1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
57 static bfd_vma opd_entry_value
58 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
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_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
85 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
86 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
87 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
88 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
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
92 #define elf_backend_object_p ppc64_elf_object_p
93 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
94 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
95 #define elf_backend_write_core_note ppc64_elf_write_core_note
96 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
97 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
98 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
99 #define elf_backend_check_directives ppc64_elf_process_dot_syms
100 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
101 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
102 #define elf_backend_check_relocs ppc64_elf_check_relocs
103 #define elf_backend_gc_keep ppc64_elf_gc_keep
104 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
105 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
106 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
107 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
108 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
109 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
110 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
111 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
112 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
113 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
114 #define elf_backend_action_discarded ppc64_elf_action_discarded
115 #define elf_backend_relocate_section ppc64_elf_relocate_section
116 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
117 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
118 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
119 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
120 #define elf_backend_special_sections ppc64_elf_special_sections
121 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 /* The name of the dynamic interpreter. This is put in the .interp
125 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
127 /* The size in bytes of an entry in the procedure linkage table. */
128 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
130 /* The initial size of the plt reserved for the dynamic linker. */
131 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
133 /* Offsets to some stack save slots. */
135 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
136 /* This one is dodgy. ELFv2 does not have a linker word, so use the
137 CR save slot. Used only by optimised __tls_get_addr call stub,
138 relying on __tls_get_addr_opt not saving CR.. */
139 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
141 /* TOC base pointers offset from start of TOC. */
142 #define TOC_BASE_OFF 0x8000
144 /* Offset of tp and dtp pointers from start of TLS block. */
145 #define TP_OFFSET 0x7000
146 #define DTP_OFFSET 0x8000
148 /* .plt call stub instructions. The normal stub is like this, but
149 sometimes the .plt entry crosses a 64k boundary and we need to
150 insert an addi to adjust r11. */
151 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
152 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
153 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
154 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
155 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
156 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
157 #define BCTR 0x4e800420 /* bctr */
159 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
160 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
161 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
163 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
164 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
165 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
166 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
167 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
168 #define BNECTR 0x4ca20420 /* bnectr+ */
169 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
171 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
172 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
173 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
175 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
177 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
178 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
180 /* glink call stub instructions. We enter with the index in R0. */
181 #define GLINK_CALL_STUB_SIZE (16*4)
185 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
186 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
188 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
189 /* ld %2,(0b-1b)(%11) */
190 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
191 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
197 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
198 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
199 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
200 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
201 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
204 #define NOP 0x60000000
206 /* Some other nops. */
207 #define CROR_151515 0x4def7b82
208 #define CROR_313131 0x4ffffb82
210 /* .glink entries for the first 32k functions are two instructions. */
211 #define LI_R0_0 0x38000000 /* li %r0,0 */
212 #define B_DOT 0x48000000 /* b . */
214 /* After that, we need two instructions to load the index, followed by
216 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
217 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
219 /* Instructions used by the save and restore reg functions. */
220 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
221 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
222 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
223 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
224 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
225 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
226 #define LI_R12_0 0x39800000 /* li %r12,0 */
227 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
228 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
229 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
230 #define BLR 0x4e800020 /* blr */
232 /* Since .opd is an array of descriptors and each entry will end up
233 with identical R_PPC64_RELATIVE relocs, there is really no need to
234 propagate .opd relocs; The dynamic linker should be taught to
235 relocate .opd without reloc entries. */
236 #ifndef NO_OPD_RELOCS
237 #define NO_OPD_RELOCS 0
240 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
242 /* Relocation HOWTO's. */
243 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
245 static reloc_howto_type ppc64_elf_howto_raw
[] = {
246 /* This reloc does nothing. */
247 HOWTO (R_PPC64_NONE
, /* type */
249 2, /* size (0 = byte, 1 = short, 2 = long) */
251 FALSE
, /* pc_relative */
253 complain_overflow_dont
, /* complain_on_overflow */
254 bfd_elf_generic_reloc
, /* special_function */
255 "R_PPC64_NONE", /* name */
256 FALSE
, /* partial_inplace */
259 FALSE
), /* pcrel_offset */
261 /* A standard 32 bit relocation. */
262 HOWTO (R_PPC64_ADDR32
, /* type */
264 2, /* size (0 = byte, 1 = short, 2 = long) */
266 FALSE
, /* pc_relative */
268 complain_overflow_bitfield
, /* complain_on_overflow */
269 bfd_elf_generic_reloc
, /* special_function */
270 "R_PPC64_ADDR32", /* name */
271 FALSE
, /* partial_inplace */
273 0xffffffff, /* dst_mask */
274 FALSE
), /* pcrel_offset */
276 /* An absolute 26 bit branch; the lower two bits must be zero.
277 FIXME: we don't check that, we just clear them. */
278 HOWTO (R_PPC64_ADDR24
, /* type */
280 2, /* size (0 = byte, 1 = short, 2 = long) */
282 FALSE
, /* pc_relative */
284 complain_overflow_bitfield
, /* complain_on_overflow */
285 bfd_elf_generic_reloc
, /* special_function */
286 "R_PPC64_ADDR24", /* name */
287 FALSE
, /* partial_inplace */
289 0x03fffffc, /* dst_mask */
290 FALSE
), /* pcrel_offset */
292 /* A standard 16 bit relocation. */
293 HOWTO (R_PPC64_ADDR16
, /* type */
295 1, /* size (0 = byte, 1 = short, 2 = long) */
297 FALSE
, /* pc_relative */
299 complain_overflow_bitfield
, /* complain_on_overflow */
300 bfd_elf_generic_reloc
, /* special_function */
301 "R_PPC64_ADDR16", /* name */
302 FALSE
, /* partial_inplace */
304 0xffff, /* dst_mask */
305 FALSE
), /* pcrel_offset */
307 /* A 16 bit relocation without overflow. */
308 HOWTO (R_PPC64_ADDR16_LO
, /* type */
310 1, /* size (0 = byte, 1 = short, 2 = long) */
312 FALSE
, /* pc_relative */
314 complain_overflow_dont
,/* complain_on_overflow */
315 bfd_elf_generic_reloc
, /* special_function */
316 "R_PPC64_ADDR16_LO", /* name */
317 FALSE
, /* partial_inplace */
319 0xffff, /* dst_mask */
320 FALSE
), /* pcrel_offset */
322 /* Bits 16-31 of an address. */
323 HOWTO (R_PPC64_ADDR16_HI
, /* type */
325 1, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE
, /* pc_relative */
329 complain_overflow_signed
, /* complain_on_overflow */
330 bfd_elf_generic_reloc
, /* special_function */
331 "R_PPC64_ADDR16_HI", /* name */
332 FALSE
, /* partial_inplace */
334 0xffff, /* dst_mask */
335 FALSE
), /* pcrel_offset */
337 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
338 bits, treated as a signed number, is negative. */
339 HOWTO (R_PPC64_ADDR16_HA
, /* type */
341 1, /* size (0 = byte, 1 = short, 2 = long) */
343 FALSE
, /* pc_relative */
345 complain_overflow_signed
, /* complain_on_overflow */
346 ppc64_elf_ha_reloc
, /* special_function */
347 "R_PPC64_ADDR16_HA", /* name */
348 FALSE
, /* partial_inplace */
350 0xffff, /* dst_mask */
351 FALSE
), /* pcrel_offset */
353 /* An absolute 16 bit branch; the lower two bits must be zero.
354 FIXME: we don't check that, we just clear them. */
355 HOWTO (R_PPC64_ADDR14
, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE
, /* pc_relative */
361 complain_overflow_bitfield
, /* complain_on_overflow */
362 ppc64_elf_branch_reloc
, /* special_function */
363 "R_PPC64_ADDR14", /* name */
364 FALSE
, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE
), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is expected to be taken. The lower two
371 bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE
, /* pc_relative */
378 complain_overflow_bitfield
, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc
, /* special_function */
380 "R_PPC64_ADDR14_BRTAKEN",/* name */
381 FALSE
, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE
), /* pcrel_offset */
386 /* An absolute 16 bit branch, for which bit 10 should be set to
387 indicate that the branch is not expected to be taken. The lower
388 two bits must be zero. */
389 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
393 FALSE
, /* pc_relative */
395 complain_overflow_bitfield
, /* complain_on_overflow */
396 ppc64_elf_brtaken_reloc
, /* special_function */
397 "R_PPC64_ADDR14_BRNTAKEN",/* name */
398 FALSE
, /* partial_inplace */
400 0x0000fffc, /* dst_mask */
401 FALSE
), /* pcrel_offset */
403 /* A relative 26 bit branch; the lower two bits must be zero. */
404 HOWTO (R_PPC64_REL24
, /* type */
406 2, /* size (0 = byte, 1 = short, 2 = long) */
408 TRUE
, /* pc_relative */
410 complain_overflow_signed
, /* complain_on_overflow */
411 ppc64_elf_branch_reloc
, /* special_function */
412 "R_PPC64_REL24", /* name */
413 FALSE
, /* partial_inplace */
415 0x03fffffc, /* dst_mask */
416 TRUE
), /* pcrel_offset */
418 /* A relative 16 bit branch; the lower two bits must be zero. */
419 HOWTO (R_PPC64_REL14
, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE
, /* pc_relative */
425 complain_overflow_signed
, /* complain_on_overflow */
426 ppc64_elf_branch_reloc
, /* special_function */
427 "R_PPC64_REL14", /* name */
428 FALSE
, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE
), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is expected to be taken. The lower two bits must be
436 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE
, /* pc_relative */
442 complain_overflow_signed
, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc
, /* special_function */
444 "R_PPC64_REL14_BRTAKEN", /* name */
445 FALSE
, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE
), /* pcrel_offset */
450 /* A relative 16 bit branch. Bit 10 should be set to indicate that
451 the branch is not expected to be taken. The lower two bits must
453 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
455 2, /* size (0 = byte, 1 = short, 2 = long) */
457 TRUE
, /* pc_relative */
459 complain_overflow_signed
, /* complain_on_overflow */
460 ppc64_elf_brtaken_reloc
, /* special_function */
461 "R_PPC64_REL14_BRNTAKEN",/* name */
462 FALSE
, /* partial_inplace */
464 0x0000fffc, /* dst_mask */
465 TRUE
), /* pcrel_offset */
467 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
469 HOWTO (R_PPC64_GOT16
, /* type */
471 1, /* size (0 = byte, 1 = short, 2 = long) */
473 FALSE
, /* pc_relative */
475 complain_overflow_signed
, /* complain_on_overflow */
476 ppc64_elf_unhandled_reloc
, /* special_function */
477 "R_PPC64_GOT16", /* name */
478 FALSE
, /* partial_inplace */
480 0xffff, /* dst_mask */
481 FALSE
), /* pcrel_offset */
483 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
485 HOWTO (R_PPC64_GOT16_LO
, /* type */
487 1, /* size (0 = byte, 1 = short, 2 = long) */
489 FALSE
, /* pc_relative */
491 complain_overflow_dont
, /* complain_on_overflow */
492 ppc64_elf_unhandled_reloc
, /* special_function */
493 "R_PPC64_GOT16_LO", /* name */
494 FALSE
, /* partial_inplace */
496 0xffff, /* dst_mask */
497 FALSE
), /* pcrel_offset */
499 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
501 HOWTO (R_PPC64_GOT16_HI
, /* type */
503 1, /* size (0 = byte, 1 = short, 2 = long) */
505 FALSE
, /* pc_relative */
507 complain_overflow_signed
,/* complain_on_overflow */
508 ppc64_elf_unhandled_reloc
, /* special_function */
509 "R_PPC64_GOT16_HI", /* name */
510 FALSE
, /* partial_inplace */
512 0xffff, /* dst_mask */
513 FALSE
), /* pcrel_offset */
515 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
517 HOWTO (R_PPC64_GOT16_HA
, /* type */
519 1, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE
, /* pc_relative */
523 complain_overflow_signed
,/* complain_on_overflow */
524 ppc64_elf_unhandled_reloc
, /* special_function */
525 "R_PPC64_GOT16_HA", /* name */
526 FALSE
, /* partial_inplace */
528 0xffff, /* dst_mask */
529 FALSE
), /* pcrel_offset */
531 /* This is used only by the dynamic linker. The symbol should exist
532 both in the object being run and in some shared library. The
533 dynamic linker copies the data addressed by the symbol from the
534 shared library into the object, because the object being
535 run has to have the data at some particular address. */
536 HOWTO (R_PPC64_COPY
, /* type */
538 0, /* this one is variable size */
540 FALSE
, /* pc_relative */
542 complain_overflow_dont
, /* complain_on_overflow */
543 ppc64_elf_unhandled_reloc
, /* special_function */
544 "R_PPC64_COPY", /* name */
545 FALSE
, /* partial_inplace */
548 FALSE
), /* pcrel_offset */
550 /* Like R_PPC64_ADDR64, but used when setting global offset table
552 HOWTO (R_PPC64_GLOB_DAT
, /* type */
554 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
556 FALSE
, /* pc_relative */
558 complain_overflow_dont
, /* complain_on_overflow */
559 ppc64_elf_unhandled_reloc
, /* special_function */
560 "R_PPC64_GLOB_DAT", /* name */
561 FALSE
, /* partial_inplace */
563 ONES (64), /* dst_mask */
564 FALSE
), /* pcrel_offset */
566 /* Created by the link editor. Marks a procedure linkage table
567 entry for a symbol. */
568 HOWTO (R_PPC64_JMP_SLOT
, /* type */
570 0, /* size (0 = byte, 1 = short, 2 = long) */
572 FALSE
, /* pc_relative */
574 complain_overflow_dont
, /* complain_on_overflow */
575 ppc64_elf_unhandled_reloc
, /* special_function */
576 "R_PPC64_JMP_SLOT", /* name */
577 FALSE
, /* partial_inplace */
580 FALSE
), /* pcrel_offset */
582 /* Used only by the dynamic linker. When the object is run, this
583 doubleword64 is set to the load address of the object, plus the
585 HOWTO (R_PPC64_RELATIVE
, /* type */
587 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
589 FALSE
, /* pc_relative */
591 complain_overflow_dont
, /* complain_on_overflow */
592 bfd_elf_generic_reloc
, /* special_function */
593 "R_PPC64_RELATIVE", /* name */
594 FALSE
, /* partial_inplace */
596 ONES (64), /* dst_mask */
597 FALSE
), /* pcrel_offset */
599 /* Like R_PPC64_ADDR32, but may be unaligned. */
600 HOWTO (R_PPC64_UADDR32
, /* type */
602 2, /* size (0 = byte, 1 = short, 2 = long) */
604 FALSE
, /* pc_relative */
606 complain_overflow_bitfield
, /* complain_on_overflow */
607 bfd_elf_generic_reloc
, /* special_function */
608 "R_PPC64_UADDR32", /* name */
609 FALSE
, /* partial_inplace */
611 0xffffffff, /* dst_mask */
612 FALSE
), /* pcrel_offset */
614 /* Like R_PPC64_ADDR16, but may be unaligned. */
615 HOWTO (R_PPC64_UADDR16
, /* type */
617 1, /* size (0 = byte, 1 = short, 2 = long) */
619 FALSE
, /* pc_relative */
621 complain_overflow_bitfield
, /* complain_on_overflow */
622 bfd_elf_generic_reloc
, /* special_function */
623 "R_PPC64_UADDR16", /* name */
624 FALSE
, /* partial_inplace */
626 0xffff, /* dst_mask */
627 FALSE
), /* pcrel_offset */
629 /* 32-bit PC relative. */
630 HOWTO (R_PPC64_REL32
, /* type */
632 2, /* size (0 = byte, 1 = short, 2 = long) */
634 TRUE
, /* pc_relative */
636 /* FIXME: Verify. Was complain_overflow_bitfield. */
637 complain_overflow_signed
, /* complain_on_overflow */
638 bfd_elf_generic_reloc
, /* special_function */
639 "R_PPC64_REL32", /* name */
640 FALSE
, /* partial_inplace */
642 0xffffffff, /* dst_mask */
643 TRUE
), /* pcrel_offset */
645 /* 32-bit relocation to the symbol's procedure linkage table. */
646 HOWTO (R_PPC64_PLT32
, /* type */
648 2, /* size (0 = byte, 1 = short, 2 = long) */
650 FALSE
, /* pc_relative */
652 complain_overflow_bitfield
, /* complain_on_overflow */
653 ppc64_elf_unhandled_reloc
, /* special_function */
654 "R_PPC64_PLT32", /* name */
655 FALSE
, /* partial_inplace */
657 0xffffffff, /* dst_mask */
658 FALSE
), /* pcrel_offset */
660 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
661 FIXME: R_PPC64_PLTREL32 not supported. */
662 HOWTO (R_PPC64_PLTREL32
, /* type */
664 2, /* size (0 = byte, 1 = short, 2 = long) */
666 TRUE
, /* pc_relative */
668 complain_overflow_signed
, /* complain_on_overflow */
669 bfd_elf_generic_reloc
, /* special_function */
670 "R_PPC64_PLTREL32", /* name */
671 FALSE
, /* partial_inplace */
673 0xffffffff, /* dst_mask */
674 TRUE
), /* pcrel_offset */
676 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
678 HOWTO (R_PPC64_PLT16_LO
, /* type */
680 1, /* size (0 = byte, 1 = short, 2 = long) */
682 FALSE
, /* pc_relative */
684 complain_overflow_dont
, /* complain_on_overflow */
685 ppc64_elf_unhandled_reloc
, /* special_function */
686 "R_PPC64_PLT16_LO", /* name */
687 FALSE
, /* partial_inplace */
689 0xffff, /* dst_mask */
690 FALSE
), /* pcrel_offset */
692 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
694 HOWTO (R_PPC64_PLT16_HI
, /* type */
696 1, /* size (0 = byte, 1 = short, 2 = long) */
698 FALSE
, /* pc_relative */
700 complain_overflow_signed
, /* complain_on_overflow */
701 ppc64_elf_unhandled_reloc
, /* special_function */
702 "R_PPC64_PLT16_HI", /* name */
703 FALSE
, /* partial_inplace */
705 0xffff, /* dst_mask */
706 FALSE
), /* pcrel_offset */
708 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
710 HOWTO (R_PPC64_PLT16_HA
, /* type */
712 1, /* size (0 = byte, 1 = short, 2 = long) */
714 FALSE
, /* pc_relative */
716 complain_overflow_signed
, /* complain_on_overflow */
717 ppc64_elf_unhandled_reloc
, /* special_function */
718 "R_PPC64_PLT16_HA", /* name */
719 FALSE
, /* partial_inplace */
721 0xffff, /* dst_mask */
722 FALSE
), /* pcrel_offset */
724 /* 16-bit section relative relocation. */
725 HOWTO (R_PPC64_SECTOFF
, /* type */
727 1, /* size (0 = byte, 1 = short, 2 = long) */
729 FALSE
, /* pc_relative */
731 complain_overflow_bitfield
, /* complain_on_overflow */
732 ppc64_elf_sectoff_reloc
, /* special_function */
733 "R_PPC64_SECTOFF", /* name */
734 FALSE
, /* partial_inplace */
736 0xffff, /* dst_mask */
737 FALSE
), /* pcrel_offset */
739 /* Like R_PPC64_SECTOFF, but no overflow warning. */
740 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
742 1, /* size (0 = byte, 1 = short, 2 = long) */
744 FALSE
, /* pc_relative */
746 complain_overflow_dont
, /* complain_on_overflow */
747 ppc64_elf_sectoff_reloc
, /* special_function */
748 "R_PPC64_SECTOFF_LO", /* name */
749 FALSE
, /* partial_inplace */
751 0xffff, /* dst_mask */
752 FALSE
), /* pcrel_offset */
754 /* 16-bit upper half section relative relocation. */
755 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
757 1, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE
, /* pc_relative */
761 complain_overflow_signed
, /* complain_on_overflow */
762 ppc64_elf_sectoff_reloc
, /* special_function */
763 "R_PPC64_SECTOFF_HI", /* name */
764 FALSE
, /* partial_inplace */
766 0xffff, /* dst_mask */
767 FALSE
), /* pcrel_offset */
769 /* 16-bit upper half adjusted section relative relocation. */
770 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
772 1, /* size (0 = byte, 1 = short, 2 = long) */
774 FALSE
, /* pc_relative */
776 complain_overflow_signed
, /* complain_on_overflow */
777 ppc64_elf_sectoff_ha_reloc
, /* special_function */
778 "R_PPC64_SECTOFF_HA", /* name */
779 FALSE
, /* partial_inplace */
781 0xffff, /* dst_mask */
782 FALSE
), /* pcrel_offset */
784 /* Like R_PPC64_REL24 without touching the two least significant bits. */
785 HOWTO (R_PPC64_REL30
, /* type */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
789 TRUE
, /* pc_relative */
791 complain_overflow_dont
, /* complain_on_overflow */
792 bfd_elf_generic_reloc
, /* special_function */
793 "R_PPC64_REL30", /* name */
794 FALSE
, /* partial_inplace */
796 0xfffffffc, /* dst_mask */
797 TRUE
), /* pcrel_offset */
799 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
801 /* A standard 64-bit relocation. */
802 HOWTO (R_PPC64_ADDR64
, /* type */
804 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
806 FALSE
, /* pc_relative */
808 complain_overflow_dont
, /* complain_on_overflow */
809 bfd_elf_generic_reloc
, /* special_function */
810 "R_PPC64_ADDR64", /* name */
811 FALSE
, /* partial_inplace */
813 ONES (64), /* dst_mask */
814 FALSE
), /* pcrel_offset */
816 /* The bits 32-47 of an address. */
817 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
819 1, /* size (0 = byte, 1 = short, 2 = long) */
821 FALSE
, /* pc_relative */
823 complain_overflow_dont
, /* complain_on_overflow */
824 bfd_elf_generic_reloc
, /* special_function */
825 "R_PPC64_ADDR16_HIGHER", /* name */
826 FALSE
, /* partial_inplace */
828 0xffff, /* dst_mask */
829 FALSE
), /* pcrel_offset */
831 /* The bits 32-47 of an address, plus 1 if the contents of the low
832 16 bits, treated as a signed number, is negative. */
833 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
835 1, /* size (0 = byte, 1 = short, 2 = long) */
837 FALSE
, /* pc_relative */
839 complain_overflow_dont
, /* complain_on_overflow */
840 ppc64_elf_ha_reloc
, /* special_function */
841 "R_PPC64_ADDR16_HIGHERA", /* name */
842 FALSE
, /* partial_inplace */
844 0xffff, /* dst_mask */
845 FALSE
), /* pcrel_offset */
847 /* The bits 48-63 of an address. */
848 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
852 FALSE
, /* pc_relative */
854 complain_overflow_dont
, /* complain_on_overflow */
855 bfd_elf_generic_reloc
, /* special_function */
856 "R_PPC64_ADDR16_HIGHEST", /* name */
857 FALSE
, /* partial_inplace */
859 0xffff, /* dst_mask */
860 FALSE
), /* pcrel_offset */
862 /* The bits 48-63 of an address, plus 1 if the contents of the low
863 16 bits, treated as a signed number, is negative. */
864 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
868 FALSE
, /* pc_relative */
870 complain_overflow_dont
, /* complain_on_overflow */
871 ppc64_elf_ha_reloc
, /* special_function */
872 "R_PPC64_ADDR16_HIGHESTA", /* name */
873 FALSE
, /* partial_inplace */
875 0xffff, /* dst_mask */
876 FALSE
), /* pcrel_offset */
878 /* Like ADDR64, but may be unaligned. */
879 HOWTO (R_PPC64_UADDR64
, /* type */
881 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
883 FALSE
, /* pc_relative */
885 complain_overflow_dont
, /* complain_on_overflow */
886 bfd_elf_generic_reloc
, /* special_function */
887 "R_PPC64_UADDR64", /* name */
888 FALSE
, /* partial_inplace */
890 ONES (64), /* dst_mask */
891 FALSE
), /* pcrel_offset */
893 /* 64-bit relative relocation. */
894 HOWTO (R_PPC64_REL64
, /* type */
896 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
898 TRUE
, /* pc_relative */
900 complain_overflow_dont
, /* complain_on_overflow */
901 bfd_elf_generic_reloc
, /* special_function */
902 "R_PPC64_REL64", /* name */
903 FALSE
, /* partial_inplace */
905 ONES (64), /* dst_mask */
906 TRUE
), /* pcrel_offset */
908 /* 64-bit relocation to the symbol's procedure linkage table. */
909 HOWTO (R_PPC64_PLT64
, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 FALSE
, /* pc_relative */
915 complain_overflow_dont
, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc
, /* special_function */
917 "R_PPC64_PLT64", /* name */
918 FALSE
, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 FALSE
), /* pcrel_offset */
923 /* 64-bit PC relative relocation to the symbol's procedure linkage
925 /* FIXME: R_PPC64_PLTREL64 not supported. */
926 HOWTO (R_PPC64_PLTREL64
, /* type */
928 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
930 TRUE
, /* pc_relative */
932 complain_overflow_dont
, /* complain_on_overflow */
933 ppc64_elf_unhandled_reloc
, /* special_function */
934 "R_PPC64_PLTREL64", /* name */
935 FALSE
, /* partial_inplace */
937 ONES (64), /* dst_mask */
938 TRUE
), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation. */
942 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
943 HOWTO (R_PPC64_TOC16
, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE
, /* pc_relative */
949 complain_overflow_signed
, /* complain_on_overflow */
950 ppc64_elf_toc_reloc
, /* special_function */
951 "R_PPC64_TOC16", /* name */
952 FALSE
, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE
), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation without overflow. */
959 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_LO
, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE
, /* pc_relative */
966 complain_overflow_dont
, /* complain_on_overflow */
967 ppc64_elf_toc_reloc
, /* special_function */
968 "R_PPC64_TOC16_LO", /* name */
969 FALSE
, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE
), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits. */
976 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
977 HOWTO (R_PPC64_TOC16_HI
, /* type */
979 1, /* size (0 = byte, 1 = short, 2 = long) */
981 FALSE
, /* pc_relative */
983 complain_overflow_signed
, /* complain_on_overflow */
984 ppc64_elf_toc_reloc
, /* special_function */
985 "R_PPC64_TOC16_HI", /* name */
986 FALSE
, /* partial_inplace */
988 0xffff, /* dst_mask */
989 FALSE
), /* pcrel_offset */
991 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
992 contents of the low 16 bits, treated as a signed number, is
995 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
996 HOWTO (R_PPC64_TOC16_HA
, /* type */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
1000 FALSE
, /* pc_relative */
1002 complain_overflow_signed
, /* complain_on_overflow */
1003 ppc64_elf_toc_ha_reloc
, /* special_function */
1004 "R_PPC64_TOC16_HA", /* name */
1005 FALSE
, /* partial_inplace */
1007 0xffff, /* dst_mask */
1008 FALSE
), /* pcrel_offset */
1010 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1012 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1013 HOWTO (R_PPC64_TOC
, /* type */
1015 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1017 FALSE
, /* pc_relative */
1019 complain_overflow_bitfield
, /* complain_on_overflow */
1020 ppc64_elf_toc64_reloc
, /* special_function */
1021 "R_PPC64_TOC", /* name */
1022 FALSE
, /* partial_inplace */
1024 ONES (64), /* dst_mask */
1025 FALSE
), /* pcrel_offset */
1027 /* Like R_PPC64_GOT16, but also informs the link editor that the
1028 value to relocate may (!) refer to a PLT entry which the link
1029 editor (a) may replace with the symbol value. If the link editor
1030 is unable to fully resolve the symbol, it may (b) create a PLT
1031 entry and store the address to the new PLT entry in the GOT.
1032 This permits lazy resolution of function symbols at run time.
1033 The link editor may also skip all of this and just (c) emit a
1034 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1035 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1036 HOWTO (R_PPC64_PLTGOT16
, /* type */
1038 1, /* size (0 = byte, 1 = short, 2 = long) */
1040 FALSE
, /* pc_relative */
1042 complain_overflow_signed
, /* complain_on_overflow */
1043 ppc64_elf_unhandled_reloc
, /* special_function */
1044 "R_PPC64_PLTGOT16", /* name */
1045 FALSE
, /* partial_inplace */
1047 0xffff, /* dst_mask */
1048 FALSE
), /* pcrel_offset */
1050 /* Like R_PPC64_PLTGOT16, but without overflow. */
1051 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1052 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1054 1, /* size (0 = byte, 1 = short, 2 = long) */
1056 FALSE
, /* pc_relative */
1058 complain_overflow_dont
, /* complain_on_overflow */
1059 ppc64_elf_unhandled_reloc
, /* special_function */
1060 "R_PPC64_PLTGOT16_LO", /* name */
1061 FALSE
, /* partial_inplace */
1063 0xffff, /* dst_mask */
1064 FALSE
), /* pcrel_offset */
1066 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1067 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1068 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1069 16, /* rightshift */
1070 1, /* size (0 = byte, 1 = short, 2 = long) */
1072 FALSE
, /* pc_relative */
1074 complain_overflow_signed
, /* complain_on_overflow */
1075 ppc64_elf_unhandled_reloc
, /* special_function */
1076 "R_PPC64_PLTGOT16_HI", /* name */
1077 FALSE
, /* partial_inplace */
1079 0xffff, /* dst_mask */
1080 FALSE
), /* pcrel_offset */
1082 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1083 1 if the contents of the low 16 bits, treated as a signed number,
1085 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1086 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1087 16, /* rightshift */
1088 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 FALSE
, /* pc_relative */
1092 complain_overflow_signed
, /* complain_on_overflow */
1093 ppc64_elf_unhandled_reloc
, /* special_function */
1094 "R_PPC64_PLTGOT16_HA", /* name */
1095 FALSE
, /* partial_inplace */
1097 0xffff, /* dst_mask */
1098 FALSE
), /* pcrel_offset */
1100 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1101 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1103 1, /* size (0 = byte, 1 = short, 2 = long) */
1105 FALSE
, /* pc_relative */
1107 complain_overflow_bitfield
, /* complain_on_overflow */
1108 bfd_elf_generic_reloc
, /* special_function */
1109 "R_PPC64_ADDR16_DS", /* name */
1110 FALSE
, /* partial_inplace */
1112 0xfffc, /* dst_mask */
1113 FALSE
), /* pcrel_offset */
1115 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1116 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1120 FALSE
, /* pc_relative */
1122 complain_overflow_dont
,/* complain_on_overflow */
1123 bfd_elf_generic_reloc
, /* special_function */
1124 "R_PPC64_ADDR16_LO_DS",/* name */
1125 FALSE
, /* partial_inplace */
1127 0xfffc, /* dst_mask */
1128 FALSE
), /* pcrel_offset */
1130 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1131 HOWTO (R_PPC64_GOT16_DS
, /* type */
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1135 FALSE
, /* pc_relative */
1137 complain_overflow_signed
, /* complain_on_overflow */
1138 ppc64_elf_unhandled_reloc
, /* special_function */
1139 "R_PPC64_GOT16_DS", /* name */
1140 FALSE
, /* partial_inplace */
1142 0xfffc, /* dst_mask */
1143 FALSE
), /* pcrel_offset */
1145 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1146 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1150 FALSE
, /* pc_relative */
1152 complain_overflow_dont
, /* complain_on_overflow */
1153 ppc64_elf_unhandled_reloc
, /* special_function */
1154 "R_PPC64_GOT16_LO_DS", /* name */
1155 FALSE
, /* partial_inplace */
1157 0xfffc, /* dst_mask */
1158 FALSE
), /* pcrel_offset */
1160 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1161 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1165 FALSE
, /* pc_relative */
1167 complain_overflow_dont
, /* complain_on_overflow */
1168 ppc64_elf_unhandled_reloc
, /* special_function */
1169 "R_PPC64_PLT16_LO_DS", /* name */
1170 FALSE
, /* partial_inplace */
1172 0xfffc, /* dst_mask */
1173 FALSE
), /* pcrel_offset */
1175 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1176 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1178 1, /* size (0 = byte, 1 = short, 2 = long) */
1180 FALSE
, /* pc_relative */
1182 complain_overflow_bitfield
, /* complain_on_overflow */
1183 ppc64_elf_sectoff_reloc
, /* special_function */
1184 "R_PPC64_SECTOFF_DS", /* name */
1185 FALSE
, /* partial_inplace */
1187 0xfffc, /* dst_mask */
1188 FALSE
), /* pcrel_offset */
1190 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1191 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1193 1, /* size (0 = byte, 1 = short, 2 = long) */
1195 FALSE
, /* pc_relative */
1197 complain_overflow_dont
, /* complain_on_overflow */
1198 ppc64_elf_sectoff_reloc
, /* special_function */
1199 "R_PPC64_SECTOFF_LO_DS",/* name */
1200 FALSE
, /* partial_inplace */
1202 0xfffc, /* dst_mask */
1203 FALSE
), /* pcrel_offset */
1205 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1206 HOWTO (R_PPC64_TOC16_DS
, /* type */
1208 1, /* size (0 = byte, 1 = short, 2 = long) */
1210 FALSE
, /* pc_relative */
1212 complain_overflow_signed
, /* complain_on_overflow */
1213 ppc64_elf_toc_reloc
, /* special_function */
1214 "R_PPC64_TOC16_DS", /* name */
1215 FALSE
, /* partial_inplace */
1217 0xfffc, /* dst_mask */
1218 FALSE
), /* pcrel_offset */
1220 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1221 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1223 1, /* size (0 = byte, 1 = short, 2 = long) */
1225 FALSE
, /* pc_relative */
1227 complain_overflow_dont
, /* complain_on_overflow */
1228 ppc64_elf_toc_reloc
, /* special_function */
1229 "R_PPC64_TOC16_LO_DS", /* name */
1230 FALSE
, /* partial_inplace */
1232 0xfffc, /* dst_mask */
1233 FALSE
), /* pcrel_offset */
1235 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1236 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1237 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1239 1, /* size (0 = byte, 1 = short, 2 = long) */
1241 FALSE
, /* pc_relative */
1243 complain_overflow_signed
, /* complain_on_overflow */
1244 ppc64_elf_unhandled_reloc
, /* special_function */
1245 "R_PPC64_PLTGOT16_DS", /* name */
1246 FALSE
, /* partial_inplace */
1248 0xfffc, /* dst_mask */
1249 FALSE
), /* pcrel_offset */
1251 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1252 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1253 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1255 1, /* size (0 = byte, 1 = short, 2 = long) */
1257 FALSE
, /* pc_relative */
1259 complain_overflow_dont
, /* complain_on_overflow */
1260 ppc64_elf_unhandled_reloc
, /* special_function */
1261 "R_PPC64_PLTGOT16_LO_DS",/* name */
1262 FALSE
, /* partial_inplace */
1264 0xfffc, /* dst_mask */
1265 FALSE
), /* pcrel_offset */
1267 /* Marker relocs for TLS. */
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE
, /* pc_relative */
1274 complain_overflow_dont
, /* complain_on_overflow */
1275 bfd_elf_generic_reloc
, /* special_function */
1276 "R_PPC64_TLS", /* name */
1277 FALSE
, /* partial_inplace */
1280 FALSE
), /* pcrel_offset */
1282 HOWTO (R_PPC64_TLSGD
,
1284 2, /* size (0 = byte, 1 = short, 2 = long) */
1286 FALSE
, /* pc_relative */
1288 complain_overflow_dont
, /* complain_on_overflow */
1289 bfd_elf_generic_reloc
, /* special_function */
1290 "R_PPC64_TLSGD", /* name */
1291 FALSE
, /* partial_inplace */
1294 FALSE
), /* pcrel_offset */
1296 HOWTO (R_PPC64_TLSLD
,
1298 2, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE
, /* pc_relative */
1302 complain_overflow_dont
, /* complain_on_overflow */
1303 bfd_elf_generic_reloc
, /* special_function */
1304 "R_PPC64_TLSLD", /* name */
1305 FALSE
, /* partial_inplace */
1308 FALSE
), /* pcrel_offset */
1310 HOWTO (R_PPC64_TOCSAVE
,
1312 2, /* size (0 = byte, 1 = short, 2 = long) */
1314 FALSE
, /* pc_relative */
1316 complain_overflow_dont
, /* complain_on_overflow */
1317 bfd_elf_generic_reloc
, /* special_function */
1318 "R_PPC64_TOCSAVE", /* name */
1319 FALSE
, /* partial_inplace */
1322 FALSE
), /* pcrel_offset */
1324 /* Computes the load module index of the load module that contains the
1325 definition of its TLS sym. */
1326 HOWTO (R_PPC64_DTPMOD64
,
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE
, /* pc_relative */
1332 complain_overflow_dont
, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc
, /* special_function */
1334 "R_PPC64_DTPMOD64", /* name */
1335 FALSE
, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE
), /* pcrel_offset */
1340 /* Computes a dtv-relative displacement, the difference between the value
1341 of sym+add and the base address of the thread-local storage block that
1342 contains the definition of sym, minus 0x8000. */
1343 HOWTO (R_PPC64_DTPREL64
,
1345 4, /* size (0 = byte, 1 = short, 2 = long) */
1347 FALSE
, /* pc_relative */
1349 complain_overflow_dont
, /* complain_on_overflow */
1350 ppc64_elf_unhandled_reloc
, /* special_function */
1351 "R_PPC64_DTPREL64", /* name */
1352 FALSE
, /* partial_inplace */
1354 ONES (64), /* dst_mask */
1355 FALSE
), /* pcrel_offset */
1357 /* A 16 bit dtprel reloc. */
1358 HOWTO (R_PPC64_DTPREL16
,
1360 1, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE
, /* pc_relative */
1364 complain_overflow_signed
, /* complain_on_overflow */
1365 ppc64_elf_unhandled_reloc
, /* special_function */
1366 "R_PPC64_DTPREL16", /* name */
1367 FALSE
, /* partial_inplace */
1369 0xffff, /* dst_mask */
1370 FALSE
), /* pcrel_offset */
1372 /* Like DTPREL16, but no overflow. */
1373 HOWTO (R_PPC64_DTPREL16_LO
,
1375 1, /* size (0 = byte, 1 = short, 2 = long) */
1377 FALSE
, /* pc_relative */
1379 complain_overflow_dont
, /* complain_on_overflow */
1380 ppc64_elf_unhandled_reloc
, /* special_function */
1381 "R_PPC64_DTPREL16_LO", /* name */
1382 FALSE
, /* partial_inplace */
1384 0xffff, /* dst_mask */
1385 FALSE
), /* pcrel_offset */
1387 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1388 HOWTO (R_PPC64_DTPREL16_HI
,
1389 16, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE
, /* pc_relative */
1394 complain_overflow_signed
, /* complain_on_overflow */
1395 ppc64_elf_unhandled_reloc
, /* special_function */
1396 "R_PPC64_DTPREL16_HI", /* name */
1397 FALSE
, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 FALSE
), /* pcrel_offset */
1402 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1403 HOWTO (R_PPC64_DTPREL16_HA
,
1404 16, /* rightshift */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 FALSE
, /* pc_relative */
1409 complain_overflow_signed
, /* complain_on_overflow */
1410 ppc64_elf_unhandled_reloc
, /* special_function */
1411 "R_PPC64_DTPREL16_HA", /* name */
1412 FALSE
, /* partial_inplace */
1414 0xffff, /* dst_mask */
1415 FALSE
), /* pcrel_offset */
1417 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1418 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1419 32, /* rightshift */
1420 1, /* size (0 = byte, 1 = short, 2 = long) */
1422 FALSE
, /* pc_relative */
1424 complain_overflow_dont
, /* complain_on_overflow */
1425 ppc64_elf_unhandled_reloc
, /* special_function */
1426 "R_PPC64_DTPREL16_HIGHER", /* name */
1427 FALSE
, /* partial_inplace */
1429 0xffff, /* dst_mask */
1430 FALSE
), /* pcrel_offset */
1432 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1433 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1434 32, /* rightshift */
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_HIGHERA", /* name */
1442 FALSE
, /* partial_inplace */
1444 0xffff, /* dst_mask */
1445 FALSE
), /* pcrel_offset */
1447 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1448 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1449 48, /* rightshift */
1450 1, /* size (0 = byte, 1 = short, 2 = long) */
1452 FALSE
, /* pc_relative */
1454 complain_overflow_dont
, /* complain_on_overflow */
1455 ppc64_elf_unhandled_reloc
, /* special_function */
1456 "R_PPC64_DTPREL16_HIGHEST", /* name */
1457 FALSE
, /* partial_inplace */
1459 0xffff, /* dst_mask */
1460 FALSE
), /* pcrel_offset */
1462 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1463 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1464 48, /* rightshift */
1465 1, /* size (0 = byte, 1 = short, 2 = long) */
1467 FALSE
, /* pc_relative */
1469 complain_overflow_dont
, /* complain_on_overflow */
1470 ppc64_elf_unhandled_reloc
, /* special_function */
1471 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1472 FALSE
, /* partial_inplace */
1474 0xffff, /* dst_mask */
1475 FALSE
), /* pcrel_offset */
1477 /* Like DTPREL16, but for insns with a DS field. */
1478 HOWTO (R_PPC64_DTPREL16_DS
,
1480 1, /* size (0 = byte, 1 = short, 2 = long) */
1482 FALSE
, /* pc_relative */
1484 complain_overflow_signed
, /* complain_on_overflow */
1485 ppc64_elf_unhandled_reloc
, /* special_function */
1486 "R_PPC64_DTPREL16_DS", /* name */
1487 FALSE
, /* partial_inplace */
1489 0xfffc, /* dst_mask */
1490 FALSE
), /* pcrel_offset */
1492 /* Like DTPREL16_DS, but no overflow. */
1493 HOWTO (R_PPC64_DTPREL16_LO_DS
,
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_LO_DS", /* name */
1502 FALSE
, /* partial_inplace */
1504 0xfffc, /* dst_mask */
1505 FALSE
), /* pcrel_offset */
1507 /* Computes a tp-relative displacement, the difference between the value of
1508 sym+add and the value of the thread pointer (r13). */
1509 HOWTO (R_PPC64_TPREL64
,
1511 4, /* size (0 = byte, 1 = short, 2 = long) */
1513 FALSE
, /* pc_relative */
1515 complain_overflow_dont
, /* complain_on_overflow */
1516 ppc64_elf_unhandled_reloc
, /* special_function */
1517 "R_PPC64_TPREL64", /* name */
1518 FALSE
, /* partial_inplace */
1520 ONES (64), /* dst_mask */
1521 FALSE
), /* pcrel_offset */
1523 /* A 16 bit tprel reloc. */
1524 HOWTO (R_PPC64_TPREL16
,
1526 1, /* size (0 = byte, 1 = short, 2 = long) */
1528 FALSE
, /* pc_relative */
1530 complain_overflow_signed
, /* complain_on_overflow */
1531 ppc64_elf_unhandled_reloc
, /* special_function */
1532 "R_PPC64_TPREL16", /* name */
1533 FALSE
, /* partial_inplace */
1535 0xffff, /* dst_mask */
1536 FALSE
), /* pcrel_offset */
1538 /* Like TPREL16, but no overflow. */
1539 HOWTO (R_PPC64_TPREL16_LO
,
1541 1, /* size (0 = byte, 1 = short, 2 = long) */
1543 FALSE
, /* pc_relative */
1545 complain_overflow_dont
, /* complain_on_overflow */
1546 ppc64_elf_unhandled_reloc
, /* special_function */
1547 "R_PPC64_TPREL16_LO", /* name */
1548 FALSE
, /* partial_inplace */
1550 0xffff, /* dst_mask */
1551 FALSE
), /* pcrel_offset */
1553 /* Like TPREL16_LO, but next higher group of 16 bits. */
1554 HOWTO (R_PPC64_TPREL16_HI
,
1555 16, /* rightshift */
1556 1, /* size (0 = byte, 1 = short, 2 = long) */
1558 FALSE
, /* pc_relative */
1560 complain_overflow_signed
, /* complain_on_overflow */
1561 ppc64_elf_unhandled_reloc
, /* special_function */
1562 "R_PPC64_TPREL16_HI", /* name */
1563 FALSE
, /* partial_inplace */
1565 0xffff, /* dst_mask */
1566 FALSE
), /* pcrel_offset */
1568 /* Like TPREL16_HI, but adjust for low 16 bits. */
1569 HOWTO (R_PPC64_TPREL16_HA
,
1570 16, /* rightshift */
1571 1, /* size (0 = byte, 1 = short, 2 = long) */
1573 FALSE
, /* pc_relative */
1575 complain_overflow_signed
, /* complain_on_overflow */
1576 ppc64_elf_unhandled_reloc
, /* special_function */
1577 "R_PPC64_TPREL16_HA", /* name */
1578 FALSE
, /* partial_inplace */
1580 0xffff, /* dst_mask */
1581 FALSE
), /* pcrel_offset */
1583 /* Like TPREL16_HI, but next higher group of 16 bits. */
1584 HOWTO (R_PPC64_TPREL16_HIGHER
,
1585 32, /* rightshift */
1586 1, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE
, /* pc_relative */
1590 complain_overflow_dont
, /* complain_on_overflow */
1591 ppc64_elf_unhandled_reloc
, /* special_function */
1592 "R_PPC64_TPREL16_HIGHER", /* name */
1593 FALSE
, /* partial_inplace */
1595 0xffff, /* dst_mask */
1596 FALSE
), /* pcrel_offset */
1598 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1599 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1600 32, /* rightshift */
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_HIGHERA", /* name */
1608 FALSE
, /* partial_inplace */
1610 0xffff, /* dst_mask */
1611 FALSE
), /* pcrel_offset */
1613 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1614 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1615 48, /* rightshift */
1616 1, /* size (0 = byte, 1 = short, 2 = long) */
1618 FALSE
, /* pc_relative */
1620 complain_overflow_dont
, /* complain_on_overflow */
1621 ppc64_elf_unhandled_reloc
, /* special_function */
1622 "R_PPC64_TPREL16_HIGHEST", /* name */
1623 FALSE
, /* partial_inplace */
1625 0xffff, /* dst_mask */
1626 FALSE
), /* pcrel_offset */
1628 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1629 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1630 48, /* rightshift */
1631 1, /* size (0 = byte, 1 = short, 2 = long) */
1633 FALSE
, /* pc_relative */
1635 complain_overflow_dont
, /* complain_on_overflow */
1636 ppc64_elf_unhandled_reloc
, /* special_function */
1637 "R_PPC64_TPREL16_HIGHESTA", /* name */
1638 FALSE
, /* partial_inplace */
1640 0xffff, /* dst_mask */
1641 FALSE
), /* pcrel_offset */
1643 /* Like TPREL16, but for insns with a DS field. */
1644 HOWTO (R_PPC64_TPREL16_DS
,
1646 1, /* size (0 = byte, 1 = short, 2 = long) */
1648 FALSE
, /* pc_relative */
1650 complain_overflow_signed
, /* complain_on_overflow */
1651 ppc64_elf_unhandled_reloc
, /* special_function */
1652 "R_PPC64_TPREL16_DS", /* name */
1653 FALSE
, /* partial_inplace */
1655 0xfffc, /* dst_mask */
1656 FALSE
), /* pcrel_offset */
1658 /* Like TPREL16_DS, but no overflow. */
1659 HOWTO (R_PPC64_TPREL16_LO_DS
,
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_LO_DS", /* name */
1668 FALSE
, /* partial_inplace */
1670 0xfffc, /* dst_mask */
1671 FALSE
), /* pcrel_offset */
1673 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1674 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1675 to the first entry relative to the TOC base (r2). */
1676 HOWTO (R_PPC64_GOT_TLSGD16
,
1678 1, /* size (0 = byte, 1 = short, 2 = long) */
1680 FALSE
, /* pc_relative */
1682 complain_overflow_signed
, /* complain_on_overflow */
1683 ppc64_elf_unhandled_reloc
, /* special_function */
1684 "R_PPC64_GOT_TLSGD16", /* name */
1685 FALSE
, /* partial_inplace */
1687 0xffff, /* dst_mask */
1688 FALSE
), /* pcrel_offset */
1690 /* Like GOT_TLSGD16, but no overflow. */
1691 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1693 1, /* size (0 = byte, 1 = short, 2 = long) */
1695 FALSE
, /* pc_relative */
1697 complain_overflow_dont
, /* complain_on_overflow */
1698 ppc64_elf_unhandled_reloc
, /* special_function */
1699 "R_PPC64_GOT_TLSGD16_LO", /* name */
1700 FALSE
, /* partial_inplace */
1702 0xffff, /* dst_mask */
1703 FALSE
), /* pcrel_offset */
1705 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1706 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1707 16, /* rightshift */
1708 1, /* size (0 = byte, 1 = short, 2 = long) */
1710 FALSE
, /* pc_relative */
1712 complain_overflow_signed
, /* complain_on_overflow */
1713 ppc64_elf_unhandled_reloc
, /* special_function */
1714 "R_PPC64_GOT_TLSGD16_HI", /* name */
1715 FALSE
, /* partial_inplace */
1717 0xffff, /* dst_mask */
1718 FALSE
), /* pcrel_offset */
1720 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1721 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1722 16, /* rightshift */
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE
, /* pc_relative */
1727 complain_overflow_signed
, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc
, /* special_function */
1729 "R_PPC64_GOT_TLSGD16_HA", /* name */
1730 FALSE
, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE
), /* pcrel_offset */
1735 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1736 with values (sym+add)@dtpmod and zero, and computes the offset to the
1737 first entry relative to the TOC base (r2). */
1738 HOWTO (R_PPC64_GOT_TLSLD16
,
1740 1, /* size (0 = byte, 1 = short, 2 = long) */
1742 FALSE
, /* pc_relative */
1744 complain_overflow_signed
, /* complain_on_overflow */
1745 ppc64_elf_unhandled_reloc
, /* special_function */
1746 "R_PPC64_GOT_TLSLD16", /* name */
1747 FALSE
, /* partial_inplace */
1749 0xffff, /* dst_mask */
1750 FALSE
), /* pcrel_offset */
1752 /* Like GOT_TLSLD16, but no overflow. */
1753 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1755 1, /* size (0 = byte, 1 = short, 2 = long) */
1757 FALSE
, /* pc_relative */
1759 complain_overflow_dont
, /* complain_on_overflow */
1760 ppc64_elf_unhandled_reloc
, /* special_function */
1761 "R_PPC64_GOT_TLSLD16_LO", /* name */
1762 FALSE
, /* partial_inplace */
1764 0xffff, /* dst_mask */
1765 FALSE
), /* pcrel_offset */
1767 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1768 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1769 16, /* rightshift */
1770 1, /* size (0 = byte, 1 = short, 2 = long) */
1772 FALSE
, /* pc_relative */
1774 complain_overflow_signed
, /* complain_on_overflow */
1775 ppc64_elf_unhandled_reloc
, /* special_function */
1776 "R_PPC64_GOT_TLSLD16_HI", /* name */
1777 FALSE
, /* partial_inplace */
1779 0xffff, /* dst_mask */
1780 FALSE
), /* pcrel_offset */
1782 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1783 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1784 16, /* rightshift */
1785 1, /* size (0 = byte, 1 = short, 2 = long) */
1787 FALSE
, /* pc_relative */
1789 complain_overflow_signed
, /* complain_on_overflow */
1790 ppc64_elf_unhandled_reloc
, /* special_function */
1791 "R_PPC64_GOT_TLSLD16_HA", /* name */
1792 FALSE
, /* partial_inplace */
1794 0xffff, /* dst_mask */
1795 FALSE
), /* pcrel_offset */
1797 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1798 the offset to the entry relative to the TOC base (r2). */
1799 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1801 1, /* size (0 = byte, 1 = short, 2 = long) */
1803 FALSE
, /* pc_relative */
1805 complain_overflow_signed
, /* complain_on_overflow */
1806 ppc64_elf_unhandled_reloc
, /* special_function */
1807 "R_PPC64_GOT_DTPREL16_DS", /* name */
1808 FALSE
, /* partial_inplace */
1810 0xfffc, /* dst_mask */
1811 FALSE
), /* pcrel_offset */
1813 /* Like GOT_DTPREL16_DS, but no overflow. */
1814 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1816 1, /* size (0 = byte, 1 = short, 2 = long) */
1818 FALSE
, /* pc_relative */
1820 complain_overflow_dont
, /* complain_on_overflow */
1821 ppc64_elf_unhandled_reloc
, /* special_function */
1822 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1823 FALSE
, /* partial_inplace */
1825 0xfffc, /* dst_mask */
1826 FALSE
), /* pcrel_offset */
1828 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1829 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1830 16, /* rightshift */
1831 1, /* size (0 = byte, 1 = short, 2 = long) */
1833 FALSE
, /* pc_relative */
1835 complain_overflow_signed
, /* complain_on_overflow */
1836 ppc64_elf_unhandled_reloc
, /* special_function */
1837 "R_PPC64_GOT_DTPREL16_HI", /* name */
1838 FALSE
, /* partial_inplace */
1840 0xffff, /* dst_mask */
1841 FALSE
), /* pcrel_offset */
1843 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1844 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1845 16, /* rightshift */
1846 1, /* size (0 = byte, 1 = short, 2 = long) */
1848 FALSE
, /* pc_relative */
1850 complain_overflow_signed
, /* complain_on_overflow */
1851 ppc64_elf_unhandled_reloc
, /* special_function */
1852 "R_PPC64_GOT_DTPREL16_HA", /* name */
1853 FALSE
, /* partial_inplace */
1855 0xffff, /* dst_mask */
1856 FALSE
), /* pcrel_offset */
1858 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1859 offset to the entry relative to the TOC base (r2). */
1860 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1862 1, /* size (0 = byte, 1 = short, 2 = long) */
1864 FALSE
, /* pc_relative */
1866 complain_overflow_signed
, /* complain_on_overflow */
1867 ppc64_elf_unhandled_reloc
, /* special_function */
1868 "R_PPC64_GOT_TPREL16_DS", /* name */
1869 FALSE
, /* partial_inplace */
1871 0xfffc, /* dst_mask */
1872 FALSE
), /* pcrel_offset */
1874 /* Like GOT_TPREL16_DS, but no overflow. */
1875 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1877 1, /* size (0 = byte, 1 = short, 2 = long) */
1879 FALSE
, /* pc_relative */
1881 complain_overflow_dont
, /* complain_on_overflow */
1882 ppc64_elf_unhandled_reloc
, /* special_function */
1883 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1884 FALSE
, /* partial_inplace */
1886 0xfffc, /* dst_mask */
1887 FALSE
), /* pcrel_offset */
1889 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1890 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1891 16, /* rightshift */
1892 1, /* size (0 = byte, 1 = short, 2 = long) */
1894 FALSE
, /* pc_relative */
1896 complain_overflow_signed
, /* complain_on_overflow */
1897 ppc64_elf_unhandled_reloc
, /* special_function */
1898 "R_PPC64_GOT_TPREL16_HI", /* name */
1899 FALSE
, /* partial_inplace */
1901 0xffff, /* dst_mask */
1902 FALSE
), /* pcrel_offset */
1904 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1905 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1906 16, /* rightshift */
1907 1, /* size (0 = byte, 1 = short, 2 = long) */
1909 FALSE
, /* pc_relative */
1911 complain_overflow_signed
, /* complain_on_overflow */
1912 ppc64_elf_unhandled_reloc
, /* special_function */
1913 "R_PPC64_GOT_TPREL16_HA", /* name */
1914 FALSE
, /* partial_inplace */
1916 0xffff, /* dst_mask */
1917 FALSE
), /* pcrel_offset */
1919 HOWTO (R_PPC64_JMP_IREL
, /* type */
1921 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1923 FALSE
, /* pc_relative */
1925 complain_overflow_dont
, /* complain_on_overflow */
1926 ppc64_elf_unhandled_reloc
, /* special_function */
1927 "R_PPC64_JMP_IREL", /* name */
1928 FALSE
, /* partial_inplace */
1931 FALSE
), /* pcrel_offset */
1933 HOWTO (R_PPC64_IRELATIVE
, /* type */
1935 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1937 FALSE
, /* pc_relative */
1939 complain_overflow_dont
, /* complain_on_overflow */
1940 bfd_elf_generic_reloc
, /* special_function */
1941 "R_PPC64_IRELATIVE", /* name */
1942 FALSE
, /* partial_inplace */
1944 ONES (64), /* dst_mask */
1945 FALSE
), /* pcrel_offset */
1947 /* A 16 bit relative relocation. */
1948 HOWTO (R_PPC64_REL16
, /* type */
1950 1, /* size (0 = byte, 1 = short, 2 = long) */
1952 TRUE
, /* pc_relative */
1954 complain_overflow_bitfield
, /* complain_on_overflow */
1955 bfd_elf_generic_reloc
, /* special_function */
1956 "R_PPC64_REL16", /* name */
1957 FALSE
, /* partial_inplace */
1959 0xffff, /* dst_mask */
1960 TRUE
), /* pcrel_offset */
1962 /* A 16 bit relative relocation without overflow. */
1963 HOWTO (R_PPC64_REL16_LO
, /* type */
1965 1, /* size (0 = byte, 1 = short, 2 = long) */
1967 TRUE
, /* pc_relative */
1969 complain_overflow_dont
,/* complain_on_overflow */
1970 bfd_elf_generic_reloc
, /* special_function */
1971 "R_PPC64_REL16_LO", /* name */
1972 FALSE
, /* partial_inplace */
1974 0xffff, /* dst_mask */
1975 TRUE
), /* pcrel_offset */
1977 /* The high order 16 bits of a relative address. */
1978 HOWTO (R_PPC64_REL16_HI
, /* type */
1979 16, /* rightshift */
1980 1, /* size (0 = byte, 1 = short, 2 = long) */
1982 TRUE
, /* pc_relative */
1984 complain_overflow_signed
, /* complain_on_overflow */
1985 bfd_elf_generic_reloc
, /* special_function */
1986 "R_PPC64_REL16_HI", /* name */
1987 FALSE
, /* partial_inplace */
1989 0xffff, /* dst_mask */
1990 TRUE
), /* pcrel_offset */
1992 /* The high order 16 bits of a relative address, plus 1 if the contents of
1993 the low 16 bits, treated as a signed number, is negative. */
1994 HOWTO (R_PPC64_REL16_HA
, /* type */
1995 16, /* rightshift */
1996 1, /* size (0 = byte, 1 = short, 2 = long) */
1998 TRUE
, /* pc_relative */
2000 complain_overflow_signed
, /* complain_on_overflow */
2001 ppc64_elf_ha_reloc
, /* special_function */
2002 "R_PPC64_REL16_HA", /* name */
2003 FALSE
, /* partial_inplace */
2005 0xffff, /* dst_mask */
2006 TRUE
), /* pcrel_offset */
2008 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2009 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2010 16, /* rightshift */
2011 1, /* size (0 = byte, 1 = short, 2 = long) */
2013 FALSE
, /* pc_relative */
2015 complain_overflow_dont
, /* complain_on_overflow */
2016 bfd_elf_generic_reloc
, /* special_function */
2017 "R_PPC64_ADDR16_HIGH", /* name */
2018 FALSE
, /* partial_inplace */
2020 0xffff, /* dst_mask */
2021 FALSE
), /* pcrel_offset */
2023 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2024 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2025 16, /* rightshift */
2026 1, /* size (0 = byte, 1 = short, 2 = long) */
2028 FALSE
, /* pc_relative */
2030 complain_overflow_dont
, /* complain_on_overflow */
2031 ppc64_elf_ha_reloc
, /* special_function */
2032 "R_PPC64_ADDR16_HIGHA", /* name */
2033 FALSE
, /* partial_inplace */
2035 0xffff, /* dst_mask */
2036 FALSE
), /* pcrel_offset */
2038 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2039 HOWTO (R_PPC64_DTPREL16_HIGH
,
2040 16, /* rightshift */
2041 1, /* size (0 = byte, 1 = short, 2 = long) */
2043 FALSE
, /* pc_relative */
2045 complain_overflow_dont
, /* complain_on_overflow */
2046 ppc64_elf_unhandled_reloc
, /* special_function */
2047 "R_PPC64_DTPREL16_HIGH", /* name */
2048 FALSE
, /* partial_inplace */
2050 0xffff, /* dst_mask */
2051 FALSE
), /* pcrel_offset */
2053 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2054 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2055 16, /* rightshift */
2056 1, /* size (0 = byte, 1 = short, 2 = long) */
2058 FALSE
, /* pc_relative */
2060 complain_overflow_dont
, /* complain_on_overflow */
2061 ppc64_elf_unhandled_reloc
, /* special_function */
2062 "R_PPC64_DTPREL16_HIGHA", /* name */
2063 FALSE
, /* partial_inplace */
2065 0xffff, /* dst_mask */
2066 FALSE
), /* pcrel_offset */
2068 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2069 HOWTO (R_PPC64_TPREL16_HIGH
,
2070 16, /* rightshift */
2071 1, /* size (0 = byte, 1 = short, 2 = long) */
2073 FALSE
, /* pc_relative */
2075 complain_overflow_dont
, /* complain_on_overflow */
2076 ppc64_elf_unhandled_reloc
, /* special_function */
2077 "R_PPC64_TPREL16_HIGH", /* name */
2078 FALSE
, /* partial_inplace */
2080 0xffff, /* dst_mask */
2081 FALSE
), /* pcrel_offset */
2083 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2084 HOWTO (R_PPC64_TPREL16_HIGHA
,
2085 16, /* rightshift */
2086 1, /* size (0 = byte, 1 = short, 2 = long) */
2088 FALSE
, /* pc_relative */
2090 complain_overflow_dont
, /* complain_on_overflow */
2091 ppc64_elf_unhandled_reloc
, /* special_function */
2092 "R_PPC64_TPREL16_HIGHA", /* name */
2093 FALSE
, /* partial_inplace */
2095 0xffff, /* dst_mask */
2096 FALSE
), /* pcrel_offset */
2098 /* Like ADDR64, but use local entry point of function. */
2099 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2101 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2103 FALSE
, /* pc_relative */
2105 complain_overflow_dont
, /* complain_on_overflow */
2106 bfd_elf_generic_reloc
, /* special_function */
2107 "R_PPC64_ADDR64_LOCAL", /* name */
2108 FALSE
, /* partial_inplace */
2110 ONES (64), /* dst_mask */
2111 FALSE
), /* pcrel_offset */
2113 /* GNU extension to record C++ vtable hierarchy. */
2114 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2116 0, /* size (0 = byte, 1 = short, 2 = long) */
2118 FALSE
, /* pc_relative */
2120 complain_overflow_dont
, /* complain_on_overflow */
2121 NULL
, /* special_function */
2122 "R_PPC64_GNU_VTINHERIT", /* name */
2123 FALSE
, /* partial_inplace */
2126 FALSE
), /* pcrel_offset */
2128 /* GNU extension to record C++ vtable member usage. */
2129 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2131 0, /* size (0 = byte, 1 = short, 2 = long) */
2133 FALSE
, /* pc_relative */
2135 complain_overflow_dont
, /* complain_on_overflow */
2136 NULL
, /* special_function */
2137 "R_PPC64_GNU_VTENTRY", /* name */
2138 FALSE
, /* partial_inplace */
2141 FALSE
), /* pcrel_offset */
2145 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2149 ppc_howto_init (void)
2151 unsigned int i
, type
;
2154 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2157 type
= ppc64_elf_howto_raw
[i
].type
;
2158 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2159 / sizeof (ppc64_elf_howto_table
[0])));
2160 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2164 static reloc_howto_type
*
2165 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2166 bfd_reloc_code_real_type code
)
2168 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2170 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2171 /* Initialize howto table if needed. */
2179 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2181 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2183 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2185 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2187 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2189 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2191 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2193 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2195 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2197 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2199 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2201 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2203 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2205 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2207 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2209 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2211 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2213 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2215 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2217 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2219 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2221 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2223 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2225 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2227 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2229 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2231 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2233 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2235 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2237 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2239 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2241 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2243 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2245 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2247 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2249 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2251 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2253 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2255 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2257 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2259 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2261 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2263 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2265 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2267 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2269 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2271 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2273 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2275 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2277 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2279 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2281 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2283 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2285 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2287 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2289 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2291 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2293 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2295 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2297 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2299 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2301 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2303 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2305 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2307 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2309 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2311 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2313 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2315 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2317 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2319 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2321 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2323 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2325 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2327 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2329 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2331 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2333 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2335 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2337 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2339 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2341 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2343 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2345 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2347 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2349 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2351 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2353 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2355 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2357 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2359 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2361 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2363 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2365 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2367 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2369 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2371 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2373 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2375 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2377 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2379 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2381 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2383 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2385 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2387 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2389 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2391 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2393 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2395 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2397 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2399 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2401 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2403 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2405 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2409 return ppc64_elf_howto_table
[r
];
2412 static reloc_howto_type
*
2413 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2419 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2421 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2422 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2423 return &ppc64_elf_howto_raw
[i
];
2428 /* Set the howto pointer for a PowerPC ELF reloc. */
2431 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2432 Elf_Internal_Rela
*dst
)
2436 /* Initialize howto table if needed. */
2437 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2440 type
= ELF64_R_TYPE (dst
->r_info
);
2441 if (type
>= (sizeof (ppc64_elf_howto_table
)
2442 / sizeof (ppc64_elf_howto_table
[0])))
2444 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2446 type
= R_PPC64_NONE
;
2448 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2451 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2453 static bfd_reloc_status_type
2454 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2455 void *data
, asection
*input_section
,
2456 bfd
*output_bfd
, char **error_message
)
2458 /* If this is a relocatable link (output_bfd test tells us), just
2459 call the generic function. Any adjustment will be done at final
2461 if (output_bfd
!= NULL
)
2462 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2463 input_section
, output_bfd
, error_message
);
2465 /* Adjust the addend for sign extension of the low 16 bits.
2466 We won't actually be using the low 16 bits, so trashing them
2468 reloc_entry
->addend
+= 0x8000;
2469 return bfd_reloc_continue
;
2472 static bfd_reloc_status_type
2473 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2474 void *data
, asection
*input_section
,
2475 bfd
*output_bfd
, char **error_message
)
2477 if (output_bfd
!= NULL
)
2478 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2479 input_section
, output_bfd
, error_message
);
2481 if (strcmp (symbol
->section
->name
, ".opd") == 0
2482 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2484 bfd_vma dest
= opd_entry_value (symbol
->section
,
2485 symbol
->value
+ reloc_entry
->addend
,
2487 if (dest
!= (bfd_vma
) -1)
2488 reloc_entry
->addend
= dest
- (symbol
->value
2489 + symbol
->section
->output_section
->vma
2490 + symbol
->section
->output_offset
);
2492 return bfd_reloc_continue
;
2495 static bfd_reloc_status_type
2496 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2497 void *data
, asection
*input_section
,
2498 bfd
*output_bfd
, char **error_message
)
2501 enum elf_ppc64_reloc_type r_type
;
2502 bfd_size_type octets
;
2503 /* Assume 'at' branch hints. */
2504 bfd_boolean is_isa_v2
= TRUE
;
2506 /* If this is a relocatable link (output_bfd test tells us), just
2507 call the generic function. Any adjustment will be done at final
2509 if (output_bfd
!= NULL
)
2510 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2511 input_section
, output_bfd
, error_message
);
2513 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2514 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2515 insn
&= ~(0x01 << 21);
2516 r_type
= reloc_entry
->howto
->type
;
2517 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2518 || r_type
== R_PPC64_REL14_BRTAKEN
)
2519 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2523 /* Set 'a' bit. This is 0b00010 in BO field for branch
2524 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2525 for branch on CTR insns (BO == 1a00t or 1a01t). */
2526 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2528 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2538 if (!bfd_is_com_section (symbol
->section
))
2539 target
= symbol
->value
;
2540 target
+= symbol
->section
->output_section
->vma
;
2541 target
+= symbol
->section
->output_offset
;
2542 target
+= reloc_entry
->addend
;
2544 from
= (reloc_entry
->address
2545 + input_section
->output_offset
2546 + input_section
->output_section
->vma
);
2548 /* Invert 'y' bit if not the default. */
2549 if ((bfd_signed_vma
) (target
- from
) < 0)
2552 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2554 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2555 input_section
, output_bfd
, error_message
);
2558 static bfd_reloc_status_type
2559 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2560 void *data
, asection
*input_section
,
2561 bfd
*output_bfd
, char **error_message
)
2563 /* If this is a relocatable link (output_bfd test tells us), just
2564 call the generic function. Any adjustment will be done at final
2566 if (output_bfd
!= NULL
)
2567 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2568 input_section
, output_bfd
, error_message
);
2570 /* Subtract the symbol section base address. */
2571 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2572 return bfd_reloc_continue
;
2575 static bfd_reloc_status_type
2576 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2577 void *data
, asection
*input_section
,
2578 bfd
*output_bfd
, char **error_message
)
2580 /* If this is a relocatable link (output_bfd test tells us), just
2581 call the generic function. Any adjustment will be done at final
2583 if (output_bfd
!= NULL
)
2584 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2585 input_section
, output_bfd
, error_message
);
2587 /* Subtract the symbol section base address. */
2588 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2590 /* Adjust the addend for sign extension of the low 16 bits. */
2591 reloc_entry
->addend
+= 0x8000;
2592 return bfd_reloc_continue
;
2595 static bfd_reloc_status_type
2596 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2597 void *data
, asection
*input_section
,
2598 bfd
*output_bfd
, char **error_message
)
2602 /* If this is a relocatable link (output_bfd test tells us), just
2603 call the generic function. Any adjustment will be done at final
2605 if (output_bfd
!= NULL
)
2606 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2607 input_section
, output_bfd
, error_message
);
2609 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2611 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2613 /* Subtract the TOC base address. */
2614 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2615 return bfd_reloc_continue
;
2618 static bfd_reloc_status_type
2619 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2620 void *data
, asection
*input_section
,
2621 bfd
*output_bfd
, char **error_message
)
2625 /* If this is a relocatable link (output_bfd test tells us), just
2626 call the generic function. Any adjustment will be done at final
2628 if (output_bfd
!= NULL
)
2629 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2630 input_section
, output_bfd
, error_message
);
2632 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2634 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2636 /* Subtract the TOC base address. */
2637 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2639 /* Adjust the addend for sign extension of the low 16 bits. */
2640 reloc_entry
->addend
+= 0x8000;
2641 return bfd_reloc_continue
;
2644 static bfd_reloc_status_type
2645 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2646 void *data
, asection
*input_section
,
2647 bfd
*output_bfd
, char **error_message
)
2650 bfd_size_type octets
;
2652 /* If this is a relocatable link (output_bfd test tells us), just
2653 call the generic function. Any adjustment will be done at final
2655 if (output_bfd
!= NULL
)
2656 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2657 input_section
, output_bfd
, error_message
);
2659 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2661 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2663 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2664 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2665 return bfd_reloc_ok
;
2668 static bfd_reloc_status_type
2669 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2670 void *data
, asection
*input_section
,
2671 bfd
*output_bfd
, char **error_message
)
2673 /* If this is a relocatable link (output_bfd test tells us), just
2674 call the generic function. Any adjustment will be done at final
2676 if (output_bfd
!= NULL
)
2677 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2678 input_section
, output_bfd
, error_message
);
2680 if (error_message
!= NULL
)
2682 static char buf
[60];
2683 sprintf (buf
, "generic linker can't handle %s",
2684 reloc_entry
->howto
->name
);
2685 *error_message
= buf
;
2687 return bfd_reloc_dangerous
;
2690 /* Track GOT entries needed for a given symbol. We might need more
2691 than one got entry per symbol. */
2694 struct got_entry
*next
;
2696 /* The symbol addend that we'll be placing in the GOT. */
2699 /* Unlike other ELF targets, we use separate GOT entries for the same
2700 symbol referenced from different input files. This is to support
2701 automatic multiple TOC/GOT sections, where the TOC base can vary
2702 from one input file to another. After partitioning into TOC groups
2703 we merge entries within the group.
2705 Point to the BFD owning this GOT entry. */
2708 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2709 TLS_TPREL or TLS_DTPREL for tls entries. */
2710 unsigned char tls_type
;
2712 /* Non-zero if got.ent points to real entry. */
2713 unsigned char is_indirect
;
2715 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2718 bfd_signed_vma refcount
;
2720 struct got_entry
*ent
;
2724 /* The same for PLT. */
2727 struct plt_entry
*next
;
2733 bfd_signed_vma refcount
;
2738 struct ppc64_elf_obj_tdata
2740 struct elf_obj_tdata elf
;
2742 /* Shortcuts to dynamic linker sections. */
2746 /* Used during garbage collection. We attach global symbols defined
2747 on removed .opd entries to this section so that the sym is removed. */
2748 asection
*deleted_section
;
2750 /* TLS local dynamic got entry handling. Support for multiple GOT
2751 sections means we potentially need one of these for each input bfd. */
2752 struct got_entry tlsld_got
;
2755 /* A copy of relocs before they are modified for --emit-relocs. */
2756 Elf_Internal_Rela
*relocs
;
2758 /* Section contents. */
2762 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2763 the reloc to be in the range -32768 to 32767. */
2764 unsigned int has_small_toc_reloc
: 1;
2766 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2767 instruction not one we handle. */
2768 unsigned int unexpected_toc_insn
: 1;
2771 #define ppc64_elf_tdata(bfd) \
2772 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2774 #define ppc64_tlsld_got(bfd) \
2775 (&ppc64_elf_tdata (bfd)->tlsld_got)
2777 #define is_ppc64_elf(bfd) \
2778 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2779 && elf_object_id (bfd) == PPC64_ELF_DATA)
2781 /* Override the generic function because we store some extras. */
2784 ppc64_elf_mkobject (bfd
*abfd
)
2786 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2790 /* Fix bad default arch selected for a 64 bit input bfd when the
2791 default is 32 bit. */
2794 ppc64_elf_object_p (bfd
*abfd
)
2796 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2798 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2800 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2802 /* Relies on arch after 32 bit default being 64 bit default. */
2803 abfd
->arch_info
= abfd
->arch_info
->next
;
2804 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2810 /* Support for core dump NOTE sections. */
2813 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2815 size_t offset
, size
;
2817 if (note
->descsz
!= 504)
2821 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2824 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2830 /* Make a ".reg/999" section. */
2831 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2832 size
, note
->descpos
+ offset
);
2836 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2838 if (note
->descsz
!= 136)
2841 elf_tdata (abfd
)->core
->pid
2842 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2843 elf_tdata (abfd
)->core
->program
2844 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2845 elf_tdata (abfd
)->core
->command
2846 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2852 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2865 va_start (ap
, note_type
);
2866 memset (data
, 0, sizeof (data
));
2867 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2868 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2870 return elfcore_write_note (abfd
, buf
, bufsiz
,
2871 "CORE", note_type
, data
, sizeof (data
));
2882 va_start (ap
, note_type
);
2883 memset (data
, 0, 112);
2884 pid
= va_arg (ap
, long);
2885 bfd_put_32 (abfd
, pid
, data
+ 32);
2886 cursig
= va_arg (ap
, int);
2887 bfd_put_16 (abfd
, cursig
, data
+ 12);
2888 greg
= va_arg (ap
, const void *);
2889 memcpy (data
+ 112, greg
, 384);
2890 memset (data
+ 496, 0, 8);
2892 return elfcore_write_note (abfd
, buf
, bufsiz
,
2893 "CORE", note_type
, data
, sizeof (data
));
2898 /* Add extra PPC sections. */
2900 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2902 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2903 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2904 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2905 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2906 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2907 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2908 { NULL
, 0, 0, 0, 0 }
2911 enum _ppc64_sec_type
{
2917 struct _ppc64_elf_section_data
2919 struct bfd_elf_section_data elf
;
2923 /* An array with one entry for each opd function descriptor. */
2924 struct _opd_sec_data
2926 /* Points to the function code section for local opd entries. */
2927 asection
**func_sec
;
2929 /* After editing .opd, adjust references to opd local syms. */
2933 /* An array for toc sections, indexed by offset/8. */
2934 struct _toc_sec_data
2936 /* Specifies the relocation symbol index used at a given toc offset. */
2939 /* And the relocation addend. */
2944 enum _ppc64_sec_type sec_type
:2;
2946 /* Flag set when small branches are detected. Used to
2947 select suitable defaults for the stub group size. */
2948 unsigned int has_14bit_branch
:1;
2951 #define ppc64_elf_section_data(sec) \
2952 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2955 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2957 if (!sec
->used_by_bfd
)
2959 struct _ppc64_elf_section_data
*sdata
;
2960 bfd_size_type amt
= sizeof (*sdata
);
2962 sdata
= bfd_zalloc (abfd
, amt
);
2965 sec
->used_by_bfd
= sdata
;
2968 return _bfd_elf_new_section_hook (abfd
, sec
);
2971 static struct _opd_sec_data
*
2972 get_opd_info (asection
* sec
)
2975 && ppc64_elf_section_data (sec
) != NULL
2976 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2977 return &ppc64_elf_section_data (sec
)->u
.opd
;
2982 abiversion (bfd
*abfd
)
2984 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
2988 set_abiversion (bfd
*abfd
, int ver
)
2990 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
2991 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
2994 /* Parameters for the qsort hook. */
2995 static bfd_boolean synthetic_relocatable
;
2997 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3000 compare_symbols (const void *ap
, const void *bp
)
3002 const asymbol
*a
= * (const asymbol
**) ap
;
3003 const asymbol
*b
= * (const asymbol
**) bp
;
3005 /* Section symbols first. */
3006 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3008 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3011 /* then .opd symbols. */
3012 if (strcmp (a
->section
->name
, ".opd") == 0
3013 && strcmp (b
->section
->name
, ".opd") != 0)
3015 if (strcmp (a
->section
->name
, ".opd") != 0
3016 && strcmp (b
->section
->name
, ".opd") == 0)
3019 /* then other code symbols. */
3020 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3021 == (SEC_CODE
| SEC_ALLOC
)
3022 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3023 != (SEC_CODE
| SEC_ALLOC
))
3026 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3027 != (SEC_CODE
| SEC_ALLOC
)
3028 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3029 == (SEC_CODE
| SEC_ALLOC
))
3032 if (synthetic_relocatable
)
3034 if (a
->section
->id
< b
->section
->id
)
3037 if (a
->section
->id
> b
->section
->id
)
3041 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3044 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3047 /* For syms with the same value, prefer strong dynamic global function
3048 syms over other syms. */
3049 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3052 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3055 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3058 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3061 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3064 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3067 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3070 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3076 /* Search SYMS for a symbol of the given VALUE. */
3079 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
3087 mid
= (lo
+ hi
) >> 1;
3088 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3090 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3100 mid
= (lo
+ hi
) >> 1;
3101 if (syms
[mid
]->section
->id
< id
)
3103 else if (syms
[mid
]->section
->id
> id
)
3105 else if (syms
[mid
]->value
< value
)
3107 else if (syms
[mid
]->value
> value
)
3117 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3119 bfd_vma vma
= *(bfd_vma
*) ptr
;
3120 return ((section
->flags
& SEC_ALLOC
) != 0
3121 && section
->vma
<= vma
3122 && vma
< section
->vma
+ section
->size
);
3125 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3126 entry syms. Also generate @plt symbols for the glink branch table. */
3129 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3130 long static_count
, asymbol
**static_syms
,
3131 long dyn_count
, asymbol
**dyn_syms
,
3138 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3139 asection
*opd
= NULL
;
3140 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3142 int abi
= abiversion (abfd
);
3148 opd
= bfd_get_section_by_name (abfd
, ".opd");
3149 if (opd
== NULL
&& abi
== 1)
3153 symcount
= static_count
;
3155 symcount
+= dyn_count
;
3159 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3163 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3165 /* Use both symbol tables. */
3166 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3167 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3169 else if (!relocatable
&& static_count
== 0)
3170 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3172 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3174 synthetic_relocatable
= relocatable
;
3175 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3177 if (!relocatable
&& symcount
> 1)
3180 /* Trim duplicate syms, since we may have merged the normal and
3181 dynamic symbols. Actually, we only care about syms that have
3182 different values, so trim any with the same value. */
3183 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3184 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3185 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3186 syms
[j
++] = syms
[i
];
3191 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3195 for (; i
< symcount
; ++i
)
3196 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3197 != (SEC_CODE
| SEC_ALLOC
))
3198 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3202 for (; i
< symcount
; ++i
)
3203 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3207 for (; i
< symcount
; ++i
)
3208 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3212 for (; i
< symcount
; ++i
)
3213 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3214 != (SEC_CODE
| SEC_ALLOC
))
3222 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3227 if (opdsymend
== secsymend
)
3230 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3231 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3235 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3242 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3246 while (r
< opd
->relocation
+ relcount
3247 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3250 if (r
== opd
->relocation
+ relcount
)
3253 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3256 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3259 sym
= *r
->sym_ptr_ptr
;
3260 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3261 sym
->section
->id
, sym
->value
+ r
->addend
))
3264 size
+= sizeof (asymbol
);
3265 size
+= strlen (syms
[i
]->name
) + 2;
3269 s
= *ret
= bfd_malloc (size
);
3276 names
= (char *) (s
+ count
);
3278 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3282 while (r
< opd
->relocation
+ relcount
3283 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3286 if (r
== opd
->relocation
+ relcount
)
3289 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3292 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3295 sym
= *r
->sym_ptr_ptr
;
3296 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3297 sym
->section
->id
, sym
->value
+ r
->addend
))
3302 s
->flags
|= BSF_SYNTHETIC
;
3303 s
->section
= sym
->section
;
3304 s
->value
= sym
->value
+ r
->addend
;
3307 len
= strlen (syms
[i
]->name
);
3308 memcpy (names
, syms
[i
]->name
, len
+ 1);
3310 /* Have udata.p point back to the original symbol this
3311 synthetic symbol was derived from. */
3312 s
->udata
.p
= syms
[i
];
3319 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3320 bfd_byte
*contents
= NULL
;
3323 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3324 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3327 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3329 free_contents_and_exit
:
3337 for (i
= secsymend
; i
< opdsymend
; ++i
)
3341 /* Ignore bogus symbols. */
3342 if (syms
[i
]->value
> opd
->size
- 8)
3345 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3346 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3349 size
+= sizeof (asymbol
);
3350 size
+= strlen (syms
[i
]->name
) + 2;
3354 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3356 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3358 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3360 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3362 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3363 goto free_contents_and_exit
;
3365 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3366 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3369 extdynend
= extdyn
+ dynamic
->size
;
3370 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3372 Elf_Internal_Dyn dyn
;
3373 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3375 if (dyn
.d_tag
== DT_NULL
)
3378 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3380 /* The first glink stub starts at offset 32; see
3381 comment in ppc64_elf_finish_dynamic_sections. */
3382 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3383 /* The .glink section usually does not survive the final
3384 link; search for the section (usually .text) where the
3385 glink stubs now reside. */
3386 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3397 /* Determine __glink trampoline by reading the relative branch
3398 from the first glink stub. */
3400 unsigned int off
= 0;
3402 while (bfd_get_section_contents (abfd
, glink
, buf
,
3403 glink_vma
+ off
- glink
->vma
, 4))
3405 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3407 if ((insn
& ~0x3fffffc) == 0)
3409 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3418 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3420 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3423 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3424 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3425 goto free_contents_and_exit
;
3427 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3428 size
+= plt_count
* sizeof (asymbol
);
3430 p
= relplt
->relocation
;
3431 for (i
= 0; i
< plt_count
; i
++, p
++)
3433 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3435 size
+= sizeof ("+0x") - 1 + 16;
3440 s
= *ret
= bfd_malloc (size
);
3442 goto free_contents_and_exit
;
3444 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3446 for (i
= secsymend
; i
< opdsymend
; ++i
)
3450 if (syms
[i
]->value
> opd
->size
- 8)
3453 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3454 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3458 asection
*sec
= abfd
->sections
;
3465 long mid
= (lo
+ hi
) >> 1;
3466 if (syms
[mid
]->section
->vma
< ent
)
3468 else if (syms
[mid
]->section
->vma
> ent
)
3472 sec
= syms
[mid
]->section
;
3477 if (lo
>= hi
&& lo
> codesecsym
)
3478 sec
= syms
[lo
- 1]->section
;
3480 for (; sec
!= NULL
; sec
= sec
->next
)
3484 /* SEC_LOAD may not be set if SEC is from a separate debug
3486 if ((sec
->flags
& SEC_ALLOC
) == 0)
3488 if ((sec
->flags
& SEC_CODE
) != 0)
3491 s
->flags
|= BSF_SYNTHETIC
;
3492 s
->value
= ent
- s
->section
->vma
;
3495 len
= strlen (syms
[i
]->name
);
3496 memcpy (names
, syms
[i
]->name
, len
+ 1);
3498 /* Have udata.p point back to the original symbol this
3499 synthetic symbol was derived from. */
3500 s
->udata
.p
= syms
[i
];
3506 if (glink
!= NULL
&& relplt
!= NULL
)
3510 /* Add a symbol for the main glink trampoline. */
3511 memset (s
, 0, sizeof *s
);
3513 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3515 s
->value
= resolv_vma
- glink
->vma
;
3517 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3518 names
+= sizeof ("__glink_PLTresolve");
3523 /* FIXME: It would be very much nicer to put sym@plt on the
3524 stub rather than on the glink branch table entry. The
3525 objdump disassembler would then use a sensible symbol
3526 name on plt calls. The difficulty in doing so is
3527 a) finding the stubs, and,
3528 b) matching stubs against plt entries, and,
3529 c) there can be multiple stubs for a given plt entry.
3531 Solving (a) could be done by code scanning, but older
3532 ppc64 binaries used different stubs to current code.
3533 (b) is the tricky one since you need to known the toc
3534 pointer for at least one function that uses a pic stub to
3535 be able to calculate the plt address referenced.
3536 (c) means gdb would need to set multiple breakpoints (or
3537 find the glink branch itself) when setting breakpoints
3538 for pending shared library loads. */
3539 p
= relplt
->relocation
;
3540 for (i
= 0; i
< plt_count
; i
++, p
++)
3544 *s
= **p
->sym_ptr_ptr
;
3545 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3546 we are defining a symbol, ensure one of them is set. */
3547 if ((s
->flags
& BSF_LOCAL
) == 0)
3548 s
->flags
|= BSF_GLOBAL
;
3549 s
->flags
|= BSF_SYNTHETIC
;
3551 s
->value
= glink_vma
- glink
->vma
;
3554 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3555 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3559 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3560 names
+= sizeof ("+0x") - 1;
3561 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3562 names
+= strlen (names
);
3564 memcpy (names
, "@plt", sizeof ("@plt"));
3565 names
+= sizeof ("@plt");
3585 /* The following functions are specific to the ELF linker, while
3586 functions above are used generally. Those named ppc64_elf_* are
3587 called by the main ELF linker code. They appear in this file more
3588 or less in the order in which they are called. eg.
3589 ppc64_elf_check_relocs is called early in the link process,
3590 ppc64_elf_finish_dynamic_sections is one of the last functions
3593 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3594 functions have both a function code symbol and a function descriptor
3595 symbol. A call to foo in a relocatable object file looks like:
3602 The function definition in another object file might be:
3606 . .quad .TOC.@tocbase
3612 When the linker resolves the call during a static link, the branch
3613 unsurprisingly just goes to .foo and the .opd information is unused.
3614 If the function definition is in a shared library, things are a little
3615 different: The call goes via a plt call stub, the opd information gets
3616 copied to the plt, and the linker patches the nop.
3624 . std 2,40(1) # in practice, the call stub
3625 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3626 . addi 11,11,Lfoo@toc@l # this is the general idea
3634 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3636 The "reloc ()" notation is supposed to indicate that the linker emits
3637 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3640 What are the difficulties here? Well, firstly, the relocations
3641 examined by the linker in check_relocs are against the function code
3642 sym .foo, while the dynamic relocation in the plt is emitted against
3643 the function descriptor symbol, foo. Somewhere along the line, we need
3644 to carefully copy dynamic link information from one symbol to the other.
3645 Secondly, the generic part of the elf linker will make .foo a dynamic
3646 symbol as is normal for most other backends. We need foo dynamic
3647 instead, at least for an application final link. However, when
3648 creating a shared library containing foo, we need to have both symbols
3649 dynamic so that references to .foo are satisfied during the early
3650 stages of linking. Otherwise the linker might decide to pull in a
3651 definition from some other object, eg. a static library.
3653 Update: As of August 2004, we support a new convention. Function
3654 calls may use the function descriptor symbol, ie. "bl foo". This
3655 behaves exactly as "bl .foo". */
3657 /* Of those relocs that might be copied as dynamic relocs, this function
3658 selects those that must be copied when linking a shared library,
3659 even when the symbol is local. */
3662 must_be_dyn_reloc (struct bfd_link_info
*info
,
3663 enum elf_ppc64_reloc_type r_type
)
3675 case R_PPC64_TPREL16
:
3676 case R_PPC64_TPREL16_LO
:
3677 case R_PPC64_TPREL16_HI
:
3678 case R_PPC64_TPREL16_HA
:
3679 case R_PPC64_TPREL16_DS
:
3680 case R_PPC64_TPREL16_LO_DS
:
3681 case R_PPC64_TPREL16_HIGH
:
3682 case R_PPC64_TPREL16_HIGHA
:
3683 case R_PPC64_TPREL16_HIGHER
:
3684 case R_PPC64_TPREL16_HIGHERA
:
3685 case R_PPC64_TPREL16_HIGHEST
:
3686 case R_PPC64_TPREL16_HIGHESTA
:
3687 case R_PPC64_TPREL64
:
3688 return !info
->executable
;
3692 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3693 copying dynamic variables from a shared lib into an app's dynbss
3694 section, and instead use a dynamic relocation to point into the
3695 shared lib. With code that gcc generates, it's vital that this be
3696 enabled; In the PowerPC64 ABI, the address of a function is actually
3697 the address of a function descriptor, which resides in the .opd
3698 section. gcc uses the descriptor directly rather than going via the
3699 GOT as some other ABI's do, which means that initialized function
3700 pointers must reference the descriptor. Thus, a function pointer
3701 initialized to the address of a function in a shared library will
3702 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3703 redefines the function descriptor symbol to point to the copy. This
3704 presents a problem as a plt entry for that function is also
3705 initialized from the function descriptor symbol and the copy reloc
3706 may not be initialized first. */
3707 #define ELIMINATE_COPY_RELOCS 1
3709 /* Section name for stubs is the associated section name plus this
3711 #define STUB_SUFFIX ".stub"
3714 ppc_stub_long_branch:
3715 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3716 destination, but a 24 bit branch in a stub section will reach.
3719 ppc_stub_plt_branch:
3720 Similar to the above, but a 24 bit branch in the stub section won't
3721 reach its destination.
3722 . addis %r11,%r2,xxx@toc@ha
3723 . ld %r12,xxx@toc@l(%r11)
3728 Used to call a function in a shared library. If it so happens that
3729 the plt entry referenced crosses a 64k boundary, then an extra
3730 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3732 . addis %r11,%r2,xxx@toc@ha
3733 . ld %r12,xxx+0@toc@l(%r11)
3735 . ld %r2,xxx+8@toc@l(%r11)
3736 . ld %r11,xxx+16@toc@l(%r11)
3739 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3740 code to adjust the value and save r2 to support multiple toc sections.
3741 A ppc_stub_long_branch with an r2 offset looks like:
3743 . addis %r2,%r2,off@ha
3744 . addi %r2,%r2,off@l
3747 A ppc_stub_plt_branch with an r2 offset looks like:
3749 . addis %r11,%r2,xxx@toc@ha
3750 . ld %r12,xxx@toc@l(%r11)
3751 . addis %r2,%r2,off@ha
3752 . addi %r2,%r2,off@l
3756 In cases where the "addis" instruction would add zero, the "addis" is
3757 omitted and following instructions modified slightly in some cases.
3760 enum ppc_stub_type
{
3762 ppc_stub_long_branch
,
3763 ppc_stub_long_branch_r2off
,
3764 ppc_stub_plt_branch
,
3765 ppc_stub_plt_branch_r2off
,
3767 ppc_stub_plt_call_r2save
3770 struct ppc_stub_hash_entry
{
3772 /* Base hash table entry structure. */
3773 struct bfd_hash_entry root
;
3775 enum ppc_stub_type stub_type
;
3777 /* The stub section. */
3780 /* Offset within stub_sec of the beginning of this stub. */
3781 bfd_vma stub_offset
;
3783 /* Given the symbol's value and its section we can determine its final
3784 value when building the stubs (so the stub knows where to jump. */
3785 bfd_vma target_value
;
3786 asection
*target_section
;
3788 /* The symbol table entry, if any, that this was derived from. */
3789 struct ppc_link_hash_entry
*h
;
3790 struct plt_entry
*plt_ent
;
3792 /* Where this stub is being called from, or, in the case of combined
3793 stub sections, the first input section in the group. */
3796 /* Symbol st_other. */
3797 unsigned char other
;
3800 struct ppc_branch_hash_entry
{
3802 /* Base hash table entry structure. */
3803 struct bfd_hash_entry root
;
3805 /* Offset within branch lookup table. */
3806 unsigned int offset
;
3808 /* Generation marker. */
3812 /* Used to track dynamic relocations for local symbols. */
3813 struct ppc_dyn_relocs
3815 struct ppc_dyn_relocs
*next
;
3817 /* The input section of the reloc. */
3820 /* Total number of relocs copied for the input section. */
3821 unsigned int count
: 31;
3823 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3824 unsigned int ifunc
: 1;
3827 struct ppc_link_hash_entry
3829 struct elf_link_hash_entry elf
;
3832 /* A pointer to the most recently used stub hash entry against this
3834 struct ppc_stub_hash_entry
*stub_cache
;
3836 /* A pointer to the next symbol starting with a '.' */
3837 struct ppc_link_hash_entry
*next_dot_sym
;
3840 /* Track dynamic relocs copied for this symbol. */
3841 struct elf_dyn_relocs
*dyn_relocs
;
3843 /* Link between function code and descriptor symbols. */
3844 struct ppc_link_hash_entry
*oh
;
3846 /* Flag function code and descriptor symbols. */
3847 unsigned int is_func
:1;
3848 unsigned int is_func_descriptor
:1;
3849 unsigned int fake
:1;
3851 /* Whether global opd/toc sym has been adjusted or not.
3852 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3853 should be set for all globals defined in any opd/toc section. */
3854 unsigned int adjust_done
:1;
3856 /* Set if we twiddled this symbol to weak at some stage. */
3857 unsigned int was_undefined
:1;
3859 /* Contexts in which symbol is used in the GOT (or TOC).
3860 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3861 corresponding relocs are encountered during check_relocs.
3862 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3863 indicate the corresponding GOT entry type is not needed.
3864 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3865 a TPREL one. We use a separate flag rather than setting TPREL
3866 just for convenience in distinguishing the two cases. */
3867 #define TLS_GD 1 /* GD reloc. */
3868 #define TLS_LD 2 /* LD reloc. */
3869 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3870 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3871 #define TLS_TLS 16 /* Any TLS reloc. */
3872 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3873 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3874 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3875 unsigned char tls_mask
;
3878 /* ppc64 ELF linker hash table. */
3880 struct ppc_link_hash_table
3882 struct elf_link_hash_table elf
;
3884 /* The stub hash table. */
3885 struct bfd_hash_table stub_hash_table
;
3887 /* Another hash table for plt_branch stubs. */
3888 struct bfd_hash_table branch_hash_table
;
3890 /* Hash table for function prologue tocsave. */
3891 htab_t tocsave_htab
;
3893 /* Various options and other info passed from the linker. */
3894 struct ppc64_elf_params
*params
;
3896 /* Array to keep track of which stub sections have been created, and
3897 information on stub grouping. */
3899 /* This is the section to which stubs in the group will be attached. */
3901 /* The stub section. */
3903 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3907 /* Temp used when calculating TOC pointers. */
3910 asection
*toc_first_sec
;
3912 /* Highest input section id. */
3915 /* Highest output section index. */
3918 /* Used when adding symbols. */
3919 struct ppc_link_hash_entry
*dot_syms
;
3921 /* List of input sections for each output section. */
3922 asection
**input_list
;
3924 /* Shortcuts to get to dynamic linker sections. */
3931 asection
*glink_eh_frame
;
3933 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3934 struct ppc_link_hash_entry
*tls_get_addr
;
3935 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3937 /* The size of reliplt used by got entry relocs. */
3938 bfd_size_type got_reli_size
;
3941 unsigned long stub_count
[ppc_stub_plt_call_r2save
];
3943 /* Number of stubs against global syms. */
3944 unsigned long stub_globals
;
3946 /* Set if we're linking code with function descriptors. */
3947 unsigned int opd_abi
:1;
3949 /* Support for multiple toc sections. */
3950 unsigned int do_multi_toc
:1;
3951 unsigned int multi_toc_needed
:1;
3952 unsigned int second_toc_pass
:1;
3953 unsigned int do_toc_opt
:1;
3956 unsigned int stub_error
:1;
3958 /* Temp used by ppc64_elf_process_dot_syms. */
3959 unsigned int twiddled_syms
:1;
3961 /* Incremented every time we size stubs. */
3962 unsigned int stub_iteration
;
3964 /* Small local sym cache. */
3965 struct sym_cache sym_cache
;
3968 /* Rename some of the generic section flags to better document how they
3971 /* Nonzero if this section has TLS related relocations. */
3972 #define has_tls_reloc sec_flg0
3974 /* Nonzero if this section has a call to __tls_get_addr. */
3975 #define has_tls_get_addr_call sec_flg1
3977 /* Nonzero if this section has any toc or got relocs. */
3978 #define has_toc_reloc sec_flg2
3980 /* Nonzero if this section has a call to another section that uses
3982 #define makes_toc_func_call sec_flg3
3984 /* Recursion protection when determining above flag. */
3985 #define call_check_in_progress sec_flg4
3986 #define call_check_done sec_flg5
3988 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3990 #define ppc_hash_table(p) \
3991 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3992 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3994 #define ppc_stub_hash_lookup(table, string, create, copy) \
3995 ((struct ppc_stub_hash_entry *) \
3996 bfd_hash_lookup ((table), (string), (create), (copy)))
3998 #define ppc_branch_hash_lookup(table, string, create, copy) \
3999 ((struct ppc_branch_hash_entry *) \
4000 bfd_hash_lookup ((table), (string), (create), (copy)))
4002 /* Create an entry in the stub hash table. */
4004 static struct bfd_hash_entry
*
4005 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4006 struct bfd_hash_table
*table
,
4009 /* Allocate the structure if it has not already been allocated by a
4013 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4018 /* Call the allocation method of the superclass. */
4019 entry
= bfd_hash_newfunc (entry
, table
, string
);
4022 struct ppc_stub_hash_entry
*eh
;
4024 /* Initialize the local fields. */
4025 eh
= (struct ppc_stub_hash_entry
*) entry
;
4026 eh
->stub_type
= ppc_stub_none
;
4027 eh
->stub_sec
= NULL
;
4028 eh
->stub_offset
= 0;
4029 eh
->target_value
= 0;
4030 eh
->target_section
= NULL
;
4040 /* Create an entry in the branch hash table. */
4042 static struct bfd_hash_entry
*
4043 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4044 struct bfd_hash_table
*table
,
4047 /* Allocate the structure if it has not already been allocated by a
4051 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4056 /* Call the allocation method of the superclass. */
4057 entry
= bfd_hash_newfunc (entry
, table
, string
);
4060 struct ppc_branch_hash_entry
*eh
;
4062 /* Initialize the local fields. */
4063 eh
= (struct ppc_branch_hash_entry
*) entry
;
4071 /* Create an entry in a ppc64 ELF linker hash table. */
4073 static struct bfd_hash_entry
*
4074 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4075 struct bfd_hash_table
*table
,
4078 /* Allocate the structure if it has not already been allocated by a
4082 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4087 /* Call the allocation method of the superclass. */
4088 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4091 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4093 memset (&eh
->u
.stub_cache
, 0,
4094 (sizeof (struct ppc_link_hash_entry
)
4095 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4097 /* When making function calls, old ABI code references function entry
4098 points (dot symbols), while new ABI code references the function
4099 descriptor symbol. We need to make any combination of reference and
4100 definition work together, without breaking archive linking.
4102 For a defined function "foo" and an undefined call to "bar":
4103 An old object defines "foo" and ".foo", references ".bar" (possibly
4105 A new object defines "foo" and references "bar".
4107 A new object thus has no problem with its undefined symbols being
4108 satisfied by definitions in an old object. On the other hand, the
4109 old object won't have ".bar" satisfied by a new object.
4111 Keep a list of newly added dot-symbols. */
4113 if (string
[0] == '.')
4115 struct ppc_link_hash_table
*htab
;
4117 htab
= (struct ppc_link_hash_table
*) table
;
4118 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4119 htab
->dot_syms
= eh
;
4126 struct tocsave_entry
{
4132 tocsave_htab_hash (const void *p
)
4134 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4135 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
4139 tocsave_htab_eq (const void *p1
, const void *p2
)
4141 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4142 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4143 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4146 /* Create a ppc64 ELF linker hash table. */
4148 static struct bfd_link_hash_table
*
4149 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4151 struct ppc_link_hash_table
*htab
;
4152 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4154 htab
= bfd_zmalloc (amt
);
4158 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4159 sizeof (struct ppc_link_hash_entry
),
4166 /* Init the stub hash table too. */
4167 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4168 sizeof (struct ppc_stub_hash_entry
)))
4170 _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table
*) htab
);
4174 /* And the branch hash table. */
4175 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4176 sizeof (struct ppc_branch_hash_entry
)))
4178 bfd_hash_table_free (&htab
->stub_hash_table
);
4179 _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table
*) htab
);
4183 htab
->tocsave_htab
= htab_try_create (1024,
4187 if (htab
->tocsave_htab
== NULL
)
4189 bfd_hash_table_free (&htab
->branch_hash_table
);
4190 bfd_hash_table_free (&htab
->stub_hash_table
);
4191 _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table
*) htab
);
4195 /* Initializing two fields of the union is just cosmetic. We really
4196 only care about glist, but when compiled on a 32-bit host the
4197 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4198 debugger inspection of these fields look nicer. */
4199 htab
->elf
.init_got_refcount
.refcount
= 0;
4200 htab
->elf
.init_got_refcount
.glist
= NULL
;
4201 htab
->elf
.init_plt_refcount
.refcount
= 0;
4202 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4203 htab
->elf
.init_got_offset
.offset
= 0;
4204 htab
->elf
.init_got_offset
.glist
= NULL
;
4205 htab
->elf
.init_plt_offset
.offset
= 0;
4206 htab
->elf
.init_plt_offset
.glist
= NULL
;
4208 return &htab
->elf
.root
;
4211 /* Free the derived linker hash table. */
4214 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4216 struct ppc_link_hash_table
*htab
= (struct ppc_link_hash_table
*) hash
;
4218 bfd_hash_table_free (&htab
->stub_hash_table
);
4219 bfd_hash_table_free (&htab
->branch_hash_table
);
4220 if (htab
->tocsave_htab
)
4221 htab_delete (htab
->tocsave_htab
);
4222 _bfd_elf_link_hash_table_free (hash
);
4225 /* Create sections for linker generated code. */
4228 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4230 struct ppc_link_hash_table
*htab
;
4233 htab
= ppc_hash_table (info
);
4235 /* Create .sfpr for code to save and restore fp regs. */
4236 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4237 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4238 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4240 if (htab
->sfpr
== NULL
4241 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4244 /* Create .glink for lazy dynamic linking support. */
4245 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4247 if (htab
->glink
== NULL
4248 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4251 if (!info
->no_ld_generated_unwind_info
)
4253 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4254 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4255 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4258 if (htab
->glink_eh_frame
== NULL
4259 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4263 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4264 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4265 if (htab
->elf
.iplt
== NULL
4266 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4269 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4270 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4272 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4273 if (htab
->elf
.irelplt
== NULL
4274 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4277 /* Create branch lookup table for plt_branch stubs. */
4278 flags
= (SEC_ALLOC
| SEC_LOAD
4279 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4280 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4282 if (htab
->brlt
== NULL
4283 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4289 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4290 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4291 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4294 if (htab
->relbrlt
== NULL
4295 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4301 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4304 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4305 struct ppc64_elf_params
*params
)
4307 struct ppc_link_hash_table
*htab
;
4309 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4311 /* Always hook our dynamic sections into the first bfd, which is the
4312 linker created stub bfd. This ensures that the GOT header is at
4313 the start of the output TOC section. */
4314 htab
= ppc_hash_table (info
);
4317 htab
->elf
.dynobj
= params
->stub_bfd
;
4318 htab
->params
= params
;
4320 if (info
->relocatable
)
4323 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4326 /* Build a name for an entry in the stub hash table. */
4329 ppc_stub_name (const asection
*input_section
,
4330 const asection
*sym_sec
,
4331 const struct ppc_link_hash_entry
*h
,
4332 const Elf_Internal_Rela
*rel
)
4337 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4338 offsets from a sym as a branch target? In fact, we could
4339 probably assume the addend is always zero. */
4340 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4344 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4345 stub_name
= bfd_malloc (len
);
4346 if (stub_name
== NULL
)
4349 len
= sprintf (stub_name
, "%08x.%s+%x",
4350 input_section
->id
& 0xffffffff,
4351 h
->elf
.root
.root
.string
,
4352 (int) rel
->r_addend
& 0xffffffff);
4356 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4357 stub_name
= bfd_malloc (len
);
4358 if (stub_name
== NULL
)
4361 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4362 input_section
->id
& 0xffffffff,
4363 sym_sec
->id
& 0xffffffff,
4364 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4365 (int) rel
->r_addend
& 0xffffffff);
4367 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4368 stub_name
[len
- 2] = 0;
4372 /* Look up an entry in the stub hash. Stub entries are cached because
4373 creating the stub name takes a bit of time. */
4375 static struct ppc_stub_hash_entry
*
4376 ppc_get_stub_entry (const asection
*input_section
,
4377 const asection
*sym_sec
,
4378 struct ppc_link_hash_entry
*h
,
4379 const Elf_Internal_Rela
*rel
,
4380 struct ppc_link_hash_table
*htab
)
4382 struct ppc_stub_hash_entry
*stub_entry
;
4383 const asection
*id_sec
;
4385 /* If this input section is part of a group of sections sharing one
4386 stub section, then use the id of the first section in the group.
4387 Stub names need to include a section id, as there may well be
4388 more than one stub used to reach say, printf, and we need to
4389 distinguish between them. */
4390 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4392 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4393 && h
->u
.stub_cache
->h
== h
4394 && h
->u
.stub_cache
->id_sec
== id_sec
)
4396 stub_entry
= h
->u
.stub_cache
;
4402 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4403 if (stub_name
== NULL
)
4406 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4407 stub_name
, FALSE
, FALSE
);
4409 h
->u
.stub_cache
= stub_entry
;
4417 /* Add a new stub entry to the stub hash. Not all fields of the new
4418 stub entry are initialised. */
4420 static struct ppc_stub_hash_entry
*
4421 ppc_add_stub (const char *stub_name
,
4423 struct bfd_link_info
*info
)
4425 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4428 struct ppc_stub_hash_entry
*stub_entry
;
4430 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4431 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4432 if (stub_sec
== NULL
)
4434 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4435 if (stub_sec
== NULL
)
4441 namelen
= strlen (link_sec
->name
);
4442 len
= namelen
+ sizeof (STUB_SUFFIX
);
4443 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4447 memcpy (s_name
, link_sec
->name
, namelen
);
4448 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4449 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4450 if (stub_sec
== NULL
)
4452 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4454 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4457 /* Enter this entry into the linker stub hash table. */
4458 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4460 if (stub_entry
== NULL
)
4462 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4463 section
->owner
, stub_name
);
4467 stub_entry
->stub_sec
= stub_sec
;
4468 stub_entry
->stub_offset
= 0;
4469 stub_entry
->id_sec
= link_sec
;
4473 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4474 not already done. */
4477 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4479 asection
*got
, *relgot
;
4481 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4483 if (!is_ppc64_elf (abfd
))
4489 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4492 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4493 | SEC_LINKER_CREATED
);
4495 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4497 || !bfd_set_section_alignment (abfd
, got
, 3))
4500 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4501 flags
| SEC_READONLY
);
4503 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4506 ppc64_elf_tdata (abfd
)->got
= got
;
4507 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4511 /* Create the dynamic sections, and set up shortcuts. */
4514 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4516 struct ppc_link_hash_table
*htab
;
4518 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4521 htab
= ppc_hash_table (info
);
4525 htab
->dynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
4527 htab
->relbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
4529 if (!htab
->elf
.sgot
|| !htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->dynbss
4530 || (!info
->shared
&& !htab
->relbss
))
4536 /* Follow indirect and warning symbol links. */
4538 static inline struct bfd_link_hash_entry
*
4539 follow_link (struct bfd_link_hash_entry
*h
)
4541 while (h
->type
== bfd_link_hash_indirect
4542 || h
->type
== bfd_link_hash_warning
)
4547 static inline struct elf_link_hash_entry
*
4548 elf_follow_link (struct elf_link_hash_entry
*h
)
4550 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4553 static inline struct ppc_link_hash_entry
*
4554 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4556 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4559 /* Merge PLT info on FROM with that on TO. */
4562 move_plt_plist (struct ppc_link_hash_entry
*from
,
4563 struct ppc_link_hash_entry
*to
)
4565 if (from
->elf
.plt
.plist
!= NULL
)
4567 if (to
->elf
.plt
.plist
!= NULL
)
4569 struct plt_entry
**entp
;
4570 struct plt_entry
*ent
;
4572 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4574 struct plt_entry
*dent
;
4576 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4577 if (dent
->addend
== ent
->addend
)
4579 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4586 *entp
= to
->elf
.plt
.plist
;
4589 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4590 from
->elf
.plt
.plist
= NULL
;
4594 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4597 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4598 struct elf_link_hash_entry
*dir
,
4599 struct elf_link_hash_entry
*ind
)
4601 struct ppc_link_hash_entry
*edir
, *eind
;
4603 edir
= (struct ppc_link_hash_entry
*) dir
;
4604 eind
= (struct ppc_link_hash_entry
*) ind
;
4606 edir
->is_func
|= eind
->is_func
;
4607 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4608 edir
->tls_mask
|= eind
->tls_mask
;
4609 if (eind
->oh
!= NULL
)
4610 edir
->oh
= ppc_follow_link (eind
->oh
);
4612 /* If called to transfer flags for a weakdef during processing
4613 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4614 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4615 if (!(ELIMINATE_COPY_RELOCS
4616 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4617 && edir
->elf
.dynamic_adjusted
))
4618 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4620 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4621 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4622 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4623 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4624 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4626 /* Copy over any dynamic relocs we may have on the indirect sym. */
4627 if (eind
->dyn_relocs
!= NULL
)
4629 if (edir
->dyn_relocs
!= NULL
)
4631 struct elf_dyn_relocs
**pp
;
4632 struct elf_dyn_relocs
*p
;
4634 /* Add reloc counts against the indirect sym to the direct sym
4635 list. Merge any entries against the same section. */
4636 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4638 struct elf_dyn_relocs
*q
;
4640 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4641 if (q
->sec
== p
->sec
)
4643 q
->pc_count
+= p
->pc_count
;
4644 q
->count
+= p
->count
;
4651 *pp
= edir
->dyn_relocs
;
4654 edir
->dyn_relocs
= eind
->dyn_relocs
;
4655 eind
->dyn_relocs
= NULL
;
4658 /* If we were called to copy over info for a weak sym, that's all.
4659 You might think dyn_relocs need not be copied over; After all,
4660 both syms will be dynamic or both non-dynamic so we're just
4661 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4662 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4663 dyn_relocs in read-only sections, and it does so on what is the
4665 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4668 /* Copy over got entries that we may have already seen to the
4669 symbol which just became indirect. */
4670 if (eind
->elf
.got
.glist
!= NULL
)
4672 if (edir
->elf
.got
.glist
!= NULL
)
4674 struct got_entry
**entp
;
4675 struct got_entry
*ent
;
4677 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4679 struct got_entry
*dent
;
4681 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4682 if (dent
->addend
== ent
->addend
4683 && dent
->owner
== ent
->owner
4684 && dent
->tls_type
== ent
->tls_type
)
4686 dent
->got
.refcount
+= ent
->got
.refcount
;
4693 *entp
= edir
->elf
.got
.glist
;
4696 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4697 eind
->elf
.got
.glist
= NULL
;
4700 /* And plt entries. */
4701 move_plt_plist (eind
, edir
);
4703 if (eind
->elf
.dynindx
!= -1)
4705 if (edir
->elf
.dynindx
!= -1)
4706 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4707 edir
->elf
.dynstr_index
);
4708 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4709 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4710 eind
->elf
.dynindx
= -1;
4711 eind
->elf
.dynstr_index
= 0;
4715 /* Find the function descriptor hash entry from the given function code
4716 hash entry FH. Link the entries via their OH fields. */
4718 static struct ppc_link_hash_entry
*
4719 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4721 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4725 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4727 fdh
= (struct ppc_link_hash_entry
*)
4728 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4732 fdh
->is_func_descriptor
= 1;
4738 return ppc_follow_link (fdh
);
4741 /* Make a fake function descriptor sym for the code sym FH. */
4743 static struct ppc_link_hash_entry
*
4744 make_fdh (struct bfd_link_info
*info
,
4745 struct ppc_link_hash_entry
*fh
)
4749 struct bfd_link_hash_entry
*bh
;
4750 struct ppc_link_hash_entry
*fdh
;
4752 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4753 newsym
= bfd_make_empty_symbol (abfd
);
4754 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4755 newsym
->section
= bfd_und_section_ptr
;
4757 newsym
->flags
= BSF_WEAK
;
4760 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4761 newsym
->flags
, newsym
->section
,
4762 newsym
->value
, NULL
, FALSE
, FALSE
,
4766 fdh
= (struct ppc_link_hash_entry
*) bh
;
4767 fdh
->elf
.non_elf
= 0;
4769 fdh
->is_func_descriptor
= 1;
4776 /* Fix function descriptor symbols defined in .opd sections to be
4780 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4781 struct bfd_link_info
*info
,
4782 Elf_Internal_Sym
*isym
,
4784 flagword
*flags ATTRIBUTE_UNUSED
,
4786 bfd_vma
*value ATTRIBUTE_UNUSED
)
4788 if ((ibfd
->flags
& DYNAMIC
) == 0
4789 && ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4790 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4792 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4794 if ((ibfd
->flags
& DYNAMIC
) == 0)
4795 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4797 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4799 else if (*sec
!= NULL
4800 && strcmp ((*sec
)->name
, ".opd") == 0)
4801 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4803 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4805 if (abiversion (ibfd
) == 0)
4806 set_abiversion (ibfd
, 2);
4807 else if (abiversion (ibfd
) == 1)
4809 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4810 " for ABI version 1\n"), name
);
4811 bfd_set_error (bfd_error_bad_value
);
4819 /* Merge non-visibility st_other attributes: local entry point. */
4822 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4823 const Elf_Internal_Sym
*isym
,
4824 bfd_boolean definition
,
4825 bfd_boolean dynamic
)
4827 if (definition
&& !dynamic
)
4828 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
4829 | ELF_ST_VISIBILITY (h
->other
));
4832 /* This function makes an old ABI object reference to ".bar" cause the
4833 inclusion of a new ABI object archive that defines "bar".
4834 NAME is a symbol defined in an archive. Return a symbol in the hash
4835 table that might be satisfied by the archive symbols. */
4837 static struct elf_link_hash_entry
*
4838 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4839 struct bfd_link_info
*info
,
4842 struct elf_link_hash_entry
*h
;
4846 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4848 /* Don't return this sym if it is a fake function descriptor
4849 created by add_symbol_adjust. */
4850 && !(h
->root
.type
== bfd_link_hash_undefweak
4851 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4857 len
= strlen (name
);
4858 dot_name
= bfd_alloc (abfd
, len
+ 2);
4859 if (dot_name
== NULL
)
4860 return (struct elf_link_hash_entry
*) 0 - 1;
4862 memcpy (dot_name
+ 1, name
, len
+ 1);
4863 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4864 bfd_release (abfd
, dot_name
);
4868 /* This function satisfies all old ABI object references to ".bar" if a
4869 new ABI object defines "bar". Well, at least, undefined dot symbols
4870 are made weak. This stops later archive searches from including an
4871 object if we already have a function descriptor definition. It also
4872 prevents the linker complaining about undefined symbols.
4873 We also check and correct mismatched symbol visibility here. The
4874 most restrictive visibility of the function descriptor and the
4875 function entry symbol is used. */
4878 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4880 struct ppc_link_hash_table
*htab
;
4881 struct ppc_link_hash_entry
*fdh
;
4883 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4886 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4887 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4889 if (eh
->elf
.root
.root
.string
[0] != '.')
4892 htab
= ppc_hash_table (info
);
4896 fdh
= lookup_fdh (eh
, htab
);
4899 if (!info
->relocatable
4900 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4901 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4902 && eh
->elf
.ref_regular
)
4904 /* Make an undefweak function descriptor sym, which is enough to
4905 pull in an --as-needed shared lib, but won't cause link
4906 errors. Archives are handled elsewhere. */
4907 fdh
= make_fdh (info
, eh
);
4910 fdh
->elf
.ref_regular
= 1;
4915 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4916 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4917 if (entry_vis
< descr_vis
)
4918 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4919 else if (entry_vis
> descr_vis
)
4920 eh
->elf
.other
+= descr_vis
- entry_vis
;
4922 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4923 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4924 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4926 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4927 eh
->was_undefined
= 1;
4928 htab
->twiddled_syms
= 1;
4935 /* Process list of dot-symbols we made in link_hash_newfunc. */
4938 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4940 struct ppc_link_hash_table
*htab
;
4941 struct ppc_link_hash_entry
**p
, *eh
;
4943 if (!is_ppc64_elf (info
->output_bfd
))
4945 htab
= ppc_hash_table (info
);
4949 if (is_ppc64_elf (ibfd
))
4951 p
= &htab
->dot_syms
;
4952 while ((eh
= *p
) != NULL
)
4955 if (&eh
->elf
== htab
->elf
.hgot
)
4957 else if (htab
->elf
.hgot
== NULL
4958 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
4959 htab
->elf
.hgot
= &eh
->elf
;
4960 else if (!add_symbol_adjust (eh
, info
))
4962 p
= &eh
->u
.next_dot_sym
;
4966 /* Clear the list for non-ppc64 input files. */
4967 p
= &htab
->dot_syms
;
4968 while ((eh
= *p
) != NULL
)
4971 p
= &eh
->u
.next_dot_sym
;
4974 /* We need to fix the undefs list for any syms we have twiddled to
4976 if (htab
->twiddled_syms
)
4978 bfd_link_repair_undef_list (&htab
->elf
.root
);
4979 htab
->twiddled_syms
= 0;
4984 /* Undo hash table changes when an --as-needed input file is determined
4985 not to be needed. */
4988 ppc64_elf_notice_as_needed (bfd
*ibfd
,
4989 struct bfd_link_info
*info
,
4990 enum notice_asneeded_action act
)
4992 if (act
== notice_not_needed
)
4994 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4999 htab
->dot_syms
= NULL
;
5001 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5004 /* If --just-symbols against a final linked binary, then assume we need
5005 toc adjusting stubs when calling functions defined there. */
5008 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5010 if ((sec
->flags
& SEC_CODE
) != 0
5011 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5012 && is_ppc64_elf (sec
->owner
))
5014 if (abiversion (sec
->owner
) >= 2
5015 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5016 sec
->has_toc_reloc
= 1;
5018 _bfd_elf_link_just_syms (sec
, info
);
5021 static struct plt_entry
**
5022 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5023 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5025 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5026 struct plt_entry
**local_plt
;
5027 unsigned char *local_got_tls_masks
;
5029 if (local_got_ents
== NULL
)
5031 bfd_size_type size
= symtab_hdr
->sh_info
;
5033 size
*= (sizeof (*local_got_ents
)
5034 + sizeof (*local_plt
)
5035 + sizeof (*local_got_tls_masks
));
5036 local_got_ents
= bfd_zalloc (abfd
, size
);
5037 if (local_got_ents
== NULL
)
5039 elf_local_got_ents (abfd
) = local_got_ents
;
5042 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5044 struct got_entry
*ent
;
5046 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5047 if (ent
->addend
== r_addend
5048 && ent
->owner
== abfd
5049 && ent
->tls_type
== tls_type
)
5053 bfd_size_type amt
= sizeof (*ent
);
5054 ent
= bfd_alloc (abfd
, amt
);
5057 ent
->next
= local_got_ents
[r_symndx
];
5058 ent
->addend
= r_addend
;
5060 ent
->tls_type
= tls_type
;
5061 ent
->is_indirect
= FALSE
;
5062 ent
->got
.refcount
= 0;
5063 local_got_ents
[r_symndx
] = ent
;
5065 ent
->got
.refcount
+= 1;
5068 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5069 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5070 local_got_tls_masks
[r_symndx
] |= tls_type
;
5072 return local_plt
+ r_symndx
;
5076 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5078 struct plt_entry
*ent
;
5080 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5081 if (ent
->addend
== addend
)
5085 bfd_size_type amt
= sizeof (*ent
);
5086 ent
= bfd_alloc (abfd
, amt
);
5090 ent
->addend
= addend
;
5091 ent
->plt
.refcount
= 0;
5094 ent
->plt
.refcount
+= 1;
5099 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5101 return (r_type
== R_PPC64_REL24
5102 || r_type
== R_PPC64_REL14
5103 || r_type
== R_PPC64_REL14_BRTAKEN
5104 || r_type
== R_PPC64_REL14_BRNTAKEN
5105 || r_type
== R_PPC64_ADDR24
5106 || r_type
== R_PPC64_ADDR14
5107 || r_type
== R_PPC64_ADDR14_BRTAKEN
5108 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5111 /* Look through the relocs for a section during the first phase, and
5112 calculate needed space in the global offset table, procedure
5113 linkage table, and dynamic reloc sections. */
5116 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5117 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5119 struct ppc_link_hash_table
*htab
;
5120 Elf_Internal_Shdr
*symtab_hdr
;
5121 struct elf_link_hash_entry
**sym_hashes
;
5122 const Elf_Internal_Rela
*rel
;
5123 const Elf_Internal_Rela
*rel_end
;
5125 asection
**opd_sym_map
;
5126 struct elf_link_hash_entry
*tga
, *dottga
;
5128 if (info
->relocatable
)
5131 /* Don't do anything special with non-loaded, non-alloced sections.
5132 In particular, any relocs in such sections should not affect GOT
5133 and PLT reference counting (ie. we don't allow them to create GOT
5134 or PLT entries), there's no possibility or desire to optimize TLS
5135 relocs, and there's not much point in propagating relocs to shared
5136 libs that the dynamic linker won't relocate. */
5137 if ((sec
->flags
& SEC_ALLOC
) == 0)
5140 BFD_ASSERT (is_ppc64_elf (abfd
));
5142 htab
= ppc_hash_table (info
);
5146 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5147 FALSE
, FALSE
, TRUE
);
5148 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5149 FALSE
, FALSE
, TRUE
);
5150 symtab_hdr
= &elf_symtab_hdr (abfd
);
5151 sym_hashes
= elf_sym_hashes (abfd
);
5154 if (strcmp (sec
->name
, ".opd") == 0)
5156 /* Garbage collection needs some extra help with .opd sections.
5157 We don't want to necessarily keep everything referenced by
5158 relocs in .opd, as that would keep all functions. Instead,
5159 if we reference an .opd symbol (a function descriptor), we
5160 want to keep the function code symbol's section. This is
5161 easy for global symbols, but for local syms we need to keep
5162 information about the associated function section. */
5165 if (abiversion (abfd
) == 0)
5166 set_abiversion (abfd
, 1);
5167 else if (abiversion (abfd
) == 2)
5169 info
->callbacks
->einfo (_("%P: .opd not allowed in ABI version %d\n"),
5171 bfd_set_error (bfd_error_bad_value
);
5174 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
5175 opd_sym_map
= bfd_zalloc (abfd
, amt
);
5176 if (opd_sym_map
== NULL
)
5178 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
5179 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
5180 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
5183 rel_end
= relocs
+ sec
->reloc_count
;
5184 for (rel
= relocs
; rel
< rel_end
; rel
++)
5186 unsigned long r_symndx
;
5187 struct elf_link_hash_entry
*h
;
5188 enum elf_ppc64_reloc_type r_type
;
5190 struct _ppc64_elf_section_data
*ppc64_sec
;
5191 struct plt_entry
**ifunc
;
5193 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5194 if (r_symndx
< symtab_hdr
->sh_info
)
5198 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5199 h
= elf_follow_link (h
);
5201 /* PR15323, ref flags aren't set for references in the same
5203 h
->root
.non_ir_ref
= 1;
5205 if (h
== htab
->elf
.hgot
)
5206 sec
->has_toc_reloc
= 1;
5213 if (h
->type
== STT_GNU_IFUNC
)
5216 ifunc
= &h
->plt
.plist
;
5221 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5226 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5228 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5229 rel
->r_addend
, PLT_IFUNC
);
5234 r_type
= ELF64_R_TYPE (rel
->r_info
);
5235 if (is_branch_reloc (r_type
))
5237 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
5240 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5241 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5242 /* We have a new-style __tls_get_addr call with a marker
5246 /* Mark this section as having an old-style call. */
5247 sec
->has_tls_get_addr_call
= 1;
5250 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5252 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5260 /* These special tls relocs tie a call to __tls_get_addr with
5261 its parameter symbol. */
5264 case R_PPC64_GOT_TLSLD16
:
5265 case R_PPC64_GOT_TLSLD16_LO
:
5266 case R_PPC64_GOT_TLSLD16_HI
:
5267 case R_PPC64_GOT_TLSLD16_HA
:
5268 tls_type
= TLS_TLS
| TLS_LD
;
5271 case R_PPC64_GOT_TLSGD16
:
5272 case R_PPC64_GOT_TLSGD16_LO
:
5273 case R_PPC64_GOT_TLSGD16_HI
:
5274 case R_PPC64_GOT_TLSGD16_HA
:
5275 tls_type
= TLS_TLS
| TLS_GD
;
5278 case R_PPC64_GOT_TPREL16_DS
:
5279 case R_PPC64_GOT_TPREL16_LO_DS
:
5280 case R_PPC64_GOT_TPREL16_HI
:
5281 case R_PPC64_GOT_TPREL16_HA
:
5282 if (!info
->executable
)
5283 info
->flags
|= DF_STATIC_TLS
;
5284 tls_type
= TLS_TLS
| TLS_TPREL
;
5287 case R_PPC64_GOT_DTPREL16_DS
:
5288 case R_PPC64_GOT_DTPREL16_LO_DS
:
5289 case R_PPC64_GOT_DTPREL16_HI
:
5290 case R_PPC64_GOT_DTPREL16_HA
:
5291 tls_type
= TLS_TLS
| TLS_DTPREL
;
5293 sec
->has_tls_reloc
= 1;
5297 case R_PPC64_GOT16_DS
:
5298 case R_PPC64_GOT16_HA
:
5299 case R_PPC64_GOT16_HI
:
5300 case R_PPC64_GOT16_LO
:
5301 case R_PPC64_GOT16_LO_DS
:
5302 /* This symbol requires a global offset table entry. */
5303 sec
->has_toc_reloc
= 1;
5304 if (r_type
== R_PPC64_GOT_TLSLD16
5305 || r_type
== R_PPC64_GOT_TLSGD16
5306 || r_type
== R_PPC64_GOT_TPREL16_DS
5307 || r_type
== R_PPC64_GOT_DTPREL16_DS
5308 || r_type
== R_PPC64_GOT16
5309 || r_type
== R_PPC64_GOT16_DS
)
5311 htab
->do_multi_toc
= 1;
5312 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5315 if (ppc64_elf_tdata (abfd
)->got
== NULL
5316 && !create_got_section (abfd
, info
))
5321 struct ppc_link_hash_entry
*eh
;
5322 struct got_entry
*ent
;
5324 eh
= (struct ppc_link_hash_entry
*) h
;
5325 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5326 if (ent
->addend
== rel
->r_addend
5327 && ent
->owner
== abfd
5328 && ent
->tls_type
== tls_type
)
5332 bfd_size_type amt
= sizeof (*ent
);
5333 ent
= bfd_alloc (abfd
, amt
);
5336 ent
->next
= eh
->elf
.got
.glist
;
5337 ent
->addend
= rel
->r_addend
;
5339 ent
->tls_type
= tls_type
;
5340 ent
->is_indirect
= FALSE
;
5341 ent
->got
.refcount
= 0;
5342 eh
->elf
.got
.glist
= ent
;
5344 ent
->got
.refcount
+= 1;
5345 eh
->tls_mask
|= tls_type
;
5348 /* This is a global offset table entry for a local symbol. */
5349 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5350 rel
->r_addend
, tls_type
))
5353 /* We may also need a plt entry if the symbol turns out to be
5355 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) == 2)
5357 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5362 case R_PPC64_PLT16_HA
:
5363 case R_PPC64_PLT16_HI
:
5364 case R_PPC64_PLT16_LO
:
5367 /* This symbol requires a procedure linkage table entry. We
5368 actually build the entry in adjust_dynamic_symbol,
5369 because this might be a case of linking PIC code without
5370 linking in any dynamic objects, in which case we don't
5371 need to generate a procedure linkage table after all. */
5374 /* It does not make sense to have a procedure linkage
5375 table entry for a local symbol. */
5376 bfd_set_error (bfd_error_bad_value
);
5381 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5384 if (h
->root
.root
.string
[0] == '.'
5385 && h
->root
.root
.string
[1] != '\0')
5386 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5390 /* The following relocations don't need to propagate the
5391 relocation if linking a shared object since they are
5392 section relative. */
5393 case R_PPC64_SECTOFF
:
5394 case R_PPC64_SECTOFF_LO
:
5395 case R_PPC64_SECTOFF_HI
:
5396 case R_PPC64_SECTOFF_HA
:
5397 case R_PPC64_SECTOFF_DS
:
5398 case R_PPC64_SECTOFF_LO_DS
:
5399 case R_PPC64_DTPREL16
:
5400 case R_PPC64_DTPREL16_LO
:
5401 case R_PPC64_DTPREL16_HI
:
5402 case R_PPC64_DTPREL16_HA
:
5403 case R_PPC64_DTPREL16_DS
:
5404 case R_PPC64_DTPREL16_LO_DS
:
5405 case R_PPC64_DTPREL16_HIGH
:
5406 case R_PPC64_DTPREL16_HIGHA
:
5407 case R_PPC64_DTPREL16_HIGHER
:
5408 case R_PPC64_DTPREL16_HIGHERA
:
5409 case R_PPC64_DTPREL16_HIGHEST
:
5410 case R_PPC64_DTPREL16_HIGHESTA
:
5415 case R_PPC64_REL16_LO
:
5416 case R_PPC64_REL16_HI
:
5417 case R_PPC64_REL16_HA
:
5420 /* Not supported as a dynamic relocation. */
5421 case R_PPC64_ADDR64_LOCAL
:
5424 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5426 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5427 "in shared libraries and PIEs.\n"),
5428 abfd
, sec
, rel
->r_offset
,
5429 ppc64_elf_howto_table
[r_type
]->name
);
5430 bfd_set_error (bfd_error_bad_value
);
5436 case R_PPC64_TOC16_DS
:
5437 htab
->do_multi_toc
= 1;
5438 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5439 case R_PPC64_TOC16_LO
:
5440 case R_PPC64_TOC16_HI
:
5441 case R_PPC64_TOC16_HA
:
5442 case R_PPC64_TOC16_LO_DS
:
5443 sec
->has_toc_reloc
= 1;
5446 /* This relocation describes the C++ object vtable hierarchy.
5447 Reconstruct it for later use during GC. */
5448 case R_PPC64_GNU_VTINHERIT
:
5449 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5453 /* This relocation describes which C++ vtable entries are actually
5454 used. Record for later use during GC. */
5455 case R_PPC64_GNU_VTENTRY
:
5456 BFD_ASSERT (h
!= NULL
);
5458 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5463 case R_PPC64_REL14_BRTAKEN
:
5464 case R_PPC64_REL14_BRNTAKEN
:
5466 asection
*dest
= NULL
;
5468 /* Heuristic: If jumping outside our section, chances are
5469 we are going to need a stub. */
5472 /* If the sym is weak it may be overridden later, so
5473 don't assume we know where a weak sym lives. */
5474 if (h
->root
.type
== bfd_link_hash_defined
)
5475 dest
= h
->root
.u
.def
.section
;
5479 Elf_Internal_Sym
*isym
;
5481 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5486 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5490 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5495 if (h
!= NULL
&& ifunc
== NULL
)
5497 /* We may need a .plt entry if the function this reloc
5498 refers to is in a shared lib. */
5499 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5502 if (h
->root
.root
.string
[0] == '.'
5503 && h
->root
.root
.string
[1] != '\0')
5504 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5505 if (h
== tga
|| h
== dottga
)
5506 sec
->has_tls_reloc
= 1;
5510 case R_PPC64_TPREL64
:
5511 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5512 if (!info
->executable
)
5513 info
->flags
|= DF_STATIC_TLS
;
5516 case R_PPC64_DTPMOD64
:
5517 if (rel
+ 1 < rel_end
5518 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5519 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5520 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5522 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5525 case R_PPC64_DTPREL64
:
5526 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5528 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5529 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5530 /* This is the second reloc of a dtpmod, dtprel pair.
5531 Don't mark with TLS_DTPREL. */
5535 sec
->has_tls_reloc
= 1;
5538 struct ppc_link_hash_entry
*eh
;
5539 eh
= (struct ppc_link_hash_entry
*) h
;
5540 eh
->tls_mask
|= tls_type
;
5543 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5544 rel
->r_addend
, tls_type
))
5547 ppc64_sec
= ppc64_elf_section_data (sec
);
5548 if (ppc64_sec
->sec_type
!= sec_toc
)
5552 /* One extra to simplify get_tls_mask. */
5553 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5554 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5555 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5557 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5558 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5559 if (ppc64_sec
->u
.toc
.add
== NULL
)
5561 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5562 ppc64_sec
->sec_type
= sec_toc
;
5564 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5565 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5566 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5568 /* Mark the second slot of a GD or LD entry.
5569 -1 to indicate GD and -2 to indicate LD. */
5570 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5571 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5572 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5573 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5576 case R_PPC64_TPREL16
:
5577 case R_PPC64_TPREL16_LO
:
5578 case R_PPC64_TPREL16_HI
:
5579 case R_PPC64_TPREL16_HA
:
5580 case R_PPC64_TPREL16_DS
:
5581 case R_PPC64_TPREL16_LO_DS
:
5582 case R_PPC64_TPREL16_HIGH
:
5583 case R_PPC64_TPREL16_HIGHA
:
5584 case R_PPC64_TPREL16_HIGHER
:
5585 case R_PPC64_TPREL16_HIGHERA
:
5586 case R_PPC64_TPREL16_HIGHEST
:
5587 case R_PPC64_TPREL16_HIGHESTA
:
5590 if (!info
->executable
)
5591 info
->flags
|= DF_STATIC_TLS
;
5596 case R_PPC64_ADDR64
:
5597 if (opd_sym_map
!= NULL
5598 && rel
+ 1 < rel_end
5599 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5603 if (h
->root
.root
.string
[0] == '.'
5604 && h
->root
.root
.string
[1] != 0
5605 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5608 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5613 Elf_Internal_Sym
*isym
;
5615 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5620 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5621 if (s
!= NULL
&& s
!= sec
)
5622 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5627 case R_PPC64_ADDR16
:
5628 case R_PPC64_ADDR16_DS
:
5629 case R_PPC64_ADDR16_HA
:
5630 case R_PPC64_ADDR16_HI
:
5631 case R_PPC64_ADDR16_HIGH
:
5632 case R_PPC64_ADDR16_HIGHA
:
5633 case R_PPC64_ADDR16_HIGHER
:
5634 case R_PPC64_ADDR16_HIGHERA
:
5635 case R_PPC64_ADDR16_HIGHEST
:
5636 case R_PPC64_ADDR16_HIGHESTA
:
5637 case R_PPC64_ADDR16_LO
:
5638 case R_PPC64_ADDR16_LO_DS
:
5639 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) == 2
5640 && rel
->r_addend
== 0)
5642 /* We may need a .plt entry if this reloc refers to a
5643 function in a shared lib. */
5644 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5646 h
->pointer_equality_needed
= 1;
5653 case R_PPC64_ADDR14
:
5654 case R_PPC64_ADDR14_BRNTAKEN
:
5655 case R_PPC64_ADDR14_BRTAKEN
:
5656 case R_PPC64_ADDR24
:
5657 case R_PPC64_ADDR32
:
5658 case R_PPC64_UADDR16
:
5659 case R_PPC64_UADDR32
:
5660 case R_PPC64_UADDR64
:
5662 if (h
!= NULL
&& !info
->shared
)
5663 /* We may need a copy reloc. */
5666 /* Don't propagate .opd relocs. */
5667 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5670 /* If we are creating a shared library, and this is a reloc
5671 against a global symbol, or a non PC relative reloc
5672 against a local symbol, then we need to copy the reloc
5673 into the shared library. However, if we are linking with
5674 -Bsymbolic, we do not need to copy a reloc against a
5675 global symbol which is defined in an object we are
5676 including in the link (i.e., DEF_REGULAR is set). At
5677 this point we have not seen all the input files, so it is
5678 possible that DEF_REGULAR is not set now but will be set
5679 later (it is never cleared). In case of a weak definition,
5680 DEF_REGULAR may be cleared later by a strong definition in
5681 a shared library. We account for that possibility below by
5682 storing information in the dyn_relocs field of the hash
5683 table entry. A similar situation occurs when creating
5684 shared libraries and symbol visibility changes render the
5687 If on the other hand, we are creating an executable, we
5688 may need to keep relocations for symbols satisfied by a
5689 dynamic library if we manage to avoid copy relocs for the
5693 && (must_be_dyn_reloc (info
, r_type
)
5695 && (!SYMBOLIC_BIND (info
, h
)
5696 || h
->root
.type
== bfd_link_hash_defweak
5697 || !h
->def_regular
))))
5698 || (ELIMINATE_COPY_RELOCS
5701 && (h
->root
.type
== bfd_link_hash_defweak
5702 || !h
->def_regular
))
5706 /* We must copy these reloc types into the output file.
5707 Create a reloc section in dynobj and make room for
5711 sreloc
= _bfd_elf_make_dynamic_reloc_section
5712 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5718 /* If this is a global symbol, we count the number of
5719 relocations we need for this symbol. */
5722 struct elf_dyn_relocs
*p
;
5723 struct elf_dyn_relocs
**head
;
5725 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5727 if (p
== NULL
|| p
->sec
!= sec
)
5729 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5739 if (!must_be_dyn_reloc (info
, r_type
))
5744 /* Track dynamic relocs needed for local syms too.
5745 We really need local syms available to do this
5747 struct ppc_dyn_relocs
*p
;
5748 struct ppc_dyn_relocs
**head
;
5749 bfd_boolean is_ifunc
;
5752 Elf_Internal_Sym
*isym
;
5754 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5759 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5763 vpp
= &elf_section_data (s
)->local_dynrel
;
5764 head
= (struct ppc_dyn_relocs
**) vpp
;
5765 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5767 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5769 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5771 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5777 p
->ifunc
= is_ifunc
;
5793 /* Merge backend specific data from an object file to the output
5794 object file when linking. */
5797 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5799 unsigned long iflags
, oflags
;
5801 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
5804 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
5807 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
5810 iflags
= elf_elfheader (ibfd
)->e_flags
;
5811 oflags
= elf_elfheader (obfd
)->e_flags
;
5813 if (!elf_flags_init (obfd
) || oflags
== 0)
5815 elf_flags_init (obfd
) = TRUE
;
5816 elf_elfheader (obfd
)->e_flags
= iflags
;
5818 else if (iflags
== oflags
|| iflags
== 0)
5820 else if (iflags
& ~EF_PPC64_ABI
)
5822 (*_bfd_error_handler
)
5823 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
5824 bfd_set_error (bfd_error_bad_value
);
5829 (*_bfd_error_handler
)
5830 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5831 ibfd
, iflags
, oflags
);
5832 bfd_set_error (bfd_error_bad_value
);
5836 /* Merge Tag_compatibility attributes and any common GNU ones. */
5837 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
5843 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
5845 /* Print normal ELF private data. */
5846 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
5848 if (elf_elfheader (abfd
)->e_flags
!= 0)
5852 /* xgettext:c-format */
5853 fprintf (file
, _("private flags = 0x%lx:"),
5854 elf_elfheader (abfd
)->e_flags
);
5856 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
5857 fprintf (file
, _(" [abiv%ld]"),
5858 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
5865 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5866 of the code entry point, and its section. */
5869 opd_entry_value (asection
*opd_sec
,
5871 asection
**code_sec
,
5873 bfd_boolean in_code_sec
)
5875 bfd
*opd_bfd
= opd_sec
->owner
;
5876 Elf_Internal_Rela
*relocs
;
5877 Elf_Internal_Rela
*lo
, *hi
, *look
;
5880 /* No relocs implies we are linking a --just-symbols object, or looking
5881 at a final linked executable with addr2line or somesuch. */
5882 if (opd_sec
->reloc_count
== 0)
5884 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
5886 if (contents
== NULL
)
5888 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
5889 return (bfd_vma
) -1;
5890 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
5893 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
5894 if (code_sec
!= NULL
)
5896 asection
*sec
, *likely
= NULL
;
5902 && val
< sec
->vma
+ sec
->size
)
5908 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5910 && (sec
->flags
& SEC_LOAD
) != 0
5911 && (sec
->flags
& SEC_ALLOC
) != 0)
5916 if (code_off
!= NULL
)
5917 *code_off
= val
- likely
->vma
;
5923 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5925 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
5927 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5929 /* Go find the opd reloc at the sym address. */
5931 BFD_ASSERT (lo
!= NULL
);
5932 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5936 look
= lo
+ (hi
- lo
) / 2;
5937 if (look
->r_offset
< offset
)
5939 else if (look
->r_offset
> offset
)
5943 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5945 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5946 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5948 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5951 if (symndx
< symtab_hdr
->sh_info
5952 || elf_sym_hashes (opd_bfd
) == NULL
)
5954 Elf_Internal_Sym
*sym
;
5956 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5959 size_t symcnt
= symtab_hdr
->sh_info
;
5960 if (elf_sym_hashes (opd_bfd
) == NULL
)
5961 symcnt
= symtab_hdr
->sh_size
/ symtab_hdr
->sh_entsize
;
5962 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
, symcnt
,
5963 0, NULL
, NULL
, NULL
);
5966 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5970 val
= sym
->st_value
;
5971 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5972 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5976 struct elf_link_hash_entry
**sym_hashes
;
5977 struct elf_link_hash_entry
*rh
;
5979 sym_hashes
= elf_sym_hashes (opd_bfd
);
5980 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5983 rh
= elf_follow_link (rh
);
5984 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5985 || rh
->root
.type
== bfd_link_hash_defweak
);
5986 val
= rh
->root
.u
.def
.value
;
5987 sec
= rh
->root
.u
.def
.section
;
5991 /* Handle the odd case where we can be called
5992 during bfd_elf_link_add_symbols before the
5993 symbol hashes have been fully populated. */
5994 Elf_Internal_Sym
*sym
;
5996 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
, 1,
5997 symndx
, NULL
, NULL
, NULL
);
6001 val
= sym
->st_value
;
6002 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6006 val
+= look
->r_addend
;
6007 if (code_off
!= NULL
)
6009 if (code_sec
!= NULL
)
6011 if (in_code_sec
&& *code_sec
!= sec
)
6016 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
6017 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6026 /* If the ELF symbol SYM might be a function in SEC, return the
6027 function size and set *CODE_OFF to the function's entry point,
6028 otherwise return zero. */
6030 static bfd_size_type
6031 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6036 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6037 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6041 if (!(sym
->flags
& BSF_SYNTHETIC
))
6042 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6044 if (strcmp (sym
->section
->name
, ".opd") == 0)
6046 if (opd_entry_value (sym
->section
, sym
->value
,
6047 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6049 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6050 symbol. This size has nothing to do with the code size of the
6051 function, which is what we're supposed to return, but the
6052 code size isn't available without looking up the dot-sym.
6053 However, doing that would be a waste of time particularly
6054 since elf_find_function will look at the dot-sym anyway.
6055 Now, elf_find_function will keep the largest size of any
6056 function sym found at the code address of interest, so return
6057 1 here to avoid it incorrectly caching a larger function size
6058 for a small function. This does mean we return the wrong
6059 size for a new-ABI function of size 24, but all that does is
6060 disable caching for such functions. */
6066 if (sym
->section
!= sec
)
6068 *code_off
= sym
->value
;
6075 /* Return true if symbol is defined in a regular object file. */
6078 is_static_defined (struct elf_link_hash_entry
*h
)
6080 return ((h
->root
.type
== bfd_link_hash_defined
6081 || h
->root
.type
== bfd_link_hash_defweak
)
6082 && h
->root
.u
.def
.section
!= NULL
6083 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6086 /* If FDH is a function descriptor symbol, return the associated code
6087 entry symbol if it is defined. Return NULL otherwise. */
6089 static struct ppc_link_hash_entry
*
6090 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6092 if (fdh
->is_func_descriptor
)
6094 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6095 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6096 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6102 /* If FH is a function code entry symbol, return the associated
6103 function descriptor symbol if it is defined. Return NULL otherwise. */
6105 static struct ppc_link_hash_entry
*
6106 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6109 && fh
->oh
->is_func_descriptor
)
6111 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6112 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6113 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6119 /* Mark all our entry sym sections, both opd and code section. */
6122 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6124 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6125 struct bfd_sym_chain
*sym
;
6130 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6132 struct ppc_link_hash_entry
*eh
, *fh
;
6135 eh
= (struct ppc_link_hash_entry
*)
6136 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6139 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6140 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6143 fh
= defined_code_entry (eh
);
6146 sec
= fh
->elf
.root
.u
.def
.section
;
6147 sec
->flags
|= SEC_KEEP
;
6149 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6150 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6151 eh
->elf
.root
.u
.def
.value
,
6152 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6153 sec
->flags
|= SEC_KEEP
;
6155 sec
= eh
->elf
.root
.u
.def
.section
;
6156 sec
->flags
|= SEC_KEEP
;
6160 /* Mark sections containing dynamically referenced symbols. When
6161 building shared libraries, we must assume that any visible symbol is
6165 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6167 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6168 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6169 struct ppc_link_hash_entry
*fdh
;
6170 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6172 /* Dynamic linking info is on the func descriptor sym. */
6173 fdh
= defined_func_desc (eh
);
6177 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6178 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6179 && (eh
->elf
.ref_dynamic
6180 || (eh
->elf
.def_regular
6181 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6182 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6183 && (!info
->executable
6184 || info
->export_dynamic
6187 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6188 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6189 || !bfd_hide_sym_by_version (info
->version_info
,
6190 eh
->elf
.root
.root
.string
)))))
6193 struct ppc_link_hash_entry
*fh
;
6195 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6197 /* Function descriptor syms cause the associated
6198 function code sym section to be marked. */
6199 fh
= defined_code_entry (eh
);
6202 code_sec
= fh
->elf
.root
.u
.def
.section
;
6203 code_sec
->flags
|= SEC_KEEP
;
6205 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6206 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6207 eh
->elf
.root
.u
.def
.value
,
6208 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6209 code_sec
->flags
|= SEC_KEEP
;
6215 /* Return the section that should be marked against GC for a given
6219 ppc64_elf_gc_mark_hook (asection
*sec
,
6220 struct bfd_link_info
*info
,
6221 Elf_Internal_Rela
*rel
,
6222 struct elf_link_hash_entry
*h
,
6223 Elf_Internal_Sym
*sym
)
6227 /* Syms return NULL if we're marking .opd, so we avoid marking all
6228 function sections, as all functions are referenced in .opd. */
6230 if (get_opd_info (sec
) != NULL
)
6235 enum elf_ppc64_reloc_type r_type
;
6236 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6238 r_type
= ELF64_R_TYPE (rel
->r_info
);
6241 case R_PPC64_GNU_VTINHERIT
:
6242 case R_PPC64_GNU_VTENTRY
:
6246 switch (h
->root
.type
)
6248 case bfd_link_hash_defined
:
6249 case bfd_link_hash_defweak
:
6250 eh
= (struct ppc_link_hash_entry
*) h
;
6251 fdh
= defined_func_desc (eh
);
6255 /* Function descriptor syms cause the associated
6256 function code sym section to be marked. */
6257 fh
= defined_code_entry (eh
);
6260 /* They also mark their opd section. */
6261 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6263 rsec
= fh
->elf
.root
.u
.def
.section
;
6265 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6266 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6267 eh
->elf
.root
.u
.def
.value
,
6268 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6269 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6271 rsec
= h
->root
.u
.def
.section
;
6274 case bfd_link_hash_common
:
6275 rsec
= h
->root
.u
.c
.p
->section
;
6279 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6285 struct _opd_sec_data
*opd
;
6287 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6288 opd
= get_opd_info (rsec
);
6289 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6293 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
6300 /* Update the .got, .plt. and dynamic reloc reference counts for the
6301 section being removed. */
6304 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6305 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6307 struct ppc_link_hash_table
*htab
;
6308 Elf_Internal_Shdr
*symtab_hdr
;
6309 struct elf_link_hash_entry
**sym_hashes
;
6310 struct got_entry
**local_got_ents
;
6311 const Elf_Internal_Rela
*rel
, *relend
;
6313 if (info
->relocatable
)
6316 if ((sec
->flags
& SEC_ALLOC
) == 0)
6319 elf_section_data (sec
)->local_dynrel
= NULL
;
6321 htab
= ppc_hash_table (info
);
6325 symtab_hdr
= &elf_symtab_hdr (abfd
);
6326 sym_hashes
= elf_sym_hashes (abfd
);
6327 local_got_ents
= elf_local_got_ents (abfd
);
6329 relend
= relocs
+ sec
->reloc_count
;
6330 for (rel
= relocs
; rel
< relend
; rel
++)
6332 unsigned long r_symndx
;
6333 enum elf_ppc64_reloc_type r_type
;
6334 struct elf_link_hash_entry
*h
= NULL
;
6335 unsigned char tls_type
= 0;
6337 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6338 r_type
= ELF64_R_TYPE (rel
->r_info
);
6339 if (r_symndx
>= symtab_hdr
->sh_info
)
6341 struct ppc_link_hash_entry
*eh
;
6342 struct elf_dyn_relocs
**pp
;
6343 struct elf_dyn_relocs
*p
;
6345 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6346 h
= elf_follow_link (h
);
6347 eh
= (struct ppc_link_hash_entry
*) h
;
6349 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6352 /* Everything must go for SEC. */
6358 if (is_branch_reloc (r_type
))
6360 struct plt_entry
**ifunc
= NULL
;
6363 if (h
->type
== STT_GNU_IFUNC
)
6364 ifunc
= &h
->plt
.plist
;
6366 else if (local_got_ents
!= NULL
)
6368 struct plt_entry
**local_plt
= (struct plt_entry
**)
6369 (local_got_ents
+ symtab_hdr
->sh_info
);
6370 unsigned char *local_got_tls_masks
= (unsigned char *)
6371 (local_plt
+ symtab_hdr
->sh_info
);
6372 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6373 ifunc
= local_plt
+ r_symndx
;
6377 struct plt_entry
*ent
;
6379 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
6380 if (ent
->addend
== rel
->r_addend
)
6384 if (ent
->plt
.refcount
> 0)
6385 ent
->plt
.refcount
-= 1;
6392 case R_PPC64_GOT_TLSLD16
:
6393 case R_PPC64_GOT_TLSLD16_LO
:
6394 case R_PPC64_GOT_TLSLD16_HI
:
6395 case R_PPC64_GOT_TLSLD16_HA
:
6396 tls_type
= TLS_TLS
| TLS_LD
;
6399 case R_PPC64_GOT_TLSGD16
:
6400 case R_PPC64_GOT_TLSGD16_LO
:
6401 case R_PPC64_GOT_TLSGD16_HI
:
6402 case R_PPC64_GOT_TLSGD16_HA
:
6403 tls_type
= TLS_TLS
| TLS_GD
;
6406 case R_PPC64_GOT_TPREL16_DS
:
6407 case R_PPC64_GOT_TPREL16_LO_DS
:
6408 case R_PPC64_GOT_TPREL16_HI
:
6409 case R_PPC64_GOT_TPREL16_HA
:
6410 tls_type
= TLS_TLS
| TLS_TPREL
;
6413 case R_PPC64_GOT_DTPREL16_DS
:
6414 case R_PPC64_GOT_DTPREL16_LO_DS
:
6415 case R_PPC64_GOT_DTPREL16_HI
:
6416 case R_PPC64_GOT_DTPREL16_HA
:
6417 tls_type
= TLS_TLS
| TLS_DTPREL
;
6421 case R_PPC64_GOT16_DS
:
6422 case R_PPC64_GOT16_HA
:
6423 case R_PPC64_GOT16_HI
:
6424 case R_PPC64_GOT16_LO
:
6425 case R_PPC64_GOT16_LO_DS
:
6428 struct got_entry
*ent
;
6433 ent
= local_got_ents
[r_symndx
];
6435 for (; ent
!= NULL
; ent
= ent
->next
)
6436 if (ent
->addend
== rel
->r_addend
6437 && ent
->owner
== abfd
6438 && ent
->tls_type
== tls_type
)
6442 if (ent
->got
.refcount
> 0)
6443 ent
->got
.refcount
-= 1;
6447 case R_PPC64_PLT16_HA
:
6448 case R_PPC64_PLT16_HI
:
6449 case R_PPC64_PLT16_LO
:
6453 case R_PPC64_REL14_BRNTAKEN
:
6454 case R_PPC64_REL14_BRTAKEN
:
6458 struct plt_entry
*ent
;
6460 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6461 if (ent
->addend
== rel
->r_addend
)
6463 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6464 ent
->plt
.refcount
-= 1;
6475 /* The maximum size of .sfpr. */
6476 #define SFPR_MAX (218*4)
6478 struct sfpr_def_parms
6480 const char name
[12];
6481 unsigned char lo
, hi
;
6482 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6483 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6486 /* Auto-generate _save*, _rest* functions in .sfpr. */
6489 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6491 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6493 size_t len
= strlen (parm
->name
);
6494 bfd_boolean writing
= FALSE
;
6500 memcpy (sym
, parm
->name
, len
);
6503 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6505 struct elf_link_hash_entry
*h
;
6507 sym
[len
+ 0] = i
/ 10 + '0';
6508 sym
[len
+ 1] = i
% 10 + '0';
6509 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6513 h
->root
.type
= bfd_link_hash_defined
;
6514 h
->root
.u
.def
.section
= htab
->sfpr
;
6515 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6518 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6520 if (htab
->sfpr
->contents
== NULL
)
6522 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6523 if (htab
->sfpr
->contents
== NULL
)
6529 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6531 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6533 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6534 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6542 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6544 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6549 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6551 p
= savegpr0 (abfd
, p
, r
);
6552 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6554 bfd_put_32 (abfd
, BLR
, p
);
6559 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6561 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6566 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6568 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6570 p
= restgpr0 (abfd
, p
, r
);
6571 bfd_put_32 (abfd
, MTLR_R0
, p
);
6575 p
= restgpr0 (abfd
, p
, 30);
6576 p
= restgpr0 (abfd
, p
, 31);
6578 bfd_put_32 (abfd
, BLR
, p
);
6583 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6585 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6590 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6592 p
= savegpr1 (abfd
, p
, r
);
6593 bfd_put_32 (abfd
, BLR
, p
);
6598 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6600 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6605 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6607 p
= restgpr1 (abfd
, p
, r
);
6608 bfd_put_32 (abfd
, BLR
, p
);
6613 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6615 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6620 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6622 p
= savefpr (abfd
, p
, r
);
6623 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6625 bfd_put_32 (abfd
, BLR
, p
);
6630 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6632 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6637 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6639 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6641 p
= restfpr (abfd
, p
, r
);
6642 bfd_put_32 (abfd
, MTLR_R0
, p
);
6646 p
= restfpr (abfd
, p
, 30);
6647 p
= restfpr (abfd
, p
, 31);
6649 bfd_put_32 (abfd
, BLR
, p
);
6654 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6656 p
= savefpr (abfd
, p
, r
);
6657 bfd_put_32 (abfd
, BLR
, p
);
6662 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6664 p
= restfpr (abfd
, p
, r
);
6665 bfd_put_32 (abfd
, BLR
, p
);
6670 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6672 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6674 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6679 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6681 p
= savevr (abfd
, p
, r
);
6682 bfd_put_32 (abfd
, BLR
, p
);
6687 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6689 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6691 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6696 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6698 p
= restvr (abfd
, p
, r
);
6699 bfd_put_32 (abfd
, BLR
, p
);
6703 /* Called via elf_link_hash_traverse to transfer dynamic linking
6704 information on function code symbol entries to their corresponding
6705 function descriptor symbol entries. */
6708 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6710 struct bfd_link_info
*info
;
6711 struct ppc_link_hash_table
*htab
;
6712 struct plt_entry
*ent
;
6713 struct ppc_link_hash_entry
*fh
;
6714 struct ppc_link_hash_entry
*fdh
;
6715 bfd_boolean force_local
;
6717 fh
= (struct ppc_link_hash_entry
*) h
;
6718 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6722 htab
= ppc_hash_table (info
);
6726 /* Resolve undefined references to dot-symbols as the value
6727 in the function descriptor, if we have one in a regular object.
6728 This is to satisfy cases like ".quad .foo". Calls to functions
6729 in dynamic objects are handled elsewhere. */
6730 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6731 && fh
->was_undefined
6732 && (fdh
= defined_func_desc (fh
)) != NULL
6733 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6734 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6735 fdh
->elf
.root
.u
.def
.value
,
6736 &fh
->elf
.root
.u
.def
.section
,
6737 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6739 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6740 fh
->elf
.forced_local
= 1;
6741 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6742 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6745 /* If this is a function code symbol, transfer dynamic linking
6746 information to the function descriptor symbol. */
6750 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6751 if (ent
->plt
.refcount
> 0)
6754 || fh
->elf
.root
.root
.string
[0] != '.'
6755 || fh
->elf
.root
.root
.string
[1] == '\0')
6758 /* Find the corresponding function descriptor symbol. Create it
6759 as undefined if necessary. */
6761 fdh
= lookup_fdh (fh
, htab
);
6763 && !info
->executable
6764 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6765 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6767 fdh
= make_fdh (info
, fh
);
6772 /* Fake function descriptors are made undefweak. If the function
6773 code symbol is strong undefined, make the fake sym the same.
6774 If the function code symbol is defined, then force the fake
6775 descriptor local; We can't support overriding of symbols in a
6776 shared library on a fake descriptor. */
6780 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6782 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6784 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6785 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6787 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6788 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6790 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6795 && !fdh
->elf
.forced_local
6796 && (!info
->executable
6797 || fdh
->elf
.def_dynamic
6798 || fdh
->elf
.ref_dynamic
6799 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6800 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6802 if (fdh
->elf
.dynindx
== -1)
6803 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6805 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6806 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6807 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6808 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6809 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6811 move_plt_plist (fh
, fdh
);
6812 fdh
->elf
.needs_plt
= 1;
6814 fdh
->is_func_descriptor
= 1;
6819 /* Now that the info is on the function descriptor, clear the
6820 function code sym info. Any function code syms for which we
6821 don't have a definition in a regular file, we force local.
6822 This prevents a shared library from exporting syms that have
6823 been imported from another library. Function code syms that
6824 are really in the library we must leave global to prevent the
6825 linker dragging in a definition from a static library. */
6826 force_local
= (!fh
->elf
.def_regular
6828 || !fdh
->elf
.def_regular
6829 || fdh
->elf
.forced_local
);
6830 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6835 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6836 this hook to a) provide some gcc support functions, and b) transfer
6837 dynamic linking information gathered so far on function code symbol
6838 entries, to their corresponding function descriptor symbol entries. */
6841 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6842 struct bfd_link_info
*info
)
6844 struct ppc_link_hash_table
*htab
;
6846 static const struct sfpr_def_parms funcs
[] =
6848 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6849 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6850 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6851 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6852 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6853 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6854 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6855 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6856 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6857 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6858 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6859 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6862 htab
= ppc_hash_table (info
);
6866 if (!info
->relocatable
6867 && htab
->elf
.hgot
!= NULL
)
6869 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
6870 /* Make .TOC. defined so as to prevent it being made dynamic.
6871 The wrong value here is fixed later in ppc64_elf_set_toc. */
6872 htab
->elf
.hgot
->type
= STT_OBJECT
;
6873 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
6874 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
6875 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
6876 htab
->elf
.hgot
->def_regular
= 1;
6877 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
6881 if (htab
->sfpr
== NULL
)
6882 /* We don't have any relocs. */
6885 /* Provide any missing _save* and _rest* functions. */
6886 htab
->sfpr
->size
= 0;
6887 if (htab
->params
->save_restore_funcs
)
6888 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6889 if (!sfpr_define (info
, &funcs
[i
]))
6892 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6894 if (htab
->sfpr
->size
== 0)
6895 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6900 /* Return true if we have dynamic relocs that apply to read-only sections. */
6903 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
6905 struct ppc_link_hash_entry
*eh
;
6906 struct elf_dyn_relocs
*p
;
6908 eh
= (struct ppc_link_hash_entry
*) h
;
6909 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6911 asection
*s
= p
->sec
->output_section
;
6913 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6919 /* Adjust a symbol defined by a dynamic object and referenced by a
6920 regular object. The current definition is in some section of the
6921 dynamic object, but we're not including those sections. We have to
6922 change the definition to something the rest of the link can
6926 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6927 struct elf_link_hash_entry
*h
)
6929 struct ppc_link_hash_table
*htab
;
6932 htab
= ppc_hash_table (info
);
6936 /* Deal with function syms. */
6937 if (h
->type
== STT_FUNC
6938 || h
->type
== STT_GNU_IFUNC
6941 /* Clear procedure linkage table information for any symbol that
6942 won't need a .plt entry. */
6943 struct plt_entry
*ent
;
6944 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6945 if (ent
->plt
.refcount
> 0)
6948 || (h
->type
!= STT_GNU_IFUNC
6949 && (SYMBOL_CALLS_LOCAL (info
, h
)
6950 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6951 && h
->root
.type
== bfd_link_hash_undefweak
))))
6953 h
->plt
.plist
= NULL
;
6956 else if (abiversion (info
->output_bfd
) == 2)
6958 /* After adjust_dynamic_symbol, non_got_ref set in the
6959 non-shared case means that we have allocated space in
6960 .dynbss for the symbol and thus dyn_relocs for this
6961 symbol should be discarded.
6962 If we get here we know we are making a PLT entry for this
6963 symbol, and in an executable we'd normally resolve
6964 relocations against this symbol to the PLT entry. Allow
6965 dynamic relocs if the reference is weak, and the dynamic
6966 relocs will not cause text relocation. */
6967 if (!h
->ref_regular_nonweak
6969 && h
->type
!= STT_GNU_IFUNC
6970 && !readonly_dynrelocs (h
))
6973 /* If making a plt entry, then we don't need copy relocs. */
6978 h
->plt
.plist
= NULL
;
6980 /* If this is a weak symbol, and there is a real definition, the
6981 processor independent code will have arranged for us to see the
6982 real definition first, and we can just use the same value. */
6983 if (h
->u
.weakdef
!= NULL
)
6985 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6986 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6987 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6988 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6989 if (ELIMINATE_COPY_RELOCS
)
6990 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6994 /* If we are creating a shared library, we must presume that the
6995 only references to the symbol are via the global offset table.
6996 For such cases we need not do anything here; the relocations will
6997 be handled correctly by relocate_section. */
7001 /* If there are no references to this symbol that do not use the
7002 GOT, we don't need to generate a copy reloc. */
7003 if (!h
->non_got_ref
)
7006 /* Don't generate a copy reloc for symbols defined in the executable. */
7007 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
7010 /* If we didn't find any dynamic relocs in read-only sections, then
7011 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7012 if (ELIMINATE_COPY_RELOCS
&& !readonly_dynrelocs (h
))
7018 if (h
->plt
.plist
!= NULL
)
7020 /* We should never get here, but unfortunately there are versions
7021 of gcc out there that improperly (for this ABI) put initialized
7022 function pointers, vtable refs and suchlike in read-only
7023 sections. Allow them to proceed, but warn that this might
7024 break at runtime. */
7025 info
->callbacks
->einfo
7026 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7027 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7028 h
->root
.root
.string
);
7031 /* This is a reference to a symbol defined by a dynamic object which
7032 is not a function. */
7034 /* We must allocate the symbol in our .dynbss section, which will
7035 become part of the .bss section of the executable. There will be
7036 an entry for this symbol in the .dynsym section. The dynamic
7037 object will contain position independent code, so all references
7038 from the dynamic object to this symbol will go through the global
7039 offset table. The dynamic linker will use the .dynsym entry to
7040 determine the address it must put in the global offset table, so
7041 both the dynamic object and the regular object will refer to the
7042 same memory location for the variable. */
7044 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7045 to copy the initial value out of the dynamic object and into the
7046 runtime process image. We need to remember the offset into the
7047 .rela.bss section we are going to use. */
7048 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7050 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
7056 return _bfd_elf_adjust_dynamic_copy (h
, s
);
7059 /* If given a function descriptor symbol, hide both the function code
7060 sym and the descriptor. */
7062 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7063 struct elf_link_hash_entry
*h
,
7064 bfd_boolean force_local
)
7066 struct ppc_link_hash_entry
*eh
;
7067 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7069 eh
= (struct ppc_link_hash_entry
*) h
;
7070 if (eh
->is_func_descriptor
)
7072 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7077 struct ppc_link_hash_table
*htab
;
7080 /* We aren't supposed to use alloca in BFD because on
7081 systems which do not have alloca the version in libiberty
7082 calls xmalloc, which might cause the program to crash
7083 when it runs out of memory. This function doesn't have a
7084 return status, so there's no way to gracefully return an
7085 error. So cheat. We know that string[-1] can be safely
7086 accessed; It's either a string in an ELF string table,
7087 or allocated in an objalloc structure. */
7089 p
= eh
->elf
.root
.root
.string
- 1;
7092 htab
= ppc_hash_table (info
);
7096 fh
= (struct ppc_link_hash_entry
*)
7097 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7100 /* Unfortunately, if it so happens that the string we were
7101 looking for was allocated immediately before this string,
7102 then we overwrote the string terminator. That's the only
7103 reason the lookup should fail. */
7106 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7107 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7109 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7110 fh
= (struct ppc_link_hash_entry
*)
7111 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7120 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7125 get_sym_h (struct elf_link_hash_entry
**hp
,
7126 Elf_Internal_Sym
**symp
,
7128 unsigned char **tls_maskp
,
7129 Elf_Internal_Sym
**locsymsp
,
7130 unsigned long r_symndx
,
7133 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7135 if (r_symndx
>= symtab_hdr
->sh_info
)
7137 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7138 struct elf_link_hash_entry
*h
;
7140 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7141 h
= elf_follow_link (h
);
7149 if (symsecp
!= NULL
)
7151 asection
*symsec
= NULL
;
7152 if (h
->root
.type
== bfd_link_hash_defined
7153 || h
->root
.type
== bfd_link_hash_defweak
)
7154 symsec
= h
->root
.u
.def
.section
;
7158 if (tls_maskp
!= NULL
)
7160 struct ppc_link_hash_entry
*eh
;
7162 eh
= (struct ppc_link_hash_entry
*) h
;
7163 *tls_maskp
= &eh
->tls_mask
;
7168 Elf_Internal_Sym
*sym
;
7169 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7171 if (locsyms
== NULL
)
7173 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7174 if (locsyms
== NULL
)
7175 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7176 symtab_hdr
->sh_info
,
7177 0, NULL
, NULL
, NULL
);
7178 if (locsyms
== NULL
)
7180 *locsymsp
= locsyms
;
7182 sym
= locsyms
+ r_symndx
;
7190 if (symsecp
!= NULL
)
7191 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7193 if (tls_maskp
!= NULL
)
7195 struct got_entry
**lgot_ents
;
7196 unsigned char *tls_mask
;
7199 lgot_ents
= elf_local_got_ents (ibfd
);
7200 if (lgot_ents
!= NULL
)
7202 struct plt_entry
**local_plt
= (struct plt_entry
**)
7203 (lgot_ents
+ symtab_hdr
->sh_info
);
7204 unsigned char *lgot_masks
= (unsigned char *)
7205 (local_plt
+ symtab_hdr
->sh_info
);
7206 tls_mask
= &lgot_masks
[r_symndx
];
7208 *tls_maskp
= tls_mask
;
7214 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7215 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7216 type suitable for optimization, and 1 otherwise. */
7219 get_tls_mask (unsigned char **tls_maskp
,
7220 unsigned long *toc_symndx
,
7221 bfd_vma
*toc_addend
,
7222 Elf_Internal_Sym
**locsymsp
,
7223 const Elf_Internal_Rela
*rel
,
7226 unsigned long r_symndx
;
7228 struct elf_link_hash_entry
*h
;
7229 Elf_Internal_Sym
*sym
;
7233 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7234 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7237 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7239 || ppc64_elf_section_data (sec
) == NULL
7240 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7243 /* Look inside a TOC section too. */
7246 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7247 off
= h
->root
.u
.def
.value
;
7250 off
= sym
->st_value
;
7251 off
+= rel
->r_addend
;
7252 BFD_ASSERT (off
% 8 == 0);
7253 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7254 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7255 if (toc_symndx
!= NULL
)
7256 *toc_symndx
= r_symndx
;
7257 if (toc_addend
!= NULL
)
7258 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7259 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7261 if ((h
== NULL
|| is_static_defined (h
))
7262 && (next_r
== -1 || next_r
== -2))
7267 /* Find (or create) an entry in the tocsave hash table. */
7269 static struct tocsave_entry
*
7270 tocsave_find (struct ppc_link_hash_table
*htab
,
7271 enum insert_option insert
,
7272 Elf_Internal_Sym
**local_syms
,
7273 const Elf_Internal_Rela
*irela
,
7276 unsigned long r_indx
;
7277 struct elf_link_hash_entry
*h
;
7278 Elf_Internal_Sym
*sym
;
7279 struct tocsave_entry ent
, *p
;
7281 struct tocsave_entry
**slot
;
7283 r_indx
= ELF64_R_SYM (irela
->r_info
);
7284 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7286 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7288 (*_bfd_error_handler
)
7289 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7294 ent
.offset
= h
->root
.u
.def
.value
;
7296 ent
.offset
= sym
->st_value
;
7297 ent
.offset
+= irela
->r_addend
;
7299 hash
= tocsave_htab_hash (&ent
);
7300 slot
= ((struct tocsave_entry
**)
7301 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7307 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7316 /* Adjust all global syms defined in opd sections. In gcc generated
7317 code for the old ABI, these will already have been done. */
7320 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7322 struct ppc_link_hash_entry
*eh
;
7324 struct _opd_sec_data
*opd
;
7326 if (h
->root
.type
== bfd_link_hash_indirect
)
7329 if (h
->root
.type
!= bfd_link_hash_defined
7330 && h
->root
.type
!= bfd_link_hash_defweak
)
7333 eh
= (struct ppc_link_hash_entry
*) h
;
7334 if (eh
->adjust_done
)
7337 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7338 opd
= get_opd_info (sym_sec
);
7339 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7341 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
7344 /* This entry has been deleted. */
7345 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7348 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7349 if (discarded_section (dsec
))
7351 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7355 eh
->elf
.root
.u
.def
.value
= 0;
7356 eh
->elf
.root
.u
.def
.section
= dsec
;
7359 eh
->elf
.root
.u
.def
.value
+= adjust
;
7360 eh
->adjust_done
= 1;
7365 /* Handles decrementing dynamic reloc counts for the reloc specified by
7366 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7367 have already been determined. */
7370 dec_dynrel_count (bfd_vma r_info
,
7372 struct bfd_link_info
*info
,
7373 Elf_Internal_Sym
**local_syms
,
7374 struct elf_link_hash_entry
*h
,
7375 Elf_Internal_Sym
*sym
)
7377 enum elf_ppc64_reloc_type r_type
;
7378 asection
*sym_sec
= NULL
;
7380 /* Can this reloc be dynamic? This switch, and later tests here
7381 should be kept in sync with the code in check_relocs. */
7382 r_type
= ELF64_R_TYPE (r_info
);
7388 case R_PPC64_TPREL16
:
7389 case R_PPC64_TPREL16_LO
:
7390 case R_PPC64_TPREL16_HI
:
7391 case R_PPC64_TPREL16_HA
:
7392 case R_PPC64_TPREL16_DS
:
7393 case R_PPC64_TPREL16_LO_DS
:
7394 case R_PPC64_TPREL16_HIGH
:
7395 case R_PPC64_TPREL16_HIGHA
:
7396 case R_PPC64_TPREL16_HIGHER
:
7397 case R_PPC64_TPREL16_HIGHERA
:
7398 case R_PPC64_TPREL16_HIGHEST
:
7399 case R_PPC64_TPREL16_HIGHESTA
:
7403 case R_PPC64_TPREL64
:
7404 case R_PPC64_DTPMOD64
:
7405 case R_PPC64_DTPREL64
:
7406 case R_PPC64_ADDR64
:
7410 case R_PPC64_ADDR14
:
7411 case R_PPC64_ADDR14_BRNTAKEN
:
7412 case R_PPC64_ADDR14_BRTAKEN
:
7413 case R_PPC64_ADDR16
:
7414 case R_PPC64_ADDR16_DS
:
7415 case R_PPC64_ADDR16_HA
:
7416 case R_PPC64_ADDR16_HI
:
7417 case R_PPC64_ADDR16_HIGH
:
7418 case R_PPC64_ADDR16_HIGHA
:
7419 case R_PPC64_ADDR16_HIGHER
:
7420 case R_PPC64_ADDR16_HIGHERA
:
7421 case R_PPC64_ADDR16_HIGHEST
:
7422 case R_PPC64_ADDR16_HIGHESTA
:
7423 case R_PPC64_ADDR16_LO
:
7424 case R_PPC64_ADDR16_LO_DS
:
7425 case R_PPC64_ADDR24
:
7426 case R_PPC64_ADDR32
:
7427 case R_PPC64_UADDR16
:
7428 case R_PPC64_UADDR32
:
7429 case R_PPC64_UADDR64
:
7434 if (local_syms
!= NULL
)
7436 unsigned long r_symndx
;
7437 bfd
*ibfd
= sec
->owner
;
7439 r_symndx
= ELF64_R_SYM (r_info
);
7440 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7445 && (must_be_dyn_reloc (info
, r_type
)
7447 && (!SYMBOLIC_BIND (info
, h
)
7448 || h
->root
.type
== bfd_link_hash_defweak
7449 || !h
->def_regular
))))
7450 || (ELIMINATE_COPY_RELOCS
7453 && (h
->root
.type
== bfd_link_hash_defweak
7454 || !h
->def_regular
)))
7461 struct elf_dyn_relocs
*p
;
7462 struct elf_dyn_relocs
**pp
;
7463 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7465 /* elf_gc_sweep may have already removed all dyn relocs associated
7466 with local syms for a given section. Also, symbol flags are
7467 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7468 report a dynreloc miscount. */
7469 if (*pp
== NULL
&& info
->gc_sections
)
7472 while ((p
= *pp
) != NULL
)
7476 if (!must_be_dyn_reloc (info
, r_type
))
7488 struct ppc_dyn_relocs
*p
;
7489 struct ppc_dyn_relocs
**pp
;
7491 bfd_boolean is_ifunc
;
7493 if (local_syms
== NULL
)
7494 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7495 if (sym_sec
== NULL
)
7498 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7499 pp
= (struct ppc_dyn_relocs
**) vpp
;
7501 if (*pp
== NULL
&& info
->gc_sections
)
7504 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7505 while ((p
= *pp
) != NULL
)
7507 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7518 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7520 bfd_set_error (bfd_error_bad_value
);
7524 /* Remove unused Official Procedure Descriptor entries. Currently we
7525 only remove those associated with functions in discarded link-once
7526 sections, or weakly defined functions that have been overridden. It
7527 would be possible to remove many more entries for statically linked
7531 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7534 bfd_boolean some_edited
= FALSE
;
7535 asection
*need_pad
= NULL
;
7536 struct ppc_link_hash_table
*htab
;
7538 htab
= ppc_hash_table (info
);
7542 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7545 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7546 Elf_Internal_Shdr
*symtab_hdr
;
7547 Elf_Internal_Sym
*local_syms
;
7549 struct _opd_sec_data
*opd
;
7550 bfd_boolean need_edit
, add_aux_fields
;
7551 bfd_size_type cnt_16b
= 0;
7553 if (!is_ppc64_elf (ibfd
))
7556 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7557 if (sec
== NULL
|| sec
->size
== 0)
7560 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7563 if (sec
->output_section
== bfd_abs_section_ptr
)
7566 /* Look through the section relocs. */
7567 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7571 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7573 /* Read the relocations. */
7574 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7576 if (relstart
== NULL
)
7579 /* First run through the relocs to check they are sane, and to
7580 determine whether we need to edit this opd section. */
7584 relend
= relstart
+ sec
->reloc_count
;
7585 for (rel
= relstart
; rel
< relend
; )
7587 enum elf_ppc64_reloc_type r_type
;
7588 unsigned long r_symndx
;
7590 struct elf_link_hash_entry
*h
;
7591 Elf_Internal_Sym
*sym
;
7593 /* .opd contains a regular array of 16 or 24 byte entries. We're
7594 only interested in the reloc pointing to a function entry
7596 if (rel
->r_offset
!= offset
7597 || rel
+ 1 >= relend
7598 || (rel
+ 1)->r_offset
!= offset
+ 8)
7600 /* If someone messes with .opd alignment then after a
7601 "ld -r" we might have padding in the middle of .opd.
7602 Also, there's nothing to prevent someone putting
7603 something silly in .opd with the assembler. No .opd
7604 optimization for them! */
7606 (*_bfd_error_handler
)
7607 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7612 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7613 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7615 (*_bfd_error_handler
)
7616 (_("%B: unexpected reloc type %u in .opd section"),
7622 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7623 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7627 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7629 const char *sym_name
;
7631 sym_name
= h
->root
.root
.string
;
7633 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7636 (*_bfd_error_handler
)
7637 (_("%B: undefined sym `%s' in .opd section"),
7643 /* opd entries are always for functions defined in the
7644 current input bfd. If the symbol isn't defined in the
7645 input bfd, then we won't be using the function in this
7646 bfd; It must be defined in a linkonce section in another
7647 bfd, or is weak. It's also possible that we are
7648 discarding the function due to a linker script /DISCARD/,
7649 which we test for via the output_section. */
7650 if (sym_sec
->owner
!= ibfd
7651 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7656 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7658 if (sec
->size
== offset
+ 24)
7663 if (rel
== relend
&& sec
->size
== offset
+ 16)
7671 if (rel
->r_offset
== offset
+ 24)
7673 else if (rel
->r_offset
!= offset
+ 16)
7675 else if (rel
+ 1 < relend
7676 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7677 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7682 else if (rel
+ 2 < relend
7683 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7684 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7693 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7695 if (need_edit
|| add_aux_fields
)
7697 Elf_Internal_Rela
*write_rel
;
7698 Elf_Internal_Shdr
*rel_hdr
;
7699 bfd_byte
*rptr
, *wptr
;
7700 bfd_byte
*new_contents
;
7705 new_contents
= NULL
;
7706 amt
= sec
->size
* sizeof (long) / 8;
7707 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7708 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7709 if (opd
->adjust
== NULL
)
7711 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7713 /* This seems a waste of time as input .opd sections are all
7714 zeros as generated by gcc, but I suppose there's no reason
7715 this will always be so. We might start putting something in
7716 the third word of .opd entries. */
7717 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7720 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7725 if (local_syms
!= NULL
7726 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7728 if (elf_section_data (sec
)->relocs
!= relstart
)
7732 sec
->contents
= loc
;
7733 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7736 elf_section_data (sec
)->relocs
= relstart
;
7738 new_contents
= sec
->contents
;
7741 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7742 if (new_contents
== NULL
)
7746 wptr
= new_contents
;
7747 rptr
= sec
->contents
;
7749 write_rel
= relstart
;
7753 for (rel
= relstart
; rel
< relend
; rel
++)
7755 unsigned long r_symndx
;
7757 struct elf_link_hash_entry
*h
;
7758 Elf_Internal_Sym
*sym
;
7760 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7761 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7765 if (rel
->r_offset
== offset
)
7767 struct ppc_link_hash_entry
*fdh
= NULL
;
7769 /* See if the .opd entry is full 24 byte or
7770 16 byte (with fd_aux entry overlapped with next
7773 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7774 || (rel
+ 3 < relend
7775 && rel
[2].r_offset
== offset
+ 16
7776 && rel
[3].r_offset
== offset
+ 24
7777 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7778 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7782 && h
->root
.root
.string
[0] == '.')
7784 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
);
7786 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7787 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7791 skip
= (sym_sec
->owner
!= ibfd
7792 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7795 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7797 /* Arrange for the function descriptor sym
7799 fdh
->elf
.root
.u
.def
.value
= 0;
7800 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7802 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7806 /* We'll be keeping this opd entry. */
7810 /* Redefine the function descriptor symbol to
7811 this location in the opd section. It is
7812 necessary to update the value here rather
7813 than using an array of adjustments as we do
7814 for local symbols, because various places
7815 in the generic ELF code use the value
7816 stored in u.def.value. */
7817 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7818 fdh
->adjust_done
= 1;
7821 /* Local syms are a bit tricky. We could
7822 tweak them as they can be cached, but
7823 we'd need to look through the local syms
7824 for the function descriptor sym which we
7825 don't have at the moment. So keep an
7826 array of adjustments. */
7827 opd
->adjust
[rel
->r_offset
/ 8]
7828 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7831 memcpy (wptr
, rptr
, opd_ent_size
);
7832 wptr
+= opd_ent_size
;
7833 if (add_aux_fields
&& opd_ent_size
== 16)
7835 memset (wptr
, '\0', 8);
7839 rptr
+= opd_ent_size
;
7840 offset
+= opd_ent_size
;
7846 && !info
->relocatable
7847 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7853 /* We need to adjust any reloc offsets to point to the
7854 new opd entries. While we're at it, we may as well
7855 remove redundant relocs. */
7856 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7857 if (write_rel
!= rel
)
7858 memcpy (write_rel
, rel
, sizeof (*rel
));
7863 sec
->size
= wptr
- new_contents
;
7864 sec
->reloc_count
= write_rel
- relstart
;
7867 free (sec
->contents
);
7868 sec
->contents
= new_contents
;
7871 /* Fudge the header size too, as this is used later in
7872 elf_bfd_final_link if we are emitting relocs. */
7873 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7874 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7877 else if (elf_section_data (sec
)->relocs
!= relstart
)
7880 if (local_syms
!= NULL
7881 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7883 if (!info
->keep_memory
)
7886 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7891 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7893 /* If we are doing a final link and the last .opd entry is just 16 byte
7894 long, add a 8 byte padding after it. */
7895 if (need_pad
!= NULL
&& !info
->relocatable
)
7899 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7901 BFD_ASSERT (need_pad
->size
> 0);
7903 p
= bfd_malloc (need_pad
->size
+ 8);
7907 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7908 p
, 0, need_pad
->size
))
7911 need_pad
->contents
= p
;
7912 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7916 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7920 need_pad
->contents
= p
;
7923 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7924 need_pad
->size
+= 8;
7930 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7933 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
7935 struct ppc_link_hash_table
*htab
;
7937 htab
= ppc_hash_table (info
);
7941 if (abiversion (info
->output_bfd
) == 1)
7944 if (htab
->params
->no_multi_toc
)
7945 htab
->do_multi_toc
= 0;
7946 else if (!htab
->do_multi_toc
)
7947 htab
->params
->no_multi_toc
= 1;
7949 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7950 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7951 FALSE
, FALSE
, TRUE
));
7952 /* Move dynamic linking info to the function descriptor sym. */
7953 if (htab
->tls_get_addr
!= NULL
)
7954 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7955 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7956 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7957 FALSE
, FALSE
, TRUE
));
7958 if (!htab
->params
->no_tls_get_addr_opt
)
7960 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7962 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7963 FALSE
, FALSE
, TRUE
);
7965 func_desc_adjust (opt
, info
);
7966 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7967 FALSE
, FALSE
, TRUE
);
7969 && (opt_fd
->root
.type
== bfd_link_hash_defined
7970 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7972 /* If glibc supports an optimized __tls_get_addr call stub,
7973 signalled by the presence of __tls_get_addr_opt, and we'll
7974 be calling __tls_get_addr via a plt call stub, then
7975 make __tls_get_addr point to __tls_get_addr_opt. */
7976 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7977 if (htab
->elf
.dynamic_sections_created
7979 && (tga_fd
->type
== STT_FUNC
7980 || tga_fd
->needs_plt
)
7981 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7982 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7983 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7985 struct plt_entry
*ent
;
7987 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7988 if (ent
->plt
.refcount
> 0)
7992 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7993 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7994 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7995 if (opt_fd
->dynindx
!= -1)
7997 /* Use __tls_get_addr_opt in dynamic relocations. */
7998 opt_fd
->dynindx
= -1;
7999 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8000 opt_fd
->dynstr_index
);
8001 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8004 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8005 tga
= &htab
->tls_get_addr
->elf
;
8006 if (opt
!= NULL
&& tga
!= NULL
)
8008 tga
->root
.type
= bfd_link_hash_indirect
;
8009 tga
->root
.u
.i
.link
= &opt
->root
;
8010 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8011 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8013 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8015 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8016 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8017 if (htab
->tls_get_addr
!= NULL
)
8019 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8020 htab
->tls_get_addr
->is_func
= 1;
8026 htab
->params
->no_tls_get_addr_opt
= TRUE
;
8028 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8031 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8035 branch_reloc_hash_match (const bfd
*ibfd
,
8036 const Elf_Internal_Rela
*rel
,
8037 const struct ppc_link_hash_entry
*hash1
,
8038 const struct ppc_link_hash_entry
*hash2
)
8040 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8041 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8042 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8044 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8046 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8047 struct elf_link_hash_entry
*h
;
8049 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8050 h
= elf_follow_link (h
);
8051 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8057 /* Run through all the TLS relocs looking for optimization
8058 opportunities. The linker has been hacked (see ppc64elf.em) to do
8059 a preliminary section layout so that we know the TLS segment
8060 offsets. We can't optimize earlier because some optimizations need
8061 to know the tp offset, and we need to optimize before allocating
8062 dynamic relocations. */
8065 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8069 struct ppc_link_hash_table
*htab
;
8070 unsigned char *toc_ref
;
8073 if (info
->relocatable
|| !info
->executable
)
8076 htab
= ppc_hash_table (info
);
8080 /* Make two passes over the relocs. On the first pass, mark toc
8081 entries involved with tls relocs, and check that tls relocs
8082 involved in setting up a tls_get_addr call are indeed followed by
8083 such a call. If they are not, we can't do any tls optimization.
8084 On the second pass twiddle tls_mask flags to notify
8085 relocate_section that optimization can be done, and adjust got
8086 and plt refcounts. */
8088 for (pass
= 0; pass
< 2; ++pass
)
8089 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8091 Elf_Internal_Sym
*locsyms
= NULL
;
8092 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8094 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8095 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8097 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8098 bfd_boolean found_tls_get_addr_arg
= 0;
8100 /* Read the relocations. */
8101 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8103 if (relstart
== NULL
)
8109 relend
= relstart
+ sec
->reloc_count
;
8110 for (rel
= relstart
; rel
< relend
; rel
++)
8112 enum elf_ppc64_reloc_type r_type
;
8113 unsigned long r_symndx
;
8114 struct elf_link_hash_entry
*h
;
8115 Elf_Internal_Sym
*sym
;
8117 unsigned char *tls_mask
;
8118 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8120 bfd_boolean ok_tprel
, is_local
;
8121 long toc_ref_index
= 0;
8122 int expecting_tls_get_addr
= 0;
8123 bfd_boolean ret
= FALSE
;
8125 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8126 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8130 if (elf_section_data (sec
)->relocs
!= relstart
)
8132 if (toc_ref
!= NULL
)
8135 && (elf_symtab_hdr (ibfd
).contents
8136 != (unsigned char *) locsyms
))
8143 if (h
->root
.type
== bfd_link_hash_defined
8144 || h
->root
.type
== bfd_link_hash_defweak
)
8145 value
= h
->root
.u
.def
.value
;
8146 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8150 found_tls_get_addr_arg
= 0;
8155 /* Symbols referenced by TLS relocs must be of type
8156 STT_TLS. So no need for .opd local sym adjust. */
8157 value
= sym
->st_value
;
8166 && h
->root
.type
== bfd_link_hash_undefweak
)
8170 value
+= sym_sec
->output_offset
;
8171 value
+= sym_sec
->output_section
->vma
;
8172 value
-= htab
->elf
.tls_sec
->vma
;
8173 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8174 < (bfd_vma
) 1 << 32);
8178 r_type
= ELF64_R_TYPE (rel
->r_info
);
8179 /* If this section has old-style __tls_get_addr calls
8180 without marker relocs, then check that each
8181 __tls_get_addr call reloc is preceded by a reloc
8182 that conceivably belongs to the __tls_get_addr arg
8183 setup insn. If we don't find matching arg setup
8184 relocs, don't do any tls optimization. */
8186 && sec
->has_tls_get_addr_call
8188 && (h
== &htab
->tls_get_addr
->elf
8189 || h
== &htab
->tls_get_addr_fd
->elf
)
8190 && !found_tls_get_addr_arg
8191 && is_branch_reloc (r_type
))
8193 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8194 "TLS optimization disabled\n"),
8195 ibfd
, sec
, rel
->r_offset
);
8200 found_tls_get_addr_arg
= 0;
8203 case R_PPC64_GOT_TLSLD16
:
8204 case R_PPC64_GOT_TLSLD16_LO
:
8205 expecting_tls_get_addr
= 1;
8206 found_tls_get_addr_arg
= 1;
8209 case R_PPC64_GOT_TLSLD16_HI
:
8210 case R_PPC64_GOT_TLSLD16_HA
:
8211 /* These relocs should never be against a symbol
8212 defined in a shared lib. Leave them alone if
8213 that turns out to be the case. */
8220 tls_type
= TLS_TLS
| TLS_LD
;
8223 case R_PPC64_GOT_TLSGD16
:
8224 case R_PPC64_GOT_TLSGD16_LO
:
8225 expecting_tls_get_addr
= 1;
8226 found_tls_get_addr_arg
= 1;
8229 case R_PPC64_GOT_TLSGD16_HI
:
8230 case R_PPC64_GOT_TLSGD16_HA
:
8236 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8238 tls_type
= TLS_TLS
| TLS_GD
;
8241 case R_PPC64_GOT_TPREL16_DS
:
8242 case R_PPC64_GOT_TPREL16_LO_DS
:
8243 case R_PPC64_GOT_TPREL16_HI
:
8244 case R_PPC64_GOT_TPREL16_HA
:
8249 tls_clear
= TLS_TPREL
;
8250 tls_type
= TLS_TLS
| TLS_TPREL
;
8257 found_tls_get_addr_arg
= 1;
8262 case R_PPC64_TOC16_LO
:
8263 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8266 /* Mark this toc entry as referenced by a TLS
8267 code sequence. We can do that now in the
8268 case of R_PPC64_TLS, and after checking for
8269 tls_get_addr for the TOC16 relocs. */
8270 if (toc_ref
== NULL
)
8271 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8272 if (toc_ref
== NULL
)
8276 value
= h
->root
.u
.def
.value
;
8278 value
= sym
->st_value
;
8279 value
+= rel
->r_addend
;
8280 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
8281 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8282 if (r_type
== R_PPC64_TLS
8283 || r_type
== R_PPC64_TLSGD
8284 || r_type
== R_PPC64_TLSLD
)
8286 toc_ref
[toc_ref_index
] = 1;
8290 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8295 expecting_tls_get_addr
= 2;
8298 case R_PPC64_TPREL64
:
8302 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8307 tls_set
= TLS_EXPLICIT
;
8308 tls_clear
= TLS_TPREL
;
8313 case R_PPC64_DTPMOD64
:
8317 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8319 if (rel
+ 1 < relend
8321 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8322 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8326 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8329 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8338 tls_set
= TLS_EXPLICIT
;
8349 if (!expecting_tls_get_addr
8350 || !sec
->has_tls_get_addr_call
)
8353 if (rel
+ 1 < relend
8354 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8356 htab
->tls_get_addr_fd
))
8358 if (expecting_tls_get_addr
== 2)
8360 /* Check for toc tls entries. */
8361 unsigned char *toc_tls
;
8364 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8369 if (toc_tls
!= NULL
)
8371 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8372 found_tls_get_addr_arg
= 1;
8374 toc_ref
[toc_ref_index
] = 1;
8380 if (expecting_tls_get_addr
!= 1)
8383 /* Uh oh, we didn't find the expected call. We
8384 could just mark this symbol to exclude it
8385 from tls optimization but it's safer to skip
8386 the entire optimization. */
8387 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8388 "TLS optimization disabled\n"),
8389 ibfd
, sec
, rel
->r_offset
);
8394 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8396 struct plt_entry
*ent
;
8397 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8400 if (ent
->addend
== 0)
8402 if (ent
->plt
.refcount
> 0)
8404 ent
->plt
.refcount
-= 1;
8405 expecting_tls_get_addr
= 0;
8411 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8413 struct plt_entry
*ent
;
8414 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8417 if (ent
->addend
== 0)
8419 if (ent
->plt
.refcount
> 0)
8420 ent
->plt
.refcount
-= 1;
8428 if ((tls_set
& TLS_EXPLICIT
) == 0)
8430 struct got_entry
*ent
;
8432 /* Adjust got entry for this reloc. */
8436 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8438 for (; ent
!= NULL
; ent
= ent
->next
)
8439 if (ent
->addend
== rel
->r_addend
8440 && ent
->owner
== ibfd
8441 && ent
->tls_type
== tls_type
)
8448 /* We managed to get rid of a got entry. */
8449 if (ent
->got
.refcount
> 0)
8450 ent
->got
.refcount
-= 1;
8455 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8456 we'll lose one or two dyn relocs. */
8457 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8461 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8463 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8469 *tls_mask
|= tls_set
;
8470 *tls_mask
&= ~tls_clear
;
8473 if (elf_section_data (sec
)->relocs
!= relstart
)
8478 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8480 if (!info
->keep_memory
)
8483 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8487 if (toc_ref
!= NULL
)
8492 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8493 the values of any global symbols in a toc section that has been
8494 edited. Globals in toc sections should be a rarity, so this function
8495 sets a flag if any are found in toc sections other than the one just
8496 edited, so that futher hash table traversals can be avoided. */
8498 struct adjust_toc_info
8501 unsigned long *skip
;
8502 bfd_boolean global_toc_syms
;
8505 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8508 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8510 struct ppc_link_hash_entry
*eh
;
8511 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8514 if (h
->root
.type
!= bfd_link_hash_defined
8515 && h
->root
.type
!= bfd_link_hash_defweak
)
8518 eh
= (struct ppc_link_hash_entry
*) h
;
8519 if (eh
->adjust_done
)
8522 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8524 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8525 i
= toc_inf
->toc
->rawsize
>> 3;
8527 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8529 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8531 (*_bfd_error_handler
)
8532 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8535 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8536 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8539 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8540 eh
->adjust_done
= 1;
8542 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8543 toc_inf
->global_toc_syms
= TRUE
;
8548 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8551 ok_lo_toc_insn (unsigned int insn
)
8553 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8554 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8555 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8556 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8557 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8558 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8559 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8560 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8561 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8562 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8563 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8564 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8565 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8566 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8567 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8569 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8570 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8571 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8574 /* Examine all relocs referencing .toc sections in order to remove
8575 unused .toc entries. */
8578 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8581 struct adjust_toc_info toc_inf
;
8582 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8584 htab
->do_toc_opt
= 1;
8585 toc_inf
.global_toc_syms
= TRUE
;
8586 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8588 asection
*toc
, *sec
;
8589 Elf_Internal_Shdr
*symtab_hdr
;
8590 Elf_Internal_Sym
*local_syms
;
8591 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8592 unsigned long *skip
, *drop
;
8593 unsigned char *used
;
8594 unsigned char *keep
, last
, some_unused
;
8596 if (!is_ppc64_elf (ibfd
))
8599 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8602 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8603 || discarded_section (toc
))
8608 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8610 /* Look at sections dropped from the final link. */
8613 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8615 if (sec
->reloc_count
== 0
8616 || !discarded_section (sec
)
8617 || get_opd_info (sec
)
8618 || (sec
->flags
& SEC_ALLOC
) == 0
8619 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8622 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8623 if (relstart
== NULL
)
8626 /* Run through the relocs to see which toc entries might be
8628 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8630 enum elf_ppc64_reloc_type r_type
;
8631 unsigned long r_symndx
;
8633 struct elf_link_hash_entry
*h
;
8634 Elf_Internal_Sym
*sym
;
8637 r_type
= ELF64_R_TYPE (rel
->r_info
);
8644 case R_PPC64_TOC16_LO
:
8645 case R_PPC64_TOC16_HI
:
8646 case R_PPC64_TOC16_HA
:
8647 case R_PPC64_TOC16_DS
:
8648 case R_PPC64_TOC16_LO_DS
:
8652 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8653 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8661 val
= h
->root
.u
.def
.value
;
8663 val
= sym
->st_value
;
8664 val
+= rel
->r_addend
;
8666 if (val
>= toc
->size
)
8669 /* Anything in the toc ought to be aligned to 8 bytes.
8670 If not, don't mark as unused. */
8676 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8681 skip
[val
>> 3] = ref_from_discarded
;
8684 if (elf_section_data (sec
)->relocs
!= relstart
)
8688 /* For largetoc loads of address constants, we can convert
8689 . addis rx,2,addr@got@ha
8690 . ld ry,addr@got@l(rx)
8692 . addis rx,2,addr@toc@ha
8693 . addi ry,rx,addr@toc@l
8694 when addr is within 2G of the toc pointer. This then means
8695 that the word storing "addr" in the toc is no longer needed. */
8697 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8698 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8699 && toc
->reloc_count
!= 0)
8701 /* Read toc relocs. */
8702 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8704 if (toc_relocs
== NULL
)
8707 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8709 enum elf_ppc64_reloc_type r_type
;
8710 unsigned long r_symndx
;
8712 struct elf_link_hash_entry
*h
;
8713 Elf_Internal_Sym
*sym
;
8716 r_type
= ELF64_R_TYPE (rel
->r_info
);
8717 if (r_type
!= R_PPC64_ADDR64
)
8720 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8721 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8726 || discarded_section (sym_sec
))
8729 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8734 if (h
->type
== STT_GNU_IFUNC
)
8736 val
= h
->root
.u
.def
.value
;
8740 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8742 val
= sym
->st_value
;
8744 val
+= rel
->r_addend
;
8745 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8747 /* We don't yet know the exact toc pointer value, but we
8748 know it will be somewhere in the toc section. Don't
8749 optimize if the difference from any possible toc
8750 pointer is outside [ff..f80008000, 7fff7fff]. */
8751 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8752 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8755 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8756 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8761 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8766 skip
[rel
->r_offset
>> 3]
8767 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8774 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8778 if (local_syms
!= NULL
8779 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8783 && elf_section_data (sec
)->relocs
!= relstart
)
8785 if (toc_relocs
!= NULL
8786 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8793 /* Now check all kept sections that might reference the toc.
8794 Check the toc itself last. */
8795 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8798 sec
= (sec
== toc
? NULL
8799 : sec
->next
== NULL
? toc
8800 : sec
->next
== toc
&& toc
->next
? toc
->next
8805 if (sec
->reloc_count
== 0
8806 || discarded_section (sec
)
8807 || get_opd_info (sec
)
8808 || (sec
->flags
& SEC_ALLOC
) == 0
8809 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8812 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8814 if (relstart
== NULL
)
8820 /* Mark toc entries referenced as used. */
8824 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8826 enum elf_ppc64_reloc_type r_type
;
8827 unsigned long r_symndx
;
8829 struct elf_link_hash_entry
*h
;
8830 Elf_Internal_Sym
*sym
;
8832 enum {no_check
, check_lo
, check_ha
} insn_check
;
8834 r_type
= ELF64_R_TYPE (rel
->r_info
);
8838 insn_check
= no_check
;
8841 case R_PPC64_GOT_TLSLD16_HA
:
8842 case R_PPC64_GOT_TLSGD16_HA
:
8843 case R_PPC64_GOT_TPREL16_HA
:
8844 case R_PPC64_GOT_DTPREL16_HA
:
8845 case R_PPC64_GOT16_HA
:
8846 case R_PPC64_TOC16_HA
:
8847 insn_check
= check_ha
;
8850 case R_PPC64_GOT_TLSLD16_LO
:
8851 case R_PPC64_GOT_TLSGD16_LO
:
8852 case R_PPC64_GOT_TPREL16_LO_DS
:
8853 case R_PPC64_GOT_DTPREL16_LO_DS
:
8854 case R_PPC64_GOT16_LO
:
8855 case R_PPC64_GOT16_LO_DS
:
8856 case R_PPC64_TOC16_LO
:
8857 case R_PPC64_TOC16_LO_DS
:
8858 insn_check
= check_lo
;
8862 if (insn_check
!= no_check
)
8864 bfd_vma off
= rel
->r_offset
& ~3;
8865 unsigned char buf
[4];
8868 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
8873 insn
= bfd_get_32 (ibfd
, buf
);
8874 if (insn_check
== check_lo
8875 ? !ok_lo_toc_insn (insn
)
8876 : ((insn
& ((0x3f << 26) | 0x1f << 16))
8877 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8881 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
8882 sprintf (str
, "%#08x", insn
);
8883 info
->callbacks
->einfo
8884 (_("%P: %H: toc optimization is not supported for"
8885 " %s instruction.\n"),
8886 ibfd
, sec
, rel
->r_offset
& ~3, str
);
8893 case R_PPC64_TOC16_LO
:
8894 case R_PPC64_TOC16_HI
:
8895 case R_PPC64_TOC16_HA
:
8896 case R_PPC64_TOC16_DS
:
8897 case R_PPC64_TOC16_LO_DS
:
8898 /* In case we're taking addresses of toc entries. */
8899 case R_PPC64_ADDR64
:
8906 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8907 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8918 val
= h
->root
.u
.def
.value
;
8920 val
= sym
->st_value
;
8921 val
+= rel
->r_addend
;
8923 if (val
>= toc
->size
)
8926 if ((skip
[val
>> 3] & can_optimize
) != 0)
8933 case R_PPC64_TOC16_HA
:
8936 case R_PPC64_TOC16_LO_DS
:
8937 off
= rel
->r_offset
;
8938 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
8939 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
8945 if ((opc
& (0x3f << 2)) == (58u << 2))
8950 /* Wrong sort of reloc, or not a ld. We may
8951 as well clear ref_from_discarded too. */
8958 /* For the toc section, we only mark as used if this
8959 entry itself isn't unused. */
8960 else if ((used
[rel
->r_offset
>> 3]
8961 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
8964 /* Do all the relocs again, to catch reference
8973 if (elf_section_data (sec
)->relocs
!= relstart
)
8977 /* Merge the used and skip arrays. Assume that TOC
8978 doublewords not appearing as either used or unused belong
8979 to to an entry more than one doubleword in size. */
8980 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8981 drop
< skip
+ (toc
->size
+ 7) / 8;
8986 *drop
&= ~ref_from_discarded
;
8987 if ((*drop
& can_optimize
) != 0)
8991 else if ((*drop
& ref_from_discarded
) != 0)
8994 last
= ref_from_discarded
;
9004 bfd_byte
*contents
, *src
;
9006 Elf_Internal_Sym
*sym
;
9007 bfd_boolean local_toc_syms
= FALSE
;
9009 /* Shuffle the toc contents, and at the same time convert the
9010 skip array from booleans into offsets. */
9011 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9014 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9016 for (src
= contents
, off
= 0, drop
= skip
;
9017 src
< contents
+ toc
->size
;
9020 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9025 memcpy (src
- off
, src
, 8);
9029 toc
->rawsize
= toc
->size
;
9030 toc
->size
= src
- contents
- off
;
9032 /* Adjust addends for relocs against the toc section sym,
9033 and optimize any accesses we can. */
9034 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9036 if (sec
->reloc_count
== 0
9037 || discarded_section (sec
))
9040 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9042 if (relstart
== NULL
)
9045 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9047 enum elf_ppc64_reloc_type r_type
;
9048 unsigned long r_symndx
;
9050 struct elf_link_hash_entry
*h
;
9053 r_type
= ELF64_R_TYPE (rel
->r_info
);
9060 case R_PPC64_TOC16_LO
:
9061 case R_PPC64_TOC16_HI
:
9062 case R_PPC64_TOC16_HA
:
9063 case R_PPC64_TOC16_DS
:
9064 case R_PPC64_TOC16_LO_DS
:
9065 case R_PPC64_ADDR64
:
9069 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9070 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9078 val
= h
->root
.u
.def
.value
;
9081 val
= sym
->st_value
;
9083 local_toc_syms
= TRUE
;
9086 val
+= rel
->r_addend
;
9088 if (val
> toc
->rawsize
)
9090 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9092 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9094 Elf_Internal_Rela
*tocrel
9095 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9096 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9100 case R_PPC64_TOC16_HA
:
9101 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9104 case R_PPC64_TOC16_LO_DS
:
9105 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9109 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9111 info
->callbacks
->einfo
9112 (_("%P: %H: %s references "
9113 "optimized away TOC entry\n"),
9114 ibfd
, sec
, rel
->r_offset
,
9115 ppc64_elf_howto_table
[r_type
]->name
);
9116 bfd_set_error (bfd_error_bad_value
);
9119 rel
->r_addend
= tocrel
->r_addend
;
9120 elf_section_data (sec
)->relocs
= relstart
;
9124 if (h
!= NULL
|| sym
->st_value
!= 0)
9127 rel
->r_addend
-= skip
[val
>> 3];
9128 elf_section_data (sec
)->relocs
= relstart
;
9131 if (elf_section_data (sec
)->relocs
!= relstart
)
9135 /* We shouldn't have local or global symbols defined in the TOC,
9136 but handle them anyway. */
9137 if (local_syms
!= NULL
)
9138 for (sym
= local_syms
;
9139 sym
< local_syms
+ symtab_hdr
->sh_info
;
9141 if (sym
->st_value
!= 0
9142 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9146 if (sym
->st_value
> toc
->rawsize
)
9147 i
= toc
->rawsize
>> 3;
9149 i
= sym
->st_value
>> 3;
9151 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9154 (*_bfd_error_handler
)
9155 (_("%s defined on removed toc entry"),
9156 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9159 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9160 sym
->st_value
= (bfd_vma
) i
<< 3;
9163 sym
->st_value
-= skip
[i
];
9164 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9167 /* Adjust any global syms defined in this toc input section. */
9168 if (toc_inf
.global_toc_syms
)
9171 toc_inf
.skip
= skip
;
9172 toc_inf
.global_toc_syms
= FALSE
;
9173 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9177 if (toc
->reloc_count
!= 0)
9179 Elf_Internal_Shdr
*rel_hdr
;
9180 Elf_Internal_Rela
*wrel
;
9183 /* Remove unused toc relocs, and adjust those we keep. */
9184 if (toc_relocs
== NULL
)
9185 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9187 if (toc_relocs
== NULL
)
9191 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9192 if ((skip
[rel
->r_offset
>> 3]
9193 & (ref_from_discarded
| can_optimize
)) == 0)
9195 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9196 wrel
->r_info
= rel
->r_info
;
9197 wrel
->r_addend
= rel
->r_addend
;
9200 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9201 &local_syms
, NULL
, NULL
))
9204 elf_section_data (toc
)->relocs
= toc_relocs
;
9205 toc
->reloc_count
= wrel
- toc_relocs
;
9206 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9207 sz
= rel_hdr
->sh_entsize
;
9208 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9211 else if (toc_relocs
!= NULL
9212 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9215 if (local_syms
!= NULL
9216 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9218 if (!info
->keep_memory
)
9221 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9229 /* Return true iff input section I references the TOC using
9230 instructions limited to +/-32k offsets. */
9233 ppc64_elf_has_small_toc_reloc (asection
*i
)
9235 return (is_ppc64_elf (i
->owner
)
9236 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9239 /* Allocate space for one GOT entry. */
9242 allocate_got (struct elf_link_hash_entry
*h
,
9243 struct bfd_link_info
*info
,
9244 struct got_entry
*gent
)
9246 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9248 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9249 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9251 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9252 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9253 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9255 gent
->got
.offset
= got
->size
;
9256 got
->size
+= entsize
;
9258 dyn
= htab
->elf
.dynamic_sections_created
;
9259 if (h
->type
== STT_GNU_IFUNC
)
9261 htab
->elf
.irelplt
->size
+= rentsize
;
9262 htab
->got_reli_size
+= rentsize
;
9264 else if ((info
->shared
9265 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9266 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9267 || h
->root
.type
!= bfd_link_hash_undefweak
))
9269 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9270 relgot
->size
+= rentsize
;
9274 /* This function merges got entries in the same toc group. */
9277 merge_got_entries (struct got_entry
**pent
)
9279 struct got_entry
*ent
, *ent2
;
9281 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9282 if (!ent
->is_indirect
)
9283 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9284 if (!ent2
->is_indirect
9285 && ent2
->addend
== ent
->addend
9286 && ent2
->tls_type
== ent
->tls_type
9287 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9289 ent2
->is_indirect
= TRUE
;
9290 ent2
->got
.ent
= ent
;
9294 /* Allocate space in .plt, .got and associated reloc sections for
9298 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9300 struct bfd_link_info
*info
;
9301 struct ppc_link_hash_table
*htab
;
9303 struct ppc_link_hash_entry
*eh
;
9304 struct elf_dyn_relocs
*p
;
9305 struct got_entry
**pgent
, *gent
;
9307 if (h
->root
.type
== bfd_link_hash_indirect
)
9310 info
= (struct bfd_link_info
*) inf
;
9311 htab
= ppc_hash_table (info
);
9315 if ((htab
->elf
.dynamic_sections_created
9317 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
9318 || h
->type
== STT_GNU_IFUNC
)
9320 struct plt_entry
*pent
;
9321 bfd_boolean doneone
= FALSE
;
9322 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9323 if (pent
->plt
.refcount
> 0)
9325 if (!htab
->elf
.dynamic_sections_created
9326 || h
->dynindx
== -1)
9329 pent
->plt
.offset
= s
->size
;
9330 s
->size
+= PLT_ENTRY_SIZE (htab
);
9331 s
= htab
->elf
.irelplt
;
9335 /* If this is the first .plt entry, make room for the special
9339 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9341 pent
->plt
.offset
= s
->size
;
9343 /* Make room for this entry. */
9344 s
->size
+= PLT_ENTRY_SIZE (htab
);
9346 /* Make room for the .glink code. */
9349 s
->size
+= GLINK_CALL_STUB_SIZE
;
9352 /* We need bigger stubs past index 32767. */
9353 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9360 /* We also need to make an entry in the .rela.plt section. */
9361 s
= htab
->elf
.srelplt
;
9363 s
->size
+= sizeof (Elf64_External_Rela
);
9367 pent
->plt
.offset
= (bfd_vma
) -1;
9370 h
->plt
.plist
= NULL
;
9376 h
->plt
.plist
= NULL
;
9380 eh
= (struct ppc_link_hash_entry
*) h
;
9381 /* Run through the TLS GD got entries first if we're changing them
9383 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9384 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9385 if (gent
->got
.refcount
> 0
9386 && (gent
->tls_type
& TLS_GD
) != 0)
9388 /* This was a GD entry that has been converted to TPREL. If
9389 there happens to be a TPREL entry we can use that one. */
9390 struct got_entry
*ent
;
9391 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9392 if (ent
->got
.refcount
> 0
9393 && (ent
->tls_type
& TLS_TPREL
) != 0
9394 && ent
->addend
== gent
->addend
9395 && ent
->owner
== gent
->owner
)
9397 gent
->got
.refcount
= 0;
9401 /* If not, then we'll be using our own TPREL entry. */
9402 if (gent
->got
.refcount
!= 0)
9403 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9406 /* Remove any list entry that won't generate a word in the GOT before
9407 we call merge_got_entries. Otherwise we risk merging to empty
9409 pgent
= &h
->got
.glist
;
9410 while ((gent
= *pgent
) != NULL
)
9411 if (gent
->got
.refcount
> 0)
9413 if ((gent
->tls_type
& TLS_LD
) != 0
9416 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9417 *pgent
= gent
->next
;
9420 pgent
= &gent
->next
;
9423 *pgent
= gent
->next
;
9425 if (!htab
->do_multi_toc
)
9426 merge_got_entries (&h
->got
.glist
);
9428 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9429 if (!gent
->is_indirect
)
9431 /* Make sure this symbol is output as a dynamic symbol.
9432 Undefined weak syms won't yet be marked as dynamic,
9433 nor will all TLS symbols. */
9434 if (h
->dynindx
== -1
9436 && h
->type
!= STT_GNU_IFUNC
9437 && htab
->elf
.dynamic_sections_created
)
9439 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9443 if (!is_ppc64_elf (gent
->owner
))
9446 allocate_got (h
, info
, gent
);
9449 if (eh
->dyn_relocs
== NULL
9450 || (!htab
->elf
.dynamic_sections_created
9451 && h
->type
!= STT_GNU_IFUNC
))
9454 /* In the shared -Bsymbolic case, discard space allocated for
9455 dynamic pc-relative relocs against symbols which turn out to be
9456 defined in regular objects. For the normal shared case, discard
9457 space for relocs that have become local due to symbol visibility
9462 /* Relocs that use pc_count are those that appear on a call insn,
9463 or certain REL relocs (see must_be_dyn_reloc) that can be
9464 generated via assembly. We want calls to protected symbols to
9465 resolve directly to the function rather than going via the plt.
9466 If people want function pointer comparisons to work as expected
9467 then they should avoid writing weird assembly. */
9468 if (SYMBOL_CALLS_LOCAL (info
, h
))
9470 struct elf_dyn_relocs
**pp
;
9472 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9474 p
->count
-= p
->pc_count
;
9483 /* Also discard relocs on undefined weak syms with non-default
9485 if (eh
->dyn_relocs
!= NULL
9486 && h
->root
.type
== bfd_link_hash_undefweak
)
9488 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9489 eh
->dyn_relocs
= NULL
;
9491 /* Make sure this symbol is output as a dynamic symbol.
9492 Undefined weak syms won't yet be marked as dynamic. */
9493 else if (h
->dynindx
== -1
9494 && !h
->forced_local
)
9496 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9501 else if (h
->type
== STT_GNU_IFUNC
)
9503 if (!h
->non_got_ref
)
9504 eh
->dyn_relocs
= NULL
;
9506 else if (ELIMINATE_COPY_RELOCS
)
9508 /* For the non-shared case, discard space for relocs against
9509 symbols which turn out to need copy relocs or are not
9515 /* Make sure this symbol is output as a dynamic symbol.
9516 Undefined weak syms won't yet be marked as dynamic. */
9517 if (h
->dynindx
== -1
9518 && !h
->forced_local
)
9520 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9524 /* If that succeeded, we know we'll be keeping all the
9526 if (h
->dynindx
!= -1)
9530 eh
->dyn_relocs
= NULL
;
9535 /* Finally, allocate space. */
9536 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9538 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9539 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9540 sreloc
= htab
->elf
.irelplt
;
9541 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9547 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9548 to set up space for global entry stubs. These are put in glink,
9549 after the branch table. */
9552 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9554 struct bfd_link_info
*info
;
9555 struct ppc_link_hash_table
*htab
;
9556 struct plt_entry
*pent
;
9559 if (h
->root
.type
== bfd_link_hash_indirect
)
9562 if (!h
->pointer_equality_needed
)
9569 htab
= ppc_hash_table (info
);
9574 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9575 if (pent
->plt
.offset
!= (bfd_vma
) -1
9576 && pent
->addend
== 0)
9578 /* For ELFv2, if this symbol is not defined in a regular file
9579 and we are not generating a shared library or pie, then we
9580 need to define the symbol in the executable on a call stub.
9581 This is to avoid text relocations. */
9582 s
->size
= (s
->size
+ 15) & -16;
9583 h
->root
.u
.def
.section
= s
;
9584 h
->root
.u
.def
.value
= s
->size
;
9591 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9592 read-only sections. */
9595 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9597 if (h
->root
.type
== bfd_link_hash_indirect
)
9600 if (readonly_dynrelocs (h
))
9602 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9604 /* Not an error, just cut short the traversal. */
9610 /* Set the sizes of the dynamic sections. */
9613 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9614 struct bfd_link_info
*info
)
9616 struct ppc_link_hash_table
*htab
;
9621 struct got_entry
*first_tlsld
;
9623 htab
= ppc_hash_table (info
);
9627 dynobj
= htab
->elf
.dynobj
;
9631 if (htab
->elf
.dynamic_sections_created
)
9633 /* Set the contents of the .interp section to the interpreter. */
9634 if (info
->executable
)
9636 s
= bfd_get_linker_section (dynobj
, ".interp");
9639 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9640 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9644 /* Set up .got offsets for local syms, and space for local dynamic
9646 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9648 struct got_entry
**lgot_ents
;
9649 struct got_entry
**end_lgot_ents
;
9650 struct plt_entry
**local_plt
;
9651 struct plt_entry
**end_local_plt
;
9652 unsigned char *lgot_masks
;
9653 bfd_size_type locsymcount
;
9654 Elf_Internal_Shdr
*symtab_hdr
;
9656 if (!is_ppc64_elf (ibfd
))
9659 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9661 struct ppc_dyn_relocs
*p
;
9663 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9665 if (!bfd_is_abs_section (p
->sec
)
9666 && bfd_is_abs_section (p
->sec
->output_section
))
9668 /* Input section has been discarded, either because
9669 it is a copy of a linkonce section or due to
9670 linker script /DISCARD/, so we'll be discarding
9673 else if (p
->count
!= 0)
9675 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
9677 srel
= htab
->elf
.irelplt
;
9678 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9679 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9680 info
->flags
|= DF_TEXTREL
;
9685 lgot_ents
= elf_local_got_ents (ibfd
);
9689 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9690 locsymcount
= symtab_hdr
->sh_info
;
9691 end_lgot_ents
= lgot_ents
+ locsymcount
;
9692 local_plt
= (struct plt_entry
**) end_lgot_ents
;
9693 end_local_plt
= local_plt
+ locsymcount
;
9694 lgot_masks
= (unsigned char *) end_local_plt
;
9695 s
= ppc64_elf_tdata (ibfd
)->got
;
9696 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
9698 struct got_entry
**pent
, *ent
;
9701 while ((ent
= *pent
) != NULL
)
9702 if (ent
->got
.refcount
> 0)
9704 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
9706 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
9711 unsigned int ent_size
= 8;
9712 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
9714 ent
->got
.offset
= s
->size
;
9715 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
9720 s
->size
+= ent_size
;
9721 if ((*lgot_masks
& PLT_IFUNC
) != 0)
9723 htab
->elf
.irelplt
->size
+= rel_size
;
9724 htab
->got_reli_size
+= rel_size
;
9726 else if (info
->shared
)
9728 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9729 srel
->size
+= rel_size
;
9738 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9739 for (; local_plt
< end_local_plt
; ++local_plt
)
9741 struct plt_entry
*ent
;
9743 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9744 if (ent
->plt
.refcount
> 0)
9747 ent
->plt
.offset
= s
->size
;
9748 s
->size
+= PLT_ENTRY_SIZE (htab
);
9750 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
9753 ent
->plt
.offset
= (bfd_vma
) -1;
9757 /* Allocate global sym .plt and .got entries, and space for global
9758 sym dynamic relocs. */
9759 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9760 /* Stash the end of glink branch table. */
9761 if (htab
->glink
!= NULL
)
9762 htab
->glink
->rawsize
= htab
->glink
->size
;
9764 if (!htab
->opd_abi
&& !info
->shared
)
9765 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
9768 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9770 struct got_entry
*ent
;
9772 if (!is_ppc64_elf (ibfd
))
9775 ent
= ppc64_tlsld_got (ibfd
);
9776 if (ent
->got
.refcount
> 0)
9778 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9780 ent
->is_indirect
= TRUE
;
9781 ent
->got
.ent
= first_tlsld
;
9785 if (first_tlsld
== NULL
)
9787 s
= ppc64_elf_tdata (ibfd
)->got
;
9788 ent
->got
.offset
= s
->size
;
9793 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9794 srel
->size
+= sizeof (Elf64_External_Rela
);
9799 ent
->got
.offset
= (bfd_vma
) -1;
9802 /* We now have determined the sizes of the various dynamic sections.
9803 Allocate memory for them. */
9805 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9807 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9810 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9811 /* These haven't been allocated yet; don't strip. */
9813 else if (s
== htab
->elf
.sgot
9814 || s
== htab
->elf
.splt
9815 || s
== htab
->elf
.iplt
9817 || s
== htab
->dynbss
)
9819 /* Strip this section if we don't need it; see the
9822 else if (s
== htab
->glink_eh_frame
)
9824 if (!bfd_is_abs_section (s
->output_section
))
9825 /* Not sized yet. */
9828 else if (CONST_STRNEQ (s
->name
, ".rela"))
9832 if (s
!= htab
->elf
.srelplt
)
9835 /* We use the reloc_count field as a counter if we need
9836 to copy relocs into the output file. */
9842 /* It's not one of our sections, so don't allocate space. */
9848 /* If we don't need this section, strip it from the
9849 output file. This is mostly to handle .rela.bss and
9850 .rela.plt. We must create both sections in
9851 create_dynamic_sections, because they must be created
9852 before the linker maps input sections to output
9853 sections. The linker does that before
9854 adjust_dynamic_symbol is called, and it is that
9855 function which decides whether anything needs to go
9856 into these sections. */
9857 s
->flags
|= SEC_EXCLUDE
;
9861 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9864 /* Allocate memory for the section contents. We use bfd_zalloc
9865 here in case unused entries are not reclaimed before the
9866 section's contents are written out. This should not happen,
9867 but this way if it does we get a R_PPC64_NONE reloc in .rela
9868 sections instead of garbage.
9869 We also rely on the section contents being zero when writing
9871 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9872 if (s
->contents
== NULL
)
9876 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9878 if (!is_ppc64_elf (ibfd
))
9881 s
= ppc64_elf_tdata (ibfd
)->got
;
9882 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
9885 s
->flags
|= SEC_EXCLUDE
;
9888 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9889 if (s
->contents
== NULL
)
9893 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9897 s
->flags
|= SEC_EXCLUDE
;
9900 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9901 if (s
->contents
== NULL
)
9909 if (htab
->elf
.dynamic_sections_created
)
9911 bfd_boolean tls_opt
;
9913 /* Add some entries to the .dynamic section. We fill in the
9914 values later, in ppc64_elf_finish_dynamic_sections, but we
9915 must add the entries now so that we get the correct size for
9916 the .dynamic section. The DT_DEBUG entry is filled in by the
9917 dynamic linker and used by the debugger. */
9918 #define add_dynamic_entry(TAG, VAL) \
9919 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9921 if (info
->executable
)
9923 if (!add_dynamic_entry (DT_DEBUG
, 0))
9927 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
9929 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9930 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9931 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9932 || !add_dynamic_entry (DT_JMPREL
, 0)
9933 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9937 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
9939 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9940 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9944 tls_opt
= (!htab
->params
->no_tls_get_addr_opt
9945 && htab
->tls_get_addr_fd
!= NULL
9946 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
9947 if (tls_opt
|| !htab
->opd_abi
)
9949 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
9955 if (!add_dynamic_entry (DT_RELA
, 0)
9956 || !add_dynamic_entry (DT_RELASZ
, 0)
9957 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9960 /* If any dynamic relocs apply to a read-only section,
9961 then we need a DT_TEXTREL entry. */
9962 if ((info
->flags
& DF_TEXTREL
) == 0)
9963 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
9965 if ((info
->flags
& DF_TEXTREL
) != 0)
9967 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9972 #undef add_dynamic_entry
9977 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
9980 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
9982 if (h
->plt
.plist
!= NULL
9984 && !h
->pointer_equality_needed
)
9987 return _bfd_elf_hash_symbol (h
);
9990 /* Determine the type of stub needed, if any, for a call. */
9992 static inline enum ppc_stub_type
9993 ppc_type_of_stub (asection
*input_sec
,
9994 const Elf_Internal_Rela
*rel
,
9995 struct ppc_link_hash_entry
**hash
,
9996 struct plt_entry
**plt_ent
,
9997 bfd_vma destination
,
9998 unsigned long local_off
)
10000 struct ppc_link_hash_entry
*h
= *hash
;
10002 bfd_vma branch_offset
;
10003 bfd_vma max_branch_offset
;
10004 enum elf_ppc64_reloc_type r_type
;
10008 struct plt_entry
*ent
;
10009 struct ppc_link_hash_entry
*fdh
= h
;
10011 && h
->oh
->is_func_descriptor
)
10013 fdh
= ppc_follow_link (h
->oh
);
10017 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10018 if (ent
->addend
== rel
->r_addend
10019 && ent
->plt
.offset
!= (bfd_vma
) -1)
10022 return ppc_stub_plt_call
;
10025 /* Here, we know we don't have a plt entry. If we don't have a
10026 either a defined function descriptor or a defined entry symbol
10027 in a regular object file, then it is pointless trying to make
10028 any other type of stub. */
10029 if (!is_static_defined (&fdh
->elf
)
10030 && !is_static_defined (&h
->elf
))
10031 return ppc_stub_none
;
10033 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10035 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10036 struct plt_entry
**local_plt
= (struct plt_entry
**)
10037 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10038 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10040 if (local_plt
[r_symndx
] != NULL
)
10042 struct plt_entry
*ent
;
10044 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10045 if (ent
->addend
== rel
->r_addend
10046 && ent
->plt
.offset
!= (bfd_vma
) -1)
10049 return ppc_stub_plt_call
;
10054 /* Determine where the call point is. */
10055 location
= (input_sec
->output_offset
10056 + input_sec
->output_section
->vma
10059 branch_offset
= destination
- location
;
10060 r_type
= ELF64_R_TYPE (rel
->r_info
);
10062 /* Determine if a long branch stub is needed. */
10063 max_branch_offset
= 1 << 25;
10064 if (r_type
!= R_PPC64_REL24
)
10065 max_branch_offset
= 1 << 15;
10067 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10068 /* We need a stub. Figure out whether a long_branch or plt_branch
10069 is needed later. */
10070 return ppc_stub_long_branch
;
10072 return ppc_stub_none
;
10075 /* With power7 weakly ordered memory model, it is possible for ld.so
10076 to update a plt entry in one thread and have another thread see a
10077 stale zero toc entry. To avoid this we need some sort of acquire
10078 barrier in the call stub. One solution is to make the load of the
10079 toc word seem to appear to depend on the load of the function entry
10080 word. Another solution is to test for r2 being zero, and branch to
10081 the appropriate glink entry if so.
10083 . fake dep barrier compare
10084 . ld 12,xxx(2) ld 12,xxx(2)
10085 . mtctr 12 mtctr 12
10086 . xor 11,12,12 ld 2,xxx+8(2)
10087 . add 2,2,11 cmpldi 2,0
10088 . ld 2,xxx+8(2) bnectr+
10089 . bctr b <glink_entry>
10091 The solution involving the compare turns out to be faster, so
10092 that's what we use unless the branch won't reach. */
10094 #define ALWAYS_USE_FAKE_DEP 0
10095 #define ALWAYS_EMIT_R2SAVE 0
10097 #define PPC_LO(v) ((v) & 0xffff)
10098 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10099 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10101 static inline unsigned int
10102 plt_stub_size (struct ppc_link_hash_table
*htab
,
10103 struct ppc_stub_hash_entry
*stub_entry
,
10106 unsigned size
= 12;
10108 if (ALWAYS_EMIT_R2SAVE
10109 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10111 if (PPC_HA (off
) != 0)
10116 if (htab
->params
->plt_static_chain
)
10118 if (htab
->params
->plt_thread_safe
)
10120 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10123 if (stub_entry
->h
!= NULL
10124 && (stub_entry
->h
== htab
->tls_get_addr_fd
10125 || stub_entry
->h
== htab
->tls_get_addr
)
10126 && !htab
->params
->no_tls_get_addr_opt
)
10131 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10132 then return the padding needed to do so. */
10133 static inline unsigned int
10134 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10135 struct ppc_stub_hash_entry
*stub_entry
,
10138 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10139 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10140 bfd_vma stub_off
= stub_entry
->stub_sec
->size
;
10142 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10143 > (stub_size
& -stub_align
))
10144 return stub_align
- (stub_off
& (stub_align
- 1));
10148 /* Build a .plt call stub. */
10150 static inline bfd_byte
*
10151 build_plt_stub (struct ppc_link_hash_table
*htab
,
10152 struct ppc_stub_hash_entry
*stub_entry
,
10153 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10155 bfd
*obfd
= htab
->params
->stub_bfd
;
10156 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10157 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10158 bfd_boolean plt_thread_safe
= htab
->params
->plt_thread_safe
;
10159 bfd_boolean use_fake_dep
= plt_thread_safe
;
10160 bfd_vma cmp_branch_off
= 0;
10162 if (!ALWAYS_USE_FAKE_DEP
10165 && !(stub_entry
->h
!= NULL
10166 && (stub_entry
->h
== htab
->tls_get_addr_fd
10167 || stub_entry
->h
== htab
->tls_get_addr
)
10168 && !htab
->params
->no_tls_get_addr_opt
))
10170 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10171 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10172 / PLT_ENTRY_SIZE (htab
));
10173 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10176 if (pltindex
> 32768)
10177 glinkoff
+= (pltindex
- 32768) * 4;
10179 + htab
->glink
->output_offset
10180 + htab
->glink
->output_section
->vma
);
10181 from
= (p
- stub_entry
->stub_sec
->contents
10182 + 4 * (ALWAYS_EMIT_R2SAVE
10183 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10184 + 4 * (PPC_HA (offset
) != 0)
10185 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10186 != PPC_HA (offset
))
10187 + 4 * (plt_static_chain
!= 0)
10189 + stub_entry
->stub_sec
->output_offset
10190 + stub_entry
->stub_sec
->output_section
->vma
);
10191 cmp_branch_off
= to
- from
;
10192 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10195 if (PPC_HA (offset
) != 0)
10199 if (ALWAYS_EMIT_R2SAVE
10200 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10201 r
[0].r_offset
+= 4;
10202 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10203 r
[1].r_offset
= r
[0].r_offset
+ 4;
10204 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10205 r
[1].r_addend
= r
[0].r_addend
;
10208 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10210 r
[2].r_offset
= r
[1].r_offset
+ 4;
10211 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10212 r
[2].r_addend
= r
[0].r_addend
;
10216 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10217 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10218 r
[2].r_addend
= r
[0].r_addend
+ 8;
10219 if (plt_static_chain
)
10221 r
[3].r_offset
= r
[2].r_offset
+ 4;
10222 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10223 r
[3].r_addend
= r
[0].r_addend
+ 16;
10228 if (ALWAYS_EMIT_R2SAVE
10229 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10230 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10231 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10232 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10234 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10236 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10239 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10244 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10245 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10247 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10248 if (plt_static_chain
)
10249 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10256 if (ALWAYS_EMIT_R2SAVE
10257 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10258 r
[0].r_offset
+= 4;
10259 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10262 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10264 r
[1].r_offset
= r
[0].r_offset
+ 4;
10265 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10266 r
[1].r_addend
= r
[0].r_addend
;
10270 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10271 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10272 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10273 if (plt_static_chain
)
10275 r
[2].r_offset
= r
[1].r_offset
+ 4;
10276 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10277 r
[2].r_addend
= r
[0].r_addend
+ 8;
10282 if (ALWAYS_EMIT_R2SAVE
10283 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10284 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10285 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10287 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10289 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10292 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10297 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10298 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10300 if (plt_static_chain
)
10301 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10302 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10305 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10307 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10308 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10309 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10312 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10316 /* Build a special .plt call stub for __tls_get_addr. */
10318 #define LD_R11_0R3 0xe9630000
10319 #define LD_R12_0R3 0xe9830000
10320 #define MR_R0_R3 0x7c601b78
10321 #define CMPDI_R11_0 0x2c2b0000
10322 #define ADD_R3_R12_R13 0x7c6c6a14
10323 #define BEQLR 0x4d820020
10324 #define MR_R3_R0 0x7c030378
10325 #define STD_R11_0R1 0xf9610000
10326 #define BCTRL 0x4e800421
10327 #define LD_R11_0R1 0xe9610000
10328 #define MTLR_R11 0x7d6803a6
10330 static inline bfd_byte
*
10331 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10332 struct ppc_stub_hash_entry
*stub_entry
,
10333 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10335 bfd
*obfd
= htab
->params
->stub_bfd
;
10337 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10338 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10339 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10340 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10341 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10342 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10343 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10344 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10345 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10348 r
[0].r_offset
+= 9 * 4;
10349 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10350 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10352 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10353 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10354 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10355 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10360 static Elf_Internal_Rela
*
10361 get_relocs (asection
*sec
, int count
)
10363 Elf_Internal_Rela
*relocs
;
10364 struct bfd_elf_section_data
*elfsec_data
;
10366 elfsec_data
= elf_section_data (sec
);
10367 relocs
= elfsec_data
->relocs
;
10368 if (relocs
== NULL
)
10370 bfd_size_type relsize
;
10371 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10372 relocs
= bfd_alloc (sec
->owner
, relsize
);
10373 if (relocs
== NULL
)
10375 elfsec_data
->relocs
= relocs
;
10376 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10377 sizeof (Elf_Internal_Shdr
));
10378 if (elfsec_data
->rela
.hdr
== NULL
)
10380 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10381 * sizeof (Elf64_External_Rela
));
10382 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10383 sec
->reloc_count
= 0;
10385 relocs
+= sec
->reloc_count
;
10386 sec
->reloc_count
+= count
;
10391 get_r2off (struct bfd_link_info
*info
,
10392 struct ppc_stub_hash_entry
*stub_entry
)
10394 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10395 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
10399 /* Support linking -R objects. Get the toc pointer from the
10402 if (!htab
->opd_abi
)
10404 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10405 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10407 if (strcmp (opd
->name
, ".opd") != 0
10408 || opd
->reloc_count
!= 0)
10410 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10411 stub_entry
->h
->elf
.root
.root
.string
);
10412 bfd_set_error (bfd_error_bad_value
);
10415 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10417 r2off
= bfd_get_64 (opd
->owner
, buf
);
10418 r2off
-= elf_gp (info
->output_bfd
);
10420 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
10425 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10427 struct ppc_stub_hash_entry
*stub_entry
;
10428 struct ppc_branch_hash_entry
*br_entry
;
10429 struct bfd_link_info
*info
;
10430 struct ppc_link_hash_table
*htab
;
10435 Elf_Internal_Rela
*r
;
10438 /* Massage our args to the form they really have. */
10439 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10442 htab
= ppc_hash_table (info
);
10446 /* Make a note of the offset within the stubs for this entry. */
10447 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10448 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10450 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10451 switch (stub_entry
->stub_type
)
10453 case ppc_stub_long_branch
:
10454 case ppc_stub_long_branch_r2off
:
10455 /* Branches are relative. This is where we are going to. */
10456 dest
= (stub_entry
->target_value
10457 + stub_entry
->target_section
->output_offset
10458 + stub_entry
->target_section
->output_section
->vma
);
10459 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10462 /* And this is where we are coming from. */
10463 off
-= (stub_entry
->stub_offset
10464 + stub_entry
->stub_sec
->output_offset
10465 + stub_entry
->stub_sec
->output_section
->vma
);
10468 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10470 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10474 htab
->stub_error
= TRUE
;
10477 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10480 if (PPC_HA (r2off
) != 0)
10483 bfd_put_32 (htab
->params
->stub_bfd
,
10484 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10487 bfd_put_32 (htab
->params
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10491 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10493 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10495 info
->callbacks
->einfo
10496 (_("%P: long branch stub `%s' offset overflow\n"),
10497 stub_entry
->root
.string
);
10498 htab
->stub_error
= TRUE
;
10502 if (info
->emitrelocations
)
10504 r
= get_relocs (stub_entry
->stub_sec
, 1);
10507 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10508 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10509 r
->r_addend
= dest
;
10510 if (stub_entry
->h
!= NULL
)
10512 struct elf_link_hash_entry
**hashes
;
10513 unsigned long symndx
;
10514 struct ppc_link_hash_entry
*h
;
10516 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10517 if (hashes
== NULL
)
10519 bfd_size_type hsize
;
10521 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10522 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10523 if (hashes
== NULL
)
10525 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10526 htab
->stub_globals
= 1;
10528 symndx
= htab
->stub_globals
++;
10530 hashes
[symndx
] = &h
->elf
;
10531 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10532 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10533 h
= ppc_follow_link (h
->oh
);
10534 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10535 /* H is an opd symbol. The addend must be zero. */
10539 off
= (h
->elf
.root
.u
.def
.value
10540 + h
->elf
.root
.u
.def
.section
->output_offset
10541 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10542 r
->r_addend
-= off
;
10548 case ppc_stub_plt_branch
:
10549 case ppc_stub_plt_branch_r2off
:
10550 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10551 stub_entry
->root
.string
+ 9,
10553 if (br_entry
== NULL
)
10555 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10556 stub_entry
->root
.string
);
10557 htab
->stub_error
= TRUE
;
10561 dest
= (stub_entry
->target_value
10562 + stub_entry
->target_section
->output_offset
10563 + stub_entry
->target_section
->output_section
->vma
);
10564 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10565 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10567 bfd_put_64 (htab
->brlt
->owner
, dest
,
10568 htab
->brlt
->contents
+ br_entry
->offset
);
10570 if (br_entry
->iter
== htab
->stub_iteration
)
10572 br_entry
->iter
= 0;
10574 if (htab
->relbrlt
!= NULL
)
10576 /* Create a reloc for the branch lookup table entry. */
10577 Elf_Internal_Rela rela
;
10580 rela
.r_offset
= (br_entry
->offset
10581 + htab
->brlt
->output_offset
10582 + htab
->brlt
->output_section
->vma
);
10583 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10584 rela
.r_addend
= dest
;
10586 rl
= htab
->relbrlt
->contents
;
10587 rl
+= (htab
->relbrlt
->reloc_count
++
10588 * sizeof (Elf64_External_Rela
));
10589 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10591 else if (info
->emitrelocations
)
10593 r
= get_relocs (htab
->brlt
, 1);
10596 /* brlt, being SEC_LINKER_CREATED does not go through the
10597 normal reloc processing. Symbols and offsets are not
10598 translated from input file to output file form, so
10599 set up the offset per the output file. */
10600 r
->r_offset
= (br_entry
->offset
10601 + htab
->brlt
->output_offset
10602 + htab
->brlt
->output_section
->vma
);
10603 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10604 r
->r_addend
= dest
;
10608 dest
= (br_entry
->offset
10609 + htab
->brlt
->output_offset
10610 + htab
->brlt
->output_section
->vma
);
10613 - elf_gp (htab
->brlt
->output_section
->owner
)
10614 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10616 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10618 info
->callbacks
->einfo
10619 (_("%P: linkage table error against `%T'\n"),
10620 stub_entry
->root
.string
);
10621 bfd_set_error (bfd_error_bad_value
);
10622 htab
->stub_error
= TRUE
;
10626 if (info
->emitrelocations
)
10628 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
10631 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10632 if (bfd_big_endian (info
->output_bfd
))
10633 r
[0].r_offset
+= 2;
10634 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
10635 r
[0].r_offset
+= 4;
10636 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10637 r
[0].r_addend
= dest
;
10638 if (PPC_HA (off
) != 0)
10640 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10641 r
[1].r_offset
= r
[0].r_offset
+ 4;
10642 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10643 r
[1].r_addend
= r
[0].r_addend
;
10647 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10649 if (PPC_HA (off
) != 0)
10652 bfd_put_32 (htab
->params
->stub_bfd
,
10653 ADDIS_R11_R2
| PPC_HA (off
), loc
);
10655 bfd_put_32 (htab
->params
->stub_bfd
,
10656 LD_R12_0R11
| PPC_LO (off
), loc
);
10661 bfd_put_32 (htab
->params
->stub_bfd
,
10662 LD_R12_0R2
| PPC_LO (off
), loc
);
10667 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10669 if (r2off
== 0 && htab
->opd_abi
)
10671 htab
->stub_error
= TRUE
;
10675 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10678 if (PPC_HA (off
) != 0)
10681 bfd_put_32 (htab
->params
->stub_bfd
,
10682 ADDIS_R11_R2
| PPC_HA (off
), loc
);
10684 bfd_put_32 (htab
->params
->stub_bfd
,
10685 LD_R12_0R11
| PPC_LO (off
), loc
);
10688 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
10690 if (PPC_HA (r2off
) != 0)
10694 bfd_put_32 (htab
->params
->stub_bfd
,
10695 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10697 if (PPC_LO (r2off
) != 0)
10701 bfd_put_32 (htab
->params
->stub_bfd
,
10702 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10706 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
10708 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
10711 case ppc_stub_plt_call
:
10712 case ppc_stub_plt_call_r2save
:
10713 if (stub_entry
->h
!= NULL
10714 && stub_entry
->h
->is_func_descriptor
10715 && stub_entry
->h
->oh
!= NULL
)
10717 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
10719 /* If the old-ABI "dot-symbol" is undefined make it weak so
10720 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10721 FIXME: We used to define the symbol on one of the call
10722 stubs instead, which is why we test symbol section id
10723 against htab->top_id in various places. Likely all
10724 these checks could now disappear. */
10725 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
10726 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
10727 /* Stop undo_symbol_twiddle changing it back to undefined. */
10728 fh
->was_undefined
= 0;
10731 /* Now build the stub. */
10732 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10733 if (dest
>= (bfd_vma
) -2)
10736 plt
= htab
->elf
.splt
;
10737 if (!htab
->elf
.dynamic_sections_created
10738 || stub_entry
->h
== NULL
10739 || stub_entry
->h
->elf
.dynindx
== -1)
10740 plt
= htab
->elf
.iplt
;
10742 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
10744 if (stub_entry
->h
== NULL
10745 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
10747 Elf_Internal_Rela rela
;
10750 rela
.r_offset
= dest
;
10752 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
10754 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
10755 rela
.r_addend
= (stub_entry
->target_value
10756 + stub_entry
->target_section
->output_offset
10757 + stub_entry
->target_section
->output_section
->vma
);
10759 rl
= (htab
->elf
.irelplt
->contents
10760 + (htab
->elf
.irelplt
->reloc_count
++
10761 * sizeof (Elf64_External_Rela
)));
10762 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
10763 stub_entry
->plt_ent
->plt
.offset
|= 1;
10767 - elf_gp (plt
->output_section
->owner
)
10768 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10770 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10772 info
->callbacks
->einfo
10773 (_("%P: linkage table error against `%T'\n"),
10774 stub_entry
->h
!= NULL
10775 ? stub_entry
->h
->elf
.root
.root
.string
10777 bfd_set_error (bfd_error_bad_value
);
10778 htab
->stub_error
= TRUE
;
10782 if (htab
->params
->plt_stub_align
!= 0)
10784 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
10786 stub_entry
->stub_sec
->size
+= pad
;
10787 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10792 if (info
->emitrelocations
)
10794 r
= get_relocs (stub_entry
->stub_sec
,
10795 ((PPC_HA (off
) != 0)
10797 ? 2 + (htab
->params
->plt_static_chain
10798 && PPC_HA (off
+ 16) == PPC_HA (off
))
10802 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10803 if (bfd_big_endian (info
->output_bfd
))
10804 r
[0].r_offset
+= 2;
10805 r
[0].r_addend
= dest
;
10807 if (stub_entry
->h
!= NULL
10808 && (stub_entry
->h
== htab
->tls_get_addr_fd
10809 || stub_entry
->h
== htab
->tls_get_addr
)
10810 && !htab
->params
->no_tls_get_addr_opt
)
10811 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
10813 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
10822 stub_entry
->stub_sec
->size
+= size
;
10824 if (htab
->params
->emit_stub_syms
)
10826 struct elf_link_hash_entry
*h
;
10829 const char *const stub_str
[] = { "long_branch",
10830 "long_branch_r2off",
10832 "plt_branch_r2off",
10836 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
10837 len2
= strlen (stub_entry
->root
.string
);
10838 name
= bfd_malloc (len1
+ len2
+ 2);
10841 memcpy (name
, stub_entry
->root
.string
, 9);
10842 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
10843 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
10844 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
10847 if (h
->root
.type
== bfd_link_hash_new
)
10849 h
->root
.type
= bfd_link_hash_defined
;
10850 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
10851 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
10852 h
->ref_regular
= 1;
10853 h
->def_regular
= 1;
10854 h
->ref_regular_nonweak
= 1;
10855 h
->forced_local
= 1;
10863 /* As above, but don't actually build the stub. Just bump offset so
10864 we know stub section sizes, and select plt_branch stubs where
10865 long_branch stubs won't do. */
10868 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10870 struct ppc_stub_hash_entry
*stub_entry
;
10871 struct bfd_link_info
*info
;
10872 struct ppc_link_hash_table
*htab
;
10876 /* Massage our args to the form they really have. */
10877 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10880 htab
= ppc_hash_table (info
);
10884 if (stub_entry
->stub_type
== ppc_stub_plt_call
10885 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10888 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
10889 if (off
>= (bfd_vma
) -2)
10891 plt
= htab
->elf
.splt
;
10892 if (!htab
->elf
.dynamic_sections_created
10893 || stub_entry
->h
== NULL
10894 || stub_entry
->h
->elf
.dynindx
== -1)
10895 plt
= htab
->elf
.iplt
;
10896 off
+= (plt
->output_offset
10897 + plt
->output_section
->vma
10898 - elf_gp (plt
->output_section
->owner
)
10899 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10901 size
= plt_stub_size (htab
, stub_entry
, off
);
10902 if (htab
->params
->plt_stub_align
)
10903 size
+= plt_stub_pad (htab
, stub_entry
, off
);
10904 if (info
->emitrelocations
)
10906 stub_entry
->stub_sec
->reloc_count
10907 += ((PPC_HA (off
) != 0)
10909 ? 2 + (htab
->params
->plt_static_chain
10910 && PPC_HA (off
+ 16) == PPC_HA (off
))
10912 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10917 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10920 bfd_vma local_off
= 0;
10922 off
= (stub_entry
->target_value
10923 + stub_entry
->target_section
->output_offset
10924 + stub_entry
->target_section
->output_section
->vma
);
10925 off
-= (stub_entry
->stub_sec
->size
10926 + stub_entry
->stub_sec
->output_offset
10927 + stub_entry
->stub_sec
->output_section
->vma
);
10929 /* Reset the stub type from the plt variant in case we now
10930 can reach with a shorter stub. */
10931 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
10932 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
10935 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10937 r2off
= get_r2off (info
, stub_entry
);
10938 if (r2off
== 0 && htab
->opd_abi
)
10940 htab
->stub_error
= TRUE
;
10944 if (PPC_HA (r2off
) != 0)
10949 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10951 /* If the branch offset if too big, use a ppc_stub_plt_branch.
10952 Do the same for -R objects without function descriptors. */
10953 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
10954 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
10957 struct ppc_branch_hash_entry
*br_entry
;
10959 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10960 stub_entry
->root
.string
+ 9,
10962 if (br_entry
== NULL
)
10964 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
10965 stub_entry
->root
.string
);
10966 htab
->stub_error
= TRUE
;
10970 if (br_entry
->iter
!= htab
->stub_iteration
)
10972 br_entry
->iter
= htab
->stub_iteration
;
10973 br_entry
->offset
= htab
->brlt
->size
;
10974 htab
->brlt
->size
+= 8;
10976 if (htab
->relbrlt
!= NULL
)
10977 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
10978 else if (info
->emitrelocations
)
10980 htab
->brlt
->reloc_count
+= 1;
10981 htab
->brlt
->flags
|= SEC_RELOC
;
10985 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
10986 off
= (br_entry
->offset
10987 + htab
->brlt
->output_offset
10988 + htab
->brlt
->output_section
->vma
10989 - elf_gp (htab
->brlt
->output_section
->owner
)
10990 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10992 if (info
->emitrelocations
)
10994 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
10995 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10998 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11001 if (PPC_HA (off
) != 0)
11007 if (PPC_HA (off
) != 0)
11010 if (PPC_HA (r2off
) != 0)
11012 if (PPC_LO (r2off
) != 0)
11016 else if (info
->emitrelocations
)
11018 stub_entry
->stub_sec
->reloc_count
+= 1;
11019 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
11023 stub_entry
->stub_sec
->size
+= size
;
11027 /* Set up various things so that we can make a list of input sections
11028 for each output section included in the link. Returns -1 on error,
11029 0 when no stubs will be needed, and 1 on success. */
11032 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11035 int top_id
, top_index
, id
;
11037 asection
**input_list
;
11039 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11044 /* Find the top input section id. */
11045 for (input_bfd
= info
->input_bfds
, top_id
= 3;
11047 input_bfd
= input_bfd
->link_next
)
11049 for (section
= input_bfd
->sections
;
11051 section
= section
->next
)
11053 if (top_id
< section
->id
)
11054 top_id
= section
->id
;
11058 htab
->top_id
= top_id
;
11059 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
11060 htab
->stub_group
= bfd_zmalloc (amt
);
11061 if (htab
->stub_group
== NULL
)
11064 /* Set toc_off for com, und, abs and ind sections. */
11065 for (id
= 0; id
< 3; id
++)
11066 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
11068 /* We can't use output_bfd->section_count here to find the top output
11069 section index as some sections may have been removed, and
11070 strip_excluded_output_sections doesn't renumber the indices. */
11071 for (section
= info
->output_bfd
->sections
, top_index
= 0;
11073 section
= section
->next
)
11075 if (top_index
< section
->index
)
11076 top_index
= section
->index
;
11079 htab
->top_index
= top_index
;
11080 amt
= sizeof (asection
*) * (top_index
+ 1);
11081 input_list
= bfd_zmalloc (amt
);
11082 htab
->input_list
= input_list
;
11083 if (input_list
== NULL
)
11089 /* Set up for first pass at multitoc partitioning. */
11092 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11094 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11096 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11097 htab
->toc_bfd
= NULL
;
11098 htab
->toc_first_sec
= NULL
;
11101 /* The linker repeatedly calls this function for each TOC input section
11102 and linker generated GOT section. Group input bfds such that the toc
11103 within a group is less than 64k in size. */
11106 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11108 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11109 bfd_vma addr
, off
, limit
;
11114 if (!htab
->second_toc_pass
)
11116 /* Keep track of the first .toc or .got section for this input bfd. */
11117 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11121 htab
->toc_bfd
= isec
->owner
;
11122 htab
->toc_first_sec
= isec
;
11125 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11126 off
= addr
- htab
->toc_curr
;
11127 limit
= 0x80008000;
11128 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11130 if (off
+ isec
->size
> limit
)
11132 addr
= (htab
->toc_first_sec
->output_offset
11133 + htab
->toc_first_sec
->output_section
->vma
);
11134 htab
->toc_curr
= addr
;
11137 /* toc_curr is the base address of this toc group. Set elf_gp
11138 for the input section to be the offset relative to the
11139 output toc base plus 0x8000. Making the input elf_gp an
11140 offset allows us to move the toc as a whole without
11141 recalculating input elf_gp. */
11142 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11143 off
+= TOC_BASE_OFF
;
11145 /* Die if someone uses a linker script that doesn't keep input
11146 file .toc and .got together. */
11148 && elf_gp (isec
->owner
) != 0
11149 && elf_gp (isec
->owner
) != off
)
11152 elf_gp (isec
->owner
) = off
;
11156 /* During the second pass toc_first_sec points to the start of
11157 a toc group, and toc_curr is used to track the old elf_gp.
11158 We use toc_bfd to ensure we only look at each bfd once. */
11159 if (htab
->toc_bfd
== isec
->owner
)
11161 htab
->toc_bfd
= isec
->owner
;
11163 if (htab
->toc_first_sec
== NULL
11164 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11166 htab
->toc_curr
= elf_gp (isec
->owner
);
11167 htab
->toc_first_sec
= isec
;
11169 addr
= (htab
->toc_first_sec
->output_offset
11170 + htab
->toc_first_sec
->output_section
->vma
);
11171 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11172 elf_gp (isec
->owner
) = off
;
11177 /* Called via elf_link_hash_traverse to merge GOT entries for global
11181 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11183 if (h
->root
.type
== bfd_link_hash_indirect
)
11186 merge_got_entries (&h
->got
.glist
);
11191 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11195 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11197 struct got_entry
*gent
;
11199 if (h
->root
.type
== bfd_link_hash_indirect
)
11202 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11203 if (!gent
->is_indirect
)
11204 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11208 /* Called on the first multitoc pass after the last call to
11209 ppc64_elf_next_toc_section. This function removes duplicate GOT
11213 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11215 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11216 struct bfd
*ibfd
, *ibfd2
;
11217 bfd_boolean done_something
;
11219 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11221 if (!htab
->do_multi_toc
)
11224 /* Merge global sym got entries within a toc group. */
11225 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11227 /* And tlsld_got. */
11228 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11230 struct got_entry
*ent
, *ent2
;
11232 if (!is_ppc64_elf (ibfd
))
11235 ent
= ppc64_tlsld_got (ibfd
);
11236 if (!ent
->is_indirect
11237 && ent
->got
.offset
!= (bfd_vma
) -1)
11239 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
11241 if (!is_ppc64_elf (ibfd2
))
11244 ent2
= ppc64_tlsld_got (ibfd2
);
11245 if (!ent2
->is_indirect
11246 && ent2
->got
.offset
!= (bfd_vma
) -1
11247 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11249 ent2
->is_indirect
= TRUE
;
11250 ent2
->got
.ent
= ent
;
11256 /* Zap sizes of got sections. */
11257 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11258 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11259 htab
->got_reli_size
= 0;
11261 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11263 asection
*got
, *relgot
;
11265 if (!is_ppc64_elf (ibfd
))
11268 got
= ppc64_elf_tdata (ibfd
)->got
;
11271 got
->rawsize
= got
->size
;
11273 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11274 relgot
->rawsize
= relgot
->size
;
11279 /* Now reallocate the got, local syms first. We don't need to
11280 allocate section contents again since we never increase size. */
11281 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11283 struct got_entry
**lgot_ents
;
11284 struct got_entry
**end_lgot_ents
;
11285 struct plt_entry
**local_plt
;
11286 struct plt_entry
**end_local_plt
;
11287 unsigned char *lgot_masks
;
11288 bfd_size_type locsymcount
;
11289 Elf_Internal_Shdr
*symtab_hdr
;
11292 if (!is_ppc64_elf (ibfd
))
11295 lgot_ents
= elf_local_got_ents (ibfd
);
11299 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11300 locsymcount
= symtab_hdr
->sh_info
;
11301 end_lgot_ents
= lgot_ents
+ locsymcount
;
11302 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11303 end_local_plt
= local_plt
+ locsymcount
;
11304 lgot_masks
= (unsigned char *) end_local_plt
;
11305 s
= ppc64_elf_tdata (ibfd
)->got
;
11306 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11308 struct got_entry
*ent
;
11310 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11312 unsigned int ent_size
= 8;
11313 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11315 ent
->got
.offset
= s
->size
;
11316 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11321 s
->size
+= ent_size
;
11322 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11324 htab
->elf
.irelplt
->size
+= rel_size
;
11325 htab
->got_reli_size
+= rel_size
;
11327 else if (info
->shared
)
11329 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11330 srel
->size
+= rel_size
;
11336 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11338 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11340 struct got_entry
*ent
;
11342 if (!is_ppc64_elf (ibfd
))
11345 ent
= ppc64_tlsld_got (ibfd
);
11346 if (!ent
->is_indirect
11347 && ent
->got
.offset
!= (bfd_vma
) -1)
11349 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11350 ent
->got
.offset
= s
->size
;
11354 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11355 srel
->size
+= sizeof (Elf64_External_Rela
);
11360 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11361 if (!done_something
)
11362 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11366 if (!is_ppc64_elf (ibfd
))
11369 got
= ppc64_elf_tdata (ibfd
)->got
;
11372 done_something
= got
->rawsize
!= got
->size
;
11373 if (done_something
)
11378 if (done_something
)
11379 (*htab
->params
->layout_sections_again
) ();
11381 /* Set up for second pass over toc sections to recalculate elf_gp
11382 on input sections. */
11383 htab
->toc_bfd
= NULL
;
11384 htab
->toc_first_sec
= NULL
;
11385 htab
->second_toc_pass
= TRUE
;
11386 return done_something
;
11389 /* Called after second pass of multitoc partitioning. */
11392 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11394 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11396 /* After the second pass, toc_curr tracks the TOC offset used
11397 for code sections below in ppc64_elf_next_input_section. */
11398 htab
->toc_curr
= TOC_BASE_OFF
;
11401 /* No toc references were found in ISEC. If the code in ISEC makes no
11402 calls, then there's no need to use toc adjusting stubs when branching
11403 into ISEC. Actually, indirect calls from ISEC are OK as they will
11404 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11405 needed, and 2 if a cyclical call-graph was found but no other reason
11406 for a stub was detected. If called from the top level, a return of
11407 2 means the same as a return of 0. */
11410 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11414 /* Mark this section as checked. */
11415 isec
->call_check_done
= 1;
11417 /* We know none of our code bearing sections will need toc stubs. */
11418 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11421 if (isec
->size
== 0)
11424 if (isec
->output_section
== NULL
)
11428 if (isec
->reloc_count
!= 0)
11430 Elf_Internal_Rela
*relstart
, *rel
;
11431 Elf_Internal_Sym
*local_syms
;
11432 struct ppc_link_hash_table
*htab
;
11434 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11435 info
->keep_memory
);
11436 if (relstart
== NULL
)
11439 /* Look for branches to outside of this section. */
11441 htab
= ppc_hash_table (info
);
11445 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11447 enum elf_ppc64_reloc_type r_type
;
11448 unsigned long r_symndx
;
11449 struct elf_link_hash_entry
*h
;
11450 struct ppc_link_hash_entry
*eh
;
11451 Elf_Internal_Sym
*sym
;
11453 struct _opd_sec_data
*opd
;
11457 r_type
= ELF64_R_TYPE (rel
->r_info
);
11458 if (r_type
!= R_PPC64_REL24
11459 && r_type
!= R_PPC64_REL14
11460 && r_type
!= R_PPC64_REL14_BRTAKEN
11461 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11464 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11465 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11472 /* Calls to dynamic lib functions go through a plt call stub
11474 eh
= (struct ppc_link_hash_entry
*) h
;
11476 && (eh
->elf
.plt
.plist
!= NULL
11478 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11484 if (sym_sec
== NULL
)
11485 /* Ignore other undefined symbols. */
11488 /* Assume branches to other sections not included in the
11489 link need stubs too, to cover -R and absolute syms. */
11490 if (sym_sec
->output_section
== NULL
)
11497 sym_value
= sym
->st_value
;
11500 if (h
->root
.type
!= bfd_link_hash_defined
11501 && h
->root
.type
!= bfd_link_hash_defweak
)
11503 sym_value
= h
->root
.u
.def
.value
;
11505 sym_value
+= rel
->r_addend
;
11507 /* If this branch reloc uses an opd sym, find the code section. */
11508 opd
= get_opd_info (sym_sec
);
11511 if (h
== NULL
&& opd
->adjust
!= NULL
)
11515 adjust
= opd
->adjust
[sym
->st_value
/ 8];
11517 /* Assume deleted functions won't ever be called. */
11519 sym_value
+= adjust
;
11522 dest
= opd_entry_value (sym_sec
, sym_value
,
11523 &sym_sec
, NULL
, FALSE
);
11524 if (dest
== (bfd_vma
) -1)
11529 + sym_sec
->output_offset
11530 + sym_sec
->output_section
->vma
);
11532 /* Ignore branch to self. */
11533 if (sym_sec
== isec
)
11536 /* If the called function uses the toc, we need a stub. */
11537 if (sym_sec
->has_toc_reloc
11538 || sym_sec
->makes_toc_func_call
)
11544 /* Assume any branch that needs a long branch stub might in fact
11545 need a plt_branch stub. A plt_branch stub uses r2. */
11546 else if (dest
- (isec
->output_offset
11547 + isec
->output_section
->vma
11548 + rel
->r_offset
) + (1 << 25)
11549 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11557 /* If calling back to a section in the process of being
11558 tested, we can't say for sure that no toc adjusting stubs
11559 are needed, so don't return zero. */
11560 else if (sym_sec
->call_check_in_progress
)
11563 /* Branches to another section that itself doesn't have any TOC
11564 references are OK. Recursively call ourselves to check. */
11565 else if (!sym_sec
->call_check_done
)
11569 /* Mark current section as indeterminate, so that other
11570 sections that call back to current won't be marked as
11572 isec
->call_check_in_progress
= 1;
11573 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11574 isec
->call_check_in_progress
= 0;
11585 if (local_syms
!= NULL
11586 && (elf_symtab_hdr (isec
->owner
).contents
11587 != (unsigned char *) local_syms
))
11589 if (elf_section_data (isec
)->relocs
!= relstart
)
11594 && isec
->map_head
.s
!= NULL
11595 && (strcmp (isec
->output_section
->name
, ".init") == 0
11596 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11598 if (isec
->map_head
.s
->has_toc_reloc
11599 || isec
->map_head
.s
->makes_toc_func_call
)
11601 else if (!isec
->map_head
.s
->call_check_done
)
11604 isec
->call_check_in_progress
= 1;
11605 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11606 isec
->call_check_in_progress
= 0;
11613 isec
->makes_toc_func_call
= 1;
11618 /* The linker repeatedly calls this function for each input section,
11619 in the order that input sections are linked into output sections.
11620 Build lists of input sections to determine groupings between which
11621 we may insert linker stubs. */
11624 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11626 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11631 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11632 && isec
->output_section
->index
<= htab
->top_index
)
11634 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
11635 /* Steal the link_sec pointer for our list. */
11636 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11637 /* This happens to make the list in reverse order,
11638 which is what we want. */
11639 PREV_SEC (isec
) = *list
;
11643 if (htab
->multi_toc_needed
)
11645 /* Analyse sections that aren't already flagged as needing a
11646 valid toc pointer. Exclude .fixup for the linux kernel.
11647 .fixup contains branches, but only back to the function that
11648 hit an exception. */
11649 if (!(isec
->has_toc_reloc
11650 || (isec
->flags
& SEC_CODE
) == 0
11651 || strcmp (isec
->name
, ".fixup") == 0
11652 || isec
->call_check_done
))
11654 if (toc_adjusting_stub_needed (info
, isec
) < 0)
11657 /* Make all sections use the TOC assigned for this object file.
11658 This will be wrong for pasted sections; We fix that in
11659 check_pasted_section(). */
11660 if (elf_gp (isec
->owner
) != 0)
11661 htab
->toc_curr
= elf_gp (isec
->owner
);
11664 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
11668 /* Check that all .init and .fini sections use the same toc, if they
11669 have toc relocs. */
11672 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
11674 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
11678 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11679 bfd_vma toc_off
= 0;
11682 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11683 if (i
->has_toc_reloc
)
11686 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11687 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
11692 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11693 if (i
->makes_toc_func_call
)
11695 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11699 /* Make sure the whole pasted function uses the same toc offset. */
11701 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11702 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
11708 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
11710 return (check_pasted_section (info
, ".init")
11711 & check_pasted_section (info
, ".fini"));
11714 /* See whether we can group stub sections together. Grouping stub
11715 sections may result in fewer stubs. More importantly, we need to
11716 put all .init* and .fini* stubs at the beginning of the .init or
11717 .fini output sections respectively, because glibc splits the
11718 _init and _fini functions into multiple parts. Putting a stub in
11719 the middle of a function is not a good idea. */
11722 group_sections (struct ppc_link_hash_table
*htab
,
11723 bfd_size_type stub_group_size
,
11724 bfd_boolean stubs_always_before_branch
)
11727 bfd_size_type stub14_group_size
;
11728 bfd_boolean suppress_size_errors
;
11730 suppress_size_errors
= FALSE
;
11731 stub14_group_size
= stub_group_size
;
11732 if (stub_group_size
== 1)
11734 /* Default values. */
11735 if (stubs_always_before_branch
)
11737 stub_group_size
= 0x1e00000;
11738 stub14_group_size
= 0x7800;
11742 stub_group_size
= 0x1c00000;
11743 stub14_group_size
= 0x7000;
11745 suppress_size_errors
= TRUE
;
11748 list
= htab
->input_list
+ htab
->top_index
;
11751 asection
*tail
= *list
;
11752 while (tail
!= NULL
)
11756 bfd_size_type total
;
11757 bfd_boolean big_sec
;
11761 total
= tail
->size
;
11762 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
11763 && ppc64_elf_section_data (tail
)->has_14bit_branch
11764 ? stub14_group_size
: stub_group_size
);
11765 if (big_sec
&& !suppress_size_errors
)
11766 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
11767 tail
->owner
, tail
);
11768 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
11770 while ((prev
= PREV_SEC (curr
)) != NULL
11771 && ((total
+= curr
->output_offset
- prev
->output_offset
)
11772 < (ppc64_elf_section_data (prev
) != NULL
11773 && ppc64_elf_section_data (prev
)->has_14bit_branch
11774 ? stub14_group_size
: stub_group_size
))
11775 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11778 /* OK, the size from the start of CURR to the end is less
11779 than stub_group_size and thus can be handled by one stub
11780 section. (or the tail section is itself larger than
11781 stub_group_size, in which case we may be toast.) We
11782 should really be keeping track of the total size of stubs
11783 added here, as stubs contribute to the final output
11784 section size. That's a little tricky, and this way will
11785 only break if stubs added make the total size more than
11786 2^25, ie. for the default stub_group_size, if stubs total
11787 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11790 prev
= PREV_SEC (tail
);
11791 /* Set up this stub group. */
11792 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11794 while (tail
!= curr
&& (tail
= prev
) != NULL
);
11796 /* But wait, there's more! Input sections up to stub_group_size
11797 bytes before the stub section can be handled by it too.
11798 Don't do this if we have a really large section after the
11799 stubs, as adding more stubs increases the chance that
11800 branches may not reach into the stub section. */
11801 if (!stubs_always_before_branch
&& !big_sec
)
11804 while (prev
!= NULL
11805 && ((total
+= tail
->output_offset
- prev
->output_offset
)
11806 < (ppc64_elf_section_data (prev
) != NULL
11807 && ppc64_elf_section_data (prev
)->has_14bit_branch
11808 ? stub14_group_size
: stub_group_size
))
11809 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11812 prev
= PREV_SEC (tail
);
11813 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11819 while (list
-- != htab
->input_list
);
11820 free (htab
->input_list
);
11824 static const unsigned char glink_eh_frame_cie
[] =
11826 0, 0, 0, 16, /* length. */
11827 0, 0, 0, 0, /* id. */
11828 1, /* CIE version. */
11829 'z', 'R', 0, /* Augmentation string. */
11830 4, /* Code alignment. */
11831 0x78, /* Data alignment. */
11833 1, /* Augmentation size. */
11834 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
11835 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
11838 /* Stripping output sections is normally done before dynamic section
11839 symbols have been allocated. This function is called later, and
11840 handles cases like htab->brlt which is mapped to its own output
11844 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
11846 if (isec
->size
== 0
11847 && isec
->output_section
->size
== 0
11848 && !(isec
->output_section
->flags
& SEC_KEEP
)
11849 && !bfd_section_removed_from_list (info
->output_bfd
,
11850 isec
->output_section
)
11851 && elf_section_data (isec
->output_section
)->dynindx
== 0)
11853 isec
->output_section
->flags
|= SEC_EXCLUDE
;
11854 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
11855 info
->output_bfd
->section_count
--;
11859 /* Determine and set the size of the stub section for a final link.
11861 The basic idea here is to examine all the relocations looking for
11862 PC-relative calls to a target that is unreachable with a "bl"
11866 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
11868 bfd_size_type stub_group_size
;
11869 bfd_boolean stubs_always_before_branch
;
11870 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11875 if (htab
->params
->plt_thread_safe
== -1 && !info
->executable
)
11876 htab
->params
->plt_thread_safe
= 1;
11877 if (!htab
->opd_abi
)
11878 htab
->params
->plt_thread_safe
= 0;
11879 else if (htab
->params
->plt_thread_safe
== -1)
11881 static const char *const thread_starter
[] =
11885 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11887 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11888 "mq_notify", "create_timer",
11892 "GOMP_parallel_start",
11893 "GOMP_parallel_loop_static_start",
11894 "GOMP_parallel_loop_dynamic_start",
11895 "GOMP_parallel_loop_guided_start",
11896 "GOMP_parallel_loop_runtime_start",
11897 "GOMP_parallel_sections_start",
11901 for (i
= 0; i
< sizeof (thread_starter
)/ sizeof (thread_starter
[0]); i
++)
11903 struct elf_link_hash_entry
*h
;
11904 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
11905 FALSE
, FALSE
, TRUE
);
11906 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
11907 if (htab
->params
->plt_thread_safe
)
11911 stubs_always_before_branch
= htab
->params
->group_size
< 0;
11912 if (htab
->params
->group_size
< 0)
11913 stub_group_size
= -htab
->params
->group_size
;
11915 stub_group_size
= htab
->params
->group_size
;
11917 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
11922 unsigned int bfd_indx
;
11923 asection
*stub_sec
;
11925 htab
->stub_iteration
+= 1;
11927 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
11929 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
11931 Elf_Internal_Shdr
*symtab_hdr
;
11933 Elf_Internal_Sym
*local_syms
= NULL
;
11935 if (!is_ppc64_elf (input_bfd
))
11938 /* We'll need the symbol table in a second. */
11939 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11940 if (symtab_hdr
->sh_info
== 0)
11943 /* Walk over each section attached to the input bfd. */
11944 for (section
= input_bfd
->sections
;
11946 section
= section
->next
)
11948 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
11950 /* If there aren't any relocs, then there's nothing more
11952 if ((section
->flags
& SEC_RELOC
) == 0
11953 || (section
->flags
& SEC_ALLOC
) == 0
11954 || (section
->flags
& SEC_LOAD
) == 0
11955 || (section
->flags
& SEC_CODE
) == 0
11956 || section
->reloc_count
== 0)
11959 /* If this section is a link-once section that will be
11960 discarded, then don't create any stubs. */
11961 if (section
->output_section
== NULL
11962 || section
->output_section
->owner
!= info
->output_bfd
)
11965 /* Get the relocs. */
11967 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
11968 info
->keep_memory
);
11969 if (internal_relocs
== NULL
)
11970 goto error_ret_free_local
;
11972 /* Now examine each relocation. */
11973 irela
= internal_relocs
;
11974 irelaend
= irela
+ section
->reloc_count
;
11975 for (; irela
< irelaend
; irela
++)
11977 enum elf_ppc64_reloc_type r_type
;
11978 unsigned int r_indx
;
11979 enum ppc_stub_type stub_type
;
11980 struct ppc_stub_hash_entry
*stub_entry
;
11981 asection
*sym_sec
, *code_sec
;
11982 bfd_vma sym_value
, code_value
;
11983 bfd_vma destination
;
11984 unsigned long local_off
;
11985 bfd_boolean ok_dest
;
11986 struct ppc_link_hash_entry
*hash
;
11987 struct ppc_link_hash_entry
*fdh
;
11988 struct elf_link_hash_entry
*h
;
11989 Elf_Internal_Sym
*sym
;
11991 const asection
*id_sec
;
11992 struct _opd_sec_data
*opd
;
11993 struct plt_entry
*plt_ent
;
11995 r_type
= ELF64_R_TYPE (irela
->r_info
);
11996 r_indx
= ELF64_R_SYM (irela
->r_info
);
11998 if (r_type
>= R_PPC64_max
)
12000 bfd_set_error (bfd_error_bad_value
);
12001 goto error_ret_free_internal
;
12004 /* Only look for stubs on branch instructions. */
12005 if (r_type
!= R_PPC64_REL24
12006 && r_type
!= R_PPC64_REL14
12007 && r_type
!= R_PPC64_REL14_BRTAKEN
12008 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12011 /* Now determine the call target, its name, value,
12013 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12014 r_indx
, input_bfd
))
12015 goto error_ret_free_internal
;
12016 hash
= (struct ppc_link_hash_entry
*) h
;
12023 sym_value
= sym
->st_value
;
12026 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12027 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12029 sym_value
= hash
->elf
.root
.u
.def
.value
;
12030 if (sym_sec
->output_section
!= NULL
)
12033 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12034 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12036 /* Recognise an old ABI func code entry sym, and
12037 use the func descriptor sym instead if it is
12039 if (hash
->elf
.root
.root
.string
[0] == '.'
12040 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
12042 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12043 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12045 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12046 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12047 if (sym_sec
->output_section
!= NULL
)
12056 bfd_set_error (bfd_error_bad_value
);
12057 goto error_ret_free_internal
;
12064 sym_value
+= irela
->r_addend
;
12065 destination
= (sym_value
12066 + sym_sec
->output_offset
12067 + sym_sec
->output_section
->vma
);
12068 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12073 code_sec
= sym_sec
;
12074 code_value
= sym_value
;
12075 opd
= get_opd_info (sym_sec
);
12080 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12082 long adjust
= opd
->adjust
[sym_value
/ 8];
12085 code_value
+= adjust
;
12086 sym_value
+= adjust
;
12088 dest
= opd_entry_value (sym_sec
, sym_value
,
12089 &code_sec
, &code_value
, FALSE
);
12090 if (dest
!= (bfd_vma
) -1)
12092 destination
= dest
;
12095 /* Fixup old ABI sym to point at code
12097 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12098 hash
->elf
.root
.u
.def
.section
= code_sec
;
12099 hash
->elf
.root
.u
.def
.value
= code_value
;
12104 /* Determine what (if any) linker stub is needed. */
12106 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12107 &plt_ent
, destination
,
12110 if (stub_type
!= ppc_stub_plt_call
)
12112 /* Check whether we need a TOC adjusting stub.
12113 Since the linker pastes together pieces from
12114 different object files when creating the
12115 _init and _fini functions, it may be that a
12116 call to what looks like a local sym is in
12117 fact a call needing a TOC adjustment. */
12118 if (code_sec
!= NULL
12119 && code_sec
->output_section
!= NULL
12120 && (htab
->stub_group
[code_sec
->id
].toc_off
12121 != htab
->stub_group
[section
->id
].toc_off
)
12122 && (code_sec
->has_toc_reloc
12123 || code_sec
->makes_toc_func_call
))
12124 stub_type
= ppc_stub_long_branch_r2off
;
12127 if (stub_type
== ppc_stub_none
)
12130 /* __tls_get_addr calls might be eliminated. */
12131 if (stub_type
!= ppc_stub_plt_call
12133 && (hash
== htab
->tls_get_addr
12134 || hash
== htab
->tls_get_addr_fd
)
12135 && section
->has_tls_reloc
12136 && irela
!= internal_relocs
)
12138 /* Get tls info. */
12139 unsigned char *tls_mask
;
12141 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12142 irela
- 1, input_bfd
))
12143 goto error_ret_free_internal
;
12144 if (*tls_mask
!= 0)
12148 if (stub_type
== ppc_stub_plt_call
12149 && irela
+ 1 < irelaend
12150 && irela
[1].r_offset
== irela
->r_offset
+ 4
12151 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12153 if (!tocsave_find (htab
, INSERT
,
12154 &local_syms
, irela
+ 1, input_bfd
))
12155 goto error_ret_free_internal
;
12157 else if (stub_type
== ppc_stub_plt_call
)
12158 stub_type
= ppc_stub_plt_call_r2save
;
12160 /* Support for grouping stub sections. */
12161 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
12163 /* Get the name of this stub. */
12164 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12166 goto error_ret_free_internal
;
12168 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12169 stub_name
, FALSE
, FALSE
);
12170 if (stub_entry
!= NULL
)
12172 /* The proper stub has already been created. */
12174 if (stub_type
== ppc_stub_plt_call_r2save
)
12175 stub_entry
->stub_type
= stub_type
;
12179 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12180 if (stub_entry
== NULL
)
12183 error_ret_free_internal
:
12184 if (elf_section_data (section
)->relocs
== NULL
)
12185 free (internal_relocs
);
12186 error_ret_free_local
:
12187 if (local_syms
!= NULL
12188 && (symtab_hdr
->contents
12189 != (unsigned char *) local_syms
))
12194 stub_entry
->stub_type
= stub_type
;
12195 if (stub_type
!= ppc_stub_plt_call
12196 && stub_type
!= ppc_stub_plt_call_r2save
)
12198 stub_entry
->target_value
= code_value
;
12199 stub_entry
->target_section
= code_sec
;
12203 stub_entry
->target_value
= sym_value
;
12204 stub_entry
->target_section
= sym_sec
;
12206 stub_entry
->h
= hash
;
12207 stub_entry
->plt_ent
= plt_ent
;
12208 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12210 if (stub_entry
->h
!= NULL
)
12211 htab
->stub_globals
+= 1;
12214 /* We're done with the internal relocs, free them. */
12215 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12216 free (internal_relocs
);
12219 if (local_syms
!= NULL
12220 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12222 if (!info
->keep_memory
)
12225 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12229 /* We may have added some stubs. Find out the new size of the
12231 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12233 stub_sec
= stub_sec
->next
)
12234 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12236 stub_sec
->rawsize
= stub_sec
->size
;
12237 stub_sec
->size
= 0;
12238 stub_sec
->reloc_count
= 0;
12239 stub_sec
->flags
&= ~SEC_RELOC
;
12242 htab
->brlt
->size
= 0;
12243 htab
->brlt
->reloc_count
= 0;
12244 htab
->brlt
->flags
&= ~SEC_RELOC
;
12245 if (htab
->relbrlt
!= NULL
)
12246 htab
->relbrlt
->size
= 0;
12248 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12250 if (info
->emitrelocations
12251 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12253 htab
->glink
->reloc_count
= 1;
12254 htab
->glink
->flags
|= SEC_RELOC
;
12257 if (htab
->glink_eh_frame
!= NULL
12258 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12259 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12261 size_t size
= 0, align
;
12263 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12265 stub_sec
= stub_sec
->next
)
12266 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12268 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12271 size
+= sizeof (glink_eh_frame_cie
);
12273 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12275 size
= (size
+ align
) & ~align
;
12276 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12277 htab
->glink_eh_frame
->size
= size
;
12280 if (htab
->params
->plt_stub_align
!= 0)
12281 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12283 stub_sec
= stub_sec
->next
)
12284 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12285 stub_sec
->size
= ((stub_sec
->size
12286 + (1 << htab
->params
->plt_stub_align
) - 1)
12287 & (-1 << htab
->params
->plt_stub_align
));
12289 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12291 stub_sec
= stub_sec
->next
)
12292 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12293 && stub_sec
->rawsize
!= stub_sec
->size
)
12296 /* Exit from this loop when no stubs have been added, and no stubs
12297 have changed size. */
12298 if (stub_sec
== NULL
12299 && (htab
->glink_eh_frame
== NULL
12300 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12303 /* Ask the linker to do its stuff. */
12304 (*htab
->params
->layout_sections_again
) ();
12307 maybe_strip_output (info
, htab
->brlt
);
12308 if (htab
->glink_eh_frame
!= NULL
)
12309 maybe_strip_output (info
, htab
->glink_eh_frame
);
12314 /* Called after we have determined section placement. If sections
12315 move, we'll be called again. Provide a value for TOCstart. */
12318 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12323 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12324 order. The TOC starts where the first of these sections starts. */
12325 s
= bfd_get_section_by_name (obfd
, ".got");
12326 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12327 s
= bfd_get_section_by_name (obfd
, ".toc");
12328 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12329 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12330 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12331 s
= bfd_get_section_by_name (obfd
, ".plt");
12332 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12334 /* This may happen for
12335 o references to TOC base (SYM@toc / TOC[tc0]) without a
12337 o bad linker script
12338 o --gc-sections and empty TOC sections
12340 FIXME: Warn user? */
12342 /* Look for a likely section. We probably won't even be
12344 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12345 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12347 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12350 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12351 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12352 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12355 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12356 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12360 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12361 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12367 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12369 _bfd_set_gp_value (obfd
, TOCstart
);
12371 if (info
!= NULL
&& s
!= NULL
&& is_ppc64_elf (obfd
))
12373 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12376 && htab
->elf
.hgot
!= NULL
)
12378 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
;
12379 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12385 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12386 write out any global entry stubs. */
12389 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12391 struct bfd_link_info
*info
;
12392 struct ppc_link_hash_table
*htab
;
12393 struct plt_entry
*pent
;
12396 if (h
->root
.type
== bfd_link_hash_indirect
)
12399 if (!h
->pointer_equality_needed
)
12402 if (h
->def_regular
)
12406 htab
= ppc_hash_table (info
);
12411 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12412 if (pent
->plt
.offset
!= (bfd_vma
) -1
12413 && pent
->addend
== 0)
12419 p
= s
->contents
+ h
->root
.u
.def
.value
;
12420 plt
= htab
->elf
.splt
;
12421 if (!htab
->elf
.dynamic_sections_created
12422 || h
->dynindx
== -1)
12423 plt
= htab
->elf
.iplt
;
12424 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12425 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12427 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12429 info
->callbacks
->einfo
12430 (_("%P: linkage table error against `%T'\n"),
12431 h
->root
.root
.string
);
12432 bfd_set_error (bfd_error_bad_value
);
12433 htab
->stub_error
= TRUE
;
12436 if (PPC_HA (off
) != 0)
12438 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
12441 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
12443 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
12445 bfd_put_32 (s
->owner
, BCTR
, p
);
12451 /* Build all the stubs associated with the current output file.
12452 The stubs are kept in a hash table attached to the main linker
12453 hash table. This function is called via gldelf64ppc_finish. */
12456 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
12459 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12460 asection
*stub_sec
;
12462 int stub_sec_count
= 0;
12467 /* Allocate memory to hold the linker stubs. */
12468 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12470 stub_sec
= stub_sec
->next
)
12471 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12472 && stub_sec
->size
!= 0)
12474 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
12475 if (stub_sec
->contents
== NULL
)
12477 /* We want to check that built size is the same as calculated
12478 size. rawsize is a convenient location to use. */
12479 stub_sec
->rawsize
= stub_sec
->size
;
12480 stub_sec
->size
= 0;
12483 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12488 /* Build the .glink plt call stub. */
12489 if (htab
->params
->emit_stub_syms
)
12491 struct elf_link_hash_entry
*h
;
12492 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
12493 TRUE
, FALSE
, FALSE
);
12496 if (h
->root
.type
== bfd_link_hash_new
)
12498 h
->root
.type
= bfd_link_hash_defined
;
12499 h
->root
.u
.def
.section
= htab
->glink
;
12500 h
->root
.u
.def
.value
= 8;
12501 h
->ref_regular
= 1;
12502 h
->def_regular
= 1;
12503 h
->ref_regular_nonweak
= 1;
12504 h
->forced_local
= 1;
12508 plt0
= (htab
->elf
.splt
->output_section
->vma
12509 + htab
->elf
.splt
->output_offset
12511 if (info
->emitrelocations
)
12513 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
12516 r
->r_offset
= (htab
->glink
->output_offset
12517 + htab
->glink
->output_section
->vma
);
12518 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
12519 r
->r_addend
= plt0
;
12521 p
= htab
->glink
->contents
;
12522 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
12523 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
12527 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
12529 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12531 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12533 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12535 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
12537 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12539 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12541 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
12543 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12545 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
12550 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
12552 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12554 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12556 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12558 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
12560 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
12562 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12564 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
12566 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12568 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
12570 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12572 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
12575 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
12577 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
12579 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
12583 /* Build the .glink lazy link call stubs. */
12585 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
12591 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
12596 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
12598 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
12603 bfd_put_32 (htab
->glink
->owner
,
12604 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
12609 /* Build .glink global entry stubs. */
12610 if (htab
->glink
->size
> htab
->glink
->rawsize
)
12611 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
12614 if (htab
->brlt
->size
!= 0)
12616 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
12618 if (htab
->brlt
->contents
== NULL
)
12621 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
12623 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
12624 htab
->relbrlt
->size
);
12625 if (htab
->relbrlt
->contents
== NULL
)
12629 if (htab
->glink_eh_frame
!= NULL
12630 && htab
->glink_eh_frame
->size
!= 0)
12633 bfd_byte
*last_fde
;
12634 size_t last_fde_len
, size
, align
, pad
;
12636 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12639 htab
->glink_eh_frame
->contents
= p
;
12642 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12644 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12645 /* CIE length (rewrite in case little-endian). */
12646 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12647 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12648 p
+= sizeof (glink_eh_frame_cie
);
12650 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12652 stub_sec
= stub_sec
->next
)
12653 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12658 bfd_put_32 (htab
->elf
.dynobj
, 16, p
);
12661 val
= p
- htab
->glink_eh_frame
->contents
;
12662 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12664 /* Offset to stub section. */
12665 val
= (stub_sec
->output_section
->vma
12666 + stub_sec
->output_offset
);
12667 val
-= (htab
->glink_eh_frame
->output_section
->vma
12668 + htab
->glink_eh_frame
->output_offset
);
12669 val
-= p
- htab
->glink_eh_frame
->contents
;
12670 if (val
+ 0x80000000 > 0xffffffff)
12672 info
->callbacks
->einfo
12673 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12677 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12679 /* stub section size. */
12680 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->rawsize
, p
);
12682 /* Augmentation. */
12687 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12692 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12695 val
= p
- htab
->glink_eh_frame
->contents
;
12696 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12698 /* Offset to .glink. */
12699 val
= (htab
->glink
->output_section
->vma
12700 + htab
->glink
->output_offset
12702 val
-= (htab
->glink_eh_frame
->output_section
->vma
12703 + htab
->glink_eh_frame
->output_offset
);
12704 val
-= p
- htab
->glink_eh_frame
->contents
;
12705 if (val
+ 0x80000000 > 0xffffffff)
12707 info
->callbacks
->einfo
12708 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12709 htab
->glink
->name
);
12712 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12715 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12717 /* Augmentation. */
12720 *p
++ = DW_CFA_advance_loc
+ 1;
12721 *p
++ = DW_CFA_register
;
12724 *p
++ = DW_CFA_advance_loc
+ 4;
12725 *p
++ = DW_CFA_restore_extended
;
12728 /* Subsume any padding into the last FDE if user .eh_frame
12729 sections are aligned more than glink_eh_frame. Otherwise any
12730 zero padding will be seen as a terminator. */
12731 size
= p
- htab
->glink_eh_frame
->contents
;
12733 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12735 pad
= ((size
+ align
) & ~align
) - size
;
12736 htab
->glink_eh_frame
->size
= size
+ pad
;
12737 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12740 /* Build the stubs as directed by the stub hash table. */
12741 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
12743 if (htab
->relbrlt
!= NULL
)
12744 htab
->relbrlt
->reloc_count
= 0;
12746 if (htab
->params
->plt_stub_align
!= 0)
12747 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12749 stub_sec
= stub_sec
->next
)
12750 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12751 stub_sec
->size
= ((stub_sec
->size
12752 + (1 << htab
->params
->plt_stub_align
) - 1)
12753 & (-1 << htab
->params
->plt_stub_align
));
12755 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12757 stub_sec
= stub_sec
->next
)
12758 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12760 stub_sec_count
+= 1;
12761 if (stub_sec
->rawsize
!= stub_sec
->size
)
12765 if (stub_sec
!= NULL
12766 || (htab
->glink_eh_frame
!= NULL
12767 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
12769 htab
->stub_error
= TRUE
;
12770 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
12773 if (htab
->stub_error
)
12778 *stats
= bfd_malloc (500);
12779 if (*stats
== NULL
)
12782 sprintf (*stats
, _("linker stubs in %u group%s\n"
12784 " toc adjust %lu\n"
12785 " long branch %lu\n"
12786 " long toc adj %lu\n"
12788 " plt call toc %lu"),
12790 stub_sec_count
== 1 ? "" : "s",
12791 htab
->stub_count
[ppc_stub_long_branch
- 1],
12792 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
12793 htab
->stub_count
[ppc_stub_plt_branch
- 1],
12794 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
12795 htab
->stub_count
[ppc_stub_plt_call
- 1],
12796 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1]);
12801 /* This function undoes the changes made by add_symbol_adjust. */
12804 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
12806 struct ppc_link_hash_entry
*eh
;
12808 if (h
->root
.type
== bfd_link_hash_indirect
)
12811 eh
= (struct ppc_link_hash_entry
*) h
;
12812 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
12815 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
12820 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
12822 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12825 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
12828 /* What to do when ld finds relocations against symbols defined in
12829 discarded sections. */
12831 static unsigned int
12832 ppc64_elf_action_discarded (asection
*sec
)
12834 if (strcmp (".opd", sec
->name
) == 0)
12837 if (strcmp (".toc", sec
->name
) == 0)
12840 if (strcmp (".toc1", sec
->name
) == 0)
12843 return _bfd_elf_default_action_discarded (sec
);
12846 /* The RELOCATE_SECTION function is called by the ELF backend linker
12847 to handle the relocations for a section.
12849 The relocs are always passed as Rela structures; if the section
12850 actually uses Rel structures, the r_addend field will always be
12853 This function is responsible for adjust the section contents as
12854 necessary, and (if using Rela relocs and generating a
12855 relocatable output file) adjusting the reloc addend as
12858 This function does not have to worry about setting the reloc
12859 address or the reloc symbol index.
12861 LOCAL_SYMS is a pointer to the swapped in local symbols.
12863 LOCAL_SECTIONS is an array giving the section in the input file
12864 corresponding to the st_shndx field of each local symbol.
12866 The global hash table entry for the global symbols can be found
12867 via elf_sym_hashes (input_bfd).
12869 When generating relocatable output, this function must handle
12870 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12871 going to be the section symbol corresponding to the output
12872 section, which means that the addend must be adjusted
12876 ppc64_elf_relocate_section (bfd
*output_bfd
,
12877 struct bfd_link_info
*info
,
12879 asection
*input_section
,
12880 bfd_byte
*contents
,
12881 Elf_Internal_Rela
*relocs
,
12882 Elf_Internal_Sym
*local_syms
,
12883 asection
**local_sections
)
12885 struct ppc_link_hash_table
*htab
;
12886 Elf_Internal_Shdr
*symtab_hdr
;
12887 struct elf_link_hash_entry
**sym_hashes
;
12888 Elf_Internal_Rela
*rel
;
12889 Elf_Internal_Rela
*relend
;
12890 Elf_Internal_Rela outrel
;
12892 struct got_entry
**local_got_ents
;
12894 bfd_boolean ret
= TRUE
;
12895 bfd_boolean is_opd
;
12896 /* Assume 'at' branch hints. */
12897 bfd_boolean is_isa_v2
= TRUE
;
12898 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
12900 /* Initialize howto table if needed. */
12901 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
12904 htab
= ppc_hash_table (info
);
12908 /* Don't relocate stub sections. */
12909 if (input_section
->owner
== htab
->params
->stub_bfd
)
12912 BFD_ASSERT (is_ppc64_elf (input_bfd
));
12914 local_got_ents
= elf_local_got_ents (input_bfd
);
12915 TOCstart
= elf_gp (output_bfd
);
12916 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12917 sym_hashes
= elf_sym_hashes (input_bfd
);
12918 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
12921 relend
= relocs
+ input_section
->reloc_count
;
12922 for (; rel
< relend
; rel
++)
12924 enum elf_ppc64_reloc_type r_type
;
12926 bfd_reloc_status_type r
;
12927 Elf_Internal_Sym
*sym
;
12929 struct elf_link_hash_entry
*h_elf
;
12930 struct ppc_link_hash_entry
*h
;
12931 struct ppc_link_hash_entry
*fdh
;
12932 const char *sym_name
;
12933 unsigned long r_symndx
, toc_symndx
;
12934 bfd_vma toc_addend
;
12935 unsigned char tls_mask
, tls_gd
, tls_type
;
12936 unsigned char sym_type
;
12937 bfd_vma relocation
;
12938 bfd_boolean unresolved_reloc
;
12939 bfd_boolean warned
;
12940 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
12943 struct ppc_stub_hash_entry
*stub_entry
;
12944 bfd_vma max_br_offset
;
12946 const Elf_Internal_Rela orig_rel
= *rel
;
12948 r_type
= ELF64_R_TYPE (rel
->r_info
);
12949 r_symndx
= ELF64_R_SYM (rel
->r_info
);
12951 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12952 symbol of the previous ADDR64 reloc. The symbol gives us the
12953 proper TOC base to use. */
12954 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
12956 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
12958 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
12964 unresolved_reloc
= FALSE
;
12967 if (r_symndx
< symtab_hdr
->sh_info
)
12969 /* It's a local symbol. */
12970 struct _opd_sec_data
*opd
;
12972 sym
= local_syms
+ r_symndx
;
12973 sec
= local_sections
[r_symndx
];
12974 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
12975 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
12976 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
12977 opd
= get_opd_info (sec
);
12978 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
12980 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
12985 /* If this is a relocation against the opd section sym
12986 and we have edited .opd, adjust the reloc addend so
12987 that ld -r and ld --emit-relocs output is correct.
12988 If it is a reloc against some other .opd symbol,
12989 then the symbol value will be adjusted later. */
12990 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
12991 rel
->r_addend
+= adjust
;
12993 relocation
+= adjust
;
12999 bfd_boolean ignored
;
13001 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13002 r_symndx
, symtab_hdr
, sym_hashes
,
13003 h_elf
, sec
, relocation
,
13004 unresolved_reloc
, warned
, ignored
);
13005 sym_name
= h_elf
->root
.root
.string
;
13006 sym_type
= h_elf
->type
;
13008 && sec
->owner
== output_bfd
13009 && strcmp (sec
->name
, ".opd") == 0)
13011 /* This is a symbol defined in a linker script. All
13012 such are defined in output sections, even those
13013 defined by simple assignment from a symbol defined in
13014 an input section. Transfer the symbol to an
13015 appropriate input .opd section, so that a branch to
13016 this symbol will be mapped to the location specified
13017 by the opd entry. */
13018 struct bfd_link_order
*lo
;
13019 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13020 if (lo
->type
== bfd_indirect_link_order
)
13022 asection
*isec
= lo
->u
.indirect
.section
;
13023 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13024 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13027 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13028 h_elf
->root
.u
.def
.section
= isec
;
13035 h
= (struct ppc_link_hash_entry
*) h_elf
;
13037 if (sec
!= NULL
&& discarded_section (sec
))
13038 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
13040 ppc64_elf_howto_table
[r_type
], 0,
13043 if (info
->relocatable
)
13046 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13048 relocation
= (TOCstart
13049 + htab
->stub_group
[input_section
->id
].toc_off
);
13050 sec
= bfd_abs_section_ptr
;
13051 unresolved_reloc
= FALSE
;
13054 /* TLS optimizations. Replace instruction sequences and relocs
13055 based on information we collected in tls_optimize. We edit
13056 RELOCS so that --emit-relocs will output something sensible
13057 for the final instruction stream. */
13062 tls_mask
= h
->tls_mask
;
13063 else if (local_got_ents
!= NULL
)
13065 struct plt_entry
**local_plt
= (struct plt_entry
**)
13066 (local_got_ents
+ symtab_hdr
->sh_info
);
13067 unsigned char *lgot_masks
= (unsigned char *)
13068 (local_plt
+ symtab_hdr
->sh_info
);
13069 tls_mask
= lgot_masks
[r_symndx
];
13072 && (r_type
== R_PPC64_TLS
13073 || r_type
== R_PPC64_TLSGD
13074 || r_type
== R_PPC64_TLSLD
))
13076 /* Check for toc tls entries. */
13077 unsigned char *toc_tls
;
13079 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13080 &local_syms
, rel
, input_bfd
))
13084 tls_mask
= *toc_tls
;
13087 /* Check that tls relocs are used with tls syms, and non-tls
13088 relocs are used with non-tls syms. */
13089 if (r_symndx
!= STN_UNDEF
13090 && r_type
!= R_PPC64_NONE
13092 || h
->elf
.root
.type
== bfd_link_hash_defined
13093 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13094 && (IS_PPC64_TLS_RELOC (r_type
)
13095 != (sym_type
== STT_TLS
13096 || (sym_type
== STT_SECTION
13097 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13100 && (r_type
== R_PPC64_TLS
13101 || r_type
== R_PPC64_TLSGD
13102 || r_type
== R_PPC64_TLSLD
))
13103 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13106 info
->callbacks
->einfo
13107 (!IS_PPC64_TLS_RELOC (r_type
)
13108 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13109 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13110 input_bfd
, input_section
, rel
->r_offset
,
13111 ppc64_elf_howto_table
[r_type
]->name
,
13115 /* Ensure reloc mapping code below stays sane. */
13116 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13117 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13118 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13119 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13120 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13121 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13122 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13123 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13124 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13125 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13133 case R_PPC64_LO_DS_OPT
:
13134 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13135 if ((insn
& (0x3f << 26)) != 58u << 26)
13137 insn
+= (14u << 26) - (58u << 26);
13138 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13139 r_type
= R_PPC64_TOC16_LO
;
13140 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13143 case R_PPC64_TOC16
:
13144 case R_PPC64_TOC16_LO
:
13145 case R_PPC64_TOC16_DS
:
13146 case R_PPC64_TOC16_LO_DS
:
13148 /* Check for toc tls entries. */
13149 unsigned char *toc_tls
;
13152 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13153 &local_syms
, rel
, input_bfd
);
13159 tls_mask
= *toc_tls
;
13160 if (r_type
== R_PPC64_TOC16_DS
13161 || r_type
== R_PPC64_TOC16_LO_DS
)
13164 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13169 /* If we found a GD reloc pair, then we might be
13170 doing a GD->IE transition. */
13173 tls_gd
= TLS_TPRELGD
;
13174 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13177 else if (retval
== 3)
13179 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13187 case R_PPC64_GOT_TPREL16_HI
:
13188 case R_PPC64_GOT_TPREL16_HA
:
13190 && (tls_mask
& TLS_TPREL
) == 0)
13192 rel
->r_offset
-= d_offset
;
13193 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13194 r_type
= R_PPC64_NONE
;
13195 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13199 case R_PPC64_GOT_TPREL16_DS
:
13200 case R_PPC64_GOT_TPREL16_LO_DS
:
13202 && (tls_mask
& TLS_TPREL
) == 0)
13205 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13207 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13208 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13209 r_type
= R_PPC64_TPREL16_HA
;
13210 if (toc_symndx
!= 0)
13212 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13213 rel
->r_addend
= toc_addend
;
13214 /* We changed the symbol. Start over in order to
13215 get h, sym, sec etc. right. */
13220 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13226 && (tls_mask
& TLS_TPREL
) == 0)
13228 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
13229 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13232 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13233 /* Was PPC64_TLS which sits on insn boundary, now
13234 PPC64_TPREL16_LO which is at low-order half-word. */
13235 rel
->r_offset
+= d_offset
;
13236 r_type
= R_PPC64_TPREL16_LO
;
13237 if (toc_symndx
!= 0)
13239 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13240 rel
->r_addend
= toc_addend
;
13241 /* We changed the symbol. Start over in order to
13242 get h, sym, sec etc. right. */
13247 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13251 case R_PPC64_GOT_TLSGD16_HI
:
13252 case R_PPC64_GOT_TLSGD16_HA
:
13253 tls_gd
= TLS_TPRELGD
;
13254 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13258 case R_PPC64_GOT_TLSLD16_HI
:
13259 case R_PPC64_GOT_TLSLD16_HA
:
13260 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13263 if ((tls_mask
& tls_gd
) != 0)
13264 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13265 + R_PPC64_GOT_TPREL16_DS
);
13268 rel
->r_offset
-= d_offset
;
13269 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13270 r_type
= R_PPC64_NONE
;
13272 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13276 case R_PPC64_GOT_TLSGD16
:
13277 case R_PPC64_GOT_TLSGD16_LO
:
13278 tls_gd
= TLS_TPRELGD
;
13279 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13283 case R_PPC64_GOT_TLSLD16
:
13284 case R_PPC64_GOT_TLSLD16_LO
:
13285 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13287 unsigned int insn1
, insn2
, insn3
;
13291 offset
= (bfd_vma
) -1;
13292 /* If not using the newer R_PPC64_TLSGD/LD to mark
13293 __tls_get_addr calls, we must trust that the call
13294 stays with its arg setup insns, ie. that the next
13295 reloc is the __tls_get_addr call associated with
13296 the current reloc. Edit both insns. */
13297 if (input_section
->has_tls_get_addr_call
13298 && rel
+ 1 < relend
13299 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13300 htab
->tls_get_addr
,
13301 htab
->tls_get_addr_fd
))
13302 offset
= rel
[1].r_offset
;
13303 if ((tls_mask
& tls_gd
) != 0)
13306 insn1
= bfd_get_32 (output_bfd
,
13307 contents
+ rel
->r_offset
- d_offset
);
13308 insn1
&= (1 << 26) - (1 << 2);
13309 insn1
|= 58 << 26; /* ld */
13310 insn2
= 0x7c636a14; /* add 3,3,13 */
13311 if (offset
!= (bfd_vma
) -1)
13312 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13313 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13314 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13315 + R_PPC64_GOT_TPREL16_DS
);
13317 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13318 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13323 insn1
= 0x3c6d0000; /* addis 3,13,0 */
13324 insn2
= 0x38630000; /* addi 3,3,0 */
13327 /* Was an LD reloc. */
13329 sec
= local_sections
[toc_symndx
];
13331 r_symndx
< symtab_hdr
->sh_info
;
13333 if (local_sections
[r_symndx
] == sec
)
13335 if (r_symndx
>= symtab_hdr
->sh_info
)
13336 r_symndx
= STN_UNDEF
;
13337 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13338 if (r_symndx
!= STN_UNDEF
)
13339 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13340 + sec
->output_offset
13341 + sec
->output_section
->vma
);
13343 else if (toc_symndx
!= 0)
13345 r_symndx
= toc_symndx
;
13346 rel
->r_addend
= toc_addend
;
13348 r_type
= R_PPC64_TPREL16_HA
;
13349 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13350 if (offset
!= (bfd_vma
) -1)
13352 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13353 R_PPC64_TPREL16_LO
);
13354 rel
[1].r_offset
= offset
+ d_offset
;
13355 rel
[1].r_addend
= rel
->r_addend
;
13358 bfd_put_32 (output_bfd
, insn1
,
13359 contents
+ rel
->r_offset
- d_offset
);
13360 if (offset
!= (bfd_vma
) -1)
13362 insn3
= bfd_get_32 (output_bfd
,
13363 contents
+ offset
+ 4);
13365 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13367 rel
[1].r_offset
+= 4;
13368 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13371 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13373 if ((tls_mask
& tls_gd
) == 0
13374 && (tls_gd
== 0 || toc_symndx
!= 0))
13376 /* We changed the symbol. Start over in order
13377 to get h, sym, sec etc. right. */
13384 case R_PPC64_TLSGD
:
13385 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13387 unsigned int insn2
, insn3
;
13388 bfd_vma offset
= rel
->r_offset
;
13390 if ((tls_mask
& TLS_TPRELGD
) != 0)
13393 r_type
= R_PPC64_NONE
;
13394 insn2
= 0x7c636a14; /* add 3,3,13 */
13399 if (toc_symndx
!= 0)
13401 r_symndx
= toc_symndx
;
13402 rel
->r_addend
= toc_addend
;
13404 r_type
= R_PPC64_TPREL16_LO
;
13405 rel
->r_offset
= offset
+ d_offset
;
13406 insn2
= 0x38630000; /* addi 3,3,0 */
13408 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13409 /* Zap the reloc on the _tls_get_addr call too. */
13410 BFD_ASSERT (offset
== rel
[1].r_offset
);
13411 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13412 insn3
= bfd_get_32 (output_bfd
,
13413 contents
+ offset
+ 4);
13415 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13417 rel
->r_offset
+= 4;
13418 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13421 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13422 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13430 case R_PPC64_TLSLD
:
13431 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13433 unsigned int insn2
, insn3
;
13434 bfd_vma offset
= rel
->r_offset
;
13437 sec
= local_sections
[toc_symndx
];
13439 r_symndx
< symtab_hdr
->sh_info
;
13441 if (local_sections
[r_symndx
] == sec
)
13443 if (r_symndx
>= symtab_hdr
->sh_info
)
13444 r_symndx
= STN_UNDEF
;
13445 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13446 if (r_symndx
!= STN_UNDEF
)
13447 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13448 + sec
->output_offset
13449 + sec
->output_section
->vma
);
13451 r_type
= R_PPC64_TPREL16_LO
;
13452 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13453 rel
->r_offset
= offset
+ d_offset
;
13454 /* Zap the reloc on the _tls_get_addr call too. */
13455 BFD_ASSERT (offset
== rel
[1].r_offset
);
13456 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13457 insn2
= 0x38630000; /* addi 3,3,0 */
13458 insn3
= bfd_get_32 (output_bfd
,
13459 contents
+ offset
+ 4);
13461 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13463 rel
->r_offset
+= 4;
13464 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13467 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13473 case R_PPC64_DTPMOD64
:
13474 if (rel
+ 1 < relend
13475 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13476 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13478 if ((tls_mask
& TLS_GD
) == 0)
13480 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13481 if ((tls_mask
& TLS_TPRELGD
) != 0)
13482 r_type
= R_PPC64_TPREL64
;
13485 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13486 r_type
= R_PPC64_NONE
;
13488 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13493 if ((tls_mask
& TLS_LD
) == 0)
13495 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13496 r_type
= R_PPC64_NONE
;
13497 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13502 case R_PPC64_TPREL64
:
13503 if ((tls_mask
& TLS_TPREL
) == 0)
13505 r_type
= R_PPC64_NONE
;
13506 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13510 case R_PPC64_REL16_HA
:
13511 /* If we are generating a non-PIC executable, edit
13512 . 0: addis 2,12,.TOC.-0b@ha
13513 . addi 2,2,.TOC.-0b@l
13514 used by ELFv2 global entry points to set up r2, to
13517 if .TOC. is in range. */
13519 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
13520 && rel
+ 1 < relend
13521 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
13522 && rel
[1].r_offset
== rel
->r_offset
+ 4
13523 && rel
[1].r_addend
== rel
->r_addend
+ 4
13524 && relocation
+ 0x80008000 <= 0xffffffff)
13526 unsigned int insn1
, insn2
;
13527 bfd_vma offset
= rel
->r_offset
- d_offset
;
13528 insn1
= bfd_get_32 (output_bfd
, contents
+ offset
);
13529 insn2
= bfd_get_32 (output_bfd
, contents
+ offset
+ 4);
13530 if ((insn1
& 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13531 && (insn2
& 0xffff0000) == 0x38420000 /* addi 2,2 */)
13533 r_type
= R_PPC64_ADDR16_HA
;
13534 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13535 rel
->r_addend
-= d_offset
;
13536 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
13537 rel
[1].r_addend
-= d_offset
+ 4;
13538 bfd_put_32 (output_bfd
, 0x3c400000, contents
+ offset
);
13544 /* Handle other relocations that tweak non-addend part of insn. */
13546 max_br_offset
= 1 << 25;
13547 addend
= rel
->r_addend
;
13548 reloc_dest
= DEST_NORMAL
;
13554 case R_PPC64_TOCSAVE
:
13555 if (relocation
+ addend
== (rel
->r_offset
13556 + input_section
->output_offset
13557 + input_section
->output_section
->vma
)
13558 && tocsave_find (htab
, NO_INSERT
,
13559 &local_syms
, rel
, input_bfd
))
13561 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13563 || insn
== CROR_151515
|| insn
== CROR_313131
)
13564 bfd_put_32 (input_bfd
,
13565 STD_R2_0R1
+ STK_TOC (htab
),
13566 contents
+ rel
->r_offset
);
13570 /* Branch taken prediction relocations. */
13571 case R_PPC64_ADDR14_BRTAKEN
:
13572 case R_PPC64_REL14_BRTAKEN
:
13573 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13576 /* Branch not taken prediction relocations. */
13577 case R_PPC64_ADDR14_BRNTAKEN
:
13578 case R_PPC64_REL14_BRNTAKEN
:
13579 insn
|= bfd_get_32 (output_bfd
,
13580 contents
+ rel
->r_offset
) & ~(0x01 << 21);
13583 case R_PPC64_REL14
:
13584 max_br_offset
= 1 << 15;
13587 case R_PPC64_REL24
:
13588 /* Calls to functions with a different TOC, such as calls to
13589 shared objects, need to alter the TOC pointer. This is
13590 done using a linkage stub. A REL24 branching to these
13591 linkage stubs needs to be followed by a nop, as the nop
13592 will be replaced with an instruction to restore the TOC
13597 && h
->oh
->is_func_descriptor
)
13598 fdh
= ppc_follow_link (h
->oh
);
13599 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
13601 if (stub_entry
!= NULL
13602 && (stub_entry
->stub_type
== ppc_stub_plt_call
13603 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
13604 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
13605 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
13607 bfd_boolean can_plt_call
= FALSE
;
13609 /* All of these stubs will modify r2, so there must be a
13610 branch and link followed by a nop. The nop is
13611 replaced by an insn to restore r2. */
13612 if (rel
->r_offset
+ 8 <= input_section
->size
)
13616 br
= bfd_get_32 (input_bfd
,
13617 contents
+ rel
->r_offset
);
13622 nop
= bfd_get_32 (input_bfd
,
13623 contents
+ rel
->r_offset
+ 4);
13625 || nop
== CROR_151515
|| nop
== CROR_313131
)
13628 && (h
== htab
->tls_get_addr_fd
13629 || h
== htab
->tls_get_addr
)
13630 && !htab
->params
->no_tls_get_addr_opt
)
13632 /* Special stub used, leave nop alone. */
13635 bfd_put_32 (input_bfd
,
13636 LD_R2_0R1
+ STK_TOC (htab
),
13637 contents
+ rel
->r_offset
+ 4);
13638 can_plt_call
= TRUE
;
13643 if (!can_plt_call
&& h
!= NULL
)
13645 const char *name
= h
->elf
.root
.root
.string
;
13650 if (strncmp (name
, "__libc_start_main", 17) == 0
13651 && (name
[17] == 0 || name
[17] == '@'))
13653 /* Allow crt1 branch to go via a toc adjusting
13654 stub. Other calls that never return could do
13655 the same, if we could detect such. */
13656 can_plt_call
= TRUE
;
13662 /* g++ as of 20130507 emits self-calls without a
13663 following nop. This is arguably wrong since we
13664 have conflicting information. On the one hand a
13665 global symbol and on the other a local call
13666 sequence, but don't error for this special case.
13667 It isn't possible to cheaply verify we have
13668 exactly such a call. Allow all calls to the same
13670 asection
*code_sec
= sec
;
13672 if (get_opd_info (sec
) != NULL
)
13674 bfd_vma off
= (relocation
+ addend
13675 - sec
->output_section
->vma
13676 - sec
->output_offset
);
13678 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
13680 if (code_sec
== input_section
)
13681 can_plt_call
= TRUE
;
13686 info
->callbacks
->einfo
13687 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13688 "recompile with -fPIC\n"),
13689 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
13691 bfd_set_error (bfd_error_bad_value
);
13696 && (stub_entry
->stub_type
== ppc_stub_plt_call
13697 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
13698 unresolved_reloc
= FALSE
;
13701 if ((stub_entry
== NULL
13702 || stub_entry
->stub_type
== ppc_stub_long_branch
13703 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13704 && get_opd_info (sec
) != NULL
)
13706 /* The branch destination is the value of the opd entry. */
13707 bfd_vma off
= (relocation
+ addend
13708 - sec
->output_section
->vma
13709 - sec
->output_offset
);
13710 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
13711 if (dest
!= (bfd_vma
) -1)
13715 reloc_dest
= DEST_OPD
;
13719 /* If the branch is out of reach we ought to have a long
13721 from
= (rel
->r_offset
13722 + input_section
->output_offset
13723 + input_section
->output_section
->vma
);
13725 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
13729 if (stub_entry
!= NULL
13730 && (stub_entry
->stub_type
== ppc_stub_long_branch
13731 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13732 && (r_type
== R_PPC64_ADDR14_BRTAKEN
13733 || r_type
== R_PPC64_ADDR14_BRNTAKEN
13734 || (relocation
+ addend
- from
+ max_br_offset
13735 < 2 * max_br_offset
)))
13736 /* Don't use the stub if this branch is in range. */
13739 if (stub_entry
!= NULL
)
13741 /* Munge up the value and addend so that we call the stub
13742 rather than the procedure directly. */
13743 relocation
= (stub_entry
->stub_offset
13744 + stub_entry
->stub_sec
->output_offset
13745 + stub_entry
->stub_sec
->output_section
->vma
);
13747 reloc_dest
= DEST_STUB
;
13749 if ((stub_entry
->stub_type
== ppc_stub_plt_call
13750 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13751 && (ALWAYS_EMIT_R2SAVE
13752 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13753 && rel
+ 1 < relend
13754 && rel
[1].r_offset
== rel
->r_offset
+ 4
13755 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
13763 /* Set 'a' bit. This is 0b00010 in BO field for branch
13764 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13765 for branch on CTR insns (BO == 1a00t or 1a01t). */
13766 if ((insn
& (0x14 << 21)) == (0x04 << 21))
13767 insn
|= 0x02 << 21;
13768 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
13769 insn
|= 0x08 << 21;
13775 /* Invert 'y' bit if not the default. */
13776 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
13777 insn
^= 0x01 << 21;
13780 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13783 /* NOP out calls to undefined weak functions.
13784 We can thus call a weak function without first
13785 checking whether the function is defined. */
13787 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13788 && h
->elf
.dynindx
== -1
13789 && r_type
== R_PPC64_REL24
13793 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13799 /* Set `addend'. */
13804 info
->callbacks
->einfo
13805 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13806 input_bfd
, (int) r_type
, sym_name
);
13808 bfd_set_error (bfd_error_bad_value
);
13814 case R_PPC64_TLSGD
:
13815 case R_PPC64_TLSLD
:
13816 case R_PPC64_TOCSAVE
:
13817 case R_PPC64_GNU_VTINHERIT
:
13818 case R_PPC64_GNU_VTENTRY
:
13821 /* GOT16 relocations. Like an ADDR16 using the symbol's
13822 address in the GOT as relocation value instead of the
13823 symbol's value itself. Also, create a GOT entry for the
13824 symbol and put the symbol value there. */
13825 case R_PPC64_GOT_TLSGD16
:
13826 case R_PPC64_GOT_TLSGD16_LO
:
13827 case R_PPC64_GOT_TLSGD16_HI
:
13828 case R_PPC64_GOT_TLSGD16_HA
:
13829 tls_type
= TLS_TLS
| TLS_GD
;
13832 case R_PPC64_GOT_TLSLD16
:
13833 case R_PPC64_GOT_TLSLD16_LO
:
13834 case R_PPC64_GOT_TLSLD16_HI
:
13835 case R_PPC64_GOT_TLSLD16_HA
:
13836 tls_type
= TLS_TLS
| TLS_LD
;
13839 case R_PPC64_GOT_TPREL16_DS
:
13840 case R_PPC64_GOT_TPREL16_LO_DS
:
13841 case R_PPC64_GOT_TPREL16_HI
:
13842 case R_PPC64_GOT_TPREL16_HA
:
13843 tls_type
= TLS_TLS
| TLS_TPREL
;
13846 case R_PPC64_GOT_DTPREL16_DS
:
13847 case R_PPC64_GOT_DTPREL16_LO_DS
:
13848 case R_PPC64_GOT_DTPREL16_HI
:
13849 case R_PPC64_GOT_DTPREL16_HA
:
13850 tls_type
= TLS_TLS
| TLS_DTPREL
;
13853 case R_PPC64_GOT16
:
13854 case R_PPC64_GOT16_LO
:
13855 case R_PPC64_GOT16_HI
:
13856 case R_PPC64_GOT16_HA
:
13857 case R_PPC64_GOT16_DS
:
13858 case R_PPC64_GOT16_LO_DS
:
13861 /* Relocation is to the entry for this symbol in the global
13866 unsigned long indx
= 0;
13867 struct got_entry
*ent
;
13869 if (tls_type
== (TLS_TLS
| TLS_LD
)
13871 || !h
->elf
.def_dynamic
))
13872 ent
= ppc64_tlsld_got (input_bfd
);
13878 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
13879 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
13882 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
13883 /* This is actually a static link, or it is a
13884 -Bsymbolic link and the symbol is defined
13885 locally, or the symbol was forced to be local
13886 because of a version file. */
13890 BFD_ASSERT (h
->elf
.dynindx
!= -1);
13891 indx
= h
->elf
.dynindx
;
13892 unresolved_reloc
= FALSE
;
13894 ent
= h
->elf
.got
.glist
;
13898 if (local_got_ents
== NULL
)
13900 ent
= local_got_ents
[r_symndx
];
13903 for (; ent
!= NULL
; ent
= ent
->next
)
13904 if (ent
->addend
== orig_rel
.r_addend
13905 && ent
->owner
== input_bfd
13906 && ent
->tls_type
== tls_type
)
13912 if (ent
->is_indirect
)
13913 ent
= ent
->got
.ent
;
13914 offp
= &ent
->got
.offset
;
13915 got
= ppc64_elf_tdata (ent
->owner
)->got
;
13919 /* The offset must always be a multiple of 8. We use the
13920 least significant bit to record whether we have already
13921 processed this entry. */
13923 if ((off
& 1) != 0)
13927 /* Generate relocs for the dynamic linker, except in
13928 the case of TLSLD where we'll use one entry per
13936 ? h
->elf
.type
== STT_GNU_IFUNC
13937 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
13939 relgot
= htab
->elf
.irelplt
;
13940 else if ((info
->shared
|| indx
!= 0)
13942 || (tls_type
== (TLS_TLS
| TLS_LD
)
13943 && !h
->elf
.def_dynamic
)
13944 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
13945 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
13946 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
13947 if (relgot
!= NULL
)
13949 outrel
.r_offset
= (got
->output_section
->vma
13950 + got
->output_offset
13952 outrel
.r_addend
= addend
;
13953 if (tls_type
& (TLS_LD
| TLS_GD
))
13955 outrel
.r_addend
= 0;
13956 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
13957 if (tls_type
== (TLS_TLS
| TLS_GD
))
13959 loc
= relgot
->contents
;
13960 loc
+= (relgot
->reloc_count
++
13961 * sizeof (Elf64_External_Rela
));
13962 bfd_elf64_swap_reloca_out (output_bfd
,
13964 outrel
.r_offset
+= 8;
13965 outrel
.r_addend
= addend
;
13967 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
13970 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
13971 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
13972 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
13973 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
13974 else if (indx
!= 0)
13975 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
13979 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
13981 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
13983 /* Write the .got section contents for the sake
13985 loc
= got
->contents
+ off
;
13986 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
13990 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
13992 outrel
.r_addend
+= relocation
;
13993 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
13994 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
13996 loc
= relgot
->contents
;
13997 loc
+= (relgot
->reloc_count
++
13998 * sizeof (Elf64_External_Rela
));
13999 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14002 /* Init the .got section contents here if we're not
14003 emitting a reloc. */
14006 relocation
+= addend
;
14007 if (tls_type
== (TLS_TLS
| TLS_LD
))
14009 else if (tls_type
!= 0)
14011 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14012 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14013 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14015 if (tls_type
== (TLS_TLS
| TLS_GD
))
14017 bfd_put_64 (output_bfd
, relocation
,
14018 got
->contents
+ off
+ 8);
14023 bfd_put_64 (output_bfd
, relocation
,
14024 got
->contents
+ off
);
14028 if (off
>= (bfd_vma
) -2)
14031 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14032 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
14036 case R_PPC64_PLT16_HA
:
14037 case R_PPC64_PLT16_HI
:
14038 case R_PPC64_PLT16_LO
:
14039 case R_PPC64_PLT32
:
14040 case R_PPC64_PLT64
:
14041 /* Relocation is to the entry for this symbol in the
14042 procedure linkage table. */
14044 /* Resolve a PLT reloc against a local symbol directly,
14045 without using the procedure linkage table. */
14049 /* It's possible that we didn't make a PLT entry for this
14050 symbol. This happens when statically linking PIC code,
14051 or when using -Bsymbolic. Go find a match if there is a
14053 if (htab
->elf
.splt
!= NULL
)
14055 struct plt_entry
*ent
;
14056 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14057 if (ent
->plt
.offset
!= (bfd_vma
) -1
14058 && ent
->addend
== orig_rel
.r_addend
)
14060 relocation
= (htab
->elf
.splt
->output_section
->vma
14061 + htab
->elf
.splt
->output_offset
14062 + ent
->plt
.offset
);
14063 unresolved_reloc
= FALSE
;
14070 /* Relocation value is TOC base. */
14071 relocation
= TOCstart
;
14072 if (r_symndx
== STN_UNDEF
)
14073 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
14074 else if (unresolved_reloc
)
14076 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
14077 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
14079 unresolved_reloc
= TRUE
;
14082 /* TOC16 relocs. We want the offset relative to the TOC base,
14083 which is the address of the start of the TOC plus 0x8000.
14084 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14086 case R_PPC64_TOC16
:
14087 case R_PPC64_TOC16_LO
:
14088 case R_PPC64_TOC16_HI
:
14089 case R_PPC64_TOC16_DS
:
14090 case R_PPC64_TOC16_LO_DS
:
14091 case R_PPC64_TOC16_HA
:
14092 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
14095 /* Relocate against the beginning of the section. */
14096 case R_PPC64_SECTOFF
:
14097 case R_PPC64_SECTOFF_LO
:
14098 case R_PPC64_SECTOFF_HI
:
14099 case R_PPC64_SECTOFF_DS
:
14100 case R_PPC64_SECTOFF_LO_DS
:
14101 case R_PPC64_SECTOFF_HA
:
14103 addend
-= sec
->output_section
->vma
;
14106 case R_PPC64_REL16
:
14107 case R_PPC64_REL16_LO
:
14108 case R_PPC64_REL16_HI
:
14109 case R_PPC64_REL16_HA
:
14112 case R_PPC64_REL14
:
14113 case R_PPC64_REL14_BRNTAKEN
:
14114 case R_PPC64_REL14_BRTAKEN
:
14115 case R_PPC64_REL24
:
14118 case R_PPC64_TPREL16
:
14119 case R_PPC64_TPREL16_LO
:
14120 case R_PPC64_TPREL16_HI
:
14121 case R_PPC64_TPREL16_HA
:
14122 case R_PPC64_TPREL16_DS
:
14123 case R_PPC64_TPREL16_LO_DS
:
14124 case R_PPC64_TPREL16_HIGH
:
14125 case R_PPC64_TPREL16_HIGHA
:
14126 case R_PPC64_TPREL16_HIGHER
:
14127 case R_PPC64_TPREL16_HIGHERA
:
14128 case R_PPC64_TPREL16_HIGHEST
:
14129 case R_PPC64_TPREL16_HIGHESTA
:
14131 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14132 && h
->elf
.dynindx
== -1)
14134 /* Make this relocation against an undefined weak symbol
14135 resolve to zero. This is really just a tweak, since
14136 code using weak externs ought to check that they are
14137 defined before using them. */
14138 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14140 insn
= bfd_get_32 (output_bfd
, p
);
14141 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14143 bfd_put_32 (output_bfd
, insn
, p
);
14146 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14148 /* The TPREL16 relocs shouldn't really be used in shared
14149 libs as they will result in DT_TEXTREL being set, but
14150 support them anyway. */
14154 case R_PPC64_DTPREL16
:
14155 case R_PPC64_DTPREL16_LO
:
14156 case R_PPC64_DTPREL16_HI
:
14157 case R_PPC64_DTPREL16_HA
:
14158 case R_PPC64_DTPREL16_DS
:
14159 case R_PPC64_DTPREL16_LO_DS
:
14160 case R_PPC64_DTPREL16_HIGH
:
14161 case R_PPC64_DTPREL16_HIGHA
:
14162 case R_PPC64_DTPREL16_HIGHER
:
14163 case R_PPC64_DTPREL16_HIGHERA
:
14164 case R_PPC64_DTPREL16_HIGHEST
:
14165 case R_PPC64_DTPREL16_HIGHESTA
:
14166 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14169 case R_PPC64_ADDR64_LOCAL
:
14170 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14175 case R_PPC64_DTPMOD64
:
14180 case R_PPC64_TPREL64
:
14181 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14184 case R_PPC64_DTPREL64
:
14185 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14188 /* Relocations that may need to be propagated if this is a
14190 case R_PPC64_REL30
:
14191 case R_PPC64_REL32
:
14192 case R_PPC64_REL64
:
14193 case R_PPC64_ADDR14
:
14194 case R_PPC64_ADDR14_BRNTAKEN
:
14195 case R_PPC64_ADDR14_BRTAKEN
:
14196 case R_PPC64_ADDR16
:
14197 case R_PPC64_ADDR16_DS
:
14198 case R_PPC64_ADDR16_HA
:
14199 case R_PPC64_ADDR16_HI
:
14200 case R_PPC64_ADDR16_HIGH
:
14201 case R_PPC64_ADDR16_HIGHA
:
14202 case R_PPC64_ADDR16_HIGHER
:
14203 case R_PPC64_ADDR16_HIGHERA
:
14204 case R_PPC64_ADDR16_HIGHEST
:
14205 case R_PPC64_ADDR16_HIGHESTA
:
14206 case R_PPC64_ADDR16_LO
:
14207 case R_PPC64_ADDR16_LO_DS
:
14208 case R_PPC64_ADDR24
:
14209 case R_PPC64_ADDR32
:
14210 case R_PPC64_ADDR64
:
14211 case R_PPC64_UADDR16
:
14212 case R_PPC64_UADDR32
:
14213 case R_PPC64_UADDR64
:
14215 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14218 if (NO_OPD_RELOCS
&& is_opd
)
14223 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14224 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
14225 && (must_be_dyn_reloc (info
, r_type
)
14226 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
14227 || (ELIMINATE_COPY_RELOCS
14230 && h
->elf
.dynindx
!= -1
14231 && !h
->elf
.non_got_ref
14232 && !h
->elf
.def_regular
)
14235 ? h
->elf
.type
== STT_GNU_IFUNC
14236 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
14238 bfd_boolean skip
, relocate
;
14242 /* When generating a dynamic object, these relocations
14243 are copied into the output file to be resolved at run
14249 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14250 input_section
, rel
->r_offset
);
14251 if (out_off
== (bfd_vma
) -1)
14253 else if (out_off
== (bfd_vma
) -2)
14254 skip
= TRUE
, relocate
= TRUE
;
14255 out_off
+= (input_section
->output_section
->vma
14256 + input_section
->output_offset
);
14257 outrel
.r_offset
= out_off
;
14258 outrel
.r_addend
= rel
->r_addend
;
14260 /* Optimize unaligned reloc use. */
14261 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14262 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14263 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14264 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14265 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14266 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14267 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14268 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14269 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14272 memset (&outrel
, 0, sizeof outrel
);
14273 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14275 && r_type
!= R_PPC64_TOC
)
14277 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14278 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14282 /* This symbol is local, or marked to become local,
14283 or this is an opd section reloc which must point
14284 at a local function. */
14285 outrel
.r_addend
+= relocation
;
14286 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14288 if (is_opd
&& h
!= NULL
)
14290 /* Lie about opd entries. This case occurs
14291 when building shared libraries and we
14292 reference a function in another shared
14293 lib. The same thing happens for a weak
14294 definition in an application that's
14295 overridden by a strong definition in a
14296 shared lib. (I believe this is a generic
14297 bug in binutils handling of weak syms.)
14298 In these cases we won't use the opd
14299 entry in this lib. */
14300 unresolved_reloc
= FALSE
;
14303 && r_type
== R_PPC64_ADDR64
14305 ? h
->elf
.type
== STT_GNU_IFUNC
14306 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14307 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14310 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14312 /* We need to relocate .opd contents for ld.so.
14313 Prelink also wants simple and consistent rules
14314 for relocs. This make all RELATIVE relocs have
14315 *r_offset equal to r_addend. */
14324 ? h
->elf
.type
== STT_GNU_IFUNC
14325 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14327 info
->callbacks
->einfo
14328 (_("%P: %H: %s for indirect "
14329 "function `%T' unsupported\n"),
14330 input_bfd
, input_section
, rel
->r_offset
,
14331 ppc64_elf_howto_table
[r_type
]->name
,
14335 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14337 else if (sec
== NULL
|| sec
->owner
== NULL
)
14339 bfd_set_error (bfd_error_bad_value
);
14346 osec
= sec
->output_section
;
14347 indx
= elf_section_data (osec
)->dynindx
;
14351 if ((osec
->flags
& SEC_READONLY
) == 0
14352 && htab
->elf
.data_index_section
!= NULL
)
14353 osec
= htab
->elf
.data_index_section
;
14355 osec
= htab
->elf
.text_index_section
;
14356 indx
= elf_section_data (osec
)->dynindx
;
14358 BFD_ASSERT (indx
!= 0);
14360 /* We are turning this relocation into one
14361 against a section symbol, so subtract out
14362 the output section's address but not the
14363 offset of the input section in the output
14365 outrel
.r_addend
-= osec
->vma
;
14368 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14372 sreloc
= elf_section_data (input_section
)->sreloc
;
14374 ? h
->elf
.type
== STT_GNU_IFUNC
14375 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14376 sreloc
= htab
->elf
.irelplt
;
14377 if (sreloc
== NULL
)
14380 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14383 loc
= sreloc
->contents
;
14384 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14385 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14387 /* If this reloc is against an external symbol, it will
14388 be computed at runtime, so there's no need to do
14389 anything now. However, for the sake of prelink ensure
14390 that the section contents are a known value. */
14393 unresolved_reloc
= FALSE
;
14394 /* The value chosen here is quite arbitrary as ld.so
14395 ignores section contents except for the special
14396 case of .opd where the contents might be accessed
14397 before relocation. Choose zero, as that won't
14398 cause reloc overflow. */
14401 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14402 to improve backward compatibility with older
14404 if (r_type
== R_PPC64_ADDR64
)
14405 addend
= outrel
.r_addend
;
14406 /* Adjust pc_relative relocs to have zero in *r_offset. */
14407 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14408 addend
= (input_section
->output_section
->vma
14409 + input_section
->output_offset
14416 case R_PPC64_GLOB_DAT
:
14417 case R_PPC64_JMP_SLOT
:
14418 case R_PPC64_JMP_IREL
:
14419 case R_PPC64_RELATIVE
:
14420 /* We shouldn't ever see these dynamic relocs in relocatable
14422 /* Fall through. */
14424 case R_PPC64_PLTGOT16
:
14425 case R_PPC64_PLTGOT16_DS
:
14426 case R_PPC64_PLTGOT16_HA
:
14427 case R_PPC64_PLTGOT16_HI
:
14428 case R_PPC64_PLTGOT16_LO
:
14429 case R_PPC64_PLTGOT16_LO_DS
:
14430 case R_PPC64_PLTREL32
:
14431 case R_PPC64_PLTREL64
:
14432 /* These ones haven't been implemented yet. */
14434 info
->callbacks
->einfo
14435 (_("%P: %B: %s is not supported for `%T'\n"),
14437 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
14439 bfd_set_error (bfd_error_invalid_operation
);
14444 /* Multi-instruction sequences that access the TOC can be
14445 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14446 to nop; addi rb,r2,x; */
14452 case R_PPC64_GOT_TLSLD16_HI
:
14453 case R_PPC64_GOT_TLSGD16_HI
:
14454 case R_PPC64_GOT_TPREL16_HI
:
14455 case R_PPC64_GOT_DTPREL16_HI
:
14456 case R_PPC64_GOT16_HI
:
14457 case R_PPC64_TOC16_HI
:
14458 /* These relocs would only be useful if building up an
14459 offset to later add to r2, perhaps in an indexed
14460 addressing mode instruction. Don't try to optimize.
14461 Unfortunately, the possibility of someone building up an
14462 offset like this or even with the HA relocs, means that
14463 we need to check the high insn when optimizing the low
14467 case R_PPC64_GOT_TLSLD16_HA
:
14468 case R_PPC64_GOT_TLSGD16_HA
:
14469 case R_PPC64_GOT_TPREL16_HA
:
14470 case R_PPC64_GOT_DTPREL16_HA
:
14471 case R_PPC64_GOT16_HA
:
14472 case R_PPC64_TOC16_HA
:
14473 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14474 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14476 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14477 bfd_put_32 (input_bfd
, NOP
, p
);
14481 case R_PPC64_GOT_TLSLD16_LO
:
14482 case R_PPC64_GOT_TLSGD16_LO
:
14483 case R_PPC64_GOT_TPREL16_LO_DS
:
14484 case R_PPC64_GOT_DTPREL16_LO_DS
:
14485 case R_PPC64_GOT16_LO
:
14486 case R_PPC64_GOT16_LO_DS
:
14487 case R_PPC64_TOC16_LO
:
14488 case R_PPC64_TOC16_LO_DS
:
14489 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14490 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14492 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14493 insn
= bfd_get_32 (input_bfd
, p
);
14494 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
14496 /* Transform addic to addi when we change reg. */
14497 insn
&= ~((0x3f << 26) | (0x1f << 16));
14498 insn
|= (14u << 26) | (2 << 16);
14502 insn
&= ~(0x1f << 16);
14505 bfd_put_32 (input_bfd
, insn
, p
);
14510 /* Do any further special processing. */
14516 case R_PPC64_REL16_HA
:
14517 case R_PPC64_ADDR16_HA
:
14518 case R_PPC64_ADDR16_HIGHA
:
14519 case R_PPC64_ADDR16_HIGHERA
:
14520 case R_PPC64_ADDR16_HIGHESTA
:
14521 case R_PPC64_TOC16_HA
:
14522 case R_PPC64_SECTOFF_HA
:
14523 case R_PPC64_TPREL16_HA
:
14524 case R_PPC64_TPREL16_HIGHA
:
14525 case R_PPC64_TPREL16_HIGHERA
:
14526 case R_PPC64_TPREL16_HIGHESTA
:
14527 case R_PPC64_DTPREL16_HA
:
14528 case R_PPC64_DTPREL16_HIGHA
:
14529 case R_PPC64_DTPREL16_HIGHERA
:
14530 case R_PPC64_DTPREL16_HIGHESTA
:
14531 /* It's just possible that this symbol is a weak symbol
14532 that's not actually defined anywhere. In that case,
14533 'sec' would be NULL, and we should leave the symbol
14534 alone (it will be set to zero elsewhere in the link). */
14539 case R_PPC64_GOT16_HA
:
14540 case R_PPC64_PLTGOT16_HA
:
14541 case R_PPC64_PLT16_HA
:
14542 case R_PPC64_GOT_TLSGD16_HA
:
14543 case R_PPC64_GOT_TLSLD16_HA
:
14544 case R_PPC64_GOT_TPREL16_HA
:
14545 case R_PPC64_GOT_DTPREL16_HA
:
14546 /* Add 0x10000 if sign bit in 0:15 is set.
14547 Bits 0:15 are not used. */
14551 case R_PPC64_ADDR16_DS
:
14552 case R_PPC64_ADDR16_LO_DS
:
14553 case R_PPC64_GOT16_DS
:
14554 case R_PPC64_GOT16_LO_DS
:
14555 case R_PPC64_PLT16_LO_DS
:
14556 case R_PPC64_SECTOFF_DS
:
14557 case R_PPC64_SECTOFF_LO_DS
:
14558 case R_PPC64_TOC16_DS
:
14559 case R_PPC64_TOC16_LO_DS
:
14560 case R_PPC64_PLTGOT16_DS
:
14561 case R_PPC64_PLTGOT16_LO_DS
:
14562 case R_PPC64_GOT_TPREL16_DS
:
14563 case R_PPC64_GOT_TPREL16_LO_DS
:
14564 case R_PPC64_GOT_DTPREL16_DS
:
14565 case R_PPC64_GOT_DTPREL16_LO_DS
:
14566 case R_PPC64_TPREL16_DS
:
14567 case R_PPC64_TPREL16_LO_DS
:
14568 case R_PPC64_DTPREL16_DS
:
14569 case R_PPC64_DTPREL16_LO_DS
:
14570 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
14572 /* If this reloc is against an lq insn, then the value must be
14573 a multiple of 16. This is somewhat of a hack, but the
14574 "correct" way to do this by defining _DQ forms of all the
14575 _DS relocs bloats all reloc switches in this file. It
14576 doesn't seem to make much sense to use any of these relocs
14577 in data, so testing the insn should be safe. */
14578 if ((insn
& (0x3f << 26)) == (56u << 26))
14580 if (((relocation
+ addend
) & mask
) != 0)
14582 info
->callbacks
->einfo
14583 (_("%P: %H: error: %s not a multiple of %u\n"),
14584 input_bfd
, input_section
, rel
->r_offset
,
14585 ppc64_elf_howto_table
[r_type
]->name
,
14587 bfd_set_error (bfd_error_bad_value
);
14594 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14595 because such sections are not SEC_ALLOC and thus ld.so will
14596 not process them. */
14597 if (unresolved_reloc
14598 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
14599 && h
->elf
.def_dynamic
)
14600 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
14601 rel
->r_offset
) != (bfd_vma
) -1)
14603 info
->callbacks
->einfo
14604 (_("%P: %H: unresolvable %s against `%T'\n"),
14605 input_bfd
, input_section
, rel
->r_offset
,
14606 ppc64_elf_howto_table
[(int) r_type
]->name
,
14607 h
->elf
.root
.root
.string
);
14611 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
14619 if (r
!= bfd_reloc_ok
)
14621 char *more_info
= NULL
;
14622 const char *reloc_name
= ppc64_elf_howto_table
[r_type
]->name
;
14624 if (reloc_dest
!= DEST_NORMAL
)
14626 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
14627 if (more_info
!= NULL
)
14629 strcpy (more_info
, reloc_name
);
14630 strcat (more_info
, (reloc_dest
== DEST_OPD
14631 ? " (OPD)" : " (stub)"));
14632 reloc_name
= more_info
;
14636 if (r
== bfd_reloc_overflow
)
14641 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14642 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
14644 /* Assume this is a call protected by other code that
14645 detects the symbol is undefined. If this is the case,
14646 we can safely ignore the overflow. If not, the
14647 program is hosed anyway, and a little warning isn't
14653 if (!((*info
->callbacks
->reloc_overflow
)
14654 (info
, &h
->elf
.root
, sym_name
,
14655 reloc_name
, orig_rel
.r_addend
,
14656 input_bfd
, input_section
, rel
->r_offset
)))
14661 info
->callbacks
->einfo
14662 (_("%P: %H: %s against `%T': error %d\n"),
14663 input_bfd
, input_section
, rel
->r_offset
,
14664 reloc_name
, sym_name
, (int) r
);
14667 if (more_info
!= NULL
)
14672 /* If we're emitting relocations, then shortly after this function
14673 returns, reloc offsets and addends for this section will be
14674 adjusted. Worse, reloc symbol indices will be for the output
14675 file rather than the input. Save a copy of the relocs for
14676 opd_entry_value. */
14677 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
14680 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
14681 rel
= bfd_alloc (input_bfd
, amt
);
14682 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
14683 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
14686 memcpy (rel
, relocs
, amt
);
14691 /* Adjust the value of any local symbols in opd sections. */
14694 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
14695 const char *name ATTRIBUTE_UNUSED
,
14696 Elf_Internal_Sym
*elfsym
,
14697 asection
*input_sec
,
14698 struct elf_link_hash_entry
*h
)
14700 struct _opd_sec_data
*opd
;
14707 opd
= get_opd_info (input_sec
);
14708 if (opd
== NULL
|| opd
->adjust
== NULL
)
14711 value
= elfsym
->st_value
- input_sec
->output_offset
;
14712 if (!info
->relocatable
)
14713 value
-= input_sec
->output_section
->vma
;
14715 adjust
= opd
->adjust
[value
/ 8];
14719 elfsym
->st_value
+= adjust
;
14723 /* Finish up dynamic symbol handling. We set the contents of various
14724 dynamic sections here. */
14727 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
14728 struct bfd_link_info
*info
,
14729 struct elf_link_hash_entry
*h
,
14730 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
14732 struct ppc_link_hash_table
*htab
;
14733 struct plt_entry
*ent
;
14734 Elf_Internal_Rela rela
;
14737 htab
= ppc_hash_table (info
);
14741 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14742 if (ent
->plt
.offset
!= (bfd_vma
) -1)
14744 /* This symbol has an entry in the procedure linkage
14745 table. Set it up. */
14746 if (!htab
->elf
.dynamic_sections_created
14747 || h
->dynindx
== -1)
14749 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
14751 && (h
->root
.type
== bfd_link_hash_defined
14752 || h
->root
.type
== bfd_link_hash_defweak
));
14753 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
14754 + htab
->elf
.iplt
->output_offset
14755 + ent
->plt
.offset
);
14757 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
14759 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14760 rela
.r_addend
= (h
->root
.u
.def
.value
14761 + h
->root
.u
.def
.section
->output_offset
14762 + h
->root
.u
.def
.section
->output_section
->vma
14764 loc
= (htab
->elf
.irelplt
->contents
14765 + (htab
->elf
.irelplt
->reloc_count
++
14766 * sizeof (Elf64_External_Rela
)));
14770 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
14771 + htab
->elf
.splt
->output_offset
14772 + ent
->plt
.offset
);
14773 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
14774 rela
.r_addend
= ent
->addend
;
14775 loc
= (htab
->elf
.srelplt
->contents
14776 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
14777 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
14779 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14781 if (!htab
->opd_abi
)
14783 if (!h
->def_regular
)
14785 /* Mark the symbol as undefined, rather than as
14786 defined in glink. Leave the value if there were
14787 any relocations where pointer equality matters
14788 (this is a clue for the dynamic linker, to make
14789 function pointer comparisons work between an
14790 application and shared library), otherwise set it
14792 sym
->st_shndx
= SHN_UNDEF
;
14793 if (!h
->pointer_equality_needed
)
14795 else if (!h
->ref_regular_nonweak
)
14797 /* This breaks function pointer comparisons, but
14798 that is better than breaking tests for a NULL
14799 function pointer. */
14808 /* This symbol needs a copy reloc. Set it up. */
14810 if (h
->dynindx
== -1
14811 || (h
->root
.type
!= bfd_link_hash_defined
14812 && h
->root
.type
!= bfd_link_hash_defweak
)
14813 || htab
->relbss
== NULL
)
14816 rela
.r_offset
= (h
->root
.u
.def
.value
14817 + h
->root
.u
.def
.section
->output_section
->vma
14818 + h
->root
.u
.def
.section
->output_offset
);
14819 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
14821 loc
= htab
->relbss
->contents
;
14822 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14823 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14829 /* Used to decide how to sort relocs in an optimal manner for the
14830 dynamic linker, before writing them out. */
14832 static enum elf_reloc_type_class
14833 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
14834 const asection
*rel_sec
,
14835 const Elf_Internal_Rela
*rela
)
14837 enum elf_ppc64_reloc_type r_type
;
14838 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
14840 if (rel_sec
== htab
->elf
.irelplt
)
14841 return reloc_class_ifunc
;
14843 r_type
= ELF64_R_TYPE (rela
->r_info
);
14846 case R_PPC64_RELATIVE
:
14847 return reloc_class_relative
;
14848 case R_PPC64_JMP_SLOT
:
14849 return reloc_class_plt
;
14851 return reloc_class_copy
;
14853 return reloc_class_normal
;
14857 /* Finish up the dynamic sections. */
14860 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
14861 struct bfd_link_info
*info
)
14863 struct ppc_link_hash_table
*htab
;
14867 htab
= ppc_hash_table (info
);
14871 dynobj
= htab
->elf
.dynobj
;
14872 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
14874 if (htab
->elf
.dynamic_sections_created
)
14876 Elf64_External_Dyn
*dyncon
, *dynconend
;
14878 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
14881 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
14882 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
14883 for (; dyncon
< dynconend
; dyncon
++)
14885 Elf_Internal_Dyn dyn
;
14888 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
14895 case DT_PPC64_GLINK
:
14897 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
14898 /* We stupidly defined DT_PPC64_GLINK to be the start
14899 of glink rather than the first entry point, which is
14900 what ld.so needs, and now have a bigger stub to
14901 support automatic multiple TOCs. */
14902 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
14906 s
= bfd_get_section_by_name (output_bfd
, ".opd");
14909 dyn
.d_un
.d_ptr
= s
->vma
;
14913 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
14914 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
14917 case DT_PPC64_OPDSZ
:
14918 s
= bfd_get_section_by_name (output_bfd
, ".opd");
14921 dyn
.d_un
.d_val
= s
->size
;
14925 s
= htab
->elf
.splt
;
14926 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
14930 s
= htab
->elf
.srelplt
;
14931 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
14935 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
14939 /* Don't count procedure linkage table relocs in the
14940 overall reloc count. */
14941 s
= htab
->elf
.srelplt
;
14944 dyn
.d_un
.d_val
-= s
->size
;
14948 /* We may not be using the standard ELF linker script.
14949 If .rela.plt is the first .rela section, we adjust
14950 DT_RELA to not include it. */
14951 s
= htab
->elf
.srelplt
;
14954 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
14956 dyn
.d_un
.d_ptr
+= s
->size
;
14960 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
14964 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
14966 /* Fill in the first entry in the global offset table.
14967 We use it to hold the link-time TOCbase. */
14968 bfd_put_64 (output_bfd
,
14969 elf_gp (output_bfd
) + TOC_BASE_OFF
,
14970 htab
->elf
.sgot
->contents
);
14972 /* Set .got entry size. */
14973 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
14976 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
14978 /* Set .plt entry size. */
14979 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
14980 = PLT_ENTRY_SIZE (htab
);
14983 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14984 brlt ourselves if emitrelocations. */
14985 if (htab
->brlt
!= NULL
14986 && htab
->brlt
->reloc_count
!= 0
14987 && !_bfd_elf_link_output_relocs (output_bfd
,
14989 elf_section_data (htab
->brlt
)->rela
.hdr
,
14990 elf_section_data (htab
->brlt
)->relocs
,
14994 if (htab
->glink
!= NULL
14995 && htab
->glink
->reloc_count
!= 0
14996 && !_bfd_elf_link_output_relocs (output_bfd
,
14998 elf_section_data (htab
->glink
)->rela
.hdr
,
14999 elf_section_data (htab
->glink
)->relocs
,
15004 if (htab
->glink_eh_frame
!= NULL
15005 && htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15006 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15007 htab
->glink_eh_frame
,
15008 htab
->glink_eh_frame
->contents
))
15011 /* We need to handle writing out multiple GOT sections ourselves,
15012 since we didn't add them to DYNOBJ. We know dynobj is the first
15014 while ((dynobj
= dynobj
->link_next
) != NULL
)
15018 if (!is_ppc64_elf (dynobj
))
15021 s
= ppc64_elf_tdata (dynobj
)->got
;
15024 && s
->output_section
!= bfd_abs_section_ptr
15025 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15026 s
->contents
, s
->output_offset
,
15029 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15032 && s
->output_section
!= bfd_abs_section_ptr
15033 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15034 s
->contents
, s
->output_offset
,
15042 #include "elf64-target.h"
15044 /* FreeBSD support */
15046 #undef TARGET_LITTLE_SYM
15047 #undef TARGET_LITTLE_NAME
15049 #undef TARGET_BIG_SYM
15050 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
15051 #undef TARGET_BIG_NAME
15052 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15055 #define ELF_OSABI ELFOSABI_FREEBSD
15058 #define elf64_bed elf64_powerpc_fbsd_bed
15060 #include "elf64-target.h"