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x86: Move GOT_TLS_* in elf32-i386.c to elfxx-x86.h
[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
252b5132 185#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 186#define TRACE(str) \
187 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 188#else
189#define TRACE(str)
190#endif
191
192static reloc_howto_type *
55fd94b0
AM		 193elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
194 bfd_reloc_code_real_type code)
252b5132
RH		 195{
196 switch (code)
197 {
198 case BFD_RELOC_NONE:
199 TRACE ("BFD_RELOC_NONE");
55fd94b0 200 return &elf_howto_table[R_386_NONE];
252b5132
RH		 201
202 case BFD_RELOC_32:
203 TRACE ("BFD_RELOC_32");
55fd94b0 204 return &elf_howto_table[R_386_32];
252b5132
RH		 205
206 case BFD_RELOC_CTOR:
207 TRACE ("BFD_RELOC_CTOR");
55fd94b0 208 return &elf_howto_table[R_386_32];
252b5132
RH		 209
210 case BFD_RELOC_32_PCREL:
211 TRACE ("BFD_RELOC_PC32");
55fd94b0 212 return &elf_howto_table[R_386_PC32];
252b5132
RH		 213
214 case BFD_RELOC_386_GOT32:
215 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 216 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 217
218 case BFD_RELOC_386_PLT32:
219 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 220 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 221
222 case BFD_RELOC_386_COPY:
223 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 224 return &elf_howto_table[R_386_COPY];
252b5132
RH		 225
226 case BFD_RELOC_386_GLOB_DAT:
227 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 228 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 229
230 case BFD_RELOC_386_JUMP_SLOT:
231 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 232 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 233
234 case BFD_RELOC_386_RELATIVE:
235 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 236 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 237
238 case BFD_RELOC_386_GOTOFF:
239 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 240 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 241
242 case BFD_RELOC_386_GOTPC:
243 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 244 return &elf_howto_table[R_386_GOTPC];
252b5132 245
37e55690
JJ		 246 /* These relocs are a GNU extension. */
247 case BFD_RELOC_386_TLS_TPOFF:
248 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 249 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 250
251 case BFD_RELOC_386_TLS_IE:
252 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 253 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 254
255 case BFD_RELOC_386_TLS_GOTIE:
256 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 257 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 258
13ae64f3
JJ		 259 case BFD_RELOC_386_TLS_LE:
260 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 261 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 262
263 case BFD_RELOC_386_TLS_GD:
264 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 265 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 266
267 case BFD_RELOC_386_TLS_LDM:
268 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 269 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 270
252b5132
RH		 271 case BFD_RELOC_16:
272 TRACE ("BFD_RELOC_16");
55fd94b0 273 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 274
275 case BFD_RELOC_16_PCREL:
276 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 277 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 278
279 case BFD_RELOC_8:
280 TRACE ("BFD_RELOC_8");
55fd94b0 281 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 282
283 case BFD_RELOC_8_PCREL:
284 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 285 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 286
13ae64f3
JJ		 287 /* Common with Sun TLS implementation. */
288 case BFD_RELOC_386_TLS_LDO_32:
289 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 290 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 291
292 case BFD_RELOC_386_TLS_IE_32:
293 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 294 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 295
296 case BFD_RELOC_386_TLS_LE_32:
297 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 298 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 299
300 case BFD_RELOC_386_TLS_DTPMOD32:
301 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 302 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 303
304 case BFD_RELOC_386_TLS_DTPOFF32:
305 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 306 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 307
308 case BFD_RELOC_386_TLS_TPOFF32:
309 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 310 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 311
1788fc08
L		 312 case BFD_RELOC_SIZE32:
313 TRACE ("BFD_RELOC_SIZE32");
314 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
315
67a4f2b7
AO		 316 case BFD_RELOC_386_TLS_GOTDESC:
317 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
318 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
319
320 case BFD_RELOC_386_TLS_DESC_CALL:
321 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
322 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
323
324 case BFD_RELOC_386_TLS_DESC:
325 TRACE ("BFD_RELOC_386_TLS_DESC");
326 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
327
cbe950e9
L		 328 case BFD_RELOC_386_IRELATIVE:
329 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 330 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 331
02a86693
L		 332 case BFD_RELOC_386_GOT32X:
333 TRACE ("BFD_RELOC_386_GOT32X");
334 return &elf_howto_table[R_386_GOT32X - R_386_tls_offset];
335
252b5132
RH		 336 case BFD_RELOC_VTABLE_INHERIT:
337 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 338 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 339
340 case BFD_RELOC_VTABLE_ENTRY:
341 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 342 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 343
344 default:
345 break;
346 }
347
348 TRACE ("Unknown");
349 return 0;
350}
351
157090f7
AM		 352static reloc_howto_type *
353elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
354 const char *r_name)
355{
356 unsigned int i;
357
358 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
359 if (elf_howto_table[i].name != NULL
360 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
361 return &elf_howto_table[i];
362
363 return NULL;
364}
365
142411ca
L		 366static reloc_howto_type *
367elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 368{
dc47f327
AM		 369 unsigned int indx;
370
371 if ((indx = r_type) >= R_386_standard
372 && ((indx = r_type - R_386_ext_offset) - R_386_standard
373 >= R_386_ext - R_386_standard)
13ae64f3 374 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520
L		 375 >= R_386_ext2 - R_386_ext)
376 && ((indx = r_type - R_386_vt_offset) - R_386_ext2
377 >= R_386_vt - R_386_ext2))
252b5132 378 {
695344c0 379 /* xgettext:c-format */
4eca0228
AM		 380 _bfd_error_handler (_("%B: invalid relocation type %d"),
381 abfd, (int) r_type);
55fd94b0 382 indx = R_386_NONE;
252b5132 383 }
06614111
NC		 384 /* PR 17512: file: 0f67f69d. */
385 if (elf_howto_table [indx].type != r_type)
386 return NULL;
142411ca
L		 387 return &elf_howto_table[indx];
388}
389
390static void
391elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
392 arelent *cache_ptr,
393 Elf_Internal_Rela *dst)
394{
395 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
396 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 397}
398
399/* Return whether a symbol name implies a local label. The UnixWare
400 2.1 cc generates temporary symbols that start with .X, so we
401 recognize them here. FIXME: do other SVR4 compilers also use .X?.
402 If so, we should move the .X recognition into
403 _bfd_elf_is_local_label_name. */
404
b34976b6 405static bfd_boolean
55fd94b0 406elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 407{
408 if (name[0] == '.' && name[1] == 'X')
b34976b6 409 return TRUE;
252b5132
RH		 410
411 return _bfd_elf_is_local_label_name (abfd, name);
412}
413\f
38701953 414/* Support for core dump NOTE sections. */
61adc1a4 415
b34976b6 416static bfd_boolean
55fd94b0 417elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 418{
419 int offset;
eea6121a 420 size_t size;
38701953 421
61adc1a4 422 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 423 {
61adc1a4
NC		 424 int pr_version = bfd_get_32 (abfd, note->descdata);
425
426 if (pr_version != 1)
427 return FALSE;
428
429 /* pr_cursig */
228e534f 430 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 431
432 /* pr_pid */
228e534f 433 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 434
435 /* pr_reg */
436 offset = 28;
eea6121a 437 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 438 }
439 else
440 {
441 switch (note->descsz)
442 {
443 default:
444 return FALSE;
38701953 445
61adc1a4
NC		 446 case 144: /* Linux/i386 */
447 /* pr_cursig */
228e534f 448 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 449
61adc1a4 450 /* pr_pid */
228e534f 451 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 452
61adc1a4
NC		 453 /* pr_reg */
454 offset = 72;
eea6121a 455 size = 68;
38701953 456
61adc1a4
NC		 457 break;
458 }
38701953
AM		 459 }
460
461 /* Make a ".reg/999" section. */
462 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 463 size, note->descpos + offset);
38701953
AM		 464}
465
b34976b6 466static bfd_boolean
55fd94b0 467elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 468{
61adc1a4 469 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 470 {
61adc1a4
NC		 471 int pr_version = bfd_get_32 (abfd, note->descdata);
472
473 if (pr_version != 1)
b34976b6 474 return FALSE;
38701953 475
228e534f 476 elf_tdata (abfd)->core->program
61adc1a4 477 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 478 elf_tdata (abfd)->core->command
61adc1a4
NC		 479 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
480 }
481 else
482 {
483 switch (note->descsz)
484 {
485 default:
486 return FALSE;
487
488 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 489 elf_tdata (abfd)->core->pid
261b8d08 490 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 491 elf_tdata (abfd)->core->program
61adc1a4 492 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 493 elf_tdata (abfd)->core->command
61adc1a4
NC		 494 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
495 }
38701953
AM		 496 }
497
498 /* Note that for some reason, a spurious space is tacked
499 onto the end of the args in some (at least one anyway)
500 implementations, so strip it off if it exists. */
38701953 501 {
228e534f 502 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 503 int n = strlen (command);
504
505 if (0 < n && command[n - 1] == ' ')
506 command[n - 1] = '\0';
507 }
508
b34976b6 509 return TRUE;
38701953
AM		 510}
511\f
512/* Functions for the i386 ELF linker.
513
514 In order to gain some understanding of code in this file without
515 knowing all the intricate details of the linker, note the
516 following:
517
518 Functions named elf_i386_* are called by external routines, other
519 functions are only called locally. elf_i386_* functions appear
520 in this file more or less in the order in which they are called
521 from external routines. eg. elf_i386_check_relocs is called
522 early in the link process, elf_i386_finish_dynamic_sections is
523 one of the last functions. */
524
f604c2a2 525/* The size in bytes of an entry in the lazy procedure linkage table. */
252b5132 526
f604c2a2 527#define LAZY_PLT_ENTRY_SIZE 16
252b5132 528
f604c2a2
L		 529/* The size in bytes of an entry in the non-lazy procedure linkage
530 table. */
252b5132 531
f604c2a2
L		 532#define NON_LAZY_PLT_ENTRY_SIZE 8
533
534/* The first entry in an absolute lazy procedure linkage table looks
535 like this. See the SVR4 ABI i386 supplement to see how this works.
536 Will be padded to LAZY_PLT_ENTRY_SIZE with lazy_plt->plt0_pad_byte. */
537
538static const bfd_byte elf_i386_lazy_plt0_entry[12] =
252b5132
RH		 539{
540 0xff, 0x35, /* pushl contents of address */
541 0, 0, 0, 0, /* replaced with address of .got + 4. */
542 0xff, 0x25, /* jmp indirect */
eac338cf 543 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 544};
545
f604c2a2
L		 546/* Subsequent entries in an absolute lazy procedure linkage table look
547 like this. */
252b5132 548
f604c2a2 549static const bfd_byte elf_i386_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
252b5132
RH		 550{
551 0xff, 0x25, /* jmp indirect */
552 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
553 0x68, /* pushl immediate */
554 0, 0, 0, 0, /* replaced with offset into relocation table. */
555 0xe9, /* jmp relative */
556 0, 0, 0, 0 /* replaced with offset to start of .plt. */
557};
558
f604c2a2
L		 559/* The first entry in a PIC lazy procedure linkage table look like
560 this. Will be padded to LAZY_PLT_ENTRY_SIZE with
561 lazy_plt->plt0_pad_byte. */
252b5132 562
f604c2a2 563static const bfd_byte elf_i386_pic_lazy_plt0_entry[12] =
252b5132
RH		 564{
565 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 566 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 567};
568
f604c2a2
L		 569/* Subsequent entries in a PIC lazy procedure linkage table look like
570 this. */
252b5132 571
f604c2a2 572static const bfd_byte elf_i386_pic_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
252b5132
RH		 573{
574 0xff, 0xa3, /* jmp *offset(%ebx) */
575 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
576 0x68, /* pushl immediate */
577 0, 0, 0, 0, /* replaced with offset into relocation table. */
578 0xe9, /* jmp relative */
579 0, 0, 0, 0 /* replaced with offset to start of .plt. */
580};
581
f604c2a2 582/* Entries in the non-lazy procedure linkage table look like this. */
dd7e64d4 583
f604c2a2 584static const bfd_byte elf_i386_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
dd7e64d4
L		 585{
586 0xff, 0x25, /* jmp indirect */
587 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
588 0x66, 0x90 /* xchg %ax,%ax */
589};
590
f604c2a2
L		 591/* Entries in the PIC non-lazy procedure linkage table look like
592 this. */
dd7e64d4 593
f604c2a2 594static const bfd_byte elf_i386_pic_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
dd7e64d4
L		 595{
596 0xff, 0xa3, /* jmp *offset(%ebx) */
597 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
598 0x66, 0x90 /* xchg %ax,%ax */
599};
600
ee2fdd6f
L		 601/* The first entry in an absolute IBT-enabled lazy procedure linkage
602 table looks like this. */
603
604static const bfd_byte elf_i386_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
605{
606 0xff, 0x35, 0, 0, 0, 0, /* pushl GOT[1] */
607 0xff, 0x25, 0, 0, 0, 0, /* jmp *GOT[2] */
608 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
609};
610
611/* Subsequent entries for an absolute IBT-enabled lazy procedure linkage
612 table look like this. Subsequent entries for a PIC IBT-enabled lazy
613 procedure linkage table are the same. */
614
615static const bfd_byte elf_i386_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
616{
617 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
618 0x68, 0, 0, 0, 0, /* pushl immediate */
619 0xe9, 0, 0, 0, 0, /* jmp relative */
620 0x66, 0x90 /* xchg %ax,%ax */
621};
622
623/* The first entry in a PIC IBT-enabled lazy procedure linkage table
624 look like. */
625
626static const bfd_byte elf_i386_pic_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
627{
628 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
629 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */
630 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
631};
632
633/* Entries for branches with IBT-enabled in the absolute non-lazey
634 procedure linkage table look like this. They have the same size
635 as the lazy PLT entry. */
636
637static const bfd_byte elf_i386_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
638{
639 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
640 0xff, 0x25, 0, 0, 0, 0, /* jmp *name@GOT */
641 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
642};
643
644/* Entries for branches with IBT-enabled in the PIC non-lazey procedure
645 linkage table look like this. They have the same size as the lazy
646 PLT entry. */
647
648static const bfd_byte elf_i386_pic_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
649{
650 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */
651 0xff, 0xa3, 0, 0, 0, 0, /* jmp *name@GOT(%ebx) */
652 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
653};
654
f604c2a2 655/* .eh_frame covering the lazy .plt section. */
e41b3a13 656
f604c2a2 657static const bfd_byte elf_i386_eh_frame_lazy_plt[] =
e41b3a13
JJ		 658{
659#define PLT_CIE_LENGTH 20
660#define PLT_FDE_LENGTH 36
661#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
662#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
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
RM		 827/* Architecture-specific backend data for i386. */
828
829struct elf_i386_backend_data
830{
831 /* Value used to fill the unused bytes of the first PLT entry. */
832 bfd_byte plt0_pad_byte;
833
f604c2a2
L		 834 /* Target system. */
835 enum
836 {
837 is_normal,
838 is_vxworks,
839 is_nacl
840 } os;
23209a78
RM		 841};
842
843#define get_elf_i386_backend_data(abfd) \
844 ((const struct elf_i386_backend_data *) \
845 get_elf_backend_data (abfd)->arch_data)
846
847/* These are the standard parameters. */
848static const struct elf_i386_backend_data elf_i386_arch_bed =
849 {
850 0, /* plt0_pad_byte */
f604c2a2 851 is_normal /* os */
23209a78
RM		 852 };
853
854#define elf_backend_arch_data &elf_i386_arch_bed
855
0ffa91dd
NC		 856#define is_i386_elf(bfd) \
857 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
858 && elf_tdata (bfd) != NULL \
4dfe6ac6 859 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 860
67a4f2b7 861#define elf_i386_compute_jump_table_size(htab) \
998d811a 862 ((htab)->elf.srelplt->reloc_count * 4)
67a4f2b7 863
142411ca
L		 864/* Return TRUE if the TLS access code sequence support transition
865 from R_TYPE. */
866
867static bfd_boolean
bedfd056 868elf_i386_check_tls_transition (asection *sec,
142411ca
L		 869 bfd_byte *contents,
870 Elf_Internal_Shdr *symtab_hdr,
871 struct elf_link_hash_entry **sym_hashes,
872 unsigned int r_type,
873 const Elf_Internal_Rela *rel,
874 const Elf_Internal_Rela *relend)
13ae64f3 875{
6eaa7fb5 876 unsigned int val, type, reg;
142411ca
L		 877 unsigned long r_symndx;
878 struct elf_link_hash_entry *h;
879 bfd_vma offset;
6eaa7fb5 880 bfd_byte *call;
1d4af308 881 bfd_boolean indirect_call;
142411ca 882
142411ca 883 offset = rel->r_offset;
13ae64f3 884 switch (r_type)
142411ca
L		 885 {
886 case R_386_TLS_GD:
887 case R_386_TLS_LDM:
888 if (offset < 2 || (rel + 1) >= relend)
889 return FALSE;
890
6eaa7fb5
L		 891 indirect_call = FALSE;
892 call = contents + offset + 4;
893 val = *(call - 5);
894 type = *(call - 6);
142411ca
L		 895 if (r_type == R_386_TLS_GD)
896 {
09e8c3bf 897 /* Check transition from GD access model. Only
6eaa7fb5
L		 898 leal foo@tlsgd(,%ebx,1), %eax
899 call ___tls_get_addr@PLT
900 or
901 leal foo@tlsgd(%ebx) %eax
902 call ___tls_get_addr@PLT
903 nop
904 or
905 leal foo@tlsgd(%reg), %eax
906 call *___tls_get_addr@GOT(%reg)
907 which may be converted to
908 addr32 call ___tls_get_addr
142411ca 909 can transit to different access model. */
6eaa7fb5
L		 910 if ((offset + 10) > sec->size
911 || (type != 0x8d && type != 0x04))
142411ca
L		 912 return FALSE;
913
142411ca
L		 914 if (type == 0x04)
915 {
6eaa7fb5
L		 916 /* leal foo@tlsgd(,%ebx,1), %eax
917 call ___tls_get_addr@PLT */
142411ca
L		 918 if (offset < 3)
919 return FALSE;
920
6eaa7fb5
L		 921 if (*(call - 7) != 0x8d
922 || val != 0x1d
923 || call[0] != 0xe8)
142411ca
L		 924 return FALSE;
925 }
926 else
927 {
6eaa7fb5
L		 928 /* This must be
929 leal foo@tlsgd(%ebx), %eax
930 call ___tls_get_addr@PLT
931 nop
932 or
933 leal foo@tlsgd(%reg), %eax
934 call *___tls_get_addr@GOT(%reg)
935 which may be converted to
936 addr32 call ___tls_get_addr
937
938 %eax can't be used as the GOT base register since it
939 is used to pass parameter to ___tls_get_addr. */
940 reg = val & 7;
941 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca
L		 942 return FALSE;
943
6eaa7fb5
L		 944 indirect_call = call[0] == 0xff;
945 if (!(reg == 3 && call[0] == 0xe8 && call[5] == 0x90)
946 && !(call[0] == 0x67 && call[1] == 0xe8)
947 && !(indirect_call
948 && (call[1] & 0xf8) == 0x90
949 && (call[1] & 0x7) == reg))
142411ca
L		 950 return FALSE;
951 }
952 }
953 else
954 {
955 /* Check transition from LD access model. Only
6eaa7fb5
L		 956 leal foo@tlsldm(%ebx), %eax
957 call ___tls_get_addr@PLT
958 or
959 leal foo@tlsldm(%reg), %eax
960 call *___tls_get_addr@GOT(%reg)
961 which may be converted to
962 addr32 call ___tls_get_addr
142411ca
L		 963 can transit to different access model. */
964 if (type != 0x8d || (offset + 9) > sec->size)
965 return FALSE;
966
6eaa7fb5
L		 967 /* %eax can't be used as the GOT base register since it is
968 used to pass parameter to ___tls_get_addr. */
969 reg = val & 7;
970 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca 971 return FALSE;
142411ca 972
6eaa7fb5
L		 973 indirect_call = call[0] == 0xff;
974 if (!(reg == 3 && call[0] == 0xe8)
975 && !(call[0] == 0x67 && call[1] == 0xe8)
976 && !(indirect_call
977 && (call[1] & 0xf8) == 0x90
978 && (call[1] & 0x7) == reg))
979 return FALSE;
980 }
142411ca
L		 981
982 r_symndx = ELF32_R_SYM (rel[1].r_info);
983 if (r_symndx < symtab_hdr->sh_info)
984 return FALSE;
985
986 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1d4af308 987 if (h == NULL
0afcef53 988 || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
6eaa7fb5
L		 989 return FALSE;
990 else if (indirect_call)
991 return (ELF32_R_TYPE (rel[1].r_info) == R_386_GOT32X);
992 else
993 return (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
994 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
142411ca
L		 995
996 case R_386_TLS_IE:
997 /* Check transition from IE access model:
998 movl foo@indntpoff(%rip), %eax
999 movl foo@indntpoff(%rip), %reg
1000 addl foo@indntpoff(%rip), %reg
1001 */
1002
1003 if (offset < 1 || (offset + 4) > sec->size)
1004 return FALSE;
1005
1006 /* Check "movl foo@tpoff(%rip), %eax" first. */
1007 val = bfd_get_8 (abfd, contents + offset - 1);
1008 if (val == 0xa1)
1009 return TRUE;
1010
1011 if (offset < 2)
1012 return FALSE;
1013
1014 /* Check movl|addl foo@tpoff(%rip), %reg. */
1015 type = bfd_get_8 (abfd, contents + offset - 2);
1016 return ((type == 0x8b || type == 0x03)
1017 && (val & 0xc7) == 0x05);
1018
1019 case R_386_TLS_GOTIE:
1020 case R_386_TLS_IE_32:
1021 /* Check transition from {IE_32,GOTIE} access model:
1022 subl foo@{tpoff,gontoff}(%reg1), %reg2
1023 movl foo@{tpoff,gontoff}(%reg1), %reg2
1024 addl foo@{tpoff,gontoff}(%reg1), %reg2
1025 */
1026
1027 if (offset < 2 || (offset + 4) > sec->size)
1028 return FALSE;
1029
1030 val = bfd_get_8 (abfd, contents + offset - 1);
1031 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1032 return FALSE;
1033
1034 type = bfd_get_8 (abfd, contents + offset - 2);
1035 return type == 0x8b || type == 0x2b || type == 0x03;
1036
1037 case R_386_TLS_GOTDESC:
1038 /* Check transition from GDesc access model:
1039 leal x@tlsdesc(%ebx), %eax
1040
1041 Make sure it's a leal adding ebx to a 32-bit offset
1042 into any register, although it's probably almost always
1043 going to be eax. */
1044
1045 if (offset < 2 || (offset + 4) > sec->size)
1046 return FALSE;
1047
1048 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1049 return FALSE;
1050
1051 val = bfd_get_8 (abfd, contents + offset - 1);
1052 return (val & 0xc7) == 0x83;
1053
1054 case R_386_TLS_DESC_CALL:
1055 /* Check transition from GDesc access model:
6eaa7fb5 1056 call *x@tlsdesc(%eax)
142411ca
L		 1057 */
1058 if (offset + 2 <= sec->size)
1059 {
6eaa7fb5
L		 1060 /* Make sure that it's a call *x@tlsdesc(%eax). */
1061 call = contents + offset;
1062 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1063 }
1064
1065 return FALSE;
1066
1067 default:
1068 abort ();
1069 }
1070}
1071
1072/* Return TRUE if the TLS access transition is OK or no transition
1073 will be performed. Update R_TYPE if there is a transition. */
1074
1075static bfd_boolean
1076elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1077 asection *sec, bfd_byte *contents,
1078 Elf_Internal_Shdr *symtab_hdr,
1079 struct elf_link_hash_entry **sym_hashes,
1080 unsigned int *r_type, int tls_type,
1081 const Elf_Internal_Rela *rel,
1082 const Elf_Internal_Rela *relend,
4c544807 1083 struct elf_link_hash_entry *h,
bedfd056
L		 1084 unsigned long r_symndx,
1085 bfd_boolean from_relocate_section)
142411ca
L		 1086{
1087 unsigned int from_type = *r_type;
1088 unsigned int to_type = from_type;
1089 bfd_boolean check = TRUE;
1090
bb1cb422
L		 1091 /* Skip TLS transition for functions. */
1092 if (h != NULL
1093 && (h->type == STT_FUNC
1094 || h->type == STT_GNU_IFUNC))
1095 return TRUE;
1096
142411ca 1097 switch (from_type)
13ae64f3
JJ		 1098 {
1099 case R_386_TLS_GD:
67a4f2b7
AO		 1100 case R_386_TLS_GOTDESC:
1101 case R_386_TLS_DESC_CALL:
13ae64f3 1102 case R_386_TLS_IE_32:
37e55690
JJ		 1103 case R_386_TLS_IE:
1104 case R_386_TLS_GOTIE:
0e1862bb 1105 if (bfd_link_executable (info))
142411ca
L		 1106 {
1107 if (h == NULL)
1108 to_type = R_386_TLS_LE_32;
1109 else if (from_type != R_386_TLS_IE
1110 && from_type != R_386_TLS_GOTIE)
1111 to_type = R_386_TLS_IE_32;
1112 }
1113
bedfd056
L		 1114 /* When we are called from elf_i386_relocate_section, there may
1115 be additional transitions based on TLS_TYPE. */
1116 if (from_relocate_section)
142411ca
L		 1117 {
1118 unsigned int new_to_type = to_type;
1119
0e1862bb 1120 if (bfd_link_executable (info)
142411ca
L		 1121 && h != NULL
1122 && h->dynindx == -1
1123 && (tls_type & GOT_TLS_IE))
1124 new_to_type = R_386_TLS_LE_32;
1125
1126 if (to_type == R_386_TLS_GD
1127 || to_type == R_386_TLS_GOTDESC
1128 || to_type == R_386_TLS_DESC_CALL)
1129 {
1130 if (tls_type == GOT_TLS_IE_POS)
1131 new_to_type = R_386_TLS_GOTIE;
1132 else if (tls_type & GOT_TLS_IE)
1133 new_to_type = R_386_TLS_IE_32;
1134 }
1135
1136 /* We checked the transition before when we were called from
1137 elf_i386_check_relocs. We only want to check the new
1138 transition which hasn't been checked before. */
1139 check = new_to_type != to_type && from_type == to_type;
1140 to_type = new_to_type;
1141 }
1142
1143 break;
1144
13ae64f3 1145 case R_386_TLS_LDM:
0e1862bb 1146 if (bfd_link_executable (info))
142411ca
L		 1147 to_type = R_386_TLS_LE_32;
1148 break;
1149
1150 default:
1151 return TRUE;
1152 }
1153
1154 /* Return TRUE if there is no transition. */
1155 if (from_type == to_type)
1156 return TRUE;
1157
1158 /* Check if the transition can be performed. */
1159 if (check
bedfd056 1160 && ! elf_i386_check_tls_transition (sec, contents,
142411ca
L		 1161 symtab_hdr, sym_hashes,
1162 from_type, rel, relend))
1163 {
2f629d23 1164 reloc_howto_type *from, *to;
4c544807 1165 const char *name;
142411ca
L		 1166
1167 from = elf_i386_rtype_to_howto (abfd, from_type);
1168 to = elf_i386_rtype_to_howto (abfd, to_type);
1169
4c544807
L		 1170 if (h)
1171 name = h->root.root.string;
1172 else
1173 {
0afcef53 1174 struct elf_x86_link_hash_table *htab;
4dfe6ac6 1175
0afcef53 1176 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 1177 if (htab == NULL)
1178 name = "*unknown*";
1179 else
1180 {
1181 Elf_Internal_Sym *isym;
1182
1183 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1184 abfd, r_symndx);
1185 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1186 }
4c544807
L		 1187 }
1188
4eca0228 1189 _bfd_error_handler
695344c0 1190 /* xgettext:c-format */
d42c267e 1191 (_("%B: TLS transition from %s to %s against `%s' at %#Lx "
142411ca 1192 "in section `%A' failed"),
c08bb8dd 1193 abfd, from->name, to->name, name,
d42c267e 1194 rel->r_offset, sec);
142411ca
L		 1195 bfd_set_error (bfd_error_bad_value);
1196 return FALSE;
13ae64f3
JJ		 1197 }
1198
142411ca
L		 1199 *r_type = to_type;
1200 return TRUE;
13ae64f3
JJ		 1201}
1202
c175a657
L		 1203/* With the local symbol, foo, we convert
1204 mov foo@GOT[(%reg1)], %reg2
1205 to
1206 lea foo[@GOTOFF(%reg1)], %reg2
1207 and convert
1208 call/jmp *foo@GOT[(%reg)]
1209 to
1210 nop call foo/jmp foo nop
1211 When PIC is false, convert
1212 test %reg1, foo@GOT[(%reg2)]
1213 to
1214 test $foo, %reg1
1215 and convert
1216 binop foo@GOT[(%reg1)], %reg2
1217 to
1218 binop $foo, %reg2
1219 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1220 instructions. */
1221
1222static
1223bfd_boolean
1224elf_i386_convert_load_reloc (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
1225 bfd_byte *contents,
1226 Elf_Internal_Rela *irel,
1227 struct elf_link_hash_entry *h,
1228 bfd_boolean *converted,
1229 struct bfd_link_info *link_info)
1230{
0afcef53 1231 struct elf_x86_link_hash_table *htab;
c175a657
L		 1232 unsigned int opcode;
1233 unsigned int modrm;
1234 bfd_boolean baseless;
1235 Elf_Internal_Sym *isym;
1236 unsigned int addend;
1237 unsigned int nop;
1238 bfd_vma nop_offset;
1239 bfd_boolean is_pic;
1240 bfd_boolean to_reloc_32;
1241 unsigned int r_type;
1242 unsigned int r_symndx;
1243 bfd_vma roff = irel->r_offset;
1244
1245 if (roff < 2)
1246 return TRUE;
1247
7d4d9709 1248 /* Addend for R_386_GOT32X relocations must be 0. */
c175a657
L		 1249 addend = bfd_get_32 (abfd, contents + roff);
1250 if (addend != 0)
1251 return TRUE;
1252
0afcef53 1253 htab = elf_x86_hash_table (link_info, I386_ELF_DATA);
c175a657
L		 1254 is_pic = bfd_link_pic (link_info);
1255
1256 r_type = ELF32_R_TYPE (irel->r_info);
1257 r_symndx = ELF32_R_SYM (irel->r_info);
1258
1259 modrm = bfd_get_8 (abfd, contents + roff - 1);
1260 baseless = (modrm & 0xc7) == 0x5;
1261
7d4d9709 1262 if (baseless && is_pic)
c175a657
L		 1263 {
1264 /* For PIC, disallow R_386_GOT32X without a base register
7d4d9709 1265 since we don't know what the GOT base is. */
c175a657
L		 1266 const char *name;
1267
1268 if (h == NULL)
1269 {
1270 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
1271 r_symndx);
1272 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1273 }
1274 else
1275 name = h->root.root.string;
1276
4eca0228 1277 _bfd_error_handler
695344c0 1278 /* xgettext:c-format */
63a5468a
AM		 1279 (_("%B: direct GOT relocation R_386_GOT32X against `%s' without base"
1280 " register can not be used when making a shared object"),
c175a657
L		 1281 abfd, name);
1282 return FALSE;
1283 }
1284
1285 opcode = bfd_get_8 (abfd, contents + roff - 2);
1286
c175a657
L		 1287 /* Convert to R_386_32 if PIC is false or there is no base
1288 register. */
1289 to_reloc_32 = !is_pic || baseless;
1290
7d4d9709
L		 1291 /* Try to convert R_386_GOT32X. Get the symbol referred to by the
1292 reloc. */
c175a657
L		 1293 if (h == NULL)
1294 {
1295 if (opcode == 0x0ff)
1296 /* Convert "call/jmp *foo@GOT[(%reg)]". */
1297 goto convert_branch;
1298 else
1299 /* Convert "mov foo@GOT[(%reg1)], %reg2",
1300 "test %reg1, foo@GOT(%reg2)" and
1301 "binop foo@GOT[(%reg1)], %reg2". */
1302 goto convert_load;
1303 }
1304
1305 /* Undefined weak symbol is only bound locally in executable
1306 and its reference is resolved as 0. */
0afcef53
L		 1307 if (UNDEFINED_WEAK_RESOLVED_TO_ZERO (link_info, I386_ELF_DATA, TRUE,
1308 elf_x86_hash_entry (h)))
c175a657
L		 1309 {
1310 if (opcode == 0xff)
1311 {
1312 /* No direct branch to 0 for PIC. */
1313 if (is_pic)
1314 return TRUE;
1315 else
1316 goto convert_branch;
1317 }
1318 else
1319 {
1320 /* We can convert load of address 0 to R_386_32. */
1321 to_reloc_32 = TRUE;
1322 goto convert_load;
1323 }
1324 }
1325
1326 if (opcode == 0xff)
1327 {
1328 /* We have "call/jmp *foo@GOT[(%reg)]". */
1329 if ((h->root.type == bfd_link_hash_defined
1330 || h->root.type == bfd_link_hash_defweak)
1331 && SYMBOL_REFERENCES_LOCAL (link_info, h))
1332 {
1333 /* The function is locally defined. */
1334convert_branch:
1335 /* Convert R_386_GOT32X to R_386_PC32. */
1336 if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
1337 {
0afcef53
L		 1338 struct elf_x86_link_hash_entry *eh
1339 = (struct elf_x86_link_hash_entry *) h;
6eaa7fb5 1340
c175a657
L		 1341 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1342 is a nop prefix. */
1343 modrm = 0xe8;
6eaa7fb5
L		 1344 /* To support TLS optimization, always use addr32 prefix
1345 for "call *___tls_get_addr@GOT(%reg)". */
1d4af308 1346 if (eh && eh->tls_get_addr)
c175a657 1347 {
6eaa7fb5
L		 1348 nop = 0x67;
1349 nop_offset = irel->r_offset - 2;
c175a657
L		 1350 }
1351 else
6eaa7fb5
L		 1352 {
1353 nop = link_info->call_nop_byte;
1354 if (link_info->call_nop_as_suffix)
1355 {
1356 nop_offset = roff + 3;
1357 irel->r_offset -= 1;
1358 }
1359 else
1360 nop_offset = roff - 2;
1361 }
c175a657
L		 1362 }
1363 else
1364 {
1365 /* Convert to "jmp foo nop". */
1366 modrm = 0xe9;
1367 nop = NOP_OPCODE;
1368 nop_offset = roff + 3;
1369 irel->r_offset -= 1;
1370 }
1371
1372 bfd_put_8 (abfd, nop, contents + nop_offset);
1373 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1374 /* When converting to PC-relative relocation, we
1375 need to adjust addend by -4. */
1376 bfd_put_32 (abfd, -4, contents + irel->r_offset);
1377 irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
1378
1379 *converted = TRUE;
1380 }
1381 }
1382 else
1383 {
1384 /* We have "mov foo@GOT[(%re1g)], %reg2",
1385 "test %reg1, foo@GOT(%reg2)" and
1386 "binop foo@GOT[(%reg1)], %reg2".
1387
1388 Avoid optimizing _DYNAMIC since ld.so may use its
1389 link-time address. */
1390 if (h == htab->elf.hdynamic)
1391 return TRUE;
1392
1393 /* def_regular is set by an assignment in a linker script in
cbd0eecf
L		 1394 bfd_elf_record_link_assignment. start_stop is set on
1395 __start_SECNAME/__stop_SECNAME which mark section SECNAME. */
1396 if (h->start_stop
1397 || ((h->def_regular
1398 || h->root.type == bfd_link_hash_defined
1399 || h->root.type == bfd_link_hash_defweak)
1400 && SYMBOL_REFERENCES_LOCAL (link_info, h)))
c175a657
L		 1401 {
1402convert_load:
1403 if (opcode == 0x8b)
1404 {
1405 if (to_reloc_32)
1406 {
1407 /* Convert "mov foo@GOT[(%reg1)], %reg2" to
1408 "mov $foo, %reg2" with R_386_32. */
1409 r_type = R_386_32;
1410 modrm = 0xc0 | (modrm & 0x38) >> 3;
1411 bfd_put_8 (abfd, modrm, contents + roff - 1);
1412 opcode = 0xc7;
1413 }
1414 else
1415 {
1416 /* Convert "mov foo@GOT(%reg1), %reg2" to
1417 "lea foo@GOTOFF(%reg1), %reg2". */
1418 r_type = R_386_GOTOFF;
1419 opcode = 0x8d;
1420 }
1421 }
1422 else
1423 {
1424 /* Only R_386_32 is supported. */
1425 if (!to_reloc_32)
1426 return TRUE;
1427
1428 if (opcode == 0x85)
1429 {
1430 /* Convert "test %reg1, foo@GOT(%reg2)" to
1431 "test $foo, %reg1". */
1432 modrm = 0xc0 | (modrm & 0x38) >> 3;
1433 opcode = 0xf7;
1434 }
1435 else
1436 {
1437 /* Convert "binop foo@GOT(%reg1), %reg2" to
1438 "binop $foo, %reg2". */
1439 modrm = (0xc0
1440 | (modrm & 0x38) >> 3
1441 | (opcode & 0x3c));
1442 opcode = 0x81;
1443 }
1444 bfd_put_8 (abfd, modrm, contents + roff - 1);
1445 r_type = R_386_32;
1446 }
1447
1448 bfd_put_8 (abfd, opcode, contents + roff - 2);
1449 irel->r_info = ELF32_R_INFO (r_symndx, r_type);
1450
1451 *converted = TRUE;
1452 }
1453 }
1454
1455 return TRUE;
1456}
1457
c1d11331
L		 1458/* Rename some of the generic section flags to better document how they
1459 are used here. */
c337a162
L		 1460#define need_convert_load sec_flg0
1461#define check_relocs_failed sec_flg1
c1d11331 1462
252b5132 1463/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1464 calculate needed space in the global offset table, procedure linkage
1465 table, and dynamic reloc sections. */
252b5132 1466
b34976b6 1467static bfd_boolean
55fd94b0
AM		 1468elf_i386_check_relocs (bfd *abfd,
1469 struct bfd_link_info *info,
1470 asection *sec,
1471 const Elf_Internal_Rela *relocs)
252b5132 1472{
0afcef53 1473 struct elf_x86_link_hash_table *htab;
252b5132
RH		 1474 Elf_Internal_Shdr *symtab_hdr;
1475 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1476 const Elf_Internal_Rela *rel;
1477 const Elf_Internal_Rela *rel_end;
252b5132 1478 asection *sreloc;
bedfd056 1479 bfd_byte *contents;
252b5132 1480
0e1862bb 1481 if (bfd_link_relocatable (info))
b34976b6 1482 return TRUE;
252b5132 1483
081b1afe
L		 1484 /* Don't do anything special with non-loaded, non-alloced sections.
1485 In particular, any relocs in such sections should not affect GOT
1486 and PLT reference counting (ie. we don't allow them to create GOT
1487 or PLT entries), there's no possibility or desire to optimize TLS
1488 relocs, and there's not much point in propagating relocs to shared
1489 libs that the dynamic linker won't relocate. */
1490 if ((sec->flags & SEC_ALLOC) == 0)
1491 return TRUE;
1492
0ffa91dd
NC		 1493 BFD_ASSERT (is_i386_elf (abfd));
1494
0afcef53 1495 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6 1496 if (htab == NULL)
c337a162
L		 1497 {
1498 sec->check_relocs_failed = 1;
1499 return FALSE;
1500 }
4dfe6ac6 1501
bedfd056
L		 1502 /* Get the section contents. */
1503 if (elf_section_data (sec)->this_hdr.contents != NULL)
1504 contents = elf_section_data (sec)->this_hdr.contents;
1505 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1506 {
1507 sec->check_relocs_failed = 1;
1508 return FALSE;
1509 }
1510
0ffa91dd 1511 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1512 sym_hashes = elf_sym_hashes (abfd);
252b5132 1513
252b5132
RH		 1514 sreloc = NULL;
1515
1516 rel_end = relocs + sec->reloc_count;
1517 for (rel = relocs; rel < rel_end; rel++)
1518 {
13ae64f3 1519 unsigned int r_type;
d42c267e 1520 unsigned int r_symndx;
252b5132 1521 struct elf_link_hash_entry *h;
0afcef53 1522 struct elf_x86_link_hash_entry *eh;
4c544807
L		 1523 Elf_Internal_Sym *isym;
1524 const char *name;
06a6a421 1525 bfd_boolean size_reloc;
252b5132
RH		 1526
1527 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1528 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1529
d9bc7a44 1530 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1531 {
695344c0 1532 /* xgettext:c-format */
4eca0228
AM		 1533 _bfd_error_handler (_("%B: bad symbol index: %d"),
1534 abfd, r_symndx);
c337a162 1535 goto error_return;
f5f31454
L		 1536 }
1537
252b5132 1538 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1539 {
1540 /* A local symbol. */
c2e61a4e
L		 1541 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1542 abfd, r_symndx);
1543 if (isym == NULL)
c337a162 1544 goto error_return;
c25bc9fc
L		 1545
1546 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1547 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1548 {
0afcef53 1549 h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1550 if (h == NULL)
c337a162 1551 goto error_return;
6bbec505 1552
c25bc9fc 1553 /* Fake a STT_GNU_IFUNC symbol. */
6322e5c5
L		 1554 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
1555 isym, NULL);
c25bc9fc
L		 1556 h->type = STT_GNU_IFUNC;
1557 h->def_regular = 1;
1558 h->ref_regular = 1;
1559 h->forced_local = 1;
1560 h->root.type = bfd_link_hash_defined;
1561 }
1562 else
1563 h = NULL;
1564 }
252b5132 1565 else
71cb9464 1566 {
4c544807 1567 isym = NULL;
71cb9464
L		 1568 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1569 while (h->root.type == bfd_link_hash_indirect
1570 || h->root.type == bfd_link_hash_warning)
1571 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1572 }
cbe950e9 1573
0afcef53 1574 eh = (struct elf_x86_link_hash_entry *) h;
c25bc9fc
L		 1575 if (h != NULL)
1576 {
f604c2a2
L		 1577 if (r_type == R_386_GOTOFF)
1578 eh->gotoff_ref = 1;
cbe950e9 1579
ad1e85de
L		 1580 /* It is referenced by a non-shared object. */
1581 h->ref_regular = 1;
bc4e12de 1582 h->root.non_ir_ref_regular = 1;
13a2df29
L		 1583
1584 if (h->type == STT_GNU_IFUNC)
1585 elf_tdata (info->output_bfd)->has_gnu_symbols
1586 |= elf_gnu_symbol_ifunc;
71cb9464 1587 }
252b5132 1588
bedfd056 1589 if (! elf_i386_tls_transition (info, abfd, sec, contents,
142411ca
L		 1590 symtab_hdr, sym_hashes,
1591 &r_type, GOT_UNKNOWN,
bedfd056 1592 rel, rel_end, h, r_symndx, FALSE))
c337a162 1593 goto error_return;
13ae64f3
JJ		 1594
1595 switch (r_type)
252b5132 1596 {
37e55690 1597 case R_386_TLS_LDM:
0afcef53 1598 htab->tls_ld_or_ldm_got.refcount += 1;
37e55690
JJ		 1599 goto create_got;
1600
1601 case R_386_PLT32:
1602 /* This symbol requires a procedure linkage table entry. We
1603 actually build the entry in adjust_dynamic_symbol,
1604 because this might be a case of linking PIC code which is
1605 never referenced by a dynamic object, in which case we
1606 don't need to generate a procedure linkage table entry
1607 after all. */
1608
1609 /* If this is a local symbol, we resolve it directly without
1610 creating a procedure linkage table entry. */
1611 if (h == NULL)
1612 continue;
1613
aec6b87e 1614 eh->has_got_reloc = 1;
f5385ebf 1615 h->needs_plt = 1;
37e55690
JJ		 1616 h->plt.refcount += 1;
1617 break;
1618
6a3e1bae 1619 case R_386_SIZE32:
06a6a421 1620 size_reloc = TRUE;
6a3e1bae
L		 1621 goto do_size;
1622
13ae64f3 1623 case R_386_TLS_IE_32:
37e55690
JJ		 1624 case R_386_TLS_IE:
1625 case R_386_TLS_GOTIE:
0e1862bb 1626 if (!bfd_link_executable (info))
13ae64f3 1627 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1628 /* Fall through */
1629
252b5132 1630 case R_386_GOT32:
02a86693 1631 case R_386_GOT32X:
13ae64f3 1632 case R_386_TLS_GD:
67a4f2b7
AO		 1633 case R_386_TLS_GOTDESC:
1634 case R_386_TLS_DESC_CALL:
252b5132 1635 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1636 {
1637 int tls_type, old_tls_type;
1638
1639 switch (r_type)
1640 {
1641 default:
02a86693
L		 1642 case R_386_GOT32:
1643 case R_386_GOT32X:
1644 tls_type = GOT_NORMAL;
1645 break;
13ae64f3 1646 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1647 case R_386_TLS_GOTDESC:
1648 case R_386_TLS_DESC_CALL:
1649 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1650 case R_386_TLS_IE_32:
1651 if (ELF32_R_TYPE (rel->r_info) == r_type)
1652 tls_type = GOT_TLS_IE_NEG;
1653 else
ebcfb3c0
JJ		 1654 /* If this is a GD->IE transition, we may use either of
1655 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1656 tls_type = GOT_TLS_IE;
1657 break;
1658 case R_386_TLS_IE:
1659 case R_386_TLS_GOTIE:
1660 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1661 }
1662
1663 if (h != NULL)
1664 {
1665 h->got.refcount += 1;
0afcef53 1666 old_tls_type = elf_x86_hash_entry (h)->tls_type;
13ae64f3
JJ		 1667 }
1668 else
1669 {
1670 bfd_signed_vma *local_got_refcounts;
1671
1672 /* This is a global offset table entry for a local symbol. */
1673 local_got_refcounts = elf_local_got_refcounts (abfd);
1674 if (local_got_refcounts == NULL)
1675 {
1676 bfd_size_type size;
1677
1678 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1679 size *= (sizeof (bfd_signed_vma)
1680 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1681 local_got_refcounts = (bfd_signed_vma *)
1682 bfd_zalloc (abfd, size);
13ae64f3 1683 if (local_got_refcounts == NULL)
c337a162 1684 goto error_return;
13ae64f3 1685 elf_local_got_refcounts (abfd) = local_got_refcounts;
0afcef53 1686 elf_x86_local_tlsdesc_gotent (abfd)
67a4f2b7 1687 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
0afcef53 1688 elf_x86_local_got_tls_type (abfd)
67a4f2b7 1689 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1690 }
1691 local_got_refcounts[r_symndx] += 1;
0afcef53 1692 old_tls_type = elf_x86_local_got_tls_type (abfd) [r_symndx];
13ae64f3
JJ		 1693 }
1694
37e55690
JJ		 1695 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1696 tls_type |= old_tls_type;
13ae64f3
JJ		 1697 /* If a TLS symbol is accessed using IE at least once,
1698 there is no point to use dynamic model for it. */
ebcfb3c0 1699 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1700 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1701 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1702 {
67a4f2b7 1703 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1704 tls_type = old_tls_type;
67a4f2b7
AO		 1705 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1706 && GOT_TLS_GD_ANY_P (tls_type))
1707 tls_type |= old_tls_type;
13ae64f3
JJ		 1708 else
1709 {
09a24cbf 1710 if (h)
4c544807
L		 1711 name = h->root.root.string;
1712 else
1713 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1714 NULL);
4eca0228 1715 _bfd_error_handler
695344c0 1716 /* xgettext:c-format */
d003868e 1717 (_("%B: `%s' accessed both as normal and "
55fd94b0 1718 "thread local symbol"),
4c544807 1719 abfd, name);
68c4a57e 1720 bfd_set_error (bfd_error_bad_value);
c337a162 1721 goto error_return;
13ae64f3
JJ		 1722 }
1723 }
1724
1725 if (old_tls_type != tls_type)
1726 {
1727 if (h != NULL)
0afcef53 1728 elf_x86_hash_entry (h)->tls_type = tls_type;
13ae64f3 1729 else
0afcef53 1730 elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
13ae64f3
JJ		 1731 }
1732 }
0ac8d2ca
AM		 1733 /* Fall through */
1734
1735 case R_386_GOTOFF:
1736 case R_386_GOTPC:
13ae64f3 1737 create_got:
37e55690 1738 if (r_type != R_386_TLS_IE)
aec6b87e
L		 1739 {
1740 if (eh != NULL)
1741 eh->has_got_reloc = 1;
1742 break;
1743 }
37e55690 1744 /* Fall through */
252b5132 1745
37e55690
JJ		 1746 case R_386_TLS_LE_32:
1747 case R_386_TLS_LE:
aec6b87e
L		 1748 if (eh != NULL)
1749 eh->has_got_reloc = 1;
0e1862bb 1750 if (bfd_link_executable (info))
37e55690 1751 break;
bffbf940 1752 info->flags |= DF_STATIC_TLS;
aec6b87e 1753 goto do_relocation;
252b5132
RH		 1754
1755 case R_386_32:
1756 case R_386_PC32:
aec6b87e
L		 1757 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
1758 eh->has_non_got_reloc = 1;
1759do_relocation:
bf52d7c7
L		 1760 /* We are called after all symbols have been resolved. Only
1761 relocation against STT_GNU_IFUNC symbol must go through
1762 PLT. */
d1ed1c7d
L		 1763 if (h != NULL
1764 && (bfd_link_executable (info)
bf52d7c7 1765 || h->type == STT_GNU_IFUNC))
6725bdbf 1766 {
12d0ee4a 1767 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1768 need a copy reloc. We can't check reliably at this
1769 stage whether the section is read-only, as input
1770 sections have not yet been mapped to output sections.
1771 Tentatively set the flag for now, and correct in
1772 adjust_dynamic_symbol. */
f5385ebf 1773 h->non_got_ref = 1;
12d0ee4a 1774
233cc9c1
L		 1775 /* We may need a .plt entry if the symbol is a function
1776 defined in a shared lib or is a STT_GNU_IFUNC function
1777 referenced from the code or read-only section. */
34bb2571
L		 1778 if (!h->def_regular
1779 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
233cc9c1
L		 1780 h->plt.refcount += 1;
1781
4b627c18
L		 1782 if (r_type == R_386_PC32)
1783 {
1784 /* Since something like ".long foo - ." may be used
1785 as pointer, make sure that PLT is used if foo is
1786 a function defined in a shared library. */
1787 if ((sec->flags & SEC_CODE) == 0)
1788 h->pointer_equality_needed = 1;
74437ea2
L		 1789 else if (h->type == STT_GNU_IFUNC
1790 && bfd_link_pic (info))
1791 {
6322e5c5
L		 1792 _bfd_error_handler
1793 /* xgettext:c-format */
1794 (_("%B: unsupported non-PIC call to IFUNC `%s'"),
1795 abfd, h->root.root.string);
74437ea2
L		 1796 bfd_set_error (bfd_error_bad_value);
1797 goto error_return;
1798 }
4b627c18
L		 1799 }
1800 else
04ebc307
L		 1801 {
1802 h->pointer_equality_needed = 1;
1803 /* R_386_32 can be resolved at run-time. */
1804 if (r_type == R_386_32
1805 && (sec->flags & SEC_READONLY) == 0)
1806 eh->func_pointer_refcount += 1;
1807 }
6725bdbf 1808 }
7843f00e 1809
06a6a421 1810 size_reloc = FALSE;
6a3e1bae 1811do_size:
252b5132 1812 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1813 against a global symbol, or a non PC relative reloc
1814 against a local symbol, then we need to copy the reloc
1815 into the shared library. However, if we are linking with
1816 -Bsymbolic, we do not need to copy a reloc against a
1817 global symbol which is defined in an object we are
1818 including in the link (i.e., DEF_REGULAR is set). At
1819 this point we have not seen all the input files, so it is
1820 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1821 later (it is never cleared). In case of a weak definition,
1822 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1823 a shared library. We account for that possibility below by
1f655a09
L		 1824 storing information in the relocs_copied field of the hash
1825 table entry. A similar situation occurs when creating
1826 shared libraries and symbol visibility changes render the
12d0ee4a 1827 symbol local.
56882138 1828
12d0ee4a
AM		 1829 If on the other hand, we are creating an executable, we
1830 may need to keep relocations for symbols satisfied by a
1831 dynamic library if we manage to avoid copy relocs for the
233cc9c1
L		 1832 symbol.
1833
1834 Generate dynamic pointer relocation against STT_GNU_IFUNC
1835 symbol in the non-code section. */
081b1afe
L		 1836 if ((bfd_link_pic (info)
1837 && (r_type != R_386_PC32
1838 || (h != NULL
1839 && (! (bfd_link_pie (info)
1840 || SYMBOLIC_BIND (info, h))
1841 || h->root.type == bfd_link_hash_defweak
1842 || !h->def_regular))))
233cc9c1
L		 1843 || (h != NULL
1844 && h->type == STT_GNU_IFUNC
1845 && r_type == R_386_32
1846 && (sec->flags & SEC_CODE) == 0)
081b1afe
L		 1847 || (ELIMINATE_COPY_RELOCS
1848 && !bfd_link_pic (info)
1849 && h != NULL
1850 && (h->root.type == bfd_link_hash_defweak
1851 || !h->def_regular)))
252b5132 1852 {
e03a8ed8
L		 1853 struct elf_dyn_relocs *p;
1854 struct elf_dyn_relocs **head;
ec338859 1855
12d0ee4a
AM		 1856 /* We must copy these reloc types into the output file.
1857 Create a reloc section in dynobj and make room for
1858 this reloc. */
252b5132
RH		 1859 if (sreloc == NULL)
1860 {
83bac4b0
NC		 1861 sreloc = _bfd_elf_make_dynamic_reloc_section
1862 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1863
252b5132 1864 if (sreloc == NULL)
c337a162 1865 goto error_return;
252b5132
RH		 1866 }
1867
0c715baa
AM		 1868 /* If this is a global symbol, we count the number of
1869 relocations we need for this symbol. */
1870 if (h != NULL)
252b5132 1871 {
d5597ebc 1872 head = &eh->dyn_relocs;
0c715baa
AM		 1873 }
1874 else
1875 {
ec338859
AM		 1876 /* Track dynamic relocs needed for local syms too.
1877 We really need local syms available to do this
1878 easily. Oh well. */
87d72d41 1879 void **vpp;
ec338859 1880 asection *s;
87d72d41
AM		 1881
1882 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1883 abfd, r_symndx);
1884 if (isym == NULL)
c337a162 1885 goto error_return;
87d72d41
AM		 1886
1887 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1888 if (s == NULL)
87d72d41 1889 s = sec;
ec338859 1890
e81d3500 1891 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1892 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1893 }
1894
1895 p = *head;
1896 if (p == NULL || p->sec != sec)
1897 {
1898 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1899 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1900 amt);
ec338859 1901 if (p == NULL)
c337a162 1902 goto error_return;
ec338859
AM		 1903 p->next = *head;
1904 *head = p;
1905 p->sec = sec;
1906 p->count = 0;
1907 p->pc_count = 0;
252b5132 1908 }
ec338859
AM		 1909
1910 p->count += 1;
06a6a421
L		 1911 /* Count size relocation as PC-relative relocation. */
1912 if (r_type == R_386_PC32 || size_reloc)
ec338859 1913 p->pc_count += 1;
252b5132 1914 }
252b5132
RH		 1915 break;
1916
1917 /* This relocation describes the C++ object vtable hierarchy.
1918 Reconstruct it for later use during GC. */
1919 case R_386_GNU_VTINHERIT:
d17e0c6e 1920 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c337a162 1921 goto error_return;
252b5132
RH		 1922 break;
1923
1924 /* This relocation describes which C++ vtable entries are actually
1925 used. Record for later use during GC. */
1926 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1927 BFD_ASSERT (h != NULL);
1928 if (h != NULL
1929 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c337a162 1930 goto error_return;
252b5132
RH		 1931 break;
1932
1933 default:
1934 break;
1935 }
dd7e64d4 1936
52bf37dd 1937 if (r_type == R_386_GOT32X
c1d11331 1938 && (h == NULL || h->type != STT_GNU_IFUNC))
02a86693 1939 sec->need_convert_load = 1;
252b5132
RH		 1940 }
1941
bedfd056
L		 1942 if (elf_section_data (sec)->this_hdr.contents != contents)
1943 {
1944 if (!info->keep_memory)
1945 free (contents);
1946 else
1947 {
1948 /* Cache the section contents for elf_link_input_bfd. */
1949 elf_section_data (sec)->this_hdr.contents = contents;
1950 }
1951 }
1952
b34976b6 1953 return TRUE;
c337a162
L		 1954
1955error_return:
bedfd056
L		 1956 if (elf_section_data (sec)->this_hdr.contents != contents)
1957 free (contents);
c337a162
L		 1958 sec->check_relocs_failed = 1;
1959 return FALSE;
252b5132
RH		 1960}
1961
6725bdbf 1962/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 1963 dynamic relocs. */
6725bdbf 1964
b34976b6 1965static bfd_boolean
eb4ff4d6 1966elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 1967{
1968 struct bfd_link_info *info;
0afcef53
L		 1969 struct elf_x86_link_hash_table *htab;
1970 struct elf_x86_link_hash_entry *eh;
e03a8ed8 1971 struct elf_dyn_relocs *p;
25e762b9 1972 unsigned plt_entry_size;
aec6b87e 1973 bfd_boolean resolved_to_zero;
f604c2a2 1974 const struct elf_i386_backend_data *bed;
6725bdbf 1975
e92d460e 1976 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1977 return TRUE;
6725bdbf 1978
0afcef53 1979 eh = (struct elf_x86_link_hash_entry *) h;
e92d460e 1980
6725bdbf 1981 info = (struct bfd_link_info *) inf;
0afcef53 1982 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 1983 if (htab == NULL)
1984 return FALSE;
6725bdbf 1985
f604c2a2
L		 1986 bed = get_elf_i386_backend_data (info->output_bfd);
1987
765e526c 1988 plt_entry_size = htab->plt.plt_entry_size;
25e762b9 1989
e62b9723 1990 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
0afcef53 1991 I386_ELF_DATA,
e62b9723
L		 1992 eh->has_got_reloc,
1993 eh);
aec6b87e 1994
04ebc307
L		 1995 /* Clear the reference count of function pointer relocations if
1996 symbol isn't a normal function. */
1997 if (h->type != STT_FUNC)
1998 eh->func_pointer_refcount = 0;
1999
dd7e64d4
L		 2000 /* We can't use the GOT PLT if pointer equality is needed since
2001 finish_dynamic_symbol won't clear symbol value and the dynamic
2002 linker won't update the GOT slot. We will get into an infinite
2003 loop at run-time. */
2004 if (htab->plt_got != NULL
2005 && h->type != STT_GNU_IFUNC
2006 && !h->pointer_equality_needed
2007 && h->plt.refcount > 0
2008 && h->got.refcount > 0)
2009 {
2010 /* Don't use the regular PLT if there are both GOT and GOTPLT
2011 reloctions. */
2012 h->plt.offset = (bfd_vma) -1;
2013
2014 /* Use the GOT PLT. */
2015 eh->plt_got.refcount = 1;
2016 }
2017
cbe950e9
L		 2018 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2019 here if it is defined and referenced in a non-shared object. */
2020 if (h->type == STT_GNU_IFUNC
2021 && h->def_regular)
ee2fdd6f
L		 2022 {
2023 if (_bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2024 &htab->readonly_dynrelocs_against_ifunc,
2025 plt_entry_size,
765e526c 2026 (htab->plt.has_plt0
0afcef53 2027 * plt_entry_size),
ee2fdd6f
L		 2028 4, TRUE))
2029 {
2030 asection *s = htab->plt_second;
2031 if (h->plt.offset != (bfd_vma) -1 && s != NULL)
2032 {
2033 /* Use the second PLT section if it is created. */
2034 eh->plt_second.offset = s->size;
2035
2036 /* Make room for this entry in the second PLT section. */
765e526c 2037 s->size += htab->non_lazy_plt->plt_entry_size;
ee2fdd6f
L		 2038 }
2039
2040 return TRUE;
2041 }
2042 else
2043 return FALSE;
2044 }
04ebc307
L		 2045 /* Don't create the PLT entry if there are only function pointer
2046 relocations which can be resolved at run-time. */
cbe950e9 2047 else if (htab->elf.dynamic_sections_created
04ebc307
L		 2048 && (h->plt.refcount > eh->func_pointer_refcount
2049 || eh->plt_got.refcount > 0))
6725bdbf 2050 {
dc2be3d2 2051 bfd_boolean use_plt_got = eh->plt_got.refcount > 0;
25070364 2052
04ebc307
L		 2053 /* Clear the reference count of function pointer relocations
2054 if PLT is used. */
2055 eh->func_pointer_refcount = 0;
2056
5a15f56f
AM		 2057 /* Make sure this symbol is output as a dynamic symbol.
2058 Undefined weak syms won't yet be marked as dynamic. */
2059 if (h->dynindx == -1
aec6b87e 2060 && !h->forced_local
0dc9a308
L		 2061 && !resolved_to_zero
2062 && h->root.type == bfd_link_hash_undefweak)
5a15f56f 2063 {
c152c796 2064 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2065 return FALSE;
5a15f56f
AM		 2066 }
2067
0e1862bb 2068 if (bfd_link_pic (info)
4e795f50 2069 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2070 {
6de2ae4a 2071 asection *s = htab->elf.splt;
ee2fdd6f 2072 asection *second_s = htab->plt_second;
dd7e64d4 2073 asection *got_s = htab->plt_got;
6725bdbf 2074
7c1e8d3e
L		 2075 /* If this is the first .plt entry, make room for the special
2076 first entry. The .plt section is used by prelink to undo
2077 prelinking for dynamic relocations. */
2078 if (s->size == 0)
765e526c 2079 s->size = htab->plt.has_plt0 * plt_entry_size;
7c1e8d3e 2080
dd7e64d4
L		 2081 if (use_plt_got)
2082 eh->plt_got.offset = got_s->size;
2083 else
ee2fdd6f
L		 2084 {
2085 h->plt.offset = s->size;
2086 if (second_s)
2087 eh->plt_second.offset = second_s->size;
2088 }
6725bdbf 2089
ced53ee5
AM		 2090 /* If this symbol is not defined in a regular file, and we are
2091 not generating a shared library, then set the symbol to this
2092 location in the .plt. This is required to make function
2093 pointers compare as equal between the normal executable and
2094 the shared library. */
0e1862bb 2095 if (! bfd_link_pic (info)
f5385ebf 2096 && !h->def_regular)
ced53ee5 2097 {
dd7e64d4
L		 2098 if (use_plt_got)
2099 {
2100 /* We need to make a call to the entry of the GOT PLT
2101 instead of regular PLT entry. */
2102 h->root.u.def.section = got_s;
2103 h->root.u.def.value = eh->plt_got.offset;
2104 }
2105 else
2106 {
ee2fdd6f
L		 2107 if (second_s)
2108 {
2109 /* We need to make a call to the entry of the
2110 second PLT instead of regular PLT entry. */
2111 h->root.u.def.section = second_s;
2112 h->root.u.def.value = eh->plt_second.offset;
2113 }
2114 else
2115 {
2116 h->root.u.def.section = s;
2117 h->root.u.def.value = h->plt.offset;
2118 }
dd7e64d4 2119 }
ced53ee5 2120 }
6725bdbf 2121
ced53ee5 2122 /* Make room for this entry. */
dd7e64d4 2123 if (use_plt_got)
765e526c 2124 got_s->size += htab->non_lazy_plt->plt_entry_size;
dd7e64d4
L		 2125 else
2126 {
2127 s->size += plt_entry_size;
ee2fdd6f 2128 if (second_s)
765e526c 2129 second_s->size += htab->non_lazy_plt->plt_entry_size;
6725bdbf 2130
dd7e64d4
L		 2131 /* We also need to make an entry in the .got.plt section,
2132 which will be placed in the .got section by the linker
2133 script. */
2134 htab->elf.sgotplt->size += 4;
6725bdbf 2135
aec6b87e
L		 2136 /* There should be no PLT relocation against resolved
2137 undefined weak symbol in executable. */
2138 if (!resolved_to_zero)
2139 {
2140 /* We also need to make an entry in the .rel.plt
2141 section. */
2142 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2143 htab->elf.srelplt->reloc_count++;
2144 }
dd7e64d4 2145 }
eac338cf 2146
f604c2a2 2147 if (bed->os == is_vxworks && !bfd_link_pic (info))
eac338cf
PB		 2148 {
2149 /* VxWorks has a second set of relocations for each PLT entry
2150 in executables. They go in a separate relocation section,
2151 which is processed by the kernel loader. */
2152
2153 /* There are two relocations for the initial PLT entry: an
2154 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2155 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2156
765e526c 2157 asection *srelplt2 = htab->srelplt2;
25e762b9 2158 if (h->plt.offset == plt_entry_size)
0afcef53 2159 srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
eac338cf
PB		 2160
2161 /* There are two extra relocations for each subsequent PLT entry:
2162 an R_386_32 relocation for the GOT entry, and an R_386_32
2163 relocation for the PLT entry. */
2164
0afcef53 2165 srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
eac338cf 2166 }
6725bdbf 2167 }
ced53ee5
AM		 2168 else
2169 {
13f42277 2170 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2171 h->plt.offset = (bfd_vma) -1;
f5385ebf 2172 h->needs_plt = 0;
ced53ee5 2173 }
6725bdbf
AM		 2174 }
2175 else
2176 {
13f42277 2177 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2178 h->plt.offset = (bfd_vma) -1;
f5385ebf 2179 h->needs_plt = 0;
6725bdbf
AM		 2180 }
2181
67a4f2b7
AO		 2182 eh->tlsdesc_got = (bfd_vma) -1;
2183
37e55690 2184 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2185 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2186 if (h->got.refcount > 0
0e1862bb 2187 && bfd_link_executable (info)
13ae64f3 2188 && h->dynindx == -1
0afcef53 2189 && (elf_x86_hash_entry (h)->tls_type & GOT_TLS_IE))
cedb70c5 2190 h->got.offset = (bfd_vma) -1;
13ae64f3 2191 else if (h->got.refcount > 0)
6725bdbf 2192 {
0ac8d2ca 2193 asection *s;
b34976b6 2194 bfd_boolean dyn;
0afcef53 2195 int tls_type = elf_x86_hash_entry (h)->tls_type;
6725bdbf 2196
5a15f56f 2197 /* Make sure this symbol is output as a dynamic symbol.
0dc9a308 2198 Undefined weak syms won't yet be marked as dynamic. */
5a15f56f 2199 if (h->dynindx == -1
aec6b87e 2200 && !h->forced_local
e133d005 2201 && !resolved_to_zero
0dc9a308 2202 && h->root.type == bfd_link_hash_undefweak)
5a15f56f 2203 {
c152c796 2204 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2205 return FALSE;
5a15f56f
AM		 2206 }
2207
6de2ae4a 2208 s = htab->elf.sgot;
67a4f2b7
AO		 2209 if (GOT_TLS_GDESC_P (tls_type))
2210 {
6de2ae4a 2211 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2212 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2213 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2214 h->got.offset = (bfd_vma) -2;
2215 }
2216 if (! GOT_TLS_GDESC_P (tls_type)
2217 || GOT_TLS_GD_P (tls_type))
2218 {
2219 h->got.offset = s->size;
2220 s->size += 4;
2221 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2222 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2223 s->size += 4;
2224 }
ebe50bae 2225 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2226 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2227 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2228 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2229 need two), R_386_TLS_GD needs one if local symbol and two if
aec6b87e
L		 2230 global. No dynamic relocation against resolved undefined weak
2231 symbol in executable. */
37e55690 2232 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2233 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2234 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2235 || (tls_type & GOT_TLS_IE))
6de2ae4a 2236 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2237 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2238 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2239 else if (! GOT_TLS_GDESC_P (tls_type)
aec6b87e
L		 2240 && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2241 && !resolved_to_zero)
67a4f2b7 2242 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 2243 && (bfd_link_pic (info)
ef5aade5 2244 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2245 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2246 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2247 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2248 }
2249 else
51b64d56 2250 h->got.offset = (bfd_vma) -1;
6725bdbf 2251
5a15f56f 2252 if (eh->dyn_relocs == NULL)
b34976b6 2253 return TRUE;
5a15f56f 2254
0c715baa
AM		 2255 /* In the shared -Bsymbolic case, discard space allocated for
2256 dynamic pc-relative relocs against symbols which turn out to be
2257 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2258 space for pc-relative relocs that have become local due to symbol
2259 visibility changes. */
0c715baa 2260
0e1862bb 2261 if (bfd_link_pic (info))
5a15f56f 2262 {
09695f56
AM		 2263 /* The only reloc that uses pc_count is R_386_PC32, which will
2264 appear on a call or on something like ".long foo - .". We
2265 want calls to protected symbols to resolve directly to the
2266 function rather than going via the plt. If people want
2267 function pointer comparisons to work as expected then they
2268 should avoid writing assembly like ".long foo - .". */
2269 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2270 {
e03a8ed8 2271 struct elf_dyn_relocs **pp;
0c715baa
AM		 2272
2273 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2274 {
c3ce498c
L		 2275 p->count -= p->pc_count;
2276 p->pc_count = 0;
0c715baa
AM		 2277 if (p->count == 0)
2278 *pp = p->next;
2279 else
2280 pp = &p->next;
2281 }
5a15f56f 2282 }
4e795f50 2283
f604c2a2 2284 if (bed->os == is_vxworks)
3348747a 2285 {
e03a8ed8 2286 struct elf_dyn_relocs **pp;
3348747a
NS		 2287 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2288 {
2289 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2290 *pp = p->next;
2291 else
2292 pp = &p->next;
2293 }
2294 }
2295
4e795f50 2296 /* Also discard relocs on undefined weak syms with non-default
aec6b87e 2297 visibility or in PIE. */
22d606e9 2298 if (eh->dyn_relocs != NULL
c353e543 2299 && h->root.type == bfd_link_hash_undefweak)
22d606e9 2300 {
aec6b87e
L		 2301 /* Undefined weak symbol is never bound locally in shared
2302 library. */
2303 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2304 || resolved_to_zero)
2305 {
2306 if (h->non_got_ref)
2307 {
2308 /* Keep dynamic non-GOT/non-PLT relocation so that we
2309 can branch to 0 without PLT. */
2310 struct elf_dyn_relocs **pp;
2311
2312 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2313 if (p->pc_count == 0)
2314 *pp = p->next;
2315 else
2316 {
2317 /* Remove non-R_386_PC32 relocation. */
2318 p->count = p->pc_count;
2319 pp = &p->next;
2320 }
22d606e9 2321
aec6b87e
L		 2322 if (eh->dyn_relocs != NULL)
2323 {
2324 /* Make sure undefined weak symbols are output
2325 as dynamic symbols in PIEs for dynamic non-GOT
2326 non-PLT reloations. */
2327 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2328 return FALSE;
2329 }
2330 }
2331 else
2332 eh->dyn_relocs = NULL;
2333 }
22d606e9
AM		 2334 else if (h->dynindx == -1
2335 && !h->forced_local)
2336 {
2337 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2338 return FALSE;
2339 }
2340 }
0c715baa 2341 }
a23b6845 2342 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2343 {
2344 /* For the non-shared case, discard space for relocs against
2345 symbols which turn out to need copy relocs or are not
04ebc307
L		 2346 dynamic. Keep dynamic relocations for run-time function
2347 pointer initialization. */
0c715baa 2348
aec6b87e
L		 2349 if ((!h->non_got_ref
2350 || eh->func_pointer_refcount > 0
2351 || (h->root.type == bfd_link_hash_undefweak
2352 && !resolved_to_zero))
f5385ebf
AM		 2353 && ((h->def_dynamic
2354 && !h->def_regular)
ebe50bae 2355 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2356 && (h->root.type == bfd_link_hash_undefweak
2357 || h->root.type == bfd_link_hash_undefined))))
2358 {
2359 /* Make sure this symbol is output as a dynamic symbol.
2360 Undefined weak syms won't yet be marked as dynamic. */
2361 if (h->dynindx == -1
aec6b87e 2362 && !h->forced_local
0dc9a308
L		 2363 && !resolved_to_zero
2364 && h->root.type == bfd_link_hash_undefweak)
0c715baa 2365 {
c152c796 2366 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2367 return FALSE;
0c715baa 2368 }
5a15f56f 2369
0c715baa
AM		 2370 /* If that succeeded, we know we'll be keeping all the
2371 relocs. */
2372 if (h->dynindx != -1)
2373 goto keep;
2374 }
2375
2376 eh->dyn_relocs = NULL;
04ebc307 2377 eh->func_pointer_refcount = 0;
0c715baa 2378
ec338859 2379 keep: ;
5a15f56f
AM		 2380 }
2381
0c715baa
AM		 2382 /* Finally, allocate space. */
2383 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2384 {
e7c33416
NC		 2385 asection *sreloc;
2386
cbe950e9 2387 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2388
2389 BFD_ASSERT (sreloc != NULL);
eea6121a 2390 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2391 }
2392
b34976b6 2393 return TRUE;
6725bdbf
AM		 2394}
2395
c25bc9fc
L		 2396/* Allocate space in .plt, .got and associated reloc sections for
2397 local dynamic relocs. */
2398
2399static bfd_boolean
2400elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2401{
2402 struct elf_link_hash_entry *h
2403 = (struct elf_link_hash_entry *) *slot;
2404
2405 if (h->type != STT_GNU_IFUNC
2406 || !h->def_regular
2407 || !h->ref_regular
2408 || !h->forced_local
2409 || h->root.type != bfd_link_hash_defined)
2410 abort ();
2411
2412 return elf_i386_allocate_dynrelocs (h, inf);
2413}
2414
c175a657 2415/* Convert load via the GOT slot to load immediate. */
daa67607
L		 2416
2417static bfd_boolean
02a86693 2418elf_i386_convert_load (bfd *abfd, asection *sec,
a6af384b 2419 struct bfd_link_info *link_info)
daa67607 2420{
0afcef53 2421 struct elf_x86_link_hash_table *htab;
daa67607
L		 2422 Elf_Internal_Shdr *symtab_hdr;
2423 Elf_Internal_Rela *internal_relocs;
2424 Elf_Internal_Rela *irel, *irelend;
2425 bfd_byte *contents;
c175a657 2426 bfd_boolean changed;
daa67607
L		 2427 bfd_signed_vma *local_got_refcounts;
2428
2429 /* Don't even try to convert non-ELF outputs. */
2430 if (!is_elf_hash_table (link_info->hash))
2431 return FALSE;
2432
c1d11331 2433 /* Nothing to do if there is no need or no output. */
daa67607 2434 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
02a86693 2435 || sec->need_convert_load == 0
c8831961 2436 || bfd_is_abs_section (sec->output_section))
daa67607
L		 2437 return TRUE;
2438
2439 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2440
2441 /* Load the relocations for this section. */
2442 internal_relocs = (_bfd_elf_link_read_relocs
2443 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2444 link_info->keep_memory));
2445 if (internal_relocs == NULL)
2446 return FALSE;
2447
c175a657 2448 changed = FALSE;
0afcef53 2449 htab = elf_x86_hash_table (link_info, I386_ELF_DATA);
daa67607
L		 2450 local_got_refcounts = elf_local_got_refcounts (abfd);
2451
2452 /* Get the section contents. */
2453 if (elf_section_data (sec)->this_hdr.contents != NULL)
2454 contents = elf_section_data (sec)->this_hdr.contents;
2455 else
2456 {
2457 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2458 goto error_return;
2459 }
2460
2461 irelend = internal_relocs + sec->reloc_count;
2462 for (irel = internal_relocs; irel < irelend; irel++)
2463 {
2464 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
c175a657 2465 unsigned int r_symndx;
daa67607 2466 struct elf_link_hash_entry *h;
c175a657 2467 bfd_boolean converted;
daa67607 2468
7d4d9709
L		 2469 /* Don't convert R_386_GOT32 since we can't tell if it is applied
2470 to "mov $foo@GOT, %reg" which isn't a load via GOT. */
2471 if (r_type != R_386_GOT32X)
daa67607
L		 2472 continue;
2473
c175a657 2474 r_symndx = ELF32_R_SYM (irel->r_info);
02a86693 2475 if (r_symndx < symtab_hdr->sh_info)
0afcef53
L		 2476 h = _bfd_elf_x86_get_local_sym_hash (htab, sec->owner,
2477 (const Elf_Internal_Rela *) irel,
2478 FALSE);
c175a657 2479 else
02a86693 2480 {
c175a657
L		 2481 h = elf_sym_hashes (abfd)[r_symndx - symtab_hdr->sh_info];
2482 while (h->root.type == bfd_link_hash_indirect
2483 || h->root.type == bfd_link_hash_warning)
2484 h = (struct elf_link_hash_entry *) h->root.u.i.link;
daa67607
L		 2485 }
2486
02a86693 2487 /* STT_GNU_IFUNC must keep GOT32 relocations. */
c175a657 2488 if (h != NULL && h->type == STT_GNU_IFUNC)
02a86693
L		 2489 continue;
2490
c175a657
L		 2491 converted = FALSE;
2492 if (!elf_i386_convert_load_reloc (abfd, symtab_hdr, contents,
2493 irel, h, &converted, link_info))
2494 goto error_return;
bae420ef 2495
c175a657 2496 if (converted)
02a86693 2497 {
c175a657
L		 2498 changed = converted;
2499 if (h)
02a86693 2500 {
c175a657
L		 2501 if (h->got.refcount > 0)
2502 h->got.refcount -= 1;
02a86693 2503 }
c175a657 2504 else
02a86693 2505 {
c175a657
L		 2506 if (local_got_refcounts != NULL
2507 && local_got_refcounts[r_symndx] > 0)
2508 local_got_refcounts[r_symndx] -= 1;
02a86693 2509 }
daa67607
L		 2510 }
2511 }
2512
2513 if (contents != NULL
2514 && elf_section_data (sec)->this_hdr.contents != contents)
2515 {
c175a657 2516 if (!changed && !link_info->keep_memory)
daa67607
L		 2517 free (contents);
2518 else
2519 {
2520 /* Cache the section contents for elf_link_input_bfd. */
2521 elf_section_data (sec)->this_hdr.contents = contents;
2522 }
2523 }
2524
2525 if (elf_section_data (sec)->relocs != internal_relocs)
2526 {
c175a657 2527 if (!changed)
daa67607
L		 2528 free (internal_relocs);
2529 else
2530 elf_section_data (sec)->relocs = internal_relocs;
2531 }
2532
2533 return TRUE;
2534
2535 error_return:
2536 if (contents != NULL
2537 && elf_section_data (sec)->this_hdr.contents != contents)
2538 free (contents);
2539 if (internal_relocs != NULL
2540 && elf_section_data (sec)->relocs != internal_relocs)
2541 free (internal_relocs);
2542 return FALSE;
2543}
2544
252b5132
RH		 2545/* Set the sizes of the dynamic sections. */
2546
b34976b6 2547static bfd_boolean
23209a78 2548elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2549{
0afcef53 2550 struct elf_x86_link_hash_table *htab;
252b5132
RH		 2551 bfd *dynobj;
2552 asection *s;
b34976b6 2553 bfd_boolean relocs;
0c715baa 2554 bfd *ibfd;
252b5132 2555
0afcef53 2556 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 2557 if (htab == NULL)
2558 return FALSE;
ebe50bae 2559 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2560 if (dynobj == NULL)
2561 abort ();
252b5132 2562
0c715baa
AM		 2563 /* Set up .got offsets for local syms, and space for local dynamic
2564 relocs. */
c72f2fb2 2565 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 2566 {
2567 bfd_signed_vma *local_got;
2568 bfd_signed_vma *end_local_got;
13ae64f3 2569 char *local_tls_type;
67a4f2b7 2570 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2571 bfd_size_type locsymcount;
2572 Elf_Internal_Shdr *symtab_hdr;
2573 asection *srel;
6725bdbf 2574
0ffa91dd 2575 if (! is_i386_elf (ibfd))
161d71a6 2576 continue;
6725bdbf 2577
0c715baa
AM		 2578 for (s = ibfd->sections; s != NULL; s = s->next)
2579 {
e03a8ed8 2580 struct elf_dyn_relocs *p;
0c715baa 2581
02a86693 2582 if (!elf_i386_convert_load (ibfd, s, info))
daa67607
L		 2583 return FALSE;
2584
e03a8ed8 2585 for (p = ((struct elf_dyn_relocs *)
e81d3500 2586 elf_section_data (s)->local_dynrel);
ec338859
AM		 2587 p != NULL;
2588 p = p->next)
0c715baa 2589 {
ec338859
AM		 2590 if (!bfd_is_abs_section (p->sec)
2591 && bfd_is_abs_section (p->sec->output_section))
2592 {
2593 /* Input section has been discarded, either because
2594 it is a copy of a linkonce section or due to
2595 linker script /DISCARD/, so we'll be discarding
2596 the relocs too. */
2597 }
f604c2a2
L		 2598 else if ((get_elf_i386_backend_data (output_bfd)->os
2599 == is_vxworks)
3348747a
NS		 2600 && strcmp (p->sec->output_section->name,
2601 ".tls_vars") == 0)
2602 {
2603 /* Relocations in vxworks .tls_vars sections are
2604 handled specially by the loader. */
2605 }
248866a8 2606 else if (p->count != 0)
ec338859
AM		 2607 {
2608 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2609 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2610 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2611 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2612 {
2613 info->flags |= DF_TEXTREL;
0e1862bb 2614 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd 2615 || info->error_textrel)
695344c0 2616 /* xgettext:c-format */
1952c5cd 2617 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 2618 p->sec->owner, p->sec);
b70321a2 2619 }
ec338859 2620 }
0c715baa
AM		 2621 }
2622 }
2623
2624 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2625 if (!local_got)
2626 continue;
6725bdbf 2627
0ffa91dd 2628 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2629 locsymcount = symtab_hdr->sh_info;
2630 end_local_got = local_got + locsymcount;
0afcef53
L		 2631 local_tls_type = elf_x86_local_got_tls_type (ibfd);
2632 local_tlsdesc_gotent = elf_x86_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2633 s = htab->elf.sgot;
2634 srel = htab->elf.srelgot;
67a4f2b7
AO		 2635 for (; local_got < end_local_got;
2636 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2637 {
67a4f2b7 2638 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2639 if (*local_got > 0)
6725bdbf 2640 {
67a4f2b7
AO		 2641 if (GOT_TLS_GDESC_P (*local_tls_type))
2642 {
6de2ae4a 2643 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2644 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2645 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2646 *local_got = (bfd_vma) -2;
2647 }
2648 if (! GOT_TLS_GDESC_P (*local_tls_type)
2649 || GOT_TLS_GD_P (*local_tls_type))
2650 {
2651 *local_got = s->size;
2652 s->size += 4;
2653 if (GOT_TLS_GD_P (*local_tls_type)
2654 || *local_tls_type == GOT_TLS_IE_BOTH)
2655 s->size += 4;
2656 }
0e1862bb 2657 if (bfd_link_pic (info)
67a4f2b7 2658 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2659 || (*local_tls_type & GOT_TLS_IE))
2660 {
2661 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2662 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2663 else if (GOT_TLS_GD_P (*local_tls_type)
2664 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2665 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2666 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2667 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2668 }
6725bdbf 2669 }
161d71a6
L		 2670 else
2671 *local_got = (bfd_vma) -1;
6725bdbf 2672 }
252b5132 2673 }
6725bdbf 2674
0afcef53 2675 if (htab->tls_ld_or_ldm_got.refcount > 0)
13ae64f3
JJ		 2676 {
2677 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2678 relocs. */
0afcef53 2679 htab->tls_ld_or_ldm_got.offset = htab->elf.sgot->size;
6de2ae4a
L		 2680 htab->elf.sgot->size += 8;
2681 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2682 }
2683 else
0afcef53 2684 htab->tls_ld_or_ldm_got.offset = -1;
13ae64f3 2685
0c715baa
AM		 2686 /* Allocate global sym .plt and .got entries, and space for global
2687 sym dynamic relocs. */
eb4ff4d6 2688 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2689
c25bc9fc
L		 2690 /* Allocate .plt and .got entries, and space for local symbols. */
2691 htab_traverse (htab->loc_hash_table,
2692 elf_i386_allocate_local_dynrelocs,
2693 info);
2694
67a4f2b7
AO		 2695 /* For every jump slot reserved in the sgotplt, reloc_count is
2696 incremented. However, when we reserve space for TLS descriptors,
2697 it's not incremented, so in order to compute the space reserved
2698 for them, it suffices to multiply the reloc count by the jump
e1f98742 2699 slot size.
caa0075c 2700
e1f98742
L		 2701 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2702 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2703 if (htab->elf.srelplt)
e1f98742 2704 {
765e526c
L		 2705 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2706 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
e1f98742
L		 2707 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2708 }
2709 else if (htab->elf.irelplt)
2710 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2711
67a4f2b7 2712
a7b16ceb
L		 2713 if (htab->elf.sgotplt)
2714 {
2715 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2716 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2717 if ((htab->elf.hgot == NULL
2718 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2719 && (htab->elf.sgotplt->size
2720 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2721 && (htab->elf.splt == NULL
2722 || htab->elf.splt->size == 0)
2723 && (htab->elf.sgot == NULL
2724 || htab->elf.sgot->size == 0)
2725 && (htab->elf.iplt == NULL
2726 || htab->elf.iplt->size == 0)
2727 && (htab->elf.igotplt == NULL
2728 || htab->elf.igotplt->size == 0))
2729 htab->elf.sgotplt->size = 0;
2730 }
2731
fff53dae
L		 2732 if (_bfd_elf_eh_frame_present (info))
2733 {
2734 if (htab->plt_eh_frame != NULL
2735 && htab->elf.splt != NULL
2736 && htab->elf.splt->size != 0
2737 && !bfd_is_abs_section (htab->elf.splt->output_section))
765e526c 2738 htab->plt_eh_frame->size = htab->plt.eh_frame_plt_size;
fff53dae
L		 2739
2740 if (htab->plt_got_eh_frame != NULL
2741 && htab->plt_got != NULL
2742 && htab->plt_got->size != 0
2743 && !bfd_is_abs_section (htab->plt_got->output_section))
2744 htab->plt_got_eh_frame->size
765e526c 2745 = htab->non_lazy_plt->eh_frame_plt_size;
ee2fdd6f
L		 2746
2747 /* Unwind info for the second PLT and .plt.got sections are
2748 identical. */
2749 if (htab->plt_second_eh_frame != NULL
2750 && htab->plt_second != NULL
2751 && htab->plt_second->size != 0
2752 && !bfd_is_abs_section (htab->plt_second->output_section))
2753 htab->plt_second_eh_frame->size
765e526c 2754 = htab->non_lazy_plt->eh_frame_plt_size;
fff53dae 2755 }
9a2a56cc 2756
5a15f56f
AM		 2757 /* We now have determined the sizes of the various dynamic sections.
2758 Allocate memory for them. */
b34976b6 2759 relocs = FALSE;
252b5132
RH		 2760 for (s = dynobj->sections; s != NULL; s = s->next)
2761 {
eac338cf
PB		 2762 bfd_boolean strip_section = TRUE;
2763
252b5132
RH		 2764 if ((s->flags & SEC_LINKER_CREATED) == 0)
2765 continue;
2766
6de2ae4a 2767 if (s == htab->elf.splt
9a2a56cc 2768 || s == htab->elf.sgot)
252b5132 2769 {
6725bdbf
AM		 2770 /* Strip this section if we don't need it; see the
2771 comment below. */
eac338cf
PB		 2772 /* We'd like to strip these sections if they aren't needed, but if
2773 we've exported dynamic symbols from them we must leave them.
2774 It's too late to tell BFD to get rid of the symbols. */
2775
7325306f 2776 if (htab->elf.hplt != NULL)
eac338cf 2777 strip_section = FALSE;
252b5132 2778 }
9a2a56cc
AM		 2779 else if (s == htab->elf.sgotplt
2780 || s == htab->elf.iplt
2781 || s == htab->elf.igotplt
ee2fdd6f 2782 || s == htab->plt_second
dd7e64d4 2783 || s == htab->plt_got
9a2a56cc 2784 || s == htab->plt_eh_frame
fff53dae 2785 || s == htab->plt_got_eh_frame
ee2fdd6f 2786 || s == htab->plt_second_eh_frame
5474d94f
AM		 2787 || s == htab->elf.sdynbss
2788 || s == htab->elf.sdynrelro)
9a2a56cc
AM		 2789 {
2790 /* Strip these too. */
2791 }
0112cd26 2792 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2793 {
6de2ae4a
L		 2794 if (s->size != 0
2795 && s != htab->elf.srelplt
765e526c 2796 && s != htab->srelplt2)
b34976b6 2797 relocs = TRUE;
252b5132 2798
0ac8d2ca
AM		 2799 /* We use the reloc_count field as a counter if we need
2800 to copy relocs into the output file. */
5ae0bfb6 2801 s->reloc_count = 0;
252b5132 2802 }
6725bdbf 2803 else
252b5132
RH		 2804 {
2805 /* It's not one of our sections, so don't allocate space. */
2806 continue;
2807 }
2808
c456f082 2809 if (s->size == 0)
252b5132 2810 {
0ac8d2ca
AM		 2811 /* If we don't need this section, strip it from the
2812 output file. This is mostly to handle .rel.bss and
2813 .rel.plt. We must create both sections in
2814 create_dynamic_sections, because they must be created
2815 before the linker maps input sections to output
2816 sections. The linker does that before
2817 adjust_dynamic_symbol is called, and it is that
2818 function which decides whether anything needs to go
2819 into these sections. */
c456f082
AM		 2820 if (strip_section)
2821 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2822 continue;
2823 }
2824
c456f082
AM		 2825 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2826 continue;
2827
f69da49f
AM		 2828 /* Allocate memory for the section contents. We use bfd_zalloc
2829 here in case unused entries are not reclaimed before the
2830 section's contents are written out. This should not happen,
2831 but this way if it does, we get a R_386_NONE reloc instead
2832 of garbage. */
a50b1753 2833 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2834 if (s->contents == NULL)
b34976b6 2835 return FALSE;
252b5132
RH		 2836 }
2837
e41b3a13 2838 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 2839 && htab->plt_eh_frame->contents != NULL)
2840 {
f129e49f 2841 memcpy (htab->plt_eh_frame->contents,
765e526c 2842 htab->plt.eh_frame_plt,
f129e49f 2843 htab->plt_eh_frame->size);
9a2a56cc
AM		 2844 bfd_put_32 (dynobj, htab->elf.splt->size,
2845 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2846 }
e41b3a13 2847
fff53dae
L		 2848 if (htab->plt_got_eh_frame != NULL
2849 && htab->plt_got_eh_frame->contents != NULL)
2850 {
2851 memcpy (htab->plt_got_eh_frame->contents,
765e526c 2852 htab->non_lazy_plt->eh_frame_plt,
fff53dae
L		 2853 htab->plt_got_eh_frame->size);
2854 bfd_put_32 (dynobj, htab->plt_got->size,
2855 (htab->plt_got_eh_frame->contents
2856 + PLT_FDE_LEN_OFFSET));
2857 }
2858
ee2fdd6f
L		 2859 if (htab->plt_second_eh_frame != NULL
2860 && htab->plt_second_eh_frame->contents != NULL)
2861 {
2862 memcpy (htab->plt_second_eh_frame->contents,
765e526c 2863 htab->non_lazy_plt->eh_frame_plt,
ee2fdd6f
L		 2864 htab->plt_second_eh_frame->size);
2865 bfd_put_32 (dynobj, htab->plt_second->size,
2866 (htab->plt_second_eh_frame->contents
2867 + PLT_FDE_LEN_OFFSET));
2868 }
2869
ebe50bae 2870 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2871 {
2872 /* Add some entries to the .dynamic section. We fill in the
2873 values later, in elf_i386_finish_dynamic_sections, but we
2874 must add the entries now so that we get the correct size for
2875 the .dynamic section. The DT_DEBUG entry is filled in by the
2876 dynamic linker and used by the debugger. */
dc810e39 2877#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2878 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2879
0e1862bb 2880 if (bfd_link_executable (info))
252b5132 2881 {
dc810e39 2882 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2883 return FALSE;
252b5132
RH		 2884 }
2885
6de2ae4a 2886 if (htab->elf.splt->size != 0)
252b5132 2887 {
7c1e8d3e
L		 2888 /* DT_PLTGOT is used by prelink even if there is no PLT
2889 relocation. */
2890 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 2891 return FALSE;
97d343d4 2892 }
7c1e8d3e 2893
97d343d4
L		 2894 if (htab->elf.srelplt->size != 0)
2895 {
2896 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2897 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2898 || !add_dynamic_entry (DT_JMPREL, 0))
2899 return FALSE;
252b5132
RH		 2900 }
2901
2902 if (relocs)
2903 {
dc810e39
AM		 2904 if (!add_dynamic_entry (DT_REL, 0)
2905 || !add_dynamic_entry (DT_RELSZ, 0)
2906 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2907 return FALSE;
252b5132 2908
0c715baa
AM		 2909 /* If any dynamic relocs apply to a read-only section,
2910 then we need a DT_TEXTREL entry. */
248866a8 2911 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6 2912 elf_link_hash_traverse (&htab->elf,
0afcef53
L		 2913 _bfd_x86_elf_readonly_dynrelocs,
2914 info);
0c715baa
AM		 2915
2916 if ((info->flags & DF_TEXTREL) != 0)
2917 {
2df3368d 2918 if (htab->readonly_dynrelocs_against_ifunc)
8efa2874
L		 2919 {
2920 info->callbacks->einfo
2921 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
2922 bfd_set_error (bfd_error_bad_value);
2923 return FALSE;
2924 }
2925
0c715baa 2926 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2927 return FALSE;
0c715baa 2928 }
252b5132 2929 }
f604c2a2 2930 if (get_elf_i386_backend_data (output_bfd)->os == is_vxworks
7a2b07ff
NS		 2931 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2932 return FALSE;
252b5132 2933 }
dc810e39 2934#undef add_dynamic_entry
252b5132 2935
b34976b6 2936 return TRUE;
252b5132
RH		 2937}
2938
38701953
AM		 2939/* Set the correct type for an x86 ELF section. We do this by the
2940 section name, which is a hack, but ought to work. */
2941
b34976b6 2942static bfd_boolean
55fd94b0
AM		 2943elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2944 Elf_Internal_Shdr *hdr,
2945 asection *sec)
38701953 2946{
91d6fa6a 2947 const char *name;
38701953
AM		 2948
2949 name = bfd_get_section_name (abfd, sec);
2950
2951 /* This is an ugly, but unfortunately necessary hack that is
2952 needed when producing EFI binaries on x86. It tells
2953 elf.c:elf_fake_sections() not to consider ".reloc" as a section
2954 containing ELF relocation info. We need this hack in order to
2955 be able to generate ELF binaries that can be translated into
2956 EFI applications (which are essentially COFF objects). Those
2957 files contain a COFF ".reloc" section inside an ELFNN object,
2958 which would normally cause BFD to segfault because it would
2959 attempt to interpret this section as containing relocation
2960 entries for section "oc". With this hack enabled, ".reloc"
2961 will be treated as a normal data section, which will avoid the
2962 segfault. However, you won't be able to create an ELFNN binary
2963 with a section named "oc" that needs relocations, but that's
2964 the kind of ugly side-effects you get when detecting section
2965 types based on their names... In practice, this limitation is
2966 unlikely to bite. */
2967 if (strcmp (name, ".reloc") == 0)
2968 hdr->sh_type = SHT_PROGBITS;
2969
b34976b6 2970 return TRUE;
38701953
AM		 2971}
2972
13ae64f3
JJ		 2973/* Return the relocation value for @tpoff relocation
2974 if STT_TLS virtual address is ADDRESS. */
2975
2976static bfd_vma
eb4ff4d6 2977elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 2978{
e1918d23 2979 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 2980 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2981 bfd_vma static_tls_size;
13ae64f3 2982
e1918d23
AM		 2983 /* If tls_sec is NULL, we should have signalled an error already. */
2984 if (htab->tls_sec == NULL)
6a30718d 2985 return 0;
7dc98aea
RO		 2986
2987 /* Consider special static TLS alignment requirements. */
2988 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2989 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 2990}
2991
252b5132
RH		 2992/* Relocate an i386 ELF section. */
2993
b34976b6 2994static bfd_boolean
55fd94b0
AM		 2995elf_i386_relocate_section (bfd *output_bfd,
2996 struct bfd_link_info *info,
2997 bfd *input_bfd,
2998 asection *input_section,
2999 bfd_byte *contents,
3000 Elf_Internal_Rela *relocs,
3001 Elf_Internal_Sym *local_syms,
3002 asection **local_sections)
252b5132 3003{
0afcef53 3004 struct elf_x86_link_hash_table *htab;
252b5132
RH		 3005 Elf_Internal_Shdr *symtab_hdr;
3006 struct elf_link_hash_entry **sym_hashes;
3007 bfd_vma *local_got_offsets;
67a4f2b7 3008 bfd_vma *local_tlsdesc_gotents;
252b5132 3009 Elf_Internal_Rela *rel;
60f2e42e 3010 Elf_Internal_Rela *wrel;
252b5132 3011 Elf_Internal_Rela *relend;
3348747a 3012 bfd_boolean is_vxworks_tls;
25e762b9 3013 unsigned plt_entry_size;
252b5132 3014
0ffa91dd 3015 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3016
c337a162
L		 3017 /* Skip if check_relocs failed. */
3018 if (input_section->check_relocs_failed)
3019 return FALSE;
3020
0afcef53 3021 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 3022 if (htab == NULL)
3023 return FALSE;
0ffa91dd 3024 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3025 sym_hashes = elf_sym_hashes (input_bfd);
3026 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 3027 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3028 /* We have to handle relocations in vxworks .tls_vars sections
3029 specially, because the dynamic loader is 'weird'. */
f604c2a2
L		 3030 is_vxworks_tls = ((get_elf_i386_backend_data (output_bfd)->os
3031 == is_vxworks)
0e1862bb 3032 && bfd_link_pic (info)
3348747a
NS		 3033 && !strcmp (input_section->output_section->name,
3034 ".tls_vars"));
252b5132 3035
0afcef53 3036 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 3037
765e526c 3038 plt_entry_size = htab->plt.plt_entry_size;
25e762b9 3039
60f2e42e 3040 rel = wrel = relocs;
252b5132 3041 relend = relocs + input_section->reloc_count;
60f2e42e 3042 for (; rel < relend; wrel++, rel++)
252b5132 3043 {
13ae64f3 3044 unsigned int r_type;
252b5132
RH		 3045 reloc_howto_type *howto;
3046 unsigned long r_symndx;
3047 struct elf_link_hash_entry *h;
0afcef53 3048 struct elf_x86_link_hash_entry *eh;
252b5132
RH		 3049 Elf_Internal_Sym *sym;
3050 asection *sec;
dd7e64d4 3051 bfd_vma off, offplt, plt_offset;
252b5132 3052 bfd_vma relocation;
b34976b6 3053 bfd_boolean unresolved_reloc;
252b5132 3054 bfd_reloc_status_type r;
1b452ec6 3055 unsigned int indx;
13ae64f3 3056 int tls_type;
1788fc08 3057 bfd_vma st_size;
dd7e64d4 3058 asection *resolved_plt;
aec6b87e 3059 bfd_boolean resolved_to_zero;
e133d005 3060 bfd_boolean relative_reloc;
252b5132
RH		 3061
3062 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3063 if (r_type == R_386_GNU_VTINHERIT
3064 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 3065 {
3066 if (wrel != rel)
3067 *wrel = *rel;
3068 continue;
3069 }
dc47f327 3070
55fd94b0 3071 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3072 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3073 >= R_386_ext - R_386_standard)
3074 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 3075 >= R_386_ext2 - R_386_ext))
47aeb64c
NC		 3076 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
3077
1b452ec6 3078 howto = elf_howto_table + indx;
252b5132
RH		 3079
3080 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3081 h = NULL;
3082 sym = NULL;
3083 sec = NULL;
b34976b6 3084 unresolved_reloc = FALSE;
252b5132
RH		 3085 if (r_symndx < symtab_hdr->sh_info)
3086 {
3087 sym = local_syms + r_symndx;
3088 sec = local_sections[r_symndx];
3089 relocation = (sec->output_section->vma
3090 + sec->output_offset
3091 + sym->st_value);
1788fc08 3092 st_size = sym->st_size;
ab96bf03
AM		 3093
3094 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3095 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 3096 || (bfd_link_relocatable (info)
ab96bf03 3097 && sec->output_offset != 0)))
f8df10f4 3098 {
f8df10f4 3099 bfd_vma addend;
4a335f3d 3100 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3101
4a335f3d 3102 switch (howto->size)
f8df10f4 3103 {
4a335f3d
AM		 3104 case 0:
3105 addend = bfd_get_8 (input_bfd, where);
3106 if (howto->pc_relative)
3107 {
3108 addend = (addend ^ 0x80) - 0x80;
3109 addend += 1;
3110 }
3111 break;
3112 case 1:
3113 addend = bfd_get_16 (input_bfd, where);
3114 if (howto->pc_relative)
3115 {
3116 addend = (addend ^ 0x8000) - 0x8000;
3117 addend += 2;
3118 }
3119 break;
3120 case 2:
3121 addend = bfd_get_32 (input_bfd, where);
3122 if (howto->pc_relative)
3123 {
3124 addend = (addend ^ 0x80000000) - 0x80000000;
3125 addend += 4;
3126 }
3127 break;
3128 default:
3129 abort ();
f8df10f4
JJ		 3130 }
3131
0e1862bb 3132 if (bfd_link_relocatable (info))
ab96bf03
AM		 3133 addend += sec->output_offset;
3134 else
3135 {
3136 asection *msec = sec;
3137 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3138 addend);
3139 addend -= relocation;
3140 addend += msec->output_section->vma + msec->output_offset;
3141 }
4a335f3d
AM		 3142
3143 switch (howto->size)
3144 {
3145 case 0:
16a10388 3146 /* FIXME: overflow checks. */
4a335f3d
AM		 3147 if (howto->pc_relative)
3148 addend -= 1;
3149 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3150 break;
3151 case 1:
3152 if (howto->pc_relative)
3153 addend -= 2;
3154 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3155 break;
3156 case 2:
3157 if (howto->pc_relative)
3158 addend -= 4;
3159 bfd_put_32 (input_bfd, addend, where);
3160 break;
3161 }
f8df10f4 3162 }
0e1862bb 3163 else if (!bfd_link_relocatable (info)
1f85278f 3164 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3165 {
3166 /* Relocate against local STT_GNU_IFUNC symbol. */
0afcef53
L		 3167 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd, rel,
3168 FALSE);
c25bc9fc
L		 3169 if (h == NULL)
3170 abort ();
3171
23209a78 3172 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3173 h->root.u.def.value = sym->st_value;
3174 h->root.u.def.section = sec;
3175 }
252b5132
RH		 3176 }
3177 else
3178 {
3d540e93 3179 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3180 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3181
b2a8e766
AM		 3182 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3183 r_symndx, symtab_hdr, sym_hashes,
3184 h, sec, relocation,
62d887d4 3185 unresolved_reloc, warned, ignored);
1788fc08 3186 st_size = h->size;
252b5132
RH		 3187 }
3188
dbaa2011 3189 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 3190 {
3191 _bfd_clear_contents (howto, input_bfd, input_section,
3192 contents + rel->r_offset);
3193 wrel->r_offset = rel->r_offset;
3194 wrel->r_info = 0;
3195 wrel->r_addend = 0;
3196
3197 /* For ld -r, remove relocations in debug sections against
3198 sections defined in discarded sections. Not done for
3199 eh_frame editing code expects to be present. */
3200 if (bfd_link_relocatable (info)
3201 && (input_section->flags & SEC_DEBUGGING))
3202 wrel--;
3203
3204 continue;
3205 }
9635fe29 3206
0e1862bb 3207 if (bfd_link_relocatable (info))
2d5da473
L		 3208 {
3209 if (wrel != rel)
3210 *wrel = *rel;
3211 continue;
3212 }
ab96bf03 3213
0afcef53 3214 eh = (struct elf_x86_link_hash_entry *) h;
ee2fdd6f 3215
cbe950e9
L		 3216 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3217 it here if it is defined in a non-shared object. */
3218 if (h != NULL
3219 && h->type == STT_GNU_IFUNC
3220 && h->def_regular)
3221 {
ee2fdd6f 3222 asection *gotplt, *base_got;
cbe950e9 3223 bfd_vma plt_index;
4c544807 3224 const char *name;
cbe950e9 3225
97dc35c8
L		 3226 if ((input_section->flags & SEC_ALLOC) == 0)
3227 {
3228 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3229 sections because such sections are not SEC_ALLOC and
3230 thus ld.so will not process them. */
3231 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3232 continue;
97dc35c8
L		 3233 abort ();
3234 }
cbe950e9
L		 3235
3236 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3237 if (htab->elf.splt != NULL)
cbe950e9 3238 {
ee2fdd6f
L		 3239 if (htab->plt_second != NULL)
3240 {
3241 resolved_plt = htab->plt_second;
3242 plt_offset = eh->plt_second.offset;
3243 }
3244 else
3245 {
3246 resolved_plt = htab->elf.splt;
3247 plt_offset = h->plt.offset;
3248 }
6de2ae4a 3249 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3250 }
3251 else
3252 {
ee2fdd6f
L		 3253 resolved_plt = htab->elf.iplt;
3254 plt_offset = h->plt.offset;
6de2ae4a 3255 gotplt = htab->elf.igotplt;
cbe950e9
L		 3256 }
3257
cbe950e9
L		 3258 switch (r_type)
3259 {
3260 default:
233cc9c1 3261 break;
cbe950e9
L		 3262
3263 case R_386_GOT32:
02a86693 3264 case R_386_GOT32X:
6de2ae4a 3265 base_got = htab->elf.sgot;
cbe950e9
L		 3266 off = h->got.offset;
3267
7afd84dc 3268 if (base_got == NULL)
cbe950e9
L		 3269 abort ();
3270
7afd84dc 3271 if (off == (bfd_vma) -1)
cbe950e9 3272 {
7afd84dc
L		 3273 /* We can't use h->got.offset here to save state, or
3274 even just remember the offset, as finish_dynamic_symbol
3275 would use that as offset into .got. */
6bbec505 3276
233cc9c1
L		 3277 if (h->plt.offset == (bfd_vma) -1)
3278 abort ();
3279
6de2ae4a 3280 if (htab->elf.splt != NULL)
7afd84dc 3281 {
f604c2a2 3282 plt_index = (h->plt.offset / plt_entry_size
765e526c 3283 - htab->plt.has_plt0);
7afd84dc 3284 off = (plt_index + 3) * 4;
6de2ae4a 3285 base_got = htab->elf.sgotplt;
7afd84dc 3286 }
cbe950e9
L		 3287 else
3288 {
25e762b9 3289 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3290 off = plt_index * 4;
6de2ae4a 3291 base_got = htab->elf.igotplt;
7afd84dc
L		 3292 }
3293
3294 if (h->dynindx == -1
3295 || h->forced_local
3296 || info->symbolic)
3297 {
3298 /* This references the local defitionion. We must
3299 initialize this entry in the global offset table.
3300 Since the offset must always be a multiple of 8,
3301 we use the least significant bit to record
3302 whether we have initialized it already.
3303
3304 When doing a dynamic link, we create a .rela.got
3305 relocation entry to initialize the value. This
3306 is done in the finish_dynamic_symbol routine. */
3307 if ((off & 1) != 0)
3308 off &= ~1;
3309 else
3310 {
3311 bfd_put_32 (output_bfd, relocation,
3312 base_got->contents + off);
3313 h->got.offset |= 1;
3314 }
cbe950e9 3315 }
cbe950e9 3316
7afd84dc 3317 relocation = off;
7afd84dc
L		 3318 }
3319 else
ca8c86ef
L		 3320 relocation = (base_got->output_section->vma
3321 + base_got->output_offset + off
3322 - gotplt->output_section->vma
3323 - gotplt->output_offset);
3324
2a568401
L		 3325 if (rel->r_offset > 1
3326 && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5
3327 && *(contents + rel->r_offset - 2) != 0x8d)
712ec279
L		 3328 {
3329 if (bfd_link_pic (info))
3330 goto disallow_got32;
3331
3332 /* Add the GOT base if there is no base register. */
3333 relocation += (gotplt->output_section->vma
3334 + gotplt->output_offset);
3335 }
3336 else if (htab->elf.splt == NULL)
3337 {
3338 /* Adjust for static executables. */
3339 relocation += gotplt->output_offset;
3340 }
0018b0a3 3341
cbe950e9 3342 goto do_relocation;
233cc9c1
L		 3343 }
3344
3345 if (h->plt.offset == (bfd_vma) -1)
3346 {
3347 /* Handle static pointers of STT_GNU_IFUNC symbols. */
3348 if (r_type == R_386_32
3349 && (input_section->flags & SEC_CODE) == 0)
3350 goto do_ifunc_pointer;
3351 goto bad_ifunc_reloc;
3352 }
3353
ee2fdd6f
L		 3354 relocation = (resolved_plt->output_section->vma
3355 + resolved_plt->output_offset + plt_offset);
233cc9c1
L		 3356
3357 switch (r_type)
3358 {
3359 default:
3360bad_ifunc_reloc:
3361 if (h->root.root.string)
3362 name = h->root.root.string;
3363 else
3364 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3365 NULL);
4eca0228 3366 _bfd_error_handler
695344c0 3367 /* xgettext:c-format */
233cc9c1
L		 3368 (_("%B: relocation %s against STT_GNU_IFUNC "
3369 "symbol `%s' isn't supported"), input_bfd,
3370 howto->name, name);
3371 bfd_set_error (bfd_error_bad_value);
3372 return FALSE;
3373
3374 case R_386_32:
3375 /* Generate dynamic relcoation only when there is a
3376 non-GOT reference in a shared object. */
3377 if ((bfd_link_pic (info) && h->non_got_ref)
3378 || h->plt.offset == (bfd_vma) -1)
3379 {
3380 Elf_Internal_Rela outrel;
3381 asection *sreloc;
3382 bfd_vma offset;
3383
3384do_ifunc_pointer:
3385 /* Need a dynamic relocation to get the real function
3386 adddress. */
3387 offset = _bfd_elf_section_offset (output_bfd,
3388 info,
3389 input_section,
3390 rel->r_offset);
3391 if (offset == (bfd_vma) -1
3392 || offset == (bfd_vma) -2)
3393 abort ();
3394
3395 outrel.r_offset = (input_section->output_section->vma
3396 + input_section->output_offset
3397 + offset);
3398
3399 if (h->dynindx == -1
3400 || h->forced_local
3401 || bfd_link_executable (info))
3402 {
6322e5c5
L		 3403 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
3404 h->root.root.string,
3405 h->root.u.def.section->owner);
3406
233cc9c1
L		 3407 /* This symbol is resolved locally. */
3408 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3409 bfd_put_32 (output_bfd,
3410 (h->root.u.def.value
3411 + h->root.u.def.section->output_section->vma
3412 + h->root.u.def.section->output_offset),
3413 contents + offset);
3414 }
3415 else
3416 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3417
3418 /* Dynamic relocations are stored in
3419 1. .rel.ifunc section in PIC object.
3420 2. .rel.got section in dynamic executable.
3421 3. .rel.iplt section in static executable. */
3422 if (bfd_link_pic (info))
3423 sreloc = htab->elf.irelifunc;
3424 else if (htab->elf.splt != NULL)
3425 sreloc = htab->elf.srelgot;
3426 else
3427 sreloc = htab->elf.irelplt;
3428 elf_append_rel (output_bfd, sreloc, &outrel);
3429
3430 /* If this reloc is against an external symbol, we
3431 do not want to fiddle with the addend. Otherwise,
3432 we need to include the symbol value so that it
3433 becomes an addend for the dynamic reloc. For an
3434 internal symbol, we have updated addend. */
3435 continue;
3436 }
3437 /* FALLTHROUGH */
3438 case R_386_PC32:
3439 case R_386_PLT32:
3440 goto do_relocation;
cbe950e9
L		 3441
3442 case R_386_GOTOFF:
3443 relocation -= (gotplt->output_section->vma
3444 + gotplt->output_offset);
3445 goto do_relocation;
3446 }
3447 }
3448
aec6b87e 3449 resolved_to_zero = (eh != NULL
e62b9723 3450 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
0afcef53 3451 I386_ELF_DATA,
e62b9723
L		 3452 eh->has_got_reloc,
3453 eh));
aec6b87e 3454
252b5132
RH		 3455 switch (r_type)
3456 {
02a86693
L		 3457 case R_386_GOT32X:
3458 /* Avoid optimizing _DYNAMIC since ld.so may use its
3459 link-time address. */
3460 if (h == htab->elf.hdynamic)
3461 goto r_386_got32;
3462
3463 if (bfd_link_pic (info))
3464 {
3465 /* It is OK to convert mov to lea and convert indirect
3466 branch to direct branch. It is OK to convert adc,
3467 add, and, cmp, or, sbb, sub, test, xor only when PIC
3468 is false. */
02e2aef8
L		 3469 unsigned int opcode, addend;
3470 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3471 if (addend != 0)
3472 goto r_386_got32;
3473 opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
02a86693
L		 3474 if (opcode != 0x8b && opcode != 0xff)
3475 goto r_386_got32;
3476 }
3477
3478 /* Resolve "mov GOT[(%reg)], %reg",
3479 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
3480 and "binop foo@GOT[(%reg)], %reg". */
3481 if (h == NULL
3482 || (h->plt.offset == (bfd_vma) -1
3483 && h->got.offset == (bfd_vma) -1)
3484 || htab->elf.sgotplt == NULL)
3485 abort ();
3486
3487 offplt = (htab->elf.sgotplt->output_section->vma
3488 + htab->elf.sgotplt->output_offset);
3489
3490 /* It is relative to .got.plt section. */
3491 if (h->got.offset != (bfd_vma) -1)
32875eb1
L		 3492 /* Use GOT entry. Mask off the least significant bit in
3493 GOT offset which may be set by R_386_GOT32 processing
3494 below. */
02a86693
L		 3495 relocation = (htab->elf.sgot->output_section->vma
3496 + htab->elf.sgot->output_offset
32875eb1 3497 + (h->got.offset & ~1) - offplt);
02a86693
L		 3498 else
3499 /* Use GOTPLT entry. */
f604c2a2 3500 relocation = (h->plt.offset / plt_entry_size
765e526c 3501 - htab->plt.has_plt0 + 3) * 4;
02a86693
L		 3502
3503 if (!bfd_link_pic (info))
3504 {
3505 /* If not PIC, add the .got.plt section address for
a3718e9e 3506 baseless addressing. */
02a86693 3507 unsigned int modrm;
02e2aef8 3508 modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
02a86693
L		 3509 if ((modrm & 0xc7) == 0x5)
3510 relocation += offplt;
3511 }
3512
3513 unresolved_reloc = FALSE;
3514 break;
3515
252b5132 3516 case R_386_GOT32:
02a86693 3517r_386_got32:
252b5132
RH		 3518 /* Relocation is to the entry for this symbol in the global
3519 offset table. */
6de2ae4a 3520 if (htab->elf.sgot == NULL)
ffb2e45b 3521 abort ();
252b5132 3522
e133d005 3523 relative_reloc = FALSE;
252b5132
RH		 3524 if (h != NULL)
3525 {
b34976b6 3526 bfd_boolean dyn;
252b5132
RH		 3527
3528 off = h->got.offset;
ebe50bae 3529 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L		 3530 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3531 bfd_link_pic (info),
3532 h)
3533 || (bfd_link_pic (info)
586119b3 3534 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3535 || (ELF_ST_VISIBILITY (h->other)
3536 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3537 {
3538 /* This is actually a static link, or it is a
3539 -Bsymbolic link and the symbol is defined
3540 locally, or the symbol was forced to be local
3541 because of a version file. We must initialize
3542 this entry in the global offset table. Since the
3543 offset must always be a multiple of 4, we use the
3544 least significant bit to record whether we have
3545 initialized it already.
3546
3547 When doing a dynamic link, we create a .rel.got
3548 relocation entry to initialize the value. This
3549 is done in the finish_dynamic_symbol routine. */
3550 if ((off & 1) != 0)
3551 off &= ~1;
3552 else
3553 {
3554 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3555 htab->elf.sgot->contents + off);
252b5132 3556 h->got.offset |= 1;
e133d005
L		 3557
3558 if (h->dynindx == -1
3559 && !h->forced_local
3560 && h->root.type != bfd_link_hash_undefweak
0dc9a308 3561 && bfd_link_pic (info))
e133d005
L		 3562 {
3563 /* PR ld/21402: If this symbol isn't dynamic
0dc9a308 3564 in PIC, generate R_386_RELATIVE here. */
e133d005
L		 3565 eh->no_finish_dynamic_symbol = 1;
3566 relative_reloc = TRUE;
3567 }
252b5132
RH		 3568 }
3569 }
8c694914 3570 else
b34976b6 3571 unresolved_reloc = FALSE;
252b5132
RH		 3572 }
3573 else
3574 {
ffb2e45b
AM		 3575 if (local_got_offsets == NULL)
3576 abort ();
252b5132
RH		 3577
3578 off = local_got_offsets[r_symndx];
3579
3580 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3581 the least significant bit to record whether we have
3582 already generated the necessary reloc. */
252b5132
RH		 3583 if ((off & 1) != 0)
3584 off &= ~1;
3585 else
3586 {
6725bdbf 3587 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3588 htab->elf.sgot->contents + off);
e133d005 3589 local_got_offsets[r_symndx] |= 1;
252b5132 3590
0e1862bb 3591 if (bfd_link_pic (info))
e133d005 3592 relative_reloc = TRUE;
252b5132 3593 }
252b5132
RH		 3594 }
3595
e133d005
L		 3596 if (relative_reloc)
3597 {
3598 asection *s;
3599 Elf_Internal_Rela outrel;
3600
3601 s = htab->elf.srelgot;
3602 if (s == NULL)
3603 abort ();
3604
3605 outrel.r_offset = (htab->elf.sgot->output_section->vma
3606 + htab->elf.sgot->output_offset
3607 + off);
3608 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3609 elf_append_rel (output_bfd, s, &outrel);
3610 }
3611
ffb2e45b
AM		 3612 if (off >= (bfd_vma) -2)
3613 abort ();
3614
74d7f0aa
L		 3615 relocation = (htab->elf.sgot->output_section->vma
3616 + htab->elf.sgot->output_offset + off);
2a568401
L		 3617 if (rel->r_offset > 1
3618 && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5
3619 && *(contents + rel->r_offset - 2) != 0x8d)
74d7f0aa
L		 3620 {
3621 if (bfd_link_pic (info))
3622 {
3623 /* For PIC, disallow R_386_GOT32 without a base
2a568401
L		 3624 register, except for "lea foo@GOT, %reg", since
3625 we don't know what the GOT base is. */
74d7f0aa
L		 3626 const char *name;
3627
712ec279 3628disallow_got32:
a5def14f 3629 if (h == NULL || h->root.root.string == NULL)
74d7f0aa
L		 3630 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3631 NULL);
3632 else
3633 name = h->root.root.string;
3634
4eca0228 3635 _bfd_error_handler
695344c0 3636 /* xgettext:c-format */
63a5468a
AM		 3637 (_("%B: direct GOT relocation %s against `%s'"
3638 " without base register can not be used"
3639 " when making a shared object"),
712ec279 3640 input_bfd, howto->name, name);
74d7f0aa
L		 3641 bfd_set_error (bfd_error_bad_value);
3642 return FALSE;
3643 }
3644 }
3645 else
3646 {
3647 /* Subtract the .got.plt section address only with a base
3648 register. */
3649 relocation -= (htab->elf.sgotplt->output_section->vma
3650 + htab->elf.sgotplt->output_offset);
3651 }
3652
252b5132
RH		 3653 break;
3654
3655 case R_386_GOTOFF:
3656 /* Relocation is relative to the start of the global offset
3657 table. */
3658
3d949995
L		 3659 /* Check to make sure it isn't a protected function or data
3660 symbol for shared library since it may not be local when
3661 used as function address or with copy relocation. We also
e3c0e327 3662 need to make sure that a symbol is referenced locally. */
0e1862bb 3663 if (!bfd_link_executable (info) && h)
90f487df 3664 {
41bed6dd
L		 3665 if (!h->def_regular)
3666 {
3667 const char *v;
3668
3669 switch (ELF_ST_VISIBILITY (h->other))
3670 {
3671 case STV_HIDDEN:
3672 v = _("hidden symbol");
3673 break;
3674 case STV_INTERNAL:
3675 v = _("internal symbol");
3676 break;
3677 case STV_PROTECTED:
3678 v = _("protected symbol");
3679 break;
3680 default:
3681 v = _("symbol");
3682 break;
3683 }
3684
4eca0228 3685 _bfd_error_handler
695344c0 3686 /* xgettext:c-format */
63a5468a
AM		 3687 (_("%B: relocation R_386_GOTOFF against undefined %s"
3688 " `%s' can not be used when making a shared object"),
41bed6dd
L		 3689 input_bfd, v, h->root.root.string);
3690 bfd_set_error (bfd_error_bad_value);
3691 return FALSE;
3692 }
d5597ebc 3693 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 3694 && (h->type == STT_FUNC
3695 || h->type == STT_OBJECT)
41bed6dd
L		 3696 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3697 {
4eca0228 3698 _bfd_error_handler
695344c0 3699 /* xgettext:c-format */
63a5468a
AM		 3700 (_("%B: relocation R_386_GOTOFF against protected %s"
3701 " `%s' can not be used when making a shared object"),
3d949995
L		 3702 input_bfd,
3703 h->type == STT_FUNC ? "function" : "data",
3704 h->root.root.string);
41bed6dd
L		 3705 bfd_set_error (bfd_error_bad_value);
3706 return FALSE;
3707 }
90f487df
L		 3708 }
3709
8c37241b
JJ		 3710 /* Note that sgot is not involved in this
3711 calculation. We always want the start of .got.plt. If we
3712 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3713 permitted by the ABI, we might have to change this
3714 calculation. */
6de2ae4a
L		 3715 relocation -= htab->elf.sgotplt->output_section->vma
3716 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3717 break;
3718
3719 case R_386_GOTPC:
3720 /* Use global offset table as symbol value. */
6de2ae4a
L		 3721 relocation = htab->elf.sgotplt->output_section->vma
3722 + htab->elf.sgotplt->output_offset;
b34976b6 3723 unresolved_reloc = FALSE;
252b5132
RH		 3724 break;
3725
3726 case R_386_PLT32:
3727 /* Relocation is to the entry for this symbol in the
3728 procedure linkage table. */
3729
dd5724d5 3730 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3731 without using the procedure linkage table. */
252b5132
RH		 3732 if (h == NULL)
3733 break;
3734
dd7e64d4
L		 3735 if ((h->plt.offset == (bfd_vma) -1
3736 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3737 || htab->elf.splt == NULL)
252b5132
RH		 3738 {
3739 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3740 happens when statically linking PIC code, or when
3741 using -Bsymbolic. */
252b5132
RH		 3742 break;
3743 }
3744
dd7e64d4
L		 3745 if (h->plt.offset != (bfd_vma) -1)
3746 {
ee2fdd6f
L		 3747 if (htab->plt_second != NULL)
3748 {
3749 resolved_plt = htab->plt_second;
3750 plt_offset = eh->plt_second.offset;
3751 }
3752 else
3753 {
3754 resolved_plt = htab->elf.splt;
3755 plt_offset = h->plt.offset;
3756 }
dd7e64d4
L		 3757 }
3758 else
3759 {
3760 resolved_plt = htab->plt_got;
3761 plt_offset = eh->plt_got.offset;
3762 }
3763
3764 relocation = (resolved_plt->output_section->vma
3765 + resolved_plt->output_offset
3766 + plt_offset);
b34976b6 3767 unresolved_reloc = FALSE;
252b5132
RH		 3768 break;
3769
1788fc08 3770 case R_386_SIZE32:
1788fc08
L		 3771 /* Set to symbol size. */
3772 relocation = st_size;
3773 /* Fall through. */
3774
252b5132
RH		 3775 case R_386_32:
3776 case R_386_PC32:
3348747a
NS		 3777 if ((input_section->flags & SEC_ALLOC) == 0
3778 || is_vxworks_tls)
ec338859
AM		 3779 break;
3780
aec6b87e
L		 3781 /* Copy dynamic function pointer relocations. Don't generate
3782 dynamic relocations against resolved undefined weak symbols
3783 in PIE, except for R_386_PC32. */
0e1862bb 3784 if ((bfd_link_pic (info)
ef5aade5 3785 && (h == NULL
aec6b87e
L		 3786 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3787 && (!resolved_to_zero
3788 || r_type == R_386_PC32))
3789 || h->root.type != bfd_link_hash_undefweak))
1788fc08 3790 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3791 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845 3792 || (ELIMINATE_COPY_RELOCS
0e1862bb 3793 && !bfd_link_pic (info)
12d0ee4a
AM		 3794 && h != NULL
3795 && h->dynindx != -1
aec6b87e
L		 3796 && (!h->non_got_ref
3797 || eh->func_pointer_refcount > 0
3798 || (h->root.type == bfd_link_hash_undefweak
3799 && !resolved_to_zero))
bae420ef
L		 3800 && ((h->def_dynamic && !h->def_regular)
3801 /* Undefined weak symbol is bound locally when
3802 PIC is false. */
3803 || h->root.type == bfd_link_hash_undefweak)))
252b5132 3804 {
947216bf 3805 Elf_Internal_Rela outrel;
b34976b6 3806 bfd_boolean skip, relocate;
0c715baa 3807 asection *sreloc;
252b5132
RH		 3808
3809 /* When generating a shared object, these relocations
3810 are copied into the output file to be resolved at run
3811 time. */
3812
b34976b6
AM		 3813 skip = FALSE;
3814 relocate = FALSE;
252b5132 3815
c629eae0
JJ		 3816 outrel.r_offset =
3817 _bfd_elf_section_offset (output_bfd, info, input_section,
3818 rel->r_offset);
3819 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3820 skip = TRUE;
0bb2d96a 3821 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3822 skip = TRUE, relocate = TRUE;
252b5132
RH		 3823 outrel.r_offset += (input_section->output_section->vma
3824 + input_section->output_offset);
3825
3826 if (skip)
0bb2d96a 3827 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3828 else if (h != NULL
3829 && h->dynindx != -1
3830 && (r_type == R_386_PC32
4e0c91e4
L		 3831 || !(bfd_link_executable (info)
3832 || SYMBOLIC_BIND (info, h))
f5385ebf 3833 || !h->def_regular))
0bb2d96a 3834 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3835 else
3836 {
5a15f56f 3837 /* This symbol is local, or marked to become local. */
b34976b6 3838 relocate = TRUE;
5a15f56f 3839 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3840 }
3841
cbe950e9 3842 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3843
62d78908
L		 3844 if (sreloc == NULL || sreloc->contents == NULL)
3845 {
3846 r = bfd_reloc_notsupported;
3847 goto check_relocation_error;
3848 }
0c715baa 3849
59d6ffb2 3850 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3851
3852 /* If this reloc is against an external symbol, we do
3853 not want to fiddle with the addend. Otherwise, we
3854 need to include the symbol value so that it becomes
3855 an addend for the dynamic reloc. */
0f88be7a 3856 if (! relocate)
252b5132
RH		 3857 continue;
3858 }
252b5132
RH		 3859 break;
3860
37e55690 3861 case R_386_TLS_IE:
0e1862bb 3862 if (!bfd_link_executable (info))
37e55690 3863 {
947216bf 3864 Elf_Internal_Rela outrel;
37e55690 3865 asection *sreloc;
37e55690
JJ		 3866
3867 outrel.r_offset = rel->r_offset
3868 + input_section->output_section->vma
3869 + input_section->output_offset;
3870 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3871 sreloc = elf_section_data (input_section)->sreloc;
3872 if (sreloc == NULL)
3873 abort ();
59d6ffb2 3874 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3875 }
3876 /* Fall through */
3877
13ae64f3 3878 case R_386_TLS_GD:
67a4f2b7
AO		 3879 case R_386_TLS_GOTDESC:
3880 case R_386_TLS_DESC_CALL:
13ae64f3 3881 case R_386_TLS_IE_32:
37e55690 3882 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3883 tls_type = GOT_UNKNOWN;
3884 if (h == NULL && local_got_offsets)
0afcef53 3885 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
13ae64f3 3886 else if (h != NULL)
0afcef53 3887 tls_type = elf_x86_hash_entry(h)->tls_type;
37e55690
JJ		 3888 if (tls_type == GOT_TLS_IE)
3889 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3890
3891 if (! elf_i386_tls_transition (info, input_bfd,
3892 input_section, contents,
3893 symtab_hdr, sym_hashes,
3894 &r_type, tls_type, rel,
bedfd056 3895 relend, h, r_symndx, TRUE))
142411ca 3896 return FALSE;
13ae64f3
JJ		 3897
3898 if (r_type == R_386_TLS_LE_32)
3899 {
82e51918 3900 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3901 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3902 {
142411ca 3903 unsigned int type;
13ae64f3
JJ		 3904 bfd_vma roff;
3905
3906 /* GD->LE transition. */
6eaa7fb5 3907 type = *(contents + rel->r_offset - 2);
13ae64f3
JJ		 3908 if (type == 0x04)
3909 {
6eaa7fb5
L		 3910 /* Change
3911 leal foo@tlsgd(,%ebx,1), %eax
3912 call ___tls_get_addr@PLT
3913 into:
3914 movl %gs:0, %eax
3915 subl $foo@tpoff, %eax
13ae64f3 3916 (6 byte form of subl). */
142411ca 3917 roff = rel->r_offset + 5;
13ae64f3
JJ		 3918 }
3919 else
3920 {
6eaa7fb5
L		 3921 /* Change
3922 leal foo@tlsgd(%ebx), %eax
3923 call ___tls_get_addr@PLT
3924 nop
3925 or
3926 leal foo@tlsgd(%reg), %eax
3927 call *___tls_get_addr@GOT(%reg)
3928 which may be converted to
3929 addr32 call ___tls_get_addr
3930 into:
3931 movl %gs:0, %eax; subl $foo@tpoff, %eax
142411ca 3932 (6 byte form of subl). */
142411ca 3933 roff = rel->r_offset + 6;
13ae64f3 3934 }
6eaa7fb5
L		 3935 memcpy (contents + roff - 8,
3936 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
eb4ff4d6 3937 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3938 contents + roff);
6eaa7fb5 3939 /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */
13ae64f3 3940 rel++;
60f2e42e 3941 wrel++;
13ae64f3
JJ		 3942 continue;
3943 }
67a4f2b7
AO		 3944 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3945 {
3946 /* GDesc -> LE transition.
3947 It's originally something like:
3948 leal x@tlsdesc(%ebx), %eax
3949
3950 leal x@ntpoff, %eax
3951
3952 Registers other than %eax may be set up here. */
3953
142411ca 3954 unsigned int val;
67a4f2b7
AO		 3955 bfd_vma roff;
3956
67a4f2b7 3957 roff = rel->r_offset;
67a4f2b7 3958 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3959
3960 /* Now modify the instruction as appropriate. */
3961 /* aoliva FIXME: remove the above and xor the byte
3962 below with 0x86. */
3963 bfd_put_8 (output_bfd, val ^ 0x86,
3964 contents + roff - 1);
eb4ff4d6 3965 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3966 contents + roff);
3967 continue;
3968 }
3969 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3970 {
3971 /* GDesc -> LE transition.
3972 It's originally:
3973 call *(%eax)
3974 Turn it into:
142411ca 3975 xchg %ax,%ax */
67a4f2b7 3976
67a4f2b7 3977 bfd_vma roff;
6bbec505 3978
67a4f2b7 3979 roff = rel->r_offset;
10efb593 3980 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3981 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3982 continue;
3983 }
37e55690 3984 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3985 {
142411ca 3986 unsigned int val;
13ae64f3
JJ		 3987
3988 /* IE->LE transition:
37e55690
JJ		 3989 Originally it can be one of:
3990 movl foo, %eax
3991 movl foo, %reg
3992 addl foo, %reg
3993 We change it into:
3994 movl $foo, %eax
3995 movl $foo, %reg
3996 addl $foo, %reg. */
37e55690 3997 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3998 if (val == 0xa1)
3999 {
4000 /* movl foo, %eax. */
55fd94b0
AM		 4001 bfd_put_8 (output_bfd, 0xb8,
4002 contents + rel->r_offset - 1);
37e55690 4003 }
299bf759 4004 else
37e55690 4005 {
142411ca
L		 4006 unsigned int type;
4007
55fd94b0
AM		 4008 type = bfd_get_8 (input_bfd,
4009 contents + rel->r_offset - 2);
299bf759 4010 switch (type)
26e41594 4011 {
299bf759
L		 4012 case 0x8b:
4013 /* movl */
299bf759
L		 4014 bfd_put_8 (output_bfd, 0xc7,
4015 contents + rel->r_offset - 2);
4016 bfd_put_8 (output_bfd,
4017 0xc0 | ((val >> 3) & 7),
4018 contents + rel->r_offset - 1);
4019 break;
4020 case 0x03:
4021 /* addl */
299bf759
L		 4022 bfd_put_8 (output_bfd, 0x81,
4023 contents + rel->r_offset - 2);
4024 bfd_put_8 (output_bfd,
4025 0xc0 | ((val >> 3) & 7),
4026 contents + rel->r_offset - 1);
4027 break;
4028 default:
4029 BFD_FAIL ();
4030 break;
26e41594 4031 }
37e55690 4032 }
eb4ff4d6 4033 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4034 contents + rel->r_offset);
4035 continue;
4036 }
4037 else
4038 {
4039 unsigned int val, type;
4040
4041 /* {IE_32,GOTIE}->LE transition:
4042 Originally it can be one of:
13ae64f3 4043 subl foo(%reg1), %reg2
13ae64f3 4044 movl foo(%reg1), %reg2
37e55690 4045 addl foo(%reg1), %reg2
13ae64f3
JJ		 4046 We change it into:
4047 subl $foo, %reg2
37e55690
JJ		 4048 movl $foo, %reg2 (6 byte form)
4049 addl $foo, %reg2. */
13ae64f3
JJ		 4050 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4051 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4052 if (type == 0x8b)
4053 {
4054 /* movl */
13ae64f3
JJ		 4055 bfd_put_8 (output_bfd, 0xc7,
4056 contents + rel->r_offset - 2);
4057 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4058 contents + rel->r_offset - 1);
4059 }
4060 else if (type == 0x2b)
4061 {
4062 /* subl */
13ae64f3
JJ		 4063 bfd_put_8 (output_bfd, 0x81,
4064 contents + rel->r_offset - 2);
4065 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4066 contents + rel->r_offset - 1);
4067 }
37e55690
JJ		 4068 else if (type == 0x03)
4069 {
4070 /* addl */
4071 bfd_put_8 (output_bfd, 0x81,
4072 contents + rel->r_offset - 2);
4073 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4074 contents + rel->r_offset - 1);
4075 }
13ae64f3
JJ		 4076 else
4077 BFD_FAIL ();
37e55690 4078 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4079 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4080 contents + rel->r_offset);
4081 else
eb4ff4d6 4082 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4083 contents + rel->r_offset);
13ae64f3
JJ		 4084 continue;
4085 }
4086 }
4087
6de2ae4a 4088 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4089 abort ();
4090
4091 if (h != NULL)
67a4f2b7
AO		 4092 {
4093 off = h->got.offset;
0afcef53 4094 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 4095 }
13ae64f3
JJ		 4096 else
4097 {
4098 if (local_got_offsets == NULL)
4099 abort ();
4100
4101 off = local_got_offsets[r_symndx];
67a4f2b7 4102 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4103 }
4104
4105 if ((off & 1) != 0)
4106 off &= ~1;
26e41594 4107 else
13ae64f3 4108 {
947216bf 4109 Elf_Internal_Rela outrel;
91d6fa6a 4110 int dr_type;
67a4f2b7 4111 asection *sreloc;
13ae64f3 4112
6de2ae4a 4113 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4114 abort ();
4115
67a4f2b7
AO		 4116 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4117
4118 if (GOT_TLS_GDESC_P (tls_type))
4119 {
59d6ffb2 4120 bfd_byte *loc;
67a4f2b7
AO		 4121 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4122 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4123 <= htab->elf.sgotplt->size);
4124 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4125 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4126 + offplt
4127 + htab->sgotplt_jump_table_size);
6de2ae4a 4128 sreloc = htab->elf.srelplt;
67a4f2b7 4129 loc = sreloc->contents;
765e526c 4130 loc += (htab->next_tls_desc_index++
5ae0bfb6 4131 * sizeof (Elf32_External_Rel));
67a4f2b7 4132 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4133 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4134 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4135 if (indx == 0)
4136 {
4137 BFD_ASSERT (! unresolved_reloc);
4138 bfd_put_32 (output_bfd,
0afcef53 4139 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 4140 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4141 + htab->sgotplt_jump_table_size + 4);
4142 }
4143 else
4144 {
4145 bfd_put_32 (output_bfd, 0,
6de2ae4a 4146 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4147 + htab->sgotplt_jump_table_size + 4);
4148 }
4149 }
4150
6de2ae4a 4151 sreloc = htab->elf.srelgot;
67a4f2b7 4152
6de2ae4a
L		 4153 outrel.r_offset = (htab->elf.sgot->output_section->vma
4154 + htab->elf.sgot->output_offset + off);
13ae64f3 4155
67a4f2b7 4156 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4157 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4158 else if (GOT_TLS_GDESC_P (tls_type))
4159 goto dr_done;
37e55690
JJ		 4160 else if (tls_type == GOT_TLS_IE_POS)
4161 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4162 else
4163 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4164
37e55690 4165 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6 4166 bfd_put_32 (output_bfd,
0afcef53 4167 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 4168 htab->elf.sgot->contents + off);
37e55690 4169 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4170 bfd_put_32 (output_bfd,
0afcef53 4171 _bfd_x86_elf_dtpoff_base (info) - relocation,
6de2ae4a 4172 htab->elf.sgot->contents + off);
67a4f2b7 4173 else if (dr_type != R_386_TLS_DESC)
c366c25e 4174 bfd_put_32 (output_bfd, 0,
6de2ae4a 4175 htab->elf.sgot->contents + off);
13ae64f3 4176 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4177
59d6ffb2 4178 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4179
67a4f2b7 4180 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4181 {
4182 if (indx == 0)
4183 {
82e51918 4184 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4185 bfd_put_32 (output_bfd,
0afcef53 4186 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 4187 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4188 }
4189 else
4190 {
4191 bfd_put_32 (output_bfd, 0,
6de2ae4a 4192 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4193 outrel.r_info = ELF32_R_INFO (indx,
4194 R_386_TLS_DTPOFF32);
4195 outrel.r_offset += 4;
59d6ffb2 4196 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4197 }
4198 }
37e55690
JJ		 4199 else if (tls_type == GOT_TLS_IE_BOTH)
4200 {
4201 bfd_put_32 (output_bfd,
eb4ff4d6 4202 (indx == 0
0afcef53 4203 ? relocation - _bfd_x86_elf_dtpoff_base (info)
eb4ff4d6 4204 : 0),
6de2ae4a 4205 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4206 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4207 outrel.r_offset += 4;
59d6ffb2 4208 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4209 }
13ae64f3 4210
67a4f2b7 4211 dr_done:
13ae64f3
JJ		 4212 if (h != NULL)
4213 h->got.offset |= 1;
4214 else
4215 local_got_offsets[r_symndx] |= 1;
4216 }
4217
67a4f2b7
AO		 4218 if (off >= (bfd_vma) -2
4219 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4220 abort ();
67a4f2b7
AO		 4221 if (r_type == R_386_TLS_GOTDESC
4222 || r_type == R_386_TLS_DESC_CALL)
4223 {
4224 relocation = htab->sgotplt_jump_table_size + offplt;
4225 unresolved_reloc = FALSE;
4226 }
4227 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4228 {
6de2ae4a
L		 4229 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4230 + htab->elf.sgotplt->output_offset;
4231 relocation = htab->elf.sgot->output_section->vma
4232 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4233 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4234 && tls_type == GOT_TLS_IE_BOTH)
4235 relocation += 4;
4236 if (r_type == R_386_TLS_IE)
8c37241b 4237 relocation += g_o_t;
b34976b6 4238 unresolved_reloc = FALSE;
13ae64f3 4239 }
67a4f2b7 4240 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4241 {
4242 unsigned int val, type;
4243 bfd_vma roff;
4244
4245 /* GD->IE transition. */
6eaa7fb5
L		 4246 type = *(contents + rel->r_offset - 2);
4247 val = *(contents + rel->r_offset - 1);
13ae64f3
JJ		 4248 if (type == 0x04)
4249 {
6eaa7fb5
L		 4250 /* Change
4251 leal foo@tlsgd(,%ebx,1), %eax
4252 call ___tls_get_addr@PLT
4253 into:
4254 movl %gs:0, %eax
4255 subl $foo@gottpoff(%ebx), %eax. */
13ae64f3 4256 val >>= 3;
142411ca 4257 roff = rel->r_offset - 3;
13ae64f3
JJ		 4258 }
4259 else
4260 {
6eaa7fb5
L		 4261 /* Change
4262 leal foo@tlsgd(%ebx), %eax
4263 call ___tls_get_addr@PLT
4264 nop
4265 or
4266 leal foo@tlsgd(%reg), %eax
4267 call *___tls_get_addr@GOT(%reg)
4268 which may be converted to
4269 addr32 call ___tls_get_addr
4270 into:
4271 movl %gs:0, %eax;
4272 subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4273 roff = rel->r_offset - 2;
4274 }
4275 memcpy (contents + roff,
4276 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4277 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4278 /* If foo is used only with foo@gotntpoff(%reg) and
4279 foo@indntpoff, but not with foo@gottpoff(%reg), change
4280 subl $foo@gottpoff(%reg), %eax
4281 into:
4282 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4283 if (tls_type == GOT_TLS_IE_POS)
4284 contents[roff + 6] = 0x03;
8c37241b 4285 bfd_put_32 (output_bfd,
6de2ae4a
L		 4286 htab->elf.sgot->output_section->vma
4287 + htab->elf.sgot->output_offset + off
4288 - htab->elf.sgotplt->output_section->vma
4289 - htab->elf.sgotplt->output_offset,
13ae64f3 4290 contents + roff + 8);
6eaa7fb5 4291 /* Skip R_386_PLT32 and R_386_GOT32X. */
13ae64f3 4292 rel++;
60f2e42e 4293 wrel++;
13ae64f3
JJ		 4294 continue;
4295 }
67a4f2b7
AO		 4296 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4297 {
4298 /* GDesc -> IE transition.
4299 It's originally something like:
4300 leal x@tlsdesc(%ebx), %eax
4301
4302 Change it to:
142411ca 4303 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4304 or:
4305 movl x@gottpoff(%ebx), %eax # before negl %eax
4306
4307 Registers other than %eax may be set up here. */
4308
67a4f2b7
AO		 4309 bfd_vma roff;
4310
4311 /* First, make sure it's a leal adding ebx to a 32-bit
4312 offset into any register, although it's probably
4313 almost always going to be eax. */
4314 roff = rel->r_offset;
67a4f2b7
AO		 4315
4316 /* Now modify the instruction as appropriate. */
4317 /* To turn a leal into a movl in the form we use it, it
4318 suffices to change the first byte from 0x8d to 0x8b.
4319 aoliva FIXME: should we decide to keep the leal, all
4320 we have to do is remove the statement below, and
4321 adjust the relaxation of R_386_TLS_DESC_CALL. */
4322 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4323
4324 if (tls_type == GOT_TLS_IE_BOTH)
4325 off += 4;
4326
4327 bfd_put_32 (output_bfd,
6de2ae4a
L		 4328 htab->elf.sgot->output_section->vma
4329 + htab->elf.sgot->output_offset + off
4330 - htab->elf.sgotplt->output_section->vma
4331 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4332 contents + roff);
4333 continue;
4334 }
4335 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4336 {
4337 /* GDesc -> IE transition.
4338 It's originally:
4339 call *(%eax)
4340
4341 Change it to:
142411ca 4342 xchg %ax,%ax
67a4f2b7
AO		 4343 or
4344 negl %eax
4345 depending on how we transformed the TLS_GOTDESC above.
4346 */
4347
67a4f2b7
AO		 4348 bfd_vma roff;
4349
67a4f2b7 4350 roff = rel->r_offset;
67a4f2b7
AO		 4351
4352 /* Now modify the instruction as appropriate. */
4353 if (tls_type != GOT_TLS_IE_NEG)
4354 {
10efb593
L		 4355 /* xchg %ax,%ax */
4356 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4357 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4358 }
4359 else
4360 {
4361 /* negl %eax */
4362 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4363 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4364 }
4365
4366 continue;
4367 }
4368 else
4369 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4370 break;
4371
4372 case R_386_TLS_LDM:
142411ca
L		 4373 if (! elf_i386_tls_transition (info, input_bfd,
4374 input_section, contents,
4375 symtab_hdr, sym_hashes,
4376 &r_type, GOT_UNKNOWN, rel,
bedfd056 4377 relend, h, r_symndx, TRUE))
142411ca 4378 return FALSE;
13ae64f3 4379
142411ca
L		 4380 if (r_type != R_386_TLS_LDM)
4381 {
6eaa7fb5
L		 4382 /* LD->LE transition. Change
4383 leal foo@tlsldm(%ebx) %eax
4384 call ___tls_get_addr@PLT
4385 into:
4386 movl %gs:0, %eax
4387 nop
4388 leal 0(%esi,1), %esi
4389 or change
4390 leal foo@tlsldm(%reg) %eax
4391 call *___tls_get_addr@GOT(%reg)
4392 which may be converted to
4393 addr32 call ___tls_get_addr
4394 into:
4395 movl %gs:0, %eax
4396 leal 0(%esi), %esi */
142411ca 4397 BFD_ASSERT (r_type == R_386_TLS_LE_32);
6eaa7fb5
L		 4398 if (*(contents + rel->r_offset + 4) == 0xff
4399 || *(contents + rel->r_offset + 4) == 0x67)
4400 memcpy (contents + rel->r_offset - 2,
4401 "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12);
4402 else
4403 memcpy (contents + rel->r_offset - 2,
4404 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4405 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 4406 rel++;
60f2e42e 4407 wrel++;
13ae64f3
JJ		 4408 continue;
4409 }
4410
6de2ae4a 4411 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4412 abort ();
4413
0afcef53 4414 off = htab->tls_ld_or_ldm_got.offset;
13ae64f3
JJ		 4415 if (off & 1)
4416 off &= ~1;
4417 else
4418 {
947216bf 4419 Elf_Internal_Rela outrel;
13ae64f3 4420
6de2ae4a 4421 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4422 abort ();
4423
6de2ae4a
L		 4424 outrel.r_offset = (htab->elf.sgot->output_section->vma
4425 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4426
4427 bfd_put_32 (output_bfd, 0,
6de2ae4a 4428 htab->elf.sgot->contents + off);
13ae64f3 4429 bfd_put_32 (output_bfd, 0,
6de2ae4a 4430 htab->elf.sgot->contents + off + 4);
13ae64f3 4431 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4432 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
0afcef53 4433 htab->tls_ld_or_ldm_got.offset |= 1;
13ae64f3 4434 }
6de2ae4a
L		 4435 relocation = htab->elf.sgot->output_section->vma
4436 + htab->elf.sgot->output_offset + off
4437 - htab->elf.sgotplt->output_section->vma
4438 - htab->elf.sgotplt->output_offset;
b34976b6 4439 unresolved_reloc = FALSE;
13ae64f3
JJ		 4440 break;
4441
4442 case R_386_TLS_LDO_32:
0e1862bb
L		 4443 if (!bfd_link_executable (info)
4444 || (input_section->flags & SEC_CODE) == 0)
0afcef53 4445 relocation -= _bfd_x86_elf_dtpoff_base (info);
13ae64f3
JJ		 4446 else
4447 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4448 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4449 break;
4450
4451 case R_386_TLS_LE_32:
13ae64f3 4452 case R_386_TLS_LE:
0e1862bb 4453 if (!bfd_link_executable (info))
37e55690 4454 {
947216bf 4455 Elf_Internal_Rela outrel;
37e55690 4456 asection *sreloc;
37e55690
JJ		 4457
4458 outrel.r_offset = rel->r_offset
4459 + input_section->output_section->vma
4460 + input_section->output_offset;
4461 if (h != NULL && h->dynindx != -1)
4462 indx = h->dynindx;
4463 else
4464 indx = 0;
4465 if (r_type == R_386_TLS_LE_32)
4466 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4467 else
4468 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4469 sreloc = elf_section_data (input_section)->sreloc;
4470 if (sreloc == NULL)
4471 abort ();
59d6ffb2 4472 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4473 if (indx)
4474 continue;
4475 else if (r_type == R_386_TLS_LE_32)
0afcef53 4476 relocation = _bfd_x86_elf_dtpoff_base (info) - relocation;
37e55690 4477 else
0afcef53 4478 relocation -= _bfd_x86_elf_dtpoff_base (info);
37e55690
JJ		 4479 }
4480 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4481 relocation = elf_i386_tpoff (info, relocation);
37e55690 4482 else
eb4ff4d6 4483 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4484 break;
4485
252b5132
RH		 4486 default:
4487 break;
4488 }
4489
239e1f3a
AM		 4490 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4491 because such sections are not SEC_ALLOC and thus ld.so will
4492 not process them. */
8c694914 4493 if (unresolved_reloc
239e1f3a 4494 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4495 && h->def_dynamic)
4496 && _bfd_elf_section_offset (output_bfd, info, input_section,
4497 rel->r_offset) != (bfd_vma) -1)
6a30718d 4498 {
4eca0228 4499 _bfd_error_handler
695344c0 4500 /* xgettext:c-format */
d42c267e 4501 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4502 input_bfd,
4503 input_section,
d42c267e 4504 rel->r_offset,
843fe662 4505 howto->name,
6a30718d 4506 h->root.root.string);
b34976b6 4507 return FALSE;
6a30718d 4508 }
83be169b 4509
cbe950e9 4510do_relocation:
252b5132
RH		 4511 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4512 contents, rel->r_offset,
55fd94b0 4513 relocation, 0);
252b5132 4514
62d78908 4515check_relocation_error:
cf5c0c5b 4516 if (r != bfd_reloc_ok)
252b5132 4517 {
cf5c0c5b 4518 const char *name;
ffb2e45b 4519
cf5c0c5b
AM		 4520 if (h != NULL)
4521 name = h->root.root.string;
4522 else
4523 {
4524 name = bfd_elf_string_from_elf_section (input_bfd,
4525 symtab_hdr->sh_link,
4526 sym->st_name);
4527 if (name == NULL)
b34976b6 4528 return FALSE;
cf5c0c5b
AM		 4529 if (*name == '\0')
4530 name = bfd_section_name (input_bfd, sec);
4531 }
ffb2e45b 4532
cf5c0c5b 4533 if (r == bfd_reloc_overflow)
1a72702b
AM		 4534 (*info->callbacks->reloc_overflow)
4535 (info, (h ? &h->root : NULL), name, howto->name,
4536 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
cf5c0c5b
AM		 4537 else
4538 {
4eca0228 4539 _bfd_error_handler
695344c0 4540 /* xgettext:c-format */
d42c267e 4541 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
d003868e 4542 input_bfd, input_section,
d42c267e 4543 rel->r_offset, name, (int) r);
b34976b6 4544 return FALSE;
cf5c0c5b 4545 }
252b5132 4546 }
60f2e42e
L		 4547
4548 if (wrel != rel)
4549 *wrel = *rel;
4550 }
4551
4552 if (wrel != rel)
4553 {
4554 Elf_Internal_Shdr *rel_hdr;
4555 size_t deleted = rel - wrel;
4556
4557 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
4558 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
4559 if (rel_hdr->sh_size == 0)
4560 {
4561 /* It is too late to remove an empty reloc section. Leave
4562 one NONE reloc.
4563 ??? What is wrong with an empty section??? */
4564 rel_hdr->sh_size = rel_hdr->sh_entsize;
4565 deleted -= 1;
4566 }
4567 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
4568 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
4569 input_section->reloc_count -= deleted;
252b5132
RH		 4570 }
4571
b34976b6 4572 return TRUE;
252b5132
RH		 4573}
4574
4575/* Finish up dynamic symbol handling. We set the contents of various
4576 dynamic sections here. */
4577
b34976b6 4578static bfd_boolean
55fd94b0
AM		 4579elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4580 struct bfd_link_info *info,
4581 struct elf_link_hash_entry *h,
4582 Elf_Internal_Sym *sym)
252b5132 4583{
0afcef53 4584 struct elf_x86_link_hash_table *htab;
25e762b9
RM		 4585 unsigned plt_entry_size;
4586 const struct elf_i386_backend_data *abed;
0afcef53 4587 struct elf_x86_link_hash_entry *eh;
aec6b87e 4588 bfd_boolean local_undefweak;
ee2fdd6f 4589 bfd_boolean use_plt_second;
252b5132 4590
0afcef53 4591 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 4592 if (htab == NULL)
4593 return FALSE;
252b5132 4594
25e762b9 4595 abed = get_elf_i386_backend_data (output_bfd);
765e526c 4596 plt_entry_size = htab->plt.plt_entry_size;
25e762b9 4597
ee2fdd6f
L		 4598 /* Use the second PLT section only if there is .plt section. */
4599 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
4600
0afcef53 4601 eh = (struct elf_x86_link_hash_entry *) h;
e133d005
L		 4602 if (eh->no_finish_dynamic_symbol)
4603 abort ();
dd7e64d4 4604
aec6b87e
L		 4605 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
4606 resolved undefined weak symbols in executable so that their
4607 references have value 0 at run-time. */
0afcef53 4608 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, I386_ELF_DATA,
e62b9723
L		 4609 eh->has_got_reloc,
4610 eh);
aec6b87e 4611
252b5132
RH		 4612 if (h->plt.offset != (bfd_vma) -1)
4613 {
ee2fdd6f 4614 bfd_vma plt_index, plt_offset;
252b5132 4615 bfd_vma got_offset;
947216bf
AM		 4616 Elf_Internal_Rela rel;
4617 bfd_byte *loc;
ee2fdd6f 4618 asection *plt, *resolved_plt, *gotplt, *relplt;
cbe950e9
L		 4619
4620 /* When building a static executable, use .iplt, .igot.plt and
4621 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4622 if (htab->elf.splt != NULL)
cbe950e9 4623 {
6de2ae4a
L		 4624 plt = htab->elf.splt;
4625 gotplt = htab->elf.sgotplt;
4626 relplt = htab->elf.srelplt;
cbe950e9
L		 4627 }
4628 else
4629 {
6de2ae4a
L		 4630 plt = htab->elf.iplt;
4631 gotplt = htab->elf.igotplt;
4632 relplt = htab->elf.irelplt;
cbe950e9 4633 }
252b5132
RH		 4634
4635 /* This symbol has an entry in the procedure linkage table. Set
4636 it up. */
4637
cbe950e9 4638 if ((h->dynindx == -1
aec6b87e 4639 && !local_undefweak
0e1862bb 4640 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 4641 && h->def_regular
4642 && h->type == STT_GNU_IFUNC))
4643 || plt == NULL
4644 || gotplt == NULL
4645 || relplt == NULL)
cec7f46a 4646 abort ();
252b5132
RH		 4647
4648 /* Get the index in the procedure linkage table which
4649 corresponds to this symbol. This is the index of this symbol
4650 in all the symbols for which we are making plt entries. The
cbe950e9 4651 first entry in the procedure linkage table is reserved.
252b5132 4652
cbe950e9 4653 Get the offset into the .got table of the entry that
252b5132 4654 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4655 The first three are reserved.
6bbec505 4656
cbe950e9
L		 4657 For static executables, we don't reserve anything. */
4658
6de2ae4a 4659 if (plt == htab->elf.splt)
cbe950e9 4660 {
f604c2a2 4661 got_offset = (h->plt.offset / plt_entry_size
765e526c 4662 - htab->plt.has_plt0);
e1f98742 4663 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4664 }
4665 else
4666 {
e1f98742
L		 4667 got_offset = h->plt.offset / plt_entry_size;
4668 got_offset = got_offset * 4;
cbe950e9 4669 }
252b5132 4670
f604c2a2
L		 4671 /* Fill in the entry in the procedure linkage table and update
4672 the first slot. */
765e526c 4673 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
f604c2a2 4674 plt_entry_size);
ee2fdd6f
L		 4675
4676 if (use_plt_second)
4677 {
4678 const bfd_byte *plt_entry;
4679 if (bfd_link_pic (info))
765e526c 4680 plt_entry = htab->non_lazy_plt->pic_plt_entry;
ee2fdd6f 4681 else
765e526c 4682 plt_entry = htab->non_lazy_plt->plt_entry;
ee2fdd6f 4683 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c 4684 plt_entry, htab->non_lazy_plt->plt_entry_size);
ee2fdd6f
L		 4685
4686 resolved_plt = htab->plt_second;
4687 plt_offset = eh->plt_second.offset;
4688 }
4689 else
4690 {
4691 resolved_plt = plt;
4692 plt_offset = h->plt.offset;
4693 }
4694
0e1862bb 4695 if (! bfd_link_pic (info))
252b5132 4696 {
252b5132 4697 bfd_put_32 (output_bfd,
cbe950e9
L		 4698 (gotplt->output_section->vma
4699 + gotplt->output_offset
252b5132 4700 + got_offset),
ee2fdd6f 4701 resolved_plt->contents + plt_offset
765e526c 4702 + htab->plt.plt_got_offset);
eac338cf 4703
f604c2a2 4704 if (abed->os == is_vxworks)
eac338cf
PB		 4705 {
4706 int s, k, reloc_index;
4707
4708 /* Create the R_386_32 relocation referencing the GOT
4709 for this PLT entry. */
4710
4711 /* S: Current slot number (zero-based). */
765e526c
L		 4712 s = ((h->plt.offset - htab->plt.plt_entry_size)
4713 / htab->plt.plt_entry_size);
eac338cf 4714 /* K: Number of relocations for PLTResolve. */
0e1862bb 4715 if (bfd_link_pic (info))
eac338cf
PB		 4716 k = PLTRESOLVE_RELOCS_SHLIB;
4717 else
4718 k = PLTRESOLVE_RELOCS;
4719 /* Skip the PLTresolve relocations, and the relocations for
4720 the other PLT slots. */
4721 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
765e526c 4722 loc = (htab->srelplt2->contents + reloc_index
eac338cf
PB		 4723 * sizeof (Elf32_External_Rel));
4724
ee2fdd6f
L		 4725 rel.r_offset = (plt->output_section->vma
4726 + plt->output_offset
eac338cf 4727 + h->plt.offset + 2),
7325306f 4728 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4729 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4730
4731 /* Create the R_386_32 relocation referencing the beginning of
4732 the PLT for this GOT entry. */
6de2ae4a
L		 4733 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4734 + htab->elf.sgotplt->output_offset
eac338cf 4735 + got_offset);
7325306f 4736 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4737 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4738 loc + sizeof (Elf32_External_Rel));
eac338cf 4739 }
252b5132
RH		 4740 }
4741 else
4742 {
252b5132 4743 bfd_put_32 (output_bfd, got_offset,
ee2fdd6f 4744 resolved_plt->contents + plt_offset
765e526c 4745 + htab->plt.plt_got_offset);
252b5132
RH		 4746 }
4747
aec6b87e
L		 4748 /* Fill in the entry in the global offset table. Leave the entry
4749 as zero for undefined weak symbol in PIE. No PLT relocation
4750 against undefined weak symbol in PIE. */
4751 if (!local_undefweak)
cbe950e9 4752 {
765e526c 4753 if (htab->plt.has_plt0)
f604c2a2
L		 4754 bfd_put_32 (output_bfd,
4755 (plt->output_section->vma
4756 + plt->output_offset
4757 + h->plt.offset
765e526c 4758 + htab->lazy_plt->plt_lazy_offset),
f604c2a2 4759 gotplt->contents + got_offset);
252b5132 4760
aec6b87e
L		 4761 /* Fill in the entry in the .rel.plt section. */
4762 rel.r_offset = (gotplt->output_section->vma
4763 + gotplt->output_offset
4764 + got_offset);
4765 if (h->dynindx == -1
4766 || ((bfd_link_executable (info)
4767 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4768 && h->def_regular
4769 && h->type == STT_GNU_IFUNC))
4770 {
6322e5c5
L		 4771 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
4772 h->root.root.string,
4773 h->root.u.def.section->owner);
4774
aec6b87e
L		 4775 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4776 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4777 in the .got.plt section. */
4778 bfd_put_32 (output_bfd,
4779 (h->root.u.def.value
4780 + h->root.u.def.section->output_section->vma
4781 + h->root.u.def.section->output_offset),
4782 gotplt->contents + got_offset);
4783 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4784 /* R_386_IRELATIVE comes last. */
4785 plt_index = htab->next_irelative_index--;
4786 }
4787 else
4788 {
4789 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4790 plt_index = htab->next_jump_slot_index++;
4791 }
4792
4793 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
4794 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4795
f604c2a2
L		 4796 /* Don't fill the second and third slots in PLT entry for
4797 static executables nor without PLT0. */
765e526c 4798 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e
L		 4799 {
4800 bfd_put_32 (output_bfd,
4801 plt_index * sizeof (Elf32_External_Rel),
4802 plt->contents + h->plt.offset
765e526c 4803 + htab->lazy_plt->plt_reloc_offset);
f604c2a2
L		 4804 bfd_put_32 (output_bfd,
4805 - (h->plt.offset
765e526c 4806 + htab->lazy_plt->plt_plt_offset + 4),
f604c2a2 4807 (plt->contents + h->plt.offset
765e526c 4808 + htab->lazy_plt->plt_plt_offset));
aec6b87e 4809 }
e1f98742 4810 }
dd7e64d4
L		 4811 }
4812 else if (eh->plt_got.offset != (bfd_vma) -1)
4813 {
4814 bfd_vma got_offset, plt_offset;
4815 asection *plt, *got, *gotplt;
4816 const bfd_byte *got_plt_entry;
4817
dd7e64d4
L		 4818 /* Set the entry in the GOT procedure linkage table. */
4819 plt = htab->plt_got;
4820 got = htab->elf.sgot;
4821 gotplt = htab->elf.sgotplt;
4822 got_offset = h->got.offset;
4823
4824 if (got_offset == (bfd_vma) -1
4825 || plt == NULL
4826 || got == NULL
4827 || gotplt == NULL)
4828 abort ();
4829
4830 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 4831 if (! bfd_link_pic (info))
252b5132 4832 {
765e526c 4833 got_plt_entry = htab->non_lazy_plt->plt_entry;
dd7e64d4 4834 got_offset += got->output_section->vma + got->output_offset;
252b5132 4835 }
dd7e64d4
L		 4836 else
4837 {
765e526c 4838 got_plt_entry = htab->non_lazy_plt->pic_plt_entry;
dd7e64d4
L		 4839 got_offset += (got->output_section->vma
4840 + got->output_offset
4841 - gotplt->output_section->vma
4842 - gotplt->output_offset);
4843 }
4844
4845 plt_offset = eh->plt_got.offset;
4846 memcpy (plt->contents + plt_offset, got_plt_entry,
765e526c 4847 htab->non_lazy_plt->plt_entry_size);
dd7e64d4 4848 bfd_put_32 (output_bfd, got_offset,
f604c2a2 4849 (plt->contents + plt_offset
765e526c 4850 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 4851 }
4852
aec6b87e
L		 4853 if (!local_undefweak
4854 && !h->def_regular
dd7e64d4
L		 4855 && (h->plt.offset != (bfd_vma) -1
4856 || eh->plt_got.offset != (bfd_vma) -1))
4857 {
4858 /* Mark the symbol as undefined, rather than as defined in
4859 the .plt section. Leave the value if there were any
4860 relocations where pointer equality matters (this is a clue
4861 for the dynamic linker, to make function pointer
4862 comparisons work between an application and shared
4863 library), otherwise set it to zero. If a function is only
4864 called from a binary, there is no need to slow down
4865 shared libraries because of that. */
4866 sym->st_shndx = SHN_UNDEF;
4867 if (!h->pointer_equality_needed)
4868 sym->st_value = 0;
252b5132
RH		 4869 }
4870
aec6b87e
L		 4871 /* Don't generate dynamic GOT relocation against undefined weak
4872 symbol in executable. */
13ae64f3 4873 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 4874 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry(h)->tls_type)
4875 && (elf_x86_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
aec6b87e 4876 && !local_undefweak)
252b5132 4877 {
947216bf 4878 Elf_Internal_Rela rel;
233cc9c1 4879 asection *relgot = htab->elf.srelgot;
252b5132
RH		 4880
4881 /* This symbol has an entry in the global offset table. Set it
4882 up. */
4883
6de2ae4a 4884 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4885 abort ();
252b5132 4886
6de2ae4a
L		 4887 rel.r_offset = (htab->elf.sgot->output_section->vma
4888 + htab->elf.sgot->output_offset
dc810e39 4889 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4890
dd5724d5
AM		 4891 /* If this is a static link, or it is a -Bsymbolic link and the
4892 symbol is defined locally or was forced to be local because
4893 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4894 The entry in the global offset table will already have been
4895 initialized in the relocate_section function. */
710ab287 4896 if (h->def_regular
0018b0a3
L		 4897 && h->type == STT_GNU_IFUNC)
4898 {
233cc9c1
L		 4899 if (h->plt.offset == (bfd_vma) -1)
4900 {
4901 /* STT_GNU_IFUNC is referenced without PLT. */
4902 if (htab->elf.splt == NULL)
4903 {
4904 /* use .rel[a].iplt section to store .got relocations
4905 in static executable. */
4906 relgot = htab->elf.irelplt;
4907 }
4908 if (SYMBOL_REFERENCES_LOCAL (info, h))
4909 {
6322e5c5
L		 4910 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
4911 h->root.root.string,
4912 h->root.u.def.section->owner);
4913
233cc9c1
L		 4914 bfd_put_32 (output_bfd,
4915 (h->root.u.def.value
4916 + h->root.u.def.section->output_section->vma
4917 + h->root.u.def.section->output_offset),
4918 htab->elf.sgot->contents + h->got.offset);
4919 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4920 }
4921 else
4922 goto do_glob_dat;
4923 }
4924 else if (bfd_link_pic (info))
710ab287
L		 4925 {
4926 /* Generate R_386_GLOB_DAT. */
4927 goto do_glob_dat;
4928 }
4929 else
4930 {
cd2b2c10 4931 asection *plt;
ee2fdd6f 4932 bfd_vma plt_offset;
cd2b2c10 4933
710ab287
L		 4934 if (!h->pointer_equality_needed)
4935 abort ();
4936
4937 /* For non-shared object, we can't use .got.plt, which
4938 contains the real function addres if we need pointer
4939 equality. We load the GOT entry with the PLT entry. */
ee2fdd6f
L		 4940 if (htab->plt_second != NULL)
4941 {
4942 plt = htab->plt_second;
4943 plt_offset = eh->plt_second.offset;
4944 }
4945 else
4946 {
4947 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4948 plt_offset = h->plt.offset;
4949 }
710ab287
L		 4950 bfd_put_32 (output_bfd,
4951 (plt->output_section->vma
ee2fdd6f 4952 + plt->output_offset + plt_offset),
6de2ae4a 4953 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4954 return TRUE;
4955 }
0018b0a3 4956 }
0e1862bb 4957 else if (bfd_link_pic (info)
0018b0a3 4958 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4959 {
6725bdbf 4960 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4961 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4962 }
252b5132
RH		 4963 else
4964 {
dd5724d5 4965 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4966do_glob_dat:
6725bdbf 4967 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4968 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4969 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4970 }
4971
233cc9c1 4972 elf_append_rel (output_bfd, relgot, &rel);
252b5132
RH		 4973 }
4974
f5385ebf 4975 if (h->needs_copy)
252b5132 4976 {
947216bf 4977 Elf_Internal_Rela rel;
5474d94f 4978 asection *s;
252b5132
RH		 4979
4980 /* This symbol needs a copy reloc. Set it up. */
4981
ffb2e45b
AM		 4982 if (h->dynindx == -1
4983 || (h->root.type != bfd_link_hash_defined
4984 && h->root.type != bfd_link_hash_defweak)
5474d94f
AM		 4985 || htab->elf.srelbss == NULL
4986 || htab->elf.sreldynrelro == NULL)
ffb2e45b 4987 abort ();
252b5132
RH		 4988
4989 rel.r_offset = (h->root.u.def.value
4990 + h->root.u.def.section->output_section->vma
4991 + h->root.u.def.section->output_offset);
4992 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
afbf7e8e 4993 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 4994 s = htab->elf.sreldynrelro;
4995 else
4996 s = htab->elf.srelbss;
4997 elf_append_rel (output_bfd, s, &rel);
252b5132
RH		 4998 }
4999
b34976b6 5000 return TRUE;
252b5132
RH		 5001}
5002
c25bc9fc
L		 5003/* Finish up local dynamic symbol handling. We set the contents of
5004 various dynamic sections here. */
5005
5006static bfd_boolean
5007elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
5008{
5009 struct elf_link_hash_entry *h
5010 = (struct elf_link_hash_entry *) *slot;
5011 struct bfd_link_info *info
23209a78 5012 = (struct bfd_link_info *) inf;
c25bc9fc
L		 5013
5014 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
5015 h, NULL);
5016}
5017
aec6b87e
L		 5018/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
5019 here since undefined weak symbol may not be dynamic and may not be
5020 called for elf_i386_finish_dynamic_symbol. */
5021
5022static bfd_boolean
5023elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
5024 void *inf)
5025{
5026 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
5027 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5028
5029 if (h->root.type != bfd_link_hash_undefweak
5030 || h->dynindx != -1)
5031 return TRUE;
5032
5033 return elf_i386_finish_dynamic_symbol (info->output_bfd,
5f0f0847 5034 info, h, NULL);
aec6b87e
L		 5035}
5036
38701953
AM		 5037/* Used to decide how to sort relocs in an optimal manner for the
5038 dynamic linker, before writing them out. */
5039
5040static enum elf_reloc_type_class
cae1fbbb 5041elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 5042 const asection *rel_sec ATTRIBUTE_UNUSED,
5043 const Elf_Internal_Rela *rela)
38701953 5044{
cae1fbbb
L		 5045 bfd *abfd = info->output_bfd;
5046 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5047 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 5048
d9e3b590
L		 5049 if (htab->dynsym != NULL
5050 && htab->dynsym->contents != NULL)
5051 {
5052 /* Check relocation against STT_GNU_IFUNC symbol if there are
5053 dynamic symbols. */
5054 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
c428ce9d
L		 5055 if (r_symndx != STN_UNDEF)
5056 {
5057 Elf_Internal_Sym sym;
5058 if (!bed->s->swap_symbol_in (abfd,
5059 (htab->dynsym->contents
5060 + r_symndx * sizeof (Elf32_External_Sym)),
5061 0, &sym))
5062 abort ();
d9e3b590 5063
c428ce9d
L		 5064 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
5065 return reloc_class_ifunc;
5066 }
d9e3b590 5067 }
cae1fbbb 5068
55fd94b0 5069 switch (ELF32_R_TYPE (rela->r_info))
38701953 5070 {
c428ce9d
L		 5071 case R_386_IRELATIVE:
5072 return reloc_class_ifunc;
38701953
AM		 5073 case R_386_RELATIVE:
5074 return reloc_class_relative;
5075 case R_386_JUMP_SLOT:
5076 return reloc_class_plt;
5077 case R_386_COPY:
5078 return reloc_class_copy;
5079 default:
5080 return reloc_class_normal;
5081 }
5082}
5083
252b5132
RH		 5084/* Finish up the dynamic sections. */
5085
b34976b6 5086static bfd_boolean
55fd94b0
AM		 5087elf_i386_finish_dynamic_sections (bfd *output_bfd,
5088 struct bfd_link_info *info)
252b5132 5089{
0afcef53 5090 struct elf_x86_link_hash_table *htab;
252b5132 5091 bfd *dynobj;
252b5132 5092 asection *sdyn;
25e762b9 5093 const struct elf_i386_backend_data *abed;
252b5132 5094
0afcef53 5095 htab = elf_x86_hash_table (info, I386_ELF_DATA);
4dfe6ac6
NC		 5096 if (htab == NULL)
5097 return FALSE;
5098
ebe50bae 5099 dynobj = htab->elf.dynobj;
3d4d4302 5100 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 5101 abed = get_elf_i386_backend_data (output_bfd);
252b5132 5102
ebe50bae 5103 if (htab->elf.dynamic_sections_created)
252b5132 5104 {
252b5132
RH		 5105 Elf32_External_Dyn *dyncon, *dynconend;
5106
6de2ae4a 5107 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5108 abort ();
252b5132
RH		 5109
5110 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5111 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5112 for (; dyncon < dynconend; dyncon++)
5113 {
5114 Elf_Internal_Dyn dyn;
51b64d56 5115 asection *s;
252b5132
RH		 5116
5117 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5118
5119 switch (dyn.d_tag)
5120 {
5121 default:
f604c2a2 5122 if (abed->os == is_vxworks
25e762b9 5123 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5124 break;
0ac8d2ca 5125 continue;
252b5132
RH		 5126
5127 case DT_PLTGOT:
6de2ae4a 5128 s = htab->elf.sgotplt;
8c37241b 5129 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5130 break;
5131
252b5132 5132 case DT_JMPREL:
6de2ae4a 5133 s = htab->elf.srelplt;
6348e046 5134 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5135 break;
5136
5137 case DT_PLTRELSZ:
6de2ae4a 5138 s = htab->elf.srelplt;
eea6121a 5139 dyn.d_un.d_val = s->size;
252b5132 5140 break;
252b5132 5141 }
0ac8d2ca
AM		 5142
5143 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5144 }
5145
6de2ae4a 5146 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 5147 {
1f78f649
L		 5148 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5149 really seem like the right value. */
5150 elf_section_data (htab->elf.splt->output_section)
5151 ->this_hdr.sh_entsize = 4;
5152
765e526c 5153 if (htab->plt.has_plt0)
252b5132 5154 {
f604c2a2
L		 5155 /* Fill in the special first entry in the procedure linkage
5156 table. */
765e526c
L		 5157 memcpy (htab->elf.splt->contents, htab->plt.plt0_entry,
5158 htab->lazy_plt->plt0_entry_size);
5159 memset (htab->elf.splt->contents + htab->lazy_plt->plt0_entry_size,
25e762b9 5160 abed->plt0_pad_byte,
765e526c 5161 htab->plt.plt_entry_size - htab->lazy_plt->plt0_entry_size);
f604c2a2 5162 if (!bfd_link_pic (info))
eac338cf 5163 {
f604c2a2
L		 5164 bfd_put_32 (output_bfd,
5165 (htab->elf.sgotplt->output_section->vma
5166 + htab->elf.sgotplt->output_offset
5167 + 4),
5168 htab->elf.splt->contents
765e526c 5169 + htab->lazy_plt->plt0_got1_offset);
f604c2a2
L		 5170 bfd_put_32 (output_bfd,
5171 (htab->elf.sgotplt->output_section->vma
5172 + htab->elf.sgotplt->output_offset
5173 + 8),
5174 htab->elf.splt->contents
765e526c 5175 + htab->lazy_plt->plt0_got2_offset);
eac338cf 5176
f604c2a2 5177 if (abed->os == is_vxworks)
1f78f649 5178 {
f604c2a2
L		 5179 Elf_Internal_Rela rel;
5180 int num_plts = (htab->elf.splt->size
765e526c 5181 / htab->plt.plt_entry_size) - 1;
f604c2a2 5182 unsigned char *p;
765e526c 5183 asection *srelplt2 = htab->srelplt2;
f604c2a2
L		 5184
5185 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
5186 + 4. On IA32 we use REL relocations so the
5187 addend goes in the PLT directly. */
5188 rel.r_offset = (htab->elf.splt->output_section->vma
5189 + htab->elf.splt->output_offset
765e526c 5190 + htab->lazy_plt->plt0_got1_offset);
1f78f649
L		 5191 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
5192 R_386_32);
f604c2a2 5193 bfd_elf32_swap_reloc_out (output_bfd, &rel,
0afcef53 5194 srelplt2->contents);
f604c2a2
L		 5195 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_
5196 + 8. */
5197 rel.r_offset = (htab->elf.splt->output_section->vma
5198 + htab->elf.splt->output_offset
765e526c 5199 + htab->lazy_plt->plt0_got2_offset);
f604c2a2 5200 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
1f78f649 5201 R_386_32);
f604c2a2 5202 bfd_elf32_swap_reloc_out (output_bfd, &rel,
0afcef53 5203 srelplt2->contents +
f604c2a2
L		 5204 sizeof (Elf32_External_Rel));
5205 /* Correct the .rel.plt.unloaded relocations. */
0afcef53 5206 p = srelplt2->contents;
f604c2a2
L		 5207 if (bfd_link_pic (info))
5208 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5209 else
5210 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5211
5212 for (; num_plts; num_plts--)
5213 {
5214 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
5215 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
5216 R_386_32);
5217 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5218 p += sizeof (Elf32_External_Rel);
5219
5220 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
5221 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
5222 R_386_32);
5223 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5224 p += sizeof (Elf32_External_Rel);
5225 }
1f78f649 5226 }
eac338cf
PB		 5227 }
5228 }
252b5132 5229 }
f604c2a2
L		 5230
5231 if (htab->plt_got != NULL && htab->plt_got->size > 0)
5232 elf_section_data (htab->plt_got->output_section)
765e526c 5233 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
ee2fdd6f
L		 5234
5235 if (htab->plt_second != NULL && htab->plt_second->size > 0)
5236 elf_section_data (htab->plt_second->output_section)
765e526c 5237 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
252b5132
RH		 5238 }
5239
f604c2a2
L		 5240 /* Fill in the first three entries in the global offset table. */
5241 if (htab->elf.sgotplt && htab->elf.sgotplt->size > 0)
252b5132 5242 {
56d4289c
L		 5243 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5244 {
4eca0228 5245 _bfd_error_handler
56d4289c
L		 5246 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5247 return FALSE;
5248 }
5249
f604c2a2
L		 5250 bfd_put_32 (output_bfd,
5251 (sdyn == NULL ? 0
5252 : sdyn->output_section->vma + sdyn->output_offset),
5253 htab->elf.sgotplt->contents);
5254 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5255 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
252b5132 5256
6de2ae4a 5257 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5258 }
8c37241b 5259
e41b3a13 5260 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5261 if (htab->plt_eh_frame != NULL
5262 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5263 {
5264 if (htab->elf.splt != NULL
5265 && htab->elf.splt->size != 0
5266 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5267 && htab->elf.splt->output_section != NULL
5268 && htab->plt_eh_frame->output_section != NULL)
5269 {
5270 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5271 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5272 + htab->plt_eh_frame->output_offset
5273 + PLT_FDE_START_OFFSET;
5274 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5275 htab->plt_eh_frame->contents
5276 + PLT_FDE_START_OFFSET);
5277 }
5278 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5279 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5280 {
5281 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5282 htab->plt_eh_frame,
5283 htab->plt_eh_frame->contents))
5284 return FALSE;
5285 }
5286 }
5287
fff53dae
L		 5288 /* Adjust .eh_frame for .plt.got section. */
5289 if (htab->plt_got_eh_frame != NULL
5290 && htab->plt_got_eh_frame->contents != NULL)
5291 {
5292 if (htab->plt_got != NULL
5293 && htab->plt_got->size != 0
5294 && (htab->plt_got->flags & SEC_EXCLUDE) == 0
5295 && htab->plt_got->output_section != NULL
5296 && htab->plt_got_eh_frame->output_section != NULL)
5297 {
5298 bfd_vma plt_start = htab->plt_got->output_section->vma;
5299 bfd_vma eh_frame_start = htab->plt_got_eh_frame->output_section->vma
5300 + htab->plt_got_eh_frame->output_offset
5301 + PLT_FDE_START_OFFSET;
5302 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5303 htab->plt_got_eh_frame->contents
5304 + PLT_FDE_START_OFFSET);
5305 }
5306 if (htab->plt_got_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
5307 {
5308 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5309 htab->plt_got_eh_frame,
5310 htab->plt_got_eh_frame->contents))
5311 return FALSE;
5312 }
5313 }
5314
ee2fdd6f
L		 5315 /* Adjust .eh_frame for the second PLT section. */
5316 if (htab->plt_second_eh_frame != NULL
5317 && htab->plt_second_eh_frame->contents != NULL)
5318 {
5319 if (htab->plt_second != NULL
5320 && htab->plt_second->size != 0
5321 && (htab->plt_second->flags & SEC_EXCLUDE) == 0
5322 && htab->plt_second->output_section != NULL
5323 && htab->plt_second_eh_frame->output_section != NULL)
5324 {
5325 bfd_vma plt_start = htab->plt_second->output_section->vma;
5326 bfd_vma eh_frame_start
5327 = (htab->plt_second_eh_frame->output_section->vma
5328 + htab->plt_second_eh_frame->output_offset
5329 + PLT_FDE_START_OFFSET);
5330 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5331 htab->plt_second_eh_frame->contents
5332 + PLT_FDE_START_OFFSET);
5333 }
5334 if (htab->plt_second_eh_frame->sec_info_type
5335 == SEC_INFO_TYPE_EH_FRAME)
5336 {
5337 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5338 htab->plt_second_eh_frame,
5339 htab->plt_second_eh_frame->contents))
5340 return FALSE;
5341 }
5342 }
5343
6de2ae4a
L		 5344 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5345 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5346
aec6b87e
L		 5347 /* Fill PLT entries for undefined weak symbols in PIE. */
5348 if (bfd_link_pie (info))
5349 bfd_hash_traverse (&info->hash->table,
5350 elf_i386_pie_finish_undefweak_symbol,
5351 info);
5352
b34976b6 5353 return TRUE;
252b5132
RH		 5354}
5355
233cc9c1
L		 5356/* Fill PLT/GOT entries and allocate dynamic relocations for local
5357 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
5358 It has to be done before elf_link_sort_relocs is called so that
5359 dynamic relocations are properly sorted. */
5360
5361static bfd_boolean
5362elf_i386_output_arch_local_syms
5363 (bfd *output_bfd ATTRIBUTE_UNUSED,
5364 struct bfd_link_info *info,
5365 void *flaginfo ATTRIBUTE_UNUSED,
5366 int (*func) (void *, const char *,
5367 Elf_Internal_Sym *,
5368 asection *,
5369 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
5370{
0afcef53
L		 5371 struct elf_x86_link_hash_table *htab
5372 = elf_x86_hash_table (info, I386_ELF_DATA);
233cc9c1
L		 5373 if (htab == NULL)
5374 return FALSE;
5375
5376 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5377 htab_traverse (htab->loc_hash_table,
5378 elf_i386_finish_local_dynamic_symbol,
5379 info);
5380
5381 return TRUE;
5382}
5383
f604c2a2 5384/* Forward declaration. */
765e526c 5385static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt;
f604c2a2
L		 5386
5387/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
5388 dynamic relocations. */
5389
5390static long
5391elf_i386_get_synthetic_symtab (bfd *abfd,
5392 long symcount ATTRIBUTE_UNUSED,
5393 asymbol **syms ATTRIBUTE_UNUSED,
5394 long dynsymcount,
5395 asymbol **dynsyms,
5396 asymbol **ret)
5397{
f493882d 5398 long count, i, n;
f604c2a2 5399 int j;
f604c2a2 5400 bfd_byte *plt_contents;
f493882d 5401 long relsize;
765e526c
L		 5402 const struct elf_x86_lazy_plt_layout *lazy_plt;
5403 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
5404 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
5405 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
f604c2a2
L		 5406 asection *plt;
5407 bfd_vma got_addr;
f493882d
L		 5408 enum elf_x86_plt_type plt_type;
5409 struct elf_x86_plt plts[] =
3972882e 5410 {
f493882d
L		 5411 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
5412 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
5413 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
5414 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
f604c2a2 5415 };
144bed8d 5416
f604c2a2 5417 *ret = NULL;
144bed8d 5418
f604c2a2
L		 5419 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
5420 return 0;
3972882e 5421
f604c2a2
L		 5422 if (dynsymcount <= 0)
5423 return 0;
cca5b8b6 5424
f604c2a2
L		 5425 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
5426 if (relsize <= 0)
5427 return -1;
cca5b8b6 5428
f604c2a2
L		 5429 non_lazy_plt = NULL;
5430 /* Silence GCC 6. */
5431 lazy_plt = NULL;
ee2fdd6f
L		 5432 non_lazy_ibt_plt = NULL;
5433 lazy_ibt_plt = NULL;
f604c2a2 5434 switch (get_elf_i386_backend_data (abfd)->os)
144bed8d 5435 {
f604c2a2
L		 5436 case is_normal:
5437 non_lazy_plt = &elf_i386_non_lazy_plt;
ee2fdd6f
L		 5438 lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
5439 non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
f604c2a2
L		 5440 /* Fall through */
5441 case is_vxworks:
5442 lazy_plt = &elf_i386_lazy_plt;
5443 break;
5444 case is_nacl:
5445 lazy_plt = &elf_i386_nacl_plt;
5446 break;
5447 }
5448
5449 got_addr = 0;
3972882e 5450
f604c2a2
L		 5451 count = 0;
5452 for (j = 0; plts[j].name != NULL; j++)
5453 {
5454 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 5455 if (plt == NULL || plt->size == 0)
6f25f223 5456 continue;
533d0af0 5457
f604c2a2
L		 5458 /* Get the PLT section contents. */
5459 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5460 if (plt_contents == NULL)
5461 break;
5462 if (!bfd_get_section_contents (abfd, (asection *) plt,
5463 plt_contents, 0, plt->size))
5464 {
5465 free (plt_contents);
5466 break;
5467 }
5468
5469 /* Check what kind of PLT it is. */
5470 plt_type = plt_unknown;
90efb642
L		 5471 if (plts[j].type == plt_unknown
5472 && (plt->size >= (lazy_plt->plt0_entry_size
5473 + lazy_plt->plt_entry_size)))
f604c2a2
L		 5474 {
5475 /* Match lazy PLT first. */
5476 if (memcmp (plt_contents, lazy_plt->plt0_entry,
5477 lazy_plt->plt0_got1_offset) == 0)
ee2fdd6f
L		 5478 {
5479 /* The fist entry in the lazy IBT PLT is the same as the
5480 normal lazy PLT. */
5481 if (lazy_ibt_plt != NULL
90efb642 5482 && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
ee2fdd6f
L		 5483 lazy_ibt_plt->plt_entry,
5484 lazy_ibt_plt->plt_got_offset) == 0))
5485 plt_type = plt_lazy | plt_second;
5486 else
5487 plt_type = plt_lazy;
5488 }
f604c2a2
L		 5489 else if (memcmp (plt_contents, lazy_plt->pic_plt0_entry,
5490 lazy_plt->plt0_got1_offset) == 0)
ee2fdd6f
L		 5491 {
5492 /* The fist entry in the PIC lazy IBT PLT is the same as
5493 the normal PIC lazy PLT. */
5494 if (lazy_ibt_plt != NULL
90efb642 5495 && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size,
ee2fdd6f
L		 5496 lazy_ibt_plt->pic_plt_entry,
5497 lazy_ibt_plt->plt_got_offset) == 0))
5498 plt_type = plt_lazy | plt_pic | plt_second;
5499 else
5500 plt_type = plt_lazy | plt_pic;
5501 }
f604c2a2
L		 5502 }
5503
5504 if (non_lazy_plt != NULL
90efb642
L		 5505 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
5506 && plt->size >= non_lazy_plt->plt_entry_size)
f604c2a2
L		 5507 {
5508 /* Match non-lazy PLT. */
5509 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
5510 non_lazy_plt->plt_got_offset) == 0)
5511 plt_type = plt_non_lazy;
5512 else if (memcmp (plt_contents, non_lazy_plt->pic_plt_entry,
5513 non_lazy_plt->plt_got_offset) == 0)
5514 plt_type = plt_pic;
5515 }
5516
ee2fdd6f 5517 if ((non_lazy_ibt_plt != NULL)
90efb642
L		 5518 && (plt_type == plt_unknown || plt_type == plt_second)
5519 && plt->size >= non_lazy_ibt_plt->plt_entry_size)
ee2fdd6f
L		 5520 {
5521 if (memcmp (plt_contents,
5522 non_lazy_ibt_plt->plt_entry,
5523 non_lazy_ibt_plt->plt_got_offset) == 0)
5524 {
5525 /* Match IBT PLT. */
5526 plt_type = plt_second;
5527 non_lazy_plt = non_lazy_ibt_plt;
5528 }
5529 else if (memcmp (plt_contents,
5530 non_lazy_ibt_plt->pic_plt_entry,
5531 non_lazy_ibt_plt->plt_got_offset) == 0)
5532 {
5533 /* Match PIC IBT PLT. */
5534 plt_type = plt_second | plt_pic;
5535 non_lazy_plt = non_lazy_ibt_plt;
5536 }
5537 }
5538
f604c2a2 5539 if (plt_type == plt_unknown)
37c0b6ee
L		 5540 {
5541 free (plt_contents);
5542 continue;
5543 }
3972882e 5544
f604c2a2
L		 5545 plts[j].sec = plt;
5546 plts[j].type = plt_type;
ec1f73bb 5547
f604c2a2
L		 5548 if ((plt_type & plt_lazy))
5549 {
5550 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
5551 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
5552 /* Skip PLT0 in lazy PLT. */
5553 i = 1;
5554 }
5555 else
5556 {
5557 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
5558 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
5559 i = 0;
5560 }
fca6ae69 5561
ee2fdd6f
L		 5562 /* Skip lazy PLT when the second PLT is used. */
5563 if ((plt_type & (plt_lazy | plt_second))
5564 == (plt_lazy | plt_second))
5565 plts[j].count = 0;
5566 else
5567 {
5568 n = plt->size / plts[j].plt_entry_size;
5569 plts[j].count = n;
5570 count += n - i;
5571 }
f604c2a2
L		 5572
5573 plts[j].contents = plt_contents;
5574
5575 /* The _GLOBAL_OFFSET_TABLE_ address is needed. */
5576 if ((plt_type & plt_pic))
5577 got_addr = (bfd_vma) -1;
144bed8d
L		 5578 }
5579
f493882d
L		 5580 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
5581 got_addr, plts, dynsyms,
5582 ret);
4c45e5c9
JJ		 5583}
5584
f604c2a2
L		 5585/* Set up i386 GNU properties. Return the first relocatable ELF input
5586 with GNU properties if found. Otherwise, return NULL. */
5587
5588static bfd *
5589elf_i386_link_setup_gnu_properties (struct bfd_link_info *info)
5590{
a6798bab 5591 struct elf_x86_plt_layout_table plt_layout;
f604c2a2 5592
a6798bab
L		 5593 plt_layout.normal_target = FALSE;
5594 plt_layout.is_vxworks = FALSE;
f604c2a2
L		 5595 switch (get_elf_i386_backend_data (info->output_bfd)->os)
5596 {
5597 case is_normal:
a6798bab
L		 5598 plt_layout.lazy_plt = &elf_i386_lazy_plt;
5599 plt_layout.non_lazy_plt = &elf_i386_non_lazy_plt;
5600 plt_layout.lazy_ibt_plt = &elf_i386_lazy_ibt_plt;
5601 plt_layout.non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt;
5602 plt_layout.normal_target = TRUE;
f604c2a2
L		 5603 break;
5604 case is_vxworks:
a6798bab
L		 5605 plt_layout.lazy_plt = &elf_i386_lazy_plt;
5606 plt_layout.non_lazy_plt = NULL;
5607 plt_layout.lazy_ibt_plt = NULL;
5608 plt_layout.non_lazy_ibt_plt = NULL;
5609 plt_layout.is_vxworks = TRUE;
f604c2a2
L		 5610 break;
5611 case is_nacl:
a6798bab
L		 5612 plt_layout.lazy_plt = &elf_i386_nacl_plt;
5613 plt_layout.non_lazy_plt = NULL;
5614 plt_layout.lazy_ibt_plt = NULL;
5615 plt_layout.non_lazy_ibt_plt = NULL;
f604c2a2
L		 5616 break;
5617 }
5618
a6798bab 5619 return _bfd_x86_elf_link_setup_gnu_properties (info, &plt_layout);
f604c2a2
L		 5620}
5621
6d00b590 5622#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5623#define TARGET_LITTLE_NAME "elf32-i386"
5624#define ELF_ARCH bfd_arch_i386
ae95ffa6 5625#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5626#define ELF_MACHINE_CODE EM_386
5627#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5628
5629#define elf_backend_can_gc_sections 1
51b64d56 5630#define elf_backend_can_refcount 1
252b5132
RH		 5631#define elf_backend_want_got_plt 1
5632#define elf_backend_plt_readonly 1
5633#define elf_backend_want_plt_sym 0
5634#define elf_backend_got_header_size 12
e41b3a13 5635#define elf_backend_plt_alignment 4
64f52338 5636#define elf_backend_dtrel_excludes_plt 1
f7483970 5637#define elf_backend_extern_protected_data 1
bedfd056 5638#define elf_backend_caches_rawsize 1
5474d94f 5639#define elf_backend_want_dynrelro 1
252b5132 5640
8c29f035
AM		 5641/* Support RELA for objdump of prelink objects. */
5642#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5643#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5644
dd5724d5 5645#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
dd5724d5 5646#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5647#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5648#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5 5649
13285a1b 5650#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5651#define elf_backend_check_relocs elf_i386_check_relocs
f604c2a2 5652#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
0ac8d2ca 5653#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5654#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5655#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
233cc9c1 5656#define elf_backend_output_arch_local_syms elf_i386_output_arch_local_syms
c5fccbec
DJ		 5657#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5658#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5659#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5660#define elf_backend_relocate_section elf_i386_relocate_section
5661#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
f604c2a2 5662#define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties
dd5724d5 5663
252b5132 5664#include "elf32-target.h"
2bc3c89a
AM		 5665
5666/* FreeBSD support. */
5667
5668#undef TARGET_LITTLE_SYM
6d00b590 5669#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5670#undef TARGET_LITTLE_NAME
5671#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5672#undef ELF_OSABI
5673#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5674
5675/* The kernel recognizes executables as valid only if they carry a
5676 "FreeBSD" label in the ELF header. So we put this label on all
5677 executables and (for simplicity) also all other object files. */
5678
2bc3c89a 5679static void
d8045f23 5680elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5681{
78245035 5682 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5683
2bc3c89a 5684#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5685 {
5686 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5687 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5688 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5689 }
caf47ea6 5690#endif
2bc3c89a
AM		 5691}
5692
5693#undef elf_backend_post_process_headers
d8045f23 5694#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5695#undef elf32_bed
5696#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5697
d8045f23
NC		 5698#undef elf_backend_add_symbol_hook
5699
2bc3c89a 5700#include "elf32-target.h"
eac338cf 5701
a6cc6b3b
RO		 5702/* Solaris 2. */
5703
5704#undef TARGET_LITTLE_SYM
6d00b590 5705#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5706#undef TARGET_LITTLE_NAME
5707#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5708
914082d1
L		 5709#undef elf_backend_post_process_headers
5710
a6cc6b3b
RO		 5711/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5712 objects won't be recognized. */
5713#undef ELF_OSABI
5714
5715#undef elf32_bed
5716#define elf32_bed elf32_i386_sol2_bed
5717
7dc98aea
RO		 5718/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5719 boundary. */
84865015 5720#undef elf_backend_static_tls_alignment
7dc98aea
RO		 5721#define elf_backend_static_tls_alignment 8
5722
a6cc6b3b
RO		 5723/* The Solaris 2 ABI requires a plt symbol on all platforms.
5724
5725 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5726 File, p.63. */
84865015 5727#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 5728#define elf_backend_want_plt_sym 1
5729
84865015
NC		 5730#undef elf_backend_strtab_flags
5731#define elf_backend_strtab_flags SHF_STRINGS
5732
5522f910
NC		 5733/* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
5734 has a type >= SHT_LOOS. Returns TRUE if these fields were initialised
5735 FALSE otherwise. ISECTION is the best guess matching section from the
5736 input bfd IBFD, but it might be NULL. */
5737
84865015 5738static bfd_boolean
5522f910
NC		 5739elf32_i386_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
5740 bfd *obfd ATTRIBUTE_UNUSED,
5741 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
5742 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 5743{
5744 /* PR 19938: FIXME: Need to add code for setting the sh_info
5522f910
NC		 5745 and sh_link fields of Solaris specific section types. */
5746 return FALSE;
84865015 5747
5522f910 5748 /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13,
84865015
NC		 5749 Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation:
5750
5751http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc
5752
5753 The following values should be set:
5754
5755Type Link Info
5756-----------------------------------------------------------------------------
5757SHT_SUNW_ancillary The section header index of 0
5758 [0x6fffffee] the associated string table.
5759
5760SHT_SUNW_capinfo The section header index of For a dynamic object, the
5761 [0x6ffffff0] the associated symbol table. section header index of
5762 the associated
5763 SHT_SUNW_capchain table,
5764 otherwise 0.
5765
5766SHT_SUNW_symsort The section header index of 0
5767 [0x6ffffff1] the associated symbol table.
5768
5769SHT_SUNW_tlssort The section header index of 0
5770 [0x6ffffff2] the associated symbol table.
5771
5772SHT_SUNW_LDYNSYM The section header index of One greater than the
5773 [0x6ffffff3] the associated string table. symbol table index of the
5774 This index is the same string last local symbol,
5775 table used by the SHT_DYNSYM STB_LOCAL. Since
5776 section. SHT_SUNW_LDYNSYM only
5777 contains local symbols,
5778 sh_info is equivalent to
5779 the number of symbols in
5780 the table.
5781
5782SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer
5783 [0x6ffffff5] the section header index of to named strings, the
5784 the associated section header index of
5785 SHT_SUNW_capinfo table, the associated string
5786 otherwise 0. table, otherwise 0.
5787
5788SHT_SUNW_move The section header index of 0
5789 [0x6ffffffa] the associated symbol table.
5790
5791SHT_SUNW_COMDAT 0 0
5792 [0x6ffffffb]
5793
5794SHT_SUNW_syminfo The section header index of The section header index
5795 [0x6ffffffc] the associated symbol table. of the associated
5796 .dynamic section.
5797
5798SHT_SUNW_verdef The section header index of The number of version
5799 [0x6ffffffd] the associated string table. definitions within the
5800 section.
5801
5802SHT_SUNW_verneed The section header index of The number of version
5803 [0x6ffffffe] the associated string table. dependencies within the
5804 section.
5805
5806SHT_SUNW_versym The section header index of 0
5807 [0x6fffffff] the associated symbol table. */
84865015
NC		 5808}
5809
5522f910
NC		 5810#undef elf_backend_copy_special_section_fields
5811#define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields
84865015 5812
a6cc6b3b
RO		 5813#include "elf32-target.h"
5814
bf64a951
L		 5815/* Intel MCU support. */
5816
5817static bfd_boolean
5818elf32_iamcu_elf_object_p (bfd *abfd)
5819{
5820 /* Set the right machine number for an IAMCU elf32 file. */
5821 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
5822 return TRUE;
5823}
5824
5825#undef TARGET_LITTLE_SYM
5826#define TARGET_LITTLE_SYM iamcu_elf32_vec
5827#undef TARGET_LITTLE_NAME
5828#define TARGET_LITTLE_NAME "elf32-iamcu"
84865015 5829#undef ELF_ARCH
bf64a951
L		 5830#define ELF_ARCH bfd_arch_iamcu
5831
5832#undef ELF_MACHINE_CODE
5833#define ELF_MACHINE_CODE EM_IAMCU
5834
5835#undef ELF_OSABI
5836
5837#undef elf32_bed
5838#define elf32_bed elf32_iamcu_bed
5839
5840#undef elf_backend_object_p
5841#define elf_backend_object_p elf32_iamcu_elf_object_p
5842
5843#undef elf_backend_static_tls_alignment
5844
5845#undef elf_backend_want_plt_sym
5846#define elf_backend_want_plt_sym 0
5847
84865015 5848#undef elf_backend_strtab_flags
5522f910 5849#undef elf_backend_copy_special_section_fields
84865015 5850
bf64a951
L		 5851#include "elf32-target.h"
5852
5853/* Restore defaults. */
5854#undef ELF_ARCH
5855#define ELF_ARCH bfd_arch_i386
5856#undef ELF_MACHINE_CODE
5857#define ELF_MACHINE_CODE EM_386
5858
a27e4371
RM		 5859/* Native Client support. */
5860
5861#undef TARGET_LITTLE_SYM
6d00b590 5862#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 5863#undef TARGET_LITTLE_NAME
5864#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5865#undef elf32_bed
5866#define elf32_bed elf32_i386_nacl_bed
5867
5868#undef ELF_MAXPAGESIZE
5869#define ELF_MAXPAGESIZE 0x10000
5870
5871/* Restore defaults. */
5872#undef ELF_OSABI
5873#undef elf_backend_want_plt_sym
5874#define elf_backend_want_plt_sym 0
5875#undef elf_backend_post_process_headers
a27e4371
RM		 5876#undef elf_backend_static_tls_alignment
5877
5878/* NaCl uses substantially different PLT entries for the same effects. */
5879
5880#undef elf_backend_plt_alignment
5881#define elf_backend_plt_alignment 5
5882#define NACL_PLT_ENTRY_SIZE 64
5883#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5884
5885static const bfd_byte elf_i386_nacl_plt0_entry[] =
5886 {
5887 0xff, 0x35, /* pushl contents of address */
5888 0, 0, 0, 0, /* replaced with address of .got + 4. */
5889 0x8b, 0x0d, /* movl contents of address, %ecx */
5890 0, 0, 0, 0, /* replaced with address of .got + 8. */
5891 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5892 0xff, 0xe1 /* jmp *%ecx */
5893 };
5894
5895static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5896 {
5897 0x8b, 0x0d, /* movl contents of address, %ecx */
5898 0, 0, 0, 0, /* replaced with GOT slot address. */
5899 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5900 0xff, 0xe1, /* jmp *%ecx */
5901
5902 /* Pad to the next 32-byte boundary with nop instructions. */
5903 0x90,
5904 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5905 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5906
5907 /* Lazy GOT entries point here (32-byte aligned). */
5908 0x68, /* pushl immediate */
5909 0, 0, 0, 0, /* replaced with reloc offset. */
5910 0xe9, /* jmp relative */
5911 0, 0, 0, 0, /* replaced with offset to .plt. */
5912
5913 /* Pad to the next 32-byte boundary with nop instructions. */
5914 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5915 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5916 0x90, 0x90
5917 };
5918
5919static const bfd_byte
5920elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5921 {
5922 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5923 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5924 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5925 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5926
5927 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5928 so pad to that size with nop instructions. */
5929 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5930 };
5931
5932static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5933 {
5934 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5935 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5936 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5937 0xff, 0xe1, /* jmp *%ecx */
5938
5939 /* Pad to the next 32-byte boundary with nop instructions. */
5940 0x90,
5941 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5942 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5943
5944 /* Lazy GOT entries point here (32-byte aligned). */
5945 0x68, /* pushl immediate */
5946 0, 0, 0, 0, /* replaced with offset into relocation table. */
5947 0xe9, /* jmp relative */
5948 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5949
5950 /* Pad to the next 32-byte boundary with nop instructions. */
5951 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5952 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5953 0x90, 0x90
5954 };
5955
5956static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5957 {
5958#if (PLT_CIE_LENGTH != 20 \
5959 || PLT_FDE_LENGTH != 36 \
5960 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5961 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5962# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5963#endif
5964 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5965 0, 0, 0, 0, /* CIE ID */
5966 1, /* CIE version */
5967 'z', 'R', 0, /* Augmentation string */
5968 1, /* Code alignment factor */
5969 0x7c, /* Data alignment factor: -4 */
5970 8, /* Return address column */
5971 1, /* Augmentation size */
5972 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5973 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5974 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5975 DW_CFA_nop, DW_CFA_nop,
5976
5977 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5978 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5979 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5980 0, 0, 0, 0, /* .plt size goes here */
5981 0, /* Augmentation size */
5982 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5983 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5984 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5985 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5986 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5987 13, /* Block length */
5988 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5989 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5990 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5991 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5992 DW_CFA_nop, DW_CFA_nop
5993 };
5994
765e526c 5995static const struct elf_x86_lazy_plt_layout elf_i386_nacl_plt =
a27e4371
RM		 5996 {
5997 elf_i386_nacl_plt0_entry, /* plt0_entry */
5998 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
a27e4371
RM		 5999 elf_i386_nacl_plt_entry, /* plt_entry */
6000 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
765e526c
L		 6001 2, /* plt0_got1_offset */
6002 8, /* plt0_got2_offset */
6003 0, /* plt0_got2_insn_end */
a27e4371
RM		 6004 2, /* plt_got_offset */
6005 33, /* plt_reloc_offset */
6006 38, /* plt_plt_offset */
765e526c
L		 6007 0, /* plt_got_insn_size */
6008 0, /* plt_plt_insn_end */
a27e4371
RM		 6009 32, /* plt_lazy_offset */
6010 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
6011 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
6012 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
f604c2a2 6013 sizeof (elf_i386_nacl_eh_frame_plt) /* eh_frame_plt_size */
a27e4371
RM		 6014 };
6015
6016static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
6017 {
f604c2a2
L		 6018 0x90, /* plt0_pad_byte: nop insn */
6019 is_nacl /* os */
a27e4371
RM		 6020 };
6021
64b384e1
RM		 6022static bfd_boolean
6023elf32_i386_nacl_elf_object_p (bfd *abfd)
6024{
6025 /* Set the right machine number for a NaCl i386 ELF32 file. */
6026 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
6027 return TRUE;
6028}
6029
a27e4371
RM		 6030#undef elf_backend_arch_data
6031#define elf_backend_arch_data &elf_i386_nacl_arch_bed
6032
64b384e1
RM		 6033#undef elf_backend_object_p
6034#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 6035#undef elf_backend_modify_segment_map
6036#define elf_backend_modify_segment_map nacl_modify_segment_map
6037#undef elf_backend_modify_program_headers
6038#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 6039#undef elf_backend_final_write_processing
6040#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6041
a27e4371
RM		 6042#include "elf32-target.h"
6043
5a68afcf 6044/* Restore defaults. */
64b384e1 6045#undef elf_backend_object_p
5a68afcf
RM		 6046#undef elf_backend_modify_segment_map
6047#undef elf_backend_modify_program_headers
887badb3 6048#undef elf_backend_final_write_processing
5a68afcf 6049
eac338cf
PB		 6050/* VxWorks support. */
6051
6052#undef TARGET_LITTLE_SYM
6d00b590 6053#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 6054#undef TARGET_LITTLE_NAME
6055#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 6056#undef ELF_OSABI
1587442d
L		 6057#undef ELF_MAXPAGESIZE
6058#define ELF_MAXPAGESIZE 0x1000
a27e4371
RM		 6059#undef elf_backend_plt_alignment
6060#define elf_backend_plt_alignment 4
eac338cf 6061
23209a78
RM		 6062static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
6063 {
6064 0x90, /* plt0_pad_byte */
f604c2a2 6065 is_vxworks /* os */
23209a78 6066 };
eac338cf 6067
23209a78
RM		 6068#undef elf_backend_arch_data
6069#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 6070
13285a1b 6071#undef elf_backend_relocs_compatible
eac338cf
PB		 6072#undef elf_backend_add_symbol_hook
6073#define elf_backend_add_symbol_hook \
6074 elf_vxworks_add_symbol_hook
6075#undef elf_backend_link_output_symbol_hook
6076#define elf_backend_link_output_symbol_hook \
9c72ff84 6077 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 6078#undef elf_backend_emit_relocs
6079#define elf_backend_emit_relocs elf_vxworks_emit_relocs
6080#undef elf_backend_final_write_processing
6081#define elf_backend_final_write_processing \
6082 elf_vxworks_final_write_processing
7dc98aea 6083#undef elf_backend_static_tls_alignment
eac338cf
PB		 6084
6085/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
6086 define it. */
6087#undef elf_backend_want_plt_sym
6088#define elf_backend_want_plt_sym 1
6089
6090#undef elf32_bed
6091#define elf32_bed elf32_i386_vxworks_bed
6092
6093#include "elf32-target.h"
GDB Binutils - Deliverables
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