if (r_symndx >= symtab_hdr->sh_info)
12549 r_symndx = STN_UNDEF;
12550 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12551 if (r_symndx != STN_UNDEF)
12552 rel->r_addend -= (local_syms[r_symndx].st_value
12553 + sec->output_offset
12554 + sec->output_section->vma);
12556 else if (toc_symndx != 0)
12558 r_symndx = toc_symndx;
12559 rel->r_addend = toc_addend;
12561 r_type = R_PPC64_TPREL16_HA;
12562 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12563 if (offset != (bfd_vma) -1)
12565 rel[1].r_info = ELF64_R_INFO (r_symndx,
12566 R_PPC64_TPREL16_LO);
12567 rel[1].r_offset = offset + d_offset;
12568 rel[1].r_addend = rel->r_addend;
12571 bfd_put_32 (output_bfd, insn1,
12572 contents + rel->r_offset - d_offset);
12573 if (offset != (bfd_vma) -1)
12575 insn3 = bfd_get_32 (output_bfd,
12576 contents + offset + 4);
12578 || insn3 == CROR_151515 || insn3 == CROR_313131)
12580 rel[1].r_offset += 4;
12581 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12584 bfd_put_32 (output_bfd, insn2, contents + offset);
12586 if ((tls_mask & tls_gd) == 0
12587 && (tls_gd == 0 || toc_symndx != 0))
12589 /* We changed the symbol. Start over in order
12590 to get h, sym, sec etc. right. */
12597 case R_PPC64_TLSGD:
12598 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12600 unsigned int insn2, insn3;
12601 bfd_vma offset = rel->r_offset;
12603 if ((tls_mask & TLS_TPRELGD) != 0)
12606 r_type = R_PPC64_NONE;
12607 insn2 = 0x7c636a14; /* add 3,3,13 */
12612 if (toc_symndx != 0)
12614 r_symndx = toc_symndx;
12615 rel->r_addend = toc_addend;
12617 r_type = R_PPC64_TPREL16_LO;
12618 rel->r_offset = offset + d_offset;
12619 insn2 = 0x38630000; /* addi 3,3,0 */
12621 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12622 /* Zap the reloc on the _tls_get_addr call too. */
12623 BFD_ASSERT (offset == rel[1].r_offset);
12624 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12625 insn3 = bfd_get_32 (output_bfd,
12626 contents + offset + 4);
12628 || insn3 == CROR_151515 || insn3 == CROR_313131)
12630 rel->r_offset += 4;
12631 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12634 bfd_put_32 (output_bfd, insn2, contents + offset);
12635 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12643 case R_PPC64_TLSLD:
12644 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12646 unsigned int insn2, insn3;
12647 bfd_vma offset = rel->r_offset;
12650 sec = local_sections[toc_symndx];
12652 r_symndx < symtab_hdr->sh_info;
12654 if (local_sections[r_symndx] == sec)
12656 if (r_symndx >= symtab_hdr->sh_info)
12657 r_symndx = STN_UNDEF;
12658 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12659 if (r_symndx != STN_UNDEF)
12660 rel->r_addend -= (local_syms[r_symndx].st_value
12661 + sec->output_offset
12662 + sec->output_section->vma);
12664 r_type = R_PPC64_TPREL16_LO;
12665 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12666 rel->r_offset = offset + d_offset;
12667 /* Zap the reloc on the _tls_get_addr call too. */
12668 BFD_ASSERT (offset == rel[1].r_offset);
12669 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12670 insn2 = 0x38630000; /* addi 3,3,0 */
12671 insn3 = bfd_get_32 (output_bfd,
12672 contents + offset + 4);
12674 || insn3 == CROR_151515 || insn3 == CROR_313131)
12676 rel->r_offset += 4;
12677 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12680 bfd_put_32 (output_bfd, insn2, contents + offset);
12686 case R_PPC64_DTPMOD64:
12687 if (rel + 1 < relend
12688 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12689 && rel[1].r_offset == rel->r_offset + 8)
12691 if ((tls_mask & TLS_GD) == 0)
12693 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12694 if ((tls_mask & TLS_TPRELGD) != 0)
12695 r_type = R_PPC64_TPREL64;
12698 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12699 r_type = R_PPC64_NONE;
12701 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12706 if ((tls_mask & TLS_LD) == 0)
12708 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12709 r_type = R_PPC64_NONE;
12710 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12715 case R_PPC64_TPREL64:
12716 if ((tls_mask & TLS_TPREL) == 0)
12718 r_type = R_PPC64_NONE;
12719 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12724 /* Handle other relocations that tweak non-addend part of insn. */
12726 max_br_offset = 1 << 25;
12727 addend = rel->r_addend;
12733 case R_PPC64_TOCSAVE:
12734 if (relocation + addend == (rel->r_offset
12735 + input_section->output_offset
12736 + input_section->output_section->vma)
12737 && tocsave_find (htab, NO_INSERT,
12738 &local_syms, rel, input_bfd))
12740 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
12742 || insn == CROR_151515 || insn == CROR_313131)
12743 bfd_put_32 (input_bfd, STD_R2_40R1,
12744 contents + rel->r_offset);
12748 /* Branch taken prediction relocations. */
12749 case R_PPC64_ADDR14_BRTAKEN:
12750 case R_PPC64_REL14_BRTAKEN:
12751 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12754 /* Branch not taken prediction relocations. */
12755 case R_PPC64_ADDR14_BRNTAKEN:
12756 case R_PPC64_REL14_BRNTAKEN:
12757 insn |= bfd_get_32 (output_bfd,
12758 contents + rel->r_offset) & ~(0x01 << 21);
12761 case R_PPC64_REL14:
12762 max_br_offset = 1 << 15;
12765 case R_PPC64_REL24:
12766 /* Calls to functions with a different TOC, such as calls to
12767 shared objects, need to alter the TOC pointer. This is
12768 done using a linkage stub. A REL24 branching to these
12769 linkage stubs needs to be followed by a nop, as the nop
12770 will be replaced with an instruction to restore the TOC
12775 && h->oh->is_func_descriptor)
12776 fdh = ppc_follow_link (h->oh);
12777 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12778 if (stub_entry != NULL
12779 && (stub_entry->stub_type == ppc_stub_plt_call
12780 || stub_entry->stub_type == ppc_stub_plt_call_r2save
12781 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12782 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
12784 bfd_boolean can_plt_call = FALSE;
12786 if (rel->r_offset + 8 <= input_section->size)
12789 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12791 || nop == CROR_151515 || nop == CROR_313131)
12794 && (h == htab->tls_get_addr_fd
12795 || h == htab->tls_get_addr)
12796 && !htab->no_tls_get_addr_opt)
12798 /* Special stub used, leave nop alone. */
12801 bfd_put_32 (input_bfd, LD_R2_40R1,
12802 contents + rel->r_offset + 4);
12803 can_plt_call = TRUE;
12809 if (stub_entry->stub_type == ppc_stub_plt_call
12810 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12812 /* If this is a plain branch rather than a branch
12813 and link, don't require a nop. However, don't
12814 allow tail calls in a shared library as they
12815 will result in r2 being corrupted. */
12817 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
12818 if (info->executable && (br & 1) == 0)
12819 can_plt_call = TRUE;
12824 && strcmp (h->elf.root.root.string,
12825 ".__libc_start_main") == 0)
12827 /* Allow crt1 branch to go via a toc adjusting stub. */
12828 can_plt_call = TRUE;
12832 if (strcmp (input_section->output_section->name,
12834 || strcmp (input_section->output_section->name,
12836 info->callbacks->einfo
12837 (_("%P: %H: automatic multiple TOCs "
12838 "not supported using your crt files; "
12839 "recompile with -mminimal-toc or upgrade gcc\n"),
12840 input_bfd, input_section, rel->r_offset);
12842 info->callbacks->einfo
12843 (_("%P: %H: sibling call optimization to `%s' "
12844 "does not allow automatic multiple TOCs; "
12845 "recompile with -mminimal-toc or "
12846 "-fno-optimize-sibling-calls, "
12847 "or make `%s' extern\n"),
12848 input_bfd, input_section, rel->r_offset,
12851 bfd_set_error (bfd_error_bad_value);
12857 && (stub_entry->stub_type == ppc_stub_plt_call
12858 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
12859 unresolved_reloc = FALSE;
12862 if ((stub_entry == NULL
12863 || stub_entry->stub_type == ppc_stub_long_branch
12864 || stub_entry->stub_type == ppc_stub_plt_branch)
12865 && get_opd_info (sec) != NULL)
12867 /* The branch destination is the value of the opd entry. */
12868 bfd_vma off = (relocation + addend
12869 - sec->output_section->vma
12870 - sec->output_offset);
12871 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
12872 if (dest != (bfd_vma) -1)
12879 /* If the branch is out of reach we ought to have a long
12881 from = (rel->r_offset
12882 + input_section->output_offset
12883 + input_section->output_section->vma);
12885 if (stub_entry != NULL
12886 && (stub_entry->stub_type == ppc_stub_long_branch
12887 || stub_entry->stub_type == ppc_stub_plt_branch)
12888 && (r_type == R_PPC64_ADDR14_BRTAKEN
12889 || r_type == R_PPC64_ADDR14_BRNTAKEN
12890 || (relocation + addend - from + max_br_offset
12891 < 2 * max_br_offset)))
12892 /* Don't use the stub if this branch is in range. */
12895 if (stub_entry != NULL)
12897 /* Munge up the value and addend so that we call the stub
12898 rather than the procedure directly. */
12899 relocation = (stub_entry->stub_offset
12900 + stub_entry->stub_sec->output_offset
12901 + stub_entry->stub_sec->output_section->vma);
12904 if ((stub_entry->stub_type == ppc_stub_plt_call
12905 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12906 && (ALWAYS_EMIT_R2SAVE
12907 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12908 && rel + 1 < relend
12909 && rel[1].r_offset == rel->r_offset + 4
12910 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
12918 /* Set 'a' bit. This is 0b00010 in BO field for branch
12919 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12920 for branch on CTR insns (BO == 1a00t or 1a01t). */
12921 if ((insn & (0x14 << 21)) == (0x04 << 21))
12922 insn |= 0x02 << 21;
12923 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12924 insn |= 0x08 << 21;
12930 /* Invert 'y' bit if not the default. */
12931 if ((bfd_signed_vma) (relocation + addend - from) < 0)
12932 insn ^= 0x01 << 21;
12935 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12938 /* NOP out calls to undefined weak functions.
12939 We can thus call a weak function without first
12940 checking whether the function is defined. */
12942 && h->elf.root.type == bfd_link_hash_undefweak
12943 && h->elf.dynindx == -1
12944 && r_type == R_PPC64_REL24
12948 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12954 /* Set `addend'. */
12959 info->callbacks->einfo
12960 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
12961 input_bfd, (int) r_type, sym_name);
12963 bfd_set_error (bfd_error_bad_value);
12969 case R_PPC64_TLSGD:
12970 case R_PPC64_TLSLD:
12971 case R_PPC64_TOCSAVE:
12972 case R_PPC64_GNU_VTINHERIT:
12973 case R_PPC64_GNU_VTENTRY:
12976 /* GOT16 relocations. Like an ADDR16 using the symbol's
12977 address in the GOT as relocation value instead of the
12978 symbol's value itself. Also, create a GOT entry for the
12979 symbol and put the symbol value there. */
12980 case R_PPC64_GOT_TLSGD16:
12981 case R_PPC64_GOT_TLSGD16_LO:
12982 case R_PPC64_GOT_TLSGD16_HI:
12983 case R_PPC64_GOT_TLSGD16_HA:
12984 tls_type = TLS_TLS | TLS_GD;
12987 case R_PPC64_GOT_TLSLD16:
12988 case R_PPC64_GOT_TLSLD16_LO:
12989 case R_PPC64_GOT_TLSLD16_HI:
12990 case R_PPC64_GOT_TLSLD16_HA:
12991 tls_type = TLS_TLS | TLS_LD;
12994 case R_PPC64_GOT_TPREL16_DS:
12995 case R_PPC64_GOT_TPREL16_LO_DS:
12996 case R_PPC64_GOT_TPREL16_HI:
12997 case R_PPC64_GOT_TPREL16_HA:
12998 tls_type = TLS_TLS | TLS_TPREL;
13001 case R_PPC64_GOT_DTPREL16_DS:
13002 case R_PPC64_GOT_DTPREL16_LO_DS:
13003 case R_PPC64_GOT_DTPREL16_HI:
13004 case R_PPC64_GOT_DTPREL16_HA:
13005 tls_type = TLS_TLS | TLS_DTPREL;
13008 case R_PPC64_GOT16:
13009 case R_PPC64_GOT16_LO:
13010 case R_PPC64_GOT16_HI:
13011 case R_PPC64_GOT16_HA:
13012 case R_PPC64_GOT16_DS:
13013 case R_PPC64_GOT16_LO_DS:
13016 /* Relocation is to the entry for this symbol in the global
13021 unsigned long indx = 0;
13022 struct got_entry *ent;
13024 if (tls_type == (TLS_TLS | TLS_LD)
13026 || !h->elf.def_dynamic))
13027 ent = ppc64_tlsld_got (input_bfd);
13033 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13034 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13037 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13038 /* This is actually a static link, or it is a
13039 -Bsymbolic link and the symbol is defined
13040 locally, or the symbol was forced to be local
13041 because of a version file. */
13045 indx = h->elf.dynindx;
13046 unresolved_reloc = FALSE;
13048 ent = h->elf.got.glist;
13052 if (local_got_ents == NULL)
13054 ent = local_got_ents[r_symndx];
13057 for (; ent != NULL; ent = ent->next)
13058 if (ent->addend == orig_addend
13059 && ent->owner == input_bfd
13060 && ent->tls_type == tls_type)
13066 if (ent->is_indirect)
13067 ent = ent->got.ent;
13068 offp = &ent->got.offset;
13069 got = ppc64_elf_tdata (ent->owner)->got;
13073 /* The offset must always be a multiple of 8. We use the
13074 least significant bit to record whether we have already
13075 processed this entry. */
13077 if ((off & 1) != 0)
13081 /* Generate relocs for the dynamic linker, except in
13082 the case of TLSLD where we'll use one entry per
13090 ? h->elf.type == STT_GNU_IFUNC
13091 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13092 if ((info->shared || indx != 0)
13094 || (tls_type == (TLS_TLS | TLS_LD)
13095 && !h->elf.def_dynamic)
13096 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13097 || h->elf.root.type != bfd_link_hash_undefweak))
13098 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13100 relgot = htab->reliplt;
13101 if (relgot != NULL)
13103 outrel.r_offset = (got->output_section->vma
13104 + got->output_offset
13106 outrel.r_addend = addend;
13107 if (tls_type & (TLS_LD | TLS_GD))
13109 outrel.r_addend = 0;
13110 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13111 if (tls_type == (TLS_TLS | TLS_GD))
13113 loc = relgot->contents;
13114 loc += (relgot->reloc_count++
13115 * sizeof (Elf64_External_Rela));
13116 bfd_elf64_swap_reloca_out (output_bfd,
13118 outrel.r_offset += 8;
13119 outrel.r_addend = addend;
13121 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13124 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13125 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13126 else if (tls_type == (TLS_TLS | TLS_TPREL))
13127 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13128 else if (indx != 0)
13129 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13133 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13135 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13137 /* Write the .got section contents for the sake
13139 loc = got->contents + off;
13140 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13144 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13146 outrel.r_addend += relocation;
13147 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13148 outrel.r_addend -= htab->elf.tls_sec->vma;
13150 loc = relgot->contents;
13151 loc += (relgot->reloc_count++
13152 * sizeof (Elf64_External_Rela));
13153 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13156 /* Init the .got section contents here if we're not
13157 emitting a reloc. */
13160 relocation += addend;
13161 if (tls_type == (TLS_TLS | TLS_LD))
13163 else if (tls_type != 0)
13165 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13166 if (tls_type == (TLS_TLS | TLS_TPREL))
13167 relocation += DTP_OFFSET - TP_OFFSET;
13169 if (tls_type == (TLS_TLS | TLS_GD))
13171 bfd_put_64 (output_bfd, relocation,
13172 got->contents + off + 8);
13177 bfd_put_64 (output_bfd, relocation,
13178 got->contents + off);
13182 if (off >= (bfd_vma) -2)
13185 relocation = got->output_section->vma + got->output_offset + off;
13186 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
13190 case R_PPC64_PLT16_HA:
13191 case R_PPC64_PLT16_HI:
13192 case R_PPC64_PLT16_LO:
13193 case R_PPC64_PLT32:
13194 case R_PPC64_PLT64:
13195 /* Relocation is to the entry for this symbol in the
13196 procedure linkage table. */
13198 /* Resolve a PLT reloc against a local symbol directly,
13199 without using the procedure linkage table. */
13203 /* It's possible that we didn't make a PLT entry for this
13204 symbol. This happens when statically linking PIC code,
13205 or when using -Bsymbolic. Go find a match if there is a
13207 if (htab->plt != NULL)
13209 struct plt_entry *ent;
13210 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
13211 if (ent->addend == orig_addend
13212 && ent->plt.offset != (bfd_vma) -1)
13214 relocation = (htab->plt->output_section->vma
13215 + htab->plt->output_offset
13216 + ent->plt.offset);
13217 unresolved_reloc = FALSE;
13223 /* Relocation value is TOC base. */
13224 relocation = TOCstart;
13225 if (r_symndx == STN_UNDEF)
13226 relocation += htab->stub_group[input_section->id].toc_off;
13227 else if (unresolved_reloc)
13229 else if (sec != NULL && sec->id <= htab->top_id)
13230 relocation += htab->stub_group[sec->id].toc_off;
13232 unresolved_reloc = TRUE;
13235 /* TOC16 relocs. We want the offset relative to the TOC base,
13236 which is the address of the start of the TOC plus 0x8000.
13237 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13239 case R_PPC64_TOC16:
13240 case R_PPC64_TOC16_LO:
13241 case R_PPC64_TOC16_HI:
13242 case R_PPC64_TOC16_DS:
13243 case R_PPC64_TOC16_LO_DS:
13244 case R_PPC64_TOC16_HA:
13245 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
13248 /* Relocate against the beginning of the section. */
13249 case R_PPC64_SECTOFF:
13250 case R_PPC64_SECTOFF_LO:
13251 case R_PPC64_SECTOFF_HI:
13252 case R_PPC64_SECTOFF_DS:
13253 case R_PPC64_SECTOFF_LO_DS:
13254 case R_PPC64_SECTOFF_HA:
13256 addend -= sec->output_section->vma;
13259 case R_PPC64_REL16:
13260 case R_PPC64_REL16_LO:
13261 case R_PPC64_REL16_HI:
13262 case R_PPC64_REL16_HA:
13265 case R_PPC64_REL14:
13266 case R_PPC64_REL14_BRNTAKEN:
13267 case R_PPC64_REL14_BRTAKEN:
13268 case R_PPC64_REL24:
13271 case R_PPC64_TPREL16:
13272 case R_PPC64_TPREL16_LO:
13273 case R_PPC64_TPREL16_HI:
13274 case R_PPC64_TPREL16_HA:
13275 case R_PPC64_TPREL16_DS:
13276 case R_PPC64_TPREL16_LO_DS:
13277 case R_PPC64_TPREL16_HIGHER:
13278 case R_PPC64_TPREL16_HIGHERA:
13279 case R_PPC64_TPREL16_HIGHEST:
13280 case R_PPC64_TPREL16_HIGHESTA:
13282 && h->elf.root.type == bfd_link_hash_undefweak
13283 && h->elf.dynindx == -1)
13285 /* Make this relocation against an undefined weak symbol
13286 resolve to zero. This is really just a tweak, since
13287 code using weak externs ought to check that they are
13288 defined before using them. */
13289 bfd_byte *p = contents + rel->r_offset - d_offset;
13291 insn = bfd_get_32 (output_bfd, p);
13292 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
13294 bfd_put_32 (output_bfd, insn, p);
13297 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13299 /* The TPREL16 relocs shouldn't really be used in shared
13300 libs as they will result in DT_TEXTREL being set, but
13301 support them anyway. */
13305 case R_PPC64_DTPREL16:
13306 case R_PPC64_DTPREL16_LO:
13307 case R_PPC64_DTPREL16_HI:
13308 case R_PPC64_DTPREL16_HA:
13309 case R_PPC64_DTPREL16_DS:
13310 case R_PPC64_DTPREL16_LO_DS:
13311 case R_PPC64_DTPREL16_HIGHER:
13312 case R_PPC64_DTPREL16_HIGHERA:
13313 case R_PPC64_DTPREL16_HIGHEST:
13314 case R_PPC64_DTPREL16_HIGHESTA:
13315 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13318 case R_PPC64_DTPMOD64:
13323 case R_PPC64_TPREL64:
13324 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
13327 case R_PPC64_DTPREL64:
13328 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
13331 /* Relocations that may need to be propagated if this is a
13333 case R_PPC64_REL30:
13334 case R_PPC64_REL32:
13335 case R_PPC64_REL64:
13336 case R_PPC64_ADDR14:
13337 case R_PPC64_ADDR14_BRNTAKEN:
13338 case R_PPC64_ADDR14_BRTAKEN:
13339 case R_PPC64_ADDR16:
13340 case R_PPC64_ADDR16_DS:
13341 case R_PPC64_ADDR16_HA:
13342 case R_PPC64_ADDR16_HI:
13343 case R_PPC64_ADDR16_HIGHER:
13344 case R_PPC64_ADDR16_HIGHERA:
13345 case R_PPC64_ADDR16_HIGHEST:
13346 case R_PPC64_ADDR16_HIGHESTA:
13347 case R_PPC64_ADDR16_LO:
13348 case R_PPC64_ADDR16_LO_DS:
13349 case R_PPC64_ADDR24:
13350 case R_PPC64_ADDR32:
13351 case R_PPC64_ADDR64:
13352 case R_PPC64_UADDR16:
13353 case R_PPC64_UADDR32:
13354 case R_PPC64_UADDR64:
13356 if ((input_section->flags & SEC_ALLOC) == 0)
13359 if (NO_OPD_RELOCS && is_opd)
13364 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13365 || h->elf.root.type != bfd_link_hash_undefweak)
13366 && (must_be_dyn_reloc (info, r_type)
13367 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
13368 || (ELIMINATE_COPY_RELOCS
13371 && h->elf.dynindx != -1
13372 && !h->elf.non_got_ref
13373 && !h->elf.def_regular)
13376 ? h->elf.type == STT_GNU_IFUNC
13377 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
13379 bfd_boolean skip, relocate;
13383 /* When generating a dynamic object, these relocations
13384 are copied into the output file to be resolved at run
13390 out_off = _bfd_elf_section_offset (output_bfd, info,
13391 input_section, rel->r_offset);
13392 if (out_off == (bfd_vma) -1)
13394 else if (out_off == (bfd_vma) -2)
13395 skip = TRUE, relocate = TRUE;
13396 out_off += (input_section->output_section->vma
13397 + input_section->output_offset);
13398 outrel.r_offset = out_off;
13399 outrel.r_addend = rel->r_addend;
13401 /* Optimize unaligned reloc use. */
13402 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
13403 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
13404 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
13405 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
13406 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
13407 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
13408 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
13409 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
13410 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
13413 memset (&outrel, 0, sizeof outrel);
13414 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
13416 && r_type != R_PPC64_TOC)
13417 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
13420 /* This symbol is local, or marked to become local,
13421 or this is an opd section reloc which must point
13422 at a local function. */
13423 outrel.r_addend += relocation;
13424 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
13426 if (is_opd && h != NULL)
13428 /* Lie about opd entries. This case occurs
13429 when building shared libraries and we
13430 reference a function in another shared
13431 lib. The same thing happens for a weak
13432 definition in an application that's
13433 overridden by a strong definition in a
13434 shared lib. (I believe this is a generic
13435 bug in binutils handling of weak syms.)
13436 In these cases we won't use the opd
13437 entry in this lib. */
13438 unresolved_reloc = FALSE;
13441 && r_type == R_PPC64_ADDR64
13443 ? h->elf.type == STT_GNU_IFUNC
13444 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
13445 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13448 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13450 /* We need to relocate .opd contents for ld.so.
13451 Prelink also wants simple and consistent rules
13452 for relocs. This make all RELATIVE relocs have
13453 *r_offset equal to r_addend. */
13462 ? h->elf.type == STT_GNU_IFUNC
13463 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13465 info->callbacks->einfo
13466 (_("%P: %H: relocation %s for indirect "
13467 "function %s unsupported\n"),
13468 input_bfd, input_section, rel->r_offset,
13469 ppc64_elf_howto_table[r_type]->name,
13473 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
13475 else if (sec == NULL || sec->owner == NULL)
13477 bfd_set_error (bfd_error_bad_value);
13484 osec = sec->output_section;
13485 indx = elf_section_data (osec)->dynindx;
13489 if ((osec->flags & SEC_READONLY) == 0
13490 && htab->elf.data_index_section != NULL)
13491 osec = htab->elf.data_index_section;
13493 osec = htab->elf.text_index_section;
13494 indx = elf_section_data (osec)->dynindx;
13496 BFD_ASSERT (indx != 0);
13498 /* We are turning this relocation into one
13499 against a section symbol, so subtract out
13500 the output section's address but not the
13501 offset of the input section in the output
13503 outrel.r_addend -= osec->vma;
13506 outrel.r_info = ELF64_R_INFO (indx, r_type);
13510 sreloc = elf_section_data (input_section)->sreloc;
13511 if (!htab->elf.dynamic_sections_created)
13512 sreloc = htab->reliplt;
13513 if (sreloc == NULL)
13516 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13519 loc = sreloc->contents;
13520 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13521 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13523 /* If this reloc is against an external symbol, it will
13524 be computed at runtime, so there's no need to do
13525 anything now. However, for the sake of prelink ensure
13526 that the section contents are a known value. */
13529 unresolved_reloc = FALSE;
13530 /* The value chosen here is quite arbitrary as ld.so
13531 ignores section contents except for the special
13532 case of .opd where the contents might be accessed
13533 before relocation. Choose zero, as that won't
13534 cause reloc overflow. */
13537 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13538 to improve backward compatibility with older
13540 if (r_type == R_PPC64_ADDR64)
13541 addend = outrel.r_addend;
13542 /* Adjust pc_relative relocs to have zero in *r_offset. */
13543 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13544 addend = (input_section->output_section->vma
13545 + input_section->output_offset
13552 case R_PPC64_GLOB_DAT:
13553 case R_PPC64_JMP_SLOT:
13554 case R_PPC64_JMP_IREL:
13555 case R_PPC64_RELATIVE:
13556 /* We shouldn't ever see these dynamic relocs in relocatable
13558 /* Fall through. */
13560 case R_PPC64_PLTGOT16:
13561 case R_PPC64_PLTGOT16_DS:
13562 case R_PPC64_PLTGOT16_HA:
13563 case R_PPC64_PLTGOT16_HI:
13564 case R_PPC64_PLTGOT16_LO:
13565 case R_PPC64_PLTGOT16_LO_DS:
13566 case R_PPC64_PLTREL32:
13567 case R_PPC64_PLTREL64:
13568 /* These ones haven't been implemented yet. */
13570 info->callbacks->einfo
13571 (_("%P: %B: relocation %s is not supported for symbol %s\n"),
13573 ppc64_elf_howto_table[r_type]->name, sym_name);
13575 bfd_set_error (bfd_error_invalid_operation);
13580 /* Multi-instruction sequences that access the TOC can be
13581 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13582 to nop; addi rb,r2,x; */
13588 case R_PPC64_GOT_TLSLD16_HI:
13589 case R_PPC64_GOT_TLSGD16_HI:
13590 case R_PPC64_GOT_TPREL16_HI:
13591 case R_PPC64_GOT_DTPREL16_HI:
13592 case R_PPC64_GOT16_HI:
13593 case R_PPC64_TOC16_HI:
13594 /* These relocs would only be useful if building up an
13595 offset to later add to r2, perhaps in an indexed
13596 addressing mode instruction. Don't try to optimize.
13597 Unfortunately, the possibility of someone building up an
13598 offset like this or even with the HA relocs, means that
13599 we need to check the high insn when optimizing the low
13603 case R_PPC64_GOT_TLSLD16_HA:
13604 case R_PPC64_GOT_TLSGD16_HA:
13605 case R_PPC64_GOT_TPREL16_HA:
13606 case R_PPC64_GOT_DTPREL16_HA:
13607 case R_PPC64_GOT16_HA:
13608 case R_PPC64_TOC16_HA:
13609 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13610 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13612 bfd_byte *p = contents + (rel->r_offset & ~3);
13613 bfd_put_32 (input_bfd, NOP, p);
13617 case R_PPC64_GOT_TLSLD16_LO:
13618 case R_PPC64_GOT_TLSGD16_LO:
13619 case R_PPC64_GOT_TPREL16_LO_DS:
13620 case R_PPC64_GOT_DTPREL16_LO_DS:
13621 case R_PPC64_GOT16_LO:
13622 case R_PPC64_GOT16_LO_DS:
13623 case R_PPC64_TOC16_LO:
13624 case R_PPC64_TOC16_LO_DS:
13625 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
13626 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
13628 bfd_byte *p = contents + (rel->r_offset & ~3);
13629 insn = bfd_get_32 (input_bfd, p);
13630 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
13632 /* Transform addic to addi when we change reg. */
13633 insn &= ~((0x3f << 26) | (0x1f << 16));
13634 insn |= (14u << 26) | (2 << 16);
13638 insn &= ~(0x1f << 16);
13641 bfd_put_32 (input_bfd, insn, p);
13646 /* Do any further special processing. */
13652 case R_PPC64_ADDR16_HA:
13653 case R_PPC64_REL16_HA:
13654 case R_PPC64_ADDR16_HIGHERA:
13655 case R_PPC64_ADDR16_HIGHESTA:
13656 case R_PPC64_TOC16_HA:
13657 case R_PPC64_SECTOFF_HA:
13658 case R_PPC64_TPREL16_HA:
13659 case R_PPC64_DTPREL16_HA:
13660 case R_PPC64_TPREL16_HIGHER:
13661 case R_PPC64_TPREL16_HIGHERA:
13662 case R_PPC64_TPREL16_HIGHEST:
13663 case R_PPC64_TPREL16_HIGHESTA:
13664 case R_PPC64_DTPREL16_HIGHER:
13665 case R_PPC64_DTPREL16_HIGHERA:
13666 case R_PPC64_DTPREL16_HIGHEST:
13667 case R_PPC64_DTPREL16_HIGHESTA:
13668 /* It's just possible that this symbol is a weak symbol
13669 that's not actually defined anywhere. In that case,
13670 'sec' would be NULL, and we should leave the symbol
13671 alone (it will be set to zero elsewhere in the link). */
13676 case R_PPC64_GOT16_HA:
13677 case R_PPC64_PLTGOT16_HA:
13678 case R_PPC64_PLT16_HA:
13679 case R_PPC64_GOT_TLSGD16_HA:
13680 case R_PPC64_GOT_TLSLD16_HA:
13681 case R_PPC64_GOT_TPREL16_HA:
13682 case R_PPC64_GOT_DTPREL16_HA:
13683 /* Add 0x10000 if sign bit in 0:15 is set.
13684 Bits 0:15 are not used. */
13688 case R_PPC64_ADDR16_DS:
13689 case R_PPC64_ADDR16_LO_DS:
13690 case R_PPC64_GOT16_DS:
13691 case R_PPC64_GOT16_LO_DS:
13692 case R_PPC64_PLT16_LO_DS:
13693 case R_PPC64_SECTOFF_DS:
13694 case R_PPC64_SECTOFF_LO_DS:
13695 case R_PPC64_TOC16_DS:
13696 case R_PPC64_TOC16_LO_DS:
13697 case R_PPC64_PLTGOT16_DS:
13698 case R_PPC64_PLTGOT16_LO_DS:
13699 case R_PPC64_GOT_TPREL16_DS:
13700 case R_PPC64_GOT_TPREL16_LO_DS:
13701 case R_PPC64_GOT_DTPREL16_DS:
13702 case R_PPC64_GOT_DTPREL16_LO_DS:
13703 case R_PPC64_TPREL16_DS:
13704 case R_PPC64_TPREL16_LO_DS:
13705 case R_PPC64_DTPREL16_DS:
13706 case R_PPC64_DTPREL16_LO_DS:
13707 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13709 /* If this reloc is against an lq insn, then the value must be
13710 a multiple of 16. This is somewhat of a hack, but the
13711 "correct" way to do this by defining _DQ forms of all the
13712 _DS relocs bloats all reloc switches in this file. It
13713 doesn't seem to make much sense to use any of these relocs
13714 in data, so testing the insn should be safe. */
13715 if ((insn & (0x3f << 26)) == (56u << 26))
13717 if (((relocation + addend) & mask) != 0)
13719 info->callbacks->einfo
13720 (_("%P: %H: error: %s not a multiple of %u\n"),
13721 input_bfd, input_section, rel->r_offset,
13722 ppc64_elf_howto_table[r_type]->name,
13724 bfd_set_error (bfd_error_bad_value);
13731 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13732 because such sections are not SEC_ALLOC and thus ld.so will
13733 not process them. */
13734 if (unresolved_reloc
13735 && !((input_section->flags & SEC_DEBUGGING) != 0
13736 && h->elf.def_dynamic)
13737 && _bfd_elf_section_offset (output_bfd, info, input_section,
13738 rel->r_offset) != (bfd_vma) -1)
13740 info->callbacks->einfo
13741 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
13742 input_bfd, input_section, rel->r_offset,
13743 ppc64_elf_howto_table[(int) r_type]->name,
13744 h->elf.root.root.string);
13748 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
13756 if (r != bfd_reloc_ok)
13758 if (sym_name == NULL)
13759 sym_name = "(null)";
13760 if (r == bfd_reloc_overflow)
13765 && h->elf.root.type == bfd_link_hash_undefweak
13766 && ppc64_elf_howto_table[r_type]->pc_relative)
13768 /* Assume this is a call protected by other code that
13769 detects the symbol is undefined. If this is the case,
13770 we can safely ignore the overflow. If not, the
13771 program is hosed anyway, and a little warning isn't
13777 if (!((*info->callbacks->reloc_overflow)
13778 (info, (h ? &h->elf.root : NULL), sym_name,
13779 ppc64_elf_howto_table[r_type]->name,
13780 orig_addend, input_bfd, input_section, rel->r_offset)))
13785 info->callbacks->einfo
13786 (_("%P: %H: %s reloc against `%s': error %d\n"),
13787 input_bfd, input_section, rel->r_offset,
13788 ppc64_elf_howto_table[r_type]->name,
13796 /* If we're emitting relocations, then shortly after this function
13797 returns, reloc offsets and addends for this section will be
13798 adjusted. Worse, reloc symbol indices will be for the output
13799 file rather than the input. Save a copy of the relocs for
13800 opd_entry_value. */
13801 if (is_opd && (info->emitrelocations || info->relocatable))
13804 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13805 rel = bfd_alloc (input_bfd, amt);
13806 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13807 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13810 memcpy (rel, relocs, amt);
13815 /* Adjust the value of any local symbols in opd sections. */
13818 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13819 const char *name ATTRIBUTE_UNUSED,
13820 Elf_Internal_Sym *elfsym,
13821 asection *input_sec,
13822 struct elf_link_hash_entry *h)
13824 struct _opd_sec_data *opd;
13831 opd = get_opd_info (input_sec);
13832 if (opd == NULL || opd->adjust == NULL)
13835 value = elfsym->st_value - input_sec->output_offset;
13836 if (!info->relocatable)
13837 value -= input_sec->output_section->vma;
13839 adjust = opd->adjust[value / 8];
13843 elfsym->st_value += adjust;
13847 /* Finish up dynamic symbol handling. We set the contents of various
13848 dynamic sections here. */
13851 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13852 struct bfd_link_info *info,
13853 struct elf_link_hash_entry *h,
13854 Elf_Internal_Sym *sym)
13856 struct ppc_link_hash_table *htab;
13857 struct plt_entry *ent;
13858 Elf_Internal_Rela rela;
13861 htab = ppc_hash_table (info);
13865 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13866 if (ent->plt.offset != (bfd_vma) -1)
13868 /* This symbol has an entry in the procedure linkage
13869 table. Set it up. */
13870 if (!htab->elf.dynamic_sections_created
13871 || h->dynindx == -1)
13873 BFD_ASSERT (h->type == STT_GNU_IFUNC
13875 && (h->root.type == bfd_link_hash_defined
13876 || h->root.type == bfd_link_hash_defweak));
13877 rela.r_offset = (htab->iplt->output_section->vma
13878 + htab->iplt->output_offset
13879 + ent->plt.offset);
13880 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13881 rela.r_addend = (h->root.u.def.value
13882 + h->root.u.def.section->output_offset
13883 + h->root.u.def.section->output_section->vma
13885 loc = (htab->reliplt->contents
13886 + (htab->reliplt->reloc_count++
13887 * sizeof (Elf64_External_Rela)));
13891 rela.r_offset = (htab->plt->output_section->vma
13892 + htab->plt->output_offset
13893 + ent->plt.offset);
13894 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13895 rela.r_addend = ent->addend;
13896 loc = (htab->relplt->contents
13897 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13898 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
13900 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13905 /* This symbol needs a copy reloc. Set it up. */
13907 if (h->dynindx == -1
13908 || (h->root.type != bfd_link_hash_defined
13909 && h->root.type != bfd_link_hash_defweak)
13910 || htab->relbss == NULL)
13913 rela.r_offset = (h->root.u.def.value
13914 + h->root.u.def.section->output_section->vma
13915 + h->root.u.def.section->output_offset);
13916 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13918 loc = htab->relbss->contents;
13919 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
13920 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13923 /* Mark some specially defined symbols as absolute. */
13924 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
13925 sym->st_shndx = SHN_ABS;
13930 /* Used to decide how to sort relocs in an optimal manner for the
13931 dynamic linker, before writing them out. */
13933 static enum elf_reloc_type_class
13934 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
13936 enum elf_ppc64_reloc_type r_type;
13938 r_type = ELF64_R_TYPE (rela->r_info);
13941 case R_PPC64_RELATIVE:
13942 return reloc_class_relative;
13943 case R_PPC64_JMP_SLOT:
13944 return reloc_class_plt;
13946 return reloc_class_copy;
13948 return reloc_class_normal;
13952 /* Finish up the dynamic sections. */
13955 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
13956 struct bfd_link_info *info)
13958 struct ppc_link_hash_table *htab;
13962 htab = ppc_hash_table (info);
13966 dynobj = htab->elf.dynobj;
13967 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
13969 if (htab->elf.dynamic_sections_created)
13971 Elf64_External_Dyn *dyncon, *dynconend;
13973 if (sdyn == NULL || htab->got == NULL)
13976 dyncon = (Elf64_External_Dyn *) sdyn->contents;
13977 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
13978 for (; dyncon < dynconend; dyncon++)
13980 Elf_Internal_Dyn dyn;
13983 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
13990 case DT_PPC64_GLINK:
13992 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13993 /* We stupidly defined DT_PPC64_GLINK to be the start
13994 of glink rather than the first entry point, which is
13995 what ld.so needs, and now have a bigger stub to
13996 support automatic multiple TOCs. */
13997 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
14001 s = bfd_get_section_by_name (output_bfd, ".opd");
14004 dyn.d_un.d_ptr = s->vma;
14007 case DT_PPC64_OPDSZ:
14008 s = bfd_get_section_by_name (output_bfd, ".opd");
14011 dyn.d_un.d_val = s->size;
14016 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14021 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14025 dyn.d_un.d_val = htab->relplt->size;
14029 /* Don't count procedure linkage table relocs in the
14030 overall reloc count. */
14034 dyn.d_un.d_val -= s->size;
14038 /* We may not be using the standard ELF linker script.
14039 If .rela.plt is the first .rela section, we adjust
14040 DT_RELA to not include it. */
14044 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14046 dyn.d_un.d_ptr += s->size;
14050 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14054 if (htab->got != NULL && htab->got->size != 0)
14056 /* Fill in the first entry in the global offset table.
14057 We use it to hold the link-time TOCbase. */
14058 bfd_put_64 (output_bfd,
14059 elf_gp (output_bfd) + TOC_BASE_OFF,
14060 htab->got->contents);
14062 /* Set .got entry size. */
14063 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
14066 if (htab->plt != NULL && htab->plt->size != 0)
14068 /* Set .plt entry size. */
14069 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
14073 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14074 brlt ourselves if emitrelocations. */
14075 if (htab->brlt != NULL
14076 && htab->brlt->reloc_count != 0
14077 && !_bfd_elf_link_output_relocs (output_bfd,
14079 elf_section_data (htab->brlt)->rela.hdr,
14080 elf_section_data (htab->brlt)->relocs,
14084 if (htab->glink != NULL
14085 && htab->glink->reloc_count != 0
14086 && !_bfd_elf_link_output_relocs (output_bfd,
14088 elf_section_data (htab->glink)->rela.hdr,
14089 elf_section_data (htab->glink)->relocs,
14094 if (htab->glink_eh_frame != NULL
14095 && htab->glink_eh_frame->sec_info_type == ELF_INFO_TYPE_EH_FRAME
14096 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14097 htab->glink_eh_frame,
14098 htab->glink_eh_frame->contents))
14101 /* We need to handle writing out multiple GOT sections ourselves,
14102 since we didn't add them to DYNOBJ. We know dynobj is the first
14104 while ((dynobj = dynobj->link_next) != NULL)
14108 if (!is_ppc64_elf (dynobj))
14111 s = ppc64_elf_tdata (dynobj)->got;
14114 && s->output_section != bfd_abs_section_ptr
14115 && !bfd_set_section_contents (output_bfd, s->output_section,
14116 s->contents, s->output_offset,
14119 s = ppc64_elf_tdata (dynobj)->relgot;
14122 && s->output_section != bfd_abs_section_ptr
14123 && !bfd_set_section_contents (output_bfd, s->output_section,
14124 s->contents, s->output_offset,
14132 #include "elf64-target.h"
14134 /* FreeBSD support */
14136 #undef TARGET_LITTLE_SYM
14137 #undef TARGET_LITTLE_NAME
14139 #undef TARGET_BIG_SYM
14140 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14141 #undef TARGET_BIG_NAME
14142 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14145 #define ELF_OSABI ELFOSABI_FREEBSD
14148 #define elf64_bed elf64_powerpc_fbsd_bed
14150 #include "elf64-target.h"