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 ppc64_elf_unhandled_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 && symbol->section->owner != NULL
2574 && abiversion (symbol->section->owner) >= 2)
2578 for (i = 0; i < symbol->section->owner->symcount; ++i)
2580 asymbol *symdef = symbol->section->owner->outsymbols[i];
2582 if (strcmp (symdef->name, symbol->name) == 0)
2584 elfsym = (elf_symbol_type *) symdef;
2590 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2592 return bfd_reloc_continue;
2595 static bfd_reloc_status_type
2596 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2597 void *data, asection *input_section,
2598 bfd *output_bfd, char **error_message)
2601 enum elf_ppc64_reloc_type r_type;
2602 bfd_size_type octets;
2603 /* Assume 'at' branch hints. */
2604 bfd_boolean is_isa_v2 = TRUE;
2606 /* If this is a relocatable link (output_bfd test tells us), just
2607 call the generic function. Any adjustment will be done at final
2609 if (output_bfd != NULL)
2610 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2611 input_section, output_bfd, error_message);
2613 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2614 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2615 insn &= ~(0x01 << 21);
2616 r_type = reloc_entry->howto->type;
2617 if (r_type == R_PPC64_ADDR14_BRTAKEN
2618 || r_type == R_PPC64_REL14_BRTAKEN)
2619 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2623 /* Set 'a' bit. This is 0b00010 in BO field for branch
2624 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2625 for branch on CTR insns (BO == 1a00t or 1a01t). */
2626 if ((insn & (0x14 << 21)) == (0x04 << 21))
2628 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2638 if (!bfd_is_com_section (symbol->section))
2639 target = symbol->value;
2640 target += symbol->section->output_section->vma;
2641 target += symbol->section->output_offset;
2642 target += reloc_entry->addend;
2644 from = (reloc_entry->address
2645 + input_section->output_offset
2646 + input_section->output_section->vma);
2648 /* Invert 'y' bit if not the default. */
2649 if ((bfd_signed_vma) (target - from) < 0)
2652 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2654 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2655 input_section, output_bfd, error_message);
2658 static bfd_reloc_status_type
2659 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2660 void *data, asection *input_section,
2661 bfd *output_bfd, char **error_message)
2663 /* If this is a relocatable link (output_bfd test tells us), just
2664 call the generic function. Any adjustment will be done at final
2666 if (output_bfd != NULL)
2667 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2668 input_section, output_bfd, error_message);
2670 /* Subtract the symbol section base address. */
2671 reloc_entry->addend -= symbol->section->output_section->vma;
2672 return bfd_reloc_continue;
2675 static bfd_reloc_status_type
2676 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2677 void *data, asection *input_section,
2678 bfd *output_bfd, char **error_message)
2680 /* If this is a relocatable link (output_bfd test tells us), just
2681 call the generic function. Any adjustment will be done at final
2683 if (output_bfd != NULL)
2684 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2685 input_section, output_bfd, error_message);
2687 /* Subtract the symbol section base address. */
2688 reloc_entry->addend -= symbol->section->output_section->vma;
2690 /* Adjust the addend for sign extension of the low 16 bits. */
2691 reloc_entry->addend += 0x8000;
2692 return bfd_reloc_continue;
2695 static bfd_reloc_status_type
2696 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2697 void *data, asection *input_section,
2698 bfd *output_bfd, char **error_message)
2702 /* If this is a relocatable link (output_bfd test tells us), just
2703 call the generic function. Any adjustment will be done at final
2705 if (output_bfd != NULL)
2706 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2707 input_section, output_bfd, error_message);
2709 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2711 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2713 /* Subtract the TOC base address. */
2714 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2715 return bfd_reloc_continue;
2718 static bfd_reloc_status_type
2719 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2720 void *data, asection *input_section,
2721 bfd *output_bfd, char **error_message)
2725 /* If this is a relocatable link (output_bfd test tells us), just
2726 call the generic function. Any adjustment will be done at final
2728 if (output_bfd != NULL)
2729 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2730 input_section, output_bfd, error_message);
2732 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2734 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2736 /* Subtract the TOC base address. */
2737 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2739 /* Adjust the addend for sign extension of the low 16 bits. */
2740 reloc_entry->addend += 0x8000;
2741 return bfd_reloc_continue;
2744 static bfd_reloc_status_type
2745 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2746 void *data, asection *input_section,
2747 bfd *output_bfd, char **error_message)
2750 bfd_size_type octets;
2752 /* If this is a relocatable link (output_bfd test tells us), just
2753 call the generic function. Any adjustment will be done at final
2755 if (output_bfd != NULL)
2756 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2757 input_section, output_bfd, error_message);
2759 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2761 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2763 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2764 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2765 return bfd_reloc_ok;
2768 static bfd_reloc_status_type
2769 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2770 void *data, asection *input_section,
2771 bfd *output_bfd, char **error_message)
2773 /* If this is a relocatable link (output_bfd test tells us), just
2774 call the generic function. Any adjustment will be done at final
2776 if (output_bfd != NULL)
2777 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2778 input_section, output_bfd, error_message);
2780 if (error_message != NULL)
2782 static char buf[60];
2783 sprintf (buf, "generic linker can't handle %s",
2784 reloc_entry->howto->name);
2785 *error_message = buf;
2787 return bfd_reloc_dangerous;
2790 /* Track GOT entries needed for a given symbol. We might need more
2791 than one got entry per symbol. */
2794 struct got_entry *next;
2796 /* The symbol addend that we'll be placing in the GOT. */
2799 /* Unlike other ELF targets, we use separate GOT entries for the same
2800 symbol referenced from different input files. This is to support
2801 automatic multiple TOC/GOT sections, where the TOC base can vary
2802 from one input file to another. After partitioning into TOC groups
2803 we merge entries within the group.
2805 Point to the BFD owning this GOT entry. */
2808 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2809 TLS_TPREL or TLS_DTPREL for tls entries. */
2810 unsigned char tls_type;
2812 /* Non-zero if got.ent points to real entry. */
2813 unsigned char is_indirect;
2815 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2818 bfd_signed_vma refcount;
2820 struct got_entry *ent;
2824 /* The same for PLT. */
2827 struct plt_entry *next;
2833 bfd_signed_vma refcount;
2838 struct ppc64_elf_obj_tdata
2840 struct elf_obj_tdata elf;
2842 /* Shortcuts to dynamic linker sections. */
2846 /* Used during garbage collection. We attach global symbols defined
2847 on removed .opd entries to this section so that the sym is removed. */
2848 asection *deleted_section;
2850 /* TLS local dynamic got entry handling. Support for multiple GOT
2851 sections means we potentially need one of these for each input bfd. */
2852 struct got_entry tlsld_got;
2855 /* A copy of relocs before they are modified for --emit-relocs. */
2856 Elf_Internal_Rela *relocs;
2858 /* Section contents. */
2862 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2863 the reloc to be in the range -32768 to 32767. */
2864 unsigned int has_small_toc_reloc : 1;
2866 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2867 instruction not one we handle. */
2868 unsigned int unexpected_toc_insn : 1;
2871 #define ppc64_elf_tdata(bfd) \
2872 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2874 #define ppc64_tlsld_got(bfd) \
2875 (&ppc64_elf_tdata (bfd)->tlsld_got)
2877 #define is_ppc64_elf(bfd) \
2878 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2879 && elf_object_id (bfd) == PPC64_ELF_DATA)
2881 /* Override the generic function because we store some extras. */
2884 ppc64_elf_mkobject (bfd *abfd)
2886 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2890 /* Fix bad default arch selected for a 64 bit input bfd when the
2891 default is 32 bit. Also select arch based on apuinfo. */
2894 ppc64_elf_object_p (bfd *abfd)
2896 if (!abfd->arch_info->the_default)
2899 if (abfd->arch_info->bits_per_word == 32)
2901 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2903 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2905 /* Relies on arch after 32 bit default being 64 bit default. */
2906 abfd->arch_info = abfd->arch_info->next;
2907 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2910 return _bfd_elf_ppc_set_arch (abfd);
2913 /* Support for core dump NOTE sections. */
2916 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2918 size_t offset, size;
2920 if (note->descsz != 504)
2924 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2927 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2933 /* Make a ".reg/999" section. */
2934 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2935 size, note->descpos + offset);
2939 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2941 if (note->descsz != 136)
2944 elf_tdata (abfd)->core->pid
2945 = bfd_get_32 (abfd, note->descdata + 24);
2946 elf_tdata (abfd)->core->program
2947 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2948 elf_tdata (abfd)->core->command
2949 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2955 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2968 va_start (ap, note_type);
2969 memset (data, 0, sizeof (data));
2970 strncpy (data + 40, va_arg (ap, const char *), 16);
2971 strncpy (data + 56, va_arg (ap, const char *), 80);
2973 return elfcore_write_note (abfd, buf, bufsiz,
2974 "CORE", note_type, data, sizeof (data));
2985 va_start (ap, note_type);
2986 memset (data, 0, 112);
2987 pid = va_arg (ap, long);
2988 bfd_put_32 (abfd, pid, data + 32);
2989 cursig = va_arg (ap, int);
2990 bfd_put_16 (abfd, cursig, data + 12);
2991 greg = va_arg (ap, const void *);
2992 memcpy (data + 112, greg, 384);
2993 memset (data + 496, 0, 8);
2995 return elfcore_write_note (abfd, buf, bufsiz,
2996 "CORE", note_type, data, sizeof (data));
3001 /* Add extra PPC sections. */
3003 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
3005 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
3006 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3007 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3008 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3009 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3010 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3011 { NULL, 0, 0, 0, 0 }
3014 enum _ppc64_sec_type {
3020 struct _ppc64_elf_section_data
3022 struct bfd_elf_section_data elf;
3026 /* An array with one entry for each opd function descriptor,
3027 and some spares since opd entries may be either 16 or 24 bytes. */
3028 #define OPD_NDX(OFF) ((OFF) >> 4)
3029 struct _opd_sec_data
3031 /* Points to the function code section for local opd entries. */
3032 asection **func_sec;
3034 /* After editing .opd, adjust references to opd local syms. */
3038 /* An array for toc sections, indexed by offset/8. */
3039 struct _toc_sec_data
3041 /* Specifies the relocation symbol index used at a given toc offset. */
3044 /* And the relocation addend. */
3049 enum _ppc64_sec_type sec_type:2;
3051 /* Flag set when small branches are detected. Used to
3052 select suitable defaults for the stub group size. */
3053 unsigned int has_14bit_branch:1;
3056 #define ppc64_elf_section_data(sec) \
3057 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3060 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
3062 if (!sec->used_by_bfd)
3064 struct _ppc64_elf_section_data *sdata;
3065 bfd_size_type amt = sizeof (*sdata);
3067 sdata = bfd_zalloc (abfd, amt);
3070 sec->used_by_bfd = sdata;
3073 return _bfd_elf_new_section_hook (abfd, sec);
3076 static struct _opd_sec_data *
3077 get_opd_info (asection * sec)
3080 && ppc64_elf_section_data (sec) != NULL
3081 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3082 return &ppc64_elf_section_data (sec)->u.opd;
3086 /* Parameters for the qsort hook. */
3087 static bfd_boolean synthetic_relocatable;
3089 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3092 compare_symbols (const void *ap, const void *bp)
3094 const asymbol *a = * (const asymbol **) ap;
3095 const asymbol *b = * (const asymbol **) bp;
3097 /* Section symbols first. */
3098 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3100 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3103 /* then .opd symbols. */
3104 if (strcmp (a->section->name, ".opd") == 0
3105 && strcmp (b->section->name, ".opd") != 0)
3107 if (strcmp (a->section->name, ".opd") != 0
3108 && strcmp (b->section->name, ".opd") == 0)
3111 /* then other code symbols. */
3112 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3113 == (SEC_CODE | SEC_ALLOC)
3114 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3115 != (SEC_CODE | SEC_ALLOC))
3118 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3119 != (SEC_CODE | SEC_ALLOC)
3120 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3121 == (SEC_CODE | SEC_ALLOC))
3124 if (synthetic_relocatable)
3126 if (a->section->id < b->section->id)
3129 if (a->section->id > b->section->id)
3133 if (a->value + a->section->vma < b->value + b->section->vma)
3136 if (a->value + a->section->vma > b->value + b->section->vma)
3139 /* For syms with the same value, prefer strong dynamic global function
3140 syms over other syms. */
3141 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3144 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3147 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3150 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3153 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3156 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3159 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3162 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3168 /* Search SYMS for a symbol of the given VALUE. */
3171 sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
3175 if (id == (unsigned) -1)
3179 mid = (lo + hi) >> 1;
3180 if (syms[mid]->value + syms[mid]->section->vma < value)
3182 else if (syms[mid]->value + syms[mid]->section->vma > value)
3192 mid = (lo + hi) >> 1;
3193 if (syms[mid]->section->id < id)
3195 else if (syms[mid]->section->id > id)
3197 else if (syms[mid]->value < value)
3199 else if (syms[mid]->value > value)
3209 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3211 bfd_vma vma = *(bfd_vma *) ptr;
3212 return ((section->flags & SEC_ALLOC) != 0
3213 && section->vma <= vma
3214 && vma < section->vma + section->size);
3217 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3218 entry syms. Also generate @plt symbols for the glink branch table.
3219 Returns count of synthetic symbols in RET or -1 on error. */
3222 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3223 long static_count, asymbol **static_syms,
3224 long dyn_count, asymbol **dyn_syms,
3231 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3232 asection *opd = NULL;
3233 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3235 int abi = abiversion (abfd);
3241 opd = bfd_get_section_by_name (abfd, ".opd");
3242 if (opd == NULL && abi == 1)
3246 symcount = static_count;
3248 symcount += dyn_count;
3252 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3256 if (!relocatable && static_count != 0 && dyn_count != 0)
3258 /* Use both symbol tables. */
3259 memcpy (syms, static_syms, static_count * sizeof (*syms));
3260 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3262 else if (!relocatable && static_count == 0)
3263 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3265 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3267 synthetic_relocatable = relocatable;
3268 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3270 if (!relocatable && symcount > 1)
3273 /* Trim duplicate syms, since we may have merged the normal and
3274 dynamic symbols. Actually, we only care about syms that have
3275 different values, so trim any with the same value. */
3276 for (i = 1, j = 1; i < symcount; ++i)
3277 if (syms[i - 1]->value + syms[i - 1]->section->vma
3278 != syms[i]->value + syms[i]->section->vma)
3279 syms[j++] = syms[i];
3284 if (strcmp (syms[i]->section->name, ".opd") == 0)
3288 for (; i < symcount; ++i)
3289 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3290 != (SEC_CODE | SEC_ALLOC))
3291 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3295 for (; i < symcount; ++i)
3296 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3300 for (; i < symcount; ++i)
3301 if (strcmp (syms[i]->section->name, ".opd") != 0)
3305 for (; i < symcount; ++i)
3306 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3307 != (SEC_CODE | SEC_ALLOC))
3315 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3320 if (opdsymend == secsymend)
3323 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3324 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3328 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3335 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3339 while (r < opd->relocation + relcount
3340 && r->address < syms[i]->value + opd->vma)
3343 if (r == opd->relocation + relcount)
3346 if (r->address != syms[i]->value + opd->vma)
3349 if (r->howto->type != R_PPC64_ADDR64)
3352 sym = *r->sym_ptr_ptr;
3353 if (!sym_exists_at (syms, opdsymend, symcount,
3354 sym->section->id, sym->value + r->addend))
3357 size += sizeof (asymbol);
3358 size += strlen (syms[i]->name) + 2;
3364 s = *ret = bfd_malloc (size);
3371 names = (char *) (s + count);
3373 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3377 while (r < opd->relocation + relcount
3378 && r->address < syms[i]->value + opd->vma)
3381 if (r == opd->relocation + relcount)
3384 if (r->address != syms[i]->value + opd->vma)
3387 if (r->howto->type != R_PPC64_ADDR64)
3390 sym = *r->sym_ptr_ptr;
3391 if (!sym_exists_at (syms, opdsymend, symcount,
3392 sym->section->id, sym->value + r->addend))
3397 s->flags |= BSF_SYNTHETIC;
3398 s->section = sym->section;
3399 s->value = sym->value + r->addend;
3402 len = strlen (syms[i]->name);
3403 memcpy (names, syms[i]->name, len + 1);
3405 /* Have udata.p point back to the original symbol this
3406 synthetic symbol was derived from. */
3407 s->udata.p = syms[i];
3414 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3415 bfd_byte *contents = NULL;
3418 bfd_vma glink_vma = 0, resolv_vma = 0;
3419 asection *dynamic, *glink = NULL, *relplt = NULL;
3422 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3424 free_contents_and_exit_err:
3426 free_contents_and_exit:
3433 for (i = secsymend; i < opdsymend; ++i)
3437 /* Ignore bogus symbols. */
3438 if (syms[i]->value > opd->size - 8)
3441 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3442 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3445 size += sizeof (asymbol);
3446 size += strlen (syms[i]->name) + 2;
3450 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3452 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3454 bfd_byte *dynbuf, *extdyn, *extdynend;
3456 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3458 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3459 goto free_contents_and_exit_err;
3461 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3462 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3465 extdynend = extdyn + dynamic->size;
3466 for (; extdyn < extdynend; extdyn += extdynsize)
3468 Elf_Internal_Dyn dyn;
3469 (*swap_dyn_in) (abfd, extdyn, &dyn);
3471 if (dyn.d_tag == DT_NULL)
3474 if (dyn.d_tag == DT_PPC64_GLINK)
3476 /* The first glink stub starts at offset 32; see
3477 comment in ppc64_elf_finish_dynamic_sections. */
3478 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3479 /* The .glink section usually does not survive the final
3480 link; search for the section (usually .text) where the
3481 glink stubs now reside. */
3482 glink = bfd_sections_find_if (abfd, section_covers_vma,
3493 /* Determine __glink trampoline by reading the relative branch
3494 from the first glink stub. */
3496 unsigned int off = 0;
3498 while (bfd_get_section_contents (abfd, glink, buf,
3499 glink_vma + off - glink->vma, 4))
3501 unsigned int insn = bfd_get_32 (abfd, buf);
3503 if ((insn & ~0x3fffffc) == 0)
3505 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3514 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3516 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3519 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3520 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3521 goto free_contents_and_exit_err;
3523 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3524 size += plt_count * sizeof (asymbol);
3526 p = relplt->relocation;
3527 for (i = 0; i < plt_count; i++, p++)
3529 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3531 size += sizeof ("+0x") - 1 + 16;
3537 goto free_contents_and_exit;
3538 s = *ret = bfd_malloc (size);
3540 goto free_contents_and_exit_err;
3542 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3544 for (i = secsymend; i < opdsymend; ++i)
3548 if (syms[i]->value > opd->size - 8)
3551 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3552 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3556 asection *sec = abfd->sections;
3563 long mid = (lo + hi) >> 1;
3564 if (syms[mid]->section->vma < ent)
3566 else if (syms[mid]->section->vma > ent)
3570 sec = syms[mid]->section;
3575 if (lo >= hi && lo > codesecsym)
3576 sec = syms[lo - 1]->section;
3578 for (; sec != NULL; sec = sec->next)
3582 /* SEC_LOAD may not be set if SEC is from a separate debug
3584 if ((sec->flags & SEC_ALLOC) == 0)
3586 if ((sec->flags & SEC_CODE) != 0)
3589 s->flags |= BSF_SYNTHETIC;
3590 s->value = ent - s->section->vma;
3593 len = strlen (syms[i]->name);
3594 memcpy (names, syms[i]->name, len + 1);
3596 /* Have udata.p point back to the original symbol this
3597 synthetic symbol was derived from. */
3598 s->udata.p = syms[i];
3604 if (glink != NULL && relplt != NULL)
3608 /* Add a symbol for the main glink trampoline. */
3609 memset (s, 0, sizeof *s);
3611 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3613 s->value = resolv_vma - glink->vma;
3615 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3616 names += sizeof ("__glink_PLTresolve");
3621 /* FIXME: It would be very much nicer to put sym@plt on the
3622 stub rather than on the glink branch table entry. The
3623 objdump disassembler would then use a sensible symbol
3624 name on plt calls. The difficulty in doing so is
3625 a) finding the stubs, and,
3626 b) matching stubs against plt entries, and,
3627 c) there can be multiple stubs for a given plt entry.
3629 Solving (a) could be done by code scanning, but older
3630 ppc64 binaries used different stubs to current code.
3631 (b) is the tricky one since you need to known the toc
3632 pointer for at least one function that uses a pic stub to
3633 be able to calculate the plt address referenced.
3634 (c) means gdb would need to set multiple breakpoints (or
3635 find the glink branch itself) when setting breakpoints
3636 for pending shared library loads. */
3637 p = relplt->relocation;
3638 for (i = 0; i < plt_count; i++, p++)
3642 *s = **p->sym_ptr_ptr;
3643 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3644 we are defining a symbol, ensure one of them is set. */
3645 if ((s->flags & BSF_LOCAL) == 0)
3646 s->flags |= BSF_GLOBAL;
3647 s->flags |= BSF_SYNTHETIC;
3649 s->value = glink_vma - glink->vma;
3652 len = strlen ((*p->sym_ptr_ptr)->name);
3653 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3657 memcpy (names, "+0x", sizeof ("+0x") - 1);
3658 names += sizeof ("+0x") - 1;
3659 bfd_sprintf_vma (abfd, names, p->addend);
3660 names += strlen (names);
3662 memcpy (names, "@plt", sizeof ("@plt"));
3663 names += sizeof ("@plt");
3683 /* The following functions are specific to the ELF linker, while
3684 functions above are used generally. Those named ppc64_elf_* are
3685 called by the main ELF linker code. They appear in this file more
3686 or less in the order in which they are called. eg.
3687 ppc64_elf_check_relocs is called early in the link process,
3688 ppc64_elf_finish_dynamic_sections is one of the last functions
3691 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3692 functions have both a function code symbol and a function descriptor
3693 symbol. A call to foo in a relocatable object file looks like:
3700 The function definition in another object file might be:
3704 . .quad .TOC.@tocbase
3710 When the linker resolves the call during a static link, the branch
3711 unsurprisingly just goes to .foo and the .opd information is unused.
3712 If the function definition is in a shared library, things are a little
3713 different: The call goes via a plt call stub, the opd information gets
3714 copied to the plt, and the linker patches the nop.
3722 . std 2,40(1) # in practice, the call stub
3723 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3724 . addi 11,11,Lfoo@toc@l # this is the general idea
3732 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3734 The "reloc ()" notation is supposed to indicate that the linker emits
3735 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3738 What are the difficulties here? Well, firstly, the relocations
3739 examined by the linker in check_relocs are against the function code
3740 sym .foo, while the dynamic relocation in the plt is emitted against
3741 the function descriptor symbol, foo. Somewhere along the line, we need
3742 to carefully copy dynamic link information from one symbol to the other.
3743 Secondly, the generic part of the elf linker will make .foo a dynamic
3744 symbol as is normal for most other backends. We need foo dynamic
3745 instead, at least for an application final link. However, when
3746 creating a shared library containing foo, we need to have both symbols
3747 dynamic so that references to .foo are satisfied during the early
3748 stages of linking. Otherwise the linker might decide to pull in a
3749 definition from some other object, eg. a static library.
3751 Update: As of August 2004, we support a new convention. Function
3752 calls may use the function descriptor symbol, ie. "bl foo". This
3753 behaves exactly as "bl .foo". */
3755 /* Of those relocs that might be copied as dynamic relocs, this function
3756 selects those that must be copied when linking a shared library,
3757 even when the symbol is local. */
3760 must_be_dyn_reloc (struct bfd_link_info *info,
3761 enum elf_ppc64_reloc_type r_type)
3773 case R_PPC64_TPREL16:
3774 case R_PPC64_TPREL16_LO:
3775 case R_PPC64_TPREL16_HI:
3776 case R_PPC64_TPREL16_HA:
3777 case R_PPC64_TPREL16_DS:
3778 case R_PPC64_TPREL16_LO_DS:
3779 case R_PPC64_TPREL16_HIGH:
3780 case R_PPC64_TPREL16_HIGHA:
3781 case R_PPC64_TPREL16_HIGHER:
3782 case R_PPC64_TPREL16_HIGHERA:
3783 case R_PPC64_TPREL16_HIGHEST:
3784 case R_PPC64_TPREL16_HIGHESTA:
3785 case R_PPC64_TPREL64:
3786 return !bfd_link_executable (info);
3790 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3791 copying dynamic variables from a shared lib into an app's dynbss
3792 section, and instead use a dynamic relocation to point into the
3793 shared lib. With code that gcc generates, it's vital that this be
3794 enabled; In the PowerPC64 ABI, the address of a function is actually
3795 the address of a function descriptor, which resides in the .opd
3796 section. gcc uses the descriptor directly rather than going via the
3797 GOT as some other ABI's do, which means that initialized function
3798 pointers must reference the descriptor. Thus, a function pointer
3799 initialized to the address of a function in a shared library will
3800 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3801 redefines the function descriptor symbol to point to the copy. This
3802 presents a problem as a plt entry for that function is also
3803 initialized from the function descriptor symbol and the copy reloc
3804 may not be initialized first. */
3805 #define ELIMINATE_COPY_RELOCS 1
3807 /* Section name for stubs is the associated section name plus this
3809 #define STUB_SUFFIX ".stub"
3812 ppc_stub_long_branch:
3813 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3814 destination, but a 24 bit branch in a stub section will reach.
3817 ppc_stub_plt_branch:
3818 Similar to the above, but a 24 bit branch in the stub section won't
3819 reach its destination.
3820 . addis %r11,%r2,xxx@toc@ha
3821 . ld %r12,xxx@toc@l(%r11)
3826 Used to call a function in a shared library. If it so happens that
3827 the plt entry referenced crosses a 64k boundary, then an extra
3828 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3830 . addis %r11,%r2,xxx@toc@ha
3831 . ld %r12,xxx+0@toc@l(%r11)
3833 . ld %r2,xxx+8@toc@l(%r11)
3834 . ld %r11,xxx+16@toc@l(%r11)
3837 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3838 code to adjust the value and save r2 to support multiple toc sections.
3839 A ppc_stub_long_branch with an r2 offset looks like:
3841 . addis %r2,%r2,off@ha
3842 . addi %r2,%r2,off@l
3845 A ppc_stub_plt_branch with an r2 offset looks like:
3847 . addis %r11,%r2,xxx@toc@ha
3848 . ld %r12,xxx@toc@l(%r11)
3849 . addis %r2,%r2,off@ha
3850 . addi %r2,%r2,off@l
3854 In cases where the "addis" instruction would add zero, the "addis" is
3855 omitted and following instructions modified slightly in some cases.
3858 enum ppc_stub_type {
3860 ppc_stub_long_branch,
3861 ppc_stub_long_branch_r2off,
3862 ppc_stub_plt_branch,
3863 ppc_stub_plt_branch_r2off,
3865 ppc_stub_plt_call_r2save,
3866 ppc_stub_global_entry,
3870 /* Information on stub grouping. */
3873 /* The stub section. */
3875 /* This is the section to which stubs in the group will be attached. */
3878 struct map_stub *next;
3879 /* Whether to emit a copy of register save/restore functions in this
3884 struct ppc_stub_hash_entry {
3886 /* Base hash table entry structure. */
3887 struct bfd_hash_entry root;
3889 enum ppc_stub_type stub_type;
3891 /* Group information. */
3892 struct map_stub *group;
3894 /* Offset within stub_sec of the beginning of this stub. */
3895 bfd_vma stub_offset;
3897 /* Given the symbol's value and its section we can determine its final
3898 value when building the stubs (so the stub knows where to jump. */
3899 bfd_vma target_value;
3900 asection *target_section;
3902 /* The symbol table entry, if any, that this was derived from. */
3903 struct ppc_link_hash_entry *h;
3904 struct plt_entry *plt_ent;
3906 /* Symbol st_other. */
3907 unsigned char other;
3910 struct ppc_branch_hash_entry {
3912 /* Base hash table entry structure. */
3913 struct bfd_hash_entry root;
3915 /* Offset within branch lookup table. */
3916 unsigned int offset;
3918 /* Generation marker. */
3922 /* Used to track dynamic relocations for local symbols. */
3923 struct ppc_dyn_relocs
3925 struct ppc_dyn_relocs *next;
3927 /* The input section of the reloc. */
3930 /* Total number of relocs copied for the input section. */
3931 unsigned int count : 31;
3933 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3934 unsigned int ifunc : 1;
3937 struct ppc_link_hash_entry
3939 struct elf_link_hash_entry elf;
3942 /* A pointer to the most recently used stub hash entry against this
3944 struct ppc_stub_hash_entry *stub_cache;
3946 /* A pointer to the next symbol starting with a '.' */
3947 struct ppc_link_hash_entry *next_dot_sym;
3950 /* Track dynamic relocs copied for this symbol. */
3951 struct elf_dyn_relocs *dyn_relocs;
3953 /* Link between function code and descriptor symbols. */
3954 struct ppc_link_hash_entry *oh;
3956 /* Flag function code and descriptor symbols. */
3957 unsigned int is_func:1;
3958 unsigned int is_func_descriptor:1;
3959 unsigned int fake:1;
3961 /* Whether global opd/toc sym has been adjusted or not.
3962 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3963 should be set for all globals defined in any opd/toc section. */
3964 unsigned int adjust_done:1;
3966 /* Set if we twiddled this symbol to weak at some stage. */
3967 unsigned int was_undefined:1;
3969 /* Set if this is an out-of-line register save/restore function,
3970 with non-standard calling convention. */
3971 unsigned int save_res:1;
3973 /* Contexts in which symbol is used in the GOT (or TOC).
3974 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3975 corresponding relocs are encountered during check_relocs.
3976 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3977 indicate the corresponding GOT entry type is not needed.
3978 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3979 a TPREL one. We use a separate flag rather than setting TPREL
3980 just for convenience in distinguishing the two cases. */
3981 #define TLS_GD 1 /* GD reloc. */
3982 #define TLS_LD 2 /* LD reloc. */
3983 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3984 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3985 #define TLS_TLS 16 /* Any TLS reloc. */
3986 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3987 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3988 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3989 unsigned char tls_mask;
3992 /* ppc64 ELF linker hash table. */
3994 struct ppc_link_hash_table
3996 struct elf_link_hash_table elf;
3998 /* The stub hash table. */
3999 struct bfd_hash_table stub_hash_table;
4001 /* Another hash table for plt_branch stubs. */
4002 struct bfd_hash_table branch_hash_table;
4004 /* Hash table for function prologue tocsave. */
4005 htab_t tocsave_htab;
4007 /* Various options and other info passed from the linker. */
4008 struct ppc64_elf_params *params;
4010 /* The size of sec_info below. */
4011 unsigned int sec_info_arr_size;
4013 /* Per-section array of extra section info. Done this way rather
4014 than as part of ppc64_elf_section_data so we have the info for
4015 non-ppc64 sections. */
4018 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4023 /* The section group that this section belongs to. */
4024 struct map_stub *group;
4025 /* A temp section list pointer. */
4030 /* Linked list of groups. */
4031 struct map_stub *group;
4033 /* Temp used when calculating TOC pointers. */
4036 asection *toc_first_sec;
4038 /* Used when adding symbols. */
4039 struct ppc_link_hash_entry *dot_syms;
4041 /* Shortcuts to get to dynamic linker sections. */
4048 asection *glink_eh_frame;
4050 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4051 struct ppc_link_hash_entry *tls_get_addr;
4052 struct ppc_link_hash_entry *tls_get_addr_fd;
4054 /* The size of reliplt used by got entry relocs. */
4055 bfd_size_type got_reli_size;
4058 unsigned long stub_count[ppc_stub_global_entry];
4060 /* Number of stubs against global syms. */
4061 unsigned long stub_globals;
4063 /* Set if we're linking code with function descriptors. */
4064 unsigned int opd_abi:1;
4066 /* Support for multiple toc sections. */
4067 unsigned int do_multi_toc:1;
4068 unsigned int multi_toc_needed:1;
4069 unsigned int second_toc_pass:1;
4070 unsigned int do_toc_opt:1;
4073 unsigned int stub_error:1;
4075 /* Temp used by ppc64_elf_before_check_relocs. */
4076 unsigned int twiddled_syms:1;
4078 /* Incremented every time we size stubs. */
4079 unsigned int stub_iteration;
4081 /* Small local sym cache. */
4082 struct sym_cache sym_cache;
4085 /* Rename some of the generic section flags to better document how they
4088 /* Nonzero if this section has TLS related relocations. */
4089 #define has_tls_reloc sec_flg0
4091 /* Nonzero if this section has a call to __tls_get_addr. */
4092 #define has_tls_get_addr_call sec_flg1
4094 /* Nonzero if this section has any toc or got relocs. */
4095 #define has_toc_reloc sec_flg2
4097 /* Nonzero if this section has a call to another section that uses
4099 #define makes_toc_func_call sec_flg3
4101 /* Recursion protection when determining above flag. */
4102 #define call_check_in_progress sec_flg4
4103 #define call_check_done sec_flg5
4105 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4107 #define ppc_hash_table(p) \
4108 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4109 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4111 #define ppc_stub_hash_lookup(table, string, create, copy) \
4112 ((struct ppc_stub_hash_entry *) \
4113 bfd_hash_lookup ((table), (string), (create), (copy)))
4115 #define ppc_branch_hash_lookup(table, string, create, copy) \
4116 ((struct ppc_branch_hash_entry *) \
4117 bfd_hash_lookup ((table), (string), (create), (copy)))
4119 /* Create an entry in the stub hash table. */
4121 static struct bfd_hash_entry *
4122 stub_hash_newfunc (struct bfd_hash_entry *entry,
4123 struct bfd_hash_table *table,
4126 /* Allocate the structure if it has not already been allocated by a
4130 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4135 /* Call the allocation method of the superclass. */
4136 entry = bfd_hash_newfunc (entry, table, string);
4139 struct ppc_stub_hash_entry *eh;
4141 /* Initialize the local fields. */
4142 eh = (struct ppc_stub_hash_entry *) entry;
4143 eh->stub_type = ppc_stub_none;
4145 eh->stub_offset = 0;
4146 eh->target_value = 0;
4147 eh->target_section = NULL;
4156 /* Create an entry in the branch hash table. */
4158 static struct bfd_hash_entry *
4159 branch_hash_newfunc (struct bfd_hash_entry *entry,
4160 struct bfd_hash_table *table,
4163 /* Allocate the structure if it has not already been allocated by a
4167 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4172 /* Call the allocation method of the superclass. */
4173 entry = bfd_hash_newfunc (entry, table, string);
4176 struct ppc_branch_hash_entry *eh;
4178 /* Initialize the local fields. */
4179 eh = (struct ppc_branch_hash_entry *) entry;
4187 /* Create an entry in a ppc64 ELF linker hash table. */
4189 static struct bfd_hash_entry *
4190 link_hash_newfunc (struct bfd_hash_entry *entry,
4191 struct bfd_hash_table *table,
4194 /* Allocate the structure if it has not already been allocated by a
4198 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4203 /* Call the allocation method of the superclass. */
4204 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4207 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4209 memset (&eh->u.stub_cache, 0,
4210 (sizeof (struct ppc_link_hash_entry)
4211 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4213 /* When making function calls, old ABI code references function entry
4214 points (dot symbols), while new ABI code references the function
4215 descriptor symbol. We need to make any combination of reference and
4216 definition work together, without breaking archive linking.
4218 For a defined function "foo" and an undefined call to "bar":
4219 An old object defines "foo" and ".foo", references ".bar" (possibly
4221 A new object defines "foo" and references "bar".
4223 A new object thus has no problem with its undefined symbols being
4224 satisfied by definitions in an old object. On the other hand, the
4225 old object won't have ".bar" satisfied by a new object.
4227 Keep a list of newly added dot-symbols. */
4229 if (string[0] == '.')
4231 struct ppc_link_hash_table *htab;
4233 htab = (struct ppc_link_hash_table *) table;
4234 eh->u.next_dot_sym = htab->dot_syms;
4235 htab->dot_syms = eh;
4242 struct tocsave_entry {
4248 tocsave_htab_hash (const void *p)
4250 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4251 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4255 tocsave_htab_eq (const void *p1, const void *p2)
4257 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4258 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4259 return e1->sec == e2->sec && e1->offset == e2->offset;
4262 /* Destroy a ppc64 ELF linker hash table. */
4265 ppc64_elf_link_hash_table_free (bfd *obfd)
4267 struct ppc_link_hash_table *htab;
4269 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4270 if (htab->tocsave_htab)
4271 htab_delete (htab->tocsave_htab);
4272 bfd_hash_table_free (&htab->branch_hash_table);
4273 bfd_hash_table_free (&htab->stub_hash_table);
4274 _bfd_elf_link_hash_table_free (obfd);
4277 /* Create a ppc64 ELF linker hash table. */
4279 static struct bfd_link_hash_table *
4280 ppc64_elf_link_hash_table_create (bfd *abfd)
4282 struct ppc_link_hash_table *htab;
4283 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4285 htab = bfd_zmalloc (amt);
4289 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4290 sizeof (struct ppc_link_hash_entry),
4297 /* Init the stub hash table too. */
4298 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4299 sizeof (struct ppc_stub_hash_entry)))
4301 _bfd_elf_link_hash_table_free (abfd);
4305 /* And the branch hash table. */
4306 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4307 sizeof (struct ppc_branch_hash_entry)))
4309 bfd_hash_table_free (&htab->stub_hash_table);
4310 _bfd_elf_link_hash_table_free (abfd);
4314 htab->tocsave_htab = htab_try_create (1024,
4318 if (htab->tocsave_htab == NULL)
4320 ppc64_elf_link_hash_table_free (abfd);
4323 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4325 /* Initializing two fields of the union is just cosmetic. We really
4326 only care about glist, but when compiled on a 32-bit host the
4327 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4328 debugger inspection of these fields look nicer. */
4329 htab->elf.init_got_refcount.refcount = 0;
4330 htab->elf.init_got_refcount.glist = NULL;
4331 htab->elf.init_plt_refcount.refcount = 0;
4332 htab->elf.init_plt_refcount.glist = NULL;
4333 htab->elf.init_got_offset.offset = 0;
4334 htab->elf.init_got_offset.glist = NULL;
4335 htab->elf.init_plt_offset.offset = 0;
4336 htab->elf.init_plt_offset.glist = NULL;
4338 return &htab->elf.root;
4341 /* Create sections for linker generated code. */
4344 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4346 struct ppc_link_hash_table *htab;
4349 htab = ppc_hash_table (info);
4351 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4352 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4353 if (htab->params->save_restore_funcs)
4355 /* Create .sfpr for code to save and restore fp regs. */
4356 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4358 if (htab->sfpr == NULL
4359 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4363 if (bfd_link_relocatable (info))
4366 /* Create .glink for lazy dynamic linking support. */
4367 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4369 if (htab->glink == NULL
4370 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4373 if (!info->no_ld_generated_unwind_info)
4375 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4376 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4377 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4380 if (htab->glink_eh_frame == NULL
4381 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4385 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4386 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4387 if (htab->elf.iplt == NULL
4388 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4391 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4392 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4394 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4395 if (htab->elf.irelplt == NULL
4396 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4399 /* Create branch lookup table for plt_branch stubs. */
4400 flags = (SEC_ALLOC | SEC_LOAD
4401 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4402 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4404 if (htab->brlt == NULL
4405 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4408 if (!bfd_link_pic (info))
4411 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4412 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4413 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4416 if (htab->relbrlt == NULL
4417 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4423 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4426 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4427 struct ppc64_elf_params *params)
4429 struct ppc_link_hash_table *htab;
4431 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4433 /* Always hook our dynamic sections into the first bfd, which is the
4434 linker created stub bfd. This ensures that the GOT header is at
4435 the start of the output TOC section. */
4436 htab = ppc_hash_table (info);
4437 htab->elf.dynobj = params->stub_bfd;
4438 htab->params = params;
4440 return create_linkage_sections (htab->elf.dynobj, info);
4443 /* Build a name for an entry in the stub hash table. */
4446 ppc_stub_name (const asection *input_section,
4447 const asection *sym_sec,
4448 const struct ppc_link_hash_entry *h,
4449 const Elf_Internal_Rela *rel)
4454 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4455 offsets from a sym as a branch target? In fact, we could
4456 probably assume the addend is always zero. */
4457 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4461 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4462 stub_name = bfd_malloc (len);
4463 if (stub_name == NULL)
4466 len = sprintf (stub_name, "%08x.%s+%x",
4467 input_section->id & 0xffffffff,
4468 h->elf.root.root.string,
4469 (int) rel->r_addend & 0xffffffff);
4473 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4474 stub_name = bfd_malloc (len);
4475 if (stub_name == NULL)
4478 len = sprintf (stub_name, "%08x.%x:%x+%x",
4479 input_section->id & 0xffffffff,
4480 sym_sec->id & 0xffffffff,
4481 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4482 (int) rel->r_addend & 0xffffffff);
4484 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4485 stub_name[len - 2] = 0;
4489 /* Look up an entry in the stub hash. Stub entries are cached because
4490 creating the stub name takes a bit of time. */
4492 static struct ppc_stub_hash_entry *
4493 ppc_get_stub_entry (const asection *input_section,
4494 const asection *sym_sec,
4495 struct ppc_link_hash_entry *h,
4496 const Elf_Internal_Rela *rel,
4497 struct ppc_link_hash_table *htab)
4499 struct ppc_stub_hash_entry *stub_entry;
4500 struct map_stub *group;
4502 /* If this input section is part of a group of sections sharing one
4503 stub section, then use the id of the first section in the group.
4504 Stub names need to include a section id, as there may well be
4505 more than one stub used to reach say, printf, and we need to
4506 distinguish between them. */
4507 group = htab->sec_info[input_section->id].u.group;
4511 if (h != NULL && h->u.stub_cache != NULL
4512 && h->u.stub_cache->h == h
4513 && h->u.stub_cache->group == group)
4515 stub_entry = h->u.stub_cache;
4521 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4522 if (stub_name == NULL)
4525 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4526 stub_name, FALSE, FALSE);
4528 h->u.stub_cache = stub_entry;
4536 /* Add a new stub entry to the stub hash. Not all fields of the new
4537 stub entry are initialised. */
4539 static struct ppc_stub_hash_entry *
4540 ppc_add_stub (const char *stub_name,
4542 struct bfd_link_info *info)
4544 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4545 struct map_stub *group;
4548 struct ppc_stub_hash_entry *stub_entry;
4550 group = htab->sec_info[section->id].u.group;
4551 link_sec = group->link_sec;
4552 stub_sec = group->stub_sec;
4553 if (stub_sec == NULL)
4559 namelen = strlen (link_sec->name);
4560 len = namelen + sizeof (STUB_SUFFIX);
4561 s_name = bfd_alloc (htab->params->stub_bfd, len);
4565 memcpy (s_name, link_sec->name, namelen);
4566 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4567 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4568 if (stub_sec == NULL)
4570 group->stub_sec = stub_sec;
4573 /* Enter this entry into the linker stub hash table. */
4574 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4576 if (stub_entry == NULL)
4578 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4579 section->owner, stub_name);
4583 stub_entry->group = group;
4584 stub_entry->stub_offset = 0;
4588 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4589 not already done. */
4592 create_got_section (bfd *abfd, struct bfd_link_info *info)
4594 asection *got, *relgot;
4596 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4598 if (!is_ppc64_elf (abfd))
4604 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4607 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4608 | SEC_LINKER_CREATED);
4610 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4612 || !bfd_set_section_alignment (abfd, got, 3))
4615 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4616 flags | SEC_READONLY);
4618 || ! bfd_set_section_alignment (abfd, relgot, 3))
4621 ppc64_elf_tdata (abfd)->got = got;
4622 ppc64_elf_tdata (abfd)->relgot = relgot;
4626 /* Create the dynamic sections, and set up shortcuts. */
4629 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4631 struct ppc_link_hash_table *htab;
4633 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4636 htab = ppc_hash_table (info);
4640 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4641 if (!bfd_link_pic (info))
4642 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4644 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4645 || (!bfd_link_pic (info) && !htab->relbss))
4651 /* Follow indirect and warning symbol links. */
4653 static inline struct bfd_link_hash_entry *
4654 follow_link (struct bfd_link_hash_entry *h)
4656 while (h->type == bfd_link_hash_indirect
4657 || h->type == bfd_link_hash_warning)
4662 static inline struct elf_link_hash_entry *
4663 elf_follow_link (struct elf_link_hash_entry *h)
4665 return (struct elf_link_hash_entry *) follow_link (&h->root);
4668 static inline struct ppc_link_hash_entry *
4669 ppc_follow_link (struct ppc_link_hash_entry *h)
4671 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4674 /* Merge PLT info on FROM with that on TO. */
4677 move_plt_plist (struct ppc_link_hash_entry *from,
4678 struct ppc_link_hash_entry *to)
4680 if (from->elf.plt.plist != NULL)
4682 if (to->elf.plt.plist != NULL)
4684 struct plt_entry **entp;
4685 struct plt_entry *ent;
4687 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4689 struct plt_entry *dent;
4691 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4692 if (dent->addend == ent->addend)
4694 dent->plt.refcount += ent->plt.refcount;
4701 *entp = to->elf.plt.plist;
4704 to->elf.plt.plist = from->elf.plt.plist;
4705 from->elf.plt.plist = NULL;
4709 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4712 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4713 struct elf_link_hash_entry *dir,
4714 struct elf_link_hash_entry *ind)
4716 struct ppc_link_hash_entry *edir, *eind;
4718 edir = (struct ppc_link_hash_entry *) dir;
4719 eind = (struct ppc_link_hash_entry *) ind;
4721 edir->is_func |= eind->is_func;
4722 edir->is_func_descriptor |= eind->is_func_descriptor;
4723 edir->tls_mask |= eind->tls_mask;
4724 if (eind->oh != NULL)
4725 edir->oh = ppc_follow_link (eind->oh);
4727 /* If called to transfer flags for a weakdef during processing
4728 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4729 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4730 if (!(ELIMINATE_COPY_RELOCS
4731 && eind->elf.root.type != bfd_link_hash_indirect
4732 && edir->elf.dynamic_adjusted))
4733 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4735 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4736 edir->elf.ref_regular |= eind->elf.ref_regular;
4737 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4738 edir->elf.needs_plt |= eind->elf.needs_plt;
4739 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4741 /* Copy over any dynamic relocs we may have on the indirect sym. */
4742 if (eind->dyn_relocs != NULL)
4744 if (edir->dyn_relocs != NULL)
4746 struct elf_dyn_relocs **pp;
4747 struct elf_dyn_relocs *p;
4749 /* Add reloc counts against the indirect sym to the direct sym
4750 list. Merge any entries against the same section. */
4751 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4753 struct elf_dyn_relocs *q;
4755 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4756 if (q->sec == p->sec)
4758 q->pc_count += p->pc_count;
4759 q->count += p->count;
4766 *pp = edir->dyn_relocs;
4769 edir->dyn_relocs = eind->dyn_relocs;
4770 eind->dyn_relocs = NULL;
4773 /* If we were called to copy over info for a weak sym, that's all.
4774 You might think dyn_relocs need not be copied over; After all,
4775 both syms will be dynamic or both non-dynamic so we're just
4776 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4777 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4778 dyn_relocs in read-only sections, and it does so on what is the
4780 if (eind->elf.root.type != bfd_link_hash_indirect)
4783 /* Copy over got entries that we may have already seen to the
4784 symbol which just became indirect. */
4785 if (eind->elf.got.glist != NULL)
4787 if (edir->elf.got.glist != NULL)
4789 struct got_entry **entp;
4790 struct got_entry *ent;
4792 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4794 struct got_entry *dent;
4796 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4797 if (dent->addend == ent->addend
4798 && dent->owner == ent->owner
4799 && dent->tls_type == ent->tls_type)
4801 dent->got.refcount += ent->got.refcount;
4808 *entp = edir->elf.got.glist;
4811 edir->elf.got.glist = eind->elf.got.glist;
4812 eind->elf.got.glist = NULL;
4815 /* And plt entries. */
4816 move_plt_plist (eind, edir);
4818 if (eind->elf.dynindx != -1)
4820 if (edir->elf.dynindx != -1)
4821 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4822 edir->elf.dynstr_index);
4823 edir->elf.dynindx = eind->elf.dynindx;
4824 edir->elf.dynstr_index = eind->elf.dynstr_index;
4825 eind->elf.dynindx = -1;
4826 eind->elf.dynstr_index = 0;
4830 /* Find the function descriptor hash entry from the given function code
4831 hash entry FH. Link the entries via their OH fields. */
4833 static struct ppc_link_hash_entry *
4834 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4836 struct ppc_link_hash_entry *fdh = fh->oh;
4840 const char *fd_name = fh->elf.root.root.string + 1;
4842 fdh = (struct ppc_link_hash_entry *)
4843 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4847 fdh->is_func_descriptor = 1;
4853 return ppc_follow_link (fdh);
4856 /* Make a fake function descriptor sym for the code sym FH. */
4858 static struct ppc_link_hash_entry *
4859 make_fdh (struct bfd_link_info *info,
4860 struct ppc_link_hash_entry *fh)
4864 struct bfd_link_hash_entry *bh;
4865 struct ppc_link_hash_entry *fdh;
4867 abfd = fh->elf.root.u.undef.abfd;
4868 newsym = bfd_make_empty_symbol (abfd);
4869 newsym->name = fh->elf.root.root.string + 1;
4870 newsym->section = bfd_und_section_ptr;
4872 newsym->flags = BSF_WEAK;
4875 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4876 newsym->flags, newsym->section,
4877 newsym->value, NULL, FALSE, FALSE,
4881 fdh = (struct ppc_link_hash_entry *) bh;
4882 fdh->elf.non_elf = 0;
4884 fdh->is_func_descriptor = 1;
4891 /* Fix function descriptor symbols defined in .opd sections to be
4895 ppc64_elf_add_symbol_hook (bfd *ibfd,
4896 struct bfd_link_info *info,
4897 Elf_Internal_Sym *isym,
4899 flagword *flags ATTRIBUTE_UNUSED,
4903 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4904 && (ibfd->flags & DYNAMIC) == 0
4905 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4906 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4909 && strcmp ((*sec)->name, ".opd") == 0)
4913 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4914 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4915 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4917 /* If the symbol is a function defined in .opd, and the function
4918 code is in a discarded group, let it appear to be undefined. */
4919 if (!bfd_link_relocatable (info)
4920 && (*sec)->reloc_count != 0
4921 && opd_entry_value (*sec, *value, &code_sec, NULL,
4922 FALSE) != (bfd_vma) -1
4923 && discarded_section (code_sec))
4925 *sec = bfd_und_section_ptr;
4926 isym->st_shndx = SHN_UNDEF;
4929 else if (*sec != NULL
4930 && strcmp ((*sec)->name, ".toc") == 0
4931 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4933 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4935 htab->params->object_in_toc = 1;
4938 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4940 if (abiversion (ibfd) == 0)
4941 set_abiversion (ibfd, 2);
4942 else if (abiversion (ibfd) == 1)
4944 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4945 " for ABI version 1\n"), name);
4946 bfd_set_error (bfd_error_bad_value);
4954 /* Merge non-visibility st_other attributes: local entry point. */
4957 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4958 const Elf_Internal_Sym *isym,
4959 bfd_boolean definition,
4960 bfd_boolean dynamic)
4962 if (definition && !dynamic)
4963 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4964 | ELF_ST_VISIBILITY (h->other));
4967 /* This function makes an old ABI object reference to ".bar" cause the
4968 inclusion of a new ABI object archive that defines "bar".
4969 NAME is a symbol defined in an archive. Return a symbol in the hash
4970 table that might be satisfied by the archive symbols. */
4972 static struct elf_link_hash_entry *
4973 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4974 struct bfd_link_info *info,
4977 struct elf_link_hash_entry *h;
4981 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4983 /* Don't return this sym if it is a fake function descriptor
4984 created by add_symbol_adjust. */
4985 && !(h->root.type == bfd_link_hash_undefweak
4986 && ((struct ppc_link_hash_entry *) h)->fake))
4992 len = strlen (name);
4993 dot_name = bfd_alloc (abfd, len + 2);
4994 if (dot_name == NULL)
4995 return (struct elf_link_hash_entry *) 0 - 1;
4997 memcpy (dot_name + 1, name, len + 1);
4998 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4999 bfd_release (abfd, dot_name);
5003 /* This function satisfies all old ABI object references to ".bar" if a
5004 new ABI object defines "bar". Well, at least, undefined dot symbols
5005 are made weak. This stops later archive searches from including an
5006 object if we already have a function descriptor definition. It also
5007 prevents the linker complaining about undefined symbols.
5008 We also check and correct mismatched symbol visibility here. The
5009 most restrictive visibility of the function descriptor and the
5010 function entry symbol is used. */
5013 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5015 struct ppc_link_hash_table *htab;
5016 struct ppc_link_hash_entry *fdh;
5018 if (eh->elf.root.type == bfd_link_hash_indirect)
5021 if (eh->elf.root.type == bfd_link_hash_warning)
5022 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5024 if (eh->elf.root.root.string[0] != '.')
5027 htab = ppc_hash_table (info);
5031 fdh = lookup_fdh (eh, htab);
5034 if (!bfd_link_relocatable (info)
5035 && (eh->elf.root.type == bfd_link_hash_undefined
5036 || eh->elf.root.type == bfd_link_hash_undefweak)
5037 && eh->elf.ref_regular)
5039 /* Make an undefweak function descriptor sym, which is enough to
5040 pull in an --as-needed shared lib, but won't cause link
5041 errors. Archives are handled elsewhere. */
5042 fdh = make_fdh (info, eh);
5045 fdh->elf.ref_regular = 1;
5050 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5051 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5052 if (entry_vis < descr_vis)
5053 fdh->elf.other += entry_vis - descr_vis;
5054 else if (entry_vis > descr_vis)
5055 eh->elf.other += descr_vis - entry_vis;
5057 if ((fdh->elf.root.type == bfd_link_hash_defined
5058 || fdh->elf.root.type == bfd_link_hash_defweak)
5059 && eh->elf.root.type == bfd_link_hash_undefined)
5061 eh->elf.root.type = bfd_link_hash_undefweak;
5062 eh->was_undefined = 1;
5063 htab->twiddled_syms = 1;
5070 /* Set up opd section info and abiversion for IBFD, and process list
5071 of dot-symbols we made in link_hash_newfunc. */
5074 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5076 struct ppc_link_hash_table *htab;
5077 struct ppc_link_hash_entry **p, *eh;
5078 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5080 if (opd != NULL && opd->size != 0)
5082 if (abiversion (ibfd) == 0)
5083 set_abiversion (ibfd, 1);
5084 else if (abiversion (ibfd) == 2)
5086 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5088 ibfd, abiversion (ibfd));
5089 bfd_set_error (bfd_error_bad_value);
5093 if ((ibfd->flags & DYNAMIC) == 0
5094 && (opd->flags & SEC_RELOC) != 0
5095 && opd->reloc_count != 0
5096 && !bfd_is_abs_section (opd->output_section))
5098 /* Garbage collection needs some extra help with .opd sections.
5099 We don't want to necessarily keep everything referenced by
5100 relocs in .opd, as that would keep all functions. Instead,
5101 if we reference an .opd symbol (a function descriptor), we
5102 want to keep the function code symbol's section. This is
5103 easy for global symbols, but for local syms we need to keep
5104 information about the associated function section. */
5106 asection **opd_sym_map;
5108 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5109 opd_sym_map = bfd_zalloc (ibfd, amt);
5110 if (opd_sym_map == NULL)
5112 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5113 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5114 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5118 if (!is_ppc64_elf (info->output_bfd))
5120 htab = ppc_hash_table (info);
5124 /* For input files without an explicit abiversion in e_flags
5125 we should have flagged any with symbol st_other bits set
5126 as ELFv1 and above flagged those with .opd as ELFv2.
5127 Set the output abiversion if not yet set, and for any input
5128 still ambiguous, take its abiversion from the output.
5129 Differences in ABI are reported later. */
5130 if (abiversion (info->output_bfd) == 0)
5131 set_abiversion (info->output_bfd, abiversion (ibfd));
5132 else if (abiversion (ibfd) == 0)
5133 set_abiversion (ibfd, abiversion (info->output_bfd));
5135 p = &htab->dot_syms;
5136 while ((eh = *p) != NULL)
5139 if (&eh->elf == htab->elf.hgot)
5141 else if (htab->elf.hgot == NULL
5142 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5143 htab->elf.hgot = &eh->elf;
5144 else if (!add_symbol_adjust (eh, info))
5146 p = &eh->u.next_dot_sym;
5149 /* Clear the list for non-ppc64 input files. */
5150 p = &htab->dot_syms;
5151 while ((eh = *p) != NULL)
5154 p = &eh->u.next_dot_sym;
5157 /* We need to fix the undefs list for any syms we have twiddled to
5159 if (htab->twiddled_syms)
5161 bfd_link_repair_undef_list (&htab->elf.root);
5162 htab->twiddled_syms = 0;
5167 /* Undo hash table changes when an --as-needed input file is determined
5168 not to be needed. */
5171 ppc64_elf_notice_as_needed (bfd *ibfd,
5172 struct bfd_link_info *info,
5173 enum notice_asneeded_action act)
5175 if (act == notice_not_needed)
5177 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5182 htab->dot_syms = NULL;
5184 return _bfd_elf_notice_as_needed (ibfd, info, act);
5187 /* If --just-symbols against a final linked binary, then assume we need
5188 toc adjusting stubs when calling functions defined there. */
5191 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5193 if ((sec->flags & SEC_CODE) != 0
5194 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5195 && is_ppc64_elf (sec->owner))
5197 if (abiversion (sec->owner) >= 2
5198 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5199 sec->has_toc_reloc = 1;
5201 _bfd_elf_link_just_syms (sec, info);
5204 static struct plt_entry **
5205 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5206 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5208 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5209 struct plt_entry **local_plt;
5210 unsigned char *local_got_tls_masks;
5212 if (local_got_ents == NULL)
5214 bfd_size_type size = symtab_hdr->sh_info;
5216 size *= (sizeof (*local_got_ents)
5217 + sizeof (*local_plt)
5218 + sizeof (*local_got_tls_masks));
5219 local_got_ents = bfd_zalloc (abfd, size);
5220 if (local_got_ents == NULL)
5222 elf_local_got_ents (abfd) = local_got_ents;
5225 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5227 struct got_entry *ent;
5229 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5230 if (ent->addend == r_addend
5231 && ent->owner == abfd
5232 && ent->tls_type == tls_type)
5236 bfd_size_type amt = sizeof (*ent);
5237 ent = bfd_alloc (abfd, amt);
5240 ent->next = local_got_ents[r_symndx];
5241 ent->addend = r_addend;
5243 ent->tls_type = tls_type;
5244 ent->is_indirect = FALSE;
5245 ent->got.refcount = 0;
5246 local_got_ents[r_symndx] = ent;
5248 ent->got.refcount += 1;
5251 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5252 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5253 local_got_tls_masks[r_symndx] |= tls_type;
5255 return local_plt + r_symndx;
5259 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5261 struct plt_entry *ent;
5263 for (ent = *plist; ent != NULL; ent = ent->next)
5264 if (ent->addend == addend)
5268 bfd_size_type amt = sizeof (*ent);
5269 ent = bfd_alloc (abfd, amt);
5273 ent->addend = addend;
5274 ent->plt.refcount = 0;
5277 ent->plt.refcount += 1;
5282 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5284 return (r_type == R_PPC64_REL24
5285 || r_type == R_PPC64_REL14
5286 || r_type == R_PPC64_REL14_BRTAKEN
5287 || r_type == R_PPC64_REL14_BRNTAKEN
5288 || r_type == R_PPC64_ADDR24
5289 || r_type == R_PPC64_ADDR14
5290 || r_type == R_PPC64_ADDR14_BRTAKEN
5291 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5294 /* Look through the relocs for a section during the first phase, and
5295 calculate needed space in the global offset table, procedure
5296 linkage table, and dynamic reloc sections. */
5299 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5300 asection *sec, const Elf_Internal_Rela *relocs)
5302 struct ppc_link_hash_table *htab;
5303 Elf_Internal_Shdr *symtab_hdr;
5304 struct elf_link_hash_entry **sym_hashes;
5305 const Elf_Internal_Rela *rel;
5306 const Elf_Internal_Rela *rel_end;
5308 asection **opd_sym_map;
5309 struct elf_link_hash_entry *tga, *dottga;
5311 if (bfd_link_relocatable (info))
5314 /* Don't do anything special with non-loaded, non-alloced sections.
5315 In particular, any relocs in such sections should not affect GOT
5316 and PLT reference counting (ie. we don't allow them to create GOT
5317 or PLT entries), there's no possibility or desire to optimize TLS
5318 relocs, and there's not much point in propagating relocs to shared
5319 libs that the dynamic linker won't relocate. */
5320 if ((sec->flags & SEC_ALLOC) == 0)
5323 BFD_ASSERT (is_ppc64_elf (abfd));
5325 htab = ppc_hash_table (info);
5329 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5330 FALSE, FALSE, TRUE);
5331 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5332 FALSE, FALSE, TRUE);
5333 symtab_hdr = &elf_symtab_hdr (abfd);
5334 sym_hashes = elf_sym_hashes (abfd);
5337 if (ppc64_elf_section_data (sec) != NULL
5338 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5339 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5341 rel_end = relocs + sec->reloc_count;
5342 for (rel = relocs; rel < rel_end; rel++)
5344 unsigned long r_symndx;
5345 struct elf_link_hash_entry *h;
5346 enum elf_ppc64_reloc_type r_type;
5348 struct _ppc64_elf_section_data *ppc64_sec;
5349 struct plt_entry **ifunc, **plt_list;
5351 r_symndx = ELF64_R_SYM (rel->r_info);
5352 if (r_symndx < symtab_hdr->sh_info)
5356 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5357 h = elf_follow_link (h);
5359 /* PR15323, ref flags aren't set for references in the same
5361 h->root.non_ir_ref = 1;
5363 if (h == htab->elf.hgot)
5364 sec->has_toc_reloc = 1;
5371 if (h->type == STT_GNU_IFUNC)
5374 ifunc = &h->plt.plist;
5379 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5384 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5386 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5387 rel->r_addend, PLT_IFUNC);
5393 r_type = ELF64_R_TYPE (rel->r_info);
5398 /* These special tls relocs tie a call to __tls_get_addr with
5399 its parameter symbol. */
5402 case R_PPC64_GOT_TLSLD16:
5403 case R_PPC64_GOT_TLSLD16_LO:
5404 case R_PPC64_GOT_TLSLD16_HI:
5405 case R_PPC64_GOT_TLSLD16_HA:
5406 tls_type = TLS_TLS | TLS_LD;
5409 case R_PPC64_GOT_TLSGD16:
5410 case R_PPC64_GOT_TLSGD16_LO:
5411 case R_PPC64_GOT_TLSGD16_HI:
5412 case R_PPC64_GOT_TLSGD16_HA:
5413 tls_type = TLS_TLS | TLS_GD;
5416 case R_PPC64_GOT_TPREL16_DS:
5417 case R_PPC64_GOT_TPREL16_LO_DS:
5418 case R_PPC64_GOT_TPREL16_HI:
5419 case R_PPC64_GOT_TPREL16_HA:
5420 if (bfd_link_pic (info))
5421 info->flags |= DF_STATIC_TLS;
5422 tls_type = TLS_TLS | TLS_TPREL;
5425 case R_PPC64_GOT_DTPREL16_DS:
5426 case R_PPC64_GOT_DTPREL16_LO_DS:
5427 case R_PPC64_GOT_DTPREL16_HI:
5428 case R_PPC64_GOT_DTPREL16_HA:
5429 tls_type = TLS_TLS | TLS_DTPREL;
5431 sec->has_tls_reloc = 1;
5435 case R_PPC64_GOT16_DS:
5436 case R_PPC64_GOT16_HA:
5437 case R_PPC64_GOT16_HI:
5438 case R_PPC64_GOT16_LO:
5439 case R_PPC64_GOT16_LO_DS:
5440 /* This symbol requires a global offset table entry. */
5441 sec->has_toc_reloc = 1;
5442 if (r_type == R_PPC64_GOT_TLSLD16
5443 || r_type == R_PPC64_GOT_TLSGD16
5444 || r_type == R_PPC64_GOT_TPREL16_DS
5445 || r_type == R_PPC64_GOT_DTPREL16_DS
5446 || r_type == R_PPC64_GOT16
5447 || r_type == R_PPC64_GOT16_DS)
5449 htab->do_multi_toc = 1;
5450 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5453 if (ppc64_elf_tdata (abfd)->got == NULL
5454 && !create_got_section (abfd, info))
5459 struct ppc_link_hash_entry *eh;
5460 struct got_entry *ent;
5462 eh = (struct ppc_link_hash_entry *) h;
5463 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5464 if (ent->addend == rel->r_addend
5465 && ent->owner == abfd
5466 && ent->tls_type == tls_type)
5470 bfd_size_type amt = sizeof (*ent);
5471 ent = bfd_alloc (abfd, amt);
5474 ent->next = eh->elf.got.glist;
5475 ent->addend = rel->r_addend;
5477 ent->tls_type = tls_type;
5478 ent->is_indirect = FALSE;
5479 ent->got.refcount = 0;
5480 eh->elf.got.glist = ent;
5482 ent->got.refcount += 1;
5483 eh->tls_mask |= tls_type;
5486 /* This is a global offset table entry for a local symbol. */
5487 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5488 rel->r_addend, tls_type))
5491 /* We may also need a plt entry if the symbol turns out to be
5493 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5495 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5500 case R_PPC64_PLT16_HA:
5501 case R_PPC64_PLT16_HI:
5502 case R_PPC64_PLT16_LO:
5505 /* This symbol requires a procedure linkage table entry. */
5510 if (h->root.root.string[0] == '.'
5511 && h->root.root.string[1] != '\0')
5512 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5513 plt_list = &h->plt.plist;
5515 if (plt_list == NULL)
5517 /* It does not make sense to have a procedure linkage
5518 table entry for a non-ifunc local symbol. */
5519 info->callbacks->einfo
5520 (_("%P: %H: %s reloc against local symbol\n"),
5521 abfd, sec, rel->r_offset,
5522 ppc64_elf_howto_table[r_type]->name);
5523 bfd_set_error (bfd_error_bad_value);
5526 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5530 /* The following relocations don't need to propagate the
5531 relocation if linking a shared object since they are
5532 section relative. */
5533 case R_PPC64_SECTOFF:
5534 case R_PPC64_SECTOFF_LO:
5535 case R_PPC64_SECTOFF_HI:
5536 case R_PPC64_SECTOFF_HA:
5537 case R_PPC64_SECTOFF_DS:
5538 case R_PPC64_SECTOFF_LO_DS:
5539 case R_PPC64_DTPREL16:
5540 case R_PPC64_DTPREL16_LO:
5541 case R_PPC64_DTPREL16_HI:
5542 case R_PPC64_DTPREL16_HA:
5543 case R_PPC64_DTPREL16_DS:
5544 case R_PPC64_DTPREL16_LO_DS:
5545 case R_PPC64_DTPREL16_HIGH:
5546 case R_PPC64_DTPREL16_HIGHA:
5547 case R_PPC64_DTPREL16_HIGHER:
5548 case R_PPC64_DTPREL16_HIGHERA:
5549 case R_PPC64_DTPREL16_HIGHEST:
5550 case R_PPC64_DTPREL16_HIGHESTA:
5555 case R_PPC64_REL16_LO:
5556 case R_PPC64_REL16_HI:
5557 case R_PPC64_REL16_HA:
5558 case R_PPC64_REL16DX_HA:
5561 /* Not supported as a dynamic relocation. */
5562 case R_PPC64_ADDR64_LOCAL:
5563 if (bfd_link_pic (info))
5565 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5567 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5568 "in shared libraries and PIEs.\n"),
5569 abfd, sec, rel->r_offset,
5570 ppc64_elf_howto_table[r_type]->name);
5571 bfd_set_error (bfd_error_bad_value);
5577 case R_PPC64_TOC16_DS:
5578 htab->do_multi_toc = 1;
5579 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5580 case R_PPC64_TOC16_LO:
5581 case R_PPC64_TOC16_HI:
5582 case R_PPC64_TOC16_HA:
5583 case R_PPC64_TOC16_LO_DS:
5584 sec->has_toc_reloc = 1;
5591 /* This relocation describes the C++ object vtable hierarchy.
5592 Reconstruct it for later use during GC. */
5593 case R_PPC64_GNU_VTINHERIT:
5594 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5598 /* This relocation describes which C++ vtable entries are actually
5599 used. Record for later use during GC. */
5600 case R_PPC64_GNU_VTENTRY:
5601 BFD_ASSERT (h != NULL);
5603 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5608 case R_PPC64_REL14_BRTAKEN:
5609 case R_PPC64_REL14_BRNTAKEN:
5611 asection *dest = NULL;
5613 /* Heuristic: If jumping outside our section, chances are
5614 we are going to need a stub. */
5617 /* If the sym is weak it may be overridden later, so
5618 don't assume we know where a weak sym lives. */
5619 if (h->root.type == bfd_link_hash_defined)
5620 dest = h->root.u.def.section;
5624 Elf_Internal_Sym *isym;
5626 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5631 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5635 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5644 if (h->root.root.string[0] == '.'
5645 && h->root.root.string[1] != '\0')
5646 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5648 if (h == tga || h == dottga)
5650 sec->has_tls_reloc = 1;
5652 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5653 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5654 /* We have a new-style __tls_get_addr call with
5658 /* Mark this section as having an old-style call. */
5659 sec->has_tls_get_addr_call = 1;
5661 plt_list = &h->plt.plist;
5664 /* We may need a .plt entry if the function this reloc
5665 refers to is in a shared lib. */
5667 && !update_plt_info (abfd, plt_list, rel->r_addend))
5671 case R_PPC64_ADDR14:
5672 case R_PPC64_ADDR14_BRNTAKEN:
5673 case R_PPC64_ADDR14_BRTAKEN:
5674 case R_PPC64_ADDR24:
5677 case R_PPC64_TPREL64:
5678 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5679 if (bfd_link_pic (info))
5680 info->flags |= DF_STATIC_TLS;
5683 case R_PPC64_DTPMOD64:
5684 if (rel + 1 < rel_end
5685 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5686 && rel[1].r_offset == rel->r_offset + 8)
5687 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5689 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5692 case R_PPC64_DTPREL64:
5693 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5695 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5696 && rel[-1].r_offset == rel->r_offset - 8)
5697 /* This is the second reloc of a dtpmod, dtprel pair.
5698 Don't mark with TLS_DTPREL. */
5702 sec->has_tls_reloc = 1;
5705 struct ppc_link_hash_entry *eh;
5706 eh = (struct ppc_link_hash_entry *) h;
5707 eh->tls_mask |= tls_type;
5710 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5711 rel->r_addend, tls_type))
5714 ppc64_sec = ppc64_elf_section_data (sec);
5715 if (ppc64_sec->sec_type != sec_toc)
5719 /* One extra to simplify get_tls_mask. */
5720 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5721 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5722 if (ppc64_sec->u.toc.symndx == NULL)
5724 amt = sec->size * sizeof (bfd_vma) / 8;
5725 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5726 if (ppc64_sec->u.toc.add == NULL)
5728 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5729 ppc64_sec->sec_type = sec_toc;
5731 BFD_ASSERT (rel->r_offset % 8 == 0);
5732 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5733 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5735 /* Mark the second slot of a GD or LD entry.
5736 -1 to indicate GD and -2 to indicate LD. */
5737 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5738 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5739 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5740 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5743 case R_PPC64_TPREL16:
5744 case R_PPC64_TPREL16_LO:
5745 case R_PPC64_TPREL16_HI:
5746 case R_PPC64_TPREL16_HA:
5747 case R_PPC64_TPREL16_DS:
5748 case R_PPC64_TPREL16_LO_DS:
5749 case R_PPC64_TPREL16_HIGH:
5750 case R_PPC64_TPREL16_HIGHA:
5751 case R_PPC64_TPREL16_HIGHER:
5752 case R_PPC64_TPREL16_HIGHERA:
5753 case R_PPC64_TPREL16_HIGHEST:
5754 case R_PPC64_TPREL16_HIGHESTA:
5755 if (bfd_link_pic (info))
5757 info->flags |= DF_STATIC_TLS;
5762 case R_PPC64_ADDR64:
5763 if (opd_sym_map != NULL
5764 && rel + 1 < rel_end
5765 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5769 if (h->root.root.string[0] == '.'
5770 && h->root.root.string[1] != 0
5771 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5774 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5779 Elf_Internal_Sym *isym;
5781 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5786 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5787 if (s != NULL && s != sec)
5788 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5793 case R_PPC64_ADDR16:
5794 case R_PPC64_ADDR16_DS:
5795 case R_PPC64_ADDR16_HA:
5796 case R_PPC64_ADDR16_HI:
5797 case R_PPC64_ADDR16_HIGH:
5798 case R_PPC64_ADDR16_HIGHA:
5799 case R_PPC64_ADDR16_HIGHER:
5800 case R_PPC64_ADDR16_HIGHERA:
5801 case R_PPC64_ADDR16_HIGHEST:
5802 case R_PPC64_ADDR16_HIGHESTA:
5803 case R_PPC64_ADDR16_LO:
5804 case R_PPC64_ADDR16_LO_DS:
5805 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5806 && rel->r_addend == 0)
5808 /* We may need a .plt entry if this reloc refers to a
5809 function in a shared lib. */
5810 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5812 h->pointer_equality_needed = 1;
5819 case R_PPC64_ADDR32:
5820 case R_PPC64_UADDR16:
5821 case R_PPC64_UADDR32:
5822 case R_PPC64_UADDR64:
5824 if (h != NULL && !bfd_link_pic (info))
5825 /* We may need a copy reloc. */
5828 /* Don't propagate .opd relocs. */
5829 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5832 /* If we are creating a shared library, and this is a reloc
5833 against a global symbol, or a non PC relative reloc
5834 against a local symbol, then we need to copy the reloc
5835 into the shared library. However, if we are linking with
5836 -Bsymbolic, we do not need to copy a reloc against a
5837 global symbol which is defined in an object we are
5838 including in the link (i.e., DEF_REGULAR is set). At
5839 this point we have not seen all the input files, so it is
5840 possible that DEF_REGULAR is not set now but will be set
5841 later (it is never cleared). In case of a weak definition,
5842 DEF_REGULAR may be cleared later by a strong definition in
5843 a shared library. We account for that possibility below by
5844 storing information in the dyn_relocs field of the hash
5845 table entry. A similar situation occurs when creating
5846 shared libraries and symbol visibility changes render the
5849 If on the other hand, we are creating an executable, we
5850 may need to keep relocations for symbols satisfied by a
5851 dynamic library if we manage to avoid copy relocs for the
5854 if ((bfd_link_pic (info)
5855 && (must_be_dyn_reloc (info, r_type)
5857 && (!SYMBOLIC_BIND (info, h)
5858 || h->root.type == bfd_link_hash_defweak
5859 || !h->def_regular))))
5860 || (ELIMINATE_COPY_RELOCS
5861 && !bfd_link_pic (info)
5863 && (h->root.type == bfd_link_hash_defweak
5864 || !h->def_regular))
5865 || (!bfd_link_pic (info)
5868 /* We must copy these reloc types into the output file.
5869 Create a reloc section in dynobj and make room for
5873 sreloc = _bfd_elf_make_dynamic_reloc_section
5874 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5880 /* If this is a global symbol, we count the number of
5881 relocations we need for this symbol. */
5884 struct elf_dyn_relocs *p;
5885 struct elf_dyn_relocs **head;
5887 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5889 if (p == NULL || p->sec != sec)
5891 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5901 if (!must_be_dyn_reloc (info, r_type))
5906 /* Track dynamic relocs needed for local syms too.
5907 We really need local syms available to do this
5909 struct ppc_dyn_relocs *p;
5910 struct ppc_dyn_relocs **head;
5911 bfd_boolean is_ifunc;
5914 Elf_Internal_Sym *isym;
5916 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5921 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5925 vpp = &elf_section_data (s)->local_dynrel;
5926 head = (struct ppc_dyn_relocs **) vpp;
5927 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5929 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5931 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5933 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5939 p->ifunc = is_ifunc;
5955 /* Merge backend specific data from an object file to the output
5956 object file when linking. */
5959 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5961 unsigned long iflags, oflags;
5963 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5966 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5969 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5972 iflags = elf_elfheader (ibfd)->e_flags;
5973 oflags = elf_elfheader (obfd)->e_flags;
5975 if (iflags & ~EF_PPC64_ABI)
5977 (*_bfd_error_handler)
5978 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5979 bfd_set_error (bfd_error_bad_value);
5982 else if (iflags != oflags && iflags != 0)
5984 (*_bfd_error_handler)
5985 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5986 ibfd, iflags, oflags);
5987 bfd_set_error (bfd_error_bad_value);
5991 /* Merge Tag_compatibility attributes and any common GNU ones. */
5992 _bfd_elf_merge_object_attributes (ibfd, obfd);
5998 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6000 /* Print normal ELF private data. */
6001 _bfd_elf_print_private_bfd_data (abfd, ptr);
6003 if (elf_elfheader (abfd)->e_flags != 0)
6007 /* xgettext:c-format */
6008 fprintf (file, _("private flags = 0x%lx:"),
6009 elf_elfheader (abfd)->e_flags);
6011 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6012 fprintf (file, _(" [abiv%ld]"),
6013 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6020 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6021 of the code entry point, and its section, which must be in the same
6022 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6025 opd_entry_value (asection *opd_sec,
6027 asection **code_sec,
6029 bfd_boolean in_code_sec)
6031 bfd *opd_bfd = opd_sec->owner;
6032 Elf_Internal_Rela *relocs;
6033 Elf_Internal_Rela *lo, *hi, *look;
6036 /* No relocs implies we are linking a --just-symbols object, or looking
6037 at a final linked executable with addr2line or somesuch. */
6038 if (opd_sec->reloc_count == 0)
6040 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6042 if (contents == NULL)
6044 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6045 return (bfd_vma) -1;
6046 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6049 /* PR 17512: file: 64b9dfbb. */
6050 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6051 return (bfd_vma) -1;
6053 val = bfd_get_64 (opd_bfd, contents + offset);
6054 if (code_sec != NULL)
6056 asection *sec, *likely = NULL;
6062 && val < sec->vma + sec->size)
6068 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6070 && (sec->flags & SEC_LOAD) != 0
6071 && (sec->flags & SEC_ALLOC) != 0)
6076 if (code_off != NULL)
6077 *code_off = val - likely->vma;
6083 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6085 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6087 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6088 /* PR 17512: file: df8e1fd6. */
6090 return (bfd_vma) -1;
6092 /* Go find the opd reloc at the sym address. */
6094 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6098 look = lo + (hi - lo) / 2;
6099 if (look->r_offset < offset)
6101 else if (look->r_offset > offset)
6105 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6107 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6108 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6110 unsigned long symndx = ELF64_R_SYM (look->r_info);
6111 asection *sec = NULL;
6113 if (symndx >= symtab_hdr->sh_info
6114 && elf_sym_hashes (opd_bfd) != NULL)
6116 struct elf_link_hash_entry **sym_hashes;
6117 struct elf_link_hash_entry *rh;
6119 sym_hashes = elf_sym_hashes (opd_bfd);
6120 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6123 rh = elf_follow_link (rh);
6124 if (rh->root.type != bfd_link_hash_defined
6125 && rh->root.type != bfd_link_hash_defweak)
6127 if (rh->root.u.def.section->owner == opd_bfd)
6129 val = rh->root.u.def.value;
6130 sec = rh->root.u.def.section;
6137 Elf_Internal_Sym *sym;
6139 if (symndx < symtab_hdr->sh_info)
6141 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6144 size_t symcnt = symtab_hdr->sh_info;
6145 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6150 symtab_hdr->contents = (bfd_byte *) sym;
6156 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6162 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6165 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6166 val = sym->st_value;
6169 val += look->r_addend;
6170 if (code_off != NULL)
6172 if (code_sec != NULL)
6174 if (in_code_sec && *code_sec != sec)
6179 if (sec->output_section != NULL)
6180 val += sec->output_section->vma + sec->output_offset;
6189 /* If the ELF symbol SYM might be a function in SEC, return the
6190 function size and set *CODE_OFF to the function's entry point,
6191 otherwise return zero. */
6193 static bfd_size_type
6194 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6199 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6200 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6204 if (!(sym->flags & BSF_SYNTHETIC))
6205 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6207 if (strcmp (sym->section->name, ".opd") == 0)
6209 struct _opd_sec_data *opd = get_opd_info (sym->section);
6210 bfd_vma symval = sym->value;
6213 && opd->adjust != NULL
6214 && elf_section_data (sym->section)->relocs != NULL)
6216 /* opd_entry_value will use cached relocs that have been
6217 adjusted, but with raw symbols. That means both local
6218 and global symbols need adjusting. */
6219 long adjust = opd->adjust[OPD_NDX (symval)];
6225 if (opd_entry_value (sym->section, symval,
6226 &sec, code_off, TRUE) == (bfd_vma) -1)
6228 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6229 symbol. This size has nothing to do with the code size of the
6230 function, which is what we're supposed to return, but the
6231 code size isn't available without looking up the dot-sym.
6232 However, doing that would be a waste of time particularly
6233 since elf_find_function will look at the dot-sym anyway.
6234 Now, elf_find_function will keep the largest size of any
6235 function sym found at the code address of interest, so return
6236 1 here to avoid it incorrectly caching a larger function size
6237 for a small function. This does mean we return the wrong
6238 size for a new-ABI function of size 24, but all that does is
6239 disable caching for such functions. */
6245 if (sym->section != sec)
6247 *code_off = sym->value;
6254 /* Return true if symbol is defined in a regular object file. */
6257 is_static_defined (struct elf_link_hash_entry *h)
6259 return ((h->root.type == bfd_link_hash_defined
6260 || h->root.type == bfd_link_hash_defweak)
6261 && h->root.u.def.section != NULL
6262 && h->root.u.def.section->output_section != NULL);
6265 /* If FDH is a function descriptor symbol, return the associated code
6266 entry symbol if it is defined. Return NULL otherwise. */
6268 static struct ppc_link_hash_entry *
6269 defined_code_entry (struct ppc_link_hash_entry *fdh)
6271 if (fdh->is_func_descriptor)
6273 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6274 if (fh->elf.root.type == bfd_link_hash_defined
6275 || fh->elf.root.type == bfd_link_hash_defweak)
6281 /* If FH is a function code entry symbol, return the associated
6282 function descriptor symbol if it is defined. Return NULL otherwise. */
6284 static struct ppc_link_hash_entry *
6285 defined_func_desc (struct ppc_link_hash_entry *fh)
6288 && fh->oh->is_func_descriptor)
6290 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6291 if (fdh->elf.root.type == bfd_link_hash_defined
6292 || fdh->elf.root.type == bfd_link_hash_defweak)
6298 /* Mark all our entry sym sections, both opd and code section. */
6301 ppc64_elf_gc_keep (struct bfd_link_info *info)
6303 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6304 struct bfd_sym_chain *sym;
6309 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6311 struct ppc_link_hash_entry *eh, *fh;
6314 eh = (struct ppc_link_hash_entry *)
6315 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6318 if (eh->elf.root.type != bfd_link_hash_defined
6319 && eh->elf.root.type != bfd_link_hash_defweak)
6322 fh = defined_code_entry (eh);
6325 sec = fh->elf.root.u.def.section;
6326 sec->flags |= SEC_KEEP;
6328 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6329 && opd_entry_value (eh->elf.root.u.def.section,
6330 eh->elf.root.u.def.value,
6331 &sec, NULL, FALSE) != (bfd_vma) -1)
6332 sec->flags |= SEC_KEEP;
6334 sec = eh->elf.root.u.def.section;
6335 sec->flags |= SEC_KEEP;
6339 /* Mark sections containing dynamically referenced symbols. When
6340 building shared libraries, we must assume that any visible symbol is
6344 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6346 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6347 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6348 struct ppc_link_hash_entry *fdh;
6349 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6351 /* Dynamic linking info is on the func descriptor sym. */
6352 fdh = defined_func_desc (eh);
6356 if ((eh->elf.root.type == bfd_link_hash_defined
6357 || eh->elf.root.type == bfd_link_hash_defweak)
6358 && (eh->elf.ref_dynamic
6359 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6360 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6361 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6362 && (!bfd_link_executable (info)
6363 || info->export_dynamic
6366 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6367 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6368 || !bfd_hide_sym_by_version (info->version_info,
6369 eh->elf.root.root.string)))))
6372 struct ppc_link_hash_entry *fh;
6374 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6376 /* Function descriptor syms cause the associated
6377 function code sym section to be marked. */
6378 fh = defined_code_entry (eh);
6381 code_sec = fh->elf.root.u.def.section;
6382 code_sec->flags |= SEC_KEEP;
6384 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6385 && opd_entry_value (eh->elf.root.u.def.section,
6386 eh->elf.root.u.def.value,
6387 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6388 code_sec->flags |= SEC_KEEP;
6394 /* Return the section that should be marked against GC for a given
6398 ppc64_elf_gc_mark_hook (asection *sec,
6399 struct bfd_link_info *info,
6400 Elf_Internal_Rela *rel,
6401 struct elf_link_hash_entry *h,
6402 Elf_Internal_Sym *sym)
6406 /* Syms return NULL if we're marking .opd, so we avoid marking all
6407 function sections, as all functions are referenced in .opd. */
6409 if (get_opd_info (sec) != NULL)
6414 enum elf_ppc64_reloc_type r_type;
6415 struct ppc_link_hash_entry *eh, *fh, *fdh;
6417 r_type = ELF64_R_TYPE (rel->r_info);
6420 case R_PPC64_GNU_VTINHERIT:
6421 case R_PPC64_GNU_VTENTRY:
6425 switch (h->root.type)
6427 case bfd_link_hash_defined:
6428 case bfd_link_hash_defweak:
6429 eh = (struct ppc_link_hash_entry *) h;
6430 fdh = defined_func_desc (eh);
6434 /* Function descriptor syms cause the associated
6435 function code sym section to be marked. */
6436 fh = defined_code_entry (eh);
6439 /* They also mark their opd section. */
6440 eh->elf.root.u.def.section->gc_mark = 1;
6442 rsec = fh->elf.root.u.def.section;
6444 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6445 && opd_entry_value (eh->elf.root.u.def.section,
6446 eh->elf.root.u.def.value,
6447 &rsec, NULL, FALSE) != (bfd_vma) -1)
6448 eh->elf.root.u.def.section->gc_mark = 1;
6450 rsec = h->root.u.def.section;
6453 case bfd_link_hash_common:
6454 rsec = h->root.u.c.p->section;
6458 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6464 struct _opd_sec_data *opd;
6466 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6467 opd = get_opd_info (rsec);
6468 if (opd != NULL && opd->func_sec != NULL)
6472 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6479 /* Update the .got, .plt. and dynamic reloc reference counts for the
6480 section being removed. */
6483 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6484 asection *sec, const Elf_Internal_Rela *relocs)
6486 struct ppc_link_hash_table *htab;
6487 Elf_Internal_Shdr *symtab_hdr;
6488 struct elf_link_hash_entry **sym_hashes;
6489 struct got_entry **local_got_ents;
6490 const Elf_Internal_Rela *rel, *relend;
6492 if (bfd_link_relocatable (info))
6495 if ((sec->flags & SEC_ALLOC) == 0)
6498 elf_section_data (sec)->local_dynrel = NULL;
6500 htab = ppc_hash_table (info);
6504 symtab_hdr = &elf_symtab_hdr (abfd);
6505 sym_hashes = elf_sym_hashes (abfd);
6506 local_got_ents = elf_local_got_ents (abfd);
6508 relend = relocs + sec->reloc_count;
6509 for (rel = relocs; rel < relend; rel++)
6511 unsigned long r_symndx;
6512 enum elf_ppc64_reloc_type r_type;
6513 struct elf_link_hash_entry *h = NULL;
6514 struct plt_entry **plt_list;
6515 unsigned char tls_type = 0;
6517 r_symndx = ELF64_R_SYM (rel->r_info);
6518 r_type = ELF64_R_TYPE (rel->r_info);
6519 if (r_symndx >= symtab_hdr->sh_info)
6521 struct ppc_link_hash_entry *eh;
6522 struct elf_dyn_relocs **pp;
6523 struct elf_dyn_relocs *p;
6525 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6526 h = elf_follow_link (h);
6527 eh = (struct ppc_link_hash_entry *) h;
6529 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6532 /* Everything must go for SEC. */
6540 case R_PPC64_GOT_TLSLD16:
6541 case R_PPC64_GOT_TLSLD16_LO:
6542 case R_PPC64_GOT_TLSLD16_HI:
6543 case R_PPC64_GOT_TLSLD16_HA:
6544 tls_type = TLS_TLS | TLS_LD;
6547 case R_PPC64_GOT_TLSGD16:
6548 case R_PPC64_GOT_TLSGD16_LO:
6549 case R_PPC64_GOT_TLSGD16_HI:
6550 case R_PPC64_GOT_TLSGD16_HA:
6551 tls_type = TLS_TLS | TLS_GD;
6554 case R_PPC64_GOT_TPREL16_DS:
6555 case R_PPC64_GOT_TPREL16_LO_DS:
6556 case R_PPC64_GOT_TPREL16_HI:
6557 case R_PPC64_GOT_TPREL16_HA:
6558 tls_type = TLS_TLS | TLS_TPREL;
6561 case R_PPC64_GOT_DTPREL16_DS:
6562 case R_PPC64_GOT_DTPREL16_LO_DS:
6563 case R_PPC64_GOT_DTPREL16_HI:
6564 case R_PPC64_GOT_DTPREL16_HA:
6565 tls_type = TLS_TLS | TLS_DTPREL;
6569 case R_PPC64_GOT16_DS:
6570 case R_PPC64_GOT16_HA:
6571 case R_PPC64_GOT16_HI:
6572 case R_PPC64_GOT16_LO:
6573 case R_PPC64_GOT16_LO_DS:
6576 struct got_entry *ent;
6581 ent = local_got_ents[r_symndx];
6583 for (; ent != NULL; ent = ent->next)
6584 if (ent->addend == rel->r_addend
6585 && ent->owner == abfd
6586 && ent->tls_type == tls_type)
6590 if (ent->got.refcount > 0)
6591 ent->got.refcount -= 1;
6595 case R_PPC64_PLT16_HA:
6596 case R_PPC64_PLT16_HI:
6597 case R_PPC64_PLT16_LO:
6601 case R_PPC64_REL14_BRNTAKEN:
6602 case R_PPC64_REL14_BRTAKEN:
6606 plt_list = &h->plt.plist;
6607 else if (local_got_ents != NULL)
6609 struct plt_entry **local_plt = (struct plt_entry **)
6610 (local_got_ents + symtab_hdr->sh_info);
6611 unsigned char *local_got_tls_masks = (unsigned char *)
6612 (local_plt + symtab_hdr->sh_info);
6613 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6614 plt_list = local_plt + r_symndx;
6618 struct plt_entry *ent;
6620 for (ent = *plt_list; ent != NULL; ent = ent->next)
6621 if (ent->addend == rel->r_addend)
6623 if (ent != NULL && ent->plt.refcount > 0)
6624 ent->plt.refcount -= 1;
6635 /* The maximum size of .sfpr. */
6636 #define SFPR_MAX (218*4)
6638 struct sfpr_def_parms
6640 const char name[12];
6641 unsigned char lo, hi;
6642 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6643 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6646 /* Auto-generate _save*, _rest* functions in .sfpr.
6647 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6651 sfpr_define (struct bfd_link_info *info,
6652 const struct sfpr_def_parms *parm,
6655 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6657 size_t len = strlen (parm->name);
6658 bfd_boolean writing = FALSE;
6664 memcpy (sym, parm->name, len);
6667 for (i = parm->lo; i <= parm->hi; i++)
6669 struct ppc_link_hash_entry *h;
6671 sym[len + 0] = i / 10 + '0';
6672 sym[len + 1] = i % 10 + '0';
6673 h = (struct ppc_link_hash_entry *)
6674 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6675 if (stub_sec != NULL)
6678 && h->elf.root.type == bfd_link_hash_defined
6679 && h->elf.root.u.def.section == htab->sfpr)
6681 struct elf_link_hash_entry *s;
6683 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6684 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6687 if (s->root.type == bfd_link_hash_new
6688 || (s->root.type = bfd_link_hash_defined
6689 && s->root.u.def.section == stub_sec))
6691 s->root.type = bfd_link_hash_defined;
6692 s->root.u.def.section = stub_sec;
6693 s->root.u.def.value = (stub_sec->size
6694 + h->elf.root.u.def.value);
6697 s->ref_regular_nonweak = 1;
6698 s->forced_local = 1;
6700 s->root.linker_def = 1;
6708 if (!h->elf.def_regular)
6710 h->elf.root.type = bfd_link_hash_defined;
6711 h->elf.root.u.def.section = htab->sfpr;
6712 h->elf.root.u.def.value = htab->sfpr->size;
6713 h->elf.type = STT_FUNC;
6714 h->elf.def_regular = 1;
6716 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6718 if (htab->sfpr->contents == NULL)
6720 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6721 if (htab->sfpr->contents == NULL)
6728 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6730 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6732 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6733 htab->sfpr->size = p - htab->sfpr->contents;
6741 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6743 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6748 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6750 p = savegpr0 (abfd, p, r);
6751 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6753 bfd_put_32 (abfd, BLR, p);
6758 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6760 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6765 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6767 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6769 p = restgpr0 (abfd, p, r);
6770 bfd_put_32 (abfd, MTLR_R0, p);
6774 p = restgpr0 (abfd, p, 30);
6775 p = restgpr0 (abfd, p, 31);
6777 bfd_put_32 (abfd, BLR, p);
6782 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6784 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6789 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6791 p = savegpr1 (abfd, p, r);
6792 bfd_put_32 (abfd, BLR, p);
6797 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6799 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6804 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6806 p = restgpr1 (abfd, p, r);
6807 bfd_put_32 (abfd, BLR, p);
6812 savefpr (bfd *abfd, bfd_byte *p, int r)
6814 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6819 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6821 p = savefpr (abfd, p, r);
6822 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6824 bfd_put_32 (abfd, BLR, p);
6829 restfpr (bfd *abfd, bfd_byte *p, int r)
6831 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6836 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6838 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6840 p = restfpr (abfd, p, r);
6841 bfd_put_32 (abfd, MTLR_R0, p);
6845 p = restfpr (abfd, p, 30);
6846 p = restfpr (abfd, p, 31);
6848 bfd_put_32 (abfd, BLR, p);
6853 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6855 p = savefpr (abfd, p, r);
6856 bfd_put_32 (abfd, BLR, p);
6861 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6863 p = restfpr (abfd, p, r);
6864 bfd_put_32 (abfd, BLR, p);
6869 savevr (bfd *abfd, bfd_byte *p, int r)
6871 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6873 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6878 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6880 p = savevr (abfd, p, r);
6881 bfd_put_32 (abfd, BLR, p);
6886 restvr (bfd *abfd, bfd_byte *p, int r)
6888 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6890 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6895 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6897 p = restvr (abfd, p, r);
6898 bfd_put_32 (abfd, BLR, p);
6902 /* Called via elf_link_hash_traverse to transfer dynamic linking
6903 information on function code symbol entries to their corresponding
6904 function descriptor symbol entries. */
6907 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6909 struct bfd_link_info *info;
6910 struct ppc_link_hash_table *htab;
6911 struct plt_entry *ent;
6912 struct ppc_link_hash_entry *fh;
6913 struct ppc_link_hash_entry *fdh;
6914 bfd_boolean force_local;
6916 fh = (struct ppc_link_hash_entry *) h;
6917 if (fh->elf.root.type == bfd_link_hash_indirect)
6921 htab = ppc_hash_table (info);
6925 /* Resolve undefined references to dot-symbols as the value
6926 in the function descriptor, if we have one in a regular object.
6927 This is to satisfy cases like ".quad .foo". Calls to functions
6928 in dynamic objects are handled elsewhere. */
6929 if (fh->elf.root.type == bfd_link_hash_undefweak
6930 && fh->was_undefined
6931 && (fdh = defined_func_desc (fh)) != NULL
6932 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6933 && opd_entry_value (fdh->elf.root.u.def.section,
6934 fdh->elf.root.u.def.value,
6935 &fh->elf.root.u.def.section,
6936 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6938 fh->elf.root.type = fdh->elf.root.type;
6939 fh->elf.forced_local = 1;
6940 fh->elf.def_regular = fdh->elf.def_regular;
6941 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6944 /* If this is a function code symbol, transfer dynamic linking
6945 information to the function descriptor symbol. */
6949 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6950 if (ent->plt.refcount > 0)
6953 || fh->elf.root.root.string[0] != '.'
6954 || fh->elf.root.root.string[1] == '\0')
6957 /* Find the corresponding function descriptor symbol. Create it
6958 as undefined if necessary. */
6960 fdh = lookup_fdh (fh, htab);
6962 && !bfd_link_executable (info)
6963 && (fh->elf.root.type == bfd_link_hash_undefined
6964 || fh->elf.root.type == bfd_link_hash_undefweak))
6966 fdh = make_fdh (info, fh);
6971 /* Fake function descriptors are made undefweak. If the function
6972 code symbol is strong undefined, make the fake sym the same.
6973 If the function code symbol is defined, then force the fake
6974 descriptor local; We can't support overriding of symbols in a
6975 shared library on a fake descriptor. */
6979 && fdh->elf.root.type == bfd_link_hash_undefweak)
6981 if (fh->elf.root.type == bfd_link_hash_undefined)
6983 fdh->elf.root.type = bfd_link_hash_undefined;
6984 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6986 else if (fh->elf.root.type == bfd_link_hash_defined
6987 || fh->elf.root.type == bfd_link_hash_defweak)
6989 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6994 && !fdh->elf.forced_local
6995 && (!bfd_link_executable (info)
6996 || fdh->elf.def_dynamic
6997 || fdh->elf.ref_dynamic
6998 || (fdh->elf.root.type == bfd_link_hash_undefweak
6999 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
7001 if (fdh->elf.dynindx == -1)
7002 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
7004 fdh->elf.ref_regular |= fh->elf.ref_regular;
7005 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
7006 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7007 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
7008 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
7010 move_plt_plist (fh, fdh);
7011 fdh->elf.needs_plt = 1;
7013 fdh->is_func_descriptor = 1;
7018 /* Now that the info is on the function descriptor, clear the
7019 function code sym info. Any function code syms for which we
7020 don't have a definition in a regular file, we force local.
7021 This prevents a shared library from exporting syms that have
7022 been imported from another library. Function code syms that
7023 are really in the library we must leave global to prevent the
7024 linker dragging in a definition from a static library. */
7025 force_local = (!fh->elf.def_regular
7027 || !fdh->elf.def_regular
7028 || fdh->elf.forced_local);
7029 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7034 static const struct sfpr_def_parms save_res_funcs[] =
7036 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7037 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7038 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7039 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7040 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7041 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7042 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7043 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7044 { "._savef", 14, 31, savefpr, savefpr1_tail },
7045 { "._restf", 14, 31, restfpr, restfpr1_tail },
7046 { "_savevr_", 20, 31, savevr, savevr_tail },
7047 { "_restvr_", 20, 31, restvr, restvr_tail }
7050 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7051 this hook to a) provide some gcc support functions, and b) transfer
7052 dynamic linking information gathered so far on function code symbol
7053 entries, to their corresponding function descriptor symbol entries. */
7056 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7057 struct bfd_link_info *info)
7059 struct ppc_link_hash_table *htab;
7061 htab = ppc_hash_table (info);
7065 /* Provide any missing _save* and _rest* functions. */
7066 if (htab->sfpr != NULL)
7070 htab->sfpr->size = 0;
7071 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7072 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7074 if (htab->sfpr->size == 0)
7075 htab->sfpr->flags |= SEC_EXCLUDE;
7078 if (bfd_link_relocatable (info))
7081 if (htab->elf.hgot != NULL)
7083 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7084 /* Make .TOC. defined so as to prevent it being made dynamic.
7085 The wrong value here is fixed later in ppc64_elf_set_toc. */
7086 if (!htab->elf.hgot->def_regular
7087 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7089 htab->elf.hgot->root.type = bfd_link_hash_defined;
7090 htab->elf.hgot->root.u.def.value = 0;
7091 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7092 htab->elf.hgot->def_regular = 1;
7093 htab->elf.hgot->root.linker_def = 1;
7095 htab->elf.hgot->type = STT_OBJECT;
7096 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7100 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7105 /* Return true if we have dynamic relocs that apply to read-only sections. */
7108 readonly_dynrelocs (struct elf_link_hash_entry *h)
7110 struct ppc_link_hash_entry *eh;
7111 struct elf_dyn_relocs *p;
7113 eh = (struct ppc_link_hash_entry *) h;
7114 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7116 asection *s = p->sec->output_section;
7118 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7124 /* Adjust a symbol defined by a dynamic object and referenced by a
7125 regular object. The current definition is in some section of the
7126 dynamic object, but we're not including those sections. We have to
7127 change the definition to something the rest of the link can
7131 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7132 struct elf_link_hash_entry *h)
7134 struct ppc_link_hash_table *htab;
7137 htab = ppc_hash_table (info);
7141 /* Deal with function syms. */
7142 if (h->type == STT_FUNC
7143 || h->type == STT_GNU_IFUNC
7146 /* Clear procedure linkage table information for any symbol that
7147 won't need a .plt entry. */
7148 struct plt_entry *ent;
7149 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7150 if (ent->plt.refcount > 0)
7153 || (h->type != STT_GNU_IFUNC
7154 && (SYMBOL_CALLS_LOCAL (info, h)
7155 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7156 && h->root.type == bfd_link_hash_undefweak)))
7157 || ((struct ppc_link_hash_entry *) h)->save_res)
7159 h->plt.plist = NULL;
7161 h->pointer_equality_needed = 0;
7163 else if (abiversion (info->output_bfd) == 2)
7165 /* Taking a function's address in a read/write section
7166 doesn't require us to define the function symbol in the
7167 executable on a global entry stub. A dynamic reloc can
7169 if (h->pointer_equality_needed
7170 && h->type != STT_GNU_IFUNC
7171 && !readonly_dynrelocs (h))
7173 h->pointer_equality_needed = 0;
7177 /* After adjust_dynamic_symbol, non_got_ref set in the
7178 non-shared case means that we have allocated space in
7179 .dynbss for the symbol and thus dyn_relocs for this
7180 symbol should be discarded.
7181 If we get here we know we are making a PLT entry for this
7182 symbol, and in an executable we'd normally resolve
7183 relocations against this symbol to the PLT entry. Allow
7184 dynamic relocs if the reference is weak, and the dynamic
7185 relocs will not cause text relocation. */
7186 else if (!h->ref_regular_nonweak
7188 && h->type != STT_GNU_IFUNC
7189 && !readonly_dynrelocs (h))
7192 /* If making a plt entry, then we don't need copy relocs. */
7197 h->plt.plist = NULL;
7199 /* If this is a weak symbol, and there is a real definition, the
7200 processor independent code will have arranged for us to see the
7201 real definition first, and we can just use the same value. */
7202 if (h->u.weakdef != NULL)
7204 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7205 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7206 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7207 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7208 if (ELIMINATE_COPY_RELOCS)
7209 h->non_got_ref = h->u.weakdef->non_got_ref;
7213 /* If we are creating a shared library, we must presume that the
7214 only references to the symbol are via the global offset table.
7215 For such cases we need not do anything here; the relocations will
7216 be handled correctly by relocate_section. */
7217 if (bfd_link_pic (info))
7220 /* If there are no references to this symbol that do not use the
7221 GOT, we don't need to generate a copy reloc. */
7222 if (!h->non_got_ref)
7225 /* Don't generate a copy reloc for symbols defined in the executable. */
7226 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7228 /* If -z nocopyreloc was given, don't generate them either. */
7229 || info->nocopyreloc
7231 /* If we didn't find any dynamic relocs in read-only sections, then
7232 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7233 || (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7235 /* Protected variables do not work with .dynbss. The copy in
7236 .dynbss won't be used by the shared library with the protected
7237 definition for the variable. Text relocations are preferable
7238 to an incorrect program. */
7239 || h->protected_def)
7245 if (h->plt.plist != NULL)
7247 /* We should never get here, but unfortunately there are versions
7248 of gcc out there that improperly (for this ABI) put initialized
7249 function pointers, vtable refs and suchlike in read-only
7250 sections. Allow them to proceed, but warn that this might
7251 break at runtime. */
7252 info->callbacks->einfo
7253 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7254 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7255 h->root.root.string);
7258 /* This is a reference to a symbol defined by a dynamic object which
7259 is not a function. */
7261 /* We must allocate the symbol in our .dynbss section, which will
7262 become part of the .bss section of the executable. There will be
7263 an entry for this symbol in the .dynsym section. The dynamic
7264 object will contain position independent code, so all references
7265 from the dynamic object to this symbol will go through the global
7266 offset table. The dynamic linker will use the .dynsym entry to
7267 determine the address it must put in the global offset table, so
7268 both the dynamic object and the regular object will refer to the
7269 same memory location for the variable. */
7271 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7272 to copy the initial value out of the dynamic object and into the
7273 runtime process image. We need to remember the offset into the
7274 .rela.bss section we are going to use. */
7275 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7277 htab->relbss->size += sizeof (Elf64_External_Rela);
7283 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7286 /* If given a function descriptor symbol, hide both the function code
7287 sym and the descriptor. */
7289 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7290 struct elf_link_hash_entry *h,
7291 bfd_boolean force_local)
7293 struct ppc_link_hash_entry *eh;
7294 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7296 eh = (struct ppc_link_hash_entry *) h;
7297 if (eh->is_func_descriptor)
7299 struct ppc_link_hash_entry *fh = eh->oh;
7304 struct ppc_link_hash_table *htab;
7307 /* We aren't supposed to use alloca in BFD because on
7308 systems which do not have alloca the version in libiberty
7309 calls xmalloc, which might cause the program to crash
7310 when it runs out of memory. This function doesn't have a
7311 return status, so there's no way to gracefully return an
7312 error. So cheat. We know that string[-1] can be safely
7313 accessed; It's either a string in an ELF string table,
7314 or allocated in an objalloc structure. */
7316 p = eh->elf.root.root.string - 1;
7319 htab = ppc_hash_table (info);
7323 fh = (struct ppc_link_hash_entry *)
7324 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7327 /* Unfortunately, if it so happens that the string we were
7328 looking for was allocated immediately before this string,
7329 then we overwrote the string terminator. That's the only
7330 reason the lookup should fail. */
7333 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7334 while (q >= eh->elf.root.root.string && *q == *p)
7336 if (q < eh->elf.root.root.string && *p == '.')
7337 fh = (struct ppc_link_hash_entry *)
7338 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7347 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7352 get_sym_h (struct elf_link_hash_entry **hp,
7353 Elf_Internal_Sym **symp,
7355 unsigned char **tls_maskp,
7356 Elf_Internal_Sym **locsymsp,
7357 unsigned long r_symndx,
7360 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7362 if (r_symndx >= symtab_hdr->sh_info)
7364 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7365 struct elf_link_hash_entry *h;
7367 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7368 h = elf_follow_link (h);
7376 if (symsecp != NULL)
7378 asection *symsec = NULL;
7379 if (h->root.type == bfd_link_hash_defined
7380 || h->root.type == bfd_link_hash_defweak)
7381 symsec = h->root.u.def.section;
7385 if (tls_maskp != NULL)
7387 struct ppc_link_hash_entry *eh;
7389 eh = (struct ppc_link_hash_entry *) h;
7390 *tls_maskp = &eh->tls_mask;
7395 Elf_Internal_Sym *sym;
7396 Elf_Internal_Sym *locsyms = *locsymsp;
7398 if (locsyms == NULL)
7400 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7401 if (locsyms == NULL)
7402 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7403 symtab_hdr->sh_info,
7404 0, NULL, NULL, NULL);
7405 if (locsyms == NULL)
7407 *locsymsp = locsyms;
7409 sym = locsyms + r_symndx;
7417 if (symsecp != NULL)
7418 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7420 if (tls_maskp != NULL)
7422 struct got_entry **lgot_ents;
7423 unsigned char *tls_mask;
7426 lgot_ents = elf_local_got_ents (ibfd);
7427 if (lgot_ents != NULL)
7429 struct plt_entry **local_plt = (struct plt_entry **)
7430 (lgot_ents + symtab_hdr->sh_info);
7431 unsigned char *lgot_masks = (unsigned char *)
7432 (local_plt + symtab_hdr->sh_info);
7433 tls_mask = &lgot_masks[r_symndx];
7435 *tls_maskp = tls_mask;
7441 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7442 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7443 type suitable for optimization, and 1 otherwise. */
7446 get_tls_mask (unsigned char **tls_maskp,
7447 unsigned long *toc_symndx,
7448 bfd_vma *toc_addend,
7449 Elf_Internal_Sym **locsymsp,
7450 const Elf_Internal_Rela *rel,
7453 unsigned long r_symndx;
7455 struct elf_link_hash_entry *h;
7456 Elf_Internal_Sym *sym;
7460 r_symndx = ELF64_R_SYM (rel->r_info);
7461 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7464 if ((*tls_maskp != NULL && **tls_maskp != 0)
7466 || ppc64_elf_section_data (sec) == NULL
7467 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7470 /* Look inside a TOC section too. */
7473 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7474 off = h->root.u.def.value;
7477 off = sym->st_value;
7478 off += rel->r_addend;
7479 BFD_ASSERT (off % 8 == 0);
7480 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7481 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7482 if (toc_symndx != NULL)
7483 *toc_symndx = r_symndx;
7484 if (toc_addend != NULL)
7485 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7486 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7488 if ((h == NULL || is_static_defined (h))
7489 && (next_r == -1 || next_r == -2))
7494 /* Find (or create) an entry in the tocsave hash table. */
7496 static struct tocsave_entry *
7497 tocsave_find (struct ppc_link_hash_table *htab,
7498 enum insert_option insert,
7499 Elf_Internal_Sym **local_syms,
7500 const Elf_Internal_Rela *irela,
7503 unsigned long r_indx;
7504 struct elf_link_hash_entry *h;
7505 Elf_Internal_Sym *sym;
7506 struct tocsave_entry ent, *p;
7508 struct tocsave_entry **slot;
7510 r_indx = ELF64_R_SYM (irela->r_info);
7511 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7513 if (ent.sec == NULL || ent.sec->output_section == NULL)
7515 (*_bfd_error_handler)
7516 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7521 ent.offset = h->root.u.def.value;
7523 ent.offset = sym->st_value;
7524 ent.offset += irela->r_addend;
7526 hash = tocsave_htab_hash (&ent);
7527 slot = ((struct tocsave_entry **)
7528 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7534 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7543 /* Adjust all global syms defined in opd sections. In gcc generated
7544 code for the old ABI, these will already have been done. */
7547 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7549 struct ppc_link_hash_entry *eh;
7551 struct _opd_sec_data *opd;
7553 if (h->root.type == bfd_link_hash_indirect)
7556 if (h->root.type != bfd_link_hash_defined
7557 && h->root.type != bfd_link_hash_defweak)
7560 eh = (struct ppc_link_hash_entry *) h;
7561 if (eh->adjust_done)
7564 sym_sec = eh->elf.root.u.def.section;
7565 opd = get_opd_info (sym_sec);
7566 if (opd != NULL && opd->adjust != NULL)
7568 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7571 /* This entry has been deleted. */
7572 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7575 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7576 if (discarded_section (dsec))
7578 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7582 eh->elf.root.u.def.value = 0;
7583 eh->elf.root.u.def.section = dsec;
7586 eh->elf.root.u.def.value += adjust;
7587 eh->adjust_done = 1;
7592 /* Handles decrementing dynamic reloc counts for the reloc specified by
7593 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7594 have already been determined. */
7597 dec_dynrel_count (bfd_vma r_info,
7599 struct bfd_link_info *info,
7600 Elf_Internal_Sym **local_syms,
7601 struct elf_link_hash_entry *h,
7602 Elf_Internal_Sym *sym)
7604 enum elf_ppc64_reloc_type r_type;
7605 asection *sym_sec = NULL;
7607 /* Can this reloc be dynamic? This switch, and later tests here
7608 should be kept in sync with the code in check_relocs. */
7609 r_type = ELF64_R_TYPE (r_info);
7615 case R_PPC64_TPREL16:
7616 case R_PPC64_TPREL16_LO:
7617 case R_PPC64_TPREL16_HI:
7618 case R_PPC64_TPREL16_HA:
7619 case R_PPC64_TPREL16_DS:
7620 case R_PPC64_TPREL16_LO_DS:
7621 case R_PPC64_TPREL16_HIGH:
7622 case R_PPC64_TPREL16_HIGHA:
7623 case R_PPC64_TPREL16_HIGHER:
7624 case R_PPC64_TPREL16_HIGHERA:
7625 case R_PPC64_TPREL16_HIGHEST:
7626 case R_PPC64_TPREL16_HIGHESTA:
7627 if (!bfd_link_pic (info))
7630 case R_PPC64_TPREL64:
7631 case R_PPC64_DTPMOD64:
7632 case R_PPC64_DTPREL64:
7633 case R_PPC64_ADDR64:
7637 case R_PPC64_ADDR14:
7638 case R_PPC64_ADDR14_BRNTAKEN:
7639 case R_PPC64_ADDR14_BRTAKEN:
7640 case R_PPC64_ADDR16:
7641 case R_PPC64_ADDR16_DS:
7642 case R_PPC64_ADDR16_HA:
7643 case R_PPC64_ADDR16_HI:
7644 case R_PPC64_ADDR16_HIGH:
7645 case R_PPC64_ADDR16_HIGHA:
7646 case R_PPC64_ADDR16_HIGHER:
7647 case R_PPC64_ADDR16_HIGHERA:
7648 case R_PPC64_ADDR16_HIGHEST:
7649 case R_PPC64_ADDR16_HIGHESTA:
7650 case R_PPC64_ADDR16_LO:
7651 case R_PPC64_ADDR16_LO_DS:
7652 case R_PPC64_ADDR24:
7653 case R_PPC64_ADDR32:
7654 case R_PPC64_UADDR16:
7655 case R_PPC64_UADDR32:
7656 case R_PPC64_UADDR64:
7661 if (local_syms != NULL)
7663 unsigned long r_symndx;
7664 bfd *ibfd = sec->owner;
7666 r_symndx = ELF64_R_SYM (r_info);
7667 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7671 if ((bfd_link_pic (info)
7672 && (must_be_dyn_reloc (info, r_type)
7674 && (!SYMBOLIC_BIND (info, h)
7675 || h->root.type == bfd_link_hash_defweak
7676 || !h->def_regular))))
7677 || (ELIMINATE_COPY_RELOCS
7678 && !bfd_link_pic (info)
7680 && (h->root.type == bfd_link_hash_defweak
7681 || !h->def_regular)))
7688 struct elf_dyn_relocs *p;
7689 struct elf_dyn_relocs **pp;
7690 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7692 /* elf_gc_sweep may have already removed all dyn relocs associated
7693 with local syms for a given section. Also, symbol flags are
7694 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7695 report a dynreloc miscount. */
7696 if (*pp == NULL && info->gc_sections)
7699 while ((p = *pp) != NULL)
7703 if (!must_be_dyn_reloc (info, r_type))
7715 struct ppc_dyn_relocs *p;
7716 struct ppc_dyn_relocs **pp;
7718 bfd_boolean is_ifunc;
7720 if (local_syms == NULL)
7721 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7722 if (sym_sec == NULL)
7725 vpp = &elf_section_data (sym_sec)->local_dynrel;
7726 pp = (struct ppc_dyn_relocs **) vpp;
7728 if (*pp == NULL && info->gc_sections)
7731 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7732 while ((p = *pp) != NULL)
7734 if (p->sec == sec && p->ifunc == is_ifunc)
7745 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7747 bfd_set_error (bfd_error_bad_value);
7751 /* Remove unused Official Procedure Descriptor entries. Currently we
7752 only remove those associated with functions in discarded link-once
7753 sections, or weakly defined functions that have been overridden. It
7754 would be possible to remove many more entries for statically linked
7758 ppc64_elf_edit_opd (struct bfd_link_info *info)
7761 bfd_boolean some_edited = FALSE;
7762 asection *need_pad = NULL;
7763 struct ppc_link_hash_table *htab;
7765 htab = ppc_hash_table (info);
7769 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7772 Elf_Internal_Rela *relstart, *rel, *relend;
7773 Elf_Internal_Shdr *symtab_hdr;
7774 Elf_Internal_Sym *local_syms;
7775 struct _opd_sec_data *opd;
7776 bfd_boolean need_edit, add_aux_fields, broken;
7777 bfd_size_type cnt_16b = 0;
7779 if (!is_ppc64_elf (ibfd))
7782 sec = bfd_get_section_by_name (ibfd, ".opd");
7783 if (sec == NULL || sec->size == 0)
7786 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7789 if (sec->output_section == bfd_abs_section_ptr)
7792 /* Look through the section relocs. */
7793 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7797 symtab_hdr = &elf_symtab_hdr (ibfd);
7799 /* Read the relocations. */
7800 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7802 if (relstart == NULL)
7805 /* First run through the relocs to check they are sane, and to
7806 determine whether we need to edit this opd section. */
7810 relend = relstart + sec->reloc_count;
7811 for (rel = relstart; rel < relend; )
7813 enum elf_ppc64_reloc_type r_type;
7814 unsigned long r_symndx;
7816 struct elf_link_hash_entry *h;
7817 Elf_Internal_Sym *sym;
7820 /* .opd contains an array of 16 or 24 byte entries. We're
7821 only interested in the reloc pointing to a function entry
7823 offset = rel->r_offset;
7824 if (rel + 1 == relend
7825 || rel[1].r_offset != offset + 8)
7827 /* If someone messes with .opd alignment then after a
7828 "ld -r" we might have padding in the middle of .opd.
7829 Also, there's nothing to prevent someone putting
7830 something silly in .opd with the assembler. No .opd
7831 optimization for them! */
7833 (*_bfd_error_handler)
7834 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7839 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7840 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7842 (*_bfd_error_handler)
7843 (_("%B: unexpected reloc type %u in .opd section"),
7849 r_symndx = ELF64_R_SYM (rel->r_info);
7850 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7854 if (sym_sec == NULL || sym_sec->owner == NULL)
7856 const char *sym_name;
7858 sym_name = h->root.root.string;
7860 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7863 (*_bfd_error_handler)
7864 (_("%B: undefined sym `%s' in .opd section"),
7870 /* opd entries are always for functions defined in the
7871 current input bfd. If the symbol isn't defined in the
7872 input bfd, then we won't be using the function in this
7873 bfd; It must be defined in a linkonce section in another
7874 bfd, or is weak. It's also possible that we are
7875 discarding the function due to a linker script /DISCARD/,
7876 which we test for via the output_section. */
7877 if (sym_sec->owner != ibfd
7878 || sym_sec->output_section == bfd_abs_section_ptr)
7882 if (rel + 1 == relend
7883 || (rel + 2 < relend
7884 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7889 if (sec->size == offset + 24)
7894 if (sec->size == offset + 16)
7901 else if (rel + 1 < relend
7902 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7903 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7905 if (rel[0].r_offset == offset + 16)
7907 else if (rel[0].r_offset != offset + 24)
7914 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7916 if (!broken && (need_edit || add_aux_fields))
7918 Elf_Internal_Rela *write_rel;
7919 Elf_Internal_Shdr *rel_hdr;
7920 bfd_byte *rptr, *wptr;
7921 bfd_byte *new_contents;
7924 new_contents = NULL;
7925 amt = OPD_NDX (sec->size) * sizeof (long);
7926 opd = &ppc64_elf_section_data (sec)->u.opd;
7927 opd->adjust = bfd_zalloc (sec->owner, amt);
7928 if (opd->adjust == NULL)
7930 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7932 /* This seems a waste of time as input .opd sections are all
7933 zeros as generated by gcc, but I suppose there's no reason
7934 this will always be so. We might start putting something in
7935 the third word of .opd entries. */
7936 if ((sec->flags & SEC_IN_MEMORY) == 0)
7939 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7944 if (local_syms != NULL
7945 && symtab_hdr->contents != (unsigned char *) local_syms)
7947 if (elf_section_data (sec)->relocs != relstart)
7951 sec->contents = loc;
7952 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7955 elf_section_data (sec)->relocs = relstart;
7957 new_contents = sec->contents;
7960 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7961 if (new_contents == NULL)
7965 wptr = new_contents;
7966 rptr = sec->contents;
7967 write_rel = relstart;
7968 for (rel = relstart; rel < relend; )
7970 unsigned long r_symndx;
7972 struct elf_link_hash_entry *h;
7973 struct ppc_link_hash_entry *fdh = NULL;
7974 Elf_Internal_Sym *sym;
7976 Elf_Internal_Rela *next_rel;
7979 r_symndx = ELF64_R_SYM (rel->r_info);
7980 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7985 if (next_rel + 1 == relend
7986 || (next_rel + 2 < relend
7987 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
7990 /* See if the .opd entry is full 24 byte or
7991 16 byte (with fd_aux entry overlapped with next
7994 if (next_rel == relend)
7996 if (sec->size == rel->r_offset + 16)
7999 else if (next_rel->r_offset == rel->r_offset + 16)
8003 && h->root.root.string[0] == '.')
8005 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
8007 && fdh->elf.root.type != bfd_link_hash_defined
8008 && fdh->elf.root.type != bfd_link_hash_defweak)
8012 skip = (sym_sec->owner != ibfd
8013 || sym_sec->output_section == bfd_abs_section_ptr);
8016 if (fdh != NULL && sym_sec->owner == ibfd)
8018 /* Arrange for the function descriptor sym
8020 fdh->elf.root.u.def.value = 0;
8021 fdh->elf.root.u.def.section = sym_sec;
8023 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8025 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8030 if (!dec_dynrel_count (rel->r_info, sec, info,
8034 if (++rel == next_rel)
8037 r_symndx = ELF64_R_SYM (rel->r_info);
8038 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8045 /* We'll be keeping this opd entry. */
8050 /* Redefine the function descriptor symbol to
8051 this location in the opd section. It is
8052 necessary to update the value here rather
8053 than using an array of adjustments as we do
8054 for local symbols, because various places
8055 in the generic ELF code use the value
8056 stored in u.def.value. */
8057 fdh->elf.root.u.def.value = wptr - new_contents;
8058 fdh->adjust_done = 1;
8061 /* Local syms are a bit tricky. We could
8062 tweak them as they can be cached, but
8063 we'd need to look through the local syms
8064 for the function descriptor sym which we
8065 don't have at the moment. So keep an
8066 array of adjustments. */
8067 adjust = (wptr - new_contents) - (rptr - sec->contents);
8068 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8071 memcpy (wptr, rptr, opd_ent_size);
8072 wptr += opd_ent_size;
8073 if (add_aux_fields && opd_ent_size == 16)
8075 memset (wptr, '\0', 8);
8079 /* We need to adjust any reloc offsets to point to the
8081 for ( ; rel != next_rel; ++rel)
8083 rel->r_offset += adjust;
8084 if (write_rel != rel)
8085 memcpy (write_rel, rel, sizeof (*rel));
8090 rptr += opd_ent_size;
8093 sec->size = wptr - new_contents;
8094 sec->reloc_count = write_rel - relstart;
8097 free (sec->contents);
8098 sec->contents = new_contents;
8101 /* Fudge the header size too, as this is used later in
8102 elf_bfd_final_link if we are emitting relocs. */
8103 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8104 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8107 else if (elf_section_data (sec)->relocs != relstart)
8110 if (local_syms != NULL
8111 && symtab_hdr->contents != (unsigned char *) local_syms)
8113 if (!info->keep_memory)
8116 symtab_hdr->contents = (unsigned char *) local_syms;
8121 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8123 /* If we are doing a final link and the last .opd entry is just 16 byte
8124 long, add a 8 byte padding after it. */
8125 if (need_pad != NULL && !bfd_link_relocatable (info))
8129 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8131 BFD_ASSERT (need_pad->size > 0);
8133 p = bfd_malloc (need_pad->size + 8);
8137 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8138 p, 0, need_pad->size))
8141 need_pad->contents = p;
8142 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8146 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8150 need_pad->contents = p;
8153 memset (need_pad->contents + need_pad->size, 0, 8);
8154 need_pad->size += 8;
8160 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8163 ppc64_elf_tls_setup (struct bfd_link_info *info)
8165 struct ppc_link_hash_table *htab;
8167 htab = ppc_hash_table (info);
8171 if (abiversion (info->output_bfd) == 1)
8174 if (htab->params->no_multi_toc)
8175 htab->do_multi_toc = 0;
8176 else if (!htab->do_multi_toc)
8177 htab->params->no_multi_toc = 1;
8179 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8180 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8181 FALSE, FALSE, TRUE));
8182 /* Move dynamic linking info to the function descriptor sym. */
8183 if (htab->tls_get_addr != NULL)
8184 func_desc_adjust (&htab->tls_get_addr->elf, info);
8185 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8186 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8187 FALSE, FALSE, TRUE));
8188 if (htab->params->tls_get_addr_opt)
8190 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8192 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8193 FALSE, FALSE, TRUE);
8195 func_desc_adjust (opt, info);
8196 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8197 FALSE, FALSE, TRUE);
8199 && (opt_fd->root.type == bfd_link_hash_defined
8200 || opt_fd->root.type == bfd_link_hash_defweak))
8202 /* If glibc supports an optimized __tls_get_addr call stub,
8203 signalled by the presence of __tls_get_addr_opt, and we'll
8204 be calling __tls_get_addr via a plt call stub, then
8205 make __tls_get_addr point to __tls_get_addr_opt. */
8206 tga_fd = &htab->tls_get_addr_fd->elf;
8207 if (htab->elf.dynamic_sections_created
8209 && (tga_fd->type == STT_FUNC
8210 || tga_fd->needs_plt)
8211 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8212 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8213 && tga_fd->root.type == bfd_link_hash_undefweak)))
8215 struct plt_entry *ent;
8217 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8218 if (ent->plt.refcount > 0)
8222 tga_fd->root.type = bfd_link_hash_indirect;
8223 tga_fd->root.u.i.link = &opt_fd->root;
8224 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8225 opt_fd->forced_local = 0;
8226 if (opt_fd->dynindx != -1)
8228 /* Use __tls_get_addr_opt in dynamic relocations. */
8229 opt_fd->dynindx = -1;
8230 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8231 opt_fd->dynstr_index);
8232 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8235 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8236 tga = &htab->tls_get_addr->elf;
8237 if (opt != NULL && tga != NULL)
8239 tga->root.type = bfd_link_hash_indirect;
8240 tga->root.u.i.link = &opt->root;
8241 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8242 opt->forced_local = 0;
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 eh = (struct ppc_link_hash_entry *) h;
9553 /* Run through the TLS GD got entries first if we're changing them
9555 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9556 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9557 if (gent->got.refcount > 0
9558 && (gent->tls_type & TLS_GD) != 0)
9560 /* This was a GD entry that has been converted to TPREL. If
9561 there happens to be a TPREL entry we can use that one. */
9562 struct got_entry *ent;
9563 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9564 if (ent->got.refcount > 0
9565 && (ent->tls_type & TLS_TPREL) != 0
9566 && ent->addend == gent->addend
9567 && ent->owner == gent->owner)
9569 gent->got.refcount = 0;
9573 /* If not, then we'll be using our own TPREL entry. */
9574 if (gent->got.refcount != 0)
9575 gent->tls_type = TLS_TLS | TLS_TPREL;
9578 /* Remove any list entry that won't generate a word in the GOT before
9579 we call merge_got_entries. Otherwise we risk merging to empty
9581 pgent = &h->got.glist;
9582 while ((gent = *pgent) != NULL)
9583 if (gent->got.refcount > 0)
9585 if ((gent->tls_type & TLS_LD) != 0
9588 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9589 *pgent = gent->next;
9592 pgent = &gent->next;
9595 *pgent = gent->next;
9597 if (!htab->do_multi_toc)
9598 merge_got_entries (&h->got.glist);
9600 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9601 if (!gent->is_indirect)
9603 /* Make sure this symbol is output as a dynamic symbol.
9604 Undefined weak syms won't yet be marked as dynamic,
9605 nor will all TLS symbols. */
9606 if (h->dynindx == -1
9608 && h->type != STT_GNU_IFUNC
9609 && htab->elf.dynamic_sections_created)
9611 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9615 if (!is_ppc64_elf (gent->owner))
9618 allocate_got (h, info, gent);
9621 if (eh->dyn_relocs != NULL
9622 && (htab->elf.dynamic_sections_created
9623 || h->type == STT_GNU_IFUNC))
9625 /* In the shared -Bsymbolic case, discard space allocated for
9626 dynamic pc-relative relocs against symbols which turn out to
9627 be defined in regular objects. For the normal shared case,
9628 discard space for relocs that have become local due to symbol
9629 visibility changes. */
9631 if (bfd_link_pic (info))
9633 /* Relocs that use pc_count are those that appear on a call
9634 insn, or certain REL relocs (see must_be_dyn_reloc) that
9635 can be generated via assembly. We want calls to
9636 protected symbols to resolve directly to the function
9637 rather than going via the plt. If people want function
9638 pointer comparisons to work as expected then they should
9639 avoid writing weird assembly. */
9640 if (SYMBOL_CALLS_LOCAL (info, h))
9642 struct elf_dyn_relocs **pp;
9644 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9646 p->count -= p->pc_count;
9655 /* Also discard relocs on undefined weak syms with
9656 non-default visibility. */
9657 if (eh->dyn_relocs != NULL
9658 && h->root.type == bfd_link_hash_undefweak)
9660 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9661 eh->dyn_relocs = NULL;
9663 /* Make sure this symbol is output as a dynamic symbol.
9664 Undefined weak syms won't yet be marked as dynamic. */
9665 else if (h->dynindx == -1
9666 && !h->forced_local)
9668 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9673 else if (h->type == STT_GNU_IFUNC)
9675 if (!h->non_got_ref)
9676 eh->dyn_relocs = NULL;
9678 else if (ELIMINATE_COPY_RELOCS)
9680 /* For the non-shared case, discard space for relocs against
9681 symbols which turn out to need copy relocs or are not
9687 /* Make sure this symbol is output as a dynamic symbol.
9688 Undefined weak syms won't yet be marked as dynamic. */
9689 if (h->dynindx == -1
9690 && !h->forced_local)
9692 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9696 /* If that succeeded, we know we'll be keeping all the
9698 if (h->dynindx != -1)
9702 eh->dyn_relocs = NULL;
9707 /* Finally, allocate space. */
9708 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9710 asection *sreloc = elf_section_data (p->sec)->sreloc;
9711 if (eh->elf.type == STT_GNU_IFUNC)
9712 sreloc = htab->elf.irelplt;
9713 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9717 if ((htab->elf.dynamic_sections_created
9719 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
9720 || h->type == STT_GNU_IFUNC)
9722 struct plt_entry *pent;
9723 bfd_boolean doneone = FALSE;
9724 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9725 if (pent->plt.refcount > 0)
9727 if (!htab->elf.dynamic_sections_created
9728 || h->dynindx == -1)
9731 pent->plt.offset = s->size;
9732 s->size += PLT_ENTRY_SIZE (htab);
9733 s = htab->elf.irelplt;
9737 /* If this is the first .plt entry, make room for the special
9741 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9743 pent->plt.offset = s->size;
9745 /* Make room for this entry. */
9746 s->size += PLT_ENTRY_SIZE (htab);
9748 /* Make room for the .glink code. */
9751 s->size += GLINK_CALL_STUB_SIZE;
9754 /* We need bigger stubs past index 32767. */
9755 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9762 /* We also need to make an entry in the .rela.plt section. */
9763 s = htab->elf.srelplt;
9765 s->size += sizeof (Elf64_External_Rela);
9769 pent->plt.offset = (bfd_vma) -1;
9772 h->plt.plist = NULL;
9778 h->plt.plist = NULL;
9785 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9786 to set up space for global entry stubs. These are put in glink,
9787 after the branch table. */
9790 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9792 struct bfd_link_info *info;
9793 struct ppc_link_hash_table *htab;
9794 struct plt_entry *pent;
9797 if (h->root.type == bfd_link_hash_indirect)
9800 if (!h->pointer_equality_needed)
9807 htab = ppc_hash_table (info);
9812 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9813 if (pent->plt.offset != (bfd_vma) -1
9814 && pent->addend == 0)
9816 /* For ELFv2, if this symbol is not defined in a regular file
9817 and we are not generating a shared library or pie, then we
9818 need to define the symbol in the executable on a call stub.
9819 This is to avoid text relocations. */
9820 s->size = (s->size + 15) & -16;
9821 h->root.u.def.section = s;
9822 h->root.u.def.value = s->size;
9829 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9830 read-only sections. */
9833 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9835 if (h->root.type == bfd_link_hash_indirect)
9838 if (readonly_dynrelocs (h))
9840 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9842 /* Not an error, just cut short the traversal. */
9848 /* Set the sizes of the dynamic sections. */
9851 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9852 struct bfd_link_info *info)
9854 struct ppc_link_hash_table *htab;
9859 struct got_entry *first_tlsld;
9861 htab = ppc_hash_table (info);
9865 dynobj = htab->elf.dynobj;
9869 if (htab->elf.dynamic_sections_created)
9871 /* Set the contents of the .interp section to the interpreter. */
9872 if (bfd_link_executable (info) && !info->nointerp)
9874 s = bfd_get_linker_section (dynobj, ".interp");
9877 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9878 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9882 /* Set up .got offsets for local syms, and space for local dynamic
9884 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9886 struct got_entry **lgot_ents;
9887 struct got_entry **end_lgot_ents;
9888 struct plt_entry **local_plt;
9889 struct plt_entry **end_local_plt;
9890 unsigned char *lgot_masks;
9891 bfd_size_type locsymcount;
9892 Elf_Internal_Shdr *symtab_hdr;
9894 if (!is_ppc64_elf (ibfd))
9897 for (s = ibfd->sections; s != NULL; s = s->next)
9899 struct ppc_dyn_relocs *p;
9901 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9903 if (!bfd_is_abs_section (p->sec)
9904 && bfd_is_abs_section (p->sec->output_section))
9906 /* Input section has been discarded, either because
9907 it is a copy of a linkonce section or due to
9908 linker script /DISCARD/, so we'll be discarding
9911 else if (p->count != 0)
9913 asection *srel = elf_section_data (p->sec)->sreloc;
9915 srel = htab->elf.irelplt;
9916 srel->size += p->count * sizeof (Elf64_External_Rela);
9917 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9918 info->flags |= DF_TEXTREL;
9923 lgot_ents = elf_local_got_ents (ibfd);
9927 symtab_hdr = &elf_symtab_hdr (ibfd);
9928 locsymcount = symtab_hdr->sh_info;
9929 end_lgot_ents = lgot_ents + locsymcount;
9930 local_plt = (struct plt_entry **) end_lgot_ents;
9931 end_local_plt = local_plt + locsymcount;
9932 lgot_masks = (unsigned char *) end_local_plt;
9933 s = ppc64_elf_tdata (ibfd)->got;
9934 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9936 struct got_entry **pent, *ent;
9939 while ((ent = *pent) != NULL)
9940 if (ent->got.refcount > 0)
9942 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9944 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9949 unsigned int ent_size = 8;
9950 unsigned int rel_size = sizeof (Elf64_External_Rela);
9952 ent->got.offset = s->size;
9953 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9958 s->size += ent_size;
9959 if ((*lgot_masks & PLT_IFUNC) != 0)
9961 htab->elf.irelplt->size += rel_size;
9962 htab->got_reli_size += rel_size;
9964 else if (bfd_link_pic (info))
9966 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9967 srel->size += rel_size;
9976 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9977 for (; local_plt < end_local_plt; ++local_plt)
9979 struct plt_entry *ent;
9981 for (ent = *local_plt; ent != NULL; ent = ent->next)
9982 if (ent->plt.refcount > 0)
9985 ent->plt.offset = s->size;
9986 s->size += PLT_ENTRY_SIZE (htab);
9988 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9991 ent->plt.offset = (bfd_vma) -1;
9995 /* Allocate global sym .plt and .got entries, and space for global
9996 sym dynamic relocs. */
9997 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9998 /* Stash the end of glink branch table. */
9999 if (htab->glink != NULL)
10000 htab->glink->rawsize = htab->glink->size;
10002 if (!htab->opd_abi && !bfd_link_pic (info))
10003 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10005 first_tlsld = NULL;
10006 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10008 struct got_entry *ent;
10010 if (!is_ppc64_elf (ibfd))
10013 ent = ppc64_tlsld_got (ibfd);
10014 if (ent->got.refcount > 0)
10016 if (!htab->do_multi_toc && first_tlsld != NULL)
10018 ent->is_indirect = TRUE;
10019 ent->got.ent = first_tlsld;
10023 if (first_tlsld == NULL)
10025 s = ppc64_elf_tdata (ibfd)->got;
10026 ent->got.offset = s->size;
10029 if (bfd_link_pic (info))
10031 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10032 srel->size += sizeof (Elf64_External_Rela);
10037 ent->got.offset = (bfd_vma) -1;
10040 /* We now have determined the sizes of the various dynamic sections.
10041 Allocate memory for them. */
10043 for (s = dynobj->sections; s != NULL; s = s->next)
10045 if ((s->flags & SEC_LINKER_CREATED) == 0)
10048 if (s == htab->brlt || s == htab->relbrlt)
10049 /* These haven't been allocated yet; don't strip. */
10051 else if (s == htab->elf.sgot
10052 || s == htab->elf.splt
10053 || s == htab->elf.iplt
10054 || s == htab->glink
10055 || s == htab->dynbss)
10057 /* Strip this section if we don't need it; see the
10060 else if (s == htab->glink_eh_frame)
10062 if (!bfd_is_abs_section (s->output_section))
10063 /* Not sized yet. */
10066 else if (CONST_STRNEQ (s->name, ".rela"))
10070 if (s != htab->elf.srelplt)
10073 /* We use the reloc_count field as a counter if we need
10074 to copy relocs into the output file. */
10075 s->reloc_count = 0;
10080 /* It's not one of our sections, so don't allocate space. */
10086 /* If we don't need this section, strip it from the
10087 output file. This is mostly to handle .rela.bss and
10088 .rela.plt. We must create both sections in
10089 create_dynamic_sections, because they must be created
10090 before the linker maps input sections to output
10091 sections. The linker does that before
10092 adjust_dynamic_symbol is called, and it is that
10093 function which decides whether anything needs to go
10094 into these sections. */
10095 s->flags |= SEC_EXCLUDE;
10099 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10102 /* Allocate memory for the section contents. We use bfd_zalloc
10103 here in case unused entries are not reclaimed before the
10104 section's contents are written out. This should not happen,
10105 but this way if it does we get a R_PPC64_NONE reloc in .rela
10106 sections instead of garbage.
10107 We also rely on the section contents being zero when writing
10109 s->contents = bfd_zalloc (dynobj, s->size);
10110 if (s->contents == NULL)
10114 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10116 if (!is_ppc64_elf (ibfd))
10119 s = ppc64_elf_tdata (ibfd)->got;
10120 if (s != NULL && s != htab->elf.sgot)
10123 s->flags |= SEC_EXCLUDE;
10126 s->contents = bfd_zalloc (ibfd, s->size);
10127 if (s->contents == NULL)
10131 s = ppc64_elf_tdata (ibfd)->relgot;
10135 s->flags |= SEC_EXCLUDE;
10138 s->contents = bfd_zalloc (ibfd, s->size);
10139 if (s->contents == NULL)
10142 s->reloc_count = 0;
10147 if (htab->elf.dynamic_sections_created)
10149 bfd_boolean tls_opt;
10151 /* Add some entries to the .dynamic section. We fill in the
10152 values later, in ppc64_elf_finish_dynamic_sections, but we
10153 must add the entries now so that we get the correct size for
10154 the .dynamic section. The DT_DEBUG entry is filled in by the
10155 dynamic linker and used by the debugger. */
10156 #define add_dynamic_entry(TAG, VAL) \
10157 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10159 if (bfd_link_executable (info))
10161 if (!add_dynamic_entry (DT_DEBUG, 0))
10165 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10167 if (!add_dynamic_entry (DT_PLTGOT, 0)
10168 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10169 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10170 || !add_dynamic_entry (DT_JMPREL, 0)
10171 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10175 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10177 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10178 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10182 tls_opt = (htab->params->tls_get_addr_opt
10183 && htab->tls_get_addr_fd != NULL
10184 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10185 if (tls_opt || !htab->opd_abi)
10187 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10193 if (!add_dynamic_entry (DT_RELA, 0)
10194 || !add_dynamic_entry (DT_RELASZ, 0)
10195 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10198 /* If any dynamic relocs apply to a read-only section,
10199 then we need a DT_TEXTREL entry. */
10200 if ((info->flags & DF_TEXTREL) == 0)
10201 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10203 if ((info->flags & DF_TEXTREL) != 0)
10205 if (!add_dynamic_entry (DT_TEXTREL, 0))
10210 #undef add_dynamic_entry
10215 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10218 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10220 if (h->plt.plist != NULL
10222 && !h->pointer_equality_needed)
10225 return _bfd_elf_hash_symbol (h);
10228 /* Determine the type of stub needed, if any, for a call. */
10230 static inline enum ppc_stub_type
10231 ppc_type_of_stub (asection *input_sec,
10232 const Elf_Internal_Rela *rel,
10233 struct ppc_link_hash_entry **hash,
10234 struct plt_entry **plt_ent,
10235 bfd_vma destination,
10236 unsigned long local_off)
10238 struct ppc_link_hash_entry *h = *hash;
10240 bfd_vma branch_offset;
10241 bfd_vma max_branch_offset;
10242 enum elf_ppc64_reloc_type r_type;
10246 struct plt_entry *ent;
10247 struct ppc_link_hash_entry *fdh = h;
10249 && h->oh->is_func_descriptor)
10251 fdh = ppc_follow_link (h->oh);
10255 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10256 if (ent->addend == rel->r_addend
10257 && ent->plt.offset != (bfd_vma) -1)
10260 return ppc_stub_plt_call;
10263 /* Here, we know we don't have a plt entry. If we don't have a
10264 either a defined function descriptor or a defined entry symbol
10265 in a regular object file, then it is pointless trying to make
10266 any other type of stub. */
10267 if (!is_static_defined (&fdh->elf)
10268 && !is_static_defined (&h->elf))
10269 return ppc_stub_none;
10271 else if (elf_local_got_ents (input_sec->owner) != NULL)
10273 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10274 struct plt_entry **local_plt = (struct plt_entry **)
10275 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10276 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10278 if (local_plt[r_symndx] != NULL)
10280 struct plt_entry *ent;
10282 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10283 if (ent->addend == rel->r_addend
10284 && ent->plt.offset != (bfd_vma) -1)
10287 return ppc_stub_plt_call;
10292 /* Determine where the call point is. */
10293 location = (input_sec->output_offset
10294 + input_sec->output_section->vma
10297 branch_offset = destination - location;
10298 r_type = ELF64_R_TYPE (rel->r_info);
10300 /* Determine if a long branch stub is needed. */
10301 max_branch_offset = 1 << 25;
10302 if (r_type != R_PPC64_REL24)
10303 max_branch_offset = 1 << 15;
10305 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10306 /* We need a stub. Figure out whether a long_branch or plt_branch
10307 is needed later. */
10308 return ppc_stub_long_branch;
10310 return ppc_stub_none;
10313 /* With power7 weakly ordered memory model, it is possible for ld.so
10314 to update a plt entry in one thread and have another thread see a
10315 stale zero toc entry. To avoid this we need some sort of acquire
10316 barrier in the call stub. One solution is to make the load of the
10317 toc word seem to appear to depend on the load of the function entry
10318 word. Another solution is to test for r2 being zero, and branch to
10319 the appropriate glink entry if so.
10321 . fake dep barrier compare
10322 . ld 12,xxx(2) ld 12,xxx(2)
10323 . mtctr 12 mtctr 12
10324 . xor 11,12,12 ld 2,xxx+8(2)
10325 . add 2,2,11 cmpldi 2,0
10326 . ld 2,xxx+8(2) bnectr+
10327 . bctr b <glink_entry>
10329 The solution involving the compare turns out to be faster, so
10330 that's what we use unless the branch won't reach. */
10332 #define ALWAYS_USE_FAKE_DEP 0
10333 #define ALWAYS_EMIT_R2SAVE 0
10335 #define PPC_LO(v) ((v) & 0xffff)
10336 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10337 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10339 static inline unsigned int
10340 plt_stub_size (struct ppc_link_hash_table *htab,
10341 struct ppc_stub_hash_entry *stub_entry,
10344 unsigned size = 12;
10346 if (ALWAYS_EMIT_R2SAVE
10347 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10349 if (PPC_HA (off) != 0)
10354 if (htab->params->plt_static_chain)
10356 if (htab->params->plt_thread_safe
10357 && htab->elf.dynamic_sections_created
10358 && stub_entry->h != NULL
10359 && stub_entry->h->elf.dynindx != -1)
10361 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10364 if (stub_entry->h != NULL
10365 && (stub_entry->h == htab->tls_get_addr_fd
10366 || stub_entry->h == htab->tls_get_addr)
10367 && htab->params->tls_get_addr_opt)
10372 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10373 then return the padding needed to do so. */
10374 static inline unsigned int
10375 plt_stub_pad (struct ppc_link_hash_table *htab,
10376 struct ppc_stub_hash_entry *stub_entry,
10379 int stub_align = 1 << htab->params->plt_stub_align;
10380 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10381 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10383 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10384 > ((stub_size - 1) & -stub_align))
10385 return stub_align - (stub_off & (stub_align - 1));
10389 /* Build a .plt call stub. */
10391 static inline bfd_byte *
10392 build_plt_stub (struct ppc_link_hash_table *htab,
10393 struct ppc_stub_hash_entry *stub_entry,
10394 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10396 bfd *obfd = htab->params->stub_bfd;
10397 bfd_boolean plt_load_toc = htab->opd_abi;
10398 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10399 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10400 && htab->elf.dynamic_sections_created
10401 && stub_entry->h != NULL
10402 && stub_entry->h->elf.dynindx != -1);
10403 bfd_boolean use_fake_dep = plt_thread_safe;
10404 bfd_vma cmp_branch_off = 0;
10406 if (!ALWAYS_USE_FAKE_DEP
10409 && !((stub_entry->h == htab->tls_get_addr_fd
10410 || stub_entry->h == htab->tls_get_addr)
10411 && htab->params->tls_get_addr_opt))
10413 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10414 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10415 / PLT_ENTRY_SIZE (htab));
10416 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10419 if (pltindex > 32768)
10420 glinkoff += (pltindex - 32768) * 4;
10422 + htab->glink->output_offset
10423 + htab->glink->output_section->vma);
10424 from = (p - stub_entry->group->stub_sec->contents
10425 + 4 * (ALWAYS_EMIT_R2SAVE
10426 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10427 + 4 * (PPC_HA (offset) != 0)
10428 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10429 != PPC_HA (offset))
10430 + 4 * (plt_static_chain != 0)
10432 + stub_entry->group->stub_sec->output_offset
10433 + stub_entry->group->stub_sec->output_section->vma);
10434 cmp_branch_off = to - from;
10435 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10438 if (PPC_HA (offset) != 0)
10442 if (ALWAYS_EMIT_R2SAVE
10443 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10444 r[0].r_offset += 4;
10445 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10446 r[1].r_offset = r[0].r_offset + 4;
10447 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10448 r[1].r_addend = r[0].r_addend;
10451 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10453 r[2].r_offset = r[1].r_offset + 4;
10454 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10455 r[2].r_addend = r[0].r_addend;
10459 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10460 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10461 r[2].r_addend = r[0].r_addend + 8;
10462 if (plt_static_chain)
10464 r[3].r_offset = r[2].r_offset + 4;
10465 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10466 r[3].r_addend = r[0].r_addend + 16;
10471 if (ALWAYS_EMIT_R2SAVE
10472 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10473 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10476 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10477 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10481 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10482 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10485 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10487 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10490 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10495 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10496 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10498 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10499 if (plt_static_chain)
10500 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10507 if (ALWAYS_EMIT_R2SAVE
10508 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10509 r[0].r_offset += 4;
10510 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10513 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10515 r[1].r_offset = r[0].r_offset + 4;
10516 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10517 r[1].r_addend = r[0].r_addend;
10521 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10522 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10523 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10524 if (plt_static_chain)
10526 r[2].r_offset = r[1].r_offset + 4;
10527 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10528 r[2].r_addend = r[0].r_addend + 8;
10533 if (ALWAYS_EMIT_R2SAVE
10534 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10535 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10536 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10538 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10540 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10543 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10548 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10549 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10551 if (plt_static_chain)
10552 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10553 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10556 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10558 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10559 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10560 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10563 bfd_put_32 (obfd, BCTR, p), p += 4;
10567 /* Build a special .plt call stub for __tls_get_addr. */
10569 #define LD_R11_0R3 0xe9630000
10570 #define LD_R12_0R3 0xe9830000
10571 #define MR_R0_R3 0x7c601b78
10572 #define CMPDI_R11_0 0x2c2b0000
10573 #define ADD_R3_R12_R13 0x7c6c6a14
10574 #define BEQLR 0x4d820020
10575 #define MR_R3_R0 0x7c030378
10576 #define STD_R11_0R1 0xf9610000
10577 #define BCTRL 0x4e800421
10578 #define LD_R11_0R1 0xe9610000
10579 #define MTLR_R11 0x7d6803a6
10581 static inline bfd_byte *
10582 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10583 struct ppc_stub_hash_entry *stub_entry,
10584 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10586 bfd *obfd = htab->params->stub_bfd;
10588 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10589 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10590 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10591 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10592 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10593 bfd_put_32 (obfd, BEQLR, p), p += 4;
10594 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10595 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10596 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10599 r[0].r_offset += 9 * 4;
10600 p = build_plt_stub (htab, stub_entry, p, offset, r);
10601 bfd_put_32 (obfd, BCTRL, p - 4);
10603 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10604 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10605 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10606 bfd_put_32 (obfd, BLR, p), p += 4;
10611 static Elf_Internal_Rela *
10612 get_relocs (asection *sec, int count)
10614 Elf_Internal_Rela *relocs;
10615 struct bfd_elf_section_data *elfsec_data;
10617 elfsec_data = elf_section_data (sec);
10618 relocs = elfsec_data->relocs;
10619 if (relocs == NULL)
10621 bfd_size_type relsize;
10622 relsize = sec->reloc_count * sizeof (*relocs);
10623 relocs = bfd_alloc (sec->owner, relsize);
10624 if (relocs == NULL)
10626 elfsec_data->relocs = relocs;
10627 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10628 sizeof (Elf_Internal_Shdr));
10629 if (elfsec_data->rela.hdr == NULL)
10631 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10632 * sizeof (Elf64_External_Rela));
10633 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10634 sec->reloc_count = 0;
10636 relocs += sec->reloc_count;
10637 sec->reloc_count += count;
10642 get_r2off (struct bfd_link_info *info,
10643 struct ppc_stub_hash_entry *stub_entry)
10645 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10646 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10650 /* Support linking -R objects. Get the toc pointer from the
10653 if (!htab->opd_abi)
10655 asection *opd = stub_entry->h->elf.root.u.def.section;
10656 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10658 if (strcmp (opd->name, ".opd") != 0
10659 || opd->reloc_count != 0)
10661 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10662 stub_entry->h->elf.root.root.string);
10663 bfd_set_error (bfd_error_bad_value);
10664 return (bfd_vma) -1;
10666 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10667 return (bfd_vma) -1;
10668 r2off = bfd_get_64 (opd->owner, buf);
10669 r2off -= elf_gp (info->output_bfd);
10671 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10676 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10678 struct ppc_stub_hash_entry *stub_entry;
10679 struct ppc_branch_hash_entry *br_entry;
10680 struct bfd_link_info *info;
10681 struct ppc_link_hash_table *htab;
10686 Elf_Internal_Rela *r;
10689 /* Massage our args to the form they really have. */
10690 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10693 htab = ppc_hash_table (info);
10697 /* Make a note of the offset within the stubs for this entry. */
10698 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10699 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10701 htab->stub_count[stub_entry->stub_type - 1] += 1;
10702 switch (stub_entry->stub_type)
10704 case ppc_stub_long_branch:
10705 case ppc_stub_long_branch_r2off:
10706 /* Branches are relative. This is where we are going to. */
10707 dest = (stub_entry->target_value
10708 + stub_entry->target_section->output_offset
10709 + stub_entry->target_section->output_section->vma);
10710 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10713 /* And this is where we are coming from. */
10714 off -= (stub_entry->stub_offset
10715 + stub_entry->group->stub_sec->output_offset
10716 + stub_entry->group->stub_sec->output_section->vma);
10719 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10721 bfd_vma r2off = get_r2off (info, stub_entry);
10723 if (r2off == (bfd_vma) -1)
10725 htab->stub_error = TRUE;
10728 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10731 if (PPC_HA (r2off) != 0)
10733 bfd_put_32 (htab->params->stub_bfd,
10734 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10738 if (PPC_LO (r2off) != 0)
10740 bfd_put_32 (htab->params->stub_bfd,
10741 ADDI_R2_R2 | PPC_LO (r2off), loc);
10747 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10749 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10751 info->callbacks->einfo
10752 (_("%P: long branch stub `%s' offset overflow\n"),
10753 stub_entry->root.string);
10754 htab->stub_error = TRUE;
10758 if (info->emitrelocations)
10760 r = get_relocs (stub_entry->group->stub_sec, 1);
10763 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10764 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10765 r->r_addend = dest;
10766 if (stub_entry->h != NULL)
10768 struct elf_link_hash_entry **hashes;
10769 unsigned long symndx;
10770 struct ppc_link_hash_entry *h;
10772 hashes = elf_sym_hashes (htab->params->stub_bfd);
10773 if (hashes == NULL)
10775 bfd_size_type hsize;
10777 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10778 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10779 if (hashes == NULL)
10781 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10782 htab->stub_globals = 1;
10784 symndx = htab->stub_globals++;
10786 hashes[symndx] = &h->elf;
10787 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10788 if (h->oh != NULL && h->oh->is_func)
10789 h = ppc_follow_link (h->oh);
10790 if (h->elf.root.u.def.section != stub_entry->target_section)
10791 /* H is an opd symbol. The addend must be zero. */
10795 off = (h->elf.root.u.def.value
10796 + h->elf.root.u.def.section->output_offset
10797 + h->elf.root.u.def.section->output_section->vma);
10798 r->r_addend -= off;
10804 case ppc_stub_plt_branch:
10805 case ppc_stub_plt_branch_r2off:
10806 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10807 stub_entry->root.string + 9,
10809 if (br_entry == NULL)
10811 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10812 stub_entry->root.string);
10813 htab->stub_error = TRUE;
10817 dest = (stub_entry->target_value
10818 + stub_entry->target_section->output_offset
10819 + stub_entry->target_section->output_section->vma);
10820 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10821 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10823 bfd_put_64 (htab->brlt->owner, dest,
10824 htab->brlt->contents + br_entry->offset);
10826 if (br_entry->iter == htab->stub_iteration)
10828 br_entry->iter = 0;
10830 if (htab->relbrlt != NULL)
10832 /* Create a reloc for the branch lookup table entry. */
10833 Elf_Internal_Rela rela;
10836 rela.r_offset = (br_entry->offset
10837 + htab->brlt->output_offset
10838 + htab->brlt->output_section->vma);
10839 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10840 rela.r_addend = dest;
10842 rl = htab->relbrlt->contents;
10843 rl += (htab->relbrlt->reloc_count++
10844 * sizeof (Elf64_External_Rela));
10845 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10847 else if (info->emitrelocations)
10849 r = get_relocs (htab->brlt, 1);
10852 /* brlt, being SEC_LINKER_CREATED does not go through the
10853 normal reloc processing. Symbols and offsets are not
10854 translated from input file to output file form, so
10855 set up the offset per the output file. */
10856 r->r_offset = (br_entry->offset
10857 + htab->brlt->output_offset
10858 + htab->brlt->output_section->vma);
10859 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10860 r->r_addend = dest;
10864 dest = (br_entry->offset
10865 + htab->brlt->output_offset
10866 + htab->brlt->output_section->vma);
10869 - elf_gp (htab->brlt->output_section->owner)
10870 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
10872 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10874 info->callbacks->einfo
10875 (_("%P: linkage table error against `%T'\n"),
10876 stub_entry->root.string);
10877 bfd_set_error (bfd_error_bad_value);
10878 htab->stub_error = TRUE;
10882 if (info->emitrelocations)
10884 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
10887 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
10888 if (bfd_big_endian (info->output_bfd))
10889 r[0].r_offset += 2;
10890 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10891 r[0].r_offset += 4;
10892 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10893 r[0].r_addend = dest;
10894 if (PPC_HA (off) != 0)
10896 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10897 r[1].r_offset = r[0].r_offset + 4;
10898 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10899 r[1].r_addend = r[0].r_addend;
10903 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10905 if (PPC_HA (off) != 0)
10908 bfd_put_32 (htab->params->stub_bfd,
10909 ADDIS_R12_R2 | PPC_HA (off), loc);
10911 bfd_put_32 (htab->params->stub_bfd,
10912 LD_R12_0R12 | PPC_LO (off), loc);
10917 bfd_put_32 (htab->params->stub_bfd,
10918 LD_R12_0R2 | PPC_LO (off), loc);
10923 bfd_vma r2off = get_r2off (info, stub_entry);
10925 if (r2off == (bfd_vma) -1)
10927 htab->stub_error = TRUE;
10931 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10934 if (PPC_HA (off) != 0)
10937 bfd_put_32 (htab->params->stub_bfd,
10938 ADDIS_R12_R2 | PPC_HA (off), loc);
10940 bfd_put_32 (htab->params->stub_bfd,
10941 LD_R12_0R12 | PPC_LO (off), loc);
10944 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10946 if (PPC_HA (r2off) != 0)
10950 bfd_put_32 (htab->params->stub_bfd,
10951 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10953 if (PPC_LO (r2off) != 0)
10957 bfd_put_32 (htab->params->stub_bfd,
10958 ADDI_R2_R2 | PPC_LO (r2off), loc);
10962 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10964 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10967 case ppc_stub_plt_call:
10968 case ppc_stub_plt_call_r2save:
10969 if (stub_entry->h != NULL
10970 && stub_entry->h->is_func_descriptor
10971 && stub_entry->h->oh != NULL)
10973 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10975 /* If the old-ABI "dot-symbol" is undefined make it weak so
10976 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
10977 if (fh->elf.root.type == bfd_link_hash_undefined)
10978 fh->elf.root.type = bfd_link_hash_undefweak;
10979 /* Stop undo_symbol_twiddle changing it back to undefined. */
10980 fh->was_undefined = 0;
10983 /* Now build the stub. */
10984 dest = stub_entry->plt_ent->plt.offset & ~1;
10985 if (dest >= (bfd_vma) -2)
10988 plt = htab->elf.splt;
10989 if (!htab->elf.dynamic_sections_created
10990 || stub_entry->h == NULL
10991 || stub_entry->h->elf.dynindx == -1)
10992 plt = htab->elf.iplt;
10994 dest += plt->output_offset + plt->output_section->vma;
10996 if (stub_entry->h == NULL
10997 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10999 Elf_Internal_Rela rela;
11002 rela.r_offset = dest;
11004 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11006 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11007 rela.r_addend = (stub_entry->target_value
11008 + stub_entry->target_section->output_offset
11009 + stub_entry->target_section->output_section->vma);
11011 rl = (htab->elf.irelplt->contents
11012 + (htab->elf.irelplt->reloc_count++
11013 * sizeof (Elf64_External_Rela)));
11014 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11015 stub_entry->plt_ent->plt.offset |= 1;
11019 - elf_gp (plt->output_section->owner)
11020 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11022 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11024 info->callbacks->einfo
11025 (_("%P: linkage table error against `%T'\n"),
11026 stub_entry->h != NULL
11027 ? stub_entry->h->elf.root.root.string
11029 bfd_set_error (bfd_error_bad_value);
11030 htab->stub_error = TRUE;
11034 if (htab->params->plt_stub_align != 0)
11036 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11038 stub_entry->group->stub_sec->size += pad;
11039 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11044 if (info->emitrelocations)
11046 r = get_relocs (stub_entry->group->stub_sec,
11047 ((PPC_HA (off) != 0)
11049 ? 2 + (htab->params->plt_static_chain
11050 && PPC_HA (off + 16) == PPC_HA (off))
11054 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11055 if (bfd_big_endian (info->output_bfd))
11056 r[0].r_offset += 2;
11057 r[0].r_addend = dest;
11059 if (stub_entry->h != NULL
11060 && (stub_entry->h == htab->tls_get_addr_fd
11061 || stub_entry->h == htab->tls_get_addr)
11062 && htab->params->tls_get_addr_opt)
11063 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11065 p = build_plt_stub (htab, stub_entry, loc, off, r);
11069 case ppc_stub_save_res:
11077 stub_entry->group->stub_sec->size += size;
11079 if (htab->params->emit_stub_syms)
11081 struct elf_link_hash_entry *h;
11084 const char *const stub_str[] = { "long_branch",
11085 "long_branch_r2off",
11087 "plt_branch_r2off",
11091 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11092 len2 = strlen (stub_entry->root.string);
11093 name = bfd_malloc (len1 + len2 + 2);
11096 memcpy (name, stub_entry->root.string, 9);
11097 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11098 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11099 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11102 if (h->root.type == bfd_link_hash_new)
11104 h->root.type = bfd_link_hash_defined;
11105 h->root.u.def.section = stub_entry->group->stub_sec;
11106 h->root.u.def.value = stub_entry->stub_offset;
11107 h->ref_regular = 1;
11108 h->def_regular = 1;
11109 h->ref_regular_nonweak = 1;
11110 h->forced_local = 1;
11112 h->root.linker_def = 1;
11119 /* As above, but don't actually build the stub. Just bump offset so
11120 we know stub section sizes, and select plt_branch stubs where
11121 long_branch stubs won't do. */
11124 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11126 struct ppc_stub_hash_entry *stub_entry;
11127 struct bfd_link_info *info;
11128 struct ppc_link_hash_table *htab;
11132 /* Massage our args to the form they really have. */
11133 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11136 htab = ppc_hash_table (info);
11140 if (stub_entry->h != NULL
11141 && stub_entry->h->save_res
11142 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11143 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11145 /* Don't make stubs to out-of-line register save/restore
11146 functions. Instead, emit copies of the functions. */
11147 stub_entry->group->needs_save_res = 1;
11148 stub_entry->stub_type = ppc_stub_save_res;
11152 if (stub_entry->stub_type == ppc_stub_plt_call
11153 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11156 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11157 if (off >= (bfd_vma) -2)
11159 plt = htab->elf.splt;
11160 if (!htab->elf.dynamic_sections_created
11161 || stub_entry->h == NULL
11162 || stub_entry->h->elf.dynindx == -1)
11163 plt = htab->elf.iplt;
11164 off += (plt->output_offset
11165 + plt->output_section->vma
11166 - elf_gp (plt->output_section->owner)
11167 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11169 size = plt_stub_size (htab, stub_entry, off);
11170 if (htab->params->plt_stub_align)
11171 size += plt_stub_pad (htab, stub_entry, off);
11172 if (info->emitrelocations)
11174 stub_entry->group->stub_sec->reloc_count
11175 += ((PPC_HA (off) != 0)
11177 ? 2 + (htab->params->plt_static_chain
11178 && PPC_HA (off + 16) == PPC_HA (off))
11180 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11185 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11188 bfd_vma local_off = 0;
11190 off = (stub_entry->target_value
11191 + stub_entry->target_section->output_offset
11192 + stub_entry->target_section->output_section->vma);
11193 off -= (stub_entry->group->stub_sec->size
11194 + stub_entry->group->stub_sec->output_offset
11195 + stub_entry->group->stub_sec->output_section->vma);
11197 /* Reset the stub type from the plt variant in case we now
11198 can reach with a shorter stub. */
11199 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11200 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11203 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11205 r2off = get_r2off (info, stub_entry);
11206 if (r2off == (bfd_vma) -1)
11208 htab->stub_error = TRUE;
11212 if (PPC_HA (r2off) != 0)
11214 if (PPC_LO (r2off) != 0)
11219 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11221 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11222 Do the same for -R objects without function descriptors. */
11223 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11224 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11226 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11228 struct ppc_branch_hash_entry *br_entry;
11230 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11231 stub_entry->root.string + 9,
11233 if (br_entry == NULL)
11235 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11236 stub_entry->root.string);
11237 htab->stub_error = TRUE;
11241 if (br_entry->iter != htab->stub_iteration)
11243 br_entry->iter = htab->stub_iteration;
11244 br_entry->offset = htab->brlt->size;
11245 htab->brlt->size += 8;
11247 if (htab->relbrlt != NULL)
11248 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11249 else if (info->emitrelocations)
11251 htab->brlt->reloc_count += 1;
11252 htab->brlt->flags |= SEC_RELOC;
11256 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11257 off = (br_entry->offset
11258 + htab->brlt->output_offset
11259 + htab->brlt->output_section->vma
11260 - elf_gp (htab->brlt->output_section->owner)
11261 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11263 if (info->emitrelocations)
11265 stub_entry->group->stub_sec->reloc_count
11266 += 1 + (PPC_HA (off) != 0);
11267 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11270 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11273 if (PPC_HA (off) != 0)
11279 if (PPC_HA (off) != 0)
11282 if (PPC_HA (r2off) != 0)
11284 if (PPC_LO (r2off) != 0)
11288 else if (info->emitrelocations)
11290 stub_entry->group->stub_sec->reloc_count += 1;
11291 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11295 stub_entry->group->stub_sec->size += size;
11299 /* Set up various things so that we can make a list of input sections
11300 for each output section included in the link. Returns -1 on error,
11301 0 when no stubs will be needed, and 1 on success. */
11304 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11308 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11313 htab->sec_info_arr_size = bfd_get_next_section_id ();
11314 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11315 htab->sec_info = bfd_zmalloc (amt);
11316 if (htab->sec_info == NULL)
11319 /* Set toc_off for com, und, abs and ind sections. */
11320 for (id = 0; id < 3; id++)
11321 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11326 /* Set up for first pass at multitoc partitioning. */
11329 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11331 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11333 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11334 htab->toc_bfd = NULL;
11335 htab->toc_first_sec = NULL;
11338 /* The linker repeatedly calls this function for each TOC input section
11339 and linker generated GOT section. Group input bfds such that the toc
11340 within a group is less than 64k in size. */
11343 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11345 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11346 bfd_vma addr, off, limit;
11351 if (!htab->second_toc_pass)
11353 /* Keep track of the first .toc or .got section for this input bfd. */
11354 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11358 htab->toc_bfd = isec->owner;
11359 htab->toc_first_sec = isec;
11362 addr = isec->output_offset + isec->output_section->vma;
11363 off = addr - htab->toc_curr;
11364 limit = 0x80008000;
11365 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11367 if (off + isec->size > limit)
11369 addr = (htab->toc_first_sec->output_offset
11370 + htab->toc_first_sec->output_section->vma);
11371 htab->toc_curr = addr;
11372 htab->toc_curr &= -TOC_BASE_ALIGN;
11375 /* toc_curr is the base address of this toc group. Set elf_gp
11376 for the input section to be the offset relative to the
11377 output toc base plus 0x8000. Making the input elf_gp an
11378 offset allows us to move the toc as a whole without
11379 recalculating input elf_gp. */
11380 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11381 off += TOC_BASE_OFF;
11383 /* Die if someone uses a linker script that doesn't keep input
11384 file .toc and .got together. */
11386 && elf_gp (isec->owner) != 0
11387 && elf_gp (isec->owner) != off)
11390 elf_gp (isec->owner) = off;
11394 /* During the second pass toc_first_sec points to the start of
11395 a toc group, and toc_curr is used to track the old elf_gp.
11396 We use toc_bfd to ensure we only look at each bfd once. */
11397 if (htab->toc_bfd == isec->owner)
11399 htab->toc_bfd = isec->owner;
11401 if (htab->toc_first_sec == NULL
11402 || htab->toc_curr != elf_gp (isec->owner))
11404 htab->toc_curr = elf_gp (isec->owner);
11405 htab->toc_first_sec = isec;
11407 addr = (htab->toc_first_sec->output_offset
11408 + htab->toc_first_sec->output_section->vma);
11409 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11410 elf_gp (isec->owner) = off;
11415 /* Called via elf_link_hash_traverse to merge GOT entries for global
11419 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11421 if (h->root.type == bfd_link_hash_indirect)
11424 merge_got_entries (&h->got.glist);
11429 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11433 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11435 struct got_entry *gent;
11437 if (h->root.type == bfd_link_hash_indirect)
11440 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11441 if (!gent->is_indirect)
11442 allocate_got (h, (struct bfd_link_info *) inf, gent);
11446 /* Called on the first multitoc pass after the last call to
11447 ppc64_elf_next_toc_section. This function removes duplicate GOT
11451 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11453 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11454 struct bfd *ibfd, *ibfd2;
11455 bfd_boolean done_something;
11457 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11459 if (!htab->do_multi_toc)
11462 /* Merge global sym got entries within a toc group. */
11463 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11465 /* And tlsld_got. */
11466 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11468 struct got_entry *ent, *ent2;
11470 if (!is_ppc64_elf (ibfd))
11473 ent = ppc64_tlsld_got (ibfd);
11474 if (!ent->is_indirect
11475 && ent->got.offset != (bfd_vma) -1)
11477 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11479 if (!is_ppc64_elf (ibfd2))
11482 ent2 = ppc64_tlsld_got (ibfd2);
11483 if (!ent2->is_indirect
11484 && ent2->got.offset != (bfd_vma) -1
11485 && elf_gp (ibfd2) == elf_gp (ibfd))
11487 ent2->is_indirect = TRUE;
11488 ent2->got.ent = ent;
11494 /* Zap sizes of got sections. */
11495 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11496 htab->elf.irelplt->size -= htab->got_reli_size;
11497 htab->got_reli_size = 0;
11499 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11501 asection *got, *relgot;
11503 if (!is_ppc64_elf (ibfd))
11506 got = ppc64_elf_tdata (ibfd)->got;
11509 got->rawsize = got->size;
11511 relgot = ppc64_elf_tdata (ibfd)->relgot;
11512 relgot->rawsize = relgot->size;
11517 /* Now reallocate the got, local syms first. We don't need to
11518 allocate section contents again since we never increase size. */
11519 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11521 struct got_entry **lgot_ents;
11522 struct got_entry **end_lgot_ents;
11523 struct plt_entry **local_plt;
11524 struct plt_entry **end_local_plt;
11525 unsigned char *lgot_masks;
11526 bfd_size_type locsymcount;
11527 Elf_Internal_Shdr *symtab_hdr;
11530 if (!is_ppc64_elf (ibfd))
11533 lgot_ents = elf_local_got_ents (ibfd);
11537 symtab_hdr = &elf_symtab_hdr (ibfd);
11538 locsymcount = symtab_hdr->sh_info;
11539 end_lgot_ents = lgot_ents + locsymcount;
11540 local_plt = (struct plt_entry **) end_lgot_ents;
11541 end_local_plt = local_plt + locsymcount;
11542 lgot_masks = (unsigned char *) end_local_plt;
11543 s = ppc64_elf_tdata (ibfd)->got;
11544 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11546 struct got_entry *ent;
11548 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11550 unsigned int ent_size = 8;
11551 unsigned int rel_size = sizeof (Elf64_External_Rela);
11553 ent->got.offset = s->size;
11554 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11559 s->size += ent_size;
11560 if ((*lgot_masks & PLT_IFUNC) != 0)
11562 htab->elf.irelplt->size += rel_size;
11563 htab->got_reli_size += rel_size;
11565 else if (bfd_link_pic (info))
11567 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11568 srel->size += rel_size;
11574 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11576 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11578 struct got_entry *ent;
11580 if (!is_ppc64_elf (ibfd))
11583 ent = ppc64_tlsld_got (ibfd);
11584 if (!ent->is_indirect
11585 && ent->got.offset != (bfd_vma) -1)
11587 asection *s = ppc64_elf_tdata (ibfd)->got;
11588 ent->got.offset = s->size;
11590 if (bfd_link_pic (info))
11592 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11593 srel->size += sizeof (Elf64_External_Rela);
11598 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11599 if (!done_something)
11600 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11604 if (!is_ppc64_elf (ibfd))
11607 got = ppc64_elf_tdata (ibfd)->got;
11610 done_something = got->rawsize != got->size;
11611 if (done_something)
11616 if (done_something)
11617 (*htab->params->layout_sections_again) ();
11619 /* Set up for second pass over toc sections to recalculate elf_gp
11620 on input sections. */
11621 htab->toc_bfd = NULL;
11622 htab->toc_first_sec = NULL;
11623 htab->second_toc_pass = TRUE;
11624 return done_something;
11627 /* Called after second pass of multitoc partitioning. */
11630 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11632 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11634 /* After the second pass, toc_curr tracks the TOC offset used
11635 for code sections below in ppc64_elf_next_input_section. */
11636 htab->toc_curr = TOC_BASE_OFF;
11639 /* No toc references were found in ISEC. If the code in ISEC makes no
11640 calls, then there's no need to use toc adjusting stubs when branching
11641 into ISEC. Actually, indirect calls from ISEC are OK as they will
11642 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11643 needed, and 2 if a cyclical call-graph was found but no other reason
11644 for a stub was detected. If called from the top level, a return of
11645 2 means the same as a return of 0. */
11648 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11652 /* Mark this section as checked. */
11653 isec->call_check_done = 1;
11655 /* We know none of our code bearing sections will need toc stubs. */
11656 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11659 if (isec->size == 0)
11662 if (isec->output_section == NULL)
11666 if (isec->reloc_count != 0)
11668 Elf_Internal_Rela *relstart, *rel;
11669 Elf_Internal_Sym *local_syms;
11670 struct ppc_link_hash_table *htab;
11672 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11673 info->keep_memory);
11674 if (relstart == NULL)
11677 /* Look for branches to outside of this section. */
11679 htab = ppc_hash_table (info);
11683 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11685 enum elf_ppc64_reloc_type r_type;
11686 unsigned long r_symndx;
11687 struct elf_link_hash_entry *h;
11688 struct ppc_link_hash_entry *eh;
11689 Elf_Internal_Sym *sym;
11691 struct _opd_sec_data *opd;
11695 r_type = ELF64_R_TYPE (rel->r_info);
11696 if (r_type != R_PPC64_REL24
11697 && r_type != R_PPC64_REL14
11698 && r_type != R_PPC64_REL14_BRTAKEN
11699 && r_type != R_PPC64_REL14_BRNTAKEN)
11702 r_symndx = ELF64_R_SYM (rel->r_info);
11703 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11710 /* Calls to dynamic lib functions go through a plt call stub
11712 eh = (struct ppc_link_hash_entry *) h;
11714 && (eh->elf.plt.plist != NULL
11716 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11722 if (sym_sec == NULL)
11723 /* Ignore other undefined symbols. */
11726 /* Assume branches to other sections not included in the
11727 link need stubs too, to cover -R and absolute syms. */
11728 if (sym_sec->output_section == NULL)
11735 sym_value = sym->st_value;
11738 if (h->root.type != bfd_link_hash_defined
11739 && h->root.type != bfd_link_hash_defweak)
11741 sym_value = h->root.u.def.value;
11743 sym_value += rel->r_addend;
11745 /* If this branch reloc uses an opd sym, find the code section. */
11746 opd = get_opd_info (sym_sec);
11749 if (h == NULL && opd->adjust != NULL)
11753 adjust = opd->adjust[OPD_NDX (sym_value)];
11755 /* Assume deleted functions won't ever be called. */
11757 sym_value += adjust;
11760 dest = opd_entry_value (sym_sec, sym_value,
11761 &sym_sec, NULL, FALSE);
11762 if (dest == (bfd_vma) -1)
11767 + sym_sec->output_offset
11768 + sym_sec->output_section->vma);
11770 /* Ignore branch to self. */
11771 if (sym_sec == isec)
11774 /* If the called function uses the toc, we need a stub. */
11775 if (sym_sec->has_toc_reloc
11776 || sym_sec->makes_toc_func_call)
11782 /* Assume any branch that needs a long branch stub might in fact
11783 need a plt_branch stub. A plt_branch stub uses r2. */
11784 else if (dest - (isec->output_offset
11785 + isec->output_section->vma
11786 + rel->r_offset) + (1 << 25)
11787 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11795 /* If calling back to a section in the process of being
11796 tested, we can't say for sure that no toc adjusting stubs
11797 are needed, so don't return zero. */
11798 else if (sym_sec->call_check_in_progress)
11801 /* Branches to another section that itself doesn't have any TOC
11802 references are OK. Recursively call ourselves to check. */
11803 else if (!sym_sec->call_check_done)
11807 /* Mark current section as indeterminate, so that other
11808 sections that call back to current won't be marked as
11810 isec->call_check_in_progress = 1;
11811 recur = toc_adjusting_stub_needed (info, sym_sec);
11812 isec->call_check_in_progress = 0;
11823 if (local_syms != NULL
11824 && (elf_symtab_hdr (isec->owner).contents
11825 != (unsigned char *) local_syms))
11827 if (elf_section_data (isec)->relocs != relstart)
11832 && isec->map_head.s != NULL
11833 && (strcmp (isec->output_section->name, ".init") == 0
11834 || strcmp (isec->output_section->name, ".fini") == 0))
11836 if (isec->map_head.s->has_toc_reloc
11837 || isec->map_head.s->makes_toc_func_call)
11839 else if (!isec->map_head.s->call_check_done)
11842 isec->call_check_in_progress = 1;
11843 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11844 isec->call_check_in_progress = 0;
11851 isec->makes_toc_func_call = 1;
11856 /* The linker repeatedly calls this function for each input section,
11857 in the order that input sections are linked into output sections.
11858 Build lists of input sections to determine groupings between which
11859 we may insert linker stubs. */
11862 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11864 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11869 if ((isec->output_section->flags & SEC_CODE) != 0
11870 && isec->output_section->id < htab->sec_info_arr_size)
11872 /* This happens to make the list in reverse order,
11873 which is what we want. */
11874 htab->sec_info[isec->id].u.list
11875 = htab->sec_info[isec->output_section->id].u.list;
11876 htab->sec_info[isec->output_section->id].u.list = isec;
11879 if (htab->multi_toc_needed)
11881 /* Analyse sections that aren't already flagged as needing a
11882 valid toc pointer. Exclude .fixup for the linux kernel.
11883 .fixup contains branches, but only back to the function that
11884 hit an exception. */
11885 if (!(isec->has_toc_reloc
11886 || (isec->flags & SEC_CODE) == 0
11887 || strcmp (isec->name, ".fixup") == 0
11888 || isec->call_check_done))
11890 if (toc_adjusting_stub_needed (info, isec) < 0)
11893 /* Make all sections use the TOC assigned for this object file.
11894 This will be wrong for pasted sections; We fix that in
11895 check_pasted_section(). */
11896 if (elf_gp (isec->owner) != 0)
11897 htab->toc_curr = elf_gp (isec->owner);
11900 htab->sec_info[isec->id].toc_off = htab->toc_curr;
11904 /* Check that all .init and .fini sections use the same toc, if they
11905 have toc relocs. */
11908 check_pasted_section (struct bfd_link_info *info, const char *name)
11910 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11914 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11915 bfd_vma toc_off = 0;
11918 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11919 if (i->has_toc_reloc)
11922 toc_off = htab->sec_info[i->id].toc_off;
11923 else if (toc_off != htab->sec_info[i->id].toc_off)
11928 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11929 if (i->makes_toc_func_call)
11931 toc_off = htab->sec_info[i->id].toc_off;
11935 /* Make sure the whole pasted function uses the same toc offset. */
11937 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11938 htab->sec_info[i->id].toc_off = toc_off;
11944 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11946 return (check_pasted_section (info, ".init")
11947 & check_pasted_section (info, ".fini"));
11950 /* See whether we can group stub sections together. Grouping stub
11951 sections may result in fewer stubs. More importantly, we need to
11952 put all .init* and .fini* stubs at the beginning of the .init or
11953 .fini output sections respectively, because glibc splits the
11954 _init and _fini functions into multiple parts. Putting a stub in
11955 the middle of a function is not a good idea. */
11958 group_sections (struct bfd_link_info *info,
11959 bfd_size_type stub_group_size,
11960 bfd_boolean stubs_always_before_branch)
11962 struct ppc_link_hash_table *htab;
11964 bfd_size_type stub14_group_size;
11965 bfd_boolean suppress_size_errors;
11967 htab = ppc_hash_table (info);
11971 suppress_size_errors = FALSE;
11972 stub14_group_size = stub_group_size >> 10;
11973 if (stub_group_size == 1)
11975 /* Default values. */
11976 if (stubs_always_before_branch)
11978 stub_group_size = 0x1e00000;
11979 stub14_group_size = 0x7800;
11983 stub_group_size = 0x1c00000;
11984 stub14_group_size = 0x7000;
11986 suppress_size_errors = TRUE;
11989 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
11993 if (osec->id >= htab->sec_info_arr_size)
11996 tail = htab->sec_info[osec->id].u.list;
11997 while (tail != NULL)
12001 bfd_size_type total;
12002 bfd_boolean big_sec;
12004 struct map_stub *group;
12007 total = tail->size;
12008 big_sec = total > (ppc64_elf_section_data (tail) != NULL
12009 && ppc64_elf_section_data (tail)->has_14bit_branch
12010 ? stub14_group_size : stub_group_size);
12011 if (big_sec && !suppress_size_errors)
12012 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
12013 tail->owner, tail);
12014 curr_toc = htab->sec_info[tail->id].toc_off;
12016 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12017 && ((total += curr->output_offset - prev->output_offset)
12018 < (ppc64_elf_section_data (prev) != NULL
12019 && ppc64_elf_section_data (prev)->has_14bit_branch
12020 ? stub14_group_size : stub_group_size))
12021 && htab->sec_info[prev->id].toc_off == curr_toc)
12024 /* OK, the size from the start of CURR to the end is less
12025 than stub_group_size and thus can be handled by one stub
12026 section. (or the tail section is itself larger than
12027 stub_group_size, in which case we may be toast.) We
12028 should really be keeping track of the total size of stubs
12029 added here, as stubs contribute to the final output
12030 section size. That's a little tricky, and this way will
12031 only break if stubs added make the total size more than
12032 2^25, ie. for the default stub_group_size, if stubs total
12033 more than 2097152 bytes, or nearly 75000 plt call stubs. */
12034 group = bfd_alloc (curr->owner, sizeof (*group));
12037 group->link_sec = curr;
12038 group->stub_sec = NULL;
12039 group->needs_save_res = 0;
12040 group->next = htab->group;
12041 htab->group = group;
12044 prev = htab->sec_info[tail->id].u.list;
12045 /* Set up this stub group. */
12046 htab->sec_info[tail->id].u.group = group;
12048 while (tail != curr && (tail = prev) != NULL);
12050 /* But wait, there's more! Input sections up to stub_group_size
12051 bytes before the stub section can be handled by it too.
12052 Don't do this if we have a really large section after the
12053 stubs, as adding more stubs increases the chance that
12054 branches may not reach into the stub section. */
12055 if (!stubs_always_before_branch && !big_sec)
12058 while (prev != NULL
12059 && ((total += tail->output_offset - prev->output_offset)
12060 < (ppc64_elf_section_data (prev) != NULL
12061 && ppc64_elf_section_data (prev)->has_14bit_branch
12062 ? stub14_group_size : stub_group_size))
12063 && htab->sec_info[prev->id].toc_off == curr_toc)
12066 prev = htab->sec_info[tail->id].u.list;
12067 htab->sec_info[tail->id].u.group = group;
12076 static const unsigned char glink_eh_frame_cie[] =
12078 0, 0, 0, 16, /* length. */
12079 0, 0, 0, 0, /* id. */
12080 1, /* CIE version. */
12081 'z', 'R', 0, /* Augmentation string. */
12082 4, /* Code alignment. */
12083 0x78, /* Data alignment. */
12085 1, /* Augmentation size. */
12086 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12087 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
12091 /* Stripping output sections is normally done before dynamic section
12092 symbols have been allocated. This function is called later, and
12093 handles cases like htab->brlt which is mapped to its own output
12097 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12099 if (isec->size == 0
12100 && isec->output_section->size == 0
12101 && !(isec->output_section->flags & SEC_KEEP)
12102 && !bfd_section_removed_from_list (info->output_bfd,
12103 isec->output_section)
12104 && elf_section_data (isec->output_section)->dynindx == 0)
12106 isec->output_section->flags |= SEC_EXCLUDE;
12107 bfd_section_list_remove (info->output_bfd, isec->output_section);
12108 info->output_bfd->section_count--;
12112 /* Determine and set the size of the stub section for a final link.
12114 The basic idea here is to examine all the relocations looking for
12115 PC-relative calls to a target that is unreachable with a "bl"
12119 ppc64_elf_size_stubs (struct bfd_link_info *info)
12121 bfd_size_type stub_group_size;
12122 bfd_boolean stubs_always_before_branch;
12123 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12128 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12129 htab->params->plt_thread_safe = 1;
12130 if (!htab->opd_abi)
12131 htab->params->plt_thread_safe = 0;
12132 else if (htab->params->plt_thread_safe == -1)
12134 static const char *const thread_starter[] =
12138 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12140 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12141 "mq_notify", "create_timer",
12146 "GOMP_parallel_start",
12147 "GOMP_parallel_loop_static",
12148 "GOMP_parallel_loop_static_start",
12149 "GOMP_parallel_loop_dynamic",
12150 "GOMP_parallel_loop_dynamic_start",
12151 "GOMP_parallel_loop_guided",
12152 "GOMP_parallel_loop_guided_start",
12153 "GOMP_parallel_loop_runtime",
12154 "GOMP_parallel_loop_runtime_start",
12155 "GOMP_parallel_sections",
12156 "GOMP_parallel_sections_start",
12162 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12164 struct elf_link_hash_entry *h;
12165 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12166 FALSE, FALSE, TRUE);
12167 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12168 if (htab->params->plt_thread_safe)
12172 stubs_always_before_branch = htab->params->group_size < 0;
12173 if (htab->params->group_size < 0)
12174 stub_group_size = -htab->params->group_size;
12176 stub_group_size = htab->params->group_size;
12178 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12181 #define STUB_SHRINK_ITER 20
12182 /* Loop until no stubs added. After iteration 20 of this loop we may
12183 exit on a stub section shrinking. This is to break out of a
12184 pathological case where adding stubs on one iteration decreases
12185 section gaps (perhaps due to alignment), which then requires
12186 fewer or smaller stubs on the next iteration. */
12191 unsigned int bfd_indx;
12192 struct map_stub *group;
12193 asection *stub_sec;
12195 htab->stub_iteration += 1;
12197 for (input_bfd = info->input_bfds, bfd_indx = 0;
12199 input_bfd = input_bfd->link.next, bfd_indx++)
12201 Elf_Internal_Shdr *symtab_hdr;
12203 Elf_Internal_Sym *local_syms = NULL;
12205 if (!is_ppc64_elf (input_bfd))
12208 /* We'll need the symbol table in a second. */
12209 symtab_hdr = &elf_symtab_hdr (input_bfd);
12210 if (symtab_hdr->sh_info == 0)
12213 /* Walk over each section attached to the input bfd. */
12214 for (section = input_bfd->sections;
12216 section = section->next)
12218 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12220 /* If there aren't any relocs, then there's nothing more
12222 if ((section->flags & SEC_RELOC) == 0
12223 || (section->flags & SEC_ALLOC) == 0
12224 || (section->flags & SEC_LOAD) == 0
12225 || (section->flags & SEC_CODE) == 0
12226 || section->reloc_count == 0)
12229 /* If this section is a link-once section that will be
12230 discarded, then don't create any stubs. */
12231 if (section->output_section == NULL
12232 || section->output_section->owner != info->output_bfd)
12235 /* Get the relocs. */
12237 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12238 info->keep_memory);
12239 if (internal_relocs == NULL)
12240 goto error_ret_free_local;
12242 /* Now examine each relocation. */
12243 irela = internal_relocs;
12244 irelaend = irela + section->reloc_count;
12245 for (; irela < irelaend; irela++)
12247 enum elf_ppc64_reloc_type r_type;
12248 unsigned int r_indx;
12249 enum ppc_stub_type stub_type;
12250 struct ppc_stub_hash_entry *stub_entry;
12251 asection *sym_sec, *code_sec;
12252 bfd_vma sym_value, code_value;
12253 bfd_vma destination;
12254 unsigned long local_off;
12255 bfd_boolean ok_dest;
12256 struct ppc_link_hash_entry *hash;
12257 struct ppc_link_hash_entry *fdh;
12258 struct elf_link_hash_entry *h;
12259 Elf_Internal_Sym *sym;
12261 const asection *id_sec;
12262 struct _opd_sec_data *opd;
12263 struct plt_entry *plt_ent;
12265 r_type = ELF64_R_TYPE (irela->r_info);
12266 r_indx = ELF64_R_SYM (irela->r_info);
12268 if (r_type >= R_PPC64_max)
12270 bfd_set_error (bfd_error_bad_value);
12271 goto error_ret_free_internal;
12274 /* Only look for stubs on branch instructions. */
12275 if (r_type != R_PPC64_REL24
12276 && r_type != R_PPC64_REL14
12277 && r_type != R_PPC64_REL14_BRTAKEN
12278 && r_type != R_PPC64_REL14_BRNTAKEN)
12281 /* Now determine the call target, its name, value,
12283 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12284 r_indx, input_bfd))
12285 goto error_ret_free_internal;
12286 hash = (struct ppc_link_hash_entry *) h;
12293 sym_value = sym->st_value;
12294 if (sym_sec != NULL
12295 && sym_sec->output_section != NULL)
12298 else if (hash->elf.root.type == bfd_link_hash_defined
12299 || hash->elf.root.type == bfd_link_hash_defweak)
12301 sym_value = hash->elf.root.u.def.value;
12302 if (sym_sec->output_section != NULL)
12305 else if (hash->elf.root.type == bfd_link_hash_undefweak
12306 || hash->elf.root.type == bfd_link_hash_undefined)
12308 /* Recognise an old ABI func code entry sym, and
12309 use the func descriptor sym instead if it is
12311 if (hash->elf.root.root.string[0] == '.'
12312 && (fdh = lookup_fdh (hash, htab)) != NULL)
12314 if (fdh->elf.root.type == bfd_link_hash_defined
12315 || fdh->elf.root.type == bfd_link_hash_defweak)
12317 sym_sec = fdh->elf.root.u.def.section;
12318 sym_value = fdh->elf.root.u.def.value;
12319 if (sym_sec->output_section != NULL)
12328 bfd_set_error (bfd_error_bad_value);
12329 goto error_ret_free_internal;
12336 sym_value += irela->r_addend;
12337 destination = (sym_value
12338 + sym_sec->output_offset
12339 + sym_sec->output_section->vma);
12340 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12345 code_sec = sym_sec;
12346 code_value = sym_value;
12347 opd = get_opd_info (sym_sec);
12352 if (hash == NULL && opd->adjust != NULL)
12354 long adjust = opd->adjust[OPD_NDX (sym_value)];
12357 code_value += adjust;
12358 sym_value += adjust;
12360 dest = opd_entry_value (sym_sec, sym_value,
12361 &code_sec, &code_value, FALSE);
12362 if (dest != (bfd_vma) -1)
12364 destination = dest;
12367 /* Fixup old ABI sym to point at code
12369 hash->elf.root.type = bfd_link_hash_defweak;
12370 hash->elf.root.u.def.section = code_sec;
12371 hash->elf.root.u.def.value = code_value;
12376 /* Determine what (if any) linker stub is needed. */
12378 stub_type = ppc_type_of_stub (section, irela, &hash,
12379 &plt_ent, destination,
12382 if (stub_type != ppc_stub_plt_call)
12384 /* Check whether we need a TOC adjusting stub.
12385 Since the linker pastes together pieces from
12386 different object files when creating the
12387 _init and _fini functions, it may be that a
12388 call to what looks like a local sym is in
12389 fact a call needing a TOC adjustment. */
12390 if (code_sec != NULL
12391 && code_sec->output_section != NULL
12392 && (htab->sec_info[code_sec->id].toc_off
12393 != htab->sec_info[section->id].toc_off)
12394 && (code_sec->has_toc_reloc
12395 || code_sec->makes_toc_func_call))
12396 stub_type = ppc_stub_long_branch_r2off;
12399 if (stub_type == ppc_stub_none)
12402 /* __tls_get_addr calls might be eliminated. */
12403 if (stub_type != ppc_stub_plt_call
12405 && (hash == htab->tls_get_addr
12406 || hash == htab->tls_get_addr_fd)
12407 && section->has_tls_reloc
12408 && irela != internal_relocs)
12410 /* Get tls info. */
12411 unsigned char *tls_mask;
12413 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12414 irela - 1, input_bfd))
12415 goto error_ret_free_internal;
12416 if (*tls_mask != 0)
12420 if (stub_type == ppc_stub_plt_call
12421 && irela + 1 < irelaend
12422 && irela[1].r_offset == irela->r_offset + 4
12423 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12425 if (!tocsave_find (htab, INSERT,
12426 &local_syms, irela + 1, input_bfd))
12427 goto error_ret_free_internal;
12429 else if (stub_type == ppc_stub_plt_call)
12430 stub_type = ppc_stub_plt_call_r2save;
12432 /* Support for grouping stub sections. */
12433 id_sec = htab->sec_info[section->id].u.group->link_sec;
12435 /* Get the name of this stub. */
12436 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12438 goto error_ret_free_internal;
12440 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12441 stub_name, FALSE, FALSE);
12442 if (stub_entry != NULL)
12444 /* The proper stub has already been created. */
12446 if (stub_type == ppc_stub_plt_call_r2save)
12447 stub_entry->stub_type = stub_type;
12451 stub_entry = ppc_add_stub (stub_name, section, info);
12452 if (stub_entry == NULL)
12455 error_ret_free_internal:
12456 if (elf_section_data (section)->relocs == NULL)
12457 free (internal_relocs);
12458 error_ret_free_local:
12459 if (local_syms != NULL
12460 && (symtab_hdr->contents
12461 != (unsigned char *) local_syms))
12466 stub_entry->stub_type = stub_type;
12467 if (stub_type != ppc_stub_plt_call
12468 && stub_type != ppc_stub_plt_call_r2save)
12470 stub_entry->target_value = code_value;
12471 stub_entry->target_section = code_sec;
12475 stub_entry->target_value = sym_value;
12476 stub_entry->target_section = sym_sec;
12478 stub_entry->h = hash;
12479 stub_entry->plt_ent = plt_ent;
12480 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12482 if (stub_entry->h != NULL)
12483 htab->stub_globals += 1;
12486 /* We're done with the internal relocs, free them. */
12487 if (elf_section_data (section)->relocs != internal_relocs)
12488 free (internal_relocs);
12491 if (local_syms != NULL
12492 && symtab_hdr->contents != (unsigned char *) local_syms)
12494 if (!info->keep_memory)
12497 symtab_hdr->contents = (unsigned char *) local_syms;
12501 /* We may have added some stubs. Find out the new size of the
12503 for (stub_sec = htab->params->stub_bfd->sections;
12505 stub_sec = stub_sec->next)
12506 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12508 stub_sec->rawsize = stub_sec->size;
12509 stub_sec->size = 0;
12510 stub_sec->reloc_count = 0;
12511 stub_sec->flags &= ~SEC_RELOC;
12514 htab->brlt->size = 0;
12515 htab->brlt->reloc_count = 0;
12516 htab->brlt->flags &= ~SEC_RELOC;
12517 if (htab->relbrlt != NULL)
12518 htab->relbrlt->size = 0;
12520 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12522 for (group = htab->group; group != NULL; group = group->next)
12523 if (group->needs_save_res)
12524 group->stub_sec->size += htab->sfpr->size;
12526 if (info->emitrelocations
12527 && htab->glink != NULL && htab->glink->size != 0)
12529 htab->glink->reloc_count = 1;
12530 htab->glink->flags |= SEC_RELOC;
12533 if (htab->glink_eh_frame != NULL
12534 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12535 && htab->glink_eh_frame->output_section->size != 0)
12537 size_t size = 0, align;
12539 for (stub_sec = htab->params->stub_bfd->sections;
12541 stub_sec = stub_sec->next)
12542 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12544 if (htab->glink != NULL && htab->glink->size != 0)
12547 size += sizeof (glink_eh_frame_cie);
12549 align <<= htab->glink_eh_frame->output_section->alignment_power;
12551 size = (size + align) & ~align;
12552 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12553 htab->glink_eh_frame->size = size;
12556 if (htab->params->plt_stub_align != 0)
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->size = ((stub_sec->size
12562 + (1 << htab->params->plt_stub_align) - 1)
12563 & -(1 << htab->params->plt_stub_align));
12565 for (stub_sec = htab->params->stub_bfd->sections;
12567 stub_sec = stub_sec->next)
12568 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12569 && stub_sec->rawsize != stub_sec->size
12570 && (htab->stub_iteration <= STUB_SHRINK_ITER
12571 || stub_sec->rawsize < stub_sec->size))
12574 if (stub_sec == NULL
12575 && (htab->glink_eh_frame == NULL
12576 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12579 /* Ask the linker to do its stuff. */
12580 (*htab->params->layout_sections_again) ();
12583 if (htab->glink_eh_frame != NULL
12584 && htab->glink_eh_frame->size != 0)
12587 bfd_byte *p, *last_fde;
12588 size_t last_fde_len, size, align, pad;
12589 asection *stub_sec;
12591 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12594 htab->glink_eh_frame->contents = p;
12597 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12598 /* CIE length (rewrite in case little-endian). */
12599 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12600 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12601 p += sizeof (glink_eh_frame_cie);
12603 for (stub_sec = htab->params->stub_bfd->sections;
12605 stub_sec = stub_sec->next)
12606 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12611 bfd_put_32 (htab->elf.dynobj, 20, p);
12614 val = p - htab->glink_eh_frame->contents;
12615 bfd_put_32 (htab->elf.dynobj, val, p);
12617 /* Offset to stub section, written later. */
12619 /* stub section size. */
12620 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12622 /* Augmentation. */
12627 if (htab->glink != NULL && htab->glink->size != 0)
12632 bfd_put_32 (htab->elf.dynobj, 20, p);
12635 val = p - htab->glink_eh_frame->contents;
12636 bfd_put_32 (htab->elf.dynobj, val, p);
12638 /* Offset to .glink, written later. */
12641 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12643 /* Augmentation. */
12646 *p++ = DW_CFA_advance_loc + 1;
12647 *p++ = DW_CFA_register;
12649 *p++ = htab->opd_abi ? 12 : 0;
12650 *p++ = DW_CFA_advance_loc + 4;
12651 *p++ = DW_CFA_restore_extended;
12654 /* Subsume any padding into the last FDE if user .eh_frame
12655 sections are aligned more than glink_eh_frame. Otherwise any
12656 zero padding will be seen as a terminator. */
12657 size = p - htab->glink_eh_frame->contents;
12659 align <<= htab->glink_eh_frame->output_section->alignment_power;
12661 pad = ((size + align) & ~align) - size;
12662 htab->glink_eh_frame->size = size + pad;
12663 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12666 maybe_strip_output (info, htab->brlt);
12667 if (htab->glink_eh_frame != NULL)
12668 maybe_strip_output (info, htab->glink_eh_frame);
12673 /* Called after we have determined section placement. If sections
12674 move, we'll be called again. Provide a value for TOCstart. */
12677 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12680 bfd_vma TOCstart, adjust;
12684 struct elf_link_hash_entry *h;
12685 struct elf_link_hash_table *htab = elf_hash_table (info);
12687 if (is_elf_hash_table (htab)
12688 && htab->hgot != NULL)
12692 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12693 if (is_elf_hash_table (htab))
12697 && h->root.type == bfd_link_hash_defined
12698 && !h->root.linker_def
12699 && (!is_elf_hash_table (htab)
12700 || h->def_regular))
12702 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12703 + h->root.u.def.section->output_offset
12704 + h->root.u.def.section->output_section->vma);
12705 _bfd_set_gp_value (obfd, TOCstart);
12710 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12711 order. The TOC starts where the first of these sections starts. */
12712 s = bfd_get_section_by_name (obfd, ".got");
12713 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12714 s = bfd_get_section_by_name (obfd, ".toc");
12715 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12716 s = bfd_get_section_by_name (obfd, ".tocbss");
12717 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12718 s = bfd_get_section_by_name (obfd, ".plt");
12719 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12721 /* This may happen for
12722 o references to TOC base (SYM@toc / TOC[tc0]) without a
12724 o bad linker script
12725 o --gc-sections and empty TOC sections
12727 FIXME: Warn user? */
12729 /* Look for a likely section. We probably won't even be
12731 for (s = obfd->sections; s != NULL; s = s->next)
12732 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12734 == (SEC_ALLOC | SEC_SMALL_DATA))
12737 for (s = obfd->sections; s != NULL; s = s->next)
12738 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12739 == (SEC_ALLOC | SEC_SMALL_DATA))
12742 for (s = obfd->sections; s != NULL; s = s->next)
12743 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12747 for (s = obfd->sections; s != NULL; s = s->next)
12748 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12754 TOCstart = s->output_section->vma + s->output_offset;
12756 /* Force alignment. */
12757 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12758 TOCstart -= adjust;
12759 _bfd_set_gp_value (obfd, TOCstart);
12761 if (info != NULL && s != NULL)
12763 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12767 if (htab->elf.hgot != NULL)
12769 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
12770 htab->elf.hgot->root.u.def.section = s;
12775 struct bfd_link_hash_entry *bh = NULL;
12776 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12777 s, TOC_BASE_OFF - adjust,
12778 NULL, FALSE, FALSE, &bh);
12784 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12785 write out any global entry stubs. */
12788 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12790 struct bfd_link_info *info;
12791 struct ppc_link_hash_table *htab;
12792 struct plt_entry *pent;
12795 if (h->root.type == bfd_link_hash_indirect)
12798 if (!h->pointer_equality_needed)
12801 if (h->def_regular)
12805 htab = ppc_hash_table (info);
12810 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12811 if (pent->plt.offset != (bfd_vma) -1
12812 && pent->addend == 0)
12818 p = s->contents + h->root.u.def.value;
12819 plt = htab->elf.splt;
12820 if (!htab->elf.dynamic_sections_created
12821 || h->dynindx == -1)
12822 plt = htab->elf.iplt;
12823 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12824 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12826 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12828 info->callbacks->einfo
12829 (_("%P: linkage table error against `%T'\n"),
12830 h->root.root.string);
12831 bfd_set_error (bfd_error_bad_value);
12832 htab->stub_error = TRUE;
12835 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12836 if (htab->params->emit_stub_syms)
12838 size_t len = strlen (h->root.root.string);
12839 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12844 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12845 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12848 if (h->root.type == bfd_link_hash_new)
12850 h->root.type = bfd_link_hash_defined;
12851 h->root.u.def.section = s;
12852 h->root.u.def.value = p - s->contents;
12853 h->ref_regular = 1;
12854 h->def_regular = 1;
12855 h->ref_regular_nonweak = 1;
12856 h->forced_local = 1;
12858 h->root.linker_def = 1;
12862 if (PPC_HA (off) != 0)
12864 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12867 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12869 bfd_put_32 (s->owner, MTCTR_R12, p);
12871 bfd_put_32 (s->owner, BCTR, p);
12877 /* Build all the stubs associated with the current output file.
12878 The stubs are kept in a hash table attached to the main linker
12879 hash table. This function is called via gldelf64ppc_finish. */
12882 ppc64_elf_build_stubs (struct bfd_link_info *info,
12885 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12886 struct map_stub *group;
12887 asection *stub_sec;
12889 int stub_sec_count = 0;
12894 /* Allocate memory to hold the linker stubs. */
12895 for (stub_sec = htab->params->stub_bfd->sections;
12897 stub_sec = stub_sec->next)
12898 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12899 && stub_sec->size != 0)
12901 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12902 if (stub_sec->contents == NULL)
12904 stub_sec->size = 0;
12907 if (htab->glink != NULL && htab->glink->size != 0)
12912 /* Build the .glink plt call stub. */
12913 if (htab->params->emit_stub_syms)
12915 struct elf_link_hash_entry *h;
12916 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12917 TRUE, FALSE, FALSE);
12920 if (h->root.type == bfd_link_hash_new)
12922 h->root.type = bfd_link_hash_defined;
12923 h->root.u.def.section = htab->glink;
12924 h->root.u.def.value = 8;
12925 h->ref_regular = 1;
12926 h->def_regular = 1;
12927 h->ref_regular_nonweak = 1;
12928 h->forced_local = 1;
12930 h->root.linker_def = 1;
12933 plt0 = (htab->elf.splt->output_section->vma
12934 + htab->elf.splt->output_offset
12936 if (info->emitrelocations)
12938 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12941 r->r_offset = (htab->glink->output_offset
12942 + htab->glink->output_section->vma);
12943 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12944 r->r_addend = plt0;
12946 p = htab->glink->contents;
12947 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12948 bfd_put_64 (htab->glink->owner, plt0, p);
12952 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12954 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12956 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12958 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12960 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12962 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12964 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12966 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12968 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12970 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12975 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12977 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12979 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12981 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12983 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12985 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12987 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12989 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12991 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12993 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12995 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12997 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13000 bfd_put_32 (htab->glink->owner, BCTR, p);
13002 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13004 bfd_put_32 (htab->glink->owner, NOP, p);
13008 /* Build the .glink lazy link call stubs. */
13010 while (p < htab->glink->contents + htab->glink->rawsize)
13016 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13021 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13023 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13028 bfd_put_32 (htab->glink->owner,
13029 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13034 /* Build .glink global entry stubs. */
13035 if (htab->glink->size > htab->glink->rawsize)
13036 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13039 if (htab->brlt != NULL && htab->brlt->size != 0)
13041 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13043 if (htab->brlt->contents == NULL)
13046 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13048 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13049 htab->relbrlt->size);
13050 if (htab->relbrlt->contents == NULL)
13054 /* Build the stubs as directed by the stub hash table. */
13055 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13057 for (group = htab->group; group != NULL; group = group->next)
13058 if (group->needs_save_res)
13060 stub_sec = group->stub_sec;
13061 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13063 if (htab->params->emit_stub_syms)
13067 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13068 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13071 stub_sec->size += htab->sfpr->size;
13074 if (htab->relbrlt != NULL)
13075 htab->relbrlt->reloc_count = 0;
13077 if (htab->params->plt_stub_align != 0)
13078 for (stub_sec = htab->params->stub_bfd->sections;
13080 stub_sec = stub_sec->next)
13081 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13082 stub_sec->size = ((stub_sec->size
13083 + (1 << htab->params->plt_stub_align) - 1)
13084 & -(1 << htab->params->plt_stub_align));
13086 for (stub_sec = htab->params->stub_bfd->sections;
13088 stub_sec = stub_sec->next)
13089 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13091 stub_sec_count += 1;
13092 if (stub_sec->rawsize != stub_sec->size
13093 && (htab->stub_iteration <= STUB_SHRINK_ITER
13094 || stub_sec->rawsize < stub_sec->size))
13098 /* Note that the glink_eh_frame check here is not only testing that
13099 the generated size matched the calculated size but also that
13100 bfd_elf_discard_info didn't make any changes to the section. */
13101 if (stub_sec != NULL
13102 || (htab->glink_eh_frame != NULL
13103 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
13105 htab->stub_error = TRUE;
13106 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13109 if (htab->stub_error)
13114 *stats = bfd_malloc (500);
13115 if (*stats == NULL)
13118 sprintf (*stats, _("linker stubs in %u group%s\n"
13120 " toc adjust %lu\n"
13121 " long branch %lu\n"
13122 " long toc adj %lu\n"
13124 " plt call toc %lu\n"
13125 " global entry %lu"),
13127 stub_sec_count == 1 ? "" : "s",
13128 htab->stub_count[ppc_stub_long_branch - 1],
13129 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13130 htab->stub_count[ppc_stub_plt_branch - 1],
13131 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13132 htab->stub_count[ppc_stub_plt_call - 1],
13133 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13134 htab->stub_count[ppc_stub_global_entry - 1]);
13139 /* This function undoes the changes made by add_symbol_adjust. */
13142 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
13144 struct ppc_link_hash_entry *eh;
13146 if (h->root.type == bfd_link_hash_indirect)
13149 eh = (struct ppc_link_hash_entry *) h;
13150 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
13153 eh->elf.root.type = bfd_link_hash_undefined;
13158 ppc64_elf_restore_symbols (struct bfd_link_info *info)
13160 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13163 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
13166 /* What to do when ld finds relocations against symbols defined in
13167 discarded sections. */
13169 static unsigned int
13170 ppc64_elf_action_discarded (asection *sec)
13172 if (strcmp (".opd", sec->name) == 0)
13175 if (strcmp (".toc", sec->name) == 0)
13178 if (strcmp (".toc1", sec->name) == 0)
13181 return _bfd_elf_default_action_discarded (sec);
13184 /* The RELOCATE_SECTION function is called by the ELF backend linker
13185 to handle the relocations for a section.
13187 The relocs are always passed as Rela structures; if the section
13188 actually uses Rel structures, the r_addend field will always be
13191 This function is responsible for adjust the section contents as
13192 necessary, and (if using Rela relocs and generating a
13193 relocatable output file) adjusting the reloc addend as
13196 This function does not have to worry about setting the reloc
13197 address or the reloc symbol index.
13199 LOCAL_SYMS is a pointer to the swapped in local symbols.
13201 LOCAL_SECTIONS is an array giving the section in the input file
13202 corresponding to the st_shndx field of each local symbol.
13204 The global hash table entry for the global symbols can be found
13205 via elf_sym_hashes (input_bfd).
13207 When generating relocatable output, this function must handle
13208 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13209 going to be the section symbol corresponding to the output
13210 section, which means that the addend must be adjusted
13214 ppc64_elf_relocate_section (bfd *output_bfd,
13215 struct bfd_link_info *info,
13217 asection *input_section,
13218 bfd_byte *contents,
13219 Elf_Internal_Rela *relocs,
13220 Elf_Internal_Sym *local_syms,
13221 asection **local_sections)
13223 struct ppc_link_hash_table *htab;
13224 Elf_Internal_Shdr *symtab_hdr;
13225 struct elf_link_hash_entry **sym_hashes;
13226 Elf_Internal_Rela *rel;
13227 Elf_Internal_Rela *wrel;
13228 Elf_Internal_Rela *relend;
13229 Elf_Internal_Rela outrel;
13231 struct got_entry **local_got_ents;
13233 bfd_boolean ret = TRUE;
13234 bfd_boolean is_opd;
13235 /* Assume 'at' branch hints. */
13236 bfd_boolean is_isa_v2 = TRUE;
13237 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
13239 /* Initialize howto table if needed. */
13240 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13243 htab = ppc_hash_table (info);
13247 /* Don't relocate stub sections. */
13248 if (input_section->owner == htab->params->stub_bfd)
13251 BFD_ASSERT (is_ppc64_elf (input_bfd));
13253 local_got_ents = elf_local_got_ents (input_bfd);
13254 TOCstart = elf_gp (output_bfd);
13255 symtab_hdr = &elf_symtab_hdr (input_bfd);
13256 sym_hashes = elf_sym_hashes (input_bfd);
13257 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13259 rel = wrel = relocs;
13260 relend = relocs + input_section->reloc_count;
13261 for (; rel < relend; wrel++, rel++)
13263 enum elf_ppc64_reloc_type r_type;
13265 bfd_reloc_status_type r;
13266 Elf_Internal_Sym *sym;
13268 struct elf_link_hash_entry *h_elf;
13269 struct ppc_link_hash_entry *h;
13270 struct ppc_link_hash_entry *fdh;
13271 const char *sym_name;
13272 unsigned long r_symndx, toc_symndx;
13273 bfd_vma toc_addend;
13274 unsigned char tls_mask, tls_gd, tls_type;
13275 unsigned char sym_type;
13276 bfd_vma relocation;
13277 bfd_boolean unresolved_reloc;
13278 bfd_boolean warned;
13279 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13282 struct ppc_stub_hash_entry *stub_entry;
13283 bfd_vma max_br_offset;
13285 Elf_Internal_Rela orig_rel;
13286 reloc_howto_type *howto;
13287 struct reloc_howto_struct alt_howto;
13292 r_type = ELF64_R_TYPE (rel->r_info);
13293 r_symndx = ELF64_R_SYM (rel->r_info);
13295 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13296 symbol of the previous ADDR64 reloc. The symbol gives us the
13297 proper TOC base to use. */
13298 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13300 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13302 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13308 unresolved_reloc = FALSE;
13311 if (r_symndx < symtab_hdr->sh_info)
13313 /* It's a local symbol. */
13314 struct _opd_sec_data *opd;
13316 sym = local_syms + r_symndx;
13317 sec = local_sections[r_symndx];
13318 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13319 sym_type = ELF64_ST_TYPE (sym->st_info);
13320 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13321 opd = get_opd_info (sec);
13322 if (opd != NULL && opd->adjust != NULL)
13324 long adjust = opd->adjust[OPD_NDX (sym->st_value
13330 /* If this is a relocation against the opd section sym
13331 and we have edited .opd, adjust the reloc addend so
13332 that ld -r and ld --emit-relocs output is correct.
13333 If it is a reloc against some other .opd symbol,
13334 then the symbol value will be adjusted later. */
13335 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13336 rel->r_addend += adjust;
13338 relocation += adjust;
13344 bfd_boolean ignored;
13346 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13347 r_symndx, symtab_hdr, sym_hashes,
13348 h_elf, sec, relocation,
13349 unresolved_reloc, warned, ignored);
13350 sym_name = h_elf->root.root.string;
13351 sym_type = h_elf->type;
13353 && sec->owner == output_bfd
13354 && strcmp (sec->name, ".opd") == 0)
13356 /* This is a symbol defined in a linker script. All
13357 such are defined in output sections, even those
13358 defined by simple assignment from a symbol defined in
13359 an input section. Transfer the symbol to an
13360 appropriate input .opd section, so that a branch to
13361 this symbol will be mapped to the location specified
13362 by the opd entry. */
13363 struct bfd_link_order *lo;
13364 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13365 if (lo->type == bfd_indirect_link_order)
13367 asection *isec = lo->u.indirect.section;
13368 if (h_elf->root.u.def.value >= isec->output_offset
13369 && h_elf->root.u.def.value < (isec->output_offset
13372 h_elf->root.u.def.value -= isec->output_offset;
13373 h_elf->root.u.def.section = isec;
13380 h = (struct ppc_link_hash_entry *) h_elf;
13382 if (sec != NULL && discarded_section (sec))
13384 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13385 input_bfd, input_section,
13386 contents + rel->r_offset);
13387 wrel->r_offset = rel->r_offset;
13389 wrel->r_addend = 0;
13391 /* For ld -r, remove relocations in debug sections against
13392 sections defined in discarded sections. Not done for
13393 non-debug to preserve relocs in .eh_frame which the
13394 eh_frame editing code expects to be present. */
13395 if (bfd_link_relocatable (info)
13396 && (input_section->flags & SEC_DEBUGGING))
13402 if (bfd_link_relocatable (info))
13405 if (h != NULL && &h->elf == htab->elf.hgot)
13407 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13408 sec = bfd_abs_section_ptr;
13409 unresolved_reloc = FALSE;
13412 /* TLS optimizations. Replace instruction sequences and relocs
13413 based on information we collected in tls_optimize. We edit
13414 RELOCS so that --emit-relocs will output something sensible
13415 for the final instruction stream. */
13420 tls_mask = h->tls_mask;
13421 else if (local_got_ents != NULL)
13423 struct plt_entry **local_plt = (struct plt_entry **)
13424 (local_got_ents + symtab_hdr->sh_info);
13425 unsigned char *lgot_masks = (unsigned char *)
13426 (local_plt + symtab_hdr->sh_info);
13427 tls_mask = lgot_masks[r_symndx];
13430 && (r_type == R_PPC64_TLS
13431 || r_type == R_PPC64_TLSGD
13432 || r_type == R_PPC64_TLSLD))
13434 /* Check for toc tls entries. */
13435 unsigned char *toc_tls;
13437 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13438 &local_syms, rel, input_bfd))
13442 tls_mask = *toc_tls;
13445 /* Check that tls relocs are used with tls syms, and non-tls
13446 relocs are used with non-tls syms. */
13447 if (r_symndx != STN_UNDEF
13448 && r_type != R_PPC64_NONE
13450 || h->elf.root.type == bfd_link_hash_defined
13451 || h->elf.root.type == bfd_link_hash_defweak)
13452 && (IS_PPC64_TLS_RELOC (r_type)
13453 != (sym_type == STT_TLS
13454 || (sym_type == STT_SECTION
13455 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13458 && (r_type == R_PPC64_TLS
13459 || r_type == R_PPC64_TLSGD
13460 || r_type == R_PPC64_TLSLD))
13461 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13464 info->callbacks->einfo
13465 (!IS_PPC64_TLS_RELOC (r_type)
13466 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13467 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13468 input_bfd, input_section, rel->r_offset,
13469 ppc64_elf_howto_table[r_type]->name,
13473 /* Ensure reloc mapping code below stays sane. */
13474 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13475 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13476 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13477 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13478 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13479 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13480 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13481 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13482 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13483 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13491 case R_PPC64_LO_DS_OPT:
13492 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13493 if ((insn & (0x3f << 26)) != 58u << 26)
13495 insn += (14u << 26) - (58u << 26);
13496 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13497 r_type = R_PPC64_TOC16_LO;
13498 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13501 case R_PPC64_TOC16:
13502 case R_PPC64_TOC16_LO:
13503 case R_PPC64_TOC16_DS:
13504 case R_PPC64_TOC16_LO_DS:
13506 /* Check for toc tls entries. */
13507 unsigned char *toc_tls;
13510 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13511 &local_syms, rel, input_bfd);
13517 tls_mask = *toc_tls;
13518 if (r_type == R_PPC64_TOC16_DS
13519 || r_type == R_PPC64_TOC16_LO_DS)
13522 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13527 /* If we found a GD reloc pair, then we might be
13528 doing a GD->IE transition. */
13531 tls_gd = TLS_TPRELGD;
13532 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13535 else if (retval == 3)
13537 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13545 case R_PPC64_GOT_TPREL16_HI:
13546 case R_PPC64_GOT_TPREL16_HA:
13548 && (tls_mask & TLS_TPREL) == 0)
13550 rel->r_offset -= d_offset;
13551 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13552 r_type = R_PPC64_NONE;
13553 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13557 case R_PPC64_GOT_TPREL16_DS:
13558 case R_PPC64_GOT_TPREL16_LO_DS:
13560 && (tls_mask & TLS_TPREL) == 0)
13563 insn = bfd_get_32 (output_bfd,
13564 contents + rel->r_offset - d_offset);
13566 insn |= 0x3c0d0000; /* addis 0,13,0 */
13567 bfd_put_32 (output_bfd, insn,
13568 contents + rel->r_offset - d_offset);
13569 r_type = R_PPC64_TPREL16_HA;
13570 if (toc_symndx != 0)
13572 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13573 rel->r_addend = toc_addend;
13574 /* We changed the symbol. Start over in order to
13575 get h, sym, sec etc. right. */
13579 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13585 && (tls_mask & TLS_TPREL) == 0)
13587 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13588 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13591 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13592 /* Was PPC64_TLS which sits on insn boundary, now
13593 PPC64_TPREL16_LO which is at low-order half-word. */
13594 rel->r_offset += d_offset;
13595 r_type = R_PPC64_TPREL16_LO;
13596 if (toc_symndx != 0)
13598 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13599 rel->r_addend = toc_addend;
13600 /* We changed the symbol. Start over in order to
13601 get h, sym, sec etc. right. */
13605 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13609 case R_PPC64_GOT_TLSGD16_HI:
13610 case R_PPC64_GOT_TLSGD16_HA:
13611 tls_gd = TLS_TPRELGD;
13612 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13616 case R_PPC64_GOT_TLSLD16_HI:
13617 case R_PPC64_GOT_TLSLD16_HA:
13618 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13621 if ((tls_mask & tls_gd) != 0)
13622 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13623 + R_PPC64_GOT_TPREL16_DS);
13626 rel->r_offset -= d_offset;
13627 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13628 r_type = R_PPC64_NONE;
13630 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13634 case R_PPC64_GOT_TLSGD16:
13635 case R_PPC64_GOT_TLSGD16_LO:
13636 tls_gd = TLS_TPRELGD;
13637 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13641 case R_PPC64_GOT_TLSLD16:
13642 case R_PPC64_GOT_TLSLD16_LO:
13643 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13645 unsigned int insn1, insn2, insn3;
13649 offset = (bfd_vma) -1;
13650 /* If not using the newer R_PPC64_TLSGD/LD to mark
13651 __tls_get_addr calls, we must trust that the call
13652 stays with its arg setup insns, ie. that the next
13653 reloc is the __tls_get_addr call associated with
13654 the current reloc. Edit both insns. */
13655 if (input_section->has_tls_get_addr_call
13656 && rel + 1 < relend
13657 && branch_reloc_hash_match (input_bfd, rel + 1,
13658 htab->tls_get_addr,
13659 htab->tls_get_addr_fd))
13660 offset = rel[1].r_offset;
13661 /* We read the low GOT_TLS (or TOC16) insn because we
13662 need to keep the destination reg. It may be
13663 something other than the usual r3, and moved to r3
13664 before the call by intervening code. */
13665 insn1 = bfd_get_32 (output_bfd,
13666 contents + rel->r_offset - d_offset);
13667 if ((tls_mask & tls_gd) != 0)
13670 insn1 &= (0x1f << 21) | (0x1f << 16);
13671 insn1 |= 58 << 26; /* ld */
13672 insn2 = 0x7c636a14; /* add 3,3,13 */
13673 if (offset != (bfd_vma) -1)
13674 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13675 if ((tls_mask & TLS_EXPLICIT) == 0)
13676 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13677 + R_PPC64_GOT_TPREL16_DS);
13679 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13680 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13685 insn1 &= 0x1f << 21;
13686 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13687 insn2 = 0x38630000; /* addi 3,3,0 */
13690 /* Was an LD reloc. */
13692 sec = local_sections[toc_symndx];
13694 r_symndx < symtab_hdr->sh_info;
13696 if (local_sections[r_symndx] == sec)
13698 if (r_symndx >= symtab_hdr->sh_info)
13699 r_symndx = STN_UNDEF;
13700 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13701 if (r_symndx != STN_UNDEF)
13702 rel->r_addend -= (local_syms[r_symndx].st_value
13703 + sec->output_offset
13704 + sec->output_section->vma);
13706 else if (toc_symndx != 0)
13708 r_symndx = toc_symndx;
13709 rel->r_addend = toc_addend;
13711 r_type = R_PPC64_TPREL16_HA;
13712 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13713 if (offset != (bfd_vma) -1)
13715 rel[1].r_info = ELF64_R_INFO (r_symndx,
13716 R_PPC64_TPREL16_LO);
13717 rel[1].r_offset = offset + d_offset;
13718 rel[1].r_addend = rel->r_addend;
13721 bfd_put_32 (output_bfd, insn1,
13722 contents + rel->r_offset - d_offset);
13723 if (offset != (bfd_vma) -1)
13725 insn3 = bfd_get_32 (output_bfd,
13726 contents + offset + 4);
13728 || insn3 == CROR_151515 || insn3 == CROR_313131)
13730 rel[1].r_offset += 4;
13731 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13734 bfd_put_32 (output_bfd, insn2, contents + offset);
13736 if ((tls_mask & tls_gd) == 0
13737 && (tls_gd == 0 || toc_symndx != 0))
13739 /* We changed the symbol. Start over in order
13740 to get h, sym, sec etc. right. */
13746 case R_PPC64_TLSGD:
13747 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13749 unsigned int insn2, insn3;
13750 bfd_vma offset = rel->r_offset;
13752 if ((tls_mask & TLS_TPRELGD) != 0)
13755 r_type = R_PPC64_NONE;
13756 insn2 = 0x7c636a14; /* add 3,3,13 */
13761 if (toc_symndx != 0)
13763 r_symndx = toc_symndx;
13764 rel->r_addend = toc_addend;
13766 r_type = R_PPC64_TPREL16_LO;
13767 rel->r_offset = offset + d_offset;
13768 insn2 = 0x38630000; /* addi 3,3,0 */
13770 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13771 /* Zap the reloc on the _tls_get_addr call too. */
13772 BFD_ASSERT (offset == rel[1].r_offset);
13773 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13774 insn3 = bfd_get_32 (output_bfd,
13775 contents + offset + 4);
13777 || insn3 == CROR_151515 || insn3 == CROR_313131)
13779 rel->r_offset += 4;
13780 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13783 bfd_put_32 (output_bfd, insn2, contents + offset);
13784 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13789 case R_PPC64_TLSLD:
13790 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13792 unsigned int insn2, insn3;
13793 bfd_vma offset = rel->r_offset;
13796 sec = local_sections[toc_symndx];
13798 r_symndx < symtab_hdr->sh_info;
13800 if (local_sections[r_symndx] == sec)
13802 if (r_symndx >= symtab_hdr->sh_info)
13803 r_symndx = STN_UNDEF;
13804 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13805 if (r_symndx != STN_UNDEF)
13806 rel->r_addend -= (local_syms[r_symndx].st_value
13807 + sec->output_offset
13808 + sec->output_section->vma);
13810 r_type = R_PPC64_TPREL16_LO;
13811 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13812 rel->r_offset = offset + d_offset;
13813 /* Zap the reloc on the _tls_get_addr call too. */
13814 BFD_ASSERT (offset == rel[1].r_offset);
13815 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13816 insn2 = 0x38630000; /* addi 3,3,0 */
13817 insn3 = bfd_get_32 (output_bfd,
13818 contents + offset + 4);
13820 || insn3 == CROR_151515 || insn3 == CROR_313131)
13822 rel->r_offset += 4;
13823 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13826 bfd_put_32 (output_bfd, insn2, contents + offset);
13831 case R_PPC64_DTPMOD64:
13832 if (rel + 1 < relend
13833 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13834 && rel[1].r_offset == rel->r_offset + 8)
13836 if ((tls_mask & TLS_GD) == 0)
13838 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13839 if ((tls_mask & TLS_TPRELGD) != 0)
13840 r_type = R_PPC64_TPREL64;
13843 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13844 r_type = R_PPC64_NONE;
13846 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13851 if ((tls_mask & TLS_LD) == 0)
13853 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13854 r_type = R_PPC64_NONE;
13855 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13860 case R_PPC64_TPREL64:
13861 if ((tls_mask & TLS_TPREL) == 0)
13863 r_type = R_PPC64_NONE;
13864 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13868 case R_PPC64_ENTRY:
13869 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13870 if (!bfd_link_pic (info)
13871 && !info->traditional_format
13872 && relocation + 0x80008000 <= 0xffffffff)
13874 unsigned int insn1, insn2;
13876 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13877 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13878 if ((insn1 & ~0xfffc) == LD_R2_0R12
13879 && insn2 == ADD_R2_R2_R12)
13881 bfd_put_32 (output_bfd,
13882 LIS_R2 + PPC_HA (relocation),
13883 contents + rel->r_offset);
13884 bfd_put_32 (output_bfd,
13885 ADDI_R2_R2 + PPC_LO (relocation),
13886 contents + rel->r_offset + 4);
13891 relocation -= (rel->r_offset
13892 + input_section->output_offset
13893 + input_section->output_section->vma);
13894 if (relocation + 0x80008000 <= 0xffffffff)
13896 unsigned int insn1, insn2;
13898 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13899 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13900 if ((insn1 & ~0xfffc) == LD_R2_0R12
13901 && insn2 == ADD_R2_R2_R12)
13903 bfd_put_32 (output_bfd,
13904 ADDIS_R2_R12 + PPC_HA (relocation),
13905 contents + rel->r_offset);
13906 bfd_put_32 (output_bfd,
13907 ADDI_R2_R2 + PPC_LO (relocation),
13908 contents + rel->r_offset + 4);
13914 case R_PPC64_REL16_HA:
13915 /* If we are generating a non-PIC executable, edit
13916 . 0: addis 2,12,.TOC.-0b@ha
13917 . addi 2,2,.TOC.-0b@l
13918 used by ELFv2 global entry points to set up r2, to
13921 if .TOC. is in range. */
13922 if (!bfd_link_pic (info)
13923 && !info->traditional_format
13925 && rel->r_addend == d_offset
13926 && h != NULL && &h->elf == htab->elf.hgot
13927 && rel + 1 < relend
13928 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13929 && rel[1].r_offset == rel->r_offset + 4
13930 && rel[1].r_addend == rel->r_addend + 4
13931 && relocation + 0x80008000 <= 0xffffffff)
13933 unsigned int insn1, insn2;
13934 bfd_vma offset = rel->r_offset - d_offset;
13935 insn1 = bfd_get_32 (output_bfd, contents + offset);
13936 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13937 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
13938 && (insn2 & 0xffff0000) == ADDI_R2_R2)
13940 r_type = R_PPC64_ADDR16_HA;
13941 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13942 rel->r_addend -= d_offset;
13943 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13944 rel[1].r_addend -= d_offset + 4;
13945 bfd_put_32 (output_bfd, LIS_R2, contents + offset);
13951 /* Handle other relocations that tweak non-addend part of insn. */
13953 max_br_offset = 1 << 25;
13954 addend = rel->r_addend;
13955 reloc_dest = DEST_NORMAL;
13961 case R_PPC64_TOCSAVE:
13962 if (relocation + addend == (rel->r_offset
13963 + input_section->output_offset
13964 + input_section->output_section->vma)
13965 && tocsave_find (htab, NO_INSERT,
13966 &local_syms, rel, input_bfd))
13968 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13970 || insn == CROR_151515 || insn == CROR_313131)
13971 bfd_put_32 (input_bfd,
13972 STD_R2_0R1 + STK_TOC (htab),
13973 contents + rel->r_offset);
13977 /* Branch taken prediction relocations. */
13978 case R_PPC64_ADDR14_BRTAKEN:
13979 case R_PPC64_REL14_BRTAKEN:
13980 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13983 /* Branch not taken prediction relocations. */
13984 case R_PPC64_ADDR14_BRNTAKEN:
13985 case R_PPC64_REL14_BRNTAKEN:
13986 insn |= bfd_get_32 (output_bfd,
13987 contents + rel->r_offset) & ~(0x01 << 21);
13990 case R_PPC64_REL14:
13991 max_br_offset = 1 << 15;
13994 case R_PPC64_REL24:
13995 /* Calls to functions with a different TOC, such as calls to
13996 shared objects, need to alter the TOC pointer. This is
13997 done using a linkage stub. A REL24 branching to these
13998 linkage stubs needs to be followed by a nop, as the nop
13999 will be replaced with an instruction to restore the TOC
14004 && h->oh->is_func_descriptor)
14005 fdh = ppc_follow_link (h->oh);
14006 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14008 if (stub_entry != NULL
14009 && (stub_entry->stub_type == ppc_stub_plt_call
14010 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14011 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14012 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14014 bfd_boolean can_plt_call = FALSE;
14016 /* All of these stubs will modify r2, so there must be a
14017 branch and link followed by a nop. The nop is
14018 replaced by an insn to restore r2. */
14019 if (rel->r_offset + 8 <= input_section->size)
14023 br = bfd_get_32 (input_bfd,
14024 contents + rel->r_offset);
14029 nop = bfd_get_32 (input_bfd,
14030 contents + rel->r_offset + 4);
14032 || nop == CROR_151515 || nop == CROR_313131)
14035 && (h == htab->tls_get_addr_fd
14036 || h == htab->tls_get_addr)
14037 && htab->params->tls_get_addr_opt)
14039 /* Special stub used, leave nop alone. */
14042 bfd_put_32 (input_bfd,
14043 LD_R2_0R1 + STK_TOC (htab),
14044 contents + rel->r_offset + 4);
14045 can_plt_call = TRUE;
14050 if (!can_plt_call && h != NULL)
14052 const char *name = h->elf.root.root.string;
14057 if (strncmp (name, "__libc_start_main", 17) == 0
14058 && (name[17] == 0 || name[17] == '@'))
14060 /* Allow crt1 branch to go via a toc adjusting
14061 stub. Other calls that never return could do
14062 the same, if we could detect such. */
14063 can_plt_call = TRUE;
14069 /* g++ as of 20130507 emits self-calls without a
14070 following nop. This is arguably wrong since we
14071 have conflicting information. On the one hand a
14072 global symbol and on the other a local call
14073 sequence, but don't error for this special case.
14074 It isn't possible to cheaply verify we have
14075 exactly such a call. Allow all calls to the same
14077 asection *code_sec = sec;
14079 if (get_opd_info (sec) != NULL)
14081 bfd_vma off = (relocation + addend
14082 - sec->output_section->vma
14083 - sec->output_offset);
14085 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14087 if (code_sec == input_section)
14088 can_plt_call = TRUE;
14093 if (stub_entry->stub_type == ppc_stub_plt_call
14094 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14095 info->callbacks->einfo
14096 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14097 "recompile with -fPIC\n"),
14098 input_bfd, input_section, rel->r_offset, sym_name);
14100 info->callbacks->einfo
14101 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14102 "(-mcmodel=small toc adjust stub)\n"),
14103 input_bfd, input_section, rel->r_offset, sym_name);
14105 bfd_set_error (bfd_error_bad_value);
14110 && (stub_entry->stub_type == ppc_stub_plt_call
14111 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14112 unresolved_reloc = FALSE;
14115 if ((stub_entry == NULL
14116 || stub_entry->stub_type == ppc_stub_long_branch
14117 || stub_entry->stub_type == ppc_stub_plt_branch)
14118 && get_opd_info (sec) != NULL)
14120 /* The branch destination is the value of the opd entry. */
14121 bfd_vma off = (relocation + addend
14122 - sec->output_section->vma
14123 - sec->output_offset);
14124 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14125 if (dest != (bfd_vma) -1)
14129 reloc_dest = DEST_OPD;
14133 /* If the branch is out of reach we ought to have a long
14135 from = (rel->r_offset
14136 + input_section->output_offset
14137 + input_section->output_section->vma);
14139 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14143 if (stub_entry != NULL
14144 && (stub_entry->stub_type == ppc_stub_long_branch
14145 || stub_entry->stub_type == ppc_stub_plt_branch)
14146 && (r_type == R_PPC64_ADDR14_BRTAKEN
14147 || r_type == R_PPC64_ADDR14_BRNTAKEN
14148 || (relocation + addend - from + max_br_offset
14149 < 2 * max_br_offset)))
14150 /* Don't use the stub if this branch is in range. */
14153 if (stub_entry != NULL)
14155 /* Munge up the value and addend so that we call the stub
14156 rather than the procedure directly. */
14157 asection *stub_sec = stub_entry->group->stub_sec;
14159 if (stub_entry->stub_type == ppc_stub_save_res)
14160 relocation += (stub_sec->output_offset
14161 + stub_sec->output_section->vma
14162 + stub_sec->size - htab->sfpr->size
14163 - htab->sfpr->output_offset
14164 - htab->sfpr->output_section->vma);
14166 relocation = (stub_entry->stub_offset
14167 + stub_sec->output_offset
14168 + stub_sec->output_section->vma);
14170 reloc_dest = DEST_STUB;
14172 if ((stub_entry->stub_type == ppc_stub_plt_call
14173 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14174 && (ALWAYS_EMIT_R2SAVE
14175 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14176 && rel + 1 < relend
14177 && rel[1].r_offset == rel->r_offset + 4
14178 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14186 /* Set 'a' bit. This is 0b00010 in BO field for branch
14187 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14188 for branch on CTR insns (BO == 1a00t or 1a01t). */
14189 if ((insn & (0x14 << 21)) == (0x04 << 21))
14190 insn |= 0x02 << 21;
14191 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14192 insn |= 0x08 << 21;
14198 /* Invert 'y' bit if not the default. */
14199 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14200 insn ^= 0x01 << 21;
14203 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
14206 /* NOP out calls to undefined weak functions.
14207 We can thus call a weak function without first
14208 checking whether the function is defined. */
14210 && h->elf.root.type == bfd_link_hash_undefweak
14211 && h->elf.dynindx == -1
14212 && r_type == R_PPC64_REL24
14216 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
14222 /* Set `addend'. */
14227 info->callbacks->einfo
14228 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14229 input_bfd, (int) r_type, sym_name);
14231 bfd_set_error (bfd_error_bad_value);
14237 case R_PPC64_TLSGD:
14238 case R_PPC64_TLSLD:
14239 case R_PPC64_TOCSAVE:
14240 case R_PPC64_GNU_VTINHERIT:
14241 case R_PPC64_GNU_VTENTRY:
14242 case R_PPC64_ENTRY:
14245 /* GOT16 relocations. Like an ADDR16 using the symbol's
14246 address in the GOT as relocation value instead of the
14247 symbol's value itself. Also, create a GOT entry for the
14248 symbol and put the symbol value there. */
14249 case R_PPC64_GOT_TLSGD16:
14250 case R_PPC64_GOT_TLSGD16_LO:
14251 case R_PPC64_GOT_TLSGD16_HI:
14252 case R_PPC64_GOT_TLSGD16_HA:
14253 tls_type = TLS_TLS | TLS_GD;
14256 case R_PPC64_GOT_TLSLD16:
14257 case R_PPC64_GOT_TLSLD16_LO:
14258 case R_PPC64_GOT_TLSLD16_HI:
14259 case R_PPC64_GOT_TLSLD16_HA:
14260 tls_type = TLS_TLS | TLS_LD;
14263 case R_PPC64_GOT_TPREL16_DS:
14264 case R_PPC64_GOT_TPREL16_LO_DS:
14265 case R_PPC64_GOT_TPREL16_HI:
14266 case R_PPC64_GOT_TPREL16_HA:
14267 tls_type = TLS_TLS | TLS_TPREL;
14270 case R_PPC64_GOT_DTPREL16_DS:
14271 case R_PPC64_GOT_DTPREL16_LO_DS:
14272 case R_PPC64_GOT_DTPREL16_HI:
14273 case R_PPC64_GOT_DTPREL16_HA:
14274 tls_type = TLS_TLS | TLS_DTPREL;
14277 case R_PPC64_GOT16:
14278 case R_PPC64_GOT16_LO:
14279 case R_PPC64_GOT16_HI:
14280 case R_PPC64_GOT16_HA:
14281 case R_PPC64_GOT16_DS:
14282 case R_PPC64_GOT16_LO_DS:
14285 /* Relocation is to the entry for this symbol in the global
14290 unsigned long indx = 0;
14291 struct got_entry *ent;
14293 if (tls_type == (TLS_TLS | TLS_LD)
14295 || !h->elf.def_dynamic))
14296 ent = ppc64_tlsld_got (input_bfd);
14302 bfd_boolean dyn = htab->elf.dynamic_sections_created;
14303 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info),
14305 || (bfd_link_pic (info)
14306 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
14307 /* This is actually a static link, or it is a
14308 -Bsymbolic link and the symbol is defined
14309 locally, or the symbol was forced to be local
14310 because of a version file. */
14314 BFD_ASSERT (h->elf.dynindx != -1);
14315 indx = h->elf.dynindx;
14316 unresolved_reloc = FALSE;
14318 ent = h->elf.got.glist;
14322 if (local_got_ents == NULL)
14324 ent = local_got_ents[r_symndx];
14327 for (; ent != NULL; ent = ent->next)
14328 if (ent->addend == orig_rel.r_addend
14329 && ent->owner == input_bfd
14330 && ent->tls_type == tls_type)
14336 if (ent->is_indirect)
14337 ent = ent->got.ent;
14338 offp = &ent->got.offset;
14339 got = ppc64_elf_tdata (ent->owner)->got;
14343 /* The offset must always be a multiple of 8. We use the
14344 least significant bit to record whether we have already
14345 processed this entry. */
14347 if ((off & 1) != 0)
14351 /* Generate relocs for the dynamic linker, except in
14352 the case of TLSLD where we'll use one entry per
14360 ? h->elf.type == STT_GNU_IFUNC
14361 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14363 relgot = htab->elf.irelplt;
14364 else if ((bfd_link_pic (info) || indx != 0)
14366 || (tls_type == (TLS_TLS | TLS_LD)
14367 && !h->elf.def_dynamic)
14368 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14369 || h->elf.root.type != bfd_link_hash_undefweak))
14370 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14371 if (relgot != NULL)
14373 outrel.r_offset = (got->output_section->vma
14374 + got->output_offset
14376 outrel.r_addend = addend;
14377 if (tls_type & (TLS_LD | TLS_GD))
14379 outrel.r_addend = 0;
14380 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14381 if (tls_type == (TLS_TLS | TLS_GD))
14383 loc = relgot->contents;
14384 loc += (relgot->reloc_count++
14385 * sizeof (Elf64_External_Rela));
14386 bfd_elf64_swap_reloca_out (output_bfd,
14388 outrel.r_offset += 8;
14389 outrel.r_addend = addend;
14391 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14394 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14395 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14396 else if (tls_type == (TLS_TLS | TLS_TPREL))
14397 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14398 else if (indx != 0)
14399 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14403 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14405 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14407 /* Write the .got section contents for the sake
14409 loc = got->contents + off;
14410 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14414 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14416 outrel.r_addend += relocation;
14417 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14419 if (htab->elf.tls_sec == NULL)
14420 outrel.r_addend = 0;
14422 outrel.r_addend -= htab->elf.tls_sec->vma;
14425 loc = relgot->contents;
14426 loc += (relgot->reloc_count++
14427 * sizeof (Elf64_External_Rela));
14428 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14431 /* Init the .got section contents here if we're not
14432 emitting a reloc. */
14435 relocation += addend;
14436 if (tls_type == (TLS_TLS | TLS_LD))
14438 else if (tls_type != 0)
14440 if (htab->elf.tls_sec == NULL)
14444 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14445 if (tls_type == (TLS_TLS | TLS_TPREL))
14446 relocation += DTP_OFFSET - TP_OFFSET;
14449 if (tls_type == (TLS_TLS | TLS_GD))
14451 bfd_put_64 (output_bfd, relocation,
14452 got->contents + off + 8);
14457 bfd_put_64 (output_bfd, relocation,
14458 got->contents + off);
14462 if (off >= (bfd_vma) -2)
14465 relocation = got->output_section->vma + got->output_offset + off;
14466 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14470 case R_PPC64_PLT16_HA:
14471 case R_PPC64_PLT16_HI:
14472 case R_PPC64_PLT16_LO:
14473 case R_PPC64_PLT32:
14474 case R_PPC64_PLT64:
14475 /* Relocation is to the entry for this symbol in the
14476 procedure linkage table. */
14478 struct plt_entry **plt_list = NULL;
14480 plt_list = &h->elf.plt.plist;
14481 else if (local_got_ents != NULL)
14483 struct plt_entry **local_plt = (struct plt_entry **)
14484 (local_got_ents + symtab_hdr->sh_info);
14485 unsigned char *local_got_tls_masks = (unsigned char *)
14486 (local_plt + symtab_hdr->sh_info);
14487 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14488 plt_list = local_plt + r_symndx;
14492 struct plt_entry *ent;
14494 for (ent = *plt_list; ent != NULL; ent = ent->next)
14495 if (ent->plt.offset != (bfd_vma) -1
14496 && ent->addend == orig_rel.r_addend)
14500 plt = htab->elf.splt;
14501 if (!htab->elf.dynamic_sections_created
14503 || h->elf.dynindx == -1)
14504 plt = htab->elf.iplt;
14505 relocation = (plt->output_section->vma
14506 + plt->output_offset
14507 + ent->plt.offset);
14509 unresolved_reloc = FALSE;
14517 /* Relocation value is TOC base. */
14518 relocation = TOCstart;
14519 if (r_symndx == STN_UNDEF)
14520 relocation += htab->sec_info[input_section->id].toc_off;
14521 else if (unresolved_reloc)
14523 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14524 relocation += htab->sec_info[sec->id].toc_off;
14526 unresolved_reloc = TRUE;
14529 /* TOC16 relocs. We want the offset relative to the TOC base,
14530 which is the address of the start of the TOC plus 0x8000.
14531 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14533 case R_PPC64_TOC16:
14534 case R_PPC64_TOC16_LO:
14535 case R_PPC64_TOC16_HI:
14536 case R_PPC64_TOC16_DS:
14537 case R_PPC64_TOC16_LO_DS:
14538 case R_PPC64_TOC16_HA:
14539 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14542 /* Relocate against the beginning of the section. */
14543 case R_PPC64_SECTOFF:
14544 case R_PPC64_SECTOFF_LO:
14545 case R_PPC64_SECTOFF_HI:
14546 case R_PPC64_SECTOFF_DS:
14547 case R_PPC64_SECTOFF_LO_DS:
14548 case R_PPC64_SECTOFF_HA:
14550 addend -= sec->output_section->vma;
14553 case R_PPC64_REL16:
14554 case R_PPC64_REL16_LO:
14555 case R_PPC64_REL16_HI:
14556 case R_PPC64_REL16_HA:
14557 case R_PPC64_REL16DX_HA:
14560 case R_PPC64_REL14:
14561 case R_PPC64_REL14_BRNTAKEN:
14562 case R_PPC64_REL14_BRTAKEN:
14563 case R_PPC64_REL24:
14566 case R_PPC64_TPREL16:
14567 case R_PPC64_TPREL16_LO:
14568 case R_PPC64_TPREL16_HI:
14569 case R_PPC64_TPREL16_HA:
14570 case R_PPC64_TPREL16_DS:
14571 case R_PPC64_TPREL16_LO_DS:
14572 case R_PPC64_TPREL16_HIGH:
14573 case R_PPC64_TPREL16_HIGHA:
14574 case R_PPC64_TPREL16_HIGHER:
14575 case R_PPC64_TPREL16_HIGHERA:
14576 case R_PPC64_TPREL16_HIGHEST:
14577 case R_PPC64_TPREL16_HIGHESTA:
14579 && h->elf.root.type == bfd_link_hash_undefweak
14580 && h->elf.dynindx == -1)
14582 /* Make this relocation against an undefined weak symbol
14583 resolve to zero. This is really just a tweak, since
14584 code using weak externs ought to check that they are
14585 defined before using them. */
14586 bfd_byte *p = contents + rel->r_offset - d_offset;
14588 insn = bfd_get_32 (output_bfd, p);
14589 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14591 bfd_put_32 (output_bfd, insn, p);
14594 if (htab->elf.tls_sec != NULL)
14595 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14596 if (bfd_link_pic (info))
14597 /* The TPREL16 relocs shouldn't really be used in shared
14598 libs as they will result in DT_TEXTREL being set, but
14599 support them anyway. */
14603 case R_PPC64_DTPREL16:
14604 case R_PPC64_DTPREL16_LO:
14605 case R_PPC64_DTPREL16_HI:
14606 case R_PPC64_DTPREL16_HA:
14607 case R_PPC64_DTPREL16_DS:
14608 case R_PPC64_DTPREL16_LO_DS:
14609 case R_PPC64_DTPREL16_HIGH:
14610 case R_PPC64_DTPREL16_HIGHA:
14611 case R_PPC64_DTPREL16_HIGHER:
14612 case R_PPC64_DTPREL16_HIGHERA:
14613 case R_PPC64_DTPREL16_HIGHEST:
14614 case R_PPC64_DTPREL16_HIGHESTA:
14615 if (htab->elf.tls_sec != NULL)
14616 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14619 case R_PPC64_ADDR64_LOCAL:
14620 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14625 case R_PPC64_DTPMOD64:
14630 case R_PPC64_TPREL64:
14631 if (htab->elf.tls_sec != NULL)
14632 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14635 case R_PPC64_DTPREL64:
14636 if (htab->elf.tls_sec != NULL)
14637 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14640 /* Relocations that may need to be propagated if this is a
14642 case R_PPC64_REL30:
14643 case R_PPC64_REL32:
14644 case R_PPC64_REL64:
14645 case R_PPC64_ADDR14:
14646 case R_PPC64_ADDR14_BRNTAKEN:
14647 case R_PPC64_ADDR14_BRTAKEN:
14648 case R_PPC64_ADDR16:
14649 case R_PPC64_ADDR16_DS:
14650 case R_PPC64_ADDR16_HA:
14651 case R_PPC64_ADDR16_HI:
14652 case R_PPC64_ADDR16_HIGH:
14653 case R_PPC64_ADDR16_HIGHA:
14654 case R_PPC64_ADDR16_HIGHER:
14655 case R_PPC64_ADDR16_HIGHERA:
14656 case R_PPC64_ADDR16_HIGHEST:
14657 case R_PPC64_ADDR16_HIGHESTA:
14658 case R_PPC64_ADDR16_LO:
14659 case R_PPC64_ADDR16_LO_DS:
14660 case R_PPC64_ADDR24:
14661 case R_PPC64_ADDR32:
14662 case R_PPC64_ADDR64:
14663 case R_PPC64_UADDR16:
14664 case R_PPC64_UADDR32:
14665 case R_PPC64_UADDR64:
14667 if ((input_section->flags & SEC_ALLOC) == 0)
14670 if (NO_OPD_RELOCS && is_opd)
14673 if ((bfd_link_pic (info)
14675 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14676 || h->elf.root.type != bfd_link_hash_undefweak)
14677 && (must_be_dyn_reloc (info, r_type)
14678 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14679 || (ELIMINATE_COPY_RELOCS
14680 && !bfd_link_pic (info)
14682 && h->elf.dynindx != -1
14683 && !h->elf.non_got_ref
14684 && !h->elf.def_regular)
14685 || (!bfd_link_pic (info)
14687 ? h->elf.type == STT_GNU_IFUNC
14688 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14690 bfd_boolean skip, relocate;
14694 /* When generating a dynamic object, these relocations
14695 are copied into the output file to be resolved at run
14701 out_off = _bfd_elf_section_offset (output_bfd, info,
14702 input_section, rel->r_offset);
14703 if (out_off == (bfd_vma) -1)
14705 else if (out_off == (bfd_vma) -2)
14706 skip = TRUE, relocate = TRUE;
14707 out_off += (input_section->output_section->vma
14708 + input_section->output_offset);
14709 outrel.r_offset = out_off;
14710 outrel.r_addend = rel->r_addend;
14712 /* Optimize unaligned reloc use. */
14713 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14714 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14715 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14716 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14717 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14718 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14719 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14720 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14721 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14724 memset (&outrel, 0, sizeof outrel);
14725 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14727 && r_type != R_PPC64_TOC)
14729 BFD_ASSERT (h->elf.dynindx != -1);
14730 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14734 /* This symbol is local, or marked to become local,
14735 or this is an opd section reloc which must point
14736 at a local function. */
14737 outrel.r_addend += relocation;
14738 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14740 if (is_opd && h != NULL)
14742 /* Lie about opd entries. This case occurs
14743 when building shared libraries and we
14744 reference a function in another shared
14745 lib. The same thing happens for a weak
14746 definition in an application that's
14747 overridden by a strong definition in a
14748 shared lib. (I believe this is a generic
14749 bug in binutils handling of weak syms.)
14750 In these cases we won't use the opd
14751 entry in this lib. */
14752 unresolved_reloc = FALSE;
14755 && r_type == R_PPC64_ADDR64
14757 ? h->elf.type == STT_GNU_IFUNC
14758 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14759 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14762 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14764 /* We need to relocate .opd contents for ld.so.
14765 Prelink also wants simple and consistent rules
14766 for relocs. This make all RELATIVE relocs have
14767 *r_offset equal to r_addend. */
14776 ? h->elf.type == STT_GNU_IFUNC
14777 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14779 info->callbacks->einfo
14780 (_("%P: %H: %s for indirect "
14781 "function `%T' unsupported\n"),
14782 input_bfd, input_section, rel->r_offset,
14783 ppc64_elf_howto_table[r_type]->name,
14787 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14789 else if (sec == NULL || sec->owner == NULL)
14791 bfd_set_error (bfd_error_bad_value);
14798 osec = sec->output_section;
14799 indx = elf_section_data (osec)->dynindx;
14803 if ((osec->flags & SEC_READONLY) == 0
14804 && htab->elf.data_index_section != NULL)
14805 osec = htab->elf.data_index_section;
14807 osec = htab->elf.text_index_section;
14808 indx = elf_section_data (osec)->dynindx;
14810 BFD_ASSERT (indx != 0);
14812 /* We are turning this relocation into one
14813 against a section symbol, so subtract out
14814 the output section's address but not the
14815 offset of the input section in the output
14817 outrel.r_addend -= osec->vma;
14820 outrel.r_info = ELF64_R_INFO (indx, r_type);
14824 sreloc = elf_section_data (input_section)->sreloc;
14826 ? h->elf.type == STT_GNU_IFUNC
14827 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14828 sreloc = htab->elf.irelplt;
14829 if (sreloc == NULL)
14832 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14835 loc = sreloc->contents;
14836 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14837 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14839 /* If this reloc is against an external symbol, it will
14840 be computed at runtime, so there's no need to do
14841 anything now. However, for the sake of prelink ensure
14842 that the section contents are a known value. */
14845 unresolved_reloc = FALSE;
14846 /* The value chosen here is quite arbitrary as ld.so
14847 ignores section contents except for the special
14848 case of .opd where the contents might be accessed
14849 before relocation. Choose zero, as that won't
14850 cause reloc overflow. */
14853 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14854 to improve backward compatibility with older
14856 if (r_type == R_PPC64_ADDR64)
14857 addend = outrel.r_addend;
14858 /* Adjust pc_relative relocs to have zero in *r_offset. */
14859 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14860 addend = (input_section->output_section->vma
14861 + input_section->output_offset
14868 case R_PPC64_GLOB_DAT:
14869 case R_PPC64_JMP_SLOT:
14870 case R_PPC64_JMP_IREL:
14871 case R_PPC64_RELATIVE:
14872 /* We shouldn't ever see these dynamic relocs in relocatable
14874 /* Fall through. */
14876 case R_PPC64_PLTGOT16:
14877 case R_PPC64_PLTGOT16_DS:
14878 case R_PPC64_PLTGOT16_HA:
14879 case R_PPC64_PLTGOT16_HI:
14880 case R_PPC64_PLTGOT16_LO:
14881 case R_PPC64_PLTGOT16_LO_DS:
14882 case R_PPC64_PLTREL32:
14883 case R_PPC64_PLTREL64:
14884 /* These ones haven't been implemented yet. */
14886 info->callbacks->einfo
14887 (_("%P: %B: %s is not supported for `%T'\n"),
14889 ppc64_elf_howto_table[r_type]->name, sym_name);
14891 bfd_set_error (bfd_error_invalid_operation);
14896 /* Multi-instruction sequences that access the TOC can be
14897 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14898 to nop; addi rb,r2,x; */
14904 case R_PPC64_GOT_TLSLD16_HI:
14905 case R_PPC64_GOT_TLSGD16_HI:
14906 case R_PPC64_GOT_TPREL16_HI:
14907 case R_PPC64_GOT_DTPREL16_HI:
14908 case R_PPC64_GOT16_HI:
14909 case R_PPC64_TOC16_HI:
14910 /* These relocs would only be useful if building up an
14911 offset to later add to r2, perhaps in an indexed
14912 addressing mode instruction. Don't try to optimize.
14913 Unfortunately, the possibility of someone building up an
14914 offset like this or even with the HA relocs, means that
14915 we need to check the high insn when optimizing the low
14919 case R_PPC64_GOT_TLSLD16_HA:
14920 case R_PPC64_GOT_TLSGD16_HA:
14921 case R_PPC64_GOT_TPREL16_HA:
14922 case R_PPC64_GOT_DTPREL16_HA:
14923 case R_PPC64_GOT16_HA:
14924 case R_PPC64_TOC16_HA:
14925 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14926 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14928 bfd_byte *p = contents + (rel->r_offset & ~3);
14929 bfd_put_32 (input_bfd, NOP, p);
14933 case R_PPC64_GOT_TLSLD16_LO:
14934 case R_PPC64_GOT_TLSGD16_LO:
14935 case R_PPC64_GOT_TPREL16_LO_DS:
14936 case R_PPC64_GOT_DTPREL16_LO_DS:
14937 case R_PPC64_GOT16_LO:
14938 case R_PPC64_GOT16_LO_DS:
14939 case R_PPC64_TOC16_LO:
14940 case R_PPC64_TOC16_LO_DS:
14941 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14942 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14944 bfd_byte *p = contents + (rel->r_offset & ~3);
14945 insn = bfd_get_32 (input_bfd, p);
14946 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14948 /* Transform addic to addi when we change reg. */
14949 insn &= ~((0x3f << 26) | (0x1f << 16));
14950 insn |= (14u << 26) | (2 << 16);
14954 insn &= ~(0x1f << 16);
14957 bfd_put_32 (input_bfd, insn, p);
14962 /* Do any further special processing. */
14963 howto = ppc64_elf_howto_table[(int) r_type];
14969 case R_PPC64_REL16_HA:
14970 case R_PPC64_REL16DX_HA:
14971 case R_PPC64_ADDR16_HA:
14972 case R_PPC64_ADDR16_HIGHA:
14973 case R_PPC64_ADDR16_HIGHERA:
14974 case R_PPC64_ADDR16_HIGHESTA:
14975 case R_PPC64_TOC16_HA:
14976 case R_PPC64_SECTOFF_HA:
14977 case R_PPC64_TPREL16_HA:
14978 case R_PPC64_TPREL16_HIGHA:
14979 case R_PPC64_TPREL16_HIGHERA:
14980 case R_PPC64_TPREL16_HIGHESTA:
14981 case R_PPC64_DTPREL16_HA:
14982 case R_PPC64_DTPREL16_HIGHA:
14983 case R_PPC64_DTPREL16_HIGHERA:
14984 case R_PPC64_DTPREL16_HIGHESTA:
14985 /* It's just possible that this symbol is a weak symbol
14986 that's not actually defined anywhere. In that case,
14987 'sec' would be NULL, and we should leave the symbol
14988 alone (it will be set to zero elsewhere in the link). */
14993 case R_PPC64_GOT16_HA:
14994 case R_PPC64_PLTGOT16_HA:
14995 case R_PPC64_PLT16_HA:
14996 case R_PPC64_GOT_TLSGD16_HA:
14997 case R_PPC64_GOT_TLSLD16_HA:
14998 case R_PPC64_GOT_TPREL16_HA:
14999 case R_PPC64_GOT_DTPREL16_HA:
15000 /* Add 0x10000 if sign bit in 0:15 is set.
15001 Bits 0:15 are not used. */
15005 case R_PPC64_ADDR16_DS:
15006 case R_PPC64_ADDR16_LO_DS:
15007 case R_PPC64_GOT16_DS:
15008 case R_PPC64_GOT16_LO_DS:
15009 case R_PPC64_PLT16_LO_DS:
15010 case R_PPC64_SECTOFF_DS:
15011 case R_PPC64_SECTOFF_LO_DS:
15012 case R_PPC64_TOC16_DS:
15013 case R_PPC64_TOC16_LO_DS:
15014 case R_PPC64_PLTGOT16_DS:
15015 case R_PPC64_PLTGOT16_LO_DS:
15016 case R_PPC64_GOT_TPREL16_DS:
15017 case R_PPC64_GOT_TPREL16_LO_DS:
15018 case R_PPC64_GOT_DTPREL16_DS:
15019 case R_PPC64_GOT_DTPREL16_LO_DS:
15020 case R_PPC64_TPREL16_DS:
15021 case R_PPC64_TPREL16_LO_DS:
15022 case R_PPC64_DTPREL16_DS:
15023 case R_PPC64_DTPREL16_LO_DS:
15024 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15026 /* If this reloc is against an lq, lxv, or stxv insn, then
15027 the value must be a multiple of 16. This is somewhat of
15028 a hack, but the "correct" way to do this by defining _DQ
15029 forms of all the _DS relocs bloats all reloc switches in
15030 this file. It doesn't make much sense to use these
15031 relocs in data, so testing the insn should be safe. */
15032 if ((insn & (0x3f << 26)) == (56u << 26)
15033 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15035 relocation += addend;
15036 addend = insn & (mask ^ 3);
15037 if ((relocation & mask) != 0)
15039 relocation ^= relocation & mask;
15040 info->callbacks->einfo
15041 (_("%P: %H: error: %s not a multiple of %u\n"),
15042 input_bfd, input_section, rel->r_offset,
15045 bfd_set_error (bfd_error_bad_value);
15052 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15053 because such sections are not SEC_ALLOC and thus ld.so will
15054 not process them. */
15055 if (unresolved_reloc
15056 && !((input_section->flags & SEC_DEBUGGING) != 0
15057 && h->elf.def_dynamic)
15058 && _bfd_elf_section_offset (output_bfd, info, input_section,
15059 rel->r_offset) != (bfd_vma) -1)
15061 info->callbacks->einfo
15062 (_("%P: %H: unresolvable %s against `%T'\n"),
15063 input_bfd, input_section, rel->r_offset,
15065 h->elf.root.root.string);
15069 /* 16-bit fields in insns mostly have signed values, but a
15070 few insns have 16-bit unsigned values. Really, we should
15071 have different reloc types. */
15072 if (howto->complain_on_overflow != complain_overflow_dont
15073 && howto->dst_mask == 0xffff
15074 && (input_section->flags & SEC_CODE) != 0)
15076 enum complain_overflow complain = complain_overflow_signed;
15078 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15079 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15080 complain = complain_overflow_bitfield;
15081 else if (howto->rightshift == 0
15082 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15083 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15084 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15085 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15086 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15087 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15088 complain = complain_overflow_unsigned;
15089 if (howto->complain_on_overflow != complain)
15091 alt_howto = *howto;
15092 alt_howto.complain_on_overflow = complain;
15093 howto = &alt_howto;
15097 if (r_type == R_PPC64_REL16DX_HA)
15099 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15100 if (rel->r_offset + 4 > input_section->size)
15101 r = bfd_reloc_outofrange;
15104 relocation += addend;
15105 relocation -= (rel->r_offset
15106 + input_section->output_offset
15107 + input_section->output_section->vma);
15108 relocation = (bfd_signed_vma) relocation >> 16;
15109 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15111 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15112 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15114 if (relocation + 0x8000 > 0xffff)
15115 r = bfd_reloc_overflow;
15119 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15120 rel->r_offset, relocation, addend);
15122 if (r != bfd_reloc_ok)
15124 char *more_info = NULL;
15125 const char *reloc_name = howto->name;
15127 if (reloc_dest != DEST_NORMAL)
15129 more_info = bfd_malloc (strlen (reloc_name) + 8);
15130 if (more_info != NULL)
15132 strcpy (more_info, reloc_name);
15133 strcat (more_info, (reloc_dest == DEST_OPD
15134 ? " (OPD)" : " (stub)"));
15135 reloc_name = more_info;
15139 if (r == bfd_reloc_overflow)
15141 /* On code like "if (foo) foo();" don't report overflow
15142 on a branch to zero when foo is undefined. */
15144 && (reloc_dest == DEST_STUB
15146 && (h->elf.root.type == bfd_link_hash_undefweak
15147 || h->elf.root.type == bfd_link_hash_undefined)
15148 && is_branch_reloc (r_type))))
15149 info->callbacks->reloc_overflow (info, &h->elf.root,
15150 sym_name, reloc_name,
15152 input_bfd, input_section,
15157 info->callbacks->einfo
15158 (_("%P: %H: %s against `%T': error %d\n"),
15159 input_bfd, input_section, rel->r_offset,
15160 reloc_name, sym_name, (int) r);
15163 if (more_info != NULL)
15173 Elf_Internal_Shdr *rel_hdr;
15174 size_t deleted = rel - wrel;
15176 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15177 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15178 if (rel_hdr->sh_size == 0)
15180 /* It is too late to remove an empty reloc section. Leave
15182 ??? What is wrong with an empty section??? */
15183 rel_hdr->sh_size = rel_hdr->sh_entsize;
15186 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15187 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15188 input_section->reloc_count -= deleted;
15191 /* If we're emitting relocations, then shortly after this function
15192 returns, reloc offsets and addends for this section will be
15193 adjusted. Worse, reloc symbol indices will be for the output
15194 file rather than the input. Save a copy of the relocs for
15195 opd_entry_value. */
15196 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15199 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15200 rel = bfd_alloc (input_bfd, amt);
15201 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15202 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15205 memcpy (rel, relocs, amt);
15210 /* Adjust the value of any local symbols in opd sections. */
15213 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15214 const char *name ATTRIBUTE_UNUSED,
15215 Elf_Internal_Sym *elfsym,
15216 asection *input_sec,
15217 struct elf_link_hash_entry *h)
15219 struct _opd_sec_data *opd;
15226 opd = get_opd_info (input_sec);
15227 if (opd == NULL || opd->adjust == NULL)
15230 value = elfsym->st_value - input_sec->output_offset;
15231 if (!bfd_link_relocatable (info))
15232 value -= input_sec->output_section->vma;
15234 adjust = opd->adjust[OPD_NDX (value)];
15238 elfsym->st_value += adjust;
15242 /* Finish up dynamic symbol handling. We set the contents of various
15243 dynamic sections here. */
15246 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15247 struct bfd_link_info *info,
15248 struct elf_link_hash_entry *h,
15249 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
15251 struct ppc_link_hash_table *htab;
15252 struct plt_entry *ent;
15253 Elf_Internal_Rela rela;
15256 htab = ppc_hash_table (info);
15260 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15261 if (ent->plt.offset != (bfd_vma) -1)
15263 /* This symbol has an entry in the procedure linkage
15264 table. Set it up. */
15265 if (!htab->elf.dynamic_sections_created
15266 || h->dynindx == -1)
15268 BFD_ASSERT (h->type == STT_GNU_IFUNC
15270 && (h->root.type == bfd_link_hash_defined
15271 || h->root.type == bfd_link_hash_defweak));
15272 rela.r_offset = (htab->elf.iplt->output_section->vma
15273 + htab->elf.iplt->output_offset
15274 + ent->plt.offset);
15276 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15278 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15279 rela.r_addend = (h->root.u.def.value
15280 + h->root.u.def.section->output_offset
15281 + h->root.u.def.section->output_section->vma
15283 loc = (htab->elf.irelplt->contents
15284 + (htab->elf.irelplt->reloc_count++
15285 * sizeof (Elf64_External_Rela)));
15289 rela.r_offset = (htab->elf.splt->output_section->vma
15290 + htab->elf.splt->output_offset
15291 + ent->plt.offset);
15292 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15293 rela.r_addend = ent->addend;
15294 loc = (htab->elf.srelplt->contents
15295 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15296 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15298 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15300 if (!htab->opd_abi)
15302 if (!h->def_regular)
15304 /* Mark the symbol as undefined, rather than as
15305 defined in glink. Leave the value if there were
15306 any relocations where pointer equality matters
15307 (this is a clue for the dynamic linker, to make
15308 function pointer comparisons work between an
15309 application and shared library), otherwise set it
15311 sym->st_shndx = SHN_UNDEF;
15312 if (!h->pointer_equality_needed)
15314 else if (!h->ref_regular_nonweak)
15316 /* This breaks function pointer comparisons, but
15317 that is better than breaking tests for a NULL
15318 function pointer. */
15327 /* This symbol needs a copy reloc. Set it up. */
15329 if (h->dynindx == -1
15330 || (h->root.type != bfd_link_hash_defined
15331 && h->root.type != bfd_link_hash_defweak)
15332 || htab->relbss == NULL)
15335 rela.r_offset = (h->root.u.def.value
15336 + h->root.u.def.section->output_section->vma
15337 + h->root.u.def.section->output_offset);
15338 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15340 loc = htab->relbss->contents;
15341 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
15342 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15348 /* Used to decide how to sort relocs in an optimal manner for the
15349 dynamic linker, before writing them out. */
15351 static enum elf_reloc_type_class
15352 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15353 const asection *rel_sec,
15354 const Elf_Internal_Rela *rela)
15356 enum elf_ppc64_reloc_type r_type;
15357 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15359 if (rel_sec == htab->elf.irelplt)
15360 return reloc_class_ifunc;
15362 r_type = ELF64_R_TYPE (rela->r_info);
15365 case R_PPC64_RELATIVE:
15366 return reloc_class_relative;
15367 case R_PPC64_JMP_SLOT:
15368 return reloc_class_plt;
15370 return reloc_class_copy;
15372 return reloc_class_normal;
15376 /* Finish up the dynamic sections. */
15379 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15380 struct bfd_link_info *info)
15382 struct ppc_link_hash_table *htab;
15386 htab = ppc_hash_table (info);
15390 dynobj = htab->elf.dynobj;
15391 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15393 if (htab->elf.dynamic_sections_created)
15395 Elf64_External_Dyn *dyncon, *dynconend;
15397 if (sdyn == NULL || htab->elf.sgot == NULL)
15400 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15401 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15402 for (; dyncon < dynconend; dyncon++)
15404 Elf_Internal_Dyn dyn;
15407 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15414 case DT_PPC64_GLINK:
15416 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15417 /* We stupidly defined DT_PPC64_GLINK to be the start
15418 of glink rather than the first entry point, which is
15419 what ld.so needs, and now have a bigger stub to
15420 support automatic multiple TOCs. */
15421 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15425 s = bfd_get_section_by_name (output_bfd, ".opd");
15428 dyn.d_un.d_ptr = s->vma;
15432 if (htab->do_multi_toc && htab->multi_toc_needed)
15433 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15436 case DT_PPC64_OPDSZ:
15437 s = bfd_get_section_by_name (output_bfd, ".opd");
15440 dyn.d_un.d_val = s->size;
15444 s = htab->elf.splt;
15445 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15449 s = htab->elf.srelplt;
15450 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15454 dyn.d_un.d_val = htab->elf.srelplt->size;
15458 /* Don't count procedure linkage table relocs in the
15459 overall reloc count. */
15460 s = htab->elf.srelplt;
15463 dyn.d_un.d_val -= s->size;
15467 /* We may not be using the standard ELF linker script.
15468 If .rela.plt is the first .rela section, we adjust
15469 DT_RELA to not include it. */
15470 s = htab->elf.srelplt;
15473 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15475 dyn.d_un.d_ptr += s->size;
15479 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15483 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15485 /* Fill in the first entry in the global offset table.
15486 We use it to hold the link-time TOCbase. */
15487 bfd_put_64 (output_bfd,
15488 elf_gp (output_bfd) + TOC_BASE_OFF,
15489 htab->elf.sgot->contents);
15491 /* Set .got entry size. */
15492 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15495 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15497 /* Set .plt entry size. */
15498 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15499 = PLT_ENTRY_SIZE (htab);
15502 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15503 brlt ourselves if emitrelocations. */
15504 if (htab->brlt != NULL
15505 && htab->brlt->reloc_count != 0
15506 && !_bfd_elf_link_output_relocs (output_bfd,
15508 elf_section_data (htab->brlt)->rela.hdr,
15509 elf_section_data (htab->brlt)->relocs,
15513 if (htab->glink != NULL
15514 && htab->glink->reloc_count != 0
15515 && !_bfd_elf_link_output_relocs (output_bfd,
15517 elf_section_data (htab->glink)->rela.hdr,
15518 elf_section_data (htab->glink)->relocs,
15522 if (htab->glink_eh_frame != NULL
15523 && htab->glink_eh_frame->size != 0)
15527 asection *stub_sec;
15529 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15530 for (stub_sec = htab->params->stub_bfd->sections;
15532 stub_sec = stub_sec->next)
15533 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15539 /* Offset to stub section. */
15540 val = (stub_sec->output_section->vma
15541 + stub_sec->output_offset);
15542 val -= (htab->glink_eh_frame->output_section->vma
15543 + htab->glink_eh_frame->output_offset
15544 + (p - htab->glink_eh_frame->contents));
15545 if (val + 0x80000000 > 0xffffffff)
15547 info->callbacks->einfo
15548 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15552 bfd_put_32 (dynobj, val, p);
15554 /* stub section size. */
15556 /* Augmentation. */
15561 if (htab->glink != NULL && htab->glink->size != 0)
15567 /* Offset to .glink. */
15568 val = (htab->glink->output_section->vma
15569 + htab->glink->output_offset
15571 val -= (htab->glink_eh_frame->output_section->vma
15572 + htab->glink_eh_frame->output_offset
15573 + (p - htab->glink_eh_frame->contents));
15574 if (val + 0x80000000 > 0xffffffff)
15576 info->callbacks->einfo
15577 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15578 htab->glink->name);
15581 bfd_put_32 (dynobj, val, p);
15585 /* Augmentation. */
15591 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15592 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15593 htab->glink_eh_frame,
15594 htab->glink_eh_frame->contents))
15598 /* We need to handle writing out multiple GOT sections ourselves,
15599 since we didn't add them to DYNOBJ. We know dynobj is the first
15601 while ((dynobj = dynobj->link.next) != NULL)
15605 if (!is_ppc64_elf (dynobj))
15608 s = ppc64_elf_tdata (dynobj)->got;
15611 && s->output_section != bfd_abs_section_ptr
15612 && !bfd_set_section_contents (output_bfd, s->output_section,
15613 s->contents, s->output_offset,
15616 s = ppc64_elf_tdata (dynobj)->relgot;
15619 && s->output_section != bfd_abs_section_ptr
15620 && !bfd_set_section_contents (output_bfd, s->output_section,
15621 s->contents, s->output_offset,
15629 #include "elf64-target.h"
15631 /* FreeBSD support */
15633 #undef TARGET_LITTLE_SYM
15634 #undef TARGET_LITTLE_NAME
15636 #undef TARGET_BIG_SYM
15637 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15638 #undef TARGET_BIG_NAME
15639 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15642 #define ELF_OSABI ELFOSABI_FREEBSD
15645 #define elf64_bed elf64_powerpc_fbsd_bed
15647 #include "elf64-target.h"