1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2014 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
59 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x1000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
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_before_check_relocs
99 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
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_hash_symbol ppc64_elf_hash_symbol
112 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
113 #define elf_backend_action_discarded ppc64_elf_action_discarded
114 #define elf_backend_relocate_section ppc64_elf_relocate_section
115 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
116 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
117 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
118 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
119 #define elf_backend_special_sections ppc64_elf_special_sections
120 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
122 /* The name of the dynamic interpreter. This is put in the .interp
124 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
126 /* The size in bytes of an entry in the procedure linkage table. */
127 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
129 /* The initial size of the plt reserved for the dynamic linker. */
130 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
132 /* Offsets to some stack save slots. */
134 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
135 /* This one is dodgy. ELFv2 does not have a linker word, so use the
136 CR save slot. Used only by optimised __tls_get_addr call stub,
137 relying on __tls_get_addr_opt not saving CR.. */
138 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
140 /* TOC base pointers offset from start of TOC. */
141 #define TOC_BASE_OFF 0x8000
143 /* Offset of tp and dtp pointers from start of TLS block. */
144 #define TP_OFFSET 0x7000
145 #define DTP_OFFSET 0x8000
147 /* .plt call stub instructions. The normal stub is like this, but
148 sometimes the .plt entry crosses a 64k boundary and we need to
149 insert an addi to adjust r11. */
150 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
151 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
152 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
153 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
154 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
155 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
156 #define BCTR 0x4e800420 /* bctr */
158 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
159 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
160 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
162 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
163 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
164 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
165 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
166 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
167 #define BNECTR 0x4ca20420 /* bnectr+ */
168 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
170 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
171 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
172 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
174 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
176 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
177 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
179 /* glink call stub instructions. We enter with the index in R0. */
180 #define GLINK_CALL_STUB_SIZE (16*4)
184 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
185 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
187 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
188 /* ld %2,(0b-1b)(%11) */
189 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
190 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
196 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
197 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
198 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
199 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
200 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
203 #define NOP 0x60000000
205 /* Some other nops. */
206 #define CROR_151515 0x4def7b82
207 #define CROR_313131 0x4ffffb82
209 /* .glink entries for the first 32k functions are two instructions. */
210 #define LI_R0_0 0x38000000 /* li %r0,0 */
211 #define B_DOT 0x48000000 /* b . */
213 /* After that, we need two instructions to load the index, followed by
215 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
216 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
218 /* Instructions used by the save and restore reg functions. */
219 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
220 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
221 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
222 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
223 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
224 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
225 #define LI_R12_0 0x39800000 /* li %r12,0 */
226 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
227 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
228 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
229 #define BLR 0x4e800020 /* blr */
231 /* Since .opd is an array of descriptors and each entry will end up
232 with identical R_PPC64_RELATIVE relocs, there is really no need to
233 propagate .opd relocs; The dynamic linker should be taught to
234 relocate .opd without reloc entries. */
235 #ifndef NO_OPD_RELOCS
236 #define NO_OPD_RELOCS 0
239 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
241 /* Relocation HOWTO's. */
242 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
244 static reloc_howto_type ppc64_elf_howto_raw[] = {
245 /* This reloc does nothing. */
246 HOWTO (R_PPC64_NONE, /* type */
248 2, /* size (0 = byte, 1 = short, 2 = long) */
250 FALSE, /* pc_relative */
252 complain_overflow_dont, /* complain_on_overflow */
253 bfd_elf_generic_reloc, /* special_function */
254 "R_PPC64_NONE", /* name */
255 FALSE, /* partial_inplace */
258 FALSE), /* pcrel_offset */
260 /* A standard 32 bit relocation. */
261 HOWTO (R_PPC64_ADDR32, /* 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_ADDR32", /* name */
270 FALSE, /* partial_inplace */
272 0xffffffff, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* An absolute 26 bit branch; the lower two bits must be zero.
276 FIXME: we don't check that, we just clear them. */
277 HOWTO (R_PPC64_ADDR24, /* type */
279 2, /* size (0 = byte, 1 = short, 2 = long) */
281 FALSE, /* pc_relative */
283 complain_overflow_bitfield, /* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_PPC64_ADDR24", /* name */
286 FALSE, /* partial_inplace */
288 0x03fffffc, /* dst_mask */
289 FALSE), /* pcrel_offset */
291 /* A standard 16 bit relocation. */
292 HOWTO (R_PPC64_ADDR16, /* type */
294 1, /* size (0 = byte, 1 = short, 2 = long) */
296 FALSE, /* pc_relative */
298 complain_overflow_bitfield, /* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_PPC64_ADDR16", /* name */
301 FALSE, /* partial_inplace */
303 0xffff, /* dst_mask */
304 FALSE), /* pcrel_offset */
306 /* A 16 bit relocation without overflow. */
307 HOWTO (R_PPC64_ADDR16_LO, /* type */
309 1, /* size (0 = byte, 1 = short, 2 = long) */
311 FALSE, /* pc_relative */
313 complain_overflow_dont,/* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_PPC64_ADDR16_LO", /* name */
316 FALSE, /* partial_inplace */
318 0xffff, /* dst_mask */
319 FALSE), /* pcrel_offset */
321 /* Bits 16-31 of an address. */
322 HOWTO (R_PPC64_ADDR16_HI, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_signed, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_PPC64_ADDR16_HI", /* name */
331 FALSE, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
337 bits, treated as a signed number, is negative. */
338 HOWTO (R_PPC64_ADDR16_HA, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_signed, /* complain_on_overflow */
345 ppc64_elf_ha_reloc, /* special_function */
346 "R_PPC64_ADDR16_HA", /* name */
347 FALSE, /* partial_inplace */
349 0xffff, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* An absolute 16 bit branch; the lower two bits must be zero.
353 FIXME: we don't check that, we just clear them. */
354 HOWTO (R_PPC64_ADDR14, /* type */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
358 FALSE, /* pc_relative */
360 complain_overflow_signed, /* complain_on_overflow */
361 ppc64_elf_branch_reloc, /* special_function */
362 "R_PPC64_ADDR14", /* name */
363 FALSE, /* partial_inplace */
365 0x0000fffc, /* dst_mask */
366 FALSE), /* pcrel_offset */
368 /* An absolute 16 bit branch, for which bit 10 should be set to
369 indicate that the branch is expected to be taken. The lower two
370 bits must be zero. */
371 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
375 FALSE, /* pc_relative */
377 complain_overflow_signed, /* complain_on_overflow */
378 ppc64_elf_brtaken_reloc, /* special_function */
379 "R_PPC64_ADDR14_BRTAKEN",/* name */
380 FALSE, /* partial_inplace */
382 0x0000fffc, /* dst_mask */
383 FALSE), /* pcrel_offset */
385 /* An absolute 16 bit branch, for which bit 10 should be set to
386 indicate that the branch is not expected to be taken. The lower
387 two bits must be zero. */
388 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
392 FALSE, /* pc_relative */
394 complain_overflow_signed, /* complain_on_overflow */
395 ppc64_elf_brtaken_reloc, /* special_function */
396 "R_PPC64_ADDR14_BRNTAKEN",/* name */
397 FALSE, /* partial_inplace */
399 0x0000fffc, /* dst_mask */
400 FALSE), /* pcrel_offset */
402 /* A relative 26 bit branch; the lower two bits must be zero. */
403 HOWTO (R_PPC64_REL24, /* type */
405 2, /* size (0 = byte, 1 = short, 2 = long) */
407 TRUE, /* pc_relative */
409 complain_overflow_signed, /* complain_on_overflow */
410 ppc64_elf_branch_reloc, /* special_function */
411 "R_PPC64_REL24", /* name */
412 FALSE, /* partial_inplace */
414 0x03fffffc, /* dst_mask */
415 TRUE), /* pcrel_offset */
417 /* A relative 16 bit branch; the lower two bits must be zero. */
418 HOWTO (R_PPC64_REL14, /* type */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
422 TRUE, /* pc_relative */
424 complain_overflow_signed, /* complain_on_overflow */
425 ppc64_elf_branch_reloc, /* special_function */
426 "R_PPC64_REL14", /* name */
427 FALSE, /* partial_inplace */
429 0x0000fffc, /* dst_mask */
430 TRUE), /* pcrel_offset */
432 /* A relative 16 bit branch. Bit 10 should be set to indicate that
433 the branch is expected to be taken. The lower two bits must be
435 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
437 2, /* size (0 = byte, 1 = short, 2 = long) */
439 TRUE, /* pc_relative */
441 complain_overflow_signed, /* complain_on_overflow */
442 ppc64_elf_brtaken_reloc, /* special_function */
443 "R_PPC64_REL14_BRTAKEN", /* name */
444 FALSE, /* partial_inplace */
446 0x0000fffc, /* dst_mask */
447 TRUE), /* pcrel_offset */
449 /* A relative 16 bit branch. Bit 10 should be set to indicate that
450 the branch is not expected to be taken. The lower two bits must
452 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
454 2, /* size (0 = byte, 1 = short, 2 = long) */
456 TRUE, /* pc_relative */
458 complain_overflow_signed, /* complain_on_overflow */
459 ppc64_elf_brtaken_reloc, /* special_function */
460 "R_PPC64_REL14_BRNTAKEN",/* name */
461 FALSE, /* partial_inplace */
463 0x0000fffc, /* dst_mask */
464 TRUE), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
468 HOWTO (R_PPC64_GOT16, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_signed, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc, /* special_function */
476 "R_PPC64_GOT16", /* name */
477 FALSE, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_LO, /* 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_LO", /* name */
493 FALSE, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HI, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_signed,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc, /* special_function */
508 "R_PPC64_GOT16_HI", /* name */
509 FALSE, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
516 HOWTO (R_PPC64_GOT16_HA, /* type */
518 1, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE, /* pc_relative */
522 complain_overflow_signed,/* complain_on_overflow */
523 ppc64_elf_unhandled_reloc, /* special_function */
524 "R_PPC64_GOT16_HA", /* name */
525 FALSE, /* partial_inplace */
527 0xffff, /* dst_mask */
528 FALSE), /* pcrel_offset */
530 /* This is used only by the dynamic linker. The symbol should exist
531 both in the object being run and in some shared library. The
532 dynamic linker copies the data addressed by the symbol from the
533 shared library into the object, because the object being
534 run has to have the data at some particular address. */
535 HOWTO (R_PPC64_COPY, /* type */
537 0, /* this one is variable size */
539 FALSE, /* pc_relative */
541 complain_overflow_dont, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc, /* special_function */
543 "R_PPC64_COPY", /* name */
544 FALSE, /* partial_inplace */
547 FALSE), /* pcrel_offset */
549 /* Like R_PPC64_ADDR64, but used when setting global offset table
551 HOWTO (R_PPC64_GLOB_DAT, /* type */
553 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
555 FALSE, /* pc_relative */
557 complain_overflow_dont, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc, /* special_function */
559 "R_PPC64_GLOB_DAT", /* name */
560 FALSE, /* partial_inplace */
562 ONES (64), /* dst_mask */
563 FALSE), /* pcrel_offset */
565 /* Created by the link editor. Marks a procedure linkage table
566 entry for a symbol. */
567 HOWTO (R_PPC64_JMP_SLOT, /* type */
569 0, /* size (0 = byte, 1 = short, 2 = long) */
571 FALSE, /* pc_relative */
573 complain_overflow_dont, /* complain_on_overflow */
574 ppc64_elf_unhandled_reloc, /* special_function */
575 "R_PPC64_JMP_SLOT", /* name */
576 FALSE, /* partial_inplace */
579 FALSE), /* pcrel_offset */
581 /* Used only by the dynamic linker. When the object is run, this
582 doubleword64 is set to the load address of the object, plus the
584 HOWTO (R_PPC64_RELATIVE, /* type */
586 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
588 FALSE, /* pc_relative */
590 complain_overflow_dont, /* complain_on_overflow */
591 bfd_elf_generic_reloc, /* special_function */
592 "R_PPC64_RELATIVE", /* name */
593 FALSE, /* partial_inplace */
595 ONES (64), /* dst_mask */
596 FALSE), /* pcrel_offset */
598 /* Like R_PPC64_ADDR32, but may be unaligned. */
599 HOWTO (R_PPC64_UADDR32, /* type */
601 2, /* size (0 = byte, 1 = short, 2 = long) */
603 FALSE, /* pc_relative */
605 complain_overflow_bitfield, /* complain_on_overflow */
606 bfd_elf_generic_reloc, /* special_function */
607 "R_PPC64_UADDR32", /* name */
608 FALSE, /* partial_inplace */
610 0xffffffff, /* dst_mask */
611 FALSE), /* pcrel_offset */
613 /* Like R_PPC64_ADDR16, but may be unaligned. */
614 HOWTO (R_PPC64_UADDR16, /* type */
616 1, /* size (0 = byte, 1 = short, 2 = long) */
618 FALSE, /* pc_relative */
620 complain_overflow_bitfield, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_UADDR16", /* name */
623 FALSE, /* partial_inplace */
625 0xffff, /* dst_mask */
626 FALSE), /* pcrel_offset */
628 /* 32-bit PC relative. */
629 HOWTO (R_PPC64_REL32, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 TRUE, /* pc_relative */
635 complain_overflow_signed, /* complain_on_overflow */
636 bfd_elf_generic_reloc, /* special_function */
637 "R_PPC64_REL32", /* name */
638 FALSE, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 TRUE), /* pcrel_offset */
643 /* 32-bit relocation to the symbol's procedure linkage table. */
644 HOWTO (R_PPC64_PLT32, /* type */
646 2, /* size (0 = byte, 1 = short, 2 = long) */
648 FALSE, /* pc_relative */
650 complain_overflow_bitfield, /* complain_on_overflow */
651 ppc64_elf_unhandled_reloc, /* special_function */
652 "R_PPC64_PLT32", /* name */
653 FALSE, /* partial_inplace */
655 0xffffffff, /* dst_mask */
656 FALSE), /* pcrel_offset */
658 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
659 FIXME: R_PPC64_PLTREL32 not supported. */
660 HOWTO (R_PPC64_PLTREL32, /* type */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
664 TRUE, /* pc_relative */
666 complain_overflow_signed, /* complain_on_overflow */
667 bfd_elf_generic_reloc, /* special_function */
668 "R_PPC64_PLTREL32", /* name */
669 FALSE, /* partial_inplace */
671 0xffffffff, /* dst_mask */
672 TRUE), /* pcrel_offset */
674 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
676 HOWTO (R_PPC64_PLT16_LO, /* type */
678 1, /* size (0 = byte, 1 = short, 2 = long) */
680 FALSE, /* pc_relative */
682 complain_overflow_dont, /* complain_on_overflow */
683 ppc64_elf_unhandled_reloc, /* special_function */
684 "R_PPC64_PLT16_LO", /* name */
685 FALSE, /* partial_inplace */
687 0xffff, /* dst_mask */
688 FALSE), /* pcrel_offset */
690 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
692 HOWTO (R_PPC64_PLT16_HI, /* type */
694 1, /* size (0 = byte, 1 = short, 2 = long) */
696 FALSE, /* pc_relative */
698 complain_overflow_signed, /* complain_on_overflow */
699 ppc64_elf_unhandled_reloc, /* special_function */
700 "R_PPC64_PLT16_HI", /* name */
701 FALSE, /* partial_inplace */
703 0xffff, /* dst_mask */
704 FALSE), /* pcrel_offset */
706 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
708 HOWTO (R_PPC64_PLT16_HA, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE, /* pc_relative */
714 complain_overflow_signed, /* complain_on_overflow */
715 ppc64_elf_unhandled_reloc, /* special_function */
716 "R_PPC64_PLT16_HA", /* name */
717 FALSE, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE), /* pcrel_offset */
722 /* 16-bit section relative relocation. */
723 HOWTO (R_PPC64_SECTOFF, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_signed, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc, /* special_function */
731 "R_PPC64_SECTOFF", /* name */
732 FALSE, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* Like R_PPC64_SECTOFF, but no overflow warning. */
738 HOWTO (R_PPC64_SECTOFF_LO, /* 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_LO", /* name */
747 FALSE, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE), /* pcrel_offset */
752 /* 16-bit upper half section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HI, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE, /* pc_relative */
759 complain_overflow_signed, /* complain_on_overflow */
760 ppc64_elf_sectoff_reloc, /* special_function */
761 "R_PPC64_SECTOFF_HI", /* name */
762 FALSE, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE), /* pcrel_offset */
767 /* 16-bit upper half adjusted section relative relocation. */
768 HOWTO (R_PPC64_SECTOFF_HA, /* type */
770 1, /* size (0 = byte, 1 = short, 2 = long) */
772 FALSE, /* pc_relative */
774 complain_overflow_signed, /* complain_on_overflow */
775 ppc64_elf_sectoff_ha_reloc, /* special_function */
776 "R_PPC64_SECTOFF_HA", /* name */
777 FALSE, /* partial_inplace */
779 0xffff, /* dst_mask */
780 FALSE), /* pcrel_offset */
782 /* Like R_PPC64_REL24 without touching the two least significant bits. */
783 HOWTO (R_PPC64_REL30, /* type */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
787 TRUE, /* pc_relative */
789 complain_overflow_dont, /* complain_on_overflow */
790 bfd_elf_generic_reloc, /* special_function */
791 "R_PPC64_REL30", /* name */
792 FALSE, /* partial_inplace */
794 0xfffffffc, /* dst_mask */
795 TRUE), /* pcrel_offset */
797 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
799 /* A standard 64-bit relocation. */
800 HOWTO (R_PPC64_ADDR64, /* type */
802 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
804 FALSE, /* pc_relative */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_PPC64_ADDR64", /* name */
809 FALSE, /* partial_inplace */
811 ONES (64), /* dst_mask */
812 FALSE), /* pcrel_offset */
814 /* The bits 32-47 of an address. */
815 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
817 1, /* size (0 = byte, 1 = short, 2 = long) */
819 FALSE, /* pc_relative */
821 complain_overflow_dont, /* complain_on_overflow */
822 bfd_elf_generic_reloc, /* special_function */
823 "R_PPC64_ADDR16_HIGHER", /* name */
824 FALSE, /* partial_inplace */
826 0xffff, /* dst_mask */
827 FALSE), /* pcrel_offset */
829 /* The bits 32-47 of an address, plus 1 if the contents of the low
830 16 bits, treated as a signed number, is negative. */
831 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 ppc64_elf_ha_reloc, /* special_function */
839 "R_PPC64_ADDR16_HIGHERA", /* name */
840 FALSE, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* The bits 48-63 of an address. */
846 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
848 1, /* size (0 = byte, 1 = short, 2 = long) */
850 FALSE, /* pc_relative */
852 complain_overflow_dont, /* complain_on_overflow */
853 bfd_elf_generic_reloc, /* special_function */
854 "R_PPC64_ADDR16_HIGHEST", /* name */
855 FALSE, /* partial_inplace */
857 0xffff, /* dst_mask */
858 FALSE), /* pcrel_offset */
860 /* The bits 48-63 of an address, plus 1 if the contents of the low
861 16 bits, treated as a signed number, is negative. */
862 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
864 1, /* size (0 = byte, 1 = short, 2 = long) */
866 FALSE, /* pc_relative */
868 complain_overflow_dont, /* complain_on_overflow */
869 ppc64_elf_ha_reloc, /* special_function */
870 "R_PPC64_ADDR16_HIGHESTA", /* name */
871 FALSE, /* partial_inplace */
873 0xffff, /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* Like ADDR64, but may be unaligned. */
877 HOWTO (R_PPC64_UADDR64, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 FALSE, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_UADDR64", /* name */
886 FALSE, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 FALSE), /* pcrel_offset */
891 /* 64-bit relative relocation. */
892 HOWTO (R_PPC64_REL64, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 TRUE, /* pc_relative */
898 complain_overflow_dont, /* complain_on_overflow */
899 bfd_elf_generic_reloc, /* special_function */
900 "R_PPC64_REL64", /* name */
901 FALSE, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 TRUE), /* pcrel_offset */
906 /* 64-bit relocation to the symbol's procedure linkage table. */
907 HOWTO (R_PPC64_PLT64, /* type */
909 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
911 FALSE, /* pc_relative */
913 complain_overflow_dont, /* complain_on_overflow */
914 ppc64_elf_unhandled_reloc, /* special_function */
915 "R_PPC64_PLT64", /* name */
916 FALSE, /* partial_inplace */
918 ONES (64), /* dst_mask */
919 FALSE), /* pcrel_offset */
921 /* 64-bit PC relative relocation to the symbol's procedure linkage
923 /* FIXME: R_PPC64_PLTREL64 not supported. */
924 HOWTO (R_PPC64_PLTREL64, /* type */
926 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
928 TRUE, /* pc_relative */
930 complain_overflow_dont, /* complain_on_overflow */
931 ppc64_elf_unhandled_reloc, /* special_function */
932 "R_PPC64_PLTREL64", /* name */
933 FALSE, /* partial_inplace */
935 ONES (64), /* dst_mask */
936 TRUE), /* pcrel_offset */
938 /* 16 bit TOC-relative relocation. */
940 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
941 HOWTO (R_PPC64_TOC16, /* type */
943 1, /* size (0 = byte, 1 = short, 2 = long) */
945 FALSE, /* pc_relative */
947 complain_overflow_signed, /* complain_on_overflow */
948 ppc64_elf_toc_reloc, /* special_function */
949 "R_PPC64_TOC16", /* name */
950 FALSE, /* partial_inplace */
952 0xffff, /* dst_mask */
953 FALSE), /* pcrel_offset */
955 /* 16 bit TOC-relative relocation without overflow. */
957 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
958 HOWTO (R_PPC64_TOC16_LO, /* type */
960 1, /* size (0 = byte, 1 = short, 2 = long) */
962 FALSE, /* pc_relative */
964 complain_overflow_dont, /* complain_on_overflow */
965 ppc64_elf_toc_reloc, /* special_function */
966 "R_PPC64_TOC16_LO", /* name */
967 FALSE, /* partial_inplace */
969 0xffff, /* dst_mask */
970 FALSE), /* pcrel_offset */
972 /* 16 bit TOC-relative relocation, high 16 bits. */
974 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
975 HOWTO (R_PPC64_TOC16_HI, /* type */
977 1, /* size (0 = byte, 1 = short, 2 = long) */
979 FALSE, /* pc_relative */
981 complain_overflow_signed, /* complain_on_overflow */
982 ppc64_elf_toc_reloc, /* special_function */
983 "R_PPC64_TOC16_HI", /* name */
984 FALSE, /* partial_inplace */
986 0xffff, /* dst_mask */
987 FALSE), /* pcrel_offset */
989 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
990 contents of the low 16 bits, treated as a signed number, is
993 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
994 HOWTO (R_PPC64_TOC16_HA, /* type */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE, /* pc_relative */
1000 complain_overflow_signed, /* complain_on_overflow */
1001 ppc64_elf_toc_ha_reloc, /* special_function */
1002 "R_PPC64_TOC16_HA", /* name */
1003 FALSE, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1008 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1010 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1011 HOWTO (R_PPC64_TOC, /* type */
1013 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1015 FALSE, /* pc_relative */
1017 complain_overflow_dont, /* complain_on_overflow */
1018 ppc64_elf_toc64_reloc, /* special_function */
1019 "R_PPC64_TOC", /* name */
1020 FALSE, /* partial_inplace */
1022 ONES (64), /* dst_mask */
1023 FALSE), /* pcrel_offset */
1025 /* Like R_PPC64_GOT16, but also informs the link editor that the
1026 value to relocate may (!) refer to a PLT entry which the link
1027 editor (a) may replace with the symbol value. If the link editor
1028 is unable to fully resolve the symbol, it may (b) create a PLT
1029 entry and store the address to the new PLT entry in the GOT.
1030 This permits lazy resolution of function symbols at run time.
1031 The link editor may also skip all of this and just (c) emit a
1032 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1033 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1034 HOWTO (R_PPC64_PLTGOT16, /* type */
1036 1, /* size (0 = byte, 1 = short, 2 = long) */
1038 FALSE, /* pc_relative */
1040 complain_overflow_signed, /* complain_on_overflow */
1041 ppc64_elf_unhandled_reloc, /* special_function */
1042 "R_PPC64_PLTGOT16", /* name */
1043 FALSE, /* partial_inplace */
1045 0xffff, /* dst_mask */
1046 FALSE), /* pcrel_offset */
1048 /* Like R_PPC64_PLTGOT16, but without overflow. */
1049 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1050 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE, /* pc_relative */
1056 complain_overflow_dont, /* complain_on_overflow */
1057 ppc64_elf_unhandled_reloc, /* special_function */
1058 "R_PPC64_PLTGOT16_LO", /* name */
1059 FALSE, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1064 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1065 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1066 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1067 16, /* rightshift */
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 FALSE, /* pc_relative */
1072 complain_overflow_signed, /* complain_on_overflow */
1073 ppc64_elf_unhandled_reloc, /* special_function */
1074 "R_PPC64_PLTGOT16_HI", /* name */
1075 FALSE, /* partial_inplace */
1077 0xffff, /* dst_mask */
1078 FALSE), /* pcrel_offset */
1080 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1081 1 if the contents of the low 16 bits, treated as a signed number,
1083 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1084 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1085 16, /* rightshift */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE, /* pc_relative */
1090 complain_overflow_signed, /* complain_on_overflow */
1091 ppc64_elf_unhandled_reloc, /* special_function */
1092 "R_PPC64_PLTGOT16_HA", /* name */
1093 FALSE, /* partial_inplace */
1095 0xffff, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_DS, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE, /* pc_relative */
1105 complain_overflow_signed, /* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_PPC64_ADDR16_DS", /* name */
1108 FALSE, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1113 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE, /* pc_relative */
1120 complain_overflow_dont,/* complain_on_overflow */
1121 bfd_elf_generic_reloc, /* special_function */
1122 "R_PPC64_ADDR16_LO_DS",/* name */
1123 FALSE, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_DS, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE, /* pc_relative */
1135 complain_overflow_signed, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_GOT16_DS", /* name */
1138 FALSE, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1143 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_GOT16_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_GOT16_LO_DS", /* name */
1153 FALSE, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1158 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE, /* pc_relative */
1165 complain_overflow_dont, /* complain_on_overflow */
1166 ppc64_elf_unhandled_reloc, /* special_function */
1167 "R_PPC64_PLT16_LO_DS", /* name */
1168 FALSE, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE, /* pc_relative */
1180 complain_overflow_signed, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc, /* special_function */
1182 "R_PPC64_SECTOFF_DS", /* name */
1183 FALSE, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1188 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE, /* pc_relative */
1195 complain_overflow_dont, /* complain_on_overflow */
1196 ppc64_elf_sectoff_reloc, /* special_function */
1197 "R_PPC64_SECTOFF_LO_DS",/* name */
1198 FALSE, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_DS, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE, /* pc_relative */
1210 complain_overflow_signed, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc, /* special_function */
1212 "R_PPC64_TOC16_DS", /* name */
1213 FALSE, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1218 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1219 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1221 1, /* size (0 = byte, 1 = short, 2 = long) */
1223 FALSE, /* pc_relative */
1225 complain_overflow_dont, /* complain_on_overflow */
1226 ppc64_elf_toc_reloc, /* special_function */
1227 "R_PPC64_TOC16_LO_DS", /* name */
1228 FALSE, /* partial_inplace */
1230 0xfffc, /* dst_mask */
1231 FALSE), /* pcrel_offset */
1233 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1234 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1235 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1237 1, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE, /* pc_relative */
1241 complain_overflow_signed, /* complain_on_overflow */
1242 ppc64_elf_unhandled_reloc, /* special_function */
1243 "R_PPC64_PLTGOT16_DS", /* name */
1244 FALSE, /* partial_inplace */
1246 0xfffc, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1249 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1250 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1251 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1253 1, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE, /* pc_relative */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 ppc64_elf_unhandled_reloc, /* special_function */
1259 "R_PPC64_PLTGOT16_LO_DS",/* name */
1260 FALSE, /* partial_inplace */
1262 0xfffc, /* dst_mask */
1263 FALSE), /* pcrel_offset */
1265 /* Marker relocs for TLS. */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE, /* pc_relative */
1272 complain_overflow_dont, /* complain_on_overflow */
1273 bfd_elf_generic_reloc, /* special_function */
1274 "R_PPC64_TLS", /* name */
1275 FALSE, /* partial_inplace */
1278 FALSE), /* pcrel_offset */
1280 HOWTO (R_PPC64_TLSGD,
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE, /* pc_relative */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_PPC64_TLSGD", /* name */
1289 FALSE, /* partial_inplace */
1292 FALSE), /* pcrel_offset */
1294 HOWTO (R_PPC64_TLSLD,
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE, /* pc_relative */
1300 complain_overflow_dont, /* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_PPC64_TLSLD", /* name */
1303 FALSE, /* partial_inplace */
1306 FALSE), /* pcrel_offset */
1308 HOWTO (R_PPC64_TOCSAVE,
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE, /* pc_relative */
1314 complain_overflow_dont, /* complain_on_overflow */
1315 bfd_elf_generic_reloc, /* special_function */
1316 "R_PPC64_TOCSAVE", /* name */
1317 FALSE, /* partial_inplace */
1320 FALSE), /* pcrel_offset */
1322 /* Computes the load module index of the load module that contains the
1323 definition of its TLS sym. */
1324 HOWTO (R_PPC64_DTPMOD64,
1326 4, /* size (0 = byte, 1 = short, 2 = long) */
1328 FALSE, /* pc_relative */
1330 complain_overflow_dont, /* complain_on_overflow */
1331 ppc64_elf_unhandled_reloc, /* special_function */
1332 "R_PPC64_DTPMOD64", /* name */
1333 FALSE, /* partial_inplace */
1335 ONES (64), /* dst_mask */
1336 FALSE), /* pcrel_offset */
1338 /* Computes a dtv-relative displacement, the difference between the value
1339 of sym+add and the base address of the thread-local storage block that
1340 contains the definition of sym, minus 0x8000. */
1341 HOWTO (R_PPC64_DTPREL64,
1343 4, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_dont, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL64", /* name */
1350 FALSE, /* partial_inplace */
1352 ONES (64), /* dst_mask */
1353 FALSE), /* pcrel_offset */
1355 /* A 16 bit dtprel reloc. */
1356 HOWTO (R_PPC64_DTPREL16,
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_signed, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16", /* name */
1365 FALSE, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1370 /* Like DTPREL16, but no overflow. */
1371 HOWTO (R_PPC64_DTPREL16_LO,
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_LO", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HI,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_signed, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HI", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HA,
1402 16, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_signed, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HA", /* name */
1410 FALSE, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHER,
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_HIGHER", /* name */
1425 FALSE, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1432 32, /* 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_HIGHERA", /* name */
1440 FALSE, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHEST,
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_HIGHEST", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1460 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1461 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1462 48, /* rightshift */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_dont, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1470 FALSE, /* partial_inplace */
1472 0xffff, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1475 /* Like DTPREL16, but for insns with a DS field. */
1476 HOWTO (R_PPC64_DTPREL16_DS,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_signed, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_DS", /* name */
1485 FALSE, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1490 /* Like DTPREL16_DS, but no overflow. */
1491 HOWTO (R_PPC64_DTPREL16_LO_DS,
1493 1, /* size (0 = byte, 1 = short, 2 = long) */
1495 FALSE, /* pc_relative */
1497 complain_overflow_dont, /* complain_on_overflow */
1498 ppc64_elf_unhandled_reloc, /* special_function */
1499 "R_PPC64_DTPREL16_LO_DS", /* name */
1500 FALSE, /* partial_inplace */
1502 0xfffc, /* dst_mask */
1503 FALSE), /* pcrel_offset */
1505 /* Computes a tp-relative displacement, the difference between the value of
1506 sym+add and the value of the thread pointer (r13). */
1507 HOWTO (R_PPC64_TPREL64,
1509 4, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_dont, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL64", /* name */
1516 FALSE, /* partial_inplace */
1518 ONES (64), /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* A 16 bit tprel reloc. */
1522 HOWTO (R_PPC64_TPREL16,
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_signed, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16", /* name */
1531 FALSE, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* Like TPREL16, but no overflow. */
1537 HOWTO (R_PPC64_TPREL16_LO,
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_LO", /* name */
1546 FALSE, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1551 /* Like TPREL16_LO, but next higher group of 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HI,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE, /* pc_relative */
1558 complain_overflow_signed, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HI", /* name */
1561 FALSE, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1566 /* Like TPREL16_HI, but adjust for low 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HA,
1568 16, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE, /* pc_relative */
1573 complain_overflow_signed, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HA", /* name */
1576 FALSE, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1581 /* Like TPREL16_HI, but next higher group of 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHER,
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_HIGHER", /* name */
1591 FALSE, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHERA,
1598 32, /* 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_HIGHERA", /* name */
1606 FALSE, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1611 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHEST,
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_HIGHEST", /* name */
1621 FALSE, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1626 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1627 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1628 48, /* rightshift */
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE, /* pc_relative */
1633 complain_overflow_dont, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_HIGHESTA", /* name */
1636 FALSE, /* partial_inplace */
1638 0xffff, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1641 /* Like TPREL16, but for insns with a DS field. */
1642 HOWTO (R_PPC64_TPREL16_DS,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE, /* pc_relative */
1648 complain_overflow_signed, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_DS", /* name */
1651 FALSE, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1656 /* Like TPREL16_DS, but no overflow. */
1657 HOWTO (R_PPC64_TPREL16_LO_DS,
1659 1, /* size (0 = byte, 1 = short, 2 = long) */
1661 FALSE, /* pc_relative */
1663 complain_overflow_dont, /* complain_on_overflow */
1664 ppc64_elf_unhandled_reloc, /* special_function */
1665 "R_PPC64_TPREL16_LO_DS", /* name */
1666 FALSE, /* partial_inplace */
1668 0xfffc, /* dst_mask */
1669 FALSE), /* pcrel_offset */
1671 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1672 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1673 to the first entry relative to the TOC base (r2). */
1674 HOWTO (R_PPC64_GOT_TLSGD16,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_signed, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_GOT_TLSGD16", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* Like GOT_TLSGD16, but no overflow. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_LO,
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_LO", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_signed, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HI", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1718 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1719 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 FALSE, /* pc_relative */
1725 complain_overflow_signed, /* complain_on_overflow */
1726 ppc64_elf_unhandled_reloc, /* special_function */
1727 "R_PPC64_GOT_TLSGD16_HA", /* name */
1728 FALSE, /* partial_inplace */
1730 0xffff, /* dst_mask */
1731 FALSE), /* pcrel_offset */
1733 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1734 with values (sym+add)@dtpmod and zero, and computes the offset to the
1735 first entry relative to the TOC base (r2). */
1736 HOWTO (R_PPC64_GOT_TLSLD16,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE, /* pc_relative */
1742 complain_overflow_signed, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSLD16", /* name */
1745 FALSE, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1750 /* Like GOT_TLSLD16, but no overflow. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_LO,
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_LO", /* name */
1760 FALSE, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE, /* pc_relative */
1772 complain_overflow_signed, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HI", /* name */
1775 FALSE, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1781 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1782 16, /* rightshift */
1783 1, /* size (0 = byte, 1 = short, 2 = long) */
1785 FALSE, /* pc_relative */
1787 complain_overflow_signed, /* complain_on_overflow */
1788 ppc64_elf_unhandled_reloc, /* special_function */
1789 "R_PPC64_GOT_TLSLD16_HA", /* name */
1790 FALSE, /* partial_inplace */
1792 0xffff, /* dst_mask */
1793 FALSE), /* pcrel_offset */
1795 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1796 the offset to the entry relative to the TOC base (r2). */
1797 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE, /* pc_relative */
1803 complain_overflow_signed, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_DS", /* name */
1806 FALSE, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_DS, but no overflow. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
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_LO_DS", /* name */
1821 FALSE, /* partial_inplace */
1823 0xfffc, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE, /* pc_relative */
1833 complain_overflow_signed, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HI", /* name */
1836 FALSE, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE), /* pcrel_offset */
1841 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1842 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1843 16, /* rightshift */
1844 1, /* size (0 = byte, 1 = short, 2 = long) */
1846 FALSE, /* pc_relative */
1848 complain_overflow_signed, /* complain_on_overflow */
1849 ppc64_elf_unhandled_reloc, /* special_function */
1850 "R_PPC64_GOT_DTPREL16_HA", /* name */
1851 FALSE, /* partial_inplace */
1853 0xffff, /* dst_mask */
1854 FALSE), /* pcrel_offset */
1856 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1857 offset to the entry relative to the TOC base (r2). */
1858 HOWTO (R_PPC64_GOT_TPREL16_DS,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE, /* pc_relative */
1864 complain_overflow_signed, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc, /* special_function */
1866 "R_PPC64_GOT_TPREL16_DS", /* name */
1867 FALSE, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE), /* pcrel_offset */
1872 /* Like GOT_TPREL16_DS, but no overflow. */
1873 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
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_LO_DS", /* name */
1882 FALSE, /* partial_inplace */
1884 0xfffc, /* dst_mask */
1885 FALSE), /* pcrel_offset */
1887 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HI,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE, /* pc_relative */
1894 complain_overflow_signed, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HI", /* name */
1897 FALSE, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE), /* pcrel_offset */
1902 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1903 HOWTO (R_PPC64_GOT_TPREL16_HA,
1904 16, /* rightshift */
1905 1, /* size (0 = byte, 1 = short, 2 = long) */
1907 FALSE, /* pc_relative */
1909 complain_overflow_signed, /* complain_on_overflow */
1910 ppc64_elf_unhandled_reloc, /* special_function */
1911 "R_PPC64_GOT_TPREL16_HA", /* name */
1912 FALSE, /* partial_inplace */
1914 0xffff, /* dst_mask */
1915 FALSE), /* pcrel_offset */
1917 HOWTO (R_PPC64_JMP_IREL, /* type */
1919 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1921 FALSE, /* pc_relative */
1923 complain_overflow_dont, /* complain_on_overflow */
1924 ppc64_elf_unhandled_reloc, /* special_function */
1925 "R_PPC64_JMP_IREL", /* name */
1926 FALSE, /* partial_inplace */
1929 FALSE), /* pcrel_offset */
1931 HOWTO (R_PPC64_IRELATIVE, /* type */
1933 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1935 FALSE, /* pc_relative */
1937 complain_overflow_dont, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 "R_PPC64_IRELATIVE", /* name */
1940 FALSE, /* partial_inplace */
1942 ONES (64), /* dst_mask */
1943 FALSE), /* pcrel_offset */
1945 /* A 16 bit relative relocation. */
1946 HOWTO (R_PPC64_REL16, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE, /* pc_relative */
1952 complain_overflow_signed, /* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_REL16", /* name */
1955 FALSE, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE), /* pcrel_offset */
1960 /* A 16 bit relative relocation without overflow. */
1961 HOWTO (R_PPC64_REL16_LO, /* type */
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_LO", /* name */
1970 FALSE, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address. */
1976 HOWTO (R_PPC64_REL16_HI, /* type */
1977 16, /* rightshift */
1978 1, /* size (0 = byte, 1 = short, 2 = long) */
1980 TRUE, /* pc_relative */
1982 complain_overflow_signed, /* complain_on_overflow */
1983 bfd_elf_generic_reloc, /* special_function */
1984 "R_PPC64_REL16_HI", /* name */
1985 FALSE, /* partial_inplace */
1987 0xffff, /* dst_mask */
1988 TRUE), /* pcrel_offset */
1990 /* The high order 16 bits of a relative address, plus 1 if the contents of
1991 the low 16 bits, treated as a signed number, is negative. */
1992 HOWTO (R_PPC64_REL16_HA, /* type */
1993 16, /* rightshift */
1994 1, /* size (0 = byte, 1 = short, 2 = long) */
1996 TRUE, /* pc_relative */
1998 complain_overflow_signed, /* complain_on_overflow */
1999 ppc64_elf_ha_reloc, /* special_function */
2000 "R_PPC64_REL16_HA", /* name */
2001 FALSE, /* partial_inplace */
2003 0xffff, /* dst_mask */
2004 TRUE), /* pcrel_offset */
2006 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2007 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2008 16, /* rightshift */
2009 1, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE, /* pc_relative */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 bfd_elf_generic_reloc, /* special_function */
2015 "R_PPC64_ADDR16_HIGH", /* name */
2016 FALSE, /* partial_inplace */
2018 0xffff, /* dst_mask */
2019 FALSE), /* pcrel_offset */
2021 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2022 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2023 16, /* rightshift */
2024 1, /* size (0 = byte, 1 = short, 2 = long) */
2026 FALSE, /* pc_relative */
2028 complain_overflow_dont, /* complain_on_overflow */
2029 ppc64_elf_ha_reloc, /* special_function */
2030 "R_PPC64_ADDR16_HIGHA", /* name */
2031 FALSE, /* partial_inplace */
2033 0xffff, /* dst_mask */
2034 FALSE), /* pcrel_offset */
2036 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2037 HOWTO (R_PPC64_DTPREL16_HIGH,
2038 16, /* rightshift */
2039 1, /* size (0 = byte, 1 = short, 2 = long) */
2041 FALSE, /* pc_relative */
2043 complain_overflow_dont, /* complain_on_overflow */
2044 ppc64_elf_unhandled_reloc, /* special_function */
2045 "R_PPC64_DTPREL16_HIGH", /* name */
2046 FALSE, /* partial_inplace */
2048 0xffff, /* dst_mask */
2049 FALSE), /* pcrel_offset */
2051 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2052 HOWTO (R_PPC64_DTPREL16_HIGHA,
2053 16, /* rightshift */
2054 1, /* size (0 = byte, 1 = short, 2 = long) */
2056 FALSE, /* pc_relative */
2058 complain_overflow_dont, /* complain_on_overflow */
2059 ppc64_elf_unhandled_reloc, /* special_function */
2060 "R_PPC64_DTPREL16_HIGHA", /* name */
2061 FALSE, /* partial_inplace */
2063 0xffff, /* dst_mask */
2064 FALSE), /* pcrel_offset */
2066 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2067 HOWTO (R_PPC64_TPREL16_HIGH,
2068 16, /* rightshift */
2069 1, /* size (0 = byte, 1 = short, 2 = long) */
2071 FALSE, /* pc_relative */
2073 complain_overflow_dont, /* complain_on_overflow */
2074 ppc64_elf_unhandled_reloc, /* special_function */
2075 "R_PPC64_TPREL16_HIGH", /* name */
2076 FALSE, /* partial_inplace */
2078 0xffff, /* dst_mask */
2079 FALSE), /* pcrel_offset */
2081 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2082 HOWTO (R_PPC64_TPREL16_HIGHA,
2083 16, /* rightshift */
2084 1, /* size (0 = byte, 1 = short, 2 = long) */
2086 FALSE, /* pc_relative */
2088 complain_overflow_dont, /* complain_on_overflow */
2089 ppc64_elf_unhandled_reloc, /* special_function */
2090 "R_PPC64_TPREL16_HIGHA", /* name */
2091 FALSE, /* partial_inplace */
2093 0xffff, /* dst_mask */
2094 FALSE), /* pcrel_offset */
2096 /* Like ADDR64, but use local entry point of function. */
2097 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2099 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2101 FALSE, /* pc_relative */
2103 complain_overflow_dont, /* complain_on_overflow */
2104 bfd_elf_generic_reloc, /* special_function */
2105 "R_PPC64_ADDR64_LOCAL", /* name */
2106 FALSE, /* partial_inplace */
2108 ONES (64), /* dst_mask */
2109 FALSE), /* pcrel_offset */
2111 /* GNU extension to record C++ vtable hierarchy. */
2112 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2114 0, /* size (0 = byte, 1 = short, 2 = long) */
2116 FALSE, /* pc_relative */
2118 complain_overflow_dont, /* complain_on_overflow */
2119 NULL, /* special_function */
2120 "R_PPC64_GNU_VTINHERIT", /* name */
2121 FALSE, /* partial_inplace */
2124 FALSE), /* pcrel_offset */
2126 /* GNU extension to record C++ vtable member usage. */
2127 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2129 0, /* size (0 = byte, 1 = short, 2 = long) */
2131 FALSE, /* pc_relative */
2133 complain_overflow_dont, /* complain_on_overflow */
2134 NULL, /* special_function */
2135 "R_PPC64_GNU_VTENTRY", /* name */
2136 FALSE, /* partial_inplace */
2139 FALSE), /* pcrel_offset */
2143 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2147 ppc_howto_init (void)
2149 unsigned int i, type;
2152 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2155 type = ppc64_elf_howto_raw[i].type;
2156 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2157 / sizeof (ppc64_elf_howto_table[0])));
2158 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2162 static reloc_howto_type *
2163 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2164 bfd_reloc_code_real_type code)
2166 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2168 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2169 /* Initialize howto table if needed. */
2177 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2179 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2181 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2183 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2185 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2187 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2189 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2191 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2193 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2195 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2197 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2199 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2201 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2203 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2205 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2207 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2209 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2211 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2213 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2215 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2217 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2219 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2221 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2223 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2225 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2227 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2229 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2231 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2233 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2235 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2237 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2239 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2241 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2243 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2245 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2247 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2249 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2251 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2253 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2255 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2257 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2259 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2261 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2263 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2265 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2267 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2269 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2271 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2273 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2275 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2277 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2279 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2281 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2283 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2285 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2287 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2289 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2291 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2293 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2295 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2297 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2299 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2301 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2303 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2305 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2307 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2309 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2311 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2313 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2315 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2317 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2319 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2321 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2323 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2325 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2327 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2329 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2331 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2333 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2335 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2337 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2339 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2341 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2343 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2345 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2347 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2349 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2351 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2353 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2355 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2357 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2359 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2361 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2363 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2365 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2367 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2369 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2371 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2373 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2375 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2377 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2379 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2381 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2383 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2385 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2387 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2389 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2391 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2393 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2395 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2397 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2399 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2401 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2403 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2407 return ppc64_elf_howto_table[r];
2410 static reloc_howto_type *
2411 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2417 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2419 if (ppc64_elf_howto_raw[i].name != NULL
2420 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2421 return &ppc64_elf_howto_raw[i];
2426 /* Set the howto pointer for a PowerPC ELF reloc. */
2429 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2430 Elf_Internal_Rela *dst)
2434 /* Initialize howto table if needed. */
2435 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2438 type = ELF64_R_TYPE (dst->r_info);
2439 if (type >= (sizeof (ppc64_elf_howto_table)
2440 / sizeof (ppc64_elf_howto_table[0])))
2442 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2444 type = R_PPC64_NONE;
2446 cache_ptr->howto = ppc64_elf_howto_table[type];
2449 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2451 static bfd_reloc_status_type
2452 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2453 void *data, asection *input_section,
2454 bfd *output_bfd, char **error_message)
2456 /* If this is a relocatable link (output_bfd test tells us), just
2457 call the generic function. Any adjustment will be done at final
2459 if (output_bfd != NULL)
2460 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2461 input_section, output_bfd, error_message);
2463 /* Adjust the addend for sign extension of the low 16 bits.
2464 We won't actually be using the low 16 bits, so trashing them
2466 reloc_entry->addend += 0x8000;
2467 return bfd_reloc_continue;
2470 static bfd_reloc_status_type
2471 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2472 void *data, asection *input_section,
2473 bfd *output_bfd, char **error_message)
2475 if (output_bfd != NULL)
2476 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2477 input_section, output_bfd, error_message);
2479 if (strcmp (symbol->section->name, ".opd") == 0
2480 && (symbol->section->owner->flags & DYNAMIC) == 0)
2482 bfd_vma dest = opd_entry_value (symbol->section,
2483 symbol->value + reloc_entry->addend,
2485 if (dest != (bfd_vma) -1)
2486 reloc_entry->addend = dest - (symbol->value
2487 + symbol->section->output_section->vma
2488 + symbol->section->output_offset);
2490 return bfd_reloc_continue;
2493 static bfd_reloc_status_type
2494 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2495 void *data, asection *input_section,
2496 bfd *output_bfd, char **error_message)
2499 enum elf_ppc64_reloc_type r_type;
2500 bfd_size_type octets;
2501 /* Assume 'at' branch hints. */
2502 bfd_boolean is_isa_v2 = TRUE;
2504 /* If this is a relocatable link (output_bfd test tells us), just
2505 call the generic function. Any adjustment will be done at final
2507 if (output_bfd != NULL)
2508 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2509 input_section, output_bfd, error_message);
2511 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2512 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2513 insn &= ~(0x01 << 21);
2514 r_type = reloc_entry->howto->type;
2515 if (r_type == R_PPC64_ADDR14_BRTAKEN
2516 || r_type == R_PPC64_REL14_BRTAKEN)
2517 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2521 /* Set 'a' bit. This is 0b00010 in BO field for branch
2522 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2523 for branch on CTR insns (BO == 1a00t or 1a01t). */
2524 if ((insn & (0x14 << 21)) == (0x04 << 21))
2526 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2536 if (!bfd_is_com_section (symbol->section))
2537 target = symbol->value;
2538 target += symbol->section->output_section->vma;
2539 target += symbol->section->output_offset;
2540 target += reloc_entry->addend;
2542 from = (reloc_entry->address
2543 + input_section->output_offset
2544 + input_section->output_section->vma);
2546 /* Invert 'y' bit if not the default. */
2547 if ((bfd_signed_vma) (target - from) < 0)
2550 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2552 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2553 input_section, output_bfd, error_message);
2556 static bfd_reloc_status_type
2557 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2558 void *data, asection *input_section,
2559 bfd *output_bfd, char **error_message)
2561 /* If this is a relocatable link (output_bfd test tells us), just
2562 call the generic function. Any adjustment will be done at final
2564 if (output_bfd != NULL)
2565 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2566 input_section, output_bfd, error_message);
2568 /* Subtract the symbol section base address. */
2569 reloc_entry->addend -= symbol->section->output_section->vma;
2570 return bfd_reloc_continue;
2573 static bfd_reloc_status_type
2574 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2575 void *data, asection *input_section,
2576 bfd *output_bfd, char **error_message)
2578 /* If this is a relocatable link (output_bfd test tells us), just
2579 call the generic function. Any adjustment will be done at final
2581 if (output_bfd != NULL)
2582 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2583 input_section, output_bfd, error_message);
2585 /* Subtract the symbol section base address. */
2586 reloc_entry->addend -= symbol->section->output_section->vma;
2588 /* Adjust the addend for sign extension of the low 16 bits. */
2589 reloc_entry->addend += 0x8000;
2590 return bfd_reloc_continue;
2593 static bfd_reloc_status_type
2594 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2595 void *data, asection *input_section,
2596 bfd *output_bfd, char **error_message)
2600 /* If this is a relocatable link (output_bfd test tells us), just
2601 call the generic function. Any adjustment will be done at final
2603 if (output_bfd != NULL)
2604 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2605 input_section, output_bfd, error_message);
2607 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2609 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2611 /* Subtract the TOC base address. */
2612 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2613 return bfd_reloc_continue;
2616 static bfd_reloc_status_type
2617 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2618 void *data, asection *input_section,
2619 bfd *output_bfd, char **error_message)
2623 /* If this is a relocatable link (output_bfd test tells us), just
2624 call the generic function. Any adjustment will be done at final
2626 if (output_bfd != NULL)
2627 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2628 input_section, output_bfd, error_message);
2630 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2632 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2634 /* Subtract the TOC base address. */
2635 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2637 /* Adjust the addend for sign extension of the low 16 bits. */
2638 reloc_entry->addend += 0x8000;
2639 return bfd_reloc_continue;
2642 static bfd_reloc_status_type
2643 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2644 void *data, asection *input_section,
2645 bfd *output_bfd, char **error_message)
2648 bfd_size_type octets;
2650 /* If this is a relocatable link (output_bfd test tells us), just
2651 call the generic function. Any adjustment will be done at final
2653 if (output_bfd != NULL)
2654 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2655 input_section, output_bfd, error_message);
2657 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2659 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2661 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2662 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2663 return bfd_reloc_ok;
2666 static bfd_reloc_status_type
2667 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2668 void *data, asection *input_section,
2669 bfd *output_bfd, char **error_message)
2671 /* If this is a relocatable link (output_bfd test tells us), just
2672 call the generic function. Any adjustment will be done at final
2674 if (output_bfd != NULL)
2675 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2676 input_section, output_bfd, error_message);
2678 if (error_message != NULL)
2680 static char buf[60];
2681 sprintf (buf, "generic linker can't handle %s",
2682 reloc_entry->howto->name);
2683 *error_message = buf;
2685 return bfd_reloc_dangerous;
2688 /* Track GOT entries needed for a given symbol. We might need more
2689 than one got entry per symbol. */
2692 struct got_entry *next;
2694 /* The symbol addend that we'll be placing in the GOT. */
2697 /* Unlike other ELF targets, we use separate GOT entries for the same
2698 symbol referenced from different input files. This is to support
2699 automatic multiple TOC/GOT sections, where the TOC base can vary
2700 from one input file to another. After partitioning into TOC groups
2701 we merge entries within the group.
2703 Point to the BFD owning this GOT entry. */
2706 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2707 TLS_TPREL or TLS_DTPREL for tls entries. */
2708 unsigned char tls_type;
2710 /* Non-zero if got.ent points to real entry. */
2711 unsigned char is_indirect;
2713 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2716 bfd_signed_vma refcount;
2718 struct got_entry *ent;
2722 /* The same for PLT. */
2725 struct plt_entry *next;
2731 bfd_signed_vma refcount;
2736 struct ppc64_elf_obj_tdata
2738 struct elf_obj_tdata elf;
2740 /* Shortcuts to dynamic linker sections. */
2744 /* Used during garbage collection. We attach global symbols defined
2745 on removed .opd entries to this section so that the sym is removed. */
2746 asection *deleted_section;
2748 /* TLS local dynamic got entry handling. Support for multiple GOT
2749 sections means we potentially need one of these for each input bfd. */
2750 struct got_entry tlsld_got;
2753 /* A copy of relocs before they are modified for --emit-relocs. */
2754 Elf_Internal_Rela *relocs;
2756 /* Section contents. */
2760 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2761 the reloc to be in the range -32768 to 32767. */
2762 unsigned int has_small_toc_reloc : 1;
2764 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2765 instruction not one we handle. */
2766 unsigned int unexpected_toc_insn : 1;
2769 #define ppc64_elf_tdata(bfd) \
2770 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2772 #define ppc64_tlsld_got(bfd) \
2773 (&ppc64_elf_tdata (bfd)->tlsld_got)
2775 #define is_ppc64_elf(bfd) \
2776 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2777 && elf_object_id (bfd) == PPC64_ELF_DATA)
2779 /* Override the generic function because we store some extras. */
2782 ppc64_elf_mkobject (bfd *abfd)
2784 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2788 /* Fix bad default arch selected for a 64 bit input bfd when the
2789 default is 32 bit. */
2792 ppc64_elf_object_p (bfd *abfd)
2794 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2796 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2798 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2800 /* Relies on arch after 32 bit default being 64 bit default. */
2801 abfd->arch_info = abfd->arch_info->next;
2802 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2808 /* Support for core dump NOTE sections. */
2811 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2813 size_t offset, size;
2815 if (note->descsz != 504)
2819 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2822 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2828 /* Make a ".reg/999" section. */
2829 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2830 size, note->descpos + offset);
2834 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2836 if (note->descsz != 136)
2839 elf_tdata (abfd)->core->pid
2840 = bfd_get_32 (abfd, note->descdata + 24);
2841 elf_tdata (abfd)->core->program
2842 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2843 elf_tdata (abfd)->core->command
2844 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2850 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2863 va_start (ap, note_type);
2864 memset (data, 0, sizeof (data));
2865 strncpy (data + 40, va_arg (ap, const char *), 16);
2866 strncpy (data + 56, va_arg (ap, const char *), 80);
2868 return elfcore_write_note (abfd, buf, bufsiz,
2869 "CORE", note_type, data, sizeof (data));
2880 va_start (ap, note_type);
2881 memset (data, 0, 112);
2882 pid = va_arg (ap, long);
2883 bfd_put_32 (abfd, pid, data + 32);
2884 cursig = va_arg (ap, int);
2885 bfd_put_16 (abfd, cursig, data + 12);
2886 greg = va_arg (ap, const void *);
2887 memcpy (data + 112, greg, 384);
2888 memset (data + 496, 0, 8);
2890 return elfcore_write_note (abfd, buf, bufsiz,
2891 "CORE", note_type, data, sizeof (data));
2896 /* Add extra PPC sections. */
2898 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2900 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2901 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2902 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2903 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2904 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2905 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2906 { NULL, 0, 0, 0, 0 }
2909 enum _ppc64_sec_type {
2915 struct _ppc64_elf_section_data
2917 struct bfd_elf_section_data elf;
2921 /* An array with one entry for each opd function descriptor. */
2922 struct _opd_sec_data
2924 /* Points to the function code section for local opd entries. */
2925 asection **func_sec;
2927 /* After editing .opd, adjust references to opd local syms. */
2931 /* An array for toc sections, indexed by offset/8. */
2932 struct _toc_sec_data
2934 /* Specifies the relocation symbol index used at a given toc offset. */
2937 /* And the relocation addend. */
2942 enum _ppc64_sec_type sec_type:2;
2944 /* Flag set when small branches are detected. Used to
2945 select suitable defaults for the stub group size. */
2946 unsigned int has_14bit_branch:1;
2949 #define ppc64_elf_section_data(sec) \
2950 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2953 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2955 if (!sec->used_by_bfd)
2957 struct _ppc64_elf_section_data *sdata;
2958 bfd_size_type amt = sizeof (*sdata);
2960 sdata = bfd_zalloc (abfd, amt);
2963 sec->used_by_bfd = sdata;
2966 return _bfd_elf_new_section_hook (abfd, sec);
2969 static struct _opd_sec_data *
2970 get_opd_info (asection * sec)
2973 && ppc64_elf_section_data (sec) != NULL
2974 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2975 return &ppc64_elf_section_data (sec)->u.opd;
2980 abiversion (bfd *abfd)
2982 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
2986 set_abiversion (bfd *abfd, int ver)
2988 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
2989 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
2992 /* Parameters for the qsort hook. */
2993 static bfd_boolean synthetic_relocatable;
2995 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2998 compare_symbols (const void *ap, const void *bp)
3000 const asymbol *a = * (const asymbol **) ap;
3001 const asymbol *b = * (const asymbol **) bp;
3003 /* Section symbols first. */
3004 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3006 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3009 /* then .opd symbols. */
3010 if (strcmp (a->section->name, ".opd") == 0
3011 && strcmp (b->section->name, ".opd") != 0)
3013 if (strcmp (a->section->name, ".opd") != 0
3014 && strcmp (b->section->name, ".opd") == 0)
3017 /* then other code symbols. */
3018 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3019 == (SEC_CODE | SEC_ALLOC)
3020 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3021 != (SEC_CODE | SEC_ALLOC))
3024 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3025 != (SEC_CODE | SEC_ALLOC)
3026 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3027 == (SEC_CODE | SEC_ALLOC))
3030 if (synthetic_relocatable)
3032 if (a->section->id < b->section->id)
3035 if (a->section->id > b->section->id)
3039 if (a->value + a->section->vma < b->value + b->section->vma)
3042 if (a->value + a->section->vma > b->value + b->section->vma)
3045 /* For syms with the same value, prefer strong dynamic global function
3046 syms over other syms. */
3047 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3050 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3053 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3056 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3059 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3062 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3065 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3068 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3074 /* Search SYMS for a symbol of the given VALUE. */
3077 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
3085 mid = (lo + hi) >> 1;
3086 if (syms[mid]->value + syms[mid]->section->vma < value)
3088 else if (syms[mid]->value + syms[mid]->section->vma > value)
3098 mid = (lo + hi) >> 1;
3099 if (syms[mid]->section->id < id)
3101 else if (syms[mid]->section->id > id)
3103 else if (syms[mid]->value < value)
3105 else if (syms[mid]->value > value)
3115 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3117 bfd_vma vma = *(bfd_vma *) ptr;
3118 return ((section->flags & SEC_ALLOC) != 0
3119 && section->vma <= vma
3120 && vma < section->vma + section->size);
3123 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3124 entry syms. Also generate @plt symbols for the glink branch table. */
3127 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3128 long static_count, asymbol **static_syms,
3129 long dyn_count, asymbol **dyn_syms,
3136 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3137 asection *opd = NULL;
3138 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3140 int abi = abiversion (abfd);
3146 opd = bfd_get_section_by_name (abfd, ".opd");
3147 if (opd == NULL && abi == 1)
3151 symcount = static_count;
3153 symcount += dyn_count;
3157 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3161 if (!relocatable && static_count != 0 && dyn_count != 0)
3163 /* Use both symbol tables. */
3164 memcpy (syms, static_syms, static_count * sizeof (*syms));
3165 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3167 else if (!relocatable && static_count == 0)
3168 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3170 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3172 synthetic_relocatable = relocatable;
3173 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3175 if (!relocatable && symcount > 1)
3178 /* Trim duplicate syms, since we may have merged the normal and
3179 dynamic symbols. Actually, we only care about syms that have
3180 different values, so trim any with the same value. */
3181 for (i = 1, j = 1; i < symcount; ++i)
3182 if (syms[i - 1]->value + syms[i - 1]->section->vma
3183 != syms[i]->value + syms[i]->section->vma)
3184 syms[j++] = syms[i];
3189 if (strcmp (syms[i]->section->name, ".opd") == 0)
3193 for (; i < symcount; ++i)
3194 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3195 != (SEC_CODE | SEC_ALLOC))
3196 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3200 for (; i < symcount; ++i)
3201 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3205 for (; i < symcount; ++i)
3206 if (strcmp (syms[i]->section->name, ".opd") != 0)
3210 for (; i < symcount; ++i)
3211 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3212 != (SEC_CODE | SEC_ALLOC))
3220 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3225 if (opdsymend == secsymend)
3228 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3229 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3233 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3240 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3244 while (r < opd->relocation + relcount
3245 && r->address < syms[i]->value + opd->vma)
3248 if (r == opd->relocation + relcount)
3251 if (r->address != syms[i]->value + opd->vma)
3254 if (r->howto->type != R_PPC64_ADDR64)
3257 sym = *r->sym_ptr_ptr;
3258 if (!sym_exists_at (syms, opdsymend, symcount,
3259 sym->section->id, sym->value + r->addend))
3262 size += sizeof (asymbol);
3263 size += strlen (syms[i]->name) + 2;
3267 s = *ret = bfd_malloc (size);
3274 names = (char *) (s + count);
3276 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3280 while (r < opd->relocation + relcount
3281 && r->address < syms[i]->value + opd->vma)
3284 if (r == opd->relocation + relcount)
3287 if (r->address != syms[i]->value + opd->vma)
3290 if (r->howto->type != R_PPC64_ADDR64)
3293 sym = *r->sym_ptr_ptr;
3294 if (!sym_exists_at (syms, opdsymend, symcount,
3295 sym->section->id, sym->value + r->addend))
3300 s->flags |= BSF_SYNTHETIC;
3301 s->section = sym->section;
3302 s->value = sym->value + r->addend;
3305 len = strlen (syms[i]->name);
3306 memcpy (names, syms[i]->name, len + 1);
3308 /* Have udata.p point back to the original symbol this
3309 synthetic symbol was derived from. */
3310 s->udata.p = syms[i];
3317 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3318 bfd_byte *contents = NULL;
3321 bfd_vma glink_vma = 0, resolv_vma = 0;
3322 asection *dynamic, *glink = NULL, *relplt = NULL;
3325 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3327 free_contents_and_exit:
3335 for (i = secsymend; i < opdsymend; ++i)
3339 /* Ignore bogus symbols. */
3340 if (syms[i]->value > opd->size - 8)
3343 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3344 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3347 size += sizeof (asymbol);
3348 size += strlen (syms[i]->name) + 2;
3352 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3354 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3356 bfd_byte *dynbuf, *extdyn, *extdynend;
3358 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3360 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3361 goto free_contents_and_exit;
3363 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3364 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3367 extdynend = extdyn + dynamic->size;
3368 for (; extdyn < extdynend; extdyn += extdynsize)
3370 Elf_Internal_Dyn dyn;
3371 (*swap_dyn_in) (abfd, extdyn, &dyn);
3373 if (dyn.d_tag == DT_NULL)
3376 if (dyn.d_tag == DT_PPC64_GLINK)
3378 /* The first glink stub starts at offset 32; see
3379 comment in ppc64_elf_finish_dynamic_sections. */
3380 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3381 /* The .glink section usually does not survive the final
3382 link; search for the section (usually .text) where the
3383 glink stubs now reside. */
3384 glink = bfd_sections_find_if (abfd, section_covers_vma,
3395 /* Determine __glink trampoline by reading the relative branch
3396 from the first glink stub. */
3398 unsigned int off = 0;
3400 while (bfd_get_section_contents (abfd, glink, buf,
3401 glink_vma + off - glink->vma, 4))
3403 unsigned int insn = bfd_get_32 (abfd, buf);
3405 if ((insn & ~0x3fffffc) == 0)
3407 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3416 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3418 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3421 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3422 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3423 goto free_contents_and_exit;
3425 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3426 size += plt_count * sizeof (asymbol);
3428 p = relplt->relocation;
3429 for (i = 0; i < plt_count; i++, p++)
3431 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3433 size += sizeof ("+0x") - 1 + 16;
3438 s = *ret = bfd_malloc (size);
3440 goto free_contents_and_exit;
3442 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3444 for (i = secsymend; i < opdsymend; ++i)
3448 if (syms[i]->value > opd->size - 8)
3451 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3452 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3456 asection *sec = abfd->sections;
3463 long mid = (lo + hi) >> 1;
3464 if (syms[mid]->section->vma < ent)
3466 else if (syms[mid]->section->vma > ent)
3470 sec = syms[mid]->section;
3475 if (lo >= hi && lo > codesecsym)
3476 sec = syms[lo - 1]->section;
3478 for (; sec != NULL; sec = sec->next)
3482 /* SEC_LOAD may not be set if SEC is from a separate debug
3484 if ((sec->flags & SEC_ALLOC) == 0)
3486 if ((sec->flags & SEC_CODE) != 0)
3489 s->flags |= BSF_SYNTHETIC;
3490 s->value = ent - s->section->vma;
3493 len = strlen (syms[i]->name);
3494 memcpy (names, syms[i]->name, len + 1);
3496 /* Have udata.p point back to the original symbol this
3497 synthetic symbol was derived from. */
3498 s->udata.p = syms[i];
3504 if (glink != NULL && relplt != NULL)
3508 /* Add a symbol for the main glink trampoline. */
3509 memset (s, 0, sizeof *s);
3511 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3513 s->value = resolv_vma - glink->vma;
3515 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3516 names += sizeof ("__glink_PLTresolve");
3521 /* FIXME: It would be very much nicer to put sym@plt on the
3522 stub rather than on the glink branch table entry. The
3523 objdump disassembler would then use a sensible symbol
3524 name on plt calls. The difficulty in doing so is
3525 a) finding the stubs, and,
3526 b) matching stubs against plt entries, and,
3527 c) there can be multiple stubs for a given plt entry.
3529 Solving (a) could be done by code scanning, but older
3530 ppc64 binaries used different stubs to current code.
3531 (b) is the tricky one since you need to known the toc
3532 pointer for at least one function that uses a pic stub to
3533 be able to calculate the plt address referenced.
3534 (c) means gdb would need to set multiple breakpoints (or
3535 find the glink branch itself) when setting breakpoints
3536 for pending shared library loads. */
3537 p = relplt->relocation;
3538 for (i = 0; i < plt_count; i++, p++)
3542 *s = **p->sym_ptr_ptr;
3543 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3544 we are defining a symbol, ensure one of them is set. */
3545 if ((s->flags & BSF_LOCAL) == 0)
3546 s->flags |= BSF_GLOBAL;
3547 s->flags |= BSF_SYNTHETIC;
3549 s->value = glink_vma - glink->vma;
3552 len = strlen ((*p->sym_ptr_ptr)->name);
3553 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3557 memcpy (names, "+0x", sizeof ("+0x") - 1);
3558 names += sizeof ("+0x") - 1;
3559 bfd_sprintf_vma (abfd, names, p->addend);
3560 names += strlen (names);
3562 memcpy (names, "@plt", sizeof ("@plt"));
3563 names += sizeof ("@plt");
3583 /* The following functions are specific to the ELF linker, while
3584 functions above are used generally. Those named ppc64_elf_* are
3585 called by the main ELF linker code. They appear in this file more
3586 or less in the order in which they are called. eg.
3587 ppc64_elf_check_relocs is called early in the link process,
3588 ppc64_elf_finish_dynamic_sections is one of the last functions
3591 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3592 functions have both a function code symbol and a function descriptor
3593 symbol. A call to foo in a relocatable object file looks like:
3600 The function definition in another object file might be:
3604 . .quad .TOC.@tocbase
3610 When the linker resolves the call during a static link, the branch
3611 unsurprisingly just goes to .foo and the .opd information is unused.
3612 If the function definition is in a shared library, things are a little
3613 different: The call goes via a plt call stub, the opd information gets
3614 copied to the plt, and the linker patches the nop.
3622 . std 2,40(1) # in practice, the call stub
3623 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3624 . addi 11,11,Lfoo@toc@l # this is the general idea
3632 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3634 The "reloc ()" notation is supposed to indicate that the linker emits
3635 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3638 What are the difficulties here? Well, firstly, the relocations
3639 examined by the linker in check_relocs are against the function code
3640 sym .foo, while the dynamic relocation in the plt is emitted against
3641 the function descriptor symbol, foo. Somewhere along the line, we need
3642 to carefully copy dynamic link information from one symbol to the other.
3643 Secondly, the generic part of the elf linker will make .foo a dynamic
3644 symbol as is normal for most other backends. We need foo dynamic
3645 instead, at least for an application final link. However, when
3646 creating a shared library containing foo, we need to have both symbols
3647 dynamic so that references to .foo are satisfied during the early
3648 stages of linking. Otherwise the linker might decide to pull in a
3649 definition from some other object, eg. a static library.
3651 Update: As of August 2004, we support a new convention. Function
3652 calls may use the function descriptor symbol, ie. "bl foo". This
3653 behaves exactly as "bl .foo". */
3655 /* Of those relocs that might be copied as dynamic relocs, this function
3656 selects those that must be copied when linking a shared library,
3657 even when the symbol is local. */
3660 must_be_dyn_reloc (struct bfd_link_info *info,
3661 enum elf_ppc64_reloc_type r_type)
3673 case R_PPC64_TPREL16:
3674 case R_PPC64_TPREL16_LO:
3675 case R_PPC64_TPREL16_HI:
3676 case R_PPC64_TPREL16_HA:
3677 case R_PPC64_TPREL16_DS:
3678 case R_PPC64_TPREL16_LO_DS:
3679 case R_PPC64_TPREL16_HIGH:
3680 case R_PPC64_TPREL16_HIGHA:
3681 case R_PPC64_TPREL16_HIGHER:
3682 case R_PPC64_TPREL16_HIGHERA:
3683 case R_PPC64_TPREL16_HIGHEST:
3684 case R_PPC64_TPREL16_HIGHESTA:
3685 case R_PPC64_TPREL64:
3686 return !info->executable;
3690 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3691 copying dynamic variables from a shared lib into an app's dynbss
3692 section, and instead use a dynamic relocation to point into the
3693 shared lib. With code that gcc generates, it's vital that this be
3694 enabled; In the PowerPC64 ABI, the address of a function is actually
3695 the address of a function descriptor, which resides in the .opd
3696 section. gcc uses the descriptor directly rather than going via the
3697 GOT as some other ABI's do, which means that initialized function
3698 pointers must reference the descriptor. Thus, a function pointer
3699 initialized to the address of a function in a shared library will
3700 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3701 redefines the function descriptor symbol to point to the copy. This
3702 presents a problem as a plt entry for that function is also
3703 initialized from the function descriptor symbol and the copy reloc
3704 may not be initialized first. */
3705 #define ELIMINATE_COPY_RELOCS 1
3707 /* Section name for stubs is the associated section name plus this
3709 #define STUB_SUFFIX ".stub"
3712 ppc_stub_long_branch:
3713 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3714 destination, but a 24 bit branch in a stub section will reach.
3717 ppc_stub_plt_branch:
3718 Similar to the above, but a 24 bit branch in the stub section won't
3719 reach its destination.
3720 . addis %r11,%r2,xxx@toc@ha
3721 . ld %r12,xxx@toc@l(%r11)
3726 Used to call a function in a shared library. If it so happens that
3727 the plt entry referenced crosses a 64k boundary, then an extra
3728 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3730 . addis %r11,%r2,xxx@toc@ha
3731 . ld %r12,xxx+0@toc@l(%r11)
3733 . ld %r2,xxx+8@toc@l(%r11)
3734 . ld %r11,xxx+16@toc@l(%r11)
3737 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3738 code to adjust the value and save r2 to support multiple toc sections.
3739 A ppc_stub_long_branch with an r2 offset looks like:
3741 . addis %r2,%r2,off@ha
3742 . addi %r2,%r2,off@l
3745 A ppc_stub_plt_branch with an r2 offset looks like:
3747 . addis %r11,%r2,xxx@toc@ha
3748 . ld %r12,xxx@toc@l(%r11)
3749 . addis %r2,%r2,off@ha
3750 . addi %r2,%r2,off@l
3754 In cases where the "addis" instruction would add zero, the "addis" is
3755 omitted and following instructions modified slightly in some cases.
3758 enum ppc_stub_type {
3760 ppc_stub_long_branch,
3761 ppc_stub_long_branch_r2off,
3762 ppc_stub_plt_branch,
3763 ppc_stub_plt_branch_r2off,
3765 ppc_stub_plt_call_r2save
3768 struct ppc_stub_hash_entry {
3770 /* Base hash table entry structure. */
3771 struct bfd_hash_entry root;
3773 enum ppc_stub_type stub_type;
3775 /* The stub section. */
3778 /* Offset within stub_sec of the beginning of this stub. */
3779 bfd_vma stub_offset;
3781 /* Given the symbol's value and its section we can determine its final
3782 value when building the stubs (so the stub knows where to jump. */
3783 bfd_vma target_value;
3784 asection *target_section;
3786 /* The symbol table entry, if any, that this was derived from. */
3787 struct ppc_link_hash_entry *h;
3788 struct plt_entry *plt_ent;
3790 /* Where this stub is being called from, or, in the case of combined
3791 stub sections, the first input section in the group. */
3794 /* Symbol st_other. */
3795 unsigned char other;
3798 struct ppc_branch_hash_entry {
3800 /* Base hash table entry structure. */
3801 struct bfd_hash_entry root;
3803 /* Offset within branch lookup table. */
3804 unsigned int offset;
3806 /* Generation marker. */
3810 /* Used to track dynamic relocations for local symbols. */
3811 struct ppc_dyn_relocs
3813 struct ppc_dyn_relocs *next;
3815 /* The input section of the reloc. */
3818 /* Total number of relocs copied for the input section. */
3819 unsigned int count : 31;
3821 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3822 unsigned int ifunc : 1;
3825 struct ppc_link_hash_entry
3827 struct elf_link_hash_entry elf;
3830 /* A pointer to the most recently used stub hash entry against this
3832 struct ppc_stub_hash_entry *stub_cache;
3834 /* A pointer to the next symbol starting with a '.' */
3835 struct ppc_link_hash_entry *next_dot_sym;
3838 /* Track dynamic relocs copied for this symbol. */
3839 struct elf_dyn_relocs *dyn_relocs;
3841 /* Link between function code and descriptor symbols. */
3842 struct ppc_link_hash_entry *oh;
3844 /* Flag function code and descriptor symbols. */
3845 unsigned int is_func:1;
3846 unsigned int is_func_descriptor:1;
3847 unsigned int fake:1;
3849 /* Whether global opd/toc sym has been adjusted or not.
3850 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3851 should be set for all globals defined in any opd/toc section. */
3852 unsigned int adjust_done:1;
3854 /* Set if we twiddled this symbol to weak at some stage. */
3855 unsigned int was_undefined:1;
3857 /* Contexts in which symbol is used in the GOT (or TOC).
3858 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3859 corresponding relocs are encountered during check_relocs.
3860 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3861 indicate the corresponding GOT entry type is not needed.
3862 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3863 a TPREL one. We use a separate flag rather than setting TPREL
3864 just for convenience in distinguishing the two cases. */
3865 #define TLS_GD 1 /* GD reloc. */
3866 #define TLS_LD 2 /* LD reloc. */
3867 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3868 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3869 #define TLS_TLS 16 /* Any TLS reloc. */
3870 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3871 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3872 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3873 unsigned char tls_mask;
3876 /* ppc64 ELF linker hash table. */
3878 struct ppc_link_hash_table
3880 struct elf_link_hash_table elf;
3882 /* The stub hash table. */
3883 struct bfd_hash_table stub_hash_table;
3885 /* Another hash table for plt_branch stubs. */
3886 struct bfd_hash_table branch_hash_table;
3888 /* Hash table for function prologue tocsave. */
3889 htab_t tocsave_htab;
3891 /* Various options and other info passed from the linker. */
3892 struct ppc64_elf_params *params;
3894 /* Array to keep track of which stub sections have been created, and
3895 information on stub grouping. */
3897 /* This is the section to which stubs in the group will be attached. */
3899 /* The stub section. */
3901 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3905 /* Temp used when calculating TOC pointers. */
3908 asection *toc_first_sec;
3910 /* Highest input section id. */
3913 /* Highest output section index. */
3916 /* Used when adding symbols. */
3917 struct ppc_link_hash_entry *dot_syms;
3919 /* List of input sections for each output section. */
3920 asection **input_list;
3922 /* Shortcuts to get to dynamic linker sections. */
3929 asection *glink_eh_frame;
3931 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3932 struct ppc_link_hash_entry *tls_get_addr;
3933 struct ppc_link_hash_entry *tls_get_addr_fd;
3935 /* The size of reliplt used by got entry relocs. */
3936 bfd_size_type got_reli_size;
3939 unsigned long stub_count[ppc_stub_plt_call_r2save];
3941 /* Number of stubs against global syms. */
3942 unsigned long stub_globals;
3944 /* Set if we're linking code with function descriptors. */
3945 unsigned int opd_abi:1;
3947 /* Support for multiple toc sections. */
3948 unsigned int do_multi_toc:1;
3949 unsigned int multi_toc_needed:1;
3950 unsigned int second_toc_pass:1;
3951 unsigned int do_toc_opt:1;
3954 unsigned int stub_error:1;
3956 /* Temp used by ppc64_elf_before_check_relocs. */
3957 unsigned int twiddled_syms:1;
3959 /* Incremented every time we size stubs. */
3960 unsigned int stub_iteration;
3962 /* Small local sym cache. */
3963 struct sym_cache sym_cache;
3966 /* Rename some of the generic section flags to better document how they
3969 /* Nonzero if this section has TLS related relocations. */
3970 #define has_tls_reloc sec_flg0
3972 /* Nonzero if this section has a call to __tls_get_addr. */
3973 #define has_tls_get_addr_call sec_flg1
3975 /* Nonzero if this section has any toc or got relocs. */
3976 #define has_toc_reloc sec_flg2
3978 /* Nonzero if this section has a call to another section that uses
3980 #define makes_toc_func_call sec_flg3
3982 /* Recursion protection when determining above flag. */
3983 #define call_check_in_progress sec_flg4
3984 #define call_check_done sec_flg5
3986 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3988 #define ppc_hash_table(p) \
3989 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3990 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3992 #define ppc_stub_hash_lookup(table, string, create, copy) \
3993 ((struct ppc_stub_hash_entry *) \
3994 bfd_hash_lookup ((table), (string), (create), (copy)))
3996 #define ppc_branch_hash_lookup(table, string, create, copy) \
3997 ((struct ppc_branch_hash_entry *) \
3998 bfd_hash_lookup ((table), (string), (create), (copy)))
4000 /* Create an entry in the stub hash table. */
4002 static struct bfd_hash_entry *
4003 stub_hash_newfunc (struct bfd_hash_entry *entry,
4004 struct bfd_hash_table *table,
4007 /* Allocate the structure if it has not already been allocated by a
4011 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4016 /* Call the allocation method of the superclass. */
4017 entry = bfd_hash_newfunc (entry, table, string);
4020 struct ppc_stub_hash_entry *eh;
4022 /* Initialize the local fields. */
4023 eh = (struct ppc_stub_hash_entry *) entry;
4024 eh->stub_type = ppc_stub_none;
4025 eh->stub_sec = NULL;
4026 eh->stub_offset = 0;
4027 eh->target_value = 0;
4028 eh->target_section = NULL;
4038 /* Create an entry in the branch hash table. */
4040 static struct bfd_hash_entry *
4041 branch_hash_newfunc (struct bfd_hash_entry *entry,
4042 struct bfd_hash_table *table,
4045 /* Allocate the structure if it has not already been allocated by a
4049 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4054 /* Call the allocation method of the superclass. */
4055 entry = bfd_hash_newfunc (entry, table, string);
4058 struct ppc_branch_hash_entry *eh;
4060 /* Initialize the local fields. */
4061 eh = (struct ppc_branch_hash_entry *) entry;
4069 /* Create an entry in a ppc64 ELF linker hash table. */
4071 static struct bfd_hash_entry *
4072 link_hash_newfunc (struct bfd_hash_entry *entry,
4073 struct bfd_hash_table *table,
4076 /* Allocate the structure if it has not already been allocated by a
4080 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4085 /* Call the allocation method of the superclass. */
4086 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4089 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4091 memset (&eh->u.stub_cache, 0,
4092 (sizeof (struct ppc_link_hash_entry)
4093 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4095 /* When making function calls, old ABI code references function entry
4096 points (dot symbols), while new ABI code references the function
4097 descriptor symbol. We need to make any combination of reference and
4098 definition work together, without breaking archive linking.
4100 For a defined function "foo" and an undefined call to "bar":
4101 An old object defines "foo" and ".foo", references ".bar" (possibly
4103 A new object defines "foo" and references "bar".
4105 A new object thus has no problem with its undefined symbols being
4106 satisfied by definitions in an old object. On the other hand, the
4107 old object won't have ".bar" satisfied by a new object.
4109 Keep a list of newly added dot-symbols. */
4111 if (string[0] == '.')
4113 struct ppc_link_hash_table *htab;
4115 htab = (struct ppc_link_hash_table *) table;
4116 eh->u.next_dot_sym = htab->dot_syms;
4117 htab->dot_syms = eh;
4124 struct tocsave_entry {
4130 tocsave_htab_hash (const void *p)
4132 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4133 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4137 tocsave_htab_eq (const void *p1, const void *p2)
4139 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4140 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4141 return e1->sec == e2->sec && e1->offset == e2->offset;
4144 /* Create a ppc64 ELF linker hash table. */
4146 static struct bfd_link_hash_table *
4147 ppc64_elf_link_hash_table_create (bfd *abfd)
4149 struct ppc_link_hash_table *htab;
4150 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4152 htab = bfd_zmalloc (amt);
4156 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4157 sizeof (struct ppc_link_hash_entry),
4164 /* Init the stub hash table too. */
4165 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4166 sizeof (struct ppc_stub_hash_entry)))
4168 _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table *) htab);
4172 /* And the branch hash table. */
4173 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4174 sizeof (struct ppc_branch_hash_entry)))
4176 bfd_hash_table_free (&htab->stub_hash_table);
4177 _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table *) htab);
4181 htab->tocsave_htab = htab_try_create (1024,
4185 if (htab->tocsave_htab == NULL)
4187 bfd_hash_table_free (&htab->branch_hash_table);
4188 bfd_hash_table_free (&htab->stub_hash_table);
4189 _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table *) htab);
4193 /* Initializing two fields of the union is just cosmetic. We really
4194 only care about glist, but when compiled on a 32-bit host the
4195 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4196 debugger inspection of these fields look nicer. */
4197 htab->elf.init_got_refcount.refcount = 0;
4198 htab->elf.init_got_refcount.glist = NULL;
4199 htab->elf.init_plt_refcount.refcount = 0;
4200 htab->elf.init_plt_refcount.glist = NULL;
4201 htab->elf.init_got_offset.offset = 0;
4202 htab->elf.init_got_offset.glist = NULL;
4203 htab->elf.init_plt_offset.offset = 0;
4204 htab->elf.init_plt_offset.glist = NULL;
4206 return &htab->elf.root;
4209 /* Free the derived linker hash table. */
4212 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4214 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4216 bfd_hash_table_free (&htab->stub_hash_table);
4217 bfd_hash_table_free (&htab->branch_hash_table);
4218 if (htab->tocsave_htab)
4219 htab_delete (htab->tocsave_htab);
4220 _bfd_elf_link_hash_table_free (hash);
4223 /* Create sections for linker generated code. */
4226 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4228 struct ppc_link_hash_table *htab;
4231 htab = ppc_hash_table (info);
4233 /* Create .sfpr for code to save and restore fp regs. */
4234 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4235 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4236 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4238 if (htab->sfpr == NULL
4239 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4242 /* Create .glink for lazy dynamic linking support. */
4243 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4245 if (htab->glink == NULL
4246 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4249 if (!info->no_ld_generated_unwind_info)
4251 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4252 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4253 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4256 if (htab->glink_eh_frame == NULL
4257 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4261 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4262 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4263 if (htab->elf.iplt == NULL
4264 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4267 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4268 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4270 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4271 if (htab->elf.irelplt == NULL
4272 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4275 /* Create branch lookup table for plt_branch stubs. */
4276 flags = (SEC_ALLOC | SEC_LOAD
4277 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4278 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4280 if (htab->brlt == NULL
4281 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4287 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4288 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4289 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4292 if (htab->relbrlt == NULL
4293 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4299 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4302 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4303 struct ppc64_elf_params *params)
4305 struct ppc_link_hash_table *htab;
4307 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4309 /* Always hook our dynamic sections into the first bfd, which is the
4310 linker created stub bfd. This ensures that the GOT header is at
4311 the start of the output TOC section. */
4312 htab = ppc_hash_table (info);
4315 htab->elf.dynobj = params->stub_bfd;
4316 htab->params = params;
4318 if (info->relocatable)
4321 return create_linkage_sections (htab->elf.dynobj, info);
4324 /* Build a name for an entry in the stub hash table. */
4327 ppc_stub_name (const asection *input_section,
4328 const asection *sym_sec,
4329 const struct ppc_link_hash_entry *h,
4330 const Elf_Internal_Rela *rel)
4335 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4336 offsets from a sym as a branch target? In fact, we could
4337 probably assume the addend is always zero. */
4338 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4342 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4343 stub_name = bfd_malloc (len);
4344 if (stub_name == NULL)
4347 len = sprintf (stub_name, "%08x.%s+%x",
4348 input_section->id & 0xffffffff,
4349 h->elf.root.root.string,
4350 (int) rel->r_addend & 0xffffffff);
4354 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4355 stub_name = bfd_malloc (len);
4356 if (stub_name == NULL)
4359 len = sprintf (stub_name, "%08x.%x:%x+%x",
4360 input_section->id & 0xffffffff,
4361 sym_sec->id & 0xffffffff,
4362 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4363 (int) rel->r_addend & 0xffffffff);
4365 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4366 stub_name[len - 2] = 0;
4370 /* Look up an entry in the stub hash. Stub entries are cached because
4371 creating the stub name takes a bit of time. */
4373 static struct ppc_stub_hash_entry *
4374 ppc_get_stub_entry (const asection *input_section,
4375 const asection *sym_sec,
4376 struct ppc_link_hash_entry *h,
4377 const Elf_Internal_Rela *rel,
4378 struct ppc_link_hash_table *htab)
4380 struct ppc_stub_hash_entry *stub_entry;
4381 const asection *id_sec;
4383 /* If this input section is part of a group of sections sharing one
4384 stub section, then use the id of the first section in the group.
4385 Stub names need to include a section id, as there may well be
4386 more than one stub used to reach say, printf, and we need to
4387 distinguish between them. */
4388 id_sec = htab->stub_group[input_section->id].link_sec;
4390 if (h != NULL && h->u.stub_cache != NULL
4391 && h->u.stub_cache->h == h
4392 && h->u.stub_cache->id_sec == id_sec)
4394 stub_entry = h->u.stub_cache;
4400 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4401 if (stub_name == NULL)
4404 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4405 stub_name, FALSE, FALSE);
4407 h->u.stub_cache = stub_entry;
4415 /* Add a new stub entry to the stub hash. Not all fields of the new
4416 stub entry are initialised. */
4418 static struct ppc_stub_hash_entry *
4419 ppc_add_stub (const char *stub_name,
4421 struct bfd_link_info *info)
4423 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4426 struct ppc_stub_hash_entry *stub_entry;
4428 link_sec = htab->stub_group[section->id].link_sec;
4429 stub_sec = htab->stub_group[section->id].stub_sec;
4430 if (stub_sec == NULL)
4432 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4433 if (stub_sec == NULL)
4439 namelen = strlen (link_sec->name);
4440 len = namelen + sizeof (STUB_SUFFIX);
4441 s_name = bfd_alloc (htab->params->stub_bfd, len);
4445 memcpy (s_name, link_sec->name, namelen);
4446 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4447 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4448 if (stub_sec == NULL)
4450 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4452 htab->stub_group[section->id].stub_sec = stub_sec;
4455 /* Enter this entry into the linker stub hash table. */
4456 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4458 if (stub_entry == NULL)
4460 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4461 section->owner, stub_name);
4465 stub_entry->stub_sec = stub_sec;
4466 stub_entry->stub_offset = 0;
4467 stub_entry->id_sec = link_sec;
4471 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4472 not already done. */
4475 create_got_section (bfd *abfd, struct bfd_link_info *info)
4477 asection *got, *relgot;
4479 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4481 if (!is_ppc64_elf (abfd))
4487 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4490 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4491 | SEC_LINKER_CREATED);
4493 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4495 || !bfd_set_section_alignment (abfd, got, 3))
4498 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4499 flags | SEC_READONLY);
4501 || ! bfd_set_section_alignment (abfd, relgot, 3))
4504 ppc64_elf_tdata (abfd)->got = got;
4505 ppc64_elf_tdata (abfd)->relgot = relgot;
4509 /* Create the dynamic sections, and set up shortcuts. */
4512 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4514 struct ppc_link_hash_table *htab;
4516 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4519 htab = ppc_hash_table (info);
4523 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4525 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4527 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4528 || (!info->shared && !htab->relbss))
4534 /* Follow indirect and warning symbol links. */
4536 static inline struct bfd_link_hash_entry *
4537 follow_link (struct bfd_link_hash_entry *h)
4539 while (h->type == bfd_link_hash_indirect
4540 || h->type == bfd_link_hash_warning)
4545 static inline struct elf_link_hash_entry *
4546 elf_follow_link (struct elf_link_hash_entry *h)
4548 return (struct elf_link_hash_entry *) follow_link (&h->root);
4551 static inline struct ppc_link_hash_entry *
4552 ppc_follow_link (struct ppc_link_hash_entry *h)
4554 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4557 /* Merge PLT info on FROM with that on TO. */
4560 move_plt_plist (struct ppc_link_hash_entry *from,
4561 struct ppc_link_hash_entry *to)
4563 if (from->elf.plt.plist != NULL)
4565 if (to->elf.plt.plist != NULL)
4567 struct plt_entry **entp;
4568 struct plt_entry *ent;
4570 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4572 struct plt_entry *dent;
4574 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4575 if (dent->addend == ent->addend)
4577 dent->plt.refcount += ent->plt.refcount;
4584 *entp = to->elf.plt.plist;
4587 to->elf.plt.plist = from->elf.plt.plist;
4588 from->elf.plt.plist = NULL;
4592 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4595 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4596 struct elf_link_hash_entry *dir,
4597 struct elf_link_hash_entry *ind)
4599 struct ppc_link_hash_entry *edir, *eind;
4601 edir = (struct ppc_link_hash_entry *) dir;
4602 eind = (struct ppc_link_hash_entry *) ind;
4604 edir->is_func |= eind->is_func;
4605 edir->is_func_descriptor |= eind->is_func_descriptor;
4606 edir->tls_mask |= eind->tls_mask;
4607 if (eind->oh != NULL)
4608 edir->oh = ppc_follow_link (eind->oh);
4610 /* If called to transfer flags for a weakdef during processing
4611 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4612 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4613 if (!(ELIMINATE_COPY_RELOCS
4614 && eind->elf.root.type != bfd_link_hash_indirect
4615 && edir->elf.dynamic_adjusted))
4616 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4618 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4619 edir->elf.ref_regular |= eind->elf.ref_regular;
4620 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4621 edir->elf.needs_plt |= eind->elf.needs_plt;
4622 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4624 /* Copy over any dynamic relocs we may have on the indirect sym. */
4625 if (eind->dyn_relocs != NULL)
4627 if (edir->dyn_relocs != NULL)
4629 struct elf_dyn_relocs **pp;
4630 struct elf_dyn_relocs *p;
4632 /* Add reloc counts against the indirect sym to the direct sym
4633 list. Merge any entries against the same section. */
4634 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4636 struct elf_dyn_relocs *q;
4638 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4639 if (q->sec == p->sec)
4641 q->pc_count += p->pc_count;
4642 q->count += p->count;
4649 *pp = edir->dyn_relocs;
4652 edir->dyn_relocs = eind->dyn_relocs;
4653 eind->dyn_relocs = NULL;
4656 /* If we were called to copy over info for a weak sym, that's all.
4657 You might think dyn_relocs need not be copied over; After all,
4658 both syms will be dynamic or both non-dynamic so we're just
4659 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4660 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4661 dyn_relocs in read-only sections, and it does so on what is the
4663 if (eind->elf.root.type != bfd_link_hash_indirect)
4666 /* Copy over got entries that we may have already seen to the
4667 symbol which just became indirect. */
4668 if (eind->elf.got.glist != NULL)
4670 if (edir->elf.got.glist != NULL)
4672 struct got_entry **entp;
4673 struct got_entry *ent;
4675 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4677 struct got_entry *dent;
4679 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4680 if (dent->addend == ent->addend
4681 && dent->owner == ent->owner
4682 && dent->tls_type == ent->tls_type)
4684 dent->got.refcount += ent->got.refcount;
4691 *entp = edir->elf.got.glist;
4694 edir->elf.got.glist = eind->elf.got.glist;
4695 eind->elf.got.glist = NULL;
4698 /* And plt entries. */
4699 move_plt_plist (eind, edir);
4701 if (eind->elf.dynindx != -1)
4703 if (edir->elf.dynindx != -1)
4704 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4705 edir->elf.dynstr_index);
4706 edir->elf.dynindx = eind->elf.dynindx;
4707 edir->elf.dynstr_index = eind->elf.dynstr_index;
4708 eind->elf.dynindx = -1;
4709 eind->elf.dynstr_index = 0;
4713 /* Find the function descriptor hash entry from the given function code
4714 hash entry FH. Link the entries via their OH fields. */
4716 static struct ppc_link_hash_entry *
4717 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4719 struct ppc_link_hash_entry *fdh = fh->oh;
4723 const char *fd_name = fh->elf.root.root.string + 1;
4725 fdh = (struct ppc_link_hash_entry *)
4726 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4730 fdh->is_func_descriptor = 1;
4736 return ppc_follow_link (fdh);
4739 /* Make a fake function descriptor sym for the code sym FH. */
4741 static struct ppc_link_hash_entry *
4742 make_fdh (struct bfd_link_info *info,
4743 struct ppc_link_hash_entry *fh)
4747 struct bfd_link_hash_entry *bh;
4748 struct ppc_link_hash_entry *fdh;
4750 abfd = fh->elf.root.u.undef.abfd;
4751 newsym = bfd_make_empty_symbol (abfd);
4752 newsym->name = fh->elf.root.root.string + 1;
4753 newsym->section = bfd_und_section_ptr;
4755 newsym->flags = BSF_WEAK;
4758 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4759 newsym->flags, newsym->section,
4760 newsym->value, NULL, FALSE, FALSE,
4764 fdh = (struct ppc_link_hash_entry *) bh;
4765 fdh->elf.non_elf = 0;
4767 fdh->is_func_descriptor = 1;
4774 /* Fix function descriptor symbols defined in .opd sections to be
4778 ppc64_elf_add_symbol_hook (bfd *ibfd,
4779 struct bfd_link_info *info,
4780 Elf_Internal_Sym *isym,
4782 flagword *flags ATTRIBUTE_UNUSED,
4784 bfd_vma *value ATTRIBUTE_UNUSED)
4786 if ((ibfd->flags & DYNAMIC) == 0
4787 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4788 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4790 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4792 if ((ibfd->flags & DYNAMIC) == 0)
4793 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4795 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4797 else if (*sec != NULL
4798 && strcmp ((*sec)->name, ".opd") == 0)
4799 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4801 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4803 if (abiversion (ibfd) == 0)
4804 set_abiversion (ibfd, 2);
4805 else if (abiversion (ibfd) == 1)
4807 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4808 " for ABI version 1\n"), name);
4809 bfd_set_error (bfd_error_bad_value);
4817 /* Merge non-visibility st_other attributes: local entry point. */
4820 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4821 const Elf_Internal_Sym *isym,
4822 bfd_boolean definition,
4823 bfd_boolean dynamic)
4825 if (definition && !dynamic)
4826 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4827 | ELF_ST_VISIBILITY (h->other));
4830 /* This function makes an old ABI object reference to ".bar" cause the
4831 inclusion of a new ABI object archive that defines "bar".
4832 NAME is a symbol defined in an archive. Return a symbol in the hash
4833 table that might be satisfied by the archive symbols. */
4835 static struct elf_link_hash_entry *
4836 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4837 struct bfd_link_info *info,
4840 struct elf_link_hash_entry *h;
4844 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4846 /* Don't return this sym if it is a fake function descriptor
4847 created by add_symbol_adjust. */
4848 && !(h->root.type == bfd_link_hash_undefweak
4849 && ((struct ppc_link_hash_entry *) h)->fake))
4855 len = strlen (name);
4856 dot_name = bfd_alloc (abfd, len + 2);
4857 if (dot_name == NULL)
4858 return (struct elf_link_hash_entry *) 0 - 1;
4860 memcpy (dot_name + 1, name, len + 1);
4861 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4862 bfd_release (abfd, dot_name);
4866 /* This function satisfies all old ABI object references to ".bar" if a
4867 new ABI object defines "bar". Well, at least, undefined dot symbols
4868 are made weak. This stops later archive searches from including an
4869 object if we already have a function descriptor definition. It also
4870 prevents the linker complaining about undefined symbols.
4871 We also check and correct mismatched symbol visibility here. The
4872 most restrictive visibility of the function descriptor and the
4873 function entry symbol is used. */
4876 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4878 struct ppc_link_hash_table *htab;
4879 struct ppc_link_hash_entry *fdh;
4881 if (eh->elf.root.type == bfd_link_hash_indirect)
4884 if (eh->elf.root.type == bfd_link_hash_warning)
4885 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4887 if (eh->elf.root.root.string[0] != '.')
4890 htab = ppc_hash_table (info);
4894 fdh = lookup_fdh (eh, htab);
4897 if (!info->relocatable
4898 && (eh->elf.root.type == bfd_link_hash_undefined
4899 || eh->elf.root.type == bfd_link_hash_undefweak)
4900 && eh->elf.ref_regular)
4902 /* Make an undefweak function descriptor sym, which is enough to
4903 pull in an --as-needed shared lib, but won't cause link
4904 errors. Archives are handled elsewhere. */
4905 fdh = make_fdh (info, eh);
4908 fdh->elf.ref_regular = 1;
4913 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4914 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4915 if (entry_vis < descr_vis)
4916 fdh->elf.other += entry_vis - descr_vis;
4917 else if (entry_vis > descr_vis)
4918 eh->elf.other += descr_vis - entry_vis;
4920 if ((fdh->elf.root.type == bfd_link_hash_defined
4921 || fdh->elf.root.type == bfd_link_hash_defweak)
4922 && eh->elf.root.type == bfd_link_hash_undefined)
4924 eh->elf.root.type = bfd_link_hash_undefweak;
4925 eh->was_undefined = 1;
4926 htab->twiddled_syms = 1;
4933 /* Set up opd section info and abiversion for IBFD, and process list
4934 of dot-symbols we made in link_hash_newfunc. */
4937 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
4939 struct ppc_link_hash_table *htab;
4940 struct ppc_link_hash_entry **p, *eh;
4942 if (!is_ppc64_elf (info->output_bfd))
4944 htab = ppc_hash_table (info);
4948 if (is_ppc64_elf (ibfd))
4950 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4952 if (opd != NULL && opd->size != 0)
4954 if (abiversion (ibfd) == 0)
4955 set_abiversion (ibfd, 1);
4956 else if (abiversion (ibfd) == 2)
4958 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4960 ibfd, abiversion (ibfd));
4961 bfd_set_error (bfd_error_bad_value);
4965 if ((ibfd->flags & DYNAMIC) == 0
4966 && (opd->flags & SEC_RELOC) != 0
4967 && opd->reloc_count != 0
4968 && !bfd_is_abs_section (opd->output_section))
4970 /* Garbage collection needs some extra help with .opd sections.
4971 We don't want to necessarily keep everything referenced by
4972 relocs in .opd, as that would keep all functions. Instead,
4973 if we reference an .opd symbol (a function descriptor), we
4974 want to keep the function code symbol's section. This is
4975 easy for global symbols, but for local syms we need to keep
4976 information about the associated function section. */
4978 asection **opd_sym_map;
4980 amt = opd->size * sizeof (*opd_sym_map) / 8;
4981 opd_sym_map = bfd_zalloc (ibfd, amt);
4982 if (opd_sym_map == NULL)
4984 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
4985 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
4986 ppc64_elf_section_data (opd)->sec_type = sec_opd;
4990 /* For input files without an explicit abiversion in e_flags
4991 we should have flagged any with symbol st_other bits set
4992 as ELFv1 and above flagged those with .opd as ELFv2.
4993 Set the output abiversion if not yet set, and for any input
4994 still ambiguous, take its abiversion from the output.
4995 Differences in ABI are reported later. */
4996 if (abiversion (info->output_bfd) == 0)
4997 set_abiversion (info->output_bfd, abiversion (ibfd));
4998 else if (abiversion (ibfd) == 0)
4999 set_abiversion (ibfd, abiversion (info->output_bfd));
5001 p = &htab->dot_syms;
5002 while ((eh = *p) != NULL)
5005 if (&eh->elf == htab->elf.hgot)
5007 else if (htab->elf.hgot == NULL
5008 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5009 htab->elf.hgot = &eh->elf;
5010 else if (!add_symbol_adjust (eh, info))
5012 p = &eh->u.next_dot_sym;
5016 /* Clear the list for non-ppc64 input files. */
5017 p = &htab->dot_syms;
5018 while ((eh = *p) != NULL)
5021 p = &eh->u.next_dot_sym;
5024 /* We need to fix the undefs list for any syms we have twiddled to
5026 if (htab->twiddled_syms)
5028 bfd_link_repair_undef_list (&htab->elf.root);
5029 htab->twiddled_syms = 0;
5034 /* Undo hash table changes when an --as-needed input file is determined
5035 not to be needed. */
5038 ppc64_elf_notice_as_needed (bfd *ibfd,
5039 struct bfd_link_info *info,
5040 enum notice_asneeded_action act)
5042 if (act == notice_not_needed)
5044 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5049 htab->dot_syms = NULL;
5051 return _bfd_elf_notice_as_needed (ibfd, info, act);
5054 /* If --just-symbols against a final linked binary, then assume we need
5055 toc adjusting stubs when calling functions defined there. */
5058 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5060 if ((sec->flags & SEC_CODE) != 0
5061 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5062 && is_ppc64_elf (sec->owner))
5064 if (abiversion (sec->owner) >= 2
5065 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5066 sec->has_toc_reloc = 1;
5068 _bfd_elf_link_just_syms (sec, info);
5071 static struct plt_entry **
5072 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5073 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5075 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5076 struct plt_entry **local_plt;
5077 unsigned char *local_got_tls_masks;
5079 if (local_got_ents == NULL)
5081 bfd_size_type size = symtab_hdr->sh_info;
5083 size *= (sizeof (*local_got_ents)
5084 + sizeof (*local_plt)
5085 + sizeof (*local_got_tls_masks));
5086 local_got_ents = bfd_zalloc (abfd, size);
5087 if (local_got_ents == NULL)
5089 elf_local_got_ents (abfd) = local_got_ents;
5092 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5094 struct got_entry *ent;
5096 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5097 if (ent->addend == r_addend
5098 && ent->owner == abfd
5099 && ent->tls_type == tls_type)
5103 bfd_size_type amt = sizeof (*ent);
5104 ent = bfd_alloc (abfd, amt);
5107 ent->next = local_got_ents[r_symndx];
5108 ent->addend = r_addend;
5110 ent->tls_type = tls_type;
5111 ent->is_indirect = FALSE;
5112 ent->got.refcount = 0;
5113 local_got_ents[r_symndx] = ent;
5115 ent->got.refcount += 1;
5118 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5119 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5120 local_got_tls_masks[r_symndx] |= tls_type;
5122 return local_plt + r_symndx;
5126 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5128 struct plt_entry *ent;
5130 for (ent = *plist; ent != NULL; ent = ent->next)
5131 if (ent->addend == addend)
5135 bfd_size_type amt = sizeof (*ent);
5136 ent = bfd_alloc (abfd, amt);
5140 ent->addend = addend;
5141 ent->plt.refcount = 0;
5144 ent->plt.refcount += 1;
5149 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5151 return (r_type == R_PPC64_REL24
5152 || r_type == R_PPC64_REL14
5153 || r_type == R_PPC64_REL14_BRTAKEN
5154 || r_type == R_PPC64_REL14_BRNTAKEN
5155 || r_type == R_PPC64_ADDR24
5156 || r_type == R_PPC64_ADDR14
5157 || r_type == R_PPC64_ADDR14_BRTAKEN
5158 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5161 /* Look through the relocs for a section during the first phase, and
5162 calculate needed space in the global offset table, procedure
5163 linkage table, and dynamic reloc sections. */
5166 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5167 asection *sec, const Elf_Internal_Rela *relocs)
5169 struct ppc_link_hash_table *htab;
5170 Elf_Internal_Shdr *symtab_hdr;
5171 struct elf_link_hash_entry **sym_hashes;
5172 const Elf_Internal_Rela *rel;
5173 const Elf_Internal_Rela *rel_end;
5175 asection **opd_sym_map;
5176 struct elf_link_hash_entry *tga, *dottga;
5178 if (info->relocatable)
5181 /* Don't do anything special with non-loaded, non-alloced sections.
5182 In particular, any relocs in such sections should not affect GOT
5183 and PLT reference counting (ie. we don't allow them to create GOT
5184 or PLT entries), there's no possibility or desire to optimize TLS
5185 relocs, and there's not much point in propagating relocs to shared
5186 libs that the dynamic linker won't relocate. */
5187 if ((sec->flags & SEC_ALLOC) == 0)
5190 BFD_ASSERT (is_ppc64_elf (abfd));
5192 htab = ppc_hash_table (info);
5196 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5197 FALSE, FALSE, TRUE);
5198 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5199 FALSE, FALSE, TRUE);
5200 symtab_hdr = &elf_symtab_hdr (abfd);
5201 sym_hashes = elf_sym_hashes (abfd);
5204 if (ppc64_elf_section_data (sec) != NULL
5205 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5206 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5208 rel_end = relocs + sec->reloc_count;
5209 for (rel = relocs; rel < rel_end; rel++)
5211 unsigned long r_symndx;
5212 struct elf_link_hash_entry *h;
5213 enum elf_ppc64_reloc_type r_type;
5215 struct _ppc64_elf_section_data *ppc64_sec;
5216 struct plt_entry **ifunc;
5218 r_symndx = ELF64_R_SYM (rel->r_info);
5219 if (r_symndx < symtab_hdr->sh_info)
5223 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5224 h = elf_follow_link (h);
5226 /* PR15323, ref flags aren't set for references in the same
5228 h->root.non_ir_ref = 1;
5230 if (h == htab->elf.hgot)
5231 sec->has_toc_reloc = 1;
5238 if (h->type == STT_GNU_IFUNC)
5241 ifunc = &h->plt.plist;
5246 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5251 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5253 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5254 rel->r_addend, PLT_IFUNC);
5259 r_type = ELF64_R_TYPE (rel->r_info);
5260 if (is_branch_reloc (r_type))
5262 if (h != NULL && (h == tga || h == dottga))
5265 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5266 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5267 /* We have a new-style __tls_get_addr call with a marker
5271 /* Mark this section as having an old-style call. */
5272 sec->has_tls_get_addr_call = 1;
5275 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5277 && !update_plt_info (abfd, ifunc, rel->r_addend))
5285 /* These special tls relocs tie a call to __tls_get_addr with
5286 its parameter symbol. */
5289 case R_PPC64_GOT_TLSLD16:
5290 case R_PPC64_GOT_TLSLD16_LO:
5291 case R_PPC64_GOT_TLSLD16_HI:
5292 case R_PPC64_GOT_TLSLD16_HA:
5293 tls_type = TLS_TLS | TLS_LD;
5296 case R_PPC64_GOT_TLSGD16:
5297 case R_PPC64_GOT_TLSGD16_LO:
5298 case R_PPC64_GOT_TLSGD16_HI:
5299 case R_PPC64_GOT_TLSGD16_HA:
5300 tls_type = TLS_TLS | TLS_GD;
5303 case R_PPC64_GOT_TPREL16_DS:
5304 case R_PPC64_GOT_TPREL16_LO_DS:
5305 case R_PPC64_GOT_TPREL16_HI:
5306 case R_PPC64_GOT_TPREL16_HA:
5307 if (!info->executable)
5308 info->flags |= DF_STATIC_TLS;
5309 tls_type = TLS_TLS | TLS_TPREL;
5312 case R_PPC64_GOT_DTPREL16_DS:
5313 case R_PPC64_GOT_DTPREL16_LO_DS:
5314 case R_PPC64_GOT_DTPREL16_HI:
5315 case R_PPC64_GOT_DTPREL16_HA:
5316 tls_type = TLS_TLS | TLS_DTPREL;
5318 sec->has_tls_reloc = 1;
5322 case R_PPC64_GOT16_DS:
5323 case R_PPC64_GOT16_HA:
5324 case R_PPC64_GOT16_HI:
5325 case R_PPC64_GOT16_LO:
5326 case R_PPC64_GOT16_LO_DS:
5327 /* This symbol requires a global offset table entry. */
5328 sec->has_toc_reloc = 1;
5329 if (r_type == R_PPC64_GOT_TLSLD16
5330 || r_type == R_PPC64_GOT_TLSGD16
5331 || r_type == R_PPC64_GOT_TPREL16_DS
5332 || r_type == R_PPC64_GOT_DTPREL16_DS
5333 || r_type == R_PPC64_GOT16
5334 || r_type == R_PPC64_GOT16_DS)
5336 htab->do_multi_toc = 1;
5337 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5340 if (ppc64_elf_tdata (abfd)->got == NULL
5341 && !create_got_section (abfd, info))
5346 struct ppc_link_hash_entry *eh;
5347 struct got_entry *ent;
5349 eh = (struct ppc_link_hash_entry *) h;
5350 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5351 if (ent->addend == rel->r_addend
5352 && ent->owner == abfd
5353 && ent->tls_type == tls_type)
5357 bfd_size_type amt = sizeof (*ent);
5358 ent = bfd_alloc (abfd, amt);
5361 ent->next = eh->elf.got.glist;
5362 ent->addend = rel->r_addend;
5364 ent->tls_type = tls_type;
5365 ent->is_indirect = FALSE;
5366 ent->got.refcount = 0;
5367 eh->elf.got.glist = ent;
5369 ent->got.refcount += 1;
5370 eh->tls_mask |= tls_type;
5373 /* This is a global offset table entry for a local symbol. */
5374 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5375 rel->r_addend, tls_type))
5378 /* We may also need a plt entry if the symbol turns out to be
5380 if (h != NULL && !info->shared && abiversion (abfd) != 1)
5382 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5387 case R_PPC64_PLT16_HA:
5388 case R_PPC64_PLT16_HI:
5389 case R_PPC64_PLT16_LO:
5392 /* This symbol requires a procedure linkage table entry. We
5393 actually build the entry in adjust_dynamic_symbol,
5394 because this might be a case of linking PIC code without
5395 linking in any dynamic objects, in which case we don't
5396 need to generate a procedure linkage table after all. */
5399 /* It does not make sense to have a procedure linkage
5400 table entry for a local symbol. */
5401 bfd_set_error (bfd_error_bad_value);
5406 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5409 if (h->root.root.string[0] == '.'
5410 && h->root.root.string[1] != '\0')
5411 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5415 /* The following relocations don't need to propagate the
5416 relocation if linking a shared object since they are
5417 section relative. */
5418 case R_PPC64_SECTOFF:
5419 case R_PPC64_SECTOFF_LO:
5420 case R_PPC64_SECTOFF_HI:
5421 case R_PPC64_SECTOFF_HA:
5422 case R_PPC64_SECTOFF_DS:
5423 case R_PPC64_SECTOFF_LO_DS:
5424 case R_PPC64_DTPREL16:
5425 case R_PPC64_DTPREL16_LO:
5426 case R_PPC64_DTPREL16_HI:
5427 case R_PPC64_DTPREL16_HA:
5428 case R_PPC64_DTPREL16_DS:
5429 case R_PPC64_DTPREL16_LO_DS:
5430 case R_PPC64_DTPREL16_HIGH:
5431 case R_PPC64_DTPREL16_HIGHA:
5432 case R_PPC64_DTPREL16_HIGHER:
5433 case R_PPC64_DTPREL16_HIGHERA:
5434 case R_PPC64_DTPREL16_HIGHEST:
5435 case R_PPC64_DTPREL16_HIGHESTA:
5440 case R_PPC64_REL16_LO:
5441 case R_PPC64_REL16_HI:
5442 case R_PPC64_REL16_HA:
5445 /* Not supported as a dynamic relocation. */
5446 case R_PPC64_ADDR64_LOCAL:
5449 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5451 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5452 "in shared libraries and PIEs.\n"),
5453 abfd, sec, rel->r_offset,
5454 ppc64_elf_howto_table[r_type]->name);
5455 bfd_set_error (bfd_error_bad_value);
5461 case R_PPC64_TOC16_DS:
5462 htab->do_multi_toc = 1;
5463 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5464 case R_PPC64_TOC16_LO:
5465 case R_PPC64_TOC16_HI:
5466 case R_PPC64_TOC16_HA:
5467 case R_PPC64_TOC16_LO_DS:
5468 sec->has_toc_reloc = 1;
5471 /* This relocation describes the C++ object vtable hierarchy.
5472 Reconstruct it for later use during GC. */
5473 case R_PPC64_GNU_VTINHERIT:
5474 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5478 /* This relocation describes which C++ vtable entries are actually
5479 used. Record for later use during GC. */
5480 case R_PPC64_GNU_VTENTRY:
5481 BFD_ASSERT (h != NULL);
5483 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5488 case R_PPC64_REL14_BRTAKEN:
5489 case R_PPC64_REL14_BRNTAKEN:
5491 asection *dest = NULL;
5493 /* Heuristic: If jumping outside our section, chances are
5494 we are going to need a stub. */
5497 /* If the sym is weak it may be overridden later, so
5498 don't assume we know where a weak sym lives. */
5499 if (h->root.type == bfd_link_hash_defined)
5500 dest = h->root.u.def.section;
5504 Elf_Internal_Sym *isym;
5506 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5511 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5515 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5520 if (h != NULL && ifunc == NULL)
5522 /* We may need a .plt entry if the function this reloc
5523 refers to is in a shared lib. */
5524 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5527 if (h->root.root.string[0] == '.'
5528 && h->root.root.string[1] != '\0')
5529 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5530 if (h == tga || h == dottga)
5531 sec->has_tls_reloc = 1;
5535 case R_PPC64_TPREL64:
5536 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5537 if (!info->executable)
5538 info->flags |= DF_STATIC_TLS;
5541 case R_PPC64_DTPMOD64:
5542 if (rel + 1 < rel_end
5543 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5544 && rel[1].r_offset == rel->r_offset + 8)
5545 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5547 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5550 case R_PPC64_DTPREL64:
5551 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5553 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5554 && rel[-1].r_offset == rel->r_offset - 8)
5555 /* This is the second reloc of a dtpmod, dtprel pair.
5556 Don't mark with TLS_DTPREL. */
5560 sec->has_tls_reloc = 1;
5563 struct ppc_link_hash_entry *eh;
5564 eh = (struct ppc_link_hash_entry *) h;
5565 eh->tls_mask |= tls_type;
5568 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5569 rel->r_addend, tls_type))
5572 ppc64_sec = ppc64_elf_section_data (sec);
5573 if (ppc64_sec->sec_type != sec_toc)
5577 /* One extra to simplify get_tls_mask. */
5578 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5579 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5580 if (ppc64_sec->u.toc.symndx == NULL)
5582 amt = sec->size * sizeof (bfd_vma) / 8;
5583 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5584 if (ppc64_sec->u.toc.add == NULL)
5586 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5587 ppc64_sec->sec_type = sec_toc;
5589 BFD_ASSERT (rel->r_offset % 8 == 0);
5590 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5591 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5593 /* Mark the second slot of a GD or LD entry.
5594 -1 to indicate GD and -2 to indicate LD. */
5595 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5596 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5597 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5598 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5601 case R_PPC64_TPREL16:
5602 case R_PPC64_TPREL16_LO:
5603 case R_PPC64_TPREL16_HI:
5604 case R_PPC64_TPREL16_HA:
5605 case R_PPC64_TPREL16_DS:
5606 case R_PPC64_TPREL16_LO_DS:
5607 case R_PPC64_TPREL16_HIGH:
5608 case R_PPC64_TPREL16_HIGHA:
5609 case R_PPC64_TPREL16_HIGHER:
5610 case R_PPC64_TPREL16_HIGHERA:
5611 case R_PPC64_TPREL16_HIGHEST:
5612 case R_PPC64_TPREL16_HIGHESTA:
5615 if (!info->executable)
5616 info->flags |= DF_STATIC_TLS;
5621 case R_PPC64_ADDR64:
5622 if (opd_sym_map != NULL
5623 && rel + 1 < rel_end
5624 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5628 if (h->root.root.string[0] == '.'
5629 && h->root.root.string[1] != 0
5630 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5633 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5638 Elf_Internal_Sym *isym;
5640 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5645 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5646 if (s != NULL && s != sec)
5647 opd_sym_map[rel->r_offset / 8] = s;
5652 case R_PPC64_ADDR16:
5653 case R_PPC64_ADDR16_DS:
5654 case R_PPC64_ADDR16_HA:
5655 case R_PPC64_ADDR16_HI:
5656 case R_PPC64_ADDR16_HIGH:
5657 case R_PPC64_ADDR16_HIGHA:
5658 case R_PPC64_ADDR16_HIGHER:
5659 case R_PPC64_ADDR16_HIGHERA:
5660 case R_PPC64_ADDR16_HIGHEST:
5661 case R_PPC64_ADDR16_HIGHESTA:
5662 case R_PPC64_ADDR16_LO:
5663 case R_PPC64_ADDR16_LO_DS:
5664 if (h != NULL && !info->shared && abiversion (abfd) != 1
5665 && rel->r_addend == 0)
5667 /* We may need a .plt entry if this reloc refers to a
5668 function in a shared lib. */
5669 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5671 h->pointer_equality_needed = 1;
5678 case R_PPC64_ADDR14:
5679 case R_PPC64_ADDR14_BRNTAKEN:
5680 case R_PPC64_ADDR14_BRTAKEN:
5681 case R_PPC64_ADDR24:
5682 case R_PPC64_ADDR32:
5683 case R_PPC64_UADDR16:
5684 case R_PPC64_UADDR32:
5685 case R_PPC64_UADDR64:
5687 if (h != NULL && !info->shared)
5688 /* We may need a copy reloc. */
5691 /* Don't propagate .opd relocs. */
5692 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5695 /* If we are creating a shared library, and this is a reloc
5696 against a global symbol, or a non PC relative reloc
5697 against a local symbol, then we need to copy the reloc
5698 into the shared library. However, if we are linking with
5699 -Bsymbolic, we do not need to copy a reloc against a
5700 global symbol which is defined in an object we are
5701 including in the link (i.e., DEF_REGULAR is set). At
5702 this point we have not seen all the input files, so it is
5703 possible that DEF_REGULAR is not set now but will be set
5704 later (it is never cleared). In case of a weak definition,
5705 DEF_REGULAR may be cleared later by a strong definition in
5706 a shared library. We account for that possibility below by
5707 storing information in the dyn_relocs field of the hash
5708 table entry. A similar situation occurs when creating
5709 shared libraries and symbol visibility changes render the
5712 If on the other hand, we are creating an executable, we
5713 may need to keep relocations for symbols satisfied by a
5714 dynamic library if we manage to avoid copy relocs for the
5718 && (must_be_dyn_reloc (info, r_type)
5720 && (!SYMBOLIC_BIND (info, h)
5721 || h->root.type == bfd_link_hash_defweak
5722 || !h->def_regular))))
5723 || (ELIMINATE_COPY_RELOCS
5726 && (h->root.type == bfd_link_hash_defweak
5727 || !h->def_regular))
5731 /* We must copy these reloc types into the output file.
5732 Create a reloc section in dynobj and make room for
5736 sreloc = _bfd_elf_make_dynamic_reloc_section
5737 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5743 /* If this is a global symbol, we count the number of
5744 relocations we need for this symbol. */
5747 struct elf_dyn_relocs *p;
5748 struct elf_dyn_relocs **head;
5750 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5752 if (p == NULL || p->sec != sec)
5754 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5764 if (!must_be_dyn_reloc (info, r_type))
5769 /* Track dynamic relocs needed for local syms too.
5770 We really need local syms available to do this
5772 struct ppc_dyn_relocs *p;
5773 struct ppc_dyn_relocs **head;
5774 bfd_boolean is_ifunc;
5777 Elf_Internal_Sym *isym;
5779 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5784 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5788 vpp = &elf_section_data (s)->local_dynrel;
5789 head = (struct ppc_dyn_relocs **) vpp;
5790 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5792 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5794 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5796 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5802 p->ifunc = is_ifunc;
5818 /* Merge backend specific data from an object file to the output
5819 object file when linking. */
5822 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5824 unsigned long iflags, oflags;
5826 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5829 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5832 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5835 iflags = elf_elfheader (ibfd)->e_flags;
5836 oflags = elf_elfheader (obfd)->e_flags;
5838 if (iflags & ~EF_PPC64_ABI)
5840 (*_bfd_error_handler)
5841 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5842 bfd_set_error (bfd_error_bad_value);
5845 else if (iflags != oflags && iflags != 0)
5847 (*_bfd_error_handler)
5848 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5849 ibfd, iflags, oflags);
5850 bfd_set_error (bfd_error_bad_value);
5854 /* Merge Tag_compatibility attributes and any common GNU ones. */
5855 _bfd_elf_merge_object_attributes (ibfd, obfd);
5861 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5863 /* Print normal ELF private data. */
5864 _bfd_elf_print_private_bfd_data (abfd, ptr);
5866 if (elf_elfheader (abfd)->e_flags != 0)
5870 /* xgettext:c-format */
5871 fprintf (file, _("private flags = 0x%lx:"),
5872 elf_elfheader (abfd)->e_flags);
5874 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5875 fprintf (file, _(" [abiv%ld]"),
5876 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5883 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5884 of the code entry point, and its section. */
5887 opd_entry_value (asection *opd_sec,
5889 asection **code_sec,
5891 bfd_boolean in_code_sec)
5893 bfd *opd_bfd = opd_sec->owner;
5894 Elf_Internal_Rela *relocs;
5895 Elf_Internal_Rela *lo, *hi, *look;
5898 /* No relocs implies we are linking a --just-symbols object, or looking
5899 at a final linked executable with addr2line or somesuch. */
5900 if (opd_sec->reloc_count == 0)
5902 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5904 if (contents == NULL)
5906 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5907 return (bfd_vma) -1;
5908 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5911 val = bfd_get_64 (opd_bfd, contents + offset);
5912 if (code_sec != NULL)
5914 asection *sec, *likely = NULL;
5920 && val < sec->vma + sec->size)
5926 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5928 && (sec->flags & SEC_LOAD) != 0
5929 && (sec->flags & SEC_ALLOC) != 0)
5934 if (code_off != NULL)
5935 *code_off = val - likely->vma;
5941 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5943 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5945 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5947 /* Go find the opd reloc at the sym address. */
5949 BFD_ASSERT (lo != NULL);
5950 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5954 look = lo + (hi - lo) / 2;
5955 if (look->r_offset < offset)
5957 else if (look->r_offset > offset)
5961 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5963 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5964 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5966 unsigned long symndx = ELF64_R_SYM (look->r_info);
5969 if (symndx < symtab_hdr->sh_info
5970 || elf_sym_hashes (opd_bfd) == NULL)
5972 Elf_Internal_Sym *sym;
5974 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5977 size_t symcnt = symtab_hdr->sh_info;
5978 if (elf_sym_hashes (opd_bfd) == NULL)
5979 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5980 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5981 0, NULL, NULL, NULL);
5984 symtab_hdr->contents = (bfd_byte *) sym;
5988 val = sym->st_value;
5989 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5990 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5994 struct elf_link_hash_entry **sym_hashes;
5995 struct elf_link_hash_entry *rh;
5997 sym_hashes = elf_sym_hashes (opd_bfd);
5998 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6001 rh = elf_follow_link (rh);
6002 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6003 || rh->root.type == bfd_link_hash_defweak);
6004 val = rh->root.u.def.value;
6005 sec = rh->root.u.def.section;
6009 /* Handle the odd case where we can be called
6010 during bfd_elf_link_add_symbols before the
6011 symbol hashes have been fully populated. */
6012 Elf_Internal_Sym *sym;
6014 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
6015 symndx, NULL, NULL, NULL);
6019 val = sym->st_value;
6020 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6024 val += look->r_addend;
6025 if (code_off != NULL)
6027 if (code_sec != NULL)
6029 if (in_code_sec && *code_sec != sec)
6034 if (sec != NULL && sec->output_section != NULL)
6035 val += sec->output_section->vma + sec->output_offset;
6044 /* If the ELF symbol SYM might be a function in SEC, return the
6045 function size and set *CODE_OFF to the function's entry point,
6046 otherwise return zero. */
6048 static bfd_size_type
6049 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6054 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6055 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6059 if (!(sym->flags & BSF_SYNTHETIC))
6060 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6062 if (strcmp (sym->section->name, ".opd") == 0)
6064 if (opd_entry_value (sym->section, sym->value,
6065 &sec, code_off, TRUE) == (bfd_vma) -1)
6067 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6068 symbol. This size has nothing to do with the code size of the
6069 function, which is what we're supposed to return, but the
6070 code size isn't available without looking up the dot-sym.
6071 However, doing that would be a waste of time particularly
6072 since elf_find_function will look at the dot-sym anyway.
6073 Now, elf_find_function will keep the largest size of any
6074 function sym found at the code address of interest, so return
6075 1 here to avoid it incorrectly caching a larger function size
6076 for a small function. This does mean we return the wrong
6077 size for a new-ABI function of size 24, but all that does is
6078 disable caching for such functions. */
6084 if (sym->section != sec)
6086 *code_off = sym->value;
6093 /* Return true if symbol is defined in a regular object file. */
6096 is_static_defined (struct elf_link_hash_entry *h)
6098 return ((h->root.type == bfd_link_hash_defined
6099 || h->root.type == bfd_link_hash_defweak)
6100 && h->root.u.def.section != NULL
6101 && h->root.u.def.section->output_section != NULL);
6104 /* If FDH is a function descriptor symbol, return the associated code
6105 entry symbol if it is defined. Return NULL otherwise. */
6107 static struct ppc_link_hash_entry *
6108 defined_code_entry (struct ppc_link_hash_entry *fdh)
6110 if (fdh->is_func_descriptor)
6112 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6113 if (fh->elf.root.type == bfd_link_hash_defined
6114 || fh->elf.root.type == bfd_link_hash_defweak)
6120 /* If FH is a function code entry symbol, return the associated
6121 function descriptor symbol if it is defined. Return NULL otherwise. */
6123 static struct ppc_link_hash_entry *
6124 defined_func_desc (struct ppc_link_hash_entry *fh)
6127 && fh->oh->is_func_descriptor)
6129 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6130 if (fdh->elf.root.type == bfd_link_hash_defined
6131 || fdh->elf.root.type == bfd_link_hash_defweak)
6137 /* Mark all our entry sym sections, both opd and code section. */
6140 ppc64_elf_gc_keep (struct bfd_link_info *info)
6142 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6143 struct bfd_sym_chain *sym;
6148 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6150 struct ppc_link_hash_entry *eh, *fh;
6153 eh = (struct ppc_link_hash_entry *)
6154 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6157 if (eh->elf.root.type != bfd_link_hash_defined
6158 && eh->elf.root.type != bfd_link_hash_defweak)
6161 fh = defined_code_entry (eh);
6164 sec = fh->elf.root.u.def.section;
6165 sec->flags |= SEC_KEEP;
6167 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6168 && opd_entry_value (eh->elf.root.u.def.section,
6169 eh->elf.root.u.def.value,
6170 &sec, NULL, FALSE) != (bfd_vma) -1)
6171 sec->flags |= SEC_KEEP;
6173 sec = eh->elf.root.u.def.section;
6174 sec->flags |= SEC_KEEP;
6178 /* Mark sections containing dynamically referenced symbols. When
6179 building shared libraries, we must assume that any visible symbol is
6183 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6185 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6186 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6187 struct ppc_link_hash_entry *fdh;
6188 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6190 /* Dynamic linking info is on the func descriptor sym. */
6191 fdh = defined_func_desc (eh);
6195 if ((eh->elf.root.type == bfd_link_hash_defined
6196 || eh->elf.root.type == bfd_link_hash_defweak)
6197 && (eh->elf.ref_dynamic
6198 || (eh->elf.def_regular
6199 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6200 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6201 && (!info->executable
6202 || info->export_dynamic
6205 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6206 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6207 || !bfd_hide_sym_by_version (info->version_info,
6208 eh->elf.root.root.string)))))
6211 struct ppc_link_hash_entry *fh;
6213 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6215 /* Function descriptor syms cause the associated
6216 function code sym section to be marked. */
6217 fh = defined_code_entry (eh);
6220 code_sec = fh->elf.root.u.def.section;
6221 code_sec->flags |= SEC_KEEP;
6223 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6224 && opd_entry_value (eh->elf.root.u.def.section,
6225 eh->elf.root.u.def.value,
6226 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6227 code_sec->flags |= SEC_KEEP;
6233 /* Return the section that should be marked against GC for a given
6237 ppc64_elf_gc_mark_hook (asection *sec,
6238 struct bfd_link_info *info,
6239 Elf_Internal_Rela *rel,
6240 struct elf_link_hash_entry *h,
6241 Elf_Internal_Sym *sym)
6245 /* Syms return NULL if we're marking .opd, so we avoid marking all
6246 function sections, as all functions are referenced in .opd. */
6248 if (get_opd_info (sec) != NULL)
6253 enum elf_ppc64_reloc_type r_type;
6254 struct ppc_link_hash_entry *eh, *fh, *fdh;
6256 r_type = ELF64_R_TYPE (rel->r_info);
6259 case R_PPC64_GNU_VTINHERIT:
6260 case R_PPC64_GNU_VTENTRY:
6264 switch (h->root.type)
6266 case bfd_link_hash_defined:
6267 case bfd_link_hash_defweak:
6268 eh = (struct ppc_link_hash_entry *) h;
6269 fdh = defined_func_desc (eh);
6273 /* Function descriptor syms cause the associated
6274 function code sym section to be marked. */
6275 fh = defined_code_entry (eh);
6278 /* They also mark their opd section. */
6279 eh->elf.root.u.def.section->gc_mark = 1;
6281 rsec = fh->elf.root.u.def.section;
6283 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6284 && opd_entry_value (eh->elf.root.u.def.section,
6285 eh->elf.root.u.def.value,
6286 &rsec, NULL, FALSE) != (bfd_vma) -1)
6287 eh->elf.root.u.def.section->gc_mark = 1;
6289 rsec = h->root.u.def.section;
6292 case bfd_link_hash_common:
6293 rsec = h->root.u.c.p->section;
6297 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6303 struct _opd_sec_data *opd;
6305 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6306 opd = get_opd_info (rsec);
6307 if (opd != NULL && opd->func_sec != NULL)
6311 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6318 /* Update the .got, .plt. and dynamic reloc reference counts for the
6319 section being removed. */
6322 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6323 asection *sec, const Elf_Internal_Rela *relocs)
6325 struct ppc_link_hash_table *htab;
6326 Elf_Internal_Shdr *symtab_hdr;
6327 struct elf_link_hash_entry **sym_hashes;
6328 struct got_entry **local_got_ents;
6329 const Elf_Internal_Rela *rel, *relend;
6331 if (info->relocatable)
6334 if ((sec->flags & SEC_ALLOC) == 0)
6337 elf_section_data (sec)->local_dynrel = NULL;
6339 htab = ppc_hash_table (info);
6343 symtab_hdr = &elf_symtab_hdr (abfd);
6344 sym_hashes = elf_sym_hashes (abfd);
6345 local_got_ents = elf_local_got_ents (abfd);
6347 relend = relocs + sec->reloc_count;
6348 for (rel = relocs; rel < relend; rel++)
6350 unsigned long r_symndx;
6351 enum elf_ppc64_reloc_type r_type;
6352 struct elf_link_hash_entry *h = NULL;
6353 unsigned char tls_type = 0;
6355 r_symndx = ELF64_R_SYM (rel->r_info);
6356 r_type = ELF64_R_TYPE (rel->r_info);
6357 if (r_symndx >= symtab_hdr->sh_info)
6359 struct ppc_link_hash_entry *eh;
6360 struct elf_dyn_relocs **pp;
6361 struct elf_dyn_relocs *p;
6363 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6364 h = elf_follow_link (h);
6365 eh = (struct ppc_link_hash_entry *) h;
6367 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6370 /* Everything must go for SEC. */
6376 if (is_branch_reloc (r_type))
6378 struct plt_entry **ifunc = NULL;
6381 if (h->type == STT_GNU_IFUNC)
6382 ifunc = &h->plt.plist;
6384 else if (local_got_ents != NULL)
6386 struct plt_entry **local_plt = (struct plt_entry **)
6387 (local_got_ents + symtab_hdr->sh_info);
6388 unsigned char *local_got_tls_masks = (unsigned char *)
6389 (local_plt + symtab_hdr->sh_info);
6390 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6391 ifunc = local_plt + r_symndx;
6395 struct plt_entry *ent;
6397 for (ent = *ifunc; ent != NULL; ent = ent->next)
6398 if (ent->addend == rel->r_addend)
6402 if (ent->plt.refcount > 0)
6403 ent->plt.refcount -= 1;
6410 case R_PPC64_GOT_TLSLD16:
6411 case R_PPC64_GOT_TLSLD16_LO:
6412 case R_PPC64_GOT_TLSLD16_HI:
6413 case R_PPC64_GOT_TLSLD16_HA:
6414 tls_type = TLS_TLS | TLS_LD;
6417 case R_PPC64_GOT_TLSGD16:
6418 case R_PPC64_GOT_TLSGD16_LO:
6419 case R_PPC64_GOT_TLSGD16_HI:
6420 case R_PPC64_GOT_TLSGD16_HA:
6421 tls_type = TLS_TLS | TLS_GD;
6424 case R_PPC64_GOT_TPREL16_DS:
6425 case R_PPC64_GOT_TPREL16_LO_DS:
6426 case R_PPC64_GOT_TPREL16_HI:
6427 case R_PPC64_GOT_TPREL16_HA:
6428 tls_type = TLS_TLS | TLS_TPREL;
6431 case R_PPC64_GOT_DTPREL16_DS:
6432 case R_PPC64_GOT_DTPREL16_LO_DS:
6433 case R_PPC64_GOT_DTPREL16_HI:
6434 case R_PPC64_GOT_DTPREL16_HA:
6435 tls_type = TLS_TLS | TLS_DTPREL;
6439 case R_PPC64_GOT16_DS:
6440 case R_PPC64_GOT16_HA:
6441 case R_PPC64_GOT16_HI:
6442 case R_PPC64_GOT16_LO:
6443 case R_PPC64_GOT16_LO_DS:
6446 struct got_entry *ent;
6451 ent = local_got_ents[r_symndx];
6453 for (; ent != NULL; ent = ent->next)
6454 if (ent->addend == rel->r_addend
6455 && ent->owner == abfd
6456 && ent->tls_type == tls_type)
6460 if (ent->got.refcount > 0)
6461 ent->got.refcount -= 1;
6465 case R_PPC64_PLT16_HA:
6466 case R_PPC64_PLT16_HI:
6467 case R_PPC64_PLT16_LO:
6471 case R_PPC64_REL14_BRNTAKEN:
6472 case R_PPC64_REL14_BRTAKEN:
6476 struct plt_entry *ent;
6478 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6479 if (ent->addend == rel->r_addend)
6481 if (ent != NULL && ent->plt.refcount > 0)
6482 ent->plt.refcount -= 1;
6493 /* The maximum size of .sfpr. */
6494 #define SFPR_MAX (218*4)
6496 struct sfpr_def_parms
6498 const char name[12];
6499 unsigned char lo, hi;
6500 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6501 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6504 /* Auto-generate _save*, _rest* functions in .sfpr. */
6507 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6509 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6511 size_t len = strlen (parm->name);
6512 bfd_boolean writing = FALSE;
6518 memcpy (sym, parm->name, len);
6521 for (i = parm->lo; i <= parm->hi; i++)
6523 struct elf_link_hash_entry *h;
6525 sym[len + 0] = i / 10 + '0';
6526 sym[len + 1] = i % 10 + '0';
6527 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6531 h->root.type = bfd_link_hash_defined;
6532 h->root.u.def.section = htab->sfpr;
6533 h->root.u.def.value = htab->sfpr->size;
6536 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6538 if (htab->sfpr->contents == NULL)
6540 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6541 if (htab->sfpr->contents == NULL)
6547 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6549 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6551 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6552 htab->sfpr->size = p - htab->sfpr->contents;
6560 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6562 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6567 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6569 p = savegpr0 (abfd, p, r);
6570 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6572 bfd_put_32 (abfd, BLR, p);
6577 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6579 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6584 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6586 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6588 p = restgpr0 (abfd, p, r);
6589 bfd_put_32 (abfd, MTLR_R0, p);
6593 p = restgpr0 (abfd, p, 30);
6594 p = restgpr0 (abfd, p, 31);
6596 bfd_put_32 (abfd, BLR, p);
6601 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6603 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6608 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6610 p = savegpr1 (abfd, p, r);
6611 bfd_put_32 (abfd, BLR, p);
6616 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6618 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6623 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6625 p = restgpr1 (abfd, p, r);
6626 bfd_put_32 (abfd, BLR, p);
6631 savefpr (bfd *abfd, bfd_byte *p, int r)
6633 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6638 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6640 p = savefpr (abfd, p, r);
6641 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6643 bfd_put_32 (abfd, BLR, p);
6648 restfpr (bfd *abfd, bfd_byte *p, int r)
6650 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6655 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6657 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6659 p = restfpr (abfd, p, r);
6660 bfd_put_32 (abfd, MTLR_R0, p);
6664 p = restfpr (abfd, p, 30);
6665 p = restfpr (abfd, p, 31);
6667 bfd_put_32 (abfd, BLR, p);
6672 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6674 p = savefpr (abfd, p, r);
6675 bfd_put_32 (abfd, BLR, p);
6680 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6682 p = restfpr (abfd, p, r);
6683 bfd_put_32 (abfd, BLR, p);
6688 savevr (bfd *abfd, bfd_byte *p, int r)
6690 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6692 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6697 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6699 p = savevr (abfd, p, r);
6700 bfd_put_32 (abfd, BLR, p);
6705 restvr (bfd *abfd, bfd_byte *p, int r)
6707 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6709 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6714 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6716 p = restvr (abfd, p, r);
6717 bfd_put_32 (abfd, BLR, p);
6721 /* Called via elf_link_hash_traverse to transfer dynamic linking
6722 information on function code symbol entries to their corresponding
6723 function descriptor symbol entries. */
6726 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6728 struct bfd_link_info *info;
6729 struct ppc_link_hash_table *htab;
6730 struct plt_entry *ent;
6731 struct ppc_link_hash_entry *fh;
6732 struct ppc_link_hash_entry *fdh;
6733 bfd_boolean force_local;
6735 fh = (struct ppc_link_hash_entry *) h;
6736 if (fh->elf.root.type == bfd_link_hash_indirect)
6740 htab = ppc_hash_table (info);
6744 /* Resolve undefined references to dot-symbols as the value
6745 in the function descriptor, if we have one in a regular object.
6746 This is to satisfy cases like ".quad .foo". Calls to functions
6747 in dynamic objects are handled elsewhere. */
6748 if (fh->elf.root.type == bfd_link_hash_undefweak
6749 && fh->was_undefined
6750 && (fdh = defined_func_desc (fh)) != NULL
6751 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6752 && opd_entry_value (fdh->elf.root.u.def.section,
6753 fdh->elf.root.u.def.value,
6754 &fh->elf.root.u.def.section,
6755 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6757 fh->elf.root.type = fdh->elf.root.type;
6758 fh->elf.forced_local = 1;
6759 fh->elf.def_regular = fdh->elf.def_regular;
6760 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6763 /* If this is a function code symbol, transfer dynamic linking
6764 information to the function descriptor symbol. */
6768 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6769 if (ent->plt.refcount > 0)
6772 || fh->elf.root.root.string[0] != '.'
6773 || fh->elf.root.root.string[1] == '\0')
6776 /* Find the corresponding function descriptor symbol. Create it
6777 as undefined if necessary. */
6779 fdh = lookup_fdh (fh, htab);
6781 && !info->executable
6782 && (fh->elf.root.type == bfd_link_hash_undefined
6783 || fh->elf.root.type == bfd_link_hash_undefweak))
6785 fdh = make_fdh (info, fh);
6790 /* Fake function descriptors are made undefweak. If the function
6791 code symbol is strong undefined, make the fake sym the same.
6792 If the function code symbol is defined, then force the fake
6793 descriptor local; We can't support overriding of symbols in a
6794 shared library on a fake descriptor. */
6798 && fdh->elf.root.type == bfd_link_hash_undefweak)
6800 if (fh->elf.root.type == bfd_link_hash_undefined)
6802 fdh->elf.root.type = bfd_link_hash_undefined;
6803 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6805 else if (fh->elf.root.type == bfd_link_hash_defined
6806 || fh->elf.root.type == bfd_link_hash_defweak)
6808 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6813 && !fdh->elf.forced_local
6814 && (!info->executable
6815 || fdh->elf.def_dynamic
6816 || fdh->elf.ref_dynamic
6817 || (fdh->elf.root.type == bfd_link_hash_undefweak
6818 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6820 if (fdh->elf.dynindx == -1)
6821 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6823 fdh->elf.ref_regular |= fh->elf.ref_regular;
6824 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6825 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6826 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6827 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6829 move_plt_plist (fh, fdh);
6830 fdh->elf.needs_plt = 1;
6832 fdh->is_func_descriptor = 1;
6837 /* Now that the info is on the function descriptor, clear the
6838 function code sym info. Any function code syms for which we
6839 don't have a definition in a regular file, we force local.
6840 This prevents a shared library from exporting syms that have
6841 been imported from another library. Function code syms that
6842 are really in the library we must leave global to prevent the
6843 linker dragging in a definition from a static library. */
6844 force_local = (!fh->elf.def_regular
6846 || !fdh->elf.def_regular
6847 || fdh->elf.forced_local);
6848 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6853 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6854 this hook to a) provide some gcc support functions, and b) transfer
6855 dynamic linking information gathered so far on function code symbol
6856 entries, to their corresponding function descriptor symbol entries. */
6859 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6860 struct bfd_link_info *info)
6862 struct ppc_link_hash_table *htab;
6864 static const struct sfpr_def_parms funcs[] =
6866 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6867 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6868 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6869 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6870 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6871 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6872 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6873 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6874 { "._savef", 14, 31, savefpr, savefpr1_tail },
6875 { "._restf", 14, 31, restfpr, restfpr1_tail },
6876 { "_savevr_", 20, 31, savevr, savevr_tail },
6877 { "_restvr_", 20, 31, restvr, restvr_tail }
6880 htab = ppc_hash_table (info);
6884 if (!info->relocatable
6885 && htab->elf.hgot != NULL)
6887 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6888 /* Make .TOC. defined so as to prevent it being made dynamic.
6889 The wrong value here is fixed later in ppc64_elf_set_toc. */
6890 htab->elf.hgot->type = STT_OBJECT;
6891 htab->elf.hgot->root.type = bfd_link_hash_defined;
6892 htab->elf.hgot->root.u.def.value = 0;
6893 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6894 htab->elf.hgot->def_regular = 1;
6895 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6899 if (htab->sfpr == NULL)
6900 /* We don't have any relocs. */
6903 /* Provide any missing _save* and _rest* functions. */
6904 htab->sfpr->size = 0;
6905 if (htab->params->save_restore_funcs)
6906 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6907 if (!sfpr_define (info, &funcs[i]))
6910 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6912 if (htab->sfpr->size == 0)
6913 htab->sfpr->flags |= SEC_EXCLUDE;
6918 /* Return true if we have dynamic relocs that apply to read-only sections. */
6921 readonly_dynrelocs (struct elf_link_hash_entry *h)
6923 struct ppc_link_hash_entry *eh;
6924 struct elf_dyn_relocs *p;
6926 eh = (struct ppc_link_hash_entry *) h;
6927 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6929 asection *s = p->sec->output_section;
6931 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6937 /* Adjust a symbol defined by a dynamic object and referenced by a
6938 regular object. The current definition is in some section of the
6939 dynamic object, but we're not including those sections. We have to
6940 change the definition to something the rest of the link can
6944 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6945 struct elf_link_hash_entry *h)
6947 struct ppc_link_hash_table *htab;
6950 htab = ppc_hash_table (info);
6954 /* Deal with function syms. */
6955 if (h->type == STT_FUNC
6956 || h->type == STT_GNU_IFUNC
6959 /* Clear procedure linkage table information for any symbol that
6960 won't need a .plt entry. */
6961 struct plt_entry *ent;
6962 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6963 if (ent->plt.refcount > 0)
6966 || (h->type != STT_GNU_IFUNC
6967 && (SYMBOL_CALLS_LOCAL (info, h)
6968 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6969 && h->root.type == bfd_link_hash_undefweak))))
6971 h->plt.plist = NULL;
6974 else if (abiversion (info->output_bfd) == 2)
6976 /* After adjust_dynamic_symbol, non_got_ref set in the
6977 non-shared case means that we have allocated space in
6978 .dynbss for the symbol and thus dyn_relocs for this
6979 symbol should be discarded.
6980 If we get here we know we are making a PLT entry for this
6981 symbol, and in an executable we'd normally resolve
6982 relocations against this symbol to the PLT entry. Allow
6983 dynamic relocs if the reference is weak, and the dynamic
6984 relocs will not cause text relocation. */
6985 if (!h->ref_regular_nonweak
6987 && h->type != STT_GNU_IFUNC
6988 && !readonly_dynrelocs (h))
6991 /* If making a plt entry, then we don't need copy relocs. */
6996 h->plt.plist = NULL;
6998 /* If this is a weak symbol, and there is a real definition, the
6999 processor independent code will have arranged for us to see the
7000 real definition first, and we can just use the same value. */
7001 if (h->u.weakdef != NULL)
7003 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7004 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7005 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7006 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7007 if (ELIMINATE_COPY_RELOCS)
7008 h->non_got_ref = h->u.weakdef->non_got_ref;
7012 /* If we are creating a shared library, we must presume that the
7013 only references to the symbol are via the global offset table.
7014 For such cases we need not do anything here; the relocations will
7015 be handled correctly by relocate_section. */
7019 /* If there are no references to this symbol that do not use the
7020 GOT, we don't need to generate a copy reloc. */
7021 if (!h->non_got_ref)
7024 /* Don't generate a copy reloc for symbols defined in the executable. */
7025 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7028 /* If we didn't find any dynamic relocs in read-only sections, then
7029 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7030 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7036 if (h->plt.plist != NULL)
7038 /* We should never get here, but unfortunately there are versions
7039 of gcc out there that improperly (for this ABI) put initialized
7040 function pointers, vtable refs and suchlike in read-only
7041 sections. Allow them to proceed, but warn that this might
7042 break at runtime. */
7043 info->callbacks->einfo
7044 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7045 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7046 h->root.root.string);
7049 /* This is a reference to a symbol defined by a dynamic object which
7050 is not a function. */
7052 /* We must allocate the symbol in our .dynbss section, which will
7053 become part of the .bss section of the executable. There will be
7054 an entry for this symbol in the .dynsym section. The dynamic
7055 object will contain position independent code, so all references
7056 from the dynamic object to this symbol will go through the global
7057 offset table. The dynamic linker will use the .dynsym entry to
7058 determine the address it must put in the global offset table, so
7059 both the dynamic object and the regular object will refer to the
7060 same memory location for the variable. */
7062 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7063 to copy the initial value out of the dynamic object and into the
7064 runtime process image. We need to remember the offset into the
7065 .rela.bss section we are going to use. */
7066 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7068 htab->relbss->size += sizeof (Elf64_External_Rela);
7074 return _bfd_elf_adjust_dynamic_copy (h, s);
7077 /* If given a function descriptor symbol, hide both the function code
7078 sym and the descriptor. */
7080 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7081 struct elf_link_hash_entry *h,
7082 bfd_boolean force_local)
7084 struct ppc_link_hash_entry *eh;
7085 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7087 eh = (struct ppc_link_hash_entry *) h;
7088 if (eh->is_func_descriptor)
7090 struct ppc_link_hash_entry *fh = eh->oh;
7095 struct ppc_link_hash_table *htab;
7098 /* We aren't supposed to use alloca in BFD because on
7099 systems which do not have alloca the version in libiberty
7100 calls xmalloc, which might cause the program to crash
7101 when it runs out of memory. This function doesn't have a
7102 return status, so there's no way to gracefully return an
7103 error. So cheat. We know that string[-1] can be safely
7104 accessed; It's either a string in an ELF string table,
7105 or allocated in an objalloc structure. */
7107 p = eh->elf.root.root.string - 1;
7110 htab = ppc_hash_table (info);
7114 fh = (struct ppc_link_hash_entry *)
7115 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7118 /* Unfortunately, if it so happens that the string we were
7119 looking for was allocated immediately before this string,
7120 then we overwrote the string terminator. That's the only
7121 reason the lookup should fail. */
7124 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7125 while (q >= eh->elf.root.root.string && *q == *p)
7127 if (q < eh->elf.root.root.string && *p == '.')
7128 fh = (struct ppc_link_hash_entry *)
7129 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7138 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7143 get_sym_h (struct elf_link_hash_entry **hp,
7144 Elf_Internal_Sym **symp,
7146 unsigned char **tls_maskp,
7147 Elf_Internal_Sym **locsymsp,
7148 unsigned long r_symndx,
7151 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7153 if (r_symndx >= symtab_hdr->sh_info)
7155 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7156 struct elf_link_hash_entry *h;
7158 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7159 h = elf_follow_link (h);
7167 if (symsecp != NULL)
7169 asection *symsec = NULL;
7170 if (h->root.type == bfd_link_hash_defined
7171 || h->root.type == bfd_link_hash_defweak)
7172 symsec = h->root.u.def.section;
7176 if (tls_maskp != NULL)
7178 struct ppc_link_hash_entry *eh;
7180 eh = (struct ppc_link_hash_entry *) h;
7181 *tls_maskp = &eh->tls_mask;
7186 Elf_Internal_Sym *sym;
7187 Elf_Internal_Sym *locsyms = *locsymsp;
7189 if (locsyms == NULL)
7191 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7192 if (locsyms == NULL)
7193 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7194 symtab_hdr->sh_info,
7195 0, NULL, NULL, NULL);
7196 if (locsyms == NULL)
7198 *locsymsp = locsyms;
7200 sym = locsyms + r_symndx;
7208 if (symsecp != NULL)
7209 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7211 if (tls_maskp != NULL)
7213 struct got_entry **lgot_ents;
7214 unsigned char *tls_mask;
7217 lgot_ents = elf_local_got_ents (ibfd);
7218 if (lgot_ents != NULL)
7220 struct plt_entry **local_plt = (struct plt_entry **)
7221 (lgot_ents + symtab_hdr->sh_info);
7222 unsigned char *lgot_masks = (unsigned char *)
7223 (local_plt + symtab_hdr->sh_info);
7224 tls_mask = &lgot_masks[r_symndx];
7226 *tls_maskp = tls_mask;
7232 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7233 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7234 type suitable for optimization, and 1 otherwise. */
7237 get_tls_mask (unsigned char **tls_maskp,
7238 unsigned long *toc_symndx,
7239 bfd_vma *toc_addend,
7240 Elf_Internal_Sym **locsymsp,
7241 const Elf_Internal_Rela *rel,
7244 unsigned long r_symndx;
7246 struct elf_link_hash_entry *h;
7247 Elf_Internal_Sym *sym;
7251 r_symndx = ELF64_R_SYM (rel->r_info);
7252 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7255 if ((*tls_maskp != NULL && **tls_maskp != 0)
7257 || ppc64_elf_section_data (sec) == NULL
7258 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7261 /* Look inside a TOC section too. */
7264 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7265 off = h->root.u.def.value;
7268 off = sym->st_value;
7269 off += rel->r_addend;
7270 BFD_ASSERT (off % 8 == 0);
7271 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7272 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7273 if (toc_symndx != NULL)
7274 *toc_symndx = r_symndx;
7275 if (toc_addend != NULL)
7276 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7277 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7279 if ((h == NULL || is_static_defined (h))
7280 && (next_r == -1 || next_r == -2))
7285 /* Find (or create) an entry in the tocsave hash table. */
7287 static struct tocsave_entry *
7288 tocsave_find (struct ppc_link_hash_table *htab,
7289 enum insert_option insert,
7290 Elf_Internal_Sym **local_syms,
7291 const Elf_Internal_Rela *irela,
7294 unsigned long r_indx;
7295 struct elf_link_hash_entry *h;
7296 Elf_Internal_Sym *sym;
7297 struct tocsave_entry ent, *p;
7299 struct tocsave_entry **slot;
7301 r_indx = ELF64_R_SYM (irela->r_info);
7302 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7304 if (ent.sec == NULL || ent.sec->output_section == NULL)
7306 (*_bfd_error_handler)
7307 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7312 ent.offset = h->root.u.def.value;
7314 ent.offset = sym->st_value;
7315 ent.offset += irela->r_addend;
7317 hash = tocsave_htab_hash (&ent);
7318 slot = ((struct tocsave_entry **)
7319 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7325 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7334 /* Adjust all global syms defined in opd sections. In gcc generated
7335 code for the old ABI, these will already have been done. */
7338 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7340 struct ppc_link_hash_entry *eh;
7342 struct _opd_sec_data *opd;
7344 if (h->root.type == bfd_link_hash_indirect)
7347 if (h->root.type != bfd_link_hash_defined
7348 && h->root.type != bfd_link_hash_defweak)
7351 eh = (struct ppc_link_hash_entry *) h;
7352 if (eh->adjust_done)
7355 sym_sec = eh->elf.root.u.def.section;
7356 opd = get_opd_info (sym_sec);
7357 if (opd != NULL && opd->adjust != NULL)
7359 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7362 /* This entry has been deleted. */
7363 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7366 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7367 if (discarded_section (dsec))
7369 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7373 eh->elf.root.u.def.value = 0;
7374 eh->elf.root.u.def.section = dsec;
7377 eh->elf.root.u.def.value += adjust;
7378 eh->adjust_done = 1;
7383 /* Handles decrementing dynamic reloc counts for the reloc specified by
7384 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7385 have already been determined. */
7388 dec_dynrel_count (bfd_vma r_info,
7390 struct bfd_link_info *info,
7391 Elf_Internal_Sym **local_syms,
7392 struct elf_link_hash_entry *h,
7393 Elf_Internal_Sym *sym)
7395 enum elf_ppc64_reloc_type r_type;
7396 asection *sym_sec = NULL;
7398 /* Can this reloc be dynamic? This switch, and later tests here
7399 should be kept in sync with the code in check_relocs. */
7400 r_type = ELF64_R_TYPE (r_info);
7406 case R_PPC64_TPREL16:
7407 case R_PPC64_TPREL16_LO:
7408 case R_PPC64_TPREL16_HI:
7409 case R_PPC64_TPREL16_HA:
7410 case R_PPC64_TPREL16_DS:
7411 case R_PPC64_TPREL16_LO_DS:
7412 case R_PPC64_TPREL16_HIGH:
7413 case R_PPC64_TPREL16_HIGHA:
7414 case R_PPC64_TPREL16_HIGHER:
7415 case R_PPC64_TPREL16_HIGHERA:
7416 case R_PPC64_TPREL16_HIGHEST:
7417 case R_PPC64_TPREL16_HIGHESTA:
7421 case R_PPC64_TPREL64:
7422 case R_PPC64_DTPMOD64:
7423 case R_PPC64_DTPREL64:
7424 case R_PPC64_ADDR64:
7428 case R_PPC64_ADDR14:
7429 case R_PPC64_ADDR14_BRNTAKEN:
7430 case R_PPC64_ADDR14_BRTAKEN:
7431 case R_PPC64_ADDR16:
7432 case R_PPC64_ADDR16_DS:
7433 case R_PPC64_ADDR16_HA:
7434 case R_PPC64_ADDR16_HI:
7435 case R_PPC64_ADDR16_HIGH:
7436 case R_PPC64_ADDR16_HIGHA:
7437 case R_PPC64_ADDR16_HIGHER:
7438 case R_PPC64_ADDR16_HIGHERA:
7439 case R_PPC64_ADDR16_HIGHEST:
7440 case R_PPC64_ADDR16_HIGHESTA:
7441 case R_PPC64_ADDR16_LO:
7442 case R_PPC64_ADDR16_LO_DS:
7443 case R_PPC64_ADDR24:
7444 case R_PPC64_ADDR32:
7445 case R_PPC64_UADDR16:
7446 case R_PPC64_UADDR32:
7447 case R_PPC64_UADDR64:
7452 if (local_syms != NULL)
7454 unsigned long r_symndx;
7455 bfd *ibfd = sec->owner;
7457 r_symndx = ELF64_R_SYM (r_info);
7458 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7463 && (must_be_dyn_reloc (info, r_type)
7465 && (!SYMBOLIC_BIND (info, h)
7466 || h->root.type == bfd_link_hash_defweak
7467 || !h->def_regular))))
7468 || (ELIMINATE_COPY_RELOCS
7471 && (h->root.type == bfd_link_hash_defweak
7472 || !h->def_regular)))
7479 struct elf_dyn_relocs *p;
7480 struct elf_dyn_relocs **pp;
7481 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7483 /* elf_gc_sweep may have already removed all dyn relocs associated
7484 with local syms for a given section. Also, symbol flags are
7485 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7486 report a dynreloc miscount. */
7487 if (*pp == NULL && info->gc_sections)
7490 while ((p = *pp) != NULL)
7494 if (!must_be_dyn_reloc (info, r_type))
7506 struct ppc_dyn_relocs *p;
7507 struct ppc_dyn_relocs **pp;
7509 bfd_boolean is_ifunc;
7511 if (local_syms == NULL)
7512 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7513 if (sym_sec == NULL)
7516 vpp = &elf_section_data (sym_sec)->local_dynrel;
7517 pp = (struct ppc_dyn_relocs **) vpp;
7519 if (*pp == NULL && info->gc_sections)
7522 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7523 while ((p = *pp) != NULL)
7525 if (p->sec == sec && p->ifunc == is_ifunc)
7536 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7538 bfd_set_error (bfd_error_bad_value);
7542 /* Remove unused Official Procedure Descriptor entries. Currently we
7543 only remove those associated with functions in discarded link-once
7544 sections, or weakly defined functions that have been overridden. It
7545 would be possible to remove many more entries for statically linked
7549 ppc64_elf_edit_opd (struct bfd_link_info *info)
7552 bfd_boolean some_edited = FALSE;
7553 asection *need_pad = NULL;
7554 struct ppc_link_hash_table *htab;
7556 htab = ppc_hash_table (info);
7560 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7563 Elf_Internal_Rela *relstart, *rel, *relend;
7564 Elf_Internal_Shdr *symtab_hdr;
7565 Elf_Internal_Sym *local_syms;
7567 struct _opd_sec_data *opd;
7568 bfd_boolean need_edit, add_aux_fields;
7569 bfd_size_type cnt_16b = 0;
7571 if (!is_ppc64_elf (ibfd))
7574 sec = bfd_get_section_by_name (ibfd, ".opd");
7575 if (sec == NULL || sec->size == 0)
7578 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7581 if (sec->output_section == bfd_abs_section_ptr)
7584 /* Look through the section relocs. */
7585 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7589 symtab_hdr = &elf_symtab_hdr (ibfd);
7591 /* Read the relocations. */
7592 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7594 if (relstart == NULL)
7597 /* First run through the relocs to check they are sane, and to
7598 determine whether we need to edit this opd section. */
7602 relend = relstart + sec->reloc_count;
7603 for (rel = relstart; rel < relend; )
7605 enum elf_ppc64_reloc_type r_type;
7606 unsigned long r_symndx;
7608 struct elf_link_hash_entry *h;
7609 Elf_Internal_Sym *sym;
7611 /* .opd contains a regular array of 16 or 24 byte entries. We're
7612 only interested in the reloc pointing to a function entry
7614 if (rel->r_offset != offset
7615 || rel + 1 >= relend
7616 || (rel + 1)->r_offset != offset + 8)
7618 /* If someone messes with .opd alignment then after a
7619 "ld -r" we might have padding in the middle of .opd.
7620 Also, there's nothing to prevent someone putting
7621 something silly in .opd with the assembler. No .opd
7622 optimization for them! */
7624 (*_bfd_error_handler)
7625 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7630 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7631 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7633 (*_bfd_error_handler)
7634 (_("%B: unexpected reloc type %u in .opd section"),
7640 r_symndx = ELF64_R_SYM (rel->r_info);
7641 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7645 if (sym_sec == NULL || sym_sec->owner == NULL)
7647 const char *sym_name;
7649 sym_name = h->root.root.string;
7651 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7654 (*_bfd_error_handler)
7655 (_("%B: undefined sym `%s' in .opd section"),
7661 /* opd entries are always for functions defined in the
7662 current input bfd. If the symbol isn't defined in the
7663 input bfd, then we won't be using the function in this
7664 bfd; It must be defined in a linkonce section in another
7665 bfd, or is weak. It's also possible that we are
7666 discarding the function due to a linker script /DISCARD/,
7667 which we test for via the output_section. */
7668 if (sym_sec->owner != ibfd
7669 || sym_sec->output_section == bfd_abs_section_ptr)
7674 || (rel + 1 == relend && rel->r_offset == offset + 16))
7676 if (sec->size == offset + 24)
7681 if (rel == relend && sec->size == offset + 16)
7689 if (rel->r_offset == offset + 24)
7691 else if (rel->r_offset != offset + 16)
7693 else if (rel + 1 < relend
7694 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7695 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7700 else if (rel + 2 < relend
7701 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7702 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7711 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7713 if (need_edit || add_aux_fields)
7715 Elf_Internal_Rela *write_rel;
7716 Elf_Internal_Shdr *rel_hdr;
7717 bfd_byte *rptr, *wptr;
7718 bfd_byte *new_contents;
7723 new_contents = NULL;
7724 amt = sec->size * sizeof (long) / 8;
7725 opd = &ppc64_elf_section_data (sec)->u.opd;
7726 opd->adjust = bfd_zalloc (sec->owner, amt);
7727 if (opd->adjust == NULL)
7729 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7731 /* This seems a waste of time as input .opd sections are all
7732 zeros as generated by gcc, but I suppose there's no reason
7733 this will always be so. We might start putting something in
7734 the third word of .opd entries. */
7735 if ((sec->flags & SEC_IN_MEMORY) == 0)
7738 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7743 if (local_syms != NULL
7744 && symtab_hdr->contents != (unsigned char *) local_syms)
7746 if (elf_section_data (sec)->relocs != relstart)
7750 sec->contents = loc;
7751 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7754 elf_section_data (sec)->relocs = relstart;
7756 new_contents = sec->contents;
7759 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7760 if (new_contents == NULL)
7764 wptr = new_contents;
7765 rptr = sec->contents;
7767 write_rel = relstart;
7771 for (rel = relstart; rel < relend; rel++)
7773 unsigned long r_symndx;
7775 struct elf_link_hash_entry *h;
7776 Elf_Internal_Sym *sym;
7778 r_symndx = ELF64_R_SYM (rel->r_info);
7779 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7783 if (rel->r_offset == offset)
7785 struct ppc_link_hash_entry *fdh = NULL;
7787 /* See if the .opd entry is full 24 byte or
7788 16 byte (with fd_aux entry overlapped with next
7791 if ((rel + 2 == relend && sec->size == offset + 16)
7792 || (rel + 3 < relend
7793 && rel[2].r_offset == offset + 16
7794 && rel[3].r_offset == offset + 24
7795 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7796 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7800 && h->root.root.string[0] == '.')
7802 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7804 && fdh->elf.root.type != bfd_link_hash_defined
7805 && fdh->elf.root.type != bfd_link_hash_defweak)
7809 skip = (sym_sec->owner != ibfd
7810 || sym_sec->output_section == bfd_abs_section_ptr);
7813 if (fdh != NULL && sym_sec->owner == ibfd)
7815 /* Arrange for the function descriptor sym
7817 fdh->elf.root.u.def.value = 0;
7818 fdh->elf.root.u.def.section = sym_sec;
7820 opd->adjust[rel->r_offset / 8] = -1;
7824 /* We'll be keeping this opd entry. */
7828 /* Redefine the function descriptor symbol to
7829 this location in the opd section. It is
7830 necessary to update the value here rather
7831 than using an array of adjustments as we do
7832 for local symbols, because various places
7833 in the generic ELF code use the value
7834 stored in u.def.value. */
7835 fdh->elf.root.u.def.value = wptr - new_contents;
7836 fdh->adjust_done = 1;
7839 /* Local syms are a bit tricky. We could
7840 tweak them as they can be cached, but
7841 we'd need to look through the local syms
7842 for the function descriptor sym which we
7843 don't have at the moment. So keep an
7844 array of adjustments. */
7845 opd->adjust[rel->r_offset / 8]
7846 = (wptr - new_contents) - (rptr - sec->contents);
7849 memcpy (wptr, rptr, opd_ent_size);
7850 wptr += opd_ent_size;
7851 if (add_aux_fields && opd_ent_size == 16)
7853 memset (wptr, '\0', 8);
7857 rptr += opd_ent_size;
7858 offset += opd_ent_size;
7864 && !info->relocatable
7865 && !dec_dynrel_count (rel->r_info, sec, info,
7871 /* We need to adjust any reloc offsets to point to the
7872 new opd entries. While we're at it, we may as well
7873 remove redundant relocs. */
7874 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7875 if (write_rel != rel)
7876 memcpy (write_rel, rel, sizeof (*rel));
7881 sec->size = wptr - new_contents;
7882 sec->reloc_count = write_rel - relstart;
7885 free (sec->contents);
7886 sec->contents = new_contents;
7889 /* Fudge the header size too, as this is used later in
7890 elf_bfd_final_link if we are emitting relocs. */
7891 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7892 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7895 else if (elf_section_data (sec)->relocs != relstart)
7898 if (local_syms != NULL
7899 && symtab_hdr->contents != (unsigned char *) local_syms)
7901 if (!info->keep_memory)
7904 symtab_hdr->contents = (unsigned char *) local_syms;
7909 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7911 /* If we are doing a final link and the last .opd entry is just 16 byte
7912 long, add a 8 byte padding after it. */
7913 if (need_pad != NULL && !info->relocatable)
7917 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7919 BFD_ASSERT (need_pad->size > 0);
7921 p = bfd_malloc (need_pad->size + 8);
7925 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7926 p, 0, need_pad->size))
7929 need_pad->contents = p;
7930 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7934 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7938 need_pad->contents = p;
7941 memset (need_pad->contents + need_pad->size, 0, 8);
7942 need_pad->size += 8;
7948 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7951 ppc64_elf_tls_setup (struct bfd_link_info *info)
7953 struct ppc_link_hash_table *htab;
7955 htab = ppc_hash_table (info);
7959 if (abiversion (info->output_bfd) == 1)
7962 if (htab->params->no_multi_toc)
7963 htab->do_multi_toc = 0;
7964 else if (!htab->do_multi_toc)
7965 htab->params->no_multi_toc = 1;
7967 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7968 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7969 FALSE, FALSE, TRUE));
7970 /* Move dynamic linking info to the function descriptor sym. */
7971 if (htab->tls_get_addr != NULL)
7972 func_desc_adjust (&htab->tls_get_addr->elf, info);
7973 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7974 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7975 FALSE, FALSE, TRUE));
7976 if (!htab->params->no_tls_get_addr_opt)
7978 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7980 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7981 FALSE, FALSE, TRUE);
7983 func_desc_adjust (opt, info);
7984 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7985 FALSE, FALSE, TRUE);
7987 && (opt_fd->root.type == bfd_link_hash_defined
7988 || opt_fd->root.type == bfd_link_hash_defweak))
7990 /* If glibc supports an optimized __tls_get_addr call stub,
7991 signalled by the presence of __tls_get_addr_opt, and we'll
7992 be calling __tls_get_addr via a plt call stub, then
7993 make __tls_get_addr point to __tls_get_addr_opt. */
7994 tga_fd = &htab->tls_get_addr_fd->elf;
7995 if (htab->elf.dynamic_sections_created
7997 && (tga_fd->type == STT_FUNC
7998 || tga_fd->needs_plt)
7999 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8000 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8001 && tga_fd->root.type == bfd_link_hash_undefweak)))
8003 struct plt_entry *ent;
8005 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8006 if (ent->plt.refcount > 0)
8010 tga_fd->root.type = bfd_link_hash_indirect;
8011 tga_fd->root.u.i.link = &opt_fd->root;
8012 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8013 if (opt_fd->dynindx != -1)
8015 /* Use __tls_get_addr_opt in dynamic relocations. */
8016 opt_fd->dynindx = -1;
8017 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8018 opt_fd->dynstr_index);
8019 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8022 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8023 tga = &htab->tls_get_addr->elf;
8024 if (opt != NULL && tga != NULL)
8026 tga->root.type = bfd_link_hash_indirect;
8027 tga->root.u.i.link = &opt->root;
8028 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8029 _bfd_elf_link_hash_hide_symbol (info, opt,
8031 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8033 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8034 htab->tls_get_addr_fd->is_func_descriptor = 1;
8035 if (htab->tls_get_addr != NULL)
8037 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8038 htab->tls_get_addr->is_func = 1;
8044 htab->params->no_tls_get_addr_opt = TRUE;
8046 return _bfd_elf_tls_setup (info->output_bfd, info);
8049 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8053 branch_reloc_hash_match (const bfd *ibfd,
8054 const Elf_Internal_Rela *rel,
8055 const struct ppc_link_hash_entry *hash1,
8056 const struct ppc_link_hash_entry *hash2)
8058 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8059 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8060 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8062 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8064 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8065 struct elf_link_hash_entry *h;
8067 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8068 h = elf_follow_link (h);
8069 if (h == &hash1->elf || h == &hash2->elf)
8075 /* Run through all the TLS relocs looking for optimization
8076 opportunities. The linker has been hacked (see ppc64elf.em) to do
8077 a preliminary section layout so that we know the TLS segment
8078 offsets. We can't optimize earlier because some optimizations need
8079 to know the tp offset, and we need to optimize before allocating
8080 dynamic relocations. */
8083 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8087 struct ppc_link_hash_table *htab;
8088 unsigned char *toc_ref;
8091 if (info->relocatable || !info->executable)
8094 htab = ppc_hash_table (info);
8098 /* Make two passes over the relocs. On the first pass, mark toc
8099 entries involved with tls relocs, and check that tls relocs
8100 involved in setting up a tls_get_addr call are indeed followed by
8101 such a call. If they are not, we can't do any tls optimization.
8102 On the second pass twiddle tls_mask flags to notify
8103 relocate_section that optimization can be done, and adjust got
8104 and plt refcounts. */
8106 for (pass = 0; pass < 2; ++pass)
8107 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8109 Elf_Internal_Sym *locsyms = NULL;
8110 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8112 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8113 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8115 Elf_Internal_Rela *relstart, *rel, *relend;
8116 bfd_boolean found_tls_get_addr_arg = 0;
8118 /* Read the relocations. */
8119 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8121 if (relstart == NULL)
8127 relend = relstart + sec->reloc_count;
8128 for (rel = relstart; rel < relend; rel++)
8130 enum elf_ppc64_reloc_type r_type;
8131 unsigned long r_symndx;
8132 struct elf_link_hash_entry *h;
8133 Elf_Internal_Sym *sym;
8135 unsigned char *tls_mask;
8136 unsigned char tls_set, tls_clear, tls_type = 0;
8138 bfd_boolean ok_tprel, is_local;
8139 long toc_ref_index = 0;
8140 int expecting_tls_get_addr = 0;
8141 bfd_boolean ret = FALSE;
8143 r_symndx = ELF64_R_SYM (rel->r_info);
8144 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8148 if (elf_section_data (sec)->relocs != relstart)
8150 if (toc_ref != NULL)
8153 && (elf_symtab_hdr (ibfd).contents
8154 != (unsigned char *) locsyms))
8161 if (h->root.type == bfd_link_hash_defined
8162 || h->root.type == bfd_link_hash_defweak)
8163 value = h->root.u.def.value;
8164 else if (h->root.type == bfd_link_hash_undefweak)
8168 found_tls_get_addr_arg = 0;
8173 /* Symbols referenced by TLS relocs must be of type
8174 STT_TLS. So no need for .opd local sym adjust. */
8175 value = sym->st_value;
8184 && h->root.type == bfd_link_hash_undefweak)
8188 value += sym_sec->output_offset;
8189 value += sym_sec->output_section->vma;
8190 value -= htab->elf.tls_sec->vma;
8191 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8192 < (bfd_vma) 1 << 32);
8196 r_type = ELF64_R_TYPE (rel->r_info);
8197 /* If this section has old-style __tls_get_addr calls
8198 without marker relocs, then check that each
8199 __tls_get_addr call reloc is preceded by a reloc
8200 that conceivably belongs to the __tls_get_addr arg
8201 setup insn. If we don't find matching arg setup
8202 relocs, don't do any tls optimization. */
8204 && sec->has_tls_get_addr_call
8206 && (h == &htab->tls_get_addr->elf
8207 || h == &htab->tls_get_addr_fd->elf)
8208 && !found_tls_get_addr_arg
8209 && is_branch_reloc (r_type))
8211 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8212 "TLS optimization disabled\n"),
8213 ibfd, sec, rel->r_offset);
8218 found_tls_get_addr_arg = 0;
8221 case R_PPC64_GOT_TLSLD16:
8222 case R_PPC64_GOT_TLSLD16_LO:
8223 expecting_tls_get_addr = 1;
8224 found_tls_get_addr_arg = 1;
8227 case R_PPC64_GOT_TLSLD16_HI:
8228 case R_PPC64_GOT_TLSLD16_HA:
8229 /* These relocs should never be against a symbol
8230 defined in a shared lib. Leave them alone if
8231 that turns out to be the case. */
8238 tls_type = TLS_TLS | TLS_LD;
8241 case R_PPC64_GOT_TLSGD16:
8242 case R_PPC64_GOT_TLSGD16_LO:
8243 expecting_tls_get_addr = 1;
8244 found_tls_get_addr_arg = 1;
8247 case R_PPC64_GOT_TLSGD16_HI:
8248 case R_PPC64_GOT_TLSGD16_HA:
8254 tls_set = TLS_TLS | TLS_TPRELGD;
8256 tls_type = TLS_TLS | TLS_GD;
8259 case R_PPC64_GOT_TPREL16_DS:
8260 case R_PPC64_GOT_TPREL16_LO_DS:
8261 case R_PPC64_GOT_TPREL16_HI:
8262 case R_PPC64_GOT_TPREL16_HA:
8267 tls_clear = TLS_TPREL;
8268 tls_type = TLS_TLS | TLS_TPREL;
8275 found_tls_get_addr_arg = 1;
8280 case R_PPC64_TOC16_LO:
8281 if (sym_sec == NULL || sym_sec != toc)
8284 /* Mark this toc entry as referenced by a TLS
8285 code sequence. We can do that now in the
8286 case of R_PPC64_TLS, and after checking for
8287 tls_get_addr for the TOC16 relocs. */
8288 if (toc_ref == NULL)
8289 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8290 if (toc_ref == NULL)
8294 value = h->root.u.def.value;
8296 value = sym->st_value;
8297 value += rel->r_addend;
8298 BFD_ASSERT (value < toc->size && value % 8 == 0);
8299 toc_ref_index = (value + toc->output_offset) / 8;
8300 if (r_type == R_PPC64_TLS
8301 || r_type == R_PPC64_TLSGD
8302 || r_type == R_PPC64_TLSLD)
8304 toc_ref[toc_ref_index] = 1;
8308 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8313 expecting_tls_get_addr = 2;
8316 case R_PPC64_TPREL64:
8320 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8325 tls_set = TLS_EXPLICIT;
8326 tls_clear = TLS_TPREL;
8331 case R_PPC64_DTPMOD64:
8335 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8337 if (rel + 1 < relend
8339 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8340 && rel[1].r_offset == rel->r_offset + 8)
8344 tls_set = TLS_EXPLICIT | TLS_GD;
8347 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8356 tls_set = TLS_EXPLICIT;
8367 if (!expecting_tls_get_addr
8368 || !sec->has_tls_get_addr_call)
8371 if (rel + 1 < relend
8372 && branch_reloc_hash_match (ibfd, rel + 1,
8374 htab->tls_get_addr_fd))
8376 if (expecting_tls_get_addr == 2)
8378 /* Check for toc tls entries. */
8379 unsigned char *toc_tls;
8382 retval = get_tls_mask (&toc_tls, NULL, NULL,
8387 if (toc_tls != NULL)
8389 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8390 found_tls_get_addr_arg = 1;
8392 toc_ref[toc_ref_index] = 1;
8398 if (expecting_tls_get_addr != 1)
8401 /* Uh oh, we didn't find the expected call. We
8402 could just mark this symbol to exclude it
8403 from tls optimization but it's safer to skip
8404 the entire optimization. */
8405 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8406 "TLS optimization disabled\n"),
8407 ibfd, sec, rel->r_offset);
8412 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8414 struct plt_entry *ent;
8415 for (ent = htab->tls_get_addr->elf.plt.plist;
8418 if (ent->addend == 0)
8420 if (ent->plt.refcount > 0)
8422 ent->plt.refcount -= 1;
8423 expecting_tls_get_addr = 0;
8429 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8431 struct plt_entry *ent;
8432 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8435 if (ent->addend == 0)
8437 if (ent->plt.refcount > 0)
8438 ent->plt.refcount -= 1;
8446 if ((tls_set & TLS_EXPLICIT) == 0)
8448 struct got_entry *ent;
8450 /* Adjust got entry for this reloc. */
8454 ent = elf_local_got_ents (ibfd)[r_symndx];
8456 for (; ent != NULL; ent = ent->next)
8457 if (ent->addend == rel->r_addend
8458 && ent->owner == ibfd
8459 && ent->tls_type == tls_type)
8466 /* We managed to get rid of a got entry. */
8467 if (ent->got.refcount > 0)
8468 ent->got.refcount -= 1;
8473 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8474 we'll lose one or two dyn relocs. */
8475 if (!dec_dynrel_count (rel->r_info, sec, info,
8479 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8481 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8487 *tls_mask |= tls_set;
8488 *tls_mask &= ~tls_clear;
8491 if (elf_section_data (sec)->relocs != relstart)
8496 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8498 if (!info->keep_memory)
8501 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8505 if (toc_ref != NULL)
8510 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8511 the values of any global symbols in a toc section that has been
8512 edited. Globals in toc sections should be a rarity, so this function
8513 sets a flag if any are found in toc sections other than the one just
8514 edited, so that futher hash table traversals can be avoided. */
8516 struct adjust_toc_info
8519 unsigned long *skip;
8520 bfd_boolean global_toc_syms;
8523 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8526 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8528 struct ppc_link_hash_entry *eh;
8529 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8532 if (h->root.type != bfd_link_hash_defined
8533 && h->root.type != bfd_link_hash_defweak)
8536 eh = (struct ppc_link_hash_entry *) h;
8537 if (eh->adjust_done)
8540 if (eh->elf.root.u.def.section == toc_inf->toc)
8542 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8543 i = toc_inf->toc->rawsize >> 3;
8545 i = eh->elf.root.u.def.value >> 3;
8547 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8549 (*_bfd_error_handler)
8550 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8553 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8554 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8557 eh->elf.root.u.def.value -= toc_inf->skip[i];
8558 eh->adjust_done = 1;
8560 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8561 toc_inf->global_toc_syms = TRUE;
8566 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8569 ok_lo_toc_insn (unsigned int insn)
8571 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8572 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8573 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8574 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8575 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8576 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8577 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8578 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8579 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8580 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8581 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8582 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8583 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8584 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8585 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8587 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8588 && ((insn & 3) == 0 || (insn & 3) == 3))
8589 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8592 /* Examine all relocs referencing .toc sections in order to remove
8593 unused .toc entries. */
8596 ppc64_elf_edit_toc (struct bfd_link_info *info)
8599 struct adjust_toc_info toc_inf;
8600 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8602 htab->do_toc_opt = 1;
8603 toc_inf.global_toc_syms = TRUE;
8604 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8606 asection *toc, *sec;
8607 Elf_Internal_Shdr *symtab_hdr;
8608 Elf_Internal_Sym *local_syms;
8609 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8610 unsigned long *skip, *drop;
8611 unsigned char *used;
8612 unsigned char *keep, last, some_unused;
8614 if (!is_ppc64_elf (ibfd))
8617 toc = bfd_get_section_by_name (ibfd, ".toc");
8620 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8621 || discarded_section (toc))
8626 symtab_hdr = &elf_symtab_hdr (ibfd);
8628 /* Look at sections dropped from the final link. */
8631 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8633 if (sec->reloc_count == 0
8634 || !discarded_section (sec)
8635 || get_opd_info (sec)
8636 || (sec->flags & SEC_ALLOC) == 0
8637 || (sec->flags & SEC_DEBUGGING) != 0)
8640 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8641 if (relstart == NULL)
8644 /* Run through the relocs to see which toc entries might be
8646 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8648 enum elf_ppc64_reloc_type r_type;
8649 unsigned long r_symndx;
8651 struct elf_link_hash_entry *h;
8652 Elf_Internal_Sym *sym;
8655 r_type = ELF64_R_TYPE (rel->r_info);
8662 case R_PPC64_TOC16_LO:
8663 case R_PPC64_TOC16_HI:
8664 case R_PPC64_TOC16_HA:
8665 case R_PPC64_TOC16_DS:
8666 case R_PPC64_TOC16_LO_DS:
8670 r_symndx = ELF64_R_SYM (rel->r_info);
8671 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8679 val = h->root.u.def.value;
8681 val = sym->st_value;
8682 val += rel->r_addend;
8684 if (val >= toc->size)
8687 /* Anything in the toc ought to be aligned to 8 bytes.
8688 If not, don't mark as unused. */
8694 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8699 skip[val >> 3] = ref_from_discarded;
8702 if (elf_section_data (sec)->relocs != relstart)
8706 /* For largetoc loads of address constants, we can convert
8707 . addis rx,2,addr@got@ha
8708 . ld ry,addr@got@l(rx)
8710 . addis rx,2,addr@toc@ha
8711 . addi ry,rx,addr@toc@l
8712 when addr is within 2G of the toc pointer. This then means
8713 that the word storing "addr" in the toc is no longer needed. */
8715 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8716 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8717 && toc->reloc_count != 0)
8719 /* Read toc relocs. */
8720 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8722 if (toc_relocs == NULL)
8725 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8727 enum elf_ppc64_reloc_type r_type;
8728 unsigned long r_symndx;
8730 struct elf_link_hash_entry *h;
8731 Elf_Internal_Sym *sym;
8734 r_type = ELF64_R_TYPE (rel->r_info);
8735 if (r_type != R_PPC64_ADDR64)
8738 r_symndx = ELF64_R_SYM (rel->r_info);
8739 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8744 || discarded_section (sym_sec))
8747 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8752 if (h->type == STT_GNU_IFUNC)
8754 val = h->root.u.def.value;
8758 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8760 val = sym->st_value;
8762 val += rel->r_addend;
8763 val += sym_sec->output_section->vma + sym_sec->output_offset;
8765 /* We don't yet know the exact toc pointer value, but we
8766 know it will be somewhere in the toc section. Don't
8767 optimize if the difference from any possible toc
8768 pointer is outside [ff..f80008000, 7fff7fff]. */
8769 addr = toc->output_section->vma + TOC_BASE_OFF;
8770 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8773 addr = toc->output_section->vma + toc->output_section->rawsize;
8774 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8779 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8784 skip[rel->r_offset >> 3]
8785 |= can_optimize | ((rel - toc_relocs) << 2);
8792 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8796 if (local_syms != NULL
8797 && symtab_hdr->contents != (unsigned char *) local_syms)
8801 && elf_section_data (sec)->relocs != relstart)
8803 if (toc_relocs != NULL
8804 && elf_section_data (toc)->relocs != toc_relocs)
8811 /* Now check all kept sections that might reference the toc.
8812 Check the toc itself last. */
8813 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8816 sec = (sec == toc ? NULL
8817 : sec->next == NULL ? toc
8818 : sec->next == toc && toc->next ? toc->next
8823 if (sec->reloc_count == 0
8824 || discarded_section (sec)
8825 || get_opd_info (sec)
8826 || (sec->flags & SEC_ALLOC) == 0
8827 || (sec->flags & SEC_DEBUGGING) != 0)
8830 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8832 if (relstart == NULL)
8838 /* Mark toc entries referenced as used. */
8842 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8844 enum elf_ppc64_reloc_type r_type;
8845 unsigned long r_symndx;
8847 struct elf_link_hash_entry *h;
8848 Elf_Internal_Sym *sym;
8850 enum {no_check, check_lo, check_ha} insn_check;
8852 r_type = ELF64_R_TYPE (rel->r_info);
8856 insn_check = no_check;
8859 case R_PPC64_GOT_TLSLD16_HA:
8860 case R_PPC64_GOT_TLSGD16_HA:
8861 case R_PPC64_GOT_TPREL16_HA:
8862 case R_PPC64_GOT_DTPREL16_HA:
8863 case R_PPC64_GOT16_HA:
8864 case R_PPC64_TOC16_HA:
8865 insn_check = check_ha;
8868 case R_PPC64_GOT_TLSLD16_LO:
8869 case R_PPC64_GOT_TLSGD16_LO:
8870 case R_PPC64_GOT_TPREL16_LO_DS:
8871 case R_PPC64_GOT_DTPREL16_LO_DS:
8872 case R_PPC64_GOT16_LO:
8873 case R_PPC64_GOT16_LO_DS:
8874 case R_PPC64_TOC16_LO:
8875 case R_PPC64_TOC16_LO_DS:
8876 insn_check = check_lo;
8880 if (insn_check != no_check)
8882 bfd_vma off = rel->r_offset & ~3;
8883 unsigned char buf[4];
8886 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8891 insn = bfd_get_32 (ibfd, buf);
8892 if (insn_check == check_lo
8893 ? !ok_lo_toc_insn (insn)
8894 : ((insn & ((0x3f << 26) | 0x1f << 16))
8895 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8899 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8900 sprintf (str, "%#08x", insn);
8901 info->callbacks->einfo
8902 (_("%P: %H: toc optimization is not supported for"
8903 " %s instruction.\n"),
8904 ibfd, sec, rel->r_offset & ~3, str);
8911 case R_PPC64_TOC16_LO:
8912 case R_PPC64_TOC16_HI:
8913 case R_PPC64_TOC16_HA:
8914 case R_PPC64_TOC16_DS:
8915 case R_PPC64_TOC16_LO_DS:
8916 /* In case we're taking addresses of toc entries. */
8917 case R_PPC64_ADDR64:
8924 r_symndx = ELF64_R_SYM (rel->r_info);
8925 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8936 val = h->root.u.def.value;
8938 val = sym->st_value;
8939 val += rel->r_addend;
8941 if (val >= toc->size)
8944 if ((skip[val >> 3] & can_optimize) != 0)
8951 case R_PPC64_TOC16_HA:
8954 case R_PPC64_TOC16_LO_DS:
8955 off = rel->r_offset;
8956 off += (bfd_big_endian (ibfd) ? -2 : 3);
8957 if (!bfd_get_section_contents (ibfd, sec, &opc,
8963 if ((opc & (0x3f << 2)) == (58u << 2))
8968 /* Wrong sort of reloc, or not a ld. We may
8969 as well clear ref_from_discarded too. */
8976 /* For the toc section, we only mark as used if this
8977 entry itself isn't unused. */
8978 else if ((used[rel->r_offset >> 3]
8979 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
8982 /* Do all the relocs again, to catch reference
8991 if (elf_section_data (sec)->relocs != relstart)
8995 /* Merge the used and skip arrays. Assume that TOC
8996 doublewords not appearing as either used or unused belong
8997 to to an entry more than one doubleword in size. */
8998 for (drop = skip, keep = used, last = 0, some_unused = 0;
8999 drop < skip + (toc->size + 7) / 8;
9004 *drop &= ~ref_from_discarded;
9005 if ((*drop & can_optimize) != 0)
9009 else if ((*drop & ref_from_discarded) != 0)
9012 last = ref_from_discarded;
9022 bfd_byte *contents, *src;
9024 Elf_Internal_Sym *sym;
9025 bfd_boolean local_toc_syms = FALSE;
9027 /* Shuffle the toc contents, and at the same time convert the
9028 skip array from booleans into offsets. */
9029 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9032 elf_section_data (toc)->this_hdr.contents = contents;
9034 for (src = contents, off = 0, drop = skip;
9035 src < contents + toc->size;
9038 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9043 memcpy (src - off, src, 8);
9047 toc->rawsize = toc->size;
9048 toc->size = src - contents - off;
9050 /* Adjust addends for relocs against the toc section sym,
9051 and optimize any accesses we can. */
9052 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9054 if (sec->reloc_count == 0
9055 || discarded_section (sec))
9058 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9060 if (relstart == NULL)
9063 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9065 enum elf_ppc64_reloc_type r_type;
9066 unsigned long r_symndx;
9068 struct elf_link_hash_entry *h;
9071 r_type = ELF64_R_TYPE (rel->r_info);
9078 case R_PPC64_TOC16_LO:
9079 case R_PPC64_TOC16_HI:
9080 case R_PPC64_TOC16_HA:
9081 case R_PPC64_TOC16_DS:
9082 case R_PPC64_TOC16_LO_DS:
9083 case R_PPC64_ADDR64:
9087 r_symndx = ELF64_R_SYM (rel->r_info);
9088 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9096 val = h->root.u.def.value;
9099 val = sym->st_value;
9101 local_toc_syms = TRUE;
9104 val += rel->r_addend;
9106 if (val > toc->rawsize)
9108 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9110 else if ((skip[val >> 3] & can_optimize) != 0)
9112 Elf_Internal_Rela *tocrel
9113 = toc_relocs + (skip[val >> 3] >> 2);
9114 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9118 case R_PPC64_TOC16_HA:
9119 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9122 case R_PPC64_TOC16_LO_DS:
9123 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9127 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9129 info->callbacks->einfo
9130 (_("%P: %H: %s references "
9131 "optimized away TOC entry\n"),
9132 ibfd, sec, rel->r_offset,
9133 ppc64_elf_howto_table[r_type]->name);
9134 bfd_set_error (bfd_error_bad_value);
9137 rel->r_addend = tocrel->r_addend;
9138 elf_section_data (sec)->relocs = relstart;
9142 if (h != NULL || sym->st_value != 0)
9145 rel->r_addend -= skip[val >> 3];
9146 elf_section_data (sec)->relocs = relstart;
9149 if (elf_section_data (sec)->relocs != relstart)
9153 /* We shouldn't have local or global symbols defined in the TOC,
9154 but handle them anyway. */
9155 if (local_syms != NULL)
9156 for (sym = local_syms;
9157 sym < local_syms + symtab_hdr->sh_info;
9159 if (sym->st_value != 0
9160 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9164 if (sym->st_value > toc->rawsize)
9165 i = toc->rawsize >> 3;
9167 i = sym->st_value >> 3;
9169 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9172 (*_bfd_error_handler)
9173 (_("%s defined on removed toc entry"),
9174 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9177 while ((skip[i] & (ref_from_discarded | can_optimize)));
9178 sym->st_value = (bfd_vma) i << 3;
9181 sym->st_value -= skip[i];
9182 symtab_hdr->contents = (unsigned char *) local_syms;
9185 /* Adjust any global syms defined in this toc input section. */
9186 if (toc_inf.global_toc_syms)
9189 toc_inf.skip = skip;
9190 toc_inf.global_toc_syms = FALSE;
9191 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9195 if (toc->reloc_count != 0)
9197 Elf_Internal_Shdr *rel_hdr;
9198 Elf_Internal_Rela *wrel;
9201 /* Remove unused toc relocs, and adjust those we keep. */
9202 if (toc_relocs == NULL)
9203 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9205 if (toc_relocs == NULL)
9209 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9210 if ((skip[rel->r_offset >> 3]
9211 & (ref_from_discarded | can_optimize)) == 0)
9213 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9214 wrel->r_info = rel->r_info;
9215 wrel->r_addend = rel->r_addend;
9218 else if (!dec_dynrel_count (rel->r_info, toc, info,
9219 &local_syms, NULL, NULL))
9222 elf_section_data (toc)->relocs = toc_relocs;
9223 toc->reloc_count = wrel - toc_relocs;
9224 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9225 sz = rel_hdr->sh_entsize;
9226 rel_hdr->sh_size = toc->reloc_count * sz;
9229 else if (toc_relocs != NULL
9230 && elf_section_data (toc)->relocs != toc_relocs)
9233 if (local_syms != NULL
9234 && symtab_hdr->contents != (unsigned char *) local_syms)
9236 if (!info->keep_memory)
9239 symtab_hdr->contents = (unsigned char *) local_syms;
9247 /* Return true iff input section I references the TOC using
9248 instructions limited to +/-32k offsets. */
9251 ppc64_elf_has_small_toc_reloc (asection *i)
9253 return (is_ppc64_elf (i->owner)
9254 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9257 /* Allocate space for one GOT entry. */
9260 allocate_got (struct elf_link_hash_entry *h,
9261 struct bfd_link_info *info,
9262 struct got_entry *gent)
9264 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9266 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9267 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9269 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9270 ? 2 : 1) * sizeof (Elf64_External_Rela);
9271 asection *got = ppc64_elf_tdata (gent->owner)->got;
9273 gent->got.offset = got->size;
9274 got->size += entsize;
9276 dyn = htab->elf.dynamic_sections_created;
9277 if (h->type == STT_GNU_IFUNC)
9279 htab->elf.irelplt->size += rentsize;
9280 htab->got_reli_size += rentsize;
9282 else if ((info->shared
9283 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9284 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9285 || h->root.type != bfd_link_hash_undefweak))
9287 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9288 relgot->size += rentsize;
9292 /* This function merges got entries in the same toc group. */
9295 merge_got_entries (struct got_entry **pent)
9297 struct got_entry *ent, *ent2;
9299 for (ent = *pent; ent != NULL; ent = ent->next)
9300 if (!ent->is_indirect)
9301 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9302 if (!ent2->is_indirect
9303 && ent2->addend == ent->addend
9304 && ent2->tls_type == ent->tls_type
9305 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9307 ent2->is_indirect = TRUE;
9308 ent2->got.ent = ent;
9312 /* Allocate space in .plt, .got and associated reloc sections for
9316 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9318 struct bfd_link_info *info;
9319 struct ppc_link_hash_table *htab;
9321 struct ppc_link_hash_entry *eh;
9322 struct elf_dyn_relocs *p;
9323 struct got_entry **pgent, *gent;
9325 if (h->root.type == bfd_link_hash_indirect)
9328 info = (struct bfd_link_info *) inf;
9329 htab = ppc_hash_table (info);
9333 if ((htab->elf.dynamic_sections_created
9335 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9336 || h->type == STT_GNU_IFUNC)
9338 struct plt_entry *pent;
9339 bfd_boolean doneone = FALSE;
9340 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9341 if (pent->plt.refcount > 0)
9343 if (!htab->elf.dynamic_sections_created
9344 || h->dynindx == -1)
9347 pent->plt.offset = s->size;
9348 s->size += PLT_ENTRY_SIZE (htab);
9349 s = htab->elf.irelplt;
9353 /* If this is the first .plt entry, make room for the special
9357 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9359 pent->plt.offset = s->size;
9361 /* Make room for this entry. */
9362 s->size += PLT_ENTRY_SIZE (htab);
9364 /* Make room for the .glink code. */
9367 s->size += GLINK_CALL_STUB_SIZE;
9370 /* We need bigger stubs past index 32767. */
9371 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9378 /* We also need to make an entry in the .rela.plt section. */
9379 s = htab->elf.srelplt;
9381 s->size += sizeof (Elf64_External_Rela);
9385 pent->plt.offset = (bfd_vma) -1;
9388 h->plt.plist = NULL;
9394 h->plt.plist = NULL;
9398 eh = (struct ppc_link_hash_entry *) h;
9399 /* Run through the TLS GD got entries first if we're changing them
9401 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9402 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9403 if (gent->got.refcount > 0
9404 && (gent->tls_type & TLS_GD) != 0)
9406 /* This was a GD entry that has been converted to TPREL. If
9407 there happens to be a TPREL entry we can use that one. */
9408 struct got_entry *ent;
9409 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9410 if (ent->got.refcount > 0
9411 && (ent->tls_type & TLS_TPREL) != 0
9412 && ent->addend == gent->addend
9413 && ent->owner == gent->owner)
9415 gent->got.refcount = 0;
9419 /* If not, then we'll be using our own TPREL entry. */
9420 if (gent->got.refcount != 0)
9421 gent->tls_type = TLS_TLS | TLS_TPREL;
9424 /* Remove any list entry that won't generate a word in the GOT before
9425 we call merge_got_entries. Otherwise we risk merging to empty
9427 pgent = &h->got.glist;
9428 while ((gent = *pgent) != NULL)
9429 if (gent->got.refcount > 0)
9431 if ((gent->tls_type & TLS_LD) != 0
9434 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9435 *pgent = gent->next;
9438 pgent = &gent->next;
9441 *pgent = gent->next;
9443 if (!htab->do_multi_toc)
9444 merge_got_entries (&h->got.glist);
9446 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9447 if (!gent->is_indirect)
9449 /* Make sure this symbol is output as a dynamic symbol.
9450 Undefined weak syms won't yet be marked as dynamic,
9451 nor will all TLS symbols. */
9452 if (h->dynindx == -1
9454 && h->type != STT_GNU_IFUNC
9455 && htab->elf.dynamic_sections_created)
9457 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9461 if (!is_ppc64_elf (gent->owner))
9464 allocate_got (h, info, gent);
9467 if (eh->dyn_relocs == NULL
9468 || (!htab->elf.dynamic_sections_created
9469 && h->type != STT_GNU_IFUNC))
9472 /* In the shared -Bsymbolic case, discard space allocated for
9473 dynamic pc-relative relocs against symbols which turn out to be
9474 defined in regular objects. For the normal shared case, discard
9475 space for relocs that have become local due to symbol visibility
9480 /* Relocs that use pc_count are those that appear on a call insn,
9481 or certain REL relocs (see must_be_dyn_reloc) that can be
9482 generated via assembly. We want calls to protected symbols to
9483 resolve directly to the function rather than going via the plt.
9484 If people want function pointer comparisons to work as expected
9485 then they should avoid writing weird assembly. */
9486 if (SYMBOL_CALLS_LOCAL (info, h))
9488 struct elf_dyn_relocs **pp;
9490 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9492 p->count -= p->pc_count;
9501 /* Also discard relocs on undefined weak syms with non-default
9503 if (eh->dyn_relocs != NULL
9504 && h->root.type == bfd_link_hash_undefweak)
9506 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9507 eh->dyn_relocs = NULL;
9509 /* Make sure this symbol is output as a dynamic symbol.
9510 Undefined weak syms won't yet be marked as dynamic. */
9511 else if (h->dynindx == -1
9512 && !h->forced_local)
9514 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9519 else if (h->type == STT_GNU_IFUNC)
9521 if (!h->non_got_ref)
9522 eh->dyn_relocs = NULL;
9524 else if (ELIMINATE_COPY_RELOCS)
9526 /* For the non-shared case, discard space for relocs against
9527 symbols which turn out to need copy relocs or are not
9533 /* Make sure this symbol is output as a dynamic symbol.
9534 Undefined weak syms won't yet be marked as dynamic. */
9535 if (h->dynindx == -1
9536 && !h->forced_local)
9538 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9542 /* If that succeeded, we know we'll be keeping all the
9544 if (h->dynindx != -1)
9548 eh->dyn_relocs = NULL;
9553 /* Finally, allocate space. */
9554 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9556 asection *sreloc = elf_section_data (p->sec)->sreloc;
9557 if (eh->elf.type == STT_GNU_IFUNC)
9558 sreloc = htab->elf.irelplt;
9559 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9565 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9566 to set up space for global entry stubs. These are put in glink,
9567 after the branch table. */
9570 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9572 struct bfd_link_info *info;
9573 struct ppc_link_hash_table *htab;
9574 struct plt_entry *pent;
9577 if (h->root.type == bfd_link_hash_indirect)
9580 if (!h->pointer_equality_needed)
9587 htab = ppc_hash_table (info);
9592 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9593 if (pent->plt.offset != (bfd_vma) -1
9594 && pent->addend == 0)
9596 /* For ELFv2, if this symbol is not defined in a regular file
9597 and we are not generating a shared library or pie, then we
9598 need to define the symbol in the executable on a call stub.
9599 This is to avoid text relocations. */
9600 s->size = (s->size + 15) & -16;
9601 h->root.u.def.section = s;
9602 h->root.u.def.value = s->size;
9609 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9610 read-only sections. */
9613 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9615 if (h->root.type == bfd_link_hash_indirect)
9618 if (readonly_dynrelocs (h))
9620 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9622 /* Not an error, just cut short the traversal. */
9628 /* Set the sizes of the dynamic sections. */
9631 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9632 struct bfd_link_info *info)
9634 struct ppc_link_hash_table *htab;
9639 struct got_entry *first_tlsld;
9641 htab = ppc_hash_table (info);
9645 dynobj = htab->elf.dynobj;
9649 if (htab->elf.dynamic_sections_created)
9651 /* Set the contents of the .interp section to the interpreter. */
9652 if (info->executable)
9654 s = bfd_get_linker_section (dynobj, ".interp");
9657 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9658 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9662 /* Set up .got offsets for local syms, and space for local dynamic
9664 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9666 struct got_entry **lgot_ents;
9667 struct got_entry **end_lgot_ents;
9668 struct plt_entry **local_plt;
9669 struct plt_entry **end_local_plt;
9670 unsigned char *lgot_masks;
9671 bfd_size_type locsymcount;
9672 Elf_Internal_Shdr *symtab_hdr;
9674 if (!is_ppc64_elf (ibfd))
9677 for (s = ibfd->sections; s != NULL; s = s->next)
9679 struct ppc_dyn_relocs *p;
9681 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9683 if (!bfd_is_abs_section (p->sec)
9684 && bfd_is_abs_section (p->sec->output_section))
9686 /* Input section has been discarded, either because
9687 it is a copy of a linkonce section or due to
9688 linker script /DISCARD/, so we'll be discarding
9691 else if (p->count != 0)
9693 asection *srel = elf_section_data (p->sec)->sreloc;
9695 srel = htab->elf.irelplt;
9696 srel->size += p->count * sizeof (Elf64_External_Rela);
9697 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9698 info->flags |= DF_TEXTREL;
9703 lgot_ents = elf_local_got_ents (ibfd);
9707 symtab_hdr = &elf_symtab_hdr (ibfd);
9708 locsymcount = symtab_hdr->sh_info;
9709 end_lgot_ents = lgot_ents + locsymcount;
9710 local_plt = (struct plt_entry **) end_lgot_ents;
9711 end_local_plt = local_plt + locsymcount;
9712 lgot_masks = (unsigned char *) end_local_plt;
9713 s = ppc64_elf_tdata (ibfd)->got;
9714 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9716 struct got_entry **pent, *ent;
9719 while ((ent = *pent) != NULL)
9720 if (ent->got.refcount > 0)
9722 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9724 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9729 unsigned int ent_size = 8;
9730 unsigned int rel_size = sizeof (Elf64_External_Rela);
9732 ent->got.offset = s->size;
9733 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9738 s->size += ent_size;
9739 if ((*lgot_masks & PLT_IFUNC) != 0)
9741 htab->elf.irelplt->size += rel_size;
9742 htab->got_reli_size += rel_size;
9744 else if (info->shared)
9746 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9747 srel->size += rel_size;
9756 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9757 for (; local_plt < end_local_plt; ++local_plt)
9759 struct plt_entry *ent;
9761 for (ent = *local_plt; ent != NULL; ent = ent->next)
9762 if (ent->plt.refcount > 0)
9765 ent->plt.offset = s->size;
9766 s->size += PLT_ENTRY_SIZE (htab);
9768 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9771 ent->plt.offset = (bfd_vma) -1;
9775 /* Allocate global sym .plt and .got entries, and space for global
9776 sym dynamic relocs. */
9777 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9778 /* Stash the end of glink branch table. */
9779 if (htab->glink != NULL)
9780 htab->glink->rawsize = htab->glink->size;
9782 if (!htab->opd_abi && !info->shared)
9783 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9786 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9788 struct got_entry *ent;
9790 if (!is_ppc64_elf (ibfd))
9793 ent = ppc64_tlsld_got (ibfd);
9794 if (ent->got.refcount > 0)
9796 if (!htab->do_multi_toc && first_tlsld != NULL)
9798 ent->is_indirect = TRUE;
9799 ent->got.ent = first_tlsld;
9803 if (first_tlsld == NULL)
9805 s = ppc64_elf_tdata (ibfd)->got;
9806 ent->got.offset = s->size;
9811 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9812 srel->size += sizeof (Elf64_External_Rela);
9817 ent->got.offset = (bfd_vma) -1;
9820 /* We now have determined the sizes of the various dynamic sections.
9821 Allocate memory for them. */
9823 for (s = dynobj->sections; s != NULL; s = s->next)
9825 if ((s->flags & SEC_LINKER_CREATED) == 0)
9828 if (s == htab->brlt || s == htab->relbrlt)
9829 /* These haven't been allocated yet; don't strip. */
9831 else if (s == htab->elf.sgot
9832 || s == htab->elf.splt
9833 || s == htab->elf.iplt
9835 || s == htab->dynbss)
9837 /* Strip this section if we don't need it; see the
9840 else if (s == htab->glink_eh_frame)
9842 if (!bfd_is_abs_section (s->output_section))
9843 /* Not sized yet. */
9846 else if (CONST_STRNEQ (s->name, ".rela"))
9850 if (s != htab->elf.srelplt)
9853 /* We use the reloc_count field as a counter if we need
9854 to copy relocs into the output file. */
9860 /* It's not one of our sections, so don't allocate space. */
9866 /* If we don't need this section, strip it from the
9867 output file. This is mostly to handle .rela.bss and
9868 .rela.plt. We must create both sections in
9869 create_dynamic_sections, because they must be created
9870 before the linker maps input sections to output
9871 sections. The linker does that before
9872 adjust_dynamic_symbol is called, and it is that
9873 function which decides whether anything needs to go
9874 into these sections. */
9875 s->flags |= SEC_EXCLUDE;
9879 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9882 /* Allocate memory for the section contents. We use bfd_zalloc
9883 here in case unused entries are not reclaimed before the
9884 section's contents are written out. This should not happen,
9885 but this way if it does we get a R_PPC64_NONE reloc in .rela
9886 sections instead of garbage.
9887 We also rely on the section contents being zero when writing
9889 s->contents = bfd_zalloc (dynobj, s->size);
9890 if (s->contents == NULL)
9894 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9896 if (!is_ppc64_elf (ibfd))
9899 s = ppc64_elf_tdata (ibfd)->got;
9900 if (s != NULL && s != htab->elf.sgot)
9903 s->flags |= SEC_EXCLUDE;
9906 s->contents = bfd_zalloc (ibfd, s->size);
9907 if (s->contents == NULL)
9911 s = ppc64_elf_tdata (ibfd)->relgot;
9915 s->flags |= SEC_EXCLUDE;
9918 s->contents = bfd_zalloc (ibfd, s->size);
9919 if (s->contents == NULL)
9927 if (htab->elf.dynamic_sections_created)
9929 bfd_boolean tls_opt;
9931 /* Add some entries to the .dynamic section. We fill in the
9932 values later, in ppc64_elf_finish_dynamic_sections, but we
9933 must add the entries now so that we get the correct size for
9934 the .dynamic section. The DT_DEBUG entry is filled in by the
9935 dynamic linker and used by the debugger. */
9936 #define add_dynamic_entry(TAG, VAL) \
9937 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9939 if (info->executable)
9941 if (!add_dynamic_entry (DT_DEBUG, 0))
9945 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
9947 if (!add_dynamic_entry (DT_PLTGOT, 0)
9948 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9949 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9950 || !add_dynamic_entry (DT_JMPREL, 0)
9951 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9955 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
9957 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9958 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9962 tls_opt = (!htab->params->no_tls_get_addr_opt
9963 && htab->tls_get_addr_fd != NULL
9964 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9965 if (tls_opt || !htab->opd_abi)
9967 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
9973 if (!add_dynamic_entry (DT_RELA, 0)
9974 || !add_dynamic_entry (DT_RELASZ, 0)
9975 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9978 /* If any dynamic relocs apply to a read-only section,
9979 then we need a DT_TEXTREL entry. */
9980 if ((info->flags & DF_TEXTREL) == 0)
9981 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
9983 if ((info->flags & DF_TEXTREL) != 0)
9985 if (!add_dynamic_entry (DT_TEXTREL, 0))
9990 #undef add_dynamic_entry
9995 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
9998 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10000 if (h->plt.plist != NULL
10002 && !h->pointer_equality_needed)
10005 return _bfd_elf_hash_symbol (h);
10008 /* Determine the type of stub needed, if any, for a call. */
10010 static inline enum ppc_stub_type
10011 ppc_type_of_stub (asection *input_sec,
10012 const Elf_Internal_Rela *rel,
10013 struct ppc_link_hash_entry **hash,
10014 struct plt_entry **plt_ent,
10015 bfd_vma destination,
10016 unsigned long local_off)
10018 struct ppc_link_hash_entry *h = *hash;
10020 bfd_vma branch_offset;
10021 bfd_vma max_branch_offset;
10022 enum elf_ppc64_reloc_type r_type;
10026 struct plt_entry *ent;
10027 struct ppc_link_hash_entry *fdh = h;
10029 && h->oh->is_func_descriptor)
10031 fdh = ppc_follow_link (h->oh);
10035 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10036 if (ent->addend == rel->r_addend
10037 && ent->plt.offset != (bfd_vma) -1)
10040 return ppc_stub_plt_call;
10043 /* Here, we know we don't have a plt entry. If we don't have a
10044 either a defined function descriptor or a defined entry symbol
10045 in a regular object file, then it is pointless trying to make
10046 any other type of stub. */
10047 if (!is_static_defined (&fdh->elf)
10048 && !is_static_defined (&h->elf))
10049 return ppc_stub_none;
10051 else if (elf_local_got_ents (input_sec->owner) != NULL)
10053 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10054 struct plt_entry **local_plt = (struct plt_entry **)
10055 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10056 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10058 if (local_plt[r_symndx] != NULL)
10060 struct plt_entry *ent;
10062 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10063 if (ent->addend == rel->r_addend
10064 && ent->plt.offset != (bfd_vma) -1)
10067 return ppc_stub_plt_call;
10072 /* Determine where the call point is. */
10073 location = (input_sec->output_offset
10074 + input_sec->output_section->vma
10077 branch_offset = destination - location;
10078 r_type = ELF64_R_TYPE (rel->r_info);
10080 /* Determine if a long branch stub is needed. */
10081 max_branch_offset = 1 << 25;
10082 if (r_type != R_PPC64_REL24)
10083 max_branch_offset = 1 << 15;
10085 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10086 /* We need a stub. Figure out whether a long_branch or plt_branch
10087 is needed later. */
10088 return ppc_stub_long_branch;
10090 return ppc_stub_none;
10093 /* With power7 weakly ordered memory model, it is possible for ld.so
10094 to update a plt entry in one thread and have another thread see a
10095 stale zero toc entry. To avoid this we need some sort of acquire
10096 barrier in the call stub. One solution is to make the load of the
10097 toc word seem to appear to depend on the load of the function entry
10098 word. Another solution is to test for r2 being zero, and branch to
10099 the appropriate glink entry if so.
10101 . fake dep barrier compare
10102 . ld 12,xxx(2) ld 12,xxx(2)
10103 . mtctr 12 mtctr 12
10104 . xor 11,12,12 ld 2,xxx+8(2)
10105 . add 2,2,11 cmpldi 2,0
10106 . ld 2,xxx+8(2) bnectr+
10107 . bctr b <glink_entry>
10109 The solution involving the compare turns out to be faster, so
10110 that's what we use unless the branch won't reach. */
10112 #define ALWAYS_USE_FAKE_DEP 0
10113 #define ALWAYS_EMIT_R2SAVE 0
10115 #define PPC_LO(v) ((v) & 0xffff)
10116 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10117 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10119 static inline unsigned int
10120 plt_stub_size (struct ppc_link_hash_table *htab,
10121 struct ppc_stub_hash_entry *stub_entry,
10124 unsigned size = 12;
10126 if (ALWAYS_EMIT_R2SAVE
10127 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10129 if (PPC_HA (off) != 0)
10134 if (htab->params->plt_static_chain)
10136 if (htab->params->plt_thread_safe)
10138 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10141 if (stub_entry->h != NULL
10142 && (stub_entry->h == htab->tls_get_addr_fd
10143 || stub_entry->h == htab->tls_get_addr)
10144 && !htab->params->no_tls_get_addr_opt)
10149 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10150 then return the padding needed to do so. */
10151 static inline unsigned int
10152 plt_stub_pad (struct ppc_link_hash_table *htab,
10153 struct ppc_stub_hash_entry *stub_entry,
10156 int stub_align = 1 << htab->params->plt_stub_align;
10157 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10158 bfd_vma stub_off = stub_entry->stub_sec->size;
10160 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10161 > (stub_size & -stub_align))
10162 return stub_align - (stub_off & (stub_align - 1));
10166 /* Build a .plt call stub. */
10168 static inline bfd_byte *
10169 build_plt_stub (struct ppc_link_hash_table *htab,
10170 struct ppc_stub_hash_entry *stub_entry,
10171 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10173 bfd *obfd = htab->params->stub_bfd;
10174 bfd_boolean plt_load_toc = htab->opd_abi;
10175 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10176 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
10177 bfd_boolean use_fake_dep = plt_thread_safe;
10178 bfd_vma cmp_branch_off = 0;
10180 if (!ALWAYS_USE_FAKE_DEP
10183 && !(stub_entry->h != NULL
10184 && (stub_entry->h == htab->tls_get_addr_fd
10185 || stub_entry->h == htab->tls_get_addr)
10186 && !htab->params->no_tls_get_addr_opt))
10188 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10189 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10190 / PLT_ENTRY_SIZE (htab));
10191 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10194 if (pltindex > 32768)
10195 glinkoff += (pltindex - 32768) * 4;
10197 + htab->glink->output_offset
10198 + htab->glink->output_section->vma);
10199 from = (p - stub_entry->stub_sec->contents
10200 + 4 * (ALWAYS_EMIT_R2SAVE
10201 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10202 + 4 * (PPC_HA (offset) != 0)
10203 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10204 != PPC_HA (offset))
10205 + 4 * (plt_static_chain != 0)
10207 + stub_entry->stub_sec->output_offset
10208 + stub_entry->stub_sec->output_section->vma);
10209 cmp_branch_off = to - from;
10210 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10213 if (PPC_HA (offset) != 0)
10217 if (ALWAYS_EMIT_R2SAVE
10218 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10219 r[0].r_offset += 4;
10220 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10221 r[1].r_offset = r[0].r_offset + 4;
10222 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10223 r[1].r_addend = r[0].r_addend;
10226 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10228 r[2].r_offset = r[1].r_offset + 4;
10229 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10230 r[2].r_addend = r[0].r_addend;
10234 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10235 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10236 r[2].r_addend = r[0].r_addend + 8;
10237 if (plt_static_chain)
10239 r[3].r_offset = r[2].r_offset + 4;
10240 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10241 r[3].r_addend = r[0].r_addend + 16;
10246 if (ALWAYS_EMIT_R2SAVE
10247 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10248 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10249 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10250 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10252 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10254 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10257 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10262 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10263 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10265 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10266 if (plt_static_chain)
10267 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10274 if (ALWAYS_EMIT_R2SAVE
10275 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10276 r[0].r_offset += 4;
10277 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10280 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10282 r[1].r_offset = r[0].r_offset + 4;
10283 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10284 r[1].r_addend = r[0].r_addend;
10288 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10289 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10290 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10291 if (plt_static_chain)
10293 r[2].r_offset = r[1].r_offset + 4;
10294 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10295 r[2].r_addend = r[0].r_addend + 8;
10300 if (ALWAYS_EMIT_R2SAVE
10301 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10302 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10303 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10305 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10307 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10310 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10315 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10316 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10318 if (plt_static_chain)
10319 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10320 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10323 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10325 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10326 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10327 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10330 bfd_put_32 (obfd, BCTR, p), p += 4;
10334 /* Build a special .plt call stub for __tls_get_addr. */
10336 #define LD_R11_0R3 0xe9630000
10337 #define LD_R12_0R3 0xe9830000
10338 #define MR_R0_R3 0x7c601b78
10339 #define CMPDI_R11_0 0x2c2b0000
10340 #define ADD_R3_R12_R13 0x7c6c6a14
10341 #define BEQLR 0x4d820020
10342 #define MR_R3_R0 0x7c030378
10343 #define STD_R11_0R1 0xf9610000
10344 #define BCTRL 0x4e800421
10345 #define LD_R11_0R1 0xe9610000
10346 #define MTLR_R11 0x7d6803a6
10348 static inline bfd_byte *
10349 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10350 struct ppc_stub_hash_entry *stub_entry,
10351 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10353 bfd *obfd = htab->params->stub_bfd;
10355 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10356 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10357 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10358 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10359 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10360 bfd_put_32 (obfd, BEQLR, p), p += 4;
10361 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10362 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10363 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10366 r[0].r_offset += 9 * 4;
10367 p = build_plt_stub (htab, stub_entry, p, offset, r);
10368 bfd_put_32 (obfd, BCTRL, p - 4);
10370 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10371 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10372 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10373 bfd_put_32 (obfd, BLR, p), p += 4;
10378 static Elf_Internal_Rela *
10379 get_relocs (asection *sec, int count)
10381 Elf_Internal_Rela *relocs;
10382 struct bfd_elf_section_data *elfsec_data;
10384 elfsec_data = elf_section_data (sec);
10385 relocs = elfsec_data->relocs;
10386 if (relocs == NULL)
10388 bfd_size_type relsize;
10389 relsize = sec->reloc_count * sizeof (*relocs);
10390 relocs = bfd_alloc (sec->owner, relsize);
10391 if (relocs == NULL)
10393 elfsec_data->relocs = relocs;
10394 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10395 sizeof (Elf_Internal_Shdr));
10396 if (elfsec_data->rela.hdr == NULL)
10398 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10399 * sizeof (Elf64_External_Rela));
10400 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10401 sec->reloc_count = 0;
10403 relocs += sec->reloc_count;
10404 sec->reloc_count += count;
10409 get_r2off (struct bfd_link_info *info,
10410 struct ppc_stub_hash_entry *stub_entry)
10412 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10413 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10417 /* Support linking -R objects. Get the toc pointer from the
10420 if (!htab->opd_abi)
10422 asection *opd = stub_entry->h->elf.root.u.def.section;
10423 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10425 if (strcmp (opd->name, ".opd") != 0
10426 || opd->reloc_count != 0)
10428 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10429 stub_entry->h->elf.root.root.string);
10430 bfd_set_error (bfd_error_bad_value);
10433 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10435 r2off = bfd_get_64 (opd->owner, buf);
10436 r2off -= elf_gp (info->output_bfd);
10438 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10443 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10445 struct ppc_stub_hash_entry *stub_entry;
10446 struct ppc_branch_hash_entry *br_entry;
10447 struct bfd_link_info *info;
10448 struct ppc_link_hash_table *htab;
10453 Elf_Internal_Rela *r;
10456 /* Massage our args to the form they really have. */
10457 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10460 htab = ppc_hash_table (info);
10464 /* Make a note of the offset within the stubs for this entry. */
10465 stub_entry->stub_offset = stub_entry->stub_sec->size;
10466 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10468 htab->stub_count[stub_entry->stub_type - 1] += 1;
10469 switch (stub_entry->stub_type)
10471 case ppc_stub_long_branch:
10472 case ppc_stub_long_branch_r2off:
10473 /* Branches are relative. This is where we are going to. */
10474 dest = (stub_entry->target_value
10475 + stub_entry->target_section->output_offset
10476 + stub_entry->target_section->output_section->vma);
10477 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10480 /* And this is where we are coming from. */
10481 off -= (stub_entry->stub_offset
10482 + stub_entry->stub_sec->output_offset
10483 + stub_entry->stub_sec->output_section->vma);
10486 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10488 bfd_vma r2off = get_r2off (info, stub_entry);
10492 htab->stub_error = TRUE;
10495 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10498 if (PPC_HA (r2off) != 0)
10501 bfd_put_32 (htab->params->stub_bfd,
10502 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10505 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10509 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10511 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10513 info->callbacks->einfo
10514 (_("%P: long branch stub `%s' offset overflow\n"),
10515 stub_entry->root.string);
10516 htab->stub_error = TRUE;
10520 if (info->emitrelocations)
10522 r = get_relocs (stub_entry->stub_sec, 1);
10525 r->r_offset = loc - stub_entry->stub_sec->contents;
10526 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10527 r->r_addend = dest;
10528 if (stub_entry->h != NULL)
10530 struct elf_link_hash_entry **hashes;
10531 unsigned long symndx;
10532 struct ppc_link_hash_entry *h;
10534 hashes = elf_sym_hashes (htab->params->stub_bfd);
10535 if (hashes == NULL)
10537 bfd_size_type hsize;
10539 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10540 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10541 if (hashes == NULL)
10543 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10544 htab->stub_globals = 1;
10546 symndx = htab->stub_globals++;
10548 hashes[symndx] = &h->elf;
10549 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10550 if (h->oh != NULL && h->oh->is_func)
10551 h = ppc_follow_link (h->oh);
10552 if (h->elf.root.u.def.section != stub_entry->target_section)
10553 /* H is an opd symbol. The addend must be zero. */
10557 off = (h->elf.root.u.def.value
10558 + h->elf.root.u.def.section->output_offset
10559 + h->elf.root.u.def.section->output_section->vma);
10560 r->r_addend -= off;
10566 case ppc_stub_plt_branch:
10567 case ppc_stub_plt_branch_r2off:
10568 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10569 stub_entry->root.string + 9,
10571 if (br_entry == NULL)
10573 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10574 stub_entry->root.string);
10575 htab->stub_error = TRUE;
10579 dest = (stub_entry->target_value
10580 + stub_entry->target_section->output_offset
10581 + stub_entry->target_section->output_section->vma);
10582 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10583 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10585 bfd_put_64 (htab->brlt->owner, dest,
10586 htab->brlt->contents + br_entry->offset);
10588 if (br_entry->iter == htab->stub_iteration)
10590 br_entry->iter = 0;
10592 if (htab->relbrlt != NULL)
10594 /* Create a reloc for the branch lookup table entry. */
10595 Elf_Internal_Rela rela;
10598 rela.r_offset = (br_entry->offset
10599 + htab->brlt->output_offset
10600 + htab->brlt->output_section->vma);
10601 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10602 rela.r_addend = dest;
10604 rl = htab->relbrlt->contents;
10605 rl += (htab->relbrlt->reloc_count++
10606 * sizeof (Elf64_External_Rela));
10607 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10609 else if (info->emitrelocations)
10611 r = get_relocs (htab->brlt, 1);
10614 /* brlt, being SEC_LINKER_CREATED does not go through the
10615 normal reloc processing. Symbols and offsets are not
10616 translated from input file to output file form, so
10617 set up the offset per the output file. */
10618 r->r_offset = (br_entry->offset
10619 + htab->brlt->output_offset
10620 + htab->brlt->output_section->vma);
10621 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10622 r->r_addend = dest;
10626 dest = (br_entry->offset
10627 + htab->brlt->output_offset
10628 + htab->brlt->output_section->vma);
10631 - elf_gp (htab->brlt->output_section->owner)
10632 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10634 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10636 info->callbacks->einfo
10637 (_("%P: linkage table error against `%T'\n"),
10638 stub_entry->root.string);
10639 bfd_set_error (bfd_error_bad_value);
10640 htab->stub_error = TRUE;
10644 if (info->emitrelocations)
10646 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10649 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10650 if (bfd_big_endian (info->output_bfd))
10651 r[0].r_offset += 2;
10652 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10653 r[0].r_offset += 4;
10654 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10655 r[0].r_addend = dest;
10656 if (PPC_HA (off) != 0)
10658 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10659 r[1].r_offset = r[0].r_offset + 4;
10660 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10661 r[1].r_addend = r[0].r_addend;
10665 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10667 if (PPC_HA (off) != 0)
10670 bfd_put_32 (htab->params->stub_bfd,
10671 ADDIS_R11_R2 | PPC_HA (off), loc);
10673 bfd_put_32 (htab->params->stub_bfd,
10674 LD_R12_0R11 | PPC_LO (off), loc);
10679 bfd_put_32 (htab->params->stub_bfd,
10680 LD_R12_0R2 | PPC_LO (off), loc);
10685 bfd_vma r2off = get_r2off (info, stub_entry);
10687 if (r2off == 0 && htab->opd_abi)
10689 htab->stub_error = TRUE;
10693 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10696 if (PPC_HA (off) != 0)
10699 bfd_put_32 (htab->params->stub_bfd,
10700 ADDIS_R11_R2 | PPC_HA (off), loc);
10702 bfd_put_32 (htab->params->stub_bfd,
10703 LD_R12_0R11 | PPC_LO (off), loc);
10706 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10708 if (PPC_HA (r2off) != 0)
10712 bfd_put_32 (htab->params->stub_bfd,
10713 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10715 if (PPC_LO (r2off) != 0)
10719 bfd_put_32 (htab->params->stub_bfd,
10720 ADDI_R2_R2 | PPC_LO (r2off), loc);
10724 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10726 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10729 case ppc_stub_plt_call:
10730 case ppc_stub_plt_call_r2save:
10731 if (stub_entry->h != NULL
10732 && stub_entry->h->is_func_descriptor
10733 && stub_entry->h->oh != NULL)
10735 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10737 /* If the old-ABI "dot-symbol" is undefined make it weak so
10738 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10739 FIXME: We used to define the symbol on one of the call
10740 stubs instead, which is why we test symbol section id
10741 against htab->top_id in various places. Likely all
10742 these checks could now disappear. */
10743 if (fh->elf.root.type == bfd_link_hash_undefined)
10744 fh->elf.root.type = bfd_link_hash_undefweak;
10745 /* Stop undo_symbol_twiddle changing it back to undefined. */
10746 fh->was_undefined = 0;
10749 /* Now build the stub. */
10750 dest = stub_entry->plt_ent->plt.offset & ~1;
10751 if (dest >= (bfd_vma) -2)
10754 plt = htab->elf.splt;
10755 if (!htab->elf.dynamic_sections_created
10756 || stub_entry->h == NULL
10757 || stub_entry->h->elf.dynindx == -1)
10758 plt = htab->elf.iplt;
10760 dest += plt->output_offset + plt->output_section->vma;
10762 if (stub_entry->h == NULL
10763 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10765 Elf_Internal_Rela rela;
10768 rela.r_offset = dest;
10770 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10772 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10773 rela.r_addend = (stub_entry->target_value
10774 + stub_entry->target_section->output_offset
10775 + stub_entry->target_section->output_section->vma);
10777 rl = (htab->elf.irelplt->contents
10778 + (htab->elf.irelplt->reloc_count++
10779 * sizeof (Elf64_External_Rela)));
10780 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10781 stub_entry->plt_ent->plt.offset |= 1;
10785 - elf_gp (plt->output_section->owner)
10786 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10788 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10790 info->callbacks->einfo
10791 (_("%P: linkage table error against `%T'\n"),
10792 stub_entry->h != NULL
10793 ? stub_entry->h->elf.root.root.string
10795 bfd_set_error (bfd_error_bad_value);
10796 htab->stub_error = TRUE;
10800 if (htab->params->plt_stub_align != 0)
10802 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10804 stub_entry->stub_sec->size += pad;
10805 stub_entry->stub_offset = stub_entry->stub_sec->size;
10810 if (info->emitrelocations)
10812 r = get_relocs (stub_entry->stub_sec,
10813 ((PPC_HA (off) != 0)
10815 ? 2 + (htab->params->plt_static_chain
10816 && PPC_HA (off + 16) == PPC_HA (off))
10820 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10821 if (bfd_big_endian (info->output_bfd))
10822 r[0].r_offset += 2;
10823 r[0].r_addend = dest;
10825 if (stub_entry->h != NULL
10826 && (stub_entry->h == htab->tls_get_addr_fd
10827 || stub_entry->h == htab->tls_get_addr)
10828 && !htab->params->no_tls_get_addr_opt)
10829 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10831 p = build_plt_stub (htab, stub_entry, loc, off, r);
10840 stub_entry->stub_sec->size += size;
10842 if (htab->params->emit_stub_syms)
10844 struct elf_link_hash_entry *h;
10847 const char *const stub_str[] = { "long_branch",
10848 "long_branch_r2off",
10850 "plt_branch_r2off",
10854 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10855 len2 = strlen (stub_entry->root.string);
10856 name = bfd_malloc (len1 + len2 + 2);
10859 memcpy (name, stub_entry->root.string, 9);
10860 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10861 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10862 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10865 if (h->root.type == bfd_link_hash_new)
10867 h->root.type = bfd_link_hash_defined;
10868 h->root.u.def.section = stub_entry->stub_sec;
10869 h->root.u.def.value = stub_entry->stub_offset;
10870 h->ref_regular = 1;
10871 h->def_regular = 1;
10872 h->ref_regular_nonweak = 1;
10873 h->forced_local = 1;
10881 /* As above, but don't actually build the stub. Just bump offset so
10882 we know stub section sizes, and select plt_branch stubs where
10883 long_branch stubs won't do. */
10886 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10888 struct ppc_stub_hash_entry *stub_entry;
10889 struct bfd_link_info *info;
10890 struct ppc_link_hash_table *htab;
10894 /* Massage our args to the form they really have. */
10895 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10898 htab = ppc_hash_table (info);
10902 if (stub_entry->stub_type == ppc_stub_plt_call
10903 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10906 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10907 if (off >= (bfd_vma) -2)
10909 plt = htab->elf.splt;
10910 if (!htab->elf.dynamic_sections_created
10911 || stub_entry->h == NULL
10912 || stub_entry->h->elf.dynindx == -1)
10913 plt = htab->elf.iplt;
10914 off += (plt->output_offset
10915 + plt->output_section->vma
10916 - elf_gp (plt->output_section->owner)
10917 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10919 size = plt_stub_size (htab, stub_entry, off);
10920 if (htab->params->plt_stub_align)
10921 size += plt_stub_pad (htab, stub_entry, off);
10922 if (info->emitrelocations)
10924 stub_entry->stub_sec->reloc_count
10925 += ((PPC_HA (off) != 0)
10927 ? 2 + (htab->params->plt_static_chain
10928 && PPC_HA (off + 16) == PPC_HA (off))
10930 stub_entry->stub_sec->flags |= SEC_RELOC;
10935 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10938 bfd_vma local_off = 0;
10940 off = (stub_entry->target_value
10941 + stub_entry->target_section->output_offset
10942 + stub_entry->target_section->output_section->vma);
10943 off -= (stub_entry->stub_sec->size
10944 + stub_entry->stub_sec->output_offset
10945 + stub_entry->stub_sec->output_section->vma);
10947 /* Reset the stub type from the plt variant in case we now
10948 can reach with a shorter stub. */
10949 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10950 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10953 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10955 r2off = get_r2off (info, stub_entry);
10956 if (r2off == 0 && htab->opd_abi)
10958 htab->stub_error = TRUE;
10962 if (PPC_HA (r2off) != 0)
10967 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10969 /* If the branch offset if too big, use a ppc_stub_plt_branch.
10970 Do the same for -R objects without function descriptors. */
10971 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
10972 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
10975 struct ppc_branch_hash_entry *br_entry;
10977 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10978 stub_entry->root.string + 9,
10980 if (br_entry == NULL)
10982 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10983 stub_entry->root.string);
10984 htab->stub_error = TRUE;
10988 if (br_entry->iter != htab->stub_iteration)
10990 br_entry->iter = htab->stub_iteration;
10991 br_entry->offset = htab->brlt->size;
10992 htab->brlt->size += 8;
10994 if (htab->relbrlt != NULL)
10995 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10996 else if (info->emitrelocations)
10998 htab->brlt->reloc_count += 1;
10999 htab->brlt->flags |= SEC_RELOC;
11003 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11004 off = (br_entry->offset
11005 + htab->brlt->output_offset
11006 + htab->brlt->output_section->vma
11007 - elf_gp (htab->brlt->output_section->owner)
11008 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11010 if (info->emitrelocations)
11012 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11013 stub_entry->stub_sec->flags |= SEC_RELOC;
11016 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11019 if (PPC_HA (off) != 0)
11025 if (PPC_HA (off) != 0)
11028 if (PPC_HA (r2off) != 0)
11030 if (PPC_LO (r2off) != 0)
11034 else if (info->emitrelocations)
11036 stub_entry->stub_sec->reloc_count += 1;
11037 stub_entry->stub_sec->flags |= SEC_RELOC;
11041 stub_entry->stub_sec->size += size;
11045 /* Set up various things so that we can make a list of input sections
11046 for each output section included in the link. Returns -1 on error,
11047 0 when no stubs will be needed, and 1 on success. */
11050 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11053 int top_id, top_index, id;
11055 asection **input_list;
11057 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11062 /* Find the top input section id. */
11063 for (input_bfd = info->input_bfds, top_id = 3;
11065 input_bfd = input_bfd->link_next)
11067 for (section = input_bfd->sections;
11069 section = section->next)
11071 if (top_id < section->id)
11072 top_id = section->id;
11076 htab->top_id = top_id;
11077 amt = sizeof (struct map_stub) * (top_id + 1);
11078 htab->stub_group = bfd_zmalloc (amt);
11079 if (htab->stub_group == NULL)
11082 /* Set toc_off for com, und, abs and ind sections. */
11083 for (id = 0; id < 3; id++)
11084 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11086 /* We can't use output_bfd->section_count here to find the top output
11087 section index as some sections may have been removed, and
11088 strip_excluded_output_sections doesn't renumber the indices. */
11089 for (section = info->output_bfd->sections, top_index = 0;
11091 section = section->next)
11093 if (top_index < section->index)
11094 top_index = section->index;
11097 htab->top_index = top_index;
11098 amt = sizeof (asection *) * (top_index + 1);
11099 input_list = bfd_zmalloc (amt);
11100 htab->input_list = input_list;
11101 if (input_list == NULL)
11107 /* Set up for first pass at multitoc partitioning. */
11110 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11112 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11114 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11115 htab->toc_bfd = NULL;
11116 htab->toc_first_sec = NULL;
11119 /* The linker repeatedly calls this function for each TOC input section
11120 and linker generated GOT section. Group input bfds such that the toc
11121 within a group is less than 64k in size. */
11124 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11126 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11127 bfd_vma addr, off, limit;
11132 if (!htab->second_toc_pass)
11134 /* Keep track of the first .toc or .got section for this input bfd. */
11135 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11139 htab->toc_bfd = isec->owner;
11140 htab->toc_first_sec = isec;
11143 addr = isec->output_offset + isec->output_section->vma;
11144 off = addr - htab->toc_curr;
11145 limit = 0x80008000;
11146 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11148 if (off + isec->size > limit)
11150 addr = (htab->toc_first_sec->output_offset
11151 + htab->toc_first_sec->output_section->vma);
11152 htab->toc_curr = addr;
11155 /* toc_curr is the base address of this toc group. Set elf_gp
11156 for the input section to be the offset relative to the
11157 output toc base plus 0x8000. Making the input elf_gp an
11158 offset allows us to move the toc as a whole without
11159 recalculating input elf_gp. */
11160 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11161 off += TOC_BASE_OFF;
11163 /* Die if someone uses a linker script that doesn't keep input
11164 file .toc and .got together. */
11166 && elf_gp (isec->owner) != 0
11167 && elf_gp (isec->owner) != off)
11170 elf_gp (isec->owner) = off;
11174 /* During the second pass toc_first_sec points to the start of
11175 a toc group, and toc_curr is used to track the old elf_gp.
11176 We use toc_bfd to ensure we only look at each bfd once. */
11177 if (htab->toc_bfd == isec->owner)
11179 htab->toc_bfd = isec->owner;
11181 if (htab->toc_first_sec == NULL
11182 || htab->toc_curr != elf_gp (isec->owner))
11184 htab->toc_curr = elf_gp (isec->owner);
11185 htab->toc_first_sec = isec;
11187 addr = (htab->toc_first_sec->output_offset
11188 + htab->toc_first_sec->output_section->vma);
11189 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11190 elf_gp (isec->owner) = off;
11195 /* Called via elf_link_hash_traverse to merge GOT entries for global
11199 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11201 if (h->root.type == bfd_link_hash_indirect)
11204 merge_got_entries (&h->got.glist);
11209 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11213 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11215 struct got_entry *gent;
11217 if (h->root.type == bfd_link_hash_indirect)
11220 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11221 if (!gent->is_indirect)
11222 allocate_got (h, (struct bfd_link_info *) inf, gent);
11226 /* Called on the first multitoc pass after the last call to
11227 ppc64_elf_next_toc_section. This function removes duplicate GOT
11231 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11233 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11234 struct bfd *ibfd, *ibfd2;
11235 bfd_boolean done_something;
11237 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11239 if (!htab->do_multi_toc)
11242 /* Merge global sym got entries within a toc group. */
11243 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11245 /* And tlsld_got. */
11246 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11248 struct got_entry *ent, *ent2;
11250 if (!is_ppc64_elf (ibfd))
11253 ent = ppc64_tlsld_got (ibfd);
11254 if (!ent->is_indirect
11255 && ent->got.offset != (bfd_vma) -1)
11257 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
11259 if (!is_ppc64_elf (ibfd2))
11262 ent2 = ppc64_tlsld_got (ibfd2);
11263 if (!ent2->is_indirect
11264 && ent2->got.offset != (bfd_vma) -1
11265 && elf_gp (ibfd2) == elf_gp (ibfd))
11267 ent2->is_indirect = TRUE;
11268 ent2->got.ent = ent;
11274 /* Zap sizes of got sections. */
11275 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11276 htab->elf.irelplt->size -= htab->got_reli_size;
11277 htab->got_reli_size = 0;
11279 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11281 asection *got, *relgot;
11283 if (!is_ppc64_elf (ibfd))
11286 got = ppc64_elf_tdata (ibfd)->got;
11289 got->rawsize = got->size;
11291 relgot = ppc64_elf_tdata (ibfd)->relgot;
11292 relgot->rawsize = relgot->size;
11297 /* Now reallocate the got, local syms first. We don't need to
11298 allocate section contents again since we never increase size. */
11299 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11301 struct got_entry **lgot_ents;
11302 struct got_entry **end_lgot_ents;
11303 struct plt_entry **local_plt;
11304 struct plt_entry **end_local_plt;
11305 unsigned char *lgot_masks;
11306 bfd_size_type locsymcount;
11307 Elf_Internal_Shdr *symtab_hdr;
11310 if (!is_ppc64_elf (ibfd))
11313 lgot_ents = elf_local_got_ents (ibfd);
11317 symtab_hdr = &elf_symtab_hdr (ibfd);
11318 locsymcount = symtab_hdr->sh_info;
11319 end_lgot_ents = lgot_ents + locsymcount;
11320 local_plt = (struct plt_entry **) end_lgot_ents;
11321 end_local_plt = local_plt + locsymcount;
11322 lgot_masks = (unsigned char *) end_local_plt;
11323 s = ppc64_elf_tdata (ibfd)->got;
11324 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11326 struct got_entry *ent;
11328 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11330 unsigned int ent_size = 8;
11331 unsigned int rel_size = sizeof (Elf64_External_Rela);
11333 ent->got.offset = s->size;
11334 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11339 s->size += ent_size;
11340 if ((*lgot_masks & PLT_IFUNC) != 0)
11342 htab->elf.irelplt->size += rel_size;
11343 htab->got_reli_size += rel_size;
11345 else if (info->shared)
11347 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11348 srel->size += rel_size;
11354 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11356 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11358 struct got_entry *ent;
11360 if (!is_ppc64_elf (ibfd))
11363 ent = ppc64_tlsld_got (ibfd);
11364 if (!ent->is_indirect
11365 && ent->got.offset != (bfd_vma) -1)
11367 asection *s = ppc64_elf_tdata (ibfd)->got;
11368 ent->got.offset = s->size;
11372 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11373 srel->size += sizeof (Elf64_External_Rela);
11378 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11379 if (!done_something)
11380 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11384 if (!is_ppc64_elf (ibfd))
11387 got = ppc64_elf_tdata (ibfd)->got;
11390 done_something = got->rawsize != got->size;
11391 if (done_something)
11396 if (done_something)
11397 (*htab->params->layout_sections_again) ();
11399 /* Set up for second pass over toc sections to recalculate elf_gp
11400 on input sections. */
11401 htab->toc_bfd = NULL;
11402 htab->toc_first_sec = NULL;
11403 htab->second_toc_pass = TRUE;
11404 return done_something;
11407 /* Called after second pass of multitoc partitioning. */
11410 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11412 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11414 /* After the second pass, toc_curr tracks the TOC offset used
11415 for code sections below in ppc64_elf_next_input_section. */
11416 htab->toc_curr = TOC_BASE_OFF;
11419 /* No toc references were found in ISEC. If the code in ISEC makes no
11420 calls, then there's no need to use toc adjusting stubs when branching
11421 into ISEC. Actually, indirect calls from ISEC are OK as they will
11422 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11423 needed, and 2 if a cyclical call-graph was found but no other reason
11424 for a stub was detected. If called from the top level, a return of
11425 2 means the same as a return of 0. */
11428 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11432 /* Mark this section as checked. */
11433 isec->call_check_done = 1;
11435 /* We know none of our code bearing sections will need toc stubs. */
11436 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11439 if (isec->size == 0)
11442 if (isec->output_section == NULL)
11446 if (isec->reloc_count != 0)
11448 Elf_Internal_Rela *relstart, *rel;
11449 Elf_Internal_Sym *local_syms;
11450 struct ppc_link_hash_table *htab;
11452 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11453 info->keep_memory);
11454 if (relstart == NULL)
11457 /* Look for branches to outside of this section. */
11459 htab = ppc_hash_table (info);
11463 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11465 enum elf_ppc64_reloc_type r_type;
11466 unsigned long r_symndx;
11467 struct elf_link_hash_entry *h;
11468 struct ppc_link_hash_entry *eh;
11469 Elf_Internal_Sym *sym;
11471 struct _opd_sec_data *opd;
11475 r_type = ELF64_R_TYPE (rel->r_info);
11476 if (r_type != R_PPC64_REL24
11477 && r_type != R_PPC64_REL14
11478 && r_type != R_PPC64_REL14_BRTAKEN
11479 && r_type != R_PPC64_REL14_BRNTAKEN)
11482 r_symndx = ELF64_R_SYM (rel->r_info);
11483 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11490 /* Calls to dynamic lib functions go through a plt call stub
11492 eh = (struct ppc_link_hash_entry *) h;
11494 && (eh->elf.plt.plist != NULL
11496 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11502 if (sym_sec == NULL)
11503 /* Ignore other undefined symbols. */
11506 /* Assume branches to other sections not included in the
11507 link need stubs too, to cover -R and absolute syms. */
11508 if (sym_sec->output_section == NULL)
11515 sym_value = sym->st_value;
11518 if (h->root.type != bfd_link_hash_defined
11519 && h->root.type != bfd_link_hash_defweak)
11521 sym_value = h->root.u.def.value;
11523 sym_value += rel->r_addend;
11525 /* If this branch reloc uses an opd sym, find the code section. */
11526 opd = get_opd_info (sym_sec);
11529 if (h == NULL && opd->adjust != NULL)
11533 adjust = opd->adjust[sym->st_value / 8];
11535 /* Assume deleted functions won't ever be called. */
11537 sym_value += adjust;
11540 dest = opd_entry_value (sym_sec, sym_value,
11541 &sym_sec, NULL, FALSE);
11542 if (dest == (bfd_vma) -1)
11547 + sym_sec->output_offset
11548 + sym_sec->output_section->vma);
11550 /* Ignore branch to self. */
11551 if (sym_sec == isec)
11554 /* If the called function uses the toc, we need a stub. */
11555 if (sym_sec->has_toc_reloc
11556 || sym_sec->makes_toc_func_call)
11562 /* Assume any branch that needs a long branch stub might in fact
11563 need a plt_branch stub. A plt_branch stub uses r2. */
11564 else if (dest - (isec->output_offset
11565 + isec->output_section->vma
11566 + rel->r_offset) + (1 << 25)
11567 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11575 /* If calling back to a section in the process of being
11576 tested, we can't say for sure that no toc adjusting stubs
11577 are needed, so don't return zero. */
11578 else if (sym_sec->call_check_in_progress)
11581 /* Branches to another section that itself doesn't have any TOC
11582 references are OK. Recursively call ourselves to check. */
11583 else if (!sym_sec->call_check_done)
11587 /* Mark current section as indeterminate, so that other
11588 sections that call back to current won't be marked as
11590 isec->call_check_in_progress = 1;
11591 recur = toc_adjusting_stub_needed (info, sym_sec);
11592 isec->call_check_in_progress = 0;
11603 if (local_syms != NULL
11604 && (elf_symtab_hdr (isec->owner).contents
11605 != (unsigned char *) local_syms))
11607 if (elf_section_data (isec)->relocs != relstart)
11612 && isec->map_head.s != NULL
11613 && (strcmp (isec->output_section->name, ".init") == 0
11614 || strcmp (isec->output_section->name, ".fini") == 0))
11616 if (isec->map_head.s->has_toc_reloc
11617 || isec->map_head.s->makes_toc_func_call)
11619 else if (!isec->map_head.s->call_check_done)
11622 isec->call_check_in_progress = 1;
11623 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11624 isec->call_check_in_progress = 0;
11631 isec->makes_toc_func_call = 1;
11636 /* The linker repeatedly calls this function for each input section,
11637 in the order that input sections are linked into output sections.
11638 Build lists of input sections to determine groupings between which
11639 we may insert linker stubs. */
11642 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11644 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11649 if ((isec->output_section->flags & SEC_CODE) != 0
11650 && isec->output_section->index <= htab->top_index)
11652 asection **list = htab->input_list + isec->output_section->index;
11653 /* Steal the link_sec pointer for our list. */
11654 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11655 /* This happens to make the list in reverse order,
11656 which is what we want. */
11657 PREV_SEC (isec) = *list;
11661 if (htab->multi_toc_needed)
11663 /* Analyse sections that aren't already flagged as needing a
11664 valid toc pointer. Exclude .fixup for the linux kernel.
11665 .fixup contains branches, but only back to the function that
11666 hit an exception. */
11667 if (!(isec->has_toc_reloc
11668 || (isec->flags & SEC_CODE) == 0
11669 || strcmp (isec->name, ".fixup") == 0
11670 || isec->call_check_done))
11672 if (toc_adjusting_stub_needed (info, isec) < 0)
11675 /* Make all sections use the TOC assigned for this object file.
11676 This will be wrong for pasted sections; We fix that in
11677 check_pasted_section(). */
11678 if (elf_gp (isec->owner) != 0)
11679 htab->toc_curr = elf_gp (isec->owner);
11682 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11686 /* Check that all .init and .fini sections use the same toc, if they
11687 have toc relocs. */
11690 check_pasted_section (struct bfd_link_info *info, const char *name)
11692 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11696 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11697 bfd_vma toc_off = 0;
11700 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11701 if (i->has_toc_reloc)
11704 toc_off = htab->stub_group[i->id].toc_off;
11705 else if (toc_off != htab->stub_group[i->id].toc_off)
11710 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11711 if (i->makes_toc_func_call)
11713 toc_off = htab->stub_group[i->id].toc_off;
11717 /* Make sure the whole pasted function uses the same toc offset. */
11719 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11720 htab->stub_group[i->id].toc_off = toc_off;
11726 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11728 return (check_pasted_section (info, ".init")
11729 & check_pasted_section (info, ".fini"));
11732 /* See whether we can group stub sections together. Grouping stub
11733 sections may result in fewer stubs. More importantly, we need to
11734 put all .init* and .fini* stubs at the beginning of the .init or
11735 .fini output sections respectively, because glibc splits the
11736 _init and _fini functions into multiple parts. Putting a stub in
11737 the middle of a function is not a good idea. */
11740 group_sections (struct ppc_link_hash_table *htab,
11741 bfd_size_type stub_group_size,
11742 bfd_boolean stubs_always_before_branch)
11745 bfd_size_type stub14_group_size;
11746 bfd_boolean suppress_size_errors;
11748 suppress_size_errors = FALSE;
11749 stub14_group_size = stub_group_size;
11750 if (stub_group_size == 1)
11752 /* Default values. */
11753 if (stubs_always_before_branch)
11755 stub_group_size = 0x1e00000;
11756 stub14_group_size = 0x7800;
11760 stub_group_size = 0x1c00000;
11761 stub14_group_size = 0x7000;
11763 suppress_size_errors = TRUE;
11766 list = htab->input_list + htab->top_index;
11769 asection *tail = *list;
11770 while (tail != NULL)
11774 bfd_size_type total;
11775 bfd_boolean big_sec;
11779 total = tail->size;
11780 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11781 && ppc64_elf_section_data (tail)->has_14bit_branch
11782 ? stub14_group_size : stub_group_size);
11783 if (big_sec && !suppress_size_errors)
11784 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11785 tail->owner, tail);
11786 curr_toc = htab->stub_group[tail->id].toc_off;
11788 while ((prev = PREV_SEC (curr)) != NULL
11789 && ((total += curr->output_offset - prev->output_offset)
11790 < (ppc64_elf_section_data (prev) != NULL
11791 && ppc64_elf_section_data (prev)->has_14bit_branch
11792 ? stub14_group_size : stub_group_size))
11793 && htab->stub_group[prev->id].toc_off == curr_toc)
11796 /* OK, the size from the start of CURR to the end is less
11797 than stub_group_size and thus can be handled by one stub
11798 section. (or the tail section is itself larger than
11799 stub_group_size, in which case we may be toast.) We
11800 should really be keeping track of the total size of stubs
11801 added here, as stubs contribute to the final output
11802 section size. That's a little tricky, and this way will
11803 only break if stubs added make the total size more than
11804 2^25, ie. for the default stub_group_size, if stubs total
11805 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11808 prev = PREV_SEC (tail);
11809 /* Set up this stub group. */
11810 htab->stub_group[tail->id].link_sec = curr;
11812 while (tail != curr && (tail = prev) != NULL);
11814 /* But wait, there's more! Input sections up to stub_group_size
11815 bytes before the stub section can be handled by it too.
11816 Don't do this if we have a really large section after the
11817 stubs, as adding more stubs increases the chance that
11818 branches may not reach into the stub section. */
11819 if (!stubs_always_before_branch && !big_sec)
11822 while (prev != NULL
11823 && ((total += tail->output_offset - prev->output_offset)
11824 < (ppc64_elf_section_data (prev) != NULL
11825 && ppc64_elf_section_data (prev)->has_14bit_branch
11826 ? stub14_group_size : stub_group_size))
11827 && htab->stub_group[prev->id].toc_off == curr_toc)
11830 prev = PREV_SEC (tail);
11831 htab->stub_group[tail->id].link_sec = curr;
11837 while (list-- != htab->input_list);
11838 free (htab->input_list);
11842 static const unsigned char glink_eh_frame_cie[] =
11844 0, 0, 0, 16, /* length. */
11845 0, 0, 0, 0, /* id. */
11846 1, /* CIE version. */
11847 'z', 'R', 0, /* Augmentation string. */
11848 4, /* Code alignment. */
11849 0x78, /* Data alignment. */
11851 1, /* Augmentation size. */
11852 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11853 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11856 /* Stripping output sections is normally done before dynamic section
11857 symbols have been allocated. This function is called later, and
11858 handles cases like htab->brlt which is mapped to its own output
11862 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11864 if (isec->size == 0
11865 && isec->output_section->size == 0
11866 && !(isec->output_section->flags & SEC_KEEP)
11867 && !bfd_section_removed_from_list (info->output_bfd,
11868 isec->output_section)
11869 && elf_section_data (isec->output_section)->dynindx == 0)
11871 isec->output_section->flags |= SEC_EXCLUDE;
11872 bfd_section_list_remove (info->output_bfd, isec->output_section);
11873 info->output_bfd->section_count--;
11877 /* Determine and set the size of the stub section for a final link.
11879 The basic idea here is to examine all the relocations looking for
11880 PC-relative calls to a target that is unreachable with a "bl"
11884 ppc64_elf_size_stubs (struct bfd_link_info *info)
11886 bfd_size_type stub_group_size;
11887 bfd_boolean stubs_always_before_branch;
11888 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11893 if (htab->params->plt_thread_safe == -1 && !info->executable)
11894 htab->params->plt_thread_safe = 1;
11895 if (!htab->opd_abi)
11896 htab->params->plt_thread_safe = 0;
11897 else if (htab->params->plt_thread_safe == -1)
11899 static const char *const thread_starter[] =
11903 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11905 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11906 "mq_notify", "create_timer",
11910 "GOMP_parallel_start",
11911 "GOMP_parallel_loop_static_start",
11912 "GOMP_parallel_loop_dynamic_start",
11913 "GOMP_parallel_loop_guided_start",
11914 "GOMP_parallel_loop_runtime_start",
11915 "GOMP_parallel_sections_start",
11919 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11921 struct elf_link_hash_entry *h;
11922 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11923 FALSE, FALSE, TRUE);
11924 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11925 if (htab->params->plt_thread_safe)
11929 stubs_always_before_branch = htab->params->group_size < 0;
11930 if (htab->params->group_size < 0)
11931 stub_group_size = -htab->params->group_size;
11933 stub_group_size = htab->params->group_size;
11935 group_sections (htab, stub_group_size, stubs_always_before_branch);
11940 unsigned int bfd_indx;
11941 asection *stub_sec;
11943 htab->stub_iteration += 1;
11945 for (input_bfd = info->input_bfds, bfd_indx = 0;
11947 input_bfd = input_bfd->link_next, bfd_indx++)
11949 Elf_Internal_Shdr *symtab_hdr;
11951 Elf_Internal_Sym *local_syms = NULL;
11953 if (!is_ppc64_elf (input_bfd))
11956 /* We'll need the symbol table in a second. */
11957 symtab_hdr = &elf_symtab_hdr (input_bfd);
11958 if (symtab_hdr->sh_info == 0)
11961 /* Walk over each section attached to the input bfd. */
11962 for (section = input_bfd->sections;
11964 section = section->next)
11966 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11968 /* If there aren't any relocs, then there's nothing more
11970 if ((section->flags & SEC_RELOC) == 0
11971 || (section->flags & SEC_ALLOC) == 0
11972 || (section->flags & SEC_LOAD) == 0
11973 || (section->flags & SEC_CODE) == 0
11974 || section->reloc_count == 0)
11977 /* If this section is a link-once section that will be
11978 discarded, then don't create any stubs. */
11979 if (section->output_section == NULL
11980 || section->output_section->owner != info->output_bfd)
11983 /* Get the relocs. */
11985 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11986 info->keep_memory);
11987 if (internal_relocs == NULL)
11988 goto error_ret_free_local;
11990 /* Now examine each relocation. */
11991 irela = internal_relocs;
11992 irelaend = irela + section->reloc_count;
11993 for (; irela < irelaend; irela++)
11995 enum elf_ppc64_reloc_type r_type;
11996 unsigned int r_indx;
11997 enum ppc_stub_type stub_type;
11998 struct ppc_stub_hash_entry *stub_entry;
11999 asection *sym_sec, *code_sec;
12000 bfd_vma sym_value, code_value;
12001 bfd_vma destination;
12002 unsigned long local_off;
12003 bfd_boolean ok_dest;
12004 struct ppc_link_hash_entry *hash;
12005 struct ppc_link_hash_entry *fdh;
12006 struct elf_link_hash_entry *h;
12007 Elf_Internal_Sym *sym;
12009 const asection *id_sec;
12010 struct _opd_sec_data *opd;
12011 struct plt_entry *plt_ent;
12013 r_type = ELF64_R_TYPE (irela->r_info);
12014 r_indx = ELF64_R_SYM (irela->r_info);
12016 if (r_type >= R_PPC64_max)
12018 bfd_set_error (bfd_error_bad_value);
12019 goto error_ret_free_internal;
12022 /* Only look for stubs on branch instructions. */
12023 if (r_type != R_PPC64_REL24
12024 && r_type != R_PPC64_REL14
12025 && r_type != R_PPC64_REL14_BRTAKEN
12026 && r_type != R_PPC64_REL14_BRNTAKEN)
12029 /* Now determine the call target, its name, value,
12031 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12032 r_indx, input_bfd))
12033 goto error_ret_free_internal;
12034 hash = (struct ppc_link_hash_entry *) h;
12041 sym_value = sym->st_value;
12044 else if (hash->elf.root.type == bfd_link_hash_defined
12045 || hash->elf.root.type == bfd_link_hash_defweak)
12047 sym_value = hash->elf.root.u.def.value;
12048 if (sym_sec->output_section != NULL)
12051 else if (hash->elf.root.type == bfd_link_hash_undefweak
12052 || hash->elf.root.type == bfd_link_hash_undefined)
12054 /* Recognise an old ABI func code entry sym, and
12055 use the func descriptor sym instead if it is
12057 if (hash->elf.root.root.string[0] == '.'
12058 && (fdh = lookup_fdh (hash, htab)) != NULL)
12060 if (fdh->elf.root.type == bfd_link_hash_defined
12061 || fdh->elf.root.type == bfd_link_hash_defweak)
12063 sym_sec = fdh->elf.root.u.def.section;
12064 sym_value = fdh->elf.root.u.def.value;
12065 if (sym_sec->output_section != NULL)
12074 bfd_set_error (bfd_error_bad_value);
12075 goto error_ret_free_internal;
12082 sym_value += irela->r_addend;
12083 destination = (sym_value
12084 + sym_sec->output_offset
12085 + sym_sec->output_section->vma);
12086 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12091 code_sec = sym_sec;
12092 code_value = sym_value;
12093 opd = get_opd_info (sym_sec);
12098 if (hash == NULL && opd->adjust != NULL)
12100 long adjust = opd->adjust[sym_value / 8];
12103 code_value += adjust;
12104 sym_value += adjust;
12106 dest = opd_entry_value (sym_sec, sym_value,
12107 &code_sec, &code_value, FALSE);
12108 if (dest != (bfd_vma) -1)
12110 destination = dest;
12113 /* Fixup old ABI sym to point at code
12115 hash->elf.root.type = bfd_link_hash_defweak;
12116 hash->elf.root.u.def.section = code_sec;
12117 hash->elf.root.u.def.value = code_value;
12122 /* Determine what (if any) linker stub is needed. */
12124 stub_type = ppc_type_of_stub (section, irela, &hash,
12125 &plt_ent, destination,
12128 if (stub_type != ppc_stub_plt_call)
12130 /* Check whether we need a TOC adjusting stub.
12131 Since the linker pastes together pieces from
12132 different object files when creating the
12133 _init and _fini functions, it may be that a
12134 call to what looks like a local sym is in
12135 fact a call needing a TOC adjustment. */
12136 if (code_sec != NULL
12137 && code_sec->output_section != NULL
12138 && (htab->stub_group[code_sec->id].toc_off
12139 != htab->stub_group[section->id].toc_off)
12140 && (code_sec->has_toc_reloc
12141 || code_sec->makes_toc_func_call))
12142 stub_type = ppc_stub_long_branch_r2off;
12145 if (stub_type == ppc_stub_none)
12148 /* __tls_get_addr calls might be eliminated. */
12149 if (stub_type != ppc_stub_plt_call
12151 && (hash == htab->tls_get_addr
12152 || hash == htab->tls_get_addr_fd)
12153 && section->has_tls_reloc
12154 && irela != internal_relocs)
12156 /* Get tls info. */
12157 unsigned char *tls_mask;
12159 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12160 irela - 1, input_bfd))
12161 goto error_ret_free_internal;
12162 if (*tls_mask != 0)
12166 if (stub_type == ppc_stub_plt_call
12167 && irela + 1 < irelaend
12168 && irela[1].r_offset == irela->r_offset + 4
12169 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12171 if (!tocsave_find (htab, INSERT,
12172 &local_syms, irela + 1, input_bfd))
12173 goto error_ret_free_internal;
12175 else if (stub_type == ppc_stub_plt_call)
12176 stub_type = ppc_stub_plt_call_r2save;
12178 /* Support for grouping stub sections. */
12179 id_sec = htab->stub_group[section->id].link_sec;
12181 /* Get the name of this stub. */
12182 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12184 goto error_ret_free_internal;
12186 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12187 stub_name, FALSE, FALSE);
12188 if (stub_entry != NULL)
12190 /* The proper stub has already been created. */
12192 if (stub_type == ppc_stub_plt_call_r2save)
12193 stub_entry->stub_type = stub_type;
12197 stub_entry = ppc_add_stub (stub_name, section, info);
12198 if (stub_entry == NULL)
12201 error_ret_free_internal:
12202 if (elf_section_data (section)->relocs == NULL)
12203 free (internal_relocs);
12204 error_ret_free_local:
12205 if (local_syms != NULL
12206 && (symtab_hdr->contents
12207 != (unsigned char *) local_syms))
12212 stub_entry->stub_type = stub_type;
12213 if (stub_type != ppc_stub_plt_call
12214 && stub_type != ppc_stub_plt_call_r2save)
12216 stub_entry->target_value = code_value;
12217 stub_entry->target_section = code_sec;
12221 stub_entry->target_value = sym_value;
12222 stub_entry->target_section = sym_sec;
12224 stub_entry->h = hash;
12225 stub_entry->plt_ent = plt_ent;
12226 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12228 if (stub_entry->h != NULL)
12229 htab->stub_globals += 1;
12232 /* We're done with the internal relocs, free them. */
12233 if (elf_section_data (section)->relocs != internal_relocs)
12234 free (internal_relocs);
12237 if (local_syms != NULL
12238 && symtab_hdr->contents != (unsigned char *) local_syms)
12240 if (!info->keep_memory)
12243 symtab_hdr->contents = (unsigned char *) local_syms;
12247 /* We may have added some stubs. Find out the new size of the
12249 for (stub_sec = htab->params->stub_bfd->sections;
12251 stub_sec = stub_sec->next)
12252 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12254 stub_sec->rawsize = stub_sec->size;
12255 stub_sec->size = 0;
12256 stub_sec->reloc_count = 0;
12257 stub_sec->flags &= ~SEC_RELOC;
12260 htab->brlt->size = 0;
12261 htab->brlt->reloc_count = 0;
12262 htab->brlt->flags &= ~SEC_RELOC;
12263 if (htab->relbrlt != NULL)
12264 htab->relbrlt->size = 0;
12266 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12268 if (info->emitrelocations
12269 && htab->glink != NULL && htab->glink->size != 0)
12271 htab->glink->reloc_count = 1;
12272 htab->glink->flags |= SEC_RELOC;
12275 if (htab->glink_eh_frame != NULL
12276 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12277 && htab->glink_eh_frame->output_section->size != 0)
12279 size_t size = 0, align;
12281 for (stub_sec = htab->params->stub_bfd->sections;
12283 stub_sec = stub_sec->next)
12284 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12286 if (htab->glink != NULL && htab->glink->size != 0)
12289 size += sizeof (glink_eh_frame_cie);
12291 align <<= htab->glink_eh_frame->output_section->alignment_power;
12293 size = (size + align) & ~align;
12294 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12295 htab->glink_eh_frame->size = size;
12298 if (htab->params->plt_stub_align != 0)
12299 for (stub_sec = htab->params->stub_bfd->sections;
12301 stub_sec = stub_sec->next)
12302 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12303 stub_sec->size = ((stub_sec->size
12304 + (1 << htab->params->plt_stub_align) - 1)
12305 & (-1 << htab->params->plt_stub_align));
12307 for (stub_sec = htab->params->stub_bfd->sections;
12309 stub_sec = stub_sec->next)
12310 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12311 && stub_sec->rawsize != stub_sec->size)
12314 /* Exit from this loop when no stubs have been added, and no stubs
12315 have changed size. */
12316 if (stub_sec == NULL
12317 && (htab->glink_eh_frame == NULL
12318 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12321 /* Ask the linker to do its stuff. */
12322 (*htab->params->layout_sections_again) ();
12325 maybe_strip_output (info, htab->brlt);
12326 if (htab->glink_eh_frame != NULL)
12327 maybe_strip_output (info, htab->glink_eh_frame);
12332 /* Called after we have determined section placement. If sections
12333 move, we'll be called again. Provide a value for TOCstart. */
12336 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12341 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12342 order. The TOC starts where the first of these sections starts. */
12343 s = bfd_get_section_by_name (obfd, ".got");
12344 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12345 s = bfd_get_section_by_name (obfd, ".toc");
12346 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12347 s = bfd_get_section_by_name (obfd, ".tocbss");
12348 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12349 s = bfd_get_section_by_name (obfd, ".plt");
12350 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12352 /* This may happen for
12353 o references to TOC base (SYM@toc / TOC[tc0]) without a
12355 o bad linker script
12356 o --gc-sections and empty TOC sections
12358 FIXME: Warn user? */
12360 /* Look for a likely section. We probably won't even be
12362 for (s = obfd->sections; s != NULL; s = s->next)
12363 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12365 == (SEC_ALLOC | SEC_SMALL_DATA))
12368 for (s = obfd->sections; s != NULL; s = s->next)
12369 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12370 == (SEC_ALLOC | SEC_SMALL_DATA))
12373 for (s = obfd->sections; s != NULL; s = s->next)
12374 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12378 for (s = obfd->sections; s != NULL; s = s->next)
12379 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12385 TOCstart = s->output_section->vma + s->output_offset;
12387 _bfd_set_gp_value (obfd, TOCstart);
12389 if (info != NULL && s != NULL && is_ppc64_elf (obfd))
12391 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12394 && htab->elf.hgot != NULL)
12396 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12397 htab->elf.hgot->root.u.def.section = s;
12403 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12404 write out any global entry stubs. */
12407 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12409 struct bfd_link_info *info;
12410 struct ppc_link_hash_table *htab;
12411 struct plt_entry *pent;
12414 if (h->root.type == bfd_link_hash_indirect)
12417 if (!h->pointer_equality_needed)
12420 if (h->def_regular)
12424 htab = ppc_hash_table (info);
12429 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12430 if (pent->plt.offset != (bfd_vma) -1
12431 && pent->addend == 0)
12437 p = s->contents + h->root.u.def.value;
12438 plt = htab->elf.splt;
12439 if (!htab->elf.dynamic_sections_created
12440 || h->dynindx == -1)
12441 plt = htab->elf.iplt;
12442 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12443 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12445 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12447 info->callbacks->einfo
12448 (_("%P: linkage table error against `%T'\n"),
12449 h->root.root.string);
12450 bfd_set_error (bfd_error_bad_value);
12451 htab->stub_error = TRUE;
12454 if (PPC_HA (off) != 0)
12456 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12459 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12461 bfd_put_32 (s->owner, MTCTR_R12, p);
12463 bfd_put_32 (s->owner, BCTR, p);
12469 /* Build all the stubs associated with the current output file.
12470 The stubs are kept in a hash table attached to the main linker
12471 hash table. This function is called via gldelf64ppc_finish. */
12474 ppc64_elf_build_stubs (struct bfd_link_info *info,
12477 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12478 asection *stub_sec;
12480 int stub_sec_count = 0;
12485 /* Allocate memory to hold the linker stubs. */
12486 for (stub_sec = htab->params->stub_bfd->sections;
12488 stub_sec = stub_sec->next)
12489 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12490 && stub_sec->size != 0)
12492 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12493 if (stub_sec->contents == NULL)
12495 /* We want to check that built size is the same as calculated
12496 size. rawsize is a convenient location to use. */
12497 stub_sec->rawsize = stub_sec->size;
12498 stub_sec->size = 0;
12501 if (htab->glink != NULL && htab->glink->size != 0)
12506 /* Build the .glink plt call stub. */
12507 if (htab->params->emit_stub_syms)
12509 struct elf_link_hash_entry *h;
12510 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12511 TRUE, FALSE, FALSE);
12514 if (h->root.type == bfd_link_hash_new)
12516 h->root.type = bfd_link_hash_defined;
12517 h->root.u.def.section = htab->glink;
12518 h->root.u.def.value = 8;
12519 h->ref_regular = 1;
12520 h->def_regular = 1;
12521 h->ref_regular_nonweak = 1;
12522 h->forced_local = 1;
12526 plt0 = (htab->elf.splt->output_section->vma
12527 + htab->elf.splt->output_offset
12529 if (info->emitrelocations)
12531 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12534 r->r_offset = (htab->glink->output_offset
12535 + htab->glink->output_section->vma);
12536 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12537 r->r_addend = plt0;
12539 p = htab->glink->contents;
12540 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12541 bfd_put_64 (htab->glink->owner, plt0, p);
12545 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12547 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12549 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12551 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12553 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12555 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12557 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12559 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12561 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12563 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12568 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12570 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12572 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12574 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12576 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12578 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12580 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12582 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12584 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12586 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12588 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12590 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12593 bfd_put_32 (htab->glink->owner, BCTR, p);
12595 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12597 bfd_put_32 (htab->glink->owner, NOP, p);
12601 /* Build the .glink lazy link call stubs. */
12603 while (p < htab->glink->contents + htab->glink->rawsize)
12609 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12614 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12616 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12621 bfd_put_32 (htab->glink->owner,
12622 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12627 /* Build .glink global entry stubs. */
12628 if (htab->glink->size > htab->glink->rawsize)
12629 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12632 if (htab->brlt->size != 0)
12634 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12636 if (htab->brlt->contents == NULL)
12639 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12641 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12642 htab->relbrlt->size);
12643 if (htab->relbrlt->contents == NULL)
12647 if (htab->glink_eh_frame != NULL
12648 && htab->glink_eh_frame->size != 0)
12651 bfd_byte *last_fde;
12652 size_t last_fde_len, size, align, pad;
12654 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12657 htab->glink_eh_frame->contents = p;
12660 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12662 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12663 /* CIE length (rewrite in case little-endian). */
12664 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12665 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12666 p += sizeof (glink_eh_frame_cie);
12668 for (stub_sec = htab->params->stub_bfd->sections;
12670 stub_sec = stub_sec->next)
12671 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12676 bfd_put_32 (htab->elf.dynobj, 16, p);
12679 val = p - htab->glink_eh_frame->contents;
12680 bfd_put_32 (htab->elf.dynobj, val, p);
12682 /* Offset to stub section. */
12683 val = (stub_sec->output_section->vma
12684 + stub_sec->output_offset);
12685 val -= (htab->glink_eh_frame->output_section->vma
12686 + htab->glink_eh_frame->output_offset);
12687 val -= p - htab->glink_eh_frame->contents;
12688 if (val + 0x80000000 > 0xffffffff)
12690 info->callbacks->einfo
12691 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12695 bfd_put_32 (htab->elf.dynobj, val, p);
12697 /* stub section size. */
12698 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12700 /* Augmentation. */
12705 if (htab->glink != NULL && htab->glink->size != 0)
12710 bfd_put_32 (htab->elf.dynobj, 20, p);
12713 val = p - htab->glink_eh_frame->contents;
12714 bfd_put_32 (htab->elf.dynobj, val, p);
12716 /* Offset to .glink. */
12717 val = (htab->glink->output_section->vma
12718 + htab->glink->output_offset
12720 val -= (htab->glink_eh_frame->output_section->vma
12721 + htab->glink_eh_frame->output_offset);
12722 val -= p - htab->glink_eh_frame->contents;
12723 if (val + 0x80000000 > 0xffffffff)
12725 info->callbacks->einfo
12726 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12727 htab->glink->name);
12730 bfd_put_32 (htab->elf.dynobj, val, p);
12733 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12735 /* Augmentation. */
12738 *p++ = DW_CFA_advance_loc + 1;
12739 *p++ = DW_CFA_register;
12742 *p++ = DW_CFA_advance_loc + 4;
12743 *p++ = DW_CFA_restore_extended;
12746 /* Subsume any padding into the last FDE if user .eh_frame
12747 sections are aligned more than glink_eh_frame. Otherwise any
12748 zero padding will be seen as a terminator. */
12749 size = p - htab->glink_eh_frame->contents;
12751 align <<= htab->glink_eh_frame->output_section->alignment_power;
12753 pad = ((size + align) & ~align) - size;
12754 htab->glink_eh_frame->size = size + pad;
12755 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12758 /* Build the stubs as directed by the stub hash table. */
12759 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12761 if (htab->relbrlt != NULL)
12762 htab->relbrlt->reloc_count = 0;
12764 if (htab->params->plt_stub_align != 0)
12765 for (stub_sec = htab->params->stub_bfd->sections;
12767 stub_sec = stub_sec->next)
12768 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12769 stub_sec->size = ((stub_sec->size
12770 + (1 << htab->params->plt_stub_align) - 1)
12771 & (-1 << htab->params->plt_stub_align));
12773 for (stub_sec = htab->params->stub_bfd->sections;
12775 stub_sec = stub_sec->next)
12776 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12778 stub_sec_count += 1;
12779 if (stub_sec->rawsize != stub_sec->size)
12783 if (stub_sec != NULL
12784 || (htab->glink_eh_frame != NULL
12785 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12787 htab->stub_error = TRUE;
12788 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12791 if (htab->stub_error)
12796 *stats = bfd_malloc (500);
12797 if (*stats == NULL)
12800 sprintf (*stats, _("linker stubs in %u group%s\n"
12802 " toc adjust %lu\n"
12803 " long branch %lu\n"
12804 " long toc adj %lu\n"
12806 " plt call toc %lu"),
12808 stub_sec_count == 1 ? "" : "s",
12809 htab->stub_count[ppc_stub_long_branch - 1],
12810 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12811 htab->stub_count[ppc_stub_plt_branch - 1],
12812 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12813 htab->stub_count[ppc_stub_plt_call - 1],
12814 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12819 /* This function undoes the changes made by add_symbol_adjust. */
12822 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12824 struct ppc_link_hash_entry *eh;
12826 if (h->root.type == bfd_link_hash_indirect)
12829 eh = (struct ppc_link_hash_entry *) h;
12830 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12833 eh->elf.root.type = bfd_link_hash_undefined;
12838 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12840 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12843 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12846 /* What to do when ld finds relocations against symbols defined in
12847 discarded sections. */
12849 static unsigned int
12850 ppc64_elf_action_discarded (asection *sec)
12852 if (strcmp (".opd", sec->name) == 0)
12855 if (strcmp (".toc", sec->name) == 0)
12858 if (strcmp (".toc1", sec->name) == 0)
12861 return _bfd_elf_default_action_discarded (sec);
12864 /* The RELOCATE_SECTION function is called by the ELF backend linker
12865 to handle the relocations for a section.
12867 The relocs are always passed as Rela structures; if the section
12868 actually uses Rel structures, the r_addend field will always be
12871 This function is responsible for adjust the section contents as
12872 necessary, and (if using Rela relocs and generating a
12873 relocatable output file) adjusting the reloc addend as
12876 This function does not have to worry about setting the reloc
12877 address or the reloc symbol index.
12879 LOCAL_SYMS is a pointer to the swapped in local symbols.
12881 LOCAL_SECTIONS is an array giving the section in the input file
12882 corresponding to the st_shndx field of each local symbol.
12884 The global hash table entry for the global symbols can be found
12885 via elf_sym_hashes (input_bfd).
12887 When generating relocatable output, this function must handle
12888 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12889 going to be the section symbol corresponding to the output
12890 section, which means that the addend must be adjusted
12894 ppc64_elf_relocate_section (bfd *output_bfd,
12895 struct bfd_link_info *info,
12897 asection *input_section,
12898 bfd_byte *contents,
12899 Elf_Internal_Rela *relocs,
12900 Elf_Internal_Sym *local_syms,
12901 asection **local_sections)
12903 struct ppc_link_hash_table *htab;
12904 Elf_Internal_Shdr *symtab_hdr;
12905 struct elf_link_hash_entry **sym_hashes;
12906 Elf_Internal_Rela *rel;
12907 Elf_Internal_Rela *relend;
12908 Elf_Internal_Rela outrel;
12910 struct got_entry **local_got_ents;
12912 bfd_boolean ret = TRUE;
12913 bfd_boolean is_opd;
12914 /* Assume 'at' branch hints. */
12915 bfd_boolean is_isa_v2 = TRUE;
12916 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12918 /* Initialize howto table if needed. */
12919 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12922 htab = ppc_hash_table (info);
12926 /* Don't relocate stub sections. */
12927 if (input_section->owner == htab->params->stub_bfd)
12930 BFD_ASSERT (is_ppc64_elf (input_bfd));
12932 local_got_ents = elf_local_got_ents (input_bfd);
12933 TOCstart = elf_gp (output_bfd);
12934 symtab_hdr = &elf_symtab_hdr (input_bfd);
12935 sym_hashes = elf_sym_hashes (input_bfd);
12936 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12939 relend = relocs + input_section->reloc_count;
12940 for (; rel < relend; rel++)
12942 enum elf_ppc64_reloc_type r_type;
12944 bfd_reloc_status_type r;
12945 Elf_Internal_Sym *sym;
12947 struct elf_link_hash_entry *h_elf;
12948 struct ppc_link_hash_entry *h;
12949 struct ppc_link_hash_entry *fdh;
12950 const char *sym_name;
12951 unsigned long r_symndx, toc_symndx;
12952 bfd_vma toc_addend;
12953 unsigned char tls_mask, tls_gd, tls_type;
12954 unsigned char sym_type;
12955 bfd_vma relocation;
12956 bfd_boolean unresolved_reloc;
12957 bfd_boolean warned;
12958 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
12961 struct ppc_stub_hash_entry *stub_entry;
12962 bfd_vma max_br_offset;
12964 const Elf_Internal_Rela orig_rel = *rel;
12965 reloc_howto_type *howto;
12966 struct reloc_howto_struct alt_howto;
12968 r_type = ELF64_R_TYPE (rel->r_info);
12969 r_symndx = ELF64_R_SYM (rel->r_info);
12971 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12972 symbol of the previous ADDR64 reloc. The symbol gives us the
12973 proper TOC base to use. */
12974 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12976 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12978 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12984 unresolved_reloc = FALSE;
12987 if (r_symndx < symtab_hdr->sh_info)
12989 /* It's a local symbol. */
12990 struct _opd_sec_data *opd;
12992 sym = local_syms + r_symndx;
12993 sec = local_sections[r_symndx];
12994 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12995 sym_type = ELF64_ST_TYPE (sym->st_info);
12996 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12997 opd = get_opd_info (sec);
12998 if (opd != NULL && opd->adjust != NULL)
13000 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
13005 /* If this is a relocation against the opd section sym
13006 and we have edited .opd, adjust the reloc addend so
13007 that ld -r and ld --emit-relocs output is correct.
13008 If it is a reloc against some other .opd symbol,
13009 then the symbol value will be adjusted later. */
13010 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13011 rel->r_addend += adjust;
13013 relocation += adjust;
13019 bfd_boolean ignored;
13021 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13022 r_symndx, symtab_hdr, sym_hashes,
13023 h_elf, sec, relocation,
13024 unresolved_reloc, warned, ignored);
13025 sym_name = h_elf->root.root.string;
13026 sym_type = h_elf->type;
13028 && sec->owner == output_bfd
13029 && strcmp (sec->name, ".opd") == 0)
13031 /* This is a symbol defined in a linker script. All
13032 such are defined in output sections, even those
13033 defined by simple assignment from a symbol defined in
13034 an input section. Transfer the symbol to an
13035 appropriate input .opd section, so that a branch to
13036 this symbol will be mapped to the location specified
13037 by the opd entry. */
13038 struct bfd_link_order *lo;
13039 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13040 if (lo->type == bfd_indirect_link_order)
13042 asection *isec = lo->u.indirect.section;
13043 if (h_elf->root.u.def.value >= isec->output_offset
13044 && h_elf->root.u.def.value < (isec->output_offset
13047 h_elf->root.u.def.value -= isec->output_offset;
13048 h_elf->root.u.def.section = isec;
13055 h = (struct ppc_link_hash_entry *) h_elf;
13057 if (sec != NULL && discarded_section (sec))
13058 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13060 ppc64_elf_howto_table[r_type], 0,
13063 if (info->relocatable)
13066 if (h != NULL && &h->elf == htab->elf.hgot)
13068 relocation = (TOCstart
13069 + htab->stub_group[input_section->id].toc_off);
13070 sec = bfd_abs_section_ptr;
13071 unresolved_reloc = FALSE;
13074 /* TLS optimizations. Replace instruction sequences and relocs
13075 based on information we collected in tls_optimize. We edit
13076 RELOCS so that --emit-relocs will output something sensible
13077 for the final instruction stream. */
13082 tls_mask = h->tls_mask;
13083 else if (local_got_ents != NULL)
13085 struct plt_entry **local_plt = (struct plt_entry **)
13086 (local_got_ents + symtab_hdr->sh_info);
13087 unsigned char *lgot_masks = (unsigned char *)
13088 (local_plt + symtab_hdr->sh_info);
13089 tls_mask = lgot_masks[r_symndx];
13092 && (r_type == R_PPC64_TLS
13093 || r_type == R_PPC64_TLSGD
13094 || r_type == R_PPC64_TLSLD))
13096 /* Check for toc tls entries. */
13097 unsigned char *toc_tls;
13099 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13100 &local_syms, rel, input_bfd))
13104 tls_mask = *toc_tls;
13107 /* Check that tls relocs are used with tls syms, and non-tls
13108 relocs are used with non-tls syms. */
13109 if (r_symndx != STN_UNDEF
13110 && r_type != R_PPC64_NONE
13112 || h->elf.root.type == bfd_link_hash_defined
13113 || h->elf.root.type == bfd_link_hash_defweak)
13114 && (IS_PPC64_TLS_RELOC (r_type)
13115 != (sym_type == STT_TLS
13116 || (sym_type == STT_SECTION
13117 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13120 && (r_type == R_PPC64_TLS
13121 || r_type == R_PPC64_TLSGD
13122 || r_type == R_PPC64_TLSLD))
13123 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13126 info->callbacks->einfo
13127 (!IS_PPC64_TLS_RELOC (r_type)
13128 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13129 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13130 input_bfd, input_section, rel->r_offset,
13131 ppc64_elf_howto_table[r_type]->name,
13135 /* Ensure reloc mapping code below stays sane. */
13136 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13137 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13138 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13139 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13140 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13141 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13142 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13143 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13144 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13145 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13153 case R_PPC64_LO_DS_OPT:
13154 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13155 if ((insn & (0x3f << 26)) != 58u << 26)
13157 insn += (14u << 26) - (58u << 26);
13158 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13159 r_type = R_PPC64_TOC16_LO;
13160 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13163 case R_PPC64_TOC16:
13164 case R_PPC64_TOC16_LO:
13165 case R_PPC64_TOC16_DS:
13166 case R_PPC64_TOC16_LO_DS:
13168 /* Check for toc tls entries. */
13169 unsigned char *toc_tls;
13172 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13173 &local_syms, rel, input_bfd);
13179 tls_mask = *toc_tls;
13180 if (r_type == R_PPC64_TOC16_DS
13181 || r_type == R_PPC64_TOC16_LO_DS)
13184 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13189 /* If we found a GD reloc pair, then we might be
13190 doing a GD->IE transition. */
13193 tls_gd = TLS_TPRELGD;
13194 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13197 else if (retval == 3)
13199 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13207 case R_PPC64_GOT_TPREL16_HI:
13208 case R_PPC64_GOT_TPREL16_HA:
13210 && (tls_mask & TLS_TPREL) == 0)
13212 rel->r_offset -= d_offset;
13213 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13214 r_type = R_PPC64_NONE;
13215 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13219 case R_PPC64_GOT_TPREL16_DS:
13220 case R_PPC64_GOT_TPREL16_LO_DS:
13222 && (tls_mask & TLS_TPREL) == 0)
13225 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13227 insn |= 0x3c0d0000; /* addis 0,13,0 */
13228 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13229 r_type = R_PPC64_TPREL16_HA;
13230 if (toc_symndx != 0)
13232 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13233 rel->r_addend = toc_addend;
13234 /* We changed the symbol. Start over in order to
13235 get h, sym, sec etc. right. */
13240 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13246 && (tls_mask & TLS_TPREL) == 0)
13248 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13249 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13252 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13253 /* Was PPC64_TLS which sits on insn boundary, now
13254 PPC64_TPREL16_LO which is at low-order half-word. */
13255 rel->r_offset += d_offset;
13256 r_type = R_PPC64_TPREL16_LO;
13257 if (toc_symndx != 0)
13259 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13260 rel->r_addend = toc_addend;
13261 /* We changed the symbol. Start over in order to
13262 get h, sym, sec etc. right. */
13267 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13271 case R_PPC64_GOT_TLSGD16_HI:
13272 case R_PPC64_GOT_TLSGD16_HA:
13273 tls_gd = TLS_TPRELGD;
13274 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13278 case R_PPC64_GOT_TLSLD16_HI:
13279 case R_PPC64_GOT_TLSLD16_HA:
13280 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13283 if ((tls_mask & tls_gd) != 0)
13284 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13285 + R_PPC64_GOT_TPREL16_DS);
13288 rel->r_offset -= d_offset;
13289 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13290 r_type = R_PPC64_NONE;
13292 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13296 case R_PPC64_GOT_TLSGD16:
13297 case R_PPC64_GOT_TLSGD16_LO:
13298 tls_gd = TLS_TPRELGD;
13299 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13303 case R_PPC64_GOT_TLSLD16:
13304 case R_PPC64_GOT_TLSLD16_LO:
13305 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13307 unsigned int insn1, insn2, insn3;
13311 offset = (bfd_vma) -1;
13312 /* If not using the newer R_PPC64_TLSGD/LD to mark
13313 __tls_get_addr calls, we must trust that the call
13314 stays with its arg setup insns, ie. that the next
13315 reloc is the __tls_get_addr call associated with
13316 the current reloc. Edit both insns. */
13317 if (input_section->has_tls_get_addr_call
13318 && rel + 1 < relend
13319 && branch_reloc_hash_match (input_bfd, rel + 1,
13320 htab->tls_get_addr,
13321 htab->tls_get_addr_fd))
13322 offset = rel[1].r_offset;
13323 if ((tls_mask & tls_gd) != 0)
13326 insn1 = bfd_get_32 (output_bfd,
13327 contents + rel->r_offset - d_offset);
13328 insn1 &= (1 << 26) - (1 << 2);
13329 insn1 |= 58 << 26; /* ld */
13330 insn2 = 0x7c636a14; /* add 3,3,13 */
13331 if (offset != (bfd_vma) -1)
13332 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13333 if ((tls_mask & TLS_EXPLICIT) == 0)
13334 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13335 + R_PPC64_GOT_TPREL16_DS);
13337 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13338 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13343 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13344 insn2 = 0x38630000; /* addi 3,3,0 */
13347 /* Was an LD reloc. */
13349 sec = local_sections[toc_symndx];
13351 r_symndx < symtab_hdr->sh_info;
13353 if (local_sections[r_symndx] == sec)
13355 if (r_symndx >= symtab_hdr->sh_info)
13356 r_symndx = STN_UNDEF;
13357 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13358 if (r_symndx != STN_UNDEF)
13359 rel->r_addend -= (local_syms[r_symndx].st_value
13360 + sec->output_offset
13361 + sec->output_section->vma);
13363 else if (toc_symndx != 0)
13365 r_symndx = toc_symndx;
13366 rel->r_addend = toc_addend;
13368 r_type = R_PPC64_TPREL16_HA;
13369 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13370 if (offset != (bfd_vma) -1)
13372 rel[1].r_info = ELF64_R_INFO (r_symndx,
13373 R_PPC64_TPREL16_LO);
13374 rel[1].r_offset = offset + d_offset;
13375 rel[1].r_addend = rel->r_addend;
13378 bfd_put_32 (output_bfd, insn1,
13379 contents + rel->r_offset - d_offset);
13380 if (offset != (bfd_vma) -1)
13382 insn3 = bfd_get_32 (output_bfd,
13383 contents + offset + 4);
13385 || insn3 == CROR_151515 || insn3 == CROR_313131)
13387 rel[1].r_offset += 4;
13388 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13391 bfd_put_32 (output_bfd, insn2, contents + offset);
13393 if ((tls_mask & tls_gd) == 0
13394 && (tls_gd == 0 || toc_symndx != 0))
13396 /* We changed the symbol. Start over in order
13397 to get h, sym, sec etc. right. */
13404 case R_PPC64_TLSGD:
13405 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13407 unsigned int insn2, insn3;
13408 bfd_vma offset = rel->r_offset;
13410 if ((tls_mask & TLS_TPRELGD) != 0)
13413 r_type = R_PPC64_NONE;
13414 insn2 = 0x7c636a14; /* add 3,3,13 */
13419 if (toc_symndx != 0)
13421 r_symndx = toc_symndx;
13422 rel->r_addend = toc_addend;
13424 r_type = R_PPC64_TPREL16_LO;
13425 rel->r_offset = offset + d_offset;
13426 insn2 = 0x38630000; /* addi 3,3,0 */
13428 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13429 /* Zap the reloc on the _tls_get_addr call too. */
13430 BFD_ASSERT (offset == rel[1].r_offset);
13431 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13432 insn3 = bfd_get_32 (output_bfd,
13433 contents + offset + 4);
13435 || insn3 == CROR_151515 || insn3 == CROR_313131)
13437 rel->r_offset += 4;
13438 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13441 bfd_put_32 (output_bfd, insn2, contents + offset);
13442 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13450 case R_PPC64_TLSLD:
13451 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13453 unsigned int insn2, insn3;
13454 bfd_vma offset = rel->r_offset;
13457 sec = local_sections[toc_symndx];
13459 r_symndx < symtab_hdr->sh_info;
13461 if (local_sections[r_symndx] == sec)
13463 if (r_symndx >= symtab_hdr->sh_info)
13464 r_symndx = STN_UNDEF;
13465 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13466 if (r_symndx != STN_UNDEF)
13467 rel->r_addend -= (local_syms[r_symndx].st_value
13468 + sec->output_offset
13469 + sec->output_section->vma);
13471 r_type = R_PPC64_TPREL16_LO;
13472 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13473 rel->r_offset = offset + d_offset;
13474 /* Zap the reloc on the _tls_get_addr call too. */
13475 BFD_ASSERT (offset == rel[1].r_offset);
13476 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13477 insn2 = 0x38630000; /* addi 3,3,0 */
13478 insn3 = bfd_get_32 (output_bfd,
13479 contents + offset + 4);
13481 || insn3 == CROR_151515 || insn3 == CROR_313131)
13483 rel->r_offset += 4;
13484 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13487 bfd_put_32 (output_bfd, insn2, contents + offset);
13493 case R_PPC64_DTPMOD64:
13494 if (rel + 1 < relend
13495 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13496 && rel[1].r_offset == rel->r_offset + 8)
13498 if ((tls_mask & TLS_GD) == 0)
13500 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13501 if ((tls_mask & TLS_TPRELGD) != 0)
13502 r_type = R_PPC64_TPREL64;
13505 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13506 r_type = R_PPC64_NONE;
13508 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13513 if ((tls_mask & TLS_LD) == 0)
13515 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13516 r_type = R_PPC64_NONE;
13517 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13522 case R_PPC64_TPREL64:
13523 if ((tls_mask & TLS_TPREL) == 0)
13525 r_type = R_PPC64_NONE;
13526 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13530 case R_PPC64_REL16_HA:
13531 /* If we are generating a non-PIC executable, edit
13532 . 0: addis 2,12,.TOC.-0b@ha
13533 . addi 2,2,.TOC.-0b@l
13534 used by ELFv2 global entry points to set up r2, to
13537 if .TOC. is in range. */
13539 && h != NULL && &h->elf == htab->elf.hgot
13540 && rel + 1 < relend
13541 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13542 && rel[1].r_offset == rel->r_offset + 4
13543 && rel[1].r_addend == rel->r_addend + 4
13544 && relocation + 0x80008000 <= 0xffffffff)
13546 unsigned int insn1, insn2;
13547 bfd_vma offset = rel->r_offset - d_offset;
13548 insn1 = bfd_get_32 (output_bfd, contents + offset);
13549 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13550 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13551 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13553 r_type = R_PPC64_ADDR16_HA;
13554 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13555 rel->r_addend -= d_offset;
13556 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13557 rel[1].r_addend -= d_offset + 4;
13558 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13564 /* Handle other relocations that tweak non-addend part of insn. */
13566 max_br_offset = 1 << 25;
13567 addend = rel->r_addend;
13568 reloc_dest = DEST_NORMAL;
13574 case R_PPC64_TOCSAVE:
13575 if (relocation + addend == (rel->r_offset
13576 + input_section->output_offset
13577 + input_section->output_section->vma)
13578 && tocsave_find (htab, NO_INSERT,
13579 &local_syms, rel, input_bfd))
13581 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13583 || insn == CROR_151515 || insn == CROR_313131)
13584 bfd_put_32 (input_bfd,
13585 STD_R2_0R1 + STK_TOC (htab),
13586 contents + rel->r_offset);
13590 /* Branch taken prediction relocations. */
13591 case R_PPC64_ADDR14_BRTAKEN:
13592 case R_PPC64_REL14_BRTAKEN:
13593 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13596 /* Branch not taken prediction relocations. */
13597 case R_PPC64_ADDR14_BRNTAKEN:
13598 case R_PPC64_REL14_BRNTAKEN:
13599 insn |= bfd_get_32 (output_bfd,
13600 contents + rel->r_offset) & ~(0x01 << 21);
13603 case R_PPC64_REL14:
13604 max_br_offset = 1 << 15;
13607 case R_PPC64_REL24:
13608 /* Calls to functions with a different TOC, such as calls to
13609 shared objects, need to alter the TOC pointer. This is
13610 done using a linkage stub. A REL24 branching to these
13611 linkage stubs needs to be followed by a nop, as the nop
13612 will be replaced with an instruction to restore the TOC
13617 && h->oh->is_func_descriptor)
13618 fdh = ppc_follow_link (h->oh);
13619 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13621 if (stub_entry != NULL
13622 && (stub_entry->stub_type == ppc_stub_plt_call
13623 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13624 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13625 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13627 bfd_boolean can_plt_call = FALSE;
13629 /* All of these stubs will modify r2, so there must be a
13630 branch and link followed by a nop. The nop is
13631 replaced by an insn to restore r2. */
13632 if (rel->r_offset + 8 <= input_section->size)
13636 br = bfd_get_32 (input_bfd,
13637 contents + rel->r_offset);
13642 nop = bfd_get_32 (input_bfd,
13643 contents + rel->r_offset + 4);
13645 || nop == CROR_151515 || nop == CROR_313131)
13648 && (h == htab->tls_get_addr_fd
13649 || h == htab->tls_get_addr)
13650 && !htab->params->no_tls_get_addr_opt)
13652 /* Special stub used, leave nop alone. */
13655 bfd_put_32 (input_bfd,
13656 LD_R2_0R1 + STK_TOC (htab),
13657 contents + rel->r_offset + 4);
13658 can_plt_call = TRUE;
13663 if (!can_plt_call && h != NULL)
13665 const char *name = h->elf.root.root.string;
13670 if (strncmp (name, "__libc_start_main", 17) == 0
13671 && (name[17] == 0 || name[17] == '@'))
13673 /* Allow crt1 branch to go via a toc adjusting
13674 stub. Other calls that never return could do
13675 the same, if we could detect such. */
13676 can_plt_call = TRUE;
13682 /* g++ as of 20130507 emits self-calls without a
13683 following nop. This is arguably wrong since we
13684 have conflicting information. On the one hand a
13685 global symbol and on the other a local call
13686 sequence, but don't error for this special case.
13687 It isn't possible to cheaply verify we have
13688 exactly such a call. Allow all calls to the same
13690 asection *code_sec = sec;
13692 if (get_opd_info (sec) != NULL)
13694 bfd_vma off = (relocation + addend
13695 - sec->output_section->vma
13696 - sec->output_offset);
13698 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13700 if (code_sec == input_section)
13701 can_plt_call = TRUE;
13706 info->callbacks->einfo
13707 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13708 "recompile with -fPIC\n"),
13709 input_bfd, input_section, rel->r_offset, sym_name);
13711 bfd_set_error (bfd_error_bad_value);
13716 && (stub_entry->stub_type == ppc_stub_plt_call
13717 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13718 unresolved_reloc = FALSE;
13721 if ((stub_entry == NULL
13722 || stub_entry->stub_type == ppc_stub_long_branch
13723 || stub_entry->stub_type == ppc_stub_plt_branch)
13724 && get_opd_info (sec) != NULL)
13726 /* The branch destination is the value of the opd entry. */
13727 bfd_vma off = (relocation + addend
13728 - sec->output_section->vma
13729 - sec->output_offset);
13730 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13731 if (dest != (bfd_vma) -1)
13735 reloc_dest = DEST_OPD;
13739 /* If the branch is out of reach we ought to have a long
13741 from = (rel->r_offset
13742 + input_section->output_offset
13743 + input_section->output_section->vma);
13745 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13749 if (stub_entry != NULL
13750 && (stub_entry->stub_type == ppc_stub_long_branch
13751 || stub_entry->stub_type == ppc_stub_plt_branch)
13752 && (r_type == R_PPC64_ADDR14_BRTAKEN
13753 || r_type == R_PPC64_ADDR14_BRNTAKEN
13754 || (relocation + addend - from + max_br_offset
13755 < 2 * max_br_offset)))
13756 /* Don't use the stub if this branch is in range. */
13759 if (stub_entry != NULL)
13761 /* Munge up the value and addend so that we call the stub
13762 rather than the procedure directly. */
13763 relocation = (stub_entry->stub_offset
13764 + stub_entry->stub_sec->output_offset
13765 + stub_entry->stub_sec->output_section->vma);
13767 reloc_dest = DEST_STUB;
13769 if ((stub_entry->stub_type == ppc_stub_plt_call
13770 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13771 && (ALWAYS_EMIT_R2SAVE
13772 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13773 && rel + 1 < relend
13774 && rel[1].r_offset == rel->r_offset + 4
13775 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13783 /* Set 'a' bit. This is 0b00010 in BO field for branch
13784 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13785 for branch on CTR insns (BO == 1a00t or 1a01t). */
13786 if ((insn & (0x14 << 21)) == (0x04 << 21))
13787 insn |= 0x02 << 21;
13788 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13789 insn |= 0x08 << 21;
13795 /* Invert 'y' bit if not the default. */
13796 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13797 insn ^= 0x01 << 21;
13800 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13803 /* NOP out calls to undefined weak functions.
13804 We can thus call a weak function without first
13805 checking whether the function is defined. */
13807 && h->elf.root.type == bfd_link_hash_undefweak
13808 && h->elf.dynindx == -1
13809 && r_type == R_PPC64_REL24
13813 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13819 /* Set `addend'. */
13824 info->callbacks->einfo
13825 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13826 input_bfd, (int) r_type, sym_name);
13828 bfd_set_error (bfd_error_bad_value);
13834 case R_PPC64_TLSGD:
13835 case R_PPC64_TLSLD:
13836 case R_PPC64_TOCSAVE:
13837 case R_PPC64_GNU_VTINHERIT:
13838 case R_PPC64_GNU_VTENTRY:
13841 /* GOT16 relocations. Like an ADDR16 using the symbol's
13842 address in the GOT as relocation value instead of the
13843 symbol's value itself. Also, create a GOT entry for the
13844 symbol and put the symbol value there. */
13845 case R_PPC64_GOT_TLSGD16:
13846 case R_PPC64_GOT_TLSGD16_LO:
13847 case R_PPC64_GOT_TLSGD16_HI:
13848 case R_PPC64_GOT_TLSGD16_HA:
13849 tls_type = TLS_TLS | TLS_GD;
13852 case R_PPC64_GOT_TLSLD16:
13853 case R_PPC64_GOT_TLSLD16_LO:
13854 case R_PPC64_GOT_TLSLD16_HI:
13855 case R_PPC64_GOT_TLSLD16_HA:
13856 tls_type = TLS_TLS | TLS_LD;
13859 case R_PPC64_GOT_TPREL16_DS:
13860 case R_PPC64_GOT_TPREL16_LO_DS:
13861 case R_PPC64_GOT_TPREL16_HI:
13862 case R_PPC64_GOT_TPREL16_HA:
13863 tls_type = TLS_TLS | TLS_TPREL;
13866 case R_PPC64_GOT_DTPREL16_DS:
13867 case R_PPC64_GOT_DTPREL16_LO_DS:
13868 case R_PPC64_GOT_DTPREL16_HI:
13869 case R_PPC64_GOT_DTPREL16_HA:
13870 tls_type = TLS_TLS | TLS_DTPREL;
13873 case R_PPC64_GOT16:
13874 case R_PPC64_GOT16_LO:
13875 case R_PPC64_GOT16_HI:
13876 case R_PPC64_GOT16_HA:
13877 case R_PPC64_GOT16_DS:
13878 case R_PPC64_GOT16_LO_DS:
13881 /* Relocation is to the entry for this symbol in the global
13886 unsigned long indx = 0;
13887 struct got_entry *ent;
13889 if (tls_type == (TLS_TLS | TLS_LD)
13891 || !h->elf.def_dynamic))
13892 ent = ppc64_tlsld_got (input_bfd);
13898 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13899 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13902 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
13903 /* This is actually a static link, or it is a
13904 -Bsymbolic link and the symbol is defined
13905 locally, or the symbol was forced to be local
13906 because of a version file. */
13910 BFD_ASSERT (h->elf.dynindx != -1);
13911 indx = h->elf.dynindx;
13912 unresolved_reloc = FALSE;
13914 ent = h->elf.got.glist;
13918 if (local_got_ents == NULL)
13920 ent = local_got_ents[r_symndx];
13923 for (; ent != NULL; ent = ent->next)
13924 if (ent->addend == orig_rel.r_addend
13925 && ent->owner == input_bfd
13926 && ent->tls_type == tls_type)
13932 if (ent->is_indirect)
13933 ent = ent->got.ent;
13934 offp = &ent->got.offset;
13935 got = ppc64_elf_tdata (ent->owner)->got;
13939 /* The offset must always be a multiple of 8. We use the
13940 least significant bit to record whether we have already
13941 processed this entry. */
13943 if ((off & 1) != 0)
13947 /* Generate relocs for the dynamic linker, except in
13948 the case of TLSLD where we'll use one entry per
13956 ? h->elf.type == STT_GNU_IFUNC
13957 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13959 relgot = htab->elf.irelplt;
13960 else if ((info->shared || indx != 0)
13962 || (tls_type == (TLS_TLS | TLS_LD)
13963 && !h->elf.def_dynamic)
13964 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13965 || h->elf.root.type != bfd_link_hash_undefweak))
13966 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13967 if (relgot != NULL)
13969 outrel.r_offset = (got->output_section->vma
13970 + got->output_offset
13972 outrel.r_addend = addend;
13973 if (tls_type & (TLS_LD | TLS_GD))
13975 outrel.r_addend = 0;
13976 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13977 if (tls_type == (TLS_TLS | TLS_GD))
13979 loc = relgot->contents;
13980 loc += (relgot->reloc_count++
13981 * sizeof (Elf64_External_Rela));
13982 bfd_elf64_swap_reloca_out (output_bfd,
13984 outrel.r_offset += 8;
13985 outrel.r_addend = addend;
13987 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13990 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13991 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13992 else if (tls_type == (TLS_TLS | TLS_TPREL))
13993 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13994 else if (indx != 0)
13995 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13999 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14001 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14003 /* Write the .got section contents for the sake
14005 loc = got->contents + off;
14006 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14010 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14012 outrel.r_addend += relocation;
14013 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14014 outrel.r_addend -= htab->elf.tls_sec->vma;
14016 loc = relgot->contents;
14017 loc += (relgot->reloc_count++
14018 * sizeof (Elf64_External_Rela));
14019 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14022 /* Init the .got section contents here if we're not
14023 emitting a reloc. */
14026 relocation += addend;
14027 if (tls_type == (TLS_TLS | TLS_LD))
14029 else if (tls_type != 0)
14031 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14032 if (tls_type == (TLS_TLS | TLS_TPREL))
14033 relocation += DTP_OFFSET - TP_OFFSET;
14035 if (tls_type == (TLS_TLS | TLS_GD))
14037 bfd_put_64 (output_bfd, relocation,
14038 got->contents + off + 8);
14043 bfd_put_64 (output_bfd, relocation,
14044 got->contents + off);
14048 if (off >= (bfd_vma) -2)
14051 relocation = got->output_section->vma + got->output_offset + off;
14052 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14056 case R_PPC64_PLT16_HA:
14057 case R_PPC64_PLT16_HI:
14058 case R_PPC64_PLT16_LO:
14059 case R_PPC64_PLT32:
14060 case R_PPC64_PLT64:
14061 /* Relocation is to the entry for this symbol in the
14062 procedure linkage table. */
14064 /* Resolve a PLT reloc against a local symbol directly,
14065 without using the procedure linkage table. */
14069 /* It's possible that we didn't make a PLT entry for this
14070 symbol. This happens when statically linking PIC code,
14071 or when using -Bsymbolic. Go find a match if there is a
14073 if (htab->elf.splt != NULL)
14075 struct plt_entry *ent;
14076 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14077 if (ent->plt.offset != (bfd_vma) -1
14078 && ent->addend == orig_rel.r_addend)
14080 relocation = (htab->elf.splt->output_section->vma
14081 + htab->elf.splt->output_offset
14082 + ent->plt.offset);
14083 unresolved_reloc = FALSE;
14090 /* Relocation value is TOC base. */
14091 relocation = TOCstart;
14092 if (r_symndx == STN_UNDEF)
14093 relocation += htab->stub_group[input_section->id].toc_off;
14094 else if (unresolved_reloc)
14096 else if (sec != NULL && sec->id <= htab->top_id)
14097 relocation += htab->stub_group[sec->id].toc_off;
14099 unresolved_reloc = TRUE;
14102 /* TOC16 relocs. We want the offset relative to the TOC base,
14103 which is the address of the start of the TOC plus 0x8000.
14104 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14106 case R_PPC64_TOC16:
14107 case R_PPC64_TOC16_LO:
14108 case R_PPC64_TOC16_HI:
14109 case R_PPC64_TOC16_DS:
14110 case R_PPC64_TOC16_LO_DS:
14111 case R_PPC64_TOC16_HA:
14112 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14115 /* Relocate against the beginning of the section. */
14116 case R_PPC64_SECTOFF:
14117 case R_PPC64_SECTOFF_LO:
14118 case R_PPC64_SECTOFF_HI:
14119 case R_PPC64_SECTOFF_DS:
14120 case R_PPC64_SECTOFF_LO_DS:
14121 case R_PPC64_SECTOFF_HA:
14123 addend -= sec->output_section->vma;
14126 case R_PPC64_REL16:
14127 case R_PPC64_REL16_LO:
14128 case R_PPC64_REL16_HI:
14129 case R_PPC64_REL16_HA:
14132 case R_PPC64_REL14:
14133 case R_PPC64_REL14_BRNTAKEN:
14134 case R_PPC64_REL14_BRTAKEN:
14135 case R_PPC64_REL24:
14138 case R_PPC64_TPREL16:
14139 case R_PPC64_TPREL16_LO:
14140 case R_PPC64_TPREL16_HI:
14141 case R_PPC64_TPREL16_HA:
14142 case R_PPC64_TPREL16_DS:
14143 case R_PPC64_TPREL16_LO_DS:
14144 case R_PPC64_TPREL16_HIGH:
14145 case R_PPC64_TPREL16_HIGHA:
14146 case R_PPC64_TPREL16_HIGHER:
14147 case R_PPC64_TPREL16_HIGHERA:
14148 case R_PPC64_TPREL16_HIGHEST:
14149 case R_PPC64_TPREL16_HIGHESTA:
14151 && h->elf.root.type == bfd_link_hash_undefweak
14152 && h->elf.dynindx == -1)
14154 /* Make this relocation against an undefined weak symbol
14155 resolve to zero. This is really just a tweak, since
14156 code using weak externs ought to check that they are
14157 defined before using them. */
14158 bfd_byte *p = contents + rel->r_offset - d_offset;
14160 insn = bfd_get_32 (output_bfd, p);
14161 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14163 bfd_put_32 (output_bfd, insn, p);
14166 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14168 /* The TPREL16 relocs shouldn't really be used in shared
14169 libs as they will result in DT_TEXTREL being set, but
14170 support them anyway. */
14174 case R_PPC64_DTPREL16:
14175 case R_PPC64_DTPREL16_LO:
14176 case R_PPC64_DTPREL16_HI:
14177 case R_PPC64_DTPREL16_HA:
14178 case R_PPC64_DTPREL16_DS:
14179 case R_PPC64_DTPREL16_LO_DS:
14180 case R_PPC64_DTPREL16_HIGH:
14181 case R_PPC64_DTPREL16_HIGHA:
14182 case R_PPC64_DTPREL16_HIGHER:
14183 case R_PPC64_DTPREL16_HIGHERA:
14184 case R_PPC64_DTPREL16_HIGHEST:
14185 case R_PPC64_DTPREL16_HIGHESTA:
14186 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14189 case R_PPC64_ADDR64_LOCAL:
14190 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14195 case R_PPC64_DTPMOD64:
14200 case R_PPC64_TPREL64:
14201 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14204 case R_PPC64_DTPREL64:
14205 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14208 /* Relocations that may need to be propagated if this is a
14210 case R_PPC64_REL30:
14211 case R_PPC64_REL32:
14212 case R_PPC64_REL64:
14213 case R_PPC64_ADDR14:
14214 case R_PPC64_ADDR14_BRNTAKEN:
14215 case R_PPC64_ADDR14_BRTAKEN:
14216 case R_PPC64_ADDR16:
14217 case R_PPC64_ADDR16_DS:
14218 case R_PPC64_ADDR16_HA:
14219 case R_PPC64_ADDR16_HI:
14220 case R_PPC64_ADDR16_HIGH:
14221 case R_PPC64_ADDR16_HIGHA:
14222 case R_PPC64_ADDR16_HIGHER:
14223 case R_PPC64_ADDR16_HIGHERA:
14224 case R_PPC64_ADDR16_HIGHEST:
14225 case R_PPC64_ADDR16_HIGHESTA:
14226 case R_PPC64_ADDR16_LO:
14227 case R_PPC64_ADDR16_LO_DS:
14228 case R_PPC64_ADDR24:
14229 case R_PPC64_ADDR32:
14230 case R_PPC64_ADDR64:
14231 case R_PPC64_UADDR16:
14232 case R_PPC64_UADDR32:
14233 case R_PPC64_UADDR64:
14235 if ((input_section->flags & SEC_ALLOC) == 0)
14238 if (NO_OPD_RELOCS && is_opd)
14243 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14244 || h->elf.root.type != bfd_link_hash_undefweak)
14245 && (must_be_dyn_reloc (info, r_type)
14246 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14247 || (ELIMINATE_COPY_RELOCS
14250 && h->elf.dynindx != -1
14251 && !h->elf.non_got_ref
14252 && !h->elf.def_regular)
14255 ? h->elf.type == STT_GNU_IFUNC
14256 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14258 bfd_boolean skip, relocate;
14262 /* When generating a dynamic object, these relocations
14263 are copied into the output file to be resolved at run
14269 out_off = _bfd_elf_section_offset (output_bfd, info,
14270 input_section, rel->r_offset);
14271 if (out_off == (bfd_vma) -1)
14273 else if (out_off == (bfd_vma) -2)
14274 skip = TRUE, relocate = TRUE;
14275 out_off += (input_section->output_section->vma
14276 + input_section->output_offset);
14277 outrel.r_offset = out_off;
14278 outrel.r_addend = rel->r_addend;
14280 /* Optimize unaligned reloc use. */
14281 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14282 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14283 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14284 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14285 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14286 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14287 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14288 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14289 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14292 memset (&outrel, 0, sizeof outrel);
14293 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14295 && r_type != R_PPC64_TOC)
14297 BFD_ASSERT (h->elf.dynindx != -1);
14298 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14302 /* This symbol is local, or marked to become local,
14303 or this is an opd section reloc which must point
14304 at a local function. */
14305 outrel.r_addend += relocation;
14306 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14308 if (is_opd && h != NULL)
14310 /* Lie about opd entries. This case occurs
14311 when building shared libraries and we
14312 reference a function in another shared
14313 lib. The same thing happens for a weak
14314 definition in an application that's
14315 overridden by a strong definition in a
14316 shared lib. (I believe this is a generic
14317 bug in binutils handling of weak syms.)
14318 In these cases we won't use the opd
14319 entry in this lib. */
14320 unresolved_reloc = FALSE;
14323 && r_type == R_PPC64_ADDR64
14325 ? h->elf.type == STT_GNU_IFUNC
14326 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14327 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14330 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14332 /* We need to relocate .opd contents for ld.so.
14333 Prelink also wants simple and consistent rules
14334 for relocs. This make all RELATIVE relocs have
14335 *r_offset equal to r_addend. */
14344 ? h->elf.type == STT_GNU_IFUNC
14345 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14347 info->callbacks->einfo
14348 (_("%P: %H: %s for indirect "
14349 "function `%T' unsupported\n"),
14350 input_bfd, input_section, rel->r_offset,
14351 ppc64_elf_howto_table[r_type]->name,
14355 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14357 else if (sec == NULL || sec->owner == NULL)
14359 bfd_set_error (bfd_error_bad_value);
14366 osec = sec->output_section;
14367 indx = elf_section_data (osec)->dynindx;
14371 if ((osec->flags & SEC_READONLY) == 0
14372 && htab->elf.data_index_section != NULL)
14373 osec = htab->elf.data_index_section;
14375 osec = htab->elf.text_index_section;
14376 indx = elf_section_data (osec)->dynindx;
14378 BFD_ASSERT (indx != 0);
14380 /* We are turning this relocation into one
14381 against a section symbol, so subtract out
14382 the output section's address but not the
14383 offset of the input section in the output
14385 outrel.r_addend -= osec->vma;
14388 outrel.r_info = ELF64_R_INFO (indx, r_type);
14392 sreloc = elf_section_data (input_section)->sreloc;
14394 ? h->elf.type == STT_GNU_IFUNC
14395 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14396 sreloc = htab->elf.irelplt;
14397 if (sreloc == NULL)
14400 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14403 loc = sreloc->contents;
14404 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14405 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14407 /* If this reloc is against an external symbol, it will
14408 be computed at runtime, so there's no need to do
14409 anything now. However, for the sake of prelink ensure
14410 that the section contents are a known value. */
14413 unresolved_reloc = FALSE;
14414 /* The value chosen here is quite arbitrary as ld.so
14415 ignores section contents except for the special
14416 case of .opd where the contents might be accessed
14417 before relocation. Choose zero, as that won't
14418 cause reloc overflow. */
14421 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14422 to improve backward compatibility with older
14424 if (r_type == R_PPC64_ADDR64)
14425 addend = outrel.r_addend;
14426 /* Adjust pc_relative relocs to have zero in *r_offset. */
14427 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14428 addend = (input_section->output_section->vma
14429 + input_section->output_offset
14436 case R_PPC64_GLOB_DAT:
14437 case R_PPC64_JMP_SLOT:
14438 case R_PPC64_JMP_IREL:
14439 case R_PPC64_RELATIVE:
14440 /* We shouldn't ever see these dynamic relocs in relocatable
14442 /* Fall through. */
14444 case R_PPC64_PLTGOT16:
14445 case R_PPC64_PLTGOT16_DS:
14446 case R_PPC64_PLTGOT16_HA:
14447 case R_PPC64_PLTGOT16_HI:
14448 case R_PPC64_PLTGOT16_LO:
14449 case R_PPC64_PLTGOT16_LO_DS:
14450 case R_PPC64_PLTREL32:
14451 case R_PPC64_PLTREL64:
14452 /* These ones haven't been implemented yet. */
14454 info->callbacks->einfo
14455 (_("%P: %B: %s is not supported for `%T'\n"),
14457 ppc64_elf_howto_table[r_type]->name, sym_name);
14459 bfd_set_error (bfd_error_invalid_operation);
14464 /* Multi-instruction sequences that access the TOC can be
14465 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14466 to nop; addi rb,r2,x; */
14472 case R_PPC64_GOT_TLSLD16_HI:
14473 case R_PPC64_GOT_TLSGD16_HI:
14474 case R_PPC64_GOT_TPREL16_HI:
14475 case R_PPC64_GOT_DTPREL16_HI:
14476 case R_PPC64_GOT16_HI:
14477 case R_PPC64_TOC16_HI:
14478 /* These relocs would only be useful if building up an
14479 offset to later add to r2, perhaps in an indexed
14480 addressing mode instruction. Don't try to optimize.
14481 Unfortunately, the possibility of someone building up an
14482 offset like this or even with the HA relocs, means that
14483 we need to check the high insn when optimizing the low
14487 case R_PPC64_GOT_TLSLD16_HA:
14488 case R_PPC64_GOT_TLSGD16_HA:
14489 case R_PPC64_GOT_TPREL16_HA:
14490 case R_PPC64_GOT_DTPREL16_HA:
14491 case R_PPC64_GOT16_HA:
14492 case R_PPC64_TOC16_HA:
14493 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14494 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14496 bfd_byte *p = contents + (rel->r_offset & ~3);
14497 bfd_put_32 (input_bfd, NOP, p);
14501 case R_PPC64_GOT_TLSLD16_LO:
14502 case R_PPC64_GOT_TLSGD16_LO:
14503 case R_PPC64_GOT_TPREL16_LO_DS:
14504 case R_PPC64_GOT_DTPREL16_LO_DS:
14505 case R_PPC64_GOT16_LO:
14506 case R_PPC64_GOT16_LO_DS:
14507 case R_PPC64_TOC16_LO:
14508 case R_PPC64_TOC16_LO_DS:
14509 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14510 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14512 bfd_byte *p = contents + (rel->r_offset & ~3);
14513 insn = bfd_get_32 (input_bfd, p);
14514 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14516 /* Transform addic to addi when we change reg. */
14517 insn &= ~((0x3f << 26) | (0x1f << 16));
14518 insn |= (14u << 26) | (2 << 16);
14522 insn &= ~(0x1f << 16);
14525 bfd_put_32 (input_bfd, insn, p);
14530 /* Do any further special processing. */
14531 howto = ppc64_elf_howto_table[(int) r_type];
14537 case R_PPC64_REL16_HA:
14538 case R_PPC64_ADDR16_HA:
14539 case R_PPC64_ADDR16_HIGHA:
14540 case R_PPC64_ADDR16_HIGHERA:
14541 case R_PPC64_ADDR16_HIGHESTA:
14542 case R_PPC64_TOC16_HA:
14543 case R_PPC64_SECTOFF_HA:
14544 case R_PPC64_TPREL16_HA:
14545 case R_PPC64_TPREL16_HIGHA:
14546 case R_PPC64_TPREL16_HIGHERA:
14547 case R_PPC64_TPREL16_HIGHESTA:
14548 case R_PPC64_DTPREL16_HA:
14549 case R_PPC64_DTPREL16_HIGHA:
14550 case R_PPC64_DTPREL16_HIGHERA:
14551 case R_PPC64_DTPREL16_HIGHESTA:
14552 /* It's just possible that this symbol is a weak symbol
14553 that's not actually defined anywhere. In that case,
14554 'sec' would be NULL, and we should leave the symbol
14555 alone (it will be set to zero elsewhere in the link). */
14560 case R_PPC64_GOT16_HA:
14561 case R_PPC64_PLTGOT16_HA:
14562 case R_PPC64_PLT16_HA:
14563 case R_PPC64_GOT_TLSGD16_HA:
14564 case R_PPC64_GOT_TLSLD16_HA:
14565 case R_PPC64_GOT_TPREL16_HA:
14566 case R_PPC64_GOT_DTPREL16_HA:
14567 /* Add 0x10000 if sign bit in 0:15 is set.
14568 Bits 0:15 are not used. */
14572 case R_PPC64_ADDR16_DS:
14573 case R_PPC64_ADDR16_LO_DS:
14574 case R_PPC64_GOT16_DS:
14575 case R_PPC64_GOT16_LO_DS:
14576 case R_PPC64_PLT16_LO_DS:
14577 case R_PPC64_SECTOFF_DS:
14578 case R_PPC64_SECTOFF_LO_DS:
14579 case R_PPC64_TOC16_DS:
14580 case R_PPC64_TOC16_LO_DS:
14581 case R_PPC64_PLTGOT16_DS:
14582 case R_PPC64_PLTGOT16_LO_DS:
14583 case R_PPC64_GOT_TPREL16_DS:
14584 case R_PPC64_GOT_TPREL16_LO_DS:
14585 case R_PPC64_GOT_DTPREL16_DS:
14586 case R_PPC64_GOT_DTPREL16_LO_DS:
14587 case R_PPC64_TPREL16_DS:
14588 case R_PPC64_TPREL16_LO_DS:
14589 case R_PPC64_DTPREL16_DS:
14590 case R_PPC64_DTPREL16_LO_DS:
14591 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14593 /* If this reloc is against an lq insn, then the value must be
14594 a multiple of 16. This is somewhat of a hack, but the
14595 "correct" way to do this by defining _DQ forms of all the
14596 _DS relocs bloats all reloc switches in this file. It
14597 doesn't seem to make much sense to use any of these relocs
14598 in data, so testing the insn should be safe. */
14599 if ((insn & (0x3f << 26)) == (56u << 26))
14601 if (((relocation + addend) & mask) != 0)
14603 info->callbacks->einfo
14604 (_("%P: %H: error: %s not a multiple of %u\n"),
14605 input_bfd, input_section, rel->r_offset,
14608 bfd_set_error (bfd_error_bad_value);
14615 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14616 because such sections are not SEC_ALLOC and thus ld.so will
14617 not process them. */
14618 if (unresolved_reloc
14619 && !((input_section->flags & SEC_DEBUGGING) != 0
14620 && h->elf.def_dynamic)
14621 && _bfd_elf_section_offset (output_bfd, info, input_section,
14622 rel->r_offset) != (bfd_vma) -1)
14624 info->callbacks->einfo
14625 (_("%P: %H: unresolvable %s against `%T'\n"),
14626 input_bfd, input_section, rel->r_offset,
14628 h->elf.root.root.string);
14632 /* 16-bit fields in insns mostly have signed values, but a
14633 few insns have 16-bit unsigned values. Really, we should
14634 have different reloc types. */
14635 if (howto->complain_on_overflow != complain_overflow_dont
14636 && howto->dst_mask == 0xffff
14637 && (input_section->flags & SEC_CODE) != 0)
14639 enum complain_overflow complain = complain_overflow_signed;
14641 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14642 if (howto->rightshift == 0
14643 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14644 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14645 || (insn & (0x3f << 26)) == 26u << 26 /* xori */
14646 || (insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14647 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14648 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14649 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
14650 complain = complain_overflow_unsigned;
14651 if (howto->complain_on_overflow != complain)
14653 alt_howto = *howto;
14654 alt_howto.complain_on_overflow = complain;
14655 howto = &alt_howto;
14659 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14660 rel->r_offset, relocation, addend);
14662 if (r != bfd_reloc_ok)
14664 char *more_info = NULL;
14665 const char *reloc_name = howto->name;
14667 if (reloc_dest != DEST_NORMAL)
14669 more_info = bfd_malloc (strlen (reloc_name) + 8);
14670 if (more_info != NULL)
14672 strcpy (more_info, reloc_name);
14673 strcat (more_info, (reloc_dest == DEST_OPD
14674 ? " (OPD)" : " (stub)"));
14675 reloc_name = more_info;
14679 if (r == bfd_reloc_overflow)
14684 && h->elf.root.type == bfd_link_hash_undefweak
14685 && howto->pc_relative)
14687 /* Assume this is a call protected by other code that
14688 detects the symbol is undefined. If this is the case,
14689 we can safely ignore the overflow. If not, the
14690 program is hosed anyway, and a little warning isn't
14696 if (!((*info->callbacks->reloc_overflow)
14697 (info, &h->elf.root, sym_name,
14698 reloc_name, orig_rel.r_addend,
14699 input_bfd, input_section, rel->r_offset)))
14704 info->callbacks->einfo
14705 (_("%P: %H: %s against `%T': error %d\n"),
14706 input_bfd, input_section, rel->r_offset,
14707 reloc_name, sym_name, (int) r);
14710 if (more_info != NULL)
14715 /* If we're emitting relocations, then shortly after this function
14716 returns, reloc offsets and addends for this section will be
14717 adjusted. Worse, reloc symbol indices will be for the output
14718 file rather than the input. Save a copy of the relocs for
14719 opd_entry_value. */
14720 if (is_opd && (info->emitrelocations || info->relocatable))
14723 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14724 rel = bfd_alloc (input_bfd, amt);
14725 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14726 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14729 memcpy (rel, relocs, amt);
14734 /* Adjust the value of any local symbols in opd sections. */
14737 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14738 const char *name ATTRIBUTE_UNUSED,
14739 Elf_Internal_Sym *elfsym,
14740 asection *input_sec,
14741 struct elf_link_hash_entry *h)
14743 struct _opd_sec_data *opd;
14750 opd = get_opd_info (input_sec);
14751 if (opd == NULL || opd->adjust == NULL)
14754 value = elfsym->st_value - input_sec->output_offset;
14755 if (!info->relocatable)
14756 value -= input_sec->output_section->vma;
14758 adjust = opd->adjust[value / 8];
14762 elfsym->st_value += adjust;
14766 /* Finish up dynamic symbol handling. We set the contents of various
14767 dynamic sections here. */
14770 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14771 struct bfd_link_info *info,
14772 struct elf_link_hash_entry *h,
14773 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14775 struct ppc_link_hash_table *htab;
14776 struct plt_entry *ent;
14777 Elf_Internal_Rela rela;
14780 htab = ppc_hash_table (info);
14784 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14785 if (ent->plt.offset != (bfd_vma) -1)
14787 /* This symbol has an entry in the procedure linkage
14788 table. Set it up. */
14789 if (!htab->elf.dynamic_sections_created
14790 || h->dynindx == -1)
14792 BFD_ASSERT (h->type == STT_GNU_IFUNC
14794 && (h->root.type == bfd_link_hash_defined
14795 || h->root.type == bfd_link_hash_defweak));
14796 rela.r_offset = (htab->elf.iplt->output_section->vma
14797 + htab->elf.iplt->output_offset
14798 + ent->plt.offset);
14800 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14802 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14803 rela.r_addend = (h->root.u.def.value
14804 + h->root.u.def.section->output_offset
14805 + h->root.u.def.section->output_section->vma
14807 loc = (htab->elf.irelplt->contents
14808 + (htab->elf.irelplt->reloc_count++
14809 * sizeof (Elf64_External_Rela)));
14813 rela.r_offset = (htab->elf.splt->output_section->vma
14814 + htab->elf.splt->output_offset
14815 + ent->plt.offset);
14816 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14817 rela.r_addend = ent->addend;
14818 loc = (htab->elf.srelplt->contents
14819 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14820 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14822 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14824 if (!htab->opd_abi)
14826 if (!h->def_regular)
14828 /* Mark the symbol as undefined, rather than as
14829 defined in glink. Leave the value if there were
14830 any relocations where pointer equality matters
14831 (this is a clue for the dynamic linker, to make
14832 function pointer comparisons work between an
14833 application and shared library), otherwise set it
14835 sym->st_shndx = SHN_UNDEF;
14836 if (!h->pointer_equality_needed)
14838 else if (!h->ref_regular_nonweak)
14840 /* This breaks function pointer comparisons, but
14841 that is better than breaking tests for a NULL
14842 function pointer. */
14851 /* This symbol needs a copy reloc. Set it up. */
14853 if (h->dynindx == -1
14854 || (h->root.type != bfd_link_hash_defined
14855 && h->root.type != bfd_link_hash_defweak)
14856 || htab->relbss == NULL)
14859 rela.r_offset = (h->root.u.def.value
14860 + h->root.u.def.section->output_section->vma
14861 + h->root.u.def.section->output_offset);
14862 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14864 loc = htab->relbss->contents;
14865 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14866 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14872 /* Used to decide how to sort relocs in an optimal manner for the
14873 dynamic linker, before writing them out. */
14875 static enum elf_reloc_type_class
14876 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14877 const asection *rel_sec,
14878 const Elf_Internal_Rela *rela)
14880 enum elf_ppc64_reloc_type r_type;
14881 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14883 if (rel_sec == htab->elf.irelplt)
14884 return reloc_class_ifunc;
14886 r_type = ELF64_R_TYPE (rela->r_info);
14889 case R_PPC64_RELATIVE:
14890 return reloc_class_relative;
14891 case R_PPC64_JMP_SLOT:
14892 return reloc_class_plt;
14894 return reloc_class_copy;
14896 return reloc_class_normal;
14900 /* Finish up the dynamic sections. */
14903 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14904 struct bfd_link_info *info)
14906 struct ppc_link_hash_table *htab;
14910 htab = ppc_hash_table (info);
14914 dynobj = htab->elf.dynobj;
14915 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14917 if (htab->elf.dynamic_sections_created)
14919 Elf64_External_Dyn *dyncon, *dynconend;
14921 if (sdyn == NULL || htab->elf.sgot == NULL)
14924 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14925 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14926 for (; dyncon < dynconend; dyncon++)
14928 Elf_Internal_Dyn dyn;
14931 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14938 case DT_PPC64_GLINK:
14940 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14941 /* We stupidly defined DT_PPC64_GLINK to be the start
14942 of glink rather than the first entry point, which is
14943 what ld.so needs, and now have a bigger stub to
14944 support automatic multiple TOCs. */
14945 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
14949 s = bfd_get_section_by_name (output_bfd, ".opd");
14952 dyn.d_un.d_ptr = s->vma;
14956 if (htab->do_multi_toc && htab->multi_toc_needed)
14957 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
14960 case DT_PPC64_OPDSZ:
14961 s = bfd_get_section_by_name (output_bfd, ".opd");
14964 dyn.d_un.d_val = s->size;
14968 s = htab->elf.splt;
14969 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14973 s = htab->elf.srelplt;
14974 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14978 dyn.d_un.d_val = htab->elf.srelplt->size;
14982 /* Don't count procedure linkage table relocs in the
14983 overall reloc count. */
14984 s = htab->elf.srelplt;
14987 dyn.d_un.d_val -= s->size;
14991 /* We may not be using the standard ELF linker script.
14992 If .rela.plt is the first .rela section, we adjust
14993 DT_RELA to not include it. */
14994 s = htab->elf.srelplt;
14997 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14999 dyn.d_un.d_ptr += s->size;
15003 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15007 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15009 /* Fill in the first entry in the global offset table.
15010 We use it to hold the link-time TOCbase. */
15011 bfd_put_64 (output_bfd,
15012 elf_gp (output_bfd) + TOC_BASE_OFF,
15013 htab->elf.sgot->contents);
15015 /* Set .got entry size. */
15016 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15019 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15021 /* Set .plt entry size. */
15022 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15023 = PLT_ENTRY_SIZE (htab);
15026 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15027 brlt ourselves if emitrelocations. */
15028 if (htab->brlt != NULL
15029 && htab->brlt->reloc_count != 0
15030 && !_bfd_elf_link_output_relocs (output_bfd,
15032 elf_section_data (htab->brlt)->rela.hdr,
15033 elf_section_data (htab->brlt)->relocs,
15037 if (htab->glink != NULL
15038 && htab->glink->reloc_count != 0
15039 && !_bfd_elf_link_output_relocs (output_bfd,
15041 elf_section_data (htab->glink)->rela.hdr,
15042 elf_section_data (htab->glink)->relocs,
15047 if (htab->glink_eh_frame != NULL
15048 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15049 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15050 htab->glink_eh_frame,
15051 htab->glink_eh_frame->contents))
15054 /* We need to handle writing out multiple GOT sections ourselves,
15055 since we didn't add them to DYNOBJ. We know dynobj is the first
15057 while ((dynobj = dynobj->link_next) != NULL)
15061 if (!is_ppc64_elf (dynobj))
15064 s = ppc64_elf_tdata (dynobj)->got;
15067 && s->output_section != bfd_abs_section_ptr
15068 && !bfd_set_section_contents (output_bfd, s->output_section,
15069 s->contents, s->output_offset,
15072 s = ppc64_elf_tdata (dynobj)->relgot;
15075 && s->output_section != bfd_abs_section_ptr
15076 && !bfd_set_section_contents (output_bfd, s->output_section,
15077 s->contents, s->output_offset,
15085 #include "elf64-target.h"
15087 /* FreeBSD support */
15089 #undef TARGET_LITTLE_SYM
15090 #undef TARGET_LITTLE_NAME
15092 #undef TARGET_BIG_SYM
15093 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
15094 #undef TARGET_BIG_NAME
15095 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15098 #define ELF_OSABI ELFOSABI_FREEBSD
15101 #define elf64_bed elf64_powerpc_fbsd_bed
15103 #include "elf64-target.h"