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_dtrel_excludes_plt 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
85 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
86 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
87 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_before_check_relocs
99 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
112 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
113 #define elf_backend_action_discarded ppc64_elf_action_discarded
114 #define elf_backend_relocate_section ppc64_elf_relocate_section
115 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
116 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
117 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
118 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
119 #define elf_backend_special_sections ppc64_elf_special_sections
120 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
122 /* The name of the dynamic interpreter. This is put in the .interp
124 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
126 /* The size in bytes of an entry in the procedure linkage table. */
127 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
129 /* The initial size of the plt reserved for the dynamic linker. */
130 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
132 /* Offsets to some stack save slots. */
134 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
135 /* This one is dodgy. ELFv2 does not have a linker word, so use the
136 CR save slot. Used only by optimised __tls_get_addr call stub,
137 relying on __tls_get_addr_opt not saving CR.. */
138 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
140 /* TOC base pointers offset from start of TOC. */
141 #define TOC_BASE_OFF 0x8000
142 /* TOC base alignment. */
143 #define TOC_BASE_ALIGN 256
145 /* Offset of tp and dtp pointers from start of TLS block. */
146 #define TP_OFFSET 0x7000
147 #define DTP_OFFSET 0x8000
149 /* .plt call stub instructions. The normal stub is like this, but
150 sometimes the .plt entry crosses a 64k boundary and we need to
151 insert an addi to adjust r11. */
152 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
153 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
154 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
155 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
156 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
157 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
158 #define BCTR 0x4e800420 /* bctr */
160 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
161 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
162 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
164 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
165 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
166 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
167 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
168 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
169 #define BNECTR 0x4ca20420 /* bnectr+ */
170 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
172 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
173 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
174 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
176 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
177 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
178 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
180 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
181 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
182 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
183 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
184 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
186 /* glink call stub instructions. We enter with the index in R0. */
187 #define GLINK_CALL_STUB_SIZE (16*4)
191 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
192 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
194 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
195 /* ld %2,(0b-1b)(%11) */
196 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
197 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
203 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
204 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
205 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
206 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
207 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
210 #define NOP 0x60000000
212 /* Some other nops. */
213 #define CROR_151515 0x4def7b82
214 #define CROR_313131 0x4ffffb82
216 /* .glink entries for the first 32k functions are two instructions. */
217 #define LI_R0_0 0x38000000 /* li %r0,0 */
218 #define B_DOT 0x48000000 /* b . */
220 /* After that, we need two instructions to load the index, followed by
222 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
223 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
225 /* Instructions used by the save and restore reg functions. */
226 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
227 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
228 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
229 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
230 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
231 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
232 #define LI_R12_0 0x39800000 /* li %r12,0 */
233 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
234 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
235 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
236 #define BLR 0x4e800020 /* blr */
238 /* Since .opd is an array of descriptors and each entry will end up
239 with identical R_PPC64_RELATIVE relocs, there is really no need to
240 propagate .opd relocs; The dynamic linker should be taught to
241 relocate .opd without reloc entries. */
242 #ifndef NO_OPD_RELOCS
243 #define NO_OPD_RELOCS 0
247 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
251 abiversion (bfd *abfd)
253 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
257 set_abiversion (bfd *abfd, int ver)
259 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
260 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
263 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
265 /* Relocation HOWTO's. */
266 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
268 static reloc_howto_type ppc64_elf_howto_raw[] = {
269 /* This reloc does nothing. */
270 HOWTO (R_PPC64_NONE, /* type */
272 3, /* size (0 = byte, 1 = short, 2 = long) */
274 FALSE, /* pc_relative */
276 complain_overflow_dont, /* complain_on_overflow */
277 bfd_elf_generic_reloc, /* special_function */
278 "R_PPC64_NONE", /* name */
279 FALSE, /* partial_inplace */
282 FALSE), /* pcrel_offset */
284 /* A standard 32 bit relocation. */
285 HOWTO (R_PPC64_ADDR32, /* type */
287 2, /* size (0 = byte, 1 = short, 2 = long) */
289 FALSE, /* pc_relative */
291 complain_overflow_bitfield, /* complain_on_overflow */
292 bfd_elf_generic_reloc, /* special_function */
293 "R_PPC64_ADDR32", /* name */
294 FALSE, /* partial_inplace */
296 0xffffffff, /* dst_mask */
297 FALSE), /* pcrel_offset */
299 /* An absolute 26 bit branch; the lower two bits must be zero.
300 FIXME: we don't check that, we just clear them. */
301 HOWTO (R_PPC64_ADDR24, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE, /* pc_relative */
307 complain_overflow_bitfield, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_PPC64_ADDR24", /* name */
310 FALSE, /* partial_inplace */
312 0x03fffffc, /* dst_mask */
313 FALSE), /* pcrel_offset */
315 /* A standard 16 bit relocation. */
316 HOWTO (R_PPC64_ADDR16, /* type */
318 1, /* size (0 = byte, 1 = short, 2 = long) */
320 FALSE, /* pc_relative */
322 complain_overflow_bitfield, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_PPC64_ADDR16", /* name */
325 FALSE, /* partial_inplace */
327 0xffff, /* dst_mask */
328 FALSE), /* pcrel_offset */
330 /* A 16 bit relocation without overflow. */
331 HOWTO (R_PPC64_ADDR16_LO, /* type */
333 1, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE, /* pc_relative */
337 complain_overflow_dont,/* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_PPC64_ADDR16_LO", /* name */
340 FALSE, /* partial_inplace */
342 0xffff, /* dst_mask */
343 FALSE), /* pcrel_offset */
345 /* Bits 16-31 of an address. */
346 HOWTO (R_PPC64_ADDR16_HI, /* type */
348 1, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_signed, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_PPC64_ADDR16_HI", /* name */
355 FALSE, /* partial_inplace */
357 0xffff, /* dst_mask */
358 FALSE), /* pcrel_offset */
360 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
361 bits, treated as a signed number, is negative. */
362 HOWTO (R_PPC64_ADDR16_HA, /* type */
364 1, /* size (0 = byte, 1 = short, 2 = long) */
366 FALSE, /* pc_relative */
368 complain_overflow_signed, /* complain_on_overflow */
369 ppc64_elf_ha_reloc, /* special_function */
370 "R_PPC64_ADDR16_HA", /* name */
371 FALSE, /* partial_inplace */
373 0xffff, /* dst_mask */
374 FALSE), /* pcrel_offset */
376 /* An absolute 16 bit branch; the lower two bits must be zero.
377 FIXME: we don't check that, we just clear them. */
378 HOWTO (R_PPC64_ADDR14, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 FALSE, /* pc_relative */
384 complain_overflow_signed, /* complain_on_overflow */
385 ppc64_elf_branch_reloc, /* special_function */
386 "R_PPC64_ADDR14", /* name */
387 FALSE, /* partial_inplace */
389 0x0000fffc, /* dst_mask */
390 FALSE), /* pcrel_offset */
392 /* An absolute 16 bit branch, for which bit 10 should be set to
393 indicate that the branch is expected to be taken. The lower two
394 bits must be zero. */
395 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
399 FALSE, /* pc_relative */
401 complain_overflow_signed, /* complain_on_overflow */
402 ppc64_elf_brtaken_reloc, /* special_function */
403 "R_PPC64_ADDR14_BRTAKEN",/* name */
404 FALSE, /* partial_inplace */
406 0x0000fffc, /* dst_mask */
407 FALSE), /* pcrel_offset */
409 /* An absolute 16 bit branch, for which bit 10 should be set to
410 indicate that the branch is not expected to be taken. The lower
411 two bits must be zero. */
412 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
414 2, /* size (0 = byte, 1 = short, 2 = long) */
416 FALSE, /* pc_relative */
418 complain_overflow_signed, /* complain_on_overflow */
419 ppc64_elf_brtaken_reloc, /* special_function */
420 "R_PPC64_ADDR14_BRNTAKEN",/* name */
421 FALSE, /* partial_inplace */
423 0x0000fffc, /* dst_mask */
424 FALSE), /* pcrel_offset */
426 /* A relative 26 bit branch; the lower two bits must be zero. */
427 HOWTO (R_PPC64_REL24, /* type */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
431 TRUE, /* pc_relative */
433 complain_overflow_signed, /* complain_on_overflow */
434 ppc64_elf_branch_reloc, /* special_function */
435 "R_PPC64_REL24", /* name */
436 FALSE, /* partial_inplace */
438 0x03fffffc, /* dst_mask */
439 TRUE), /* pcrel_offset */
441 /* A relative 16 bit branch; the lower two bits must be zero. */
442 HOWTO (R_PPC64_REL14, /* type */
444 2, /* size (0 = byte, 1 = short, 2 = long) */
446 TRUE, /* pc_relative */
448 complain_overflow_signed, /* complain_on_overflow */
449 ppc64_elf_branch_reloc, /* special_function */
450 "R_PPC64_REL14", /* name */
451 FALSE, /* partial_inplace */
453 0x0000fffc, /* dst_mask */
454 TRUE), /* pcrel_offset */
456 /* A relative 16 bit branch. Bit 10 should be set to indicate that
457 the branch is expected to be taken. The lower two bits must be
459 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
461 2, /* size (0 = byte, 1 = short, 2 = long) */
463 TRUE, /* pc_relative */
465 complain_overflow_signed, /* complain_on_overflow */
466 ppc64_elf_brtaken_reloc, /* special_function */
467 "R_PPC64_REL14_BRTAKEN", /* name */
468 FALSE, /* partial_inplace */
470 0x0000fffc, /* dst_mask */
471 TRUE), /* pcrel_offset */
473 /* A relative 16 bit branch. Bit 10 should be set to indicate that
474 the branch is not expected to be taken. The lower two bits must
476 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
480 TRUE, /* pc_relative */
482 complain_overflow_signed, /* complain_on_overflow */
483 ppc64_elf_brtaken_reloc, /* special_function */
484 "R_PPC64_REL14_BRNTAKEN",/* name */
485 FALSE, /* partial_inplace */
487 0x0000fffc, /* dst_mask */
488 TRUE), /* pcrel_offset */
490 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
492 HOWTO (R_PPC64_GOT16, /* type */
494 1, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE, /* pc_relative */
498 complain_overflow_signed, /* complain_on_overflow */
499 ppc64_elf_unhandled_reloc, /* special_function */
500 "R_PPC64_GOT16", /* name */
501 FALSE, /* partial_inplace */
503 0xffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
506 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
508 HOWTO (R_PPC64_GOT16_LO, /* type */
510 1, /* size (0 = byte, 1 = short, 2 = long) */
512 FALSE, /* pc_relative */
514 complain_overflow_dont, /* complain_on_overflow */
515 ppc64_elf_unhandled_reloc, /* special_function */
516 "R_PPC64_GOT16_LO", /* name */
517 FALSE, /* partial_inplace */
519 0xffff, /* dst_mask */
520 FALSE), /* pcrel_offset */
522 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
524 HOWTO (R_PPC64_GOT16_HI, /* type */
526 1, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE, /* pc_relative */
530 complain_overflow_signed,/* complain_on_overflow */
531 ppc64_elf_unhandled_reloc, /* special_function */
532 "R_PPC64_GOT16_HI", /* name */
533 FALSE, /* partial_inplace */
535 0xffff, /* dst_mask */
536 FALSE), /* pcrel_offset */
538 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
540 HOWTO (R_PPC64_GOT16_HA, /* type */
542 1, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE, /* pc_relative */
546 complain_overflow_signed,/* complain_on_overflow */
547 ppc64_elf_unhandled_reloc, /* special_function */
548 "R_PPC64_GOT16_HA", /* name */
549 FALSE, /* partial_inplace */
551 0xffff, /* dst_mask */
552 FALSE), /* pcrel_offset */
554 /* This is used only by the dynamic linker. The symbol should exist
555 both in the object being run and in some shared library. The
556 dynamic linker copies the data addressed by the symbol from the
557 shared library into the object, because the object being
558 run has to have the data at some particular address. */
559 HOWTO (R_PPC64_COPY, /* type */
561 0, /* this one is variable size */
563 FALSE, /* pc_relative */
565 complain_overflow_dont, /* complain_on_overflow */
566 ppc64_elf_unhandled_reloc, /* special_function */
567 "R_PPC64_COPY", /* name */
568 FALSE, /* partial_inplace */
571 FALSE), /* pcrel_offset */
573 /* Like R_PPC64_ADDR64, but used when setting global offset table
575 HOWTO (R_PPC64_GLOB_DAT, /* type */
577 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
579 FALSE, /* pc_relative */
581 complain_overflow_dont, /* complain_on_overflow */
582 ppc64_elf_unhandled_reloc, /* special_function */
583 "R_PPC64_GLOB_DAT", /* name */
584 FALSE, /* partial_inplace */
586 ONES (64), /* dst_mask */
587 FALSE), /* pcrel_offset */
589 /* Created by the link editor. Marks a procedure linkage table
590 entry for a symbol. */
591 HOWTO (R_PPC64_JMP_SLOT, /* type */
593 0, /* size (0 = byte, 1 = short, 2 = long) */
595 FALSE, /* pc_relative */
597 complain_overflow_dont, /* complain_on_overflow */
598 ppc64_elf_unhandled_reloc, /* special_function */
599 "R_PPC64_JMP_SLOT", /* name */
600 FALSE, /* partial_inplace */
603 FALSE), /* pcrel_offset */
605 /* Used only by the dynamic linker. When the object is run, this
606 doubleword64 is set to the load address of the object, plus the
608 HOWTO (R_PPC64_RELATIVE, /* type */
610 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
612 FALSE, /* pc_relative */
614 complain_overflow_dont, /* complain_on_overflow */
615 bfd_elf_generic_reloc, /* special_function */
616 "R_PPC64_RELATIVE", /* name */
617 FALSE, /* partial_inplace */
619 ONES (64), /* dst_mask */
620 FALSE), /* pcrel_offset */
622 /* Like R_PPC64_ADDR32, but may be unaligned. */
623 HOWTO (R_PPC64_UADDR32, /* type */
625 2, /* size (0 = byte, 1 = short, 2 = long) */
627 FALSE, /* pc_relative */
629 complain_overflow_bitfield, /* complain_on_overflow */
630 bfd_elf_generic_reloc, /* special_function */
631 "R_PPC64_UADDR32", /* name */
632 FALSE, /* partial_inplace */
634 0xffffffff, /* dst_mask */
635 FALSE), /* pcrel_offset */
637 /* Like R_PPC64_ADDR16, but may be unaligned. */
638 HOWTO (R_PPC64_UADDR16, /* type */
640 1, /* size (0 = byte, 1 = short, 2 = long) */
642 FALSE, /* pc_relative */
644 complain_overflow_bitfield, /* complain_on_overflow */
645 bfd_elf_generic_reloc, /* special_function */
646 "R_PPC64_UADDR16", /* name */
647 FALSE, /* partial_inplace */
649 0xffff, /* dst_mask */
650 FALSE), /* pcrel_offset */
652 /* 32-bit PC relative. */
653 HOWTO (R_PPC64_REL32, /* type */
655 2, /* size (0 = byte, 1 = short, 2 = long) */
657 TRUE, /* pc_relative */
659 complain_overflow_signed, /* complain_on_overflow */
660 bfd_elf_generic_reloc, /* special_function */
661 "R_PPC64_REL32", /* name */
662 FALSE, /* partial_inplace */
664 0xffffffff, /* dst_mask */
665 TRUE), /* pcrel_offset */
667 /* 32-bit relocation to the symbol's procedure linkage table. */
668 HOWTO (R_PPC64_PLT32, /* type */
670 2, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE, /* pc_relative */
674 complain_overflow_bitfield, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc, /* special_function */
676 "R_PPC64_PLT32", /* name */
677 FALSE, /* partial_inplace */
679 0xffffffff, /* dst_mask */
680 FALSE), /* pcrel_offset */
682 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
683 FIXME: R_PPC64_PLTREL32 not supported. */
684 HOWTO (R_PPC64_PLTREL32, /* type */
686 2, /* size (0 = byte, 1 = short, 2 = long) */
688 TRUE, /* pc_relative */
690 complain_overflow_signed, /* complain_on_overflow */
691 ppc64_elf_unhandled_reloc, /* special_function */
692 "R_PPC64_PLTREL32", /* name */
693 FALSE, /* partial_inplace */
695 0xffffffff, /* dst_mask */
696 TRUE), /* pcrel_offset */
698 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
700 HOWTO (R_PPC64_PLT16_LO, /* type */
702 1, /* size (0 = byte, 1 = short, 2 = long) */
704 FALSE, /* pc_relative */
706 complain_overflow_dont, /* complain_on_overflow */
707 ppc64_elf_unhandled_reloc, /* special_function */
708 "R_PPC64_PLT16_LO", /* name */
709 FALSE, /* partial_inplace */
711 0xffff, /* dst_mask */
712 FALSE), /* pcrel_offset */
714 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
716 HOWTO (R_PPC64_PLT16_HI, /* type */
718 1, /* size (0 = byte, 1 = short, 2 = long) */
720 FALSE, /* pc_relative */
722 complain_overflow_signed, /* complain_on_overflow */
723 ppc64_elf_unhandled_reloc, /* special_function */
724 "R_PPC64_PLT16_HI", /* name */
725 FALSE, /* partial_inplace */
727 0xffff, /* dst_mask */
728 FALSE), /* pcrel_offset */
730 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
732 HOWTO (R_PPC64_PLT16_HA, /* type */
734 1, /* size (0 = byte, 1 = short, 2 = long) */
736 FALSE, /* pc_relative */
738 complain_overflow_signed, /* complain_on_overflow */
739 ppc64_elf_unhandled_reloc, /* special_function */
740 "R_PPC64_PLT16_HA", /* name */
741 FALSE, /* partial_inplace */
743 0xffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
746 /* 16-bit section relative relocation. */
747 HOWTO (R_PPC64_SECTOFF, /* type */
749 1, /* size (0 = byte, 1 = short, 2 = long) */
751 FALSE, /* pc_relative */
753 complain_overflow_signed, /* complain_on_overflow */
754 ppc64_elf_sectoff_reloc, /* special_function */
755 "R_PPC64_SECTOFF", /* name */
756 FALSE, /* partial_inplace */
758 0xffff, /* dst_mask */
759 FALSE), /* pcrel_offset */
761 /* Like R_PPC64_SECTOFF, but no overflow warning. */
762 HOWTO (R_PPC64_SECTOFF_LO, /* type */
764 1, /* size (0 = byte, 1 = short, 2 = long) */
766 FALSE, /* pc_relative */
768 complain_overflow_dont, /* complain_on_overflow */
769 ppc64_elf_sectoff_reloc, /* special_function */
770 "R_PPC64_SECTOFF_LO", /* name */
771 FALSE, /* partial_inplace */
773 0xffff, /* dst_mask */
774 FALSE), /* pcrel_offset */
776 /* 16-bit upper half section relative relocation. */
777 HOWTO (R_PPC64_SECTOFF_HI, /* type */
779 1, /* size (0 = byte, 1 = short, 2 = long) */
781 FALSE, /* pc_relative */
783 complain_overflow_signed, /* complain_on_overflow */
784 ppc64_elf_sectoff_reloc, /* special_function */
785 "R_PPC64_SECTOFF_HI", /* name */
786 FALSE, /* partial_inplace */
788 0xffff, /* dst_mask */
789 FALSE), /* pcrel_offset */
791 /* 16-bit upper half adjusted section relative relocation. */
792 HOWTO (R_PPC64_SECTOFF_HA, /* type */
794 1, /* size (0 = byte, 1 = short, 2 = long) */
796 FALSE, /* pc_relative */
798 complain_overflow_signed, /* complain_on_overflow */
799 ppc64_elf_sectoff_ha_reloc, /* special_function */
800 "R_PPC64_SECTOFF_HA", /* name */
801 FALSE, /* partial_inplace */
803 0xffff, /* dst_mask */
804 FALSE), /* pcrel_offset */
806 /* Like R_PPC64_REL24 without touching the two least significant bits. */
807 HOWTO (R_PPC64_REL30, /* type */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
811 TRUE, /* pc_relative */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
815 "R_PPC64_REL30", /* name */
816 FALSE, /* partial_inplace */
818 0xfffffffc, /* dst_mask */
819 TRUE), /* pcrel_offset */
821 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
823 /* A standard 64-bit relocation. */
824 HOWTO (R_PPC64_ADDR64, /* type */
826 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
828 FALSE, /* pc_relative */
830 complain_overflow_dont, /* complain_on_overflow */
831 bfd_elf_generic_reloc, /* special_function */
832 "R_PPC64_ADDR64", /* name */
833 FALSE, /* partial_inplace */
835 ONES (64), /* dst_mask */
836 FALSE), /* pcrel_offset */
838 /* The bits 32-47 of an address. */
839 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
841 1, /* size (0 = byte, 1 = short, 2 = long) */
843 FALSE, /* pc_relative */
845 complain_overflow_dont, /* complain_on_overflow */
846 bfd_elf_generic_reloc, /* special_function */
847 "R_PPC64_ADDR16_HIGHER", /* name */
848 FALSE, /* partial_inplace */
850 0xffff, /* dst_mask */
851 FALSE), /* pcrel_offset */
853 /* The bits 32-47 of an address, plus 1 if the contents of the low
854 16 bits, treated as a signed number, is negative. */
855 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
857 1, /* size (0 = byte, 1 = short, 2 = long) */
859 FALSE, /* pc_relative */
861 complain_overflow_dont, /* complain_on_overflow */
862 ppc64_elf_ha_reloc, /* special_function */
863 "R_PPC64_ADDR16_HIGHERA", /* name */
864 FALSE, /* partial_inplace */
866 0xffff, /* dst_mask */
867 FALSE), /* pcrel_offset */
869 /* The bits 48-63 of an address. */
870 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
872 1, /* size (0 = byte, 1 = short, 2 = long) */
874 FALSE, /* pc_relative */
876 complain_overflow_dont, /* complain_on_overflow */
877 bfd_elf_generic_reloc, /* special_function */
878 "R_PPC64_ADDR16_HIGHEST", /* name */
879 FALSE, /* partial_inplace */
881 0xffff, /* dst_mask */
882 FALSE), /* pcrel_offset */
884 /* The bits 48-63 of an address, plus 1 if the contents of the low
885 16 bits, treated as a signed number, is negative. */
886 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
888 1, /* size (0 = byte, 1 = short, 2 = long) */
890 FALSE, /* pc_relative */
892 complain_overflow_dont, /* complain_on_overflow */
893 ppc64_elf_ha_reloc, /* special_function */
894 "R_PPC64_ADDR16_HIGHESTA", /* name */
895 FALSE, /* partial_inplace */
897 0xffff, /* dst_mask */
898 FALSE), /* pcrel_offset */
900 /* Like ADDR64, but may be unaligned. */
901 HOWTO (R_PPC64_UADDR64, /* type */
903 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
905 FALSE, /* pc_relative */
907 complain_overflow_dont, /* complain_on_overflow */
908 bfd_elf_generic_reloc, /* special_function */
909 "R_PPC64_UADDR64", /* name */
910 FALSE, /* partial_inplace */
912 ONES (64), /* dst_mask */
913 FALSE), /* pcrel_offset */
915 /* 64-bit relative relocation. */
916 HOWTO (R_PPC64_REL64, /* type */
918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
920 TRUE, /* pc_relative */
922 complain_overflow_dont, /* complain_on_overflow */
923 bfd_elf_generic_reloc, /* special_function */
924 "R_PPC64_REL64", /* name */
925 FALSE, /* partial_inplace */
927 ONES (64), /* dst_mask */
928 TRUE), /* pcrel_offset */
930 /* 64-bit relocation to the symbol's procedure linkage table. */
931 HOWTO (R_PPC64_PLT64, /* type */
933 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
935 FALSE, /* pc_relative */
937 complain_overflow_dont, /* complain_on_overflow */
938 ppc64_elf_unhandled_reloc, /* special_function */
939 "R_PPC64_PLT64", /* name */
940 FALSE, /* partial_inplace */
942 ONES (64), /* dst_mask */
943 FALSE), /* pcrel_offset */
945 /* 64-bit PC relative relocation to the symbol's procedure linkage
947 /* FIXME: R_PPC64_PLTREL64 not supported. */
948 HOWTO (R_PPC64_PLTREL64, /* type */
950 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
952 TRUE, /* pc_relative */
954 complain_overflow_dont, /* complain_on_overflow */
955 ppc64_elf_unhandled_reloc, /* special_function */
956 "R_PPC64_PLTREL64", /* name */
957 FALSE, /* partial_inplace */
959 ONES (64), /* dst_mask */
960 TRUE), /* pcrel_offset */
962 /* 16 bit TOC-relative relocation. */
964 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
965 HOWTO (R_PPC64_TOC16, /* type */
967 1, /* size (0 = byte, 1 = short, 2 = long) */
969 FALSE, /* pc_relative */
971 complain_overflow_signed, /* complain_on_overflow */
972 ppc64_elf_toc_reloc, /* special_function */
973 "R_PPC64_TOC16", /* name */
974 FALSE, /* partial_inplace */
976 0xffff, /* dst_mask */
977 FALSE), /* pcrel_offset */
979 /* 16 bit TOC-relative relocation without overflow. */
981 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
982 HOWTO (R_PPC64_TOC16_LO, /* type */
984 1, /* size (0 = byte, 1 = short, 2 = long) */
986 FALSE, /* pc_relative */
988 complain_overflow_dont, /* complain_on_overflow */
989 ppc64_elf_toc_reloc, /* special_function */
990 "R_PPC64_TOC16_LO", /* name */
991 FALSE, /* partial_inplace */
993 0xffff, /* dst_mask */
994 FALSE), /* pcrel_offset */
996 /* 16 bit TOC-relative relocation, high 16 bits. */
998 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
999 HOWTO (R_PPC64_TOC16_HI, /* type */
1000 16, /* rightshift */
1001 1, /* size (0 = byte, 1 = short, 2 = long) */
1003 FALSE, /* pc_relative */
1005 complain_overflow_signed, /* complain_on_overflow */
1006 ppc64_elf_toc_reloc, /* special_function */
1007 "R_PPC64_TOC16_HI", /* name */
1008 FALSE, /* partial_inplace */
1010 0xffff, /* dst_mask */
1011 FALSE), /* pcrel_offset */
1013 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1014 contents of the low 16 bits, treated as a signed number, is
1017 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1018 HOWTO (R_PPC64_TOC16_HA, /* type */
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 FALSE, /* pc_relative */
1024 complain_overflow_signed, /* complain_on_overflow */
1025 ppc64_elf_toc_ha_reloc, /* special_function */
1026 "R_PPC64_TOC16_HA", /* name */
1027 FALSE, /* partial_inplace */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1032 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1034 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1035 HOWTO (R_PPC64_TOC, /* type */
1037 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc64_elf_toc64_reloc, /* special_function */
1043 "R_PPC64_TOC", /* name */
1044 FALSE, /* partial_inplace */
1046 ONES (64), /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like R_PPC64_GOT16, but also informs the link editor that the
1050 value to relocate may (!) refer to a PLT entry which the link
1051 editor (a) may replace with the symbol value. If the link editor
1052 is unable to fully resolve the symbol, it may (b) create a PLT
1053 entry and store the address to the new PLT entry in the GOT.
1054 This permits lazy resolution of function symbols at run time.
1055 The link editor may also skip all of this and just (c) emit a
1056 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1057 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1058 HOWTO (R_PPC64_PLTGOT16, /* type */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE, /* pc_relative */
1064 complain_overflow_signed, /* complain_on_overflow */
1065 ppc64_elf_unhandled_reloc, /* special_function */
1066 "R_PPC64_PLTGOT16", /* name */
1067 FALSE, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1072 /* Like R_PPC64_PLTGOT16, but without overflow. */
1073 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1074 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE, /* pc_relative */
1080 complain_overflow_dont, /* complain_on_overflow */
1081 ppc64_elf_unhandled_reloc, /* special_function */
1082 "R_PPC64_PLTGOT16_LO", /* name */
1083 FALSE, /* partial_inplace */
1085 0xffff, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1088 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1089 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1090 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1091 16, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE, /* pc_relative */
1096 complain_overflow_signed, /* complain_on_overflow */
1097 ppc64_elf_unhandled_reloc, /* special_function */
1098 "R_PPC64_PLTGOT16_HI", /* name */
1099 FALSE, /* partial_inplace */
1101 0xffff, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1104 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1105 1 if the contents of the low 16 bits, treated as a signed number,
1107 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1108 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1109 16, /* rightshift */
1110 1, /* size (0 = byte, 1 = short, 2 = long) */
1112 FALSE, /* pc_relative */
1114 complain_overflow_signed, /* complain_on_overflow */
1115 ppc64_elf_unhandled_reloc, /* special_function */
1116 "R_PPC64_PLTGOT16_HA", /* name */
1117 FALSE, /* partial_inplace */
1119 0xffff, /* dst_mask */
1120 FALSE), /* pcrel_offset */
1122 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1123 HOWTO (R_PPC64_ADDR16_DS, /* type */
1125 1, /* size (0 = byte, 1 = short, 2 = long) */
1127 FALSE, /* pc_relative */
1129 complain_overflow_signed, /* complain_on_overflow */
1130 bfd_elf_generic_reloc, /* special_function */
1131 "R_PPC64_ADDR16_DS", /* name */
1132 FALSE, /* partial_inplace */
1134 0xfffc, /* dst_mask */
1135 FALSE), /* pcrel_offset */
1137 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1138 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1140 1, /* size (0 = byte, 1 = short, 2 = long) */
1142 FALSE, /* pc_relative */
1144 complain_overflow_dont,/* complain_on_overflow */
1145 bfd_elf_generic_reloc, /* special_function */
1146 "R_PPC64_ADDR16_LO_DS",/* name */
1147 FALSE, /* partial_inplace */
1149 0xfffc, /* dst_mask */
1150 FALSE), /* pcrel_offset */
1152 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1153 HOWTO (R_PPC64_GOT16_DS, /* type */
1155 1, /* size (0 = byte, 1 = short, 2 = long) */
1157 FALSE, /* pc_relative */
1159 complain_overflow_signed, /* complain_on_overflow */
1160 ppc64_elf_unhandled_reloc, /* special_function */
1161 "R_PPC64_GOT16_DS", /* name */
1162 FALSE, /* partial_inplace */
1164 0xfffc, /* dst_mask */
1165 FALSE), /* pcrel_offset */
1167 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1168 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1170 1, /* size (0 = byte, 1 = short, 2 = long) */
1172 FALSE, /* pc_relative */
1174 complain_overflow_dont, /* complain_on_overflow */
1175 ppc64_elf_unhandled_reloc, /* special_function */
1176 "R_PPC64_GOT16_LO_DS", /* name */
1177 FALSE, /* partial_inplace */
1179 0xfffc, /* dst_mask */
1180 FALSE), /* pcrel_offset */
1182 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1183 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1185 1, /* size (0 = byte, 1 = short, 2 = long) */
1187 FALSE, /* pc_relative */
1189 complain_overflow_dont, /* complain_on_overflow */
1190 ppc64_elf_unhandled_reloc, /* special_function */
1191 "R_PPC64_PLT16_LO_DS", /* name */
1192 FALSE, /* partial_inplace */
1194 0xfffc, /* dst_mask */
1195 FALSE), /* pcrel_offset */
1197 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1198 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1200 1, /* size (0 = byte, 1 = short, 2 = long) */
1202 FALSE, /* pc_relative */
1204 complain_overflow_signed, /* complain_on_overflow */
1205 ppc64_elf_sectoff_reloc, /* special_function */
1206 "R_PPC64_SECTOFF_DS", /* name */
1207 FALSE, /* partial_inplace */
1209 0xfffc, /* dst_mask */
1210 FALSE), /* pcrel_offset */
1212 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1213 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1215 1, /* size (0 = byte, 1 = short, 2 = long) */
1217 FALSE, /* pc_relative */
1219 complain_overflow_dont, /* complain_on_overflow */
1220 ppc64_elf_sectoff_reloc, /* special_function */
1221 "R_PPC64_SECTOFF_LO_DS",/* name */
1222 FALSE, /* partial_inplace */
1224 0xfffc, /* dst_mask */
1225 FALSE), /* pcrel_offset */
1227 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1228 HOWTO (R_PPC64_TOC16_DS, /* type */
1230 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 FALSE, /* pc_relative */
1234 complain_overflow_signed, /* complain_on_overflow */
1235 ppc64_elf_toc_reloc, /* special_function */
1236 "R_PPC64_TOC16_DS", /* name */
1237 FALSE, /* partial_inplace */
1239 0xfffc, /* dst_mask */
1240 FALSE), /* pcrel_offset */
1242 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1243 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1245 1, /* size (0 = byte, 1 = short, 2 = long) */
1247 FALSE, /* pc_relative */
1249 complain_overflow_dont, /* complain_on_overflow */
1250 ppc64_elf_toc_reloc, /* special_function */
1251 "R_PPC64_TOC16_LO_DS", /* name */
1252 FALSE, /* partial_inplace */
1254 0xfffc, /* dst_mask */
1255 FALSE), /* pcrel_offset */
1257 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1258 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1259 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1261 1, /* size (0 = byte, 1 = short, 2 = long) */
1263 FALSE, /* pc_relative */
1265 complain_overflow_signed, /* complain_on_overflow */
1266 ppc64_elf_unhandled_reloc, /* special_function */
1267 "R_PPC64_PLTGOT16_DS", /* name */
1268 FALSE, /* partial_inplace */
1270 0xfffc, /* dst_mask */
1271 FALSE), /* pcrel_offset */
1273 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1274 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1275 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1277 1, /* size (0 = byte, 1 = short, 2 = long) */
1279 FALSE, /* pc_relative */
1281 complain_overflow_dont, /* complain_on_overflow */
1282 ppc64_elf_unhandled_reloc, /* special_function */
1283 "R_PPC64_PLTGOT16_LO_DS",/* name */
1284 FALSE, /* partial_inplace */
1286 0xfffc, /* dst_mask */
1287 FALSE), /* pcrel_offset */
1289 /* Marker relocs for TLS. */
1292 2, /* size (0 = byte, 1 = short, 2 = long) */
1294 FALSE, /* pc_relative */
1296 complain_overflow_dont, /* complain_on_overflow */
1297 bfd_elf_generic_reloc, /* special_function */
1298 "R_PPC64_TLS", /* name */
1299 FALSE, /* partial_inplace */
1302 FALSE), /* pcrel_offset */
1304 HOWTO (R_PPC64_TLSGD,
1306 2, /* size (0 = byte, 1 = short, 2 = long) */
1308 FALSE, /* pc_relative */
1310 complain_overflow_dont, /* complain_on_overflow */
1311 bfd_elf_generic_reloc, /* special_function */
1312 "R_PPC64_TLSGD", /* name */
1313 FALSE, /* partial_inplace */
1316 FALSE), /* pcrel_offset */
1318 HOWTO (R_PPC64_TLSLD,
1320 2, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE, /* pc_relative */
1324 complain_overflow_dont, /* complain_on_overflow */
1325 bfd_elf_generic_reloc, /* special_function */
1326 "R_PPC64_TLSLD", /* name */
1327 FALSE, /* partial_inplace */
1330 FALSE), /* pcrel_offset */
1332 HOWTO (R_PPC64_TOCSAVE,
1334 2, /* size (0 = byte, 1 = short, 2 = long) */
1336 FALSE, /* pc_relative */
1338 complain_overflow_dont, /* complain_on_overflow */
1339 bfd_elf_generic_reloc, /* special_function */
1340 "R_PPC64_TOCSAVE", /* name */
1341 FALSE, /* partial_inplace */
1344 FALSE), /* pcrel_offset */
1346 /* Computes the load module index of the load module that contains the
1347 definition of its TLS sym. */
1348 HOWTO (R_PPC64_DTPMOD64,
1350 4, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE, /* pc_relative */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPMOD64", /* name */
1357 FALSE, /* partial_inplace */
1359 ONES (64), /* dst_mask */
1360 FALSE), /* pcrel_offset */
1362 /* Computes a dtv-relative displacement, the difference between the value
1363 of sym+add and the base address of the thread-local storage block that
1364 contains the definition of sym, minus 0x8000. */
1365 HOWTO (R_PPC64_DTPREL64,
1367 4, /* size (0 = byte, 1 = short, 2 = long) */
1369 FALSE, /* pc_relative */
1371 complain_overflow_dont, /* complain_on_overflow */
1372 ppc64_elf_unhandled_reloc, /* special_function */
1373 "R_PPC64_DTPREL64", /* name */
1374 FALSE, /* partial_inplace */
1376 ONES (64), /* dst_mask */
1377 FALSE), /* pcrel_offset */
1379 /* A 16 bit dtprel reloc. */
1380 HOWTO (R_PPC64_DTPREL16,
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 FALSE, /* pc_relative */
1386 complain_overflow_signed, /* complain_on_overflow */
1387 ppc64_elf_unhandled_reloc, /* special_function */
1388 "R_PPC64_DTPREL16", /* name */
1389 FALSE, /* partial_inplace */
1391 0xffff, /* dst_mask */
1392 FALSE), /* pcrel_offset */
1394 /* Like DTPREL16, but no overflow. */
1395 HOWTO (R_PPC64_DTPREL16_LO,
1397 1, /* size (0 = byte, 1 = short, 2 = long) */
1399 FALSE, /* pc_relative */
1401 complain_overflow_dont, /* complain_on_overflow */
1402 ppc64_elf_unhandled_reloc, /* special_function */
1403 "R_PPC64_DTPREL16_LO", /* name */
1404 FALSE, /* partial_inplace */
1406 0xffff, /* dst_mask */
1407 FALSE), /* pcrel_offset */
1409 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1410 HOWTO (R_PPC64_DTPREL16_HI,
1411 16, /* rightshift */
1412 1, /* size (0 = byte, 1 = short, 2 = long) */
1414 FALSE, /* pc_relative */
1416 complain_overflow_signed, /* complain_on_overflow */
1417 ppc64_elf_unhandled_reloc, /* special_function */
1418 "R_PPC64_DTPREL16_HI", /* name */
1419 FALSE, /* partial_inplace */
1421 0xffff, /* dst_mask */
1422 FALSE), /* pcrel_offset */
1424 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1425 HOWTO (R_PPC64_DTPREL16_HA,
1426 16, /* rightshift */
1427 1, /* size (0 = byte, 1 = short, 2 = long) */
1429 FALSE, /* pc_relative */
1431 complain_overflow_signed, /* complain_on_overflow */
1432 ppc64_elf_unhandled_reloc, /* special_function */
1433 "R_PPC64_DTPREL16_HA", /* name */
1434 FALSE, /* partial_inplace */
1436 0xffff, /* dst_mask */
1437 FALSE), /* pcrel_offset */
1439 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1440 HOWTO (R_PPC64_DTPREL16_HIGHER,
1441 32, /* rightshift */
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 FALSE, /* pc_relative */
1446 complain_overflow_dont, /* complain_on_overflow */
1447 ppc64_elf_unhandled_reloc, /* special_function */
1448 "R_PPC64_DTPREL16_HIGHER", /* name */
1449 FALSE, /* partial_inplace */
1451 0xffff, /* dst_mask */
1452 FALSE), /* pcrel_offset */
1454 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1455 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1456 32, /* rightshift */
1457 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 FALSE, /* pc_relative */
1461 complain_overflow_dont, /* complain_on_overflow */
1462 ppc64_elf_unhandled_reloc, /* special_function */
1463 "R_PPC64_DTPREL16_HIGHERA", /* name */
1464 FALSE, /* partial_inplace */
1466 0xffff, /* dst_mask */
1467 FALSE), /* pcrel_offset */
1469 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1470 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1471 48, /* rightshift */
1472 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 FALSE, /* pc_relative */
1476 complain_overflow_dont, /* complain_on_overflow */
1477 ppc64_elf_unhandled_reloc, /* special_function */
1478 "R_PPC64_DTPREL16_HIGHEST", /* name */
1479 FALSE, /* partial_inplace */
1481 0xffff, /* dst_mask */
1482 FALSE), /* pcrel_offset */
1484 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1485 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1486 48, /* rightshift */
1487 1, /* size (0 = byte, 1 = short, 2 = long) */
1489 FALSE, /* pc_relative */
1491 complain_overflow_dont, /* complain_on_overflow */
1492 ppc64_elf_unhandled_reloc, /* special_function */
1493 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1494 FALSE, /* partial_inplace */
1496 0xffff, /* dst_mask */
1497 FALSE), /* pcrel_offset */
1499 /* Like DTPREL16, but for insns with a DS field. */
1500 HOWTO (R_PPC64_DTPREL16_DS,
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE, /* pc_relative */
1506 complain_overflow_signed, /* complain_on_overflow */
1507 ppc64_elf_unhandled_reloc, /* special_function */
1508 "R_PPC64_DTPREL16_DS", /* name */
1509 FALSE, /* partial_inplace */
1511 0xfffc, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1514 /* Like DTPREL16_DS, but no overflow. */
1515 HOWTO (R_PPC64_DTPREL16_LO_DS,
1517 1, /* size (0 = byte, 1 = short, 2 = long) */
1519 FALSE, /* pc_relative */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 ppc64_elf_unhandled_reloc, /* special_function */
1523 "R_PPC64_DTPREL16_LO_DS", /* name */
1524 FALSE, /* partial_inplace */
1526 0xfffc, /* dst_mask */
1527 FALSE), /* pcrel_offset */
1529 /* Computes a tp-relative displacement, the difference between the value of
1530 sym+add and the value of the thread pointer (r13). */
1531 HOWTO (R_PPC64_TPREL64,
1533 4, /* size (0 = byte, 1 = short, 2 = long) */
1535 FALSE, /* pc_relative */
1537 complain_overflow_dont, /* complain_on_overflow */
1538 ppc64_elf_unhandled_reloc, /* special_function */
1539 "R_PPC64_TPREL64", /* name */
1540 FALSE, /* partial_inplace */
1542 ONES (64), /* dst_mask */
1543 FALSE), /* pcrel_offset */
1545 /* A 16 bit tprel reloc. */
1546 HOWTO (R_PPC64_TPREL16,
1548 1, /* size (0 = byte, 1 = short, 2 = long) */
1550 FALSE, /* pc_relative */
1552 complain_overflow_signed, /* complain_on_overflow */
1553 ppc64_elf_unhandled_reloc, /* special_function */
1554 "R_PPC64_TPREL16", /* name */
1555 FALSE, /* partial_inplace */
1557 0xffff, /* dst_mask */
1558 FALSE), /* pcrel_offset */
1560 /* Like TPREL16, but no overflow. */
1561 HOWTO (R_PPC64_TPREL16_LO,
1563 1, /* size (0 = byte, 1 = short, 2 = long) */
1565 FALSE, /* pc_relative */
1567 complain_overflow_dont, /* complain_on_overflow */
1568 ppc64_elf_unhandled_reloc, /* special_function */
1569 "R_PPC64_TPREL16_LO", /* name */
1570 FALSE, /* partial_inplace */
1572 0xffff, /* dst_mask */
1573 FALSE), /* pcrel_offset */
1575 /* Like TPREL16_LO, but next higher group of 16 bits. */
1576 HOWTO (R_PPC64_TPREL16_HI,
1577 16, /* rightshift */
1578 1, /* size (0 = byte, 1 = short, 2 = long) */
1580 FALSE, /* pc_relative */
1582 complain_overflow_signed, /* complain_on_overflow */
1583 ppc64_elf_unhandled_reloc, /* special_function */
1584 "R_PPC64_TPREL16_HI", /* name */
1585 FALSE, /* partial_inplace */
1587 0xffff, /* dst_mask */
1588 FALSE), /* pcrel_offset */
1590 /* Like TPREL16_HI, but adjust for low 16 bits. */
1591 HOWTO (R_PPC64_TPREL16_HA,
1592 16, /* rightshift */
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1595 FALSE, /* pc_relative */
1597 complain_overflow_signed, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc, /* special_function */
1599 "R_PPC64_TPREL16_HA", /* name */
1600 FALSE, /* partial_inplace */
1602 0xffff, /* dst_mask */
1603 FALSE), /* pcrel_offset */
1605 /* Like TPREL16_HI, but next higher group of 16 bits. */
1606 HOWTO (R_PPC64_TPREL16_HIGHER,
1607 32, /* rightshift */
1608 1, /* size (0 = byte, 1 = short, 2 = long) */
1610 FALSE, /* pc_relative */
1612 complain_overflow_dont, /* complain_on_overflow */
1613 ppc64_elf_unhandled_reloc, /* special_function */
1614 "R_PPC64_TPREL16_HIGHER", /* name */
1615 FALSE, /* partial_inplace */
1617 0xffff, /* dst_mask */
1618 FALSE), /* pcrel_offset */
1620 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1621 HOWTO (R_PPC64_TPREL16_HIGHERA,
1622 32, /* rightshift */
1623 1, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE, /* pc_relative */
1627 complain_overflow_dont, /* complain_on_overflow */
1628 ppc64_elf_unhandled_reloc, /* special_function */
1629 "R_PPC64_TPREL16_HIGHERA", /* name */
1630 FALSE, /* partial_inplace */
1632 0xffff, /* dst_mask */
1633 FALSE), /* pcrel_offset */
1635 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1636 HOWTO (R_PPC64_TPREL16_HIGHEST,
1637 48, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE, /* pc_relative */
1642 complain_overflow_dont, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc, /* special_function */
1644 "R_PPC64_TPREL16_HIGHEST", /* name */
1645 FALSE, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE), /* pcrel_offset */
1650 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1651 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1652 48, /* rightshift */
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE, /* pc_relative */
1657 complain_overflow_dont, /* complain_on_overflow */
1658 ppc64_elf_unhandled_reloc, /* special_function */
1659 "R_PPC64_TPREL16_HIGHESTA", /* name */
1660 FALSE, /* partial_inplace */
1662 0xffff, /* dst_mask */
1663 FALSE), /* pcrel_offset */
1665 /* Like TPREL16, but for insns with a DS field. */
1666 HOWTO (R_PPC64_TPREL16_DS,
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 FALSE, /* pc_relative */
1672 complain_overflow_signed, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc, /* special_function */
1674 "R_PPC64_TPREL16_DS", /* name */
1675 FALSE, /* partial_inplace */
1677 0xfffc, /* dst_mask */
1678 FALSE), /* pcrel_offset */
1680 /* Like TPREL16_DS, but no overflow. */
1681 HOWTO (R_PPC64_TPREL16_LO_DS,
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 FALSE, /* pc_relative */
1687 complain_overflow_dont, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc, /* special_function */
1689 "R_PPC64_TPREL16_LO_DS", /* name */
1690 FALSE, /* partial_inplace */
1692 0xfffc, /* dst_mask */
1693 FALSE), /* pcrel_offset */
1695 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1696 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1697 to the first entry relative to the TOC base (r2). */
1698 HOWTO (R_PPC64_GOT_TLSGD16,
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE, /* pc_relative */
1704 complain_overflow_signed, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc, /* special_function */
1706 "R_PPC64_GOT_TLSGD16", /* name */
1707 FALSE, /* partial_inplace */
1709 0xffff, /* dst_mask */
1710 FALSE), /* pcrel_offset */
1712 /* Like GOT_TLSGD16, but no overflow. */
1713 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1715 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 FALSE, /* pc_relative */
1719 complain_overflow_dont, /* complain_on_overflow */
1720 ppc64_elf_unhandled_reloc, /* special_function */
1721 "R_PPC64_GOT_TLSGD16_LO", /* name */
1722 FALSE, /* partial_inplace */
1724 0xffff, /* dst_mask */
1725 FALSE), /* pcrel_offset */
1727 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1728 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1729 16, /* rightshift */
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 FALSE, /* pc_relative */
1734 complain_overflow_signed, /* complain_on_overflow */
1735 ppc64_elf_unhandled_reloc, /* special_function */
1736 "R_PPC64_GOT_TLSGD16_HI", /* name */
1737 FALSE, /* partial_inplace */
1739 0xffff, /* dst_mask */
1740 FALSE), /* pcrel_offset */
1742 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1743 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1744 16, /* rightshift */
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 FALSE, /* pc_relative */
1749 complain_overflow_signed, /* complain_on_overflow */
1750 ppc64_elf_unhandled_reloc, /* special_function */
1751 "R_PPC64_GOT_TLSGD16_HA", /* name */
1752 FALSE, /* partial_inplace */
1754 0xffff, /* dst_mask */
1755 FALSE), /* pcrel_offset */
1757 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1758 with values (sym+add)@dtpmod and zero, and computes the offset to the
1759 first entry relative to the TOC base (r2). */
1760 HOWTO (R_PPC64_GOT_TLSLD16,
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1764 FALSE, /* pc_relative */
1766 complain_overflow_signed, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc, /* special_function */
1768 "R_PPC64_GOT_TLSLD16", /* name */
1769 FALSE, /* partial_inplace */
1771 0xffff, /* dst_mask */
1772 FALSE), /* pcrel_offset */
1774 /* Like GOT_TLSLD16, but no overflow. */
1775 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1779 FALSE, /* pc_relative */
1781 complain_overflow_dont, /* complain_on_overflow */
1782 ppc64_elf_unhandled_reloc, /* special_function */
1783 "R_PPC64_GOT_TLSLD16_LO", /* name */
1784 FALSE, /* partial_inplace */
1786 0xffff, /* dst_mask */
1787 FALSE), /* pcrel_offset */
1789 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1790 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1791 16, /* rightshift */
1792 1, /* size (0 = byte, 1 = short, 2 = long) */
1794 FALSE, /* pc_relative */
1796 complain_overflow_signed, /* complain_on_overflow */
1797 ppc64_elf_unhandled_reloc, /* special_function */
1798 "R_PPC64_GOT_TLSLD16_HI", /* name */
1799 FALSE, /* partial_inplace */
1801 0xffff, /* dst_mask */
1802 FALSE), /* pcrel_offset */
1804 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1805 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1806 16, /* rightshift */
1807 1, /* size (0 = byte, 1 = short, 2 = long) */
1809 FALSE, /* pc_relative */
1811 complain_overflow_signed, /* complain_on_overflow */
1812 ppc64_elf_unhandled_reloc, /* special_function */
1813 "R_PPC64_GOT_TLSLD16_HA", /* name */
1814 FALSE, /* partial_inplace */
1816 0xffff, /* dst_mask */
1817 FALSE), /* pcrel_offset */
1819 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1820 the offset to the entry relative to the TOC base (r2). */
1821 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1823 1, /* size (0 = byte, 1 = short, 2 = long) */
1825 FALSE, /* pc_relative */
1827 complain_overflow_signed, /* complain_on_overflow */
1828 ppc64_elf_unhandled_reloc, /* special_function */
1829 "R_PPC64_GOT_DTPREL16_DS", /* name */
1830 FALSE, /* partial_inplace */
1832 0xfffc, /* dst_mask */
1833 FALSE), /* pcrel_offset */
1835 /* Like GOT_DTPREL16_DS, but no overflow. */
1836 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1838 1, /* size (0 = byte, 1 = short, 2 = long) */
1840 FALSE, /* pc_relative */
1842 complain_overflow_dont, /* complain_on_overflow */
1843 ppc64_elf_unhandled_reloc, /* special_function */
1844 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1845 FALSE, /* partial_inplace */
1847 0xfffc, /* dst_mask */
1848 FALSE), /* pcrel_offset */
1850 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1851 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1852 16, /* rightshift */
1853 1, /* size (0 = byte, 1 = short, 2 = long) */
1855 FALSE, /* pc_relative */
1857 complain_overflow_signed, /* complain_on_overflow */
1858 ppc64_elf_unhandled_reloc, /* special_function */
1859 "R_PPC64_GOT_DTPREL16_HI", /* name */
1860 FALSE, /* partial_inplace */
1862 0xffff, /* dst_mask */
1863 FALSE), /* pcrel_offset */
1865 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1866 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1867 16, /* rightshift */
1868 1, /* size (0 = byte, 1 = short, 2 = long) */
1870 FALSE, /* pc_relative */
1872 complain_overflow_signed, /* complain_on_overflow */
1873 ppc64_elf_unhandled_reloc, /* special_function */
1874 "R_PPC64_GOT_DTPREL16_HA", /* name */
1875 FALSE, /* partial_inplace */
1877 0xffff, /* dst_mask */
1878 FALSE), /* pcrel_offset */
1880 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1881 offset to the entry relative to the TOC base (r2). */
1882 HOWTO (R_PPC64_GOT_TPREL16_DS,
1884 1, /* size (0 = byte, 1 = short, 2 = long) */
1886 FALSE, /* pc_relative */
1888 complain_overflow_signed, /* complain_on_overflow */
1889 ppc64_elf_unhandled_reloc, /* special_function */
1890 "R_PPC64_GOT_TPREL16_DS", /* name */
1891 FALSE, /* partial_inplace */
1893 0xfffc, /* dst_mask */
1894 FALSE), /* pcrel_offset */
1896 /* Like GOT_TPREL16_DS, but no overflow. */
1897 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1899 1, /* size (0 = byte, 1 = short, 2 = long) */
1901 FALSE, /* pc_relative */
1903 complain_overflow_dont, /* complain_on_overflow */
1904 ppc64_elf_unhandled_reloc, /* special_function */
1905 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1906 FALSE, /* partial_inplace */
1908 0xfffc, /* dst_mask */
1909 FALSE), /* pcrel_offset */
1911 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1912 HOWTO (R_PPC64_GOT_TPREL16_HI,
1913 16, /* rightshift */
1914 1, /* size (0 = byte, 1 = short, 2 = long) */
1916 FALSE, /* pc_relative */
1918 complain_overflow_signed, /* complain_on_overflow */
1919 ppc64_elf_unhandled_reloc, /* special_function */
1920 "R_PPC64_GOT_TPREL16_HI", /* name */
1921 FALSE, /* partial_inplace */
1923 0xffff, /* dst_mask */
1924 FALSE), /* pcrel_offset */
1926 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1927 HOWTO (R_PPC64_GOT_TPREL16_HA,
1928 16, /* rightshift */
1929 1, /* size (0 = byte, 1 = short, 2 = long) */
1931 FALSE, /* pc_relative */
1933 complain_overflow_signed, /* complain_on_overflow */
1934 ppc64_elf_unhandled_reloc, /* special_function */
1935 "R_PPC64_GOT_TPREL16_HA", /* name */
1936 FALSE, /* partial_inplace */
1938 0xffff, /* dst_mask */
1939 FALSE), /* pcrel_offset */
1941 HOWTO (R_PPC64_JMP_IREL, /* type */
1943 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1945 FALSE, /* pc_relative */
1947 complain_overflow_dont, /* complain_on_overflow */
1948 ppc64_elf_unhandled_reloc, /* special_function */
1949 "R_PPC64_JMP_IREL", /* name */
1950 FALSE, /* partial_inplace */
1953 FALSE), /* pcrel_offset */
1955 HOWTO (R_PPC64_IRELATIVE, /* type */
1957 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1959 FALSE, /* pc_relative */
1961 complain_overflow_dont, /* complain_on_overflow */
1962 bfd_elf_generic_reloc, /* special_function */
1963 "R_PPC64_IRELATIVE", /* name */
1964 FALSE, /* partial_inplace */
1966 ONES (64), /* dst_mask */
1967 FALSE), /* pcrel_offset */
1969 /* A 16 bit relative relocation. */
1970 HOWTO (R_PPC64_REL16, /* type */
1972 1, /* size (0 = byte, 1 = short, 2 = long) */
1974 TRUE, /* pc_relative */
1976 complain_overflow_signed, /* complain_on_overflow */
1977 bfd_elf_generic_reloc, /* special_function */
1978 "R_PPC64_REL16", /* name */
1979 FALSE, /* partial_inplace */
1981 0xffff, /* dst_mask */
1982 TRUE), /* pcrel_offset */
1984 /* A 16 bit relative relocation without overflow. */
1985 HOWTO (R_PPC64_REL16_LO, /* type */
1987 1, /* size (0 = byte, 1 = short, 2 = long) */
1989 TRUE, /* pc_relative */
1991 complain_overflow_dont,/* complain_on_overflow */
1992 bfd_elf_generic_reloc, /* special_function */
1993 "R_PPC64_REL16_LO", /* name */
1994 FALSE, /* partial_inplace */
1996 0xffff, /* dst_mask */
1997 TRUE), /* pcrel_offset */
1999 /* The high order 16 bits of a relative address. */
2000 HOWTO (R_PPC64_REL16_HI, /* type */
2001 16, /* rightshift */
2002 1, /* size (0 = byte, 1 = short, 2 = long) */
2004 TRUE, /* pc_relative */
2006 complain_overflow_signed, /* complain_on_overflow */
2007 bfd_elf_generic_reloc, /* special_function */
2008 "R_PPC64_REL16_HI", /* name */
2009 FALSE, /* partial_inplace */
2011 0xffff, /* dst_mask */
2012 TRUE), /* pcrel_offset */
2014 /* The high order 16 bits of a relative address, plus 1 if the contents of
2015 the low 16 bits, treated as a signed number, is negative. */
2016 HOWTO (R_PPC64_REL16_HA, /* type */
2017 16, /* rightshift */
2018 1, /* size (0 = byte, 1 = short, 2 = long) */
2020 TRUE, /* pc_relative */
2022 complain_overflow_signed, /* complain_on_overflow */
2023 ppc64_elf_ha_reloc, /* special_function */
2024 "R_PPC64_REL16_HA", /* name */
2025 FALSE, /* partial_inplace */
2027 0xffff, /* dst_mask */
2028 TRUE), /* pcrel_offset */
2030 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2031 HOWTO (R_PPC64_REL16DX_HA, /* type */
2032 16, /* rightshift */
2033 2, /* size (0 = byte, 1 = short, 2 = long) */
2035 TRUE, /* pc_relative */
2037 complain_overflow_signed, /* complain_on_overflow */
2038 ppc64_elf_ha_reloc, /* special_function */
2039 "R_PPC64_REL16DX_HA", /* name */
2040 FALSE, /* partial_inplace */
2042 0x1fffc1, /* dst_mask */
2043 TRUE), /* pcrel_offset */
2045 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2046 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2047 16, /* rightshift */
2048 1, /* size (0 = byte, 1 = short, 2 = long) */
2050 FALSE, /* pc_relative */
2052 complain_overflow_dont, /* complain_on_overflow */
2053 bfd_elf_generic_reloc, /* special_function */
2054 "R_PPC64_ADDR16_HIGH", /* name */
2055 FALSE, /* partial_inplace */
2057 0xffff, /* dst_mask */
2058 FALSE), /* pcrel_offset */
2060 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2061 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2062 16, /* rightshift */
2063 1, /* size (0 = byte, 1 = short, 2 = long) */
2065 FALSE, /* pc_relative */
2067 complain_overflow_dont, /* complain_on_overflow */
2068 ppc64_elf_ha_reloc, /* special_function */
2069 "R_PPC64_ADDR16_HIGHA", /* name */
2070 FALSE, /* partial_inplace */
2072 0xffff, /* dst_mask */
2073 FALSE), /* pcrel_offset */
2075 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2076 HOWTO (R_PPC64_DTPREL16_HIGH,
2077 16, /* rightshift */
2078 1, /* size (0 = byte, 1 = short, 2 = long) */
2080 FALSE, /* pc_relative */
2082 complain_overflow_dont, /* complain_on_overflow */
2083 ppc64_elf_unhandled_reloc, /* special_function */
2084 "R_PPC64_DTPREL16_HIGH", /* name */
2085 FALSE, /* partial_inplace */
2087 0xffff, /* dst_mask */
2088 FALSE), /* pcrel_offset */
2090 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2091 HOWTO (R_PPC64_DTPREL16_HIGHA,
2092 16, /* rightshift */
2093 1, /* size (0 = byte, 1 = short, 2 = long) */
2095 FALSE, /* pc_relative */
2097 complain_overflow_dont, /* complain_on_overflow */
2098 ppc64_elf_unhandled_reloc, /* special_function */
2099 "R_PPC64_DTPREL16_HIGHA", /* name */
2100 FALSE, /* partial_inplace */
2102 0xffff, /* dst_mask */
2103 FALSE), /* pcrel_offset */
2105 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2106 HOWTO (R_PPC64_TPREL16_HIGH,
2107 16, /* rightshift */
2108 1, /* size (0 = byte, 1 = short, 2 = long) */
2110 FALSE, /* pc_relative */
2112 complain_overflow_dont, /* complain_on_overflow */
2113 ppc64_elf_unhandled_reloc, /* special_function */
2114 "R_PPC64_TPREL16_HIGH", /* name */
2115 FALSE, /* partial_inplace */
2117 0xffff, /* dst_mask */
2118 FALSE), /* pcrel_offset */
2120 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2121 HOWTO (R_PPC64_TPREL16_HIGHA,
2122 16, /* rightshift */
2123 1, /* size (0 = byte, 1 = short, 2 = long) */
2125 FALSE, /* pc_relative */
2127 complain_overflow_dont, /* complain_on_overflow */
2128 ppc64_elf_unhandled_reloc, /* special_function */
2129 "R_PPC64_TPREL16_HIGHA", /* name */
2130 FALSE, /* partial_inplace */
2132 0xffff, /* dst_mask */
2133 FALSE), /* pcrel_offset */
2135 /* Marker reloc on ELFv2 large-model function entry. */
2136 HOWTO (R_PPC64_ENTRY,
2138 2, /* size (0 = byte, 1 = short, 2 = long) */
2140 FALSE, /* pc_relative */
2142 complain_overflow_dont, /* complain_on_overflow */
2143 bfd_elf_generic_reloc, /* special_function */
2144 "R_PPC64_ENTRY", /* name */
2145 FALSE, /* partial_inplace */
2148 FALSE), /* pcrel_offset */
2150 /* Like ADDR64, but use local entry point of function. */
2151 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2153 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2155 FALSE, /* pc_relative */
2157 complain_overflow_dont, /* complain_on_overflow */
2158 bfd_elf_generic_reloc, /* special_function */
2159 "R_PPC64_ADDR64_LOCAL", /* name */
2160 FALSE, /* partial_inplace */
2162 ONES (64), /* dst_mask */
2163 FALSE), /* pcrel_offset */
2165 /* GNU extension to record C++ vtable hierarchy. */
2166 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2168 0, /* size (0 = byte, 1 = short, 2 = long) */
2170 FALSE, /* pc_relative */
2172 complain_overflow_dont, /* complain_on_overflow */
2173 NULL, /* special_function */
2174 "R_PPC64_GNU_VTINHERIT", /* name */
2175 FALSE, /* partial_inplace */
2178 FALSE), /* pcrel_offset */
2180 /* GNU extension to record C++ vtable member usage. */
2181 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2183 0, /* size (0 = byte, 1 = short, 2 = long) */
2185 FALSE, /* pc_relative */
2187 complain_overflow_dont, /* complain_on_overflow */
2188 NULL, /* special_function */
2189 "R_PPC64_GNU_VTENTRY", /* name */
2190 FALSE, /* partial_inplace */
2193 FALSE), /* pcrel_offset */
2197 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2201 ppc_howto_init (void)
2203 unsigned int i, type;
2205 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2207 type = ppc64_elf_howto_raw[i].type;
2208 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
2209 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2213 static reloc_howto_type *
2214 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2215 bfd_reloc_code_real_type code)
2217 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2219 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2220 /* Initialize howto table if needed. */
2228 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2230 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2232 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2234 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2236 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2238 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2240 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2242 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2244 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2246 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2248 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2250 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2252 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2254 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2256 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2258 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2260 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2262 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2264 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2266 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2268 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2270 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2272 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2274 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2276 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2278 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2280 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2282 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2284 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2286 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2288 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2290 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2292 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2294 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2296 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2298 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2300 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2302 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2304 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2306 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2308 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2310 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2312 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2314 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2316 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2318 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2320 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2322 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2324 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2326 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2328 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2330 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2332 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2334 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2336 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2338 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2340 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2342 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2344 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2346 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2348 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2350 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2352 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2354 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2356 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2358 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2360 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2362 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2364 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2366 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2368 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2370 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2372 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2374 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2376 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2378 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2380 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2382 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2384 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2386 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2388 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2390 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2392 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2394 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2396 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2398 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2400 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2402 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2404 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2406 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2408 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2410 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2412 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2414 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2416 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2418 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2420 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2422 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2424 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2426 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2428 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2430 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2432 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2434 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2436 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2438 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2440 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2442 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2444 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2446 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2448 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2450 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2452 case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
2454 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2456 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2458 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2462 return ppc64_elf_howto_table[r];
2465 static reloc_howto_type *
2466 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2471 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2472 if (ppc64_elf_howto_raw[i].name != NULL
2473 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2474 return &ppc64_elf_howto_raw[i];
2479 /* Set the howto pointer for a PowerPC ELF reloc. */
2482 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2483 Elf_Internal_Rela *dst)
2487 /* Initialize howto table if needed. */
2488 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2491 type = ELF64_R_TYPE (dst->r_info);
2492 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
2494 /* xgettext:c-format */
2495 _bfd_error_handler (_("%B: invalid relocation type %d"),
2497 type = R_PPC64_NONE;
2499 cache_ptr->howto = ppc64_elf_howto_table[type];
2502 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2504 static bfd_reloc_status_type
2505 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2506 void *data, asection *input_section,
2507 bfd *output_bfd, char **error_message)
2509 enum elf_ppc64_reloc_type r_type;
2511 bfd_size_type octets;
2514 /* If this is a relocatable link (output_bfd test tells us), just
2515 call the generic function. Any adjustment will be done at final
2517 if (output_bfd != NULL)
2518 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2519 input_section, output_bfd, error_message);
2521 /* Adjust the addend for sign extension of the low 16 bits.
2522 We won't actually be using the low 16 bits, so trashing them
2524 reloc_entry->addend += 0x8000;
2525 r_type = reloc_entry->howto->type;
2526 if (r_type != R_PPC64_REL16DX_HA)
2527 return bfd_reloc_continue;
2530 if (!bfd_is_com_section (symbol->section))
2531 value = symbol->value;
2532 value += (reloc_entry->addend
2533 + symbol->section->output_offset
2534 + symbol->section->output_section->vma);
2535 value -= (reloc_entry->address
2536 + input_section->output_offset
2537 + input_section->output_section->vma);
2538 value = (bfd_signed_vma) value >> 16;
2540 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2541 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2543 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2544 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2545 if (value + 0x8000 > 0xffff)
2546 return bfd_reloc_overflow;
2547 return bfd_reloc_ok;
2550 static bfd_reloc_status_type
2551 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2552 void *data, asection *input_section,
2553 bfd *output_bfd, char **error_message)
2555 if (output_bfd != NULL)
2556 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2557 input_section, output_bfd, error_message);
2559 if (strcmp (symbol->section->name, ".opd") == 0
2560 && (symbol->section->owner->flags & DYNAMIC) == 0)
2562 bfd_vma dest = opd_entry_value (symbol->section,
2563 symbol->value + reloc_entry->addend,
2565 if (dest != (bfd_vma) -1)
2566 reloc_entry->addend = dest - (symbol->value
2567 + symbol->section->output_section->vma
2568 + symbol->section->output_offset);
2572 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2574 if (symbol->section->owner != abfd
2575 && symbol->section->owner != NULL
2576 && abiversion (symbol->section->owner) >= 2)
2580 for (i = 0; i < symbol->section->owner->symcount; ++i)
2582 asymbol *symdef = symbol->section->owner->outsymbols[i];
2584 if (strcmp (symdef->name, symbol->name) == 0)
2586 elfsym = (elf_symbol_type *) symdef;
2592 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2594 return bfd_reloc_continue;
2597 static bfd_reloc_status_type
2598 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2599 void *data, asection *input_section,
2600 bfd *output_bfd, char **error_message)
2603 enum elf_ppc64_reloc_type r_type;
2604 bfd_size_type octets;
2605 /* Assume 'at' branch hints. */
2606 bfd_boolean is_isa_v2 = TRUE;
2608 /* If this is a relocatable link (output_bfd test tells us), just
2609 call the generic function. Any adjustment will be done at final
2611 if (output_bfd != NULL)
2612 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2613 input_section, output_bfd, error_message);
2615 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2616 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2617 insn &= ~(0x01 << 21);
2618 r_type = reloc_entry->howto->type;
2619 if (r_type == R_PPC64_ADDR14_BRTAKEN
2620 || r_type == R_PPC64_REL14_BRTAKEN)
2621 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2625 /* Set 'a' bit. This is 0b00010 in BO field for branch
2626 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2627 for branch on CTR insns (BO == 1a00t or 1a01t). */
2628 if ((insn & (0x14 << 21)) == (0x04 << 21))
2630 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2640 if (!bfd_is_com_section (symbol->section))
2641 target = symbol->value;
2642 target += symbol->section->output_section->vma;
2643 target += symbol->section->output_offset;
2644 target += reloc_entry->addend;
2646 from = (reloc_entry->address
2647 + input_section->output_offset
2648 + input_section->output_section->vma);
2650 /* Invert 'y' bit if not the default. */
2651 if ((bfd_signed_vma) (target - from) < 0)
2654 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2656 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2657 input_section, output_bfd, error_message);
2660 static bfd_reloc_status_type
2661 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2662 void *data, asection *input_section,
2663 bfd *output_bfd, char **error_message)
2665 /* If this is a relocatable link (output_bfd test tells us), just
2666 call the generic function. Any adjustment will be done at final
2668 if (output_bfd != NULL)
2669 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2670 input_section, output_bfd, error_message);
2672 /* Subtract the symbol section base address. */
2673 reloc_entry->addend -= symbol->section->output_section->vma;
2674 return bfd_reloc_continue;
2677 static bfd_reloc_status_type
2678 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2679 void *data, asection *input_section,
2680 bfd *output_bfd, char **error_message)
2682 /* If this is a relocatable link (output_bfd test tells us), just
2683 call the generic function. Any adjustment will be done at final
2685 if (output_bfd != NULL)
2686 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2687 input_section, output_bfd, error_message);
2689 /* Subtract the symbol section base address. */
2690 reloc_entry->addend -= symbol->section->output_section->vma;
2692 /* Adjust the addend for sign extension of the low 16 bits. */
2693 reloc_entry->addend += 0x8000;
2694 return bfd_reloc_continue;
2697 static bfd_reloc_status_type
2698 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2699 void *data, asection *input_section,
2700 bfd *output_bfd, char **error_message)
2704 /* If this is a relocatable link (output_bfd test tells us), just
2705 call the generic function. Any adjustment will be done at final
2707 if (output_bfd != NULL)
2708 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2709 input_section, output_bfd, error_message);
2711 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2713 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2715 /* Subtract the TOC base address. */
2716 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2717 return bfd_reloc_continue;
2720 static bfd_reloc_status_type
2721 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2722 void *data, asection *input_section,
2723 bfd *output_bfd, char **error_message)
2727 /* If this is a relocatable link (output_bfd test tells us), just
2728 call the generic function. Any adjustment will be done at final
2730 if (output_bfd != NULL)
2731 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2732 input_section, output_bfd, error_message);
2734 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2736 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2738 /* Subtract the TOC base address. */
2739 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2741 /* Adjust the addend for sign extension of the low 16 bits. */
2742 reloc_entry->addend += 0x8000;
2743 return bfd_reloc_continue;
2746 static bfd_reloc_status_type
2747 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2748 void *data, asection *input_section,
2749 bfd *output_bfd, char **error_message)
2752 bfd_size_type octets;
2754 /* If this is a relocatable link (output_bfd test tells us), just
2755 call the generic function. Any adjustment will be done at final
2757 if (output_bfd != NULL)
2758 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2759 input_section, output_bfd, error_message);
2761 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2763 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2765 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2766 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2767 return bfd_reloc_ok;
2770 static bfd_reloc_status_type
2771 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2772 void *data, asection *input_section,
2773 bfd *output_bfd, char **error_message)
2775 /* If this is a relocatable link (output_bfd test tells us), just
2776 call the generic function. Any adjustment will be done at final
2778 if (output_bfd != NULL)
2779 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2780 input_section, output_bfd, error_message);
2782 if (error_message != NULL)
2784 static char buf[60];
2785 sprintf (buf, "generic linker can't handle %s",
2786 reloc_entry->howto->name);
2787 *error_message = buf;
2789 return bfd_reloc_dangerous;
2792 /* Track GOT entries needed for a given symbol. We might need more
2793 than one got entry per symbol. */
2796 struct got_entry *next;
2798 /* The symbol addend that we'll be placing in the GOT. */
2801 /* Unlike other ELF targets, we use separate GOT entries for the same
2802 symbol referenced from different input files. This is to support
2803 automatic multiple TOC/GOT sections, where the TOC base can vary
2804 from one input file to another. After partitioning into TOC groups
2805 we merge entries within the group.
2807 Point to the BFD owning this GOT entry. */
2810 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2811 TLS_TPREL or TLS_DTPREL for tls entries. */
2812 unsigned char tls_type;
2814 /* Non-zero if got.ent points to real entry. */
2815 unsigned char is_indirect;
2817 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2820 bfd_signed_vma refcount;
2822 struct got_entry *ent;
2826 /* The same for PLT. */
2829 struct plt_entry *next;
2835 bfd_signed_vma refcount;
2840 struct ppc64_elf_obj_tdata
2842 struct elf_obj_tdata elf;
2844 /* Shortcuts to dynamic linker sections. */
2848 /* Used during garbage collection. We attach global symbols defined
2849 on removed .opd entries to this section so that the sym is removed. */
2850 asection *deleted_section;
2852 /* TLS local dynamic got entry handling. Support for multiple GOT
2853 sections means we potentially need one of these for each input bfd. */
2854 struct got_entry tlsld_got;
2857 /* A copy of relocs before they are modified for --emit-relocs. */
2858 Elf_Internal_Rela *relocs;
2860 /* Section contents. */
2864 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2865 the reloc to be in the range -32768 to 32767. */
2866 unsigned int has_small_toc_reloc : 1;
2868 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2869 instruction not one we handle. */
2870 unsigned int unexpected_toc_insn : 1;
2873 #define ppc64_elf_tdata(bfd) \
2874 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2876 #define ppc64_tlsld_got(bfd) \
2877 (&ppc64_elf_tdata (bfd)->tlsld_got)
2879 #define is_ppc64_elf(bfd) \
2880 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2881 && elf_object_id (bfd) == PPC64_ELF_DATA)
2883 /* Override the generic function because we store some extras. */
2886 ppc64_elf_mkobject (bfd *abfd)
2888 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2892 /* Fix bad default arch selected for a 64 bit input bfd when the
2893 default is 32 bit. Also select arch based on apuinfo. */
2896 ppc64_elf_object_p (bfd *abfd)
2898 if (!abfd->arch_info->the_default)
2901 if (abfd->arch_info->bits_per_word == 32)
2903 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2905 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2907 /* Relies on arch after 32 bit default being 64 bit default. */
2908 abfd->arch_info = abfd->arch_info->next;
2909 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2912 return _bfd_elf_ppc_set_arch (abfd);
2915 /* Support for core dump NOTE sections. */
2918 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2920 size_t offset, size;
2922 if (note->descsz != 504)
2926 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2929 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2935 /* Make a ".reg/999" section. */
2936 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2937 size, note->descpos + offset);
2941 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2943 if (note->descsz != 136)
2946 elf_tdata (abfd)->core->pid
2947 = bfd_get_32 (abfd, note->descdata + 24);
2948 elf_tdata (abfd)->core->program
2949 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2950 elf_tdata (abfd)->core->command
2951 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2957 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2970 va_start (ap, note_type);
2971 memset (data, 0, sizeof (data));
2972 strncpy (data + 40, va_arg (ap, const char *), 16);
2973 strncpy (data + 56, va_arg (ap, const char *), 80);
2975 return elfcore_write_note (abfd, buf, bufsiz,
2976 "CORE", note_type, data, sizeof (data));
2987 va_start (ap, note_type);
2988 memset (data, 0, 112);
2989 pid = va_arg (ap, long);
2990 bfd_put_32 (abfd, pid, data + 32);
2991 cursig = va_arg (ap, int);
2992 bfd_put_16 (abfd, cursig, data + 12);
2993 greg = va_arg (ap, const void *);
2994 memcpy (data + 112, greg, 384);
2995 memset (data + 496, 0, 8);
2997 return elfcore_write_note (abfd, buf, bufsiz,
2998 "CORE", note_type, data, sizeof (data));
3003 /* Add extra PPC sections. */
3005 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
3007 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
3008 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3009 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3010 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3011 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3012 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3013 { NULL, 0, 0, 0, 0 }
3016 enum _ppc64_sec_type {
3022 struct _ppc64_elf_section_data
3024 struct bfd_elf_section_data elf;
3028 /* An array with one entry for each opd function descriptor,
3029 and some spares since opd entries may be either 16 or 24 bytes. */
3030 #define OPD_NDX(OFF) ((OFF) >> 4)
3031 struct _opd_sec_data
3033 /* Points to the function code section for local opd entries. */
3034 asection **func_sec;
3036 /* After editing .opd, adjust references to opd local syms. */
3040 /* An array for toc sections, indexed by offset/8. */
3041 struct _toc_sec_data
3043 /* Specifies the relocation symbol index used at a given toc offset. */
3046 /* And the relocation addend. */
3051 enum _ppc64_sec_type sec_type:2;
3053 /* Flag set when small branches are detected. Used to
3054 select suitable defaults for the stub group size. */
3055 unsigned int has_14bit_branch:1;
3058 #define ppc64_elf_section_data(sec) \
3059 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3062 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
3064 if (!sec->used_by_bfd)
3066 struct _ppc64_elf_section_data *sdata;
3067 bfd_size_type amt = sizeof (*sdata);
3069 sdata = bfd_zalloc (abfd, amt);
3072 sec->used_by_bfd = sdata;
3075 return _bfd_elf_new_section_hook (abfd, sec);
3078 static struct _opd_sec_data *
3079 get_opd_info (asection * sec)
3082 && ppc64_elf_section_data (sec) != NULL
3083 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3084 return &ppc64_elf_section_data (sec)->u.opd;
3088 /* Parameters for the qsort hook. */
3089 static bfd_boolean synthetic_relocatable;
3090 static asection *synthetic_opd;
3092 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3095 compare_symbols (const void *ap, const void *bp)
3097 const asymbol *a = * (const asymbol **) ap;
3098 const asymbol *b = * (const asymbol **) bp;
3100 /* Section symbols first. */
3101 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3103 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3106 /* then .opd symbols. */
3107 if (synthetic_opd != NULL)
3109 if (strcmp (a->section->name, ".opd") == 0
3110 && strcmp (b->section->name, ".opd") != 0)
3112 if (strcmp (a->section->name, ".opd") != 0
3113 && strcmp (b->section->name, ".opd") == 0)
3117 /* then other code symbols. */
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 ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3125 != (SEC_CODE | SEC_ALLOC)
3126 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3127 == (SEC_CODE | SEC_ALLOC))
3130 if (synthetic_relocatable)
3132 if (a->section->id < b->section->id)
3135 if (a->section->id > b->section->id)
3139 if (a->value + a->section->vma < b->value + b->section->vma)
3142 if (a->value + a->section->vma > b->value + b->section->vma)
3145 /* For syms with the same value, prefer strong dynamic global function
3146 syms over other syms. */
3147 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3150 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3153 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3156 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3159 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3162 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3165 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3168 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3174 /* Search SYMS for a symbol of the given VALUE. */
3177 sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
3181 if (id == (unsigned) -1)
3185 mid = (lo + hi) >> 1;
3186 if (syms[mid]->value + syms[mid]->section->vma < value)
3188 else if (syms[mid]->value + syms[mid]->section->vma > value)
3198 mid = (lo + hi) >> 1;
3199 if (syms[mid]->section->id < id)
3201 else if (syms[mid]->section->id > id)
3203 else if (syms[mid]->value < value)
3205 else if (syms[mid]->value > value)
3215 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3217 bfd_vma vma = *(bfd_vma *) ptr;
3218 return ((section->flags & SEC_ALLOC) != 0
3219 && section->vma <= vma
3220 && vma < section->vma + section->size);
3223 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3224 entry syms. Also generate @plt symbols for the glink branch table.
3225 Returns count of synthetic symbols in RET or -1 on error. */
3228 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3229 long static_count, asymbol **static_syms,
3230 long dyn_count, asymbol **dyn_syms,
3237 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3238 asection *opd = NULL;
3239 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3241 int abi = abiversion (abfd);
3247 opd = bfd_get_section_by_name (abfd, ".opd");
3248 if (opd == NULL && abi == 1)
3252 symcount = static_count;
3254 symcount += dyn_count;
3258 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3262 if (!relocatable && static_count != 0 && dyn_count != 0)
3264 /* Use both symbol tables. */
3265 memcpy (syms, static_syms, static_count * sizeof (*syms));
3266 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3268 else if (!relocatable && static_count == 0)
3269 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3271 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3273 synthetic_relocatable = relocatable;
3274 synthetic_opd = opd;
3275 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3277 if (!relocatable && symcount > 1)
3280 /* Trim duplicate syms, since we may have merged the normal and
3281 dynamic symbols. Actually, we only care about syms that have
3282 different values, so trim any with the same value. */
3283 for (i = 1, j = 1; i < symcount; ++i)
3284 if (syms[i - 1]->value + syms[i - 1]->section->vma
3285 != syms[i]->value + syms[i]->section->vma)
3286 syms[j++] = syms[i];
3291 /* Note that here and in compare_symbols we can't compare opd and
3292 sym->section directly. With separate debug info files, the
3293 symbols will be extracted from the debug file while abfd passed
3294 to this function is the real binary. */
3295 if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0)
3299 for (; i < symcount; ++i)
3300 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3301 != (SEC_CODE | SEC_ALLOC))
3302 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3306 for (; i < symcount; ++i)
3307 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3312 for (; i < symcount; ++i)
3313 if (strcmp (syms[i]->section->name, ".opd") != 0)
3317 for (; i < symcount; ++i)
3318 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3319 != (SEC_CODE | SEC_ALLOC))
3327 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3332 if (opdsymend == secsymend)
3335 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3336 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3340 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3347 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3351 while (r < opd->relocation + relcount
3352 && r->address < syms[i]->value + opd->vma)
3355 if (r == opd->relocation + relcount)
3358 if (r->address != syms[i]->value + opd->vma)
3361 if (r->howto->type != R_PPC64_ADDR64)
3364 sym = *r->sym_ptr_ptr;
3365 if (!sym_exists_at (syms, opdsymend, symcount,
3366 sym->section->id, sym->value + r->addend))
3369 size += sizeof (asymbol);
3370 size += strlen (syms[i]->name) + 2;
3376 s = *ret = bfd_malloc (size);
3383 names = (char *) (s + count);
3385 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3389 while (r < opd->relocation + relcount
3390 && r->address < syms[i]->value + opd->vma)
3393 if (r == opd->relocation + relcount)
3396 if (r->address != syms[i]->value + opd->vma)
3399 if (r->howto->type != R_PPC64_ADDR64)
3402 sym = *r->sym_ptr_ptr;
3403 if (!sym_exists_at (syms, opdsymend, symcount,
3404 sym->section->id, sym->value + r->addend))
3409 s->flags |= BSF_SYNTHETIC;
3410 s->section = sym->section;
3411 s->value = sym->value + r->addend;
3414 len = strlen (syms[i]->name);
3415 memcpy (names, syms[i]->name, len + 1);
3417 /* Have udata.p point back to the original symbol this
3418 synthetic symbol was derived from. */
3419 s->udata.p = syms[i];
3426 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3427 bfd_byte *contents = NULL;
3430 bfd_vma glink_vma = 0, resolv_vma = 0;
3431 asection *dynamic, *glink = NULL, *relplt = NULL;
3434 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3436 free_contents_and_exit_err:
3438 free_contents_and_exit:
3445 for (i = secsymend; i < opdsymend; ++i)
3449 /* Ignore bogus symbols. */
3450 if (syms[i]->value > opd->size - 8)
3453 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3454 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3457 size += sizeof (asymbol);
3458 size += strlen (syms[i]->name) + 2;
3462 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3464 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3466 bfd_byte *dynbuf, *extdyn, *extdynend;
3468 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3470 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3471 goto free_contents_and_exit_err;
3473 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3474 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3477 extdynend = extdyn + dynamic->size;
3478 for (; extdyn < extdynend; extdyn += extdynsize)
3480 Elf_Internal_Dyn dyn;
3481 (*swap_dyn_in) (abfd, extdyn, &dyn);
3483 if (dyn.d_tag == DT_NULL)
3486 if (dyn.d_tag == DT_PPC64_GLINK)
3488 /* The first glink stub starts at offset 32; see
3489 comment in ppc64_elf_finish_dynamic_sections. */
3490 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3491 /* The .glink section usually does not survive the final
3492 link; search for the section (usually .text) where the
3493 glink stubs now reside. */
3494 glink = bfd_sections_find_if (abfd, section_covers_vma,
3505 /* Determine __glink trampoline by reading the relative branch
3506 from the first glink stub. */
3508 unsigned int off = 0;
3510 while (bfd_get_section_contents (abfd, glink, buf,
3511 glink_vma + off - glink->vma, 4))
3513 unsigned int insn = bfd_get_32 (abfd, buf);
3515 if ((insn & ~0x3fffffc) == 0)
3517 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3526 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3528 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3531 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3532 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3533 goto free_contents_and_exit_err;
3535 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3536 size += plt_count * sizeof (asymbol);
3538 p = relplt->relocation;
3539 for (i = 0; i < plt_count; i++, p++)
3541 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3543 size += sizeof ("+0x") - 1 + 16;
3549 goto free_contents_and_exit;
3550 s = *ret = bfd_malloc (size);
3552 goto free_contents_and_exit_err;
3554 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3556 for (i = secsymend; i < opdsymend; ++i)
3560 if (syms[i]->value > opd->size - 8)
3563 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3564 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3568 asection *sec = abfd->sections;
3575 long mid = (lo + hi) >> 1;
3576 if (syms[mid]->section->vma < ent)
3578 else if (syms[mid]->section->vma > ent)
3582 sec = syms[mid]->section;
3587 if (lo >= hi && lo > codesecsym)
3588 sec = syms[lo - 1]->section;
3590 for (; sec != NULL; sec = sec->next)
3594 /* SEC_LOAD may not be set if SEC is from a separate debug
3596 if ((sec->flags & SEC_ALLOC) == 0)
3598 if ((sec->flags & SEC_CODE) != 0)
3601 s->flags |= BSF_SYNTHETIC;
3602 s->value = ent - s->section->vma;
3605 len = strlen (syms[i]->name);
3606 memcpy (names, syms[i]->name, len + 1);
3608 /* Have udata.p point back to the original symbol this
3609 synthetic symbol was derived from. */
3610 s->udata.p = syms[i];
3616 if (glink != NULL && relplt != NULL)
3620 /* Add a symbol for the main glink trampoline. */
3621 memset (s, 0, sizeof *s);
3623 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3625 s->value = resolv_vma - glink->vma;
3627 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3628 names += sizeof ("__glink_PLTresolve");
3633 /* FIXME: It would be very much nicer to put sym@plt on the
3634 stub rather than on the glink branch table entry. The
3635 objdump disassembler would then use a sensible symbol
3636 name on plt calls. The difficulty in doing so is
3637 a) finding the stubs, and,
3638 b) matching stubs against plt entries, and,
3639 c) there can be multiple stubs for a given plt entry.
3641 Solving (a) could be done by code scanning, but older
3642 ppc64 binaries used different stubs to current code.
3643 (b) is the tricky one since you need to known the toc
3644 pointer for at least one function that uses a pic stub to
3645 be able to calculate the plt address referenced.
3646 (c) means gdb would need to set multiple breakpoints (or
3647 find the glink branch itself) when setting breakpoints
3648 for pending shared library loads. */
3649 p = relplt->relocation;
3650 for (i = 0; i < plt_count; i++, p++)
3654 *s = **p->sym_ptr_ptr;
3655 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3656 we are defining a symbol, ensure one of them is set. */
3657 if ((s->flags & BSF_LOCAL) == 0)
3658 s->flags |= BSF_GLOBAL;
3659 s->flags |= BSF_SYNTHETIC;
3661 s->value = glink_vma - glink->vma;
3664 len = strlen ((*p->sym_ptr_ptr)->name);
3665 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3669 memcpy (names, "+0x", sizeof ("+0x") - 1);
3670 names += sizeof ("+0x") - 1;
3671 bfd_sprintf_vma (abfd, names, p->addend);
3672 names += strlen (names);
3674 memcpy (names, "@plt", sizeof ("@plt"));
3675 names += sizeof ("@plt");
3695 /* The following functions are specific to the ELF linker, while
3696 functions above are used generally. Those named ppc64_elf_* are
3697 called by the main ELF linker code. They appear in this file more
3698 or less in the order in which they are called. eg.
3699 ppc64_elf_check_relocs is called early in the link process,
3700 ppc64_elf_finish_dynamic_sections is one of the last functions
3703 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3704 functions have both a function code symbol and a function descriptor
3705 symbol. A call to foo in a relocatable object file looks like:
3712 The function definition in another object file might be:
3716 . .quad .TOC.@tocbase
3722 When the linker resolves the call during a static link, the branch
3723 unsurprisingly just goes to .foo and the .opd information is unused.
3724 If the function definition is in a shared library, things are a little
3725 different: The call goes via a plt call stub, the opd information gets
3726 copied to the plt, and the linker patches the nop.
3734 . std 2,40(1) # in practice, the call stub
3735 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3736 . addi 11,11,Lfoo@toc@l # this is the general idea
3744 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3746 The "reloc ()" notation is supposed to indicate that the linker emits
3747 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3750 What are the difficulties here? Well, firstly, the relocations
3751 examined by the linker in check_relocs are against the function code
3752 sym .foo, while the dynamic relocation in the plt is emitted against
3753 the function descriptor symbol, foo. Somewhere along the line, we need
3754 to carefully copy dynamic link information from one symbol to the other.
3755 Secondly, the generic part of the elf linker will make .foo a dynamic
3756 symbol as is normal for most other backends. We need foo dynamic
3757 instead, at least for an application final link. However, when
3758 creating a shared library containing foo, we need to have both symbols
3759 dynamic so that references to .foo are satisfied during the early
3760 stages of linking. Otherwise the linker might decide to pull in a
3761 definition from some other object, eg. a static library.
3763 Update: As of August 2004, we support a new convention. Function
3764 calls may use the function descriptor symbol, ie. "bl foo". This
3765 behaves exactly as "bl .foo". */
3767 /* Of those relocs that might be copied as dynamic relocs, this function
3768 selects those that must be copied when linking a shared library,
3769 even when the symbol is local. */
3772 must_be_dyn_reloc (struct bfd_link_info *info,
3773 enum elf_ppc64_reloc_type r_type)
3785 case R_PPC64_TPREL16:
3786 case R_PPC64_TPREL16_LO:
3787 case R_PPC64_TPREL16_HI:
3788 case R_PPC64_TPREL16_HA:
3789 case R_PPC64_TPREL16_DS:
3790 case R_PPC64_TPREL16_LO_DS:
3791 case R_PPC64_TPREL16_HIGH:
3792 case R_PPC64_TPREL16_HIGHA:
3793 case R_PPC64_TPREL16_HIGHER:
3794 case R_PPC64_TPREL16_HIGHERA:
3795 case R_PPC64_TPREL16_HIGHEST:
3796 case R_PPC64_TPREL16_HIGHESTA:
3797 case R_PPC64_TPREL64:
3798 return !bfd_link_executable (info);
3802 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3803 copying dynamic variables from a shared lib into an app's dynbss
3804 section, and instead use a dynamic relocation to point into the
3805 shared lib. With code that gcc generates, it's vital that this be
3806 enabled; In the PowerPC64 ABI, the address of a function is actually
3807 the address of a function descriptor, which resides in the .opd
3808 section. gcc uses the descriptor directly rather than going via the
3809 GOT as some other ABI's do, which means that initialized function
3810 pointers must reference the descriptor. Thus, a function pointer
3811 initialized to the address of a function in a shared library will
3812 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3813 redefines the function descriptor symbol to point to the copy. This
3814 presents a problem as a plt entry for that function is also
3815 initialized from the function descriptor symbol and the copy reloc
3816 may not be initialized first. */
3817 #define ELIMINATE_COPY_RELOCS 1
3819 /* Section name for stubs is the associated section name plus this
3821 #define STUB_SUFFIX ".stub"
3824 ppc_stub_long_branch:
3825 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3826 destination, but a 24 bit branch in a stub section will reach.
3829 ppc_stub_plt_branch:
3830 Similar to the above, but a 24 bit branch in the stub section won't
3831 reach its destination.
3832 . addis %r11,%r2,xxx@toc@ha
3833 . ld %r12,xxx@toc@l(%r11)
3838 Used to call a function in a shared library. If it so happens that
3839 the plt entry referenced crosses a 64k boundary, then an extra
3840 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3842 . addis %r11,%r2,xxx@toc@ha
3843 . ld %r12,xxx+0@toc@l(%r11)
3845 . ld %r2,xxx+8@toc@l(%r11)
3846 . ld %r11,xxx+16@toc@l(%r11)
3849 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3850 code to adjust the value and save r2 to support multiple toc sections.
3851 A ppc_stub_long_branch with an r2 offset looks like:
3853 . addis %r2,%r2,off@ha
3854 . addi %r2,%r2,off@l
3857 A ppc_stub_plt_branch with an r2 offset looks like:
3859 . addis %r11,%r2,xxx@toc@ha
3860 . ld %r12,xxx@toc@l(%r11)
3861 . addis %r2,%r2,off@ha
3862 . addi %r2,%r2,off@l
3866 In cases where the "addis" instruction would add zero, the "addis" is
3867 omitted and following instructions modified slightly in some cases.
3870 enum ppc_stub_type {
3872 ppc_stub_long_branch,
3873 ppc_stub_long_branch_r2off,
3874 ppc_stub_plt_branch,
3875 ppc_stub_plt_branch_r2off,
3877 ppc_stub_plt_call_r2save,
3878 ppc_stub_global_entry,
3882 /* Information on stub grouping. */
3885 /* The stub section. */
3887 /* This is the section to which stubs in the group will be attached. */
3890 struct map_stub *next;
3891 /* Whether to emit a copy of register save/restore functions in this
3896 struct ppc_stub_hash_entry {
3898 /* Base hash table entry structure. */
3899 struct bfd_hash_entry root;
3901 enum ppc_stub_type stub_type;
3903 /* Group information. */
3904 struct map_stub *group;
3906 /* Offset within stub_sec of the beginning of this stub. */
3907 bfd_vma stub_offset;
3909 /* Given the symbol's value and its section we can determine its final
3910 value when building the stubs (so the stub knows where to jump. */
3911 bfd_vma target_value;
3912 asection *target_section;
3914 /* The symbol table entry, if any, that this was derived from. */
3915 struct ppc_link_hash_entry *h;
3916 struct plt_entry *plt_ent;
3918 /* Symbol st_other. */
3919 unsigned char other;
3922 struct ppc_branch_hash_entry {
3924 /* Base hash table entry structure. */
3925 struct bfd_hash_entry root;
3927 /* Offset within branch lookup table. */
3928 unsigned int offset;
3930 /* Generation marker. */
3934 /* Used to track dynamic relocations for local symbols. */
3935 struct ppc_dyn_relocs
3937 struct ppc_dyn_relocs *next;
3939 /* The input section of the reloc. */
3942 /* Total number of relocs copied for the input section. */
3943 unsigned int count : 31;
3945 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3946 unsigned int ifunc : 1;
3949 struct ppc_link_hash_entry
3951 struct elf_link_hash_entry elf;
3954 /* A pointer to the most recently used stub hash entry against this
3956 struct ppc_stub_hash_entry *stub_cache;
3958 /* A pointer to the next symbol starting with a '.' */
3959 struct ppc_link_hash_entry *next_dot_sym;
3962 /* Track dynamic relocs copied for this symbol. */
3963 struct elf_dyn_relocs *dyn_relocs;
3965 /* Chain of aliases referring to a weakdef. */
3966 struct ppc_link_hash_entry *weakref;
3968 /* Link between function code and descriptor symbols. */
3969 struct ppc_link_hash_entry *oh;
3971 /* Flag function code and descriptor symbols. */
3972 unsigned int is_func:1;
3973 unsigned int is_func_descriptor:1;
3974 unsigned int fake:1;
3976 /* Whether global opd/toc sym has been adjusted or not.
3977 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3978 should be set for all globals defined in any opd/toc section. */
3979 unsigned int adjust_done:1;
3981 /* Set if we twiddled this symbol to weak at some stage. */
3982 unsigned int was_undefined:1;
3984 /* Set if this is an out-of-line register save/restore function,
3985 with non-standard calling convention. */
3986 unsigned int save_res:1;
3988 /* Contexts in which symbol is used in the GOT (or TOC).
3989 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3990 corresponding relocs are encountered during check_relocs.
3991 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3992 indicate the corresponding GOT entry type is not needed.
3993 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3994 a TPREL one. We use a separate flag rather than setting TPREL
3995 just for convenience in distinguishing the two cases. */
3996 #define TLS_GD 1 /* GD reloc. */
3997 #define TLS_LD 2 /* LD reloc. */
3998 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3999 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4000 #define TLS_TLS 16 /* Any TLS reloc. */
4001 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4002 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4003 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4004 unsigned char tls_mask;
4007 /* ppc64 ELF linker hash table. */
4009 struct ppc_link_hash_table
4011 struct elf_link_hash_table elf;
4013 /* The stub hash table. */
4014 struct bfd_hash_table stub_hash_table;
4016 /* Another hash table for plt_branch stubs. */
4017 struct bfd_hash_table branch_hash_table;
4019 /* Hash table for function prologue tocsave. */
4020 htab_t tocsave_htab;
4022 /* Various options and other info passed from the linker. */
4023 struct ppc64_elf_params *params;
4025 /* The size of sec_info below. */
4026 unsigned int sec_info_arr_size;
4028 /* Per-section array of extra section info. Done this way rather
4029 than as part of ppc64_elf_section_data so we have the info for
4030 non-ppc64 sections. */
4033 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4038 /* The section group that this section belongs to. */
4039 struct map_stub *group;
4040 /* A temp section list pointer. */
4045 /* Linked list of groups. */
4046 struct map_stub *group;
4048 /* Temp used when calculating TOC pointers. */
4051 asection *toc_first_sec;
4053 /* Used when adding symbols. */
4054 struct ppc_link_hash_entry *dot_syms;
4056 /* Shortcuts to get to dynamic linker sections. */
4063 asection *glink_eh_frame;
4065 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4066 struct ppc_link_hash_entry *tls_get_addr;
4067 struct ppc_link_hash_entry *tls_get_addr_fd;
4069 /* The size of reliplt used by got entry relocs. */
4070 bfd_size_type got_reli_size;
4073 unsigned long stub_count[ppc_stub_global_entry];
4075 /* Number of stubs against global syms. */
4076 unsigned long stub_globals;
4078 /* Set if we're linking code with function descriptors. */
4079 unsigned int opd_abi:1;
4081 /* Support for multiple toc sections. */
4082 unsigned int do_multi_toc:1;
4083 unsigned int multi_toc_needed:1;
4084 unsigned int second_toc_pass:1;
4085 unsigned int do_toc_opt:1;
4088 unsigned int stub_error:1;
4090 /* Temp used by ppc64_elf_before_check_relocs. */
4091 unsigned int twiddled_syms:1;
4093 /* Incremented every time we size stubs. */
4094 unsigned int stub_iteration;
4096 /* Small local sym cache. */
4097 struct sym_cache sym_cache;
4100 /* Rename some of the generic section flags to better document how they
4103 /* Nonzero if this section has TLS related relocations. */
4104 #define has_tls_reloc sec_flg0
4106 /* Nonzero if this section has a call to __tls_get_addr. */
4107 #define has_tls_get_addr_call sec_flg1
4109 /* Nonzero if this section has any toc or got relocs. */
4110 #define has_toc_reloc sec_flg2
4112 /* Nonzero if this section has a call to another section that uses
4114 #define makes_toc_func_call sec_flg3
4116 /* Recursion protection when determining above flag. */
4117 #define call_check_in_progress sec_flg4
4118 #define call_check_done sec_flg5
4120 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4122 #define ppc_hash_table(p) \
4123 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4124 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4126 #define ppc_stub_hash_lookup(table, string, create, copy) \
4127 ((struct ppc_stub_hash_entry *) \
4128 bfd_hash_lookup ((table), (string), (create), (copy)))
4130 #define ppc_branch_hash_lookup(table, string, create, copy) \
4131 ((struct ppc_branch_hash_entry *) \
4132 bfd_hash_lookup ((table), (string), (create), (copy)))
4134 /* Create an entry in the stub hash table. */
4136 static struct bfd_hash_entry *
4137 stub_hash_newfunc (struct bfd_hash_entry *entry,
4138 struct bfd_hash_table *table,
4141 /* Allocate the structure if it has not already been allocated by a
4145 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4150 /* Call the allocation method of the superclass. */
4151 entry = bfd_hash_newfunc (entry, table, string);
4154 struct ppc_stub_hash_entry *eh;
4156 /* Initialize the local fields. */
4157 eh = (struct ppc_stub_hash_entry *) entry;
4158 eh->stub_type = ppc_stub_none;
4160 eh->stub_offset = 0;
4161 eh->target_value = 0;
4162 eh->target_section = NULL;
4171 /* Create an entry in the branch hash table. */
4173 static struct bfd_hash_entry *
4174 branch_hash_newfunc (struct bfd_hash_entry *entry,
4175 struct bfd_hash_table *table,
4178 /* Allocate the structure if it has not already been allocated by a
4182 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4187 /* Call the allocation method of the superclass. */
4188 entry = bfd_hash_newfunc (entry, table, string);
4191 struct ppc_branch_hash_entry *eh;
4193 /* Initialize the local fields. */
4194 eh = (struct ppc_branch_hash_entry *) entry;
4202 /* Create an entry in a ppc64 ELF linker hash table. */
4204 static struct bfd_hash_entry *
4205 link_hash_newfunc (struct bfd_hash_entry *entry,
4206 struct bfd_hash_table *table,
4209 /* Allocate the structure if it has not already been allocated by a
4213 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4218 /* Call the allocation method of the superclass. */
4219 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4222 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4224 memset (&eh->u.stub_cache, 0,
4225 (sizeof (struct ppc_link_hash_entry)
4226 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4228 /* When making function calls, old ABI code references function entry
4229 points (dot symbols), while new ABI code references the function
4230 descriptor symbol. We need to make any combination of reference and
4231 definition work together, without breaking archive linking.
4233 For a defined function "foo" and an undefined call to "bar":
4234 An old object defines "foo" and ".foo", references ".bar" (possibly
4236 A new object defines "foo" and references "bar".
4238 A new object thus has no problem with its undefined symbols being
4239 satisfied by definitions in an old object. On the other hand, the
4240 old object won't have ".bar" satisfied by a new object.
4242 Keep a list of newly added dot-symbols. */
4244 if (string[0] == '.')
4246 struct ppc_link_hash_table *htab;
4248 htab = (struct ppc_link_hash_table *) table;
4249 eh->u.next_dot_sym = htab->dot_syms;
4250 htab->dot_syms = eh;
4257 struct tocsave_entry {
4263 tocsave_htab_hash (const void *p)
4265 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4266 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4270 tocsave_htab_eq (const void *p1, const void *p2)
4272 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4273 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4274 return e1->sec == e2->sec && e1->offset == e2->offset;
4277 /* Destroy a ppc64 ELF linker hash table. */
4280 ppc64_elf_link_hash_table_free (bfd *obfd)
4282 struct ppc_link_hash_table *htab;
4284 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4285 if (htab->tocsave_htab)
4286 htab_delete (htab->tocsave_htab);
4287 bfd_hash_table_free (&htab->branch_hash_table);
4288 bfd_hash_table_free (&htab->stub_hash_table);
4289 _bfd_elf_link_hash_table_free (obfd);
4292 /* Create a ppc64 ELF linker hash table. */
4294 static struct bfd_link_hash_table *
4295 ppc64_elf_link_hash_table_create (bfd *abfd)
4297 struct ppc_link_hash_table *htab;
4298 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4300 htab = bfd_zmalloc (amt);
4304 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4305 sizeof (struct ppc_link_hash_entry),
4312 /* Init the stub hash table too. */
4313 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4314 sizeof (struct ppc_stub_hash_entry)))
4316 _bfd_elf_link_hash_table_free (abfd);
4320 /* And the branch hash table. */
4321 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4322 sizeof (struct ppc_branch_hash_entry)))
4324 bfd_hash_table_free (&htab->stub_hash_table);
4325 _bfd_elf_link_hash_table_free (abfd);
4329 htab->tocsave_htab = htab_try_create (1024,
4333 if (htab->tocsave_htab == NULL)
4335 ppc64_elf_link_hash_table_free (abfd);
4338 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4340 /* Initializing two fields of the union is just cosmetic. We really
4341 only care about glist, but when compiled on a 32-bit host the
4342 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4343 debugger inspection of these fields look nicer. */
4344 htab->elf.init_got_refcount.refcount = 0;
4345 htab->elf.init_got_refcount.glist = NULL;
4346 htab->elf.init_plt_refcount.refcount = 0;
4347 htab->elf.init_plt_refcount.glist = NULL;
4348 htab->elf.init_got_offset.offset = 0;
4349 htab->elf.init_got_offset.glist = NULL;
4350 htab->elf.init_plt_offset.offset = 0;
4351 htab->elf.init_plt_offset.glist = NULL;
4353 return &htab->elf.root;
4356 /* Create sections for linker generated code. */
4359 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4361 struct ppc_link_hash_table *htab;
4364 htab = ppc_hash_table (info);
4366 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4367 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4368 if (htab->params->save_restore_funcs)
4370 /* Create .sfpr for code to save and restore fp regs. */
4371 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4373 if (htab->sfpr == NULL
4374 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4378 if (bfd_link_relocatable (info))
4381 /* Create .glink for lazy dynamic linking support. */
4382 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4384 if (htab->glink == NULL
4385 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4388 if (!info->no_ld_generated_unwind_info)
4390 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4391 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4392 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4395 if (htab->glink_eh_frame == NULL
4396 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4400 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4401 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4402 if (htab->elf.iplt == NULL
4403 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4406 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4407 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4409 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4410 if (htab->elf.irelplt == NULL
4411 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4414 /* Create branch lookup table for plt_branch stubs. */
4415 flags = (SEC_ALLOC | SEC_LOAD
4416 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4417 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4419 if (htab->brlt == NULL
4420 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4423 if (!bfd_link_pic (info))
4426 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4427 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4428 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4431 if (htab->relbrlt == NULL
4432 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4438 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4441 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4442 struct ppc64_elf_params *params)
4444 struct ppc_link_hash_table *htab;
4446 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4448 /* Always hook our dynamic sections into the first bfd, which is the
4449 linker created stub bfd. This ensures that the GOT header is at
4450 the start of the output TOC section. */
4451 htab = ppc_hash_table (info);
4452 htab->elf.dynobj = params->stub_bfd;
4453 htab->params = params;
4455 return create_linkage_sections (htab->elf.dynobj, info);
4458 /* Build a name for an entry in the stub hash table. */
4461 ppc_stub_name (const asection *input_section,
4462 const asection *sym_sec,
4463 const struct ppc_link_hash_entry *h,
4464 const Elf_Internal_Rela *rel)
4469 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4470 offsets from a sym as a branch target? In fact, we could
4471 probably assume the addend is always zero. */
4472 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4476 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4477 stub_name = bfd_malloc (len);
4478 if (stub_name == NULL)
4481 len = sprintf (stub_name, "%08x.%s+%x",
4482 input_section->id & 0xffffffff,
4483 h->elf.root.root.string,
4484 (int) rel->r_addend & 0xffffffff);
4488 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4489 stub_name = bfd_malloc (len);
4490 if (stub_name == NULL)
4493 len = sprintf (stub_name, "%08x.%x:%x+%x",
4494 input_section->id & 0xffffffff,
4495 sym_sec->id & 0xffffffff,
4496 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4497 (int) rel->r_addend & 0xffffffff);
4499 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4500 stub_name[len - 2] = 0;
4504 /* Look up an entry in the stub hash. Stub entries are cached because
4505 creating the stub name takes a bit of time. */
4507 static struct ppc_stub_hash_entry *
4508 ppc_get_stub_entry (const asection *input_section,
4509 const asection *sym_sec,
4510 struct ppc_link_hash_entry *h,
4511 const Elf_Internal_Rela *rel,
4512 struct ppc_link_hash_table *htab)
4514 struct ppc_stub_hash_entry *stub_entry;
4515 struct map_stub *group;
4517 /* If this input section is part of a group of sections sharing one
4518 stub section, then use the id of the first section in the group.
4519 Stub names need to include a section id, as there may well be
4520 more than one stub used to reach say, printf, and we need to
4521 distinguish between them. */
4522 group = htab->sec_info[input_section->id].u.group;
4526 if (h != NULL && h->u.stub_cache != NULL
4527 && h->u.stub_cache->h == h
4528 && h->u.stub_cache->group == group)
4530 stub_entry = h->u.stub_cache;
4536 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4537 if (stub_name == NULL)
4540 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4541 stub_name, FALSE, FALSE);
4543 h->u.stub_cache = stub_entry;
4551 /* Add a new stub entry to the stub hash. Not all fields of the new
4552 stub entry are initialised. */
4554 static struct ppc_stub_hash_entry *
4555 ppc_add_stub (const char *stub_name,
4557 struct bfd_link_info *info)
4559 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4560 struct map_stub *group;
4563 struct ppc_stub_hash_entry *stub_entry;
4565 group = htab->sec_info[section->id].u.group;
4566 link_sec = group->link_sec;
4567 stub_sec = group->stub_sec;
4568 if (stub_sec == NULL)
4574 namelen = strlen (link_sec->name);
4575 len = namelen + sizeof (STUB_SUFFIX);
4576 s_name = bfd_alloc (htab->params->stub_bfd, len);
4580 memcpy (s_name, link_sec->name, namelen);
4581 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4582 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4583 if (stub_sec == NULL)
4585 group->stub_sec = stub_sec;
4588 /* Enter this entry into the linker stub hash table. */
4589 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4591 if (stub_entry == NULL)
4593 /* xgettext:c-format */
4594 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4595 section->owner, stub_name);
4599 stub_entry->group = group;
4600 stub_entry->stub_offset = 0;
4604 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4605 not already done. */
4608 create_got_section (bfd *abfd, struct bfd_link_info *info)
4610 asection *got, *relgot;
4612 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4614 if (!is_ppc64_elf (abfd))
4620 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4623 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4624 | SEC_LINKER_CREATED);
4626 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4628 || !bfd_set_section_alignment (abfd, got, 3))
4631 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4632 flags | SEC_READONLY);
4634 || ! bfd_set_section_alignment (abfd, relgot, 3))
4637 ppc64_elf_tdata (abfd)->got = got;
4638 ppc64_elf_tdata (abfd)->relgot = relgot;
4642 /* Create the dynamic sections, and set up shortcuts. */
4645 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4647 struct ppc_link_hash_table *htab;
4649 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4652 htab = ppc_hash_table (info);
4656 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4657 if (!bfd_link_pic (info))
4658 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4660 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4661 || (!bfd_link_pic (info) && !htab->relbss))
4667 /* Follow indirect and warning symbol links. */
4669 static inline struct bfd_link_hash_entry *
4670 follow_link (struct bfd_link_hash_entry *h)
4672 while (h->type == bfd_link_hash_indirect
4673 || h->type == bfd_link_hash_warning)
4678 static inline struct elf_link_hash_entry *
4679 elf_follow_link (struct elf_link_hash_entry *h)
4681 return (struct elf_link_hash_entry *) follow_link (&h->root);
4684 static inline struct ppc_link_hash_entry *
4685 ppc_follow_link (struct ppc_link_hash_entry *h)
4687 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4690 /* Merge PLT info on FROM with that on TO. */
4693 move_plt_plist (struct ppc_link_hash_entry *from,
4694 struct ppc_link_hash_entry *to)
4696 if (from->elf.plt.plist != NULL)
4698 if (to->elf.plt.plist != NULL)
4700 struct plt_entry **entp;
4701 struct plt_entry *ent;
4703 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4705 struct plt_entry *dent;
4707 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4708 if (dent->addend == ent->addend)
4710 dent->plt.refcount += ent->plt.refcount;
4717 *entp = to->elf.plt.plist;
4720 to->elf.plt.plist = from->elf.plt.plist;
4721 from->elf.plt.plist = NULL;
4725 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4728 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4729 struct elf_link_hash_entry *dir,
4730 struct elf_link_hash_entry *ind)
4732 struct ppc_link_hash_entry *edir, *eind;
4734 edir = (struct ppc_link_hash_entry *) dir;
4735 eind = (struct ppc_link_hash_entry *) ind;
4737 edir->is_func |= eind->is_func;
4738 edir->is_func_descriptor |= eind->is_func_descriptor;
4739 edir->tls_mask |= eind->tls_mask;
4740 if (eind->oh != NULL)
4741 edir->oh = ppc_follow_link (eind->oh);
4743 if (edir->elf.versioned != versioned_hidden)
4745 /* If called to transfer flags for a weakdef during processing
4746 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4747 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4748 if (!(ELIMINATE_COPY_RELOCS
4749 && eind->elf.root.type != bfd_link_hash_indirect
4750 && edir->elf.dynamic_adjusted))
4751 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4753 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4754 edir->elf.ref_regular |= eind->elf.ref_regular;
4755 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4756 edir->elf.needs_plt |= eind->elf.needs_plt;
4757 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4760 /* If we were called to copy over info for a weak sym, don't copy
4761 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4762 in order to simplify readonly_dynrelocs and save a field in the
4763 symbol hash entry, but that means dyn_relocs can't be used in any
4764 tests about a specific symbol, or affect other symbol flags which
4766 Chain weakdefs so we can get from the weakdef back to an alias.
4767 The list is circular so that we don't need to use u.weakdef as
4768 well as this list to look at all aliases. */
4769 if (eind->elf.root.type != bfd_link_hash_indirect)
4771 struct ppc_link_hash_entry *cur, *add, *next;
4776 cur = edir->weakref;
4781 /* We can be called twice for the same symbols.
4782 Don't make multiple loops. */
4786 } while (cur != edir);
4788 next = add->weakref;
4791 add->weakref = edir->weakref != NULL ? edir->weakref : edir;
4792 edir->weakref = add;
4795 } while (add != NULL && add != eind);
4799 /* Copy over any dynamic relocs we may have on the indirect sym. */
4800 if (eind->dyn_relocs != NULL)
4802 if (edir->dyn_relocs != NULL)
4804 struct elf_dyn_relocs **pp;
4805 struct elf_dyn_relocs *p;
4807 /* Add reloc counts against the indirect sym to the direct sym
4808 list. Merge any entries against the same section. */
4809 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4811 struct elf_dyn_relocs *q;
4813 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4814 if (q->sec == p->sec)
4816 q->pc_count += p->pc_count;
4817 q->count += p->count;
4824 *pp = edir->dyn_relocs;
4827 edir->dyn_relocs = eind->dyn_relocs;
4828 eind->dyn_relocs = NULL;
4831 /* Copy over got entries that we may have already seen to the
4832 symbol which just became indirect. */
4833 if (eind->elf.got.glist != NULL)
4835 if (edir->elf.got.glist != NULL)
4837 struct got_entry **entp;
4838 struct got_entry *ent;
4840 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4842 struct got_entry *dent;
4844 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4845 if (dent->addend == ent->addend
4846 && dent->owner == ent->owner
4847 && dent->tls_type == ent->tls_type)
4849 dent->got.refcount += ent->got.refcount;
4856 *entp = edir->elf.got.glist;
4859 edir->elf.got.glist = eind->elf.got.glist;
4860 eind->elf.got.glist = NULL;
4863 /* And plt entries. */
4864 move_plt_plist (eind, edir);
4866 if (eind->elf.dynindx != -1)
4868 if (edir->elf.dynindx != -1)
4869 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4870 edir->elf.dynstr_index);
4871 edir->elf.dynindx = eind->elf.dynindx;
4872 edir->elf.dynstr_index = eind->elf.dynstr_index;
4873 eind->elf.dynindx = -1;
4874 eind->elf.dynstr_index = 0;
4878 /* Find the function descriptor hash entry from the given function code
4879 hash entry FH. Link the entries via their OH fields. */
4881 static struct ppc_link_hash_entry *
4882 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4884 struct ppc_link_hash_entry *fdh = fh->oh;
4888 const char *fd_name = fh->elf.root.root.string + 1;
4890 fdh = (struct ppc_link_hash_entry *)
4891 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4895 fdh->is_func_descriptor = 1;
4901 return ppc_follow_link (fdh);
4904 /* Make a fake function descriptor sym for the code sym FH. */
4906 static struct ppc_link_hash_entry *
4907 make_fdh (struct bfd_link_info *info,
4908 struct ppc_link_hash_entry *fh)
4912 struct bfd_link_hash_entry *bh;
4913 struct ppc_link_hash_entry *fdh;
4915 abfd = fh->elf.root.u.undef.abfd;
4916 newsym = bfd_make_empty_symbol (abfd);
4917 newsym->name = fh->elf.root.root.string + 1;
4918 newsym->section = bfd_und_section_ptr;
4920 newsym->flags = BSF_WEAK;
4923 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4924 newsym->flags, newsym->section,
4925 newsym->value, NULL, FALSE, FALSE,
4929 fdh = (struct ppc_link_hash_entry *) bh;
4930 fdh->elf.non_elf = 0;
4932 fdh->is_func_descriptor = 1;
4939 /* Fix function descriptor symbols defined in .opd sections to be
4943 ppc64_elf_add_symbol_hook (bfd *ibfd,
4944 struct bfd_link_info *info,
4945 Elf_Internal_Sym *isym,
4947 flagword *flags ATTRIBUTE_UNUSED,
4951 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4952 && (ibfd->flags & DYNAMIC) == 0
4953 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4954 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4957 && strcmp ((*sec)->name, ".opd") == 0)
4961 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4962 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4963 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4965 /* If the symbol is a function defined in .opd, and the function
4966 code is in a discarded group, let it appear to be undefined. */
4967 if (!bfd_link_relocatable (info)
4968 && (*sec)->reloc_count != 0
4969 && opd_entry_value (*sec, *value, &code_sec, NULL,
4970 FALSE) != (bfd_vma) -1
4971 && discarded_section (code_sec))
4973 *sec = bfd_und_section_ptr;
4974 isym->st_shndx = SHN_UNDEF;
4977 else if (*sec != NULL
4978 && strcmp ((*sec)->name, ".toc") == 0
4979 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4981 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4983 htab->params->object_in_toc = 1;
4986 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4988 if (abiversion (ibfd) == 0)
4989 set_abiversion (ibfd, 2);
4990 else if (abiversion (ibfd) == 1)
4992 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4993 " for ABI version 1\n"), name);
4994 bfd_set_error (bfd_error_bad_value);
5002 /* Merge non-visibility st_other attributes: local entry point. */
5005 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
5006 const Elf_Internal_Sym *isym,
5007 bfd_boolean definition,
5008 bfd_boolean dynamic)
5010 if (definition && !dynamic)
5011 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
5012 | ELF_ST_VISIBILITY (h->other));
5015 /* This function makes an old ABI object reference to ".bar" cause the
5016 inclusion of a new ABI object archive that defines "bar".
5017 NAME is a symbol defined in an archive. Return a symbol in the hash
5018 table that might be satisfied by the archive symbols. */
5020 static struct elf_link_hash_entry *
5021 ppc64_elf_archive_symbol_lookup (bfd *abfd,
5022 struct bfd_link_info *info,
5025 struct elf_link_hash_entry *h;
5029 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
5031 /* Don't return this sym if it is a fake function descriptor
5032 created by add_symbol_adjust. */
5033 && !(h->root.type == bfd_link_hash_undefweak
5034 && ((struct ppc_link_hash_entry *) h)->fake))
5040 len = strlen (name);
5041 dot_name = bfd_alloc (abfd, len + 2);
5042 if (dot_name == NULL)
5043 return (struct elf_link_hash_entry *) 0 - 1;
5045 memcpy (dot_name + 1, name, len + 1);
5046 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5047 bfd_release (abfd, dot_name);
5051 /* This function satisfies all old ABI object references to ".bar" if a
5052 new ABI object defines "bar". Well, at least, undefined dot symbols
5053 are made weak. This stops later archive searches from including an
5054 object if we already have a function descriptor definition. It also
5055 prevents the linker complaining about undefined symbols.
5056 We also check and correct mismatched symbol visibility here. The
5057 most restrictive visibility of the function descriptor and the
5058 function entry symbol is used. */
5061 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5063 struct ppc_link_hash_table *htab;
5064 struct ppc_link_hash_entry *fdh;
5066 if (eh->elf.root.type == bfd_link_hash_indirect)
5069 if (eh->elf.root.type == bfd_link_hash_warning)
5070 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5072 if (eh->elf.root.root.string[0] != '.')
5075 htab = ppc_hash_table (info);
5079 fdh = lookup_fdh (eh, htab);
5082 if (!bfd_link_relocatable (info)
5083 && (eh->elf.root.type == bfd_link_hash_undefined
5084 || eh->elf.root.type == bfd_link_hash_undefweak)
5085 && eh->elf.ref_regular)
5087 /* Make an undefweak function descriptor sym, which is enough to
5088 pull in an --as-needed shared lib, but won't cause link
5089 errors. Archives are handled elsewhere. */
5090 fdh = make_fdh (info, eh);
5093 fdh->elf.ref_regular = 1;
5098 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5099 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5100 if (entry_vis < descr_vis)
5101 fdh->elf.other += entry_vis - descr_vis;
5102 else if (entry_vis > descr_vis)
5103 eh->elf.other += descr_vis - entry_vis;
5105 if ((fdh->elf.root.type == bfd_link_hash_defined
5106 || fdh->elf.root.type == bfd_link_hash_defweak)
5107 && eh->elf.root.type == bfd_link_hash_undefined)
5109 eh->elf.root.type = bfd_link_hash_undefweak;
5110 eh->was_undefined = 1;
5111 htab->twiddled_syms = 1;
5118 /* Set up opd section info and abiversion for IBFD, and process list
5119 of dot-symbols we made in link_hash_newfunc. */
5122 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5124 struct ppc_link_hash_table *htab;
5125 struct ppc_link_hash_entry **p, *eh;
5126 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5128 if (opd != NULL && opd->size != 0)
5130 if (abiversion (ibfd) == 0)
5131 set_abiversion (ibfd, 1);
5132 else if (abiversion (ibfd) >= 2)
5134 /* xgettext:c-format */
5135 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5137 ibfd, abiversion (ibfd));
5138 bfd_set_error (bfd_error_bad_value);
5142 if ((ibfd->flags & DYNAMIC) == 0
5143 && (opd->flags & SEC_RELOC) != 0
5144 && opd->reloc_count != 0
5145 && !bfd_is_abs_section (opd->output_section))
5147 /* Garbage collection needs some extra help with .opd sections.
5148 We don't want to necessarily keep everything referenced by
5149 relocs in .opd, as that would keep all functions. Instead,
5150 if we reference an .opd symbol (a function descriptor), we
5151 want to keep the function code symbol's section. This is
5152 easy for global symbols, but for local syms we need to keep
5153 information about the associated function section. */
5155 asection **opd_sym_map;
5157 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5158 opd_sym_map = bfd_zalloc (ibfd, amt);
5159 if (opd_sym_map == NULL)
5161 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5162 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5163 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5167 if (!is_ppc64_elf (info->output_bfd))
5169 htab = ppc_hash_table (info);
5173 /* For input files without an explicit abiversion in e_flags
5174 we should have flagged any with symbol st_other bits set
5175 as ELFv1 and above flagged those with .opd as ELFv2.
5176 Set the output abiversion if not yet set, and for any input
5177 still ambiguous, take its abiversion from the output.
5178 Differences in ABI are reported later. */
5179 if (abiversion (info->output_bfd) == 0)
5180 set_abiversion (info->output_bfd, abiversion (ibfd));
5181 else if (abiversion (ibfd) == 0)
5182 set_abiversion (ibfd, abiversion (info->output_bfd));
5184 p = &htab->dot_syms;
5185 while ((eh = *p) != NULL)
5188 if (&eh->elf == htab->elf.hgot)
5190 else if (htab->elf.hgot == NULL
5191 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5192 htab->elf.hgot = &eh->elf;
5193 else if (!add_symbol_adjust (eh, info))
5195 p = &eh->u.next_dot_sym;
5198 /* Clear the list for non-ppc64 input files. */
5199 p = &htab->dot_syms;
5200 while ((eh = *p) != NULL)
5203 p = &eh->u.next_dot_sym;
5206 /* We need to fix the undefs list for any syms we have twiddled to
5208 if (htab->twiddled_syms)
5210 bfd_link_repair_undef_list (&htab->elf.root);
5211 htab->twiddled_syms = 0;
5216 /* Undo hash table changes when an --as-needed input file is determined
5217 not to be needed. */
5220 ppc64_elf_notice_as_needed (bfd *ibfd,
5221 struct bfd_link_info *info,
5222 enum notice_asneeded_action act)
5224 if (act == notice_not_needed)
5226 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5231 htab->dot_syms = NULL;
5233 return _bfd_elf_notice_as_needed (ibfd, info, act);
5236 /* If --just-symbols against a final linked binary, then assume we need
5237 toc adjusting stubs when calling functions defined there. */
5240 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5242 if ((sec->flags & SEC_CODE) != 0
5243 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5244 && is_ppc64_elf (sec->owner))
5246 if (abiversion (sec->owner) >= 2
5247 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5248 sec->has_toc_reloc = 1;
5250 _bfd_elf_link_just_syms (sec, info);
5253 static struct plt_entry **
5254 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5255 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5257 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5258 struct plt_entry **local_plt;
5259 unsigned char *local_got_tls_masks;
5261 if (local_got_ents == NULL)
5263 bfd_size_type size = symtab_hdr->sh_info;
5265 size *= (sizeof (*local_got_ents)
5266 + sizeof (*local_plt)
5267 + sizeof (*local_got_tls_masks));
5268 local_got_ents = bfd_zalloc (abfd, size);
5269 if (local_got_ents == NULL)
5271 elf_local_got_ents (abfd) = local_got_ents;
5274 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5276 struct got_entry *ent;
5278 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5279 if (ent->addend == r_addend
5280 && ent->owner == abfd
5281 && ent->tls_type == tls_type)
5285 bfd_size_type amt = sizeof (*ent);
5286 ent = bfd_alloc (abfd, amt);
5289 ent->next = local_got_ents[r_symndx];
5290 ent->addend = r_addend;
5292 ent->tls_type = tls_type;
5293 ent->is_indirect = FALSE;
5294 ent->got.refcount = 0;
5295 local_got_ents[r_symndx] = ent;
5297 ent->got.refcount += 1;
5300 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5301 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5302 local_got_tls_masks[r_symndx] |= tls_type;
5304 return local_plt + r_symndx;
5308 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5310 struct plt_entry *ent;
5312 for (ent = *plist; ent != NULL; ent = ent->next)
5313 if (ent->addend == addend)
5317 bfd_size_type amt = sizeof (*ent);
5318 ent = bfd_alloc (abfd, amt);
5322 ent->addend = addend;
5323 ent->plt.refcount = 0;
5326 ent->plt.refcount += 1;
5331 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5333 return (r_type == R_PPC64_REL24
5334 || r_type == R_PPC64_REL14
5335 || r_type == R_PPC64_REL14_BRTAKEN
5336 || r_type == R_PPC64_REL14_BRNTAKEN
5337 || r_type == R_PPC64_ADDR24
5338 || r_type == R_PPC64_ADDR14
5339 || r_type == R_PPC64_ADDR14_BRTAKEN
5340 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5343 /* Look through the relocs for a section during the first phase, and
5344 calculate needed space in the global offset table, procedure
5345 linkage table, and dynamic reloc sections. */
5348 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5349 asection *sec, const Elf_Internal_Rela *relocs)
5351 struct ppc_link_hash_table *htab;
5352 Elf_Internal_Shdr *symtab_hdr;
5353 struct elf_link_hash_entry **sym_hashes;
5354 const Elf_Internal_Rela *rel;
5355 const Elf_Internal_Rela *rel_end;
5357 asection **opd_sym_map;
5358 struct elf_link_hash_entry *tga, *dottga;
5360 if (bfd_link_relocatable (info))
5363 /* Don't do anything special with non-loaded, non-alloced sections.
5364 In particular, any relocs in such sections should not affect GOT
5365 and PLT reference counting (ie. we don't allow them to create GOT
5366 or PLT entries), there's no possibility or desire to optimize TLS
5367 relocs, and there's not much point in propagating relocs to shared
5368 libs that the dynamic linker won't relocate. */
5369 if ((sec->flags & SEC_ALLOC) == 0)
5372 BFD_ASSERT (is_ppc64_elf (abfd));
5374 htab = ppc_hash_table (info);
5378 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5379 FALSE, FALSE, TRUE);
5380 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5381 FALSE, FALSE, TRUE);
5382 symtab_hdr = &elf_symtab_hdr (abfd);
5383 sym_hashes = elf_sym_hashes (abfd);
5386 if (ppc64_elf_section_data (sec) != NULL
5387 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5388 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5390 rel_end = relocs + sec->reloc_count;
5391 for (rel = relocs; rel < rel_end; rel++)
5393 unsigned long r_symndx;
5394 struct elf_link_hash_entry *h;
5395 enum elf_ppc64_reloc_type r_type;
5397 struct _ppc64_elf_section_data *ppc64_sec;
5398 struct plt_entry **ifunc, **plt_list;
5400 r_symndx = ELF64_R_SYM (rel->r_info);
5401 if (r_symndx < symtab_hdr->sh_info)
5405 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5406 h = elf_follow_link (h);
5408 /* PR15323, ref flags aren't set for references in the same
5410 h->root.non_ir_ref = 1;
5412 if (h == htab->elf.hgot)
5413 sec->has_toc_reloc = 1;
5420 if (h->type == STT_GNU_IFUNC)
5423 ifunc = &h->plt.plist;
5428 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5433 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5435 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5436 rel->r_addend, PLT_IFUNC);
5442 r_type = ELF64_R_TYPE (rel->r_info);
5447 /* These special tls relocs tie a call to __tls_get_addr with
5448 its parameter symbol. */
5451 case R_PPC64_GOT_TLSLD16:
5452 case R_PPC64_GOT_TLSLD16_LO:
5453 case R_PPC64_GOT_TLSLD16_HI:
5454 case R_PPC64_GOT_TLSLD16_HA:
5455 tls_type = TLS_TLS | TLS_LD;
5458 case R_PPC64_GOT_TLSGD16:
5459 case R_PPC64_GOT_TLSGD16_LO:
5460 case R_PPC64_GOT_TLSGD16_HI:
5461 case R_PPC64_GOT_TLSGD16_HA:
5462 tls_type = TLS_TLS | TLS_GD;
5465 case R_PPC64_GOT_TPREL16_DS:
5466 case R_PPC64_GOT_TPREL16_LO_DS:
5467 case R_PPC64_GOT_TPREL16_HI:
5468 case R_PPC64_GOT_TPREL16_HA:
5469 if (bfd_link_pic (info))
5470 info->flags |= DF_STATIC_TLS;
5471 tls_type = TLS_TLS | TLS_TPREL;
5474 case R_PPC64_GOT_DTPREL16_DS:
5475 case R_PPC64_GOT_DTPREL16_LO_DS:
5476 case R_PPC64_GOT_DTPREL16_HI:
5477 case R_PPC64_GOT_DTPREL16_HA:
5478 tls_type = TLS_TLS | TLS_DTPREL;
5480 sec->has_tls_reloc = 1;
5484 case R_PPC64_GOT16_DS:
5485 case R_PPC64_GOT16_HA:
5486 case R_PPC64_GOT16_HI:
5487 case R_PPC64_GOT16_LO:
5488 case R_PPC64_GOT16_LO_DS:
5489 /* This symbol requires a global offset table entry. */
5490 sec->has_toc_reloc = 1;
5491 if (r_type == R_PPC64_GOT_TLSLD16
5492 || r_type == R_PPC64_GOT_TLSGD16
5493 || r_type == R_PPC64_GOT_TPREL16_DS
5494 || r_type == R_PPC64_GOT_DTPREL16_DS
5495 || r_type == R_PPC64_GOT16
5496 || r_type == R_PPC64_GOT16_DS)
5498 htab->do_multi_toc = 1;
5499 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5502 if (ppc64_elf_tdata (abfd)->got == NULL
5503 && !create_got_section (abfd, info))
5508 struct ppc_link_hash_entry *eh;
5509 struct got_entry *ent;
5511 eh = (struct ppc_link_hash_entry *) h;
5512 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5513 if (ent->addend == rel->r_addend
5514 && ent->owner == abfd
5515 && ent->tls_type == tls_type)
5519 bfd_size_type amt = sizeof (*ent);
5520 ent = bfd_alloc (abfd, amt);
5523 ent->next = eh->elf.got.glist;
5524 ent->addend = rel->r_addend;
5526 ent->tls_type = tls_type;
5527 ent->is_indirect = FALSE;
5528 ent->got.refcount = 0;
5529 eh->elf.got.glist = ent;
5531 ent->got.refcount += 1;
5532 eh->tls_mask |= tls_type;
5535 /* This is a global offset table entry for a local symbol. */
5536 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5537 rel->r_addend, tls_type))
5540 /* We may also need a plt entry if the symbol turns out to be
5542 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5544 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5549 case R_PPC64_PLT16_HA:
5550 case R_PPC64_PLT16_HI:
5551 case R_PPC64_PLT16_LO:
5554 /* This symbol requires a procedure linkage table entry. */
5559 if (h->root.root.string[0] == '.'
5560 && h->root.root.string[1] != '\0')
5561 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5562 plt_list = &h->plt.plist;
5564 if (plt_list == NULL)
5566 /* It does not make sense to have a procedure linkage
5567 table entry for a non-ifunc local symbol. */
5568 info->callbacks->einfo
5569 /* xgettext:c-format */
5570 (_("%P: %H: %s reloc against local symbol\n"),
5571 abfd, sec, rel->r_offset,
5572 ppc64_elf_howto_table[r_type]->name);
5573 bfd_set_error (bfd_error_bad_value);
5576 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5580 /* The following relocations don't need to propagate the
5581 relocation if linking a shared object since they are
5582 section relative. */
5583 case R_PPC64_SECTOFF:
5584 case R_PPC64_SECTOFF_LO:
5585 case R_PPC64_SECTOFF_HI:
5586 case R_PPC64_SECTOFF_HA:
5587 case R_PPC64_SECTOFF_DS:
5588 case R_PPC64_SECTOFF_LO_DS:
5589 case R_PPC64_DTPREL16:
5590 case R_PPC64_DTPREL16_LO:
5591 case R_PPC64_DTPREL16_HI:
5592 case R_PPC64_DTPREL16_HA:
5593 case R_PPC64_DTPREL16_DS:
5594 case R_PPC64_DTPREL16_LO_DS:
5595 case R_PPC64_DTPREL16_HIGH:
5596 case R_PPC64_DTPREL16_HIGHA:
5597 case R_PPC64_DTPREL16_HIGHER:
5598 case R_PPC64_DTPREL16_HIGHERA:
5599 case R_PPC64_DTPREL16_HIGHEST:
5600 case R_PPC64_DTPREL16_HIGHESTA:
5605 case R_PPC64_REL16_LO:
5606 case R_PPC64_REL16_HI:
5607 case R_PPC64_REL16_HA:
5608 case R_PPC64_REL16DX_HA:
5611 /* Not supported as a dynamic relocation. */
5612 case R_PPC64_ADDR64_LOCAL:
5613 if (bfd_link_pic (info))
5615 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5617 /* xgettext:c-format */
5618 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5619 "in shared libraries and PIEs.\n"),
5620 abfd, sec, rel->r_offset,
5621 ppc64_elf_howto_table[r_type]->name);
5622 bfd_set_error (bfd_error_bad_value);
5628 case R_PPC64_TOC16_DS:
5629 htab->do_multi_toc = 1;
5630 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5632 case R_PPC64_TOC16_LO:
5633 case R_PPC64_TOC16_HI:
5634 case R_PPC64_TOC16_HA:
5635 case R_PPC64_TOC16_LO_DS:
5636 sec->has_toc_reloc = 1;
5643 /* This relocation describes the C++ object vtable hierarchy.
5644 Reconstruct it for later use during GC. */
5645 case R_PPC64_GNU_VTINHERIT:
5646 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5650 /* This relocation describes which C++ vtable entries are actually
5651 used. Record for later use during GC. */
5652 case R_PPC64_GNU_VTENTRY:
5653 BFD_ASSERT (h != NULL);
5655 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5660 case R_PPC64_REL14_BRTAKEN:
5661 case R_PPC64_REL14_BRNTAKEN:
5663 asection *dest = NULL;
5665 /* Heuristic: If jumping outside our section, chances are
5666 we are going to need a stub. */
5669 /* If the sym is weak it may be overridden later, so
5670 don't assume we know where a weak sym lives. */
5671 if (h->root.type == bfd_link_hash_defined)
5672 dest = h->root.u.def.section;
5676 Elf_Internal_Sym *isym;
5678 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5683 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5687 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5696 if (h->root.root.string[0] == '.'
5697 && h->root.root.string[1] != '\0')
5698 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5700 if (h == tga || h == dottga)
5702 sec->has_tls_reloc = 1;
5704 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5705 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5706 /* We have a new-style __tls_get_addr call with
5710 /* Mark this section as having an old-style call. */
5711 sec->has_tls_get_addr_call = 1;
5713 plt_list = &h->plt.plist;
5716 /* We may need a .plt entry if the function this reloc
5717 refers to is in a shared lib. */
5719 && !update_plt_info (abfd, plt_list, rel->r_addend))
5723 case R_PPC64_ADDR14:
5724 case R_PPC64_ADDR14_BRNTAKEN:
5725 case R_PPC64_ADDR14_BRTAKEN:
5726 case R_PPC64_ADDR24:
5729 case R_PPC64_TPREL64:
5730 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5731 if (bfd_link_pic (info))
5732 info->flags |= DF_STATIC_TLS;
5735 case R_PPC64_DTPMOD64:
5736 if (rel + 1 < rel_end
5737 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5738 && rel[1].r_offset == rel->r_offset + 8)
5739 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5741 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5744 case R_PPC64_DTPREL64:
5745 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5747 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5748 && rel[-1].r_offset == rel->r_offset - 8)
5749 /* This is the second reloc of a dtpmod, dtprel pair.
5750 Don't mark with TLS_DTPREL. */
5754 sec->has_tls_reloc = 1;
5757 struct ppc_link_hash_entry *eh;
5758 eh = (struct ppc_link_hash_entry *) h;
5759 eh->tls_mask |= tls_type;
5762 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5763 rel->r_addend, tls_type))
5766 ppc64_sec = ppc64_elf_section_data (sec);
5767 if (ppc64_sec->sec_type != sec_toc)
5771 /* One extra to simplify get_tls_mask. */
5772 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5773 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5774 if (ppc64_sec->u.toc.symndx == NULL)
5776 amt = sec->size * sizeof (bfd_vma) / 8;
5777 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5778 if (ppc64_sec->u.toc.add == NULL)
5780 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5781 ppc64_sec->sec_type = sec_toc;
5783 BFD_ASSERT (rel->r_offset % 8 == 0);
5784 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5785 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5787 /* Mark the second slot of a GD or LD entry.
5788 -1 to indicate GD and -2 to indicate LD. */
5789 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5790 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5791 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5792 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5795 case R_PPC64_TPREL16:
5796 case R_PPC64_TPREL16_LO:
5797 case R_PPC64_TPREL16_HI:
5798 case R_PPC64_TPREL16_HA:
5799 case R_PPC64_TPREL16_DS:
5800 case R_PPC64_TPREL16_LO_DS:
5801 case R_PPC64_TPREL16_HIGH:
5802 case R_PPC64_TPREL16_HIGHA:
5803 case R_PPC64_TPREL16_HIGHER:
5804 case R_PPC64_TPREL16_HIGHERA:
5805 case R_PPC64_TPREL16_HIGHEST:
5806 case R_PPC64_TPREL16_HIGHESTA:
5807 if (bfd_link_pic (info))
5809 info->flags |= DF_STATIC_TLS;
5814 case R_PPC64_ADDR64:
5815 if (opd_sym_map != NULL
5816 && rel + 1 < rel_end
5817 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5821 if (h->root.root.string[0] == '.'
5822 && h->root.root.string[1] != 0
5823 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5826 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5831 Elf_Internal_Sym *isym;
5833 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5838 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5839 if (s != NULL && s != sec)
5840 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5845 case R_PPC64_ADDR16:
5846 case R_PPC64_ADDR16_DS:
5847 case R_PPC64_ADDR16_HA:
5848 case R_PPC64_ADDR16_HI:
5849 case R_PPC64_ADDR16_HIGH:
5850 case R_PPC64_ADDR16_HIGHA:
5851 case R_PPC64_ADDR16_HIGHER:
5852 case R_PPC64_ADDR16_HIGHERA:
5853 case R_PPC64_ADDR16_HIGHEST:
5854 case R_PPC64_ADDR16_HIGHESTA:
5855 case R_PPC64_ADDR16_LO:
5856 case R_PPC64_ADDR16_LO_DS:
5857 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5858 && rel->r_addend == 0)
5860 /* We may need a .plt entry if this reloc refers to a
5861 function in a shared lib. */
5862 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5864 h->pointer_equality_needed = 1;
5871 case R_PPC64_ADDR32:
5872 case R_PPC64_UADDR16:
5873 case R_PPC64_UADDR32:
5874 case R_PPC64_UADDR64:
5876 if (h != NULL && !bfd_link_pic (info))
5877 /* We may need a copy reloc. */
5880 /* Don't propagate .opd relocs. */
5881 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5884 /* If we are creating a shared library, and this is a reloc
5885 against a global symbol, or a non PC relative reloc
5886 against a local symbol, then we need to copy the reloc
5887 into the shared library. However, if we are linking with
5888 -Bsymbolic, we do not need to copy a reloc against a
5889 global symbol which is defined in an object we are
5890 including in the link (i.e., DEF_REGULAR is set). At
5891 this point we have not seen all the input files, so it is
5892 possible that DEF_REGULAR is not set now but will be set
5893 later (it is never cleared). In case of a weak definition,
5894 DEF_REGULAR may be cleared later by a strong definition in
5895 a shared library. We account for that possibility below by
5896 storing information in the dyn_relocs field of the hash
5897 table entry. A similar situation occurs when creating
5898 shared libraries and symbol visibility changes render the
5901 If on the other hand, we are creating an executable, we
5902 may need to keep relocations for symbols satisfied by a
5903 dynamic library if we manage to avoid copy relocs for the
5906 if ((bfd_link_pic (info)
5907 && (must_be_dyn_reloc (info, r_type)
5909 && (!SYMBOLIC_BIND (info, h)
5910 || h->root.type == bfd_link_hash_defweak
5911 || !h->def_regular))))
5912 || (ELIMINATE_COPY_RELOCS
5913 && !bfd_link_pic (info)
5915 && (h->root.type == bfd_link_hash_defweak
5916 || !h->def_regular))
5917 || (!bfd_link_pic (info)
5920 /* We must copy these reloc types into the output file.
5921 Create a reloc section in dynobj and make room for
5925 sreloc = _bfd_elf_make_dynamic_reloc_section
5926 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5932 /* If this is a global symbol, we count the number of
5933 relocations we need for this symbol. */
5936 struct elf_dyn_relocs *p;
5937 struct elf_dyn_relocs **head;
5939 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5941 if (p == NULL || p->sec != sec)
5943 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5953 if (!must_be_dyn_reloc (info, r_type))
5958 /* Track dynamic relocs needed for local syms too.
5959 We really need local syms available to do this
5961 struct ppc_dyn_relocs *p;
5962 struct ppc_dyn_relocs **head;
5963 bfd_boolean is_ifunc;
5966 Elf_Internal_Sym *isym;
5968 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5973 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5977 vpp = &elf_section_data (s)->local_dynrel;
5978 head = (struct ppc_dyn_relocs **) vpp;
5979 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5981 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5983 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5985 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5991 p->ifunc = is_ifunc;
6007 /* Merge backend specific data from an object file to the output
6008 object file when linking. */
6011 ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6013 bfd *obfd = info->output_bfd;
6014 unsigned long iflags, oflags;
6016 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
6019 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6022 if (!_bfd_generic_verify_endian_match (ibfd, info))
6025 iflags = elf_elfheader (ibfd)->e_flags;
6026 oflags = elf_elfheader (obfd)->e_flags;
6028 if (iflags & ~EF_PPC64_ABI)
6031 /* xgettext:c-format */
6032 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
6033 bfd_set_error (bfd_error_bad_value);
6036 else if (iflags != oflags && iflags != 0)
6039 /* xgettext:c-format */
6040 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6041 ibfd, iflags, oflags);
6042 bfd_set_error (bfd_error_bad_value);
6046 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
6048 /* Merge Tag_compatibility attributes and any common GNU ones. */
6049 _bfd_elf_merge_object_attributes (ibfd, info);
6055 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6057 /* Print normal ELF private data. */
6058 _bfd_elf_print_private_bfd_data (abfd, ptr);
6060 if (elf_elfheader (abfd)->e_flags != 0)
6064 fprintf (file, _("private flags = 0x%lx:"),
6065 elf_elfheader (abfd)->e_flags);
6067 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6068 fprintf (file, _(" [abiv%ld]"),
6069 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6076 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6077 of the code entry point, and its section, which must be in the same
6078 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6081 opd_entry_value (asection *opd_sec,
6083 asection **code_sec,
6085 bfd_boolean in_code_sec)
6087 bfd *opd_bfd = opd_sec->owner;
6088 Elf_Internal_Rela *relocs;
6089 Elf_Internal_Rela *lo, *hi, *look;
6092 /* No relocs implies we are linking a --just-symbols object, or looking
6093 at a final linked executable with addr2line or somesuch. */
6094 if (opd_sec->reloc_count == 0)
6096 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6098 if (contents == NULL)
6100 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6101 return (bfd_vma) -1;
6102 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6105 /* PR 17512: file: 64b9dfbb. */
6106 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6107 return (bfd_vma) -1;
6109 val = bfd_get_64 (opd_bfd, contents + offset);
6110 if (code_sec != NULL)
6112 asection *sec, *likely = NULL;
6118 && val < sec->vma + sec->size)
6124 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6126 && (sec->flags & SEC_LOAD) != 0
6127 && (sec->flags & SEC_ALLOC) != 0)
6132 if (code_off != NULL)
6133 *code_off = val - likely->vma;
6139 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6141 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6143 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6144 /* PR 17512: file: df8e1fd6. */
6146 return (bfd_vma) -1;
6148 /* Go find the opd reloc at the sym address. */
6150 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6154 look = lo + (hi - lo) / 2;
6155 if (look->r_offset < offset)
6157 else if (look->r_offset > offset)
6161 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6163 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6164 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6166 unsigned long symndx = ELF64_R_SYM (look->r_info);
6167 asection *sec = NULL;
6169 if (symndx >= symtab_hdr->sh_info
6170 && elf_sym_hashes (opd_bfd) != NULL)
6172 struct elf_link_hash_entry **sym_hashes;
6173 struct elf_link_hash_entry *rh;
6175 sym_hashes = elf_sym_hashes (opd_bfd);
6176 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6179 rh = elf_follow_link (rh);
6180 if (rh->root.type != bfd_link_hash_defined
6181 && rh->root.type != bfd_link_hash_defweak)
6183 if (rh->root.u.def.section->owner == opd_bfd)
6185 val = rh->root.u.def.value;
6186 sec = rh->root.u.def.section;
6193 Elf_Internal_Sym *sym;
6195 if (symndx < symtab_hdr->sh_info)
6197 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6200 size_t symcnt = symtab_hdr->sh_info;
6201 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6206 symtab_hdr->contents = (bfd_byte *) sym;
6212 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6218 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6221 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6222 val = sym->st_value;
6225 val += look->r_addend;
6226 if (code_off != NULL)
6228 if (code_sec != NULL)
6230 if (in_code_sec && *code_sec != sec)
6235 if (sec->output_section != NULL)
6236 val += sec->output_section->vma + sec->output_offset;
6245 /* If the ELF symbol SYM might be a function in SEC, return the
6246 function size and set *CODE_OFF to the function's entry point,
6247 otherwise return zero. */
6249 static bfd_size_type
6250 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6255 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6256 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6260 if (!(sym->flags & BSF_SYNTHETIC))
6261 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6263 if (strcmp (sym->section->name, ".opd") == 0)
6265 struct _opd_sec_data *opd = get_opd_info (sym->section);
6266 bfd_vma symval = sym->value;
6269 && opd->adjust != NULL
6270 && elf_section_data (sym->section)->relocs != NULL)
6272 /* opd_entry_value will use cached relocs that have been
6273 adjusted, but with raw symbols. That means both local
6274 and global symbols need adjusting. */
6275 long adjust = opd->adjust[OPD_NDX (symval)];
6281 if (opd_entry_value (sym->section, symval,
6282 &sec, code_off, TRUE) == (bfd_vma) -1)
6284 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6285 symbol. This size has nothing to do with the code size of the
6286 function, which is what we're supposed to return, but the
6287 code size isn't available without looking up the dot-sym.
6288 However, doing that would be a waste of time particularly
6289 since elf_find_function will look at the dot-sym anyway.
6290 Now, elf_find_function will keep the largest size of any
6291 function sym found at the code address of interest, so return
6292 1 here to avoid it incorrectly caching a larger function size
6293 for a small function. This does mean we return the wrong
6294 size for a new-ABI function of size 24, but all that does is
6295 disable caching for such functions. */
6301 if (sym->section != sec)
6303 *code_off = sym->value;
6310 /* Return true if symbol is defined in a regular object file. */
6313 is_static_defined (struct elf_link_hash_entry *h)
6315 return ((h->root.type == bfd_link_hash_defined
6316 || h->root.type == bfd_link_hash_defweak)
6317 && h->root.u.def.section != NULL
6318 && h->root.u.def.section->output_section != NULL);
6321 /* If FDH is a function descriptor symbol, return the associated code
6322 entry symbol if it is defined. Return NULL otherwise. */
6324 static struct ppc_link_hash_entry *
6325 defined_code_entry (struct ppc_link_hash_entry *fdh)
6327 if (fdh->is_func_descriptor)
6329 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6330 if (fh->elf.root.type == bfd_link_hash_defined
6331 || fh->elf.root.type == bfd_link_hash_defweak)
6337 /* If FH is a function code entry symbol, return the associated
6338 function descriptor symbol if it is defined. Return NULL otherwise. */
6340 static struct ppc_link_hash_entry *
6341 defined_func_desc (struct ppc_link_hash_entry *fh)
6344 && fh->oh->is_func_descriptor)
6346 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6347 if (fdh->elf.root.type == bfd_link_hash_defined
6348 || fdh->elf.root.type == bfd_link_hash_defweak)
6354 /* Mark all our entry sym sections, both opd and code section. */
6357 ppc64_elf_gc_keep (struct bfd_link_info *info)
6359 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6360 struct bfd_sym_chain *sym;
6365 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6367 struct ppc_link_hash_entry *eh, *fh;
6370 eh = (struct ppc_link_hash_entry *)
6371 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6374 if (eh->elf.root.type != bfd_link_hash_defined
6375 && eh->elf.root.type != bfd_link_hash_defweak)
6378 fh = defined_code_entry (eh);
6381 sec = fh->elf.root.u.def.section;
6382 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 &sec, NULL, FALSE) != (bfd_vma) -1)
6388 sec->flags |= SEC_KEEP;
6390 sec = eh->elf.root.u.def.section;
6391 sec->flags |= SEC_KEEP;
6395 /* Mark sections containing dynamically referenced symbols. When
6396 building shared libraries, we must assume that any visible symbol is
6400 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6402 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6403 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6404 struct ppc_link_hash_entry *fdh;
6405 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6407 /* Dynamic linking info is on the func descriptor sym. */
6408 fdh = defined_func_desc (eh);
6412 if ((eh->elf.root.type == bfd_link_hash_defined
6413 || eh->elf.root.type == bfd_link_hash_defweak)
6414 && (eh->elf.ref_dynamic
6415 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6416 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6417 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6418 && (!bfd_link_executable (info)
6419 || info->export_dynamic
6422 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6423 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6424 || !bfd_hide_sym_by_version (info->version_info,
6425 eh->elf.root.root.string)))))
6428 struct ppc_link_hash_entry *fh;
6430 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6432 /* Function descriptor syms cause the associated
6433 function code sym section to be marked. */
6434 fh = defined_code_entry (eh);
6437 code_sec = fh->elf.root.u.def.section;
6438 code_sec->flags |= SEC_KEEP;
6440 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6441 && opd_entry_value (eh->elf.root.u.def.section,
6442 eh->elf.root.u.def.value,
6443 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6444 code_sec->flags |= SEC_KEEP;
6450 /* Return the section that should be marked against GC for a given
6454 ppc64_elf_gc_mark_hook (asection *sec,
6455 struct bfd_link_info *info,
6456 Elf_Internal_Rela *rel,
6457 struct elf_link_hash_entry *h,
6458 Elf_Internal_Sym *sym)
6462 /* Syms return NULL if we're marking .opd, so we avoid marking all
6463 function sections, as all functions are referenced in .opd. */
6465 if (get_opd_info (sec) != NULL)
6470 enum elf_ppc64_reloc_type r_type;
6471 struct ppc_link_hash_entry *eh, *fh, *fdh;
6473 r_type = ELF64_R_TYPE (rel->r_info);
6476 case R_PPC64_GNU_VTINHERIT:
6477 case R_PPC64_GNU_VTENTRY:
6481 switch (h->root.type)
6483 case bfd_link_hash_defined:
6484 case bfd_link_hash_defweak:
6485 eh = (struct ppc_link_hash_entry *) h;
6486 fdh = defined_func_desc (eh);
6490 /* Function descriptor syms cause the associated
6491 function code sym section to be marked. */
6492 fh = defined_code_entry (eh);
6495 /* They also mark their opd section. */
6496 eh->elf.root.u.def.section->gc_mark = 1;
6498 rsec = fh->elf.root.u.def.section;
6500 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6501 && opd_entry_value (eh->elf.root.u.def.section,
6502 eh->elf.root.u.def.value,
6503 &rsec, NULL, FALSE) != (bfd_vma) -1)
6504 eh->elf.root.u.def.section->gc_mark = 1;
6506 rsec = h->root.u.def.section;
6509 case bfd_link_hash_common:
6510 rsec = h->root.u.c.p->section;
6514 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6520 struct _opd_sec_data *opd;
6522 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6523 opd = get_opd_info (rsec);
6524 if (opd != NULL && opd->func_sec != NULL)
6528 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6535 /* Update the .got, .plt. and dynamic reloc reference counts for the
6536 section being removed. */
6539 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6540 asection *sec, const Elf_Internal_Rela *relocs)
6542 struct ppc_link_hash_table *htab;
6543 Elf_Internal_Shdr *symtab_hdr;
6544 struct elf_link_hash_entry **sym_hashes;
6545 struct got_entry **local_got_ents;
6546 const Elf_Internal_Rela *rel, *relend;
6548 if (bfd_link_relocatable (info))
6551 if ((sec->flags & SEC_ALLOC) == 0)
6554 elf_section_data (sec)->local_dynrel = NULL;
6556 htab = ppc_hash_table (info);
6560 symtab_hdr = &elf_symtab_hdr (abfd);
6561 sym_hashes = elf_sym_hashes (abfd);
6562 local_got_ents = elf_local_got_ents (abfd);
6564 relend = relocs + sec->reloc_count;
6565 for (rel = relocs; rel < relend; rel++)
6567 unsigned long r_symndx;
6568 enum elf_ppc64_reloc_type r_type;
6569 struct elf_link_hash_entry *h = NULL;
6570 struct plt_entry **plt_list;
6571 unsigned char tls_type = 0;
6573 r_symndx = ELF64_R_SYM (rel->r_info);
6574 r_type = ELF64_R_TYPE (rel->r_info);
6575 if (r_symndx >= symtab_hdr->sh_info)
6577 struct ppc_link_hash_entry *eh;
6578 struct elf_dyn_relocs **pp;
6579 struct elf_dyn_relocs *p;
6581 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6582 h = elf_follow_link (h);
6583 eh = (struct ppc_link_hash_entry *) h;
6585 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6588 /* Everything must go for SEC. */
6596 case R_PPC64_GOT_TLSLD16:
6597 case R_PPC64_GOT_TLSLD16_LO:
6598 case R_PPC64_GOT_TLSLD16_HI:
6599 case R_PPC64_GOT_TLSLD16_HA:
6600 tls_type = TLS_TLS | TLS_LD;
6603 case R_PPC64_GOT_TLSGD16:
6604 case R_PPC64_GOT_TLSGD16_LO:
6605 case R_PPC64_GOT_TLSGD16_HI:
6606 case R_PPC64_GOT_TLSGD16_HA:
6607 tls_type = TLS_TLS | TLS_GD;
6610 case R_PPC64_GOT_TPREL16_DS:
6611 case R_PPC64_GOT_TPREL16_LO_DS:
6612 case R_PPC64_GOT_TPREL16_HI:
6613 case R_PPC64_GOT_TPREL16_HA:
6614 tls_type = TLS_TLS | TLS_TPREL;
6617 case R_PPC64_GOT_DTPREL16_DS:
6618 case R_PPC64_GOT_DTPREL16_LO_DS:
6619 case R_PPC64_GOT_DTPREL16_HI:
6620 case R_PPC64_GOT_DTPREL16_HA:
6621 tls_type = TLS_TLS | TLS_DTPREL;
6625 case R_PPC64_GOT16_DS:
6626 case R_PPC64_GOT16_HA:
6627 case R_PPC64_GOT16_HI:
6628 case R_PPC64_GOT16_LO:
6629 case R_PPC64_GOT16_LO_DS:
6632 struct got_entry *ent;
6637 ent = local_got_ents[r_symndx];
6639 for (; ent != NULL; ent = ent->next)
6640 if (ent->addend == rel->r_addend
6641 && ent->owner == abfd
6642 && ent->tls_type == tls_type)
6646 if (ent->got.refcount > 0)
6647 ent->got.refcount -= 1;
6651 case R_PPC64_PLT16_HA:
6652 case R_PPC64_PLT16_HI:
6653 case R_PPC64_PLT16_LO:
6657 case R_PPC64_REL14_BRNTAKEN:
6658 case R_PPC64_REL14_BRTAKEN:
6662 plt_list = &h->plt.plist;
6663 else if (local_got_ents != NULL)
6665 struct plt_entry **local_plt = (struct plt_entry **)
6666 (local_got_ents + symtab_hdr->sh_info);
6667 unsigned char *local_got_tls_masks = (unsigned char *)
6668 (local_plt + symtab_hdr->sh_info);
6669 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6670 plt_list = local_plt + r_symndx;
6674 struct plt_entry *ent;
6676 for (ent = *plt_list; ent != NULL; ent = ent->next)
6677 if (ent->addend == rel->r_addend)
6679 if (ent != NULL && ent->plt.refcount > 0)
6680 ent->plt.refcount -= 1;
6691 /* The maximum size of .sfpr. */
6692 #define SFPR_MAX (218*4)
6694 struct sfpr_def_parms
6696 const char name[12];
6697 unsigned char lo, hi;
6698 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6699 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6702 /* Auto-generate _save*, _rest* functions in .sfpr.
6703 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6707 sfpr_define (struct bfd_link_info *info,
6708 const struct sfpr_def_parms *parm,
6711 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6713 size_t len = strlen (parm->name);
6714 bfd_boolean writing = FALSE;
6720 memcpy (sym, parm->name, len);
6723 for (i = parm->lo; i <= parm->hi; i++)
6725 struct ppc_link_hash_entry *h;
6727 sym[len + 0] = i / 10 + '0';
6728 sym[len + 1] = i % 10 + '0';
6729 h = (struct ppc_link_hash_entry *)
6730 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6731 if (stub_sec != NULL)
6734 && h->elf.root.type == bfd_link_hash_defined
6735 && h->elf.root.u.def.section == htab->sfpr)
6737 struct elf_link_hash_entry *s;
6739 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6740 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6743 if (s->root.type == bfd_link_hash_new
6744 || (s->root.type = bfd_link_hash_defined
6745 && s->root.u.def.section == stub_sec))
6747 s->root.type = bfd_link_hash_defined;
6748 s->root.u.def.section = stub_sec;
6749 s->root.u.def.value = (stub_sec->size
6750 + h->elf.root.u.def.value);
6753 s->ref_regular_nonweak = 1;
6754 s->forced_local = 1;
6756 s->root.linker_def = 1;
6764 if (!h->elf.def_regular)
6766 h->elf.root.type = bfd_link_hash_defined;
6767 h->elf.root.u.def.section = htab->sfpr;
6768 h->elf.root.u.def.value = htab->sfpr->size;
6769 h->elf.type = STT_FUNC;
6770 h->elf.def_regular = 1;
6772 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6774 if (htab->sfpr->contents == NULL)
6776 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6777 if (htab->sfpr->contents == NULL)
6784 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6786 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6788 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6789 htab->sfpr->size = p - htab->sfpr->contents;
6797 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6799 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6804 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6806 p = savegpr0 (abfd, p, r);
6807 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6809 bfd_put_32 (abfd, BLR, p);
6814 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6816 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6821 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6823 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6825 p = restgpr0 (abfd, p, r);
6826 bfd_put_32 (abfd, MTLR_R0, p);
6830 p = restgpr0 (abfd, p, 30);
6831 p = restgpr0 (abfd, p, 31);
6833 bfd_put_32 (abfd, BLR, p);
6838 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6840 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6845 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6847 p = savegpr1 (abfd, p, r);
6848 bfd_put_32 (abfd, BLR, p);
6853 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6855 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6860 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6862 p = restgpr1 (abfd, p, r);
6863 bfd_put_32 (abfd, BLR, p);
6868 savefpr (bfd *abfd, bfd_byte *p, int r)
6870 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6875 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6877 p = savefpr (abfd, p, r);
6878 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6880 bfd_put_32 (abfd, BLR, p);
6885 restfpr (bfd *abfd, bfd_byte *p, int r)
6887 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6892 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6894 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6896 p = restfpr (abfd, p, r);
6897 bfd_put_32 (abfd, MTLR_R0, p);
6901 p = restfpr (abfd, p, 30);
6902 p = restfpr (abfd, p, 31);
6904 bfd_put_32 (abfd, BLR, p);
6909 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6911 p = savefpr (abfd, p, r);
6912 bfd_put_32 (abfd, BLR, p);
6917 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6919 p = restfpr (abfd, p, r);
6920 bfd_put_32 (abfd, BLR, p);
6925 savevr (bfd *abfd, bfd_byte *p, int r)
6927 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6929 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6934 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6936 p = savevr (abfd, p, r);
6937 bfd_put_32 (abfd, BLR, p);
6942 restvr (bfd *abfd, bfd_byte *p, int r)
6944 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6946 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6951 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6953 p = restvr (abfd, p, r);
6954 bfd_put_32 (abfd, BLR, p);
6958 /* Called via elf_link_hash_traverse to transfer dynamic linking
6959 information on function code symbol entries to their corresponding
6960 function descriptor symbol entries. */
6963 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6965 struct bfd_link_info *info;
6966 struct ppc_link_hash_table *htab;
6967 struct plt_entry *ent;
6968 struct ppc_link_hash_entry *fh;
6969 struct ppc_link_hash_entry *fdh;
6970 bfd_boolean force_local;
6972 fh = (struct ppc_link_hash_entry *) h;
6973 if (fh->elf.root.type == bfd_link_hash_indirect)
6977 htab = ppc_hash_table (info);
6981 /* Resolve undefined references to dot-symbols as the value
6982 in the function descriptor, if we have one in a regular object.
6983 This is to satisfy cases like ".quad .foo". Calls to functions
6984 in dynamic objects are handled elsewhere. */
6985 if (fh->elf.root.type == bfd_link_hash_undefweak
6986 && fh->was_undefined
6987 && (fdh = defined_func_desc (fh)) != NULL
6988 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6989 && opd_entry_value (fdh->elf.root.u.def.section,
6990 fdh->elf.root.u.def.value,
6991 &fh->elf.root.u.def.section,
6992 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6994 fh->elf.root.type = fdh->elf.root.type;
6995 fh->elf.forced_local = 1;
6996 fh->elf.def_regular = fdh->elf.def_regular;
6997 fh->elf.def_dynamic = fdh->elf.def_dynamic;
7000 /* If this is a function code symbol, transfer dynamic linking
7001 information to the function descriptor symbol. */
7005 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
7006 if (ent->plt.refcount > 0)
7009 || fh->elf.root.root.string[0] != '.'
7010 || fh->elf.root.root.string[1] == '\0')
7013 /* Find the corresponding function descriptor symbol. Create it
7014 as undefined if necessary. */
7016 fdh = lookup_fdh (fh, htab);
7018 && !bfd_link_executable (info)
7019 && (fh->elf.root.type == bfd_link_hash_undefined
7020 || fh->elf.root.type == bfd_link_hash_undefweak))
7022 fdh = make_fdh (info, fh);
7027 /* Fake function descriptors are made undefweak. If the function
7028 code symbol is strong undefined, make the fake sym the same.
7029 If the function code symbol is defined, then force the fake
7030 descriptor local; We can't support overriding of symbols in a
7031 shared library on a fake descriptor. */
7035 && fdh->elf.root.type == bfd_link_hash_undefweak)
7037 if (fh->elf.root.type == bfd_link_hash_undefined)
7039 fdh->elf.root.type = bfd_link_hash_undefined;
7040 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
7042 else if (fh->elf.root.type == bfd_link_hash_defined
7043 || fh->elf.root.type == bfd_link_hash_defweak)
7045 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
7050 && !fdh->elf.forced_local
7051 && (!bfd_link_executable (info)
7052 || fdh->elf.def_dynamic
7053 || fdh->elf.ref_dynamic
7054 || (fdh->elf.root.type == bfd_link_hash_undefweak
7055 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
7057 if (fdh->elf.dynindx == -1)
7058 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
7060 fdh->elf.ref_regular |= fh->elf.ref_regular;
7061 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
7062 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7063 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
7064 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
7066 move_plt_plist (fh, fdh);
7067 fdh->elf.needs_plt = 1;
7069 fdh->is_func_descriptor = 1;
7074 /* Now that the info is on the function descriptor, clear the
7075 function code sym info. Any function code syms for which we
7076 don't have a definition in a regular file, we force local.
7077 This prevents a shared library from exporting syms that have
7078 been imported from another library. Function code syms that
7079 are really in the library we must leave global to prevent the
7080 linker dragging in a definition from a static library. */
7081 force_local = (!fh->elf.def_regular
7083 || !fdh->elf.def_regular
7084 || fdh->elf.forced_local);
7085 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7090 static const struct sfpr_def_parms save_res_funcs[] =
7092 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7093 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7094 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7095 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7096 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7097 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7098 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7099 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7100 { "._savef", 14, 31, savefpr, savefpr1_tail },
7101 { "._restf", 14, 31, restfpr, restfpr1_tail },
7102 { "_savevr_", 20, 31, savevr, savevr_tail },
7103 { "_restvr_", 20, 31, restvr, restvr_tail }
7106 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7107 this hook to a) provide some gcc support functions, and b) transfer
7108 dynamic linking information gathered so far on function code symbol
7109 entries, to their corresponding function descriptor symbol entries. */
7112 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7113 struct bfd_link_info *info)
7115 struct ppc_link_hash_table *htab;
7117 htab = ppc_hash_table (info);
7121 /* Provide any missing _save* and _rest* functions. */
7122 if (htab->sfpr != NULL)
7126 htab->sfpr->size = 0;
7127 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7128 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7130 if (htab->sfpr->size == 0)
7131 htab->sfpr->flags |= SEC_EXCLUDE;
7134 if (bfd_link_relocatable (info))
7137 if (htab->elf.hgot != NULL)
7139 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7140 /* Make .TOC. defined so as to prevent it being made dynamic.
7141 The wrong value here is fixed later in ppc64_elf_set_toc. */
7142 if (!htab->elf.hgot->def_regular
7143 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7145 htab->elf.hgot->root.type = bfd_link_hash_defined;
7146 htab->elf.hgot->root.u.def.value = 0;
7147 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7148 htab->elf.hgot->def_regular = 1;
7149 htab->elf.hgot->root.linker_def = 1;
7151 htab->elf.hgot->type = STT_OBJECT;
7152 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7156 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7161 /* Return true if we have dynamic relocs against H that apply to
7162 read-only sections. */
7165 readonly_dynrelocs (struct elf_link_hash_entry *h)
7167 struct ppc_link_hash_entry *eh;
7168 struct elf_dyn_relocs *p;
7170 eh = (struct ppc_link_hash_entry *) h;
7171 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7173 asection *s = p->sec->output_section;
7175 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7181 /* Return true if we have dynamic relocs against H or any of its weak
7182 aliases, that apply to read-only sections. */
7185 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7187 struct ppc_link_hash_entry *eh;
7189 eh = (struct ppc_link_hash_entry *) h;
7192 if (readonly_dynrelocs (&eh->elf))
7195 } while (eh != NULL && &eh->elf != h);
7200 /* Return whether EH has pc-relative dynamic relocs. */
7203 pc_dynrelocs (struct ppc_link_hash_entry *eh)
7205 struct elf_dyn_relocs *p;
7207 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7208 if (p->pc_count != 0)
7213 /* Return true if a global entry stub will be created for H. Valid
7214 for ELFv2 before plt entries have been allocated. */
7217 global_entry_stub (struct elf_link_hash_entry *h)
7219 struct plt_entry *pent;
7221 if (!h->pointer_equality_needed
7225 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7226 if (pent->plt.refcount > 0
7227 && pent->addend == 0)
7233 /* Adjust a symbol defined by a dynamic object and referenced by a
7234 regular object. The current definition is in some section of the
7235 dynamic object, but we're not including those sections. We have to
7236 change the definition to something the rest of the link can
7240 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7241 struct elf_link_hash_entry *h)
7243 struct ppc_link_hash_table *htab;
7246 htab = ppc_hash_table (info);
7250 /* Deal with function syms. */
7251 if (h->type == STT_FUNC
7252 || h->type == STT_GNU_IFUNC
7255 /* Clear procedure linkage table information for any symbol that
7256 won't need a .plt entry. */
7257 struct plt_entry *ent;
7258 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7259 if (ent->plt.refcount > 0)
7262 || (h->type != STT_GNU_IFUNC
7263 && (SYMBOL_CALLS_LOCAL (info, h)
7264 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7265 && h->root.type == bfd_link_hash_undefweak)))
7266 || ((struct ppc_link_hash_entry *) h)->save_res)
7268 h->plt.plist = NULL;
7270 h->pointer_equality_needed = 0;
7272 else if (abiversion (info->output_bfd) >= 2)
7274 /* Taking a function's address in a read/write section
7275 doesn't require us to define the function symbol in the
7276 executable on a global entry stub. A dynamic reloc can
7277 be used instead. The reason we prefer a few more dynamic
7278 relocs is that calling via a global entry stub costs a
7279 few more instructions, and pointer_equality_needed causes
7280 extra work in ld.so when resolving these symbols. */
7281 if (global_entry_stub (h)
7282 && !alias_readonly_dynrelocs (h))
7284 h->pointer_equality_needed = 0;
7285 /* After adjust_dynamic_symbol, non_got_ref set in
7286 the non-pic case means that dyn_relocs for this
7287 symbol should be discarded. */
7291 /* If making a plt entry, then we don't need copy relocs. */
7296 h->plt.plist = NULL;
7298 /* If this is a weak symbol, and there is a real definition, the
7299 processor independent code will have arranged for us to see the
7300 real definition first, and we can just use the same value. */
7301 if (h->u.weakdef != NULL)
7303 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7304 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7305 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7306 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7307 if (ELIMINATE_COPY_RELOCS)
7308 h->non_got_ref = h->u.weakdef->non_got_ref;
7312 /* If we are creating a shared library, we must presume that the
7313 only references to the symbol are via the global offset table.
7314 For such cases we need not do anything here; the relocations will
7315 be handled correctly by relocate_section. */
7316 if (bfd_link_pic (info))
7319 /* If there are no references to this symbol that do not use the
7320 GOT, we don't need to generate a copy reloc. */
7321 if (!h->non_got_ref)
7324 /* Don't generate a copy reloc for symbols defined in the executable. */
7325 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7327 /* If -z nocopyreloc was given, don't generate them either. */
7328 || info->nocopyreloc
7330 /* If we didn't find any dynamic relocs in read-only sections, then
7331 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7332 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
7334 /* Protected variables do not work with .dynbss. The copy in
7335 .dynbss won't be used by the shared library with the protected
7336 definition for the variable. Text relocations are preferable
7337 to an incorrect program. */
7338 || h->protected_def)
7344 if (h->plt.plist != NULL)
7346 /* We should never get here, but unfortunately there are versions
7347 of gcc out there that improperly (for this ABI) put initialized
7348 function pointers, vtable refs and suchlike in read-only
7349 sections. Allow them to proceed, but warn that this might
7350 break at runtime. */
7351 info->callbacks->einfo
7352 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7353 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7354 h->root.root.string);
7357 /* This is a reference to a symbol defined by a dynamic object which
7358 is not a function. */
7360 /* We must allocate the symbol in our .dynbss section, which will
7361 become part of the .bss section of the executable. There will be
7362 an entry for this symbol in the .dynsym section. The dynamic
7363 object will contain position independent code, so all references
7364 from the dynamic object to this symbol will go through the global
7365 offset table. The dynamic linker will use the .dynsym entry to
7366 determine the address it must put in the global offset table, so
7367 both the dynamic object and the regular object will refer to the
7368 same memory location for the variable. */
7370 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7371 to copy the initial value out of the dynamic object and into the
7372 runtime process image. We need to remember the offset into the
7373 .rela.bss section we are going to use. */
7374 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7376 htab->relbss->size += sizeof (Elf64_External_Rela);
7382 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7385 /* If given a function descriptor symbol, hide both the function code
7386 sym and the descriptor. */
7388 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7389 struct elf_link_hash_entry *h,
7390 bfd_boolean force_local)
7392 struct ppc_link_hash_entry *eh;
7393 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7395 eh = (struct ppc_link_hash_entry *) h;
7396 if (eh->is_func_descriptor)
7398 struct ppc_link_hash_entry *fh = eh->oh;
7403 struct ppc_link_hash_table *htab;
7406 /* We aren't supposed to use alloca in BFD because on
7407 systems which do not have alloca the version in libiberty
7408 calls xmalloc, which might cause the program to crash
7409 when it runs out of memory. This function doesn't have a
7410 return status, so there's no way to gracefully return an
7411 error. So cheat. We know that string[-1] can be safely
7412 accessed; It's either a string in an ELF string table,
7413 or allocated in an objalloc structure. */
7415 p = eh->elf.root.root.string - 1;
7418 htab = ppc_hash_table (info);
7422 fh = (struct ppc_link_hash_entry *)
7423 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7426 /* Unfortunately, if it so happens that the string we were
7427 looking for was allocated immediately before this string,
7428 then we overwrote the string terminator. That's the only
7429 reason the lookup should fail. */
7432 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7433 while (q >= eh->elf.root.root.string && *q == *p)
7435 if (q < eh->elf.root.root.string && *p == '.')
7436 fh = (struct ppc_link_hash_entry *)
7437 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7446 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7451 get_sym_h (struct elf_link_hash_entry **hp,
7452 Elf_Internal_Sym **symp,
7454 unsigned char **tls_maskp,
7455 Elf_Internal_Sym **locsymsp,
7456 unsigned long r_symndx,
7459 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7461 if (r_symndx >= symtab_hdr->sh_info)
7463 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7464 struct elf_link_hash_entry *h;
7466 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7467 h = elf_follow_link (h);
7475 if (symsecp != NULL)
7477 asection *symsec = NULL;
7478 if (h->root.type == bfd_link_hash_defined
7479 || h->root.type == bfd_link_hash_defweak)
7480 symsec = h->root.u.def.section;
7484 if (tls_maskp != NULL)
7486 struct ppc_link_hash_entry *eh;
7488 eh = (struct ppc_link_hash_entry *) h;
7489 *tls_maskp = &eh->tls_mask;
7494 Elf_Internal_Sym *sym;
7495 Elf_Internal_Sym *locsyms = *locsymsp;
7497 if (locsyms == NULL)
7499 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7500 if (locsyms == NULL)
7501 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7502 symtab_hdr->sh_info,
7503 0, NULL, NULL, NULL);
7504 if (locsyms == NULL)
7506 *locsymsp = locsyms;
7508 sym = locsyms + r_symndx;
7516 if (symsecp != NULL)
7517 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7519 if (tls_maskp != NULL)
7521 struct got_entry **lgot_ents;
7522 unsigned char *tls_mask;
7525 lgot_ents = elf_local_got_ents (ibfd);
7526 if (lgot_ents != NULL)
7528 struct plt_entry **local_plt = (struct plt_entry **)
7529 (lgot_ents + symtab_hdr->sh_info);
7530 unsigned char *lgot_masks = (unsigned char *)
7531 (local_plt + symtab_hdr->sh_info);
7532 tls_mask = &lgot_masks[r_symndx];
7534 *tls_maskp = tls_mask;
7540 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7541 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7542 type suitable for optimization, and 1 otherwise. */
7545 get_tls_mask (unsigned char **tls_maskp,
7546 unsigned long *toc_symndx,
7547 bfd_vma *toc_addend,
7548 Elf_Internal_Sym **locsymsp,
7549 const Elf_Internal_Rela *rel,
7552 unsigned long r_symndx;
7554 struct elf_link_hash_entry *h;
7555 Elf_Internal_Sym *sym;
7559 r_symndx = ELF64_R_SYM (rel->r_info);
7560 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7563 if ((*tls_maskp != NULL && **tls_maskp != 0)
7565 || ppc64_elf_section_data (sec) == NULL
7566 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7569 /* Look inside a TOC section too. */
7572 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7573 off = h->root.u.def.value;
7576 off = sym->st_value;
7577 off += rel->r_addend;
7578 BFD_ASSERT (off % 8 == 0);
7579 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7580 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7581 if (toc_symndx != NULL)
7582 *toc_symndx = r_symndx;
7583 if (toc_addend != NULL)
7584 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7585 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7587 if ((h == NULL || is_static_defined (h))
7588 && (next_r == -1 || next_r == -2))
7593 /* Find (or create) an entry in the tocsave hash table. */
7595 static struct tocsave_entry *
7596 tocsave_find (struct ppc_link_hash_table *htab,
7597 enum insert_option insert,
7598 Elf_Internal_Sym **local_syms,
7599 const Elf_Internal_Rela *irela,
7602 unsigned long r_indx;
7603 struct elf_link_hash_entry *h;
7604 Elf_Internal_Sym *sym;
7605 struct tocsave_entry ent, *p;
7607 struct tocsave_entry **slot;
7609 r_indx = ELF64_R_SYM (irela->r_info);
7610 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7612 if (ent.sec == NULL || ent.sec->output_section == NULL)
7615 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7620 ent.offset = h->root.u.def.value;
7622 ent.offset = sym->st_value;
7623 ent.offset += irela->r_addend;
7625 hash = tocsave_htab_hash (&ent);
7626 slot = ((struct tocsave_entry **)
7627 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7633 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7642 /* Adjust all global syms defined in opd sections. In gcc generated
7643 code for the old ABI, these will already have been done. */
7646 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7648 struct ppc_link_hash_entry *eh;
7650 struct _opd_sec_data *opd;
7652 if (h->root.type == bfd_link_hash_indirect)
7655 if (h->root.type != bfd_link_hash_defined
7656 && h->root.type != bfd_link_hash_defweak)
7659 eh = (struct ppc_link_hash_entry *) h;
7660 if (eh->adjust_done)
7663 sym_sec = eh->elf.root.u.def.section;
7664 opd = get_opd_info (sym_sec);
7665 if (opd != NULL && opd->adjust != NULL)
7667 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7670 /* This entry has been deleted. */
7671 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7674 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7675 if (discarded_section (dsec))
7677 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7681 eh->elf.root.u.def.value = 0;
7682 eh->elf.root.u.def.section = dsec;
7685 eh->elf.root.u.def.value += adjust;
7686 eh->adjust_done = 1;
7691 /* Handles decrementing dynamic reloc counts for the reloc specified by
7692 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7693 have already been determined. */
7696 dec_dynrel_count (bfd_vma r_info,
7698 struct bfd_link_info *info,
7699 Elf_Internal_Sym **local_syms,
7700 struct elf_link_hash_entry *h,
7701 Elf_Internal_Sym *sym)
7703 enum elf_ppc64_reloc_type r_type;
7704 asection *sym_sec = NULL;
7706 /* Can this reloc be dynamic? This switch, and later tests here
7707 should be kept in sync with the code in check_relocs. */
7708 r_type = ELF64_R_TYPE (r_info);
7714 case R_PPC64_TPREL16:
7715 case R_PPC64_TPREL16_LO:
7716 case R_PPC64_TPREL16_HI:
7717 case R_PPC64_TPREL16_HA:
7718 case R_PPC64_TPREL16_DS:
7719 case R_PPC64_TPREL16_LO_DS:
7720 case R_PPC64_TPREL16_HIGH:
7721 case R_PPC64_TPREL16_HIGHA:
7722 case R_PPC64_TPREL16_HIGHER:
7723 case R_PPC64_TPREL16_HIGHERA:
7724 case R_PPC64_TPREL16_HIGHEST:
7725 case R_PPC64_TPREL16_HIGHESTA:
7726 if (!bfd_link_pic (info))
7729 case R_PPC64_TPREL64:
7730 case R_PPC64_DTPMOD64:
7731 case R_PPC64_DTPREL64:
7732 case R_PPC64_ADDR64:
7736 case R_PPC64_ADDR14:
7737 case R_PPC64_ADDR14_BRNTAKEN:
7738 case R_PPC64_ADDR14_BRTAKEN:
7739 case R_PPC64_ADDR16:
7740 case R_PPC64_ADDR16_DS:
7741 case R_PPC64_ADDR16_HA:
7742 case R_PPC64_ADDR16_HI:
7743 case R_PPC64_ADDR16_HIGH:
7744 case R_PPC64_ADDR16_HIGHA:
7745 case R_PPC64_ADDR16_HIGHER:
7746 case R_PPC64_ADDR16_HIGHERA:
7747 case R_PPC64_ADDR16_HIGHEST:
7748 case R_PPC64_ADDR16_HIGHESTA:
7749 case R_PPC64_ADDR16_LO:
7750 case R_PPC64_ADDR16_LO_DS:
7751 case R_PPC64_ADDR24:
7752 case R_PPC64_ADDR32:
7753 case R_PPC64_UADDR16:
7754 case R_PPC64_UADDR32:
7755 case R_PPC64_UADDR64:
7760 if (local_syms != NULL)
7762 unsigned long r_symndx;
7763 bfd *ibfd = sec->owner;
7765 r_symndx = ELF64_R_SYM (r_info);
7766 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7770 if ((bfd_link_pic (info)
7771 && (must_be_dyn_reloc (info, r_type)
7773 && (!SYMBOLIC_BIND (info, h)
7774 || h->root.type == bfd_link_hash_defweak
7775 || !h->def_regular))))
7776 || (ELIMINATE_COPY_RELOCS
7777 && !bfd_link_pic (info)
7779 && (h->root.type == bfd_link_hash_defweak
7780 || !h->def_regular)))
7787 struct elf_dyn_relocs *p;
7788 struct elf_dyn_relocs **pp;
7789 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7791 /* elf_gc_sweep may have already removed all dyn relocs associated
7792 with local syms for a given section. Also, symbol flags are
7793 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7794 report a dynreloc miscount. */
7795 if (*pp == NULL && info->gc_sections)
7798 while ((p = *pp) != NULL)
7802 if (!must_be_dyn_reloc (info, r_type))
7814 struct ppc_dyn_relocs *p;
7815 struct ppc_dyn_relocs **pp;
7817 bfd_boolean is_ifunc;
7819 if (local_syms == NULL)
7820 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7821 if (sym_sec == NULL)
7824 vpp = &elf_section_data (sym_sec)->local_dynrel;
7825 pp = (struct ppc_dyn_relocs **) vpp;
7827 if (*pp == NULL && info->gc_sections)
7830 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7831 while ((p = *pp) != NULL)
7833 if (p->sec == sec && p->ifunc == is_ifunc)
7844 /* xgettext:c-format */
7845 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7847 bfd_set_error (bfd_error_bad_value);
7851 /* Remove unused Official Procedure Descriptor entries. Currently we
7852 only remove those associated with functions in discarded link-once
7853 sections, or weakly defined functions that have been overridden. It
7854 would be possible to remove many more entries for statically linked
7858 ppc64_elf_edit_opd (struct bfd_link_info *info)
7861 bfd_boolean some_edited = FALSE;
7862 asection *need_pad = NULL;
7863 struct ppc_link_hash_table *htab;
7865 htab = ppc_hash_table (info);
7869 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7872 Elf_Internal_Rela *relstart, *rel, *relend;
7873 Elf_Internal_Shdr *symtab_hdr;
7874 Elf_Internal_Sym *local_syms;
7875 struct _opd_sec_data *opd;
7876 bfd_boolean need_edit, add_aux_fields, broken;
7877 bfd_size_type cnt_16b = 0;
7879 if (!is_ppc64_elf (ibfd))
7882 sec = bfd_get_section_by_name (ibfd, ".opd");
7883 if (sec == NULL || sec->size == 0)
7886 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7889 if (sec->output_section == bfd_abs_section_ptr)
7892 /* Look through the section relocs. */
7893 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7897 symtab_hdr = &elf_symtab_hdr (ibfd);
7899 /* Read the relocations. */
7900 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7902 if (relstart == NULL)
7905 /* First run through the relocs to check they are sane, and to
7906 determine whether we need to edit this opd section. */
7910 relend = relstart + sec->reloc_count;
7911 for (rel = relstart; rel < relend; )
7913 enum elf_ppc64_reloc_type r_type;
7914 unsigned long r_symndx;
7916 struct elf_link_hash_entry *h;
7917 Elf_Internal_Sym *sym;
7920 /* .opd contains an array of 16 or 24 byte entries. We're
7921 only interested in the reloc pointing to a function entry
7923 offset = rel->r_offset;
7924 if (rel + 1 == relend
7925 || rel[1].r_offset != offset + 8)
7927 /* If someone messes with .opd alignment then after a
7928 "ld -r" we might have padding in the middle of .opd.
7929 Also, there's nothing to prevent someone putting
7930 something silly in .opd with the assembler. No .opd
7931 optimization for them! */
7934 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7939 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7940 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7943 /* xgettext:c-format */
7944 (_("%B: unexpected reloc type %u in .opd section"),
7950 r_symndx = ELF64_R_SYM (rel->r_info);
7951 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7955 if (sym_sec == NULL || sym_sec->owner == NULL)
7957 const char *sym_name;
7959 sym_name = h->root.root.string;
7961 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7965 /* xgettext:c-format */
7966 (_("%B: undefined sym `%s' in .opd section"),
7972 /* opd entries are always for functions defined in the
7973 current input bfd. If the symbol isn't defined in the
7974 input bfd, then we won't be using the function in this
7975 bfd; It must be defined in a linkonce section in another
7976 bfd, or is weak. It's also possible that we are
7977 discarding the function due to a linker script /DISCARD/,
7978 which we test for via the output_section. */
7979 if (sym_sec->owner != ibfd
7980 || sym_sec->output_section == bfd_abs_section_ptr)
7984 if (rel + 1 == relend
7985 || (rel + 2 < relend
7986 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7991 if (sec->size == offset + 24)
7996 if (sec->size == offset + 16)
8003 else if (rel + 1 < relend
8004 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
8005 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
8007 if (rel[0].r_offset == offset + 16)
8009 else if (rel[0].r_offset != offset + 24)
8016 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
8018 if (!broken && (need_edit || add_aux_fields))
8020 Elf_Internal_Rela *write_rel;
8021 Elf_Internal_Shdr *rel_hdr;
8022 bfd_byte *rptr, *wptr;
8023 bfd_byte *new_contents;
8026 new_contents = NULL;
8027 amt = OPD_NDX (sec->size) * sizeof (long);
8028 opd = &ppc64_elf_section_data (sec)->u.opd;
8029 opd->adjust = bfd_zalloc (sec->owner, amt);
8030 if (opd->adjust == NULL)
8032 ppc64_elf_section_data (sec)->sec_type = sec_opd;
8034 /* This seems a waste of time as input .opd sections are all
8035 zeros as generated by gcc, but I suppose there's no reason
8036 this will always be so. We might start putting something in
8037 the third word of .opd entries. */
8038 if ((sec->flags & SEC_IN_MEMORY) == 0)
8041 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
8046 if (local_syms != NULL
8047 && symtab_hdr->contents != (unsigned char *) local_syms)
8049 if (elf_section_data (sec)->relocs != relstart)
8053 sec->contents = loc;
8054 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8057 elf_section_data (sec)->relocs = relstart;
8059 new_contents = sec->contents;
8062 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
8063 if (new_contents == NULL)
8067 wptr = new_contents;
8068 rptr = sec->contents;
8069 write_rel = relstart;
8070 for (rel = relstart; rel < relend; )
8072 unsigned long r_symndx;
8074 struct elf_link_hash_entry *h;
8075 struct ppc_link_hash_entry *fdh = NULL;
8076 Elf_Internal_Sym *sym;
8078 Elf_Internal_Rela *next_rel;
8081 r_symndx = ELF64_R_SYM (rel->r_info);
8082 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8087 if (next_rel + 1 == relend
8088 || (next_rel + 2 < relend
8089 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
8092 /* See if the .opd entry is full 24 byte or
8093 16 byte (with fd_aux entry overlapped with next
8096 if (next_rel == relend)
8098 if (sec->size == rel->r_offset + 16)
8101 else if (next_rel->r_offset == rel->r_offset + 16)
8105 && h->root.root.string[0] == '.')
8107 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
8109 && fdh->elf.root.type != bfd_link_hash_defined
8110 && fdh->elf.root.type != bfd_link_hash_defweak)
8114 skip = (sym_sec->owner != ibfd
8115 || sym_sec->output_section == bfd_abs_section_ptr);
8118 if (fdh != NULL && sym_sec->owner == ibfd)
8120 /* Arrange for the function descriptor sym
8122 fdh->elf.root.u.def.value = 0;
8123 fdh->elf.root.u.def.section = sym_sec;
8125 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8127 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8132 if (!dec_dynrel_count (rel->r_info, sec, info,
8136 if (++rel == next_rel)
8139 r_symndx = ELF64_R_SYM (rel->r_info);
8140 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8147 /* We'll be keeping this opd entry. */
8152 /* Redefine the function descriptor symbol to
8153 this location in the opd section. It is
8154 necessary to update the value here rather
8155 than using an array of adjustments as we do
8156 for local symbols, because various places
8157 in the generic ELF code use the value
8158 stored in u.def.value. */
8159 fdh->elf.root.u.def.value = wptr - new_contents;
8160 fdh->adjust_done = 1;
8163 /* Local syms are a bit tricky. We could
8164 tweak them as they can be cached, but
8165 we'd need to look through the local syms
8166 for the function descriptor sym which we
8167 don't have at the moment. So keep an
8168 array of adjustments. */
8169 adjust = (wptr - new_contents) - (rptr - sec->contents);
8170 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8173 memcpy (wptr, rptr, opd_ent_size);
8174 wptr += opd_ent_size;
8175 if (add_aux_fields && opd_ent_size == 16)
8177 memset (wptr, '\0', 8);
8181 /* We need to adjust any reloc offsets to point to the
8183 for ( ; rel != next_rel; ++rel)
8185 rel->r_offset += adjust;
8186 if (write_rel != rel)
8187 memcpy (write_rel, rel, sizeof (*rel));
8192 rptr += opd_ent_size;
8195 sec->size = wptr - new_contents;
8196 sec->reloc_count = write_rel - relstart;
8199 free (sec->contents);
8200 sec->contents = new_contents;
8203 /* Fudge the header size too, as this is used later in
8204 elf_bfd_final_link if we are emitting relocs. */
8205 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8206 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8209 else if (elf_section_data (sec)->relocs != relstart)
8212 if (local_syms != NULL
8213 && symtab_hdr->contents != (unsigned char *) local_syms)
8215 if (!info->keep_memory)
8218 symtab_hdr->contents = (unsigned char *) local_syms;
8223 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8225 /* If we are doing a final link and the last .opd entry is just 16 byte
8226 long, add a 8 byte padding after it. */
8227 if (need_pad != NULL && !bfd_link_relocatable (info))
8231 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8233 BFD_ASSERT (need_pad->size > 0);
8235 p = bfd_malloc (need_pad->size + 8);
8239 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8240 p, 0, need_pad->size))
8243 need_pad->contents = p;
8244 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8248 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8252 need_pad->contents = p;
8255 memset (need_pad->contents + need_pad->size, 0, 8);
8256 need_pad->size += 8;
8262 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8265 ppc64_elf_tls_setup (struct bfd_link_info *info)
8267 struct ppc_link_hash_table *htab;
8269 htab = ppc_hash_table (info);
8273 if (abiversion (info->output_bfd) == 1)
8276 if (htab->params->no_multi_toc)
8277 htab->do_multi_toc = 0;
8278 else if (!htab->do_multi_toc)
8279 htab->params->no_multi_toc = 1;
8281 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8282 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8283 FALSE, FALSE, TRUE));
8284 /* Move dynamic linking info to the function descriptor sym. */
8285 if (htab->tls_get_addr != NULL)
8286 func_desc_adjust (&htab->tls_get_addr->elf, info);
8287 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8288 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8289 FALSE, FALSE, TRUE));
8290 if (htab->params->tls_get_addr_opt)
8292 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8294 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8295 FALSE, FALSE, TRUE);
8297 func_desc_adjust (opt, info);
8298 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8299 FALSE, FALSE, TRUE);
8301 && (opt_fd->root.type == bfd_link_hash_defined
8302 || opt_fd->root.type == bfd_link_hash_defweak))
8304 /* If glibc supports an optimized __tls_get_addr call stub,
8305 signalled by the presence of __tls_get_addr_opt, and we'll
8306 be calling __tls_get_addr via a plt call stub, then
8307 make __tls_get_addr point to __tls_get_addr_opt. */
8308 tga_fd = &htab->tls_get_addr_fd->elf;
8309 if (htab->elf.dynamic_sections_created
8311 && (tga_fd->type == STT_FUNC
8312 || tga_fd->needs_plt)
8313 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8314 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8315 && tga_fd->root.type == bfd_link_hash_undefweak)))
8317 struct plt_entry *ent;
8319 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8320 if (ent->plt.refcount > 0)
8324 tga_fd->root.type = bfd_link_hash_indirect;
8325 tga_fd->root.u.i.link = &opt_fd->root;
8326 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8327 opt_fd->forced_local = 0;
8328 if (opt_fd->dynindx != -1)
8330 /* Use __tls_get_addr_opt in dynamic relocations. */
8331 opt_fd->dynindx = -1;
8332 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8333 opt_fd->dynstr_index);
8334 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8337 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8338 tga = &htab->tls_get_addr->elf;
8339 if (opt != NULL && tga != NULL)
8341 tga->root.type = bfd_link_hash_indirect;
8342 tga->root.u.i.link = &opt->root;
8343 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8344 opt->forced_local = 0;
8345 _bfd_elf_link_hash_hide_symbol (info, opt,
8347 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8349 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8350 htab->tls_get_addr_fd->is_func_descriptor = 1;
8351 if (htab->tls_get_addr != NULL)
8353 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8354 htab->tls_get_addr->is_func = 1;
8359 else if (htab->params->tls_get_addr_opt < 0)
8360 htab->params->tls_get_addr_opt = 0;
8362 return _bfd_elf_tls_setup (info->output_bfd, info);
8365 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8369 branch_reloc_hash_match (const bfd *ibfd,
8370 const Elf_Internal_Rela *rel,
8371 const struct ppc_link_hash_entry *hash1,
8372 const struct ppc_link_hash_entry *hash2)
8374 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8375 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8376 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8378 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8380 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8381 struct elf_link_hash_entry *h;
8383 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8384 h = elf_follow_link (h);
8385 if (h == &hash1->elf || h == &hash2->elf)
8391 /* Run through all the TLS relocs looking for optimization
8392 opportunities. The linker has been hacked (see ppc64elf.em) to do
8393 a preliminary section layout so that we know the TLS segment
8394 offsets. We can't optimize earlier because some optimizations need
8395 to know the tp offset, and we need to optimize before allocating
8396 dynamic relocations. */
8399 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8403 struct ppc_link_hash_table *htab;
8404 unsigned char *toc_ref;
8407 if (!bfd_link_executable (info))
8410 htab = ppc_hash_table (info);
8414 /* Make two passes over the relocs. On the first pass, mark toc
8415 entries involved with tls relocs, and check that tls relocs
8416 involved in setting up a tls_get_addr call are indeed followed by
8417 such a call. If they are not, we can't do any tls optimization.
8418 On the second pass twiddle tls_mask flags to notify
8419 relocate_section that optimization can be done, and adjust got
8420 and plt refcounts. */
8422 for (pass = 0; pass < 2; ++pass)
8423 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8425 Elf_Internal_Sym *locsyms = NULL;
8426 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8428 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8429 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8431 Elf_Internal_Rela *relstart, *rel, *relend;
8432 bfd_boolean found_tls_get_addr_arg = 0;
8434 /* Read the relocations. */
8435 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8437 if (relstart == NULL)
8443 relend = relstart + sec->reloc_count;
8444 for (rel = relstart; rel < relend; rel++)
8446 enum elf_ppc64_reloc_type r_type;
8447 unsigned long r_symndx;
8448 struct elf_link_hash_entry *h;
8449 Elf_Internal_Sym *sym;
8451 unsigned char *tls_mask;
8452 unsigned char tls_set, tls_clear, tls_type = 0;
8454 bfd_boolean ok_tprel, is_local;
8455 long toc_ref_index = 0;
8456 int expecting_tls_get_addr = 0;
8457 bfd_boolean ret = FALSE;
8459 r_symndx = ELF64_R_SYM (rel->r_info);
8460 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8464 if (elf_section_data (sec)->relocs != relstart)
8466 if (toc_ref != NULL)
8469 && (elf_symtab_hdr (ibfd).contents
8470 != (unsigned char *) locsyms))
8477 if (h->root.type == bfd_link_hash_defined
8478 || h->root.type == bfd_link_hash_defweak)
8479 value = h->root.u.def.value;
8480 else if (h->root.type == bfd_link_hash_undefweak)
8484 found_tls_get_addr_arg = 0;
8489 /* Symbols referenced by TLS relocs must be of type
8490 STT_TLS. So no need for .opd local sym adjust. */
8491 value = sym->st_value;
8500 && h->root.type == bfd_link_hash_undefweak)
8502 else if (sym_sec != NULL
8503 && sym_sec->output_section != NULL)
8505 value += sym_sec->output_offset;
8506 value += sym_sec->output_section->vma;
8507 value -= htab->elf.tls_sec->vma;
8508 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8509 < (bfd_vma) 1 << 32);
8513 r_type = ELF64_R_TYPE (rel->r_info);
8514 /* If this section has old-style __tls_get_addr calls
8515 without marker relocs, then check that each
8516 __tls_get_addr call reloc is preceded by a reloc
8517 that conceivably belongs to the __tls_get_addr arg
8518 setup insn. If we don't find matching arg setup
8519 relocs, don't do any tls optimization. */
8521 && sec->has_tls_get_addr_call
8523 && (h == &htab->tls_get_addr->elf
8524 || h == &htab->tls_get_addr_fd->elf)
8525 && !found_tls_get_addr_arg
8526 && is_branch_reloc (r_type))
8528 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8529 "TLS optimization disabled\n"),
8530 ibfd, sec, rel->r_offset);
8535 found_tls_get_addr_arg = 0;
8538 case R_PPC64_GOT_TLSLD16:
8539 case R_PPC64_GOT_TLSLD16_LO:
8540 expecting_tls_get_addr = 1;
8541 found_tls_get_addr_arg = 1;
8544 case R_PPC64_GOT_TLSLD16_HI:
8545 case R_PPC64_GOT_TLSLD16_HA:
8546 /* These relocs should never be against a symbol
8547 defined in a shared lib. Leave them alone if
8548 that turns out to be the case. */
8555 tls_type = TLS_TLS | TLS_LD;
8558 case R_PPC64_GOT_TLSGD16:
8559 case R_PPC64_GOT_TLSGD16_LO:
8560 expecting_tls_get_addr = 1;
8561 found_tls_get_addr_arg = 1;
8564 case R_PPC64_GOT_TLSGD16_HI:
8565 case R_PPC64_GOT_TLSGD16_HA:
8571 tls_set = TLS_TLS | TLS_TPRELGD;
8573 tls_type = TLS_TLS | TLS_GD;
8576 case R_PPC64_GOT_TPREL16_DS:
8577 case R_PPC64_GOT_TPREL16_LO_DS:
8578 case R_PPC64_GOT_TPREL16_HI:
8579 case R_PPC64_GOT_TPREL16_HA:
8584 tls_clear = TLS_TPREL;
8585 tls_type = TLS_TLS | TLS_TPREL;
8592 found_tls_get_addr_arg = 1;
8597 case R_PPC64_TOC16_LO:
8598 if (sym_sec == NULL || sym_sec != toc)
8601 /* Mark this toc entry as referenced by a TLS
8602 code sequence. We can do that now in the
8603 case of R_PPC64_TLS, and after checking for
8604 tls_get_addr for the TOC16 relocs. */
8605 if (toc_ref == NULL)
8606 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8607 if (toc_ref == NULL)
8611 value = h->root.u.def.value;
8613 value = sym->st_value;
8614 value += rel->r_addend;
8617 BFD_ASSERT (value < toc->size
8618 && toc->output_offset % 8 == 0);
8619 toc_ref_index = (value + toc->output_offset) / 8;
8620 if (r_type == R_PPC64_TLS
8621 || r_type == R_PPC64_TLSGD
8622 || r_type == R_PPC64_TLSLD)
8624 toc_ref[toc_ref_index] = 1;
8628 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8633 expecting_tls_get_addr = 2;
8636 case R_PPC64_TPREL64:
8640 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8645 tls_set = TLS_EXPLICIT;
8646 tls_clear = TLS_TPREL;
8651 case R_PPC64_DTPMOD64:
8655 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8657 if (rel + 1 < relend
8659 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8660 && rel[1].r_offset == rel->r_offset + 8)
8664 tls_set = TLS_EXPLICIT | TLS_GD;
8667 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8676 tls_set = TLS_EXPLICIT;
8687 if (!expecting_tls_get_addr
8688 || !sec->has_tls_get_addr_call)
8691 if (rel + 1 < relend
8692 && branch_reloc_hash_match (ibfd, rel + 1,
8694 htab->tls_get_addr_fd))
8696 if (expecting_tls_get_addr == 2)
8698 /* Check for toc tls entries. */
8699 unsigned char *toc_tls;
8702 retval = get_tls_mask (&toc_tls, NULL, NULL,
8707 if (toc_tls != NULL)
8709 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8710 found_tls_get_addr_arg = 1;
8712 toc_ref[toc_ref_index] = 1;
8718 if (expecting_tls_get_addr != 1)
8721 /* Uh oh, we didn't find the expected call. We
8722 could just mark this symbol to exclude it
8723 from tls optimization but it's safer to skip
8724 the entire optimization. */
8725 /* xgettext:c-format */
8726 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8727 "TLS optimization disabled\n"),
8728 ibfd, sec, rel->r_offset);
8733 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8735 struct plt_entry *ent;
8736 for (ent = htab->tls_get_addr->elf.plt.plist;
8739 if (ent->addend == 0)
8741 if (ent->plt.refcount > 0)
8743 ent->plt.refcount -= 1;
8744 expecting_tls_get_addr = 0;
8750 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8752 struct plt_entry *ent;
8753 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8756 if (ent->addend == 0)
8758 if (ent->plt.refcount > 0)
8759 ent->plt.refcount -= 1;
8767 if ((tls_set & TLS_EXPLICIT) == 0)
8769 struct got_entry *ent;
8771 /* Adjust got entry for this reloc. */
8775 ent = elf_local_got_ents (ibfd)[r_symndx];
8777 for (; ent != NULL; ent = ent->next)
8778 if (ent->addend == rel->r_addend
8779 && ent->owner == ibfd
8780 && ent->tls_type == tls_type)
8787 /* We managed to get rid of a got entry. */
8788 if (ent->got.refcount > 0)
8789 ent->got.refcount -= 1;
8794 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8795 we'll lose one or two dyn relocs. */
8796 if (!dec_dynrel_count (rel->r_info, sec, info,
8800 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8802 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8808 *tls_mask |= tls_set;
8809 *tls_mask &= ~tls_clear;
8812 if (elf_section_data (sec)->relocs != relstart)
8817 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8819 if (!info->keep_memory)
8822 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8826 if (toc_ref != NULL)
8831 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8832 the values of any global symbols in a toc section that has been
8833 edited. Globals in toc sections should be a rarity, so this function
8834 sets a flag if any are found in toc sections other than the one just
8835 edited, so that futher hash table traversals can be avoided. */
8837 struct adjust_toc_info
8840 unsigned long *skip;
8841 bfd_boolean global_toc_syms;
8844 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8847 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8849 struct ppc_link_hash_entry *eh;
8850 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8853 if (h->root.type != bfd_link_hash_defined
8854 && h->root.type != bfd_link_hash_defweak)
8857 eh = (struct ppc_link_hash_entry *) h;
8858 if (eh->adjust_done)
8861 if (eh->elf.root.u.def.section == toc_inf->toc)
8863 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8864 i = toc_inf->toc->rawsize >> 3;
8866 i = eh->elf.root.u.def.value >> 3;
8868 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8871 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8874 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8875 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8878 eh->elf.root.u.def.value -= toc_inf->skip[i];
8879 eh->adjust_done = 1;
8881 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8882 toc_inf->global_toc_syms = TRUE;
8887 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8890 ok_lo_toc_insn (unsigned int insn)
8892 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8893 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8894 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8895 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8896 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8897 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8898 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8899 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8900 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8901 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8902 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8903 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8904 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8905 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8906 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8908 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8909 && ((insn & 3) == 0 || (insn & 3) == 3))
8910 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8913 /* Examine all relocs referencing .toc sections in order to remove
8914 unused .toc entries. */
8917 ppc64_elf_edit_toc (struct bfd_link_info *info)
8920 struct adjust_toc_info toc_inf;
8921 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8923 htab->do_toc_opt = 1;
8924 toc_inf.global_toc_syms = TRUE;
8925 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8927 asection *toc, *sec;
8928 Elf_Internal_Shdr *symtab_hdr;
8929 Elf_Internal_Sym *local_syms;
8930 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8931 unsigned long *skip, *drop;
8932 unsigned char *used;
8933 unsigned char *keep, last, some_unused;
8935 if (!is_ppc64_elf (ibfd))
8938 toc = bfd_get_section_by_name (ibfd, ".toc");
8941 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8942 || discarded_section (toc))
8947 symtab_hdr = &elf_symtab_hdr (ibfd);
8949 /* Look at sections dropped from the final link. */
8952 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8954 if (sec->reloc_count == 0
8955 || !discarded_section (sec)
8956 || get_opd_info (sec)
8957 || (sec->flags & SEC_ALLOC) == 0
8958 || (sec->flags & SEC_DEBUGGING) != 0)
8961 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8962 if (relstart == NULL)
8965 /* Run through the relocs to see which toc entries might be
8967 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8969 enum elf_ppc64_reloc_type r_type;
8970 unsigned long r_symndx;
8972 struct elf_link_hash_entry *h;
8973 Elf_Internal_Sym *sym;
8976 r_type = ELF64_R_TYPE (rel->r_info);
8983 case R_PPC64_TOC16_LO:
8984 case R_PPC64_TOC16_HI:
8985 case R_PPC64_TOC16_HA:
8986 case R_PPC64_TOC16_DS:
8987 case R_PPC64_TOC16_LO_DS:
8991 r_symndx = ELF64_R_SYM (rel->r_info);
8992 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9000 val = h->root.u.def.value;
9002 val = sym->st_value;
9003 val += rel->r_addend;
9005 if (val >= toc->size)
9008 /* Anything in the toc ought to be aligned to 8 bytes.
9009 If not, don't mark as unused. */
9015 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9020 skip[val >> 3] = ref_from_discarded;
9023 if (elf_section_data (sec)->relocs != relstart)
9027 /* For largetoc loads of address constants, we can convert
9028 . addis rx,2,addr@got@ha
9029 . ld ry,addr@got@l(rx)
9031 . addis rx,2,addr@toc@ha
9032 . addi ry,rx,addr@toc@l
9033 when addr is within 2G of the toc pointer. This then means
9034 that the word storing "addr" in the toc is no longer needed. */
9036 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
9037 && toc->output_section->rawsize < (bfd_vma) 1 << 31
9038 && toc->reloc_count != 0)
9040 /* Read toc relocs. */
9041 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9043 if (toc_relocs == NULL)
9046 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9048 enum elf_ppc64_reloc_type r_type;
9049 unsigned long r_symndx;
9051 struct elf_link_hash_entry *h;
9052 Elf_Internal_Sym *sym;
9055 r_type = ELF64_R_TYPE (rel->r_info);
9056 if (r_type != R_PPC64_ADDR64)
9059 r_symndx = ELF64_R_SYM (rel->r_info);
9060 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9065 || sym_sec->output_section == NULL
9066 || discarded_section (sym_sec))
9069 if (!SYMBOL_REFERENCES_LOCAL (info, h))
9074 if (h->type == STT_GNU_IFUNC)
9076 val = h->root.u.def.value;
9080 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9082 val = sym->st_value;
9084 val += rel->r_addend;
9085 val += sym_sec->output_section->vma + sym_sec->output_offset;
9087 /* We don't yet know the exact toc pointer value, but we
9088 know it will be somewhere in the toc section. Don't
9089 optimize if the difference from any possible toc
9090 pointer is outside [ff..f80008000, 7fff7fff]. */
9091 addr = toc->output_section->vma + TOC_BASE_OFF;
9092 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9095 addr = toc->output_section->vma + toc->output_section->rawsize;
9096 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9101 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9106 skip[rel->r_offset >> 3]
9107 |= can_optimize | ((rel - toc_relocs) << 2);
9114 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9118 if (local_syms != NULL
9119 && symtab_hdr->contents != (unsigned char *) local_syms)
9123 && elf_section_data (sec)->relocs != relstart)
9125 if (toc_relocs != NULL
9126 && elf_section_data (toc)->relocs != toc_relocs)
9133 /* Now check all kept sections that might reference the toc.
9134 Check the toc itself last. */
9135 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9138 sec = (sec == toc ? NULL
9139 : sec->next == NULL ? toc
9140 : sec->next == toc && toc->next ? toc->next
9145 if (sec->reloc_count == 0
9146 || discarded_section (sec)
9147 || get_opd_info (sec)
9148 || (sec->flags & SEC_ALLOC) == 0
9149 || (sec->flags & SEC_DEBUGGING) != 0)
9152 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9154 if (relstart == NULL)
9160 /* Mark toc entries referenced as used. */
9164 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9166 enum elf_ppc64_reloc_type r_type;
9167 unsigned long r_symndx;
9169 struct elf_link_hash_entry *h;
9170 Elf_Internal_Sym *sym;
9172 enum {no_check, check_lo, check_ha} insn_check;
9174 r_type = ELF64_R_TYPE (rel->r_info);
9178 insn_check = no_check;
9181 case R_PPC64_GOT_TLSLD16_HA:
9182 case R_PPC64_GOT_TLSGD16_HA:
9183 case R_PPC64_GOT_TPREL16_HA:
9184 case R_PPC64_GOT_DTPREL16_HA:
9185 case R_PPC64_GOT16_HA:
9186 case R_PPC64_TOC16_HA:
9187 insn_check = check_ha;
9190 case R_PPC64_GOT_TLSLD16_LO:
9191 case R_PPC64_GOT_TLSGD16_LO:
9192 case R_PPC64_GOT_TPREL16_LO_DS:
9193 case R_PPC64_GOT_DTPREL16_LO_DS:
9194 case R_PPC64_GOT16_LO:
9195 case R_PPC64_GOT16_LO_DS:
9196 case R_PPC64_TOC16_LO:
9197 case R_PPC64_TOC16_LO_DS:
9198 insn_check = check_lo;
9202 if (insn_check != no_check)
9204 bfd_vma off = rel->r_offset & ~3;
9205 unsigned char buf[4];
9208 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9213 insn = bfd_get_32 (ibfd, buf);
9214 if (insn_check == check_lo
9215 ? !ok_lo_toc_insn (insn)
9216 : ((insn & ((0x3f << 26) | 0x1f << 16))
9217 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9221 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9222 sprintf (str, "%#08x", insn);
9223 info->callbacks->einfo
9224 /* xgettext:c-format */
9225 (_("%P: %H: toc optimization is not supported for"
9226 " %s instruction.\n"),
9227 ibfd, sec, rel->r_offset & ~3, str);
9234 case R_PPC64_TOC16_LO:
9235 case R_PPC64_TOC16_HI:
9236 case R_PPC64_TOC16_HA:
9237 case R_PPC64_TOC16_DS:
9238 case R_PPC64_TOC16_LO_DS:
9239 /* In case we're taking addresses of toc entries. */
9240 case R_PPC64_ADDR64:
9247 r_symndx = ELF64_R_SYM (rel->r_info);
9248 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9259 val = h->root.u.def.value;
9261 val = sym->st_value;
9262 val += rel->r_addend;
9264 if (val >= toc->size)
9267 if ((skip[val >> 3] & can_optimize) != 0)
9274 case R_PPC64_TOC16_HA:
9277 case R_PPC64_TOC16_LO_DS:
9278 off = rel->r_offset;
9279 off += (bfd_big_endian (ibfd) ? -2 : 3);
9280 if (!bfd_get_section_contents (ibfd, sec, &opc,
9286 if ((opc & (0x3f << 2)) == (58u << 2))
9291 /* Wrong sort of reloc, or not a ld. We may
9292 as well clear ref_from_discarded too. */
9299 /* For the toc section, we only mark as used if this
9300 entry itself isn't unused. */
9301 else if ((used[rel->r_offset >> 3]
9302 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9305 /* Do all the relocs again, to catch reference
9314 if (elf_section_data (sec)->relocs != relstart)
9318 /* Merge the used and skip arrays. Assume that TOC
9319 doublewords not appearing as either used or unused belong
9320 to to an entry more than one doubleword in size. */
9321 for (drop = skip, keep = used, last = 0, some_unused = 0;
9322 drop < skip + (toc->size + 7) / 8;
9327 *drop &= ~ref_from_discarded;
9328 if ((*drop & can_optimize) != 0)
9332 else if ((*drop & ref_from_discarded) != 0)
9335 last = ref_from_discarded;
9345 bfd_byte *contents, *src;
9347 Elf_Internal_Sym *sym;
9348 bfd_boolean local_toc_syms = FALSE;
9350 /* Shuffle the toc contents, and at the same time convert the
9351 skip array from booleans into offsets. */
9352 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9355 elf_section_data (toc)->this_hdr.contents = contents;
9357 for (src = contents, off = 0, drop = skip;
9358 src < contents + toc->size;
9361 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9366 memcpy (src - off, src, 8);
9370 toc->rawsize = toc->size;
9371 toc->size = src - contents - off;
9373 /* Adjust addends for relocs against the toc section sym,
9374 and optimize any accesses we can. */
9375 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9377 if (sec->reloc_count == 0
9378 || discarded_section (sec))
9381 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9383 if (relstart == NULL)
9386 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9388 enum elf_ppc64_reloc_type r_type;
9389 unsigned long r_symndx;
9391 struct elf_link_hash_entry *h;
9394 r_type = ELF64_R_TYPE (rel->r_info);
9401 case R_PPC64_TOC16_LO:
9402 case R_PPC64_TOC16_HI:
9403 case R_PPC64_TOC16_HA:
9404 case R_PPC64_TOC16_DS:
9405 case R_PPC64_TOC16_LO_DS:
9406 case R_PPC64_ADDR64:
9410 r_symndx = ELF64_R_SYM (rel->r_info);
9411 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9419 val = h->root.u.def.value;
9422 val = sym->st_value;
9424 local_toc_syms = TRUE;
9427 val += rel->r_addend;
9429 if (val > toc->rawsize)
9431 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9433 else if ((skip[val >> 3] & can_optimize) != 0)
9435 Elf_Internal_Rela *tocrel
9436 = toc_relocs + (skip[val >> 3] >> 2);
9437 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9441 case R_PPC64_TOC16_HA:
9442 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9445 case R_PPC64_TOC16_LO_DS:
9446 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9450 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9452 info->callbacks->einfo
9453 /* xgettext:c-format */
9454 (_("%P: %H: %s references "
9455 "optimized away TOC entry\n"),
9456 ibfd, sec, rel->r_offset,
9457 ppc64_elf_howto_table[r_type]->name);
9458 bfd_set_error (bfd_error_bad_value);
9461 rel->r_addend = tocrel->r_addend;
9462 elf_section_data (sec)->relocs = relstart;
9466 if (h != NULL || sym->st_value != 0)
9469 rel->r_addend -= skip[val >> 3];
9470 elf_section_data (sec)->relocs = relstart;
9473 if (elf_section_data (sec)->relocs != relstart)
9477 /* We shouldn't have local or global symbols defined in the TOC,
9478 but handle them anyway. */
9479 if (local_syms != NULL)
9480 for (sym = local_syms;
9481 sym < local_syms + symtab_hdr->sh_info;
9483 if (sym->st_value != 0
9484 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9488 if (sym->st_value > toc->rawsize)
9489 i = toc->rawsize >> 3;
9491 i = sym->st_value >> 3;
9493 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9497 (_("%s defined on removed toc entry"),
9498 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9501 while ((skip[i] & (ref_from_discarded | can_optimize)));
9502 sym->st_value = (bfd_vma) i << 3;
9505 sym->st_value -= skip[i];
9506 symtab_hdr->contents = (unsigned char *) local_syms;
9509 /* Adjust any global syms defined in this toc input section. */
9510 if (toc_inf.global_toc_syms)
9513 toc_inf.skip = skip;
9514 toc_inf.global_toc_syms = FALSE;
9515 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9519 if (toc->reloc_count != 0)
9521 Elf_Internal_Shdr *rel_hdr;
9522 Elf_Internal_Rela *wrel;
9525 /* Remove unused toc relocs, and adjust those we keep. */
9526 if (toc_relocs == NULL)
9527 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9529 if (toc_relocs == NULL)
9533 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9534 if ((skip[rel->r_offset >> 3]
9535 & (ref_from_discarded | can_optimize)) == 0)
9537 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9538 wrel->r_info = rel->r_info;
9539 wrel->r_addend = rel->r_addend;
9542 else if (!dec_dynrel_count (rel->r_info, toc, info,
9543 &local_syms, NULL, NULL))
9546 elf_section_data (toc)->relocs = toc_relocs;
9547 toc->reloc_count = wrel - toc_relocs;
9548 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9549 sz = rel_hdr->sh_entsize;
9550 rel_hdr->sh_size = toc->reloc_count * sz;
9553 else if (toc_relocs != NULL
9554 && elf_section_data (toc)->relocs != toc_relocs)
9557 if (local_syms != NULL
9558 && symtab_hdr->contents != (unsigned char *) local_syms)
9560 if (!info->keep_memory)
9563 symtab_hdr->contents = (unsigned char *) local_syms;
9571 /* Return true iff input section I references the TOC using
9572 instructions limited to +/-32k offsets. */
9575 ppc64_elf_has_small_toc_reloc (asection *i)
9577 return (is_ppc64_elf (i->owner)
9578 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9581 /* Allocate space for one GOT entry. */
9584 allocate_got (struct elf_link_hash_entry *h,
9585 struct bfd_link_info *info,
9586 struct got_entry *gent)
9588 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9590 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9591 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9593 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9594 ? 2 : 1) * sizeof (Elf64_External_Rela);
9595 asection *got = ppc64_elf_tdata (gent->owner)->got;
9597 gent->got.offset = got->size;
9598 got->size += entsize;
9600 dyn = htab->elf.dynamic_sections_created;
9601 if (h->type == STT_GNU_IFUNC)
9603 htab->elf.irelplt->size += rentsize;
9604 htab->got_reli_size += rentsize;
9606 else if ((bfd_link_pic (info)
9607 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9608 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9609 || h->root.type != bfd_link_hash_undefweak))
9611 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9612 relgot->size += rentsize;
9616 /* This function merges got entries in the same toc group. */
9619 merge_got_entries (struct got_entry **pent)
9621 struct got_entry *ent, *ent2;
9623 for (ent = *pent; ent != NULL; ent = ent->next)
9624 if (!ent->is_indirect)
9625 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9626 if (!ent2->is_indirect
9627 && ent2->addend == ent->addend
9628 && ent2->tls_type == ent->tls_type
9629 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9631 ent2->is_indirect = TRUE;
9632 ent2->got.ent = ent;
9636 /* Allocate space in .plt, .got and associated reloc sections for
9640 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9642 struct bfd_link_info *info;
9643 struct ppc_link_hash_table *htab;
9645 struct ppc_link_hash_entry *eh;
9646 struct got_entry **pgent, *gent;
9648 if (h->root.type == bfd_link_hash_indirect)
9651 info = (struct bfd_link_info *) inf;
9652 htab = ppc_hash_table (info);
9656 eh = (struct ppc_link_hash_entry *) h;
9657 /* Run through the TLS GD got entries first if we're changing them
9659 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9660 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9661 if (gent->got.refcount > 0
9662 && (gent->tls_type & TLS_GD) != 0)
9664 /* This was a GD entry that has been converted to TPREL. If
9665 there happens to be a TPREL entry we can use that one. */
9666 struct got_entry *ent;
9667 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9668 if (ent->got.refcount > 0
9669 && (ent->tls_type & TLS_TPREL) != 0
9670 && ent->addend == gent->addend
9671 && ent->owner == gent->owner)
9673 gent->got.refcount = 0;
9677 /* If not, then we'll be using our own TPREL entry. */
9678 if (gent->got.refcount != 0)
9679 gent->tls_type = TLS_TLS | TLS_TPREL;
9682 /* Remove any list entry that won't generate a word in the GOT before
9683 we call merge_got_entries. Otherwise we risk merging to empty
9685 pgent = &h->got.glist;
9686 while ((gent = *pgent) != NULL)
9687 if (gent->got.refcount > 0)
9689 if ((gent->tls_type & TLS_LD) != 0
9692 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9693 *pgent = gent->next;
9696 pgent = &gent->next;
9699 *pgent = gent->next;
9701 if (!htab->do_multi_toc)
9702 merge_got_entries (&h->got.glist);
9704 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9705 if (!gent->is_indirect)
9707 /* Make sure this symbol is output as a dynamic symbol.
9708 Undefined weak syms won't yet be marked as dynamic,
9709 nor will all TLS symbols. */
9710 if (h->dynindx == -1
9712 && h->type != STT_GNU_IFUNC
9713 && htab->elf.dynamic_sections_created)
9715 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9719 if (!is_ppc64_elf (gent->owner))
9722 allocate_got (h, info, gent);
9725 if (!htab->elf.dynamic_sections_created
9726 && h->type != STT_GNU_IFUNC)
9727 eh->dyn_relocs = NULL;
9729 if (eh->dyn_relocs != NULL)
9731 struct elf_dyn_relocs *p, **pp;
9733 /* In the shared -Bsymbolic case, discard space allocated for
9734 dynamic pc-relative relocs against symbols which turn out to
9735 be defined in regular objects. For the normal shared case,
9736 discard space for relocs that have become local due to symbol
9737 visibility changes. */
9739 if (bfd_link_pic (info))
9741 /* Relocs that use pc_count are those that appear on a call
9742 insn, or certain REL relocs (see must_be_dyn_reloc) that
9743 can be generated via assembly. We want calls to
9744 protected symbols to resolve directly to the function
9745 rather than going via the plt. If people want function
9746 pointer comparisons to work as expected then they should
9747 avoid writing weird assembly. */
9748 if (SYMBOL_CALLS_LOCAL (info, h))
9750 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9752 p->count -= p->pc_count;
9761 /* Also discard relocs on undefined weak syms with
9762 non-default visibility. */
9763 if (eh->dyn_relocs != NULL
9764 && h->root.type == bfd_link_hash_undefweak)
9766 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9767 eh->dyn_relocs = NULL;
9769 /* Make sure this symbol is output as a dynamic symbol.
9770 Undefined weak syms won't yet be marked as dynamic. */
9771 else if (h->dynindx == -1
9772 && !h->forced_local)
9774 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9779 else if (h->type == STT_GNU_IFUNC)
9781 /* A plt entry is always created when making direct calls to
9782 an ifunc, even when building a static executable, but
9783 that doesn't cover all cases. We may have only an ifunc
9784 initialised function pointer for a given ifunc symbol.
9786 For ELFv2, dynamic relocations are not required when
9787 generating a global entry PLT stub. */
9788 if (abiversion (info->output_bfd) >= 2)
9790 if (global_entry_stub (h))
9791 eh->dyn_relocs = NULL;
9794 /* For ELFv1 we have function descriptors. Descriptors need
9795 to be treated like PLT entries and thus have dynamic
9796 relocations. One exception is when the function
9797 descriptor is copied into .dynbss (which should only
9798 happen with ancient versions of gcc). */
9799 else if (h->needs_copy)
9800 eh->dyn_relocs = NULL;
9802 else if (ELIMINATE_COPY_RELOCS)
9804 /* For the non-pic case, discard space for relocs against
9805 symbols which turn out to need copy relocs or are not
9808 /* First make sure this symbol is output as a dynamic symbol.
9809 Undefined weak syms won't yet be marked as dynamic. */
9810 if (h->root.type == bfd_link_hash_undefweak
9815 && !bfd_elf_link_record_dynamic_symbol (info, h))
9820 || h->dynindx == -1)
9821 eh->dyn_relocs = NULL;
9824 /* Finally, allocate space. */
9825 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9827 asection *sreloc = elf_section_data (p->sec)->sreloc;
9828 if (eh->elf.type == STT_GNU_IFUNC)
9829 sreloc = htab->elf.irelplt;
9830 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9834 if ((htab->elf.dynamic_sections_created
9836 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
9837 || h->type == STT_GNU_IFUNC)
9839 struct plt_entry *pent;
9840 bfd_boolean doneone = FALSE;
9841 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9842 if (pent->plt.refcount > 0)
9844 if (!htab->elf.dynamic_sections_created
9845 || h->dynindx == -1)
9848 pent->plt.offset = s->size;
9849 s->size += PLT_ENTRY_SIZE (htab);
9850 s = htab->elf.irelplt;
9854 /* If this is the first .plt entry, make room for the special
9858 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9860 pent->plt.offset = s->size;
9862 /* Make room for this entry. */
9863 s->size += PLT_ENTRY_SIZE (htab);
9865 /* Make room for the .glink code. */
9868 s->size += GLINK_CALL_STUB_SIZE;
9871 /* We need bigger stubs past index 32767. */
9872 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9879 /* We also need to make an entry in the .rela.plt section. */
9880 s = htab->elf.srelplt;
9882 s->size += sizeof (Elf64_External_Rela);
9886 pent->plt.offset = (bfd_vma) -1;
9889 h->plt.plist = NULL;
9895 h->plt.plist = NULL;
9902 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9903 to set up space for global entry stubs. These are put in glink,
9904 after the branch table. */
9907 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9909 struct bfd_link_info *info;
9910 struct ppc_link_hash_table *htab;
9911 struct plt_entry *pent;
9914 if (h->root.type == bfd_link_hash_indirect)
9917 if (!h->pointer_equality_needed)
9924 htab = ppc_hash_table (info);
9929 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9930 if (pent->plt.offset != (bfd_vma) -1
9931 && pent->addend == 0)
9933 /* For ELFv2, if this symbol is not defined in a regular file
9934 and we are not generating a shared library or pie, then we
9935 need to define the symbol in the executable on a call stub.
9936 This is to avoid text relocations. */
9937 s->size = (s->size + 15) & -16;
9938 h->root.type = bfd_link_hash_defined;
9939 h->root.u.def.section = s;
9940 h->root.u.def.value = s->size;
9947 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9948 read-only sections. */
9951 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9953 if (h->root.type == bfd_link_hash_indirect)
9956 if (readonly_dynrelocs (h))
9958 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9960 /* Not an error, just cut short the traversal. */
9966 /* Set the sizes of the dynamic sections. */
9969 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9970 struct bfd_link_info *info)
9972 struct ppc_link_hash_table *htab;
9977 struct got_entry *first_tlsld;
9979 htab = ppc_hash_table (info);
9983 dynobj = htab->elf.dynobj;
9987 if (htab->elf.dynamic_sections_created)
9989 /* Set the contents of the .interp section to the interpreter. */
9990 if (bfd_link_executable (info) && !info->nointerp)
9992 s = bfd_get_linker_section (dynobj, ".interp");
9995 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9996 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10000 /* Set up .got offsets for local syms, and space for local dynamic
10002 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10004 struct got_entry **lgot_ents;
10005 struct got_entry **end_lgot_ents;
10006 struct plt_entry **local_plt;
10007 struct plt_entry **end_local_plt;
10008 unsigned char *lgot_masks;
10009 bfd_size_type locsymcount;
10010 Elf_Internal_Shdr *symtab_hdr;
10012 if (!is_ppc64_elf (ibfd))
10015 for (s = ibfd->sections; s != NULL; s = s->next)
10017 struct ppc_dyn_relocs *p;
10019 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10021 if (!bfd_is_abs_section (p->sec)
10022 && bfd_is_abs_section (p->sec->output_section))
10024 /* Input section has been discarded, either because
10025 it is a copy of a linkonce section or due to
10026 linker script /DISCARD/, so we'll be discarding
10029 else if (p->count != 0)
10031 asection *srel = elf_section_data (p->sec)->sreloc;
10033 srel = htab->elf.irelplt;
10034 srel->size += p->count * sizeof (Elf64_External_Rela);
10035 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
10036 info->flags |= DF_TEXTREL;
10041 lgot_ents = elf_local_got_ents (ibfd);
10045 symtab_hdr = &elf_symtab_hdr (ibfd);
10046 locsymcount = symtab_hdr->sh_info;
10047 end_lgot_ents = lgot_ents + locsymcount;
10048 local_plt = (struct plt_entry **) end_lgot_ents;
10049 end_local_plt = local_plt + locsymcount;
10050 lgot_masks = (unsigned char *) end_local_plt;
10051 s = ppc64_elf_tdata (ibfd)->got;
10052 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10054 struct got_entry **pent, *ent;
10057 while ((ent = *pent) != NULL)
10058 if (ent->got.refcount > 0)
10060 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
10062 ppc64_tlsld_got (ibfd)->got.refcount += 1;
10067 unsigned int ent_size = 8;
10068 unsigned int rel_size = sizeof (Elf64_External_Rela);
10070 ent->got.offset = s->size;
10071 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10076 s->size += ent_size;
10077 if ((*lgot_masks & PLT_IFUNC) != 0)
10079 htab->elf.irelplt->size += rel_size;
10080 htab->got_reli_size += rel_size;
10082 else if (bfd_link_pic (info))
10084 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10085 srel->size += rel_size;
10094 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10095 for (; local_plt < end_local_plt; ++local_plt)
10097 struct plt_entry *ent;
10099 for (ent = *local_plt; ent != NULL; ent = ent->next)
10100 if (ent->plt.refcount > 0)
10102 s = htab->elf.iplt;
10103 ent->plt.offset = s->size;
10104 s->size += PLT_ENTRY_SIZE (htab);
10106 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10109 ent->plt.offset = (bfd_vma) -1;
10113 /* Allocate global sym .plt and .got entries, and space for global
10114 sym dynamic relocs. */
10115 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10116 /* Stash the end of glink branch table. */
10117 if (htab->glink != NULL)
10118 htab->glink->rawsize = htab->glink->size;
10120 if (!htab->opd_abi && !bfd_link_pic (info))
10121 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10123 first_tlsld = NULL;
10124 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10126 struct got_entry *ent;
10128 if (!is_ppc64_elf (ibfd))
10131 ent = ppc64_tlsld_got (ibfd);
10132 if (ent->got.refcount > 0)
10134 if (!htab->do_multi_toc && first_tlsld != NULL)
10136 ent->is_indirect = TRUE;
10137 ent->got.ent = first_tlsld;
10141 if (first_tlsld == NULL)
10143 s = ppc64_elf_tdata (ibfd)->got;
10144 ent->got.offset = s->size;
10147 if (bfd_link_pic (info))
10149 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10150 srel->size += sizeof (Elf64_External_Rela);
10155 ent->got.offset = (bfd_vma) -1;
10158 /* We now have determined the sizes of the various dynamic sections.
10159 Allocate memory for them. */
10161 for (s = dynobj->sections; s != NULL; s = s->next)
10163 if ((s->flags & SEC_LINKER_CREATED) == 0)
10166 if (s == htab->brlt || s == htab->relbrlt)
10167 /* These haven't been allocated yet; don't strip. */
10169 else if (s == htab->elf.sgot
10170 || s == htab->elf.splt
10171 || s == htab->elf.iplt
10172 || s == htab->glink
10173 || s == htab->dynbss)
10175 /* Strip this section if we don't need it; see the
10178 else if (s == htab->glink_eh_frame)
10180 if (!bfd_is_abs_section (s->output_section))
10181 /* Not sized yet. */
10184 else if (CONST_STRNEQ (s->name, ".rela"))
10188 if (s != htab->elf.srelplt)
10191 /* We use the reloc_count field as a counter if we need
10192 to copy relocs into the output file. */
10193 s->reloc_count = 0;
10198 /* It's not one of our sections, so don't allocate space. */
10204 /* If we don't need this section, strip it from the
10205 output file. This is mostly to handle .rela.bss and
10206 .rela.plt. We must create both sections in
10207 create_dynamic_sections, because they must be created
10208 before the linker maps input sections to output
10209 sections. The linker does that before
10210 adjust_dynamic_symbol is called, and it is that
10211 function which decides whether anything needs to go
10212 into these sections. */
10213 s->flags |= SEC_EXCLUDE;
10217 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10220 /* Allocate memory for the section contents. We use bfd_zalloc
10221 here in case unused entries are not reclaimed before the
10222 section's contents are written out. This should not happen,
10223 but this way if it does we get a R_PPC64_NONE reloc in .rela
10224 sections instead of garbage.
10225 We also rely on the section contents being zero when writing
10227 s->contents = bfd_zalloc (dynobj, s->size);
10228 if (s->contents == NULL)
10232 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10234 if (!is_ppc64_elf (ibfd))
10237 s = ppc64_elf_tdata (ibfd)->got;
10238 if (s != NULL && s != htab->elf.sgot)
10241 s->flags |= SEC_EXCLUDE;
10244 s->contents = bfd_zalloc (ibfd, s->size);
10245 if (s->contents == NULL)
10249 s = ppc64_elf_tdata (ibfd)->relgot;
10253 s->flags |= SEC_EXCLUDE;
10256 s->contents = bfd_zalloc (ibfd, s->size);
10257 if (s->contents == NULL)
10260 s->reloc_count = 0;
10265 if (htab->elf.dynamic_sections_created)
10267 bfd_boolean tls_opt;
10269 /* Add some entries to the .dynamic section. We fill in the
10270 values later, in ppc64_elf_finish_dynamic_sections, but we
10271 must add the entries now so that we get the correct size for
10272 the .dynamic section. The DT_DEBUG entry is filled in by the
10273 dynamic linker and used by the debugger. */
10274 #define add_dynamic_entry(TAG, VAL) \
10275 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10277 if (bfd_link_executable (info))
10279 if (!add_dynamic_entry (DT_DEBUG, 0))
10283 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10285 if (!add_dynamic_entry (DT_PLTGOT, 0)
10286 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10287 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10288 || !add_dynamic_entry (DT_JMPREL, 0)
10289 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10293 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10295 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10296 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10300 tls_opt = (htab->params->tls_get_addr_opt
10301 && htab->tls_get_addr_fd != NULL
10302 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10303 if (tls_opt || !htab->opd_abi)
10305 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10311 if (!add_dynamic_entry (DT_RELA, 0)
10312 || !add_dynamic_entry (DT_RELASZ, 0)
10313 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10316 /* If any dynamic relocs apply to a read-only section,
10317 then we need a DT_TEXTREL entry. */
10318 if ((info->flags & DF_TEXTREL) == 0)
10319 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10321 if ((info->flags & DF_TEXTREL) != 0)
10323 if (!add_dynamic_entry (DT_TEXTREL, 0))
10328 #undef add_dynamic_entry
10333 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10336 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10338 if (h->plt.plist != NULL
10340 && !h->pointer_equality_needed)
10343 return _bfd_elf_hash_symbol (h);
10346 /* Determine the type of stub needed, if any, for a call. */
10348 static inline enum ppc_stub_type
10349 ppc_type_of_stub (asection *input_sec,
10350 const Elf_Internal_Rela *rel,
10351 struct ppc_link_hash_entry **hash,
10352 struct plt_entry **plt_ent,
10353 bfd_vma destination,
10354 unsigned long local_off)
10356 struct ppc_link_hash_entry *h = *hash;
10358 bfd_vma branch_offset;
10359 bfd_vma max_branch_offset;
10360 enum elf_ppc64_reloc_type r_type;
10364 struct plt_entry *ent;
10365 struct ppc_link_hash_entry *fdh = h;
10367 && h->oh->is_func_descriptor)
10369 fdh = ppc_follow_link (h->oh);
10373 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10374 if (ent->addend == rel->r_addend
10375 && ent->plt.offset != (bfd_vma) -1)
10378 return ppc_stub_plt_call;
10381 /* Here, we know we don't have a plt entry. If we don't have a
10382 either a defined function descriptor or a defined entry symbol
10383 in a regular object file, then it is pointless trying to make
10384 any other type of stub. */
10385 if (!is_static_defined (&fdh->elf)
10386 && !is_static_defined (&h->elf))
10387 return ppc_stub_none;
10389 else if (elf_local_got_ents (input_sec->owner) != NULL)
10391 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10392 struct plt_entry **local_plt = (struct plt_entry **)
10393 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10394 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10396 if (local_plt[r_symndx] != NULL)
10398 struct plt_entry *ent;
10400 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10401 if (ent->addend == rel->r_addend
10402 && ent->plt.offset != (bfd_vma) -1)
10405 return ppc_stub_plt_call;
10410 /* Determine where the call point is. */
10411 location = (input_sec->output_offset
10412 + input_sec->output_section->vma
10415 branch_offset = destination - location;
10416 r_type = ELF64_R_TYPE (rel->r_info);
10418 /* Determine if a long branch stub is needed. */
10419 max_branch_offset = 1 << 25;
10420 if (r_type != R_PPC64_REL24)
10421 max_branch_offset = 1 << 15;
10423 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10424 /* We need a stub. Figure out whether a long_branch or plt_branch
10425 is needed later. */
10426 return ppc_stub_long_branch;
10428 return ppc_stub_none;
10431 /* With power7 weakly ordered memory model, it is possible for ld.so
10432 to update a plt entry in one thread and have another thread see a
10433 stale zero toc entry. To avoid this we need some sort of acquire
10434 barrier in the call stub. One solution is to make the load of the
10435 toc word seem to appear to depend on the load of the function entry
10436 word. Another solution is to test for r2 being zero, and branch to
10437 the appropriate glink entry if so.
10439 . fake dep barrier compare
10440 . ld 12,xxx(2) ld 12,xxx(2)
10441 . mtctr 12 mtctr 12
10442 . xor 11,12,12 ld 2,xxx+8(2)
10443 . add 2,2,11 cmpldi 2,0
10444 . ld 2,xxx+8(2) bnectr+
10445 . bctr b <glink_entry>
10447 The solution involving the compare turns out to be faster, so
10448 that's what we use unless the branch won't reach. */
10450 #define ALWAYS_USE_FAKE_DEP 0
10451 #define ALWAYS_EMIT_R2SAVE 0
10453 #define PPC_LO(v) ((v) & 0xffff)
10454 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10455 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10457 static inline unsigned int
10458 plt_stub_size (struct ppc_link_hash_table *htab,
10459 struct ppc_stub_hash_entry *stub_entry,
10462 unsigned size = 12;
10464 if (ALWAYS_EMIT_R2SAVE
10465 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10467 if (PPC_HA (off) != 0)
10472 if (htab->params->plt_static_chain)
10474 if (htab->params->plt_thread_safe
10475 && htab->elf.dynamic_sections_created
10476 && stub_entry->h != NULL
10477 && stub_entry->h->elf.dynindx != -1)
10479 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10482 if (stub_entry->h != NULL
10483 && (stub_entry->h == htab->tls_get_addr_fd
10484 || stub_entry->h == htab->tls_get_addr)
10485 && htab->params->tls_get_addr_opt)
10490 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10491 then return the padding needed to do so. */
10492 static inline unsigned int
10493 plt_stub_pad (struct ppc_link_hash_table *htab,
10494 struct ppc_stub_hash_entry *stub_entry,
10497 int stub_align = 1 << htab->params->plt_stub_align;
10498 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10499 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10501 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10502 > ((stub_size - 1) & -stub_align))
10503 return stub_align - (stub_off & (stub_align - 1));
10507 /* Build a .plt call stub. */
10509 static inline bfd_byte *
10510 build_plt_stub (struct ppc_link_hash_table *htab,
10511 struct ppc_stub_hash_entry *stub_entry,
10512 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10514 bfd *obfd = htab->params->stub_bfd;
10515 bfd_boolean plt_load_toc = htab->opd_abi;
10516 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10517 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10518 && htab->elf.dynamic_sections_created
10519 && stub_entry->h != NULL
10520 && stub_entry->h->elf.dynindx != -1);
10521 bfd_boolean use_fake_dep = plt_thread_safe;
10522 bfd_vma cmp_branch_off = 0;
10524 if (!ALWAYS_USE_FAKE_DEP
10527 && !((stub_entry->h == htab->tls_get_addr_fd
10528 || stub_entry->h == htab->tls_get_addr)
10529 && htab->params->tls_get_addr_opt))
10531 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10532 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10533 / PLT_ENTRY_SIZE (htab));
10534 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10537 if (pltindex > 32768)
10538 glinkoff += (pltindex - 32768) * 4;
10540 + htab->glink->output_offset
10541 + htab->glink->output_section->vma);
10542 from = (p - stub_entry->group->stub_sec->contents
10543 + 4 * (ALWAYS_EMIT_R2SAVE
10544 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10545 + 4 * (PPC_HA (offset) != 0)
10546 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10547 != PPC_HA (offset))
10548 + 4 * (plt_static_chain != 0)
10550 + stub_entry->group->stub_sec->output_offset
10551 + stub_entry->group->stub_sec->output_section->vma);
10552 cmp_branch_off = to - from;
10553 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10556 if (PPC_HA (offset) != 0)
10560 if (ALWAYS_EMIT_R2SAVE
10561 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10562 r[0].r_offset += 4;
10563 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10564 r[1].r_offset = r[0].r_offset + 4;
10565 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10566 r[1].r_addend = r[0].r_addend;
10569 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10571 r[2].r_offset = r[1].r_offset + 4;
10572 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10573 r[2].r_addend = r[0].r_addend;
10577 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10578 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10579 r[2].r_addend = r[0].r_addend + 8;
10580 if (plt_static_chain)
10582 r[3].r_offset = r[2].r_offset + 4;
10583 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10584 r[3].r_addend = r[0].r_addend + 16;
10589 if (ALWAYS_EMIT_R2SAVE
10590 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10591 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10594 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10595 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10599 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10600 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10603 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10605 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10608 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10613 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10614 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10616 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10617 if (plt_static_chain)
10618 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10625 if (ALWAYS_EMIT_R2SAVE
10626 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10627 r[0].r_offset += 4;
10628 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10631 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10633 r[1].r_offset = r[0].r_offset + 4;
10634 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10635 r[1].r_addend = r[0].r_addend;
10639 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10640 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10641 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10642 if (plt_static_chain)
10644 r[2].r_offset = r[1].r_offset + 4;
10645 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10646 r[2].r_addend = r[0].r_addend + 8;
10651 if (ALWAYS_EMIT_R2SAVE
10652 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10653 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10654 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10656 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10658 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10661 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10666 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10667 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10669 if (plt_static_chain)
10670 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10671 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10674 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10676 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10677 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10678 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10681 bfd_put_32 (obfd, BCTR, p), p += 4;
10685 /* Build a special .plt call stub for __tls_get_addr. */
10687 #define LD_R11_0R3 0xe9630000
10688 #define LD_R12_0R3 0xe9830000
10689 #define MR_R0_R3 0x7c601b78
10690 #define CMPDI_R11_0 0x2c2b0000
10691 #define ADD_R3_R12_R13 0x7c6c6a14
10692 #define BEQLR 0x4d820020
10693 #define MR_R3_R0 0x7c030378
10694 #define STD_R11_0R1 0xf9610000
10695 #define BCTRL 0x4e800421
10696 #define LD_R11_0R1 0xe9610000
10697 #define MTLR_R11 0x7d6803a6
10699 static inline bfd_byte *
10700 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10701 struct ppc_stub_hash_entry *stub_entry,
10702 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10704 bfd *obfd = htab->params->stub_bfd;
10706 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10707 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10708 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10709 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10710 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10711 bfd_put_32 (obfd, BEQLR, p), p += 4;
10712 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10713 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10714 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10717 r[0].r_offset += 9 * 4;
10718 p = build_plt_stub (htab, stub_entry, p, offset, r);
10719 bfd_put_32 (obfd, BCTRL, p - 4);
10721 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10722 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10723 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10724 bfd_put_32 (obfd, BLR, p), p += 4;
10729 static Elf_Internal_Rela *
10730 get_relocs (asection *sec, int count)
10732 Elf_Internal_Rela *relocs;
10733 struct bfd_elf_section_data *elfsec_data;
10735 elfsec_data = elf_section_data (sec);
10736 relocs = elfsec_data->relocs;
10737 if (relocs == NULL)
10739 bfd_size_type relsize;
10740 relsize = sec->reloc_count * sizeof (*relocs);
10741 relocs = bfd_alloc (sec->owner, relsize);
10742 if (relocs == NULL)
10744 elfsec_data->relocs = relocs;
10745 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10746 sizeof (Elf_Internal_Shdr));
10747 if (elfsec_data->rela.hdr == NULL)
10749 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10750 * sizeof (Elf64_External_Rela));
10751 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10752 sec->reloc_count = 0;
10754 relocs += sec->reloc_count;
10755 sec->reloc_count += count;
10760 get_r2off (struct bfd_link_info *info,
10761 struct ppc_stub_hash_entry *stub_entry)
10763 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10764 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10768 /* Support linking -R objects. Get the toc pointer from the
10771 if (!htab->opd_abi)
10773 asection *opd = stub_entry->h->elf.root.u.def.section;
10774 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10776 if (strcmp (opd->name, ".opd") != 0
10777 || opd->reloc_count != 0)
10779 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10780 stub_entry->h->elf.root.root.string);
10781 bfd_set_error (bfd_error_bad_value);
10782 return (bfd_vma) -1;
10784 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10785 return (bfd_vma) -1;
10786 r2off = bfd_get_64 (opd->owner, buf);
10787 r2off -= elf_gp (info->output_bfd);
10789 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10794 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10796 struct ppc_stub_hash_entry *stub_entry;
10797 struct ppc_branch_hash_entry *br_entry;
10798 struct bfd_link_info *info;
10799 struct ppc_link_hash_table *htab;
10804 Elf_Internal_Rela *r;
10807 /* Massage our args to the form they really have. */
10808 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10811 htab = ppc_hash_table (info);
10815 /* Make a note of the offset within the stubs for this entry. */
10816 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10817 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10819 htab->stub_count[stub_entry->stub_type - 1] += 1;
10820 switch (stub_entry->stub_type)
10822 case ppc_stub_long_branch:
10823 case ppc_stub_long_branch_r2off:
10824 /* Branches are relative. This is where we are going to. */
10825 dest = (stub_entry->target_value
10826 + stub_entry->target_section->output_offset
10827 + stub_entry->target_section->output_section->vma);
10828 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10831 /* And this is where we are coming from. */
10832 off -= (stub_entry->stub_offset
10833 + stub_entry->group->stub_sec->output_offset
10834 + stub_entry->group->stub_sec->output_section->vma);
10837 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10839 bfd_vma r2off = get_r2off (info, stub_entry);
10841 if (r2off == (bfd_vma) -1)
10843 htab->stub_error = TRUE;
10846 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10849 if (PPC_HA (r2off) != 0)
10851 bfd_put_32 (htab->params->stub_bfd,
10852 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10856 if (PPC_LO (r2off) != 0)
10858 bfd_put_32 (htab->params->stub_bfd,
10859 ADDI_R2_R2 | PPC_LO (r2off), loc);
10865 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10867 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10869 info->callbacks->einfo
10870 (_("%P: long branch stub `%s' offset overflow\n"),
10871 stub_entry->root.string);
10872 htab->stub_error = TRUE;
10876 if (info->emitrelocations)
10878 r = get_relocs (stub_entry->group->stub_sec, 1);
10881 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10882 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10883 r->r_addend = dest;
10884 if (stub_entry->h != NULL)
10886 struct elf_link_hash_entry **hashes;
10887 unsigned long symndx;
10888 struct ppc_link_hash_entry *h;
10890 hashes = elf_sym_hashes (htab->params->stub_bfd);
10891 if (hashes == NULL)
10893 bfd_size_type hsize;
10895 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10896 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10897 if (hashes == NULL)
10899 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10900 htab->stub_globals = 1;
10902 symndx = htab->stub_globals++;
10904 hashes[symndx] = &h->elf;
10905 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10906 if (h->oh != NULL && h->oh->is_func)
10907 h = ppc_follow_link (h->oh);
10908 if (h->elf.root.u.def.section != stub_entry->target_section)
10909 /* H is an opd symbol. The addend must be zero. */
10913 off = (h->elf.root.u.def.value
10914 + h->elf.root.u.def.section->output_offset
10915 + h->elf.root.u.def.section->output_section->vma);
10916 r->r_addend -= off;
10922 case ppc_stub_plt_branch:
10923 case ppc_stub_plt_branch_r2off:
10924 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10925 stub_entry->root.string + 9,
10927 if (br_entry == NULL)
10929 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10930 stub_entry->root.string);
10931 htab->stub_error = TRUE;
10935 dest = (stub_entry->target_value
10936 + stub_entry->target_section->output_offset
10937 + stub_entry->target_section->output_section->vma);
10938 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10939 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10941 bfd_put_64 (htab->brlt->owner, dest,
10942 htab->brlt->contents + br_entry->offset);
10944 if (br_entry->iter == htab->stub_iteration)
10946 br_entry->iter = 0;
10948 if (htab->relbrlt != NULL)
10950 /* Create a reloc for the branch lookup table entry. */
10951 Elf_Internal_Rela rela;
10954 rela.r_offset = (br_entry->offset
10955 + htab->brlt->output_offset
10956 + htab->brlt->output_section->vma);
10957 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10958 rela.r_addend = dest;
10960 rl = htab->relbrlt->contents;
10961 rl += (htab->relbrlt->reloc_count++
10962 * sizeof (Elf64_External_Rela));
10963 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10965 else if (info->emitrelocations)
10967 r = get_relocs (htab->brlt, 1);
10970 /* brlt, being SEC_LINKER_CREATED does not go through the
10971 normal reloc processing. Symbols and offsets are not
10972 translated from input file to output file form, so
10973 set up the offset per the output file. */
10974 r->r_offset = (br_entry->offset
10975 + htab->brlt->output_offset
10976 + htab->brlt->output_section->vma);
10977 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10978 r->r_addend = dest;
10982 dest = (br_entry->offset
10983 + htab->brlt->output_offset
10984 + htab->brlt->output_section->vma);
10987 - elf_gp (htab->brlt->output_section->owner)
10988 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
10990 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10992 info->callbacks->einfo
10993 (_("%P: linkage table error against `%T'\n"),
10994 stub_entry->root.string);
10995 bfd_set_error (bfd_error_bad_value);
10996 htab->stub_error = TRUE;
11000 if (info->emitrelocations)
11002 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
11005 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11006 if (bfd_big_endian (info->output_bfd))
11007 r[0].r_offset += 2;
11008 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
11009 r[0].r_offset += 4;
11010 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
11011 r[0].r_addend = dest;
11012 if (PPC_HA (off) != 0)
11014 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
11015 r[1].r_offset = r[0].r_offset + 4;
11016 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
11017 r[1].r_addend = r[0].r_addend;
11021 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11023 if (PPC_HA (off) != 0)
11026 bfd_put_32 (htab->params->stub_bfd,
11027 ADDIS_R12_R2 | PPC_HA (off), loc);
11029 bfd_put_32 (htab->params->stub_bfd,
11030 LD_R12_0R12 | PPC_LO (off), loc);
11035 bfd_put_32 (htab->params->stub_bfd,
11036 LD_R12_0R2 | PPC_LO (off), loc);
11041 bfd_vma r2off = get_r2off (info, stub_entry);
11043 if (r2off == (bfd_vma) -1)
11045 htab->stub_error = TRUE;
11049 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
11052 if (PPC_HA (off) != 0)
11055 bfd_put_32 (htab->params->stub_bfd,
11056 ADDIS_R12_R2 | PPC_HA (off), loc);
11058 bfd_put_32 (htab->params->stub_bfd,
11059 LD_R12_0R12 | PPC_LO (off), loc);
11062 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
11064 if (PPC_HA (r2off) != 0)
11068 bfd_put_32 (htab->params->stub_bfd,
11069 ADDIS_R2_R2 | PPC_HA (r2off), loc);
11071 if (PPC_LO (r2off) != 0)
11075 bfd_put_32 (htab->params->stub_bfd,
11076 ADDI_R2_R2 | PPC_LO (r2off), loc);
11080 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
11082 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
11085 case ppc_stub_plt_call:
11086 case ppc_stub_plt_call_r2save:
11087 if (stub_entry->h != NULL
11088 && stub_entry->h->is_func_descriptor
11089 && stub_entry->h->oh != NULL)
11091 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11093 /* If the old-ABI "dot-symbol" is undefined make it weak so
11094 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11095 if (fh->elf.root.type == bfd_link_hash_undefined)
11096 fh->elf.root.type = bfd_link_hash_undefweak;
11097 /* Stop undo_symbol_twiddle changing it back to undefined. */
11098 fh->was_undefined = 0;
11101 /* Now build the stub. */
11102 dest = stub_entry->plt_ent->plt.offset & ~1;
11103 if (dest >= (bfd_vma) -2)
11106 plt = htab->elf.splt;
11107 if (!htab->elf.dynamic_sections_created
11108 || stub_entry->h == NULL
11109 || stub_entry->h->elf.dynindx == -1)
11110 plt = htab->elf.iplt;
11112 dest += plt->output_offset + plt->output_section->vma;
11114 if (stub_entry->h == NULL
11115 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11117 Elf_Internal_Rela rela;
11120 rela.r_offset = dest;
11122 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11124 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11125 rela.r_addend = (stub_entry->target_value
11126 + stub_entry->target_section->output_offset
11127 + stub_entry->target_section->output_section->vma);
11129 rl = (htab->elf.irelplt->contents
11130 + (htab->elf.irelplt->reloc_count++
11131 * sizeof (Elf64_External_Rela)));
11132 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11133 stub_entry->plt_ent->plt.offset |= 1;
11137 - elf_gp (plt->output_section->owner)
11138 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11140 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11142 info->callbacks->einfo
11143 /* xgettext:c-format */
11144 (_("%P: linkage table error against `%T'\n"),
11145 stub_entry->h != NULL
11146 ? stub_entry->h->elf.root.root.string
11148 bfd_set_error (bfd_error_bad_value);
11149 htab->stub_error = TRUE;
11153 if (htab->params->plt_stub_align != 0)
11155 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11157 stub_entry->group->stub_sec->size += pad;
11158 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11163 if (info->emitrelocations)
11165 r = get_relocs (stub_entry->group->stub_sec,
11166 ((PPC_HA (off) != 0)
11168 ? 2 + (htab->params->plt_static_chain
11169 && PPC_HA (off + 16) == PPC_HA (off))
11173 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11174 if (bfd_big_endian (info->output_bfd))
11175 r[0].r_offset += 2;
11176 r[0].r_addend = dest;
11178 if (stub_entry->h != NULL
11179 && (stub_entry->h == htab->tls_get_addr_fd
11180 || stub_entry->h == htab->tls_get_addr)
11181 && htab->params->tls_get_addr_opt)
11182 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11184 p = build_plt_stub (htab, stub_entry, loc, off, r);
11188 case ppc_stub_save_res:
11196 stub_entry->group->stub_sec->size += size;
11198 if (htab->params->emit_stub_syms)
11200 struct elf_link_hash_entry *h;
11203 const char *const stub_str[] = { "long_branch",
11204 "long_branch_r2off",
11206 "plt_branch_r2off",
11210 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11211 len2 = strlen (stub_entry->root.string);
11212 name = bfd_malloc (len1 + len2 + 2);
11215 memcpy (name, stub_entry->root.string, 9);
11216 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11217 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11218 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11221 if (h->root.type == bfd_link_hash_new)
11223 h->root.type = bfd_link_hash_defined;
11224 h->root.u.def.section = stub_entry->group->stub_sec;
11225 h->root.u.def.value = stub_entry->stub_offset;
11226 h->ref_regular = 1;
11227 h->def_regular = 1;
11228 h->ref_regular_nonweak = 1;
11229 h->forced_local = 1;
11231 h->root.linker_def = 1;
11238 /* As above, but don't actually build the stub. Just bump offset so
11239 we know stub section sizes, and select plt_branch stubs where
11240 long_branch stubs won't do. */
11243 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11245 struct ppc_stub_hash_entry *stub_entry;
11246 struct bfd_link_info *info;
11247 struct ppc_link_hash_table *htab;
11251 /* Massage our args to the form they really have. */
11252 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11255 htab = ppc_hash_table (info);
11259 if (stub_entry->h != NULL
11260 && stub_entry->h->save_res
11261 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11262 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11264 /* Don't make stubs to out-of-line register save/restore
11265 functions. Instead, emit copies of the functions. */
11266 stub_entry->group->needs_save_res = 1;
11267 stub_entry->stub_type = ppc_stub_save_res;
11271 if (stub_entry->stub_type == ppc_stub_plt_call
11272 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11275 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11276 if (off >= (bfd_vma) -2)
11278 plt = htab->elf.splt;
11279 if (!htab->elf.dynamic_sections_created
11280 || stub_entry->h == NULL
11281 || stub_entry->h->elf.dynindx == -1)
11282 plt = htab->elf.iplt;
11283 off += (plt->output_offset
11284 + plt->output_section->vma
11285 - elf_gp (plt->output_section->owner)
11286 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11288 size = plt_stub_size (htab, stub_entry, off);
11289 if (htab->params->plt_stub_align)
11290 size += plt_stub_pad (htab, stub_entry, off);
11291 if (info->emitrelocations)
11293 stub_entry->group->stub_sec->reloc_count
11294 += ((PPC_HA (off) != 0)
11296 ? 2 + (htab->params->plt_static_chain
11297 && PPC_HA (off + 16) == PPC_HA (off))
11299 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11304 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11307 bfd_vma local_off = 0;
11309 off = (stub_entry->target_value
11310 + stub_entry->target_section->output_offset
11311 + stub_entry->target_section->output_section->vma);
11312 off -= (stub_entry->group->stub_sec->size
11313 + stub_entry->group->stub_sec->output_offset
11314 + stub_entry->group->stub_sec->output_section->vma);
11316 /* Reset the stub type from the plt variant in case we now
11317 can reach with a shorter stub. */
11318 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11319 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11322 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11324 r2off = get_r2off (info, stub_entry);
11325 if (r2off == (bfd_vma) -1)
11327 htab->stub_error = TRUE;
11331 if (PPC_HA (r2off) != 0)
11333 if (PPC_LO (r2off) != 0)
11338 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11340 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11341 Do the same for -R objects without function descriptors. */
11342 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11343 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11345 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11347 struct ppc_branch_hash_entry *br_entry;
11349 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11350 stub_entry->root.string + 9,
11352 if (br_entry == NULL)
11354 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11355 stub_entry->root.string);
11356 htab->stub_error = TRUE;
11360 if (br_entry->iter != htab->stub_iteration)
11362 br_entry->iter = htab->stub_iteration;
11363 br_entry->offset = htab->brlt->size;
11364 htab->brlt->size += 8;
11366 if (htab->relbrlt != NULL)
11367 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11368 else if (info->emitrelocations)
11370 htab->brlt->reloc_count += 1;
11371 htab->brlt->flags |= SEC_RELOC;
11375 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11376 off = (br_entry->offset
11377 + htab->brlt->output_offset
11378 + htab->brlt->output_section->vma
11379 - elf_gp (htab->brlt->output_section->owner)
11380 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11382 if (info->emitrelocations)
11384 stub_entry->group->stub_sec->reloc_count
11385 += 1 + (PPC_HA (off) != 0);
11386 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11389 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11392 if (PPC_HA (off) != 0)
11398 if (PPC_HA (off) != 0)
11401 if (PPC_HA (r2off) != 0)
11403 if (PPC_LO (r2off) != 0)
11407 else if (info->emitrelocations)
11409 stub_entry->group->stub_sec->reloc_count += 1;
11410 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11414 stub_entry->group->stub_sec->size += size;
11418 /* Set up various things so that we can make a list of input sections
11419 for each output section included in the link. Returns -1 on error,
11420 0 when no stubs will be needed, and 1 on success. */
11423 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11427 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11432 htab->sec_info_arr_size = bfd_get_next_section_id ();
11433 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11434 htab->sec_info = bfd_zmalloc (amt);
11435 if (htab->sec_info == NULL)
11438 /* Set toc_off for com, und, abs and ind sections. */
11439 for (id = 0; id < 3; id++)
11440 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11445 /* Set up for first pass at multitoc partitioning. */
11448 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11450 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11452 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11453 htab->toc_bfd = NULL;
11454 htab->toc_first_sec = NULL;
11457 /* The linker repeatedly calls this function for each TOC input section
11458 and linker generated GOT section. Group input bfds such that the toc
11459 within a group is less than 64k in size. */
11462 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11464 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11465 bfd_vma addr, off, limit;
11470 if (!htab->second_toc_pass)
11472 /* Keep track of the first .toc or .got section for this input bfd. */
11473 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11477 htab->toc_bfd = isec->owner;
11478 htab->toc_first_sec = isec;
11481 addr = isec->output_offset + isec->output_section->vma;
11482 off = addr - htab->toc_curr;
11483 limit = 0x80008000;
11484 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11486 if (off + isec->size > limit)
11488 addr = (htab->toc_first_sec->output_offset
11489 + htab->toc_first_sec->output_section->vma);
11490 htab->toc_curr = addr;
11491 htab->toc_curr &= -TOC_BASE_ALIGN;
11494 /* toc_curr is the base address of this toc group. Set elf_gp
11495 for the input section to be the offset relative to the
11496 output toc base plus 0x8000. Making the input elf_gp an
11497 offset allows us to move the toc as a whole without
11498 recalculating input elf_gp. */
11499 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11500 off += TOC_BASE_OFF;
11502 /* Die if someone uses a linker script that doesn't keep input
11503 file .toc and .got together. */
11505 && elf_gp (isec->owner) != 0
11506 && elf_gp (isec->owner) != off)
11509 elf_gp (isec->owner) = off;
11513 /* During the second pass toc_first_sec points to the start of
11514 a toc group, and toc_curr is used to track the old elf_gp.
11515 We use toc_bfd to ensure we only look at each bfd once. */
11516 if (htab->toc_bfd == isec->owner)
11518 htab->toc_bfd = isec->owner;
11520 if (htab->toc_first_sec == NULL
11521 || htab->toc_curr != elf_gp (isec->owner))
11523 htab->toc_curr = elf_gp (isec->owner);
11524 htab->toc_first_sec = isec;
11526 addr = (htab->toc_first_sec->output_offset
11527 + htab->toc_first_sec->output_section->vma);
11528 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11529 elf_gp (isec->owner) = off;
11534 /* Called via elf_link_hash_traverse to merge GOT entries for global
11538 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11540 if (h->root.type == bfd_link_hash_indirect)
11543 merge_got_entries (&h->got.glist);
11548 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11552 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11554 struct got_entry *gent;
11556 if (h->root.type == bfd_link_hash_indirect)
11559 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11560 if (!gent->is_indirect)
11561 allocate_got (h, (struct bfd_link_info *) inf, gent);
11565 /* Called on the first multitoc pass after the last call to
11566 ppc64_elf_next_toc_section. This function removes duplicate GOT
11570 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11572 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11573 struct bfd *ibfd, *ibfd2;
11574 bfd_boolean done_something;
11576 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11578 if (!htab->do_multi_toc)
11581 /* Merge global sym got entries within a toc group. */
11582 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11584 /* And tlsld_got. */
11585 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11587 struct got_entry *ent, *ent2;
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 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11598 if (!is_ppc64_elf (ibfd2))
11601 ent2 = ppc64_tlsld_got (ibfd2);
11602 if (!ent2->is_indirect
11603 && ent2->got.offset != (bfd_vma) -1
11604 && elf_gp (ibfd2) == elf_gp (ibfd))
11606 ent2->is_indirect = TRUE;
11607 ent2->got.ent = ent;
11613 /* Zap sizes of got sections. */
11614 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11615 htab->elf.irelplt->size -= htab->got_reli_size;
11616 htab->got_reli_size = 0;
11618 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11620 asection *got, *relgot;
11622 if (!is_ppc64_elf (ibfd))
11625 got = ppc64_elf_tdata (ibfd)->got;
11628 got->rawsize = got->size;
11630 relgot = ppc64_elf_tdata (ibfd)->relgot;
11631 relgot->rawsize = relgot->size;
11636 /* Now reallocate the got, local syms first. We don't need to
11637 allocate section contents again since we never increase size. */
11638 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11640 struct got_entry **lgot_ents;
11641 struct got_entry **end_lgot_ents;
11642 struct plt_entry **local_plt;
11643 struct plt_entry **end_local_plt;
11644 unsigned char *lgot_masks;
11645 bfd_size_type locsymcount;
11646 Elf_Internal_Shdr *symtab_hdr;
11649 if (!is_ppc64_elf (ibfd))
11652 lgot_ents = elf_local_got_ents (ibfd);
11656 symtab_hdr = &elf_symtab_hdr (ibfd);
11657 locsymcount = symtab_hdr->sh_info;
11658 end_lgot_ents = lgot_ents + locsymcount;
11659 local_plt = (struct plt_entry **) end_lgot_ents;
11660 end_local_plt = local_plt + locsymcount;
11661 lgot_masks = (unsigned char *) end_local_plt;
11662 s = ppc64_elf_tdata (ibfd)->got;
11663 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11665 struct got_entry *ent;
11667 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11669 unsigned int ent_size = 8;
11670 unsigned int rel_size = sizeof (Elf64_External_Rela);
11672 ent->got.offset = s->size;
11673 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11678 s->size += ent_size;
11679 if ((*lgot_masks & PLT_IFUNC) != 0)
11681 htab->elf.irelplt->size += rel_size;
11682 htab->got_reli_size += rel_size;
11684 else if (bfd_link_pic (info))
11686 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11687 srel->size += rel_size;
11693 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11695 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11697 struct got_entry *ent;
11699 if (!is_ppc64_elf (ibfd))
11702 ent = ppc64_tlsld_got (ibfd);
11703 if (!ent->is_indirect
11704 && ent->got.offset != (bfd_vma) -1)
11706 asection *s = ppc64_elf_tdata (ibfd)->got;
11707 ent->got.offset = s->size;
11709 if (bfd_link_pic (info))
11711 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11712 srel->size += sizeof (Elf64_External_Rela);
11717 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11718 if (!done_something)
11719 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11723 if (!is_ppc64_elf (ibfd))
11726 got = ppc64_elf_tdata (ibfd)->got;
11729 done_something = got->rawsize != got->size;
11730 if (done_something)
11735 if (done_something)
11736 (*htab->params->layout_sections_again) ();
11738 /* Set up for second pass over toc sections to recalculate elf_gp
11739 on input sections. */
11740 htab->toc_bfd = NULL;
11741 htab->toc_first_sec = NULL;
11742 htab->second_toc_pass = TRUE;
11743 return done_something;
11746 /* Called after second pass of multitoc partitioning. */
11749 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11751 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11753 /* After the second pass, toc_curr tracks the TOC offset used
11754 for code sections below in ppc64_elf_next_input_section. */
11755 htab->toc_curr = TOC_BASE_OFF;
11758 /* No toc references were found in ISEC. If the code in ISEC makes no
11759 calls, then there's no need to use toc adjusting stubs when branching
11760 into ISEC. Actually, indirect calls from ISEC are OK as they will
11761 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11762 needed, and 2 if a cyclical call-graph was found but no other reason
11763 for a stub was detected. If called from the top level, a return of
11764 2 means the same as a return of 0. */
11767 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11771 /* Mark this section as checked. */
11772 isec->call_check_done = 1;
11774 /* We know none of our code bearing sections will need toc stubs. */
11775 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11778 if (isec->size == 0)
11781 if (isec->output_section == NULL)
11785 if (isec->reloc_count != 0)
11787 Elf_Internal_Rela *relstart, *rel;
11788 Elf_Internal_Sym *local_syms;
11789 struct ppc_link_hash_table *htab;
11791 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11792 info->keep_memory);
11793 if (relstart == NULL)
11796 /* Look for branches to outside of this section. */
11798 htab = ppc_hash_table (info);
11802 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11804 enum elf_ppc64_reloc_type r_type;
11805 unsigned long r_symndx;
11806 struct elf_link_hash_entry *h;
11807 struct ppc_link_hash_entry *eh;
11808 Elf_Internal_Sym *sym;
11810 struct _opd_sec_data *opd;
11814 r_type = ELF64_R_TYPE (rel->r_info);
11815 if (r_type != R_PPC64_REL24
11816 && r_type != R_PPC64_REL14
11817 && r_type != R_PPC64_REL14_BRTAKEN
11818 && r_type != R_PPC64_REL14_BRNTAKEN)
11821 r_symndx = ELF64_R_SYM (rel->r_info);
11822 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11829 /* Calls to dynamic lib functions go through a plt call stub
11831 eh = (struct ppc_link_hash_entry *) h;
11833 && (eh->elf.plt.plist != NULL
11835 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11841 if (sym_sec == NULL)
11842 /* Ignore other undefined symbols. */
11845 /* Assume branches to other sections not included in the
11846 link need stubs too, to cover -R and absolute syms. */
11847 if (sym_sec->output_section == NULL)
11854 sym_value = sym->st_value;
11857 if (h->root.type != bfd_link_hash_defined
11858 && h->root.type != bfd_link_hash_defweak)
11860 sym_value = h->root.u.def.value;
11862 sym_value += rel->r_addend;
11864 /* If this branch reloc uses an opd sym, find the code section. */
11865 opd = get_opd_info (sym_sec);
11868 if (h == NULL && opd->adjust != NULL)
11872 adjust = opd->adjust[OPD_NDX (sym_value)];
11874 /* Assume deleted functions won't ever be called. */
11876 sym_value += adjust;
11879 dest = opd_entry_value (sym_sec, sym_value,
11880 &sym_sec, NULL, FALSE);
11881 if (dest == (bfd_vma) -1)
11886 + sym_sec->output_offset
11887 + sym_sec->output_section->vma);
11889 /* Ignore branch to self. */
11890 if (sym_sec == isec)
11893 /* If the called function uses the toc, we need a stub. */
11894 if (sym_sec->has_toc_reloc
11895 || sym_sec->makes_toc_func_call)
11901 /* Assume any branch that needs a long branch stub might in fact
11902 need a plt_branch stub. A plt_branch stub uses r2. */
11903 else if (dest - (isec->output_offset
11904 + isec->output_section->vma
11905 + rel->r_offset) + (1 << 25)
11906 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11914 /* If calling back to a section in the process of being
11915 tested, we can't say for sure that no toc adjusting stubs
11916 are needed, so don't return zero. */
11917 else if (sym_sec->call_check_in_progress)
11920 /* Branches to another section that itself doesn't have any TOC
11921 references are OK. Recursively call ourselves to check. */
11922 else if (!sym_sec->call_check_done)
11926 /* Mark current section as indeterminate, so that other
11927 sections that call back to current won't be marked as
11929 isec->call_check_in_progress = 1;
11930 recur = toc_adjusting_stub_needed (info, sym_sec);
11931 isec->call_check_in_progress = 0;
11942 if (local_syms != NULL
11943 && (elf_symtab_hdr (isec->owner).contents
11944 != (unsigned char *) local_syms))
11946 if (elf_section_data (isec)->relocs != relstart)
11951 && isec->map_head.s != NULL
11952 && (strcmp (isec->output_section->name, ".init") == 0
11953 || strcmp (isec->output_section->name, ".fini") == 0))
11955 if (isec->map_head.s->has_toc_reloc
11956 || isec->map_head.s->makes_toc_func_call)
11958 else if (!isec->map_head.s->call_check_done)
11961 isec->call_check_in_progress = 1;
11962 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11963 isec->call_check_in_progress = 0;
11970 isec->makes_toc_func_call = 1;
11975 /* The linker repeatedly calls this function for each input section,
11976 in the order that input sections are linked into output sections.
11977 Build lists of input sections to determine groupings between which
11978 we may insert linker stubs. */
11981 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11983 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11988 if ((isec->output_section->flags & SEC_CODE) != 0
11989 && isec->output_section->id < htab->sec_info_arr_size)
11991 /* This happens to make the list in reverse order,
11992 which is what we want. */
11993 htab->sec_info[isec->id].u.list
11994 = htab->sec_info[isec->output_section->id].u.list;
11995 htab->sec_info[isec->output_section->id].u.list = isec;
11998 if (htab->multi_toc_needed)
12000 /* Analyse sections that aren't already flagged as needing a
12001 valid toc pointer. Exclude .fixup for the linux kernel.
12002 .fixup contains branches, but only back to the function that
12003 hit an exception. */
12004 if (!(isec->has_toc_reloc
12005 || (isec->flags & SEC_CODE) == 0
12006 || strcmp (isec->name, ".fixup") == 0
12007 || isec->call_check_done))
12009 if (toc_adjusting_stub_needed (info, isec) < 0)
12012 /* Make all sections use the TOC assigned for this object file.
12013 This will be wrong for pasted sections; We fix that in
12014 check_pasted_section(). */
12015 if (elf_gp (isec->owner) != 0)
12016 htab->toc_curr = elf_gp (isec->owner);
12019 htab->sec_info[isec->id].toc_off = htab->toc_curr;
12023 /* Check that all .init and .fini sections use the same toc, if they
12024 have toc relocs. */
12027 check_pasted_section (struct bfd_link_info *info, const char *name)
12029 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12033 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12034 bfd_vma toc_off = 0;
12037 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12038 if (i->has_toc_reloc)
12041 toc_off = htab->sec_info[i->id].toc_off;
12042 else if (toc_off != htab->sec_info[i->id].toc_off)
12047 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12048 if (i->makes_toc_func_call)
12050 toc_off = htab->sec_info[i->id].toc_off;
12054 /* Make sure the whole pasted function uses the same toc offset. */
12056 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12057 htab->sec_info[i->id].toc_off = toc_off;
12063 ppc64_elf_check_init_fini (struct bfd_link_info *info)
12065 return (check_pasted_section (info, ".init")
12066 & check_pasted_section (info, ".fini"));
12069 /* See whether we can group stub sections together. Grouping stub
12070 sections may result in fewer stubs. More importantly, we need to
12071 put all .init* and .fini* stubs at the beginning of the .init or
12072 .fini output sections respectively, because glibc splits the
12073 _init and _fini functions into multiple parts. Putting a stub in
12074 the middle of a function is not a good idea. */
12077 group_sections (struct bfd_link_info *info,
12078 bfd_size_type stub_group_size,
12079 bfd_boolean stubs_always_before_branch)
12081 struct ppc_link_hash_table *htab;
12083 bfd_boolean suppress_size_errors;
12085 htab = ppc_hash_table (info);
12089 suppress_size_errors = FALSE;
12090 if (stub_group_size == 1)
12092 /* Default values. */
12093 if (stubs_always_before_branch)
12094 stub_group_size = 0x1e00000;
12096 stub_group_size = 0x1c00000;
12097 suppress_size_errors = TRUE;
12100 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12104 if (osec->id >= htab->sec_info_arr_size)
12107 tail = htab->sec_info[osec->id].u.list;
12108 while (tail != NULL)
12112 bfd_size_type total;
12113 bfd_boolean big_sec;
12115 struct map_stub *group;
12116 bfd_size_type group_size;
12119 total = tail->size;
12120 group_size = (ppc64_elf_section_data (tail) != NULL
12121 && ppc64_elf_section_data (tail)->has_14bit_branch
12122 ? stub_group_size >> 10 : stub_group_size);
12124 big_sec = total > group_size;
12125 if (big_sec && !suppress_size_errors)
12126 /* xgettext:c-format */
12127 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12128 tail->owner, tail);
12129 curr_toc = htab->sec_info[tail->id].toc_off;
12131 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12132 && ((total += curr->output_offset - prev->output_offset)
12133 < (ppc64_elf_section_data (prev) != NULL
12134 && ppc64_elf_section_data (prev)->has_14bit_branch
12135 ? (group_size = stub_group_size >> 10) : group_size))
12136 && htab->sec_info[prev->id].toc_off == curr_toc)
12139 /* OK, the size from the start of CURR to the end is less
12140 than group_size and thus can be handled by one stub
12141 section. (or the tail section is itself larger than
12142 group_size, in which case we may be toast.) We should
12143 really be keeping track of the total size of stubs added
12144 here, as stubs contribute to the final output section
12145 size. That's a little tricky, and this way will only
12146 break if stubs added make the total size more than 2^25,
12147 ie. for the default stub_group_size, if stubs total more
12148 than 2097152 bytes, or nearly 75000 plt call stubs. */
12149 group = bfd_alloc (curr->owner, sizeof (*group));
12152 group->link_sec = curr;
12153 group->stub_sec = NULL;
12154 group->needs_save_res = 0;
12155 group->next = htab->group;
12156 htab->group = group;
12159 prev = htab->sec_info[tail->id].u.list;
12160 /* Set up this stub group. */
12161 htab->sec_info[tail->id].u.group = group;
12163 while (tail != curr && (tail = prev) != NULL);
12165 /* But wait, there's more! Input sections up to group_size
12166 bytes before the stub section can be handled by it too.
12167 Don't do this if we have a really large section after the
12168 stubs, as adding more stubs increases the chance that
12169 branches may not reach into the stub section. */
12170 if (!stubs_always_before_branch && !big_sec)
12173 while (prev != NULL
12174 && ((total += tail->output_offset - prev->output_offset)
12175 < (ppc64_elf_section_data (prev) != NULL
12176 && ppc64_elf_section_data (prev)->has_14bit_branch
12177 ? (group_size = stub_group_size >> 10) : group_size))
12178 && htab->sec_info[prev->id].toc_off == curr_toc)
12181 prev = htab->sec_info[tail->id].u.list;
12182 htab->sec_info[tail->id].u.group = group;
12191 static const unsigned char glink_eh_frame_cie[] =
12193 0, 0, 0, 16, /* length. */
12194 0, 0, 0, 0, /* id. */
12195 1, /* CIE version. */
12196 'z', 'R', 0, /* Augmentation string. */
12197 4, /* Code alignment. */
12198 0x78, /* Data alignment. */
12200 1, /* Augmentation size. */
12201 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12202 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
12206 /* Stripping output sections is normally done before dynamic section
12207 symbols have been allocated. This function is called later, and
12208 handles cases like htab->brlt which is mapped to its own output
12212 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12214 if (isec->size == 0
12215 && isec->output_section->size == 0
12216 && !(isec->output_section->flags & SEC_KEEP)
12217 && !bfd_section_removed_from_list (info->output_bfd,
12218 isec->output_section)
12219 && elf_section_data (isec->output_section)->dynindx == 0)
12221 isec->output_section->flags |= SEC_EXCLUDE;
12222 bfd_section_list_remove (info->output_bfd, isec->output_section);
12223 info->output_bfd->section_count--;
12227 /* Determine and set the size of the stub section for a final link.
12229 The basic idea here is to examine all the relocations looking for
12230 PC-relative calls to a target that is unreachable with a "bl"
12234 ppc64_elf_size_stubs (struct bfd_link_info *info)
12236 bfd_size_type stub_group_size;
12237 bfd_boolean stubs_always_before_branch;
12238 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12243 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12244 htab->params->plt_thread_safe = 1;
12245 if (!htab->opd_abi)
12246 htab->params->plt_thread_safe = 0;
12247 else if (htab->params->plt_thread_safe == -1)
12249 static const char *const thread_starter[] =
12253 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12255 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12256 "mq_notify", "create_timer",
12261 "GOMP_parallel_start",
12262 "GOMP_parallel_loop_static",
12263 "GOMP_parallel_loop_static_start",
12264 "GOMP_parallel_loop_dynamic",
12265 "GOMP_parallel_loop_dynamic_start",
12266 "GOMP_parallel_loop_guided",
12267 "GOMP_parallel_loop_guided_start",
12268 "GOMP_parallel_loop_runtime",
12269 "GOMP_parallel_loop_runtime_start",
12270 "GOMP_parallel_sections",
12271 "GOMP_parallel_sections_start",
12277 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12279 struct elf_link_hash_entry *h;
12280 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12281 FALSE, FALSE, TRUE);
12282 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12283 if (htab->params->plt_thread_safe)
12287 stubs_always_before_branch = htab->params->group_size < 0;
12288 if (htab->params->group_size < 0)
12289 stub_group_size = -htab->params->group_size;
12291 stub_group_size = htab->params->group_size;
12293 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12296 #define STUB_SHRINK_ITER 20
12297 /* Loop until no stubs added. After iteration 20 of this loop we may
12298 exit on a stub section shrinking. This is to break out of a
12299 pathological case where adding stubs on one iteration decreases
12300 section gaps (perhaps due to alignment), which then requires
12301 fewer or smaller stubs on the next iteration. */
12306 unsigned int bfd_indx;
12307 struct map_stub *group;
12308 asection *stub_sec;
12310 htab->stub_iteration += 1;
12312 for (input_bfd = info->input_bfds, bfd_indx = 0;
12314 input_bfd = input_bfd->link.next, bfd_indx++)
12316 Elf_Internal_Shdr *symtab_hdr;
12318 Elf_Internal_Sym *local_syms = NULL;
12320 if (!is_ppc64_elf (input_bfd))
12323 /* We'll need the symbol table in a second. */
12324 symtab_hdr = &elf_symtab_hdr (input_bfd);
12325 if (symtab_hdr->sh_info == 0)
12328 /* Walk over each section attached to the input bfd. */
12329 for (section = input_bfd->sections;
12331 section = section->next)
12333 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12335 /* If there aren't any relocs, then there's nothing more
12337 if ((section->flags & SEC_RELOC) == 0
12338 || (section->flags & SEC_ALLOC) == 0
12339 || (section->flags & SEC_LOAD) == 0
12340 || (section->flags & SEC_CODE) == 0
12341 || section->reloc_count == 0)
12344 /* If this section is a link-once section that will be
12345 discarded, then don't create any stubs. */
12346 if (section->output_section == NULL
12347 || section->output_section->owner != info->output_bfd)
12350 /* Get the relocs. */
12352 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12353 info->keep_memory);
12354 if (internal_relocs == NULL)
12355 goto error_ret_free_local;
12357 /* Now examine each relocation. */
12358 irela = internal_relocs;
12359 irelaend = irela + section->reloc_count;
12360 for (; irela < irelaend; irela++)
12362 enum elf_ppc64_reloc_type r_type;
12363 unsigned int r_indx;
12364 enum ppc_stub_type stub_type;
12365 struct ppc_stub_hash_entry *stub_entry;
12366 asection *sym_sec, *code_sec;
12367 bfd_vma sym_value, code_value;
12368 bfd_vma destination;
12369 unsigned long local_off;
12370 bfd_boolean ok_dest;
12371 struct ppc_link_hash_entry *hash;
12372 struct ppc_link_hash_entry *fdh;
12373 struct elf_link_hash_entry *h;
12374 Elf_Internal_Sym *sym;
12376 const asection *id_sec;
12377 struct _opd_sec_data *opd;
12378 struct plt_entry *plt_ent;
12380 r_type = ELF64_R_TYPE (irela->r_info);
12381 r_indx = ELF64_R_SYM (irela->r_info);
12383 if (r_type >= R_PPC64_max)
12385 bfd_set_error (bfd_error_bad_value);
12386 goto error_ret_free_internal;
12389 /* Only look for stubs on branch instructions. */
12390 if (r_type != R_PPC64_REL24
12391 && r_type != R_PPC64_REL14
12392 && r_type != R_PPC64_REL14_BRTAKEN
12393 && r_type != R_PPC64_REL14_BRNTAKEN)
12396 /* Now determine the call target, its name, value,
12398 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12399 r_indx, input_bfd))
12400 goto error_ret_free_internal;
12401 hash = (struct ppc_link_hash_entry *) h;
12408 sym_value = sym->st_value;
12409 if (sym_sec != NULL
12410 && sym_sec->output_section != NULL)
12413 else if (hash->elf.root.type == bfd_link_hash_defined
12414 || hash->elf.root.type == bfd_link_hash_defweak)
12416 sym_value = hash->elf.root.u.def.value;
12417 if (sym_sec->output_section != NULL)
12420 else if (hash->elf.root.type == bfd_link_hash_undefweak
12421 || hash->elf.root.type == bfd_link_hash_undefined)
12423 /* Recognise an old ABI func code entry sym, and
12424 use the func descriptor sym instead if it is
12426 if (hash->elf.root.root.string[0] == '.'
12427 && (fdh = lookup_fdh (hash, htab)) != NULL)
12429 if (fdh->elf.root.type == bfd_link_hash_defined
12430 || fdh->elf.root.type == bfd_link_hash_defweak)
12432 sym_sec = fdh->elf.root.u.def.section;
12433 sym_value = fdh->elf.root.u.def.value;
12434 if (sym_sec->output_section != NULL)
12443 bfd_set_error (bfd_error_bad_value);
12444 goto error_ret_free_internal;
12451 sym_value += irela->r_addend;
12452 destination = (sym_value
12453 + sym_sec->output_offset
12454 + sym_sec->output_section->vma);
12455 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12460 code_sec = sym_sec;
12461 code_value = sym_value;
12462 opd = get_opd_info (sym_sec);
12467 if (hash == NULL && opd->adjust != NULL)
12469 long adjust = opd->adjust[OPD_NDX (sym_value)];
12472 code_value += adjust;
12473 sym_value += adjust;
12475 dest = opd_entry_value (sym_sec, sym_value,
12476 &code_sec, &code_value, FALSE);
12477 if (dest != (bfd_vma) -1)
12479 destination = dest;
12482 /* Fixup old ABI sym to point at code
12484 hash->elf.root.type = bfd_link_hash_defweak;
12485 hash->elf.root.u.def.section = code_sec;
12486 hash->elf.root.u.def.value = code_value;
12491 /* Determine what (if any) linker stub is needed. */
12493 stub_type = ppc_type_of_stub (section, irela, &hash,
12494 &plt_ent, destination,
12497 if (stub_type != ppc_stub_plt_call)
12499 /* Check whether we need a TOC adjusting stub.
12500 Since the linker pastes together pieces from
12501 different object files when creating the
12502 _init and _fini functions, it may be that a
12503 call to what looks like a local sym is in
12504 fact a call needing a TOC adjustment. */
12505 if (code_sec != NULL
12506 && code_sec->output_section != NULL
12507 && (htab->sec_info[code_sec->id].toc_off
12508 != htab->sec_info[section->id].toc_off)
12509 && (code_sec->has_toc_reloc
12510 || code_sec->makes_toc_func_call))
12511 stub_type = ppc_stub_long_branch_r2off;
12514 if (stub_type == ppc_stub_none)
12517 /* __tls_get_addr calls might be eliminated. */
12518 if (stub_type != ppc_stub_plt_call
12520 && (hash == htab->tls_get_addr
12521 || hash == htab->tls_get_addr_fd)
12522 && section->has_tls_reloc
12523 && irela != internal_relocs)
12525 /* Get tls info. */
12526 unsigned char *tls_mask;
12528 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12529 irela - 1, input_bfd))
12530 goto error_ret_free_internal;
12531 if (*tls_mask != 0)
12535 if (stub_type == ppc_stub_plt_call
12536 && irela + 1 < irelaend
12537 && irela[1].r_offset == irela->r_offset + 4
12538 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12540 if (!tocsave_find (htab, INSERT,
12541 &local_syms, irela + 1, input_bfd))
12542 goto error_ret_free_internal;
12544 else if (stub_type == ppc_stub_plt_call)
12545 stub_type = ppc_stub_plt_call_r2save;
12547 /* Support for grouping stub sections. */
12548 id_sec = htab->sec_info[section->id].u.group->link_sec;
12550 /* Get the name of this stub. */
12551 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12553 goto error_ret_free_internal;
12555 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12556 stub_name, FALSE, FALSE);
12557 if (stub_entry != NULL)
12559 /* The proper stub has already been created. */
12561 if (stub_type == ppc_stub_plt_call_r2save)
12562 stub_entry->stub_type = stub_type;
12566 stub_entry = ppc_add_stub (stub_name, section, info);
12567 if (stub_entry == NULL)
12570 error_ret_free_internal:
12571 if (elf_section_data (section)->relocs == NULL)
12572 free (internal_relocs);
12573 error_ret_free_local:
12574 if (local_syms != NULL
12575 && (symtab_hdr->contents
12576 != (unsigned char *) local_syms))
12581 stub_entry->stub_type = stub_type;
12582 if (stub_type != ppc_stub_plt_call
12583 && stub_type != ppc_stub_plt_call_r2save)
12585 stub_entry->target_value = code_value;
12586 stub_entry->target_section = code_sec;
12590 stub_entry->target_value = sym_value;
12591 stub_entry->target_section = sym_sec;
12593 stub_entry->h = hash;
12594 stub_entry->plt_ent = plt_ent;
12595 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12597 if (stub_entry->h != NULL)
12598 htab->stub_globals += 1;
12601 /* We're done with the internal relocs, free them. */
12602 if (elf_section_data (section)->relocs != internal_relocs)
12603 free (internal_relocs);
12606 if (local_syms != NULL
12607 && symtab_hdr->contents != (unsigned char *) local_syms)
12609 if (!info->keep_memory)
12612 symtab_hdr->contents = (unsigned char *) local_syms;
12616 /* We may have added some stubs. Find out the new size of the
12618 for (stub_sec = htab->params->stub_bfd->sections;
12620 stub_sec = stub_sec->next)
12621 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12623 if (htab->stub_iteration <= STUB_SHRINK_ITER
12624 || stub_sec->rawsize < stub_sec->size)
12625 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12626 stub_sec->rawsize = stub_sec->size;
12627 stub_sec->size = 0;
12628 stub_sec->reloc_count = 0;
12629 stub_sec->flags &= ~SEC_RELOC;
12632 htab->brlt->size = 0;
12633 htab->brlt->reloc_count = 0;
12634 htab->brlt->flags &= ~SEC_RELOC;
12635 if (htab->relbrlt != NULL)
12636 htab->relbrlt->size = 0;
12638 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12640 for (group = htab->group; group != NULL; group = group->next)
12641 if (group->needs_save_res)
12642 group->stub_sec->size += htab->sfpr->size;
12644 if (info->emitrelocations
12645 && htab->glink != NULL && htab->glink->size != 0)
12647 htab->glink->reloc_count = 1;
12648 htab->glink->flags |= SEC_RELOC;
12651 if (htab->glink_eh_frame != NULL
12652 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12653 && htab->glink_eh_frame->output_section->size != 0)
12655 size_t size = 0, align;
12657 for (stub_sec = htab->params->stub_bfd->sections;
12659 stub_sec = stub_sec->next)
12660 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12662 if (htab->glink != NULL && htab->glink->size != 0)
12665 size += sizeof (glink_eh_frame_cie);
12667 align <<= htab->glink_eh_frame->output_section->alignment_power;
12669 size = (size + align) & ~align;
12670 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12671 htab->glink_eh_frame->size = size;
12674 if (htab->params->plt_stub_align != 0)
12675 for (stub_sec = htab->params->stub_bfd->sections;
12677 stub_sec = stub_sec->next)
12678 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12679 stub_sec->size = ((stub_sec->size
12680 + (1 << htab->params->plt_stub_align) - 1)
12681 & -(1 << htab->params->plt_stub_align));
12683 for (stub_sec = htab->params->stub_bfd->sections;
12685 stub_sec = stub_sec->next)
12686 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12687 && stub_sec->rawsize != stub_sec->size
12688 && (htab->stub_iteration <= STUB_SHRINK_ITER
12689 || stub_sec->rawsize < stub_sec->size))
12692 if (stub_sec == NULL
12693 && (htab->glink_eh_frame == NULL
12694 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12697 /* Ask the linker to do its stuff. */
12698 (*htab->params->layout_sections_again) ();
12701 if (htab->glink_eh_frame != NULL
12702 && htab->glink_eh_frame->size != 0)
12705 bfd_byte *p, *last_fde;
12706 size_t last_fde_len, size, align, pad;
12707 asection *stub_sec;
12709 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12712 htab->glink_eh_frame->contents = p;
12715 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12716 /* CIE length (rewrite in case little-endian). */
12717 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12718 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12719 p += sizeof (glink_eh_frame_cie);
12721 for (stub_sec = htab->params->stub_bfd->sections;
12723 stub_sec = stub_sec->next)
12724 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12729 bfd_put_32 (htab->elf.dynobj, 20, p);
12732 val = p - htab->glink_eh_frame->contents;
12733 bfd_put_32 (htab->elf.dynobj, val, p);
12735 /* Offset to stub section, written later. */
12737 /* stub section size. */
12738 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12740 /* Augmentation. */
12745 if (htab->glink != NULL && htab->glink->size != 0)
12750 bfd_put_32 (htab->elf.dynobj, 20, p);
12753 val = p - htab->glink_eh_frame->contents;
12754 bfd_put_32 (htab->elf.dynobj, val, p);
12756 /* Offset to .glink, written later. */
12759 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12761 /* Augmentation. */
12764 *p++ = DW_CFA_advance_loc + 1;
12765 *p++ = DW_CFA_register;
12767 *p++ = htab->opd_abi ? 12 : 0;
12768 *p++ = DW_CFA_advance_loc + 4;
12769 *p++ = DW_CFA_restore_extended;
12772 /* Subsume any padding into the last FDE if user .eh_frame
12773 sections are aligned more than glink_eh_frame. Otherwise any
12774 zero padding will be seen as a terminator. */
12775 size = p - htab->glink_eh_frame->contents;
12777 align <<= htab->glink_eh_frame->output_section->alignment_power;
12779 pad = ((size + align) & ~align) - size;
12780 htab->glink_eh_frame->size = size + pad;
12781 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12784 maybe_strip_output (info, htab->brlt);
12785 if (htab->glink_eh_frame != NULL)
12786 maybe_strip_output (info, htab->glink_eh_frame);
12791 /* Called after we have determined section placement. If sections
12792 move, we'll be called again. Provide a value for TOCstart. */
12795 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12798 bfd_vma TOCstart, adjust;
12802 struct elf_link_hash_entry *h;
12803 struct elf_link_hash_table *htab = elf_hash_table (info);
12805 if (is_elf_hash_table (htab)
12806 && htab->hgot != NULL)
12810 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12811 if (is_elf_hash_table (htab))
12815 && h->root.type == bfd_link_hash_defined
12816 && !h->root.linker_def
12817 && (!is_elf_hash_table (htab)
12818 || h->def_regular))
12820 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12821 + h->root.u.def.section->output_offset
12822 + h->root.u.def.section->output_section->vma);
12823 _bfd_set_gp_value (obfd, TOCstart);
12828 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12829 order. The TOC starts where the first of these sections starts. */
12830 s = bfd_get_section_by_name (obfd, ".got");
12831 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12832 s = bfd_get_section_by_name (obfd, ".toc");
12833 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12834 s = bfd_get_section_by_name (obfd, ".tocbss");
12835 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12836 s = bfd_get_section_by_name (obfd, ".plt");
12837 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12839 /* This may happen for
12840 o references to TOC base (SYM@toc / TOC[tc0]) without a
12842 o bad linker script
12843 o --gc-sections and empty TOC sections
12845 FIXME: Warn user? */
12847 /* Look for a likely section. We probably won't even be
12849 for (s = obfd->sections; s != NULL; s = s->next)
12850 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12852 == (SEC_ALLOC | SEC_SMALL_DATA))
12855 for (s = obfd->sections; s != NULL; s = s->next)
12856 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12857 == (SEC_ALLOC | SEC_SMALL_DATA))
12860 for (s = obfd->sections; s != NULL; s = s->next)
12861 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12865 for (s = obfd->sections; s != NULL; s = s->next)
12866 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12872 TOCstart = s->output_section->vma + s->output_offset;
12874 /* Force alignment. */
12875 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12876 TOCstart -= adjust;
12877 _bfd_set_gp_value (obfd, TOCstart);
12879 if (info != NULL && s != NULL)
12881 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12885 if (htab->elf.hgot != NULL)
12887 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
12888 htab->elf.hgot->root.u.def.section = s;
12893 struct bfd_link_hash_entry *bh = NULL;
12894 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12895 s, TOC_BASE_OFF - adjust,
12896 NULL, FALSE, FALSE, &bh);
12902 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12903 write out any global entry stubs. */
12906 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12908 struct bfd_link_info *info;
12909 struct ppc_link_hash_table *htab;
12910 struct plt_entry *pent;
12913 if (h->root.type == bfd_link_hash_indirect)
12916 if (!h->pointer_equality_needed)
12919 if (h->def_regular)
12923 htab = ppc_hash_table (info);
12928 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12929 if (pent->plt.offset != (bfd_vma) -1
12930 && pent->addend == 0)
12936 p = s->contents + h->root.u.def.value;
12937 plt = htab->elf.splt;
12938 if (!htab->elf.dynamic_sections_created
12939 || h->dynindx == -1)
12940 plt = htab->elf.iplt;
12941 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12942 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12944 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12946 info->callbacks->einfo
12947 (_("%P: linkage table error against `%T'\n"),
12948 h->root.root.string);
12949 bfd_set_error (bfd_error_bad_value);
12950 htab->stub_error = TRUE;
12953 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12954 if (htab->params->emit_stub_syms)
12956 size_t len = strlen (h->root.root.string);
12957 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12962 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12963 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12966 if (h->root.type == bfd_link_hash_new)
12968 h->root.type = bfd_link_hash_defined;
12969 h->root.u.def.section = s;
12970 h->root.u.def.value = p - s->contents;
12971 h->ref_regular = 1;
12972 h->def_regular = 1;
12973 h->ref_regular_nonweak = 1;
12974 h->forced_local = 1;
12976 h->root.linker_def = 1;
12980 if (PPC_HA (off) != 0)
12982 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12985 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12987 bfd_put_32 (s->owner, MTCTR_R12, p);
12989 bfd_put_32 (s->owner, BCTR, p);
12995 /* Build all the stubs associated with the current output file.
12996 The stubs are kept in a hash table attached to the main linker
12997 hash table. This function is called via gldelf64ppc_finish. */
13000 ppc64_elf_build_stubs (struct bfd_link_info *info,
13003 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13004 struct map_stub *group;
13005 asection *stub_sec;
13007 int stub_sec_count = 0;
13012 /* Allocate memory to hold the linker stubs. */
13013 for (stub_sec = htab->params->stub_bfd->sections;
13015 stub_sec = stub_sec->next)
13016 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
13017 && stub_sec->size != 0)
13019 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
13020 if (stub_sec->contents == NULL)
13022 stub_sec->size = 0;
13025 if (htab->glink != NULL && htab->glink->size != 0)
13030 /* Build the .glink plt call stub. */
13031 if (htab->params->emit_stub_syms)
13033 struct elf_link_hash_entry *h;
13034 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13035 TRUE, FALSE, FALSE);
13038 if (h->root.type == bfd_link_hash_new)
13040 h->root.type = bfd_link_hash_defined;
13041 h->root.u.def.section = htab->glink;
13042 h->root.u.def.value = 8;
13043 h->ref_regular = 1;
13044 h->def_regular = 1;
13045 h->ref_regular_nonweak = 1;
13046 h->forced_local = 1;
13048 h->root.linker_def = 1;
13051 plt0 = (htab->elf.splt->output_section->vma
13052 + htab->elf.splt->output_offset
13054 if (info->emitrelocations)
13056 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13059 r->r_offset = (htab->glink->output_offset
13060 + htab->glink->output_section->vma);
13061 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13062 r->r_addend = plt0;
13064 p = htab->glink->contents;
13065 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
13066 bfd_put_64 (htab->glink->owner, plt0, p);
13070 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13072 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13074 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13076 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13078 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13080 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13082 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13084 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13086 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13088 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13093 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
13095 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13097 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13099 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13101 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13103 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13105 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13107 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13109 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13111 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13113 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13115 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13118 bfd_put_32 (htab->glink->owner, BCTR, p);
13120 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13122 bfd_put_32 (htab->glink->owner, NOP, p);
13126 /* Build the .glink lazy link call stubs. */
13128 while (p < htab->glink->contents + htab->glink->rawsize)
13134 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13139 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13141 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13146 bfd_put_32 (htab->glink->owner,
13147 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13152 /* Build .glink global entry stubs. */
13153 if (htab->glink->size > htab->glink->rawsize)
13154 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13157 if (htab->brlt != NULL && htab->brlt->size != 0)
13159 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13161 if (htab->brlt->contents == NULL)
13164 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13166 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13167 htab->relbrlt->size);
13168 if (htab->relbrlt->contents == NULL)
13172 /* Build the stubs as directed by the stub hash table. */
13173 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13175 for (group = htab->group; group != NULL; group = group->next)
13176 if (group->needs_save_res)
13178 stub_sec = group->stub_sec;
13179 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13181 if (htab->params->emit_stub_syms)
13185 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13186 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13189 stub_sec->size += htab->sfpr->size;
13192 if (htab->relbrlt != NULL)
13193 htab->relbrlt->reloc_count = 0;
13195 if (htab->params->plt_stub_align != 0)
13196 for (stub_sec = htab->params->stub_bfd->sections;
13198 stub_sec = stub_sec->next)
13199 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13200 stub_sec->size = ((stub_sec->size
13201 + (1 << htab->params->plt_stub_align) - 1)
13202 & -(1 << htab->params->plt_stub_align));
13204 for (stub_sec = htab->params->stub_bfd->sections;
13206 stub_sec = stub_sec->next)
13207 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13209 stub_sec_count += 1;
13210 if (stub_sec->rawsize != stub_sec->size
13211 && (htab->stub_iteration <= STUB_SHRINK_ITER
13212 || stub_sec->rawsize < stub_sec->size))
13216 /* Note that the glink_eh_frame check here is not only testing that
13217 the generated size matched the calculated size but also that
13218 bfd_elf_discard_info didn't make any changes to the section. */
13219 if (stub_sec != NULL
13220 || (htab->glink_eh_frame != NULL
13221 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
13223 htab->stub_error = TRUE;
13224 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13227 if (htab->stub_error)
13232 *stats = bfd_malloc (500);
13233 if (*stats == NULL)
13236 sprintf (*stats, _("linker stubs in %u group%s\n"
13238 " toc adjust %lu\n"
13239 " long branch %lu\n"
13240 " long toc adj %lu\n"
13242 " plt call toc %lu\n"
13243 " global entry %lu"),
13245 stub_sec_count == 1 ? "" : "s",
13246 htab->stub_count[ppc_stub_long_branch - 1],
13247 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13248 htab->stub_count[ppc_stub_plt_branch - 1],
13249 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13250 htab->stub_count[ppc_stub_plt_call - 1],
13251 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13252 htab->stub_count[ppc_stub_global_entry - 1]);
13257 /* This function undoes the changes made by add_symbol_adjust. */
13260 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
13262 struct ppc_link_hash_entry *eh;
13264 if (h->root.type == bfd_link_hash_indirect)
13267 eh = (struct ppc_link_hash_entry *) h;
13268 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
13271 eh->elf.root.type = bfd_link_hash_undefined;
13276 ppc64_elf_restore_symbols (struct bfd_link_info *info)
13278 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13281 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
13284 /* What to do when ld finds relocations against symbols defined in
13285 discarded sections. */
13287 static unsigned int
13288 ppc64_elf_action_discarded (asection *sec)
13290 if (strcmp (".opd", sec->name) == 0)
13293 if (strcmp (".toc", sec->name) == 0)
13296 if (strcmp (".toc1", sec->name) == 0)
13299 return _bfd_elf_default_action_discarded (sec);
13302 /* The RELOCATE_SECTION function is called by the ELF backend linker
13303 to handle the relocations for a section.
13305 The relocs are always passed as Rela structures; if the section
13306 actually uses Rel structures, the r_addend field will always be
13309 This function is responsible for adjust the section contents as
13310 necessary, and (if using Rela relocs and generating a
13311 relocatable output file) adjusting the reloc addend as
13314 This function does not have to worry about setting the reloc
13315 address or the reloc symbol index.
13317 LOCAL_SYMS is a pointer to the swapped in local symbols.
13319 LOCAL_SECTIONS is an array giving the section in the input file
13320 corresponding to the st_shndx field of each local symbol.
13322 The global hash table entry for the global symbols can be found
13323 via elf_sym_hashes (input_bfd).
13325 When generating relocatable output, this function must handle
13326 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13327 going to be the section symbol corresponding to the output
13328 section, which means that the addend must be adjusted
13332 ppc64_elf_relocate_section (bfd *output_bfd,
13333 struct bfd_link_info *info,
13335 asection *input_section,
13336 bfd_byte *contents,
13337 Elf_Internal_Rela *relocs,
13338 Elf_Internal_Sym *local_syms,
13339 asection **local_sections)
13341 struct ppc_link_hash_table *htab;
13342 Elf_Internal_Shdr *symtab_hdr;
13343 struct elf_link_hash_entry **sym_hashes;
13344 Elf_Internal_Rela *rel;
13345 Elf_Internal_Rela *wrel;
13346 Elf_Internal_Rela *relend;
13347 Elf_Internal_Rela outrel;
13349 struct got_entry **local_got_ents;
13351 bfd_boolean ret = TRUE;
13352 bfd_boolean is_opd;
13353 /* Assume 'at' branch hints. */
13354 bfd_boolean is_isa_v2 = TRUE;
13355 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
13357 /* Initialize howto table if needed. */
13358 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13361 htab = ppc_hash_table (info);
13365 /* Don't relocate stub sections. */
13366 if (input_section->owner == htab->params->stub_bfd)
13369 BFD_ASSERT (is_ppc64_elf (input_bfd));
13371 local_got_ents = elf_local_got_ents (input_bfd);
13372 TOCstart = elf_gp (output_bfd);
13373 symtab_hdr = &elf_symtab_hdr (input_bfd);
13374 sym_hashes = elf_sym_hashes (input_bfd);
13375 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13377 rel = wrel = relocs;
13378 relend = relocs + input_section->reloc_count;
13379 for (; rel < relend; wrel++, rel++)
13381 enum elf_ppc64_reloc_type r_type;
13383 bfd_reloc_status_type r;
13384 Elf_Internal_Sym *sym;
13386 struct elf_link_hash_entry *h_elf;
13387 struct ppc_link_hash_entry *h;
13388 struct ppc_link_hash_entry *fdh;
13389 const char *sym_name;
13390 unsigned long r_symndx, toc_symndx;
13391 bfd_vma toc_addend;
13392 unsigned char tls_mask, tls_gd, tls_type;
13393 unsigned char sym_type;
13394 bfd_vma relocation;
13395 bfd_boolean unresolved_reloc;
13396 bfd_boolean warned;
13397 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13400 struct ppc_stub_hash_entry *stub_entry;
13401 bfd_vma max_br_offset;
13403 Elf_Internal_Rela orig_rel;
13404 reloc_howto_type *howto;
13405 struct reloc_howto_struct alt_howto;
13410 r_type = ELF64_R_TYPE (rel->r_info);
13411 r_symndx = ELF64_R_SYM (rel->r_info);
13413 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13414 symbol of the previous ADDR64 reloc. The symbol gives us the
13415 proper TOC base to use. */
13416 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13418 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13420 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13426 unresolved_reloc = FALSE;
13429 if (r_symndx < symtab_hdr->sh_info)
13431 /* It's a local symbol. */
13432 struct _opd_sec_data *opd;
13434 sym = local_syms + r_symndx;
13435 sec = local_sections[r_symndx];
13436 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13437 sym_type = ELF64_ST_TYPE (sym->st_info);
13438 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13439 opd = get_opd_info (sec);
13440 if (opd != NULL && opd->adjust != NULL)
13442 long adjust = opd->adjust[OPD_NDX (sym->st_value
13448 /* If this is a relocation against the opd section sym
13449 and we have edited .opd, adjust the reloc addend so
13450 that ld -r and ld --emit-relocs output is correct.
13451 If it is a reloc against some other .opd symbol,
13452 then the symbol value will be adjusted later. */
13453 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13454 rel->r_addend += adjust;
13456 relocation += adjust;
13462 bfd_boolean ignored;
13464 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13465 r_symndx, symtab_hdr, sym_hashes,
13466 h_elf, sec, relocation,
13467 unresolved_reloc, warned, ignored);
13468 sym_name = h_elf->root.root.string;
13469 sym_type = h_elf->type;
13471 && sec->owner == output_bfd
13472 && strcmp (sec->name, ".opd") == 0)
13474 /* This is a symbol defined in a linker script. All
13475 such are defined in output sections, even those
13476 defined by simple assignment from a symbol defined in
13477 an input section. Transfer the symbol to an
13478 appropriate input .opd section, so that a branch to
13479 this symbol will be mapped to the location specified
13480 by the opd entry. */
13481 struct bfd_link_order *lo;
13482 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13483 if (lo->type == bfd_indirect_link_order)
13485 asection *isec = lo->u.indirect.section;
13486 if (h_elf->root.u.def.value >= isec->output_offset
13487 && h_elf->root.u.def.value < (isec->output_offset
13490 h_elf->root.u.def.value -= isec->output_offset;
13491 h_elf->root.u.def.section = isec;
13498 h = (struct ppc_link_hash_entry *) h_elf;
13500 if (sec != NULL && discarded_section (sec))
13502 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13503 input_bfd, input_section,
13504 contents + rel->r_offset);
13505 wrel->r_offset = rel->r_offset;
13507 wrel->r_addend = 0;
13509 /* For ld -r, remove relocations in debug sections against
13510 sections defined in discarded sections. Not done for
13511 non-debug to preserve relocs in .eh_frame which the
13512 eh_frame editing code expects to be present. */
13513 if (bfd_link_relocatable (info)
13514 && (input_section->flags & SEC_DEBUGGING))
13520 if (bfd_link_relocatable (info))
13523 if (h != NULL && &h->elf == htab->elf.hgot)
13525 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13526 sec = bfd_abs_section_ptr;
13527 unresolved_reloc = FALSE;
13530 /* TLS optimizations. Replace instruction sequences and relocs
13531 based on information we collected in tls_optimize. We edit
13532 RELOCS so that --emit-relocs will output something sensible
13533 for the final instruction stream. */
13538 tls_mask = h->tls_mask;
13539 else if (local_got_ents != NULL)
13541 struct plt_entry **local_plt = (struct plt_entry **)
13542 (local_got_ents + symtab_hdr->sh_info);
13543 unsigned char *lgot_masks = (unsigned char *)
13544 (local_plt + symtab_hdr->sh_info);
13545 tls_mask = lgot_masks[r_symndx];
13548 && (r_type == R_PPC64_TLS
13549 || r_type == R_PPC64_TLSGD
13550 || r_type == R_PPC64_TLSLD))
13552 /* Check for toc tls entries. */
13553 unsigned char *toc_tls;
13555 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13556 &local_syms, rel, input_bfd))
13560 tls_mask = *toc_tls;
13563 /* Check that tls relocs are used with tls syms, and non-tls
13564 relocs are used with non-tls syms. */
13565 if (r_symndx != STN_UNDEF
13566 && r_type != R_PPC64_NONE
13568 || h->elf.root.type == bfd_link_hash_defined
13569 || h->elf.root.type == bfd_link_hash_defweak)
13570 && (IS_PPC64_TLS_RELOC (r_type)
13571 != (sym_type == STT_TLS
13572 || (sym_type == STT_SECTION
13573 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13576 && (r_type == R_PPC64_TLS
13577 || r_type == R_PPC64_TLSGD
13578 || r_type == R_PPC64_TLSLD))
13579 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13582 info->callbacks->einfo
13583 (!IS_PPC64_TLS_RELOC (r_type)
13584 /* xgettext:c-format */
13585 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13586 /* xgettext:c-format */
13587 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13588 input_bfd, input_section, rel->r_offset,
13589 ppc64_elf_howto_table[r_type]->name,
13593 /* Ensure reloc mapping code below stays sane. */
13594 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13595 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13596 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13597 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13598 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13599 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13600 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13601 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13602 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13603 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13611 case R_PPC64_LO_DS_OPT:
13612 insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset);
13613 if ((insn & (0x3f << 26)) != 58u << 26)
13615 insn += (14u << 26) - (58u << 26);
13616 bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset);
13617 r_type = R_PPC64_TOC16_LO;
13618 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13621 case R_PPC64_TOC16:
13622 case R_PPC64_TOC16_LO:
13623 case R_PPC64_TOC16_DS:
13624 case R_PPC64_TOC16_LO_DS:
13626 /* Check for toc tls entries. */
13627 unsigned char *toc_tls;
13630 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13631 &local_syms, rel, input_bfd);
13637 tls_mask = *toc_tls;
13638 if (r_type == R_PPC64_TOC16_DS
13639 || r_type == R_PPC64_TOC16_LO_DS)
13642 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13647 /* If we found a GD reloc pair, then we might be
13648 doing a GD->IE transition. */
13651 tls_gd = TLS_TPRELGD;
13652 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13655 else if (retval == 3)
13657 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13665 case R_PPC64_GOT_TPREL16_HI:
13666 case R_PPC64_GOT_TPREL16_HA:
13668 && (tls_mask & TLS_TPREL) == 0)
13670 rel->r_offset -= d_offset;
13671 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13672 r_type = R_PPC64_NONE;
13673 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13677 case R_PPC64_GOT_TPREL16_DS:
13678 case R_PPC64_GOT_TPREL16_LO_DS:
13680 && (tls_mask & TLS_TPREL) == 0)
13683 insn = bfd_get_32 (input_bfd,
13684 contents + rel->r_offset - d_offset);
13686 insn |= 0x3c0d0000; /* addis 0,13,0 */
13687 bfd_put_32 (input_bfd, insn,
13688 contents + rel->r_offset - d_offset);
13689 r_type = R_PPC64_TPREL16_HA;
13690 if (toc_symndx != 0)
13692 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13693 rel->r_addend = toc_addend;
13694 /* We changed the symbol. Start over in order to
13695 get h, sym, sec etc. right. */
13699 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13705 && (tls_mask & TLS_TPREL) == 0)
13707 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13708 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13711 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
13712 /* Was PPC64_TLS which sits on insn boundary, now
13713 PPC64_TPREL16_LO which is at low-order half-word. */
13714 rel->r_offset += d_offset;
13715 r_type = R_PPC64_TPREL16_LO;
13716 if (toc_symndx != 0)
13718 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13719 rel->r_addend = toc_addend;
13720 /* We changed the symbol. Start over in order to
13721 get h, sym, sec etc. right. */
13725 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13729 case R_PPC64_GOT_TLSGD16_HI:
13730 case R_PPC64_GOT_TLSGD16_HA:
13731 tls_gd = TLS_TPRELGD;
13732 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13736 case R_PPC64_GOT_TLSLD16_HI:
13737 case R_PPC64_GOT_TLSLD16_HA:
13738 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13741 if ((tls_mask & tls_gd) != 0)
13742 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13743 + R_PPC64_GOT_TPREL16_DS);
13746 rel->r_offset -= d_offset;
13747 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13748 r_type = R_PPC64_NONE;
13750 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13754 case R_PPC64_GOT_TLSGD16:
13755 case R_PPC64_GOT_TLSGD16_LO:
13756 tls_gd = TLS_TPRELGD;
13757 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13761 case R_PPC64_GOT_TLSLD16:
13762 case R_PPC64_GOT_TLSLD16_LO:
13763 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13765 unsigned int insn1, insn2, insn3;
13769 offset = (bfd_vma) -1;
13770 /* If not using the newer R_PPC64_TLSGD/LD to mark
13771 __tls_get_addr calls, we must trust that the call
13772 stays with its arg setup insns, ie. that the next
13773 reloc is the __tls_get_addr call associated with
13774 the current reloc. Edit both insns. */
13775 if (input_section->has_tls_get_addr_call
13776 && rel + 1 < relend
13777 && branch_reloc_hash_match (input_bfd, rel + 1,
13778 htab->tls_get_addr,
13779 htab->tls_get_addr_fd))
13780 offset = rel[1].r_offset;
13781 /* We read the low GOT_TLS (or TOC16) insn because we
13782 need to keep the destination reg. It may be
13783 something other than the usual r3, and moved to r3
13784 before the call by intervening code. */
13785 insn1 = bfd_get_32 (input_bfd,
13786 contents + rel->r_offset - d_offset);
13787 if ((tls_mask & tls_gd) != 0)
13790 insn1 &= (0x1f << 21) | (0x1f << 16);
13791 insn1 |= 58 << 26; /* ld */
13792 insn2 = 0x7c636a14; /* add 3,3,13 */
13793 if (offset != (bfd_vma) -1)
13794 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13795 if ((tls_mask & TLS_EXPLICIT) == 0)
13796 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13797 + R_PPC64_GOT_TPREL16_DS);
13799 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13800 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13805 insn1 &= 0x1f << 21;
13806 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13807 insn2 = 0x38630000; /* addi 3,3,0 */
13810 /* Was an LD reloc. */
13812 sec = local_sections[toc_symndx];
13814 r_symndx < symtab_hdr->sh_info;
13816 if (local_sections[r_symndx] == sec)
13818 if (r_symndx >= symtab_hdr->sh_info)
13819 r_symndx = STN_UNDEF;
13820 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13821 if (r_symndx != STN_UNDEF)
13822 rel->r_addend -= (local_syms[r_symndx].st_value
13823 + sec->output_offset
13824 + sec->output_section->vma);
13826 else if (toc_symndx != 0)
13828 r_symndx = toc_symndx;
13829 rel->r_addend = toc_addend;
13831 r_type = R_PPC64_TPREL16_HA;
13832 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13833 if (offset != (bfd_vma) -1)
13835 rel[1].r_info = ELF64_R_INFO (r_symndx,
13836 R_PPC64_TPREL16_LO);
13837 rel[1].r_offset = offset + d_offset;
13838 rel[1].r_addend = rel->r_addend;
13841 bfd_put_32 (input_bfd, insn1,
13842 contents + rel->r_offset - d_offset);
13843 if (offset != (bfd_vma) -1)
13845 insn3 = bfd_get_32 (input_bfd,
13846 contents + offset + 4);
13848 || insn3 == CROR_151515 || insn3 == CROR_313131)
13850 rel[1].r_offset += 4;
13851 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
13854 bfd_put_32 (input_bfd, insn2, contents + offset);
13856 if ((tls_mask & tls_gd) == 0
13857 && (tls_gd == 0 || toc_symndx != 0))
13859 /* We changed the symbol. Start over in order
13860 to get h, sym, sec etc. right. */
13866 case R_PPC64_TLSGD:
13867 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13869 unsigned int insn2, insn3;
13870 bfd_vma offset = rel->r_offset;
13872 if ((tls_mask & TLS_TPRELGD) != 0)
13875 r_type = R_PPC64_NONE;
13876 insn2 = 0x7c636a14; /* add 3,3,13 */
13881 if (toc_symndx != 0)
13883 r_symndx = toc_symndx;
13884 rel->r_addend = toc_addend;
13886 r_type = R_PPC64_TPREL16_LO;
13887 rel->r_offset = offset + d_offset;
13888 insn2 = 0x38630000; /* addi 3,3,0 */
13890 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13891 /* Zap the reloc on the _tls_get_addr call too. */
13892 BFD_ASSERT (offset == rel[1].r_offset);
13893 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13894 insn3 = bfd_get_32 (input_bfd,
13895 contents + offset + 4);
13897 || insn3 == CROR_151515 || insn3 == CROR_313131)
13899 rel->r_offset += 4;
13900 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
13903 bfd_put_32 (input_bfd, insn2, contents + offset);
13904 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13909 case R_PPC64_TLSLD:
13910 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13912 unsigned int insn2, insn3;
13913 bfd_vma offset = rel->r_offset;
13916 sec = local_sections[toc_symndx];
13918 r_symndx < symtab_hdr->sh_info;
13920 if (local_sections[r_symndx] == sec)
13922 if (r_symndx >= symtab_hdr->sh_info)
13923 r_symndx = STN_UNDEF;
13924 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13925 if (r_symndx != STN_UNDEF)
13926 rel->r_addend -= (local_syms[r_symndx].st_value
13927 + sec->output_offset
13928 + sec->output_section->vma);
13930 r_type = R_PPC64_TPREL16_LO;
13931 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13932 rel->r_offset = offset + d_offset;
13933 /* Zap the reloc on the _tls_get_addr call too. */
13934 BFD_ASSERT (offset == rel[1].r_offset);
13935 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13936 insn2 = 0x38630000; /* addi 3,3,0 */
13937 insn3 = bfd_get_32 (input_bfd,
13938 contents + offset + 4);
13940 || insn3 == CROR_151515 || insn3 == CROR_313131)
13942 rel->r_offset += 4;
13943 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
13946 bfd_put_32 (input_bfd, insn2, contents + offset);
13951 case R_PPC64_DTPMOD64:
13952 if (rel + 1 < relend
13953 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13954 && rel[1].r_offset == rel->r_offset + 8)
13956 if ((tls_mask & TLS_GD) == 0)
13958 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13959 if ((tls_mask & TLS_TPRELGD) != 0)
13960 r_type = R_PPC64_TPREL64;
13963 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13964 r_type = R_PPC64_NONE;
13966 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13971 if ((tls_mask & TLS_LD) == 0)
13973 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13974 r_type = R_PPC64_NONE;
13975 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13980 case R_PPC64_TPREL64:
13981 if ((tls_mask & TLS_TPREL) == 0)
13983 r_type = R_PPC64_NONE;
13984 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13988 case R_PPC64_ENTRY:
13989 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13990 if (!bfd_link_pic (info)
13991 && !info->traditional_format
13992 && relocation + 0x80008000 <= 0xffffffff)
13994 unsigned int insn1, insn2;
13996 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13997 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13998 if ((insn1 & ~0xfffc) == LD_R2_0R12
13999 && insn2 == ADD_R2_R2_R12)
14001 bfd_put_32 (input_bfd,
14002 LIS_R2 + PPC_HA (relocation),
14003 contents + rel->r_offset);
14004 bfd_put_32 (input_bfd,
14005 ADDI_R2_R2 + PPC_LO (relocation),
14006 contents + rel->r_offset + 4);
14011 relocation -= (rel->r_offset
14012 + input_section->output_offset
14013 + input_section->output_section->vma);
14014 if (relocation + 0x80008000 <= 0xffffffff)
14016 unsigned int insn1, insn2;
14018 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14019 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14020 if ((insn1 & ~0xfffc) == LD_R2_0R12
14021 && insn2 == ADD_R2_R2_R12)
14023 bfd_put_32 (input_bfd,
14024 ADDIS_R2_R12 + PPC_HA (relocation),
14025 contents + rel->r_offset);
14026 bfd_put_32 (input_bfd,
14027 ADDI_R2_R2 + PPC_LO (relocation),
14028 contents + rel->r_offset + 4);
14034 case R_PPC64_REL16_HA:
14035 /* If we are generating a non-PIC executable, edit
14036 . 0: addis 2,12,.TOC.-0b@ha
14037 . addi 2,2,.TOC.-0b@l
14038 used by ELFv2 global entry points to set up r2, to
14041 if .TOC. is in range. */
14042 if (!bfd_link_pic (info)
14043 && !info->traditional_format
14045 && rel->r_addend == d_offset
14046 && h != NULL && &h->elf == htab->elf.hgot
14047 && rel + 1 < relend
14048 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14049 && rel[1].r_offset == rel->r_offset + 4
14050 && rel[1].r_addend == rel->r_addend + 4
14051 && relocation + 0x80008000 <= 0xffffffff)
14053 unsigned int insn1, insn2;
14054 bfd_vma offset = rel->r_offset - d_offset;
14055 insn1 = bfd_get_32 (input_bfd, contents + offset);
14056 insn2 = bfd_get_32 (input_bfd, contents + offset + 4);
14057 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14058 && (insn2 & 0xffff0000) == ADDI_R2_R2)
14060 r_type = R_PPC64_ADDR16_HA;
14061 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14062 rel->r_addend -= d_offset;
14063 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14064 rel[1].r_addend -= d_offset + 4;
14065 bfd_put_32 (input_bfd, LIS_R2, contents + offset);
14071 /* Handle other relocations that tweak non-addend part of insn. */
14073 max_br_offset = 1 << 25;
14074 addend = rel->r_addend;
14075 reloc_dest = DEST_NORMAL;
14081 case R_PPC64_TOCSAVE:
14082 if (relocation + addend == (rel->r_offset
14083 + input_section->output_offset
14084 + input_section->output_section->vma)
14085 && tocsave_find (htab, NO_INSERT,
14086 &local_syms, rel, input_bfd))
14088 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14090 || insn == CROR_151515 || insn == CROR_313131)
14091 bfd_put_32 (input_bfd,
14092 STD_R2_0R1 + STK_TOC (htab),
14093 contents + rel->r_offset);
14097 /* Branch taken prediction relocations. */
14098 case R_PPC64_ADDR14_BRTAKEN:
14099 case R_PPC64_REL14_BRTAKEN:
14100 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14101 /* Fall through. */
14103 /* Branch not taken prediction relocations. */
14104 case R_PPC64_ADDR14_BRNTAKEN:
14105 case R_PPC64_REL14_BRNTAKEN:
14106 insn |= bfd_get_32 (input_bfd,
14107 contents + rel->r_offset) & ~(0x01 << 21);
14108 /* Fall through. */
14110 case R_PPC64_REL14:
14111 max_br_offset = 1 << 15;
14112 /* Fall through. */
14114 case R_PPC64_REL24:
14115 /* Calls to functions with a different TOC, such as calls to
14116 shared objects, need to alter the TOC pointer. This is
14117 done using a linkage stub. A REL24 branching to these
14118 linkage stubs needs to be followed by a nop, as the nop
14119 will be replaced with an instruction to restore the TOC
14124 && h->oh->is_func_descriptor)
14125 fdh = ppc_follow_link (h->oh);
14126 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14128 if (stub_entry != NULL
14129 && (stub_entry->stub_type == ppc_stub_plt_call
14130 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14131 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14132 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14134 bfd_boolean can_plt_call = FALSE;
14136 /* All of these stubs will modify r2, so there must be a
14137 branch and link followed by a nop. The nop is
14138 replaced by an insn to restore r2. */
14139 if (rel->r_offset + 8 <= input_section->size)
14143 br = bfd_get_32 (input_bfd,
14144 contents + rel->r_offset);
14149 nop = bfd_get_32 (input_bfd,
14150 contents + rel->r_offset + 4);
14152 || nop == CROR_151515 || nop == CROR_313131)
14155 && (h == htab->tls_get_addr_fd
14156 || h == htab->tls_get_addr)
14157 && htab->params->tls_get_addr_opt)
14159 /* Special stub used, leave nop alone. */
14162 bfd_put_32 (input_bfd,
14163 LD_R2_0R1 + STK_TOC (htab),
14164 contents + rel->r_offset + 4);
14165 can_plt_call = TRUE;
14170 if (!can_plt_call && h != NULL)
14172 const char *name = h->elf.root.root.string;
14177 if (strncmp (name, "__libc_start_main", 17) == 0
14178 && (name[17] == 0 || name[17] == '@'))
14180 /* Allow crt1 branch to go via a toc adjusting
14181 stub. Other calls that never return could do
14182 the same, if we could detect such. */
14183 can_plt_call = TRUE;
14189 /* g++ as of 20130507 emits self-calls without a
14190 following nop. This is arguably wrong since we
14191 have conflicting information. On the one hand a
14192 global symbol and on the other a local call
14193 sequence, but don't error for this special case.
14194 It isn't possible to cheaply verify we have
14195 exactly such a call. Allow all calls to the same
14197 asection *code_sec = sec;
14199 if (get_opd_info (sec) != NULL)
14201 bfd_vma off = (relocation + addend
14202 - sec->output_section->vma
14203 - sec->output_offset);
14205 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14207 if (code_sec == input_section)
14208 can_plt_call = TRUE;
14213 if (stub_entry->stub_type == ppc_stub_plt_call
14214 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14215 info->callbacks->einfo
14216 /* xgettext:c-format */
14217 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14218 "recompile with -fPIC\n"),
14219 input_bfd, input_section, rel->r_offset, sym_name);
14221 info->callbacks->einfo
14222 /* xgettext:c-format */
14223 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14224 "(-mcmodel=small toc adjust stub)\n"),
14225 input_bfd, input_section, rel->r_offset, sym_name);
14227 bfd_set_error (bfd_error_bad_value);
14232 && (stub_entry->stub_type == ppc_stub_plt_call
14233 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14234 unresolved_reloc = FALSE;
14237 if ((stub_entry == NULL
14238 || stub_entry->stub_type == ppc_stub_long_branch
14239 || stub_entry->stub_type == ppc_stub_plt_branch)
14240 && get_opd_info (sec) != NULL)
14242 /* The branch destination is the value of the opd entry. */
14243 bfd_vma off = (relocation + addend
14244 - sec->output_section->vma
14245 - sec->output_offset);
14246 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14247 if (dest != (bfd_vma) -1)
14251 reloc_dest = DEST_OPD;
14255 /* If the branch is out of reach we ought to have a long
14257 from = (rel->r_offset
14258 + input_section->output_offset
14259 + input_section->output_section->vma);
14261 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14265 if (stub_entry != NULL
14266 && (stub_entry->stub_type == ppc_stub_long_branch
14267 || stub_entry->stub_type == ppc_stub_plt_branch)
14268 && (r_type == R_PPC64_ADDR14_BRTAKEN
14269 || r_type == R_PPC64_ADDR14_BRNTAKEN
14270 || (relocation + addend - from + max_br_offset
14271 < 2 * max_br_offset)))
14272 /* Don't use the stub if this branch is in range. */
14275 if (stub_entry != NULL)
14277 /* Munge up the value and addend so that we call the stub
14278 rather than the procedure directly. */
14279 asection *stub_sec = stub_entry->group->stub_sec;
14281 if (stub_entry->stub_type == ppc_stub_save_res)
14282 relocation += (stub_sec->output_offset
14283 + stub_sec->output_section->vma
14284 + stub_sec->size - htab->sfpr->size
14285 - htab->sfpr->output_offset
14286 - htab->sfpr->output_section->vma);
14288 relocation = (stub_entry->stub_offset
14289 + stub_sec->output_offset
14290 + stub_sec->output_section->vma);
14292 reloc_dest = DEST_STUB;
14294 if ((stub_entry->stub_type == ppc_stub_plt_call
14295 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14296 && (ALWAYS_EMIT_R2SAVE
14297 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14298 && rel + 1 < relend
14299 && rel[1].r_offset == rel->r_offset + 4
14300 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14308 /* Set 'a' bit. This is 0b00010 in BO field for branch
14309 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14310 for branch on CTR insns (BO == 1a00t or 1a01t). */
14311 if ((insn & (0x14 << 21)) == (0x04 << 21))
14312 insn |= 0x02 << 21;
14313 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14314 insn |= 0x08 << 21;
14320 /* Invert 'y' bit if not the default. */
14321 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14322 insn ^= 0x01 << 21;
14325 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14328 /* NOP out calls to undefined weak functions.
14329 We can thus call a weak function without first
14330 checking whether the function is defined. */
14332 && h->elf.root.type == bfd_link_hash_undefweak
14333 && h->elf.dynindx == -1
14334 && r_type == R_PPC64_REL24
14338 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14344 /* Set `addend'. */
14349 info->callbacks->einfo
14350 /* xgettext:c-format */
14351 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14352 input_bfd, (int) r_type, sym_name);
14354 bfd_set_error (bfd_error_bad_value);
14360 case R_PPC64_TLSGD:
14361 case R_PPC64_TLSLD:
14362 case R_PPC64_TOCSAVE:
14363 case R_PPC64_GNU_VTINHERIT:
14364 case R_PPC64_GNU_VTENTRY:
14365 case R_PPC64_ENTRY:
14368 /* GOT16 relocations. Like an ADDR16 using the symbol's
14369 address in the GOT as relocation value instead of the
14370 symbol's value itself. Also, create a GOT entry for the
14371 symbol and put the symbol value there. */
14372 case R_PPC64_GOT_TLSGD16:
14373 case R_PPC64_GOT_TLSGD16_LO:
14374 case R_PPC64_GOT_TLSGD16_HI:
14375 case R_PPC64_GOT_TLSGD16_HA:
14376 tls_type = TLS_TLS | TLS_GD;
14379 case R_PPC64_GOT_TLSLD16:
14380 case R_PPC64_GOT_TLSLD16_LO:
14381 case R_PPC64_GOT_TLSLD16_HI:
14382 case R_PPC64_GOT_TLSLD16_HA:
14383 tls_type = TLS_TLS | TLS_LD;
14386 case R_PPC64_GOT_TPREL16_DS:
14387 case R_PPC64_GOT_TPREL16_LO_DS:
14388 case R_PPC64_GOT_TPREL16_HI:
14389 case R_PPC64_GOT_TPREL16_HA:
14390 tls_type = TLS_TLS | TLS_TPREL;
14393 case R_PPC64_GOT_DTPREL16_DS:
14394 case R_PPC64_GOT_DTPREL16_LO_DS:
14395 case R_PPC64_GOT_DTPREL16_HI:
14396 case R_PPC64_GOT_DTPREL16_HA:
14397 tls_type = TLS_TLS | TLS_DTPREL;
14400 case R_PPC64_GOT16:
14401 case R_PPC64_GOT16_LO:
14402 case R_PPC64_GOT16_HI:
14403 case R_PPC64_GOT16_HA:
14404 case R_PPC64_GOT16_DS:
14405 case R_PPC64_GOT16_LO_DS:
14408 /* Relocation is to the entry for this symbol in the global
14413 unsigned long indx = 0;
14414 struct got_entry *ent;
14416 if (tls_type == (TLS_TLS | TLS_LD)
14418 || !h->elf.def_dynamic))
14419 ent = ppc64_tlsld_got (input_bfd);
14425 bfd_boolean dyn = htab->elf.dynamic_sections_created;
14426 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info),
14428 || (bfd_link_pic (info)
14429 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
14430 /* This is actually a static link, or it is a
14431 -Bsymbolic link and the symbol is defined
14432 locally, or the symbol was forced to be local
14433 because of a version file. */
14437 BFD_ASSERT (h->elf.dynindx != -1);
14438 indx = h->elf.dynindx;
14439 unresolved_reloc = FALSE;
14441 ent = h->elf.got.glist;
14445 if (local_got_ents == NULL)
14447 ent = local_got_ents[r_symndx];
14450 for (; ent != NULL; ent = ent->next)
14451 if (ent->addend == orig_rel.r_addend
14452 && ent->owner == input_bfd
14453 && ent->tls_type == tls_type)
14459 if (ent->is_indirect)
14460 ent = ent->got.ent;
14461 offp = &ent->got.offset;
14462 got = ppc64_elf_tdata (ent->owner)->got;
14466 /* The offset must always be a multiple of 8. We use the
14467 least significant bit to record whether we have already
14468 processed this entry. */
14470 if ((off & 1) != 0)
14474 /* Generate relocs for the dynamic linker, except in
14475 the case of TLSLD where we'll use one entry per
14483 ? h->elf.type == STT_GNU_IFUNC
14484 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14486 relgot = htab->elf.irelplt;
14487 else if ((bfd_link_pic (info) || indx != 0)
14489 || (tls_type == (TLS_TLS | TLS_LD)
14490 && !h->elf.def_dynamic)
14491 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14492 || h->elf.root.type != bfd_link_hash_undefweak))
14493 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14494 if (relgot != NULL)
14496 outrel.r_offset = (got->output_section->vma
14497 + got->output_offset
14499 outrel.r_addend = addend;
14500 if (tls_type & (TLS_LD | TLS_GD))
14502 outrel.r_addend = 0;
14503 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14504 if (tls_type == (TLS_TLS | TLS_GD))
14506 loc = relgot->contents;
14507 loc += (relgot->reloc_count++
14508 * sizeof (Elf64_External_Rela));
14509 bfd_elf64_swap_reloca_out (output_bfd,
14511 outrel.r_offset += 8;
14512 outrel.r_addend = addend;
14514 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14517 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14518 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14519 else if (tls_type == (TLS_TLS | TLS_TPREL))
14520 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14521 else if (indx != 0)
14522 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14526 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14528 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14530 /* Write the .got section contents for the sake
14532 loc = got->contents + off;
14533 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14537 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14539 outrel.r_addend += relocation;
14540 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14542 if (htab->elf.tls_sec == NULL)
14543 outrel.r_addend = 0;
14545 outrel.r_addend -= htab->elf.tls_sec->vma;
14548 loc = relgot->contents;
14549 loc += (relgot->reloc_count++
14550 * sizeof (Elf64_External_Rela));
14551 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14554 /* Init the .got section contents here if we're not
14555 emitting a reloc. */
14558 relocation += addend;
14559 if (tls_type == (TLS_TLS | TLS_LD))
14561 else if (tls_type != 0)
14563 if (htab->elf.tls_sec == NULL)
14567 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14568 if (tls_type == (TLS_TLS | TLS_TPREL))
14569 relocation += DTP_OFFSET - TP_OFFSET;
14572 if (tls_type == (TLS_TLS | TLS_GD))
14574 bfd_put_64 (output_bfd, relocation,
14575 got->contents + off + 8);
14580 bfd_put_64 (output_bfd, relocation,
14581 got->contents + off);
14585 if (off >= (bfd_vma) -2)
14588 relocation = got->output_section->vma + got->output_offset + off;
14589 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14593 case R_PPC64_PLT16_HA:
14594 case R_PPC64_PLT16_HI:
14595 case R_PPC64_PLT16_LO:
14596 case R_PPC64_PLT32:
14597 case R_PPC64_PLT64:
14598 /* Relocation is to the entry for this symbol in the
14599 procedure linkage table. */
14601 struct plt_entry **plt_list = NULL;
14603 plt_list = &h->elf.plt.plist;
14604 else if (local_got_ents != NULL)
14606 struct plt_entry **local_plt = (struct plt_entry **)
14607 (local_got_ents + symtab_hdr->sh_info);
14608 unsigned char *local_got_tls_masks = (unsigned char *)
14609 (local_plt + symtab_hdr->sh_info);
14610 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14611 plt_list = local_plt + r_symndx;
14615 struct plt_entry *ent;
14617 for (ent = *plt_list; ent != NULL; ent = ent->next)
14618 if (ent->plt.offset != (bfd_vma) -1
14619 && ent->addend == orig_rel.r_addend)
14623 plt = htab->elf.splt;
14624 if (!htab->elf.dynamic_sections_created
14626 || h->elf.dynindx == -1)
14627 plt = htab->elf.iplt;
14628 relocation = (plt->output_section->vma
14629 + plt->output_offset
14630 + ent->plt.offset);
14632 unresolved_reloc = FALSE;
14640 /* Relocation value is TOC base. */
14641 relocation = TOCstart;
14642 if (r_symndx == STN_UNDEF)
14643 relocation += htab->sec_info[input_section->id].toc_off;
14644 else if (unresolved_reloc)
14646 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14647 relocation += htab->sec_info[sec->id].toc_off;
14649 unresolved_reloc = TRUE;
14652 /* TOC16 relocs. We want the offset relative to the TOC base,
14653 which is the address of the start of the TOC plus 0x8000.
14654 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14656 case R_PPC64_TOC16:
14657 case R_PPC64_TOC16_LO:
14658 case R_PPC64_TOC16_HI:
14659 case R_PPC64_TOC16_DS:
14660 case R_PPC64_TOC16_LO_DS:
14661 case R_PPC64_TOC16_HA:
14662 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14665 /* Relocate against the beginning of the section. */
14666 case R_PPC64_SECTOFF:
14667 case R_PPC64_SECTOFF_LO:
14668 case R_PPC64_SECTOFF_HI:
14669 case R_PPC64_SECTOFF_DS:
14670 case R_PPC64_SECTOFF_LO_DS:
14671 case R_PPC64_SECTOFF_HA:
14673 addend -= sec->output_section->vma;
14676 case R_PPC64_REL16:
14677 case R_PPC64_REL16_LO:
14678 case R_PPC64_REL16_HI:
14679 case R_PPC64_REL16_HA:
14680 case R_PPC64_REL16DX_HA:
14683 case R_PPC64_REL14:
14684 case R_PPC64_REL14_BRNTAKEN:
14685 case R_PPC64_REL14_BRTAKEN:
14686 case R_PPC64_REL24:
14689 case R_PPC64_TPREL16:
14690 case R_PPC64_TPREL16_LO:
14691 case R_PPC64_TPREL16_HI:
14692 case R_PPC64_TPREL16_HA:
14693 case R_PPC64_TPREL16_DS:
14694 case R_PPC64_TPREL16_LO_DS:
14695 case R_PPC64_TPREL16_HIGH:
14696 case R_PPC64_TPREL16_HIGHA:
14697 case R_PPC64_TPREL16_HIGHER:
14698 case R_PPC64_TPREL16_HIGHERA:
14699 case R_PPC64_TPREL16_HIGHEST:
14700 case R_PPC64_TPREL16_HIGHESTA:
14702 && h->elf.root.type == bfd_link_hash_undefweak
14703 && h->elf.dynindx == -1)
14705 /* Make this relocation against an undefined weak symbol
14706 resolve to zero. This is really just a tweak, since
14707 code using weak externs ought to check that they are
14708 defined before using them. */
14709 bfd_byte *p = contents + rel->r_offset - d_offset;
14711 insn = bfd_get_32 (input_bfd, p);
14712 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14714 bfd_put_32 (input_bfd, insn, p);
14717 if (htab->elf.tls_sec != NULL)
14718 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14719 if (bfd_link_pic (info))
14720 /* The TPREL16 relocs shouldn't really be used in shared
14721 libs as they will result in DT_TEXTREL being set, but
14722 support them anyway. */
14726 case R_PPC64_DTPREL16:
14727 case R_PPC64_DTPREL16_LO:
14728 case R_PPC64_DTPREL16_HI:
14729 case R_PPC64_DTPREL16_HA:
14730 case R_PPC64_DTPREL16_DS:
14731 case R_PPC64_DTPREL16_LO_DS:
14732 case R_PPC64_DTPREL16_HIGH:
14733 case R_PPC64_DTPREL16_HIGHA:
14734 case R_PPC64_DTPREL16_HIGHER:
14735 case R_PPC64_DTPREL16_HIGHERA:
14736 case R_PPC64_DTPREL16_HIGHEST:
14737 case R_PPC64_DTPREL16_HIGHESTA:
14738 if (htab->elf.tls_sec != NULL)
14739 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14742 case R_PPC64_ADDR64_LOCAL:
14743 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14748 case R_PPC64_DTPMOD64:
14753 case R_PPC64_TPREL64:
14754 if (htab->elf.tls_sec != NULL)
14755 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14758 case R_PPC64_DTPREL64:
14759 if (htab->elf.tls_sec != NULL)
14760 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14761 /* Fall through. */
14763 /* Relocations that may need to be propagated if this is a
14765 case R_PPC64_REL30:
14766 case R_PPC64_REL32:
14767 case R_PPC64_REL64:
14768 case R_PPC64_ADDR14:
14769 case R_PPC64_ADDR14_BRNTAKEN:
14770 case R_PPC64_ADDR14_BRTAKEN:
14771 case R_PPC64_ADDR16:
14772 case R_PPC64_ADDR16_DS:
14773 case R_PPC64_ADDR16_HA:
14774 case R_PPC64_ADDR16_HI:
14775 case R_PPC64_ADDR16_HIGH:
14776 case R_PPC64_ADDR16_HIGHA:
14777 case R_PPC64_ADDR16_HIGHER:
14778 case R_PPC64_ADDR16_HIGHERA:
14779 case R_PPC64_ADDR16_HIGHEST:
14780 case R_PPC64_ADDR16_HIGHESTA:
14781 case R_PPC64_ADDR16_LO:
14782 case R_PPC64_ADDR16_LO_DS:
14783 case R_PPC64_ADDR24:
14784 case R_PPC64_ADDR32:
14785 case R_PPC64_ADDR64:
14786 case R_PPC64_UADDR16:
14787 case R_PPC64_UADDR32:
14788 case R_PPC64_UADDR64:
14790 if ((input_section->flags & SEC_ALLOC) == 0)
14793 if (NO_OPD_RELOCS && is_opd)
14796 if (bfd_link_pic (info)
14797 ? ((h != NULL && pc_dynrelocs (h))
14798 || must_be_dyn_reloc (info, r_type))
14800 ? h->dyn_relocs != NULL
14801 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14803 bfd_boolean skip, relocate;
14807 /* When generating a dynamic object, these relocations
14808 are copied into the output file to be resolved at run
14814 out_off = _bfd_elf_section_offset (output_bfd, info,
14815 input_section, rel->r_offset);
14816 if (out_off == (bfd_vma) -1)
14818 else if (out_off == (bfd_vma) -2)
14819 skip = TRUE, relocate = TRUE;
14820 out_off += (input_section->output_section->vma
14821 + input_section->output_offset);
14822 outrel.r_offset = out_off;
14823 outrel.r_addend = rel->r_addend;
14825 /* Optimize unaligned reloc use. */
14826 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14827 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14828 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14829 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14830 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14831 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14832 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14833 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14834 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14837 memset (&outrel, 0, sizeof outrel);
14838 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14840 && r_type != R_PPC64_TOC)
14842 BFD_ASSERT (h->elf.dynindx != -1);
14843 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14847 /* This symbol is local, or marked to become local,
14848 or this is an opd section reloc which must point
14849 at a local function. */
14850 outrel.r_addend += relocation;
14851 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14853 if (is_opd && h != NULL)
14855 /* Lie about opd entries. This case occurs
14856 when building shared libraries and we
14857 reference a function in another shared
14858 lib. The same thing happens for a weak
14859 definition in an application that's
14860 overridden by a strong definition in a
14861 shared lib. (I believe this is a generic
14862 bug in binutils handling of weak syms.)
14863 In these cases we won't use the opd
14864 entry in this lib. */
14865 unresolved_reloc = FALSE;
14868 && r_type == R_PPC64_ADDR64
14870 ? h->elf.type == STT_GNU_IFUNC
14871 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14872 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14875 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14877 /* We need to relocate .opd contents for ld.so.
14878 Prelink also wants simple and consistent rules
14879 for relocs. This make all RELATIVE relocs have
14880 *r_offset equal to r_addend. */
14889 ? h->elf.type == STT_GNU_IFUNC
14890 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14892 info->callbacks->einfo
14893 /* xgettext:c-format */
14894 (_("%P: %H: %s for indirect "
14895 "function `%T' unsupported\n"),
14896 input_bfd, input_section, rel->r_offset,
14897 ppc64_elf_howto_table[r_type]->name,
14901 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14903 else if (sec == NULL || sec->owner == NULL)
14905 bfd_set_error (bfd_error_bad_value);
14912 osec = sec->output_section;
14913 indx = elf_section_data (osec)->dynindx;
14917 if ((osec->flags & SEC_READONLY) == 0
14918 && htab->elf.data_index_section != NULL)
14919 osec = htab->elf.data_index_section;
14921 osec = htab->elf.text_index_section;
14922 indx = elf_section_data (osec)->dynindx;
14924 BFD_ASSERT (indx != 0);
14926 /* We are turning this relocation into one
14927 against a section symbol, so subtract out
14928 the output section's address but not the
14929 offset of the input section in the output
14931 outrel.r_addend -= osec->vma;
14934 outrel.r_info = ELF64_R_INFO (indx, r_type);
14938 sreloc = elf_section_data (input_section)->sreloc;
14940 ? h->elf.type == STT_GNU_IFUNC
14941 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14942 sreloc = htab->elf.irelplt;
14943 if (sreloc == NULL)
14946 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14949 loc = sreloc->contents;
14950 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14951 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14953 /* If this reloc is against an external symbol, it will
14954 be computed at runtime, so there's no need to do
14955 anything now. However, for the sake of prelink ensure
14956 that the section contents are a known value. */
14959 unresolved_reloc = FALSE;
14960 /* The value chosen here is quite arbitrary as ld.so
14961 ignores section contents except for the special
14962 case of .opd where the contents might be accessed
14963 before relocation. Choose zero, as that won't
14964 cause reloc overflow. */
14967 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14968 to improve backward compatibility with older
14970 if (r_type == R_PPC64_ADDR64)
14971 addend = outrel.r_addend;
14972 /* Adjust pc_relative relocs to have zero in *r_offset. */
14973 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14974 addend = (input_section->output_section->vma
14975 + input_section->output_offset
14982 case R_PPC64_GLOB_DAT:
14983 case R_PPC64_JMP_SLOT:
14984 case R_PPC64_JMP_IREL:
14985 case R_PPC64_RELATIVE:
14986 /* We shouldn't ever see these dynamic relocs in relocatable
14988 /* Fall through. */
14990 case R_PPC64_PLTGOT16:
14991 case R_PPC64_PLTGOT16_DS:
14992 case R_PPC64_PLTGOT16_HA:
14993 case R_PPC64_PLTGOT16_HI:
14994 case R_PPC64_PLTGOT16_LO:
14995 case R_PPC64_PLTGOT16_LO_DS:
14996 case R_PPC64_PLTREL32:
14997 case R_PPC64_PLTREL64:
14998 /* These ones haven't been implemented yet. */
15000 info->callbacks->einfo
15001 /* xgettext:c-format */
15002 (_("%P: %B: %s is not supported for `%T'\n"),
15004 ppc64_elf_howto_table[r_type]->name, sym_name);
15006 bfd_set_error (bfd_error_invalid_operation);
15011 /* Multi-instruction sequences that access the TOC can be
15012 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15013 to nop; addi rb,r2,x; */
15019 case R_PPC64_GOT_TLSLD16_HI:
15020 case R_PPC64_GOT_TLSGD16_HI:
15021 case R_PPC64_GOT_TPREL16_HI:
15022 case R_PPC64_GOT_DTPREL16_HI:
15023 case R_PPC64_GOT16_HI:
15024 case R_PPC64_TOC16_HI:
15025 /* These relocs would only be useful if building up an
15026 offset to later add to r2, perhaps in an indexed
15027 addressing mode instruction. Don't try to optimize.
15028 Unfortunately, the possibility of someone building up an
15029 offset like this or even with the HA relocs, means that
15030 we need to check the high insn when optimizing the low
15034 case R_PPC64_GOT_TLSLD16_HA:
15035 case R_PPC64_GOT_TLSGD16_HA:
15036 case R_PPC64_GOT_TPREL16_HA:
15037 case R_PPC64_GOT_DTPREL16_HA:
15038 case R_PPC64_GOT16_HA:
15039 case R_PPC64_TOC16_HA:
15040 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15041 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15043 bfd_byte *p = contents + (rel->r_offset & ~3);
15044 bfd_put_32 (input_bfd, NOP, p);
15048 case R_PPC64_GOT_TLSLD16_LO:
15049 case R_PPC64_GOT_TLSGD16_LO:
15050 case R_PPC64_GOT_TPREL16_LO_DS:
15051 case R_PPC64_GOT_DTPREL16_LO_DS:
15052 case R_PPC64_GOT16_LO:
15053 case R_PPC64_GOT16_LO_DS:
15054 case R_PPC64_TOC16_LO:
15055 case R_PPC64_TOC16_LO_DS:
15056 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15057 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15059 bfd_byte *p = contents + (rel->r_offset & ~3);
15060 insn = bfd_get_32 (input_bfd, p);
15061 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15063 /* Transform addic to addi when we change reg. */
15064 insn &= ~((0x3f << 26) | (0x1f << 16));
15065 insn |= (14u << 26) | (2 << 16);
15069 insn &= ~(0x1f << 16);
15072 bfd_put_32 (input_bfd, insn, p);
15077 /* Do any further special processing. */
15078 howto = ppc64_elf_howto_table[(int) r_type];
15084 case R_PPC64_REL16_HA:
15085 case R_PPC64_REL16DX_HA:
15086 case R_PPC64_ADDR16_HA:
15087 case R_PPC64_ADDR16_HIGHA:
15088 case R_PPC64_ADDR16_HIGHERA:
15089 case R_PPC64_ADDR16_HIGHESTA:
15090 case R_PPC64_TOC16_HA:
15091 case R_PPC64_SECTOFF_HA:
15092 case R_PPC64_TPREL16_HA:
15093 case R_PPC64_TPREL16_HIGHA:
15094 case R_PPC64_TPREL16_HIGHERA:
15095 case R_PPC64_TPREL16_HIGHESTA:
15096 case R_PPC64_DTPREL16_HA:
15097 case R_PPC64_DTPREL16_HIGHA:
15098 case R_PPC64_DTPREL16_HIGHERA:
15099 case R_PPC64_DTPREL16_HIGHESTA:
15100 /* It's just possible that this symbol is a weak symbol
15101 that's not actually defined anywhere. In that case,
15102 'sec' would be NULL, and we should leave the symbol
15103 alone (it will be set to zero elsewhere in the link). */
15106 /* Fall through. */
15108 case R_PPC64_GOT16_HA:
15109 case R_PPC64_PLTGOT16_HA:
15110 case R_PPC64_PLT16_HA:
15111 case R_PPC64_GOT_TLSGD16_HA:
15112 case R_PPC64_GOT_TLSLD16_HA:
15113 case R_PPC64_GOT_TPREL16_HA:
15114 case R_PPC64_GOT_DTPREL16_HA:
15115 /* Add 0x10000 if sign bit in 0:15 is set.
15116 Bits 0:15 are not used. */
15120 case R_PPC64_ADDR16_DS:
15121 case R_PPC64_ADDR16_LO_DS:
15122 case R_PPC64_GOT16_DS:
15123 case R_PPC64_GOT16_LO_DS:
15124 case R_PPC64_PLT16_LO_DS:
15125 case R_PPC64_SECTOFF_DS:
15126 case R_PPC64_SECTOFF_LO_DS:
15127 case R_PPC64_TOC16_DS:
15128 case R_PPC64_TOC16_LO_DS:
15129 case R_PPC64_PLTGOT16_DS:
15130 case R_PPC64_PLTGOT16_LO_DS:
15131 case R_PPC64_GOT_TPREL16_DS:
15132 case R_PPC64_GOT_TPREL16_LO_DS:
15133 case R_PPC64_GOT_DTPREL16_DS:
15134 case R_PPC64_GOT_DTPREL16_LO_DS:
15135 case R_PPC64_TPREL16_DS:
15136 case R_PPC64_TPREL16_LO_DS:
15137 case R_PPC64_DTPREL16_DS:
15138 case R_PPC64_DTPREL16_LO_DS:
15139 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15141 /* If this reloc is against an lq, lxv, or stxv insn, then
15142 the value must be a multiple of 16. This is somewhat of
15143 a hack, but the "correct" way to do this by defining _DQ
15144 forms of all the _DS relocs bloats all reloc switches in
15145 this file. It doesn't make much sense to use these
15146 relocs in data, so testing the insn should be safe. */
15147 if ((insn & (0x3f << 26)) == (56u << 26)
15148 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15150 relocation += addend;
15151 addend = insn & (mask ^ 3);
15152 if ((relocation & mask) != 0)
15154 relocation ^= relocation & mask;
15155 info->callbacks->einfo
15156 /* xgettext:c-format */
15157 (_("%P: %H: error: %s not a multiple of %u\n"),
15158 input_bfd, input_section, rel->r_offset,
15161 bfd_set_error (bfd_error_bad_value);
15168 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15169 because such sections are not SEC_ALLOC and thus ld.so will
15170 not process them. */
15171 if (unresolved_reloc
15172 && !((input_section->flags & SEC_DEBUGGING) != 0
15173 && h->elf.def_dynamic)
15174 && _bfd_elf_section_offset (output_bfd, info, input_section,
15175 rel->r_offset) != (bfd_vma) -1)
15177 info->callbacks->einfo
15178 /* xgettext:c-format */
15179 (_("%P: %H: unresolvable %s against `%T'\n"),
15180 input_bfd, input_section, rel->r_offset,
15182 h->elf.root.root.string);
15186 /* 16-bit fields in insns mostly have signed values, but a
15187 few insns have 16-bit unsigned values. Really, we should
15188 have different reloc types. */
15189 if (howto->complain_on_overflow != complain_overflow_dont
15190 && howto->dst_mask == 0xffff
15191 && (input_section->flags & SEC_CODE) != 0)
15193 enum complain_overflow complain = complain_overflow_signed;
15195 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15196 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15197 complain = complain_overflow_bitfield;
15198 else if (howto->rightshift == 0
15199 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15200 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15201 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15202 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15203 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15204 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15205 complain = complain_overflow_unsigned;
15206 if (howto->complain_on_overflow != complain)
15208 alt_howto = *howto;
15209 alt_howto.complain_on_overflow = complain;
15210 howto = &alt_howto;
15214 if (r_type == R_PPC64_REL16DX_HA)
15216 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15217 if (rel->r_offset + 4 > input_section->size)
15218 r = bfd_reloc_outofrange;
15221 relocation += addend;
15222 relocation -= (rel->r_offset
15223 + input_section->output_offset
15224 + input_section->output_section->vma);
15225 relocation = (bfd_signed_vma) relocation >> 16;
15226 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15228 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15229 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15231 if (relocation + 0x8000 > 0xffff)
15232 r = bfd_reloc_overflow;
15236 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15237 rel->r_offset, relocation, addend);
15239 if (r != bfd_reloc_ok)
15241 char *more_info = NULL;
15242 const char *reloc_name = howto->name;
15244 if (reloc_dest != DEST_NORMAL)
15246 more_info = bfd_malloc (strlen (reloc_name) + 8);
15247 if (more_info != NULL)
15249 strcpy (more_info, reloc_name);
15250 strcat (more_info, (reloc_dest == DEST_OPD
15251 ? " (OPD)" : " (stub)"));
15252 reloc_name = more_info;
15256 if (r == bfd_reloc_overflow)
15258 /* On code like "if (foo) foo();" don't report overflow
15259 on a branch to zero when foo is undefined. */
15261 && (reloc_dest == DEST_STUB
15263 && (h->elf.root.type == bfd_link_hash_undefweak
15264 || h->elf.root.type == bfd_link_hash_undefined)
15265 && is_branch_reloc (r_type))))
15266 info->callbacks->reloc_overflow (info, &h->elf.root,
15267 sym_name, reloc_name,
15269 input_bfd, input_section,
15274 info->callbacks->einfo
15275 /* xgettext:c-format */
15276 (_("%P: %H: %s against `%T': error %d\n"),
15277 input_bfd, input_section, rel->r_offset,
15278 reloc_name, sym_name, (int) r);
15281 if (more_info != NULL)
15291 Elf_Internal_Shdr *rel_hdr;
15292 size_t deleted = rel - wrel;
15294 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15295 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15296 if (rel_hdr->sh_size == 0)
15298 /* It is too late to remove an empty reloc section. Leave
15300 ??? What is wrong with an empty section??? */
15301 rel_hdr->sh_size = rel_hdr->sh_entsize;
15304 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15305 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15306 input_section->reloc_count -= deleted;
15309 /* If we're emitting relocations, then shortly after this function
15310 returns, reloc offsets and addends for this section will be
15311 adjusted. Worse, reloc symbol indices will be for the output
15312 file rather than the input. Save a copy of the relocs for
15313 opd_entry_value. */
15314 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15317 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15318 rel = bfd_alloc (input_bfd, amt);
15319 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15320 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15323 memcpy (rel, relocs, amt);
15328 /* Adjust the value of any local symbols in opd sections. */
15331 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15332 const char *name ATTRIBUTE_UNUSED,
15333 Elf_Internal_Sym *elfsym,
15334 asection *input_sec,
15335 struct elf_link_hash_entry *h)
15337 struct _opd_sec_data *opd;
15344 opd = get_opd_info (input_sec);
15345 if (opd == NULL || opd->adjust == NULL)
15348 value = elfsym->st_value - input_sec->output_offset;
15349 if (!bfd_link_relocatable (info))
15350 value -= input_sec->output_section->vma;
15352 adjust = opd->adjust[OPD_NDX (value)];
15356 elfsym->st_value += adjust;
15360 /* Finish up dynamic symbol handling. We set the contents of various
15361 dynamic sections here. */
15364 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15365 struct bfd_link_info *info,
15366 struct elf_link_hash_entry *h,
15367 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
15369 struct ppc_link_hash_table *htab;
15370 struct plt_entry *ent;
15371 Elf_Internal_Rela rela;
15374 htab = ppc_hash_table (info);
15378 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15379 if (ent->plt.offset != (bfd_vma) -1)
15381 /* This symbol has an entry in the procedure linkage
15382 table. Set it up. */
15383 if (!htab->elf.dynamic_sections_created
15384 || h->dynindx == -1)
15386 BFD_ASSERT (h->type == STT_GNU_IFUNC
15388 && (h->root.type == bfd_link_hash_defined
15389 || h->root.type == bfd_link_hash_defweak));
15390 rela.r_offset = (htab->elf.iplt->output_section->vma
15391 + htab->elf.iplt->output_offset
15392 + ent->plt.offset);
15394 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15396 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15397 rela.r_addend = (h->root.u.def.value
15398 + h->root.u.def.section->output_offset
15399 + h->root.u.def.section->output_section->vma
15401 loc = (htab->elf.irelplt->contents
15402 + (htab->elf.irelplt->reloc_count++
15403 * sizeof (Elf64_External_Rela)));
15407 rela.r_offset = (htab->elf.splt->output_section->vma
15408 + htab->elf.splt->output_offset
15409 + ent->plt.offset);
15410 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15411 rela.r_addend = ent->addend;
15412 loc = (htab->elf.srelplt->contents
15413 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15414 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15416 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15418 if (!htab->opd_abi)
15420 if (!h->def_regular)
15422 /* Mark the symbol as undefined, rather than as
15423 defined in glink. Leave the value if there were
15424 any relocations where pointer equality matters
15425 (this is a clue for the dynamic linker, to make
15426 function pointer comparisons work between an
15427 application and shared library), otherwise set it
15429 sym->st_shndx = SHN_UNDEF;
15430 if (!h->pointer_equality_needed)
15432 else if (!h->ref_regular_nonweak)
15434 /* This breaks function pointer comparisons, but
15435 that is better than breaking tests for a NULL
15436 function pointer. */
15445 /* This symbol needs a copy reloc. Set it up. */
15447 if (h->dynindx == -1
15448 || (h->root.type != bfd_link_hash_defined
15449 && h->root.type != bfd_link_hash_defweak)
15450 || htab->relbss == NULL)
15453 rela.r_offset = (h->root.u.def.value
15454 + h->root.u.def.section->output_section->vma
15455 + h->root.u.def.section->output_offset);
15456 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15458 loc = htab->relbss->contents;
15459 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
15460 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15466 /* Used to decide how to sort relocs in an optimal manner for the
15467 dynamic linker, before writing them out. */
15469 static enum elf_reloc_type_class
15470 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15471 const asection *rel_sec,
15472 const Elf_Internal_Rela *rela)
15474 enum elf_ppc64_reloc_type r_type;
15475 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15477 if (rel_sec == htab->elf.irelplt)
15478 return reloc_class_ifunc;
15480 r_type = ELF64_R_TYPE (rela->r_info);
15483 case R_PPC64_RELATIVE:
15484 return reloc_class_relative;
15485 case R_PPC64_JMP_SLOT:
15486 return reloc_class_plt;
15488 return reloc_class_copy;
15490 return reloc_class_normal;
15494 /* Finish up the dynamic sections. */
15497 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15498 struct bfd_link_info *info)
15500 struct ppc_link_hash_table *htab;
15504 htab = ppc_hash_table (info);
15508 dynobj = htab->elf.dynobj;
15509 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15511 if (htab->elf.dynamic_sections_created)
15513 Elf64_External_Dyn *dyncon, *dynconend;
15515 if (sdyn == NULL || htab->elf.sgot == NULL)
15518 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15519 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15520 for (; dyncon < dynconend; dyncon++)
15522 Elf_Internal_Dyn dyn;
15525 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15532 case DT_PPC64_GLINK:
15534 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15535 /* We stupidly defined DT_PPC64_GLINK to be the start
15536 of glink rather than the first entry point, which is
15537 what ld.so needs, and now have a bigger stub to
15538 support automatic multiple TOCs. */
15539 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15543 s = bfd_get_section_by_name (output_bfd, ".opd");
15546 dyn.d_un.d_ptr = s->vma;
15550 if (htab->do_multi_toc && htab->multi_toc_needed)
15551 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15554 case DT_PPC64_OPDSZ:
15555 s = bfd_get_section_by_name (output_bfd, ".opd");
15558 dyn.d_un.d_val = s->size;
15562 s = htab->elf.splt;
15563 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15567 s = htab->elf.srelplt;
15568 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15572 dyn.d_un.d_val = htab->elf.srelplt->size;
15576 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15580 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15582 /* Fill in the first entry in the global offset table.
15583 We use it to hold the link-time TOCbase. */
15584 bfd_put_64 (output_bfd,
15585 elf_gp (output_bfd) + TOC_BASE_OFF,
15586 htab->elf.sgot->contents);
15588 /* Set .got entry size. */
15589 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15592 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15594 /* Set .plt entry size. */
15595 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15596 = PLT_ENTRY_SIZE (htab);
15599 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15600 brlt ourselves if emitrelocations. */
15601 if (htab->brlt != NULL
15602 && htab->brlt->reloc_count != 0
15603 && !_bfd_elf_link_output_relocs (output_bfd,
15605 elf_section_data (htab->brlt)->rela.hdr,
15606 elf_section_data (htab->brlt)->relocs,
15610 if (htab->glink != NULL
15611 && htab->glink->reloc_count != 0
15612 && !_bfd_elf_link_output_relocs (output_bfd,
15614 elf_section_data (htab->glink)->rela.hdr,
15615 elf_section_data (htab->glink)->relocs,
15619 if (htab->glink_eh_frame != NULL
15620 && htab->glink_eh_frame->size != 0)
15624 asection *stub_sec;
15626 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15627 for (stub_sec = htab->params->stub_bfd->sections;
15629 stub_sec = stub_sec->next)
15630 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15636 /* Offset to stub section. */
15637 val = (stub_sec->output_section->vma
15638 + stub_sec->output_offset);
15639 val -= (htab->glink_eh_frame->output_section->vma
15640 + htab->glink_eh_frame->output_offset
15641 + (p - htab->glink_eh_frame->contents));
15642 if (val + 0x80000000 > 0xffffffff)
15644 info->callbacks->einfo
15645 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15649 bfd_put_32 (dynobj, val, p);
15651 /* stub section size. */
15653 /* Augmentation. */
15658 if (htab->glink != NULL && htab->glink->size != 0)
15664 /* Offset to .glink. */
15665 val = (htab->glink->output_section->vma
15666 + htab->glink->output_offset
15668 val -= (htab->glink_eh_frame->output_section->vma
15669 + htab->glink_eh_frame->output_offset
15670 + (p - htab->glink_eh_frame->contents));
15671 if (val + 0x80000000 > 0xffffffff)
15673 info->callbacks->einfo
15674 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15675 htab->glink->name);
15678 bfd_put_32 (dynobj, val, p);
15682 /* Augmentation. */
15688 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15689 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15690 htab->glink_eh_frame,
15691 htab->glink_eh_frame->contents))
15695 /* We need to handle writing out multiple GOT sections ourselves,
15696 since we didn't add them to DYNOBJ. We know dynobj is the first
15698 while ((dynobj = dynobj->link.next) != NULL)
15702 if (!is_ppc64_elf (dynobj))
15705 s = ppc64_elf_tdata (dynobj)->got;
15708 && s->output_section != bfd_abs_section_ptr
15709 && !bfd_set_section_contents (output_bfd, s->output_section,
15710 s->contents, s->output_offset,
15713 s = ppc64_elf_tdata (dynobj)->relgot;
15716 && s->output_section != bfd_abs_section_ptr
15717 && !bfd_set_section_contents (output_bfd, s->output_section,
15718 s->contents, s->output_offset,
15726 #include "elf64-target.h"
15728 /* FreeBSD support */
15730 #undef TARGET_LITTLE_SYM
15731 #undef TARGET_LITTLE_NAME
15733 #undef TARGET_BIG_SYM
15734 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15735 #undef TARGET_BIG_NAME
15736 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15739 #define ELF_OSABI ELFOSABI_FREEBSD
15742 #define elf64_bed elf64_powerpc_fbsd_bed
15744 #include "elf64-target.h"