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[amd64] Invalid return address after displaced stepping
[thirdparty/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b90efa5b 2 Copyright (C) 1993-2015 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
252b5132 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
252b5132
RH		 23#include "bfdlink.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
5a68afcf 26#include "elf-nacl.h"
eac338cf 27#include "elf-vxworks.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L		 29#include "objalloc.h"
30#include "hashtab.h"
e41b3a13 31#include "dwarf2.h"
252b5132 32
55fd94b0
AM		 33/* 386 uses REL relocations instead of RELA. */
34#define USE_REL 1
252b5132
RH		 35
36#include "elf/i386.h"
37
38static reloc_howto_type elf_howto_table[]=
39{
6346d5ca 40 HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
1b452ec6 41 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 42 TRUE, 0x00000000, 0x00000000, FALSE),
43 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 44 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 45 TRUE, 0xffffffff, 0xffffffff, FALSE),
46 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 47 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 48 TRUE, 0xffffffff, 0xffffffff, TRUE),
49 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 50 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 51 TRUE, 0xffffffff, 0xffffffff, FALSE),
52 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 53 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 54 TRUE, 0xffffffff, 0xffffffff, TRUE),
55 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 56 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 57 TRUE, 0xffffffff, 0xffffffff, FALSE),
58 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 59 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 60 TRUE, 0xffffffff, 0xffffffff, FALSE),
61 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 62 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 63 TRUE, 0xffffffff, 0xffffffff, FALSE),
64 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 65 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 66 TRUE, 0xffffffff, 0xffffffff, FALSE),
67 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 68 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 69 TRUE, 0xffffffff, 0xffffffff, FALSE),
70 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 71 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 72 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 73
dc47f327
AM		 74 /* We have a gap in the reloc numbers here.
75 R_386_standard counts the number up to this point, and
76 R_386_ext_offset is the value to subtract from a reloc type of
77 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 78#define R_386_standard (R_386_GOTPC + 1)
79#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 80
37e55690 81 /* These relocs are a GNU extension. */
b34976b6 82 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 83 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 84 TRUE, 0xffffffff, 0xffffffff, FALSE),
85 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 86 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 87 TRUE, 0xffffffff, 0xffffffff, FALSE),
88 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 89 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 90 TRUE, 0xffffffff, 0xffffffff, FALSE),
91 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 92 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 93 TRUE, 0xffffffff, 0xffffffff, FALSE),
94 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 95 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 96 TRUE, 0xffffffff, 0xffffffff, FALSE),
97 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 98 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 99 TRUE, 0xffffffff, 0xffffffff, FALSE),
100 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 101 bfd_elf_generic_reloc, "R_386_16",
b34976b6 102 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 103 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 104 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 105 TRUE, 0xffff, 0xffff, TRUE),
106 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 107 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 108 TRUE, 0xff, 0xff, FALSE),
109 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 110 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 111 TRUE, 0xff, 0xff, TRUE),
dc47f327 112
55fd94b0
AM		 113#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
114#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 115 /* These are common with Solaris TLS implementation. */
b34976b6 116 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 117 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 118 TRUE, 0xffffffff, 0xffffffff, FALSE),
119 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 120 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 121 TRUE, 0xffffffff, 0xffffffff, FALSE),
122 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 123 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 124 TRUE, 0xffffffff, 0xffffffff, FALSE),
125 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 126 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 127 TRUE, 0xffffffff, 0xffffffff, FALSE),
128 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 129 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 130 TRUE, 0xffffffff, 0xffffffff, FALSE),
131 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 132 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 133 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L		 134 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
135 bfd_elf_generic_reloc, "R_386_SIZE32",
136 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 137 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
139 TRUE, 0xffffffff, 0xffffffff, FALSE),
140 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
141 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
142 FALSE, 0, 0, FALSE),
143 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_386_TLS_DESC",
145 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 146 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
147 bfd_elf_generic_reloc, "R_386_IRELATIVE",
148 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 149
150 /* Another gap. */
cbe950e9
L		 151#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
152#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
252b5132
RH		 153
154/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 155 HOWTO (R_386_GNU_VTINHERIT, /* type */
156 0, /* rightshift */
157 2, /* size (0 = byte, 1 = short, 2 = long) */
158 0, /* bitsize */
b34976b6 159 FALSE, /* pc_relative */
252b5132
RH		 160 0, /* bitpos */
161 complain_overflow_dont, /* complain_on_overflow */
162 NULL, /* special_function */
163 "R_386_GNU_VTINHERIT", /* name */
b34976b6 164 FALSE, /* partial_inplace */
252b5132
RH		 165 0, /* src_mask */
166 0, /* dst_mask */
b34976b6 167 FALSE), /* pcrel_offset */
252b5132
RH		 168
169/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 170 HOWTO (R_386_GNU_VTENTRY, /* type */
171 0, /* rightshift */
172 2, /* size (0 = byte, 1 = short, 2 = long) */
173 0, /* bitsize */
b34976b6 174 FALSE, /* pc_relative */
252b5132
RH		 175 0, /* bitpos */
176 complain_overflow_dont, /* complain_on_overflow */
177 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
178 "R_386_GNU_VTENTRY", /* name */
b34976b6 179 FALSE, /* partial_inplace */
252b5132
RH		 180 0, /* src_mask */
181 0, /* dst_mask */
b34976b6 182 FALSE) /* pcrel_offset */
dc47f327 183
55fd94b0 184#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 185
186};
187
252b5132 188#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 189#define TRACE(str) \
190 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 191#else
192#define TRACE(str)
193#endif
194
195static reloc_howto_type *
55fd94b0
AM		 196elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
197 bfd_reloc_code_real_type code)
252b5132
RH		 198{
199 switch (code)
200 {
201 case BFD_RELOC_NONE:
202 TRACE ("BFD_RELOC_NONE");
55fd94b0 203 return &elf_howto_table[R_386_NONE];
252b5132
RH		 204
205 case BFD_RELOC_32:
206 TRACE ("BFD_RELOC_32");
55fd94b0 207 return &elf_howto_table[R_386_32];
252b5132
RH		 208
209 case BFD_RELOC_CTOR:
210 TRACE ("BFD_RELOC_CTOR");
55fd94b0 211 return &elf_howto_table[R_386_32];
252b5132
RH		 212
213 case BFD_RELOC_32_PCREL:
214 TRACE ("BFD_RELOC_PC32");
55fd94b0 215 return &elf_howto_table[R_386_PC32];
252b5132
RH		 216
217 case BFD_RELOC_386_GOT32:
218 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 219 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 220
221 case BFD_RELOC_386_PLT32:
222 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 223 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 224
225 case BFD_RELOC_386_COPY:
226 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 227 return &elf_howto_table[R_386_COPY];
252b5132
RH		 228
229 case BFD_RELOC_386_GLOB_DAT:
230 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 231 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 232
233 case BFD_RELOC_386_JUMP_SLOT:
234 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 235 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 236
237 case BFD_RELOC_386_RELATIVE:
238 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 239 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 240
241 case BFD_RELOC_386_GOTOFF:
242 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 243 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 244
245 case BFD_RELOC_386_GOTPC:
246 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 247 return &elf_howto_table[R_386_GOTPC];
252b5132 248
37e55690
JJ		 249 /* These relocs are a GNU extension. */
250 case BFD_RELOC_386_TLS_TPOFF:
251 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 252 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 253
254 case BFD_RELOC_386_TLS_IE:
255 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 256 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 257
258 case BFD_RELOC_386_TLS_GOTIE:
259 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 260 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 261
13ae64f3
JJ		 262 case BFD_RELOC_386_TLS_LE:
263 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 264 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 265
266 case BFD_RELOC_386_TLS_GD:
267 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 268 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 269
270 case BFD_RELOC_386_TLS_LDM:
271 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 272 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 273
252b5132
RH		 274 case BFD_RELOC_16:
275 TRACE ("BFD_RELOC_16");
55fd94b0 276 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 277
278 case BFD_RELOC_16_PCREL:
279 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 280 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 281
282 case BFD_RELOC_8:
283 TRACE ("BFD_RELOC_8");
55fd94b0 284 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 285
286 case BFD_RELOC_8_PCREL:
287 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 288 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 289
13ae64f3
JJ		 290 /* Common with Sun TLS implementation. */
291 case BFD_RELOC_386_TLS_LDO_32:
292 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 293 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 294
295 case BFD_RELOC_386_TLS_IE_32:
296 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 297 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 298
299 case BFD_RELOC_386_TLS_LE_32:
300 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 301 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 302
303 case BFD_RELOC_386_TLS_DTPMOD32:
304 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 305 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 306
307 case BFD_RELOC_386_TLS_DTPOFF32:
308 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 309 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 310
311 case BFD_RELOC_386_TLS_TPOFF32:
312 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 313 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 314
1788fc08
L		 315 case BFD_RELOC_SIZE32:
316 TRACE ("BFD_RELOC_SIZE32");
317 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
318
67a4f2b7
AO		 319 case BFD_RELOC_386_TLS_GOTDESC:
320 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
321 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
322
323 case BFD_RELOC_386_TLS_DESC_CALL:
324 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
325 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
326
327 case BFD_RELOC_386_TLS_DESC:
328 TRACE ("BFD_RELOC_386_TLS_DESC");
329 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
330
cbe950e9
L		 331 case BFD_RELOC_386_IRELATIVE:
332 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 333 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 334
252b5132
RH		 335 case BFD_RELOC_VTABLE_INHERIT:
336 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 337 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 338
339 case BFD_RELOC_VTABLE_ENTRY:
340 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 341 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 342
343 default:
344 break;
345 }
346
347 TRACE ("Unknown");
348 return 0;
349}
350
157090f7
AM		 351static reloc_howto_type *
352elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
353 const char *r_name)
354{
355 unsigned int i;
356
357 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
358 if (elf_howto_table[i].name != NULL
359 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
360 return &elf_howto_table[i];
361
362 return NULL;
363}
364
142411ca
L		 365static reloc_howto_type *
366elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 367{
dc47f327
AM		 368 unsigned int indx;
369
370 if ((indx = r_type) >= R_386_standard
371 && ((indx = r_type - R_386_ext_offset) - R_386_standard
372 >= R_386_ext - R_386_standard)
13ae64f3 373 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9
L		 374 >= R_386_irelative - R_386_ext)
375 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
376 >= R_386_vt - R_386_irelative))
252b5132 377 {
d003868e
AM		 378 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
379 abfd, (int) r_type);
55fd94b0 380 indx = R_386_NONE;
252b5132 381 }
06614111
NC		 382 /* PR 17512: file: 0f67f69d. */
383 if (elf_howto_table [indx].type != r_type)
384 return NULL;
142411ca
L		 385 return &elf_howto_table[indx];
386}
387
388static void
389elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
390 arelent *cache_ptr,
391 Elf_Internal_Rela *dst)
392{
393 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
394 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 395}
396
397/* Return whether a symbol name implies a local label. The UnixWare
398 2.1 cc generates temporary symbols that start with .X, so we
399 recognize them here. FIXME: do other SVR4 compilers also use .X?.
400 If so, we should move the .X recognition into
401 _bfd_elf_is_local_label_name. */
402
b34976b6 403static bfd_boolean
55fd94b0 404elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 405{
406 if (name[0] == '.' && name[1] == 'X')
b34976b6 407 return TRUE;
252b5132
RH		 408
409 return _bfd_elf_is_local_label_name (abfd, name);
410}
411\f
38701953 412/* Support for core dump NOTE sections. */
61adc1a4 413
b34976b6 414static bfd_boolean
55fd94b0 415elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 416{
417 int offset;
eea6121a 418 size_t size;
38701953 419
61adc1a4 420 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 421 {
61adc1a4
NC		 422 int pr_version = bfd_get_32 (abfd, note->descdata);
423
424 if (pr_version != 1)
425 return FALSE;
426
427 /* pr_cursig */
228e534f 428 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 429
430 /* pr_pid */
228e534f 431 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 432
433 /* pr_reg */
434 offset = 28;
eea6121a 435 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 436 }
437 else
438 {
439 switch (note->descsz)
440 {
441 default:
442 return FALSE;
38701953 443
61adc1a4
NC		 444 case 144: /* Linux/i386 */
445 /* pr_cursig */
228e534f 446 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 447
61adc1a4 448 /* pr_pid */
228e534f 449 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 450
61adc1a4
NC		 451 /* pr_reg */
452 offset = 72;
eea6121a 453 size = 68;
38701953 454
61adc1a4
NC		 455 break;
456 }
38701953
AM		 457 }
458
459 /* Make a ".reg/999" section. */
460 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 461 size, note->descpos + offset);
38701953
AM		 462}
463
b34976b6 464static bfd_boolean
55fd94b0 465elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 466{
61adc1a4 467 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 468 {
61adc1a4
NC		 469 int pr_version = bfd_get_32 (abfd, note->descdata);
470
471 if (pr_version != 1)
b34976b6 472 return FALSE;
38701953 473
228e534f 474 elf_tdata (abfd)->core->program
61adc1a4 475 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 476 elf_tdata (abfd)->core->command
61adc1a4
NC		 477 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
478 }
479 else
480 {
481 switch (note->descsz)
482 {
483 default:
484 return FALSE;
485
486 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 487 elf_tdata (abfd)->core->pid
261b8d08 488 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 489 elf_tdata (abfd)->core->program
61adc1a4 490 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 491 elf_tdata (abfd)->core->command
61adc1a4
NC		 492 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
493 }
38701953
AM		 494 }
495
496 /* Note that for some reason, a spurious space is tacked
497 onto the end of the args in some (at least one anyway)
498 implementations, so strip it off if it exists. */
38701953 499 {
228e534f 500 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 501 int n = strlen (command);
502
503 if (0 < n && command[n - 1] == ' ')
504 command[n - 1] = '\0';
505 }
506
b34976b6 507 return TRUE;
38701953
AM		 508}
509\f
510/* Functions for the i386 ELF linker.
511
512 In order to gain some understanding of code in this file without
513 knowing all the intricate details of the linker, note the
514 following:
515
516 Functions named elf_i386_* are called by external routines, other
517 functions are only called locally. elf_i386_* functions appear
518 in this file more or less in the order in which they are called
519 from external routines. eg. elf_i386_check_relocs is called
520 early in the link process, elf_i386_finish_dynamic_sections is
521 one of the last functions. */
522
252b5132
RH		 523
524/* The name of the dynamic interpreter. This is put in the .interp
525 section. */
526
527#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
528
a23b6845
AM		 529/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
530 copying dynamic variables from a shared lib into an app's dynbss
531 section, and instead use a dynamic relocation to point into the
532 shared lib. */
533#define ELIMINATE_COPY_RELOCS 1
534
252b5132
RH		 535/* The size in bytes of an entry in the procedure linkage table. */
536
537#define PLT_ENTRY_SIZE 16
538
539/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 540 this. See the SVR4 ABI i386 supplement to see how this works.
541 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 542
eac338cf 543static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 544{
545 0xff, 0x35, /* pushl contents of address */
546 0, 0, 0, 0, /* replaced with address of .got + 4. */
547 0xff, 0x25, /* jmp indirect */
eac338cf 548 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 549};
550
551/* Subsequent entries in an absolute procedure linkage table look like
552 this. */
553
554static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
555{
556 0xff, 0x25, /* jmp indirect */
557 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
558 0x68, /* pushl immediate */
559 0, 0, 0, 0, /* replaced with offset into relocation table. */
560 0xe9, /* jmp relative */
561 0, 0, 0, 0 /* replaced with offset to start of .plt. */
562};
563
eac338cf
PB		 564/* The first entry in a PIC procedure linkage table look like this.
565 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 566
eac338cf 567static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 568{
569 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 570 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 571};
572
573/* Subsequent entries in a PIC procedure linkage table look like this. */
574
575static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
576{
577 0xff, 0xa3, /* jmp *offset(%ebx) */
578 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
579 0x68, /* pushl immediate */
580 0, 0, 0, 0, /* replaced with offset into relocation table. */
581 0xe9, /* jmp relative */
582 0, 0, 0, 0 /* replaced with offset to start of .plt. */
583};
584
dd7e64d4
L		 585/* Entries in the GOT procedure linkage table look like this. */
586
587static const bfd_byte elf_i386_got_plt_entry[8] =
588{
589 0xff, 0x25, /* jmp indirect */
590 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
591 0x66, 0x90 /* xchg %ax,%ax */
592};
593
594/* Entries in the PIC GOT procedure linkage table look like this. */
595
596static const bfd_byte elf_i386_pic_got_plt_entry[8] =
597{
598 0xff, 0xa3, /* jmp *offset(%ebx) */
599 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
600 0x66, 0x90 /* xchg %ax,%ax */
601};
602
e41b3a13
JJ		 603/* .eh_frame covering the .plt section. */
604
605static const bfd_byte elf_i386_eh_frame_plt[] =
606{
607#define PLT_CIE_LENGTH 20
608#define PLT_FDE_LENGTH 36
609#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
610#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
611 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
612 0, 0, 0, 0, /* CIE ID */
613 1, /* CIE version */
614 'z', 'R', 0, /* Augmentation string */
615 1, /* Code alignment factor */
616 0x7c, /* Data alignment factor */
617 8, /* Return address column */
618 1, /* Augmentation size */
619 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
620 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
621 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
622 DW_CFA_nop, DW_CFA_nop,
623
624 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
625 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
626 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
627 0, 0, 0, 0, /* .plt size goes here */
628 0, /* Augmentation size */
629 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
630 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
631 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
632 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
633 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
634 11, /* Block length */
635 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
636 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
637 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 638 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 639 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
640};
641
25e762b9
RM		 642struct elf_i386_plt_layout
643{
644 /* The first entry in an absolute procedure linkage table looks like this. */
645 const bfd_byte *plt0_entry;
646 unsigned int plt0_entry_size;
647
648 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
649 unsigned int plt0_got1_offset;
650 unsigned int plt0_got2_offset;
651
652 /* Later entries in an absolute procedure linkage table look like this. */
653 const bfd_byte *plt_entry;
654 unsigned int plt_entry_size;
655
656 /* Offsets into plt_entry that are to be replaced with... */
657 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
658 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
659 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
660
661 /* Offset into plt_entry where the initial value of the GOT entry points. */
662 unsigned int plt_lazy_offset;
663
664 /* The first entry in a PIC procedure linkage table looks like this. */
665 const bfd_byte *pic_plt0_entry;
666
667 /* Subsequent entries in a PIC procedure linkage table look like this. */
668 const bfd_byte *pic_plt_entry;
669
670 /* .eh_frame covering the .plt section. */
671 const bfd_byte *eh_frame_plt;
672 unsigned int eh_frame_plt_size;
673};
674
675#define GET_PLT_ENTRY_SIZE(abfd) \
676 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
677
678/* These are the standard parameters. */
679static const struct elf_i386_plt_layout elf_i386_plt =
680 {
681 elf_i386_plt0_entry, /* plt0_entry */
682 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
683 2, /* plt0_got1_offset */
684 8, /* plt0_got2_offset */
685 elf_i386_plt_entry, /* plt_entry */
686 PLT_ENTRY_SIZE, /* plt_entry_size */
687 2, /* plt_got_offset */
688 7, /* plt_reloc_offset */
689 12, /* plt_plt_offset */
690 6, /* plt_lazy_offset */
691 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
692 elf_i386_pic_plt_entry, /* pic_plt_entry */
693 elf_i386_eh_frame_plt, /* eh_frame_plt */
694 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
695 };
696\f
697
eac338cf
PB		 698/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
699 for the PLTResolve stub and then for each PLT entry. */
700#define PLTRESOLVE_RELOCS_SHLIB 0
701#define PLTRESOLVE_RELOCS 2
702#define PLT_NON_JUMP_SLOT_RELOCS 2
703
23209a78
RM		 704/* Architecture-specific backend data for i386. */
705
706struct elf_i386_backend_data
707{
25e762b9
RM		 708 /* Parameters describing PLT generation. */
709 const struct elf_i386_plt_layout *plt;
710
23209a78
RM		 711 /* Value used to fill the unused bytes of the first PLT entry. */
712 bfd_byte plt0_pad_byte;
713
714 /* True if the target system is VxWorks. */
715 int is_vxworks;
716};
717
718#define get_elf_i386_backend_data(abfd) \
719 ((const struct elf_i386_backend_data *) \
720 get_elf_backend_data (abfd)->arch_data)
721
722/* These are the standard parameters. */
723static const struct elf_i386_backend_data elf_i386_arch_bed =
724 {
25e762b9 725 &elf_i386_plt, /* plt */
23209a78
RM		 726 0, /* plt0_pad_byte */
727 0, /* is_vxworks */
728 };
729
730#define elf_backend_arch_data &elf_i386_arch_bed
731
252b5132
RH		 732/* i386 ELF linker hash entry. */
733
734struct elf_i386_link_hash_entry
735{
ebe50bae 736 struct elf_link_hash_entry elf;
252b5132 737
0c715baa 738 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 739 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 740
37e55690
JJ		 741#define GOT_UNKNOWN 0
742#define GOT_NORMAL 1
743#define GOT_TLS_GD 2
744#define GOT_TLS_IE 4
745#define GOT_TLS_IE_POS 5
746#define GOT_TLS_IE_NEG 6
747#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 748#define GOT_TLS_GDESC 8
749#define GOT_TLS_GD_BOTH_P(type) \
750 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
751#define GOT_TLS_GD_P(type) \
752 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
753#define GOT_TLS_GDESC_P(type) \
754 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
755#define GOT_TLS_GD_ANY_P(type) \
756 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 757 unsigned char tls_type;
67a4f2b7 758
d5597ebc
L		 759 /* Symbol is referenced by R_386_GOTOFF relocation. */
760 unsigned int gotoff_ref : 1;
761
dd7e64d4
L		 762 /* Information about the GOT PLT entry. Filled when there are both
763 GOT and PLT relocations against the same function. */
764 union gotplt_union plt_got;
765
67a4f2b7
AO		 766 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
767 starting at the end of the jump table. */
768 bfd_vma tlsdesc_got;
13ae64f3
JJ		 769};
770
771#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
772
773struct elf_i386_obj_tdata
774{
775 struct elf_obj_tdata root;
776
777 /* tls_type for each local got entry. */
778 char *local_got_tls_type;
67a4f2b7
AO		 779
780 /* GOTPLT entries for TLS descriptors. */
781 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 782};
783
13ae64f3
JJ		 784#define elf_i386_tdata(abfd) \
785 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
786
787#define elf_i386_local_got_tls_type(abfd) \
788 (elf_i386_tdata (abfd)->local_got_tls_type)
789
67a4f2b7
AO		 790#define elf_i386_local_tlsdesc_gotent(abfd) \
791 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
792
0ffa91dd
NC		 793#define is_i386_elf(bfd) \
794 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
795 && elf_tdata (bfd) != NULL \
4dfe6ac6 796 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 797
b34976b6 798static bfd_boolean
55fd94b0 799elf_i386_mkobject (bfd *abfd)
13ae64f3 800{
0ffa91dd 801 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 802 I386_ELF_DATA);
13ae64f3 803}
cedb70c5 804
252b5132
RH		 805/* i386 ELF linker hash table. */
806
807struct elf_i386_link_hash_table
808{
ebe50bae 809 struct elf_link_hash_table elf;
252b5132 810
6725bdbf 811 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 812 asection *sdynbss;
813 asection *srelbss;
e41b3a13 814 asection *plt_eh_frame;
dd7e64d4 815 asection *plt_got;
9635fe29 816
4dfe6ac6
NC		 817 union
818 {
13ae64f3
JJ		 819 bfd_signed_vma refcount;
820 bfd_vma offset;
821 } tls_ldm_got;
822
67a4f2b7
AO		 823 /* The amount of space used by the reserved portion of the sgotplt
824 section, plus whatever space is used by the jump slots. */
825 bfd_vma sgotplt_jump_table_size;
826
87d72d41
AM		 827 /* Small local sym cache. */
828 struct sym_cache sym_cache;
9f03412a
AO		 829
830 /* _TLS_MODULE_BASE_ symbol. */
831 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 832
833 /* Used by local STT_GNU_IFUNC symbols. */
834 htab_t loc_hash_table;
4dfe6ac6
NC		 835 void * loc_hash_memory;
836
837 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
838 asection *srelplt2;
839
4dfe6ac6
NC		 840 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
841 bfd_vma next_tls_desc_index;
e1f98742
L		 842
843 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
844 bfd_vma next_jump_slot_index;
845
846 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
847 bfd_vma next_irelative_index;
6725bdbf 848};
252b5132
RH		 849
850/* Get the i386 ELF linker hash table from a link_info structure. */
851
852#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 853 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
854 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 855
67a4f2b7 856#define elf_i386_compute_jump_table_size(htab) \
998d811a 857 ((htab)->elf.srelplt->reloc_count * 4)
67a4f2b7 858
252b5132
RH		 859/* Create an entry in an i386 ELF linker hash table. */
860
861static struct bfd_hash_entry *
eb4ff4d6
L		 862elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
863 struct bfd_hash_table *table,
864 const char *string)
252b5132 865{
252b5132
RH		 866 /* Allocate the structure if it has not already been allocated by a
867 subclass. */
ebe50bae
AM		 868 if (entry == NULL)
869 {
a50b1753
NC		 870 entry = (struct bfd_hash_entry *)
871 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 872 if (entry == NULL)
873 return entry;
874 }
252b5132
RH		 875
876 /* Call the allocation method of the superclass. */
ebe50bae
AM		 877 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
878 if (entry != NULL)
252b5132 879 {
ebe50bae
AM		 880 struct elf_i386_link_hash_entry *eh;
881
882 eh = (struct elf_i386_link_hash_entry *) entry;
883 eh->dyn_relocs = NULL;
13ae64f3 884 eh->tls_type = GOT_UNKNOWN;
d5597ebc 885 eh->gotoff_ref = 0;
dd7e64d4 886 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 887 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 888 }
889
ebe50bae 890 return entry;
252b5132
RH		 891}
892
c25bc9fc
L		 893/* Compute a hash of a local hash entry. We use elf_link_hash_entry
894 for local symbol so that we can handle local STT_GNU_IFUNC symbols
895 as global symbol. We reuse indx and dynstr_index for local symbol
896 hash since they aren't used by global symbols in this backend. */
897
898static hashval_t
899elf_i386_local_htab_hash (const void *ptr)
900{
901 struct elf_link_hash_entry *h
902 = (struct elf_link_hash_entry *) ptr;
d2149d72 903 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 904}
905
906/* Compare local hash entries. */
907
908static int
909elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
910{
911 struct elf_link_hash_entry *h1
912 = (struct elf_link_hash_entry *) ptr1;
913 struct elf_link_hash_entry *h2
914 = (struct elf_link_hash_entry *) ptr2;
915
916 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
917}
918
919/* Find and/or create a hash entry for local symbol. */
920
921static struct elf_link_hash_entry *
922elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
923 bfd *abfd, const Elf_Internal_Rela *rel,
924 bfd_boolean create)
925{
926 struct elf_i386_link_hash_entry e, *ret;
927 asection *sec = abfd->sections;
d2149d72
L		 928 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
929 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 930 void **slot;
931
932 e.elf.indx = sec->id;
933 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
934 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
935 create ? INSERT : NO_INSERT);
936
937 if (!slot)
938 return NULL;
939
940 if (*slot)
941 {
942 ret = (struct elf_i386_link_hash_entry *) *slot;
943 return &ret->elf;
944 }
945
946 ret = (struct elf_i386_link_hash_entry *)
947 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
948 sizeof (struct elf_i386_link_hash_entry));
949 if (ret)
950 {
951 memset (ret, 0, sizeof (*ret));
952 ret->elf.indx = sec->id;
953 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
954 ret->elf.dynindx = -1;
dd7e64d4 955 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 956 *slot = ret;
957 }
958 return &ret->elf;
959}
960
68faa637
AM		 961/* Destroy an i386 ELF linker hash table. */
962
963static void
d495ab0d 964elf_i386_link_hash_table_free (bfd *obfd)
68faa637
AM		 965{
966 struct elf_i386_link_hash_table *htab
d495ab0d 967 = (struct elf_i386_link_hash_table *) obfd->link.hash;
68faa637
AM		 968
969 if (htab->loc_hash_table)
970 htab_delete (htab->loc_hash_table);
971 if (htab->loc_hash_memory)
972 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 973 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 974}
975
252b5132
RH		 976/* Create an i386 ELF linker hash table. */
977
978static struct bfd_link_hash_table *
55fd94b0 979elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 980{
981 struct elf_i386_link_hash_table *ret;
dc810e39 982 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 983
7bf52ea2 984 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 985 if (ret == NULL)
252b5132
RH		 986 return NULL;
987
eb4ff4d6
L		 988 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
989 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 990 sizeof (struct elf_i386_link_hash_entry),
991 I386_ELF_DATA))
252b5132 992 {
e2d34d7d 993 free (ret);
252b5132
RH		 994 return NULL;
995 }
996
c25bc9fc
L		 997 ret->loc_hash_table = htab_try_create (1024,
998 elf_i386_local_htab_hash,
999 elf_i386_local_htab_eq,
1000 NULL);
1001 ret->loc_hash_memory = objalloc_create ();
1002 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1003 {
d495ab0d 1004 elf_i386_link_hash_table_free (abfd);
c25bc9fc
L		 1005 return NULL;
1006 }
d495ab0d 1007 ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
c25bc9fc 1008
ebe50bae 1009 return &ret->elf.root;
252b5132
RH		 1010}
1011
6725bdbf
AM		 1012/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1013 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1014 hash table. */
1015
b34976b6 1016static bfd_boolean
55fd94b0 1017elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1018{
1019 struct elf_i386_link_hash_table *htab;
1020
6725bdbf 1021 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1022 return FALSE;
6725bdbf 1023
6de2ae4a 1024 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1025 if (htab == NULL)
1026 return FALSE;
1027
3d4d4302 1028 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
d5597ebc 1029 if (!htab->sdynbss)
6725bdbf
AM		 1030 abort ();
1031
d5597ebc
L		 1032 if (info->executable)
1033 {
1034 /* Always allow copy relocs for building executables. */
1035 asection *s = bfd_get_linker_section (dynobj, ".rel.bss");
1036 if (s == NULL)
1037 {
1038 const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
1039 s = bfd_make_section_anyway_with_flags (dynobj,
1040 ".rel.bss",
1041 (bed->dynamic_sec_flags
1042 | SEC_READONLY));
1043 if (s == NULL
1044 || ! bfd_set_section_alignment (dynobj, s,
1045 bed->s->log_file_align))
1046 return FALSE;
1047 }
1048 htab->srelbss = s;
1049 }
1050
23209a78 1051 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1052 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1053 &htab->srelplt2))
711de32c 1054 return FALSE;
eac338cf 1055
e41b3a13 1056 if (!info->no_ld_generated_unwind_info
2fe0fd06 1057 && htab->plt_eh_frame == NULL
e4de50d4 1058 && htab->elf.splt != NULL)
e41b3a13 1059 {
bbf96e4e
L		 1060 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1061 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1062 | SEC_LINKER_CREATED);
e41b3a13 1063 htab->plt_eh_frame
bbf96e4e 1064 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1065 if (htab->plt_eh_frame == NULL
1066 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1067 return FALSE;
e41b3a13
JJ		 1068 }
1069
b34976b6 1070 return TRUE;
6725bdbf
AM		 1071}
1072
ebe50bae
AM		 1073/* Copy the extra info we tack onto an elf_link_hash_entry. */
1074
51b64d56 1075static void
fcfa13d2 1076elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1077 struct elf_link_hash_entry *dir,
1078 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1079{
1080 struct elf_i386_link_hash_entry *edir, *eind;
1081
1082 edir = (struct elf_i386_link_hash_entry *) dir;
1083 eind = (struct elf_i386_link_hash_entry *) ind;
1084
bbd7ec4a 1085 if (eind->dyn_relocs != NULL)
ebe50bae 1086 {
bbd7ec4a
AM		 1087 if (edir->dyn_relocs != NULL)
1088 {
e03a8ed8
L		 1089 struct elf_dyn_relocs **pp;
1090 struct elf_dyn_relocs *p;
bbd7ec4a 1091
fcfa13d2 1092 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1093 list. Merge any entries against the same section. */
1094 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1095 {
e03a8ed8 1096 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1097
1098 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1099 if (q->sec == p->sec)
1100 {
1101 q->pc_count += p->pc_count;
1102 q->count += p->count;
1103 *pp = p->next;
1104 break;
1105 }
1106 if (q == NULL)
1107 pp = &p->next;
1108 }
1109 *pp = edir->dyn_relocs;
1110 }
1111
ebe50bae
AM		 1112 edir->dyn_relocs = eind->dyn_relocs;
1113 eind->dyn_relocs = NULL;
1114 }
ebe50bae 1115
cd67d266
JJ		 1116 if (ind->root.type == bfd_link_hash_indirect
1117 && dir->got.refcount <= 0)
1118 {
1119 edir->tls_type = eind->tls_type;
1120 eind->tls_type = GOT_UNKNOWN;
1121 }
81848ca0 1122
d5597ebc
L		 1123 /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
1124 generate a R_386_COPY reloc. */
1125 edir->gotoff_ref |= eind->gotoff_ref;
1126
81848ca0
AM		 1127 if (ELIMINATE_COPY_RELOCS
1128 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1129 && dir->dynamic_adjusted)
1130 {
1131 /* If called to transfer flags for a weakdef during processing
1132 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1133 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1134 dir->ref_dynamic |= ind->ref_dynamic;
1135 dir->ref_regular |= ind->ref_regular;
1136 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1137 dir->needs_plt |= ind->needs_plt;
1138 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1139 }
81848ca0 1140 else
fcfa13d2 1141 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 1142}
1143
142411ca
L		 1144/* Return TRUE if the TLS access code sequence support transition
1145 from R_TYPE. */
1146
1147static bfd_boolean
1148elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1149 bfd_byte *contents,
1150 Elf_Internal_Shdr *symtab_hdr,
1151 struct elf_link_hash_entry **sym_hashes,
1152 unsigned int r_type,
1153 const Elf_Internal_Rela *rel,
1154 const Elf_Internal_Rela *relend)
13ae64f3 1155{
142411ca
L		 1156 unsigned int val, type;
1157 unsigned long r_symndx;
1158 struct elf_link_hash_entry *h;
1159 bfd_vma offset;
1160
1161 /* Get the section contents. */
1162 if (contents == NULL)
1163 {
1164 if (elf_section_data (sec)->this_hdr.contents != NULL)
1165 contents = elf_section_data (sec)->this_hdr.contents;
1166 else
1167 {
1168 /* FIXME: How to better handle error condition? */
1169 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1170 return FALSE;
13ae64f3 1171
142411ca
L		 1172 /* Cache the section contents for elf_link_input_bfd. */
1173 elf_section_data (sec)->this_hdr.contents = contents;
1174 }
1175 }
1176
1177 offset = rel->r_offset;
13ae64f3 1178 switch (r_type)
142411ca
L		 1179 {
1180 case R_386_TLS_GD:
1181 case R_386_TLS_LDM:
1182 if (offset < 2 || (rel + 1) >= relend)
1183 return FALSE;
1184
1185 type = bfd_get_8 (abfd, contents + offset - 2);
1186 if (r_type == R_386_TLS_GD)
1187 {
09e8c3bf 1188 /* Check transition from GD access model. Only
142411ca
L		 1189 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1190 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1191 can transit to different access model. */
1192 if ((offset + 10) > sec->size ||
1193 (type != 0x8d && type != 0x04))
1194 return FALSE;
1195
1196 val = bfd_get_8 (abfd, contents + offset - 1);
1197 if (type == 0x04)
1198 {
1199 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1200 if (offset < 3)
1201 return FALSE;
1202
1203 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1204 return FALSE;
1205
1206 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1207 return FALSE;
1208 }
1209 else
1210 {
1211 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1212 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1213 return FALSE;
1214
1215 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1216 return FALSE;
1217 }
1218 }
1219 else
1220 {
1221 /* Check transition from LD access model. Only
1222 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1223 can transit to different access model. */
1224 if (type != 0x8d || (offset + 9) > sec->size)
1225 return FALSE;
1226
1227 val = bfd_get_8 (abfd, contents + offset - 1);
1228 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1229 return FALSE;
1230 }
1231
1232 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1233 return FALSE;
1234
1235 r_symndx = ELF32_R_SYM (rel[1].r_info);
1236 if (r_symndx < symtab_hdr->sh_info)
1237 return FALSE;
1238
1239 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1240 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1241 may be versioned. */
142411ca
L		 1242 return (h != NULL
1243 && h->root.root.string != NULL
1244 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1245 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1246 && (strncmp (h->root.root.string, "___tls_get_addr",
1247 15) == 0));
142411ca
L		 1248
1249 case R_386_TLS_IE:
1250 /* Check transition from IE access model:
1251 movl foo@indntpoff(%rip), %eax
1252 movl foo@indntpoff(%rip), %reg
1253 addl foo@indntpoff(%rip), %reg
1254 */
1255
1256 if (offset < 1 || (offset + 4) > sec->size)
1257 return FALSE;
1258
1259 /* Check "movl foo@tpoff(%rip), %eax" first. */
1260 val = bfd_get_8 (abfd, contents + offset - 1);
1261 if (val == 0xa1)
1262 return TRUE;
1263
1264 if (offset < 2)
1265 return FALSE;
1266
1267 /* Check movl|addl foo@tpoff(%rip), %reg. */
1268 type = bfd_get_8 (abfd, contents + offset - 2);
1269 return ((type == 0x8b || type == 0x03)
1270 && (val & 0xc7) == 0x05);
1271
1272 case R_386_TLS_GOTIE:
1273 case R_386_TLS_IE_32:
1274 /* Check transition from {IE_32,GOTIE} access model:
1275 subl foo@{tpoff,gontoff}(%reg1), %reg2
1276 movl foo@{tpoff,gontoff}(%reg1), %reg2
1277 addl foo@{tpoff,gontoff}(%reg1), %reg2
1278 */
1279
1280 if (offset < 2 || (offset + 4) > sec->size)
1281 return FALSE;
1282
1283 val = bfd_get_8 (abfd, contents + offset - 1);
1284 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1285 return FALSE;
1286
1287 type = bfd_get_8 (abfd, contents + offset - 2);
1288 return type == 0x8b || type == 0x2b || type == 0x03;
1289
1290 case R_386_TLS_GOTDESC:
1291 /* Check transition from GDesc access model:
1292 leal x@tlsdesc(%ebx), %eax
1293
1294 Make sure it's a leal adding ebx to a 32-bit offset
1295 into any register, although it's probably almost always
1296 going to be eax. */
1297
1298 if (offset < 2 || (offset + 4) > sec->size)
1299 return FALSE;
1300
1301 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1302 return FALSE;
1303
1304 val = bfd_get_8 (abfd, contents + offset - 1);
1305 return (val & 0xc7) == 0x83;
1306
1307 case R_386_TLS_DESC_CALL:
1308 /* Check transition from GDesc access model:
1309 call *x@tlsdesc(%rax)
1310 */
1311 if (offset + 2 <= sec->size)
1312 {
1313 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1314 static const unsigned char call[] = { 0xff, 0x10 };
1315 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1316 }
1317
1318 return FALSE;
1319
1320 default:
1321 abort ();
1322 }
1323}
1324
1325/* Return TRUE if the TLS access transition is OK or no transition
1326 will be performed. Update R_TYPE if there is a transition. */
1327
1328static bfd_boolean
1329elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1330 asection *sec, bfd_byte *contents,
1331 Elf_Internal_Shdr *symtab_hdr,
1332 struct elf_link_hash_entry **sym_hashes,
1333 unsigned int *r_type, int tls_type,
1334 const Elf_Internal_Rela *rel,
1335 const Elf_Internal_Rela *relend,
4c544807
L		 1336 struct elf_link_hash_entry *h,
1337 unsigned long r_symndx)
142411ca
L		 1338{
1339 unsigned int from_type = *r_type;
1340 unsigned int to_type = from_type;
1341 bfd_boolean check = TRUE;
1342
bb1cb422
L		 1343 /* Skip TLS transition for functions. */
1344 if (h != NULL
1345 && (h->type == STT_FUNC
1346 || h->type == STT_GNU_IFUNC))
1347 return TRUE;
1348
142411ca 1349 switch (from_type)
13ae64f3
JJ		 1350 {
1351 case R_386_TLS_GD:
67a4f2b7
AO		 1352 case R_386_TLS_GOTDESC:
1353 case R_386_TLS_DESC_CALL:
13ae64f3 1354 case R_386_TLS_IE_32:
37e55690
JJ		 1355 case R_386_TLS_IE:
1356 case R_386_TLS_GOTIE:
1d85728f 1357 if (info->executable)
142411ca
L		 1358 {
1359 if (h == NULL)
1360 to_type = R_386_TLS_LE_32;
1361 else if (from_type != R_386_TLS_IE
1362 && from_type != R_386_TLS_GOTIE)
1363 to_type = R_386_TLS_IE_32;
1364 }
1365
1366 /* When we are called from elf_i386_relocate_section, CONTENTS
1367 isn't NULL and there may be additional transitions based on
1368 TLS_TYPE. */
1369 if (contents != NULL)
1370 {
1371 unsigned int new_to_type = to_type;
1372
1d85728f 1373 if (info->executable
142411ca
L		 1374 && h != NULL
1375 && h->dynindx == -1
1376 && (tls_type & GOT_TLS_IE))
1377 new_to_type = R_386_TLS_LE_32;
1378
1379 if (to_type == R_386_TLS_GD
1380 || to_type == R_386_TLS_GOTDESC
1381 || to_type == R_386_TLS_DESC_CALL)
1382 {
1383 if (tls_type == GOT_TLS_IE_POS)
1384 new_to_type = R_386_TLS_GOTIE;
1385 else if (tls_type & GOT_TLS_IE)
1386 new_to_type = R_386_TLS_IE_32;
1387 }
1388
1389 /* We checked the transition before when we were called from
1390 elf_i386_check_relocs. We only want to check the new
1391 transition which hasn't been checked before. */
1392 check = new_to_type != to_type && from_type == to_type;
1393 to_type = new_to_type;
1394 }
1395
1396 break;
1397
13ae64f3 1398 case R_386_TLS_LDM:
1d85728f 1399 if (info->executable)
142411ca
L		 1400 to_type = R_386_TLS_LE_32;
1401 break;
1402
1403 default:
1404 return TRUE;
1405 }
1406
1407 /* Return TRUE if there is no transition. */
1408 if (from_type == to_type)
1409 return TRUE;
1410
1411 /* Check if the transition can be performed. */
1412 if (check
1413 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1414 symtab_hdr, sym_hashes,
1415 from_type, rel, relend))
1416 {
2f629d23 1417 reloc_howto_type *from, *to;
4c544807 1418 const char *name;
142411ca
L		 1419
1420 from = elf_i386_rtype_to_howto (abfd, from_type);
1421 to = elf_i386_rtype_to_howto (abfd, to_type);
1422
4c544807
L		 1423 if (h)
1424 name = h->root.root.string;
1425 else
1426 {
4c544807 1427 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1428
4c544807 1429 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1430 if (htab == NULL)
1431 name = "*unknown*";
1432 else
1433 {
1434 Elf_Internal_Sym *isym;
1435
1436 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1437 abfd, r_symndx);
1438 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1439 }
4c544807
L		 1440 }
1441
142411ca
L		 1442 (*_bfd_error_handler)
1443 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1444 "in section `%A' failed"),
4c544807 1445 abfd, sec, from->name, to->name, name,
142411ca
L		 1446 (unsigned long) rel->r_offset);
1447 bfd_set_error (bfd_error_bad_value);
1448 return FALSE;
13ae64f3
JJ		 1449 }
1450
142411ca
L		 1451 *r_type = to_type;
1452 return TRUE;
13ae64f3
JJ		 1453}
1454
c1d11331
L		 1455/* Rename some of the generic section flags to better document how they
1456 are used here. */
1457#define need_convert_mov_to_lea sec_flg0
1458
252b5132 1459/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1460 calculate needed space in the global offset table, procedure linkage
1461 table, and dynamic reloc sections. */
252b5132 1462
b34976b6 1463static bfd_boolean
55fd94b0
AM		 1464elf_i386_check_relocs (bfd *abfd,
1465 struct bfd_link_info *info,
1466 asection *sec,
1467 const Elf_Internal_Rela *relocs)
252b5132 1468{
6725bdbf 1469 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1470 Elf_Internal_Shdr *symtab_hdr;
1471 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1472 const Elf_Internal_Rela *rel;
1473 const Elf_Internal_Rela *rel_end;
252b5132 1474 asection *sreloc;
dd7e64d4 1475 bfd_boolean use_plt_got;
252b5132 1476
1049f94e 1477 if (info->relocatable)
b34976b6 1478 return TRUE;
252b5132 1479
0ffa91dd
NC		 1480 BFD_ASSERT (is_i386_elf (abfd));
1481
6725bdbf 1482 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1483 if (htab == NULL)
1484 return FALSE;
1485
dd7e64d4
L		 1486 use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
1487 && (get_elf_i386_backend_data (abfd)
1488 == &elf_i386_arch_bed));
1489
0ffa91dd 1490 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1491 sym_hashes = elf_sym_hashes (abfd);
252b5132 1492
252b5132
RH		 1493 sreloc = NULL;
1494
1495 rel_end = relocs + sec->reloc_count;
1496 for (rel = relocs; rel < rel_end; rel++)
1497 {
13ae64f3 1498 unsigned int r_type;
252b5132
RH		 1499 unsigned long r_symndx;
1500 struct elf_link_hash_entry *h;
d5597ebc 1501 struct elf_i386_link_hash_entry *eh;
4c544807
L		 1502 Elf_Internal_Sym *isym;
1503 const char *name;
06a6a421 1504 bfd_boolean size_reloc;
252b5132
RH		 1505
1506 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1507 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1508
d9bc7a44 1509 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1510 {
d003868e
AM		 1511 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1512 abfd,
8f615d07 1513 r_symndx);
b34976b6 1514 return FALSE;
f5f31454
L		 1515 }
1516
252b5132 1517 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1518 {
1519 /* A local symbol. */
c2e61a4e
L		 1520 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1521 abfd, r_symndx);
1522 if (isym == NULL)
1523 return FALSE;
c25bc9fc
L		 1524
1525 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1526 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1527 {
9fff0c39 1528 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1529 if (h == NULL)
c2e61a4e 1530 return FALSE;
6bbec505 1531
c25bc9fc
L		 1532 /* Fake a STT_GNU_IFUNC symbol. */
1533 h->type = STT_GNU_IFUNC;
1534 h->def_regular = 1;
1535 h->ref_regular = 1;
1536 h->forced_local = 1;
1537 h->root.type = bfd_link_hash_defined;
1538 }
1539 else
1540 h = NULL;
1541 }
252b5132 1542 else
71cb9464 1543 {
4c544807 1544 isym = NULL;
71cb9464
L		 1545 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1546 while (h->root.type == bfd_link_hash_indirect
1547 || h->root.type == bfd_link_hash_warning)
1548 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1549 }
cbe950e9 1550
d5597ebc 1551 eh = (struct elf_i386_link_hash_entry *) h;
c25bc9fc
L		 1552 if (h != NULL)
1553 {
cbe950e9
L		 1554 /* Create the ifunc sections for static executables. If we
1555 never see an indirect function symbol nor we are building
1556 a static executable, those sections will be empty and
1557 won't appear in output. */
1558 switch (r_type)
1559 {
1560 default:
1561 break;
1562
d5597ebc
L		 1563 case R_386_GOTOFF:
1564 eh->gotoff_ref = 1;
cbe950e9
L		 1565 case R_386_32:
1566 case R_386_PC32:
1567 case R_386_PLT32:
1568 case R_386_GOT32:
9d4057ee
AM		 1569 if (htab->elf.dynobj == NULL)
1570 htab->elf.dynobj = abfd;
1571 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1572 return FALSE;
cbe950e9
L		 1573 break;
1574 }
1575
ad1e85de
L		 1576 /* It is referenced by a non-shared object. */
1577 h->ref_regular = 1;
61315175 1578 h->root.non_ir_ref = 1;
71cb9464 1579 }
252b5132 1580
142411ca
L		 1581 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1582 symtab_hdr, sym_hashes,
1583 &r_type, GOT_UNKNOWN,
23209a78 1584 rel, rel_end, h, r_symndx))
c2e61a4e 1585 return FALSE;
13ae64f3
JJ		 1586
1587 switch (r_type)
252b5132 1588 {
37e55690
JJ		 1589 case R_386_TLS_LDM:
1590 htab->tls_ldm_got.refcount += 1;
1591 goto create_got;
1592
1593 case R_386_PLT32:
1594 /* This symbol requires a procedure linkage table entry. We
1595 actually build the entry in adjust_dynamic_symbol,
1596 because this might be a case of linking PIC code which is
1597 never referenced by a dynamic object, in which case we
1598 don't need to generate a procedure linkage table entry
1599 after all. */
1600
1601 /* If this is a local symbol, we resolve it directly without
1602 creating a procedure linkage table entry. */
1603 if (h == NULL)
1604 continue;
1605
f5385ebf 1606 h->needs_plt = 1;
37e55690
JJ		 1607 h->plt.refcount += 1;
1608 break;
1609
6a3e1bae 1610 case R_386_SIZE32:
06a6a421 1611 size_reloc = TRUE;
6a3e1bae
L		 1612 goto do_size;
1613
13ae64f3 1614 case R_386_TLS_IE_32:
37e55690
JJ		 1615 case R_386_TLS_IE:
1616 case R_386_TLS_GOTIE:
1d85728f 1617 if (!info->executable)
13ae64f3 1618 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1619 /* Fall through */
1620
252b5132 1621 case R_386_GOT32:
13ae64f3 1622 case R_386_TLS_GD:
67a4f2b7
AO		 1623 case R_386_TLS_GOTDESC:
1624 case R_386_TLS_DESC_CALL:
252b5132 1625 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1626 {
1627 int tls_type, old_tls_type;
1628
1629 switch (r_type)
1630 {
1631 default:
1632 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1633 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1634 case R_386_TLS_GOTDESC:
1635 case R_386_TLS_DESC_CALL:
1636 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1637 case R_386_TLS_IE_32:
1638 if (ELF32_R_TYPE (rel->r_info) == r_type)
1639 tls_type = GOT_TLS_IE_NEG;
1640 else
ebcfb3c0
JJ		 1641 /* If this is a GD->IE transition, we may use either of
1642 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1643 tls_type = GOT_TLS_IE;
1644 break;
1645 case R_386_TLS_IE:
1646 case R_386_TLS_GOTIE:
1647 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1648 }
1649
1650 if (h != NULL)
1651 {
1652 h->got.refcount += 1;
1653 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1654 }
1655 else
1656 {
1657 bfd_signed_vma *local_got_refcounts;
1658
1659 /* This is a global offset table entry for a local symbol. */
1660 local_got_refcounts = elf_local_got_refcounts (abfd);
1661 if (local_got_refcounts == NULL)
1662 {
1663 bfd_size_type size;
1664
1665 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1666 size *= (sizeof (bfd_signed_vma)
1667 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1668 local_got_refcounts = (bfd_signed_vma *)
1669 bfd_zalloc (abfd, size);
13ae64f3 1670 if (local_got_refcounts == NULL)
c2e61a4e 1671 return FALSE;
13ae64f3 1672 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1673 elf_i386_local_tlsdesc_gotent (abfd)
1674 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1675 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1676 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1677 }
1678 local_got_refcounts[r_symndx] += 1;
1679 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1680 }
1681
37e55690
JJ		 1682 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1683 tls_type |= old_tls_type;
13ae64f3
JJ		 1684 /* If a TLS symbol is accessed using IE at least once,
1685 there is no point to use dynamic model for it. */
ebcfb3c0 1686 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1687 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1688 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1689 {
67a4f2b7 1690 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1691 tls_type = old_tls_type;
67a4f2b7
AO		 1692 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1693 && GOT_TLS_GD_ANY_P (tls_type))
1694 tls_type |= old_tls_type;
13ae64f3
JJ		 1695 else
1696 {
09a24cbf 1697 if (h)
4c544807
L		 1698 name = h->root.root.string;
1699 else
1700 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1701 NULL);
13ae64f3 1702 (*_bfd_error_handler)
d003868e 1703 (_("%B: `%s' accessed both as normal and "
55fd94b0 1704 "thread local symbol"),
4c544807 1705 abfd, name);
68c4a57e 1706 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1707 return FALSE;
13ae64f3
JJ		 1708 }
1709 }
1710
1711 if (old_tls_type != tls_type)
1712 {
1713 if (h != NULL)
1714 elf_i386_hash_entry (h)->tls_type = tls_type;
1715 else
1716 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1717 }
1718 }
0ac8d2ca
AM		 1719 /* Fall through */
1720
1721 case R_386_GOTOFF:
1722 case R_386_GOTPC:
13ae64f3 1723 create_got:
6de2ae4a 1724 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1725 {
1726 if (htab->elf.dynobj == NULL)
1727 htab->elf.dynobj = abfd;
6de2ae4a 1728 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1729 return FALSE;
0ac8d2ca 1730 }
37e55690
JJ		 1731 if (r_type != R_386_TLS_IE)
1732 break;
1733 /* Fall through */
252b5132 1734
37e55690
JJ		 1735 case R_386_TLS_LE_32:
1736 case R_386_TLS_LE:
1d85728f 1737 if (info->executable)
37e55690 1738 break;
bffbf940 1739 info->flags |= DF_STATIC_TLS;
b34976b6 1740 /* Fall through */
252b5132
RH		 1741
1742 case R_386_32:
1743 case R_386_PC32:
710ab287 1744 if (h != NULL && info->executable)
6725bdbf 1745 {
12d0ee4a 1746 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1747 need a copy reloc. We can't check reliably at this
1748 stage whether the section is read-only, as input
1749 sections have not yet been mapped to output sections.
1750 Tentatively set the flag for now, and correct in
1751 adjust_dynamic_symbol. */
f5385ebf 1752 h->non_got_ref = 1;
12d0ee4a
AM		 1753
1754 /* We may need a .plt entry if the function this reloc
1755 refers to is in a shared lib. */
51b64d56 1756 h->plt.refcount += 1;
c6585bbb 1757 if (r_type != R_386_PC32)
f5385ebf 1758 h->pointer_equality_needed = 1;
6725bdbf 1759 }
7843f00e 1760
06a6a421 1761 size_reloc = FALSE;
6a3e1bae 1762do_size:
252b5132 1763 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1764 against a global symbol, or a non PC relative reloc
1765 against a local symbol, then we need to copy the reloc
1766 into the shared library. However, if we are linking with
1767 -Bsymbolic, we do not need to copy a reloc against a
1768 global symbol which is defined in an object we are
1769 including in the link (i.e., DEF_REGULAR is set). At
1770 this point we have not seen all the input files, so it is
1771 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1772 later (it is never cleared). In case of a weak definition,
1773 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1774 a shared library. We account for that possibility below by
1f655a09
L		 1775 storing information in the relocs_copied field of the hash
1776 table entry. A similar situation occurs when creating
1777 shared libraries and symbol visibility changes render the
12d0ee4a 1778 symbol local.
56882138 1779
12d0ee4a
AM		 1780 If on the other hand, we are creating an executable, we
1781 may need to keep relocations for symbols satisfied by a
1782 dynamic library if we manage to avoid copy relocs for the
1783 symbol. */
1784 if ((info->shared
1785 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1786 && (r_type != R_386_PC32
12d0ee4a 1787 || (h != NULL
55255dae 1788 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1789 || h->root.type == bfd_link_hash_defweak
f5385ebf 1790 || !h->def_regular))))
a23b6845
AM		 1791 || (ELIMINATE_COPY_RELOCS
1792 && !info->shared
12d0ee4a
AM		 1793 && (sec->flags & SEC_ALLOC) != 0
1794 && h != NULL
12d0ee4a 1795 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1796 || !h->def_regular)))
252b5132 1797 {
e03a8ed8
L		 1798 struct elf_dyn_relocs *p;
1799 struct elf_dyn_relocs **head;
ec338859 1800
12d0ee4a
AM		 1801 /* We must copy these reloc types into the output file.
1802 Create a reloc section in dynobj and make room for
1803 this reloc. */
252b5132
RH		 1804 if (sreloc == NULL)
1805 {
0ac8d2ca
AM		 1806 if (htab->elf.dynobj == NULL)
1807 htab->elf.dynobj = abfd;
1808
83bac4b0
NC		 1809 sreloc = _bfd_elf_make_dynamic_reloc_section
1810 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1811
252b5132 1812 if (sreloc == NULL)
c2e61a4e 1813 return FALSE;
252b5132
RH		 1814 }
1815
0c715baa
AM		 1816 /* If this is a global symbol, we count the number of
1817 relocations we need for this symbol. */
1818 if (h != NULL)
252b5132 1819 {
d5597ebc 1820 head = &eh->dyn_relocs;
0c715baa
AM		 1821 }
1822 else
1823 {
ec338859
AM		 1824 /* Track dynamic relocs needed for local syms too.
1825 We really need local syms available to do this
1826 easily. Oh well. */
87d72d41 1827 void **vpp;
ec338859 1828 asection *s;
87d72d41
AM		 1829
1830 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1831 abfd, r_symndx);
1832 if (isym == NULL)
1833 return FALSE;
1834
1835 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1836 if (s == NULL)
87d72d41 1837 s = sec;
ec338859 1838
e81d3500 1839 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1840 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1841 }
1842
1843 p = *head;
1844 if (p == NULL || p->sec != sec)
1845 {
1846 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1847 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1848 amt);
ec338859 1849 if (p == NULL)
c2e61a4e 1850 return FALSE;
ec338859
AM		 1851 p->next = *head;
1852 *head = p;
1853 p->sec = sec;
1854 p->count = 0;
1855 p->pc_count = 0;
252b5132 1856 }
ec338859
AM		 1857
1858 p->count += 1;
06a6a421
L		 1859 /* Count size relocation as PC-relative relocation. */
1860 if (r_type == R_386_PC32 || size_reloc)
ec338859 1861 p->pc_count += 1;
252b5132 1862 }
252b5132
RH		 1863 break;
1864
1865 /* This relocation describes the C++ object vtable hierarchy.
1866 Reconstruct it for later use during GC. */
1867 case R_386_GNU_VTINHERIT:
d17e0c6e 1868 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1869 return FALSE;
252b5132
RH		 1870 break;
1871
1872 /* This relocation describes which C++ vtable entries are actually
1873 used. Record for later use during GC. */
1874 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1875 BFD_ASSERT (h != NULL);
1876 if (h != NULL
1877 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1878 return FALSE;
252b5132
RH		 1879 break;
1880
1881 default:
1882 break;
1883 }
dd7e64d4
L		 1884
1885 if (use_plt_got
1886 && h != NULL
1887 && h->plt.refcount > 0
8ded2ddc
L		 1888 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
1889 || h->got.refcount > 0)
dd7e64d4
L		 1890 && htab->plt_got == NULL)
1891 {
1892 /* Create the GOT procedure linkage table. */
1893 unsigned int plt_got_align;
1894 const struct elf_backend_data *bed;
1895
1896 bed = get_elf_backend_data (info->output_bfd);
1897 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
1898 && (sizeof (elf_i386_got_plt_entry)
1899 == sizeof (elf_i386_pic_got_plt_entry)));
1900 plt_got_align = 3;
1901
1902 if (htab->elf.dynobj == NULL)
1903 htab->elf.dynobj = abfd;
1904 htab->plt_got
1905 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
1906 ".plt.got",
1907 (bed->dynamic_sec_flags
1908 | SEC_ALLOC
1909 | SEC_CODE
1910 | SEC_LOAD
1911 | SEC_READONLY));
1912 if (htab->plt_got == NULL
1913 || !bfd_set_section_alignment (htab->elf.dynobj,
1914 htab->plt_got,
1915 plt_got_align))
1916 return FALSE;
1917 }
c1d11331
L		 1918
1919 if (r_type == R_386_GOT32
1920 && (h == NULL || h->type != STT_GNU_IFUNC))
1921 sec->need_convert_mov_to_lea = 1;
252b5132
RH		 1922 }
1923
b34976b6 1924 return TRUE;
252b5132
RH		 1925}
1926
1927/* Return the section that should be marked against GC for a given
1928 relocation. */
1929
1930static asection *
55fd94b0 1931elf_i386_gc_mark_hook (asection *sec,
07adf181 1932 struct bfd_link_info *info,
55fd94b0
AM		 1933 Elf_Internal_Rela *rel,
1934 struct elf_link_hash_entry *h,
1935 Elf_Internal_Sym *sym)
252b5132
RH		 1936{
1937 if (h != NULL)
07adf181
AM		 1938 switch (ELF32_R_TYPE (rel->r_info))
1939 {
1940 case R_386_GNU_VTINHERIT:
1941 case R_386_GNU_VTENTRY:
1942 return NULL;
1943 }
1944
1945 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1946}
1947
1948/* Update the got entry reference counts for the section being removed. */
1949
b34976b6 1950static bfd_boolean
55fd94b0
AM		 1951elf_i386_gc_sweep_hook (bfd *abfd,
1952 struct bfd_link_info *info,
1953 asection *sec,
1954 const Elf_Internal_Rela *relocs)
252b5132 1955{
4dfe6ac6 1956 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1957 Elf_Internal_Shdr *symtab_hdr;
1958 struct elf_link_hash_entry **sym_hashes;
1959 bfd_signed_vma *local_got_refcounts;
1960 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1961
7dda2462
TG		 1962 if (info->relocatable)
1963 return TRUE;
1964
4dfe6ac6
NC		 1965 htab = elf_i386_hash_table (info);
1966 if (htab == NULL)
1967 return FALSE;
1968
ec338859 1969 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1970
0ffa91dd 1971 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1972 sym_hashes = elf_sym_hashes (abfd);
1973 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1974
1975 relend = relocs + sec->reloc_count;
1976 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1977 {
1978 unsigned long r_symndx;
1979 unsigned int r_type;
1980 struct elf_link_hash_entry *h = NULL;
37e55690 1981
26e41594
AM		 1982 r_symndx = ELF32_R_SYM (rel->r_info);
1983 if (r_symndx >= symtab_hdr->sh_info)
1984 {
26e41594 1985 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1986 while (h->root.type == bfd_link_hash_indirect
1987 || h->root.type == bfd_link_hash_warning)
1988 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1989 }
bb1cb422
L		 1990 else
1991 {
1992 /* A local symbol. */
1993 Elf_Internal_Sym *isym;
1994
1995 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1996 abfd, r_symndx);
1997
1998 /* Check relocation against local STT_GNU_IFUNC symbol. */
1999 if (isym != NULL
2000 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2001 {
2002 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
2003 if (h == NULL)
2004 abort ();
2005 }
2006 }
0c715baa 2007
3db2e7dd
L		 2008 if (h)
2009 {
2010 struct elf_i386_link_hash_entry *eh;
2011 struct elf_dyn_relocs **pp;
2012 struct elf_dyn_relocs *p;
2013
2014 eh = (struct elf_i386_link_hash_entry *) h;
2015 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2016 if (p->sec == sec)
2017 {
2018 /* Everything must go for SEC. */
2019 *pp = p->next;
2020 break;
2021 }
2022 }
2023
26e41594 2024 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 2025 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
2026 symtab_hdr, sym_hashes,
2027 &r_type, GOT_UNKNOWN,
23209a78 2028 rel, relend, h, r_symndx))
142411ca
L		 2029 return FALSE;
2030
26e41594
AM		 2031 switch (r_type)
2032 {
2033 case R_386_TLS_LDM:
4dfe6ac6
NC		 2034 if (htab->tls_ldm_got.refcount > 0)
2035 htab->tls_ldm_got.refcount -= 1;
26e41594 2036 break;
0c715baa 2037
26e41594 2038 case R_386_TLS_GD:
67a4f2b7
AO		 2039 case R_386_TLS_GOTDESC:
2040 case R_386_TLS_DESC_CALL:
26e41594
AM		 2041 case R_386_TLS_IE_32:
2042 case R_386_TLS_IE:
2043 case R_386_TLS_GOTIE:
2044 case R_386_GOT32:
2045 if (h != NULL)
2046 {
2047 if (h->got.refcount > 0)
2048 h->got.refcount -= 1;
bb1cb422
L		 2049 if (h->type == STT_GNU_IFUNC)
2050 {
2051 if (h->plt.refcount > 0)
2052 h->plt.refcount -= 1;
2053 }
26e41594
AM		 2054 }
2055 else if (local_got_refcounts != NULL)
2056 {
2057 if (local_got_refcounts[r_symndx] > 0)
2058 local_got_refcounts[r_symndx] -= 1;
2059 }
2060 break;
0c715baa 2061
26e41594
AM		 2062 case R_386_32:
2063 case R_386_PC32:
1788fc08 2064 case R_386_SIZE32:
3db2e7dd
L		 2065 if (info->shared
2066 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 2067 break;
2068 /* Fall through */
6725bdbf 2069
26e41594
AM		 2070 case R_386_PLT32:
2071 if (h != NULL)
2072 {
2073 if (h->plt.refcount > 0)
2074 h->plt.refcount -= 1;
2075 }
2076 break;
dd5724d5 2077
bb1cb422
L		 2078 case R_386_GOTOFF:
2079 if (h != NULL && h->type == STT_GNU_IFUNC)
2080 {
2081 if (h->got.refcount > 0)
2082 h->got.refcount -= 1;
2083 if (h->plt.refcount > 0)
2084 h->plt.refcount -= 1;
2085 }
2086 break;
2087
26e41594
AM		 2088 default:
2089 break;
2090 }
2091 }
252b5132 2092
b34976b6 2093 return TRUE;
252b5132
RH		 2094}
2095
2096/* Adjust a symbol defined by a dynamic object and referenced by a
2097 regular object. The current definition is in some section of the
2098 dynamic object, but we're not including those sections. We have to
2099 change the definition to something the rest of the link can
2100 understand. */
2101
b34976b6 2102static bfd_boolean
55fd94b0
AM		 2103elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2104 struct elf_link_hash_entry *h)
252b5132 2105{
6725bdbf 2106 struct elf_i386_link_hash_table *htab;
252b5132 2107 asection *s;
5ca5bb35
L		 2108 struct elf_i386_link_hash_entry *eh;
2109 struct elf_dyn_relocs *p;
252b5132 2110
cbe950e9
L		 2111 /* STT_GNU_IFUNC symbol must go through PLT. */
2112 if (h->type == STT_GNU_IFUNC)
2113 {
73bcf233
L		 2114 /* All local STT_GNU_IFUNC references must be treate as local
2115 calls via local PLT. */
5ca5bb35
L		 2116 if (h->ref_regular
2117 && SYMBOL_CALLS_LOCAL (info, h))
2118 {
73bcf233 2119 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2120 struct elf_dyn_relocs **pp;
2121
2122 eh = (struct elf_i386_link_hash_entry *) h;
2123 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2124 {
2125 pc_count += p->pc_count;
2126 p->count -= p->pc_count;
2127 p->pc_count = 0;
73bcf233 2128 count += p->count;
5ca5bb35
L		 2129 if (p->count == 0)
2130 *pp = p->next;
2131 else
2132 pp = &p->next;
2133 }
2134
73bcf233 2135 if (pc_count || count)
5ca5bb35
L		 2136 {
2137 h->needs_plt = 1;
5ca5bb35 2138 h->non_got_ref = 1;
a5479e5f
L		 2139 if (h->plt.refcount <= 0)
2140 h->plt.refcount = 1;
2141 else
2142 h->plt.refcount += 1;
5ca5bb35
L		 2143 }
2144 }
2145
cbe950e9
L		 2146 if (h->plt.refcount <= 0)
2147 {
2148 h->plt.offset = (bfd_vma) -1;
2149 h->needs_plt = 0;
2150 }
2151 return TRUE;
2152 }
2153
252b5132
RH		 2154 /* If this is a function, put it in the procedure linkage table. We
2155 will fill in the contents of the procedure linkage table later,
2156 when we know the address of the .got section. */
2157 if (h->type == STT_FUNC
f5385ebf 2158 || h->needs_plt)
252b5132 2159 {
6725bdbf 2160 if (h->plt.refcount <= 0
9c7a29a3
AM		 2161 || SYMBOL_CALLS_LOCAL (info, h)
2162 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2163 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2164 {
2165 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2166 file, but the symbol was never referred to by a dynamic
2167 object, or if all references were garbage collected. In
2168 such a case, we don't actually need to build a procedure
2169 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2170 h->plt.offset = (bfd_vma) -1;
f5385ebf 2171 h->needs_plt = 0;
252b5132
RH		 2172 }
2173
b34976b6 2174 return TRUE;
252b5132 2175 }
6725bdbf
AM		 2176 else
2177 /* It's possible that we incorrectly decided a .plt reloc was
2178 needed for an R_386_PC32 reloc to a non-function sym in
2179 check_relocs. We can't decide accurately between function and
2180 non-function syms in check-relocs; Objects loaded later in
2181 the link may change h->type. So fix it now. */
bbd7ec4a 2182 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2183
2184 /* If this is a weak symbol, and there is a real definition, the
2185 processor independent code will have arranged for us to see the
2186 real definition first, and we can just use the same value. */
f6e332e6 2187 if (h->u.weakdef != NULL)
252b5132 2188 {
f6e332e6
AM		 2189 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2190 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2191 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2192 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2193 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2194 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2195 return TRUE;
252b5132
RH		 2196 }
2197
2198 /* This is a reference to a symbol defined by a dynamic object which
2199 is not a function. */
2200
2201 /* If we are creating a shared library, we must presume that the
2202 only references to the symbol are via the global offset table.
2203 For such cases we need not do anything here; the relocations will
2204 be handled correctly by relocate_section. */
d5597ebc 2205 if (!info->executable)
b34976b6 2206 return TRUE;
252b5132 2207
7843f00e 2208 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2209 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2210 reloc. */
2211 eh = (struct elf_i386_link_hash_entry *) h;
2212 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2213 return TRUE;
7843f00e 2214
8bd621d8
AM		 2215 /* If -z nocopyreloc was given, we won't generate them either. */
2216 if (info->nocopyreloc)
2217 {
f5385ebf 2218 h->non_got_ref = 0;
b34976b6 2219 return TRUE;
8bd621d8
AM		 2220 }
2221
643796e3 2222 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2223 if (htab == NULL)
2224 return FALSE;
643796e3 2225
d5597ebc
L		 2226 /* If there aren't any dynamic relocs in read-only sections nor
2227 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2228 avoid the copy reloc. This doesn't work on VxWorks, where we can
2229 not have dynamic relocations (other than copy and jump slot
2230 relocations) in an executable. */
23209a78 2231 if (ELIMINATE_COPY_RELOCS
d5597ebc 2232 && !eh->gotoff_ref
23209a78 2233 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2234 {
a23b6845
AM		 2235 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2236 {
2237 s = p->sec->output_section;
2238 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2239 break;
2240 }
2241
a23b6845
AM		 2242 if (p == NULL)
2243 {
f5385ebf 2244 h->non_got_ref = 0;
a23b6845
AM		 2245 return TRUE;
2246 }
ebe50bae
AM		 2247 }
2248
252b5132
RH		 2249 /* We must allocate the symbol in our .dynbss section, which will
2250 become part of the .bss section of the executable. There will be
2251 an entry for this symbol in the .dynsym section. The dynamic
2252 object will contain position independent code, so all references
2253 from the dynamic object to this symbol will go through the global
2254 offset table. The dynamic linker will use the .dynsym entry to
2255 determine the address it must put in the global offset table, so
2256 both the dynamic object and the regular object will refer to the
2257 same memory location for the variable. */
2258
252b5132
RH		 2259 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2260 copy the initial value out of the dynamic object and into the
0ac8d2ca 2261 runtime process image. */
1d7e9d18 2262 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2263 {
eea6121a 2264 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2265 h->needs_copy = 1;
252b5132
RH		 2266 }
2267
0ac8d2ca 2268 s = htab->sdynbss;
252b5132 2269
6cabe1ea 2270 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2271}
2272
6725bdbf 2273/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2274 dynamic relocs. */
6725bdbf 2275
b34976b6 2276static bfd_boolean
eb4ff4d6 2277elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2278{
2279 struct bfd_link_info *info;
2280 struct elf_i386_link_hash_table *htab;
5a15f56f 2281 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2282 struct elf_dyn_relocs *p;
25e762b9 2283 unsigned plt_entry_size;
6725bdbf 2284
e92d460e 2285 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2286 return TRUE;
6725bdbf 2287
cbe950e9 2288 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2289
6725bdbf
AM		 2290 info = (struct bfd_link_info *) inf;
2291 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2292 if (htab == NULL)
2293 return FALSE;
6725bdbf 2294
25e762b9
RM		 2295 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2296
dd7e64d4
L		 2297 /* We can't use the GOT PLT if pointer equality is needed since
2298 finish_dynamic_symbol won't clear symbol value and the dynamic
2299 linker won't update the GOT slot. We will get into an infinite
2300 loop at run-time. */
2301 if (htab->plt_got != NULL
2302 && h->type != STT_GNU_IFUNC
2303 && !h->pointer_equality_needed
2304 && h->plt.refcount > 0
2305 && h->got.refcount > 0)
2306 {
2307 /* Don't use the regular PLT if there are both GOT and GOTPLT
2308 reloctions. */
2309 h->plt.offset = (bfd_vma) -1;
2310
2311 /* Use the GOT PLT. */
2312 eh->plt_got.refcount = 1;
2313 }
2314
cbe950e9
L		 2315 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2316 here if it is defined and referenced in a non-shared object. */
2317 if (h->type == STT_GNU_IFUNC
2318 && h->def_regular)
25e762b9 2319 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
7b70956d
WN		 2320 plt_entry_size,
2321 plt_entry_size, 4);
cbe950e9 2322 else if (htab->elf.dynamic_sections_created
dd7e64d4 2323 && (h->plt.refcount > 0 || eh->plt_got.refcount > 0))
6725bdbf 2324 {
25070364
L		 2325 bfd_boolean use_plt_got;
2326
8ded2ddc 2327 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L		 2328 {
2329 /* Don't use the regular PLT for DF_BIND_NOW. */
2330 h->plt.offset = (bfd_vma) -1;
2331
2332 /* Use the GOT PLT. */
2333 h->got.refcount = 1;
2334 eh->plt_got.refcount = 1;
2335 }
2336
2337 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2338
5a15f56f
AM		 2339 /* Make sure this symbol is output as a dynamic symbol.
2340 Undefined weak syms won't yet be marked as dynamic. */
2341 if (h->dynindx == -1
f5385ebf 2342 && !h->forced_local)
5a15f56f 2343 {
c152c796 2344 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2345 return FALSE;
5a15f56f
AM		 2346 }
2347
4e795f50
AM		 2348 if (info->shared
2349 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2350 {
6de2ae4a 2351 asection *s = htab->elf.splt;
dd7e64d4 2352 asection *got_s = htab->plt_got;
6725bdbf 2353
7c1e8d3e
L		 2354 /* If this is the first .plt entry, make room for the special
2355 first entry. The .plt section is used by prelink to undo
2356 prelinking for dynamic relocations. */
2357 if (s->size == 0)
2358 s->size = plt_entry_size;
2359
dd7e64d4
L		 2360 if (use_plt_got)
2361 eh->plt_got.offset = got_s->size;
2362 else
7c1e8d3e 2363 h->plt.offset = s->size;
6725bdbf 2364
ced53ee5
AM		 2365 /* If this symbol is not defined in a regular file, and we are
2366 not generating a shared library, then set the symbol to this
2367 location in the .plt. This is required to make function
2368 pointers compare as equal between the normal executable and
2369 the shared library. */
2370 if (! info->shared
f5385ebf 2371 && !h->def_regular)
ced53ee5 2372 {
dd7e64d4
L		 2373 if (use_plt_got)
2374 {
2375 /* We need to make a call to the entry of the GOT PLT
2376 instead of regular PLT entry. */
2377 h->root.u.def.section = got_s;
2378 h->root.u.def.value = eh->plt_got.offset;
2379 }
2380 else
2381 {
2382 h->root.u.def.section = s;
2383 h->root.u.def.value = h->plt.offset;
2384 }
ced53ee5 2385 }
6725bdbf 2386
ced53ee5 2387 /* Make room for this entry. */
dd7e64d4
L		 2388 if (use_plt_got)
2389 got_s->size += sizeof (elf_i386_got_plt_entry);
2390 else
2391 {
2392 s->size += plt_entry_size;
6725bdbf 2393
dd7e64d4
L		 2394 /* We also need to make an entry in the .got.plt section,
2395 which will be placed in the .got section by the linker
2396 script. */
2397 htab->elf.sgotplt->size += 4;
6725bdbf 2398
dd7e64d4
L		 2399 /* We also need to make an entry in the .rel.plt section. */
2400 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2401 htab->elf.srelplt->reloc_count++;
2402 }
eac338cf 2403
23209a78
RM		 2404 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2405 && !info->shared)
eac338cf
PB		 2406 {
2407 /* VxWorks has a second set of relocations for each PLT entry
2408 in executables. They go in a separate relocation section,
2409 which is processed by the kernel loader. */
2410
2411 /* There are two relocations for the initial PLT entry: an
2412 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2413 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2414
25e762b9 2415 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2416 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2417
2418 /* There are two extra relocations for each subsequent PLT entry:
2419 an R_386_32 relocation for the GOT entry, and an R_386_32
2420 relocation for the PLT entry. */
2421
2422 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2423 }
6725bdbf 2424 }
ced53ee5
AM		 2425 else
2426 {
51b64d56 2427 h->plt.offset = (bfd_vma) -1;
f5385ebf 2428 h->needs_plt = 0;
ced53ee5 2429 }
6725bdbf
AM		 2430 }
2431 else
2432 {
51b64d56 2433 h->plt.offset = (bfd_vma) -1;
f5385ebf 2434 h->needs_plt = 0;
6725bdbf
AM		 2435 }
2436
67a4f2b7
AO		 2437 eh->tlsdesc_got = (bfd_vma) -1;
2438
37e55690 2439 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2440 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2441 if (h->got.refcount > 0
1d85728f 2442 && info->executable
13ae64f3 2443 && h->dynindx == -1
37e55690 2444 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2445 h->got.offset = (bfd_vma) -1;
13ae64f3 2446 else if (h->got.refcount > 0)
6725bdbf 2447 {
0ac8d2ca 2448 asection *s;
b34976b6 2449 bfd_boolean dyn;
13ae64f3 2450 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2451
5a15f56f
AM		 2452 /* Make sure this symbol is output as a dynamic symbol.
2453 Undefined weak syms won't yet be marked as dynamic. */
2454 if (h->dynindx == -1
f5385ebf 2455 && !h->forced_local)
5a15f56f 2456 {
c152c796 2457 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2458 return FALSE;
5a15f56f
AM		 2459 }
2460
6de2ae4a 2461 s = htab->elf.sgot;
67a4f2b7
AO		 2462 if (GOT_TLS_GDESC_P (tls_type))
2463 {
6de2ae4a 2464 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2465 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2466 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2467 h->got.offset = (bfd_vma) -2;
2468 }
2469 if (! GOT_TLS_GDESC_P (tls_type)
2470 || GOT_TLS_GD_P (tls_type))
2471 {
2472 h->got.offset = s->size;
2473 s->size += 4;
2474 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2475 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2476 s->size += 4;
2477 }
ebe50bae 2478 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2479 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2480 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2481 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2482 need two), R_386_TLS_GD needs one if local symbol and two if
2483 global. */
2484 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2485 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2486 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2487 || (tls_type & GOT_TLS_IE))
6de2ae4a 2488 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2489 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2490 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2491 else if (! GOT_TLS_GDESC_P (tls_type)
2492 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2493 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2494 && (info->shared
2495 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2496 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2497 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2498 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2499 }
2500 else
51b64d56 2501 h->got.offset = (bfd_vma) -1;
6725bdbf 2502
5a15f56f 2503 if (eh->dyn_relocs == NULL)
b34976b6 2504 return TRUE;
5a15f56f 2505
0c715baa
AM		 2506 /* In the shared -Bsymbolic case, discard space allocated for
2507 dynamic pc-relative relocs against symbols which turn out to be
2508 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2509 space for pc-relative relocs that have become local due to symbol
2510 visibility changes. */
0c715baa
AM		 2511
2512 if (info->shared)
5a15f56f 2513 {
09695f56
AM		 2514 /* The only reloc that uses pc_count is R_386_PC32, which will
2515 appear on a call or on something like ".long foo - .". We
2516 want calls to protected symbols to resolve directly to the
2517 function rather than going via the plt. If people want
2518 function pointer comparisons to work as expected then they
2519 should avoid writing assembly like ".long foo - .". */
2520 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2521 {
e03a8ed8 2522 struct elf_dyn_relocs **pp;
0c715baa
AM		 2523
2524 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2525 {
c3ce498c
L		 2526 p->count -= p->pc_count;
2527 p->pc_count = 0;
0c715baa
AM		 2528 if (p->count == 0)
2529 *pp = p->next;
2530 else
2531 pp = &p->next;
2532 }
5a15f56f 2533 }
4e795f50 2534
23209a78 2535 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2536 {
e03a8ed8 2537 struct elf_dyn_relocs **pp;
3348747a
NS		 2538 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2539 {
2540 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2541 *pp = p->next;
2542 else
2543 pp = &p->next;
2544 }
2545 }
2546
4e795f50 2547 /* Also discard relocs on undefined weak syms with non-default
c353e543 2548 visibility. */
22d606e9 2549 if (eh->dyn_relocs != NULL
c353e543 2550 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2551 {
2552 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2553 eh->dyn_relocs = NULL;
2554
2555 /* Make sure undefined weak symbols are output as a dynamic
2556 symbol in PIEs. */
2557 else if (h->dynindx == -1
2558 && !h->forced_local)
2559 {
2560 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2561 return FALSE;
2562 }
2563 }
0c715baa 2564 }
a23b6845 2565 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2566 {
2567 /* For the non-shared case, discard space for relocs against
2568 symbols which turn out to need copy relocs or are not
2569 dynamic. */
2570
f5385ebf
AM		 2571 if (!h->non_got_ref
2572 && ((h->def_dynamic
2573 && !h->def_regular)
ebe50bae 2574 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2575 && (h->root.type == bfd_link_hash_undefweak
2576 || h->root.type == bfd_link_hash_undefined))))
2577 {
2578 /* Make sure this symbol is output as a dynamic symbol.
2579 Undefined weak syms won't yet be marked as dynamic. */
2580 if (h->dynindx == -1
f5385ebf 2581 && !h->forced_local)
0c715baa 2582 {
c152c796 2583 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2584 return FALSE;
0c715baa 2585 }
5a15f56f 2586
0c715baa
AM		 2587 /* If that succeeded, we know we'll be keeping all the
2588 relocs. */
2589 if (h->dynindx != -1)
2590 goto keep;
2591 }
2592
2593 eh->dyn_relocs = NULL;
2594
ec338859 2595 keep: ;
5a15f56f
AM		 2596 }
2597
0c715baa
AM		 2598 /* Finally, allocate space. */
2599 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2600 {
e7c33416
NC		 2601 asection *sreloc;
2602
cbe950e9 2603 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2604
2605 BFD_ASSERT (sreloc != NULL);
eea6121a 2606 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2607 }
2608
b34976b6 2609 return TRUE;
6725bdbf
AM		 2610}
2611
c25bc9fc
L		 2612/* Allocate space in .plt, .got and associated reloc sections for
2613 local dynamic relocs. */
2614
2615static bfd_boolean
2616elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2617{
2618 struct elf_link_hash_entry *h
2619 = (struct elf_link_hash_entry *) *slot;
2620
2621 if (h->type != STT_GNU_IFUNC
2622 || !h->def_regular
2623 || !h->ref_regular
2624 || !h->forced_local
2625 || h->root.type != bfd_link_hash_defined)
2626 abort ();
2627
2628 return elf_i386_allocate_dynrelocs (h, inf);
2629}
2630
0c715baa
AM		 2631/* Find any dynamic relocs that apply to read-only sections. */
2632
b34976b6 2633static bfd_boolean
eb4ff4d6 2634elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2635{
2636 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2637 struct elf_dyn_relocs *p;
0c715baa 2638
aa715242
L		 2639 /* Skip local IFUNC symbols. */
2640 if (h->forced_local && h->type == STT_GNU_IFUNC)
2641 return TRUE;
2642
0c715baa
AM		 2643 eh = (struct elf_i386_link_hash_entry *) h;
2644 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2645 {
2646 asection *s = p->sec->output_section;
2647
2648 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2649 {
2650 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2651
2652 info->flags |= DF_TEXTREL;
2653
1952c5cd
L		 2654 if ((info->warn_shared_textrel && info->shared)
2655 || info->error_textrel)
2656 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 2657 p->sec->owner, h->root.root.string,
2658 p->sec);
2659
0c715baa 2660 /* Not an error, just cut short the traversal. */
b34976b6 2661 return FALSE;
0c715baa
AM		 2662 }
2663 }
b34976b6 2664 return TRUE;
0c715baa
AM		 2665}
2666
daa67607
L		 2667/* Convert
2668 mov foo@GOT(%reg), %reg
2669 to
2670 lea foo@GOTOFF(%reg), %reg
2671 with the local symbol, foo. */
2672
2673static bfd_boolean
2674elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2675 struct bfd_link_info *link_info)
2676{
2677 Elf_Internal_Shdr *symtab_hdr;
2678 Elf_Internal_Rela *internal_relocs;
2679 Elf_Internal_Rela *irel, *irelend;
2680 bfd_byte *contents;
2681 struct elf_i386_link_hash_table *htab;
2682 bfd_boolean changed_contents;
2683 bfd_boolean changed_relocs;
2684 bfd_signed_vma *local_got_refcounts;
2685
2686 /* Don't even try to convert non-ELF outputs. */
2687 if (!is_elf_hash_table (link_info->hash))
2688 return FALSE;
2689
c1d11331 2690 /* Nothing to do if there is no need or no output. */
daa67607 2691 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
c1d11331 2692 || sec->need_convert_mov_to_lea == 0
c8831961 2693 || bfd_is_abs_section (sec->output_section))
daa67607
L		 2694 return TRUE;
2695
2696 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2697
2698 /* Load the relocations for this section. */
2699 internal_relocs = (_bfd_elf_link_read_relocs
2700 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2701 link_info->keep_memory));
2702 if (internal_relocs == NULL)
2703 return FALSE;
2704
2705 htab = elf_i386_hash_table (link_info);
2706 changed_contents = FALSE;
2707 changed_relocs = FALSE;
2708 local_got_refcounts = elf_local_got_refcounts (abfd);
2709
2710 /* Get the section contents. */
2711 if (elf_section_data (sec)->this_hdr.contents != NULL)
2712 contents = elf_section_data (sec)->this_hdr.contents;
2713 else
2714 {
2715 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2716 goto error_return;
2717 }
2718
2719 irelend = internal_relocs + sec->reloc_count;
2720 for (irel = internal_relocs; irel < irelend; irel++)
2721 {
2722 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2723 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2724 unsigned int indx;
2725 struct elf_link_hash_entry *h;
2726
2727 if (r_type != R_386_GOT32)
2728 continue;
2729
2730 /* Get the symbol referred to by the reloc. */
2731 if (r_symndx < symtab_hdr->sh_info)
2732 {
2733 Elf_Internal_Sym *isym;
2734
2735 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2736 abfd, r_symndx);
2737
2738 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2739 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
5697705a 2740 && irel->r_offset >= 2
4b71eec6 2741 && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
daa67607 2742 {
4b71eec6 2743 bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
daa67607
L		 2744 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2745 if (local_got_refcounts != NULL
2746 && local_got_refcounts[r_symndx] > 0)
2747 local_got_refcounts[r_symndx] -= 1;
2748 changed_contents = TRUE;
2749 changed_relocs = TRUE;
2750 }
2751 continue;
2752 }
2753
2754 indx = r_symndx - symtab_hdr->sh_info;
2755 h = elf_sym_hashes (abfd)[indx];
2756 BFD_ASSERT (h != NULL);
2757
2758 while (h->root.type == bfd_link_hash_indirect
2759 || h->root.type == bfd_link_hash_warning)
2760 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2761
3f65f599
L		 2762 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2763 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2764 if (h->def_regular
2765 && h->type != STT_GNU_IFUNC
9637f6ef 2766 && h != htab->elf.hdynamic
daa67607 2767 && SYMBOL_REFERENCES_LOCAL (link_info, h)
5697705a 2768 && irel->r_offset >= 2
4b71eec6 2769 && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
daa67607 2770 {
4b71eec6 2771 bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
daa67607
L		 2772 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2773 if (h->got.refcount > 0)
2774 h->got.refcount -= 1;
2775 changed_contents = TRUE;
2776 changed_relocs = TRUE;
2777 }
2778 }
2779
2780 if (contents != NULL
2781 && elf_section_data (sec)->this_hdr.contents != contents)
2782 {
2783 if (!changed_contents && !link_info->keep_memory)
2784 free (contents);
2785 else
2786 {
2787 /* Cache the section contents for elf_link_input_bfd. */
2788 elf_section_data (sec)->this_hdr.contents = contents;
2789 }
2790 }
2791
2792 if (elf_section_data (sec)->relocs != internal_relocs)
2793 {
2794 if (!changed_relocs)
2795 free (internal_relocs);
2796 else
2797 elf_section_data (sec)->relocs = internal_relocs;
2798 }
2799
2800 return TRUE;
2801
2802 error_return:
2803 if (contents != NULL
2804 && elf_section_data (sec)->this_hdr.contents != contents)
2805 free (contents);
2806 if (internal_relocs != NULL
2807 && elf_section_data (sec)->relocs != internal_relocs)
2808 free (internal_relocs);
2809 return FALSE;
2810}
2811
252b5132
RH		 2812/* Set the sizes of the dynamic sections. */
2813
b34976b6 2814static bfd_boolean
23209a78 2815elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2816{
6725bdbf 2817 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2818 bfd *dynobj;
2819 asection *s;
b34976b6 2820 bfd_boolean relocs;
0c715baa 2821 bfd *ibfd;
252b5132 2822
6725bdbf 2823 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2824 if (htab == NULL)
2825 return FALSE;
ebe50bae 2826 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2827 if (dynobj == NULL)
2828 abort ();
252b5132 2829
ebe50bae 2830 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2831 {
2832 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2833 if (info->executable)
252b5132 2834 {
3d4d4302 2835 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2836 if (s == NULL)
2837 abort ();
eea6121a 2838 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2839 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2840 }
161d71a6 2841 }
6725bdbf 2842
0c715baa
AM		 2843 /* Set up .got offsets for local syms, and space for local dynamic
2844 relocs. */
c72f2fb2 2845 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 2846 {
2847 bfd_signed_vma *local_got;
2848 bfd_signed_vma *end_local_got;
13ae64f3 2849 char *local_tls_type;
67a4f2b7 2850 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2851 bfd_size_type locsymcount;
2852 Elf_Internal_Shdr *symtab_hdr;
2853 asection *srel;
6725bdbf 2854
0ffa91dd 2855 if (! is_i386_elf (ibfd))
161d71a6 2856 continue;
6725bdbf 2857
0c715baa
AM		 2858 for (s = ibfd->sections; s != NULL; s = s->next)
2859 {
e03a8ed8 2860 struct elf_dyn_relocs *p;
0c715baa 2861
daa67607
L		 2862 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2863 return FALSE;
2864
e03a8ed8 2865 for (p = ((struct elf_dyn_relocs *)
e81d3500 2866 elf_section_data (s)->local_dynrel);
ec338859
AM		 2867 p != NULL;
2868 p = p->next)
0c715baa 2869 {
ec338859
AM		 2870 if (!bfd_is_abs_section (p->sec)
2871 && bfd_is_abs_section (p->sec->output_section))
2872 {
2873 /* Input section has been discarded, either because
2874 it is a copy of a linkonce section or due to
2875 linker script /DISCARD/, so we'll be discarding
2876 the relocs too. */
2877 }
23209a78 2878 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2879 && strcmp (p->sec->output_section->name,
2880 ".tls_vars") == 0)
2881 {
2882 /* Relocations in vxworks .tls_vars sections are
2883 handled specially by the loader. */
2884 }
248866a8 2885 else if (p->count != 0)
ec338859
AM		 2886 {
2887 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2888 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2889 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2890 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2891 {
2892 info->flags |= DF_TEXTREL;
1952c5cd
L		 2893 if ((info->warn_shared_textrel && info->shared)
2894 || info->error_textrel)
2895 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 2896 p->sec->owner, p->sec);
b70321a2 2897 }
ec338859 2898 }
0c715baa
AM		 2899 }
2900 }
2901
2902 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2903 if (!local_got)
2904 continue;
6725bdbf 2905
0ffa91dd 2906 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2907 locsymcount = symtab_hdr->sh_info;
2908 end_local_got = local_got + locsymcount;
13ae64f3 2909 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2910 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2911 s = htab->elf.sgot;
2912 srel = htab->elf.srelgot;
67a4f2b7
AO		 2913 for (; local_got < end_local_got;
2914 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2915 {
67a4f2b7 2916 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2917 if (*local_got > 0)
6725bdbf 2918 {
67a4f2b7
AO		 2919 if (GOT_TLS_GDESC_P (*local_tls_type))
2920 {
6de2ae4a 2921 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2922 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2923 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2924 *local_got = (bfd_vma) -2;
2925 }
2926 if (! GOT_TLS_GDESC_P (*local_tls_type)
2927 || GOT_TLS_GD_P (*local_tls_type))
2928 {
2929 *local_got = s->size;
2930 s->size += 4;
2931 if (GOT_TLS_GD_P (*local_tls_type)
2932 || *local_tls_type == GOT_TLS_IE_BOTH)
2933 s->size += 4;
2934 }
13ae64f3 2935 if (info->shared
67a4f2b7 2936 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2937 || (*local_tls_type & GOT_TLS_IE))
2938 {
2939 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2940 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2941 else if (GOT_TLS_GD_P (*local_tls_type)
2942 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2943 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2944 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2945 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2946 }
6725bdbf 2947 }
161d71a6
L		 2948 else
2949 *local_got = (bfd_vma) -1;
6725bdbf 2950 }
252b5132 2951 }
6725bdbf 2952
13ae64f3
JJ		 2953 if (htab->tls_ldm_got.refcount > 0)
2954 {
2955 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2956 relocs. */
6de2ae4a
L		 2957 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2958 htab->elf.sgot->size += 8;
2959 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2960 }
2961 else
2962 htab->tls_ldm_got.offset = -1;
2963
0c715baa
AM		 2964 /* Allocate global sym .plt and .got entries, and space for global
2965 sym dynamic relocs. */
eb4ff4d6 2966 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2967
c25bc9fc
L		 2968 /* Allocate .plt and .got entries, and space for local symbols. */
2969 htab_traverse (htab->loc_hash_table,
2970 elf_i386_allocate_local_dynrelocs,
2971 info);
2972
67a4f2b7
AO		 2973 /* For every jump slot reserved in the sgotplt, reloc_count is
2974 incremented. However, when we reserve space for TLS descriptors,
2975 it's not incremented, so in order to compute the space reserved
2976 for them, it suffices to multiply the reloc count by the jump
e1f98742 2977 slot size.
caa0075c 2978
e1f98742
L		 2979 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2980 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2981 if (htab->elf.srelplt)
e1f98742
L		 2982 {
2983 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2984 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2985 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2986 }
2987 else if (htab->elf.irelplt)
2988 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2989
67a4f2b7 2990
a7b16ceb
L		 2991 if (htab->elf.sgotplt)
2992 {
2993 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2994 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2995 if ((htab->elf.hgot == NULL
2996 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2997 && (htab->elf.sgotplt->size
2998 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2999 && (htab->elf.splt == NULL
3000 || htab->elf.splt->size == 0)
3001 && (htab->elf.sgot == NULL
3002 || htab->elf.sgot->size == 0)
3003 && (htab->elf.iplt == NULL
3004 || htab->elf.iplt->size == 0)
3005 && (htab->elf.igotplt == NULL
3006 || htab->elf.igotplt->size == 0))
3007 htab->elf.sgotplt->size = 0;
3008 }
3009
9a2a56cc
AM		 3010
3011 if (htab->plt_eh_frame != NULL
3012 && htab->elf.splt != NULL
3013 && htab->elf.splt->size != 0
3014 && !bfd_is_abs_section (htab->elf.splt->output_section)
3015 && _bfd_elf_eh_frame_present (info))
3016 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3017
5a15f56f
AM		 3018 /* We now have determined the sizes of the various dynamic sections.
3019 Allocate memory for them. */
b34976b6 3020 relocs = FALSE;
252b5132
RH		 3021 for (s = dynobj->sections; s != NULL; s = s->next)
3022 {
eac338cf
PB		 3023 bfd_boolean strip_section = TRUE;
3024
252b5132
RH		 3025 if ((s->flags & SEC_LINKER_CREATED) == 0)
3026 continue;
3027
6de2ae4a 3028 if (s == htab->elf.splt
9a2a56cc 3029 || s == htab->elf.sgot)
252b5132 3030 {
6725bdbf
AM		 3031 /* Strip this section if we don't need it; see the
3032 comment below. */
eac338cf
PB		 3033 /* We'd like to strip these sections if they aren't needed, but if
3034 we've exported dynamic symbols from them we must leave them.
3035 It's too late to tell BFD to get rid of the symbols. */
3036
7325306f 3037 if (htab->elf.hplt != NULL)
eac338cf 3038 strip_section = FALSE;
252b5132 3039 }
9a2a56cc
AM		 3040 else if (s == htab->elf.sgotplt
3041 || s == htab->elf.iplt
3042 || s == htab->elf.igotplt
dd7e64d4 3043 || s == htab->plt_got
9a2a56cc
AM		 3044 || s == htab->plt_eh_frame
3045 || s == htab->sdynbss)
3046 {
3047 /* Strip these too. */
3048 }
0112cd26 3049 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3050 {
6de2ae4a
L		 3051 if (s->size != 0
3052 && s != htab->elf.srelplt
3053 && s != htab->srelplt2)
b34976b6 3054 relocs = TRUE;
252b5132 3055
0ac8d2ca
AM		 3056 /* We use the reloc_count field as a counter if we need
3057 to copy relocs into the output file. */
5ae0bfb6 3058 s->reloc_count = 0;
252b5132 3059 }
6725bdbf 3060 else
252b5132
RH		 3061 {
3062 /* It's not one of our sections, so don't allocate space. */
3063 continue;
3064 }
3065
c456f082 3066 if (s->size == 0)
252b5132 3067 {
0ac8d2ca
AM		 3068 /* If we don't need this section, strip it from the
3069 output file. This is mostly to handle .rel.bss and
3070 .rel.plt. We must create both sections in
3071 create_dynamic_sections, because they must be created
3072 before the linker maps input sections to output
3073 sections. The linker does that before
3074 adjust_dynamic_symbol is called, and it is that
3075 function which decides whether anything needs to go
3076 into these sections. */
c456f082
AM		 3077 if (strip_section)
3078 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3079 continue;
3080 }
3081
c456f082
AM		 3082 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3083 continue;
3084
f69da49f
AM		 3085 /* Allocate memory for the section contents. We use bfd_zalloc
3086 here in case unused entries are not reclaimed before the
3087 section's contents are written out. This should not happen,
3088 but this way if it does, we get a R_386_NONE reloc instead
3089 of garbage. */
a50b1753 3090 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3091 if (s->contents == NULL)
b34976b6 3092 return FALSE;
252b5132
RH		 3093 }
3094
e41b3a13 3095 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3096 && htab->plt_eh_frame->contents != NULL)
3097 {
3098 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3099 sizeof (elf_i386_eh_frame_plt));
3100 bfd_put_32 (dynobj, htab->elf.splt->size,
3101 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3102 }
e41b3a13 3103
ebe50bae 3104 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3105 {
3106 /* Add some entries to the .dynamic section. We fill in the
3107 values later, in elf_i386_finish_dynamic_sections, but we
3108 must add the entries now so that we get the correct size for
3109 the .dynamic section. The DT_DEBUG entry is filled in by the
3110 dynamic linker and used by the debugger. */
dc810e39 3111#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3112 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3113
36af4a4e 3114 if (info->executable)
252b5132 3115 {
dc810e39 3116 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3117 return FALSE;
252b5132
RH		 3118 }
3119
6de2ae4a 3120 if (htab->elf.splt->size != 0)
252b5132 3121 {
7c1e8d3e
L		 3122 /* DT_PLTGOT is used by prelink even if there is no PLT
3123 relocation. */
3124 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3125 return FALSE;
7c1e8d3e
L		 3126
3127 if (htab->elf.srelplt->size != 0)
3128 {
3129 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3130 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3131 || !add_dynamic_entry (DT_JMPREL, 0))
3132 return FALSE;
3133 }
252b5132
RH		 3134 }
3135
3136 if (relocs)
3137 {
dc810e39
AM		 3138 if (!add_dynamic_entry (DT_REL, 0)
3139 || !add_dynamic_entry (DT_RELSZ, 0)
3140 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3141 return FALSE;
252b5132 3142
0c715baa
AM		 3143 /* If any dynamic relocs apply to a read-only section,
3144 then we need a DT_TEXTREL entry. */
248866a8 3145 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3146 elf_link_hash_traverse (&htab->elf,
3147 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3148
3149 if ((info->flags & DF_TEXTREL) != 0)
3150 {
3151 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3152 return FALSE;
0c715baa 3153 }
252b5132 3154 }
23209a78 3155 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3156 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3157 return FALSE;
252b5132 3158 }
dc810e39 3159#undef add_dynamic_entry
252b5132 3160
b34976b6 3161 return TRUE;
252b5132
RH		 3162}
3163
67a4f2b7
AO		 3164static bfd_boolean
3165elf_i386_always_size_sections (bfd *output_bfd,
3166 struct bfd_link_info *info)
3167{
3168 asection *tls_sec = elf_hash_table (info)->tls_sec;
3169
3170 if (tls_sec)
3171 {
3172 struct elf_link_hash_entry *tlsbase;
3173
3174 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3175 "_TLS_MODULE_BASE_",
3176 FALSE, FALSE, FALSE);
3177
3178 if (tlsbase && tlsbase->type == STT_TLS)
3179 {
4dfe6ac6 3180 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3181 struct bfd_link_hash_entry *bh = NULL;
3182 const struct elf_backend_data *bed
3183 = get_elf_backend_data (output_bfd);
3184
4dfe6ac6
NC		 3185 htab = elf_i386_hash_table (info);
3186 if (htab == NULL)
3187 return FALSE;
3188
67a4f2b7
AO		 3189 if (!(_bfd_generic_link_add_one_symbol
3190 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3191 tls_sec, 0, NULL, FALSE,
3192 bed->collect, &bh)))
3193 return FALSE;
9f03412a 3194
4dfe6ac6 3195 htab->tls_module_base = bh;
9f03412a 3196
67a4f2b7
AO		 3197 tlsbase = (struct elf_link_hash_entry *)bh;
3198 tlsbase->def_regular = 1;
3199 tlsbase->other = STV_HIDDEN;
576fa883 3200 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3201 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3202 }
3203 }
3204
3205 return TRUE;
3206}
3207
38701953
AM		 3208/* Set the correct type for an x86 ELF section. We do this by the
3209 section name, which is a hack, but ought to work. */
3210
b34976b6 3211static bfd_boolean
55fd94b0
AM		 3212elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3213 Elf_Internal_Shdr *hdr,
3214 asection *sec)
38701953 3215{
91d6fa6a 3216 const char *name;
38701953
AM		 3217
3218 name = bfd_get_section_name (abfd, sec);
3219
3220 /* This is an ugly, but unfortunately necessary hack that is
3221 needed when producing EFI binaries on x86. It tells
3222 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3223 containing ELF relocation info. We need this hack in order to
3224 be able to generate ELF binaries that can be translated into
3225 EFI applications (which are essentially COFF objects). Those
3226 files contain a COFF ".reloc" section inside an ELFNN object,
3227 which would normally cause BFD to segfault because it would
3228 attempt to interpret this section as containing relocation
3229 entries for section "oc". With this hack enabled, ".reloc"
3230 will be treated as a normal data section, which will avoid the
3231 segfault. However, you won't be able to create an ELFNN binary
3232 with a section named "oc" that needs relocations, but that's
3233 the kind of ugly side-effects you get when detecting section
3234 types based on their names... In practice, this limitation is
3235 unlikely to bite. */
3236 if (strcmp (name, ".reloc") == 0)
3237 hdr->sh_type = SHT_PROGBITS;
3238
b34976b6 3239 return TRUE;
38701953
AM		 3240}
3241
9f03412a
AO		 3242/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3243 executables. Rather than setting it to the beginning of the TLS
3244 section, we have to set it to the end. This function may be called
3245 multiple times, it is idempotent. */
3246
3247static void
eb4ff4d6 3248elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3249{
4dfe6ac6 3250 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3251 struct bfd_link_hash_entry *base;
3252
3253 if (!info->executable)
3254 return;
3255
4dfe6ac6
NC		 3256 htab = elf_i386_hash_table (info);
3257 if (htab == NULL)
3258 return;
9f03412a 3259
4dfe6ac6
NC		 3260 base = htab->tls_module_base;
3261 if (base == NULL)
9f03412a
AO		 3262 return;
3263
4dfe6ac6 3264 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3265}
3266
13ae64f3
JJ		 3267/* Return the base VMA address which should be subtracted from real addresses
3268 when resolving @dtpoff relocation.
3269 This is PT_TLS segment p_vaddr. */
3270
3271static bfd_vma
eb4ff4d6 3272elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3273{
e1918d23
AM		 3274 /* If tls_sec is NULL, we should have signalled an error already. */
3275 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3276 return 0;
e1918d23 3277 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3278}
3279
3280/* Return the relocation value for @tpoff relocation
3281 if STT_TLS virtual address is ADDRESS. */
3282
3283static bfd_vma
eb4ff4d6 3284elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3285{
e1918d23 3286 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3287 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3288 bfd_vma static_tls_size;
13ae64f3 3289
e1918d23
AM		 3290 /* If tls_sec is NULL, we should have signalled an error already. */
3291 if (htab->tls_sec == NULL)
6a30718d 3292 return 0;
7dc98aea
RO		 3293
3294 /* Consider special static TLS alignment requirements. */
3295 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3296 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3297}
3298
252b5132
RH		 3299/* Relocate an i386 ELF section. */
3300
b34976b6 3301static bfd_boolean
55fd94b0
AM		 3302elf_i386_relocate_section (bfd *output_bfd,
3303 struct bfd_link_info *info,
3304 bfd *input_bfd,
3305 asection *input_section,
3306 bfd_byte *contents,
3307 Elf_Internal_Rela *relocs,
3308 Elf_Internal_Sym *local_syms,
3309 asection **local_sections)
252b5132 3310{
6725bdbf 3311 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3312 Elf_Internal_Shdr *symtab_hdr;
3313 struct elf_link_hash_entry **sym_hashes;
3314 bfd_vma *local_got_offsets;
67a4f2b7 3315 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3316 Elf_Internal_Rela *rel;
3317 Elf_Internal_Rela *relend;
3348747a 3318 bfd_boolean is_vxworks_tls;
25e762b9 3319 unsigned plt_entry_size;
252b5132 3320
0ffa91dd 3321 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3322
6725bdbf 3323 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3324 if (htab == NULL)
3325 return FALSE;
0ffa91dd 3326 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3327 sym_hashes = elf_sym_hashes (input_bfd);
3328 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3329 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3330 /* We have to handle relocations in vxworks .tls_vars sections
3331 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3332 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3333 && info->shared
3348747a
NS		 3334 && !strcmp (input_section->output_section->name,
3335 ".tls_vars"));
252b5132 3336
eb4ff4d6 3337 elf_i386_set_tls_module_base (info);
9f03412a 3338
25e762b9
RM		 3339 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3340
252b5132
RH		 3341 rel = relocs;
3342 relend = relocs + input_section->reloc_count;
3343 for (; rel < relend; rel++)
3344 {
13ae64f3 3345 unsigned int r_type;
252b5132
RH		 3346 reloc_howto_type *howto;
3347 unsigned long r_symndx;
3348 struct elf_link_hash_entry *h;
dd7e64d4 3349 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3350 Elf_Internal_Sym *sym;
3351 asection *sec;
dd7e64d4 3352 bfd_vma off, offplt, plt_offset;
252b5132 3353 bfd_vma relocation;
b34976b6 3354 bfd_boolean unresolved_reloc;
252b5132 3355 bfd_reloc_status_type r;
1b452ec6 3356 unsigned int indx;
13ae64f3 3357 int tls_type;
1788fc08 3358 bfd_vma st_size;
dd7e64d4 3359 asection *resolved_plt;
252b5132
RH		 3360
3361 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3362 if (r_type == R_386_GNU_VTINHERIT
3363 || r_type == R_386_GNU_VTENTRY)
252b5132 3364 continue;
dc47f327 3365
55fd94b0 3366 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3367 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3368 >= R_386_ext - R_386_standard)
3369 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3370 >= R_386_irelative - R_386_ext))
252b5132 3371 {
6ba842b6 3372 (*_bfd_error_handler)
d003868e
AM		 3373 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3374 input_bfd, input_section, r_type);
252b5132 3375 bfd_set_error (bfd_error_bad_value);
b34976b6 3376 return FALSE;
252b5132 3377 }
1b452ec6 3378 howto = elf_howto_table + indx;
252b5132
RH		 3379
3380 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3381 h = NULL;
3382 sym = NULL;
3383 sec = NULL;
b34976b6 3384 unresolved_reloc = FALSE;
252b5132
RH		 3385 if (r_symndx < symtab_hdr->sh_info)
3386 {
3387 sym = local_syms + r_symndx;
3388 sec = local_sections[r_symndx];
3389 relocation = (sec->output_section->vma
3390 + sec->output_offset
3391 + sym->st_value);
1788fc08 3392 st_size = sym->st_size;
ab96bf03
AM		 3393
3394 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3395 && ((sec->flags & SEC_MERGE) != 0
3396 || (info->relocatable
3397 && sec->output_offset != 0)))
f8df10f4 3398 {
f8df10f4 3399 bfd_vma addend;
4a335f3d 3400 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3401
4a335f3d 3402 switch (howto->size)
f8df10f4 3403 {
4a335f3d
AM		 3404 case 0:
3405 addend = bfd_get_8 (input_bfd, where);
3406 if (howto->pc_relative)
3407 {
3408 addend = (addend ^ 0x80) - 0x80;
3409 addend += 1;
3410 }
3411 break;
3412 case 1:
3413 addend = bfd_get_16 (input_bfd, where);
3414 if (howto->pc_relative)
3415 {
3416 addend = (addend ^ 0x8000) - 0x8000;
3417 addend += 2;
3418 }
3419 break;
3420 case 2:
3421 addend = bfd_get_32 (input_bfd, where);
3422 if (howto->pc_relative)
3423 {
3424 addend = (addend ^ 0x80000000) - 0x80000000;
3425 addend += 4;
3426 }
3427 break;
3428 default:
3429 abort ();
f8df10f4
JJ		 3430 }
3431
ab96bf03
AM		 3432 if (info->relocatable)
3433 addend += sec->output_offset;
3434 else
3435 {
3436 asection *msec = sec;
3437 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3438 addend);
3439 addend -= relocation;
3440 addend += msec->output_section->vma + msec->output_offset;
3441 }
4a335f3d
AM		 3442
3443 switch (howto->size)
3444 {
3445 case 0:
16a10388 3446 /* FIXME: overflow checks. */
4a335f3d
AM		 3447 if (howto->pc_relative)
3448 addend -= 1;
3449 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3450 break;
3451 case 1:
3452 if (howto->pc_relative)
3453 addend -= 2;
3454 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3455 break;
3456 case 2:
3457 if (howto->pc_relative)
3458 addend -= 4;
3459 bfd_put_32 (input_bfd, addend, where);
3460 break;
3461 }
f8df10f4 3462 }
1f85278f
L		 3463 else if (!info->relocatable
3464 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3465 {
3466 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3467 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3468 FALSE);
c25bc9fc
L		 3469 if (h == NULL)
3470 abort ();
3471
23209a78 3472 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3473 h->root.u.def.value = sym->st_value;
3474 h->root.u.def.section = sec;
3475 }
252b5132
RH		 3476 }
3477 else
3478 {
3d540e93 3479 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3480 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3481
b2a8e766
AM		 3482 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3483 r_symndx, symtab_hdr, sym_hashes,
3484 h, sec, relocation,
62d887d4 3485 unresolved_reloc, warned, ignored);
1788fc08 3486 st_size = h->size;
252b5132
RH		 3487 }
3488
dbaa2011 3489 if (sec != NULL && discarded_section (sec))
0672748a 3490 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3491 rel, 1, relend, howto, 0, contents);
9635fe29 3492
ab96bf03
AM		 3493 if (info->relocatable)
3494 continue;
3495
cbe950e9
L		 3496 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3497 it here if it is defined in a non-shared object. */
3498 if (h != NULL
3499 && h->type == STT_GNU_IFUNC
3500 && h->def_regular)
3501 {
3502 asection *plt, *gotplt, *base_got;
3503 bfd_vma plt_index;
4c544807 3504 const char *name;
cbe950e9 3505
97dc35c8
L		 3506 if ((input_section->flags & SEC_ALLOC) == 0)
3507 {
3508 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3509 sections because such sections are not SEC_ALLOC and
3510 thus ld.so will not process them. */
3511 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3512 continue;
97dc35c8
L		 3513 abort ();
3514 }
3515 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L		 3516 abort ();
3517
3518 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3519 if (htab->elf.splt != NULL)
cbe950e9 3520 {
6de2ae4a
L		 3521 plt = htab->elf.splt;
3522 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3523 }
3524 else
3525 {
6de2ae4a
L		 3526 plt = htab->elf.iplt;
3527 gotplt = htab->elf.igotplt;
cbe950e9
L		 3528 }
3529
3530 relocation = (plt->output_section->vma
3531 + plt->output_offset + h->plt.offset);
3532
3533 switch (r_type)
3534 {
3535 default:
4c544807
L		 3536 if (h->root.root.string)
3537 name = h->root.root.string;
3538 else
3539 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3540 NULL);
cbe950e9
L		 3541 (*_bfd_error_handler)
3542 (_("%B: relocation %s against STT_GNU_IFUNC "
3543 "symbol `%s' isn't handled by %s"), input_bfd,
3544 elf_howto_table[r_type].name,
4c544807 3545 name, __FUNCTION__);
cbe950e9
L		 3546 bfd_set_error (bfd_error_bad_value);
3547 return FALSE;
3548
3549 case R_386_32:
710ab287 3550 /* Generate dynamic relcoation only when there is a
c293fa49 3551 non-GOT reference in a shared object. */
710ab287
L		 3552 if (info->shared && h->non_got_ref)
3553 {
3554 Elf_Internal_Rela outrel;
710ab287
L		 3555 asection *sreloc;
3556 bfd_vma offset;
3557
c25bc9fc
L		 3558 /* Need a dynamic relocation to get the real function
3559 adddress. */
710ab287
L		 3560 offset = _bfd_elf_section_offset (output_bfd,
3561 info,
3562 input_section,
3563 rel->r_offset);
3564 if (offset == (bfd_vma) -1
3565 || offset == (bfd_vma) -2)
3566 abort ();
3567
3568 outrel.r_offset = (input_section->output_section->vma
3569 + input_section->output_offset
3570 + offset);
3571
3572 if (h->dynindx == -1
44c4ea11
L		 3573 || h->forced_local
3574 || info->executable)
710ab287
L		 3575 {
3576 /* This symbol is resolved locally. */
56b8aada
L		 3577 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3578 bfd_put_32 (output_bfd,
3579 (h->root.u.def.value
3580 + h->root.u.def.section->output_section->vma
3581 + h->root.u.def.section->output_offset),
3582 contents + offset);
710ab287
L		 3583 }
3584 else
56b8aada 3585 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3586
6de2ae4a 3587 sreloc = htab->elf.irelifunc;
59d6ffb2 3588 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3589
3590 /* If this reloc is against an external symbol, we
3591 do not want to fiddle with the addend. Otherwise,
3592 we need to include the symbol value so that it
3593 becomes an addend for the dynamic reloc. For an
3594 internal symbol, we have updated addend. */
56b8aada 3595 continue;
710ab287 3596 }
d59a60e9 3597 /* FALLTHROUGH */
cbe950e9
L		 3598 case R_386_PC32:
3599 case R_386_PLT32:
3600 goto do_relocation;
3601
3602 case R_386_GOT32:
6de2ae4a 3603 base_got = htab->elf.sgot;
cbe950e9
L		 3604 off = h->got.offset;
3605
7afd84dc 3606 if (base_got == NULL)
cbe950e9
L		 3607 abort ();
3608
7afd84dc 3609 if (off == (bfd_vma) -1)
cbe950e9 3610 {
7afd84dc
L		 3611 /* We can't use h->got.offset here to save state, or
3612 even just remember the offset, as finish_dynamic_symbol
3613 would use that as offset into .got. */
6bbec505 3614
6de2ae4a 3615 if (htab->elf.splt != NULL)
7afd84dc 3616 {
25e762b9 3617 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3618 off = (plt_index + 3) * 4;
6de2ae4a 3619 base_got = htab->elf.sgotplt;
7afd84dc 3620 }
cbe950e9
L		 3621 else
3622 {
25e762b9 3623 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3624 off = plt_index * 4;
6de2ae4a 3625 base_got = htab->elf.igotplt;
7afd84dc
L		 3626 }
3627
3628 if (h->dynindx == -1
3629 || h->forced_local
3630 || info->symbolic)
3631 {
3632 /* This references the local defitionion. We must
3633 initialize this entry in the global offset table.
3634 Since the offset must always be a multiple of 8,
3635 we use the least significant bit to record
3636 whether we have initialized it already.
3637
3638 When doing a dynamic link, we create a .rela.got
3639 relocation entry to initialize the value. This
3640 is done in the finish_dynamic_symbol routine. */
3641 if ((off & 1) != 0)
3642 off &= ~1;
3643 else
3644 {
3645 bfd_put_32 (output_bfd, relocation,
3646 base_got->contents + off);
3647 h->got.offset |= 1;
3648 }
cbe950e9 3649 }
cbe950e9 3650
7afd84dc 3651 relocation = off;
cbe950e9 3652
7afd84dc 3653 /* Adjust for static executables. */
6de2ae4a 3654 if (htab->elf.splt == NULL)
7afd84dc
L		 3655 relocation += gotplt->output_offset;
3656 }
3657 else
0018b0a3
L		 3658 {
3659 relocation = (base_got->output_section->vma
3660 + base_got->output_offset + off
3661 - gotplt->output_section->vma
3662 - gotplt->output_offset);
3663 /* Adjust for static executables. */
6de2ae4a 3664 if (htab->elf.splt == NULL)
0018b0a3
L		 3665 relocation += gotplt->output_offset;
3666 }
3667
cbe950e9
L		 3668 goto do_relocation;
3669
3670 case R_386_GOTOFF:
3671 relocation -= (gotplt->output_section->vma
3672 + gotplt->output_offset);
3673 goto do_relocation;
3674 }
3675 }
3676
252b5132
RH		 3677 switch (r_type)
3678 {
3679 case R_386_GOT32:
3680 /* Relocation is to the entry for this symbol in the global
3681 offset table. */
6de2ae4a 3682 if (htab->elf.sgot == NULL)
ffb2e45b 3683 abort ();
252b5132
RH		 3684
3685 if (h != NULL)
3686 {
b34976b6 3687 bfd_boolean dyn;
252b5132
RH		 3688
3689 off = h->got.offset;
ebe50bae 3690 dyn = htab->elf.dynamic_sections_created;
26e41594 3691 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3692 || (info->shared
586119b3 3693 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3694 || (ELF_ST_VISIBILITY (h->other)
3695 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3696 {
3697 /* This is actually a static link, or it is a
3698 -Bsymbolic link and the symbol is defined
3699 locally, or the symbol was forced to be local
3700 because of a version file. We must initialize
3701 this entry in the global offset table. Since the
3702 offset must always be a multiple of 4, we use the
3703 least significant bit to record whether we have
3704 initialized it already.
3705
3706 When doing a dynamic link, we create a .rel.got
3707 relocation entry to initialize the value. This
3708 is done in the finish_dynamic_symbol routine. */
3709 if ((off & 1) != 0)
3710 off &= ~1;
3711 else
3712 {
3713 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3714 htab->elf.sgot->contents + off);
252b5132
RH		 3715 h->got.offset |= 1;
3716 }
3717 }
8c694914 3718 else
b34976b6 3719 unresolved_reloc = FALSE;
252b5132
RH		 3720 }
3721 else
3722 {
ffb2e45b
AM		 3723 if (local_got_offsets == NULL)
3724 abort ();
252b5132
RH		 3725
3726 off = local_got_offsets[r_symndx];
3727
3728 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3729 the least significant bit to record whether we have
3730 already generated the necessary reloc. */
252b5132
RH		 3731 if ((off & 1) != 0)
3732 off &= ~1;
3733 else
3734 {
6725bdbf 3735 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3736 htab->elf.sgot->contents + off);
252b5132
RH		 3737
3738 if (info->shared)
3739 {
947216bf
AM		 3740 asection *s;
3741 Elf_Internal_Rela outrel;
252b5132 3742
6de2ae4a 3743 s = htab->elf.srelgot;
947216bf 3744 if (s == NULL)
ffb2e45b 3745 abort ();
252b5132 3746
6de2ae4a
L		 3747 outrel.r_offset = (htab->elf.sgot->output_section->vma
3748 + htab->elf.sgot->output_offset
252b5132
RH		 3749 + off);
3750 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3751 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3752 }
3753
3754 local_got_offsets[r_symndx] |= 1;
3755 }
252b5132
RH		 3756 }
3757
ffb2e45b
AM		 3758 if (off >= (bfd_vma) -2)
3759 abort ();
3760
6de2ae4a
L		 3761 relocation = htab->elf.sgot->output_section->vma
3762 + htab->elf.sgot->output_offset + off
3763 - htab->elf.sgotplt->output_section->vma
3764 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3765 break;
3766
3767 case R_386_GOTOFF:
3768 /* Relocation is relative to the start of the global offset
3769 table. */
3770
3d949995
L		 3771 /* Check to make sure it isn't a protected function or data
3772 symbol for shared library since it may not be local when
3773 used as function address or with copy relocation. We also
e3c0e327 3774 need to make sure that a symbol is referenced locally. */
d5597ebc 3775 if (!info->executable && h)
90f487df 3776 {
41bed6dd
L		 3777 if (!h->def_regular)
3778 {
3779 const char *v;
3780
3781 switch (ELF_ST_VISIBILITY (h->other))
3782 {
3783 case STV_HIDDEN:
3784 v = _("hidden symbol");
3785 break;
3786 case STV_INTERNAL:
3787 v = _("internal symbol");
3788 break;
3789 case STV_PROTECTED:
3790 v = _("protected symbol");
3791 break;
3792 default:
3793 v = _("symbol");
3794 break;
3795 }
3796
3797 (*_bfd_error_handler)
3798 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3799 input_bfd, v, h->root.root.string);
3800 bfd_set_error (bfd_error_bad_value);
3801 return FALSE;
3802 }
d5597ebc 3803 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 3804 && (h->type == STT_FUNC
3805 || h->type == STT_OBJECT)
41bed6dd
L		 3806 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3807 {
3808 (*_bfd_error_handler)
3d949995
L		 3809 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
3810 input_bfd,
3811 h->type == STT_FUNC ? "function" : "data",
3812 h->root.root.string);
41bed6dd
L		 3813 bfd_set_error (bfd_error_bad_value);
3814 return FALSE;
3815 }
90f487df
L		 3816 }
3817
8c37241b
JJ		 3818 /* Note that sgot is not involved in this
3819 calculation. We always want the start of .got.plt. If we
3820 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3821 permitted by the ABI, we might have to change this
3822 calculation. */
6de2ae4a
L		 3823 relocation -= htab->elf.sgotplt->output_section->vma
3824 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3825 break;
3826
3827 case R_386_GOTPC:
3828 /* Use global offset table as symbol value. */
6de2ae4a
L		 3829 relocation = htab->elf.sgotplt->output_section->vma
3830 + htab->elf.sgotplt->output_offset;
b34976b6 3831 unresolved_reloc = FALSE;
252b5132
RH		 3832 break;
3833
3834 case R_386_PLT32:
3835 /* Relocation is to the entry for this symbol in the
3836 procedure linkage table. */
3837
dd5724d5 3838 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3839 without using the procedure linkage table. */
252b5132
RH		 3840 if (h == NULL)
3841 break;
3842
dd7e64d4
L		 3843 eh = (struct elf_i386_link_hash_entry *) h;
3844 if ((h->plt.offset == (bfd_vma) -1
3845 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3846 || htab->elf.splt == NULL)
252b5132
RH		 3847 {
3848 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3849 happens when statically linking PIC code, or when
3850 using -Bsymbolic. */
252b5132
RH		 3851 break;
3852 }
3853
dd7e64d4
L		 3854 if (h->plt.offset != (bfd_vma) -1)
3855 {
3856 resolved_plt = htab->elf.splt;
3857 plt_offset = h->plt.offset;
3858 }
3859 else
3860 {
3861 resolved_plt = htab->plt_got;
3862 plt_offset = eh->plt_got.offset;
3863 }
3864
3865 relocation = (resolved_plt->output_section->vma
3866 + resolved_plt->output_offset
3867 + plt_offset);
b34976b6 3868 unresolved_reloc = FALSE;
252b5132
RH		 3869 break;
3870
1788fc08 3871 case R_386_SIZE32:
1788fc08
L		 3872 /* Set to symbol size. */
3873 relocation = st_size;
3874 /* Fall through. */
3875
252b5132
RH		 3876 case R_386_32:
3877 case R_386_PC32:
3348747a
NS		 3878 if ((input_section->flags & SEC_ALLOC) == 0
3879 || is_vxworks_tls)
ec338859
AM		 3880 break;
3881
12d0ee4a 3882 if ((info->shared
ef5aade5
L		 3883 && (h == NULL
3884 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3885 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3886 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3887 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3888 || (ELIMINATE_COPY_RELOCS
3889 && !info->shared
12d0ee4a
AM		 3890 && h != NULL
3891 && h->dynindx != -1
f5385ebf
AM		 3892 && !h->non_got_ref
3893 && ((h->def_dynamic
3894 && !h->def_regular)
28d0b90e 3895 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3896 || h->root.type == bfd_link_hash_undefined)))
252b5132 3897 {
947216bf 3898 Elf_Internal_Rela outrel;
b34976b6 3899 bfd_boolean skip, relocate;
0c715baa 3900 asection *sreloc;
252b5132
RH		 3901
3902 /* When generating a shared object, these relocations
3903 are copied into the output file to be resolved at run
3904 time. */
3905
b34976b6
AM		 3906 skip = FALSE;
3907 relocate = FALSE;
252b5132 3908
c629eae0
JJ		 3909 outrel.r_offset =
3910 _bfd_elf_section_offset (output_bfd, info, input_section,
3911 rel->r_offset);
3912 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3913 skip = TRUE;
0bb2d96a 3914 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3915 skip = TRUE, relocate = TRUE;
252b5132
RH		 3916 outrel.r_offset += (input_section->output_section->vma
3917 + input_section->output_offset);
3918
3919 if (skip)
0bb2d96a 3920 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3921 else if (h != NULL
3922 && h->dynindx != -1
3923 && (r_type == R_386_PC32
3924 || !info->shared
55255dae 3925 || !SYMBOLIC_BIND (info, h)
f5385ebf 3926 || !h->def_regular))
0bb2d96a 3927 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3928 else
3929 {
5a15f56f 3930 /* This symbol is local, or marked to become local. */
b34976b6 3931 relocate = TRUE;
5a15f56f 3932 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3933 }
3934
cbe950e9 3935 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3936
62d78908
L		 3937 if (sreloc == NULL || sreloc->contents == NULL)
3938 {
3939 r = bfd_reloc_notsupported;
3940 goto check_relocation_error;
3941 }
0c715baa 3942
59d6ffb2 3943 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3944
3945 /* If this reloc is against an external symbol, we do
3946 not want to fiddle with the addend. Otherwise, we
3947 need to include the symbol value so that it becomes
3948 an addend for the dynamic reloc. */
0f88be7a 3949 if (! relocate)
252b5132
RH		 3950 continue;
3951 }
252b5132
RH		 3952 break;
3953
37e55690 3954 case R_386_TLS_IE:
1d85728f 3955 if (!info->executable)
37e55690 3956 {
947216bf 3957 Elf_Internal_Rela outrel;
37e55690 3958 asection *sreloc;
37e55690
JJ		 3959
3960 outrel.r_offset = rel->r_offset
3961 + input_section->output_section->vma
3962 + input_section->output_offset;
3963 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3964 sreloc = elf_section_data (input_section)->sreloc;
3965 if (sreloc == NULL)
3966 abort ();
59d6ffb2 3967 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3968 }
3969 /* Fall through */
3970
13ae64f3 3971 case R_386_TLS_GD:
67a4f2b7
AO		 3972 case R_386_TLS_GOTDESC:
3973 case R_386_TLS_DESC_CALL:
13ae64f3 3974 case R_386_TLS_IE_32:
37e55690 3975 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3976 tls_type = GOT_UNKNOWN;
3977 if (h == NULL && local_got_offsets)
3978 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3979 else if (h != NULL)
142411ca 3980 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3981 if (tls_type == GOT_TLS_IE)
3982 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3983
3984 if (! elf_i386_tls_transition (info, input_bfd,
3985 input_section, contents,
3986 symtab_hdr, sym_hashes,
3987 &r_type, tls_type, rel,
4c544807 3988 relend, h, r_symndx))
142411ca 3989 return FALSE;
13ae64f3
JJ		 3990
3991 if (r_type == R_386_TLS_LE_32)
3992 {
82e51918 3993 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3994 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3995 {
142411ca 3996 unsigned int type;
13ae64f3
JJ		 3997 bfd_vma roff;
3998
3999 /* GD->LE transition. */
13ae64f3 4000 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4001 if (type == 0x04)
4002 {
4003 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4004 Change it into:
4005 movl %gs:0, %eax; subl $foo@tpoff, %eax
4006 (6 byte form of subl). */
13ae64f3
JJ		 4007 memcpy (contents + rel->r_offset - 3,
4008 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 4009 roff = rel->r_offset + 5;
13ae64f3
JJ		 4010 }
4011 else
4012 {
142411ca
L		 4013 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4014 Change it into:
4015 movl %gs:0, %eax; subl $foo@tpoff, %eax
4016 (6 byte form of subl). */
4017 memcpy (contents + rel->r_offset - 2,
4018 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
4019 roff = rel->r_offset + 6;
13ae64f3 4020 }
eb4ff4d6 4021 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4022 contents + roff);
a3fadc9a 4023 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4024 rel++;
4025 continue;
4026 }
67a4f2b7
AO		 4027 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4028 {
4029 /* GDesc -> LE transition.
4030 It's originally something like:
4031 leal x@tlsdesc(%ebx), %eax
4032
4033 leal x@ntpoff, %eax
4034
4035 Registers other than %eax may be set up here. */
4036
142411ca 4037 unsigned int val;
67a4f2b7
AO		 4038 bfd_vma roff;
4039
67a4f2b7 4040 roff = rel->r_offset;
67a4f2b7 4041 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4042
4043 /* Now modify the instruction as appropriate. */
4044 /* aoliva FIXME: remove the above and xor the byte
4045 below with 0x86. */
4046 bfd_put_8 (output_bfd, val ^ 0x86,
4047 contents + roff - 1);
eb4ff4d6 4048 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4049 contents + roff);
4050 continue;
4051 }
4052 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4053 {
4054 /* GDesc -> LE transition.
4055 It's originally:
4056 call *(%eax)
4057 Turn it into:
142411ca 4058 xchg %ax,%ax */
67a4f2b7 4059
67a4f2b7 4060 bfd_vma roff;
6bbec505 4061
67a4f2b7 4062 roff = rel->r_offset;
10efb593 4063 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4064 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4065 continue;
4066 }
37e55690 4067 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4068 {
142411ca 4069 unsigned int val;
13ae64f3
JJ		 4070
4071 /* IE->LE transition:
37e55690
JJ		 4072 Originally it can be one of:
4073 movl foo, %eax
4074 movl foo, %reg
4075 addl foo, %reg
4076 We change it into:
4077 movl $foo, %eax
4078 movl $foo, %reg
4079 addl $foo, %reg. */
37e55690 4080 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4081 if (val == 0xa1)
4082 {
4083 /* movl foo, %eax. */
55fd94b0
AM		 4084 bfd_put_8 (output_bfd, 0xb8,
4085 contents + rel->r_offset - 1);
37e55690 4086 }
299bf759 4087 else
37e55690 4088 {
142411ca
L		 4089 unsigned int type;
4090
55fd94b0
AM		 4091 type = bfd_get_8 (input_bfd,
4092 contents + rel->r_offset - 2);
299bf759 4093 switch (type)
26e41594 4094 {
299bf759
L		 4095 case 0x8b:
4096 /* movl */
299bf759
L		 4097 bfd_put_8 (output_bfd, 0xc7,
4098 contents + rel->r_offset - 2);
4099 bfd_put_8 (output_bfd,
4100 0xc0 | ((val >> 3) & 7),
4101 contents + rel->r_offset - 1);
4102 break;
4103 case 0x03:
4104 /* addl */
299bf759
L		 4105 bfd_put_8 (output_bfd, 0x81,
4106 contents + rel->r_offset - 2);
4107 bfd_put_8 (output_bfd,
4108 0xc0 | ((val >> 3) & 7),
4109 contents + rel->r_offset - 1);
4110 break;
4111 default:
4112 BFD_FAIL ();
4113 break;
26e41594 4114 }
37e55690 4115 }
eb4ff4d6 4116 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4117 contents + rel->r_offset);
4118 continue;
4119 }
4120 else
4121 {
4122 unsigned int val, type;
4123
4124 /* {IE_32,GOTIE}->LE transition:
4125 Originally it can be one of:
13ae64f3 4126 subl foo(%reg1), %reg2
13ae64f3 4127 movl foo(%reg1), %reg2
37e55690 4128 addl foo(%reg1), %reg2
13ae64f3
JJ		 4129 We change it into:
4130 subl $foo, %reg2
37e55690
JJ		 4131 movl $foo, %reg2 (6 byte form)
4132 addl $foo, %reg2. */
13ae64f3
JJ		 4133 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4134 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4135 if (type == 0x8b)
4136 {
4137 /* movl */
13ae64f3
JJ		 4138 bfd_put_8 (output_bfd, 0xc7,
4139 contents + rel->r_offset - 2);
4140 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4141 contents + rel->r_offset - 1);
4142 }
4143 else if (type == 0x2b)
4144 {
4145 /* subl */
13ae64f3
JJ		 4146 bfd_put_8 (output_bfd, 0x81,
4147 contents + rel->r_offset - 2);
4148 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4149 contents + rel->r_offset - 1);
4150 }
37e55690
JJ		 4151 else if (type == 0x03)
4152 {
4153 /* addl */
4154 bfd_put_8 (output_bfd, 0x81,
4155 contents + rel->r_offset - 2);
4156 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4157 contents + rel->r_offset - 1);
4158 }
13ae64f3
JJ		 4159 else
4160 BFD_FAIL ();
37e55690 4161 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4162 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4163 contents + rel->r_offset);
4164 else
eb4ff4d6 4165 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4166 contents + rel->r_offset);
13ae64f3
JJ		 4167 continue;
4168 }
4169 }
4170
6de2ae4a 4171 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4172 abort ();
4173
4174 if (h != NULL)
67a4f2b7
AO		 4175 {
4176 off = h->got.offset;
4177 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4178 }
13ae64f3
JJ		 4179 else
4180 {
4181 if (local_got_offsets == NULL)
4182 abort ();
4183
4184 off = local_got_offsets[r_symndx];
67a4f2b7 4185 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4186 }
4187
4188 if ((off & 1) != 0)
4189 off &= ~1;
26e41594 4190 else
13ae64f3 4191 {
947216bf 4192 Elf_Internal_Rela outrel;
91d6fa6a 4193 int dr_type;
67a4f2b7 4194 asection *sreloc;
13ae64f3 4195
6de2ae4a 4196 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4197 abort ();
4198
67a4f2b7
AO		 4199 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4200
4201 if (GOT_TLS_GDESC_P (tls_type))
4202 {
59d6ffb2 4203 bfd_byte *loc;
67a4f2b7
AO		 4204 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4205 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4206 <= htab->elf.sgotplt->size);
4207 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4208 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4209 + offplt
4210 + htab->sgotplt_jump_table_size);
6de2ae4a 4211 sreloc = htab->elf.srelplt;
67a4f2b7 4212 loc = sreloc->contents;
5ae0bfb6
RS		 4213 loc += (htab->next_tls_desc_index++
4214 * sizeof (Elf32_External_Rel));
67a4f2b7 4215 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4216 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4217 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4218 if (indx == 0)
4219 {
4220 BFD_ASSERT (! unresolved_reloc);
4221 bfd_put_32 (output_bfd,
eb4ff4d6 4222 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4223 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4224 + htab->sgotplt_jump_table_size + 4);
4225 }
4226 else
4227 {
4228 bfd_put_32 (output_bfd, 0,
6de2ae4a 4229 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4230 + htab->sgotplt_jump_table_size + 4);
4231 }
4232 }
4233
6de2ae4a 4234 sreloc = htab->elf.srelgot;
67a4f2b7 4235
6de2ae4a
L		 4236 outrel.r_offset = (htab->elf.sgot->output_section->vma
4237 + htab->elf.sgot->output_offset + off);
13ae64f3 4238
67a4f2b7 4239 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4240 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4241 else if (GOT_TLS_GDESC_P (tls_type))
4242 goto dr_done;
37e55690
JJ		 4243 else if (tls_type == GOT_TLS_IE_POS)
4244 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4245 else
4246 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4247
37e55690 4248 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4249 bfd_put_32 (output_bfd,
4250 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4251 htab->elf.sgot->contents + off);
37e55690 4252 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4253 bfd_put_32 (output_bfd,
eb4ff4d6 4254 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4255 htab->elf.sgot->contents + off);
67a4f2b7 4256 else if (dr_type != R_386_TLS_DESC)
c366c25e 4257 bfd_put_32 (output_bfd, 0,
6de2ae4a 4258 htab->elf.sgot->contents + off);
13ae64f3 4259 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4260
59d6ffb2 4261 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4262
67a4f2b7 4263 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4264 {
4265 if (indx == 0)
4266 {
82e51918 4267 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4268 bfd_put_32 (output_bfd,
eb4ff4d6 4269 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4270 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4271 }
4272 else
4273 {
4274 bfd_put_32 (output_bfd, 0,
6de2ae4a 4275 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4276 outrel.r_info = ELF32_R_INFO (indx,
4277 R_386_TLS_DTPOFF32);
4278 outrel.r_offset += 4;
59d6ffb2 4279 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4280 }
4281 }
37e55690
JJ		 4282 else if (tls_type == GOT_TLS_IE_BOTH)
4283 {
4284 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4285 (indx == 0
4286 ? relocation - elf_i386_dtpoff_base (info)
4287 : 0),
6de2ae4a 4288 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4289 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4290 outrel.r_offset += 4;
59d6ffb2 4291 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4292 }
13ae64f3 4293
67a4f2b7 4294 dr_done:
13ae64f3
JJ		 4295 if (h != NULL)
4296 h->got.offset |= 1;
4297 else
4298 local_got_offsets[r_symndx] |= 1;
4299 }
4300
67a4f2b7
AO		 4301 if (off >= (bfd_vma) -2
4302 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4303 abort ();
67a4f2b7
AO		 4304 if (r_type == R_386_TLS_GOTDESC
4305 || r_type == R_386_TLS_DESC_CALL)
4306 {
4307 relocation = htab->sgotplt_jump_table_size + offplt;
4308 unresolved_reloc = FALSE;
4309 }
4310 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4311 {
6de2ae4a
L		 4312 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4313 + htab->elf.sgotplt->output_offset;
4314 relocation = htab->elf.sgot->output_section->vma
4315 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4316 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4317 && tls_type == GOT_TLS_IE_BOTH)
4318 relocation += 4;
4319 if (r_type == R_386_TLS_IE)
8c37241b 4320 relocation += g_o_t;
b34976b6 4321 unresolved_reloc = FALSE;
13ae64f3 4322 }
67a4f2b7 4323 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4324 {
4325 unsigned int val, type;
4326 bfd_vma roff;
4327
4328 /* GD->IE transition. */
13ae64f3 4329 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4330 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4331 if (type == 0x04)
4332 {
4333 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4334 Change it into:
4335 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4336 val >>= 3;
142411ca 4337 roff = rel->r_offset - 3;
13ae64f3
JJ		 4338 }
4339 else
4340 {
4341 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4342 Change it into:
4343 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4344 roff = rel->r_offset - 2;
4345 }
4346 memcpy (contents + roff,
4347 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4348 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4349 /* If foo is used only with foo@gotntpoff(%reg) and
4350 foo@indntpoff, but not with foo@gottpoff(%reg), change
4351 subl $foo@gottpoff(%reg), %eax
4352 into:
4353 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4354 if (tls_type == GOT_TLS_IE_POS)
4355 contents[roff + 6] = 0x03;
8c37241b 4356 bfd_put_32 (output_bfd,
6de2ae4a
L		 4357 htab->elf.sgot->output_section->vma
4358 + htab->elf.sgot->output_offset + off
4359 - htab->elf.sgotplt->output_section->vma
4360 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4361 contents + roff + 8);
4362 /* Skip R_386_PLT32. */
4363 rel++;
4364 continue;
4365 }
67a4f2b7
AO		 4366 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4367 {
4368 /* GDesc -> IE transition.
4369 It's originally something like:
4370 leal x@tlsdesc(%ebx), %eax
4371
4372 Change it to:
142411ca 4373 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4374 or:
4375 movl x@gottpoff(%ebx), %eax # before negl %eax
4376
4377 Registers other than %eax may be set up here. */
4378
67a4f2b7
AO		 4379 bfd_vma roff;
4380
4381 /* First, make sure it's a leal adding ebx to a 32-bit
4382 offset into any register, although it's probably
4383 almost always going to be eax. */
4384 roff = rel->r_offset;
67a4f2b7
AO		 4385
4386 /* Now modify the instruction as appropriate. */
4387 /* To turn a leal into a movl in the form we use it, it
4388 suffices to change the first byte from 0x8d to 0x8b.
4389 aoliva FIXME: should we decide to keep the leal, all
4390 we have to do is remove the statement below, and
4391 adjust the relaxation of R_386_TLS_DESC_CALL. */
4392 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4393
4394 if (tls_type == GOT_TLS_IE_BOTH)
4395 off += 4;
4396
4397 bfd_put_32 (output_bfd,
6de2ae4a
L		 4398 htab->elf.sgot->output_section->vma
4399 + htab->elf.sgot->output_offset + off
4400 - htab->elf.sgotplt->output_section->vma
4401 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4402 contents + roff);
4403 continue;
4404 }
4405 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4406 {
4407 /* GDesc -> IE transition.
4408 It's originally:
4409 call *(%eax)
4410
4411 Change it to:
142411ca 4412 xchg %ax,%ax
67a4f2b7
AO		 4413 or
4414 negl %eax
4415 depending on how we transformed the TLS_GOTDESC above.
4416 */
4417
67a4f2b7
AO		 4418 bfd_vma roff;
4419
67a4f2b7 4420 roff = rel->r_offset;
67a4f2b7
AO		 4421
4422 /* Now modify the instruction as appropriate. */
4423 if (tls_type != GOT_TLS_IE_NEG)
4424 {
10efb593
L		 4425 /* xchg %ax,%ax */
4426 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4427 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4428 }
4429 else
4430 {
4431 /* negl %eax */
4432 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4433 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4434 }
4435
4436 continue;
4437 }
4438 else
4439 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4440 break;
4441
4442 case R_386_TLS_LDM:
142411ca
L		 4443 if (! elf_i386_tls_transition (info, input_bfd,
4444 input_section, contents,
4445 symtab_hdr, sym_hashes,
4446 &r_type, GOT_UNKNOWN, rel,
4c544807 4447 relend, h, r_symndx))
142411ca 4448 return FALSE;
13ae64f3 4449
142411ca
L		 4450 if (r_type != R_386_TLS_LDM)
4451 {
13ae64f3 4452 /* LD->LE transition:
13ae64f3
JJ		 4453 leal foo(%reg), %eax; call ___tls_get_addr.
4454 We change it into:
4455 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4456 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4457 memcpy (contents + rel->r_offset - 2,
4458 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4459 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4460 rel++;
4461 continue;
4462 }
4463
6de2ae4a 4464 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4465 abort ();
4466
4467 off = htab->tls_ldm_got.offset;
4468 if (off & 1)
4469 off &= ~1;
4470 else
4471 {
947216bf 4472 Elf_Internal_Rela outrel;
13ae64f3 4473
6de2ae4a 4474 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4475 abort ();
4476
6de2ae4a
L		 4477 outrel.r_offset = (htab->elf.sgot->output_section->vma
4478 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4479
4480 bfd_put_32 (output_bfd, 0,
6de2ae4a 4481 htab->elf.sgot->contents + off);
13ae64f3 4482 bfd_put_32 (output_bfd, 0,
6de2ae4a 4483 htab->elf.sgot->contents + off + 4);
13ae64f3 4484 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4485 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4486 htab->tls_ldm_got.offset |= 1;
4487 }
6de2ae4a
L		 4488 relocation = htab->elf.sgot->output_section->vma
4489 + htab->elf.sgot->output_offset + off
4490 - htab->elf.sgotplt->output_section->vma
4491 - htab->elf.sgotplt->output_offset;
b34976b6 4492 unresolved_reloc = FALSE;
13ae64f3
JJ		 4493 break;
4494
4495 case R_386_TLS_LDO_32:
959b0961 4496 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4497 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4498 else
4499 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4500 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4501 break;
4502
4503 case R_386_TLS_LE_32:
13ae64f3 4504 case R_386_TLS_LE:
1d85728f 4505 if (!info->executable)
37e55690 4506 {
947216bf 4507 Elf_Internal_Rela outrel;
37e55690 4508 asection *sreloc;
37e55690
JJ		 4509
4510 outrel.r_offset = rel->r_offset
4511 + input_section->output_section->vma
4512 + input_section->output_offset;
4513 if (h != NULL && h->dynindx != -1)
4514 indx = h->dynindx;
4515 else
4516 indx = 0;
4517 if (r_type == R_386_TLS_LE_32)
4518 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4519 else
4520 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4521 sreloc = elf_section_data (input_section)->sreloc;
4522 if (sreloc == NULL)
4523 abort ();
59d6ffb2 4524 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4525 if (indx)
4526 continue;
4527 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4528 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4529 else
eb4ff4d6 4530 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4531 }
4532 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4533 relocation = elf_i386_tpoff (info, relocation);
37e55690 4534 else
eb4ff4d6 4535 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4536 break;
4537
252b5132
RH		 4538 default:
4539 break;
4540 }
4541
239e1f3a
AM		 4542 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4543 because such sections are not SEC_ALLOC and thus ld.so will
4544 not process them. */
8c694914 4545 if (unresolved_reloc
239e1f3a 4546 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4547 && h->def_dynamic)
4548 && _bfd_elf_section_offset (output_bfd, info, input_section,
4549 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4550 {
4551 (*_bfd_error_handler)
843fe662 4552 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4553 input_bfd,
4554 input_section,
6a30718d 4555 (long) rel->r_offset,
843fe662 4556 howto->name,
6a30718d 4557 h->root.root.string);
b34976b6 4558 return FALSE;
6a30718d 4559 }
83be169b 4560
cbe950e9 4561do_relocation:
252b5132
RH		 4562 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4563 contents, rel->r_offset,
55fd94b0 4564 relocation, 0);
252b5132 4565
62d78908 4566check_relocation_error:
cf5c0c5b 4567 if (r != bfd_reloc_ok)
252b5132 4568 {
cf5c0c5b 4569 const char *name;
ffb2e45b 4570
cf5c0c5b
AM		 4571 if (h != NULL)
4572 name = h->root.root.string;
4573 else
4574 {
4575 name = bfd_elf_string_from_elf_section (input_bfd,
4576 symtab_hdr->sh_link,
4577 sym->st_name);
4578 if (name == NULL)
b34976b6 4579 return FALSE;
cf5c0c5b
AM		 4580 if (*name == '\0')
4581 name = bfd_section_name (input_bfd, sec);
4582 }
ffb2e45b 4583
cf5c0c5b
AM		 4584 if (r == bfd_reloc_overflow)
4585 {
cf5c0c5b 4586 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4587 (info, (h ? &h->root : NULL), name, howto->name,
4588 (bfd_vma) 0, input_bfd, input_section,
4589 rel->r_offset)))
b34976b6 4590 return FALSE;
cf5c0c5b
AM		 4591 }
4592 else
4593 {
4594 (*_bfd_error_handler)
d003868e
AM		 4595 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4596 input_bfd, input_section,
cf5c0c5b 4597 (long) rel->r_offset, name, (int) r);
b34976b6 4598 return FALSE;
cf5c0c5b 4599 }
252b5132
RH		 4600 }
4601 }
4602
b34976b6 4603 return TRUE;
252b5132
RH		 4604}
4605
4606/* Finish up dynamic symbol handling. We set the contents of various
4607 dynamic sections here. */
4608
b34976b6 4609static bfd_boolean
55fd94b0
AM		 4610elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4611 struct bfd_link_info *info,
4612 struct elf_link_hash_entry *h,
4613 Elf_Internal_Sym *sym)
252b5132 4614{
6725bdbf 4615 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4616 unsigned plt_entry_size;
4617 const struct elf_i386_backend_data *abed;
dd7e64d4 4618 struct elf_i386_link_hash_entry *eh;
252b5132 4619
6725bdbf 4620 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4621 if (htab == NULL)
4622 return FALSE;
252b5132 4623
25e762b9
RM		 4624 abed = get_elf_i386_backend_data (output_bfd);
4625 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4626
dd7e64d4
L		 4627 eh = (struct elf_i386_link_hash_entry *) h;
4628
252b5132
RH		 4629 if (h->plt.offset != (bfd_vma) -1)
4630 {
252b5132
RH		 4631 bfd_vma plt_index;
4632 bfd_vma got_offset;
947216bf
AM		 4633 Elf_Internal_Rela rel;
4634 bfd_byte *loc;
cbe950e9
L		 4635 asection *plt, *gotplt, *relplt;
4636
4637 /* When building a static executable, use .iplt, .igot.plt and
4638 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4639 if (htab->elf.splt != NULL)
cbe950e9 4640 {
6de2ae4a
L		 4641 plt = htab->elf.splt;
4642 gotplt = htab->elf.sgotplt;
4643 relplt = htab->elf.srelplt;
cbe950e9
L		 4644 }
4645 else
4646 {
6de2ae4a
L		 4647 plt = htab->elf.iplt;
4648 gotplt = htab->elf.igotplt;
4649 relplt = htab->elf.irelplt;
cbe950e9 4650 }
252b5132
RH		 4651
4652 /* This symbol has an entry in the procedure linkage table. Set
4653 it up. */
4654
cbe950e9
L		 4655 if ((h->dynindx == -1
4656 && !((h->forced_local || info->executable)
4657 && h->def_regular
4658 && h->type == STT_GNU_IFUNC))
4659 || plt == NULL
4660 || gotplt == NULL
4661 || relplt == NULL)
cec7f46a 4662 abort ();
252b5132
RH		 4663
4664 /* Get the index in the procedure linkage table which
4665 corresponds to this symbol. This is the index of this symbol
4666 in all the symbols for which we are making plt entries. The
cbe950e9 4667 first entry in the procedure linkage table is reserved.
252b5132 4668
cbe950e9 4669 Get the offset into the .got table of the entry that
252b5132 4670 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4671 The first three are reserved.
6bbec505 4672
cbe950e9
L		 4673 For static executables, we don't reserve anything. */
4674
6de2ae4a 4675 if (plt == htab->elf.splt)
cbe950e9 4676 {
e1f98742
L		 4677 got_offset = h->plt.offset / plt_entry_size - 1;
4678 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4679 }
4680 else
4681 {
e1f98742
L		 4682 got_offset = h->plt.offset / plt_entry_size;
4683 got_offset = got_offset * 4;
cbe950e9 4684 }
252b5132
RH		 4685
4686 /* Fill in the entry in the procedure linkage table. */
4687 if (! info->shared)
4688 {
25e762b9
RM		 4689 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4690 abed->plt->plt_entry_size);
252b5132 4691 bfd_put_32 (output_bfd,
cbe950e9
L		 4692 (gotplt->output_section->vma
4693 + gotplt->output_offset
252b5132 4694 + got_offset),
25e762b9
RM		 4695 plt->contents + h->plt.offset
4696 + abed->plt->plt_got_offset);
eac338cf 4697
25e762b9 4698 if (abed->is_vxworks)
eac338cf
PB		 4699 {
4700 int s, k, reloc_index;
4701
4702 /* Create the R_386_32 relocation referencing the GOT
4703 for this PLT entry. */
4704
4705 /* S: Current slot number (zero-based). */
25e762b9
RM		 4706 s = ((h->plt.offset - abed->plt->plt_entry_size)
4707 / abed->plt->plt_entry_size);
eac338cf
PB		 4708 /* K: Number of relocations for PLTResolve. */
4709 if (info->shared)
4710 k = PLTRESOLVE_RELOCS_SHLIB;
4711 else
4712 k = PLTRESOLVE_RELOCS;
4713 /* Skip the PLTresolve relocations, and the relocations for
4714 the other PLT slots. */
4715 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4716 loc = (htab->srelplt2->contents + reloc_index
4717 * sizeof (Elf32_External_Rel));
4718
6de2ae4a
L		 4719 rel.r_offset = (htab->elf.splt->output_section->vma
4720 + htab->elf.splt->output_offset
eac338cf 4721 + h->plt.offset + 2),
7325306f 4722 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4723 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4724
4725 /* Create the R_386_32 relocation referencing the beginning of
4726 the PLT for this GOT entry. */
6de2ae4a
L		 4727 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4728 + htab->elf.sgotplt->output_offset
eac338cf 4729 + got_offset);
7325306f 4730 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4731 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4732 loc + sizeof (Elf32_External_Rel));
eac338cf 4733 }
252b5132
RH		 4734 }
4735 else
4736 {
25e762b9
RM		 4737 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4738 abed->plt->plt_entry_size);
252b5132 4739 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4740 plt->contents + h->plt.offset
4741 + abed->plt->plt_got_offset);
252b5132
RH		 4742 }
4743
252b5132
RH		 4744 /* Fill in the entry in the global offset table. */
4745 bfd_put_32 (output_bfd,
cbe950e9
L		 4746 (plt->output_section->vma
4747 + plt->output_offset
252b5132 4748 + h->plt.offset
25e762b9 4749 + abed->plt->plt_lazy_offset),
cbe950e9 4750 gotplt->contents + got_offset);
252b5132
RH		 4751
4752 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4753 rel.r_offset = (gotplt->output_section->vma
4754 + gotplt->output_offset
252b5132 4755 + got_offset);
cbe950e9
L		 4756 if (h->dynindx == -1
4757 || ((info->executable
4758 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4759 && h->def_regular
4760 && h->type == STT_GNU_IFUNC))
4761 {
4762 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4763 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4764 in the .got.plt section. */
4765 bfd_put_32 (output_bfd,
23209a78 4766 (h->root.u.def.value
cbe950e9
L		 4767 + h->root.u.def.section->output_section->vma
4768 + h->root.u.def.section->output_offset),
4769 gotplt->contents + got_offset);
4770 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4771 /* R_386_IRELATIVE comes last. */
4772 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4773 }
4774 else
e1f98742
L		 4775 {
4776 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4777 plt_index = htab->next_jump_slot_index++;
4778 }
cbe950e9 4779 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4780 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4781
e1f98742
L		 4782 /* Don't fill PLT entry for static executables. */
4783 if (plt == htab->elf.splt)
4784 {
4785 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4786 plt->contents + h->plt.offset
4787 + abed->plt->plt_reloc_offset);
4788 bfd_put_32 (output_bfd, - (h->plt.offset
4789 + abed->plt->plt_plt_offset + 4),
4790 plt->contents + h->plt.offset
4791 + abed->plt->plt_plt_offset);
4792 }
dd7e64d4
L		 4793 }
4794 else if (eh->plt_got.offset != (bfd_vma) -1)
4795 {
4796 bfd_vma got_offset, plt_offset;
4797 asection *plt, *got, *gotplt;
4798 const bfd_byte *got_plt_entry;
4799
4800 /* Offset of displacement of the indirect jump. */
4801 bfd_vma plt_got_offset = 2;
e1f98742 4802
dd7e64d4
L		 4803 /* Set the entry in the GOT procedure linkage table. */
4804 plt = htab->plt_got;
4805 got = htab->elf.sgot;
4806 gotplt = htab->elf.sgotplt;
4807 got_offset = h->got.offset;
4808
4809 if (got_offset == (bfd_vma) -1
4810 || plt == NULL
4811 || got == NULL
4812 || gotplt == NULL)
4813 abort ();
4814
4815 /* Fill in the entry in the GOT procedure linkage table. */
4816 if (! info->shared)
252b5132 4817 {
dd7e64d4
L		 4818 got_plt_entry = elf_i386_got_plt_entry;
4819 got_offset += got->output_section->vma + got->output_offset;
252b5132 4820 }
dd7e64d4
L		 4821 else
4822 {
4823 got_plt_entry = elf_i386_pic_got_plt_entry;
4824 got_offset += (got->output_section->vma
4825 + got->output_offset
4826 - gotplt->output_section->vma
4827 - gotplt->output_offset);
4828 }
4829
4830 plt_offset = eh->plt_got.offset;
4831 memcpy (plt->contents + plt_offset, got_plt_entry,
4832 sizeof (elf_i386_got_plt_entry));
4833 bfd_put_32 (output_bfd, got_offset,
4834 plt->contents + plt_offset + plt_got_offset);
4835 }
4836
4837 if (!h->def_regular
4838 && (h->plt.offset != (bfd_vma) -1
4839 || eh->plt_got.offset != (bfd_vma) -1))
4840 {
4841 /* Mark the symbol as undefined, rather than as defined in
4842 the .plt section. Leave the value if there were any
4843 relocations where pointer equality matters (this is a clue
4844 for the dynamic linker, to make function pointer
4845 comparisons work between an application and shared
4846 library), otherwise set it to zero. If a function is only
4847 called from a binary, there is no need to slow down
4848 shared libraries because of that. */
4849 sym->st_shndx = SHN_UNDEF;
4850 if (!h->pointer_equality_needed)
4851 sym->st_value = 0;
252b5132
RH		 4852 }
4853
13ae64f3 4854 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4855 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4856 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4857 {
947216bf 4858 Elf_Internal_Rela rel;
252b5132
RH		 4859
4860 /* This symbol has an entry in the global offset table. Set it
4861 up. */
4862
6de2ae4a 4863 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4864 abort ();
252b5132 4865
6de2ae4a
L		 4866 rel.r_offset = (htab->elf.sgot->output_section->vma
4867 + htab->elf.sgot->output_offset
dc810e39 4868 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4869
dd5724d5
AM		 4870 /* If this is a static link, or it is a -Bsymbolic link and the
4871 symbol is defined locally or was forced to be local because
4872 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4873 The entry in the global offset table will already have been
4874 initialized in the relocate_section function. */
710ab287 4875 if (h->def_regular
0018b0a3
L		 4876 && h->type == STT_GNU_IFUNC)
4877 {
710ab287
L		 4878 if (info->shared)
4879 {
4880 /* Generate R_386_GLOB_DAT. */
4881 goto do_glob_dat;
4882 }
4883 else
4884 {
cd2b2c10
L		 4885 asection *plt;
4886
710ab287
L		 4887 if (!h->pointer_equality_needed)
4888 abort ();
4889
4890 /* For non-shared object, we can't use .got.plt, which
4891 contains the real function addres if we need pointer
4892 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4893 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4894 bfd_put_32 (output_bfd,
4895 (plt->output_section->vma
4896 + plt->output_offset + h->plt.offset),
6de2ae4a 4897 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4898 return TRUE;
4899 }
0018b0a3
L		 4900 }
4901 else if (info->shared
4902 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4903 {
6725bdbf 4904 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4905 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4906 }
252b5132
RH		 4907 else
4908 {
dd5724d5 4909 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4910do_glob_dat:
6725bdbf 4911 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4912 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4913 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4914 }
4915
59d6ffb2 4916 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4917 }
4918
f5385ebf 4919 if (h->needs_copy)
252b5132 4920 {
947216bf 4921 Elf_Internal_Rela rel;
252b5132
RH		 4922
4923 /* This symbol needs a copy reloc. Set it up. */
4924
ffb2e45b
AM		 4925 if (h->dynindx == -1
4926 || (h->root.type != bfd_link_hash_defined
4927 && h->root.type != bfd_link_hash_defweak)
4928 || htab->srelbss == NULL)
4929 abort ();
252b5132
RH		 4930
4931 rel.r_offset = (h->root.u.def.value
4932 + h->root.u.def.section->output_section->vma
4933 + h->root.u.def.section->output_offset);
4934 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4935 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4936 }
4937
b34976b6 4938 return TRUE;
252b5132
RH		 4939}
4940
c25bc9fc
L		 4941/* Finish up local dynamic symbol handling. We set the contents of
4942 various dynamic sections here. */
4943
4944static bfd_boolean
4945elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4946{
4947 struct elf_link_hash_entry *h
4948 = (struct elf_link_hash_entry *) *slot;
4949 struct bfd_link_info *info
23209a78 4950 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4951
4952 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4953 h, NULL);
4954}
4955
38701953
AM		 4956/* Used to decide how to sort relocs in an optimal manner for the
4957 dynamic linker, before writing them out. */
4958
4959static enum elf_reloc_type_class
7e612e98
AM		 4960elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4961 const asection *rel_sec ATTRIBUTE_UNUSED,
4962 const Elf_Internal_Rela *rela)
38701953 4963{
55fd94b0 4964 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4965 {
4966 case R_386_RELATIVE:
4967 return reloc_class_relative;
4968 case R_386_JUMP_SLOT:
4969 return reloc_class_plt;
4970 case R_386_COPY:
4971 return reloc_class_copy;
4972 default:
4973 return reloc_class_normal;
4974 }
4975}
4976
252b5132
RH		 4977/* Finish up the dynamic sections. */
4978
b34976b6 4979static bfd_boolean
55fd94b0
AM		 4980elf_i386_finish_dynamic_sections (bfd *output_bfd,
4981 struct bfd_link_info *info)
252b5132 4982{
6725bdbf 4983 struct elf_i386_link_hash_table *htab;
252b5132 4984 bfd *dynobj;
252b5132 4985 asection *sdyn;
25e762b9 4986 const struct elf_i386_backend_data *abed;
252b5132 4987
6725bdbf 4988 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4989 if (htab == NULL)
4990 return FALSE;
4991
ebe50bae 4992 dynobj = htab->elf.dynobj;
3d4d4302 4993 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4994 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4995
ebe50bae 4996 if (htab->elf.dynamic_sections_created)
252b5132 4997 {
252b5132
RH		 4998 Elf32_External_Dyn *dyncon, *dynconend;
4999
6de2ae4a 5000 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5001 abort ();
252b5132
RH		 5002
5003 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5004 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5005 for (; dyncon < dynconend; dyncon++)
5006 {
5007 Elf_Internal_Dyn dyn;
51b64d56 5008 asection *s;
252b5132
RH		 5009
5010 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5011
5012 switch (dyn.d_tag)
5013 {
5014 default:
25e762b9
RM		 5015 if (abed->is_vxworks
5016 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5017 break;
0ac8d2ca 5018 continue;
252b5132
RH		 5019
5020 case DT_PLTGOT:
6de2ae4a 5021 s = htab->elf.sgotplt;
8c37241b 5022 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5023 break;
5024
252b5132 5025 case DT_JMPREL:
6de2ae4a 5026 s = htab->elf.srelplt;
6348e046 5027 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5028 break;
5029
5030 case DT_PLTRELSZ:
6de2ae4a 5031 s = htab->elf.srelplt;
eea6121a 5032 dyn.d_un.d_val = s->size;
252b5132
RH		 5033 break;
5034
5035 case DT_RELSZ:
5036 /* My reading of the SVR4 ABI indicates that the
5037 procedure linkage table relocs (DT_JMPREL) should be
5038 included in the overall relocs (DT_REL). This is
5039 what Solaris does. However, UnixWare can not handle
5040 that case. Therefore, we override the DT_RELSZ entry
6348e046 5041 here to make it not include the JMPREL relocs. */
6de2ae4a 5042 s = htab->elf.srelplt;
6348e046
AM		 5043 if (s == NULL)
5044 continue;
eea6121a 5045 dyn.d_un.d_val -= s->size;
6348e046
AM		 5046 break;
5047
5048 case DT_REL:
5049 /* We may not be using the standard ELF linker script.
5050 If .rel.plt is the first .rel section, we adjust
5051 DT_REL to not include it. */
6de2ae4a 5052 s = htab->elf.srelplt;
6348e046
AM		 5053 if (s == NULL)
5054 continue;
5055 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5056 continue;
eea6121a 5057 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5058 break;
5059 }
0ac8d2ca
AM		 5060
5061 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5062 }
5063
5064 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5065 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 5066 {
5067 if (info->shared)
eac338cf 5068 {
25e762b9
RM		 5069 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5070 abed->plt->plt0_entry_size);
5071 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5072 abed->plt0_pad_byte,
5073 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5074 }
252b5132
RH		 5075 else
5076 {
25e762b9
RM		 5077 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5078 abed->plt->plt0_entry_size);
5079 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5080 abed->plt0_pad_byte,
5081 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5082 bfd_put_32 (output_bfd,
6de2ae4a
L		 5083 (htab->elf.sgotplt->output_section->vma
5084 + htab->elf.sgotplt->output_offset
6725bdbf 5085 + 4),
25e762b9
RM		 5086 htab->elf.splt->contents
5087 + abed->plt->plt0_got1_offset);
252b5132 5088 bfd_put_32 (output_bfd,
6de2ae4a
L		 5089 (htab->elf.sgotplt->output_section->vma
5090 + htab->elf.sgotplt->output_offset
6725bdbf 5091 + 8),
25e762b9
RM		 5092 htab->elf.splt->contents
5093 + abed->plt->plt0_got2_offset);
eac338cf 5094
25e762b9 5095 if (abed->is_vxworks)
eac338cf
PB		 5096 {
5097 Elf_Internal_Rela rel;
7325306f 5098
eac338cf
PB		 5099 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5100 On IA32 we use REL relocations so the addend goes in
5101 the PLT directly. */
6de2ae4a
L		 5102 rel.r_offset = (htab->elf.splt->output_section->vma
5103 + htab->elf.splt->output_offset
25e762b9 5104 + abed->plt->plt0_got1_offset);
7325306f 5105 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5106 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5107 htab->srelplt2->contents);
5108 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5109 rel.r_offset = (htab->elf.splt->output_section->vma
5110 + htab->elf.splt->output_offset
25e762b9 5111 + abed->plt->plt0_got2_offset);
7325306f 5112 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5113 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5114 htab->srelplt2->contents +
5115 sizeof (Elf32_External_Rel));
5116 }
252b5132
RH		 5117 }
5118
5119 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5120 really seem like the right value. */
6de2ae4a 5121 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5122 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5123
5124 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 5125 if (abed->is_vxworks && !info->shared)
eac338cf 5126 {
25e762b9
RM		 5127 int num_plts = (htab->elf.splt->size
5128 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5129 unsigned char *p;
eac338cf
PB		 5130
5131 p = htab->srelplt2->contents;
5132 if (info->shared)
5133 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5134 else
5135 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5136
5137 for (; num_plts; num_plts--)
5138 {
5139 Elf_Internal_Rela rel;
5140 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5141 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5142 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5143 p += sizeof (Elf32_External_Rel);
5144
5145 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5146 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5147 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5148 p += sizeof (Elf32_External_Rel);
5149 }
5150 }
252b5132
RH		 5151 }
5152 }
5153
6de2ae4a 5154 if (htab->elf.sgotplt)
252b5132 5155 {
56d4289c
L		 5156 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5157 {
5158 (*_bfd_error_handler)
5159 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5160 return FALSE;
5161 }
5162
12d0ee4a 5163 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5164 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5165 {
5166 bfd_put_32 (output_bfd,
55fd94b0 5167 (sdyn == NULL ? 0
12d0ee4a 5168 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5169 htab->elf.sgotplt->contents);
5170 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5171 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5172 }
252b5132 5173
6de2ae4a 5174 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5175 }
8c37241b 5176
e41b3a13 5177 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5178 if (htab->plt_eh_frame != NULL
5179 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5180 {
5181 if (htab->elf.splt != NULL
5182 && htab->elf.splt->size != 0
5183 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5184 && htab->elf.splt->output_section != NULL
5185 && htab->plt_eh_frame->output_section != NULL)
5186 {
5187 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5188 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5189 + htab->plt_eh_frame->output_offset
5190 + PLT_FDE_START_OFFSET;
5191 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5192 htab->plt_eh_frame->contents
5193 + PLT_FDE_START_OFFSET);
5194 }
5195 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5196 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5197 {
5198 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5199 htab->plt_eh_frame,
5200 htab->plt_eh_frame->contents))
5201 return FALSE;
5202 }
5203 }
5204
6de2ae4a
L		 5205 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5206 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5207
c25bc9fc
L		 5208 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5209 htab_traverse (htab->loc_hash_table,
5210 elf_i386_finish_local_dynamic_symbol,
5211 info);
5212
b34976b6 5213 return TRUE;
252b5132
RH		 5214}
5215
3972882e 5216/* Return an array of PLT entry symbol values. */
4c45e5c9 5217
3972882e
L		 5218static bfd_vma *
5219elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5220 asection *relplt)
4c45e5c9 5221{
3972882e
L		 5222 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5223 arelent *p;
5224 long count, i;
5225 bfd_vma *plt_sym_val;
144bed8d 5226 bfd_vma plt_offset;
3972882e
L		 5227 bfd_byte *plt_contents;
5228 const struct elf_i386_backend_data *bed
5229 = get_elf_i386_backend_data (abfd);
5230 Elf_Internal_Shdr *hdr;
5231
5232 /* Get the .plt section contents. */
5233 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5234 if (plt_contents == NULL)
5235 return NULL;
5236 if (!bfd_get_section_contents (abfd, (asection *) plt,
5237 plt_contents, 0, plt->size))
5238 {
5239bad_return:
5240 free (plt_contents);
5241 return NULL;
5242 }
144bed8d 5243
3972882e
L		 5244 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5245 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5246 goto bad_return;
144bed8d 5247
3972882e
L		 5248 hdr = &elf_section_data (relplt)->this_hdr;
5249 count = relplt->size / hdr->sh_entsize;
5250
5251 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5252 if (plt_sym_val == NULL)
5253 goto bad_return;
cca5b8b6 5254
35181b3e 5255 for (i = 0; i < count; i++)
3972882e 5256 plt_sym_val[i] = -1;
cca5b8b6 5257
3972882e
L		 5258 plt_offset = bed->plt->plt_entry_size;
5259 p = relplt->relocation;
5260 for (i = 0; i < count; i++, p++)
144bed8d 5261 {
3972882e
L		 5262 long reloc_index;
5263
6f25f223 5264 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5265 if (p->howto == NULL)
6f25f223 5266 continue;
533d0af0
L		 5267
5268 if (p->howto->type != R_386_JUMP_SLOT
5269 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5270 continue;
5271
5272 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5273 + bed->plt->plt_reloc_offset));
5274 reloc_index /= sizeof (Elf32_External_Rel);
5275 if (reloc_index >= count)
5276 abort ();
5277 plt_sym_val[reloc_index] = plt->vma + plt_offset;
144bed8d 5278 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5279
5280 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5281 section. */
5282 if (plt_offset >= plt->size)
5283 break;
144bed8d
L		 5284 }
5285
3972882e
L		 5286 free (plt_contents);
5287
5288 return plt_sym_val;
5289}
5290
5291/* Similar to _bfd_elf_get_synthetic_symtab. */
5292
5293static long
5294elf_i386_get_synthetic_symtab (bfd *abfd,
5295 long symcount,
5296 asymbol **syms,
5297 long dynsymcount,
5298 asymbol **dynsyms,
5299 asymbol **ret)
5300{
5301 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5302 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5303 dynsymcount, dynsyms, ret,
5304 plt,
5305 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5306}
5307
fdc90cb4
JJ		 5308/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5309
5310static bfd_boolean
5311elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5312{
5313 if (h->plt.offset != (bfd_vma) -1
5314 && !h->def_regular
5315 && !h->pointer_equality_needed)
5316 return FALSE;
5317
5318 return _bfd_elf_hash_symbol (h);
5319}
4c45e5c9 5320
d8045f23
NC		 5321/* Hook called by the linker routine which adds symbols from an object
5322 file. */
5323
5324static bfd_boolean
c16153ae 5325elf_i386_add_symbol_hook (bfd * abfd,
f1885d1e 5326 struct bfd_link_info * info,
d8045f23
NC		 5327 Elf_Internal_Sym * sym,
5328 const char ** namep ATTRIBUTE_UNUSED,
5329 flagword * flagsp ATTRIBUTE_UNUSED,
5330 asection ** secp ATTRIBUTE_UNUSED,
5331 bfd_vma * valp ATTRIBUTE_UNUSED)
5332{
f1885d1e
AM		 5333 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5334 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
5335 && (abfd->flags & DYNAMIC) == 0
5336 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
f64b2e8d 5337 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5338
5339 return TRUE;
5340}
5341
6d00b590 5342#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5343#define TARGET_LITTLE_NAME "elf32-i386"
5344#define ELF_ARCH bfd_arch_i386
ae95ffa6 5345#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5346#define ELF_MACHINE_CODE EM_386
5347#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5348
5349#define elf_backend_can_gc_sections 1
51b64d56 5350#define elf_backend_can_refcount 1
252b5132
RH		 5351#define elf_backend_want_got_plt 1
5352#define elf_backend_plt_readonly 1
5353#define elf_backend_want_plt_sym 0
5354#define elf_backend_got_header_size 12
e41b3a13 5355#define elf_backend_plt_alignment 4
f7483970 5356#define elf_backend_extern_protected_data 1
252b5132 5357
8c29f035
AM		 5358/* Support RELA for objdump of prelink objects. */
5359#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5360#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5361
13ae64f3 5362#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5363
dd5724d5
AM		 5364#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5365#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5366#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5367#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5368#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5369
5370#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5371#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5372#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5373#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5374#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5375#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5376#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5377#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5378#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5379#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5380#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5381#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5382#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5383#define elf_backend_relocate_section elf_i386_relocate_section
5384#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5385#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5386#define elf_backend_omit_section_dynsym \
5387 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5388#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5389#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5390
252b5132 5391#include "elf32-target.h"
2bc3c89a
AM		 5392
5393/* FreeBSD support. */
5394
5395#undef TARGET_LITTLE_SYM
6d00b590 5396#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5397#undef TARGET_LITTLE_NAME
5398#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5399#undef ELF_OSABI
5400#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5401
5402/* The kernel recognizes executables as valid only if they carry a
5403 "FreeBSD" label in the ELF header. So we put this label on all
5404 executables and (for simplicity) also all other object files. */
5405
2bc3c89a 5406static void
d8045f23 5407elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5408{
78245035 5409 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5410
2bc3c89a 5411#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5412 {
5413 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5414 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5415 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5416 }
caf47ea6 5417#endif
2bc3c89a
AM		 5418}
5419
5420#undef elf_backend_post_process_headers
d8045f23 5421#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5422#undef elf32_bed
5423#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5424
d8045f23
NC		 5425#undef elf_backend_add_symbol_hook
5426
2bc3c89a 5427#include "elf32-target.h"
eac338cf 5428
a6cc6b3b
RO		 5429/* Solaris 2. */
5430
5431#undef TARGET_LITTLE_SYM
6d00b590 5432#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5433#undef TARGET_LITTLE_NAME
5434#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5435
914082d1
L		 5436#undef elf_backend_post_process_headers
5437
a6cc6b3b
RO		 5438/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5439 objects won't be recognized. */
5440#undef ELF_OSABI
5441
5442#undef elf32_bed
5443#define elf32_bed elf32_i386_sol2_bed
5444
7dc98aea
RO		 5445/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5446 boundary. */
5447#undef elf_backend_static_tls_alignment
5448#define elf_backend_static_tls_alignment 8
5449
a6cc6b3b
RO		 5450/* The Solaris 2 ABI requires a plt symbol on all platforms.
5451
5452 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5453 File, p.63. */
5454#undef elf_backend_want_plt_sym
5455#define elf_backend_want_plt_sym 1
5456
5457#include "elf32-target.h"
5458
bf64a951
L		 5459/* Intel MCU support. */
5460
5461static bfd_boolean
5462elf32_iamcu_elf_object_p (bfd *abfd)
5463{
5464 /* Set the right machine number for an IAMCU elf32 file. */
5465 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
5466 return TRUE;
5467}
5468
5469#undef TARGET_LITTLE_SYM
5470#define TARGET_LITTLE_SYM iamcu_elf32_vec
5471#undef TARGET_LITTLE_NAME
5472#define TARGET_LITTLE_NAME "elf32-iamcu"
5473#undef ELF_ARCH
5474#define ELF_ARCH bfd_arch_iamcu
5475
5476#undef ELF_MACHINE_CODE
5477#define ELF_MACHINE_CODE EM_IAMCU
5478
5479#undef ELF_OSABI
5480
5481#undef elf32_bed
5482#define elf32_bed elf32_iamcu_bed
5483
5484#undef elf_backend_object_p
5485#define elf_backend_object_p elf32_iamcu_elf_object_p
5486
5487#undef elf_backend_static_tls_alignment
5488
5489#undef elf_backend_want_plt_sym
5490#define elf_backend_want_plt_sym 0
5491
5492#include "elf32-target.h"
5493
5494/* Restore defaults. */
5495#undef ELF_ARCH
5496#define ELF_ARCH bfd_arch_i386
5497#undef ELF_MACHINE_CODE
5498#define ELF_MACHINE_CODE EM_386
5499
a27e4371
RM		 5500/* Native Client support. */
5501
5502#undef TARGET_LITTLE_SYM
6d00b590 5503#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 5504#undef TARGET_LITTLE_NAME
5505#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5506#undef elf32_bed
5507#define elf32_bed elf32_i386_nacl_bed
5508
5509#undef ELF_MAXPAGESIZE
5510#define ELF_MAXPAGESIZE 0x10000
5511
5512/* Restore defaults. */
5513#undef ELF_OSABI
5514#undef elf_backend_want_plt_sym
5515#define elf_backend_want_plt_sym 0
5516#undef elf_backend_post_process_headers
a27e4371
RM		 5517#undef elf_backend_static_tls_alignment
5518
5519/* NaCl uses substantially different PLT entries for the same effects. */
5520
5521#undef elf_backend_plt_alignment
5522#define elf_backend_plt_alignment 5
5523#define NACL_PLT_ENTRY_SIZE 64
5524#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5525
5526static const bfd_byte elf_i386_nacl_plt0_entry[] =
5527 {
5528 0xff, 0x35, /* pushl contents of address */
5529 0, 0, 0, 0, /* replaced with address of .got + 4. */
5530 0x8b, 0x0d, /* movl contents of address, %ecx */
5531 0, 0, 0, 0, /* replaced with address of .got + 8. */
5532 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5533 0xff, 0xe1 /* jmp *%ecx */
5534 };
5535
5536static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5537 {
5538 0x8b, 0x0d, /* movl contents of address, %ecx */
5539 0, 0, 0, 0, /* replaced with GOT slot address. */
5540 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5541 0xff, 0xe1, /* jmp *%ecx */
5542
5543 /* Pad to the next 32-byte boundary with nop instructions. */
5544 0x90,
5545 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5546 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5547
5548 /* Lazy GOT entries point here (32-byte aligned). */
5549 0x68, /* pushl immediate */
5550 0, 0, 0, 0, /* replaced with reloc offset. */
5551 0xe9, /* jmp relative */
5552 0, 0, 0, 0, /* replaced with offset to .plt. */
5553
5554 /* Pad to the next 32-byte boundary with nop instructions. */
5555 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5556 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5557 0x90, 0x90
5558 };
5559
5560static const bfd_byte
5561elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5562 {
5563 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5564 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5565 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5566 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5567
5568 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5569 so pad to that size with nop instructions. */
5570 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5571 };
5572
5573static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5574 {
5575 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5576 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5577 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5578 0xff, 0xe1, /* jmp *%ecx */
5579
5580 /* Pad to the next 32-byte boundary with nop instructions. */
5581 0x90,
5582 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5583 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5584
5585 /* Lazy GOT entries point here (32-byte aligned). */
5586 0x68, /* pushl immediate */
5587 0, 0, 0, 0, /* replaced with offset into relocation table. */
5588 0xe9, /* jmp relative */
5589 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5590
5591 /* Pad to the next 32-byte boundary with nop instructions. */
5592 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5593 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5594 0x90, 0x90
5595 };
5596
5597static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5598 {
5599#if (PLT_CIE_LENGTH != 20 \
5600 || PLT_FDE_LENGTH != 36 \
5601 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5602 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5603# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5604#endif
5605 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5606 0, 0, 0, 0, /* CIE ID */
5607 1, /* CIE version */
5608 'z', 'R', 0, /* Augmentation string */
5609 1, /* Code alignment factor */
5610 0x7c, /* Data alignment factor: -4 */
5611 8, /* Return address column */
5612 1, /* Augmentation size */
5613 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5614 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5615 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5616 DW_CFA_nop, DW_CFA_nop,
5617
5618 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5619 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5620 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5621 0, 0, 0, 0, /* .plt size goes here */
5622 0, /* Augmentation size */
5623 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5624 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5625 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5626 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5627 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5628 13, /* Block length */
5629 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5630 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5631 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5632 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5633 DW_CFA_nop, DW_CFA_nop
5634 };
5635
5636static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5637 {
5638 elf_i386_nacl_plt0_entry, /* plt0_entry */
5639 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5640 2, /* plt0_got1_offset */
5641 8, /* plt0_got2_offset */
5642 elf_i386_nacl_plt_entry, /* plt_entry */
5643 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5644 2, /* plt_got_offset */
5645 33, /* plt_reloc_offset */
5646 38, /* plt_plt_offset */
5647 32, /* plt_lazy_offset */
5648 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5649 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5650 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5651 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5652 };
5653
5654static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5655 {
5656 &elf_i386_nacl_plt, /* plt */
5657 0x90, /* plt0_pad_byte: nop insn */
5658 0, /* is_vxworks */
5659 };
5660
64b384e1
RM		 5661static bfd_boolean
5662elf32_i386_nacl_elf_object_p (bfd *abfd)
5663{
5664 /* Set the right machine number for a NaCl i386 ELF32 file. */
5665 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
5666 return TRUE;
5667}
5668
a27e4371
RM		 5669#undef elf_backend_arch_data
5670#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5671
64b384e1
RM		 5672#undef elf_backend_object_p
5673#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 5674#undef elf_backend_modify_segment_map
5675#define elf_backend_modify_segment_map nacl_modify_segment_map
5676#undef elf_backend_modify_program_headers
5677#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5678#undef elf_backend_final_write_processing
5679#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5680
a27e4371
RM		 5681#include "elf32-target.h"
5682
5a68afcf 5683/* Restore defaults. */
64b384e1 5684#undef elf_backend_object_p
5a68afcf
RM		 5685#undef elf_backend_modify_segment_map
5686#undef elf_backend_modify_program_headers
887badb3 5687#undef elf_backend_final_write_processing
5a68afcf 5688
eac338cf
PB		 5689/* VxWorks support. */
5690
5691#undef TARGET_LITTLE_SYM
6d00b590 5692#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 5693#undef TARGET_LITTLE_NAME
5694#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5695#undef ELF_OSABI
a27e4371
RM		 5696#undef elf_backend_plt_alignment
5697#define elf_backend_plt_alignment 4
eac338cf 5698
23209a78
RM		 5699static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5700 {
25e762b9 5701 &elf_i386_plt, /* plt */
23209a78
RM		 5702 0x90, /* plt0_pad_byte */
5703 1, /* is_vxworks */
5704 };
eac338cf 5705
23209a78
RM		 5706#undef elf_backend_arch_data
5707#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5708
13285a1b 5709#undef elf_backend_relocs_compatible
eac338cf
PB		 5710#undef elf_backend_add_symbol_hook
5711#define elf_backend_add_symbol_hook \
5712 elf_vxworks_add_symbol_hook
5713#undef elf_backend_link_output_symbol_hook
5714#define elf_backend_link_output_symbol_hook \
9c72ff84 5715 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5716#undef elf_backend_emit_relocs
5717#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5718#undef elf_backend_final_write_processing
5719#define elf_backend_final_write_processing \
5720 elf_vxworks_final_write_processing
7dc98aea 5721#undef elf_backend_static_tls_alignment
eac338cf
PB		 5722
5723/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5724 define it. */
5725#undef elf_backend_want_plt_sym
5726#define elf_backend_want_plt_sym 1
5727
5728#undef elf32_bed
5729#define elf32_bed elf32_i386_vxworks_bed
5730
5731#include "elf32-target.h"
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