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[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
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252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
4b95cf5c 2 Copyright (C) 1993-2014 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{
b34976b6 40 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
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
dd7e64d4
L		 759 /* Information about the GOT PLT entry. Filled when there are both
760 GOT and PLT relocations against the same function. */
761 union gotplt_union plt_got;
762
67a4f2b7
AO		 763 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
764 starting at the end of the jump table. */
765 bfd_vma tlsdesc_got;
13ae64f3
JJ		 766};
767
768#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
769
770struct elf_i386_obj_tdata
771{
772 struct elf_obj_tdata root;
773
774 /* tls_type for each local got entry. */
775 char *local_got_tls_type;
67a4f2b7
AO		 776
777 /* GOTPLT entries for TLS descriptors. */
778 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 779};
780
13ae64f3
JJ		 781#define elf_i386_tdata(abfd) \
782 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
783
784#define elf_i386_local_got_tls_type(abfd) \
785 (elf_i386_tdata (abfd)->local_got_tls_type)
786
67a4f2b7
AO		 787#define elf_i386_local_tlsdesc_gotent(abfd) \
788 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
789
0ffa91dd
NC		 790#define is_i386_elf(bfd) \
791 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
792 && elf_tdata (bfd) != NULL \
4dfe6ac6 793 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 794
b34976b6 795static bfd_boolean
55fd94b0 796elf_i386_mkobject (bfd *abfd)
13ae64f3 797{
0ffa91dd 798 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 799 I386_ELF_DATA);
13ae64f3 800}
cedb70c5 801
252b5132
RH		 802/* i386 ELF linker hash table. */
803
804struct elf_i386_link_hash_table
805{
ebe50bae 806 struct elf_link_hash_table elf;
252b5132 807
6725bdbf 808 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 809 asection *sdynbss;
810 asection *srelbss;
e41b3a13 811 asection *plt_eh_frame;
dd7e64d4 812 asection *plt_got;
9635fe29 813
4dfe6ac6
NC		 814 union
815 {
13ae64f3
JJ		 816 bfd_signed_vma refcount;
817 bfd_vma offset;
818 } tls_ldm_got;
819
67a4f2b7
AO		 820 /* The amount of space used by the reserved portion of the sgotplt
821 section, plus whatever space is used by the jump slots. */
822 bfd_vma sgotplt_jump_table_size;
823
87d72d41
AM		 824 /* Small local sym cache. */
825 struct sym_cache sym_cache;
9f03412a
AO		 826
827 /* _TLS_MODULE_BASE_ symbol. */
828 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 829
830 /* Used by local STT_GNU_IFUNC symbols. */
831 htab_t loc_hash_table;
4dfe6ac6
NC		 832 void * loc_hash_memory;
833
834 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
835 asection *srelplt2;
836
4dfe6ac6
NC		 837 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
838 bfd_vma next_tls_desc_index;
e1f98742
L		 839
840 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
841 bfd_vma next_jump_slot_index;
842
843 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
844 bfd_vma next_irelative_index;
6725bdbf 845};
252b5132
RH		 846
847/* Get the i386 ELF linker hash table from a link_info structure. */
848
849#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 850 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
851 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 852
67a4f2b7 853#define elf_i386_compute_jump_table_size(htab) \
998d811a 854 ((htab)->elf.srelplt->reloc_count * 4)
67a4f2b7 855
252b5132
RH		 856/* Create an entry in an i386 ELF linker hash table. */
857
858static struct bfd_hash_entry *
eb4ff4d6
L		 859elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
860 struct bfd_hash_table *table,
861 const char *string)
252b5132 862{
252b5132
RH		 863 /* Allocate the structure if it has not already been allocated by a
864 subclass. */
ebe50bae
AM		 865 if (entry == NULL)
866 {
a50b1753
NC		 867 entry = (struct bfd_hash_entry *)
868 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 869 if (entry == NULL)
870 return entry;
871 }
252b5132
RH		 872
873 /* Call the allocation method of the superclass. */
ebe50bae
AM		 874 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
875 if (entry != NULL)
252b5132 876 {
ebe50bae
AM		 877 struct elf_i386_link_hash_entry *eh;
878
879 eh = (struct elf_i386_link_hash_entry *) entry;
880 eh->dyn_relocs = NULL;
13ae64f3 881 eh->tls_type = GOT_UNKNOWN;
dd7e64d4 882 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 883 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 884 }
885
ebe50bae 886 return entry;
252b5132
RH		 887}
888
c25bc9fc
L		 889/* Compute a hash of a local hash entry. We use elf_link_hash_entry
890 for local symbol so that we can handle local STT_GNU_IFUNC symbols
891 as global symbol. We reuse indx and dynstr_index for local symbol
892 hash since they aren't used by global symbols in this backend. */
893
894static hashval_t
895elf_i386_local_htab_hash (const void *ptr)
896{
897 struct elf_link_hash_entry *h
898 = (struct elf_link_hash_entry *) ptr;
d2149d72 899 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 900}
901
902/* Compare local hash entries. */
903
904static int
905elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
906{
907 struct elf_link_hash_entry *h1
908 = (struct elf_link_hash_entry *) ptr1;
909 struct elf_link_hash_entry *h2
910 = (struct elf_link_hash_entry *) ptr2;
911
912 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
913}
914
915/* Find and/or create a hash entry for local symbol. */
916
917static struct elf_link_hash_entry *
918elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
919 bfd *abfd, const Elf_Internal_Rela *rel,
920 bfd_boolean create)
921{
922 struct elf_i386_link_hash_entry e, *ret;
923 asection *sec = abfd->sections;
d2149d72
L		 924 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
925 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 926 void **slot;
927
928 e.elf.indx = sec->id;
929 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
930 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
931 create ? INSERT : NO_INSERT);
932
933 if (!slot)
934 return NULL;
935
936 if (*slot)
937 {
938 ret = (struct elf_i386_link_hash_entry *) *slot;
939 return &ret->elf;
940 }
941
942 ret = (struct elf_i386_link_hash_entry *)
943 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
944 sizeof (struct elf_i386_link_hash_entry));
945 if (ret)
946 {
947 memset (ret, 0, sizeof (*ret));
948 ret->elf.indx = sec->id;
949 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
950 ret->elf.dynindx = -1;
dd7e64d4 951 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 952 *slot = ret;
953 }
954 return &ret->elf;
955}
956
68faa637
AM		 957/* Destroy an i386 ELF linker hash table. */
958
959static void
d495ab0d 960elf_i386_link_hash_table_free (bfd *obfd)
68faa637
AM		 961{
962 struct elf_i386_link_hash_table *htab
d495ab0d 963 = (struct elf_i386_link_hash_table *) obfd->link.hash;
68faa637
AM		 964
965 if (htab->loc_hash_table)
966 htab_delete (htab->loc_hash_table);
967 if (htab->loc_hash_memory)
968 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 969 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 970}
971
252b5132
RH		 972/* Create an i386 ELF linker hash table. */
973
974static struct bfd_link_hash_table *
55fd94b0 975elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 976{
977 struct elf_i386_link_hash_table *ret;
dc810e39 978 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 979
7bf52ea2 980 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 981 if (ret == NULL)
252b5132
RH		 982 return NULL;
983
eb4ff4d6
L		 984 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
985 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 986 sizeof (struct elf_i386_link_hash_entry),
987 I386_ELF_DATA))
252b5132 988 {
e2d34d7d 989 free (ret);
252b5132
RH		 990 return NULL;
991 }
992
c25bc9fc
L		 993 ret->loc_hash_table = htab_try_create (1024,
994 elf_i386_local_htab_hash,
995 elf_i386_local_htab_eq,
996 NULL);
997 ret->loc_hash_memory = objalloc_create ();
998 if (!ret->loc_hash_table || !ret->loc_hash_memory)
999 {
d495ab0d 1000 elf_i386_link_hash_table_free (abfd);
c25bc9fc
L		 1001 return NULL;
1002 }
d495ab0d 1003 ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
c25bc9fc 1004
ebe50bae 1005 return &ret->elf.root;
252b5132
RH		 1006}
1007
6725bdbf
AM		 1008/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1009 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1010 hash table. */
1011
b34976b6 1012static bfd_boolean
55fd94b0 1013elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1014{
1015 struct elf_i386_link_hash_table *htab;
1016
6725bdbf 1017 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1018 return FALSE;
6725bdbf 1019
6de2ae4a 1020 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1021 if (htab == NULL)
1022 return FALSE;
1023
3d4d4302 1024 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
6725bdbf 1025 if (!info->shared)
3d4d4302 1026 htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
6725bdbf 1027
6de2ae4a 1028 if (!htab->sdynbss
6725bdbf
AM		 1029 || (!info->shared && !htab->srelbss))
1030 abort ();
1031
23209a78 1032 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1033 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1034 &htab->srelplt2))
711de32c 1035 return FALSE;
eac338cf 1036
e41b3a13 1037 if (!info->no_ld_generated_unwind_info
2fe0fd06 1038 && htab->plt_eh_frame == NULL
e4de50d4 1039 && htab->elf.splt != NULL)
e41b3a13 1040 {
bbf96e4e
L		 1041 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1042 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1043 | SEC_LINKER_CREATED);
e41b3a13 1044 htab->plt_eh_frame
bbf96e4e 1045 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1046 if (htab->plt_eh_frame == NULL
1047 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1048 return FALSE;
e41b3a13
JJ		 1049 }
1050
b34976b6 1051 return TRUE;
6725bdbf
AM		 1052}
1053
ebe50bae
AM		 1054/* Copy the extra info we tack onto an elf_link_hash_entry. */
1055
51b64d56 1056static void
fcfa13d2 1057elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1058 struct elf_link_hash_entry *dir,
1059 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1060{
1061 struct elf_i386_link_hash_entry *edir, *eind;
1062
1063 edir = (struct elf_i386_link_hash_entry *) dir;
1064 eind = (struct elf_i386_link_hash_entry *) ind;
1065
bbd7ec4a 1066 if (eind->dyn_relocs != NULL)
ebe50bae 1067 {
bbd7ec4a
AM		 1068 if (edir->dyn_relocs != NULL)
1069 {
e03a8ed8
L		 1070 struct elf_dyn_relocs **pp;
1071 struct elf_dyn_relocs *p;
bbd7ec4a 1072
fcfa13d2 1073 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1074 list. Merge any entries against the same section. */
1075 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1076 {
e03a8ed8 1077 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1078
1079 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1080 if (q->sec == p->sec)
1081 {
1082 q->pc_count += p->pc_count;
1083 q->count += p->count;
1084 *pp = p->next;
1085 break;
1086 }
1087 if (q == NULL)
1088 pp = &p->next;
1089 }
1090 *pp = edir->dyn_relocs;
1091 }
1092
ebe50bae
AM		 1093 edir->dyn_relocs = eind->dyn_relocs;
1094 eind->dyn_relocs = NULL;
1095 }
ebe50bae 1096
cd67d266
JJ		 1097 if (ind->root.type == bfd_link_hash_indirect
1098 && dir->got.refcount <= 0)
1099 {
1100 edir->tls_type = eind->tls_type;
1101 eind->tls_type = GOT_UNKNOWN;
1102 }
81848ca0
AM		 1103
1104 if (ELIMINATE_COPY_RELOCS
1105 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1106 && dir->dynamic_adjusted)
1107 {
1108 /* If called to transfer flags for a weakdef during processing
1109 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1110 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1111 dir->ref_dynamic |= ind->ref_dynamic;
1112 dir->ref_regular |= ind->ref_regular;
1113 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1114 dir->needs_plt |= ind->needs_plt;
1115 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1116 }
81848ca0 1117 else
fcfa13d2 1118 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 1119}
1120
142411ca
L		 1121/* Return TRUE if the TLS access code sequence support transition
1122 from R_TYPE. */
1123
1124static bfd_boolean
1125elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1126 bfd_byte *contents,
1127 Elf_Internal_Shdr *symtab_hdr,
1128 struct elf_link_hash_entry **sym_hashes,
1129 unsigned int r_type,
1130 const Elf_Internal_Rela *rel,
1131 const Elf_Internal_Rela *relend)
13ae64f3 1132{
142411ca
L		 1133 unsigned int val, type;
1134 unsigned long r_symndx;
1135 struct elf_link_hash_entry *h;
1136 bfd_vma offset;
1137
1138 /* Get the section contents. */
1139 if (contents == NULL)
1140 {
1141 if (elf_section_data (sec)->this_hdr.contents != NULL)
1142 contents = elf_section_data (sec)->this_hdr.contents;
1143 else
1144 {
1145 /* FIXME: How to better handle error condition? */
1146 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1147 return FALSE;
13ae64f3 1148
142411ca
L		 1149 /* Cache the section contents for elf_link_input_bfd. */
1150 elf_section_data (sec)->this_hdr.contents = contents;
1151 }
1152 }
1153
1154 offset = rel->r_offset;
13ae64f3 1155 switch (r_type)
142411ca
L		 1156 {
1157 case R_386_TLS_GD:
1158 case R_386_TLS_LDM:
1159 if (offset < 2 || (rel + 1) >= relend)
1160 return FALSE;
1161
1162 type = bfd_get_8 (abfd, contents + offset - 2);
1163 if (r_type == R_386_TLS_GD)
1164 {
09e8c3bf 1165 /* Check transition from GD access model. Only
142411ca
L		 1166 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1167 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1168 can transit to different access model. */
1169 if ((offset + 10) > sec->size ||
1170 (type != 0x8d && type != 0x04))
1171 return FALSE;
1172
1173 val = bfd_get_8 (abfd, contents + offset - 1);
1174 if (type == 0x04)
1175 {
1176 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1177 if (offset < 3)
1178 return FALSE;
1179
1180 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1181 return FALSE;
1182
1183 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1184 return FALSE;
1185 }
1186 else
1187 {
1188 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1189 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1190 return FALSE;
1191
1192 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1193 return FALSE;
1194 }
1195 }
1196 else
1197 {
1198 /* Check transition from LD access model. Only
1199 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1200 can transit to different access model. */
1201 if (type != 0x8d || (offset + 9) > sec->size)
1202 return FALSE;
1203
1204 val = bfd_get_8 (abfd, contents + offset - 1);
1205 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1206 return FALSE;
1207 }
1208
1209 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1210 return FALSE;
1211
1212 r_symndx = ELF32_R_SYM (rel[1].r_info);
1213 if (r_symndx < symtab_hdr->sh_info)
1214 return FALSE;
1215
1216 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1217 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1218 may be versioned. */
142411ca
L		 1219 return (h != NULL
1220 && h->root.root.string != NULL
1221 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1222 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1223 && (strncmp (h->root.root.string, "___tls_get_addr",
1224 15) == 0));
142411ca
L		 1225
1226 case R_386_TLS_IE:
1227 /* Check transition from IE access model:
1228 movl foo@indntpoff(%rip), %eax
1229 movl foo@indntpoff(%rip), %reg
1230 addl foo@indntpoff(%rip), %reg
1231 */
1232
1233 if (offset < 1 || (offset + 4) > sec->size)
1234 return FALSE;
1235
1236 /* Check "movl foo@tpoff(%rip), %eax" first. */
1237 val = bfd_get_8 (abfd, contents + offset - 1);
1238 if (val == 0xa1)
1239 return TRUE;
1240
1241 if (offset < 2)
1242 return FALSE;
1243
1244 /* Check movl|addl foo@tpoff(%rip), %reg. */
1245 type = bfd_get_8 (abfd, contents + offset - 2);
1246 return ((type == 0x8b || type == 0x03)
1247 && (val & 0xc7) == 0x05);
1248
1249 case R_386_TLS_GOTIE:
1250 case R_386_TLS_IE_32:
1251 /* Check transition from {IE_32,GOTIE} access model:
1252 subl foo@{tpoff,gontoff}(%reg1), %reg2
1253 movl foo@{tpoff,gontoff}(%reg1), %reg2
1254 addl foo@{tpoff,gontoff}(%reg1), %reg2
1255 */
1256
1257 if (offset < 2 || (offset + 4) > sec->size)
1258 return FALSE;
1259
1260 val = bfd_get_8 (abfd, contents + offset - 1);
1261 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1262 return FALSE;
1263
1264 type = bfd_get_8 (abfd, contents + offset - 2);
1265 return type == 0x8b || type == 0x2b || type == 0x03;
1266
1267 case R_386_TLS_GOTDESC:
1268 /* Check transition from GDesc access model:
1269 leal x@tlsdesc(%ebx), %eax
1270
1271 Make sure it's a leal adding ebx to a 32-bit offset
1272 into any register, although it's probably almost always
1273 going to be eax. */
1274
1275 if (offset < 2 || (offset + 4) > sec->size)
1276 return FALSE;
1277
1278 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1279 return FALSE;
1280
1281 val = bfd_get_8 (abfd, contents + offset - 1);
1282 return (val & 0xc7) == 0x83;
1283
1284 case R_386_TLS_DESC_CALL:
1285 /* Check transition from GDesc access model:
1286 call *x@tlsdesc(%rax)
1287 */
1288 if (offset + 2 <= sec->size)
1289 {
1290 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1291 static const unsigned char call[] = { 0xff, 0x10 };
1292 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1293 }
1294
1295 return FALSE;
1296
1297 default:
1298 abort ();
1299 }
1300}
1301
1302/* Return TRUE if the TLS access transition is OK or no transition
1303 will be performed. Update R_TYPE if there is a transition. */
1304
1305static bfd_boolean
1306elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1307 asection *sec, bfd_byte *contents,
1308 Elf_Internal_Shdr *symtab_hdr,
1309 struct elf_link_hash_entry **sym_hashes,
1310 unsigned int *r_type, int tls_type,
1311 const Elf_Internal_Rela *rel,
1312 const Elf_Internal_Rela *relend,
4c544807
L		 1313 struct elf_link_hash_entry *h,
1314 unsigned long r_symndx)
142411ca
L		 1315{
1316 unsigned int from_type = *r_type;
1317 unsigned int to_type = from_type;
1318 bfd_boolean check = TRUE;
1319
bb1cb422
L		 1320 /* Skip TLS transition for functions. */
1321 if (h != NULL
1322 && (h->type == STT_FUNC
1323 || h->type == STT_GNU_IFUNC))
1324 return TRUE;
1325
142411ca 1326 switch (from_type)
13ae64f3
JJ		 1327 {
1328 case R_386_TLS_GD:
67a4f2b7
AO		 1329 case R_386_TLS_GOTDESC:
1330 case R_386_TLS_DESC_CALL:
13ae64f3 1331 case R_386_TLS_IE_32:
37e55690
JJ		 1332 case R_386_TLS_IE:
1333 case R_386_TLS_GOTIE:
1d85728f 1334 if (info->executable)
142411ca
L		 1335 {
1336 if (h == NULL)
1337 to_type = R_386_TLS_LE_32;
1338 else if (from_type != R_386_TLS_IE
1339 && from_type != R_386_TLS_GOTIE)
1340 to_type = R_386_TLS_IE_32;
1341 }
1342
1343 /* When we are called from elf_i386_relocate_section, CONTENTS
1344 isn't NULL and there may be additional transitions based on
1345 TLS_TYPE. */
1346 if (contents != NULL)
1347 {
1348 unsigned int new_to_type = to_type;
1349
1d85728f 1350 if (info->executable
142411ca
L		 1351 && h != NULL
1352 && h->dynindx == -1
1353 && (tls_type & GOT_TLS_IE))
1354 new_to_type = R_386_TLS_LE_32;
1355
1356 if (to_type == R_386_TLS_GD
1357 || to_type == R_386_TLS_GOTDESC
1358 || to_type == R_386_TLS_DESC_CALL)
1359 {
1360 if (tls_type == GOT_TLS_IE_POS)
1361 new_to_type = R_386_TLS_GOTIE;
1362 else if (tls_type & GOT_TLS_IE)
1363 new_to_type = R_386_TLS_IE_32;
1364 }
1365
1366 /* We checked the transition before when we were called from
1367 elf_i386_check_relocs. We only want to check the new
1368 transition which hasn't been checked before. */
1369 check = new_to_type != to_type && from_type == to_type;
1370 to_type = new_to_type;
1371 }
1372
1373 break;
1374
13ae64f3 1375 case R_386_TLS_LDM:
1d85728f 1376 if (info->executable)
142411ca
L		 1377 to_type = R_386_TLS_LE_32;
1378 break;
1379
1380 default:
1381 return TRUE;
1382 }
1383
1384 /* Return TRUE if there is no transition. */
1385 if (from_type == to_type)
1386 return TRUE;
1387
1388 /* Check if the transition can be performed. */
1389 if (check
1390 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1391 symtab_hdr, sym_hashes,
1392 from_type, rel, relend))
1393 {
2f629d23 1394 reloc_howto_type *from, *to;
4c544807 1395 const char *name;
142411ca
L		 1396
1397 from = elf_i386_rtype_to_howto (abfd, from_type);
1398 to = elf_i386_rtype_to_howto (abfd, to_type);
1399
4c544807
L		 1400 if (h)
1401 name = h->root.root.string;
1402 else
1403 {
4c544807 1404 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1405
4c544807 1406 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1407 if (htab == NULL)
1408 name = "*unknown*";
1409 else
1410 {
1411 Elf_Internal_Sym *isym;
1412
1413 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1414 abfd, r_symndx);
1415 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1416 }
4c544807
L		 1417 }
1418
142411ca
L		 1419 (*_bfd_error_handler)
1420 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1421 "in section `%A' failed"),
4c544807 1422 abfd, sec, from->name, to->name, name,
142411ca
L		 1423 (unsigned long) rel->r_offset);
1424 bfd_set_error (bfd_error_bad_value);
1425 return FALSE;
13ae64f3
JJ		 1426 }
1427
142411ca
L		 1428 *r_type = to_type;
1429 return TRUE;
13ae64f3
JJ		 1430}
1431
252b5132 1432/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1433 calculate needed space in the global offset table, procedure linkage
1434 table, and dynamic reloc sections. */
252b5132 1435
b34976b6 1436static bfd_boolean
55fd94b0
AM		 1437elf_i386_check_relocs (bfd *abfd,
1438 struct bfd_link_info *info,
1439 asection *sec,
1440 const Elf_Internal_Rela *relocs)
252b5132 1441{
6725bdbf 1442 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1443 Elf_Internal_Shdr *symtab_hdr;
1444 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1445 const Elf_Internal_Rela *rel;
1446 const Elf_Internal_Rela *rel_end;
252b5132 1447 asection *sreloc;
dd7e64d4 1448 bfd_boolean use_plt_got;
252b5132 1449
1049f94e 1450 if (info->relocatable)
b34976b6 1451 return TRUE;
252b5132 1452
0ffa91dd
NC		 1453 BFD_ASSERT (is_i386_elf (abfd));
1454
6725bdbf 1455 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1456 if (htab == NULL)
1457 return FALSE;
1458
dd7e64d4
L		 1459 use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
1460 && (get_elf_i386_backend_data (abfd)
1461 == &elf_i386_arch_bed));
1462
0ffa91dd 1463 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1464 sym_hashes = elf_sym_hashes (abfd);
252b5132 1465
252b5132
RH		 1466 sreloc = NULL;
1467
1468 rel_end = relocs + sec->reloc_count;
1469 for (rel = relocs; rel < rel_end; rel++)
1470 {
13ae64f3 1471 unsigned int r_type;
252b5132
RH		 1472 unsigned long r_symndx;
1473 struct elf_link_hash_entry *h;
4c544807
L		 1474 Elf_Internal_Sym *isym;
1475 const char *name;
06a6a421 1476 bfd_boolean size_reloc;
252b5132
RH		 1477
1478 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1479 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1480
d9bc7a44 1481 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1482 {
d003868e
AM		 1483 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1484 abfd,
8f615d07 1485 r_symndx);
b34976b6 1486 return FALSE;
f5f31454
L		 1487 }
1488
252b5132 1489 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1490 {
1491 /* A local symbol. */
c2e61a4e
L		 1492 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1493 abfd, r_symndx);
1494 if (isym == NULL)
1495 return FALSE;
c25bc9fc
L		 1496
1497 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1498 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1499 {
9fff0c39 1500 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1501 if (h == NULL)
c2e61a4e 1502 return FALSE;
6bbec505 1503
c25bc9fc
L		 1504 /* Fake a STT_GNU_IFUNC symbol. */
1505 h->type = STT_GNU_IFUNC;
1506 h->def_regular = 1;
1507 h->ref_regular = 1;
1508 h->forced_local = 1;
1509 h->root.type = bfd_link_hash_defined;
1510 }
1511 else
1512 h = NULL;
1513 }
252b5132 1514 else
71cb9464 1515 {
4c544807 1516 isym = NULL;
71cb9464
L		 1517 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1518 while (h->root.type == bfd_link_hash_indirect
1519 || h->root.type == bfd_link_hash_warning)
1520 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1521 }
cbe950e9 1522
c25bc9fc
L		 1523 if (h != NULL)
1524 {
cbe950e9
L		 1525 /* Create the ifunc sections for static executables. If we
1526 never see an indirect function symbol nor we are building
1527 a static executable, those sections will be empty and
1528 won't appear in output. */
1529 switch (r_type)
1530 {
1531 default:
1532 break;
1533
1534 case R_386_32:
1535 case R_386_PC32:
1536 case R_386_PLT32:
1537 case R_386_GOT32:
1538 case R_386_GOTOFF:
9d4057ee
AM		 1539 if (htab->elf.dynobj == NULL)
1540 htab->elf.dynobj = abfd;
1541 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1542 return FALSE;
cbe950e9
L		 1543 break;
1544 }
1545
ad1e85de
L		 1546 /* It is referenced by a non-shared object. */
1547 h->ref_regular = 1;
61315175 1548 h->root.non_ir_ref = 1;
71cb9464 1549 }
252b5132 1550
142411ca
L		 1551 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1552 symtab_hdr, sym_hashes,
1553 &r_type, GOT_UNKNOWN,
23209a78 1554 rel, rel_end, h, r_symndx))
c2e61a4e 1555 return FALSE;
13ae64f3
JJ		 1556
1557 switch (r_type)
252b5132 1558 {
37e55690
JJ		 1559 case R_386_TLS_LDM:
1560 htab->tls_ldm_got.refcount += 1;
1561 goto create_got;
1562
1563 case R_386_PLT32:
1564 /* This symbol requires a procedure linkage table entry. We
1565 actually build the entry in adjust_dynamic_symbol,
1566 because this might be a case of linking PIC code which is
1567 never referenced by a dynamic object, in which case we
1568 don't need to generate a procedure linkage table entry
1569 after all. */
1570
1571 /* If this is a local symbol, we resolve it directly without
1572 creating a procedure linkage table entry. */
1573 if (h == NULL)
1574 continue;
1575
f5385ebf 1576 h->needs_plt = 1;
37e55690
JJ		 1577 h->plt.refcount += 1;
1578 break;
1579
6a3e1bae 1580 case R_386_SIZE32:
06a6a421 1581 size_reloc = TRUE;
6a3e1bae
L		 1582 goto do_size;
1583
13ae64f3 1584 case R_386_TLS_IE_32:
37e55690
JJ		 1585 case R_386_TLS_IE:
1586 case R_386_TLS_GOTIE:
1d85728f 1587 if (!info->executable)
13ae64f3 1588 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1589 /* Fall through */
1590
252b5132 1591 case R_386_GOT32:
13ae64f3 1592 case R_386_TLS_GD:
67a4f2b7
AO		 1593 case R_386_TLS_GOTDESC:
1594 case R_386_TLS_DESC_CALL:
252b5132 1595 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1596 {
1597 int tls_type, old_tls_type;
1598
1599 switch (r_type)
1600 {
1601 default:
1602 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1603 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1604 case R_386_TLS_GOTDESC:
1605 case R_386_TLS_DESC_CALL:
1606 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1607 case R_386_TLS_IE_32:
1608 if (ELF32_R_TYPE (rel->r_info) == r_type)
1609 tls_type = GOT_TLS_IE_NEG;
1610 else
ebcfb3c0
JJ		 1611 /* If this is a GD->IE transition, we may use either of
1612 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1613 tls_type = GOT_TLS_IE;
1614 break;
1615 case R_386_TLS_IE:
1616 case R_386_TLS_GOTIE:
1617 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1618 }
1619
1620 if (h != NULL)
1621 {
1622 h->got.refcount += 1;
1623 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1624 }
1625 else
1626 {
1627 bfd_signed_vma *local_got_refcounts;
1628
1629 /* This is a global offset table entry for a local symbol. */
1630 local_got_refcounts = elf_local_got_refcounts (abfd);
1631 if (local_got_refcounts == NULL)
1632 {
1633 bfd_size_type size;
1634
1635 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1636 size *= (sizeof (bfd_signed_vma)
1637 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1638 local_got_refcounts = (bfd_signed_vma *)
1639 bfd_zalloc (abfd, size);
13ae64f3 1640 if (local_got_refcounts == NULL)
c2e61a4e 1641 return FALSE;
13ae64f3 1642 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1643 elf_i386_local_tlsdesc_gotent (abfd)
1644 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1645 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1646 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1647 }
1648 local_got_refcounts[r_symndx] += 1;
1649 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1650 }
1651
37e55690
JJ		 1652 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1653 tls_type |= old_tls_type;
13ae64f3
JJ		 1654 /* If a TLS symbol is accessed using IE at least once,
1655 there is no point to use dynamic model for it. */
ebcfb3c0 1656 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1657 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1658 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1659 {
67a4f2b7 1660 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1661 tls_type = old_tls_type;
67a4f2b7
AO		 1662 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1663 && GOT_TLS_GD_ANY_P (tls_type))
1664 tls_type |= old_tls_type;
13ae64f3
JJ		 1665 else
1666 {
09a24cbf 1667 if (h)
4c544807
L		 1668 name = h->root.root.string;
1669 else
1670 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1671 NULL);
13ae64f3 1672 (*_bfd_error_handler)
d003868e 1673 (_("%B: `%s' accessed both as normal and "
55fd94b0 1674 "thread local symbol"),
4c544807 1675 abfd, name);
68c4a57e 1676 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1677 return FALSE;
13ae64f3
JJ		 1678 }
1679 }
1680
1681 if (old_tls_type != tls_type)
1682 {
1683 if (h != NULL)
1684 elf_i386_hash_entry (h)->tls_type = tls_type;
1685 else
1686 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1687 }
1688 }
0ac8d2ca
AM		 1689 /* Fall through */
1690
1691 case R_386_GOTOFF:
1692 case R_386_GOTPC:
13ae64f3 1693 create_got:
6de2ae4a 1694 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1695 {
1696 if (htab->elf.dynobj == NULL)
1697 htab->elf.dynobj = abfd;
6de2ae4a 1698 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1699 return FALSE;
0ac8d2ca 1700 }
37e55690
JJ		 1701 if (r_type != R_386_TLS_IE)
1702 break;
1703 /* Fall through */
252b5132 1704
37e55690
JJ		 1705 case R_386_TLS_LE_32:
1706 case R_386_TLS_LE:
1d85728f 1707 if (info->executable)
37e55690 1708 break;
bffbf940 1709 info->flags |= DF_STATIC_TLS;
b34976b6 1710 /* Fall through */
252b5132
RH		 1711
1712 case R_386_32:
1713 case R_386_PC32:
710ab287 1714 if (h != NULL && info->executable)
6725bdbf 1715 {
12d0ee4a 1716 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1717 need a copy reloc. We can't check reliably at this
1718 stage whether the section is read-only, as input
1719 sections have not yet been mapped to output sections.
1720 Tentatively set the flag for now, and correct in
1721 adjust_dynamic_symbol. */
f5385ebf 1722 h->non_got_ref = 1;
12d0ee4a
AM		 1723
1724 /* We may need a .plt entry if the function this reloc
1725 refers to is in a shared lib. */
51b64d56 1726 h->plt.refcount += 1;
c6585bbb 1727 if (r_type != R_386_PC32)
f5385ebf 1728 h->pointer_equality_needed = 1;
6725bdbf 1729 }
7843f00e 1730
06a6a421 1731 size_reloc = FALSE;
6a3e1bae 1732do_size:
252b5132 1733 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1734 against a global symbol, or a non PC relative reloc
1735 against a local symbol, then we need to copy the reloc
1736 into the shared library. However, if we are linking with
1737 -Bsymbolic, we do not need to copy a reloc against a
1738 global symbol which is defined in an object we are
1739 including in the link (i.e., DEF_REGULAR is set). At
1740 this point we have not seen all the input files, so it is
1741 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1742 later (it is never cleared). In case of a weak definition,
1743 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1744 a shared library. We account for that possibility below by
1f655a09
L		 1745 storing information in the relocs_copied field of the hash
1746 table entry. A similar situation occurs when creating
1747 shared libraries and symbol visibility changes render the
12d0ee4a 1748 symbol local.
56882138 1749
12d0ee4a
AM		 1750 If on the other hand, we are creating an executable, we
1751 may need to keep relocations for symbols satisfied by a
1752 dynamic library if we manage to avoid copy relocs for the
1753 symbol. */
1754 if ((info->shared
1755 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1756 && (r_type != R_386_PC32
12d0ee4a 1757 || (h != NULL
55255dae 1758 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1759 || h->root.type == bfd_link_hash_defweak
f5385ebf 1760 || !h->def_regular))))
a23b6845
AM		 1761 || (ELIMINATE_COPY_RELOCS
1762 && !info->shared
12d0ee4a
AM		 1763 && (sec->flags & SEC_ALLOC) != 0
1764 && h != NULL
12d0ee4a 1765 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1766 || !h->def_regular)))
252b5132 1767 {
e03a8ed8
L		 1768 struct elf_dyn_relocs *p;
1769 struct elf_dyn_relocs **head;
ec338859 1770
12d0ee4a
AM		 1771 /* We must copy these reloc types into the output file.
1772 Create a reloc section in dynobj and make room for
1773 this reloc. */
252b5132
RH		 1774 if (sreloc == NULL)
1775 {
0ac8d2ca
AM		 1776 if (htab->elf.dynobj == NULL)
1777 htab->elf.dynobj = abfd;
1778
83bac4b0
NC		 1779 sreloc = _bfd_elf_make_dynamic_reloc_section
1780 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1781
252b5132 1782 if (sreloc == NULL)
c2e61a4e 1783 return FALSE;
252b5132
RH		 1784 }
1785
0c715baa
AM		 1786 /* If this is a global symbol, we count the number of
1787 relocations we need for this symbol. */
1788 if (h != NULL)
252b5132 1789 {
ec338859 1790 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1791 }
1792 else
1793 {
ec338859
AM		 1794 /* Track dynamic relocs needed for local syms too.
1795 We really need local syms available to do this
1796 easily. Oh well. */
87d72d41 1797 void **vpp;
ec338859 1798 asection *s;
87d72d41
AM		 1799
1800 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1801 abfd, r_symndx);
1802 if (isym == NULL)
1803 return FALSE;
1804
1805 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1806 if (s == NULL)
87d72d41 1807 s = sec;
ec338859 1808
e81d3500 1809 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1810 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1811 }
1812
1813 p = *head;
1814 if (p == NULL || p->sec != sec)
1815 {
1816 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1817 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1818 amt);
ec338859 1819 if (p == NULL)
c2e61a4e 1820 return FALSE;
ec338859
AM		 1821 p->next = *head;
1822 *head = p;
1823 p->sec = sec;
1824 p->count = 0;
1825 p->pc_count = 0;
252b5132 1826 }
ec338859
AM		 1827
1828 p->count += 1;
06a6a421
L		 1829 /* Count size relocation as PC-relative relocation. */
1830 if (r_type == R_386_PC32 || size_reloc)
ec338859 1831 p->pc_count += 1;
252b5132 1832 }
252b5132
RH		 1833 break;
1834
1835 /* This relocation describes the C++ object vtable hierarchy.
1836 Reconstruct it for later use during GC. */
1837 case R_386_GNU_VTINHERIT:
d17e0c6e 1838 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1839 return FALSE;
252b5132
RH		 1840 break;
1841
1842 /* This relocation describes which C++ vtable entries are actually
1843 used. Record for later use during GC. */
1844 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1845 BFD_ASSERT (h != NULL);
1846 if (h != NULL
1847 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1848 return FALSE;
252b5132
RH		 1849 break;
1850
1851 default:
1852 break;
1853 }
dd7e64d4
L		 1854
1855 if (use_plt_got
1856 && h != NULL
1857 && h->plt.refcount > 0
1858 && h->got.refcount > 0
1859 && htab->plt_got == NULL)
1860 {
1861 /* Create the GOT procedure linkage table. */
1862 unsigned int plt_got_align;
1863 const struct elf_backend_data *bed;
1864
1865 bed = get_elf_backend_data (info->output_bfd);
1866 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
1867 && (sizeof (elf_i386_got_plt_entry)
1868 == sizeof (elf_i386_pic_got_plt_entry)));
1869 plt_got_align = 3;
1870
1871 if (htab->elf.dynobj == NULL)
1872 htab->elf.dynobj = abfd;
1873 htab->plt_got
1874 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
1875 ".plt.got",
1876 (bed->dynamic_sec_flags
1877 | SEC_ALLOC
1878 | SEC_CODE
1879 | SEC_LOAD
1880 | SEC_READONLY));
1881 if (htab->plt_got == NULL
1882 || !bfd_set_section_alignment (htab->elf.dynobj,
1883 htab->plt_got,
1884 plt_got_align))
1885 return FALSE;
1886 }
252b5132
RH		 1887 }
1888
b34976b6 1889 return TRUE;
252b5132
RH		 1890}
1891
1892/* Return the section that should be marked against GC for a given
1893 relocation. */
1894
1895static asection *
55fd94b0 1896elf_i386_gc_mark_hook (asection *sec,
07adf181 1897 struct bfd_link_info *info,
55fd94b0
AM		 1898 Elf_Internal_Rela *rel,
1899 struct elf_link_hash_entry *h,
1900 Elf_Internal_Sym *sym)
252b5132
RH		 1901{
1902 if (h != NULL)
07adf181
AM		 1903 switch (ELF32_R_TYPE (rel->r_info))
1904 {
1905 case R_386_GNU_VTINHERIT:
1906 case R_386_GNU_VTENTRY:
1907 return NULL;
1908 }
1909
1910 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1911}
1912
1913/* Update the got entry reference counts for the section being removed. */
1914
b34976b6 1915static bfd_boolean
55fd94b0
AM		 1916elf_i386_gc_sweep_hook (bfd *abfd,
1917 struct bfd_link_info *info,
1918 asection *sec,
1919 const Elf_Internal_Rela *relocs)
252b5132 1920{
4dfe6ac6 1921 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1922 Elf_Internal_Shdr *symtab_hdr;
1923 struct elf_link_hash_entry **sym_hashes;
1924 bfd_signed_vma *local_got_refcounts;
1925 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1926
7dda2462
TG		 1927 if (info->relocatable)
1928 return TRUE;
1929
4dfe6ac6
NC		 1930 htab = elf_i386_hash_table (info);
1931 if (htab == NULL)
1932 return FALSE;
1933
ec338859 1934 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1935
0ffa91dd 1936 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1937 sym_hashes = elf_sym_hashes (abfd);
1938 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1939
1940 relend = relocs + sec->reloc_count;
1941 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1942 {
1943 unsigned long r_symndx;
1944 unsigned int r_type;
1945 struct elf_link_hash_entry *h = NULL;
37e55690 1946
26e41594
AM		 1947 r_symndx = ELF32_R_SYM (rel->r_info);
1948 if (r_symndx >= symtab_hdr->sh_info)
1949 {
26e41594 1950 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1951 while (h->root.type == bfd_link_hash_indirect
1952 || h->root.type == bfd_link_hash_warning)
1953 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1954 }
bb1cb422
L		 1955 else
1956 {
1957 /* A local symbol. */
1958 Elf_Internal_Sym *isym;
1959
1960 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1961 abfd, r_symndx);
1962
1963 /* Check relocation against local STT_GNU_IFUNC symbol. */
1964 if (isym != NULL
1965 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1966 {
1967 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1968 if (h == NULL)
1969 abort ();
1970 }
1971 }
0c715baa 1972
3db2e7dd
L		 1973 if (h)
1974 {
1975 struct elf_i386_link_hash_entry *eh;
1976 struct elf_dyn_relocs **pp;
1977 struct elf_dyn_relocs *p;
1978
1979 eh = (struct elf_i386_link_hash_entry *) h;
1980 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1981 if (p->sec == sec)
1982 {
1983 /* Everything must go for SEC. */
1984 *pp = p->next;
1985 break;
1986 }
1987 }
1988
26e41594 1989 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 1990 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1991 symtab_hdr, sym_hashes,
1992 &r_type, GOT_UNKNOWN,
23209a78 1993 rel, relend, h, r_symndx))
142411ca
L		 1994 return FALSE;
1995
26e41594
AM		 1996 switch (r_type)
1997 {
1998 case R_386_TLS_LDM:
4dfe6ac6
NC		 1999 if (htab->tls_ldm_got.refcount > 0)
2000 htab->tls_ldm_got.refcount -= 1;
26e41594 2001 break;
0c715baa 2002
26e41594 2003 case R_386_TLS_GD:
67a4f2b7
AO		 2004 case R_386_TLS_GOTDESC:
2005 case R_386_TLS_DESC_CALL:
26e41594
AM		 2006 case R_386_TLS_IE_32:
2007 case R_386_TLS_IE:
2008 case R_386_TLS_GOTIE:
2009 case R_386_GOT32:
2010 if (h != NULL)
2011 {
2012 if (h->got.refcount > 0)
2013 h->got.refcount -= 1;
bb1cb422
L		 2014 if (h->type == STT_GNU_IFUNC)
2015 {
2016 if (h->plt.refcount > 0)
2017 h->plt.refcount -= 1;
2018 }
26e41594
AM		 2019 }
2020 else if (local_got_refcounts != NULL)
2021 {
2022 if (local_got_refcounts[r_symndx] > 0)
2023 local_got_refcounts[r_symndx] -= 1;
2024 }
2025 break;
0c715baa 2026
26e41594
AM		 2027 case R_386_32:
2028 case R_386_PC32:
1788fc08 2029 case R_386_SIZE32:
3db2e7dd
L		 2030 if (info->shared
2031 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 2032 break;
2033 /* Fall through */
6725bdbf 2034
26e41594
AM		 2035 case R_386_PLT32:
2036 if (h != NULL)
2037 {
2038 if (h->plt.refcount > 0)
2039 h->plt.refcount -= 1;
2040 }
2041 break;
dd5724d5 2042
bb1cb422
L		 2043 case R_386_GOTOFF:
2044 if (h != NULL && h->type == STT_GNU_IFUNC)
2045 {
2046 if (h->got.refcount > 0)
2047 h->got.refcount -= 1;
2048 if (h->plt.refcount > 0)
2049 h->plt.refcount -= 1;
2050 }
2051 break;
2052
26e41594
AM		 2053 default:
2054 break;
2055 }
2056 }
252b5132 2057
b34976b6 2058 return TRUE;
252b5132
RH		 2059}
2060
2061/* Adjust a symbol defined by a dynamic object and referenced by a
2062 regular object. The current definition is in some section of the
2063 dynamic object, but we're not including those sections. We have to
2064 change the definition to something the rest of the link can
2065 understand. */
2066
b34976b6 2067static bfd_boolean
55fd94b0
AM		 2068elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2069 struct elf_link_hash_entry *h)
252b5132 2070{
6725bdbf 2071 struct elf_i386_link_hash_table *htab;
252b5132 2072 asection *s;
5ca5bb35
L		 2073 struct elf_i386_link_hash_entry *eh;
2074 struct elf_dyn_relocs *p;
252b5132 2075
cbe950e9
L		 2076 /* STT_GNU_IFUNC symbol must go through PLT. */
2077 if (h->type == STT_GNU_IFUNC)
2078 {
73bcf233
L		 2079 /* All local STT_GNU_IFUNC references must be treate as local
2080 calls via local PLT. */
5ca5bb35
L		 2081 if (h->ref_regular
2082 && SYMBOL_CALLS_LOCAL (info, h))
2083 {
73bcf233 2084 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2085 struct elf_dyn_relocs **pp;
2086
2087 eh = (struct elf_i386_link_hash_entry *) h;
2088 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2089 {
2090 pc_count += p->pc_count;
2091 p->count -= p->pc_count;
2092 p->pc_count = 0;
73bcf233 2093 count += p->count;
5ca5bb35
L		 2094 if (p->count == 0)
2095 *pp = p->next;
2096 else
2097 pp = &p->next;
2098 }
2099
73bcf233 2100 if (pc_count || count)
5ca5bb35
L		 2101 {
2102 h->needs_plt = 1;
5ca5bb35 2103 h->non_got_ref = 1;
a5479e5f
L		 2104 if (h->plt.refcount <= 0)
2105 h->plt.refcount = 1;
2106 else
2107 h->plt.refcount += 1;
5ca5bb35
L		 2108 }
2109 }
2110
cbe950e9
L		 2111 if (h->plt.refcount <= 0)
2112 {
2113 h->plt.offset = (bfd_vma) -1;
2114 h->needs_plt = 0;
2115 }
2116 return TRUE;
2117 }
2118
252b5132
RH		 2119 /* If this is a function, put it in the procedure linkage table. We
2120 will fill in the contents of the procedure linkage table later,
2121 when we know the address of the .got section. */
2122 if (h->type == STT_FUNC
f5385ebf 2123 || h->needs_plt)
252b5132 2124 {
6725bdbf 2125 if (h->plt.refcount <= 0
9c7a29a3
AM		 2126 || SYMBOL_CALLS_LOCAL (info, h)
2127 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2128 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2129 {
2130 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2131 file, but the symbol was never referred to by a dynamic
2132 object, or if all references were garbage collected. In
2133 such a case, we don't actually need to build a procedure
2134 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2135 h->plt.offset = (bfd_vma) -1;
f5385ebf 2136 h->needs_plt = 0;
252b5132
RH		 2137 }
2138
b34976b6 2139 return TRUE;
252b5132 2140 }
6725bdbf
AM		 2141 else
2142 /* It's possible that we incorrectly decided a .plt reloc was
2143 needed for an R_386_PC32 reloc to a non-function sym in
2144 check_relocs. We can't decide accurately between function and
2145 non-function syms in check-relocs; Objects loaded later in
2146 the link may change h->type. So fix it now. */
bbd7ec4a 2147 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2148
2149 /* If this is a weak symbol, and there is a real definition, the
2150 processor independent code will have arranged for us to see the
2151 real definition first, and we can just use the same value. */
f6e332e6 2152 if (h->u.weakdef != NULL)
252b5132 2153 {
f6e332e6
AM		 2154 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2155 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2156 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2157 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2158 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2159 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2160 return TRUE;
252b5132
RH		 2161 }
2162
2163 /* This is a reference to a symbol defined by a dynamic object which
2164 is not a function. */
2165
2166 /* If we are creating a shared library, we must presume that the
2167 only references to the symbol are via the global offset table.
2168 For such cases we need not do anything here; the relocations will
2169 be handled correctly by relocate_section. */
2170 if (info->shared)
b34976b6 2171 return TRUE;
252b5132 2172
7843f00e
ILT		 2173 /* If there are no references to this symbol that do not use the
2174 GOT, we don't need to generate a copy reloc. */
f5385ebf 2175 if (!h->non_got_ref)
b34976b6 2176 return TRUE;
7843f00e 2177
8bd621d8
AM		 2178 /* If -z nocopyreloc was given, we won't generate them either. */
2179 if (info->nocopyreloc)
2180 {
f5385ebf 2181 h->non_got_ref = 0;
b34976b6 2182 return TRUE;
8bd621d8
AM		 2183 }
2184
643796e3 2185 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2186 if (htab == NULL)
2187 return FALSE;
643796e3
DJ		 2188
2189 /* If there aren't any dynamic relocs in read-only sections, then
2190 we can keep the dynamic relocs and avoid the copy reloc. This
2191 doesn't work on VxWorks, where we can not have dynamic relocations
2192 (other than copy and jump slot relocations) in an executable. */
23209a78
RM		 2193 if (ELIMINATE_COPY_RELOCS
2194 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2195 {
a23b6845
AM		 2196 eh = (struct elf_i386_link_hash_entry *) h;
2197 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2198 {
2199 s = p->sec->output_section;
2200 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2201 break;
2202 }
2203
a23b6845
AM		 2204 if (p == NULL)
2205 {
f5385ebf 2206 h->non_got_ref = 0;
a23b6845
AM		 2207 return TRUE;
2208 }
ebe50bae
AM		 2209 }
2210
252b5132
RH		 2211 /* We must allocate the symbol in our .dynbss section, which will
2212 become part of the .bss section of the executable. There will be
2213 an entry for this symbol in the .dynsym section. The dynamic
2214 object will contain position independent code, so all references
2215 from the dynamic object to this symbol will go through the global
2216 offset table. The dynamic linker will use the .dynsym entry to
2217 determine the address it must put in the global offset table, so
2218 both the dynamic object and the regular object will refer to the
2219 same memory location for the variable. */
2220
252b5132
RH		 2221 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2222 copy the initial value out of the dynamic object and into the
0ac8d2ca 2223 runtime process image. */
1d7e9d18 2224 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2225 {
eea6121a 2226 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2227 h->needs_copy = 1;
252b5132
RH		 2228 }
2229
0ac8d2ca 2230 s = htab->sdynbss;
252b5132 2231
027297b7 2232 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 2233}
2234
6725bdbf 2235/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2236 dynamic relocs. */
6725bdbf 2237
b34976b6 2238static bfd_boolean
eb4ff4d6 2239elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2240{
2241 struct bfd_link_info *info;
2242 struct elf_i386_link_hash_table *htab;
5a15f56f 2243 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2244 struct elf_dyn_relocs *p;
25e762b9 2245 unsigned plt_entry_size;
6725bdbf 2246
e92d460e 2247 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2248 return TRUE;
6725bdbf 2249
cbe950e9 2250 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2251
6725bdbf
AM		 2252 info = (struct bfd_link_info *) inf;
2253 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2254 if (htab == NULL)
2255 return FALSE;
6725bdbf 2256
25e762b9
RM		 2257 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2258
dd7e64d4
L		 2259 /* We can't use the GOT PLT if pointer equality is needed since
2260 finish_dynamic_symbol won't clear symbol value and the dynamic
2261 linker won't update the GOT slot. We will get into an infinite
2262 loop at run-time. */
2263 if (htab->plt_got != NULL
2264 && h->type != STT_GNU_IFUNC
2265 && !h->pointer_equality_needed
2266 && h->plt.refcount > 0
2267 && h->got.refcount > 0)
2268 {
2269 /* Don't use the regular PLT if there are both GOT and GOTPLT
2270 reloctions. */
2271 h->plt.offset = (bfd_vma) -1;
2272
2273 /* Use the GOT PLT. */
2274 eh->plt_got.refcount = 1;
2275 }
2276
cbe950e9
L		 2277 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2278 here if it is defined and referenced in a non-shared object. */
2279 if (h->type == STT_GNU_IFUNC
2280 && h->def_regular)
25e762b9 2281 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
7b70956d
WN		 2282 plt_entry_size,
2283 plt_entry_size, 4);
cbe950e9 2284 else if (htab->elf.dynamic_sections_created
dd7e64d4 2285 && (h->plt.refcount > 0 || eh->plt_got.refcount > 0))
6725bdbf 2286 {
dd7e64d4
L		 2287 bfd_boolean use_plt_got = eh->plt_got.refcount > 0;
2288
5a15f56f
AM		 2289 /* Make sure this symbol is output as a dynamic symbol.
2290 Undefined weak syms won't yet be marked as dynamic. */
2291 if (h->dynindx == -1
f5385ebf 2292 && !h->forced_local)
5a15f56f 2293 {
c152c796 2294 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2295 return FALSE;
5a15f56f
AM		 2296 }
2297
4e795f50
AM		 2298 if (info->shared
2299 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2300 {
6de2ae4a 2301 asection *s = htab->elf.splt;
dd7e64d4 2302 asection *got_s = htab->plt_got;
6725bdbf 2303
ced53ee5
AM		 2304 /* If this is the first .plt entry, make room for the special
2305 first entry. */
eea6121a 2306 if (s->size == 0)
bb81b736 2307 s->size = plt_entry_size;
6725bdbf 2308
dd7e64d4
L		 2309 if (use_plt_got)
2310 eh->plt_got.offset = got_s->size;
2311 else
2312 h->plt.offset = s->size;
6725bdbf 2313
ced53ee5
AM		 2314 /* If this symbol is not defined in a regular file, and we are
2315 not generating a shared library, then set the symbol to this
2316 location in the .plt. This is required to make function
2317 pointers compare as equal between the normal executable and
2318 the shared library. */
2319 if (! info->shared
f5385ebf 2320 && !h->def_regular)
ced53ee5 2321 {
dd7e64d4
L		 2322 if (use_plt_got)
2323 {
2324 /* We need to make a call to the entry of the GOT PLT
2325 instead of regular PLT entry. */
2326 h->root.u.def.section = got_s;
2327 h->root.u.def.value = eh->plt_got.offset;
2328 }
2329 else
2330 {
2331 h->root.u.def.section = s;
2332 h->root.u.def.value = h->plt.offset;
2333 }
ced53ee5 2334 }
6725bdbf 2335
ced53ee5 2336 /* Make room for this entry. */
dd7e64d4
L		 2337 if (use_plt_got)
2338 got_s->size += sizeof (elf_i386_got_plt_entry);
2339 else
2340 {
2341 s->size += plt_entry_size;
6725bdbf 2342
dd7e64d4
L		 2343 /* We also need to make an entry in the .got.plt section,
2344 which will be placed in the .got section by the linker
2345 script. */
2346 htab->elf.sgotplt->size += 4;
6725bdbf 2347
dd7e64d4
L		 2348 /* We also need to make an entry in the .rel.plt section. */
2349 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2350 htab->elf.srelplt->reloc_count++;
2351 }
eac338cf 2352
23209a78
RM		 2353 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2354 && !info->shared)
eac338cf
PB		 2355 {
2356 /* VxWorks has a second set of relocations for each PLT entry
2357 in executables. They go in a separate relocation section,
2358 which is processed by the kernel loader. */
2359
2360 /* There are two relocations for the initial PLT entry: an
2361 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2362 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2363
25e762b9 2364 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2365 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2366
2367 /* There are two extra relocations for each subsequent PLT entry:
2368 an R_386_32 relocation for the GOT entry, and an R_386_32
2369 relocation for the PLT entry. */
2370
2371 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2372 }
6725bdbf 2373 }
ced53ee5
AM		 2374 else
2375 {
51b64d56 2376 h->plt.offset = (bfd_vma) -1;
f5385ebf 2377 h->needs_plt = 0;
ced53ee5 2378 }
6725bdbf
AM		 2379 }
2380 else
2381 {
51b64d56 2382 h->plt.offset = (bfd_vma) -1;
f5385ebf 2383 h->needs_plt = 0;
6725bdbf
AM		 2384 }
2385
67a4f2b7
AO		 2386 eh->tlsdesc_got = (bfd_vma) -1;
2387
37e55690 2388 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2389 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2390 if (h->got.refcount > 0
1d85728f 2391 && info->executable
13ae64f3 2392 && h->dynindx == -1
37e55690 2393 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2394 h->got.offset = (bfd_vma) -1;
13ae64f3 2395 else if (h->got.refcount > 0)
6725bdbf 2396 {
0ac8d2ca 2397 asection *s;
b34976b6 2398 bfd_boolean dyn;
13ae64f3 2399 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2400
5a15f56f
AM		 2401 /* Make sure this symbol is output as a dynamic symbol.
2402 Undefined weak syms won't yet be marked as dynamic. */
2403 if (h->dynindx == -1
f5385ebf 2404 && !h->forced_local)
5a15f56f 2405 {
c152c796 2406 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2407 return FALSE;
5a15f56f
AM		 2408 }
2409
6de2ae4a 2410 s = htab->elf.sgot;
67a4f2b7
AO		 2411 if (GOT_TLS_GDESC_P (tls_type))
2412 {
6de2ae4a 2413 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2414 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2415 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2416 h->got.offset = (bfd_vma) -2;
2417 }
2418 if (! GOT_TLS_GDESC_P (tls_type)
2419 || GOT_TLS_GD_P (tls_type))
2420 {
2421 h->got.offset = s->size;
2422 s->size += 4;
2423 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2424 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2425 s->size += 4;
2426 }
ebe50bae 2427 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2428 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2429 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2430 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2431 need two), R_386_TLS_GD needs one if local symbol and two if
2432 global. */
2433 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2434 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2435 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2436 || (tls_type & GOT_TLS_IE))
6de2ae4a 2437 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2438 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2439 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2440 else if (! GOT_TLS_GDESC_P (tls_type)
2441 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2442 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2443 && (info->shared
2444 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2445 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2446 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2447 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2448 }
2449 else
51b64d56 2450 h->got.offset = (bfd_vma) -1;
6725bdbf 2451
5a15f56f 2452 if (eh->dyn_relocs == NULL)
b34976b6 2453 return TRUE;
5a15f56f 2454
0c715baa
AM		 2455 /* In the shared -Bsymbolic case, discard space allocated for
2456 dynamic pc-relative relocs against symbols which turn out to be
2457 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2458 space for pc-relative relocs that have become local due to symbol
2459 visibility changes. */
0c715baa
AM		 2460
2461 if (info->shared)
5a15f56f 2462 {
09695f56
AM		 2463 /* The only reloc that uses pc_count is R_386_PC32, which will
2464 appear on a call or on something like ".long foo - .". We
2465 want calls to protected symbols to resolve directly to the
2466 function rather than going via the plt. If people want
2467 function pointer comparisons to work as expected then they
2468 should avoid writing assembly like ".long foo - .". */
2469 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2470 {
e03a8ed8 2471 struct elf_dyn_relocs **pp;
0c715baa
AM		 2472
2473 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2474 {
c3ce498c
L		 2475 p->count -= p->pc_count;
2476 p->pc_count = 0;
0c715baa
AM		 2477 if (p->count == 0)
2478 *pp = p->next;
2479 else
2480 pp = &p->next;
2481 }
5a15f56f 2482 }
4e795f50 2483
23209a78 2484 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2485 {
e03a8ed8 2486 struct elf_dyn_relocs **pp;
3348747a
NS		 2487 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2488 {
2489 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2490 *pp = p->next;
2491 else
2492 pp = &p->next;
2493 }
2494 }
2495
4e795f50 2496 /* Also discard relocs on undefined weak syms with non-default
c353e543 2497 visibility. */
22d606e9 2498 if (eh->dyn_relocs != NULL
c353e543 2499 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2500 {
2501 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2502 eh->dyn_relocs = NULL;
2503
2504 /* Make sure undefined weak symbols are output as a dynamic
2505 symbol in PIEs. */
2506 else if (h->dynindx == -1
2507 && !h->forced_local)
2508 {
2509 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2510 return FALSE;
2511 }
2512 }
0c715baa 2513 }
a23b6845 2514 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2515 {
2516 /* For the non-shared case, discard space for relocs against
2517 symbols which turn out to need copy relocs or are not
2518 dynamic. */
2519
f5385ebf
AM		 2520 if (!h->non_got_ref
2521 && ((h->def_dynamic
2522 && !h->def_regular)
ebe50bae 2523 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2524 && (h->root.type == bfd_link_hash_undefweak
2525 || h->root.type == bfd_link_hash_undefined))))
2526 {
2527 /* Make sure this symbol is output as a dynamic symbol.
2528 Undefined weak syms won't yet be marked as dynamic. */
2529 if (h->dynindx == -1
f5385ebf 2530 && !h->forced_local)
0c715baa 2531 {
c152c796 2532 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2533 return FALSE;
0c715baa 2534 }
5a15f56f 2535
0c715baa
AM		 2536 /* If that succeeded, we know we'll be keeping all the
2537 relocs. */
2538 if (h->dynindx != -1)
2539 goto keep;
2540 }
2541
2542 eh->dyn_relocs = NULL;
2543
ec338859 2544 keep: ;
5a15f56f
AM		 2545 }
2546
0c715baa
AM		 2547 /* Finally, allocate space. */
2548 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2549 {
e7c33416
NC		 2550 asection *sreloc;
2551
cbe950e9 2552 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2553
2554 BFD_ASSERT (sreloc != NULL);
eea6121a 2555 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2556 }
2557
b34976b6 2558 return TRUE;
6725bdbf
AM		 2559}
2560
c25bc9fc
L		 2561/* Allocate space in .plt, .got and associated reloc sections for
2562 local dynamic relocs. */
2563
2564static bfd_boolean
2565elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2566{
2567 struct elf_link_hash_entry *h
2568 = (struct elf_link_hash_entry *) *slot;
2569
2570 if (h->type != STT_GNU_IFUNC
2571 || !h->def_regular
2572 || !h->ref_regular
2573 || !h->forced_local
2574 || h->root.type != bfd_link_hash_defined)
2575 abort ();
2576
2577 return elf_i386_allocate_dynrelocs (h, inf);
2578}
2579
0c715baa
AM		 2580/* Find any dynamic relocs that apply to read-only sections. */
2581
b34976b6 2582static bfd_boolean
eb4ff4d6 2583elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2584{
2585 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2586 struct elf_dyn_relocs *p;
0c715baa 2587
aa715242
L		 2588 /* Skip local IFUNC symbols. */
2589 if (h->forced_local && h->type == STT_GNU_IFUNC)
2590 return TRUE;
2591
0c715baa
AM		 2592 eh = (struct elf_i386_link_hash_entry *) h;
2593 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2594 {
2595 asection *s = p->sec->output_section;
2596
2597 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2598 {
2599 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2600
2601 info->flags |= DF_TEXTREL;
2602
b70321a2
L		 2603 if (info->warn_shared_textrel && info->shared)
2604 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2605 p->sec->owner, h->root.root.string,
2606 p->sec);
2607
0c715baa 2608 /* Not an error, just cut short the traversal. */
b34976b6 2609 return FALSE;
0c715baa
AM		 2610 }
2611 }
b34976b6 2612 return TRUE;
0c715baa
AM		 2613}
2614
daa67607
L		 2615/* Convert
2616 mov foo@GOT(%reg), %reg
2617 to
2618 lea foo@GOTOFF(%reg), %reg
2619 with the local symbol, foo. */
2620
2621static bfd_boolean
2622elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2623 struct bfd_link_info *link_info)
2624{
2625 Elf_Internal_Shdr *symtab_hdr;
2626 Elf_Internal_Rela *internal_relocs;
2627 Elf_Internal_Rela *irel, *irelend;
2628 bfd_byte *contents;
2629 struct elf_i386_link_hash_table *htab;
2630 bfd_boolean changed_contents;
2631 bfd_boolean changed_relocs;
2632 bfd_signed_vma *local_got_refcounts;
2633
2634 /* Don't even try to convert non-ELF outputs. */
2635 if (!is_elf_hash_table (link_info->hash))
2636 return FALSE;
2637
fbdc86d9 2638 /* Nothing to do if there are no codes, no relocations or no output. */
daa67607 2639 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
fbdc86d9 2640 || sec->reloc_count == 0
c8831961 2641 || bfd_is_abs_section (sec->output_section))
daa67607
L		 2642 return TRUE;
2643
2644 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2645
2646 /* Load the relocations for this section. */
2647 internal_relocs = (_bfd_elf_link_read_relocs
2648 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2649 link_info->keep_memory));
2650 if (internal_relocs == NULL)
2651 return FALSE;
2652
2653 htab = elf_i386_hash_table (link_info);
2654 changed_contents = FALSE;
2655 changed_relocs = FALSE;
2656 local_got_refcounts = elf_local_got_refcounts (abfd);
2657
2658 /* Get the section contents. */
2659 if (elf_section_data (sec)->this_hdr.contents != NULL)
2660 contents = elf_section_data (sec)->this_hdr.contents;
2661 else
2662 {
2663 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2664 goto error_return;
2665 }
2666
2667 irelend = internal_relocs + sec->reloc_count;
2668 for (irel = internal_relocs; irel < irelend; irel++)
2669 {
2670 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2671 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2672 unsigned int indx;
2673 struct elf_link_hash_entry *h;
2674
2675 if (r_type != R_386_GOT32)
2676 continue;
2677
2678 /* Get the symbol referred to by the reloc. */
2679 if (r_symndx < symtab_hdr->sh_info)
2680 {
2681 Elf_Internal_Sym *isym;
2682
2683 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2684 abfd, r_symndx);
2685
2686 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2687 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
5697705a 2688 && irel->r_offset >= 2
daa67607
L		 2689 && bfd_get_8 (input_bfd,
2690 contents + irel->r_offset - 2) == 0x8b)
2691 {
2692 bfd_put_8 (output_bfd, 0x8d,
2693 contents + irel->r_offset - 2);
2694 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2695 if (local_got_refcounts != NULL
2696 && local_got_refcounts[r_symndx] > 0)
2697 local_got_refcounts[r_symndx] -= 1;
2698 changed_contents = TRUE;
2699 changed_relocs = TRUE;
2700 }
2701 continue;
2702 }
2703
2704 indx = r_symndx - symtab_hdr->sh_info;
2705 h = elf_sym_hashes (abfd)[indx];
2706 BFD_ASSERT (h != NULL);
2707
2708 while (h->root.type == bfd_link_hash_indirect
2709 || h->root.type == bfd_link_hash_warning)
2710 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2711
3f65f599
L		 2712 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2713 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2714 if (h->def_regular
2715 && h->type != STT_GNU_IFUNC
9637f6ef 2716 && h != htab->elf.hdynamic
daa67607 2717 && SYMBOL_REFERENCES_LOCAL (link_info, h)
5697705a 2718 && irel->r_offset >= 2
daa67607
L		 2719 && bfd_get_8 (input_bfd,
2720 contents + irel->r_offset - 2) == 0x8b)
2721 {
2722 bfd_put_8 (output_bfd, 0x8d,
2723 contents + irel->r_offset - 2);
2724 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2725 if (h->got.refcount > 0)
2726 h->got.refcount -= 1;
2727 changed_contents = TRUE;
2728 changed_relocs = TRUE;
2729 }
2730 }
2731
2732 if (contents != NULL
2733 && elf_section_data (sec)->this_hdr.contents != contents)
2734 {
2735 if (!changed_contents && !link_info->keep_memory)
2736 free (contents);
2737 else
2738 {
2739 /* Cache the section contents for elf_link_input_bfd. */
2740 elf_section_data (sec)->this_hdr.contents = contents;
2741 }
2742 }
2743
2744 if (elf_section_data (sec)->relocs != internal_relocs)
2745 {
2746 if (!changed_relocs)
2747 free (internal_relocs);
2748 else
2749 elf_section_data (sec)->relocs = internal_relocs;
2750 }
2751
2752 return TRUE;
2753
2754 error_return:
2755 if (contents != NULL
2756 && elf_section_data (sec)->this_hdr.contents != contents)
2757 free (contents);
2758 if (internal_relocs != NULL
2759 && elf_section_data (sec)->relocs != internal_relocs)
2760 free (internal_relocs);
2761 return FALSE;
2762}
2763
252b5132
RH		 2764/* Set the sizes of the dynamic sections. */
2765
b34976b6 2766static bfd_boolean
23209a78 2767elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2768{
6725bdbf 2769 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2770 bfd *dynobj;
2771 asection *s;
b34976b6 2772 bfd_boolean relocs;
0c715baa 2773 bfd *ibfd;
252b5132 2774
6725bdbf 2775 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2776 if (htab == NULL)
2777 return FALSE;
ebe50bae 2778 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2779 if (dynobj == NULL)
2780 abort ();
252b5132 2781
ebe50bae 2782 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2783 {
2784 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2785 if (info->executable)
252b5132 2786 {
3d4d4302 2787 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2788 if (s == NULL)
2789 abort ();
eea6121a 2790 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2791 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2792 }
161d71a6 2793 }
6725bdbf 2794
0c715baa
AM		 2795 /* Set up .got offsets for local syms, and space for local dynamic
2796 relocs. */
c72f2fb2 2797 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 2798 {
2799 bfd_signed_vma *local_got;
2800 bfd_signed_vma *end_local_got;
13ae64f3 2801 char *local_tls_type;
67a4f2b7 2802 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2803 bfd_size_type locsymcount;
2804 Elf_Internal_Shdr *symtab_hdr;
2805 asection *srel;
6725bdbf 2806
0ffa91dd 2807 if (! is_i386_elf (ibfd))
161d71a6 2808 continue;
6725bdbf 2809
0c715baa
AM		 2810 for (s = ibfd->sections; s != NULL; s = s->next)
2811 {
e03a8ed8 2812 struct elf_dyn_relocs *p;
0c715baa 2813
daa67607
L		 2814 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2815 return FALSE;
2816
e03a8ed8 2817 for (p = ((struct elf_dyn_relocs *)
e81d3500 2818 elf_section_data (s)->local_dynrel);
ec338859
AM		 2819 p != NULL;
2820 p = p->next)
0c715baa 2821 {
ec338859
AM		 2822 if (!bfd_is_abs_section (p->sec)
2823 && bfd_is_abs_section (p->sec->output_section))
2824 {
2825 /* Input section has been discarded, either because
2826 it is a copy of a linkonce section or due to
2827 linker script /DISCARD/, so we'll be discarding
2828 the relocs too. */
2829 }
23209a78 2830 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2831 && strcmp (p->sec->output_section->name,
2832 ".tls_vars") == 0)
2833 {
2834 /* Relocations in vxworks .tls_vars sections are
2835 handled specially by the loader. */
2836 }
248866a8 2837 else if (p->count != 0)
ec338859
AM		 2838 {
2839 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2840 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2841 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2842 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2843 {
2844 info->flags |= DF_TEXTREL;
2845 if (info->warn_shared_textrel && info->shared)
2846 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2847 p->sec->owner, p->sec);
b70321a2 2848 }
ec338859 2849 }
0c715baa
AM		 2850 }
2851 }
2852
2853 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2854 if (!local_got)
2855 continue;
6725bdbf 2856
0ffa91dd 2857 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2858 locsymcount = symtab_hdr->sh_info;
2859 end_local_got = local_got + locsymcount;
13ae64f3 2860 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2861 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2862 s = htab->elf.sgot;
2863 srel = htab->elf.srelgot;
67a4f2b7
AO		 2864 for (; local_got < end_local_got;
2865 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2866 {
67a4f2b7 2867 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2868 if (*local_got > 0)
6725bdbf 2869 {
67a4f2b7
AO		 2870 if (GOT_TLS_GDESC_P (*local_tls_type))
2871 {
6de2ae4a 2872 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2873 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2874 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2875 *local_got = (bfd_vma) -2;
2876 }
2877 if (! GOT_TLS_GDESC_P (*local_tls_type)
2878 || GOT_TLS_GD_P (*local_tls_type))
2879 {
2880 *local_got = s->size;
2881 s->size += 4;
2882 if (GOT_TLS_GD_P (*local_tls_type)
2883 || *local_tls_type == GOT_TLS_IE_BOTH)
2884 s->size += 4;
2885 }
13ae64f3 2886 if (info->shared
67a4f2b7 2887 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2888 || (*local_tls_type & GOT_TLS_IE))
2889 {
2890 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2891 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2892 else if (GOT_TLS_GD_P (*local_tls_type)
2893 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2894 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2895 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2896 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2897 }
6725bdbf 2898 }
161d71a6
L		 2899 else
2900 *local_got = (bfd_vma) -1;
6725bdbf 2901 }
252b5132 2902 }
6725bdbf 2903
13ae64f3
JJ		 2904 if (htab->tls_ldm_got.refcount > 0)
2905 {
2906 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2907 relocs. */
6de2ae4a
L		 2908 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2909 htab->elf.sgot->size += 8;
2910 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2911 }
2912 else
2913 htab->tls_ldm_got.offset = -1;
2914
0c715baa
AM		 2915 /* Allocate global sym .plt and .got entries, and space for global
2916 sym dynamic relocs. */
eb4ff4d6 2917 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2918
c25bc9fc
L		 2919 /* Allocate .plt and .got entries, and space for local symbols. */
2920 htab_traverse (htab->loc_hash_table,
2921 elf_i386_allocate_local_dynrelocs,
2922 info);
2923
67a4f2b7
AO		 2924 /* For every jump slot reserved in the sgotplt, reloc_count is
2925 incremented. However, when we reserve space for TLS descriptors,
2926 it's not incremented, so in order to compute the space reserved
2927 for them, it suffices to multiply the reloc count by the jump
e1f98742 2928 slot size.
caa0075c 2929
e1f98742
L		 2930 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2931 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2932 if (htab->elf.srelplt)
e1f98742
L		 2933 {
2934 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2935 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2936 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2937 }
2938 else if (htab->elf.irelplt)
2939 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2940
67a4f2b7 2941
a7b16ceb
L		 2942 if (htab->elf.sgotplt)
2943 {
2944 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2945 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2946 if ((htab->elf.hgot == NULL
2947 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2948 && (htab->elf.sgotplt->size
2949 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2950 && (htab->elf.splt == NULL
2951 || htab->elf.splt->size == 0)
2952 && (htab->elf.sgot == NULL
2953 || htab->elf.sgot->size == 0)
2954 && (htab->elf.iplt == NULL
2955 || htab->elf.iplt->size == 0)
2956 && (htab->elf.igotplt == NULL
2957 || htab->elf.igotplt->size == 0))
2958 htab->elf.sgotplt->size = 0;
2959 }
2960
9a2a56cc
AM		 2961
2962 if (htab->plt_eh_frame != NULL
2963 && htab->elf.splt != NULL
2964 && htab->elf.splt->size != 0
2965 && !bfd_is_abs_section (htab->elf.splt->output_section)
2966 && _bfd_elf_eh_frame_present (info))
2967 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2968
5a15f56f
AM		 2969 /* We now have determined the sizes of the various dynamic sections.
2970 Allocate memory for them. */
b34976b6 2971 relocs = FALSE;
252b5132
RH		 2972 for (s = dynobj->sections; s != NULL; s = s->next)
2973 {
eac338cf
PB		 2974 bfd_boolean strip_section = TRUE;
2975
252b5132
RH		 2976 if ((s->flags & SEC_LINKER_CREATED) == 0)
2977 continue;
2978
6de2ae4a 2979 if (s == htab->elf.splt
9a2a56cc 2980 || s == htab->elf.sgot)
252b5132 2981 {
6725bdbf
AM		 2982 /* Strip this section if we don't need it; see the
2983 comment below. */
eac338cf
PB		 2984 /* We'd like to strip these sections if they aren't needed, but if
2985 we've exported dynamic symbols from them we must leave them.
2986 It's too late to tell BFD to get rid of the symbols. */
2987
7325306f 2988 if (htab->elf.hplt != NULL)
eac338cf 2989 strip_section = FALSE;
252b5132 2990 }
9a2a56cc
AM		 2991 else if (s == htab->elf.sgotplt
2992 || s == htab->elf.iplt
2993 || s == htab->elf.igotplt
dd7e64d4 2994 || s == htab->plt_got
9a2a56cc
AM		 2995 || s == htab->plt_eh_frame
2996 || s == htab->sdynbss)
2997 {
2998 /* Strip these too. */
2999 }
0112cd26 3000 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3001 {
6de2ae4a
L		 3002 if (s->size != 0
3003 && s != htab->elf.srelplt
3004 && s != htab->srelplt2)
b34976b6 3005 relocs = TRUE;
252b5132 3006
0ac8d2ca
AM		 3007 /* We use the reloc_count field as a counter if we need
3008 to copy relocs into the output file. */
5ae0bfb6 3009 s->reloc_count = 0;
252b5132 3010 }
6725bdbf 3011 else
252b5132
RH		 3012 {
3013 /* It's not one of our sections, so don't allocate space. */
3014 continue;
3015 }
3016
c456f082 3017 if (s->size == 0)
252b5132 3018 {
0ac8d2ca
AM		 3019 /* If we don't need this section, strip it from the
3020 output file. This is mostly to handle .rel.bss and
3021 .rel.plt. We must create both sections in
3022 create_dynamic_sections, because they must be created
3023 before the linker maps input sections to output
3024 sections. The linker does that before
3025 adjust_dynamic_symbol is called, and it is that
3026 function which decides whether anything needs to go
3027 into these sections. */
c456f082
AM		 3028 if (strip_section)
3029 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3030 continue;
3031 }
3032
c456f082
AM		 3033 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3034 continue;
3035
f69da49f
AM		 3036 /* Allocate memory for the section contents. We use bfd_zalloc
3037 here in case unused entries are not reclaimed before the
3038 section's contents are written out. This should not happen,
3039 but this way if it does, we get a R_386_NONE reloc instead
3040 of garbage. */
a50b1753 3041 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3042 if (s->contents == NULL)
b34976b6 3043 return FALSE;
252b5132
RH		 3044 }
3045
e41b3a13 3046 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3047 && htab->plt_eh_frame->contents != NULL)
3048 {
3049 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3050 sizeof (elf_i386_eh_frame_plt));
3051 bfd_put_32 (dynobj, htab->elf.splt->size,
3052 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3053 }
e41b3a13 3054
ebe50bae 3055 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3056 {
3057 /* Add some entries to the .dynamic section. We fill in the
3058 values later, in elf_i386_finish_dynamic_sections, but we
3059 must add the entries now so that we get the correct size for
3060 the .dynamic section. The DT_DEBUG entry is filled in by the
3061 dynamic linker and used by the debugger. */
dc810e39 3062#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3063 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3064
36af4a4e 3065 if (info->executable)
252b5132 3066 {
dc810e39 3067 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3068 return FALSE;
252b5132
RH		 3069 }
3070
6de2ae4a 3071 if (htab->elf.splt->size != 0)
252b5132 3072 {
dc810e39
AM		 3073 if (!add_dynamic_entry (DT_PLTGOT, 0)
3074 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3075 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3076 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3077 return FALSE;
252b5132
RH		 3078 }
3079
3080 if (relocs)
3081 {
dc810e39
AM		 3082 if (!add_dynamic_entry (DT_REL, 0)
3083 || !add_dynamic_entry (DT_RELSZ, 0)
3084 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3085 return FALSE;
252b5132 3086
0c715baa
AM		 3087 /* If any dynamic relocs apply to a read-only section,
3088 then we need a DT_TEXTREL entry. */
248866a8 3089 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3090 elf_link_hash_traverse (&htab->elf,
3091 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3092
3093 if ((info->flags & DF_TEXTREL) != 0)
3094 {
3095 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3096 return FALSE;
0c715baa 3097 }
252b5132 3098 }
23209a78 3099 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3100 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3101 return FALSE;
252b5132 3102 }
dc810e39 3103#undef add_dynamic_entry
252b5132 3104
b34976b6 3105 return TRUE;
252b5132
RH		 3106}
3107
67a4f2b7
AO		 3108static bfd_boolean
3109elf_i386_always_size_sections (bfd *output_bfd,
3110 struct bfd_link_info *info)
3111{
3112 asection *tls_sec = elf_hash_table (info)->tls_sec;
3113
3114 if (tls_sec)
3115 {
3116 struct elf_link_hash_entry *tlsbase;
3117
3118 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3119 "_TLS_MODULE_BASE_",
3120 FALSE, FALSE, FALSE);
3121
3122 if (tlsbase && tlsbase->type == STT_TLS)
3123 {
4dfe6ac6 3124 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3125 struct bfd_link_hash_entry *bh = NULL;
3126 const struct elf_backend_data *bed
3127 = get_elf_backend_data (output_bfd);
3128
4dfe6ac6
NC		 3129 htab = elf_i386_hash_table (info);
3130 if (htab == NULL)
3131 return FALSE;
3132
67a4f2b7
AO		 3133 if (!(_bfd_generic_link_add_one_symbol
3134 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3135 tls_sec, 0, NULL, FALSE,
3136 bed->collect, &bh)))
3137 return FALSE;
9f03412a 3138
4dfe6ac6 3139 htab->tls_module_base = bh;
9f03412a 3140
67a4f2b7
AO		 3141 tlsbase = (struct elf_link_hash_entry *)bh;
3142 tlsbase->def_regular = 1;
3143 tlsbase->other = STV_HIDDEN;
3144 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3145 }
3146 }
3147
3148 return TRUE;
3149}
3150
38701953
AM		 3151/* Set the correct type for an x86 ELF section. We do this by the
3152 section name, which is a hack, but ought to work. */
3153
b34976b6 3154static bfd_boolean
55fd94b0
AM		 3155elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3156 Elf_Internal_Shdr *hdr,
3157 asection *sec)
38701953 3158{
91d6fa6a 3159 const char *name;
38701953
AM		 3160
3161 name = bfd_get_section_name (abfd, sec);
3162
3163 /* This is an ugly, but unfortunately necessary hack that is
3164 needed when producing EFI binaries on x86. It tells
3165 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3166 containing ELF relocation info. We need this hack in order to
3167 be able to generate ELF binaries that can be translated into
3168 EFI applications (which are essentially COFF objects). Those
3169 files contain a COFF ".reloc" section inside an ELFNN object,
3170 which would normally cause BFD to segfault because it would
3171 attempt to interpret this section as containing relocation
3172 entries for section "oc". With this hack enabled, ".reloc"
3173 will be treated as a normal data section, which will avoid the
3174 segfault. However, you won't be able to create an ELFNN binary
3175 with a section named "oc" that needs relocations, but that's
3176 the kind of ugly side-effects you get when detecting section
3177 types based on their names... In practice, this limitation is
3178 unlikely to bite. */
3179 if (strcmp (name, ".reloc") == 0)
3180 hdr->sh_type = SHT_PROGBITS;
3181
b34976b6 3182 return TRUE;
38701953
AM		 3183}
3184
9f03412a
AO		 3185/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3186 executables. Rather than setting it to the beginning of the TLS
3187 section, we have to set it to the end. This function may be called
3188 multiple times, it is idempotent. */
3189
3190static void
eb4ff4d6 3191elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3192{
4dfe6ac6 3193 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3194 struct bfd_link_hash_entry *base;
3195
3196 if (!info->executable)
3197 return;
3198
4dfe6ac6
NC		 3199 htab = elf_i386_hash_table (info);
3200 if (htab == NULL)
3201 return;
9f03412a 3202
4dfe6ac6
NC		 3203 base = htab->tls_module_base;
3204 if (base == NULL)
9f03412a
AO		 3205 return;
3206
4dfe6ac6 3207 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3208}
3209
13ae64f3
JJ		 3210/* Return the base VMA address which should be subtracted from real addresses
3211 when resolving @dtpoff relocation.
3212 This is PT_TLS segment p_vaddr. */
3213
3214static bfd_vma
eb4ff4d6 3215elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3216{
e1918d23
AM		 3217 /* If tls_sec is NULL, we should have signalled an error already. */
3218 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3219 return 0;
e1918d23 3220 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3221}
3222
3223/* Return the relocation value for @tpoff relocation
3224 if STT_TLS virtual address is ADDRESS. */
3225
3226static bfd_vma
eb4ff4d6 3227elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3228{
e1918d23 3229 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3230 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3231 bfd_vma static_tls_size;
13ae64f3 3232
e1918d23
AM		 3233 /* If tls_sec is NULL, we should have signalled an error already. */
3234 if (htab->tls_sec == NULL)
6a30718d 3235 return 0;
7dc98aea
RO		 3236
3237 /* Consider special static TLS alignment requirements. */
3238 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3239 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3240}
3241
252b5132
RH		 3242/* Relocate an i386 ELF section. */
3243
b34976b6 3244static bfd_boolean
55fd94b0
AM		 3245elf_i386_relocate_section (bfd *output_bfd,
3246 struct bfd_link_info *info,
3247 bfd *input_bfd,
3248 asection *input_section,
3249 bfd_byte *contents,
3250 Elf_Internal_Rela *relocs,
3251 Elf_Internal_Sym *local_syms,
3252 asection **local_sections)
252b5132 3253{
6725bdbf 3254 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3255 Elf_Internal_Shdr *symtab_hdr;
3256 struct elf_link_hash_entry **sym_hashes;
3257 bfd_vma *local_got_offsets;
67a4f2b7 3258 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3259 Elf_Internal_Rela *rel;
3260 Elf_Internal_Rela *relend;
3348747a 3261 bfd_boolean is_vxworks_tls;
25e762b9 3262 unsigned plt_entry_size;
252b5132 3263
0ffa91dd 3264 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3265
6725bdbf 3266 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3267 if (htab == NULL)
3268 return FALSE;
0ffa91dd 3269 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3270 sym_hashes = elf_sym_hashes (input_bfd);
3271 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3272 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3273 /* We have to handle relocations in vxworks .tls_vars sections
3274 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3275 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3276 && info->shared
3348747a
NS		 3277 && !strcmp (input_section->output_section->name,
3278 ".tls_vars"));
252b5132 3279
eb4ff4d6 3280 elf_i386_set_tls_module_base (info);
9f03412a 3281
25e762b9
RM		 3282 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3283
252b5132
RH		 3284 rel = relocs;
3285 relend = relocs + input_section->reloc_count;
3286 for (; rel < relend; rel++)
3287 {
13ae64f3 3288 unsigned int r_type;
252b5132
RH		 3289 reloc_howto_type *howto;
3290 unsigned long r_symndx;
3291 struct elf_link_hash_entry *h;
dd7e64d4 3292 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3293 Elf_Internal_Sym *sym;
3294 asection *sec;
dd7e64d4 3295 bfd_vma off, offplt, plt_offset;
252b5132 3296 bfd_vma relocation;
b34976b6 3297 bfd_boolean unresolved_reloc;
252b5132 3298 bfd_reloc_status_type r;
1b452ec6 3299 unsigned int indx;
13ae64f3 3300 int tls_type;
1788fc08 3301 bfd_vma st_size;
dd7e64d4 3302 asection *resolved_plt;
252b5132
RH		 3303
3304 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3305 if (r_type == R_386_GNU_VTINHERIT
3306 || r_type == R_386_GNU_VTENTRY)
252b5132 3307 continue;
dc47f327 3308
55fd94b0 3309 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3310 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3311 >= R_386_ext - R_386_standard)
3312 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3313 >= R_386_irelative - R_386_ext))
252b5132 3314 {
6ba842b6 3315 (*_bfd_error_handler)
d003868e
AM		 3316 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3317 input_bfd, input_section, r_type);
252b5132 3318 bfd_set_error (bfd_error_bad_value);
b34976b6 3319 return FALSE;
252b5132 3320 }
1b452ec6 3321 howto = elf_howto_table + indx;
252b5132
RH		 3322
3323 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3324 h = NULL;
3325 sym = NULL;
3326 sec = NULL;
b34976b6 3327 unresolved_reloc = FALSE;
252b5132
RH		 3328 if (r_symndx < symtab_hdr->sh_info)
3329 {
3330 sym = local_syms + r_symndx;
3331 sec = local_sections[r_symndx];
3332 relocation = (sec->output_section->vma
3333 + sec->output_offset
3334 + sym->st_value);
1788fc08 3335 st_size = sym->st_size;
ab96bf03
AM		 3336
3337 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3338 && ((sec->flags & SEC_MERGE) != 0
3339 || (info->relocatable
3340 && sec->output_offset != 0)))
f8df10f4 3341 {
f8df10f4 3342 bfd_vma addend;
4a335f3d 3343 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3344
4a335f3d 3345 switch (howto->size)
f8df10f4 3346 {
4a335f3d
AM		 3347 case 0:
3348 addend = bfd_get_8 (input_bfd, where);
3349 if (howto->pc_relative)
3350 {
3351 addend = (addend ^ 0x80) - 0x80;
3352 addend += 1;
3353 }
3354 break;
3355 case 1:
3356 addend = bfd_get_16 (input_bfd, where);
3357 if (howto->pc_relative)
3358 {
3359 addend = (addend ^ 0x8000) - 0x8000;
3360 addend += 2;
3361 }
3362 break;
3363 case 2:
3364 addend = bfd_get_32 (input_bfd, where);
3365 if (howto->pc_relative)
3366 {
3367 addend = (addend ^ 0x80000000) - 0x80000000;
3368 addend += 4;
3369 }
3370 break;
3371 default:
3372 abort ();
f8df10f4
JJ		 3373 }
3374
ab96bf03
AM		 3375 if (info->relocatable)
3376 addend += sec->output_offset;
3377 else
3378 {
3379 asection *msec = sec;
3380 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3381 addend);
3382 addend -= relocation;
3383 addend += msec->output_section->vma + msec->output_offset;
3384 }
4a335f3d
AM		 3385
3386 switch (howto->size)
3387 {
3388 case 0:
16a10388 3389 /* FIXME: overflow checks. */
4a335f3d
AM		 3390 if (howto->pc_relative)
3391 addend -= 1;
3392 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3393 break;
3394 case 1:
3395 if (howto->pc_relative)
3396 addend -= 2;
3397 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3398 break;
3399 case 2:
3400 if (howto->pc_relative)
3401 addend -= 4;
3402 bfd_put_32 (input_bfd, addend, where);
3403 break;
3404 }
f8df10f4 3405 }
1f85278f
L		 3406 else if (!info->relocatable
3407 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3408 {
3409 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3410 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3411 FALSE);
c25bc9fc
L		 3412 if (h == NULL)
3413 abort ();
3414
23209a78 3415 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3416 h->root.u.def.value = sym->st_value;
3417 h->root.u.def.section = sec;
3418 }
252b5132
RH		 3419 }
3420 else
3421 {
3d540e93 3422 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3423 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3424
b2a8e766
AM		 3425 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3426 r_symndx, symtab_hdr, sym_hashes,
3427 h, sec, relocation,
62d887d4 3428 unresolved_reloc, warned, ignored);
1788fc08 3429 st_size = h->size;
252b5132
RH		 3430 }
3431
dbaa2011 3432 if (sec != NULL && discarded_section (sec))
0672748a 3433 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3434 rel, 1, relend, howto, 0, contents);
9635fe29 3435
ab96bf03
AM		 3436 if (info->relocatable)
3437 continue;
3438
cbe950e9
L		 3439 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3440 it here if it is defined in a non-shared object. */
3441 if (h != NULL
3442 && h->type == STT_GNU_IFUNC
3443 && h->def_regular)
3444 {
3445 asection *plt, *gotplt, *base_got;
3446 bfd_vma plt_index;
4c544807 3447 const char *name;
cbe950e9
L		 3448
3449 if ((input_section->flags & SEC_ALLOC) == 0
3450 || h->plt.offset == (bfd_vma) -1)
3451 abort ();
3452
3453 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3454 if (htab->elf.splt != NULL)
cbe950e9 3455 {
6de2ae4a
L		 3456 plt = htab->elf.splt;
3457 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3458 }
3459 else
3460 {
6de2ae4a
L		 3461 plt = htab->elf.iplt;
3462 gotplt = htab->elf.igotplt;
cbe950e9
L		 3463 }
3464
3465 relocation = (plt->output_section->vma
3466 + plt->output_offset + h->plt.offset);
3467
3468 switch (r_type)
3469 {
3470 default:
4c544807
L		 3471 if (h->root.root.string)
3472 name = h->root.root.string;
3473 else
3474 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3475 NULL);
cbe950e9
L		 3476 (*_bfd_error_handler)
3477 (_("%B: relocation %s against STT_GNU_IFUNC "
3478 "symbol `%s' isn't handled by %s"), input_bfd,
3479 elf_howto_table[r_type].name,
4c544807 3480 name, __FUNCTION__);
cbe950e9
L		 3481 bfd_set_error (bfd_error_bad_value);
3482 return FALSE;
3483
3484 case R_386_32:
710ab287 3485 /* Generate dynamic relcoation only when there is a
c293fa49 3486 non-GOT reference in a shared object. */
710ab287
L		 3487 if (info->shared && h->non_got_ref)
3488 {
3489 Elf_Internal_Rela outrel;
710ab287
L		 3490 asection *sreloc;
3491 bfd_vma offset;
3492
c25bc9fc
L		 3493 /* Need a dynamic relocation to get the real function
3494 adddress. */
710ab287
L		 3495 offset = _bfd_elf_section_offset (output_bfd,
3496 info,
3497 input_section,
3498 rel->r_offset);
3499 if (offset == (bfd_vma) -1
3500 || offset == (bfd_vma) -2)
3501 abort ();
3502
3503 outrel.r_offset = (input_section->output_section->vma
3504 + input_section->output_offset
3505 + offset);
3506
3507 if (h->dynindx == -1
44c4ea11
L		 3508 || h->forced_local
3509 || info->executable)
710ab287
L		 3510 {
3511 /* This symbol is resolved locally. */
56b8aada
L		 3512 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3513 bfd_put_32 (output_bfd,
3514 (h->root.u.def.value
3515 + h->root.u.def.section->output_section->vma
3516 + h->root.u.def.section->output_offset),
3517 contents + offset);
710ab287
L		 3518 }
3519 else
56b8aada 3520 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3521
6de2ae4a 3522 sreloc = htab->elf.irelifunc;
59d6ffb2 3523 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3524
3525 /* If this reloc is against an external symbol, we
3526 do not want to fiddle with the addend. Otherwise,
3527 we need to include the symbol value so that it
3528 becomes an addend for the dynamic reloc. For an
3529 internal symbol, we have updated addend. */
56b8aada 3530 continue;
710ab287 3531 }
d59a60e9 3532 /* FALLTHROUGH */
cbe950e9
L		 3533 case R_386_PC32:
3534 case R_386_PLT32:
3535 goto do_relocation;
3536
3537 case R_386_GOT32:
6de2ae4a 3538 base_got = htab->elf.sgot;
cbe950e9
L		 3539 off = h->got.offset;
3540
7afd84dc 3541 if (base_got == NULL)
cbe950e9
L		 3542 abort ();
3543
7afd84dc 3544 if (off == (bfd_vma) -1)
cbe950e9 3545 {
7afd84dc
L		 3546 /* We can't use h->got.offset here to save state, or
3547 even just remember the offset, as finish_dynamic_symbol
3548 would use that as offset into .got. */
6bbec505 3549
6de2ae4a 3550 if (htab->elf.splt != NULL)
7afd84dc 3551 {
25e762b9 3552 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3553 off = (plt_index + 3) * 4;
6de2ae4a 3554 base_got = htab->elf.sgotplt;
7afd84dc 3555 }
cbe950e9
L		 3556 else
3557 {
25e762b9 3558 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3559 off = plt_index * 4;
6de2ae4a 3560 base_got = htab->elf.igotplt;
7afd84dc
L		 3561 }
3562
3563 if (h->dynindx == -1
3564 || h->forced_local
3565 || info->symbolic)
3566 {
3567 /* This references the local defitionion. We must
3568 initialize this entry in the global offset table.
3569 Since the offset must always be a multiple of 8,
3570 we use the least significant bit to record
3571 whether we have initialized it already.
3572
3573 When doing a dynamic link, we create a .rela.got
3574 relocation entry to initialize the value. This
3575 is done in the finish_dynamic_symbol routine. */
3576 if ((off & 1) != 0)
3577 off &= ~1;
3578 else
3579 {
3580 bfd_put_32 (output_bfd, relocation,
3581 base_got->contents + off);
3582 h->got.offset |= 1;
3583 }
cbe950e9 3584 }
cbe950e9 3585
7afd84dc 3586 relocation = off;
cbe950e9 3587
7afd84dc 3588 /* Adjust for static executables. */
6de2ae4a 3589 if (htab->elf.splt == NULL)
7afd84dc
L		 3590 relocation += gotplt->output_offset;
3591 }
3592 else
0018b0a3
L		 3593 {
3594 relocation = (base_got->output_section->vma
3595 + base_got->output_offset + off
3596 - gotplt->output_section->vma
3597 - gotplt->output_offset);
3598 /* Adjust for static executables. */
6de2ae4a 3599 if (htab->elf.splt == NULL)
0018b0a3
L		 3600 relocation += gotplt->output_offset;
3601 }
3602
cbe950e9
L		 3603 goto do_relocation;
3604
3605 case R_386_GOTOFF:
3606 relocation -= (gotplt->output_section->vma
3607 + gotplt->output_offset);
3608 goto do_relocation;
3609 }
3610 }
3611
252b5132
RH		 3612 switch (r_type)
3613 {
3614 case R_386_GOT32:
3615 /* Relocation is to the entry for this symbol in the global
3616 offset table. */
6de2ae4a 3617 if (htab->elf.sgot == NULL)
ffb2e45b 3618 abort ();
252b5132
RH		 3619
3620 if (h != NULL)
3621 {
b34976b6 3622 bfd_boolean dyn;
252b5132
RH		 3623
3624 off = h->got.offset;
ebe50bae 3625 dyn = htab->elf.dynamic_sections_created;
26e41594 3626 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3627 || (info->shared
586119b3 3628 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3629 || (ELF_ST_VISIBILITY (h->other)
3630 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3631 {
3632 /* This is actually a static link, or it is a
3633 -Bsymbolic link and the symbol is defined
3634 locally, or the symbol was forced to be local
3635 because of a version file. We must initialize
3636 this entry in the global offset table. Since the
3637 offset must always be a multiple of 4, we use the
3638 least significant bit to record whether we have
3639 initialized it already.
3640
3641 When doing a dynamic link, we create a .rel.got
3642 relocation entry to initialize the value. This
3643 is done in the finish_dynamic_symbol routine. */
3644 if ((off & 1) != 0)
3645 off &= ~1;
3646 else
3647 {
3648 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3649 htab->elf.sgot->contents + off);
252b5132
RH		 3650 h->got.offset |= 1;
3651 }
3652 }
8c694914 3653 else
b34976b6 3654 unresolved_reloc = FALSE;
252b5132
RH		 3655 }
3656 else
3657 {
ffb2e45b
AM		 3658 if (local_got_offsets == NULL)
3659 abort ();
252b5132
RH		 3660
3661 off = local_got_offsets[r_symndx];
3662
3663 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3664 the least significant bit to record whether we have
3665 already generated the necessary reloc. */
252b5132
RH		 3666 if ((off & 1) != 0)
3667 off &= ~1;
3668 else
3669 {
6725bdbf 3670 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3671 htab->elf.sgot->contents + off);
252b5132
RH		 3672
3673 if (info->shared)
3674 {
947216bf
AM		 3675 asection *s;
3676 Elf_Internal_Rela outrel;
252b5132 3677
6de2ae4a 3678 s = htab->elf.srelgot;
947216bf 3679 if (s == NULL)
ffb2e45b 3680 abort ();
252b5132 3681
6de2ae4a
L		 3682 outrel.r_offset = (htab->elf.sgot->output_section->vma
3683 + htab->elf.sgot->output_offset
252b5132
RH		 3684 + off);
3685 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3686 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3687 }
3688
3689 local_got_offsets[r_symndx] |= 1;
3690 }
252b5132
RH		 3691 }
3692
ffb2e45b
AM		 3693 if (off >= (bfd_vma) -2)
3694 abort ();
3695
6de2ae4a
L		 3696 relocation = htab->elf.sgot->output_section->vma
3697 + htab->elf.sgot->output_offset + off
3698 - htab->elf.sgotplt->output_section->vma
3699 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3700 break;
3701
3702 case R_386_GOTOFF:
3703 /* Relocation is relative to the start of the global offset
3704 table. */
3705
90f487df
L		 3706 /* Check to make sure it isn't a protected function symbol
3707 for shared library since it may not be local when used
41bed6dd
L		 3708 as function address. We also need to make sure that a
3709 symbol is defined locally. */
3710 if (info->shared && h)
90f487df 3711 {
41bed6dd
L		 3712 if (!h->def_regular)
3713 {
3714 const char *v;
3715
3716 switch (ELF_ST_VISIBILITY (h->other))
3717 {
3718 case STV_HIDDEN:
3719 v = _("hidden symbol");
3720 break;
3721 case STV_INTERNAL:
3722 v = _("internal symbol");
3723 break;
3724 case STV_PROTECTED:
3725 v = _("protected symbol");
3726 break;
3727 default:
3728 v = _("symbol");
3729 break;
3730 }
3731
3732 (*_bfd_error_handler)
3733 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3734 input_bfd, v, h->root.root.string);
3735 bfd_set_error (bfd_error_bad_value);
3736 return FALSE;
3737 }
3738 else if (!info->executable
bdb892b9 3739 && !SYMBOLIC_BIND (info, h)
41bed6dd
L		 3740 && h->type == STT_FUNC
3741 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3742 {
3743 (*_bfd_error_handler)
3744 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3745 input_bfd, h->root.root.string);
3746 bfd_set_error (bfd_error_bad_value);
3747 return FALSE;
3748 }
90f487df
L		 3749 }
3750
8c37241b
JJ		 3751 /* Note that sgot is not involved in this
3752 calculation. We always want the start of .got.plt. If we
3753 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3754 permitted by the ABI, we might have to change this
3755 calculation. */
6de2ae4a
L		 3756 relocation -= htab->elf.sgotplt->output_section->vma
3757 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3758 break;
3759
3760 case R_386_GOTPC:
3761 /* Use global offset table as symbol value. */
6de2ae4a
L		 3762 relocation = htab->elf.sgotplt->output_section->vma
3763 + htab->elf.sgotplt->output_offset;
b34976b6 3764 unresolved_reloc = FALSE;
252b5132
RH		 3765 break;
3766
3767 case R_386_PLT32:
3768 /* Relocation is to the entry for this symbol in the
3769 procedure linkage table. */
3770
dd5724d5 3771 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3772 without using the procedure linkage table. */
252b5132
RH		 3773 if (h == NULL)
3774 break;
3775
dd7e64d4
L		 3776 eh = (struct elf_i386_link_hash_entry *) h;
3777 if ((h->plt.offset == (bfd_vma) -1
3778 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3779 || htab->elf.splt == NULL)
252b5132
RH		 3780 {
3781 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3782 happens when statically linking PIC code, or when
3783 using -Bsymbolic. */
252b5132
RH		 3784 break;
3785 }
3786
dd7e64d4
L		 3787 if (h->plt.offset != (bfd_vma) -1)
3788 {
3789 resolved_plt = htab->elf.splt;
3790 plt_offset = h->plt.offset;
3791 }
3792 else
3793 {
3794 resolved_plt = htab->plt_got;
3795 plt_offset = eh->plt_got.offset;
3796 }
3797
3798 relocation = (resolved_plt->output_section->vma
3799 + resolved_plt->output_offset
3800 + plt_offset);
b34976b6 3801 unresolved_reloc = FALSE;
252b5132
RH		 3802 break;
3803
1788fc08 3804 case R_386_SIZE32:
1788fc08
L		 3805 /* Set to symbol size. */
3806 relocation = st_size;
3807 /* Fall through. */
3808
252b5132
RH		 3809 case R_386_32:
3810 case R_386_PC32:
3348747a
NS		 3811 if ((input_section->flags & SEC_ALLOC) == 0
3812 || is_vxworks_tls)
ec338859
AM		 3813 break;
3814
12d0ee4a 3815 if ((info->shared
ef5aade5
L		 3816 && (h == NULL
3817 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3818 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3819 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3820 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3821 || (ELIMINATE_COPY_RELOCS
3822 && !info->shared
12d0ee4a
AM		 3823 && h != NULL
3824 && h->dynindx != -1
f5385ebf
AM		 3825 && !h->non_got_ref
3826 && ((h->def_dynamic
3827 && !h->def_regular)
28d0b90e 3828 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3829 || h->root.type == bfd_link_hash_undefined)))
252b5132 3830 {
947216bf 3831 Elf_Internal_Rela outrel;
b34976b6 3832 bfd_boolean skip, relocate;
0c715baa 3833 asection *sreloc;
252b5132
RH		 3834
3835 /* When generating a shared object, these relocations
3836 are copied into the output file to be resolved at run
3837 time. */
3838
b34976b6
AM		 3839 skip = FALSE;
3840 relocate = FALSE;
252b5132 3841
c629eae0
JJ		 3842 outrel.r_offset =
3843 _bfd_elf_section_offset (output_bfd, info, input_section,
3844 rel->r_offset);
3845 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3846 skip = TRUE;
0bb2d96a 3847 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3848 skip = TRUE, relocate = TRUE;
252b5132
RH		 3849 outrel.r_offset += (input_section->output_section->vma
3850 + input_section->output_offset);
3851
3852 if (skip)
0bb2d96a 3853 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3854 else if (h != NULL
3855 && h->dynindx != -1
3856 && (r_type == R_386_PC32
3857 || !info->shared
55255dae 3858 || !SYMBOLIC_BIND (info, h)
f5385ebf 3859 || !h->def_regular))
0bb2d96a 3860 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3861 else
3862 {
5a15f56f 3863 /* This symbol is local, or marked to become local. */
b34976b6 3864 relocate = TRUE;
5a15f56f 3865 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3866 }
3867
cbe950e9 3868 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3869
62d78908
L		 3870 if (sreloc == NULL || sreloc->contents == NULL)
3871 {
3872 r = bfd_reloc_notsupported;
3873 goto check_relocation_error;
3874 }
0c715baa 3875
59d6ffb2 3876 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3877
3878 /* If this reloc is against an external symbol, we do
3879 not want to fiddle with the addend. Otherwise, we
3880 need to include the symbol value so that it becomes
3881 an addend for the dynamic reloc. */
0f88be7a 3882 if (! relocate)
252b5132
RH		 3883 continue;
3884 }
252b5132
RH		 3885 break;
3886
37e55690 3887 case R_386_TLS_IE:
1d85728f 3888 if (!info->executable)
37e55690 3889 {
947216bf 3890 Elf_Internal_Rela outrel;
37e55690 3891 asection *sreloc;
37e55690
JJ		 3892
3893 outrel.r_offset = rel->r_offset
3894 + input_section->output_section->vma
3895 + input_section->output_offset;
3896 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3897 sreloc = elf_section_data (input_section)->sreloc;
3898 if (sreloc == NULL)
3899 abort ();
59d6ffb2 3900 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3901 }
3902 /* Fall through */
3903
13ae64f3 3904 case R_386_TLS_GD:
67a4f2b7
AO		 3905 case R_386_TLS_GOTDESC:
3906 case R_386_TLS_DESC_CALL:
13ae64f3 3907 case R_386_TLS_IE_32:
37e55690 3908 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3909 tls_type = GOT_UNKNOWN;
3910 if (h == NULL && local_got_offsets)
3911 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3912 else if (h != NULL)
142411ca 3913 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3914 if (tls_type == GOT_TLS_IE)
3915 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3916
3917 if (! elf_i386_tls_transition (info, input_bfd,
3918 input_section, contents,
3919 symtab_hdr, sym_hashes,
3920 &r_type, tls_type, rel,
4c544807 3921 relend, h, r_symndx))
142411ca 3922 return FALSE;
13ae64f3
JJ		 3923
3924 if (r_type == R_386_TLS_LE_32)
3925 {
82e51918 3926 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3927 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3928 {
142411ca 3929 unsigned int type;
13ae64f3
JJ		 3930 bfd_vma roff;
3931
3932 /* GD->LE transition. */
13ae64f3 3933 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3934 if (type == 0x04)
3935 {
3936 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3937 Change it into:
3938 movl %gs:0, %eax; subl $foo@tpoff, %eax
3939 (6 byte form of subl). */
13ae64f3
JJ		 3940 memcpy (contents + rel->r_offset - 3,
3941 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3942 roff = rel->r_offset + 5;
13ae64f3
JJ		 3943 }
3944 else
3945 {
142411ca
L		 3946 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3947 Change it into:
3948 movl %gs:0, %eax; subl $foo@tpoff, %eax
3949 (6 byte form of subl). */
3950 memcpy (contents + rel->r_offset - 2,
3951 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3952 roff = rel->r_offset + 6;
13ae64f3 3953 }
eb4ff4d6 3954 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3955 contents + roff);
a3fadc9a 3956 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3957 rel++;
3958 continue;
3959 }
67a4f2b7
AO		 3960 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3961 {
3962 /* GDesc -> LE transition.
3963 It's originally something like:
3964 leal x@tlsdesc(%ebx), %eax
3965
3966 leal x@ntpoff, %eax
3967
3968 Registers other than %eax may be set up here. */
3969
142411ca 3970 unsigned int val;
67a4f2b7
AO		 3971 bfd_vma roff;
3972
67a4f2b7 3973 roff = rel->r_offset;
67a4f2b7 3974 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3975
3976 /* Now modify the instruction as appropriate. */
3977 /* aoliva FIXME: remove the above and xor the byte
3978 below with 0x86. */
3979 bfd_put_8 (output_bfd, val ^ 0x86,
3980 contents + roff - 1);
eb4ff4d6 3981 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3982 contents + roff);
3983 continue;
3984 }
3985 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3986 {
3987 /* GDesc -> LE transition.
3988 It's originally:
3989 call *(%eax)
3990 Turn it into:
142411ca 3991 xchg %ax,%ax */
67a4f2b7 3992
67a4f2b7 3993 bfd_vma roff;
6bbec505 3994
67a4f2b7 3995 roff = rel->r_offset;
10efb593 3996 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3997 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3998 continue;
3999 }
37e55690 4000 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4001 {
142411ca 4002 unsigned int val;
13ae64f3
JJ		 4003
4004 /* IE->LE transition:
37e55690
JJ		 4005 Originally it can be one of:
4006 movl foo, %eax
4007 movl foo, %reg
4008 addl foo, %reg
4009 We change it into:
4010 movl $foo, %eax
4011 movl $foo, %reg
4012 addl $foo, %reg. */
37e55690 4013 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4014 if (val == 0xa1)
4015 {
4016 /* movl foo, %eax. */
55fd94b0
AM		 4017 bfd_put_8 (output_bfd, 0xb8,
4018 contents + rel->r_offset - 1);
37e55690 4019 }
299bf759 4020 else
37e55690 4021 {
142411ca
L		 4022 unsigned int type;
4023
55fd94b0
AM		 4024 type = bfd_get_8 (input_bfd,
4025 contents + rel->r_offset - 2);
299bf759 4026 switch (type)
26e41594 4027 {
299bf759
L		 4028 case 0x8b:
4029 /* movl */
299bf759
L		 4030 bfd_put_8 (output_bfd, 0xc7,
4031 contents + rel->r_offset - 2);
4032 bfd_put_8 (output_bfd,
4033 0xc0 | ((val >> 3) & 7),
4034 contents + rel->r_offset - 1);
4035 break;
4036 case 0x03:
4037 /* addl */
299bf759
L		 4038 bfd_put_8 (output_bfd, 0x81,
4039 contents + rel->r_offset - 2);
4040 bfd_put_8 (output_bfd,
4041 0xc0 | ((val >> 3) & 7),
4042 contents + rel->r_offset - 1);
4043 break;
4044 default:
4045 BFD_FAIL ();
4046 break;
26e41594 4047 }
37e55690 4048 }
eb4ff4d6 4049 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4050 contents + rel->r_offset);
4051 continue;
4052 }
4053 else
4054 {
4055 unsigned int val, type;
4056
4057 /* {IE_32,GOTIE}->LE transition:
4058 Originally it can be one of:
13ae64f3 4059 subl foo(%reg1), %reg2
13ae64f3 4060 movl foo(%reg1), %reg2
37e55690 4061 addl foo(%reg1), %reg2
13ae64f3
JJ		 4062 We change it into:
4063 subl $foo, %reg2
37e55690
JJ		 4064 movl $foo, %reg2 (6 byte form)
4065 addl $foo, %reg2. */
13ae64f3
JJ		 4066 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4067 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4068 if (type == 0x8b)
4069 {
4070 /* movl */
13ae64f3
JJ		 4071 bfd_put_8 (output_bfd, 0xc7,
4072 contents + rel->r_offset - 2);
4073 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4074 contents + rel->r_offset - 1);
4075 }
4076 else if (type == 0x2b)
4077 {
4078 /* subl */
13ae64f3
JJ		 4079 bfd_put_8 (output_bfd, 0x81,
4080 contents + rel->r_offset - 2);
4081 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4082 contents + rel->r_offset - 1);
4083 }
37e55690
JJ		 4084 else if (type == 0x03)
4085 {
4086 /* addl */
4087 bfd_put_8 (output_bfd, 0x81,
4088 contents + rel->r_offset - 2);
4089 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4090 contents + rel->r_offset - 1);
4091 }
13ae64f3
JJ		 4092 else
4093 BFD_FAIL ();
37e55690 4094 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4095 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4096 contents + rel->r_offset);
4097 else
eb4ff4d6 4098 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4099 contents + rel->r_offset);
13ae64f3
JJ		 4100 continue;
4101 }
4102 }
4103
6de2ae4a 4104 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4105 abort ();
4106
4107 if (h != NULL)
67a4f2b7
AO		 4108 {
4109 off = h->got.offset;
4110 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4111 }
13ae64f3
JJ		 4112 else
4113 {
4114 if (local_got_offsets == NULL)
4115 abort ();
4116
4117 off = local_got_offsets[r_symndx];
67a4f2b7 4118 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4119 }
4120
4121 if ((off & 1) != 0)
4122 off &= ~1;
26e41594 4123 else
13ae64f3 4124 {
947216bf 4125 Elf_Internal_Rela outrel;
91d6fa6a 4126 int dr_type;
67a4f2b7 4127 asection *sreloc;
13ae64f3 4128
6de2ae4a 4129 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4130 abort ();
4131
67a4f2b7
AO		 4132 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4133
4134 if (GOT_TLS_GDESC_P (tls_type))
4135 {
59d6ffb2 4136 bfd_byte *loc;
67a4f2b7
AO		 4137 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4138 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4139 <= htab->elf.sgotplt->size);
4140 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4141 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4142 + offplt
4143 + htab->sgotplt_jump_table_size);
6de2ae4a 4144 sreloc = htab->elf.srelplt;
67a4f2b7 4145 loc = sreloc->contents;
5ae0bfb6
RS		 4146 loc += (htab->next_tls_desc_index++
4147 * sizeof (Elf32_External_Rel));
67a4f2b7 4148 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4149 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4150 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4151 if (indx == 0)
4152 {
4153 BFD_ASSERT (! unresolved_reloc);
4154 bfd_put_32 (output_bfd,
eb4ff4d6 4155 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4156 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4157 + htab->sgotplt_jump_table_size + 4);
4158 }
4159 else
4160 {
4161 bfd_put_32 (output_bfd, 0,
6de2ae4a 4162 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4163 + htab->sgotplt_jump_table_size + 4);
4164 }
4165 }
4166
6de2ae4a 4167 sreloc = htab->elf.srelgot;
67a4f2b7 4168
6de2ae4a
L		 4169 outrel.r_offset = (htab->elf.sgot->output_section->vma
4170 + htab->elf.sgot->output_offset + off);
13ae64f3 4171
67a4f2b7 4172 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4173 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4174 else if (GOT_TLS_GDESC_P (tls_type))
4175 goto dr_done;
37e55690
JJ		 4176 else if (tls_type == GOT_TLS_IE_POS)
4177 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4178 else
4179 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4180
37e55690 4181 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4182 bfd_put_32 (output_bfd,
4183 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4184 htab->elf.sgot->contents + off);
37e55690 4185 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4186 bfd_put_32 (output_bfd,
eb4ff4d6 4187 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4188 htab->elf.sgot->contents + off);
67a4f2b7 4189 else if (dr_type != R_386_TLS_DESC)
c366c25e 4190 bfd_put_32 (output_bfd, 0,
6de2ae4a 4191 htab->elf.sgot->contents + off);
13ae64f3 4192 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4193
59d6ffb2 4194 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4195
67a4f2b7 4196 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4197 {
4198 if (indx == 0)
4199 {
82e51918 4200 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4201 bfd_put_32 (output_bfd,
eb4ff4d6 4202 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4203 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4204 }
4205 else
4206 {
4207 bfd_put_32 (output_bfd, 0,
6de2ae4a 4208 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4209 outrel.r_info = ELF32_R_INFO (indx,
4210 R_386_TLS_DTPOFF32);
4211 outrel.r_offset += 4;
59d6ffb2 4212 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4213 }
4214 }
37e55690
JJ		 4215 else if (tls_type == GOT_TLS_IE_BOTH)
4216 {
4217 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4218 (indx == 0
4219 ? relocation - elf_i386_dtpoff_base (info)
4220 : 0),
6de2ae4a 4221 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4222 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4223 outrel.r_offset += 4;
59d6ffb2 4224 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4225 }
13ae64f3 4226
67a4f2b7 4227 dr_done:
13ae64f3
JJ		 4228 if (h != NULL)
4229 h->got.offset |= 1;
4230 else
4231 local_got_offsets[r_symndx] |= 1;
4232 }
4233
67a4f2b7
AO		 4234 if (off >= (bfd_vma) -2
4235 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4236 abort ();
67a4f2b7
AO		 4237 if (r_type == R_386_TLS_GOTDESC
4238 || r_type == R_386_TLS_DESC_CALL)
4239 {
4240 relocation = htab->sgotplt_jump_table_size + offplt;
4241 unresolved_reloc = FALSE;
4242 }
4243 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4244 {
6de2ae4a
L		 4245 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4246 + htab->elf.sgotplt->output_offset;
4247 relocation = htab->elf.sgot->output_section->vma
4248 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4249 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4250 && tls_type == GOT_TLS_IE_BOTH)
4251 relocation += 4;
4252 if (r_type == R_386_TLS_IE)
8c37241b 4253 relocation += g_o_t;
b34976b6 4254 unresolved_reloc = FALSE;
13ae64f3 4255 }
67a4f2b7 4256 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4257 {
4258 unsigned int val, type;
4259 bfd_vma roff;
4260
4261 /* GD->IE transition. */
13ae64f3 4262 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4263 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4264 if (type == 0x04)
4265 {
4266 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4267 Change it into:
4268 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4269 val >>= 3;
142411ca 4270 roff = rel->r_offset - 3;
13ae64f3
JJ		 4271 }
4272 else
4273 {
4274 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4275 Change it into:
4276 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4277 roff = rel->r_offset - 2;
4278 }
4279 memcpy (contents + roff,
4280 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4281 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4282 /* If foo is used only with foo@gotntpoff(%reg) and
4283 foo@indntpoff, but not with foo@gottpoff(%reg), change
4284 subl $foo@gottpoff(%reg), %eax
4285 into:
4286 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4287 if (tls_type == GOT_TLS_IE_POS)
4288 contents[roff + 6] = 0x03;
8c37241b 4289 bfd_put_32 (output_bfd,
6de2ae4a
L		 4290 htab->elf.sgot->output_section->vma
4291 + htab->elf.sgot->output_offset + off
4292 - htab->elf.sgotplt->output_section->vma
4293 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4294 contents + roff + 8);
4295 /* Skip R_386_PLT32. */
4296 rel++;
4297 continue;
4298 }
67a4f2b7
AO		 4299 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4300 {
4301 /* GDesc -> IE transition.
4302 It's originally something like:
4303 leal x@tlsdesc(%ebx), %eax
4304
4305 Change it to:
142411ca 4306 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4307 or:
4308 movl x@gottpoff(%ebx), %eax # before negl %eax
4309
4310 Registers other than %eax may be set up here. */
4311
67a4f2b7
AO		 4312 bfd_vma roff;
4313
4314 /* First, make sure it's a leal adding ebx to a 32-bit
4315 offset into any register, although it's probably
4316 almost always going to be eax. */
4317 roff = rel->r_offset;
67a4f2b7
AO		 4318
4319 /* Now modify the instruction as appropriate. */
4320 /* To turn a leal into a movl in the form we use it, it
4321 suffices to change the first byte from 0x8d to 0x8b.
4322 aoliva FIXME: should we decide to keep the leal, all
4323 we have to do is remove the statement below, and
4324 adjust the relaxation of R_386_TLS_DESC_CALL. */
4325 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4326
4327 if (tls_type == GOT_TLS_IE_BOTH)
4328 off += 4;
4329
4330 bfd_put_32 (output_bfd,
6de2ae4a
L		 4331 htab->elf.sgot->output_section->vma
4332 + htab->elf.sgot->output_offset + off
4333 - htab->elf.sgotplt->output_section->vma
4334 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4335 contents + roff);
4336 continue;
4337 }
4338 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4339 {
4340 /* GDesc -> IE transition.
4341 It's originally:
4342 call *(%eax)
4343
4344 Change it to:
142411ca 4345 xchg %ax,%ax
67a4f2b7
AO		 4346 or
4347 negl %eax
4348 depending on how we transformed the TLS_GOTDESC above.
4349 */
4350
67a4f2b7
AO		 4351 bfd_vma roff;
4352
67a4f2b7 4353 roff = rel->r_offset;
67a4f2b7
AO		 4354
4355 /* Now modify the instruction as appropriate. */
4356 if (tls_type != GOT_TLS_IE_NEG)
4357 {
10efb593
L		 4358 /* xchg %ax,%ax */
4359 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4360 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4361 }
4362 else
4363 {
4364 /* negl %eax */
4365 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4366 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4367 }
4368
4369 continue;
4370 }
4371 else
4372 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4373 break;
4374
4375 case R_386_TLS_LDM:
142411ca
L		 4376 if (! elf_i386_tls_transition (info, input_bfd,
4377 input_section, contents,
4378 symtab_hdr, sym_hashes,
4379 &r_type, GOT_UNKNOWN, rel,
4c544807 4380 relend, h, r_symndx))
142411ca 4381 return FALSE;
13ae64f3 4382
142411ca
L		 4383 if (r_type != R_386_TLS_LDM)
4384 {
13ae64f3 4385 /* LD->LE transition:
13ae64f3
JJ		 4386 leal foo(%reg), %eax; call ___tls_get_addr.
4387 We change it into:
4388 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4389 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4390 memcpy (contents + rel->r_offset - 2,
4391 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4392 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4393 rel++;
4394 continue;
4395 }
4396
6de2ae4a 4397 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4398 abort ();
4399
4400 off = htab->tls_ldm_got.offset;
4401 if (off & 1)
4402 off &= ~1;
4403 else
4404 {
947216bf 4405 Elf_Internal_Rela outrel;
13ae64f3 4406
6de2ae4a 4407 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4408 abort ();
4409
6de2ae4a
L		 4410 outrel.r_offset = (htab->elf.sgot->output_section->vma
4411 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4412
4413 bfd_put_32 (output_bfd, 0,
6de2ae4a 4414 htab->elf.sgot->contents + off);
13ae64f3 4415 bfd_put_32 (output_bfd, 0,
6de2ae4a 4416 htab->elf.sgot->contents + off + 4);
13ae64f3 4417 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4418 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4419 htab->tls_ldm_got.offset |= 1;
4420 }
6de2ae4a
L		 4421 relocation = htab->elf.sgot->output_section->vma
4422 + htab->elf.sgot->output_offset + off
4423 - htab->elf.sgotplt->output_section->vma
4424 - htab->elf.sgotplt->output_offset;
b34976b6 4425 unresolved_reloc = FALSE;
13ae64f3
JJ		 4426 break;
4427
4428 case R_386_TLS_LDO_32:
959b0961 4429 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4430 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4431 else
4432 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4433 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4434 break;
4435
4436 case R_386_TLS_LE_32:
13ae64f3 4437 case R_386_TLS_LE:
1d85728f 4438 if (!info->executable)
37e55690 4439 {
947216bf 4440 Elf_Internal_Rela outrel;
37e55690 4441 asection *sreloc;
37e55690
JJ		 4442
4443 outrel.r_offset = rel->r_offset
4444 + input_section->output_section->vma
4445 + input_section->output_offset;
4446 if (h != NULL && h->dynindx != -1)
4447 indx = h->dynindx;
4448 else
4449 indx = 0;
4450 if (r_type == R_386_TLS_LE_32)
4451 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4452 else
4453 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4454 sreloc = elf_section_data (input_section)->sreloc;
4455 if (sreloc == NULL)
4456 abort ();
59d6ffb2 4457 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4458 if (indx)
4459 continue;
4460 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4461 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4462 else
eb4ff4d6 4463 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4464 }
4465 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4466 relocation = elf_i386_tpoff (info, relocation);
37e55690 4467 else
eb4ff4d6 4468 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4469 break;
4470
252b5132
RH		 4471 default:
4472 break;
4473 }
4474
239e1f3a
AM		 4475 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4476 because such sections are not SEC_ALLOC and thus ld.so will
4477 not process them. */
8c694914 4478 if (unresolved_reloc
239e1f3a 4479 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4480 && h->def_dynamic)
4481 && _bfd_elf_section_offset (output_bfd, info, input_section,
4482 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4483 {
4484 (*_bfd_error_handler)
843fe662 4485 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4486 input_bfd,
4487 input_section,
6a30718d 4488 (long) rel->r_offset,
843fe662 4489 howto->name,
6a30718d 4490 h->root.root.string);
b34976b6 4491 return FALSE;
6a30718d 4492 }
83be169b 4493
cbe950e9 4494do_relocation:
252b5132
RH		 4495 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4496 contents, rel->r_offset,
55fd94b0 4497 relocation, 0);
252b5132 4498
62d78908 4499check_relocation_error:
cf5c0c5b 4500 if (r != bfd_reloc_ok)
252b5132 4501 {
cf5c0c5b 4502 const char *name;
ffb2e45b 4503
cf5c0c5b
AM		 4504 if (h != NULL)
4505 name = h->root.root.string;
4506 else
4507 {
4508 name = bfd_elf_string_from_elf_section (input_bfd,
4509 symtab_hdr->sh_link,
4510 sym->st_name);
4511 if (name == NULL)
b34976b6 4512 return FALSE;
cf5c0c5b
AM		 4513 if (*name == '\0')
4514 name = bfd_section_name (input_bfd, sec);
4515 }
ffb2e45b 4516
cf5c0c5b
AM		 4517 if (r == bfd_reloc_overflow)
4518 {
cf5c0c5b 4519 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4520 (info, (h ? &h->root : NULL), name, howto->name,
4521 (bfd_vma) 0, input_bfd, input_section,
4522 rel->r_offset)))
b34976b6 4523 return FALSE;
cf5c0c5b
AM		 4524 }
4525 else
4526 {
4527 (*_bfd_error_handler)
d003868e
AM		 4528 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4529 input_bfd, input_section,
cf5c0c5b 4530 (long) rel->r_offset, name, (int) r);
b34976b6 4531 return FALSE;
cf5c0c5b 4532 }
252b5132
RH		 4533 }
4534 }
4535
b34976b6 4536 return TRUE;
252b5132
RH		 4537}
4538
4539/* Finish up dynamic symbol handling. We set the contents of various
4540 dynamic sections here. */
4541
b34976b6 4542static bfd_boolean
55fd94b0
AM		 4543elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4544 struct bfd_link_info *info,
4545 struct elf_link_hash_entry *h,
4546 Elf_Internal_Sym *sym)
252b5132 4547{
6725bdbf 4548 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4549 unsigned plt_entry_size;
4550 const struct elf_i386_backend_data *abed;
dd7e64d4 4551 struct elf_i386_link_hash_entry *eh;
252b5132 4552
6725bdbf 4553 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4554 if (htab == NULL)
4555 return FALSE;
252b5132 4556
25e762b9
RM		 4557 abed = get_elf_i386_backend_data (output_bfd);
4558 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4559
dd7e64d4
L		 4560 eh = (struct elf_i386_link_hash_entry *) h;
4561
252b5132
RH		 4562 if (h->plt.offset != (bfd_vma) -1)
4563 {
252b5132
RH		 4564 bfd_vma plt_index;
4565 bfd_vma got_offset;
947216bf
AM		 4566 Elf_Internal_Rela rel;
4567 bfd_byte *loc;
cbe950e9
L		 4568 asection *plt, *gotplt, *relplt;
4569
4570 /* When building a static executable, use .iplt, .igot.plt and
4571 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4572 if (htab->elf.splt != NULL)
cbe950e9 4573 {
6de2ae4a
L		 4574 plt = htab->elf.splt;
4575 gotplt = htab->elf.sgotplt;
4576 relplt = htab->elf.srelplt;
cbe950e9
L		 4577 }
4578 else
4579 {
6de2ae4a
L		 4580 plt = htab->elf.iplt;
4581 gotplt = htab->elf.igotplt;
4582 relplt = htab->elf.irelplt;
cbe950e9 4583 }
252b5132
RH		 4584
4585 /* This symbol has an entry in the procedure linkage table. Set
4586 it up. */
4587
cbe950e9
L		 4588 if ((h->dynindx == -1
4589 && !((h->forced_local || info->executable)
4590 && h->def_regular
4591 && h->type == STT_GNU_IFUNC))
4592 || plt == NULL
4593 || gotplt == NULL
4594 || relplt == NULL)
cec7f46a 4595 abort ();
252b5132
RH		 4596
4597 /* Get the index in the procedure linkage table which
4598 corresponds to this symbol. This is the index of this symbol
4599 in all the symbols for which we are making plt entries. The
cbe950e9 4600 first entry in the procedure linkage table is reserved.
252b5132 4601
cbe950e9 4602 Get the offset into the .got table of the entry that
252b5132 4603 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4604 The first three are reserved.
6bbec505 4605
cbe950e9
L		 4606 For static executables, we don't reserve anything. */
4607
6de2ae4a 4608 if (plt == htab->elf.splt)
cbe950e9 4609 {
e1f98742
L		 4610 got_offset = h->plt.offset / plt_entry_size - 1;
4611 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4612 }
4613 else
4614 {
e1f98742
L		 4615 got_offset = h->plt.offset / plt_entry_size;
4616 got_offset = got_offset * 4;
cbe950e9 4617 }
252b5132
RH		 4618
4619 /* Fill in the entry in the procedure linkage table. */
4620 if (! info->shared)
4621 {
25e762b9
RM		 4622 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4623 abed->plt->plt_entry_size);
252b5132 4624 bfd_put_32 (output_bfd,
cbe950e9
L		 4625 (gotplt->output_section->vma
4626 + gotplt->output_offset
252b5132 4627 + got_offset),
25e762b9
RM		 4628 plt->contents + h->plt.offset
4629 + abed->plt->plt_got_offset);
eac338cf 4630
25e762b9 4631 if (abed->is_vxworks)
eac338cf
PB		 4632 {
4633 int s, k, reloc_index;
4634
4635 /* Create the R_386_32 relocation referencing the GOT
4636 for this PLT entry. */
4637
4638 /* S: Current slot number (zero-based). */
25e762b9
RM		 4639 s = ((h->plt.offset - abed->plt->plt_entry_size)
4640 / abed->plt->plt_entry_size);
eac338cf
PB		 4641 /* K: Number of relocations for PLTResolve. */
4642 if (info->shared)
4643 k = PLTRESOLVE_RELOCS_SHLIB;
4644 else
4645 k = PLTRESOLVE_RELOCS;
4646 /* Skip the PLTresolve relocations, and the relocations for
4647 the other PLT slots. */
4648 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4649 loc = (htab->srelplt2->contents + reloc_index
4650 * sizeof (Elf32_External_Rel));
4651
6de2ae4a
L		 4652 rel.r_offset = (htab->elf.splt->output_section->vma
4653 + htab->elf.splt->output_offset
eac338cf 4654 + h->plt.offset + 2),
7325306f 4655 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4656 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4657
4658 /* Create the R_386_32 relocation referencing the beginning of
4659 the PLT for this GOT entry. */
6de2ae4a
L		 4660 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4661 + htab->elf.sgotplt->output_offset
eac338cf 4662 + got_offset);
7325306f 4663 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4664 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4665 loc + sizeof (Elf32_External_Rel));
eac338cf 4666 }
252b5132
RH		 4667 }
4668 else
4669 {
25e762b9
RM		 4670 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4671 abed->plt->plt_entry_size);
252b5132 4672 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4673 plt->contents + h->plt.offset
4674 + abed->plt->plt_got_offset);
252b5132
RH		 4675 }
4676
252b5132
RH		 4677 /* Fill in the entry in the global offset table. */
4678 bfd_put_32 (output_bfd,
cbe950e9
L		 4679 (plt->output_section->vma
4680 + plt->output_offset
252b5132 4681 + h->plt.offset
25e762b9 4682 + abed->plt->plt_lazy_offset),
cbe950e9 4683 gotplt->contents + got_offset);
252b5132
RH		 4684
4685 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4686 rel.r_offset = (gotplt->output_section->vma
4687 + gotplt->output_offset
252b5132 4688 + got_offset);
cbe950e9
L		 4689 if (h->dynindx == -1
4690 || ((info->executable
4691 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4692 && h->def_regular
4693 && h->type == STT_GNU_IFUNC))
4694 {
4695 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4696 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4697 in the .got.plt section. */
4698 bfd_put_32 (output_bfd,
23209a78 4699 (h->root.u.def.value
cbe950e9
L		 4700 + h->root.u.def.section->output_section->vma
4701 + h->root.u.def.section->output_offset),
4702 gotplt->contents + got_offset);
4703 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4704 /* R_386_IRELATIVE comes last. */
4705 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4706 }
4707 else
e1f98742
L		 4708 {
4709 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4710 plt_index = htab->next_jump_slot_index++;
4711 }
cbe950e9 4712 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4713 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4714
e1f98742
L		 4715 /* Don't fill PLT entry for static executables. */
4716 if (plt == htab->elf.splt)
4717 {
4718 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4719 plt->contents + h->plt.offset
4720 + abed->plt->plt_reloc_offset);
4721 bfd_put_32 (output_bfd, - (h->plt.offset
4722 + abed->plt->plt_plt_offset + 4),
4723 plt->contents + h->plt.offset
4724 + abed->plt->plt_plt_offset);
4725 }
dd7e64d4
L		 4726 }
4727 else if (eh->plt_got.offset != (bfd_vma) -1)
4728 {
4729 bfd_vma got_offset, plt_offset;
4730 asection *plt, *got, *gotplt;
4731 const bfd_byte *got_plt_entry;
4732
4733 /* Offset of displacement of the indirect jump. */
4734 bfd_vma plt_got_offset = 2;
e1f98742 4735
dd7e64d4
L		 4736 /* Set the entry in the GOT procedure linkage table. */
4737 plt = htab->plt_got;
4738 got = htab->elf.sgot;
4739 gotplt = htab->elf.sgotplt;
4740 got_offset = h->got.offset;
4741
4742 if (got_offset == (bfd_vma) -1
4743 || plt == NULL
4744 || got == NULL
4745 || gotplt == NULL)
4746 abort ();
4747
4748 /* Fill in the entry in the GOT procedure linkage table. */
4749 if (! info->shared)
252b5132 4750 {
dd7e64d4
L		 4751 got_plt_entry = elf_i386_got_plt_entry;
4752 got_offset += got->output_section->vma + got->output_offset;
252b5132 4753 }
dd7e64d4
L		 4754 else
4755 {
4756 got_plt_entry = elf_i386_pic_got_plt_entry;
4757 got_offset += (got->output_section->vma
4758 + got->output_offset
4759 - gotplt->output_section->vma
4760 - gotplt->output_offset);
4761 }
4762
4763 plt_offset = eh->plt_got.offset;
4764 memcpy (plt->contents + plt_offset, got_plt_entry,
4765 sizeof (elf_i386_got_plt_entry));
4766 bfd_put_32 (output_bfd, got_offset,
4767 plt->contents + plt_offset + plt_got_offset);
4768 }
4769
4770 if (!h->def_regular
4771 && (h->plt.offset != (bfd_vma) -1
4772 || eh->plt_got.offset != (bfd_vma) -1))
4773 {
4774 /* Mark the symbol as undefined, rather than as defined in
4775 the .plt section. Leave the value if there were any
4776 relocations where pointer equality matters (this is a clue
4777 for the dynamic linker, to make function pointer
4778 comparisons work between an application and shared
4779 library), otherwise set it to zero. If a function is only
4780 called from a binary, there is no need to slow down
4781 shared libraries because of that. */
4782 sym->st_shndx = SHN_UNDEF;
4783 if (!h->pointer_equality_needed)
4784 sym->st_value = 0;
252b5132
RH		 4785 }
4786
13ae64f3 4787 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4788 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4789 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4790 {
947216bf 4791 Elf_Internal_Rela rel;
252b5132
RH		 4792
4793 /* This symbol has an entry in the global offset table. Set it
4794 up. */
4795
6de2ae4a 4796 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4797 abort ();
252b5132 4798
6de2ae4a
L		 4799 rel.r_offset = (htab->elf.sgot->output_section->vma
4800 + htab->elf.sgot->output_offset
dc810e39 4801 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4802
dd5724d5
AM		 4803 /* If this is a static link, or it is a -Bsymbolic link and the
4804 symbol is defined locally or was forced to be local because
4805 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4806 The entry in the global offset table will already have been
4807 initialized in the relocate_section function. */
710ab287 4808 if (h->def_regular
0018b0a3
L		 4809 && h->type == STT_GNU_IFUNC)
4810 {
710ab287
L		 4811 if (info->shared)
4812 {
4813 /* Generate R_386_GLOB_DAT. */
4814 goto do_glob_dat;
4815 }
4816 else
4817 {
cd2b2c10
L		 4818 asection *plt;
4819
710ab287
L		 4820 if (!h->pointer_equality_needed)
4821 abort ();
4822
4823 /* For non-shared object, we can't use .got.plt, which
4824 contains the real function addres if we need pointer
4825 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4826 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4827 bfd_put_32 (output_bfd,
4828 (plt->output_section->vma
4829 + plt->output_offset + h->plt.offset),
6de2ae4a 4830 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4831 return TRUE;
4832 }
0018b0a3
L		 4833 }
4834 else if (info->shared
4835 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4836 {
6725bdbf 4837 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4838 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4839 }
252b5132
RH		 4840 else
4841 {
dd5724d5 4842 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4843do_glob_dat:
6725bdbf 4844 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4845 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4846 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4847 }
4848
59d6ffb2 4849 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4850 }
4851
f5385ebf 4852 if (h->needs_copy)
252b5132 4853 {
947216bf 4854 Elf_Internal_Rela rel;
252b5132
RH		 4855
4856 /* This symbol needs a copy reloc. Set it up. */
4857
ffb2e45b
AM		 4858 if (h->dynindx == -1
4859 || (h->root.type != bfd_link_hash_defined
4860 && h->root.type != bfd_link_hash_defweak)
4861 || htab->srelbss == NULL)
4862 abort ();
252b5132
RH		 4863
4864 rel.r_offset = (h->root.u.def.value
4865 + h->root.u.def.section->output_section->vma
4866 + h->root.u.def.section->output_offset);
4867 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4868 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4869 }
4870
b34976b6 4871 return TRUE;
252b5132
RH		 4872}
4873
c25bc9fc
L		 4874/* Finish up local dynamic symbol handling. We set the contents of
4875 various dynamic sections here. */
4876
4877static bfd_boolean
4878elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4879{
4880 struct elf_link_hash_entry *h
4881 = (struct elf_link_hash_entry *) *slot;
4882 struct bfd_link_info *info
23209a78 4883 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4884
4885 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4886 h, NULL);
4887}
4888
38701953
AM		 4889/* Used to decide how to sort relocs in an optimal manner for the
4890 dynamic linker, before writing them out. */
4891
4892static enum elf_reloc_type_class
7e612e98
AM		 4893elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4894 const asection *rel_sec ATTRIBUTE_UNUSED,
4895 const Elf_Internal_Rela *rela)
38701953 4896{
55fd94b0 4897 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4898 {
4899 case R_386_RELATIVE:
4900 return reloc_class_relative;
4901 case R_386_JUMP_SLOT:
4902 return reloc_class_plt;
4903 case R_386_COPY:
4904 return reloc_class_copy;
4905 default:
4906 return reloc_class_normal;
4907 }
4908}
4909
252b5132
RH		 4910/* Finish up the dynamic sections. */
4911
b34976b6 4912static bfd_boolean
55fd94b0
AM		 4913elf_i386_finish_dynamic_sections (bfd *output_bfd,
4914 struct bfd_link_info *info)
252b5132 4915{
6725bdbf 4916 struct elf_i386_link_hash_table *htab;
252b5132 4917 bfd *dynobj;
252b5132 4918 asection *sdyn;
25e762b9 4919 const struct elf_i386_backend_data *abed;
252b5132 4920
6725bdbf 4921 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4922 if (htab == NULL)
4923 return FALSE;
4924
ebe50bae 4925 dynobj = htab->elf.dynobj;
3d4d4302 4926 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4927 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4928
ebe50bae 4929 if (htab->elf.dynamic_sections_created)
252b5132 4930 {
252b5132
RH		 4931 Elf32_External_Dyn *dyncon, *dynconend;
4932
6de2ae4a 4933 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4934 abort ();
252b5132
RH		 4935
4936 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4937 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4938 for (; dyncon < dynconend; dyncon++)
4939 {
4940 Elf_Internal_Dyn dyn;
51b64d56 4941 asection *s;
252b5132
RH		 4942
4943 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4944
4945 switch (dyn.d_tag)
4946 {
4947 default:
25e762b9
RM		 4948 if (abed->is_vxworks
4949 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4950 break;
0ac8d2ca 4951 continue;
252b5132
RH		 4952
4953 case DT_PLTGOT:
6de2ae4a 4954 s = htab->elf.sgotplt;
8c37241b 4955 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4956 break;
4957
252b5132 4958 case DT_JMPREL:
6de2ae4a 4959 s = htab->elf.srelplt;
6348e046 4960 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4961 break;
4962
4963 case DT_PLTRELSZ:
6de2ae4a 4964 s = htab->elf.srelplt;
eea6121a 4965 dyn.d_un.d_val = s->size;
252b5132
RH		 4966 break;
4967
4968 case DT_RELSZ:
4969 /* My reading of the SVR4 ABI indicates that the
4970 procedure linkage table relocs (DT_JMPREL) should be
4971 included in the overall relocs (DT_REL). This is
4972 what Solaris does. However, UnixWare can not handle
4973 that case. Therefore, we override the DT_RELSZ entry
6348e046 4974 here to make it not include the JMPREL relocs. */
6de2ae4a 4975 s = htab->elf.srelplt;
6348e046
AM		 4976 if (s == NULL)
4977 continue;
eea6121a 4978 dyn.d_un.d_val -= s->size;
6348e046
AM		 4979 break;
4980
4981 case DT_REL:
4982 /* We may not be using the standard ELF linker script.
4983 If .rel.plt is the first .rel section, we adjust
4984 DT_REL to not include it. */
6de2ae4a 4985 s = htab->elf.srelplt;
6348e046
AM		 4986 if (s == NULL)
4987 continue;
4988 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4989 continue;
eea6121a 4990 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4991 break;
4992 }
0ac8d2ca
AM		 4993
4994 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4995 }
4996
4997 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4998 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4999 {
5000 if (info->shared)
eac338cf 5001 {
25e762b9
RM		 5002 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5003 abed->plt->plt0_entry_size);
5004 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5005 abed->plt0_pad_byte,
5006 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5007 }
252b5132
RH		 5008 else
5009 {
25e762b9
RM		 5010 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5011 abed->plt->plt0_entry_size);
5012 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5013 abed->plt0_pad_byte,
5014 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5015 bfd_put_32 (output_bfd,
6de2ae4a
L		 5016 (htab->elf.sgotplt->output_section->vma
5017 + htab->elf.sgotplt->output_offset
6725bdbf 5018 + 4),
25e762b9
RM		 5019 htab->elf.splt->contents
5020 + abed->plt->plt0_got1_offset);
252b5132 5021 bfd_put_32 (output_bfd,
6de2ae4a
L		 5022 (htab->elf.sgotplt->output_section->vma
5023 + htab->elf.sgotplt->output_offset
6725bdbf 5024 + 8),
25e762b9
RM		 5025 htab->elf.splt->contents
5026 + abed->plt->plt0_got2_offset);
eac338cf 5027
25e762b9 5028 if (abed->is_vxworks)
eac338cf
PB		 5029 {
5030 Elf_Internal_Rela rel;
7325306f 5031
eac338cf
PB		 5032 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5033 On IA32 we use REL relocations so the addend goes in
5034 the PLT directly. */
6de2ae4a
L		 5035 rel.r_offset = (htab->elf.splt->output_section->vma
5036 + htab->elf.splt->output_offset
25e762b9 5037 + abed->plt->plt0_got1_offset);
7325306f 5038 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5039 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5040 htab->srelplt2->contents);
5041 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5042 rel.r_offset = (htab->elf.splt->output_section->vma
5043 + htab->elf.splt->output_offset
25e762b9 5044 + abed->plt->plt0_got2_offset);
7325306f 5045 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5046 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5047 htab->srelplt2->contents +
5048 sizeof (Elf32_External_Rel));
5049 }
252b5132
RH		 5050 }
5051
5052 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5053 really seem like the right value. */
6de2ae4a 5054 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5055 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5056
5057 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 5058 if (abed->is_vxworks && !info->shared)
eac338cf 5059 {
25e762b9
RM		 5060 int num_plts = (htab->elf.splt->size
5061 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5062 unsigned char *p;
eac338cf
PB		 5063
5064 p = htab->srelplt2->contents;
5065 if (info->shared)
5066 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5067 else
5068 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5069
5070 for (; num_plts; num_plts--)
5071 {
5072 Elf_Internal_Rela rel;
5073 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5074 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5075 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5076 p += sizeof (Elf32_External_Rel);
5077
5078 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5079 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5080 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5081 p += sizeof (Elf32_External_Rel);
5082 }
5083 }
252b5132
RH		 5084 }
5085 }
5086
6de2ae4a 5087 if (htab->elf.sgotplt)
252b5132 5088 {
56d4289c
L		 5089 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5090 {
5091 (*_bfd_error_handler)
5092 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5093 return FALSE;
5094 }
5095
12d0ee4a 5096 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5097 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5098 {
5099 bfd_put_32 (output_bfd,
55fd94b0 5100 (sdyn == NULL ? 0
12d0ee4a 5101 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5102 htab->elf.sgotplt->contents);
5103 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5104 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5105 }
252b5132 5106
6de2ae4a 5107 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5108 }
8c37241b 5109
e41b3a13 5110 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5111 if (htab->plt_eh_frame != NULL
5112 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5113 {
5114 if (htab->elf.splt != NULL
5115 && htab->elf.splt->size != 0
5116 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5117 && htab->elf.splt->output_section != NULL
5118 && htab->plt_eh_frame->output_section != NULL)
5119 {
5120 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5121 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5122 + htab->plt_eh_frame->output_offset
5123 + PLT_FDE_START_OFFSET;
5124 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5125 htab->plt_eh_frame->contents
5126 + PLT_FDE_START_OFFSET);
5127 }
5128 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5129 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5130 {
5131 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5132 htab->plt_eh_frame,
5133 htab->plt_eh_frame->contents))
5134 return FALSE;
5135 }
5136 }
5137
6de2ae4a
L		 5138 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5139 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5140
c25bc9fc
L		 5141 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5142 htab_traverse (htab->loc_hash_table,
5143 elf_i386_finish_local_dynamic_symbol,
5144 info);
5145
b34976b6 5146 return TRUE;
252b5132
RH		 5147}
5148
144bed8d
L		 5149/* Return address in section PLT for the Ith GOTPLT relocation, for
5150 relocation REL or (bfd_vma) -1 if it should not be included. */
4c45e5c9
JJ		 5151
5152static bfd_vma
144bed8d 5153elf_i386_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4c45e5c9 5154{
144bed8d
L		 5155 bfd *abfd;
5156 const struct elf_i386_backend_data *bed;
5157 bfd_vma plt_offset;
5158
5159 /* Only match R_386_JUMP_SLOT and R_386_IRELATIVE. */
5160 if (rel->howto->type != R_386_JUMP_SLOT
5161 && rel->howto->type != R_386_IRELATIVE)
5162 return (bfd_vma) -1;
5163
5164 abfd = plt->owner;
5165 bed = get_elf_i386_backend_data (abfd);
5166 plt_offset = bed->plt->plt_entry_size;
cca5b8b6
L		 5167
5168 if (elf_elfheader (abfd)->e_ident[EI_OSABI] != ELFOSABI_GNU)
5169 return plt->vma + (i + 1) * plt_offset;
5170
144bed8d
L		 5171 while (plt_offset < plt->size)
5172 {
5173 bfd_vma reloc_offset;
5174 bfd_byte reloc_offset_raw[4];
5175
5176 if (!bfd_get_section_contents (abfd, (asection *) plt,
5177 reloc_offset_raw,
5178 plt_offset + bed->plt->plt_reloc_offset,
5179 sizeof (reloc_offset_raw)))
5180 return (bfd_vma) -1;
5181
5182 reloc_offset = H_GET_32 (abfd, reloc_offset_raw);
5183 if (reloc_offset == i * sizeof (Elf32_External_Rel))
5184 return plt->vma + plt_offset;
5185 plt_offset += bed->plt->plt_entry_size;
5186 }
5187
5188 abort ();
4c45e5c9
JJ		 5189}
5190
fdc90cb4
JJ		 5191/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5192
5193static bfd_boolean
5194elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5195{
5196 if (h->plt.offset != (bfd_vma) -1
5197 && !h->def_regular
5198 && !h->pointer_equality_needed)
5199 return FALSE;
5200
5201 return _bfd_elf_hash_symbol (h);
5202}
4c45e5c9 5203
d8045f23
NC		 5204/* Hook called by the linker routine which adds symbols from an object
5205 file. */
5206
5207static bfd_boolean
c16153ae 5208elf_i386_add_symbol_hook (bfd * abfd,
f1885d1e 5209 struct bfd_link_info * info,
d8045f23
NC		 5210 Elf_Internal_Sym * sym,
5211 const char ** namep ATTRIBUTE_UNUSED,
5212 flagword * flagsp ATTRIBUTE_UNUSED,
5213 asection ** secp ATTRIBUTE_UNUSED,
5214 bfd_vma * valp ATTRIBUTE_UNUSED)
5215{
f1885d1e
AM		 5216 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5217 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
5218 && (abfd->flags & DYNAMIC) == 0
5219 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
f64b2e8d 5220 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5221
5222 return TRUE;
5223}
5224
6d00b590 5225#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5226#define TARGET_LITTLE_NAME "elf32-i386"
5227#define ELF_ARCH bfd_arch_i386
ae95ffa6 5228#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5229#define ELF_MACHINE_CODE EM_386
5230#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5231
5232#define elf_backend_can_gc_sections 1
51b64d56 5233#define elf_backend_can_refcount 1
252b5132
RH		 5234#define elf_backend_want_got_plt 1
5235#define elf_backend_plt_readonly 1
5236#define elf_backend_want_plt_sym 0
5237#define elf_backend_got_header_size 12
e41b3a13 5238#define elf_backend_plt_alignment 4
252b5132 5239
8c29f035
AM		 5240/* Support RELA for objdump of prelink objects. */
5241#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5242#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5243
13ae64f3 5244#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5245
dd5724d5
AM		 5246#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5247#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5248#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5249#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 5250
5251#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5252#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5253#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5254#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5255#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5256#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5257#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5258#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5259#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5260#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5261#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5262#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5263#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5264#define elf_backend_relocate_section elf_i386_relocate_section
5265#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5266#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5267#define elf_backend_omit_section_dynsym \
5268 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5269#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5270#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5271#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5272
252b5132 5273#include "elf32-target.h"
2bc3c89a
AM		 5274
5275/* FreeBSD support. */
5276
5277#undef TARGET_LITTLE_SYM
6d00b590 5278#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5279#undef TARGET_LITTLE_NAME
5280#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5281#undef ELF_OSABI
5282#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5283
5284/* The kernel recognizes executables as valid only if they carry a
5285 "FreeBSD" label in the ELF header. So we put this label on all
5286 executables and (for simplicity) also all other object files. */
5287
2bc3c89a 5288static void
d8045f23 5289elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5290{
78245035 5291 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5292
2bc3c89a 5293#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5294 {
5295 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5296 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5297 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5298 }
caf47ea6 5299#endif
2bc3c89a
AM		 5300}
5301
5302#undef elf_backend_post_process_headers
d8045f23 5303#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5304#undef elf32_bed
5305#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5306
d8045f23
NC		 5307#undef elf_backend_add_symbol_hook
5308
2bc3c89a 5309#include "elf32-target.h"
eac338cf 5310
a6cc6b3b
RO		 5311/* Solaris 2. */
5312
5313#undef TARGET_LITTLE_SYM
6d00b590 5314#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5315#undef TARGET_LITTLE_NAME
5316#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5317
5318/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5319 objects won't be recognized. */
5320#undef ELF_OSABI
5321
5322#undef elf32_bed
5323#define elf32_bed elf32_i386_sol2_bed
5324
7dc98aea
RO		 5325/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5326 boundary. */
5327#undef elf_backend_static_tls_alignment
5328#define elf_backend_static_tls_alignment 8
5329
a6cc6b3b
RO		 5330/* The Solaris 2 ABI requires a plt symbol on all platforms.
5331
5332 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5333 File, p.63. */
5334#undef elf_backend_want_plt_sym
5335#define elf_backend_want_plt_sym 1
5336
5337#include "elf32-target.h"
5338
a27e4371
RM		 5339/* Native Client support. */
5340
5341#undef TARGET_LITTLE_SYM
6d00b590 5342#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 5343#undef TARGET_LITTLE_NAME
5344#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5345#undef elf32_bed
5346#define elf32_bed elf32_i386_nacl_bed
5347
5348#undef ELF_MAXPAGESIZE
5349#define ELF_MAXPAGESIZE 0x10000
5350
5351/* Restore defaults. */
5352#undef ELF_OSABI
5353#undef elf_backend_want_plt_sym
5354#define elf_backend_want_plt_sym 0
5355#undef elf_backend_post_process_headers
a27e4371
RM		 5356#undef elf_backend_static_tls_alignment
5357
5358/* NaCl uses substantially different PLT entries for the same effects. */
5359
5360#undef elf_backend_plt_alignment
5361#define elf_backend_plt_alignment 5
5362#define NACL_PLT_ENTRY_SIZE 64
5363#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5364
5365static const bfd_byte elf_i386_nacl_plt0_entry[] =
5366 {
5367 0xff, 0x35, /* pushl contents of address */
5368 0, 0, 0, 0, /* replaced with address of .got + 4. */
5369 0x8b, 0x0d, /* movl contents of address, %ecx */
5370 0, 0, 0, 0, /* replaced with address of .got + 8. */
5371 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5372 0xff, 0xe1 /* jmp *%ecx */
5373 };
5374
5375static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5376 {
5377 0x8b, 0x0d, /* movl contents of address, %ecx */
5378 0, 0, 0, 0, /* replaced with GOT slot address. */
5379 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5380 0xff, 0xe1, /* jmp *%ecx */
5381
5382 /* Pad to the next 32-byte boundary with nop instructions. */
5383 0x90,
5384 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5385 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5386
5387 /* Lazy GOT entries point here (32-byte aligned). */
5388 0x68, /* pushl immediate */
5389 0, 0, 0, 0, /* replaced with reloc offset. */
5390 0xe9, /* jmp relative */
5391 0, 0, 0, 0, /* replaced with offset to .plt. */
5392
5393 /* Pad to the next 32-byte boundary with nop instructions. */
5394 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5395 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5396 0x90, 0x90
5397 };
5398
5399static const bfd_byte
5400elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5401 {
5402 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5403 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5404 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5405 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5406
5407 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5408 so pad to that size with nop instructions. */
5409 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5410 };
5411
5412static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5413 {
5414 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5415 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5416 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5417 0xff, 0xe1, /* jmp *%ecx */
5418
5419 /* Pad to the next 32-byte boundary with nop instructions. */
5420 0x90,
5421 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5422 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5423
5424 /* Lazy GOT entries point here (32-byte aligned). */
5425 0x68, /* pushl immediate */
5426 0, 0, 0, 0, /* replaced with offset into relocation table. */
5427 0xe9, /* jmp relative */
5428 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5429
5430 /* Pad to the next 32-byte boundary with nop instructions. */
5431 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5432 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5433 0x90, 0x90
5434 };
5435
5436static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5437 {
5438#if (PLT_CIE_LENGTH != 20 \
5439 || PLT_FDE_LENGTH != 36 \
5440 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5441 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5442# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5443#endif
5444 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5445 0, 0, 0, 0, /* CIE ID */
5446 1, /* CIE version */
5447 'z', 'R', 0, /* Augmentation string */
5448 1, /* Code alignment factor */
5449 0x7c, /* Data alignment factor: -4 */
5450 8, /* Return address column */
5451 1, /* Augmentation size */
5452 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5453 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5454 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5455 DW_CFA_nop, DW_CFA_nop,
5456
5457 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5458 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5459 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5460 0, 0, 0, 0, /* .plt size goes here */
5461 0, /* Augmentation size */
5462 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5463 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5464 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5465 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5466 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5467 13, /* Block length */
5468 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5469 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5470 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5471 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5472 DW_CFA_nop, DW_CFA_nop
5473 };
5474
5475static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5476 {
5477 elf_i386_nacl_plt0_entry, /* plt0_entry */
5478 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5479 2, /* plt0_got1_offset */
5480 8, /* plt0_got2_offset */
5481 elf_i386_nacl_plt_entry, /* plt_entry */
5482 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5483 2, /* plt_got_offset */
5484 33, /* plt_reloc_offset */
5485 38, /* plt_plt_offset */
5486 32, /* plt_lazy_offset */
5487 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5488 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5489 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5490 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5491 };
5492
5493static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5494 {
5495 &elf_i386_nacl_plt, /* plt */
5496 0x90, /* plt0_pad_byte: nop insn */
5497 0, /* is_vxworks */
5498 };
5499
64b384e1
RM		 5500static bfd_boolean
5501elf32_i386_nacl_elf_object_p (bfd *abfd)
5502{
5503 /* Set the right machine number for a NaCl i386 ELF32 file. */
5504 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
5505 return TRUE;
5506}
5507
a27e4371
RM		 5508#undef elf_backend_arch_data
5509#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5510
64b384e1
RM		 5511#undef elf_backend_object_p
5512#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 5513#undef elf_backend_modify_segment_map
5514#define elf_backend_modify_segment_map nacl_modify_segment_map
5515#undef elf_backend_modify_program_headers
5516#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5517#undef elf_backend_final_write_processing
5518#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5519
a27e4371
RM		 5520#include "elf32-target.h"
5521
5a68afcf 5522/* Restore defaults. */
64b384e1 5523#undef elf_backend_object_p
5a68afcf
RM		 5524#undef elf_backend_modify_segment_map
5525#undef elf_backend_modify_program_headers
887badb3 5526#undef elf_backend_final_write_processing
5a68afcf 5527
eac338cf
PB		 5528/* VxWorks support. */
5529
5530#undef TARGET_LITTLE_SYM
6d00b590 5531#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 5532#undef TARGET_LITTLE_NAME
5533#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5534#undef ELF_OSABI
a27e4371
RM		 5535#undef elf_backend_plt_alignment
5536#define elf_backend_plt_alignment 4
eac338cf 5537
23209a78
RM		 5538static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5539 {
25e762b9 5540 &elf_i386_plt, /* plt */
23209a78
RM		 5541 0x90, /* plt0_pad_byte */
5542 1, /* is_vxworks */
5543 };
eac338cf 5544
23209a78
RM		 5545#undef elf_backend_arch_data
5546#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5547
13285a1b 5548#undef elf_backend_relocs_compatible
eac338cf
PB		 5549#undef elf_backend_add_symbol_hook
5550#define elf_backend_add_symbol_hook \
5551 elf_vxworks_add_symbol_hook
5552#undef elf_backend_link_output_symbol_hook
5553#define elf_backend_link_output_symbol_hook \
9c72ff84 5554 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5555#undef elf_backend_emit_relocs
5556#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5557#undef elf_backend_final_write_processing
5558#define elf_backend_final_write_processing \
5559 elf_vxworks_final_write_processing
7dc98aea 5560#undef elf_backend_static_tls_alignment
eac338cf
PB		 5561
5562/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5563 define it. */
5564#undef elf_backend_want_plt_sym
5565#define elf_backend_want_plt_sym 1
5566
5567#undef elf32_bed
5568#define elf32_bed elf32_i386_vxworks_bed
5569
5570#include "elf32-target.h"
GDB Binutils - Deliverables
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