1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2016 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_before_check_relocs
98 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
131 /* Offsets to some stack save slots. */
133 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
134 /* This one is dodgy. ELFv2 does not have a linker word, so use the
135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
139 /* TOC base pointers offset from start of TOC. */
140 #define TOC_BASE_OFF 0x8000
141 /* TOC base alignment. */
142 #define TOC_BASE_ALIGN 256
144 /* Offset of tp and dtp pointers from start of TLS block. */
145 #define TP_OFFSET 0x7000
146 #define DTP_OFFSET 0x8000
148 /* .plt call stub instructions. The normal stub is like this, but
149 sometimes the .plt entry crosses a 64k boundary and we need to
150 insert an addi to adjust r11. */
151 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
152 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
153 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
154 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
155 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
156 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
157 #define BCTR 0x4e800420 /* bctr */
159 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
160 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
161 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
163 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
164 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
165 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
166 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
167 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
168 #define BNECTR 0x4ca20420 /* bnectr+ */
169 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
171 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
172 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
173 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
175 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
176 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
177 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
179 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
180 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
181 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
182 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
183 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
185 /* glink call stub instructions. We enter with the index in R0. */
186 #define GLINK_CALL_STUB_SIZE (16*4)
190 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
191 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
193 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
194 /* ld %2,(0b-1b)(%11) */
195 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
196 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
202 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
203 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
204 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
205 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
206 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
209 #define NOP 0x60000000
211 /* Some other nops. */
212 #define CROR_151515 0x4def7b82
213 #define CROR_313131 0x4ffffb82
215 /* .glink entries for the first 32k functions are two instructions. */
216 #define LI_R0_0 0x38000000 /* li %r0,0 */
217 #define B_DOT 0x48000000 /* b . */
219 /* After that, we need two instructions to load the index, followed by
221 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
222 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
224 /* Instructions used by the save and restore reg functions. */
225 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
226 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
227 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
228 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
229 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
230 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
231 #define LI_R12_0 0x39800000 /* li %r12,0 */
232 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
233 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
234 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
235 #define BLR 0x4e800020 /* blr */
237 /* Since .opd is an array of descriptors and each entry will end up
238 with identical R_PPC64_RELATIVE relocs, there is really no need to
239 propagate .opd relocs; The dynamic linker should be taught to
240 relocate .opd without reloc entries. */
241 #ifndef NO_OPD_RELOCS
242 #define NO_OPD_RELOCS 0
246 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
250 abiversion (bfd *abfd)
252 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
256 set_abiversion (bfd *abfd, int ver)
258 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
259 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
262 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
264 /* Relocation HOWTO's. */
265 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
267 static reloc_howto_type ppc64_elf_howto_raw[] = {
268 /* This reloc does nothing. */
269 HOWTO (R_PPC64_NONE, /* type */
271 3, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE, /* pc_relative */
275 complain_overflow_dont, /* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_PPC64_NONE", /* name */
278 FALSE, /* partial_inplace */
281 FALSE), /* pcrel_offset */
283 /* A standard 32 bit relocation. */
284 HOWTO (R_PPC64_ADDR32, /* type */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
288 FALSE, /* pc_relative */
290 complain_overflow_bitfield, /* complain_on_overflow */
291 bfd_elf_generic_reloc, /* special_function */
292 "R_PPC64_ADDR32", /* name */
293 FALSE, /* partial_inplace */
295 0xffffffff, /* dst_mask */
296 FALSE), /* pcrel_offset */
298 /* An absolute 26 bit branch; the lower two bits must be zero.
299 FIXME: we don't check that, we just clear them. */
300 HOWTO (R_PPC64_ADDR24, /* type */
302 2, /* size (0 = byte, 1 = short, 2 = long) */
304 FALSE, /* pc_relative */
306 complain_overflow_bitfield, /* complain_on_overflow */
307 bfd_elf_generic_reloc, /* special_function */
308 "R_PPC64_ADDR24", /* name */
309 FALSE, /* partial_inplace */
311 0x03fffffc, /* dst_mask */
312 FALSE), /* pcrel_offset */
314 /* A standard 16 bit relocation. */
315 HOWTO (R_PPC64_ADDR16, /* type */
317 1, /* size (0 = byte, 1 = short, 2 = long) */
319 FALSE, /* pc_relative */
321 complain_overflow_bitfield, /* complain_on_overflow */
322 bfd_elf_generic_reloc, /* special_function */
323 "R_PPC64_ADDR16", /* name */
324 FALSE, /* partial_inplace */
326 0xffff, /* dst_mask */
327 FALSE), /* pcrel_offset */
329 /* A 16 bit relocation without overflow. */
330 HOWTO (R_PPC64_ADDR16_LO, /* type */
332 1, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_dont,/* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC64_ADDR16_LO", /* name */
339 FALSE, /* partial_inplace */
341 0xffff, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* Bits 16-31 of an address. */
345 HOWTO (R_PPC64_ADDR16_HI, /* type */
347 1, /* size (0 = byte, 1 = short, 2 = long) */
349 FALSE, /* pc_relative */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC64_ADDR16_HI", /* name */
354 FALSE, /* partial_inplace */
356 0xffff, /* dst_mask */
357 FALSE), /* pcrel_offset */
359 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
360 bits, treated as a signed number, is negative. */
361 HOWTO (R_PPC64_ADDR16_HA, /* type */
363 1, /* size (0 = byte, 1 = short, 2 = long) */
365 FALSE, /* pc_relative */
367 complain_overflow_signed, /* complain_on_overflow */
368 ppc64_elf_ha_reloc, /* special_function */
369 "R_PPC64_ADDR16_HA", /* name */
370 FALSE, /* partial_inplace */
372 0xffff, /* dst_mask */
373 FALSE), /* pcrel_offset */
375 /* An absolute 16 bit branch; the lower two bits must be zero.
376 FIXME: we don't check that, we just clear them. */
377 HOWTO (R_PPC64_ADDR14, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 FALSE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 ppc64_elf_branch_reloc, /* special_function */
385 "R_PPC64_ADDR14", /* name */
386 FALSE, /* partial_inplace */
388 0x0000fffc, /* dst_mask */
389 FALSE), /* pcrel_offset */
391 /* An absolute 16 bit branch, for which bit 10 should be set to
392 indicate that the branch is expected to be taken. The lower two
393 bits must be zero. */
394 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 FALSE, /* pc_relative */
400 complain_overflow_signed, /* complain_on_overflow */
401 ppc64_elf_brtaken_reloc, /* special_function */
402 "R_PPC64_ADDR14_BRTAKEN",/* name */
403 FALSE, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 FALSE), /* pcrel_offset */
408 /* An absolute 16 bit branch, for which bit 10 should be set to
409 indicate that the branch is not expected to be taken. The lower
410 two bits must be zero. */
411 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 FALSE, /* pc_relative */
417 complain_overflow_signed, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc, /* special_function */
419 "R_PPC64_ADDR14_BRNTAKEN",/* name */
420 FALSE, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 FALSE), /* pcrel_offset */
425 /* A relative 26 bit branch; the lower two bits must be zero. */
426 HOWTO (R_PPC64_REL24, /* type */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
430 TRUE, /* pc_relative */
432 complain_overflow_signed, /* complain_on_overflow */
433 ppc64_elf_branch_reloc, /* special_function */
434 "R_PPC64_REL24", /* name */
435 FALSE, /* partial_inplace */
437 0x03fffffc, /* dst_mask */
438 TRUE), /* pcrel_offset */
440 /* A relative 16 bit branch; the lower two bits must be zero. */
441 HOWTO (R_PPC64_REL14, /* type */
443 2, /* size (0 = byte, 1 = short, 2 = long) */
445 TRUE, /* pc_relative */
447 complain_overflow_signed, /* complain_on_overflow */
448 ppc64_elf_branch_reloc, /* special_function */
449 "R_PPC64_REL14", /* name */
450 FALSE, /* partial_inplace */
452 0x0000fffc, /* dst_mask */
453 TRUE), /* pcrel_offset */
455 /* A relative 16 bit branch. Bit 10 should be set to indicate that
456 the branch is expected to be taken. The lower two bits must be
458 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
460 2, /* size (0 = byte, 1 = short, 2 = long) */
462 TRUE, /* pc_relative */
464 complain_overflow_signed, /* complain_on_overflow */
465 ppc64_elf_brtaken_reloc, /* special_function */
466 "R_PPC64_REL14_BRTAKEN", /* name */
467 FALSE, /* partial_inplace */
469 0x0000fffc, /* dst_mask */
470 TRUE), /* pcrel_offset */
472 /* A relative 16 bit branch. Bit 10 should be set to indicate that
473 the branch is not expected to be taken. The lower two bits must
475 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 TRUE, /* pc_relative */
481 complain_overflow_signed, /* complain_on_overflow */
482 ppc64_elf_brtaken_reloc, /* special_function */
483 "R_PPC64_REL14_BRNTAKEN",/* name */
484 FALSE, /* partial_inplace */
486 0x0000fffc, /* dst_mask */
487 TRUE), /* pcrel_offset */
489 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
491 HOWTO (R_PPC64_GOT16, /* type */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE, /* pc_relative */
497 complain_overflow_signed, /* complain_on_overflow */
498 ppc64_elf_unhandled_reloc, /* special_function */
499 "R_PPC64_GOT16", /* name */
500 FALSE, /* partial_inplace */
502 0xffff, /* dst_mask */
503 FALSE), /* pcrel_offset */
505 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
507 HOWTO (R_PPC64_GOT16_LO, /* type */
509 1, /* size (0 = byte, 1 = short, 2 = long) */
511 FALSE, /* pc_relative */
513 complain_overflow_dont, /* complain_on_overflow */
514 ppc64_elf_unhandled_reloc, /* special_function */
515 "R_PPC64_GOT16_LO", /* name */
516 FALSE, /* partial_inplace */
518 0xffff, /* dst_mask */
519 FALSE), /* pcrel_offset */
521 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
523 HOWTO (R_PPC64_GOT16_HI, /* type */
525 1, /* size (0 = byte, 1 = short, 2 = long) */
527 FALSE, /* pc_relative */
529 complain_overflow_signed,/* complain_on_overflow */
530 ppc64_elf_unhandled_reloc, /* special_function */
531 "R_PPC64_GOT16_HI", /* name */
532 FALSE, /* partial_inplace */
534 0xffff, /* dst_mask */
535 FALSE), /* pcrel_offset */
537 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
539 HOWTO (R_PPC64_GOT16_HA, /* type */
541 1, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE, /* pc_relative */
545 complain_overflow_signed,/* complain_on_overflow */
546 ppc64_elf_unhandled_reloc, /* special_function */
547 "R_PPC64_GOT16_HA", /* name */
548 FALSE, /* partial_inplace */
550 0xffff, /* dst_mask */
551 FALSE), /* pcrel_offset */
553 /* This is used only by the dynamic linker. The symbol should exist
554 both in the object being run and in some shared library. The
555 dynamic linker copies the data addressed by the symbol from the
556 shared library into the object, because the object being
557 run has to have the data at some particular address. */
558 HOWTO (R_PPC64_COPY, /* type */
560 0, /* this one is variable size */
562 FALSE, /* pc_relative */
564 complain_overflow_dont, /* complain_on_overflow */
565 ppc64_elf_unhandled_reloc, /* special_function */
566 "R_PPC64_COPY", /* name */
567 FALSE, /* partial_inplace */
570 FALSE), /* pcrel_offset */
572 /* Like R_PPC64_ADDR64, but used when setting global offset table
574 HOWTO (R_PPC64_GLOB_DAT, /* type */
576 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
578 FALSE, /* pc_relative */
580 complain_overflow_dont, /* complain_on_overflow */
581 ppc64_elf_unhandled_reloc, /* special_function */
582 "R_PPC64_GLOB_DAT", /* name */
583 FALSE, /* partial_inplace */
585 ONES (64), /* dst_mask */
586 FALSE), /* pcrel_offset */
588 /* Created by the link editor. Marks a procedure linkage table
589 entry for a symbol. */
590 HOWTO (R_PPC64_JMP_SLOT, /* type */
592 0, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE, /* pc_relative */
596 complain_overflow_dont, /* complain_on_overflow */
597 ppc64_elf_unhandled_reloc, /* special_function */
598 "R_PPC64_JMP_SLOT", /* name */
599 FALSE, /* partial_inplace */
602 FALSE), /* pcrel_offset */
604 /* Used only by the dynamic linker. When the object is run, this
605 doubleword64 is set to the load address of the object, plus the
607 HOWTO (R_PPC64_RELATIVE, /* type */
609 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
611 FALSE, /* pc_relative */
613 complain_overflow_dont, /* complain_on_overflow */
614 bfd_elf_generic_reloc, /* special_function */
615 "R_PPC64_RELATIVE", /* name */
616 FALSE, /* partial_inplace */
618 ONES (64), /* dst_mask */
619 FALSE), /* pcrel_offset */
621 /* Like R_PPC64_ADDR32, but may be unaligned. */
622 HOWTO (R_PPC64_UADDR32, /* type */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
626 FALSE, /* pc_relative */
628 complain_overflow_bitfield, /* complain_on_overflow */
629 bfd_elf_generic_reloc, /* special_function */
630 "R_PPC64_UADDR32", /* name */
631 FALSE, /* partial_inplace */
633 0xffffffff, /* dst_mask */
634 FALSE), /* pcrel_offset */
636 /* Like R_PPC64_ADDR16, but may be unaligned. */
637 HOWTO (R_PPC64_UADDR16, /* type */
639 1, /* size (0 = byte, 1 = short, 2 = long) */
641 FALSE, /* pc_relative */
643 complain_overflow_bitfield, /* complain_on_overflow */
644 bfd_elf_generic_reloc, /* special_function */
645 "R_PPC64_UADDR16", /* name */
646 FALSE, /* partial_inplace */
648 0xffff, /* dst_mask */
649 FALSE), /* pcrel_offset */
651 /* 32-bit PC relative. */
652 HOWTO (R_PPC64_REL32, /* type */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
656 TRUE, /* pc_relative */
658 complain_overflow_signed, /* complain_on_overflow */
659 bfd_elf_generic_reloc, /* special_function */
660 "R_PPC64_REL32", /* name */
661 FALSE, /* partial_inplace */
663 0xffffffff, /* dst_mask */
664 TRUE), /* pcrel_offset */
666 /* 32-bit relocation to the symbol's procedure linkage table. */
667 HOWTO (R_PPC64_PLT32, /* type */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_bitfield, /* complain_on_overflow */
674 ppc64_elf_unhandled_reloc, /* special_function */
675 "R_PPC64_PLT32", /* name */
676 FALSE, /* partial_inplace */
678 0xffffffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
682 FIXME: R_PPC64_PLTREL32 not supported. */
683 HOWTO (R_PPC64_PLTREL32, /* type */
685 2, /* size (0 = byte, 1 = short, 2 = long) */
687 TRUE, /* pc_relative */
689 complain_overflow_signed, /* complain_on_overflow */
690 bfd_elf_generic_reloc, /* special_function */
691 "R_PPC64_PLTREL32", /* name */
692 FALSE, /* partial_inplace */
694 0xffffffff, /* dst_mask */
695 TRUE), /* pcrel_offset */
697 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
699 HOWTO (R_PPC64_PLT16_LO, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_dont, /* complain_on_overflow */
706 ppc64_elf_unhandled_reloc, /* special_function */
707 "R_PPC64_PLT16_LO", /* name */
708 FALSE, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
715 HOWTO (R_PPC64_PLT16_HI, /* type */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
719 FALSE, /* pc_relative */
721 complain_overflow_signed, /* complain_on_overflow */
722 ppc64_elf_unhandled_reloc, /* special_function */
723 "R_PPC64_PLT16_HI", /* name */
724 FALSE, /* partial_inplace */
726 0xffff, /* dst_mask */
727 FALSE), /* pcrel_offset */
729 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
731 HOWTO (R_PPC64_PLT16_HA, /* type */
733 1, /* size (0 = byte, 1 = short, 2 = long) */
735 FALSE, /* pc_relative */
737 complain_overflow_signed, /* complain_on_overflow */
738 ppc64_elf_unhandled_reloc, /* special_function */
739 "R_PPC64_PLT16_HA", /* name */
740 FALSE, /* partial_inplace */
742 0xffff, /* dst_mask */
743 FALSE), /* pcrel_offset */
745 /* 16-bit section relative relocation. */
746 HOWTO (R_PPC64_SECTOFF, /* type */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
750 FALSE, /* pc_relative */
752 complain_overflow_signed, /* complain_on_overflow */
753 ppc64_elf_sectoff_reloc, /* special_function */
754 "R_PPC64_SECTOFF", /* name */
755 FALSE, /* partial_inplace */
757 0xffff, /* dst_mask */
758 FALSE), /* pcrel_offset */
760 /* Like R_PPC64_SECTOFF, but no overflow warning. */
761 HOWTO (R_PPC64_SECTOFF_LO, /* type */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
765 FALSE, /* pc_relative */
767 complain_overflow_dont, /* complain_on_overflow */
768 ppc64_elf_sectoff_reloc, /* special_function */
769 "R_PPC64_SECTOFF_LO", /* name */
770 FALSE, /* partial_inplace */
772 0xffff, /* dst_mask */
773 FALSE), /* pcrel_offset */
775 /* 16-bit upper half section relative relocation. */
776 HOWTO (R_PPC64_SECTOFF_HI, /* type */
778 1, /* size (0 = byte, 1 = short, 2 = long) */
780 FALSE, /* pc_relative */
782 complain_overflow_signed, /* complain_on_overflow */
783 ppc64_elf_sectoff_reloc, /* special_function */
784 "R_PPC64_SECTOFF_HI", /* name */
785 FALSE, /* partial_inplace */
787 0xffff, /* dst_mask */
788 FALSE), /* pcrel_offset */
790 /* 16-bit upper half adjusted section relative relocation. */
791 HOWTO (R_PPC64_SECTOFF_HA, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE, /* pc_relative */
797 complain_overflow_signed, /* complain_on_overflow */
798 ppc64_elf_sectoff_ha_reloc, /* special_function */
799 "R_PPC64_SECTOFF_HA", /* name */
800 FALSE, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
805 /* Like R_PPC64_REL24 without touching the two least significant bits. */
806 HOWTO (R_PPC64_REL30, /* type */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
810 TRUE, /* pc_relative */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_PPC64_REL30", /* name */
815 FALSE, /* partial_inplace */
817 0xfffffffc, /* dst_mask */
818 TRUE), /* pcrel_offset */
820 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
822 /* A standard 64-bit relocation. */
823 HOWTO (R_PPC64_ADDR64, /* type */
825 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
827 FALSE, /* pc_relative */
829 complain_overflow_dont, /* complain_on_overflow */
830 bfd_elf_generic_reloc, /* special_function */
831 "R_PPC64_ADDR64", /* name */
832 FALSE, /* partial_inplace */
834 ONES (64), /* dst_mask */
835 FALSE), /* pcrel_offset */
837 /* The bits 32-47 of an address. */
838 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE, /* pc_relative */
844 complain_overflow_dont, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_ADDR16_HIGHER", /* name */
847 FALSE, /* partial_inplace */
849 0xffff, /* dst_mask */
850 FALSE), /* pcrel_offset */
852 /* The bits 32-47 of an address, plus 1 if the contents of the low
853 16 bits, treated as a signed number, is negative. */
854 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
856 1, /* size (0 = byte, 1 = short, 2 = long) */
858 FALSE, /* pc_relative */
860 complain_overflow_dont, /* complain_on_overflow */
861 ppc64_elf_ha_reloc, /* special_function */
862 "R_PPC64_ADDR16_HIGHERA", /* name */
863 FALSE, /* partial_inplace */
865 0xffff, /* dst_mask */
866 FALSE), /* pcrel_offset */
868 /* The bits 48-63 of an address. */
869 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
873 FALSE, /* pc_relative */
875 complain_overflow_dont, /* complain_on_overflow */
876 bfd_elf_generic_reloc, /* special_function */
877 "R_PPC64_ADDR16_HIGHEST", /* name */
878 FALSE, /* partial_inplace */
880 0xffff, /* dst_mask */
881 FALSE), /* pcrel_offset */
883 /* The bits 48-63 of an address, plus 1 if the contents of the low
884 16 bits, treated as a signed number, is negative. */
885 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
889 FALSE, /* pc_relative */
891 complain_overflow_dont, /* complain_on_overflow */
892 ppc64_elf_ha_reloc, /* special_function */
893 "R_PPC64_ADDR16_HIGHESTA", /* name */
894 FALSE, /* partial_inplace */
896 0xffff, /* dst_mask */
897 FALSE), /* pcrel_offset */
899 /* Like ADDR64, but may be unaligned. */
900 HOWTO (R_PPC64_UADDR64, /* type */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
904 FALSE, /* pc_relative */
906 complain_overflow_dont, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_PPC64_UADDR64", /* name */
909 FALSE, /* partial_inplace */
911 ONES (64), /* dst_mask */
912 FALSE), /* pcrel_offset */
914 /* 64-bit relative relocation. */
915 HOWTO (R_PPC64_REL64, /* type */
917 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
919 TRUE, /* pc_relative */
921 complain_overflow_dont, /* complain_on_overflow */
922 bfd_elf_generic_reloc, /* special_function */
923 "R_PPC64_REL64", /* name */
924 FALSE, /* partial_inplace */
926 ONES (64), /* dst_mask */
927 TRUE), /* pcrel_offset */
929 /* 64-bit relocation to the symbol's procedure linkage table. */
930 HOWTO (R_PPC64_PLT64, /* type */
932 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
934 FALSE, /* pc_relative */
936 complain_overflow_dont, /* complain_on_overflow */
937 ppc64_elf_unhandled_reloc, /* special_function */
938 "R_PPC64_PLT64", /* name */
939 FALSE, /* partial_inplace */
941 ONES (64), /* dst_mask */
942 FALSE), /* pcrel_offset */
944 /* 64-bit PC relative relocation to the symbol's procedure linkage
946 /* FIXME: R_PPC64_PLTREL64 not supported. */
947 HOWTO (R_PPC64_PLTREL64, /* type */
949 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
951 TRUE, /* pc_relative */
953 complain_overflow_dont, /* complain_on_overflow */
954 ppc64_elf_unhandled_reloc, /* special_function */
955 "R_PPC64_PLTREL64", /* name */
956 FALSE, /* partial_inplace */
958 ONES (64), /* dst_mask */
959 TRUE), /* pcrel_offset */
961 /* 16 bit TOC-relative relocation. */
963 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
964 HOWTO (R_PPC64_TOC16, /* type */
966 1, /* size (0 = byte, 1 = short, 2 = long) */
968 FALSE, /* pc_relative */
970 complain_overflow_signed, /* complain_on_overflow */
971 ppc64_elf_toc_reloc, /* special_function */
972 "R_PPC64_TOC16", /* name */
973 FALSE, /* partial_inplace */
975 0xffff, /* dst_mask */
976 FALSE), /* pcrel_offset */
978 /* 16 bit TOC-relative relocation without overflow. */
980 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
981 HOWTO (R_PPC64_TOC16_LO, /* type */
983 1, /* size (0 = byte, 1 = short, 2 = long) */
985 FALSE, /* pc_relative */
987 complain_overflow_dont, /* complain_on_overflow */
988 ppc64_elf_toc_reloc, /* special_function */
989 "R_PPC64_TOC16_LO", /* name */
990 FALSE, /* partial_inplace */
992 0xffff, /* dst_mask */
993 FALSE), /* pcrel_offset */
995 /* 16 bit TOC-relative relocation, high 16 bits. */
997 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
998 HOWTO (R_PPC64_TOC16_HI, /* type */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 FALSE, /* pc_relative */
1004 complain_overflow_signed, /* complain_on_overflow */
1005 ppc64_elf_toc_reloc, /* special_function */
1006 "R_PPC64_TOC16_HI", /* name */
1007 FALSE, /* partial_inplace */
1009 0xffff, /* dst_mask */
1010 FALSE), /* pcrel_offset */
1012 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1013 contents of the low 16 bits, treated as a signed number, is
1016 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1017 HOWTO (R_PPC64_TOC16_HA, /* type */
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE, /* pc_relative */
1023 complain_overflow_signed, /* complain_on_overflow */
1024 ppc64_elf_toc_ha_reloc, /* special_function */
1025 "R_PPC64_TOC16_HA", /* name */
1026 FALSE, /* partial_inplace */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1031 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1033 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1034 HOWTO (R_PPC64_TOC, /* type */
1036 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1038 FALSE, /* pc_relative */
1040 complain_overflow_dont, /* complain_on_overflow */
1041 ppc64_elf_toc64_reloc, /* special_function */
1042 "R_PPC64_TOC", /* name */
1043 FALSE, /* partial_inplace */
1045 ONES (64), /* dst_mask */
1046 FALSE), /* pcrel_offset */
1048 /* Like R_PPC64_GOT16, but also informs the link editor that the
1049 value to relocate may (!) refer to a PLT entry which the link
1050 editor (a) may replace with the symbol value. If the link editor
1051 is unable to fully resolve the symbol, it may (b) create a PLT
1052 entry and store the address to the new PLT entry in the GOT.
1053 This permits lazy resolution of function symbols at run time.
1054 The link editor may also skip all of this and just (c) emit a
1055 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1056 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1057 HOWTO (R_PPC64_PLTGOT16, /* type */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE, /* pc_relative */
1063 complain_overflow_signed, /* complain_on_overflow */
1064 ppc64_elf_unhandled_reloc, /* special_function */
1065 "R_PPC64_PLTGOT16", /* name */
1066 FALSE, /* partial_inplace */
1068 0xffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1071 /* Like R_PPC64_PLTGOT16, but without overflow. */
1072 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1073 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 ppc64_elf_unhandled_reloc, /* special_function */
1081 "R_PPC64_PLTGOT16_LO", /* name */
1082 FALSE, /* partial_inplace */
1084 0xffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1088 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1089 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1090 16, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE, /* pc_relative */
1095 complain_overflow_signed, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc, /* special_function */
1097 "R_PPC64_PLTGOT16_HI", /* name */
1098 FALSE, /* partial_inplace */
1100 0xffff, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1103 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1104 1 if the contents of the low 16 bits, treated as a signed number,
1106 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1107 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1108 16, /* rightshift */
1109 1, /* size (0 = byte, 1 = short, 2 = long) */
1111 FALSE, /* pc_relative */
1113 complain_overflow_signed, /* complain_on_overflow */
1114 ppc64_elf_unhandled_reloc, /* special_function */
1115 "R_PPC64_PLTGOT16_HA", /* name */
1116 FALSE, /* partial_inplace */
1118 0xffff, /* dst_mask */
1119 FALSE), /* pcrel_offset */
1121 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1122 HOWTO (R_PPC64_ADDR16_DS, /* type */
1124 1, /* size (0 = byte, 1 = short, 2 = long) */
1126 FALSE, /* pc_relative */
1128 complain_overflow_signed, /* complain_on_overflow */
1129 bfd_elf_generic_reloc, /* special_function */
1130 "R_PPC64_ADDR16_DS", /* name */
1131 FALSE, /* partial_inplace */
1133 0xfffc, /* dst_mask */
1134 FALSE), /* pcrel_offset */
1136 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1137 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1139 1, /* size (0 = byte, 1 = short, 2 = long) */
1141 FALSE, /* pc_relative */
1143 complain_overflow_dont,/* complain_on_overflow */
1144 bfd_elf_generic_reloc, /* special_function */
1145 "R_PPC64_ADDR16_LO_DS",/* name */
1146 FALSE, /* partial_inplace */
1148 0xfffc, /* dst_mask */
1149 FALSE), /* pcrel_offset */
1151 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1152 HOWTO (R_PPC64_GOT16_DS, /* type */
1154 1, /* size (0 = byte, 1 = short, 2 = long) */
1156 FALSE, /* pc_relative */
1158 complain_overflow_signed, /* complain_on_overflow */
1159 ppc64_elf_unhandled_reloc, /* special_function */
1160 "R_PPC64_GOT16_DS", /* name */
1161 FALSE, /* partial_inplace */
1163 0xfffc, /* dst_mask */
1164 FALSE), /* pcrel_offset */
1166 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1167 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1171 FALSE, /* pc_relative */
1173 complain_overflow_dont, /* complain_on_overflow */
1174 ppc64_elf_unhandled_reloc, /* special_function */
1175 "R_PPC64_GOT16_LO_DS", /* name */
1176 FALSE, /* partial_inplace */
1178 0xfffc, /* dst_mask */
1179 FALSE), /* pcrel_offset */
1181 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1182 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1184 1, /* size (0 = byte, 1 = short, 2 = long) */
1186 FALSE, /* pc_relative */
1188 complain_overflow_dont, /* complain_on_overflow */
1189 ppc64_elf_unhandled_reloc, /* special_function */
1190 "R_PPC64_PLT16_LO_DS", /* name */
1191 FALSE, /* partial_inplace */
1193 0xfffc, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1196 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1197 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 FALSE, /* pc_relative */
1203 complain_overflow_signed, /* complain_on_overflow */
1204 ppc64_elf_sectoff_reloc, /* special_function */
1205 "R_PPC64_SECTOFF_DS", /* name */
1206 FALSE, /* partial_inplace */
1208 0xfffc, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1211 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1212 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE, /* pc_relative */
1218 complain_overflow_dont, /* complain_on_overflow */
1219 ppc64_elf_sectoff_reloc, /* special_function */
1220 "R_PPC64_SECTOFF_LO_DS",/* name */
1221 FALSE, /* partial_inplace */
1223 0xfffc, /* dst_mask */
1224 FALSE), /* pcrel_offset */
1226 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1227 HOWTO (R_PPC64_TOC16_DS, /* type */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE, /* pc_relative */
1233 complain_overflow_signed, /* complain_on_overflow */
1234 ppc64_elf_toc_reloc, /* special_function */
1235 "R_PPC64_TOC16_DS", /* name */
1236 FALSE, /* partial_inplace */
1238 0xfffc, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1241 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1242 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1244 1, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE, /* pc_relative */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc64_elf_toc_reloc, /* special_function */
1250 "R_PPC64_TOC16_LO_DS", /* name */
1251 FALSE, /* partial_inplace */
1253 0xfffc, /* dst_mask */
1254 FALSE), /* pcrel_offset */
1256 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1257 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1258 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1260 1, /* size (0 = byte, 1 = short, 2 = long) */
1262 FALSE, /* pc_relative */
1264 complain_overflow_signed, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_PLTGOT16_DS", /* name */
1267 FALSE, /* partial_inplace */
1269 0xfffc, /* dst_mask */
1270 FALSE), /* pcrel_offset */
1272 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1273 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1274 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 FALSE, /* pc_relative */
1280 complain_overflow_dont, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc, /* special_function */
1282 "R_PPC64_PLTGOT16_LO_DS",/* name */
1283 FALSE, /* partial_inplace */
1285 0xfffc, /* dst_mask */
1286 FALSE), /* pcrel_offset */
1288 /* Marker relocs for TLS. */
1291 2, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE, /* pc_relative */
1295 complain_overflow_dont, /* complain_on_overflow */
1296 bfd_elf_generic_reloc, /* special_function */
1297 "R_PPC64_TLS", /* name */
1298 FALSE, /* partial_inplace */
1301 FALSE), /* pcrel_offset */
1303 HOWTO (R_PPC64_TLSGD,
1305 2, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE, /* pc_relative */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 bfd_elf_generic_reloc, /* special_function */
1311 "R_PPC64_TLSGD", /* name */
1312 FALSE, /* partial_inplace */
1315 FALSE), /* pcrel_offset */
1317 HOWTO (R_PPC64_TLSLD,
1319 2, /* size (0 = byte, 1 = short, 2 = long) */
1321 FALSE, /* pc_relative */
1323 complain_overflow_dont, /* complain_on_overflow */
1324 bfd_elf_generic_reloc, /* special_function */
1325 "R_PPC64_TLSLD", /* name */
1326 FALSE, /* partial_inplace */
1329 FALSE), /* pcrel_offset */
1331 HOWTO (R_PPC64_TOCSAVE,
1333 2, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE, /* pc_relative */
1337 complain_overflow_dont, /* complain_on_overflow */
1338 bfd_elf_generic_reloc, /* special_function */
1339 "R_PPC64_TOCSAVE", /* name */
1340 FALSE, /* partial_inplace */
1343 FALSE), /* pcrel_offset */
1345 /* Computes the load module index of the load module that contains the
1346 definition of its TLS sym. */
1347 HOWTO (R_PPC64_DTPMOD64,
1349 4, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE, /* pc_relative */
1353 complain_overflow_dont, /* complain_on_overflow */
1354 ppc64_elf_unhandled_reloc, /* special_function */
1355 "R_PPC64_DTPMOD64", /* name */
1356 FALSE, /* partial_inplace */
1358 ONES (64), /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* Computes a dtv-relative displacement, the difference between the value
1362 of sym+add and the base address of the thread-local storage block that
1363 contains the definition of sym, minus 0x8000. */
1364 HOWTO (R_PPC64_DTPREL64,
1366 4, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc, /* special_function */
1372 "R_PPC64_DTPREL64", /* name */
1373 FALSE, /* partial_inplace */
1375 ONES (64), /* dst_mask */
1376 FALSE), /* pcrel_offset */
1378 /* A 16 bit dtprel reloc. */
1379 HOWTO (R_PPC64_DTPREL16,
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE, /* pc_relative */
1385 complain_overflow_signed, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc, /* special_function */
1387 "R_PPC64_DTPREL16", /* name */
1388 FALSE, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1393 /* Like DTPREL16, but no overflow. */
1394 HOWTO (R_PPC64_DTPREL16_LO,
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 FALSE, /* pc_relative */
1400 complain_overflow_dont, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc, /* special_function */
1402 "R_PPC64_DTPREL16_LO", /* name */
1403 FALSE, /* partial_inplace */
1405 0xffff, /* dst_mask */
1406 FALSE), /* pcrel_offset */
1408 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1409 HOWTO (R_PPC64_DTPREL16_HI,
1410 16, /* rightshift */
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 FALSE, /* pc_relative */
1415 complain_overflow_signed, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_DTPREL16_HI", /* name */
1418 FALSE, /* partial_inplace */
1420 0xffff, /* dst_mask */
1421 FALSE), /* pcrel_offset */
1423 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1424 HOWTO (R_PPC64_DTPREL16_HA,
1425 16, /* rightshift */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE, /* pc_relative */
1430 complain_overflow_signed, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_DTPREL16_HA", /* name */
1433 FALSE, /* partial_inplace */
1435 0xffff, /* dst_mask */
1436 FALSE), /* pcrel_offset */
1438 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1439 HOWTO (R_PPC64_DTPREL16_HIGHER,
1440 32, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 FALSE, /* pc_relative */
1445 complain_overflow_dont, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_DTPREL16_HIGHER", /* name */
1448 FALSE, /* partial_inplace */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1453 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1454 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1455 32, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 FALSE, /* pc_relative */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc, /* special_function */
1462 "R_PPC64_DTPREL16_HIGHERA", /* name */
1463 FALSE, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1468 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1470 48, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE, /* pc_relative */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_DTPREL16_HIGHEST", /* name */
1478 FALSE, /* partial_inplace */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1483 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1485 48, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE, /* pc_relative */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1493 FALSE, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1498 /* Like DTPREL16, but for insns with a DS field. */
1499 HOWTO (R_PPC64_DTPREL16_DS,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE, /* pc_relative */
1505 complain_overflow_signed, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_DTPREL16_DS", /* name */
1508 FALSE, /* partial_inplace */
1510 0xfffc, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1513 /* Like DTPREL16_DS, but no overflow. */
1514 HOWTO (R_PPC64_DTPREL16_LO_DS,
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE, /* pc_relative */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_DTPREL16_LO_DS", /* name */
1523 FALSE, /* partial_inplace */
1525 0xfffc, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1528 /* Computes a tp-relative displacement, the difference between the value of
1529 sym+add and the value of the thread pointer (r13). */
1530 HOWTO (R_PPC64_TPREL64,
1532 4, /* size (0 = byte, 1 = short, 2 = long) */
1534 FALSE, /* pc_relative */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc, /* special_function */
1538 "R_PPC64_TPREL64", /* name */
1539 FALSE, /* partial_inplace */
1541 ONES (64), /* dst_mask */
1542 FALSE), /* pcrel_offset */
1544 /* A 16 bit tprel reloc. */
1545 HOWTO (R_PPC64_TPREL16,
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE, /* pc_relative */
1551 complain_overflow_signed, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc, /* special_function */
1553 "R_PPC64_TPREL16", /* name */
1554 FALSE, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1559 /* Like TPREL16, but no overflow. */
1560 HOWTO (R_PPC64_TPREL16_LO,
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE, /* pc_relative */
1566 complain_overflow_dont, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc, /* special_function */
1568 "R_PPC64_TPREL16_LO", /* name */
1569 FALSE, /* partial_inplace */
1571 0xffff, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1574 /* Like TPREL16_LO, but next higher group of 16 bits. */
1575 HOWTO (R_PPC64_TPREL16_HI,
1576 16, /* rightshift */
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE, /* pc_relative */
1581 complain_overflow_signed, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc, /* special_function */
1583 "R_PPC64_TPREL16_HI", /* name */
1584 FALSE, /* partial_inplace */
1586 0xffff, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1589 /* Like TPREL16_HI, but adjust for low 16 bits. */
1590 HOWTO (R_PPC64_TPREL16_HA,
1591 16, /* rightshift */
1592 1, /* size (0 = byte, 1 = short, 2 = long) */
1594 FALSE, /* pc_relative */
1596 complain_overflow_signed, /* complain_on_overflow */
1597 ppc64_elf_unhandled_reloc, /* special_function */
1598 "R_PPC64_TPREL16_HA", /* name */
1599 FALSE, /* partial_inplace */
1601 0xffff, /* dst_mask */
1602 FALSE), /* pcrel_offset */
1604 /* Like TPREL16_HI, but next higher group of 16 bits. */
1605 HOWTO (R_PPC64_TPREL16_HIGHER,
1606 32, /* rightshift */
1607 1, /* size (0 = byte, 1 = short, 2 = long) */
1609 FALSE, /* pc_relative */
1611 complain_overflow_dont, /* complain_on_overflow */
1612 ppc64_elf_unhandled_reloc, /* special_function */
1613 "R_PPC64_TPREL16_HIGHER", /* name */
1614 FALSE, /* partial_inplace */
1616 0xffff, /* dst_mask */
1617 FALSE), /* pcrel_offset */
1619 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1620 HOWTO (R_PPC64_TPREL16_HIGHERA,
1621 32, /* rightshift */
1622 1, /* size (0 = byte, 1 = short, 2 = long) */
1624 FALSE, /* pc_relative */
1626 complain_overflow_dont, /* complain_on_overflow */
1627 ppc64_elf_unhandled_reloc, /* special_function */
1628 "R_PPC64_TPREL16_HIGHERA", /* name */
1629 FALSE, /* partial_inplace */
1631 0xffff, /* dst_mask */
1632 FALSE), /* pcrel_offset */
1634 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1635 HOWTO (R_PPC64_TPREL16_HIGHEST,
1636 48, /* rightshift */
1637 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE, /* pc_relative */
1641 complain_overflow_dont, /* complain_on_overflow */
1642 ppc64_elf_unhandled_reloc, /* special_function */
1643 "R_PPC64_TPREL16_HIGHEST", /* name */
1644 FALSE, /* partial_inplace */
1646 0xffff, /* dst_mask */
1647 FALSE), /* pcrel_offset */
1649 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1650 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1651 48, /* rightshift */
1652 1, /* size (0 = byte, 1 = short, 2 = long) */
1654 FALSE, /* pc_relative */
1656 complain_overflow_dont, /* complain_on_overflow */
1657 ppc64_elf_unhandled_reloc, /* special_function */
1658 "R_PPC64_TPREL16_HIGHESTA", /* name */
1659 FALSE, /* partial_inplace */
1661 0xffff, /* dst_mask */
1662 FALSE), /* pcrel_offset */
1664 /* Like TPREL16, but for insns with a DS field. */
1665 HOWTO (R_PPC64_TPREL16_DS,
1667 1, /* size (0 = byte, 1 = short, 2 = long) */
1669 FALSE, /* pc_relative */
1671 complain_overflow_signed, /* complain_on_overflow */
1672 ppc64_elf_unhandled_reloc, /* special_function */
1673 "R_PPC64_TPREL16_DS", /* name */
1674 FALSE, /* partial_inplace */
1676 0xfffc, /* dst_mask */
1677 FALSE), /* pcrel_offset */
1679 /* Like TPREL16_DS, but no overflow. */
1680 HOWTO (R_PPC64_TPREL16_LO_DS,
1682 1, /* size (0 = byte, 1 = short, 2 = long) */
1684 FALSE, /* pc_relative */
1686 complain_overflow_dont, /* complain_on_overflow */
1687 ppc64_elf_unhandled_reloc, /* special_function */
1688 "R_PPC64_TPREL16_LO_DS", /* name */
1689 FALSE, /* partial_inplace */
1691 0xfffc, /* dst_mask */
1692 FALSE), /* pcrel_offset */
1694 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1695 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1696 to the first entry relative to the TOC base (r2). */
1697 HOWTO (R_PPC64_GOT_TLSGD16,
1699 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 FALSE, /* pc_relative */
1703 complain_overflow_signed, /* complain_on_overflow */
1704 ppc64_elf_unhandled_reloc, /* special_function */
1705 "R_PPC64_GOT_TLSGD16", /* name */
1706 FALSE, /* partial_inplace */
1708 0xffff, /* dst_mask */
1709 FALSE), /* pcrel_offset */
1711 /* Like GOT_TLSGD16, but no overflow. */
1712 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1714 1, /* size (0 = byte, 1 = short, 2 = long) */
1716 FALSE, /* pc_relative */
1718 complain_overflow_dont, /* complain_on_overflow */
1719 ppc64_elf_unhandled_reloc, /* special_function */
1720 "R_PPC64_GOT_TLSGD16_LO", /* name */
1721 FALSE, /* partial_inplace */
1723 0xffff, /* dst_mask */
1724 FALSE), /* pcrel_offset */
1726 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1727 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1728 16, /* rightshift */
1729 1, /* size (0 = byte, 1 = short, 2 = long) */
1731 FALSE, /* pc_relative */
1733 complain_overflow_signed, /* complain_on_overflow */
1734 ppc64_elf_unhandled_reloc, /* special_function */
1735 "R_PPC64_GOT_TLSGD16_HI", /* name */
1736 FALSE, /* partial_inplace */
1738 0xffff, /* dst_mask */
1739 FALSE), /* pcrel_offset */
1741 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1742 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 FALSE, /* pc_relative */
1748 complain_overflow_signed, /* complain_on_overflow */
1749 ppc64_elf_unhandled_reloc, /* special_function */
1750 "R_PPC64_GOT_TLSGD16_HA", /* name */
1751 FALSE, /* partial_inplace */
1753 0xffff, /* dst_mask */
1754 FALSE), /* pcrel_offset */
1756 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1757 with values (sym+add)@dtpmod and zero, and computes the offset to the
1758 first entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_TLSLD16,
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE, /* pc_relative */
1765 complain_overflow_signed, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_TLSLD16", /* name */
1768 FALSE, /* partial_inplace */
1770 0xffff, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1773 /* Like GOT_TLSLD16, but no overflow. */
1774 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE, /* pc_relative */
1780 complain_overflow_dont, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc, /* special_function */
1782 "R_PPC64_GOT_TLSLD16_LO", /* name */
1783 FALSE, /* partial_inplace */
1785 0xffff, /* dst_mask */
1786 FALSE), /* pcrel_offset */
1788 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1790 16, /* rightshift */
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 FALSE, /* pc_relative */
1795 complain_overflow_signed, /* complain_on_overflow */
1796 ppc64_elf_unhandled_reloc, /* special_function */
1797 "R_PPC64_GOT_TLSLD16_HI", /* name */
1798 FALSE, /* partial_inplace */
1800 0xffff, /* dst_mask */
1801 FALSE), /* pcrel_offset */
1803 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE, /* pc_relative */
1810 complain_overflow_signed, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc, /* special_function */
1812 "R_PPC64_GOT_TLSLD16_HA", /* name */
1813 FALSE, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE), /* pcrel_offset */
1818 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1819 the offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE, /* pc_relative */
1826 complain_overflow_signed, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc, /* special_function */
1828 "R_PPC64_GOT_DTPREL16_DS", /* name */
1829 FALSE, /* partial_inplace */
1831 0xfffc, /* dst_mask */
1832 FALSE), /* pcrel_offset */
1834 /* Like GOT_DTPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE, /* pc_relative */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc, /* special_function */
1843 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1844 FALSE, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE), /* pcrel_offset */
1849 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1851 16, /* rightshift */
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE, /* pc_relative */
1856 complain_overflow_signed, /* complain_on_overflow */
1857 ppc64_elf_unhandled_reloc, /* special_function */
1858 "R_PPC64_GOT_DTPREL16_HI", /* name */
1859 FALSE, /* partial_inplace */
1861 0xffff, /* dst_mask */
1862 FALSE), /* pcrel_offset */
1864 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1869 FALSE, /* pc_relative */
1871 complain_overflow_signed, /* complain_on_overflow */
1872 ppc64_elf_unhandled_reloc, /* special_function */
1873 "R_PPC64_GOT_DTPREL16_HA", /* name */
1874 FALSE, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE), /* pcrel_offset */
1879 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1880 offset to the entry relative to the TOC base (r2). */
1881 HOWTO (R_PPC64_GOT_TPREL16_DS,
1883 1, /* size (0 = byte, 1 = short, 2 = long) */
1885 FALSE, /* pc_relative */
1887 complain_overflow_signed, /* complain_on_overflow */
1888 ppc64_elf_unhandled_reloc, /* special_function */
1889 "R_PPC64_GOT_TPREL16_DS", /* name */
1890 FALSE, /* partial_inplace */
1892 0xfffc, /* dst_mask */
1893 FALSE), /* pcrel_offset */
1895 /* Like GOT_TPREL16_DS, but no overflow. */
1896 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1898 1, /* size (0 = byte, 1 = short, 2 = long) */
1900 FALSE, /* pc_relative */
1902 complain_overflow_dont, /* complain_on_overflow */
1903 ppc64_elf_unhandled_reloc, /* special_function */
1904 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1905 FALSE, /* partial_inplace */
1907 0xfffc, /* dst_mask */
1908 FALSE), /* pcrel_offset */
1910 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1911 HOWTO (R_PPC64_GOT_TPREL16_HI,
1912 16, /* rightshift */
1913 1, /* size (0 = byte, 1 = short, 2 = long) */
1915 FALSE, /* pc_relative */
1917 complain_overflow_signed, /* complain_on_overflow */
1918 ppc64_elf_unhandled_reloc, /* special_function */
1919 "R_PPC64_GOT_TPREL16_HI", /* name */
1920 FALSE, /* partial_inplace */
1922 0xffff, /* dst_mask */
1923 FALSE), /* pcrel_offset */
1925 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1926 HOWTO (R_PPC64_GOT_TPREL16_HA,
1927 16, /* rightshift */
1928 1, /* size (0 = byte, 1 = short, 2 = long) */
1930 FALSE, /* pc_relative */
1932 complain_overflow_signed, /* complain_on_overflow */
1933 ppc64_elf_unhandled_reloc, /* special_function */
1934 "R_PPC64_GOT_TPREL16_HA", /* name */
1935 FALSE, /* partial_inplace */
1937 0xffff, /* dst_mask */
1938 FALSE), /* pcrel_offset */
1940 HOWTO (R_PPC64_JMP_IREL, /* type */
1942 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1944 FALSE, /* pc_relative */
1946 complain_overflow_dont, /* complain_on_overflow */
1947 ppc64_elf_unhandled_reloc, /* special_function */
1948 "R_PPC64_JMP_IREL", /* name */
1949 FALSE, /* partial_inplace */
1952 FALSE), /* pcrel_offset */
1954 HOWTO (R_PPC64_IRELATIVE, /* type */
1956 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1958 FALSE, /* pc_relative */
1960 complain_overflow_dont, /* complain_on_overflow */
1961 bfd_elf_generic_reloc, /* special_function */
1962 "R_PPC64_IRELATIVE", /* name */
1963 FALSE, /* partial_inplace */
1965 ONES (64), /* dst_mask */
1966 FALSE), /* pcrel_offset */
1968 /* A 16 bit relative relocation. */
1969 HOWTO (R_PPC64_REL16, /* type */
1971 1, /* size (0 = byte, 1 = short, 2 = long) */
1973 TRUE, /* pc_relative */
1975 complain_overflow_signed, /* complain_on_overflow */
1976 bfd_elf_generic_reloc, /* special_function */
1977 "R_PPC64_REL16", /* name */
1978 FALSE, /* partial_inplace */
1980 0xffff, /* dst_mask */
1981 TRUE), /* pcrel_offset */
1983 /* A 16 bit relative relocation without overflow. */
1984 HOWTO (R_PPC64_REL16_LO, /* type */
1986 1, /* size (0 = byte, 1 = short, 2 = long) */
1988 TRUE, /* pc_relative */
1990 complain_overflow_dont,/* complain_on_overflow */
1991 bfd_elf_generic_reloc, /* special_function */
1992 "R_PPC64_REL16_LO", /* name */
1993 FALSE, /* partial_inplace */
1995 0xffff, /* dst_mask */
1996 TRUE), /* pcrel_offset */
1998 /* The high order 16 bits of a relative address. */
1999 HOWTO (R_PPC64_REL16_HI, /* type */
2000 16, /* rightshift */
2001 1, /* size (0 = byte, 1 = short, 2 = long) */
2003 TRUE, /* pc_relative */
2005 complain_overflow_signed, /* complain_on_overflow */
2006 bfd_elf_generic_reloc, /* special_function */
2007 "R_PPC64_REL16_HI", /* name */
2008 FALSE, /* partial_inplace */
2010 0xffff, /* dst_mask */
2011 TRUE), /* pcrel_offset */
2013 /* The high order 16 bits of a relative address, plus 1 if the contents of
2014 the low 16 bits, treated as a signed number, is negative. */
2015 HOWTO (R_PPC64_REL16_HA, /* type */
2016 16, /* rightshift */
2017 1, /* size (0 = byte, 1 = short, 2 = long) */
2019 TRUE, /* pc_relative */
2021 complain_overflow_signed, /* complain_on_overflow */
2022 ppc64_elf_ha_reloc, /* special_function */
2023 "R_PPC64_REL16_HA", /* name */
2024 FALSE, /* partial_inplace */
2026 0xffff, /* dst_mask */
2027 TRUE), /* pcrel_offset */
2029 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2030 HOWTO (R_PPC64_REL16DX_HA, /* type */
2031 16, /* rightshift */
2032 2, /* size (0 = byte, 1 = short, 2 = long) */
2034 TRUE, /* pc_relative */
2036 complain_overflow_signed, /* complain_on_overflow */
2037 ppc64_elf_ha_reloc, /* special_function */
2038 "R_PPC64_REL16DX_HA", /* name */
2039 FALSE, /* partial_inplace */
2041 0x1fffc1, /* dst_mask */
2042 TRUE), /* pcrel_offset */
2044 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2045 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2046 16, /* rightshift */
2047 1, /* size (0 = byte, 1 = short, 2 = long) */
2049 FALSE, /* pc_relative */
2051 complain_overflow_dont, /* complain_on_overflow */
2052 bfd_elf_generic_reloc, /* special_function */
2053 "R_PPC64_ADDR16_HIGH", /* name */
2054 FALSE, /* partial_inplace */
2056 0xffff, /* dst_mask */
2057 FALSE), /* pcrel_offset */
2059 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2060 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2061 16, /* rightshift */
2062 1, /* size (0 = byte, 1 = short, 2 = long) */
2064 FALSE, /* pc_relative */
2066 complain_overflow_dont, /* complain_on_overflow */
2067 ppc64_elf_ha_reloc, /* special_function */
2068 "R_PPC64_ADDR16_HIGHA", /* name */
2069 FALSE, /* partial_inplace */
2071 0xffff, /* dst_mask */
2072 FALSE), /* pcrel_offset */
2074 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2075 HOWTO (R_PPC64_DTPREL16_HIGH,
2076 16, /* rightshift */
2077 1, /* size (0 = byte, 1 = short, 2 = long) */
2079 FALSE, /* pc_relative */
2081 complain_overflow_dont, /* complain_on_overflow */
2082 ppc64_elf_unhandled_reloc, /* special_function */
2083 "R_PPC64_DTPREL16_HIGH", /* name */
2084 FALSE, /* partial_inplace */
2086 0xffff, /* dst_mask */
2087 FALSE), /* pcrel_offset */
2089 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2090 HOWTO (R_PPC64_DTPREL16_HIGHA,
2091 16, /* rightshift */
2092 1, /* size (0 = byte, 1 = short, 2 = long) */
2094 FALSE, /* pc_relative */
2096 complain_overflow_dont, /* complain_on_overflow */
2097 ppc64_elf_unhandled_reloc, /* special_function */
2098 "R_PPC64_DTPREL16_HIGHA", /* name */
2099 FALSE, /* partial_inplace */
2101 0xffff, /* dst_mask */
2102 FALSE), /* pcrel_offset */
2104 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2105 HOWTO (R_PPC64_TPREL16_HIGH,
2106 16, /* rightshift */
2107 1, /* size (0 = byte, 1 = short, 2 = long) */
2109 FALSE, /* pc_relative */
2111 complain_overflow_dont, /* complain_on_overflow */
2112 ppc64_elf_unhandled_reloc, /* special_function */
2113 "R_PPC64_TPREL16_HIGH", /* name */
2114 FALSE, /* partial_inplace */
2116 0xffff, /* dst_mask */
2117 FALSE), /* pcrel_offset */
2119 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2120 HOWTO (R_PPC64_TPREL16_HIGHA,
2121 16, /* rightshift */
2122 1, /* size (0 = byte, 1 = short, 2 = long) */
2124 FALSE, /* pc_relative */
2126 complain_overflow_dont, /* complain_on_overflow */
2127 ppc64_elf_unhandled_reloc, /* special_function */
2128 "R_PPC64_TPREL16_HIGHA", /* name */
2129 FALSE, /* partial_inplace */
2131 0xffff, /* dst_mask */
2132 FALSE), /* pcrel_offset */
2134 /* Marker reloc on ELFv2 large-model function entry. */
2135 HOWTO (R_PPC64_ENTRY,
2137 2, /* size (0 = byte, 1 = short, 2 = long) */
2139 FALSE, /* pc_relative */
2141 complain_overflow_dont, /* complain_on_overflow */
2142 bfd_elf_generic_reloc, /* special_function */
2143 "R_PPC64_ENTRY", /* name */
2144 FALSE, /* partial_inplace */
2147 FALSE), /* pcrel_offset */
2149 /* Like ADDR64, but use local entry point of function. */
2150 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2152 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2154 FALSE, /* pc_relative */
2156 complain_overflow_dont, /* complain_on_overflow */
2157 bfd_elf_generic_reloc, /* special_function */
2158 "R_PPC64_ADDR64_LOCAL", /* name */
2159 FALSE, /* partial_inplace */
2161 ONES (64), /* dst_mask */
2162 FALSE), /* pcrel_offset */
2164 /* GNU extension to record C++ vtable hierarchy. */
2165 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2167 0, /* size (0 = byte, 1 = short, 2 = long) */
2169 FALSE, /* pc_relative */
2171 complain_overflow_dont, /* complain_on_overflow */
2172 NULL, /* special_function */
2173 "R_PPC64_GNU_VTINHERIT", /* name */
2174 FALSE, /* partial_inplace */
2177 FALSE), /* pcrel_offset */
2179 /* GNU extension to record C++ vtable member usage. */
2180 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2182 0, /* size (0 = byte, 1 = short, 2 = long) */
2184 FALSE, /* pc_relative */
2186 complain_overflow_dont, /* complain_on_overflow */
2187 NULL, /* special_function */
2188 "R_PPC64_GNU_VTENTRY", /* name */
2189 FALSE, /* partial_inplace */
2192 FALSE), /* pcrel_offset */
2196 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2200 ppc_howto_init (void)
2202 unsigned int i, type;
2204 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2206 type = ppc64_elf_howto_raw[i].type;
2207 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
2208 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2212 static reloc_howto_type *
2213 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2214 bfd_reloc_code_real_type code)
2216 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2218 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2219 /* Initialize howto table if needed. */
2227 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2229 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2231 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2233 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2235 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2237 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2239 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2241 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2243 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2245 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2247 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2249 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2251 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2253 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2255 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2257 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2259 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2261 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2263 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2265 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2267 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2269 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2271 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2273 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2275 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2277 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2279 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2281 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2283 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2285 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2287 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2289 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2291 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2293 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2295 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2297 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2299 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2301 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2303 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2305 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2307 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2309 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2311 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2313 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2315 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2317 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2319 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2321 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2323 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2325 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2327 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2329 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2331 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2333 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2335 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2337 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2339 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2341 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2343 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2345 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2347 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2349 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2351 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2353 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2355 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2357 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2359 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2361 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2363 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2365 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2367 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2369 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2371 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2373 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2375 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2377 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2379 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2381 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2383 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2385 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2387 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2389 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2391 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2393 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2395 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2397 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2399 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2401 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2403 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2405 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2407 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2409 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2411 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2413 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2415 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2417 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2419 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2421 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2423 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2425 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2427 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2429 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2431 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2433 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2435 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2437 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2439 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2441 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2443 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2445 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2447 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2449 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2451 case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
2453 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2455 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2457 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2461 return ppc64_elf_howto_table[r];
2464 static reloc_howto_type *
2465 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2470 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2471 if (ppc64_elf_howto_raw[i].name != NULL
2472 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2473 return &ppc64_elf_howto_raw[i];
2478 /* Set the howto pointer for a PowerPC ELF reloc. */
2481 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2482 Elf_Internal_Rela *dst)
2486 /* Initialize howto table if needed. */
2487 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2490 type = ELF64_R_TYPE (dst->r_info);
2491 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
2493 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2495 type = R_PPC64_NONE;
2497 cache_ptr->howto = ppc64_elf_howto_table[type];
2500 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2502 static bfd_reloc_status_type
2503 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2504 void *data, asection *input_section,
2505 bfd *output_bfd, char **error_message)
2507 enum elf_ppc64_reloc_type r_type;
2509 bfd_size_type octets;
2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2515 if (output_bfd != NULL)
2516 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2517 input_section, output_bfd, error_message);
2519 /* Adjust the addend for sign extension of the low 16 bits.
2520 We won't actually be using the low 16 bits, so trashing them
2522 reloc_entry->addend += 0x8000;
2523 r_type = reloc_entry->howto->type;
2524 if (r_type != R_PPC64_REL16DX_HA)
2525 return bfd_reloc_continue;
2528 if (!bfd_is_com_section (symbol->section))
2529 value = symbol->value;
2530 value += (reloc_entry->addend
2531 + symbol->section->output_offset
2532 + symbol->section->output_section->vma);
2533 value -= (reloc_entry->address
2534 + input_section->output_offset
2535 + input_section->output_section->vma);
2536 value = (bfd_signed_vma) value >> 16;
2538 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2539 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2541 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2542 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2543 if (value + 0x8000 > 0xffff)
2544 return bfd_reloc_overflow;
2545 return bfd_reloc_ok;
2548 static bfd_reloc_status_type
2549 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2550 void *data, asection *input_section,
2551 bfd *output_bfd, char **error_message)
2553 if (output_bfd != NULL)
2554 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2555 input_section, output_bfd, error_message);
2557 if (strcmp (symbol->section->name, ".opd") == 0
2558 && (symbol->section->owner->flags & DYNAMIC) == 0)
2560 bfd_vma dest = opd_entry_value (symbol->section,
2561 symbol->value + reloc_entry->addend,
2563 if (dest != (bfd_vma) -1)
2564 reloc_entry->addend = dest - (symbol->value
2565 + symbol->section->output_section->vma
2566 + symbol->section->output_offset);
2570 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2572 if (symbol->section->owner != abfd
2573 && 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)
7229 /* If -z nocopyreloc was given, don't generate them either. */
7230 if (info->nocopyreloc)
7236 /* If we didn't find any dynamic relocs in read-only sections, then
7237 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7238 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7244 /* Protected variables do not work with .dynbss. The copy in
7245 .dynbss won't be used by the shared library with the protected
7246 definition for the variable. Text relocations are preferable
7247 to an incorrect program. */
7248 if (h->protected_def)
7254 if (h->plt.plist != NULL)
7256 /* We should never get here, but unfortunately there are versions
7257 of gcc out there that improperly (for this ABI) put initialized
7258 function pointers, vtable refs and suchlike in read-only
7259 sections. Allow them to proceed, but warn that this might
7260 break at runtime. */
7261 info->callbacks->einfo
7262 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7263 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7264 h->root.root.string);
7267 /* This is a reference to a symbol defined by a dynamic object which
7268 is not a function. */
7270 /* We must allocate the symbol in our .dynbss section, which will
7271 become part of the .bss section of the executable. There will be
7272 an entry for this symbol in the .dynsym section. The dynamic
7273 object will contain position independent code, so all references
7274 from the dynamic object to this symbol will go through the global
7275 offset table. The dynamic linker will use the .dynsym entry to
7276 determine the address it must put in the global offset table, so
7277 both the dynamic object and the regular object will refer to the
7278 same memory location for the variable. */
7280 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7281 to copy the initial value out of the dynamic object and into the
7282 runtime process image. We need to remember the offset into the
7283 .rela.bss section we are going to use. */
7284 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7286 htab->relbss->size += sizeof (Elf64_External_Rela);
7292 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7295 /* If given a function descriptor symbol, hide both the function code
7296 sym and the descriptor. */
7298 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7299 struct elf_link_hash_entry *h,
7300 bfd_boolean force_local)
7302 struct ppc_link_hash_entry *eh;
7303 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7305 eh = (struct ppc_link_hash_entry *) h;
7306 if (eh->is_func_descriptor)
7308 struct ppc_link_hash_entry *fh = eh->oh;
7313 struct ppc_link_hash_table *htab;
7316 /* We aren't supposed to use alloca in BFD because on
7317 systems which do not have alloca the version in libiberty
7318 calls xmalloc, which might cause the program to crash
7319 when it runs out of memory. This function doesn't have a
7320 return status, so there's no way to gracefully return an
7321 error. So cheat. We know that string[-1] can be safely
7322 accessed; It's either a string in an ELF string table,
7323 or allocated in an objalloc structure. */
7325 p = eh->elf.root.root.string - 1;
7328 htab = ppc_hash_table (info);
7332 fh = (struct ppc_link_hash_entry *)
7333 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7336 /* Unfortunately, if it so happens that the string we were
7337 looking for was allocated immediately before this string,
7338 then we overwrote the string terminator. That's the only
7339 reason the lookup should fail. */
7342 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7343 while (q >= eh->elf.root.root.string && *q == *p)
7345 if (q < eh->elf.root.root.string && *p == '.')
7346 fh = (struct ppc_link_hash_entry *)
7347 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7356 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7361 get_sym_h (struct elf_link_hash_entry **hp,
7362 Elf_Internal_Sym **symp,
7364 unsigned char **tls_maskp,
7365 Elf_Internal_Sym **locsymsp,
7366 unsigned long r_symndx,
7369 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7371 if (r_symndx >= symtab_hdr->sh_info)
7373 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7374 struct elf_link_hash_entry *h;
7376 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7377 h = elf_follow_link (h);
7385 if (symsecp != NULL)
7387 asection *symsec = NULL;
7388 if (h->root.type == bfd_link_hash_defined
7389 || h->root.type == bfd_link_hash_defweak)
7390 symsec = h->root.u.def.section;
7394 if (tls_maskp != NULL)
7396 struct ppc_link_hash_entry *eh;
7398 eh = (struct ppc_link_hash_entry *) h;
7399 *tls_maskp = &eh->tls_mask;
7404 Elf_Internal_Sym *sym;
7405 Elf_Internal_Sym *locsyms = *locsymsp;
7407 if (locsyms == NULL)
7409 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7410 if (locsyms == NULL)
7411 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7412 symtab_hdr->sh_info,
7413 0, NULL, NULL, NULL);
7414 if (locsyms == NULL)
7416 *locsymsp = locsyms;
7418 sym = locsyms + r_symndx;
7426 if (symsecp != NULL)
7427 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7429 if (tls_maskp != NULL)
7431 struct got_entry **lgot_ents;
7432 unsigned char *tls_mask;
7435 lgot_ents = elf_local_got_ents (ibfd);
7436 if (lgot_ents != NULL)
7438 struct plt_entry **local_plt = (struct plt_entry **)
7439 (lgot_ents + symtab_hdr->sh_info);
7440 unsigned char *lgot_masks = (unsigned char *)
7441 (local_plt + symtab_hdr->sh_info);
7442 tls_mask = &lgot_masks[r_symndx];
7444 *tls_maskp = tls_mask;
7450 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7451 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7452 type suitable for optimization, and 1 otherwise. */
7455 get_tls_mask (unsigned char **tls_maskp,
7456 unsigned long *toc_symndx,
7457 bfd_vma *toc_addend,
7458 Elf_Internal_Sym **locsymsp,
7459 const Elf_Internal_Rela *rel,
7462 unsigned long r_symndx;
7464 struct elf_link_hash_entry *h;
7465 Elf_Internal_Sym *sym;
7469 r_symndx = ELF64_R_SYM (rel->r_info);
7470 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7473 if ((*tls_maskp != NULL && **tls_maskp != 0)
7475 || ppc64_elf_section_data (sec) == NULL
7476 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7479 /* Look inside a TOC section too. */
7482 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7483 off = h->root.u.def.value;
7486 off = sym->st_value;
7487 off += rel->r_addend;
7488 BFD_ASSERT (off % 8 == 0);
7489 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7490 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7491 if (toc_symndx != NULL)
7492 *toc_symndx = r_symndx;
7493 if (toc_addend != NULL)
7494 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7495 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7497 if ((h == NULL || is_static_defined (h))
7498 && (next_r == -1 || next_r == -2))
7503 /* Find (or create) an entry in the tocsave hash table. */
7505 static struct tocsave_entry *
7506 tocsave_find (struct ppc_link_hash_table *htab,
7507 enum insert_option insert,
7508 Elf_Internal_Sym **local_syms,
7509 const Elf_Internal_Rela *irela,
7512 unsigned long r_indx;
7513 struct elf_link_hash_entry *h;
7514 Elf_Internal_Sym *sym;
7515 struct tocsave_entry ent, *p;
7517 struct tocsave_entry **slot;
7519 r_indx = ELF64_R_SYM (irela->r_info);
7520 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7522 if (ent.sec == NULL || ent.sec->output_section == NULL)
7524 (*_bfd_error_handler)
7525 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7530 ent.offset = h->root.u.def.value;
7532 ent.offset = sym->st_value;
7533 ent.offset += irela->r_addend;
7535 hash = tocsave_htab_hash (&ent);
7536 slot = ((struct tocsave_entry **)
7537 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7543 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7552 /* Adjust all global syms defined in opd sections. In gcc generated
7553 code for the old ABI, these will already have been done. */
7556 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7558 struct ppc_link_hash_entry *eh;
7560 struct _opd_sec_data *opd;
7562 if (h->root.type == bfd_link_hash_indirect)
7565 if (h->root.type != bfd_link_hash_defined
7566 && h->root.type != bfd_link_hash_defweak)
7569 eh = (struct ppc_link_hash_entry *) h;
7570 if (eh->adjust_done)
7573 sym_sec = eh->elf.root.u.def.section;
7574 opd = get_opd_info (sym_sec);
7575 if (opd != NULL && opd->adjust != NULL)
7577 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7580 /* This entry has been deleted. */
7581 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7584 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7585 if (discarded_section (dsec))
7587 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7591 eh->elf.root.u.def.value = 0;
7592 eh->elf.root.u.def.section = dsec;
7595 eh->elf.root.u.def.value += adjust;
7596 eh->adjust_done = 1;
7601 /* Handles decrementing dynamic reloc counts for the reloc specified by
7602 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7603 have already been determined. */
7606 dec_dynrel_count (bfd_vma r_info,
7608 struct bfd_link_info *info,
7609 Elf_Internal_Sym **local_syms,
7610 struct elf_link_hash_entry *h,
7611 Elf_Internal_Sym *sym)
7613 enum elf_ppc64_reloc_type r_type;
7614 asection *sym_sec = NULL;
7616 /* Can this reloc be dynamic? This switch, and later tests here
7617 should be kept in sync with the code in check_relocs. */
7618 r_type = ELF64_R_TYPE (r_info);
7624 case R_PPC64_TPREL16:
7625 case R_PPC64_TPREL16_LO:
7626 case R_PPC64_TPREL16_HI:
7627 case R_PPC64_TPREL16_HA:
7628 case R_PPC64_TPREL16_DS:
7629 case R_PPC64_TPREL16_LO_DS:
7630 case R_PPC64_TPREL16_HIGH:
7631 case R_PPC64_TPREL16_HIGHA:
7632 case R_PPC64_TPREL16_HIGHER:
7633 case R_PPC64_TPREL16_HIGHERA:
7634 case R_PPC64_TPREL16_HIGHEST:
7635 case R_PPC64_TPREL16_HIGHESTA:
7636 if (!bfd_link_pic (info))
7639 case R_PPC64_TPREL64:
7640 case R_PPC64_DTPMOD64:
7641 case R_PPC64_DTPREL64:
7642 case R_PPC64_ADDR64:
7646 case R_PPC64_ADDR14:
7647 case R_PPC64_ADDR14_BRNTAKEN:
7648 case R_PPC64_ADDR14_BRTAKEN:
7649 case R_PPC64_ADDR16:
7650 case R_PPC64_ADDR16_DS:
7651 case R_PPC64_ADDR16_HA:
7652 case R_PPC64_ADDR16_HI:
7653 case R_PPC64_ADDR16_HIGH:
7654 case R_PPC64_ADDR16_HIGHA:
7655 case R_PPC64_ADDR16_HIGHER:
7656 case R_PPC64_ADDR16_HIGHERA:
7657 case R_PPC64_ADDR16_HIGHEST:
7658 case R_PPC64_ADDR16_HIGHESTA:
7659 case R_PPC64_ADDR16_LO:
7660 case R_PPC64_ADDR16_LO_DS:
7661 case R_PPC64_ADDR24:
7662 case R_PPC64_ADDR32:
7663 case R_PPC64_UADDR16:
7664 case R_PPC64_UADDR32:
7665 case R_PPC64_UADDR64:
7670 if (local_syms != NULL)
7672 unsigned long r_symndx;
7673 bfd *ibfd = sec->owner;
7675 r_symndx = ELF64_R_SYM (r_info);
7676 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7680 if ((bfd_link_pic (info)
7681 && (must_be_dyn_reloc (info, r_type)
7683 && (!SYMBOLIC_BIND (info, h)
7684 || h->root.type == bfd_link_hash_defweak
7685 || !h->def_regular))))
7686 || (ELIMINATE_COPY_RELOCS
7687 && !bfd_link_pic (info)
7689 && (h->root.type == bfd_link_hash_defweak
7690 || !h->def_regular)))
7697 struct elf_dyn_relocs *p;
7698 struct elf_dyn_relocs **pp;
7699 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7701 /* elf_gc_sweep may have already removed all dyn relocs associated
7702 with local syms for a given section. Also, symbol flags are
7703 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7704 report a dynreloc miscount. */
7705 if (*pp == NULL && info->gc_sections)
7708 while ((p = *pp) != NULL)
7712 if (!must_be_dyn_reloc (info, r_type))
7724 struct ppc_dyn_relocs *p;
7725 struct ppc_dyn_relocs **pp;
7727 bfd_boolean is_ifunc;
7729 if (local_syms == NULL)
7730 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7731 if (sym_sec == NULL)
7734 vpp = &elf_section_data (sym_sec)->local_dynrel;
7735 pp = (struct ppc_dyn_relocs **) vpp;
7737 if (*pp == NULL && info->gc_sections)
7740 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7741 while ((p = *pp) != NULL)
7743 if (p->sec == sec && p->ifunc == is_ifunc)
7754 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7756 bfd_set_error (bfd_error_bad_value);
7760 /* Remove unused Official Procedure Descriptor entries. Currently we
7761 only remove those associated with functions in discarded link-once
7762 sections, or weakly defined functions that have been overridden. It
7763 would be possible to remove many more entries for statically linked
7767 ppc64_elf_edit_opd (struct bfd_link_info *info)
7770 bfd_boolean some_edited = FALSE;
7771 asection *need_pad = NULL;
7772 struct ppc_link_hash_table *htab;
7774 htab = ppc_hash_table (info);
7778 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7781 Elf_Internal_Rela *relstart, *rel, *relend;
7782 Elf_Internal_Shdr *symtab_hdr;
7783 Elf_Internal_Sym *local_syms;
7784 struct _opd_sec_data *opd;
7785 bfd_boolean need_edit, add_aux_fields, broken;
7786 bfd_size_type cnt_16b = 0;
7788 if (!is_ppc64_elf (ibfd))
7791 sec = bfd_get_section_by_name (ibfd, ".opd");
7792 if (sec == NULL || sec->size == 0)
7795 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7798 if (sec->output_section == bfd_abs_section_ptr)
7801 /* Look through the section relocs. */
7802 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7806 symtab_hdr = &elf_symtab_hdr (ibfd);
7808 /* Read the relocations. */
7809 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7811 if (relstart == NULL)
7814 /* First run through the relocs to check they are sane, and to
7815 determine whether we need to edit this opd section. */
7819 relend = relstart + sec->reloc_count;
7820 for (rel = relstart; rel < relend; )
7822 enum elf_ppc64_reloc_type r_type;
7823 unsigned long r_symndx;
7825 struct elf_link_hash_entry *h;
7826 Elf_Internal_Sym *sym;
7829 /* .opd contains an array of 16 or 24 byte entries. We're
7830 only interested in the reloc pointing to a function entry
7832 offset = rel->r_offset;
7833 if (rel + 1 == relend
7834 || rel[1].r_offset != offset + 8)
7836 /* If someone messes with .opd alignment then after a
7837 "ld -r" we might have padding in the middle of .opd.
7838 Also, there's nothing to prevent someone putting
7839 something silly in .opd with the assembler. No .opd
7840 optimization for them! */
7842 (*_bfd_error_handler)
7843 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7848 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7849 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7851 (*_bfd_error_handler)
7852 (_("%B: unexpected reloc type %u in .opd section"),
7858 r_symndx = ELF64_R_SYM (rel->r_info);
7859 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7863 if (sym_sec == NULL || sym_sec->owner == NULL)
7865 const char *sym_name;
7867 sym_name = h->root.root.string;
7869 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7872 (*_bfd_error_handler)
7873 (_("%B: undefined sym `%s' in .opd section"),
7879 /* opd entries are always for functions defined in the
7880 current input bfd. If the symbol isn't defined in the
7881 input bfd, then we won't be using the function in this
7882 bfd; It must be defined in a linkonce section in another
7883 bfd, or is weak. It's also possible that we are
7884 discarding the function due to a linker script /DISCARD/,
7885 which we test for via the output_section. */
7886 if (sym_sec->owner != ibfd
7887 || sym_sec->output_section == bfd_abs_section_ptr)
7891 if (rel + 1 == relend
7892 || (rel + 2 < relend
7893 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7898 if (sec->size == offset + 24)
7903 if (sec->size == offset + 16)
7910 else if (rel + 1 < relend
7911 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7912 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7914 if (rel[0].r_offset == offset + 16)
7916 else if (rel[0].r_offset != offset + 24)
7923 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7925 if (!broken && (need_edit || add_aux_fields))
7927 Elf_Internal_Rela *write_rel;
7928 Elf_Internal_Shdr *rel_hdr;
7929 bfd_byte *rptr, *wptr;
7930 bfd_byte *new_contents;
7933 new_contents = NULL;
7934 amt = OPD_NDX (sec->size) * sizeof (long);
7935 opd = &ppc64_elf_section_data (sec)->u.opd;
7936 opd->adjust = bfd_zalloc (sec->owner, amt);
7937 if (opd->adjust == NULL)
7939 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7941 /* This seems a waste of time as input .opd sections are all
7942 zeros as generated by gcc, but I suppose there's no reason
7943 this will always be so. We might start putting something in
7944 the third word of .opd entries. */
7945 if ((sec->flags & SEC_IN_MEMORY) == 0)
7948 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7953 if (local_syms != NULL
7954 && symtab_hdr->contents != (unsigned char *) local_syms)
7956 if (elf_section_data (sec)->relocs != relstart)
7960 sec->contents = loc;
7961 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7964 elf_section_data (sec)->relocs = relstart;
7966 new_contents = sec->contents;
7969 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7970 if (new_contents == NULL)
7974 wptr = new_contents;
7975 rptr = sec->contents;
7976 write_rel = relstart;
7977 for (rel = relstart; rel < relend; )
7979 unsigned long r_symndx;
7981 struct elf_link_hash_entry *h;
7982 struct ppc_link_hash_entry *fdh = NULL;
7983 Elf_Internal_Sym *sym;
7985 Elf_Internal_Rela *next_rel;
7988 r_symndx = ELF64_R_SYM (rel->r_info);
7989 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7994 if (next_rel + 1 == relend
7995 || (next_rel + 2 < relend
7996 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
7999 /* See if the .opd entry is full 24 byte or
8000 16 byte (with fd_aux entry overlapped with next
8003 if (next_rel == relend)
8005 if (sec->size == rel->r_offset + 16)
8008 else if (next_rel->r_offset == rel->r_offset + 16)
8012 && h->root.root.string[0] == '.')
8014 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
8016 && fdh->elf.root.type != bfd_link_hash_defined
8017 && fdh->elf.root.type != bfd_link_hash_defweak)
8021 skip = (sym_sec->owner != ibfd
8022 || sym_sec->output_section == bfd_abs_section_ptr);
8025 if (fdh != NULL && sym_sec->owner == ibfd)
8027 /* Arrange for the function descriptor sym
8029 fdh->elf.root.u.def.value = 0;
8030 fdh->elf.root.u.def.section = sym_sec;
8032 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8034 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8039 if (!dec_dynrel_count (rel->r_info, sec, info,
8043 if (++rel == next_rel)
8046 r_symndx = ELF64_R_SYM (rel->r_info);
8047 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8054 /* We'll be keeping this opd entry. */
8059 /* Redefine the function descriptor symbol to
8060 this location in the opd section. It is
8061 necessary to update the value here rather
8062 than using an array of adjustments as we do
8063 for local symbols, because various places
8064 in the generic ELF code use the value
8065 stored in u.def.value. */
8066 fdh->elf.root.u.def.value = wptr - new_contents;
8067 fdh->adjust_done = 1;
8070 /* Local syms are a bit tricky. We could
8071 tweak them as they can be cached, but
8072 we'd need to look through the local syms
8073 for the function descriptor sym which we
8074 don't have at the moment. So keep an
8075 array of adjustments. */
8076 adjust = (wptr - new_contents) - (rptr - sec->contents);
8077 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8080 memcpy (wptr, rptr, opd_ent_size);
8081 wptr += opd_ent_size;
8082 if (add_aux_fields && opd_ent_size == 16)
8084 memset (wptr, '\0', 8);
8088 /* We need to adjust any reloc offsets to point to the
8090 for ( ; rel != next_rel; ++rel)
8092 rel->r_offset += adjust;
8093 if (write_rel != rel)
8094 memcpy (write_rel, rel, sizeof (*rel));
8099 rptr += opd_ent_size;
8102 sec->size = wptr - new_contents;
8103 sec->reloc_count = write_rel - relstart;
8106 free (sec->contents);
8107 sec->contents = new_contents;
8110 /* Fudge the header size too, as this is used later in
8111 elf_bfd_final_link if we are emitting relocs. */
8112 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8113 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8116 else if (elf_section_data (sec)->relocs != relstart)
8119 if (local_syms != NULL
8120 && symtab_hdr->contents != (unsigned char *) local_syms)
8122 if (!info->keep_memory)
8125 symtab_hdr->contents = (unsigned char *) local_syms;
8130 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8132 /* If we are doing a final link and the last .opd entry is just 16 byte
8133 long, add a 8 byte padding after it. */
8134 if (need_pad != NULL && !bfd_link_relocatable (info))
8138 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8140 BFD_ASSERT (need_pad->size > 0);
8142 p = bfd_malloc (need_pad->size + 8);
8146 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8147 p, 0, need_pad->size))
8150 need_pad->contents = p;
8151 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8155 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8159 need_pad->contents = p;
8162 memset (need_pad->contents + need_pad->size, 0, 8);
8163 need_pad->size += 8;
8169 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8172 ppc64_elf_tls_setup (struct bfd_link_info *info)
8174 struct ppc_link_hash_table *htab;
8176 htab = ppc_hash_table (info);
8180 if (abiversion (info->output_bfd) == 1)
8183 if (htab->params->no_multi_toc)
8184 htab->do_multi_toc = 0;
8185 else if (!htab->do_multi_toc)
8186 htab->params->no_multi_toc = 1;
8188 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8189 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8190 FALSE, FALSE, TRUE));
8191 /* Move dynamic linking info to the function descriptor sym. */
8192 if (htab->tls_get_addr != NULL)
8193 func_desc_adjust (&htab->tls_get_addr->elf, info);
8194 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8195 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8196 FALSE, FALSE, TRUE));
8197 if (htab->params->tls_get_addr_opt)
8199 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8201 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8202 FALSE, FALSE, TRUE);
8204 func_desc_adjust (opt, info);
8205 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8206 FALSE, FALSE, TRUE);
8208 && (opt_fd->root.type == bfd_link_hash_defined
8209 || opt_fd->root.type == bfd_link_hash_defweak))
8211 /* If glibc supports an optimized __tls_get_addr call stub,
8212 signalled by the presence of __tls_get_addr_opt, and we'll
8213 be calling __tls_get_addr via a plt call stub, then
8214 make __tls_get_addr point to __tls_get_addr_opt. */
8215 tga_fd = &htab->tls_get_addr_fd->elf;
8216 if (htab->elf.dynamic_sections_created
8218 && (tga_fd->type == STT_FUNC
8219 || tga_fd->needs_plt)
8220 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8221 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8222 && tga_fd->root.type == bfd_link_hash_undefweak)))
8224 struct plt_entry *ent;
8226 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8227 if (ent->plt.refcount > 0)
8231 tga_fd->root.type = bfd_link_hash_indirect;
8232 tga_fd->root.u.i.link = &opt_fd->root;
8233 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8234 opt_fd->forced_local = 0;
8235 if (opt_fd->dynindx != -1)
8237 /* Use __tls_get_addr_opt in dynamic relocations. */
8238 opt_fd->dynindx = -1;
8239 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8240 opt_fd->dynstr_index);
8241 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8244 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8245 tga = &htab->tls_get_addr->elf;
8246 if (opt != NULL && tga != NULL)
8248 tga->root.type = bfd_link_hash_indirect;
8249 tga->root.u.i.link = &opt->root;
8250 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8251 opt->forced_local = 0;
8252 _bfd_elf_link_hash_hide_symbol (info, opt,
8254 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8256 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8257 htab->tls_get_addr_fd->is_func_descriptor = 1;
8258 if (htab->tls_get_addr != NULL)
8260 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8261 htab->tls_get_addr->is_func = 1;
8266 else if (htab->params->tls_get_addr_opt < 0)
8267 htab->params->tls_get_addr_opt = 0;
8269 return _bfd_elf_tls_setup (info->output_bfd, info);
8272 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8276 branch_reloc_hash_match (const bfd *ibfd,
8277 const Elf_Internal_Rela *rel,
8278 const struct ppc_link_hash_entry *hash1,
8279 const struct ppc_link_hash_entry *hash2)
8281 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8282 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8283 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8285 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8287 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8288 struct elf_link_hash_entry *h;
8290 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8291 h = elf_follow_link (h);
8292 if (h == &hash1->elf || h == &hash2->elf)
8298 /* Run through all the TLS relocs looking for optimization
8299 opportunities. The linker has been hacked (see ppc64elf.em) to do
8300 a preliminary section layout so that we know the TLS segment
8301 offsets. We can't optimize earlier because some optimizations need
8302 to know the tp offset, and we need to optimize before allocating
8303 dynamic relocations. */
8306 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8310 struct ppc_link_hash_table *htab;
8311 unsigned char *toc_ref;
8314 if (!bfd_link_executable (info))
8317 htab = ppc_hash_table (info);
8321 /* Make two passes over the relocs. On the first pass, mark toc
8322 entries involved with tls relocs, and check that tls relocs
8323 involved in setting up a tls_get_addr call are indeed followed by
8324 such a call. If they are not, we can't do any tls optimization.
8325 On the second pass twiddle tls_mask flags to notify
8326 relocate_section that optimization can be done, and adjust got
8327 and plt refcounts. */
8329 for (pass = 0; pass < 2; ++pass)
8330 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8332 Elf_Internal_Sym *locsyms = NULL;
8333 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8335 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8336 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8338 Elf_Internal_Rela *relstart, *rel, *relend;
8339 bfd_boolean found_tls_get_addr_arg = 0;
8341 /* Read the relocations. */
8342 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8344 if (relstart == NULL)
8350 relend = relstart + sec->reloc_count;
8351 for (rel = relstart; rel < relend; rel++)
8353 enum elf_ppc64_reloc_type r_type;
8354 unsigned long r_symndx;
8355 struct elf_link_hash_entry *h;
8356 Elf_Internal_Sym *sym;
8358 unsigned char *tls_mask;
8359 unsigned char tls_set, tls_clear, tls_type = 0;
8361 bfd_boolean ok_tprel, is_local;
8362 long toc_ref_index = 0;
8363 int expecting_tls_get_addr = 0;
8364 bfd_boolean ret = FALSE;
8366 r_symndx = ELF64_R_SYM (rel->r_info);
8367 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8371 if (elf_section_data (sec)->relocs != relstart)
8373 if (toc_ref != NULL)
8376 && (elf_symtab_hdr (ibfd).contents
8377 != (unsigned char *) locsyms))
8384 if (h->root.type == bfd_link_hash_defined
8385 || h->root.type == bfd_link_hash_defweak)
8386 value = h->root.u.def.value;
8387 else if (h->root.type == bfd_link_hash_undefweak)
8391 found_tls_get_addr_arg = 0;
8396 /* Symbols referenced by TLS relocs must be of type
8397 STT_TLS. So no need for .opd local sym adjust. */
8398 value = sym->st_value;
8407 && h->root.type == bfd_link_hash_undefweak)
8409 else if (sym_sec != NULL
8410 && sym_sec->output_section != NULL)
8412 value += sym_sec->output_offset;
8413 value += sym_sec->output_section->vma;
8414 value -= htab->elf.tls_sec->vma;
8415 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8416 < (bfd_vma) 1 << 32);
8420 r_type = ELF64_R_TYPE (rel->r_info);
8421 /* If this section has old-style __tls_get_addr calls
8422 without marker relocs, then check that each
8423 __tls_get_addr call reloc is preceded by a reloc
8424 that conceivably belongs to the __tls_get_addr arg
8425 setup insn. If we don't find matching arg setup
8426 relocs, don't do any tls optimization. */
8428 && sec->has_tls_get_addr_call
8430 && (h == &htab->tls_get_addr->elf
8431 || h == &htab->tls_get_addr_fd->elf)
8432 && !found_tls_get_addr_arg
8433 && is_branch_reloc (r_type))
8435 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8436 "TLS optimization disabled\n"),
8437 ibfd, sec, rel->r_offset);
8442 found_tls_get_addr_arg = 0;
8445 case R_PPC64_GOT_TLSLD16:
8446 case R_PPC64_GOT_TLSLD16_LO:
8447 expecting_tls_get_addr = 1;
8448 found_tls_get_addr_arg = 1;
8451 case R_PPC64_GOT_TLSLD16_HI:
8452 case R_PPC64_GOT_TLSLD16_HA:
8453 /* These relocs should never be against a symbol
8454 defined in a shared lib. Leave them alone if
8455 that turns out to be the case. */
8462 tls_type = TLS_TLS | TLS_LD;
8465 case R_PPC64_GOT_TLSGD16:
8466 case R_PPC64_GOT_TLSGD16_LO:
8467 expecting_tls_get_addr = 1;
8468 found_tls_get_addr_arg = 1;
8471 case R_PPC64_GOT_TLSGD16_HI:
8472 case R_PPC64_GOT_TLSGD16_HA:
8478 tls_set = TLS_TLS | TLS_TPRELGD;
8480 tls_type = TLS_TLS | TLS_GD;
8483 case R_PPC64_GOT_TPREL16_DS:
8484 case R_PPC64_GOT_TPREL16_LO_DS:
8485 case R_PPC64_GOT_TPREL16_HI:
8486 case R_PPC64_GOT_TPREL16_HA:
8491 tls_clear = TLS_TPREL;
8492 tls_type = TLS_TLS | TLS_TPREL;
8499 found_tls_get_addr_arg = 1;
8504 case R_PPC64_TOC16_LO:
8505 if (sym_sec == NULL || sym_sec != toc)
8508 /* Mark this toc entry as referenced by a TLS
8509 code sequence. We can do that now in the
8510 case of R_PPC64_TLS, and after checking for
8511 tls_get_addr for the TOC16 relocs. */
8512 if (toc_ref == NULL)
8513 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8514 if (toc_ref == NULL)
8518 value = h->root.u.def.value;
8520 value = sym->st_value;
8521 value += rel->r_addend;
8524 BFD_ASSERT (value < toc->size
8525 && toc->output_offset % 8 == 0);
8526 toc_ref_index = (value + toc->output_offset) / 8;
8527 if (r_type == R_PPC64_TLS
8528 || r_type == R_PPC64_TLSGD
8529 || r_type == R_PPC64_TLSLD)
8531 toc_ref[toc_ref_index] = 1;
8535 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8540 expecting_tls_get_addr = 2;
8543 case R_PPC64_TPREL64:
8547 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8552 tls_set = TLS_EXPLICIT;
8553 tls_clear = TLS_TPREL;
8558 case R_PPC64_DTPMOD64:
8562 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8564 if (rel + 1 < relend
8566 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8567 && rel[1].r_offset == rel->r_offset + 8)
8571 tls_set = TLS_EXPLICIT | TLS_GD;
8574 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8583 tls_set = TLS_EXPLICIT;
8594 if (!expecting_tls_get_addr
8595 || !sec->has_tls_get_addr_call)
8598 if (rel + 1 < relend
8599 && branch_reloc_hash_match (ibfd, rel + 1,
8601 htab->tls_get_addr_fd))
8603 if (expecting_tls_get_addr == 2)
8605 /* Check for toc tls entries. */
8606 unsigned char *toc_tls;
8609 retval = get_tls_mask (&toc_tls, NULL, NULL,
8614 if (toc_tls != NULL)
8616 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8617 found_tls_get_addr_arg = 1;
8619 toc_ref[toc_ref_index] = 1;
8625 if (expecting_tls_get_addr != 1)
8628 /* Uh oh, we didn't find the expected call. We
8629 could just mark this symbol to exclude it
8630 from tls optimization but it's safer to skip
8631 the entire optimization. */
8632 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8633 "TLS optimization disabled\n"),
8634 ibfd, sec, rel->r_offset);
8639 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8641 struct plt_entry *ent;
8642 for (ent = htab->tls_get_addr->elf.plt.plist;
8645 if (ent->addend == 0)
8647 if (ent->plt.refcount > 0)
8649 ent->plt.refcount -= 1;
8650 expecting_tls_get_addr = 0;
8656 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8658 struct plt_entry *ent;
8659 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8662 if (ent->addend == 0)
8664 if (ent->plt.refcount > 0)
8665 ent->plt.refcount -= 1;
8673 if ((tls_set & TLS_EXPLICIT) == 0)
8675 struct got_entry *ent;
8677 /* Adjust got entry for this reloc. */
8681 ent = elf_local_got_ents (ibfd)[r_symndx];
8683 for (; ent != NULL; ent = ent->next)
8684 if (ent->addend == rel->r_addend
8685 && ent->owner == ibfd
8686 && ent->tls_type == tls_type)
8693 /* We managed to get rid of a got entry. */
8694 if (ent->got.refcount > 0)
8695 ent->got.refcount -= 1;
8700 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8701 we'll lose one or two dyn relocs. */
8702 if (!dec_dynrel_count (rel->r_info, sec, info,
8706 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8708 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8714 *tls_mask |= tls_set;
8715 *tls_mask &= ~tls_clear;
8718 if (elf_section_data (sec)->relocs != relstart)
8723 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8725 if (!info->keep_memory)
8728 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8732 if (toc_ref != NULL)
8737 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8738 the values of any global symbols in a toc section that has been
8739 edited. Globals in toc sections should be a rarity, so this function
8740 sets a flag if any are found in toc sections other than the one just
8741 edited, so that futher hash table traversals can be avoided. */
8743 struct adjust_toc_info
8746 unsigned long *skip;
8747 bfd_boolean global_toc_syms;
8750 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8753 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8755 struct ppc_link_hash_entry *eh;
8756 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8759 if (h->root.type != bfd_link_hash_defined
8760 && h->root.type != bfd_link_hash_defweak)
8763 eh = (struct ppc_link_hash_entry *) h;
8764 if (eh->adjust_done)
8767 if (eh->elf.root.u.def.section == toc_inf->toc)
8769 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8770 i = toc_inf->toc->rawsize >> 3;
8772 i = eh->elf.root.u.def.value >> 3;
8774 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8776 (*_bfd_error_handler)
8777 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8780 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8781 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8784 eh->elf.root.u.def.value -= toc_inf->skip[i];
8785 eh->adjust_done = 1;
8787 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8788 toc_inf->global_toc_syms = TRUE;
8793 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8796 ok_lo_toc_insn (unsigned int insn)
8798 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8799 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8800 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8801 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8802 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8803 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8804 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8805 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8806 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8807 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8808 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8809 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8810 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8811 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8812 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8814 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8815 && ((insn & 3) == 0 || (insn & 3) == 3))
8816 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8819 /* Examine all relocs referencing .toc sections in order to remove
8820 unused .toc entries. */
8823 ppc64_elf_edit_toc (struct bfd_link_info *info)
8826 struct adjust_toc_info toc_inf;
8827 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8829 htab->do_toc_opt = 1;
8830 toc_inf.global_toc_syms = TRUE;
8831 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8833 asection *toc, *sec;
8834 Elf_Internal_Shdr *symtab_hdr;
8835 Elf_Internal_Sym *local_syms;
8836 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8837 unsigned long *skip, *drop;
8838 unsigned char *used;
8839 unsigned char *keep, last, some_unused;
8841 if (!is_ppc64_elf (ibfd))
8844 toc = bfd_get_section_by_name (ibfd, ".toc");
8847 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8848 || discarded_section (toc))
8853 symtab_hdr = &elf_symtab_hdr (ibfd);
8855 /* Look at sections dropped from the final link. */
8858 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8860 if (sec->reloc_count == 0
8861 || !discarded_section (sec)
8862 || get_opd_info (sec)
8863 || (sec->flags & SEC_ALLOC) == 0
8864 || (sec->flags & SEC_DEBUGGING) != 0)
8867 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8868 if (relstart == NULL)
8871 /* Run through the relocs to see which toc entries might be
8873 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8875 enum elf_ppc64_reloc_type r_type;
8876 unsigned long r_symndx;
8878 struct elf_link_hash_entry *h;
8879 Elf_Internal_Sym *sym;
8882 r_type = ELF64_R_TYPE (rel->r_info);
8889 case R_PPC64_TOC16_LO:
8890 case R_PPC64_TOC16_HI:
8891 case R_PPC64_TOC16_HA:
8892 case R_PPC64_TOC16_DS:
8893 case R_PPC64_TOC16_LO_DS:
8897 r_symndx = ELF64_R_SYM (rel->r_info);
8898 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8906 val = h->root.u.def.value;
8908 val = sym->st_value;
8909 val += rel->r_addend;
8911 if (val >= toc->size)
8914 /* Anything in the toc ought to be aligned to 8 bytes.
8915 If not, don't mark as unused. */
8921 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8926 skip[val >> 3] = ref_from_discarded;
8929 if (elf_section_data (sec)->relocs != relstart)
8933 /* For largetoc loads of address constants, we can convert
8934 . addis rx,2,addr@got@ha
8935 . ld ry,addr@got@l(rx)
8937 . addis rx,2,addr@toc@ha
8938 . addi ry,rx,addr@toc@l
8939 when addr is within 2G of the toc pointer. This then means
8940 that the word storing "addr" in the toc is no longer needed. */
8942 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8943 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8944 && toc->reloc_count != 0)
8946 /* Read toc relocs. */
8947 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8949 if (toc_relocs == NULL)
8952 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8954 enum elf_ppc64_reloc_type r_type;
8955 unsigned long r_symndx;
8957 struct elf_link_hash_entry *h;
8958 Elf_Internal_Sym *sym;
8961 r_type = ELF64_R_TYPE (rel->r_info);
8962 if (r_type != R_PPC64_ADDR64)
8965 r_symndx = ELF64_R_SYM (rel->r_info);
8966 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8971 || sym_sec->output_section == NULL
8972 || discarded_section (sym_sec))
8975 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8980 if (h->type == STT_GNU_IFUNC)
8982 val = h->root.u.def.value;
8986 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8988 val = sym->st_value;
8990 val += rel->r_addend;
8991 val += sym_sec->output_section->vma + sym_sec->output_offset;
8993 /* We don't yet know the exact toc pointer value, but we
8994 know it will be somewhere in the toc section. Don't
8995 optimize if the difference from any possible toc
8996 pointer is outside [ff..f80008000, 7fff7fff]. */
8997 addr = toc->output_section->vma + TOC_BASE_OFF;
8998 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9001 addr = toc->output_section->vma + toc->output_section->rawsize;
9002 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9007 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9012 skip[rel->r_offset >> 3]
9013 |= can_optimize | ((rel - toc_relocs) << 2);
9020 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9024 if (local_syms != NULL
9025 && symtab_hdr->contents != (unsigned char *) local_syms)
9029 && elf_section_data (sec)->relocs != relstart)
9031 if (toc_relocs != NULL
9032 && elf_section_data (toc)->relocs != toc_relocs)
9039 /* Now check all kept sections that might reference the toc.
9040 Check the toc itself last. */
9041 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9044 sec = (sec == toc ? NULL
9045 : sec->next == NULL ? toc
9046 : sec->next == toc && toc->next ? toc->next
9051 if (sec->reloc_count == 0
9052 || discarded_section (sec)
9053 || get_opd_info (sec)
9054 || (sec->flags & SEC_ALLOC) == 0
9055 || (sec->flags & SEC_DEBUGGING) != 0)
9058 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9060 if (relstart == NULL)
9066 /* Mark toc entries referenced as used. */
9070 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9072 enum elf_ppc64_reloc_type r_type;
9073 unsigned long r_symndx;
9075 struct elf_link_hash_entry *h;
9076 Elf_Internal_Sym *sym;
9078 enum {no_check, check_lo, check_ha} insn_check;
9080 r_type = ELF64_R_TYPE (rel->r_info);
9084 insn_check = no_check;
9087 case R_PPC64_GOT_TLSLD16_HA:
9088 case R_PPC64_GOT_TLSGD16_HA:
9089 case R_PPC64_GOT_TPREL16_HA:
9090 case R_PPC64_GOT_DTPREL16_HA:
9091 case R_PPC64_GOT16_HA:
9092 case R_PPC64_TOC16_HA:
9093 insn_check = check_ha;
9096 case R_PPC64_GOT_TLSLD16_LO:
9097 case R_PPC64_GOT_TLSGD16_LO:
9098 case R_PPC64_GOT_TPREL16_LO_DS:
9099 case R_PPC64_GOT_DTPREL16_LO_DS:
9100 case R_PPC64_GOT16_LO:
9101 case R_PPC64_GOT16_LO_DS:
9102 case R_PPC64_TOC16_LO:
9103 case R_PPC64_TOC16_LO_DS:
9104 insn_check = check_lo;
9108 if (insn_check != no_check)
9110 bfd_vma off = rel->r_offset & ~3;
9111 unsigned char buf[4];
9114 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9119 insn = bfd_get_32 (ibfd, buf);
9120 if (insn_check == check_lo
9121 ? !ok_lo_toc_insn (insn)
9122 : ((insn & ((0x3f << 26) | 0x1f << 16))
9123 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9127 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9128 sprintf (str, "%#08x", insn);
9129 info->callbacks->einfo
9130 (_("%P: %H: toc optimization is not supported for"
9131 " %s instruction.\n"),
9132 ibfd, sec, rel->r_offset & ~3, str);
9139 case R_PPC64_TOC16_LO:
9140 case R_PPC64_TOC16_HI:
9141 case R_PPC64_TOC16_HA:
9142 case R_PPC64_TOC16_DS:
9143 case R_PPC64_TOC16_LO_DS:
9144 /* In case we're taking addresses of toc entries. */
9145 case R_PPC64_ADDR64:
9152 r_symndx = ELF64_R_SYM (rel->r_info);
9153 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9164 val = h->root.u.def.value;
9166 val = sym->st_value;
9167 val += rel->r_addend;
9169 if (val >= toc->size)
9172 if ((skip[val >> 3] & can_optimize) != 0)
9179 case R_PPC64_TOC16_HA:
9182 case R_PPC64_TOC16_LO_DS:
9183 off = rel->r_offset;
9184 off += (bfd_big_endian (ibfd) ? -2 : 3);
9185 if (!bfd_get_section_contents (ibfd, sec, &opc,
9191 if ((opc & (0x3f << 2)) == (58u << 2))
9196 /* Wrong sort of reloc, or not a ld. We may
9197 as well clear ref_from_discarded too. */
9204 /* For the toc section, we only mark as used if this
9205 entry itself isn't unused. */
9206 else if ((used[rel->r_offset >> 3]
9207 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9210 /* Do all the relocs again, to catch reference
9219 if (elf_section_data (sec)->relocs != relstart)
9223 /* Merge the used and skip arrays. Assume that TOC
9224 doublewords not appearing as either used or unused belong
9225 to to an entry more than one doubleword in size. */
9226 for (drop = skip, keep = used, last = 0, some_unused = 0;
9227 drop < skip + (toc->size + 7) / 8;
9232 *drop &= ~ref_from_discarded;
9233 if ((*drop & can_optimize) != 0)
9237 else if ((*drop & ref_from_discarded) != 0)
9240 last = ref_from_discarded;
9250 bfd_byte *contents, *src;
9252 Elf_Internal_Sym *sym;
9253 bfd_boolean local_toc_syms = FALSE;
9255 /* Shuffle the toc contents, and at the same time convert the
9256 skip array from booleans into offsets. */
9257 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9260 elf_section_data (toc)->this_hdr.contents = contents;
9262 for (src = contents, off = 0, drop = skip;
9263 src < contents + toc->size;
9266 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9271 memcpy (src - off, src, 8);
9275 toc->rawsize = toc->size;
9276 toc->size = src - contents - off;
9278 /* Adjust addends for relocs against the toc section sym,
9279 and optimize any accesses we can. */
9280 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9282 if (sec->reloc_count == 0
9283 || discarded_section (sec))
9286 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9288 if (relstart == NULL)
9291 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9293 enum elf_ppc64_reloc_type r_type;
9294 unsigned long r_symndx;
9296 struct elf_link_hash_entry *h;
9299 r_type = ELF64_R_TYPE (rel->r_info);
9306 case R_PPC64_TOC16_LO:
9307 case R_PPC64_TOC16_HI:
9308 case R_PPC64_TOC16_HA:
9309 case R_PPC64_TOC16_DS:
9310 case R_PPC64_TOC16_LO_DS:
9311 case R_PPC64_ADDR64:
9315 r_symndx = ELF64_R_SYM (rel->r_info);
9316 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9324 val = h->root.u.def.value;
9327 val = sym->st_value;
9329 local_toc_syms = TRUE;
9332 val += rel->r_addend;
9334 if (val > toc->rawsize)
9336 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9338 else if ((skip[val >> 3] & can_optimize) != 0)
9340 Elf_Internal_Rela *tocrel
9341 = toc_relocs + (skip[val >> 3] >> 2);
9342 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9346 case R_PPC64_TOC16_HA:
9347 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9350 case R_PPC64_TOC16_LO_DS:
9351 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9355 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9357 info->callbacks->einfo
9358 (_("%P: %H: %s references "
9359 "optimized away TOC entry\n"),
9360 ibfd, sec, rel->r_offset,
9361 ppc64_elf_howto_table[r_type]->name);
9362 bfd_set_error (bfd_error_bad_value);
9365 rel->r_addend = tocrel->r_addend;
9366 elf_section_data (sec)->relocs = relstart;
9370 if (h != NULL || sym->st_value != 0)
9373 rel->r_addend -= skip[val >> 3];
9374 elf_section_data (sec)->relocs = relstart;
9377 if (elf_section_data (sec)->relocs != relstart)
9381 /* We shouldn't have local or global symbols defined in the TOC,
9382 but handle them anyway. */
9383 if (local_syms != NULL)
9384 for (sym = local_syms;
9385 sym < local_syms + symtab_hdr->sh_info;
9387 if (sym->st_value != 0
9388 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9392 if (sym->st_value > toc->rawsize)
9393 i = toc->rawsize >> 3;
9395 i = sym->st_value >> 3;
9397 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9400 (*_bfd_error_handler)
9401 (_("%s defined on removed toc entry"),
9402 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9405 while ((skip[i] & (ref_from_discarded | can_optimize)));
9406 sym->st_value = (bfd_vma) i << 3;
9409 sym->st_value -= skip[i];
9410 symtab_hdr->contents = (unsigned char *) local_syms;
9413 /* Adjust any global syms defined in this toc input section. */
9414 if (toc_inf.global_toc_syms)
9417 toc_inf.skip = skip;
9418 toc_inf.global_toc_syms = FALSE;
9419 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9423 if (toc->reloc_count != 0)
9425 Elf_Internal_Shdr *rel_hdr;
9426 Elf_Internal_Rela *wrel;
9429 /* Remove unused toc relocs, and adjust those we keep. */
9430 if (toc_relocs == NULL)
9431 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9433 if (toc_relocs == NULL)
9437 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9438 if ((skip[rel->r_offset >> 3]
9439 & (ref_from_discarded | can_optimize)) == 0)
9441 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9442 wrel->r_info = rel->r_info;
9443 wrel->r_addend = rel->r_addend;
9446 else if (!dec_dynrel_count (rel->r_info, toc, info,
9447 &local_syms, NULL, NULL))
9450 elf_section_data (toc)->relocs = toc_relocs;
9451 toc->reloc_count = wrel - toc_relocs;
9452 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9453 sz = rel_hdr->sh_entsize;
9454 rel_hdr->sh_size = toc->reloc_count * sz;
9457 else if (toc_relocs != NULL
9458 && elf_section_data (toc)->relocs != toc_relocs)
9461 if (local_syms != NULL
9462 && symtab_hdr->contents != (unsigned char *) local_syms)
9464 if (!info->keep_memory)
9467 symtab_hdr->contents = (unsigned char *) local_syms;
9475 /* Return true iff input section I references the TOC using
9476 instructions limited to +/-32k offsets. */
9479 ppc64_elf_has_small_toc_reloc (asection *i)
9481 return (is_ppc64_elf (i->owner)
9482 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9485 /* Allocate space for one GOT entry. */
9488 allocate_got (struct elf_link_hash_entry *h,
9489 struct bfd_link_info *info,
9490 struct got_entry *gent)
9492 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9494 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9495 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9497 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9498 ? 2 : 1) * sizeof (Elf64_External_Rela);
9499 asection *got = ppc64_elf_tdata (gent->owner)->got;
9501 gent->got.offset = got->size;
9502 got->size += entsize;
9504 dyn = htab->elf.dynamic_sections_created;
9505 if (h->type == STT_GNU_IFUNC)
9507 htab->elf.irelplt->size += rentsize;
9508 htab->got_reli_size += rentsize;
9510 else if ((bfd_link_pic (info)
9511 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9512 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9513 || h->root.type != bfd_link_hash_undefweak))
9515 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9516 relgot->size += rentsize;
9520 /* This function merges got entries in the same toc group. */
9523 merge_got_entries (struct got_entry **pent)
9525 struct got_entry *ent, *ent2;
9527 for (ent = *pent; ent != NULL; ent = ent->next)
9528 if (!ent->is_indirect)
9529 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9530 if (!ent2->is_indirect
9531 && ent2->addend == ent->addend
9532 && ent2->tls_type == ent->tls_type
9533 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9535 ent2->is_indirect = TRUE;
9536 ent2->got.ent = ent;
9540 /* Allocate space in .plt, .got and associated reloc sections for
9544 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9546 struct bfd_link_info *info;
9547 struct ppc_link_hash_table *htab;
9549 struct ppc_link_hash_entry *eh;
9550 struct elf_dyn_relocs *p;
9551 struct got_entry **pgent, *gent;
9553 if (h->root.type == bfd_link_hash_indirect)
9556 info = (struct bfd_link_info *) inf;
9557 htab = ppc_hash_table (info);
9561 eh = (struct ppc_link_hash_entry *) h;
9562 /* Run through the TLS GD got entries first if we're changing them
9564 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9565 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9566 if (gent->got.refcount > 0
9567 && (gent->tls_type & TLS_GD) != 0)
9569 /* This was a GD entry that has been converted to TPREL. If
9570 there happens to be a TPREL entry we can use that one. */
9571 struct got_entry *ent;
9572 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9573 if (ent->got.refcount > 0
9574 && (ent->tls_type & TLS_TPREL) != 0
9575 && ent->addend == gent->addend
9576 && ent->owner == gent->owner)
9578 gent->got.refcount = 0;
9582 /* If not, then we'll be using our own TPREL entry. */
9583 if (gent->got.refcount != 0)
9584 gent->tls_type = TLS_TLS | TLS_TPREL;
9587 /* Remove any list entry that won't generate a word in the GOT before
9588 we call merge_got_entries. Otherwise we risk merging to empty
9590 pgent = &h->got.glist;
9591 while ((gent = *pgent) != NULL)
9592 if (gent->got.refcount > 0)
9594 if ((gent->tls_type & TLS_LD) != 0
9597 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9598 *pgent = gent->next;
9601 pgent = &gent->next;
9604 *pgent = gent->next;
9606 if (!htab->do_multi_toc)
9607 merge_got_entries (&h->got.glist);
9609 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9610 if (!gent->is_indirect)
9612 /* Make sure this symbol is output as a dynamic symbol.
9613 Undefined weak syms won't yet be marked as dynamic,
9614 nor will all TLS symbols. */
9615 if (h->dynindx == -1
9617 && h->type != STT_GNU_IFUNC
9618 && htab->elf.dynamic_sections_created)
9620 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9624 if (!is_ppc64_elf (gent->owner))
9627 allocate_got (h, info, gent);
9630 if (eh->dyn_relocs != NULL
9631 && (htab->elf.dynamic_sections_created
9632 || h->type == STT_GNU_IFUNC))
9634 /* In the shared -Bsymbolic case, discard space allocated for
9635 dynamic pc-relative relocs against symbols which turn out to
9636 be defined in regular objects. For the normal shared case,
9637 discard space for relocs that have become local due to symbol
9638 visibility changes. */
9640 if (bfd_link_pic (info))
9642 /* Relocs that use pc_count are those that appear on a call
9643 insn, or certain REL relocs (see must_be_dyn_reloc) that
9644 can be generated via assembly. We want calls to
9645 protected symbols to resolve directly to the function
9646 rather than going via the plt. If people want function
9647 pointer comparisons to work as expected then they should
9648 avoid writing weird assembly. */
9649 if (SYMBOL_CALLS_LOCAL (info, h))
9651 struct elf_dyn_relocs **pp;
9653 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9655 p->count -= p->pc_count;
9664 /* Also discard relocs on undefined weak syms with
9665 non-default visibility. */
9666 if (eh->dyn_relocs != NULL
9667 && h->root.type == bfd_link_hash_undefweak)
9669 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9670 eh->dyn_relocs = NULL;
9672 /* Make sure this symbol is output as a dynamic symbol.
9673 Undefined weak syms won't yet be marked as dynamic. */
9674 else if (h->dynindx == -1
9675 && !h->forced_local)
9677 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9682 else if (h->type == STT_GNU_IFUNC)
9684 if (!h->non_got_ref)
9685 eh->dyn_relocs = NULL;
9687 else if (ELIMINATE_COPY_RELOCS)
9689 /* For the non-shared case, discard space for relocs against
9690 symbols which turn out to need copy relocs or are not
9696 /* Make sure this symbol is output as a dynamic symbol.
9697 Undefined weak syms won't yet be marked as dynamic. */
9698 if (h->dynindx == -1
9699 && !h->forced_local)
9701 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9705 /* If that succeeded, we know we'll be keeping all the
9707 if (h->dynindx != -1)
9711 eh->dyn_relocs = NULL;
9716 /* Finally, allocate space. */
9717 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9719 asection *sreloc = elf_section_data (p->sec)->sreloc;
9720 if (eh->elf.type == STT_GNU_IFUNC)
9721 sreloc = htab->elf.irelplt;
9722 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9726 if ((htab->elf.dynamic_sections_created
9728 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
9729 || h->type == STT_GNU_IFUNC)
9731 struct plt_entry *pent;
9732 bfd_boolean doneone = FALSE;
9733 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9734 if (pent->plt.refcount > 0)
9736 if (!htab->elf.dynamic_sections_created
9737 || h->dynindx == -1)
9740 pent->plt.offset = s->size;
9741 s->size += PLT_ENTRY_SIZE (htab);
9742 s = htab->elf.irelplt;
9746 /* If this is the first .plt entry, make room for the special
9750 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9752 pent->plt.offset = s->size;
9754 /* Make room for this entry. */
9755 s->size += PLT_ENTRY_SIZE (htab);
9757 /* Make room for the .glink code. */
9760 s->size += GLINK_CALL_STUB_SIZE;
9763 /* We need bigger stubs past index 32767. */
9764 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9771 /* We also need to make an entry in the .rela.plt section. */
9772 s = htab->elf.srelplt;
9774 s->size += sizeof (Elf64_External_Rela);
9778 pent->plt.offset = (bfd_vma) -1;
9781 h->plt.plist = NULL;
9787 h->plt.plist = NULL;
9794 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9795 to set up space for global entry stubs. These are put in glink,
9796 after the branch table. */
9799 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9801 struct bfd_link_info *info;
9802 struct ppc_link_hash_table *htab;
9803 struct plt_entry *pent;
9806 if (h->root.type == bfd_link_hash_indirect)
9809 if (!h->pointer_equality_needed)
9816 htab = ppc_hash_table (info);
9821 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9822 if (pent->plt.offset != (bfd_vma) -1
9823 && pent->addend == 0)
9825 /* For ELFv2, if this symbol is not defined in a regular file
9826 and we are not generating a shared library or pie, then we
9827 need to define the symbol in the executable on a call stub.
9828 This is to avoid text relocations. */
9829 s->size = (s->size + 15) & -16;
9830 h->root.u.def.section = s;
9831 h->root.u.def.value = s->size;
9838 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9839 read-only sections. */
9842 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9844 if (h->root.type == bfd_link_hash_indirect)
9847 if (readonly_dynrelocs (h))
9849 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9851 /* Not an error, just cut short the traversal. */
9857 /* Set the sizes of the dynamic sections. */
9860 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9861 struct bfd_link_info *info)
9863 struct ppc_link_hash_table *htab;
9868 struct got_entry *first_tlsld;
9870 htab = ppc_hash_table (info);
9874 dynobj = htab->elf.dynobj;
9878 if (htab->elf.dynamic_sections_created)
9880 /* Set the contents of the .interp section to the interpreter. */
9881 if (bfd_link_executable (info) && !info->nointerp)
9883 s = bfd_get_linker_section (dynobj, ".interp");
9886 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9887 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9891 /* Set up .got offsets for local syms, and space for local dynamic
9893 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9895 struct got_entry **lgot_ents;
9896 struct got_entry **end_lgot_ents;
9897 struct plt_entry **local_plt;
9898 struct plt_entry **end_local_plt;
9899 unsigned char *lgot_masks;
9900 bfd_size_type locsymcount;
9901 Elf_Internal_Shdr *symtab_hdr;
9903 if (!is_ppc64_elf (ibfd))
9906 for (s = ibfd->sections; s != NULL; s = s->next)
9908 struct ppc_dyn_relocs *p;
9910 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9912 if (!bfd_is_abs_section (p->sec)
9913 && bfd_is_abs_section (p->sec->output_section))
9915 /* Input section has been discarded, either because
9916 it is a copy of a linkonce section or due to
9917 linker script /DISCARD/, so we'll be discarding
9920 else if (p->count != 0)
9922 asection *srel = elf_section_data (p->sec)->sreloc;
9924 srel = htab->elf.irelplt;
9925 srel->size += p->count * sizeof (Elf64_External_Rela);
9926 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9927 info->flags |= DF_TEXTREL;
9932 lgot_ents = elf_local_got_ents (ibfd);
9936 symtab_hdr = &elf_symtab_hdr (ibfd);
9937 locsymcount = symtab_hdr->sh_info;
9938 end_lgot_ents = lgot_ents + locsymcount;
9939 local_plt = (struct plt_entry **) end_lgot_ents;
9940 end_local_plt = local_plt + locsymcount;
9941 lgot_masks = (unsigned char *) end_local_plt;
9942 s = ppc64_elf_tdata (ibfd)->got;
9943 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9945 struct got_entry **pent, *ent;
9948 while ((ent = *pent) != NULL)
9949 if (ent->got.refcount > 0)
9951 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9953 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9958 unsigned int ent_size = 8;
9959 unsigned int rel_size = sizeof (Elf64_External_Rela);
9961 ent->got.offset = s->size;
9962 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9967 s->size += ent_size;
9968 if ((*lgot_masks & PLT_IFUNC) != 0)
9970 htab->elf.irelplt->size += rel_size;
9971 htab->got_reli_size += rel_size;
9973 else if (bfd_link_pic (info))
9975 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9976 srel->size += rel_size;
9985 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9986 for (; local_plt < end_local_plt; ++local_plt)
9988 struct plt_entry *ent;
9990 for (ent = *local_plt; ent != NULL; ent = ent->next)
9991 if (ent->plt.refcount > 0)
9994 ent->plt.offset = s->size;
9995 s->size += PLT_ENTRY_SIZE (htab);
9997 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10000 ent->plt.offset = (bfd_vma) -1;
10004 /* Allocate global sym .plt and .got entries, and space for global
10005 sym dynamic relocs. */
10006 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10007 /* Stash the end of glink branch table. */
10008 if (htab->glink != NULL)
10009 htab->glink->rawsize = htab->glink->size;
10011 if (!htab->opd_abi && !bfd_link_pic (info))
10012 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10014 first_tlsld = NULL;
10015 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10017 struct got_entry *ent;
10019 if (!is_ppc64_elf (ibfd))
10022 ent = ppc64_tlsld_got (ibfd);
10023 if (ent->got.refcount > 0)
10025 if (!htab->do_multi_toc && first_tlsld != NULL)
10027 ent->is_indirect = TRUE;
10028 ent->got.ent = first_tlsld;
10032 if (first_tlsld == NULL)
10034 s = ppc64_elf_tdata (ibfd)->got;
10035 ent->got.offset = s->size;
10038 if (bfd_link_pic (info))
10040 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10041 srel->size += sizeof (Elf64_External_Rela);
10046 ent->got.offset = (bfd_vma) -1;
10049 /* We now have determined the sizes of the various dynamic sections.
10050 Allocate memory for them. */
10052 for (s = dynobj->sections; s != NULL; s = s->next)
10054 if ((s->flags & SEC_LINKER_CREATED) == 0)
10057 if (s == htab->brlt || s == htab->relbrlt)
10058 /* These haven't been allocated yet; don't strip. */
10060 else if (s == htab->elf.sgot
10061 || s == htab->elf.splt
10062 || s == htab->elf.iplt
10063 || s == htab->glink
10064 || s == htab->dynbss)
10066 /* Strip this section if we don't need it; see the
10069 else if (s == htab->glink_eh_frame)
10071 if (!bfd_is_abs_section (s->output_section))
10072 /* Not sized yet. */
10075 else if (CONST_STRNEQ (s->name, ".rela"))
10079 if (s != htab->elf.srelplt)
10082 /* We use the reloc_count field as a counter if we need
10083 to copy relocs into the output file. */
10084 s->reloc_count = 0;
10089 /* It's not one of our sections, so don't allocate space. */
10095 /* If we don't need this section, strip it from the
10096 output file. This is mostly to handle .rela.bss and
10097 .rela.plt. We must create both sections in
10098 create_dynamic_sections, because they must be created
10099 before the linker maps input sections to output
10100 sections. The linker does that before
10101 adjust_dynamic_symbol is called, and it is that
10102 function which decides whether anything needs to go
10103 into these sections. */
10104 s->flags |= SEC_EXCLUDE;
10108 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10111 /* Allocate memory for the section contents. We use bfd_zalloc
10112 here in case unused entries are not reclaimed before the
10113 section's contents are written out. This should not happen,
10114 but this way if it does we get a R_PPC64_NONE reloc in .rela
10115 sections instead of garbage.
10116 We also rely on the section contents being zero when writing
10118 s->contents = bfd_zalloc (dynobj, s->size);
10119 if (s->contents == NULL)
10123 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10125 if (!is_ppc64_elf (ibfd))
10128 s = ppc64_elf_tdata (ibfd)->got;
10129 if (s != NULL && s != htab->elf.sgot)
10132 s->flags |= SEC_EXCLUDE;
10135 s->contents = bfd_zalloc (ibfd, s->size);
10136 if (s->contents == NULL)
10140 s = ppc64_elf_tdata (ibfd)->relgot;
10144 s->flags |= SEC_EXCLUDE;
10147 s->contents = bfd_zalloc (ibfd, s->size);
10148 if (s->contents == NULL)
10151 s->reloc_count = 0;
10156 if (htab->elf.dynamic_sections_created)
10158 bfd_boolean tls_opt;
10160 /* Add some entries to the .dynamic section. We fill in the
10161 values later, in ppc64_elf_finish_dynamic_sections, but we
10162 must add the entries now so that we get the correct size for
10163 the .dynamic section. The DT_DEBUG entry is filled in by the
10164 dynamic linker and used by the debugger. */
10165 #define add_dynamic_entry(TAG, VAL) \
10166 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10168 if (bfd_link_executable (info))
10170 if (!add_dynamic_entry (DT_DEBUG, 0))
10174 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10176 if (!add_dynamic_entry (DT_PLTGOT, 0)
10177 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10178 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10179 || !add_dynamic_entry (DT_JMPREL, 0)
10180 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10184 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10186 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10187 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10191 tls_opt = (htab->params->tls_get_addr_opt
10192 && htab->tls_get_addr_fd != NULL
10193 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10194 if (tls_opt || !htab->opd_abi)
10196 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10202 if (!add_dynamic_entry (DT_RELA, 0)
10203 || !add_dynamic_entry (DT_RELASZ, 0)
10204 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10207 /* If any dynamic relocs apply to a read-only section,
10208 then we need a DT_TEXTREL entry. */
10209 if ((info->flags & DF_TEXTREL) == 0)
10210 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10212 if ((info->flags & DF_TEXTREL) != 0)
10214 if (!add_dynamic_entry (DT_TEXTREL, 0))
10219 #undef add_dynamic_entry
10224 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10227 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10229 if (h->plt.plist != NULL
10231 && !h->pointer_equality_needed)
10234 return _bfd_elf_hash_symbol (h);
10237 /* Determine the type of stub needed, if any, for a call. */
10239 static inline enum ppc_stub_type
10240 ppc_type_of_stub (asection *input_sec,
10241 const Elf_Internal_Rela *rel,
10242 struct ppc_link_hash_entry **hash,
10243 struct plt_entry **plt_ent,
10244 bfd_vma destination,
10245 unsigned long local_off)
10247 struct ppc_link_hash_entry *h = *hash;
10249 bfd_vma branch_offset;
10250 bfd_vma max_branch_offset;
10251 enum elf_ppc64_reloc_type r_type;
10255 struct plt_entry *ent;
10256 struct ppc_link_hash_entry *fdh = h;
10258 && h->oh->is_func_descriptor)
10260 fdh = ppc_follow_link (h->oh);
10264 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10265 if (ent->addend == rel->r_addend
10266 && ent->plt.offset != (bfd_vma) -1)
10269 return ppc_stub_plt_call;
10272 /* Here, we know we don't have a plt entry. If we don't have a
10273 either a defined function descriptor or a defined entry symbol
10274 in a regular object file, then it is pointless trying to make
10275 any other type of stub. */
10276 if (!is_static_defined (&fdh->elf)
10277 && !is_static_defined (&h->elf))
10278 return ppc_stub_none;
10280 else if (elf_local_got_ents (input_sec->owner) != NULL)
10282 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10283 struct plt_entry **local_plt = (struct plt_entry **)
10284 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10285 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10287 if (local_plt[r_symndx] != NULL)
10289 struct plt_entry *ent;
10291 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10292 if (ent->addend == rel->r_addend
10293 && ent->plt.offset != (bfd_vma) -1)
10296 return ppc_stub_plt_call;
10301 /* Determine where the call point is. */
10302 location = (input_sec->output_offset
10303 + input_sec->output_section->vma
10306 branch_offset = destination - location;
10307 r_type = ELF64_R_TYPE (rel->r_info);
10309 /* Determine if a long branch stub is needed. */
10310 max_branch_offset = 1 << 25;
10311 if (r_type != R_PPC64_REL24)
10312 max_branch_offset = 1 << 15;
10314 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10315 /* We need a stub. Figure out whether a long_branch or plt_branch
10316 is needed later. */
10317 return ppc_stub_long_branch;
10319 return ppc_stub_none;
10322 /* With power7 weakly ordered memory model, it is possible for ld.so
10323 to update a plt entry in one thread and have another thread see a
10324 stale zero toc entry. To avoid this we need some sort of acquire
10325 barrier in the call stub. One solution is to make the load of the
10326 toc word seem to appear to depend on the load of the function entry
10327 word. Another solution is to test for r2 being zero, and branch to
10328 the appropriate glink entry if so.
10330 . fake dep barrier compare
10331 . ld 12,xxx(2) ld 12,xxx(2)
10332 . mtctr 12 mtctr 12
10333 . xor 11,12,12 ld 2,xxx+8(2)
10334 . add 2,2,11 cmpldi 2,0
10335 . ld 2,xxx+8(2) bnectr+
10336 . bctr b <glink_entry>
10338 The solution involving the compare turns out to be faster, so
10339 that's what we use unless the branch won't reach. */
10341 #define ALWAYS_USE_FAKE_DEP 0
10342 #define ALWAYS_EMIT_R2SAVE 0
10344 #define PPC_LO(v) ((v) & 0xffff)
10345 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10346 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10348 static inline unsigned int
10349 plt_stub_size (struct ppc_link_hash_table *htab,
10350 struct ppc_stub_hash_entry *stub_entry,
10353 unsigned size = 12;
10355 if (ALWAYS_EMIT_R2SAVE
10356 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10358 if (PPC_HA (off) != 0)
10363 if (htab->params->plt_static_chain)
10365 if (htab->params->plt_thread_safe
10366 && htab->elf.dynamic_sections_created
10367 && stub_entry->h != NULL
10368 && stub_entry->h->elf.dynindx != -1)
10370 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10373 if (stub_entry->h != NULL
10374 && (stub_entry->h == htab->tls_get_addr_fd
10375 || stub_entry->h == htab->tls_get_addr)
10376 && htab->params->tls_get_addr_opt)
10381 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10382 then return the padding needed to do so. */
10383 static inline unsigned int
10384 plt_stub_pad (struct ppc_link_hash_table *htab,
10385 struct ppc_stub_hash_entry *stub_entry,
10388 int stub_align = 1 << htab->params->plt_stub_align;
10389 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10390 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10392 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10393 > ((stub_size - 1) & -stub_align))
10394 return stub_align - (stub_off & (stub_align - 1));
10398 /* Build a .plt call stub. */
10400 static inline bfd_byte *
10401 build_plt_stub (struct ppc_link_hash_table *htab,
10402 struct ppc_stub_hash_entry *stub_entry,
10403 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10405 bfd *obfd = htab->params->stub_bfd;
10406 bfd_boolean plt_load_toc = htab->opd_abi;
10407 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10408 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10409 && htab->elf.dynamic_sections_created
10410 && stub_entry->h != NULL
10411 && stub_entry->h->elf.dynindx != -1);
10412 bfd_boolean use_fake_dep = plt_thread_safe;
10413 bfd_vma cmp_branch_off = 0;
10415 if (!ALWAYS_USE_FAKE_DEP
10418 && !((stub_entry->h == htab->tls_get_addr_fd
10419 || stub_entry->h == htab->tls_get_addr)
10420 && htab->params->tls_get_addr_opt))
10422 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10423 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10424 / PLT_ENTRY_SIZE (htab));
10425 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10428 if (pltindex > 32768)
10429 glinkoff += (pltindex - 32768) * 4;
10431 + htab->glink->output_offset
10432 + htab->glink->output_section->vma);
10433 from = (p - stub_entry->group->stub_sec->contents
10434 + 4 * (ALWAYS_EMIT_R2SAVE
10435 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10436 + 4 * (PPC_HA (offset) != 0)
10437 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10438 != PPC_HA (offset))
10439 + 4 * (plt_static_chain != 0)
10441 + stub_entry->group->stub_sec->output_offset
10442 + stub_entry->group->stub_sec->output_section->vma);
10443 cmp_branch_off = to - from;
10444 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10447 if (PPC_HA (offset) != 0)
10451 if (ALWAYS_EMIT_R2SAVE
10452 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10453 r[0].r_offset += 4;
10454 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10455 r[1].r_offset = r[0].r_offset + 4;
10456 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10457 r[1].r_addend = r[0].r_addend;
10460 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10462 r[2].r_offset = r[1].r_offset + 4;
10463 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10464 r[2].r_addend = r[0].r_addend;
10468 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10469 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10470 r[2].r_addend = r[0].r_addend + 8;
10471 if (plt_static_chain)
10473 r[3].r_offset = r[2].r_offset + 4;
10474 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10475 r[3].r_addend = r[0].r_addend + 16;
10480 if (ALWAYS_EMIT_R2SAVE
10481 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10482 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10485 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10486 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10490 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10491 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10494 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10496 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10499 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10504 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10505 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10507 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10508 if (plt_static_chain)
10509 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10516 if (ALWAYS_EMIT_R2SAVE
10517 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10518 r[0].r_offset += 4;
10519 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10522 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10524 r[1].r_offset = r[0].r_offset + 4;
10525 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10526 r[1].r_addend = r[0].r_addend;
10530 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10531 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10532 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10533 if (plt_static_chain)
10535 r[2].r_offset = r[1].r_offset + 4;
10536 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10537 r[2].r_addend = r[0].r_addend + 8;
10542 if (ALWAYS_EMIT_R2SAVE
10543 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10544 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10545 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10547 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10549 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10552 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10557 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10558 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10560 if (plt_static_chain)
10561 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10562 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10565 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10567 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10568 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10569 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10572 bfd_put_32 (obfd, BCTR, p), p += 4;
10576 /* Build a special .plt call stub for __tls_get_addr. */
10578 #define LD_R11_0R3 0xe9630000
10579 #define LD_R12_0R3 0xe9830000
10580 #define MR_R0_R3 0x7c601b78
10581 #define CMPDI_R11_0 0x2c2b0000
10582 #define ADD_R3_R12_R13 0x7c6c6a14
10583 #define BEQLR 0x4d820020
10584 #define MR_R3_R0 0x7c030378
10585 #define STD_R11_0R1 0xf9610000
10586 #define BCTRL 0x4e800421
10587 #define LD_R11_0R1 0xe9610000
10588 #define MTLR_R11 0x7d6803a6
10590 static inline bfd_byte *
10591 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10592 struct ppc_stub_hash_entry *stub_entry,
10593 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10595 bfd *obfd = htab->params->stub_bfd;
10597 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10598 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10599 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10600 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10601 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10602 bfd_put_32 (obfd, BEQLR, p), p += 4;
10603 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10604 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10605 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10608 r[0].r_offset += 9 * 4;
10609 p = build_plt_stub (htab, stub_entry, p, offset, r);
10610 bfd_put_32 (obfd, BCTRL, p - 4);
10612 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10613 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10614 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10615 bfd_put_32 (obfd, BLR, p), p += 4;
10620 static Elf_Internal_Rela *
10621 get_relocs (asection *sec, int count)
10623 Elf_Internal_Rela *relocs;
10624 struct bfd_elf_section_data *elfsec_data;
10626 elfsec_data = elf_section_data (sec);
10627 relocs = elfsec_data->relocs;
10628 if (relocs == NULL)
10630 bfd_size_type relsize;
10631 relsize = sec->reloc_count * sizeof (*relocs);
10632 relocs = bfd_alloc (sec->owner, relsize);
10633 if (relocs == NULL)
10635 elfsec_data->relocs = relocs;
10636 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10637 sizeof (Elf_Internal_Shdr));
10638 if (elfsec_data->rela.hdr == NULL)
10640 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10641 * sizeof (Elf64_External_Rela));
10642 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10643 sec->reloc_count = 0;
10645 relocs += sec->reloc_count;
10646 sec->reloc_count += count;
10651 get_r2off (struct bfd_link_info *info,
10652 struct ppc_stub_hash_entry *stub_entry)
10654 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10655 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10659 /* Support linking -R objects. Get the toc pointer from the
10662 if (!htab->opd_abi)
10664 asection *opd = stub_entry->h->elf.root.u.def.section;
10665 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10667 if (strcmp (opd->name, ".opd") != 0
10668 || opd->reloc_count != 0)
10670 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10671 stub_entry->h->elf.root.root.string);
10672 bfd_set_error (bfd_error_bad_value);
10673 return (bfd_vma) -1;
10675 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10676 return (bfd_vma) -1;
10677 r2off = bfd_get_64 (opd->owner, buf);
10678 r2off -= elf_gp (info->output_bfd);
10680 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10685 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10687 struct ppc_stub_hash_entry *stub_entry;
10688 struct ppc_branch_hash_entry *br_entry;
10689 struct bfd_link_info *info;
10690 struct ppc_link_hash_table *htab;
10695 Elf_Internal_Rela *r;
10698 /* Massage our args to the form they really have. */
10699 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10702 htab = ppc_hash_table (info);
10706 /* Make a note of the offset within the stubs for this entry. */
10707 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10708 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10710 htab->stub_count[stub_entry->stub_type - 1] += 1;
10711 switch (stub_entry->stub_type)
10713 case ppc_stub_long_branch:
10714 case ppc_stub_long_branch_r2off:
10715 /* Branches are relative. This is where we are going to. */
10716 dest = (stub_entry->target_value
10717 + stub_entry->target_section->output_offset
10718 + stub_entry->target_section->output_section->vma);
10719 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10722 /* And this is where we are coming from. */
10723 off -= (stub_entry->stub_offset
10724 + stub_entry->group->stub_sec->output_offset
10725 + stub_entry->group->stub_sec->output_section->vma);
10728 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10730 bfd_vma r2off = get_r2off (info, stub_entry);
10732 if (r2off == (bfd_vma) -1)
10734 htab->stub_error = TRUE;
10737 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10740 if (PPC_HA (r2off) != 0)
10742 bfd_put_32 (htab->params->stub_bfd,
10743 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10747 if (PPC_LO (r2off) != 0)
10749 bfd_put_32 (htab->params->stub_bfd,
10750 ADDI_R2_R2 | PPC_LO (r2off), loc);
10756 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10758 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10760 info->callbacks->einfo
10761 (_("%P: long branch stub `%s' offset overflow\n"),
10762 stub_entry->root.string);
10763 htab->stub_error = TRUE;
10767 if (info->emitrelocations)
10769 r = get_relocs (stub_entry->group->stub_sec, 1);
10772 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10773 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10774 r->r_addend = dest;
10775 if (stub_entry->h != NULL)
10777 struct elf_link_hash_entry **hashes;
10778 unsigned long symndx;
10779 struct ppc_link_hash_entry *h;
10781 hashes = elf_sym_hashes (htab->params->stub_bfd);
10782 if (hashes == NULL)
10784 bfd_size_type hsize;
10786 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10787 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10788 if (hashes == NULL)
10790 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10791 htab->stub_globals = 1;
10793 symndx = htab->stub_globals++;
10795 hashes[symndx] = &h->elf;
10796 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10797 if (h->oh != NULL && h->oh->is_func)
10798 h = ppc_follow_link (h->oh);
10799 if (h->elf.root.u.def.section != stub_entry->target_section)
10800 /* H is an opd symbol. The addend must be zero. */
10804 off = (h->elf.root.u.def.value
10805 + h->elf.root.u.def.section->output_offset
10806 + h->elf.root.u.def.section->output_section->vma);
10807 r->r_addend -= off;
10813 case ppc_stub_plt_branch:
10814 case ppc_stub_plt_branch_r2off:
10815 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10816 stub_entry->root.string + 9,
10818 if (br_entry == NULL)
10820 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10821 stub_entry->root.string);
10822 htab->stub_error = TRUE;
10826 dest = (stub_entry->target_value
10827 + stub_entry->target_section->output_offset
10828 + stub_entry->target_section->output_section->vma);
10829 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10830 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10832 bfd_put_64 (htab->brlt->owner, dest,
10833 htab->brlt->contents + br_entry->offset);
10835 if (br_entry->iter == htab->stub_iteration)
10837 br_entry->iter = 0;
10839 if (htab->relbrlt != NULL)
10841 /* Create a reloc for the branch lookup table entry. */
10842 Elf_Internal_Rela rela;
10845 rela.r_offset = (br_entry->offset
10846 + htab->brlt->output_offset
10847 + htab->brlt->output_section->vma);
10848 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10849 rela.r_addend = dest;
10851 rl = htab->relbrlt->contents;
10852 rl += (htab->relbrlt->reloc_count++
10853 * sizeof (Elf64_External_Rela));
10854 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10856 else if (info->emitrelocations)
10858 r = get_relocs (htab->brlt, 1);
10861 /* brlt, being SEC_LINKER_CREATED does not go through the
10862 normal reloc processing. Symbols and offsets are not
10863 translated from input file to output file form, so
10864 set up the offset per the output file. */
10865 r->r_offset = (br_entry->offset
10866 + htab->brlt->output_offset
10867 + htab->brlt->output_section->vma);
10868 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10869 r->r_addend = dest;
10873 dest = (br_entry->offset
10874 + htab->brlt->output_offset
10875 + htab->brlt->output_section->vma);
10878 - elf_gp (htab->brlt->output_section->owner)
10879 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
10881 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10883 info->callbacks->einfo
10884 (_("%P: linkage table error against `%T'\n"),
10885 stub_entry->root.string);
10886 bfd_set_error (bfd_error_bad_value);
10887 htab->stub_error = TRUE;
10891 if (info->emitrelocations)
10893 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
10896 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
10897 if (bfd_big_endian (info->output_bfd))
10898 r[0].r_offset += 2;
10899 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10900 r[0].r_offset += 4;
10901 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10902 r[0].r_addend = dest;
10903 if (PPC_HA (off) != 0)
10905 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10906 r[1].r_offset = r[0].r_offset + 4;
10907 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10908 r[1].r_addend = r[0].r_addend;
10912 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10914 if (PPC_HA (off) != 0)
10917 bfd_put_32 (htab->params->stub_bfd,
10918 ADDIS_R12_R2 | PPC_HA (off), loc);
10920 bfd_put_32 (htab->params->stub_bfd,
10921 LD_R12_0R12 | PPC_LO (off), loc);
10926 bfd_put_32 (htab->params->stub_bfd,
10927 LD_R12_0R2 | PPC_LO (off), loc);
10932 bfd_vma r2off = get_r2off (info, stub_entry);
10934 if (r2off == (bfd_vma) -1)
10936 htab->stub_error = TRUE;
10940 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10943 if (PPC_HA (off) != 0)
10946 bfd_put_32 (htab->params->stub_bfd,
10947 ADDIS_R12_R2 | PPC_HA (off), loc);
10949 bfd_put_32 (htab->params->stub_bfd,
10950 LD_R12_0R12 | PPC_LO (off), loc);
10953 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10955 if (PPC_HA (r2off) != 0)
10959 bfd_put_32 (htab->params->stub_bfd,
10960 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10962 if (PPC_LO (r2off) != 0)
10966 bfd_put_32 (htab->params->stub_bfd,
10967 ADDI_R2_R2 | PPC_LO (r2off), loc);
10971 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10973 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10976 case ppc_stub_plt_call:
10977 case ppc_stub_plt_call_r2save:
10978 if (stub_entry->h != NULL
10979 && stub_entry->h->is_func_descriptor
10980 && stub_entry->h->oh != NULL)
10982 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10984 /* If the old-ABI "dot-symbol" is undefined make it weak so
10985 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
10986 if (fh->elf.root.type == bfd_link_hash_undefined)
10987 fh->elf.root.type = bfd_link_hash_undefweak;
10988 /* Stop undo_symbol_twiddle changing it back to undefined. */
10989 fh->was_undefined = 0;
10992 /* Now build the stub. */
10993 dest = stub_entry->plt_ent->plt.offset & ~1;
10994 if (dest >= (bfd_vma) -2)
10997 plt = htab->elf.splt;
10998 if (!htab->elf.dynamic_sections_created
10999 || stub_entry->h == NULL
11000 || stub_entry->h->elf.dynindx == -1)
11001 plt = htab->elf.iplt;
11003 dest += plt->output_offset + plt->output_section->vma;
11005 if (stub_entry->h == NULL
11006 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11008 Elf_Internal_Rela rela;
11011 rela.r_offset = dest;
11013 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11015 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11016 rela.r_addend = (stub_entry->target_value
11017 + stub_entry->target_section->output_offset
11018 + stub_entry->target_section->output_section->vma);
11020 rl = (htab->elf.irelplt->contents
11021 + (htab->elf.irelplt->reloc_count++
11022 * sizeof (Elf64_External_Rela)));
11023 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11024 stub_entry->plt_ent->plt.offset |= 1;
11028 - elf_gp (plt->output_section->owner)
11029 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11031 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11033 info->callbacks->einfo
11034 (_("%P: linkage table error against `%T'\n"),
11035 stub_entry->h != NULL
11036 ? stub_entry->h->elf.root.root.string
11038 bfd_set_error (bfd_error_bad_value);
11039 htab->stub_error = TRUE;
11043 if (htab->params->plt_stub_align != 0)
11045 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11047 stub_entry->group->stub_sec->size += pad;
11048 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11053 if (info->emitrelocations)
11055 r = get_relocs (stub_entry->group->stub_sec,
11056 ((PPC_HA (off) != 0)
11058 ? 2 + (htab->params->plt_static_chain
11059 && PPC_HA (off + 16) == PPC_HA (off))
11063 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11064 if (bfd_big_endian (info->output_bfd))
11065 r[0].r_offset += 2;
11066 r[0].r_addend = dest;
11068 if (stub_entry->h != NULL
11069 && (stub_entry->h == htab->tls_get_addr_fd
11070 || stub_entry->h == htab->tls_get_addr)
11071 && htab->params->tls_get_addr_opt)
11072 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11074 p = build_plt_stub (htab, stub_entry, loc, off, r);
11078 case ppc_stub_save_res:
11086 stub_entry->group->stub_sec->size += size;
11088 if (htab->params->emit_stub_syms)
11090 struct elf_link_hash_entry *h;
11093 const char *const stub_str[] = { "long_branch",
11094 "long_branch_r2off",
11096 "plt_branch_r2off",
11100 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11101 len2 = strlen (stub_entry->root.string);
11102 name = bfd_malloc (len1 + len2 + 2);
11105 memcpy (name, stub_entry->root.string, 9);
11106 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11107 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11108 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11111 if (h->root.type == bfd_link_hash_new)
11113 h->root.type = bfd_link_hash_defined;
11114 h->root.u.def.section = stub_entry->group->stub_sec;
11115 h->root.u.def.value = stub_entry->stub_offset;
11116 h->ref_regular = 1;
11117 h->def_regular = 1;
11118 h->ref_regular_nonweak = 1;
11119 h->forced_local = 1;
11121 h->root.linker_def = 1;
11128 /* As above, but don't actually build the stub. Just bump offset so
11129 we know stub section sizes, and select plt_branch stubs where
11130 long_branch stubs won't do. */
11133 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11135 struct ppc_stub_hash_entry *stub_entry;
11136 struct bfd_link_info *info;
11137 struct ppc_link_hash_table *htab;
11141 /* Massage our args to the form they really have. */
11142 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11145 htab = ppc_hash_table (info);
11149 if (stub_entry->h != NULL
11150 && stub_entry->h->save_res
11151 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11152 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11154 /* Don't make stubs to out-of-line register save/restore
11155 functions. Instead, emit copies of the functions. */
11156 stub_entry->group->needs_save_res = 1;
11157 stub_entry->stub_type = ppc_stub_save_res;
11161 if (stub_entry->stub_type == ppc_stub_plt_call
11162 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11165 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11166 if (off >= (bfd_vma) -2)
11168 plt = htab->elf.splt;
11169 if (!htab->elf.dynamic_sections_created
11170 || stub_entry->h == NULL
11171 || stub_entry->h->elf.dynindx == -1)
11172 plt = htab->elf.iplt;
11173 off += (plt->output_offset
11174 + plt->output_section->vma
11175 - elf_gp (plt->output_section->owner)
11176 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11178 size = plt_stub_size (htab, stub_entry, off);
11179 if (htab->params->plt_stub_align)
11180 size += plt_stub_pad (htab, stub_entry, off);
11181 if (info->emitrelocations)
11183 stub_entry->group->stub_sec->reloc_count
11184 += ((PPC_HA (off) != 0)
11186 ? 2 + (htab->params->plt_static_chain
11187 && PPC_HA (off + 16) == PPC_HA (off))
11189 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11194 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11197 bfd_vma local_off = 0;
11199 off = (stub_entry->target_value
11200 + stub_entry->target_section->output_offset
11201 + stub_entry->target_section->output_section->vma);
11202 off -= (stub_entry->group->stub_sec->size
11203 + stub_entry->group->stub_sec->output_offset
11204 + stub_entry->group->stub_sec->output_section->vma);
11206 /* Reset the stub type from the plt variant in case we now
11207 can reach with a shorter stub. */
11208 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11209 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11212 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11214 r2off = get_r2off (info, stub_entry);
11215 if (r2off == (bfd_vma) -1)
11217 htab->stub_error = TRUE;
11221 if (PPC_HA (r2off) != 0)
11223 if (PPC_LO (r2off) != 0)
11228 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11230 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11231 Do the same for -R objects without function descriptors. */
11232 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11233 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11235 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11237 struct ppc_branch_hash_entry *br_entry;
11239 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11240 stub_entry->root.string + 9,
11242 if (br_entry == NULL)
11244 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11245 stub_entry->root.string);
11246 htab->stub_error = TRUE;
11250 if (br_entry->iter != htab->stub_iteration)
11252 br_entry->iter = htab->stub_iteration;
11253 br_entry->offset = htab->brlt->size;
11254 htab->brlt->size += 8;
11256 if (htab->relbrlt != NULL)
11257 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11258 else if (info->emitrelocations)
11260 htab->brlt->reloc_count += 1;
11261 htab->brlt->flags |= SEC_RELOC;
11265 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11266 off = (br_entry->offset
11267 + htab->brlt->output_offset
11268 + htab->brlt->output_section->vma
11269 - elf_gp (htab->brlt->output_section->owner)
11270 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11272 if (info->emitrelocations)
11274 stub_entry->group->stub_sec->reloc_count
11275 += 1 + (PPC_HA (off) != 0);
11276 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11279 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11282 if (PPC_HA (off) != 0)
11288 if (PPC_HA (off) != 0)
11291 if (PPC_HA (r2off) != 0)
11293 if (PPC_LO (r2off) != 0)
11297 else if (info->emitrelocations)
11299 stub_entry->group->stub_sec->reloc_count += 1;
11300 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11304 stub_entry->group->stub_sec->size += size;
11308 /* Set up various things so that we can make a list of input sections
11309 for each output section included in the link. Returns -1 on error,
11310 0 when no stubs will be needed, and 1 on success. */
11313 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11317 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11322 htab->sec_info_arr_size = bfd_get_next_section_id ();
11323 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11324 htab->sec_info = bfd_zmalloc (amt);
11325 if (htab->sec_info == NULL)
11328 /* Set toc_off for com, und, abs and ind sections. */
11329 for (id = 0; id < 3; id++)
11330 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11335 /* Set up for first pass at multitoc partitioning. */
11338 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11340 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11342 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11343 htab->toc_bfd = NULL;
11344 htab->toc_first_sec = NULL;
11347 /* The linker repeatedly calls this function for each TOC input section
11348 and linker generated GOT section. Group input bfds such that the toc
11349 within a group is less than 64k in size. */
11352 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11354 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11355 bfd_vma addr, off, limit;
11360 if (!htab->second_toc_pass)
11362 /* Keep track of the first .toc or .got section for this input bfd. */
11363 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11367 htab->toc_bfd = isec->owner;
11368 htab->toc_first_sec = isec;
11371 addr = isec->output_offset + isec->output_section->vma;
11372 off = addr - htab->toc_curr;
11373 limit = 0x80008000;
11374 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11376 if (off + isec->size > limit)
11378 addr = (htab->toc_first_sec->output_offset
11379 + htab->toc_first_sec->output_section->vma);
11380 htab->toc_curr = addr;
11381 htab->toc_curr &= -TOC_BASE_ALIGN;
11384 /* toc_curr is the base address of this toc group. Set elf_gp
11385 for the input section to be the offset relative to the
11386 output toc base plus 0x8000. Making the input elf_gp an
11387 offset allows us to move the toc as a whole without
11388 recalculating input elf_gp. */
11389 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11390 off += TOC_BASE_OFF;
11392 /* Die if someone uses a linker script that doesn't keep input
11393 file .toc and .got together. */
11395 && elf_gp (isec->owner) != 0
11396 && elf_gp (isec->owner) != off)
11399 elf_gp (isec->owner) = off;
11403 /* During the second pass toc_first_sec points to the start of
11404 a toc group, and toc_curr is used to track the old elf_gp.
11405 We use toc_bfd to ensure we only look at each bfd once. */
11406 if (htab->toc_bfd == isec->owner)
11408 htab->toc_bfd = isec->owner;
11410 if (htab->toc_first_sec == NULL
11411 || htab->toc_curr != elf_gp (isec->owner))
11413 htab->toc_curr = elf_gp (isec->owner);
11414 htab->toc_first_sec = isec;
11416 addr = (htab->toc_first_sec->output_offset
11417 + htab->toc_first_sec->output_section->vma);
11418 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11419 elf_gp (isec->owner) = off;
11424 /* Called via elf_link_hash_traverse to merge GOT entries for global
11428 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11430 if (h->root.type == bfd_link_hash_indirect)
11433 merge_got_entries (&h->got.glist);
11438 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11442 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11444 struct got_entry *gent;
11446 if (h->root.type == bfd_link_hash_indirect)
11449 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11450 if (!gent->is_indirect)
11451 allocate_got (h, (struct bfd_link_info *) inf, gent);
11455 /* Called on the first multitoc pass after the last call to
11456 ppc64_elf_next_toc_section. This function removes duplicate GOT
11460 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11462 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11463 struct bfd *ibfd, *ibfd2;
11464 bfd_boolean done_something;
11466 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11468 if (!htab->do_multi_toc)
11471 /* Merge global sym got entries within a toc group. */
11472 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11474 /* And tlsld_got. */
11475 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11477 struct got_entry *ent, *ent2;
11479 if (!is_ppc64_elf (ibfd))
11482 ent = ppc64_tlsld_got (ibfd);
11483 if (!ent->is_indirect
11484 && ent->got.offset != (bfd_vma) -1)
11486 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11488 if (!is_ppc64_elf (ibfd2))
11491 ent2 = ppc64_tlsld_got (ibfd2);
11492 if (!ent2->is_indirect
11493 && ent2->got.offset != (bfd_vma) -1
11494 && elf_gp (ibfd2) == elf_gp (ibfd))
11496 ent2->is_indirect = TRUE;
11497 ent2->got.ent = ent;
11503 /* Zap sizes of got sections. */
11504 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11505 htab->elf.irelplt->size -= htab->got_reli_size;
11506 htab->got_reli_size = 0;
11508 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11510 asection *got, *relgot;
11512 if (!is_ppc64_elf (ibfd))
11515 got = ppc64_elf_tdata (ibfd)->got;
11518 got->rawsize = got->size;
11520 relgot = ppc64_elf_tdata (ibfd)->relgot;
11521 relgot->rawsize = relgot->size;
11526 /* Now reallocate the got, local syms first. We don't need to
11527 allocate section contents again since we never increase size. */
11528 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11530 struct got_entry **lgot_ents;
11531 struct got_entry **end_lgot_ents;
11532 struct plt_entry **local_plt;
11533 struct plt_entry **end_local_plt;
11534 unsigned char *lgot_masks;
11535 bfd_size_type locsymcount;
11536 Elf_Internal_Shdr *symtab_hdr;
11539 if (!is_ppc64_elf (ibfd))
11542 lgot_ents = elf_local_got_ents (ibfd);
11546 symtab_hdr = &elf_symtab_hdr (ibfd);
11547 locsymcount = symtab_hdr->sh_info;
11548 end_lgot_ents = lgot_ents + locsymcount;
11549 local_plt = (struct plt_entry **) end_lgot_ents;
11550 end_local_plt = local_plt + locsymcount;
11551 lgot_masks = (unsigned char *) end_local_plt;
11552 s = ppc64_elf_tdata (ibfd)->got;
11553 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11555 struct got_entry *ent;
11557 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11559 unsigned int ent_size = 8;
11560 unsigned int rel_size = sizeof (Elf64_External_Rela);
11562 ent->got.offset = s->size;
11563 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11568 s->size += ent_size;
11569 if ((*lgot_masks & PLT_IFUNC) != 0)
11571 htab->elf.irelplt->size += rel_size;
11572 htab->got_reli_size += rel_size;
11574 else if (bfd_link_pic (info))
11576 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11577 srel->size += rel_size;
11583 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11585 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11587 struct got_entry *ent;
11589 if (!is_ppc64_elf (ibfd))
11592 ent = ppc64_tlsld_got (ibfd);
11593 if (!ent->is_indirect
11594 && ent->got.offset != (bfd_vma) -1)
11596 asection *s = ppc64_elf_tdata (ibfd)->got;
11597 ent->got.offset = s->size;
11599 if (bfd_link_pic (info))
11601 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11602 srel->size += sizeof (Elf64_External_Rela);
11607 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11608 if (!done_something)
11609 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11613 if (!is_ppc64_elf (ibfd))
11616 got = ppc64_elf_tdata (ibfd)->got;
11619 done_something = got->rawsize != got->size;
11620 if (done_something)
11625 if (done_something)
11626 (*htab->params->layout_sections_again) ();
11628 /* Set up for second pass over toc sections to recalculate elf_gp
11629 on input sections. */
11630 htab->toc_bfd = NULL;
11631 htab->toc_first_sec = NULL;
11632 htab->second_toc_pass = TRUE;
11633 return done_something;
11636 /* Called after second pass of multitoc partitioning. */
11639 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11641 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11643 /* After the second pass, toc_curr tracks the TOC offset used
11644 for code sections below in ppc64_elf_next_input_section. */
11645 htab->toc_curr = TOC_BASE_OFF;
11648 /* No toc references were found in ISEC. If the code in ISEC makes no
11649 calls, then there's no need to use toc adjusting stubs when branching
11650 into ISEC. Actually, indirect calls from ISEC are OK as they will
11651 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11652 needed, and 2 if a cyclical call-graph was found but no other reason
11653 for a stub was detected. If called from the top level, a return of
11654 2 means the same as a return of 0. */
11657 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11661 /* Mark this section as checked. */
11662 isec->call_check_done = 1;
11664 /* We know none of our code bearing sections will need toc stubs. */
11665 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11668 if (isec->size == 0)
11671 if (isec->output_section == NULL)
11675 if (isec->reloc_count != 0)
11677 Elf_Internal_Rela *relstart, *rel;
11678 Elf_Internal_Sym *local_syms;
11679 struct ppc_link_hash_table *htab;
11681 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11682 info->keep_memory);
11683 if (relstart == NULL)
11686 /* Look for branches to outside of this section. */
11688 htab = ppc_hash_table (info);
11692 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11694 enum elf_ppc64_reloc_type r_type;
11695 unsigned long r_symndx;
11696 struct elf_link_hash_entry *h;
11697 struct ppc_link_hash_entry *eh;
11698 Elf_Internal_Sym *sym;
11700 struct _opd_sec_data *opd;
11704 r_type = ELF64_R_TYPE (rel->r_info);
11705 if (r_type != R_PPC64_REL24
11706 && r_type != R_PPC64_REL14
11707 && r_type != R_PPC64_REL14_BRTAKEN
11708 && r_type != R_PPC64_REL14_BRNTAKEN)
11711 r_symndx = ELF64_R_SYM (rel->r_info);
11712 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11719 /* Calls to dynamic lib functions go through a plt call stub
11721 eh = (struct ppc_link_hash_entry *) h;
11723 && (eh->elf.plt.plist != NULL
11725 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11731 if (sym_sec == NULL)
11732 /* Ignore other undefined symbols. */
11735 /* Assume branches to other sections not included in the
11736 link need stubs too, to cover -R and absolute syms. */
11737 if (sym_sec->output_section == NULL)
11744 sym_value = sym->st_value;
11747 if (h->root.type != bfd_link_hash_defined
11748 && h->root.type != bfd_link_hash_defweak)
11750 sym_value = h->root.u.def.value;
11752 sym_value += rel->r_addend;
11754 /* If this branch reloc uses an opd sym, find the code section. */
11755 opd = get_opd_info (sym_sec);
11758 if (h == NULL && opd->adjust != NULL)
11762 adjust = opd->adjust[OPD_NDX (sym_value)];
11764 /* Assume deleted functions won't ever be called. */
11766 sym_value += adjust;
11769 dest = opd_entry_value (sym_sec, sym_value,
11770 &sym_sec, NULL, FALSE);
11771 if (dest == (bfd_vma) -1)
11776 + sym_sec->output_offset
11777 + sym_sec->output_section->vma);
11779 /* Ignore branch to self. */
11780 if (sym_sec == isec)
11783 /* If the called function uses the toc, we need a stub. */
11784 if (sym_sec->has_toc_reloc
11785 || sym_sec->makes_toc_func_call)
11791 /* Assume any branch that needs a long branch stub might in fact
11792 need a plt_branch stub. A plt_branch stub uses r2. */
11793 else if (dest - (isec->output_offset
11794 + isec->output_section->vma
11795 + rel->r_offset) + (1 << 25)
11796 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11804 /* If calling back to a section in the process of being
11805 tested, we can't say for sure that no toc adjusting stubs
11806 are needed, so don't return zero. */
11807 else if (sym_sec->call_check_in_progress)
11810 /* Branches to another section that itself doesn't have any TOC
11811 references are OK. Recursively call ourselves to check. */
11812 else if (!sym_sec->call_check_done)
11816 /* Mark current section as indeterminate, so that other
11817 sections that call back to current won't be marked as
11819 isec->call_check_in_progress = 1;
11820 recur = toc_adjusting_stub_needed (info, sym_sec);
11821 isec->call_check_in_progress = 0;
11832 if (local_syms != NULL
11833 && (elf_symtab_hdr (isec->owner).contents
11834 != (unsigned char *) local_syms))
11836 if (elf_section_data (isec)->relocs != relstart)
11841 && isec->map_head.s != NULL
11842 && (strcmp (isec->output_section->name, ".init") == 0
11843 || strcmp (isec->output_section->name, ".fini") == 0))
11845 if (isec->map_head.s->has_toc_reloc
11846 || isec->map_head.s->makes_toc_func_call)
11848 else if (!isec->map_head.s->call_check_done)
11851 isec->call_check_in_progress = 1;
11852 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11853 isec->call_check_in_progress = 0;
11860 isec->makes_toc_func_call = 1;
11865 /* The linker repeatedly calls this function for each input section,
11866 in the order that input sections are linked into output sections.
11867 Build lists of input sections to determine groupings between which
11868 we may insert linker stubs. */
11871 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11873 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11878 if ((isec->output_section->flags & SEC_CODE) != 0
11879 && isec->output_section->id < htab->sec_info_arr_size)
11881 /* This happens to make the list in reverse order,
11882 which is what we want. */
11883 htab->sec_info[isec->id].u.list
11884 = htab->sec_info[isec->output_section->id].u.list;
11885 htab->sec_info[isec->output_section->id].u.list = isec;
11888 if (htab->multi_toc_needed)
11890 /* Analyse sections that aren't already flagged as needing a
11891 valid toc pointer. Exclude .fixup for the linux kernel.
11892 .fixup contains branches, but only back to the function that
11893 hit an exception. */
11894 if (!(isec->has_toc_reloc
11895 || (isec->flags & SEC_CODE) == 0
11896 || strcmp (isec->name, ".fixup") == 0
11897 || isec->call_check_done))
11899 if (toc_adjusting_stub_needed (info, isec) < 0)
11902 /* Make all sections use the TOC assigned for this object file.
11903 This will be wrong for pasted sections; We fix that in
11904 check_pasted_section(). */
11905 if (elf_gp (isec->owner) != 0)
11906 htab->toc_curr = elf_gp (isec->owner);
11909 htab->sec_info[isec->id].toc_off = htab->toc_curr;
11913 /* Check that all .init and .fini sections use the same toc, if they
11914 have toc relocs. */
11917 check_pasted_section (struct bfd_link_info *info, const char *name)
11919 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11923 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11924 bfd_vma toc_off = 0;
11927 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11928 if (i->has_toc_reloc)
11931 toc_off = htab->sec_info[i->id].toc_off;
11932 else if (toc_off != htab->sec_info[i->id].toc_off)
11937 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11938 if (i->makes_toc_func_call)
11940 toc_off = htab->sec_info[i->id].toc_off;
11944 /* Make sure the whole pasted function uses the same toc offset. */
11946 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11947 htab->sec_info[i->id].toc_off = toc_off;
11953 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11955 return (check_pasted_section (info, ".init")
11956 & check_pasted_section (info, ".fini"));
11959 /* See whether we can group stub sections together. Grouping stub
11960 sections may result in fewer stubs. More importantly, we need to
11961 put all .init* and .fini* stubs at the beginning of the .init or
11962 .fini output sections respectively, because glibc splits the
11963 _init and _fini functions into multiple parts. Putting a stub in
11964 the middle of a function is not a good idea. */
11967 group_sections (struct bfd_link_info *info,
11968 bfd_size_type stub_group_size,
11969 bfd_boolean stubs_always_before_branch)
11971 struct ppc_link_hash_table *htab;
11973 bfd_size_type stub14_group_size;
11974 bfd_boolean suppress_size_errors;
11976 htab = ppc_hash_table (info);
11980 suppress_size_errors = FALSE;
11981 stub14_group_size = stub_group_size >> 10;
11982 if (stub_group_size == 1)
11984 /* Default values. */
11985 if (stubs_always_before_branch)
11987 stub_group_size = 0x1e00000;
11988 stub14_group_size = 0x7800;
11992 stub_group_size = 0x1c00000;
11993 stub14_group_size = 0x7000;
11995 suppress_size_errors = TRUE;
11998 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12002 if (osec->id >= htab->sec_info_arr_size)
12005 tail = htab->sec_info[osec->id].u.list;
12006 while (tail != NULL)
12010 bfd_size_type total;
12011 bfd_boolean big_sec;
12013 struct map_stub *group;
12016 total = tail->size;
12017 big_sec = total > (ppc64_elf_section_data (tail) != NULL
12018 && ppc64_elf_section_data (tail)->has_14bit_branch
12019 ? stub14_group_size : stub_group_size);
12020 if (big_sec && !suppress_size_errors)
12021 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
12022 tail->owner, tail);
12023 curr_toc = htab->sec_info[tail->id].toc_off;
12025 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12026 && ((total += curr->output_offset - prev->output_offset)
12027 < (ppc64_elf_section_data (prev) != NULL
12028 && ppc64_elf_section_data (prev)->has_14bit_branch
12029 ? stub14_group_size : stub_group_size))
12030 && htab->sec_info[prev->id].toc_off == curr_toc)
12033 /* OK, the size from the start of CURR to the end is less
12034 than stub_group_size and thus can be handled by one stub
12035 section. (or the tail section is itself larger than
12036 stub_group_size, in which case we may be toast.) We
12037 should really be keeping track of the total size of stubs
12038 added here, as stubs contribute to the final output
12039 section size. That's a little tricky, and this way will
12040 only break if stubs added make the total size more than
12041 2^25, ie. for the default stub_group_size, if stubs total
12042 more than 2097152 bytes, or nearly 75000 plt call stubs. */
12043 group = bfd_alloc (curr->owner, sizeof (*group));
12046 group->link_sec = curr;
12047 group->stub_sec = NULL;
12048 group->needs_save_res = 0;
12049 group->next = htab->group;
12050 htab->group = group;
12053 prev = htab->sec_info[tail->id].u.list;
12054 /* Set up this stub group. */
12055 htab->sec_info[tail->id].u.group = group;
12057 while (tail != curr && (tail = prev) != NULL);
12059 /* But wait, there's more! Input sections up to stub_group_size
12060 bytes before the stub section can be handled by it too.
12061 Don't do this if we have a really large section after the
12062 stubs, as adding more stubs increases the chance that
12063 branches may not reach into the stub section. */
12064 if (!stubs_always_before_branch && !big_sec)
12067 while (prev != NULL
12068 && ((total += tail->output_offset - prev->output_offset)
12069 < (ppc64_elf_section_data (prev) != NULL
12070 && ppc64_elf_section_data (prev)->has_14bit_branch
12071 ? stub14_group_size : stub_group_size))
12072 && htab->sec_info[prev->id].toc_off == curr_toc)
12075 prev = htab->sec_info[tail->id].u.list;
12076 htab->sec_info[tail->id].u.group = group;
12085 static const unsigned char glink_eh_frame_cie[] =
12087 0, 0, 0, 16, /* length. */
12088 0, 0, 0, 0, /* id. */
12089 1, /* CIE version. */
12090 'z', 'R', 0, /* Augmentation string. */
12091 4, /* Code alignment. */
12092 0x78, /* Data alignment. */
12094 1, /* Augmentation size. */
12095 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12096 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
12100 /* Stripping output sections is normally done before dynamic section
12101 symbols have been allocated. This function is called later, and
12102 handles cases like htab->brlt which is mapped to its own output
12106 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12108 if (isec->size == 0
12109 && isec->output_section->size == 0
12110 && !(isec->output_section->flags & SEC_KEEP)
12111 && !bfd_section_removed_from_list (info->output_bfd,
12112 isec->output_section)
12113 && elf_section_data (isec->output_section)->dynindx == 0)
12115 isec->output_section->flags |= SEC_EXCLUDE;
12116 bfd_section_list_remove (info->output_bfd, isec->output_section);
12117 info->output_bfd->section_count--;
12121 /* Determine and set the size of the stub section for a final link.
12123 The basic idea here is to examine all the relocations looking for
12124 PC-relative calls to a target that is unreachable with a "bl"
12128 ppc64_elf_size_stubs (struct bfd_link_info *info)
12130 bfd_size_type stub_group_size;
12131 bfd_boolean stubs_always_before_branch;
12132 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12137 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12138 htab->params->plt_thread_safe = 1;
12139 if (!htab->opd_abi)
12140 htab->params->plt_thread_safe = 0;
12141 else if (htab->params->plt_thread_safe == -1)
12143 static const char *const thread_starter[] =
12147 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12149 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12150 "mq_notify", "create_timer",
12155 "GOMP_parallel_start",
12156 "GOMP_parallel_loop_static",
12157 "GOMP_parallel_loop_static_start",
12158 "GOMP_parallel_loop_dynamic",
12159 "GOMP_parallel_loop_dynamic_start",
12160 "GOMP_parallel_loop_guided",
12161 "GOMP_parallel_loop_guided_start",
12162 "GOMP_parallel_loop_runtime",
12163 "GOMP_parallel_loop_runtime_start",
12164 "GOMP_parallel_sections",
12165 "GOMP_parallel_sections_start",
12171 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12173 struct elf_link_hash_entry *h;
12174 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12175 FALSE, FALSE, TRUE);
12176 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12177 if (htab->params->plt_thread_safe)
12181 stubs_always_before_branch = htab->params->group_size < 0;
12182 if (htab->params->group_size < 0)
12183 stub_group_size = -htab->params->group_size;
12185 stub_group_size = htab->params->group_size;
12187 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12190 #define STUB_SHRINK_ITER 20
12191 /* Loop until no stubs added. After iteration 20 of this loop we may
12192 exit on a stub section shrinking. This is to break out of a
12193 pathological case where adding stubs on one iteration decreases
12194 section gaps (perhaps due to alignment), which then requires
12195 fewer or smaller stubs on the next iteration. */
12200 unsigned int bfd_indx;
12201 struct map_stub *group;
12202 asection *stub_sec;
12204 htab->stub_iteration += 1;
12206 for (input_bfd = info->input_bfds, bfd_indx = 0;
12208 input_bfd = input_bfd->link.next, bfd_indx++)
12210 Elf_Internal_Shdr *symtab_hdr;
12212 Elf_Internal_Sym *local_syms = NULL;
12214 if (!is_ppc64_elf (input_bfd))
12217 /* We'll need the symbol table in a second. */
12218 symtab_hdr = &elf_symtab_hdr (input_bfd);
12219 if (symtab_hdr->sh_info == 0)
12222 /* Walk over each section attached to the input bfd. */
12223 for (section = input_bfd->sections;
12225 section = section->next)
12227 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12229 /* If there aren't any relocs, then there's nothing more
12231 if ((section->flags & SEC_RELOC) == 0
12232 || (section->flags & SEC_ALLOC) == 0
12233 || (section->flags & SEC_LOAD) == 0
12234 || (section->flags & SEC_CODE) == 0
12235 || section->reloc_count == 0)
12238 /* If this section is a link-once section that will be
12239 discarded, then don't create any stubs. */
12240 if (section->output_section == NULL
12241 || section->output_section->owner != info->output_bfd)
12244 /* Get the relocs. */
12246 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12247 info->keep_memory);
12248 if (internal_relocs == NULL)
12249 goto error_ret_free_local;
12251 /* Now examine each relocation. */
12252 irela = internal_relocs;
12253 irelaend = irela + section->reloc_count;
12254 for (; irela < irelaend; irela++)
12256 enum elf_ppc64_reloc_type r_type;
12257 unsigned int r_indx;
12258 enum ppc_stub_type stub_type;
12259 struct ppc_stub_hash_entry *stub_entry;
12260 asection *sym_sec, *code_sec;
12261 bfd_vma sym_value, code_value;
12262 bfd_vma destination;
12263 unsigned long local_off;
12264 bfd_boolean ok_dest;
12265 struct ppc_link_hash_entry *hash;
12266 struct ppc_link_hash_entry *fdh;
12267 struct elf_link_hash_entry *h;
12268 Elf_Internal_Sym *sym;
12270 const asection *id_sec;
12271 struct _opd_sec_data *opd;
12272 struct plt_entry *plt_ent;
12274 r_type = ELF64_R_TYPE (irela->r_info);
12275 r_indx = ELF64_R_SYM (irela->r_info);
12277 if (r_type >= R_PPC64_max)
12279 bfd_set_error (bfd_error_bad_value);
12280 goto error_ret_free_internal;
12283 /* Only look for stubs on branch instructions. */
12284 if (r_type != R_PPC64_REL24
12285 && r_type != R_PPC64_REL14
12286 && r_type != R_PPC64_REL14_BRTAKEN
12287 && r_type != R_PPC64_REL14_BRNTAKEN)
12290 /* Now determine the call target, its name, value,
12292 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12293 r_indx, input_bfd))
12294 goto error_ret_free_internal;
12295 hash = (struct ppc_link_hash_entry *) h;
12302 sym_value = sym->st_value;
12303 if (sym_sec != NULL
12304 && sym_sec->output_section != NULL)
12307 else if (hash->elf.root.type == bfd_link_hash_defined
12308 || hash->elf.root.type == bfd_link_hash_defweak)
12310 sym_value = hash->elf.root.u.def.value;
12311 if (sym_sec->output_section != NULL)
12314 else if (hash->elf.root.type == bfd_link_hash_undefweak
12315 || hash->elf.root.type == bfd_link_hash_undefined)
12317 /* Recognise an old ABI func code entry sym, and
12318 use the func descriptor sym instead if it is
12320 if (hash->elf.root.root.string[0] == '.'
12321 && (fdh = lookup_fdh (hash, htab)) != NULL)
12323 if (fdh->elf.root.type == bfd_link_hash_defined
12324 || fdh->elf.root.type == bfd_link_hash_defweak)
12326 sym_sec = fdh->elf.root.u.def.section;
12327 sym_value = fdh->elf.root.u.def.value;
12328 if (sym_sec->output_section != NULL)
12337 bfd_set_error (bfd_error_bad_value);
12338 goto error_ret_free_internal;
12345 sym_value += irela->r_addend;
12346 destination = (sym_value
12347 + sym_sec->output_offset
12348 + sym_sec->output_section->vma);
12349 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12354 code_sec = sym_sec;
12355 code_value = sym_value;
12356 opd = get_opd_info (sym_sec);
12361 if (hash == NULL && opd->adjust != NULL)
12363 long adjust = opd->adjust[OPD_NDX (sym_value)];
12366 code_value += adjust;
12367 sym_value += adjust;
12369 dest = opd_entry_value (sym_sec, sym_value,
12370 &code_sec, &code_value, FALSE);
12371 if (dest != (bfd_vma) -1)
12373 destination = dest;
12376 /* Fixup old ABI sym to point at code
12378 hash->elf.root.type = bfd_link_hash_defweak;
12379 hash->elf.root.u.def.section = code_sec;
12380 hash->elf.root.u.def.value = code_value;
12385 /* Determine what (if any) linker stub is needed. */
12387 stub_type = ppc_type_of_stub (section, irela, &hash,
12388 &plt_ent, destination,
12391 if (stub_type != ppc_stub_plt_call)
12393 /* Check whether we need a TOC adjusting stub.
12394 Since the linker pastes together pieces from
12395 different object files when creating the
12396 _init and _fini functions, it may be that a
12397 call to what looks like a local sym is in
12398 fact a call needing a TOC adjustment. */
12399 if (code_sec != NULL
12400 && code_sec->output_section != NULL
12401 && (htab->sec_info[code_sec->id].toc_off
12402 != htab->sec_info[section->id].toc_off)
12403 && (code_sec->has_toc_reloc
12404 || code_sec->makes_toc_func_call))
12405 stub_type = ppc_stub_long_branch_r2off;
12408 if (stub_type == ppc_stub_none)
12411 /* __tls_get_addr calls might be eliminated. */
12412 if (stub_type != ppc_stub_plt_call
12414 && (hash == htab->tls_get_addr
12415 || hash == htab->tls_get_addr_fd)
12416 && section->has_tls_reloc
12417 && irela != internal_relocs)
12419 /* Get tls info. */
12420 unsigned char *tls_mask;
12422 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12423 irela - 1, input_bfd))
12424 goto error_ret_free_internal;
12425 if (*tls_mask != 0)
12429 if (stub_type == ppc_stub_plt_call
12430 && irela + 1 < irelaend
12431 && irela[1].r_offset == irela->r_offset + 4
12432 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12434 if (!tocsave_find (htab, INSERT,
12435 &local_syms, irela + 1, input_bfd))
12436 goto error_ret_free_internal;
12438 else if (stub_type == ppc_stub_plt_call)
12439 stub_type = ppc_stub_plt_call_r2save;
12441 /* Support for grouping stub sections. */
12442 id_sec = htab->sec_info[section->id].u.group->link_sec;
12444 /* Get the name of this stub. */
12445 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12447 goto error_ret_free_internal;
12449 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12450 stub_name, FALSE, FALSE);
12451 if (stub_entry != NULL)
12453 /* The proper stub has already been created. */
12455 if (stub_type == ppc_stub_plt_call_r2save)
12456 stub_entry->stub_type = stub_type;
12460 stub_entry = ppc_add_stub (stub_name, section, info);
12461 if (stub_entry == NULL)
12464 error_ret_free_internal:
12465 if (elf_section_data (section)->relocs == NULL)
12466 free (internal_relocs);
12467 error_ret_free_local:
12468 if (local_syms != NULL
12469 && (symtab_hdr->contents
12470 != (unsigned char *) local_syms))
12475 stub_entry->stub_type = stub_type;
12476 if (stub_type != ppc_stub_plt_call
12477 && stub_type != ppc_stub_plt_call_r2save)
12479 stub_entry->target_value = code_value;
12480 stub_entry->target_section = code_sec;
12484 stub_entry->target_value = sym_value;
12485 stub_entry->target_section = sym_sec;
12487 stub_entry->h = hash;
12488 stub_entry->plt_ent = plt_ent;
12489 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12491 if (stub_entry->h != NULL)
12492 htab->stub_globals += 1;
12495 /* We're done with the internal relocs, free them. */
12496 if (elf_section_data (section)->relocs != internal_relocs)
12497 free (internal_relocs);
12500 if (local_syms != NULL
12501 && symtab_hdr->contents != (unsigned char *) local_syms)
12503 if (!info->keep_memory)
12506 symtab_hdr->contents = (unsigned char *) local_syms;
12510 /* We may have added some stubs. Find out the new size of the
12512 for (stub_sec = htab->params->stub_bfd->sections;
12514 stub_sec = stub_sec->next)
12515 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12517 stub_sec->rawsize = stub_sec->size;
12518 stub_sec->size = 0;
12519 stub_sec->reloc_count = 0;
12520 stub_sec->flags &= ~SEC_RELOC;
12523 htab->brlt->size = 0;
12524 htab->brlt->reloc_count = 0;
12525 htab->brlt->flags &= ~SEC_RELOC;
12526 if (htab->relbrlt != NULL)
12527 htab->relbrlt->size = 0;
12529 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12531 for (group = htab->group; group != NULL; group = group->next)
12532 if (group->needs_save_res)
12533 group->stub_sec->size += htab->sfpr->size;
12535 if (info->emitrelocations
12536 && htab->glink != NULL && htab->glink->size != 0)
12538 htab->glink->reloc_count = 1;
12539 htab->glink->flags |= SEC_RELOC;
12542 if (htab->glink_eh_frame != NULL
12543 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12544 && htab->glink_eh_frame->output_section->size != 0)
12546 size_t size = 0, align;
12548 for (stub_sec = htab->params->stub_bfd->sections;
12550 stub_sec = stub_sec->next)
12551 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12553 if (htab->glink != NULL && htab->glink->size != 0)
12556 size += sizeof (glink_eh_frame_cie);
12558 align <<= htab->glink_eh_frame->output_section->alignment_power;
12560 size = (size + align) & ~align;
12561 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12562 htab->glink_eh_frame->size = size;
12565 if (htab->params->plt_stub_align != 0)
12566 for (stub_sec = htab->params->stub_bfd->sections;
12568 stub_sec = stub_sec->next)
12569 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12570 stub_sec->size = ((stub_sec->size
12571 + (1 << htab->params->plt_stub_align) - 1)
12572 & -(1 << htab->params->plt_stub_align));
12574 for (stub_sec = htab->params->stub_bfd->sections;
12576 stub_sec = stub_sec->next)
12577 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12578 && stub_sec->rawsize != stub_sec->size
12579 && (htab->stub_iteration <= STUB_SHRINK_ITER
12580 || stub_sec->rawsize < stub_sec->size))
12583 if (stub_sec == NULL
12584 && (htab->glink_eh_frame == NULL
12585 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12588 /* Ask the linker to do its stuff. */
12589 (*htab->params->layout_sections_again) ();
12592 if (htab->glink_eh_frame != NULL
12593 && htab->glink_eh_frame->size != 0)
12596 bfd_byte *p, *last_fde;
12597 size_t last_fde_len, size, align, pad;
12598 asection *stub_sec;
12600 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12603 htab->glink_eh_frame->contents = p;
12606 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12607 /* CIE length (rewrite in case little-endian). */
12608 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12609 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12610 p += sizeof (glink_eh_frame_cie);
12612 for (stub_sec = htab->params->stub_bfd->sections;
12614 stub_sec = stub_sec->next)
12615 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12620 bfd_put_32 (htab->elf.dynobj, 20, p);
12623 val = p - htab->glink_eh_frame->contents;
12624 bfd_put_32 (htab->elf.dynobj, val, p);
12626 /* Offset to stub section, written later. */
12628 /* stub section size. */
12629 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12631 /* Augmentation. */
12636 if (htab->glink != NULL && htab->glink->size != 0)
12641 bfd_put_32 (htab->elf.dynobj, 20, p);
12644 val = p - htab->glink_eh_frame->contents;
12645 bfd_put_32 (htab->elf.dynobj, val, p);
12647 /* Offset to .glink, written later. */
12650 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12652 /* Augmentation. */
12655 *p++ = DW_CFA_advance_loc + 1;
12656 *p++ = DW_CFA_register;
12658 *p++ = htab->opd_abi ? 12 : 0;
12659 *p++ = DW_CFA_advance_loc + 4;
12660 *p++ = DW_CFA_restore_extended;
12663 /* Subsume any padding into the last FDE if user .eh_frame
12664 sections are aligned more than glink_eh_frame. Otherwise any
12665 zero padding will be seen as a terminator. */
12666 size = p - htab->glink_eh_frame->contents;
12668 align <<= htab->glink_eh_frame->output_section->alignment_power;
12670 pad = ((size + align) & ~align) - size;
12671 htab->glink_eh_frame->size = size + pad;
12672 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12675 maybe_strip_output (info, htab->brlt);
12676 if (htab->glink_eh_frame != NULL)
12677 maybe_strip_output (info, htab->glink_eh_frame);
12682 /* Called after we have determined section placement. If sections
12683 move, we'll be called again. Provide a value for TOCstart. */
12686 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12689 bfd_vma TOCstart, adjust;
12693 struct elf_link_hash_entry *h;
12694 struct elf_link_hash_table *htab = elf_hash_table (info);
12696 if (is_elf_hash_table (htab)
12697 && htab->hgot != NULL)
12701 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12702 if (is_elf_hash_table (htab))
12706 && h->root.type == bfd_link_hash_defined
12707 && !h->root.linker_def
12708 && (!is_elf_hash_table (htab)
12709 || h->def_regular))
12711 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12712 + h->root.u.def.section->output_offset
12713 + h->root.u.def.section->output_section->vma);
12714 _bfd_set_gp_value (obfd, TOCstart);
12719 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12720 order. The TOC starts where the first of these sections starts. */
12721 s = bfd_get_section_by_name (obfd, ".got");
12722 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12723 s = bfd_get_section_by_name (obfd, ".toc");
12724 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12725 s = bfd_get_section_by_name (obfd, ".tocbss");
12726 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12727 s = bfd_get_section_by_name (obfd, ".plt");
12728 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12730 /* This may happen for
12731 o references to TOC base (SYM@toc / TOC[tc0]) without a
12733 o bad linker script
12734 o --gc-sections and empty TOC sections
12736 FIXME: Warn user? */
12738 /* Look for a likely section. We probably won't even be
12740 for (s = obfd->sections; s != NULL; s = s->next)
12741 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12743 == (SEC_ALLOC | SEC_SMALL_DATA))
12746 for (s = obfd->sections; s != NULL; s = s->next)
12747 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12748 == (SEC_ALLOC | SEC_SMALL_DATA))
12751 for (s = obfd->sections; s != NULL; s = s->next)
12752 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12756 for (s = obfd->sections; s != NULL; s = s->next)
12757 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12763 TOCstart = s->output_section->vma + s->output_offset;
12765 /* Force alignment. */
12766 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12767 TOCstart -= adjust;
12768 _bfd_set_gp_value (obfd, TOCstart);
12770 if (info != NULL && s != NULL)
12772 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12776 if (htab->elf.hgot != NULL)
12778 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
12779 htab->elf.hgot->root.u.def.section = s;
12784 struct bfd_link_hash_entry *bh = NULL;
12785 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12786 s, TOC_BASE_OFF - adjust,
12787 NULL, FALSE, FALSE, &bh);
12793 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12794 write out any global entry stubs. */
12797 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12799 struct bfd_link_info *info;
12800 struct ppc_link_hash_table *htab;
12801 struct plt_entry *pent;
12804 if (h->root.type == bfd_link_hash_indirect)
12807 if (!h->pointer_equality_needed)
12810 if (h->def_regular)
12814 htab = ppc_hash_table (info);
12819 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12820 if (pent->plt.offset != (bfd_vma) -1
12821 && pent->addend == 0)
12827 p = s->contents + h->root.u.def.value;
12828 plt = htab->elf.splt;
12829 if (!htab->elf.dynamic_sections_created
12830 || h->dynindx == -1)
12831 plt = htab->elf.iplt;
12832 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12833 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12835 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12837 info->callbacks->einfo
12838 (_("%P: linkage table error against `%T'\n"),
12839 h->root.root.string);
12840 bfd_set_error (bfd_error_bad_value);
12841 htab->stub_error = TRUE;
12844 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12845 if (htab->params->emit_stub_syms)
12847 size_t len = strlen (h->root.root.string);
12848 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12853 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12854 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12857 if (h->root.type == bfd_link_hash_new)
12859 h->root.type = bfd_link_hash_defined;
12860 h->root.u.def.section = s;
12861 h->root.u.def.value = p - s->contents;
12862 h->ref_regular = 1;
12863 h->def_regular = 1;
12864 h->ref_regular_nonweak = 1;
12865 h->forced_local = 1;
12867 h->root.linker_def = 1;
12871 if (PPC_HA (off) != 0)
12873 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12876 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12878 bfd_put_32 (s->owner, MTCTR_R12, p);
12880 bfd_put_32 (s->owner, BCTR, p);
12886 /* Build all the stubs associated with the current output file.
12887 The stubs are kept in a hash table attached to the main linker
12888 hash table. This function is called via gldelf64ppc_finish. */
12891 ppc64_elf_build_stubs (struct bfd_link_info *info,
12894 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12895 struct map_stub *group;
12896 asection *stub_sec;
12898 int stub_sec_count = 0;
12903 /* Allocate memory to hold the linker stubs. */
12904 for (stub_sec = htab->params->stub_bfd->sections;
12906 stub_sec = stub_sec->next)
12907 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12908 && stub_sec->size != 0)
12910 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12911 if (stub_sec->contents == NULL)
12913 stub_sec->size = 0;
12916 if (htab->glink != NULL && htab->glink->size != 0)
12921 /* Build the .glink plt call stub. */
12922 if (htab->params->emit_stub_syms)
12924 struct elf_link_hash_entry *h;
12925 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12926 TRUE, FALSE, FALSE);
12929 if (h->root.type == bfd_link_hash_new)
12931 h->root.type = bfd_link_hash_defined;
12932 h->root.u.def.section = htab->glink;
12933 h->root.u.def.value = 8;
12934 h->ref_regular = 1;
12935 h->def_regular = 1;
12936 h->ref_regular_nonweak = 1;
12937 h->forced_local = 1;
12939 h->root.linker_def = 1;
12942 plt0 = (htab->elf.splt->output_section->vma
12943 + htab->elf.splt->output_offset
12945 if (info->emitrelocations)
12947 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12950 r->r_offset = (htab->glink->output_offset
12951 + htab->glink->output_section->vma);
12952 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12953 r->r_addend = plt0;
12955 p = htab->glink->contents;
12956 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12957 bfd_put_64 (htab->glink->owner, plt0, p);
12961 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12963 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12965 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12967 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12969 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12971 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12973 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12975 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12977 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12979 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12984 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12986 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12988 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12990 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12992 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12994 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12996 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12998 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13000 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13002 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13004 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13006 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13009 bfd_put_32 (htab->glink->owner, BCTR, p);
13011 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13013 bfd_put_32 (htab->glink->owner, NOP, p);
13017 /* Build the .glink lazy link call stubs. */
13019 while (p < htab->glink->contents + htab->glink->rawsize)
13025 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13030 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13032 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13037 bfd_put_32 (htab->glink->owner,
13038 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13043 /* Build .glink global entry stubs. */
13044 if (htab->glink->size > htab->glink->rawsize)
13045 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13048 if (htab->brlt != NULL && htab->brlt->size != 0)
13050 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13052 if (htab->brlt->contents == NULL)
13055 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13057 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13058 htab->relbrlt->size);
13059 if (htab->relbrlt->contents == NULL)
13063 /* Build the stubs as directed by the stub hash table. */
13064 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13066 for (group = htab->group; group != NULL; group = group->next)
13067 if (group->needs_save_res)
13069 stub_sec = group->stub_sec;
13070 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13072 if (htab->params->emit_stub_syms)
13076 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13077 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13080 stub_sec->size += htab->sfpr->size;
13083 if (htab->relbrlt != NULL)
13084 htab->relbrlt->reloc_count = 0;
13086 if (htab->params->plt_stub_align != 0)
13087 for (stub_sec = htab->params->stub_bfd->sections;
13089 stub_sec = stub_sec->next)
13090 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13091 stub_sec->size = ((stub_sec->size
13092 + (1 << htab->params->plt_stub_align) - 1)
13093 & -(1 << htab->params->plt_stub_align));
13095 for (stub_sec = htab->params->stub_bfd->sections;
13097 stub_sec = stub_sec->next)
13098 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13100 stub_sec_count += 1;
13101 if (stub_sec->rawsize != stub_sec->size
13102 && (htab->stub_iteration <= STUB_SHRINK_ITER
13103 || stub_sec->rawsize < stub_sec->size))
13107 /* Note that the glink_eh_frame check here is not only testing that
13108 the generated size matched the calculated size but also that
13109 bfd_elf_discard_info didn't make any changes to the section. */
13110 if (stub_sec != NULL
13111 || (htab->glink_eh_frame != NULL
13112 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
13114 htab->stub_error = TRUE;
13115 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13118 if (htab->stub_error)
13123 *stats = bfd_malloc (500);
13124 if (*stats == NULL)
13127 sprintf (*stats, _("linker stubs in %u group%s\n"
13129 " toc adjust %lu\n"
13130 " long branch %lu\n"
13131 " long toc adj %lu\n"
13133 " plt call toc %lu\n"
13134 " global entry %lu"),
13136 stub_sec_count == 1 ? "" : "s",
13137 htab->stub_count[ppc_stub_long_branch - 1],
13138 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13139 htab->stub_count[ppc_stub_plt_branch - 1],
13140 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13141 htab->stub_count[ppc_stub_plt_call - 1],
13142 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13143 htab->stub_count[ppc_stub_global_entry - 1]);
13148 /* This function undoes the changes made by add_symbol_adjust. */
13151 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
13153 struct ppc_link_hash_entry *eh;
13155 if (h->root.type == bfd_link_hash_indirect)
13158 eh = (struct ppc_link_hash_entry *) h;
13159 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
13162 eh->elf.root.type = bfd_link_hash_undefined;
13167 ppc64_elf_restore_symbols (struct bfd_link_info *info)
13169 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13172 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
13175 /* What to do when ld finds relocations against symbols defined in
13176 discarded sections. */
13178 static unsigned int
13179 ppc64_elf_action_discarded (asection *sec)
13181 if (strcmp (".opd", sec->name) == 0)
13184 if (strcmp (".toc", sec->name) == 0)
13187 if (strcmp (".toc1", sec->name) == 0)
13190 return _bfd_elf_default_action_discarded (sec);
13193 /* The RELOCATE_SECTION function is called by the ELF backend linker
13194 to handle the relocations for a section.
13196 The relocs are always passed as Rela structures; if the section
13197 actually uses Rel structures, the r_addend field will always be
13200 This function is responsible for adjust the section contents as
13201 necessary, and (if using Rela relocs and generating a
13202 relocatable output file) adjusting the reloc addend as
13205 This function does not have to worry about setting the reloc
13206 address or the reloc symbol index.
13208 LOCAL_SYMS is a pointer to the swapped in local symbols.
13210 LOCAL_SECTIONS is an array giving the section in the input file
13211 corresponding to the st_shndx field of each local symbol.
13213 The global hash table entry for the global symbols can be found
13214 via elf_sym_hashes (input_bfd).
13216 When generating relocatable output, this function must handle
13217 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13218 going to be the section symbol corresponding to the output
13219 section, which means that the addend must be adjusted
13223 ppc64_elf_relocate_section (bfd *output_bfd,
13224 struct bfd_link_info *info,
13226 asection *input_section,
13227 bfd_byte *contents,
13228 Elf_Internal_Rela *relocs,
13229 Elf_Internal_Sym *local_syms,
13230 asection **local_sections)
13232 struct ppc_link_hash_table *htab;
13233 Elf_Internal_Shdr *symtab_hdr;
13234 struct elf_link_hash_entry **sym_hashes;
13235 Elf_Internal_Rela *rel;
13236 Elf_Internal_Rela *wrel;
13237 Elf_Internal_Rela *relend;
13238 Elf_Internal_Rela outrel;
13240 struct got_entry **local_got_ents;
13242 bfd_boolean ret = TRUE;
13243 bfd_boolean is_opd;
13244 /* Assume 'at' branch hints. */
13245 bfd_boolean is_isa_v2 = TRUE;
13246 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
13248 /* Initialize howto table if needed. */
13249 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13252 htab = ppc_hash_table (info);
13256 /* Don't relocate stub sections. */
13257 if (input_section->owner == htab->params->stub_bfd)
13260 BFD_ASSERT (is_ppc64_elf (input_bfd));
13262 local_got_ents = elf_local_got_ents (input_bfd);
13263 TOCstart = elf_gp (output_bfd);
13264 symtab_hdr = &elf_symtab_hdr (input_bfd);
13265 sym_hashes = elf_sym_hashes (input_bfd);
13266 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13268 rel = wrel = relocs;
13269 relend = relocs + input_section->reloc_count;
13270 for (; rel < relend; wrel++, rel++)
13272 enum elf_ppc64_reloc_type r_type;
13274 bfd_reloc_status_type r;
13275 Elf_Internal_Sym *sym;
13277 struct elf_link_hash_entry *h_elf;
13278 struct ppc_link_hash_entry *h;
13279 struct ppc_link_hash_entry *fdh;
13280 const char *sym_name;
13281 unsigned long r_symndx, toc_symndx;
13282 bfd_vma toc_addend;
13283 unsigned char tls_mask, tls_gd, tls_type;
13284 unsigned char sym_type;
13285 bfd_vma relocation;
13286 bfd_boolean unresolved_reloc;
13287 bfd_boolean warned;
13288 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13291 struct ppc_stub_hash_entry *stub_entry;
13292 bfd_vma max_br_offset;
13294 Elf_Internal_Rela orig_rel;
13295 reloc_howto_type *howto;
13296 struct reloc_howto_struct alt_howto;
13301 r_type = ELF64_R_TYPE (rel->r_info);
13302 r_symndx = ELF64_R_SYM (rel->r_info);
13304 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13305 symbol of the previous ADDR64 reloc. The symbol gives us the
13306 proper TOC base to use. */
13307 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13309 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13311 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13317 unresolved_reloc = FALSE;
13320 if (r_symndx < symtab_hdr->sh_info)
13322 /* It's a local symbol. */
13323 struct _opd_sec_data *opd;
13325 sym = local_syms + r_symndx;
13326 sec = local_sections[r_symndx];
13327 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13328 sym_type = ELF64_ST_TYPE (sym->st_info);
13329 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13330 opd = get_opd_info (sec);
13331 if (opd != NULL && opd->adjust != NULL)
13333 long adjust = opd->adjust[OPD_NDX (sym->st_value
13339 /* If this is a relocation against the opd section sym
13340 and we have edited .opd, adjust the reloc addend so
13341 that ld -r and ld --emit-relocs output is correct.
13342 If it is a reloc against some other .opd symbol,
13343 then the symbol value will be adjusted later. */
13344 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13345 rel->r_addend += adjust;
13347 relocation += adjust;
13353 bfd_boolean ignored;
13355 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13356 r_symndx, symtab_hdr, sym_hashes,
13357 h_elf, sec, relocation,
13358 unresolved_reloc, warned, ignored);
13359 sym_name = h_elf->root.root.string;
13360 sym_type = h_elf->type;
13362 && sec->owner == output_bfd
13363 && strcmp (sec->name, ".opd") == 0)
13365 /* This is a symbol defined in a linker script. All
13366 such are defined in output sections, even those
13367 defined by simple assignment from a symbol defined in
13368 an input section. Transfer the symbol to an
13369 appropriate input .opd section, so that a branch to
13370 this symbol will be mapped to the location specified
13371 by the opd entry. */
13372 struct bfd_link_order *lo;
13373 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13374 if (lo->type == bfd_indirect_link_order)
13376 asection *isec = lo->u.indirect.section;
13377 if (h_elf->root.u.def.value >= isec->output_offset
13378 && h_elf->root.u.def.value < (isec->output_offset
13381 h_elf->root.u.def.value -= isec->output_offset;
13382 h_elf->root.u.def.section = isec;
13389 h = (struct ppc_link_hash_entry *) h_elf;
13391 if (sec != NULL && discarded_section (sec))
13393 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13394 input_bfd, input_section,
13395 contents + rel->r_offset);
13396 wrel->r_offset = rel->r_offset;
13398 wrel->r_addend = 0;
13400 /* For ld -r, remove relocations in debug sections against
13401 sections defined in discarded sections. Not done for
13402 non-debug to preserve relocs in .eh_frame which the
13403 eh_frame editing code expects to be present. */
13404 if (bfd_link_relocatable (info)
13405 && (input_section->flags & SEC_DEBUGGING))
13411 if (bfd_link_relocatable (info))
13414 if (h != NULL && &h->elf == htab->elf.hgot)
13416 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13417 sec = bfd_abs_section_ptr;
13418 unresolved_reloc = FALSE;
13421 /* TLS optimizations. Replace instruction sequences and relocs
13422 based on information we collected in tls_optimize. We edit
13423 RELOCS so that --emit-relocs will output something sensible
13424 for the final instruction stream. */
13429 tls_mask = h->tls_mask;
13430 else if (local_got_ents != NULL)
13432 struct plt_entry **local_plt = (struct plt_entry **)
13433 (local_got_ents + symtab_hdr->sh_info);
13434 unsigned char *lgot_masks = (unsigned char *)
13435 (local_plt + symtab_hdr->sh_info);
13436 tls_mask = lgot_masks[r_symndx];
13439 && (r_type == R_PPC64_TLS
13440 || r_type == R_PPC64_TLSGD
13441 || r_type == R_PPC64_TLSLD))
13443 /* Check for toc tls entries. */
13444 unsigned char *toc_tls;
13446 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13447 &local_syms, rel, input_bfd))
13451 tls_mask = *toc_tls;
13454 /* Check that tls relocs are used with tls syms, and non-tls
13455 relocs are used with non-tls syms. */
13456 if (r_symndx != STN_UNDEF
13457 && r_type != R_PPC64_NONE
13459 || h->elf.root.type == bfd_link_hash_defined
13460 || h->elf.root.type == bfd_link_hash_defweak)
13461 && (IS_PPC64_TLS_RELOC (r_type)
13462 != (sym_type == STT_TLS
13463 || (sym_type == STT_SECTION
13464 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13467 && (r_type == R_PPC64_TLS
13468 || r_type == R_PPC64_TLSGD
13469 || r_type == R_PPC64_TLSLD))
13470 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13473 info->callbacks->einfo
13474 (!IS_PPC64_TLS_RELOC (r_type)
13475 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13476 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13477 input_bfd, input_section, rel->r_offset,
13478 ppc64_elf_howto_table[r_type]->name,
13482 /* Ensure reloc mapping code below stays sane. */
13483 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13484 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13485 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13486 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13487 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13488 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13489 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13490 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13491 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13492 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13500 case R_PPC64_LO_DS_OPT:
13501 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13502 if ((insn & (0x3f << 26)) != 58u << 26)
13504 insn += (14u << 26) - (58u << 26);
13505 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13506 r_type = R_PPC64_TOC16_LO;
13507 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13510 case R_PPC64_TOC16:
13511 case R_PPC64_TOC16_LO:
13512 case R_PPC64_TOC16_DS:
13513 case R_PPC64_TOC16_LO_DS:
13515 /* Check for toc tls entries. */
13516 unsigned char *toc_tls;
13519 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13520 &local_syms, rel, input_bfd);
13526 tls_mask = *toc_tls;
13527 if (r_type == R_PPC64_TOC16_DS
13528 || r_type == R_PPC64_TOC16_LO_DS)
13531 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13536 /* If we found a GD reloc pair, then we might be
13537 doing a GD->IE transition. */
13540 tls_gd = TLS_TPRELGD;
13541 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13544 else if (retval == 3)
13546 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13554 case R_PPC64_GOT_TPREL16_HI:
13555 case R_PPC64_GOT_TPREL16_HA:
13557 && (tls_mask & TLS_TPREL) == 0)
13559 rel->r_offset -= d_offset;
13560 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13561 r_type = R_PPC64_NONE;
13562 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13566 case R_PPC64_GOT_TPREL16_DS:
13567 case R_PPC64_GOT_TPREL16_LO_DS:
13569 && (tls_mask & TLS_TPREL) == 0)
13572 insn = bfd_get_32 (output_bfd,
13573 contents + rel->r_offset - d_offset);
13575 insn |= 0x3c0d0000; /* addis 0,13,0 */
13576 bfd_put_32 (output_bfd, insn,
13577 contents + rel->r_offset - d_offset);
13578 r_type = R_PPC64_TPREL16_HA;
13579 if (toc_symndx != 0)
13581 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13582 rel->r_addend = toc_addend;
13583 /* We changed the symbol. Start over in order to
13584 get h, sym, sec etc. right. */
13588 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13594 && (tls_mask & TLS_TPREL) == 0)
13596 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13597 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13600 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13601 /* Was PPC64_TLS which sits on insn boundary, now
13602 PPC64_TPREL16_LO which is at low-order half-word. */
13603 rel->r_offset += d_offset;
13604 r_type = R_PPC64_TPREL16_LO;
13605 if (toc_symndx != 0)
13607 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13608 rel->r_addend = toc_addend;
13609 /* We changed the symbol. Start over in order to
13610 get h, sym, sec etc. right. */
13614 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13618 case R_PPC64_GOT_TLSGD16_HI:
13619 case R_PPC64_GOT_TLSGD16_HA:
13620 tls_gd = TLS_TPRELGD;
13621 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13625 case R_PPC64_GOT_TLSLD16_HI:
13626 case R_PPC64_GOT_TLSLD16_HA:
13627 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13630 if ((tls_mask & tls_gd) != 0)
13631 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13632 + R_PPC64_GOT_TPREL16_DS);
13635 rel->r_offset -= d_offset;
13636 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13637 r_type = R_PPC64_NONE;
13639 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13643 case R_PPC64_GOT_TLSGD16:
13644 case R_PPC64_GOT_TLSGD16_LO:
13645 tls_gd = TLS_TPRELGD;
13646 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13650 case R_PPC64_GOT_TLSLD16:
13651 case R_PPC64_GOT_TLSLD16_LO:
13652 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13654 unsigned int insn1, insn2, insn3;
13658 offset = (bfd_vma) -1;
13659 /* If not using the newer R_PPC64_TLSGD/LD to mark
13660 __tls_get_addr calls, we must trust that the call
13661 stays with its arg setup insns, ie. that the next
13662 reloc is the __tls_get_addr call associated with
13663 the current reloc. Edit both insns. */
13664 if (input_section->has_tls_get_addr_call
13665 && rel + 1 < relend
13666 && branch_reloc_hash_match (input_bfd, rel + 1,
13667 htab->tls_get_addr,
13668 htab->tls_get_addr_fd))
13669 offset = rel[1].r_offset;
13670 /* We read the low GOT_TLS (or TOC16) insn because we
13671 need to keep the destination reg. It may be
13672 something other than the usual r3, and moved to r3
13673 before the call by intervening code. */
13674 insn1 = bfd_get_32 (output_bfd,
13675 contents + rel->r_offset - d_offset);
13676 if ((tls_mask & tls_gd) != 0)
13679 insn1 &= (0x1f << 21) | (0x1f << 16);
13680 insn1 |= 58 << 26; /* ld */
13681 insn2 = 0x7c636a14; /* add 3,3,13 */
13682 if (offset != (bfd_vma) -1)
13683 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13684 if ((tls_mask & TLS_EXPLICIT) == 0)
13685 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13686 + R_PPC64_GOT_TPREL16_DS);
13688 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13689 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13694 insn1 &= 0x1f << 21;
13695 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13696 insn2 = 0x38630000; /* addi 3,3,0 */
13699 /* Was an LD reloc. */
13701 sec = local_sections[toc_symndx];
13703 r_symndx < symtab_hdr->sh_info;
13705 if (local_sections[r_symndx] == sec)
13707 if (r_symndx >= symtab_hdr->sh_info)
13708 r_symndx = STN_UNDEF;
13709 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13710 if (r_symndx != STN_UNDEF)
13711 rel->r_addend -= (local_syms[r_symndx].st_value
13712 + sec->output_offset
13713 + sec->output_section->vma);
13715 else if (toc_symndx != 0)
13717 r_symndx = toc_symndx;
13718 rel->r_addend = toc_addend;
13720 r_type = R_PPC64_TPREL16_HA;
13721 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13722 if (offset != (bfd_vma) -1)
13724 rel[1].r_info = ELF64_R_INFO (r_symndx,
13725 R_PPC64_TPREL16_LO);
13726 rel[1].r_offset = offset + d_offset;
13727 rel[1].r_addend = rel->r_addend;
13730 bfd_put_32 (output_bfd, insn1,
13731 contents + rel->r_offset - d_offset);
13732 if (offset != (bfd_vma) -1)
13734 insn3 = bfd_get_32 (output_bfd,
13735 contents + offset + 4);
13737 || insn3 == CROR_151515 || insn3 == CROR_313131)
13739 rel[1].r_offset += 4;
13740 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13743 bfd_put_32 (output_bfd, insn2, contents + offset);
13745 if ((tls_mask & tls_gd) == 0
13746 && (tls_gd == 0 || toc_symndx != 0))
13748 /* We changed the symbol. Start over in order
13749 to get h, sym, sec etc. right. */
13755 case R_PPC64_TLSGD:
13756 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13758 unsigned int insn2, insn3;
13759 bfd_vma offset = rel->r_offset;
13761 if ((tls_mask & TLS_TPRELGD) != 0)
13764 r_type = R_PPC64_NONE;
13765 insn2 = 0x7c636a14; /* add 3,3,13 */
13770 if (toc_symndx != 0)
13772 r_symndx = toc_symndx;
13773 rel->r_addend = toc_addend;
13775 r_type = R_PPC64_TPREL16_LO;
13776 rel->r_offset = offset + d_offset;
13777 insn2 = 0x38630000; /* addi 3,3,0 */
13779 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13780 /* Zap the reloc on the _tls_get_addr call too. */
13781 BFD_ASSERT (offset == rel[1].r_offset);
13782 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13783 insn3 = bfd_get_32 (output_bfd,
13784 contents + offset + 4);
13786 || insn3 == CROR_151515 || insn3 == CROR_313131)
13788 rel->r_offset += 4;
13789 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13792 bfd_put_32 (output_bfd, insn2, contents + offset);
13793 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13798 case R_PPC64_TLSLD:
13799 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13801 unsigned int insn2, insn3;
13802 bfd_vma offset = rel->r_offset;
13805 sec = local_sections[toc_symndx];
13807 r_symndx < symtab_hdr->sh_info;
13809 if (local_sections[r_symndx] == sec)
13811 if (r_symndx >= symtab_hdr->sh_info)
13812 r_symndx = STN_UNDEF;
13813 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13814 if (r_symndx != STN_UNDEF)
13815 rel->r_addend -= (local_syms[r_symndx].st_value
13816 + sec->output_offset
13817 + sec->output_section->vma);
13819 r_type = R_PPC64_TPREL16_LO;
13820 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13821 rel->r_offset = offset + d_offset;
13822 /* Zap the reloc on the _tls_get_addr call too. */
13823 BFD_ASSERT (offset == rel[1].r_offset);
13824 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13825 insn2 = 0x38630000; /* addi 3,3,0 */
13826 insn3 = bfd_get_32 (output_bfd,
13827 contents + offset + 4);
13829 || insn3 == CROR_151515 || insn3 == CROR_313131)
13831 rel->r_offset += 4;
13832 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13835 bfd_put_32 (output_bfd, insn2, contents + offset);
13840 case R_PPC64_DTPMOD64:
13841 if (rel + 1 < relend
13842 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13843 && rel[1].r_offset == rel->r_offset + 8)
13845 if ((tls_mask & TLS_GD) == 0)
13847 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13848 if ((tls_mask & TLS_TPRELGD) != 0)
13849 r_type = R_PPC64_TPREL64;
13852 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13853 r_type = R_PPC64_NONE;
13855 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13860 if ((tls_mask & TLS_LD) == 0)
13862 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13863 r_type = R_PPC64_NONE;
13864 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13869 case R_PPC64_TPREL64:
13870 if ((tls_mask & TLS_TPREL) == 0)
13872 r_type = R_PPC64_NONE;
13873 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13877 case R_PPC64_ENTRY:
13878 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13879 if (!bfd_link_pic (info)
13880 && !info->traditional_format
13881 && relocation + 0x80008000 <= 0xffffffff)
13883 unsigned int insn1, insn2;
13885 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13886 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13887 if ((insn1 & ~0xfffc) == LD_R2_0R12
13888 && insn2 == ADD_R2_R2_R12)
13890 bfd_put_32 (output_bfd,
13891 LIS_R2 + PPC_HA (relocation),
13892 contents + rel->r_offset);
13893 bfd_put_32 (output_bfd,
13894 ADDI_R2_R2 + PPC_LO (relocation),
13895 contents + rel->r_offset + 4);
13900 relocation -= (rel->r_offset
13901 + input_section->output_offset
13902 + input_section->output_section->vma);
13903 if (relocation + 0x80008000 <= 0xffffffff)
13905 unsigned int insn1, insn2;
13907 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13908 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13909 if ((insn1 & ~0xfffc) == LD_R2_0R12
13910 && insn2 == ADD_R2_R2_R12)
13912 bfd_put_32 (output_bfd,
13913 ADDIS_R2_R12 + PPC_HA (relocation),
13914 contents + rel->r_offset);
13915 bfd_put_32 (output_bfd,
13916 ADDI_R2_R2 + PPC_LO (relocation),
13917 contents + rel->r_offset + 4);
13923 case R_PPC64_REL16_HA:
13924 /* If we are generating a non-PIC executable, edit
13925 . 0: addis 2,12,.TOC.-0b@ha
13926 . addi 2,2,.TOC.-0b@l
13927 used by ELFv2 global entry points to set up r2, to
13930 if .TOC. is in range. */
13931 if (!bfd_link_pic (info)
13932 && !info->traditional_format
13934 && rel->r_addend == d_offset
13935 && h != NULL && &h->elf == htab->elf.hgot
13936 && rel + 1 < relend
13937 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13938 && rel[1].r_offset == rel->r_offset + 4
13939 && rel[1].r_addend == rel->r_addend + 4
13940 && relocation + 0x80008000 <= 0xffffffff)
13942 unsigned int insn1, insn2;
13943 bfd_vma offset = rel->r_offset - d_offset;
13944 insn1 = bfd_get_32 (output_bfd, contents + offset);
13945 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13946 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
13947 && (insn2 & 0xffff0000) == ADDI_R2_R2)
13949 r_type = R_PPC64_ADDR16_HA;
13950 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13951 rel->r_addend -= d_offset;
13952 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13953 rel[1].r_addend -= d_offset + 4;
13954 bfd_put_32 (output_bfd, LIS_R2, contents + offset);
13960 /* Handle other relocations that tweak non-addend part of insn. */
13962 max_br_offset = 1 << 25;
13963 addend = rel->r_addend;
13964 reloc_dest = DEST_NORMAL;
13970 case R_PPC64_TOCSAVE:
13971 if (relocation + addend == (rel->r_offset
13972 + input_section->output_offset
13973 + input_section->output_section->vma)
13974 && tocsave_find (htab, NO_INSERT,
13975 &local_syms, rel, input_bfd))
13977 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13979 || insn == CROR_151515 || insn == CROR_313131)
13980 bfd_put_32 (input_bfd,
13981 STD_R2_0R1 + STK_TOC (htab),
13982 contents + rel->r_offset);
13986 /* Branch taken prediction relocations. */
13987 case R_PPC64_ADDR14_BRTAKEN:
13988 case R_PPC64_REL14_BRTAKEN:
13989 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13992 /* Branch not taken prediction relocations. */
13993 case R_PPC64_ADDR14_BRNTAKEN:
13994 case R_PPC64_REL14_BRNTAKEN:
13995 insn |= bfd_get_32 (output_bfd,
13996 contents + rel->r_offset) & ~(0x01 << 21);
13999 case R_PPC64_REL14:
14000 max_br_offset = 1 << 15;
14003 case R_PPC64_REL24:
14004 /* Calls to functions with a different TOC, such as calls to
14005 shared objects, need to alter the TOC pointer. This is
14006 done using a linkage stub. A REL24 branching to these
14007 linkage stubs needs to be followed by a nop, as the nop
14008 will be replaced with an instruction to restore the TOC
14013 && h->oh->is_func_descriptor)
14014 fdh = ppc_follow_link (h->oh);
14015 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14017 if (stub_entry != NULL
14018 && (stub_entry->stub_type == ppc_stub_plt_call
14019 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14020 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14021 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14023 bfd_boolean can_plt_call = FALSE;
14025 /* All of these stubs will modify r2, so there must be a
14026 branch and link followed by a nop. The nop is
14027 replaced by an insn to restore r2. */
14028 if (rel->r_offset + 8 <= input_section->size)
14032 br = bfd_get_32 (input_bfd,
14033 contents + rel->r_offset);
14038 nop = bfd_get_32 (input_bfd,
14039 contents + rel->r_offset + 4);
14041 || nop == CROR_151515 || nop == CROR_313131)
14044 && (h == htab->tls_get_addr_fd
14045 || h == htab->tls_get_addr)
14046 && htab->params->tls_get_addr_opt)
14048 /* Special stub used, leave nop alone. */
14051 bfd_put_32 (input_bfd,
14052 LD_R2_0R1 + STK_TOC (htab),
14053 contents + rel->r_offset + 4);
14054 can_plt_call = TRUE;
14059 if (!can_plt_call && h != NULL)
14061 const char *name = h->elf.root.root.string;
14066 if (strncmp (name, "__libc_start_main", 17) == 0
14067 && (name[17] == 0 || name[17] == '@'))
14069 /* Allow crt1 branch to go via a toc adjusting
14070 stub. Other calls that never return could do
14071 the same, if we could detect such. */
14072 can_plt_call = TRUE;
14078 /* g++ as of 20130507 emits self-calls without a
14079 following nop. This is arguably wrong since we
14080 have conflicting information. On the one hand a
14081 global symbol and on the other a local call
14082 sequence, but don't error for this special case.
14083 It isn't possible to cheaply verify we have
14084 exactly such a call. Allow all calls to the same
14086 asection *code_sec = sec;
14088 if (get_opd_info (sec) != NULL)
14090 bfd_vma off = (relocation + addend
14091 - sec->output_section->vma
14092 - sec->output_offset);
14094 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14096 if (code_sec == input_section)
14097 can_plt_call = TRUE;
14102 if (stub_entry->stub_type == ppc_stub_plt_call
14103 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14104 info->callbacks->einfo
14105 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14106 "recompile with -fPIC\n"),
14107 input_bfd, input_section, rel->r_offset, sym_name);
14109 info->callbacks->einfo
14110 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14111 "(-mcmodel=small toc adjust stub)\n"),
14112 input_bfd, input_section, rel->r_offset, sym_name);
14114 bfd_set_error (bfd_error_bad_value);
14119 && (stub_entry->stub_type == ppc_stub_plt_call
14120 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14121 unresolved_reloc = FALSE;
14124 if ((stub_entry == NULL
14125 || stub_entry->stub_type == ppc_stub_long_branch
14126 || stub_entry->stub_type == ppc_stub_plt_branch)
14127 && get_opd_info (sec) != NULL)
14129 /* The branch destination is the value of the opd entry. */
14130 bfd_vma off = (relocation + addend
14131 - sec->output_section->vma
14132 - sec->output_offset);
14133 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14134 if (dest != (bfd_vma) -1)
14138 reloc_dest = DEST_OPD;
14142 /* If the branch is out of reach we ought to have a long
14144 from = (rel->r_offset
14145 + input_section->output_offset
14146 + input_section->output_section->vma);
14148 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14152 if (stub_entry != NULL
14153 && (stub_entry->stub_type == ppc_stub_long_branch
14154 || stub_entry->stub_type == ppc_stub_plt_branch)
14155 && (r_type == R_PPC64_ADDR14_BRTAKEN
14156 || r_type == R_PPC64_ADDR14_BRNTAKEN
14157 || (relocation + addend - from + max_br_offset
14158 < 2 * max_br_offset)))
14159 /* Don't use the stub if this branch is in range. */
14162 if (stub_entry != NULL)
14164 /* Munge up the value and addend so that we call the stub
14165 rather than the procedure directly. */
14166 asection *stub_sec = stub_entry->group->stub_sec;
14168 if (stub_entry->stub_type == ppc_stub_save_res)
14169 relocation += (stub_sec->output_offset
14170 + stub_sec->output_section->vma
14171 + stub_sec->size - htab->sfpr->size
14172 - htab->sfpr->output_offset
14173 - htab->sfpr->output_section->vma);
14175 relocation = (stub_entry->stub_offset
14176 + stub_sec->output_offset
14177 + stub_sec->output_section->vma);
14179 reloc_dest = DEST_STUB;
14181 if ((stub_entry->stub_type == ppc_stub_plt_call
14182 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14183 && (ALWAYS_EMIT_R2SAVE
14184 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14185 && rel + 1 < relend
14186 && rel[1].r_offset == rel->r_offset + 4
14187 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14195 /* Set 'a' bit. This is 0b00010 in BO field for branch
14196 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14197 for branch on CTR insns (BO == 1a00t or 1a01t). */
14198 if ((insn & (0x14 << 21)) == (0x04 << 21))
14199 insn |= 0x02 << 21;
14200 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14201 insn |= 0x08 << 21;
14207 /* Invert 'y' bit if not the default. */
14208 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14209 insn ^= 0x01 << 21;
14212 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
14215 /* NOP out calls to undefined weak functions.
14216 We can thus call a weak function without first
14217 checking whether the function is defined. */
14219 && h->elf.root.type == bfd_link_hash_undefweak
14220 && h->elf.dynindx == -1
14221 && r_type == R_PPC64_REL24
14225 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
14231 /* Set `addend'. */
14236 info->callbacks->einfo
14237 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14238 input_bfd, (int) r_type, sym_name);
14240 bfd_set_error (bfd_error_bad_value);
14246 case R_PPC64_TLSGD:
14247 case R_PPC64_TLSLD:
14248 case R_PPC64_TOCSAVE:
14249 case R_PPC64_GNU_VTINHERIT:
14250 case R_PPC64_GNU_VTENTRY:
14251 case R_PPC64_ENTRY:
14254 /* GOT16 relocations. Like an ADDR16 using the symbol's
14255 address in the GOT as relocation value instead of the
14256 symbol's value itself. Also, create a GOT entry for the
14257 symbol and put the symbol value there. */
14258 case R_PPC64_GOT_TLSGD16:
14259 case R_PPC64_GOT_TLSGD16_LO:
14260 case R_PPC64_GOT_TLSGD16_HI:
14261 case R_PPC64_GOT_TLSGD16_HA:
14262 tls_type = TLS_TLS | TLS_GD;
14265 case R_PPC64_GOT_TLSLD16:
14266 case R_PPC64_GOT_TLSLD16_LO:
14267 case R_PPC64_GOT_TLSLD16_HI:
14268 case R_PPC64_GOT_TLSLD16_HA:
14269 tls_type = TLS_TLS | TLS_LD;
14272 case R_PPC64_GOT_TPREL16_DS:
14273 case R_PPC64_GOT_TPREL16_LO_DS:
14274 case R_PPC64_GOT_TPREL16_HI:
14275 case R_PPC64_GOT_TPREL16_HA:
14276 tls_type = TLS_TLS | TLS_TPREL;
14279 case R_PPC64_GOT_DTPREL16_DS:
14280 case R_PPC64_GOT_DTPREL16_LO_DS:
14281 case R_PPC64_GOT_DTPREL16_HI:
14282 case R_PPC64_GOT_DTPREL16_HA:
14283 tls_type = TLS_TLS | TLS_DTPREL;
14286 case R_PPC64_GOT16:
14287 case R_PPC64_GOT16_LO:
14288 case R_PPC64_GOT16_HI:
14289 case R_PPC64_GOT16_HA:
14290 case R_PPC64_GOT16_DS:
14291 case R_PPC64_GOT16_LO_DS:
14294 /* Relocation is to the entry for this symbol in the global
14299 unsigned long indx = 0;
14300 struct got_entry *ent;
14302 if (tls_type == (TLS_TLS | TLS_LD)
14304 || !h->elf.def_dynamic))
14305 ent = ppc64_tlsld_got (input_bfd);
14311 bfd_boolean dyn = htab->elf.dynamic_sections_created;
14312 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info),
14314 || (bfd_link_pic (info)
14315 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
14316 /* This is actually a static link, or it is a
14317 -Bsymbolic link and the symbol is defined
14318 locally, or the symbol was forced to be local
14319 because of a version file. */
14323 BFD_ASSERT (h->elf.dynindx != -1);
14324 indx = h->elf.dynindx;
14325 unresolved_reloc = FALSE;
14327 ent = h->elf.got.glist;
14331 if (local_got_ents == NULL)
14333 ent = local_got_ents[r_symndx];
14336 for (; ent != NULL; ent = ent->next)
14337 if (ent->addend == orig_rel.r_addend
14338 && ent->owner == input_bfd
14339 && ent->tls_type == tls_type)
14345 if (ent->is_indirect)
14346 ent = ent->got.ent;
14347 offp = &ent->got.offset;
14348 got = ppc64_elf_tdata (ent->owner)->got;
14352 /* The offset must always be a multiple of 8. We use the
14353 least significant bit to record whether we have already
14354 processed this entry. */
14356 if ((off & 1) != 0)
14360 /* Generate relocs for the dynamic linker, except in
14361 the case of TLSLD where we'll use one entry per
14369 ? h->elf.type == STT_GNU_IFUNC
14370 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14372 relgot = htab->elf.irelplt;
14373 else if ((bfd_link_pic (info) || indx != 0)
14375 || (tls_type == (TLS_TLS | TLS_LD)
14376 && !h->elf.def_dynamic)
14377 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14378 || h->elf.root.type != bfd_link_hash_undefweak))
14379 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14380 if (relgot != NULL)
14382 outrel.r_offset = (got->output_section->vma
14383 + got->output_offset
14385 outrel.r_addend = addend;
14386 if (tls_type & (TLS_LD | TLS_GD))
14388 outrel.r_addend = 0;
14389 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14390 if (tls_type == (TLS_TLS | TLS_GD))
14392 loc = relgot->contents;
14393 loc += (relgot->reloc_count++
14394 * sizeof (Elf64_External_Rela));
14395 bfd_elf64_swap_reloca_out (output_bfd,
14397 outrel.r_offset += 8;
14398 outrel.r_addend = addend;
14400 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14403 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14404 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14405 else if (tls_type == (TLS_TLS | TLS_TPREL))
14406 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14407 else if (indx != 0)
14408 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14412 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14414 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14416 /* Write the .got section contents for the sake
14418 loc = got->contents + off;
14419 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14423 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14425 outrel.r_addend += relocation;
14426 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14428 if (htab->elf.tls_sec == NULL)
14429 outrel.r_addend = 0;
14431 outrel.r_addend -= htab->elf.tls_sec->vma;
14434 loc = relgot->contents;
14435 loc += (relgot->reloc_count++
14436 * sizeof (Elf64_External_Rela));
14437 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14440 /* Init the .got section contents here if we're not
14441 emitting a reloc. */
14444 relocation += addend;
14445 if (tls_type == (TLS_TLS | TLS_LD))
14447 else if (tls_type != 0)
14449 if (htab->elf.tls_sec == NULL)
14453 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14454 if (tls_type == (TLS_TLS | TLS_TPREL))
14455 relocation += DTP_OFFSET - TP_OFFSET;
14458 if (tls_type == (TLS_TLS | TLS_GD))
14460 bfd_put_64 (output_bfd, relocation,
14461 got->contents + off + 8);
14466 bfd_put_64 (output_bfd, relocation,
14467 got->contents + off);
14471 if (off >= (bfd_vma) -2)
14474 relocation = got->output_section->vma + got->output_offset + off;
14475 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14479 case R_PPC64_PLT16_HA:
14480 case R_PPC64_PLT16_HI:
14481 case R_PPC64_PLT16_LO:
14482 case R_PPC64_PLT32:
14483 case R_PPC64_PLT64:
14484 /* Relocation is to the entry for this symbol in the
14485 procedure linkage table. */
14487 struct plt_entry **plt_list = NULL;
14489 plt_list = &h->elf.plt.plist;
14490 else if (local_got_ents != NULL)
14492 struct plt_entry **local_plt = (struct plt_entry **)
14493 (local_got_ents + symtab_hdr->sh_info);
14494 unsigned char *local_got_tls_masks = (unsigned char *)
14495 (local_plt + symtab_hdr->sh_info);
14496 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14497 plt_list = local_plt + r_symndx;
14501 struct plt_entry *ent;
14503 for (ent = *plt_list; ent != NULL; ent = ent->next)
14504 if (ent->plt.offset != (bfd_vma) -1
14505 && ent->addend == orig_rel.r_addend)
14509 plt = htab->elf.splt;
14510 if (!htab->elf.dynamic_sections_created
14512 || h->elf.dynindx == -1)
14513 plt = htab->elf.iplt;
14514 relocation = (plt->output_section->vma
14515 + plt->output_offset
14516 + ent->plt.offset);
14518 unresolved_reloc = FALSE;
14526 /* Relocation value is TOC base. */
14527 relocation = TOCstart;
14528 if (r_symndx == STN_UNDEF)
14529 relocation += htab->sec_info[input_section->id].toc_off;
14530 else if (unresolved_reloc)
14532 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14533 relocation += htab->sec_info[sec->id].toc_off;
14535 unresolved_reloc = TRUE;
14538 /* TOC16 relocs. We want the offset relative to the TOC base,
14539 which is the address of the start of the TOC plus 0x8000.
14540 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14542 case R_PPC64_TOC16:
14543 case R_PPC64_TOC16_LO:
14544 case R_PPC64_TOC16_HI:
14545 case R_PPC64_TOC16_DS:
14546 case R_PPC64_TOC16_LO_DS:
14547 case R_PPC64_TOC16_HA:
14548 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14551 /* Relocate against the beginning of the section. */
14552 case R_PPC64_SECTOFF:
14553 case R_PPC64_SECTOFF_LO:
14554 case R_PPC64_SECTOFF_HI:
14555 case R_PPC64_SECTOFF_DS:
14556 case R_PPC64_SECTOFF_LO_DS:
14557 case R_PPC64_SECTOFF_HA:
14559 addend -= sec->output_section->vma;
14562 case R_PPC64_REL16:
14563 case R_PPC64_REL16_LO:
14564 case R_PPC64_REL16_HI:
14565 case R_PPC64_REL16_HA:
14566 case R_PPC64_REL16DX_HA:
14569 case R_PPC64_REL14:
14570 case R_PPC64_REL14_BRNTAKEN:
14571 case R_PPC64_REL14_BRTAKEN:
14572 case R_PPC64_REL24:
14575 case R_PPC64_TPREL16:
14576 case R_PPC64_TPREL16_LO:
14577 case R_PPC64_TPREL16_HI:
14578 case R_PPC64_TPREL16_HA:
14579 case R_PPC64_TPREL16_DS:
14580 case R_PPC64_TPREL16_LO_DS:
14581 case R_PPC64_TPREL16_HIGH:
14582 case R_PPC64_TPREL16_HIGHA:
14583 case R_PPC64_TPREL16_HIGHER:
14584 case R_PPC64_TPREL16_HIGHERA:
14585 case R_PPC64_TPREL16_HIGHEST:
14586 case R_PPC64_TPREL16_HIGHESTA:
14588 && h->elf.root.type == bfd_link_hash_undefweak
14589 && h->elf.dynindx == -1)
14591 /* Make this relocation against an undefined weak symbol
14592 resolve to zero. This is really just a tweak, since
14593 code using weak externs ought to check that they are
14594 defined before using them. */
14595 bfd_byte *p = contents + rel->r_offset - d_offset;
14597 insn = bfd_get_32 (output_bfd, p);
14598 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14600 bfd_put_32 (output_bfd, insn, p);
14603 if (htab->elf.tls_sec != NULL)
14604 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14605 if (bfd_link_pic (info))
14606 /* The TPREL16 relocs shouldn't really be used in shared
14607 libs as they will result in DT_TEXTREL being set, but
14608 support them anyway. */
14612 case R_PPC64_DTPREL16:
14613 case R_PPC64_DTPREL16_LO:
14614 case R_PPC64_DTPREL16_HI:
14615 case R_PPC64_DTPREL16_HA:
14616 case R_PPC64_DTPREL16_DS:
14617 case R_PPC64_DTPREL16_LO_DS:
14618 case R_PPC64_DTPREL16_HIGH:
14619 case R_PPC64_DTPREL16_HIGHA:
14620 case R_PPC64_DTPREL16_HIGHER:
14621 case R_PPC64_DTPREL16_HIGHERA:
14622 case R_PPC64_DTPREL16_HIGHEST:
14623 case R_PPC64_DTPREL16_HIGHESTA:
14624 if (htab->elf.tls_sec != NULL)
14625 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14628 case R_PPC64_ADDR64_LOCAL:
14629 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14634 case R_PPC64_DTPMOD64:
14639 case R_PPC64_TPREL64:
14640 if (htab->elf.tls_sec != NULL)
14641 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14644 case R_PPC64_DTPREL64:
14645 if (htab->elf.tls_sec != NULL)
14646 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14649 /* Relocations that may need to be propagated if this is a
14651 case R_PPC64_REL30:
14652 case R_PPC64_REL32:
14653 case R_PPC64_REL64:
14654 case R_PPC64_ADDR14:
14655 case R_PPC64_ADDR14_BRNTAKEN:
14656 case R_PPC64_ADDR14_BRTAKEN:
14657 case R_PPC64_ADDR16:
14658 case R_PPC64_ADDR16_DS:
14659 case R_PPC64_ADDR16_HA:
14660 case R_PPC64_ADDR16_HI:
14661 case R_PPC64_ADDR16_HIGH:
14662 case R_PPC64_ADDR16_HIGHA:
14663 case R_PPC64_ADDR16_HIGHER:
14664 case R_PPC64_ADDR16_HIGHERA:
14665 case R_PPC64_ADDR16_HIGHEST:
14666 case R_PPC64_ADDR16_HIGHESTA:
14667 case R_PPC64_ADDR16_LO:
14668 case R_PPC64_ADDR16_LO_DS:
14669 case R_PPC64_ADDR24:
14670 case R_PPC64_ADDR32:
14671 case R_PPC64_ADDR64:
14672 case R_PPC64_UADDR16:
14673 case R_PPC64_UADDR32:
14674 case R_PPC64_UADDR64:
14676 if ((input_section->flags & SEC_ALLOC) == 0)
14679 if (NO_OPD_RELOCS && is_opd)
14682 if ((bfd_link_pic (info)
14684 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14685 || h->elf.root.type != bfd_link_hash_undefweak)
14686 && (must_be_dyn_reloc (info, r_type)
14687 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14688 || (ELIMINATE_COPY_RELOCS
14689 && !bfd_link_pic (info)
14691 && h->elf.dynindx != -1
14692 && !h->elf.non_got_ref
14693 && !h->elf.def_regular)
14694 || (!bfd_link_pic (info)
14696 ? h->elf.type == STT_GNU_IFUNC
14697 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14699 bfd_boolean skip, relocate;
14703 /* When generating a dynamic object, these relocations
14704 are copied into the output file to be resolved at run
14710 out_off = _bfd_elf_section_offset (output_bfd, info,
14711 input_section, rel->r_offset);
14712 if (out_off == (bfd_vma) -1)
14714 else if (out_off == (bfd_vma) -2)
14715 skip = TRUE, relocate = TRUE;
14716 out_off += (input_section->output_section->vma
14717 + input_section->output_offset);
14718 outrel.r_offset = out_off;
14719 outrel.r_addend = rel->r_addend;
14721 /* Optimize unaligned reloc use. */
14722 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14723 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14724 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14725 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14726 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14727 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14728 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14729 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14730 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14733 memset (&outrel, 0, sizeof outrel);
14734 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14736 && r_type != R_PPC64_TOC)
14738 BFD_ASSERT (h->elf.dynindx != -1);
14739 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14743 /* This symbol is local, or marked to become local,
14744 or this is an opd section reloc which must point
14745 at a local function. */
14746 outrel.r_addend += relocation;
14747 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14749 if (is_opd && h != NULL)
14751 /* Lie about opd entries. This case occurs
14752 when building shared libraries and we
14753 reference a function in another shared
14754 lib. The same thing happens for a weak
14755 definition in an application that's
14756 overridden by a strong definition in a
14757 shared lib. (I believe this is a generic
14758 bug in binutils handling of weak syms.)
14759 In these cases we won't use the opd
14760 entry in this lib. */
14761 unresolved_reloc = FALSE;
14764 && r_type == R_PPC64_ADDR64
14766 ? h->elf.type == STT_GNU_IFUNC
14767 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14768 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14771 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14773 /* We need to relocate .opd contents for ld.so.
14774 Prelink also wants simple and consistent rules
14775 for relocs. This make all RELATIVE relocs have
14776 *r_offset equal to r_addend. */
14785 ? h->elf.type == STT_GNU_IFUNC
14786 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14788 info->callbacks->einfo
14789 (_("%P: %H: %s for indirect "
14790 "function `%T' unsupported\n"),
14791 input_bfd, input_section, rel->r_offset,
14792 ppc64_elf_howto_table[r_type]->name,
14796 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14798 else if (sec == NULL || sec->owner == NULL)
14800 bfd_set_error (bfd_error_bad_value);
14807 osec = sec->output_section;
14808 indx = elf_section_data (osec)->dynindx;
14812 if ((osec->flags & SEC_READONLY) == 0
14813 && htab->elf.data_index_section != NULL)
14814 osec = htab->elf.data_index_section;
14816 osec = htab->elf.text_index_section;
14817 indx = elf_section_data (osec)->dynindx;
14819 BFD_ASSERT (indx != 0);
14821 /* We are turning this relocation into one
14822 against a section symbol, so subtract out
14823 the output section's address but not the
14824 offset of the input section in the output
14826 outrel.r_addend -= osec->vma;
14829 outrel.r_info = ELF64_R_INFO (indx, r_type);
14833 sreloc = elf_section_data (input_section)->sreloc;
14835 ? h->elf.type == STT_GNU_IFUNC
14836 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14837 sreloc = htab->elf.irelplt;
14838 if (sreloc == NULL)
14841 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14844 loc = sreloc->contents;
14845 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14846 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14848 /* If this reloc is against an external symbol, it will
14849 be computed at runtime, so there's no need to do
14850 anything now. However, for the sake of prelink ensure
14851 that the section contents are a known value. */
14854 unresolved_reloc = FALSE;
14855 /* The value chosen here is quite arbitrary as ld.so
14856 ignores section contents except for the special
14857 case of .opd where the contents might be accessed
14858 before relocation. Choose zero, as that won't
14859 cause reloc overflow. */
14862 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14863 to improve backward compatibility with older
14865 if (r_type == R_PPC64_ADDR64)
14866 addend = outrel.r_addend;
14867 /* Adjust pc_relative relocs to have zero in *r_offset. */
14868 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14869 addend = (input_section->output_section->vma
14870 + input_section->output_offset
14877 case R_PPC64_GLOB_DAT:
14878 case R_PPC64_JMP_SLOT:
14879 case R_PPC64_JMP_IREL:
14880 case R_PPC64_RELATIVE:
14881 /* We shouldn't ever see these dynamic relocs in relocatable
14883 /* Fall through. */
14885 case R_PPC64_PLTGOT16:
14886 case R_PPC64_PLTGOT16_DS:
14887 case R_PPC64_PLTGOT16_HA:
14888 case R_PPC64_PLTGOT16_HI:
14889 case R_PPC64_PLTGOT16_LO:
14890 case R_PPC64_PLTGOT16_LO_DS:
14891 case R_PPC64_PLTREL32:
14892 case R_PPC64_PLTREL64:
14893 /* These ones haven't been implemented yet. */
14895 info->callbacks->einfo
14896 (_("%P: %B: %s is not supported for `%T'\n"),
14898 ppc64_elf_howto_table[r_type]->name, sym_name);
14900 bfd_set_error (bfd_error_invalid_operation);
14905 /* Multi-instruction sequences that access the TOC can be
14906 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14907 to nop; addi rb,r2,x; */
14913 case R_PPC64_GOT_TLSLD16_HI:
14914 case R_PPC64_GOT_TLSGD16_HI:
14915 case R_PPC64_GOT_TPREL16_HI:
14916 case R_PPC64_GOT_DTPREL16_HI:
14917 case R_PPC64_GOT16_HI:
14918 case R_PPC64_TOC16_HI:
14919 /* These relocs would only be useful if building up an
14920 offset to later add to r2, perhaps in an indexed
14921 addressing mode instruction. Don't try to optimize.
14922 Unfortunately, the possibility of someone building up an
14923 offset like this or even with the HA relocs, means that
14924 we need to check the high insn when optimizing the low
14928 case R_PPC64_GOT_TLSLD16_HA:
14929 case R_PPC64_GOT_TLSGD16_HA:
14930 case R_PPC64_GOT_TPREL16_HA:
14931 case R_PPC64_GOT_DTPREL16_HA:
14932 case R_PPC64_GOT16_HA:
14933 case R_PPC64_TOC16_HA:
14934 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14935 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14937 bfd_byte *p = contents + (rel->r_offset & ~3);
14938 bfd_put_32 (input_bfd, NOP, p);
14942 case R_PPC64_GOT_TLSLD16_LO:
14943 case R_PPC64_GOT_TLSGD16_LO:
14944 case R_PPC64_GOT_TPREL16_LO_DS:
14945 case R_PPC64_GOT_DTPREL16_LO_DS:
14946 case R_PPC64_GOT16_LO:
14947 case R_PPC64_GOT16_LO_DS:
14948 case R_PPC64_TOC16_LO:
14949 case R_PPC64_TOC16_LO_DS:
14950 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14951 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14953 bfd_byte *p = contents + (rel->r_offset & ~3);
14954 insn = bfd_get_32 (input_bfd, p);
14955 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14957 /* Transform addic to addi when we change reg. */
14958 insn &= ~((0x3f << 26) | (0x1f << 16));
14959 insn |= (14u << 26) | (2 << 16);
14963 insn &= ~(0x1f << 16);
14966 bfd_put_32 (input_bfd, insn, p);
14971 /* Do any further special processing. */
14972 howto = ppc64_elf_howto_table[(int) r_type];
14978 case R_PPC64_REL16_HA:
14979 case R_PPC64_REL16DX_HA:
14980 case R_PPC64_ADDR16_HA:
14981 case R_PPC64_ADDR16_HIGHA:
14982 case R_PPC64_ADDR16_HIGHERA:
14983 case R_PPC64_ADDR16_HIGHESTA:
14984 case R_PPC64_TOC16_HA:
14985 case R_PPC64_SECTOFF_HA:
14986 case R_PPC64_TPREL16_HA:
14987 case R_PPC64_TPREL16_HIGHA:
14988 case R_PPC64_TPREL16_HIGHERA:
14989 case R_PPC64_TPREL16_HIGHESTA:
14990 case R_PPC64_DTPREL16_HA:
14991 case R_PPC64_DTPREL16_HIGHA:
14992 case R_PPC64_DTPREL16_HIGHERA:
14993 case R_PPC64_DTPREL16_HIGHESTA:
14994 /* It's just possible that this symbol is a weak symbol
14995 that's not actually defined anywhere. In that case,
14996 'sec' would be NULL, and we should leave the symbol
14997 alone (it will be set to zero elsewhere in the link). */
15002 case R_PPC64_GOT16_HA:
15003 case R_PPC64_PLTGOT16_HA:
15004 case R_PPC64_PLT16_HA:
15005 case R_PPC64_GOT_TLSGD16_HA:
15006 case R_PPC64_GOT_TLSLD16_HA:
15007 case R_PPC64_GOT_TPREL16_HA:
15008 case R_PPC64_GOT_DTPREL16_HA:
15009 /* Add 0x10000 if sign bit in 0:15 is set.
15010 Bits 0:15 are not used. */
15014 case R_PPC64_ADDR16_DS:
15015 case R_PPC64_ADDR16_LO_DS:
15016 case R_PPC64_GOT16_DS:
15017 case R_PPC64_GOT16_LO_DS:
15018 case R_PPC64_PLT16_LO_DS:
15019 case R_PPC64_SECTOFF_DS:
15020 case R_PPC64_SECTOFF_LO_DS:
15021 case R_PPC64_TOC16_DS:
15022 case R_PPC64_TOC16_LO_DS:
15023 case R_PPC64_PLTGOT16_DS:
15024 case R_PPC64_PLTGOT16_LO_DS:
15025 case R_PPC64_GOT_TPREL16_DS:
15026 case R_PPC64_GOT_TPREL16_LO_DS:
15027 case R_PPC64_GOT_DTPREL16_DS:
15028 case R_PPC64_GOT_DTPREL16_LO_DS:
15029 case R_PPC64_TPREL16_DS:
15030 case R_PPC64_TPREL16_LO_DS:
15031 case R_PPC64_DTPREL16_DS:
15032 case R_PPC64_DTPREL16_LO_DS:
15033 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15035 /* If this reloc is against an lq, lxv, or stxv insn, then
15036 the value must be a multiple of 16. This is somewhat of
15037 a hack, but the "correct" way to do this by defining _DQ
15038 forms of all the _DS relocs bloats all reloc switches in
15039 this file. It doesn't make much sense to use these
15040 relocs in data, so testing the insn should be safe. */
15041 if ((insn & (0x3f << 26)) == (56u << 26)
15042 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15044 relocation += addend;
15045 addend = insn & (mask ^ 3);
15046 if ((relocation & mask) != 0)
15048 relocation ^= relocation & mask;
15049 info->callbacks->einfo
15050 (_("%P: %H: error: %s not a multiple of %u\n"),
15051 input_bfd, input_section, rel->r_offset,
15054 bfd_set_error (bfd_error_bad_value);
15061 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15062 because such sections are not SEC_ALLOC and thus ld.so will
15063 not process them. */
15064 if (unresolved_reloc
15065 && !((input_section->flags & SEC_DEBUGGING) != 0
15066 && h->elf.def_dynamic)
15067 && _bfd_elf_section_offset (output_bfd, info, input_section,
15068 rel->r_offset) != (bfd_vma) -1)
15070 info->callbacks->einfo
15071 (_("%P: %H: unresolvable %s against `%T'\n"),
15072 input_bfd, input_section, rel->r_offset,
15074 h->elf.root.root.string);
15078 /* 16-bit fields in insns mostly have signed values, but a
15079 few insns have 16-bit unsigned values. Really, we should
15080 have different reloc types. */
15081 if (howto->complain_on_overflow != complain_overflow_dont
15082 && howto->dst_mask == 0xffff
15083 && (input_section->flags & SEC_CODE) != 0)
15085 enum complain_overflow complain = complain_overflow_signed;
15087 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15088 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15089 complain = complain_overflow_bitfield;
15090 else if (howto->rightshift == 0
15091 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15092 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15093 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15094 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15095 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15096 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15097 complain = complain_overflow_unsigned;
15098 if (howto->complain_on_overflow != complain)
15100 alt_howto = *howto;
15101 alt_howto.complain_on_overflow = complain;
15102 howto = &alt_howto;
15106 if (r_type == R_PPC64_REL16DX_HA)
15108 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15109 if (rel->r_offset + 4 > input_section->size)
15110 r = bfd_reloc_outofrange;
15113 relocation += addend;
15114 relocation -= (rel->r_offset
15115 + input_section->output_offset
15116 + input_section->output_section->vma);
15117 relocation = (bfd_signed_vma) relocation >> 16;
15118 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15120 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15121 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15123 if (relocation + 0x8000 > 0xffff)
15124 r = bfd_reloc_overflow;
15128 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15129 rel->r_offset, relocation, addend);
15131 if (r != bfd_reloc_ok)
15133 char *more_info = NULL;
15134 const char *reloc_name = howto->name;
15136 if (reloc_dest != DEST_NORMAL)
15138 more_info = bfd_malloc (strlen (reloc_name) + 8);
15139 if (more_info != NULL)
15141 strcpy (more_info, reloc_name);
15142 strcat (more_info, (reloc_dest == DEST_OPD
15143 ? " (OPD)" : " (stub)"));
15144 reloc_name = more_info;
15148 if (r == bfd_reloc_overflow)
15150 /* On code like "if (foo) foo();" don't report overflow
15151 on a branch to zero when foo is undefined. */
15153 && (reloc_dest == DEST_STUB
15155 && (h->elf.root.type == bfd_link_hash_undefweak
15156 || h->elf.root.type == bfd_link_hash_undefined)
15157 && is_branch_reloc (r_type))))
15158 info->callbacks->reloc_overflow (info, &h->elf.root,
15159 sym_name, reloc_name,
15161 input_bfd, input_section,
15166 info->callbacks->einfo
15167 (_("%P: %H: %s against `%T': error %d\n"),
15168 input_bfd, input_section, rel->r_offset,
15169 reloc_name, sym_name, (int) r);
15172 if (more_info != NULL)
15182 Elf_Internal_Shdr *rel_hdr;
15183 size_t deleted = rel - wrel;
15185 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15186 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15187 if (rel_hdr->sh_size == 0)
15189 /* It is too late to remove an empty reloc section. Leave
15191 ??? What is wrong with an empty section??? */
15192 rel_hdr->sh_size = rel_hdr->sh_entsize;
15195 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15196 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15197 input_section->reloc_count -= deleted;
15200 /* If we're emitting relocations, then shortly after this function
15201 returns, reloc offsets and addends for this section will be
15202 adjusted. Worse, reloc symbol indices will be for the output
15203 file rather than the input. Save a copy of the relocs for
15204 opd_entry_value. */
15205 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15208 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15209 rel = bfd_alloc (input_bfd, amt);
15210 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15211 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15214 memcpy (rel, relocs, amt);
15219 /* Adjust the value of any local symbols in opd sections. */
15222 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15223 const char *name ATTRIBUTE_UNUSED,
15224 Elf_Internal_Sym *elfsym,
15225 asection *input_sec,
15226 struct elf_link_hash_entry *h)
15228 struct _opd_sec_data *opd;
15235 opd = get_opd_info (input_sec);
15236 if (opd == NULL || opd->adjust == NULL)
15239 value = elfsym->st_value - input_sec->output_offset;
15240 if (!bfd_link_relocatable (info))
15241 value -= input_sec->output_section->vma;
15243 adjust = opd->adjust[OPD_NDX (value)];
15247 elfsym->st_value += adjust;
15251 /* Finish up dynamic symbol handling. We set the contents of various
15252 dynamic sections here. */
15255 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15256 struct bfd_link_info *info,
15257 struct elf_link_hash_entry *h,
15258 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
15260 struct ppc_link_hash_table *htab;
15261 struct plt_entry *ent;
15262 Elf_Internal_Rela rela;
15265 htab = ppc_hash_table (info);
15269 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15270 if (ent->plt.offset != (bfd_vma) -1)
15272 /* This symbol has an entry in the procedure linkage
15273 table. Set it up. */
15274 if (!htab->elf.dynamic_sections_created
15275 || h->dynindx == -1)
15277 BFD_ASSERT (h->type == STT_GNU_IFUNC
15279 && (h->root.type == bfd_link_hash_defined
15280 || h->root.type == bfd_link_hash_defweak));
15281 rela.r_offset = (htab->elf.iplt->output_section->vma
15282 + htab->elf.iplt->output_offset
15283 + ent->plt.offset);
15285 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15287 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15288 rela.r_addend = (h->root.u.def.value
15289 + h->root.u.def.section->output_offset
15290 + h->root.u.def.section->output_section->vma
15292 loc = (htab->elf.irelplt->contents
15293 + (htab->elf.irelplt->reloc_count++
15294 * sizeof (Elf64_External_Rela)));
15298 rela.r_offset = (htab->elf.splt->output_section->vma
15299 + htab->elf.splt->output_offset
15300 + ent->plt.offset);
15301 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15302 rela.r_addend = ent->addend;
15303 loc = (htab->elf.srelplt->contents
15304 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15305 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15307 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15309 if (!htab->opd_abi)
15311 if (!h->def_regular)
15313 /* Mark the symbol as undefined, rather than as
15314 defined in glink. Leave the value if there were
15315 any relocations where pointer equality matters
15316 (this is a clue for the dynamic linker, to make
15317 function pointer comparisons work between an
15318 application and shared library), otherwise set it
15320 sym->st_shndx = SHN_UNDEF;
15321 if (!h->pointer_equality_needed)
15323 else if (!h->ref_regular_nonweak)
15325 /* This breaks function pointer comparisons, but
15326 that is better than breaking tests for a NULL
15327 function pointer. */
15336 /* This symbol needs a copy reloc. Set it up. */
15338 if (h->dynindx == -1
15339 || (h->root.type != bfd_link_hash_defined
15340 && h->root.type != bfd_link_hash_defweak)
15341 || htab->relbss == NULL)
15344 rela.r_offset = (h->root.u.def.value
15345 + h->root.u.def.section->output_section->vma
15346 + h->root.u.def.section->output_offset);
15347 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15349 loc = htab->relbss->contents;
15350 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
15351 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15357 /* Used to decide how to sort relocs in an optimal manner for the
15358 dynamic linker, before writing them out. */
15360 static enum elf_reloc_type_class
15361 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15362 const asection *rel_sec,
15363 const Elf_Internal_Rela *rela)
15365 enum elf_ppc64_reloc_type r_type;
15366 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15368 if (rel_sec == htab->elf.irelplt)
15369 return reloc_class_ifunc;
15371 r_type = ELF64_R_TYPE (rela->r_info);
15374 case R_PPC64_RELATIVE:
15375 return reloc_class_relative;
15376 case R_PPC64_JMP_SLOT:
15377 return reloc_class_plt;
15379 return reloc_class_copy;
15381 return reloc_class_normal;
15385 /* Finish up the dynamic sections. */
15388 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15389 struct bfd_link_info *info)
15391 struct ppc_link_hash_table *htab;
15395 htab = ppc_hash_table (info);
15399 dynobj = htab->elf.dynobj;
15400 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15402 if (htab->elf.dynamic_sections_created)
15404 Elf64_External_Dyn *dyncon, *dynconend;
15406 if (sdyn == NULL || htab->elf.sgot == NULL)
15409 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15410 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15411 for (; dyncon < dynconend; dyncon++)
15413 Elf_Internal_Dyn dyn;
15416 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15423 case DT_PPC64_GLINK:
15425 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15426 /* We stupidly defined DT_PPC64_GLINK to be the start
15427 of glink rather than the first entry point, which is
15428 what ld.so needs, and now have a bigger stub to
15429 support automatic multiple TOCs. */
15430 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15434 s = bfd_get_section_by_name (output_bfd, ".opd");
15437 dyn.d_un.d_ptr = s->vma;
15441 if (htab->do_multi_toc && htab->multi_toc_needed)
15442 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15445 case DT_PPC64_OPDSZ:
15446 s = bfd_get_section_by_name (output_bfd, ".opd");
15449 dyn.d_un.d_val = s->size;
15453 s = htab->elf.splt;
15454 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15458 s = htab->elf.srelplt;
15459 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15463 dyn.d_un.d_val = htab->elf.srelplt->size;
15467 /* Don't count procedure linkage table relocs in the
15468 overall reloc count. */
15469 s = htab->elf.srelplt;
15472 dyn.d_un.d_val -= s->size;
15476 /* We may not be using the standard ELF linker script.
15477 If .rela.plt is the first .rela section, we adjust
15478 DT_RELA to not include it. */
15479 s = htab->elf.srelplt;
15482 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15484 dyn.d_un.d_ptr += s->size;
15488 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15492 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15494 /* Fill in the first entry in the global offset table.
15495 We use it to hold the link-time TOCbase. */
15496 bfd_put_64 (output_bfd,
15497 elf_gp (output_bfd) + TOC_BASE_OFF,
15498 htab->elf.sgot->contents);
15500 /* Set .got entry size. */
15501 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15504 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15506 /* Set .plt entry size. */
15507 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15508 = PLT_ENTRY_SIZE (htab);
15511 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15512 brlt ourselves if emitrelocations. */
15513 if (htab->brlt != NULL
15514 && htab->brlt->reloc_count != 0
15515 && !_bfd_elf_link_output_relocs (output_bfd,
15517 elf_section_data (htab->brlt)->rela.hdr,
15518 elf_section_data (htab->brlt)->relocs,
15522 if (htab->glink != NULL
15523 && htab->glink->reloc_count != 0
15524 && !_bfd_elf_link_output_relocs (output_bfd,
15526 elf_section_data (htab->glink)->rela.hdr,
15527 elf_section_data (htab->glink)->relocs,
15531 if (htab->glink_eh_frame != NULL
15532 && htab->glink_eh_frame->size != 0)
15536 asection *stub_sec;
15538 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15539 for (stub_sec = htab->params->stub_bfd->sections;
15541 stub_sec = stub_sec->next)
15542 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15548 /* Offset to stub section. */
15549 val = (stub_sec->output_section->vma
15550 + stub_sec->output_offset);
15551 val -= (htab->glink_eh_frame->output_section->vma
15552 + htab->glink_eh_frame->output_offset
15553 + (p - htab->glink_eh_frame->contents));
15554 if (val + 0x80000000 > 0xffffffff)
15556 info->callbacks->einfo
15557 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15561 bfd_put_32 (dynobj, val, p);
15563 /* stub section size. */
15565 /* Augmentation. */
15570 if (htab->glink != NULL && htab->glink->size != 0)
15576 /* Offset to .glink. */
15577 val = (htab->glink->output_section->vma
15578 + htab->glink->output_offset
15580 val -= (htab->glink_eh_frame->output_section->vma
15581 + htab->glink_eh_frame->output_offset
15582 + (p - htab->glink_eh_frame->contents));
15583 if (val + 0x80000000 > 0xffffffff)
15585 info->callbacks->einfo
15586 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15587 htab->glink->name);
15590 bfd_put_32 (dynobj, val, p);
15594 /* Augmentation. */
15600 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15601 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15602 htab->glink_eh_frame,
15603 htab->glink_eh_frame->contents))
15607 /* We need to handle writing out multiple GOT sections ourselves,
15608 since we didn't add them to DYNOBJ. We know dynobj is the first
15610 while ((dynobj = dynobj->link.next) != NULL)
15614 if (!is_ppc64_elf (dynobj))
15617 s = ppc64_elf_tdata (dynobj)->got;
15620 && s->output_section != bfd_abs_section_ptr
15621 && !bfd_set_section_contents (output_bfd, s->output_section,
15622 s->contents, s->output_offset,
15625 s = ppc64_elf_tdata (dynobj)->relgot;
15628 && s->output_section != bfd_abs_section_ptr
15629 && !bfd_set_section_contents (output_bfd, s->output_section,
15630 s->contents, s->output_offset,
15638 #include "elf64-target.h"
15640 /* FreeBSD support */
15642 #undef TARGET_LITTLE_SYM
15643 #undef TARGET_LITTLE_NAME
15645 #undef TARGET_BIG_SYM
15646 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15647 #undef TARGET_BIG_NAME
15648 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15651 #define ELF_OSABI ELFOSABI_FREEBSD
15654 #define elf64_bed elf64_powerpc_fbsd_bed
15656 #include "elf64-target.h"