1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2016 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 powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_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 0x10000
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_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_before_check_relocs
98 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
131 /* Offsets to some stack save slots. */
133 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
134 /* This one is dodgy. ELFv2 does not have a linker word, so use the
135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
139 /* TOC base pointers offset from start of TOC. */
140 #define TOC_BASE_OFF 0x8000
141 /* TOC base alignment. */
142 #define TOC_BASE_ALIGN 256
144 /* Offset of tp and dtp pointers from start of TLS block. */
145 #define TP_OFFSET 0x7000
146 #define DTP_OFFSET 0x8000
148 /* .plt call stub instructions. The normal stub is like this, but
149 sometimes the .plt entry crosses a 64k boundary and we need to
150 insert an addi to adjust r11. */
151 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
152 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
153 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
154 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
155 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
156 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
157 #define BCTR 0x4e800420 /* bctr */
159 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
160 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
161 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
163 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
164 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
165 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
166 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
167 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
168 #define BNECTR 0x4ca20420 /* bnectr+ */
169 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
171 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
172 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
173 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
175 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
176 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
177 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
179 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
180 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
181 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
182 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
183 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
185 /* glink call stub instructions. We enter with the index in R0. */
186 #define GLINK_CALL_STUB_SIZE (16*4)
190 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
191 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
193 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
194 /* ld %2,(0b-1b)(%11) */
195 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
196 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
202 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
203 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
204 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
205 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
206 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
209 #define NOP 0x60000000
211 /* Some other nops. */
212 #define CROR_151515 0x4def7b82
213 #define CROR_313131 0x4ffffb82
215 /* .glink entries for the first 32k functions are two instructions. */
216 #define LI_R0_0 0x38000000 /* li %r0,0 */
217 #define B_DOT 0x48000000 /* b . */
219 /* After that, we need two instructions to load the index, followed by
221 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
222 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
224 /* Instructions used by the save and restore reg functions. */
225 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
226 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
227 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
228 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
229 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
230 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
231 #define LI_R12_0 0x39800000 /* li %r12,0 */
232 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
233 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
234 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
235 #define BLR 0x4e800020 /* blr */
237 /* Since .opd is an array of descriptors and each entry will end up
238 with identical R_PPC64_RELATIVE relocs, there is really no need to
239 propagate .opd relocs; The dynamic linker should be taught to
240 relocate .opd without reloc entries. */
241 #ifndef NO_OPD_RELOCS
242 #define NO_OPD_RELOCS 0
246 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
250 abiversion (bfd *abfd)
252 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
256 set_abiversion (bfd *abfd, int ver)
258 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
259 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
262 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
264 /* Relocation HOWTO's. */
265 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
267 static reloc_howto_type ppc64_elf_howto_raw[] = {
268 /* This reloc does nothing. */
269 HOWTO (R_PPC64_NONE, /* type */
271 3, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE, /* pc_relative */
275 complain_overflow_dont, /* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_PPC64_NONE", /* name */
278 FALSE, /* partial_inplace */
281 FALSE), /* pcrel_offset */
283 /* A standard 32 bit relocation. */
284 HOWTO (R_PPC64_ADDR32, /* type */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
288 FALSE, /* pc_relative */
290 complain_overflow_bitfield, /* complain_on_overflow */
291 bfd_elf_generic_reloc, /* special_function */
292 "R_PPC64_ADDR32", /* name */
293 FALSE, /* partial_inplace */
295 0xffffffff, /* dst_mask */
296 FALSE), /* pcrel_offset */
298 /* An absolute 26 bit branch; the lower two bits must be zero.
299 FIXME: we don't check that, we just clear them. */
300 HOWTO (R_PPC64_ADDR24, /* type */
302 2, /* size (0 = byte, 1 = short, 2 = long) */
304 FALSE, /* pc_relative */
306 complain_overflow_bitfield, /* complain_on_overflow */
307 bfd_elf_generic_reloc, /* special_function */
308 "R_PPC64_ADDR24", /* name */
309 FALSE, /* partial_inplace */
311 0x03fffffc, /* dst_mask */
312 FALSE), /* pcrel_offset */
314 /* A standard 16 bit relocation. */
315 HOWTO (R_PPC64_ADDR16, /* type */
317 1, /* size (0 = byte, 1 = short, 2 = long) */
319 FALSE, /* pc_relative */
321 complain_overflow_bitfield, /* complain_on_overflow */
322 bfd_elf_generic_reloc, /* special_function */
323 "R_PPC64_ADDR16", /* name */
324 FALSE, /* partial_inplace */
326 0xffff, /* dst_mask */
327 FALSE), /* pcrel_offset */
329 /* A 16 bit relocation without overflow. */
330 HOWTO (R_PPC64_ADDR16_LO, /* type */
332 1, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_dont,/* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC64_ADDR16_LO", /* name */
339 FALSE, /* partial_inplace */
341 0xffff, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* Bits 16-31 of an address. */
345 HOWTO (R_PPC64_ADDR16_HI, /* type */
347 1, /* size (0 = byte, 1 = short, 2 = long) */
349 FALSE, /* pc_relative */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC64_ADDR16_HI", /* name */
354 FALSE, /* partial_inplace */
356 0xffff, /* dst_mask */
357 FALSE), /* pcrel_offset */
359 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
360 bits, treated as a signed number, is negative. */
361 HOWTO (R_PPC64_ADDR16_HA, /* type */
363 1, /* size (0 = byte, 1 = short, 2 = long) */
365 FALSE, /* pc_relative */
367 complain_overflow_signed, /* complain_on_overflow */
368 ppc64_elf_ha_reloc, /* special_function */
369 "R_PPC64_ADDR16_HA", /* name */
370 FALSE, /* partial_inplace */
372 0xffff, /* dst_mask */
373 FALSE), /* pcrel_offset */
375 /* An absolute 16 bit branch; the lower two bits must be zero.
376 FIXME: we don't check that, we just clear them. */
377 HOWTO (R_PPC64_ADDR14, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 FALSE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 ppc64_elf_branch_reloc, /* special_function */
385 "R_PPC64_ADDR14", /* name */
386 FALSE, /* partial_inplace */
388 0x0000fffc, /* dst_mask */
389 FALSE), /* pcrel_offset */
391 /* An absolute 16 bit branch, for which bit 10 should be set to
392 indicate that the branch is expected to be taken. The lower two
393 bits must be zero. */
394 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 FALSE, /* pc_relative */
400 complain_overflow_signed, /* complain_on_overflow */
401 ppc64_elf_brtaken_reloc, /* special_function */
402 "R_PPC64_ADDR14_BRTAKEN",/* name */
403 FALSE, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 FALSE), /* pcrel_offset */
408 /* An absolute 16 bit branch, for which bit 10 should be set to
409 indicate that the branch is not expected to be taken. The lower
410 two bits must be zero. */
411 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 FALSE, /* pc_relative */
417 complain_overflow_signed, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc, /* special_function */
419 "R_PPC64_ADDR14_BRNTAKEN",/* name */
420 FALSE, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 FALSE), /* pcrel_offset */
425 /* A relative 26 bit branch; the lower two bits must be zero. */
426 HOWTO (R_PPC64_REL24, /* type */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
430 TRUE, /* pc_relative */
432 complain_overflow_signed, /* complain_on_overflow */
433 ppc64_elf_branch_reloc, /* special_function */
434 "R_PPC64_REL24", /* name */
435 FALSE, /* partial_inplace */
437 0x03fffffc, /* dst_mask */
438 TRUE), /* pcrel_offset */
440 /* A relative 16 bit branch; the lower two bits must be zero. */
441 HOWTO (R_PPC64_REL14, /* type */
443 2, /* size (0 = byte, 1 = short, 2 = long) */
445 TRUE, /* pc_relative */
447 complain_overflow_signed, /* complain_on_overflow */
448 ppc64_elf_branch_reloc, /* special_function */
449 "R_PPC64_REL14", /* name */
450 FALSE, /* partial_inplace */
452 0x0000fffc, /* dst_mask */
453 TRUE), /* pcrel_offset */
455 /* A relative 16 bit branch. Bit 10 should be set to indicate that
456 the branch is expected to be taken. The lower two bits must be
458 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
460 2, /* size (0 = byte, 1 = short, 2 = long) */
462 TRUE, /* pc_relative */
464 complain_overflow_signed, /* complain_on_overflow */
465 ppc64_elf_brtaken_reloc, /* special_function */
466 "R_PPC64_REL14_BRTAKEN", /* name */
467 FALSE, /* partial_inplace */
469 0x0000fffc, /* dst_mask */
470 TRUE), /* pcrel_offset */
472 /* A relative 16 bit branch. Bit 10 should be set to indicate that
473 the branch is not expected to be taken. The lower two bits must
475 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 TRUE, /* pc_relative */
481 complain_overflow_signed, /* complain_on_overflow */
482 ppc64_elf_brtaken_reloc, /* special_function */
483 "R_PPC64_REL14_BRNTAKEN",/* name */
484 FALSE, /* partial_inplace */
486 0x0000fffc, /* dst_mask */
487 TRUE), /* pcrel_offset */
489 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
491 HOWTO (R_PPC64_GOT16, /* type */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE, /* pc_relative */
497 complain_overflow_signed, /* complain_on_overflow */
498 ppc64_elf_unhandled_reloc, /* special_function */
499 "R_PPC64_GOT16", /* name */
500 FALSE, /* partial_inplace */
502 0xffff, /* dst_mask */
503 FALSE), /* pcrel_offset */
505 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
507 HOWTO (R_PPC64_GOT16_LO, /* type */
509 1, /* size (0 = byte, 1 = short, 2 = long) */
511 FALSE, /* pc_relative */
513 complain_overflow_dont, /* complain_on_overflow */
514 ppc64_elf_unhandled_reloc, /* special_function */
515 "R_PPC64_GOT16_LO", /* name */
516 FALSE, /* partial_inplace */
518 0xffff, /* dst_mask */
519 FALSE), /* pcrel_offset */
521 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
523 HOWTO (R_PPC64_GOT16_HI, /* type */
525 1, /* size (0 = byte, 1 = short, 2 = long) */
527 FALSE, /* pc_relative */
529 complain_overflow_signed,/* complain_on_overflow */
530 ppc64_elf_unhandled_reloc, /* special_function */
531 "R_PPC64_GOT16_HI", /* name */
532 FALSE, /* partial_inplace */
534 0xffff, /* dst_mask */
535 FALSE), /* pcrel_offset */
537 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
539 HOWTO (R_PPC64_GOT16_HA, /* type */
541 1, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE, /* pc_relative */
545 complain_overflow_signed,/* complain_on_overflow */
546 ppc64_elf_unhandled_reloc, /* special_function */
547 "R_PPC64_GOT16_HA", /* name */
548 FALSE, /* partial_inplace */
550 0xffff, /* dst_mask */
551 FALSE), /* pcrel_offset */
553 /* This is used only by the dynamic linker. The symbol should exist
554 both in the object being run and in some shared library. The
555 dynamic linker copies the data addressed by the symbol from the
556 shared library into the object, because the object being
557 run has to have the data at some particular address. */
558 HOWTO (R_PPC64_COPY, /* type */
560 0, /* this one is variable size */
562 FALSE, /* pc_relative */
564 complain_overflow_dont, /* complain_on_overflow */
565 ppc64_elf_unhandled_reloc, /* special_function */
566 "R_PPC64_COPY", /* name */
567 FALSE, /* partial_inplace */
570 FALSE), /* pcrel_offset */
572 /* Like R_PPC64_ADDR64, but used when setting global offset table
574 HOWTO (R_PPC64_GLOB_DAT, /* type */
576 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
578 FALSE, /* pc_relative */
580 complain_overflow_dont, /* complain_on_overflow */
581 ppc64_elf_unhandled_reloc, /* special_function */
582 "R_PPC64_GLOB_DAT", /* name */
583 FALSE, /* partial_inplace */
585 ONES (64), /* dst_mask */
586 FALSE), /* pcrel_offset */
588 /* Created by the link editor. Marks a procedure linkage table
589 entry for a symbol. */
590 HOWTO (R_PPC64_JMP_SLOT, /* type */
592 0, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE, /* pc_relative */
596 complain_overflow_dont, /* complain_on_overflow */
597 ppc64_elf_unhandled_reloc, /* special_function */
598 "R_PPC64_JMP_SLOT", /* name */
599 FALSE, /* partial_inplace */
602 FALSE), /* pcrel_offset */
604 /* Used only by the dynamic linker. When the object is run, this
605 doubleword64 is set to the load address of the object, plus the
607 HOWTO (R_PPC64_RELATIVE, /* type */
609 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
611 FALSE, /* pc_relative */
613 complain_overflow_dont, /* complain_on_overflow */
614 bfd_elf_generic_reloc, /* special_function */
615 "R_PPC64_RELATIVE", /* name */
616 FALSE, /* partial_inplace */
618 ONES (64), /* dst_mask */
619 FALSE), /* pcrel_offset */
621 /* Like R_PPC64_ADDR32, but may be unaligned. */
622 HOWTO (R_PPC64_UADDR32, /* type */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
626 FALSE, /* pc_relative */
628 complain_overflow_bitfield, /* complain_on_overflow */
629 bfd_elf_generic_reloc, /* special_function */
630 "R_PPC64_UADDR32", /* name */
631 FALSE, /* partial_inplace */
633 0xffffffff, /* dst_mask */
634 FALSE), /* pcrel_offset */
636 /* Like R_PPC64_ADDR16, but may be unaligned. */
637 HOWTO (R_PPC64_UADDR16, /* type */
639 1, /* size (0 = byte, 1 = short, 2 = long) */
641 FALSE, /* pc_relative */
643 complain_overflow_bitfield, /* complain_on_overflow */
644 bfd_elf_generic_reloc, /* special_function */
645 "R_PPC64_UADDR16", /* name */
646 FALSE, /* partial_inplace */
648 0xffff, /* dst_mask */
649 FALSE), /* pcrel_offset */
651 /* 32-bit PC relative. */
652 HOWTO (R_PPC64_REL32, /* type */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
656 TRUE, /* pc_relative */
658 complain_overflow_signed, /* complain_on_overflow */
659 bfd_elf_generic_reloc, /* special_function */
660 "R_PPC64_REL32", /* name */
661 FALSE, /* partial_inplace */
663 0xffffffff, /* dst_mask */
664 TRUE), /* pcrel_offset */
666 /* 32-bit relocation to the symbol's procedure linkage table. */
667 HOWTO (R_PPC64_PLT32, /* type */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_bitfield, /* complain_on_overflow */
674 ppc64_elf_unhandled_reloc, /* special_function */
675 "R_PPC64_PLT32", /* name */
676 FALSE, /* partial_inplace */
678 0xffffffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
682 FIXME: R_PPC64_PLTREL32 not supported. */
683 HOWTO (R_PPC64_PLTREL32, /* type */
685 2, /* size (0 = byte, 1 = short, 2 = long) */
687 TRUE, /* pc_relative */
689 complain_overflow_signed, /* complain_on_overflow */
690 bfd_elf_generic_reloc, /* special_function */
691 "R_PPC64_PLTREL32", /* name */
692 FALSE, /* partial_inplace */
694 0xffffffff, /* dst_mask */
695 TRUE), /* pcrel_offset */
697 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
699 HOWTO (R_PPC64_PLT16_LO, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_dont, /* complain_on_overflow */
706 ppc64_elf_unhandled_reloc, /* special_function */
707 "R_PPC64_PLT16_LO", /* name */
708 FALSE, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
715 HOWTO (R_PPC64_PLT16_HI, /* type */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
719 FALSE, /* pc_relative */
721 complain_overflow_signed, /* complain_on_overflow */
722 ppc64_elf_unhandled_reloc, /* special_function */
723 "R_PPC64_PLT16_HI", /* name */
724 FALSE, /* partial_inplace */
726 0xffff, /* dst_mask */
727 FALSE), /* pcrel_offset */
729 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
731 HOWTO (R_PPC64_PLT16_HA, /* type */
733 1, /* size (0 = byte, 1 = short, 2 = long) */
735 FALSE, /* pc_relative */
737 complain_overflow_signed, /* complain_on_overflow */
738 ppc64_elf_unhandled_reloc, /* special_function */
739 "R_PPC64_PLT16_HA", /* name */
740 FALSE, /* partial_inplace */
742 0xffff, /* dst_mask */
743 FALSE), /* pcrel_offset */
745 /* 16-bit section relative relocation. */
746 HOWTO (R_PPC64_SECTOFF, /* type */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
750 FALSE, /* pc_relative */
752 complain_overflow_signed, /* complain_on_overflow */
753 ppc64_elf_sectoff_reloc, /* special_function */
754 "R_PPC64_SECTOFF", /* name */
755 FALSE, /* partial_inplace */
757 0xffff, /* dst_mask */
758 FALSE), /* pcrel_offset */
760 /* Like R_PPC64_SECTOFF, but no overflow warning. */
761 HOWTO (R_PPC64_SECTOFF_LO, /* type */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
765 FALSE, /* pc_relative */
767 complain_overflow_dont, /* complain_on_overflow */
768 ppc64_elf_sectoff_reloc, /* special_function */
769 "R_PPC64_SECTOFF_LO", /* name */
770 FALSE, /* partial_inplace */
772 0xffff, /* dst_mask */
773 FALSE), /* pcrel_offset */
775 /* 16-bit upper half section relative relocation. */
776 HOWTO (R_PPC64_SECTOFF_HI, /* type */
778 1, /* size (0 = byte, 1 = short, 2 = long) */
780 FALSE, /* pc_relative */
782 complain_overflow_signed, /* complain_on_overflow */
783 ppc64_elf_sectoff_reloc, /* special_function */
784 "R_PPC64_SECTOFF_HI", /* name */
785 FALSE, /* partial_inplace */
787 0xffff, /* dst_mask */
788 FALSE), /* pcrel_offset */
790 /* 16-bit upper half adjusted section relative relocation. */
791 HOWTO (R_PPC64_SECTOFF_HA, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE, /* pc_relative */
797 complain_overflow_signed, /* complain_on_overflow */
798 ppc64_elf_sectoff_ha_reloc, /* special_function */
799 "R_PPC64_SECTOFF_HA", /* name */
800 FALSE, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
805 /* Like R_PPC64_REL24 without touching the two least significant bits. */
806 HOWTO (R_PPC64_REL30, /* type */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
810 TRUE, /* pc_relative */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_PPC64_REL30", /* name */
815 FALSE, /* partial_inplace */
817 0xfffffffc, /* dst_mask */
818 TRUE), /* pcrel_offset */
820 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
822 /* A standard 64-bit relocation. */
823 HOWTO (R_PPC64_ADDR64, /* type */
825 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
827 FALSE, /* pc_relative */
829 complain_overflow_dont, /* complain_on_overflow */
830 bfd_elf_generic_reloc, /* special_function */
831 "R_PPC64_ADDR64", /* name */
832 FALSE, /* partial_inplace */
834 ONES (64), /* dst_mask */
835 FALSE), /* pcrel_offset */
837 /* The bits 32-47 of an address. */
838 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE, /* pc_relative */
844 complain_overflow_dont, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_ADDR16_HIGHER", /* name */
847 FALSE, /* partial_inplace */
849 0xffff, /* dst_mask */
850 FALSE), /* pcrel_offset */
852 /* The bits 32-47 of an address, plus 1 if the contents of the low
853 16 bits, treated as a signed number, is negative. */
854 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
856 1, /* size (0 = byte, 1 = short, 2 = long) */
858 FALSE, /* pc_relative */
860 complain_overflow_dont, /* complain_on_overflow */
861 ppc64_elf_ha_reloc, /* special_function */
862 "R_PPC64_ADDR16_HIGHERA", /* name */
863 FALSE, /* partial_inplace */
865 0xffff, /* dst_mask */
866 FALSE), /* pcrel_offset */
868 /* The bits 48-63 of an address. */
869 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
873 FALSE, /* pc_relative */
875 complain_overflow_dont, /* complain_on_overflow */
876 bfd_elf_generic_reloc, /* special_function */
877 "R_PPC64_ADDR16_HIGHEST", /* name */
878 FALSE, /* partial_inplace */
880 0xffff, /* dst_mask */
881 FALSE), /* pcrel_offset */
883 /* The bits 48-63 of an address, plus 1 if the contents of the low
884 16 bits, treated as a signed number, is negative. */
885 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
889 FALSE, /* pc_relative */
891 complain_overflow_dont, /* complain_on_overflow */
892 ppc64_elf_ha_reloc, /* special_function */
893 "R_PPC64_ADDR16_HIGHESTA", /* name */
894 FALSE, /* partial_inplace */
896 0xffff, /* dst_mask */
897 FALSE), /* pcrel_offset */
899 /* Like ADDR64, but may be unaligned. */
900 HOWTO (R_PPC64_UADDR64, /* type */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
904 FALSE, /* pc_relative */
906 complain_overflow_dont, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_PPC64_UADDR64", /* name */
909 FALSE, /* partial_inplace */
911 ONES (64), /* dst_mask */
912 FALSE), /* pcrel_offset */
914 /* 64-bit relative relocation. */
915 HOWTO (R_PPC64_REL64, /* type */
917 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
919 TRUE, /* pc_relative */
921 complain_overflow_dont, /* complain_on_overflow */
922 bfd_elf_generic_reloc, /* special_function */
923 "R_PPC64_REL64", /* name */
924 FALSE, /* partial_inplace */
926 ONES (64), /* dst_mask */
927 TRUE), /* pcrel_offset */
929 /* 64-bit relocation to the symbol's procedure linkage table. */
930 HOWTO (R_PPC64_PLT64, /* type */
932 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
934 FALSE, /* pc_relative */
936 complain_overflow_dont, /* complain_on_overflow */
937 ppc64_elf_unhandled_reloc, /* special_function */
938 "R_PPC64_PLT64", /* name */
939 FALSE, /* partial_inplace */
941 ONES (64), /* dst_mask */
942 FALSE), /* pcrel_offset */
944 /* 64-bit PC relative relocation to the symbol's procedure linkage
946 /* FIXME: R_PPC64_PLTREL64 not supported. */
947 HOWTO (R_PPC64_PLTREL64, /* type */
949 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
951 TRUE, /* pc_relative */
953 complain_overflow_dont, /* complain_on_overflow */
954 ppc64_elf_unhandled_reloc, /* special_function */
955 "R_PPC64_PLTREL64", /* name */
956 FALSE, /* partial_inplace */
958 ONES (64), /* dst_mask */
959 TRUE), /* pcrel_offset */
961 /* 16 bit TOC-relative relocation. */
963 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
964 HOWTO (R_PPC64_TOC16, /* type */
966 1, /* size (0 = byte, 1 = short, 2 = long) */
968 FALSE, /* pc_relative */
970 complain_overflow_signed, /* complain_on_overflow */
971 ppc64_elf_toc_reloc, /* special_function */
972 "R_PPC64_TOC16", /* name */
973 FALSE, /* partial_inplace */
975 0xffff, /* dst_mask */
976 FALSE), /* pcrel_offset */
978 /* 16 bit TOC-relative relocation without overflow. */
980 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
981 HOWTO (R_PPC64_TOC16_LO, /* type */
983 1, /* size (0 = byte, 1 = short, 2 = long) */
985 FALSE, /* pc_relative */
987 complain_overflow_dont, /* complain_on_overflow */
988 ppc64_elf_toc_reloc, /* special_function */
989 "R_PPC64_TOC16_LO", /* name */
990 FALSE, /* partial_inplace */
992 0xffff, /* dst_mask */
993 FALSE), /* pcrel_offset */
995 /* 16 bit TOC-relative relocation, high 16 bits. */
997 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
998 HOWTO (R_PPC64_TOC16_HI, /* type */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 FALSE, /* pc_relative */
1004 complain_overflow_signed, /* complain_on_overflow */
1005 ppc64_elf_toc_reloc, /* special_function */
1006 "R_PPC64_TOC16_HI", /* name */
1007 FALSE, /* partial_inplace */
1009 0xffff, /* dst_mask */
1010 FALSE), /* pcrel_offset */
1012 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1013 contents of the low 16 bits, treated as a signed number, is
1016 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1017 HOWTO (R_PPC64_TOC16_HA, /* type */
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE, /* pc_relative */
1023 complain_overflow_signed, /* complain_on_overflow */
1024 ppc64_elf_toc_ha_reloc, /* special_function */
1025 "R_PPC64_TOC16_HA", /* name */
1026 FALSE, /* partial_inplace */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1031 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1033 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1034 HOWTO (R_PPC64_TOC, /* type */
1036 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1038 FALSE, /* pc_relative */
1040 complain_overflow_dont, /* complain_on_overflow */
1041 ppc64_elf_toc64_reloc, /* special_function */
1042 "R_PPC64_TOC", /* name */
1043 FALSE, /* partial_inplace */
1045 ONES (64), /* dst_mask */
1046 FALSE), /* pcrel_offset */
1048 /* Like R_PPC64_GOT16, but also informs the link editor that the
1049 value to relocate may (!) refer to a PLT entry which the link
1050 editor (a) may replace with the symbol value. If the link editor
1051 is unable to fully resolve the symbol, it may (b) create a PLT
1052 entry and store the address to the new PLT entry in the GOT.
1053 This permits lazy resolution of function symbols at run time.
1054 The link editor may also skip all of this and just (c) emit a
1055 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1056 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1057 HOWTO (R_PPC64_PLTGOT16, /* type */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE, /* pc_relative */
1063 complain_overflow_signed, /* complain_on_overflow */
1064 ppc64_elf_unhandled_reloc, /* special_function */
1065 "R_PPC64_PLTGOT16", /* name */
1066 FALSE, /* partial_inplace */
1068 0xffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1071 /* Like R_PPC64_PLTGOT16, but without overflow. */
1072 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1073 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 ppc64_elf_unhandled_reloc, /* special_function */
1081 "R_PPC64_PLTGOT16_LO", /* name */
1082 FALSE, /* partial_inplace */
1084 0xffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1088 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1089 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1090 16, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE, /* pc_relative */
1095 complain_overflow_signed, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc, /* special_function */
1097 "R_PPC64_PLTGOT16_HI", /* name */
1098 FALSE, /* partial_inplace */
1100 0xffff, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1103 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1104 1 if the contents of the low 16 bits, treated as a signed number,
1106 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1107 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1108 16, /* rightshift */
1109 1, /* size (0 = byte, 1 = short, 2 = long) */
1111 FALSE, /* pc_relative */
1113 complain_overflow_signed, /* complain_on_overflow */
1114 ppc64_elf_unhandled_reloc, /* special_function */
1115 "R_PPC64_PLTGOT16_HA", /* name */
1116 FALSE, /* partial_inplace */
1118 0xffff, /* dst_mask */
1119 FALSE), /* pcrel_offset */
1121 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1122 HOWTO (R_PPC64_ADDR16_DS, /* type */
1124 1, /* size (0 = byte, 1 = short, 2 = long) */
1126 FALSE, /* pc_relative */
1128 complain_overflow_signed, /* complain_on_overflow */
1129 bfd_elf_generic_reloc, /* special_function */
1130 "R_PPC64_ADDR16_DS", /* name */
1131 FALSE, /* partial_inplace */
1133 0xfffc, /* dst_mask */
1134 FALSE), /* pcrel_offset */
1136 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1137 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1139 1, /* size (0 = byte, 1 = short, 2 = long) */
1141 FALSE, /* pc_relative */
1143 complain_overflow_dont,/* complain_on_overflow */
1144 bfd_elf_generic_reloc, /* special_function */
1145 "R_PPC64_ADDR16_LO_DS",/* name */
1146 FALSE, /* partial_inplace */
1148 0xfffc, /* dst_mask */
1149 FALSE), /* pcrel_offset */
1151 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1152 HOWTO (R_PPC64_GOT16_DS, /* type */
1154 1, /* size (0 = byte, 1 = short, 2 = long) */
1156 FALSE, /* pc_relative */
1158 complain_overflow_signed, /* complain_on_overflow */
1159 ppc64_elf_unhandled_reloc, /* special_function */
1160 "R_PPC64_GOT16_DS", /* name */
1161 FALSE, /* partial_inplace */
1163 0xfffc, /* dst_mask */
1164 FALSE), /* pcrel_offset */
1166 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1167 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1171 FALSE, /* pc_relative */
1173 complain_overflow_dont, /* complain_on_overflow */
1174 ppc64_elf_unhandled_reloc, /* special_function */
1175 "R_PPC64_GOT16_LO_DS", /* name */
1176 FALSE, /* partial_inplace */
1178 0xfffc, /* dst_mask */
1179 FALSE), /* pcrel_offset */
1181 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1182 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1184 1, /* size (0 = byte, 1 = short, 2 = long) */
1186 FALSE, /* pc_relative */
1188 complain_overflow_dont, /* complain_on_overflow */
1189 ppc64_elf_unhandled_reloc, /* special_function */
1190 "R_PPC64_PLT16_LO_DS", /* name */
1191 FALSE, /* partial_inplace */
1193 0xfffc, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1196 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1197 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 FALSE, /* pc_relative */
1203 complain_overflow_signed, /* complain_on_overflow */
1204 ppc64_elf_sectoff_reloc, /* special_function */
1205 "R_PPC64_SECTOFF_DS", /* name */
1206 FALSE, /* partial_inplace */
1208 0xfffc, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1211 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1212 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE, /* pc_relative */
1218 complain_overflow_dont, /* complain_on_overflow */
1219 ppc64_elf_sectoff_reloc, /* special_function */
1220 "R_PPC64_SECTOFF_LO_DS",/* name */
1221 FALSE, /* partial_inplace */
1223 0xfffc, /* dst_mask */
1224 FALSE), /* pcrel_offset */
1226 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1227 HOWTO (R_PPC64_TOC16_DS, /* type */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE, /* pc_relative */
1233 complain_overflow_signed, /* complain_on_overflow */
1234 ppc64_elf_toc_reloc, /* special_function */
1235 "R_PPC64_TOC16_DS", /* name */
1236 FALSE, /* partial_inplace */
1238 0xfffc, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1241 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1242 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1244 1, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE, /* pc_relative */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc64_elf_toc_reloc, /* special_function */
1250 "R_PPC64_TOC16_LO_DS", /* name */
1251 FALSE, /* partial_inplace */
1253 0xfffc, /* dst_mask */
1254 FALSE), /* pcrel_offset */
1256 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1257 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1258 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1260 1, /* size (0 = byte, 1 = short, 2 = long) */
1262 FALSE, /* pc_relative */
1264 complain_overflow_signed, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_PLTGOT16_DS", /* name */
1267 FALSE, /* partial_inplace */
1269 0xfffc, /* dst_mask */
1270 FALSE), /* pcrel_offset */
1272 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1273 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1274 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 FALSE, /* pc_relative */
1280 complain_overflow_dont, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc, /* special_function */
1282 "R_PPC64_PLTGOT16_LO_DS",/* name */
1283 FALSE, /* partial_inplace */
1285 0xfffc, /* dst_mask */
1286 FALSE), /* pcrel_offset */
1288 /* Marker relocs for TLS. */
1291 2, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE, /* pc_relative */
1295 complain_overflow_dont, /* complain_on_overflow */
1296 bfd_elf_generic_reloc, /* special_function */
1297 "R_PPC64_TLS", /* name */
1298 FALSE, /* partial_inplace */
1301 FALSE), /* pcrel_offset */
1303 HOWTO (R_PPC64_TLSGD,
1305 2, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE, /* pc_relative */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 bfd_elf_generic_reloc, /* special_function */
1311 "R_PPC64_TLSGD", /* name */
1312 FALSE, /* partial_inplace */
1315 FALSE), /* pcrel_offset */
1317 HOWTO (R_PPC64_TLSLD,
1319 2, /* size (0 = byte, 1 = short, 2 = long) */
1321 FALSE, /* pc_relative */
1323 complain_overflow_dont, /* complain_on_overflow */
1324 bfd_elf_generic_reloc, /* special_function */
1325 "R_PPC64_TLSLD", /* name */
1326 FALSE, /* partial_inplace */
1329 FALSE), /* pcrel_offset */
1331 HOWTO (R_PPC64_TOCSAVE,
1333 2, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE, /* pc_relative */
1337 complain_overflow_dont, /* complain_on_overflow */
1338 bfd_elf_generic_reloc, /* special_function */
1339 "R_PPC64_TOCSAVE", /* name */
1340 FALSE, /* partial_inplace */
1343 FALSE), /* pcrel_offset */
1345 /* Computes the load module index of the load module that contains the
1346 definition of its TLS sym. */
1347 HOWTO (R_PPC64_DTPMOD64,
1349 4, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE, /* pc_relative */
1353 complain_overflow_dont, /* complain_on_overflow */
1354 ppc64_elf_unhandled_reloc, /* special_function */
1355 "R_PPC64_DTPMOD64", /* name */
1356 FALSE, /* partial_inplace */
1358 ONES (64), /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* Computes a dtv-relative displacement, the difference between the value
1362 of sym+add and the base address of the thread-local storage block that
1363 contains the definition of sym, minus 0x8000. */
1364 HOWTO (R_PPC64_DTPREL64,
1366 4, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc, /* special_function */
1372 "R_PPC64_DTPREL64", /* name */
1373 FALSE, /* partial_inplace */
1375 ONES (64), /* dst_mask */
1376 FALSE), /* pcrel_offset */
1378 /* A 16 bit dtprel reloc. */
1379 HOWTO (R_PPC64_DTPREL16,
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE, /* pc_relative */
1385 complain_overflow_signed, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc, /* special_function */
1387 "R_PPC64_DTPREL16", /* name */
1388 FALSE, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1393 /* Like DTPREL16, but no overflow. */
1394 HOWTO (R_PPC64_DTPREL16_LO,
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 FALSE, /* pc_relative */
1400 complain_overflow_dont, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc, /* special_function */
1402 "R_PPC64_DTPREL16_LO", /* name */
1403 FALSE, /* partial_inplace */
1405 0xffff, /* dst_mask */
1406 FALSE), /* pcrel_offset */
1408 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1409 HOWTO (R_PPC64_DTPREL16_HI,
1410 16, /* rightshift */
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 FALSE, /* pc_relative */
1415 complain_overflow_signed, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_DTPREL16_HI", /* name */
1418 FALSE, /* partial_inplace */
1420 0xffff, /* dst_mask */
1421 FALSE), /* pcrel_offset */
1423 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1424 HOWTO (R_PPC64_DTPREL16_HA,
1425 16, /* rightshift */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE, /* pc_relative */
1430 complain_overflow_signed, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_DTPREL16_HA", /* name */
1433 FALSE, /* partial_inplace */
1435 0xffff, /* dst_mask */
1436 FALSE), /* pcrel_offset */
1438 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1439 HOWTO (R_PPC64_DTPREL16_HIGHER,
1440 32, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 FALSE, /* pc_relative */
1445 complain_overflow_dont, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_DTPREL16_HIGHER", /* name */
1448 FALSE, /* partial_inplace */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1453 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1454 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1455 32, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 FALSE, /* pc_relative */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc, /* special_function */
1462 "R_PPC64_DTPREL16_HIGHERA", /* name */
1463 FALSE, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1468 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1470 48, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE, /* pc_relative */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_DTPREL16_HIGHEST", /* name */
1478 FALSE, /* partial_inplace */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1483 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1485 48, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE, /* pc_relative */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1493 FALSE, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1498 /* Like DTPREL16, but for insns with a DS field. */
1499 HOWTO (R_PPC64_DTPREL16_DS,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE, /* pc_relative */
1505 complain_overflow_signed, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_DTPREL16_DS", /* name */
1508 FALSE, /* partial_inplace */
1510 0xfffc, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1513 /* Like DTPREL16_DS, but no overflow. */
1514 HOWTO (R_PPC64_DTPREL16_LO_DS,
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE, /* pc_relative */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_DTPREL16_LO_DS", /* name */
1523 FALSE, /* partial_inplace */
1525 0xfffc, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1528 /* Computes a tp-relative displacement, the difference between the value of
1529 sym+add and the value of the thread pointer (r13). */
1530 HOWTO (R_PPC64_TPREL64,
1532 4, /* size (0 = byte, 1 = short, 2 = long) */
1534 FALSE, /* pc_relative */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc, /* special_function */
1538 "R_PPC64_TPREL64", /* name */
1539 FALSE, /* partial_inplace */
1541 ONES (64), /* dst_mask */
1542 FALSE), /* pcrel_offset */
1544 /* A 16 bit tprel reloc. */
1545 HOWTO (R_PPC64_TPREL16,
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE, /* pc_relative */
1551 complain_overflow_signed, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc, /* special_function */
1553 "R_PPC64_TPREL16", /* name */
1554 FALSE, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1559 /* Like TPREL16, but no overflow. */
1560 HOWTO (R_PPC64_TPREL16_LO,
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE, /* pc_relative */
1566 complain_overflow_dont, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc, /* special_function */
1568 "R_PPC64_TPREL16_LO", /* name */
1569 FALSE, /* partial_inplace */
1571 0xffff, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1574 /* Like TPREL16_LO, but next higher group of 16 bits. */
1575 HOWTO (R_PPC64_TPREL16_HI,
1576 16, /* rightshift */
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE, /* pc_relative */
1581 complain_overflow_signed, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc, /* special_function */
1583 "R_PPC64_TPREL16_HI", /* name */
1584 FALSE, /* partial_inplace */
1586 0xffff, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1589 /* Like TPREL16_HI, but adjust for low 16 bits. */
1590 HOWTO (R_PPC64_TPREL16_HA,
1591 16, /* rightshift */
1592 1, /* size (0 = byte, 1 = short, 2 = long) */
1594 FALSE, /* pc_relative */
1596 complain_overflow_signed, /* complain_on_overflow */
1597 ppc64_elf_unhandled_reloc, /* special_function */
1598 "R_PPC64_TPREL16_HA", /* name */
1599 FALSE, /* partial_inplace */
1601 0xffff, /* dst_mask */
1602 FALSE), /* pcrel_offset */
1604 /* Like TPREL16_HI, but next higher group of 16 bits. */
1605 HOWTO (R_PPC64_TPREL16_HIGHER,
1606 32, /* rightshift */
1607 1, /* size (0 = byte, 1 = short, 2 = long) */
1609 FALSE, /* pc_relative */
1611 complain_overflow_dont, /* complain_on_overflow */
1612 ppc64_elf_unhandled_reloc, /* special_function */
1613 "R_PPC64_TPREL16_HIGHER", /* name */
1614 FALSE, /* partial_inplace */
1616 0xffff, /* dst_mask */
1617 FALSE), /* pcrel_offset */
1619 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1620 HOWTO (R_PPC64_TPREL16_HIGHERA,
1621 32, /* rightshift */
1622 1, /* size (0 = byte, 1 = short, 2 = long) */
1624 FALSE, /* pc_relative */
1626 complain_overflow_dont, /* complain_on_overflow */
1627 ppc64_elf_unhandled_reloc, /* special_function */
1628 "R_PPC64_TPREL16_HIGHERA", /* name */
1629 FALSE, /* partial_inplace */
1631 0xffff, /* dst_mask */
1632 FALSE), /* pcrel_offset */
1634 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1635 HOWTO (R_PPC64_TPREL16_HIGHEST,
1636 48, /* rightshift */
1637 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE, /* pc_relative */
1641 complain_overflow_dont, /* complain_on_overflow */
1642 ppc64_elf_unhandled_reloc, /* special_function */
1643 "R_PPC64_TPREL16_HIGHEST", /* name */
1644 FALSE, /* partial_inplace */
1646 0xffff, /* dst_mask */
1647 FALSE), /* pcrel_offset */
1649 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1650 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1651 48, /* rightshift */
1652 1, /* size (0 = byte, 1 = short, 2 = long) */
1654 FALSE, /* pc_relative */
1656 complain_overflow_dont, /* complain_on_overflow */
1657 ppc64_elf_unhandled_reloc, /* special_function */
1658 "R_PPC64_TPREL16_HIGHESTA", /* name */
1659 FALSE, /* partial_inplace */
1661 0xffff, /* dst_mask */
1662 FALSE), /* pcrel_offset */
1664 /* Like TPREL16, but for insns with a DS field. */
1665 HOWTO (R_PPC64_TPREL16_DS,
1667 1, /* size (0 = byte, 1 = short, 2 = long) */
1669 FALSE, /* pc_relative */
1671 complain_overflow_signed, /* complain_on_overflow */
1672 ppc64_elf_unhandled_reloc, /* special_function */
1673 "R_PPC64_TPREL16_DS", /* name */
1674 FALSE, /* partial_inplace */
1676 0xfffc, /* dst_mask */
1677 FALSE), /* pcrel_offset */
1679 /* Like TPREL16_DS, but no overflow. */
1680 HOWTO (R_PPC64_TPREL16_LO_DS,
1682 1, /* size (0 = byte, 1 = short, 2 = long) */
1684 FALSE, /* pc_relative */
1686 complain_overflow_dont, /* complain_on_overflow */
1687 ppc64_elf_unhandled_reloc, /* special_function */
1688 "R_PPC64_TPREL16_LO_DS", /* name */
1689 FALSE, /* partial_inplace */
1691 0xfffc, /* dst_mask */
1692 FALSE), /* pcrel_offset */
1694 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1695 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1696 to the first entry relative to the TOC base (r2). */
1697 HOWTO (R_PPC64_GOT_TLSGD16,
1699 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 FALSE, /* pc_relative */
1703 complain_overflow_signed, /* complain_on_overflow */
1704 ppc64_elf_unhandled_reloc, /* special_function */
1705 "R_PPC64_GOT_TLSGD16", /* name */
1706 FALSE, /* partial_inplace */
1708 0xffff, /* dst_mask */
1709 FALSE), /* pcrel_offset */
1711 /* Like GOT_TLSGD16, but no overflow. */
1712 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1714 1, /* size (0 = byte, 1 = short, 2 = long) */
1716 FALSE, /* pc_relative */
1718 complain_overflow_dont, /* complain_on_overflow */
1719 ppc64_elf_unhandled_reloc, /* special_function */
1720 "R_PPC64_GOT_TLSGD16_LO", /* name */
1721 FALSE, /* partial_inplace */
1723 0xffff, /* dst_mask */
1724 FALSE), /* pcrel_offset */
1726 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1727 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1728 16, /* rightshift */
1729 1, /* size (0 = byte, 1 = short, 2 = long) */
1731 FALSE, /* pc_relative */
1733 complain_overflow_signed, /* complain_on_overflow */
1734 ppc64_elf_unhandled_reloc, /* special_function */
1735 "R_PPC64_GOT_TLSGD16_HI", /* name */
1736 FALSE, /* partial_inplace */
1738 0xffff, /* dst_mask */
1739 FALSE), /* pcrel_offset */
1741 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1742 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 FALSE, /* pc_relative */
1748 complain_overflow_signed, /* complain_on_overflow */
1749 ppc64_elf_unhandled_reloc, /* special_function */
1750 "R_PPC64_GOT_TLSGD16_HA", /* name */
1751 FALSE, /* partial_inplace */
1753 0xffff, /* dst_mask */
1754 FALSE), /* pcrel_offset */
1756 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1757 with values (sym+add)@dtpmod and zero, and computes the offset to the
1758 first entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_TLSLD16,
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE, /* pc_relative */
1765 complain_overflow_signed, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_TLSLD16", /* name */
1768 FALSE, /* partial_inplace */
1770 0xffff, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1773 /* Like GOT_TLSLD16, but no overflow. */
1774 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE, /* pc_relative */
1780 complain_overflow_dont, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc, /* special_function */
1782 "R_PPC64_GOT_TLSLD16_LO", /* name */
1783 FALSE, /* partial_inplace */
1785 0xffff, /* dst_mask */
1786 FALSE), /* pcrel_offset */
1788 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1790 16, /* rightshift */
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 FALSE, /* pc_relative */
1795 complain_overflow_signed, /* complain_on_overflow */
1796 ppc64_elf_unhandled_reloc, /* special_function */
1797 "R_PPC64_GOT_TLSLD16_HI", /* name */
1798 FALSE, /* partial_inplace */
1800 0xffff, /* dst_mask */
1801 FALSE), /* pcrel_offset */
1803 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE, /* pc_relative */
1810 complain_overflow_signed, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc, /* special_function */
1812 "R_PPC64_GOT_TLSLD16_HA", /* name */
1813 FALSE, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE), /* pcrel_offset */
1818 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1819 the offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE, /* pc_relative */
1826 complain_overflow_signed, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc, /* special_function */
1828 "R_PPC64_GOT_DTPREL16_DS", /* name */
1829 FALSE, /* partial_inplace */
1831 0xfffc, /* dst_mask */
1832 FALSE), /* pcrel_offset */
1834 /* Like GOT_DTPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE, /* pc_relative */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc, /* special_function */
1843 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1844 FALSE, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE), /* pcrel_offset */
1849 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1851 16, /* rightshift */
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE, /* pc_relative */
1856 complain_overflow_signed, /* complain_on_overflow */
1857 ppc64_elf_unhandled_reloc, /* special_function */
1858 "R_PPC64_GOT_DTPREL16_HI", /* name */
1859 FALSE, /* partial_inplace */
1861 0xffff, /* dst_mask */
1862 FALSE), /* pcrel_offset */
1864 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1869 FALSE, /* pc_relative */
1871 complain_overflow_signed, /* complain_on_overflow */
1872 ppc64_elf_unhandled_reloc, /* special_function */
1873 "R_PPC64_GOT_DTPREL16_HA", /* name */
1874 FALSE, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE), /* pcrel_offset */
1879 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1880 offset to the entry relative to the TOC base (r2). */
1881 HOWTO (R_PPC64_GOT_TPREL16_DS,
1883 1, /* size (0 = byte, 1 = short, 2 = long) */
1885 FALSE, /* pc_relative */
1887 complain_overflow_signed, /* complain_on_overflow */
1888 ppc64_elf_unhandled_reloc, /* special_function */
1889 "R_PPC64_GOT_TPREL16_DS", /* name */
1890 FALSE, /* partial_inplace */
1892 0xfffc, /* dst_mask */
1893 FALSE), /* pcrel_offset */
1895 /* Like GOT_TPREL16_DS, but no overflow. */
1896 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1898 1, /* size (0 = byte, 1 = short, 2 = long) */
1900 FALSE, /* pc_relative */
1902 complain_overflow_dont, /* complain_on_overflow */
1903 ppc64_elf_unhandled_reloc, /* special_function */
1904 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1905 FALSE, /* partial_inplace */
1907 0xfffc, /* dst_mask */
1908 FALSE), /* pcrel_offset */
1910 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1911 HOWTO (R_PPC64_GOT_TPREL16_HI,
1912 16, /* rightshift */
1913 1, /* size (0 = byte, 1 = short, 2 = long) */
1915 FALSE, /* pc_relative */
1917 complain_overflow_signed, /* complain_on_overflow */
1918 ppc64_elf_unhandled_reloc, /* special_function */
1919 "R_PPC64_GOT_TPREL16_HI", /* name */
1920 FALSE, /* partial_inplace */
1922 0xffff, /* dst_mask */
1923 FALSE), /* pcrel_offset */
1925 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1926 HOWTO (R_PPC64_GOT_TPREL16_HA,
1927 16, /* rightshift */
1928 1, /* size (0 = byte, 1 = short, 2 = long) */
1930 FALSE, /* pc_relative */
1932 complain_overflow_signed, /* complain_on_overflow */
1933 ppc64_elf_unhandled_reloc, /* special_function */
1934 "R_PPC64_GOT_TPREL16_HA", /* name */
1935 FALSE, /* partial_inplace */
1937 0xffff, /* dst_mask */
1938 FALSE), /* pcrel_offset */
1940 HOWTO (R_PPC64_JMP_IREL, /* type */
1942 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1944 FALSE, /* pc_relative */
1946 complain_overflow_dont, /* complain_on_overflow */
1947 ppc64_elf_unhandled_reloc, /* special_function */
1948 "R_PPC64_JMP_IREL", /* name */
1949 FALSE, /* partial_inplace */
1952 FALSE), /* pcrel_offset */
1954 HOWTO (R_PPC64_IRELATIVE, /* type */
1956 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1958 FALSE, /* pc_relative */
1960 complain_overflow_dont, /* complain_on_overflow */
1961 bfd_elf_generic_reloc, /* special_function */
1962 "R_PPC64_IRELATIVE", /* name */
1963 FALSE, /* partial_inplace */
1965 ONES (64), /* dst_mask */
1966 FALSE), /* pcrel_offset */
1968 /* A 16 bit relative relocation. */
1969 HOWTO (R_PPC64_REL16, /* type */
1971 1, /* size (0 = byte, 1 = short, 2 = long) */
1973 TRUE, /* pc_relative */
1975 complain_overflow_signed, /* complain_on_overflow */
1976 bfd_elf_generic_reloc, /* special_function */
1977 "R_PPC64_REL16", /* name */
1978 FALSE, /* partial_inplace */
1980 0xffff, /* dst_mask */
1981 TRUE), /* pcrel_offset */
1983 /* A 16 bit relative relocation without overflow. */
1984 HOWTO (R_PPC64_REL16_LO, /* type */
1986 1, /* size (0 = byte, 1 = short, 2 = long) */
1988 TRUE, /* pc_relative */
1990 complain_overflow_dont,/* complain_on_overflow */
1991 bfd_elf_generic_reloc, /* special_function */
1992 "R_PPC64_REL16_LO", /* name */
1993 FALSE, /* partial_inplace */
1995 0xffff, /* dst_mask */
1996 TRUE), /* pcrel_offset */
1998 /* The high order 16 bits of a relative address. */
1999 HOWTO (R_PPC64_REL16_HI, /* type */
2000 16, /* rightshift */
2001 1, /* size (0 = byte, 1 = short, 2 = long) */
2003 TRUE, /* pc_relative */
2005 complain_overflow_signed, /* complain_on_overflow */
2006 bfd_elf_generic_reloc, /* special_function */
2007 "R_PPC64_REL16_HI", /* name */
2008 FALSE, /* partial_inplace */
2010 0xffff, /* dst_mask */
2011 TRUE), /* pcrel_offset */
2013 /* The high order 16 bits of a relative address, plus 1 if the contents of
2014 the low 16 bits, treated as a signed number, is negative. */
2015 HOWTO (R_PPC64_REL16_HA, /* type */
2016 16, /* rightshift */
2017 1, /* size (0 = byte, 1 = short, 2 = long) */
2019 TRUE, /* pc_relative */
2021 complain_overflow_signed, /* complain_on_overflow */
2022 ppc64_elf_ha_reloc, /* special_function */
2023 "R_PPC64_REL16_HA", /* name */
2024 FALSE, /* partial_inplace */
2026 0xffff, /* dst_mask */
2027 TRUE), /* pcrel_offset */
2029 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2030 HOWTO (R_PPC64_REL16DX_HA, /* type */
2031 16, /* rightshift */
2032 2, /* size (0 = byte, 1 = short, 2 = long) */
2034 TRUE, /* pc_relative */
2036 complain_overflow_signed, /* complain_on_overflow */
2037 ppc64_elf_ha_reloc, /* special_function */
2038 "R_PPC64_REL16DX_HA", /* name */
2039 FALSE, /* partial_inplace */
2041 0x1fffc1, /* dst_mask */
2042 TRUE), /* pcrel_offset */
2044 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2045 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2046 16, /* rightshift */
2047 1, /* size (0 = byte, 1 = short, 2 = long) */
2049 FALSE, /* pc_relative */
2051 complain_overflow_dont, /* complain_on_overflow */
2052 bfd_elf_generic_reloc, /* special_function */
2053 "R_PPC64_ADDR16_HIGH", /* name */
2054 FALSE, /* partial_inplace */
2056 0xffff, /* dst_mask */
2057 FALSE), /* pcrel_offset */
2059 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2060 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2061 16, /* rightshift */
2062 1, /* size (0 = byte, 1 = short, 2 = long) */
2064 FALSE, /* pc_relative */
2066 complain_overflow_dont, /* complain_on_overflow */
2067 ppc64_elf_ha_reloc, /* special_function */
2068 "R_PPC64_ADDR16_HIGHA", /* name */
2069 FALSE, /* partial_inplace */
2071 0xffff, /* dst_mask */
2072 FALSE), /* pcrel_offset */
2074 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2075 HOWTO (R_PPC64_DTPREL16_HIGH,
2076 16, /* rightshift */
2077 1, /* size (0 = byte, 1 = short, 2 = long) */
2079 FALSE, /* pc_relative */
2081 complain_overflow_dont, /* complain_on_overflow */
2082 ppc64_elf_unhandled_reloc, /* special_function */
2083 "R_PPC64_DTPREL16_HIGH", /* name */
2084 FALSE, /* partial_inplace */
2086 0xffff, /* dst_mask */
2087 FALSE), /* pcrel_offset */
2089 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2090 HOWTO (R_PPC64_DTPREL16_HIGHA,
2091 16, /* rightshift */
2092 1, /* size (0 = byte, 1 = short, 2 = long) */
2094 FALSE, /* pc_relative */
2096 complain_overflow_dont, /* complain_on_overflow */
2097 ppc64_elf_unhandled_reloc, /* special_function */
2098 "R_PPC64_DTPREL16_HIGHA", /* name */
2099 FALSE, /* partial_inplace */
2101 0xffff, /* dst_mask */
2102 FALSE), /* pcrel_offset */
2104 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2105 HOWTO (R_PPC64_TPREL16_HIGH,
2106 16, /* rightshift */
2107 1, /* size (0 = byte, 1 = short, 2 = long) */
2109 FALSE, /* pc_relative */
2111 complain_overflow_dont, /* complain_on_overflow */
2112 ppc64_elf_unhandled_reloc, /* special_function */
2113 "R_PPC64_TPREL16_HIGH", /* name */
2114 FALSE, /* partial_inplace */
2116 0xffff, /* dst_mask */
2117 FALSE), /* pcrel_offset */
2119 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2120 HOWTO (R_PPC64_TPREL16_HIGHA,
2121 16, /* rightshift */
2122 1, /* size (0 = byte, 1 = short, 2 = long) */
2124 FALSE, /* pc_relative */
2126 complain_overflow_dont, /* complain_on_overflow */
2127 ppc64_elf_unhandled_reloc, /* special_function */
2128 "R_PPC64_TPREL16_HIGHA", /* name */
2129 FALSE, /* partial_inplace */
2131 0xffff, /* dst_mask */
2132 FALSE), /* pcrel_offset */
2134 /* Marker reloc on ELFv2 large-model function entry. */
2135 HOWTO (R_PPC64_ENTRY,
2137 2, /* size (0 = byte, 1 = short, 2 = long) */
2139 FALSE, /* pc_relative */
2141 complain_overflow_dont, /* complain_on_overflow */
2142 bfd_elf_generic_reloc, /* special_function */
2143 "R_PPC64_ENTRY", /* name */
2144 FALSE, /* partial_inplace */
2147 FALSE), /* pcrel_offset */
2149 /* Like ADDR64, but use local entry point of function. */
2150 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2152 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2154 FALSE, /* pc_relative */
2156 complain_overflow_dont, /* complain_on_overflow */
2157 bfd_elf_generic_reloc, /* special_function */
2158 "R_PPC64_ADDR64_LOCAL", /* name */
2159 FALSE, /* partial_inplace */
2161 ONES (64), /* dst_mask */
2162 FALSE), /* pcrel_offset */
2164 /* GNU extension to record C++ vtable hierarchy. */
2165 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2167 0, /* size (0 = byte, 1 = short, 2 = long) */
2169 FALSE, /* pc_relative */
2171 complain_overflow_dont, /* complain_on_overflow */
2172 NULL, /* special_function */
2173 "R_PPC64_GNU_VTINHERIT", /* name */
2174 FALSE, /* partial_inplace */
2177 FALSE), /* pcrel_offset */
2179 /* GNU extension to record C++ vtable member usage. */
2180 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2182 0, /* size (0 = byte, 1 = short, 2 = long) */
2184 FALSE, /* pc_relative */
2186 complain_overflow_dont, /* complain_on_overflow */
2187 NULL, /* special_function */
2188 "R_PPC64_GNU_VTENTRY", /* name */
2189 FALSE, /* partial_inplace */
2192 FALSE), /* pcrel_offset */
2196 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2200 ppc_howto_init (void)
2202 unsigned int i, type;
2204 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2206 type = ppc64_elf_howto_raw[i].type;
2207 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
2208 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2212 static reloc_howto_type *
2213 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2214 bfd_reloc_code_real_type code)
2216 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2218 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2219 /* Initialize howto table if needed. */
2227 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2229 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2231 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2233 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2235 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2237 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2239 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2241 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2243 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2245 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2247 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2249 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2251 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2253 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2255 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2257 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2259 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2261 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2263 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2265 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2267 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2269 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2271 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2273 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2275 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2277 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2279 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2281 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2283 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2285 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2287 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2289 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2291 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2293 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2295 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2297 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2299 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2301 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2303 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2305 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2307 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2309 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2311 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2313 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2315 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2317 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2319 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2321 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2323 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2325 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2327 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2329 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2331 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2333 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2335 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2337 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2339 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2341 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2343 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2345 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2347 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2349 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2351 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2353 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2355 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2357 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2359 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2361 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2363 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2365 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2367 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2369 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2371 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2373 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2375 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2377 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2379 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2381 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2383 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2385 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2387 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2389 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2391 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2393 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2395 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2397 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2399 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2401 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2403 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2405 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2407 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2409 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2411 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2413 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2415 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2417 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2419 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2421 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2423 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2425 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2427 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2429 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2431 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2433 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2435 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2437 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2439 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2441 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2443 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2445 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2447 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2449 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2451 case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
2453 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2455 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2457 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2461 return ppc64_elf_howto_table[r];
2464 static reloc_howto_type *
2465 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2470 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2471 if (ppc64_elf_howto_raw[i].name != NULL
2472 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2473 return &ppc64_elf_howto_raw[i];
2478 /* Set the howto pointer for a PowerPC ELF reloc. */
2481 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2482 Elf_Internal_Rela *dst)
2486 /* Initialize howto table if needed. */
2487 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2490 type = ELF64_R_TYPE (dst->r_info);
2491 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
2493 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2495 type = R_PPC64_NONE;
2497 cache_ptr->howto = ppc64_elf_howto_table[type];
2500 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2502 static bfd_reloc_status_type
2503 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2504 void *data, asection *input_section,
2505 bfd *output_bfd, char **error_message)
2507 enum elf_ppc64_reloc_type r_type;
2509 bfd_size_type octets;
2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2515 if (output_bfd != NULL)
2516 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2517 input_section, output_bfd, error_message);
2519 /* Adjust the addend for sign extension of the low 16 bits.
2520 We won't actually be using the low 16 bits, so trashing them
2522 reloc_entry->addend += 0x8000;
2523 r_type = reloc_entry->howto->type;
2524 if (r_type != R_PPC64_REL16DX_HA)
2525 return bfd_reloc_continue;
2528 if (!bfd_is_com_section (symbol->section))
2529 value = symbol->value;
2530 value += (reloc_entry->addend
2531 + symbol->section->output_offset
2532 + symbol->section->output_section->vma);
2533 value -= (reloc_entry->address
2534 + input_section->output_offset
2535 + input_section->output_section->vma);
2536 value = (bfd_signed_vma) value >> 16;
2538 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2539 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2541 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2542 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2543 if (value + 0x8000 > 0xffff)
2544 return bfd_reloc_overflow;
2545 return bfd_reloc_ok;
2548 static bfd_reloc_status_type
2549 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2550 void *data, asection *input_section,
2551 bfd *output_bfd, char **error_message)
2553 if (output_bfd != NULL)
2554 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2555 input_section, output_bfd, error_message);
2557 if (strcmp (symbol->section->name, ".opd") == 0
2558 && (symbol->section->owner->flags & DYNAMIC) == 0)
2560 bfd_vma dest = opd_entry_value (symbol->section,
2561 symbol->value + reloc_entry->addend,
2563 if (dest != (bfd_vma) -1)
2564 reloc_entry->addend = dest - (symbol->value
2565 + symbol->section->output_section->vma
2566 + symbol->section->output_offset);
2570 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2572 if (symbol->section->owner != abfd
2573 && abiversion (symbol->section->owner) >= 2)
2577 for (i = 0; i < symbol->section->owner->symcount; ++i)
2579 asymbol *symdef = symbol->section->owner->outsymbols[i];
2581 if (strcmp (symdef->name, symbol->name) == 0)
2583 elfsym = (elf_symbol_type *) symdef;
2589 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2591 return bfd_reloc_continue;
2594 static bfd_reloc_status_type
2595 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2596 void *data, asection *input_section,
2597 bfd *output_bfd, char **error_message)
2600 enum elf_ppc64_reloc_type r_type;
2601 bfd_size_type octets;
2602 /* Assume 'at' branch hints. */
2603 bfd_boolean is_isa_v2 = TRUE;
2605 /* If this is a relocatable link (output_bfd test tells us), just
2606 call the generic function. Any adjustment will be done at final
2608 if (output_bfd != NULL)
2609 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2610 input_section, output_bfd, error_message);
2612 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2613 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2614 insn &= ~(0x01 << 21);
2615 r_type = reloc_entry->howto->type;
2616 if (r_type == R_PPC64_ADDR14_BRTAKEN
2617 || r_type == R_PPC64_REL14_BRTAKEN)
2618 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2622 /* Set 'a' bit. This is 0b00010 in BO field for branch
2623 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2624 for branch on CTR insns (BO == 1a00t or 1a01t). */
2625 if ((insn & (0x14 << 21)) == (0x04 << 21))
2627 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2637 if (!bfd_is_com_section (symbol->section))
2638 target = symbol->value;
2639 target += symbol->section->output_section->vma;
2640 target += symbol->section->output_offset;
2641 target += reloc_entry->addend;
2643 from = (reloc_entry->address
2644 + input_section->output_offset
2645 + input_section->output_section->vma);
2647 /* Invert 'y' bit if not the default. */
2648 if ((bfd_signed_vma) (target - from) < 0)
2651 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2653 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2654 input_section, output_bfd, error_message);
2657 static bfd_reloc_status_type
2658 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2659 void *data, asection *input_section,
2660 bfd *output_bfd, char **error_message)
2662 /* If this is a relocatable link (output_bfd test tells us), just
2663 call the generic function. Any adjustment will be done at final
2665 if (output_bfd != NULL)
2666 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2667 input_section, output_bfd, error_message);
2669 /* Subtract the symbol section base address. */
2670 reloc_entry->addend -= symbol->section->output_section->vma;
2671 return bfd_reloc_continue;
2674 static bfd_reloc_status_type
2675 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2676 void *data, asection *input_section,
2677 bfd *output_bfd, char **error_message)
2679 /* If this is a relocatable link (output_bfd test tells us), just
2680 call the generic function. Any adjustment will be done at final
2682 if (output_bfd != NULL)
2683 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2684 input_section, output_bfd, error_message);
2686 /* Subtract the symbol section base address. */
2687 reloc_entry->addend -= symbol->section->output_section->vma;
2689 /* Adjust the addend for sign extension of the low 16 bits. */
2690 reloc_entry->addend += 0x8000;
2691 return bfd_reloc_continue;
2694 static bfd_reloc_status_type
2695 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2696 void *data, asection *input_section,
2697 bfd *output_bfd, char **error_message)
2701 /* If this is a relocatable link (output_bfd test tells us), just
2702 call the generic function. Any adjustment will be done at final
2704 if (output_bfd != NULL)
2705 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2706 input_section, output_bfd, error_message);
2708 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2710 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2712 /* Subtract the TOC base address. */
2713 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2714 return bfd_reloc_continue;
2717 static bfd_reloc_status_type
2718 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2719 void *data, asection *input_section,
2720 bfd *output_bfd, char **error_message)
2724 /* If this is a relocatable link (output_bfd test tells us), just
2725 call the generic function. Any adjustment will be done at final
2727 if (output_bfd != NULL)
2728 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2729 input_section, output_bfd, error_message);
2731 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2733 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2735 /* Subtract the TOC base address. */
2736 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2738 /* Adjust the addend for sign extension of the low 16 bits. */
2739 reloc_entry->addend += 0x8000;
2740 return bfd_reloc_continue;
2743 static bfd_reloc_status_type
2744 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2745 void *data, asection *input_section,
2746 bfd *output_bfd, char **error_message)
2749 bfd_size_type octets;
2751 /* If this is a relocatable link (output_bfd test tells us), just
2752 call the generic function. Any adjustment will be done at final
2754 if (output_bfd != NULL)
2755 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2756 input_section, output_bfd, error_message);
2758 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2760 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2762 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2763 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2764 return bfd_reloc_ok;
2767 static bfd_reloc_status_type
2768 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2769 void *data, asection *input_section,
2770 bfd *output_bfd, char **error_message)
2772 /* If this is a relocatable link (output_bfd test tells us), just
2773 call the generic function. Any adjustment will be done at final
2775 if (output_bfd != NULL)
2776 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2777 input_section, output_bfd, error_message);
2779 if (error_message != NULL)
2781 static char buf[60];
2782 sprintf (buf, "generic linker can't handle %s",
2783 reloc_entry->howto->name);
2784 *error_message = buf;
2786 return bfd_reloc_dangerous;
2789 /* Track GOT entries needed for a given symbol. We might need more
2790 than one got entry per symbol. */
2793 struct got_entry *next;
2795 /* The symbol addend that we'll be placing in the GOT. */
2798 /* Unlike other ELF targets, we use separate GOT entries for the same
2799 symbol referenced from different input files. This is to support
2800 automatic multiple TOC/GOT sections, where the TOC base can vary
2801 from one input file to another. After partitioning into TOC groups
2802 we merge entries within the group.
2804 Point to the BFD owning this GOT entry. */
2807 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2808 TLS_TPREL or TLS_DTPREL for tls entries. */
2809 unsigned char tls_type;
2811 /* Non-zero if got.ent points to real entry. */
2812 unsigned char is_indirect;
2814 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2817 bfd_signed_vma refcount;
2819 struct got_entry *ent;
2823 /* The same for PLT. */
2826 struct plt_entry *next;
2832 bfd_signed_vma refcount;
2837 struct ppc64_elf_obj_tdata
2839 struct elf_obj_tdata elf;
2841 /* Shortcuts to dynamic linker sections. */
2845 /* Used during garbage collection. We attach global symbols defined
2846 on removed .opd entries to this section so that the sym is removed. */
2847 asection *deleted_section;
2849 /* TLS local dynamic got entry handling. Support for multiple GOT
2850 sections means we potentially need one of these for each input bfd. */
2851 struct got_entry tlsld_got;
2854 /* A copy of relocs before they are modified for --emit-relocs. */
2855 Elf_Internal_Rela *relocs;
2857 /* Section contents. */
2861 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2862 the reloc to be in the range -32768 to 32767. */
2863 unsigned int has_small_toc_reloc : 1;
2865 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2866 instruction not one we handle. */
2867 unsigned int unexpected_toc_insn : 1;
2870 #define ppc64_elf_tdata(bfd) \
2871 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2873 #define ppc64_tlsld_got(bfd) \
2874 (&ppc64_elf_tdata (bfd)->tlsld_got)
2876 #define is_ppc64_elf(bfd) \
2877 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2878 && elf_object_id (bfd) == PPC64_ELF_DATA)
2880 /* Override the generic function because we store some extras. */
2883 ppc64_elf_mkobject (bfd *abfd)
2885 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2889 /* Fix bad default arch selected for a 64 bit input bfd when the
2890 default is 32 bit. */
2893 ppc64_elf_object_p (bfd *abfd)
2895 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2897 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2899 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2901 /* Relies on arch after 32 bit default being 64 bit default. */
2902 abfd->arch_info = abfd->arch_info->next;
2903 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2909 /* Support for core dump NOTE sections. */
2912 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2914 size_t offset, size;
2916 if (note->descsz != 504)
2920 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2923 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2929 /* Make a ".reg/999" section. */
2930 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2931 size, note->descpos + offset);
2935 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2937 if (note->descsz != 136)
2940 elf_tdata (abfd)->core->pid
2941 = bfd_get_32 (abfd, note->descdata + 24);
2942 elf_tdata (abfd)->core->program
2943 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2944 elf_tdata (abfd)->core->command
2945 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2951 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2964 va_start (ap, note_type);
2965 memset (data, 0, sizeof (data));
2966 strncpy (data + 40, va_arg (ap, const char *), 16);
2967 strncpy (data + 56, va_arg (ap, const char *), 80);
2969 return elfcore_write_note (abfd, buf, bufsiz,
2970 "CORE", note_type, data, sizeof (data));
2981 va_start (ap, note_type);
2982 memset (data, 0, 112);
2983 pid = va_arg (ap, long);
2984 bfd_put_32 (abfd, pid, data + 32);
2985 cursig = va_arg (ap, int);
2986 bfd_put_16 (abfd, cursig, data + 12);
2987 greg = va_arg (ap, const void *);
2988 memcpy (data + 112, greg, 384);
2989 memset (data + 496, 0, 8);
2991 return elfcore_write_note (abfd, buf, bufsiz,
2992 "CORE", note_type, data, sizeof (data));
2997 /* Add extra PPC sections. */
2999 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
3001 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
3002 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3003 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3004 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3005 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3006 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3007 { NULL, 0, 0, 0, 0 }
3010 enum _ppc64_sec_type {
3016 struct _ppc64_elf_section_data
3018 struct bfd_elf_section_data elf;
3022 /* An array with one entry for each opd function descriptor,
3023 and some spares since opd entries may be either 16 or 24 bytes. */
3024 #define OPD_NDX(OFF) ((OFF) >> 4)
3025 struct _opd_sec_data
3027 /* Points to the function code section for local opd entries. */
3028 asection **func_sec;
3030 /* After editing .opd, adjust references to opd local syms. */
3034 /* An array for toc sections, indexed by offset/8. */
3035 struct _toc_sec_data
3037 /* Specifies the relocation symbol index used at a given toc offset. */
3040 /* And the relocation addend. */
3045 enum _ppc64_sec_type sec_type:2;
3047 /* Flag set when small branches are detected. Used to
3048 select suitable defaults for the stub group size. */
3049 unsigned int has_14bit_branch:1;
3052 #define ppc64_elf_section_data(sec) \
3053 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3056 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
3058 if (!sec->used_by_bfd)
3060 struct _ppc64_elf_section_data *sdata;
3061 bfd_size_type amt = sizeof (*sdata);
3063 sdata = bfd_zalloc (abfd, amt);
3066 sec->used_by_bfd = sdata;
3069 return _bfd_elf_new_section_hook (abfd, sec);
3072 static struct _opd_sec_data *
3073 get_opd_info (asection * sec)
3076 && ppc64_elf_section_data (sec) != NULL
3077 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3078 return &ppc64_elf_section_data (sec)->u.opd;
3082 /* Parameters for the qsort hook. */
3083 static bfd_boolean synthetic_relocatable;
3085 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3088 compare_symbols (const void *ap, const void *bp)
3090 const asymbol *a = * (const asymbol **) ap;
3091 const asymbol *b = * (const asymbol **) bp;
3093 /* Section symbols first. */
3094 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3096 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3099 /* then .opd symbols. */
3100 if (strcmp (a->section->name, ".opd") == 0
3101 && strcmp (b->section->name, ".opd") != 0)
3103 if (strcmp (a->section->name, ".opd") != 0
3104 && strcmp (b->section->name, ".opd") == 0)
3107 /* then other code symbols. */
3108 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3109 == (SEC_CODE | SEC_ALLOC)
3110 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3111 != (SEC_CODE | SEC_ALLOC))
3114 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3115 != (SEC_CODE | SEC_ALLOC)
3116 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3117 == (SEC_CODE | SEC_ALLOC))
3120 if (synthetic_relocatable)
3122 if (a->section->id < b->section->id)
3125 if (a->section->id > b->section->id)
3129 if (a->value + a->section->vma < b->value + b->section->vma)
3132 if (a->value + a->section->vma > b->value + b->section->vma)
3135 /* For syms with the same value, prefer strong dynamic global function
3136 syms over other syms. */
3137 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3140 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3143 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3146 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3149 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3152 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3155 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3158 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3164 /* Search SYMS for a symbol of the given VALUE. */
3167 sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
3171 if (id == (unsigned) -1)
3175 mid = (lo + hi) >> 1;
3176 if (syms[mid]->value + syms[mid]->section->vma < value)
3178 else if (syms[mid]->value + syms[mid]->section->vma > value)
3188 mid = (lo + hi) >> 1;
3189 if (syms[mid]->section->id < id)
3191 else if (syms[mid]->section->id > id)
3193 else if (syms[mid]->value < value)
3195 else if (syms[mid]->value > value)
3205 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3207 bfd_vma vma = *(bfd_vma *) ptr;
3208 return ((section->flags & SEC_ALLOC) != 0
3209 && section->vma <= vma
3210 && vma < section->vma + section->size);
3213 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3214 entry syms. Also generate @plt symbols for the glink branch table.
3215 Returns count of synthetic symbols in RET or -1 on error. */
3218 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3219 long static_count, asymbol **static_syms,
3220 long dyn_count, asymbol **dyn_syms,
3227 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3228 asection *opd = NULL;
3229 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3231 int abi = abiversion (abfd);
3237 opd = bfd_get_section_by_name (abfd, ".opd");
3238 if (opd == NULL && abi == 1)
3242 symcount = static_count;
3244 symcount += dyn_count;
3248 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3252 if (!relocatable && static_count != 0 && dyn_count != 0)
3254 /* Use both symbol tables. */
3255 memcpy (syms, static_syms, static_count * sizeof (*syms));
3256 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3258 else if (!relocatable && static_count == 0)
3259 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3261 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3263 synthetic_relocatable = relocatable;
3264 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3266 if (!relocatable && symcount > 1)
3269 /* Trim duplicate syms, since we may have merged the normal and
3270 dynamic symbols. Actually, we only care about syms that have
3271 different values, so trim any with the same value. */
3272 for (i = 1, j = 1; i < symcount; ++i)
3273 if (syms[i - 1]->value + syms[i - 1]->section->vma
3274 != syms[i]->value + syms[i]->section->vma)
3275 syms[j++] = syms[i];
3280 if (strcmp (syms[i]->section->name, ".opd") == 0)
3284 for (; i < symcount; ++i)
3285 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3286 != (SEC_CODE | SEC_ALLOC))
3287 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3291 for (; i < symcount; ++i)
3292 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3296 for (; i < symcount; ++i)
3297 if (strcmp (syms[i]->section->name, ".opd") != 0)
3301 for (; i < symcount; ++i)
3302 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3303 != (SEC_CODE | SEC_ALLOC))
3311 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3316 if (opdsymend == secsymend)
3319 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3320 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3324 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3331 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3335 while (r < opd->relocation + relcount
3336 && r->address < syms[i]->value + opd->vma)
3339 if (r == opd->relocation + relcount)
3342 if (r->address != syms[i]->value + opd->vma)
3345 if (r->howto->type != R_PPC64_ADDR64)
3348 sym = *r->sym_ptr_ptr;
3349 if (!sym_exists_at (syms, opdsymend, symcount,
3350 sym->section->id, sym->value + r->addend))
3353 size += sizeof (asymbol);
3354 size += strlen (syms[i]->name) + 2;
3360 s = *ret = bfd_malloc (size);
3367 names = (char *) (s + count);
3369 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3373 while (r < opd->relocation + relcount
3374 && r->address < syms[i]->value + opd->vma)
3377 if (r == opd->relocation + relcount)
3380 if (r->address != syms[i]->value + opd->vma)
3383 if (r->howto->type != R_PPC64_ADDR64)
3386 sym = *r->sym_ptr_ptr;
3387 if (!sym_exists_at (syms, opdsymend, symcount,
3388 sym->section->id, sym->value + r->addend))
3393 s->flags |= BSF_SYNTHETIC;
3394 s->section = sym->section;
3395 s->value = sym->value + r->addend;
3398 len = strlen (syms[i]->name);
3399 memcpy (names, syms[i]->name, len + 1);
3401 /* Have udata.p point back to the original symbol this
3402 synthetic symbol was derived from. */
3403 s->udata.p = syms[i];
3410 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3411 bfd_byte *contents = NULL;
3414 bfd_vma glink_vma = 0, resolv_vma = 0;
3415 asection *dynamic, *glink = NULL, *relplt = NULL;
3418 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3420 free_contents_and_exit_err:
3422 free_contents_and_exit:
3429 for (i = secsymend; i < opdsymend; ++i)
3433 /* Ignore bogus symbols. */
3434 if (syms[i]->value > opd->size - 8)
3437 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3438 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3441 size += sizeof (asymbol);
3442 size += strlen (syms[i]->name) + 2;
3446 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3448 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3450 bfd_byte *dynbuf, *extdyn, *extdynend;
3452 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3454 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3455 goto free_contents_and_exit_err;
3457 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3458 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3461 extdynend = extdyn + dynamic->size;
3462 for (; extdyn < extdynend; extdyn += extdynsize)
3464 Elf_Internal_Dyn dyn;
3465 (*swap_dyn_in) (abfd, extdyn, &dyn);
3467 if (dyn.d_tag == DT_NULL)
3470 if (dyn.d_tag == DT_PPC64_GLINK)
3472 /* The first glink stub starts at offset 32; see
3473 comment in ppc64_elf_finish_dynamic_sections. */
3474 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3475 /* The .glink section usually does not survive the final
3476 link; search for the section (usually .text) where the
3477 glink stubs now reside. */
3478 glink = bfd_sections_find_if (abfd, section_covers_vma,
3489 /* Determine __glink trampoline by reading the relative branch
3490 from the first glink stub. */
3492 unsigned int off = 0;
3494 while (bfd_get_section_contents (abfd, glink, buf,
3495 glink_vma + off - glink->vma, 4))
3497 unsigned int insn = bfd_get_32 (abfd, buf);
3499 if ((insn & ~0x3fffffc) == 0)
3501 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3510 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3512 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3515 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3516 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3517 goto free_contents_and_exit_err;
3519 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3520 size += plt_count * sizeof (asymbol);
3522 p = relplt->relocation;
3523 for (i = 0; i < plt_count; i++, p++)
3525 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3527 size += sizeof ("+0x") - 1 + 16;
3533 goto free_contents_and_exit;
3534 s = *ret = bfd_malloc (size);
3536 goto free_contents_and_exit_err;
3538 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3540 for (i = secsymend; i < opdsymend; ++i)
3544 if (syms[i]->value > opd->size - 8)
3547 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3548 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3552 asection *sec = abfd->sections;
3559 long mid = (lo + hi) >> 1;
3560 if (syms[mid]->section->vma < ent)
3562 else if (syms[mid]->section->vma > ent)
3566 sec = syms[mid]->section;
3571 if (lo >= hi && lo > codesecsym)
3572 sec = syms[lo - 1]->section;
3574 for (; sec != NULL; sec = sec->next)
3578 /* SEC_LOAD may not be set if SEC is from a separate debug
3580 if ((sec->flags & SEC_ALLOC) == 0)
3582 if ((sec->flags & SEC_CODE) != 0)
3585 s->flags |= BSF_SYNTHETIC;
3586 s->value = ent - s->section->vma;
3589 len = strlen (syms[i]->name);
3590 memcpy (names, syms[i]->name, len + 1);
3592 /* Have udata.p point back to the original symbol this
3593 synthetic symbol was derived from. */
3594 s->udata.p = syms[i];
3600 if (glink != NULL && relplt != NULL)
3604 /* Add a symbol for the main glink trampoline. */
3605 memset (s, 0, sizeof *s);
3607 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3609 s->value = resolv_vma - glink->vma;
3611 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3612 names += sizeof ("__glink_PLTresolve");
3617 /* FIXME: It would be very much nicer to put sym@plt on the
3618 stub rather than on the glink branch table entry. The
3619 objdump disassembler would then use a sensible symbol
3620 name on plt calls. The difficulty in doing so is
3621 a) finding the stubs, and,
3622 b) matching stubs against plt entries, and,
3623 c) there can be multiple stubs for a given plt entry.
3625 Solving (a) could be done by code scanning, but older
3626 ppc64 binaries used different stubs to current code.
3627 (b) is the tricky one since you need to known the toc
3628 pointer for at least one function that uses a pic stub to
3629 be able to calculate the plt address referenced.
3630 (c) means gdb would need to set multiple breakpoints (or
3631 find the glink branch itself) when setting breakpoints
3632 for pending shared library loads. */
3633 p = relplt->relocation;
3634 for (i = 0; i < plt_count; i++, p++)
3638 *s = **p->sym_ptr_ptr;
3639 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3640 we are defining a symbol, ensure one of them is set. */
3641 if ((s->flags & BSF_LOCAL) == 0)
3642 s->flags |= BSF_GLOBAL;
3643 s->flags |= BSF_SYNTHETIC;
3645 s->value = glink_vma - glink->vma;
3648 len = strlen ((*p->sym_ptr_ptr)->name);
3649 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3653 memcpy (names, "+0x", sizeof ("+0x") - 1);
3654 names += sizeof ("+0x") - 1;
3655 bfd_sprintf_vma (abfd, names, p->addend);
3656 names += strlen (names);
3658 memcpy (names, "@plt", sizeof ("@plt"));
3659 names += sizeof ("@plt");
3679 /* The following functions are specific to the ELF linker, while
3680 functions above are used generally. Those named ppc64_elf_* are
3681 called by the main ELF linker code. They appear in this file more
3682 or less in the order in which they are called. eg.
3683 ppc64_elf_check_relocs is called early in the link process,
3684 ppc64_elf_finish_dynamic_sections is one of the last functions
3687 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3688 functions have both a function code symbol and a function descriptor
3689 symbol. A call to foo in a relocatable object file looks like:
3696 The function definition in another object file might be:
3700 . .quad .TOC.@tocbase
3706 When the linker resolves the call during a static link, the branch
3707 unsurprisingly just goes to .foo and the .opd information is unused.
3708 If the function definition is in a shared library, things are a little
3709 different: The call goes via a plt call stub, the opd information gets
3710 copied to the plt, and the linker patches the nop.
3718 . std 2,40(1) # in practice, the call stub
3719 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3720 . addi 11,11,Lfoo@toc@l # this is the general idea
3728 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3730 The "reloc ()" notation is supposed to indicate that the linker emits
3731 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3734 What are the difficulties here? Well, firstly, the relocations
3735 examined by the linker in check_relocs are against the function code
3736 sym .foo, while the dynamic relocation in the plt is emitted against
3737 the function descriptor symbol, foo. Somewhere along the line, we need
3738 to carefully copy dynamic link information from one symbol to the other.
3739 Secondly, the generic part of the elf linker will make .foo a dynamic
3740 symbol as is normal for most other backends. We need foo dynamic
3741 instead, at least for an application final link. However, when
3742 creating a shared library containing foo, we need to have both symbols
3743 dynamic so that references to .foo are satisfied during the early
3744 stages of linking. Otherwise the linker might decide to pull in a
3745 definition from some other object, eg. a static library.
3747 Update: As of August 2004, we support a new convention. Function
3748 calls may use the function descriptor symbol, ie. "bl foo". This
3749 behaves exactly as "bl .foo". */
3751 /* Of those relocs that might be copied as dynamic relocs, this function
3752 selects those that must be copied when linking a shared library,
3753 even when the symbol is local. */
3756 must_be_dyn_reloc (struct bfd_link_info *info,
3757 enum elf_ppc64_reloc_type r_type)
3769 case R_PPC64_TPREL16:
3770 case R_PPC64_TPREL16_LO:
3771 case R_PPC64_TPREL16_HI:
3772 case R_PPC64_TPREL16_HA:
3773 case R_PPC64_TPREL16_DS:
3774 case R_PPC64_TPREL16_LO_DS:
3775 case R_PPC64_TPREL16_HIGH:
3776 case R_PPC64_TPREL16_HIGHA:
3777 case R_PPC64_TPREL16_HIGHER:
3778 case R_PPC64_TPREL16_HIGHERA:
3779 case R_PPC64_TPREL16_HIGHEST:
3780 case R_PPC64_TPREL16_HIGHESTA:
3781 case R_PPC64_TPREL64:
3782 return !bfd_link_executable (info);
3786 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3787 copying dynamic variables from a shared lib into an app's dynbss
3788 section, and instead use a dynamic relocation to point into the
3789 shared lib. With code that gcc generates, it's vital that this be
3790 enabled; In the PowerPC64 ABI, the address of a function is actually
3791 the address of a function descriptor, which resides in the .opd
3792 section. gcc uses the descriptor directly rather than going via the
3793 GOT as some other ABI's do, which means that initialized function
3794 pointers must reference the descriptor. Thus, a function pointer
3795 initialized to the address of a function in a shared library will
3796 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3797 redefines the function descriptor symbol to point to the copy. This
3798 presents a problem as a plt entry for that function is also
3799 initialized from the function descriptor symbol and the copy reloc
3800 may not be initialized first. */
3801 #define ELIMINATE_COPY_RELOCS 1
3803 /* Section name for stubs is the associated section name plus this
3805 #define STUB_SUFFIX ".stub"
3808 ppc_stub_long_branch:
3809 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3810 destination, but a 24 bit branch in a stub section will reach.
3813 ppc_stub_plt_branch:
3814 Similar to the above, but a 24 bit branch in the stub section won't
3815 reach its destination.
3816 . addis %r11,%r2,xxx@toc@ha
3817 . ld %r12,xxx@toc@l(%r11)
3822 Used to call a function in a shared library. If it so happens that
3823 the plt entry referenced crosses a 64k boundary, then an extra
3824 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3826 . addis %r11,%r2,xxx@toc@ha
3827 . ld %r12,xxx+0@toc@l(%r11)
3829 . ld %r2,xxx+8@toc@l(%r11)
3830 . ld %r11,xxx+16@toc@l(%r11)
3833 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3834 code to adjust the value and save r2 to support multiple toc sections.
3835 A ppc_stub_long_branch with an r2 offset looks like:
3837 . addis %r2,%r2,off@ha
3838 . addi %r2,%r2,off@l
3841 A ppc_stub_plt_branch with an r2 offset looks like:
3843 . addis %r11,%r2,xxx@toc@ha
3844 . ld %r12,xxx@toc@l(%r11)
3845 . addis %r2,%r2,off@ha
3846 . addi %r2,%r2,off@l
3850 In cases where the "addis" instruction would add zero, the "addis" is
3851 omitted and following instructions modified slightly in some cases.
3854 enum ppc_stub_type {
3856 ppc_stub_long_branch,
3857 ppc_stub_long_branch_r2off,
3858 ppc_stub_plt_branch,
3859 ppc_stub_plt_branch_r2off,
3861 ppc_stub_plt_call_r2save,
3862 ppc_stub_global_entry,
3866 /* Information on stub grouping. */
3869 /* The stub section. */
3871 /* This is the section to which stubs in the group will be attached. */
3874 struct map_stub *next;
3875 /* Whether to emit a copy of register save/restore functions in this
3880 struct ppc_stub_hash_entry {
3882 /* Base hash table entry structure. */
3883 struct bfd_hash_entry root;
3885 enum ppc_stub_type stub_type;
3887 /* Group information. */
3888 struct map_stub *group;
3890 /* Offset within stub_sec of the beginning of this stub. */
3891 bfd_vma stub_offset;
3893 /* Given the symbol's value and its section we can determine its final
3894 value when building the stubs (so the stub knows where to jump. */
3895 bfd_vma target_value;
3896 asection *target_section;
3898 /* The symbol table entry, if any, that this was derived from. */
3899 struct ppc_link_hash_entry *h;
3900 struct plt_entry *plt_ent;
3902 /* Symbol st_other. */
3903 unsigned char other;
3906 struct ppc_branch_hash_entry {
3908 /* Base hash table entry structure. */
3909 struct bfd_hash_entry root;
3911 /* Offset within branch lookup table. */
3912 unsigned int offset;
3914 /* Generation marker. */
3918 /* Used to track dynamic relocations for local symbols. */
3919 struct ppc_dyn_relocs
3921 struct ppc_dyn_relocs *next;
3923 /* The input section of the reloc. */
3926 /* Total number of relocs copied for the input section. */
3927 unsigned int count : 31;
3929 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3930 unsigned int ifunc : 1;
3933 struct ppc_link_hash_entry
3935 struct elf_link_hash_entry elf;
3938 /* A pointer to the most recently used stub hash entry against this
3940 struct ppc_stub_hash_entry *stub_cache;
3942 /* A pointer to the next symbol starting with a '.' */
3943 struct ppc_link_hash_entry *next_dot_sym;
3946 /* Track dynamic relocs copied for this symbol. */
3947 struct elf_dyn_relocs *dyn_relocs;
3949 /* Link between function code and descriptor symbols. */
3950 struct ppc_link_hash_entry *oh;
3952 /* Flag function code and descriptor symbols. */
3953 unsigned int is_func:1;
3954 unsigned int is_func_descriptor:1;
3955 unsigned int fake:1;
3957 /* Whether global opd/toc sym has been adjusted or not.
3958 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3959 should be set for all globals defined in any opd/toc section. */
3960 unsigned int adjust_done:1;
3962 /* Set if we twiddled this symbol to weak at some stage. */
3963 unsigned int was_undefined:1;
3965 /* Set if this is an out-of-line register save/restore function,
3966 with non-standard calling convention. */
3967 unsigned int save_res:1;
3969 /* Contexts in which symbol is used in the GOT (or TOC).
3970 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3971 corresponding relocs are encountered during check_relocs.
3972 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3973 indicate the corresponding GOT entry type is not needed.
3974 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3975 a TPREL one. We use a separate flag rather than setting TPREL
3976 just for convenience in distinguishing the two cases. */
3977 #define TLS_GD 1 /* GD reloc. */
3978 #define TLS_LD 2 /* LD reloc. */
3979 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3980 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3981 #define TLS_TLS 16 /* Any TLS reloc. */
3982 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3983 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3984 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3985 unsigned char tls_mask;
3988 /* ppc64 ELF linker hash table. */
3990 struct ppc_link_hash_table
3992 struct elf_link_hash_table elf;
3994 /* The stub hash table. */
3995 struct bfd_hash_table stub_hash_table;
3997 /* Another hash table for plt_branch stubs. */
3998 struct bfd_hash_table branch_hash_table;
4000 /* Hash table for function prologue tocsave. */
4001 htab_t tocsave_htab;
4003 /* Various options and other info passed from the linker. */
4004 struct ppc64_elf_params *params;
4006 /* The size of sec_info below. */
4007 unsigned int sec_info_arr_size;
4009 /* Per-section array of extra section info. Done this way rather
4010 than as part of ppc64_elf_section_data so we have the info for
4011 non-ppc64 sections. */
4014 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4019 /* The section group that this section belongs to. */
4020 struct map_stub *group;
4021 /* A temp section list pointer. */
4026 /* Linked list of groups. */
4027 struct map_stub *group;
4029 /* Temp used when calculating TOC pointers. */
4032 asection *toc_first_sec;
4034 /* Used when adding symbols. */
4035 struct ppc_link_hash_entry *dot_syms;
4037 /* Shortcuts to get to dynamic linker sections. */
4044 asection *glink_eh_frame;
4046 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4047 struct ppc_link_hash_entry *tls_get_addr;
4048 struct ppc_link_hash_entry *tls_get_addr_fd;
4050 /* The size of reliplt used by got entry relocs. */
4051 bfd_size_type got_reli_size;
4054 unsigned long stub_count[ppc_stub_global_entry];
4056 /* Number of stubs against global syms. */
4057 unsigned long stub_globals;
4059 /* Set if we're linking code with function descriptors. */
4060 unsigned int opd_abi:1;
4062 /* Support for multiple toc sections. */
4063 unsigned int do_multi_toc:1;
4064 unsigned int multi_toc_needed:1;
4065 unsigned int second_toc_pass:1;
4066 unsigned int do_toc_opt:1;
4069 unsigned int stub_error:1;
4071 /* Temp used by ppc64_elf_before_check_relocs. */
4072 unsigned int twiddled_syms:1;
4074 /* Incremented every time we size stubs. */
4075 unsigned int stub_iteration;
4077 /* Small local sym cache. */
4078 struct sym_cache sym_cache;
4081 /* Rename some of the generic section flags to better document how they
4084 /* Nonzero if this section has TLS related relocations. */
4085 #define has_tls_reloc sec_flg0
4087 /* Nonzero if this section has a call to __tls_get_addr. */
4088 #define has_tls_get_addr_call sec_flg1
4090 /* Nonzero if this section has any toc or got relocs. */
4091 #define has_toc_reloc sec_flg2
4093 /* Nonzero if this section has a call to another section that uses
4095 #define makes_toc_func_call sec_flg3
4097 /* Recursion protection when determining above flag. */
4098 #define call_check_in_progress sec_flg4
4099 #define call_check_done sec_flg5
4101 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4103 #define ppc_hash_table(p) \
4104 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4105 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4107 #define ppc_stub_hash_lookup(table, string, create, copy) \
4108 ((struct ppc_stub_hash_entry *) \
4109 bfd_hash_lookup ((table), (string), (create), (copy)))
4111 #define ppc_branch_hash_lookup(table, string, create, copy) \
4112 ((struct ppc_branch_hash_entry *) \
4113 bfd_hash_lookup ((table), (string), (create), (copy)))
4115 /* Create an entry in the stub hash table. */
4117 static struct bfd_hash_entry *
4118 stub_hash_newfunc (struct bfd_hash_entry *entry,
4119 struct bfd_hash_table *table,
4122 /* Allocate the structure if it has not already been allocated by a
4126 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4131 /* Call the allocation method of the superclass. */
4132 entry = bfd_hash_newfunc (entry, table, string);
4135 struct ppc_stub_hash_entry *eh;
4137 /* Initialize the local fields. */
4138 eh = (struct ppc_stub_hash_entry *) entry;
4139 eh->stub_type = ppc_stub_none;
4141 eh->stub_offset = 0;
4142 eh->target_value = 0;
4143 eh->target_section = NULL;
4152 /* Create an entry in the branch hash table. */
4154 static struct bfd_hash_entry *
4155 branch_hash_newfunc (struct bfd_hash_entry *entry,
4156 struct bfd_hash_table *table,
4159 /* Allocate the structure if it has not already been allocated by a
4163 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4168 /* Call the allocation method of the superclass. */
4169 entry = bfd_hash_newfunc (entry, table, string);
4172 struct ppc_branch_hash_entry *eh;
4174 /* Initialize the local fields. */
4175 eh = (struct ppc_branch_hash_entry *) entry;
4183 /* Create an entry in a ppc64 ELF linker hash table. */
4185 static struct bfd_hash_entry *
4186 link_hash_newfunc (struct bfd_hash_entry *entry,
4187 struct bfd_hash_table *table,
4190 /* Allocate the structure if it has not already been allocated by a
4194 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4199 /* Call the allocation method of the superclass. */
4200 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4203 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4205 memset (&eh->u.stub_cache, 0,
4206 (sizeof (struct ppc_link_hash_entry)
4207 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4209 /* When making function calls, old ABI code references function entry
4210 points (dot symbols), while new ABI code references the function
4211 descriptor symbol. We need to make any combination of reference and
4212 definition work together, without breaking archive linking.
4214 For a defined function "foo" and an undefined call to "bar":
4215 An old object defines "foo" and ".foo", references ".bar" (possibly
4217 A new object defines "foo" and references "bar".
4219 A new object thus has no problem with its undefined symbols being
4220 satisfied by definitions in an old object. On the other hand, the
4221 old object won't have ".bar" satisfied by a new object.
4223 Keep a list of newly added dot-symbols. */
4225 if (string[0] == '.')
4227 struct ppc_link_hash_table *htab;
4229 htab = (struct ppc_link_hash_table *) table;
4230 eh->u.next_dot_sym = htab->dot_syms;
4231 htab->dot_syms = eh;
4238 struct tocsave_entry {
4244 tocsave_htab_hash (const void *p)
4246 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4247 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4251 tocsave_htab_eq (const void *p1, const void *p2)
4253 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4254 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4255 return e1->sec == e2->sec && e1->offset == e2->offset;
4258 /* Destroy a ppc64 ELF linker hash table. */
4261 ppc64_elf_link_hash_table_free (bfd *obfd)
4263 struct ppc_link_hash_table *htab;
4265 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4266 if (htab->tocsave_htab)
4267 htab_delete (htab->tocsave_htab);
4268 bfd_hash_table_free (&htab->branch_hash_table);
4269 bfd_hash_table_free (&htab->stub_hash_table);
4270 _bfd_elf_link_hash_table_free (obfd);
4273 /* Create a ppc64 ELF linker hash table. */
4275 static struct bfd_link_hash_table *
4276 ppc64_elf_link_hash_table_create (bfd *abfd)
4278 struct ppc_link_hash_table *htab;
4279 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4281 htab = bfd_zmalloc (amt);
4285 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4286 sizeof (struct ppc_link_hash_entry),
4293 /* Init the stub hash table too. */
4294 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4295 sizeof (struct ppc_stub_hash_entry)))
4297 _bfd_elf_link_hash_table_free (abfd);
4301 /* And the branch hash table. */
4302 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4303 sizeof (struct ppc_branch_hash_entry)))
4305 bfd_hash_table_free (&htab->stub_hash_table);
4306 _bfd_elf_link_hash_table_free (abfd);
4310 htab->tocsave_htab = htab_try_create (1024,
4314 if (htab->tocsave_htab == NULL)
4316 ppc64_elf_link_hash_table_free (abfd);
4319 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4321 /* Initializing two fields of the union is just cosmetic. We really
4322 only care about glist, but when compiled on a 32-bit host the
4323 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4324 debugger inspection of these fields look nicer. */
4325 htab->elf.init_got_refcount.refcount = 0;
4326 htab->elf.init_got_refcount.glist = NULL;
4327 htab->elf.init_plt_refcount.refcount = 0;
4328 htab->elf.init_plt_refcount.glist = NULL;
4329 htab->elf.init_got_offset.offset = 0;
4330 htab->elf.init_got_offset.glist = NULL;
4331 htab->elf.init_plt_offset.offset = 0;
4332 htab->elf.init_plt_offset.glist = NULL;
4334 return &htab->elf.root;
4337 /* Create sections for linker generated code. */
4340 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4342 struct ppc_link_hash_table *htab;
4345 htab = ppc_hash_table (info);
4347 /* Create .sfpr for code to save and restore fp regs. */
4348 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4349 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4350 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4352 if (htab->sfpr == NULL
4353 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4356 /* Create .glink for lazy dynamic linking support. */
4357 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4359 if (htab->glink == NULL
4360 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4363 if (!info->no_ld_generated_unwind_info)
4365 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4366 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4367 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4370 if (htab->glink_eh_frame == NULL
4371 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4375 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4376 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4377 if (htab->elf.iplt == NULL
4378 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4381 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4382 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4384 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4385 if (htab->elf.irelplt == NULL
4386 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4389 /* Create branch lookup table for plt_branch stubs. */
4390 flags = (SEC_ALLOC | SEC_LOAD
4391 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4392 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4394 if (htab->brlt == NULL
4395 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4398 if (!bfd_link_pic (info))
4401 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4402 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4403 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4406 if (htab->relbrlt == NULL
4407 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4413 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4416 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4417 struct ppc64_elf_params *params)
4419 struct ppc_link_hash_table *htab;
4421 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4423 /* Always hook our dynamic sections into the first bfd, which is the
4424 linker created stub bfd. This ensures that the GOT header is at
4425 the start of the output TOC section. */
4426 htab = ppc_hash_table (info);
4429 htab->elf.dynobj = params->stub_bfd;
4430 htab->params = params;
4432 if (bfd_link_relocatable (info))
4435 return create_linkage_sections (htab->elf.dynobj, info);
4438 /* Build a name for an entry in the stub hash table. */
4441 ppc_stub_name (const asection *input_section,
4442 const asection *sym_sec,
4443 const struct ppc_link_hash_entry *h,
4444 const Elf_Internal_Rela *rel)
4449 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4450 offsets from a sym as a branch target? In fact, we could
4451 probably assume the addend is always zero. */
4452 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4456 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4457 stub_name = bfd_malloc (len);
4458 if (stub_name == NULL)
4461 len = sprintf (stub_name, "%08x.%s+%x",
4462 input_section->id & 0xffffffff,
4463 h->elf.root.root.string,
4464 (int) rel->r_addend & 0xffffffff);
4468 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4469 stub_name = bfd_malloc (len);
4470 if (stub_name == NULL)
4473 len = sprintf (stub_name, "%08x.%x:%x+%x",
4474 input_section->id & 0xffffffff,
4475 sym_sec->id & 0xffffffff,
4476 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4477 (int) rel->r_addend & 0xffffffff);
4479 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4480 stub_name[len - 2] = 0;
4484 /* Look up an entry in the stub hash. Stub entries are cached because
4485 creating the stub name takes a bit of time. */
4487 static struct ppc_stub_hash_entry *
4488 ppc_get_stub_entry (const asection *input_section,
4489 const asection *sym_sec,
4490 struct ppc_link_hash_entry *h,
4491 const Elf_Internal_Rela *rel,
4492 struct ppc_link_hash_table *htab)
4494 struct ppc_stub_hash_entry *stub_entry;
4495 struct map_stub *group;
4497 /* If this input section is part of a group of sections sharing one
4498 stub section, then use the id of the first section in the group.
4499 Stub names need to include a section id, as there may well be
4500 more than one stub used to reach say, printf, and we need to
4501 distinguish between them. */
4502 group = htab->sec_info[input_section->id].u.group;
4504 if (h != NULL && h->u.stub_cache != NULL
4505 && h->u.stub_cache->h == h
4506 && h->u.stub_cache->group == group)
4508 stub_entry = h->u.stub_cache;
4514 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4515 if (stub_name == NULL)
4518 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4519 stub_name, FALSE, FALSE);
4521 h->u.stub_cache = stub_entry;
4529 /* Add a new stub entry to the stub hash. Not all fields of the new
4530 stub entry are initialised. */
4532 static struct ppc_stub_hash_entry *
4533 ppc_add_stub (const char *stub_name,
4535 struct bfd_link_info *info)
4537 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4538 struct map_stub *group;
4541 struct ppc_stub_hash_entry *stub_entry;
4543 group = htab->sec_info[section->id].u.group;
4544 link_sec = group->link_sec;
4545 stub_sec = group->stub_sec;
4546 if (stub_sec == NULL)
4552 namelen = strlen (link_sec->name);
4553 len = namelen + sizeof (STUB_SUFFIX);
4554 s_name = bfd_alloc (htab->params->stub_bfd, len);
4558 memcpy (s_name, link_sec->name, namelen);
4559 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4560 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4561 if (stub_sec == NULL)
4563 group->stub_sec = stub_sec;
4566 /* Enter this entry into the linker stub hash table. */
4567 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4569 if (stub_entry == NULL)
4571 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4572 section->owner, stub_name);
4576 stub_entry->group = group;
4577 stub_entry->stub_offset = 0;
4581 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4582 not already done. */
4585 create_got_section (bfd *abfd, struct bfd_link_info *info)
4587 asection *got, *relgot;
4589 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4591 if (!is_ppc64_elf (abfd))
4597 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4600 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4601 | SEC_LINKER_CREATED);
4603 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4605 || !bfd_set_section_alignment (abfd, got, 3))
4608 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4609 flags | SEC_READONLY);
4611 || ! bfd_set_section_alignment (abfd, relgot, 3))
4614 ppc64_elf_tdata (abfd)->got = got;
4615 ppc64_elf_tdata (abfd)->relgot = relgot;
4619 /* Create the dynamic sections, and set up shortcuts. */
4622 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4624 struct ppc_link_hash_table *htab;
4626 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4629 htab = ppc_hash_table (info);
4633 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4634 if (!bfd_link_pic (info))
4635 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4637 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4638 || (!bfd_link_pic (info) && !htab->relbss))
4644 /* Follow indirect and warning symbol links. */
4646 static inline struct bfd_link_hash_entry *
4647 follow_link (struct bfd_link_hash_entry *h)
4649 while (h->type == bfd_link_hash_indirect
4650 || h->type == bfd_link_hash_warning)
4655 static inline struct elf_link_hash_entry *
4656 elf_follow_link (struct elf_link_hash_entry *h)
4658 return (struct elf_link_hash_entry *) follow_link (&h->root);
4661 static inline struct ppc_link_hash_entry *
4662 ppc_follow_link (struct ppc_link_hash_entry *h)
4664 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4667 /* Merge PLT info on FROM with that on TO. */
4670 move_plt_plist (struct ppc_link_hash_entry *from,
4671 struct ppc_link_hash_entry *to)
4673 if (from->elf.plt.plist != NULL)
4675 if (to->elf.plt.plist != NULL)
4677 struct plt_entry **entp;
4678 struct plt_entry *ent;
4680 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4682 struct plt_entry *dent;
4684 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4685 if (dent->addend == ent->addend)
4687 dent->plt.refcount += ent->plt.refcount;
4694 *entp = to->elf.plt.plist;
4697 to->elf.plt.plist = from->elf.plt.plist;
4698 from->elf.plt.plist = NULL;
4702 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4705 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4706 struct elf_link_hash_entry *dir,
4707 struct elf_link_hash_entry *ind)
4709 struct ppc_link_hash_entry *edir, *eind;
4711 edir = (struct ppc_link_hash_entry *) dir;
4712 eind = (struct ppc_link_hash_entry *) ind;
4714 edir->is_func |= eind->is_func;
4715 edir->is_func_descriptor |= eind->is_func_descriptor;
4716 edir->tls_mask |= eind->tls_mask;
4717 if (eind->oh != NULL)
4718 edir->oh = ppc_follow_link (eind->oh);
4720 /* If called to transfer flags for a weakdef during processing
4721 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4722 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4723 if (!(ELIMINATE_COPY_RELOCS
4724 && eind->elf.root.type != bfd_link_hash_indirect
4725 && edir->elf.dynamic_adjusted))
4726 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4728 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4729 edir->elf.ref_regular |= eind->elf.ref_regular;
4730 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4731 edir->elf.needs_plt |= eind->elf.needs_plt;
4732 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4734 /* Copy over any dynamic relocs we may have on the indirect sym. */
4735 if (eind->dyn_relocs != NULL)
4737 if (edir->dyn_relocs != NULL)
4739 struct elf_dyn_relocs **pp;
4740 struct elf_dyn_relocs *p;
4742 /* Add reloc counts against the indirect sym to the direct sym
4743 list. Merge any entries against the same section. */
4744 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4746 struct elf_dyn_relocs *q;
4748 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4749 if (q->sec == p->sec)
4751 q->pc_count += p->pc_count;
4752 q->count += p->count;
4759 *pp = edir->dyn_relocs;
4762 edir->dyn_relocs = eind->dyn_relocs;
4763 eind->dyn_relocs = NULL;
4766 /* If we were called to copy over info for a weak sym, that's all.
4767 You might think dyn_relocs need not be copied over; After all,
4768 both syms will be dynamic or both non-dynamic so we're just
4769 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4770 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4771 dyn_relocs in read-only sections, and it does so on what is the
4773 if (eind->elf.root.type != bfd_link_hash_indirect)
4776 /* Copy over got entries that we may have already seen to the
4777 symbol which just became indirect. */
4778 if (eind->elf.got.glist != NULL)
4780 if (edir->elf.got.glist != NULL)
4782 struct got_entry **entp;
4783 struct got_entry *ent;
4785 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4787 struct got_entry *dent;
4789 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4790 if (dent->addend == ent->addend
4791 && dent->owner == ent->owner
4792 && dent->tls_type == ent->tls_type)
4794 dent->got.refcount += ent->got.refcount;
4801 *entp = edir->elf.got.glist;
4804 edir->elf.got.glist = eind->elf.got.glist;
4805 eind->elf.got.glist = NULL;
4808 /* And plt entries. */
4809 move_plt_plist (eind, edir);
4811 if (eind->elf.dynindx != -1)
4813 if (edir->elf.dynindx != -1)
4814 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4815 edir->elf.dynstr_index);
4816 edir->elf.dynindx = eind->elf.dynindx;
4817 edir->elf.dynstr_index = eind->elf.dynstr_index;
4818 eind->elf.dynindx = -1;
4819 eind->elf.dynstr_index = 0;
4823 /* Find the function descriptor hash entry from the given function code
4824 hash entry FH. Link the entries via their OH fields. */
4826 static struct ppc_link_hash_entry *
4827 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4829 struct ppc_link_hash_entry *fdh = fh->oh;
4833 const char *fd_name = fh->elf.root.root.string + 1;
4835 fdh = (struct ppc_link_hash_entry *)
4836 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4840 fdh->is_func_descriptor = 1;
4846 return ppc_follow_link (fdh);
4849 /* Make a fake function descriptor sym for the code sym FH. */
4851 static struct ppc_link_hash_entry *
4852 make_fdh (struct bfd_link_info *info,
4853 struct ppc_link_hash_entry *fh)
4857 struct bfd_link_hash_entry *bh;
4858 struct ppc_link_hash_entry *fdh;
4860 abfd = fh->elf.root.u.undef.abfd;
4861 newsym = bfd_make_empty_symbol (abfd);
4862 newsym->name = fh->elf.root.root.string + 1;
4863 newsym->section = bfd_und_section_ptr;
4865 newsym->flags = BSF_WEAK;
4868 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4869 newsym->flags, newsym->section,
4870 newsym->value, NULL, FALSE, FALSE,
4874 fdh = (struct ppc_link_hash_entry *) bh;
4875 fdh->elf.non_elf = 0;
4877 fdh->is_func_descriptor = 1;
4884 /* Fix function descriptor symbols defined in .opd sections to be
4888 ppc64_elf_add_symbol_hook (bfd *ibfd,
4889 struct bfd_link_info *info,
4890 Elf_Internal_Sym *isym,
4892 flagword *flags ATTRIBUTE_UNUSED,
4896 if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4897 || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4898 && (ibfd->flags & DYNAMIC) == 0
4899 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4900 elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
4903 && strcmp ((*sec)->name, ".opd") == 0)
4907 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4908 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4909 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4911 /* If the symbol is a function defined in .opd, and the function
4912 code is in a discarded group, let it appear to be undefined. */
4913 if (!bfd_link_relocatable (info)
4914 && (*sec)->reloc_count != 0
4915 && opd_entry_value (*sec, *value, &code_sec, NULL,
4916 FALSE) != (bfd_vma) -1
4917 && discarded_section (code_sec))
4919 *sec = bfd_und_section_ptr;
4920 isym->st_shndx = SHN_UNDEF;
4923 else if (*sec != NULL
4924 && strcmp ((*sec)->name, ".toc") == 0
4925 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4927 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4929 htab->params->object_in_toc = 1;
4932 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4934 if (abiversion (ibfd) == 0)
4935 set_abiversion (ibfd, 2);
4936 else if (abiversion (ibfd) == 1)
4938 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4939 " for ABI version 1\n"), name);
4940 bfd_set_error (bfd_error_bad_value);
4948 /* Merge non-visibility st_other attributes: local entry point. */
4951 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4952 const Elf_Internal_Sym *isym,
4953 bfd_boolean definition,
4954 bfd_boolean dynamic)
4956 if (definition && !dynamic)
4957 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4958 | ELF_ST_VISIBILITY (h->other));
4961 /* This function makes an old ABI object reference to ".bar" cause the
4962 inclusion of a new ABI object archive that defines "bar".
4963 NAME is a symbol defined in an archive. Return a symbol in the hash
4964 table that might be satisfied by the archive symbols. */
4966 static struct elf_link_hash_entry *
4967 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4968 struct bfd_link_info *info,
4971 struct elf_link_hash_entry *h;
4975 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4977 /* Don't return this sym if it is a fake function descriptor
4978 created by add_symbol_adjust. */
4979 && !(h->root.type == bfd_link_hash_undefweak
4980 && ((struct ppc_link_hash_entry *) h)->fake))
4986 len = strlen (name);
4987 dot_name = bfd_alloc (abfd, len + 2);
4988 if (dot_name == NULL)
4989 return (struct elf_link_hash_entry *) 0 - 1;
4991 memcpy (dot_name + 1, name, len + 1);
4992 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4993 bfd_release (abfd, dot_name);
4997 /* This function satisfies all old ABI object references to ".bar" if a
4998 new ABI object defines "bar". Well, at least, undefined dot symbols
4999 are made weak. This stops later archive searches from including an
5000 object if we already have a function descriptor definition. It also
5001 prevents the linker complaining about undefined symbols.
5002 We also check and correct mismatched symbol visibility here. The
5003 most restrictive visibility of the function descriptor and the
5004 function entry symbol is used. */
5007 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5009 struct ppc_link_hash_table *htab;
5010 struct ppc_link_hash_entry *fdh;
5012 if (eh->elf.root.type == bfd_link_hash_indirect)
5015 if (eh->elf.root.type == bfd_link_hash_warning)
5016 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5018 if (eh->elf.root.root.string[0] != '.')
5021 htab = ppc_hash_table (info);
5025 fdh = lookup_fdh (eh, htab);
5028 if (!bfd_link_relocatable (info)
5029 && (eh->elf.root.type == bfd_link_hash_undefined
5030 || eh->elf.root.type == bfd_link_hash_undefweak)
5031 && eh->elf.ref_regular)
5033 /* Make an undefweak function descriptor sym, which is enough to
5034 pull in an --as-needed shared lib, but won't cause link
5035 errors. Archives are handled elsewhere. */
5036 fdh = make_fdh (info, eh);
5039 fdh->elf.ref_regular = 1;
5044 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5045 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5046 if (entry_vis < descr_vis)
5047 fdh->elf.other += entry_vis - descr_vis;
5048 else if (entry_vis > descr_vis)
5049 eh->elf.other += descr_vis - entry_vis;
5051 if ((fdh->elf.root.type == bfd_link_hash_defined
5052 || fdh->elf.root.type == bfd_link_hash_defweak)
5053 && eh->elf.root.type == bfd_link_hash_undefined)
5055 eh->elf.root.type = bfd_link_hash_undefweak;
5056 eh->was_undefined = 1;
5057 htab->twiddled_syms = 1;
5064 /* Set up opd section info and abiversion for IBFD, and process list
5065 of dot-symbols we made in link_hash_newfunc. */
5068 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5070 struct ppc_link_hash_table *htab;
5071 struct ppc_link_hash_entry **p, *eh;
5072 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5074 if (opd != NULL && opd->size != 0)
5076 if (abiversion (ibfd) == 0)
5077 set_abiversion (ibfd, 1);
5078 else if (abiversion (ibfd) == 2)
5080 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5082 ibfd, abiversion (ibfd));
5083 bfd_set_error (bfd_error_bad_value);
5087 if ((ibfd->flags & DYNAMIC) == 0
5088 && (opd->flags & SEC_RELOC) != 0
5089 && opd->reloc_count != 0
5090 && !bfd_is_abs_section (opd->output_section))
5092 /* Garbage collection needs some extra help with .opd sections.
5093 We don't want to necessarily keep everything referenced by
5094 relocs in .opd, as that would keep all functions. Instead,
5095 if we reference an .opd symbol (a function descriptor), we
5096 want to keep the function code symbol's section. This is
5097 easy for global symbols, but for local syms we need to keep
5098 information about the associated function section. */
5100 asection **opd_sym_map;
5102 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5103 opd_sym_map = bfd_zalloc (ibfd, amt);
5104 if (opd_sym_map == NULL)
5106 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5107 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5108 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5112 if (!is_ppc64_elf (info->output_bfd))
5114 htab = ppc_hash_table (info);
5118 /* For input files without an explicit abiversion in e_flags
5119 we should have flagged any with symbol st_other bits set
5120 as ELFv1 and above flagged those with .opd as ELFv2.
5121 Set the output abiversion if not yet set, and for any input
5122 still ambiguous, take its abiversion from the output.
5123 Differences in ABI are reported later. */
5124 if (abiversion (info->output_bfd) == 0)
5125 set_abiversion (info->output_bfd, abiversion (ibfd));
5126 else if (abiversion (ibfd) == 0)
5127 set_abiversion (ibfd, abiversion (info->output_bfd));
5129 p = &htab->dot_syms;
5130 while ((eh = *p) != NULL)
5133 if (&eh->elf == htab->elf.hgot)
5135 else if (htab->elf.hgot == NULL
5136 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5137 htab->elf.hgot = &eh->elf;
5138 else if (!add_symbol_adjust (eh, info))
5140 p = &eh->u.next_dot_sym;
5143 /* Clear the list for non-ppc64 input files. */
5144 p = &htab->dot_syms;
5145 while ((eh = *p) != NULL)
5148 p = &eh->u.next_dot_sym;
5151 /* We need to fix the undefs list for any syms we have twiddled to
5153 if (htab->twiddled_syms)
5155 bfd_link_repair_undef_list (&htab->elf.root);
5156 htab->twiddled_syms = 0;
5161 /* Undo hash table changes when an --as-needed input file is determined
5162 not to be needed. */
5165 ppc64_elf_notice_as_needed (bfd *ibfd,
5166 struct bfd_link_info *info,
5167 enum notice_asneeded_action act)
5169 if (act == notice_not_needed)
5171 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5176 htab->dot_syms = NULL;
5178 return _bfd_elf_notice_as_needed (ibfd, info, act);
5181 /* If --just-symbols against a final linked binary, then assume we need
5182 toc adjusting stubs when calling functions defined there. */
5185 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5187 if ((sec->flags & SEC_CODE) != 0
5188 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5189 && is_ppc64_elf (sec->owner))
5191 if (abiversion (sec->owner) >= 2
5192 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5193 sec->has_toc_reloc = 1;
5195 _bfd_elf_link_just_syms (sec, info);
5198 static struct plt_entry **
5199 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5200 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5202 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5203 struct plt_entry **local_plt;
5204 unsigned char *local_got_tls_masks;
5206 if (local_got_ents == NULL)
5208 bfd_size_type size = symtab_hdr->sh_info;
5210 size *= (sizeof (*local_got_ents)
5211 + sizeof (*local_plt)
5212 + sizeof (*local_got_tls_masks));
5213 local_got_ents = bfd_zalloc (abfd, size);
5214 if (local_got_ents == NULL)
5216 elf_local_got_ents (abfd) = local_got_ents;
5219 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5221 struct got_entry *ent;
5223 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5224 if (ent->addend == r_addend
5225 && ent->owner == abfd
5226 && ent->tls_type == tls_type)
5230 bfd_size_type amt = sizeof (*ent);
5231 ent = bfd_alloc (abfd, amt);
5234 ent->next = local_got_ents[r_symndx];
5235 ent->addend = r_addend;
5237 ent->tls_type = tls_type;
5238 ent->is_indirect = FALSE;
5239 ent->got.refcount = 0;
5240 local_got_ents[r_symndx] = ent;
5242 ent->got.refcount += 1;
5245 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5246 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5247 local_got_tls_masks[r_symndx] |= tls_type;
5249 return local_plt + r_symndx;
5253 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5255 struct plt_entry *ent;
5257 for (ent = *plist; ent != NULL; ent = ent->next)
5258 if (ent->addend == addend)
5262 bfd_size_type amt = sizeof (*ent);
5263 ent = bfd_alloc (abfd, amt);
5267 ent->addend = addend;
5268 ent->plt.refcount = 0;
5271 ent->plt.refcount += 1;
5276 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5278 return (r_type == R_PPC64_REL24
5279 || r_type == R_PPC64_REL14
5280 || r_type == R_PPC64_REL14_BRTAKEN
5281 || r_type == R_PPC64_REL14_BRNTAKEN
5282 || r_type == R_PPC64_ADDR24
5283 || r_type == R_PPC64_ADDR14
5284 || r_type == R_PPC64_ADDR14_BRTAKEN
5285 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5288 /* Look through the relocs for a section during the first phase, and
5289 calculate needed space in the global offset table, procedure
5290 linkage table, and dynamic reloc sections. */
5293 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5294 asection *sec, const Elf_Internal_Rela *relocs)
5296 struct ppc_link_hash_table *htab;
5297 Elf_Internal_Shdr *symtab_hdr;
5298 struct elf_link_hash_entry **sym_hashes;
5299 const Elf_Internal_Rela *rel;
5300 const Elf_Internal_Rela *rel_end;
5302 asection **opd_sym_map;
5303 struct elf_link_hash_entry *tga, *dottga;
5305 if (bfd_link_relocatable (info))
5308 /* Don't do anything special with non-loaded, non-alloced sections.
5309 In particular, any relocs in such sections should not affect GOT
5310 and PLT reference counting (ie. we don't allow them to create GOT
5311 or PLT entries), there's no possibility or desire to optimize TLS
5312 relocs, and there's not much point in propagating relocs to shared
5313 libs that the dynamic linker won't relocate. */
5314 if ((sec->flags & SEC_ALLOC) == 0)
5317 BFD_ASSERT (is_ppc64_elf (abfd));
5319 htab = ppc_hash_table (info);
5323 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5324 FALSE, FALSE, TRUE);
5325 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5326 FALSE, FALSE, TRUE);
5327 symtab_hdr = &elf_symtab_hdr (abfd);
5328 sym_hashes = elf_sym_hashes (abfd);
5331 if (ppc64_elf_section_data (sec) != NULL
5332 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5333 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5335 rel_end = relocs + sec->reloc_count;
5336 for (rel = relocs; rel < rel_end; rel++)
5338 unsigned long r_symndx;
5339 struct elf_link_hash_entry *h;
5340 enum elf_ppc64_reloc_type r_type;
5342 struct _ppc64_elf_section_data *ppc64_sec;
5343 struct plt_entry **ifunc, **plt_list;
5345 r_symndx = ELF64_R_SYM (rel->r_info);
5346 if (r_symndx < symtab_hdr->sh_info)
5350 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5351 h = elf_follow_link (h);
5353 /* PR15323, ref flags aren't set for references in the same
5355 h->root.non_ir_ref = 1;
5357 if (h == htab->elf.hgot)
5358 sec->has_toc_reloc = 1;
5365 if (h->type == STT_GNU_IFUNC)
5368 ifunc = &h->plt.plist;
5373 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5378 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5380 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5381 rel->r_addend, PLT_IFUNC);
5387 r_type = ELF64_R_TYPE (rel->r_info);
5392 /* These special tls relocs tie a call to __tls_get_addr with
5393 its parameter symbol. */
5396 case R_PPC64_GOT_TLSLD16:
5397 case R_PPC64_GOT_TLSLD16_LO:
5398 case R_PPC64_GOT_TLSLD16_HI:
5399 case R_PPC64_GOT_TLSLD16_HA:
5400 tls_type = TLS_TLS | TLS_LD;
5403 case R_PPC64_GOT_TLSGD16:
5404 case R_PPC64_GOT_TLSGD16_LO:
5405 case R_PPC64_GOT_TLSGD16_HI:
5406 case R_PPC64_GOT_TLSGD16_HA:
5407 tls_type = TLS_TLS | TLS_GD;
5410 case R_PPC64_GOT_TPREL16_DS:
5411 case R_PPC64_GOT_TPREL16_LO_DS:
5412 case R_PPC64_GOT_TPREL16_HI:
5413 case R_PPC64_GOT_TPREL16_HA:
5414 if (bfd_link_pic (info))
5415 info->flags |= DF_STATIC_TLS;
5416 tls_type = TLS_TLS | TLS_TPREL;
5419 case R_PPC64_GOT_DTPREL16_DS:
5420 case R_PPC64_GOT_DTPREL16_LO_DS:
5421 case R_PPC64_GOT_DTPREL16_HI:
5422 case R_PPC64_GOT_DTPREL16_HA:
5423 tls_type = TLS_TLS | TLS_DTPREL;
5425 sec->has_tls_reloc = 1;
5429 case R_PPC64_GOT16_DS:
5430 case R_PPC64_GOT16_HA:
5431 case R_PPC64_GOT16_HI:
5432 case R_PPC64_GOT16_LO:
5433 case R_PPC64_GOT16_LO_DS:
5434 /* This symbol requires a global offset table entry. */
5435 sec->has_toc_reloc = 1;
5436 if (r_type == R_PPC64_GOT_TLSLD16
5437 || r_type == R_PPC64_GOT_TLSGD16
5438 || r_type == R_PPC64_GOT_TPREL16_DS
5439 || r_type == R_PPC64_GOT_DTPREL16_DS
5440 || r_type == R_PPC64_GOT16
5441 || r_type == R_PPC64_GOT16_DS)
5443 htab->do_multi_toc = 1;
5444 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5447 if (ppc64_elf_tdata (abfd)->got == NULL
5448 && !create_got_section (abfd, info))
5453 struct ppc_link_hash_entry *eh;
5454 struct got_entry *ent;
5456 eh = (struct ppc_link_hash_entry *) h;
5457 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5458 if (ent->addend == rel->r_addend
5459 && ent->owner == abfd
5460 && ent->tls_type == tls_type)
5464 bfd_size_type amt = sizeof (*ent);
5465 ent = bfd_alloc (abfd, amt);
5468 ent->next = eh->elf.got.glist;
5469 ent->addend = rel->r_addend;
5471 ent->tls_type = tls_type;
5472 ent->is_indirect = FALSE;
5473 ent->got.refcount = 0;
5474 eh->elf.got.glist = ent;
5476 ent->got.refcount += 1;
5477 eh->tls_mask |= tls_type;
5480 /* This is a global offset table entry for a local symbol. */
5481 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5482 rel->r_addend, tls_type))
5485 /* We may also need a plt entry if the symbol turns out to be
5487 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5489 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5494 case R_PPC64_PLT16_HA:
5495 case R_PPC64_PLT16_HI:
5496 case R_PPC64_PLT16_LO:
5499 /* This symbol requires a procedure linkage table entry. */
5504 if (h->root.root.string[0] == '.'
5505 && h->root.root.string[1] != '\0')
5506 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5507 plt_list = &h->plt.plist;
5509 if (plt_list == NULL)
5511 /* It does not make sense to have a procedure linkage
5512 table entry for a non-ifunc local symbol. */
5513 info->callbacks->einfo
5514 (_("%P: %H: %s reloc against local symbol\n"),
5515 abfd, sec, rel->r_offset,
5516 ppc64_elf_howto_table[r_type]->name);
5517 bfd_set_error (bfd_error_bad_value);
5520 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5524 /* The following relocations don't need to propagate the
5525 relocation if linking a shared object since they are
5526 section relative. */
5527 case R_PPC64_SECTOFF:
5528 case R_PPC64_SECTOFF_LO:
5529 case R_PPC64_SECTOFF_HI:
5530 case R_PPC64_SECTOFF_HA:
5531 case R_PPC64_SECTOFF_DS:
5532 case R_PPC64_SECTOFF_LO_DS:
5533 case R_PPC64_DTPREL16:
5534 case R_PPC64_DTPREL16_LO:
5535 case R_PPC64_DTPREL16_HI:
5536 case R_PPC64_DTPREL16_HA:
5537 case R_PPC64_DTPREL16_DS:
5538 case R_PPC64_DTPREL16_LO_DS:
5539 case R_PPC64_DTPREL16_HIGH:
5540 case R_PPC64_DTPREL16_HIGHA:
5541 case R_PPC64_DTPREL16_HIGHER:
5542 case R_PPC64_DTPREL16_HIGHERA:
5543 case R_PPC64_DTPREL16_HIGHEST:
5544 case R_PPC64_DTPREL16_HIGHESTA:
5549 case R_PPC64_REL16_LO:
5550 case R_PPC64_REL16_HI:
5551 case R_PPC64_REL16_HA:
5552 case R_PPC64_REL16DX_HA:
5555 /* Not supported as a dynamic relocation. */
5556 case R_PPC64_ADDR64_LOCAL:
5557 if (bfd_link_pic (info))
5559 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5561 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5562 "in shared libraries and PIEs.\n"),
5563 abfd, sec, rel->r_offset,
5564 ppc64_elf_howto_table[r_type]->name);
5565 bfd_set_error (bfd_error_bad_value);
5571 case R_PPC64_TOC16_DS:
5572 htab->do_multi_toc = 1;
5573 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5574 case R_PPC64_TOC16_LO:
5575 case R_PPC64_TOC16_HI:
5576 case R_PPC64_TOC16_HA:
5577 case R_PPC64_TOC16_LO_DS:
5578 sec->has_toc_reloc = 1;
5585 /* This relocation describes the C++ object vtable hierarchy.
5586 Reconstruct it for later use during GC. */
5587 case R_PPC64_GNU_VTINHERIT:
5588 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5592 /* This relocation describes which C++ vtable entries are actually
5593 used. Record for later use during GC. */
5594 case R_PPC64_GNU_VTENTRY:
5595 BFD_ASSERT (h != NULL);
5597 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5602 case R_PPC64_REL14_BRTAKEN:
5603 case R_PPC64_REL14_BRNTAKEN:
5605 asection *dest = NULL;
5607 /* Heuristic: If jumping outside our section, chances are
5608 we are going to need a stub. */
5611 /* If the sym is weak it may be overridden later, so
5612 don't assume we know where a weak sym lives. */
5613 if (h->root.type == bfd_link_hash_defined)
5614 dest = h->root.u.def.section;
5618 Elf_Internal_Sym *isym;
5620 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5625 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5629 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5638 if (h->root.root.string[0] == '.'
5639 && h->root.root.string[1] != '\0')
5640 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5642 if (h == tga || h == dottga)
5644 sec->has_tls_reloc = 1;
5646 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5647 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5648 /* We have a new-style __tls_get_addr call with
5652 /* Mark this section as having an old-style call. */
5653 sec->has_tls_get_addr_call = 1;
5655 plt_list = &h->plt.plist;
5658 /* We may need a .plt entry if the function this reloc
5659 refers to is in a shared lib. */
5661 && !update_plt_info (abfd, plt_list, rel->r_addend))
5665 case R_PPC64_ADDR14:
5666 case R_PPC64_ADDR14_BRNTAKEN:
5667 case R_PPC64_ADDR14_BRTAKEN:
5668 case R_PPC64_ADDR24:
5671 case R_PPC64_TPREL64:
5672 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5673 if (bfd_link_pic (info))
5674 info->flags |= DF_STATIC_TLS;
5677 case R_PPC64_DTPMOD64:
5678 if (rel + 1 < rel_end
5679 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5680 && rel[1].r_offset == rel->r_offset + 8)
5681 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5683 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5686 case R_PPC64_DTPREL64:
5687 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5689 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5690 && rel[-1].r_offset == rel->r_offset - 8)
5691 /* This is the second reloc of a dtpmod, dtprel pair.
5692 Don't mark with TLS_DTPREL. */
5696 sec->has_tls_reloc = 1;
5699 struct ppc_link_hash_entry *eh;
5700 eh = (struct ppc_link_hash_entry *) h;
5701 eh->tls_mask |= tls_type;
5704 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5705 rel->r_addend, tls_type))
5708 ppc64_sec = ppc64_elf_section_data (sec);
5709 if (ppc64_sec->sec_type != sec_toc)
5713 /* One extra to simplify get_tls_mask. */
5714 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5715 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5716 if (ppc64_sec->u.toc.symndx == NULL)
5718 amt = sec->size * sizeof (bfd_vma) / 8;
5719 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5720 if (ppc64_sec->u.toc.add == NULL)
5722 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5723 ppc64_sec->sec_type = sec_toc;
5725 BFD_ASSERT (rel->r_offset % 8 == 0);
5726 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5727 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5729 /* Mark the second slot of a GD or LD entry.
5730 -1 to indicate GD and -2 to indicate LD. */
5731 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5732 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5733 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5734 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5737 case R_PPC64_TPREL16:
5738 case R_PPC64_TPREL16_LO:
5739 case R_PPC64_TPREL16_HI:
5740 case R_PPC64_TPREL16_HA:
5741 case R_PPC64_TPREL16_DS:
5742 case R_PPC64_TPREL16_LO_DS:
5743 case R_PPC64_TPREL16_HIGH:
5744 case R_PPC64_TPREL16_HIGHA:
5745 case R_PPC64_TPREL16_HIGHER:
5746 case R_PPC64_TPREL16_HIGHERA:
5747 case R_PPC64_TPREL16_HIGHEST:
5748 case R_PPC64_TPREL16_HIGHESTA:
5749 if (bfd_link_pic (info))
5751 info->flags |= DF_STATIC_TLS;
5756 case R_PPC64_ADDR64:
5757 if (opd_sym_map != NULL
5758 && rel + 1 < rel_end
5759 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5763 if (h->root.root.string[0] == '.'
5764 && h->root.root.string[1] != 0
5765 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5768 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5773 Elf_Internal_Sym *isym;
5775 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5780 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5781 if (s != NULL && s != sec)
5782 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5787 case R_PPC64_ADDR16:
5788 case R_PPC64_ADDR16_DS:
5789 case R_PPC64_ADDR16_HA:
5790 case R_PPC64_ADDR16_HI:
5791 case R_PPC64_ADDR16_HIGH:
5792 case R_PPC64_ADDR16_HIGHA:
5793 case R_PPC64_ADDR16_HIGHER:
5794 case R_PPC64_ADDR16_HIGHERA:
5795 case R_PPC64_ADDR16_HIGHEST:
5796 case R_PPC64_ADDR16_HIGHESTA:
5797 case R_PPC64_ADDR16_LO:
5798 case R_PPC64_ADDR16_LO_DS:
5799 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5800 && rel->r_addend == 0)
5802 /* We may need a .plt entry if this reloc refers to a
5803 function in a shared lib. */
5804 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5806 h->pointer_equality_needed = 1;
5813 case R_PPC64_ADDR32:
5814 case R_PPC64_UADDR16:
5815 case R_PPC64_UADDR32:
5816 case R_PPC64_UADDR64:
5818 if (h != NULL && !bfd_link_pic (info))
5819 /* We may need a copy reloc. */
5822 /* Don't propagate .opd relocs. */
5823 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5826 /* If we are creating a shared library, and this is a reloc
5827 against a global symbol, or a non PC relative reloc
5828 against a local symbol, then we need to copy the reloc
5829 into the shared library. However, if we are linking with
5830 -Bsymbolic, we do not need to copy a reloc against a
5831 global symbol which is defined in an object we are
5832 including in the link (i.e., DEF_REGULAR is set). At
5833 this point we have not seen all the input files, so it is
5834 possible that DEF_REGULAR is not set now but will be set
5835 later (it is never cleared). In case of a weak definition,
5836 DEF_REGULAR may be cleared later by a strong definition in
5837 a shared library. We account for that possibility below by
5838 storing information in the dyn_relocs field of the hash
5839 table entry. A similar situation occurs when creating
5840 shared libraries and symbol visibility changes render the
5843 If on the other hand, we are creating an executable, we
5844 may need to keep relocations for symbols satisfied by a
5845 dynamic library if we manage to avoid copy relocs for the
5848 if ((bfd_link_pic (info)
5849 && (must_be_dyn_reloc (info, r_type)
5851 && (!SYMBOLIC_BIND (info, h)
5852 || h->root.type == bfd_link_hash_defweak
5853 || !h->def_regular))))
5854 || (ELIMINATE_COPY_RELOCS
5855 && !bfd_link_pic (info)
5857 && (h->root.type == bfd_link_hash_defweak
5858 || !h->def_regular))
5859 || (!bfd_link_pic (info)
5862 /* We must copy these reloc types into the output file.
5863 Create a reloc section in dynobj and make room for
5867 sreloc = _bfd_elf_make_dynamic_reloc_section
5868 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5874 /* If this is a global symbol, we count the number of
5875 relocations we need for this symbol. */
5878 struct elf_dyn_relocs *p;
5879 struct elf_dyn_relocs **head;
5881 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5883 if (p == NULL || p->sec != sec)
5885 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5895 if (!must_be_dyn_reloc (info, r_type))
5900 /* Track dynamic relocs needed for local syms too.
5901 We really need local syms available to do this
5903 struct ppc_dyn_relocs *p;
5904 struct ppc_dyn_relocs **head;
5905 bfd_boolean is_ifunc;
5908 Elf_Internal_Sym *isym;
5910 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5915 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5919 vpp = &elf_section_data (s)->local_dynrel;
5920 head = (struct ppc_dyn_relocs **) vpp;
5921 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5923 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5925 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5927 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5933 p->ifunc = is_ifunc;
5949 /* Merge backend specific data from an object file to the output
5950 object file when linking. */
5953 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5955 unsigned long iflags, oflags;
5957 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5960 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5963 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5966 iflags = elf_elfheader (ibfd)->e_flags;
5967 oflags = elf_elfheader (obfd)->e_flags;
5969 if (iflags & ~EF_PPC64_ABI)
5971 (*_bfd_error_handler)
5972 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5973 bfd_set_error (bfd_error_bad_value);
5976 else if (iflags != oflags && iflags != 0)
5978 (*_bfd_error_handler)
5979 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5980 ibfd, iflags, oflags);
5981 bfd_set_error (bfd_error_bad_value);
5985 /* Merge Tag_compatibility attributes and any common GNU ones. */
5986 _bfd_elf_merge_object_attributes (ibfd, obfd);
5992 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5994 /* Print normal ELF private data. */
5995 _bfd_elf_print_private_bfd_data (abfd, ptr);
5997 if (elf_elfheader (abfd)->e_flags != 0)
6001 /* xgettext:c-format */
6002 fprintf (file, _("private flags = 0x%lx:"),
6003 elf_elfheader (abfd)->e_flags);
6005 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6006 fprintf (file, _(" [abiv%ld]"),
6007 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6014 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6015 of the code entry point, and its section, which must be in the same
6016 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6019 opd_entry_value (asection *opd_sec,
6021 asection **code_sec,
6023 bfd_boolean in_code_sec)
6025 bfd *opd_bfd = opd_sec->owner;
6026 Elf_Internal_Rela *relocs;
6027 Elf_Internal_Rela *lo, *hi, *look;
6030 /* No relocs implies we are linking a --just-symbols object, or looking
6031 at a final linked executable with addr2line or somesuch. */
6032 if (opd_sec->reloc_count == 0)
6034 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6036 if (contents == NULL)
6038 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6039 return (bfd_vma) -1;
6040 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6043 /* PR 17512: file: 64b9dfbb. */
6044 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6045 return (bfd_vma) -1;
6047 val = bfd_get_64 (opd_bfd, contents + offset);
6048 if (code_sec != NULL)
6050 asection *sec, *likely = NULL;
6056 && val < sec->vma + sec->size)
6062 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6064 && (sec->flags & SEC_LOAD) != 0
6065 && (sec->flags & SEC_ALLOC) != 0)
6070 if (code_off != NULL)
6071 *code_off = val - likely->vma;
6077 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6079 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6081 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6082 /* PR 17512: file: df8e1fd6. */
6084 return (bfd_vma) -1;
6086 /* Go find the opd reloc at the sym address. */
6088 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6092 look = lo + (hi - lo) / 2;
6093 if (look->r_offset < offset)
6095 else if (look->r_offset > offset)
6099 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6101 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6102 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6104 unsigned long symndx = ELF64_R_SYM (look->r_info);
6105 asection *sec = NULL;
6107 if (symndx >= symtab_hdr->sh_info
6108 && elf_sym_hashes (opd_bfd) != NULL)
6110 struct elf_link_hash_entry **sym_hashes;
6111 struct elf_link_hash_entry *rh;
6113 sym_hashes = elf_sym_hashes (opd_bfd);
6114 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6117 rh = elf_follow_link (rh);
6118 if (rh->root.type != bfd_link_hash_defined
6119 && rh->root.type != bfd_link_hash_defweak)
6121 if (rh->root.u.def.section->owner == opd_bfd)
6123 val = rh->root.u.def.value;
6124 sec = rh->root.u.def.section;
6131 Elf_Internal_Sym *sym;
6133 if (symndx < symtab_hdr->sh_info)
6135 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6138 size_t symcnt = symtab_hdr->sh_info;
6139 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6144 symtab_hdr->contents = (bfd_byte *) sym;
6150 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6156 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6159 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6160 val = sym->st_value;
6163 val += look->r_addend;
6164 if (code_off != NULL)
6166 if (code_sec != NULL)
6168 if (in_code_sec && *code_sec != sec)
6173 if (sec->output_section != NULL)
6174 val += sec->output_section->vma + sec->output_offset;
6183 /* If the ELF symbol SYM might be a function in SEC, return the
6184 function size and set *CODE_OFF to the function's entry point,
6185 otherwise return zero. */
6187 static bfd_size_type
6188 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6193 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6194 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6198 if (!(sym->flags & BSF_SYNTHETIC))
6199 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6201 if (strcmp (sym->section->name, ".opd") == 0)
6203 struct _opd_sec_data *opd = get_opd_info (sym->section);
6204 bfd_vma symval = sym->value;
6207 && opd->adjust != NULL
6208 && elf_section_data (sym->section)->relocs != NULL)
6210 /* opd_entry_value will use cached relocs that have been
6211 adjusted, but with raw symbols. That means both local
6212 and global symbols need adjusting. */
6213 long adjust = opd->adjust[OPD_NDX (symval)];
6219 if (opd_entry_value (sym->section, symval,
6220 &sec, code_off, TRUE) == (bfd_vma) -1)
6222 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6223 symbol. This size has nothing to do with the code size of the
6224 function, which is what we're supposed to return, but the
6225 code size isn't available without looking up the dot-sym.
6226 However, doing that would be a waste of time particularly
6227 since elf_find_function will look at the dot-sym anyway.
6228 Now, elf_find_function will keep the largest size of any
6229 function sym found at the code address of interest, so return
6230 1 here to avoid it incorrectly caching a larger function size
6231 for a small function. This does mean we return the wrong
6232 size for a new-ABI function of size 24, but all that does is
6233 disable caching for such functions. */
6239 if (sym->section != sec)
6241 *code_off = sym->value;
6248 /* Return true if symbol is defined in a regular object file. */
6251 is_static_defined (struct elf_link_hash_entry *h)
6253 return ((h->root.type == bfd_link_hash_defined
6254 || h->root.type == bfd_link_hash_defweak)
6255 && h->root.u.def.section != NULL
6256 && h->root.u.def.section->output_section != NULL);
6259 /* If FDH is a function descriptor symbol, return the associated code
6260 entry symbol if it is defined. Return NULL otherwise. */
6262 static struct ppc_link_hash_entry *
6263 defined_code_entry (struct ppc_link_hash_entry *fdh)
6265 if (fdh->is_func_descriptor)
6267 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6268 if (fh->elf.root.type == bfd_link_hash_defined
6269 || fh->elf.root.type == bfd_link_hash_defweak)
6275 /* If FH is a function code entry symbol, return the associated
6276 function descriptor symbol if it is defined. Return NULL otherwise. */
6278 static struct ppc_link_hash_entry *
6279 defined_func_desc (struct ppc_link_hash_entry *fh)
6282 && fh->oh->is_func_descriptor)
6284 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6285 if (fdh->elf.root.type == bfd_link_hash_defined
6286 || fdh->elf.root.type == bfd_link_hash_defweak)
6292 /* Mark all our entry sym sections, both opd and code section. */
6295 ppc64_elf_gc_keep (struct bfd_link_info *info)
6297 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6298 struct bfd_sym_chain *sym;
6303 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6305 struct ppc_link_hash_entry *eh, *fh;
6308 eh = (struct ppc_link_hash_entry *)
6309 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6312 if (eh->elf.root.type != bfd_link_hash_defined
6313 && eh->elf.root.type != bfd_link_hash_defweak)
6316 fh = defined_code_entry (eh);
6319 sec = fh->elf.root.u.def.section;
6320 sec->flags |= SEC_KEEP;
6322 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6323 && opd_entry_value (eh->elf.root.u.def.section,
6324 eh->elf.root.u.def.value,
6325 &sec, NULL, FALSE) != (bfd_vma) -1)
6326 sec->flags |= SEC_KEEP;
6328 sec = eh->elf.root.u.def.section;
6329 sec->flags |= SEC_KEEP;
6333 /* Mark sections containing dynamically referenced symbols. When
6334 building shared libraries, we must assume that any visible symbol is
6338 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6340 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6341 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6342 struct ppc_link_hash_entry *fdh;
6343 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6345 /* Dynamic linking info is on the func descriptor sym. */
6346 fdh = defined_func_desc (eh);
6350 if ((eh->elf.root.type == bfd_link_hash_defined
6351 || eh->elf.root.type == bfd_link_hash_defweak)
6352 && (eh->elf.ref_dynamic
6353 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6354 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6355 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6356 && (!bfd_link_executable (info)
6357 || info->export_dynamic
6360 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6361 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6362 || !bfd_hide_sym_by_version (info->version_info,
6363 eh->elf.root.root.string)))))
6366 struct ppc_link_hash_entry *fh;
6368 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6370 /* Function descriptor syms cause the associated
6371 function code sym section to be marked. */
6372 fh = defined_code_entry (eh);
6375 code_sec = fh->elf.root.u.def.section;
6376 code_sec->flags |= SEC_KEEP;
6378 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6379 && opd_entry_value (eh->elf.root.u.def.section,
6380 eh->elf.root.u.def.value,
6381 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6382 code_sec->flags |= SEC_KEEP;
6388 /* Return the section that should be marked against GC for a given
6392 ppc64_elf_gc_mark_hook (asection *sec,
6393 struct bfd_link_info *info,
6394 Elf_Internal_Rela *rel,
6395 struct elf_link_hash_entry *h,
6396 Elf_Internal_Sym *sym)
6400 /* Syms return NULL if we're marking .opd, so we avoid marking all
6401 function sections, as all functions are referenced in .opd. */
6403 if (get_opd_info (sec) != NULL)
6408 enum elf_ppc64_reloc_type r_type;
6409 struct ppc_link_hash_entry *eh, *fh, *fdh;
6411 r_type = ELF64_R_TYPE (rel->r_info);
6414 case R_PPC64_GNU_VTINHERIT:
6415 case R_PPC64_GNU_VTENTRY:
6419 switch (h->root.type)
6421 case bfd_link_hash_defined:
6422 case bfd_link_hash_defweak:
6423 eh = (struct ppc_link_hash_entry *) h;
6424 fdh = defined_func_desc (eh);
6428 /* Function descriptor syms cause the associated
6429 function code sym section to be marked. */
6430 fh = defined_code_entry (eh);
6433 /* They also mark their opd section. */
6434 eh->elf.root.u.def.section->gc_mark = 1;
6436 rsec = fh->elf.root.u.def.section;
6438 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6439 && opd_entry_value (eh->elf.root.u.def.section,
6440 eh->elf.root.u.def.value,
6441 &rsec, NULL, FALSE) != (bfd_vma) -1)
6442 eh->elf.root.u.def.section->gc_mark = 1;
6444 rsec = h->root.u.def.section;
6447 case bfd_link_hash_common:
6448 rsec = h->root.u.c.p->section;
6452 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6458 struct _opd_sec_data *opd;
6460 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6461 opd = get_opd_info (rsec);
6462 if (opd != NULL && opd->func_sec != NULL)
6466 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6473 /* Update the .got, .plt. and dynamic reloc reference counts for the
6474 section being removed. */
6477 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6478 asection *sec, const Elf_Internal_Rela *relocs)
6480 struct ppc_link_hash_table *htab;
6481 Elf_Internal_Shdr *symtab_hdr;
6482 struct elf_link_hash_entry **sym_hashes;
6483 struct got_entry **local_got_ents;
6484 const Elf_Internal_Rela *rel, *relend;
6486 if (bfd_link_relocatable (info))
6489 if ((sec->flags & SEC_ALLOC) == 0)
6492 elf_section_data (sec)->local_dynrel = NULL;
6494 htab = ppc_hash_table (info);
6498 symtab_hdr = &elf_symtab_hdr (abfd);
6499 sym_hashes = elf_sym_hashes (abfd);
6500 local_got_ents = elf_local_got_ents (abfd);
6502 relend = relocs + sec->reloc_count;
6503 for (rel = relocs; rel < relend; rel++)
6505 unsigned long r_symndx;
6506 enum elf_ppc64_reloc_type r_type;
6507 struct elf_link_hash_entry *h = NULL;
6508 struct plt_entry **plt_list;
6509 unsigned char tls_type = 0;
6511 r_symndx = ELF64_R_SYM (rel->r_info);
6512 r_type = ELF64_R_TYPE (rel->r_info);
6513 if (r_symndx >= symtab_hdr->sh_info)
6515 struct ppc_link_hash_entry *eh;
6516 struct elf_dyn_relocs **pp;
6517 struct elf_dyn_relocs *p;
6519 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6520 h = elf_follow_link (h);
6521 eh = (struct ppc_link_hash_entry *) h;
6523 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6526 /* Everything must go for SEC. */
6534 case R_PPC64_GOT_TLSLD16:
6535 case R_PPC64_GOT_TLSLD16_LO:
6536 case R_PPC64_GOT_TLSLD16_HI:
6537 case R_PPC64_GOT_TLSLD16_HA:
6538 tls_type = TLS_TLS | TLS_LD;
6541 case R_PPC64_GOT_TLSGD16:
6542 case R_PPC64_GOT_TLSGD16_LO:
6543 case R_PPC64_GOT_TLSGD16_HI:
6544 case R_PPC64_GOT_TLSGD16_HA:
6545 tls_type = TLS_TLS | TLS_GD;
6548 case R_PPC64_GOT_TPREL16_DS:
6549 case R_PPC64_GOT_TPREL16_LO_DS:
6550 case R_PPC64_GOT_TPREL16_HI:
6551 case R_PPC64_GOT_TPREL16_HA:
6552 tls_type = TLS_TLS | TLS_TPREL;
6555 case R_PPC64_GOT_DTPREL16_DS:
6556 case R_PPC64_GOT_DTPREL16_LO_DS:
6557 case R_PPC64_GOT_DTPREL16_HI:
6558 case R_PPC64_GOT_DTPREL16_HA:
6559 tls_type = TLS_TLS | TLS_DTPREL;
6563 case R_PPC64_GOT16_DS:
6564 case R_PPC64_GOT16_HA:
6565 case R_PPC64_GOT16_HI:
6566 case R_PPC64_GOT16_LO:
6567 case R_PPC64_GOT16_LO_DS:
6570 struct got_entry *ent;
6575 ent = local_got_ents[r_symndx];
6577 for (; ent != NULL; ent = ent->next)
6578 if (ent->addend == rel->r_addend
6579 && ent->owner == abfd
6580 && ent->tls_type == tls_type)
6584 if (ent->got.refcount > 0)
6585 ent->got.refcount -= 1;
6589 case R_PPC64_PLT16_HA:
6590 case R_PPC64_PLT16_HI:
6591 case R_PPC64_PLT16_LO:
6595 case R_PPC64_REL14_BRNTAKEN:
6596 case R_PPC64_REL14_BRTAKEN:
6600 plt_list = &h->plt.plist;
6601 else if (local_got_ents != NULL)
6603 struct plt_entry **local_plt = (struct plt_entry **)
6604 (local_got_ents + symtab_hdr->sh_info);
6605 unsigned char *local_got_tls_masks = (unsigned char *)
6606 (local_plt + symtab_hdr->sh_info);
6607 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6608 plt_list = local_plt + r_symndx;
6612 struct plt_entry *ent;
6614 for (ent = *plt_list; ent != NULL; ent = ent->next)
6615 if (ent->addend == rel->r_addend)
6617 if (ent != NULL && ent->plt.refcount > 0)
6618 ent->plt.refcount -= 1;
6629 /* The maximum size of .sfpr. */
6630 #define SFPR_MAX (218*4)
6632 struct sfpr_def_parms
6634 const char name[12];
6635 unsigned char lo, hi;
6636 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6637 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6640 /* Auto-generate _save*, _rest* functions in .sfpr.
6641 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6645 sfpr_define (struct bfd_link_info *info,
6646 const struct sfpr_def_parms *parm,
6649 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6651 size_t len = strlen (parm->name);
6652 bfd_boolean writing = FALSE;
6658 memcpy (sym, parm->name, len);
6661 for (i = parm->lo; i <= parm->hi; i++)
6663 struct ppc_link_hash_entry *h;
6665 sym[len + 0] = i / 10 + '0';
6666 sym[len + 1] = i % 10 + '0';
6667 h = (struct ppc_link_hash_entry *)
6668 elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6669 if (stub_sec != NULL)
6672 && h->elf.root.type == bfd_link_hash_defined
6673 && h->elf.root.u.def.section == htab->sfpr)
6675 struct elf_link_hash_entry *s;
6677 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6678 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6681 if (s->root.type == bfd_link_hash_new
6682 || (s->root.type = bfd_link_hash_defined
6683 && s->root.u.def.section == stub_sec))
6685 s->root.type = bfd_link_hash_defined;
6686 s->root.u.def.section = stub_sec;
6687 s->root.u.def.value = (stub_sec->size
6688 + h->elf.root.u.def.value);
6691 s->ref_regular_nonweak = 1;
6692 s->forced_local = 1;
6694 s->root.linker_def = 1;
6702 if (!h->elf.def_regular)
6704 h->elf.root.type = bfd_link_hash_defined;
6705 h->elf.root.u.def.section = htab->sfpr;
6706 h->elf.root.u.def.value = htab->sfpr->size;
6707 h->elf.type = STT_FUNC;
6708 h->elf.def_regular = 1;
6709 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6711 if (htab->sfpr->contents == NULL)
6713 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6714 if (htab->sfpr->contents == NULL)
6721 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6723 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6725 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6726 htab->sfpr->size = p - htab->sfpr->contents;
6734 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6736 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6741 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6743 p = savegpr0 (abfd, p, r);
6744 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6746 bfd_put_32 (abfd, BLR, p);
6751 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6753 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6758 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6760 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6762 p = restgpr0 (abfd, p, r);
6763 bfd_put_32 (abfd, MTLR_R0, p);
6767 p = restgpr0 (abfd, p, 30);
6768 p = restgpr0 (abfd, p, 31);
6770 bfd_put_32 (abfd, BLR, p);
6775 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6777 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6782 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6784 p = savegpr1 (abfd, p, r);
6785 bfd_put_32 (abfd, BLR, p);
6790 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6792 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6797 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6799 p = restgpr1 (abfd, p, r);
6800 bfd_put_32 (abfd, BLR, p);
6805 savefpr (bfd *abfd, bfd_byte *p, int r)
6807 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6812 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6814 p = savefpr (abfd, p, r);
6815 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6817 bfd_put_32 (abfd, BLR, p);
6822 restfpr (bfd *abfd, bfd_byte *p, int r)
6824 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6829 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6831 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6833 p = restfpr (abfd, p, r);
6834 bfd_put_32 (abfd, MTLR_R0, p);
6838 p = restfpr (abfd, p, 30);
6839 p = restfpr (abfd, p, 31);
6841 bfd_put_32 (abfd, BLR, p);
6846 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6848 p = savefpr (abfd, p, r);
6849 bfd_put_32 (abfd, BLR, p);
6854 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6856 p = restfpr (abfd, p, r);
6857 bfd_put_32 (abfd, BLR, p);
6862 savevr (bfd *abfd, bfd_byte *p, int r)
6864 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6866 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6871 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6873 p = savevr (abfd, p, r);
6874 bfd_put_32 (abfd, BLR, p);
6879 restvr (bfd *abfd, bfd_byte *p, int r)
6881 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6883 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6888 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6890 p = restvr (abfd, p, r);
6891 bfd_put_32 (abfd, BLR, p);
6895 /* Called via elf_link_hash_traverse to transfer dynamic linking
6896 information on function code symbol entries to their corresponding
6897 function descriptor symbol entries. */
6900 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6902 struct bfd_link_info *info;
6903 struct ppc_link_hash_table *htab;
6904 struct plt_entry *ent;
6905 struct ppc_link_hash_entry *fh;
6906 struct ppc_link_hash_entry *fdh;
6907 bfd_boolean force_local;
6909 fh = (struct ppc_link_hash_entry *) h;
6910 if (fh->elf.root.type == bfd_link_hash_indirect)
6914 htab = ppc_hash_table (info);
6918 /* Resolve undefined references to dot-symbols as the value
6919 in the function descriptor, if we have one in a regular object.
6920 This is to satisfy cases like ".quad .foo". Calls to functions
6921 in dynamic objects are handled elsewhere. */
6922 if (fh->elf.root.type == bfd_link_hash_undefweak
6923 && fh->was_undefined
6924 && (fdh = defined_func_desc (fh)) != NULL
6925 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6926 && opd_entry_value (fdh->elf.root.u.def.section,
6927 fdh->elf.root.u.def.value,
6928 &fh->elf.root.u.def.section,
6929 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6931 fh->elf.root.type = fdh->elf.root.type;
6932 fh->elf.forced_local = 1;
6933 fh->elf.def_regular = fdh->elf.def_regular;
6934 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6937 /* If this is a function code symbol, transfer dynamic linking
6938 information to the function descriptor symbol. */
6942 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6943 if (ent->plt.refcount > 0)
6946 || fh->elf.root.root.string[0] != '.'
6947 || fh->elf.root.root.string[1] == '\0')
6950 /* Find the corresponding function descriptor symbol. Create it
6951 as undefined if necessary. */
6953 fdh = lookup_fdh (fh, htab);
6955 && !bfd_link_executable (info)
6956 && (fh->elf.root.type == bfd_link_hash_undefined
6957 || fh->elf.root.type == bfd_link_hash_undefweak))
6959 fdh = make_fdh (info, fh);
6964 /* Fake function descriptors are made undefweak. If the function
6965 code symbol is strong undefined, make the fake sym the same.
6966 If the function code symbol is defined, then force the fake
6967 descriptor local; We can't support overriding of symbols in a
6968 shared library on a fake descriptor. */
6972 && fdh->elf.root.type == bfd_link_hash_undefweak)
6974 if (fh->elf.root.type == bfd_link_hash_undefined)
6976 fdh->elf.root.type = bfd_link_hash_undefined;
6977 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6979 else if (fh->elf.root.type == bfd_link_hash_defined
6980 || fh->elf.root.type == bfd_link_hash_defweak)
6982 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6987 && !fdh->elf.forced_local
6988 && (!bfd_link_executable (info)
6989 || fdh->elf.def_dynamic
6990 || fdh->elf.ref_dynamic
6991 || (fdh->elf.root.type == bfd_link_hash_undefweak
6992 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6994 if (fdh->elf.dynindx == -1)
6995 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6997 fdh->elf.ref_regular |= fh->elf.ref_regular;
6998 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6999 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7000 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
7001 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
7003 move_plt_plist (fh, fdh);
7004 fdh->elf.needs_plt = 1;
7006 fdh->is_func_descriptor = 1;
7011 /* Now that the info is on the function descriptor, clear the
7012 function code sym info. Any function code syms for which we
7013 don't have a definition in a regular file, we force local.
7014 This prevents a shared library from exporting syms that have
7015 been imported from another library. Function code syms that
7016 are really in the library we must leave global to prevent the
7017 linker dragging in a definition from a static library. */
7018 force_local = (!fh->elf.def_regular
7020 || !fdh->elf.def_regular
7021 || fdh->elf.forced_local);
7022 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7027 static const struct sfpr_def_parms save_res_funcs[] =
7029 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7030 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7031 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7032 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7033 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7034 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7035 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7036 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7037 { "._savef", 14, 31, savefpr, savefpr1_tail },
7038 { "._restf", 14, 31, restfpr, restfpr1_tail },
7039 { "_savevr_", 20, 31, savevr, savevr_tail },
7040 { "_restvr_", 20, 31, restvr, restvr_tail }
7043 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7044 this hook to a) provide some gcc support functions, and b) transfer
7045 dynamic linking information gathered so far on function code symbol
7046 entries, to their corresponding function descriptor symbol entries. */
7049 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7050 struct bfd_link_info *info)
7052 struct ppc_link_hash_table *htab;
7055 htab = ppc_hash_table (info);
7059 if (!bfd_link_relocatable (info)
7060 && htab->elf.hgot != NULL)
7062 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7063 /* Make .TOC. defined so as to prevent it being made dynamic.
7064 The wrong value here is fixed later in ppc64_elf_set_toc. */
7065 if (!htab->elf.hgot->def_regular
7066 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7068 htab->elf.hgot->root.type = bfd_link_hash_defined;
7069 htab->elf.hgot->root.u.def.value = 0;
7070 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7071 htab->elf.hgot->def_regular = 1;
7072 htab->elf.hgot->root.linker_def = 1;
7074 htab->elf.hgot->type = STT_OBJECT;
7075 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7079 if (htab->sfpr == NULL)
7080 /* We don't have any relocs. */
7083 /* Provide any missing _save* and _rest* functions. */
7084 htab->sfpr->size = 0;
7085 if (htab->params->save_restore_funcs)
7086 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7087 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7090 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7092 if (htab->sfpr->size == 0)
7093 htab->sfpr->flags |= SEC_EXCLUDE;
7098 /* Return true if we have dynamic relocs that apply to read-only sections. */
7101 readonly_dynrelocs (struct elf_link_hash_entry *h)
7103 struct ppc_link_hash_entry *eh;
7104 struct elf_dyn_relocs *p;
7106 eh = (struct ppc_link_hash_entry *) h;
7107 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7109 asection *s = p->sec->output_section;
7111 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7117 /* Adjust a symbol defined by a dynamic object and referenced by a
7118 regular object. The current definition is in some section of the
7119 dynamic object, but we're not including those sections. We have to
7120 change the definition to something the rest of the link can
7124 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7125 struct elf_link_hash_entry *h)
7127 struct ppc_link_hash_table *htab;
7130 htab = ppc_hash_table (info);
7134 /* Deal with function syms. */
7135 if (h->type == STT_FUNC
7136 || h->type == STT_GNU_IFUNC
7139 /* Clear procedure linkage table information for any symbol that
7140 won't need a .plt entry. */
7141 struct plt_entry *ent;
7142 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7143 if (ent->plt.refcount > 0)
7146 || (h->type != STT_GNU_IFUNC
7147 && (SYMBOL_CALLS_LOCAL (info, h)
7148 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7149 && h->root.type == bfd_link_hash_undefweak)))
7150 || ((struct ppc_link_hash_entry *) h)->save_res)
7152 h->plt.plist = NULL;
7154 h->pointer_equality_needed = 0;
7156 else if (abiversion (info->output_bfd) == 2)
7158 /* Taking a function's address in a read/write section
7159 doesn't require us to define the function symbol in the
7160 executable on a global entry stub. A dynamic reloc can
7162 if (h->pointer_equality_needed
7163 && h->type != STT_GNU_IFUNC
7164 && !readonly_dynrelocs (h))
7166 h->pointer_equality_needed = 0;
7170 /* After adjust_dynamic_symbol, non_got_ref set in the
7171 non-shared case means that we have allocated space in
7172 .dynbss for the symbol and thus dyn_relocs for this
7173 symbol should be discarded.
7174 If we get here we know we are making a PLT entry for this
7175 symbol, and in an executable we'd normally resolve
7176 relocations against this symbol to the PLT entry. Allow
7177 dynamic relocs if the reference is weak, and the dynamic
7178 relocs will not cause text relocation. */
7179 else if (!h->ref_regular_nonweak
7181 && h->type != STT_GNU_IFUNC
7182 && !readonly_dynrelocs (h))
7185 /* If making a plt entry, then we don't need copy relocs. */
7190 h->plt.plist = NULL;
7192 /* If this is a weak symbol, and there is a real definition, the
7193 processor independent code will have arranged for us to see the
7194 real definition first, and we can just use the same value. */
7195 if (h->u.weakdef != NULL)
7197 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7198 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7199 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7200 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7201 if (ELIMINATE_COPY_RELOCS)
7202 h->non_got_ref = h->u.weakdef->non_got_ref;
7206 /* If we are creating a shared library, we must presume that the
7207 only references to the symbol are via the global offset table.
7208 For such cases we need not do anything here; the relocations will
7209 be handled correctly by relocate_section. */
7210 if (bfd_link_pic (info))
7213 /* If there are no references to this symbol that do not use the
7214 GOT, we don't need to generate a copy reloc. */
7215 if (!h->non_got_ref)
7218 /* Don't generate a copy reloc for symbols defined in the executable. */
7219 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7222 /* If -z nocopyreloc was given, don't generate them either. */
7223 if (info->nocopyreloc)
7229 /* If we didn't find any dynamic relocs in read-only sections, then
7230 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7231 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7237 /* Protected variables do not work with .dynbss. The copy in
7238 .dynbss won't be used by the shared library with the protected
7239 definition for the variable. Text relocations are preferable
7240 to an incorrect program. */
7241 if (h->protected_def)
7247 if (h->plt.plist != NULL)
7249 /* We should never get here, but unfortunately there are versions
7250 of gcc out there that improperly (for this ABI) put initialized
7251 function pointers, vtable refs and suchlike in read-only
7252 sections. Allow them to proceed, but warn that this might
7253 break at runtime. */
7254 info->callbacks->einfo
7255 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7256 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7257 h->root.root.string);
7260 /* This is a reference to a symbol defined by a dynamic object which
7261 is not a function. */
7263 /* We must allocate the symbol in our .dynbss section, which will
7264 become part of the .bss section of the executable. There will be
7265 an entry for this symbol in the .dynsym section. The dynamic
7266 object will contain position independent code, so all references
7267 from the dynamic object to this symbol will go through the global
7268 offset table. The dynamic linker will use the .dynsym entry to
7269 determine the address it must put in the global offset table, so
7270 both the dynamic object and the regular object will refer to the
7271 same memory location for the variable. */
7273 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7274 to copy the initial value out of the dynamic object and into the
7275 runtime process image. We need to remember the offset into the
7276 .rela.bss section we are going to use. */
7277 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7279 htab->relbss->size += sizeof (Elf64_External_Rela);
7285 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7288 /* If given a function descriptor symbol, hide both the function code
7289 sym and the descriptor. */
7291 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7292 struct elf_link_hash_entry *h,
7293 bfd_boolean force_local)
7295 struct ppc_link_hash_entry *eh;
7296 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7298 eh = (struct ppc_link_hash_entry *) h;
7299 if (eh->is_func_descriptor)
7301 struct ppc_link_hash_entry *fh = eh->oh;
7306 struct ppc_link_hash_table *htab;
7309 /* We aren't supposed to use alloca in BFD because on
7310 systems which do not have alloca the version in libiberty
7311 calls xmalloc, which might cause the program to crash
7312 when it runs out of memory. This function doesn't have a
7313 return status, so there's no way to gracefully return an
7314 error. So cheat. We know that string[-1] can be safely
7315 accessed; It's either a string in an ELF string table,
7316 or allocated in an objalloc structure. */
7318 p = eh->elf.root.root.string - 1;
7321 htab = ppc_hash_table (info);
7325 fh = (struct ppc_link_hash_entry *)
7326 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7329 /* Unfortunately, if it so happens that the string we were
7330 looking for was allocated immediately before this string,
7331 then we overwrote the string terminator. That's the only
7332 reason the lookup should fail. */
7335 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7336 while (q >= eh->elf.root.root.string && *q == *p)
7338 if (q < eh->elf.root.root.string && *p == '.')
7339 fh = (struct ppc_link_hash_entry *)
7340 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7349 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7354 get_sym_h (struct elf_link_hash_entry **hp,
7355 Elf_Internal_Sym **symp,
7357 unsigned char **tls_maskp,
7358 Elf_Internal_Sym **locsymsp,
7359 unsigned long r_symndx,
7362 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7364 if (r_symndx >= symtab_hdr->sh_info)
7366 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7367 struct elf_link_hash_entry *h;
7369 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7370 h = elf_follow_link (h);
7378 if (symsecp != NULL)
7380 asection *symsec = NULL;
7381 if (h->root.type == bfd_link_hash_defined
7382 || h->root.type == bfd_link_hash_defweak)
7383 symsec = h->root.u.def.section;
7387 if (tls_maskp != NULL)
7389 struct ppc_link_hash_entry *eh;
7391 eh = (struct ppc_link_hash_entry *) h;
7392 *tls_maskp = &eh->tls_mask;
7397 Elf_Internal_Sym *sym;
7398 Elf_Internal_Sym *locsyms = *locsymsp;
7400 if (locsyms == NULL)
7402 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7403 if (locsyms == NULL)
7404 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7405 symtab_hdr->sh_info,
7406 0, NULL, NULL, NULL);
7407 if (locsyms == NULL)
7409 *locsymsp = locsyms;
7411 sym = locsyms + r_symndx;
7419 if (symsecp != NULL)
7420 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7422 if (tls_maskp != NULL)
7424 struct got_entry **lgot_ents;
7425 unsigned char *tls_mask;
7428 lgot_ents = elf_local_got_ents (ibfd);
7429 if (lgot_ents != NULL)
7431 struct plt_entry **local_plt = (struct plt_entry **)
7432 (lgot_ents + symtab_hdr->sh_info);
7433 unsigned char *lgot_masks = (unsigned char *)
7434 (local_plt + symtab_hdr->sh_info);
7435 tls_mask = &lgot_masks[r_symndx];
7437 *tls_maskp = tls_mask;
7443 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7444 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7445 type suitable for optimization, and 1 otherwise. */
7448 get_tls_mask (unsigned char **tls_maskp,
7449 unsigned long *toc_symndx,
7450 bfd_vma *toc_addend,
7451 Elf_Internal_Sym **locsymsp,
7452 const Elf_Internal_Rela *rel,
7455 unsigned long r_symndx;
7457 struct elf_link_hash_entry *h;
7458 Elf_Internal_Sym *sym;
7462 r_symndx = ELF64_R_SYM (rel->r_info);
7463 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7466 if ((*tls_maskp != NULL && **tls_maskp != 0)
7468 || ppc64_elf_section_data (sec) == NULL
7469 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7472 /* Look inside a TOC section too. */
7475 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7476 off = h->root.u.def.value;
7479 off = sym->st_value;
7480 off += rel->r_addend;
7481 BFD_ASSERT (off % 8 == 0);
7482 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7483 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7484 if (toc_symndx != NULL)
7485 *toc_symndx = r_symndx;
7486 if (toc_addend != NULL)
7487 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7488 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7490 if ((h == NULL || is_static_defined (h))
7491 && (next_r == -1 || next_r == -2))
7496 /* Find (or create) an entry in the tocsave hash table. */
7498 static struct tocsave_entry *
7499 tocsave_find (struct ppc_link_hash_table *htab,
7500 enum insert_option insert,
7501 Elf_Internal_Sym **local_syms,
7502 const Elf_Internal_Rela *irela,
7505 unsigned long r_indx;
7506 struct elf_link_hash_entry *h;
7507 Elf_Internal_Sym *sym;
7508 struct tocsave_entry ent, *p;
7510 struct tocsave_entry **slot;
7512 r_indx = ELF64_R_SYM (irela->r_info);
7513 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7515 if (ent.sec == NULL || ent.sec->output_section == NULL)
7517 (*_bfd_error_handler)
7518 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7523 ent.offset = h->root.u.def.value;
7525 ent.offset = sym->st_value;
7526 ent.offset += irela->r_addend;
7528 hash = tocsave_htab_hash (&ent);
7529 slot = ((struct tocsave_entry **)
7530 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7536 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7545 /* Adjust all global syms defined in opd sections. In gcc generated
7546 code for the old ABI, these will already have been done. */
7549 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7551 struct ppc_link_hash_entry *eh;
7553 struct _opd_sec_data *opd;
7555 if (h->root.type == bfd_link_hash_indirect)
7558 if (h->root.type != bfd_link_hash_defined
7559 && h->root.type != bfd_link_hash_defweak)
7562 eh = (struct ppc_link_hash_entry *) h;
7563 if (eh->adjust_done)
7566 sym_sec = eh->elf.root.u.def.section;
7567 opd = get_opd_info (sym_sec);
7568 if (opd != NULL && opd->adjust != NULL)
7570 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7573 /* This entry has been deleted. */
7574 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7577 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7578 if (discarded_section (dsec))
7580 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7584 eh->elf.root.u.def.value = 0;
7585 eh->elf.root.u.def.section = dsec;
7588 eh->elf.root.u.def.value += adjust;
7589 eh->adjust_done = 1;
7594 /* Handles decrementing dynamic reloc counts for the reloc specified by
7595 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7596 have already been determined. */
7599 dec_dynrel_count (bfd_vma r_info,
7601 struct bfd_link_info *info,
7602 Elf_Internal_Sym **local_syms,
7603 struct elf_link_hash_entry *h,
7604 Elf_Internal_Sym *sym)
7606 enum elf_ppc64_reloc_type r_type;
7607 asection *sym_sec = NULL;
7609 /* Can this reloc be dynamic? This switch, and later tests here
7610 should be kept in sync with the code in check_relocs. */
7611 r_type = ELF64_R_TYPE (r_info);
7617 case R_PPC64_TPREL16:
7618 case R_PPC64_TPREL16_LO:
7619 case R_PPC64_TPREL16_HI:
7620 case R_PPC64_TPREL16_HA:
7621 case R_PPC64_TPREL16_DS:
7622 case R_PPC64_TPREL16_LO_DS:
7623 case R_PPC64_TPREL16_HIGH:
7624 case R_PPC64_TPREL16_HIGHA:
7625 case R_PPC64_TPREL16_HIGHER:
7626 case R_PPC64_TPREL16_HIGHERA:
7627 case R_PPC64_TPREL16_HIGHEST:
7628 case R_PPC64_TPREL16_HIGHESTA:
7629 if (!bfd_link_pic (info))
7632 case R_PPC64_TPREL64:
7633 case R_PPC64_DTPMOD64:
7634 case R_PPC64_DTPREL64:
7635 case R_PPC64_ADDR64:
7639 case R_PPC64_ADDR14:
7640 case R_PPC64_ADDR14_BRNTAKEN:
7641 case R_PPC64_ADDR14_BRTAKEN:
7642 case R_PPC64_ADDR16:
7643 case R_PPC64_ADDR16_DS:
7644 case R_PPC64_ADDR16_HA:
7645 case R_PPC64_ADDR16_HI:
7646 case R_PPC64_ADDR16_HIGH:
7647 case R_PPC64_ADDR16_HIGHA:
7648 case R_PPC64_ADDR16_HIGHER:
7649 case R_PPC64_ADDR16_HIGHERA:
7650 case R_PPC64_ADDR16_HIGHEST:
7651 case R_PPC64_ADDR16_HIGHESTA:
7652 case R_PPC64_ADDR16_LO:
7653 case R_PPC64_ADDR16_LO_DS:
7654 case R_PPC64_ADDR24:
7655 case R_PPC64_ADDR32:
7656 case R_PPC64_UADDR16:
7657 case R_PPC64_UADDR32:
7658 case R_PPC64_UADDR64:
7663 if (local_syms != NULL)
7665 unsigned long r_symndx;
7666 bfd *ibfd = sec->owner;
7668 r_symndx = ELF64_R_SYM (r_info);
7669 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7673 if ((bfd_link_pic (info)
7674 && (must_be_dyn_reloc (info, r_type)
7676 && (!SYMBOLIC_BIND (info, h)
7677 || h->root.type == bfd_link_hash_defweak
7678 || !h->def_regular))))
7679 || (ELIMINATE_COPY_RELOCS
7680 && !bfd_link_pic (info)
7682 && (h->root.type == bfd_link_hash_defweak
7683 || !h->def_regular)))
7690 struct elf_dyn_relocs *p;
7691 struct elf_dyn_relocs **pp;
7692 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7694 /* elf_gc_sweep may have already removed all dyn relocs associated
7695 with local syms for a given section. Also, symbol flags are
7696 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7697 report a dynreloc miscount. */
7698 if (*pp == NULL && info->gc_sections)
7701 while ((p = *pp) != NULL)
7705 if (!must_be_dyn_reloc (info, r_type))
7717 struct ppc_dyn_relocs *p;
7718 struct ppc_dyn_relocs **pp;
7720 bfd_boolean is_ifunc;
7722 if (local_syms == NULL)
7723 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7724 if (sym_sec == NULL)
7727 vpp = &elf_section_data (sym_sec)->local_dynrel;
7728 pp = (struct ppc_dyn_relocs **) vpp;
7730 if (*pp == NULL && info->gc_sections)
7733 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7734 while ((p = *pp) != NULL)
7736 if (p->sec == sec && p->ifunc == is_ifunc)
7747 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7749 bfd_set_error (bfd_error_bad_value);
7753 /* Remove unused Official Procedure Descriptor entries. Currently we
7754 only remove those associated with functions in discarded link-once
7755 sections, or weakly defined functions that have been overridden. It
7756 would be possible to remove many more entries for statically linked
7760 ppc64_elf_edit_opd (struct bfd_link_info *info)
7763 bfd_boolean some_edited = FALSE;
7764 asection *need_pad = NULL;
7765 struct ppc_link_hash_table *htab;
7767 htab = ppc_hash_table (info);
7771 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7774 Elf_Internal_Rela *relstart, *rel, *relend;
7775 Elf_Internal_Shdr *symtab_hdr;
7776 Elf_Internal_Sym *local_syms;
7777 struct _opd_sec_data *opd;
7778 bfd_boolean need_edit, add_aux_fields, broken;
7779 bfd_size_type cnt_16b = 0;
7781 if (!is_ppc64_elf (ibfd))
7784 sec = bfd_get_section_by_name (ibfd, ".opd");
7785 if (sec == NULL || sec->size == 0)
7788 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7791 if (sec->output_section == bfd_abs_section_ptr)
7794 /* Look through the section relocs. */
7795 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7799 symtab_hdr = &elf_symtab_hdr (ibfd);
7801 /* Read the relocations. */
7802 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7804 if (relstart == NULL)
7807 /* First run through the relocs to check they are sane, and to
7808 determine whether we need to edit this opd section. */
7812 relend = relstart + sec->reloc_count;
7813 for (rel = relstart; rel < relend; )
7815 enum elf_ppc64_reloc_type r_type;
7816 unsigned long r_symndx;
7818 struct elf_link_hash_entry *h;
7819 Elf_Internal_Sym *sym;
7822 /* .opd contains an array of 16 or 24 byte entries. We're
7823 only interested in the reloc pointing to a function entry
7825 offset = rel->r_offset;
7826 if (rel + 1 == relend
7827 || rel[1].r_offset != offset + 8)
7829 /* If someone messes with .opd alignment then after a
7830 "ld -r" we might have padding in the middle of .opd.
7831 Also, there's nothing to prevent someone putting
7832 something silly in .opd with the assembler. No .opd
7833 optimization for them! */
7835 (*_bfd_error_handler)
7836 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7841 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7842 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7844 (*_bfd_error_handler)
7845 (_("%B: unexpected reloc type %u in .opd section"),
7851 r_symndx = ELF64_R_SYM (rel->r_info);
7852 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7856 if (sym_sec == NULL || sym_sec->owner == NULL)
7858 const char *sym_name;
7860 sym_name = h->root.root.string;
7862 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7865 (*_bfd_error_handler)
7866 (_("%B: undefined sym `%s' in .opd section"),
7872 /* opd entries are always for functions defined in the
7873 current input bfd. If the symbol isn't defined in the
7874 input bfd, then we won't be using the function in this
7875 bfd; It must be defined in a linkonce section in another
7876 bfd, or is weak. It's also possible that we are
7877 discarding the function due to a linker script /DISCARD/,
7878 which we test for via the output_section. */
7879 if (sym_sec->owner != ibfd
7880 || sym_sec->output_section == bfd_abs_section_ptr)
7884 if (rel + 1 == relend
7885 || (rel + 2 < relend
7886 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7891 if (sec->size == offset + 24)
7896 if (sec->size == offset + 16)
7903 else if (rel + 1 < relend
7904 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7905 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7907 if (rel[0].r_offset == offset + 16)
7909 else if (rel[0].r_offset != offset + 24)
7916 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7918 if (!broken && (need_edit || add_aux_fields))
7920 Elf_Internal_Rela *write_rel;
7921 Elf_Internal_Shdr *rel_hdr;
7922 bfd_byte *rptr, *wptr;
7923 bfd_byte *new_contents;
7926 new_contents = NULL;
7927 amt = OPD_NDX (sec->size) * sizeof (long);
7928 opd = &ppc64_elf_section_data (sec)->u.opd;
7929 opd->adjust = bfd_zalloc (sec->owner, amt);
7930 if (opd->adjust == NULL)
7932 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7934 /* This seems a waste of time as input .opd sections are all
7935 zeros as generated by gcc, but I suppose there's no reason
7936 this will always be so. We might start putting something in
7937 the third word of .opd entries. */
7938 if ((sec->flags & SEC_IN_MEMORY) == 0)
7941 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7946 if (local_syms != NULL
7947 && symtab_hdr->contents != (unsigned char *) local_syms)
7949 if (elf_section_data (sec)->relocs != relstart)
7953 sec->contents = loc;
7954 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7957 elf_section_data (sec)->relocs = relstart;
7959 new_contents = sec->contents;
7962 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7963 if (new_contents == NULL)
7967 wptr = new_contents;
7968 rptr = sec->contents;
7969 write_rel = relstart;
7970 for (rel = relstart; rel < relend; )
7972 unsigned long r_symndx;
7974 struct elf_link_hash_entry *h;
7975 struct ppc_link_hash_entry *fdh = NULL;
7976 Elf_Internal_Sym *sym;
7978 Elf_Internal_Rela *next_rel;
7981 r_symndx = ELF64_R_SYM (rel->r_info);
7982 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7987 if (next_rel + 1 == relend
7988 || (next_rel + 2 < relend
7989 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
7992 /* See if the .opd entry is full 24 byte or
7993 16 byte (with fd_aux entry overlapped with next
7996 if (next_rel == relend)
7998 if (sec->size == rel->r_offset + 16)
8001 else if (next_rel->r_offset == rel->r_offset + 16)
8005 && h->root.root.string[0] == '.')
8007 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
8009 && fdh->elf.root.type != bfd_link_hash_defined
8010 && fdh->elf.root.type != bfd_link_hash_defweak)
8014 skip = (sym_sec->owner != ibfd
8015 || sym_sec->output_section == bfd_abs_section_ptr);
8018 if (fdh != NULL && sym_sec->owner == ibfd)
8020 /* Arrange for the function descriptor sym
8022 fdh->elf.root.u.def.value = 0;
8023 fdh->elf.root.u.def.section = sym_sec;
8025 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8027 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8032 if (!dec_dynrel_count (rel->r_info, sec, info,
8036 if (++rel == next_rel)
8039 r_symndx = ELF64_R_SYM (rel->r_info);
8040 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8047 /* We'll be keeping this opd entry. */
8052 /* Redefine the function descriptor symbol to
8053 this location in the opd section. It is
8054 necessary to update the value here rather
8055 than using an array of adjustments as we do
8056 for local symbols, because various places
8057 in the generic ELF code use the value
8058 stored in u.def.value. */
8059 fdh->elf.root.u.def.value = wptr - new_contents;
8060 fdh->adjust_done = 1;
8063 /* Local syms are a bit tricky. We could
8064 tweak them as they can be cached, but
8065 we'd need to look through the local syms
8066 for the function descriptor sym which we
8067 don't have at the moment. So keep an
8068 array of adjustments. */
8069 adjust = (wptr - new_contents) - (rptr - sec->contents);
8070 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8073 memcpy (wptr, rptr, opd_ent_size);
8074 wptr += opd_ent_size;
8075 if (add_aux_fields && opd_ent_size == 16)
8077 memset (wptr, '\0', 8);
8081 /* We need to adjust any reloc offsets to point to the
8083 for ( ; rel != next_rel; ++rel)
8085 rel->r_offset += adjust;
8086 if (write_rel != rel)
8087 memcpy (write_rel, rel, sizeof (*rel));
8092 rptr += opd_ent_size;
8095 sec->size = wptr - new_contents;
8096 sec->reloc_count = write_rel - relstart;
8099 free (sec->contents);
8100 sec->contents = new_contents;
8103 /* Fudge the header size too, as this is used later in
8104 elf_bfd_final_link if we are emitting relocs. */
8105 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8106 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8109 else if (elf_section_data (sec)->relocs != relstart)
8112 if (local_syms != NULL
8113 && symtab_hdr->contents != (unsigned char *) local_syms)
8115 if (!info->keep_memory)
8118 symtab_hdr->contents = (unsigned char *) local_syms;
8123 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8125 /* If we are doing a final link and the last .opd entry is just 16 byte
8126 long, add a 8 byte padding after it. */
8127 if (need_pad != NULL && !bfd_link_relocatable (info))
8131 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8133 BFD_ASSERT (need_pad->size > 0);
8135 p = bfd_malloc (need_pad->size + 8);
8139 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8140 p, 0, need_pad->size))
8143 need_pad->contents = p;
8144 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8148 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8152 need_pad->contents = p;
8155 memset (need_pad->contents + need_pad->size, 0, 8);
8156 need_pad->size += 8;
8162 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8165 ppc64_elf_tls_setup (struct bfd_link_info *info)
8167 struct ppc_link_hash_table *htab;
8169 htab = ppc_hash_table (info);
8173 if (abiversion (info->output_bfd) == 1)
8176 if (htab->params->no_multi_toc)
8177 htab->do_multi_toc = 0;
8178 else if (!htab->do_multi_toc)
8179 htab->params->no_multi_toc = 1;
8181 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8182 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8183 FALSE, FALSE, TRUE));
8184 /* Move dynamic linking info to the function descriptor sym. */
8185 if (htab->tls_get_addr != NULL)
8186 func_desc_adjust (&htab->tls_get_addr->elf, info);
8187 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8188 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8189 FALSE, FALSE, TRUE));
8190 if (htab->params->tls_get_addr_opt)
8192 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8194 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8195 FALSE, FALSE, TRUE);
8197 func_desc_adjust (opt, info);
8198 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8199 FALSE, FALSE, TRUE);
8201 && (opt_fd->root.type == bfd_link_hash_defined
8202 || opt_fd->root.type == bfd_link_hash_defweak))
8204 /* If glibc supports an optimized __tls_get_addr call stub,
8205 signalled by the presence of __tls_get_addr_opt, and we'll
8206 be calling __tls_get_addr via a plt call stub, then
8207 make __tls_get_addr point to __tls_get_addr_opt. */
8208 tga_fd = &htab->tls_get_addr_fd->elf;
8209 if (htab->elf.dynamic_sections_created
8211 && (tga_fd->type == STT_FUNC
8212 || tga_fd->needs_plt)
8213 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8214 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8215 && tga_fd->root.type == bfd_link_hash_undefweak)))
8217 struct plt_entry *ent;
8219 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8220 if (ent->plt.refcount > 0)
8224 tga_fd->root.type = bfd_link_hash_indirect;
8225 tga_fd->root.u.i.link = &opt_fd->root;
8226 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8227 if (opt_fd->dynindx != -1)
8229 /* Use __tls_get_addr_opt in dynamic relocations. */
8230 opt_fd->dynindx = -1;
8231 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8232 opt_fd->dynstr_index);
8233 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8236 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8237 tga = &htab->tls_get_addr->elf;
8238 if (opt != NULL && tga != NULL)
8240 tga->root.type = bfd_link_hash_indirect;
8241 tga->root.u.i.link = &opt->root;
8242 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8243 _bfd_elf_link_hash_hide_symbol (info, opt,
8245 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8247 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8248 htab->tls_get_addr_fd->is_func_descriptor = 1;
8249 if (htab->tls_get_addr != NULL)
8251 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8252 htab->tls_get_addr->is_func = 1;
8257 else if (htab->params->tls_get_addr_opt < 0)
8258 htab->params->tls_get_addr_opt = 0;
8260 return _bfd_elf_tls_setup (info->output_bfd, info);
8263 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8267 branch_reloc_hash_match (const bfd *ibfd,
8268 const Elf_Internal_Rela *rel,
8269 const struct ppc_link_hash_entry *hash1,
8270 const struct ppc_link_hash_entry *hash2)
8272 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8273 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8274 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8276 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8278 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8279 struct elf_link_hash_entry *h;
8281 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8282 h = elf_follow_link (h);
8283 if (h == &hash1->elf || h == &hash2->elf)
8289 /* Run through all the TLS relocs looking for optimization
8290 opportunities. The linker has been hacked (see ppc64elf.em) to do
8291 a preliminary section layout so that we know the TLS segment
8292 offsets. We can't optimize earlier because some optimizations need
8293 to know the tp offset, and we need to optimize before allocating
8294 dynamic relocations. */
8297 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8301 struct ppc_link_hash_table *htab;
8302 unsigned char *toc_ref;
8305 if (!bfd_link_executable (info))
8308 htab = ppc_hash_table (info);
8312 /* Make two passes over the relocs. On the first pass, mark toc
8313 entries involved with tls relocs, and check that tls relocs
8314 involved in setting up a tls_get_addr call are indeed followed by
8315 such a call. If they are not, we can't do any tls optimization.
8316 On the second pass twiddle tls_mask flags to notify
8317 relocate_section that optimization can be done, and adjust got
8318 and plt refcounts. */
8320 for (pass = 0; pass < 2; ++pass)
8321 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8323 Elf_Internal_Sym *locsyms = NULL;
8324 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8326 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8327 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8329 Elf_Internal_Rela *relstart, *rel, *relend;
8330 bfd_boolean found_tls_get_addr_arg = 0;
8332 /* Read the relocations. */
8333 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8335 if (relstart == NULL)
8341 relend = relstart + sec->reloc_count;
8342 for (rel = relstart; rel < relend; rel++)
8344 enum elf_ppc64_reloc_type r_type;
8345 unsigned long r_symndx;
8346 struct elf_link_hash_entry *h;
8347 Elf_Internal_Sym *sym;
8349 unsigned char *tls_mask;
8350 unsigned char tls_set, tls_clear, tls_type = 0;
8352 bfd_boolean ok_tprel, is_local;
8353 long toc_ref_index = 0;
8354 int expecting_tls_get_addr = 0;
8355 bfd_boolean ret = FALSE;
8357 r_symndx = ELF64_R_SYM (rel->r_info);
8358 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8362 if (elf_section_data (sec)->relocs != relstart)
8364 if (toc_ref != NULL)
8367 && (elf_symtab_hdr (ibfd).contents
8368 != (unsigned char *) locsyms))
8375 if (h->root.type == bfd_link_hash_defined
8376 || h->root.type == bfd_link_hash_defweak)
8377 value = h->root.u.def.value;
8378 else if (h->root.type == bfd_link_hash_undefweak)
8382 found_tls_get_addr_arg = 0;
8387 /* Symbols referenced by TLS relocs must be of type
8388 STT_TLS. So no need for .opd local sym adjust. */
8389 value = sym->st_value;
8398 && h->root.type == bfd_link_hash_undefweak)
8400 else if (sym_sec != NULL
8401 && sym_sec->output_section != NULL)
8403 value += sym_sec->output_offset;
8404 value += sym_sec->output_section->vma;
8405 value -= htab->elf.tls_sec->vma;
8406 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8407 < (bfd_vma) 1 << 32);
8411 r_type = ELF64_R_TYPE (rel->r_info);
8412 /* If this section has old-style __tls_get_addr calls
8413 without marker relocs, then check that each
8414 __tls_get_addr call reloc is preceded by a reloc
8415 that conceivably belongs to the __tls_get_addr arg
8416 setup insn. If we don't find matching arg setup
8417 relocs, don't do any tls optimization. */
8419 && sec->has_tls_get_addr_call
8421 && (h == &htab->tls_get_addr->elf
8422 || h == &htab->tls_get_addr_fd->elf)
8423 && !found_tls_get_addr_arg
8424 && is_branch_reloc (r_type))
8426 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8427 "TLS optimization disabled\n"),
8428 ibfd, sec, rel->r_offset);
8433 found_tls_get_addr_arg = 0;
8436 case R_PPC64_GOT_TLSLD16:
8437 case R_PPC64_GOT_TLSLD16_LO:
8438 expecting_tls_get_addr = 1;
8439 found_tls_get_addr_arg = 1;
8442 case R_PPC64_GOT_TLSLD16_HI:
8443 case R_PPC64_GOT_TLSLD16_HA:
8444 /* These relocs should never be against a symbol
8445 defined in a shared lib. Leave them alone if
8446 that turns out to be the case. */
8453 tls_type = TLS_TLS | TLS_LD;
8456 case R_PPC64_GOT_TLSGD16:
8457 case R_PPC64_GOT_TLSGD16_LO:
8458 expecting_tls_get_addr = 1;
8459 found_tls_get_addr_arg = 1;
8462 case R_PPC64_GOT_TLSGD16_HI:
8463 case R_PPC64_GOT_TLSGD16_HA:
8469 tls_set = TLS_TLS | TLS_TPRELGD;
8471 tls_type = TLS_TLS | TLS_GD;
8474 case R_PPC64_GOT_TPREL16_DS:
8475 case R_PPC64_GOT_TPREL16_LO_DS:
8476 case R_PPC64_GOT_TPREL16_HI:
8477 case R_PPC64_GOT_TPREL16_HA:
8482 tls_clear = TLS_TPREL;
8483 tls_type = TLS_TLS | TLS_TPREL;
8490 found_tls_get_addr_arg = 1;
8495 case R_PPC64_TOC16_LO:
8496 if (sym_sec == NULL || sym_sec != toc)
8499 /* Mark this toc entry as referenced by a TLS
8500 code sequence. We can do that now in the
8501 case of R_PPC64_TLS, and after checking for
8502 tls_get_addr for the TOC16 relocs. */
8503 if (toc_ref == NULL)
8504 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8505 if (toc_ref == NULL)
8509 value = h->root.u.def.value;
8511 value = sym->st_value;
8512 value += rel->r_addend;
8515 BFD_ASSERT (value < toc->size
8516 && toc->output_offset % 8 == 0);
8517 toc_ref_index = (value + toc->output_offset) / 8;
8518 if (r_type == R_PPC64_TLS
8519 || r_type == R_PPC64_TLSGD
8520 || r_type == R_PPC64_TLSLD)
8522 toc_ref[toc_ref_index] = 1;
8526 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8531 expecting_tls_get_addr = 2;
8534 case R_PPC64_TPREL64:
8538 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8543 tls_set = TLS_EXPLICIT;
8544 tls_clear = TLS_TPREL;
8549 case R_PPC64_DTPMOD64:
8553 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8555 if (rel + 1 < relend
8557 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8558 && rel[1].r_offset == rel->r_offset + 8)
8562 tls_set = TLS_EXPLICIT | TLS_GD;
8565 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8574 tls_set = TLS_EXPLICIT;
8585 if (!expecting_tls_get_addr
8586 || !sec->has_tls_get_addr_call)
8589 if (rel + 1 < relend
8590 && branch_reloc_hash_match (ibfd, rel + 1,
8592 htab->tls_get_addr_fd))
8594 if (expecting_tls_get_addr == 2)
8596 /* Check for toc tls entries. */
8597 unsigned char *toc_tls;
8600 retval = get_tls_mask (&toc_tls, NULL, NULL,
8605 if (toc_tls != NULL)
8607 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8608 found_tls_get_addr_arg = 1;
8610 toc_ref[toc_ref_index] = 1;
8616 if (expecting_tls_get_addr != 1)
8619 /* Uh oh, we didn't find the expected call. We
8620 could just mark this symbol to exclude it
8621 from tls optimization but it's safer to skip
8622 the entire optimization. */
8623 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8624 "TLS optimization disabled\n"),
8625 ibfd, sec, rel->r_offset);
8630 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8632 struct plt_entry *ent;
8633 for (ent = htab->tls_get_addr->elf.plt.plist;
8636 if (ent->addend == 0)
8638 if (ent->plt.refcount > 0)
8640 ent->plt.refcount -= 1;
8641 expecting_tls_get_addr = 0;
8647 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8649 struct plt_entry *ent;
8650 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8653 if (ent->addend == 0)
8655 if (ent->plt.refcount > 0)
8656 ent->plt.refcount -= 1;
8664 if ((tls_set & TLS_EXPLICIT) == 0)
8666 struct got_entry *ent;
8668 /* Adjust got entry for this reloc. */
8672 ent = elf_local_got_ents (ibfd)[r_symndx];
8674 for (; ent != NULL; ent = ent->next)
8675 if (ent->addend == rel->r_addend
8676 && ent->owner == ibfd
8677 && ent->tls_type == tls_type)
8684 /* We managed to get rid of a got entry. */
8685 if (ent->got.refcount > 0)
8686 ent->got.refcount -= 1;
8691 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8692 we'll lose one or two dyn relocs. */
8693 if (!dec_dynrel_count (rel->r_info, sec, info,
8697 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8699 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8705 *tls_mask |= tls_set;
8706 *tls_mask &= ~tls_clear;
8709 if (elf_section_data (sec)->relocs != relstart)
8714 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8716 if (!info->keep_memory)
8719 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8723 if (toc_ref != NULL)
8728 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8729 the values of any global symbols in a toc section that has been
8730 edited. Globals in toc sections should be a rarity, so this function
8731 sets a flag if any are found in toc sections other than the one just
8732 edited, so that futher hash table traversals can be avoided. */
8734 struct adjust_toc_info
8737 unsigned long *skip;
8738 bfd_boolean global_toc_syms;
8741 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8744 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8746 struct ppc_link_hash_entry *eh;
8747 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8750 if (h->root.type != bfd_link_hash_defined
8751 && h->root.type != bfd_link_hash_defweak)
8754 eh = (struct ppc_link_hash_entry *) h;
8755 if (eh->adjust_done)
8758 if (eh->elf.root.u.def.section == toc_inf->toc)
8760 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8761 i = toc_inf->toc->rawsize >> 3;
8763 i = eh->elf.root.u.def.value >> 3;
8765 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8767 (*_bfd_error_handler)
8768 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8771 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8772 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8775 eh->elf.root.u.def.value -= toc_inf->skip[i];
8776 eh->adjust_done = 1;
8778 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8779 toc_inf->global_toc_syms = TRUE;
8784 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8787 ok_lo_toc_insn (unsigned int insn)
8789 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8790 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8791 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8792 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8793 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8794 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8795 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8796 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8797 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8798 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8799 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8800 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8801 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8802 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8803 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8805 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8806 && ((insn & 3) == 0 || (insn & 3) == 3))
8807 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8810 /* Examine all relocs referencing .toc sections in order to remove
8811 unused .toc entries. */
8814 ppc64_elf_edit_toc (struct bfd_link_info *info)
8817 struct adjust_toc_info toc_inf;
8818 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8820 htab->do_toc_opt = 1;
8821 toc_inf.global_toc_syms = TRUE;
8822 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8824 asection *toc, *sec;
8825 Elf_Internal_Shdr *symtab_hdr;
8826 Elf_Internal_Sym *local_syms;
8827 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8828 unsigned long *skip, *drop;
8829 unsigned char *used;
8830 unsigned char *keep, last, some_unused;
8832 if (!is_ppc64_elf (ibfd))
8835 toc = bfd_get_section_by_name (ibfd, ".toc");
8838 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8839 || discarded_section (toc))
8844 symtab_hdr = &elf_symtab_hdr (ibfd);
8846 /* Look at sections dropped from the final link. */
8849 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8851 if (sec->reloc_count == 0
8852 || !discarded_section (sec)
8853 || get_opd_info (sec)
8854 || (sec->flags & SEC_ALLOC) == 0
8855 || (sec->flags & SEC_DEBUGGING) != 0)
8858 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8859 if (relstart == NULL)
8862 /* Run through the relocs to see which toc entries might be
8864 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8866 enum elf_ppc64_reloc_type r_type;
8867 unsigned long r_symndx;
8869 struct elf_link_hash_entry *h;
8870 Elf_Internal_Sym *sym;
8873 r_type = ELF64_R_TYPE (rel->r_info);
8880 case R_PPC64_TOC16_LO:
8881 case R_PPC64_TOC16_HI:
8882 case R_PPC64_TOC16_HA:
8883 case R_PPC64_TOC16_DS:
8884 case R_PPC64_TOC16_LO_DS:
8888 r_symndx = ELF64_R_SYM (rel->r_info);
8889 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8897 val = h->root.u.def.value;
8899 val = sym->st_value;
8900 val += rel->r_addend;
8902 if (val >= toc->size)
8905 /* Anything in the toc ought to be aligned to 8 bytes.
8906 If not, don't mark as unused. */
8912 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8917 skip[val >> 3] = ref_from_discarded;
8920 if (elf_section_data (sec)->relocs != relstart)
8924 /* For largetoc loads of address constants, we can convert
8925 . addis rx,2,addr@got@ha
8926 . ld ry,addr@got@l(rx)
8928 . addis rx,2,addr@toc@ha
8929 . addi ry,rx,addr@toc@l
8930 when addr is within 2G of the toc pointer. This then means
8931 that the word storing "addr" in the toc is no longer needed. */
8933 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8934 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8935 && toc->reloc_count != 0)
8937 /* Read toc relocs. */
8938 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8940 if (toc_relocs == NULL)
8943 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8945 enum elf_ppc64_reloc_type r_type;
8946 unsigned long r_symndx;
8948 struct elf_link_hash_entry *h;
8949 Elf_Internal_Sym *sym;
8952 r_type = ELF64_R_TYPE (rel->r_info);
8953 if (r_type != R_PPC64_ADDR64)
8956 r_symndx = ELF64_R_SYM (rel->r_info);
8957 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8962 || sym_sec->output_section == NULL
8963 || discarded_section (sym_sec))
8966 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8971 if (h->type == STT_GNU_IFUNC)
8973 val = h->root.u.def.value;
8977 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8979 val = sym->st_value;
8981 val += rel->r_addend;
8982 val += sym_sec->output_section->vma + sym_sec->output_offset;
8984 /* We don't yet know the exact toc pointer value, but we
8985 know it will be somewhere in the toc section. Don't
8986 optimize if the difference from any possible toc
8987 pointer is outside [ff..f80008000, 7fff7fff]. */
8988 addr = toc->output_section->vma + TOC_BASE_OFF;
8989 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8992 addr = toc->output_section->vma + toc->output_section->rawsize;
8993 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8998 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9003 skip[rel->r_offset >> 3]
9004 |= can_optimize | ((rel - toc_relocs) << 2);
9011 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9015 if (local_syms != NULL
9016 && symtab_hdr->contents != (unsigned char *) local_syms)
9020 && elf_section_data (sec)->relocs != relstart)
9022 if (toc_relocs != NULL
9023 && elf_section_data (toc)->relocs != toc_relocs)
9030 /* Now check all kept sections that might reference the toc.
9031 Check the toc itself last. */
9032 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9035 sec = (sec == toc ? NULL
9036 : sec->next == NULL ? toc
9037 : sec->next == toc && toc->next ? toc->next
9042 if (sec->reloc_count == 0
9043 || discarded_section (sec)
9044 || get_opd_info (sec)
9045 || (sec->flags & SEC_ALLOC) == 0
9046 || (sec->flags & SEC_DEBUGGING) != 0)
9049 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9051 if (relstart == NULL)
9057 /* Mark toc entries referenced as used. */
9061 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9063 enum elf_ppc64_reloc_type r_type;
9064 unsigned long r_symndx;
9066 struct elf_link_hash_entry *h;
9067 Elf_Internal_Sym *sym;
9069 enum {no_check, check_lo, check_ha} insn_check;
9071 r_type = ELF64_R_TYPE (rel->r_info);
9075 insn_check = no_check;
9078 case R_PPC64_GOT_TLSLD16_HA:
9079 case R_PPC64_GOT_TLSGD16_HA:
9080 case R_PPC64_GOT_TPREL16_HA:
9081 case R_PPC64_GOT_DTPREL16_HA:
9082 case R_PPC64_GOT16_HA:
9083 case R_PPC64_TOC16_HA:
9084 insn_check = check_ha;
9087 case R_PPC64_GOT_TLSLD16_LO:
9088 case R_PPC64_GOT_TLSGD16_LO:
9089 case R_PPC64_GOT_TPREL16_LO_DS:
9090 case R_PPC64_GOT_DTPREL16_LO_DS:
9091 case R_PPC64_GOT16_LO:
9092 case R_PPC64_GOT16_LO_DS:
9093 case R_PPC64_TOC16_LO:
9094 case R_PPC64_TOC16_LO_DS:
9095 insn_check = check_lo;
9099 if (insn_check != no_check)
9101 bfd_vma off = rel->r_offset & ~3;
9102 unsigned char buf[4];
9105 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9110 insn = bfd_get_32 (ibfd, buf);
9111 if (insn_check == check_lo
9112 ? !ok_lo_toc_insn (insn)
9113 : ((insn & ((0x3f << 26) | 0x1f << 16))
9114 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9118 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9119 sprintf (str, "%#08x", insn);
9120 info->callbacks->einfo
9121 (_("%P: %H: toc optimization is not supported for"
9122 " %s instruction.\n"),
9123 ibfd, sec, rel->r_offset & ~3, str);
9130 case R_PPC64_TOC16_LO:
9131 case R_PPC64_TOC16_HI:
9132 case R_PPC64_TOC16_HA:
9133 case R_PPC64_TOC16_DS:
9134 case R_PPC64_TOC16_LO_DS:
9135 /* In case we're taking addresses of toc entries. */
9136 case R_PPC64_ADDR64:
9143 r_symndx = ELF64_R_SYM (rel->r_info);
9144 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9155 val = h->root.u.def.value;
9157 val = sym->st_value;
9158 val += rel->r_addend;
9160 if (val >= toc->size)
9163 if ((skip[val >> 3] & can_optimize) != 0)
9170 case R_PPC64_TOC16_HA:
9173 case R_PPC64_TOC16_LO_DS:
9174 off = rel->r_offset;
9175 off += (bfd_big_endian (ibfd) ? -2 : 3);
9176 if (!bfd_get_section_contents (ibfd, sec, &opc,
9182 if ((opc & (0x3f << 2)) == (58u << 2))
9187 /* Wrong sort of reloc, or not a ld. We may
9188 as well clear ref_from_discarded too. */
9195 /* For the toc section, we only mark as used if this
9196 entry itself isn't unused. */
9197 else if ((used[rel->r_offset >> 3]
9198 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9201 /* Do all the relocs again, to catch reference
9210 if (elf_section_data (sec)->relocs != relstart)
9214 /* Merge the used and skip arrays. Assume that TOC
9215 doublewords not appearing as either used or unused belong
9216 to to an entry more than one doubleword in size. */
9217 for (drop = skip, keep = used, last = 0, some_unused = 0;
9218 drop < skip + (toc->size + 7) / 8;
9223 *drop &= ~ref_from_discarded;
9224 if ((*drop & can_optimize) != 0)
9228 else if ((*drop & ref_from_discarded) != 0)
9231 last = ref_from_discarded;
9241 bfd_byte *contents, *src;
9243 Elf_Internal_Sym *sym;
9244 bfd_boolean local_toc_syms = FALSE;
9246 /* Shuffle the toc contents, and at the same time convert the
9247 skip array from booleans into offsets. */
9248 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9251 elf_section_data (toc)->this_hdr.contents = contents;
9253 for (src = contents, off = 0, drop = skip;
9254 src < contents + toc->size;
9257 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9262 memcpy (src - off, src, 8);
9266 toc->rawsize = toc->size;
9267 toc->size = src - contents - off;
9269 /* Adjust addends for relocs against the toc section sym,
9270 and optimize any accesses we can. */
9271 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9273 if (sec->reloc_count == 0
9274 || discarded_section (sec))
9277 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9279 if (relstart == NULL)
9282 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9284 enum elf_ppc64_reloc_type r_type;
9285 unsigned long r_symndx;
9287 struct elf_link_hash_entry *h;
9290 r_type = ELF64_R_TYPE (rel->r_info);
9297 case R_PPC64_TOC16_LO:
9298 case R_PPC64_TOC16_HI:
9299 case R_PPC64_TOC16_HA:
9300 case R_PPC64_TOC16_DS:
9301 case R_PPC64_TOC16_LO_DS:
9302 case R_PPC64_ADDR64:
9306 r_symndx = ELF64_R_SYM (rel->r_info);
9307 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9315 val = h->root.u.def.value;
9318 val = sym->st_value;
9320 local_toc_syms = TRUE;
9323 val += rel->r_addend;
9325 if (val > toc->rawsize)
9327 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9329 else if ((skip[val >> 3] & can_optimize) != 0)
9331 Elf_Internal_Rela *tocrel
9332 = toc_relocs + (skip[val >> 3] >> 2);
9333 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9337 case R_PPC64_TOC16_HA:
9338 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9341 case R_PPC64_TOC16_LO_DS:
9342 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9346 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9348 info->callbacks->einfo
9349 (_("%P: %H: %s references "
9350 "optimized away TOC entry\n"),
9351 ibfd, sec, rel->r_offset,
9352 ppc64_elf_howto_table[r_type]->name);
9353 bfd_set_error (bfd_error_bad_value);
9356 rel->r_addend = tocrel->r_addend;
9357 elf_section_data (sec)->relocs = relstart;
9361 if (h != NULL || sym->st_value != 0)
9364 rel->r_addend -= skip[val >> 3];
9365 elf_section_data (sec)->relocs = relstart;
9368 if (elf_section_data (sec)->relocs != relstart)
9372 /* We shouldn't have local or global symbols defined in the TOC,
9373 but handle them anyway. */
9374 if (local_syms != NULL)
9375 for (sym = local_syms;
9376 sym < local_syms + symtab_hdr->sh_info;
9378 if (sym->st_value != 0
9379 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9383 if (sym->st_value > toc->rawsize)
9384 i = toc->rawsize >> 3;
9386 i = sym->st_value >> 3;
9388 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9391 (*_bfd_error_handler)
9392 (_("%s defined on removed toc entry"),
9393 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9396 while ((skip[i] & (ref_from_discarded | can_optimize)));
9397 sym->st_value = (bfd_vma) i << 3;
9400 sym->st_value -= skip[i];
9401 symtab_hdr->contents = (unsigned char *) local_syms;
9404 /* Adjust any global syms defined in this toc input section. */
9405 if (toc_inf.global_toc_syms)
9408 toc_inf.skip = skip;
9409 toc_inf.global_toc_syms = FALSE;
9410 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9414 if (toc->reloc_count != 0)
9416 Elf_Internal_Shdr *rel_hdr;
9417 Elf_Internal_Rela *wrel;
9420 /* Remove unused toc relocs, and adjust those we keep. */
9421 if (toc_relocs == NULL)
9422 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9424 if (toc_relocs == NULL)
9428 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9429 if ((skip[rel->r_offset >> 3]
9430 & (ref_from_discarded | can_optimize)) == 0)
9432 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9433 wrel->r_info = rel->r_info;
9434 wrel->r_addend = rel->r_addend;
9437 else if (!dec_dynrel_count (rel->r_info, toc, info,
9438 &local_syms, NULL, NULL))
9441 elf_section_data (toc)->relocs = toc_relocs;
9442 toc->reloc_count = wrel - toc_relocs;
9443 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9444 sz = rel_hdr->sh_entsize;
9445 rel_hdr->sh_size = toc->reloc_count * sz;
9448 else if (toc_relocs != NULL
9449 && elf_section_data (toc)->relocs != toc_relocs)
9452 if (local_syms != NULL
9453 && symtab_hdr->contents != (unsigned char *) local_syms)
9455 if (!info->keep_memory)
9458 symtab_hdr->contents = (unsigned char *) local_syms;
9466 /* Return true iff input section I references the TOC using
9467 instructions limited to +/-32k offsets. */
9470 ppc64_elf_has_small_toc_reloc (asection *i)
9472 return (is_ppc64_elf (i->owner)
9473 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9476 /* Allocate space for one GOT entry. */
9479 allocate_got (struct elf_link_hash_entry *h,
9480 struct bfd_link_info *info,
9481 struct got_entry *gent)
9483 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9485 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9486 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9488 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9489 ? 2 : 1) * sizeof (Elf64_External_Rela);
9490 asection *got = ppc64_elf_tdata (gent->owner)->got;
9492 gent->got.offset = got->size;
9493 got->size += entsize;
9495 dyn = htab->elf.dynamic_sections_created;
9496 if (h->type == STT_GNU_IFUNC)
9498 htab->elf.irelplt->size += rentsize;
9499 htab->got_reli_size += rentsize;
9501 else if ((bfd_link_pic (info)
9502 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9503 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9504 || h->root.type != bfd_link_hash_undefweak))
9506 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9507 relgot->size += rentsize;
9511 /* This function merges got entries in the same toc group. */
9514 merge_got_entries (struct got_entry **pent)
9516 struct got_entry *ent, *ent2;
9518 for (ent = *pent; ent != NULL; ent = ent->next)
9519 if (!ent->is_indirect)
9520 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9521 if (!ent2->is_indirect
9522 && ent2->addend == ent->addend
9523 && ent2->tls_type == ent->tls_type
9524 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9526 ent2->is_indirect = TRUE;
9527 ent2->got.ent = ent;
9531 /* Allocate space in .plt, .got and associated reloc sections for
9535 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9537 struct bfd_link_info *info;
9538 struct ppc_link_hash_table *htab;
9540 struct ppc_link_hash_entry *eh;
9541 struct elf_dyn_relocs *p;
9542 struct got_entry **pgent, *gent;
9544 if (h->root.type == bfd_link_hash_indirect)
9547 info = (struct bfd_link_info *) inf;
9548 htab = ppc_hash_table (info);
9552 if ((htab->elf.dynamic_sections_created
9554 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
9555 || h->type == STT_GNU_IFUNC)
9557 struct plt_entry *pent;
9558 bfd_boolean doneone = FALSE;
9559 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9560 if (pent->plt.refcount > 0)
9562 if (!htab->elf.dynamic_sections_created
9563 || h->dynindx == -1)
9566 pent->plt.offset = s->size;
9567 s->size += PLT_ENTRY_SIZE (htab);
9568 s = htab->elf.irelplt;
9572 /* If this is the first .plt entry, make room for the special
9576 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9578 pent->plt.offset = s->size;
9580 /* Make room for this entry. */
9581 s->size += PLT_ENTRY_SIZE (htab);
9583 /* Make room for the .glink code. */
9586 s->size += GLINK_CALL_STUB_SIZE;
9589 /* We need bigger stubs past index 32767. */
9590 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9597 /* We also need to make an entry in the .rela.plt section. */
9598 s = htab->elf.srelplt;
9600 s->size += sizeof (Elf64_External_Rela);
9604 pent->plt.offset = (bfd_vma) -1;
9607 h->plt.plist = NULL;
9613 h->plt.plist = NULL;
9617 eh = (struct ppc_link_hash_entry *) h;
9618 /* Run through the TLS GD got entries first if we're changing them
9620 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9621 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9622 if (gent->got.refcount > 0
9623 && (gent->tls_type & TLS_GD) != 0)
9625 /* This was a GD entry that has been converted to TPREL. If
9626 there happens to be a TPREL entry we can use that one. */
9627 struct got_entry *ent;
9628 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9629 if (ent->got.refcount > 0
9630 && (ent->tls_type & TLS_TPREL) != 0
9631 && ent->addend == gent->addend
9632 && ent->owner == gent->owner)
9634 gent->got.refcount = 0;
9638 /* If not, then we'll be using our own TPREL entry. */
9639 if (gent->got.refcount != 0)
9640 gent->tls_type = TLS_TLS | TLS_TPREL;
9643 /* Remove any list entry that won't generate a word in the GOT before
9644 we call merge_got_entries. Otherwise we risk merging to empty
9646 pgent = &h->got.glist;
9647 while ((gent = *pgent) != NULL)
9648 if (gent->got.refcount > 0)
9650 if ((gent->tls_type & TLS_LD) != 0
9653 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9654 *pgent = gent->next;
9657 pgent = &gent->next;
9660 *pgent = gent->next;
9662 if (!htab->do_multi_toc)
9663 merge_got_entries (&h->got.glist);
9665 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9666 if (!gent->is_indirect)
9668 /* Make sure this symbol is output as a dynamic symbol.
9669 Undefined weak syms won't yet be marked as dynamic,
9670 nor will all TLS symbols. */
9671 if (h->dynindx == -1
9673 && h->type != STT_GNU_IFUNC
9674 && htab->elf.dynamic_sections_created)
9676 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9680 if (!is_ppc64_elf (gent->owner))
9683 allocate_got (h, info, gent);
9686 if (eh->dyn_relocs == NULL
9687 || (!htab->elf.dynamic_sections_created
9688 && h->type != STT_GNU_IFUNC))
9691 /* In the shared -Bsymbolic case, discard space allocated for
9692 dynamic pc-relative relocs against symbols which turn out to be
9693 defined in regular objects. For the normal shared case, discard
9694 space for relocs that have become local due to symbol visibility
9697 if (bfd_link_pic (info))
9699 /* Relocs that use pc_count are those that appear on a call insn,
9700 or certain REL relocs (see must_be_dyn_reloc) that can be
9701 generated via assembly. We want calls to protected symbols to
9702 resolve directly to the function rather than going via the plt.
9703 If people want function pointer comparisons to work as expected
9704 then they should avoid writing weird assembly. */
9705 if (SYMBOL_CALLS_LOCAL (info, h))
9707 struct elf_dyn_relocs **pp;
9709 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9711 p->count -= p->pc_count;
9720 /* Also discard relocs on undefined weak syms with non-default
9722 if (eh->dyn_relocs != NULL
9723 && h->root.type == bfd_link_hash_undefweak)
9725 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9726 eh->dyn_relocs = NULL;
9728 /* Make sure this symbol is output as a dynamic symbol.
9729 Undefined weak syms won't yet be marked as dynamic. */
9730 else if (h->dynindx == -1
9731 && !h->forced_local)
9733 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9738 else if (h->type == STT_GNU_IFUNC)
9740 if (!h->non_got_ref)
9741 eh->dyn_relocs = NULL;
9743 else if (ELIMINATE_COPY_RELOCS)
9745 /* For the non-shared case, discard space for relocs against
9746 symbols which turn out to need copy relocs or are not
9752 /* Make sure this symbol is output as a dynamic symbol.
9753 Undefined weak syms won't yet be marked as dynamic. */
9754 if (h->dynindx == -1
9755 && !h->forced_local)
9757 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9761 /* If that succeeded, we know we'll be keeping all the
9763 if (h->dynindx != -1)
9767 eh->dyn_relocs = NULL;
9772 /* Finally, allocate space. */
9773 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9775 asection *sreloc = elf_section_data (p->sec)->sreloc;
9776 if (eh->elf.type == STT_GNU_IFUNC)
9777 sreloc = htab->elf.irelplt;
9778 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9784 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9785 to set up space for global entry stubs. These are put in glink,
9786 after the branch table. */
9789 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9791 struct bfd_link_info *info;
9792 struct ppc_link_hash_table *htab;
9793 struct plt_entry *pent;
9796 if (h->root.type == bfd_link_hash_indirect)
9799 if (!h->pointer_equality_needed)
9806 htab = ppc_hash_table (info);
9811 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9812 if (pent->plt.offset != (bfd_vma) -1
9813 && pent->addend == 0)
9815 /* For ELFv2, if this symbol is not defined in a regular file
9816 and we are not generating a shared library or pie, then we
9817 need to define the symbol in the executable on a call stub.
9818 This is to avoid text relocations. */
9819 s->size = (s->size + 15) & -16;
9820 h->root.u.def.section = s;
9821 h->root.u.def.value = s->size;
9828 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9829 read-only sections. */
9832 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9834 if (h->root.type == bfd_link_hash_indirect)
9837 if (readonly_dynrelocs (h))
9839 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9841 /* Not an error, just cut short the traversal. */
9847 /* Set the sizes of the dynamic sections. */
9850 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9851 struct bfd_link_info *info)
9853 struct ppc_link_hash_table *htab;
9858 struct got_entry *first_tlsld;
9860 htab = ppc_hash_table (info);
9864 dynobj = htab->elf.dynobj;
9868 if (htab->elf.dynamic_sections_created)
9870 /* Set the contents of the .interp section to the interpreter. */
9871 if (bfd_link_executable (info) && !info->nointerp)
9873 s = bfd_get_linker_section (dynobj, ".interp");
9876 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9877 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9881 /* Set up .got offsets for local syms, and space for local dynamic
9883 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9885 struct got_entry **lgot_ents;
9886 struct got_entry **end_lgot_ents;
9887 struct plt_entry **local_plt;
9888 struct plt_entry **end_local_plt;
9889 unsigned char *lgot_masks;
9890 bfd_size_type locsymcount;
9891 Elf_Internal_Shdr *symtab_hdr;
9893 if (!is_ppc64_elf (ibfd))
9896 for (s = ibfd->sections; s != NULL; s = s->next)
9898 struct ppc_dyn_relocs *p;
9900 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9902 if (!bfd_is_abs_section (p->sec)
9903 && bfd_is_abs_section (p->sec->output_section))
9905 /* Input section has been discarded, either because
9906 it is a copy of a linkonce section or due to
9907 linker script /DISCARD/, so we'll be discarding
9910 else if (p->count != 0)
9912 asection *srel = elf_section_data (p->sec)->sreloc;
9914 srel = htab->elf.irelplt;
9915 srel->size += p->count * sizeof (Elf64_External_Rela);
9916 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9917 info->flags |= DF_TEXTREL;
9922 lgot_ents = elf_local_got_ents (ibfd);
9926 symtab_hdr = &elf_symtab_hdr (ibfd);
9927 locsymcount = symtab_hdr->sh_info;
9928 end_lgot_ents = lgot_ents + locsymcount;
9929 local_plt = (struct plt_entry **) end_lgot_ents;
9930 end_local_plt = local_plt + locsymcount;
9931 lgot_masks = (unsigned char *) end_local_plt;
9932 s = ppc64_elf_tdata (ibfd)->got;
9933 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9935 struct got_entry **pent, *ent;
9938 while ((ent = *pent) != NULL)
9939 if (ent->got.refcount > 0)
9941 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9943 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9948 unsigned int ent_size = 8;
9949 unsigned int rel_size = sizeof (Elf64_External_Rela);
9951 ent->got.offset = s->size;
9952 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9957 s->size += ent_size;
9958 if ((*lgot_masks & PLT_IFUNC) != 0)
9960 htab->elf.irelplt->size += rel_size;
9961 htab->got_reli_size += rel_size;
9963 else if (bfd_link_pic (info))
9965 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9966 srel->size += rel_size;
9975 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9976 for (; local_plt < end_local_plt; ++local_plt)
9978 struct plt_entry *ent;
9980 for (ent = *local_plt; ent != NULL; ent = ent->next)
9981 if (ent->plt.refcount > 0)
9984 ent->plt.offset = s->size;
9985 s->size += PLT_ENTRY_SIZE (htab);
9987 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9990 ent->plt.offset = (bfd_vma) -1;
9994 /* Allocate global sym .plt and .got entries, and space for global
9995 sym dynamic relocs. */
9996 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9997 /* Stash the end of glink branch table. */
9998 if (htab->glink != NULL)
9999 htab->glink->rawsize = htab->glink->size;
10001 if (!htab->opd_abi && !bfd_link_pic (info))
10002 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10004 first_tlsld = NULL;
10005 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10007 struct got_entry *ent;
10009 if (!is_ppc64_elf (ibfd))
10012 ent = ppc64_tlsld_got (ibfd);
10013 if (ent->got.refcount > 0)
10015 if (!htab->do_multi_toc && first_tlsld != NULL)
10017 ent->is_indirect = TRUE;
10018 ent->got.ent = first_tlsld;
10022 if (first_tlsld == NULL)
10024 s = ppc64_elf_tdata (ibfd)->got;
10025 ent->got.offset = s->size;
10028 if (bfd_link_pic (info))
10030 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10031 srel->size += sizeof (Elf64_External_Rela);
10036 ent->got.offset = (bfd_vma) -1;
10039 /* We now have determined the sizes of the various dynamic sections.
10040 Allocate memory for them. */
10042 for (s = dynobj->sections; s != NULL; s = s->next)
10044 if ((s->flags & SEC_LINKER_CREATED) == 0)
10047 if (s == htab->brlt || s == htab->relbrlt)
10048 /* These haven't been allocated yet; don't strip. */
10050 else if (s == htab->elf.sgot
10051 || s == htab->elf.splt
10052 || s == htab->elf.iplt
10053 || s == htab->glink
10054 || s == htab->dynbss)
10056 /* Strip this section if we don't need it; see the
10059 else if (s == htab->glink_eh_frame)
10061 if (!bfd_is_abs_section (s->output_section))
10062 /* Not sized yet. */
10065 else if (CONST_STRNEQ (s->name, ".rela"))
10069 if (s != htab->elf.srelplt)
10072 /* We use the reloc_count field as a counter if we need
10073 to copy relocs into the output file. */
10074 s->reloc_count = 0;
10079 /* It's not one of our sections, so don't allocate space. */
10085 /* If we don't need this section, strip it from the
10086 output file. This is mostly to handle .rela.bss and
10087 .rela.plt. We must create both sections in
10088 create_dynamic_sections, because they must be created
10089 before the linker maps input sections to output
10090 sections. The linker does that before
10091 adjust_dynamic_symbol is called, and it is that
10092 function which decides whether anything needs to go
10093 into these sections. */
10094 s->flags |= SEC_EXCLUDE;
10098 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10101 /* Allocate memory for the section contents. We use bfd_zalloc
10102 here in case unused entries are not reclaimed before the
10103 section's contents are written out. This should not happen,
10104 but this way if it does we get a R_PPC64_NONE reloc in .rela
10105 sections instead of garbage.
10106 We also rely on the section contents being zero when writing
10108 s->contents = bfd_zalloc (dynobj, s->size);
10109 if (s->contents == NULL)
10113 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10115 if (!is_ppc64_elf (ibfd))
10118 s = ppc64_elf_tdata (ibfd)->got;
10119 if (s != NULL && s != htab->elf.sgot)
10122 s->flags |= SEC_EXCLUDE;
10125 s->contents = bfd_zalloc (ibfd, s->size);
10126 if (s->contents == NULL)
10130 s = ppc64_elf_tdata (ibfd)->relgot;
10134 s->flags |= SEC_EXCLUDE;
10137 s->contents = bfd_zalloc (ibfd, s->size);
10138 if (s->contents == NULL)
10141 s->reloc_count = 0;
10146 if (htab->elf.dynamic_sections_created)
10148 bfd_boolean tls_opt;
10150 /* Add some entries to the .dynamic section. We fill in the
10151 values later, in ppc64_elf_finish_dynamic_sections, but we
10152 must add the entries now so that we get the correct size for
10153 the .dynamic section. The DT_DEBUG entry is filled in by the
10154 dynamic linker and used by the debugger. */
10155 #define add_dynamic_entry(TAG, VAL) \
10156 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10158 if (bfd_link_executable (info))
10160 if (!add_dynamic_entry (DT_DEBUG, 0))
10164 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10166 if (!add_dynamic_entry (DT_PLTGOT, 0)
10167 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10168 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10169 || !add_dynamic_entry (DT_JMPREL, 0)
10170 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10174 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10176 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10177 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10181 tls_opt = (htab->params->tls_get_addr_opt
10182 && htab->tls_get_addr_fd != NULL
10183 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10184 if (tls_opt || !htab->opd_abi)
10186 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10192 if (!add_dynamic_entry (DT_RELA, 0)
10193 || !add_dynamic_entry (DT_RELASZ, 0)
10194 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10197 /* If any dynamic relocs apply to a read-only section,
10198 then we need a DT_TEXTREL entry. */
10199 if ((info->flags & DF_TEXTREL) == 0)
10200 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10202 if ((info->flags & DF_TEXTREL) != 0)
10204 if (!add_dynamic_entry (DT_TEXTREL, 0))
10209 #undef add_dynamic_entry
10214 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10217 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10219 if (h->plt.plist != NULL
10221 && !h->pointer_equality_needed)
10224 return _bfd_elf_hash_symbol (h);
10227 /* Determine the type of stub needed, if any, for a call. */
10229 static inline enum ppc_stub_type
10230 ppc_type_of_stub (asection *input_sec,
10231 const Elf_Internal_Rela *rel,
10232 struct ppc_link_hash_entry **hash,
10233 struct plt_entry **plt_ent,
10234 bfd_vma destination,
10235 unsigned long local_off)
10237 struct ppc_link_hash_entry *h = *hash;
10239 bfd_vma branch_offset;
10240 bfd_vma max_branch_offset;
10241 enum elf_ppc64_reloc_type r_type;
10245 struct plt_entry *ent;
10246 struct ppc_link_hash_entry *fdh = h;
10248 && h->oh->is_func_descriptor)
10250 fdh = ppc_follow_link (h->oh);
10254 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10255 if (ent->addend == rel->r_addend
10256 && ent->plt.offset != (bfd_vma) -1)
10259 return ppc_stub_plt_call;
10262 /* Here, we know we don't have a plt entry. If we don't have a
10263 either a defined function descriptor or a defined entry symbol
10264 in a regular object file, then it is pointless trying to make
10265 any other type of stub. */
10266 if (!is_static_defined (&fdh->elf)
10267 && !is_static_defined (&h->elf))
10268 return ppc_stub_none;
10270 else if (elf_local_got_ents (input_sec->owner) != NULL)
10272 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10273 struct plt_entry **local_plt = (struct plt_entry **)
10274 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10275 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10277 if (local_plt[r_symndx] != NULL)
10279 struct plt_entry *ent;
10281 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10282 if (ent->addend == rel->r_addend
10283 && ent->plt.offset != (bfd_vma) -1)
10286 return ppc_stub_plt_call;
10291 /* Determine where the call point is. */
10292 location = (input_sec->output_offset
10293 + input_sec->output_section->vma
10296 branch_offset = destination - location;
10297 r_type = ELF64_R_TYPE (rel->r_info);
10299 /* Determine if a long branch stub is needed. */
10300 max_branch_offset = 1 << 25;
10301 if (r_type != R_PPC64_REL24)
10302 max_branch_offset = 1 << 15;
10304 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10305 /* We need a stub. Figure out whether a long_branch or plt_branch
10306 is needed later. */
10307 return ppc_stub_long_branch;
10309 return ppc_stub_none;
10312 /* With power7 weakly ordered memory model, it is possible for ld.so
10313 to update a plt entry in one thread and have another thread see a
10314 stale zero toc entry. To avoid this we need some sort of acquire
10315 barrier in the call stub. One solution is to make the load of the
10316 toc word seem to appear to depend on the load of the function entry
10317 word. Another solution is to test for r2 being zero, and branch to
10318 the appropriate glink entry if so.
10320 . fake dep barrier compare
10321 . ld 12,xxx(2) ld 12,xxx(2)
10322 . mtctr 12 mtctr 12
10323 . xor 11,12,12 ld 2,xxx+8(2)
10324 . add 2,2,11 cmpldi 2,0
10325 . ld 2,xxx+8(2) bnectr+
10326 . bctr b <glink_entry>
10328 The solution involving the compare turns out to be faster, so
10329 that's what we use unless the branch won't reach. */
10331 #define ALWAYS_USE_FAKE_DEP 0
10332 #define ALWAYS_EMIT_R2SAVE 0
10334 #define PPC_LO(v) ((v) & 0xffff)
10335 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10336 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10338 static inline unsigned int
10339 plt_stub_size (struct ppc_link_hash_table *htab,
10340 struct ppc_stub_hash_entry *stub_entry,
10343 unsigned size = 12;
10345 if (ALWAYS_EMIT_R2SAVE
10346 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10348 if (PPC_HA (off) != 0)
10353 if (htab->params->plt_static_chain)
10355 if (htab->params->plt_thread_safe
10356 && htab->elf.dynamic_sections_created
10357 && stub_entry->h != NULL
10358 && stub_entry->h->elf.dynindx != -1)
10360 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10363 if (stub_entry->h != NULL
10364 && (stub_entry->h == htab->tls_get_addr_fd
10365 || stub_entry->h == htab->tls_get_addr)
10366 && htab->params->tls_get_addr_opt)
10371 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10372 then return the padding needed to do so. */
10373 static inline unsigned int
10374 plt_stub_pad (struct ppc_link_hash_table *htab,
10375 struct ppc_stub_hash_entry *stub_entry,
10378 int stub_align = 1 << htab->params->plt_stub_align;
10379 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10380 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10382 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10383 > ((stub_size - 1) & -stub_align))
10384 return stub_align - (stub_off & (stub_align - 1));
10388 /* Build a .plt call stub. */
10390 static inline bfd_byte *
10391 build_plt_stub (struct ppc_link_hash_table *htab,
10392 struct ppc_stub_hash_entry *stub_entry,
10393 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10395 bfd *obfd = htab->params->stub_bfd;
10396 bfd_boolean plt_load_toc = htab->opd_abi;
10397 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10398 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10399 && htab->elf.dynamic_sections_created
10400 && stub_entry->h != NULL
10401 && stub_entry->h->elf.dynindx != -1);
10402 bfd_boolean use_fake_dep = plt_thread_safe;
10403 bfd_vma cmp_branch_off = 0;
10405 if (!ALWAYS_USE_FAKE_DEP
10408 && !((stub_entry->h == htab->tls_get_addr_fd
10409 || stub_entry->h == htab->tls_get_addr)
10410 && htab->params->tls_get_addr_opt))
10412 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10413 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10414 / PLT_ENTRY_SIZE (htab));
10415 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10418 if (pltindex > 32768)
10419 glinkoff += (pltindex - 32768) * 4;
10421 + htab->glink->output_offset
10422 + htab->glink->output_section->vma);
10423 from = (p - stub_entry->group->stub_sec->contents
10424 + 4 * (ALWAYS_EMIT_R2SAVE
10425 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10426 + 4 * (PPC_HA (offset) != 0)
10427 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10428 != PPC_HA (offset))
10429 + 4 * (plt_static_chain != 0)
10431 + stub_entry->group->stub_sec->output_offset
10432 + stub_entry->group->stub_sec->output_section->vma);
10433 cmp_branch_off = to - from;
10434 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10437 if (PPC_HA (offset) != 0)
10441 if (ALWAYS_EMIT_R2SAVE
10442 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10443 r[0].r_offset += 4;
10444 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10445 r[1].r_offset = r[0].r_offset + 4;
10446 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10447 r[1].r_addend = r[0].r_addend;
10450 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10452 r[2].r_offset = r[1].r_offset + 4;
10453 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10454 r[2].r_addend = r[0].r_addend;
10458 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10459 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10460 r[2].r_addend = r[0].r_addend + 8;
10461 if (plt_static_chain)
10463 r[3].r_offset = r[2].r_offset + 4;
10464 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10465 r[3].r_addend = r[0].r_addend + 16;
10470 if (ALWAYS_EMIT_R2SAVE
10471 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10472 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10475 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10476 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10480 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10481 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10484 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10486 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10489 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10494 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10495 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10497 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10498 if (plt_static_chain)
10499 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10506 if (ALWAYS_EMIT_R2SAVE
10507 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10508 r[0].r_offset += 4;
10509 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10512 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10514 r[1].r_offset = r[0].r_offset + 4;
10515 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10516 r[1].r_addend = r[0].r_addend;
10520 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10521 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10522 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10523 if (plt_static_chain)
10525 r[2].r_offset = r[1].r_offset + 4;
10526 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10527 r[2].r_addend = r[0].r_addend + 8;
10532 if (ALWAYS_EMIT_R2SAVE
10533 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10534 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10535 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10537 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10539 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10542 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10547 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10548 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10550 if (plt_static_chain)
10551 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10552 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10555 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10557 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10558 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10559 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10562 bfd_put_32 (obfd, BCTR, p), p += 4;
10566 /* Build a special .plt call stub for __tls_get_addr. */
10568 #define LD_R11_0R3 0xe9630000
10569 #define LD_R12_0R3 0xe9830000
10570 #define MR_R0_R3 0x7c601b78
10571 #define CMPDI_R11_0 0x2c2b0000
10572 #define ADD_R3_R12_R13 0x7c6c6a14
10573 #define BEQLR 0x4d820020
10574 #define MR_R3_R0 0x7c030378
10575 #define STD_R11_0R1 0xf9610000
10576 #define BCTRL 0x4e800421
10577 #define LD_R11_0R1 0xe9610000
10578 #define MTLR_R11 0x7d6803a6
10580 static inline bfd_byte *
10581 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10582 struct ppc_stub_hash_entry *stub_entry,
10583 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10585 bfd *obfd = htab->params->stub_bfd;
10587 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10588 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10589 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10590 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10591 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10592 bfd_put_32 (obfd, BEQLR, p), p += 4;
10593 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10594 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10595 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10598 r[0].r_offset += 9 * 4;
10599 p = build_plt_stub (htab, stub_entry, p, offset, r);
10600 bfd_put_32 (obfd, BCTRL, p - 4);
10602 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10603 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10604 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10605 bfd_put_32 (obfd, BLR, p), p += 4;
10610 static Elf_Internal_Rela *
10611 get_relocs (asection *sec, int count)
10613 Elf_Internal_Rela *relocs;
10614 struct bfd_elf_section_data *elfsec_data;
10616 elfsec_data = elf_section_data (sec);
10617 relocs = elfsec_data->relocs;
10618 if (relocs == NULL)
10620 bfd_size_type relsize;
10621 relsize = sec->reloc_count * sizeof (*relocs);
10622 relocs = bfd_alloc (sec->owner, relsize);
10623 if (relocs == NULL)
10625 elfsec_data->relocs = relocs;
10626 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10627 sizeof (Elf_Internal_Shdr));
10628 if (elfsec_data->rela.hdr == NULL)
10630 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10631 * sizeof (Elf64_External_Rela));
10632 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10633 sec->reloc_count = 0;
10635 relocs += sec->reloc_count;
10636 sec->reloc_count += count;
10641 get_r2off (struct bfd_link_info *info,
10642 struct ppc_stub_hash_entry *stub_entry)
10644 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10645 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10649 /* Support linking -R objects. Get the toc pointer from the
10652 if (!htab->opd_abi)
10654 asection *opd = stub_entry->h->elf.root.u.def.section;
10655 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10657 if (strcmp (opd->name, ".opd") != 0
10658 || opd->reloc_count != 0)
10660 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10661 stub_entry->h->elf.root.root.string);
10662 bfd_set_error (bfd_error_bad_value);
10663 return (bfd_vma) -1;
10665 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10666 return (bfd_vma) -1;
10667 r2off = bfd_get_64 (opd->owner, buf);
10668 r2off -= elf_gp (info->output_bfd);
10670 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10675 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10677 struct ppc_stub_hash_entry *stub_entry;
10678 struct ppc_branch_hash_entry *br_entry;
10679 struct bfd_link_info *info;
10680 struct ppc_link_hash_table *htab;
10685 Elf_Internal_Rela *r;
10688 /* Massage our args to the form they really have. */
10689 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10692 htab = ppc_hash_table (info);
10696 /* Make a note of the offset within the stubs for this entry. */
10697 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10698 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10700 htab->stub_count[stub_entry->stub_type - 1] += 1;
10701 switch (stub_entry->stub_type)
10703 case ppc_stub_long_branch:
10704 case ppc_stub_long_branch_r2off:
10705 /* Branches are relative. This is where we are going to. */
10706 dest = (stub_entry->target_value
10707 + stub_entry->target_section->output_offset
10708 + stub_entry->target_section->output_section->vma);
10709 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10712 /* And this is where we are coming from. */
10713 off -= (stub_entry->stub_offset
10714 + stub_entry->group->stub_sec->output_offset
10715 + stub_entry->group->stub_sec->output_section->vma);
10718 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10720 bfd_vma r2off = get_r2off (info, stub_entry);
10722 if (r2off == (bfd_vma) -1)
10724 htab->stub_error = TRUE;
10727 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10730 if (PPC_HA (r2off) != 0)
10732 bfd_put_32 (htab->params->stub_bfd,
10733 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10737 if (PPC_LO (r2off) != 0)
10739 bfd_put_32 (htab->params->stub_bfd,
10740 ADDI_R2_R2 | PPC_LO (r2off), loc);
10746 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10748 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10750 info->callbacks->einfo
10751 (_("%P: long branch stub `%s' offset overflow\n"),
10752 stub_entry->root.string);
10753 htab->stub_error = TRUE;
10757 if (info->emitrelocations)
10759 r = get_relocs (stub_entry->group->stub_sec, 1);
10762 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10763 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10764 r->r_addend = dest;
10765 if (stub_entry->h != NULL)
10767 struct elf_link_hash_entry **hashes;
10768 unsigned long symndx;
10769 struct ppc_link_hash_entry *h;
10771 hashes = elf_sym_hashes (htab->params->stub_bfd);
10772 if (hashes == NULL)
10774 bfd_size_type hsize;
10776 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10777 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10778 if (hashes == NULL)
10780 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10781 htab->stub_globals = 1;
10783 symndx = htab->stub_globals++;
10785 hashes[symndx] = &h->elf;
10786 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10787 if (h->oh != NULL && h->oh->is_func)
10788 h = ppc_follow_link (h->oh);
10789 if (h->elf.root.u.def.section != stub_entry->target_section)
10790 /* H is an opd symbol. The addend must be zero. */
10794 off = (h->elf.root.u.def.value
10795 + h->elf.root.u.def.section->output_offset
10796 + h->elf.root.u.def.section->output_section->vma);
10797 r->r_addend -= off;
10803 case ppc_stub_plt_branch:
10804 case ppc_stub_plt_branch_r2off:
10805 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10806 stub_entry->root.string + 9,
10808 if (br_entry == NULL)
10810 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10811 stub_entry->root.string);
10812 htab->stub_error = TRUE;
10816 dest = (stub_entry->target_value
10817 + stub_entry->target_section->output_offset
10818 + stub_entry->target_section->output_section->vma);
10819 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10820 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10822 bfd_put_64 (htab->brlt->owner, dest,
10823 htab->brlt->contents + br_entry->offset);
10825 if (br_entry->iter == htab->stub_iteration)
10827 br_entry->iter = 0;
10829 if (htab->relbrlt != NULL)
10831 /* Create a reloc for the branch lookup table entry. */
10832 Elf_Internal_Rela rela;
10835 rela.r_offset = (br_entry->offset
10836 + htab->brlt->output_offset
10837 + htab->brlt->output_section->vma);
10838 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10839 rela.r_addend = dest;
10841 rl = htab->relbrlt->contents;
10842 rl += (htab->relbrlt->reloc_count++
10843 * sizeof (Elf64_External_Rela));
10844 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10846 else if (info->emitrelocations)
10848 r = get_relocs (htab->brlt, 1);
10851 /* brlt, being SEC_LINKER_CREATED does not go through the
10852 normal reloc processing. Symbols and offsets are not
10853 translated from input file to output file form, so
10854 set up the offset per the output file. */
10855 r->r_offset = (br_entry->offset
10856 + htab->brlt->output_offset
10857 + htab->brlt->output_section->vma);
10858 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10859 r->r_addend = dest;
10863 dest = (br_entry->offset
10864 + htab->brlt->output_offset
10865 + htab->brlt->output_section->vma);
10868 - elf_gp (htab->brlt->output_section->owner)
10869 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
10871 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10873 info->callbacks->einfo
10874 (_("%P: linkage table error against `%T'\n"),
10875 stub_entry->root.string);
10876 bfd_set_error (bfd_error_bad_value);
10877 htab->stub_error = TRUE;
10881 if (info->emitrelocations)
10883 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
10886 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
10887 if (bfd_big_endian (info->output_bfd))
10888 r[0].r_offset += 2;
10889 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10890 r[0].r_offset += 4;
10891 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10892 r[0].r_addend = dest;
10893 if (PPC_HA (off) != 0)
10895 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10896 r[1].r_offset = r[0].r_offset + 4;
10897 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10898 r[1].r_addend = r[0].r_addend;
10902 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10904 if (PPC_HA (off) != 0)
10907 bfd_put_32 (htab->params->stub_bfd,
10908 ADDIS_R12_R2 | PPC_HA (off), loc);
10910 bfd_put_32 (htab->params->stub_bfd,
10911 LD_R12_0R12 | PPC_LO (off), loc);
10916 bfd_put_32 (htab->params->stub_bfd,
10917 LD_R12_0R2 | PPC_LO (off), loc);
10922 bfd_vma r2off = get_r2off (info, stub_entry);
10924 if (r2off == (bfd_vma) -1)
10926 htab->stub_error = TRUE;
10930 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10933 if (PPC_HA (off) != 0)
10936 bfd_put_32 (htab->params->stub_bfd,
10937 ADDIS_R12_R2 | PPC_HA (off), loc);
10939 bfd_put_32 (htab->params->stub_bfd,
10940 LD_R12_0R12 | PPC_LO (off), loc);
10943 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10945 if (PPC_HA (r2off) != 0)
10949 bfd_put_32 (htab->params->stub_bfd,
10950 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10952 if (PPC_LO (r2off) != 0)
10956 bfd_put_32 (htab->params->stub_bfd,
10957 ADDI_R2_R2 | PPC_LO (r2off), loc);
10961 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10963 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10966 case ppc_stub_plt_call:
10967 case ppc_stub_plt_call_r2save:
10968 if (stub_entry->h != NULL
10969 && stub_entry->h->is_func_descriptor
10970 && stub_entry->h->oh != NULL)
10972 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10974 /* If the old-ABI "dot-symbol" is undefined make it weak so
10975 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
10976 if (fh->elf.root.type == bfd_link_hash_undefined)
10977 fh->elf.root.type = bfd_link_hash_undefweak;
10978 /* Stop undo_symbol_twiddle changing it back to undefined. */
10979 fh->was_undefined = 0;
10982 /* Now build the stub. */
10983 dest = stub_entry->plt_ent->plt.offset & ~1;
10984 if (dest >= (bfd_vma) -2)
10987 plt = htab->elf.splt;
10988 if (!htab->elf.dynamic_sections_created
10989 || stub_entry->h == NULL
10990 || stub_entry->h->elf.dynindx == -1)
10991 plt = htab->elf.iplt;
10993 dest += plt->output_offset + plt->output_section->vma;
10995 if (stub_entry->h == NULL
10996 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10998 Elf_Internal_Rela rela;
11001 rela.r_offset = dest;
11003 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11005 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11006 rela.r_addend = (stub_entry->target_value
11007 + stub_entry->target_section->output_offset
11008 + stub_entry->target_section->output_section->vma);
11010 rl = (htab->elf.irelplt->contents
11011 + (htab->elf.irelplt->reloc_count++
11012 * sizeof (Elf64_External_Rela)));
11013 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11014 stub_entry->plt_ent->plt.offset |= 1;
11018 - elf_gp (plt->output_section->owner)
11019 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11021 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11023 info->callbacks->einfo
11024 (_("%P: linkage table error against `%T'\n"),
11025 stub_entry->h != NULL
11026 ? stub_entry->h->elf.root.root.string
11028 bfd_set_error (bfd_error_bad_value);
11029 htab->stub_error = TRUE;
11033 if (htab->params->plt_stub_align != 0)
11035 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11037 stub_entry->group->stub_sec->size += pad;
11038 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11043 if (info->emitrelocations)
11045 r = get_relocs (stub_entry->group->stub_sec,
11046 ((PPC_HA (off) != 0)
11048 ? 2 + (htab->params->plt_static_chain
11049 && PPC_HA (off + 16) == PPC_HA (off))
11053 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11054 if (bfd_big_endian (info->output_bfd))
11055 r[0].r_offset += 2;
11056 r[0].r_addend = dest;
11058 if (stub_entry->h != NULL
11059 && (stub_entry->h == htab->tls_get_addr_fd
11060 || stub_entry->h == htab->tls_get_addr)
11061 && htab->params->tls_get_addr_opt)
11062 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11064 p = build_plt_stub (htab, stub_entry, loc, off, r);
11068 case ppc_stub_save_res:
11076 stub_entry->group->stub_sec->size += size;
11078 if (htab->params->emit_stub_syms)
11080 struct elf_link_hash_entry *h;
11083 const char *const stub_str[] = { "long_branch",
11084 "long_branch_r2off",
11086 "plt_branch_r2off",
11090 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11091 len2 = strlen (stub_entry->root.string);
11092 name = bfd_malloc (len1 + len2 + 2);
11095 memcpy (name, stub_entry->root.string, 9);
11096 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11097 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11098 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11101 if (h->root.type == bfd_link_hash_new)
11103 h->root.type = bfd_link_hash_defined;
11104 h->root.u.def.section = stub_entry->group->stub_sec;
11105 h->root.u.def.value = stub_entry->stub_offset;
11106 h->ref_regular = 1;
11107 h->def_regular = 1;
11108 h->ref_regular_nonweak = 1;
11109 h->forced_local = 1;
11111 h->root.linker_def = 1;
11118 /* As above, but don't actually build the stub. Just bump offset so
11119 we know stub section sizes, and select plt_branch stubs where
11120 long_branch stubs won't do. */
11123 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11125 struct ppc_stub_hash_entry *stub_entry;
11126 struct bfd_link_info *info;
11127 struct ppc_link_hash_table *htab;
11131 /* Massage our args to the form they really have. */
11132 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11135 htab = ppc_hash_table (info);
11139 if (stub_entry->h != NULL
11140 && stub_entry->h->save_res
11141 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11142 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11144 /* Don't make stubs to out-of-line register save/restore
11145 functions. Instead, emit copies of the functions. */
11146 stub_entry->group->needs_save_res = 1;
11147 stub_entry->stub_type = ppc_stub_save_res;
11151 if (stub_entry->stub_type == ppc_stub_plt_call
11152 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11155 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11156 if (off >= (bfd_vma) -2)
11158 plt = htab->elf.splt;
11159 if (!htab->elf.dynamic_sections_created
11160 || stub_entry->h == NULL
11161 || stub_entry->h->elf.dynindx == -1)
11162 plt = htab->elf.iplt;
11163 off += (plt->output_offset
11164 + plt->output_section->vma
11165 - elf_gp (plt->output_section->owner)
11166 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11168 size = plt_stub_size (htab, stub_entry, off);
11169 if (htab->params->plt_stub_align)
11170 size += plt_stub_pad (htab, stub_entry, off);
11171 if (info->emitrelocations)
11173 stub_entry->group->stub_sec->reloc_count
11174 += ((PPC_HA (off) != 0)
11176 ? 2 + (htab->params->plt_static_chain
11177 && PPC_HA (off + 16) == PPC_HA (off))
11179 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11184 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11187 bfd_vma local_off = 0;
11189 off = (stub_entry->target_value
11190 + stub_entry->target_section->output_offset
11191 + stub_entry->target_section->output_section->vma);
11192 off -= (stub_entry->group->stub_sec->size
11193 + stub_entry->group->stub_sec->output_offset
11194 + stub_entry->group->stub_sec->output_section->vma);
11196 /* Reset the stub type from the plt variant in case we now
11197 can reach with a shorter stub. */
11198 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11199 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11202 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11204 r2off = get_r2off (info, stub_entry);
11205 if (r2off == (bfd_vma) -1)
11207 htab->stub_error = TRUE;
11211 if (PPC_HA (r2off) != 0)
11213 if (PPC_LO (r2off) != 0)
11218 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11220 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11221 Do the same for -R objects without function descriptors. */
11222 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11223 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11225 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11227 struct ppc_branch_hash_entry *br_entry;
11229 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11230 stub_entry->root.string + 9,
11232 if (br_entry == NULL)
11234 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11235 stub_entry->root.string);
11236 htab->stub_error = TRUE;
11240 if (br_entry->iter != htab->stub_iteration)
11242 br_entry->iter = htab->stub_iteration;
11243 br_entry->offset = htab->brlt->size;
11244 htab->brlt->size += 8;
11246 if (htab->relbrlt != NULL)
11247 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11248 else if (info->emitrelocations)
11250 htab->brlt->reloc_count += 1;
11251 htab->brlt->flags |= SEC_RELOC;
11255 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11256 off = (br_entry->offset
11257 + htab->brlt->output_offset
11258 + htab->brlt->output_section->vma
11259 - elf_gp (htab->brlt->output_section->owner)
11260 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11262 if (info->emitrelocations)
11264 stub_entry->group->stub_sec->reloc_count
11265 += 1 + (PPC_HA (off) != 0);
11266 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11269 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11272 if (PPC_HA (off) != 0)
11278 if (PPC_HA (off) != 0)
11281 if (PPC_HA (r2off) != 0)
11283 if (PPC_LO (r2off) != 0)
11287 else if (info->emitrelocations)
11289 stub_entry->group->stub_sec->reloc_count += 1;
11290 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11294 stub_entry->group->stub_sec->size += size;
11298 /* Set up various things so that we can make a list of input sections
11299 for each output section included in the link. Returns -1 on error,
11300 0 when no stubs will be needed, and 1 on success. */
11303 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11307 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11312 htab->sec_info_arr_size = bfd_get_next_section_id ();
11313 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11314 htab->sec_info = bfd_zmalloc (amt);
11315 if (htab->sec_info == NULL)
11318 /* Set toc_off for com, und, abs and ind sections. */
11319 for (id = 0; id < 3; id++)
11320 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11325 /* Set up for first pass at multitoc partitioning. */
11328 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11330 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11332 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11333 htab->toc_bfd = NULL;
11334 htab->toc_first_sec = NULL;
11337 /* The linker repeatedly calls this function for each TOC input section
11338 and linker generated GOT section. Group input bfds such that the toc
11339 within a group is less than 64k in size. */
11342 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11344 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11345 bfd_vma addr, off, limit;
11350 if (!htab->second_toc_pass)
11352 /* Keep track of the first .toc or .got section for this input bfd. */
11353 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11357 htab->toc_bfd = isec->owner;
11358 htab->toc_first_sec = isec;
11361 addr = isec->output_offset + isec->output_section->vma;
11362 off = addr - htab->toc_curr;
11363 limit = 0x80008000;
11364 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11366 if (off + isec->size > limit)
11368 addr = (htab->toc_first_sec->output_offset
11369 + htab->toc_first_sec->output_section->vma);
11370 htab->toc_curr = addr;
11371 htab->toc_curr &= -TOC_BASE_ALIGN;
11374 /* toc_curr is the base address of this toc group. Set elf_gp
11375 for the input section to be the offset relative to the
11376 output toc base plus 0x8000. Making the input elf_gp an
11377 offset allows us to move the toc as a whole without
11378 recalculating input elf_gp. */
11379 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11380 off += TOC_BASE_OFF;
11382 /* Die if someone uses a linker script that doesn't keep input
11383 file .toc and .got together. */
11385 && elf_gp (isec->owner) != 0
11386 && elf_gp (isec->owner) != off)
11389 elf_gp (isec->owner) = off;
11393 /* During the second pass toc_first_sec points to the start of
11394 a toc group, and toc_curr is used to track the old elf_gp.
11395 We use toc_bfd to ensure we only look at each bfd once. */
11396 if (htab->toc_bfd == isec->owner)
11398 htab->toc_bfd = isec->owner;
11400 if (htab->toc_first_sec == NULL
11401 || htab->toc_curr != elf_gp (isec->owner))
11403 htab->toc_curr = elf_gp (isec->owner);
11404 htab->toc_first_sec = isec;
11406 addr = (htab->toc_first_sec->output_offset
11407 + htab->toc_first_sec->output_section->vma);
11408 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11409 elf_gp (isec->owner) = off;
11414 /* Called via elf_link_hash_traverse to merge GOT entries for global
11418 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11420 if (h->root.type == bfd_link_hash_indirect)
11423 merge_got_entries (&h->got.glist);
11428 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11432 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11434 struct got_entry *gent;
11436 if (h->root.type == bfd_link_hash_indirect)
11439 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11440 if (!gent->is_indirect)
11441 allocate_got (h, (struct bfd_link_info *) inf, gent);
11445 /* Called on the first multitoc pass after the last call to
11446 ppc64_elf_next_toc_section. This function removes duplicate GOT
11450 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11452 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11453 struct bfd *ibfd, *ibfd2;
11454 bfd_boolean done_something;
11456 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11458 if (!htab->do_multi_toc)
11461 /* Merge global sym got entries within a toc group. */
11462 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11464 /* And tlsld_got. */
11465 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11467 struct got_entry *ent, *ent2;
11469 if (!is_ppc64_elf (ibfd))
11472 ent = ppc64_tlsld_got (ibfd);
11473 if (!ent->is_indirect
11474 && ent->got.offset != (bfd_vma) -1)
11476 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11478 if (!is_ppc64_elf (ibfd2))
11481 ent2 = ppc64_tlsld_got (ibfd2);
11482 if (!ent2->is_indirect
11483 && ent2->got.offset != (bfd_vma) -1
11484 && elf_gp (ibfd2) == elf_gp (ibfd))
11486 ent2->is_indirect = TRUE;
11487 ent2->got.ent = ent;
11493 /* Zap sizes of got sections. */
11494 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11495 htab->elf.irelplt->size -= htab->got_reli_size;
11496 htab->got_reli_size = 0;
11498 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11500 asection *got, *relgot;
11502 if (!is_ppc64_elf (ibfd))
11505 got = ppc64_elf_tdata (ibfd)->got;
11508 got->rawsize = got->size;
11510 relgot = ppc64_elf_tdata (ibfd)->relgot;
11511 relgot->rawsize = relgot->size;
11516 /* Now reallocate the got, local syms first. We don't need to
11517 allocate section contents again since we never increase size. */
11518 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11520 struct got_entry **lgot_ents;
11521 struct got_entry **end_lgot_ents;
11522 struct plt_entry **local_plt;
11523 struct plt_entry **end_local_plt;
11524 unsigned char *lgot_masks;
11525 bfd_size_type locsymcount;
11526 Elf_Internal_Shdr *symtab_hdr;
11529 if (!is_ppc64_elf (ibfd))
11532 lgot_ents = elf_local_got_ents (ibfd);
11536 symtab_hdr = &elf_symtab_hdr (ibfd);
11537 locsymcount = symtab_hdr->sh_info;
11538 end_lgot_ents = lgot_ents + locsymcount;
11539 local_plt = (struct plt_entry **) end_lgot_ents;
11540 end_local_plt = local_plt + locsymcount;
11541 lgot_masks = (unsigned char *) end_local_plt;
11542 s = ppc64_elf_tdata (ibfd)->got;
11543 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11545 struct got_entry *ent;
11547 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11549 unsigned int ent_size = 8;
11550 unsigned int rel_size = sizeof (Elf64_External_Rela);
11552 ent->got.offset = s->size;
11553 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11558 s->size += ent_size;
11559 if ((*lgot_masks & PLT_IFUNC) != 0)
11561 htab->elf.irelplt->size += rel_size;
11562 htab->got_reli_size += rel_size;
11564 else if (bfd_link_pic (info))
11566 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11567 srel->size += rel_size;
11573 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11575 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11577 struct got_entry *ent;
11579 if (!is_ppc64_elf (ibfd))
11582 ent = ppc64_tlsld_got (ibfd);
11583 if (!ent->is_indirect
11584 && ent->got.offset != (bfd_vma) -1)
11586 asection *s = ppc64_elf_tdata (ibfd)->got;
11587 ent->got.offset = s->size;
11589 if (bfd_link_pic (info))
11591 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11592 srel->size += sizeof (Elf64_External_Rela);
11597 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11598 if (!done_something)
11599 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11603 if (!is_ppc64_elf (ibfd))
11606 got = ppc64_elf_tdata (ibfd)->got;
11609 done_something = got->rawsize != got->size;
11610 if (done_something)
11615 if (done_something)
11616 (*htab->params->layout_sections_again) ();
11618 /* Set up for second pass over toc sections to recalculate elf_gp
11619 on input sections. */
11620 htab->toc_bfd = NULL;
11621 htab->toc_first_sec = NULL;
11622 htab->second_toc_pass = TRUE;
11623 return done_something;
11626 /* Called after second pass of multitoc partitioning. */
11629 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11631 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11633 /* After the second pass, toc_curr tracks the TOC offset used
11634 for code sections below in ppc64_elf_next_input_section. */
11635 htab->toc_curr = TOC_BASE_OFF;
11638 /* No toc references were found in ISEC. If the code in ISEC makes no
11639 calls, then there's no need to use toc adjusting stubs when branching
11640 into ISEC. Actually, indirect calls from ISEC are OK as they will
11641 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11642 needed, and 2 if a cyclical call-graph was found but no other reason
11643 for a stub was detected. If called from the top level, a return of
11644 2 means the same as a return of 0. */
11647 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11651 /* Mark this section as checked. */
11652 isec->call_check_done = 1;
11654 /* We know none of our code bearing sections will need toc stubs. */
11655 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11658 if (isec->size == 0)
11661 if (isec->output_section == NULL)
11665 if (isec->reloc_count != 0)
11667 Elf_Internal_Rela *relstart, *rel;
11668 Elf_Internal_Sym *local_syms;
11669 struct ppc_link_hash_table *htab;
11671 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11672 info->keep_memory);
11673 if (relstart == NULL)
11676 /* Look for branches to outside of this section. */
11678 htab = ppc_hash_table (info);
11682 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11684 enum elf_ppc64_reloc_type r_type;
11685 unsigned long r_symndx;
11686 struct elf_link_hash_entry *h;
11687 struct ppc_link_hash_entry *eh;
11688 Elf_Internal_Sym *sym;
11690 struct _opd_sec_data *opd;
11694 r_type = ELF64_R_TYPE (rel->r_info);
11695 if (r_type != R_PPC64_REL24
11696 && r_type != R_PPC64_REL14
11697 && r_type != R_PPC64_REL14_BRTAKEN
11698 && r_type != R_PPC64_REL14_BRNTAKEN)
11701 r_symndx = ELF64_R_SYM (rel->r_info);
11702 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11709 /* Calls to dynamic lib functions go through a plt call stub
11711 eh = (struct ppc_link_hash_entry *) h;
11713 && (eh->elf.plt.plist != NULL
11715 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11721 if (sym_sec == NULL)
11722 /* Ignore other undefined symbols. */
11725 /* Assume branches to other sections not included in the
11726 link need stubs too, to cover -R and absolute syms. */
11727 if (sym_sec->output_section == NULL)
11734 sym_value = sym->st_value;
11737 if (h->root.type != bfd_link_hash_defined
11738 && h->root.type != bfd_link_hash_defweak)
11740 sym_value = h->root.u.def.value;
11742 sym_value += rel->r_addend;
11744 /* If this branch reloc uses an opd sym, find the code section. */
11745 opd = get_opd_info (sym_sec);
11748 if (h == NULL && opd->adjust != NULL)
11752 adjust = opd->adjust[OPD_NDX (sym_value)];
11754 /* Assume deleted functions won't ever be called. */
11756 sym_value += adjust;
11759 dest = opd_entry_value (sym_sec, sym_value,
11760 &sym_sec, NULL, FALSE);
11761 if (dest == (bfd_vma) -1)
11766 + sym_sec->output_offset
11767 + sym_sec->output_section->vma);
11769 /* Ignore branch to self. */
11770 if (sym_sec == isec)
11773 /* If the called function uses the toc, we need a stub. */
11774 if (sym_sec->has_toc_reloc
11775 || sym_sec->makes_toc_func_call)
11781 /* Assume any branch that needs a long branch stub might in fact
11782 need a plt_branch stub. A plt_branch stub uses r2. */
11783 else if (dest - (isec->output_offset
11784 + isec->output_section->vma
11785 + rel->r_offset) + (1 << 25)
11786 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11794 /* If calling back to a section in the process of being
11795 tested, we can't say for sure that no toc adjusting stubs
11796 are needed, so don't return zero. */
11797 else if (sym_sec->call_check_in_progress)
11800 /* Branches to another section that itself doesn't have any TOC
11801 references are OK. Recursively call ourselves to check. */
11802 else if (!sym_sec->call_check_done)
11806 /* Mark current section as indeterminate, so that other
11807 sections that call back to current won't be marked as
11809 isec->call_check_in_progress = 1;
11810 recur = toc_adjusting_stub_needed (info, sym_sec);
11811 isec->call_check_in_progress = 0;
11822 if (local_syms != NULL
11823 && (elf_symtab_hdr (isec->owner).contents
11824 != (unsigned char *) local_syms))
11826 if (elf_section_data (isec)->relocs != relstart)
11831 && isec->map_head.s != NULL
11832 && (strcmp (isec->output_section->name, ".init") == 0
11833 || strcmp (isec->output_section->name, ".fini") == 0))
11835 if (isec->map_head.s->has_toc_reloc
11836 || isec->map_head.s->makes_toc_func_call)
11838 else if (!isec->map_head.s->call_check_done)
11841 isec->call_check_in_progress = 1;
11842 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11843 isec->call_check_in_progress = 0;
11850 isec->makes_toc_func_call = 1;
11855 /* The linker repeatedly calls this function for each input section,
11856 in the order that input sections are linked into output sections.
11857 Build lists of input sections to determine groupings between which
11858 we may insert linker stubs. */
11861 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11863 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11868 if ((isec->output_section->flags & SEC_CODE) != 0
11869 && isec->output_section->id < htab->sec_info_arr_size)
11871 /* This happens to make the list in reverse order,
11872 which is what we want. */
11873 htab->sec_info[isec->id].u.list
11874 = htab->sec_info[isec->output_section->id].u.list;
11875 htab->sec_info[isec->output_section->id].u.list = isec;
11878 if (htab->multi_toc_needed)
11880 /* Analyse sections that aren't already flagged as needing a
11881 valid toc pointer. Exclude .fixup for the linux kernel.
11882 .fixup contains branches, but only back to the function that
11883 hit an exception. */
11884 if (!(isec->has_toc_reloc
11885 || (isec->flags & SEC_CODE) == 0
11886 || strcmp (isec->name, ".fixup") == 0
11887 || isec->call_check_done))
11889 if (toc_adjusting_stub_needed (info, isec) < 0)
11892 /* Make all sections use the TOC assigned for this object file.
11893 This will be wrong for pasted sections; We fix that in
11894 check_pasted_section(). */
11895 if (elf_gp (isec->owner) != 0)
11896 htab->toc_curr = elf_gp (isec->owner);
11899 htab->sec_info[isec->id].toc_off = htab->toc_curr;
11903 /* Check that all .init and .fini sections use the same toc, if they
11904 have toc relocs. */
11907 check_pasted_section (struct bfd_link_info *info, const char *name)
11909 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11913 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11914 bfd_vma toc_off = 0;
11917 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11918 if (i->has_toc_reloc)
11921 toc_off = htab->sec_info[i->id].toc_off;
11922 else if (toc_off != htab->sec_info[i->id].toc_off)
11927 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11928 if (i->makes_toc_func_call)
11930 toc_off = htab->sec_info[i->id].toc_off;
11934 /* Make sure the whole pasted function uses the same toc offset. */
11936 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11937 htab->sec_info[i->id].toc_off = toc_off;
11943 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11945 return (check_pasted_section (info, ".init")
11946 & check_pasted_section (info, ".fini"));
11949 /* See whether we can group stub sections together. Grouping stub
11950 sections may result in fewer stubs. More importantly, we need to
11951 put all .init* and .fini* stubs at the beginning of the .init or
11952 .fini output sections respectively, because glibc splits the
11953 _init and _fini functions into multiple parts. Putting a stub in
11954 the middle of a function is not a good idea. */
11957 group_sections (struct bfd_link_info *info,
11958 bfd_size_type stub_group_size,
11959 bfd_boolean stubs_always_before_branch)
11961 struct ppc_link_hash_table *htab;
11963 bfd_size_type stub14_group_size;
11964 bfd_boolean suppress_size_errors;
11966 htab = ppc_hash_table (info);
11970 suppress_size_errors = FALSE;
11971 stub14_group_size = stub_group_size >> 10;
11972 if (stub_group_size == 1)
11974 /* Default values. */
11975 if (stubs_always_before_branch)
11977 stub_group_size = 0x1e00000;
11978 stub14_group_size = 0x7800;
11982 stub_group_size = 0x1c00000;
11983 stub14_group_size = 0x7000;
11985 suppress_size_errors = TRUE;
11988 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
11992 if (osec->id >= htab->sec_info_arr_size)
11995 tail = htab->sec_info[osec->id].u.list;
11996 while (tail != NULL)
12000 bfd_size_type total;
12001 bfd_boolean big_sec;
12003 struct map_stub *group;
12006 total = tail->size;
12007 big_sec = total > (ppc64_elf_section_data (tail) != NULL
12008 && ppc64_elf_section_data (tail)->has_14bit_branch
12009 ? stub14_group_size : stub_group_size);
12010 if (big_sec && !suppress_size_errors)
12011 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
12012 tail->owner, tail);
12013 curr_toc = htab->sec_info[tail->id].toc_off;
12015 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12016 && ((total += curr->output_offset - prev->output_offset)
12017 < (ppc64_elf_section_data (prev) != NULL
12018 && ppc64_elf_section_data (prev)->has_14bit_branch
12019 ? stub14_group_size : stub_group_size))
12020 && htab->sec_info[prev->id].toc_off == curr_toc)
12023 /* OK, the size from the start of CURR to the end is less
12024 than stub_group_size and thus can be handled by one stub
12025 section. (or the tail section is itself larger than
12026 stub_group_size, in which case we may be toast.) We
12027 should really be keeping track of the total size of stubs
12028 added here, as stubs contribute to the final output
12029 section size. That's a little tricky, and this way will
12030 only break if stubs added make the total size more than
12031 2^25, ie. for the default stub_group_size, if stubs total
12032 more than 2097152 bytes, or nearly 75000 plt call stubs. */
12033 group = bfd_alloc (curr->owner, sizeof (*group));
12036 group->link_sec = curr;
12037 group->stub_sec = NULL;
12038 group->needs_save_res = 0;
12039 group->next = htab->group;
12040 htab->group = group;
12043 prev = htab->sec_info[tail->id].u.list;
12044 /* Set up this stub group. */
12045 htab->sec_info[tail->id].u.group = group;
12047 while (tail != curr && (tail = prev) != NULL);
12049 /* But wait, there's more! Input sections up to stub_group_size
12050 bytes before the stub section can be handled by it too.
12051 Don't do this if we have a really large section after the
12052 stubs, as adding more stubs increases the chance that
12053 branches may not reach into the stub section. */
12054 if (!stubs_always_before_branch && !big_sec)
12057 while (prev != NULL
12058 && ((total += tail->output_offset - prev->output_offset)
12059 < (ppc64_elf_section_data (prev) != NULL
12060 && ppc64_elf_section_data (prev)->has_14bit_branch
12061 ? stub14_group_size : stub_group_size))
12062 && htab->sec_info[prev->id].toc_off == curr_toc)
12065 prev = htab->sec_info[tail->id].u.list;
12066 htab->sec_info[tail->id].u.group = group;
12075 static const unsigned char glink_eh_frame_cie[] =
12077 0, 0, 0, 16, /* length. */
12078 0, 0, 0, 0, /* id. */
12079 1, /* CIE version. */
12080 'z', 'R', 0, /* Augmentation string. */
12081 4, /* Code alignment. */
12082 0x78, /* Data alignment. */
12084 1, /* Augmentation size. */
12085 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12086 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
12090 /* Stripping output sections is normally done before dynamic section
12091 symbols have been allocated. This function is called later, and
12092 handles cases like htab->brlt which is mapped to its own output
12096 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12098 if (isec->size == 0
12099 && isec->output_section->size == 0
12100 && !(isec->output_section->flags & SEC_KEEP)
12101 && !bfd_section_removed_from_list (info->output_bfd,
12102 isec->output_section)
12103 && elf_section_data (isec->output_section)->dynindx == 0)
12105 isec->output_section->flags |= SEC_EXCLUDE;
12106 bfd_section_list_remove (info->output_bfd, isec->output_section);
12107 info->output_bfd->section_count--;
12111 /* Determine and set the size of the stub section for a final link.
12113 The basic idea here is to examine all the relocations looking for
12114 PC-relative calls to a target that is unreachable with a "bl"
12118 ppc64_elf_size_stubs (struct bfd_link_info *info)
12120 bfd_size_type stub_group_size;
12121 bfd_boolean stubs_always_before_branch;
12122 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12127 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12128 htab->params->plt_thread_safe = 1;
12129 if (!htab->opd_abi)
12130 htab->params->plt_thread_safe = 0;
12131 else if (htab->params->plt_thread_safe == -1)
12133 static const char *const thread_starter[] =
12137 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12139 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12140 "mq_notify", "create_timer",
12145 "GOMP_parallel_start",
12146 "GOMP_parallel_loop_static",
12147 "GOMP_parallel_loop_static_start",
12148 "GOMP_parallel_loop_dynamic",
12149 "GOMP_parallel_loop_dynamic_start",
12150 "GOMP_parallel_loop_guided",
12151 "GOMP_parallel_loop_guided_start",
12152 "GOMP_parallel_loop_runtime",
12153 "GOMP_parallel_loop_runtime_start",
12154 "GOMP_parallel_sections",
12155 "GOMP_parallel_sections_start",
12161 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12163 struct elf_link_hash_entry *h;
12164 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12165 FALSE, FALSE, TRUE);
12166 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12167 if (htab->params->plt_thread_safe)
12171 stubs_always_before_branch = htab->params->group_size < 0;
12172 if (htab->params->group_size < 0)
12173 stub_group_size = -htab->params->group_size;
12175 stub_group_size = htab->params->group_size;
12177 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12183 unsigned int bfd_indx;
12184 struct map_stub *group;
12185 asection *stub_sec;
12187 htab->stub_iteration += 1;
12189 for (input_bfd = info->input_bfds, bfd_indx = 0;
12191 input_bfd = input_bfd->link.next, bfd_indx++)
12193 Elf_Internal_Shdr *symtab_hdr;
12195 Elf_Internal_Sym *local_syms = NULL;
12197 if (!is_ppc64_elf (input_bfd))
12200 /* We'll need the symbol table in a second. */
12201 symtab_hdr = &elf_symtab_hdr (input_bfd);
12202 if (symtab_hdr->sh_info == 0)
12205 /* Walk over each section attached to the input bfd. */
12206 for (section = input_bfd->sections;
12208 section = section->next)
12210 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12212 /* If there aren't any relocs, then there's nothing more
12214 if ((section->flags & SEC_RELOC) == 0
12215 || (section->flags & SEC_ALLOC) == 0
12216 || (section->flags & SEC_LOAD) == 0
12217 || (section->flags & SEC_CODE) == 0
12218 || section->reloc_count == 0)
12221 /* If this section is a link-once section that will be
12222 discarded, then don't create any stubs. */
12223 if (section->output_section == NULL
12224 || section->output_section->owner != info->output_bfd)
12227 /* Get the relocs. */
12229 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12230 info->keep_memory);
12231 if (internal_relocs == NULL)
12232 goto error_ret_free_local;
12234 /* Now examine each relocation. */
12235 irela = internal_relocs;
12236 irelaend = irela + section->reloc_count;
12237 for (; irela < irelaend; irela++)
12239 enum elf_ppc64_reloc_type r_type;
12240 unsigned int r_indx;
12241 enum ppc_stub_type stub_type;
12242 struct ppc_stub_hash_entry *stub_entry;
12243 asection *sym_sec, *code_sec;
12244 bfd_vma sym_value, code_value;
12245 bfd_vma destination;
12246 unsigned long local_off;
12247 bfd_boolean ok_dest;
12248 struct ppc_link_hash_entry *hash;
12249 struct ppc_link_hash_entry *fdh;
12250 struct elf_link_hash_entry *h;
12251 Elf_Internal_Sym *sym;
12253 const asection *id_sec;
12254 struct _opd_sec_data *opd;
12255 struct plt_entry *plt_ent;
12257 r_type = ELF64_R_TYPE (irela->r_info);
12258 r_indx = ELF64_R_SYM (irela->r_info);
12260 if (r_type >= R_PPC64_max)
12262 bfd_set_error (bfd_error_bad_value);
12263 goto error_ret_free_internal;
12266 /* Only look for stubs on branch instructions. */
12267 if (r_type != R_PPC64_REL24
12268 && r_type != R_PPC64_REL14
12269 && r_type != R_PPC64_REL14_BRTAKEN
12270 && r_type != R_PPC64_REL14_BRNTAKEN)
12273 /* Now determine the call target, its name, value,
12275 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12276 r_indx, input_bfd))
12277 goto error_ret_free_internal;
12278 hash = (struct ppc_link_hash_entry *) h;
12285 sym_value = sym->st_value;
12286 if (sym_sec != NULL
12287 && sym_sec->output_section != NULL)
12290 else if (hash->elf.root.type == bfd_link_hash_defined
12291 || hash->elf.root.type == bfd_link_hash_defweak)
12293 sym_value = hash->elf.root.u.def.value;
12294 if (sym_sec->output_section != NULL)
12297 else if (hash->elf.root.type == bfd_link_hash_undefweak
12298 || hash->elf.root.type == bfd_link_hash_undefined)
12300 /* Recognise an old ABI func code entry sym, and
12301 use the func descriptor sym instead if it is
12303 if (hash->elf.root.root.string[0] == '.'
12304 && (fdh = lookup_fdh (hash, htab)) != NULL)
12306 if (fdh->elf.root.type == bfd_link_hash_defined
12307 || fdh->elf.root.type == bfd_link_hash_defweak)
12309 sym_sec = fdh->elf.root.u.def.section;
12310 sym_value = fdh->elf.root.u.def.value;
12311 if (sym_sec->output_section != NULL)
12320 bfd_set_error (bfd_error_bad_value);
12321 goto error_ret_free_internal;
12328 sym_value += irela->r_addend;
12329 destination = (sym_value
12330 + sym_sec->output_offset
12331 + sym_sec->output_section->vma);
12332 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12337 code_sec = sym_sec;
12338 code_value = sym_value;
12339 opd = get_opd_info (sym_sec);
12344 if (hash == NULL && opd->adjust != NULL)
12346 long adjust = opd->adjust[OPD_NDX (sym_value)];
12349 code_value += adjust;
12350 sym_value += adjust;
12352 dest = opd_entry_value (sym_sec, sym_value,
12353 &code_sec, &code_value, FALSE);
12354 if (dest != (bfd_vma) -1)
12356 destination = dest;
12359 /* Fixup old ABI sym to point at code
12361 hash->elf.root.type = bfd_link_hash_defweak;
12362 hash->elf.root.u.def.section = code_sec;
12363 hash->elf.root.u.def.value = code_value;
12368 /* Determine what (if any) linker stub is needed. */
12370 stub_type = ppc_type_of_stub (section, irela, &hash,
12371 &plt_ent, destination,
12374 if (stub_type != ppc_stub_plt_call)
12376 /* Check whether we need a TOC adjusting stub.
12377 Since the linker pastes together pieces from
12378 different object files when creating the
12379 _init and _fini functions, it may be that a
12380 call to what looks like a local sym is in
12381 fact a call needing a TOC adjustment. */
12382 if (code_sec != NULL
12383 && code_sec->output_section != NULL
12384 && (htab->sec_info[code_sec->id].toc_off
12385 != htab->sec_info[section->id].toc_off)
12386 && (code_sec->has_toc_reloc
12387 || code_sec->makes_toc_func_call))
12388 stub_type = ppc_stub_long_branch_r2off;
12391 if (stub_type == ppc_stub_none)
12394 /* __tls_get_addr calls might be eliminated. */
12395 if (stub_type != ppc_stub_plt_call
12397 && (hash == htab->tls_get_addr
12398 || hash == htab->tls_get_addr_fd)
12399 && section->has_tls_reloc
12400 && irela != internal_relocs)
12402 /* Get tls info. */
12403 unsigned char *tls_mask;
12405 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12406 irela - 1, input_bfd))
12407 goto error_ret_free_internal;
12408 if (*tls_mask != 0)
12412 if (stub_type == ppc_stub_plt_call
12413 && irela + 1 < irelaend
12414 && irela[1].r_offset == irela->r_offset + 4
12415 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12417 if (!tocsave_find (htab, INSERT,
12418 &local_syms, irela + 1, input_bfd))
12419 goto error_ret_free_internal;
12421 else if (stub_type == ppc_stub_plt_call)
12422 stub_type = ppc_stub_plt_call_r2save;
12424 /* Support for grouping stub sections. */
12425 id_sec = htab->sec_info[section->id].u.group->link_sec;
12427 /* Get the name of this stub. */
12428 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12430 goto error_ret_free_internal;
12432 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12433 stub_name, FALSE, FALSE);
12434 if (stub_entry != NULL)
12436 /* The proper stub has already been created. */
12438 if (stub_type == ppc_stub_plt_call_r2save)
12439 stub_entry->stub_type = stub_type;
12443 stub_entry = ppc_add_stub (stub_name, section, info);
12444 if (stub_entry == NULL)
12447 error_ret_free_internal:
12448 if (elf_section_data (section)->relocs == NULL)
12449 free (internal_relocs);
12450 error_ret_free_local:
12451 if (local_syms != NULL
12452 && (symtab_hdr->contents
12453 != (unsigned char *) local_syms))
12458 stub_entry->stub_type = stub_type;
12459 if (stub_type != ppc_stub_plt_call
12460 && stub_type != ppc_stub_plt_call_r2save)
12462 stub_entry->target_value = code_value;
12463 stub_entry->target_section = code_sec;
12467 stub_entry->target_value = sym_value;
12468 stub_entry->target_section = sym_sec;
12470 stub_entry->h = hash;
12471 stub_entry->plt_ent = plt_ent;
12472 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12474 if (stub_entry->h != NULL)
12475 htab->stub_globals += 1;
12478 /* We're done with the internal relocs, free them. */
12479 if (elf_section_data (section)->relocs != internal_relocs)
12480 free (internal_relocs);
12483 if (local_syms != NULL
12484 && symtab_hdr->contents != (unsigned char *) local_syms)
12486 if (!info->keep_memory)
12489 symtab_hdr->contents = (unsigned char *) local_syms;
12493 /* We may have added some stubs. Find out the new size of the
12495 for (stub_sec = htab->params->stub_bfd->sections;
12497 stub_sec = stub_sec->next)
12498 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12500 stub_sec->rawsize = stub_sec->size;
12501 stub_sec->size = 0;
12502 stub_sec->reloc_count = 0;
12503 stub_sec->flags &= ~SEC_RELOC;
12506 htab->brlt->size = 0;
12507 htab->brlt->reloc_count = 0;
12508 htab->brlt->flags &= ~SEC_RELOC;
12509 if (htab->relbrlt != NULL)
12510 htab->relbrlt->size = 0;
12512 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12514 for (group = htab->group; group != NULL; group = group->next)
12515 if (group->needs_save_res)
12516 group->stub_sec->size += htab->sfpr->size;
12518 if (info->emitrelocations
12519 && htab->glink != NULL && htab->glink->size != 0)
12521 htab->glink->reloc_count = 1;
12522 htab->glink->flags |= SEC_RELOC;
12525 if (htab->glink_eh_frame != NULL
12526 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12527 && htab->glink_eh_frame->output_section->size != 0)
12529 size_t size = 0, align;
12531 for (stub_sec = htab->params->stub_bfd->sections;
12533 stub_sec = stub_sec->next)
12534 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12536 if (htab->glink != NULL && htab->glink->size != 0)
12539 size += sizeof (glink_eh_frame_cie);
12541 align <<= htab->glink_eh_frame->output_section->alignment_power;
12543 size = (size + align) & ~align;
12544 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12545 htab->glink_eh_frame->size = size;
12548 if (htab->params->plt_stub_align != 0)
12549 for (stub_sec = htab->params->stub_bfd->sections;
12551 stub_sec = stub_sec->next)
12552 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12553 stub_sec->size = ((stub_sec->size
12554 + (1 << htab->params->plt_stub_align) - 1)
12555 & -(1 << htab->params->plt_stub_align));
12557 for (stub_sec = htab->params->stub_bfd->sections;
12559 stub_sec = stub_sec->next)
12560 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12561 && stub_sec->rawsize != stub_sec->size)
12564 /* Exit from this loop when no stubs have been added, and no stubs
12565 have changed size. */
12566 if (stub_sec == NULL
12567 && (htab->glink_eh_frame == NULL
12568 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12571 /* Ask the linker to do its stuff. */
12572 (*htab->params->layout_sections_again) ();
12575 if (htab->glink_eh_frame != NULL
12576 && htab->glink_eh_frame->size != 0)
12579 bfd_byte *p, *last_fde;
12580 size_t last_fde_len, size, align, pad;
12581 asection *stub_sec;
12583 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12586 htab->glink_eh_frame->contents = p;
12589 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12590 /* CIE length (rewrite in case little-endian). */
12591 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12592 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12593 p += sizeof (glink_eh_frame_cie);
12595 for (stub_sec = htab->params->stub_bfd->sections;
12597 stub_sec = stub_sec->next)
12598 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12603 bfd_put_32 (htab->elf.dynobj, 20, p);
12606 val = p - htab->glink_eh_frame->contents;
12607 bfd_put_32 (htab->elf.dynobj, val, p);
12609 /* Offset to stub section, written later. */
12611 /* stub section size. */
12612 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12614 /* Augmentation. */
12619 if (htab->glink != NULL && htab->glink->size != 0)
12624 bfd_put_32 (htab->elf.dynobj, 20, p);
12627 val = p - htab->glink_eh_frame->contents;
12628 bfd_put_32 (htab->elf.dynobj, val, p);
12630 /* Offset to .glink, written later. */
12633 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12635 /* Augmentation. */
12638 *p++ = DW_CFA_advance_loc + 1;
12639 *p++ = DW_CFA_register;
12641 *p++ = htab->opd_abi ? 12 : 0;
12642 *p++ = DW_CFA_advance_loc + 4;
12643 *p++ = DW_CFA_restore_extended;
12646 /* Subsume any padding into the last FDE if user .eh_frame
12647 sections are aligned more than glink_eh_frame. Otherwise any
12648 zero padding will be seen as a terminator. */
12649 size = p - htab->glink_eh_frame->contents;
12651 align <<= htab->glink_eh_frame->output_section->alignment_power;
12653 pad = ((size + align) & ~align) - size;
12654 htab->glink_eh_frame->size = size + pad;
12655 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12658 maybe_strip_output (info, htab->brlt);
12659 if (htab->glink_eh_frame != NULL)
12660 maybe_strip_output (info, htab->glink_eh_frame);
12665 /* Called after we have determined section placement. If sections
12666 move, we'll be called again. Provide a value for TOCstart. */
12669 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12672 bfd_vma TOCstart, adjust;
12676 struct elf_link_hash_entry *h;
12677 struct elf_link_hash_table *htab = elf_hash_table (info);
12679 if (is_elf_hash_table (htab)
12680 && htab->hgot != NULL)
12684 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12685 if (is_elf_hash_table (htab))
12689 && h->root.type == bfd_link_hash_defined
12690 && !h->root.linker_def
12691 && (!is_elf_hash_table (htab)
12692 || h->def_regular))
12694 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12695 + h->root.u.def.section->output_offset
12696 + h->root.u.def.section->output_section->vma);
12697 _bfd_set_gp_value (obfd, TOCstart);
12702 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12703 order. The TOC starts where the first of these sections starts. */
12704 s = bfd_get_section_by_name (obfd, ".got");
12705 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12706 s = bfd_get_section_by_name (obfd, ".toc");
12707 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12708 s = bfd_get_section_by_name (obfd, ".tocbss");
12709 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12710 s = bfd_get_section_by_name (obfd, ".plt");
12711 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12713 /* This may happen for
12714 o references to TOC base (SYM@toc / TOC[tc0]) without a
12716 o bad linker script
12717 o --gc-sections and empty TOC sections
12719 FIXME: Warn user? */
12721 /* Look for a likely section. We probably won't even be
12723 for (s = obfd->sections; s != NULL; s = s->next)
12724 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12726 == (SEC_ALLOC | SEC_SMALL_DATA))
12729 for (s = obfd->sections; s != NULL; s = s->next)
12730 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12731 == (SEC_ALLOC | SEC_SMALL_DATA))
12734 for (s = obfd->sections; s != NULL; s = s->next)
12735 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12739 for (s = obfd->sections; s != NULL; s = s->next)
12740 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12746 TOCstart = s->output_section->vma + s->output_offset;
12748 /* Force alignment. */
12749 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12750 TOCstart -= adjust;
12751 _bfd_set_gp_value (obfd, TOCstart);
12753 if (info != NULL && s != NULL)
12755 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12759 if (htab->elf.hgot != NULL)
12761 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
12762 htab->elf.hgot->root.u.def.section = s;
12767 struct bfd_link_hash_entry *bh = NULL;
12768 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12769 s, TOC_BASE_OFF - adjust,
12770 NULL, FALSE, FALSE, &bh);
12776 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12777 write out any global entry stubs. */
12780 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12782 struct bfd_link_info *info;
12783 struct ppc_link_hash_table *htab;
12784 struct plt_entry *pent;
12787 if (h->root.type == bfd_link_hash_indirect)
12790 if (!h->pointer_equality_needed)
12793 if (h->def_regular)
12797 htab = ppc_hash_table (info);
12802 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12803 if (pent->plt.offset != (bfd_vma) -1
12804 && pent->addend == 0)
12810 p = s->contents + h->root.u.def.value;
12811 plt = htab->elf.splt;
12812 if (!htab->elf.dynamic_sections_created
12813 || h->dynindx == -1)
12814 plt = htab->elf.iplt;
12815 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12816 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12818 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12820 info->callbacks->einfo
12821 (_("%P: linkage table error against `%T'\n"),
12822 h->root.root.string);
12823 bfd_set_error (bfd_error_bad_value);
12824 htab->stub_error = TRUE;
12827 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12828 if (htab->params->emit_stub_syms)
12830 size_t len = strlen (h->root.root.string);
12831 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12836 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12837 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12840 if (h->root.type == bfd_link_hash_new)
12842 h->root.type = bfd_link_hash_defined;
12843 h->root.u.def.section = s;
12844 h->root.u.def.value = p - s->contents;
12845 h->ref_regular = 1;
12846 h->def_regular = 1;
12847 h->ref_regular_nonweak = 1;
12848 h->forced_local = 1;
12850 h->root.linker_def = 1;
12854 if (PPC_HA (off) != 0)
12856 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12859 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12861 bfd_put_32 (s->owner, MTCTR_R12, p);
12863 bfd_put_32 (s->owner, BCTR, p);
12869 /* Build all the stubs associated with the current output file.
12870 The stubs are kept in a hash table attached to the main linker
12871 hash table. This function is called via gldelf64ppc_finish. */
12874 ppc64_elf_build_stubs (struct bfd_link_info *info,
12877 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12878 struct map_stub *group;
12879 asection *stub_sec;
12881 int stub_sec_count = 0;
12886 /* Allocate memory to hold the linker stubs. */
12887 for (stub_sec = htab->params->stub_bfd->sections;
12889 stub_sec = stub_sec->next)
12890 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12891 && stub_sec->size != 0)
12893 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12894 if (stub_sec->contents == NULL)
12896 /* We want to check that built size is the same as calculated
12897 size. rawsize is a convenient location to use. */
12898 stub_sec->rawsize = stub_sec->size;
12899 stub_sec->size = 0;
12902 if (htab->glink != NULL && htab->glink->size != 0)
12907 /* Build the .glink plt call stub. */
12908 if (htab->params->emit_stub_syms)
12910 struct elf_link_hash_entry *h;
12911 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12912 TRUE, FALSE, FALSE);
12915 if (h->root.type == bfd_link_hash_new)
12917 h->root.type = bfd_link_hash_defined;
12918 h->root.u.def.section = htab->glink;
12919 h->root.u.def.value = 8;
12920 h->ref_regular = 1;
12921 h->def_regular = 1;
12922 h->ref_regular_nonweak = 1;
12923 h->forced_local = 1;
12925 h->root.linker_def = 1;
12928 plt0 = (htab->elf.splt->output_section->vma
12929 + htab->elf.splt->output_offset
12931 if (info->emitrelocations)
12933 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12936 r->r_offset = (htab->glink->output_offset
12937 + htab->glink->output_section->vma);
12938 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12939 r->r_addend = plt0;
12941 p = htab->glink->contents;
12942 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12943 bfd_put_64 (htab->glink->owner, plt0, p);
12947 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12949 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12951 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12953 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12955 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12957 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12959 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12961 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12963 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12965 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12970 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12972 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12974 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12976 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12978 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12980 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12982 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12984 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12986 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12988 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12990 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12992 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12995 bfd_put_32 (htab->glink->owner, BCTR, p);
12997 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12999 bfd_put_32 (htab->glink->owner, NOP, p);
13003 /* Build the .glink lazy link call stubs. */
13005 while (p < htab->glink->contents + htab->glink->rawsize)
13011 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13016 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13018 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13023 bfd_put_32 (htab->glink->owner,
13024 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13029 /* Build .glink global entry stubs. */
13030 if (htab->glink->size > htab->glink->rawsize)
13031 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13034 if (htab->brlt != NULL && htab->brlt->size != 0)
13036 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13038 if (htab->brlt->contents == NULL)
13041 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13043 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13044 htab->relbrlt->size);
13045 if (htab->relbrlt->contents == NULL)
13049 /* Build the stubs as directed by the stub hash table. */
13050 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13052 for (group = htab->group; group != NULL; group = group->next)
13053 if (group->needs_save_res)
13055 stub_sec = group->stub_sec;
13056 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13058 if (htab->params->emit_stub_syms)
13062 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13063 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13066 stub_sec->size += htab->sfpr->size;
13069 if (htab->relbrlt != NULL)
13070 htab->relbrlt->reloc_count = 0;
13072 if (htab->params->plt_stub_align != 0)
13073 for (stub_sec = htab->params->stub_bfd->sections;
13075 stub_sec = stub_sec->next)
13076 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13077 stub_sec->size = ((stub_sec->size
13078 + (1 << htab->params->plt_stub_align) - 1)
13079 & -(1 << htab->params->plt_stub_align));
13081 for (stub_sec = htab->params->stub_bfd->sections;
13083 stub_sec = stub_sec->next)
13084 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13086 stub_sec_count += 1;
13087 if (stub_sec->rawsize != stub_sec->size)
13091 /* Note that the glink_eh_frame check here is not only testing that
13092 the generated size matched the calculated size but also that
13093 bfd_elf_discard_info didn't make any changes to the section. */
13094 if (stub_sec != NULL
13095 || (htab->glink_eh_frame != NULL
13096 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
13098 htab->stub_error = TRUE;
13099 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13102 if (htab->stub_error)
13107 *stats = bfd_malloc (500);
13108 if (*stats == NULL)
13111 sprintf (*stats, _("linker stubs in %u group%s\n"
13113 " toc adjust %lu\n"
13114 " long branch %lu\n"
13115 " long toc adj %lu\n"
13117 " plt call toc %lu\n"
13118 " global entry %lu"),
13120 stub_sec_count == 1 ? "" : "s",
13121 htab->stub_count[ppc_stub_long_branch - 1],
13122 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13123 htab->stub_count[ppc_stub_plt_branch - 1],
13124 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13125 htab->stub_count[ppc_stub_plt_call - 1],
13126 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13127 htab->stub_count[ppc_stub_global_entry - 1]);
13132 /* This function undoes the changes made by add_symbol_adjust. */
13135 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
13137 struct ppc_link_hash_entry *eh;
13139 if (h->root.type == bfd_link_hash_indirect)
13142 eh = (struct ppc_link_hash_entry *) h;
13143 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
13146 eh->elf.root.type = bfd_link_hash_undefined;
13151 ppc64_elf_restore_symbols (struct bfd_link_info *info)
13153 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13156 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
13159 /* What to do when ld finds relocations against symbols defined in
13160 discarded sections. */
13162 static unsigned int
13163 ppc64_elf_action_discarded (asection *sec)
13165 if (strcmp (".opd", sec->name) == 0)
13168 if (strcmp (".toc", sec->name) == 0)
13171 if (strcmp (".toc1", sec->name) == 0)
13174 return _bfd_elf_default_action_discarded (sec);
13177 /* The RELOCATE_SECTION function is called by the ELF backend linker
13178 to handle the relocations for a section.
13180 The relocs are always passed as Rela structures; if the section
13181 actually uses Rel structures, the r_addend field will always be
13184 This function is responsible for adjust the section contents as
13185 necessary, and (if using Rela relocs and generating a
13186 relocatable output file) adjusting the reloc addend as
13189 This function does not have to worry about setting the reloc
13190 address or the reloc symbol index.
13192 LOCAL_SYMS is a pointer to the swapped in local symbols.
13194 LOCAL_SECTIONS is an array giving the section in the input file
13195 corresponding to the st_shndx field of each local symbol.
13197 The global hash table entry for the global symbols can be found
13198 via elf_sym_hashes (input_bfd).
13200 When generating relocatable output, this function must handle
13201 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13202 going to be the section symbol corresponding to the output
13203 section, which means that the addend must be adjusted
13207 ppc64_elf_relocate_section (bfd *output_bfd,
13208 struct bfd_link_info *info,
13210 asection *input_section,
13211 bfd_byte *contents,
13212 Elf_Internal_Rela *relocs,
13213 Elf_Internal_Sym *local_syms,
13214 asection **local_sections)
13216 struct ppc_link_hash_table *htab;
13217 Elf_Internal_Shdr *symtab_hdr;
13218 struct elf_link_hash_entry **sym_hashes;
13219 Elf_Internal_Rela *rel;
13220 Elf_Internal_Rela *wrel;
13221 Elf_Internal_Rela *relend;
13222 Elf_Internal_Rela outrel;
13224 struct got_entry **local_got_ents;
13226 bfd_boolean ret = TRUE;
13227 bfd_boolean is_opd;
13228 /* Assume 'at' branch hints. */
13229 bfd_boolean is_isa_v2 = TRUE;
13230 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
13232 /* Initialize howto table if needed. */
13233 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13236 htab = ppc_hash_table (info);
13240 /* Don't relocate stub sections. */
13241 if (input_section->owner == htab->params->stub_bfd)
13244 BFD_ASSERT (is_ppc64_elf (input_bfd));
13246 local_got_ents = elf_local_got_ents (input_bfd);
13247 TOCstart = elf_gp (output_bfd);
13248 symtab_hdr = &elf_symtab_hdr (input_bfd);
13249 sym_hashes = elf_sym_hashes (input_bfd);
13250 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13252 rel = wrel = relocs;
13253 relend = relocs + input_section->reloc_count;
13254 for (; rel < relend; wrel++, rel++)
13256 enum elf_ppc64_reloc_type r_type;
13258 bfd_reloc_status_type r;
13259 Elf_Internal_Sym *sym;
13261 struct elf_link_hash_entry *h_elf;
13262 struct ppc_link_hash_entry *h;
13263 struct ppc_link_hash_entry *fdh;
13264 const char *sym_name;
13265 unsigned long r_symndx, toc_symndx;
13266 bfd_vma toc_addend;
13267 unsigned char tls_mask, tls_gd, tls_type;
13268 unsigned char sym_type;
13269 bfd_vma relocation;
13270 bfd_boolean unresolved_reloc;
13271 bfd_boolean warned;
13272 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13275 struct ppc_stub_hash_entry *stub_entry;
13276 bfd_vma max_br_offset;
13278 Elf_Internal_Rela orig_rel;
13279 reloc_howto_type *howto;
13280 struct reloc_howto_struct alt_howto;
13285 r_type = ELF64_R_TYPE (rel->r_info);
13286 r_symndx = ELF64_R_SYM (rel->r_info);
13288 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13289 symbol of the previous ADDR64 reloc. The symbol gives us the
13290 proper TOC base to use. */
13291 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13293 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13295 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13301 unresolved_reloc = FALSE;
13304 if (r_symndx < symtab_hdr->sh_info)
13306 /* It's a local symbol. */
13307 struct _opd_sec_data *opd;
13309 sym = local_syms + r_symndx;
13310 sec = local_sections[r_symndx];
13311 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13312 sym_type = ELF64_ST_TYPE (sym->st_info);
13313 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13314 opd = get_opd_info (sec);
13315 if (opd != NULL && opd->adjust != NULL)
13317 long adjust = opd->adjust[OPD_NDX (sym->st_value
13323 /* If this is a relocation against the opd section sym
13324 and we have edited .opd, adjust the reloc addend so
13325 that ld -r and ld --emit-relocs output is correct.
13326 If it is a reloc against some other .opd symbol,
13327 then the symbol value will be adjusted later. */
13328 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13329 rel->r_addend += adjust;
13331 relocation += adjust;
13337 bfd_boolean ignored;
13339 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13340 r_symndx, symtab_hdr, sym_hashes,
13341 h_elf, sec, relocation,
13342 unresolved_reloc, warned, ignored);
13343 sym_name = h_elf->root.root.string;
13344 sym_type = h_elf->type;
13346 && sec->owner == output_bfd
13347 && strcmp (sec->name, ".opd") == 0)
13349 /* This is a symbol defined in a linker script. All
13350 such are defined in output sections, even those
13351 defined by simple assignment from a symbol defined in
13352 an input section. Transfer the symbol to an
13353 appropriate input .opd section, so that a branch to
13354 this symbol will be mapped to the location specified
13355 by the opd entry. */
13356 struct bfd_link_order *lo;
13357 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13358 if (lo->type == bfd_indirect_link_order)
13360 asection *isec = lo->u.indirect.section;
13361 if (h_elf->root.u.def.value >= isec->output_offset
13362 && h_elf->root.u.def.value < (isec->output_offset
13365 h_elf->root.u.def.value -= isec->output_offset;
13366 h_elf->root.u.def.section = isec;
13373 h = (struct ppc_link_hash_entry *) h_elf;
13375 if (sec != NULL && discarded_section (sec))
13377 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13378 input_bfd, input_section,
13379 contents + rel->r_offset);
13380 wrel->r_offset = rel->r_offset;
13382 wrel->r_addend = 0;
13384 /* For ld -r, remove relocations in debug sections against
13385 sections defined in discarded sections. Not done for
13386 non-debug to preserve relocs in .eh_frame which the
13387 eh_frame editing code expects to be present. */
13388 if (bfd_link_relocatable (info)
13389 && (input_section->flags & SEC_DEBUGGING))
13395 if (bfd_link_relocatable (info))
13398 if (h != NULL && &h->elf == htab->elf.hgot)
13400 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13401 sec = bfd_abs_section_ptr;
13402 unresolved_reloc = FALSE;
13405 /* TLS optimizations. Replace instruction sequences and relocs
13406 based on information we collected in tls_optimize. We edit
13407 RELOCS so that --emit-relocs will output something sensible
13408 for the final instruction stream. */
13413 tls_mask = h->tls_mask;
13414 else if (local_got_ents != NULL)
13416 struct plt_entry **local_plt = (struct plt_entry **)
13417 (local_got_ents + symtab_hdr->sh_info);
13418 unsigned char *lgot_masks = (unsigned char *)
13419 (local_plt + symtab_hdr->sh_info);
13420 tls_mask = lgot_masks[r_symndx];
13423 && (r_type == R_PPC64_TLS
13424 || r_type == R_PPC64_TLSGD
13425 || r_type == R_PPC64_TLSLD))
13427 /* Check for toc tls entries. */
13428 unsigned char *toc_tls;
13430 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13431 &local_syms, rel, input_bfd))
13435 tls_mask = *toc_tls;
13438 /* Check that tls relocs are used with tls syms, and non-tls
13439 relocs are used with non-tls syms. */
13440 if (r_symndx != STN_UNDEF
13441 && r_type != R_PPC64_NONE
13443 || h->elf.root.type == bfd_link_hash_defined
13444 || h->elf.root.type == bfd_link_hash_defweak)
13445 && (IS_PPC64_TLS_RELOC (r_type)
13446 != (sym_type == STT_TLS
13447 || (sym_type == STT_SECTION
13448 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13451 && (r_type == R_PPC64_TLS
13452 || r_type == R_PPC64_TLSGD
13453 || r_type == R_PPC64_TLSLD))
13454 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13457 info->callbacks->einfo
13458 (!IS_PPC64_TLS_RELOC (r_type)
13459 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13460 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13461 input_bfd, input_section, rel->r_offset,
13462 ppc64_elf_howto_table[r_type]->name,
13466 /* Ensure reloc mapping code below stays sane. */
13467 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13468 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13469 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13470 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13471 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13472 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13473 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13474 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13475 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13476 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13484 case R_PPC64_LO_DS_OPT:
13485 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13486 if ((insn & (0x3f << 26)) != 58u << 26)
13488 insn += (14u << 26) - (58u << 26);
13489 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13490 r_type = R_PPC64_TOC16_LO;
13491 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13494 case R_PPC64_TOC16:
13495 case R_PPC64_TOC16_LO:
13496 case R_PPC64_TOC16_DS:
13497 case R_PPC64_TOC16_LO_DS:
13499 /* Check for toc tls entries. */
13500 unsigned char *toc_tls;
13503 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13504 &local_syms, rel, input_bfd);
13510 tls_mask = *toc_tls;
13511 if (r_type == R_PPC64_TOC16_DS
13512 || r_type == R_PPC64_TOC16_LO_DS)
13515 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13520 /* If we found a GD reloc pair, then we might be
13521 doing a GD->IE transition. */
13524 tls_gd = TLS_TPRELGD;
13525 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13528 else if (retval == 3)
13530 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13538 case R_PPC64_GOT_TPREL16_HI:
13539 case R_PPC64_GOT_TPREL16_HA:
13541 && (tls_mask & TLS_TPREL) == 0)
13543 rel->r_offset -= d_offset;
13544 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13545 r_type = R_PPC64_NONE;
13546 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13550 case R_PPC64_GOT_TPREL16_DS:
13551 case R_PPC64_GOT_TPREL16_LO_DS:
13553 && (tls_mask & TLS_TPREL) == 0)
13556 insn = bfd_get_32 (output_bfd,
13557 contents + rel->r_offset - d_offset);
13559 insn |= 0x3c0d0000; /* addis 0,13,0 */
13560 bfd_put_32 (output_bfd, insn,
13561 contents + rel->r_offset - d_offset);
13562 r_type = R_PPC64_TPREL16_HA;
13563 if (toc_symndx != 0)
13565 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13566 rel->r_addend = toc_addend;
13567 /* We changed the symbol. Start over in order to
13568 get h, sym, sec etc. right. */
13572 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13578 && (tls_mask & TLS_TPREL) == 0)
13580 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13581 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13584 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13585 /* Was PPC64_TLS which sits on insn boundary, now
13586 PPC64_TPREL16_LO which is at low-order half-word. */
13587 rel->r_offset += d_offset;
13588 r_type = R_PPC64_TPREL16_LO;
13589 if (toc_symndx != 0)
13591 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13592 rel->r_addend = toc_addend;
13593 /* We changed the symbol. Start over in order to
13594 get h, sym, sec etc. right. */
13598 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13602 case R_PPC64_GOT_TLSGD16_HI:
13603 case R_PPC64_GOT_TLSGD16_HA:
13604 tls_gd = TLS_TPRELGD;
13605 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13609 case R_PPC64_GOT_TLSLD16_HI:
13610 case R_PPC64_GOT_TLSLD16_HA:
13611 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13614 if ((tls_mask & tls_gd) != 0)
13615 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13616 + R_PPC64_GOT_TPREL16_DS);
13619 rel->r_offset -= d_offset;
13620 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13621 r_type = R_PPC64_NONE;
13623 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13627 case R_PPC64_GOT_TLSGD16:
13628 case R_PPC64_GOT_TLSGD16_LO:
13629 tls_gd = TLS_TPRELGD;
13630 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13634 case R_PPC64_GOT_TLSLD16:
13635 case R_PPC64_GOT_TLSLD16_LO:
13636 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13638 unsigned int insn1, insn2, insn3;
13642 offset = (bfd_vma) -1;
13643 /* If not using the newer R_PPC64_TLSGD/LD to mark
13644 __tls_get_addr calls, we must trust that the call
13645 stays with its arg setup insns, ie. that the next
13646 reloc is the __tls_get_addr call associated with
13647 the current reloc. Edit both insns. */
13648 if (input_section->has_tls_get_addr_call
13649 && rel + 1 < relend
13650 && branch_reloc_hash_match (input_bfd, rel + 1,
13651 htab->tls_get_addr,
13652 htab->tls_get_addr_fd))
13653 offset = rel[1].r_offset;
13654 /* We read the low GOT_TLS (or TOC16) insn because we
13655 need to keep the destination reg. It may be
13656 something other than the usual r3, and moved to r3
13657 before the call by intervening code. */
13658 insn1 = bfd_get_32 (output_bfd,
13659 contents + rel->r_offset - d_offset);
13660 if ((tls_mask & tls_gd) != 0)
13663 insn1 &= (0x1f << 21) | (0x1f << 16);
13664 insn1 |= 58 << 26; /* ld */
13665 insn2 = 0x7c636a14; /* add 3,3,13 */
13666 if (offset != (bfd_vma) -1)
13667 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13668 if ((tls_mask & TLS_EXPLICIT) == 0)
13669 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13670 + R_PPC64_GOT_TPREL16_DS);
13672 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13673 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13678 insn1 &= 0x1f << 21;
13679 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13680 insn2 = 0x38630000; /* addi 3,3,0 */
13683 /* Was an LD reloc. */
13685 sec = local_sections[toc_symndx];
13687 r_symndx < symtab_hdr->sh_info;
13689 if (local_sections[r_symndx] == sec)
13691 if (r_symndx >= symtab_hdr->sh_info)
13692 r_symndx = STN_UNDEF;
13693 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13694 if (r_symndx != STN_UNDEF)
13695 rel->r_addend -= (local_syms[r_symndx].st_value
13696 + sec->output_offset
13697 + sec->output_section->vma);
13699 else if (toc_symndx != 0)
13701 r_symndx = toc_symndx;
13702 rel->r_addend = toc_addend;
13704 r_type = R_PPC64_TPREL16_HA;
13705 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13706 if (offset != (bfd_vma) -1)
13708 rel[1].r_info = ELF64_R_INFO (r_symndx,
13709 R_PPC64_TPREL16_LO);
13710 rel[1].r_offset = offset + d_offset;
13711 rel[1].r_addend = rel->r_addend;
13714 bfd_put_32 (output_bfd, insn1,
13715 contents + rel->r_offset - d_offset);
13716 if (offset != (bfd_vma) -1)
13718 insn3 = bfd_get_32 (output_bfd,
13719 contents + offset + 4);
13721 || insn3 == CROR_151515 || insn3 == CROR_313131)
13723 rel[1].r_offset += 4;
13724 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13727 bfd_put_32 (output_bfd, insn2, contents + offset);
13729 if ((tls_mask & tls_gd) == 0
13730 && (tls_gd == 0 || toc_symndx != 0))
13732 /* We changed the symbol. Start over in order
13733 to get h, sym, sec etc. right. */
13739 case R_PPC64_TLSGD:
13740 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13742 unsigned int insn2, insn3;
13743 bfd_vma offset = rel->r_offset;
13745 if ((tls_mask & TLS_TPRELGD) != 0)
13748 r_type = R_PPC64_NONE;
13749 insn2 = 0x7c636a14; /* add 3,3,13 */
13754 if (toc_symndx != 0)
13756 r_symndx = toc_symndx;
13757 rel->r_addend = toc_addend;
13759 r_type = R_PPC64_TPREL16_LO;
13760 rel->r_offset = offset + d_offset;
13761 insn2 = 0x38630000; /* addi 3,3,0 */
13763 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13764 /* Zap the reloc on the _tls_get_addr call too. */
13765 BFD_ASSERT (offset == rel[1].r_offset);
13766 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13767 insn3 = bfd_get_32 (output_bfd,
13768 contents + offset + 4);
13770 || insn3 == CROR_151515 || insn3 == CROR_313131)
13772 rel->r_offset += 4;
13773 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13776 bfd_put_32 (output_bfd, insn2, contents + offset);
13777 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13782 case R_PPC64_TLSLD:
13783 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13785 unsigned int insn2, insn3;
13786 bfd_vma offset = rel->r_offset;
13789 sec = local_sections[toc_symndx];
13791 r_symndx < symtab_hdr->sh_info;
13793 if (local_sections[r_symndx] == sec)
13795 if (r_symndx >= symtab_hdr->sh_info)
13796 r_symndx = STN_UNDEF;
13797 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13798 if (r_symndx != STN_UNDEF)
13799 rel->r_addend -= (local_syms[r_symndx].st_value
13800 + sec->output_offset
13801 + sec->output_section->vma);
13803 r_type = R_PPC64_TPREL16_LO;
13804 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13805 rel->r_offset = offset + d_offset;
13806 /* Zap the reloc on the _tls_get_addr call too. */
13807 BFD_ASSERT (offset == rel[1].r_offset);
13808 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13809 insn2 = 0x38630000; /* addi 3,3,0 */
13810 insn3 = bfd_get_32 (output_bfd,
13811 contents + offset + 4);
13813 || insn3 == CROR_151515 || insn3 == CROR_313131)
13815 rel->r_offset += 4;
13816 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13819 bfd_put_32 (output_bfd, insn2, contents + offset);
13824 case R_PPC64_DTPMOD64:
13825 if (rel + 1 < relend
13826 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13827 && rel[1].r_offset == rel->r_offset + 8)
13829 if ((tls_mask & TLS_GD) == 0)
13831 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13832 if ((tls_mask & TLS_TPRELGD) != 0)
13833 r_type = R_PPC64_TPREL64;
13836 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13837 r_type = R_PPC64_NONE;
13839 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13844 if ((tls_mask & TLS_LD) == 0)
13846 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13847 r_type = R_PPC64_NONE;
13848 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13853 case R_PPC64_TPREL64:
13854 if ((tls_mask & TLS_TPREL) == 0)
13856 r_type = R_PPC64_NONE;
13857 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13861 case R_PPC64_ENTRY:
13862 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13863 if (!bfd_link_pic (info)
13864 && !info->traditional_format
13865 && relocation + 0x80008000 <= 0xffffffff)
13867 unsigned int insn1, insn2;
13869 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13870 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13871 if ((insn1 & ~0xfffc) == LD_R2_0R12
13872 && insn2 == ADD_R2_R2_R12)
13874 bfd_put_32 (output_bfd,
13875 LIS_R2 + PPC_HA (relocation),
13876 contents + rel->r_offset);
13877 bfd_put_32 (output_bfd,
13878 ADDI_R2_R2 + PPC_LO (relocation),
13879 contents + rel->r_offset + 4);
13884 relocation -= (rel->r_offset
13885 + input_section->output_offset
13886 + input_section->output_section->vma);
13887 if (relocation + 0x80008000 <= 0xffffffff)
13889 unsigned int insn1, insn2;
13891 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13892 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13893 if ((insn1 & ~0xfffc) == LD_R2_0R12
13894 && insn2 == ADD_R2_R2_R12)
13896 bfd_put_32 (output_bfd,
13897 ADDIS_R2_R12 + PPC_HA (relocation),
13898 contents + rel->r_offset);
13899 bfd_put_32 (output_bfd,
13900 ADDI_R2_R2 + PPC_LO (relocation),
13901 contents + rel->r_offset + 4);
13907 case R_PPC64_REL16_HA:
13908 /* If we are generating a non-PIC executable, edit
13909 . 0: addis 2,12,.TOC.-0b@ha
13910 . addi 2,2,.TOC.-0b@l
13911 used by ELFv2 global entry points to set up r2, to
13914 if .TOC. is in range. */
13915 if (!bfd_link_pic (info)
13916 && !info->traditional_format
13918 && rel->r_addend == 0
13919 && h != NULL && &h->elf == htab->elf.hgot
13920 && rel + 1 < relend
13921 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13922 && rel[1].r_offset == rel->r_offset + 4
13923 && rel[1].r_addend == rel->r_addend + 4
13924 && relocation + 0x80008000 <= 0xffffffff)
13926 unsigned int insn1, insn2;
13927 bfd_vma offset = rel->r_offset - d_offset;
13928 insn1 = bfd_get_32 (output_bfd, contents + offset);
13929 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13930 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
13931 && (insn2 & 0xffff0000) == ADDI_R2_R2)
13933 r_type = R_PPC64_ADDR16_HA;
13934 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13935 rel->r_addend -= d_offset;
13936 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13937 rel[1].r_addend -= d_offset + 4;
13938 bfd_put_32 (output_bfd, LIS_R2, contents + offset);
13944 /* Handle other relocations that tweak non-addend part of insn. */
13946 max_br_offset = 1 << 25;
13947 addend = rel->r_addend;
13948 reloc_dest = DEST_NORMAL;
13954 case R_PPC64_TOCSAVE:
13955 if (relocation + addend == (rel->r_offset
13956 + input_section->output_offset
13957 + input_section->output_section->vma)
13958 && tocsave_find (htab, NO_INSERT,
13959 &local_syms, rel, input_bfd))
13961 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13963 || insn == CROR_151515 || insn == CROR_313131)
13964 bfd_put_32 (input_bfd,
13965 STD_R2_0R1 + STK_TOC (htab),
13966 contents + rel->r_offset);
13970 /* Branch taken prediction relocations. */
13971 case R_PPC64_ADDR14_BRTAKEN:
13972 case R_PPC64_REL14_BRTAKEN:
13973 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13976 /* Branch not taken prediction relocations. */
13977 case R_PPC64_ADDR14_BRNTAKEN:
13978 case R_PPC64_REL14_BRNTAKEN:
13979 insn |= bfd_get_32 (output_bfd,
13980 contents + rel->r_offset) & ~(0x01 << 21);
13983 case R_PPC64_REL14:
13984 max_br_offset = 1 << 15;
13987 case R_PPC64_REL24:
13988 /* Calls to functions with a different TOC, such as calls to
13989 shared objects, need to alter the TOC pointer. This is
13990 done using a linkage stub. A REL24 branching to these
13991 linkage stubs needs to be followed by a nop, as the nop
13992 will be replaced with an instruction to restore the TOC
13997 && h->oh->is_func_descriptor)
13998 fdh = ppc_follow_link (h->oh);
13999 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14001 if (stub_entry != NULL
14002 && (stub_entry->stub_type == ppc_stub_plt_call
14003 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14004 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14005 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14007 bfd_boolean can_plt_call = FALSE;
14009 /* All of these stubs will modify r2, so there must be a
14010 branch and link followed by a nop. The nop is
14011 replaced by an insn to restore r2. */
14012 if (rel->r_offset + 8 <= input_section->size)
14016 br = bfd_get_32 (input_bfd,
14017 contents + rel->r_offset);
14022 nop = bfd_get_32 (input_bfd,
14023 contents + rel->r_offset + 4);
14025 || nop == CROR_151515 || nop == CROR_313131)
14028 && (h == htab->tls_get_addr_fd
14029 || h == htab->tls_get_addr)
14030 && htab->params->tls_get_addr_opt)
14032 /* Special stub used, leave nop alone. */
14035 bfd_put_32 (input_bfd,
14036 LD_R2_0R1 + STK_TOC (htab),
14037 contents + rel->r_offset + 4);
14038 can_plt_call = TRUE;
14043 if (!can_plt_call && h != NULL)
14045 const char *name = h->elf.root.root.string;
14050 if (strncmp (name, "__libc_start_main", 17) == 0
14051 && (name[17] == 0 || name[17] == '@'))
14053 /* Allow crt1 branch to go via a toc adjusting
14054 stub. Other calls that never return could do
14055 the same, if we could detect such. */
14056 can_plt_call = TRUE;
14062 /* g++ as of 20130507 emits self-calls without a
14063 following nop. This is arguably wrong since we
14064 have conflicting information. On the one hand a
14065 global symbol and on the other a local call
14066 sequence, but don't error for this special case.
14067 It isn't possible to cheaply verify we have
14068 exactly such a call. Allow all calls to the same
14070 asection *code_sec = sec;
14072 if (get_opd_info (sec) != NULL)
14074 bfd_vma off = (relocation + addend
14075 - sec->output_section->vma
14076 - sec->output_offset);
14078 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14080 if (code_sec == input_section)
14081 can_plt_call = TRUE;
14086 if (stub_entry->stub_type == ppc_stub_plt_call
14087 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14088 info->callbacks->einfo
14089 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14090 "recompile with -fPIC\n"),
14091 input_bfd, input_section, rel->r_offset, sym_name);
14093 info->callbacks->einfo
14094 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14095 "(-mcmodel=small toc adjust stub)\n"),
14096 input_bfd, input_section, rel->r_offset, sym_name);
14098 bfd_set_error (bfd_error_bad_value);
14103 && (stub_entry->stub_type == ppc_stub_plt_call
14104 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14105 unresolved_reloc = FALSE;
14108 if ((stub_entry == NULL
14109 || stub_entry->stub_type == ppc_stub_long_branch
14110 || stub_entry->stub_type == ppc_stub_plt_branch)
14111 && get_opd_info (sec) != NULL)
14113 /* The branch destination is the value of the opd entry. */
14114 bfd_vma off = (relocation + addend
14115 - sec->output_section->vma
14116 - sec->output_offset);
14117 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14118 if (dest != (bfd_vma) -1)
14122 reloc_dest = DEST_OPD;
14126 /* If the branch is out of reach we ought to have a long
14128 from = (rel->r_offset
14129 + input_section->output_offset
14130 + input_section->output_section->vma);
14132 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14136 if (stub_entry != NULL
14137 && (stub_entry->stub_type == ppc_stub_long_branch
14138 || stub_entry->stub_type == ppc_stub_plt_branch)
14139 && (r_type == R_PPC64_ADDR14_BRTAKEN
14140 || r_type == R_PPC64_ADDR14_BRNTAKEN
14141 || (relocation + addend - from + max_br_offset
14142 < 2 * max_br_offset)))
14143 /* Don't use the stub if this branch is in range. */
14146 if (stub_entry != NULL)
14148 /* Munge up the value and addend so that we call the stub
14149 rather than the procedure directly. */
14150 asection *stub_sec = stub_entry->group->stub_sec;
14152 if (stub_entry->stub_type == ppc_stub_save_res)
14153 relocation += (stub_sec->output_offset
14154 + stub_sec->output_section->vma
14155 + stub_sec->size - htab->sfpr->size
14156 - htab->sfpr->output_offset
14157 - htab->sfpr->output_section->vma);
14159 relocation = (stub_entry->stub_offset
14160 + stub_sec->output_offset
14161 + stub_sec->output_section->vma);
14163 reloc_dest = DEST_STUB;
14165 if ((stub_entry->stub_type == ppc_stub_plt_call
14166 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14167 && (ALWAYS_EMIT_R2SAVE
14168 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14169 && rel + 1 < relend
14170 && rel[1].r_offset == rel->r_offset + 4
14171 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14179 /* Set 'a' bit. This is 0b00010 in BO field for branch
14180 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14181 for branch on CTR insns (BO == 1a00t or 1a01t). */
14182 if ((insn & (0x14 << 21)) == (0x04 << 21))
14183 insn |= 0x02 << 21;
14184 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14185 insn |= 0x08 << 21;
14191 /* Invert 'y' bit if not the default. */
14192 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14193 insn ^= 0x01 << 21;
14196 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
14199 /* NOP out calls to undefined weak functions.
14200 We can thus call a weak function without first
14201 checking whether the function is defined. */
14203 && h->elf.root.type == bfd_link_hash_undefweak
14204 && h->elf.dynindx == -1
14205 && r_type == R_PPC64_REL24
14209 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
14215 /* Set `addend'. */
14220 info->callbacks->einfo
14221 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14222 input_bfd, (int) r_type, sym_name);
14224 bfd_set_error (bfd_error_bad_value);
14230 case R_PPC64_TLSGD:
14231 case R_PPC64_TLSLD:
14232 case R_PPC64_TOCSAVE:
14233 case R_PPC64_GNU_VTINHERIT:
14234 case R_PPC64_GNU_VTENTRY:
14235 case R_PPC64_ENTRY:
14238 /* GOT16 relocations. Like an ADDR16 using the symbol's
14239 address in the GOT as relocation value instead of the
14240 symbol's value itself. Also, create a GOT entry for the
14241 symbol and put the symbol value there. */
14242 case R_PPC64_GOT_TLSGD16:
14243 case R_PPC64_GOT_TLSGD16_LO:
14244 case R_PPC64_GOT_TLSGD16_HI:
14245 case R_PPC64_GOT_TLSGD16_HA:
14246 tls_type = TLS_TLS | TLS_GD;
14249 case R_PPC64_GOT_TLSLD16:
14250 case R_PPC64_GOT_TLSLD16_LO:
14251 case R_PPC64_GOT_TLSLD16_HI:
14252 case R_PPC64_GOT_TLSLD16_HA:
14253 tls_type = TLS_TLS | TLS_LD;
14256 case R_PPC64_GOT_TPREL16_DS:
14257 case R_PPC64_GOT_TPREL16_LO_DS:
14258 case R_PPC64_GOT_TPREL16_HI:
14259 case R_PPC64_GOT_TPREL16_HA:
14260 tls_type = TLS_TLS | TLS_TPREL;
14263 case R_PPC64_GOT_DTPREL16_DS:
14264 case R_PPC64_GOT_DTPREL16_LO_DS:
14265 case R_PPC64_GOT_DTPREL16_HI:
14266 case R_PPC64_GOT_DTPREL16_HA:
14267 tls_type = TLS_TLS | TLS_DTPREL;
14270 case R_PPC64_GOT16:
14271 case R_PPC64_GOT16_LO:
14272 case R_PPC64_GOT16_HI:
14273 case R_PPC64_GOT16_HA:
14274 case R_PPC64_GOT16_DS:
14275 case R_PPC64_GOT16_LO_DS:
14278 /* Relocation is to the entry for this symbol in the global
14283 unsigned long indx = 0;
14284 struct got_entry *ent;
14286 if (tls_type == (TLS_TLS | TLS_LD)
14288 || !h->elf.def_dynamic))
14289 ent = ppc64_tlsld_got (input_bfd);
14295 bfd_boolean dyn = htab->elf.dynamic_sections_created;
14296 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info),
14298 || (bfd_link_pic (info)
14299 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
14300 /* This is actually a static link, or it is a
14301 -Bsymbolic link and the symbol is defined
14302 locally, or the symbol was forced to be local
14303 because of a version file. */
14307 BFD_ASSERT (h->elf.dynindx != -1);
14308 indx = h->elf.dynindx;
14309 unresolved_reloc = FALSE;
14311 ent = h->elf.got.glist;
14315 if (local_got_ents == NULL)
14317 ent = local_got_ents[r_symndx];
14320 for (; ent != NULL; ent = ent->next)
14321 if (ent->addend == orig_rel.r_addend
14322 && ent->owner == input_bfd
14323 && ent->tls_type == tls_type)
14329 if (ent->is_indirect)
14330 ent = ent->got.ent;
14331 offp = &ent->got.offset;
14332 got = ppc64_elf_tdata (ent->owner)->got;
14336 /* The offset must always be a multiple of 8. We use the
14337 least significant bit to record whether we have already
14338 processed this entry. */
14340 if ((off & 1) != 0)
14344 /* Generate relocs for the dynamic linker, except in
14345 the case of TLSLD where we'll use one entry per
14353 ? h->elf.type == STT_GNU_IFUNC
14354 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14356 relgot = htab->elf.irelplt;
14357 else if ((bfd_link_pic (info) || indx != 0)
14359 || (tls_type == (TLS_TLS | TLS_LD)
14360 && !h->elf.def_dynamic)
14361 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14362 || h->elf.root.type != bfd_link_hash_undefweak))
14363 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14364 if (relgot != NULL)
14366 outrel.r_offset = (got->output_section->vma
14367 + got->output_offset
14369 outrel.r_addend = addend;
14370 if (tls_type & (TLS_LD | TLS_GD))
14372 outrel.r_addend = 0;
14373 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14374 if (tls_type == (TLS_TLS | TLS_GD))
14376 loc = relgot->contents;
14377 loc += (relgot->reloc_count++
14378 * sizeof (Elf64_External_Rela));
14379 bfd_elf64_swap_reloca_out (output_bfd,
14381 outrel.r_offset += 8;
14382 outrel.r_addend = addend;
14384 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14387 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14388 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14389 else if (tls_type == (TLS_TLS | TLS_TPREL))
14390 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14391 else if (indx != 0)
14392 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14396 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14398 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14400 /* Write the .got section contents for the sake
14402 loc = got->contents + off;
14403 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14407 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14409 outrel.r_addend += relocation;
14410 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14412 if (htab->elf.tls_sec == NULL)
14413 outrel.r_addend = 0;
14415 outrel.r_addend -= htab->elf.tls_sec->vma;
14418 loc = relgot->contents;
14419 loc += (relgot->reloc_count++
14420 * sizeof (Elf64_External_Rela));
14421 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14424 /* Init the .got section contents here if we're not
14425 emitting a reloc. */
14428 relocation += addend;
14429 if (tls_type == (TLS_TLS | TLS_LD))
14431 else if (tls_type != 0)
14433 if (htab->elf.tls_sec == NULL)
14437 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14438 if (tls_type == (TLS_TLS | TLS_TPREL))
14439 relocation += DTP_OFFSET - TP_OFFSET;
14442 if (tls_type == (TLS_TLS | TLS_GD))
14444 bfd_put_64 (output_bfd, relocation,
14445 got->contents + off + 8);
14450 bfd_put_64 (output_bfd, relocation,
14451 got->contents + off);
14455 if (off >= (bfd_vma) -2)
14458 relocation = got->output_section->vma + got->output_offset + off;
14459 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14463 case R_PPC64_PLT16_HA:
14464 case R_PPC64_PLT16_HI:
14465 case R_PPC64_PLT16_LO:
14466 case R_PPC64_PLT32:
14467 case R_PPC64_PLT64:
14468 /* Relocation is to the entry for this symbol in the
14469 procedure linkage table. */
14471 struct plt_entry **plt_list = NULL;
14473 plt_list = &h->elf.plt.plist;
14474 else if (local_got_ents != NULL)
14476 struct plt_entry **local_plt = (struct plt_entry **)
14477 (local_got_ents + symtab_hdr->sh_info);
14478 unsigned char *local_got_tls_masks = (unsigned char *)
14479 (local_plt + symtab_hdr->sh_info);
14480 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14481 plt_list = local_plt + r_symndx;
14485 struct plt_entry *ent;
14487 for (ent = *plt_list; ent != NULL; ent = ent->next)
14488 if (ent->plt.offset != (bfd_vma) -1
14489 && ent->addend == orig_rel.r_addend)
14493 plt = htab->elf.splt;
14494 if (!htab->elf.dynamic_sections_created
14496 || h->elf.dynindx == -1)
14497 plt = htab->elf.iplt;
14498 relocation = (plt->output_section->vma
14499 + plt->output_offset
14500 + ent->plt.offset);
14502 unresolved_reloc = FALSE;
14510 /* Relocation value is TOC base. */
14511 relocation = TOCstart;
14512 if (r_symndx == STN_UNDEF)
14513 relocation += htab->sec_info[input_section->id].toc_off;
14514 else if (unresolved_reloc)
14516 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14517 relocation += htab->sec_info[sec->id].toc_off;
14519 unresolved_reloc = TRUE;
14522 /* TOC16 relocs. We want the offset relative to the TOC base,
14523 which is the address of the start of the TOC plus 0x8000.
14524 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14526 case R_PPC64_TOC16:
14527 case R_PPC64_TOC16_LO:
14528 case R_PPC64_TOC16_HI:
14529 case R_PPC64_TOC16_DS:
14530 case R_PPC64_TOC16_LO_DS:
14531 case R_PPC64_TOC16_HA:
14532 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14535 /* Relocate against the beginning of the section. */
14536 case R_PPC64_SECTOFF:
14537 case R_PPC64_SECTOFF_LO:
14538 case R_PPC64_SECTOFF_HI:
14539 case R_PPC64_SECTOFF_DS:
14540 case R_PPC64_SECTOFF_LO_DS:
14541 case R_PPC64_SECTOFF_HA:
14543 addend -= sec->output_section->vma;
14546 case R_PPC64_REL16:
14547 case R_PPC64_REL16_LO:
14548 case R_PPC64_REL16_HI:
14549 case R_PPC64_REL16_HA:
14550 case R_PPC64_REL16DX_HA:
14553 case R_PPC64_REL14:
14554 case R_PPC64_REL14_BRNTAKEN:
14555 case R_PPC64_REL14_BRTAKEN:
14556 case R_PPC64_REL24:
14559 case R_PPC64_TPREL16:
14560 case R_PPC64_TPREL16_LO:
14561 case R_PPC64_TPREL16_HI:
14562 case R_PPC64_TPREL16_HA:
14563 case R_PPC64_TPREL16_DS:
14564 case R_PPC64_TPREL16_LO_DS:
14565 case R_PPC64_TPREL16_HIGH:
14566 case R_PPC64_TPREL16_HIGHA:
14567 case R_PPC64_TPREL16_HIGHER:
14568 case R_PPC64_TPREL16_HIGHERA:
14569 case R_PPC64_TPREL16_HIGHEST:
14570 case R_PPC64_TPREL16_HIGHESTA:
14572 && h->elf.root.type == bfd_link_hash_undefweak
14573 && h->elf.dynindx == -1)
14575 /* Make this relocation against an undefined weak symbol
14576 resolve to zero. This is really just a tweak, since
14577 code using weak externs ought to check that they are
14578 defined before using them. */
14579 bfd_byte *p = contents + rel->r_offset - d_offset;
14581 insn = bfd_get_32 (output_bfd, p);
14582 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14584 bfd_put_32 (output_bfd, insn, p);
14587 if (htab->elf.tls_sec != NULL)
14588 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14589 if (bfd_link_pic (info))
14590 /* The TPREL16 relocs shouldn't really be used in shared
14591 libs as they will result in DT_TEXTREL being set, but
14592 support them anyway. */
14596 case R_PPC64_DTPREL16:
14597 case R_PPC64_DTPREL16_LO:
14598 case R_PPC64_DTPREL16_HI:
14599 case R_PPC64_DTPREL16_HA:
14600 case R_PPC64_DTPREL16_DS:
14601 case R_PPC64_DTPREL16_LO_DS:
14602 case R_PPC64_DTPREL16_HIGH:
14603 case R_PPC64_DTPREL16_HIGHA:
14604 case R_PPC64_DTPREL16_HIGHER:
14605 case R_PPC64_DTPREL16_HIGHERA:
14606 case R_PPC64_DTPREL16_HIGHEST:
14607 case R_PPC64_DTPREL16_HIGHESTA:
14608 if (htab->elf.tls_sec != NULL)
14609 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14612 case R_PPC64_ADDR64_LOCAL:
14613 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14618 case R_PPC64_DTPMOD64:
14623 case R_PPC64_TPREL64:
14624 if (htab->elf.tls_sec != NULL)
14625 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14628 case R_PPC64_DTPREL64:
14629 if (htab->elf.tls_sec != NULL)
14630 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14633 /* Relocations that may need to be propagated if this is a
14635 case R_PPC64_REL30:
14636 case R_PPC64_REL32:
14637 case R_PPC64_REL64:
14638 case R_PPC64_ADDR14:
14639 case R_PPC64_ADDR14_BRNTAKEN:
14640 case R_PPC64_ADDR14_BRTAKEN:
14641 case R_PPC64_ADDR16:
14642 case R_PPC64_ADDR16_DS:
14643 case R_PPC64_ADDR16_HA:
14644 case R_PPC64_ADDR16_HI:
14645 case R_PPC64_ADDR16_HIGH:
14646 case R_PPC64_ADDR16_HIGHA:
14647 case R_PPC64_ADDR16_HIGHER:
14648 case R_PPC64_ADDR16_HIGHERA:
14649 case R_PPC64_ADDR16_HIGHEST:
14650 case R_PPC64_ADDR16_HIGHESTA:
14651 case R_PPC64_ADDR16_LO:
14652 case R_PPC64_ADDR16_LO_DS:
14653 case R_PPC64_ADDR24:
14654 case R_PPC64_ADDR32:
14655 case R_PPC64_ADDR64:
14656 case R_PPC64_UADDR16:
14657 case R_PPC64_UADDR32:
14658 case R_PPC64_UADDR64:
14660 if ((input_section->flags & SEC_ALLOC) == 0)
14663 if (NO_OPD_RELOCS && is_opd)
14666 if ((bfd_link_pic (info)
14668 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14669 || h->elf.root.type != bfd_link_hash_undefweak)
14670 && (must_be_dyn_reloc (info, r_type)
14671 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14672 || (ELIMINATE_COPY_RELOCS
14673 && !bfd_link_pic (info)
14675 && h->elf.dynindx != -1
14676 && !h->elf.non_got_ref
14677 && !h->elf.def_regular)
14678 || (!bfd_link_pic (info)
14680 ? h->elf.type == STT_GNU_IFUNC
14681 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14683 bfd_boolean skip, relocate;
14687 /* When generating a dynamic object, these relocations
14688 are copied into the output file to be resolved at run
14694 out_off = _bfd_elf_section_offset (output_bfd, info,
14695 input_section, rel->r_offset);
14696 if (out_off == (bfd_vma) -1)
14698 else if (out_off == (bfd_vma) -2)
14699 skip = TRUE, relocate = TRUE;
14700 out_off += (input_section->output_section->vma
14701 + input_section->output_offset);
14702 outrel.r_offset = out_off;
14703 outrel.r_addend = rel->r_addend;
14705 /* Optimize unaligned reloc use. */
14706 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14707 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14708 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14709 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14710 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14711 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14712 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14713 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14714 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14717 memset (&outrel, 0, sizeof outrel);
14718 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14720 && r_type != R_PPC64_TOC)
14722 BFD_ASSERT (h->elf.dynindx != -1);
14723 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14727 /* This symbol is local, or marked to become local,
14728 or this is an opd section reloc which must point
14729 at a local function. */
14730 outrel.r_addend += relocation;
14731 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14733 if (is_opd && h != NULL)
14735 /* Lie about opd entries. This case occurs
14736 when building shared libraries and we
14737 reference a function in another shared
14738 lib. The same thing happens for a weak
14739 definition in an application that's
14740 overridden by a strong definition in a
14741 shared lib. (I believe this is a generic
14742 bug in binutils handling of weak syms.)
14743 In these cases we won't use the opd
14744 entry in this lib. */
14745 unresolved_reloc = FALSE;
14748 && r_type == R_PPC64_ADDR64
14750 ? h->elf.type == STT_GNU_IFUNC
14751 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14752 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14755 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14757 /* We need to relocate .opd contents for ld.so.
14758 Prelink also wants simple and consistent rules
14759 for relocs. This make all RELATIVE relocs have
14760 *r_offset equal to r_addend. */
14769 ? h->elf.type == STT_GNU_IFUNC
14770 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14772 info->callbacks->einfo
14773 (_("%P: %H: %s for indirect "
14774 "function `%T' unsupported\n"),
14775 input_bfd, input_section, rel->r_offset,
14776 ppc64_elf_howto_table[r_type]->name,
14780 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14782 else if (sec == NULL || sec->owner == NULL)
14784 bfd_set_error (bfd_error_bad_value);
14791 osec = sec->output_section;
14792 indx = elf_section_data (osec)->dynindx;
14796 if ((osec->flags & SEC_READONLY) == 0
14797 && htab->elf.data_index_section != NULL)
14798 osec = htab->elf.data_index_section;
14800 osec = htab->elf.text_index_section;
14801 indx = elf_section_data (osec)->dynindx;
14803 BFD_ASSERT (indx != 0);
14805 /* We are turning this relocation into one
14806 against a section symbol, so subtract out
14807 the output section's address but not the
14808 offset of the input section in the output
14810 outrel.r_addend -= osec->vma;
14813 outrel.r_info = ELF64_R_INFO (indx, r_type);
14817 sreloc = elf_section_data (input_section)->sreloc;
14819 ? h->elf.type == STT_GNU_IFUNC
14820 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14821 sreloc = htab->elf.irelplt;
14822 if (sreloc == NULL)
14825 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14828 loc = sreloc->contents;
14829 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14830 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14832 /* If this reloc is against an external symbol, it will
14833 be computed at runtime, so there's no need to do
14834 anything now. However, for the sake of prelink ensure
14835 that the section contents are a known value. */
14838 unresolved_reloc = FALSE;
14839 /* The value chosen here is quite arbitrary as ld.so
14840 ignores section contents except for the special
14841 case of .opd where the contents might be accessed
14842 before relocation. Choose zero, as that won't
14843 cause reloc overflow. */
14846 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14847 to improve backward compatibility with older
14849 if (r_type == R_PPC64_ADDR64)
14850 addend = outrel.r_addend;
14851 /* Adjust pc_relative relocs to have zero in *r_offset. */
14852 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14853 addend = (input_section->output_section->vma
14854 + input_section->output_offset
14861 case R_PPC64_GLOB_DAT:
14862 case R_PPC64_JMP_SLOT:
14863 case R_PPC64_JMP_IREL:
14864 case R_PPC64_RELATIVE:
14865 /* We shouldn't ever see these dynamic relocs in relocatable
14867 /* Fall through. */
14869 case R_PPC64_PLTGOT16:
14870 case R_PPC64_PLTGOT16_DS:
14871 case R_PPC64_PLTGOT16_HA:
14872 case R_PPC64_PLTGOT16_HI:
14873 case R_PPC64_PLTGOT16_LO:
14874 case R_PPC64_PLTGOT16_LO_DS:
14875 case R_PPC64_PLTREL32:
14876 case R_PPC64_PLTREL64:
14877 /* These ones haven't been implemented yet. */
14879 info->callbacks->einfo
14880 (_("%P: %B: %s is not supported for `%T'\n"),
14882 ppc64_elf_howto_table[r_type]->name, sym_name);
14884 bfd_set_error (bfd_error_invalid_operation);
14889 /* Multi-instruction sequences that access the TOC can be
14890 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14891 to nop; addi rb,r2,x; */
14897 case R_PPC64_GOT_TLSLD16_HI:
14898 case R_PPC64_GOT_TLSGD16_HI:
14899 case R_PPC64_GOT_TPREL16_HI:
14900 case R_PPC64_GOT_DTPREL16_HI:
14901 case R_PPC64_GOT16_HI:
14902 case R_PPC64_TOC16_HI:
14903 /* These relocs would only be useful if building up an
14904 offset to later add to r2, perhaps in an indexed
14905 addressing mode instruction. Don't try to optimize.
14906 Unfortunately, the possibility of someone building up an
14907 offset like this or even with the HA relocs, means that
14908 we need to check the high insn when optimizing the low
14912 case R_PPC64_GOT_TLSLD16_HA:
14913 case R_PPC64_GOT_TLSGD16_HA:
14914 case R_PPC64_GOT_TPREL16_HA:
14915 case R_PPC64_GOT_DTPREL16_HA:
14916 case R_PPC64_GOT16_HA:
14917 case R_PPC64_TOC16_HA:
14918 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14919 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14921 bfd_byte *p = contents + (rel->r_offset & ~3);
14922 bfd_put_32 (input_bfd, NOP, p);
14926 case R_PPC64_GOT_TLSLD16_LO:
14927 case R_PPC64_GOT_TLSGD16_LO:
14928 case R_PPC64_GOT_TPREL16_LO_DS:
14929 case R_PPC64_GOT_DTPREL16_LO_DS:
14930 case R_PPC64_GOT16_LO:
14931 case R_PPC64_GOT16_LO_DS:
14932 case R_PPC64_TOC16_LO:
14933 case R_PPC64_TOC16_LO_DS:
14934 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14935 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14937 bfd_byte *p = contents + (rel->r_offset & ~3);
14938 insn = bfd_get_32 (input_bfd, p);
14939 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14941 /* Transform addic to addi when we change reg. */
14942 insn &= ~((0x3f << 26) | (0x1f << 16));
14943 insn |= (14u << 26) | (2 << 16);
14947 insn &= ~(0x1f << 16);
14950 bfd_put_32 (input_bfd, insn, p);
14955 /* Do any further special processing. */
14956 howto = ppc64_elf_howto_table[(int) r_type];
14962 case R_PPC64_REL16_HA:
14963 case R_PPC64_REL16DX_HA:
14964 case R_PPC64_ADDR16_HA:
14965 case R_PPC64_ADDR16_HIGHA:
14966 case R_PPC64_ADDR16_HIGHERA:
14967 case R_PPC64_ADDR16_HIGHESTA:
14968 case R_PPC64_TOC16_HA:
14969 case R_PPC64_SECTOFF_HA:
14970 case R_PPC64_TPREL16_HA:
14971 case R_PPC64_TPREL16_HIGHA:
14972 case R_PPC64_TPREL16_HIGHERA:
14973 case R_PPC64_TPREL16_HIGHESTA:
14974 case R_PPC64_DTPREL16_HA:
14975 case R_PPC64_DTPREL16_HIGHA:
14976 case R_PPC64_DTPREL16_HIGHERA:
14977 case R_PPC64_DTPREL16_HIGHESTA:
14978 /* It's just possible that this symbol is a weak symbol
14979 that's not actually defined anywhere. In that case,
14980 'sec' would be NULL, and we should leave the symbol
14981 alone (it will be set to zero elsewhere in the link). */
14986 case R_PPC64_GOT16_HA:
14987 case R_PPC64_PLTGOT16_HA:
14988 case R_PPC64_PLT16_HA:
14989 case R_PPC64_GOT_TLSGD16_HA:
14990 case R_PPC64_GOT_TLSLD16_HA:
14991 case R_PPC64_GOT_TPREL16_HA:
14992 case R_PPC64_GOT_DTPREL16_HA:
14993 /* Add 0x10000 if sign bit in 0:15 is set.
14994 Bits 0:15 are not used. */
14998 case R_PPC64_ADDR16_DS:
14999 case R_PPC64_ADDR16_LO_DS:
15000 case R_PPC64_GOT16_DS:
15001 case R_PPC64_GOT16_LO_DS:
15002 case R_PPC64_PLT16_LO_DS:
15003 case R_PPC64_SECTOFF_DS:
15004 case R_PPC64_SECTOFF_LO_DS:
15005 case R_PPC64_TOC16_DS:
15006 case R_PPC64_TOC16_LO_DS:
15007 case R_PPC64_PLTGOT16_DS:
15008 case R_PPC64_PLTGOT16_LO_DS:
15009 case R_PPC64_GOT_TPREL16_DS:
15010 case R_PPC64_GOT_TPREL16_LO_DS:
15011 case R_PPC64_GOT_DTPREL16_DS:
15012 case R_PPC64_GOT_DTPREL16_LO_DS:
15013 case R_PPC64_TPREL16_DS:
15014 case R_PPC64_TPREL16_LO_DS:
15015 case R_PPC64_DTPREL16_DS:
15016 case R_PPC64_DTPREL16_LO_DS:
15017 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15019 /* If this reloc is against an lq, lxv, or stxv insn, then
15020 the value must be a multiple of 16. This is somewhat of
15021 a hack, but the "correct" way to do this by defining _DQ
15022 forms of all the _DS relocs bloats all reloc switches in
15023 this file. It doesn't make much sense to use these
15024 relocs in data, so testing the insn should be safe. */
15025 if ((insn & (0x3f << 26)) == (56u << 26)
15026 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15028 relocation += addend;
15029 addend = insn & (mask ^ 3);
15030 if ((relocation & mask) != 0)
15032 relocation ^= relocation & mask;
15033 info->callbacks->einfo
15034 (_("%P: %H: error: %s not a multiple of %u\n"),
15035 input_bfd, input_section, rel->r_offset,
15038 bfd_set_error (bfd_error_bad_value);
15045 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15046 because such sections are not SEC_ALLOC and thus ld.so will
15047 not process them. */
15048 if (unresolved_reloc
15049 && !((input_section->flags & SEC_DEBUGGING) != 0
15050 && h->elf.def_dynamic)
15051 && _bfd_elf_section_offset (output_bfd, info, input_section,
15052 rel->r_offset) != (bfd_vma) -1)
15054 info->callbacks->einfo
15055 (_("%P: %H: unresolvable %s against `%T'\n"),
15056 input_bfd, input_section, rel->r_offset,
15058 h->elf.root.root.string);
15062 /* 16-bit fields in insns mostly have signed values, but a
15063 few insns have 16-bit unsigned values. Really, we should
15064 have different reloc types. */
15065 if (howto->complain_on_overflow != complain_overflow_dont
15066 && howto->dst_mask == 0xffff
15067 && (input_section->flags & SEC_CODE) != 0)
15069 enum complain_overflow complain = complain_overflow_signed;
15071 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15072 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15073 complain = complain_overflow_bitfield;
15074 else if (howto->rightshift == 0
15075 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15076 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15077 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15078 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15079 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15080 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15081 complain = complain_overflow_unsigned;
15082 if (howto->complain_on_overflow != complain)
15084 alt_howto = *howto;
15085 alt_howto.complain_on_overflow = complain;
15086 howto = &alt_howto;
15090 if (r_type == R_PPC64_REL16DX_HA)
15092 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15093 if (rel->r_offset + 4 > input_section->size)
15094 r = bfd_reloc_outofrange;
15097 relocation += addend;
15098 relocation -= (rel->r_offset
15099 + input_section->output_offset
15100 + input_section->output_section->vma);
15101 relocation = (bfd_signed_vma) relocation >> 16;
15102 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15104 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15105 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15107 if (relocation + 0x8000 > 0xffff)
15108 r = bfd_reloc_overflow;
15112 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15113 rel->r_offset, relocation, addend);
15115 if (r != bfd_reloc_ok)
15117 char *more_info = NULL;
15118 const char *reloc_name = howto->name;
15120 if (reloc_dest != DEST_NORMAL)
15122 more_info = bfd_malloc (strlen (reloc_name) + 8);
15123 if (more_info != NULL)
15125 strcpy (more_info, reloc_name);
15126 strcat (more_info, (reloc_dest == DEST_OPD
15127 ? " (OPD)" : " (stub)"));
15128 reloc_name = more_info;
15132 if (r == bfd_reloc_overflow)
15134 /* On code like "if (foo) foo();" don't report overflow
15135 on a branch to zero when foo is undefined. */
15137 && (reloc_dest == DEST_STUB
15139 && (h->elf.root.type == bfd_link_hash_undefweak
15140 || h->elf.root.type == bfd_link_hash_undefined)
15141 && is_branch_reloc (r_type))))
15143 if (!((*info->callbacks->reloc_overflow)
15144 (info, &h->elf.root, sym_name,
15145 reloc_name, orig_rel.r_addend,
15146 input_bfd, input_section, rel->r_offset)))
15152 info->callbacks->einfo
15153 (_("%P: %H: %s against `%T': error %d\n"),
15154 input_bfd, input_section, rel->r_offset,
15155 reloc_name, sym_name, (int) r);
15158 if (more_info != NULL)
15168 Elf_Internal_Shdr *rel_hdr;
15169 size_t deleted = rel - wrel;
15171 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15172 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15173 if (rel_hdr->sh_size == 0)
15175 /* It is too late to remove an empty reloc section. Leave
15177 ??? What is wrong with an empty section??? */
15178 rel_hdr->sh_size = rel_hdr->sh_entsize;
15181 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15182 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15183 input_section->reloc_count -= deleted;
15186 /* If we're emitting relocations, then shortly after this function
15187 returns, reloc offsets and addends for this section will be
15188 adjusted. Worse, reloc symbol indices will be for the output
15189 file rather than the input. Save a copy of the relocs for
15190 opd_entry_value. */
15191 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15194 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15195 rel = bfd_alloc (input_bfd, amt);
15196 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15197 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15200 memcpy (rel, relocs, amt);
15205 /* Adjust the value of any local symbols in opd sections. */
15208 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15209 const char *name ATTRIBUTE_UNUSED,
15210 Elf_Internal_Sym *elfsym,
15211 asection *input_sec,
15212 struct elf_link_hash_entry *h)
15214 struct _opd_sec_data *opd;
15221 opd = get_opd_info (input_sec);
15222 if (opd == NULL || opd->adjust == NULL)
15225 value = elfsym->st_value - input_sec->output_offset;
15226 if (!bfd_link_relocatable (info))
15227 value -= input_sec->output_section->vma;
15229 adjust = opd->adjust[OPD_NDX (value)];
15233 elfsym->st_value += adjust;
15237 /* Finish up dynamic symbol handling. We set the contents of various
15238 dynamic sections here. */
15241 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15242 struct bfd_link_info *info,
15243 struct elf_link_hash_entry *h,
15244 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
15246 struct ppc_link_hash_table *htab;
15247 struct plt_entry *ent;
15248 Elf_Internal_Rela rela;
15251 htab = ppc_hash_table (info);
15255 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15256 if (ent->plt.offset != (bfd_vma) -1)
15258 /* This symbol has an entry in the procedure linkage
15259 table. Set it up. */
15260 if (!htab->elf.dynamic_sections_created
15261 || h->dynindx == -1)
15263 BFD_ASSERT (h->type == STT_GNU_IFUNC
15265 && (h->root.type == bfd_link_hash_defined
15266 || h->root.type == bfd_link_hash_defweak));
15267 rela.r_offset = (htab->elf.iplt->output_section->vma
15268 + htab->elf.iplt->output_offset
15269 + ent->plt.offset);
15271 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15273 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15274 rela.r_addend = (h->root.u.def.value
15275 + h->root.u.def.section->output_offset
15276 + h->root.u.def.section->output_section->vma
15278 loc = (htab->elf.irelplt->contents
15279 + (htab->elf.irelplt->reloc_count++
15280 * sizeof (Elf64_External_Rela)));
15284 rela.r_offset = (htab->elf.splt->output_section->vma
15285 + htab->elf.splt->output_offset
15286 + ent->plt.offset);
15287 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15288 rela.r_addend = ent->addend;
15289 loc = (htab->elf.srelplt->contents
15290 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15291 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15293 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15295 if (!htab->opd_abi)
15297 if (!h->def_regular)
15299 /* Mark the symbol as undefined, rather than as
15300 defined in glink. Leave the value if there were
15301 any relocations where pointer equality matters
15302 (this is a clue for the dynamic linker, to make
15303 function pointer comparisons work between an
15304 application and shared library), otherwise set it
15306 sym->st_shndx = SHN_UNDEF;
15307 if (!h->pointer_equality_needed)
15309 else if (!h->ref_regular_nonweak)
15311 /* This breaks function pointer comparisons, but
15312 that is better than breaking tests for a NULL
15313 function pointer. */
15322 /* This symbol needs a copy reloc. Set it up. */
15324 if (h->dynindx == -1
15325 || (h->root.type != bfd_link_hash_defined
15326 && h->root.type != bfd_link_hash_defweak)
15327 || htab->relbss == NULL)
15330 rela.r_offset = (h->root.u.def.value
15331 + h->root.u.def.section->output_section->vma
15332 + h->root.u.def.section->output_offset);
15333 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15335 loc = htab->relbss->contents;
15336 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
15337 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15343 /* Used to decide how to sort relocs in an optimal manner for the
15344 dynamic linker, before writing them out. */
15346 static enum elf_reloc_type_class
15347 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15348 const asection *rel_sec,
15349 const Elf_Internal_Rela *rela)
15351 enum elf_ppc64_reloc_type r_type;
15352 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15354 if (rel_sec == htab->elf.irelplt)
15355 return reloc_class_ifunc;
15357 r_type = ELF64_R_TYPE (rela->r_info);
15360 case R_PPC64_RELATIVE:
15361 return reloc_class_relative;
15362 case R_PPC64_JMP_SLOT:
15363 return reloc_class_plt;
15365 return reloc_class_copy;
15367 return reloc_class_normal;
15371 /* Finish up the dynamic sections. */
15374 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15375 struct bfd_link_info *info)
15377 struct ppc_link_hash_table *htab;
15381 htab = ppc_hash_table (info);
15385 dynobj = htab->elf.dynobj;
15386 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15388 if (htab->elf.dynamic_sections_created)
15390 Elf64_External_Dyn *dyncon, *dynconend;
15392 if (sdyn == NULL || htab->elf.sgot == NULL)
15395 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15396 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15397 for (; dyncon < dynconend; dyncon++)
15399 Elf_Internal_Dyn dyn;
15402 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15409 case DT_PPC64_GLINK:
15411 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15412 /* We stupidly defined DT_PPC64_GLINK to be the start
15413 of glink rather than the first entry point, which is
15414 what ld.so needs, and now have a bigger stub to
15415 support automatic multiple TOCs. */
15416 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15420 s = bfd_get_section_by_name (output_bfd, ".opd");
15423 dyn.d_un.d_ptr = s->vma;
15427 if (htab->do_multi_toc && htab->multi_toc_needed)
15428 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15431 case DT_PPC64_OPDSZ:
15432 s = bfd_get_section_by_name (output_bfd, ".opd");
15435 dyn.d_un.d_val = s->size;
15439 s = htab->elf.splt;
15440 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15444 s = htab->elf.srelplt;
15445 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15449 dyn.d_un.d_val = htab->elf.srelplt->size;
15453 /* Don't count procedure linkage table relocs in the
15454 overall reloc count. */
15455 s = htab->elf.srelplt;
15458 dyn.d_un.d_val -= s->size;
15462 /* We may not be using the standard ELF linker script.
15463 If .rela.plt is the first .rela section, we adjust
15464 DT_RELA to not include it. */
15465 s = htab->elf.srelplt;
15468 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15470 dyn.d_un.d_ptr += s->size;
15474 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15478 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15480 /* Fill in the first entry in the global offset table.
15481 We use it to hold the link-time TOCbase. */
15482 bfd_put_64 (output_bfd,
15483 elf_gp (output_bfd) + TOC_BASE_OFF,
15484 htab->elf.sgot->contents);
15486 /* Set .got entry size. */
15487 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15490 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15492 /* Set .plt entry size. */
15493 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15494 = PLT_ENTRY_SIZE (htab);
15497 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15498 brlt ourselves if emitrelocations. */
15499 if (htab->brlt != NULL
15500 && htab->brlt->reloc_count != 0
15501 && !_bfd_elf_link_output_relocs (output_bfd,
15503 elf_section_data (htab->brlt)->rela.hdr,
15504 elf_section_data (htab->brlt)->relocs,
15508 if (htab->glink != NULL
15509 && htab->glink->reloc_count != 0
15510 && !_bfd_elf_link_output_relocs (output_bfd,
15512 elf_section_data (htab->glink)->rela.hdr,
15513 elf_section_data (htab->glink)->relocs,
15517 if (htab->glink_eh_frame != NULL
15518 && htab->glink_eh_frame->size != 0)
15522 asection *stub_sec;
15524 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15525 for (stub_sec = htab->params->stub_bfd->sections;
15527 stub_sec = stub_sec->next)
15528 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15534 /* Offset to stub section. */
15535 val = (stub_sec->output_section->vma
15536 + stub_sec->output_offset);
15537 val -= (htab->glink_eh_frame->output_section->vma
15538 + htab->glink_eh_frame->output_offset
15539 + (p - htab->glink_eh_frame->contents));
15540 if (val + 0x80000000 > 0xffffffff)
15542 info->callbacks->einfo
15543 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15547 bfd_put_32 (dynobj, val, p);
15549 /* stub section size. */
15551 /* Augmentation. */
15556 if (htab->glink != NULL && htab->glink->size != 0)
15562 /* Offset to .glink. */
15563 val = (htab->glink->output_section->vma
15564 + htab->glink->output_offset
15566 val -= (htab->glink_eh_frame->output_section->vma
15567 + htab->glink_eh_frame->output_offset
15568 + (p - htab->glink_eh_frame->contents));
15569 if (val + 0x80000000 > 0xffffffff)
15571 info->callbacks->einfo
15572 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15573 htab->glink->name);
15576 bfd_put_32 (dynobj, val, p);
15580 /* Augmentation. */
15586 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15587 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15588 htab->glink_eh_frame,
15589 htab->glink_eh_frame->contents))
15593 /* We need to handle writing out multiple GOT sections ourselves,
15594 since we didn't add them to DYNOBJ. We know dynobj is the first
15596 while ((dynobj = dynobj->link.next) != NULL)
15600 if (!is_ppc64_elf (dynobj))
15603 s = ppc64_elf_tdata (dynobj)->got;
15606 && s->output_section != bfd_abs_section_ptr
15607 && !bfd_set_section_contents (output_bfd, s->output_section,
15608 s->contents, s->output_offset,
15611 s = ppc64_elf_tdata (dynobj)->relgot;
15614 && s->output_section != bfd_abs_section_ptr
15615 && !bfd_set_section_contents (output_bfd, s->output_section,
15616 s->contents, s->output_offset,
15624 #include "elf64-target.h"
15626 /* FreeBSD support */
15628 #undef TARGET_LITTLE_SYM
15629 #undef TARGET_LITTLE_NAME
15631 #undef TARGET_BIG_SYM
15632 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15633 #undef TARGET_BIG_NAME
15634 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15637 #define ELF_OSABI ELFOSABI_FREEBSD
15640 #define elf64_bed elf64_powerpc_fbsd_bed
15642 #include "elf64-target.h"