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Fix regression on ARM after Target FP patches
[thirdparty/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
2571583a 2 Copyright (C) 1993-2017 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 *
55fd94b0
AM		 197elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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:
349 break;
350 }
351
352 TRACE ("Unknown");
353 return 0;
354}
355
157090f7
AM		 356static reloc_howto_type *
357elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
358 const char *r_name)
359{
360 unsigned int i;
361
362 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
363 if (elf_howto_table[i].name != NULL
364 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
365 return &elf_howto_table[i];
366
367 return NULL;
368}
369
142411ca
L		 370static reloc_howto_type *
371elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 372{
dc47f327
AM		 373 unsigned int indx;
374
375 if ((indx = r_type) >= R_386_standard
376 && ((indx = r_type - R_386_ext_offset) - R_386_standard
377 >= R_386_ext - R_386_standard)
13ae64f3 378 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520
L		 379 >= R_386_ext2 - R_386_ext)
380 && ((indx = r_type - R_386_vt_offset) - R_386_ext2
381 >= R_386_vt - R_386_ext2))
252b5132 382 {
695344c0 383 /* xgettext:c-format */
4eca0228
AM		 384 _bfd_error_handler (_("%B: invalid relocation type %d"),
385 abfd, (int) r_type);
55fd94b0 386 indx = R_386_NONE;
252b5132 387 }
06614111
NC		 388 /* PR 17512: file: 0f67f69d. */
389 if (elf_howto_table [indx].type != r_type)
390 return NULL;
142411ca
L		 391 return &elf_howto_table[indx];
392}
393
394static void
395elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
396 arelent *cache_ptr,
397 Elf_Internal_Rela *dst)
398{
399 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
400 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 401}
402
403/* Return whether a symbol name implies a local label. The UnixWare
404 2.1 cc generates temporary symbols that start with .X, so we
405 recognize them here. FIXME: do other SVR4 compilers also use .X?.
406 If so, we should move the .X recognition into
407 _bfd_elf_is_local_label_name. */
408
b34976b6 409static bfd_boolean
55fd94b0 410elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 411{
412 if (name[0] == '.' && name[1] == 'X')
b34976b6 413 return TRUE;
252b5132
RH		 414
415 return _bfd_elf_is_local_label_name (abfd, name);
416}
417\f
38701953 418/* Support for core dump NOTE sections. */
61adc1a4 419
b34976b6 420static bfd_boolean
55fd94b0 421elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 422{
423 int offset;
eea6121a 424 size_t size;
38701953 425
61adc1a4 426 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 427 {
61adc1a4
NC		 428 int pr_version = bfd_get_32 (abfd, note->descdata);
429
430 if (pr_version != 1)
431 return FALSE;
432
433 /* pr_cursig */
228e534f 434 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 435
436 /* pr_pid */
228e534f 437 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 438
439 /* pr_reg */
440 offset = 28;
eea6121a 441 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 442 }
443 else
444 {
445 switch (note->descsz)
446 {
447 default:
448 return FALSE;
38701953 449
61adc1a4
NC		 450 case 144: /* Linux/i386 */
451 /* pr_cursig */
228e534f 452 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 453
61adc1a4 454 /* pr_pid */
228e534f 455 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 456
61adc1a4
NC		 457 /* pr_reg */
458 offset = 72;
eea6121a 459 size = 68;
38701953 460
61adc1a4
NC		 461 break;
462 }
38701953
AM		 463 }
464
465 /* Make a ".reg/999" section. */
466 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 467 size, note->descpos + offset);
38701953
AM		 468}
469
b34976b6 470static bfd_boolean
55fd94b0 471elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 472{
61adc1a4 473 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 474 {
61adc1a4
NC		 475 int pr_version = bfd_get_32 (abfd, note->descdata);
476
477 if (pr_version != 1)
b34976b6 478 return FALSE;
38701953 479
228e534f 480 elf_tdata (abfd)->core->program
61adc1a4 481 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 482 elf_tdata (abfd)->core->command
61adc1a4
NC		 483 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
484 }
485 else
486 {
487 switch (note->descsz)
488 {
489 default:
490 return FALSE;
491
492 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 493 elf_tdata (abfd)->core->pid
261b8d08 494 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 495 elf_tdata (abfd)->core->program
61adc1a4 496 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 497 elf_tdata (abfd)->core->command
61adc1a4
NC		 498 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
499 }
38701953
AM		 500 }
501
502 /* Note that for some reason, a spurious space is tacked
503 onto the end of the args in some (at least one anyway)
504 implementations, so strip it off if it exists. */
38701953 505 {
228e534f 506 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 507 int n = strlen (command);
508
509 if (0 < n && command[n - 1] == ' ')
510 command[n - 1] = '\0';
511 }
512
b34976b6 513 return TRUE;
38701953
AM		 514}
515\f
516/* Functions for the i386 ELF linker.
517
518 In order to gain some understanding of code in this file without
519 knowing all the intricate details of the linker, note the
520 following:
521
522 Functions named elf_i386_* are called by external routines, other
523 functions are only called locally. elf_i386_* functions appear
524 in this file more or less in the order in which they are called
525 from external routines. eg. elf_i386_check_relocs is called
526 early in the link process, elf_i386_finish_dynamic_sections is
527 one of the last functions. */
528
f604c2a2 529/* The size in bytes of an entry in the lazy procedure linkage table. */
252b5132 530
f604c2a2 531#define LAZY_PLT_ENTRY_SIZE 16
252b5132 532
f604c2a2
L		 533/* The size in bytes of an entry in the non-lazy procedure linkage
534 table. */
252b5132 535
f604c2a2
L		 536#define NON_LAZY_PLT_ENTRY_SIZE 8
537
538/* The first entry in an absolute lazy procedure linkage table looks
539 like this. See the SVR4 ABI i386 supplement to see how this works.
540 Will be padded to LAZY_PLT_ENTRY_SIZE with lazy_plt->plt0_pad_byte. */
541
542static const bfd_byte elf_i386_lazy_plt0_entry[12] =
252b5132
RH		 543{
544 0xff, 0x35, /* pushl contents of address */
545 0, 0, 0, 0, /* replaced with address of .got + 4. */
546 0xff, 0x25, /* jmp indirect */
eac338cf 547 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 548};
549
f604c2a2
L		 550/* Subsequent entries in an absolute lazy procedure linkage table look
551 like this. */
252b5132 552
f604c2a2 553static const bfd_byte elf_i386_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
252b5132
RH		 554{
555 0xff, 0x25, /* jmp indirect */
556 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
557 0x68, /* pushl immediate */
558 0, 0, 0, 0, /* replaced with offset into relocation table. */
559 0xe9, /* jmp relative */
560 0, 0, 0, 0 /* replaced with offset to start of .plt. */
561};
562
f604c2a2
L		 563/* The first entry in a PIC lazy procedure linkage table look like
564 this. Will be padded to LAZY_PLT_ENTRY_SIZE with
565 lazy_plt->plt0_pad_byte. */
252b5132 566
f604c2a2 567static const bfd_byte elf_i386_pic_lazy_plt0_entry[12] =
252b5132
RH		 568{
569 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 570 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 571};
572
f604c2a2
L		 573/* Subsequent entries in a PIC lazy procedure linkage table look like
574 this. */
252b5132 575
f604c2a2 576static const bfd_byte elf_i386_pic_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
252b5132
RH		 577{
578 0xff, 0xa3, /* jmp *offset(%ebx) */
579 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
580 0x68, /* pushl immediate */
581 0, 0, 0, 0, /* replaced with offset into relocation table. */
582 0xe9, /* jmp relative */
583 0, 0, 0, 0 /* replaced with offset to start of .plt. */
584};
585
f604c2a2 586/* Entries in the non-lazy procedure linkage table look like this. */
dd7e64d4 587
f604c2a2 588static const bfd_byte elf_i386_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
dd7e64d4
L		 589{
590 0xff, 0x25, /* jmp indirect */
591 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
592 0x66, 0x90 /* xchg %ax,%ax */
593};
594
f604c2a2
L		 595/* Entries in the PIC non-lazy procedure linkage table look like
596 this. */
dd7e64d4 597
f604c2a2 598static const bfd_byte elf_i386_pic_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
dd7e64d4
L		 599{
600 0xff, 0xa3, /* jmp *offset(%ebx) */
601 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
602 0x66, 0x90 /* xchg %ax,%ax */
603};
604
ee2fdd6f
L		 605/* The first entry in an absolute IBT-enabled lazy procedure linkage
606 table looks like this. */
607
608static const bfd_byte elf_i386_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
609{
610 0xff, 0x35, 0, 0, 0, 0, /* pushl GOT[1] */
611 0xff, 0x25, 0, 0, 0, 0, /* jmp *GOT[2] */
612 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
613};
614
615/* Subsequent entries for an absolute IBT-enabled lazy procedure linkage
616 table look like this. Subsequent entries for a PIC IBT-enabled lazy
617 procedure linkage table are the same. */
618
619static const bfd_byte elf_i386_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
620{
621 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
622 0x68, 0, 0, 0, 0, /* pushl immediate */
623 0xe9, 0, 0, 0, 0, /* jmp relative */
624 0x66, 0x90 /* xchg %ax,%ax */
625};
626
627/* The first entry in a PIC IBT-enabled lazy procedure linkage table
628 look like. */
629
630static const bfd_byte elf_i386_pic_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
631{
632 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
633 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */
634 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
635};
636
637/* Entries for branches with IBT-enabled in the absolute non-lazey
638 procedure linkage table look like this. They have the same size
639 as the lazy PLT entry. */
640
641static const bfd_byte elf_i386_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
642{
643 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
644 0xff, 0x25, 0, 0, 0, 0, /* jmp *name@GOT */
645 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
646};
647
648/* Entries for branches with IBT-enabled in the PIC non-lazey procedure
649 linkage table look like this. They have the same size as the lazy
650 PLT entry. */
651
652static const bfd_byte elf_i386_pic_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
653{
654 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
655 0xff, 0xa3, 0, 0, 0, 0, /* jmp *name@GOT(%ebx) */
656 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
657};
658
f604c2a2 659/* .eh_frame covering the lazy .plt section. */
e41b3a13 660
f604c2a2 661static const bfd_byte elf_i386_eh_frame_lazy_plt[] =
e41b3a13 662{
e41b3a13
JJ		 663 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
664 0, 0, 0, 0, /* CIE ID */
665 1, /* CIE version */
666 'z', 'R', 0, /* Augmentation string */
667 1, /* Code alignment factor */
668 0x7c, /* Data alignment factor */
669 8, /* Return address column */
670 1, /* Augmentation size */
671 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
672 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
673 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
674 DW_CFA_nop, DW_CFA_nop,
675
676 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
677 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
678 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
679 0, 0, 0, 0, /* .plt size goes here */
680 0, /* Augmentation size */
681 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
682 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
683 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
684 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
685 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
686 11, /* Block length */
687 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
688 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
689 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 690 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 691 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
692};
693
ee2fdd6f
L		 694/* .eh_frame covering the lazy .plt section with IBT-enabled. */
695
696static const bfd_byte elf_i386_eh_frame_lazy_ibt_plt[] =
697{
698 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
699 0, 0, 0, 0, /* CIE ID */
700 1, /* CIE version */
701 'z', 'R', 0, /* Augmentation string */
702 1, /* Code alignment factor */
703 0x7c, /* Data alignment factor */
704 8, /* Return address column */
705 1, /* Augmentation size */
706 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
707 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
708 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
709 DW_CFA_nop, DW_CFA_nop,
710
711 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
712 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
713 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
714 0, 0, 0, 0, /* .plt size goes here */
715 0, /* Augmentation size */
716 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
717 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
718 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
719 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
720 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
721 11, /* Block length */
722 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
723 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
724 DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge,
725 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
726 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
727};
728
f604c2a2 729/* .eh_frame covering the non-lazy .plt section. */
fff53dae 730
f604c2a2 731static const bfd_byte elf_i386_eh_frame_non_lazy_plt[] =
fff53dae
L		 732{
733#define PLT_GOT_FDE_LENGTH 16
734 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
735 0, 0, 0, 0, /* CIE ID */
736 1, /* CIE version */
737 'z', 'R', 0, /* Augmentation string */
738 1, /* Code alignment factor */
739 0x7c, /* Data alignment factor */
740 8, /* Return address column */
741 1, /* Augmentation size */
742 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
743 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
744 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
745 DW_CFA_nop, DW_CFA_nop,
746
747 PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
748 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
f604c2a2
L		 749 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
750 0, 0, 0, 0, /* non-lazy .plt size goes here */
fff53dae
L		 751 0, /* Augmentation size */
752 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
753};
754
25e762b9 755/* These are the standard parameters. */
765e526c 756static const struct elf_x86_lazy_plt_layout elf_i386_lazy_plt =
25e762b9 757 {
f604c2a2
L		 758 elf_i386_lazy_plt0_entry, /* plt0_entry */
759 sizeof (elf_i386_lazy_plt0_entry), /* plt0_entry_size */
f604c2a2
L		 760 elf_i386_lazy_plt_entry, /* plt_entry */
761 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
765e526c
L		 762 2, /* plt0_got1_offset */
763 8, /* plt0_got2_offset */
764 0, /* plt0_got2_insn_end */
25e762b9
RM		 765 2, /* plt_got_offset */
766 7, /* plt_reloc_offset */
767 12, /* plt_plt_offset */
765e526c
L		 768 0, /* plt_got_insn_size */
769 0, /* plt_plt_insn_end */
25e762b9 770 6, /* plt_lazy_offset */
f604c2a2
L		 771 elf_i386_pic_lazy_plt0_entry, /* pic_plt0_entry */
772 elf_i386_pic_lazy_plt_entry, /* pic_plt_entry */
773 elf_i386_eh_frame_lazy_plt, /* eh_frame_plt */
774 sizeof (elf_i386_eh_frame_lazy_plt) /* eh_frame_plt_size */
775 };
776
765e526c 777static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_plt =
f604c2a2
L		 778 {
779 elf_i386_non_lazy_plt_entry, /* plt_entry */
780 elf_i386_pic_non_lazy_plt_entry, /* pic_plt_entry */
781 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
782 2, /* plt_got_offset */
765e526c 783 0, /* plt_got_insn_size */
f604c2a2
L		 784 elf_i386_eh_frame_non_lazy_plt, /* eh_frame_plt */
785 sizeof (elf_i386_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
25e762b9 786 };
ee2fdd6f 787
765e526c 788static const struct elf_x86_lazy_plt_layout elf_i386_lazy_ibt_plt =
ee2fdd6f
L		 789 {
790 elf_i386_lazy_ibt_plt0_entry, /* plt0_entry */
791 sizeof (elf_i386_lazy_ibt_plt0_entry), /* plt0_entry_size */
ee2fdd6f
L		 792 elf_i386_lazy_ibt_plt_entry, /* plt_entry */
793 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
765e526c
L		 794 2, /* plt0_got1_offset */
795 8, /* plt0_got2_offset */
796 0, /* plt0_got2_insn_end */
ee2fdd6f
L		 797 4+2, /* plt_got_offset */
798 4+1, /* plt_reloc_offset */
799 4+6, /* plt_plt_offset */
765e526c
L		 800 0, /* plt_got_insn_size */
801 0, /* plt_plt_insn_end */
ee2fdd6f
L		 802 0, /* plt_lazy_offset */
803 elf_i386_pic_lazy_ibt_plt0_entry, /* pic_plt0_entry */
804 elf_i386_lazy_ibt_plt_entry, /* pic_plt_entry */
805 elf_i386_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
806 sizeof (elf_i386_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
807 };
808
765e526c 809static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_ibt_plt =
ee2fdd6f
L		 810 {
811 elf_i386_non_lazy_ibt_plt_entry, /* plt_entry */
812 elf_i386_pic_non_lazy_ibt_plt_entry,/* pic_plt_entry */
813 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
814 4+2, /* plt_got_offset */
765e526c 815 0, /* plt_got_insn_size */
ee2fdd6f
L		 816 elf_i386_eh_frame_non_lazy_plt, /* eh_frame_plt */
817 sizeof (elf_i386_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
818 };
25e762b9
RM		 819\f
820
eac338cf
PB		 821/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
822 for the PLTResolve stub and then for each PLT entry. */
823#define PLTRESOLVE_RELOCS_SHLIB 0
824#define PLTRESOLVE_RELOCS 2
825#define PLT_NON_JUMP_SLOT_RELOCS 2
826
23209a78 827/* These are the standard parameters. */
851b6fa1 828static const struct elf_x86_backend_data elf_i386_arch_bed =
23209a78 829 {
f604c2a2 830 is_normal /* os */
23209a78
RM		 831 };
832
833#define elf_backend_arch_data &elf_i386_arch_bed
834
142411ca
L		 835/* Return TRUE if the TLS access code sequence support transition
836 from R_TYPE. */
837
838static bfd_boolean
bedfd056 839elf_i386_check_tls_transition (asection *sec,
142411ca
L		 840 bfd_byte *contents,
841 Elf_Internal_Shdr *symtab_hdr,
842 struct elf_link_hash_entry **sym_hashes,
843 unsigned int r_type,
844 const Elf_Internal_Rela *rel,
845 const Elf_Internal_Rela *relend)
13ae64f3 846{
6eaa7fb5 847 unsigned int val, type, reg;
142411ca
L		 848 unsigned long r_symndx;
849 struct elf_link_hash_entry *h;
850 bfd_vma offset;
6eaa7fb5 851 bfd_byte *call;
1d4af308 852 bfd_boolean indirect_call;
142411ca 853
142411ca 854 offset = rel->r_offset;
13ae64f3 855 switch (r_type)
142411ca
L		 856 {
857 case R_386_TLS_GD:
858 case R_386_TLS_LDM:
859 if (offset < 2 || (rel + 1) >= relend)
860 return FALSE;
861
6eaa7fb5
L		 862 indirect_call = FALSE;
863 call = contents + offset + 4;
864 val = *(call - 5);
865 type = *(call - 6);
142411ca
L		 866 if (r_type == R_386_TLS_GD)
867 {
09e8c3bf 868 /* Check transition from GD access model. Only
6eaa7fb5
L		 869 leal foo@tlsgd(,%ebx,1), %eax
870 call ___tls_get_addr@PLT
871 or
872 leal foo@tlsgd(%ebx) %eax
873 call ___tls_get_addr@PLT
874 nop
875 or
876 leal foo@tlsgd(%reg), %eax
877 call *___tls_get_addr@GOT(%reg)
878 which may be converted to
879 addr32 call ___tls_get_addr
142411ca 880 can transit to different access model. */
6eaa7fb5
L		 881 if ((offset + 10) > sec->size
882 || (type != 0x8d && type != 0x04))
142411ca
L		 883 return FALSE;
884
142411ca
L		 885 if (type == 0x04)
886 {
6eaa7fb5
L		 887 /* leal foo@tlsgd(,%ebx,1), %eax
888 call ___tls_get_addr@PLT */
142411ca
L		 889 if (offset < 3)
890 return FALSE;
891
6eaa7fb5
L		 892 if (*(call - 7) != 0x8d
893 || val != 0x1d
894 || call[0] != 0xe8)
142411ca
L		 895 return FALSE;
896 }
897 else
898 {
6eaa7fb5
L		 899 /* This must be
900 leal foo@tlsgd(%ebx), %eax
901 call ___tls_get_addr@PLT
902 nop
903 or
904 leal foo@tlsgd(%reg), %eax
905 call *___tls_get_addr@GOT(%reg)
906 which may be converted to
907 addr32 call ___tls_get_addr
908
909 %eax can't be used as the GOT base register since it
910 is used to pass parameter to ___tls_get_addr. */
911 reg = val & 7;
912 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca
L		 913 return FALSE;
914
6eaa7fb5
L		 915 indirect_call = call[0] == 0xff;
916 if (!(reg == 3 && call[0] == 0xe8 && call[5] == 0x90)
917 && !(call[0] == 0x67 && call[1] == 0xe8)
918 && !(indirect_call
919 && (call[1] & 0xf8) == 0x90
920 && (call[1] & 0x7) == reg))
142411ca
L		 921 return FALSE;
922 }
923 }
924 else
925 {
926 /* Check transition from LD access model. Only
6eaa7fb5
L		 927 leal foo@tlsldm(%ebx), %eax
928 call ___tls_get_addr@PLT
929 or
930 leal foo@tlsldm(%reg), %eax
931 call *___tls_get_addr@GOT(%reg)
932 which may be converted to
933 addr32 call ___tls_get_addr
142411ca
L		 934 can transit to different access model. */
935 if (type != 0x8d || (offset + 9) > sec->size)
936 return FALSE;
937
6eaa7fb5
L		 938 /* %eax can't be used as the GOT base register since it is
939 used to pass parameter to ___tls_get_addr. */
940 reg = val & 7;
941 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca 942 return FALSE;
142411ca 943
6eaa7fb5
L		 944 indirect_call = call[0] == 0xff;
945 if (!(reg == 3 && call[0] == 0xe8)
946 && !(call[0] == 0x67 && call[1] == 0xe8)
947 && !(indirect_call
948 && (call[1] & 0xf8) == 0x90
949 && (call[1] & 0x7) == reg))
950 return FALSE;
951 }
142411ca
L		 952
953 r_symndx = ELF32_R_SYM (rel[1].r_info);
954 if (r_symndx < symtab_hdr->sh_info)
955 return FALSE;
956
957 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1d4af308 958 if (h == NULL
0afcef53 959 || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
6eaa7fb5
L		 960 return FALSE;
961 else if (indirect_call)
962 return (ELF32_R_TYPE (rel[1].r_info) == R_386_GOT32X);
963 else
964 return (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
965 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
142411ca
L		 966
967 case R_386_TLS_IE:
968 /* Check transition from IE access model:
969 movl foo@indntpoff(%rip), %eax
970 movl foo@indntpoff(%rip), %reg
971 addl foo@indntpoff(%rip), %reg
972 */
973
974 if (offset < 1 || (offset + 4) > sec->size)
975 return FALSE;
976
977 /* Check "movl foo@tpoff(%rip), %eax" first. */
978 val = bfd_get_8 (abfd, contents + offset - 1);
979 if (val == 0xa1)
980 return TRUE;
981
982 if (offset < 2)
983 return FALSE;
984
985 /* Check movl|addl foo@tpoff(%rip), %reg. */
986 type = bfd_get_8 (abfd, contents + offset - 2);
987 return ((type == 0x8b || type == 0x03)
988 && (val & 0xc7) == 0x05);
989
990 case R_386_TLS_GOTIE:
991 case R_386_TLS_IE_32:
992 /* Check transition from {IE_32,GOTIE} access model:
993 subl foo@{tpoff,gontoff}(%reg1), %reg2
994 movl foo@{tpoff,gontoff}(%reg1), %reg2
995 addl foo@{tpoff,gontoff}(%reg1), %reg2
996 */
997
998 if (offset < 2 || (offset + 4) > sec->size)
999 return FALSE;
1000
1001 val = bfd_get_8 (abfd, contents + offset - 1);
1002 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1003 return FALSE;
1004
1005 type = bfd_get_8 (abfd, contents + offset - 2);
1006 return type == 0x8b || type == 0x2b || type == 0x03;
1007
1008 case R_386_TLS_GOTDESC:
1009 /* Check transition from GDesc access model:
1010 leal x@tlsdesc(%ebx), %eax
1011
1012 Make sure it's a leal adding ebx to a 32-bit offset
1013 into any register, although it's probably almost always
1014 going to be eax. */
1015
1016 if (offset < 2 || (offset + 4) > sec->size)
1017 return FALSE;
1018
1019 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1020 return FALSE;
1021
1022 val = bfd_get_8 (abfd, contents + offset - 1);
1023 return (val & 0xc7) == 0x83;
1024
1025 case R_386_TLS_DESC_CALL:
1026 /* Check transition from GDesc access model:
6eaa7fb5 1027 call *x@tlsdesc(%eax)
142411ca
L		 1028 */
1029 if (offset + 2 <= sec->size)
1030 {
6eaa7fb5
L		 1031 /* Make sure that it's a call *x@tlsdesc(%eax). */
1032 call = contents + offset;
1033 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1034 }
1035
1036 return FALSE;
1037
1038 default:
1039 abort ();
1040 }
1041}
1042
1043/* Return TRUE if the TLS access transition is OK or no transition
1044 will be performed. Update R_TYPE if there is a transition. */
1045
1046static bfd_boolean
1047elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1048 asection *sec, bfd_byte *contents,
1049 Elf_Internal_Shdr *symtab_hdr,
1050 struct elf_link_hash_entry **sym_hashes,
1051 unsigned int *r_type, int tls_type,
1052 const Elf_Internal_Rela *rel,
1053 const Elf_Internal_Rela *relend,
4c544807 1054 struct elf_link_hash_entry *h,
bedfd056
L		 1055 unsigned long r_symndx,
1056 bfd_boolean from_relocate_section)
142411ca
L		 1057{
1058 unsigned int from_type = *r_type;
1059 unsigned int to_type = from_type;
1060 bfd_boolean check = TRUE;
1061
bb1cb422
L		 1062 /* Skip TLS transition for functions. */
1063 if (h != NULL
1064 && (h->type == STT_FUNC
1065 || h->type == STT_GNU_IFUNC))
1066 return TRUE;
1067
142411ca 1068 switch (from_type)
13ae64f3
JJ		 1069 {
1070 case R_386_TLS_GD:
67a4f2b7
AO		 1071 case R_386_TLS_GOTDESC:
1072 case R_386_TLS_DESC_CALL:
13ae64f3 1073 case R_386_TLS_IE_32:
37e55690
JJ		 1074 case R_386_TLS_IE:
1075 case R_386_TLS_GOTIE:
0e1862bb 1076 if (bfd_link_executable (info))
142411ca
L		 1077 {
1078 if (h == NULL)
1079 to_type = R_386_TLS_LE_32;
1080 else if (from_type != R_386_TLS_IE
1081 && from_type != R_386_TLS_GOTIE)
1082 to_type = R_386_TLS_IE_32;
1083 }
1084
bedfd056
L		 1085 /* When we are called from elf_i386_relocate_section, there may
1086 be additional transitions based on TLS_TYPE. */
1087 if (from_relocate_section)
142411ca
L		 1088 {
1089 unsigned int new_to_type = to_type;
1090
51537393 1091 if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type))
142411ca
L		 1092 new_to_type = R_386_TLS_LE_32;
1093
1094 if (to_type == R_386_TLS_GD
1095 || to_type == R_386_TLS_GOTDESC
1096 || to_type == R_386_TLS_DESC_CALL)
1097 {
1098 if (tls_type == GOT_TLS_IE_POS)
1099 new_to_type = R_386_TLS_GOTIE;
1100 else if (tls_type & GOT_TLS_IE)
1101 new_to_type = R_386_TLS_IE_32;
1102 }
1103
1104 /* We checked the transition before when we were called from
1105 elf_i386_check_relocs. We only want to check the new
1106 transition which hasn't been checked before. */
1107 check = new_to_type != to_type && from_type == to_type;
1108 to_type = new_to_type;
1109 }
1110
1111 break;
1112
13ae64f3 1113 case R_386_TLS_LDM:
0e1862bb 1114 if (bfd_link_executable (info))
142411ca
L		 1115 to_type = R_386_TLS_LE_32;
1116 break;
1117
1118 default:
1119 return TRUE;
1120 }
1121
1122 /* Return TRUE if there is no transition. */
1123 if (from_type == to_type)
1124 return TRUE;
1125
1126 /* Check if the transition can be performed. */
1127 if (check
bedfd056 1128 && ! elf_i386_check_tls_transition (sec, contents,
142411ca
L		 1129 symtab_hdr, sym_hashes,
1130 from_type, rel, relend))
1131 {
2f629d23 1132 reloc_howto_type *from, *to;
4c544807 1133 const char *name;
142411ca
L		 1134
1135 from = elf_i386_rtype_to_howto (abfd, from_type);
1136 to = elf_i386_rtype_to_howto (abfd, to_type);
1137
4c544807
L		 1138 if (h)
1139 name = h->root.root.string;
1140 else
1141 {
0afcef53 1142 struct elf_x86_link_hash_table *htab;
4dfe6ac6 1143
0afcef53 1144 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 1145 if (htab == NULL)
1146 name = "*unknown*";
1147 else
1148 {
1149 Elf_Internal_Sym *isym;
1150
1151 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1152 abfd, r_symndx);
1153 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1154 }
4c544807
L		 1155 }
1156
4eca0228 1157 _bfd_error_handler
695344c0 1158 /* xgettext:c-format */
d42c267e 1159 (_("%B: TLS transition from %s to %s against `%s' at %#Lx "
142411ca 1160 "in section `%A' failed"),
c08bb8dd 1161 abfd, from->name, to->name, name,
d42c267e 1162 rel->r_offset, sec);
142411ca
L		 1163 bfd_set_error (bfd_error_bad_value);
1164 return FALSE;
13ae64f3
JJ		 1165 }
1166
142411ca
L		 1167 *r_type = to_type;
1168 return TRUE;
13ae64f3
JJ		 1169}
1170
c175a657
L		 1171/* With the local symbol, foo, we convert
1172 mov foo@GOT[(%reg1)], %reg2
1173 to
1174 lea foo[@GOTOFF(%reg1)], %reg2
1175 and convert
1176 call/jmp *foo@GOT[(%reg)]
1177 to
1178 nop call foo/jmp foo nop
1179 When PIC is false, convert
1180 test %reg1, foo@GOT[(%reg2)]
1181 to
1182 test $foo, %reg1
1183 and convert
1184 binop foo@GOT[(%reg1)], %reg2
1185 to
1186 binop $foo, %reg2
1187 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1188 instructions. */
1189
1190static
1191bfd_boolean
1192elf_i386_convert_load_reloc (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
1193 bfd_byte *contents,
6999821f 1194 unsigned int *r_type_p,
c175a657
L		 1195 Elf_Internal_Rela *irel,
1196 struct elf_link_hash_entry *h,
5e5e02ae 1197 bfd_boolean *converted,
c175a657
L		 1198 struct bfd_link_info *link_info)
1199{
0afcef53 1200 struct elf_x86_link_hash_table *htab;
c175a657
L		 1201 unsigned int opcode;
1202 unsigned int modrm;
1203 bfd_boolean baseless;
1204 Elf_Internal_Sym *isym;
1205 unsigned int addend;
1206 unsigned int nop;
1207 bfd_vma nop_offset;
1208 bfd_boolean is_pic;
1209 bfd_boolean to_reloc_32;
1210 unsigned int r_type;
1211 unsigned int r_symndx;
1212 bfd_vma roff = irel->r_offset;
0a27fed7
L		 1213 bfd_boolean local_ref;
1214 struct elf_x86_link_hash_entry *eh;
c175a657
L		 1215
1216 if (roff < 2)
1217 return TRUE;
1218
7d4d9709 1219 /* Addend for R_386_GOT32X relocations must be 0. */
c175a657
L		 1220 addend = bfd_get_32 (abfd, contents + roff);
1221 if (addend != 0)
1222 return TRUE;
1223
0afcef53 1224 htab = elf_x86_hash_table (link_info, I386_ELF_DATA);
c175a657
L		 1225 is_pic = bfd_link_pic (link_info);
1226
6999821f 1227 r_type = *r_type_p;
c175a657
L		 1228 r_symndx = ELF32_R_SYM (irel->r_info);
1229
1230 modrm = bfd_get_8 (abfd, contents + roff - 1);
1231 baseless = (modrm & 0xc7) == 0x5;
1232
7d4d9709 1233 if (baseless && is_pic)
c175a657
L		 1234 {
1235 /* For PIC, disallow R_386_GOT32X without a base register
7d4d9709 1236 since we don't know what the GOT base is. */
c175a657
L		 1237 const char *name;
1238
1239 if (h == NULL)
1240 {
1241 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
1242 r_symndx);
1243 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1244 }
1245 else
1246 name = h->root.root.string;
1247
4eca0228 1248 _bfd_error_handler
695344c0 1249 /* xgettext:c-format */
63a5468a
AM		 1250 (_("%B: direct GOT relocation R_386_GOT32X against `%s' without base"
1251 " register can not be used when making a shared object"),
c175a657
L		 1252 abfd, name);
1253 return FALSE;
1254 }
1255
1256 opcode = bfd_get_8 (abfd, contents + roff - 2);
1257
c175a657
L		 1258 /* Convert to R_386_32 if PIC is false or there is no base
1259 register. */
1260 to_reloc_32 = !is_pic || baseless;
1261
0a27fed7
L		 1262 eh = elf_x86_hash_entry (h);
1263
7d4d9709
L		 1264 /* Try to convert R_386_GOT32X. Get the symbol referred to by the
1265 reloc. */
c175a657
L		 1266 if (h == NULL)
1267 {
1268 if (opcode == 0x0ff)
1269 /* Convert "call/jmp *foo@GOT[(%reg)]". */
1270 goto convert_branch;
1271 else
1272 /* Convert "mov foo@GOT[(%reg1)], %reg2",
1273 "test %reg1, foo@GOT(%reg2)" and
1274 "binop foo@GOT[(%reg1)], %reg2". */
1275 goto convert_load;
1276 }
1277
0a27fed7
L		 1278 /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */
1279 local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h);
1280
c175a657
L		 1281 /* Undefined weak symbol is only bound locally in executable
1282 and its reference is resolved as 0. */
0a27fed7
L		 1283 if (h->root.type == bfd_link_hash_undefweak
1284 && !eh->linker_def
1285 && local_ref)
c175a657
L		 1286 {
1287 if (opcode == 0xff)
1288 {
1289 /* No direct branch to 0 for PIC. */
1290 if (is_pic)
1291 return TRUE;
1292 else
1293 goto convert_branch;
1294 }
1295 else
1296 {
1297 /* We can convert load of address 0 to R_386_32. */
1298 to_reloc_32 = TRUE;
1299 goto convert_load;
1300 }
1301 }
1302
1303 if (opcode == 0xff)
1304 {
1305 /* We have "call/jmp *foo@GOT[(%reg)]". */
1306 if ((h->root.type == bfd_link_hash_defined
1307 || h->root.type == bfd_link_hash_defweak)
0a27fed7 1308 && local_ref)
c175a657
L		 1309 {
1310 /* The function is locally defined. */
1311convert_branch:
1312 /* Convert R_386_GOT32X to R_386_PC32. */
1313 if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
1314 {
1315 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1316 is a nop prefix. */
1317 modrm = 0xe8;
6eaa7fb5
L		 1318 /* To support TLS optimization, always use addr32 prefix
1319 for "call *___tls_get_addr@GOT(%reg)". */
1d4af308 1320 if (eh && eh->tls_get_addr)
c175a657 1321 {
6eaa7fb5
L		 1322 nop = 0x67;
1323 nop_offset = irel->r_offset - 2;
c175a657
L		 1324 }
1325 else
6eaa7fb5
L		 1326 {
1327 nop = link_info->call_nop_byte;
1328 if (link_info->call_nop_as_suffix)
1329 {
1330 nop_offset = roff + 3;
1331 irel->r_offset -= 1;
1332 }
1333 else
1334 nop_offset = roff - 2;
1335 }
c175a657
L		 1336 }
1337 else
1338 {
1339 /* Convert to "jmp foo nop". */
1340 modrm = 0xe9;
1341 nop = NOP_OPCODE;
1342 nop_offset = roff + 3;
1343 irel->r_offset -= 1;
1344 }
1345
1346 bfd_put_8 (abfd, nop, contents + nop_offset);
1347 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1348 /* When converting to PC-relative relocation, we
1349 need to adjust addend by -4. */
1350 bfd_put_32 (abfd, -4, contents + irel->r_offset);
1351 irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
6999821f 1352 *r_type_p = R_386_PC32;
5e5e02ae 1353 *converted = TRUE;
c175a657
L		 1354 }
1355 }
1356 else
1357 {
1358 /* We have "mov foo@GOT[(%re1g)], %reg2",
1359 "test %reg1, foo@GOT(%reg2)" and
1360 "binop foo@GOT[(%reg1)], %reg2".
1361
1362 Avoid optimizing _DYNAMIC since ld.so may use its
1363 link-time address. */
1364 if (h == htab->elf.hdynamic)
1365 return TRUE;
1366
1367 /* def_regular is set by an assignment in a linker script in
cbd0eecf
L		 1368 bfd_elf_record_link_assignment. start_stop is set on
1369 __start_SECNAME/__stop_SECNAME which mark section SECNAME. */
1370 if (h->start_stop
0a27fed7 1371 || eh->linker_def
cbd0eecf
L		 1372 || ((h->def_regular
1373 || h->root.type == bfd_link_hash_defined
1374 || h->root.type == bfd_link_hash_defweak)
0a27fed7 1375 && local_ref))
c175a657
L		 1376 {
1377convert_load:
1378 if (opcode == 0x8b)
1379 {
1380 if (to_reloc_32)
1381 {
1382 /* Convert "mov foo@GOT[(%reg1)], %reg2" to
1383 "mov $foo, %reg2" with R_386_32. */
1384 r_type = R_386_32;
1385 modrm = 0xc0 | (modrm & 0x38) >> 3;
1386 bfd_put_8 (abfd, modrm, contents + roff - 1);
1387 opcode = 0xc7;
1388 }
1389 else
1390 {
1391 /* Convert "mov foo@GOT(%reg1), %reg2" to
1392 "lea foo@GOTOFF(%reg1), %reg2". */
1393 r_type = R_386_GOTOFF;
1394 opcode = 0x8d;
1395 }
1396 }
1397 else
1398 {
1399 /* Only R_386_32 is supported. */
1400 if (!to_reloc_32)
1401 return TRUE;
1402
1403 if (opcode == 0x85)
1404 {
1405 /* Convert "test %reg1, foo@GOT(%reg2)" to
1406 "test $foo, %reg1". */
1407 modrm = 0xc0 | (modrm & 0x38) >> 3;
1408 opcode = 0xf7;
1409 }
1410 else
1411 {
1412 /* Convert "binop foo@GOT(%reg1), %reg2" to
1413 "binop $foo, %reg2". */
1414 modrm = (0xc0
1415 | (modrm & 0x38) >> 3
1416 | (opcode & 0x3c));
1417 opcode = 0x81;
1418 }
1419 bfd_put_8 (abfd, modrm, contents + roff - 1);
1420 r_type = R_386_32;
1421 }
1422
1423 bfd_put_8 (abfd, opcode, contents + roff - 2);
1424 irel->r_info = ELF32_R_INFO (r_symndx, r_type);
6999821f 1425 *r_type_p = r_type;
5e5e02ae 1426 *converted = TRUE;
c175a657
L		 1427 }
1428 }
1429
1430 return TRUE;
1431}
1432
c1d11331
L		 1433/* Rename some of the generic section flags to better document how they
1434 are used here. */
6999821f 1435#define check_relocs_failed sec_flg0
c1d11331 1436
252b5132 1437/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1438 calculate needed space in the global offset table, procedure linkage
1439 table, and dynamic reloc sections. */
252b5132 1440
b34976b6 1441static bfd_boolean
55fd94b0
AM		 1442elf_i386_check_relocs (bfd *abfd,
1443 struct bfd_link_info *info,
1444 asection *sec,
1445 const Elf_Internal_Rela *relocs)
252b5132 1446{
0afcef53 1447 struct elf_x86_link_hash_table *htab;
252b5132
RH		 1448 Elf_Internal_Shdr *symtab_hdr;
1449 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1450 const Elf_Internal_Rela *rel;
1451 const Elf_Internal_Rela *rel_end;
252b5132 1452 asection *sreloc;
bedfd056 1453 bfd_byte *contents;
5e5e02ae 1454 bfd_boolean converted;
252b5132 1455
0e1862bb 1456 if (bfd_link_relocatable (info))
b34976b6 1457 return TRUE;
252b5132 1458
081b1afe
L		 1459 /* Don't do anything special with non-loaded, non-alloced sections.
1460 In particular, any relocs in such sections should not affect GOT
1461 and PLT reference counting (ie. we don't allow them to create GOT
1462 or PLT entries), there's no possibility or desire to optimize TLS
1463 relocs, and there's not much point in propagating relocs to shared
1464 libs that the dynamic linker won't relocate. */
1465 if ((sec->flags & SEC_ALLOC) == 0)
1466 return TRUE;
1467
0afcef53 1468 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6 1469 if (htab == NULL)
c337a162
L		 1470 {
1471 sec->check_relocs_failed = 1;
1472 return FALSE;
1473 }
4dfe6ac6 1474
fe53b4a4
L		 1475 BFD_ASSERT (is_x86_elf (abfd, htab));
1476
bedfd056
L		 1477 /* Get the section contents. */
1478 if (elf_section_data (sec)->this_hdr.contents != NULL)
1479 contents = elf_section_data (sec)->this_hdr.contents;
1480 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1481 {
1482 sec->check_relocs_failed = 1;
1483 return FALSE;
1484 }
1485
0ffa91dd 1486 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1487 sym_hashes = elf_sym_hashes (abfd);
252b5132 1488
5e5e02ae
L		 1489 converted = FALSE;
1490
252b5132
RH		 1491 sreloc = NULL;
1492
1493 rel_end = relocs + sec->reloc_count;
1494 for (rel = relocs; rel < rel_end; rel++)
1495 {
13ae64f3 1496 unsigned int r_type;
d42c267e 1497 unsigned int r_symndx;
252b5132 1498 struct elf_link_hash_entry *h;
0afcef53 1499 struct elf_x86_link_hash_entry *eh;
4c544807
L		 1500 Elf_Internal_Sym *isym;
1501 const char *name;
06a6a421 1502 bfd_boolean size_reloc;
252b5132
RH		 1503
1504 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1505 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1506
d9bc7a44 1507 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1508 {
695344c0 1509 /* xgettext:c-format */
4eca0228
AM		 1510 _bfd_error_handler (_("%B: bad symbol index: %d"),
1511 abfd, r_symndx);
c337a162 1512 goto error_return;
f5f31454
L		 1513 }
1514
252b5132 1515 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1516 {
1517 /* A local symbol. */
c2e61a4e
L		 1518 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1519 abfd, r_symndx);
1520 if (isym == NULL)
c337a162 1521 goto error_return;
c25bc9fc
L		 1522
1523 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1524 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1525 {
0afcef53 1526 h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1527 if (h == NULL)
c337a162 1528 goto error_return;
6bbec505 1529
c25bc9fc 1530 /* Fake a STT_GNU_IFUNC symbol. */
6322e5c5
L		 1531 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
1532 isym, NULL);
c25bc9fc
L		 1533 h->type = STT_GNU_IFUNC;
1534 h->def_regular = 1;
1535 h->ref_regular = 1;
1536 h->forced_local = 1;
1537 h->root.type = bfd_link_hash_defined;
1538 }
1539 else
1540 h = NULL;
1541 }
252b5132 1542 else
71cb9464 1543 {
4c544807 1544 isym = NULL;
71cb9464
L		 1545 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1546 while (h->root.type == bfd_link_hash_indirect
1547 || h->root.type == bfd_link_hash_warning)
1548 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1549 }
cbe950e9 1550
0afcef53 1551 eh = (struct elf_x86_link_hash_entry *) h;
c25bc9fc
L		 1552 if (h != NULL)
1553 {
f604c2a2
L		 1554 if (r_type == R_386_GOTOFF)
1555 eh->gotoff_ref = 1;
cbe950e9 1556
ad1e85de
L		 1557 /* It is referenced by a non-shared object. */
1558 h->ref_regular = 1;
bc4e12de 1559 h->root.non_ir_ref_regular = 1;
13a2df29
L		 1560
1561 if (h->type == STT_GNU_IFUNC)
1562 elf_tdata (info->output_bfd)->has_gnu_symbols
1563 |= elf_gnu_symbol_ifunc;
71cb9464 1564 }
252b5132 1565
6999821f
L		 1566 if (r_type == R_386_GOT32X
1567 && (h == NULL || h->type != STT_GNU_IFUNC))
1568 {
1569 Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel;
1570 if (!elf_i386_convert_load_reloc (abfd, symtab_hdr, contents,
5e5e02ae
L		 1571 &r_type, irel, h,
1572 &converted, info))
6999821f
L		 1573 goto error_return;
1574 }
1575
bedfd056 1576 if (! elf_i386_tls_transition (info, abfd, sec, contents,
142411ca
L		 1577 symtab_hdr, sym_hashes,
1578 &r_type, GOT_UNKNOWN,
bedfd056 1579 rel, rel_end, h, r_symndx, FALSE))
c337a162 1580 goto error_return;
13ae64f3
JJ		 1581
1582 switch (r_type)
252b5132 1583 {
37e55690 1584 case R_386_TLS_LDM:
0f09b4d8 1585 htab->tls_ld_or_ldm_got.refcount = 1;
37e55690
JJ		 1586 goto create_got;
1587
1588 case R_386_PLT32:
1589 /* This symbol requires a procedure linkage table entry. We
1590 actually build the entry in adjust_dynamic_symbol,
1591 because this might be a case of linking PIC code which is
1592 never referenced by a dynamic object, in which case we
1593 don't need to generate a procedure linkage table entry
1594 after all. */
1595
1596 /* If this is a local symbol, we resolve it directly without
1597 creating a procedure linkage table entry. */
1598 if (h == NULL)
1599 continue;
1600
98b273dc 1601 eh->zero_undefweak &= 0x2;
f5385ebf 1602 h->needs_plt = 1;
37e55690
JJ		 1603 h->plt.refcount += 1;
1604 break;
1605
6a3e1bae 1606 case R_386_SIZE32:
06a6a421 1607 size_reloc = TRUE;
6a3e1bae
L		 1608 goto do_size;
1609
13ae64f3 1610 case R_386_TLS_IE_32:
37e55690
JJ		 1611 case R_386_TLS_IE:
1612 case R_386_TLS_GOTIE:
0e1862bb 1613 if (!bfd_link_executable (info))
13ae64f3 1614 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1615 /* Fall through */
1616
252b5132 1617 case R_386_GOT32:
02a86693 1618 case R_386_GOT32X:
13ae64f3 1619 case R_386_TLS_GD:
67a4f2b7
AO		 1620 case R_386_TLS_GOTDESC:
1621 case R_386_TLS_DESC_CALL:
252b5132 1622 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1623 {
1624 int tls_type, old_tls_type;
1625
1626 switch (r_type)
1627 {
1628 default:
02a86693
L		 1629 case R_386_GOT32:
1630 case R_386_GOT32X:
1631 tls_type = GOT_NORMAL;
1632 break;
13ae64f3 1633 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1634 case R_386_TLS_GOTDESC:
1635 case R_386_TLS_DESC_CALL:
1636 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1637 case R_386_TLS_IE_32:
1638 if (ELF32_R_TYPE (rel->r_info) == r_type)
1639 tls_type = GOT_TLS_IE_NEG;
1640 else
ebcfb3c0
JJ		 1641 /* If this is a GD->IE transition, we may use either of
1642 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1643 tls_type = GOT_TLS_IE;
1644 break;
1645 case R_386_TLS_IE:
1646 case R_386_TLS_GOTIE:
1647 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1648 }
1649
1650 if (h != NULL)
1651 {
0f09b4d8 1652 h->got.refcount = 1;
0afcef53 1653 old_tls_type = elf_x86_hash_entry (h)->tls_type;
13ae64f3
JJ		 1654 }
1655 else
1656 {
1657 bfd_signed_vma *local_got_refcounts;
1658
1659 /* This is a global offset table entry for a local symbol. */
1660 local_got_refcounts = elf_local_got_refcounts (abfd);
1661 if (local_got_refcounts == NULL)
1662 {
1663 bfd_size_type size;
1664
1665 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1666 size *= (sizeof (bfd_signed_vma)
1667 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1668 local_got_refcounts = (bfd_signed_vma *)
1669 bfd_zalloc (abfd, size);
13ae64f3 1670 if (local_got_refcounts == NULL)
c337a162 1671 goto error_return;
13ae64f3 1672 elf_local_got_refcounts (abfd) = local_got_refcounts;
0afcef53 1673 elf_x86_local_tlsdesc_gotent (abfd)
67a4f2b7 1674 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
0afcef53 1675 elf_x86_local_got_tls_type (abfd)
67a4f2b7 1676 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3 1677 }
0f09b4d8 1678 local_got_refcounts[r_symndx] = 1;
0afcef53 1679 old_tls_type = elf_x86_local_got_tls_type (abfd) [r_symndx];
13ae64f3
JJ		 1680 }
1681
37e55690
JJ		 1682 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1683 tls_type |= old_tls_type;
13ae64f3
JJ		 1684 /* If a TLS symbol is accessed using IE at least once,
1685 there is no point to use dynamic model for it. */
ebcfb3c0 1686 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1687 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1688 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1689 {
67a4f2b7 1690 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1691 tls_type = old_tls_type;
67a4f2b7
AO		 1692 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1693 && GOT_TLS_GD_ANY_P (tls_type))
1694 tls_type |= old_tls_type;
13ae64f3
JJ		 1695 else
1696 {
09a24cbf 1697 if (h)
4c544807
L		 1698 name = h->root.root.string;
1699 else
1700 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1701 NULL);
4eca0228 1702 _bfd_error_handler
695344c0 1703 /* xgettext:c-format */
d003868e 1704 (_("%B: `%s' accessed both as normal and "
55fd94b0 1705 "thread local symbol"),
4c544807 1706 abfd, name);
68c4a57e 1707 bfd_set_error (bfd_error_bad_value);
c337a162 1708 goto error_return;
13ae64f3
JJ		 1709 }
1710 }
1711
1712 if (old_tls_type != tls_type)
1713 {
1714 if (h != NULL)
0afcef53 1715 elf_x86_hash_entry (h)->tls_type = tls_type;
13ae64f3 1716 else
0afcef53 1717 elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
13ae64f3
JJ		 1718 }
1719 }
0ac8d2ca
AM		 1720 /* Fall through */
1721
1722 case R_386_GOTOFF:
1723 case R_386_GOTPC:
13ae64f3 1724 create_got:
37e55690 1725 if (r_type != R_386_TLS_IE)
aec6b87e
L		 1726 {
1727 if (eh != NULL)
98b273dc 1728 eh->zero_undefweak &= 0x2;
aec6b87e
L		 1729 break;
1730 }
37e55690 1731 /* Fall through */
252b5132 1732
37e55690
JJ		 1733 case R_386_TLS_LE_32:
1734 case R_386_TLS_LE:
aec6b87e 1735 if (eh != NULL)
98b273dc 1736 eh->zero_undefweak &= 0x2;
0e1862bb 1737 if (bfd_link_executable (info))
37e55690 1738 break;
bffbf940 1739 info->flags |= DF_STATIC_TLS;
aec6b87e 1740 goto do_relocation;
252b5132
RH		 1741
1742 case R_386_32:
1743 case R_386_PC32:
aec6b87e 1744 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
98b273dc 1745 eh->zero_undefweak |= 0x2;
aec6b87e 1746do_relocation:
bf52d7c7
L		 1747 /* We are called after all symbols have been resolved. Only
1748 relocation against STT_GNU_IFUNC symbol must go through
1749 PLT. */
d1ed1c7d
L		 1750 if (h != NULL
1751 && (bfd_link_executable (info)
bf52d7c7 1752 || h->type == STT_GNU_IFUNC))
6725bdbf 1753 {
12d0ee4a 1754 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1755 need a copy reloc. We can't check reliably at this
1756 stage whether the section is read-only, as input
1757 sections have not yet been mapped to output sections.
1758 Tentatively set the flag for now, and correct in
1759 adjust_dynamic_symbol. */
f5385ebf 1760 h->non_got_ref = 1;
12d0ee4a 1761
233cc9c1
L		 1762 /* We may need a .plt entry if the symbol is a function
1763 defined in a shared lib or is a STT_GNU_IFUNC function
1764 referenced from the code or read-only section. */
34bb2571
L		 1765 if (!h->def_regular
1766 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
233cc9c1
L		 1767 h->plt.refcount += 1;
1768
4b627c18
L		 1769 if (r_type == R_386_PC32)
1770 {
1771 /* Since something like ".long foo - ." may be used
1772 as pointer, make sure that PLT is used if foo is
1773 a function defined in a shared library. */
1774 if ((sec->flags & SEC_CODE) == 0)
1775 h->pointer_equality_needed = 1;
74437ea2
L		 1776 else if (h->type == STT_GNU_IFUNC
1777 && bfd_link_pic (info))
1778 {
6322e5c5
L		 1779 _bfd_error_handler
1780 /* xgettext:c-format */
1781 (_("%B: unsupported non-PIC call to IFUNC `%s'"),
1782 abfd, h->root.root.string);
74437ea2
L		 1783 bfd_set_error (bfd_error_bad_value);
1784 goto error_return;
1785 }
4b627c18
L		 1786 }
1787 else
04ebc307
L		 1788 {
1789 h->pointer_equality_needed = 1;
1790 /* R_386_32 can be resolved at run-time. */
1791 if (r_type == R_386_32
1792 && (sec->flags & SEC_READONLY) == 0)
1793 eh->func_pointer_refcount += 1;
1794 }
6725bdbf 1795 }
7843f00e 1796
06a6a421 1797 size_reloc = FALSE;
6a3e1bae 1798do_size:
daf1c414
L		 1799 if (NEED_DYNAMIC_RELOCATION_P (info, h, sec, r_type,
1800 R_386_32))
252b5132 1801 {
e03a8ed8
L		 1802 struct elf_dyn_relocs *p;
1803 struct elf_dyn_relocs **head;
ec338859 1804
12d0ee4a
AM		 1805 /* We must copy these reloc types into the output file.
1806 Create a reloc section in dynobj and make room for
1807 this reloc. */
252b5132
RH		 1808 if (sreloc == NULL)
1809 {
83bac4b0
NC		 1810 sreloc = _bfd_elf_make_dynamic_reloc_section
1811 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1812
252b5132 1813 if (sreloc == NULL)
c337a162 1814 goto error_return;
252b5132
RH		 1815 }
1816
0c715baa
AM		 1817 /* If this is a global symbol, we count the number of
1818 relocations we need for this symbol. */
1819 if (h != NULL)
252b5132 1820 {
d5597ebc 1821 head = &eh->dyn_relocs;
0c715baa
AM		 1822 }
1823 else
1824 {
ec338859
AM		 1825 /* Track dynamic relocs needed for local syms too.
1826 We really need local syms available to do this
1827 easily. Oh well. */
87d72d41 1828 void **vpp;
ec338859 1829 asection *s;
87d72d41
AM		 1830
1831 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1832 abfd, r_symndx);
1833 if (isym == NULL)
c337a162 1834 goto error_return;
87d72d41
AM		 1835
1836 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1837 if (s == NULL)
87d72d41 1838 s = sec;
ec338859 1839
e81d3500 1840 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1841 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1842 }
1843
1844 p = *head;
1845 if (p == NULL || p->sec != sec)
1846 {
1847 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1848 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1849 amt);
ec338859 1850 if (p == NULL)
c337a162 1851 goto error_return;
ec338859
AM		 1852 p->next = *head;
1853 *head = p;
1854 p->sec = sec;
1855 p->count = 0;
1856 p->pc_count = 0;
252b5132 1857 }
ec338859
AM		 1858
1859 p->count += 1;
06a6a421
L		 1860 /* Count size relocation as PC-relative relocation. */
1861 if (r_type == R_386_PC32 || size_reloc)
ec338859 1862 p->pc_count += 1;
252b5132 1863 }
252b5132
RH		 1864 break;
1865
1866 /* This relocation describes the C++ object vtable hierarchy.
1867 Reconstruct it for later use during GC. */
1868 case R_386_GNU_VTINHERIT:
d17e0c6e 1869 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c337a162 1870 goto error_return;
252b5132
RH		 1871 break;
1872
1873 /* This relocation describes which C++ vtable entries are actually
1874 used. Record for later use during GC. */
1875 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1876 BFD_ASSERT (h != NULL);
1877 if (h != NULL
1878 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c337a162 1879 goto error_return;
252b5132
RH		 1880 break;
1881
1882 default:
1883 break;
1884 }
1885 }
1886
bedfd056
L		 1887 if (elf_section_data (sec)->this_hdr.contents != contents)
1888 {
5e5e02ae 1889 if (!converted && !info->keep_memory)
bedfd056
L		 1890 free (contents);
1891 else
1892 {
5e5e02ae
L		 1893 /* Cache the section contents for elf_link_input_bfd if any
1894 load is converted or --no-keep-memory isn't used. */
bedfd056
L		 1895 elf_section_data (sec)->this_hdr.contents = contents;
1896 }
1897 }
1898
5e5e02ae
L		 1899 /* Cache relocations if any load is converted. */
1900 if (elf_section_data (sec)->relocs != relocs && converted)
1901 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
1902
b34976b6 1903 return TRUE;
c337a162
L		 1904
1905error_return:
bedfd056
L		 1906 if (elf_section_data (sec)->this_hdr.contents != contents)
1907 free (contents);
c337a162
L		 1908 sec->check_relocs_failed = 1;
1909 return FALSE;
252b5132
RH		 1910}
1911
38701953
AM		 1912/* Set the correct type for an x86 ELF section. We do this by the
1913 section name, which is a hack, but ought to work. */
1914
b34976b6 1915static bfd_boolean
55fd94b0
AM		 1916elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1917 Elf_Internal_Shdr *hdr,
1918 asection *sec)
38701953 1919{
91d6fa6a 1920 const char *name;
38701953
AM		 1921
1922 name = bfd_get_section_name (abfd, sec);
1923
1924 /* This is an ugly, but unfortunately necessary hack that is
1925 needed when producing EFI binaries on x86. It tells
1926 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1927 containing ELF relocation info. We need this hack in order to
1928 be able to generate ELF binaries that can be translated into
1929 EFI applications (which are essentially COFF objects). Those
1930 files contain a COFF ".reloc" section inside an ELFNN object,
1931 which would normally cause BFD to segfault because it would
1932 attempt to interpret this section as containing relocation
1933 entries for section "oc". With this hack enabled, ".reloc"
1934 will be treated as a normal data section, which will avoid the
1935 segfault. However, you won't be able to create an ELFNN binary
1936 with a section named "oc" that needs relocations, but that's
1937 the kind of ugly side-effects you get when detecting section
1938 types based on their names... In practice, this limitation is
1939 unlikely to bite. */
1940 if (strcmp (name, ".reloc") == 0)
1941 hdr->sh_type = SHT_PROGBITS;
1942
b34976b6 1943 return TRUE;
38701953
AM		 1944}
1945
13ae64f3
JJ		 1946/* Return the relocation value for @tpoff relocation
1947 if STT_TLS virtual address is ADDRESS. */
1948
1949static bfd_vma
eb4ff4d6 1950elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 1951{
e1918d23 1952 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 1953 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
1954 bfd_vma static_tls_size;
13ae64f3 1955
e1918d23
AM		 1956 /* If tls_sec is NULL, we should have signalled an error already. */
1957 if (htab->tls_sec == NULL)
6a30718d 1958 return 0;
7dc98aea
RO		 1959
1960 /* Consider special static TLS alignment requirements. */
1961 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
1962 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 1963}
1964
252b5132
RH		 1965/* Relocate an i386 ELF section. */
1966
b34976b6 1967static bfd_boolean
55fd94b0
AM		 1968elf_i386_relocate_section (bfd *output_bfd,
1969 struct bfd_link_info *info,
1970 bfd *input_bfd,
1971 asection *input_section,
1972 bfd_byte *contents,
1973 Elf_Internal_Rela *relocs,
1974 Elf_Internal_Sym *local_syms,
1975 asection **local_sections)
252b5132 1976{
0afcef53 1977 struct elf_x86_link_hash_table *htab;
252b5132
RH		 1978 Elf_Internal_Shdr *symtab_hdr;
1979 struct elf_link_hash_entry **sym_hashes;
1980 bfd_vma *local_got_offsets;
67a4f2b7 1981 bfd_vma *local_tlsdesc_gotents;
252b5132 1982 Elf_Internal_Rela *rel;
60f2e42e 1983 Elf_Internal_Rela *wrel;
252b5132 1984 Elf_Internal_Rela *relend;
3348747a 1985 bfd_boolean is_vxworks_tls;
25e762b9 1986 unsigned plt_entry_size;
252b5132 1987
c337a162
L		 1988 /* Skip if check_relocs failed. */
1989 if (input_section->check_relocs_failed)
1990 return FALSE;
1991
0afcef53 1992 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 1993 if (htab == NULL)
1994 return FALSE;
fe53b4a4
L		 1995
1996 BFD_ASSERT (is_x86_elf (input_bfd, htab));
1997
0ffa91dd 1998 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 1999 sym_hashes = elf_sym_hashes (input_bfd);
2000 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2001 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 2002 /* We have to handle relocations in vxworks .tls_vars sections
2003 specially, because the dynamic loader is 'weird'. */
851b6fa1 2004 is_vxworks_tls = (htab->target_os == is_vxworks
0e1862bb 2005 && bfd_link_pic (info)
3348747a
NS		 2006 && !strcmp (input_section->output_section->name,
2007 ".tls_vars"));
252b5132 2008
0afcef53 2009 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2010
765e526c 2011 plt_entry_size = htab->plt.plt_entry_size;
25e762b9 2012
60f2e42e 2013 rel = wrel = relocs;
252b5132 2014 relend = relocs + input_section->reloc_count;
60f2e42e 2015 for (; rel < relend; wrel++, rel++)
252b5132 2016 {
419414ea 2017 unsigned int r_type, r_type_tls;
252b5132
RH		 2018 reloc_howto_type *howto;
2019 unsigned long r_symndx;
2020 struct elf_link_hash_entry *h;
0afcef53 2021 struct elf_x86_link_hash_entry *eh;
252b5132
RH		 2022 Elf_Internal_Sym *sym;
2023 asection *sec;
dd7e64d4 2024 bfd_vma off, offplt, plt_offset;
252b5132 2025 bfd_vma relocation;
b34976b6 2026 bfd_boolean unresolved_reloc;
252b5132 2027 bfd_reloc_status_type r;
1b452ec6 2028 unsigned int indx;
13ae64f3 2029 int tls_type;
1788fc08 2030 bfd_vma st_size;
dd7e64d4 2031 asection *resolved_plt;
aec6b87e 2032 bfd_boolean resolved_to_zero;
e133d005 2033 bfd_boolean relative_reloc;
252b5132
RH		 2034
2035 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 2036 if (r_type == R_386_GNU_VTINHERIT
2037 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 2038 {
2039 if (wrel != rel)
2040 *wrel = *rel;
2041 continue;
2042 }
dc47f327 2043
55fd94b0 2044 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 2045 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2046 >= R_386_ext - R_386_standard)
2047 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 2048 >= R_386_ext2 - R_386_ext))
47aeb64c
NC		 2049 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2050
1b452ec6 2051 howto = elf_howto_table + indx;
252b5132
RH		 2052
2053 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 2054 h = NULL;
2055 sym = NULL;
2056 sec = NULL;
b34976b6 2057 unresolved_reloc = FALSE;
252b5132
RH		 2058 if (r_symndx < symtab_hdr->sh_info)
2059 {
2060 sym = local_syms + r_symndx;
2061 sec = local_sections[r_symndx];
2062 relocation = (sec->output_section->vma
2063 + sec->output_offset
2064 + sym->st_value);
1788fc08 2065 st_size = sym->st_size;
ab96bf03
AM		 2066
2067 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2068 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 2069 || (bfd_link_relocatable (info)
ab96bf03 2070 && sec->output_offset != 0)))
f8df10f4 2071 {
f8df10f4 2072 bfd_vma addend;
4a335f3d 2073 bfd_byte *where = contents + rel->r_offset;
f8df10f4 2074
4a335f3d 2075 switch (howto->size)
f8df10f4 2076 {
4a335f3d
AM		 2077 case 0:
2078 addend = bfd_get_8 (input_bfd, where);
2079 if (howto->pc_relative)
2080 {
2081 addend = (addend ^ 0x80) - 0x80;
2082 addend += 1;
2083 }
2084 break;
2085 case 1:
2086 addend = bfd_get_16 (input_bfd, where);
2087 if (howto->pc_relative)
2088 {
2089 addend = (addend ^ 0x8000) - 0x8000;
2090 addend += 2;
2091 }
2092 break;
2093 case 2:
2094 addend = bfd_get_32 (input_bfd, where);
2095 if (howto->pc_relative)
2096 {
2097 addend = (addend ^ 0x80000000) - 0x80000000;
2098 addend += 4;
2099 }
2100 break;
2101 default:
2102 abort ();
f8df10f4
JJ		 2103 }
2104
0e1862bb 2105 if (bfd_link_relocatable (info))
ab96bf03
AM		 2106 addend += sec->output_offset;
2107 else
2108 {
2109 asection *msec = sec;
2110 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2111 addend);
2112 addend -= relocation;
2113 addend += msec->output_section->vma + msec->output_offset;
2114 }
4a335f3d
AM		 2115
2116 switch (howto->size)
2117 {
2118 case 0:
16a10388 2119 /* FIXME: overflow checks. */
4a335f3d
AM		 2120 if (howto->pc_relative)
2121 addend -= 1;
2122 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 2123 break;
2124 case 1:
2125 if (howto->pc_relative)
2126 addend -= 2;
2127 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 2128 break;
2129 case 2:
2130 if (howto->pc_relative)
2131 addend -= 4;
2132 bfd_put_32 (input_bfd, addend, where);
2133 break;
2134 }
f8df10f4 2135 }
0e1862bb 2136 else if (!bfd_link_relocatable (info)
1f85278f 2137 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 2138 {
2139 /* Relocate against local STT_GNU_IFUNC symbol. */
0afcef53
L		 2140 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd, rel,
2141 FALSE);
c25bc9fc
L		 2142 if (h == NULL)
2143 abort ();
2144
23209a78 2145 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2146 h->root.u.def.value = sym->st_value;
2147 h->root.u.def.section = sec;
2148 }
252b5132
RH		 2149 }
2150 else
2151 {
3d540e93 2152 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2153 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 2154
b2a8e766
AM		 2155 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2156 r_symndx, symtab_hdr, sym_hashes,
2157 h, sec, relocation,
62d887d4 2158 unresolved_reloc, warned, ignored);
1788fc08 2159 st_size = h->size;
252b5132
RH		 2160 }
2161
dbaa2011 2162 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2163 {
2164 _bfd_clear_contents (howto, input_bfd, input_section,
2165 contents + rel->r_offset);
2166 wrel->r_offset = rel->r_offset;
2167 wrel->r_info = 0;
2168 wrel->r_addend = 0;
2169
2170 /* For ld -r, remove relocations in debug sections against
2171 sections defined in discarded sections. Not done for
2172 eh_frame editing code expects to be present. */
2173 if (bfd_link_relocatable (info)
2174 && (input_section->flags & SEC_DEBUGGING))
2175 wrel--;
2176
2177 continue;
2178 }
9635fe29 2179
0e1862bb 2180 if (bfd_link_relocatable (info))
2d5da473
L		 2181 {
2182 if (wrel != rel)
2183 *wrel = *rel;
2184 continue;
2185 }
ab96bf03 2186
0afcef53 2187 eh = (struct elf_x86_link_hash_entry *) h;
ee2fdd6f 2188
cbe950e9
L		 2189 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2190 it here if it is defined in a non-shared object. */
2191 if (h != NULL
2192 && h->type == STT_GNU_IFUNC
2193 && h->def_regular)
2194 {
ee2fdd6f 2195 asection *gotplt, *base_got;
cbe950e9 2196 bfd_vma plt_index;
4c544807 2197 const char *name;
cbe950e9 2198
97dc35c8
L		 2199 if ((input_section->flags & SEC_ALLOC) == 0)
2200 {
2201 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2202 sections because such sections are not SEC_ALLOC and
2203 thus ld.so will not process them. */
2204 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2205 continue;
97dc35c8
L		 2206 abort ();
2207 }
cbe950e9
L		 2208
2209 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 2210 if (htab->elf.splt != NULL)
cbe950e9 2211 {
ee2fdd6f
L		 2212 if (htab->plt_second != NULL)
2213 {
2214 resolved_plt = htab->plt_second;
2215 plt_offset = eh->plt_second.offset;
2216 }
2217 else
2218 {
2219 resolved_plt = htab->elf.splt;
2220 plt_offset = h->plt.offset;
2221 }
6de2ae4a 2222 gotplt = htab->elf.sgotplt;
cbe950e9
L		 2223 }
2224 else
2225 {
ee2fdd6f
L		 2226 resolved_plt = htab->elf.iplt;
2227 plt_offset = h->plt.offset;
6de2ae4a 2228 gotplt = htab->elf.igotplt;
cbe950e9
L		 2229 }
2230
cbe950e9
L		 2231 switch (r_type)
2232 {
2233 default:
233cc9c1 2234 break;
cbe950e9
L		 2235
2236 case R_386_GOT32:
02a86693 2237 case R_386_GOT32X:
6de2ae4a 2238 base_got = htab->elf.sgot;
cbe950e9
L		 2239 off = h->got.offset;
2240
7afd84dc 2241 if (base_got == NULL)
cbe950e9
L		 2242 abort ();
2243
7afd84dc 2244 if (off == (bfd_vma) -1)
cbe950e9 2245 {
7afd84dc
L		 2246 /* We can't use h->got.offset here to save state, or
2247 even just remember the offset, as finish_dynamic_symbol
2248 would use that as offset into .got. */
6bbec505 2249
233cc9c1
L		 2250 if (h->plt.offset == (bfd_vma) -1)
2251 abort ();
2252
6de2ae4a 2253 if (htab->elf.splt != NULL)
7afd84dc 2254 {
f604c2a2 2255 plt_index = (h->plt.offset / plt_entry_size
765e526c 2256 - htab->plt.has_plt0);
7afd84dc 2257 off = (plt_index + 3) * 4;
6de2ae4a 2258 base_got = htab->elf.sgotplt;
7afd84dc 2259 }
cbe950e9
L		 2260 else
2261 {
25e762b9 2262 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 2263 off = plt_index * 4;
6de2ae4a 2264 base_got = htab->elf.igotplt;
7afd84dc
L		 2265 }
2266
2267 if (h->dynindx == -1
2268 || h->forced_local
2269 || info->symbolic)
2270 {
2271 /* This references the local defitionion. We must
2272 initialize this entry in the global offset table.
2273 Since the offset must always be a multiple of 8,
2274 we use the least significant bit to record
2275 whether we have initialized it already.
2276
2277 When doing a dynamic link, we create a .rela.got
2278 relocation entry to initialize the value. This
2279 is done in the finish_dynamic_symbol routine. */
2280 if ((off & 1) != 0)
2281 off &= ~1;
2282 else
2283 {
2284 bfd_put_32 (output_bfd, relocation,
2285 base_got->contents + off);
2286 h->got.offset |= 1;
2287 }
cbe950e9 2288 }
cbe950e9 2289
7afd84dc 2290 relocation = off;
7afd84dc
L		 2291 }
2292 else
ca8c86ef
L		 2293 relocation = (base_got->output_section->vma
2294 + base_got->output_offset + off
2295 - gotplt->output_section->vma
2296 - gotplt->output_offset);
2297
2a568401
L		 2298 if (rel->r_offset > 1
2299 && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5
2300 && *(contents + rel->r_offset - 2) != 0x8d)
712ec279
L		 2301 {
2302 if (bfd_link_pic (info))
2303 goto disallow_got32;
2304
2305 /* Add the GOT base if there is no base register. */
2306 relocation += (gotplt->output_section->vma
2307 + gotplt->output_offset);
2308 }
2309 else if (htab->elf.splt == NULL)
2310 {
2311 /* Adjust for static executables. */
2312 relocation += gotplt->output_offset;
2313 }
0018b0a3 2314
cbe950e9 2315 goto do_relocation;
233cc9c1
L		 2316 }
2317
2318 if (h->plt.offset == (bfd_vma) -1)
2319 {
2320 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2321 if (r_type == R_386_32
2322 && (input_section->flags & SEC_CODE) == 0)
2323 goto do_ifunc_pointer;
2324 goto bad_ifunc_reloc;
2325 }
2326
ee2fdd6f
L		 2327 relocation = (resolved_plt->output_section->vma
2328 + resolved_plt->output_offset + plt_offset);
233cc9c1
L		 2329
2330 switch (r_type)
2331 {
2332 default:
2333bad_ifunc_reloc:
2334 if (h->root.root.string)
2335 name = h->root.root.string;
2336 else
2337 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2338 NULL);
4eca0228 2339 _bfd_error_handler
695344c0 2340 /* xgettext:c-format */
233cc9c1
L		 2341 (_("%B: relocation %s against STT_GNU_IFUNC "
2342 "symbol `%s' isn't supported"), input_bfd,
2343 howto->name, name);
2344 bfd_set_error (bfd_error_bad_value);
2345 return FALSE;
2346
2347 case R_386_32:
2348 /* Generate dynamic relcoation only when there is a
2349 non-GOT reference in a shared object. */
2350 if ((bfd_link_pic (info) && h->non_got_ref)
2351 || h->plt.offset == (bfd_vma) -1)
2352 {
2353 Elf_Internal_Rela outrel;
2354 asection *sreloc;
2355 bfd_vma offset;
2356
2357do_ifunc_pointer:
2358 /* Need a dynamic relocation to get the real function
2359 adddress. */
2360 offset = _bfd_elf_section_offset (output_bfd,
2361 info,
2362 input_section,
2363 rel->r_offset);
2364 if (offset == (bfd_vma) -1
2365 || offset == (bfd_vma) -2)
2366 abort ();
2367
2368 outrel.r_offset = (input_section->output_section->vma
2369 + input_section->output_offset
2370 + offset);
2371
cf1070f1 2372 if (POINTER_LOCAL_IFUNC_P (info, h))
233cc9c1 2373 {
6322e5c5
L		 2374 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
2375 h->root.root.string,
2376 h->root.u.def.section->owner);
2377
233cc9c1
L		 2378 /* This symbol is resolved locally. */
2379 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
2380 bfd_put_32 (output_bfd,
2381 (h->root.u.def.value
2382 + h->root.u.def.section->output_section->vma
2383 + h->root.u.def.section->output_offset),
2384 contents + offset);
2385 }
2386 else
2387 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2388
2389 /* Dynamic relocations are stored in
2390 1. .rel.ifunc section in PIC object.
2391 2. .rel.got section in dynamic executable.
2392 3. .rel.iplt section in static executable. */
2393 if (bfd_link_pic (info))
2394 sreloc = htab->elf.irelifunc;
2395 else if (htab->elf.splt != NULL)
2396 sreloc = htab->elf.srelgot;
2397 else
2398 sreloc = htab->elf.irelplt;
2399 elf_append_rel (output_bfd, sreloc, &outrel);
2400
2401 /* If this reloc is against an external symbol, we
2402 do not want to fiddle with the addend. Otherwise,
2403 we need to include the symbol value so that it
2404 becomes an addend for the dynamic reloc. For an
2405 internal symbol, we have updated addend. */
2406 continue;
2407 }
2408 /* FALLTHROUGH */
2409 case R_386_PC32:
2410 case R_386_PLT32:
2411 goto do_relocation;
cbe950e9
L		 2412
2413 case R_386_GOTOFF:
2414 relocation -= (gotplt->output_section->vma
2415 + gotplt->output_offset);
2416 goto do_relocation;
2417 }
2418 }
2419
aec6b87e 2420 resolved_to_zero = (eh != NULL
c5bce5c6 2421 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2422
252b5132
RH		 2423 switch (r_type)
2424 {
02a86693
L		 2425 case R_386_GOT32X:
2426 /* Avoid optimizing _DYNAMIC since ld.so may use its
2427 link-time address. */
2428 if (h == htab->elf.hdynamic)
2429 goto r_386_got32;
2430
2431 if (bfd_link_pic (info))
2432 {
2433 /* It is OK to convert mov to lea and convert indirect
2434 branch to direct branch. It is OK to convert adc,
2435 add, and, cmp, or, sbb, sub, test, xor only when PIC
2436 is false. */
02e2aef8
L		 2437 unsigned int opcode, addend;
2438 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
2439 if (addend != 0)
2440 goto r_386_got32;
2441 opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
02a86693
L		 2442 if (opcode != 0x8b && opcode != 0xff)
2443 goto r_386_got32;
2444 }
2445
2446 /* Resolve "mov GOT[(%reg)], %reg",
2447 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
2448 and "binop foo@GOT[(%reg)], %reg". */
2449 if (h == NULL
2450 || (h->plt.offset == (bfd_vma) -1
2451 && h->got.offset == (bfd_vma) -1)
2452 || htab->elf.sgotplt == NULL)
2453 abort ();
2454
2455 offplt = (htab->elf.sgotplt->output_section->vma
2456 + htab->elf.sgotplt->output_offset);
2457
2458 /* It is relative to .got.plt section. */
2459 if (h->got.offset != (bfd_vma) -1)
32875eb1
L		 2460 /* Use GOT entry. Mask off the least significant bit in
2461 GOT offset which may be set by R_386_GOT32 processing
2462 below. */
02a86693
L		 2463 relocation = (htab->elf.sgot->output_section->vma
2464 + htab->elf.sgot->output_offset
32875eb1 2465 + (h->got.offset & ~1) - offplt);
02a86693
L		 2466 else
2467 /* Use GOTPLT entry. */
f604c2a2 2468 relocation = (h->plt.offset / plt_entry_size
765e526c 2469 - htab->plt.has_plt0 + 3) * 4;
02a86693
L		 2470
2471 if (!bfd_link_pic (info))
2472 {
2473 /* If not PIC, add the .got.plt section address for
a3718e9e 2474 baseless addressing. */
02a86693 2475 unsigned int modrm;
02e2aef8 2476 modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
02a86693
L		 2477 if ((modrm & 0xc7) == 0x5)
2478 relocation += offplt;
2479 }
2480
2481 unresolved_reloc = FALSE;
2482 break;
2483
252b5132 2484 case R_386_GOT32:
02a86693 2485r_386_got32:
252b5132
RH		 2486 /* Relocation is to the entry for this symbol in the global
2487 offset table. */
6de2ae4a 2488 if (htab->elf.sgot == NULL)
ffb2e45b 2489 abort ();
252b5132 2490
e133d005 2491 relative_reloc = FALSE;
252b5132
RH		 2492 if (h != NULL)
2493 {
252b5132 2494 off = h->got.offset;
2eba97c2 2495 if (RESOLVED_LOCALLY_P (info, h, htab))
252b5132 2496 {
2eba97c2
L		 2497 /* We must initialize this entry in the global offset
2498 table. Since the offset must always be a multiple
2499 of 4, we use the least significant bit to record
2500 whether we have initialized it already.
252b5132
RH		 2501
2502 When doing a dynamic link, we create a .rel.got
2503 relocation entry to initialize the value. This
2504 is done in the finish_dynamic_symbol routine. */
2505 if ((off & 1) != 0)
2506 off &= ~1;
2507 else
2508 {
2509 bfd_put_32 (output_bfd, relocation,
6de2ae4a 2510 htab->elf.sgot->contents + off);
252b5132 2511 h->got.offset |= 1;
e133d005 2512
f70656b2 2513 if (GENERATE_RELATIVE_RELOC_P (info, h))
e133d005
L		 2514 {
2515 /* PR ld/21402: If this symbol isn't dynamic
0dc9a308 2516 in PIC, generate R_386_RELATIVE here. */
e133d005
L		 2517 eh->no_finish_dynamic_symbol = 1;
2518 relative_reloc = TRUE;
2519 }
252b5132
RH		 2520 }
2521 }
8c694914 2522 else
b34976b6 2523 unresolved_reloc = FALSE;
252b5132
RH		 2524 }
2525 else
2526 {
ffb2e45b
AM		 2527 if (local_got_offsets == NULL)
2528 abort ();
252b5132
RH		 2529
2530 off = local_got_offsets[r_symndx];
2531
2532 /* The offset must always be a multiple of 4. We use
83be169b
AM		 2533 the least significant bit to record whether we have
2534 already generated the necessary reloc. */
252b5132
RH		 2535 if ((off & 1) != 0)
2536 off &= ~1;
2537 else
2538 {
6725bdbf 2539 bfd_put_32 (output_bfd, relocation,
6de2ae4a 2540 htab->elf.sgot->contents + off);
e133d005 2541 local_got_offsets[r_symndx] |= 1;
252b5132 2542
0e1862bb 2543 if (bfd_link_pic (info))
e133d005 2544 relative_reloc = TRUE;
252b5132 2545 }
252b5132
RH		 2546 }
2547
e133d005
L		 2548 if (relative_reloc)
2549 {
2550 asection *s;
2551 Elf_Internal_Rela outrel;
2552
2553 s = htab->elf.srelgot;
2554 if (s == NULL)
2555 abort ();
2556
2557 outrel.r_offset = (htab->elf.sgot->output_section->vma
2558 + htab->elf.sgot->output_offset
2559 + off);
2560 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2561 elf_append_rel (output_bfd, s, &outrel);
2562 }
2563
ffb2e45b
AM		 2564 if (off >= (bfd_vma) -2)
2565 abort ();
2566
74d7f0aa
L		 2567 relocation = (htab->elf.sgot->output_section->vma
2568 + htab->elf.sgot->output_offset + off);
2a568401
L		 2569 if (rel->r_offset > 1
2570 && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5
2571 && *(contents + rel->r_offset - 2) != 0x8d)
74d7f0aa
L		 2572 {
2573 if (bfd_link_pic (info))
2574 {
2575 /* For PIC, disallow R_386_GOT32 without a base
2a568401
L		 2576 register, except for "lea foo@GOT, %reg", since
2577 we don't know what the GOT base is. */
74d7f0aa
L		 2578 const char *name;
2579
712ec279 2580disallow_got32:
a5def14f 2581 if (h == NULL || h->root.root.string == NULL)
74d7f0aa
L		 2582 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2583 NULL);
2584 else
2585 name = h->root.root.string;
2586
4eca0228 2587 _bfd_error_handler
695344c0 2588 /* xgettext:c-format */
63a5468a
AM		 2589 (_("%B: direct GOT relocation %s against `%s'"
2590 " without base register can not be used"
2591 " when making a shared object"),
712ec279 2592 input_bfd, howto->name, name);
74d7f0aa
L		 2593 bfd_set_error (bfd_error_bad_value);
2594 return FALSE;
2595 }
2596 }
2597 else
2598 {
2599 /* Subtract the .got.plt section address only with a base
2600 register. */
2601 relocation -= (htab->elf.sgotplt->output_section->vma
2602 + htab->elf.sgotplt->output_offset);
2603 }
2604
252b5132
RH		 2605 break;
2606
2607 case R_386_GOTOFF:
2608 /* Relocation is relative to the start of the global offset
2609 table. */
2610
3d949995
L		 2611 /* Check to make sure it isn't a protected function or data
2612 symbol for shared library since it may not be local when
2613 used as function address or with copy relocation. We also
e3c0e327 2614 need to make sure that a symbol is referenced locally. */
0e1862bb 2615 if (!bfd_link_executable (info) && h)
90f487df 2616 {
41bed6dd
L		 2617 if (!h->def_regular)
2618 {
2619 const char *v;
2620
2621 switch (ELF_ST_VISIBILITY (h->other))
2622 {
2623 case STV_HIDDEN:
2624 v = _("hidden symbol");
2625 break;
2626 case STV_INTERNAL:
2627 v = _("internal symbol");
2628 break;
2629 case STV_PROTECTED:
2630 v = _("protected symbol");
2631 break;
2632 default:
2633 v = _("symbol");
2634 break;
2635 }
2636
4eca0228 2637 _bfd_error_handler
695344c0 2638 /* xgettext:c-format */
63a5468a
AM		 2639 (_("%B: relocation R_386_GOTOFF against undefined %s"
2640 " `%s' can not be used when making a shared object"),
41bed6dd
L		 2641 input_bfd, v, h->root.root.string);
2642 bfd_set_error (bfd_error_bad_value);
2643 return FALSE;
2644 }
6999821f 2645 else if (!SYMBOL_REFERENCES_LOCAL_P (info, h)
3d949995
L		 2646 && (h->type == STT_FUNC
2647 || h->type == STT_OBJECT)
41bed6dd
L		 2648 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2649 {
4eca0228 2650 _bfd_error_handler
695344c0 2651 /* xgettext:c-format */
63a5468a
AM		 2652 (_("%B: relocation R_386_GOTOFF against protected %s"
2653 " `%s' can not be used when making a shared object"),
3d949995
L		 2654 input_bfd,
2655 h->type == STT_FUNC ? "function" : "data",
2656 h->root.root.string);
41bed6dd
L		 2657 bfd_set_error (bfd_error_bad_value);
2658 return FALSE;
2659 }
90f487df
L		 2660 }
2661
8c37241b
JJ		 2662 /* Note that sgot is not involved in this
2663 calculation. We always want the start of .got.plt. If we
2664 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 2665 permitted by the ABI, we might have to change this
2666 calculation. */
6de2ae4a
L		 2667 relocation -= htab->elf.sgotplt->output_section->vma
2668 + htab->elf.sgotplt->output_offset;
252b5132
RH		 2669 break;
2670
2671 case R_386_GOTPC:
2672 /* Use global offset table as symbol value. */
6de2ae4a
L		 2673 relocation = htab->elf.sgotplt->output_section->vma
2674 + htab->elf.sgotplt->output_offset;
b34976b6 2675 unresolved_reloc = FALSE;
252b5132
RH		 2676 break;
2677
2678 case R_386_PLT32:
2679 /* Relocation is to the entry for this symbol in the
2680 procedure linkage table. */
2681
dd5724d5 2682 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 2683 without using the procedure linkage table. */
252b5132
RH		 2684 if (h == NULL)
2685 break;
2686
dd7e64d4
L		 2687 if ((h->plt.offset == (bfd_vma) -1
2688 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 2689 || htab->elf.splt == NULL)
252b5132
RH		 2690 {
2691 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 2692 happens when statically linking PIC code, or when
2693 using -Bsymbolic. */
252b5132
RH		 2694 break;
2695 }
2696
dd7e64d4
L		 2697 if (h->plt.offset != (bfd_vma) -1)
2698 {
ee2fdd6f
L		 2699 if (htab->plt_second != NULL)
2700 {
2701 resolved_plt = htab->plt_second;
2702 plt_offset = eh->plt_second.offset;
2703 }
2704 else
2705 {
2706 resolved_plt = htab->elf.splt;
2707 plt_offset = h->plt.offset;
2708 }
dd7e64d4
L		 2709 }
2710 else
2711 {
2712 resolved_plt = htab->plt_got;
2713 plt_offset = eh->plt_got.offset;
2714 }
2715
2716 relocation = (resolved_plt->output_section->vma
2717 + resolved_plt->output_offset
2718 + plt_offset);
b34976b6 2719 unresolved_reloc = FALSE;
252b5132
RH		 2720 break;
2721
1788fc08 2722 case R_386_SIZE32:
1788fc08
L		 2723 /* Set to symbol size. */
2724 relocation = st_size;
2725 /* Fall through. */
2726
252b5132
RH		 2727 case R_386_32:
2728 case R_386_PC32:
3348747a
NS		 2729 if ((input_section->flags & SEC_ALLOC) == 0
2730 || is_vxworks_tls)
ec338859
AM		 2731 break;
2732
aebcc8ff
L		 2733 if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
2734 FALSE, resolved_to_zero,
2735 (r_type == R_386_PC32)))
252b5132 2736 {
947216bf 2737 Elf_Internal_Rela outrel;
b34976b6 2738 bfd_boolean skip, relocate;
0c715baa 2739 asection *sreloc;
252b5132
RH		 2740
2741 /* When generating a shared object, these relocations
2742 are copied into the output file to be resolved at run
2743 time. */
2744
b34976b6
AM		 2745 skip = FALSE;
2746 relocate = FALSE;
252b5132 2747
c629eae0
JJ		 2748 outrel.r_offset =
2749 _bfd_elf_section_offset (output_bfd, info, input_section,
2750 rel->r_offset);
2751 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2752 skip = TRUE;
0bb2d96a 2753 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2754 skip = TRUE, relocate = TRUE;
252b5132
RH		 2755 outrel.r_offset += (input_section->output_section->vma
2756 + input_section->output_offset);
2757
2758 if (skip)
0bb2d96a 2759 memset (&outrel, 0, sizeof outrel);
e74399c4 2760 else if (COPY_INPUT_RELOC_P (info, h, r_type))
0bb2d96a 2761 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2762 else
2763 {
5a15f56f 2764 /* This symbol is local, or marked to become local. */
b34976b6 2765 relocate = TRUE;
5a15f56f 2766 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 2767 }
2768
cbe950e9 2769 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 2770
62d78908
L		 2771 if (sreloc == NULL || sreloc->contents == NULL)
2772 {
2773 r = bfd_reloc_notsupported;
2774 goto check_relocation_error;
2775 }
0c715baa 2776
59d6ffb2 2777 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 2778
2779 /* If this reloc is against an external symbol, we do
2780 not want to fiddle with the addend. Otherwise, we
2781 need to include the symbol value so that it becomes
2782 an addend for the dynamic reloc. */
0f88be7a 2783 if (! relocate)
252b5132
RH		 2784 continue;
2785 }
252b5132
RH		 2786 break;
2787
37e55690 2788 case R_386_TLS_IE:
0e1862bb 2789 if (!bfd_link_executable (info))
37e55690 2790 {
947216bf 2791 Elf_Internal_Rela outrel;
37e55690 2792 asection *sreloc;
37e55690
JJ		 2793
2794 outrel.r_offset = rel->r_offset
2795 + input_section->output_section->vma
2796 + input_section->output_offset;
2797 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2798 sreloc = elf_section_data (input_section)->sreloc;
2799 if (sreloc == NULL)
2800 abort ();
59d6ffb2 2801 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 2802 }
2803 /* Fall through */
2804
13ae64f3 2805 case R_386_TLS_GD:
67a4f2b7
AO		 2806 case R_386_TLS_GOTDESC:
2807 case R_386_TLS_DESC_CALL:
13ae64f3 2808 case R_386_TLS_IE_32:
37e55690 2809 case R_386_TLS_GOTIE:
13ae64f3
JJ		 2810 tls_type = GOT_UNKNOWN;
2811 if (h == NULL && local_got_offsets)
0afcef53 2812 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
13ae64f3 2813 else if (h != NULL)
0afcef53 2814 tls_type = elf_x86_hash_entry(h)->tls_type;
37e55690
JJ		 2815 if (tls_type == GOT_TLS_IE)
2816 tls_type = GOT_TLS_IE_NEG;
142411ca 2817
419414ea 2818 r_type_tls = r_type;
142411ca
L		 2819 if (! elf_i386_tls_transition (info, input_bfd,
2820 input_section, contents,
2821 symtab_hdr, sym_hashes,
419414ea 2822 &r_type_tls, tls_type, rel,
bedfd056 2823 relend, h, r_symndx, TRUE))
142411ca 2824 return FALSE;
13ae64f3 2825
419414ea 2826 if (r_type_tls == R_386_TLS_LE_32)
13ae64f3 2827 {
82e51918 2828 BFD_ASSERT (! unresolved_reloc);
419414ea 2829 if (r_type == R_386_TLS_GD)
13ae64f3 2830 {
142411ca 2831 unsigned int type;
13ae64f3
JJ		 2832 bfd_vma roff;
2833
2834 /* GD->LE transition. */
6eaa7fb5 2835 type = *(contents + rel->r_offset - 2);
13ae64f3
JJ		 2836 if (type == 0x04)
2837 {
6eaa7fb5
L		 2838 /* Change
2839 leal foo@tlsgd(,%ebx,1), %eax
2840 call ___tls_get_addr@PLT
2841 into:
2842 movl %gs:0, %eax
2843 subl $foo@tpoff, %eax
13ae64f3 2844 (6 byte form of subl). */
142411ca 2845 roff = rel->r_offset + 5;
13ae64f3
JJ		 2846 }
2847 else
2848 {
6eaa7fb5
L		 2849 /* Change
2850 leal foo@tlsgd(%ebx), %eax
2851 call ___tls_get_addr@PLT
2852 nop
2853 or
2854 leal foo@tlsgd(%reg), %eax
2855 call *___tls_get_addr@GOT(%reg)
2856 which may be converted to
2857 addr32 call ___tls_get_addr
2858 into:
2859 movl %gs:0, %eax; subl $foo@tpoff, %eax
142411ca 2860 (6 byte form of subl). */
142411ca 2861 roff = rel->r_offset + 6;
13ae64f3 2862 }
6eaa7fb5
L		 2863 memcpy (contents + roff - 8,
2864 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
eb4ff4d6 2865 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 2866 contents + roff);
6eaa7fb5 2867 /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */
13ae64f3 2868 rel++;
60f2e42e 2869 wrel++;
13ae64f3
JJ		 2870 continue;
2871 }
419414ea 2872 else if (r_type == R_386_TLS_GOTDESC)
67a4f2b7
AO		 2873 {
2874 /* GDesc -> LE transition.
2875 It's originally something like:
2876 leal x@tlsdesc(%ebx), %eax
2877
2878 leal x@ntpoff, %eax
2879
2880 Registers other than %eax may be set up here. */
2881
142411ca 2882 unsigned int val;
67a4f2b7
AO		 2883 bfd_vma roff;
2884
67a4f2b7 2885 roff = rel->r_offset;
67a4f2b7 2886 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 2887
2888 /* Now modify the instruction as appropriate. */
2889 /* aoliva FIXME: remove the above and xor the byte
2890 below with 0x86. */
2891 bfd_put_8 (output_bfd, val ^ 0x86,
2892 contents + roff - 1);
eb4ff4d6 2893 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 2894 contents + roff);
2895 continue;
2896 }
419414ea 2897 else if (r_type == R_386_TLS_DESC_CALL)
67a4f2b7
AO		 2898 {
2899 /* GDesc -> LE transition.
2900 It's originally:
2901 call *(%eax)
2902 Turn it into:
142411ca 2903 xchg %ax,%ax */
67a4f2b7 2904
67a4f2b7 2905 bfd_vma roff;
6bbec505 2906
67a4f2b7 2907 roff = rel->r_offset;
10efb593 2908 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 2909 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
2910 continue;
2911 }
419414ea 2912 else if (r_type == R_386_TLS_IE)
13ae64f3 2913 {
142411ca 2914 unsigned int val;
13ae64f3
JJ		 2915
2916 /* IE->LE transition:
37e55690
JJ		 2917 Originally it can be one of:
2918 movl foo, %eax
2919 movl foo, %reg
2920 addl foo, %reg
2921 We change it into:
2922 movl $foo, %eax
2923 movl $foo, %reg
2924 addl $foo, %reg. */
37e55690 2925 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 2926 if (val == 0xa1)
2927 {
2928 /* movl foo, %eax. */
55fd94b0
AM		 2929 bfd_put_8 (output_bfd, 0xb8,
2930 contents + rel->r_offset - 1);
37e55690 2931 }
299bf759 2932 else
37e55690 2933 {
142411ca
L		 2934 unsigned int type;
2935
55fd94b0
AM		 2936 type = bfd_get_8 (input_bfd,
2937 contents + rel->r_offset - 2);
299bf759 2938 switch (type)
26e41594 2939 {
299bf759
L		 2940 case 0x8b:
2941 /* movl */
299bf759
L		 2942 bfd_put_8 (output_bfd, 0xc7,
2943 contents + rel->r_offset - 2);
2944 bfd_put_8 (output_bfd,
2945 0xc0 | ((val >> 3) & 7),
2946 contents + rel->r_offset - 1);
2947 break;
2948 case 0x03:
2949 /* addl */
299bf759
L		 2950 bfd_put_8 (output_bfd, 0x81,
2951 contents + rel->r_offset - 2);
2952 bfd_put_8 (output_bfd,
2953 0xc0 | ((val >> 3) & 7),
2954 contents + rel->r_offset - 1);
2955 break;
2956 default:
2957 BFD_FAIL ();
2958 break;
26e41594 2959 }
37e55690 2960 }
eb4ff4d6 2961 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 2962 contents + rel->r_offset);
2963 continue;
2964 }
2965 else
2966 {
2967 unsigned int val, type;
2968
2969 /* {IE_32,GOTIE}->LE transition:
2970 Originally it can be one of:
13ae64f3 2971 subl foo(%reg1), %reg2
13ae64f3 2972 movl foo(%reg1), %reg2
37e55690 2973 addl foo(%reg1), %reg2
13ae64f3
JJ		 2974 We change it into:
2975 subl $foo, %reg2
37e55690
JJ		 2976 movl $foo, %reg2 (6 byte form)
2977 addl $foo, %reg2. */
13ae64f3
JJ		 2978 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2979 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 2980 if (type == 0x8b)
2981 {
2982 /* movl */
13ae64f3
JJ		 2983 bfd_put_8 (output_bfd, 0xc7,
2984 contents + rel->r_offset - 2);
2985 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2986 contents + rel->r_offset - 1);
2987 }
2988 else if (type == 0x2b)
2989 {
2990 /* subl */
13ae64f3
JJ		 2991 bfd_put_8 (output_bfd, 0x81,
2992 contents + rel->r_offset - 2);
2993 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
2994 contents + rel->r_offset - 1);
2995 }
37e55690
JJ		 2996 else if (type == 0x03)
2997 {
2998 /* addl */
2999 bfd_put_8 (output_bfd, 0x81,
3000 contents + rel->r_offset - 2);
3001 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3002 contents + rel->r_offset - 1);
3003 }
13ae64f3
JJ		 3004 else
3005 BFD_FAIL ();
419414ea 3006 if (r_type == R_386_TLS_GOTIE)
eb4ff4d6 3007 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3008 contents + rel->r_offset);
3009 else
eb4ff4d6 3010 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3011 contents + rel->r_offset);
13ae64f3
JJ		 3012 continue;
3013 }
3014 }
3015
6de2ae4a 3016 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3017 abort ();
3018
3019 if (h != NULL)
67a4f2b7
AO		 3020 {
3021 off = h->got.offset;
0afcef53 3022 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 3023 }
13ae64f3
JJ		 3024 else
3025 {
3026 if (local_got_offsets == NULL)
3027 abort ();
3028
3029 off = local_got_offsets[r_symndx];
67a4f2b7 3030 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 3031 }
3032
3033 if ((off & 1) != 0)
3034 off &= ~1;
26e41594 3035 else
13ae64f3 3036 {
947216bf 3037 Elf_Internal_Rela outrel;
91d6fa6a 3038 int dr_type;
67a4f2b7 3039 asection *sreloc;
13ae64f3 3040
6de2ae4a 3041 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 3042 abort ();
3043
67a4f2b7
AO		 3044 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3045
3046 if (GOT_TLS_GDESC_P (tls_type))
3047 {
59d6ffb2 3048 bfd_byte *loc;
67a4f2b7
AO		 3049 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3050 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 3051 <= htab->elf.sgotplt->size);
3052 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3053 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3054 + offplt
3055 + htab->sgotplt_jump_table_size);
6de2ae4a 3056 sreloc = htab->elf.srelplt;
67a4f2b7 3057 loc = sreloc->contents;
765e526c 3058 loc += (htab->next_tls_desc_index++
5ae0bfb6 3059 * sizeof (Elf32_External_Rel));
67a4f2b7 3060 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 3061 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 3062 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3063 if (indx == 0)
3064 {
3065 BFD_ASSERT (! unresolved_reloc);
3066 bfd_put_32 (output_bfd,
0afcef53 3067 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3068 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3069 + htab->sgotplt_jump_table_size + 4);
3070 }
3071 else
3072 {
3073 bfd_put_32 (output_bfd, 0,
6de2ae4a 3074 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3075 + htab->sgotplt_jump_table_size + 4);
3076 }
3077 }
3078
6de2ae4a 3079 sreloc = htab->elf.srelgot;
67a4f2b7 3080
6de2ae4a
L		 3081 outrel.r_offset = (htab->elf.sgot->output_section->vma
3082 + htab->elf.sgot->output_offset + off);
13ae64f3 3083
67a4f2b7 3084 if (GOT_TLS_GD_P (tls_type))
13ae64f3 3085 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 3086 else if (GOT_TLS_GDESC_P (tls_type))
3087 goto dr_done;
37e55690
JJ		 3088 else if (tls_type == GOT_TLS_IE_POS)
3089 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 3090 else
3091 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 3092
37e55690 3093 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6 3094 bfd_put_32 (output_bfd,
0afcef53 3095 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3096 htab->elf.sgot->contents + off);
37e55690 3097 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 3098 bfd_put_32 (output_bfd,
0afcef53 3099 _bfd_x86_elf_dtpoff_base (info) - relocation,
6de2ae4a 3100 htab->elf.sgot->contents + off);
67a4f2b7 3101 else if (dr_type != R_386_TLS_DESC)
c366c25e 3102 bfd_put_32 (output_bfd, 0,
6de2ae4a 3103 htab->elf.sgot->contents + off);
13ae64f3 3104 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 3105
59d6ffb2 3106 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 3107
67a4f2b7 3108 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 3109 {
3110 if (indx == 0)
3111 {
82e51918 3112 BFD_ASSERT (! unresolved_reloc);
13ae64f3 3113 bfd_put_32 (output_bfd,
0afcef53 3114 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3115 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3116 }
3117 else
3118 {
3119 bfd_put_32 (output_bfd, 0,
6de2ae4a 3120 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3121 outrel.r_info = ELF32_R_INFO (indx,
3122 R_386_TLS_DTPOFF32);
3123 outrel.r_offset += 4;
59d6ffb2 3124 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 3125 }
3126 }
37e55690
JJ		 3127 else if (tls_type == GOT_TLS_IE_BOTH)
3128 {
3129 bfd_put_32 (output_bfd,
eb4ff4d6 3130 (indx == 0
0afcef53 3131 ? relocation - _bfd_x86_elf_dtpoff_base (info)
eb4ff4d6 3132 : 0),
6de2ae4a 3133 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 3134 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3135 outrel.r_offset += 4;
59d6ffb2 3136 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 3137 }
13ae64f3 3138
67a4f2b7 3139 dr_done:
13ae64f3
JJ		 3140 if (h != NULL)
3141 h->got.offset |= 1;
3142 else
3143 local_got_offsets[r_symndx] |= 1;
3144 }
3145
67a4f2b7
AO		 3146 if (off >= (bfd_vma) -2
3147 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 3148 abort ();
419414ea
L		 3149 if (r_type_tls == R_386_TLS_GOTDESC
3150 || r_type_tls == R_386_TLS_DESC_CALL)
67a4f2b7
AO		 3151 {
3152 relocation = htab->sgotplt_jump_table_size + offplt;
3153 unresolved_reloc = FALSE;
3154 }
419414ea 3155 else if (r_type_tls == r_type)
13ae64f3 3156 {
6de2ae4a
L		 3157 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
3158 + htab->elf.sgotplt->output_offset;
3159 relocation = htab->elf.sgot->output_section->vma
3160 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 3161 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3162 && tls_type == GOT_TLS_IE_BOTH)
3163 relocation += 4;
3164 if (r_type == R_386_TLS_IE)
8c37241b 3165 relocation += g_o_t;
b34976b6 3166 unresolved_reloc = FALSE;
13ae64f3 3167 }
419414ea 3168 else if (r_type == R_386_TLS_GD)
13ae64f3
JJ		 3169 {
3170 unsigned int val, type;
3171 bfd_vma roff;
3172
3173 /* GD->IE transition. */
6eaa7fb5
L		 3174 type = *(contents + rel->r_offset - 2);
3175 val = *(contents + rel->r_offset - 1);
13ae64f3
JJ		 3176 if (type == 0x04)
3177 {
6eaa7fb5
L		 3178 /* Change
3179 leal foo@tlsgd(,%ebx,1), %eax
3180 call ___tls_get_addr@PLT
3181 into:
3182 movl %gs:0, %eax
3183 subl $foo@gottpoff(%ebx), %eax. */
13ae64f3 3184 val >>= 3;
142411ca 3185 roff = rel->r_offset - 3;
13ae64f3
JJ		 3186 }
3187 else
3188 {
6eaa7fb5
L		 3189 /* Change
3190 leal foo@tlsgd(%ebx), %eax
3191 call ___tls_get_addr@PLT
3192 nop
3193 or
3194 leal foo@tlsgd(%reg), %eax
3195 call *___tls_get_addr@GOT(%reg)
3196 which may be converted to
3197 addr32 call ___tls_get_addr
3198 into:
3199 movl %gs:0, %eax;
3200 subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 3201 roff = rel->r_offset - 2;
3202 }
3203 memcpy (contents + roff,
3204 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3205 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 3206 /* If foo is used only with foo@gotntpoff(%reg) and
3207 foo@indntpoff, but not with foo@gottpoff(%reg), change
3208 subl $foo@gottpoff(%reg), %eax
3209 into:
3210 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 3211 if (tls_type == GOT_TLS_IE_POS)
3212 contents[roff + 6] = 0x03;
8c37241b 3213 bfd_put_32 (output_bfd,
6de2ae4a
L		 3214 htab->elf.sgot->output_section->vma
3215 + htab->elf.sgot->output_offset + off
3216 - htab->elf.sgotplt->output_section->vma
3217 - htab->elf.sgotplt->output_offset,
13ae64f3 3218 contents + roff + 8);
6eaa7fb5 3219 /* Skip R_386_PLT32 and R_386_GOT32X. */
13ae64f3 3220 rel++;
60f2e42e 3221 wrel++;
13ae64f3
JJ		 3222 continue;
3223 }
419414ea 3224 else if (r_type == R_386_TLS_GOTDESC)
67a4f2b7
AO		 3225 {
3226 /* GDesc -> IE transition.
3227 It's originally something like:
3228 leal x@tlsdesc(%ebx), %eax
3229
3230 Change it to:
142411ca 3231 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 3232 or:
3233 movl x@gottpoff(%ebx), %eax # before negl %eax
3234
3235 Registers other than %eax may be set up here. */
3236
67a4f2b7
AO		 3237 bfd_vma roff;
3238
3239 /* First, make sure it's a leal adding ebx to a 32-bit
3240 offset into any register, although it's probably
3241 almost always going to be eax. */
3242 roff = rel->r_offset;
67a4f2b7
AO		 3243
3244 /* Now modify the instruction as appropriate. */
3245 /* To turn a leal into a movl in the form we use it, it
3246 suffices to change the first byte from 0x8d to 0x8b.
3247 aoliva FIXME: should we decide to keep the leal, all
3248 we have to do is remove the statement below, and
3249 adjust the relaxation of R_386_TLS_DESC_CALL. */
3250 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3251
3252 if (tls_type == GOT_TLS_IE_BOTH)
3253 off += 4;
3254
3255 bfd_put_32 (output_bfd,
6de2ae4a
L		 3256 htab->elf.sgot->output_section->vma
3257 + htab->elf.sgot->output_offset + off
3258 - htab->elf.sgotplt->output_section->vma
3259 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 3260 contents + roff);
3261 continue;
3262 }
419414ea 3263 else if (r_type == R_386_TLS_DESC_CALL)
67a4f2b7
AO		 3264 {
3265 /* GDesc -> IE transition.
3266 It's originally:
3267 call *(%eax)
3268
3269 Change it to:
142411ca 3270 xchg %ax,%ax
67a4f2b7
AO		 3271 or
3272 negl %eax
3273 depending on how we transformed the TLS_GOTDESC above.
3274 */
3275
67a4f2b7
AO		 3276 bfd_vma roff;
3277
67a4f2b7 3278 roff = rel->r_offset;
67a4f2b7
AO		 3279
3280 /* Now modify the instruction as appropriate. */
3281 if (tls_type != GOT_TLS_IE_NEG)
3282 {
10efb593
L		 3283 /* xchg %ax,%ax */
3284 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3285 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3286 }
3287 else
3288 {
3289 /* negl %eax */
3290 bfd_put_8 (output_bfd, 0xf7, contents + roff);
3291 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3292 }
3293
3294 continue;
3295 }
3296 else
3297 BFD_ASSERT (FALSE);
13ae64f3
JJ		 3298 break;
3299
3300 case R_386_TLS_LDM:
142411ca
L		 3301 if (! elf_i386_tls_transition (info, input_bfd,
3302 input_section, contents,
3303 symtab_hdr, sym_hashes,
3304 &r_type, GOT_UNKNOWN, rel,
bedfd056 3305 relend, h, r_symndx, TRUE))
142411ca 3306 return FALSE;
13ae64f3 3307
142411ca
L		 3308 if (r_type != R_386_TLS_LDM)
3309 {
6eaa7fb5
L		 3310 /* LD->LE transition. Change
3311 leal foo@tlsldm(%ebx) %eax
3312 call ___tls_get_addr@PLT
3313 into:
3314 movl %gs:0, %eax
3315 nop
3316 leal 0(%esi,1), %esi
3317 or change
3318 leal foo@tlsldm(%reg) %eax
3319 call *___tls_get_addr@GOT(%reg)
3320 which may be converted to
3321 addr32 call ___tls_get_addr
3322 into:
3323 movl %gs:0, %eax
3324 leal 0(%esi), %esi */
142411ca 3325 BFD_ASSERT (r_type == R_386_TLS_LE_32);
6eaa7fb5
L		 3326 if (*(contents + rel->r_offset + 4) == 0xff
3327 || *(contents + rel->r_offset + 4) == 0x67)
3328 memcpy (contents + rel->r_offset - 2,
3329 "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12);
3330 else
3331 memcpy (contents + rel->r_offset - 2,
3332 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 3333 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 3334 rel++;
60f2e42e 3335 wrel++;
13ae64f3
JJ		 3336 continue;
3337 }
3338
6de2ae4a 3339 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3340 abort ();
3341
0afcef53 3342 off = htab->tls_ld_or_ldm_got.offset;
13ae64f3
JJ		 3343 if (off & 1)
3344 off &= ~1;
3345 else
3346 {
947216bf 3347 Elf_Internal_Rela outrel;
13ae64f3 3348
6de2ae4a 3349 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 3350 abort ();
3351
6de2ae4a
L		 3352 outrel.r_offset = (htab->elf.sgot->output_section->vma
3353 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 3354
3355 bfd_put_32 (output_bfd, 0,
6de2ae4a 3356 htab->elf.sgot->contents + off);
13ae64f3 3357 bfd_put_32 (output_bfd, 0,
6de2ae4a 3358 htab->elf.sgot->contents + off + 4);
13ae64f3 3359 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 3360 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
0afcef53 3361 htab->tls_ld_or_ldm_got.offset |= 1;
13ae64f3 3362 }
6de2ae4a
L		 3363 relocation = htab->elf.sgot->output_section->vma
3364 + htab->elf.sgot->output_offset + off
3365 - htab->elf.sgotplt->output_section->vma
3366 - htab->elf.sgotplt->output_offset;
b34976b6 3367 unresolved_reloc = FALSE;
13ae64f3
JJ		 3368 break;
3369
3370 case R_386_TLS_LDO_32:
0e1862bb
L		 3371 if (!bfd_link_executable (info)
3372 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3373 relocation -= _bfd_x86_elf_dtpoff_base (info);
13ae64f3
JJ		 3374 else
3375 /* When converting LDO to LE, we must negate. */
eb4ff4d6 3376 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 3377 break;
3378
3379 case R_386_TLS_LE_32:
13ae64f3 3380 case R_386_TLS_LE:
0e1862bb 3381 if (!bfd_link_executable (info))
37e55690 3382 {
947216bf 3383 Elf_Internal_Rela outrel;
37e55690 3384 asection *sreloc;
37e55690
JJ		 3385
3386 outrel.r_offset = rel->r_offset
3387 + input_section->output_section->vma
3388 + input_section->output_offset;
3389 if (h != NULL && h->dynindx != -1)
3390 indx = h->dynindx;
3391 else
3392 indx = 0;
3393 if (r_type == R_386_TLS_LE_32)
3394 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
3395 else
3396 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3397 sreloc = elf_section_data (input_section)->sreloc;
3398 if (sreloc == NULL)
3399 abort ();
59d6ffb2 3400 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3401 if (indx)
3402 continue;
3403 else if (r_type == R_386_TLS_LE_32)
0afcef53 3404 relocation = _bfd_x86_elf_dtpoff_base (info) - relocation;
37e55690 3405 else
0afcef53 3406 relocation -= _bfd_x86_elf_dtpoff_base (info);
37e55690
JJ		 3407 }
3408 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 3409 relocation = elf_i386_tpoff (info, relocation);
37e55690 3410 else
eb4ff4d6 3411 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 3412 break;
3413
252b5132
RH		 3414 default:
3415 break;
3416 }
3417
239e1f3a
AM		 3418 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3419 because such sections are not SEC_ALLOC and thus ld.so will
3420 not process them. */
8c694914 3421 if (unresolved_reloc
239e1f3a 3422 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3423 && h->def_dynamic)
3424 && _bfd_elf_section_offset (output_bfd, info, input_section,
3425 rel->r_offset) != (bfd_vma) -1)
6a30718d 3426 {
4eca0228 3427 _bfd_error_handler
695344c0 3428 /* xgettext:c-format */
d42c267e 3429 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3430 input_bfd,
3431 input_section,
d42c267e 3432 rel->r_offset,
843fe662 3433 howto->name,
6a30718d 3434 h->root.root.string);
b34976b6 3435 return FALSE;
6a30718d 3436 }
83be169b 3437
cbe950e9 3438do_relocation:
252b5132
RH		 3439 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3440 contents, rel->r_offset,
55fd94b0 3441 relocation, 0);
252b5132 3442
62d78908 3443check_relocation_error:
cf5c0c5b 3444 if (r != bfd_reloc_ok)
252b5132 3445 {
cf5c0c5b 3446 const char *name;
ffb2e45b 3447
cf5c0c5b
AM		 3448 if (h != NULL)
3449 name = h->root.root.string;
3450 else
3451 {
3452 name = bfd_elf_string_from_elf_section (input_bfd,
3453 symtab_hdr->sh_link,
3454 sym->st_name);
3455 if (name == NULL)
b34976b6 3456 return FALSE;
cf5c0c5b
AM		 3457 if (*name == '\0')
3458 name = bfd_section_name (input_bfd, sec);
3459 }
ffb2e45b 3460
cf5c0c5b 3461 if (r == bfd_reloc_overflow)
1a72702b
AM		 3462 (*info->callbacks->reloc_overflow)
3463 (info, (h ? &h->root : NULL), name, howto->name,
3464 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
cf5c0c5b
AM		 3465 else
3466 {
4eca0228 3467 _bfd_error_handler
695344c0 3468 /* xgettext:c-format */
d42c267e 3469 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
d003868e 3470 input_bfd, input_section,
d42c267e 3471 rel->r_offset, name, (int) r);
b34976b6 3472 return FALSE;
cf5c0c5b 3473 }
252b5132 3474 }
60f2e42e
L		 3475
3476 if (wrel != rel)
3477 *wrel = *rel;
3478 }
3479
3480 if (wrel != rel)
3481 {
3482 Elf_Internal_Shdr *rel_hdr;
3483 size_t deleted = rel - wrel;
3484
3485 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3486 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3487 if (rel_hdr->sh_size == 0)
3488 {
3489 /* It is too late to remove an empty reloc section. Leave
3490 one NONE reloc.
3491 ??? What is wrong with an empty section??? */
3492 rel_hdr->sh_size = rel_hdr->sh_entsize;
3493 deleted -= 1;
3494 }
3495 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3496 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3497 input_section->reloc_count -= deleted;
252b5132
RH		 3498 }
3499
b34976b6 3500 return TRUE;
252b5132
RH		 3501}
3502
3503/* Finish up dynamic symbol handling. We set the contents of various
3504 dynamic sections here. */
3505
b34976b6 3506static bfd_boolean
55fd94b0
AM		 3507elf_i386_finish_dynamic_symbol (bfd *output_bfd,
3508 struct bfd_link_info *info,
3509 struct elf_link_hash_entry *h,
3510 Elf_Internal_Sym *sym)
252b5132 3511{
0afcef53 3512 struct elf_x86_link_hash_table *htab;
25e762b9 3513 unsigned plt_entry_size;
0afcef53 3514 struct elf_x86_link_hash_entry *eh;
aec6b87e 3515 bfd_boolean local_undefweak;
ee2fdd6f 3516 bfd_boolean use_plt_second;
252b5132 3517
0afcef53 3518 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 3519 if (htab == NULL)
3520 return FALSE;
252b5132 3521
765e526c 3522 plt_entry_size = htab->plt.plt_entry_size;
25e762b9 3523
ee2fdd6f
L		 3524 /* Use the second PLT section only if there is .plt section. */
3525 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
3526
0afcef53 3527 eh = (struct elf_x86_link_hash_entry *) h;
e133d005
L		 3528 if (eh->no_finish_dynamic_symbol)
3529 abort ();
dd7e64d4 3530
aec6b87e
L		 3531 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3532 resolved undefined weak symbols in executable so that their
3533 references have value 0 at run-time. */
c5bce5c6 3534 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3535
252b5132
RH		 3536 if (h->plt.offset != (bfd_vma) -1)
3537 {
ee2fdd6f 3538 bfd_vma plt_index, plt_offset;
252b5132 3539 bfd_vma got_offset;
947216bf
AM		 3540 Elf_Internal_Rela rel;
3541 bfd_byte *loc;
ee2fdd6f 3542 asection *plt, *resolved_plt, *gotplt, *relplt;
cbe950e9
L		 3543
3544 /* When building a static executable, use .iplt, .igot.plt and
3545 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3546 if (htab->elf.splt != NULL)
cbe950e9 3547 {
6de2ae4a
L		 3548 plt = htab->elf.splt;
3549 gotplt = htab->elf.sgotplt;
3550 relplt = htab->elf.srelplt;
cbe950e9
L		 3551 }
3552 else
3553 {
6de2ae4a
L		 3554 plt = htab->elf.iplt;
3555 gotplt = htab->elf.igotplt;
3556 relplt = htab->elf.irelplt;
cbe950e9 3557 }
252b5132 3558
f3180fa9 3559 VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)
252b5132
RH		 3560
3561 /* Get the index in the procedure linkage table which
3562 corresponds to this symbol. This is the index of this symbol
3563 in all the symbols for which we are making plt entries. The
cbe950e9 3564 first entry in the procedure linkage table is reserved.
252b5132 3565
cbe950e9 3566 Get the offset into the .got table of the entry that
252b5132 3567 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 3568 The first three are reserved.
6bbec505 3569
cbe950e9
L		 3570 For static executables, we don't reserve anything. */
3571
6de2ae4a 3572 if (plt == htab->elf.splt)
cbe950e9 3573 {
f604c2a2 3574 got_offset = (h->plt.offset / plt_entry_size
765e526c 3575 - htab->plt.has_plt0);
e1f98742 3576 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 3577 }
3578 else
3579 {
e1f98742
L		 3580 got_offset = h->plt.offset / plt_entry_size;
3581 got_offset = got_offset * 4;
cbe950e9 3582 }
252b5132 3583
f604c2a2
L		 3584 /* Fill in the entry in the procedure linkage table and update
3585 the first slot. */
765e526c 3586 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
f604c2a2 3587 plt_entry_size);
ee2fdd6f
L		 3588
3589 if (use_plt_second)
3590 {
3591 const bfd_byte *plt_entry;
3592 if (bfd_link_pic (info))
765e526c 3593 plt_entry = htab->non_lazy_plt->pic_plt_entry;
ee2fdd6f 3594 else
765e526c 3595 plt_entry = htab->non_lazy_plt->plt_entry;
ee2fdd6f 3596 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c 3597 plt_entry, htab->non_lazy_plt->plt_entry_size);
ee2fdd6f
L		 3598
3599 resolved_plt = htab->plt_second;
3600 plt_offset = eh->plt_second.offset;
3601 }
3602 else
3603 {
3604 resolved_plt = plt;
3605 plt_offset = h->plt.offset;
3606 }
3607
0e1862bb 3608 if (! bfd_link_pic (info))
252b5132 3609 {
252b5132 3610 bfd_put_32 (output_bfd,
cbe950e9
L		 3611 (gotplt->output_section->vma
3612 + gotplt->output_offset
252b5132 3613 + got_offset),
ee2fdd6f 3614 resolved_plt->contents + plt_offset
765e526c 3615 + htab->plt.plt_got_offset);
eac338cf 3616
851b6fa1 3617 if (htab->target_os == is_vxworks)
eac338cf
PB		 3618 {
3619 int s, k, reloc_index;
3620
3621 /* Create the R_386_32 relocation referencing the GOT
3622 for this PLT entry. */
3623
3624 /* S: Current slot number (zero-based). */
765e526c
L		 3625 s = ((h->plt.offset - htab->plt.plt_entry_size)
3626 / htab->plt.plt_entry_size);
eac338cf 3627 /* K: Number of relocations for PLTResolve. */
0e1862bb 3628 if (bfd_link_pic (info))
eac338cf
PB		 3629 k = PLTRESOLVE_RELOCS_SHLIB;
3630 else
3631 k = PLTRESOLVE_RELOCS;
3632 /* Skip the PLTresolve relocations, and the relocations for
3633 the other PLT slots. */
3634 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
765e526c 3635 loc = (htab->srelplt2->contents + reloc_index
eac338cf
PB		 3636 * sizeof (Elf32_External_Rel));
3637
ee2fdd6f
L		 3638 rel.r_offset = (plt->output_section->vma
3639 + plt->output_offset
eac338cf 3640 + h->plt.offset + 2),
7325306f 3641 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3642 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3643
3644 /* Create the R_386_32 relocation referencing the beginning of
3645 the PLT for this GOT entry. */
6de2ae4a
L		 3646 rel.r_offset = (htab->elf.sgotplt->output_section->vma
3647 + htab->elf.sgotplt->output_offset
eac338cf 3648 + got_offset);
7325306f 3649 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 3650 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 3651 loc + sizeof (Elf32_External_Rel));
eac338cf 3652 }
252b5132
RH		 3653 }
3654 else
3655 {
252b5132 3656 bfd_put_32 (output_bfd, got_offset,
ee2fdd6f 3657 resolved_plt->contents + plt_offset
765e526c 3658 + htab->plt.plt_got_offset);
252b5132
RH		 3659 }
3660
aec6b87e
L		 3661 /* Fill in the entry in the global offset table. Leave the entry
3662 as zero for undefined weak symbol in PIE. No PLT relocation
3663 against undefined weak symbol in PIE. */
3664 if (!local_undefweak)
cbe950e9 3665 {
765e526c 3666 if (htab->plt.has_plt0)
f604c2a2
L		 3667 bfd_put_32 (output_bfd,
3668 (plt->output_section->vma
3669 + plt->output_offset
3670 + h->plt.offset
765e526c 3671 + htab->lazy_plt->plt_lazy_offset),
f604c2a2 3672 gotplt->contents + got_offset);
252b5132 3673
aec6b87e
L		 3674 /* Fill in the entry in the .rel.plt section. */
3675 rel.r_offset = (gotplt->output_section->vma
3676 + gotplt->output_offset
3677 + got_offset);
cf1070f1 3678 if (PLT_LOCAL_IFUNC_P (info, h))
aec6b87e 3679 {
6322e5c5
L		 3680 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
3681 h->root.root.string,
3682 h->root.u.def.section->owner);
3683
aec6b87e
L		 3684 /* If an STT_GNU_IFUNC symbol is locally defined, generate
3685 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
3686 in the .got.plt section. */
3687 bfd_put_32 (output_bfd,
3688 (h->root.u.def.value
3689 + h->root.u.def.section->output_section->vma
3690 + h->root.u.def.section->output_offset),
3691 gotplt->contents + got_offset);
3692 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3693 /* R_386_IRELATIVE comes last. */
3694 plt_index = htab->next_irelative_index--;
3695 }
3696 else
3697 {
3698 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
3699 plt_index = htab->next_jump_slot_index++;
3700 }
3701
3702 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
3703 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3704
f604c2a2
L		 3705 /* Don't fill the second and third slots in PLT entry for
3706 static executables nor without PLT0. */
765e526c 3707 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e
L		 3708 {
3709 bfd_put_32 (output_bfd,
3710 plt_index * sizeof (Elf32_External_Rel),
3711 plt->contents + h->plt.offset
765e526c 3712 + htab->lazy_plt->plt_reloc_offset);
f604c2a2
L		 3713 bfd_put_32 (output_bfd,
3714 - (h->plt.offset
765e526c 3715 + htab->lazy_plt->plt_plt_offset + 4),
f604c2a2 3716 (plt->contents + h->plt.offset
765e526c 3717 + htab->lazy_plt->plt_plt_offset));
aec6b87e 3718 }
e1f98742 3719 }
dd7e64d4
L		 3720 }
3721 else if (eh->plt_got.offset != (bfd_vma) -1)
3722 {
3723 bfd_vma got_offset, plt_offset;
3724 asection *plt, *got, *gotplt;
3725 const bfd_byte *got_plt_entry;
3726
dd7e64d4
L		 3727 /* Set the entry in the GOT procedure linkage table. */
3728 plt = htab->plt_got;
3729 got = htab->elf.sgot;
3730 gotplt = htab->elf.sgotplt;
3731 got_offset = h->got.offset;
3732
3733 if (got_offset == (bfd_vma) -1
3734 || plt == NULL
3735 || got == NULL
3736 || gotplt == NULL)
3737 abort ();
3738
3739 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 3740 if (! bfd_link_pic (info))
252b5132 3741 {
765e526c 3742 got_plt_entry = htab->non_lazy_plt->plt_entry;
dd7e64d4 3743 got_offset += got->output_section->vma + got->output_offset;
252b5132 3744 }
dd7e64d4
L		 3745 else
3746 {
765e526c 3747 got_plt_entry = htab->non_lazy_plt->pic_plt_entry;
dd7e64d4
L		 3748 got_offset += (got->output_section->vma
3749 + got->output_offset
3750 - gotplt->output_section->vma
3751 - gotplt->output_offset);
3752 }
3753
3754 plt_offset = eh->plt_got.offset;
3755 memcpy (plt->contents + plt_offset, got_plt_entry,
765e526c 3756 htab->non_lazy_plt->plt_entry_size);
dd7e64d4 3757 bfd_put_32 (output_bfd, got_offset,
f604c2a2 3758 (plt->contents + plt_offset
765e526c 3759 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 3760 }
3761
aec6b87e
L		 3762 if (!local_undefweak
3763 && !h->def_regular
dd7e64d4
L		 3764 && (h->plt.offset != (bfd_vma) -1
3765 || eh->plt_got.offset != (bfd_vma) -1))
3766 {
3767 /* Mark the symbol as undefined, rather than as defined in
3768 the .plt section. Leave the value if there were any
3769 relocations where pointer equality matters (this is a clue
3770 for the dynamic linker, to make function pointer
3771 comparisons work between an application and shared
3772 library), otherwise set it to zero. If a function is only
3773 called from a binary, there is no need to slow down
3774 shared libraries because of that. */
3775 sym->st_shndx = SHN_UNDEF;
3776 if (!h->pointer_equality_needed)
3777 sym->st_value = 0;
252b5132
RH		 3778 }
3779
aec6b87e
L		 3780 /* Don't generate dynamic GOT relocation against undefined weak
3781 symbol in executable. */
13ae64f3 3782 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 3783 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry(h)->tls_type)
3784 && (elf_x86_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
aec6b87e 3785 && !local_undefweak)
252b5132 3786 {
947216bf 3787 Elf_Internal_Rela rel;
233cc9c1 3788 asection *relgot = htab->elf.srelgot;
252b5132
RH		 3789
3790 /* This symbol has an entry in the global offset table. Set it
3791 up. */
3792
6de2ae4a 3793 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 3794 abort ();
252b5132 3795
6de2ae4a
L		 3796 rel.r_offset = (htab->elf.sgot->output_section->vma
3797 + htab->elf.sgot->output_offset
dc810e39 3798 + (h->got.offset & ~(bfd_vma) 1));
252b5132 3799
dd5724d5
AM		 3800 /* If this is a static link, or it is a -Bsymbolic link and the
3801 symbol is defined locally or was forced to be local because
3802 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 3803 The entry in the global offset table will already have been
3804 initialized in the relocate_section function. */
710ab287 3805 if (h->def_regular
0018b0a3
L		 3806 && h->type == STT_GNU_IFUNC)
3807 {
233cc9c1
L		 3808 if (h->plt.offset == (bfd_vma) -1)
3809 {
3810 /* STT_GNU_IFUNC is referenced without PLT. */
3811 if (htab->elf.splt == NULL)
3812 {
3813 /* use .rel[a].iplt section to store .got relocations
3814 in static executable. */
3815 relgot = htab->elf.irelplt;
3816 }
6999821f 3817 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 3818 {
6322e5c5
L		 3819 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
3820 h->root.root.string,
3821 h->root.u.def.section->owner);
3822
233cc9c1
L		 3823 bfd_put_32 (output_bfd,
3824 (h->root.u.def.value
3825 + h->root.u.def.section->output_section->vma
3826 + h->root.u.def.section->output_offset),
3827 htab->elf.sgot->contents + h->got.offset);
3828 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3829 }
3830 else
3831 goto do_glob_dat;
3832 }
3833 else if (bfd_link_pic (info))
710ab287
L		 3834 {
3835 /* Generate R_386_GLOB_DAT. */
3836 goto do_glob_dat;
3837 }
3838 else
3839 {
cd2b2c10 3840 asection *plt;
ee2fdd6f 3841 bfd_vma plt_offset;
cd2b2c10 3842
710ab287
L		 3843 if (!h->pointer_equality_needed)
3844 abort ();
3845
3846 /* For non-shared object, we can't use .got.plt, which
3847 contains the real function addres if we need pointer
3848 equality. We load the GOT entry with the PLT entry. */
ee2fdd6f
L		 3849 if (htab->plt_second != NULL)
3850 {
3851 plt = htab->plt_second;
3852 plt_offset = eh->plt_second.offset;
3853 }
3854 else
3855 {
3856 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
3857 plt_offset = h->plt.offset;
3858 }
710ab287
L		 3859 bfd_put_32 (output_bfd,
3860 (plt->output_section->vma
ee2fdd6f 3861 + plt->output_offset + plt_offset),
6de2ae4a 3862 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 3863 return TRUE;
3864 }
0018b0a3 3865 }
0e1862bb 3866 else if (bfd_link_pic (info)
6999821f 3867 && SYMBOL_REFERENCES_LOCAL_P (info, h))
dd5724d5 3868 {
6725bdbf 3869 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 3870 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3871 }
252b5132
RH		 3872 else
3873 {
dd5724d5 3874 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 3875do_glob_dat:
6725bdbf 3876 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 3877 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 3878 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
3879 }
3880
233cc9c1 3881 elf_append_rel (output_bfd, relgot, &rel);
252b5132
RH		 3882 }
3883
f5385ebf 3884 if (h->needs_copy)
252b5132 3885 {
947216bf 3886 Elf_Internal_Rela rel;
5474d94f 3887 asection *s;
252b5132
RH		 3888
3889 /* This symbol needs a copy reloc. Set it up. */
ff38b4cc 3890 VERIFY_COPY_RELOC (h, htab)
252b5132
RH		 3891
3892 rel.r_offset = (h->root.u.def.value
3893 + h->root.u.def.section->output_section->vma
3894 + h->root.u.def.section->output_offset);
3895 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
afbf7e8e 3896 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3897 s = htab->elf.sreldynrelro;
3898 else
3899 s = htab->elf.srelbss;
3900 elf_append_rel (output_bfd, s, &rel);
252b5132
RH		 3901 }
3902
b34976b6 3903 return TRUE;
252b5132
RH		 3904}
3905
c25bc9fc
L		 3906/* Finish up local dynamic symbol handling. We set the contents of
3907 various dynamic sections here. */
3908
3909static bfd_boolean
3910elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
3911{
3912 struct elf_link_hash_entry *h
3913 = (struct elf_link_hash_entry *) *slot;
3914 struct bfd_link_info *info
23209a78 3915 = (struct bfd_link_info *) inf;
c25bc9fc
L		 3916
3917 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
3918 h, NULL);
3919}
3920
aec6b87e
L		 3921/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
3922 here since undefined weak symbol may not be dynamic and may not be
3923 called for elf_i386_finish_dynamic_symbol. */
3924
3925static bfd_boolean
3926elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
3927 void *inf)
3928{
3929 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
3930 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3931
3932 if (h->root.type != bfd_link_hash_undefweak
3933 || h->dynindx != -1)
3934 return TRUE;
3935
3936 return elf_i386_finish_dynamic_symbol (info->output_bfd,
5f0f0847 3937 info, h, NULL);
aec6b87e
L		 3938}
3939
38701953
AM		 3940/* Used to decide how to sort relocs in an optimal manner for the
3941 dynamic linker, before writing them out. */
3942
3943static enum elf_reloc_type_class
cae1fbbb 3944elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 3945 const asection *rel_sec ATTRIBUTE_UNUSED,
3946 const Elf_Internal_Rela *rela)
38701953 3947{
cae1fbbb
L		 3948 bfd *abfd = info->output_bfd;
3949 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3950 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 3951
d9e3b590
L		 3952 if (htab->dynsym != NULL
3953 && htab->dynsym->contents != NULL)
3954 {
3955 /* Check relocation against STT_GNU_IFUNC symbol if there are
3956 dynamic symbols. */
3957 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
c428ce9d
L		 3958 if (r_symndx != STN_UNDEF)
3959 {
3960 Elf_Internal_Sym sym;
3961 if (!bed->s->swap_symbol_in (abfd,
3962 (htab->dynsym->contents
3963 + r_symndx * sizeof (Elf32_External_Sym)),
3964 0, &sym))
3965 abort ();
d9e3b590 3966
c428ce9d
L		 3967 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3968 return reloc_class_ifunc;
3969 }
d9e3b590 3970 }
cae1fbbb 3971
55fd94b0 3972 switch (ELF32_R_TYPE (rela->r_info))
38701953 3973 {
c428ce9d
L		 3974 case R_386_IRELATIVE:
3975 return reloc_class_ifunc;
38701953
AM		 3976 case R_386_RELATIVE:
3977 return reloc_class_relative;
3978 case R_386_JUMP_SLOT:
3979 return reloc_class_plt;
3980 case R_386_COPY:
3981 return reloc_class_copy;
3982 default:
3983 return reloc_class_normal;
3984 }
3985}
3986
252b5132
RH		 3987/* Finish up the dynamic sections. */
3988
b34976b6 3989static bfd_boolean
55fd94b0
AM		 3990elf_i386_finish_dynamic_sections (bfd *output_bfd,
3991 struct bfd_link_info *info)
252b5132 3992{
0afcef53 3993 struct elf_x86_link_hash_table *htab;
252b5132 3994
9577f60b 3995 htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
4dfe6ac6
NC		 3996 if (htab == NULL)
3997 return FALSE;
3998
9577f60b
L		 3999 if (!htab->elf.dynamic_sections_created)
4000 return TRUE;
252b5132 4001
9577f60b 4002 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 4003 {
9577f60b
L		 4004 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4005 really seem like the right value. */
4006 elf_section_data (htab->elf.splt->output_section)
4007 ->this_hdr.sh_entsize = 4;
252b5132 4008
9577f60b 4009 if (htab->plt.has_plt0)
252b5132 4010 {
9577f60b
L		 4011 /* Fill in the special first entry in the procedure linkage
4012 table. */
9577f60b
L		 4013 memcpy (htab->elf.splt->contents, htab->plt.plt0_entry,
4014 htab->lazy_plt->plt0_entry_size);
4015 memset (htab->elf.splt->contents + htab->lazy_plt->plt0_entry_size,
851b6fa1 4016 htab->plt0_pad_byte,
9577f60b
L		 4017 htab->plt.plt_entry_size - htab->lazy_plt->plt0_entry_size);
4018 if (!bfd_link_pic (info))
252b5132 4019 {
9577f60b
L		 4020 bfd_put_32 (output_bfd,
4021 (htab->elf.sgotplt->output_section->vma
4022 + htab->elf.sgotplt->output_offset
4023 + 4),
4024 htab->elf.splt->contents
4025 + htab->lazy_plt->plt0_got1_offset);
4026 bfd_put_32 (output_bfd,
4027 (htab->elf.sgotplt->output_section->vma
4028 + htab->elf.sgotplt->output_offset
4029 + 8),
4030 htab->elf.splt->contents
4031 + htab->lazy_plt->plt0_got2_offset);
1f78f649 4032
851b6fa1 4033 if (htab->target_os == is_vxworks)
eac338cf 4034 {
9577f60b
L		 4035 Elf_Internal_Rela rel;
4036 int num_plts = (htab->elf.splt->size
4037 / htab->plt.plt_entry_size) - 1;
4038 unsigned char *p;
4039 asection *srelplt2 = htab->srelplt2;
4040
4041 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
4042 + 4. On IA32 we use REL relocations so the
4043 addend goes in the PLT directly. */
4044 rel.r_offset = (htab->elf.splt->output_section->vma
4045 + htab->elf.splt->output_offset
4046 + htab->lazy_plt->plt0_got1_offset);
4047 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
4048 R_386_32);
4049 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4050 srelplt2->contents);
4051 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
4052 + 8. */
4053 rel.r_offset = (htab->elf.splt->output_section->vma
4054 + htab->elf.splt->output_offset
4055 + htab->lazy_plt->plt0_got2_offset);
4056 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
4057 R_386_32);
4058 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4059 srelplt2->contents +
4060 sizeof (Elf32_External_Rel));
4061 /* Correct the .rel.plt.unloaded relocations. */
4062 p = srelplt2->contents;
4063 if (bfd_link_pic (info))
4064 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4065 else
4066 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
eac338cf 4067
9577f60b 4068 for (; num_plts; num_plts--)
1f78f649 4069 {
9577f60b 4070 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
f604c2a2 4071 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
1f78f649 4072 R_386_32);
9577f60b
L		 4073 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4074 p += sizeof (Elf32_External_Rel);
f604c2a2 4075
9577f60b
L		 4076 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4077 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
4078 R_386_32);
4079 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4080 p += sizeof (Elf32_External_Rel);
1f78f649 4081 }
eac338cf
PB		 4082 }
4083 }
252b5132 4084 }
fff53dae
L		 4085 }
4086
aec6b87e
L		 4087 /* Fill PLT entries for undefined weak symbols in PIE. */
4088 if (bfd_link_pie (info))
4089 bfd_hash_traverse (&info->hash->table,
4090 elf_i386_pie_finish_undefweak_symbol,
4091 info);
4092
b34976b6 4093 return TRUE;
252b5132
RH		 4094}
4095
233cc9c1
L		 4096/* Fill PLT/GOT entries and allocate dynamic relocations for local
4097 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4098 It has to be done before elf_link_sort_relocs is called so that
4099 dynamic relocations are properly sorted. */
4100
4101static bfd_boolean
4102elf_i386_output_arch_local_syms
4103 (bfd *output_bfd ATTRIBUTE_UNUSED,
4104 struct bfd_link_info *info,
4105 void *flaginfo ATTRIBUTE_UNUSED,
4106 int (*func) (void *, const char *,
4107 Elf_Internal_Sym *,
4108 asection *,
4109 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4110{
0afcef53
L		 4111 struct elf_x86_link_hash_table *htab
4112 = elf_x86_hash_table (info, I386_ELF_DATA);
233cc9c1
L		 4113 if (htab == NULL)
4114 return FALSE;
4115
4116 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4117 htab_traverse (htab->loc_hash_table,
4118 elf_i386_finish_local_dynamic_symbol,
4119 info);
4120
4121 return TRUE;
4122}
4123
f604c2a2 4124/* Forward declaration. */
765e526c 4125static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt;
f604c2a2
L		 4126
4127/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4128 dynamic relocations. */
4129
4130static long
4131elf_i386_get_synthetic_symtab (bfd *abfd,
4132 long symcount ATTRIBUTE_UNUSED,
4133 asymbol **syms ATTRIBUTE_UNUSED,
4134 long dynsymcount,
4135 asymbol **dynsyms,
4136 asymbol **ret)
4137{
f493882d 4138 long count, i, n;
f604c2a2 4139 int j;
f604c2a2 4140 bfd_byte *plt_contents;
f493882d 4141 long relsize;
765e526c
L		 4142 const struct elf_x86_lazy_plt_layout *lazy_plt;
4143 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4144 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4145 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
f604c2a2
L		 4146 asection *plt;
4147 bfd_vma got_addr;
f493882d
L		 4148 enum elf_x86_plt_type plt_type;
4149 struct elf_x86_plt plts[] =
3972882e 4150 {
f493882d
L		 4151 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4152 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
4153 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4154 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
f604c2a2 4155 };
144bed8d 4156
f604c2a2 4157 *ret = NULL;
144bed8d 4158
f604c2a2
L		 4159 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4160 return 0;
3972882e 4161
f604c2a2
L		 4162 if (dynsymcount <= 0)
4163 return 0;
cca5b8b6 4164
f604c2a2
L		 4165 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4166 if (relsize <= 0)
4167 return -1;
cca5b8b6 4168
f604c2a2
L		 4169 non_lazy_plt = NULL;
4170 /* Silence GCC 6. */
4171 lazy_plt = NULL;
ee2fdd6f
L		 4172 non_lazy_ibt_plt = NULL;
4173 lazy_ibt_plt = NULL;
851b6fa1 4174 switch (get_elf_x86_backend_data (abfd)->target_os)
144bed8d 4175 {
f604c2a2
L		 4176 case is_normal:
4177 non_lazy_plt = &elf_i386_non_lazy_plt;
ee2fdd6f
L		 4178 lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
4179 non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
f604c2a2
L		 4180 /* Fall through */
4181 case is_vxworks:
4182 lazy_plt = &elf_i386_lazy_plt;
4183 break;
4184 case is_nacl:
4185 lazy_plt = &elf_i386_nacl_plt;
4186 break;
4187 }
4188
4189 got_addr = 0;
3972882e 4190
f604c2a2
L		 4191 count = 0;
4192 for (j = 0; plts[j].name != NULL; j++)
4193 {
4194 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4195 if (plt == NULL || plt->size == 0)
6f25f223 4196 continue;
533d0af0 4197
f604c2a2
L		 4198 /* Get the PLT section contents. */
4199 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4200 if (plt_contents == NULL)
4201 break;
4202 if (!bfd_get_section_contents (abfd, (asection *) plt,
4203 plt_contents, 0, plt->size))
4204 {
4205 free (plt_contents);
4206 break;
4207 }
4208
4209 /* Check what kind of PLT it is. */
4210 plt_type = plt_unknown;
90efb642
L		 4211 if (plts[j].type == plt_unknown
4212 && (plt->size >= (lazy_plt->plt0_entry_size
4213 + lazy_plt->plt_entry_size)))
f604c2a2
L		 4214 {
4215 /* Match lazy PLT first. */
4216 if (memcmp (plt_contents, lazy_plt->plt0_entry,
4217 lazy_plt->plt0_got1_offset) == 0)
ee2fdd6f
L		 4218 {
4219 /* The fist entry in the lazy IBT PLT is the same as the
4220 normal lazy PLT. */
4221 if (lazy_ibt_plt != NULL
90efb642 4222 && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
ee2fdd6f
L		 4223 lazy_ibt_plt->plt_entry,
4224 lazy_ibt_plt->plt_got_offset) == 0))
4225 plt_type = plt_lazy | plt_second;
4226 else
4227 plt_type = plt_lazy;
4228 }
f604c2a2
L		 4229 else if (memcmp (plt_contents, lazy_plt->pic_plt0_entry,
4230 lazy_plt->plt0_got1_offset) == 0)
ee2fdd6f
L		 4231 {
4232 /* The fist entry in the PIC lazy IBT PLT is the same as
4233 the normal PIC lazy PLT. */
4234 if (lazy_ibt_plt != NULL
90efb642 4235 && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
ee2fdd6f
L		 4236 lazy_ibt_plt->pic_plt_entry,
4237 lazy_ibt_plt->plt_got_offset) == 0))
4238 plt_type = plt_lazy | plt_pic | plt_second;
4239 else
4240 plt_type = plt_lazy | plt_pic;
4241 }
f604c2a2
L		 4242 }
4243
4244 if (non_lazy_plt != NULL
90efb642
L		 4245 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4246 && plt->size >= non_lazy_plt->plt_entry_size)
f604c2a2
L		 4247 {
4248 /* Match non-lazy PLT. */
4249 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4250 non_lazy_plt->plt_got_offset) == 0)
4251 plt_type = plt_non_lazy;
4252 else if (memcmp (plt_contents, non_lazy_plt->pic_plt_entry,
4253 non_lazy_plt->plt_got_offset) == 0)
4254 plt_type = plt_pic;
4255 }
4256
ee2fdd6f 4257 if ((non_lazy_ibt_plt != NULL)
90efb642
L		 4258 && (plt_type == plt_unknown || plt_type == plt_second)
4259 && plt->size >= non_lazy_ibt_plt->plt_entry_size)
ee2fdd6f
L		 4260 {
4261 if (memcmp (plt_contents,
4262 non_lazy_ibt_plt->plt_entry,
4263 non_lazy_ibt_plt->plt_got_offset) == 0)
4264 {
4265 /* Match IBT PLT. */
4266 plt_type = plt_second;
4267 non_lazy_plt = non_lazy_ibt_plt;
4268 }
4269 else if (memcmp (plt_contents,
4270 non_lazy_ibt_plt->pic_plt_entry,
4271 non_lazy_ibt_plt->plt_got_offset) == 0)
4272 {
4273 /* Match PIC IBT PLT. */
4274 plt_type = plt_second | plt_pic;
4275 non_lazy_plt = non_lazy_ibt_plt;
4276 }
4277 }
4278
f604c2a2 4279 if (plt_type == plt_unknown)
37c0b6ee
L		 4280 {
4281 free (plt_contents);
4282 continue;
4283 }
3972882e 4284
f604c2a2
L		 4285 plts[j].sec = plt;
4286 plts[j].type = plt_type;
ec1f73bb 4287
f604c2a2
L		 4288 if ((plt_type & plt_lazy))
4289 {
4290 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4291 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4292 /* Skip PLT0 in lazy PLT. */
4293 i = 1;
4294 }
4295 else
4296 {
4297 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4298 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4299 i = 0;
4300 }
fca6ae69 4301
ee2fdd6f
L		 4302 /* Skip lazy PLT when the second PLT is used. */
4303 if ((plt_type & (plt_lazy | plt_second))
4304 == (plt_lazy | plt_second))
4305 plts[j].count = 0;
4306 else
4307 {
4308 n = plt->size / plts[j].plt_entry_size;
4309 plts[j].count = n;
4310 count += n - i;
4311 }
f604c2a2
L		 4312
4313 plts[j].contents = plt_contents;
4314
4315 /* The _GLOBAL_OFFSET_TABLE_ address is needed. */
4316 if ((plt_type & plt_pic))
4317 got_addr = (bfd_vma) -1;
144bed8d
L		 4318 }
4319
f493882d
L		 4320 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4321 got_addr, plts, dynsyms,
4322 ret);
4c45e5c9
JJ		 4323}
4324
f604c2a2
L		 4325/* Set up i386 GNU properties. Return the first relocatable ELF input
4326 with GNU properties if found. Otherwise, return NULL. */
4327
4328static bfd *
4329elf_i386_link_setup_gnu_properties (struct bfd_link_info *info)
4330{
1de031c8 4331 struct elf_x86_init_table init_table;
f604c2a2 4332
851b6fa1 4333 switch (get_elf_x86_backend_data (info->output_bfd)->target_os)
f604c2a2
L		 4334 {
4335 case is_normal:
851b6fa1 4336 init_table.plt0_pad_byte = 0x0;
1de031c8
L		 4337 init_table.lazy_plt = &elf_i386_lazy_plt;
4338 init_table.non_lazy_plt = &elf_i386_non_lazy_plt;
4339 init_table.lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
4340 init_table.non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
f604c2a2
L		 4341 break;
4342 case is_vxworks:
851b6fa1 4343 init_table.plt0_pad_byte = 0x90;
1de031c8
L		 4344 init_table.lazy_plt = &elf_i386_lazy_plt;
4345 init_table.non_lazy_plt = NULL;
4346 init_table.lazy_ibt_plt = NULL;
4347 init_table.non_lazy_ibt_plt = NULL;
f604c2a2
L		 4348 break;
4349 case is_nacl:
851b6fa1 4350 init_table.plt0_pad_byte = 0x90;
1de031c8
L		 4351 init_table.lazy_plt = &elf_i386_nacl_plt;
4352 init_table.non_lazy_plt = NULL;
4353 init_table.lazy_ibt_plt = NULL;
4354 init_table.non_lazy_ibt_plt = NULL;
f604c2a2
L		 4355 break;
4356 }
4357
1de031c8
L		 4358 init_table.r_info = elf32_r_info;
4359 init_table.r_sym = elf32_r_sym;
7a382c1c 4360
1de031c8 4361 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
f604c2a2
L		 4362}
4363
6d00b590 4364#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 4365#define TARGET_LITTLE_NAME "elf32-i386"
4366#define ELF_ARCH bfd_arch_i386
ae95ffa6 4367#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 4368#define ELF_MACHINE_CODE EM_386
4369#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 4370
4371#define elf_backend_can_gc_sections 1
51b64d56 4372#define elf_backend_can_refcount 1
252b5132
RH		 4373#define elf_backend_want_got_plt 1
4374#define elf_backend_plt_readonly 1
4375#define elf_backend_want_plt_sym 0
4376#define elf_backend_got_header_size 12
e41b3a13 4377#define elf_backend_plt_alignment 4
64f52338 4378#define elf_backend_dtrel_excludes_plt 1
f7483970 4379#define elf_backend_extern_protected_data 1
bedfd056 4380#define elf_backend_caches_rawsize 1
5474d94f 4381#define elf_backend_want_dynrelro 1
252b5132 4382
8c29f035
AM		 4383/* Support RELA for objdump of prelink objects. */
4384#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 4385#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
4386
dd5724d5 4387#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
dd5724d5 4388#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 4389#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 4390#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5 4391
13285a1b 4392#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 4393#define elf_backend_check_relocs elf_i386_check_relocs
f604c2a2 4394#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
0ac8d2ca 4395#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 4396#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
4397#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
233cc9c1 4398#define elf_backend_output_arch_local_syms elf_i386_output_arch_local_syms
c5fccbec
DJ		 4399#define elf_backend_grok_prstatus elf_i386_grok_prstatus
4400#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 4401#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca 4402#define elf_backend_relocate_section elf_i386_relocate_section
f604c2a2 4403#define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties
9f857535 4404#define elf_backend_hide_symbol _bfd_x86_elf_hide_symbol
dd5724d5 4405
a2f63b2e
MR		 4406#define elf_backend_linux_prpsinfo32_ugid16 TRUE
4407
252b5132 4408#include "elf32-target.h"
2bc3c89a
AM		 4409
4410/* FreeBSD support. */
4411
4412#undef TARGET_LITTLE_SYM
6d00b590 4413#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 4414#undef TARGET_LITTLE_NAME
4415#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 4416#undef ELF_OSABI
4417#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 4418
4419/* The kernel recognizes executables as valid only if they carry a
4420 "FreeBSD" label in the ELF header. So we put this label on all
4421 executables and (for simplicity) also all other object files. */
4422
2bc3c89a 4423static void
d8045f23 4424elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 4425{
78245035 4426 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 4427
2bc3c89a 4428#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 4429 {
4430 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
4431 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4432 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
4433 }
caf47ea6 4434#endif
2bc3c89a
AM		 4435}
4436
4437#undef elf_backend_post_process_headers
d8045f23 4438#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 4439#undef elf32_bed
4440#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 4441
d8045f23
NC		 4442#undef elf_backend_add_symbol_hook
4443
2bc3c89a 4444#include "elf32-target.h"
eac338cf 4445
a6cc6b3b
RO		 4446/* Solaris 2. */
4447
4448#undef TARGET_LITTLE_SYM
6d00b590 4449#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 4450#undef TARGET_LITTLE_NAME
4451#define TARGET_LITTLE_NAME "elf32-i386-sol2"
4452
914082d1
L		 4453#undef elf_backend_post_process_headers
4454
a6cc6b3b
RO		 4455/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
4456 objects won't be recognized. */
4457#undef ELF_OSABI
4458
4459#undef elf32_bed
4460#define elf32_bed elf32_i386_sol2_bed
4461
7dc98aea
RO		 4462/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
4463 boundary. */
84865015 4464#undef elf_backend_static_tls_alignment
7dc98aea
RO		 4465#define elf_backend_static_tls_alignment 8
4466
a6cc6b3b
RO		 4467/* The Solaris 2 ABI requires a plt symbol on all platforms.
4468
4469 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
4470 File, p.63. */
84865015 4471#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 4472#define elf_backend_want_plt_sym 1
4473
84865015
NC		 4474#undef elf_backend_strtab_flags
4475#define elf_backend_strtab_flags SHF_STRINGS
4476
5522f910
NC		 4477/* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
4478 has a type >= SHT_LOOS. Returns TRUE if these fields were initialised
4479 FALSE otherwise. ISECTION is the best guess matching section from the
4480 input bfd IBFD, but it might be NULL. */
4481
84865015 4482static bfd_boolean
5522f910
NC		 4483elf32_i386_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
4484 bfd *obfd ATTRIBUTE_UNUSED,
4485 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
4486 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 4487{
4488 /* PR 19938: FIXME: Need to add code for setting the sh_info
5522f910
NC		 4489 and sh_link fields of Solaris specific section types. */
4490 return FALSE;
84865015 4491
5522f910 4492 /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13,
84865015
NC		 4493 Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation:
4494
4495http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc
4496
4497 The following values should be set:
4498
4499Type Link Info
4500-----------------------------------------------------------------------------
4501SHT_SUNW_ancillary The section header index of 0
4502 [0x6fffffee] the associated string table.
4503
4504SHT_SUNW_capinfo The section header index of For a dynamic object, the
4505 [0x6ffffff0] the associated symbol table. section header index of
4506 the associated
4507 SHT_SUNW_capchain table,
4508 otherwise 0.
4509
4510SHT_SUNW_symsort The section header index of 0
4511 [0x6ffffff1] the associated symbol table.
4512
4513SHT_SUNW_tlssort The section header index of 0
4514 [0x6ffffff2] the associated symbol table.
4515
4516SHT_SUNW_LDYNSYM The section header index of One greater than the
4517 [0x6ffffff3] the associated string table. symbol table index of the
4518 This index is the same string last local symbol,
4519 table used by the SHT_DYNSYM STB_LOCAL. Since
4520 section. SHT_SUNW_LDYNSYM only
4521 contains local symbols,
4522 sh_info is equivalent to
4523 the number of symbols in
4524 the table.
4525
4526SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer
4527 [0x6ffffff5] the section header index of to named strings, the
4528 the associated section header index of
4529 SHT_SUNW_capinfo table, the associated string
4530 otherwise 0. table, otherwise 0.
4531
4532SHT_SUNW_move The section header index of 0
4533 [0x6ffffffa] the associated symbol table.
4534
4535SHT_SUNW_COMDAT 0 0
4536 [0x6ffffffb]
4537
4538SHT_SUNW_syminfo The section header index of The section header index
4539 [0x6ffffffc] the associated symbol table. of the associated
4540 .dynamic section.
4541
4542SHT_SUNW_verdef The section header index of The number of version
4543 [0x6ffffffd] the associated string table. definitions within the
4544 section.
4545
4546SHT_SUNW_verneed The section header index of The number of version
4547 [0x6ffffffe] the associated string table. dependencies within the
4548 section.
4549
4550SHT_SUNW_versym The section header index of 0
4551 [0x6fffffff] the associated symbol table. */
84865015
NC		 4552}
4553
5522f910
NC		 4554#undef elf_backend_copy_special_section_fields
4555#define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields
84865015 4556
a6cc6b3b
RO		 4557#include "elf32-target.h"
4558
bf64a951
L		 4559/* Intel MCU support. */
4560
4561static bfd_boolean
4562elf32_iamcu_elf_object_p (bfd *abfd)
4563{
4564 /* Set the right machine number for an IAMCU elf32 file. */
4565 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
4566 return TRUE;
4567}
4568
4569#undef TARGET_LITTLE_SYM
4570#define TARGET_LITTLE_SYM iamcu_elf32_vec
4571#undef TARGET_LITTLE_NAME
4572#define TARGET_LITTLE_NAME "elf32-iamcu"
84865015 4573#undef ELF_ARCH
bf64a951
L		 4574#define ELF_ARCH bfd_arch_iamcu
4575
4576#undef ELF_MACHINE_CODE
4577#define ELF_MACHINE_CODE EM_IAMCU
4578
4579#undef ELF_OSABI
4580
4581#undef elf32_bed
4582#define elf32_bed elf32_iamcu_bed
4583
4584#undef elf_backend_object_p
4585#define elf_backend_object_p elf32_iamcu_elf_object_p
4586
4587#undef elf_backend_static_tls_alignment
4588
4589#undef elf_backend_want_plt_sym
4590#define elf_backend_want_plt_sym 0
4591
84865015 4592#undef elf_backend_strtab_flags
5522f910 4593#undef elf_backend_copy_special_section_fields
84865015 4594
bf64a951
L		 4595#include "elf32-target.h"
4596
4597/* Restore defaults. */
4598#undef ELF_ARCH
4599#define ELF_ARCH bfd_arch_i386
4600#undef ELF_MACHINE_CODE
4601#define ELF_MACHINE_CODE EM_386
4602
a27e4371
RM		 4603/* Native Client support. */
4604
4605#undef TARGET_LITTLE_SYM
6d00b590 4606#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 4607#undef TARGET_LITTLE_NAME
4608#define TARGET_LITTLE_NAME "elf32-i386-nacl"
4609#undef elf32_bed
4610#define elf32_bed elf32_i386_nacl_bed
4611
4612#undef ELF_MAXPAGESIZE
4613#define ELF_MAXPAGESIZE 0x10000
4614
4615/* Restore defaults. */
4616#undef ELF_OSABI
4617#undef elf_backend_want_plt_sym
4618#define elf_backend_want_plt_sym 0
4619#undef elf_backend_post_process_headers
a27e4371
RM		 4620#undef elf_backend_static_tls_alignment
4621
4622/* NaCl uses substantially different PLT entries for the same effects. */
4623
4624#undef elf_backend_plt_alignment
4625#define elf_backend_plt_alignment 5
4626#define NACL_PLT_ENTRY_SIZE 64
4627#define NACLMASK 0xe0 /* 32-byte alignment mask. */
4628
4629static const bfd_byte elf_i386_nacl_plt0_entry[] =
4630 {
4631 0xff, 0x35, /* pushl contents of address */
4632 0, 0, 0, 0, /* replaced with address of .got + 4. */
4633 0x8b, 0x0d, /* movl contents of address, %ecx */
4634 0, 0, 0, 0, /* replaced with address of .got + 8. */
4635 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
4636 0xff, 0xe1 /* jmp *%ecx */
4637 };
4638
4639static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
4640 {
4641 0x8b, 0x0d, /* movl contents of address, %ecx */
4642 0, 0, 0, 0, /* replaced with GOT slot address. */
4643 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
4644 0xff, 0xe1, /* jmp *%ecx */
4645
4646 /* Pad to the next 32-byte boundary with nop instructions. */
4647 0x90,
4648 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4649 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4650
4651 /* Lazy GOT entries point here (32-byte aligned). */
4652 0x68, /* pushl immediate */
4653 0, 0, 0, 0, /* replaced with reloc offset. */
4654 0xe9, /* jmp relative */
4655 0, 0, 0, 0, /* replaced with offset to .plt. */
4656
4657 /* Pad to the next 32-byte boundary with nop instructions. */
4658 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4659 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4660 0x90, 0x90
4661 };
4662
4663static const bfd_byte
4664elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
4665 {
4666 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
4667 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
4668 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
4669 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 4670
4671 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
4672 so pad to that size with nop instructions. */
4673 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 4674 };
4675
4676static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
4677 {
4678 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
4679 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
4680 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
4681 0xff, 0xe1, /* jmp *%ecx */
4682
4683 /* Pad to the next 32-byte boundary with nop instructions. */
4684 0x90,
4685 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4686 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4687
4688 /* Lazy GOT entries point here (32-byte aligned). */
4689 0x68, /* pushl immediate */
4690 0, 0, 0, 0, /* replaced with offset into relocation table. */
4691 0xe9, /* jmp relative */
4692 0, 0, 0, 0, /* replaced with offset to start of .plt. */
4693
4694 /* Pad to the next 32-byte boundary with nop instructions. */
4695 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4696 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4697 0x90, 0x90
4698 };
4699
4700static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
4701 {
4702#if (PLT_CIE_LENGTH != 20 \
4703 || PLT_FDE_LENGTH != 36 \
4704 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
4705 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
851b6fa1 4706# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
a27e4371
RM		 4707#endif
4708 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
4709 0, 0, 0, 0, /* CIE ID */
4710 1, /* CIE version */
4711 'z', 'R', 0, /* Augmentation string */
4712 1, /* Code alignment factor */
4713 0x7c, /* Data alignment factor: -4 */
4714 8, /* Return address column */
4715 1, /* Augmentation size */
4716 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
4717 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
4718 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
4719 DW_CFA_nop, DW_CFA_nop,
4720
4721 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
4722 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
4723 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
4724 0, 0, 0, 0, /* .plt size goes here */
4725 0, /* Augmentation size */
4726 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
4727 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
4728 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
4729 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
4730 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
4731 13, /* Block length */
4732 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
4733 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
4734 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
4735 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
4736 DW_CFA_nop, DW_CFA_nop
4737 };
4738
765e526c 4739static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt =
a27e4371
RM		 4740 {
4741 elf_i386_nacl_plt0_entry, /* plt0_entry */
4742 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
a27e4371
RM		 4743 elf_i386_nacl_plt_entry, /* plt_entry */
4744 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
765e526c
L		 4745 2, /* plt0_got1_offset */
4746 8, /* plt0_got2_offset */
4747 0, /* plt0_got2_insn_end */
a27e4371
RM		 4748 2, /* plt_got_offset */
4749 33, /* plt_reloc_offset */
4750 38, /* plt_plt_offset */
765e526c
L		 4751 0, /* plt_got_insn_size */
4752 0, /* plt_plt_insn_end */
a27e4371
RM		 4753 32, /* plt_lazy_offset */
4754 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
4755 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
4756 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
f604c2a2 4757 sizeof (elf_i386_nacl_eh_frame_plt) /* eh_frame_plt_size */
a27e4371
RM		 4758 };
4759
851b6fa1 4760static const struct elf_x86_backend_data elf_i386_nacl_arch_bed =
a27e4371 4761 {
f604c2a2 4762 is_nacl /* os */
a27e4371
RM		 4763 };
4764
64b384e1
RM		 4765static bfd_boolean
4766elf32_i386_nacl_elf_object_p (bfd *abfd)
4767{
4768 /* Set the right machine number for a NaCl i386 ELF32 file. */
4769 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
4770 return TRUE;
4771}
4772
a27e4371
RM		 4773#undef elf_backend_arch_data
4774#define elf_backend_arch_data &elf_i386_nacl_arch_bed
4775
64b384e1
RM		 4776#undef elf_backend_object_p
4777#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 4778#undef elf_backend_modify_segment_map
4779#define elf_backend_modify_segment_map nacl_modify_segment_map
4780#undef elf_backend_modify_program_headers
4781#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 4782#undef elf_backend_final_write_processing
4783#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 4784
a27e4371
RM		 4785#include "elf32-target.h"
4786
5a68afcf 4787/* Restore defaults. */
64b384e1 4788#undef elf_backend_object_p
5a68afcf
RM		 4789#undef elf_backend_modify_segment_map
4790#undef elf_backend_modify_program_headers
887badb3 4791#undef elf_backend_final_write_processing
5a68afcf 4792
eac338cf
PB		 4793/* VxWorks support. */
4794
4795#undef TARGET_LITTLE_SYM
6d00b590 4796#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 4797#undef TARGET_LITTLE_NAME
4798#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 4799#undef ELF_OSABI
1587442d
L		 4800#undef ELF_MAXPAGESIZE
4801#define ELF_MAXPAGESIZE 0x1000
a27e4371
RM		 4802#undef elf_backend_plt_alignment
4803#define elf_backend_plt_alignment 4
eac338cf 4804
851b6fa1 4805static const struct elf_x86_backend_data elf_i386_vxworks_arch_bed =
23209a78 4806 {
f604c2a2 4807 is_vxworks /* os */
23209a78 4808 };
eac338cf 4809
23209a78
RM		 4810#undef elf_backend_arch_data
4811#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 4812
13285a1b 4813#undef elf_backend_relocs_compatible
eac338cf
PB		 4814#undef elf_backend_add_symbol_hook
4815#define elf_backend_add_symbol_hook \
4816 elf_vxworks_add_symbol_hook
4817#undef elf_backend_link_output_symbol_hook
4818#define elf_backend_link_output_symbol_hook \
9c72ff84 4819 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 4820#undef elf_backend_emit_relocs
4821#define elf_backend_emit_relocs elf_vxworks_emit_relocs
4822#undef elf_backend_final_write_processing
4823#define elf_backend_final_write_processing \
4824 elf_vxworks_final_write_processing
7dc98aea 4825#undef elf_backend_static_tls_alignment
eac338cf
PB		 4826
4827/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4828 define it. */
4829#undef elf_backend_want_plt_sym
4830#define elf_backend_want_plt_sym 1
4831
4832#undef elf32_bed
4833#define elf32_bed elf32_i386_vxworks_bed
4834
4835#include "elf32-target.h"
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