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PR23207, hppa ld SIGSEGVs on invalid object files
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
219d1afa 2 Copyright (C) 1993-2018 Free Software Foundation, Inc.
252b5132 3
571fe01f 4 This file is part of BFD, the Binary File Descriptor library.
252b5132 5
571fe01f
NC		 6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
571fe01f 9 (at your option) any later version.
252b5132 10
571fe01f
NC		 11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
252b5132 15
571fe01f
NC		 16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
252b5132 20
0afcef53 21#include "elfxx-x86.h"
5a68afcf 22#include "elf-nacl.h"
eac338cf 23#include "elf-vxworks.h"
e41b3a13 24#include "dwarf2.h"
02a86693 25#include "opcode/i386.h"
252b5132 26
55fd94b0
AM		 27/* 386 uses REL relocations instead of RELA. */
28#define USE_REL 1
252b5132
RH		 29
30#include "elf/i386.h"
31
32static reloc_howto_type elf_howto_table[]=
33{
6346d5ca 34 HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
1b452ec6 35 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 36 TRUE, 0x00000000, 0x00000000, FALSE),
37 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 38 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 39 TRUE, 0xffffffff, 0xffffffff, FALSE),
40 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 41 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 42 TRUE, 0xffffffff, 0xffffffff, TRUE),
43 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 44 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 45 TRUE, 0xffffffff, 0xffffffff, FALSE),
46 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 47 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 48 TRUE, 0xffffffff, 0xffffffff, TRUE),
49 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 50 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 51 TRUE, 0xffffffff, 0xffffffff, FALSE),
52 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 53 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 54 TRUE, 0xffffffff, 0xffffffff, FALSE),
55 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 56 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 57 TRUE, 0xffffffff, 0xffffffff, FALSE),
58 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 59 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 60 TRUE, 0xffffffff, 0xffffffff, FALSE),
61 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 62 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 63 TRUE, 0xffffffff, 0xffffffff, FALSE),
64 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 65 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 66 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 67
dc47f327
AM		 68 /* We have a gap in the reloc numbers here.
69 R_386_standard counts the number up to this point, and
70 R_386_ext_offset is the value to subtract from a reloc type of
71 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 72#define R_386_standard (R_386_GOTPC + 1)
73#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 74
37e55690 75 /* These relocs are a GNU extension. */
b34976b6 76 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 77 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 78 TRUE, 0xffffffff, 0xffffffff, FALSE),
79 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 80 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 81 TRUE, 0xffffffff, 0xffffffff, FALSE),
82 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 83 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 84 TRUE, 0xffffffff, 0xffffffff, FALSE),
85 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 86 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 87 TRUE, 0xffffffff, 0xffffffff, FALSE),
88 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 89 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 90 TRUE, 0xffffffff, 0xffffffff, FALSE),
91 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 92 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 93 TRUE, 0xffffffff, 0xffffffff, FALSE),
94 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 95 bfd_elf_generic_reloc, "R_386_16",
b34976b6 96 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 97 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 98 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 99 TRUE, 0xffff, 0xffff, TRUE),
100 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 101 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 102 TRUE, 0xff, 0xff, FALSE),
103 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 104 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 105 TRUE, 0xff, 0xff, TRUE),
dc47f327 106
55fd94b0
AM		 107#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
108#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 109 /* These are common with Solaris TLS implementation. */
b34976b6 110 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 111 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 112 TRUE, 0xffffffff, 0xffffffff, FALSE),
113 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 114 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 115 TRUE, 0xffffffff, 0xffffffff, FALSE),
116 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 117 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 118 TRUE, 0xffffffff, 0xffffffff, FALSE),
119 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 120 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 121 TRUE, 0xffffffff, 0xffffffff, FALSE),
122 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 123 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 124 TRUE, 0xffffffff, 0xffffffff, FALSE),
125 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 126 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 127 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L		 128 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
129 bfd_elf_generic_reloc, "R_386_SIZE32",
130 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 131 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
133 TRUE, 0xffffffff, 0xffffffff, FALSE),
134 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
135 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
136 FALSE, 0, 0, FALSE),
137 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_386_TLS_DESC",
139 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 140 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_386_IRELATIVE",
142 TRUE, 0xffffffff, 0xffffffff, FALSE),
02a86693
L		 143 HOWTO(R_386_GOT32X, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_386_GOT32X",
145 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 146
147 /* Another gap. */
02a86693 148#define R_386_ext2 (R_386_GOT32X + 1 - R_386_tls_offset)
c74be520 149#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2)
252b5132
RH		 150
151/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 152 HOWTO (R_386_GNU_VTINHERIT, /* type */
153 0, /* rightshift */
154 2, /* size (0 = byte, 1 = short, 2 = long) */
155 0, /* bitsize */
b34976b6 156 FALSE, /* pc_relative */
252b5132
RH		 157 0, /* bitpos */
158 complain_overflow_dont, /* complain_on_overflow */
159 NULL, /* special_function */
160 "R_386_GNU_VTINHERIT", /* name */
b34976b6 161 FALSE, /* partial_inplace */
252b5132
RH		 162 0, /* src_mask */
163 0, /* dst_mask */
b34976b6 164 FALSE), /* pcrel_offset */
252b5132
RH		 165
166/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 167 HOWTO (R_386_GNU_VTENTRY, /* type */
168 0, /* rightshift */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
170 0, /* bitsize */
b34976b6 171 FALSE, /* pc_relative */
252b5132
RH		 172 0, /* bitpos */
173 complain_overflow_dont, /* complain_on_overflow */
174 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
175 "R_386_GNU_VTENTRY", /* name */
b34976b6 176 FALSE, /* partial_inplace */
252b5132
RH		 177 0, /* src_mask */
178 0, /* dst_mask */
b34976b6 179 FALSE) /* pcrel_offset */
dc47f327 180
55fd94b0 181#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 182
183};
184
daf1c414
L		 185#define X86_PCREL_TYPE_P(TYPE) ((TYPE) == R_386_PC32)
186
aebcc8ff
L		 187#define X86_SIZE_TYPE_P(TYPE) ((TYPE) == R_386_SIZE32)
188
252b5132 189#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 190#define TRACE(str) \
191 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 192#else
193#define TRACE(str)
194#endif
195
196static reloc_howto_type *
f3185997 197elf_i386_reloc_type_lookup (bfd *abfd,
55fd94b0 198 bfd_reloc_code_real_type code)
252b5132
RH		 199{
200 switch (code)
201 {
202 case BFD_RELOC_NONE:
203 TRACE ("BFD_RELOC_NONE");
55fd94b0 204 return &elf_howto_table[R_386_NONE];
252b5132
RH		 205
206 case BFD_RELOC_32:
207 TRACE ("BFD_RELOC_32");
55fd94b0 208 return &elf_howto_table[R_386_32];
252b5132
RH		 209
210 case BFD_RELOC_CTOR:
211 TRACE ("BFD_RELOC_CTOR");
55fd94b0 212 return &elf_howto_table[R_386_32];
252b5132
RH		 213
214 case BFD_RELOC_32_PCREL:
215 TRACE ("BFD_RELOC_PC32");
55fd94b0 216 return &elf_howto_table[R_386_PC32];
252b5132
RH		 217
218 case BFD_RELOC_386_GOT32:
219 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 220 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 221
222 case BFD_RELOC_386_PLT32:
223 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 224 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 225
226 case BFD_RELOC_386_COPY:
227 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 228 return &elf_howto_table[R_386_COPY];
252b5132
RH		 229
230 case BFD_RELOC_386_GLOB_DAT:
231 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 232 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 233
234 case BFD_RELOC_386_JUMP_SLOT:
235 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 236 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 237
238 case BFD_RELOC_386_RELATIVE:
239 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 240 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 241
242 case BFD_RELOC_386_GOTOFF:
243 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 244 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 245
246 case BFD_RELOC_386_GOTPC:
247 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 248 return &elf_howto_table[R_386_GOTPC];
252b5132 249
37e55690
JJ		 250 /* These relocs are a GNU extension. */
251 case BFD_RELOC_386_TLS_TPOFF:
252 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 253 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 254
255 case BFD_RELOC_386_TLS_IE:
256 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 257 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 258
259 case BFD_RELOC_386_TLS_GOTIE:
260 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 261 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 262
13ae64f3
JJ		 263 case BFD_RELOC_386_TLS_LE:
264 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 265 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 266
267 case BFD_RELOC_386_TLS_GD:
268 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 269 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 270
271 case BFD_RELOC_386_TLS_LDM:
272 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 273 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 274
252b5132
RH		 275 case BFD_RELOC_16:
276 TRACE ("BFD_RELOC_16");
55fd94b0 277 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 278
279 case BFD_RELOC_16_PCREL:
280 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 281 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 282
283 case BFD_RELOC_8:
284 TRACE ("BFD_RELOC_8");
55fd94b0 285 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 286
287 case BFD_RELOC_8_PCREL:
288 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 289 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 290
13ae64f3
JJ		 291 /* Common with Sun TLS implementation. */
292 case BFD_RELOC_386_TLS_LDO_32:
293 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 294 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 295
296 case BFD_RELOC_386_TLS_IE_32:
297 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 298 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 299
300 case BFD_RELOC_386_TLS_LE_32:
301 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 302 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 303
304 case BFD_RELOC_386_TLS_DTPMOD32:
305 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 306 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 307
308 case BFD_RELOC_386_TLS_DTPOFF32:
309 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 310 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 311
312 case BFD_RELOC_386_TLS_TPOFF32:
313 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 314 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 315
1788fc08
L		 316 case BFD_RELOC_SIZE32:
317 TRACE ("BFD_RELOC_SIZE32");
318 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
319
67a4f2b7
AO		 320 case BFD_RELOC_386_TLS_GOTDESC:
321 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
322 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
323
324 case BFD_RELOC_386_TLS_DESC_CALL:
325 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
326 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
327
328 case BFD_RELOC_386_TLS_DESC:
329 TRACE ("BFD_RELOC_386_TLS_DESC");
330 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
331
cbe950e9
L		 332 case BFD_RELOC_386_IRELATIVE:
333 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 334 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 335
02a86693
L		 336 case BFD_RELOC_386_GOT32X:
337 TRACE ("BFD_RELOC_386_GOT32X");
338 return &elf_howto_table[R_386_GOT32X - R_386_tls_offset];
339
252b5132
RH		 340 case BFD_RELOC_VTABLE_INHERIT:
341 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 342 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 343
344 case BFD_RELOC_VTABLE_ENTRY:
345 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 346 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 347
348 default:
f3185997
NC		 349 TRACE ("Unknown");
350 /* xgettext:c-format */
e8f5af78 351 _bfd_error_handler (_("%pB: unsupported relocation type: %#x"),
f3185997
NC		 352 abfd, (int) code);
353 bfd_set_error (bfd_error_bad_value);
354 return NULL;
252b5132 355 }
252b5132
RH		 356}
357
157090f7
AM		 358static reloc_howto_type *
359elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
360 const char *r_name)
361{
362 unsigned int i;
363
364 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
365 if (elf_howto_table[i].name != NULL
366 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
367 return &elf_howto_table[i];
368
369 return NULL;
370}
371
142411ca 372static reloc_howto_type *
f3185997 373elf_i386_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, unsigned r_type)
252b5132 374{
dc47f327
AM		 375 unsigned int indx;
376
377 if ((indx = r_type) >= R_386_standard
378 && ((indx = r_type - R_386_ext_offset) - R_386_standard
379 >= R_386_ext - R_386_standard)
13ae64f3 380 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520
L		 381 >= R_386_ext2 - R_386_ext)
382 && ((indx = r_type - R_386_vt_offset) - R_386_ext2
383 >= R_386_vt - R_386_ext2))
f3185997 384 return NULL;
06614111
NC		 385 /* PR 17512: file: 0f67f69d. */
386 if (elf_howto_table [indx].type != r_type)
387 return NULL;
142411ca
L		 388 return &elf_howto_table[indx];
389}
390
f3185997
NC		 391static bfd_boolean
392elf_i386_info_to_howto_rel (bfd *abfd,
142411ca
L		 393 arelent *cache_ptr,
394 Elf_Internal_Rela *dst)
395{
396 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
f3185997
NC		 397
398 if ((cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type)) == NULL)
399 {
400 /* xgettext:c-format */
401 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
402 abfd, r_type);
403 bfd_set_error (bfd_error_bad_value);
404 return FALSE;
405 }
406
407 return TRUE;
252b5132
RH		 408}
409
410/* Return whether a symbol name implies a local label. The UnixWare
411 2.1 cc generates temporary symbols that start with .X, so we
412 recognize them here. FIXME: do other SVR4 compilers also use .X?.
413 If so, we should move the .X recognition into
414 _bfd_elf_is_local_label_name. */
415
b34976b6 416static bfd_boolean
55fd94b0 417elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 418{
419 if (name[0] == '.' && name[1] == 'X')
b34976b6 420 return TRUE;
252b5132
RH		 421
422 return _bfd_elf_is_local_label_name (abfd, name);
423}
424\f
38701953 425/* Support for core dump NOTE sections. */
61adc1a4 426
b34976b6 427static bfd_boolean
55fd94b0 428elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 429{
430 int offset;
eea6121a 431 size_t size;
38701953 432
61adc1a4 433 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 434 {
61adc1a4
NC		 435 int pr_version = bfd_get_32 (abfd, note->descdata);
436
437 if (pr_version != 1)
07d6d2b8 438 return FALSE;
61adc1a4
NC		 439
440 /* pr_cursig */
228e534f 441 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 442
443 /* pr_pid */
228e534f 444 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 445
446 /* pr_reg */
447 offset = 28;
eea6121a 448 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 449 }
450 else
451 {
452 switch (note->descsz)
453 {
454 default:
455 return FALSE;
38701953 456
61adc1a4
NC		 457 case 144: /* Linux/i386 */
458 /* pr_cursig */
228e534f 459 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 460
61adc1a4 461 /* pr_pid */
228e534f 462 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 463
61adc1a4
NC		 464 /* pr_reg */
465 offset = 72;
eea6121a 466 size = 68;
38701953 467
61adc1a4
NC		 468 break;
469 }
38701953
AM		 470 }
471
472 /* Make a ".reg/999" section. */
473 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 474 size, note->descpos + offset);
38701953
AM		 475}
476
b34976b6 477static bfd_boolean
55fd94b0 478elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 479{
61adc1a4 480 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 481 {
61adc1a4
NC		 482 int pr_version = bfd_get_32 (abfd, note->descdata);
483
484 if (pr_version != 1)
b34976b6 485 return FALSE;
38701953 486
228e534f 487 elf_tdata (abfd)->core->program
61adc1a4 488 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 489 elf_tdata (abfd)->core->command
61adc1a4
NC		 490 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
491 }
492 else
493 {
494 switch (note->descsz)
495 {
496 default:
497 return FALSE;
498
499 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 500 elf_tdata (abfd)->core->pid
261b8d08 501 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 502 elf_tdata (abfd)->core->program
61adc1a4 503 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 504 elf_tdata (abfd)->core->command
61adc1a4
NC		 505 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
506 }
38701953
AM		 507 }
508
509 /* Note that for some reason, a spurious space is tacked
510 onto the end of the args in some (at least one anyway)
511 implementations, so strip it off if it exists. */
38701953 512 {
228e534f 513 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 514 int n = strlen (command);
515
516 if (0 < n && command[n - 1] == ' ')
517 command[n - 1] = '\0';
518 }
519
b34976b6 520 return TRUE;
38701953
AM		 521}
522\f
523/* Functions for the i386 ELF linker.
524
525 In order to gain some understanding of code in this file without
526 knowing all the intricate details of the linker, note the
527 following:
528
529 Functions named elf_i386_* are called by external routines, other
530 functions are only called locally. elf_i386_* functions appear
531 in this file more or less in the order in which they are called
532 from external routines. eg. elf_i386_check_relocs is called
533 early in the link process, elf_i386_finish_dynamic_sections is
534 one of the last functions. */
535
f604c2a2 536/* The size in bytes of an entry in the lazy procedure linkage table. */
252b5132 537
f604c2a2 538#define LAZY_PLT_ENTRY_SIZE 16
252b5132 539
f604c2a2
L		 540/* The size in bytes of an entry in the non-lazy procedure linkage
541 table. */
252b5132 542
f604c2a2
L		 543#define NON_LAZY_PLT_ENTRY_SIZE 8
544
545/* The first entry in an absolute lazy procedure linkage table looks
546 like this. See the SVR4 ABI i386 supplement to see how this works.
547 Will be padded to LAZY_PLT_ENTRY_SIZE with lazy_plt->plt0_pad_byte. */
548
549static const bfd_byte elf_i386_lazy_plt0_entry[12] =
252b5132
RH		 550{
551 0xff, 0x35, /* pushl contents of address */
552 0, 0, 0, 0, /* replaced with address of .got + 4. */
553 0xff, 0x25, /* jmp indirect */
eac338cf 554 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 555};
556
f604c2a2
L		 557/* Subsequent entries in an absolute lazy procedure linkage table look
558 like this. */
252b5132 559
f604c2a2 560static const bfd_byte elf_i386_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
252b5132
RH		 561{
562 0xff, 0x25, /* jmp indirect */
563 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
564 0x68, /* pushl immediate */
565 0, 0, 0, 0, /* replaced with offset into relocation table. */
566 0xe9, /* jmp relative */
567 0, 0, 0, 0 /* replaced with offset to start of .plt. */
568};
569
f604c2a2
L		 570/* The first entry in a PIC lazy procedure linkage table look like
571 this. Will be padded to LAZY_PLT_ENTRY_SIZE with
572 lazy_plt->plt0_pad_byte. */
252b5132 573
f604c2a2 574static const bfd_byte elf_i386_pic_lazy_plt0_entry[12] =
252b5132
RH		 575{
576 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 577 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 578};
579
f604c2a2
L		 580/* Subsequent entries in a PIC lazy procedure linkage table look like
581 this. */
252b5132 582
f604c2a2 583static const bfd_byte elf_i386_pic_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
252b5132
RH		 584{
585 0xff, 0xa3, /* jmp *offset(%ebx) */
586 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
587 0x68, /* pushl immediate */
588 0, 0, 0, 0, /* replaced with offset into relocation table. */
589 0xe9, /* jmp relative */
590 0, 0, 0, 0 /* replaced with offset to start of .plt. */
591};
592
f604c2a2 593/* Entries in the non-lazy procedure linkage table look like this. */
dd7e64d4 594
f604c2a2 595static const bfd_byte elf_i386_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
dd7e64d4
L		 596{
597 0xff, 0x25, /* jmp indirect */
598 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
599 0x66, 0x90 /* xchg %ax,%ax */
600};
601
f604c2a2
L		 602/* Entries in the PIC non-lazy procedure linkage table look like
603 this. */
dd7e64d4 604
f604c2a2 605static const bfd_byte elf_i386_pic_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
dd7e64d4
L		 606{
607 0xff, 0xa3, /* jmp *offset(%ebx) */
608 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
609 0x66, 0x90 /* xchg %ax,%ax */
610};
611
ee2fdd6f
L		 612/* The first entry in an absolute IBT-enabled lazy procedure linkage
613 table looks like this. */
614
615static const bfd_byte elf_i386_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
616{
07d6d2b8
AM		 617 0xff, 0x35, 0, 0, 0, 0, /* pushl GOT[1] */
618 0xff, 0x25, 0, 0, 0, 0, /* jmp *GOT[2] */
619 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
ee2fdd6f
L		 620};
621
622/* Subsequent entries for an absolute IBT-enabled lazy procedure linkage
623 table look like this. Subsequent entries for a PIC IBT-enabled lazy
624 procedure linkage table are the same. */
625
626static const bfd_byte elf_i386_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
627{
07d6d2b8
AM		 628 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
629 0x68, 0, 0, 0, 0, /* pushl immediate */
630 0xe9, 0, 0, 0, 0, /* jmp relative */
631 0x66, 0x90 /* xchg %ax,%ax */
ee2fdd6f
L		 632};
633
634/* The first entry in a PIC IBT-enabled lazy procedure linkage table
635 look like. */
636
637static const bfd_byte elf_i386_pic_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
638{
639 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
07d6d2b8
AM		 640 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */
641 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
ee2fdd6f
L		 642};
643
644/* Entries for branches with IBT-enabled in the absolute non-lazey
645 procedure linkage table look like this. They have the same size
646 as the lazy PLT entry. */
647
648static const bfd_byte elf_i386_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
649{
07d6d2b8 650 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
ee2fdd6f
L		 651 0xff, 0x25, 0, 0, 0, 0, /* jmp *name@GOT */
652 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
653};
654
655/* Entries for branches with IBT-enabled in the PIC non-lazey procedure
656 linkage table look like this. They have the same size as the lazy
657 PLT entry. */
658
659static const bfd_byte elf_i386_pic_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
660{
07d6d2b8 661 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
ee2fdd6f
L		 662 0xff, 0xa3, 0, 0, 0, 0, /* jmp *name@GOT(%ebx) */
663 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
664};
665
f604c2a2 666/* .eh_frame covering the lazy .plt section. */
e41b3a13 667
f604c2a2 668static const bfd_byte elf_i386_eh_frame_lazy_plt[] =
e41b3a13 669{
e41b3a13
JJ		 670 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
671 0, 0, 0, 0, /* CIE ID */
672 1, /* CIE version */
673 'z', 'R', 0, /* Augmentation string */
674 1, /* Code alignment factor */
675 0x7c, /* Data alignment factor */
676 8, /* Return address column */
677 1, /* Augmentation size */
678 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
679 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
680 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
681 DW_CFA_nop, DW_CFA_nop,
682
683 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
684 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
685 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
686 0, 0, 0, 0, /* .plt size goes here */
687 0, /* Augmentation size */
688 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
689 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
690 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
691 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
692 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
693 11, /* Block length */
694 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
695 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
696 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 697 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 698 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
699};
700
ee2fdd6f
L		 701/* .eh_frame covering the lazy .plt section with IBT-enabled. */
702
703static const bfd_byte elf_i386_eh_frame_lazy_ibt_plt[] =
704{
705 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
706 0, 0, 0, 0, /* CIE ID */
707 1, /* CIE version */
708 'z', 'R', 0, /* Augmentation string */
709 1, /* Code alignment factor */
710 0x7c, /* Data alignment factor */
711 8, /* Return address column */
712 1, /* Augmentation size */
713 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
714 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
715 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
716 DW_CFA_nop, DW_CFA_nop,
717
718 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
719 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
720 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
721 0, 0, 0, 0, /* .plt size goes here */
722 0, /* Augmentation size */
723 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
724 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
725 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
726 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
727 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
728 11, /* Block length */
729 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
730 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
731 DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge,
732 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
733 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
734};
735
f604c2a2 736/* .eh_frame covering the non-lazy .plt section. */
fff53dae 737
f604c2a2 738static const bfd_byte elf_i386_eh_frame_non_lazy_plt[] =
fff53dae
L		 739{
740#define PLT_GOT_FDE_LENGTH 16
741 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
742 0, 0, 0, 0, /* CIE ID */
743 1, /* CIE version */
744 'z', 'R', 0, /* Augmentation string */
745 1, /* Code alignment factor */
746 0x7c, /* Data alignment factor */
747 8, /* Return address column */
748 1, /* Augmentation size */
749 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
750 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
751 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
752 DW_CFA_nop, DW_CFA_nop,
753
754 PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
755 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
f604c2a2
L		 756 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
757 0, 0, 0, 0, /* non-lazy .plt size goes here */
fff53dae
L		 758 0, /* Augmentation size */
759 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
760};
761
25e762b9 762/* These are the standard parameters. */
765e526c 763static const struct elf_x86_lazy_plt_layout elf_i386_lazy_plt =
25e762b9 764 {
07d6d2b8
AM		 765 elf_i386_lazy_plt0_entry, /* plt0_entry */
766 sizeof (elf_i386_lazy_plt0_entry), /* plt0_entry_size */
767 elf_i386_lazy_plt_entry, /* plt_entry */
768 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
769 2, /* plt0_got1_offset */
770 8, /* plt0_got2_offset */
771 0, /* plt0_got2_insn_end */
772 2, /* plt_got_offset */
773 7, /* plt_reloc_offset */
774 12, /* plt_plt_offset */
775 0, /* plt_got_insn_size */
776 0, /* plt_plt_insn_end */
777 6, /* plt_lazy_offset */
778 elf_i386_pic_lazy_plt0_entry, /* pic_plt0_entry */
779 elf_i386_pic_lazy_plt_entry, /* pic_plt_entry */
780 elf_i386_eh_frame_lazy_plt, /* eh_frame_plt */
f604c2a2
L		 781 sizeof (elf_i386_eh_frame_lazy_plt) /* eh_frame_plt_size */
782 };
783
765e526c 784static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_plt =
f604c2a2 785 {
07d6d2b8
AM		 786 elf_i386_non_lazy_plt_entry, /* plt_entry */
787 elf_i386_pic_non_lazy_plt_entry, /* pic_plt_entry */
788 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
789 2, /* plt_got_offset */
790 0, /* plt_got_insn_size */
791 elf_i386_eh_frame_non_lazy_plt, /* eh_frame_plt */
f604c2a2 792 sizeof (elf_i386_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
25e762b9 793 };
ee2fdd6f 794
765e526c 795static const struct elf_x86_lazy_plt_layout elf_i386_lazy_ibt_plt =
ee2fdd6f 796 {
07d6d2b8 797 elf_i386_lazy_ibt_plt0_entry, /* plt0_entry */
ee2fdd6f 798 sizeof (elf_i386_lazy_ibt_plt0_entry), /* plt0_entry_size */
07d6d2b8
AM		 799 elf_i386_lazy_ibt_plt_entry, /* plt_entry */
800 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
801 2, /* plt0_got1_offset */
802 8, /* plt0_got2_offset */
803 0, /* plt0_got2_insn_end */
804 4+2, /* plt_got_offset */
805 4+1, /* plt_reloc_offset */
806 4+6, /* plt_plt_offset */
807 0, /* plt_got_insn_size */
808 0, /* plt_plt_insn_end */
809 0, /* plt_lazy_offset */
810 elf_i386_pic_lazy_ibt_plt0_entry, /* pic_plt0_entry */
811 elf_i386_lazy_ibt_plt_entry, /* pic_plt_entry */
812 elf_i386_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
ee2fdd6f
L		 813 sizeof (elf_i386_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
814 };
815
765e526c 816static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_ibt_plt =
ee2fdd6f 817 {
07d6d2b8 818 elf_i386_non_lazy_ibt_plt_entry, /* plt_entry */
ee2fdd6f 819 elf_i386_pic_non_lazy_ibt_plt_entry,/* pic_plt_entry */
07d6d2b8
AM		 820 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
821 4+2, /* plt_got_offset */
822 0, /* plt_got_insn_size */
823 elf_i386_eh_frame_non_lazy_plt, /* eh_frame_plt */
ee2fdd6f
L		 824 sizeof (elf_i386_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
825 };
25e762b9
RM		 826\f
827
eac338cf
PB		 828/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
829 for the PLTResolve stub and then for each PLT entry. */
830#define PLTRESOLVE_RELOCS_SHLIB 0
831#define PLTRESOLVE_RELOCS 2
832#define PLT_NON_JUMP_SLOT_RELOCS 2
833
23209a78 834/* These are the standard parameters. */
851b6fa1 835static const struct elf_x86_backend_data elf_i386_arch_bed =
23209a78 836 {
07d6d2b8 837 is_normal /* os */
23209a78
RM		 838 };
839
840#define elf_backend_arch_data &elf_i386_arch_bed
841
142411ca
L		 842/* Return TRUE if the TLS access code sequence support transition
843 from R_TYPE. */
844
845static bfd_boolean
bedfd056 846elf_i386_check_tls_transition (asection *sec,
142411ca
L		 847 bfd_byte *contents,
848 Elf_Internal_Shdr *symtab_hdr,
849 struct elf_link_hash_entry **sym_hashes,
850 unsigned int r_type,
851 const Elf_Internal_Rela *rel,
852 const Elf_Internal_Rela *relend)
13ae64f3 853{
6eaa7fb5 854 unsigned int val, type, reg;
142411ca
L		 855 unsigned long r_symndx;
856 struct elf_link_hash_entry *h;
857 bfd_vma offset;
6eaa7fb5 858 bfd_byte *call;
1d4af308 859 bfd_boolean indirect_call;
142411ca 860
142411ca 861 offset = rel->r_offset;
13ae64f3 862 switch (r_type)
142411ca
L		 863 {
864 case R_386_TLS_GD:
865 case R_386_TLS_LDM:
866 if (offset < 2 || (rel + 1) >= relend)
867 return FALSE;
868
6eaa7fb5
L		 869 indirect_call = FALSE;
870 call = contents + offset + 4;
871 val = *(call - 5);
872 type = *(call - 6);
142411ca
L		 873 if (r_type == R_386_TLS_GD)
874 {
09e8c3bf 875 /* Check transition from GD access model. Only
6eaa7fb5
L		 876 leal foo@tlsgd(,%ebx,1), %eax
877 call ___tls_get_addr@PLT
878 or
879 leal foo@tlsgd(%ebx) %eax
880 call ___tls_get_addr@PLT
881 nop
882 or
883 leal foo@tlsgd(%reg), %eax
884 call *___tls_get_addr@GOT(%reg)
885 which may be converted to
886 addr32 call ___tls_get_addr
142411ca 887 can transit to different access model. */
6eaa7fb5
L		 888 if ((offset + 10) > sec->size
889 || (type != 0x8d && type != 0x04))
142411ca
L		 890 return FALSE;
891
142411ca
L		 892 if (type == 0x04)
893 {
6eaa7fb5
L		 894 /* leal foo@tlsgd(,%ebx,1), %eax
895 call ___tls_get_addr@PLT */
142411ca
L		 896 if (offset < 3)
897 return FALSE;
898
6eaa7fb5
L		 899 if (*(call - 7) != 0x8d
900 || val != 0x1d
901 || call[0] != 0xe8)
142411ca
L		 902 return FALSE;
903 }
904 else
905 {
6eaa7fb5
L		 906 /* This must be
907 leal foo@tlsgd(%ebx), %eax
908 call ___tls_get_addr@PLT
909 nop
910 or
911 leal foo@tlsgd(%reg), %eax
912 call *___tls_get_addr@GOT(%reg)
913 which may be converted to
914 addr32 call ___tls_get_addr
915
916 %eax can't be used as the GOT base register since it
917 is used to pass parameter to ___tls_get_addr. */
918 reg = val & 7;
919 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca
L		 920 return FALSE;
921
6eaa7fb5
L		 922 indirect_call = call[0] == 0xff;
923 if (!(reg == 3 && call[0] == 0xe8 && call[5] == 0x90)
924 && !(call[0] == 0x67 && call[1] == 0xe8)
925 && !(indirect_call
926 && (call[1] & 0xf8) == 0x90
927 && (call[1] & 0x7) == reg))
142411ca
L		 928 return FALSE;
929 }
930 }
931 else
932 {
933 /* Check transition from LD access model. Only
6eaa7fb5
L		 934 leal foo@tlsldm(%ebx), %eax
935 call ___tls_get_addr@PLT
936 or
937 leal foo@tlsldm(%reg), %eax
938 call *___tls_get_addr@GOT(%reg)
939 which may be converted to
940 addr32 call ___tls_get_addr
142411ca
L		 941 can transit to different access model. */
942 if (type != 0x8d || (offset + 9) > sec->size)
943 return FALSE;
944
6eaa7fb5
L		 945 /* %eax can't be used as the GOT base register since it is
946 used to pass parameter to ___tls_get_addr. */
947 reg = val & 7;
948 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca 949 return FALSE;
142411ca 950
6eaa7fb5
L		 951 indirect_call = call[0] == 0xff;
952 if (!(reg == 3 && call[0] == 0xe8)
953 && !(call[0] == 0x67 && call[1] == 0xe8)
954 && !(indirect_call
955 && (call[1] & 0xf8) == 0x90
956 && (call[1] & 0x7) == reg))
957 return FALSE;
958 }
142411ca
L		 959
960 r_symndx = ELF32_R_SYM (rel[1].r_info);
961 if (r_symndx < symtab_hdr->sh_info)
962 return FALSE;
963
964 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1d4af308 965 if (h == NULL
0afcef53 966 || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
6eaa7fb5
L		 967 return FALSE;
968 else if (indirect_call)
969 return (ELF32_R_TYPE (rel[1].r_info) == R_386_GOT32X);
970 else
971 return (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
972 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
142411ca
L		 973
974 case R_386_TLS_IE:
975 /* Check transition from IE access model:
976 movl foo@indntpoff(%rip), %eax
977 movl foo@indntpoff(%rip), %reg
978 addl foo@indntpoff(%rip), %reg
979 */
980
981 if (offset < 1 || (offset + 4) > sec->size)
982 return FALSE;
983
984 /* Check "movl foo@tpoff(%rip), %eax" first. */
985 val = bfd_get_8 (abfd, contents + offset - 1);
986 if (val == 0xa1)
987 return TRUE;
988
989 if (offset < 2)
990 return FALSE;
991
992 /* Check movl|addl foo@tpoff(%rip), %reg. */
993 type = bfd_get_8 (abfd, contents + offset - 2);
994 return ((type == 0x8b || type == 0x03)
995 && (val & 0xc7) == 0x05);
996
997 case R_386_TLS_GOTIE:
998 case R_386_TLS_IE_32:
999 /* Check transition from {IE_32,GOTIE} access model:
1000 subl foo@{tpoff,gontoff}(%reg1), %reg2
1001 movl foo@{tpoff,gontoff}(%reg1), %reg2
1002 addl foo@{tpoff,gontoff}(%reg1), %reg2
1003 */
1004
1005 if (offset < 2 || (offset + 4) > sec->size)
1006 return FALSE;
1007
1008 val = bfd_get_8 (abfd, contents + offset - 1);
1009 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1010 return FALSE;
1011
1012 type = bfd_get_8 (abfd, contents + offset - 2);
1013 return type == 0x8b || type == 0x2b || type == 0x03;
1014
1015 case R_386_TLS_GOTDESC:
1016 /* Check transition from GDesc access model:
1017 leal x@tlsdesc(%ebx), %eax
1018
1019 Make sure it's a leal adding ebx to a 32-bit offset
1020 into any register, although it's probably almost always
1021 going to be eax. */
1022
1023 if (offset < 2 || (offset + 4) > sec->size)
1024 return FALSE;
1025
1026 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1027 return FALSE;
1028
1029 val = bfd_get_8 (abfd, contents + offset - 1);
1030 return (val & 0xc7) == 0x83;
1031
1032 case R_386_TLS_DESC_CALL:
1033 /* Check transition from GDesc access model:
6eaa7fb5 1034 call *x@tlsdesc(%eax)
142411ca
L		 1035 */
1036 if (offset + 2 <= sec->size)
1037 {
6eaa7fb5
L		 1038 /* Make sure that it's a call *x@tlsdesc(%eax). */
1039 call = contents + offset;
1040 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1041 }
1042
1043 return FALSE;
1044
1045 default:
1046 abort ();
1047 }
1048}
1049
1050/* Return TRUE if the TLS access transition is OK or no transition
1051 will be performed. Update R_TYPE if there is a transition. */
1052
1053static bfd_boolean
1054elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1055 asection *sec, bfd_byte *contents,
1056 Elf_Internal_Shdr *symtab_hdr,
1057 struct elf_link_hash_entry **sym_hashes,
1058 unsigned int *r_type, int tls_type,
1059 const Elf_Internal_Rela *rel,
1060 const Elf_Internal_Rela *relend,
4c544807 1061 struct elf_link_hash_entry *h,
bedfd056
L		 1062 unsigned long r_symndx,
1063 bfd_boolean from_relocate_section)
142411ca
L		 1064{
1065 unsigned int from_type = *r_type;
1066 unsigned int to_type = from_type;
1067 bfd_boolean check = TRUE;
1068
bb1cb422
L		 1069 /* Skip TLS transition for functions. */
1070 if (h != NULL
1071 && (h->type == STT_FUNC
1072 || h->type == STT_GNU_IFUNC))
1073 return TRUE;
1074
142411ca 1075 switch (from_type)
13ae64f3
JJ		 1076 {
1077 case R_386_TLS_GD:
67a4f2b7
AO		 1078 case R_386_TLS_GOTDESC:
1079 case R_386_TLS_DESC_CALL:
13ae64f3 1080 case R_386_TLS_IE_32:
37e55690
JJ		 1081 case R_386_TLS_IE:
1082 case R_386_TLS_GOTIE:
0e1862bb 1083 if (bfd_link_executable (info))
142411ca
L		 1084 {
1085 if (h == NULL)
1086 to_type = R_386_TLS_LE_32;
1087 else if (from_type != R_386_TLS_IE
1088 && from_type != R_386_TLS_GOTIE)
1089 to_type = R_386_TLS_IE_32;
1090 }
1091
bedfd056
L		 1092 /* When we are called from elf_i386_relocate_section, there may
1093 be additional transitions based on TLS_TYPE. */
1094 if (from_relocate_section)
142411ca
L		 1095 {
1096 unsigned int new_to_type = to_type;
1097
51537393 1098 if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type))
142411ca
L		 1099 new_to_type = R_386_TLS_LE_32;
1100
1101 if (to_type == R_386_TLS_GD
1102 || to_type == R_386_TLS_GOTDESC
1103 || to_type == R_386_TLS_DESC_CALL)
1104 {
1105 if (tls_type == GOT_TLS_IE_POS)
1106 new_to_type = R_386_TLS_GOTIE;
1107 else if (tls_type & GOT_TLS_IE)
1108 new_to_type = R_386_TLS_IE_32;
1109 }
1110
1111 /* We checked the transition before when we were called from
1112 elf_i386_check_relocs. We only want to check the new
1113 transition which hasn't been checked before. */
1114 check = new_to_type != to_type && from_type == to_type;
1115 to_type = new_to_type;
1116 }
1117
1118 break;
1119
13ae64f3 1120 case R_386_TLS_LDM:
0e1862bb 1121 if (bfd_link_executable (info))
142411ca
L		 1122 to_type = R_386_TLS_LE_32;
1123 break;
1124
1125 default:
1126 return TRUE;
1127 }
1128
1129 /* Return TRUE if there is no transition. */
1130 if (from_type == to_type)
1131 return TRUE;
1132
1133 /* Check if the transition can be performed. */
1134 if (check
bedfd056 1135 && ! elf_i386_check_tls_transition (sec, contents,
142411ca
L		 1136 symtab_hdr, sym_hashes,
1137 from_type, rel, relend))
1138 {
2f629d23 1139 reloc_howto_type *from, *to;
4c544807 1140 const char *name;
142411ca
L		 1141
1142 from = elf_i386_rtype_to_howto (abfd, from_type);
1143 to = elf_i386_rtype_to_howto (abfd, to_type);
1144
4c544807
L		 1145 if (h)
1146 name = h->root.root.string;
1147 else
1148 {
0afcef53 1149 struct elf_x86_link_hash_table *htab;
4dfe6ac6 1150
0afcef53 1151 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 1152 if (htab == NULL)
1153 name = "*unknown*";
1154 else
1155 {
1156 Elf_Internal_Sym *isym;
1157
1158 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1159 abfd, r_symndx);
1160 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1161 }
4c544807
L		 1162 }
1163
4eca0228 1164 _bfd_error_handler
695344c0 1165 /* xgettext:c-format */
2dcf00ce
AM		 1166 (_("%pB: TLS transition from %s to %s against `%s'"
1167 " at %#" PRIx64 " in section `%pA' failed"),
c08bb8dd 1168 abfd, from->name, to->name, name,
2dcf00ce 1169 (uint64_t) rel->r_offset, sec);
142411ca
L		 1170 bfd_set_error (bfd_error_bad_value);
1171 return FALSE;
13ae64f3
JJ		 1172 }
1173
142411ca
L		 1174 *r_type = to_type;
1175 return TRUE;
13ae64f3
JJ		 1176}
1177
c175a657
L		 1178/* With the local symbol, foo, we convert
1179 mov foo@GOT[(%reg1)], %reg2
1180 to
1181 lea foo[@GOTOFF(%reg1)], %reg2
1182 and convert
1183 call/jmp *foo@GOT[(%reg)]
1184 to
1185 nop call foo/jmp foo nop
1186 When PIC is false, convert
1187 test %reg1, foo@GOT[(%reg2)]
1188 to
1189 test $foo, %reg1
1190 and convert
1191 binop foo@GOT[(%reg1)], %reg2
1192 to
1193 binop $foo, %reg2
1194 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1195 instructions. */
1196
1197static
1198bfd_boolean
1199elf_i386_convert_load_reloc (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
1200 bfd_byte *contents,
6999821f 1201 unsigned int *r_type_p,
c175a657
L		 1202 Elf_Internal_Rela *irel,
1203 struct elf_link_hash_entry *h,
5e5e02ae 1204 bfd_boolean *converted,
c175a657
L		 1205 struct bfd_link_info *link_info)
1206{
0afcef53 1207 struct elf_x86_link_hash_table *htab;
c175a657
L		 1208 unsigned int opcode;
1209 unsigned int modrm;
1210 bfd_boolean baseless;
1211 Elf_Internal_Sym *isym;
1212 unsigned int addend;
1213 unsigned int nop;
1214 bfd_vma nop_offset;
1215 bfd_boolean is_pic;
1216 bfd_boolean to_reloc_32;
1217 unsigned int r_type;
1218 unsigned int r_symndx;
1219 bfd_vma roff = irel->r_offset;
0a27fed7
L		 1220 bfd_boolean local_ref;
1221 struct elf_x86_link_hash_entry *eh;
c175a657
L		 1222
1223 if (roff < 2)
1224 return TRUE;
1225
7d4d9709 1226 /* Addend for R_386_GOT32X relocations must be 0. */
c175a657
L		 1227 addend = bfd_get_32 (abfd, contents + roff);
1228 if (addend != 0)
1229 return TRUE;
1230
0afcef53 1231 htab = elf_x86_hash_table (link_info, I386_ELF_DATA);
c175a657
L		 1232 is_pic = bfd_link_pic (link_info);
1233
6999821f 1234 r_type = *r_type_p;
c175a657
L		 1235 r_symndx = ELF32_R_SYM (irel->r_info);
1236
1237 modrm = bfd_get_8 (abfd, contents + roff - 1);
1238 baseless = (modrm & 0xc7) == 0x5;
1239
7d4d9709 1240 if (baseless && is_pic)
c175a657
L		 1241 {
1242 /* For PIC, disallow R_386_GOT32X without a base register
7d4d9709 1243 since we don't know what the GOT base is. */
c175a657
L		 1244 const char *name;
1245
1246 if (h == NULL)
1247 {
1248 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
1249 r_symndx);
1250 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1251 }
1252 else
1253 name = h->root.root.string;
1254
4eca0228 1255 _bfd_error_handler
695344c0 1256 /* xgettext:c-format */
871b3ab2 1257 (_("%pB: direct GOT relocation R_386_GOT32X against `%s' without base"
63a5468a 1258 " register can not be used when making a shared object"),
c175a657
L		 1259 abfd, name);
1260 return FALSE;
1261 }
1262
1263 opcode = bfd_get_8 (abfd, contents + roff - 2);
1264
c175a657
L		 1265 /* Convert to R_386_32 if PIC is false or there is no base
1266 register. */
1267 to_reloc_32 = !is_pic || baseless;
1268
0a27fed7
L		 1269 eh = elf_x86_hash_entry (h);
1270
7d4d9709
L		 1271 /* Try to convert R_386_GOT32X. Get the symbol referred to by the
1272 reloc. */
c175a657
L		 1273 if (h == NULL)
1274 {
1275 if (opcode == 0x0ff)
1276 /* Convert "call/jmp *foo@GOT[(%reg)]". */
1277 goto convert_branch;
1278 else
1279 /* Convert "mov foo@GOT[(%reg1)], %reg2",
1280 "test %reg1, foo@GOT(%reg2)" and
1281 "binop foo@GOT[(%reg1)], %reg2". */
1282 goto convert_load;
1283 }
1284
0a27fed7
L		 1285 /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */
1286 local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h);
1287
c175a657
L		 1288 /* Undefined weak symbol is only bound locally in executable
1289 and its reference is resolved as 0. */
0a27fed7
L		 1290 if (h->root.type == bfd_link_hash_undefweak
1291 && !eh->linker_def
1292 && local_ref)
c175a657
L		 1293 {
1294 if (opcode == 0xff)
1295 {
1296 /* No direct branch to 0 for PIC. */
1297 if (is_pic)
1298 return TRUE;
1299 else
1300 goto convert_branch;
1301 }
1302 else
1303 {
1304 /* We can convert load of address 0 to R_386_32. */
1305 to_reloc_32 = TRUE;
1306 goto convert_load;
1307 }
1308 }
1309
1310 if (opcode == 0xff)
1311 {
1312 /* We have "call/jmp *foo@GOT[(%reg)]". */
1313 if ((h->root.type == bfd_link_hash_defined
1314 || h->root.type == bfd_link_hash_defweak)
0a27fed7 1315 && local_ref)
c175a657
L		 1316 {
1317 /* The function is locally defined. */
1318convert_branch:
1319 /* Convert R_386_GOT32X to R_386_PC32. */
1320 if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
1321 {
1322 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1323 is a nop prefix. */
1324 modrm = 0xe8;
6eaa7fb5
L		 1325 /* To support TLS optimization, always use addr32 prefix
1326 for "call *___tls_get_addr@GOT(%reg)". */
1d4af308 1327 if (eh && eh->tls_get_addr)
c175a657 1328 {
6eaa7fb5
L		 1329 nop = 0x67;
1330 nop_offset = irel->r_offset - 2;
c175a657
L		 1331 }
1332 else
6eaa7fb5
L		 1333 {
1334 nop = link_info->call_nop_byte;
1335 if (link_info->call_nop_as_suffix)
1336 {
1337 nop_offset = roff + 3;
1338 irel->r_offset -= 1;
1339 }
1340 else
1341 nop_offset = roff - 2;
1342 }
c175a657
L		 1343 }
1344 else
1345 {
1346 /* Convert to "jmp foo nop". */
1347 modrm = 0xe9;
1348 nop = NOP_OPCODE;
1349 nop_offset = roff + 3;
1350 irel->r_offset -= 1;
1351 }
1352
1353 bfd_put_8 (abfd, nop, contents + nop_offset);
1354 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1355 /* When converting to PC-relative relocation, we
1356 need to adjust addend by -4. */
1357 bfd_put_32 (abfd, -4, contents + irel->r_offset);
1358 irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
6999821f 1359 *r_type_p = R_386_PC32;
5e5e02ae 1360 *converted = TRUE;
c175a657
L		 1361 }
1362 }
1363 else
1364 {
1365 /* We have "mov foo@GOT[(%re1g)], %reg2",
1366 "test %reg1, foo@GOT(%reg2)" and
1367 "binop foo@GOT[(%reg1)], %reg2".
1368
1369 Avoid optimizing _DYNAMIC since ld.so may use its
1370 link-time address. */
1371 if (h == htab->elf.hdynamic)
1372 return TRUE;
1373
1374 /* def_regular is set by an assignment in a linker script in
cbd0eecf
L		 1375 bfd_elf_record_link_assignment. start_stop is set on
1376 __start_SECNAME/__stop_SECNAME which mark section SECNAME. */
1377 if (h->start_stop
0a27fed7 1378 || eh->linker_def
cbd0eecf
L		 1379 || ((h->def_regular
1380 || h->root.type == bfd_link_hash_defined
1381 || h->root.type == bfd_link_hash_defweak)
0a27fed7 1382 && local_ref))
c175a657
L		 1383 {
1384convert_load:
1385 if (opcode == 0x8b)
1386 {
1387 if (to_reloc_32)
1388 {
1389 /* Convert "mov foo@GOT[(%reg1)], %reg2" to
1390 "mov $foo, %reg2" with R_386_32. */
1391 r_type = R_386_32;
1392 modrm = 0xc0 | (modrm & 0x38) >> 3;
1393 bfd_put_8 (abfd, modrm, contents + roff - 1);
1394 opcode = 0xc7;
1395 }
1396 else
1397 {
1398 /* Convert "mov foo@GOT(%reg1), %reg2" to
1399 "lea foo@GOTOFF(%reg1), %reg2". */
1400 r_type = R_386_GOTOFF;
1401 opcode = 0x8d;
1402 }
1403 }
1404 else
1405 {
1406 /* Only R_386_32 is supported. */
1407 if (!to_reloc_32)
1408 return TRUE;
1409
1410 if (opcode == 0x85)
1411 {
1412 /* Convert "test %reg1, foo@GOT(%reg2)" to
1413 "test $foo, %reg1". */
1414 modrm = 0xc0 | (modrm & 0x38) >> 3;
1415 opcode = 0xf7;
1416 }
1417 else
1418 {
1419 /* Convert "binop foo@GOT(%reg1), %reg2" to
1420 "binop $foo, %reg2". */
1421 modrm = (0xc0
1422 | (modrm & 0x38) >> 3
1423 | (opcode & 0x3c));
1424 opcode = 0x81;
1425 }
1426 bfd_put_8 (abfd, modrm, contents + roff - 1);
1427 r_type = R_386_32;
1428 }
1429
1430 bfd_put_8 (abfd, opcode, contents + roff - 2);
1431 irel->r_info = ELF32_R_INFO (r_symndx, r_type);
6999821f 1432 *r_type_p = r_type;
5e5e02ae 1433 *converted = TRUE;
c175a657
L		 1434 }
1435 }
1436
1437 return TRUE;
1438}
1439
c1d11331
L		 1440/* Rename some of the generic section flags to better document how they
1441 are used here. */
6999821f 1442#define check_relocs_failed sec_flg0
c1d11331 1443
252b5132 1444/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1445 calculate needed space in the global offset table, procedure linkage
1446 table, and dynamic reloc sections. */
252b5132 1447
b34976b6 1448static bfd_boolean
55fd94b0
AM		 1449elf_i386_check_relocs (bfd *abfd,
1450 struct bfd_link_info *info,
1451 asection *sec,
1452 const Elf_Internal_Rela *relocs)
252b5132 1453{
0afcef53 1454 struct elf_x86_link_hash_table *htab;
252b5132
RH		 1455 Elf_Internal_Shdr *symtab_hdr;
1456 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1457 const Elf_Internal_Rela *rel;
1458 const Elf_Internal_Rela *rel_end;
252b5132 1459 asection *sreloc;
bedfd056 1460 bfd_byte *contents;
5e5e02ae 1461 bfd_boolean converted;
252b5132 1462
0e1862bb 1463 if (bfd_link_relocatable (info))
b34976b6 1464 return TRUE;
252b5132 1465
081b1afe
L		 1466 /* Don't do anything special with non-loaded, non-alloced sections.
1467 In particular, any relocs in such sections should not affect GOT
1468 and PLT reference counting (ie. we don't allow them to create GOT
1469 or PLT entries), there's no possibility or desire to optimize TLS
1470 relocs, and there's not much point in propagating relocs to shared
1471 libs that the dynamic linker won't relocate. */
1472 if ((sec->flags & SEC_ALLOC) == 0)
1473 return TRUE;
1474
0afcef53 1475 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6 1476 if (htab == NULL)
c337a162
L		 1477 {
1478 sec->check_relocs_failed = 1;
1479 return FALSE;
1480 }
4dfe6ac6 1481
fe53b4a4
L		 1482 BFD_ASSERT (is_x86_elf (abfd, htab));
1483
bedfd056
L		 1484 /* Get the section contents. */
1485 if (elf_section_data (sec)->this_hdr.contents != NULL)
1486 contents = elf_section_data (sec)->this_hdr.contents;
1487 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1488 {
1489 sec->check_relocs_failed = 1;
1490 return FALSE;
1491 }
1492
0ffa91dd 1493 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1494 sym_hashes = elf_sym_hashes (abfd);
252b5132 1495
5e5e02ae
L		 1496 converted = FALSE;
1497
252b5132
RH		 1498 sreloc = NULL;
1499
1500 rel_end = relocs + sec->reloc_count;
1501 for (rel = relocs; rel < rel_end; rel++)
1502 {
13ae64f3 1503 unsigned int r_type;
d42c267e 1504 unsigned int r_symndx;
252b5132 1505 struct elf_link_hash_entry *h;
0afcef53 1506 struct elf_x86_link_hash_entry *eh;
4c544807
L		 1507 Elf_Internal_Sym *isym;
1508 const char *name;
06a6a421 1509 bfd_boolean size_reloc;
252b5132
RH		 1510
1511 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1512 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1513
d9bc7a44 1514 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1515 {
695344c0 1516 /* xgettext:c-format */
871b3ab2 1517 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 1518 abfd, r_symndx);
c337a162 1519 goto error_return;
f5f31454
L		 1520 }
1521
252b5132 1522 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1523 {
1524 /* A local symbol. */
c2e61a4e
L		 1525 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1526 abfd, r_symndx);
1527 if (isym == NULL)
c337a162 1528 goto error_return;
c25bc9fc
L		 1529
1530 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1531 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1532 {
0afcef53 1533 h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1534 if (h == NULL)
c337a162 1535 goto error_return;
6bbec505 1536
c25bc9fc 1537 /* Fake a STT_GNU_IFUNC symbol. */
6322e5c5
L		 1538 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
1539 isym, NULL);
c25bc9fc
L		 1540 h->type = STT_GNU_IFUNC;
1541 h->def_regular = 1;
1542 h->ref_regular = 1;
1543 h->forced_local = 1;
1544 h->root.type = bfd_link_hash_defined;
1545 }
1546 else
1547 h = NULL;
1548 }
252b5132 1549 else
71cb9464 1550 {
4c544807 1551 isym = NULL;
71cb9464
L		 1552 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1553 while (h->root.type == bfd_link_hash_indirect
1554 || h->root.type == bfd_link_hash_warning)
1555 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1556 }
cbe950e9 1557
0afcef53 1558 eh = (struct elf_x86_link_hash_entry *) h;
c25bc9fc
L		 1559 if (h != NULL)
1560 {
f604c2a2
L		 1561 if (r_type == R_386_GOTOFF)
1562 eh->gotoff_ref = 1;
cbe950e9 1563
ad1e85de
L		 1564 /* It is referenced by a non-shared object. */
1565 h->ref_regular = 1;
13a2df29
L		 1566
1567 if (h->type == STT_GNU_IFUNC)
1568 elf_tdata (info->output_bfd)->has_gnu_symbols
1569 |= elf_gnu_symbol_ifunc;
71cb9464 1570 }
252b5132 1571
6999821f
L		 1572 if (r_type == R_386_GOT32X
1573 && (h == NULL || h->type != STT_GNU_IFUNC))
1574 {
1575 Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel;
1576 if (!elf_i386_convert_load_reloc (abfd, symtab_hdr, contents,
5e5e02ae
L		 1577 &r_type, irel, h,
1578 &converted, info))
6999821f
L		 1579 goto error_return;
1580 }
1581
bedfd056 1582 if (! elf_i386_tls_transition (info, abfd, sec, contents,
142411ca
L		 1583 symtab_hdr, sym_hashes,
1584 &r_type, GOT_UNKNOWN,
bedfd056 1585 rel, rel_end, h, r_symndx, FALSE))
c337a162 1586 goto error_return;
13ae64f3 1587
cd048363
L		 1588 /* Check if _GLOBAL_OFFSET_TABLE_ is referenced. */
1589 if (h == htab->elf.hgot)
1590 htab->got_referenced = TRUE;
1591
13ae64f3 1592 switch (r_type)
252b5132 1593 {
37e55690 1594 case R_386_TLS_LDM:
0f09b4d8 1595 htab->tls_ld_or_ldm_got.refcount = 1;
37e55690
JJ		 1596 goto create_got;
1597
1598 case R_386_PLT32:
1599 /* This symbol requires a procedure linkage table entry. We
1600 actually build the entry in adjust_dynamic_symbol,
1601 because this might be a case of linking PIC code which is
1602 never referenced by a dynamic object, in which case we
1603 don't need to generate a procedure linkage table entry
1604 after all. */
1605
1606 /* If this is a local symbol, we resolve it directly without
1607 creating a procedure linkage table entry. */
1608 if (h == NULL)
1609 continue;
1610
98b273dc 1611 eh->zero_undefweak &= 0x2;
f5385ebf 1612 h->needs_plt = 1;
79b0c981 1613 h->plt.refcount = 1;
37e55690
JJ		 1614 break;
1615
6a3e1bae 1616 case R_386_SIZE32:
06a6a421 1617 size_reloc = TRUE;
6a3e1bae
L		 1618 goto do_size;
1619
13ae64f3 1620 case R_386_TLS_IE_32:
37e55690
JJ		 1621 case R_386_TLS_IE:
1622 case R_386_TLS_GOTIE:
0e1862bb 1623 if (!bfd_link_executable (info))
13ae64f3 1624 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1625 /* Fall through */
1626
252b5132 1627 case R_386_GOT32:
02a86693 1628 case R_386_GOT32X:
13ae64f3 1629 case R_386_TLS_GD:
67a4f2b7
AO		 1630 case R_386_TLS_GOTDESC:
1631 case R_386_TLS_DESC_CALL:
252b5132 1632 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1633 {
1634 int tls_type, old_tls_type;
1635
1636 switch (r_type)
1637 {
1638 default:
02a86693
L		 1639 case R_386_GOT32:
1640 case R_386_GOT32X:
1641 tls_type = GOT_NORMAL;
1642 break;
13ae64f3 1643 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1644 case R_386_TLS_GOTDESC:
1645 case R_386_TLS_DESC_CALL:
1646 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1647 case R_386_TLS_IE_32:
1648 if (ELF32_R_TYPE (rel->r_info) == r_type)
1649 tls_type = GOT_TLS_IE_NEG;
1650 else
ebcfb3c0
JJ		 1651 /* If this is a GD->IE transition, we may use either of
1652 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1653 tls_type = GOT_TLS_IE;
1654 break;
1655 case R_386_TLS_IE:
1656 case R_386_TLS_GOTIE:
1657 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1658 }
1659
1660 if (h != NULL)
1661 {
0f09b4d8 1662 h->got.refcount = 1;
0afcef53 1663 old_tls_type = elf_x86_hash_entry (h)->tls_type;
13ae64f3
JJ		 1664 }
1665 else
1666 {
1667 bfd_signed_vma *local_got_refcounts;
1668
1669 /* This is a global offset table entry for a local symbol. */
1670 local_got_refcounts = elf_local_got_refcounts (abfd);
1671 if (local_got_refcounts == NULL)
1672 {
1673 bfd_size_type size;
1674
1675 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1676 size *= (sizeof (bfd_signed_vma)
1677 + sizeof (bfd_vma) + sizeof(char));
a50b1753 1678 local_got_refcounts = (bfd_signed_vma *)
07d6d2b8 1679 bfd_zalloc (abfd, size);
13ae64f3 1680 if (local_got_refcounts == NULL)
c337a162 1681 goto error_return;
13ae64f3 1682 elf_local_got_refcounts (abfd) = local_got_refcounts;
0afcef53 1683 elf_x86_local_tlsdesc_gotent (abfd)
67a4f2b7 1684 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
0afcef53 1685 elf_x86_local_got_tls_type (abfd)
67a4f2b7 1686 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3 1687 }
0f09b4d8 1688 local_got_refcounts[r_symndx] = 1;
0afcef53 1689 old_tls_type = elf_x86_local_got_tls_type (abfd) [r_symndx];
13ae64f3
JJ		 1690 }
1691
37e55690
JJ		 1692 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1693 tls_type |= old_tls_type;
13ae64f3
JJ		 1694 /* If a TLS symbol is accessed using IE at least once,
1695 there is no point to use dynamic model for it. */
ebcfb3c0 1696 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1697 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1698 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1699 {
67a4f2b7 1700 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1701 tls_type = old_tls_type;
67a4f2b7
AO		 1702 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1703 && GOT_TLS_GD_ANY_P (tls_type))
1704 tls_type |= old_tls_type;
13ae64f3
JJ		 1705 else
1706 {
09a24cbf 1707 if (h)
4c544807
L		 1708 name = h->root.root.string;
1709 else
1710 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1711 NULL);
4eca0228 1712 _bfd_error_handler
695344c0 1713 /* xgettext:c-format */
871b3ab2 1714 (_("%pB: `%s' accessed both as normal and "
55fd94b0 1715 "thread local symbol"),
4c544807 1716 abfd, name);
68c4a57e 1717 bfd_set_error (bfd_error_bad_value);
c337a162 1718 goto error_return;
13ae64f3
JJ		 1719 }
1720 }
1721
1722 if (old_tls_type != tls_type)
1723 {
1724 if (h != NULL)
0afcef53 1725 elf_x86_hash_entry (h)->tls_type = tls_type;
13ae64f3 1726 else
0afcef53 1727 elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
13ae64f3
JJ		 1728 }
1729 }
0ac8d2ca
AM		 1730 /* Fall through */
1731
1732 case R_386_GOTOFF:
1733 case R_386_GOTPC:
cd048363 1734create_got:
37e55690 1735 if (r_type != R_386_TLS_IE)
aec6b87e
L		 1736 {
1737 if (eh != NULL)
cd048363
L		 1738 {
1739 eh->zero_undefweak &= 0x2;
1740
1741 /* Need GOT to resolve undefined weak symbol to 0. */
1742 if (r_type == R_386_GOTOFF
1743 && h->root.type == bfd_link_hash_undefweak
1744 && bfd_link_executable (info))
1745 htab->got_referenced = TRUE;
1746 }
aec6b87e
L		 1747 break;
1748 }
37e55690 1749 /* Fall through */
252b5132 1750
37e55690
JJ		 1751 case R_386_TLS_LE_32:
1752 case R_386_TLS_LE:
aec6b87e 1753 if (eh != NULL)
98b273dc 1754 eh->zero_undefweak &= 0x2;
0e1862bb 1755 if (bfd_link_executable (info))
37e55690 1756 break;
bffbf940 1757 info->flags |= DF_STATIC_TLS;
aec6b87e 1758 goto do_relocation;
252b5132
RH		 1759
1760 case R_386_32:
1761 case R_386_PC32:
aec6b87e 1762 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
98b273dc 1763 eh->zero_undefweak |= 0x2;
aec6b87e 1764do_relocation:
bf52d7c7
L		 1765 /* We are called after all symbols have been resolved. Only
1766 relocation against STT_GNU_IFUNC symbol must go through
1767 PLT. */
d1ed1c7d
L		 1768 if (h != NULL
1769 && (bfd_link_executable (info)
bf52d7c7 1770 || h->type == STT_GNU_IFUNC))
6725bdbf 1771 {
79b0c981 1772 bfd_boolean func_pointer_ref = FALSE;
233cc9c1 1773
4b627c18
L		 1774 if (r_type == R_386_PC32)
1775 {
1776 /* Since something like ".long foo - ." may be used
1777 as pointer, make sure that PLT is used if foo is
1778 a function defined in a shared library. */
1779 if ((sec->flags & SEC_CODE) == 0)
1780 h->pointer_equality_needed = 1;
74437ea2
L		 1781 else if (h->type == STT_GNU_IFUNC
1782 && bfd_link_pic (info))
1783 {
6322e5c5
L		 1784 _bfd_error_handler
1785 /* xgettext:c-format */
871b3ab2 1786 (_("%pB: unsupported non-PIC call to IFUNC `%s'"),
6322e5c5 1787 abfd, h->root.root.string);
74437ea2
L		 1788 bfd_set_error (bfd_error_bad_value);
1789 goto error_return;
1790 }
4b627c18
L		 1791 }
1792 else
04ebc307
L		 1793 {
1794 h->pointer_equality_needed = 1;
1795 /* R_386_32 can be resolved at run-time. */
1796 if (r_type == R_386_32
1797 && (sec->flags & SEC_READONLY) == 0)
79b0c981
L		 1798 func_pointer_ref = TRUE;
1799 }
1800
1801 if (!func_pointer_ref)
1802 {
1803 /* If this reloc is in a read-only section, we might
1804 need a copy reloc. We can't check reliably at this
1805 stage whether the section is read-only, as input
1806 sections have not yet been mapped to output sections.
1807 Tentatively set the flag for now, and correct in
1808 adjust_dynamic_symbol. */
1809 h->non_got_ref = 1;
1810
1811 /* We may need a .plt entry if the symbol is a function
1812 defined in a shared lib or is a function referenced
1813 from the code or read-only section. */
1814 if (!h->def_regular
1815 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
1816 h->plt.refcount = 1;
04ebc307 1817 }
6725bdbf 1818 }
7843f00e 1819
06a6a421 1820 size_reloc = FALSE;
6a3e1bae 1821do_size:
451875b4 1822 if (NEED_DYNAMIC_RELOCATION_P (info, FALSE, h, sec, r_type,
daf1c414 1823 R_386_32))
252b5132 1824 {
e03a8ed8
L		 1825 struct elf_dyn_relocs *p;
1826 struct elf_dyn_relocs **head;
ec338859 1827
12d0ee4a
AM		 1828 /* We must copy these reloc types into the output file.
1829 Create a reloc section in dynobj and make room for
1830 this reloc. */
252b5132
RH		 1831 if (sreloc == NULL)
1832 {
83bac4b0
NC		 1833 sreloc = _bfd_elf_make_dynamic_reloc_section
1834 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1835
252b5132 1836 if (sreloc == NULL)
c337a162 1837 goto error_return;
252b5132
RH		 1838 }
1839
0c715baa
AM		 1840 /* If this is a global symbol, we count the number of
1841 relocations we need for this symbol. */
1842 if (h != NULL)
252b5132 1843 {
d5597ebc 1844 head = &eh->dyn_relocs;
0c715baa
AM		 1845 }
1846 else
1847 {
ec338859
AM		 1848 /* Track dynamic relocs needed for local syms too.
1849 We really need local syms available to do this
1850 easily. Oh well. */
87d72d41 1851 void **vpp;
ec338859 1852 asection *s;
87d72d41
AM		 1853
1854 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1855 abfd, r_symndx);
1856 if (isym == NULL)
c337a162 1857 goto error_return;
87d72d41
AM		 1858
1859 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1860 if (s == NULL)
87d72d41 1861 s = sec;
ec338859 1862
e81d3500 1863 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1864 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1865 }
1866
1867 p = *head;
1868 if (p == NULL || p->sec != sec)
1869 {
1870 bfd_size_type amt = sizeof *p;
a50b1753 1871 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
07d6d2b8 1872 amt);
ec338859 1873 if (p == NULL)
c337a162 1874 goto error_return;
ec338859
AM		 1875 p->next = *head;
1876 *head = p;
1877 p->sec = sec;
1878 p->count = 0;
1879 p->pc_count = 0;
252b5132 1880 }
ec338859
AM		 1881
1882 p->count += 1;
06a6a421
L		 1883 /* Count size relocation as PC-relative relocation. */
1884 if (r_type == R_386_PC32 || size_reloc)
ec338859 1885 p->pc_count += 1;
252b5132 1886 }
252b5132
RH		 1887 break;
1888
1889 /* This relocation describes the C++ object vtable hierarchy.
1890 Reconstruct it for later use during GC. */
1891 case R_386_GNU_VTINHERIT:
d17e0c6e 1892 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c337a162 1893 goto error_return;
252b5132
RH		 1894 break;
1895
1896 /* This relocation describes which C++ vtable entries are actually
1897 used. Record for later use during GC. */
1898 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1899 BFD_ASSERT (h != NULL);
1900 if (h != NULL
1901 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c337a162 1902 goto error_return;
252b5132
RH		 1903 break;
1904
1905 default:
1906 break;
1907 }
1908 }
1909
bedfd056
L		 1910 if (elf_section_data (sec)->this_hdr.contents != contents)
1911 {
5e5e02ae 1912 if (!converted && !info->keep_memory)
bedfd056
L		 1913 free (contents);
1914 else
1915 {
5e5e02ae
L		 1916 /* Cache the section contents for elf_link_input_bfd if any
1917 load is converted or --no-keep-memory isn't used. */
bedfd056
L		 1918 elf_section_data (sec)->this_hdr.contents = contents;
1919 }
1920 }
1921
5e5e02ae
L		 1922 /* Cache relocations if any load is converted. */
1923 if (elf_section_data (sec)->relocs != relocs && converted)
1924 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
1925
b34976b6 1926 return TRUE;
c337a162
L		 1927
1928error_return:
bedfd056
L		 1929 if (elf_section_data (sec)->this_hdr.contents != contents)
1930 free (contents);
c337a162
L		 1931 sec->check_relocs_failed = 1;
1932 return FALSE;
252b5132
RH		 1933}
1934
38701953
AM		 1935/* Set the correct type for an x86 ELF section. We do this by the
1936 section name, which is a hack, but ought to work. */
1937
b34976b6 1938static bfd_boolean
55fd94b0
AM		 1939elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1940 Elf_Internal_Shdr *hdr,
1941 asection *sec)
38701953 1942{
91d6fa6a 1943 const char *name;
38701953
AM		 1944
1945 name = bfd_get_section_name (abfd, sec);
1946
1947 /* This is an ugly, but unfortunately necessary hack that is
1948 needed when producing EFI binaries on x86. It tells
1949 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1950 containing ELF relocation info. We need this hack in order to
1951 be able to generate ELF binaries that can be translated into
1952 EFI applications (which are essentially COFF objects). Those
1953 files contain a COFF ".reloc" section inside an ELFNN object,
1954 which would normally cause BFD to segfault because it would
1955 attempt to interpret this section as containing relocation
1956 entries for section "oc". With this hack enabled, ".reloc"
1957 will be treated as a normal data section, which will avoid the
1958 segfault. However, you won't be able to create an ELFNN binary
1959 with a section named "oc" that needs relocations, but that's
1960 the kind of ugly side-effects you get when detecting section
1961 types based on their names... In practice, this limitation is
1962 unlikely to bite. */
1963 if (strcmp (name, ".reloc") == 0)
1964 hdr->sh_type = SHT_PROGBITS;
1965
b34976b6 1966 return TRUE;
38701953
AM		 1967}
1968
13ae64f3
JJ		 1969/* Return the relocation value for @tpoff relocation
1970 if STT_TLS virtual address is ADDRESS. */
1971
1972static bfd_vma
eb4ff4d6 1973elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 1974{
e1918d23 1975 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 1976 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
1977 bfd_vma static_tls_size;
13ae64f3 1978
e1918d23
AM		 1979 /* If tls_sec is NULL, we should have signalled an error already. */
1980 if (htab->tls_sec == NULL)
6a30718d 1981 return 0;
7dc98aea
RO		 1982
1983 /* Consider special static TLS alignment requirements. */
1984 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
1985 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 1986}
1987
252b5132
RH		 1988/* Relocate an i386 ELF section. */
1989
b34976b6 1990static bfd_boolean
55fd94b0
AM		 1991elf_i386_relocate_section (bfd *output_bfd,
1992 struct bfd_link_info *info,
1993 bfd *input_bfd,
1994 asection *input_section,
1995 bfd_byte *contents,
1996 Elf_Internal_Rela *relocs,
1997 Elf_Internal_Sym *local_syms,
1998 asection **local_sections)
252b5132 1999{
0afcef53 2000 struct elf_x86_link_hash_table *htab;
252b5132
RH		 2001 Elf_Internal_Shdr *symtab_hdr;
2002 struct elf_link_hash_entry **sym_hashes;
2003 bfd_vma *local_got_offsets;
67a4f2b7 2004 bfd_vma *local_tlsdesc_gotents;
252b5132 2005 Elf_Internal_Rela *rel;
60f2e42e 2006 Elf_Internal_Rela *wrel;
252b5132 2007 Elf_Internal_Rela *relend;
3348747a 2008 bfd_boolean is_vxworks_tls;
25e762b9 2009 unsigned plt_entry_size;
252b5132 2010
c337a162
L		 2011 /* Skip if check_relocs failed. */
2012 if (input_section->check_relocs_failed)
2013 return FALSE;
2014
0afcef53 2015 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 2016 if (htab == NULL)
2017 return FALSE;
fe53b4a4
L		 2018
2019 BFD_ASSERT (is_x86_elf (input_bfd, htab));
2020
0ffa91dd 2021 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 2022 sym_hashes = elf_sym_hashes (input_bfd);
2023 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2024 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 2025 /* We have to handle relocations in vxworks .tls_vars sections
2026 specially, because the dynamic loader is 'weird'. */
851b6fa1 2027 is_vxworks_tls = (htab->target_os == is_vxworks
07d6d2b8 2028 && bfd_link_pic (info)
3348747a
NS		 2029 && !strcmp (input_section->output_section->name,
2030 ".tls_vars"));
252b5132 2031
0afcef53 2032 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2033
765e526c 2034 plt_entry_size = htab->plt.plt_entry_size;
25e762b9 2035
60f2e42e 2036 rel = wrel = relocs;
252b5132 2037 relend = relocs + input_section->reloc_count;
60f2e42e 2038 for (; rel < relend; wrel++, rel++)
252b5132 2039 {
419414ea 2040 unsigned int r_type, r_type_tls;
252b5132
RH		 2041 reloc_howto_type *howto;
2042 unsigned long r_symndx;
2043 struct elf_link_hash_entry *h;
0afcef53 2044 struct elf_x86_link_hash_entry *eh;
252b5132
RH		 2045 Elf_Internal_Sym *sym;
2046 asection *sec;
dd7e64d4 2047 bfd_vma off, offplt, plt_offset;
252b5132 2048 bfd_vma relocation;
b34976b6 2049 bfd_boolean unresolved_reloc;
252b5132 2050 bfd_reloc_status_type r;
1b452ec6 2051 unsigned int indx;
13ae64f3 2052 int tls_type;
1788fc08 2053 bfd_vma st_size;
dd7e64d4 2054 asection *resolved_plt;
aec6b87e 2055 bfd_boolean resolved_to_zero;
e133d005 2056 bfd_boolean relative_reloc;
252b5132
RH		 2057
2058 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 2059 if (r_type == R_386_GNU_VTINHERIT
2060 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 2061 {
2062 if (wrel != rel)
2063 *wrel = *rel;
2064 continue;
2065 }
dc47f327 2066
55fd94b0 2067 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 2068 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2069 >= R_386_ext - R_386_standard)
2070 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 2071 >= R_386_ext2 - R_386_ext))
47aeb64c
NC		 2072 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2073
1b452ec6 2074 howto = elf_howto_table + indx;
252b5132
RH		 2075
2076 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 2077 h = NULL;
2078 sym = NULL;
2079 sec = NULL;
b34976b6 2080 unresolved_reloc = FALSE;
252b5132
RH		 2081 if (r_symndx < symtab_hdr->sh_info)
2082 {
2083 sym = local_syms + r_symndx;
2084 sec = local_sections[r_symndx];
2085 relocation = (sec->output_section->vma
2086 + sec->output_offset
2087 + sym->st_value);
1788fc08 2088 st_size = sym->st_size;
ab96bf03
AM		 2089
2090 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2091 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 2092 || (bfd_link_relocatable (info)
ab96bf03 2093 && sec->output_offset != 0)))
f8df10f4 2094 {
f8df10f4 2095 bfd_vma addend;
4a335f3d 2096 bfd_byte *where = contents + rel->r_offset;
f8df10f4 2097
4a335f3d 2098 switch (howto->size)
f8df10f4 2099 {
4a335f3d
AM		 2100 case 0:
2101 addend = bfd_get_8 (input_bfd, where);
2102 if (howto->pc_relative)
2103 {
2104 addend = (addend ^ 0x80) - 0x80;
2105 addend += 1;
2106 }
2107 break;
2108 case 1:
2109 addend = bfd_get_16 (input_bfd, where);
2110 if (howto->pc_relative)
2111 {
2112 addend = (addend ^ 0x8000) - 0x8000;
2113 addend += 2;
2114 }
2115 break;
2116 case 2:
2117 addend = bfd_get_32 (input_bfd, where);
2118 if (howto->pc_relative)
2119 {
2120 addend = (addend ^ 0x80000000) - 0x80000000;
2121 addend += 4;
2122 }
2123 break;
2124 default:
2125 abort ();
f8df10f4
JJ		 2126 }
2127
0e1862bb 2128 if (bfd_link_relocatable (info))
ab96bf03
AM		 2129 addend += sec->output_offset;
2130 else
2131 {
2132 asection *msec = sec;
2133 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2134 addend);
2135 addend -= relocation;
2136 addend += msec->output_section->vma + msec->output_offset;
2137 }
4a335f3d
AM		 2138
2139 switch (howto->size)
2140 {
2141 case 0:
16a10388 2142 /* FIXME: overflow checks. */
4a335f3d
AM		 2143 if (howto->pc_relative)
2144 addend -= 1;
2145 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 2146 break;
2147 case 1:
2148 if (howto->pc_relative)
2149 addend -= 2;
2150 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 2151 break;
2152 case 2:
2153 if (howto->pc_relative)
2154 addend -= 4;
2155 bfd_put_32 (input_bfd, addend, where);
2156 break;
2157 }
f8df10f4 2158 }
0e1862bb 2159 else if (!bfd_link_relocatable (info)
1f85278f 2160 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 2161 {
2162 /* Relocate against local STT_GNU_IFUNC symbol. */
0afcef53
L		 2163 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd, rel,
2164 FALSE);
c25bc9fc
L		 2165 if (h == NULL)
2166 abort ();
2167
23209a78 2168 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2169 h->root.u.def.value = sym->st_value;
2170 h->root.u.def.section = sec;
2171 }
252b5132
RH		 2172 }
2173 else
2174 {
3d540e93 2175 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2176 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 2177
b2a8e766
AM		 2178 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2179 r_symndx, symtab_hdr, sym_hashes,
2180 h, sec, relocation,
62d887d4 2181 unresolved_reloc, warned, ignored);
1788fc08 2182 st_size = h->size;
252b5132
RH		 2183 }
2184
dbaa2011 2185 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2186 {
2187 _bfd_clear_contents (howto, input_bfd, input_section,
2188 contents + rel->r_offset);
2189 wrel->r_offset = rel->r_offset;
2190 wrel->r_info = 0;
2191 wrel->r_addend = 0;
2192
2193 /* For ld -r, remove relocations in debug sections against
2194 sections defined in discarded sections. Not done for
2195 eh_frame editing code expects to be present. */
2196 if (bfd_link_relocatable (info)
2197 && (input_section->flags & SEC_DEBUGGING))
2198 wrel--;
2199
2200 continue;
2201 }
9635fe29 2202
0e1862bb 2203 if (bfd_link_relocatable (info))
2d5da473
L		 2204 {
2205 if (wrel != rel)
2206 *wrel = *rel;
2207 continue;
2208 }
ab96bf03 2209
0afcef53 2210 eh = (struct elf_x86_link_hash_entry *) h;
ee2fdd6f 2211
cbe950e9
L		 2212 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2213 it here if it is defined in a non-shared object. */
2214 if (h != NULL
2215 && h->type == STT_GNU_IFUNC
2216 && h->def_regular)
2217 {
ee2fdd6f 2218 asection *gotplt, *base_got;
cbe950e9 2219 bfd_vma plt_index;
4c544807 2220 const char *name;
cbe950e9 2221
97dc35c8
L		 2222 if ((input_section->flags & SEC_ALLOC) == 0)
2223 {
347a8774
L		 2224 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
2225 STT_GNU_IFUNC symbol as STT_FUNC. */
2226 if (elf_section_type (input_section) == SHT_NOTE)
2227 goto skip_ifunc;
97dc35c8
L		 2228 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2229 sections because such sections are not SEC_ALLOC and
2230 thus ld.so will not process them. */
2231 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2232 continue;
97dc35c8
L		 2233 abort ();
2234 }
cbe950e9
L		 2235
2236 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 2237 if (htab->elf.splt != NULL)
cbe950e9 2238 {
ee2fdd6f
L		 2239 if (htab->plt_second != NULL)
2240 {
2241 resolved_plt = htab->plt_second;
2242 plt_offset = eh->plt_second.offset;
2243 }
2244 else
2245 {
2246 resolved_plt = htab->elf.splt;
2247 plt_offset = h->plt.offset;
2248 }
6de2ae4a 2249 gotplt = htab->elf.sgotplt;
cbe950e9
L		 2250 }
2251 else
2252 {
ee2fdd6f
L		 2253 resolved_plt = htab->elf.iplt;
2254 plt_offset = h->plt.offset;
6de2ae4a 2255 gotplt = htab->elf.igotplt;
cbe950e9
L		 2256 }
2257
cbe950e9
L		 2258 switch (r_type)
2259 {
2260 default:
233cc9c1 2261 break;
cbe950e9
L		 2262
2263 case R_386_GOT32:
02a86693 2264 case R_386_GOT32X:
6de2ae4a 2265 base_got = htab->elf.sgot;
cbe950e9
L		 2266 off = h->got.offset;
2267
7afd84dc 2268 if (base_got == NULL)
cbe950e9
L		 2269 abort ();
2270
7afd84dc 2271 if (off == (bfd_vma) -1)
cbe950e9 2272 {
7afd84dc
L		 2273 /* We can't use h->got.offset here to save state, or
2274 even just remember the offset, as finish_dynamic_symbol
2275 would use that as offset into .got. */
6bbec505 2276
233cc9c1
L		 2277 if (h->plt.offset == (bfd_vma) -1)
2278 abort ();
2279
6de2ae4a 2280 if (htab->elf.splt != NULL)
7afd84dc 2281 {
f604c2a2 2282 plt_index = (h->plt.offset / plt_entry_size
765e526c 2283 - htab->plt.has_plt0);
7afd84dc 2284 off = (plt_index + 3) * 4;
6de2ae4a 2285 base_got = htab->elf.sgotplt;
7afd84dc 2286 }
cbe950e9
L		 2287 else
2288 {
25e762b9 2289 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 2290 off = plt_index * 4;
6de2ae4a 2291 base_got = htab->elf.igotplt;
7afd84dc
L		 2292 }
2293
2294 if (h->dynindx == -1
2295 || h->forced_local
2296 || info->symbolic)
2297 {
2298 /* This references the local defitionion. We must
2299 initialize this entry in the global offset table.
2300 Since the offset must always be a multiple of 8,
2301 we use the least significant bit to record
2302 whether we have initialized it already.
2303
2304 When doing a dynamic link, we create a .rela.got
2305 relocation entry to initialize the value. This
2306 is done in the finish_dynamic_symbol routine. */
2307 if ((off & 1) != 0)
2308 off &= ~1;
2309 else
2310 {
2311 bfd_put_32 (output_bfd, relocation,
2312 base_got->contents + off);
2313 h->got.offset |= 1;
2314 }
cbe950e9 2315 }
cbe950e9 2316
7afd84dc 2317 relocation = off;
7afd84dc
L		 2318 }
2319 else
ca8c86ef
L		 2320 relocation = (base_got->output_section->vma
2321 + base_got->output_offset + off
2322 - gotplt->output_section->vma
2323 - gotplt->output_offset);
2324
2a568401
L		 2325 if (rel->r_offset > 1
2326 && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5
2327 && *(contents + rel->r_offset - 2) != 0x8d)
712ec279
L		 2328 {
2329 if (bfd_link_pic (info))
2330 goto disallow_got32;
2331
2332 /* Add the GOT base if there is no base register. */
2333 relocation += (gotplt->output_section->vma
2334 + gotplt->output_offset);
2335 }
2336 else if (htab->elf.splt == NULL)
2337 {
2338 /* Adjust for static executables. */
2339 relocation += gotplt->output_offset;
2340 }
0018b0a3 2341
cbe950e9 2342 goto do_relocation;
233cc9c1
L		 2343 }
2344
2345 if (h->plt.offset == (bfd_vma) -1)
2346 {
2347 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2348 if (r_type == R_386_32
2349 && (input_section->flags & SEC_CODE) == 0)
2350 goto do_ifunc_pointer;
2351 goto bad_ifunc_reloc;
2352 }
2353
ee2fdd6f
L		 2354 relocation = (resolved_plt->output_section->vma
2355 + resolved_plt->output_offset + plt_offset);
233cc9c1
L		 2356
2357 switch (r_type)
2358 {
2359 default:
2360bad_ifunc_reloc:
2361 if (h->root.root.string)
2362 name = h->root.root.string;
2363 else
2364 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2365 NULL);
4eca0228 2366 _bfd_error_handler
695344c0 2367 /* xgettext:c-format */
871b3ab2 2368 (_("%pB: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 2369 "symbol `%s' isn't supported"), input_bfd,
2370 howto->name, name);
2371 bfd_set_error (bfd_error_bad_value);
2372 return FALSE;
2373
2374 case R_386_32:
2375 /* Generate dynamic relcoation only when there is a
2376 non-GOT reference in a shared object. */
2377 if ((bfd_link_pic (info) && h->non_got_ref)
2378 || h->plt.offset == (bfd_vma) -1)
2379 {
2380 Elf_Internal_Rela outrel;
2381 asection *sreloc;
2382 bfd_vma offset;
2383
2384do_ifunc_pointer:
2385 /* Need a dynamic relocation to get the real function
2386 adddress. */
2387 offset = _bfd_elf_section_offset (output_bfd,
2388 info,
2389 input_section,
2390 rel->r_offset);
2391 if (offset == (bfd_vma) -1
2392 || offset == (bfd_vma) -2)
2393 abort ();
2394
2395 outrel.r_offset = (input_section->output_section->vma
2396 + input_section->output_offset
2397 + offset);
2398
cf1070f1 2399 if (POINTER_LOCAL_IFUNC_P (info, h))
233cc9c1 2400 {
871b3ab2 2401 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 2402 h->root.root.string,
2403 h->root.u.def.section->owner);
2404
233cc9c1
L		 2405 /* This symbol is resolved locally. */
2406 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
2407 bfd_put_32 (output_bfd,
2408 (h->root.u.def.value
2409 + h->root.u.def.section->output_section->vma
2410 + h->root.u.def.section->output_offset),
2411 contents + offset);
2412 }
2413 else
2414 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2415
2416 /* Dynamic relocations are stored in
2417 1. .rel.ifunc section in PIC object.
2418 2. .rel.got section in dynamic executable.
2419 3. .rel.iplt section in static executable. */
2420 if (bfd_link_pic (info))
2421 sreloc = htab->elf.irelifunc;
2422 else if (htab->elf.splt != NULL)
2423 sreloc = htab->elf.srelgot;
2424 else
2425 sreloc = htab->elf.irelplt;
2426 elf_append_rel (output_bfd, sreloc, &outrel);
2427
2428 /* If this reloc is against an external symbol, we
2429 do not want to fiddle with the addend. Otherwise,
2430 we need to include the symbol value so that it
2431 becomes an addend for the dynamic reloc. For an
2432 internal symbol, we have updated addend. */
2433 continue;
2434 }
2435 /* FALLTHROUGH */
2436 case R_386_PC32:
2437 case R_386_PLT32:
2438 goto do_relocation;
cbe950e9
L		 2439
2440 case R_386_GOTOFF:
2441 relocation -= (gotplt->output_section->vma
2442 + gotplt->output_offset);
2443 goto do_relocation;
2444 }
2445 }
2446
347a8774 2447skip_ifunc:
aec6b87e 2448 resolved_to_zero = (eh != NULL
c5bce5c6 2449 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2450
252b5132
RH		 2451 switch (r_type)
2452 {
02a86693 2453 case R_386_GOT32X:
252b5132
RH		 2454 case R_386_GOT32:
2455 /* Relocation is to the entry for this symbol in the global
2456 offset table. */
6de2ae4a 2457 if (htab->elf.sgot == NULL)
ffb2e45b 2458 abort ();
252b5132 2459
e133d005 2460 relative_reloc = FALSE;
252b5132
RH		 2461 if (h != NULL)
2462 {
252b5132 2463 off = h->got.offset;
2eba97c2 2464 if (RESOLVED_LOCALLY_P (info, h, htab))
252b5132 2465 {
2eba97c2
L		 2466 /* We must initialize this entry in the global offset
2467 table. Since the offset must always be a multiple
2468 of 4, we use the least significant bit to record
2469 whether we have initialized it already.
252b5132
RH		 2470
2471 When doing a dynamic link, we create a .rel.got
2472 relocation entry to initialize the value. This
2473 is done in the finish_dynamic_symbol routine. */
2474 if ((off & 1) != 0)
2475 off &= ~1;
2476 else
2477 {
2478 bfd_put_32 (output_bfd, relocation,
6de2ae4a 2479 htab->elf.sgot->contents + off);
252b5132 2480 h->got.offset |= 1;
e133d005 2481
f70656b2 2482 if (GENERATE_RELATIVE_RELOC_P (info, h))
e133d005
L		 2483 {
2484 /* PR ld/21402: If this symbol isn't dynamic
0dc9a308 2485 in PIC, generate R_386_RELATIVE here. */
e133d005
L		 2486 eh->no_finish_dynamic_symbol = 1;
2487 relative_reloc = TRUE;
2488 }
252b5132
RH		 2489 }
2490 }
8c694914 2491 else
b34976b6 2492 unresolved_reloc = FALSE;
252b5132
RH		 2493 }
2494 else
2495 {
ffb2e45b
AM		 2496 if (local_got_offsets == NULL)
2497 abort ();
252b5132
RH		 2498
2499 off = local_got_offsets[r_symndx];
2500
2501 /* The offset must always be a multiple of 4. We use
83be169b
AM		 2502 the least significant bit to record whether we have
2503 already generated the necessary reloc. */
252b5132
RH		 2504 if ((off & 1) != 0)
2505 off &= ~1;
2506 else
2507 {
6725bdbf 2508 bfd_put_32 (output_bfd, relocation,
6de2ae4a 2509 htab->elf.sgot->contents + off);
e133d005 2510 local_got_offsets[r_symndx] |= 1;
252b5132 2511
0e1862bb 2512 if (bfd_link_pic (info))
e133d005 2513 relative_reloc = TRUE;
252b5132 2514 }
252b5132
RH		 2515 }
2516
e133d005
L		 2517 if (relative_reloc)
2518 {
2519 asection *s;
2520 Elf_Internal_Rela outrel;
2521
2522 s = htab->elf.srelgot;
2523 if (s == NULL)
2524 abort ();
2525
2526 outrel.r_offset = (htab->elf.sgot->output_section->vma
2527 + htab->elf.sgot->output_offset
2528 + off);
2529 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2530 elf_append_rel (output_bfd, s, &outrel);
2531 }
2532
ffb2e45b
AM		 2533 if (off >= (bfd_vma) -2)
2534 abort ();
2535
74d7f0aa
L		 2536 relocation = (htab->elf.sgot->output_section->vma
2537 + htab->elf.sgot->output_offset + off);
2a568401
L		 2538 if (rel->r_offset > 1
2539 && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5
2540 && *(contents + rel->r_offset - 2) != 0x8d)
74d7f0aa
L		 2541 {
2542 if (bfd_link_pic (info))
2543 {
2544 /* For PIC, disallow R_386_GOT32 without a base
2a568401
L		 2545 register, except for "lea foo@GOT, %reg", since
2546 we don't know what the GOT base is. */
74d7f0aa
L		 2547 const char *name;
2548
712ec279 2549disallow_got32:
a5def14f 2550 if (h == NULL || h->root.root.string == NULL)
74d7f0aa
L		 2551 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2552 NULL);
2553 else
2554 name = h->root.root.string;
2555
4eca0228 2556 _bfd_error_handler
695344c0 2557 /* xgettext:c-format */
871b3ab2 2558 (_("%pB: direct GOT relocation %s against `%s'"
63a5468a
AM		 2559 " without base register can not be used"
2560 " when making a shared object"),
712ec279 2561 input_bfd, howto->name, name);
74d7f0aa
L		 2562 bfd_set_error (bfd_error_bad_value);
2563 return FALSE;
2564 }
2565 }
2566 else
2567 {
2568 /* Subtract the .got.plt section address only with a base
2569 register. */
2570 relocation -= (htab->elf.sgotplt->output_section->vma
2571 + htab->elf.sgotplt->output_offset);
2572 }
2573
252b5132
RH		 2574 break;
2575
2576 case R_386_GOTOFF:
2577 /* Relocation is relative to the start of the global offset
2578 table. */
2579
3d949995
L		 2580 /* Check to make sure it isn't a protected function or data
2581 symbol for shared library since it may not be local when
2582 used as function address or with copy relocation. We also
e3c0e327 2583 need to make sure that a symbol is referenced locally. */
0e1862bb 2584 if (!bfd_link_executable (info) && h)
90f487df 2585 {
41bed6dd
L		 2586 if (!h->def_regular)
2587 {
2588 const char *v;
2589
2590 switch (ELF_ST_VISIBILITY (h->other))
2591 {
2592 case STV_HIDDEN:
2593 v = _("hidden symbol");
2594 break;
2595 case STV_INTERNAL:
2596 v = _("internal symbol");
2597 break;
2598 case STV_PROTECTED:
2599 v = _("protected symbol");
2600 break;
2601 default:
2602 v = _("symbol");
2603 break;
2604 }
2605
4eca0228 2606 _bfd_error_handler
695344c0 2607 /* xgettext:c-format */
871b3ab2 2608 (_("%pB: relocation R_386_GOTOFF against undefined %s"
63a5468a 2609 " `%s' can not be used when making a shared object"),
41bed6dd
L		 2610 input_bfd, v, h->root.root.string);
2611 bfd_set_error (bfd_error_bad_value);
2612 return FALSE;
2613 }
6999821f 2614 else if (!SYMBOL_REFERENCES_LOCAL_P (info, h)
3d949995
L		 2615 && (h->type == STT_FUNC
2616 || h->type == STT_OBJECT)
41bed6dd
L		 2617 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2618 {
4eca0228 2619 _bfd_error_handler
695344c0 2620 /* xgettext:c-format */
871b3ab2 2621 (_("%pB: relocation R_386_GOTOFF against protected %s"
63a5468a 2622 " `%s' can not be used when making a shared object"),
3d949995
L		 2623 input_bfd,
2624 h->type == STT_FUNC ? "function" : "data",
2625 h->root.root.string);
41bed6dd
L		 2626 bfd_set_error (bfd_error_bad_value);
2627 return FALSE;
2628 }
90f487df
L		 2629 }
2630
8c37241b
JJ		 2631 /* Note that sgot is not involved in this
2632 calculation. We always want the start of .got.plt. If we
2633 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 2634 permitted by the ABI, we might have to change this
2635 calculation. */
6de2ae4a
L		 2636 relocation -= htab->elf.sgotplt->output_section->vma
2637 + htab->elf.sgotplt->output_offset;
252b5132
RH		 2638 break;
2639
2640 case R_386_GOTPC:
2641 /* Use global offset table as symbol value. */
6de2ae4a
L		 2642 relocation = htab->elf.sgotplt->output_section->vma
2643 + htab->elf.sgotplt->output_offset;
b34976b6 2644 unresolved_reloc = FALSE;
252b5132
RH		 2645 break;
2646
2647 case R_386_PLT32:
2648 /* Relocation is to the entry for this symbol in the
2649 procedure linkage table. */
2650
dd5724d5 2651 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 2652 without using the procedure linkage table. */
252b5132
RH		 2653 if (h == NULL)
2654 break;
2655
dd7e64d4
L		 2656 if ((h->plt.offset == (bfd_vma) -1
2657 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 2658 || htab->elf.splt == NULL)
252b5132
RH		 2659 {
2660 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 2661 happens when statically linking PIC code, or when
2662 using -Bsymbolic. */
252b5132
RH		 2663 break;
2664 }
2665
dd7e64d4
L		 2666 if (h->plt.offset != (bfd_vma) -1)
2667 {
ee2fdd6f
L		 2668 if (htab->plt_second != NULL)
2669 {
2670 resolved_plt = htab->plt_second;
2671 plt_offset = eh->plt_second.offset;
2672 }
2673 else
2674 {
2675 resolved_plt = htab->elf.splt;
2676 plt_offset = h->plt.offset;
2677 }
dd7e64d4
L		 2678 }
2679 else
2680 {
2681 resolved_plt = htab->plt_got;
2682 plt_offset = eh->plt_got.offset;
2683 }
2684
2685 relocation = (resolved_plt->output_section->vma
2686 + resolved_plt->output_offset
2687 + plt_offset);
b34976b6 2688 unresolved_reloc = FALSE;
252b5132
RH		 2689 break;
2690
1788fc08 2691 case R_386_SIZE32:
1788fc08
L		 2692 /* Set to symbol size. */
2693 relocation = st_size;
2694 /* Fall through. */
2695
252b5132
RH		 2696 case R_386_32:
2697 case R_386_PC32:
3348747a
NS		 2698 if ((input_section->flags & SEC_ALLOC) == 0
2699 || is_vxworks_tls)
ec338859
AM		 2700 break;
2701
aebcc8ff
L		 2702 if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
2703 FALSE, resolved_to_zero,
2704 (r_type == R_386_PC32)))
252b5132 2705 {
947216bf 2706 Elf_Internal_Rela outrel;
b34976b6 2707 bfd_boolean skip, relocate;
0c715baa 2708 asection *sreloc;
252b5132
RH		 2709
2710 /* When generating a shared object, these relocations
2711 are copied into the output file to be resolved at run
2712 time. */
2713
b34976b6
AM		 2714 skip = FALSE;
2715 relocate = FALSE;
252b5132 2716
c629eae0
JJ		 2717 outrel.r_offset =
2718 _bfd_elf_section_offset (output_bfd, info, input_section,
2719 rel->r_offset);
2720 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2721 skip = TRUE;
0bb2d96a 2722 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2723 skip = TRUE, relocate = TRUE;
252b5132
RH		 2724 outrel.r_offset += (input_section->output_section->vma
2725 + input_section->output_offset);
2726
2727 if (skip)
0bb2d96a 2728 memset (&outrel, 0, sizeof outrel);
e74399c4 2729 else if (COPY_INPUT_RELOC_P (info, h, r_type))
0bb2d96a 2730 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2731 else
2732 {
5a15f56f 2733 /* This symbol is local, or marked to become local. */
b34976b6 2734 relocate = TRUE;
5a15f56f 2735 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 2736 }
2737
cbe950e9 2738 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 2739
62d78908
L		 2740 if (sreloc == NULL || sreloc->contents == NULL)
2741 {
2742 r = bfd_reloc_notsupported;
2743 goto check_relocation_error;
2744 }
0c715baa 2745
59d6ffb2 2746 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 2747
2748 /* If this reloc is against an external symbol, we do
2749 not want to fiddle with the addend. Otherwise, we
2750 need to include the symbol value so that it becomes
2751 an addend for the dynamic reloc. */
0f88be7a 2752 if (! relocate)
252b5132
RH		 2753 continue;
2754 }
252b5132
RH		 2755 break;
2756
37e55690 2757 case R_386_TLS_IE:
0e1862bb 2758 if (!bfd_link_executable (info))
37e55690 2759 {
947216bf 2760 Elf_Internal_Rela outrel;
37e55690 2761 asection *sreloc;
37e55690
JJ		 2762
2763 outrel.r_offset = rel->r_offset
2764 + input_section->output_section->vma
2765 + input_section->output_offset;
2766 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2767 sreloc = elf_section_data (input_section)->sreloc;
2768 if (sreloc == NULL)
2769 abort ();
59d6ffb2 2770 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 2771 }
2772 /* Fall through */
2773
13ae64f3 2774 case R_386_TLS_GD:
67a4f2b7
AO		 2775 case R_386_TLS_GOTDESC:
2776 case R_386_TLS_DESC_CALL:
13ae64f3 2777 case R_386_TLS_IE_32:
37e55690 2778 case R_386_TLS_GOTIE:
13ae64f3
JJ		 2779 tls_type = GOT_UNKNOWN;
2780 if (h == NULL && local_got_offsets)
0afcef53 2781 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
13ae64f3 2782 else if (h != NULL)
0afcef53 2783 tls_type = elf_x86_hash_entry(h)->tls_type;
37e55690
JJ		 2784 if (tls_type == GOT_TLS_IE)
2785 tls_type = GOT_TLS_IE_NEG;
142411ca 2786
419414ea 2787 r_type_tls = r_type;
142411ca
L		 2788 if (! elf_i386_tls_transition (info, input_bfd,
2789 input_section, contents,
2790 symtab_hdr, sym_hashes,
419414ea 2791 &r_type_tls, tls_type, rel,
bedfd056 2792 relend, h, r_symndx, TRUE))
142411ca 2793 return FALSE;
13ae64f3 2794
419414ea 2795 if (r_type_tls == R_386_TLS_LE_32)
13ae64f3 2796 {
82e51918 2797 BFD_ASSERT (! unresolved_reloc);
419414ea 2798 if (r_type == R_386_TLS_GD)
13ae64f3 2799 {
142411ca 2800 unsigned int type;
13ae64f3
JJ		 2801 bfd_vma roff;
2802
2803 /* GD->LE transition. */
6eaa7fb5 2804 type = *(contents + rel->r_offset - 2);
13ae64f3
JJ		 2805 if (type == 0x04)
2806 {
6eaa7fb5
L		 2807 /* Change
2808 leal foo@tlsgd(,%ebx,1), %eax
2809 call ___tls_get_addr@PLT
2810 into:
2811 movl %gs:0, %eax
2812 subl $foo@tpoff, %eax
13ae64f3 2813 (6 byte form of subl). */
142411ca 2814 roff = rel->r_offset + 5;
13ae64f3
JJ		 2815 }
2816 else
2817 {
6eaa7fb5
L		 2818 /* Change
2819 leal foo@tlsgd(%ebx), %eax
2820 call ___tls_get_addr@PLT
2821 nop
2822 or
2823 leal foo@tlsgd(%reg), %eax
2824 call *___tls_get_addr@GOT(%reg)
2825 which may be converted to
2826 addr32 call ___tls_get_addr
2827 into:
2828 movl %gs:0, %eax; subl $foo@tpoff, %eax
142411ca 2829 (6 byte form of subl). */
142411ca 2830 roff = rel->r_offset + 6;
13ae64f3 2831 }
6eaa7fb5
L		 2832 memcpy (contents + roff - 8,
2833 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
eb4ff4d6 2834 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 2835 contents + roff);
6eaa7fb5 2836 /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */
13ae64f3 2837 rel++;
60f2e42e 2838 wrel++;
13ae64f3
JJ		 2839 continue;
2840 }
419414ea 2841 else if (r_type == R_386_TLS_GOTDESC)
67a4f2b7
AO		 2842 {
2843 /* GDesc -> LE transition.
2844 It's originally something like:
2845 leal x@tlsdesc(%ebx), %eax
2846
2847 leal x@ntpoff, %eax
2848
2849 Registers other than %eax may be set up here. */
2850
142411ca 2851 unsigned int val;
67a4f2b7
AO		 2852 bfd_vma roff;
2853
67a4f2b7 2854 roff = rel->r_offset;
67a4f2b7 2855 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 2856
2857 /* Now modify the instruction as appropriate. */
2858 /* aoliva FIXME: remove the above and xor the byte
2859 below with 0x86. */
2860 bfd_put_8 (output_bfd, val ^ 0x86,
2861 contents + roff - 1);
eb4ff4d6 2862 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 2863 contents + roff);
2864 continue;
2865 }
419414ea 2866 else if (r_type == R_386_TLS_DESC_CALL)
67a4f2b7
AO		 2867 {
2868 /* GDesc -> LE transition.
2869 It's originally:
2870 call *(%eax)
2871 Turn it into:
142411ca 2872 xchg %ax,%ax */
67a4f2b7 2873
67a4f2b7 2874 bfd_vma roff;
6bbec505 2875
67a4f2b7 2876 roff = rel->r_offset;
10efb593 2877 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 2878 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
2879 continue;
2880 }
419414ea 2881 else if (r_type == R_386_TLS_IE)
13ae64f3 2882 {
142411ca 2883 unsigned int val;
13ae64f3
JJ		 2884
2885 /* IE->LE transition:
37e55690
JJ		 2886 Originally it can be one of:
2887 movl foo, %eax
2888 movl foo, %reg
2889 addl foo, %reg
2890 We change it into:
2891 movl $foo, %eax
2892 movl $foo, %reg
2893 addl $foo, %reg. */
37e55690 2894 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 2895 if (val == 0xa1)
2896 {
2897 /* movl foo, %eax. */
55fd94b0
AM		 2898 bfd_put_8 (output_bfd, 0xb8,
2899 contents + rel->r_offset - 1);
37e55690 2900 }
299bf759 2901 else
37e55690 2902 {
142411ca
L		 2903 unsigned int type;
2904
55fd94b0
AM		 2905 type = bfd_get_8 (input_bfd,
2906 contents + rel->r_offset - 2);
299bf759 2907 switch (type)
26e41594 2908 {
299bf759
L		 2909 case 0x8b:
2910 /* movl */
299bf759
L		 2911 bfd_put_8 (output_bfd, 0xc7,
2912 contents + rel->r_offset - 2);
2913 bfd_put_8 (output_bfd,
2914 0xc0 | ((val >> 3) & 7),
2915 contents + rel->r_offset - 1);
2916 break;
2917 case 0x03:
2918 /* addl */
299bf759
L		 2919 bfd_put_8 (output_bfd, 0x81,
2920 contents + rel->r_offset - 2);
2921 bfd_put_8 (output_bfd,
2922 0xc0 | ((val >> 3) & 7),
2923 contents + rel->r_offset - 1);
2924 break;
2925 default:
2926 BFD_FAIL ();
2927 break;
26e41594 2928 }
37e55690 2929 }
eb4ff4d6 2930 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 2931 contents + rel->r_offset);
2932 continue;
2933 }
2934 else
2935 {
2936 unsigned int val, type;
2937
2938 /* {IE_32,GOTIE}->LE transition:
2939 Originally it can be one of:
13ae64f3 2940 subl foo(%reg1), %reg2
13ae64f3 2941 movl foo(%reg1), %reg2
37e55690 2942 addl foo(%reg1), %reg2
13ae64f3
JJ		 2943 We change it into:
2944 subl $foo, %reg2
37e55690
JJ		 2945 movl $foo, %reg2 (6 byte form)
2946 addl $foo, %reg2. */
13ae64f3
JJ		 2947 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2948 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 2949 if (type == 0x8b)
2950 {
2951 /* movl */
13ae64f3
JJ		 2952 bfd_put_8 (output_bfd, 0xc7,
2953 contents + rel->r_offset - 2);
2954 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2955 contents + rel->r_offset - 1);
2956 }
2957 else if (type == 0x2b)
2958 {
2959 /* subl */
13ae64f3
JJ		 2960 bfd_put_8 (output_bfd, 0x81,
2961 contents + rel->r_offset - 2);
2962 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
2963 contents + rel->r_offset - 1);
2964 }
37e55690
JJ		 2965 else if (type == 0x03)
2966 {
2967 /* addl */
2968 bfd_put_8 (output_bfd, 0x81,
2969 contents + rel->r_offset - 2);
2970 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2971 contents + rel->r_offset - 1);
2972 }
13ae64f3
JJ		 2973 else
2974 BFD_FAIL ();
419414ea 2975 if (r_type == R_386_TLS_GOTIE)
eb4ff4d6 2976 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 2977 contents + rel->r_offset);
2978 else
eb4ff4d6 2979 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 2980 contents + rel->r_offset);
13ae64f3
JJ		 2981 continue;
2982 }
2983 }
2984
6de2ae4a 2985 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 2986 abort ();
2987
2988 if (h != NULL)
67a4f2b7
AO		 2989 {
2990 off = h->got.offset;
0afcef53 2991 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 2992 }
13ae64f3
JJ		 2993 else
2994 {
2995 if (local_got_offsets == NULL)
2996 abort ();
2997
2998 off = local_got_offsets[r_symndx];
67a4f2b7 2999 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 3000 }
3001
3002 if ((off & 1) != 0)
3003 off &= ~1;
26e41594 3004 else
13ae64f3 3005 {
947216bf 3006 Elf_Internal_Rela outrel;
91d6fa6a 3007 int dr_type;
67a4f2b7 3008 asection *sreloc;
13ae64f3 3009
6de2ae4a 3010 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 3011 abort ();
3012
67a4f2b7
AO		 3013 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3014
3015 if (GOT_TLS_GDESC_P (tls_type))
3016 {
59d6ffb2 3017 bfd_byte *loc;
67a4f2b7
AO		 3018 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3019 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 3020 <= htab->elf.sgotplt->size);
3021 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3022 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3023 + offplt
3024 + htab->sgotplt_jump_table_size);
6de2ae4a 3025 sreloc = htab->elf.srelplt;
67a4f2b7 3026 loc = sreloc->contents;
765e526c 3027 loc += (htab->next_tls_desc_index++
5ae0bfb6 3028 * sizeof (Elf32_External_Rel));
67a4f2b7 3029 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 3030 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 3031 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3032 if (indx == 0)
3033 {
3034 BFD_ASSERT (! unresolved_reloc);
3035 bfd_put_32 (output_bfd,
0afcef53 3036 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3037 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3038 + htab->sgotplt_jump_table_size + 4);
3039 }
3040 else
3041 {
3042 bfd_put_32 (output_bfd, 0,
6de2ae4a 3043 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3044 + htab->sgotplt_jump_table_size + 4);
3045 }
3046 }
3047
6de2ae4a 3048 sreloc = htab->elf.srelgot;
67a4f2b7 3049
6de2ae4a
L		 3050 outrel.r_offset = (htab->elf.sgot->output_section->vma
3051 + htab->elf.sgot->output_offset + off);
13ae64f3 3052
67a4f2b7 3053 if (GOT_TLS_GD_P (tls_type))
13ae64f3 3054 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 3055 else if (GOT_TLS_GDESC_P (tls_type))
3056 goto dr_done;
37e55690
JJ		 3057 else if (tls_type == GOT_TLS_IE_POS)
3058 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 3059 else
3060 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 3061
37e55690 3062 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6 3063 bfd_put_32 (output_bfd,
0afcef53 3064 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3065 htab->elf.sgot->contents + off);
37e55690 3066 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 3067 bfd_put_32 (output_bfd,
0afcef53 3068 _bfd_x86_elf_dtpoff_base (info) - relocation,
6de2ae4a 3069 htab->elf.sgot->contents + off);
67a4f2b7 3070 else if (dr_type != R_386_TLS_DESC)
c366c25e 3071 bfd_put_32 (output_bfd, 0,
6de2ae4a 3072 htab->elf.sgot->contents + off);
13ae64f3 3073 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 3074
59d6ffb2 3075 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 3076
67a4f2b7 3077 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 3078 {
3079 if (indx == 0)
3080 {
07d6d2b8 3081 BFD_ASSERT (! unresolved_reloc);
13ae64f3 3082 bfd_put_32 (output_bfd,
0afcef53 3083 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3084 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3085 }
3086 else
3087 {
3088 bfd_put_32 (output_bfd, 0,
6de2ae4a 3089 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3090 outrel.r_info = ELF32_R_INFO (indx,
3091 R_386_TLS_DTPOFF32);
3092 outrel.r_offset += 4;
59d6ffb2 3093 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 3094 }
3095 }
37e55690
JJ		 3096 else if (tls_type == GOT_TLS_IE_BOTH)
3097 {
3098 bfd_put_32 (output_bfd,
eb4ff4d6 3099 (indx == 0
0afcef53 3100 ? relocation - _bfd_x86_elf_dtpoff_base (info)
eb4ff4d6 3101 : 0),
6de2ae4a 3102 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 3103 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3104 outrel.r_offset += 4;
59d6ffb2 3105 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 3106 }
13ae64f3 3107
67a4f2b7 3108 dr_done:
13ae64f3
JJ		 3109 if (h != NULL)
3110 h->got.offset |= 1;
3111 else
3112 local_got_offsets[r_symndx] |= 1;
3113 }
3114
67a4f2b7
AO		 3115 if (off >= (bfd_vma) -2
3116 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 3117 abort ();
419414ea
L		 3118 if (r_type_tls == R_386_TLS_GOTDESC
3119 || r_type_tls == R_386_TLS_DESC_CALL)
67a4f2b7
AO		 3120 {
3121 relocation = htab->sgotplt_jump_table_size + offplt;
3122 unresolved_reloc = FALSE;
3123 }
419414ea 3124 else if (r_type_tls == r_type)
13ae64f3 3125 {
6de2ae4a
L		 3126 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
3127 + htab->elf.sgotplt->output_offset;
3128 relocation = htab->elf.sgot->output_section->vma
3129 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 3130 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3131 && tls_type == GOT_TLS_IE_BOTH)
3132 relocation += 4;
3133 if (r_type == R_386_TLS_IE)
8c37241b 3134 relocation += g_o_t;
b34976b6 3135 unresolved_reloc = FALSE;
13ae64f3 3136 }
419414ea 3137 else if (r_type == R_386_TLS_GD)
13ae64f3
JJ		 3138 {
3139 unsigned int val, type;
3140 bfd_vma roff;
3141
3142 /* GD->IE transition. */
6eaa7fb5
L		 3143 type = *(contents + rel->r_offset - 2);
3144 val = *(contents + rel->r_offset - 1);
13ae64f3
JJ		 3145 if (type == 0x04)
3146 {
6eaa7fb5
L		 3147 /* Change
3148 leal foo@tlsgd(,%ebx,1), %eax
3149 call ___tls_get_addr@PLT
3150 into:
3151 movl %gs:0, %eax
3152 subl $foo@gottpoff(%ebx), %eax. */
13ae64f3 3153 val >>= 3;
142411ca 3154 roff = rel->r_offset - 3;
13ae64f3
JJ		 3155 }
3156 else
3157 {
6eaa7fb5
L		 3158 /* Change
3159 leal foo@tlsgd(%ebx), %eax
3160 call ___tls_get_addr@PLT
3161 nop
3162 or
3163 leal foo@tlsgd(%reg), %eax
3164 call *___tls_get_addr@GOT(%reg)
3165 which may be converted to
3166 addr32 call ___tls_get_addr
3167 into:
3168 movl %gs:0, %eax;
3169 subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 3170 roff = rel->r_offset - 2;
3171 }
3172 memcpy (contents + roff,
3173 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3174 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 3175 /* If foo is used only with foo@gotntpoff(%reg) and
3176 foo@indntpoff, but not with foo@gottpoff(%reg), change
3177 subl $foo@gottpoff(%reg), %eax
3178 into:
3179 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 3180 if (tls_type == GOT_TLS_IE_POS)
3181 contents[roff + 6] = 0x03;
8c37241b 3182 bfd_put_32 (output_bfd,
6de2ae4a
L		 3183 htab->elf.sgot->output_section->vma
3184 + htab->elf.sgot->output_offset + off
3185 - htab->elf.sgotplt->output_section->vma
3186 - htab->elf.sgotplt->output_offset,
13ae64f3 3187 contents + roff + 8);
6eaa7fb5 3188 /* Skip R_386_PLT32 and R_386_GOT32X. */
13ae64f3 3189 rel++;
60f2e42e 3190 wrel++;
13ae64f3
JJ		 3191 continue;
3192 }
419414ea 3193 else if (r_type == R_386_TLS_GOTDESC)
67a4f2b7
AO		 3194 {
3195 /* GDesc -> IE transition.
3196 It's originally something like:
3197 leal x@tlsdesc(%ebx), %eax
3198
3199 Change it to:
142411ca 3200 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 3201 or:
3202 movl x@gottpoff(%ebx), %eax # before negl %eax
3203
3204 Registers other than %eax may be set up here. */
3205
67a4f2b7
AO		 3206 bfd_vma roff;
3207
3208 /* First, make sure it's a leal adding ebx to a 32-bit
3209 offset into any register, although it's probably
3210 almost always going to be eax. */
3211 roff = rel->r_offset;
67a4f2b7
AO		 3212
3213 /* Now modify the instruction as appropriate. */
3214 /* To turn a leal into a movl in the form we use it, it
3215 suffices to change the first byte from 0x8d to 0x8b.
3216 aoliva FIXME: should we decide to keep the leal, all
3217 we have to do is remove the statement below, and
3218 adjust the relaxation of R_386_TLS_DESC_CALL. */
3219 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3220
3221 if (tls_type == GOT_TLS_IE_BOTH)
3222 off += 4;
3223
3224 bfd_put_32 (output_bfd,
6de2ae4a
L		 3225 htab->elf.sgot->output_section->vma
3226 + htab->elf.sgot->output_offset + off
3227 - htab->elf.sgotplt->output_section->vma
3228 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 3229 contents + roff);
3230 continue;
3231 }
419414ea 3232 else if (r_type == R_386_TLS_DESC_CALL)
67a4f2b7
AO		 3233 {
3234 /* GDesc -> IE transition.
3235 It's originally:
3236 call *(%eax)
3237
3238 Change it to:
142411ca 3239 xchg %ax,%ax
67a4f2b7
AO		 3240 or
3241 negl %eax
3242 depending on how we transformed the TLS_GOTDESC above.
3243 */
3244
67a4f2b7
AO		 3245 bfd_vma roff;
3246
67a4f2b7 3247 roff = rel->r_offset;
67a4f2b7
AO		 3248
3249 /* Now modify the instruction as appropriate. */
3250 if (tls_type != GOT_TLS_IE_NEG)
3251 {
10efb593
L		 3252 /* xchg %ax,%ax */
3253 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3254 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3255 }
3256 else
3257 {
3258 /* negl %eax */
3259 bfd_put_8 (output_bfd, 0xf7, contents + roff);
3260 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3261 }
3262
3263 continue;
3264 }
3265 else
3266 BFD_ASSERT (FALSE);
13ae64f3
JJ		 3267 break;
3268
3269 case R_386_TLS_LDM:
142411ca
L		 3270 if (! elf_i386_tls_transition (info, input_bfd,
3271 input_section, contents,
3272 symtab_hdr, sym_hashes,
3273 &r_type, GOT_UNKNOWN, rel,
bedfd056 3274 relend, h, r_symndx, TRUE))
142411ca 3275 return FALSE;
13ae64f3 3276
142411ca
L		 3277 if (r_type != R_386_TLS_LDM)
3278 {
6eaa7fb5
L		 3279 /* LD->LE transition. Change
3280 leal foo@tlsldm(%ebx) %eax
3281 call ___tls_get_addr@PLT
3282 into:
3283 movl %gs:0, %eax
3284 nop
3285 leal 0(%esi,1), %esi
3286 or change
3287 leal foo@tlsldm(%reg) %eax
3288 call *___tls_get_addr@GOT(%reg)
3289 which may be converted to
3290 addr32 call ___tls_get_addr
3291 into:
3292 movl %gs:0, %eax
3293 leal 0(%esi), %esi */
142411ca 3294 BFD_ASSERT (r_type == R_386_TLS_LE_32);
6eaa7fb5
L		 3295 if (*(contents + rel->r_offset + 4) == 0xff
3296 || *(contents + rel->r_offset + 4) == 0x67)
3297 memcpy (contents + rel->r_offset - 2,
3298 "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12);
3299 else
3300 memcpy (contents + rel->r_offset - 2,
3301 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 3302 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 3303 rel++;
60f2e42e 3304 wrel++;
13ae64f3
JJ		 3305 continue;
3306 }
3307
6de2ae4a 3308 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3309 abort ();
3310
0afcef53 3311 off = htab->tls_ld_or_ldm_got.offset;
13ae64f3
JJ		 3312 if (off & 1)
3313 off &= ~1;
3314 else
3315 {
947216bf 3316 Elf_Internal_Rela outrel;
13ae64f3 3317
6de2ae4a 3318 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 3319 abort ();
3320
6de2ae4a
L		 3321 outrel.r_offset = (htab->elf.sgot->output_section->vma
3322 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 3323
3324 bfd_put_32 (output_bfd, 0,
6de2ae4a 3325 htab->elf.sgot->contents + off);
13ae64f3 3326 bfd_put_32 (output_bfd, 0,
6de2ae4a 3327 htab->elf.sgot->contents + off + 4);
13ae64f3 3328 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 3329 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
0afcef53 3330 htab->tls_ld_or_ldm_got.offset |= 1;
13ae64f3 3331 }
6de2ae4a
L		 3332 relocation = htab->elf.sgot->output_section->vma
3333 + htab->elf.sgot->output_offset + off
3334 - htab->elf.sgotplt->output_section->vma
3335 - htab->elf.sgotplt->output_offset;
b34976b6 3336 unresolved_reloc = FALSE;
13ae64f3
JJ		 3337 break;
3338
3339 case R_386_TLS_LDO_32:
0e1862bb
L		 3340 if (!bfd_link_executable (info)
3341 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3342 relocation -= _bfd_x86_elf_dtpoff_base (info);
13ae64f3
JJ		 3343 else
3344 /* When converting LDO to LE, we must negate. */
eb4ff4d6 3345 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 3346 break;
3347
3348 case R_386_TLS_LE_32:
13ae64f3 3349 case R_386_TLS_LE:
0e1862bb 3350 if (!bfd_link_executable (info))
37e55690 3351 {
947216bf 3352 Elf_Internal_Rela outrel;
37e55690 3353 asection *sreloc;
37e55690
JJ		 3354
3355 outrel.r_offset = rel->r_offset
3356 + input_section->output_section->vma
3357 + input_section->output_offset;
3358 if (h != NULL && h->dynindx != -1)
3359 indx = h->dynindx;
3360 else
3361 indx = 0;
3362 if (r_type == R_386_TLS_LE_32)
3363 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
3364 else
3365 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3366 sreloc = elf_section_data (input_section)->sreloc;
3367 if (sreloc == NULL)
3368 abort ();
59d6ffb2 3369 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3370 if (indx)
3371 continue;
3372 else if (r_type == R_386_TLS_LE_32)
0afcef53 3373 relocation = _bfd_x86_elf_dtpoff_base (info) - relocation;
37e55690 3374 else
0afcef53 3375 relocation -= _bfd_x86_elf_dtpoff_base (info);
37e55690
JJ		 3376 }
3377 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 3378 relocation = elf_i386_tpoff (info, relocation);
37e55690 3379 else
eb4ff4d6 3380 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 3381 break;
3382
252b5132
RH		 3383 default:
3384 break;
3385 }
3386
239e1f3a
AM		 3387 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3388 because such sections are not SEC_ALLOC and thus ld.so will
3389 not process them. */
8c694914 3390 if (unresolved_reloc
239e1f3a 3391 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3392 && h->def_dynamic)
3393 && _bfd_elf_section_offset (output_bfd, info, input_section,
3394 rel->r_offset) != (bfd_vma) -1)
6a30718d 3395 {
4eca0228 3396 _bfd_error_handler
695344c0 3397 /* xgettext:c-format */
2dcf00ce 3398 (_("%pB(%pA+%#" PRIx64 "): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3399 input_bfd,
3400 input_section,
2dcf00ce 3401 (uint64_t) rel->r_offset,
843fe662 3402 howto->name,
6a30718d 3403 h->root.root.string);
b34976b6 3404 return FALSE;
6a30718d 3405 }
83be169b 3406
cbe950e9 3407do_relocation:
252b5132
RH		 3408 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3409 contents, rel->r_offset,
55fd94b0 3410 relocation, 0);
252b5132 3411
62d78908 3412check_relocation_error:
cf5c0c5b 3413 if (r != bfd_reloc_ok)
252b5132 3414 {
cf5c0c5b 3415 const char *name;
ffb2e45b 3416
cf5c0c5b
AM		 3417 if (h != NULL)
3418 name = h->root.root.string;
3419 else
3420 {
3421 name = bfd_elf_string_from_elf_section (input_bfd,
3422 symtab_hdr->sh_link,
3423 sym->st_name);
3424 if (name == NULL)
b34976b6 3425 return FALSE;
cf5c0c5b
AM		 3426 if (*name == '\0')
3427 name = bfd_section_name (input_bfd, sec);
3428 }
ffb2e45b 3429
cf5c0c5b 3430 if (r == bfd_reloc_overflow)
1a72702b
AM		 3431 (*info->callbacks->reloc_overflow)
3432 (info, (h ? &h->root : NULL), name, howto->name,
3433 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
cf5c0c5b
AM		 3434 else
3435 {
4eca0228 3436 _bfd_error_handler
695344c0 3437 /* xgettext:c-format */
2dcf00ce 3438 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3439 input_bfd, input_section,
2dcf00ce 3440 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3441 return FALSE;
cf5c0c5b 3442 }
252b5132 3443 }
60f2e42e
L		 3444
3445 if (wrel != rel)
3446 *wrel = *rel;
3447 }
3448
3449 if (wrel != rel)
3450 {
3451 Elf_Internal_Shdr *rel_hdr;
3452 size_t deleted = rel - wrel;
3453
3454 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3455 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3456 if (rel_hdr->sh_size == 0)
3457 {
3458 /* It is too late to remove an empty reloc section. Leave
3459 one NONE reloc.
3460 ??? What is wrong with an empty section??? */
3461 rel_hdr->sh_size = rel_hdr->sh_entsize;
3462 deleted -= 1;
3463 }
3464 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3465 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3466 input_section->reloc_count -= deleted;
252b5132
RH		 3467 }
3468
b34976b6 3469 return TRUE;
252b5132
RH		 3470}
3471
3472/* Finish up dynamic symbol handling. We set the contents of various
3473 dynamic sections here. */
3474
b34976b6 3475static bfd_boolean
55fd94b0
AM		 3476elf_i386_finish_dynamic_symbol (bfd *output_bfd,
3477 struct bfd_link_info *info,
3478 struct elf_link_hash_entry *h,
3479 Elf_Internal_Sym *sym)
252b5132 3480{
0afcef53 3481 struct elf_x86_link_hash_table *htab;
25e762b9 3482 unsigned plt_entry_size;
0afcef53 3483 struct elf_x86_link_hash_entry *eh;
aec6b87e 3484 bfd_boolean local_undefweak;
ee2fdd6f 3485 bfd_boolean use_plt_second;
252b5132 3486
0afcef53 3487 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 3488 if (htab == NULL)
3489 return FALSE;
252b5132 3490
765e526c 3491 plt_entry_size = htab->plt.plt_entry_size;
25e762b9 3492
ee2fdd6f
L		 3493 /* Use the second PLT section only if there is .plt section. */
3494 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
3495
0afcef53 3496 eh = (struct elf_x86_link_hash_entry *) h;
e133d005
L		 3497 if (eh->no_finish_dynamic_symbol)
3498 abort ();
dd7e64d4 3499
aec6b87e
L		 3500 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3501 resolved undefined weak symbols in executable so that their
3502 references have value 0 at run-time. */
c5bce5c6 3503 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3504
252b5132
RH		 3505 if (h->plt.offset != (bfd_vma) -1)
3506 {
ee2fdd6f 3507 bfd_vma plt_index, plt_offset;
252b5132 3508 bfd_vma got_offset;
947216bf
AM		 3509 Elf_Internal_Rela rel;
3510 bfd_byte *loc;
ee2fdd6f 3511 asection *plt, *resolved_plt, *gotplt, *relplt;
cbe950e9
L		 3512
3513 /* When building a static executable, use .iplt, .igot.plt and
3514 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3515 if (htab->elf.splt != NULL)
cbe950e9 3516 {
6de2ae4a
L		 3517 plt = htab->elf.splt;
3518 gotplt = htab->elf.sgotplt;
3519 relplt = htab->elf.srelplt;
cbe950e9
L		 3520 }
3521 else
3522 {
6de2ae4a
L		 3523 plt = htab->elf.iplt;
3524 gotplt = htab->elf.igotplt;
3525 relplt = htab->elf.irelplt;
cbe950e9 3526 }
252b5132 3527
f3180fa9 3528 VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)
252b5132
RH		 3529
3530 /* Get the index in the procedure linkage table which
3531 corresponds to this symbol. This is the index of this symbol
3532 in all the symbols for which we are making plt entries. The
cbe950e9 3533 first entry in the procedure linkage table is reserved.
252b5132 3534
cbe950e9 3535 Get the offset into the .got table of the entry that
252b5132 3536 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 3537 The first three are reserved.
6bbec505 3538
cbe950e9
L		 3539 For static executables, we don't reserve anything. */
3540
6de2ae4a 3541 if (plt == htab->elf.splt)
cbe950e9 3542 {
f604c2a2 3543 got_offset = (h->plt.offset / plt_entry_size
765e526c 3544 - htab->plt.has_plt0);
e1f98742 3545 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 3546 }
3547 else
3548 {
e1f98742
L		 3549 got_offset = h->plt.offset / plt_entry_size;
3550 got_offset = got_offset * 4;
cbe950e9 3551 }
252b5132 3552
f604c2a2
L		 3553 /* Fill in the entry in the procedure linkage table and update
3554 the first slot. */
765e526c 3555 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
f604c2a2 3556 plt_entry_size);
ee2fdd6f
L		 3557
3558 if (use_plt_second)
3559 {
3560 const bfd_byte *plt_entry;
3561 if (bfd_link_pic (info))
765e526c 3562 plt_entry = htab->non_lazy_plt->pic_plt_entry;
ee2fdd6f 3563 else
765e526c 3564 plt_entry = htab->non_lazy_plt->plt_entry;
ee2fdd6f 3565 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c 3566 plt_entry, htab->non_lazy_plt->plt_entry_size);
ee2fdd6f
L		 3567
3568 resolved_plt = htab->plt_second;
3569 plt_offset = eh->plt_second.offset;
3570 }
3571 else
3572 {
3573 resolved_plt = plt;
3574 plt_offset = h->plt.offset;
3575 }
3576
0e1862bb 3577 if (! bfd_link_pic (info))
252b5132 3578 {
252b5132 3579 bfd_put_32 (output_bfd,
cbe950e9
L		 3580 (gotplt->output_section->vma
3581 + gotplt->output_offset
252b5132 3582 + got_offset),
ee2fdd6f 3583 resolved_plt->contents + plt_offset
07d6d2b8 3584 + htab->plt.plt_got_offset);
eac338cf 3585
851b6fa1 3586 if (htab->target_os == is_vxworks)
eac338cf
PB		 3587 {
3588 int s, k, reloc_index;
3589
3590 /* Create the R_386_32 relocation referencing the GOT
3591 for this PLT entry. */
3592
3593 /* S: Current slot number (zero-based). */
765e526c 3594 s = ((h->plt.offset - htab->plt.plt_entry_size)
07d6d2b8 3595 / htab->plt.plt_entry_size);
eac338cf 3596 /* K: Number of relocations for PLTResolve. */
0e1862bb 3597 if (bfd_link_pic (info))
eac338cf
PB		 3598 k = PLTRESOLVE_RELOCS_SHLIB;
3599 else
3600 k = PLTRESOLVE_RELOCS;
3601 /* Skip the PLTresolve relocations, and the relocations for
3602 the other PLT slots. */
3603 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
765e526c 3604 loc = (htab->srelplt2->contents + reloc_index
eac338cf
PB		 3605 * sizeof (Elf32_External_Rel));
3606
ee2fdd6f
L		 3607 rel.r_offset = (plt->output_section->vma
3608 + plt->output_offset
eac338cf 3609 + h->plt.offset + 2),
7325306f 3610 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3611 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3612
3613 /* Create the R_386_32 relocation referencing the beginning of
3614 the PLT for this GOT entry. */
6de2ae4a
L		 3615 rel.r_offset = (htab->elf.sgotplt->output_section->vma
3616 + htab->elf.sgotplt->output_offset
eac338cf 3617 + got_offset);
7325306f 3618 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 3619 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 3620 loc + sizeof (Elf32_External_Rel));
eac338cf 3621 }
252b5132
RH		 3622 }
3623 else
3624 {
252b5132 3625 bfd_put_32 (output_bfd, got_offset,
ee2fdd6f 3626 resolved_plt->contents + plt_offset
07d6d2b8 3627 + htab->plt.plt_got_offset);
252b5132
RH		 3628 }
3629
aec6b87e
L		 3630 /* Fill in the entry in the global offset table. Leave the entry
3631 as zero for undefined weak symbol in PIE. No PLT relocation
3632 against undefined weak symbol in PIE. */
3633 if (!local_undefweak)
cbe950e9 3634 {
765e526c 3635 if (htab->plt.has_plt0)
f604c2a2
L		 3636 bfd_put_32 (output_bfd,
3637 (plt->output_section->vma
3638 + plt->output_offset
3639 + h->plt.offset
765e526c 3640 + htab->lazy_plt->plt_lazy_offset),
f604c2a2 3641 gotplt->contents + got_offset);
252b5132 3642
aec6b87e
L		 3643 /* Fill in the entry in the .rel.plt section. */
3644 rel.r_offset = (gotplt->output_section->vma
3645 + gotplt->output_offset
3646 + got_offset);
cf1070f1 3647 if (PLT_LOCAL_IFUNC_P (info, h))
aec6b87e 3648 {
871b3ab2 3649 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 3650 h->root.root.string,
3651 h->root.u.def.section->owner);
3652
aec6b87e
L		 3653 /* If an STT_GNU_IFUNC symbol is locally defined, generate
3654 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
3655 in the .got.plt section. */
3656 bfd_put_32 (output_bfd,
3657 (h->root.u.def.value
3658 + h->root.u.def.section->output_section->vma
3659 + h->root.u.def.section->output_offset),
3660 gotplt->contents + got_offset);
3661 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3662 /* R_386_IRELATIVE comes last. */
3663 plt_index = htab->next_irelative_index--;
3664 }
3665 else
3666 {
3667 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
3668 plt_index = htab->next_jump_slot_index++;
3669 }
3670
3671 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
3672 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3673
f604c2a2
L		 3674 /* Don't fill the second and third slots in PLT entry for
3675 static executables nor without PLT0. */
765e526c 3676 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e
L		 3677 {
3678 bfd_put_32 (output_bfd,
3679 plt_index * sizeof (Elf32_External_Rel),
3680 plt->contents + h->plt.offset
765e526c 3681 + htab->lazy_plt->plt_reloc_offset);
f604c2a2
L		 3682 bfd_put_32 (output_bfd,
3683 - (h->plt.offset
765e526c 3684 + htab->lazy_plt->plt_plt_offset + 4),
f604c2a2 3685 (plt->contents + h->plt.offset
765e526c 3686 + htab->lazy_plt->plt_plt_offset));
aec6b87e 3687 }
e1f98742 3688 }
dd7e64d4
L		 3689 }
3690 else if (eh->plt_got.offset != (bfd_vma) -1)
3691 {
3692 bfd_vma got_offset, plt_offset;
3693 asection *plt, *got, *gotplt;
3694 const bfd_byte *got_plt_entry;
3695
dd7e64d4
L		 3696 /* Set the entry in the GOT procedure linkage table. */
3697 plt = htab->plt_got;
3698 got = htab->elf.sgot;
3699 gotplt = htab->elf.sgotplt;
3700 got_offset = h->got.offset;
3701
3702 if (got_offset == (bfd_vma) -1
3703 || plt == NULL
3704 || got == NULL
3705 || gotplt == NULL)
3706 abort ();
3707
3708 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 3709 if (! bfd_link_pic (info))
252b5132 3710 {
765e526c 3711 got_plt_entry = htab->non_lazy_plt->plt_entry;
dd7e64d4 3712 got_offset += got->output_section->vma + got->output_offset;
252b5132 3713 }
dd7e64d4
L		 3714 else
3715 {
765e526c 3716 got_plt_entry = htab->non_lazy_plt->pic_plt_entry;
dd7e64d4
L		 3717 got_offset += (got->output_section->vma
3718 + got->output_offset
3719 - gotplt->output_section->vma
3720 - gotplt->output_offset);
3721 }
3722
3723 plt_offset = eh->plt_got.offset;
3724 memcpy (plt->contents + plt_offset, got_plt_entry,
765e526c 3725 htab->non_lazy_plt->plt_entry_size);
dd7e64d4 3726 bfd_put_32 (output_bfd, got_offset,
f604c2a2 3727 (plt->contents + plt_offset
765e526c 3728 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 3729 }
3730
aec6b87e
L		 3731 if (!local_undefweak
3732 && !h->def_regular
dd7e64d4
L		 3733 && (h->plt.offset != (bfd_vma) -1
3734 || eh->plt_got.offset != (bfd_vma) -1))
3735 {
3736 /* Mark the symbol as undefined, rather than as defined in
3737 the .plt section. Leave the value if there were any
3738 relocations where pointer equality matters (this is a clue
3739 for the dynamic linker, to make function pointer
3740 comparisons work between an application and shared
3741 library), otherwise set it to zero. If a function is only
3742 called from a binary, there is no need to slow down
3743 shared libraries because of that. */
3744 sym->st_shndx = SHN_UNDEF;
3745 if (!h->pointer_equality_needed)
3746 sym->st_value = 0;
252b5132
RH		 3747 }
3748
4ec09950
L		 3749 _bfd_x86_elf_link_fixup_ifunc_symbol (info, htab, h, sym);
3750
aec6b87e
L		 3751 /* Don't generate dynamic GOT relocation against undefined weak
3752 symbol in executable. */
13ae64f3 3753 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 3754 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry(h)->tls_type)
3755 && (elf_x86_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
aec6b87e 3756 && !local_undefweak)
252b5132 3757 {
947216bf 3758 Elf_Internal_Rela rel;
233cc9c1 3759 asection *relgot = htab->elf.srelgot;
252b5132
RH		 3760
3761 /* This symbol has an entry in the global offset table. Set it
3762 up. */
3763
6de2ae4a 3764 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 3765 abort ();
252b5132 3766
6de2ae4a
L		 3767 rel.r_offset = (htab->elf.sgot->output_section->vma
3768 + htab->elf.sgot->output_offset
dc810e39 3769 + (h->got.offset & ~(bfd_vma) 1));
252b5132 3770
dd5724d5
AM		 3771 /* If this is a static link, or it is a -Bsymbolic link and the
3772 symbol is defined locally or was forced to be local because
3773 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 3774 The entry in the global offset table will already have been
3775 initialized in the relocate_section function. */
710ab287 3776 if (h->def_regular
0018b0a3
L		 3777 && h->type == STT_GNU_IFUNC)
3778 {
233cc9c1
L		 3779 if (h->plt.offset == (bfd_vma) -1)
3780 {
3781 /* STT_GNU_IFUNC is referenced without PLT. */
3782 if (htab->elf.splt == NULL)
3783 {
3784 /* use .rel[a].iplt section to store .got relocations
3785 in static executable. */
3786 relgot = htab->elf.irelplt;
3787 }
6999821f 3788 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 3789 {
871b3ab2 3790 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 3791 h->root.root.string,
3792 h->root.u.def.section->owner);
3793
233cc9c1
L		 3794 bfd_put_32 (output_bfd,
3795 (h->root.u.def.value
3796 + h->root.u.def.section->output_section->vma
3797 + h->root.u.def.section->output_offset),
3798 htab->elf.sgot->contents + h->got.offset);
3799 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3800 }
3801 else
3802 goto do_glob_dat;
3803 }
3804 else if (bfd_link_pic (info))
710ab287
L		 3805 {
3806 /* Generate R_386_GLOB_DAT. */
3807 goto do_glob_dat;
3808 }
3809 else
3810 {
cd2b2c10 3811 asection *plt;
ee2fdd6f 3812 bfd_vma plt_offset;
cd2b2c10 3813
710ab287
L		 3814 if (!h->pointer_equality_needed)
3815 abort ();
3816
3817 /* For non-shared object, we can't use .got.plt, which
3818 contains the real function addres if we need pointer
3819 equality. We load the GOT entry with the PLT entry. */
ee2fdd6f
L		 3820 if (htab->plt_second != NULL)
3821 {
3822 plt = htab->plt_second;
3823 plt_offset = eh->plt_second.offset;
3824 }
3825 else
3826 {
3827 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
3828 plt_offset = h->plt.offset;
3829 }
710ab287
L		 3830 bfd_put_32 (output_bfd,
3831 (plt->output_section->vma
ee2fdd6f 3832 + plt->output_offset + plt_offset),
6de2ae4a 3833 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 3834 return TRUE;
3835 }
0018b0a3 3836 }
0e1862bb 3837 else if (bfd_link_pic (info)
6999821f 3838 && SYMBOL_REFERENCES_LOCAL_P (info, h))
dd5724d5 3839 {
6725bdbf 3840 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 3841 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3842 }
252b5132
RH		 3843 else
3844 {
dd5724d5 3845 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 3846do_glob_dat:
6725bdbf 3847 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 3848 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 3849 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
3850 }
3851
233cc9c1 3852 elf_append_rel (output_bfd, relgot, &rel);
252b5132
RH		 3853 }
3854
f5385ebf 3855 if (h->needs_copy)
252b5132 3856 {
947216bf 3857 Elf_Internal_Rela rel;
5474d94f 3858 asection *s;
252b5132
RH		 3859
3860 /* This symbol needs a copy reloc. Set it up. */
ff38b4cc 3861 VERIFY_COPY_RELOC (h, htab)
252b5132
RH		 3862
3863 rel.r_offset = (h->root.u.def.value
3864 + h->root.u.def.section->output_section->vma
3865 + h->root.u.def.section->output_offset);
3866 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
afbf7e8e 3867 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3868 s = htab->elf.sreldynrelro;
3869 else
3870 s = htab->elf.srelbss;
3871 elf_append_rel (output_bfd, s, &rel);
252b5132
RH		 3872 }
3873
b34976b6 3874 return TRUE;
252b5132
RH		 3875}
3876
c25bc9fc
L		 3877/* Finish up local dynamic symbol handling. We set the contents of
3878 various dynamic sections here. */
3879
3880static bfd_boolean
3881elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
3882{
3883 struct elf_link_hash_entry *h
3884 = (struct elf_link_hash_entry *) *slot;
3885 struct bfd_link_info *info
23209a78 3886 = (struct bfd_link_info *) inf;
c25bc9fc
L		 3887
3888 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
3889 h, NULL);
3890}
3891
aec6b87e
L		 3892/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
3893 here since undefined weak symbol may not be dynamic and may not be
3894 called for elf_i386_finish_dynamic_symbol. */
3895
3896static bfd_boolean
3897elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
3898 void *inf)
3899{
3900 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
3901 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3902
3903 if (h->root.type != bfd_link_hash_undefweak
3904 || h->dynindx != -1)
3905 return TRUE;
3906
3907 return elf_i386_finish_dynamic_symbol (info->output_bfd,
5f0f0847 3908 info, h, NULL);
aec6b87e
L		 3909}
3910
38701953
AM		 3911/* Used to decide how to sort relocs in an optimal manner for the
3912 dynamic linker, before writing them out. */
3913
3914static enum elf_reloc_type_class
cae1fbbb 3915elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 3916 const asection *rel_sec ATTRIBUTE_UNUSED,
3917 const Elf_Internal_Rela *rela)
38701953 3918{
cae1fbbb
L		 3919 bfd *abfd = info->output_bfd;
3920 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3921 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 3922
d9e3b590
L		 3923 if (htab->dynsym != NULL
3924 && htab->dynsym->contents != NULL)
3925 {
3926 /* Check relocation against STT_GNU_IFUNC symbol if there are
07d6d2b8 3927 dynamic symbols. */
d9e3b590 3928 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
c428ce9d
L		 3929 if (r_symndx != STN_UNDEF)
3930 {
3931 Elf_Internal_Sym sym;
3932 if (!bed->s->swap_symbol_in (abfd,
3933 (htab->dynsym->contents
3934 + r_symndx * sizeof (Elf32_External_Sym)),
3935 0, &sym))
3936 abort ();
d9e3b590 3937
c428ce9d
L		 3938 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3939 return reloc_class_ifunc;
3940 }
d9e3b590 3941 }
cae1fbbb 3942
55fd94b0 3943 switch (ELF32_R_TYPE (rela->r_info))
38701953 3944 {
c428ce9d
L		 3945 case R_386_IRELATIVE:
3946 return reloc_class_ifunc;
38701953
AM		 3947 case R_386_RELATIVE:
3948 return reloc_class_relative;
3949 case R_386_JUMP_SLOT:
3950 return reloc_class_plt;
3951 case R_386_COPY:
3952 return reloc_class_copy;
3953 default:
3954 return reloc_class_normal;
3955 }
3956}
3957
252b5132
RH		 3958/* Finish up the dynamic sections. */
3959
b34976b6 3960static bfd_boolean
55fd94b0
AM		 3961elf_i386_finish_dynamic_sections (bfd *output_bfd,
3962 struct bfd_link_info *info)
252b5132 3963{
0afcef53 3964 struct elf_x86_link_hash_table *htab;
252b5132 3965
9577f60b 3966 htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
4dfe6ac6
NC		 3967 if (htab == NULL)
3968 return FALSE;
3969
9577f60b
L		 3970 if (!htab->elf.dynamic_sections_created)
3971 return TRUE;
252b5132 3972
9577f60b 3973 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 3974 {
9577f60b
L		 3975 /* UnixWare sets the entsize of .plt to 4, although that doesn't
3976 really seem like the right value. */
3977 elf_section_data (htab->elf.splt->output_section)
3978 ->this_hdr.sh_entsize = 4;
252b5132 3979
9577f60b 3980 if (htab->plt.has_plt0)
252b5132 3981 {
9577f60b
L		 3982 /* Fill in the special first entry in the procedure linkage
3983 table. */
9577f60b
L		 3984 memcpy (htab->elf.splt->contents, htab->plt.plt0_entry,
3985 htab->lazy_plt->plt0_entry_size);
3986 memset (htab->elf.splt->contents + htab->lazy_plt->plt0_entry_size,
851b6fa1 3987 htab->plt0_pad_byte,
9577f60b
L		 3988 htab->plt.plt_entry_size - htab->lazy_plt->plt0_entry_size);
3989 if (!bfd_link_pic (info))
252b5132 3990 {
9577f60b
L		 3991 bfd_put_32 (output_bfd,
3992 (htab->elf.sgotplt->output_section->vma
3993 + htab->elf.sgotplt->output_offset
3994 + 4),
3995 htab->elf.splt->contents
3996 + htab->lazy_plt->plt0_got1_offset);
3997 bfd_put_32 (output_bfd,
3998 (htab->elf.sgotplt->output_section->vma
3999 + htab->elf.sgotplt->output_offset
4000 + 8),
4001 htab->elf.splt->contents
4002 + htab->lazy_plt->plt0_got2_offset);
1f78f649 4003
851b6fa1 4004 if (htab->target_os == is_vxworks)
eac338cf 4005 {
9577f60b
L		 4006 Elf_Internal_Rela rel;
4007 int num_plts = (htab->elf.splt->size
4008 / htab->plt.plt_entry_size) - 1;
4009 unsigned char *p;
4010 asection *srelplt2 = htab->srelplt2;
4011
4012 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
4013 + 4. On IA32 we use REL relocations so the
4014 addend goes in the PLT directly. */
4015 rel.r_offset = (htab->elf.splt->output_section->vma
4016 + htab->elf.splt->output_offset
4017 + htab->lazy_plt->plt0_got1_offset);
4018 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
4019 R_386_32);
4020 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4021 srelplt2->contents);
4022 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
4023 + 8. */
4024 rel.r_offset = (htab->elf.splt->output_section->vma
4025 + htab->elf.splt->output_offset
4026 + htab->lazy_plt->plt0_got2_offset);
4027 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
4028 R_386_32);
4029 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4030 srelplt2->contents +
4031 sizeof (Elf32_External_Rel));
4032 /* Correct the .rel.plt.unloaded relocations. */
4033 p = srelplt2->contents;
4034 if (bfd_link_pic (info))
4035 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4036 else
4037 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
eac338cf 4038
9577f60b 4039 for (; num_plts; num_plts--)
1f78f649 4040 {
9577f60b 4041 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
f604c2a2 4042 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
1f78f649 4043 R_386_32);
9577f60b
L		 4044 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4045 p += sizeof (Elf32_External_Rel);
f604c2a2 4046
9577f60b
L		 4047 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4048 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
4049 R_386_32);
4050 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4051 p += sizeof (Elf32_External_Rel);
1f78f649 4052 }
eac338cf
PB		 4053 }
4054 }
252b5132 4055 }
fff53dae
L		 4056 }
4057
aec6b87e
L		 4058 /* Fill PLT entries for undefined weak symbols in PIE. */
4059 if (bfd_link_pie (info))
4060 bfd_hash_traverse (&info->hash->table,
4061 elf_i386_pie_finish_undefweak_symbol,
4062 info);
4063
b34976b6 4064 return TRUE;
252b5132
RH		 4065}
4066
233cc9c1
L		 4067/* Fill PLT/GOT entries and allocate dynamic relocations for local
4068 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4069 It has to be done before elf_link_sort_relocs is called so that
4070 dynamic relocations are properly sorted. */
4071
4072static bfd_boolean
4073elf_i386_output_arch_local_syms
4074 (bfd *output_bfd ATTRIBUTE_UNUSED,
4075 struct bfd_link_info *info,
4076 void *flaginfo ATTRIBUTE_UNUSED,
4077 int (*func) (void *, const char *,
4078 Elf_Internal_Sym *,
4079 asection *,
4080 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4081{
0afcef53
L		 4082 struct elf_x86_link_hash_table *htab
4083 = elf_x86_hash_table (info, I386_ELF_DATA);
233cc9c1
L		 4084 if (htab == NULL)
4085 return FALSE;
4086
4087 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4088 htab_traverse (htab->loc_hash_table,
4089 elf_i386_finish_local_dynamic_symbol,
4090 info);
4091
4092 return TRUE;
4093}
4094
f604c2a2 4095/* Forward declaration. */
765e526c 4096static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt;
f604c2a2
L		 4097
4098/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4099 dynamic relocations. */
4100
4101static long
4102elf_i386_get_synthetic_symtab (bfd *abfd,
4103 long symcount ATTRIBUTE_UNUSED,
4104 asymbol **syms ATTRIBUTE_UNUSED,
4105 long dynsymcount,
4106 asymbol **dynsyms,
4107 asymbol **ret)
4108{
f493882d 4109 long count, i, n;
f604c2a2 4110 int j;
f604c2a2 4111 bfd_byte *plt_contents;
f493882d 4112 long relsize;
765e526c
L		 4113 const struct elf_x86_lazy_plt_layout *lazy_plt;
4114 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4115 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4116 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
f604c2a2
L		 4117 asection *plt;
4118 bfd_vma got_addr;
f493882d
L		 4119 enum elf_x86_plt_type plt_type;
4120 struct elf_x86_plt plts[] =
3972882e 4121 {
f493882d
L		 4122 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4123 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
4124 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4125 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
f604c2a2 4126 };
144bed8d 4127
f604c2a2 4128 *ret = NULL;
144bed8d 4129
f604c2a2
L		 4130 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4131 return 0;
3972882e 4132
f604c2a2
L		 4133 if (dynsymcount <= 0)
4134 return 0;
cca5b8b6 4135
f604c2a2
L		 4136 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4137 if (relsize <= 0)
4138 return -1;
cca5b8b6 4139
f604c2a2
L		 4140 non_lazy_plt = NULL;
4141 /* Silence GCC 6. */
4142 lazy_plt = NULL;
ee2fdd6f
L		 4143 non_lazy_ibt_plt = NULL;
4144 lazy_ibt_plt = NULL;
851b6fa1 4145 switch (get_elf_x86_backend_data (abfd)->target_os)
144bed8d 4146 {
f604c2a2 4147 case is_normal:
3b4c3844 4148 case is_solaris:
f604c2a2 4149 non_lazy_plt = &elf_i386_non_lazy_plt;
ee2fdd6f
L		 4150 lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
4151 non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
f604c2a2
L		 4152 /* Fall through */
4153 case is_vxworks:
4154 lazy_plt = &elf_i386_lazy_plt;
4155 break;
4156 case is_nacl:
4157 lazy_plt = &elf_i386_nacl_plt;
4158 break;
4159 }
4160
4161 got_addr = 0;
3972882e 4162
f604c2a2
L		 4163 count = 0;
4164 for (j = 0; plts[j].name != NULL; j++)
4165 {
4166 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4167 if (plt == NULL || plt->size == 0)
6f25f223 4168 continue;
533d0af0 4169
f604c2a2
L		 4170 /* Get the PLT section contents. */
4171 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4172 if (plt_contents == NULL)
4173 break;
4174 if (!bfd_get_section_contents (abfd, (asection *) plt,
4175 plt_contents, 0, plt->size))
4176 {
4177 free (plt_contents);
4178 break;
4179 }
4180
4181 /* Check what kind of PLT it is. */
4182 plt_type = plt_unknown;
90efb642
L		 4183 if (plts[j].type == plt_unknown
4184 && (plt->size >= (lazy_plt->plt0_entry_size
4185 + lazy_plt->plt_entry_size)))
f604c2a2
L		 4186 {
4187 /* Match lazy PLT first. */
4188 if (memcmp (plt_contents, lazy_plt->plt0_entry,
4189 lazy_plt->plt0_got1_offset) == 0)
ee2fdd6f
L		 4190 {
4191 /* The fist entry in the lazy IBT PLT is the same as the
4192 normal lazy PLT. */
4193 if (lazy_ibt_plt != NULL
90efb642 4194 && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
ee2fdd6f
L		 4195 lazy_ibt_plt->plt_entry,
4196 lazy_ibt_plt->plt_got_offset) == 0))
4197 plt_type = plt_lazy | plt_second;
4198 else
4199 plt_type = plt_lazy;
4200 }
f604c2a2
L		 4201 else if (memcmp (plt_contents, lazy_plt->pic_plt0_entry,
4202 lazy_plt->plt0_got1_offset) == 0)
ee2fdd6f
L		 4203 {
4204 /* The fist entry in the PIC lazy IBT PLT is the same as
4205 the normal PIC lazy PLT. */
4206 if (lazy_ibt_plt != NULL
90efb642 4207 && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
ee2fdd6f
L		 4208 lazy_ibt_plt->pic_plt_entry,
4209 lazy_ibt_plt->plt_got_offset) == 0))
4210 plt_type = plt_lazy | plt_pic | plt_second;
4211 else
4212 plt_type = plt_lazy | plt_pic;
4213 }
f604c2a2
L		 4214 }
4215
4216 if (non_lazy_plt != NULL
90efb642
L		 4217 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4218 && plt->size >= non_lazy_plt->plt_entry_size)
f604c2a2
L		 4219 {
4220 /* Match non-lazy PLT. */
4221 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4222 non_lazy_plt->plt_got_offset) == 0)
4223 plt_type = plt_non_lazy;
4224 else if (memcmp (plt_contents, non_lazy_plt->pic_plt_entry,
4225 non_lazy_plt->plt_got_offset) == 0)
4226 plt_type = plt_pic;
4227 }
4228
ee2fdd6f 4229 if ((non_lazy_ibt_plt != NULL)
90efb642
L		 4230 && (plt_type == plt_unknown || plt_type == plt_second)
4231 && plt->size >= non_lazy_ibt_plt->plt_entry_size)
ee2fdd6f
L		 4232 {
4233 if (memcmp (plt_contents,
4234 non_lazy_ibt_plt->plt_entry,
4235 non_lazy_ibt_plt->plt_got_offset) == 0)
4236 {
4237 /* Match IBT PLT. */
4238 plt_type = plt_second;
4239 non_lazy_plt = non_lazy_ibt_plt;
4240 }
4241 else if (memcmp (plt_contents,
4242 non_lazy_ibt_plt->pic_plt_entry,
4243 non_lazy_ibt_plt->plt_got_offset) == 0)
4244 {
4245 /* Match PIC IBT PLT. */
4246 plt_type = plt_second | plt_pic;
4247 non_lazy_plt = non_lazy_ibt_plt;
4248 }
4249 }
4250
f604c2a2 4251 if (plt_type == plt_unknown)
37c0b6ee
L		 4252 {
4253 free (plt_contents);
4254 continue;
4255 }
3972882e 4256
f604c2a2
L		 4257 plts[j].sec = plt;
4258 plts[j].type = plt_type;
ec1f73bb 4259
f604c2a2
L		 4260 if ((plt_type & plt_lazy))
4261 {
4262 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4263 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4264 /* Skip PLT0 in lazy PLT. */
4265 i = 1;
4266 }
4267 else
4268 {
4269 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4270 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4271 i = 0;
4272 }
fca6ae69 4273
ee2fdd6f
L		 4274 /* Skip lazy PLT when the second PLT is used. */
4275 if ((plt_type & (plt_lazy | plt_second))
4276 == (plt_lazy | plt_second))
4277 plts[j].count = 0;
4278 else
4279 {
4280 n = plt->size / plts[j].plt_entry_size;
4281 plts[j].count = n;
4282 count += n - i;
4283 }
f604c2a2
L		 4284
4285 plts[j].contents = plt_contents;
4286
4287 /* The _GLOBAL_OFFSET_TABLE_ address is needed. */
4288 if ((plt_type & plt_pic))
4289 got_addr = (bfd_vma) -1;
144bed8d
L		 4290 }
4291
f493882d
L		 4292 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4293 got_addr, plts, dynsyms,
4294 ret);
4c45e5c9
JJ		 4295}
4296
f604c2a2
L		 4297/* Set up i386 GNU properties. Return the first relocatable ELF input
4298 with GNU properties if found. Otherwise, return NULL. */
4299
4300static bfd *
4301elf_i386_link_setup_gnu_properties (struct bfd_link_info *info)
4302{
1de031c8 4303 struct elf_x86_init_table init_table;
f604c2a2 4304
851b6fa1 4305 switch (get_elf_x86_backend_data (info->output_bfd)->target_os)
f604c2a2
L		 4306 {
4307 case is_normal:
3b4c3844 4308 case is_solaris:
851b6fa1 4309 init_table.plt0_pad_byte = 0x0;
1de031c8
L		 4310 init_table.lazy_plt = &elf_i386_lazy_plt;
4311 init_table.non_lazy_plt = &elf_i386_non_lazy_plt;
4312 init_table.lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
4313 init_table.non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
f604c2a2
L		 4314 break;
4315 case is_vxworks:
851b6fa1 4316 init_table.plt0_pad_byte = 0x90;
1de031c8
L		 4317 init_table.lazy_plt = &elf_i386_lazy_plt;
4318 init_table.non_lazy_plt = NULL;
4319 init_table.lazy_ibt_plt = NULL;
4320 init_table.non_lazy_ibt_plt = NULL;
f604c2a2
L		 4321 break;
4322 case is_nacl:
851b6fa1 4323 init_table.plt0_pad_byte = 0x90;
1de031c8
L		 4324 init_table.lazy_plt = &elf_i386_nacl_plt;
4325 init_table.non_lazy_plt = NULL;
4326 init_table.lazy_ibt_plt = NULL;
4327 init_table.non_lazy_ibt_plt = NULL;
f604c2a2
L		 4328 break;
4329 }
4330
1de031c8
L		 4331 init_table.r_info = elf32_r_info;
4332 init_table.r_sym = elf32_r_sym;
7a382c1c 4333
1de031c8 4334 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
f604c2a2
L		 4335}
4336
6d00b590 4337#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 4338#define TARGET_LITTLE_NAME "elf32-i386"
4339#define ELF_ARCH bfd_arch_i386
ae95ffa6 4340#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 4341#define ELF_MACHINE_CODE EM_386
4342#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 4343
4344#define elf_backend_can_gc_sections 1
51b64d56 4345#define elf_backend_can_refcount 1
252b5132
RH		 4346#define elf_backend_want_got_plt 1
4347#define elf_backend_plt_readonly 1
4348#define elf_backend_want_plt_sym 0
4349#define elf_backend_got_header_size 12
e41b3a13 4350#define elf_backend_plt_alignment 4
64f52338 4351#define elf_backend_dtrel_excludes_plt 1
f7483970 4352#define elf_backend_extern_protected_data 1
bedfd056 4353#define elf_backend_caches_rawsize 1
5474d94f 4354#define elf_backend_want_dynrelro 1
252b5132 4355
8c29f035
AM		 4356/* Support RELA for objdump of prelink objects. */
4357#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 4358#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
4359
dd5724d5 4360#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
dd5724d5 4361#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 4362#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 4363#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5 4364
13285a1b 4365#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 4366#define elf_backend_check_relocs elf_i386_check_relocs
f604c2a2 4367#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
0ac8d2ca 4368#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 4369#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
4370#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
233cc9c1 4371#define elf_backend_output_arch_local_syms elf_i386_output_arch_local_syms
c5fccbec
DJ		 4372#define elf_backend_grok_prstatus elf_i386_grok_prstatus
4373#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 4374#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca 4375#define elf_backend_relocate_section elf_i386_relocate_section
f604c2a2 4376#define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties
9f857535 4377#define elf_backend_hide_symbol _bfd_x86_elf_hide_symbol
dd5724d5 4378
a2f63b2e
MR		 4379#define elf_backend_linux_prpsinfo32_ugid16 TRUE
4380
8f56f7a2
L		 4381#define elf32_bed elf32_i386_bed
4382
252b5132 4383#include "elf32-target.h"
2bc3c89a
AM		 4384
4385/* FreeBSD support. */
4386
4387#undef TARGET_LITTLE_SYM
6d00b590 4388#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 4389#undef TARGET_LITTLE_NAME
4390#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 4391#undef ELF_OSABI
4392#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 4393
4394/* The kernel recognizes executables as valid only if they carry a
4395 "FreeBSD" label in the ELF header. So we put this label on all
4396 executables and (for simplicity) also all other object files. */
4397
2bc3c89a 4398static void
d8045f23 4399elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 4400{
78245035 4401 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 4402
2bc3c89a 4403#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 4404 {
4405 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
4406 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4407 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
4408 }
caf47ea6 4409#endif
2bc3c89a
AM		 4410}
4411
4412#undef elf_backend_post_process_headers
d8045f23 4413#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 4414#undef elf32_bed
4415#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 4416
d8045f23
NC		 4417#undef elf_backend_add_symbol_hook
4418
2bc3c89a 4419#include "elf32-target.h"
eac338cf 4420
a6cc6b3b
RO		 4421/* Solaris 2. */
4422
4423#undef TARGET_LITTLE_SYM
6d00b590 4424#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 4425#undef TARGET_LITTLE_NAME
4426#define TARGET_LITTLE_NAME "elf32-i386-sol2"
4427
3b4c3844
L		 4428static const struct elf_x86_backend_data elf_i386_solaris_arch_bed =
4429 {
4430 is_solaris /* os */
4431 };
4432
4433#undef elf_backend_arch_data
4434#define elf_backend_arch_data &elf_i386_solaris_arch_bed
4435
914082d1
L		 4436#undef elf_backend_post_process_headers
4437
a6cc6b3b
RO		 4438/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
4439 objects won't be recognized. */
4440#undef ELF_OSABI
4441
4442#undef elf32_bed
4443#define elf32_bed elf32_i386_sol2_bed
4444
7dc98aea
RO		 4445/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
4446 boundary. */
84865015 4447#undef elf_backend_static_tls_alignment
7dc98aea
RO		 4448#define elf_backend_static_tls_alignment 8
4449
a6cc6b3b
RO		 4450/* The Solaris 2 ABI requires a plt symbol on all platforms.
4451
4452 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
4453 File, p.63. */
84865015 4454#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 4455#define elf_backend_want_plt_sym 1
4456
84865015
NC		 4457#undef elf_backend_strtab_flags
4458#define elf_backend_strtab_flags SHF_STRINGS
4459
5522f910 4460/* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
07d6d2b8 4461 has a type >= SHT_LOOS. Returns TRUE if these fields were initialised
5522f910
NC		 4462 FALSE otherwise. ISECTION is the best guess matching section from the
4463 input bfd IBFD, but it might be NULL. */
4464
84865015 4465static bfd_boolean
5522f910
NC		 4466elf32_i386_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
4467 bfd *obfd ATTRIBUTE_UNUSED,
4468 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
4469 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 4470{
4471 /* PR 19938: FIXME: Need to add code for setting the sh_info
5522f910
NC		 4472 and sh_link fields of Solaris specific section types. */
4473 return FALSE;
84865015 4474
5522f910 4475 /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13,
84865015
NC		 4476 Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation:
4477
4478http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc
4479
4480 The following values should be set:
07d6d2b8
AM		 4481
4482Type Link Info
84865015
NC		 4483-----------------------------------------------------------------------------
4484SHT_SUNW_ancillary The section header index of 0
07d6d2b8
AM		 4485 [0x6fffffee] the associated string table.
4486
84865015 4487SHT_SUNW_capinfo The section header index of For a dynamic object, the
07d6d2b8
AM		 4488 [0x6ffffff0] the associated symbol table. section header index of
4489 the associated
84865015
NC		 4490 SHT_SUNW_capchain table,
4491 otherwise 0.
4492
4493SHT_SUNW_symsort The section header index of 0
07d6d2b8 4494 [0x6ffffff1] the associated symbol table.
84865015
NC		 4495
4496SHT_SUNW_tlssort The section header index of 0
07d6d2b8
AM		 4497 [0x6ffffff2] the associated symbol table.
4498
4499SHT_SUNW_LDYNSYM The section header index of One greater than the
4500 [0x6ffffff3] the associated string table. symbol table index of the
4501 This index is the same string last local symbol,
84865015 4502 table used by the SHT_DYNSYM STB_LOCAL. Since
07d6d2b8
AM		 4503 section. SHT_SUNW_LDYNSYM only
4504 contains local symbols,
84865015
NC		 4505 sh_info is equivalent to
4506 the number of symbols in
4507 the table.
4508
07d6d2b8
AM		 4509SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer
4510 [0x6ffffff5] the section header index of to named strings, the
4511 the associated section header index of
4512 SHT_SUNW_capinfo table, the associated string
4513 otherwise 0. table, otherwise 0.
84865015 4514
07d6d2b8
AM		 4515SHT_SUNW_move The section header index of 0
4516 [0x6ffffffa] the associated symbol table.
4517
4518SHT_SUNW_COMDAT 0 0
84865015
NC		 4519 [0x6ffffffb]
4520
4521SHT_SUNW_syminfo The section header index of The section header index
07d6d2b8
AM		 4522 [0x6ffffffc] the associated symbol table. of the associated
4523 .dynamic section.
84865015 4524
07d6d2b8
AM		 4525SHT_SUNW_verdef The section header index of The number of version
4526 [0x6ffffffd] the associated string table. definitions within the
4527 section.
84865015
NC		 4528
4529SHT_SUNW_verneed The section header index of The number of version
07d6d2b8
AM		 4530 [0x6ffffffe] the associated string table. dependencies within the
4531 section.
84865015 4532
07d6d2b8
AM		 4533SHT_SUNW_versym The section header index of 0
4534 [0x6fffffff] the associated symbol table. */
84865015
NC		 4535}
4536
5522f910
NC		 4537#undef elf_backend_copy_special_section_fields
4538#define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields
84865015 4539
a6cc6b3b
RO		 4540#include "elf32-target.h"
4541
bf64a951
L		 4542/* Intel MCU support. */
4543
4544static bfd_boolean
4545elf32_iamcu_elf_object_p (bfd *abfd)
4546{
4547 /* Set the right machine number for an IAMCU elf32 file. */
4548 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
4549 return TRUE;
4550}
4551
4552#undef TARGET_LITTLE_SYM
4553#define TARGET_LITTLE_SYM iamcu_elf32_vec
4554#undef TARGET_LITTLE_NAME
4555#define TARGET_LITTLE_NAME "elf32-iamcu"
84865015 4556#undef ELF_ARCH
bf64a951
L		 4557#define ELF_ARCH bfd_arch_iamcu
4558
4559#undef ELF_MACHINE_CODE
4560#define ELF_MACHINE_CODE EM_IAMCU
4561
3b4c3844
L		 4562#undef elf_backend_arch_data
4563#define elf_backend_arch_data &elf_i386_arch_bed
4564
bf64a951
L		 4565#undef ELF_OSABI
4566
4567#undef elf32_bed
4568#define elf32_bed elf32_iamcu_bed
4569
4570#undef elf_backend_object_p
4571#define elf_backend_object_p elf32_iamcu_elf_object_p
4572
4573#undef elf_backend_static_tls_alignment
4574
4575#undef elf_backend_want_plt_sym
07d6d2b8 4576#define elf_backend_want_plt_sym 0
bf64a951 4577
84865015 4578#undef elf_backend_strtab_flags
5522f910 4579#undef elf_backend_copy_special_section_fields
84865015 4580
bf64a951
L		 4581#include "elf32-target.h"
4582
4583/* Restore defaults. */
4584#undef ELF_ARCH
4585#define ELF_ARCH bfd_arch_i386
4586#undef ELF_MACHINE_CODE
4587#define ELF_MACHINE_CODE EM_386
4588
a27e4371
RM		 4589/* Native Client support. */
4590
4591#undef TARGET_LITTLE_SYM
6d00b590 4592#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 4593#undef TARGET_LITTLE_NAME
4594#define TARGET_LITTLE_NAME "elf32-i386-nacl"
4595#undef elf32_bed
4596#define elf32_bed elf32_i386_nacl_bed
4597
4598#undef ELF_MAXPAGESIZE
4599#define ELF_MAXPAGESIZE 0x10000
4600
4601/* Restore defaults. */
4602#undef ELF_OSABI
4603#undef elf_backend_want_plt_sym
4604#define elf_backend_want_plt_sym 0
4605#undef elf_backend_post_process_headers
a27e4371
RM		 4606#undef elf_backend_static_tls_alignment
4607
4608/* NaCl uses substantially different PLT entries for the same effects. */
4609
4610#undef elf_backend_plt_alignment
4611#define elf_backend_plt_alignment 5
4612#define NACL_PLT_ENTRY_SIZE 64
4613#define NACLMASK 0xe0 /* 32-byte alignment mask. */
4614
4615static const bfd_byte elf_i386_nacl_plt0_entry[] =
4616 {
4617 0xff, 0x35, /* pushl contents of address */
07d6d2b8
AM		 4618 0, 0, 0, 0, /* replaced with address of .got + 4. */
4619 0x8b, 0x0d, /* movl contents of address, %ecx */
4620 0, 0, 0, 0, /* replaced with address of .got + 8. */
a27e4371
RM		 4621 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
4622 0xff, 0xe1 /* jmp *%ecx */
4623 };
4624
4625static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
4626 {
4627 0x8b, 0x0d, /* movl contents of address, %ecx */
4628 0, 0, 0, 0, /* replaced with GOT slot address. */
4629 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
4630 0xff, 0xe1, /* jmp *%ecx */
4631
07d6d2b8 4632 /* Pad to the next 32-byte boundary with nop instructions. */
a27e4371
RM		 4633 0x90,
4634 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4635 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4636
4637 /* Lazy GOT entries point here (32-byte aligned). */
4638 0x68, /* pushl immediate */
4639 0, 0, 0, 0, /* replaced with reloc offset. */
4640 0xe9, /* jmp relative */
07d6d2b8 4641 0, 0, 0, 0, /* replaced with offset to .plt. */
a27e4371 4642
07d6d2b8 4643 /* Pad to the next 32-byte boundary with nop instructions. */
a27e4371
RM		 4644 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4645 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4646 0x90, 0x90
4647 };
4648
4649static const bfd_byte
4650elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
4651 {
4652 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
4653 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
4654 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
4655 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 4656
4657 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
4658 so pad to that size with nop instructions. */
4659 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 4660 };
4661
4662static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
4663 {
07d6d2b8
AM		 4664 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
4665 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
4666 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
4667 0xff, 0xe1, /* jmp *%ecx */
a27e4371 4668
07d6d2b8 4669 /* Pad to the next 32-byte boundary with nop instructions. */
a27e4371
RM		 4670 0x90,
4671 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4672 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4673
4674 /* Lazy GOT entries point here (32-byte aligned). */
07d6d2b8
AM		 4675 0x68, /* pushl immediate */
4676 0, 0, 0, 0, /* replaced with offset into relocation table. */
4677 0xe9, /* jmp relative */
4678 0, 0, 0, 0, /* replaced with offset to start of .plt. */
a27e4371 4679
07d6d2b8 4680 /* Pad to the next 32-byte boundary with nop instructions. */
a27e4371
RM		 4681 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4682 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4683 0x90, 0x90
4684 };
4685
4686static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
4687 {
07d6d2b8
AM		 4688#if (PLT_CIE_LENGTH != 20 \
4689 || PLT_FDE_LENGTH != 36 \
4690 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
a27e4371 4691 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
851b6fa1 4692# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
a27e4371
RM		 4693#endif
4694 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
07d6d2b8
AM		 4695 0, 0, 0, 0, /* CIE ID */
4696 1, /* CIE version */
4697 'z', 'R', 0, /* Augmentation string */
4698 1, /* Code alignment factor */
4699 0x7c, /* Data alignment factor: -4 */
4700 8, /* Return address column */
a27e4371
RM		 4701 1, /* Augmentation size */
4702 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
4703 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
4704 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
4705 DW_CFA_nop, DW_CFA_nop,
4706
07d6d2b8 4707 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
a27e4371 4708 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
07d6d2b8
AM		 4709 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
4710 0, 0, 0, 0, /* .plt size goes here */
4711 0, /* Augmentation size */
4712 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
4713 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
4714 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
4715 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
4716 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
4717 13, /* Block length */
4718 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
4719 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
a27e4371
RM		 4720 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
4721 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
4722 DW_CFA_nop, DW_CFA_nop
4723 };
4724
765e526c 4725static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt =
a27e4371
RM		 4726 {
4727 elf_i386_nacl_plt0_entry, /* plt0_entry */
4728 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
a27e4371
RM		 4729 elf_i386_nacl_plt_entry, /* plt_entry */
4730 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
765e526c
L		 4731 2, /* plt0_got1_offset */
4732 8, /* plt0_got2_offset */
4733 0, /* plt0_got2_insn_end */
a27e4371
RM		 4734 2, /* plt_got_offset */
4735 33, /* plt_reloc_offset */
4736 38, /* plt_plt_offset */
765e526c
L		 4737 0, /* plt_got_insn_size */
4738 0, /* plt_plt_insn_end */
a27e4371
RM		 4739 32, /* plt_lazy_offset */
4740 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
4741 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
4742 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
f604c2a2 4743 sizeof (elf_i386_nacl_eh_frame_plt) /* eh_frame_plt_size */
a27e4371
RM		 4744 };
4745
851b6fa1 4746static const struct elf_x86_backend_data elf_i386_nacl_arch_bed =
a27e4371 4747 {
07d6d2b8 4748 is_nacl /* os */
a27e4371
RM		 4749 };
4750
64b384e1
RM		 4751static bfd_boolean
4752elf32_i386_nacl_elf_object_p (bfd *abfd)
4753{
4754 /* Set the right machine number for a NaCl i386 ELF32 file. */
4755 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
4756 return TRUE;
4757}
4758
a27e4371
RM		 4759#undef elf_backend_arch_data
4760#define elf_backend_arch_data &elf_i386_nacl_arch_bed
4761
64b384e1
RM		 4762#undef elf_backend_object_p
4763#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 4764#undef elf_backend_modify_segment_map
4765#define elf_backend_modify_segment_map nacl_modify_segment_map
4766#undef elf_backend_modify_program_headers
4767#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 4768#undef elf_backend_final_write_processing
4769#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 4770
a27e4371
RM		 4771#include "elf32-target.h"
4772
5a68afcf 4773/* Restore defaults. */
64b384e1 4774#undef elf_backend_object_p
5a68afcf
RM		 4775#undef elf_backend_modify_segment_map
4776#undef elf_backend_modify_program_headers
887badb3 4777#undef elf_backend_final_write_processing
5a68afcf 4778
eac338cf
PB		 4779/* VxWorks support. */
4780
4781#undef TARGET_LITTLE_SYM
6d00b590 4782#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 4783#undef TARGET_LITTLE_NAME
4784#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 4785#undef ELF_OSABI
1587442d
L		 4786#undef ELF_MAXPAGESIZE
4787#define ELF_MAXPAGESIZE 0x1000
a27e4371
RM		 4788#undef elf_backend_plt_alignment
4789#define elf_backend_plt_alignment 4
eac338cf 4790
851b6fa1 4791static const struct elf_x86_backend_data elf_i386_vxworks_arch_bed =
23209a78 4792 {
07d6d2b8 4793 is_vxworks /* os */
23209a78 4794 };
eac338cf 4795
23209a78
RM		 4796#undef elf_backend_arch_data
4797#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 4798
13285a1b 4799#undef elf_backend_relocs_compatible
eac338cf
PB		 4800#undef elf_backend_add_symbol_hook
4801#define elf_backend_add_symbol_hook \
4802 elf_vxworks_add_symbol_hook
4803#undef elf_backend_link_output_symbol_hook
4804#define elf_backend_link_output_symbol_hook \
9c72ff84 4805 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 4806#undef elf_backend_emit_relocs
4807#define elf_backend_emit_relocs elf_vxworks_emit_relocs
4808#undef elf_backend_final_write_processing
4809#define elf_backend_final_write_processing \
4810 elf_vxworks_final_write_processing
7dc98aea 4811#undef elf_backend_static_tls_alignment
eac338cf
PB		 4812
4813/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4814 define it. */
4815#undef elf_backend_want_plt_sym
4816#define elf_backend_want_plt_sym 1
4817
4818#undef elf32_bed
4819#define elf32_bed elf32_i386_vxworks_bed
4820
4821#include "elf32-target.h"
GDB Binutils - Deliverables
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