1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2018 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_want_dynrelro 1
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_dtrel_excludes_plt 1
80 #define elf_backend_default_execstack 0
82 #define bfd_elf64_mkobject ppc64_elf_mkobject
83 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
84 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
85 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
86 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
87 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
88 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
89 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
90 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
93 #define elf_backend_object_p ppc64_elf_object_p
94 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
95 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
96 #define elf_backend_write_core_note ppc64_elf_write_core_note
97 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
98 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
99 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
100 #define elf_backend_check_directives ppc64_elf_before_check_relocs
101 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
102 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
103 #define elf_backend_check_relocs ppc64_elf_check_relocs
104 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
105 #define elf_backend_gc_keep ppc64_elf_gc_keep
106 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
107 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
108 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
109 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
110 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
111 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
112 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
113 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
114 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
115 #define elf_backend_action_discarded ppc64_elf_action_discarded
116 #define elf_backend_relocate_section ppc64_elf_relocate_section
117 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
118 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
119 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
120 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
121 #define elf_backend_special_sections ppc64_elf_special_sections
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
124 #define elf_backend_get_reloc_section bfd_get_section_by_name
126 /* The name of the dynamic interpreter. This is put in the .interp
128 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
130 /* The size in bytes of an entry in the procedure linkage table. */
131 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
132 #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8)
134 /* The initial size of the plt reserved for the dynamic linker. */
135 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
137 /* Offsets to some stack save slots. */
139 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
140 /* This one is dodgy. ELFv2 does not have a linker word, so use the
141 CR save slot. Used only by optimised __tls_get_addr call stub,
142 relying on __tls_get_addr_opt not saving CR.. */
143 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
145 /* TOC base pointers offset from start of TOC. */
146 #define TOC_BASE_OFF 0x8000
147 /* TOC base alignment. */
148 #define TOC_BASE_ALIGN 256
150 /* Offset of tp and dtp pointers from start of TLS block. */
151 #define TP_OFFSET 0x7000
152 #define DTP_OFFSET 0x8000
154 /* .plt call stub instructions. The normal stub is like this, but
155 sometimes the .plt entry crosses a 64k boundary and we need to
156 insert an addi to adjust r11. */
157 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
158 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
159 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
160 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
161 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
162 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
163 #define BCTR 0x4e800420 /* bctr */
165 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
166 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
167 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
169 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
170 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
171 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
172 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
173 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
174 #define BNECTR 0x4ca20420 /* bnectr+ */
175 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
177 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
178 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
179 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
181 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
182 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
183 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
185 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
186 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
187 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
188 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
189 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
191 /* __glink_PLTresolve stub instructions. We enter with the index in R0. */
192 #define GLINK_PLTRESOLVE_SIZE(htab) \
193 (8u + (htab->opd_abi ? 11 * 4 : 14 * 4))
197 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
198 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
200 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
201 /* ld %2,(0b-1b)(%11) */
202 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
203 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
209 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
210 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
211 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
212 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
213 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
216 #define NOP 0x60000000
218 /* Some other nops. */
219 #define CROR_151515 0x4def7b82
220 #define CROR_313131 0x4ffffb82
222 /* .glink entries for the first 32k functions are two instructions. */
223 #define LI_R0_0 0x38000000 /* li %r0,0 */
224 #define B_DOT 0x48000000 /* b . */
226 /* After that, we need two instructions to load the index, followed by
228 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
229 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
231 /* Instructions used by the save and restore reg functions. */
232 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
233 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
234 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
235 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
236 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
237 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
238 #define LI_R12_0 0x39800000 /* li %r12,0 */
239 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
240 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
241 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
242 #define BLR 0x4e800020 /* blr */
244 /* Since .opd is an array of descriptors and each entry will end up
245 with identical R_PPC64_RELATIVE relocs, there is really no need to
246 propagate .opd relocs; The dynamic linker should be taught to
247 relocate .opd without reloc entries. */
248 #ifndef NO_OPD_RELOCS
249 #define NO_OPD_RELOCS 0
253 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
257 abiversion (bfd *abfd)
259 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
263 set_abiversion (bfd *abfd, int ver)
265 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
266 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
269 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
271 /* Relocation HOWTO's. */
272 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
274 static reloc_howto_type ppc64_elf_howto_raw[] =
276 /* This reloc does nothing. */
277 HOWTO (R_PPC64_NONE, /* type */
279 3, /* size (0 = byte, 1 = short, 2 = long) */
281 FALSE, /* pc_relative */
283 complain_overflow_dont, /* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_PPC64_NONE", /* name */
286 FALSE, /* partial_inplace */
289 FALSE), /* pcrel_offset */
291 /* A standard 32 bit relocation. */
292 HOWTO (R_PPC64_ADDR32, /* type */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
296 FALSE, /* pc_relative */
298 complain_overflow_bitfield, /* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_PPC64_ADDR32", /* name */
301 FALSE, /* partial_inplace */
303 0xffffffff, /* dst_mask */
304 FALSE), /* pcrel_offset */
306 /* An absolute 26 bit branch; the lower two bits must be zero.
307 FIXME: we don't check that, we just clear them. */
308 HOWTO (R_PPC64_ADDR24, /* type */
310 2, /* size (0 = byte, 1 = short, 2 = long) */
312 FALSE, /* pc_relative */
314 complain_overflow_bitfield, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_PPC64_ADDR24", /* name */
317 FALSE, /* partial_inplace */
319 0x03fffffc, /* dst_mask */
320 FALSE), /* pcrel_offset */
322 /* A standard 16 bit relocation. */
323 HOWTO (R_PPC64_ADDR16, /* type */
325 1, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE, /* pc_relative */
329 complain_overflow_bitfield, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_PPC64_ADDR16", /* name */
332 FALSE, /* partial_inplace */
334 0xffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
337 /* A 16 bit relocation without overflow. */
338 HOWTO (R_PPC64_ADDR16_LO, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_dont,/* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_PPC64_ADDR16_LO", /* name */
347 FALSE, /* partial_inplace */
349 0xffff, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 /* Bits 16-31 of an address. */
353 HOWTO (R_PPC64_ADDR16_HI, /* type */
355 1, /* size (0 = byte, 1 = short, 2 = long) */
357 FALSE, /* pc_relative */
359 complain_overflow_signed, /* complain_on_overflow */
360 bfd_elf_generic_reloc, /* special_function */
361 "R_PPC64_ADDR16_HI", /* name */
362 FALSE, /* partial_inplace */
364 0xffff, /* dst_mask */
365 FALSE), /* pcrel_offset */
367 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
368 bits, treated as a signed number, is negative. */
369 HOWTO (R_PPC64_ADDR16_HA, /* type */
371 1, /* size (0 = byte, 1 = short, 2 = long) */
373 FALSE, /* pc_relative */
375 complain_overflow_signed, /* complain_on_overflow */
376 ppc64_elf_ha_reloc, /* special_function */
377 "R_PPC64_ADDR16_HA", /* name */
378 FALSE, /* partial_inplace */
380 0xffff, /* dst_mask */
381 FALSE), /* pcrel_offset */
383 /* An absolute 16 bit branch; the lower two bits must be zero.
384 FIXME: we don't check that, we just clear them. */
385 HOWTO (R_PPC64_ADDR14, /* type */
387 2, /* size (0 = byte, 1 = short, 2 = long) */
389 FALSE, /* pc_relative */
391 complain_overflow_signed, /* complain_on_overflow */
392 ppc64_elf_branch_reloc, /* special_function */
393 "R_PPC64_ADDR14", /* name */
394 FALSE, /* partial_inplace */
396 0x0000fffc, /* dst_mask */
397 FALSE), /* pcrel_offset */
399 /* An absolute 16 bit branch, for which bit 10 should be set to
400 indicate that the branch is expected to be taken. The lower two
401 bits must be zero. */
402 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 FALSE, /* pc_relative */
408 complain_overflow_signed, /* complain_on_overflow */
409 ppc64_elf_brtaken_reloc, /* special_function */
410 "R_PPC64_ADDR14_BRTAKEN",/* name */
411 FALSE, /* partial_inplace */
413 0x0000fffc, /* dst_mask */
414 FALSE), /* pcrel_offset */
416 /* An absolute 16 bit branch, for which bit 10 should be set to
417 indicate that the branch is not expected to be taken. The lower
418 two bits must be zero. */
419 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 ppc64_elf_brtaken_reloc, /* special_function */
427 "R_PPC64_ADDR14_BRNTAKEN",/* name */
428 FALSE, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 FALSE), /* pcrel_offset */
433 /* A relative 26 bit branch; the lower two bits must be zero. */
434 HOWTO (R_PPC64_REL24, /* type */
436 2, /* size (0 = byte, 1 = short, 2 = long) */
438 TRUE, /* pc_relative */
440 complain_overflow_signed, /* complain_on_overflow */
441 ppc64_elf_branch_reloc, /* special_function */
442 "R_PPC64_REL24", /* name */
443 FALSE, /* partial_inplace */
445 0x03fffffc, /* dst_mask */
446 TRUE), /* pcrel_offset */
448 /* A relative 16 bit branch; the lower two bits must be zero. */
449 HOWTO (R_PPC64_REL14, /* type */
451 2, /* size (0 = byte, 1 = short, 2 = long) */
453 TRUE, /* pc_relative */
455 complain_overflow_signed, /* complain_on_overflow */
456 ppc64_elf_branch_reloc, /* special_function */
457 "R_PPC64_REL14", /* name */
458 FALSE, /* partial_inplace */
460 0x0000fffc, /* dst_mask */
461 TRUE), /* pcrel_offset */
463 /* A relative 16 bit branch. Bit 10 should be set to indicate that
464 the branch is expected to be taken. The lower two bits must be
466 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
470 TRUE, /* pc_relative */
472 complain_overflow_signed, /* complain_on_overflow */
473 ppc64_elf_brtaken_reloc, /* special_function */
474 "R_PPC64_REL14_BRTAKEN", /* name */
475 FALSE, /* partial_inplace */
477 0x0000fffc, /* dst_mask */
478 TRUE), /* pcrel_offset */
480 /* A relative 16 bit branch. Bit 10 should be set to indicate that
481 the branch is not expected to be taken. The lower two bits must
483 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
485 2, /* size (0 = byte, 1 = short, 2 = long) */
487 TRUE, /* pc_relative */
489 complain_overflow_signed, /* complain_on_overflow */
490 ppc64_elf_brtaken_reloc, /* special_function */
491 "R_PPC64_REL14_BRNTAKEN",/* name */
492 FALSE, /* partial_inplace */
494 0x0000fffc, /* dst_mask */
495 TRUE), /* pcrel_offset */
497 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
499 HOWTO (R_PPC64_GOT16, /* type */
501 1, /* size (0 = byte, 1 = short, 2 = long) */
503 FALSE, /* pc_relative */
505 complain_overflow_signed, /* complain_on_overflow */
506 ppc64_elf_unhandled_reloc, /* special_function */
507 "R_PPC64_GOT16", /* name */
508 FALSE, /* partial_inplace */
510 0xffff, /* dst_mask */
511 FALSE), /* pcrel_offset */
513 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
515 HOWTO (R_PPC64_GOT16_LO, /* type */
517 1, /* size (0 = byte, 1 = short, 2 = long) */
519 FALSE, /* pc_relative */
521 complain_overflow_dont, /* complain_on_overflow */
522 ppc64_elf_unhandled_reloc, /* special_function */
523 "R_PPC64_GOT16_LO", /* name */
524 FALSE, /* partial_inplace */
526 0xffff, /* dst_mask */
527 FALSE), /* pcrel_offset */
529 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
531 HOWTO (R_PPC64_GOT16_HI, /* type */
533 1, /* size (0 = byte, 1 = short, 2 = long) */
535 FALSE, /* pc_relative */
537 complain_overflow_signed,/* complain_on_overflow */
538 ppc64_elf_unhandled_reloc, /* special_function */
539 "R_PPC64_GOT16_HI", /* name */
540 FALSE, /* partial_inplace */
542 0xffff, /* dst_mask */
543 FALSE), /* pcrel_offset */
545 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
547 HOWTO (R_PPC64_GOT16_HA, /* type */
549 1, /* size (0 = byte, 1 = short, 2 = long) */
551 FALSE, /* pc_relative */
553 complain_overflow_signed,/* complain_on_overflow */
554 ppc64_elf_unhandled_reloc, /* special_function */
555 "R_PPC64_GOT16_HA", /* name */
556 FALSE, /* partial_inplace */
558 0xffff, /* dst_mask */
559 FALSE), /* pcrel_offset */
561 /* This is used only by the dynamic linker. The symbol should exist
562 both in the object being run and in some shared library. The
563 dynamic linker copies the data addressed by the symbol from the
564 shared library into the object, because the object being
565 run has to have the data at some particular address. */
566 HOWTO (R_PPC64_COPY, /* type */
568 0, /* this one is variable size */
570 FALSE, /* pc_relative */
572 complain_overflow_dont, /* complain_on_overflow */
573 ppc64_elf_unhandled_reloc, /* special_function */
574 "R_PPC64_COPY", /* name */
575 FALSE, /* partial_inplace */
578 FALSE), /* pcrel_offset */
580 /* Like R_PPC64_ADDR64, but used when setting global offset table
582 HOWTO (R_PPC64_GLOB_DAT, /* type */
584 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
586 FALSE, /* pc_relative */
588 complain_overflow_dont, /* complain_on_overflow */
589 ppc64_elf_unhandled_reloc, /* special_function */
590 "R_PPC64_GLOB_DAT", /* name */
591 FALSE, /* partial_inplace */
593 ONES (64), /* dst_mask */
594 FALSE), /* pcrel_offset */
596 /* Created by the link editor. Marks a procedure linkage table
597 entry for a symbol. */
598 HOWTO (R_PPC64_JMP_SLOT, /* type */
600 0, /* size (0 = byte, 1 = short, 2 = long) */
602 FALSE, /* pc_relative */
604 complain_overflow_dont, /* complain_on_overflow */
605 ppc64_elf_unhandled_reloc, /* special_function */
606 "R_PPC64_JMP_SLOT", /* name */
607 FALSE, /* partial_inplace */
610 FALSE), /* pcrel_offset */
612 /* Used only by the dynamic linker. When the object is run, this
613 doubleword64 is set to the load address of the object, plus the
615 HOWTO (R_PPC64_RELATIVE, /* type */
617 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
619 FALSE, /* pc_relative */
621 complain_overflow_dont, /* complain_on_overflow */
622 bfd_elf_generic_reloc, /* special_function */
623 "R_PPC64_RELATIVE", /* name */
624 FALSE, /* partial_inplace */
626 ONES (64), /* dst_mask */
627 FALSE), /* pcrel_offset */
629 /* Like R_PPC64_ADDR32, but may be unaligned. */
630 HOWTO (R_PPC64_UADDR32, /* type */
632 2, /* size (0 = byte, 1 = short, 2 = long) */
634 FALSE, /* pc_relative */
636 complain_overflow_bitfield, /* complain_on_overflow */
637 bfd_elf_generic_reloc, /* special_function */
638 "R_PPC64_UADDR32", /* name */
639 FALSE, /* partial_inplace */
641 0xffffffff, /* dst_mask */
642 FALSE), /* pcrel_offset */
644 /* Like R_PPC64_ADDR16, but may be unaligned. */
645 HOWTO (R_PPC64_UADDR16, /* type */
647 1, /* size (0 = byte, 1 = short, 2 = long) */
649 FALSE, /* pc_relative */
651 complain_overflow_bitfield, /* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_PPC64_UADDR16", /* name */
654 FALSE, /* partial_inplace */
656 0xffff, /* dst_mask */
657 FALSE), /* pcrel_offset */
659 /* 32-bit PC relative. */
660 HOWTO (R_PPC64_REL32, /* type */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
664 TRUE, /* pc_relative */
666 complain_overflow_signed, /* complain_on_overflow */
667 bfd_elf_generic_reloc, /* special_function */
668 "R_PPC64_REL32", /* name */
669 FALSE, /* partial_inplace */
671 0xffffffff, /* dst_mask */
672 TRUE), /* pcrel_offset */
674 /* 32-bit relocation to the symbol's procedure linkage table. */
675 HOWTO (R_PPC64_PLT32, /* type */
677 2, /* size (0 = byte, 1 = short, 2 = long) */
679 FALSE, /* pc_relative */
681 complain_overflow_bitfield, /* complain_on_overflow */
682 ppc64_elf_unhandled_reloc, /* special_function */
683 "R_PPC64_PLT32", /* name */
684 FALSE, /* partial_inplace */
686 0xffffffff, /* dst_mask */
687 FALSE), /* pcrel_offset */
689 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
690 FIXME: R_PPC64_PLTREL32 not supported. */
691 HOWTO (R_PPC64_PLTREL32, /* type */
693 2, /* size (0 = byte, 1 = short, 2 = long) */
695 TRUE, /* pc_relative */
697 complain_overflow_signed, /* complain_on_overflow */
698 ppc64_elf_unhandled_reloc, /* special_function */
699 "R_PPC64_PLTREL32", /* name */
700 FALSE, /* partial_inplace */
702 0xffffffff, /* dst_mask */
703 TRUE), /* pcrel_offset */
705 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
707 HOWTO (R_PPC64_PLT16_LO, /* type */
709 1, /* size (0 = byte, 1 = short, 2 = long) */
711 FALSE, /* pc_relative */
713 complain_overflow_dont, /* complain_on_overflow */
714 ppc64_elf_unhandled_reloc, /* special_function */
715 "R_PPC64_PLT16_LO", /* name */
716 FALSE, /* partial_inplace */
718 0xffff, /* dst_mask */
719 FALSE), /* pcrel_offset */
721 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
723 HOWTO (R_PPC64_PLT16_HI, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE, /* pc_relative */
729 complain_overflow_signed, /* complain_on_overflow */
730 ppc64_elf_unhandled_reloc, /* special_function */
731 "R_PPC64_PLT16_HI", /* name */
732 FALSE, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE), /* pcrel_offset */
737 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
739 HOWTO (R_PPC64_PLT16_HA, /* type */
741 1, /* size (0 = byte, 1 = short, 2 = long) */
743 FALSE, /* pc_relative */
745 complain_overflow_signed, /* complain_on_overflow */
746 ppc64_elf_unhandled_reloc, /* special_function */
747 "R_PPC64_PLT16_HA", /* name */
748 FALSE, /* partial_inplace */
750 0xffff, /* dst_mask */
751 FALSE), /* pcrel_offset */
753 /* 16-bit section relative relocation. */
754 HOWTO (R_PPC64_SECTOFF, /* type */
756 1, /* size (0 = byte, 1 = short, 2 = long) */
758 FALSE, /* pc_relative */
760 complain_overflow_signed, /* complain_on_overflow */
761 ppc64_elf_sectoff_reloc, /* special_function */
762 "R_PPC64_SECTOFF", /* name */
763 FALSE, /* partial_inplace */
765 0xffff, /* dst_mask */
766 FALSE), /* pcrel_offset */
768 /* Like R_PPC64_SECTOFF, but no overflow warning. */
769 HOWTO (R_PPC64_SECTOFF_LO, /* type */
771 1, /* size (0 = byte, 1 = short, 2 = long) */
773 FALSE, /* pc_relative */
775 complain_overflow_dont, /* complain_on_overflow */
776 ppc64_elf_sectoff_reloc, /* special_function */
777 "R_PPC64_SECTOFF_LO", /* name */
778 FALSE, /* partial_inplace */
780 0xffff, /* dst_mask */
781 FALSE), /* pcrel_offset */
783 /* 16-bit upper half section relative relocation. */
784 HOWTO (R_PPC64_SECTOFF_HI, /* type */
786 1, /* size (0 = byte, 1 = short, 2 = long) */
788 FALSE, /* pc_relative */
790 complain_overflow_signed, /* complain_on_overflow */
791 ppc64_elf_sectoff_reloc, /* special_function */
792 "R_PPC64_SECTOFF_HI", /* name */
793 FALSE, /* partial_inplace */
795 0xffff, /* dst_mask */
796 FALSE), /* pcrel_offset */
798 /* 16-bit upper half adjusted section relative relocation. */
799 HOWTO (R_PPC64_SECTOFF_HA, /* type */
801 1, /* size (0 = byte, 1 = short, 2 = long) */
803 FALSE, /* pc_relative */
805 complain_overflow_signed, /* complain_on_overflow */
806 ppc64_elf_sectoff_ha_reloc, /* special_function */
807 "R_PPC64_SECTOFF_HA", /* name */
808 FALSE, /* partial_inplace */
810 0xffff, /* dst_mask */
811 FALSE), /* pcrel_offset */
813 /* Like R_PPC64_REL24 without touching the two least significant bits. */
814 HOWTO (R_PPC64_REL30, /* type */
816 2, /* size (0 = byte, 1 = short, 2 = long) */
818 TRUE, /* pc_relative */
820 complain_overflow_dont, /* complain_on_overflow */
821 bfd_elf_generic_reloc, /* special_function */
822 "R_PPC64_REL30", /* name */
823 FALSE, /* partial_inplace */
825 0xfffffffc, /* dst_mask */
826 TRUE), /* pcrel_offset */
828 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
830 /* A standard 64-bit relocation. */
831 HOWTO (R_PPC64_ADDR64, /* type */
833 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC64_ADDR64", /* name */
840 FALSE, /* partial_inplace */
842 ONES (64), /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* The bits 32-47 of an address. */
846 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
848 1, /* size (0 = byte, 1 = short, 2 = long) */
850 FALSE, /* pc_relative */
852 complain_overflow_dont, /* complain_on_overflow */
853 bfd_elf_generic_reloc, /* special_function */
854 "R_PPC64_ADDR16_HIGHER", /* name */
855 FALSE, /* partial_inplace */
857 0xffff, /* dst_mask */
858 FALSE), /* pcrel_offset */
860 /* The bits 32-47 of an address, plus 1 if the contents of the low
861 16 bits, treated as a signed number, is negative. */
862 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
864 1, /* size (0 = byte, 1 = short, 2 = long) */
866 FALSE, /* pc_relative */
868 complain_overflow_dont, /* complain_on_overflow */
869 ppc64_elf_ha_reloc, /* special_function */
870 "R_PPC64_ADDR16_HIGHERA", /* name */
871 FALSE, /* partial_inplace */
873 0xffff, /* dst_mask */
874 FALSE), /* pcrel_offset */
876 /* The bits 48-63 of an address. */
877 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
879 1, /* size (0 = byte, 1 = short, 2 = long) */
881 FALSE, /* pc_relative */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_ADDR16_HIGHEST", /* name */
886 FALSE, /* partial_inplace */
888 0xffff, /* dst_mask */
889 FALSE), /* pcrel_offset */
891 /* The bits 48-63 of an address, plus 1 if the contents of the low
892 16 bits, treated as a signed number, is negative. */
893 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
895 1, /* size (0 = byte, 1 = short, 2 = long) */
897 FALSE, /* pc_relative */
899 complain_overflow_dont, /* complain_on_overflow */
900 ppc64_elf_ha_reloc, /* special_function */
901 "R_PPC64_ADDR16_HIGHESTA", /* name */
902 FALSE, /* partial_inplace */
904 0xffff, /* dst_mask */
905 FALSE), /* pcrel_offset */
907 /* Like ADDR64, but may be unaligned. */
908 HOWTO (R_PPC64_UADDR64, /* type */
910 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
912 FALSE, /* pc_relative */
914 complain_overflow_dont, /* complain_on_overflow */
915 bfd_elf_generic_reloc, /* special_function */
916 "R_PPC64_UADDR64", /* name */
917 FALSE, /* partial_inplace */
919 ONES (64), /* dst_mask */
920 FALSE), /* pcrel_offset */
922 /* 64-bit relative relocation. */
923 HOWTO (R_PPC64_REL64, /* type */
925 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
927 TRUE, /* pc_relative */
929 complain_overflow_dont, /* complain_on_overflow */
930 bfd_elf_generic_reloc, /* special_function */
931 "R_PPC64_REL64", /* name */
932 FALSE, /* partial_inplace */
934 ONES (64), /* dst_mask */
935 TRUE), /* pcrel_offset */
937 /* 64-bit relocation to the symbol's procedure linkage table. */
938 HOWTO (R_PPC64_PLT64, /* type */
940 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
942 FALSE, /* pc_relative */
944 complain_overflow_dont, /* complain_on_overflow */
945 ppc64_elf_unhandled_reloc, /* special_function */
946 "R_PPC64_PLT64", /* name */
947 FALSE, /* partial_inplace */
949 ONES (64), /* dst_mask */
950 FALSE), /* pcrel_offset */
952 /* 64-bit PC relative relocation to the symbol's procedure linkage
954 /* FIXME: R_PPC64_PLTREL64 not supported. */
955 HOWTO (R_PPC64_PLTREL64, /* type */
957 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
959 TRUE, /* pc_relative */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc64_elf_unhandled_reloc, /* special_function */
963 "R_PPC64_PLTREL64", /* name */
964 FALSE, /* partial_inplace */
966 ONES (64), /* dst_mask */
967 TRUE), /* pcrel_offset */
969 /* 16 bit TOC-relative relocation. */
971 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
972 HOWTO (R_PPC64_TOC16, /* type */
974 1, /* size (0 = byte, 1 = short, 2 = long) */
976 FALSE, /* pc_relative */
978 complain_overflow_signed, /* complain_on_overflow */
979 ppc64_elf_toc_reloc, /* special_function */
980 "R_PPC64_TOC16", /* name */
981 FALSE, /* partial_inplace */
983 0xffff, /* dst_mask */
984 FALSE), /* pcrel_offset */
986 /* 16 bit TOC-relative relocation without overflow. */
988 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
989 HOWTO (R_PPC64_TOC16_LO, /* type */
991 1, /* size (0 = byte, 1 = short, 2 = long) */
993 FALSE, /* pc_relative */
995 complain_overflow_dont, /* complain_on_overflow */
996 ppc64_elf_toc_reloc, /* special_function */
997 "R_PPC64_TOC16_LO", /* name */
998 FALSE, /* partial_inplace */
1000 0xffff, /* dst_mask */
1001 FALSE), /* pcrel_offset */
1003 /* 16 bit TOC-relative relocation, high 16 bits. */
1005 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1006 HOWTO (R_PPC64_TOC16_HI, /* type */
1007 16, /* rightshift */
1008 1, /* size (0 = byte, 1 = short, 2 = long) */
1010 FALSE, /* pc_relative */
1012 complain_overflow_signed, /* complain_on_overflow */
1013 ppc64_elf_toc_reloc, /* special_function */
1014 "R_PPC64_TOC16_HI", /* name */
1015 FALSE, /* partial_inplace */
1017 0xffff, /* dst_mask */
1018 FALSE), /* pcrel_offset */
1020 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1021 contents of the low 16 bits, treated as a signed number, is
1024 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1025 HOWTO (R_PPC64_TOC16_HA, /* type */
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 FALSE, /* pc_relative */
1031 complain_overflow_signed, /* complain_on_overflow */
1032 ppc64_elf_toc_ha_reloc, /* special_function */
1033 "R_PPC64_TOC16_HA", /* name */
1034 FALSE, /* partial_inplace */
1036 0xffff, /* dst_mask */
1037 FALSE), /* pcrel_offset */
1039 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1041 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1042 HOWTO (R_PPC64_TOC, /* type */
1044 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1046 FALSE, /* pc_relative */
1048 complain_overflow_dont, /* complain_on_overflow */
1049 ppc64_elf_toc64_reloc, /* special_function */
1050 "R_PPC64_TOC", /* name */
1051 FALSE, /* partial_inplace */
1053 ONES (64), /* dst_mask */
1054 FALSE), /* pcrel_offset */
1056 /* Like R_PPC64_GOT16, but also informs the link editor that the
1057 value to relocate may (!) refer to a PLT entry which the link
1058 editor (a) may replace with the symbol value. If the link editor
1059 is unable to fully resolve the symbol, it may (b) create a PLT
1060 entry and store the address to the new PLT entry in the GOT.
1061 This permits lazy resolution of function symbols at run time.
1062 The link editor may also skip all of this and just (c) emit a
1063 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1064 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1065 HOWTO (R_PPC64_PLTGOT16, /* type */
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 FALSE, /* pc_relative */
1071 complain_overflow_signed, /* complain_on_overflow */
1072 ppc64_elf_unhandled_reloc, /* special_function */
1073 "R_PPC64_PLTGOT16", /* name */
1074 FALSE, /* partial_inplace */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1079 /* Like R_PPC64_PLTGOT16, but without overflow. */
1080 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1081 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1085 FALSE, /* pc_relative */
1087 complain_overflow_dont, /* complain_on_overflow */
1088 ppc64_elf_unhandled_reloc, /* special_function */
1089 "R_PPC64_PLTGOT16_LO", /* name */
1090 FALSE, /* partial_inplace */
1092 0xffff, /* dst_mask */
1093 FALSE), /* pcrel_offset */
1095 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1096 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1097 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 FALSE, /* pc_relative */
1103 complain_overflow_signed, /* complain_on_overflow */
1104 ppc64_elf_unhandled_reloc, /* special_function */
1105 "R_PPC64_PLTGOT16_HI", /* name */
1106 FALSE, /* partial_inplace */
1108 0xffff, /* dst_mask */
1109 FALSE), /* pcrel_offset */
1111 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1112 1 if the contents of the low 16 bits, treated as a signed number,
1114 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1115 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1116 16, /* rightshift */
1117 1, /* size (0 = byte, 1 = short, 2 = long) */
1119 FALSE, /* pc_relative */
1121 complain_overflow_signed, /* complain_on_overflow */
1122 ppc64_elf_unhandled_reloc, /* special_function */
1123 "R_PPC64_PLTGOT16_HA", /* name */
1124 FALSE, /* partial_inplace */
1126 0xffff, /* dst_mask */
1127 FALSE), /* pcrel_offset */
1129 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1130 HOWTO (R_PPC64_ADDR16_DS, /* type */
1132 1, /* size (0 = byte, 1 = short, 2 = long) */
1134 FALSE, /* pc_relative */
1136 complain_overflow_signed, /* complain_on_overflow */
1137 bfd_elf_generic_reloc, /* special_function */
1138 "R_PPC64_ADDR16_DS", /* name */
1139 FALSE, /* partial_inplace */
1141 0xfffc, /* dst_mask */
1142 FALSE), /* pcrel_offset */
1144 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1145 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1147 1, /* size (0 = byte, 1 = short, 2 = long) */
1149 FALSE, /* pc_relative */
1151 complain_overflow_dont,/* complain_on_overflow */
1152 bfd_elf_generic_reloc, /* special_function */
1153 "R_PPC64_ADDR16_LO_DS",/* name */
1154 FALSE, /* partial_inplace */
1156 0xfffc, /* dst_mask */
1157 FALSE), /* pcrel_offset */
1159 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1160 HOWTO (R_PPC64_GOT16_DS, /* type */
1162 1, /* size (0 = byte, 1 = short, 2 = long) */
1164 FALSE, /* pc_relative */
1166 complain_overflow_signed, /* complain_on_overflow */
1167 ppc64_elf_unhandled_reloc, /* special_function */
1168 "R_PPC64_GOT16_DS", /* name */
1169 FALSE, /* partial_inplace */
1171 0xfffc, /* dst_mask */
1172 FALSE), /* pcrel_offset */
1174 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1175 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1177 1, /* size (0 = byte, 1 = short, 2 = long) */
1179 FALSE, /* pc_relative */
1181 complain_overflow_dont, /* complain_on_overflow */
1182 ppc64_elf_unhandled_reloc, /* special_function */
1183 "R_PPC64_GOT16_LO_DS", /* name */
1184 FALSE, /* partial_inplace */
1186 0xfffc, /* dst_mask */
1187 FALSE), /* pcrel_offset */
1189 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1190 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1192 1, /* size (0 = byte, 1 = short, 2 = long) */
1194 FALSE, /* pc_relative */
1196 complain_overflow_dont, /* complain_on_overflow */
1197 ppc64_elf_unhandled_reloc, /* special_function */
1198 "R_PPC64_PLT16_LO_DS", /* name */
1199 FALSE, /* partial_inplace */
1201 0xfffc, /* dst_mask */
1202 FALSE), /* pcrel_offset */
1204 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1205 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1207 1, /* size (0 = byte, 1 = short, 2 = long) */
1209 FALSE, /* pc_relative */
1211 complain_overflow_signed, /* complain_on_overflow */
1212 ppc64_elf_sectoff_reloc, /* special_function */
1213 "R_PPC64_SECTOFF_DS", /* name */
1214 FALSE, /* partial_inplace */
1216 0xfffc, /* dst_mask */
1217 FALSE), /* pcrel_offset */
1219 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1220 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_dont, /* complain_on_overflow */
1227 ppc64_elf_sectoff_reloc, /* special_function */
1228 "R_PPC64_SECTOFF_LO_DS",/* name */
1229 FALSE, /* partial_inplace */
1231 0xfffc, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1235 HOWTO (R_PPC64_TOC16_DS, /* type */
1237 1, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE, /* pc_relative */
1241 complain_overflow_signed, /* complain_on_overflow */
1242 ppc64_elf_toc_reloc, /* special_function */
1243 "R_PPC64_TOC16_DS", /* name */
1244 FALSE, /* partial_inplace */
1246 0xfffc, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1249 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1250 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1254 FALSE, /* pc_relative */
1256 complain_overflow_dont, /* complain_on_overflow */
1257 ppc64_elf_toc_reloc, /* special_function */
1258 "R_PPC64_TOC16_LO_DS", /* name */
1259 FALSE, /* partial_inplace */
1261 0xfffc, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1264 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1265 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1266 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1268 1, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE, /* pc_relative */
1272 complain_overflow_signed, /* complain_on_overflow */
1273 ppc64_elf_unhandled_reloc, /* special_function */
1274 "R_PPC64_PLTGOT16_DS", /* name */
1275 FALSE, /* partial_inplace */
1277 0xfffc, /* dst_mask */
1278 FALSE), /* pcrel_offset */
1280 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1281 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1282 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1284 1, /* size (0 = byte, 1 = short, 2 = long) */
1286 FALSE, /* pc_relative */
1288 complain_overflow_dont, /* complain_on_overflow */
1289 ppc64_elf_unhandled_reloc, /* special_function */
1290 "R_PPC64_PLTGOT16_LO_DS",/* name */
1291 FALSE, /* partial_inplace */
1293 0xfffc, /* dst_mask */
1294 FALSE), /* pcrel_offset */
1296 /* Marker relocs for TLS. */
1299 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_PPC64_TLS", /* name */
1306 FALSE, /* partial_inplace */
1309 FALSE), /* pcrel_offset */
1311 HOWTO (R_PPC64_TLSGD,
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE, /* pc_relative */
1317 complain_overflow_dont, /* complain_on_overflow */
1318 bfd_elf_generic_reloc, /* special_function */
1319 "R_PPC64_TLSGD", /* name */
1320 FALSE, /* partial_inplace */
1323 FALSE), /* pcrel_offset */
1325 HOWTO (R_PPC64_TLSLD,
1327 2, /* size (0 = byte, 1 = short, 2 = long) */
1329 FALSE, /* pc_relative */
1331 complain_overflow_dont, /* complain_on_overflow */
1332 bfd_elf_generic_reloc, /* special_function */
1333 "R_PPC64_TLSLD", /* name */
1334 FALSE, /* partial_inplace */
1337 FALSE), /* pcrel_offset */
1339 /* Marker reloc for optimizing r2 save in prologue rather than on
1340 each plt call stub. */
1341 HOWTO (R_PPC64_TOCSAVE,
1343 2, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_dont, /* complain_on_overflow */
1348 bfd_elf_generic_reloc, /* special_function */
1349 "R_PPC64_TOCSAVE", /* name */
1350 FALSE, /* partial_inplace */
1353 FALSE), /* pcrel_offset */
1355 /* Marker relocs on inline plt call instructions. */
1356 HOWTO (R_PPC64_PLTSEQ,
1358 2, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 bfd_elf_generic_reloc, /* special_function */
1364 "R_PPC64_PLTSEQ", /* name */
1365 FALSE, /* partial_inplace */
1368 FALSE), /* pcrel_offset */
1370 HOWTO (R_PPC64_PLTCALL,
1372 2, /* size (0 = byte, 1 = short, 2 = long) */
1374 FALSE, /* pc_relative */
1376 complain_overflow_dont, /* complain_on_overflow */
1377 bfd_elf_generic_reloc, /* special_function */
1378 "R_PPC64_PLTCALL", /* name */
1379 FALSE, /* partial_inplace */
1382 FALSE), /* pcrel_offset */
1384 /* Computes the load module index of the load module that contains the
1385 definition of its TLS sym. */
1386 HOWTO (R_PPC64_DTPMOD64,
1388 4, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPMOD64", /* name */
1395 FALSE, /* partial_inplace */
1397 ONES (64), /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Computes a dtv-relative displacement, the difference between the value
1401 of sym+add and the base address of the thread-local storage block that
1402 contains the definition of sym, minus 0x8000. */
1403 HOWTO (R_PPC64_DTPREL64,
1405 4, /* size (0 = byte, 1 = short, 2 = long) */
1407 FALSE, /* pc_relative */
1409 complain_overflow_dont, /* complain_on_overflow */
1410 ppc64_elf_unhandled_reloc, /* special_function */
1411 "R_PPC64_DTPREL64", /* name */
1412 FALSE, /* partial_inplace */
1414 ONES (64), /* dst_mask */
1415 FALSE), /* pcrel_offset */
1417 /* A 16 bit dtprel reloc. */
1418 HOWTO (R_PPC64_DTPREL16,
1420 1, /* size (0 = byte, 1 = short, 2 = long) */
1422 FALSE, /* pc_relative */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 ppc64_elf_unhandled_reloc, /* special_function */
1426 "R_PPC64_DTPREL16", /* name */
1427 FALSE, /* partial_inplace */
1429 0xffff, /* dst_mask */
1430 FALSE), /* pcrel_offset */
1432 /* Like DTPREL16, but no overflow. */
1433 HOWTO (R_PPC64_DTPREL16_LO,
1435 1, /* size (0 = byte, 1 = short, 2 = long) */
1437 FALSE, /* pc_relative */
1439 complain_overflow_dont, /* complain_on_overflow */
1440 ppc64_elf_unhandled_reloc, /* special_function */
1441 "R_PPC64_DTPREL16_LO", /* name */
1442 FALSE, /* partial_inplace */
1444 0xffff, /* dst_mask */
1445 FALSE), /* pcrel_offset */
1447 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1448 HOWTO (R_PPC64_DTPREL16_HI,
1449 16, /* rightshift */
1450 1, /* size (0 = byte, 1 = short, 2 = long) */
1452 FALSE, /* pc_relative */
1454 complain_overflow_signed, /* complain_on_overflow */
1455 ppc64_elf_unhandled_reloc, /* special_function */
1456 "R_PPC64_DTPREL16_HI", /* name */
1457 FALSE, /* partial_inplace */
1459 0xffff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1462 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1463 HOWTO (R_PPC64_DTPREL16_HA,
1464 16, /* rightshift */
1465 1, /* size (0 = byte, 1 = short, 2 = long) */
1467 FALSE, /* pc_relative */
1469 complain_overflow_signed, /* complain_on_overflow */
1470 ppc64_elf_unhandled_reloc, /* special_function */
1471 "R_PPC64_DTPREL16_HA", /* name */
1472 FALSE, /* partial_inplace */
1474 0xffff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1477 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1478 HOWTO (R_PPC64_DTPREL16_HIGHER,
1479 32, /* rightshift */
1480 1, /* size (0 = byte, 1 = short, 2 = long) */
1482 FALSE, /* pc_relative */
1484 complain_overflow_dont, /* complain_on_overflow */
1485 ppc64_elf_unhandled_reloc, /* special_function */
1486 "R_PPC64_DTPREL16_HIGHER", /* name */
1487 FALSE, /* partial_inplace */
1489 0xffff, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1492 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1493 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1494 32, /* rightshift */
1495 1, /* size (0 = byte, 1 = short, 2 = long) */
1497 FALSE, /* pc_relative */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 ppc64_elf_unhandled_reloc, /* special_function */
1501 "R_PPC64_DTPREL16_HIGHERA", /* name */
1502 FALSE, /* partial_inplace */
1504 0xffff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1507 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1508 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1509 48, /* rightshift */
1510 1, /* size (0 = byte, 1 = short, 2 = long) */
1512 FALSE, /* pc_relative */
1514 complain_overflow_dont, /* complain_on_overflow */
1515 ppc64_elf_unhandled_reloc, /* special_function */
1516 "R_PPC64_DTPREL16_HIGHEST", /* name */
1517 FALSE, /* partial_inplace */
1519 0xffff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1522 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1523 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1524 48, /* rightshift */
1525 1, /* size (0 = byte, 1 = short, 2 = long) */
1527 FALSE, /* pc_relative */
1529 complain_overflow_dont, /* complain_on_overflow */
1530 ppc64_elf_unhandled_reloc, /* special_function */
1531 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1532 FALSE, /* partial_inplace */
1534 0xffff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1537 /* Like DTPREL16, but for insns with a DS field. */
1538 HOWTO (R_PPC64_DTPREL16_DS,
1540 1, /* size (0 = byte, 1 = short, 2 = long) */
1542 FALSE, /* pc_relative */
1544 complain_overflow_signed, /* complain_on_overflow */
1545 ppc64_elf_unhandled_reloc, /* special_function */
1546 "R_PPC64_DTPREL16_DS", /* name */
1547 FALSE, /* partial_inplace */
1549 0xfffc, /* dst_mask */
1550 FALSE), /* pcrel_offset */
1552 /* Like DTPREL16_DS, but no overflow. */
1553 HOWTO (R_PPC64_DTPREL16_LO_DS,
1555 1, /* size (0 = byte, 1 = short, 2 = long) */
1557 FALSE, /* pc_relative */
1559 complain_overflow_dont, /* complain_on_overflow */
1560 ppc64_elf_unhandled_reloc, /* special_function */
1561 "R_PPC64_DTPREL16_LO_DS", /* name */
1562 FALSE, /* partial_inplace */
1564 0xfffc, /* dst_mask */
1565 FALSE), /* pcrel_offset */
1567 /* Computes a tp-relative displacement, the difference between the value of
1568 sym+add and the value of the thread pointer (r13). */
1569 HOWTO (R_PPC64_TPREL64,
1571 4, /* size (0 = byte, 1 = short, 2 = long) */
1573 FALSE, /* pc_relative */
1575 complain_overflow_dont, /* complain_on_overflow */
1576 ppc64_elf_unhandled_reloc, /* special_function */
1577 "R_PPC64_TPREL64", /* name */
1578 FALSE, /* partial_inplace */
1580 ONES (64), /* dst_mask */
1581 FALSE), /* pcrel_offset */
1583 /* A 16 bit tprel reloc. */
1584 HOWTO (R_PPC64_TPREL16,
1586 1, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE, /* pc_relative */
1590 complain_overflow_signed, /* complain_on_overflow */
1591 ppc64_elf_unhandled_reloc, /* special_function */
1592 "R_PPC64_TPREL16", /* name */
1593 FALSE, /* partial_inplace */
1595 0xffff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1598 /* Like TPREL16, but no overflow. */
1599 HOWTO (R_PPC64_TPREL16_LO,
1601 1, /* size (0 = byte, 1 = short, 2 = long) */
1603 FALSE, /* pc_relative */
1605 complain_overflow_dont, /* complain_on_overflow */
1606 ppc64_elf_unhandled_reloc, /* special_function */
1607 "R_PPC64_TPREL16_LO", /* name */
1608 FALSE, /* partial_inplace */
1610 0xffff, /* dst_mask */
1611 FALSE), /* pcrel_offset */
1613 /* Like TPREL16_LO, but next higher group of 16 bits. */
1614 HOWTO (R_PPC64_TPREL16_HI,
1615 16, /* rightshift */
1616 1, /* size (0 = byte, 1 = short, 2 = long) */
1618 FALSE, /* pc_relative */
1620 complain_overflow_signed, /* complain_on_overflow */
1621 ppc64_elf_unhandled_reloc, /* special_function */
1622 "R_PPC64_TPREL16_HI", /* name */
1623 FALSE, /* partial_inplace */
1625 0xffff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1628 /* Like TPREL16_HI, but adjust for low 16 bits. */
1629 HOWTO (R_PPC64_TPREL16_HA,
1630 16, /* rightshift */
1631 1, /* size (0 = byte, 1 = short, 2 = long) */
1633 FALSE, /* pc_relative */
1635 complain_overflow_signed, /* complain_on_overflow */
1636 ppc64_elf_unhandled_reloc, /* special_function */
1637 "R_PPC64_TPREL16_HA", /* name */
1638 FALSE, /* partial_inplace */
1640 0xffff, /* dst_mask */
1641 FALSE), /* pcrel_offset */
1643 /* Like TPREL16_HI, but next higher group of 16 bits. */
1644 HOWTO (R_PPC64_TPREL16_HIGHER,
1645 32, /* rightshift */
1646 1, /* size (0 = byte, 1 = short, 2 = long) */
1648 FALSE, /* pc_relative */
1650 complain_overflow_dont, /* complain_on_overflow */
1651 ppc64_elf_unhandled_reloc, /* special_function */
1652 "R_PPC64_TPREL16_HIGHER", /* name */
1653 FALSE, /* partial_inplace */
1655 0xffff, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1658 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1659 HOWTO (R_PPC64_TPREL16_HIGHERA,
1660 32, /* rightshift */
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_dont, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_TPREL16_HIGHERA", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1674 HOWTO (R_PPC64_TPREL16_HIGHEST,
1675 48, /* rightshift */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc, /* special_function */
1682 "R_PPC64_TPREL16_HIGHEST", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1689 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1690 48, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE, /* pc_relative */
1695 complain_overflow_dont, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc, /* special_function */
1697 "R_PPC64_TPREL16_HIGHESTA", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE), /* pcrel_offset */
1703 /* Like TPREL16, but for insns with a DS field. */
1704 HOWTO (R_PPC64_TPREL16_DS,
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE, /* pc_relative */
1710 complain_overflow_signed, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc, /* special_function */
1712 "R_PPC64_TPREL16_DS", /* name */
1713 FALSE, /* partial_inplace */
1715 0xfffc, /* dst_mask */
1716 FALSE), /* pcrel_offset */
1718 /* Like TPREL16_DS, but no overflow. */
1719 HOWTO (R_PPC64_TPREL16_LO_DS,
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 FALSE, /* pc_relative */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 ppc64_elf_unhandled_reloc, /* special_function */
1727 "R_PPC64_TPREL16_LO_DS", /* name */
1728 FALSE, /* partial_inplace */
1730 0xfffc, /* dst_mask */
1731 FALSE), /* pcrel_offset */
1733 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1734 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1735 to the first entry relative to the TOC base (r2). */
1736 HOWTO (R_PPC64_GOT_TLSGD16,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE, /* pc_relative */
1742 complain_overflow_signed, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSGD16", /* name */
1745 FALSE, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1750 /* Like GOT_TLSGD16, but no overflow. */
1751 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE, /* pc_relative */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc, /* special_function */
1759 "R_PPC64_GOT_TLSGD16_LO", /* name */
1760 FALSE, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1765 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE, /* pc_relative */
1772 complain_overflow_signed, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSGD16_HI", /* name */
1775 FALSE, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1781 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1782 16, /* rightshift */
1783 1, /* size (0 = byte, 1 = short, 2 = long) */
1785 FALSE, /* pc_relative */
1787 complain_overflow_signed, /* complain_on_overflow */
1788 ppc64_elf_unhandled_reloc, /* special_function */
1789 "R_PPC64_GOT_TLSGD16_HA", /* name */
1790 FALSE, /* partial_inplace */
1792 0xffff, /* dst_mask */
1793 FALSE), /* pcrel_offset */
1795 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1796 with values (sym+add)@dtpmod and zero, and computes the offset to the
1797 first entry relative to the TOC base (r2). */
1798 HOWTO (R_PPC64_GOT_TLSLD16,
1800 1, /* size (0 = byte, 1 = short, 2 = long) */
1802 FALSE, /* pc_relative */
1804 complain_overflow_signed, /* complain_on_overflow */
1805 ppc64_elf_unhandled_reloc, /* special_function */
1806 "R_PPC64_GOT_TLSLD16", /* name */
1807 FALSE, /* partial_inplace */
1809 0xffff, /* dst_mask */
1810 FALSE), /* pcrel_offset */
1812 /* Like GOT_TLSLD16, but no overflow. */
1813 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1815 1, /* size (0 = byte, 1 = short, 2 = long) */
1817 FALSE, /* pc_relative */
1819 complain_overflow_dont, /* complain_on_overflow */
1820 ppc64_elf_unhandled_reloc, /* special_function */
1821 "R_PPC64_GOT_TLSLD16_LO", /* name */
1822 FALSE, /* partial_inplace */
1824 0xffff, /* dst_mask */
1825 FALSE), /* pcrel_offset */
1827 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1828 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1829 16, /* rightshift */
1830 1, /* size (0 = byte, 1 = short, 2 = long) */
1832 FALSE, /* pc_relative */
1834 complain_overflow_signed, /* complain_on_overflow */
1835 ppc64_elf_unhandled_reloc, /* special_function */
1836 "R_PPC64_GOT_TLSLD16_HI", /* name */
1837 FALSE, /* partial_inplace */
1839 0xffff, /* dst_mask */
1840 FALSE), /* pcrel_offset */
1842 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1843 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1844 16, /* rightshift */
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_signed, /* complain_on_overflow */
1850 ppc64_elf_unhandled_reloc, /* special_function */
1851 "R_PPC64_GOT_TLSLD16_HA", /* name */
1852 FALSE, /* partial_inplace */
1854 0xffff, /* dst_mask */
1855 FALSE), /* pcrel_offset */
1857 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1858 the offset to the entry relative to the TOC base (r2). */
1859 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1861 1, /* size (0 = byte, 1 = short, 2 = long) */
1863 FALSE, /* pc_relative */
1865 complain_overflow_signed, /* complain_on_overflow */
1866 ppc64_elf_unhandled_reloc, /* special_function */
1867 "R_PPC64_GOT_DTPREL16_DS", /* name */
1868 FALSE, /* partial_inplace */
1870 0xfffc, /* dst_mask */
1871 FALSE), /* pcrel_offset */
1873 /* Like GOT_DTPREL16_DS, but no overflow. */
1874 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1876 1, /* size (0 = byte, 1 = short, 2 = long) */
1878 FALSE, /* pc_relative */
1880 complain_overflow_dont, /* complain_on_overflow */
1881 ppc64_elf_unhandled_reloc, /* special_function */
1882 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1883 FALSE, /* partial_inplace */
1885 0xfffc, /* dst_mask */
1886 FALSE), /* pcrel_offset */
1888 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1889 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1890 16, /* rightshift */
1891 1, /* size (0 = byte, 1 = short, 2 = long) */
1893 FALSE, /* pc_relative */
1895 complain_overflow_signed, /* complain_on_overflow */
1896 ppc64_elf_unhandled_reloc, /* special_function */
1897 "R_PPC64_GOT_DTPREL16_HI", /* name */
1898 FALSE, /* partial_inplace */
1900 0xffff, /* dst_mask */
1901 FALSE), /* pcrel_offset */
1903 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1904 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1905 16, /* rightshift */
1906 1, /* size (0 = byte, 1 = short, 2 = long) */
1908 FALSE, /* pc_relative */
1910 complain_overflow_signed, /* complain_on_overflow */
1911 ppc64_elf_unhandled_reloc, /* special_function */
1912 "R_PPC64_GOT_DTPREL16_HA", /* name */
1913 FALSE, /* partial_inplace */
1915 0xffff, /* dst_mask */
1916 FALSE), /* pcrel_offset */
1918 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1919 offset to the entry relative to the TOC base (r2). */
1920 HOWTO (R_PPC64_GOT_TPREL16_DS,
1922 1, /* size (0 = byte, 1 = short, 2 = long) */
1924 FALSE, /* pc_relative */
1926 complain_overflow_signed, /* complain_on_overflow */
1927 ppc64_elf_unhandled_reloc, /* special_function */
1928 "R_PPC64_GOT_TPREL16_DS", /* name */
1929 FALSE, /* partial_inplace */
1931 0xfffc, /* dst_mask */
1932 FALSE), /* pcrel_offset */
1934 /* Like GOT_TPREL16_DS, but no overflow. */
1935 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1937 1, /* size (0 = byte, 1 = short, 2 = long) */
1939 FALSE, /* pc_relative */
1941 complain_overflow_dont, /* complain_on_overflow */
1942 ppc64_elf_unhandled_reloc, /* special_function */
1943 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1944 FALSE, /* partial_inplace */
1946 0xfffc, /* dst_mask */
1947 FALSE), /* pcrel_offset */
1949 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1950 HOWTO (R_PPC64_GOT_TPREL16_HI,
1951 16, /* rightshift */
1952 1, /* size (0 = byte, 1 = short, 2 = long) */
1954 FALSE, /* pc_relative */
1956 complain_overflow_signed, /* complain_on_overflow */
1957 ppc64_elf_unhandled_reloc, /* special_function */
1958 "R_PPC64_GOT_TPREL16_HI", /* name */
1959 FALSE, /* partial_inplace */
1961 0xffff, /* dst_mask */
1962 FALSE), /* pcrel_offset */
1964 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1965 HOWTO (R_PPC64_GOT_TPREL16_HA,
1966 16, /* rightshift */
1967 1, /* size (0 = byte, 1 = short, 2 = long) */
1969 FALSE, /* pc_relative */
1971 complain_overflow_signed, /* complain_on_overflow */
1972 ppc64_elf_unhandled_reloc, /* special_function */
1973 "R_PPC64_GOT_TPREL16_HA", /* name */
1974 FALSE, /* partial_inplace */
1976 0xffff, /* dst_mask */
1977 FALSE), /* pcrel_offset */
1979 HOWTO (R_PPC64_JMP_IREL, /* type */
1981 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1983 FALSE, /* pc_relative */
1985 complain_overflow_dont, /* complain_on_overflow */
1986 ppc64_elf_unhandled_reloc, /* special_function */
1987 "R_PPC64_JMP_IREL", /* name */
1988 FALSE, /* partial_inplace */
1991 FALSE), /* pcrel_offset */
1993 HOWTO (R_PPC64_IRELATIVE, /* type */
1995 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1997 FALSE, /* pc_relative */
1999 complain_overflow_dont, /* complain_on_overflow */
2000 bfd_elf_generic_reloc, /* special_function */
2001 "R_PPC64_IRELATIVE", /* name */
2002 FALSE, /* partial_inplace */
2004 ONES (64), /* dst_mask */
2005 FALSE), /* pcrel_offset */
2007 /* A 16 bit relative relocation. */
2008 HOWTO (R_PPC64_REL16, /* type */
2010 1, /* size (0 = byte, 1 = short, 2 = long) */
2012 TRUE, /* pc_relative */
2014 complain_overflow_signed, /* complain_on_overflow */
2015 bfd_elf_generic_reloc, /* special_function */
2016 "R_PPC64_REL16", /* name */
2017 FALSE, /* partial_inplace */
2019 0xffff, /* dst_mask */
2020 TRUE), /* pcrel_offset */
2022 /* A 16 bit relative relocation without overflow. */
2023 HOWTO (R_PPC64_REL16_LO, /* type */
2025 1, /* size (0 = byte, 1 = short, 2 = long) */
2027 TRUE, /* pc_relative */
2029 complain_overflow_dont,/* complain_on_overflow */
2030 bfd_elf_generic_reloc, /* special_function */
2031 "R_PPC64_REL16_LO", /* name */
2032 FALSE, /* partial_inplace */
2034 0xffff, /* dst_mask */
2035 TRUE), /* pcrel_offset */
2037 /* The high order 16 bits of a relative address. */
2038 HOWTO (R_PPC64_REL16_HI, /* type */
2039 16, /* rightshift */
2040 1, /* size (0 = byte, 1 = short, 2 = long) */
2042 TRUE, /* pc_relative */
2044 complain_overflow_signed, /* complain_on_overflow */
2045 bfd_elf_generic_reloc, /* special_function */
2046 "R_PPC64_REL16_HI", /* name */
2047 FALSE, /* partial_inplace */
2049 0xffff, /* dst_mask */
2050 TRUE), /* pcrel_offset */
2052 /* The high order 16 bits of a relative address, plus 1 if the contents of
2053 the low 16 bits, treated as a signed number, is negative. */
2054 HOWTO (R_PPC64_REL16_HA, /* type */
2055 16, /* rightshift */
2056 1, /* size (0 = byte, 1 = short, 2 = long) */
2058 TRUE, /* pc_relative */
2060 complain_overflow_signed, /* complain_on_overflow */
2061 ppc64_elf_ha_reloc, /* special_function */
2062 "R_PPC64_REL16_HA", /* name */
2063 FALSE, /* partial_inplace */
2065 0xffff, /* dst_mask */
2066 TRUE), /* pcrel_offset */
2068 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2069 HOWTO (R_PPC64_REL16DX_HA, /* type */
2070 16, /* rightshift */
2071 2, /* size (0 = byte, 1 = short, 2 = long) */
2073 TRUE, /* pc_relative */
2075 complain_overflow_signed, /* complain_on_overflow */
2076 ppc64_elf_ha_reloc, /* special_function */
2077 "R_PPC64_REL16DX_HA", /* name */
2078 FALSE, /* partial_inplace */
2080 0x1fffc1, /* dst_mask */
2081 TRUE), /* pcrel_offset */
2083 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
2084 HOWTO (R_PPC64_16DX_HA, /* type */
2085 16, /* rightshift */
2086 2, /* size (0 = byte, 1 = short, 2 = long) */
2088 FALSE, /* pc_relative */
2090 complain_overflow_signed, /* complain_on_overflow */
2091 ppc64_elf_ha_reloc, /* special_function */
2092 "R_PPC64_16DX_HA", /* name */
2093 FALSE, /* partial_inplace */
2095 0x1fffc1, /* dst_mask */
2096 FALSE), /* pcrel_offset */
2098 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2099 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2100 16, /* rightshift */
2101 1, /* size (0 = byte, 1 = short, 2 = long) */
2103 FALSE, /* pc_relative */
2105 complain_overflow_dont, /* complain_on_overflow */
2106 bfd_elf_generic_reloc, /* special_function */
2107 "R_PPC64_ADDR16_HIGH", /* name */
2108 FALSE, /* partial_inplace */
2110 0xffff, /* dst_mask */
2111 FALSE), /* pcrel_offset */
2113 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2114 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2115 16, /* rightshift */
2116 1, /* size (0 = byte, 1 = short, 2 = long) */
2118 FALSE, /* pc_relative */
2120 complain_overflow_dont, /* complain_on_overflow */
2121 ppc64_elf_ha_reloc, /* special_function */
2122 "R_PPC64_ADDR16_HIGHA", /* name */
2123 FALSE, /* partial_inplace */
2125 0xffff, /* dst_mask */
2126 FALSE), /* pcrel_offset */
2128 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2129 HOWTO (R_PPC64_DTPREL16_HIGH,
2130 16, /* rightshift */
2131 1, /* size (0 = byte, 1 = short, 2 = long) */
2133 FALSE, /* pc_relative */
2135 complain_overflow_dont, /* complain_on_overflow */
2136 ppc64_elf_unhandled_reloc, /* special_function */
2137 "R_PPC64_DTPREL16_HIGH", /* name */
2138 FALSE, /* partial_inplace */
2140 0xffff, /* dst_mask */
2141 FALSE), /* pcrel_offset */
2143 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2144 HOWTO (R_PPC64_DTPREL16_HIGHA,
2145 16, /* rightshift */
2146 1, /* size (0 = byte, 1 = short, 2 = long) */
2148 FALSE, /* pc_relative */
2150 complain_overflow_dont, /* complain_on_overflow */
2151 ppc64_elf_unhandled_reloc, /* special_function */
2152 "R_PPC64_DTPREL16_HIGHA", /* name */
2153 FALSE, /* partial_inplace */
2155 0xffff, /* dst_mask */
2156 FALSE), /* pcrel_offset */
2158 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2159 HOWTO (R_PPC64_TPREL16_HIGH,
2160 16, /* rightshift */
2161 1, /* size (0 = byte, 1 = short, 2 = long) */
2163 FALSE, /* pc_relative */
2165 complain_overflow_dont, /* complain_on_overflow */
2166 ppc64_elf_unhandled_reloc, /* special_function */
2167 "R_PPC64_TPREL16_HIGH", /* name */
2168 FALSE, /* partial_inplace */
2170 0xffff, /* dst_mask */
2171 FALSE), /* pcrel_offset */
2173 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2174 HOWTO (R_PPC64_TPREL16_HIGHA,
2175 16, /* rightshift */
2176 1, /* size (0 = byte, 1 = short, 2 = long) */
2178 FALSE, /* pc_relative */
2180 complain_overflow_dont, /* complain_on_overflow */
2181 ppc64_elf_unhandled_reloc, /* special_function */
2182 "R_PPC64_TPREL16_HIGHA", /* name */
2183 FALSE, /* partial_inplace */
2185 0xffff, /* dst_mask */
2186 FALSE), /* pcrel_offset */
2188 /* Marker reloc on ELFv2 large-model function entry. */
2189 HOWTO (R_PPC64_ENTRY,
2191 2, /* size (0 = byte, 1 = short, 2 = long) */
2193 FALSE, /* pc_relative */
2195 complain_overflow_dont, /* complain_on_overflow */
2196 bfd_elf_generic_reloc, /* special_function */
2197 "R_PPC64_ENTRY", /* name */
2198 FALSE, /* partial_inplace */
2201 FALSE), /* pcrel_offset */
2203 /* Like ADDR64, but use local entry point of function. */
2204 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2206 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2208 FALSE, /* pc_relative */
2210 complain_overflow_dont, /* complain_on_overflow */
2211 bfd_elf_generic_reloc, /* special_function */
2212 "R_PPC64_ADDR64_LOCAL", /* name */
2213 FALSE, /* partial_inplace */
2215 ONES (64), /* dst_mask */
2216 FALSE), /* pcrel_offset */
2218 /* GNU extension to record C++ vtable hierarchy. */
2219 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2221 0, /* size (0 = byte, 1 = short, 2 = long) */
2223 FALSE, /* pc_relative */
2225 complain_overflow_dont, /* complain_on_overflow */
2226 NULL, /* special_function */
2227 "R_PPC64_GNU_VTINHERIT", /* name */
2228 FALSE, /* partial_inplace */
2231 FALSE), /* pcrel_offset */
2233 /* GNU extension to record C++ vtable member usage. */
2234 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2236 0, /* size (0 = byte, 1 = short, 2 = long) */
2238 FALSE, /* pc_relative */
2240 complain_overflow_dont, /* complain_on_overflow */
2241 NULL, /* special_function */
2242 "R_PPC64_GNU_VTENTRY", /* name */
2243 FALSE, /* partial_inplace */
2246 FALSE), /* pcrel_offset */
2250 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2254 ppc_howto_init (void)
2256 unsigned int i, type;
2258 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2260 type = ppc64_elf_howto_raw[i].type;
2261 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
2262 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2266 static reloc_howto_type *
2267 ppc64_elf_reloc_type_lookup (bfd *abfd,
2268 bfd_reloc_code_real_type code)
2270 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2272 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2273 /* Initialize howto table if needed. */
2279 /* xgettext:c-format */
2280 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code);
2281 bfd_set_error (bfd_error_bad_value);
2284 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2286 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2288 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2290 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2292 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2294 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2296 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2298 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2300 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2302 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2304 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2306 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2308 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2310 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2312 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2314 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2316 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2318 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2320 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2322 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2324 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2326 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2328 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2330 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2332 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2334 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2336 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2338 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2340 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2342 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2344 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2346 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2348 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2350 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2352 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2354 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2356 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2358 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2360 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2362 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2364 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2366 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2368 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2370 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2372 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2374 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2376 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2378 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2380 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2382 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2384 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2386 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2388 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2390 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2392 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2394 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2396 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2398 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2400 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2402 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2404 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2406 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2408 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2410 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2412 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2414 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2416 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2418 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2420 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2422 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2424 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2426 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2428 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2430 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2432 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2434 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2436 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2438 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2440 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2442 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2444 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2446 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2448 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2450 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2452 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2454 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2456 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2458 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2460 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2462 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2464 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2466 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2468 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2470 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2472 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2474 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2476 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2478 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2480 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2482 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2484 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2486 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2488 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2490 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2492 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2494 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2496 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2498 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2500 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2502 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2504 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2506 case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA;
2508 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2510 case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
2512 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2514 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2516 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2520 return ppc64_elf_howto_table[r];
2523 static reloc_howto_type *
2524 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2529 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2530 if (ppc64_elf_howto_raw[i].name != NULL
2531 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2532 return &ppc64_elf_howto_raw[i];
2538 /* Set the howto pointer for a PowerPC ELF reloc. */
2541 ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
2542 Elf_Internal_Rela *dst)
2546 /* Initialize howto table if needed. */
2547 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2550 type = ELF64_R_TYPE (dst->r_info);
2551 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
2553 /* xgettext:c-format */
2554 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2556 bfd_set_error (bfd_error_bad_value);
2559 cache_ptr->howto = ppc64_elf_howto_table[type];
2560 if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL)
2562 /* xgettext:c-format */
2563 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2565 bfd_set_error (bfd_error_bad_value);
2572 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2574 static bfd_reloc_status_type
2575 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2576 void *data, asection *input_section,
2577 bfd *output_bfd, char **error_message)
2579 enum elf_ppc64_reloc_type r_type;
2581 bfd_size_type octets;
2584 /* If this is a relocatable link (output_bfd test tells us), just
2585 call the generic function. Any adjustment will be done at final
2587 if (output_bfd != NULL)
2588 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2589 input_section, output_bfd, error_message);
2591 /* Adjust the addend for sign extension of the low 16 bits.
2592 We won't actually be using the low 16 bits, so trashing them
2594 reloc_entry->addend += 0x8000;
2595 r_type = reloc_entry->howto->type;
2596 if (r_type != R_PPC64_REL16DX_HA)
2597 return bfd_reloc_continue;
2600 if (!bfd_is_com_section (symbol->section))
2601 value = symbol->value;
2602 value += (reloc_entry->addend
2603 + symbol->section->output_offset
2604 + symbol->section->output_section->vma);
2605 value -= (reloc_entry->address
2606 + input_section->output_offset
2607 + input_section->output_section->vma);
2608 value = (bfd_signed_vma) value >> 16;
2610 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2611 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2613 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2614 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2615 if (value + 0x8000 > 0xffff)
2616 return bfd_reloc_overflow;
2617 return bfd_reloc_ok;
2620 static bfd_reloc_status_type
2621 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2622 void *data, asection *input_section,
2623 bfd *output_bfd, char **error_message)
2625 if (output_bfd != NULL)
2626 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2627 input_section, output_bfd, error_message);
2629 if (strcmp (symbol->section->name, ".opd") == 0
2630 && (symbol->section->owner->flags & DYNAMIC) == 0)
2632 bfd_vma dest = opd_entry_value (symbol->section,
2633 symbol->value + reloc_entry->addend,
2635 if (dest != (bfd_vma) -1)
2636 reloc_entry->addend = dest - (symbol->value
2637 + symbol->section->output_section->vma
2638 + symbol->section->output_offset);
2642 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2644 if (symbol->section->owner != abfd
2645 && symbol->section->owner != NULL
2646 && abiversion (symbol->section->owner) >= 2)
2650 for (i = 0; i < symbol->section->owner->symcount; ++i)
2652 asymbol *symdef = symbol->section->owner->outsymbols[i];
2654 if (strcmp (symdef->name, symbol->name) == 0)
2656 elfsym = (elf_symbol_type *) symdef;
2662 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2664 return bfd_reloc_continue;
2667 static bfd_reloc_status_type
2668 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2669 void *data, asection *input_section,
2670 bfd *output_bfd, char **error_message)
2673 enum elf_ppc64_reloc_type r_type;
2674 bfd_size_type octets;
2675 /* Assume 'at' branch hints. */
2676 bfd_boolean is_isa_v2 = TRUE;
2678 /* If this is a relocatable link (output_bfd test tells us), just
2679 call the generic function. Any adjustment will be done at final
2681 if (output_bfd != NULL)
2682 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2683 input_section, output_bfd, error_message);
2685 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2686 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2687 insn &= ~(0x01 << 21);
2688 r_type = reloc_entry->howto->type;
2689 if (r_type == R_PPC64_ADDR14_BRTAKEN
2690 || r_type == R_PPC64_REL14_BRTAKEN)
2691 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2695 /* Set 'a' bit. This is 0b00010 in BO field for branch
2696 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2697 for branch on CTR insns (BO == 1a00t or 1a01t). */
2698 if ((insn & (0x14 << 21)) == (0x04 << 21))
2700 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2710 if (!bfd_is_com_section (symbol->section))
2711 target = symbol->value;
2712 target += symbol->section->output_section->vma;
2713 target += symbol->section->output_offset;
2714 target += reloc_entry->addend;
2716 from = (reloc_entry->address
2717 + input_section->output_offset
2718 + input_section->output_section->vma);
2720 /* Invert 'y' bit if not the default. */
2721 if ((bfd_signed_vma) (target - from) < 0)
2724 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2726 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2727 input_section, output_bfd, error_message);
2730 static bfd_reloc_status_type
2731 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2732 void *data, asection *input_section,
2733 bfd *output_bfd, char **error_message)
2735 /* If this is a relocatable link (output_bfd test tells us), just
2736 call the generic function. Any adjustment will be done at final
2738 if (output_bfd != NULL)
2739 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2740 input_section, output_bfd, error_message);
2742 /* Subtract the symbol section base address. */
2743 reloc_entry->addend -= symbol->section->output_section->vma;
2744 return bfd_reloc_continue;
2747 static bfd_reloc_status_type
2748 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2749 void *data, asection *input_section,
2750 bfd *output_bfd, char **error_message)
2752 /* If this is a relocatable link (output_bfd test tells us), just
2753 call the generic function. Any adjustment will be done at final
2755 if (output_bfd != NULL)
2756 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2757 input_section, output_bfd, error_message);
2759 /* Subtract the symbol section base address. */
2760 reloc_entry->addend -= symbol->section->output_section->vma;
2762 /* Adjust the addend for sign extension of the low 16 bits. */
2763 reloc_entry->addend += 0x8000;
2764 return bfd_reloc_continue;
2767 static bfd_reloc_status_type
2768 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2769 void *data, asection *input_section,
2770 bfd *output_bfd, char **error_message)
2774 /* If this is a relocatable link (output_bfd test tells us), just
2775 call the generic function. Any adjustment will be done at final
2777 if (output_bfd != NULL)
2778 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2779 input_section, output_bfd, error_message);
2781 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2783 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2785 /* Subtract the TOC base address. */
2786 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2787 return bfd_reloc_continue;
2790 static bfd_reloc_status_type
2791 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2792 void *data, asection *input_section,
2793 bfd *output_bfd, char **error_message)
2797 /* If this is a relocatable link (output_bfd test tells us), just
2798 call the generic function. Any adjustment will be done at final
2800 if (output_bfd != NULL)
2801 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2802 input_section, output_bfd, error_message);
2804 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2806 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2808 /* Subtract the TOC base address. */
2809 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2811 /* Adjust the addend for sign extension of the low 16 bits. */
2812 reloc_entry->addend += 0x8000;
2813 return bfd_reloc_continue;
2816 static bfd_reloc_status_type
2817 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2818 void *data, asection *input_section,
2819 bfd *output_bfd, char **error_message)
2822 bfd_size_type octets;
2824 /* If this is a relocatable link (output_bfd test tells us), just
2825 call the generic function. Any adjustment will be done at final
2827 if (output_bfd != NULL)
2828 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2829 input_section, output_bfd, error_message);
2831 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2833 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2835 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2836 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2837 return bfd_reloc_ok;
2840 static bfd_reloc_status_type
2841 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2842 void *data, asection *input_section,
2843 bfd *output_bfd, char **error_message)
2845 /* If this is a relocatable link (output_bfd test tells us), just
2846 call the generic function. Any adjustment will be done at final
2848 if (output_bfd != NULL)
2849 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2850 input_section, output_bfd, error_message);
2852 if (error_message != NULL)
2854 static char buf[60];
2855 sprintf (buf, "generic linker can't handle %s",
2856 reloc_entry->howto->name);
2857 *error_message = buf;
2859 return bfd_reloc_dangerous;
2862 /* Track GOT entries needed for a given symbol. We might need more
2863 than one got entry per symbol. */
2866 struct got_entry *next;
2868 /* The symbol addend that we'll be placing in the GOT. */
2871 /* Unlike other ELF targets, we use separate GOT entries for the same
2872 symbol referenced from different input files. This is to support
2873 automatic multiple TOC/GOT sections, where the TOC base can vary
2874 from one input file to another. After partitioning into TOC groups
2875 we merge entries within the group.
2877 Point to the BFD owning this GOT entry. */
2880 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2881 TLS_TPREL or TLS_DTPREL for tls entries. */
2882 unsigned char tls_type;
2884 /* Non-zero if got.ent points to real entry. */
2885 unsigned char is_indirect;
2887 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2890 bfd_signed_vma refcount;
2892 struct got_entry *ent;
2896 /* The same for PLT. */
2899 struct plt_entry *next;
2905 bfd_signed_vma refcount;
2910 struct ppc64_elf_obj_tdata
2912 struct elf_obj_tdata elf;
2914 /* Shortcuts to dynamic linker sections. */
2918 /* Used during garbage collection. We attach global symbols defined
2919 on removed .opd entries to this section so that the sym is removed. */
2920 asection *deleted_section;
2922 /* TLS local dynamic got entry handling. Support for multiple GOT
2923 sections means we potentially need one of these for each input bfd. */
2924 struct got_entry tlsld_got;
2927 /* A copy of relocs before they are modified for --emit-relocs. */
2928 Elf_Internal_Rela *relocs;
2930 /* Section contents. */
2934 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2935 the reloc to be in the range -32768 to 32767. */
2936 unsigned int has_small_toc_reloc : 1;
2938 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2939 instruction not one we handle. */
2940 unsigned int unexpected_toc_insn : 1;
2943 #define ppc64_elf_tdata(bfd) \
2944 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2946 #define ppc64_tlsld_got(bfd) \
2947 (&ppc64_elf_tdata (bfd)->tlsld_got)
2949 #define is_ppc64_elf(bfd) \
2950 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2951 && elf_object_id (bfd) == PPC64_ELF_DATA)
2953 /* Override the generic function because we store some extras. */
2956 ppc64_elf_mkobject (bfd *abfd)
2958 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2962 /* Fix bad default arch selected for a 64 bit input bfd when the
2963 default is 32 bit. Also select arch based on apuinfo. */
2966 ppc64_elf_object_p (bfd *abfd)
2968 if (!abfd->arch_info->the_default)
2971 if (abfd->arch_info->bits_per_word == 32)
2973 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2975 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2977 /* Relies on arch after 32 bit default being 64 bit default. */
2978 abfd->arch_info = abfd->arch_info->next;
2979 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2982 return _bfd_elf_ppc_set_arch (abfd);
2985 /* Support for core dump NOTE sections. */
2988 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2990 size_t offset, size;
2992 if (note->descsz != 504)
2996 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2999 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3005 /* Make a ".reg/999" section. */
3006 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3007 size, note->descpos + offset);
3011 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3013 if (note->descsz != 136)
3016 elf_tdata (abfd)->core->pid
3017 = bfd_get_32 (abfd, note->descdata + 24);
3018 elf_tdata (abfd)->core->program
3019 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3020 elf_tdata (abfd)->core->command
3021 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3027 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
3040 va_start (ap, note_type);
3041 memset (data, 0, sizeof (data));
3042 strncpy (data + 40, va_arg (ap, const char *), 16);
3043 strncpy (data + 56, va_arg (ap, const char *), 80);
3045 return elfcore_write_note (abfd, buf, bufsiz,
3046 "CORE", note_type, data, sizeof (data));
3057 va_start (ap, note_type);
3058 memset (data, 0, 112);
3059 pid = va_arg (ap, long);
3060 bfd_put_32 (abfd, pid, data + 32);
3061 cursig = va_arg (ap, int);
3062 bfd_put_16 (abfd, cursig, data + 12);
3063 greg = va_arg (ap, const void *);
3064 memcpy (data + 112, greg, 384);
3065 memset (data + 496, 0, 8);
3067 return elfcore_write_note (abfd, buf, bufsiz,
3068 "CORE", note_type, data, sizeof (data));
3073 /* Add extra PPC sections. */
3075 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
3077 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
3078 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3079 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3080 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3081 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3082 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3083 { NULL, 0, 0, 0, 0 }
3086 enum _ppc64_sec_type {
3092 struct _ppc64_elf_section_data
3094 struct bfd_elf_section_data elf;
3098 /* An array with one entry for each opd function descriptor,
3099 and some spares since opd entries may be either 16 or 24 bytes. */
3100 #define OPD_NDX(OFF) ((OFF) >> 4)
3101 struct _opd_sec_data
3103 /* Points to the function code section for local opd entries. */
3104 asection **func_sec;
3106 /* After editing .opd, adjust references to opd local syms. */
3110 /* An array for toc sections, indexed by offset/8. */
3111 struct _toc_sec_data
3113 /* Specifies the relocation symbol index used at a given toc offset. */
3116 /* And the relocation addend. */
3121 enum _ppc64_sec_type sec_type:2;
3123 /* Flag set when small branches are detected. Used to
3124 select suitable defaults for the stub group size. */
3125 unsigned int has_14bit_branch:1;
3127 /* Flag set when PLTCALL relocs are detected. */
3128 unsigned int has_pltcall:1;
3131 #define ppc64_elf_section_data(sec) \
3132 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3135 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
3137 if (!sec->used_by_bfd)
3139 struct _ppc64_elf_section_data *sdata;
3140 bfd_size_type amt = sizeof (*sdata);
3142 sdata = bfd_zalloc (abfd, amt);
3145 sec->used_by_bfd = sdata;
3148 return _bfd_elf_new_section_hook (abfd, sec);
3151 static struct _opd_sec_data *
3152 get_opd_info (asection * sec)
3155 && ppc64_elf_section_data (sec) != NULL
3156 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3157 return &ppc64_elf_section_data (sec)->u.opd;
3161 /* Parameters for the qsort hook. */
3162 static bfd_boolean synthetic_relocatable;
3163 static asection *synthetic_opd;
3165 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3168 compare_symbols (const void *ap, const void *bp)
3170 const asymbol *a = * (const asymbol **) ap;
3171 const asymbol *b = * (const asymbol **) bp;
3173 /* Section symbols first. */
3174 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3176 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3179 /* then .opd symbols. */
3180 if (synthetic_opd != NULL)
3182 if (strcmp (a->section->name, ".opd") == 0
3183 && strcmp (b->section->name, ".opd") != 0)
3185 if (strcmp (a->section->name, ".opd") != 0
3186 && strcmp (b->section->name, ".opd") == 0)
3190 /* then other code symbols. */
3191 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3192 == (SEC_CODE | SEC_ALLOC)
3193 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3194 != (SEC_CODE | SEC_ALLOC))
3197 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3198 != (SEC_CODE | SEC_ALLOC)
3199 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3200 == (SEC_CODE | SEC_ALLOC))
3203 if (synthetic_relocatable)
3205 if (a->section->id < b->section->id)
3208 if (a->section->id > b->section->id)
3212 if (a->value + a->section->vma < b->value + b->section->vma)
3215 if (a->value + a->section->vma > b->value + b->section->vma)
3218 /* For syms with the same value, prefer strong dynamic global function
3219 syms over other syms. */
3220 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3223 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3226 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3229 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3232 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3235 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3238 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3241 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3247 /* Search SYMS for a symbol of the given VALUE. */
3250 sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
3254 if (id == (unsigned) -1)
3258 mid = (lo + hi) >> 1;
3259 if (syms[mid]->value + syms[mid]->section->vma < value)
3261 else if (syms[mid]->value + syms[mid]->section->vma > value)
3271 mid = (lo + hi) >> 1;
3272 if (syms[mid]->section->id < id)
3274 else if (syms[mid]->section->id > id)
3276 else if (syms[mid]->value < value)
3278 else if (syms[mid]->value > value)
3288 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3290 bfd_vma vma = *(bfd_vma *) ptr;
3291 return ((section->flags & SEC_ALLOC) != 0
3292 && section->vma <= vma
3293 && vma < section->vma + section->size);
3296 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3297 entry syms. Also generate @plt symbols for the glink branch table.
3298 Returns count of synthetic symbols in RET or -1 on error. */
3301 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3302 long static_count, asymbol **static_syms,
3303 long dyn_count, asymbol **dyn_syms,
3309 size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3310 asection *opd = NULL;
3311 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3313 int abi = abiversion (abfd);
3319 opd = bfd_get_section_by_name (abfd, ".opd");
3320 if (opd == NULL && abi == 1)
3332 symcount = static_count;
3334 symcount += dyn_count;
3338 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3342 if (!relocatable && static_count != 0 && dyn_count != 0)
3344 /* Use both symbol tables. */
3345 memcpy (syms, static_syms, static_count * sizeof (*syms));
3346 memcpy (syms + static_count, dyn_syms,
3347 (dyn_count + 1) * sizeof (*syms));
3349 else if (!relocatable && static_count == 0)
3350 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3352 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3354 /* Trim uninteresting symbols. Interesting symbols are section,
3355 function, and notype symbols. */
3356 for (i = 0, j = 0; i < symcount; ++i)
3357 if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL
3358 | BSF_RELC | BSF_SRELC)) == 0)
3359 syms[j++] = syms[i];
3362 synthetic_relocatable = relocatable;
3363 synthetic_opd = opd;
3364 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3366 if (!relocatable && symcount > 1)
3368 /* Trim duplicate syms, since we may have merged the normal and
3369 dynamic symbols. Actually, we only care about syms that have
3370 different values, so trim any with the same value. */
3371 for (i = 1, j = 1; i < symcount; ++i)
3372 if (syms[i - 1]->value + syms[i - 1]->section->vma
3373 != syms[i]->value + syms[i]->section->vma)
3374 syms[j++] = syms[i];
3379 /* Note that here and in compare_symbols we can't compare opd and
3380 sym->section directly. With separate debug info files, the
3381 symbols will be extracted from the debug file while abfd passed
3382 to this function is the real binary. */
3383 if (strcmp (syms[i]->section->name, ".opd") == 0)
3387 for (; i < symcount; ++i)
3388 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC
3389 | SEC_THREAD_LOCAL))
3390 != (SEC_CODE | SEC_ALLOC))
3391 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3395 for (; i < symcount; ++i)
3396 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3400 for (; i < symcount; ++i)
3401 if (strcmp (syms[i]->section->name, ".opd") != 0)
3405 for (; i < symcount; ++i)
3406 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3407 != (SEC_CODE | SEC_ALLOC))
3415 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3420 if (opdsymend == secsymend)
3423 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3424 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3428 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3435 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3439 while (r < opd->relocation + relcount
3440 && r->address < syms[i]->value + opd->vma)
3443 if (r == opd->relocation + relcount)
3446 if (r->address != syms[i]->value + opd->vma)
3449 if (r->howto->type != R_PPC64_ADDR64)
3452 sym = *r->sym_ptr_ptr;
3453 if (!sym_exists_at (syms, opdsymend, symcount,
3454 sym->section->id, sym->value + r->addend))
3457 size += sizeof (asymbol);
3458 size += strlen (syms[i]->name) + 2;
3464 s = *ret = bfd_malloc (size);
3471 names = (char *) (s + count);
3473 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3477 while (r < opd->relocation + relcount
3478 && r->address < syms[i]->value + opd->vma)
3481 if (r == opd->relocation + relcount)
3484 if (r->address != syms[i]->value + opd->vma)
3487 if (r->howto->type != R_PPC64_ADDR64)
3490 sym = *r->sym_ptr_ptr;
3491 if (!sym_exists_at (syms, opdsymend, symcount,
3492 sym->section->id, sym->value + r->addend))
3497 s->flags |= BSF_SYNTHETIC;
3498 s->section = sym->section;
3499 s->value = sym->value + r->addend;
3502 len = strlen (syms[i]->name);
3503 memcpy (names, syms[i]->name, len + 1);
3505 /* Have udata.p point back to the original symbol this
3506 synthetic symbol was derived from. */
3507 s->udata.p = syms[i];
3514 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3515 bfd_byte *contents = NULL;
3517 size_t plt_count = 0;
3518 bfd_vma glink_vma = 0, resolv_vma = 0;
3519 asection *dynamic, *glink = NULL, *relplt = NULL;
3522 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3524 free_contents_and_exit_err:
3526 free_contents_and_exit:
3533 for (i = secsymend; i < opdsymend; ++i)
3537 /* Ignore bogus symbols. */
3538 if (syms[i]->value > opd->size - 8)
3541 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3542 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3545 size += sizeof (asymbol);
3546 size += strlen (syms[i]->name) + 2;
3550 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3552 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3554 bfd_byte *dynbuf, *extdyn, *extdynend;
3556 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3558 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3559 goto free_contents_and_exit_err;
3561 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3562 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3565 extdynend = extdyn + dynamic->size;
3566 for (; extdyn < extdynend; extdyn += extdynsize)
3568 Elf_Internal_Dyn dyn;
3569 (*swap_dyn_in) (abfd, extdyn, &dyn);
3571 if (dyn.d_tag == DT_NULL)
3574 if (dyn.d_tag == DT_PPC64_GLINK)
3576 /* The first glink stub starts at DT_PPC64_GLINK plus 32.
3577 See comment in ppc64_elf_finish_dynamic_sections. */
3578 glink_vma = dyn.d_un.d_val + 8 * 4;
3579 /* The .glink section usually does not survive the final
3580 link; search for the section (usually .text) where the
3581 glink stubs now reside. */
3582 glink = bfd_sections_find_if (abfd, section_covers_vma,
3593 /* Determine __glink trampoline by reading the relative branch
3594 from the first glink stub. */
3596 unsigned int off = 0;
3598 while (bfd_get_section_contents (abfd, glink, buf,
3599 glink_vma + off - glink->vma, 4))
3601 unsigned int insn = bfd_get_32 (abfd, buf);
3603 if ((insn & ~0x3fffffc) == 0)
3605 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3614 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3616 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3619 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3620 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3621 goto free_contents_and_exit_err;
3623 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3624 size += plt_count * sizeof (asymbol);
3626 p = relplt->relocation;
3627 for (i = 0; i < plt_count; i++, p++)
3629 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3631 size += sizeof ("+0x") - 1 + 16;
3637 goto free_contents_and_exit;
3638 s = *ret = bfd_malloc (size);
3640 goto free_contents_and_exit_err;
3642 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3644 for (i = secsymend; i < opdsymend; ++i)
3648 if (syms[i]->value > opd->size - 8)
3651 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3652 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3656 asection *sec = abfd->sections;
3663 size_t mid = (lo + hi) >> 1;
3664 if (syms[mid]->section->vma < ent)
3666 else if (syms[mid]->section->vma > ent)
3670 sec = syms[mid]->section;
3675 if (lo >= hi && lo > codesecsym)
3676 sec = syms[lo - 1]->section;
3678 for (; sec != NULL; sec = sec->next)
3682 /* SEC_LOAD may not be set if SEC is from a separate debug
3684 if ((sec->flags & SEC_ALLOC) == 0)
3686 if ((sec->flags & SEC_CODE) != 0)
3689 s->flags |= BSF_SYNTHETIC;
3690 s->value = ent - s->section->vma;
3693 len = strlen (syms[i]->name);
3694 memcpy (names, syms[i]->name, len + 1);
3696 /* Have udata.p point back to the original symbol this
3697 synthetic symbol was derived from. */
3698 s->udata.p = syms[i];
3704 if (glink != NULL && relplt != NULL)
3708 /* Add a symbol for the main glink trampoline. */
3709 memset (s, 0, sizeof *s);
3711 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3713 s->value = resolv_vma - glink->vma;
3715 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3716 names += sizeof ("__glink_PLTresolve");
3721 /* FIXME: It would be very much nicer to put sym@plt on the
3722 stub rather than on the glink branch table entry. The
3723 objdump disassembler would then use a sensible symbol
3724 name on plt calls. The difficulty in doing so is
3725 a) finding the stubs, and,
3726 b) matching stubs against plt entries, and,
3727 c) there can be multiple stubs for a given plt entry.
3729 Solving (a) could be done by code scanning, but older
3730 ppc64 binaries used different stubs to current code.
3731 (b) is the tricky one since you need to known the toc
3732 pointer for at least one function that uses a pic stub to
3733 be able to calculate the plt address referenced.
3734 (c) means gdb would need to set multiple breakpoints (or
3735 find the glink branch itself) when setting breakpoints
3736 for pending shared library loads. */
3737 p = relplt->relocation;
3738 for (i = 0; i < plt_count; i++, p++)
3742 *s = **p->sym_ptr_ptr;
3743 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3744 we are defining a symbol, ensure one of them is set. */
3745 if ((s->flags & BSF_LOCAL) == 0)
3746 s->flags |= BSF_GLOBAL;
3747 s->flags |= BSF_SYNTHETIC;
3749 s->value = glink_vma - glink->vma;
3752 len = strlen ((*p->sym_ptr_ptr)->name);
3753 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3757 memcpy (names, "+0x", sizeof ("+0x") - 1);
3758 names += sizeof ("+0x") - 1;
3759 bfd_sprintf_vma (abfd, names, p->addend);
3760 names += strlen (names);
3762 memcpy (names, "@plt", sizeof ("@plt"));
3763 names += sizeof ("@plt");
3783 /* The following functions are specific to the ELF linker, while
3784 functions above are used generally. Those named ppc64_elf_* are
3785 called by the main ELF linker code. They appear in this file more
3786 or less in the order in which they are called. eg.
3787 ppc64_elf_check_relocs is called early in the link process,
3788 ppc64_elf_finish_dynamic_sections is one of the last functions
3791 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3792 functions have both a function code symbol and a function descriptor
3793 symbol. A call to foo in a relocatable object file looks like:
3800 The function definition in another object file might be:
3804 . .quad .TOC.@tocbase
3810 When the linker resolves the call during a static link, the branch
3811 unsurprisingly just goes to .foo and the .opd information is unused.
3812 If the function definition is in a shared library, things are a little
3813 different: The call goes via a plt call stub, the opd information gets
3814 copied to the plt, and the linker patches the nop.
3822 . std 2,40(1) # in practice, the call stub
3823 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3824 . addi 11,11,Lfoo@toc@l # this is the general idea
3832 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3834 The "reloc ()" notation is supposed to indicate that the linker emits
3835 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3838 What are the difficulties here? Well, firstly, the relocations
3839 examined by the linker in check_relocs are against the function code
3840 sym .foo, while the dynamic relocation in the plt is emitted against
3841 the function descriptor symbol, foo. Somewhere along the line, we need
3842 to carefully copy dynamic link information from one symbol to the other.
3843 Secondly, the generic part of the elf linker will make .foo a dynamic
3844 symbol as is normal for most other backends. We need foo dynamic
3845 instead, at least for an application final link. However, when
3846 creating a shared library containing foo, we need to have both symbols
3847 dynamic so that references to .foo are satisfied during the early
3848 stages of linking. Otherwise the linker might decide to pull in a
3849 definition from some other object, eg. a static library.
3851 Update: As of August 2004, we support a new convention. Function
3852 calls may use the function descriptor symbol, ie. "bl foo". This
3853 behaves exactly as "bl .foo". */
3855 /* Of those relocs that might be copied as dynamic relocs, this
3856 function selects those that must be copied when linking a shared
3857 library or PIE, even when the symbol is local. */
3860 must_be_dyn_reloc (struct bfd_link_info *info,
3861 enum elf_ppc64_reloc_type r_type)
3866 /* Only relative relocs can be resolved when the object load
3867 address isn't fixed. DTPREL64 is excluded because the
3868 dynamic linker needs to differentiate global dynamic from
3869 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3877 case R_PPC64_TPREL16:
3878 case R_PPC64_TPREL16_LO:
3879 case R_PPC64_TPREL16_HI:
3880 case R_PPC64_TPREL16_HA:
3881 case R_PPC64_TPREL16_DS:
3882 case R_PPC64_TPREL16_LO_DS:
3883 case R_PPC64_TPREL16_HIGH:
3884 case R_PPC64_TPREL16_HIGHA:
3885 case R_PPC64_TPREL16_HIGHER:
3886 case R_PPC64_TPREL16_HIGHERA:
3887 case R_PPC64_TPREL16_HIGHEST:
3888 case R_PPC64_TPREL16_HIGHESTA:
3889 case R_PPC64_TPREL64:
3890 /* These relocations are relative but in a shared library the
3891 linker doesn't know the thread pointer base. */
3892 return bfd_link_dll (info);
3896 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3897 copying dynamic variables from a shared lib into an app's dynbss
3898 section, and instead use a dynamic relocation to point into the
3899 shared lib. With code that gcc generates, it's vital that this be
3900 enabled; In the PowerPC64 ABI, the address of a function is actually
3901 the address of a function descriptor, which resides in the .opd
3902 section. gcc uses the descriptor directly rather than going via the
3903 GOT as some other ABI's do, which means that initialized function
3904 pointers must reference the descriptor. Thus, a function pointer
3905 initialized to the address of a function in a shared library will
3906 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3907 redefines the function descriptor symbol to point to the copy. This
3908 presents a problem as a plt entry for that function is also
3909 initialized from the function descriptor symbol and the copy reloc
3910 may not be initialized first. */
3911 #define ELIMINATE_COPY_RELOCS 1
3913 /* Section name for stubs is the associated section name plus this
3915 #define STUB_SUFFIX ".stub"
3918 ppc_stub_long_branch:
3919 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3920 destination, but a 24 bit branch in a stub section will reach.
3923 ppc_stub_plt_branch:
3924 Similar to the above, but a 24 bit branch in the stub section won't
3925 reach its destination.
3926 . addis %r11,%r2,xxx@toc@ha
3927 . ld %r12,xxx@toc@l(%r11)
3932 Used to call a function in a shared library. If it so happens that
3933 the plt entry referenced crosses a 64k boundary, then an extra
3934 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3936 . addis %r11,%r2,xxx@toc@ha
3937 . ld %r12,xxx+0@toc@l(%r11)
3939 . ld %r2,xxx+8@toc@l(%r11)
3940 . ld %r11,xxx+16@toc@l(%r11)
3943 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3944 code to adjust the value and save r2 to support multiple toc sections.
3945 A ppc_stub_long_branch with an r2 offset looks like:
3947 . addis %r2,%r2,off@ha
3948 . addi %r2,%r2,off@l
3951 A ppc_stub_plt_branch with an r2 offset looks like:
3953 . addis %r11,%r2,xxx@toc@ha
3954 . ld %r12,xxx@toc@l(%r11)
3955 . addis %r2,%r2,off@ha
3956 . addi %r2,%r2,off@l
3960 In cases where the "addis" instruction would add zero, the "addis" is
3961 omitted and following instructions modified slightly in some cases.
3964 enum ppc_stub_type {
3966 ppc_stub_long_branch,
3967 ppc_stub_long_branch_r2off,
3968 ppc_stub_plt_branch,
3969 ppc_stub_plt_branch_r2off,
3971 ppc_stub_plt_call_r2save,
3972 ppc_stub_global_entry,
3976 /* Information on stub grouping. */
3979 /* The stub section. */
3981 /* This is the section to which stubs in the group will be attached. */
3984 struct map_stub *next;
3985 /* Whether to emit a copy of register save/restore functions in this
3988 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3989 or -1u if no such stub with bctrl exists. */
3990 unsigned int tls_get_addr_opt_bctrl;
3993 struct ppc_stub_hash_entry {
3995 /* Base hash table entry structure. */
3996 struct bfd_hash_entry root;
3998 enum ppc_stub_type stub_type;
4000 /* Group information. */
4001 struct map_stub *group;
4003 /* Offset within stub_sec of the beginning of this stub. */
4004 bfd_vma stub_offset;
4006 /* Given the symbol's value and its section we can determine its final
4007 value when building the stubs (so the stub knows where to jump. */
4008 bfd_vma target_value;
4009 asection *target_section;
4011 /* The symbol table entry, if any, that this was derived from. */
4012 struct ppc_link_hash_entry *h;
4013 struct plt_entry *plt_ent;
4016 unsigned char symtype;
4018 /* Symbol st_other. */
4019 unsigned char other;
4022 struct ppc_branch_hash_entry {
4024 /* Base hash table entry structure. */
4025 struct bfd_hash_entry root;
4027 /* Offset within branch lookup table. */
4028 unsigned int offset;
4030 /* Generation marker. */
4034 /* Used to track dynamic relocations for local symbols. */
4035 struct ppc_dyn_relocs
4037 struct ppc_dyn_relocs *next;
4039 /* The input section of the reloc. */
4042 /* Total number of relocs copied for the input section. */
4043 unsigned int count : 31;
4045 /* Whether this entry is for STT_GNU_IFUNC symbols. */
4046 unsigned int ifunc : 1;
4049 struct ppc_link_hash_entry
4051 struct elf_link_hash_entry elf;
4054 /* A pointer to the most recently used stub hash entry against this
4056 struct ppc_stub_hash_entry *stub_cache;
4058 /* A pointer to the next symbol starting with a '.' */
4059 struct ppc_link_hash_entry *next_dot_sym;
4062 /* Track dynamic relocs copied for this symbol. */
4063 struct elf_dyn_relocs *dyn_relocs;
4065 /* Link between function code and descriptor symbols. */
4066 struct ppc_link_hash_entry *oh;
4068 /* Flag function code and descriptor symbols. */
4069 unsigned int is_func:1;
4070 unsigned int is_func_descriptor:1;
4071 unsigned int fake:1;
4073 /* Whether global opd/toc sym has been adjusted or not.
4074 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4075 should be set for all globals defined in any opd/toc section. */
4076 unsigned int adjust_done:1;
4078 /* Set if this is an out-of-line register save/restore function,
4079 with non-standard calling convention. */
4080 unsigned int save_res:1;
4082 /* Set if a duplicate symbol with non-zero localentry is detected,
4083 even when the duplicate symbol does not provide a definition. */
4084 unsigned int non_zero_localentry:1;
4086 /* Contexts in which symbol is used in the GOT (or TOC).
4087 Bits are or'd into the mask as the corresponding relocs are
4088 encountered during check_relocs, with TLS_TLS being set when any
4089 of the other TLS bits are set. tls_optimize clears bits when
4090 optimizing to indicate the corresponding GOT entry type is not
4091 needed. If set, TLS_TLS is never cleared. tls_optimize may also
4092 set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a
4093 separate flag rather than setting TPREL just for convenience in
4094 distinguishing the two cases.
4095 These flags are also kept for local symbols. */
4096 #define TLS_TLS 1 /* Any TLS reloc. */
4097 #define TLS_GD 2 /* GD reloc. */
4098 #define TLS_LD 4 /* LD reloc. */
4099 #define TLS_TPREL 8 /* TPREL reloc, => IE. */
4100 #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */
4101 #define TLS_MARK 32 /* __tls_get_addr call marked. */
4102 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4103 #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */
4104 unsigned char tls_mask;
4106 /* The above field is also used to mark function symbols. In which
4107 case TLS_TLS will be 0. */
4108 #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */
4109 #define PLT_KEEP 4 /* inline plt call requires plt entry. */
4110 #define NON_GOT 256 /* local symbol plt, not stored. */
4113 /* ppc64 ELF linker hash table. */
4115 struct ppc_link_hash_table
4117 struct elf_link_hash_table elf;
4119 /* The stub hash table. */
4120 struct bfd_hash_table stub_hash_table;
4122 /* Another hash table for plt_branch stubs. */
4123 struct bfd_hash_table branch_hash_table;
4125 /* Hash table for function prologue tocsave. */
4126 htab_t tocsave_htab;
4128 /* Various options and other info passed from the linker. */
4129 struct ppc64_elf_params *params;
4131 /* The size of sec_info below. */
4132 unsigned int sec_info_arr_size;
4134 /* Per-section array of extra section info. Done this way rather
4135 than as part of ppc64_elf_section_data so we have the info for
4136 non-ppc64 sections. */
4139 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4144 /* The section group that this section belongs to. */
4145 struct map_stub *group;
4146 /* A temp section list pointer. */
4151 /* Linked list of groups. */
4152 struct map_stub *group;
4154 /* Temp used when calculating TOC pointers. */
4157 asection *toc_first_sec;
4159 /* Used when adding symbols. */
4160 struct ppc_link_hash_entry *dot_syms;
4162 /* Shortcuts to get to dynamic linker sections. */
4164 asection *global_entry;
4167 asection *relpltlocal;
4170 asection *glink_eh_frame;
4172 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4173 struct ppc_link_hash_entry *tls_get_addr;
4174 struct ppc_link_hash_entry *tls_get_addr_fd;
4176 /* The size of reliplt used by got entry relocs. */
4177 bfd_size_type got_reli_size;
4180 unsigned long stub_count[ppc_stub_global_entry];
4182 /* Number of stubs against global syms. */
4183 unsigned long stub_globals;
4185 /* Set if we're linking code with function descriptors. */
4186 unsigned int opd_abi:1;
4188 /* Support for multiple toc sections. */
4189 unsigned int do_multi_toc:1;
4190 unsigned int multi_toc_needed:1;
4191 unsigned int second_toc_pass:1;
4192 unsigned int do_toc_opt:1;
4194 /* Set if tls optimization is enabled. */
4195 unsigned int do_tls_opt:1;
4197 /* Set if inline plt calls should be converted to direct calls. */
4198 unsigned int can_convert_all_inline_plt:1;
4201 unsigned int stub_error:1;
4203 /* Whether func_desc_adjust needs to be run over symbols. */
4204 unsigned int need_func_desc_adj:1;
4206 /* Whether there exist local gnu indirect function resolvers,
4207 referenced by dynamic relocations. */
4208 unsigned int local_ifunc_resolver:1;
4209 unsigned int maybe_local_ifunc_resolver:1;
4211 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4212 unsigned int has_plt_localentry0:1;
4214 /* Incremented every time we size stubs. */
4215 unsigned int stub_iteration;
4217 /* Small local sym cache. */
4218 struct sym_cache sym_cache;
4221 /* Rename some of the generic section flags to better document how they
4224 /* Nonzero if this section has TLS related relocations. */
4225 #define has_tls_reloc sec_flg0
4227 /* Nonzero if this section has an old-style call to __tls_get_addr. */
4228 #define has_tls_get_addr_call sec_flg1
4230 /* Nonzero if this section has any toc or got relocs. */
4231 #define has_toc_reloc sec_flg2
4233 /* Nonzero if this section has a call to another section that uses
4235 #define makes_toc_func_call sec_flg3
4237 /* Recursion protection when determining above flag. */
4238 #define call_check_in_progress sec_flg4
4239 #define call_check_done sec_flg5
4241 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4243 #define ppc_hash_table(p) \
4244 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4245 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4247 #define ppc_stub_hash_lookup(table, string, create, copy) \
4248 ((struct ppc_stub_hash_entry *) \
4249 bfd_hash_lookup ((table), (string), (create), (copy)))
4251 #define ppc_branch_hash_lookup(table, string, create, copy) \
4252 ((struct ppc_branch_hash_entry *) \
4253 bfd_hash_lookup ((table), (string), (create), (copy)))
4255 /* Create an entry in the stub hash table. */
4257 static struct bfd_hash_entry *
4258 stub_hash_newfunc (struct bfd_hash_entry *entry,
4259 struct bfd_hash_table *table,
4262 /* Allocate the structure if it has not already been allocated by a
4266 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4271 /* Call the allocation method of the superclass. */
4272 entry = bfd_hash_newfunc (entry, table, string);
4275 struct ppc_stub_hash_entry *eh;
4277 /* Initialize the local fields. */
4278 eh = (struct ppc_stub_hash_entry *) entry;
4279 eh->stub_type = ppc_stub_none;
4281 eh->stub_offset = 0;
4282 eh->target_value = 0;
4283 eh->target_section = NULL;
4292 /* Create an entry in the branch hash table. */
4294 static struct bfd_hash_entry *
4295 branch_hash_newfunc (struct bfd_hash_entry *entry,
4296 struct bfd_hash_table *table,
4299 /* Allocate the structure if it has not already been allocated by a
4303 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4308 /* Call the allocation method of the superclass. */
4309 entry = bfd_hash_newfunc (entry, table, string);
4312 struct ppc_branch_hash_entry *eh;
4314 /* Initialize the local fields. */
4315 eh = (struct ppc_branch_hash_entry *) entry;
4323 /* Create an entry in a ppc64 ELF linker hash table. */
4325 static struct bfd_hash_entry *
4326 link_hash_newfunc (struct bfd_hash_entry *entry,
4327 struct bfd_hash_table *table,
4330 /* Allocate the structure if it has not already been allocated by a
4334 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4339 /* Call the allocation method of the superclass. */
4340 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4343 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4345 memset (&eh->u.stub_cache, 0,
4346 (sizeof (struct ppc_link_hash_entry)
4347 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4349 /* When making function calls, old ABI code references function entry
4350 points (dot symbols), while new ABI code references the function
4351 descriptor symbol. We need to make any combination of reference and
4352 definition work together, without breaking archive linking.
4354 For a defined function "foo" and an undefined call to "bar":
4355 An old object defines "foo" and ".foo", references ".bar" (possibly
4357 A new object defines "foo" and references "bar".
4359 A new object thus has no problem with its undefined symbols being
4360 satisfied by definitions in an old object. On the other hand, the
4361 old object won't have ".bar" satisfied by a new object.
4363 Keep a list of newly added dot-symbols. */
4365 if (string[0] == '.')
4367 struct ppc_link_hash_table *htab;
4369 htab = (struct ppc_link_hash_table *) table;
4370 eh->u.next_dot_sym = htab->dot_syms;
4371 htab->dot_syms = eh;
4378 struct tocsave_entry {
4384 tocsave_htab_hash (const void *p)
4386 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4387 return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3;
4391 tocsave_htab_eq (const void *p1, const void *p2)
4393 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4394 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4395 return e1->sec == e2->sec && e1->offset == e2->offset;
4398 /* Destroy a ppc64 ELF linker hash table. */
4401 ppc64_elf_link_hash_table_free (bfd *obfd)
4403 struct ppc_link_hash_table *htab;
4405 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4406 if (htab->tocsave_htab)
4407 htab_delete (htab->tocsave_htab);
4408 bfd_hash_table_free (&htab->branch_hash_table);
4409 bfd_hash_table_free (&htab->stub_hash_table);
4410 _bfd_elf_link_hash_table_free (obfd);
4413 /* Create a ppc64 ELF linker hash table. */
4415 static struct bfd_link_hash_table *
4416 ppc64_elf_link_hash_table_create (bfd *abfd)
4418 struct ppc_link_hash_table *htab;
4419 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4421 htab = bfd_zmalloc (amt);
4425 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4426 sizeof (struct ppc_link_hash_entry),
4433 /* Init the stub hash table too. */
4434 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4435 sizeof (struct ppc_stub_hash_entry)))
4437 _bfd_elf_link_hash_table_free (abfd);
4441 /* And the branch hash table. */
4442 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4443 sizeof (struct ppc_branch_hash_entry)))
4445 bfd_hash_table_free (&htab->stub_hash_table);
4446 _bfd_elf_link_hash_table_free (abfd);
4450 htab->tocsave_htab = htab_try_create (1024,
4454 if (htab->tocsave_htab == NULL)
4456 ppc64_elf_link_hash_table_free (abfd);
4459 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4461 /* Initializing two fields of the union is just cosmetic. We really
4462 only care about glist, but when compiled on a 32-bit host the
4463 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4464 debugger inspection of these fields look nicer. */
4465 htab->elf.init_got_refcount.refcount = 0;
4466 htab->elf.init_got_refcount.glist = NULL;
4467 htab->elf.init_plt_refcount.refcount = 0;
4468 htab->elf.init_plt_refcount.glist = NULL;
4469 htab->elf.init_got_offset.offset = 0;
4470 htab->elf.init_got_offset.glist = NULL;
4471 htab->elf.init_plt_offset.offset = 0;
4472 htab->elf.init_plt_offset.glist = NULL;
4474 return &htab->elf.root;
4477 /* Create sections for linker generated code. */
4480 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4482 struct ppc_link_hash_table *htab;
4485 htab = ppc_hash_table (info);
4487 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4488 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4489 if (htab->params->save_restore_funcs)
4491 /* Create .sfpr for code to save and restore fp regs. */
4492 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4494 if (htab->sfpr == NULL
4495 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4499 if (bfd_link_relocatable (info))
4502 /* Create .glink for lazy dynamic linking support. */
4503 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4505 if (htab->glink == NULL
4506 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4509 /* The part of .glink used by global entry stubs, separate so that
4510 it can be aligned appropriately without affecting htab->glink. */
4511 htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4513 if (htab->global_entry == NULL
4514 || ! bfd_set_section_alignment (dynobj, htab->global_entry, 2))
4517 if (!info->no_ld_generated_unwind_info)
4519 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4520 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4521 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4524 if (htab->glink_eh_frame == NULL
4525 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4529 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4530 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4531 if (htab->elf.iplt == NULL
4532 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4535 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4536 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4538 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4539 if (htab->elf.irelplt == NULL
4540 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4543 /* Create branch lookup table for plt_branch stubs. */
4544 flags = (SEC_ALLOC | SEC_LOAD
4545 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4546 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4548 if (htab->brlt == NULL
4549 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4552 /* Local plt entries, put in .branch_lt but a separate section for
4554 htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4556 if (htab->pltlocal == NULL
4557 || ! bfd_set_section_alignment (dynobj, htab->pltlocal, 3))
4560 if (!bfd_link_pic (info))
4563 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4564 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4566 = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags);
4567 if (htab->relbrlt == NULL
4568 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4572 = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags);
4573 if (htab->relpltlocal == NULL
4574 || ! bfd_set_section_alignment (dynobj, htab->relpltlocal, 3))
4580 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4583 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4584 struct ppc64_elf_params *params)
4586 struct ppc_link_hash_table *htab;
4588 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4590 /* Always hook our dynamic sections into the first bfd, which is the
4591 linker created stub bfd. This ensures that the GOT header is at
4592 the start of the output TOC section. */
4593 htab = ppc_hash_table (info);
4594 htab->elf.dynobj = params->stub_bfd;
4595 htab->params = params;
4597 return create_linkage_sections (htab->elf.dynobj, info);
4600 /* Build a name for an entry in the stub hash table. */
4603 ppc_stub_name (const asection *input_section,
4604 const asection *sym_sec,
4605 const struct ppc_link_hash_entry *h,
4606 const Elf_Internal_Rela *rel)
4611 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4612 offsets from a sym as a branch target? In fact, we could
4613 probably assume the addend is always zero. */
4614 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4618 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4619 stub_name = bfd_malloc (len);
4620 if (stub_name == NULL)
4623 len = sprintf (stub_name, "%08x.%s+%x",
4624 input_section->id & 0xffffffff,
4625 h->elf.root.root.string,
4626 (int) rel->r_addend & 0xffffffff);
4630 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4631 stub_name = bfd_malloc (len);
4632 if (stub_name == NULL)
4635 len = sprintf (stub_name, "%08x.%x:%x+%x",
4636 input_section->id & 0xffffffff,
4637 sym_sec->id & 0xffffffff,
4638 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4639 (int) rel->r_addend & 0xffffffff);
4641 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4642 stub_name[len - 2] = 0;
4646 /* Look up an entry in the stub hash. Stub entries are cached because
4647 creating the stub name takes a bit of time. */
4649 static struct ppc_stub_hash_entry *
4650 ppc_get_stub_entry (const asection *input_section,
4651 const asection *sym_sec,
4652 struct ppc_link_hash_entry *h,
4653 const Elf_Internal_Rela *rel,
4654 struct ppc_link_hash_table *htab)
4656 struct ppc_stub_hash_entry *stub_entry;
4657 struct map_stub *group;
4659 /* If this input section is part of a group of sections sharing one
4660 stub section, then use the id of the first section in the group.
4661 Stub names need to include a section id, as there may well be
4662 more than one stub used to reach say, printf, and we need to
4663 distinguish between them. */
4664 group = htab->sec_info[input_section->id].u.group;
4668 if (h != NULL && h->u.stub_cache != NULL
4669 && h->u.stub_cache->h == h
4670 && h->u.stub_cache->group == group)
4672 stub_entry = h->u.stub_cache;
4678 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4679 if (stub_name == NULL)
4682 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4683 stub_name, FALSE, FALSE);
4685 h->u.stub_cache = stub_entry;
4693 /* Add a new stub entry to the stub hash. Not all fields of the new
4694 stub entry are initialised. */
4696 static struct ppc_stub_hash_entry *
4697 ppc_add_stub (const char *stub_name,
4699 struct bfd_link_info *info)
4701 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4702 struct map_stub *group;
4705 struct ppc_stub_hash_entry *stub_entry;
4707 group = htab->sec_info[section->id].u.group;
4708 link_sec = group->link_sec;
4709 stub_sec = group->stub_sec;
4710 if (stub_sec == NULL)
4716 namelen = strlen (link_sec->name);
4717 len = namelen + sizeof (STUB_SUFFIX);
4718 s_name = bfd_alloc (htab->params->stub_bfd, len);
4722 memcpy (s_name, link_sec->name, namelen);
4723 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4724 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4725 if (stub_sec == NULL)
4727 group->stub_sec = stub_sec;
4730 /* Enter this entry into the linker stub hash table. */
4731 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4733 if (stub_entry == NULL)
4735 /* xgettext:c-format */
4736 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
4737 section->owner, stub_name);
4741 stub_entry->group = group;
4742 stub_entry->stub_offset = 0;
4746 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4747 not already done. */
4750 create_got_section (bfd *abfd, struct bfd_link_info *info)
4752 asection *got, *relgot;
4754 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4756 if (!is_ppc64_elf (abfd))
4762 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4765 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4766 | SEC_LINKER_CREATED);
4768 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4770 || !bfd_set_section_alignment (abfd, got, 3))
4773 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4774 flags | SEC_READONLY);
4776 || ! bfd_set_section_alignment (abfd, relgot, 3))
4779 ppc64_elf_tdata (abfd)->got = got;
4780 ppc64_elf_tdata (abfd)->relgot = relgot;
4784 /* Follow indirect and warning symbol links. */
4786 static inline struct bfd_link_hash_entry *
4787 follow_link (struct bfd_link_hash_entry *h)
4789 while (h->type == bfd_link_hash_indirect
4790 || h->type == bfd_link_hash_warning)
4795 static inline struct elf_link_hash_entry *
4796 elf_follow_link (struct elf_link_hash_entry *h)
4798 return (struct elf_link_hash_entry *) follow_link (&h->root);
4801 static inline struct ppc_link_hash_entry *
4802 ppc_follow_link (struct ppc_link_hash_entry *h)
4804 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4807 /* Merge PLT info on FROM with that on TO. */
4810 move_plt_plist (struct ppc_link_hash_entry *from,
4811 struct ppc_link_hash_entry *to)
4813 if (from->elf.plt.plist != NULL)
4815 if (to->elf.plt.plist != NULL)
4817 struct plt_entry **entp;
4818 struct plt_entry *ent;
4820 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4822 struct plt_entry *dent;
4824 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4825 if (dent->addend == ent->addend)
4827 dent->plt.refcount += ent->plt.refcount;
4834 *entp = to->elf.plt.plist;
4837 to->elf.plt.plist = from->elf.plt.plist;
4838 from->elf.plt.plist = NULL;
4842 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4845 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4846 struct elf_link_hash_entry *dir,
4847 struct elf_link_hash_entry *ind)
4849 struct ppc_link_hash_entry *edir, *eind;
4851 edir = (struct ppc_link_hash_entry *) dir;
4852 eind = (struct ppc_link_hash_entry *) ind;
4854 edir->is_func |= eind->is_func;
4855 edir->is_func_descriptor |= eind->is_func_descriptor;
4856 edir->tls_mask |= eind->tls_mask;
4857 if (eind->oh != NULL)
4858 edir->oh = ppc_follow_link (eind->oh);
4860 if (edir->elf.versioned != versioned_hidden)
4861 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4862 edir->elf.ref_regular |= eind->elf.ref_regular;
4863 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4864 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4865 edir->elf.needs_plt |= eind->elf.needs_plt;
4866 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4868 /* If we were called to copy over info for a weak sym, don't copy
4869 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4870 in order to simplify readonly_dynrelocs and save a field in the
4871 symbol hash entry, but that means dyn_relocs can't be used in any
4872 tests about a specific symbol, or affect other symbol flags which
4874 if (eind->elf.root.type != bfd_link_hash_indirect)
4877 /* Copy over any dynamic relocs we may have on the indirect sym. */
4878 if (eind->dyn_relocs != NULL)
4880 if (edir->dyn_relocs != NULL)
4882 struct elf_dyn_relocs **pp;
4883 struct elf_dyn_relocs *p;
4885 /* Add reloc counts against the indirect sym to the direct sym
4886 list. Merge any entries against the same section. */
4887 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4889 struct elf_dyn_relocs *q;
4891 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4892 if (q->sec == p->sec)
4894 q->pc_count += p->pc_count;
4895 q->count += p->count;
4902 *pp = edir->dyn_relocs;
4905 edir->dyn_relocs = eind->dyn_relocs;
4906 eind->dyn_relocs = NULL;
4909 /* Copy over got entries that we may have already seen to the
4910 symbol which just became indirect. */
4911 if (eind->elf.got.glist != NULL)
4913 if (edir->elf.got.glist != NULL)
4915 struct got_entry **entp;
4916 struct got_entry *ent;
4918 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4920 struct got_entry *dent;
4922 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4923 if (dent->addend == ent->addend
4924 && dent->owner == ent->owner
4925 && dent->tls_type == ent->tls_type)
4927 dent->got.refcount += ent->got.refcount;
4934 *entp = edir->elf.got.glist;
4937 edir->elf.got.glist = eind->elf.got.glist;
4938 eind->elf.got.glist = NULL;
4941 /* And plt entries. */
4942 move_plt_plist (eind, edir);
4944 if (eind->elf.dynindx != -1)
4946 if (edir->elf.dynindx != -1)
4947 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4948 edir->elf.dynstr_index);
4949 edir->elf.dynindx = eind->elf.dynindx;
4950 edir->elf.dynstr_index = eind->elf.dynstr_index;
4951 eind->elf.dynindx = -1;
4952 eind->elf.dynstr_index = 0;
4956 /* Find the function descriptor hash entry from the given function code
4957 hash entry FH. Link the entries via their OH fields. */
4959 static struct ppc_link_hash_entry *
4960 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4962 struct ppc_link_hash_entry *fdh = fh->oh;
4966 const char *fd_name = fh->elf.root.root.string + 1;
4968 fdh = (struct ppc_link_hash_entry *)
4969 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4973 fdh->is_func_descriptor = 1;
4979 fdh = ppc_follow_link (fdh);
4980 fdh->is_func_descriptor = 1;
4985 /* Make a fake function descriptor sym for the undefined code sym FH. */
4987 static struct ppc_link_hash_entry *
4988 make_fdh (struct bfd_link_info *info,
4989 struct ppc_link_hash_entry *fh)
4991 bfd *abfd = fh->elf.root.u.undef.abfd;
4992 struct bfd_link_hash_entry *bh = NULL;
4993 struct ppc_link_hash_entry *fdh;
4994 flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak
4998 if (!_bfd_generic_link_add_one_symbol (info, abfd,
4999 fh->elf.root.root.string + 1,
5000 flags, bfd_und_section_ptr, 0,
5001 NULL, FALSE, FALSE, &bh))
5004 fdh = (struct ppc_link_hash_entry *) bh;
5005 fdh->elf.non_elf = 0;
5007 fdh->is_func_descriptor = 1;
5014 /* Fix function descriptor symbols defined in .opd sections to be
5018 ppc64_elf_add_symbol_hook (bfd *ibfd,
5019 struct bfd_link_info *info,
5020 Elf_Internal_Sym *isym,
5022 flagword *flags ATTRIBUTE_UNUSED,
5026 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
5027 && (ibfd->flags & DYNAMIC) == 0
5028 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
5029 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
5032 && strcmp ((*sec)->name, ".opd") == 0)
5036 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
5037 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
5038 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
5040 /* If the symbol is a function defined in .opd, and the function
5041 code is in a discarded group, let it appear to be undefined. */
5042 if (!bfd_link_relocatable (info)
5043 && (*sec)->reloc_count != 0
5044 && opd_entry_value (*sec, *value, &code_sec, NULL,
5045 FALSE) != (bfd_vma) -1
5046 && discarded_section (code_sec))
5048 *sec = bfd_und_section_ptr;
5049 isym->st_shndx = SHN_UNDEF;
5052 else if (*sec != NULL
5053 && strcmp ((*sec)->name, ".toc") == 0
5054 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
5056 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5058 htab->params->object_in_toc = 1;
5061 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
5063 if (abiversion (ibfd) == 0)
5064 set_abiversion (ibfd, 2);
5065 else if (abiversion (ibfd) == 1)
5067 _bfd_error_handler (_("symbol '%s' has invalid st_other"
5068 " for ABI version 1"), *name);
5069 bfd_set_error (bfd_error_bad_value);
5077 /* Merge non-visibility st_other attributes: local entry point. */
5080 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
5081 const Elf_Internal_Sym *isym,
5082 bfd_boolean definition,
5083 bfd_boolean dynamic)
5085 if (definition && (!dynamic || !h->def_regular))
5086 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
5087 | ELF_ST_VISIBILITY (h->other));
5090 /* Hook called on merging a symbol. We use this to clear "fake" since
5091 we now have a real symbol. */
5094 ppc64_elf_merge_symbol (struct elf_link_hash_entry *h,
5095 const Elf_Internal_Sym *isym,
5096 asection **psec ATTRIBUTE_UNUSED,
5097 bfd_boolean newdef ATTRIBUTE_UNUSED,
5098 bfd_boolean olddef ATTRIBUTE_UNUSED,
5099 bfd *oldbfd ATTRIBUTE_UNUSED,
5100 const asection *oldsec ATTRIBUTE_UNUSED)
5102 ((struct ppc_link_hash_entry *) h)->fake = 0;
5103 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
5104 ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1;
5108 /* This function makes an old ABI object reference to ".bar" cause the
5109 inclusion of a new ABI object archive that defines "bar".
5110 NAME is a symbol defined in an archive. Return a symbol in the hash
5111 table that might be satisfied by the archive symbols. */
5113 static struct elf_link_hash_entry *
5114 ppc64_elf_archive_symbol_lookup (bfd *abfd,
5115 struct bfd_link_info *info,
5118 struct elf_link_hash_entry *h;
5122 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
5124 /* Don't return this sym if it is a fake function descriptor
5125 created by add_symbol_adjust. */
5126 && !((struct ppc_link_hash_entry *) h)->fake)
5132 len = strlen (name);
5133 dot_name = bfd_alloc (abfd, len + 2);
5134 if (dot_name == NULL)
5135 return (struct elf_link_hash_entry *) -1;
5137 memcpy (dot_name + 1, name, len + 1);
5138 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5139 bfd_release (abfd, dot_name);
5143 /* This function satisfies all old ABI object references to ".bar" if a
5144 new ABI object defines "bar". Well, at least, undefined dot symbols
5145 are made weak. This stops later archive searches from including an
5146 object if we already have a function descriptor definition. It also
5147 prevents the linker complaining about undefined symbols.
5148 We also check and correct mismatched symbol visibility here. The
5149 most restrictive visibility of the function descriptor and the
5150 function entry symbol is used. */
5153 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5155 struct ppc_link_hash_table *htab;
5156 struct ppc_link_hash_entry *fdh;
5158 if (eh->elf.root.type == bfd_link_hash_warning)
5159 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5161 if (eh->elf.root.type == bfd_link_hash_indirect)
5164 if (eh->elf.root.root.string[0] != '.')
5167 htab = ppc_hash_table (info);
5171 fdh = lookup_fdh (eh, htab);
5173 && !bfd_link_relocatable (info)
5174 && (eh->elf.root.type == bfd_link_hash_undefined
5175 || eh->elf.root.type == bfd_link_hash_undefweak)
5176 && eh->elf.ref_regular)
5178 /* Make an undefined function descriptor sym, in order to
5179 pull in an --as-needed shared lib. Archives are handled
5181 fdh = make_fdh (info, eh);
5188 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5189 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5191 /* Make both descriptor and entry symbol have the most
5192 constraining visibility of either symbol. */
5193 if (entry_vis < descr_vis)
5194 fdh->elf.other += entry_vis - descr_vis;
5195 else if (entry_vis > descr_vis)
5196 eh->elf.other += descr_vis - entry_vis;
5198 /* Propagate reference flags from entry symbol to function
5199 descriptor symbol. */
5200 fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular;
5201 fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic;
5202 fdh->elf.ref_regular |= eh->elf.ref_regular;
5203 fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak;
5205 if (!fdh->elf.forced_local
5206 && fdh->elf.dynindx == -1
5207 && fdh->elf.versioned != versioned_hidden
5208 && (bfd_link_dll (info)
5209 || fdh->elf.def_dynamic
5210 || fdh->elf.ref_dynamic)
5211 && (eh->elf.ref_regular
5212 || eh->elf.def_regular))
5214 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5222 /* Set up opd section info and abiversion for IBFD, and process list
5223 of dot-symbols we made in link_hash_newfunc. */
5226 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5228 struct ppc_link_hash_table *htab;
5229 struct ppc_link_hash_entry **p, *eh;
5230 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5232 if (opd != NULL && opd->size != 0)
5234 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5235 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5237 if (abiversion (ibfd) == 0)
5238 set_abiversion (ibfd, 1);
5239 else if (abiversion (ibfd) >= 2)
5241 /* xgettext:c-format */
5242 _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"),
5243 ibfd, abiversion (ibfd));
5244 bfd_set_error (bfd_error_bad_value);
5249 if (is_ppc64_elf (info->output_bfd))
5251 /* For input files without an explicit abiversion in e_flags
5252 we should have flagged any with symbol st_other bits set
5253 as ELFv1 and above flagged those with .opd as ELFv2.
5254 Set the output abiversion if not yet set, and for any input
5255 still ambiguous, take its abiversion from the output.
5256 Differences in ABI are reported later. */
5257 if (abiversion (info->output_bfd) == 0)
5258 set_abiversion (info->output_bfd, abiversion (ibfd));
5259 else if (abiversion (ibfd) == 0)
5260 set_abiversion (ibfd, abiversion (info->output_bfd));
5263 htab = ppc_hash_table (info);
5267 if (opd != NULL && opd->size != 0
5268 && (ibfd->flags & DYNAMIC) == 0
5269 && (opd->flags & SEC_RELOC) != 0
5270 && opd->reloc_count != 0
5271 && !bfd_is_abs_section (opd->output_section)
5272 && info->gc_sections)
5274 /* Garbage collection needs some extra help with .opd sections.
5275 We don't want to necessarily keep everything referenced by
5276 relocs in .opd, as that would keep all functions. Instead,
5277 if we reference an .opd symbol (a function descriptor), we
5278 want to keep the function code symbol's section. This is
5279 easy for global symbols, but for local syms we need to keep
5280 information about the associated function section. */
5282 asection **opd_sym_map;
5283 Elf_Internal_Shdr *symtab_hdr;
5284 Elf_Internal_Rela *relocs, *rel_end, *rel;
5286 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5287 opd_sym_map = bfd_zalloc (ibfd, amt);
5288 if (opd_sym_map == NULL)
5290 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5291 relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL,
5295 symtab_hdr = &elf_symtab_hdr (ibfd);
5296 rel_end = relocs + opd->reloc_count - 1;
5297 for (rel = relocs; rel < rel_end; rel++)
5299 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
5300 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
5302 if (r_type == R_PPC64_ADDR64
5303 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC
5304 && r_symndx < symtab_hdr->sh_info)
5306 Elf_Internal_Sym *isym;
5309 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx);
5312 if (elf_section_data (opd)->relocs != relocs)
5317 s = bfd_section_from_elf_index (ibfd, isym->st_shndx);
5318 if (s != NULL && s != opd)
5319 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5322 if (elf_section_data (opd)->relocs != relocs)
5326 p = &htab->dot_syms;
5327 while ((eh = *p) != NULL)
5330 if (&eh->elf == htab->elf.hgot)
5332 else if (htab->elf.hgot == NULL
5333 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5334 htab->elf.hgot = &eh->elf;
5335 else if (abiversion (ibfd) <= 1)
5337 htab->need_func_desc_adj = 1;
5338 if (!add_symbol_adjust (eh, info))
5341 p = &eh->u.next_dot_sym;
5346 /* Undo hash table changes when an --as-needed input file is determined
5347 not to be needed. */
5350 ppc64_elf_notice_as_needed (bfd *ibfd,
5351 struct bfd_link_info *info,
5352 enum notice_asneeded_action act)
5354 if (act == notice_not_needed)
5356 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5361 htab->dot_syms = NULL;
5363 return _bfd_elf_notice_as_needed (ibfd, info, act);
5366 /* If --just-symbols against a final linked binary, then assume we need
5367 toc adjusting stubs when calling functions defined there. */
5370 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5372 if ((sec->flags & SEC_CODE) != 0
5373 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5374 && is_ppc64_elf (sec->owner))
5376 if (abiversion (sec->owner) >= 2
5377 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5378 sec->has_toc_reloc = 1;
5380 _bfd_elf_link_just_syms (sec, info);
5383 static struct plt_entry **
5384 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5385 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5387 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5388 struct plt_entry **local_plt;
5389 unsigned char *local_got_tls_masks;
5391 if (local_got_ents == NULL)
5393 bfd_size_type size = symtab_hdr->sh_info;
5395 size *= (sizeof (*local_got_ents)
5396 + sizeof (*local_plt)
5397 + sizeof (*local_got_tls_masks));
5398 local_got_ents = bfd_zalloc (abfd, size);
5399 if (local_got_ents == NULL)
5401 elf_local_got_ents (abfd) = local_got_ents;
5404 if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0)
5406 struct got_entry *ent;
5408 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5409 if (ent->addend == r_addend
5410 && ent->owner == abfd
5411 && ent->tls_type == tls_type)
5415 bfd_size_type amt = sizeof (*ent);
5416 ent = bfd_alloc (abfd, amt);
5419 ent->next = local_got_ents[r_symndx];
5420 ent->addend = r_addend;
5422 ent->tls_type = tls_type;
5423 ent->is_indirect = FALSE;
5424 ent->got.refcount = 0;
5425 local_got_ents[r_symndx] = ent;
5427 ent->got.refcount += 1;
5430 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5431 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5432 local_got_tls_masks[r_symndx] |= tls_type & 0xff;
5434 return local_plt + r_symndx;
5438 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5440 struct plt_entry *ent;
5442 for (ent = *plist; ent != NULL; ent = ent->next)
5443 if (ent->addend == addend)
5447 bfd_size_type amt = sizeof (*ent);
5448 ent = bfd_alloc (abfd, amt);
5452 ent->addend = addend;
5453 ent->plt.refcount = 0;
5456 ent->plt.refcount += 1;
5461 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5463 return (r_type == R_PPC64_REL24
5464 || r_type == R_PPC64_REL14
5465 || r_type == R_PPC64_REL14_BRTAKEN
5466 || r_type == R_PPC64_REL14_BRNTAKEN
5467 || r_type == R_PPC64_ADDR24
5468 || r_type == R_PPC64_ADDR14
5469 || r_type == R_PPC64_ADDR14_BRTAKEN
5470 || r_type == R_PPC64_ADDR14_BRNTAKEN
5471 || r_type == R_PPC64_PLTCALL);
5474 /* Relocs on inline plt call sequence insns prior to the call. */
5477 is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type)
5479 return (r_type == R_PPC64_PLT16_HA
5480 || r_type == R_PPC64_PLT16_HI
5481 || r_type == R_PPC64_PLT16_LO
5482 || r_type == R_PPC64_PLT16_LO_DS
5483 || r_type == R_PPC64_PLTSEQ);
5486 /* Look through the relocs for a section during the first phase, and
5487 calculate needed space in the global offset table, procedure
5488 linkage table, and dynamic reloc sections. */
5491 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5492 asection *sec, const Elf_Internal_Rela *relocs)
5494 struct ppc_link_hash_table *htab;
5495 Elf_Internal_Shdr *symtab_hdr;
5496 struct elf_link_hash_entry **sym_hashes;
5497 const Elf_Internal_Rela *rel;
5498 const Elf_Internal_Rela *rel_end;
5500 struct elf_link_hash_entry *tga, *dottga;
5503 if (bfd_link_relocatable (info))
5506 /* Don't do anything special with non-loaded, non-alloced sections.
5507 In particular, any relocs in such sections should not affect GOT
5508 and PLT reference counting (ie. we don't allow them to create GOT
5509 or PLT entries), there's no possibility or desire to optimize TLS
5510 relocs, and there's not much point in propagating relocs to shared
5511 libs that the dynamic linker won't relocate. */
5512 if ((sec->flags & SEC_ALLOC) == 0)
5515 BFD_ASSERT (is_ppc64_elf (abfd));
5517 htab = ppc_hash_table (info);
5521 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5522 FALSE, FALSE, TRUE);
5523 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5524 FALSE, FALSE, TRUE);
5525 symtab_hdr = &elf_symtab_hdr (abfd);
5526 sym_hashes = elf_sym_hashes (abfd);
5528 is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd;
5529 rel_end = relocs + sec->reloc_count;
5530 for (rel = relocs; rel < rel_end; rel++)
5532 unsigned long r_symndx;
5533 struct elf_link_hash_entry *h;
5534 enum elf_ppc64_reloc_type r_type;
5536 struct _ppc64_elf_section_data *ppc64_sec;
5537 struct plt_entry **ifunc, **plt_list;
5539 r_symndx = ELF64_R_SYM (rel->r_info);
5540 if (r_symndx < symtab_hdr->sh_info)
5544 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5545 h = elf_follow_link (h);
5547 if (h == htab->elf.hgot)
5548 sec->has_toc_reloc = 1;
5555 if (h->type == STT_GNU_IFUNC)
5558 ifunc = &h->plt.plist;
5563 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5568 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5570 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5572 NON_GOT | PLT_IFUNC);
5578 r_type = ELF64_R_TYPE (rel->r_info);
5583 /* These special tls relocs tie a call to __tls_get_addr with
5584 its parameter symbol. */
5586 ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK;
5588 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5590 NON_GOT | TLS_TLS | TLS_MARK))
5592 sec->has_tls_reloc = 1;
5595 case R_PPC64_GOT_TLSLD16:
5596 case R_PPC64_GOT_TLSLD16_LO:
5597 case R_PPC64_GOT_TLSLD16_HI:
5598 case R_PPC64_GOT_TLSLD16_HA:
5599 tls_type = TLS_TLS | TLS_LD;
5602 case R_PPC64_GOT_TLSGD16:
5603 case R_PPC64_GOT_TLSGD16_LO:
5604 case R_PPC64_GOT_TLSGD16_HI:
5605 case R_PPC64_GOT_TLSGD16_HA:
5606 tls_type = TLS_TLS | TLS_GD;
5609 case R_PPC64_GOT_TPREL16_DS:
5610 case R_PPC64_GOT_TPREL16_LO_DS:
5611 case R_PPC64_GOT_TPREL16_HI:
5612 case R_PPC64_GOT_TPREL16_HA:
5613 if (bfd_link_dll (info))
5614 info->flags |= DF_STATIC_TLS;
5615 tls_type = TLS_TLS | TLS_TPREL;
5618 case R_PPC64_GOT_DTPREL16_DS:
5619 case R_PPC64_GOT_DTPREL16_LO_DS:
5620 case R_PPC64_GOT_DTPREL16_HI:
5621 case R_PPC64_GOT_DTPREL16_HA:
5622 tls_type = TLS_TLS | TLS_DTPREL;
5624 sec->has_tls_reloc = 1;
5628 case R_PPC64_GOT16_DS:
5629 case R_PPC64_GOT16_HA:
5630 case R_PPC64_GOT16_HI:
5631 case R_PPC64_GOT16_LO:
5632 case R_PPC64_GOT16_LO_DS:
5633 /* This symbol requires a global offset table entry. */
5634 sec->has_toc_reloc = 1;
5635 if (r_type == R_PPC64_GOT_TLSLD16
5636 || r_type == R_PPC64_GOT_TLSGD16
5637 || r_type == R_PPC64_GOT_TPREL16_DS
5638 || r_type == R_PPC64_GOT_DTPREL16_DS
5639 || r_type == R_PPC64_GOT16
5640 || r_type == R_PPC64_GOT16_DS)
5642 htab->do_multi_toc = 1;
5643 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5646 if (ppc64_elf_tdata (abfd)->got == NULL
5647 && !create_got_section (abfd, info))
5652 struct ppc_link_hash_entry *eh;
5653 struct got_entry *ent;
5655 eh = (struct ppc_link_hash_entry *) h;
5656 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5657 if (ent->addend == rel->r_addend
5658 && ent->owner == abfd
5659 && ent->tls_type == tls_type)
5663 bfd_size_type amt = sizeof (*ent);
5664 ent = bfd_alloc (abfd, amt);
5667 ent->next = eh->elf.got.glist;
5668 ent->addend = rel->r_addend;
5670 ent->tls_type = tls_type;
5671 ent->is_indirect = FALSE;
5672 ent->got.refcount = 0;
5673 eh->elf.got.glist = ent;
5675 ent->got.refcount += 1;
5676 eh->tls_mask |= tls_type;
5679 /* This is a global offset table entry for a local symbol. */
5680 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5681 rel->r_addend, tls_type))
5684 /* We may also need a plt entry if the symbol turns out to be
5686 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5688 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5693 case R_PPC64_PLT16_HA:
5694 case R_PPC64_PLT16_HI:
5695 case R_PPC64_PLT16_LO:
5696 case R_PPC64_PLT16_LO_DS:
5699 /* This symbol requires a procedure linkage table entry. */
5704 if (h->root.root.string[0] == '.'
5705 && h->root.root.string[1] != '\0')
5706 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5707 ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP;
5708 plt_list = &h->plt.plist;
5710 if (plt_list == NULL)
5711 plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5713 NON_GOT | PLT_KEEP);
5714 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5718 /* The following relocations don't need to propagate the
5719 relocation if linking a shared object since they are
5720 section relative. */
5721 case R_PPC64_SECTOFF:
5722 case R_PPC64_SECTOFF_LO:
5723 case R_PPC64_SECTOFF_HI:
5724 case R_PPC64_SECTOFF_HA:
5725 case R_PPC64_SECTOFF_DS:
5726 case R_PPC64_SECTOFF_LO_DS:
5727 case R_PPC64_DTPREL16:
5728 case R_PPC64_DTPREL16_LO:
5729 case R_PPC64_DTPREL16_HI:
5730 case R_PPC64_DTPREL16_HA:
5731 case R_PPC64_DTPREL16_DS:
5732 case R_PPC64_DTPREL16_LO_DS:
5733 case R_PPC64_DTPREL16_HIGH:
5734 case R_PPC64_DTPREL16_HIGHA:
5735 case R_PPC64_DTPREL16_HIGHER:
5736 case R_PPC64_DTPREL16_HIGHERA:
5737 case R_PPC64_DTPREL16_HIGHEST:
5738 case R_PPC64_DTPREL16_HIGHESTA:
5743 case R_PPC64_REL16_LO:
5744 case R_PPC64_REL16_HI:
5745 case R_PPC64_REL16_HA:
5746 case R_PPC64_REL16DX_HA:
5749 /* Not supported as a dynamic relocation. */
5750 case R_PPC64_ADDR64_LOCAL:
5751 if (bfd_link_pic (info))
5753 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5755 /* xgettext:c-format */
5756 info->callbacks->einfo (_("%H: %s reloc unsupported "
5757 "in shared libraries and PIEs\n"),
5758 abfd, sec, rel->r_offset,
5759 ppc64_elf_howto_table[r_type]->name);
5760 bfd_set_error (bfd_error_bad_value);
5766 case R_PPC64_TOC16_DS:
5767 htab->do_multi_toc = 1;
5768 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5770 case R_PPC64_TOC16_LO:
5771 case R_PPC64_TOC16_HI:
5772 case R_PPC64_TOC16_HA:
5773 case R_PPC64_TOC16_LO_DS:
5774 sec->has_toc_reloc = 1;
5781 /* This relocation describes the C++ object vtable hierarchy.
5782 Reconstruct it for later use during GC. */
5783 case R_PPC64_GNU_VTINHERIT:
5784 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5788 /* This relocation describes which C++ vtable entries are actually
5789 used. Record for later use during GC. */
5790 case R_PPC64_GNU_VTENTRY:
5791 BFD_ASSERT (h != NULL);
5793 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5798 case R_PPC64_REL14_BRTAKEN:
5799 case R_PPC64_REL14_BRNTAKEN:
5801 asection *dest = NULL;
5803 /* Heuristic: If jumping outside our section, chances are
5804 we are going to need a stub. */
5807 /* If the sym is weak it may be overridden later, so
5808 don't assume we know where a weak sym lives. */
5809 if (h->root.type == bfd_link_hash_defined)
5810 dest = h->root.u.def.section;
5814 Elf_Internal_Sym *isym;
5816 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5821 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5825 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5829 case R_PPC64_PLTCALL:
5830 ppc64_elf_section_data (sec)->has_pltcall = 1;
5839 if (h->root.root.string[0] == '.'
5840 && h->root.root.string[1] != '\0')
5841 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5843 if (h == tga || h == dottga)
5845 sec->has_tls_reloc = 1;
5847 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5848 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5849 /* We have a new-style __tls_get_addr call with
5853 /* Mark this section as having an old-style call. */
5854 sec->has_tls_get_addr_call = 1;
5856 plt_list = &h->plt.plist;
5859 /* We may need a .plt entry if the function this reloc
5860 refers to is in a shared lib. */
5862 && !update_plt_info (abfd, plt_list, rel->r_addend))
5866 case R_PPC64_ADDR14:
5867 case R_PPC64_ADDR14_BRNTAKEN:
5868 case R_PPC64_ADDR14_BRTAKEN:
5869 case R_PPC64_ADDR24:
5872 case R_PPC64_TPREL64:
5873 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5874 if (bfd_link_dll (info))
5875 info->flags |= DF_STATIC_TLS;
5878 case R_PPC64_DTPMOD64:
5879 if (rel + 1 < rel_end
5880 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5881 && rel[1].r_offset == rel->r_offset + 8)
5882 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5884 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5887 case R_PPC64_DTPREL64:
5888 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5890 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5891 && rel[-1].r_offset == rel->r_offset - 8)
5892 /* This is the second reloc of a dtpmod, dtprel pair.
5893 Don't mark with TLS_DTPREL. */
5897 sec->has_tls_reloc = 1;
5900 struct ppc_link_hash_entry *eh;
5901 eh = (struct ppc_link_hash_entry *) h;
5902 eh->tls_mask |= tls_type;
5905 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5906 rel->r_addend, tls_type))
5909 ppc64_sec = ppc64_elf_section_data (sec);
5910 if (ppc64_sec->sec_type != sec_toc)
5914 /* One extra to simplify get_tls_mask. */
5915 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5916 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5917 if (ppc64_sec->u.toc.symndx == NULL)
5919 amt = sec->size * sizeof (bfd_vma) / 8;
5920 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5921 if (ppc64_sec->u.toc.add == NULL)
5923 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5924 ppc64_sec->sec_type = sec_toc;
5926 BFD_ASSERT (rel->r_offset % 8 == 0);
5927 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5928 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5930 /* Mark the second slot of a GD or LD entry.
5931 -1 to indicate GD and -2 to indicate LD. */
5932 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5933 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5934 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5935 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5938 case R_PPC64_TPREL16:
5939 case R_PPC64_TPREL16_LO:
5940 case R_PPC64_TPREL16_HI:
5941 case R_PPC64_TPREL16_HA:
5942 case R_PPC64_TPREL16_DS:
5943 case R_PPC64_TPREL16_LO_DS:
5944 case R_PPC64_TPREL16_HIGH:
5945 case R_PPC64_TPREL16_HIGHA:
5946 case R_PPC64_TPREL16_HIGHER:
5947 case R_PPC64_TPREL16_HIGHERA:
5948 case R_PPC64_TPREL16_HIGHEST:
5949 case R_PPC64_TPREL16_HIGHESTA:
5950 if (bfd_link_dll (info))
5951 info->flags |= DF_STATIC_TLS;
5954 case R_PPC64_ADDR64:
5956 && rel + 1 < rel_end
5957 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5960 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5964 case R_PPC64_ADDR16:
5965 case R_PPC64_ADDR16_DS:
5966 case R_PPC64_ADDR16_HA:
5967 case R_PPC64_ADDR16_HI:
5968 case R_PPC64_ADDR16_HIGH:
5969 case R_PPC64_ADDR16_HIGHA:
5970 case R_PPC64_ADDR16_HIGHER:
5971 case R_PPC64_ADDR16_HIGHERA:
5972 case R_PPC64_ADDR16_HIGHEST:
5973 case R_PPC64_ADDR16_HIGHESTA:
5974 case R_PPC64_ADDR16_LO:
5975 case R_PPC64_ADDR16_LO_DS:
5976 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5977 && rel->r_addend == 0)
5979 /* We may need a .plt entry if this reloc refers to a
5980 function in a shared lib. */
5981 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5983 h->pointer_equality_needed = 1;
5990 case R_PPC64_ADDR32:
5991 case R_PPC64_UADDR16:
5992 case R_PPC64_UADDR32:
5993 case R_PPC64_UADDR64:
5995 if (h != NULL && !bfd_link_pic (info))
5996 /* We may need a copy reloc. */
5999 /* Don't propagate .opd relocs. */
6000 if (NO_OPD_RELOCS && is_opd)
6003 /* If we are creating a shared library, and this is a reloc
6004 against a global symbol, or a non PC relative reloc
6005 against a local symbol, then we need to copy the reloc
6006 into the shared library. However, if we are linking with
6007 -Bsymbolic, we do not need to copy a reloc against a
6008 global symbol which is defined in an object we are
6009 including in the link (i.e., DEF_REGULAR is set). At
6010 this point we have not seen all the input files, so it is
6011 possible that DEF_REGULAR is not set now but will be set
6012 later (it is never cleared). In case of a weak definition,
6013 DEF_REGULAR may be cleared later by a strong definition in
6014 a shared library. We account for that possibility below by
6015 storing information in the dyn_relocs field of the hash
6016 table entry. A similar situation occurs when creating
6017 shared libraries and symbol visibility changes render the
6020 If on the other hand, we are creating an executable, we
6021 may need to keep relocations for symbols satisfied by a
6022 dynamic library if we manage to avoid copy relocs for the
6025 if ((bfd_link_pic (info)
6026 && (must_be_dyn_reloc (info, r_type)
6028 && (!SYMBOLIC_BIND (info, h)
6029 || h->root.type == bfd_link_hash_defweak
6030 || !h->def_regular))))
6031 || (ELIMINATE_COPY_RELOCS
6032 && !bfd_link_pic (info)
6034 && (h->root.type == bfd_link_hash_defweak
6035 || !h->def_regular))
6036 || (!bfd_link_pic (info)
6039 /* We must copy these reloc types into the output file.
6040 Create a reloc section in dynobj and make room for
6044 sreloc = _bfd_elf_make_dynamic_reloc_section
6045 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
6051 /* If this is a global symbol, we count the number of
6052 relocations we need for this symbol. */
6055 struct elf_dyn_relocs *p;
6056 struct elf_dyn_relocs **head;
6058 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6060 if (p == NULL || p->sec != sec)
6062 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
6072 if (!must_be_dyn_reloc (info, r_type))
6077 /* Track dynamic relocs needed for local syms too.
6078 We really need local syms available to do this
6080 struct ppc_dyn_relocs *p;
6081 struct ppc_dyn_relocs **head;
6082 bfd_boolean is_ifunc;
6085 Elf_Internal_Sym *isym;
6087 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
6092 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
6096 vpp = &elf_section_data (s)->local_dynrel;
6097 head = (struct ppc_dyn_relocs **) vpp;
6098 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
6100 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
6102 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
6104 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
6110 p->ifunc = is_ifunc;
6126 /* Merge backend specific data from an object file to the output
6127 object file when linking. */
6130 ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6132 bfd *obfd = info->output_bfd;
6133 unsigned long iflags, oflags;
6135 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
6138 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6141 if (!_bfd_generic_verify_endian_match (ibfd, info))
6144 iflags = elf_elfheader (ibfd)->e_flags;
6145 oflags = elf_elfheader (obfd)->e_flags;
6147 if (iflags & ~EF_PPC64_ABI)
6150 /* xgettext:c-format */
6151 (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags);
6152 bfd_set_error (bfd_error_bad_value);
6155 else if (iflags != oflags && iflags != 0)
6158 /* xgettext:c-format */
6159 (_("%pB: ABI version %ld is not compatible with ABI version %ld output"),
6160 ibfd, iflags, oflags);
6161 bfd_set_error (bfd_error_bad_value);
6165 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
6167 /* Merge Tag_compatibility attributes and any common GNU ones. */
6168 _bfd_elf_merge_object_attributes (ibfd, info);
6174 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6176 /* Print normal ELF private data. */
6177 _bfd_elf_print_private_bfd_data (abfd, ptr);
6179 if (elf_elfheader (abfd)->e_flags != 0)
6183 fprintf (file, _("private flags = 0x%lx:"),
6184 elf_elfheader (abfd)->e_flags);
6186 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6187 fprintf (file, _(" [abiv%ld]"),
6188 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6195 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6196 of the code entry point, and its section, which must be in the same
6197 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6200 opd_entry_value (asection *opd_sec,
6202 asection **code_sec,
6204 bfd_boolean in_code_sec)
6206 bfd *opd_bfd = opd_sec->owner;
6207 Elf_Internal_Rela *relocs;
6208 Elf_Internal_Rela *lo, *hi, *look;
6211 /* No relocs implies we are linking a --just-symbols object, or looking
6212 at a final linked executable with addr2line or somesuch. */
6213 if (opd_sec->reloc_count == 0)
6215 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6217 if (contents == NULL)
6219 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6220 return (bfd_vma) -1;
6221 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6224 /* PR 17512: file: 64b9dfbb. */
6225 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6226 return (bfd_vma) -1;
6228 val = bfd_get_64 (opd_bfd, contents + offset);
6229 if (code_sec != NULL)
6231 asection *sec, *likely = NULL;
6237 && val < sec->vma + sec->size)
6243 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6245 && (sec->flags & SEC_LOAD) != 0
6246 && (sec->flags & SEC_ALLOC) != 0)
6251 if (code_off != NULL)
6252 *code_off = val - likely->vma;
6258 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6260 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6262 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6263 /* PR 17512: file: df8e1fd6. */
6265 return (bfd_vma) -1;
6267 /* Go find the opd reloc at the sym address. */
6269 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6273 look = lo + (hi - lo) / 2;
6274 if (look->r_offset < offset)
6276 else if (look->r_offset > offset)
6280 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6282 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6283 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6285 unsigned long symndx = ELF64_R_SYM (look->r_info);
6286 asection *sec = NULL;
6288 if (symndx >= symtab_hdr->sh_info
6289 && elf_sym_hashes (opd_bfd) != NULL)
6291 struct elf_link_hash_entry **sym_hashes;
6292 struct elf_link_hash_entry *rh;
6294 sym_hashes = elf_sym_hashes (opd_bfd);
6295 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6298 rh = elf_follow_link (rh);
6299 if (rh->root.type != bfd_link_hash_defined
6300 && rh->root.type != bfd_link_hash_defweak)
6302 if (rh->root.u.def.section->owner == opd_bfd)
6304 val = rh->root.u.def.value;
6305 sec = rh->root.u.def.section;
6312 Elf_Internal_Sym *sym;
6314 if (symndx < symtab_hdr->sh_info)
6316 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6319 size_t symcnt = symtab_hdr->sh_info;
6320 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6325 symtab_hdr->contents = (bfd_byte *) sym;
6331 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6337 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6340 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6341 val = sym->st_value;
6344 val += look->r_addend;
6345 if (code_off != NULL)
6347 if (code_sec != NULL)
6349 if (in_code_sec && *code_sec != sec)
6354 if (sec->output_section != NULL)
6355 val += sec->output_section->vma + sec->output_offset;
6364 /* If the ELF symbol SYM might be a function in SEC, return the
6365 function size and set *CODE_OFF to the function's entry point,
6366 otherwise return zero. */
6368 static bfd_size_type
6369 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6374 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6375 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6379 if (!(sym->flags & BSF_SYNTHETIC))
6380 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6382 if (strcmp (sym->section->name, ".opd") == 0)
6384 struct _opd_sec_data *opd = get_opd_info (sym->section);
6385 bfd_vma symval = sym->value;
6388 && opd->adjust != NULL
6389 && elf_section_data (sym->section)->relocs != NULL)
6391 /* opd_entry_value will use cached relocs that have been
6392 adjusted, but with raw symbols. That means both local
6393 and global symbols need adjusting. */
6394 long adjust = opd->adjust[OPD_NDX (symval)];
6400 if (opd_entry_value (sym->section, symval,
6401 &sec, code_off, TRUE) == (bfd_vma) -1)
6403 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6404 symbol. This size has nothing to do with the code size of the
6405 function, which is what we're supposed to return, but the
6406 code size isn't available without looking up the dot-sym.
6407 However, doing that would be a waste of time particularly
6408 since elf_find_function will look at the dot-sym anyway.
6409 Now, elf_find_function will keep the largest size of any
6410 function sym found at the code address of interest, so return
6411 1 here to avoid it incorrectly caching a larger function size
6412 for a small function. This does mean we return the wrong
6413 size for a new-ABI function of size 24, but all that does is
6414 disable caching for such functions. */
6420 if (sym->section != sec)
6422 *code_off = sym->value;
6429 /* Return true if symbol is a strong function defined in an ELFv2
6430 object with st_other localentry bits of zero, ie. its local entry
6431 point coincides with its global entry point. */
6434 is_elfv2_localentry0 (struct elf_link_hash_entry *h)
6437 && h->type == STT_FUNC
6438 && h->root.type == bfd_link_hash_defined
6439 && (STO_PPC64_LOCAL_MASK & h->other) == 0
6440 && !((struct ppc_link_hash_entry *) h)->non_zero_localentry
6441 && is_ppc64_elf (h->root.u.def.section->owner)
6442 && abiversion (h->root.u.def.section->owner) >= 2);
6445 /* Return true if symbol is defined in a regular object file. */
6448 is_static_defined (struct elf_link_hash_entry *h)
6450 return ((h->root.type == bfd_link_hash_defined
6451 || h->root.type == bfd_link_hash_defweak)
6452 && h->root.u.def.section != NULL
6453 && h->root.u.def.section->output_section != NULL);
6456 /* If FDH is a function descriptor symbol, return the associated code
6457 entry symbol if it is defined. Return NULL otherwise. */
6459 static struct ppc_link_hash_entry *
6460 defined_code_entry (struct ppc_link_hash_entry *fdh)
6462 if (fdh->is_func_descriptor)
6464 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6465 if (fh->elf.root.type == bfd_link_hash_defined
6466 || fh->elf.root.type == bfd_link_hash_defweak)
6472 /* If FH is a function code entry symbol, return the associated
6473 function descriptor symbol if it is defined. Return NULL otherwise. */
6475 static struct ppc_link_hash_entry *
6476 defined_func_desc (struct ppc_link_hash_entry *fh)
6479 && fh->oh->is_func_descriptor)
6481 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6482 if (fdh->elf.root.type == bfd_link_hash_defined
6483 || fdh->elf.root.type == bfd_link_hash_defweak)
6489 static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *);
6491 /* Garbage collect sections, after first dealing with dot-symbols. */
6494 ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
6496 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6498 if (htab != NULL && htab->need_func_desc_adj)
6500 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6501 htab->need_func_desc_adj = 0;
6503 return bfd_elf_gc_sections (abfd, info);
6506 /* Mark all our entry sym sections, both opd and code section. */
6509 ppc64_elf_gc_keep (struct bfd_link_info *info)
6511 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6512 struct bfd_sym_chain *sym;
6517 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6519 struct ppc_link_hash_entry *eh, *fh;
6522 eh = (struct ppc_link_hash_entry *)
6523 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6526 if (eh->elf.root.type != bfd_link_hash_defined
6527 && eh->elf.root.type != bfd_link_hash_defweak)
6530 fh = defined_code_entry (eh);
6533 sec = fh->elf.root.u.def.section;
6534 sec->flags |= SEC_KEEP;
6536 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6537 && opd_entry_value (eh->elf.root.u.def.section,
6538 eh->elf.root.u.def.value,
6539 &sec, NULL, FALSE) != (bfd_vma) -1)
6540 sec->flags |= SEC_KEEP;
6542 sec = eh->elf.root.u.def.section;
6543 sec->flags |= SEC_KEEP;
6547 /* Mark sections containing dynamically referenced symbols. When
6548 building shared libraries, we must assume that any visible symbol is
6552 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6554 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6555 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6556 struct ppc_link_hash_entry *fdh;
6557 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6559 /* Dynamic linking info is on the func descriptor sym. */
6560 fdh = defined_func_desc (eh);
6564 if ((eh->elf.root.type == bfd_link_hash_defined
6565 || eh->elf.root.type == bfd_link_hash_defweak)
6566 && ((eh->elf.ref_dynamic && !eh->elf.forced_local)
6567 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6568 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6569 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6570 && (!bfd_link_executable (info)
6571 || info->gc_keep_exported
6572 || info->export_dynamic
6575 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6576 && (eh->elf.versioned >= versioned
6577 || !bfd_hide_sym_by_version (info->version_info,
6578 eh->elf.root.root.string)))))
6581 struct ppc_link_hash_entry *fh;
6583 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6585 /* Function descriptor syms cause the associated
6586 function code sym section to be marked. */
6587 fh = defined_code_entry (eh);
6590 code_sec = fh->elf.root.u.def.section;
6591 code_sec->flags |= SEC_KEEP;
6593 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6594 && opd_entry_value (eh->elf.root.u.def.section,
6595 eh->elf.root.u.def.value,
6596 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6597 code_sec->flags |= SEC_KEEP;
6603 /* Return the section that should be marked against GC for a given
6607 ppc64_elf_gc_mark_hook (asection *sec,
6608 struct bfd_link_info *info,
6609 Elf_Internal_Rela *rel,
6610 struct elf_link_hash_entry *h,
6611 Elf_Internal_Sym *sym)
6615 /* Syms return NULL if we're marking .opd, so we avoid marking all
6616 function sections, as all functions are referenced in .opd. */
6618 if (get_opd_info (sec) != NULL)
6623 enum elf_ppc64_reloc_type r_type;
6624 struct ppc_link_hash_entry *eh, *fh, *fdh;
6626 r_type = ELF64_R_TYPE (rel->r_info);
6629 case R_PPC64_GNU_VTINHERIT:
6630 case R_PPC64_GNU_VTENTRY:
6634 switch (h->root.type)
6636 case bfd_link_hash_defined:
6637 case bfd_link_hash_defweak:
6638 eh = (struct ppc_link_hash_entry *) h;
6639 fdh = defined_func_desc (eh);
6642 /* -mcall-aixdesc code references the dot-symbol on
6643 a call reloc. Mark the function descriptor too
6644 against garbage collection. */
6646 if (fdh->elf.is_weakalias)
6647 weakdef (&fdh->elf)->mark = 1;
6651 /* Function descriptor syms cause the associated
6652 function code sym section to be marked. */
6653 fh = defined_code_entry (eh);
6656 /* They also mark their opd section. */
6657 eh->elf.root.u.def.section->gc_mark = 1;
6659 rsec = fh->elf.root.u.def.section;
6661 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6662 && opd_entry_value (eh->elf.root.u.def.section,
6663 eh->elf.root.u.def.value,
6664 &rsec, NULL, FALSE) != (bfd_vma) -1)
6665 eh->elf.root.u.def.section->gc_mark = 1;
6667 rsec = h->root.u.def.section;
6670 case bfd_link_hash_common:
6671 rsec = h->root.u.c.p->section;
6675 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6681 struct _opd_sec_data *opd;
6683 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6684 opd = get_opd_info (rsec);
6685 if (opd != NULL && opd->func_sec != NULL)
6689 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6696 /* The maximum size of .sfpr. */
6697 #define SFPR_MAX (218*4)
6699 struct sfpr_def_parms
6701 const char name[12];
6702 unsigned char lo, hi;
6703 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6704 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6707 /* Auto-generate _save*, _rest* functions in .sfpr.
6708 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6712 sfpr_define (struct bfd_link_info *info,
6713 const struct sfpr_def_parms *parm,
6716 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6718 size_t len = strlen (parm->name);
6719 bfd_boolean writing = FALSE;
6725 memcpy (sym, parm->name, len);
6728 for (i = parm->lo; i <= parm->hi; i++)
6730 struct ppc_link_hash_entry *h;
6732 sym[len + 0] = i / 10 + '0';
6733 sym[len + 1] = i % 10 + '0';
6734 h = (struct ppc_link_hash_entry *)
6735 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6736 if (stub_sec != NULL)
6739 && h->elf.root.type == bfd_link_hash_defined
6740 && h->elf.root.u.def.section == htab->sfpr)
6742 struct elf_link_hash_entry *s;
6744 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6745 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6748 if (s->root.type == bfd_link_hash_new
6749 || (s->root.type = bfd_link_hash_defined
6750 && s->root.u.def.section == stub_sec))
6752 s->root.type = bfd_link_hash_defined;
6753 s->root.u.def.section = stub_sec;
6754 s->root.u.def.value = (stub_sec->size - htab->sfpr->size
6755 + h->elf.root.u.def.value);
6758 s->ref_regular_nonweak = 1;
6759 s->forced_local = 1;
6761 s->root.linker_def = 1;
6769 if (!h->elf.def_regular)
6771 h->elf.root.type = bfd_link_hash_defined;
6772 h->elf.root.u.def.section = htab->sfpr;
6773 h->elf.root.u.def.value = htab->sfpr->size;
6774 h->elf.type = STT_FUNC;
6775 h->elf.def_regular = 1;
6777 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6779 if (htab->sfpr->contents == NULL)
6781 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6782 if (htab->sfpr->contents == NULL)
6789 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6791 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6793 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6794 htab->sfpr->size = p - htab->sfpr->contents;
6802 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6804 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6809 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6811 p = savegpr0 (abfd, p, r);
6812 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6814 bfd_put_32 (abfd, BLR, p);
6819 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6821 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6826 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6828 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6830 p = restgpr0 (abfd, p, r);
6831 bfd_put_32 (abfd, MTLR_R0, p);
6835 p = restgpr0 (abfd, p, 30);
6836 p = restgpr0 (abfd, p, 31);
6838 bfd_put_32 (abfd, BLR, p);
6843 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6845 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6850 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6852 p = savegpr1 (abfd, p, r);
6853 bfd_put_32 (abfd, BLR, p);
6858 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6860 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6865 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6867 p = restgpr1 (abfd, p, r);
6868 bfd_put_32 (abfd, BLR, p);
6873 savefpr (bfd *abfd, bfd_byte *p, int r)
6875 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6880 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6882 p = savefpr (abfd, p, r);
6883 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6885 bfd_put_32 (abfd, BLR, p);
6890 restfpr (bfd *abfd, bfd_byte *p, int r)
6892 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6897 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6899 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6901 p = restfpr (abfd, p, r);
6902 bfd_put_32 (abfd, MTLR_R0, p);
6906 p = restfpr (abfd, p, 30);
6907 p = restfpr (abfd, p, 31);
6909 bfd_put_32 (abfd, BLR, p);
6914 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6916 p = savefpr (abfd, p, r);
6917 bfd_put_32 (abfd, BLR, p);
6922 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6924 p = restfpr (abfd, p, r);
6925 bfd_put_32 (abfd, BLR, p);
6930 savevr (bfd *abfd, bfd_byte *p, int r)
6932 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6934 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6939 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6941 p = savevr (abfd, p, r);
6942 bfd_put_32 (abfd, BLR, p);
6947 restvr (bfd *abfd, bfd_byte *p, int r)
6949 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6951 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6956 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6958 p = restvr (abfd, p, r);
6959 bfd_put_32 (abfd, BLR, p);
6963 /* Called via elf_link_hash_traverse to transfer dynamic linking
6964 information on function code symbol entries to their corresponding
6965 function descriptor symbol entries. */
6968 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6970 struct bfd_link_info *info;
6971 struct ppc_link_hash_table *htab;
6972 struct ppc_link_hash_entry *fh;
6973 struct ppc_link_hash_entry *fdh;
6974 bfd_boolean force_local;
6976 fh = (struct ppc_link_hash_entry *) h;
6977 if (fh->elf.root.type == bfd_link_hash_indirect)
6983 if (fh->elf.root.root.string[0] != '.'
6984 || fh->elf.root.root.string[1] == '\0')
6988 htab = ppc_hash_table (info);
6992 /* Find the corresponding function descriptor symbol. */
6993 fdh = lookup_fdh (fh, htab);
6995 /* Resolve undefined references to dot-symbols as the value
6996 in the function descriptor, if we have one in a regular object.
6997 This is to satisfy cases like ".quad .foo". Calls to functions
6998 in dynamic objects are handled elsewhere. */
6999 if ((fh->elf.root.type == bfd_link_hash_undefined
7000 || fh->elf.root.type == bfd_link_hash_undefweak)
7001 && (fdh->elf.root.type == bfd_link_hash_defined
7002 || fdh->elf.root.type == bfd_link_hash_defweak)
7003 && get_opd_info (fdh->elf.root.u.def.section) != NULL
7004 && opd_entry_value (fdh->elf.root.u.def.section,
7005 fdh->elf.root.u.def.value,
7006 &fh->elf.root.u.def.section,
7007 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
7009 fh->elf.root.type = fdh->elf.root.type;
7010 fh->elf.forced_local = 1;
7011 fh->elf.def_regular = fdh->elf.def_regular;
7012 fh->elf.def_dynamic = fdh->elf.def_dynamic;
7015 if (!fh->elf.dynamic)
7017 struct plt_entry *ent;
7019 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
7020 if (ent->plt.refcount > 0)
7026 /* Create a descriptor as undefined if necessary. */
7028 && !bfd_link_executable (info)
7029 && (fh->elf.root.type == bfd_link_hash_undefined
7030 || fh->elf.root.type == bfd_link_hash_undefweak))
7032 fdh = make_fdh (info, fh);
7037 /* We can't support overriding of symbols on a fake descriptor. */
7040 && (fh->elf.root.type == bfd_link_hash_defined
7041 || fh->elf.root.type == bfd_link_hash_defweak))
7042 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
7044 /* Transfer dynamic linking information to the function descriptor. */
7047 fdh->elf.ref_regular |= fh->elf.ref_regular;
7048 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
7049 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7050 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
7051 fdh->elf.dynamic |= fh->elf.dynamic;
7052 fdh->elf.needs_plt |= (fh->elf.needs_plt
7053 || fh->elf.type == STT_FUNC
7054 || fh->elf.type == STT_GNU_IFUNC);
7055 move_plt_plist (fh, fdh);
7057 if (!fdh->elf.forced_local
7058 && fh->elf.dynindx != -1)
7059 if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
7063 /* Now that the info is on the function descriptor, clear the
7064 function code sym info. Any function code syms for which we
7065 don't have a definition in a regular file, we force local.
7066 This prevents a shared library from exporting syms that have
7067 been imported from another library. Function code syms that
7068 are really in the library we must leave global to prevent the
7069 linker dragging in a definition from a static library. */
7070 force_local = (!fh->elf.def_regular
7072 || !fdh->elf.def_regular
7073 || fdh->elf.forced_local);
7074 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7079 static const struct sfpr_def_parms save_res_funcs[] =
7081 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7082 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7083 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7084 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7085 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7086 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7087 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7088 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7089 { "._savef", 14, 31, savefpr, savefpr1_tail },
7090 { "._restf", 14, 31, restfpr, restfpr1_tail },
7091 { "_savevr_", 20, 31, savevr, savevr_tail },
7092 { "_restvr_", 20, 31, restvr, restvr_tail }
7095 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7096 this hook to a) provide some gcc support functions, and b) transfer
7097 dynamic linking information gathered so far on function code symbol
7098 entries, to their corresponding function descriptor symbol entries. */
7101 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7102 struct bfd_link_info *info)
7104 struct ppc_link_hash_table *htab;
7106 htab = ppc_hash_table (info);
7110 /* Provide any missing _save* and _rest* functions. */
7111 if (htab->sfpr != NULL)
7115 htab->sfpr->size = 0;
7116 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7117 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7119 if (htab->sfpr->size == 0)
7120 htab->sfpr->flags |= SEC_EXCLUDE;
7123 if (bfd_link_relocatable (info))
7126 if (htab->elf.hgot != NULL)
7128 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7129 /* Make .TOC. defined so as to prevent it being made dynamic.
7130 The wrong value here is fixed later in ppc64_elf_set_toc. */
7131 if (!htab->elf.hgot->def_regular
7132 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7134 htab->elf.hgot->root.type = bfd_link_hash_defined;
7135 htab->elf.hgot->root.u.def.value = 0;
7136 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7137 htab->elf.hgot->def_regular = 1;
7138 htab->elf.hgot->root.linker_def = 1;
7140 htab->elf.hgot->type = STT_OBJECT;
7141 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7145 if (htab->need_func_desc_adj)
7147 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7148 htab->need_func_desc_adj = 0;
7154 /* Find dynamic relocs for H that apply to read-only sections. */
7157 readonly_dynrelocs (struct elf_link_hash_entry *h)
7159 struct ppc_link_hash_entry *eh;
7160 struct elf_dyn_relocs *p;
7162 eh = (struct ppc_link_hash_entry *) h;
7163 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7165 asection *s = p->sec->output_section;
7167 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7173 /* Return true if we have dynamic relocs against H or any of its weak
7174 aliases, that apply to read-only sections. Cannot be used after
7175 size_dynamic_sections. */
7178 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7180 struct ppc_link_hash_entry *eh;
7182 eh = (struct ppc_link_hash_entry *) h;
7185 if (readonly_dynrelocs (&eh->elf))
7187 eh = (struct ppc_link_hash_entry *) eh->elf.u.alias;
7188 } while (eh != NULL && &eh->elf != h);
7193 /* Return whether EH has pc-relative dynamic relocs. */
7196 pc_dynrelocs (struct ppc_link_hash_entry *eh)
7198 struct elf_dyn_relocs *p;
7200 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7201 if (p->pc_count != 0)
7206 /* Return true if a global entry stub will be created for H. Valid
7207 for ELFv2 before plt entries have been allocated. */
7210 global_entry_stub (struct elf_link_hash_entry *h)
7212 struct plt_entry *pent;
7214 if (!h->pointer_equality_needed
7218 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7219 if (pent->plt.refcount > 0
7220 && pent->addend == 0)
7226 /* Adjust a symbol defined by a dynamic object and referenced by a
7227 regular object. The current definition is in some section of the
7228 dynamic object, but we're not including those sections. We have to
7229 change the definition to something the rest of the link can
7233 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7234 struct elf_link_hash_entry *h)
7236 struct ppc_link_hash_table *htab;
7239 htab = ppc_hash_table (info);
7243 /* Deal with function syms. */
7244 if (h->type == STT_FUNC
7245 || h->type == STT_GNU_IFUNC
7248 bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res
7249 || SYMBOL_CALLS_LOCAL (info, h)
7250 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
7251 /* Discard dyn_relocs when non-pic if we've decided that a
7252 function symbol is local and not an ifunc. We keep dynamic
7253 relocs for ifuncs when local rather than always emitting a
7254 plt call stub for them and defining the symbol on the call
7255 stub. We can't do that for ELFv1 anyway (a function symbol
7256 is defined on a descriptor, not code) and it can be faster at
7257 run-time due to not needing to bounce through a stub. The
7258 dyn_relocs for ifuncs will be applied even in a static
7260 if (!bfd_link_pic (info)
7261 && h->type != STT_GNU_IFUNC
7263 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7265 /* Clear procedure linkage table information for any symbol that
7266 won't need a .plt entry. */
7267 struct plt_entry *ent;
7268 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7269 if (ent->plt.refcount > 0)
7272 || (h->type != STT_GNU_IFUNC
7274 && (htab->can_convert_all_inline_plt
7275 || (((struct ppc_link_hash_entry *) h)->tls_mask
7276 & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)))
7278 h->plt.plist = NULL;
7280 h->pointer_equality_needed = 0;
7282 else if (abiversion (info->output_bfd) >= 2)
7284 /* Taking a function's address in a read/write section
7285 doesn't require us to define the function symbol in the
7286 executable on a global entry stub. A dynamic reloc can
7287 be used instead. The reason we prefer a few more dynamic
7288 relocs is that calling via a global entry stub costs a
7289 few more instructions, and pointer_equality_needed causes
7290 extra work in ld.so when resolving these symbols. */
7291 if (global_entry_stub (h))
7293 if (!readonly_dynrelocs (h))
7295 h->pointer_equality_needed = 0;
7296 /* If we haven't seen a branch reloc then we don't need
7299 h->plt.plist = NULL;
7301 else if (!bfd_link_pic (info))
7302 /* We are going to be defining the function symbol on the
7303 plt stub, so no dyn_relocs needed when non-pic. */
7304 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7307 /* ELFv2 function symbols can't have copy relocs. */
7310 else if (!h->needs_plt
7311 && !readonly_dynrelocs (h))
7313 /* If we haven't seen a branch reloc then we don't need a
7315 h->plt.plist = NULL;
7316 h->pointer_equality_needed = 0;
7321 h->plt.plist = NULL;
7323 /* If this is a weak symbol, and there is a real definition, the
7324 processor independent code will have arranged for us to see the
7325 real definition first, and we can just use the same value. */
7326 if (h->is_weakalias)
7328 struct elf_link_hash_entry *def = weakdef (h);
7329 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
7330 h->root.u.def.section = def->root.u.def.section;
7331 h->root.u.def.value = def->root.u.def.value;
7332 if (def->root.u.def.section == htab->elf.sdynbss
7333 || def->root.u.def.section == htab->elf.sdynrelro)
7334 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7338 /* If we are creating a shared library, we must presume that the
7339 only references to the symbol are via the global offset table.
7340 For such cases we need not do anything here; the relocations will
7341 be handled correctly by relocate_section. */
7342 if (bfd_link_pic (info))
7345 /* If there are no references to this symbol that do not use the
7346 GOT, we don't need to generate a copy reloc. */
7347 if (!h->non_got_ref)
7350 /* Don't generate a copy reloc for symbols defined in the executable. */
7351 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7353 /* If -z nocopyreloc was given, don't generate them either. */
7354 || info->nocopyreloc
7356 /* If we don't find any dynamic relocs in read-only sections, then
7357 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7358 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
7360 /* Protected variables do not work with .dynbss. The copy in
7361 .dynbss won't be used by the shared library with the protected
7362 definition for the variable. Text relocations are preferable
7363 to an incorrect program. */
7364 || h->protected_def)
7367 if (h->plt.plist != NULL)
7369 /* We should never get here, but unfortunately there are versions
7370 of gcc out there that improperly (for this ABI) put initialized
7371 function pointers, vtable refs and suchlike in read-only
7372 sections. Allow them to proceed, but warn that this might
7373 break at runtime. */
7374 info->callbacks->einfo
7375 (_("%P: copy reloc against `%pT' requires lazy plt linking; "
7376 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7377 h->root.root.string);
7380 /* This is a reference to a symbol defined by a dynamic object which
7381 is not a function. */
7383 /* We must allocate the symbol in our .dynbss section, which will
7384 become part of the .bss section of the executable. There will be
7385 an entry for this symbol in the .dynsym section. The dynamic
7386 object will contain position independent code, so all references
7387 from the dynamic object to this symbol will go through the global
7388 offset table. The dynamic linker will use the .dynsym entry to
7389 determine the address it must put in the global offset table, so
7390 both the dynamic object and the regular object will refer to the
7391 same memory location for the variable. */
7392 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7394 s = htab->elf.sdynrelro;
7395 srel = htab->elf.sreldynrelro;
7399 s = htab->elf.sdynbss;
7400 srel = htab->elf.srelbss;
7402 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7404 /* We must generate a R_PPC64_COPY reloc to tell the dynamic
7405 linker to copy the initial value out of the dynamic object
7406 and into the runtime process image. */
7407 srel->size += sizeof (Elf64_External_Rela);
7411 /* We no longer want dyn_relocs. */
7412 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7413 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7416 /* If given a function descriptor symbol, hide both the function code
7417 sym and the descriptor. */
7419 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7420 struct elf_link_hash_entry *h,
7421 bfd_boolean force_local)
7423 struct ppc_link_hash_entry *eh;
7424 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7426 eh = (struct ppc_link_hash_entry *) h;
7427 if (eh->is_func_descriptor)
7429 struct ppc_link_hash_entry *fh = eh->oh;
7434 struct elf_link_hash_table *htab = elf_hash_table (info);
7437 /* We aren't supposed to use alloca in BFD because on
7438 systems which do not have alloca the version in libiberty
7439 calls xmalloc, which might cause the program to crash
7440 when it runs out of memory. This function doesn't have a
7441 return status, so there's no way to gracefully return an
7442 error. So cheat. We know that string[-1] can be safely
7443 accessed; It's either a string in an ELF string table,
7444 or allocated in an objalloc structure. */
7446 p = eh->elf.root.root.string - 1;
7449 fh = (struct ppc_link_hash_entry *)
7450 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7453 /* Unfortunately, if it so happens that the string we were
7454 looking for was allocated immediately before this string,
7455 then we overwrote the string terminator. That's the only
7456 reason the lookup should fail. */
7459 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7460 while (q >= eh->elf.root.root.string && *q == *p)
7462 if (q < eh->elf.root.root.string && *p == '.')
7463 fh = (struct ppc_link_hash_entry *)
7464 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7473 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7478 get_sym_h (struct elf_link_hash_entry **hp,
7479 Elf_Internal_Sym **symp,
7481 unsigned char **tls_maskp,
7482 Elf_Internal_Sym **locsymsp,
7483 unsigned long r_symndx,
7486 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7488 if (r_symndx >= symtab_hdr->sh_info)
7490 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7491 struct elf_link_hash_entry *h;
7493 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7494 h = elf_follow_link (h);
7502 if (symsecp != NULL)
7504 asection *symsec = NULL;
7505 if (h->root.type == bfd_link_hash_defined
7506 || h->root.type == bfd_link_hash_defweak)
7507 symsec = h->root.u.def.section;
7511 if (tls_maskp != NULL)
7513 struct ppc_link_hash_entry *eh;
7515 eh = (struct ppc_link_hash_entry *) h;
7516 *tls_maskp = &eh->tls_mask;
7521 Elf_Internal_Sym *sym;
7522 Elf_Internal_Sym *locsyms = *locsymsp;
7524 if (locsyms == NULL)
7526 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7527 if (locsyms == NULL)
7528 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7529 symtab_hdr->sh_info,
7530 0, NULL, NULL, NULL);
7531 if (locsyms == NULL)
7533 *locsymsp = locsyms;
7535 sym = locsyms + r_symndx;
7543 if (symsecp != NULL)
7544 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7546 if (tls_maskp != NULL)
7548 struct got_entry **lgot_ents;
7549 unsigned char *tls_mask;
7552 lgot_ents = elf_local_got_ents (ibfd);
7553 if (lgot_ents != NULL)
7555 struct plt_entry **local_plt = (struct plt_entry **)
7556 (lgot_ents + symtab_hdr->sh_info);
7557 unsigned char *lgot_masks = (unsigned char *)
7558 (local_plt + symtab_hdr->sh_info);
7559 tls_mask = &lgot_masks[r_symndx];
7561 *tls_maskp = tls_mask;
7567 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7568 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7569 type suitable for optimization, and 1 otherwise. */
7572 get_tls_mask (unsigned char **tls_maskp,
7573 unsigned long *toc_symndx,
7574 bfd_vma *toc_addend,
7575 Elf_Internal_Sym **locsymsp,
7576 const Elf_Internal_Rela *rel,
7579 unsigned long r_symndx;
7581 struct elf_link_hash_entry *h;
7582 Elf_Internal_Sym *sym;
7586 r_symndx = ELF64_R_SYM (rel->r_info);
7587 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7590 if ((*tls_maskp != NULL
7591 && (**tls_maskp & TLS_TLS) != 0
7592 && **tls_maskp != (TLS_TLS | TLS_MARK))
7594 || ppc64_elf_section_data (sec) == NULL
7595 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7598 /* Look inside a TOC section too. */
7601 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7602 off = h->root.u.def.value;
7605 off = sym->st_value;
7606 off += rel->r_addend;
7607 BFD_ASSERT (off % 8 == 0);
7608 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7609 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7610 if (toc_symndx != NULL)
7611 *toc_symndx = r_symndx;
7612 if (toc_addend != NULL)
7613 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7614 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7616 if ((h == NULL || is_static_defined (h))
7617 && (next_r == -1 || next_r == -2))
7622 /* Find (or create) an entry in the tocsave hash table. */
7624 static struct tocsave_entry *
7625 tocsave_find (struct ppc_link_hash_table *htab,
7626 enum insert_option insert,
7627 Elf_Internal_Sym **local_syms,
7628 const Elf_Internal_Rela *irela,
7631 unsigned long r_indx;
7632 struct elf_link_hash_entry *h;
7633 Elf_Internal_Sym *sym;
7634 struct tocsave_entry ent, *p;
7636 struct tocsave_entry **slot;
7638 r_indx = ELF64_R_SYM (irela->r_info);
7639 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7641 if (ent.sec == NULL || ent.sec->output_section == NULL)
7644 (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd);
7649 ent.offset = h->root.u.def.value;
7651 ent.offset = sym->st_value;
7652 ent.offset += irela->r_addend;
7654 hash = tocsave_htab_hash (&ent);
7655 slot = ((struct tocsave_entry **)
7656 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7662 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7671 /* Adjust all global syms defined in opd sections. In gcc generated
7672 code for the old ABI, these will already have been done. */
7675 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7677 struct ppc_link_hash_entry *eh;
7679 struct _opd_sec_data *opd;
7681 if (h->root.type == bfd_link_hash_indirect)
7684 if (h->root.type != bfd_link_hash_defined
7685 && h->root.type != bfd_link_hash_defweak)
7688 eh = (struct ppc_link_hash_entry *) h;
7689 if (eh->adjust_done)
7692 sym_sec = eh->elf.root.u.def.section;
7693 opd = get_opd_info (sym_sec);
7694 if (opd != NULL && opd->adjust != NULL)
7696 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7699 /* This entry has been deleted. */
7700 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7703 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7704 if (discarded_section (dsec))
7706 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7710 eh->elf.root.u.def.value = 0;
7711 eh->elf.root.u.def.section = dsec;
7714 eh->elf.root.u.def.value += adjust;
7715 eh->adjust_done = 1;
7720 /* Handles decrementing dynamic reloc counts for the reloc specified by
7721 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7722 have already been determined. */
7725 dec_dynrel_count (bfd_vma r_info,
7727 struct bfd_link_info *info,
7728 Elf_Internal_Sym **local_syms,
7729 struct elf_link_hash_entry *h,
7730 Elf_Internal_Sym *sym)
7732 enum elf_ppc64_reloc_type r_type;
7733 asection *sym_sec = NULL;
7735 /* Can this reloc be dynamic? This switch, and later tests here
7736 should be kept in sync with the code in check_relocs. */
7737 r_type = ELF64_R_TYPE (r_info);
7743 case R_PPC64_TPREL16:
7744 case R_PPC64_TPREL16_LO:
7745 case R_PPC64_TPREL16_HI:
7746 case R_PPC64_TPREL16_HA:
7747 case R_PPC64_TPREL16_DS:
7748 case R_PPC64_TPREL16_LO_DS:
7749 case R_PPC64_TPREL16_HIGH:
7750 case R_PPC64_TPREL16_HIGHA:
7751 case R_PPC64_TPREL16_HIGHER:
7752 case R_PPC64_TPREL16_HIGHERA:
7753 case R_PPC64_TPREL16_HIGHEST:
7754 case R_PPC64_TPREL16_HIGHESTA:
7755 case R_PPC64_TPREL64:
7756 case R_PPC64_DTPMOD64:
7757 case R_PPC64_DTPREL64:
7758 case R_PPC64_ADDR64:
7762 case R_PPC64_ADDR14:
7763 case R_PPC64_ADDR14_BRNTAKEN:
7764 case R_PPC64_ADDR14_BRTAKEN:
7765 case R_PPC64_ADDR16:
7766 case R_PPC64_ADDR16_DS:
7767 case R_PPC64_ADDR16_HA:
7768 case R_PPC64_ADDR16_HI:
7769 case R_PPC64_ADDR16_HIGH:
7770 case R_PPC64_ADDR16_HIGHA:
7771 case R_PPC64_ADDR16_HIGHER:
7772 case R_PPC64_ADDR16_HIGHERA:
7773 case R_PPC64_ADDR16_HIGHEST:
7774 case R_PPC64_ADDR16_HIGHESTA:
7775 case R_PPC64_ADDR16_LO:
7776 case R_PPC64_ADDR16_LO_DS:
7777 case R_PPC64_ADDR24:
7778 case R_PPC64_ADDR32:
7779 case R_PPC64_UADDR16:
7780 case R_PPC64_UADDR32:
7781 case R_PPC64_UADDR64:
7786 if (local_syms != NULL)
7788 unsigned long r_symndx;
7789 bfd *ibfd = sec->owner;
7791 r_symndx = ELF64_R_SYM (r_info);
7792 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7796 if ((bfd_link_pic (info)
7797 && (must_be_dyn_reloc (info, r_type)
7799 && (!SYMBOLIC_BIND (info, h)
7800 || h->root.type == bfd_link_hash_defweak
7801 || !h->def_regular))))
7802 || (ELIMINATE_COPY_RELOCS
7803 && !bfd_link_pic (info)
7805 && (h->root.type == bfd_link_hash_defweak
7806 || !h->def_regular)))
7813 struct elf_dyn_relocs *p;
7814 struct elf_dyn_relocs **pp;
7815 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7817 /* elf_gc_sweep may have already removed all dyn relocs associated
7818 with local syms for a given section. Also, symbol flags are
7819 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7820 report a dynreloc miscount. */
7821 if (*pp == NULL && info->gc_sections)
7824 while ((p = *pp) != NULL)
7828 if (!must_be_dyn_reloc (info, r_type))
7840 struct ppc_dyn_relocs *p;
7841 struct ppc_dyn_relocs **pp;
7843 bfd_boolean is_ifunc;
7845 if (local_syms == NULL)
7846 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7847 if (sym_sec == NULL)
7850 vpp = &elf_section_data (sym_sec)->local_dynrel;
7851 pp = (struct ppc_dyn_relocs **) vpp;
7853 if (*pp == NULL && info->gc_sections)
7856 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7857 while ((p = *pp) != NULL)
7859 if (p->sec == sec && p->ifunc == is_ifunc)
7870 /* xgettext:c-format */
7871 _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"),
7873 bfd_set_error (bfd_error_bad_value);
7877 /* Remove unused Official Procedure Descriptor entries. Currently we
7878 only remove those associated with functions in discarded link-once
7879 sections, or weakly defined functions that have been overridden. It
7880 would be possible to remove many more entries for statically linked
7884 ppc64_elf_edit_opd (struct bfd_link_info *info)
7887 bfd_boolean some_edited = FALSE;
7888 asection *need_pad = NULL;
7889 struct ppc_link_hash_table *htab;
7891 htab = ppc_hash_table (info);
7895 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7898 Elf_Internal_Rela *relstart, *rel, *relend;
7899 Elf_Internal_Shdr *symtab_hdr;
7900 Elf_Internal_Sym *local_syms;
7901 struct _opd_sec_data *opd;
7902 bfd_boolean need_edit, add_aux_fields, broken;
7903 bfd_size_type cnt_16b = 0;
7905 if (!is_ppc64_elf (ibfd))
7908 sec = bfd_get_section_by_name (ibfd, ".opd");
7909 if (sec == NULL || sec->size == 0)
7912 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7915 if (sec->output_section == bfd_abs_section_ptr)
7918 /* Look through the section relocs. */
7919 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7923 symtab_hdr = &elf_symtab_hdr (ibfd);
7925 /* Read the relocations. */
7926 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7928 if (relstart == NULL)
7931 /* First run through the relocs to check they are sane, and to
7932 determine whether we need to edit this opd section. */
7936 relend = relstart + sec->reloc_count;
7937 for (rel = relstart; rel < relend; )
7939 enum elf_ppc64_reloc_type r_type;
7940 unsigned long r_symndx;
7942 struct elf_link_hash_entry *h;
7943 Elf_Internal_Sym *sym;
7946 /* .opd contains an array of 16 or 24 byte entries. We're
7947 only interested in the reloc pointing to a function entry
7949 offset = rel->r_offset;
7950 if (rel + 1 == relend
7951 || rel[1].r_offset != offset + 8)
7953 /* If someone messes with .opd alignment then after a
7954 "ld -r" we might have padding in the middle of .opd.
7955 Also, there's nothing to prevent someone putting
7956 something silly in .opd with the assembler. No .opd
7957 optimization for them! */
7960 (_("%pB: .opd is not a regular array of opd entries"), ibfd);
7965 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7966 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7969 /* xgettext:c-format */
7970 (_("%pB: unexpected reloc type %u in .opd section"),
7976 r_symndx = ELF64_R_SYM (rel->r_info);
7977 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7981 if (sym_sec == NULL || sym_sec->owner == NULL)
7983 const char *sym_name;
7985 sym_name = h->root.root.string;
7987 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7991 /* xgettext:c-format */
7992 (_("%pB: undefined sym `%s' in .opd section"),
7998 /* opd entries are always for functions defined in the
7999 current input bfd. If the symbol isn't defined in the
8000 input bfd, then we won't be using the function in this
8001 bfd; It must be defined in a linkonce section in another
8002 bfd, or is weak. It's also possible that we are
8003 discarding the function due to a linker script /DISCARD/,
8004 which we test for via the output_section. */
8005 if (sym_sec->owner != ibfd
8006 || sym_sec->output_section == bfd_abs_section_ptr)
8010 if (rel + 1 == relend
8011 || (rel + 2 < relend
8012 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
8017 if (sec->size == offset + 24)
8022 if (sec->size == offset + 16)
8029 else if (rel + 1 < relend
8030 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
8031 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
8033 if (rel[0].r_offset == offset + 16)
8035 else if (rel[0].r_offset != offset + 24)
8042 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
8044 if (!broken && (need_edit || add_aux_fields))
8046 Elf_Internal_Rela *write_rel;
8047 Elf_Internal_Shdr *rel_hdr;
8048 bfd_byte *rptr, *wptr;
8049 bfd_byte *new_contents;
8052 new_contents = NULL;
8053 amt = OPD_NDX (sec->size) * sizeof (long);
8054 opd = &ppc64_elf_section_data (sec)->u.opd;
8055 opd->adjust = bfd_zalloc (sec->owner, amt);
8056 if (opd->adjust == NULL)
8059 /* This seems a waste of time as input .opd sections are all
8060 zeros as generated by gcc, but I suppose there's no reason
8061 this will always be so. We might start putting something in
8062 the third word of .opd entries. */
8063 if ((sec->flags & SEC_IN_MEMORY) == 0)
8066 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
8071 if (local_syms != NULL
8072 && symtab_hdr->contents != (unsigned char *) local_syms)
8074 if (elf_section_data (sec)->relocs != relstart)
8078 sec->contents = loc;
8079 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8082 elf_section_data (sec)->relocs = relstart;
8084 new_contents = sec->contents;
8087 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
8088 if (new_contents == NULL)
8092 wptr = new_contents;
8093 rptr = sec->contents;
8094 write_rel = relstart;
8095 for (rel = relstart; rel < relend; )
8097 unsigned long r_symndx;
8099 struct elf_link_hash_entry *h;
8100 struct ppc_link_hash_entry *fdh = NULL;
8101 Elf_Internal_Sym *sym;
8103 Elf_Internal_Rela *next_rel;
8106 r_symndx = ELF64_R_SYM (rel->r_info);
8107 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8112 if (next_rel + 1 == relend
8113 || (next_rel + 2 < relend
8114 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
8117 /* See if the .opd entry is full 24 byte or
8118 16 byte (with fd_aux entry overlapped with next
8121 if (next_rel == relend)
8123 if (sec->size == rel->r_offset + 16)
8126 else if (next_rel->r_offset == rel->r_offset + 16)
8130 && h->root.root.string[0] == '.')
8132 fdh = ((struct ppc_link_hash_entry *) h)->oh;
8135 fdh = ppc_follow_link (fdh);
8136 if (fdh->elf.root.type != bfd_link_hash_defined
8137 && fdh->elf.root.type != bfd_link_hash_defweak)
8142 skip = (sym_sec->owner != ibfd
8143 || sym_sec->output_section == bfd_abs_section_ptr);
8146 if (fdh != NULL && sym_sec->owner == ibfd)
8148 /* Arrange for the function descriptor sym
8150 fdh->elf.root.u.def.value = 0;
8151 fdh->elf.root.u.def.section = sym_sec;
8153 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8155 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8160 if (!dec_dynrel_count (rel->r_info, sec, info,
8164 if (++rel == next_rel)
8167 r_symndx = ELF64_R_SYM (rel->r_info);
8168 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8175 /* We'll be keeping this opd entry. */
8180 /* Redefine the function descriptor symbol to
8181 this location in the opd section. It is
8182 necessary to update the value here rather
8183 than using an array of adjustments as we do
8184 for local symbols, because various places
8185 in the generic ELF code use the value
8186 stored in u.def.value. */
8187 fdh->elf.root.u.def.value = wptr - new_contents;
8188 fdh->adjust_done = 1;
8191 /* Local syms are a bit tricky. We could
8192 tweak them as they can be cached, but
8193 we'd need to look through the local syms
8194 for the function descriptor sym which we
8195 don't have at the moment. So keep an
8196 array of adjustments. */
8197 adjust = (wptr - new_contents) - (rptr - sec->contents);
8198 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8201 memcpy (wptr, rptr, opd_ent_size);
8202 wptr += opd_ent_size;
8203 if (add_aux_fields && opd_ent_size == 16)
8205 memset (wptr, '\0', 8);
8209 /* We need to adjust any reloc offsets to point to the
8211 for ( ; rel != next_rel; ++rel)
8213 rel->r_offset += adjust;
8214 if (write_rel != rel)
8215 memcpy (write_rel, rel, sizeof (*rel));
8220 rptr += opd_ent_size;
8223 sec->size = wptr - new_contents;
8224 sec->reloc_count = write_rel - relstart;
8227 free (sec->contents);
8228 sec->contents = new_contents;
8231 /* Fudge the header size too, as this is used later in
8232 elf_bfd_final_link if we are emitting relocs. */
8233 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8234 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8237 else if (elf_section_data (sec)->relocs != relstart)
8240 if (local_syms != NULL
8241 && symtab_hdr->contents != (unsigned char *) local_syms)
8243 if (!info->keep_memory)
8246 symtab_hdr->contents = (unsigned char *) local_syms;
8251 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8253 /* If we are doing a final link and the last .opd entry is just 16 byte
8254 long, add a 8 byte padding after it. */
8255 if (need_pad != NULL && !bfd_link_relocatable (info))
8259 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8261 BFD_ASSERT (need_pad->size > 0);
8263 p = bfd_malloc (need_pad->size + 8);
8267 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8268 p, 0, need_pad->size))
8271 need_pad->contents = p;
8272 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8276 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8280 need_pad->contents = p;
8283 memset (need_pad->contents + need_pad->size, 0, 8);
8284 need_pad->size += 8;
8290 /* Analyze inline PLT call relocations to see whether calls to locally
8291 defined functions can be converted to direct calls. */
8294 ppc64_elf_inline_plt (struct bfd_link_info *info)
8296 struct ppc_link_hash_table *htab;
8299 bfd_vma low_vma, high_vma, limit;
8301 htab = ppc_hash_table (info);
8305 /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is
8306 reduced somewhat to cater for possible stubs that might be added
8307 between the call and its destination. */
8308 if (htab->params->group_size < 0)
8310 limit = -htab->params->group_size;
8316 limit = htab->params->group_size;
8323 for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next)
8324 if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE))
8326 if (low_vma > sec->vma)
8328 if (high_vma < sec->vma + sec->size)
8329 high_vma = sec->vma + sec->size;
8332 /* If a "bl" can reach anywhere in local code sections, then we can
8333 convert all inline PLT sequences to direct calls when the symbol
8335 if (high_vma - low_vma < limit)
8337 htab->can_convert_all_inline_plt = 1;
8341 /* Otherwise, go looking through relocs for cases where a direct
8342 call won't reach. Mark the symbol on any such reloc to disable
8343 the optimization and keep the PLT entry as it seems likely that
8344 this will be better than creating trampolines. Note that this
8345 will disable the optimization for all inline PLT calls to a
8346 particular symbol, not just those that won't reach. The
8347 difficulty in doing a more precise optimization is that the
8348 linker needs to make a decision depending on whether a
8349 particular R_PPC64_PLTCALL insn can be turned into a direct
8350 call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in
8351 the sequence, and there is nothing that ties those relocs
8352 together except their symbol. */
8354 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8356 Elf_Internal_Shdr *symtab_hdr;
8357 Elf_Internal_Sym *local_syms;
8359 if (!is_ppc64_elf (ibfd))
8363 symtab_hdr = &elf_symtab_hdr (ibfd);
8365 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8366 if (ppc64_elf_section_data (sec)->has_pltcall
8367 && !bfd_is_abs_section (sec->output_section))
8369 Elf_Internal_Rela *relstart, *rel, *relend;
8371 /* Read the relocations. */
8372 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8374 if (relstart == NULL)
8377 relend = relstart + sec->reloc_count;
8378 for (rel = relstart; rel < relend; )
8380 enum elf_ppc64_reloc_type r_type;
8381 unsigned long r_symndx;
8383 struct elf_link_hash_entry *h;
8384 Elf_Internal_Sym *sym;
8385 unsigned char *tls_maskp;
8387 r_type = ELF64_R_TYPE (rel->r_info);
8388 if (r_type != R_PPC64_PLTCALL)
8391 r_symndx = ELF64_R_SYM (rel->r_info);
8392 if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms,
8395 if (elf_section_data (sec)->relocs != relstart)
8397 if (local_syms != NULL
8398 && symtab_hdr->contents != (unsigned char *) local_syms)
8403 if (sym_sec != NULL && sym_sec->output_section != NULL)
8407 to = h->root.u.def.value;
8410 to += (rel->r_addend
8411 + sym_sec->output_offset
8412 + sym_sec->output_section->vma);
8413 from = (rel->r_offset
8414 + sec->output_offset
8415 + sec->output_section->vma);
8416 if (to - from + limit < 2 * limit)
8417 *tls_maskp &= ~PLT_KEEP;
8420 if (elf_section_data (sec)->relocs != relstart)
8424 if (local_syms != NULL
8425 && symtab_hdr->contents != (unsigned char *) local_syms)
8427 if (!info->keep_memory)
8430 symtab_hdr->contents = (unsigned char *) local_syms;
8437 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8440 ppc64_elf_tls_setup (struct bfd_link_info *info)
8442 struct ppc_link_hash_table *htab;
8444 htab = ppc_hash_table (info);
8448 if (abiversion (info->output_bfd) == 1)
8451 if (htab->params->no_multi_toc)
8452 htab->do_multi_toc = 0;
8453 else if (!htab->do_multi_toc)
8454 htab->params->no_multi_toc = 1;
8456 /* Default to --no-plt-localentry, as this option can cause problems
8457 with symbol interposition. For example, glibc libpthread.so and
8458 libc.so duplicate many pthread symbols, with a fallback
8459 implementation in libc.so. In some cases the fallback does more
8460 work than the pthread implementation. __pthread_condattr_destroy
8461 is one such symbol: the libpthread.so implementation is
8462 localentry:0 while the libc.so implementation is localentry:8.
8463 An app that "cleverly" uses dlopen to only load necessary
8464 libraries at runtime may omit loading libpthread.so when not
8465 running multi-threaded, which then results in the libc.so
8466 fallback symbols being used and ld.so complaining. Now there
8467 are workarounds in ld (see non_zero_localentry) to detect the
8468 pthread situation, but that may not be the only case where
8469 --plt-localentry can cause trouble. */
8470 if (htab->params->plt_localentry0 < 0)
8471 htab->params->plt_localentry0 = 0;
8472 if (htab->params->plt_localentry0
8473 && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26",
8474 FALSE, FALSE, FALSE) == NULL)
8476 (_("warning: --plt-localentry is especially dangerous without "
8477 "ld.so support to detect ABI violations"));
8479 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8480 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8481 FALSE, FALSE, TRUE));
8482 /* Move dynamic linking info to the function descriptor sym. */
8483 if (htab->tls_get_addr != NULL)
8484 func_desc_adjust (&htab->tls_get_addr->elf, info);
8485 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8486 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8487 FALSE, FALSE, TRUE));
8488 if (htab->params->tls_get_addr_opt)
8490 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8492 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8493 FALSE, FALSE, TRUE);
8495 func_desc_adjust (opt, info);
8496 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8497 FALSE, FALSE, TRUE);
8499 && (opt_fd->root.type == bfd_link_hash_defined
8500 || opt_fd->root.type == bfd_link_hash_defweak))
8502 /* If glibc supports an optimized __tls_get_addr call stub,
8503 signalled by the presence of __tls_get_addr_opt, and we'll
8504 be calling __tls_get_addr via a plt call stub, then
8505 make __tls_get_addr point to __tls_get_addr_opt. */
8506 tga_fd = &htab->tls_get_addr_fd->elf;
8507 if (htab->elf.dynamic_sections_created
8509 && (tga_fd->type == STT_FUNC
8510 || tga_fd->needs_plt)
8511 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8512 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))
8514 struct plt_entry *ent;
8516 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8517 if (ent->plt.refcount > 0)
8521 tga_fd->root.type = bfd_link_hash_indirect;
8522 tga_fd->root.u.i.link = &opt_fd->root;
8523 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8525 if (opt_fd->dynindx != -1)
8527 /* Use __tls_get_addr_opt in dynamic relocations. */
8528 opt_fd->dynindx = -1;
8529 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8530 opt_fd->dynstr_index);
8531 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8534 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8535 tga = &htab->tls_get_addr->elf;
8536 if (opt != NULL && tga != NULL)
8538 tga->root.type = bfd_link_hash_indirect;
8539 tga->root.u.i.link = &opt->root;
8540 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8542 _bfd_elf_link_hash_hide_symbol (info, opt,
8544 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8546 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8547 htab->tls_get_addr_fd->is_func_descriptor = 1;
8548 if (htab->tls_get_addr != NULL)
8550 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8551 htab->tls_get_addr->is_func = 1;
8556 else if (htab->params->tls_get_addr_opt < 0)
8557 htab->params->tls_get_addr_opt = 0;
8559 return _bfd_elf_tls_setup (info->output_bfd, info);
8562 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8566 branch_reloc_hash_match (const bfd *ibfd,
8567 const Elf_Internal_Rela *rel,
8568 const struct ppc_link_hash_entry *hash1,
8569 const struct ppc_link_hash_entry *hash2)
8571 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8572 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8573 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8575 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8577 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8578 struct elf_link_hash_entry *h;
8580 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8581 h = elf_follow_link (h);
8582 if (h == &hash1->elf || h == &hash2->elf)
8588 /* Run through all the TLS relocs looking for optimization
8589 opportunities. The linker has been hacked (see ppc64elf.em) to do
8590 a preliminary section layout so that we know the TLS segment
8591 offsets. We can't optimize earlier because some optimizations need
8592 to know the tp offset, and we need to optimize before allocating
8593 dynamic relocations. */
8596 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8600 struct ppc_link_hash_table *htab;
8601 unsigned char *toc_ref;
8604 if (!bfd_link_executable (info))
8607 htab = ppc_hash_table (info);
8611 /* Make two passes over the relocs. On the first pass, mark toc
8612 entries involved with tls relocs, and check that tls relocs
8613 involved in setting up a tls_get_addr call are indeed followed by
8614 such a call. If they are not, we can't do any tls optimization.
8615 On the second pass twiddle tls_mask flags to notify
8616 relocate_section that optimization can be done, and adjust got
8617 and plt refcounts. */
8619 for (pass = 0; pass < 2; ++pass)
8620 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8622 Elf_Internal_Sym *locsyms = NULL;
8623 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8625 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8626 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8628 Elf_Internal_Rela *relstart, *rel, *relend;
8629 bfd_boolean found_tls_get_addr_arg = 0;
8631 /* Read the relocations. */
8632 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8634 if (relstart == NULL)
8640 relend = relstart + sec->reloc_count;
8641 for (rel = relstart; rel < relend; rel++)
8643 enum elf_ppc64_reloc_type r_type;
8644 unsigned long r_symndx;
8645 struct elf_link_hash_entry *h;
8646 Elf_Internal_Sym *sym;
8648 unsigned char *tls_mask;
8649 unsigned char tls_set, tls_clear, tls_type = 0;
8651 bfd_boolean ok_tprel, is_local;
8652 long toc_ref_index = 0;
8653 int expecting_tls_get_addr = 0;
8654 bfd_boolean ret = FALSE;
8656 r_symndx = ELF64_R_SYM (rel->r_info);
8657 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8661 if (elf_section_data (sec)->relocs != relstart)
8663 if (toc_ref != NULL)
8666 && (elf_symtab_hdr (ibfd).contents
8667 != (unsigned char *) locsyms))
8674 if (h->root.type == bfd_link_hash_defined
8675 || h->root.type == bfd_link_hash_defweak)
8676 value = h->root.u.def.value;
8677 else if (h->root.type == bfd_link_hash_undefweak)
8681 found_tls_get_addr_arg = 0;
8686 /* Symbols referenced by TLS relocs must be of type
8687 STT_TLS. So no need for .opd local sym adjust. */
8688 value = sym->st_value;
8697 && h->root.type == bfd_link_hash_undefweak)
8699 else if (sym_sec != NULL
8700 && sym_sec->output_section != NULL)
8702 value += sym_sec->output_offset;
8703 value += sym_sec->output_section->vma;
8704 value -= htab->elf.tls_sec->vma;
8705 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8706 < (bfd_vma) 1 << 32);
8710 r_type = ELF64_R_TYPE (rel->r_info);
8711 /* If this section has old-style __tls_get_addr calls
8712 without marker relocs, then check that each
8713 __tls_get_addr call reloc is preceded by a reloc
8714 that conceivably belongs to the __tls_get_addr arg
8715 setup insn. If we don't find matching arg setup
8716 relocs, don't do any tls optimization. */
8718 && sec->has_tls_get_addr_call
8720 && (h == &htab->tls_get_addr->elf
8721 || h == &htab->tls_get_addr_fd->elf)
8722 && !found_tls_get_addr_arg
8723 && is_branch_reloc (r_type))
8725 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8726 "TLS optimization disabled\n"),
8727 ibfd, sec, rel->r_offset);
8732 found_tls_get_addr_arg = 0;
8735 case R_PPC64_GOT_TLSLD16:
8736 case R_PPC64_GOT_TLSLD16_LO:
8737 expecting_tls_get_addr = 1;
8738 found_tls_get_addr_arg = 1;
8741 case R_PPC64_GOT_TLSLD16_HI:
8742 case R_PPC64_GOT_TLSLD16_HA:
8743 /* These relocs should never be against a symbol
8744 defined in a shared lib. Leave them alone if
8745 that turns out to be the case. */
8752 tls_type = TLS_TLS | TLS_LD;
8755 case R_PPC64_GOT_TLSGD16:
8756 case R_PPC64_GOT_TLSGD16_LO:
8757 expecting_tls_get_addr = 1;
8758 found_tls_get_addr_arg = 1;
8761 case R_PPC64_GOT_TLSGD16_HI:
8762 case R_PPC64_GOT_TLSGD16_HA:
8768 tls_set = TLS_TLS | TLS_TPRELGD;
8770 tls_type = TLS_TLS | TLS_GD;
8773 case R_PPC64_GOT_TPREL16_DS:
8774 case R_PPC64_GOT_TPREL16_LO_DS:
8775 case R_PPC64_GOT_TPREL16_HI:
8776 case R_PPC64_GOT_TPREL16_HA:
8781 tls_clear = TLS_TPREL;
8782 tls_type = TLS_TLS | TLS_TPREL;
8789 if (rel + 1 < relend
8790 && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info)))
8793 && ELF64_R_TYPE (rel[1].r_info) != R_PPC64_PLTSEQ)
8795 r_symndx = ELF64_R_SYM (rel[1].r_info);
8796 if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms,
8801 struct plt_entry *ent = NULL;
8803 for (ent = h->plt.plist;
8806 if (ent->addend == rel[1].r_addend)
8810 && ent->plt.refcount > 0)
8811 ent->plt.refcount -= 1;
8816 found_tls_get_addr_arg = 1;
8821 case R_PPC64_TOC16_LO:
8822 if (sym_sec == NULL || sym_sec != toc)
8825 /* Mark this toc entry as referenced by a TLS
8826 code sequence. We can do that now in the
8827 case of R_PPC64_TLS, and after checking for
8828 tls_get_addr for the TOC16 relocs. */
8829 if (toc_ref == NULL)
8830 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8831 if (toc_ref == NULL)
8835 value = h->root.u.def.value;
8837 value = sym->st_value;
8838 value += rel->r_addend;
8841 BFD_ASSERT (value < toc->size
8842 && toc->output_offset % 8 == 0);
8843 toc_ref_index = (value + toc->output_offset) / 8;
8844 if (r_type == R_PPC64_TLS
8845 || r_type == R_PPC64_TLSGD
8846 || r_type == R_PPC64_TLSLD)
8848 toc_ref[toc_ref_index] = 1;
8852 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8857 expecting_tls_get_addr = 2;
8860 case R_PPC64_TPREL64:
8864 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8869 tls_set = TLS_EXPLICIT;
8870 tls_clear = TLS_TPREL;
8875 case R_PPC64_DTPMOD64:
8879 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8881 if (rel + 1 < relend
8883 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8884 && rel[1].r_offset == rel->r_offset + 8)
8888 tls_set = TLS_EXPLICIT | TLS_GD;
8891 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8900 tls_set = TLS_EXPLICIT;
8911 if (!expecting_tls_get_addr
8912 || !sec->has_tls_get_addr_call)
8915 if (rel + 1 < relend
8916 && branch_reloc_hash_match (ibfd, rel + 1,
8918 htab->tls_get_addr_fd))
8920 if (expecting_tls_get_addr == 2)
8922 /* Check for toc tls entries. */
8923 unsigned char *toc_tls;
8926 retval = get_tls_mask (&toc_tls, NULL, NULL,
8931 if (toc_tls != NULL)
8933 if ((*toc_tls & TLS_TLS) != 0
8934 && ((*toc_tls & (TLS_GD | TLS_LD)) != 0))
8935 found_tls_get_addr_arg = 1;
8937 toc_ref[toc_ref_index] = 1;
8943 /* Uh oh, we didn't find the expected call. We
8944 could just mark this symbol to exclude it
8945 from tls optimization but it's safer to skip
8946 the entire optimization. */
8947 /* xgettext:c-format */
8948 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8949 "TLS optimization disabled\n"),
8950 ibfd, sec, rel->r_offset);
8955 /* If we don't have old-style __tls_get_addr calls
8956 without TLSGD/TLSLD marker relocs, and we haven't
8957 found a new-style __tls_get_addr call with a
8958 marker for this symbol, then we either have a
8959 broken object file or an -mlongcall style
8960 indirect call to __tls_get_addr without a marker.
8961 Disable optimization in this case. */
8962 if ((tls_clear & (TLS_GD | TLS_LD)) != 0
8963 && (tls_set & TLS_EXPLICIT) == 0
8964 && !sec->has_tls_get_addr_call
8965 && ((*tls_mask & (TLS_TLS | TLS_MARK))
8966 != (TLS_TLS | TLS_MARK)))
8969 if (expecting_tls_get_addr)
8971 struct plt_entry *ent = NULL;
8973 if (htab->tls_get_addr != NULL)
8974 for (ent = htab->tls_get_addr->elf.plt.plist;
8977 if (ent->addend == 0)
8980 if (ent == NULL && htab->tls_get_addr_fd != NULL)
8981 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8984 if (ent->addend == 0)
8988 && ent->plt.refcount > 0)
8989 ent->plt.refcount -= 1;
8995 if ((tls_set & TLS_EXPLICIT) == 0)
8997 struct got_entry *ent;
8999 /* Adjust got entry for this reloc. */
9003 ent = elf_local_got_ents (ibfd)[r_symndx];
9005 for (; ent != NULL; ent = ent->next)
9006 if (ent->addend == rel->r_addend
9007 && ent->owner == ibfd
9008 && ent->tls_type == tls_type)
9015 /* We managed to get rid of a got entry. */
9016 if (ent->got.refcount > 0)
9017 ent->got.refcount -= 1;
9022 /* If we got rid of a DTPMOD/DTPREL reloc pair then
9023 we'll lose one or two dyn relocs. */
9024 if (!dec_dynrel_count (rel->r_info, sec, info,
9028 if (tls_set == (TLS_EXPLICIT | TLS_GD))
9030 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
9036 *tls_mask |= tls_set;
9037 *tls_mask &= ~tls_clear;
9040 if (elf_section_data (sec)->relocs != relstart)
9045 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
9047 if (!info->keep_memory)
9050 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
9054 if (toc_ref != NULL)
9056 htab->do_tls_opt = 1;
9060 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
9061 the values of any global symbols in a toc section that has been
9062 edited. Globals in toc sections should be a rarity, so this function
9063 sets a flag if any are found in toc sections other than the one just
9064 edited, so that further hash table traversals can be avoided. */
9066 struct adjust_toc_info
9069 unsigned long *skip;
9070 bfd_boolean global_toc_syms;
9073 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
9076 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
9078 struct ppc_link_hash_entry *eh;
9079 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
9082 if (h->root.type != bfd_link_hash_defined
9083 && h->root.type != bfd_link_hash_defweak)
9086 eh = (struct ppc_link_hash_entry *) h;
9087 if (eh->adjust_done)
9090 if (eh->elf.root.u.def.section == toc_inf->toc)
9092 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
9093 i = toc_inf->toc->rawsize >> 3;
9095 i = eh->elf.root.u.def.value >> 3;
9097 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
9100 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
9103 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
9104 eh->elf.root.u.def.value = (bfd_vma) i << 3;
9107 eh->elf.root.u.def.value -= toc_inf->skip[i];
9108 eh->adjust_done = 1;
9110 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
9111 toc_inf->global_toc_syms = TRUE;
9116 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
9117 on a _LO variety toc/got reloc. */
9120 ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type)
9122 return ((insn & (0x3f << 26)) == 12u << 26 /* addic */
9123 || (insn & (0x3f << 26)) == 14u << 26 /* addi */
9124 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
9125 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
9126 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
9127 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
9128 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
9129 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
9130 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
9131 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
9132 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
9133 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
9134 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
9135 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
9136 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
9137 || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */
9138 || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
9139 /* Exclude lfqu by testing reloc. If relocs are ever
9140 defined for the reduced D field in psq_lu then those
9141 will need testing too. */
9142 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
9143 || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */
9145 || (insn & (0x3f << 26)) == 60u << 26 /* stfq */
9146 || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
9147 /* Exclude stfqu. psq_stu as above for psq_lu. */
9148 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
9149 || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */
9150 && (insn & 1) == 0));
9153 /* Examine all relocs referencing .toc sections in order to remove
9154 unused .toc entries. */
9157 ppc64_elf_edit_toc (struct bfd_link_info *info)
9160 struct adjust_toc_info toc_inf;
9161 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9163 htab->do_toc_opt = 1;
9164 toc_inf.global_toc_syms = TRUE;
9165 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9167 asection *toc, *sec;
9168 Elf_Internal_Shdr *symtab_hdr;
9169 Elf_Internal_Sym *local_syms;
9170 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
9171 unsigned long *skip, *drop;
9172 unsigned char *used;
9173 unsigned char *keep, last, some_unused;
9175 if (!is_ppc64_elf (ibfd))
9178 toc = bfd_get_section_by_name (ibfd, ".toc");
9181 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
9182 || discarded_section (toc))
9187 symtab_hdr = &elf_symtab_hdr (ibfd);
9189 /* Look at sections dropped from the final link. */
9192 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9194 if (sec->reloc_count == 0
9195 || !discarded_section (sec)
9196 || get_opd_info (sec)
9197 || (sec->flags & SEC_ALLOC) == 0
9198 || (sec->flags & SEC_DEBUGGING) != 0)
9201 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
9202 if (relstart == NULL)
9205 /* Run through the relocs to see which toc entries might be
9207 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9209 enum elf_ppc64_reloc_type r_type;
9210 unsigned long r_symndx;
9212 struct elf_link_hash_entry *h;
9213 Elf_Internal_Sym *sym;
9216 r_type = ELF64_R_TYPE (rel->r_info);
9223 case R_PPC64_TOC16_LO:
9224 case R_PPC64_TOC16_HI:
9225 case R_PPC64_TOC16_HA:
9226 case R_PPC64_TOC16_DS:
9227 case R_PPC64_TOC16_LO_DS:
9231 r_symndx = ELF64_R_SYM (rel->r_info);
9232 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9240 val = h->root.u.def.value;
9242 val = sym->st_value;
9243 val += rel->r_addend;
9245 if (val >= toc->size)
9248 /* Anything in the toc ought to be aligned to 8 bytes.
9249 If not, don't mark as unused. */
9255 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9260 skip[val >> 3] = ref_from_discarded;
9263 if (elf_section_data (sec)->relocs != relstart)
9267 /* For largetoc loads of address constants, we can convert
9268 . addis rx,2,addr@got@ha
9269 . ld ry,addr@got@l(rx)
9271 . addis rx,2,addr@toc@ha
9272 . addi ry,rx,addr@toc@l
9273 when addr is within 2G of the toc pointer. This then means
9274 that the word storing "addr" in the toc is no longer needed. */
9276 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
9277 && toc->output_section->rawsize < (bfd_vma) 1 << 31
9278 && toc->reloc_count != 0)
9280 /* Read toc relocs. */
9281 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9283 if (toc_relocs == NULL)
9286 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9288 enum elf_ppc64_reloc_type r_type;
9289 unsigned long r_symndx;
9291 struct elf_link_hash_entry *h;
9292 Elf_Internal_Sym *sym;
9295 r_type = ELF64_R_TYPE (rel->r_info);
9296 if (r_type != R_PPC64_ADDR64)
9299 r_symndx = ELF64_R_SYM (rel->r_info);
9300 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9305 || sym_sec->output_section == NULL
9306 || discarded_section (sym_sec))
9309 if (!SYMBOL_REFERENCES_LOCAL (info, h))
9314 if (h->type == STT_GNU_IFUNC)
9316 val = h->root.u.def.value;
9320 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9322 val = sym->st_value;
9324 val += rel->r_addend;
9325 val += sym_sec->output_section->vma + sym_sec->output_offset;
9327 /* We don't yet know the exact toc pointer value, but we
9328 know it will be somewhere in the toc section. Don't
9329 optimize if the difference from any possible toc
9330 pointer is outside [ff..f80008000, 7fff7fff]. */
9331 addr = toc->output_section->vma + TOC_BASE_OFF;
9332 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9335 addr = toc->output_section->vma + toc->output_section->rawsize;
9336 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9341 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9346 skip[rel->r_offset >> 3]
9347 |= can_optimize | ((rel - toc_relocs) << 2);
9354 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9358 if (local_syms != NULL
9359 && symtab_hdr->contents != (unsigned char *) local_syms)
9363 && elf_section_data (sec)->relocs != relstart)
9365 if (toc_relocs != NULL
9366 && elf_section_data (toc)->relocs != toc_relocs)
9373 /* Now check all kept sections that might reference the toc.
9374 Check the toc itself last. */
9375 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9378 sec = (sec == toc ? NULL
9379 : sec->next == NULL ? toc
9380 : sec->next == toc && toc->next ? toc->next
9385 if (sec->reloc_count == 0
9386 || discarded_section (sec)
9387 || get_opd_info (sec)
9388 || (sec->flags & SEC_ALLOC) == 0
9389 || (sec->flags & SEC_DEBUGGING) != 0)
9392 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9394 if (relstart == NULL)
9400 /* Mark toc entries referenced as used. */
9404 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9406 enum elf_ppc64_reloc_type r_type;
9407 unsigned long r_symndx;
9409 struct elf_link_hash_entry *h;
9410 Elf_Internal_Sym *sym;
9412 enum {no_check, check_lo, check_ha} insn_check;
9414 r_type = ELF64_R_TYPE (rel->r_info);
9418 insn_check = no_check;
9421 case R_PPC64_GOT_TLSLD16_HA:
9422 case R_PPC64_GOT_TLSGD16_HA:
9423 case R_PPC64_GOT_TPREL16_HA:
9424 case R_PPC64_GOT_DTPREL16_HA:
9425 case R_PPC64_GOT16_HA:
9426 case R_PPC64_TOC16_HA:
9427 insn_check = check_ha;
9430 case R_PPC64_GOT_TLSLD16_LO:
9431 case R_PPC64_GOT_TLSGD16_LO:
9432 case R_PPC64_GOT_TPREL16_LO_DS:
9433 case R_PPC64_GOT_DTPREL16_LO_DS:
9434 case R_PPC64_GOT16_LO:
9435 case R_PPC64_GOT16_LO_DS:
9436 case R_PPC64_TOC16_LO:
9437 case R_PPC64_TOC16_LO_DS:
9438 insn_check = check_lo;
9442 if (insn_check != no_check)
9444 bfd_vma off = rel->r_offset & ~3;
9445 unsigned char buf[4];
9448 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9453 insn = bfd_get_32 (ibfd, buf);
9454 if (insn_check == check_lo
9455 ? !ok_lo_toc_insn (insn, r_type)
9456 : ((insn & ((0x3f << 26) | 0x1f << 16))
9457 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9461 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9462 sprintf (str, "%#08x", insn);
9463 info->callbacks->einfo
9464 /* xgettext:c-format */
9465 (_("%H: toc optimization is not supported for"
9466 " %s instruction\n"),
9467 ibfd, sec, rel->r_offset & ~3, str);
9474 case R_PPC64_TOC16_LO:
9475 case R_PPC64_TOC16_HI:
9476 case R_PPC64_TOC16_HA:
9477 case R_PPC64_TOC16_DS:
9478 case R_PPC64_TOC16_LO_DS:
9479 /* In case we're taking addresses of toc entries. */
9480 case R_PPC64_ADDR64:
9487 r_symndx = ELF64_R_SYM (rel->r_info);
9488 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9499 val = h->root.u.def.value;
9501 val = sym->st_value;
9502 val += rel->r_addend;
9504 if (val >= toc->size)
9507 if ((skip[val >> 3] & can_optimize) != 0)
9514 case R_PPC64_TOC16_HA:
9517 case R_PPC64_TOC16_LO_DS:
9518 off = rel->r_offset;
9519 off += (bfd_big_endian (ibfd) ? -2 : 3);
9520 if (!bfd_get_section_contents (ibfd, sec, &opc,
9526 if ((opc & (0x3f << 2)) == (58u << 2))
9531 /* Wrong sort of reloc, or not a ld. We may
9532 as well clear ref_from_discarded too. */
9539 /* For the toc section, we only mark as used if this
9540 entry itself isn't unused. */
9541 else if ((used[rel->r_offset >> 3]
9542 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9545 /* Do all the relocs again, to catch reference
9554 if (elf_section_data (sec)->relocs != relstart)
9558 /* Merge the used and skip arrays. Assume that TOC
9559 doublewords not appearing as either used or unused belong
9560 to an entry more than one doubleword in size. */
9561 for (drop = skip, keep = used, last = 0, some_unused = 0;
9562 drop < skip + (toc->size + 7) / 8;
9567 *drop &= ~ref_from_discarded;
9568 if ((*drop & can_optimize) != 0)
9572 else if ((*drop & ref_from_discarded) != 0)
9575 last = ref_from_discarded;
9585 bfd_byte *contents, *src;
9587 Elf_Internal_Sym *sym;
9588 bfd_boolean local_toc_syms = FALSE;
9590 /* Shuffle the toc contents, and at the same time convert the
9591 skip array from booleans into offsets. */
9592 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9595 elf_section_data (toc)->this_hdr.contents = contents;
9597 for (src = contents, off = 0, drop = skip;
9598 src < contents + toc->size;
9601 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9606 memcpy (src - off, src, 8);
9610 toc->rawsize = toc->size;
9611 toc->size = src - contents - off;
9613 /* Adjust addends for relocs against the toc section sym,
9614 and optimize any accesses we can. */
9615 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9617 if (sec->reloc_count == 0
9618 || discarded_section (sec))
9621 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9623 if (relstart == NULL)
9626 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9628 enum elf_ppc64_reloc_type r_type;
9629 unsigned long r_symndx;
9631 struct elf_link_hash_entry *h;
9634 r_type = ELF64_R_TYPE (rel->r_info);
9641 case R_PPC64_TOC16_LO:
9642 case R_PPC64_TOC16_HI:
9643 case R_PPC64_TOC16_HA:
9644 case R_PPC64_TOC16_DS:
9645 case R_PPC64_TOC16_LO_DS:
9646 case R_PPC64_ADDR64:
9650 r_symndx = ELF64_R_SYM (rel->r_info);
9651 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9659 val = h->root.u.def.value;
9662 val = sym->st_value;
9664 local_toc_syms = TRUE;
9667 val += rel->r_addend;
9669 if (val > toc->rawsize)
9671 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9673 else if ((skip[val >> 3] & can_optimize) != 0)
9675 Elf_Internal_Rela *tocrel
9676 = toc_relocs + (skip[val >> 3] >> 2);
9677 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9681 case R_PPC64_TOC16_HA:
9682 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9685 case R_PPC64_TOC16_LO_DS:
9686 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9690 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9692 info->callbacks->einfo
9693 /* xgettext:c-format */
9694 (_("%H: %s references "
9695 "optimized away TOC entry\n"),
9696 ibfd, sec, rel->r_offset,
9697 ppc64_elf_howto_table[r_type]->name);
9698 bfd_set_error (bfd_error_bad_value);
9701 rel->r_addend = tocrel->r_addend;
9702 elf_section_data (sec)->relocs = relstart;
9706 if (h != NULL || sym->st_value != 0)
9709 rel->r_addend -= skip[val >> 3];
9710 elf_section_data (sec)->relocs = relstart;
9713 if (elf_section_data (sec)->relocs != relstart)
9717 /* We shouldn't have local or global symbols defined in the TOC,
9718 but handle them anyway. */
9719 if (local_syms != NULL)
9720 for (sym = local_syms;
9721 sym < local_syms + symtab_hdr->sh_info;
9723 if (sym->st_value != 0
9724 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9728 if (sym->st_value > toc->rawsize)
9729 i = toc->rawsize >> 3;
9731 i = sym->st_value >> 3;
9733 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9737 (_("%s defined on removed toc entry"),
9738 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9741 while ((skip[i] & (ref_from_discarded | can_optimize)));
9742 sym->st_value = (bfd_vma) i << 3;
9745 sym->st_value -= skip[i];
9746 symtab_hdr->contents = (unsigned char *) local_syms;
9749 /* Adjust any global syms defined in this toc input section. */
9750 if (toc_inf.global_toc_syms)
9753 toc_inf.skip = skip;
9754 toc_inf.global_toc_syms = FALSE;
9755 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9759 if (toc->reloc_count != 0)
9761 Elf_Internal_Shdr *rel_hdr;
9762 Elf_Internal_Rela *wrel;
9765 /* Remove unused toc relocs, and adjust those we keep. */
9766 if (toc_relocs == NULL)
9767 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9769 if (toc_relocs == NULL)
9773 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9774 if ((skip[rel->r_offset >> 3]
9775 & (ref_from_discarded | can_optimize)) == 0)
9777 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9778 wrel->r_info = rel->r_info;
9779 wrel->r_addend = rel->r_addend;
9782 else if (!dec_dynrel_count (rel->r_info, toc, info,
9783 &local_syms, NULL, NULL))
9786 elf_section_data (toc)->relocs = toc_relocs;
9787 toc->reloc_count = wrel - toc_relocs;
9788 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9789 sz = rel_hdr->sh_entsize;
9790 rel_hdr->sh_size = toc->reloc_count * sz;
9793 else if (toc_relocs != NULL
9794 && elf_section_data (toc)->relocs != toc_relocs)
9797 if (local_syms != NULL
9798 && symtab_hdr->contents != (unsigned char *) local_syms)
9800 if (!info->keep_memory)
9803 symtab_hdr->contents = (unsigned char *) local_syms;
9811 /* Return true iff input section I references the TOC using
9812 instructions limited to +/-32k offsets. */
9815 ppc64_elf_has_small_toc_reloc (asection *i)
9817 return (is_ppc64_elf (i->owner)
9818 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9821 /* Allocate space for one GOT entry. */
9824 allocate_got (struct elf_link_hash_entry *h,
9825 struct bfd_link_info *info,
9826 struct got_entry *gent)
9828 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9829 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9830 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9832 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9833 ? 2 : 1) * sizeof (Elf64_External_Rela);
9834 asection *got = ppc64_elf_tdata (gent->owner)->got;
9836 gent->got.offset = got->size;
9837 got->size += entsize;
9839 if (h->type == STT_GNU_IFUNC)
9841 htab->elf.irelplt->size += rentsize;
9842 htab->got_reli_size += rentsize;
9844 else if (((bfd_link_pic (info)
9845 && !((gent->tls_type & TLS_TPREL) != 0
9846 && bfd_link_executable (info)
9847 && SYMBOL_REFERENCES_LOCAL (info, h)))
9848 || (htab->elf.dynamic_sections_created
9850 && !SYMBOL_REFERENCES_LOCAL (info, h)))
9851 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9853 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9854 relgot->size += rentsize;
9858 /* This function merges got entries in the same toc group. */
9861 merge_got_entries (struct got_entry **pent)
9863 struct got_entry *ent, *ent2;
9865 for (ent = *pent; ent != NULL; ent = ent->next)
9866 if (!ent->is_indirect)
9867 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9868 if (!ent2->is_indirect
9869 && ent2->addend == ent->addend
9870 && ent2->tls_type == ent->tls_type
9871 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9873 ent2->is_indirect = TRUE;
9874 ent2->got.ent = ent;
9878 /* If H is undefined, make it dynamic if that makes sense. */
9881 ensure_undef_dynamic (struct bfd_link_info *info,
9882 struct elf_link_hash_entry *h)
9884 struct elf_link_hash_table *htab = elf_hash_table (info);
9886 if (htab->dynamic_sections_created
9887 && ((info->dynamic_undefined_weak != 0
9888 && h->root.type == bfd_link_hash_undefweak)
9889 || h->root.type == bfd_link_hash_undefined)
9892 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9893 return bfd_elf_link_record_dynamic_symbol (info, h);
9897 /* Allocate space in .plt, .got and associated reloc sections for
9901 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9903 struct bfd_link_info *info;
9904 struct ppc_link_hash_table *htab;
9906 struct ppc_link_hash_entry *eh;
9907 struct got_entry **pgent, *gent;
9909 if (h->root.type == bfd_link_hash_indirect)
9912 info = (struct bfd_link_info *) inf;
9913 htab = ppc_hash_table (info);
9917 eh = (struct ppc_link_hash_entry *) h;
9918 /* Run through the TLS GD got entries first if we're changing them
9920 if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD))
9921 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9922 if (gent->got.refcount > 0
9923 && (gent->tls_type & TLS_GD) != 0)
9925 /* This was a GD entry that has been converted to TPREL. If
9926 there happens to be a TPREL entry we can use that one. */
9927 struct got_entry *ent;
9928 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9929 if (ent->got.refcount > 0
9930 && (ent->tls_type & TLS_TPREL) != 0
9931 && ent->addend == gent->addend
9932 && ent->owner == gent->owner)
9934 gent->got.refcount = 0;
9938 /* If not, then we'll be using our own TPREL entry. */
9939 if (gent->got.refcount != 0)
9940 gent->tls_type = TLS_TLS | TLS_TPREL;
9943 /* Remove any list entry that won't generate a word in the GOT before
9944 we call merge_got_entries. Otherwise we risk merging to empty
9946 pgent = &h->got.glist;
9947 while ((gent = *pgent) != NULL)
9948 if (gent->got.refcount > 0)
9950 if ((gent->tls_type & TLS_LD) != 0
9953 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9954 *pgent = gent->next;
9957 pgent = &gent->next;
9960 *pgent = gent->next;
9962 if (!htab->do_multi_toc)
9963 merge_got_entries (&h->got.glist);
9965 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9966 if (!gent->is_indirect)
9968 /* Make sure this symbol is output as a dynamic symbol. */
9969 if (!ensure_undef_dynamic (info, h))
9972 if (!is_ppc64_elf (gent->owner))
9975 allocate_got (h, info, gent);
9978 /* If no dynamic sections we can't have dynamic relocs, except for
9979 IFUNCs which are handled even in static executables. */
9980 if (!htab->elf.dynamic_sections_created
9981 && h->type != STT_GNU_IFUNC)
9982 eh->dyn_relocs = NULL;
9984 /* Discard relocs on undefined symbols that must be local. */
9985 else if (h->root.type == bfd_link_hash_undefined
9986 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9987 eh->dyn_relocs = NULL;
9989 /* Also discard relocs on undefined weak syms with non-default
9990 visibility, or when dynamic_undefined_weak says so. */
9991 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9992 eh->dyn_relocs = NULL;
9994 if (eh->dyn_relocs != NULL)
9996 struct elf_dyn_relocs *p, **pp;
9998 /* In the shared -Bsymbolic case, discard space allocated for
9999 dynamic pc-relative relocs against symbols which turn out to
10000 be defined in regular objects. For the normal shared case,
10001 discard space for relocs that have become local due to symbol
10002 visibility changes. */
10004 if (bfd_link_pic (info))
10006 /* Relocs that use pc_count are those that appear on a call
10007 insn, or certain REL relocs (see must_be_dyn_reloc) that
10008 can be generated via assembly. We want calls to
10009 protected symbols to resolve directly to the function
10010 rather than going via the plt. If people want function
10011 pointer comparisons to work as expected then they should
10012 avoid writing weird assembly. */
10013 if (SYMBOL_CALLS_LOCAL (info, h))
10015 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
10017 p->count -= p->pc_count;
10026 if (eh->dyn_relocs != NULL)
10028 /* Make sure this symbol is output as a dynamic symbol. */
10029 if (!ensure_undef_dynamic (info, h))
10033 else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC)
10035 /* For the non-pic case, discard space for relocs against
10036 symbols which turn out to need copy relocs or are not
10038 if (h->dynamic_adjusted
10040 && !ELF_COMMON_DEF_P (h))
10042 /* Make sure this symbol is output as a dynamic symbol. */
10043 if (!ensure_undef_dynamic (info, h))
10046 if (h->dynindx == -1)
10047 eh->dyn_relocs = NULL;
10050 eh->dyn_relocs = NULL;
10053 /* Finally, allocate space. */
10054 for (p = eh->dyn_relocs; p != NULL; p = p->next)
10056 asection *sreloc = elf_section_data (p->sec)->sreloc;
10057 if (eh->elf.type == STT_GNU_IFUNC)
10058 sreloc = htab->elf.irelplt;
10059 sreloc->size += p->count * sizeof (Elf64_External_Rela);
10063 /* We might need a PLT entry when the symbol
10066 c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or
10067 d) has plt16 relocs and we are linking statically. */
10068 if ((htab->elf.dynamic_sections_created && h->dynindx != -1)
10069 || h->type == STT_GNU_IFUNC
10070 || (h->needs_plt && h->dynamic_adjusted)
10073 && !htab->elf.dynamic_sections_created
10074 && !htab->can_convert_all_inline_plt
10075 && (((struct ppc_link_hash_entry *) h)->tls_mask
10076 & (TLS_TLS | PLT_KEEP)) == PLT_KEEP))
10078 struct plt_entry *pent;
10079 bfd_boolean doneone = FALSE;
10080 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
10081 if (pent->plt.refcount > 0)
10083 if (!htab->elf.dynamic_sections_created
10084 || h->dynindx == -1)
10086 if (h->type == STT_GNU_IFUNC)
10088 s = htab->elf.iplt;
10089 pent->plt.offset = s->size;
10090 s->size += PLT_ENTRY_SIZE (htab);
10091 s = htab->elf.irelplt;
10095 s = htab->pltlocal;
10096 pent->plt.offset = s->size;
10097 s->size += LOCAL_PLT_ENTRY_SIZE (htab);
10098 s = bfd_link_pic (info) ? htab->relpltlocal : NULL;
10103 /* If this is the first .plt entry, make room for the special
10105 s = htab->elf.splt;
10107 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
10109 pent->plt.offset = s->size;
10111 /* Make room for this entry. */
10112 s->size += PLT_ENTRY_SIZE (htab);
10114 /* Make room for the .glink code. */
10117 s->size += GLINK_PLTRESOLVE_SIZE (htab);
10120 /* We need bigger stubs past index 32767. */
10121 if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4)
10128 /* We also need to make an entry in the .rela.plt section. */
10129 s = htab->elf.srelplt;
10132 s->size += sizeof (Elf64_External_Rela);
10136 pent->plt.offset = (bfd_vma) -1;
10139 h->plt.plist = NULL;
10145 h->plt.plist = NULL;
10152 #define PPC_LO(v) ((v) & 0xffff)
10153 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10154 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10156 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
10157 to set up space for global entry stubs. These are put in glink,
10158 after the branch table. */
10161 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
10163 struct bfd_link_info *info;
10164 struct ppc_link_hash_table *htab;
10165 struct plt_entry *pent;
10168 if (h->root.type == bfd_link_hash_indirect)
10171 if (!h->pointer_equality_needed)
10174 if (h->def_regular)
10178 htab = ppc_hash_table (info);
10182 s = htab->global_entry;
10183 plt = htab->elf.splt;
10184 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
10185 if (pent->plt.offset != (bfd_vma) -1
10186 && pent->addend == 0)
10188 /* For ELFv2, if this symbol is not defined in a regular file
10189 and we are not generating a shared library or pie, then we
10190 need to define the symbol in the executable on a call stub.
10191 This is to avoid text relocations. */
10192 bfd_vma off, stub_align, stub_off, stub_size;
10193 unsigned int align_power;
10196 stub_off = s->size;
10197 if (htab->params->plt_stub_align >= 0)
10198 align_power = htab->params->plt_stub_align;
10200 align_power = -htab->params->plt_stub_align;
10201 /* Setting section alignment is delayed until we know it is
10202 non-empty. Otherwise the .text output section will be
10203 aligned at least to plt_stub_align even when no global
10204 entry stubs are needed. */
10205 if (s->alignment_power < align_power)
10206 s->alignment_power = align_power;
10207 stub_align = (bfd_vma) 1 << align_power;
10208 if (htab->params->plt_stub_align >= 0
10209 || ((((stub_off + stub_size - 1) & -stub_align)
10210 - (stub_off & -stub_align))
10211 > ((stub_size - 1) & -stub_align)))
10212 stub_off = (stub_off + stub_align - 1) & -stub_align;
10213 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
10214 off -= stub_off + s->output_offset + s->output_section->vma;
10215 /* Note that for --plt-stub-align negative we have a possible
10216 dependency between stub offset and size. Break that
10217 dependency by assuming the max stub size when calculating
10218 the stub offset. */
10219 if (PPC_HA (off) == 0)
10221 h->root.type = bfd_link_hash_defined;
10222 h->root.u.def.section = s;
10223 h->root.u.def.value = stub_off;
10224 s->size = stub_off + stub_size;
10230 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10231 read-only sections. */
10234 maybe_set_textrel (struct elf_link_hash_entry *h, void *inf)
10238 if (h->root.type == bfd_link_hash_indirect)
10241 sec = readonly_dynrelocs (h);
10244 struct bfd_link_info *info = (struct bfd_link_info *) inf;
10246 info->flags |= DF_TEXTREL;
10247 info->callbacks->minfo
10248 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
10249 sec->owner, h->root.root.string, sec);
10251 /* Not an error, just cut short the traversal. */
10257 /* Set the sizes of the dynamic sections. */
10260 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
10261 struct bfd_link_info *info)
10263 struct ppc_link_hash_table *htab;
10266 bfd_boolean relocs;
10268 struct got_entry *first_tlsld;
10270 htab = ppc_hash_table (info);
10274 dynobj = htab->elf.dynobj;
10275 if (dynobj == NULL)
10278 if (htab->elf.dynamic_sections_created)
10280 /* Set the contents of the .interp section to the interpreter. */
10281 if (bfd_link_executable (info) && !info->nointerp)
10283 s = bfd_get_linker_section (dynobj, ".interp");
10286 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
10287 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10291 /* Set up .got offsets for local syms, and space for local dynamic
10293 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10295 struct got_entry **lgot_ents;
10296 struct got_entry **end_lgot_ents;
10297 struct plt_entry **local_plt;
10298 struct plt_entry **end_local_plt;
10299 unsigned char *lgot_masks;
10300 bfd_size_type locsymcount;
10301 Elf_Internal_Shdr *symtab_hdr;
10303 if (!is_ppc64_elf (ibfd))
10306 for (s = ibfd->sections; s != NULL; s = s->next)
10308 struct ppc_dyn_relocs *p;
10310 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10312 if (!bfd_is_abs_section (p->sec)
10313 && bfd_is_abs_section (p->sec->output_section))
10315 /* Input section has been discarded, either because
10316 it is a copy of a linkonce section or due to
10317 linker script /DISCARD/, so we'll be discarding
10320 else if (p->count != 0)
10322 asection *srel = elf_section_data (p->sec)->sreloc;
10324 srel = htab->elf.irelplt;
10325 srel->size += p->count * sizeof (Elf64_External_Rela);
10326 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
10327 info->flags |= DF_TEXTREL;
10332 lgot_ents = elf_local_got_ents (ibfd);
10336 symtab_hdr = &elf_symtab_hdr (ibfd);
10337 locsymcount = symtab_hdr->sh_info;
10338 end_lgot_ents = lgot_ents + locsymcount;
10339 local_plt = (struct plt_entry **) end_lgot_ents;
10340 end_local_plt = local_plt + locsymcount;
10341 lgot_masks = (unsigned char *) end_local_plt;
10342 s = ppc64_elf_tdata (ibfd)->got;
10343 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10345 struct got_entry **pent, *ent;
10348 while ((ent = *pent) != NULL)
10349 if (ent->got.refcount > 0)
10351 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
10353 ppc64_tlsld_got (ibfd)->got.refcount += 1;
10358 unsigned int ent_size = 8;
10359 unsigned int rel_size = sizeof (Elf64_External_Rela);
10361 ent->got.offset = s->size;
10362 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10367 s->size += ent_size;
10368 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
10370 htab->elf.irelplt->size += rel_size;
10371 htab->got_reli_size += rel_size;
10373 else if (bfd_link_pic (info)
10374 && !((ent->tls_type & TLS_TPREL) != 0
10375 && bfd_link_executable (info)))
10377 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10378 srel->size += rel_size;
10387 /* Allocate space for plt calls to local syms. */
10388 lgot_masks = (unsigned char *) end_local_plt;
10389 for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks)
10391 struct plt_entry *ent;
10393 for (ent = *local_plt; ent != NULL; ent = ent->next)
10394 if (ent->plt.refcount > 0)
10396 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
10398 s = htab->elf.iplt;
10399 ent->plt.offset = s->size;
10400 s->size += PLT_ENTRY_SIZE (htab);
10401 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10403 else if (htab->can_convert_all_inline_plt
10404 || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)
10405 ent->plt.offset = (bfd_vma) -1;
10408 s = htab->pltlocal;
10409 ent->plt.offset = s->size;
10410 s->size += LOCAL_PLT_ENTRY_SIZE (htab);
10411 if (bfd_link_pic (info))
10412 htab->relpltlocal->size += sizeof (Elf64_External_Rela);
10416 ent->plt.offset = (bfd_vma) -1;
10420 /* Allocate global sym .plt and .got entries, and space for global
10421 sym dynamic relocs. */
10422 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10424 if (!htab->opd_abi && !bfd_link_pic (info))
10425 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10427 first_tlsld = NULL;
10428 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10430 struct got_entry *ent;
10432 if (!is_ppc64_elf (ibfd))
10435 ent = ppc64_tlsld_got (ibfd);
10436 if (ent->got.refcount > 0)
10438 if (!htab->do_multi_toc && first_tlsld != NULL)
10440 ent->is_indirect = TRUE;
10441 ent->got.ent = first_tlsld;
10445 if (first_tlsld == NULL)
10447 s = ppc64_elf_tdata (ibfd)->got;
10448 ent->got.offset = s->size;
10451 if (bfd_link_pic (info))
10453 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10454 srel->size += sizeof (Elf64_External_Rela);
10459 ent->got.offset = (bfd_vma) -1;
10462 /* We now have determined the sizes of the various dynamic sections.
10463 Allocate memory for them. */
10465 for (s = dynobj->sections; s != NULL; s = s->next)
10467 if ((s->flags & SEC_LINKER_CREATED) == 0)
10470 if (s == htab->brlt || s == htab->relbrlt)
10471 /* These haven't been allocated yet; don't strip. */
10473 else if (s == htab->elf.sgot
10474 || s == htab->elf.splt
10475 || s == htab->elf.iplt
10476 || s == htab->pltlocal
10477 || s == htab->glink
10478 || s == htab->global_entry
10479 || s == htab->elf.sdynbss
10480 || s == htab->elf.sdynrelro)
10482 /* Strip this section if we don't need it; see the
10485 else if (s == htab->glink_eh_frame)
10487 if (!bfd_is_abs_section (s->output_section))
10488 /* Not sized yet. */
10491 else if (CONST_STRNEQ (s->name, ".rela"))
10495 if (s != htab->elf.srelplt)
10498 /* We use the reloc_count field as a counter if we need
10499 to copy relocs into the output file. */
10500 s->reloc_count = 0;
10505 /* It's not one of our sections, so don't allocate space. */
10511 /* If we don't need this section, strip it from the
10512 output file. This is mostly to handle .rela.bss and
10513 .rela.plt. We must create both sections in
10514 create_dynamic_sections, because they must be created
10515 before the linker maps input sections to output
10516 sections. The linker does that before
10517 adjust_dynamic_symbol is called, and it is that
10518 function which decides whether anything needs to go
10519 into these sections. */
10520 s->flags |= SEC_EXCLUDE;
10524 if (bfd_is_abs_section (s->output_section))
10525 _bfd_error_handler (_("warning: discarding dynamic section %s"),
10528 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10531 /* Allocate memory for the section contents. We use bfd_zalloc
10532 here in case unused entries are not reclaimed before the
10533 section's contents are written out. This should not happen,
10534 but this way if it does we get a R_PPC64_NONE reloc in .rela
10535 sections instead of garbage.
10536 We also rely on the section contents being zero when writing
10537 the GOT and .dynrelro. */
10538 s->contents = bfd_zalloc (dynobj, s->size);
10539 if (s->contents == NULL)
10543 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10545 if (!is_ppc64_elf (ibfd))
10548 s = ppc64_elf_tdata (ibfd)->got;
10549 if (s != NULL && s != htab->elf.sgot)
10552 s->flags |= SEC_EXCLUDE;
10555 s->contents = bfd_zalloc (ibfd, s->size);
10556 if (s->contents == NULL)
10560 s = ppc64_elf_tdata (ibfd)->relgot;
10564 s->flags |= SEC_EXCLUDE;
10567 s->contents = bfd_zalloc (ibfd, s->size);
10568 if (s->contents == NULL)
10571 s->reloc_count = 0;
10576 if (htab->elf.dynamic_sections_created)
10578 bfd_boolean tls_opt;
10580 /* Add some entries to the .dynamic section. We fill in the
10581 values later, in ppc64_elf_finish_dynamic_sections, but we
10582 must add the entries now so that we get the correct size for
10583 the .dynamic section. The DT_DEBUG entry is filled in by the
10584 dynamic linker and used by the debugger. */
10585 #define add_dynamic_entry(TAG, VAL) \
10586 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10588 if (bfd_link_executable (info))
10590 if (!add_dynamic_entry (DT_DEBUG, 0))
10594 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10596 if (!add_dynamic_entry (DT_PLTGOT, 0)
10597 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10598 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10599 || !add_dynamic_entry (DT_JMPREL, 0)
10600 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10604 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10606 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10607 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10611 tls_opt = (htab->params->tls_get_addr_opt
10612 && htab->tls_get_addr_fd != NULL
10613 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10614 if (tls_opt || !htab->opd_abi)
10616 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10622 if (!add_dynamic_entry (DT_RELA, 0)
10623 || !add_dynamic_entry (DT_RELASZ, 0)
10624 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10627 /* If any dynamic relocs apply to a read-only section,
10628 then we need a DT_TEXTREL entry. */
10629 if ((info->flags & DF_TEXTREL) == 0)
10630 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10632 if ((info->flags & DF_TEXTREL) != 0)
10634 if (!add_dynamic_entry (DT_TEXTREL, 0))
10639 #undef add_dynamic_entry
10644 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10647 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10649 if (h->plt.plist != NULL
10651 && !h->pointer_equality_needed)
10654 return _bfd_elf_hash_symbol (h);
10657 /* Determine the type of stub needed, if any, for a call. */
10659 static inline enum ppc_stub_type
10660 ppc_type_of_stub (asection *input_sec,
10661 const Elf_Internal_Rela *rel,
10662 struct ppc_link_hash_entry **hash,
10663 struct plt_entry **plt_ent,
10664 bfd_vma destination,
10665 unsigned long local_off)
10667 struct ppc_link_hash_entry *h = *hash;
10669 bfd_vma branch_offset;
10670 bfd_vma max_branch_offset;
10671 enum elf_ppc64_reloc_type r_type;
10675 struct plt_entry *ent;
10676 struct ppc_link_hash_entry *fdh = h;
10678 && h->oh->is_func_descriptor)
10680 fdh = ppc_follow_link (h->oh);
10684 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10685 if (ent->addend == rel->r_addend
10686 && ent->plt.offset != (bfd_vma) -1)
10689 return ppc_stub_plt_call;
10692 /* Here, we know we don't have a plt entry. If we don't have a
10693 either a defined function descriptor or a defined entry symbol
10694 in a regular object file, then it is pointless trying to make
10695 any other type of stub. */
10696 if (!is_static_defined (&fdh->elf)
10697 && !is_static_defined (&h->elf))
10698 return ppc_stub_none;
10700 else if (elf_local_got_ents (input_sec->owner) != NULL)
10702 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10703 struct plt_entry **local_plt = (struct plt_entry **)
10704 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10705 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10707 if (local_plt[r_symndx] != NULL)
10709 struct plt_entry *ent;
10711 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10712 if (ent->addend == rel->r_addend
10713 && ent->plt.offset != (bfd_vma) -1)
10716 return ppc_stub_plt_call;
10721 /* Determine where the call point is. */
10722 location = (input_sec->output_offset
10723 + input_sec->output_section->vma
10726 branch_offset = destination - location;
10727 r_type = ELF64_R_TYPE (rel->r_info);
10729 /* Determine if a long branch stub is needed. */
10730 max_branch_offset = 1 << 25;
10731 if (r_type == R_PPC64_REL14
10732 || r_type == R_PPC64_REL14_BRTAKEN
10733 || r_type == R_PPC64_REL14_BRNTAKEN)
10734 max_branch_offset = 1 << 15;
10736 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10737 /* We need a stub. Figure out whether a long_branch or plt_branch
10738 is needed later. */
10739 return ppc_stub_long_branch;
10741 return ppc_stub_none;
10744 /* With power7 weakly ordered memory model, it is possible for ld.so
10745 to update a plt entry in one thread and have another thread see a
10746 stale zero toc entry. To avoid this we need some sort of acquire
10747 barrier in the call stub. One solution is to make the load of the
10748 toc word seem to appear to depend on the load of the function entry
10749 word. Another solution is to test for r2 being zero, and branch to
10750 the appropriate glink entry if so.
10752 . fake dep barrier compare
10753 . ld 12,xxx(2) ld 12,xxx(2)
10754 . mtctr 12 mtctr 12
10755 . xor 11,12,12 ld 2,xxx+8(2)
10756 . add 2,2,11 cmpldi 2,0
10757 . ld 2,xxx+8(2) bnectr+
10758 . bctr b <glink_entry>
10760 The solution involving the compare turns out to be faster, so
10761 that's what we use unless the branch won't reach. */
10763 #define ALWAYS_USE_FAKE_DEP 0
10764 #define ALWAYS_EMIT_R2SAVE 0
10766 static inline unsigned int
10767 plt_stub_size (struct ppc_link_hash_table *htab,
10768 struct ppc_stub_hash_entry *stub_entry,
10771 unsigned size = 12;
10773 if (ALWAYS_EMIT_R2SAVE
10774 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10776 if (PPC_HA (off) != 0)
10781 if (htab->params->plt_static_chain)
10783 if (htab->params->plt_thread_safe
10784 && htab->elf.dynamic_sections_created
10785 && stub_entry->h != NULL
10786 && stub_entry->h->elf.dynindx != -1)
10788 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10791 if (stub_entry->h != NULL
10792 && (stub_entry->h == htab->tls_get_addr_fd
10793 || stub_entry->h == htab->tls_get_addr)
10794 && htab->params->tls_get_addr_opt)
10797 if (ALWAYS_EMIT_R2SAVE
10798 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10804 /* Depending on the sign of plt_stub_align:
10805 If positive, return the padding to align to a 2**plt_stub_align
10807 If negative, if this stub would cross fewer 2**plt_stub_align
10808 boundaries if we align, then return the padding needed to do so. */
10810 static inline unsigned int
10811 plt_stub_pad (struct ppc_link_hash_table *htab,
10812 struct ppc_stub_hash_entry *stub_entry,
10816 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10817 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10819 if (htab->params->plt_stub_align >= 0)
10821 stub_align = 1 << htab->params->plt_stub_align;
10822 if ((stub_off & (stub_align - 1)) != 0)
10823 return stub_align - (stub_off & (stub_align - 1));
10827 stub_align = 1 << -htab->params->plt_stub_align;
10828 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10829 > ((stub_size - 1) & -stub_align))
10830 return stub_align - (stub_off & (stub_align - 1));
10834 /* Build a .plt call stub. */
10836 static inline bfd_byte *
10837 build_plt_stub (struct ppc_link_hash_table *htab,
10838 struct ppc_stub_hash_entry *stub_entry,
10839 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10841 bfd *obfd = htab->params->stub_bfd;
10842 bfd_boolean plt_load_toc = htab->opd_abi;
10843 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10844 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10845 && htab->elf.dynamic_sections_created
10846 && stub_entry->h != NULL
10847 && stub_entry->h->elf.dynindx != -1);
10848 bfd_boolean use_fake_dep = plt_thread_safe;
10849 bfd_vma cmp_branch_off = 0;
10851 if (!ALWAYS_USE_FAKE_DEP
10854 && !((stub_entry->h == htab->tls_get_addr_fd
10855 || stub_entry->h == htab->tls_get_addr)
10856 && htab->params->tls_get_addr_opt))
10858 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10859 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10860 / PLT_ENTRY_SIZE (htab));
10861 bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8;
10864 if (pltindex > 32768)
10865 glinkoff += (pltindex - 32768) * 4;
10867 + htab->glink->output_offset
10868 + htab->glink->output_section->vma);
10869 from = (p - stub_entry->group->stub_sec->contents
10870 + 4 * (ALWAYS_EMIT_R2SAVE
10871 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10872 + 4 * (PPC_HA (offset) != 0)
10873 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10874 != PPC_HA (offset))
10875 + 4 * (plt_static_chain != 0)
10877 + stub_entry->group->stub_sec->output_offset
10878 + stub_entry->group->stub_sec->output_section->vma);
10879 cmp_branch_off = to - from;
10880 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10883 if (PPC_HA (offset) != 0)
10887 if (ALWAYS_EMIT_R2SAVE
10888 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10889 r[0].r_offset += 4;
10890 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10891 r[1].r_offset = r[0].r_offset + 4;
10892 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10893 r[1].r_addend = r[0].r_addend;
10896 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10898 r[2].r_offset = r[1].r_offset + 4;
10899 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10900 r[2].r_addend = r[0].r_addend;
10904 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10905 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10906 r[2].r_addend = r[0].r_addend + 8;
10907 if (plt_static_chain)
10909 r[3].r_offset = r[2].r_offset + 4;
10910 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10911 r[3].r_addend = r[0].r_addend + 16;
10916 if (ALWAYS_EMIT_R2SAVE
10917 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10918 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10921 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10922 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10926 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10927 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10930 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10932 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10935 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10940 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10941 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10943 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10944 if (plt_static_chain)
10945 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10952 if (ALWAYS_EMIT_R2SAVE
10953 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10954 r[0].r_offset += 4;
10955 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10958 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10960 r[1].r_offset = r[0].r_offset + 4;
10961 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10962 r[1].r_addend = r[0].r_addend;
10966 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10967 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10968 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10969 if (plt_static_chain)
10971 r[2].r_offset = r[1].r_offset + 4;
10972 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10973 r[2].r_addend = r[0].r_addend + 8;
10978 if (ALWAYS_EMIT_R2SAVE
10979 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10980 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10981 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10983 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10985 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10988 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10993 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10994 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10996 if (plt_static_chain)
10997 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10998 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
11001 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
11003 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
11004 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
11005 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
11008 bfd_put_32 (obfd, BCTR, p), p += 4;
11012 /* Build a special .plt call stub for __tls_get_addr. */
11014 #define LD_R11_0R3 0xe9630000
11015 #define LD_R12_0R3 0xe9830000
11016 #define MR_R0_R3 0x7c601b78
11017 #define CMPDI_R11_0 0x2c2b0000
11018 #define ADD_R3_R12_R13 0x7c6c6a14
11019 #define BEQLR 0x4d820020
11020 #define MR_R3_R0 0x7c030378
11021 #define STD_R11_0R1 0xf9610000
11022 #define BCTRL 0x4e800421
11023 #define LD_R11_0R1 0xe9610000
11024 #define MTLR_R11 0x7d6803a6
11026 static inline bfd_byte *
11027 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
11028 struct ppc_stub_hash_entry *stub_entry,
11029 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
11031 bfd *obfd = htab->params->stub_bfd;
11033 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
11034 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
11035 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
11036 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
11037 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
11038 bfd_put_32 (obfd, BEQLR, p), p += 4;
11039 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
11041 r[0].r_offset += 7 * 4;
11042 if (!ALWAYS_EMIT_R2SAVE
11043 && stub_entry->stub_type != ppc_stub_plt_call_r2save)
11044 return build_plt_stub (htab, stub_entry, p, offset, r);
11046 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
11047 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
11050 r[0].r_offset += 2 * 4;
11051 p = build_plt_stub (htab, stub_entry, p, offset, r);
11052 bfd_put_32 (obfd, BCTRL, p - 4);
11054 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
11055 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
11056 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
11057 bfd_put_32 (obfd, BLR, p), p += 4;
11062 static Elf_Internal_Rela *
11063 get_relocs (asection *sec, int count)
11065 Elf_Internal_Rela *relocs;
11066 struct bfd_elf_section_data *elfsec_data;
11068 elfsec_data = elf_section_data (sec);
11069 relocs = elfsec_data->relocs;
11070 if (relocs == NULL)
11072 bfd_size_type relsize;
11073 relsize = sec->reloc_count * sizeof (*relocs);
11074 relocs = bfd_alloc (sec->owner, relsize);
11075 if (relocs == NULL)
11077 elfsec_data->relocs = relocs;
11078 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
11079 sizeof (Elf_Internal_Shdr));
11080 if (elfsec_data->rela.hdr == NULL)
11082 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
11083 * sizeof (Elf64_External_Rela));
11084 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
11085 sec->reloc_count = 0;
11087 relocs += sec->reloc_count;
11088 sec->reloc_count += count;
11093 get_r2off (struct bfd_link_info *info,
11094 struct ppc_stub_hash_entry *stub_entry)
11096 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11097 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
11101 /* Support linking -R objects. Get the toc pointer from the
11104 if (!htab->opd_abi)
11106 asection *opd = stub_entry->h->elf.root.u.def.section;
11107 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
11109 if (strcmp (opd->name, ".opd") != 0
11110 || opd->reloc_count != 0)
11112 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%pT'\n"),
11113 stub_entry->h->elf.root.root.string);
11114 bfd_set_error (bfd_error_bad_value);
11115 return (bfd_vma) -1;
11117 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
11118 return (bfd_vma) -1;
11119 r2off = bfd_get_64 (opd->owner, buf);
11120 r2off -= elf_gp (info->output_bfd);
11122 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
11127 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11129 struct ppc_stub_hash_entry *stub_entry;
11130 struct ppc_branch_hash_entry *br_entry;
11131 struct bfd_link_info *info;
11132 struct ppc_link_hash_table *htab;
11136 Elf_Internal_Rela *r;
11139 /* Massage our args to the form they really have. */
11140 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11143 htab = ppc_hash_table (info);
11147 /* Make a note of the offset within the stubs for this entry. */
11148 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11149 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
11151 htab->stub_count[stub_entry->stub_type - 1] += 1;
11152 switch (stub_entry->stub_type)
11154 case ppc_stub_long_branch:
11155 case ppc_stub_long_branch_r2off:
11156 /* Branches are relative. This is where we are going to. */
11157 dest = (stub_entry->target_value
11158 + stub_entry->target_section->output_offset
11159 + stub_entry->target_section->output_section->vma);
11160 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11163 /* And this is where we are coming from. */
11164 off -= (stub_entry->stub_offset
11165 + stub_entry->group->stub_sec->output_offset
11166 + stub_entry->group->stub_sec->output_section->vma);
11169 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11171 bfd_vma r2off = get_r2off (info, stub_entry);
11173 if (r2off == (bfd_vma) -1)
11175 htab->stub_error = TRUE;
11178 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p);
11180 if (PPC_HA (r2off) != 0)
11182 bfd_put_32 (htab->params->stub_bfd,
11183 ADDIS_R2_R2 | PPC_HA (r2off), p);
11186 if (PPC_LO (r2off) != 0)
11188 bfd_put_32 (htab->params->stub_bfd,
11189 ADDI_R2_R2 | PPC_LO (r2off), p);
11194 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p);
11197 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
11200 (_("long branch stub `%s' offset overflow"),
11201 stub_entry->root.string);
11202 htab->stub_error = TRUE;
11206 if (info->emitrelocations)
11208 r = get_relocs (stub_entry->group->stub_sec, 1);
11211 r->r_offset = p - 4 - stub_entry->group->stub_sec->contents;
11212 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
11213 r->r_addend = dest;
11214 if (stub_entry->h != NULL)
11216 struct elf_link_hash_entry **hashes;
11217 unsigned long symndx;
11218 struct ppc_link_hash_entry *h;
11220 hashes = elf_sym_hashes (htab->params->stub_bfd);
11221 if (hashes == NULL)
11223 bfd_size_type hsize;
11225 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
11226 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
11227 if (hashes == NULL)
11229 elf_sym_hashes (htab->params->stub_bfd) = hashes;
11230 htab->stub_globals = 1;
11232 symndx = htab->stub_globals++;
11234 hashes[symndx] = &h->elf;
11235 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
11236 if (h->oh != NULL && h->oh->is_func)
11237 h = ppc_follow_link (h->oh);
11238 if (h->elf.root.u.def.section != stub_entry->target_section)
11239 /* H is an opd symbol. The addend must be zero. */
11243 off = (h->elf.root.u.def.value
11244 + h->elf.root.u.def.section->output_offset
11245 + h->elf.root.u.def.section->output_section->vma);
11246 r->r_addend -= off;
11252 case ppc_stub_plt_branch:
11253 case ppc_stub_plt_branch_r2off:
11254 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11255 stub_entry->root.string + 9,
11257 if (br_entry == NULL)
11259 _bfd_error_handler (_("can't find branch stub `%s'"),
11260 stub_entry->root.string);
11261 htab->stub_error = TRUE;
11265 dest = (stub_entry->target_value
11266 + stub_entry->target_section->output_offset
11267 + stub_entry->target_section->output_section->vma);
11268 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11269 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11271 bfd_put_64 (htab->brlt->owner, dest,
11272 htab->brlt->contents + br_entry->offset);
11274 if (br_entry->iter == htab->stub_iteration)
11276 br_entry->iter = 0;
11278 if (htab->relbrlt != NULL)
11280 /* Create a reloc for the branch lookup table entry. */
11281 Elf_Internal_Rela rela;
11284 rela.r_offset = (br_entry->offset
11285 + htab->brlt->output_offset
11286 + htab->brlt->output_section->vma);
11287 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11288 rela.r_addend = dest;
11290 rl = htab->relbrlt->contents;
11291 rl += (htab->relbrlt->reloc_count++
11292 * sizeof (Elf64_External_Rela));
11293 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
11295 else if (info->emitrelocations)
11297 r = get_relocs (htab->brlt, 1);
11300 /* brlt, being SEC_LINKER_CREATED does not go through the
11301 normal reloc processing. Symbols and offsets are not
11302 translated from input file to output file form, so
11303 set up the offset per the output file. */
11304 r->r_offset = (br_entry->offset
11305 + htab->brlt->output_offset
11306 + htab->brlt->output_section->vma);
11307 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11308 r->r_addend = dest;
11312 dest = (br_entry->offset
11313 + htab->brlt->output_offset
11314 + htab->brlt->output_section->vma);
11317 - elf_gp (info->output_bfd)
11318 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11320 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11322 info->callbacks->einfo
11323 (_("%P: linkage table error against `%pT'\n"),
11324 stub_entry->root.string);
11325 bfd_set_error (bfd_error_bad_value);
11326 htab->stub_error = TRUE;
11330 if (info->emitrelocations)
11332 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
11335 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11336 if (bfd_big_endian (info->output_bfd))
11337 r[0].r_offset += 2;
11338 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
11339 r[0].r_offset += 4;
11340 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
11341 r[0].r_addend = dest;
11342 if (PPC_HA (off) != 0)
11344 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
11345 r[1].r_offset = r[0].r_offset + 4;
11346 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
11347 r[1].r_addend = r[0].r_addend;
11352 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11354 if (PPC_HA (off) != 0)
11356 bfd_put_32 (htab->params->stub_bfd,
11357 ADDIS_R12_R2 | PPC_HA (off), p);
11359 bfd_put_32 (htab->params->stub_bfd,
11360 LD_R12_0R12 | PPC_LO (off), p);
11363 bfd_put_32 (htab->params->stub_bfd,
11364 LD_R12_0R2 | PPC_LO (off), p);
11368 bfd_vma r2off = get_r2off (info, stub_entry);
11370 if (r2off == (bfd_vma) -1)
11372 htab->stub_error = TRUE;
11376 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p);
11378 if (PPC_HA (off) != 0)
11380 bfd_put_32 (htab->params->stub_bfd,
11381 ADDIS_R12_R2 | PPC_HA (off), p);
11383 bfd_put_32 (htab->params->stub_bfd,
11384 LD_R12_0R12 | PPC_LO (off), p);
11387 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p);
11389 if (PPC_HA (r2off) != 0)
11392 bfd_put_32 (htab->params->stub_bfd,
11393 ADDIS_R2_R2 | PPC_HA (r2off), p);
11395 if (PPC_LO (r2off) != 0)
11398 bfd_put_32 (htab->params->stub_bfd,
11399 ADDI_R2_R2 | PPC_LO (r2off), p);
11403 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p);
11405 bfd_put_32 (htab->params->stub_bfd, BCTR, p);
11409 case ppc_stub_plt_call:
11410 case ppc_stub_plt_call_r2save:
11411 if (stub_entry->h != NULL
11412 && stub_entry->h->is_func_descriptor
11413 && stub_entry->h->oh != NULL)
11415 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11417 /* If the old-ABI "dot-symbol" is undefined make it weak so
11418 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11419 if (fh->elf.root.type == bfd_link_hash_undefined
11420 && (stub_entry->h->elf.root.type == bfd_link_hash_defined
11421 || stub_entry->h->elf.root.type == bfd_link_hash_defweak))
11422 fh->elf.root.type = bfd_link_hash_undefweak;
11425 /* Now build the stub. */
11426 dest = stub_entry->plt_ent->plt.offset & ~1;
11427 if (dest >= (bfd_vma) -2)
11430 plt = htab->elf.splt;
11431 if (!htab->elf.dynamic_sections_created
11432 || stub_entry->h == NULL
11433 || stub_entry->h->elf.dynindx == -1)
11435 if (stub_entry->symtype == STT_GNU_IFUNC)
11436 plt = htab->elf.iplt;
11438 plt = htab->pltlocal;
11441 dest += plt->output_offset + plt->output_section->vma;
11444 - elf_gp (info->output_bfd)
11445 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11447 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11449 info->callbacks->einfo
11450 /* xgettext:c-format */
11451 (_("%P: linkage table error against `%pT'\n"),
11452 stub_entry->h != NULL
11453 ? stub_entry->h->elf.root.root.string
11455 bfd_set_error (bfd_error_bad_value);
11456 htab->stub_error = TRUE;
11460 if (htab->params->plt_stub_align != 0)
11462 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11464 stub_entry->group->stub_sec->size += pad;
11465 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11470 if (info->emitrelocations)
11472 r = get_relocs (stub_entry->group->stub_sec,
11473 ((PPC_HA (off) != 0)
11475 ? 2 + (htab->params->plt_static_chain
11476 && PPC_HA (off + 16) == PPC_HA (off))
11480 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11481 if (bfd_big_endian (info->output_bfd))
11482 r[0].r_offset += 2;
11483 r[0].r_addend = dest;
11485 if (stub_entry->h != NULL
11486 && (stub_entry->h == htab->tls_get_addr_fd
11487 || stub_entry->h == htab->tls_get_addr)
11488 && htab->params->tls_get_addr_opt)
11489 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11491 p = build_plt_stub (htab, stub_entry, loc, off, r);
11494 case ppc_stub_save_res:
11502 stub_entry->group->stub_sec->size += p - loc;
11504 if (htab->params->emit_stub_syms)
11506 struct elf_link_hash_entry *h;
11509 const char *const stub_str[] = { "long_branch",
11510 "long_branch_r2off",
11512 "plt_branch_r2off",
11516 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11517 len2 = strlen (stub_entry->root.string);
11518 name = bfd_malloc (len1 + len2 + 2);
11521 memcpy (name, stub_entry->root.string, 9);
11522 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11523 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11524 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11527 if (h->root.type == bfd_link_hash_new)
11529 h->root.type = bfd_link_hash_defined;
11530 h->root.u.def.section = stub_entry->group->stub_sec;
11531 h->root.u.def.value = stub_entry->stub_offset;
11532 h->ref_regular = 1;
11533 h->def_regular = 1;
11534 h->ref_regular_nonweak = 1;
11535 h->forced_local = 1;
11537 h->root.linker_def = 1;
11544 /* As above, but don't actually build the stub. Just bump offset so
11545 we know stub section sizes, and select plt_branch stubs where
11546 long_branch stubs won't do. */
11549 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11551 struct ppc_stub_hash_entry *stub_entry;
11552 struct bfd_link_info *info;
11553 struct ppc_link_hash_table *htab;
11557 /* Massage our args to the form they really have. */
11558 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11561 htab = ppc_hash_table (info);
11565 if (stub_entry->h != NULL
11566 && stub_entry->h->save_res
11567 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11568 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11570 /* Don't make stubs to out-of-line register save/restore
11571 functions. Instead, emit copies of the functions. */
11572 stub_entry->group->needs_save_res = 1;
11573 stub_entry->stub_type = ppc_stub_save_res;
11577 if (stub_entry->stub_type == ppc_stub_plt_call
11578 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11581 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11582 if (off >= (bfd_vma) -2)
11584 plt = htab->elf.splt;
11585 if (!htab->elf.dynamic_sections_created
11586 || stub_entry->h == NULL
11587 || stub_entry->h->elf.dynindx == -1)
11589 if (stub_entry->symtype == STT_GNU_IFUNC)
11590 plt = htab->elf.iplt;
11592 plt = htab->pltlocal;
11594 off += (plt->output_offset
11595 + plt->output_section->vma
11596 - elf_gp (info->output_bfd)
11597 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11599 size = plt_stub_size (htab, stub_entry, off);
11600 if (stub_entry->h != NULL
11601 && (stub_entry->h == htab->tls_get_addr_fd
11602 || stub_entry->h == htab->tls_get_addr)
11603 && htab->params->tls_get_addr_opt
11604 && (ALWAYS_EMIT_R2SAVE
11605 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
11606 stub_entry->group->tls_get_addr_opt_bctrl
11607 = stub_entry->group->stub_sec->size + size - 5 * 4;
11609 if (htab->params->plt_stub_align)
11610 size += plt_stub_pad (htab, stub_entry, off);
11611 if (info->emitrelocations)
11613 stub_entry->group->stub_sec->reloc_count
11614 += ((PPC_HA (off) != 0)
11616 ? 2 + (htab->params->plt_static_chain
11617 && PPC_HA (off + 16) == PPC_HA (off))
11619 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11624 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11627 bfd_vma local_off = 0;
11629 off = (stub_entry->target_value
11630 + stub_entry->target_section->output_offset
11631 + stub_entry->target_section->output_section->vma);
11632 off -= (stub_entry->group->stub_sec->size
11633 + stub_entry->group->stub_sec->output_offset
11634 + stub_entry->group->stub_sec->output_section->vma);
11636 /* Reset the stub type from the plt variant in case we now
11637 can reach with a shorter stub. */
11638 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11639 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11642 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11644 r2off = get_r2off (info, stub_entry);
11645 if (r2off == (bfd_vma) -1)
11647 htab->stub_error = TRUE;
11651 if (PPC_HA (r2off) != 0)
11653 if (PPC_LO (r2off) != 0)
11658 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11660 /* If the branch offset is too big, use a ppc_stub_plt_branch.
11661 Do the same for -R objects without function descriptors. */
11662 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11663 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11665 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11667 struct ppc_branch_hash_entry *br_entry;
11669 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11670 stub_entry->root.string + 9,
11672 if (br_entry == NULL)
11674 _bfd_error_handler (_("can't build branch stub `%s'"),
11675 stub_entry->root.string);
11676 htab->stub_error = TRUE;
11680 if (br_entry->iter != htab->stub_iteration)
11682 br_entry->iter = htab->stub_iteration;
11683 br_entry->offset = htab->brlt->size;
11684 htab->brlt->size += 8;
11686 if (htab->relbrlt != NULL)
11687 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11688 else if (info->emitrelocations)
11690 htab->brlt->reloc_count += 1;
11691 htab->brlt->flags |= SEC_RELOC;
11695 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11696 off = (br_entry->offset
11697 + htab->brlt->output_offset
11698 + htab->brlt->output_section->vma
11699 - elf_gp (info->output_bfd)
11700 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11702 if (info->emitrelocations)
11704 stub_entry->group->stub_sec->reloc_count
11705 += 1 + (PPC_HA (off) != 0);
11706 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11709 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11712 if (PPC_HA (off) != 0)
11718 if (PPC_HA (off) != 0)
11721 if (PPC_HA (r2off) != 0)
11723 if (PPC_LO (r2off) != 0)
11727 else if (info->emitrelocations)
11729 stub_entry->group->stub_sec->reloc_count += 1;
11730 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11734 stub_entry->group->stub_sec->size += size;
11738 /* Set up various things so that we can make a list of input sections
11739 for each output section included in the link. Returns -1 on error,
11740 0 when no stubs will be needed, and 1 on success. */
11743 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11747 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11752 htab->sec_info_arr_size = bfd_get_next_section_id ();
11753 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11754 htab->sec_info = bfd_zmalloc (amt);
11755 if (htab->sec_info == NULL)
11758 /* Set toc_off for com, und, abs and ind sections. */
11759 for (id = 0; id < 3; id++)
11760 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11765 /* Set up for first pass at multitoc partitioning. */
11768 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11770 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11772 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11773 htab->toc_bfd = NULL;
11774 htab->toc_first_sec = NULL;
11777 /* The linker repeatedly calls this function for each TOC input section
11778 and linker generated GOT section. Group input bfds such that the toc
11779 within a group is less than 64k in size. */
11782 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11784 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11785 bfd_vma addr, off, limit;
11790 if (!htab->second_toc_pass)
11792 /* Keep track of the first .toc or .got section for this input bfd. */
11793 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11797 htab->toc_bfd = isec->owner;
11798 htab->toc_first_sec = isec;
11801 addr = isec->output_offset + isec->output_section->vma;
11802 off = addr - htab->toc_curr;
11803 limit = 0x80008000;
11804 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11806 if (off + isec->size > limit)
11808 addr = (htab->toc_first_sec->output_offset
11809 + htab->toc_first_sec->output_section->vma);
11810 htab->toc_curr = addr;
11811 htab->toc_curr &= -TOC_BASE_ALIGN;
11814 /* toc_curr is the base address of this toc group. Set elf_gp
11815 for the input section to be the offset relative to the
11816 output toc base plus 0x8000. Making the input elf_gp an
11817 offset allows us to move the toc as a whole without
11818 recalculating input elf_gp. */
11819 off = htab->toc_curr - elf_gp (info->output_bfd);
11820 off += TOC_BASE_OFF;
11822 /* Die if someone uses a linker script that doesn't keep input
11823 file .toc and .got together. */
11825 && elf_gp (isec->owner) != 0
11826 && elf_gp (isec->owner) != off)
11829 elf_gp (isec->owner) = off;
11833 /* During the second pass toc_first_sec points to the start of
11834 a toc group, and toc_curr is used to track the old elf_gp.
11835 We use toc_bfd to ensure we only look at each bfd once. */
11836 if (htab->toc_bfd == isec->owner)
11838 htab->toc_bfd = isec->owner;
11840 if (htab->toc_first_sec == NULL
11841 || htab->toc_curr != elf_gp (isec->owner))
11843 htab->toc_curr = elf_gp (isec->owner);
11844 htab->toc_first_sec = isec;
11846 addr = (htab->toc_first_sec->output_offset
11847 + htab->toc_first_sec->output_section->vma);
11848 off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF;
11849 elf_gp (isec->owner) = off;
11854 /* Called via elf_link_hash_traverse to merge GOT entries for global
11858 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11860 if (h->root.type == bfd_link_hash_indirect)
11863 merge_got_entries (&h->got.glist);
11868 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11872 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11874 struct got_entry *gent;
11876 if (h->root.type == bfd_link_hash_indirect)
11879 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11880 if (!gent->is_indirect)
11881 allocate_got (h, (struct bfd_link_info *) inf, gent);
11885 /* Called on the first multitoc pass after the last call to
11886 ppc64_elf_next_toc_section. This function removes duplicate GOT
11890 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11892 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11893 struct bfd *ibfd, *ibfd2;
11894 bfd_boolean done_something;
11896 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11898 if (!htab->do_multi_toc)
11901 /* Merge global sym got entries within a toc group. */
11902 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11904 /* And tlsld_got. */
11905 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11907 struct got_entry *ent, *ent2;
11909 if (!is_ppc64_elf (ibfd))
11912 ent = ppc64_tlsld_got (ibfd);
11913 if (!ent->is_indirect
11914 && ent->got.offset != (bfd_vma) -1)
11916 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11918 if (!is_ppc64_elf (ibfd2))
11921 ent2 = ppc64_tlsld_got (ibfd2);
11922 if (!ent2->is_indirect
11923 && ent2->got.offset != (bfd_vma) -1
11924 && elf_gp (ibfd2) == elf_gp (ibfd))
11926 ent2->is_indirect = TRUE;
11927 ent2->got.ent = ent;
11933 /* Zap sizes of got sections. */
11934 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11935 htab->elf.irelplt->size -= htab->got_reli_size;
11936 htab->got_reli_size = 0;
11938 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11940 asection *got, *relgot;
11942 if (!is_ppc64_elf (ibfd))
11945 got = ppc64_elf_tdata (ibfd)->got;
11948 got->rawsize = got->size;
11950 relgot = ppc64_elf_tdata (ibfd)->relgot;
11951 relgot->rawsize = relgot->size;
11956 /* Now reallocate the got, local syms first. We don't need to
11957 allocate section contents again since we never increase size. */
11958 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11960 struct got_entry **lgot_ents;
11961 struct got_entry **end_lgot_ents;
11962 struct plt_entry **local_plt;
11963 struct plt_entry **end_local_plt;
11964 unsigned char *lgot_masks;
11965 bfd_size_type locsymcount;
11966 Elf_Internal_Shdr *symtab_hdr;
11969 if (!is_ppc64_elf (ibfd))
11972 lgot_ents = elf_local_got_ents (ibfd);
11976 symtab_hdr = &elf_symtab_hdr (ibfd);
11977 locsymcount = symtab_hdr->sh_info;
11978 end_lgot_ents = lgot_ents + locsymcount;
11979 local_plt = (struct plt_entry **) end_lgot_ents;
11980 end_local_plt = local_plt + locsymcount;
11981 lgot_masks = (unsigned char *) end_local_plt;
11982 s = ppc64_elf_tdata (ibfd)->got;
11983 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11985 struct got_entry *ent;
11987 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11989 unsigned int ent_size = 8;
11990 unsigned int rel_size = sizeof (Elf64_External_Rela);
11992 ent->got.offset = s->size;
11993 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11998 s->size += ent_size;
11999 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
12001 htab->elf.irelplt->size += rel_size;
12002 htab->got_reli_size += rel_size;
12004 else if (bfd_link_pic (info)
12005 && !((ent->tls_type & TLS_TPREL) != 0
12006 && bfd_link_executable (info)))
12008 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
12009 srel->size += rel_size;
12015 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
12017 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
12019 struct got_entry *ent;
12021 if (!is_ppc64_elf (ibfd))
12024 ent = ppc64_tlsld_got (ibfd);
12025 if (!ent->is_indirect
12026 && ent->got.offset != (bfd_vma) -1)
12028 asection *s = ppc64_elf_tdata (ibfd)->got;
12029 ent->got.offset = s->size;
12031 if (bfd_link_pic (info))
12033 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
12034 srel->size += sizeof (Elf64_External_Rela);
12039 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
12040 if (!done_something)
12041 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
12045 if (!is_ppc64_elf (ibfd))
12048 got = ppc64_elf_tdata (ibfd)->got;
12051 done_something = got->rawsize != got->size;
12052 if (done_something)
12057 if (done_something)
12058 (*htab->params->layout_sections_again) ();
12060 /* Set up for second pass over toc sections to recalculate elf_gp
12061 on input sections. */
12062 htab->toc_bfd = NULL;
12063 htab->toc_first_sec = NULL;
12064 htab->second_toc_pass = TRUE;
12065 return done_something;
12068 /* Called after second pass of multitoc partitioning. */
12071 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
12073 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12075 /* After the second pass, toc_curr tracks the TOC offset used
12076 for code sections below in ppc64_elf_next_input_section. */
12077 htab->toc_curr = TOC_BASE_OFF;
12080 /* No toc references were found in ISEC. If the code in ISEC makes no
12081 calls, then there's no need to use toc adjusting stubs when branching
12082 into ISEC. Actually, indirect calls from ISEC are OK as they will
12083 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
12084 needed, and 2 if a cyclical call-graph was found but no other reason
12085 for a stub was detected. If called from the top level, a return of
12086 2 means the same as a return of 0. */
12089 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
12093 /* Mark this section as checked. */
12094 isec->call_check_done = 1;
12096 /* We know none of our code bearing sections will need toc stubs. */
12097 if ((isec->flags & SEC_LINKER_CREATED) != 0)
12100 if (isec->size == 0)
12103 if (isec->output_section == NULL)
12107 if (isec->reloc_count != 0)
12109 Elf_Internal_Rela *relstart, *rel;
12110 Elf_Internal_Sym *local_syms;
12111 struct ppc_link_hash_table *htab;
12113 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
12114 info->keep_memory);
12115 if (relstart == NULL)
12118 /* Look for branches to outside of this section. */
12120 htab = ppc_hash_table (info);
12124 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
12126 enum elf_ppc64_reloc_type r_type;
12127 unsigned long r_symndx;
12128 struct elf_link_hash_entry *h;
12129 struct ppc_link_hash_entry *eh;
12130 Elf_Internal_Sym *sym;
12132 struct _opd_sec_data *opd;
12136 r_type = ELF64_R_TYPE (rel->r_info);
12137 if (r_type != R_PPC64_REL24
12138 && r_type != R_PPC64_REL14
12139 && r_type != R_PPC64_REL14_BRTAKEN
12140 && r_type != R_PPC64_REL14_BRNTAKEN
12141 && r_type != R_PPC64_PLTCALL)
12144 r_symndx = ELF64_R_SYM (rel->r_info);
12145 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
12152 /* Calls to dynamic lib functions go through a plt call stub
12154 eh = (struct ppc_link_hash_entry *) h;
12156 && (eh->elf.plt.plist != NULL
12158 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
12164 if (sym_sec == NULL)
12165 /* Ignore other undefined symbols. */
12168 /* Assume branches to other sections not included in the
12169 link need stubs too, to cover -R and absolute syms. */
12170 if (sym_sec->output_section == NULL)
12177 sym_value = sym->st_value;
12180 if (h->root.type != bfd_link_hash_defined
12181 && h->root.type != bfd_link_hash_defweak)
12183 sym_value = h->root.u.def.value;
12185 sym_value += rel->r_addend;
12187 /* If this branch reloc uses an opd sym, find the code section. */
12188 opd = get_opd_info (sym_sec);
12191 if (h == NULL && opd->adjust != NULL)
12195 adjust = opd->adjust[OPD_NDX (sym_value)];
12197 /* Assume deleted functions won't ever be called. */
12199 sym_value += adjust;
12202 dest = opd_entry_value (sym_sec, sym_value,
12203 &sym_sec, NULL, FALSE);
12204 if (dest == (bfd_vma) -1)
12209 + sym_sec->output_offset
12210 + sym_sec->output_section->vma);
12212 /* Ignore branch to self. */
12213 if (sym_sec == isec)
12216 /* If the called function uses the toc, we need a stub. */
12217 if (sym_sec->has_toc_reloc
12218 || sym_sec->makes_toc_func_call)
12224 /* Assume any branch that needs a long branch stub might in fact
12225 need a plt_branch stub. A plt_branch stub uses r2. */
12226 else if (dest - (isec->output_offset
12227 + isec->output_section->vma
12228 + rel->r_offset) + (1 << 25)
12229 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
12237 /* If calling back to a section in the process of being
12238 tested, we can't say for sure that no toc adjusting stubs
12239 are needed, so don't return zero. */
12240 else if (sym_sec->call_check_in_progress)
12243 /* Branches to another section that itself doesn't have any TOC
12244 references are OK. Recursively call ourselves to check. */
12245 else if (!sym_sec->call_check_done)
12249 /* Mark current section as indeterminate, so that other
12250 sections that call back to current won't be marked as
12252 isec->call_check_in_progress = 1;
12253 recur = toc_adjusting_stub_needed (info, sym_sec);
12254 isec->call_check_in_progress = 0;
12265 if (local_syms != NULL
12266 && (elf_symtab_hdr (isec->owner).contents
12267 != (unsigned char *) local_syms))
12269 if (elf_section_data (isec)->relocs != relstart)
12274 && isec->map_head.s != NULL
12275 && (strcmp (isec->output_section->name, ".init") == 0
12276 || strcmp (isec->output_section->name, ".fini") == 0))
12278 if (isec->map_head.s->has_toc_reloc
12279 || isec->map_head.s->makes_toc_func_call)
12281 else if (!isec->map_head.s->call_check_done)
12284 isec->call_check_in_progress = 1;
12285 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
12286 isec->call_check_in_progress = 0;
12293 isec->makes_toc_func_call = 1;
12298 /* The linker repeatedly calls this function for each input section,
12299 in the order that input sections are linked into output sections.
12300 Build lists of input sections to determine groupings between which
12301 we may insert linker stubs. */
12304 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
12306 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12311 if ((isec->output_section->flags & SEC_CODE) != 0
12312 && isec->output_section->id < htab->sec_info_arr_size)
12314 /* This happens to make the list in reverse order,
12315 which is what we want. */
12316 htab->sec_info[isec->id].u.list
12317 = htab->sec_info[isec->output_section->id].u.list;
12318 htab->sec_info[isec->output_section->id].u.list = isec;
12321 if (htab->multi_toc_needed)
12323 /* Analyse sections that aren't already flagged as needing a
12324 valid toc pointer. Exclude .fixup for the linux kernel.
12325 .fixup contains branches, but only back to the function that
12326 hit an exception. */
12327 if (!(isec->has_toc_reloc
12328 || (isec->flags & SEC_CODE) == 0
12329 || strcmp (isec->name, ".fixup") == 0
12330 || isec->call_check_done))
12332 if (toc_adjusting_stub_needed (info, isec) < 0)
12335 /* Make all sections use the TOC assigned for this object file.
12336 This will be wrong for pasted sections; We fix that in
12337 check_pasted_section(). */
12338 if (elf_gp (isec->owner) != 0)
12339 htab->toc_curr = elf_gp (isec->owner);
12342 htab->sec_info[isec->id].toc_off = htab->toc_curr;
12346 /* Check that all .init and .fini sections use the same toc, if they
12347 have toc relocs. */
12350 check_pasted_section (struct bfd_link_info *info, const char *name)
12352 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12356 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12357 bfd_vma toc_off = 0;
12360 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12361 if (i->has_toc_reloc)
12364 toc_off = htab->sec_info[i->id].toc_off;
12365 else if (toc_off != htab->sec_info[i->id].toc_off)
12370 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12371 if (i->makes_toc_func_call)
12373 toc_off = htab->sec_info[i->id].toc_off;
12377 /* Make sure the whole pasted function uses the same toc offset. */
12379 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12380 htab->sec_info[i->id].toc_off = toc_off;
12386 ppc64_elf_check_init_fini (struct bfd_link_info *info)
12388 return (check_pasted_section (info, ".init")
12389 & check_pasted_section (info, ".fini"));
12392 /* See whether we can group stub sections together. Grouping stub
12393 sections may result in fewer stubs. More importantly, we need to
12394 put all .init* and .fini* stubs at the beginning of the .init or
12395 .fini output sections respectively, because glibc splits the
12396 _init and _fini functions into multiple parts. Putting a stub in
12397 the middle of a function is not a good idea. */
12400 group_sections (struct bfd_link_info *info,
12401 bfd_size_type stub_group_size,
12402 bfd_boolean stubs_always_before_branch)
12404 struct ppc_link_hash_table *htab;
12406 bfd_boolean suppress_size_errors;
12408 htab = ppc_hash_table (info);
12412 suppress_size_errors = FALSE;
12413 if (stub_group_size == 1)
12415 /* Default values. */
12416 if (stubs_always_before_branch)
12417 stub_group_size = 0x1e00000;
12419 stub_group_size = 0x1c00000;
12420 suppress_size_errors = TRUE;
12423 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12427 if (osec->id >= htab->sec_info_arr_size)
12430 tail = htab->sec_info[osec->id].u.list;
12431 while (tail != NULL)
12435 bfd_size_type total;
12436 bfd_boolean big_sec;
12438 struct map_stub *group;
12439 bfd_size_type group_size;
12442 total = tail->size;
12443 group_size = (ppc64_elf_section_data (tail) != NULL
12444 && ppc64_elf_section_data (tail)->has_14bit_branch
12445 ? stub_group_size >> 10 : stub_group_size);
12447 big_sec = total > group_size;
12448 if (big_sec && !suppress_size_errors)
12449 /* xgettext:c-format */
12450 _bfd_error_handler (_("%pB section %pA exceeds stub group size"),
12451 tail->owner, tail);
12452 curr_toc = htab->sec_info[tail->id].toc_off;
12454 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12455 && ((total += curr->output_offset - prev->output_offset)
12456 < (ppc64_elf_section_data (prev) != NULL
12457 && ppc64_elf_section_data (prev)->has_14bit_branch
12458 ? (group_size = stub_group_size >> 10) : group_size))
12459 && htab->sec_info[prev->id].toc_off == curr_toc)
12462 /* OK, the size from the start of CURR to the end is less
12463 than group_size and thus can be handled by one stub
12464 section. (or the tail section is itself larger than
12465 group_size, in which case we may be toast.) We should
12466 really be keeping track of the total size of stubs added
12467 here, as stubs contribute to the final output section
12468 size. That's a little tricky, and this way will only
12469 break if stubs added make the total size more than 2^25,
12470 ie. for the default stub_group_size, if stubs total more
12471 than 2097152 bytes, or nearly 75000 plt call stubs. */
12472 group = bfd_alloc (curr->owner, sizeof (*group));
12475 group->link_sec = curr;
12476 group->stub_sec = NULL;
12477 group->needs_save_res = 0;
12478 group->tls_get_addr_opt_bctrl = -1u;
12479 group->next = htab->group;
12480 htab->group = group;
12483 prev = htab->sec_info[tail->id].u.list;
12484 /* Set up this stub group. */
12485 htab->sec_info[tail->id].u.group = group;
12487 while (tail != curr && (tail = prev) != NULL);
12489 /* But wait, there's more! Input sections up to group_size
12490 bytes before the stub section can be handled by it too.
12491 Don't do this if we have a really large section after the
12492 stubs, as adding more stubs increases the chance that
12493 branches may not reach into the stub section. */
12494 if (!stubs_always_before_branch && !big_sec)
12497 while (prev != NULL
12498 && ((total += tail->output_offset - prev->output_offset)
12499 < (ppc64_elf_section_data (prev) != NULL
12500 && ppc64_elf_section_data (prev)->has_14bit_branch
12501 ? (group_size = stub_group_size >> 10) : group_size))
12502 && htab->sec_info[prev->id].toc_off == curr_toc)
12505 prev = htab->sec_info[tail->id].u.list;
12506 htab->sec_info[tail->id].u.group = group;
12515 static const unsigned char glink_eh_frame_cie[] =
12517 0, 0, 0, 16, /* length. */
12518 0, 0, 0, 0, /* id. */
12519 1, /* CIE version. */
12520 'z', 'R', 0, /* Augmentation string. */
12521 4, /* Code alignment. */
12522 0x78, /* Data alignment. */
12524 1, /* Augmentation size. */
12525 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12526 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
12530 stub_eh_frame_size (struct map_stub *group, size_t align)
12532 size_t this_size = 17;
12533 if (group->tls_get_addr_opt_bctrl != -1u)
12535 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12538 else if (to_bctrl < 256)
12540 else if (to_bctrl < 65536)
12546 this_size = (this_size + align - 1) & -align;
12550 /* Stripping output sections is normally done before dynamic section
12551 symbols have been allocated. This function is called later, and
12552 handles cases like htab->brlt which is mapped to its own output
12556 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12558 if (isec->size == 0
12559 && isec->output_section->size == 0
12560 && !(isec->output_section->flags & SEC_KEEP)
12561 && !bfd_section_removed_from_list (info->output_bfd,
12562 isec->output_section)
12563 && elf_section_data (isec->output_section)->dynindx == 0)
12565 isec->output_section->flags |= SEC_EXCLUDE;
12566 bfd_section_list_remove (info->output_bfd, isec->output_section);
12567 info->output_bfd->section_count--;
12571 /* Determine and set the size of the stub section for a final link.
12573 The basic idea here is to examine all the relocations looking for
12574 PC-relative calls to a target that is unreachable with a "bl"
12578 ppc64_elf_size_stubs (struct bfd_link_info *info)
12580 bfd_size_type stub_group_size;
12581 bfd_boolean stubs_always_before_branch;
12582 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12587 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12588 htab->params->plt_thread_safe = 1;
12589 if (!htab->opd_abi)
12590 htab->params->plt_thread_safe = 0;
12591 else if (htab->params->plt_thread_safe == -1)
12593 static const char *const thread_starter[] =
12597 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12599 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12600 "mq_notify", "create_timer",
12605 "GOMP_parallel_start",
12606 "GOMP_parallel_loop_static",
12607 "GOMP_parallel_loop_static_start",
12608 "GOMP_parallel_loop_dynamic",
12609 "GOMP_parallel_loop_dynamic_start",
12610 "GOMP_parallel_loop_guided",
12611 "GOMP_parallel_loop_guided_start",
12612 "GOMP_parallel_loop_runtime",
12613 "GOMP_parallel_loop_runtime_start",
12614 "GOMP_parallel_sections",
12615 "GOMP_parallel_sections_start",
12621 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12623 struct elf_link_hash_entry *h;
12624 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12625 FALSE, FALSE, TRUE);
12626 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12627 if (htab->params->plt_thread_safe)
12631 stubs_always_before_branch = htab->params->group_size < 0;
12632 if (htab->params->group_size < 0)
12633 stub_group_size = -htab->params->group_size;
12635 stub_group_size = htab->params->group_size;
12637 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12640 #define STUB_SHRINK_ITER 20
12641 /* Loop until no stubs added. After iteration 20 of this loop we may
12642 exit on a stub section shrinking. This is to break out of a
12643 pathological case where adding stubs on one iteration decreases
12644 section gaps (perhaps due to alignment), which then requires
12645 fewer or smaller stubs on the next iteration. */
12650 unsigned int bfd_indx;
12651 struct map_stub *group;
12653 htab->stub_iteration += 1;
12655 for (input_bfd = info->input_bfds, bfd_indx = 0;
12657 input_bfd = input_bfd->link.next, bfd_indx++)
12659 Elf_Internal_Shdr *symtab_hdr;
12661 Elf_Internal_Sym *local_syms = NULL;
12663 if (!is_ppc64_elf (input_bfd))
12666 /* We'll need the symbol table in a second. */
12667 symtab_hdr = &elf_symtab_hdr (input_bfd);
12668 if (symtab_hdr->sh_info == 0)
12671 /* Walk over each section attached to the input bfd. */
12672 for (section = input_bfd->sections;
12674 section = section->next)
12676 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12678 /* If there aren't any relocs, then there's nothing more
12680 if ((section->flags & SEC_RELOC) == 0
12681 || (section->flags & SEC_ALLOC) == 0
12682 || (section->flags & SEC_LOAD) == 0
12683 || (section->flags & SEC_CODE) == 0
12684 || section->reloc_count == 0)
12687 /* If this section is a link-once section that will be
12688 discarded, then don't create any stubs. */
12689 if (section->output_section == NULL
12690 || section->output_section->owner != info->output_bfd)
12693 /* Get the relocs. */
12695 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12696 info->keep_memory);
12697 if (internal_relocs == NULL)
12698 goto error_ret_free_local;
12700 /* Now examine each relocation. */
12701 irela = internal_relocs;
12702 irelaend = irela + section->reloc_count;
12703 for (; irela < irelaend; irela++)
12705 enum elf_ppc64_reloc_type r_type;
12706 unsigned int r_indx;
12707 enum ppc_stub_type stub_type;
12708 struct ppc_stub_hash_entry *stub_entry;
12709 asection *sym_sec, *code_sec;
12710 bfd_vma sym_value, code_value;
12711 bfd_vma destination;
12712 unsigned long local_off;
12713 bfd_boolean ok_dest;
12714 struct ppc_link_hash_entry *hash;
12715 struct ppc_link_hash_entry *fdh;
12716 struct elf_link_hash_entry *h;
12717 Elf_Internal_Sym *sym;
12719 const asection *id_sec;
12720 struct _opd_sec_data *opd;
12721 struct plt_entry *plt_ent;
12723 r_type = ELF64_R_TYPE (irela->r_info);
12724 r_indx = ELF64_R_SYM (irela->r_info);
12726 if (r_type >= R_PPC64_max)
12728 bfd_set_error (bfd_error_bad_value);
12729 goto error_ret_free_internal;
12732 /* Only look for stubs on branch instructions. */
12733 if (r_type != R_PPC64_REL24
12734 && r_type != R_PPC64_REL14
12735 && r_type != R_PPC64_REL14_BRTAKEN
12736 && r_type != R_PPC64_REL14_BRNTAKEN)
12739 /* Now determine the call target, its name, value,
12741 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12742 r_indx, input_bfd))
12743 goto error_ret_free_internal;
12744 hash = (struct ppc_link_hash_entry *) h;
12751 sym_value = sym->st_value;
12752 if (sym_sec != NULL
12753 && sym_sec->output_section != NULL)
12756 else if (hash->elf.root.type == bfd_link_hash_defined
12757 || hash->elf.root.type == bfd_link_hash_defweak)
12759 sym_value = hash->elf.root.u.def.value;
12760 if (sym_sec->output_section != NULL)
12763 else if (hash->elf.root.type == bfd_link_hash_undefweak
12764 || hash->elf.root.type == bfd_link_hash_undefined)
12766 /* Recognise an old ABI func code entry sym, and
12767 use the func descriptor sym instead if it is
12769 if (hash->elf.root.root.string[0] == '.'
12770 && hash->oh != NULL)
12772 fdh = ppc_follow_link (hash->oh);
12773 if (fdh->elf.root.type == bfd_link_hash_defined
12774 || fdh->elf.root.type == bfd_link_hash_defweak)
12776 sym_sec = fdh->elf.root.u.def.section;
12777 sym_value = fdh->elf.root.u.def.value;
12778 if (sym_sec->output_section != NULL)
12787 bfd_set_error (bfd_error_bad_value);
12788 goto error_ret_free_internal;
12795 sym_value += irela->r_addend;
12796 destination = (sym_value
12797 + sym_sec->output_offset
12798 + sym_sec->output_section->vma);
12799 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12804 code_sec = sym_sec;
12805 code_value = sym_value;
12806 opd = get_opd_info (sym_sec);
12811 if (hash == NULL && opd->adjust != NULL)
12813 long adjust = opd->adjust[OPD_NDX (sym_value)];
12816 code_value += adjust;
12817 sym_value += adjust;
12819 dest = opd_entry_value (sym_sec, sym_value,
12820 &code_sec, &code_value, FALSE);
12821 if (dest != (bfd_vma) -1)
12823 destination = dest;
12826 /* Fixup old ABI sym to point at code
12828 hash->elf.root.type = bfd_link_hash_defweak;
12829 hash->elf.root.u.def.section = code_sec;
12830 hash->elf.root.u.def.value = code_value;
12835 /* Determine what (if any) linker stub is needed. */
12837 stub_type = ppc_type_of_stub (section, irela, &hash,
12838 &plt_ent, destination,
12841 if (stub_type != ppc_stub_plt_call)
12843 /* Check whether we need a TOC adjusting stub.
12844 Since the linker pastes together pieces from
12845 different object files when creating the
12846 _init and _fini functions, it may be that a
12847 call to what looks like a local sym is in
12848 fact a call needing a TOC adjustment. */
12849 if (code_sec != NULL
12850 && code_sec->output_section != NULL
12851 && (htab->sec_info[code_sec->id].toc_off
12852 != htab->sec_info[section->id].toc_off)
12853 && (code_sec->has_toc_reloc
12854 || code_sec->makes_toc_func_call))
12855 stub_type = ppc_stub_long_branch_r2off;
12858 if (stub_type == ppc_stub_none)
12861 /* __tls_get_addr calls might be eliminated. */
12862 if (stub_type != ppc_stub_plt_call
12864 && (hash == htab->tls_get_addr
12865 || hash == htab->tls_get_addr_fd)
12866 && section->has_tls_reloc
12867 && irela != internal_relocs)
12869 /* Get tls info. */
12870 unsigned char *tls_mask;
12872 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12873 irela - 1, input_bfd))
12874 goto error_ret_free_internal;
12875 if ((*tls_mask & TLS_TLS) != 0)
12879 if (stub_type == ppc_stub_plt_call)
12882 && htab->params->plt_localentry0 != 0
12883 && is_elfv2_localentry0 (&hash->elf))
12884 htab->has_plt_localentry0 = 1;
12885 else if (irela + 1 < irelaend
12886 && irela[1].r_offset == irela->r_offset + 4
12887 && (ELF64_R_TYPE (irela[1].r_info)
12888 == R_PPC64_TOCSAVE))
12890 if (!tocsave_find (htab, INSERT,
12891 &local_syms, irela + 1, input_bfd))
12892 goto error_ret_free_internal;
12895 stub_type = ppc_stub_plt_call_r2save;
12898 /* Support for grouping stub sections. */
12899 id_sec = htab->sec_info[section->id].u.group->link_sec;
12901 /* Get the name of this stub. */
12902 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12904 goto error_ret_free_internal;
12906 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12907 stub_name, FALSE, FALSE);
12908 if (stub_entry != NULL)
12910 /* The proper stub has already been created. */
12912 if (stub_type == ppc_stub_plt_call_r2save)
12913 stub_entry->stub_type = stub_type;
12917 stub_entry = ppc_add_stub (stub_name, section, info);
12918 if (stub_entry == NULL)
12921 error_ret_free_internal:
12922 if (elf_section_data (section)->relocs == NULL)
12923 free (internal_relocs);
12924 error_ret_free_local:
12925 if (local_syms != NULL
12926 && (symtab_hdr->contents
12927 != (unsigned char *) local_syms))
12932 stub_entry->stub_type = stub_type;
12933 if (stub_type != ppc_stub_plt_call
12934 && stub_type != ppc_stub_plt_call_r2save)
12936 stub_entry->target_value = code_value;
12937 stub_entry->target_section = code_sec;
12941 stub_entry->target_value = sym_value;
12942 stub_entry->target_section = sym_sec;
12944 stub_entry->h = hash;
12945 stub_entry->plt_ent = plt_ent;
12946 stub_entry->symtype
12947 = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info);
12948 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12950 if (stub_entry->h != NULL)
12951 htab->stub_globals += 1;
12954 /* We're done with the internal relocs, free them. */
12955 if (elf_section_data (section)->relocs != internal_relocs)
12956 free (internal_relocs);
12959 if (local_syms != NULL
12960 && symtab_hdr->contents != (unsigned char *) local_syms)
12962 if (!info->keep_memory)
12965 symtab_hdr->contents = (unsigned char *) local_syms;
12969 /* We may have added some stubs. Find out the new size of the
12971 for (group = htab->group; group != NULL; group = group->next)
12972 if (group->stub_sec != NULL)
12974 asection *stub_sec = group->stub_sec;
12976 if (htab->stub_iteration <= STUB_SHRINK_ITER
12977 || stub_sec->rawsize < stub_sec->size)
12978 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12979 stub_sec->rawsize = stub_sec->size;
12980 stub_sec->size = 0;
12981 stub_sec->reloc_count = 0;
12982 stub_sec->flags &= ~SEC_RELOC;
12985 if (htab->stub_iteration <= STUB_SHRINK_ITER
12986 || htab->brlt->rawsize < htab->brlt->size)
12987 htab->brlt->rawsize = htab->brlt->size;
12988 htab->brlt->size = 0;
12989 htab->brlt->reloc_count = 0;
12990 htab->brlt->flags &= ~SEC_RELOC;
12991 if (htab->relbrlt != NULL)
12992 htab->relbrlt->size = 0;
12994 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12996 for (group = htab->group; group != NULL; group = group->next)
12997 if (group->needs_save_res)
12998 group->stub_sec->size += htab->sfpr->size;
13000 if (info->emitrelocations
13001 && htab->glink != NULL && htab->glink->size != 0)
13003 htab->glink->reloc_count = 1;
13004 htab->glink->flags |= SEC_RELOC;
13007 if (htab->glink_eh_frame != NULL
13008 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
13009 && htab->glink_eh_frame->output_section->size > 8)
13011 size_t size = 0, align = 4;
13013 for (group = htab->group; group != NULL; group = group->next)
13014 if (group->stub_sec != NULL)
13015 size += stub_eh_frame_size (group, align);
13016 if (htab->glink != NULL && htab->glink->size != 0)
13017 size += (24 + align - 1) & -align;
13019 size += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
13020 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
13021 size = (size + align - 1) & -align;
13022 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
13023 htab->glink_eh_frame->size = size;
13026 if (htab->params->plt_stub_align != 0)
13027 for (group = htab->group; group != NULL; group = group->next)
13028 if (group->stub_sec != NULL)
13030 int align = abs (htab->params->plt_stub_align);
13031 group->stub_sec->size
13032 = (group->stub_sec->size + (1 << align) - 1) & -(1 << align);
13035 for (group = htab->group; group != NULL; group = group->next)
13036 if (group->stub_sec != NULL
13037 && group->stub_sec->rawsize != group->stub_sec->size
13038 && (htab->stub_iteration <= STUB_SHRINK_ITER
13039 || group->stub_sec->rawsize < group->stub_sec->size))
13043 && (htab->brlt->rawsize == htab->brlt->size
13044 || (htab->stub_iteration > STUB_SHRINK_ITER
13045 && htab->brlt->rawsize > htab->brlt->size))
13046 && (htab->glink_eh_frame == NULL
13047 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
13050 /* Ask the linker to do its stuff. */
13051 (*htab->params->layout_sections_again) ();
13054 if (htab->glink_eh_frame != NULL
13055 && htab->glink_eh_frame->size != 0)
13058 bfd_byte *p, *last_fde;
13059 size_t last_fde_len, size, align, pad;
13060 struct map_stub *group;
13062 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
13065 htab->glink_eh_frame->contents = p;
13069 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
13070 /* CIE length (rewrite in case little-endian). */
13071 last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4;
13072 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
13073 p += last_fde_len + 4;
13075 for (group = htab->group; group != NULL; group = group->next)
13076 if (group->stub_sec != NULL)
13079 last_fde_len = stub_eh_frame_size (group, align) - 4;
13081 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
13084 val = p - htab->glink_eh_frame->contents;
13085 bfd_put_32 (htab->elf.dynobj, val, p);
13087 /* Offset to stub section, written later. */
13089 /* stub section size. */
13090 bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p);
13092 /* Augmentation. */
13094 if (group->tls_get_addr_opt_bctrl != -1u)
13096 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
13098 /* This FDE needs more than just the default.
13099 Describe __tls_get_addr_opt stub LR. */
13101 *p++ = DW_CFA_advance_loc + to_bctrl;
13102 else if (to_bctrl < 256)
13104 *p++ = DW_CFA_advance_loc1;
13107 else if (to_bctrl < 65536)
13109 *p++ = DW_CFA_advance_loc2;
13110 bfd_put_16 (htab->elf.dynobj, to_bctrl, p);
13115 *p++ = DW_CFA_advance_loc4;
13116 bfd_put_32 (htab->elf.dynobj, to_bctrl, p);
13119 *p++ = DW_CFA_offset_extended_sf;
13121 *p++ = -(STK_LINKER (htab) / 8) & 0x7f;
13122 *p++ = DW_CFA_advance_loc + 4;
13123 *p++ = DW_CFA_restore_extended;
13127 p = last_fde + last_fde_len + 4;
13129 if (htab->glink != NULL && htab->glink->size != 0)
13132 last_fde_len = ((24 + align - 1) & -align) - 4;
13134 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
13137 val = p - htab->glink_eh_frame->contents;
13138 bfd_put_32 (htab->elf.dynobj, val, p);
13140 /* Offset to .glink, written later. */
13143 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
13145 /* Augmentation. */
13148 *p++ = DW_CFA_advance_loc + 1;
13149 *p++ = DW_CFA_register;
13151 *p++ = htab->opd_abi ? 12 : 0;
13152 *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7);
13153 *p++ = DW_CFA_restore_extended;
13155 p += ((24 + align - 1) & -align) - 24;
13157 /* Subsume any padding into the last FDE if user .eh_frame
13158 sections are aligned more than glink_eh_frame. Otherwise any
13159 zero padding will be seen as a terminator. */
13160 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
13161 size = p - htab->glink_eh_frame->contents;
13162 pad = ((size + align - 1) & -align) - size;
13163 htab->glink_eh_frame->size = size + pad;
13164 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
13167 maybe_strip_output (info, htab->brlt);
13168 if (htab->glink_eh_frame != NULL)
13169 maybe_strip_output (info, htab->glink_eh_frame);
13174 /* Called after we have determined section placement. If sections
13175 move, we'll be called again. Provide a value for TOCstart. */
13178 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
13181 bfd_vma TOCstart, adjust;
13185 struct elf_link_hash_entry *h;
13186 struct elf_link_hash_table *htab = elf_hash_table (info);
13188 if (is_elf_hash_table (htab)
13189 && htab->hgot != NULL)
13193 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
13194 if (is_elf_hash_table (htab))
13198 && h->root.type == bfd_link_hash_defined
13199 && !h->root.linker_def
13200 && (!is_elf_hash_table (htab)
13201 || h->def_regular))
13203 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
13204 + h->root.u.def.section->output_offset
13205 + h->root.u.def.section->output_section->vma);
13206 _bfd_set_gp_value (obfd, TOCstart);
13211 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
13212 order. The TOC starts where the first of these sections starts. */
13213 s = bfd_get_section_by_name (obfd, ".got");
13214 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13215 s = bfd_get_section_by_name (obfd, ".toc");
13216 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13217 s = bfd_get_section_by_name (obfd, ".tocbss");
13218 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13219 s = bfd_get_section_by_name (obfd, ".plt");
13220 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13222 /* This may happen for
13223 o references to TOC base (SYM@toc / TOC[tc0]) without a
13225 o bad linker script
13226 o --gc-sections and empty TOC sections
13228 FIXME: Warn user? */
13230 /* Look for a likely section. We probably won't even be
13232 for (s = obfd->sections; s != NULL; s = s->next)
13233 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
13235 == (SEC_ALLOC | SEC_SMALL_DATA))
13238 for (s = obfd->sections; s != NULL; s = s->next)
13239 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
13240 == (SEC_ALLOC | SEC_SMALL_DATA))
13243 for (s = obfd->sections; s != NULL; s = s->next)
13244 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
13248 for (s = obfd->sections; s != NULL; s = s->next)
13249 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
13255 TOCstart = s->output_section->vma + s->output_offset;
13257 /* Force alignment. */
13258 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
13259 TOCstart -= adjust;
13260 _bfd_set_gp_value (obfd, TOCstart);
13262 if (info != NULL && s != NULL)
13264 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13268 if (htab->elf.hgot != NULL)
13270 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
13271 htab->elf.hgot->root.u.def.section = s;
13276 struct bfd_link_hash_entry *bh = NULL;
13277 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
13278 s, TOC_BASE_OFF - adjust,
13279 NULL, FALSE, FALSE, &bh);
13285 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
13286 write out any global entry stubs, and PLT relocations. */
13289 build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf)
13291 struct bfd_link_info *info;
13292 struct ppc_link_hash_table *htab;
13293 struct plt_entry *ent;
13296 if (h->root.type == bfd_link_hash_indirect)
13300 htab = ppc_hash_table (info);
13304 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13305 if (ent->plt.offset != (bfd_vma) -1)
13307 /* This symbol has an entry in the procedure linkage
13308 table. Set it up. */
13309 Elf_Internal_Rela rela;
13310 asection *plt, *relplt;
13313 if (!htab->elf.dynamic_sections_created
13314 || h->dynindx == -1)
13316 if (!(h->def_regular
13317 && (h->root.type == bfd_link_hash_defined
13318 || h->root.type == bfd_link_hash_defweak)))
13320 if (h->type == STT_GNU_IFUNC)
13322 plt = htab->elf.iplt;
13323 relplt = htab->elf.irelplt;
13324 htab->local_ifunc_resolver = 1;
13326 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13328 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13332 plt = htab->pltlocal;
13333 if (bfd_link_pic (info))
13335 relplt = htab->relpltlocal;
13337 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT);
13339 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13344 rela.r_addend = (h->root.u.def.value
13345 + h->root.u.def.section->output_offset
13346 + h->root.u.def.section->output_section->vma
13349 if (relplt == NULL)
13351 loc = plt->contents + ent->plt.offset;
13352 bfd_put_64 (info->output_bfd, rela.r_addend, loc);
13355 bfd_vma toc = elf_gp (info->output_bfd);
13356 toc += htab->sec_info[h->root.u.def.section->id].toc_off;
13357 bfd_put_64 (info->output_bfd, toc, loc + 8);
13362 rela.r_offset = (plt->output_section->vma
13363 + plt->output_offset
13364 + ent->plt.offset);
13365 loc = relplt->contents + (relplt->reloc_count++
13366 * sizeof (Elf64_External_Rela));
13367 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc);
13372 rela.r_offset = (htab->elf.splt->output_section->vma
13373 + htab->elf.splt->output_offset
13374 + ent->plt.offset);
13375 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13376 rela.r_addend = ent->addend;
13377 loc = (htab->elf.srelplt->contents
13378 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
13379 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
13380 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
13381 htab->maybe_local_ifunc_resolver = 1;
13382 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc);
13386 if (!h->pointer_equality_needed)
13389 if (h->def_regular)
13392 s = htab->global_entry;
13393 if (s == NULL || s->size == 0)
13396 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13397 if (ent->plt.offset != (bfd_vma) -1
13398 && ent->addend == 0)
13404 p = s->contents + h->root.u.def.value;
13405 plt = htab->elf.splt;
13406 if (!htab->elf.dynamic_sections_created
13407 || h->dynindx == -1)
13409 if (h->type == STT_GNU_IFUNC)
13410 plt = htab->elf.iplt;
13412 plt = htab->pltlocal;
13414 off = ent->plt.offset + plt->output_offset + plt->output_section->vma;
13415 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
13417 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
13419 info->callbacks->einfo
13420 (_("%P: linkage table error against `%pT'\n"),
13421 h->root.root.string);
13422 bfd_set_error (bfd_error_bad_value);
13423 htab->stub_error = TRUE;
13426 htab->stub_count[ppc_stub_global_entry - 1] += 1;
13427 if (htab->params->emit_stub_syms)
13429 size_t len = strlen (h->root.root.string);
13430 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
13435 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
13436 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
13439 if (h->root.type == bfd_link_hash_new)
13441 h->root.type = bfd_link_hash_defined;
13442 h->root.u.def.section = s;
13443 h->root.u.def.value = p - s->contents;
13444 h->ref_regular = 1;
13445 h->def_regular = 1;
13446 h->ref_regular_nonweak = 1;
13447 h->forced_local = 1;
13449 h->root.linker_def = 1;
13453 if (PPC_HA (off) != 0)
13455 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
13458 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
13460 bfd_put_32 (s->owner, MTCTR_R12, p);
13462 bfd_put_32 (s->owner, BCTR, p);
13468 /* Write PLT relocs for locals. */
13471 write_plt_relocs_for_local_syms (struct bfd_link_info *info)
13473 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13476 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
13478 struct got_entry **lgot_ents, **end_lgot_ents;
13479 struct plt_entry **local_plt, **lplt, **end_local_plt;
13480 Elf_Internal_Shdr *symtab_hdr;
13481 bfd_size_type locsymcount;
13482 Elf_Internal_Sym *local_syms = NULL;
13483 struct plt_entry *ent;
13485 if (!is_ppc64_elf (ibfd))
13488 lgot_ents = elf_local_got_ents (ibfd);
13492 symtab_hdr = &elf_symtab_hdr (ibfd);
13493 locsymcount = symtab_hdr->sh_info;
13494 end_lgot_ents = lgot_ents + locsymcount;
13495 local_plt = (struct plt_entry **) end_lgot_ents;
13496 end_local_plt = local_plt + locsymcount;
13497 for (lplt = local_plt; lplt < end_local_plt; ++lplt)
13498 for (ent = *lplt; ent != NULL; ent = ent->next)
13499 if (ent->plt.offset != (bfd_vma) -1)
13501 Elf_Internal_Sym *sym;
13503 asection *plt, *relplt;
13507 if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms,
13508 lplt - local_plt, ibfd))
13510 if (local_syms != NULL
13511 && symtab_hdr->contents != (unsigned char *) local_syms)
13516 val = sym->st_value + ent->addend;
13517 val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other);
13518 if (sym_sec != NULL && sym_sec->output_section != NULL)
13519 val += sym_sec->output_offset + sym_sec->output_section->vma;
13521 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13523 htab->local_ifunc_resolver = 1;
13524 plt = htab->elf.iplt;
13525 relplt = htab->elf.irelplt;
13529 plt = htab->pltlocal;
13530 relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL;
13533 if (relplt == NULL)
13535 loc = plt->contents + ent->plt.offset;
13536 bfd_put_64 (info->output_bfd, val, loc);
13539 bfd_vma toc = elf_gp (ibfd);
13540 bfd_put_64 (info->output_bfd, toc, loc + 8);
13545 Elf_Internal_Rela rela;
13546 rela.r_offset = (ent->plt.offset
13547 + plt->output_offset
13548 + plt->output_section->vma);
13549 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13552 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13554 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13559 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT);
13561 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13563 rela.r_addend = val;
13564 loc = relplt->contents + (relplt->reloc_count++
13565 * sizeof (Elf64_External_Rela));
13566 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc);
13570 if (local_syms != NULL
13571 && symtab_hdr->contents != (unsigned char *) local_syms)
13573 if (!info->keep_memory)
13576 symtab_hdr->contents = (unsigned char *) local_syms;
13582 /* Build all the stubs associated with the current output file.
13583 The stubs are kept in a hash table attached to the main linker
13584 hash table. This function is called via gldelf64ppc_finish. */
13587 ppc64_elf_build_stubs (struct bfd_link_info *info,
13590 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13591 struct map_stub *group;
13592 asection *stub_sec;
13594 int stub_sec_count = 0;
13599 /* Allocate memory to hold the linker stubs. */
13600 for (group = htab->group; group != NULL; group = group->next)
13601 if ((stub_sec = group->stub_sec) != NULL
13602 && stub_sec->size != 0)
13604 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
13605 if (stub_sec->contents == NULL)
13607 stub_sec->size = 0;
13610 if (htab->glink != NULL && htab->glink->size != 0)
13615 /* Build the .glink plt call stub. */
13616 if (htab->params->emit_stub_syms)
13618 struct elf_link_hash_entry *h;
13619 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13620 TRUE, FALSE, FALSE);
13623 if (h->root.type == bfd_link_hash_new)
13625 h->root.type = bfd_link_hash_defined;
13626 h->root.u.def.section = htab->glink;
13627 h->root.u.def.value = 8;
13628 h->ref_regular = 1;
13629 h->def_regular = 1;
13630 h->ref_regular_nonweak = 1;
13631 h->forced_local = 1;
13633 h->root.linker_def = 1;
13636 plt0 = (htab->elf.splt->output_section->vma
13637 + htab->elf.splt->output_offset
13639 if (info->emitrelocations)
13641 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13644 r->r_offset = (htab->glink->output_offset
13645 + htab->glink->output_section->vma);
13646 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13647 r->r_addend = plt0;
13649 p = htab->glink->contents;
13650 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
13651 bfd_put_64 (htab->glink->owner, plt0, p);
13655 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13657 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13659 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13661 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13663 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13665 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13667 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13669 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13671 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13673 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13678 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
13680 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13682 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13684 bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p);
13686 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13688 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13690 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13692 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13694 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13696 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13698 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13700 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13702 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13705 bfd_put_32 (htab->glink->owner, BCTR, p);
13707 BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab));
13709 /* Build the .glink lazy link call stubs. */
13711 while (p < htab->glink->contents + htab->glink->size)
13717 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13722 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13724 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13729 bfd_put_32 (htab->glink->owner,
13730 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13736 /* Build .glink global entry stubs, and PLT relocs for globals. */
13737 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info);
13739 if (!write_plt_relocs_for_local_syms (info))
13742 if (htab->brlt != NULL && htab->brlt->size != 0)
13744 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13746 if (htab->brlt->contents == NULL)
13749 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13751 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13752 htab->relbrlt->size);
13753 if (htab->relbrlt->contents == NULL)
13757 /* Build the stubs as directed by the stub hash table. */
13758 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13760 for (group = htab->group; group != NULL; group = group->next)
13761 if (group->needs_save_res)
13762 group->stub_sec->size += htab->sfpr->size;
13764 if (htab->relbrlt != NULL)
13765 htab->relbrlt->reloc_count = 0;
13767 if (htab->params->plt_stub_align != 0)
13768 for (group = htab->group; group != NULL; group = group->next)
13769 if ((stub_sec = group->stub_sec) != NULL)
13771 int align = abs (htab->params->plt_stub_align);
13772 stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align);
13775 for (group = htab->group; group != NULL; group = group->next)
13776 if (group->needs_save_res)
13778 stub_sec = group->stub_sec;
13779 memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size,
13780 htab->sfpr->contents, htab->sfpr->size);
13781 if (htab->params->emit_stub_syms)
13785 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13786 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13791 for (group = htab->group; group != NULL; group = group->next)
13792 if ((stub_sec = group->stub_sec) != NULL)
13794 stub_sec_count += 1;
13795 if (stub_sec->rawsize != stub_sec->size
13796 && (htab->stub_iteration <= STUB_SHRINK_ITER
13797 || stub_sec->rawsize < stub_sec->size))
13803 htab->stub_error = TRUE;
13804 _bfd_error_handler (_("stubs don't match calculated size"));
13807 if (htab->stub_error)
13813 *stats = bfd_malloc (500);
13814 if (*stats == NULL)
13817 len = sprintf (*stats,
13818 ngettext ("linker stubs in %u group\n",
13819 "linker stubs in %u groups\n",
13822 sprintf (*stats + len, _(" branch %lu\n"
13823 " toc adjust %lu\n"
13824 " long branch %lu\n"
13825 " long toc adj %lu\n"
13827 " plt call toc %lu\n"
13828 " global entry %lu"),
13829 htab->stub_count[ppc_stub_long_branch - 1],
13830 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13831 htab->stub_count[ppc_stub_plt_branch - 1],
13832 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13833 htab->stub_count[ppc_stub_plt_call - 1],
13834 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13835 htab->stub_count[ppc_stub_global_entry - 1]);
13840 /* What to do when ld finds relocations against symbols defined in
13841 discarded sections. */
13843 static unsigned int
13844 ppc64_elf_action_discarded (asection *sec)
13846 if (strcmp (".opd", sec->name) == 0)
13849 if (strcmp (".toc", sec->name) == 0)
13852 if (strcmp (".toc1", sec->name) == 0)
13855 return _bfd_elf_default_action_discarded (sec);
13858 /* The RELOCATE_SECTION function is called by the ELF backend linker
13859 to handle the relocations for a section.
13861 The relocs are always passed as Rela structures; if the section
13862 actually uses Rel structures, the r_addend field will always be
13865 This function is responsible for adjust the section contents as
13866 necessary, and (if using Rela relocs and generating a
13867 relocatable output file) adjusting the reloc addend as
13870 This function does not have to worry about setting the reloc
13871 address or the reloc symbol index.
13873 LOCAL_SYMS is a pointer to the swapped in local symbols.
13875 LOCAL_SECTIONS is an array giving the section in the input file
13876 corresponding to the st_shndx field of each local symbol.
13878 The global hash table entry for the global symbols can be found
13879 via elf_sym_hashes (input_bfd).
13881 When generating relocatable output, this function must handle
13882 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13883 going to be the section symbol corresponding to the output
13884 section, which means that the addend must be adjusted
13888 ppc64_elf_relocate_section (bfd *output_bfd,
13889 struct bfd_link_info *info,
13891 asection *input_section,
13892 bfd_byte *contents,
13893 Elf_Internal_Rela *relocs,
13894 Elf_Internal_Sym *local_syms,
13895 asection **local_sections)
13897 struct ppc_link_hash_table *htab;
13898 Elf_Internal_Shdr *symtab_hdr;
13899 struct elf_link_hash_entry **sym_hashes;
13900 Elf_Internal_Rela *rel;
13901 Elf_Internal_Rela *wrel;
13902 Elf_Internal_Rela *relend;
13903 Elf_Internal_Rela outrel;
13905 struct got_entry **local_got_ents;
13907 bfd_boolean ret = TRUE;
13908 bfd_boolean is_opd;
13909 /* Assume 'at' branch hints. */
13910 bfd_boolean is_isa_v2 = TRUE;
13911 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
13913 /* Initialize howto table if needed. */
13914 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13917 htab = ppc_hash_table (info);
13921 /* Don't relocate stub sections. */
13922 if (input_section->owner == htab->params->stub_bfd)
13925 BFD_ASSERT (is_ppc64_elf (input_bfd));
13927 local_got_ents = elf_local_got_ents (input_bfd);
13928 TOCstart = elf_gp (output_bfd);
13929 symtab_hdr = &elf_symtab_hdr (input_bfd);
13930 sym_hashes = elf_sym_hashes (input_bfd);
13931 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13933 rel = wrel = relocs;
13934 relend = relocs + input_section->reloc_count;
13935 for (; rel < relend; wrel++, rel++)
13937 enum elf_ppc64_reloc_type r_type;
13939 bfd_reloc_status_type r;
13940 Elf_Internal_Sym *sym;
13942 struct elf_link_hash_entry *h_elf;
13943 struct ppc_link_hash_entry *h;
13944 struct ppc_link_hash_entry *fdh;
13945 const char *sym_name;
13946 unsigned long r_symndx, toc_symndx;
13947 bfd_vma toc_addend;
13948 unsigned char tls_mask, tls_gd, tls_type;
13949 unsigned char sym_type;
13950 bfd_vma relocation;
13951 bfd_boolean unresolved_reloc, save_unresolved_reloc;
13952 bfd_boolean warned;
13953 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13956 struct ppc_stub_hash_entry *stub_entry;
13957 bfd_vma max_br_offset;
13959 Elf_Internal_Rela orig_rel;
13960 reloc_howto_type *howto;
13961 struct reloc_howto_struct alt_howto;
13966 r_type = ELF64_R_TYPE (rel->r_info);
13967 r_symndx = ELF64_R_SYM (rel->r_info);
13969 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13970 symbol of the previous ADDR64 reloc. The symbol gives us the
13971 proper TOC base to use. */
13972 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13974 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13976 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13982 unresolved_reloc = FALSE;
13985 if (r_symndx < symtab_hdr->sh_info)
13987 /* It's a local symbol. */
13988 struct _opd_sec_data *opd;
13990 sym = local_syms + r_symndx;
13991 sec = local_sections[r_symndx];
13992 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13993 sym_type = ELF64_ST_TYPE (sym->st_info);
13994 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13995 opd = get_opd_info (sec);
13996 if (opd != NULL && opd->adjust != NULL)
13998 long adjust = opd->adjust[OPD_NDX (sym->st_value
14004 /* If this is a relocation against the opd section sym
14005 and we have edited .opd, adjust the reloc addend so
14006 that ld -r and ld --emit-relocs output is correct.
14007 If it is a reloc against some other .opd symbol,
14008 then the symbol value will be adjusted later. */
14009 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
14010 rel->r_addend += adjust;
14012 relocation += adjust;
14018 bfd_boolean ignored;
14020 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
14021 r_symndx, symtab_hdr, sym_hashes,
14022 h_elf, sec, relocation,
14023 unresolved_reloc, warned, ignored);
14024 sym_name = h_elf->root.root.string;
14025 sym_type = h_elf->type;
14027 && sec->owner == output_bfd
14028 && strcmp (sec->name, ".opd") == 0)
14030 /* This is a symbol defined in a linker script. All
14031 such are defined in output sections, even those
14032 defined by simple assignment from a symbol defined in
14033 an input section. Transfer the symbol to an
14034 appropriate input .opd section, so that a branch to
14035 this symbol will be mapped to the location specified
14036 by the opd entry. */
14037 struct bfd_link_order *lo;
14038 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
14039 if (lo->type == bfd_indirect_link_order)
14041 asection *isec = lo->u.indirect.section;
14042 if (h_elf->root.u.def.value >= isec->output_offset
14043 && h_elf->root.u.def.value < (isec->output_offset
14046 h_elf->root.u.def.value -= isec->output_offset;
14047 h_elf->root.u.def.section = isec;
14054 h = (struct ppc_link_hash_entry *) h_elf;
14056 if (sec != NULL && discarded_section (sec))
14058 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
14059 input_bfd, input_section,
14060 contents + rel->r_offset);
14061 wrel->r_offset = rel->r_offset;
14063 wrel->r_addend = 0;
14065 /* For ld -r, remove relocations in debug sections against
14066 symbols defined in discarded sections. Not done for
14067 non-debug to preserve relocs in .eh_frame which the
14068 eh_frame editing code expects to be present. */
14069 if (bfd_link_relocatable (info)
14070 && (input_section->flags & SEC_DEBUGGING))
14076 if (bfd_link_relocatable (info))
14079 if (h != NULL && &h->elf == htab->elf.hgot)
14081 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
14082 sec = bfd_abs_section_ptr;
14083 unresolved_reloc = FALSE;
14086 /* TLS optimizations. Replace instruction sequences and relocs
14087 based on information we collected in tls_optimize. We edit
14088 RELOCS so that --emit-relocs will output something sensible
14089 for the final instruction stream. */
14094 tls_mask = h->tls_mask;
14095 else if (local_got_ents != NULL)
14097 struct plt_entry **local_plt = (struct plt_entry **)
14098 (local_got_ents + symtab_hdr->sh_info);
14099 unsigned char *lgot_masks = (unsigned char *)
14100 (local_plt + symtab_hdr->sh_info);
14101 tls_mask = lgot_masks[r_symndx];
14103 if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK))
14104 && (r_type == R_PPC64_TLS
14105 || r_type == R_PPC64_TLSGD
14106 || r_type == R_PPC64_TLSLD))
14108 /* Check for toc tls entries. */
14109 unsigned char *toc_tls;
14111 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
14112 &local_syms, rel, input_bfd))
14116 tls_mask = *toc_tls;
14119 /* Check that tls relocs are used with tls syms, and non-tls
14120 relocs are used with non-tls syms. */
14121 if (r_symndx != STN_UNDEF
14122 && r_type != R_PPC64_NONE
14124 || h->elf.root.type == bfd_link_hash_defined
14125 || h->elf.root.type == bfd_link_hash_defweak)
14126 && (IS_PPC64_TLS_RELOC (r_type)
14127 != (sym_type == STT_TLS
14128 || (sym_type == STT_SECTION
14129 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
14131 if ((tls_mask & TLS_TLS) != 0
14132 && (r_type == R_PPC64_TLS
14133 || r_type == R_PPC64_TLSGD
14134 || r_type == R_PPC64_TLSLD))
14135 /* R_PPC64_TLS is OK against a symbol in the TOC. */
14138 info->callbacks->einfo
14139 (!IS_PPC64_TLS_RELOC (r_type)
14140 /* xgettext:c-format */
14141 ? _("%H: %s used with TLS symbol `%pT'\n")
14142 /* xgettext:c-format */
14143 : _("%H: %s used with non-TLS symbol `%pT'\n"),
14144 input_bfd, input_section, rel->r_offset,
14145 ppc64_elf_howto_table[r_type]->name,
14149 /* Ensure reloc mapping code below stays sane. */
14150 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
14151 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
14152 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
14153 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
14154 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
14155 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
14156 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
14157 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
14158 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
14159 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
14167 case R_PPC64_LO_DS_OPT:
14168 insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset);
14169 if ((insn & (0x3f << 26)) != 58u << 26)
14171 insn += (14u << 26) - (58u << 26);
14172 bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset);
14173 r_type = R_PPC64_TOC16_LO;
14174 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14177 case R_PPC64_TOC16:
14178 case R_PPC64_TOC16_LO:
14179 case R_PPC64_TOC16_DS:
14180 case R_PPC64_TOC16_LO_DS:
14182 /* Check for toc tls entries. */
14183 unsigned char *toc_tls;
14186 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
14187 &local_syms, rel, input_bfd);
14193 tls_mask = *toc_tls;
14194 if (r_type == R_PPC64_TOC16_DS
14195 || r_type == R_PPC64_TOC16_LO_DS)
14197 if ((tls_mask & TLS_TLS) != 0
14198 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
14203 /* If we found a GD reloc pair, then we might be
14204 doing a GD->IE transition. */
14207 tls_gd = TLS_TPRELGD;
14208 if ((tls_mask & TLS_TLS) != 0
14209 && (tls_mask & TLS_GD) == 0)
14212 else if (retval == 3)
14214 if ((tls_mask & TLS_TLS) != 0
14215 && (tls_mask & TLS_LD) == 0)
14223 case R_PPC64_GOT_TPREL16_HI:
14224 case R_PPC64_GOT_TPREL16_HA:
14225 if ((tls_mask & TLS_TLS) != 0
14226 && (tls_mask & TLS_TPREL) == 0)
14228 rel->r_offset -= d_offset;
14229 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14230 r_type = R_PPC64_NONE;
14231 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14235 case R_PPC64_GOT_TPREL16_DS:
14236 case R_PPC64_GOT_TPREL16_LO_DS:
14237 if ((tls_mask & TLS_TLS) != 0
14238 && (tls_mask & TLS_TPREL) == 0)
14241 insn = bfd_get_32 (input_bfd,
14242 contents + rel->r_offset - d_offset);
14244 insn |= 0x3c0d0000; /* addis 0,13,0 */
14245 bfd_put_32 (input_bfd, insn,
14246 contents + rel->r_offset - d_offset);
14247 r_type = R_PPC64_TPREL16_HA;
14248 if (toc_symndx != 0)
14250 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
14251 rel->r_addend = toc_addend;
14252 /* We changed the symbol. Start over in order to
14253 get h, sym, sec etc. right. */
14257 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14262 if ((tls_mask & TLS_TLS) != 0
14263 && (tls_mask & TLS_TPREL) == 0)
14265 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14266 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
14269 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14270 /* Was PPC64_TLS which sits on insn boundary, now
14271 PPC64_TPREL16_LO which is at low-order half-word. */
14272 rel->r_offset += d_offset;
14273 r_type = R_PPC64_TPREL16_LO;
14274 if (toc_symndx != 0)
14276 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
14277 rel->r_addend = toc_addend;
14278 /* We changed the symbol. Start over in order to
14279 get h, sym, sec etc. right. */
14283 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14287 case R_PPC64_GOT_TLSGD16_HI:
14288 case R_PPC64_GOT_TLSGD16_HA:
14289 tls_gd = TLS_TPRELGD;
14290 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
14294 case R_PPC64_GOT_TLSLD16_HI:
14295 case R_PPC64_GOT_TLSLD16_HA:
14296 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
14299 if ((tls_mask & tls_gd) != 0)
14300 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
14301 + R_PPC64_GOT_TPREL16_DS);
14304 rel->r_offset -= d_offset;
14305 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14306 r_type = R_PPC64_NONE;
14308 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14312 case R_PPC64_GOT_TLSGD16:
14313 case R_PPC64_GOT_TLSGD16_LO:
14314 tls_gd = TLS_TPRELGD;
14315 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
14319 case R_PPC64_GOT_TLSLD16:
14320 case R_PPC64_GOT_TLSLD16_LO:
14321 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
14323 unsigned int insn1, insn2;
14327 offset = (bfd_vma) -1;
14328 /* If not using the newer R_PPC64_TLSGD/LD to mark
14329 __tls_get_addr calls, we must trust that the call
14330 stays with its arg setup insns, ie. that the next
14331 reloc is the __tls_get_addr call associated with
14332 the current reloc. Edit both insns. */
14333 if (input_section->has_tls_get_addr_call
14334 && rel + 1 < relend
14335 && branch_reloc_hash_match (input_bfd, rel + 1,
14336 htab->tls_get_addr,
14337 htab->tls_get_addr_fd))
14338 offset = rel[1].r_offset;
14339 /* We read the low GOT_TLS (or TOC16) insn because we
14340 need to keep the destination reg. It may be
14341 something other than the usual r3, and moved to r3
14342 before the call by intervening code. */
14343 insn1 = bfd_get_32 (input_bfd,
14344 contents + rel->r_offset - d_offset);
14345 if ((tls_mask & tls_gd) != 0)
14348 insn1 &= (0x1f << 21) | (0x1f << 16);
14349 insn1 |= 58 << 26; /* ld */
14350 insn2 = 0x7c636a14; /* add 3,3,13 */
14351 if (offset != (bfd_vma) -1)
14352 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14353 if ((tls_mask & TLS_EXPLICIT) == 0)
14354 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
14355 + R_PPC64_GOT_TPREL16_DS);
14357 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
14358 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14363 insn1 &= 0x1f << 21;
14364 insn1 |= 0x3c0d0000; /* addis r,13,0 */
14365 insn2 = 0x38630000; /* addi 3,3,0 */
14368 /* Was an LD reloc. */
14370 sec = local_sections[toc_symndx];
14372 r_symndx < symtab_hdr->sh_info;
14374 if (local_sections[r_symndx] == sec)
14376 if (r_symndx >= symtab_hdr->sh_info)
14377 r_symndx = STN_UNDEF;
14378 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
14379 if (r_symndx != STN_UNDEF)
14380 rel->r_addend -= (local_syms[r_symndx].st_value
14381 + sec->output_offset
14382 + sec->output_section->vma);
14384 else if (toc_symndx != 0)
14386 r_symndx = toc_symndx;
14387 rel->r_addend = toc_addend;
14389 r_type = R_PPC64_TPREL16_HA;
14390 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14391 if (offset != (bfd_vma) -1)
14393 rel[1].r_info = ELF64_R_INFO (r_symndx,
14394 R_PPC64_TPREL16_LO);
14395 rel[1].r_offset = offset + d_offset;
14396 rel[1].r_addend = rel->r_addend;
14399 bfd_put_32 (input_bfd, insn1,
14400 contents + rel->r_offset - d_offset);
14401 if (offset != (bfd_vma) -1)
14402 bfd_put_32 (input_bfd, insn2, contents + offset);
14403 if ((tls_mask & tls_gd) == 0
14404 && (tls_gd == 0 || toc_symndx != 0))
14406 /* We changed the symbol. Start over in order
14407 to get h, sym, sec etc. right. */
14413 case R_PPC64_TLSGD:
14414 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
14415 && rel + 1 < relend)
14417 unsigned int insn2;
14418 bfd_vma offset = rel->r_offset;
14420 if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info)))
14422 bfd_put_32 (output_bfd, NOP, contents + offset);
14423 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14427 if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL)
14428 bfd_put_32 (output_bfd, NOP, contents + offset + 4);
14430 if ((tls_mask & TLS_TPRELGD) != 0)
14433 r_type = R_PPC64_NONE;
14434 insn2 = 0x7c636a14; /* add 3,3,13 */
14439 if (toc_symndx != 0)
14441 r_symndx = toc_symndx;
14442 rel->r_addend = toc_addend;
14444 r_type = R_PPC64_TPREL16_LO;
14445 rel->r_offset = offset + d_offset;
14446 insn2 = 0x38630000; /* addi 3,3,0 */
14448 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14449 /* Zap the reloc on the _tls_get_addr call too. */
14450 BFD_ASSERT (offset == rel[1].r_offset);
14451 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14452 bfd_put_32 (input_bfd, insn2, contents + offset);
14453 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
14458 case R_PPC64_TLSLD:
14459 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
14460 && rel + 1 < relend)
14462 unsigned int insn2;
14463 bfd_vma offset = rel->r_offset;
14465 if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info)))
14467 bfd_put_32 (output_bfd, NOP, contents + offset);
14468 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14472 if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL)
14473 bfd_put_32 (output_bfd, NOP, contents + offset + 4);
14476 sec = local_sections[toc_symndx];
14478 r_symndx < symtab_hdr->sh_info;
14480 if (local_sections[r_symndx] == sec)
14482 if (r_symndx >= symtab_hdr->sh_info)
14483 r_symndx = STN_UNDEF;
14484 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
14485 if (r_symndx != STN_UNDEF)
14486 rel->r_addend -= (local_syms[r_symndx].st_value
14487 + sec->output_offset
14488 + sec->output_section->vma);
14490 r_type = R_PPC64_TPREL16_LO;
14491 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14492 rel->r_offset = offset + d_offset;
14493 /* Zap the reloc on the _tls_get_addr call too. */
14494 BFD_ASSERT (offset == rel[1].r_offset);
14495 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14496 insn2 = 0x38630000; /* addi 3,3,0 */
14497 bfd_put_32 (input_bfd, insn2, contents + offset);
14502 case R_PPC64_DTPMOD64:
14503 if (rel + 1 < relend
14504 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
14505 && rel[1].r_offset == rel->r_offset + 8)
14507 if ((tls_mask & TLS_GD) == 0)
14509 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
14510 if ((tls_mask & TLS_TPRELGD) != 0)
14511 r_type = R_PPC64_TPREL64;
14514 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14515 r_type = R_PPC64_NONE;
14517 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14522 if ((tls_mask & TLS_LD) == 0)
14524 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14525 r_type = R_PPC64_NONE;
14526 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14531 case R_PPC64_TPREL64:
14532 if ((tls_mask & TLS_TPREL) == 0)
14534 r_type = R_PPC64_NONE;
14535 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14539 case R_PPC64_ENTRY:
14540 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
14541 if (!bfd_link_pic (info)
14542 && !info->traditional_format
14543 && relocation + 0x80008000 <= 0xffffffff)
14545 unsigned int insn1, insn2;
14547 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14548 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14549 if ((insn1 & ~0xfffc) == LD_R2_0R12
14550 && insn2 == ADD_R2_R2_R12)
14552 bfd_put_32 (input_bfd,
14553 LIS_R2 + PPC_HA (relocation),
14554 contents + rel->r_offset);
14555 bfd_put_32 (input_bfd,
14556 ADDI_R2_R2 + PPC_LO (relocation),
14557 contents + rel->r_offset + 4);
14562 relocation -= (rel->r_offset
14563 + input_section->output_offset
14564 + input_section->output_section->vma);
14565 if (relocation + 0x80008000 <= 0xffffffff)
14567 unsigned int insn1, insn2;
14569 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14570 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14571 if ((insn1 & ~0xfffc) == LD_R2_0R12
14572 && insn2 == ADD_R2_R2_R12)
14574 bfd_put_32 (input_bfd,
14575 ADDIS_R2_R12 + PPC_HA (relocation),
14576 contents + rel->r_offset);
14577 bfd_put_32 (input_bfd,
14578 ADDI_R2_R2 + PPC_LO (relocation),
14579 contents + rel->r_offset + 4);
14585 case R_PPC64_REL16_HA:
14586 /* If we are generating a non-PIC executable, edit
14587 . 0: addis 2,12,.TOC.-0b@ha
14588 . addi 2,2,.TOC.-0b@l
14589 used by ELFv2 global entry points to set up r2, to
14592 if .TOC. is in range. */
14593 if (!bfd_link_pic (info)
14594 && !info->traditional_format
14596 && rel->r_addend == d_offset
14597 && h != NULL && &h->elf == htab->elf.hgot
14598 && rel + 1 < relend
14599 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14600 && rel[1].r_offset == rel->r_offset + 4
14601 && rel[1].r_addend == rel->r_addend + 4
14602 && relocation + 0x80008000 <= 0xffffffff)
14604 unsigned int insn1, insn2;
14605 bfd_vma offset = rel->r_offset - d_offset;
14606 insn1 = bfd_get_32 (input_bfd, contents + offset);
14607 insn2 = bfd_get_32 (input_bfd, contents + offset + 4);
14608 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14609 && (insn2 & 0xffff0000) == ADDI_R2_R2)
14611 r_type = R_PPC64_ADDR16_HA;
14612 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14613 rel->r_addend -= d_offset;
14614 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14615 rel[1].r_addend -= d_offset + 4;
14616 bfd_put_32 (input_bfd, LIS_R2, contents + offset);
14622 /* Handle other relocations that tweak non-addend part of insn. */
14624 max_br_offset = 1 << 25;
14625 addend = rel->r_addend;
14626 reloc_dest = DEST_NORMAL;
14632 case R_PPC64_TOCSAVE:
14633 if (relocation + addend == (rel->r_offset
14634 + input_section->output_offset
14635 + input_section->output_section->vma)
14636 && tocsave_find (htab, NO_INSERT,
14637 &local_syms, rel, input_bfd))
14639 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14641 || insn == CROR_151515 || insn == CROR_313131)
14642 bfd_put_32 (input_bfd,
14643 STD_R2_0R1 + STK_TOC (htab),
14644 contents + rel->r_offset);
14648 /* Branch taken prediction relocations. */
14649 case R_PPC64_ADDR14_BRTAKEN:
14650 case R_PPC64_REL14_BRTAKEN:
14651 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14652 /* Fall through. */
14654 /* Branch not taken prediction relocations. */
14655 case R_PPC64_ADDR14_BRNTAKEN:
14656 case R_PPC64_REL14_BRNTAKEN:
14657 insn |= bfd_get_32 (input_bfd,
14658 contents + rel->r_offset) & ~(0x01 << 21);
14659 /* Fall through. */
14661 case R_PPC64_REL14:
14662 max_br_offset = 1 << 15;
14663 /* Fall through. */
14665 case R_PPC64_REL24:
14666 case R_PPC64_PLTCALL:
14667 /* Calls to functions with a different TOC, such as calls to
14668 shared objects, need to alter the TOC pointer. This is
14669 done using a linkage stub. A REL24 branching to these
14670 linkage stubs needs to be followed by a nop, as the nop
14671 will be replaced with an instruction to restore the TOC
14676 && h->oh->is_func_descriptor)
14677 fdh = ppc_follow_link (h->oh);
14678 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14680 if (r_type == R_PPC64_PLTCALL
14681 && stub_entry != NULL
14682 && (stub_entry->stub_type == ppc_stub_plt_call
14683 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14686 if (stub_entry != NULL
14687 && (stub_entry->stub_type == ppc_stub_plt_call
14688 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14689 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14690 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14692 bfd_boolean can_plt_call = FALSE;
14694 if (stub_entry->stub_type == ppc_stub_plt_call
14696 && htab->params->plt_localentry0 != 0
14697 && is_elfv2_localentry0 (&h->elf))
14699 /* The function doesn't use or change r2. */
14700 can_plt_call = TRUE;
14703 /* All of these stubs may modify r2, so there must be a
14704 branch and link followed by a nop. The nop is
14705 replaced by an insn to restore r2. */
14706 else if (rel->r_offset + 8 <= input_section->size)
14710 br = bfd_get_32 (input_bfd,
14711 contents + rel->r_offset);
14716 nop = bfd_get_32 (input_bfd,
14717 contents + rel->r_offset + 4);
14718 if (nop == LD_R2_0R1 + STK_TOC (htab))
14719 can_plt_call = TRUE;
14720 else if (nop == NOP
14721 || nop == CROR_151515
14722 || nop == CROR_313131)
14725 && (h == htab->tls_get_addr_fd
14726 || h == htab->tls_get_addr)
14727 && htab->params->tls_get_addr_opt)
14729 /* Special stub used, leave nop alone. */
14732 bfd_put_32 (input_bfd,
14733 LD_R2_0R1 + STK_TOC (htab),
14734 contents + rel->r_offset + 4);
14735 can_plt_call = TRUE;
14740 if (!can_plt_call && h != NULL)
14742 const char *name = h->elf.root.root.string;
14747 if (strncmp (name, "__libc_start_main", 17) == 0
14748 && (name[17] == 0 || name[17] == '@'))
14750 /* Allow crt1 branch to go via a toc adjusting
14751 stub. Other calls that never return could do
14752 the same, if we could detect such. */
14753 can_plt_call = TRUE;
14759 /* g++ as of 20130507 emits self-calls without a
14760 following nop. This is arguably wrong since we
14761 have conflicting information. On the one hand a
14762 global symbol and on the other a local call
14763 sequence, but don't error for this special case.
14764 It isn't possible to cheaply verify we have
14765 exactly such a call. Allow all calls to the same
14767 asection *code_sec = sec;
14769 if (get_opd_info (sec) != NULL)
14771 bfd_vma off = (relocation + addend
14772 - sec->output_section->vma
14773 - sec->output_offset);
14775 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14777 if (code_sec == input_section)
14778 can_plt_call = TRUE;
14783 if (stub_entry->stub_type == ppc_stub_plt_call
14784 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14785 info->callbacks->einfo
14786 /* xgettext:c-format */
14787 (_("%H: call to `%pT' lacks nop, can't restore toc; "
14788 "recompile with -fPIC\n"),
14789 input_bfd, input_section, rel->r_offset, sym_name);
14791 info->callbacks->einfo
14792 /* xgettext:c-format */
14793 (_("%H: call to `%pT' lacks nop, can't restore toc; "
14794 "(-mcmodel=small toc adjust stub)\n"),
14795 input_bfd, input_section, rel->r_offset, sym_name);
14797 bfd_set_error (bfd_error_bad_value);
14802 && (stub_entry->stub_type == ppc_stub_plt_call
14803 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14804 unresolved_reloc = FALSE;
14807 if ((stub_entry == NULL
14808 || stub_entry->stub_type == ppc_stub_long_branch
14809 || stub_entry->stub_type == ppc_stub_plt_branch)
14810 && get_opd_info (sec) != NULL)
14812 /* The branch destination is the value of the opd entry. */
14813 bfd_vma off = (relocation + addend
14814 - sec->output_section->vma
14815 - sec->output_offset);
14816 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14817 if (dest != (bfd_vma) -1)
14821 reloc_dest = DEST_OPD;
14825 /* If the branch is out of reach we ought to have a long
14827 from = (rel->r_offset
14828 + input_section->output_offset
14829 + input_section->output_section->vma);
14831 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14835 if (stub_entry != NULL
14836 && (stub_entry->stub_type == ppc_stub_long_branch
14837 || stub_entry->stub_type == ppc_stub_plt_branch)
14838 && (r_type == R_PPC64_ADDR14_BRTAKEN
14839 || r_type == R_PPC64_ADDR14_BRNTAKEN
14840 || (relocation + addend - from + max_br_offset
14841 < 2 * max_br_offset)))
14842 /* Don't use the stub if this branch is in range. */
14845 if (stub_entry != NULL)
14847 /* Munge up the value and addend so that we call the stub
14848 rather than the procedure directly. */
14849 asection *stub_sec = stub_entry->group->stub_sec;
14851 if (stub_entry->stub_type == ppc_stub_save_res)
14852 relocation += (stub_sec->output_offset
14853 + stub_sec->output_section->vma
14854 + stub_sec->size - htab->sfpr->size
14855 - htab->sfpr->output_offset
14856 - htab->sfpr->output_section->vma);
14858 relocation = (stub_entry->stub_offset
14859 + stub_sec->output_offset
14860 + stub_sec->output_section->vma);
14862 reloc_dest = DEST_STUB;
14864 if ((stub_entry->stub_type == ppc_stub_plt_call
14865 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14866 && (ALWAYS_EMIT_R2SAVE
14867 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14868 && rel + 1 < relend
14869 && rel[1].r_offset == rel->r_offset + 4
14870 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14878 /* Set 'a' bit. This is 0b00010 in BO field for branch
14879 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14880 for branch on CTR insns (BO == 1a00t or 1a01t). */
14881 if ((insn & (0x14 << 21)) == (0x04 << 21))
14882 insn |= 0x02 << 21;
14883 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14884 insn |= 0x08 << 21;
14890 /* Invert 'y' bit if not the default. */
14891 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14892 insn ^= 0x01 << 21;
14895 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14898 /* NOP out calls to undefined weak functions.
14899 We can thus call a weak function without first
14900 checking whether the function is defined. */
14902 && h->elf.root.type == bfd_link_hash_undefweak
14903 && h->elf.dynindx == -1
14904 && r_type == R_PPC64_REL24
14908 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14914 /* Set `addend'. */
14916 save_unresolved_reloc = unresolved_reloc;
14920 /* xgettext:c-format */
14921 _bfd_error_handler (_("%pB: %s unsupported"),
14922 input_bfd, ppc64_elf_howto_table[r_type]->name);
14924 bfd_set_error (bfd_error_bad_value);
14930 case R_PPC64_TLSGD:
14931 case R_PPC64_TLSLD:
14932 case R_PPC64_TOCSAVE:
14933 case R_PPC64_GNU_VTINHERIT:
14934 case R_PPC64_GNU_VTENTRY:
14935 case R_PPC64_ENTRY:
14938 /* GOT16 relocations. Like an ADDR16 using the symbol's
14939 address in the GOT as relocation value instead of the
14940 symbol's value itself. Also, create a GOT entry for the
14941 symbol and put the symbol value there. */
14942 case R_PPC64_GOT_TLSGD16:
14943 case R_PPC64_GOT_TLSGD16_LO:
14944 case R_PPC64_GOT_TLSGD16_HI:
14945 case R_PPC64_GOT_TLSGD16_HA:
14946 tls_type = TLS_TLS | TLS_GD;
14949 case R_PPC64_GOT_TLSLD16:
14950 case R_PPC64_GOT_TLSLD16_LO:
14951 case R_PPC64_GOT_TLSLD16_HI:
14952 case R_PPC64_GOT_TLSLD16_HA:
14953 tls_type = TLS_TLS | TLS_LD;
14956 case R_PPC64_GOT_TPREL16_DS:
14957 case R_PPC64_GOT_TPREL16_LO_DS:
14958 case R_PPC64_GOT_TPREL16_HI:
14959 case R_PPC64_GOT_TPREL16_HA:
14960 tls_type = TLS_TLS | TLS_TPREL;
14963 case R_PPC64_GOT_DTPREL16_DS:
14964 case R_PPC64_GOT_DTPREL16_LO_DS:
14965 case R_PPC64_GOT_DTPREL16_HI:
14966 case R_PPC64_GOT_DTPREL16_HA:
14967 tls_type = TLS_TLS | TLS_DTPREL;
14970 case R_PPC64_GOT16:
14971 case R_PPC64_GOT16_LO:
14972 case R_PPC64_GOT16_HI:
14973 case R_PPC64_GOT16_HA:
14974 case R_PPC64_GOT16_DS:
14975 case R_PPC64_GOT16_LO_DS:
14978 /* Relocation is to the entry for this symbol in the global
14983 unsigned long indx = 0;
14984 struct got_entry *ent;
14986 if (tls_type == (TLS_TLS | TLS_LD)
14988 || !h->elf.def_dynamic))
14989 ent = ppc64_tlsld_got (input_bfd);
14994 if (!htab->elf.dynamic_sections_created
14995 || h->elf.dynindx == -1
14996 || SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14997 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf))
14998 /* This is actually a static link, or it is a
14999 -Bsymbolic link and the symbol is defined
15000 locally, or the symbol was forced to be local
15001 because of a version file. */
15005 indx = h->elf.dynindx;
15006 unresolved_reloc = FALSE;
15008 ent = h->elf.got.glist;
15012 if (local_got_ents == NULL)
15014 ent = local_got_ents[r_symndx];
15017 for (; ent != NULL; ent = ent->next)
15018 if (ent->addend == orig_rel.r_addend
15019 && ent->owner == input_bfd
15020 && ent->tls_type == tls_type)
15026 if (ent->is_indirect)
15027 ent = ent->got.ent;
15028 offp = &ent->got.offset;
15029 got = ppc64_elf_tdata (ent->owner)->got;
15033 /* The offset must always be a multiple of 8. We use the
15034 least significant bit to record whether we have already
15035 processed this entry. */
15037 if ((off & 1) != 0)
15041 /* Generate relocs for the dynamic linker, except in
15042 the case of TLSLD where we'll use one entry per
15050 ? h->elf.type == STT_GNU_IFUNC
15051 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
15054 relgot = htab->elf.irelplt;
15056 htab->local_ifunc_resolver = 1;
15057 else if (is_static_defined (&h->elf))
15058 htab->maybe_local_ifunc_resolver = 1;
15061 || (bfd_link_pic (info)
15063 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)
15064 || (tls_type == (TLS_TLS | TLS_LD)
15065 && !h->elf.def_dynamic))
15066 && !(tls_type == (TLS_TLS | TLS_TPREL)
15067 && bfd_link_executable (info)
15068 && SYMBOL_REFERENCES_LOCAL (info, &h->elf))))
15069 relgot = ppc64_elf_tdata (ent->owner)->relgot;
15070 if (relgot != NULL)
15072 outrel.r_offset = (got->output_section->vma
15073 + got->output_offset
15075 outrel.r_addend = addend;
15076 if (tls_type & (TLS_LD | TLS_GD))
15078 outrel.r_addend = 0;
15079 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
15080 if (tls_type == (TLS_TLS | TLS_GD))
15082 loc = relgot->contents;
15083 loc += (relgot->reloc_count++
15084 * sizeof (Elf64_External_Rela));
15085 bfd_elf64_swap_reloca_out (output_bfd,
15087 outrel.r_offset += 8;
15088 outrel.r_addend = addend;
15090 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
15093 else if (tls_type == (TLS_TLS | TLS_DTPREL))
15094 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
15095 else if (tls_type == (TLS_TLS | TLS_TPREL))
15096 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
15097 else if (indx != 0)
15098 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
15102 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15104 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
15106 /* Write the .got section contents for the sake
15108 loc = got->contents + off;
15109 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
15113 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
15115 outrel.r_addend += relocation;
15116 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
15118 if (htab->elf.tls_sec == NULL)
15119 outrel.r_addend = 0;
15121 outrel.r_addend -= htab->elf.tls_sec->vma;
15124 loc = relgot->contents;
15125 loc += (relgot->reloc_count++
15126 * sizeof (Elf64_External_Rela));
15127 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
15130 /* Init the .got section contents here if we're not
15131 emitting a reloc. */
15134 relocation += addend;
15137 if (htab->elf.tls_sec == NULL)
15141 if (tls_type & TLS_LD)
15144 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
15145 if (tls_type & TLS_TPREL)
15146 relocation += DTP_OFFSET - TP_OFFSET;
15149 if (tls_type & (TLS_GD | TLS_LD))
15151 bfd_put_64 (output_bfd, relocation,
15152 got->contents + off + 8);
15156 bfd_put_64 (output_bfd, relocation,
15157 got->contents + off);
15161 if (off >= (bfd_vma) -2)
15164 relocation = got->output_section->vma + got->output_offset + off;
15165 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
15169 case R_PPC64_PLT16_HA:
15170 case R_PPC64_PLT16_HI:
15171 case R_PPC64_PLT16_LO:
15172 case R_PPC64_PLT16_LO_DS:
15173 case R_PPC64_PLT32:
15174 case R_PPC64_PLT64:
15175 case R_PPC64_PLTSEQ:
15176 case R_PPC64_PLTCALL:
15177 /* Relocation is to the entry for this symbol in the
15178 procedure linkage table. */
15179 unresolved_reloc = TRUE;
15181 struct plt_entry **plt_list = NULL;
15183 plt_list = &h->elf.plt.plist;
15184 else if (local_got_ents != NULL)
15186 struct plt_entry **local_plt = (struct plt_entry **)
15187 (local_got_ents + symtab_hdr->sh_info);
15188 plt_list = local_plt + r_symndx;
15192 struct plt_entry *ent;
15194 for (ent = *plt_list; ent != NULL; ent = ent->next)
15195 if (ent->plt.offset != (bfd_vma) -1
15196 && ent->addend == orig_rel.r_addend)
15201 plt = htab->elf.splt;
15202 if (!htab->elf.dynamic_sections_created
15204 || h->elf.dynindx == -1)
15207 ? h->elf.type == STT_GNU_IFUNC
15208 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15209 plt = htab->elf.iplt;
15211 plt = htab->pltlocal;
15213 relocation = (plt->output_section->vma
15214 + plt->output_offset
15215 + ent->plt.offset);
15216 if (r_type == R_PPC64_PLT16_HA
15217 || r_type ==R_PPC64_PLT16_HI
15218 || r_type ==R_PPC64_PLT16_LO
15219 || r_type ==R_PPC64_PLT16_LO_DS)
15221 got = (elf_gp (output_bfd)
15222 + htab->sec_info[input_section->id].toc_off);
15226 unresolved_reloc = FALSE;
15234 /* Relocation value is TOC base. */
15235 relocation = TOCstart;
15236 if (r_symndx == STN_UNDEF)
15237 relocation += htab->sec_info[input_section->id].toc_off;
15238 else if (unresolved_reloc)
15240 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
15241 relocation += htab->sec_info[sec->id].toc_off;
15243 unresolved_reloc = TRUE;
15246 /* TOC16 relocs. We want the offset relative to the TOC base,
15247 which is the address of the start of the TOC plus 0x8000.
15248 The TOC consists of sections .got, .toc, .tocbss, and .plt,
15250 case R_PPC64_TOC16:
15251 case R_PPC64_TOC16_LO:
15252 case R_PPC64_TOC16_HI:
15253 case R_PPC64_TOC16_DS:
15254 case R_PPC64_TOC16_LO_DS:
15255 case R_PPC64_TOC16_HA:
15256 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
15259 /* Relocate against the beginning of the section. */
15260 case R_PPC64_SECTOFF:
15261 case R_PPC64_SECTOFF_LO:
15262 case R_PPC64_SECTOFF_HI:
15263 case R_PPC64_SECTOFF_DS:
15264 case R_PPC64_SECTOFF_LO_DS:
15265 case R_PPC64_SECTOFF_HA:
15267 addend -= sec->output_section->vma;
15270 case R_PPC64_REL16:
15271 case R_PPC64_REL16_LO:
15272 case R_PPC64_REL16_HI:
15273 case R_PPC64_REL16_HA:
15274 case R_PPC64_REL16DX_HA:
15277 case R_PPC64_REL14:
15278 case R_PPC64_REL14_BRNTAKEN:
15279 case R_PPC64_REL14_BRTAKEN:
15280 case R_PPC64_REL24:
15283 case R_PPC64_TPREL16:
15284 case R_PPC64_TPREL16_LO:
15285 case R_PPC64_TPREL16_HI:
15286 case R_PPC64_TPREL16_HA:
15287 case R_PPC64_TPREL16_DS:
15288 case R_PPC64_TPREL16_LO_DS:
15289 case R_PPC64_TPREL16_HIGH:
15290 case R_PPC64_TPREL16_HIGHA:
15291 case R_PPC64_TPREL16_HIGHER:
15292 case R_PPC64_TPREL16_HIGHERA:
15293 case R_PPC64_TPREL16_HIGHEST:
15294 case R_PPC64_TPREL16_HIGHESTA:
15296 && h->elf.root.type == bfd_link_hash_undefweak
15297 && h->elf.dynindx == -1)
15299 /* Make this relocation against an undefined weak symbol
15300 resolve to zero. This is really just a tweak, since
15301 code using weak externs ought to check that they are
15302 defined before using them. */
15303 bfd_byte *p = contents + rel->r_offset - d_offset;
15305 insn = bfd_get_32 (input_bfd, p);
15306 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
15308 bfd_put_32 (input_bfd, insn, p);
15311 if (htab->elf.tls_sec != NULL)
15312 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
15313 /* The TPREL16 relocs shouldn't really be used in shared
15314 libs or with non-local symbols as that will result in
15315 DT_TEXTREL being set, but support them anyway. */
15318 case R_PPC64_DTPREL16:
15319 case R_PPC64_DTPREL16_LO:
15320 case R_PPC64_DTPREL16_HI:
15321 case R_PPC64_DTPREL16_HA:
15322 case R_PPC64_DTPREL16_DS:
15323 case R_PPC64_DTPREL16_LO_DS:
15324 case R_PPC64_DTPREL16_HIGH:
15325 case R_PPC64_DTPREL16_HIGHA:
15326 case R_PPC64_DTPREL16_HIGHER:
15327 case R_PPC64_DTPREL16_HIGHERA:
15328 case R_PPC64_DTPREL16_HIGHEST:
15329 case R_PPC64_DTPREL16_HIGHESTA:
15330 if (htab->elf.tls_sec != NULL)
15331 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
15334 case R_PPC64_ADDR64_LOCAL:
15335 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
15340 case R_PPC64_DTPMOD64:
15345 case R_PPC64_TPREL64:
15346 if (htab->elf.tls_sec != NULL)
15347 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
15350 case R_PPC64_DTPREL64:
15351 if (htab->elf.tls_sec != NULL)
15352 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
15353 /* Fall through. */
15355 /* Relocations that may need to be propagated if this is a
15357 case R_PPC64_REL30:
15358 case R_PPC64_REL32:
15359 case R_PPC64_REL64:
15360 case R_PPC64_ADDR14:
15361 case R_PPC64_ADDR14_BRNTAKEN:
15362 case R_PPC64_ADDR14_BRTAKEN:
15363 case R_PPC64_ADDR16:
15364 case R_PPC64_ADDR16_DS:
15365 case R_PPC64_ADDR16_HA:
15366 case R_PPC64_ADDR16_HI:
15367 case R_PPC64_ADDR16_HIGH:
15368 case R_PPC64_ADDR16_HIGHA:
15369 case R_PPC64_ADDR16_HIGHER:
15370 case R_PPC64_ADDR16_HIGHERA:
15371 case R_PPC64_ADDR16_HIGHEST:
15372 case R_PPC64_ADDR16_HIGHESTA:
15373 case R_PPC64_ADDR16_LO:
15374 case R_PPC64_ADDR16_LO_DS:
15375 case R_PPC64_ADDR24:
15376 case R_PPC64_ADDR32:
15377 case R_PPC64_ADDR64:
15378 case R_PPC64_UADDR16:
15379 case R_PPC64_UADDR32:
15380 case R_PPC64_UADDR64:
15382 if ((input_section->flags & SEC_ALLOC) == 0)
15385 if (NO_OPD_RELOCS && is_opd)
15388 if (bfd_link_pic (info)
15390 || h->dyn_relocs != NULL)
15391 && ((h != NULL && pc_dynrelocs (h))
15392 || must_be_dyn_reloc (info, r_type)))
15394 ? h->dyn_relocs != NULL
15395 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
15397 bfd_boolean skip, relocate;
15402 /* When generating a dynamic object, these relocations
15403 are copied into the output file to be resolved at run
15409 out_off = _bfd_elf_section_offset (output_bfd, info,
15410 input_section, rel->r_offset);
15411 if (out_off == (bfd_vma) -1)
15413 else if (out_off == (bfd_vma) -2)
15414 skip = TRUE, relocate = TRUE;
15415 out_off += (input_section->output_section->vma
15416 + input_section->output_offset);
15417 outrel.r_offset = out_off;
15418 outrel.r_addend = rel->r_addend;
15420 /* Optimize unaligned reloc use. */
15421 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
15422 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
15423 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
15424 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
15425 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
15426 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
15427 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
15428 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
15429 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
15432 memset (&outrel, 0, sizeof outrel);
15433 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
15435 && r_type != R_PPC64_TOC)
15437 indx = h->elf.dynindx;
15438 BFD_ASSERT (indx != -1);
15439 outrel.r_info = ELF64_R_INFO (indx, r_type);
15443 /* This symbol is local, or marked to become local,
15444 or this is an opd section reloc which must point
15445 at a local function. */
15446 outrel.r_addend += relocation;
15447 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
15449 if (is_opd && h != NULL)
15451 /* Lie about opd entries. This case occurs
15452 when building shared libraries and we
15453 reference a function in another shared
15454 lib. The same thing happens for a weak
15455 definition in an application that's
15456 overridden by a strong definition in a
15457 shared lib. (I believe this is a generic
15458 bug in binutils handling of weak syms.)
15459 In these cases we won't use the opd
15460 entry in this lib. */
15461 unresolved_reloc = FALSE;
15464 && r_type == R_PPC64_ADDR64
15466 ? h->elf.type == STT_GNU_IFUNC
15467 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
15468 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15471 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
15473 /* We need to relocate .opd contents for ld.so.
15474 Prelink also wants simple and consistent rules
15475 for relocs. This make all RELATIVE relocs have
15476 *r_offset equal to r_addend. */
15483 ? h->elf.type == STT_GNU_IFUNC
15484 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15486 info->callbacks->einfo
15487 /* xgettext:c-format */
15488 (_("%H: %s for indirect "
15489 "function `%pT' unsupported\n"),
15490 input_bfd, input_section, rel->r_offset,
15491 ppc64_elf_howto_table[r_type]->name,
15495 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
15497 else if (sec == NULL || sec->owner == NULL)
15499 bfd_set_error (bfd_error_bad_value);
15506 osec = sec->output_section;
15507 indx = elf_section_data (osec)->dynindx;
15511 if ((osec->flags & SEC_READONLY) == 0
15512 && htab->elf.data_index_section != NULL)
15513 osec = htab->elf.data_index_section;
15515 osec = htab->elf.text_index_section;
15516 indx = elf_section_data (osec)->dynindx;
15518 BFD_ASSERT (indx != 0);
15520 /* We are turning this relocation into one
15521 against a section symbol, so subtract out
15522 the output section's address but not the
15523 offset of the input section in the output
15525 outrel.r_addend -= osec->vma;
15528 outrel.r_info = ELF64_R_INFO (indx, r_type);
15532 sreloc = elf_section_data (input_section)->sreloc;
15534 ? h->elf.type == STT_GNU_IFUNC
15535 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15537 sreloc = htab->elf.irelplt;
15539 htab->local_ifunc_resolver = 1;
15540 else if (is_static_defined (&h->elf))
15541 htab->maybe_local_ifunc_resolver = 1;
15543 if (sreloc == NULL)
15546 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
15549 loc = sreloc->contents;
15550 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
15551 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
15553 /* If this reloc is against an external symbol, it will
15554 be computed at runtime, so there's no need to do
15555 anything now. However, for the sake of prelink ensure
15556 that the section contents are a known value. */
15559 unresolved_reloc = FALSE;
15560 /* The value chosen here is quite arbitrary as ld.so
15561 ignores section contents except for the special
15562 case of .opd where the contents might be accessed
15563 before relocation. Choose zero, as that won't
15564 cause reloc overflow. */
15567 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15568 to improve backward compatibility with older
15570 if (r_type == R_PPC64_ADDR64)
15571 addend = outrel.r_addend;
15572 /* Adjust pc_relative relocs to have zero in *r_offset. */
15573 else if (ppc64_elf_howto_table[r_type]->pc_relative)
15574 addend = outrel.r_offset;
15580 case R_PPC64_GLOB_DAT:
15581 case R_PPC64_JMP_SLOT:
15582 case R_PPC64_JMP_IREL:
15583 case R_PPC64_RELATIVE:
15584 /* We shouldn't ever see these dynamic relocs in relocatable
15586 /* Fall through. */
15588 case R_PPC64_PLTGOT16:
15589 case R_PPC64_PLTGOT16_DS:
15590 case R_PPC64_PLTGOT16_HA:
15591 case R_PPC64_PLTGOT16_HI:
15592 case R_PPC64_PLTGOT16_LO:
15593 case R_PPC64_PLTGOT16_LO_DS:
15594 case R_PPC64_PLTREL32:
15595 case R_PPC64_PLTREL64:
15596 /* These ones haven't been implemented yet. */
15598 info->callbacks->einfo
15599 /* xgettext:c-format */
15600 (_("%P: %pB: %s is not supported for `%pT'\n"),
15602 ppc64_elf_howto_table[r_type]->name, sym_name);
15604 bfd_set_error (bfd_error_invalid_operation);
15609 /* Multi-instruction sequences that access the TOC can be
15610 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15611 to nop; addi rb,r2,x; */
15617 case R_PPC64_GOT_TLSLD16_HI:
15618 case R_PPC64_GOT_TLSGD16_HI:
15619 case R_PPC64_GOT_TPREL16_HI:
15620 case R_PPC64_GOT_DTPREL16_HI:
15621 case R_PPC64_GOT16_HI:
15622 case R_PPC64_TOC16_HI:
15623 /* These relocs would only be useful if building up an
15624 offset to later add to r2, perhaps in an indexed
15625 addressing mode instruction. Don't try to optimize.
15626 Unfortunately, the possibility of someone building up an
15627 offset like this or even with the HA relocs, means that
15628 we need to check the high insn when optimizing the low
15632 case R_PPC64_PLTCALL:
15633 if (unresolved_reloc)
15635 /* No plt entry. Make this into a direct call. */
15636 bfd_byte *p = contents + rel->r_offset;
15637 insn = bfd_get_32 (input_bfd, p);
15639 bfd_put_32 (input_bfd, B_DOT | insn, p);
15640 bfd_put_32 (input_bfd, NOP, p + 4);
15641 unresolved_reloc = save_unresolved_reloc;
15642 r_type = R_PPC64_REL24;
15646 case R_PPC64_PLTSEQ:
15647 if (unresolved_reloc)
15649 unresolved_reloc = FALSE;
15654 case R_PPC64_PLT16_HA:
15655 if (unresolved_reloc)
15657 unresolved_reloc = FALSE;
15660 /* Fall through. */
15661 case R_PPC64_GOT_TLSLD16_HA:
15662 case R_PPC64_GOT_TLSGD16_HA:
15663 case R_PPC64_GOT_TPREL16_HA:
15664 case R_PPC64_GOT_DTPREL16_HA:
15665 case R_PPC64_GOT16_HA:
15666 case R_PPC64_TOC16_HA:
15667 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15668 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15672 p = contents + (rel->r_offset & ~3);
15673 bfd_put_32 (input_bfd, NOP, p);
15678 case R_PPC64_PLT16_LO:
15679 case R_PPC64_PLT16_LO_DS:
15680 if (unresolved_reloc)
15682 unresolved_reloc = FALSE;
15685 /* Fall through. */
15686 case R_PPC64_GOT_TLSLD16_LO:
15687 case R_PPC64_GOT_TLSGD16_LO:
15688 case R_PPC64_GOT_TPREL16_LO_DS:
15689 case R_PPC64_GOT_DTPREL16_LO_DS:
15690 case R_PPC64_GOT16_LO:
15691 case R_PPC64_GOT16_LO_DS:
15692 case R_PPC64_TOC16_LO:
15693 case R_PPC64_TOC16_LO_DS:
15694 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15695 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15697 bfd_byte *p = contents + (rel->r_offset & ~3);
15698 insn = bfd_get_32 (input_bfd, p);
15699 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15701 /* Transform addic to addi when we change reg. */
15702 insn &= ~((0x3f << 26) | (0x1f << 16));
15703 insn |= (14u << 26) | (2 << 16);
15707 insn &= ~(0x1f << 16);
15710 bfd_put_32 (input_bfd, insn, p);
15714 case R_PPC64_TPREL16_HA:
15715 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
15717 bfd_byte *p = contents + (rel->r_offset & ~3);
15718 insn = bfd_get_32 (input_bfd, p);
15719 if ((insn & ((0x3f << 26) | 0x1f << 16))
15720 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15721 /* xgettext:c-format */
15722 info->callbacks->minfo
15723 (_("%H: warning: %s unexpected insn %#x.\n"),
15724 input_bfd, input_section, rel->r_offset,
15725 ppc64_elf_howto_table[r_type]->name, insn);
15728 bfd_put_32 (input_bfd, NOP, p);
15734 case R_PPC64_TPREL16_LO:
15735 case R_PPC64_TPREL16_LO_DS:
15736 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
15738 bfd_byte *p = contents + (rel->r_offset & ~3);
15739 insn = bfd_get_32 (input_bfd, p);
15740 insn &= ~(0x1f << 16);
15742 bfd_put_32 (input_bfd, insn, p);
15747 /* Do any further special processing. */
15753 case R_PPC64_REL16_HA:
15754 case R_PPC64_REL16DX_HA:
15755 case R_PPC64_ADDR16_HA:
15756 case R_PPC64_ADDR16_HIGHA:
15757 case R_PPC64_ADDR16_HIGHERA:
15758 case R_PPC64_ADDR16_HIGHESTA:
15759 case R_PPC64_TOC16_HA:
15760 case R_PPC64_SECTOFF_HA:
15761 case R_PPC64_TPREL16_HA:
15762 case R_PPC64_TPREL16_HIGHA:
15763 case R_PPC64_TPREL16_HIGHERA:
15764 case R_PPC64_TPREL16_HIGHESTA:
15765 case R_PPC64_DTPREL16_HA:
15766 case R_PPC64_DTPREL16_HIGHA:
15767 case R_PPC64_DTPREL16_HIGHERA:
15768 case R_PPC64_DTPREL16_HIGHESTA:
15769 /* It's just possible that this symbol is a weak symbol
15770 that's not actually defined anywhere. In that case,
15771 'sec' would be NULL, and we should leave the symbol
15772 alone (it will be set to zero elsewhere in the link). */
15775 /* Fall through. */
15777 case R_PPC64_GOT16_HA:
15778 case R_PPC64_PLTGOT16_HA:
15779 case R_PPC64_PLT16_HA:
15780 case R_PPC64_GOT_TLSGD16_HA:
15781 case R_PPC64_GOT_TLSLD16_HA:
15782 case R_PPC64_GOT_TPREL16_HA:
15783 case R_PPC64_GOT_DTPREL16_HA:
15784 /* Add 0x10000 if sign bit in 0:15 is set.
15785 Bits 0:15 are not used. */
15789 case R_PPC64_ADDR16_DS:
15790 case R_PPC64_ADDR16_LO_DS:
15791 case R_PPC64_GOT16_DS:
15792 case R_PPC64_GOT16_LO_DS:
15793 case R_PPC64_PLT16_LO_DS:
15794 case R_PPC64_SECTOFF_DS:
15795 case R_PPC64_SECTOFF_LO_DS:
15796 case R_PPC64_TOC16_DS:
15797 case R_PPC64_TOC16_LO_DS:
15798 case R_PPC64_PLTGOT16_DS:
15799 case R_PPC64_PLTGOT16_LO_DS:
15800 case R_PPC64_GOT_TPREL16_DS:
15801 case R_PPC64_GOT_TPREL16_LO_DS:
15802 case R_PPC64_GOT_DTPREL16_DS:
15803 case R_PPC64_GOT_DTPREL16_LO_DS:
15804 case R_PPC64_TPREL16_DS:
15805 case R_PPC64_TPREL16_LO_DS:
15806 case R_PPC64_DTPREL16_DS:
15807 case R_PPC64_DTPREL16_LO_DS:
15808 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15810 /* If this reloc is against an lq, lxv, or stxv insn, then
15811 the value must be a multiple of 16. This is somewhat of
15812 a hack, but the "correct" way to do this by defining _DQ
15813 forms of all the _DS relocs bloats all reloc switches in
15814 this file. It doesn't make much sense to use these
15815 relocs in data, so testing the insn should be safe. */
15816 if ((insn & (0x3f << 26)) == (56u << 26)
15817 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15819 relocation += addend;
15820 addend = insn & (mask ^ 3);
15821 if ((relocation & mask) != 0)
15823 relocation ^= relocation & mask;
15824 info->callbacks->einfo
15825 /* xgettext:c-format */
15826 (_("%H: error: %s not a multiple of %u\n"),
15827 input_bfd, input_section, rel->r_offset,
15828 ppc64_elf_howto_table[r_type]->name,
15830 bfd_set_error (bfd_error_bad_value);
15837 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15838 because such sections are not SEC_ALLOC and thus ld.so will
15839 not process them. */
15840 howto = ppc64_elf_howto_table[(int) r_type];
15841 if (unresolved_reloc
15842 && !((input_section->flags & SEC_DEBUGGING) != 0
15843 && h->elf.def_dynamic)
15844 && _bfd_elf_section_offset (output_bfd, info, input_section,
15845 rel->r_offset) != (bfd_vma) -1)
15847 info->callbacks->einfo
15848 /* xgettext:c-format */
15849 (_("%H: unresolvable %s against `%pT'\n"),
15850 input_bfd, input_section, rel->r_offset,
15852 h->elf.root.root.string);
15856 /* 16-bit fields in insns mostly have signed values, but a
15857 few insns have 16-bit unsigned values. Really, we should
15858 have different reloc types. */
15859 if (howto->complain_on_overflow != complain_overflow_dont
15860 && howto->dst_mask == 0xffff
15861 && (input_section->flags & SEC_CODE) != 0)
15863 enum complain_overflow complain = complain_overflow_signed;
15865 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15866 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15867 complain = complain_overflow_bitfield;
15868 else if (howto->rightshift == 0
15869 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15870 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15871 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15872 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15873 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15874 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15875 complain = complain_overflow_unsigned;
15876 if (howto->complain_on_overflow != complain)
15878 alt_howto = *howto;
15879 alt_howto.complain_on_overflow = complain;
15880 howto = &alt_howto;
15884 if (r_type == R_PPC64_REL16DX_HA)
15886 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15887 if (rel->r_offset + 4 > input_section->size)
15888 r = bfd_reloc_outofrange;
15891 relocation += addend;
15892 relocation -= (rel->r_offset
15893 + input_section->output_offset
15894 + input_section->output_section->vma);
15895 relocation = (bfd_signed_vma) relocation >> 16;
15896 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15898 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15899 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15901 if (relocation + 0x8000 > 0xffff)
15902 r = bfd_reloc_overflow;
15906 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15907 rel->r_offset, relocation, addend);
15909 if (r != bfd_reloc_ok)
15911 char *more_info = NULL;
15912 const char *reloc_name = howto->name;
15914 if (reloc_dest != DEST_NORMAL)
15916 more_info = bfd_malloc (strlen (reloc_name) + 8);
15917 if (more_info != NULL)
15919 strcpy (more_info, reloc_name);
15920 strcat (more_info, (reloc_dest == DEST_OPD
15921 ? " (OPD)" : " (stub)"));
15922 reloc_name = more_info;
15926 if (r == bfd_reloc_overflow)
15928 /* On code like "if (foo) foo();" don't report overflow
15929 on a branch to zero when foo is undefined. */
15931 && (reloc_dest == DEST_STUB
15933 && (h->elf.root.type == bfd_link_hash_undefweak
15934 || h->elf.root.type == bfd_link_hash_undefined)
15935 && is_branch_reloc (r_type))))
15936 info->callbacks->reloc_overflow (info, &h->elf.root,
15937 sym_name, reloc_name,
15939 input_bfd, input_section,
15944 info->callbacks->einfo
15945 /* xgettext:c-format */
15946 (_("%H: %s against `%pT': error %d\n"),
15947 input_bfd, input_section, rel->r_offset,
15948 reloc_name, sym_name, (int) r);
15951 if (more_info != NULL)
15961 Elf_Internal_Shdr *rel_hdr;
15962 size_t deleted = rel - wrel;
15964 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15965 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15966 if (rel_hdr->sh_size == 0)
15968 /* It is too late to remove an empty reloc section. Leave
15970 ??? What is wrong with an empty section??? */
15971 rel_hdr->sh_size = rel_hdr->sh_entsize;
15974 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15975 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15976 input_section->reloc_count -= deleted;
15979 /* If we're emitting relocations, then shortly after this function
15980 returns, reloc offsets and addends for this section will be
15981 adjusted. Worse, reloc symbol indices will be for the output
15982 file rather than the input. Save a copy of the relocs for
15983 opd_entry_value. */
15984 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15987 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15988 rel = bfd_alloc (input_bfd, amt);
15989 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15990 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15993 memcpy (rel, relocs, amt);
15998 /* Adjust the value of any local symbols in opd sections. */
16001 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
16002 const char *name ATTRIBUTE_UNUSED,
16003 Elf_Internal_Sym *elfsym,
16004 asection *input_sec,
16005 struct elf_link_hash_entry *h)
16007 struct _opd_sec_data *opd;
16014 opd = get_opd_info (input_sec);
16015 if (opd == NULL || opd->adjust == NULL)
16018 value = elfsym->st_value - input_sec->output_offset;
16019 if (!bfd_link_relocatable (info))
16020 value -= input_sec->output_section->vma;
16022 adjust = opd->adjust[OPD_NDX (value)];
16026 elfsym->st_value += adjust;
16030 /* Finish up dynamic symbol handling. We set the contents of various
16031 dynamic sections here. */
16034 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
16035 struct bfd_link_info *info,
16036 struct elf_link_hash_entry *h,
16037 Elf_Internal_Sym *sym)
16039 struct ppc_link_hash_table *htab;
16040 struct plt_entry *ent;
16042 htab = ppc_hash_table (info);
16046 if (!htab->opd_abi && !h->def_regular)
16047 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
16048 if (ent->plt.offset != (bfd_vma) -1)
16050 /* Mark the symbol as undefined, rather than as
16051 defined in glink. Leave the value if there were
16052 any relocations where pointer equality matters
16053 (this is a clue for the dynamic linker, to make
16054 function pointer comparisons work between an
16055 application and shared library), otherwise set it
16057 sym->st_shndx = SHN_UNDEF;
16058 if (!h->pointer_equality_needed)
16060 else if (!h->ref_regular_nonweak)
16062 /* This breaks function pointer comparisons, but
16063 that is better than breaking tests for a NULL
16064 function pointer. */
16072 /* This symbol needs a copy reloc. Set it up. */
16073 Elf_Internal_Rela rela;
16077 if (h->dynindx == -1
16078 || (h->root.type != bfd_link_hash_defined
16079 && h->root.type != bfd_link_hash_defweak)
16080 || htab->elf.srelbss == NULL
16081 || htab->elf.sreldynrelro == NULL)
16084 rela.r_offset = (h->root.u.def.value
16085 + h->root.u.def.section->output_section->vma
16086 + h->root.u.def.section->output_offset);
16087 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
16089 if (h->root.u.def.section == htab->elf.sdynrelro)
16090 srel = htab->elf.sreldynrelro;
16092 srel = htab->elf.srelbss;
16093 loc = srel->contents;
16094 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
16095 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
16101 /* Used to decide how to sort relocs in an optimal manner for the
16102 dynamic linker, before writing them out. */
16104 static enum elf_reloc_type_class
16105 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
16106 const asection *rel_sec,
16107 const Elf_Internal_Rela *rela)
16109 enum elf_ppc64_reloc_type r_type;
16110 struct ppc_link_hash_table *htab = ppc_hash_table (info);
16112 if (rel_sec == htab->elf.irelplt)
16113 return reloc_class_ifunc;
16115 r_type = ELF64_R_TYPE (rela->r_info);
16118 case R_PPC64_RELATIVE:
16119 return reloc_class_relative;
16120 case R_PPC64_JMP_SLOT:
16121 return reloc_class_plt;
16123 return reloc_class_copy;
16125 return reloc_class_normal;
16129 /* Finish up the dynamic sections. */
16132 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
16133 struct bfd_link_info *info)
16135 struct ppc_link_hash_table *htab;
16139 htab = ppc_hash_table (info);
16143 dynobj = htab->elf.dynobj;
16144 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
16146 if (htab->elf.dynamic_sections_created)
16148 Elf64_External_Dyn *dyncon, *dynconend;
16150 if (sdyn == NULL || htab->elf.sgot == NULL)
16153 dyncon = (Elf64_External_Dyn *) sdyn->contents;
16154 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
16155 for (; dyncon < dynconend; dyncon++)
16157 Elf_Internal_Dyn dyn;
16160 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
16167 case DT_PPC64_GLINK:
16169 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
16170 /* We stupidly defined DT_PPC64_GLINK to be the start
16171 of glink rather than the first entry point, which is
16172 what ld.so needs, and now have a bigger stub to
16173 support automatic multiple TOCs. */
16174 dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4;
16178 s = bfd_get_section_by_name (output_bfd, ".opd");
16181 dyn.d_un.d_ptr = s->vma;
16185 if (htab->do_multi_toc && htab->multi_toc_needed)
16186 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
16187 if (htab->has_plt_localentry0)
16188 dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY;
16191 case DT_PPC64_OPDSZ:
16192 s = bfd_get_section_by_name (output_bfd, ".opd");
16195 dyn.d_un.d_val = s->size;
16199 s = htab->elf.splt;
16200 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
16204 s = htab->elf.srelplt;
16205 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
16209 dyn.d_un.d_val = htab->elf.srelplt->size;
16213 if (htab->local_ifunc_resolver)
16214 info->callbacks->einfo
16215 (_("%X%P: text relocations and GNU indirect "
16216 "functions will result in a segfault at runtime\n"));
16217 else if (htab->maybe_local_ifunc_resolver)
16218 info->callbacks->einfo
16219 (_("%P: warning: text relocations and GNU indirect "
16220 "functions may result in a segfault at runtime\n"));
16224 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
16228 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0
16229 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
16231 /* Fill in the first entry in the global offset table.
16232 We use it to hold the link-time TOCbase. */
16233 bfd_put_64 (output_bfd,
16234 elf_gp (output_bfd) + TOC_BASE_OFF,
16235 htab->elf.sgot->contents);
16237 /* Set .got entry size. */
16238 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
16241 if (htab->elf.splt != NULL && htab->elf.splt->size != 0
16242 && htab->elf.splt->output_section != bfd_abs_section_ptr)
16244 /* Set .plt entry size. */
16245 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
16246 = PLT_ENTRY_SIZE (htab);
16249 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
16250 brlt ourselves if emitrelocations. */
16251 if (htab->brlt != NULL
16252 && htab->brlt->reloc_count != 0
16253 && !_bfd_elf_link_output_relocs (output_bfd,
16255 elf_section_data (htab->brlt)->rela.hdr,
16256 elf_section_data (htab->brlt)->relocs,
16260 if (htab->glink != NULL
16261 && htab->glink->reloc_count != 0
16262 && !_bfd_elf_link_output_relocs (output_bfd,
16264 elf_section_data (htab->glink)->rela.hdr,
16265 elf_section_data (htab->glink)->relocs,
16269 if (htab->glink_eh_frame != NULL
16270 && htab->glink_eh_frame->size != 0)
16274 struct map_stub *group;
16277 p = htab->glink_eh_frame->contents;
16278 p += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
16280 for (group = htab->group; group != NULL; group = group->next)
16281 if (group->stub_sec != NULL)
16283 /* Offset to stub section. */
16284 val = (group->stub_sec->output_section->vma
16285 + group->stub_sec->output_offset);
16286 val -= (htab->glink_eh_frame->output_section->vma
16287 + htab->glink_eh_frame->output_offset
16288 + (p + 8 - htab->glink_eh_frame->contents));
16289 if (val + 0x80000000 > 0xffffffff)
16292 (_("%s offset too large for .eh_frame sdata4 encoding"),
16293 group->stub_sec->name);
16296 bfd_put_32 (dynobj, val, p + 8);
16297 p += stub_eh_frame_size (group, align);
16299 if (htab->glink != NULL && htab->glink->size != 0)
16301 /* Offset to .glink. */
16302 val = (htab->glink->output_section->vma
16303 + htab->glink->output_offset
16305 val -= (htab->glink_eh_frame->output_section->vma
16306 + htab->glink_eh_frame->output_offset
16307 + (p + 8 - htab->glink_eh_frame->contents));
16308 if (val + 0x80000000 > 0xffffffff)
16311 (_("%s offset too large for .eh_frame sdata4 encoding"),
16312 htab->glink->name);
16315 bfd_put_32 (dynobj, val, p + 8);
16316 p += (24 + align - 1) & -align;
16319 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
16320 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
16321 htab->glink_eh_frame,
16322 htab->glink_eh_frame->contents))
16326 /* We need to handle writing out multiple GOT sections ourselves,
16327 since we didn't add them to DYNOBJ. We know dynobj is the first
16329 while ((dynobj = dynobj->link.next) != NULL)
16333 if (!is_ppc64_elf (dynobj))
16336 s = ppc64_elf_tdata (dynobj)->got;
16339 && s->output_section != bfd_abs_section_ptr
16340 && !bfd_set_section_contents (output_bfd, s->output_section,
16341 s->contents, s->output_offset,
16344 s = ppc64_elf_tdata (dynobj)->relgot;
16347 && s->output_section != bfd_abs_section_ptr
16348 && !bfd_set_section_contents (output_bfd, s->output_section,
16349 s->contents, s->output_offset,
16357 #include "elf64-target.h"
16359 /* FreeBSD support */
16361 #undef TARGET_LITTLE_SYM
16362 #undef TARGET_LITTLE_NAME
16364 #undef TARGET_BIG_SYM
16365 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
16366 #undef TARGET_BIG_NAME
16367 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
16370 #define ELF_OSABI ELFOSABI_FREEBSD
16373 #define elf64_bed elf64_powerpc_fbsd_bed
16375 #include "elf64-target.h"