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Adds the new Fields and Operand types for the new instructions in Armv8.4-a.
[deliverable/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;
79b0c981 1603 h->plt.refcount = 1;
37e55690
JJ		 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 {
79b0c981 1754 bfd_boolean func_pointer_ref = FALSE;
233cc9c1 1755
4b627c18
L		 1756 if (r_type == R_386_PC32)
1757 {
1758 /* Since something like ".long foo - ." may be used
1759 as pointer, make sure that PLT is used if foo is
1760 a function defined in a shared library. */
1761 if ((sec->flags & SEC_CODE) == 0)
1762 h->pointer_equality_needed = 1;
74437ea2
L		 1763 else if (h->type == STT_GNU_IFUNC
1764 && bfd_link_pic (info))
1765 {
6322e5c5
L		 1766 _bfd_error_handler
1767 /* xgettext:c-format */
1768 (_("%B: unsupported non-PIC call to IFUNC `%s'"),
1769 abfd, h->root.root.string);
74437ea2
L		 1770 bfd_set_error (bfd_error_bad_value);
1771 goto error_return;
1772 }
4b627c18
L		 1773 }
1774 else
04ebc307
L		 1775 {
1776 h->pointer_equality_needed = 1;
1777 /* R_386_32 can be resolved at run-time. */
1778 if (r_type == R_386_32
1779 && (sec->flags & SEC_READONLY) == 0)
79b0c981
L		 1780 func_pointer_ref = TRUE;
1781 }
1782
1783 if (!func_pointer_ref)
1784 {
1785 /* If this reloc is in a read-only section, we might
1786 need a copy reloc. We can't check reliably at this
1787 stage whether the section is read-only, as input
1788 sections have not yet been mapped to output sections.
1789 Tentatively set the flag for now, and correct in
1790 adjust_dynamic_symbol. */
1791 h->non_got_ref = 1;
1792
1793 /* We may need a .plt entry if the symbol is a function
1794 defined in a shared lib or is a function referenced
1795 from the code or read-only section. */
1796 if (!h->def_regular
1797 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
1798 h->plt.refcount = 1;
04ebc307 1799 }
6725bdbf 1800 }
7843f00e 1801
06a6a421 1802 size_reloc = FALSE;
6a3e1bae 1803do_size:
daf1c414
L		 1804 if (NEED_DYNAMIC_RELOCATION_P (info, h, sec, r_type,
1805 R_386_32))
252b5132 1806 {
e03a8ed8
L		 1807 struct elf_dyn_relocs *p;
1808 struct elf_dyn_relocs **head;
ec338859 1809
12d0ee4a
AM		 1810 /* We must copy these reloc types into the output file.
1811 Create a reloc section in dynobj and make room for
1812 this reloc. */
252b5132
RH		 1813 if (sreloc == NULL)
1814 {
83bac4b0
NC		 1815 sreloc = _bfd_elf_make_dynamic_reloc_section
1816 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1817
252b5132 1818 if (sreloc == NULL)
c337a162 1819 goto error_return;
252b5132
RH		 1820 }
1821
0c715baa
AM		 1822 /* If this is a global symbol, we count the number of
1823 relocations we need for this symbol. */
1824 if (h != NULL)
252b5132 1825 {
d5597ebc 1826 head = &eh->dyn_relocs;
0c715baa
AM		 1827 }
1828 else
1829 {
ec338859
AM		 1830 /* Track dynamic relocs needed for local syms too.
1831 We really need local syms available to do this
1832 easily. Oh well. */
87d72d41 1833 void **vpp;
ec338859 1834 asection *s;
87d72d41
AM		 1835
1836 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1837 abfd, r_symndx);
1838 if (isym == NULL)
c337a162 1839 goto error_return;
87d72d41
AM		 1840
1841 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1842 if (s == NULL)
87d72d41 1843 s = sec;
ec338859 1844
e81d3500 1845 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1846 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1847 }
1848
1849 p = *head;
1850 if (p == NULL || p->sec != sec)
1851 {
1852 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1853 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1854 amt);
ec338859 1855 if (p == NULL)
c337a162 1856 goto error_return;
ec338859
AM		 1857 p->next = *head;
1858 *head = p;
1859 p->sec = sec;
1860 p->count = 0;
1861 p->pc_count = 0;
252b5132 1862 }
ec338859
AM		 1863
1864 p->count += 1;
06a6a421
L		 1865 /* Count size relocation as PC-relative relocation. */
1866 if (r_type == R_386_PC32 || size_reloc)
ec338859 1867 p->pc_count += 1;
252b5132 1868 }
252b5132
RH		 1869 break;
1870
1871 /* This relocation describes the C++ object vtable hierarchy.
1872 Reconstruct it for later use during GC. */
1873 case R_386_GNU_VTINHERIT:
d17e0c6e 1874 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c337a162 1875 goto error_return;
252b5132
RH		 1876 break;
1877
1878 /* This relocation describes which C++ vtable entries are actually
1879 used. Record for later use during GC. */
1880 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1881 BFD_ASSERT (h != NULL);
1882 if (h != NULL
1883 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c337a162 1884 goto error_return;
252b5132
RH		 1885 break;
1886
1887 default:
1888 break;
1889 }
1890 }
1891
bedfd056
L		 1892 if (elf_section_data (sec)->this_hdr.contents != contents)
1893 {
5e5e02ae 1894 if (!converted && !info->keep_memory)
bedfd056
L		 1895 free (contents);
1896 else
1897 {
5e5e02ae
L		 1898 /* Cache the section contents for elf_link_input_bfd if any
1899 load is converted or --no-keep-memory isn't used. */
bedfd056
L		 1900 elf_section_data (sec)->this_hdr.contents = contents;
1901 }
1902 }
1903
5e5e02ae
L		 1904 /* Cache relocations if any load is converted. */
1905 if (elf_section_data (sec)->relocs != relocs && converted)
1906 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
1907
b34976b6 1908 return TRUE;
c337a162
L		 1909
1910error_return:
bedfd056
L		 1911 if (elf_section_data (sec)->this_hdr.contents != contents)
1912 free (contents);
c337a162
L		 1913 sec->check_relocs_failed = 1;
1914 return FALSE;
252b5132
RH		 1915}
1916
38701953
AM		 1917/* Set the correct type for an x86 ELF section. We do this by the
1918 section name, which is a hack, but ought to work. */
1919
b34976b6 1920static bfd_boolean
55fd94b0
AM		 1921elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1922 Elf_Internal_Shdr *hdr,
1923 asection *sec)
38701953 1924{
91d6fa6a 1925 const char *name;
38701953
AM		 1926
1927 name = bfd_get_section_name (abfd, sec);
1928
1929 /* This is an ugly, but unfortunately necessary hack that is
1930 needed when producing EFI binaries on x86. It tells
1931 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1932 containing ELF relocation info. We need this hack in order to
1933 be able to generate ELF binaries that can be translated into
1934 EFI applications (which are essentially COFF objects). Those
1935 files contain a COFF ".reloc" section inside an ELFNN object,
1936 which would normally cause BFD to segfault because it would
1937 attempt to interpret this section as containing relocation
1938 entries for section "oc". With this hack enabled, ".reloc"
1939 will be treated as a normal data section, which will avoid the
1940 segfault. However, you won't be able to create an ELFNN binary
1941 with a section named "oc" that needs relocations, but that's
1942 the kind of ugly side-effects you get when detecting section
1943 types based on their names... In practice, this limitation is
1944 unlikely to bite. */
1945 if (strcmp (name, ".reloc") == 0)
1946 hdr->sh_type = SHT_PROGBITS;
1947
b34976b6 1948 return TRUE;
38701953
AM		 1949}
1950
13ae64f3
JJ		 1951/* Return the relocation value for @tpoff relocation
1952 if STT_TLS virtual address is ADDRESS. */
1953
1954static bfd_vma
eb4ff4d6 1955elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 1956{
e1918d23 1957 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 1958 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
1959 bfd_vma static_tls_size;
13ae64f3 1960
e1918d23
AM		 1961 /* If tls_sec is NULL, we should have signalled an error already. */
1962 if (htab->tls_sec == NULL)
6a30718d 1963 return 0;
7dc98aea
RO		 1964
1965 /* Consider special static TLS alignment requirements. */
1966 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
1967 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 1968}
1969
252b5132
RH		 1970/* Relocate an i386 ELF section. */
1971
b34976b6 1972static bfd_boolean
55fd94b0
AM		 1973elf_i386_relocate_section (bfd *output_bfd,
1974 struct bfd_link_info *info,
1975 bfd *input_bfd,
1976 asection *input_section,
1977 bfd_byte *contents,
1978 Elf_Internal_Rela *relocs,
1979 Elf_Internal_Sym *local_syms,
1980 asection **local_sections)
252b5132 1981{
0afcef53 1982 struct elf_x86_link_hash_table *htab;
252b5132
RH		 1983 Elf_Internal_Shdr *symtab_hdr;
1984 struct elf_link_hash_entry **sym_hashes;
1985 bfd_vma *local_got_offsets;
67a4f2b7 1986 bfd_vma *local_tlsdesc_gotents;
252b5132 1987 Elf_Internal_Rela *rel;
60f2e42e 1988 Elf_Internal_Rela *wrel;
252b5132 1989 Elf_Internal_Rela *relend;
3348747a 1990 bfd_boolean is_vxworks_tls;
25e762b9 1991 unsigned plt_entry_size;
252b5132 1992
c337a162
L		 1993 /* Skip if check_relocs failed. */
1994 if (input_section->check_relocs_failed)
1995 return FALSE;
1996
0afcef53 1997 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 1998 if (htab == NULL)
1999 return FALSE;
fe53b4a4
L		 2000
2001 BFD_ASSERT (is_x86_elf (input_bfd, htab));
2002
0ffa91dd 2003 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 2004 sym_hashes = elf_sym_hashes (input_bfd);
2005 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2006 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 2007 /* We have to handle relocations in vxworks .tls_vars sections
2008 specially, because the dynamic loader is 'weird'. */
851b6fa1 2009 is_vxworks_tls = (htab->target_os == is_vxworks
0e1862bb 2010 && bfd_link_pic (info)
3348747a
NS		 2011 && !strcmp (input_section->output_section->name,
2012 ".tls_vars"));
252b5132 2013
0afcef53 2014 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2015
765e526c 2016 plt_entry_size = htab->plt.plt_entry_size;
25e762b9 2017
60f2e42e 2018 rel = wrel = relocs;
252b5132 2019 relend = relocs + input_section->reloc_count;
60f2e42e 2020 for (; rel < relend; wrel++, rel++)
252b5132 2021 {
419414ea 2022 unsigned int r_type, r_type_tls;
252b5132
RH		 2023 reloc_howto_type *howto;
2024 unsigned long r_symndx;
2025 struct elf_link_hash_entry *h;
0afcef53 2026 struct elf_x86_link_hash_entry *eh;
252b5132
RH		 2027 Elf_Internal_Sym *sym;
2028 asection *sec;
dd7e64d4 2029 bfd_vma off, offplt, plt_offset;
252b5132 2030 bfd_vma relocation;
b34976b6 2031 bfd_boolean unresolved_reloc;
252b5132 2032 bfd_reloc_status_type r;
1b452ec6 2033 unsigned int indx;
13ae64f3 2034 int tls_type;
1788fc08 2035 bfd_vma st_size;
dd7e64d4 2036 asection *resolved_plt;
aec6b87e 2037 bfd_boolean resolved_to_zero;
e133d005 2038 bfd_boolean relative_reloc;
252b5132
RH		 2039
2040 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 2041 if (r_type == R_386_GNU_VTINHERIT
2042 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 2043 {
2044 if (wrel != rel)
2045 *wrel = *rel;
2046 continue;
2047 }
dc47f327 2048
55fd94b0 2049 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 2050 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2051 >= R_386_ext - R_386_standard)
2052 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 2053 >= R_386_ext2 - R_386_ext))
47aeb64c
NC		 2054 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2055
1b452ec6 2056 howto = elf_howto_table + indx;
252b5132
RH		 2057
2058 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 2059 h = NULL;
2060 sym = NULL;
2061 sec = NULL;
b34976b6 2062 unresolved_reloc = FALSE;
252b5132
RH		 2063 if (r_symndx < symtab_hdr->sh_info)
2064 {
2065 sym = local_syms + r_symndx;
2066 sec = local_sections[r_symndx];
2067 relocation = (sec->output_section->vma
2068 + sec->output_offset
2069 + sym->st_value);
1788fc08 2070 st_size = sym->st_size;
ab96bf03
AM		 2071
2072 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2073 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 2074 || (bfd_link_relocatable (info)
ab96bf03 2075 && sec->output_offset != 0)))
f8df10f4 2076 {
f8df10f4 2077 bfd_vma addend;
4a335f3d 2078 bfd_byte *where = contents + rel->r_offset;
f8df10f4 2079
4a335f3d 2080 switch (howto->size)
f8df10f4 2081 {
4a335f3d
AM		 2082 case 0:
2083 addend = bfd_get_8 (input_bfd, where);
2084 if (howto->pc_relative)
2085 {
2086 addend = (addend ^ 0x80) - 0x80;
2087 addend += 1;
2088 }
2089 break;
2090 case 1:
2091 addend = bfd_get_16 (input_bfd, where);
2092 if (howto->pc_relative)
2093 {
2094 addend = (addend ^ 0x8000) - 0x8000;
2095 addend += 2;
2096 }
2097 break;
2098 case 2:
2099 addend = bfd_get_32 (input_bfd, where);
2100 if (howto->pc_relative)
2101 {
2102 addend = (addend ^ 0x80000000) - 0x80000000;
2103 addend += 4;
2104 }
2105 break;
2106 default:
2107 abort ();
f8df10f4
JJ		 2108 }
2109
0e1862bb 2110 if (bfd_link_relocatable (info))
ab96bf03
AM		 2111 addend += sec->output_offset;
2112 else
2113 {
2114 asection *msec = sec;
2115 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2116 addend);
2117 addend -= relocation;
2118 addend += msec->output_section->vma + msec->output_offset;
2119 }
4a335f3d
AM		 2120
2121 switch (howto->size)
2122 {
2123 case 0:
16a10388 2124 /* FIXME: overflow checks. */
4a335f3d
AM		 2125 if (howto->pc_relative)
2126 addend -= 1;
2127 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 2128 break;
2129 case 1:
2130 if (howto->pc_relative)
2131 addend -= 2;
2132 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 2133 break;
2134 case 2:
2135 if (howto->pc_relative)
2136 addend -= 4;
2137 bfd_put_32 (input_bfd, addend, where);
2138 break;
2139 }
f8df10f4 2140 }
0e1862bb 2141 else if (!bfd_link_relocatable (info)
1f85278f 2142 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 2143 {
2144 /* Relocate against local STT_GNU_IFUNC symbol. */
0afcef53
L		 2145 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd, rel,
2146 FALSE);
c25bc9fc
L		 2147 if (h == NULL)
2148 abort ();
2149
23209a78 2150 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2151 h->root.u.def.value = sym->st_value;
2152 h->root.u.def.section = sec;
2153 }
252b5132
RH		 2154 }
2155 else
2156 {
3d540e93 2157 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2158 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 2159
b2a8e766
AM		 2160 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2161 r_symndx, symtab_hdr, sym_hashes,
2162 h, sec, relocation,
62d887d4 2163 unresolved_reloc, warned, ignored);
1788fc08 2164 st_size = h->size;
252b5132
RH		 2165 }
2166
dbaa2011 2167 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2168 {
2169 _bfd_clear_contents (howto, input_bfd, input_section,
2170 contents + rel->r_offset);
2171 wrel->r_offset = rel->r_offset;
2172 wrel->r_info = 0;
2173 wrel->r_addend = 0;
2174
2175 /* For ld -r, remove relocations in debug sections against
2176 sections defined in discarded sections. Not done for
2177 eh_frame editing code expects to be present. */
2178 if (bfd_link_relocatable (info)
2179 && (input_section->flags & SEC_DEBUGGING))
2180 wrel--;
2181
2182 continue;
2183 }
9635fe29 2184
0e1862bb 2185 if (bfd_link_relocatable (info))
2d5da473
L		 2186 {
2187 if (wrel != rel)
2188 *wrel = *rel;
2189 continue;
2190 }
ab96bf03 2191
0afcef53 2192 eh = (struct elf_x86_link_hash_entry *) h;
ee2fdd6f 2193
cbe950e9
L		 2194 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2195 it here if it is defined in a non-shared object. */
2196 if (h != NULL
2197 && h->type == STT_GNU_IFUNC
2198 && h->def_regular)
2199 {
ee2fdd6f 2200 asection *gotplt, *base_got;
cbe950e9 2201 bfd_vma plt_index;
4c544807 2202 const char *name;
cbe950e9 2203
97dc35c8
L		 2204 if ((input_section->flags & SEC_ALLOC) == 0)
2205 {
2206 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2207 sections because such sections are not SEC_ALLOC and
2208 thus ld.so will not process them. */
2209 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2210 continue;
97dc35c8
L		 2211 abort ();
2212 }
cbe950e9
L		 2213
2214 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 2215 if (htab->elf.splt != NULL)
cbe950e9 2216 {
ee2fdd6f
L		 2217 if (htab->plt_second != NULL)
2218 {
2219 resolved_plt = htab->plt_second;
2220 plt_offset = eh->plt_second.offset;
2221 }
2222 else
2223 {
2224 resolved_plt = htab->elf.splt;
2225 plt_offset = h->plt.offset;
2226 }
6de2ae4a 2227 gotplt = htab->elf.sgotplt;
cbe950e9
L		 2228 }
2229 else
2230 {
ee2fdd6f
L		 2231 resolved_plt = htab->elf.iplt;
2232 plt_offset = h->plt.offset;
6de2ae4a 2233 gotplt = htab->elf.igotplt;
cbe950e9
L		 2234 }
2235
cbe950e9
L		 2236 switch (r_type)
2237 {
2238 default:
233cc9c1 2239 break;
cbe950e9
L		 2240
2241 case R_386_GOT32:
02a86693 2242 case R_386_GOT32X:
6de2ae4a 2243 base_got = htab->elf.sgot;
cbe950e9
L		 2244 off = h->got.offset;
2245
7afd84dc 2246 if (base_got == NULL)
cbe950e9
L		 2247 abort ();
2248
7afd84dc 2249 if (off == (bfd_vma) -1)
cbe950e9 2250 {
7afd84dc
L		 2251 /* We can't use h->got.offset here to save state, or
2252 even just remember the offset, as finish_dynamic_symbol
2253 would use that as offset into .got. */
6bbec505 2254
233cc9c1
L		 2255 if (h->plt.offset == (bfd_vma) -1)
2256 abort ();
2257
6de2ae4a 2258 if (htab->elf.splt != NULL)
7afd84dc 2259 {
f604c2a2 2260 plt_index = (h->plt.offset / plt_entry_size
765e526c 2261 - htab->plt.has_plt0);
7afd84dc 2262 off = (plt_index + 3) * 4;
6de2ae4a 2263 base_got = htab->elf.sgotplt;
7afd84dc 2264 }
cbe950e9
L		 2265 else
2266 {
25e762b9 2267 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 2268 off = plt_index * 4;
6de2ae4a 2269 base_got = htab->elf.igotplt;
7afd84dc
L		 2270 }
2271
2272 if (h->dynindx == -1
2273 || h->forced_local
2274 || info->symbolic)
2275 {
2276 /* This references the local defitionion. We must
2277 initialize this entry in the global offset table.
2278 Since the offset must always be a multiple of 8,
2279 we use the least significant bit to record
2280 whether we have initialized it already.
2281
2282 When doing a dynamic link, we create a .rela.got
2283 relocation entry to initialize the value. This
2284 is done in the finish_dynamic_symbol routine. */
2285 if ((off & 1) != 0)
2286 off &= ~1;
2287 else
2288 {
2289 bfd_put_32 (output_bfd, relocation,
2290 base_got->contents + off);
2291 h->got.offset |= 1;
2292 }
cbe950e9 2293 }
cbe950e9 2294
7afd84dc 2295 relocation = off;
7afd84dc
L		 2296 }
2297 else
ca8c86ef
L		 2298 relocation = (base_got->output_section->vma
2299 + base_got->output_offset + off
2300 - gotplt->output_section->vma
2301 - gotplt->output_offset);
2302
2a568401
L		 2303 if (rel->r_offset > 1
2304 && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5
2305 && *(contents + rel->r_offset - 2) != 0x8d)
712ec279
L		 2306 {
2307 if (bfd_link_pic (info))
2308 goto disallow_got32;
2309
2310 /* Add the GOT base if there is no base register. */
2311 relocation += (gotplt->output_section->vma
2312 + gotplt->output_offset);
2313 }
2314 else if (htab->elf.splt == NULL)
2315 {
2316 /* Adjust for static executables. */
2317 relocation += gotplt->output_offset;
2318 }
0018b0a3 2319
cbe950e9 2320 goto do_relocation;
233cc9c1
L		 2321 }
2322
2323 if (h->plt.offset == (bfd_vma) -1)
2324 {
2325 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2326 if (r_type == R_386_32
2327 && (input_section->flags & SEC_CODE) == 0)
2328 goto do_ifunc_pointer;
2329 goto bad_ifunc_reloc;
2330 }
2331
ee2fdd6f
L		 2332 relocation = (resolved_plt->output_section->vma
2333 + resolved_plt->output_offset + plt_offset);
233cc9c1
L		 2334
2335 switch (r_type)
2336 {
2337 default:
2338bad_ifunc_reloc:
2339 if (h->root.root.string)
2340 name = h->root.root.string;
2341 else
2342 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2343 NULL);
4eca0228 2344 _bfd_error_handler
695344c0 2345 /* xgettext:c-format */
233cc9c1
L		 2346 (_("%B: relocation %s against STT_GNU_IFUNC "
2347 "symbol `%s' isn't supported"), input_bfd,
2348 howto->name, name);
2349 bfd_set_error (bfd_error_bad_value);
2350 return FALSE;
2351
2352 case R_386_32:
2353 /* Generate dynamic relcoation only when there is a
2354 non-GOT reference in a shared object. */
2355 if ((bfd_link_pic (info) && h->non_got_ref)
2356 || h->plt.offset == (bfd_vma) -1)
2357 {
2358 Elf_Internal_Rela outrel;
2359 asection *sreloc;
2360 bfd_vma offset;
2361
2362do_ifunc_pointer:
2363 /* Need a dynamic relocation to get the real function
2364 adddress. */
2365 offset = _bfd_elf_section_offset (output_bfd,
2366 info,
2367 input_section,
2368 rel->r_offset);
2369 if (offset == (bfd_vma) -1
2370 || offset == (bfd_vma) -2)
2371 abort ();
2372
2373 outrel.r_offset = (input_section->output_section->vma
2374 + input_section->output_offset
2375 + offset);
2376
cf1070f1 2377 if (POINTER_LOCAL_IFUNC_P (info, h))
233cc9c1 2378 {
6322e5c5
L		 2379 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
2380 h->root.root.string,
2381 h->root.u.def.section->owner);
2382
233cc9c1
L		 2383 /* This symbol is resolved locally. */
2384 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
2385 bfd_put_32 (output_bfd,
2386 (h->root.u.def.value
2387 + h->root.u.def.section->output_section->vma
2388 + h->root.u.def.section->output_offset),
2389 contents + offset);
2390 }
2391 else
2392 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2393
2394 /* Dynamic relocations are stored in
2395 1. .rel.ifunc section in PIC object.
2396 2. .rel.got section in dynamic executable.
2397 3. .rel.iplt section in static executable. */
2398 if (bfd_link_pic (info))
2399 sreloc = htab->elf.irelifunc;
2400 else if (htab->elf.splt != NULL)
2401 sreloc = htab->elf.srelgot;
2402 else
2403 sreloc = htab->elf.irelplt;
2404 elf_append_rel (output_bfd, sreloc, &outrel);
2405
2406 /* If this reloc is against an external symbol, we
2407 do not want to fiddle with the addend. Otherwise,
2408 we need to include the symbol value so that it
2409 becomes an addend for the dynamic reloc. For an
2410 internal symbol, we have updated addend. */
2411 continue;
2412 }
2413 /* FALLTHROUGH */
2414 case R_386_PC32:
2415 case R_386_PLT32:
2416 goto do_relocation;
cbe950e9
L		 2417
2418 case R_386_GOTOFF:
2419 relocation -= (gotplt->output_section->vma
2420 + gotplt->output_offset);
2421 goto do_relocation;
2422 }
2423 }
2424
aec6b87e 2425 resolved_to_zero = (eh != NULL
c5bce5c6 2426 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2427
252b5132
RH		 2428 switch (r_type)
2429 {
02a86693
L		 2430 case R_386_GOT32X:
2431 /* Avoid optimizing _DYNAMIC since ld.so may use its
2432 link-time address. */
2433 if (h == htab->elf.hdynamic)
2434 goto r_386_got32;
2435
2436 if (bfd_link_pic (info))
2437 {
2438 /* It is OK to convert mov to lea and convert indirect
2439 branch to direct branch. It is OK to convert adc,
2440 add, and, cmp, or, sbb, sub, test, xor only when PIC
2441 is false. */
02e2aef8
L		 2442 unsigned int opcode, addend;
2443 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
2444 if (addend != 0)
2445 goto r_386_got32;
2446 opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
02a86693
L		 2447 if (opcode != 0x8b && opcode != 0xff)
2448 goto r_386_got32;
2449 }
2450
2451 /* Resolve "mov GOT[(%reg)], %reg",
2452 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
2453 and "binop foo@GOT[(%reg)], %reg". */
2454 if (h == NULL
2455 || (h->plt.offset == (bfd_vma) -1
2456 && h->got.offset == (bfd_vma) -1)
2457 || htab->elf.sgotplt == NULL)
2458 abort ();
2459
2460 offplt = (htab->elf.sgotplt->output_section->vma
2461 + htab->elf.sgotplt->output_offset);
2462
2463 /* It is relative to .got.plt section. */
2464 if (h->got.offset != (bfd_vma) -1)
32875eb1
L		 2465 /* Use GOT entry. Mask off the least significant bit in
2466 GOT offset which may be set by R_386_GOT32 processing
2467 below. */
02a86693
L		 2468 relocation = (htab->elf.sgot->output_section->vma
2469 + htab->elf.sgot->output_offset
32875eb1 2470 + (h->got.offset & ~1) - offplt);
02a86693
L		 2471 else
2472 /* Use GOTPLT entry. */
f604c2a2 2473 relocation = (h->plt.offset / plt_entry_size
765e526c 2474 - htab->plt.has_plt0 + 3) * 4;
02a86693
L		 2475
2476 if (!bfd_link_pic (info))
2477 {
2478 /* If not PIC, add the .got.plt section address for
a3718e9e 2479 baseless addressing. */
02a86693 2480 unsigned int modrm;
02e2aef8 2481 modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
02a86693
L		 2482 if ((modrm & 0xc7) == 0x5)
2483 relocation += offplt;
2484 }
2485
2486 unresolved_reloc = FALSE;
2487 break;
2488
252b5132 2489 case R_386_GOT32:
02a86693 2490r_386_got32:
252b5132
RH		 2491 /* Relocation is to the entry for this symbol in the global
2492 offset table. */
6de2ae4a 2493 if (htab->elf.sgot == NULL)
ffb2e45b 2494 abort ();
252b5132 2495
e133d005 2496 relative_reloc = FALSE;
252b5132
RH		 2497 if (h != NULL)
2498 {
252b5132 2499 off = h->got.offset;
2eba97c2 2500 if (RESOLVED_LOCALLY_P (info, h, htab))
252b5132 2501 {
2eba97c2
L		 2502 /* We must initialize this entry in the global offset
2503 table. Since the offset must always be a multiple
2504 of 4, we use the least significant bit to record
2505 whether we have initialized it already.
252b5132
RH		 2506
2507 When doing a dynamic link, we create a .rel.got
2508 relocation entry to initialize the value. This
2509 is done in the finish_dynamic_symbol routine. */
2510 if ((off & 1) != 0)
2511 off &= ~1;
2512 else
2513 {
2514 bfd_put_32 (output_bfd, relocation,
6de2ae4a 2515 htab->elf.sgot->contents + off);
252b5132 2516 h->got.offset |= 1;
e133d005 2517
f70656b2 2518 if (GENERATE_RELATIVE_RELOC_P (info, h))
e133d005
L		 2519 {
2520 /* PR ld/21402: If this symbol isn't dynamic
0dc9a308 2521 in PIC, generate R_386_RELATIVE here. */
e133d005
L		 2522 eh->no_finish_dynamic_symbol = 1;
2523 relative_reloc = TRUE;
2524 }
252b5132
RH		 2525 }
2526 }
8c694914 2527 else
b34976b6 2528 unresolved_reloc = FALSE;
252b5132
RH		 2529 }
2530 else
2531 {
ffb2e45b
AM		 2532 if (local_got_offsets == NULL)
2533 abort ();
252b5132
RH		 2534
2535 off = local_got_offsets[r_symndx];
2536
2537 /* The offset must always be a multiple of 4. We use
83be169b
AM		 2538 the least significant bit to record whether we have
2539 already generated the necessary reloc. */
252b5132
RH		 2540 if ((off & 1) != 0)
2541 off &= ~1;
2542 else
2543 {
6725bdbf 2544 bfd_put_32 (output_bfd, relocation,
6de2ae4a 2545 htab->elf.sgot->contents + off);
e133d005 2546 local_got_offsets[r_symndx] |= 1;
252b5132 2547
0e1862bb 2548 if (bfd_link_pic (info))
e133d005 2549 relative_reloc = TRUE;
252b5132 2550 }
252b5132
RH		 2551 }
2552
e133d005
L		 2553 if (relative_reloc)
2554 {
2555 asection *s;
2556 Elf_Internal_Rela outrel;
2557
2558 s = htab->elf.srelgot;
2559 if (s == NULL)
2560 abort ();
2561
2562 outrel.r_offset = (htab->elf.sgot->output_section->vma
2563 + htab->elf.sgot->output_offset
2564 + off);
2565 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2566 elf_append_rel (output_bfd, s, &outrel);
2567 }
2568
ffb2e45b
AM		 2569 if (off >= (bfd_vma) -2)
2570 abort ();
2571
74d7f0aa
L		 2572 relocation = (htab->elf.sgot->output_section->vma
2573 + htab->elf.sgot->output_offset + off);
2a568401
L		 2574 if (rel->r_offset > 1
2575 && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5
2576 && *(contents + rel->r_offset - 2) != 0x8d)
74d7f0aa
L		 2577 {
2578 if (bfd_link_pic (info))
2579 {
2580 /* For PIC, disallow R_386_GOT32 without a base
2a568401
L		 2581 register, except for "lea foo@GOT, %reg", since
2582 we don't know what the GOT base is. */
74d7f0aa
L		 2583 const char *name;
2584
712ec279 2585disallow_got32:
a5def14f 2586 if (h == NULL || h->root.root.string == NULL)
74d7f0aa
L		 2587 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2588 NULL);
2589 else
2590 name = h->root.root.string;
2591
4eca0228 2592 _bfd_error_handler
695344c0 2593 /* xgettext:c-format */
63a5468a
AM		 2594 (_("%B: direct GOT relocation %s against `%s'"
2595 " without base register can not be used"
2596 " when making a shared object"),
712ec279 2597 input_bfd, howto->name, name);
74d7f0aa
L		 2598 bfd_set_error (bfd_error_bad_value);
2599 return FALSE;
2600 }
2601 }
2602 else
2603 {
2604 /* Subtract the .got.plt section address only with a base
2605 register. */
2606 relocation -= (htab->elf.sgotplt->output_section->vma
2607 + htab->elf.sgotplt->output_offset);
2608 }
2609
252b5132
RH		 2610 break;
2611
2612 case R_386_GOTOFF:
2613 /* Relocation is relative to the start of the global offset
2614 table. */
2615
3d949995
L		 2616 /* Check to make sure it isn't a protected function or data
2617 symbol for shared library since it may not be local when
2618 used as function address or with copy relocation. We also
e3c0e327 2619 need to make sure that a symbol is referenced locally. */
0e1862bb 2620 if (!bfd_link_executable (info) && h)
90f487df 2621 {
41bed6dd
L		 2622 if (!h->def_regular)
2623 {
2624 const char *v;
2625
2626 switch (ELF_ST_VISIBILITY (h->other))
2627 {
2628 case STV_HIDDEN:
2629 v = _("hidden symbol");
2630 break;
2631 case STV_INTERNAL:
2632 v = _("internal symbol");
2633 break;
2634 case STV_PROTECTED:
2635 v = _("protected symbol");
2636 break;
2637 default:
2638 v = _("symbol");
2639 break;
2640 }
2641
4eca0228 2642 _bfd_error_handler
695344c0 2643 /* xgettext:c-format */
63a5468a
AM		 2644 (_("%B: relocation R_386_GOTOFF against undefined %s"
2645 " `%s' can not be used when making a shared object"),
41bed6dd
L		 2646 input_bfd, v, h->root.root.string);
2647 bfd_set_error (bfd_error_bad_value);
2648 return FALSE;
2649 }
6999821f 2650 else if (!SYMBOL_REFERENCES_LOCAL_P (info, h)
3d949995
L		 2651 && (h->type == STT_FUNC
2652 || h->type == STT_OBJECT)
41bed6dd
L		 2653 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2654 {
4eca0228 2655 _bfd_error_handler
695344c0 2656 /* xgettext:c-format */
63a5468a
AM		 2657 (_("%B: relocation R_386_GOTOFF against protected %s"
2658 " `%s' can not be used when making a shared object"),
3d949995
L		 2659 input_bfd,
2660 h->type == STT_FUNC ? "function" : "data",
2661 h->root.root.string);
41bed6dd
L		 2662 bfd_set_error (bfd_error_bad_value);
2663 return FALSE;
2664 }
90f487df
L		 2665 }
2666
8c37241b
JJ		 2667 /* Note that sgot is not involved in this
2668 calculation. We always want the start of .got.plt. If we
2669 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 2670 permitted by the ABI, we might have to change this
2671 calculation. */
6de2ae4a
L		 2672 relocation -= htab->elf.sgotplt->output_section->vma
2673 + htab->elf.sgotplt->output_offset;
252b5132
RH		 2674 break;
2675
2676 case R_386_GOTPC:
2677 /* Use global offset table as symbol value. */
6de2ae4a
L		 2678 relocation = htab->elf.sgotplt->output_section->vma
2679 + htab->elf.sgotplt->output_offset;
b34976b6 2680 unresolved_reloc = FALSE;
252b5132
RH		 2681 break;
2682
2683 case R_386_PLT32:
2684 /* Relocation is to the entry for this symbol in the
2685 procedure linkage table. */
2686
dd5724d5 2687 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 2688 without using the procedure linkage table. */
252b5132
RH		 2689 if (h == NULL)
2690 break;
2691
dd7e64d4
L		 2692 if ((h->plt.offset == (bfd_vma) -1
2693 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 2694 || htab->elf.splt == NULL)
252b5132
RH		 2695 {
2696 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 2697 happens when statically linking PIC code, or when
2698 using -Bsymbolic. */
252b5132
RH		 2699 break;
2700 }
2701
dd7e64d4
L		 2702 if (h->plt.offset != (bfd_vma) -1)
2703 {
ee2fdd6f
L		 2704 if (htab->plt_second != NULL)
2705 {
2706 resolved_plt = htab->plt_second;
2707 plt_offset = eh->plt_second.offset;
2708 }
2709 else
2710 {
2711 resolved_plt = htab->elf.splt;
2712 plt_offset = h->plt.offset;
2713 }
dd7e64d4
L		 2714 }
2715 else
2716 {
2717 resolved_plt = htab->plt_got;
2718 plt_offset = eh->plt_got.offset;
2719 }
2720
2721 relocation = (resolved_plt->output_section->vma
2722 + resolved_plt->output_offset
2723 + plt_offset);
b34976b6 2724 unresolved_reloc = FALSE;
252b5132
RH		 2725 break;
2726
1788fc08 2727 case R_386_SIZE32:
1788fc08
L		 2728 /* Set to symbol size. */
2729 relocation = st_size;
2730 /* Fall through. */
2731
252b5132
RH		 2732 case R_386_32:
2733 case R_386_PC32:
3348747a
NS		 2734 if ((input_section->flags & SEC_ALLOC) == 0
2735 || is_vxworks_tls)
ec338859
AM		 2736 break;
2737
aebcc8ff
L		 2738 if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
2739 FALSE, resolved_to_zero,
2740 (r_type == R_386_PC32)))
252b5132 2741 {
947216bf 2742 Elf_Internal_Rela outrel;
b34976b6 2743 bfd_boolean skip, relocate;
0c715baa 2744 asection *sreloc;
252b5132
RH		 2745
2746 /* When generating a shared object, these relocations
2747 are copied into the output file to be resolved at run
2748 time. */
2749
b34976b6
AM		 2750 skip = FALSE;
2751 relocate = FALSE;
252b5132 2752
c629eae0
JJ		 2753 outrel.r_offset =
2754 _bfd_elf_section_offset (output_bfd, info, input_section,
2755 rel->r_offset);
2756 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2757 skip = TRUE;
0bb2d96a 2758 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2759 skip = TRUE, relocate = TRUE;
252b5132
RH		 2760 outrel.r_offset += (input_section->output_section->vma
2761 + input_section->output_offset);
2762
2763 if (skip)
0bb2d96a 2764 memset (&outrel, 0, sizeof outrel);
e74399c4 2765 else if (COPY_INPUT_RELOC_P (info, h, r_type))
0bb2d96a 2766 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2767 else
2768 {
5a15f56f 2769 /* This symbol is local, or marked to become local. */
b34976b6 2770 relocate = TRUE;
5a15f56f 2771 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 2772 }
2773
cbe950e9 2774 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 2775
62d78908
L		 2776 if (sreloc == NULL || sreloc->contents == NULL)
2777 {
2778 r = bfd_reloc_notsupported;
2779 goto check_relocation_error;
2780 }
0c715baa 2781
59d6ffb2 2782 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 2783
2784 /* If this reloc is against an external symbol, we do
2785 not want to fiddle with the addend. Otherwise, we
2786 need to include the symbol value so that it becomes
2787 an addend for the dynamic reloc. */
0f88be7a 2788 if (! relocate)
252b5132
RH		 2789 continue;
2790 }
252b5132
RH		 2791 break;
2792
37e55690 2793 case R_386_TLS_IE:
0e1862bb 2794 if (!bfd_link_executable (info))
37e55690 2795 {
947216bf 2796 Elf_Internal_Rela outrel;
37e55690 2797 asection *sreloc;
37e55690
JJ		 2798
2799 outrel.r_offset = rel->r_offset
2800 + input_section->output_section->vma
2801 + input_section->output_offset;
2802 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2803 sreloc = elf_section_data (input_section)->sreloc;
2804 if (sreloc == NULL)
2805 abort ();
59d6ffb2 2806 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 2807 }
2808 /* Fall through */
2809
13ae64f3 2810 case R_386_TLS_GD:
67a4f2b7
AO		 2811 case R_386_TLS_GOTDESC:
2812 case R_386_TLS_DESC_CALL:
13ae64f3 2813 case R_386_TLS_IE_32:
37e55690 2814 case R_386_TLS_GOTIE:
13ae64f3
JJ		 2815 tls_type = GOT_UNKNOWN;
2816 if (h == NULL && local_got_offsets)
0afcef53 2817 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
13ae64f3 2818 else if (h != NULL)
0afcef53 2819 tls_type = elf_x86_hash_entry(h)->tls_type;
37e55690
JJ		 2820 if (tls_type == GOT_TLS_IE)
2821 tls_type = GOT_TLS_IE_NEG;
142411ca 2822
419414ea 2823 r_type_tls = r_type;
142411ca
L		 2824 if (! elf_i386_tls_transition (info, input_bfd,
2825 input_section, contents,
2826 symtab_hdr, sym_hashes,
419414ea 2827 &r_type_tls, tls_type, rel,
bedfd056 2828 relend, h, r_symndx, TRUE))
142411ca 2829 return FALSE;
13ae64f3 2830
419414ea 2831 if (r_type_tls == R_386_TLS_LE_32)
13ae64f3 2832 {
82e51918 2833 BFD_ASSERT (! unresolved_reloc);
419414ea 2834 if (r_type == R_386_TLS_GD)
13ae64f3 2835 {
142411ca 2836 unsigned int type;
13ae64f3
JJ		 2837 bfd_vma roff;
2838
2839 /* GD->LE transition. */
6eaa7fb5 2840 type = *(contents + rel->r_offset - 2);
13ae64f3
JJ		 2841 if (type == 0x04)
2842 {
6eaa7fb5
L		 2843 /* Change
2844 leal foo@tlsgd(,%ebx,1), %eax
2845 call ___tls_get_addr@PLT
2846 into:
2847 movl %gs:0, %eax
2848 subl $foo@tpoff, %eax
13ae64f3 2849 (6 byte form of subl). */
142411ca 2850 roff = rel->r_offset + 5;
13ae64f3
JJ		 2851 }
2852 else
2853 {
6eaa7fb5
L		 2854 /* Change
2855 leal foo@tlsgd(%ebx), %eax
2856 call ___tls_get_addr@PLT
2857 nop
2858 or
2859 leal foo@tlsgd(%reg), %eax
2860 call *___tls_get_addr@GOT(%reg)
2861 which may be converted to
2862 addr32 call ___tls_get_addr
2863 into:
2864 movl %gs:0, %eax; subl $foo@tpoff, %eax
142411ca 2865 (6 byte form of subl). */
142411ca 2866 roff = rel->r_offset + 6;
13ae64f3 2867 }
6eaa7fb5
L		 2868 memcpy (contents + roff - 8,
2869 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
eb4ff4d6 2870 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 2871 contents + roff);
6eaa7fb5 2872 /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */
13ae64f3 2873 rel++;
60f2e42e 2874 wrel++;
13ae64f3
JJ		 2875 continue;
2876 }
419414ea 2877 else if (r_type == R_386_TLS_GOTDESC)
67a4f2b7
AO		 2878 {
2879 /* GDesc -> LE transition.
2880 It's originally something like:
2881 leal x@tlsdesc(%ebx), %eax
2882
2883 leal x@ntpoff, %eax
2884
2885 Registers other than %eax may be set up here. */
2886
142411ca 2887 unsigned int val;
67a4f2b7
AO		 2888 bfd_vma roff;
2889
67a4f2b7 2890 roff = rel->r_offset;
67a4f2b7 2891 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 2892
2893 /* Now modify the instruction as appropriate. */
2894 /* aoliva FIXME: remove the above and xor the byte
2895 below with 0x86. */
2896 bfd_put_8 (output_bfd, val ^ 0x86,
2897 contents + roff - 1);
eb4ff4d6 2898 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 2899 contents + roff);
2900 continue;
2901 }
419414ea 2902 else if (r_type == R_386_TLS_DESC_CALL)
67a4f2b7
AO		 2903 {
2904 /* GDesc -> LE transition.
2905 It's originally:
2906 call *(%eax)
2907 Turn it into:
142411ca 2908 xchg %ax,%ax */
67a4f2b7 2909
67a4f2b7 2910 bfd_vma roff;
6bbec505 2911
67a4f2b7 2912 roff = rel->r_offset;
10efb593 2913 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 2914 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
2915 continue;
2916 }
419414ea 2917 else if (r_type == R_386_TLS_IE)
13ae64f3 2918 {
142411ca 2919 unsigned int val;
13ae64f3
JJ		 2920
2921 /* IE->LE transition:
37e55690
JJ		 2922 Originally it can be one of:
2923 movl foo, %eax
2924 movl foo, %reg
2925 addl foo, %reg
2926 We change it into:
2927 movl $foo, %eax
2928 movl $foo, %reg
2929 addl $foo, %reg. */
37e55690 2930 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 2931 if (val == 0xa1)
2932 {
2933 /* movl foo, %eax. */
55fd94b0
AM		 2934 bfd_put_8 (output_bfd, 0xb8,
2935 contents + rel->r_offset - 1);
37e55690 2936 }
299bf759 2937 else
37e55690 2938 {
142411ca
L		 2939 unsigned int type;
2940
55fd94b0
AM		 2941 type = bfd_get_8 (input_bfd,
2942 contents + rel->r_offset - 2);
299bf759 2943 switch (type)
26e41594 2944 {
299bf759
L		 2945 case 0x8b:
2946 /* movl */
299bf759
L		 2947 bfd_put_8 (output_bfd, 0xc7,
2948 contents + rel->r_offset - 2);
2949 bfd_put_8 (output_bfd,
2950 0xc0 | ((val >> 3) & 7),
2951 contents + rel->r_offset - 1);
2952 break;
2953 case 0x03:
2954 /* addl */
299bf759
L		 2955 bfd_put_8 (output_bfd, 0x81,
2956 contents + rel->r_offset - 2);
2957 bfd_put_8 (output_bfd,
2958 0xc0 | ((val >> 3) & 7),
2959 contents + rel->r_offset - 1);
2960 break;
2961 default:
2962 BFD_FAIL ();
2963 break;
26e41594 2964 }
37e55690 2965 }
eb4ff4d6 2966 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 2967 contents + rel->r_offset);
2968 continue;
2969 }
2970 else
2971 {
2972 unsigned int val, type;
2973
2974 /* {IE_32,GOTIE}->LE transition:
2975 Originally it can be one of:
13ae64f3 2976 subl foo(%reg1), %reg2
13ae64f3 2977 movl foo(%reg1), %reg2
37e55690 2978 addl foo(%reg1), %reg2
13ae64f3
JJ		 2979 We change it into:
2980 subl $foo, %reg2
37e55690
JJ		 2981 movl $foo, %reg2 (6 byte form)
2982 addl $foo, %reg2. */
13ae64f3
JJ		 2983 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2984 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 2985 if (type == 0x8b)
2986 {
2987 /* movl */
13ae64f3
JJ		 2988 bfd_put_8 (output_bfd, 0xc7,
2989 contents + rel->r_offset - 2);
2990 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2991 contents + rel->r_offset - 1);
2992 }
2993 else if (type == 0x2b)
2994 {
2995 /* subl */
13ae64f3
JJ		 2996 bfd_put_8 (output_bfd, 0x81,
2997 contents + rel->r_offset - 2);
2998 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
2999 contents + rel->r_offset - 1);
3000 }
37e55690
JJ		 3001 else if (type == 0x03)
3002 {
3003 /* addl */
3004 bfd_put_8 (output_bfd, 0x81,
3005 contents + rel->r_offset - 2);
3006 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3007 contents + rel->r_offset - 1);
3008 }
13ae64f3
JJ		 3009 else
3010 BFD_FAIL ();
419414ea 3011 if (r_type == R_386_TLS_GOTIE)
eb4ff4d6 3012 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3013 contents + rel->r_offset);
3014 else
eb4ff4d6 3015 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3016 contents + rel->r_offset);
13ae64f3
JJ		 3017 continue;
3018 }
3019 }
3020
6de2ae4a 3021 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3022 abort ();
3023
3024 if (h != NULL)
67a4f2b7
AO		 3025 {
3026 off = h->got.offset;
0afcef53 3027 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 3028 }
13ae64f3
JJ		 3029 else
3030 {
3031 if (local_got_offsets == NULL)
3032 abort ();
3033
3034 off = local_got_offsets[r_symndx];
67a4f2b7 3035 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 3036 }
3037
3038 if ((off & 1) != 0)
3039 off &= ~1;
26e41594 3040 else
13ae64f3 3041 {
947216bf 3042 Elf_Internal_Rela outrel;
91d6fa6a 3043 int dr_type;
67a4f2b7 3044 asection *sreloc;
13ae64f3 3045
6de2ae4a 3046 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 3047 abort ();
3048
67a4f2b7
AO		 3049 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3050
3051 if (GOT_TLS_GDESC_P (tls_type))
3052 {
59d6ffb2 3053 bfd_byte *loc;
67a4f2b7
AO		 3054 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3055 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 3056 <= htab->elf.sgotplt->size);
3057 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3058 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3059 + offplt
3060 + htab->sgotplt_jump_table_size);
6de2ae4a 3061 sreloc = htab->elf.srelplt;
67a4f2b7 3062 loc = sreloc->contents;
765e526c 3063 loc += (htab->next_tls_desc_index++
5ae0bfb6 3064 * sizeof (Elf32_External_Rel));
67a4f2b7 3065 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 3066 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 3067 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3068 if (indx == 0)
3069 {
3070 BFD_ASSERT (! unresolved_reloc);
3071 bfd_put_32 (output_bfd,
0afcef53 3072 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3073 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3074 + htab->sgotplt_jump_table_size + 4);
3075 }
3076 else
3077 {
3078 bfd_put_32 (output_bfd, 0,
6de2ae4a 3079 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3080 + htab->sgotplt_jump_table_size + 4);
3081 }
3082 }
3083
6de2ae4a 3084 sreloc = htab->elf.srelgot;
67a4f2b7 3085
6de2ae4a
L		 3086 outrel.r_offset = (htab->elf.sgot->output_section->vma
3087 + htab->elf.sgot->output_offset + off);
13ae64f3 3088
67a4f2b7 3089 if (GOT_TLS_GD_P (tls_type))
13ae64f3 3090 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 3091 else if (GOT_TLS_GDESC_P (tls_type))
3092 goto dr_done;
37e55690
JJ		 3093 else if (tls_type == GOT_TLS_IE_POS)
3094 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 3095 else
3096 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 3097
37e55690 3098 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6 3099 bfd_put_32 (output_bfd,
0afcef53 3100 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3101 htab->elf.sgot->contents + off);
37e55690 3102 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 3103 bfd_put_32 (output_bfd,
0afcef53 3104 _bfd_x86_elf_dtpoff_base (info) - relocation,
6de2ae4a 3105 htab->elf.sgot->contents + off);
67a4f2b7 3106 else if (dr_type != R_386_TLS_DESC)
c366c25e 3107 bfd_put_32 (output_bfd, 0,
6de2ae4a 3108 htab->elf.sgot->contents + off);
13ae64f3 3109 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 3110
59d6ffb2 3111 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 3112
67a4f2b7 3113 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 3114 {
3115 if (indx == 0)
3116 {
82e51918 3117 BFD_ASSERT (! unresolved_reloc);
13ae64f3 3118 bfd_put_32 (output_bfd,
0afcef53 3119 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3120 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3121 }
3122 else
3123 {
3124 bfd_put_32 (output_bfd, 0,
6de2ae4a 3125 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3126 outrel.r_info = ELF32_R_INFO (indx,
3127 R_386_TLS_DTPOFF32);
3128 outrel.r_offset += 4;
59d6ffb2 3129 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 3130 }
3131 }
37e55690
JJ		 3132 else if (tls_type == GOT_TLS_IE_BOTH)
3133 {
3134 bfd_put_32 (output_bfd,
eb4ff4d6 3135 (indx == 0
0afcef53 3136 ? relocation - _bfd_x86_elf_dtpoff_base (info)
eb4ff4d6 3137 : 0),
6de2ae4a 3138 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 3139 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3140 outrel.r_offset += 4;
59d6ffb2 3141 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 3142 }
13ae64f3 3143
67a4f2b7 3144 dr_done:
13ae64f3
JJ		 3145 if (h != NULL)
3146 h->got.offset |= 1;
3147 else
3148 local_got_offsets[r_symndx] |= 1;
3149 }
3150
67a4f2b7
AO		 3151 if (off >= (bfd_vma) -2
3152 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 3153 abort ();
419414ea
L		 3154 if (r_type_tls == R_386_TLS_GOTDESC
3155 || r_type_tls == R_386_TLS_DESC_CALL)
67a4f2b7
AO		 3156 {
3157 relocation = htab->sgotplt_jump_table_size + offplt;
3158 unresolved_reloc = FALSE;
3159 }
419414ea 3160 else if (r_type_tls == r_type)
13ae64f3 3161 {
6de2ae4a
L		 3162 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
3163 + htab->elf.sgotplt->output_offset;
3164 relocation = htab->elf.sgot->output_section->vma
3165 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 3166 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3167 && tls_type == GOT_TLS_IE_BOTH)
3168 relocation += 4;
3169 if (r_type == R_386_TLS_IE)
8c37241b 3170 relocation += g_o_t;
b34976b6 3171 unresolved_reloc = FALSE;
13ae64f3 3172 }
419414ea 3173 else if (r_type == R_386_TLS_GD)
13ae64f3
JJ		 3174 {
3175 unsigned int val, type;
3176 bfd_vma roff;
3177
3178 /* GD->IE transition. */
6eaa7fb5
L		 3179 type = *(contents + rel->r_offset - 2);
3180 val = *(contents + rel->r_offset - 1);
13ae64f3
JJ		 3181 if (type == 0x04)
3182 {
6eaa7fb5
L		 3183 /* Change
3184 leal foo@tlsgd(,%ebx,1), %eax
3185 call ___tls_get_addr@PLT
3186 into:
3187 movl %gs:0, %eax
3188 subl $foo@gottpoff(%ebx), %eax. */
13ae64f3 3189 val >>= 3;
142411ca 3190 roff = rel->r_offset - 3;
13ae64f3
JJ		 3191 }
3192 else
3193 {
6eaa7fb5
L		 3194 /* Change
3195 leal foo@tlsgd(%ebx), %eax
3196 call ___tls_get_addr@PLT
3197 nop
3198 or
3199 leal foo@tlsgd(%reg), %eax
3200 call *___tls_get_addr@GOT(%reg)
3201 which may be converted to
3202 addr32 call ___tls_get_addr
3203 into:
3204 movl %gs:0, %eax;
3205 subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 3206 roff = rel->r_offset - 2;
3207 }
3208 memcpy (contents + roff,
3209 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3210 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 3211 /* If foo is used only with foo@gotntpoff(%reg) and
3212 foo@indntpoff, but not with foo@gottpoff(%reg), change
3213 subl $foo@gottpoff(%reg), %eax
3214 into:
3215 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 3216 if (tls_type == GOT_TLS_IE_POS)
3217 contents[roff + 6] = 0x03;
8c37241b 3218 bfd_put_32 (output_bfd,
6de2ae4a
L		 3219 htab->elf.sgot->output_section->vma
3220 + htab->elf.sgot->output_offset + off
3221 - htab->elf.sgotplt->output_section->vma
3222 - htab->elf.sgotplt->output_offset,
13ae64f3 3223 contents + roff + 8);
6eaa7fb5 3224 /* Skip R_386_PLT32 and R_386_GOT32X. */
13ae64f3 3225 rel++;
60f2e42e 3226 wrel++;
13ae64f3
JJ		 3227 continue;
3228 }
419414ea 3229 else if (r_type == R_386_TLS_GOTDESC)
67a4f2b7
AO		 3230 {
3231 /* GDesc -> IE transition.
3232 It's originally something like:
3233 leal x@tlsdesc(%ebx), %eax
3234
3235 Change it to:
142411ca 3236 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 3237 or:
3238 movl x@gottpoff(%ebx), %eax # before negl %eax
3239
3240 Registers other than %eax may be set up here. */
3241
67a4f2b7
AO		 3242 bfd_vma roff;
3243
3244 /* First, make sure it's a leal adding ebx to a 32-bit
3245 offset into any register, although it's probably
3246 almost always going to be eax. */
3247 roff = rel->r_offset;
67a4f2b7
AO		 3248
3249 /* Now modify the instruction as appropriate. */
3250 /* To turn a leal into a movl in the form we use it, it
3251 suffices to change the first byte from 0x8d to 0x8b.
3252 aoliva FIXME: should we decide to keep the leal, all
3253 we have to do is remove the statement below, and
3254 adjust the relaxation of R_386_TLS_DESC_CALL. */
3255 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3256
3257 if (tls_type == GOT_TLS_IE_BOTH)
3258 off += 4;
3259
3260 bfd_put_32 (output_bfd,
6de2ae4a
L		 3261 htab->elf.sgot->output_section->vma
3262 + htab->elf.sgot->output_offset + off
3263 - htab->elf.sgotplt->output_section->vma
3264 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 3265 contents + roff);
3266 continue;
3267 }
419414ea 3268 else if (r_type == R_386_TLS_DESC_CALL)
67a4f2b7
AO		 3269 {
3270 /* GDesc -> IE transition.
3271 It's originally:
3272 call *(%eax)
3273
3274 Change it to:
142411ca 3275 xchg %ax,%ax
67a4f2b7
AO		 3276 or
3277 negl %eax
3278 depending on how we transformed the TLS_GOTDESC above.
3279 */
3280
67a4f2b7
AO		 3281 bfd_vma roff;
3282
67a4f2b7 3283 roff = rel->r_offset;
67a4f2b7
AO		 3284
3285 /* Now modify the instruction as appropriate. */
3286 if (tls_type != GOT_TLS_IE_NEG)
3287 {
10efb593
L		 3288 /* xchg %ax,%ax */
3289 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3290 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3291 }
3292 else
3293 {
3294 /* negl %eax */
3295 bfd_put_8 (output_bfd, 0xf7, contents + roff);
3296 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3297 }
3298
3299 continue;
3300 }
3301 else
3302 BFD_ASSERT (FALSE);
13ae64f3
JJ		 3303 break;
3304
3305 case R_386_TLS_LDM:
142411ca
L		 3306 if (! elf_i386_tls_transition (info, input_bfd,
3307 input_section, contents,
3308 symtab_hdr, sym_hashes,
3309 &r_type, GOT_UNKNOWN, rel,
bedfd056 3310 relend, h, r_symndx, TRUE))
142411ca 3311 return FALSE;
13ae64f3 3312
142411ca
L		 3313 if (r_type != R_386_TLS_LDM)
3314 {
6eaa7fb5
L		 3315 /* LD->LE transition. Change
3316 leal foo@tlsldm(%ebx) %eax
3317 call ___tls_get_addr@PLT
3318 into:
3319 movl %gs:0, %eax
3320 nop
3321 leal 0(%esi,1), %esi
3322 or change
3323 leal foo@tlsldm(%reg) %eax
3324 call *___tls_get_addr@GOT(%reg)
3325 which may be converted to
3326 addr32 call ___tls_get_addr
3327 into:
3328 movl %gs:0, %eax
3329 leal 0(%esi), %esi */
142411ca 3330 BFD_ASSERT (r_type == R_386_TLS_LE_32);
6eaa7fb5
L		 3331 if (*(contents + rel->r_offset + 4) == 0xff
3332 || *(contents + rel->r_offset + 4) == 0x67)
3333 memcpy (contents + rel->r_offset - 2,
3334 "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12);
3335 else
3336 memcpy (contents + rel->r_offset - 2,
3337 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 3338 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 3339 rel++;
60f2e42e 3340 wrel++;
13ae64f3
JJ		 3341 continue;
3342 }
3343
6de2ae4a 3344 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3345 abort ();
3346
0afcef53 3347 off = htab->tls_ld_or_ldm_got.offset;
13ae64f3
JJ		 3348 if (off & 1)
3349 off &= ~1;
3350 else
3351 {
947216bf 3352 Elf_Internal_Rela outrel;
13ae64f3 3353
6de2ae4a 3354 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 3355 abort ();
3356
6de2ae4a
L		 3357 outrel.r_offset = (htab->elf.sgot->output_section->vma
3358 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 3359
3360 bfd_put_32 (output_bfd, 0,
6de2ae4a 3361 htab->elf.sgot->contents + off);
13ae64f3 3362 bfd_put_32 (output_bfd, 0,
6de2ae4a 3363 htab->elf.sgot->contents + off + 4);
13ae64f3 3364 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 3365 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
0afcef53 3366 htab->tls_ld_or_ldm_got.offset |= 1;
13ae64f3 3367 }
6de2ae4a
L		 3368 relocation = htab->elf.sgot->output_section->vma
3369 + htab->elf.sgot->output_offset + off
3370 - htab->elf.sgotplt->output_section->vma
3371 - htab->elf.sgotplt->output_offset;
b34976b6 3372 unresolved_reloc = FALSE;
13ae64f3
JJ		 3373 break;
3374
3375 case R_386_TLS_LDO_32:
0e1862bb
L		 3376 if (!bfd_link_executable (info)
3377 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3378 relocation -= _bfd_x86_elf_dtpoff_base (info);
13ae64f3
JJ		 3379 else
3380 /* When converting LDO to LE, we must negate. */
eb4ff4d6 3381 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 3382 break;
3383
3384 case R_386_TLS_LE_32:
13ae64f3 3385 case R_386_TLS_LE:
0e1862bb 3386 if (!bfd_link_executable (info))
37e55690 3387 {
947216bf 3388 Elf_Internal_Rela outrel;
37e55690 3389 asection *sreloc;
37e55690
JJ		 3390
3391 outrel.r_offset = rel->r_offset
3392 + input_section->output_section->vma
3393 + input_section->output_offset;
3394 if (h != NULL && h->dynindx != -1)
3395 indx = h->dynindx;
3396 else
3397 indx = 0;
3398 if (r_type == R_386_TLS_LE_32)
3399 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
3400 else
3401 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3402 sreloc = elf_section_data (input_section)->sreloc;
3403 if (sreloc == NULL)
3404 abort ();
59d6ffb2 3405 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3406 if (indx)
3407 continue;
3408 else if (r_type == R_386_TLS_LE_32)
0afcef53 3409 relocation = _bfd_x86_elf_dtpoff_base (info) - relocation;
37e55690 3410 else
0afcef53 3411 relocation -= _bfd_x86_elf_dtpoff_base (info);
37e55690
JJ		 3412 }
3413 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 3414 relocation = elf_i386_tpoff (info, relocation);
37e55690 3415 else
eb4ff4d6 3416 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 3417 break;
3418
252b5132
RH		 3419 default:
3420 break;
3421 }
3422
239e1f3a
AM		 3423 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3424 because such sections are not SEC_ALLOC and thus ld.so will
3425 not process them. */
8c694914 3426 if (unresolved_reloc
239e1f3a 3427 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3428 && h->def_dynamic)
3429 && _bfd_elf_section_offset (output_bfd, info, input_section,
3430 rel->r_offset) != (bfd_vma) -1)
6a30718d 3431 {
4eca0228 3432 _bfd_error_handler
695344c0 3433 /* xgettext:c-format */
d42c267e 3434 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3435 input_bfd,
3436 input_section,
d42c267e 3437 rel->r_offset,
843fe662 3438 howto->name,
6a30718d 3439 h->root.root.string);
b34976b6 3440 return FALSE;
6a30718d 3441 }
83be169b 3442
cbe950e9 3443do_relocation:
252b5132
RH		 3444 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3445 contents, rel->r_offset,
55fd94b0 3446 relocation, 0);
252b5132 3447
62d78908 3448check_relocation_error:
cf5c0c5b 3449 if (r != bfd_reloc_ok)
252b5132 3450 {
cf5c0c5b 3451 const char *name;
ffb2e45b 3452
cf5c0c5b
AM		 3453 if (h != NULL)
3454 name = h->root.root.string;
3455 else
3456 {
3457 name = bfd_elf_string_from_elf_section (input_bfd,
3458 symtab_hdr->sh_link,
3459 sym->st_name);
3460 if (name == NULL)
b34976b6 3461 return FALSE;
cf5c0c5b
AM		 3462 if (*name == '\0')
3463 name = bfd_section_name (input_bfd, sec);
3464 }
ffb2e45b 3465
cf5c0c5b 3466 if (r == bfd_reloc_overflow)
1a72702b
AM		 3467 (*info->callbacks->reloc_overflow)
3468 (info, (h ? &h->root : NULL), name, howto->name,
3469 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
cf5c0c5b
AM		 3470 else
3471 {
4eca0228 3472 _bfd_error_handler
695344c0 3473 /* xgettext:c-format */
d42c267e 3474 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
d003868e 3475 input_bfd, input_section,
d42c267e 3476 rel->r_offset, name, (int) r);
b34976b6 3477 return FALSE;
cf5c0c5b 3478 }
252b5132 3479 }
60f2e42e
L		 3480
3481 if (wrel != rel)
3482 *wrel = *rel;
3483 }
3484
3485 if (wrel != rel)
3486 {
3487 Elf_Internal_Shdr *rel_hdr;
3488 size_t deleted = rel - wrel;
3489
3490 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3491 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3492 if (rel_hdr->sh_size == 0)
3493 {
3494 /* It is too late to remove an empty reloc section. Leave
3495 one NONE reloc.
3496 ??? What is wrong with an empty section??? */
3497 rel_hdr->sh_size = rel_hdr->sh_entsize;
3498 deleted -= 1;
3499 }
3500 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3501 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3502 input_section->reloc_count -= deleted;
252b5132
RH		 3503 }
3504
b34976b6 3505 return TRUE;
252b5132
RH		 3506}
3507
3508/* Finish up dynamic symbol handling. We set the contents of various
3509 dynamic sections here. */
3510
b34976b6 3511static bfd_boolean
55fd94b0
AM		 3512elf_i386_finish_dynamic_symbol (bfd *output_bfd,
3513 struct bfd_link_info *info,
3514 struct elf_link_hash_entry *h,
3515 Elf_Internal_Sym *sym)
252b5132 3516{
0afcef53 3517 struct elf_x86_link_hash_table *htab;
25e762b9 3518 unsigned plt_entry_size;
0afcef53 3519 struct elf_x86_link_hash_entry *eh;
aec6b87e 3520 bfd_boolean local_undefweak;
ee2fdd6f 3521 bfd_boolean use_plt_second;
252b5132 3522
0afcef53 3523 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 3524 if (htab == NULL)
3525 return FALSE;
252b5132 3526
765e526c 3527 plt_entry_size = htab->plt.plt_entry_size;
25e762b9 3528
ee2fdd6f
L		 3529 /* Use the second PLT section only if there is .plt section. */
3530 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
3531
0afcef53 3532 eh = (struct elf_x86_link_hash_entry *) h;
e133d005
L		 3533 if (eh->no_finish_dynamic_symbol)
3534 abort ();
dd7e64d4 3535
aec6b87e
L		 3536 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3537 resolved undefined weak symbols in executable so that their
3538 references have value 0 at run-time. */
c5bce5c6 3539 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3540
252b5132
RH		 3541 if (h->plt.offset != (bfd_vma) -1)
3542 {
ee2fdd6f 3543 bfd_vma plt_index, plt_offset;
252b5132 3544 bfd_vma got_offset;
947216bf
AM		 3545 Elf_Internal_Rela rel;
3546 bfd_byte *loc;
ee2fdd6f 3547 asection *plt, *resolved_plt, *gotplt, *relplt;
cbe950e9
L		 3548
3549 /* When building a static executable, use .iplt, .igot.plt and
3550 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3551 if (htab->elf.splt != NULL)
cbe950e9 3552 {
6de2ae4a
L		 3553 plt = htab->elf.splt;
3554 gotplt = htab->elf.sgotplt;
3555 relplt = htab->elf.srelplt;
cbe950e9
L		 3556 }
3557 else
3558 {
6de2ae4a
L		 3559 plt = htab->elf.iplt;
3560 gotplt = htab->elf.igotplt;
3561 relplt = htab->elf.irelplt;
cbe950e9 3562 }
252b5132 3563
f3180fa9 3564 VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)
252b5132
RH		 3565
3566 /* Get the index in the procedure linkage table which
3567 corresponds to this symbol. This is the index of this symbol
3568 in all the symbols for which we are making plt entries. The
cbe950e9 3569 first entry in the procedure linkage table is reserved.
252b5132 3570
cbe950e9 3571 Get the offset into the .got table of the entry that
252b5132 3572 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 3573 The first three are reserved.
6bbec505 3574
cbe950e9
L		 3575 For static executables, we don't reserve anything. */
3576
6de2ae4a 3577 if (plt == htab->elf.splt)
cbe950e9 3578 {
f604c2a2 3579 got_offset = (h->plt.offset / plt_entry_size
765e526c 3580 - htab->plt.has_plt0);
e1f98742 3581 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 3582 }
3583 else
3584 {
e1f98742
L		 3585 got_offset = h->plt.offset / plt_entry_size;
3586 got_offset = got_offset * 4;
cbe950e9 3587 }
252b5132 3588
f604c2a2
L		 3589 /* Fill in the entry in the procedure linkage table and update
3590 the first slot. */
765e526c 3591 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
f604c2a2 3592 plt_entry_size);
ee2fdd6f
L		 3593
3594 if (use_plt_second)
3595 {
3596 const bfd_byte *plt_entry;
3597 if (bfd_link_pic (info))
765e526c 3598 plt_entry = htab->non_lazy_plt->pic_plt_entry;
ee2fdd6f 3599 else
765e526c 3600 plt_entry = htab->non_lazy_plt->plt_entry;
ee2fdd6f 3601 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c 3602 plt_entry, htab->non_lazy_plt->plt_entry_size);
ee2fdd6f
L		 3603
3604 resolved_plt = htab->plt_second;
3605 plt_offset = eh->plt_second.offset;
3606 }
3607 else
3608 {
3609 resolved_plt = plt;
3610 plt_offset = h->plt.offset;
3611 }
3612
0e1862bb 3613 if (! bfd_link_pic (info))
252b5132 3614 {
252b5132 3615 bfd_put_32 (output_bfd,
cbe950e9
L		 3616 (gotplt->output_section->vma
3617 + gotplt->output_offset
252b5132 3618 + got_offset),
ee2fdd6f 3619 resolved_plt->contents + plt_offset
765e526c 3620 + htab->plt.plt_got_offset);
eac338cf 3621
851b6fa1 3622 if (htab->target_os == is_vxworks)
eac338cf
PB		 3623 {
3624 int s, k, reloc_index;
3625
3626 /* Create the R_386_32 relocation referencing the GOT
3627 for this PLT entry. */
3628
3629 /* S: Current slot number (zero-based). */
765e526c
L		 3630 s = ((h->plt.offset - htab->plt.plt_entry_size)
3631 / htab->plt.plt_entry_size);
eac338cf 3632 /* K: Number of relocations for PLTResolve. */
0e1862bb 3633 if (bfd_link_pic (info))
eac338cf
PB		 3634 k = PLTRESOLVE_RELOCS_SHLIB;
3635 else
3636 k = PLTRESOLVE_RELOCS;
3637 /* Skip the PLTresolve relocations, and the relocations for
3638 the other PLT slots. */
3639 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
765e526c 3640 loc = (htab->srelplt2->contents + reloc_index
eac338cf
PB		 3641 * sizeof (Elf32_External_Rel));
3642
ee2fdd6f
L		 3643 rel.r_offset = (plt->output_section->vma
3644 + plt->output_offset
eac338cf 3645 + h->plt.offset + 2),
7325306f 3646 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3647 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3648
3649 /* Create the R_386_32 relocation referencing the beginning of
3650 the PLT for this GOT entry. */
6de2ae4a
L		 3651 rel.r_offset = (htab->elf.sgotplt->output_section->vma
3652 + htab->elf.sgotplt->output_offset
eac338cf 3653 + got_offset);
7325306f 3654 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 3655 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 3656 loc + sizeof (Elf32_External_Rel));
eac338cf 3657 }
252b5132
RH		 3658 }
3659 else
3660 {
252b5132 3661 bfd_put_32 (output_bfd, got_offset,
ee2fdd6f 3662 resolved_plt->contents + plt_offset
765e526c 3663 + htab->plt.plt_got_offset);
252b5132
RH		 3664 }
3665
aec6b87e
L		 3666 /* Fill in the entry in the global offset table. Leave the entry
3667 as zero for undefined weak symbol in PIE. No PLT relocation
3668 against undefined weak symbol in PIE. */
3669 if (!local_undefweak)
cbe950e9 3670 {
765e526c 3671 if (htab->plt.has_plt0)
f604c2a2
L		 3672 bfd_put_32 (output_bfd,
3673 (plt->output_section->vma
3674 + plt->output_offset
3675 + h->plt.offset
765e526c 3676 + htab->lazy_plt->plt_lazy_offset),
f604c2a2 3677 gotplt->contents + got_offset);
252b5132 3678
aec6b87e
L		 3679 /* Fill in the entry in the .rel.plt section. */
3680 rel.r_offset = (gotplt->output_section->vma
3681 + gotplt->output_offset
3682 + got_offset);
cf1070f1 3683 if (PLT_LOCAL_IFUNC_P (info, h))
aec6b87e 3684 {
6322e5c5
L		 3685 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
3686 h->root.root.string,
3687 h->root.u.def.section->owner);
3688
aec6b87e
L		 3689 /* If an STT_GNU_IFUNC symbol is locally defined, generate
3690 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
3691 in the .got.plt section. */
3692 bfd_put_32 (output_bfd,
3693 (h->root.u.def.value
3694 + h->root.u.def.section->output_section->vma
3695 + h->root.u.def.section->output_offset),
3696 gotplt->contents + got_offset);
3697 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3698 /* R_386_IRELATIVE comes last. */
3699 plt_index = htab->next_irelative_index--;
3700 }
3701 else
3702 {
3703 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
3704 plt_index = htab->next_jump_slot_index++;
3705 }
3706
3707 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
3708 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3709
f604c2a2
L		 3710 /* Don't fill the second and third slots in PLT entry for
3711 static executables nor without PLT0. */
765e526c 3712 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e
L		 3713 {
3714 bfd_put_32 (output_bfd,
3715 plt_index * sizeof (Elf32_External_Rel),
3716 plt->contents + h->plt.offset
765e526c 3717 + htab->lazy_plt->plt_reloc_offset);
f604c2a2
L		 3718 bfd_put_32 (output_bfd,
3719 - (h->plt.offset
765e526c 3720 + htab->lazy_plt->plt_plt_offset + 4),
f604c2a2 3721 (plt->contents + h->plt.offset
765e526c 3722 + htab->lazy_plt->plt_plt_offset));
aec6b87e 3723 }
e1f98742 3724 }
dd7e64d4
L		 3725 }
3726 else if (eh->plt_got.offset != (bfd_vma) -1)
3727 {
3728 bfd_vma got_offset, plt_offset;
3729 asection *plt, *got, *gotplt;
3730 const bfd_byte *got_plt_entry;
3731
dd7e64d4
L		 3732 /* Set the entry in the GOT procedure linkage table. */
3733 plt = htab->plt_got;
3734 got = htab->elf.sgot;
3735 gotplt = htab->elf.sgotplt;
3736 got_offset = h->got.offset;
3737
3738 if (got_offset == (bfd_vma) -1
3739 || plt == NULL
3740 || got == NULL
3741 || gotplt == NULL)
3742 abort ();
3743
3744 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 3745 if (! bfd_link_pic (info))
252b5132 3746 {
765e526c 3747 got_plt_entry = htab->non_lazy_plt->plt_entry;
dd7e64d4 3748 got_offset += got->output_section->vma + got->output_offset;
252b5132 3749 }
dd7e64d4
L		 3750 else
3751 {
765e526c 3752 got_plt_entry = htab->non_lazy_plt->pic_plt_entry;
dd7e64d4
L		 3753 got_offset += (got->output_section->vma
3754 + got->output_offset
3755 - gotplt->output_section->vma
3756 - gotplt->output_offset);
3757 }
3758
3759 plt_offset = eh->plt_got.offset;
3760 memcpy (plt->contents + plt_offset, got_plt_entry,
765e526c 3761 htab->non_lazy_plt->plt_entry_size);
dd7e64d4 3762 bfd_put_32 (output_bfd, got_offset,
f604c2a2 3763 (plt->contents + plt_offset
765e526c 3764 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 3765 }
3766
aec6b87e
L		 3767 if (!local_undefweak
3768 && !h->def_regular
dd7e64d4
L		 3769 && (h->plt.offset != (bfd_vma) -1
3770 || eh->plt_got.offset != (bfd_vma) -1))
3771 {
3772 /* Mark the symbol as undefined, rather than as defined in
3773 the .plt section. Leave the value if there were any
3774 relocations where pointer equality matters (this is a clue
3775 for the dynamic linker, to make function pointer
3776 comparisons work between an application and shared
3777 library), otherwise set it to zero. If a function is only
3778 called from a binary, there is no need to slow down
3779 shared libraries because of that. */
3780 sym->st_shndx = SHN_UNDEF;
3781 if (!h->pointer_equality_needed)
3782 sym->st_value = 0;
252b5132
RH		 3783 }
3784
aec6b87e
L		 3785 /* Don't generate dynamic GOT relocation against undefined weak
3786 symbol in executable. */
13ae64f3 3787 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 3788 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry(h)->tls_type)
3789 && (elf_x86_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
aec6b87e 3790 && !local_undefweak)
252b5132 3791 {
947216bf 3792 Elf_Internal_Rela rel;
233cc9c1 3793 asection *relgot = htab->elf.srelgot;
252b5132
RH		 3794
3795 /* This symbol has an entry in the global offset table. Set it
3796 up. */
3797
6de2ae4a 3798 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 3799 abort ();
252b5132 3800
6de2ae4a
L		 3801 rel.r_offset = (htab->elf.sgot->output_section->vma
3802 + htab->elf.sgot->output_offset
dc810e39 3803 + (h->got.offset & ~(bfd_vma) 1));
252b5132 3804
dd5724d5
AM		 3805 /* If this is a static link, or it is a -Bsymbolic link and the
3806 symbol is defined locally or was forced to be local because
3807 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 3808 The entry in the global offset table will already have been
3809 initialized in the relocate_section function. */
710ab287 3810 if (h->def_regular
0018b0a3
L		 3811 && h->type == STT_GNU_IFUNC)
3812 {
233cc9c1
L		 3813 if (h->plt.offset == (bfd_vma) -1)
3814 {
3815 /* STT_GNU_IFUNC is referenced without PLT. */
3816 if (htab->elf.splt == NULL)
3817 {
3818 /* use .rel[a].iplt section to store .got relocations
3819 in static executable. */
3820 relgot = htab->elf.irelplt;
3821 }
6999821f 3822 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 3823 {
6322e5c5
L		 3824 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
3825 h->root.root.string,
3826 h->root.u.def.section->owner);
3827
233cc9c1
L		 3828 bfd_put_32 (output_bfd,
3829 (h->root.u.def.value
3830 + h->root.u.def.section->output_section->vma
3831 + h->root.u.def.section->output_offset),
3832 htab->elf.sgot->contents + h->got.offset);
3833 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3834 }
3835 else
3836 goto do_glob_dat;
3837 }
3838 else if (bfd_link_pic (info))
710ab287
L		 3839 {
3840 /* Generate R_386_GLOB_DAT. */
3841 goto do_glob_dat;
3842 }
3843 else
3844 {
cd2b2c10 3845 asection *plt;
ee2fdd6f 3846 bfd_vma plt_offset;
cd2b2c10 3847
710ab287
L		 3848 if (!h->pointer_equality_needed)
3849 abort ();
3850
3851 /* For non-shared object, we can't use .got.plt, which
3852 contains the real function addres if we need pointer
3853 equality. We load the GOT entry with the PLT entry. */
ee2fdd6f
L		 3854 if (htab->plt_second != NULL)
3855 {
3856 plt = htab->plt_second;
3857 plt_offset = eh->plt_second.offset;
3858 }
3859 else
3860 {
3861 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
3862 plt_offset = h->plt.offset;
3863 }
710ab287
L		 3864 bfd_put_32 (output_bfd,
3865 (plt->output_section->vma
ee2fdd6f 3866 + plt->output_offset + plt_offset),
6de2ae4a 3867 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 3868 return TRUE;
3869 }
0018b0a3 3870 }
0e1862bb 3871 else if (bfd_link_pic (info)
6999821f 3872 && SYMBOL_REFERENCES_LOCAL_P (info, h))
dd5724d5 3873 {
6725bdbf 3874 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 3875 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3876 }
252b5132
RH		 3877 else
3878 {
dd5724d5 3879 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 3880do_glob_dat:
6725bdbf 3881 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 3882 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 3883 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
3884 }
3885
233cc9c1 3886 elf_append_rel (output_bfd, relgot, &rel);
252b5132
RH		 3887 }
3888
f5385ebf 3889 if (h->needs_copy)
252b5132 3890 {
947216bf 3891 Elf_Internal_Rela rel;
5474d94f 3892 asection *s;
252b5132
RH		 3893
3894 /* This symbol needs a copy reloc. Set it up. */
ff38b4cc 3895 VERIFY_COPY_RELOC (h, htab)
252b5132
RH		 3896
3897 rel.r_offset = (h->root.u.def.value
3898 + h->root.u.def.section->output_section->vma
3899 + h->root.u.def.section->output_offset);
3900 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
afbf7e8e 3901 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3902 s = htab->elf.sreldynrelro;
3903 else
3904 s = htab->elf.srelbss;
3905 elf_append_rel (output_bfd, s, &rel);
252b5132
RH		 3906 }
3907
b34976b6 3908 return TRUE;
252b5132
RH		 3909}
3910
c25bc9fc
L		 3911/* Finish up local dynamic symbol handling. We set the contents of
3912 various dynamic sections here. */
3913
3914static bfd_boolean
3915elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
3916{
3917 struct elf_link_hash_entry *h
3918 = (struct elf_link_hash_entry *) *slot;
3919 struct bfd_link_info *info
23209a78 3920 = (struct bfd_link_info *) inf;
c25bc9fc
L		 3921
3922 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
3923 h, NULL);
3924}
3925
aec6b87e
L		 3926/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
3927 here since undefined weak symbol may not be dynamic and may not be
3928 called for elf_i386_finish_dynamic_symbol. */
3929
3930static bfd_boolean
3931elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
3932 void *inf)
3933{
3934 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
3935 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3936
3937 if (h->root.type != bfd_link_hash_undefweak
3938 || h->dynindx != -1)
3939 return TRUE;
3940
3941 return elf_i386_finish_dynamic_symbol (info->output_bfd,
5f0f0847 3942 info, h, NULL);
aec6b87e
L		 3943}
3944
38701953
AM		 3945/* Used to decide how to sort relocs in an optimal manner for the
3946 dynamic linker, before writing them out. */
3947
3948static enum elf_reloc_type_class
cae1fbbb 3949elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 3950 const asection *rel_sec ATTRIBUTE_UNUSED,
3951 const Elf_Internal_Rela *rela)
38701953 3952{
cae1fbbb
L		 3953 bfd *abfd = info->output_bfd;
3954 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3955 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 3956
d9e3b590
L		 3957 if (htab->dynsym != NULL
3958 && htab->dynsym->contents != NULL)
3959 {
3960 /* Check relocation against STT_GNU_IFUNC symbol if there are
3961 dynamic symbols. */
3962 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
c428ce9d
L		 3963 if (r_symndx != STN_UNDEF)
3964 {
3965 Elf_Internal_Sym sym;
3966 if (!bed->s->swap_symbol_in (abfd,
3967 (htab->dynsym->contents
3968 + r_symndx * sizeof (Elf32_External_Sym)),
3969 0, &sym))
3970 abort ();
d9e3b590 3971
c428ce9d
L		 3972 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3973 return reloc_class_ifunc;
3974 }
d9e3b590 3975 }
cae1fbbb 3976
55fd94b0 3977 switch (ELF32_R_TYPE (rela->r_info))
38701953 3978 {
c428ce9d
L		 3979 case R_386_IRELATIVE:
3980 return reloc_class_ifunc;
38701953
AM		 3981 case R_386_RELATIVE:
3982 return reloc_class_relative;
3983 case R_386_JUMP_SLOT:
3984 return reloc_class_plt;
3985 case R_386_COPY:
3986 return reloc_class_copy;
3987 default:
3988 return reloc_class_normal;
3989 }
3990}
3991
252b5132
RH		 3992/* Finish up the dynamic sections. */
3993
b34976b6 3994static bfd_boolean
55fd94b0
AM		 3995elf_i386_finish_dynamic_sections (bfd *output_bfd,
3996 struct bfd_link_info *info)
252b5132 3997{
0afcef53 3998 struct elf_x86_link_hash_table *htab;
252b5132 3999
9577f60b 4000 htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
4dfe6ac6
NC		 4001 if (htab == NULL)
4002 return FALSE;
4003
9577f60b
L		 4004 if (!htab->elf.dynamic_sections_created)
4005 return TRUE;
252b5132 4006
9577f60b 4007 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 4008 {
9577f60b
L		 4009 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4010 really seem like the right value. */
4011 elf_section_data (htab->elf.splt->output_section)
4012 ->this_hdr.sh_entsize = 4;
252b5132 4013
9577f60b 4014 if (htab->plt.has_plt0)
252b5132 4015 {
9577f60b
L		 4016 /* Fill in the special first entry in the procedure linkage
4017 table. */
9577f60b
L		 4018 memcpy (htab->elf.splt->contents, htab->plt.plt0_entry,
4019 htab->lazy_plt->plt0_entry_size);
4020 memset (htab->elf.splt->contents + htab->lazy_plt->plt0_entry_size,
851b6fa1 4021 htab->plt0_pad_byte,
9577f60b
L		 4022 htab->plt.plt_entry_size - htab->lazy_plt->plt0_entry_size);
4023 if (!bfd_link_pic (info))
252b5132 4024 {
9577f60b
L		 4025 bfd_put_32 (output_bfd,
4026 (htab->elf.sgotplt->output_section->vma
4027 + htab->elf.sgotplt->output_offset
4028 + 4),
4029 htab->elf.splt->contents
4030 + htab->lazy_plt->plt0_got1_offset);
4031 bfd_put_32 (output_bfd,
4032 (htab->elf.sgotplt->output_section->vma
4033 + htab->elf.sgotplt->output_offset
4034 + 8),
4035 htab->elf.splt->contents
4036 + htab->lazy_plt->plt0_got2_offset);
1f78f649 4037
851b6fa1 4038 if (htab->target_os == is_vxworks)
eac338cf 4039 {
9577f60b
L		 4040 Elf_Internal_Rela rel;
4041 int num_plts = (htab->elf.splt->size
4042 / htab->plt.plt_entry_size) - 1;
4043 unsigned char *p;
4044 asection *srelplt2 = htab->srelplt2;
4045
4046 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
4047 + 4. On IA32 we use REL relocations so the
4048 addend goes in the PLT directly. */
4049 rel.r_offset = (htab->elf.splt->output_section->vma
4050 + htab->elf.splt->output_offset
4051 + htab->lazy_plt->plt0_got1_offset);
4052 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
4053 R_386_32);
4054 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4055 srelplt2->contents);
4056 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
4057 + 8. */
4058 rel.r_offset = (htab->elf.splt->output_section->vma
4059 + htab->elf.splt->output_offset
4060 + htab->lazy_plt->plt0_got2_offset);
4061 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
4062 R_386_32);
4063 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4064 srelplt2->contents +
4065 sizeof (Elf32_External_Rel));
4066 /* Correct the .rel.plt.unloaded relocations. */
4067 p = srelplt2->contents;
4068 if (bfd_link_pic (info))
4069 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4070 else
4071 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
eac338cf 4072
9577f60b 4073 for (; num_plts; num_plts--)
1f78f649 4074 {
9577f60b 4075 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
f604c2a2 4076 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
1f78f649 4077 R_386_32);
9577f60b
L		 4078 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4079 p += sizeof (Elf32_External_Rel);
f604c2a2 4080
9577f60b
L		 4081 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4082 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
4083 R_386_32);
4084 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4085 p += sizeof (Elf32_External_Rel);
1f78f649 4086 }
eac338cf
PB		 4087 }
4088 }
252b5132 4089 }
fff53dae
L		 4090 }
4091
aec6b87e
L		 4092 /* Fill PLT entries for undefined weak symbols in PIE. */
4093 if (bfd_link_pie (info))
4094 bfd_hash_traverse (&info->hash->table,
4095 elf_i386_pie_finish_undefweak_symbol,
4096 info);
4097
b34976b6 4098 return TRUE;
252b5132
RH		 4099}
4100
233cc9c1
L		 4101/* Fill PLT/GOT entries and allocate dynamic relocations for local
4102 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4103 It has to be done before elf_link_sort_relocs is called so that
4104 dynamic relocations are properly sorted. */
4105
4106static bfd_boolean
4107elf_i386_output_arch_local_syms
4108 (bfd *output_bfd ATTRIBUTE_UNUSED,
4109 struct bfd_link_info *info,
4110 void *flaginfo ATTRIBUTE_UNUSED,
4111 int (*func) (void *, const char *,
4112 Elf_Internal_Sym *,
4113 asection *,
4114 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4115{
0afcef53
L		 4116 struct elf_x86_link_hash_table *htab
4117 = elf_x86_hash_table (info, I386_ELF_DATA);
233cc9c1
L		 4118 if (htab == NULL)
4119 return FALSE;
4120
4121 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4122 htab_traverse (htab->loc_hash_table,
4123 elf_i386_finish_local_dynamic_symbol,
4124 info);
4125
4126 return TRUE;
4127}
4128
f604c2a2 4129/* Forward declaration. */
765e526c 4130static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt;
f604c2a2
L		 4131
4132/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4133 dynamic relocations. */
4134
4135static long
4136elf_i386_get_synthetic_symtab (bfd *abfd,
4137 long symcount ATTRIBUTE_UNUSED,
4138 asymbol **syms ATTRIBUTE_UNUSED,
4139 long dynsymcount,
4140 asymbol **dynsyms,
4141 asymbol **ret)
4142{
f493882d 4143 long count, i, n;
f604c2a2 4144 int j;
f604c2a2 4145 bfd_byte *plt_contents;
f493882d 4146 long relsize;
765e526c
L		 4147 const struct elf_x86_lazy_plt_layout *lazy_plt;
4148 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4149 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4150 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
f604c2a2
L		 4151 asection *plt;
4152 bfd_vma got_addr;
f493882d
L		 4153 enum elf_x86_plt_type plt_type;
4154 struct elf_x86_plt plts[] =
3972882e 4155 {
f493882d
L		 4156 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4157 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
4158 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4159 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
f604c2a2 4160 };
144bed8d 4161
f604c2a2 4162 *ret = NULL;
144bed8d 4163
f604c2a2
L		 4164 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4165 return 0;
3972882e 4166
f604c2a2
L		 4167 if (dynsymcount <= 0)
4168 return 0;
cca5b8b6 4169
f604c2a2
L		 4170 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4171 if (relsize <= 0)
4172 return -1;
cca5b8b6 4173
f604c2a2
L		 4174 non_lazy_plt = NULL;
4175 /* Silence GCC 6. */
4176 lazy_plt = NULL;
ee2fdd6f
L		 4177 non_lazy_ibt_plt = NULL;
4178 lazy_ibt_plt = NULL;
851b6fa1 4179 switch (get_elf_x86_backend_data (abfd)->target_os)
144bed8d 4180 {
f604c2a2
L		 4181 case is_normal:
4182 non_lazy_plt = &elf_i386_non_lazy_plt;
ee2fdd6f
L		 4183 lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
4184 non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
f604c2a2
L		 4185 /* Fall through */
4186 case is_vxworks:
4187 lazy_plt = &elf_i386_lazy_plt;
4188 break;
4189 case is_nacl:
4190 lazy_plt = &elf_i386_nacl_plt;
4191 break;
4192 }
4193
4194 got_addr = 0;
3972882e 4195
f604c2a2
L		 4196 count = 0;
4197 for (j = 0; plts[j].name != NULL; j++)
4198 {
4199 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4200 if (plt == NULL || plt->size == 0)
6f25f223 4201 continue;
533d0af0 4202
f604c2a2
L		 4203 /* Get the PLT section contents. */
4204 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4205 if (plt_contents == NULL)
4206 break;
4207 if (!bfd_get_section_contents (abfd, (asection *) plt,
4208 plt_contents, 0, plt->size))
4209 {
4210 free (plt_contents);
4211 break;
4212 }
4213
4214 /* Check what kind of PLT it is. */
4215 plt_type = plt_unknown;
90efb642
L		 4216 if (plts[j].type == plt_unknown
4217 && (plt->size >= (lazy_plt->plt0_entry_size
4218 + lazy_plt->plt_entry_size)))
f604c2a2
L		 4219 {
4220 /* Match lazy PLT first. */
4221 if (memcmp (plt_contents, lazy_plt->plt0_entry,
4222 lazy_plt->plt0_got1_offset) == 0)
ee2fdd6f
L		 4223 {
4224 /* The fist entry in the lazy IBT PLT is the same as the
4225 normal lazy PLT. */
4226 if (lazy_ibt_plt != NULL
90efb642 4227 && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
ee2fdd6f
L		 4228 lazy_ibt_plt->plt_entry,
4229 lazy_ibt_plt->plt_got_offset) == 0))
4230 plt_type = plt_lazy | plt_second;
4231 else
4232 plt_type = plt_lazy;
4233 }
f604c2a2
L		 4234 else if (memcmp (plt_contents, lazy_plt->pic_plt0_entry,
4235 lazy_plt->plt0_got1_offset) == 0)
ee2fdd6f
L		 4236 {
4237 /* The fist entry in the PIC lazy IBT PLT is the same as
4238 the normal PIC lazy PLT. */
4239 if (lazy_ibt_plt != NULL
90efb642 4240 && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
ee2fdd6f
L		 4241 lazy_ibt_plt->pic_plt_entry,
4242 lazy_ibt_plt->plt_got_offset) == 0))
4243 plt_type = plt_lazy | plt_pic | plt_second;
4244 else
4245 plt_type = plt_lazy | plt_pic;
4246 }
f604c2a2
L		 4247 }
4248
4249 if (non_lazy_plt != NULL
90efb642
L		 4250 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4251 && plt->size >= non_lazy_plt->plt_entry_size)
f604c2a2
L		 4252 {
4253 /* Match non-lazy PLT. */
4254 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4255 non_lazy_plt->plt_got_offset) == 0)
4256 plt_type = plt_non_lazy;
4257 else if (memcmp (plt_contents, non_lazy_plt->pic_plt_entry,
4258 non_lazy_plt->plt_got_offset) == 0)
4259 plt_type = plt_pic;
4260 }
4261
ee2fdd6f 4262 if ((non_lazy_ibt_plt != NULL)
90efb642
L		 4263 && (plt_type == plt_unknown || plt_type == plt_second)
4264 && plt->size >= non_lazy_ibt_plt->plt_entry_size)
ee2fdd6f
L		 4265 {
4266 if (memcmp (plt_contents,
4267 non_lazy_ibt_plt->plt_entry,
4268 non_lazy_ibt_plt->plt_got_offset) == 0)
4269 {
4270 /* Match IBT PLT. */
4271 plt_type = plt_second;
4272 non_lazy_plt = non_lazy_ibt_plt;
4273 }
4274 else if (memcmp (plt_contents,
4275 non_lazy_ibt_plt->pic_plt_entry,
4276 non_lazy_ibt_plt->plt_got_offset) == 0)
4277 {
4278 /* Match PIC IBT PLT. */
4279 plt_type = plt_second | plt_pic;
4280 non_lazy_plt = non_lazy_ibt_plt;
4281 }
4282 }
4283
f604c2a2 4284 if (plt_type == plt_unknown)
37c0b6ee
L		 4285 {
4286 free (plt_contents);
4287 continue;
4288 }
3972882e 4289
f604c2a2
L		 4290 plts[j].sec = plt;
4291 plts[j].type = plt_type;
ec1f73bb 4292
f604c2a2
L		 4293 if ((plt_type & plt_lazy))
4294 {
4295 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4296 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4297 /* Skip PLT0 in lazy PLT. */
4298 i = 1;
4299 }
4300 else
4301 {
4302 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4303 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4304 i = 0;
4305 }
fca6ae69 4306
ee2fdd6f
L		 4307 /* Skip lazy PLT when the second PLT is used. */
4308 if ((plt_type & (plt_lazy | plt_second))
4309 == (plt_lazy | plt_second))
4310 plts[j].count = 0;
4311 else
4312 {
4313 n = plt->size / plts[j].plt_entry_size;
4314 plts[j].count = n;
4315 count += n - i;
4316 }
f604c2a2
L		 4317
4318 plts[j].contents = plt_contents;
4319
4320 /* The _GLOBAL_OFFSET_TABLE_ address is needed. */
4321 if ((plt_type & plt_pic))
4322 got_addr = (bfd_vma) -1;
144bed8d
L		 4323 }
4324
f493882d
L		 4325 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4326 got_addr, plts, dynsyms,
4327 ret);
4c45e5c9
JJ		 4328}
4329
f604c2a2
L		 4330/* Set up i386 GNU properties. Return the first relocatable ELF input
4331 with GNU properties if found. Otherwise, return NULL. */
4332
4333static bfd *
4334elf_i386_link_setup_gnu_properties (struct bfd_link_info *info)
4335{
1de031c8 4336 struct elf_x86_init_table init_table;
f604c2a2 4337
851b6fa1 4338 switch (get_elf_x86_backend_data (info->output_bfd)->target_os)
f604c2a2
L		 4339 {
4340 case is_normal:
851b6fa1 4341 init_table.plt0_pad_byte = 0x0;
1de031c8
L		 4342 init_table.lazy_plt = &elf_i386_lazy_plt;
4343 init_table.non_lazy_plt = &elf_i386_non_lazy_plt;
4344 init_table.lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
4345 init_table.non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
f604c2a2
L		 4346 break;
4347 case is_vxworks:
851b6fa1 4348 init_table.plt0_pad_byte = 0x90;
1de031c8
L		 4349 init_table.lazy_plt = &elf_i386_lazy_plt;
4350 init_table.non_lazy_plt = NULL;
4351 init_table.lazy_ibt_plt = NULL;
4352 init_table.non_lazy_ibt_plt = NULL;
f604c2a2
L		 4353 break;
4354 case is_nacl:
851b6fa1 4355 init_table.plt0_pad_byte = 0x90;
1de031c8
L		 4356 init_table.lazy_plt = &elf_i386_nacl_plt;
4357 init_table.non_lazy_plt = NULL;
4358 init_table.lazy_ibt_plt = NULL;
4359 init_table.non_lazy_ibt_plt = NULL;
f604c2a2
L		 4360 break;
4361 }
4362
1de031c8
L		 4363 init_table.r_info = elf32_r_info;
4364 init_table.r_sym = elf32_r_sym;
7a382c1c 4365
1de031c8 4366 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
f604c2a2
L		 4367}
4368
6d00b590 4369#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 4370#define TARGET_LITTLE_NAME "elf32-i386"
4371#define ELF_ARCH bfd_arch_i386
ae95ffa6 4372#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 4373#define ELF_MACHINE_CODE EM_386
4374#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 4375
4376#define elf_backend_can_gc_sections 1
51b64d56 4377#define elf_backend_can_refcount 1
252b5132
RH		 4378#define elf_backend_want_got_plt 1
4379#define elf_backend_plt_readonly 1
4380#define elf_backend_want_plt_sym 0
4381#define elf_backend_got_header_size 12
e41b3a13 4382#define elf_backend_plt_alignment 4
64f52338 4383#define elf_backend_dtrel_excludes_plt 1
f7483970 4384#define elf_backend_extern_protected_data 1
bedfd056 4385#define elf_backend_caches_rawsize 1
5474d94f 4386#define elf_backend_want_dynrelro 1
252b5132 4387
8c29f035
AM		 4388/* Support RELA for objdump of prelink objects. */
4389#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 4390#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
4391
dd5724d5 4392#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
dd5724d5 4393#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 4394#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 4395#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5 4396
13285a1b 4397#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 4398#define elf_backend_check_relocs elf_i386_check_relocs
f604c2a2 4399#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
0ac8d2ca 4400#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 4401#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
4402#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
233cc9c1 4403#define elf_backend_output_arch_local_syms elf_i386_output_arch_local_syms
c5fccbec
DJ		 4404#define elf_backend_grok_prstatus elf_i386_grok_prstatus
4405#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 4406#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca 4407#define elf_backend_relocate_section elf_i386_relocate_section
f604c2a2 4408#define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties
9f857535 4409#define elf_backend_hide_symbol _bfd_x86_elf_hide_symbol
dd5724d5 4410
a2f63b2e
MR		 4411#define elf_backend_linux_prpsinfo32_ugid16 TRUE
4412
252b5132 4413#include "elf32-target.h"
2bc3c89a
AM		 4414
4415/* FreeBSD support. */
4416
4417#undef TARGET_LITTLE_SYM
6d00b590 4418#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 4419#undef TARGET_LITTLE_NAME
4420#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 4421#undef ELF_OSABI
4422#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 4423
4424/* The kernel recognizes executables as valid only if they carry a
4425 "FreeBSD" label in the ELF header. So we put this label on all
4426 executables and (for simplicity) also all other object files. */
4427
2bc3c89a 4428static void
d8045f23 4429elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 4430{
78245035 4431 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 4432
2bc3c89a 4433#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 4434 {
4435 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
4436 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4437 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
4438 }
caf47ea6 4439#endif
2bc3c89a
AM		 4440}
4441
4442#undef elf_backend_post_process_headers
d8045f23 4443#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 4444#undef elf32_bed
4445#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 4446
d8045f23
NC		 4447#undef elf_backend_add_symbol_hook
4448
2bc3c89a 4449#include "elf32-target.h"
eac338cf 4450
a6cc6b3b
RO		 4451/* Solaris 2. */
4452
4453#undef TARGET_LITTLE_SYM
6d00b590 4454#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 4455#undef TARGET_LITTLE_NAME
4456#define TARGET_LITTLE_NAME "elf32-i386-sol2"
4457
914082d1
L		 4458#undef elf_backend_post_process_headers
4459
a6cc6b3b
RO		 4460/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
4461 objects won't be recognized. */
4462#undef ELF_OSABI
4463
4464#undef elf32_bed
4465#define elf32_bed elf32_i386_sol2_bed
4466
7dc98aea
RO		 4467/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
4468 boundary. */
84865015 4469#undef elf_backend_static_tls_alignment
7dc98aea
RO		 4470#define elf_backend_static_tls_alignment 8
4471
a6cc6b3b
RO		 4472/* The Solaris 2 ABI requires a plt symbol on all platforms.
4473
4474 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
4475 File, p.63. */
84865015 4476#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 4477#define elf_backend_want_plt_sym 1
4478
84865015
NC		 4479#undef elf_backend_strtab_flags
4480#define elf_backend_strtab_flags SHF_STRINGS
4481
5522f910
NC		 4482/* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
4483 has a type >= SHT_LOOS. Returns TRUE if these fields were initialised
4484 FALSE otherwise. ISECTION is the best guess matching section from the
4485 input bfd IBFD, but it might be NULL. */
4486
84865015 4487static bfd_boolean
5522f910
NC		 4488elf32_i386_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
4489 bfd *obfd ATTRIBUTE_UNUSED,
4490 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
4491 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 4492{
4493 /* PR 19938: FIXME: Need to add code for setting the sh_info
5522f910
NC		 4494 and sh_link fields of Solaris specific section types. */
4495 return FALSE;
84865015 4496
5522f910 4497 /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13,
84865015
NC		 4498 Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation:
4499
4500http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc
4501
4502 The following values should be set:
4503
4504Type Link Info
4505-----------------------------------------------------------------------------
4506SHT_SUNW_ancillary The section header index of 0
4507 [0x6fffffee] the associated string table.
4508
4509SHT_SUNW_capinfo The section header index of For a dynamic object, the
4510 [0x6ffffff0] the associated symbol table. section header index of
4511 the associated
4512 SHT_SUNW_capchain table,
4513 otherwise 0.
4514
4515SHT_SUNW_symsort The section header index of 0
4516 [0x6ffffff1] the associated symbol table.
4517
4518SHT_SUNW_tlssort The section header index of 0
4519 [0x6ffffff2] the associated symbol table.
4520
4521SHT_SUNW_LDYNSYM The section header index of One greater than the
4522 [0x6ffffff3] the associated string table. symbol table index of the
4523 This index is the same string last local symbol,
4524 table used by the SHT_DYNSYM STB_LOCAL. Since
4525 section. SHT_SUNW_LDYNSYM only
4526 contains local symbols,
4527 sh_info is equivalent to
4528 the number of symbols in
4529 the table.
4530
4531SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer
4532 [0x6ffffff5] the section header index of to named strings, the
4533 the associated section header index of
4534 SHT_SUNW_capinfo table, the associated string
4535 otherwise 0. table, otherwise 0.
4536
4537SHT_SUNW_move The section header index of 0
4538 [0x6ffffffa] the associated symbol table.
4539
4540SHT_SUNW_COMDAT 0 0
4541 [0x6ffffffb]
4542
4543SHT_SUNW_syminfo The section header index of The section header index
4544 [0x6ffffffc] the associated symbol table. of the associated
4545 .dynamic section.
4546
4547SHT_SUNW_verdef The section header index of The number of version
4548 [0x6ffffffd] the associated string table. definitions within the
4549 section.
4550
4551SHT_SUNW_verneed The section header index of The number of version
4552 [0x6ffffffe] the associated string table. dependencies within the
4553 section.
4554
4555SHT_SUNW_versym The section header index of 0
4556 [0x6fffffff] the associated symbol table. */
84865015
NC		 4557}
4558
5522f910
NC		 4559#undef elf_backend_copy_special_section_fields
4560#define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields
84865015 4561
a6cc6b3b
RO		 4562#include "elf32-target.h"
4563
bf64a951
L		 4564/* Intel MCU support. */
4565
4566static bfd_boolean
4567elf32_iamcu_elf_object_p (bfd *abfd)
4568{
4569 /* Set the right machine number for an IAMCU elf32 file. */
4570 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
4571 return TRUE;
4572}
4573
4574#undef TARGET_LITTLE_SYM
4575#define TARGET_LITTLE_SYM iamcu_elf32_vec
4576#undef TARGET_LITTLE_NAME
4577#define TARGET_LITTLE_NAME "elf32-iamcu"
84865015 4578#undef ELF_ARCH
bf64a951
L		 4579#define ELF_ARCH bfd_arch_iamcu
4580
4581#undef ELF_MACHINE_CODE
4582#define ELF_MACHINE_CODE EM_IAMCU
4583
4584#undef ELF_OSABI
4585
4586#undef elf32_bed
4587#define elf32_bed elf32_iamcu_bed
4588
4589#undef elf_backend_object_p
4590#define elf_backend_object_p elf32_iamcu_elf_object_p
4591
4592#undef elf_backend_static_tls_alignment
4593
4594#undef elf_backend_want_plt_sym
4595#define elf_backend_want_plt_sym 0
4596
84865015 4597#undef elf_backend_strtab_flags
5522f910 4598#undef elf_backend_copy_special_section_fields
84865015 4599
bf64a951
L		 4600#include "elf32-target.h"
4601
4602/* Restore defaults. */
4603#undef ELF_ARCH
4604#define ELF_ARCH bfd_arch_i386
4605#undef ELF_MACHINE_CODE
4606#define ELF_MACHINE_CODE EM_386
4607
a27e4371
RM		 4608/* Native Client support. */
4609
4610#undef TARGET_LITTLE_SYM
6d00b590 4611#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 4612#undef TARGET_LITTLE_NAME
4613#define TARGET_LITTLE_NAME "elf32-i386-nacl"
4614#undef elf32_bed
4615#define elf32_bed elf32_i386_nacl_bed
4616
4617#undef ELF_MAXPAGESIZE
4618#define ELF_MAXPAGESIZE 0x10000
4619
4620/* Restore defaults. */
4621#undef ELF_OSABI
4622#undef elf_backend_want_plt_sym
4623#define elf_backend_want_plt_sym 0
4624#undef elf_backend_post_process_headers
a27e4371
RM		 4625#undef elf_backend_static_tls_alignment
4626
4627/* NaCl uses substantially different PLT entries for the same effects. */
4628
4629#undef elf_backend_plt_alignment
4630#define elf_backend_plt_alignment 5
4631#define NACL_PLT_ENTRY_SIZE 64
4632#define NACLMASK 0xe0 /* 32-byte alignment mask. */
4633
4634static const bfd_byte elf_i386_nacl_plt0_entry[] =
4635 {
4636 0xff, 0x35, /* pushl contents of address */
4637 0, 0, 0, 0, /* replaced with address of .got + 4. */
4638 0x8b, 0x0d, /* movl contents of address, %ecx */
4639 0, 0, 0, 0, /* replaced with address of .got + 8. */
4640 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
4641 0xff, 0xe1 /* jmp *%ecx */
4642 };
4643
4644static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
4645 {
4646 0x8b, 0x0d, /* movl contents of address, %ecx */
4647 0, 0, 0, 0, /* replaced with GOT slot address. */
4648 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
4649 0xff, 0xe1, /* jmp *%ecx */
4650
4651 /* Pad to the next 32-byte boundary with nop instructions. */
4652 0x90,
4653 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4654 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4655
4656 /* Lazy GOT entries point here (32-byte aligned). */
4657 0x68, /* pushl immediate */
4658 0, 0, 0, 0, /* replaced with reloc offset. */
4659 0xe9, /* jmp relative */
4660 0, 0, 0, 0, /* replaced with offset to .plt. */
4661
4662 /* Pad to the next 32-byte boundary with nop instructions. */
4663 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4664 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4665 0x90, 0x90
4666 };
4667
4668static const bfd_byte
4669elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
4670 {
4671 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
4672 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
4673 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
4674 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 4675
4676 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
4677 so pad to that size with nop instructions. */
4678 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 4679 };
4680
4681static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
4682 {
4683 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
4684 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
4685 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
4686 0xff, 0xe1, /* jmp *%ecx */
4687
4688 /* Pad to the next 32-byte boundary with nop instructions. */
4689 0x90,
4690 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4691 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4692
4693 /* Lazy GOT entries point here (32-byte aligned). */
4694 0x68, /* pushl immediate */
4695 0, 0, 0, 0, /* replaced with offset into relocation table. */
4696 0xe9, /* jmp relative */
4697 0, 0, 0, 0, /* replaced with offset to start of .plt. */
4698
4699 /* Pad to the next 32-byte boundary with nop instructions. */
4700 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4701 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
4702 0x90, 0x90
4703 };
4704
4705static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
4706 {
4707#if (PLT_CIE_LENGTH != 20 \
4708 || PLT_FDE_LENGTH != 36 \
4709 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
4710 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
851b6fa1 4711# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
a27e4371
RM		 4712#endif
4713 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
4714 0, 0, 0, 0, /* CIE ID */
4715 1, /* CIE version */
4716 'z', 'R', 0, /* Augmentation string */
4717 1, /* Code alignment factor */
4718 0x7c, /* Data alignment factor: -4 */
4719 8, /* Return address column */
4720 1, /* Augmentation size */
4721 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
4722 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
4723 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
4724 DW_CFA_nop, DW_CFA_nop,
4725
4726 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
4727 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
4728 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
4729 0, 0, 0, 0, /* .plt size goes here */
4730 0, /* Augmentation size */
4731 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
4732 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
4733 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
4734 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
4735 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
4736 13, /* Block length */
4737 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
4738 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
4739 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
4740 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
4741 DW_CFA_nop, DW_CFA_nop
4742 };
4743
765e526c 4744static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt =
a27e4371
RM		 4745 {
4746 elf_i386_nacl_plt0_entry, /* plt0_entry */
4747 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
a27e4371
RM		 4748 elf_i386_nacl_plt_entry, /* plt_entry */
4749 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
765e526c
L		 4750 2, /* plt0_got1_offset */
4751 8, /* plt0_got2_offset */
4752 0, /* plt0_got2_insn_end */
a27e4371
RM		 4753 2, /* plt_got_offset */
4754 33, /* plt_reloc_offset */
4755 38, /* plt_plt_offset */
765e526c
L		 4756 0, /* plt_got_insn_size */
4757 0, /* plt_plt_insn_end */
a27e4371
RM		 4758 32, /* plt_lazy_offset */
4759 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
4760 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
4761 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
f604c2a2 4762 sizeof (elf_i386_nacl_eh_frame_plt) /* eh_frame_plt_size */
a27e4371
RM		 4763 };
4764
851b6fa1 4765static const struct elf_x86_backend_data elf_i386_nacl_arch_bed =
a27e4371 4766 {
f604c2a2 4767 is_nacl /* os */
a27e4371
RM		 4768 };
4769
64b384e1
RM		 4770static bfd_boolean
4771elf32_i386_nacl_elf_object_p (bfd *abfd)
4772{
4773 /* Set the right machine number for a NaCl i386 ELF32 file. */
4774 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
4775 return TRUE;
4776}
4777
a27e4371
RM		 4778#undef elf_backend_arch_data
4779#define elf_backend_arch_data &elf_i386_nacl_arch_bed
4780
64b384e1
RM		 4781#undef elf_backend_object_p
4782#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 4783#undef elf_backend_modify_segment_map
4784#define elf_backend_modify_segment_map nacl_modify_segment_map
4785#undef elf_backend_modify_program_headers
4786#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 4787#undef elf_backend_final_write_processing
4788#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 4789
a27e4371
RM		 4790#include "elf32-target.h"
4791
5a68afcf 4792/* Restore defaults. */
64b384e1 4793#undef elf_backend_object_p
5a68afcf
RM		 4794#undef elf_backend_modify_segment_map
4795#undef elf_backend_modify_program_headers
887badb3 4796#undef elf_backend_final_write_processing
5a68afcf 4797
eac338cf
PB		 4798/* VxWorks support. */
4799
4800#undef TARGET_LITTLE_SYM
6d00b590 4801#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 4802#undef TARGET_LITTLE_NAME
4803#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 4804#undef ELF_OSABI
1587442d
L		 4805#undef ELF_MAXPAGESIZE
4806#define ELF_MAXPAGESIZE 0x1000
a27e4371
RM		 4807#undef elf_backend_plt_alignment
4808#define elf_backend_plt_alignment 4
eac338cf 4809
851b6fa1 4810static const struct elf_x86_backend_data elf_i386_vxworks_arch_bed =
23209a78 4811 {
f604c2a2 4812 is_vxworks /* os */
23209a78 4813 };
eac338cf 4814
23209a78
RM		 4815#undef elf_backend_arch_data
4816#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 4817
13285a1b 4818#undef elf_backend_relocs_compatible
eac338cf
PB		 4819#undef elf_backend_add_symbol_hook
4820#define elf_backend_add_symbol_hook \
4821 elf_vxworks_add_symbol_hook
4822#undef elf_backend_link_output_symbol_hook
4823#define elf_backend_link_output_symbol_hook \
9c72ff84 4824 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 4825#undef elf_backend_emit_relocs
4826#define elf_backend_emit_relocs elf_vxworks_emit_relocs
4827#undef elf_backend_final_write_processing
4828#define elf_backend_final_write_processing \
4829 elf_vxworks_final_write_processing
7dc98aea 4830#undef elf_backend_static_tls_alignment
eac338cf
PB		 4831
4832/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4833 define it. */
4834#undef elf_backend_want_plt_sym
4835#define elf_backend_want_plt_sym 1
4836
4837#undef elf32_bed
4838#define elf32_bed elf32_i386_vxworks_bed
4839
4840#include "elf32-target.h"
GDB Binutils - Deliverables
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